Mercurial > hg > xemacs-beta
annotate src/redisplay.c @ 5273:799742b751c8
Accept circular lists where that is useful in #'mapcar*, #'map* and friends.
src/ChangeLog addition:
2010-09-16 Aidan Kehoe <kehoea@parhasard.net>
* fns.c (Flist_length): New, moved here from cl-extra.el, needed
by the next function.
(shortest_length_among_sequences): New.
(Fmapconcat, FmapcarX, Fmapvector, Fmapcan, Fmapc, Fmap)
(Fmap_into, Fsome, Fevery):
Use shortest_length_among_sequences() when working out how many
iterations to do, only giving circular list errors if all
arguments are circular.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Thu, 16 Sep 2010 20:34:49 +0100 |
| parents | bc3ede8f29a8 |
| children | 39304a35b6b3 308d34e9f07d |
| rev | line source |
|---|---|
| 428 | 1 /* Display generation from window structure and buffer text. |
| 2 Copyright (C) 1994, 1995, 1996 Board of Trustees, University of Illinois. | |
| 3 Copyright (C) 1995 Free Software Foundation, Inc. | |
|
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parents:
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changeset
|
4 Copyright (C) 1995, 1996, 2000, 2001, 2002, 2003, 2005, 2010 Ben Wing. |
| 428 | 5 Copyright (C) 1995 Sun Microsystems, Inc. |
| 6 Copyright (C) 1996 Chuck Thompson. | |
| 7 | |
| 8 This file is part of XEmacs. | |
| 9 | |
| 10 XEmacs is free software; you can redistribute it and/or modify it | |
| 11 under the terms of the GNU General Public License as published by the | |
| 12 Free Software Foundation; either version 2, or (at your option) any | |
| 13 later version. | |
| 14 | |
| 15 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 16 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 18 for more details. | |
| 19 | |
| 20 You should have received a copy of the GNU General Public License | |
| 21 along with XEmacs; see the file COPYING. If not, write to | |
| 22 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 23 Boston, MA 02111-1307, USA. */ | |
| 24 | |
| 25 /* Synched up with: Not in FSF. */ | |
| 26 | |
| 27 /* Author: Chuck Thompson */ | |
| 28 | |
| 29 /* Fixed up by Ben Wing for Mule */ | |
| 30 | |
| 31 /* This file has been Mule-ized. */ | |
| 32 | |
| 33 /***************************************************************************** | |
| 34 The Golden Rules of Redisplay | |
| 35 | |
| 853 | 36 First: It Is Better To Be Correct Than Fast |
| 37 Second: Thou Shalt Use Due Caution When Running Elisp From Within Redisplay | |
| 38 Third: It Is Better To Be Fast Than Not To Be | |
| 428 | 39 ****************************************************************************/ |
| 40 | |
| 1318 | 41 /* Note: The second rule used to prohibit running Elisp from within |
| 42 redisplay, but that's not correct any more -- use | |
| 43 call*_trapping_problems() or call_with_suspended_errors() instead. | |
| 853 | 44 |
| 45 --ben | |
| 46 */ | |
| 47 | |
| 428 | 48 #include <config.h> |
| 49 #include "lisp.h" | |
| 50 | |
| 51 #include "buffer.h" | |
| 52 #include "commands.h" | |
| 53 #include "debug.h" | |
| 872 | 54 #include "device-impl.h" |
| 428 | 55 #include "elhash.h" |
| 853 | 56 #include "events.h" |
| 872 | 57 #include "extents-impl.h" |
| 428 | 58 #include "faces.h" |
| 872 | 59 #include "frame-impl.h" |
| 428 | 60 #include "glyphs.h" |
| 61 #include "gutter.h" | |
| 62 #include "insdel.h" | |
| 63 #include "menubar.h" | |
|
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|
64 #include "fontcolor-impl.h" |
| 1318 | 65 #include "opaque.h" |
| 428 | 66 #include "process.h" |
| 1292 | 67 #include "profile.h" |
| 428 | 68 #include "redisplay.h" |
| 69 #include "toolbar.h" | |
| 872 | 70 #include "window-impl.h" |
| 428 | 71 #include "line-number.h" |
| 72 #include "file-coding.h" | |
| 73 | |
| 442 | 74 #include "sysfile.h" |
| 75 | |
| 428 | 76 #ifdef HAVE_TTY |
| 77 #include "console-tty.h" | |
| 78 #endif /* HAVE_TTY */ | |
| 79 | |
| 80 /* Note: We have to be careful throughout this code to properly handle | |
| 867 | 81 and differentiate between Ibytes and Ichars. |
| 82 | |
| 83 Since strings are generally composed of Ibytes, I've taken the tack | |
| 84 that any contiguous set of Ibytes is called a "string", while | |
| 85 any contiguous set of Ichars is called an "array". */ | |
| 428 | 86 |
| 87 /* Return value to indicate a failure by an add_*_rune routine to add | |
| 88 a rune, but no propagation information needs to be returned. */ | |
| 89 #define ADD_FAILED (prop_block_dynarr *) 1 | |
| 90 | |
| 91 #define BEGIN_GLYPHS 0 | |
| 92 #define END_GLYPHS 1 | |
| 93 #define LEFT_GLYPHS 2 | |
| 94 #define RIGHT_GLYPHS 3 | |
| 95 | |
| 96 #define VERTICAL_CLIP(w, display) \ | |
| 442 | 97 ((WINDOW_TTY_P (w) | (!display && scroll_on_clipped_lines)) \ |
| 428 | 98 ? INT_MAX \ |
| 442 | 99 : vertical_clip) |
| 428 | 100 |
| 101 /* The following structures are completely private to redisplay.c so | |
| 102 we put them here instead of in a header file, for modularity. */ | |
| 103 | |
| 826 | 104 /* NOTE: Bytexpos's not Charxpos's in this structure. */ |
| 428 | 105 |
| 106 typedef struct position_redisplay_data_type | |
| 107 { | |
| 108 /* This information is normally filled in by the create_*_block | |
| 109 routines and is used by the add_*_rune routines. */ | |
| 110 Lisp_Object window; | |
| 111 /* if we are working with strings rather than buffers we need a | |
| 112 handle to the string */ | |
| 113 Lisp_Object string; | |
| 114 struct device *d; | |
| 115 struct display_block *db; | |
| 116 struct display_line *dl; | |
| 867 | 117 Ichar ch; /* Character that is to be added. This is |
| 428 | 118 used to communicate this information to |
| 867 | 119 add_ichar_rune(). */ |
| 428 | 120 Lisp_Object last_charset; /* The charset of the previous character. |
| 121 Used to optimize some lookups -- we | |
| 122 only have to do some things when | |
| 123 the charset changes. */ | |
| 124 face_index last_findex; /* The face index of the previous character. | |
| 125 Needed to ensure the validity of the | |
| 126 last_charset optimization. */ | |
| 127 | |
| 128 int last_char_width; /* The width of the previous character. */ | |
| 129 int font_is_bogus; /* If true, it means we couldn't instantiate | |
| 130 the font for this charset, so we substitute | |
| 131 ~'s from the ASCII charset. */ | |
| 826 | 132 Bytexpos byte_charpos; /* Position of character we are processing. This |
| 133 is a Bytexpos, meaning it refers to bytes (not | |
| 134 chars) and can refer to either buffers (1-based) | |
| 135 or strings (0-based). We need to be careful | |
| 136 when doing anything that references the text in | |
| 137 the buffer or string. */ | |
| 138 Bytexpos byte_endpos; /* ????? Unknown, under-used. */ | |
| 428 | 139 int pixpos; |
| 140 int max_pixpos; | |
| 141 int blank_width; /* Width of the blank that is to be added. | |
| 142 This is used to communicate this information | |
| 143 to add_blank_rune(). | |
| 144 | |
| 145 This is also used rather cheesily to | |
| 146 communicate the width of the eol-cursor-size | |
| 147 blank that exists at the end of the line. | |
| 867 | 148 add_ichar_rune() is called cheesily with |
| 428 | 149 the non-printing char '\n', which is stuck |
| 150 in the output routines with its width being | |
| 151 BLANK_WIDTH. */ | |
| 826 | 152 Bytexpos byte_cursor_charpos; /* This stores the buffer position of the |
| 153 cursor. */ | |
| 428 | 154 unsigned int cursor_type :3; |
| 155 int cursor_x; /* rune block cursor is at */ | |
| 156 int start_col; /* Number of character columns (each column has | |
| 157 a width of the default char width) that still | |
| 158 need to be skipped. This is used for horizontal | |
| 159 scrolling, where a certain number of columns | |
| 160 (those off the left side of the screen) need | |
| 161 to be skipped before anything is displayed. */ | |
| 826 | 162 Bytexpos byte_start_col_enabled; |
| 428 | 163 int start_col_xoffset; /* Number of pixels that still need to |
| 4187 | 164 be skipped. This is used for |
| 165 horizontal scrolling of glyphs, where we want | |
| 166 to be able to scroll over part of the glyph. */ | |
| 428 | 167 |
| 168 int hscroll_glyph_width_adjust; /* how much the width of the hscroll | |
| 169 glyph differs from space_width (w). | |
| 170 0 if no hscroll glyph was used, | |
| 171 i.e. the window is not scrolled | |
| 172 horizontally. Used in tab | |
| 173 calculations. */ | |
| 174 | |
| 175 /* Information about the face the text should be displayed in and | |
| 176 any begin-glyphs and end-glyphs. */ | |
| 177 struct extent_fragment *ef; | |
| 178 face_index findex; | |
| 179 | |
| 819 | 180 /* The height of a pixmap may either be predetermined if the user has set a |
| 181 baseline value, or it may be dependent on whatever the line ascent and | |
| 182 descent values end up being, based just on font and pixmap-ascent | |
| 183 information. In the first case we can immediately update the values, thus | |
| 184 their inclusion here. In the last case we cannot determine the actual | |
| 185 contribution to the line height until we have finished laying out all text | |
| 186 on the line. Thus we propagate the max height of such pixmaps and do a | |
| 187 final calculation (in calculate_baseline()) after all text has been added | |
| 188 to the line. */ | |
| 428 | 189 int new_ascent; |
| 190 int new_descent; | |
| 191 int max_pixmap_height; | |
| 819 | 192 int need_baseline_computation; |
| 193 int end_glyph_width; /* Well, it is the kitchen sink after all ... */ | |
| 428 | 194 |
| 195 Lisp_Object result_str; /* String where we put the result of | |
| 196 generating a formatted string in the modeline. */ | |
| 197 int is_modeline; /* Non-zero if we're generating the modeline. */ | |
| 198 Charcount modeline_charpos; /* Number of chars used in result_str so far; | |
| 199 corresponds to bytepos. */ | |
| 200 Bytecount bytepos; /* Number of bytes used in result_str so far. | |
| 4187 | 201 We don't actually copy the bytes into result_str |
| 428 | 202 until the end because we don't know how big the |
| 203 string is going to be until then. */ | |
| 204 } pos_data; | |
| 205 | |
| 206 enum prop_type | |
| 207 { | |
| 208 PROP_STRING, | |
| 209 PROP_CHAR, | |
| 210 PROP_MINIBUF_PROMPT, | |
| 819 | 211 PROP_BLANK, |
| 212 PROP_GLYPH | |
| 428 | 213 }; |
| 214 | |
| 215 /* Data that should be propagated to the next line. Either a single | |
| 867 | 216 Ichar, a string of Ibyte's or a glyph. |
| 428 | 217 |
| 218 The actual data that is propagated ends up as a Dynarr of these | |
| 219 blocks. | |
| 220 | |
| 819 | 221 prop_blocks are used to indicate that data that was supposed to go |
| 222 on the previous line couldn't actually be displayed. Generally this | |
| 223 shouldn't happen if we are clipping the end of lines. If we are | |
| 224 wrapping then we need to display the propagation data before moving | |
| 225 on. Its questionable whether we should wrap or clip glyphs in this | |
| 226 instance. Most e-lisp relies on clipping so we preserve this | |
| 227 behavior. | |
| 228 | |
| 867 | 229 #### It's unclean that both Ichars and Ibytes are here. |
| 428 | 230 */ |
| 231 | |
| 232 typedef struct prop_block prop_block; | |
| 233 struct prop_block | |
| 234 { | |
| 235 enum prop_type type; | |
| 236 | |
| 237 union data | |
| 238 { | |
| 239 struct | |
| 240 { | |
| 867 | 241 Ibyte *str; |
| 428 | 242 Bytecount len; /* length of the string. */ |
| 243 } p_string; | |
| 244 | |
| 245 struct | |
| 246 { | |
| 867 | 247 Ichar ch; |
| 826 | 248 Bytebpos byte_cursor_charpos; /* NOTE: is in Bytebpos's */ |
| 428 | 249 unsigned int cursor_type :3; |
| 250 } p_char; | |
| 251 | |
| 252 struct | |
| 253 { | |
| 254 int width; | |
| 255 face_index findex; | |
| 256 } p_blank; | |
| 819 | 257 |
| 258 struct | |
| 259 { | |
| 260 /* Not used as yet, but could be used to wrap rather than clip glyphs. */ | |
| 4187 | 261 int width; |
| 819 | 262 Lisp_Object glyph; |
| 263 } p_glyph; | |
| 264 | |
| 428 | 265 } data; |
| 266 }; | |
| 267 | |
| 268 typedef struct | |
| 269 { | |
| 270 Dynarr_declare (prop_block); | |
| 271 } prop_block_dynarr; | |
| 272 | |
| 273 | |
| 274 static Charcount generate_fstring_runes (struct window *w, pos_data *data, | |
| 275 Charcount pos, Charcount min_pos, | |
| 276 Charcount max_pos, Lisp_Object elt, | |
| 277 int depth, int max_pixsize, | |
| 438 | 278 face_index findex, int type, |
| 279 Charcount *offset, | |
| 280 Lisp_Object cur_ext); | |
| 428 | 281 static prop_block_dynarr *add_glyph_rune (pos_data *data, |
| 282 struct glyph_block *gb, | |
| 283 int pos_type, int allow_cursor, | |
| 284 struct glyph_cachel *cachel); | |
| 665 | 285 static Bytebpos create_text_block (struct window *w, struct display_line *dl, |
| 826 | 286 Bytebpos byte_start_pos, |
| 287 prop_block_dynarr **prop, | |
| 288 int type); | |
| 428 | 289 static int create_overlay_glyph_block (struct window *w, |
| 290 struct display_line *dl); | |
| 291 static void create_left_glyph_block (struct window *w, | |
| 292 struct display_line *dl, | |
| 293 int overlay_width); | |
| 294 static void create_right_glyph_block (struct window *w, | |
| 295 struct display_line *dl); | |
| 296 static void redisplay_windows (Lisp_Object window, int skip_selected); | |
| 867 | 297 static void decode_mode_spec (struct window *w, Ichar spec, int type); |
| 428 | 298 static void free_display_line (struct display_line *dl); |
| 826 | 299 static void update_line_start_cache (struct window *w, Charbpos from, |
| 300 Charbpos to, Charbpos point, | |
| 301 int no_regen); | |
| 665 | 302 static int point_visible (struct window *w, Charbpos point, int type); |
| 819 | 303 static void calculate_yoffset (struct display_line *dl, |
| 4187 | 304 struct display_block *fixup); |
| 819 | 305 static void calculate_baseline (pos_data *data); |
| 428 | 306 |
| 1204 | 307 #ifdef ERROR_CHECK_DISPLAY |
| 800 | 308 static void sledgehammer_check_redisplay_structs (void); |
| 1204 | 309 #endif /* ERROR_CHECK_DISPLAY */ |
| 800 | 310 |
| 428 | 311 /* This used to be 10 but 30 seems to give much better performance. */ |
| 312 #define INIT_MAX_PREEMPTS 30 | |
| 1268 | 313 static Fixnum max_preempts; |
| 314 | |
| 315 #define QUEUED_EVENTS_REQUIRED_FOR_PREEMPTION 4 | |
| 428 | 316 |
| 1318 | 317 /* Note that doing this can call Lisp. */ |
| 428 | 318 #define REDISPLAY_PREEMPTION_CHECK \ |
| 319 ((void) \ | |
| 320 (preempted = \ | |
| 321 (!disable_preemption && \ | |
| 322 ((preemption_count < max_preempts) || !NILP (Vexecuting_macro)) && \ | |
| 4187 | 323 (!INTERACTIVE || \ |
| 1268 | 324 detect_input_pending (QUEUED_EVENTS_REQUIRED_FOR_PREEMPTION))))) |
| 428 | 325 |
| 326 /* | |
| 327 * Redisplay global variables. | |
| 328 */ | |
| 329 | |
| 330 /* We need a third set of display structures for the cursor motion | |
| 331 routines. We used to just give each window a third set. However, | |
| 332 we always fully regenerate the structures when needed so there | |
| 333 isn't any reason we need more than a single set. */ | |
| 334 display_line_dynarr *cmotion_display_lines; | |
| 335 | |
| 336 /* We store the extents that we need to generate in a Dynarr and then | |
| 337 frob them all on at the end of generating the string. We do it | |
| 338 this way rather than adding them as we generate the string because | |
| 339 we don't store the text into the resulting string until we're done | |
| 340 (to avoid having to resize the string multiple times), and we don't | |
| 341 want to go around adding extents to a string when the extents might | |
| 342 stretch off the end of the string. */ | |
| 343 static EXTENT_dynarr *formatted_string_extent_dynarr; | |
| 344 static Bytecount_dynarr *formatted_string_extent_start_dynarr; | |
| 345 static Bytecount_dynarr *formatted_string_extent_end_dynarr; | |
| 346 | |
| 347 | |
| 348 /* #### probably temporary */ | |
| 458 | 349 Fixnum cache_adjustment; |
| 428 | 350 |
| 351 /* This holds a string representing the text corresponding to a single | |
| 352 modeline % spec. */ | |
| 867 | 353 static Ibyte_dynarr *mode_spec_ibyte_string; |
| 428 | 354 |
| 355 int in_display; /* 1 if in redisplay. */ | |
| 356 | |
| 1318 | 357 /* Whether we should delay size changes. Broken out of |
| 358 enter_redisplay_critical_section(). */ | |
| 359 int hold_frame_size_changes; | |
| 360 | |
| 428 | 361 int disable_preemption; /* Used for debugging redisplay and for |
| 362 force-redisplay. */ | |
| 363 | |
| 364 /* We only allow max_preempts preemptions before we force a redisplay. */ | |
| 365 static int preemption_count; | |
| 366 | |
| 367 /* Minimum pixel height of clipped bottom display line. */ | |
| 458 | 368 Fixnum vertical_clip; |
| 428 | 369 |
| 370 /* Minimum visible pixel width of clipped glyphs at right margin. */ | |
| 458 | 371 Fixnum horizontal_clip; |
| 428 | 372 |
| 373 /* Nonzero means reading single-character input with prompt | |
| 374 so put cursor on minibuffer after the prompt. */ | |
| 375 int cursor_in_echo_area; | |
| 376 Lisp_Object Qcursor_in_echo_area; | |
| 377 | |
| 378 /* Nonzero means truncate lines in all windows less wide than the frame */ | |
| 379 int truncate_partial_width_windows; | |
| 380 | |
| 381 /* non-nil if a buffer has changed since the last time redisplay completed */ | |
| 382 int buffers_changed; | |
| 383 int buffers_changed_set; | |
| 384 | |
| 385 /* non-nil if hscroll has changed somewhere or a buffer has been | |
| 386 narrowed or widened */ | |
| 387 int clip_changed; | |
| 388 int clip_changed_set; | |
| 389 | |
| 390 /* non-nil if any extent has changed since the last time redisplay completed */ | |
| 391 int extents_changed; | |
| 392 int extents_changed_set; | |
| 393 | |
| 394 /* non-nil if any face has changed since the last time redisplay completed */ | |
| 395 int faces_changed; | |
| 396 | |
| 397 /* Nonzero means some frames have been marked as garbaged */ | |
| 398 int frame_changed; | |
| 399 | |
| 400 /* non-zero if any of the builtin display glyphs (continuation, | |
| 401 hscroll, control-arrow, etc) is in need of updating | |
| 402 somewhere. */ | |
| 403 int glyphs_changed; | |
| 404 int glyphs_changed_set; | |
| 405 | |
| 442 | 406 /* non-zero if any subwindow has been deleted. */ |
| 428 | 407 int subwindows_changed; |
| 408 int subwindows_changed_set; | |
| 409 | |
| 410 /* non-zero if any displayed subwindow is in need of updating | |
| 411 somewhere. */ | |
| 412 int subwindows_state_changed; | |
| 413 int subwindows_state_changed_set; | |
| 414 | |
| 415 /* This variable is 1 if the icon has to be updated. | |
| 416 It is set to 1 when `frame-icon-glyph' changes. */ | |
| 417 int icon_changed; | |
| 418 int icon_changed_set; | |
| 419 | |
| 420 /* This variable is 1 if the menubar widget has to be updated. | |
| 421 It is set to 1 by set-menubar-dirty-flag and cleared when the widget | |
| 422 has been updated. */ | |
| 423 int menubar_changed; | |
| 424 int menubar_changed_set; | |
| 425 | |
| 426 /* true iff we should redraw the modelines on the next redisplay */ | |
| 427 int modeline_changed; | |
| 428 int modeline_changed_set; | |
| 429 | |
| 430 /* non-nil if point has changed in some buffer since the last time | |
| 431 redisplay completed */ | |
| 432 int point_changed; | |
| 433 int point_changed_set; | |
| 434 | |
| 435 /* non-nil if some frame has changed its size */ | |
| 436 int size_changed; | |
| 437 | |
| 438 /* non-nil if some device has signaled that it wants to change size */ | |
| 439 int asynch_device_change_pending; | |
| 440 | |
| 441 /* non-nil if any toolbar has changed */ | |
| 442 int toolbar_changed; | |
| 443 int toolbar_changed_set; | |
| 444 | |
| 905 | 445 /* Nonzero if some frame has changed the layout of internal elements |
| 446 (gutters or toolbars). */ | |
| 447 int frame_layout_changed; | |
| 448 | |
| 428 | 449 /* non-nil if any gutter has changed */ |
| 450 int gutter_changed; | |
| 451 int gutter_changed_set; | |
| 452 | |
| 453 /* non-nil if any window has changed since the last time redisplay completed */ | |
| 454 int windows_changed; | |
| 455 | |
| 456 /* non-nil if any frame's window structure has changed since the last | |
| 457 time redisplay completed */ | |
| 458 int windows_structure_changed; | |
| 459 | |
| 460 /* If non-nil, use vertical bar cursor. */ | |
| 461 Lisp_Object Vbar_cursor; | |
| 462 Lisp_Object Qbar_cursor; | |
| 463 | |
| 442 | 464 Lisp_Object Vvisible_bell; /* If true and the terminal will support it |
| 465 then the frame will flash instead of | |
| 466 beeping when an error occurs */ | |
| 428 | 467 |
| 468 /* Nonzero means no need to redraw the entire frame on resuming | |
| 469 a suspended Emacs. This is useful on terminals with multiple pages, | |
| 470 where one page is used for Emacs and another for all else. */ | |
| 471 int no_redraw_on_reenter; | |
| 472 | |
| 3360 | 473 Lisp_Object Vwindow_system; /* #### this variable is deprecated |
| 474 nil or a symbol naming the window system | |
| 428 | 475 under which emacs is running |
| 3360 | 476 (`x', `gtk', `mswindows', and `tty' are |
| 477 supported -- yes, TTYs are window systems | |
| 478 for this purpose. */ | |
|
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changeset
|
479 Lisp_Object Vinitial_device_type; |
| 428 | 480 |
| 481 Lisp_Object Vglobal_mode_string; | |
| 482 | |
| 483 /* The number of lines scroll a window by when point leaves the window; if | |
| 484 it is <=0 then point is centered in the window */ | |
| 458 | 485 Fixnum scroll_step; |
| 428 | 486 |
| 487 /* Scroll up to this many lines, to bring point back on screen. */ | |
| 458 | 488 Fixnum scroll_conservatively; |
| 428 | 489 |
| 490 /* Marker for where to display an arrow on top of the buffer text. */ | |
| 491 Lisp_Object Voverlay_arrow_position; | |
| 492 /* String to display for the arrow. */ | |
| 493 Lisp_Object Voverlay_arrow_string; | |
| 494 | |
| 442 | 495 Lisp_Object Qbuffer_list_changed_hook, Vbuffer_list_changed_hook; |
| 496 | |
| 458 | 497 static Fixnum last_display_warning_tick; |
| 498 static Fixnum display_warning_tick; | |
| 428 | 499 Lisp_Object Qdisplay_warning_buffer; |
| 500 int inhibit_warning_display; | |
| 501 | |
| 502 Lisp_Object Vleft_margin_width, Vright_margin_width; | |
| 503 Lisp_Object Vminimum_line_ascent, Vminimum_line_descent; | |
| 504 Lisp_Object Vuse_left_overflow, Vuse_right_overflow; | |
| 505 Lisp_Object Vtext_cursor_visible_p; | |
| 506 | |
| 1292 | 507 static Lisp_Object QSin_redisplay; |
| 508 | |
| 1318 | 509 static Lisp_Object Vpost_redisplay_actions; |
| 510 | |
| 428 | 511 int column_number_start_at_one; |
| 512 | |
| 442 | 513 Lisp_Object Qtop_bottom; |
| 514 | |
| 444 | 515 #define WINDOW_SCROLLED(w) ((w)->hscroll > 0 || (w)->left_xoffset) |
| 428 | 516 |
| 1204 | 517 static const struct memory_description rune_dglyph_description_1[] = { |
| 518 { XD_LISP_OBJECT, offsetof (struct rune_dglyph, glyph) }, | |
| 519 { XD_LISP_OBJECT, offsetof (struct rune_dglyph, extent) }, | |
| 520 { XD_END } | |
| 521 }; | |
| 522 | |
| 523 static const struct sized_memory_description rune_dglyph_description = { | |
| 524 sizeof (struct rune_dglyph), rune_dglyph_description_1 | |
| 525 }; | |
| 526 | |
| 527 static const struct memory_description rune_object_description_1[] = { | |
| 2551 | 528 { XD_BLOCK_ARRAY, RUNE_DGLYPH, 1, { &rune_dglyph_description } }, |
| 1204 | 529 { XD_END } |
| 530 }; | |
| 531 | |
| 532 static const struct sized_memory_description rune_object_description = { | |
| 533 0, rune_object_description_1 | |
| 534 }; | |
| 535 | |
| 536 static const struct memory_description rune_description_1[] = { | |
| 537 { XD_INT, offsetof (rune, type) }, | |
| 538 { XD_UNION, offsetof (rune, object), | |
| 2551 | 539 XD_INDIRECT (0, 0), { &rune_object_description } }, |
| 1204 | 540 { XD_END } |
| 541 }; | |
| 542 | |
| 543 static const struct sized_memory_description rune_description = { | |
| 544 sizeof (rune), | |
| 545 rune_description_1 | |
| 546 }; | |
| 547 | |
| 548 static const struct memory_description rune_dynarr_description_1[] = { | |
| 549 XD_DYNARR_DESC (rune_dynarr, &rune_description), | |
| 550 { XD_END } | |
| 551 }; | |
| 552 | |
| 553 static const struct sized_memory_description rune_dynarr_description = { | |
| 554 sizeof (rune_dynarr), | |
| 555 rune_dynarr_description_1 | |
| 556 }; | |
| 557 | |
| 558 static const struct memory_description display_block_description_1[] = { | |
| 2367 | 559 { XD_BLOCK_PTR, offsetof (display_block, runes), |
| 2551 | 560 1, { &rune_dynarr_description } }, |
| 1204 | 561 { XD_END } |
| 562 }; | |
| 563 | |
| 564 static const struct sized_memory_description display_block_description = { | |
| 565 sizeof (display_block), | |
| 566 display_block_description_1 | |
| 567 }; | |
| 568 | |
| 569 static const struct memory_description display_block_dynarr_description_1[] = { | |
| 570 XD_DYNARR_DESC (display_block_dynarr, &display_block_description), | |
| 571 { XD_END } | |
| 572 }; | |
| 573 | |
| 574 static const struct sized_memory_description display_block_dynarr_description = { | |
| 575 sizeof (display_block_dynarr), | |
| 576 display_block_dynarr_description_1 | |
| 577 }; | |
| 578 | |
| 579 static const struct memory_description glyph_block_description_1[] = { | |
| 580 { XD_LISP_OBJECT, offsetof (glyph_block, glyph) }, | |
| 581 { XD_LISP_OBJECT, offsetof (glyph_block, extent) }, | |
| 582 { XD_END } | |
| 583 }; | |
| 584 | |
| 585 static const struct sized_memory_description glyph_block_description = { | |
| 586 sizeof (glyph_block), | |
| 587 glyph_block_description_1 | |
| 588 }; | |
| 589 | |
| 590 static const struct memory_description glyph_block_dynarr_description_1[] = { | |
| 591 XD_DYNARR_DESC (glyph_block_dynarr, &glyph_block_description), | |
| 592 { XD_END } | |
| 593 }; | |
| 594 | |
| 595 static const struct sized_memory_description glyph_block_dynarr_description = { | |
| 596 sizeof (glyph_block_dynarr), | |
| 597 glyph_block_dynarr_description_1 | |
| 598 }; | |
| 599 | |
| 600 static const struct memory_description display_line_description_1[] = { | |
| 2367 | 601 { XD_BLOCK_PTR, offsetof (display_line, display_blocks), |
| 2551 | 602 1, { &display_block_dynarr_description } }, |
| 2367 | 603 { XD_BLOCK_PTR, offsetof (display_line, left_glyphs), |
| 2551 | 604 1, { &glyph_block_dynarr_description } }, |
| 2367 | 605 { XD_BLOCK_PTR, offsetof (display_line, right_glyphs), |
| 2551 | 606 1, { &glyph_block_dynarr_description } }, |
| 1204 | 607 { XD_END } |
| 608 }; | |
| 609 | |
| 610 static const struct sized_memory_description display_line_description = { | |
| 611 sizeof (display_line), | |
| 612 display_line_description_1 | |
| 613 }; | |
| 614 | |
| 615 static const struct memory_description display_line_dynarr_description_1[] = { | |
| 616 XD_DYNARR_DESC (display_line_dynarr, &display_line_description), | |
| 617 { XD_END } | |
| 618 }; | |
| 619 | |
| 620 const struct sized_memory_description display_line_dynarr_description = { | |
| 621 sizeof (display_line_dynarr), | |
| 622 display_line_dynarr_description_1 | |
| 623 }; | |
| 624 | |
| 428 | 625 |
| 626 /***************************************************************************/ | |
| 627 /* */ | |
| 628 /* low-level interfaces onto device routines */ | |
| 629 /* */ | |
| 630 /***************************************************************************/ | |
| 631 | |
| 632 static int | |
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633 redisplay_window_text_width_ichar_string (struct window *w, int findex, |
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634 Ichar *str, Charcount len) |
| 428 | 635 { |
| 636 unsigned char charsets[NUM_LEADING_BYTES]; | |
| 637 Lisp_Object window; | |
| 638 | |
| 867 | 639 find_charsets_in_ichar_string (charsets, str, len); |
| 793 | 640 window = wrap_window (w); |
| 428 | 641 ensure_face_cachel_complete (WINDOW_FACE_CACHEL (w, findex), window, |
| 642 charsets); | |
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643 return DEVMETH (WINDOW_XDEVICE (w), |
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644 text_width, (w, WINDOW_FACE_CACHEL (w, findex), str, |
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645 len)); |
| 428 | 646 } |
| 647 | |
| 867 | 648 static Ichar_dynarr *rtw_ichar_dynarr; |
| 428 | 649 |
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650 static int |
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651 redisplay_window_text_width_string (struct window *w, int findex, |
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652 Ibyte *nonreloc, Lisp_Object reloc, |
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653 Bytecount offset, Bytecount len) |
| 428 | 654 { |
| 867 | 655 if (!rtw_ichar_dynarr) |
| 656 rtw_ichar_dynarr = Dynarr_new (Ichar); | |
| 657 Dynarr_reset (rtw_ichar_dynarr); | |
| 428 | 658 |
| 659 fixup_internal_substring (nonreloc, reloc, offset, &len); | |
| 660 if (STRINGP (reloc)) | |
| 661 nonreloc = XSTRING_DATA (reloc); | |
| 867 | 662 convert_ibyte_string_into_ichar_dynarr (nonreloc, len, rtw_ichar_dynarr); |
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663 return redisplay_window_text_width_ichar_string |
| 4967 | 664 (w, findex, Dynarr_begin (rtw_ichar_dynarr), |
| 867 | 665 Dynarr_length (rtw_ichar_dynarr)); |
| 428 | 666 } |
| 667 | |
| 668 int | |
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669 redisplay_text_width_string (Lisp_Object domain, Lisp_Object face, |
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670 Ibyte *nonreloc, Lisp_Object reloc, |
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671 Bytecount offset, Bytecount len) |
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672 { |
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673 Lisp_Object window = DOMAIN_WINDOW (domain); |
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674 Lisp_Object frame = DOMAIN_FRAME (domain); |
| 428 | 675 unsigned char charsets[NUM_LEADING_BYTES]; |
| 676 struct face_cachel cachel; | |
| 677 | |
| 867 | 678 if (!rtw_ichar_dynarr) |
| 679 rtw_ichar_dynarr = Dynarr_new (Ichar); | |
| 680 Dynarr_reset (rtw_ichar_dynarr); | |
| 428 | 681 |
| 682 fixup_internal_substring (nonreloc, reloc, offset, &len); | |
| 683 if (STRINGP (reloc)) | |
| 684 nonreloc = XSTRING_DATA (reloc); | |
| 867 | 685 convert_ibyte_string_into_ichar_dynarr (nonreloc, len, rtw_ichar_dynarr); |
| 686 find_charsets_in_ibyte_string (charsets, nonreloc, len); | |
| 428 | 687 reset_face_cachel (&cachel); |
| 688 cachel.face = face; | |
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689 ensure_face_cachel_complete (&cachel, |
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690 NILP (window) ? frame : window, |
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691 charsets); |
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692 return DEVMETH (XDEVICE (FRAME_DEVICE (XFRAME (frame))), |
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693 /* #### Not clear if we're always passed a window, but |
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694 I think so. If not, we will get an abort here, |
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695 and then we need to either fix the callers to pass in |
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696 a window, or change *text_width() to take a domain |
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697 argument. */ |
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698 text_width, (XWINDOW (window), |
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699 &cachel, |
| 4967 | 700 Dynarr_begin (rtw_ichar_dynarr), |
| 867 | 701 Dynarr_length (rtw_ichar_dynarr))); |
| 428 | 702 } |
| 703 | |
| 704 /* Return the display block from DL of the given TYPE. A display line | |
| 705 can have only one display block of each possible type. If DL does | |
| 706 not have a block of type TYPE, one will be created and added to DL. */ | |
| 707 | |
| 708 struct display_block * | |
| 709 get_display_block_from_line (struct display_line *dl, enum display_type type) | |
| 710 { | |
| 711 int elt; | |
| 712 struct display_block db; | |
| 713 | |
| 714 /* Check if this display line already has a block of the desired type and | |
| 715 if so, return it. */ | |
| 716 if (dl->display_blocks) | |
| 717 { | |
| 718 for (elt = 0; elt < Dynarr_length (dl->display_blocks); elt++) | |
| 719 { | |
| 720 if (Dynarr_at (dl->display_blocks, elt).type == type) | |
| 721 return Dynarr_atp (dl->display_blocks, elt); | |
| 722 } | |
| 723 | |
| 724 /* There isn't an active block of the desired type, but there | |
| 4187 | 725 might still be allocated blocks we need to reuse. */ |
| 428 | 726 if (elt < Dynarr_largest (dl->display_blocks)) |
| 727 { | |
| 728 struct display_block *dbp = Dynarr_atp (dl->display_blocks, elt); | |
| 729 | |
| 3025 | 730 /* "add" the block to the list */ |
| 5038 | 731 Dynarr_incrementr (dl->display_blocks); |
| 428 | 732 |
| 733 /* initialize and return */ | |
| 734 dbp->type = type; | |
| 735 return dbp; | |
| 736 } | |
| 737 } | |
| 738 else | |
| 739 { | |
| 740 /* This line doesn't have any display blocks, so initialize the display | |
| 4187 | 741 bock array. */ |
| 428 | 742 dl->display_blocks = Dynarr_new (display_block); |
| 743 } | |
| 744 | |
| 745 /* The line doesn't have a block of the desired type so go ahead and create | |
| 746 one and add it to the line. */ | |
| 747 xzero (db); | |
| 748 db.type = type; | |
| 749 db.runes = Dynarr_new (rune); | |
| 750 Dynarr_add (dl->display_blocks, db); | |
| 751 | |
| 752 /* Return the newly added display block. */ | |
| 753 elt = Dynarr_length (dl->display_blocks) - 1; | |
| 754 | |
| 755 return Dynarr_atp (dl->display_blocks, elt); | |
| 756 } | |
| 757 | |
| 758 static int | |
| 759 tab_char_width (struct window *w) | |
| 760 { | |
| 761 struct buffer *b = XBUFFER (w->buffer); | |
| 762 int char_tab_width = XINT (b->tab_width); | |
| 763 | |
| 764 if (char_tab_width <= 0 || char_tab_width > 1000) char_tab_width = 8; | |
| 765 | |
| 766 return char_tab_width; | |
| 767 } | |
| 768 | |
| 769 static int | |
| 770 space_width (struct window *w) | |
| 771 { | |
| 3659 | 772 /* While tabs are traditionally composed of spaces, for variable-width |
| 428 | 773 fonts the space character tends to give too narrow a value. So |
| 774 we use 'n' instead. Except that we don't. We use the default | |
| 775 character width for the default face. If this is actually | |
| 776 defined by the font then it is probably the best thing to | |
| 777 actually use. If it isn't, we have assumed it is 'n' and have | |
| 778 already calculated its width. Thus we can avoid a call to | |
| 779 XTextWidth on X frames by just querying the default width. */ | |
| 780 return XFONT_INSTANCE | |
| 781 (WINDOW_FACE_CACHEL_FONT (w, DEFAULT_INDEX, Vcharset_ascii))->width; | |
| 782 } | |
| 783 | |
| 784 static int | |
| 785 tab_pix_width (struct window *w) | |
| 786 { | |
| 787 return space_width (w) * tab_char_width (w); | |
| 788 } | |
| 789 | |
| 790 /* Given a pixel position in a window, return the pixel location of | |
| 791 the next tabstop. Tabs are calculated from the left window edge in | |
| 792 terms of spaces displayed in the default face. Formerly the space | |
| 793 width was determined using the currently active face. That method | |
| 794 leads to tabstops which do not line up. */ | |
| 795 | |
| 796 static int | |
| 797 next_tab_position (struct window *w, int start_pixpos, int left_pixpos) | |
| 798 { | |
| 799 int n_pos = left_pixpos; | |
| 800 int pix_tab_width = tab_pix_width (w); | |
| 801 | |
| 802 /* Adjust n_pos for any hscrolling which has happened. */ | |
| 803 if (WINDOW_SCROLLED (w)) | |
| 804 n_pos -= space_width (w) * (w->hscroll - 1) + w->left_xoffset; | |
| 805 | |
| 806 while (n_pos <= start_pixpos) | |
| 807 n_pos += pix_tab_width; | |
| 808 | |
| 809 return n_pos; | |
| 810 } | |
| 811 | |
| 812 /* For the given window, calculate the outside and margin boundaries for a | |
| 813 display line. The whitespace boundaries must be calculated by the text | |
| 814 layout routines. */ | |
| 815 | |
| 816 layout_bounds | |
| 817 calculate_display_line_boundaries (struct window *w, int modeline) | |
| 818 { | |
| 819 layout_bounds bounds; | |
| 820 | |
| 821 /* Set the outermost boundaries which are the boundaries of the | |
| 822 window itself minus the gutters (and minus the scrollbars if this | |
| 823 is for the modeline). */ | |
| 824 if (!modeline) | |
| 825 { | |
| 826 bounds.left_out = WINDOW_TEXT_LEFT (w); | |
| 827 bounds.right_out = WINDOW_TEXT_RIGHT (w); | |
| 828 } | |
| 829 else | |
| 830 { | |
| 831 bounds.left_out = WINDOW_MODELINE_LEFT (w); | |
| 832 bounds.right_out = WINDOW_MODELINE_RIGHT (w); | |
| 833 } | |
| 834 | |
| 835 /* The inner boundaries mark where the glyph margins are located. */ | |
| 836 bounds.left_in = bounds.left_out + window_left_margin_width (w); | |
| 837 bounds.right_in = bounds.right_out - window_right_margin_width (w); | |
| 838 | |
| 839 /* We cannot fully calculate the whitespace boundaries as they | |
| 840 depend on the contents of the line being displayed. */ | |
| 841 bounds.left_white = bounds.left_in; | |
| 842 bounds.right_white = bounds.right_in; | |
| 843 | |
| 844 return bounds; | |
| 845 } | |
| 846 | |
| 819 | 847 /* This takes a display_block and its containing line and corrects the yoffset |
| 848 of each glyph in the block to cater for the ascent of the line as a | |
| 849 whole. Must be called *after* the line-ascent is known! */ | |
| 850 | |
| 851 static void | |
| 852 calculate_yoffset (struct display_line *dl, struct display_block *fixup) | |
| 853 { | |
| 854 int i; | |
| 855 for (i=0; i<Dynarr_length (fixup->runes); i++) | |
| 856 { | |
| 857 struct rune *r = Dynarr_atp (fixup->runes,i); | |
| 858 if (r->type == RUNE_DGLYPH) | |
| 4187 | 859 { |
| 860 if (r->object.dglyph.ascent < dl->ascent) | |
| 861 r->object.dglyph.yoffset = dl->ascent - r->object.dglyph.ascent + | |
| 819 | 862 r->object.dglyph.descent; |
| 4187 | 863 } |
| 819 | 864 } |
| 865 } | |
| 866 | |
| 867 /* Calculate the textual baseline (the ascent and descent values for the | |
| 868 display_line as a whole). | |
| 869 | |
| 870 If the baseline is completely blank, or contains no manually positioned | |
| 871 glyphs, then the textual baseline is simply the baseline of the default font. | |
| 872 (The `contains no manually positioned glyphs' part is actually done for | |
| 867 | 873 us by `add_ichar_rune'.) |
| 819 | 874 |
| 875 If the baseline contains pixmaps, and they're all manually positioned, then | |
| 876 the textual baseline location is constrained that way, and we need do no | |
| 877 work. | |
| 878 | |
| 879 If the baseline contains pixmaps, and at least one is automatically | |
| 880 positioned, then the textual ascent is the largest ascent on the line, and | |
| 881 the textual descent is the largest descent (which is how things are set up at | |
| 882 entry to this function anyway): except that if the max_ascent + max_descent | |
| 883 is too small for the height of the line (say you've adjusted the baseline of | |
| 884 a short glyph, and there's a tall one next to it), then take the ascent and | |
| 885 descent for the line individually from the largest of the explicitly set | |
| 886 ascent/descent, and the rescaled ascent/descent of the default font, scaled | |
| 887 such that the largest glyph will fit. | |
| 888 | |
| 889 This means that if you have a short glyph (but taller than the default | |
| 890 font's descent) forced right under the baseline, and a really tall | |
| 891 automatically positioned glyph, that the descent for the line is just big | |
| 892 enough for the manually positioned short glyph, and the tall one uses as | |
| 893 much of that space as the default font would were it as tall as the tall | |
| 894 glyph; but that the ascent is big enough for the tall glyph to fit. | |
| 895 | |
| 896 This behaviour means that under no circumstances will changing the baseline | |
| 897 of a short glyph cause a tall glyph to move around; nor will it move the | |
| 898 textual baseline more than necessary. (Changing a tall glyph's baseline | |
| 899 might move the text's baseline arbitrarily, of course.) */ | |
| 900 | |
| 901 static void | |
| 902 calculate_baseline (pos_data *data) | |
| 903 { | |
| 904 /* Blank line: baseline is default font's baseline. */ | |
| 905 | |
| 906 if (!data->new_ascent && !data->new_descent) | |
| 907 { | |
| 908 /* We've got a blank line so initialize these values from the default | |
| 4187 | 909 face. */ |
| 819 | 910 default_face_font_info (data->window, &data->new_ascent, |
| 911 &data->new_descent, 0, 0, 0); | |
| 912 } | |
| 4187 | 913 |
| 819 | 914 /* No automatically positioned glyphs? Return at once. */ |
| 915 if (!data->need_baseline_computation) | |
| 916 return; | |
| 917 | |
| 918 /* Is the tallest glyph on the line automatically positioned? | |
| 919 If it's manually positioned, or it's automatically positioned | |
| 920 and there's enough room for it anyway, we need do no more work. */ | |
| 921 if (data->max_pixmap_height > data->new_ascent + data->new_descent) | |
| 922 { | |
| 923 int default_font_ascent, default_font_descent, default_font_height; | |
| 924 int scaled_default_font_ascent, scaled_default_font_descent; | |
| 4187 | 925 |
| 819 | 926 default_face_font_info (data->window, &default_font_ascent, |
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927 &default_font_descent, 0, &default_font_height, |
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928 0); |
| 819 | 929 |
| 930 scaled_default_font_ascent = data->max_pixmap_height * | |
| 931 default_font_ascent / default_font_height; | |
| 932 | |
| 933 data->new_ascent = max (data->new_ascent, scaled_default_font_ascent); | |
| 934 | |
| 935 /* The ascent may have expanded now. Do we still need to grow the descent, | |
| 4187 | 936 or are things big enough? |
| 937 | |
| 938 The +1 caters for the baseline row itself. */ | |
| 819 | 939 if (data->max_pixmap_height > data->new_ascent + data->new_descent) |
| 4187 | 940 { |
| 941 scaled_default_font_descent = (data->max_pixmap_height * | |
| 819 | 942 default_font_descent / default_font_height) + 1; |
| 943 | |
| 4187 | 944 data->new_descent = max (data->new_descent, scaled_default_font_descent); |
| 945 } | |
| 819 | 946 } |
| 947 } | |
| 948 | |
| 428 | 949 /* Given a display line and a starting position, ensure that the |
| 950 contents of the display line accurately represent the visual | |
| 951 representation of the buffer contents starting from the given | |
| 952 position when displayed in the given window. The display line ends | |
| 953 when the contents of the line reach the right boundary of the given | |
| 954 window. */ | |
| 955 | |
| 665 | 956 static Charbpos |
| 428 | 957 generate_display_line (struct window *w, struct display_line *dl, int bounds, |
| 665 | 958 Charbpos start_pos, prop_block_dynarr **prop, |
| 428 | 959 int type) |
| 960 { | |
| 826 | 961 Charbpos ret_charpos; |
| 428 | 962 int overlay_width; |
| 963 struct buffer *b = XBUFFER (WINDOW_BUFFER (w)); | |
| 964 | |
| 965 /* If our caller hasn't already set the boundaries, then do so now. */ | |
| 966 if (!bounds) | |
| 967 dl->bounds = calculate_display_line_boundaries (w, 0); | |
| 968 | |
| 969 /* Reset what this line is using. */ | |
| 970 if (dl->display_blocks) | |
| 971 Dynarr_reset (dl->display_blocks); | |
| 972 if (dl->left_glyphs) | |
| 973 { | |
| 974 Dynarr_free (dl->left_glyphs); | |
| 975 dl->left_glyphs = 0; | |
| 976 } | |
| 977 if (dl->right_glyphs) | |
| 978 { | |
| 979 Dynarr_free (dl->right_glyphs); | |
| 980 dl->right_glyphs = 0; | |
| 981 } | |
| 982 | |
| 983 /* We aren't generating a modeline at the moment. */ | |
| 984 dl->modeline = 0; | |
| 985 | |
| 986 /* Create a display block for the text region of the line. */ | |
| 987 { | |
| 988 /* #### urk urk urk!!! Chuck fix this shit! */ | |
| 665 | 989 Bytebpos hacked_up_bytebpos = |
| 990 create_text_block (w, dl, charbpos_to_bytebpos (b, start_pos), | |
| 428 | 991 prop, type); |
| 826 | 992 if (hacked_up_bytebpos > BYTE_BUF_ZV (b)) |
| 993 ret_charpos = BUF_ZV (b) + 1; | |
| 428 | 994 else |
| 826 | 995 ret_charpos = bytebpos_to_charbpos (b, hacked_up_bytebpos); |
| 428 | 996 } |
| 826 | 997 dl->charpos = start_pos; |
| 998 if (dl->end_charpos < dl->charpos) | |
| 999 dl->end_charpos = dl->charpos; | |
| 428 | 1000 |
| 1001 if (MARKERP (Voverlay_arrow_position) | |
| 1002 && EQ (w->buffer, Fmarker_buffer (Voverlay_arrow_position)) | |
| 1003 && start_pos == marker_position (Voverlay_arrow_position) | |
| 1004 && (STRINGP (Voverlay_arrow_string) | |
| 1005 || GLYPHP (Voverlay_arrow_string))) | |
| 1006 { | |
| 1007 overlay_width = create_overlay_glyph_block (w, dl); | |
| 1008 } | |
| 1009 else | |
| 1010 overlay_width = 0; | |
| 1011 | |
| 1012 /* If there are left glyphs associated with any character in the | |
| 1013 text block, then create a display block to handle them. */ | |
| 1014 if (dl->left_glyphs != NULL && Dynarr_length (dl->left_glyphs)) | |
| 1015 create_left_glyph_block (w, dl, overlay_width); | |
| 1016 | |
| 1017 /* If there are right glyphs associated with any character in the | |
| 1018 text block, then create a display block to handle them. */ | |
| 1019 if (dl->right_glyphs != NULL && Dynarr_length (dl->right_glyphs)) | |
| 1020 create_right_glyph_block (w, dl); | |
| 1021 | |
| 1022 /* In the future additional types of display blocks may be generated | |
| 1023 here. */ | |
| 1024 | |
| 826 | 1025 w->last_redisplay_pos = ret_charpos; |
| 1026 | |
| 1027 return ret_charpos; | |
| 428 | 1028 } |
| 1029 | |
| 1030 /* Adds an hscroll glyph to a display block. If this is called, then | |
| 1031 the block had better be empty. | |
| 1032 | |
| 1033 Yes, there are multiple places where this function is called but | |
| 1034 that is the way it has to be. Each calling function has to deal | |
| 826 | 1035 with byte_start_col_enabled a little differently depending on the |
| 428 | 1036 object being worked with. */ |
| 1037 | |
| 1038 static prop_block_dynarr * | |
| 1039 add_hscroll_rune (pos_data *data) | |
| 1040 { | |
| 1041 struct glyph_block gb; | |
| 1042 prop_block_dynarr *retval; | |
| 826 | 1043 Bytebpos byte_old_cursor_charpos = data->byte_cursor_charpos; |
| 647 | 1044 int old_cursor_type = data->cursor_type; |
| 826 | 1045 Bytebpos byte_old_charpos = data->byte_charpos; |
| 428 | 1046 |
| 1047 if (data->cursor_type == CURSOR_ON | |
| 826 | 1048 && data->byte_cursor_charpos >= data->byte_start_col_enabled |
| 1049 && data->byte_cursor_charpos <= data->byte_charpos) | |
| 1050 { | |
| 1051 data->byte_cursor_charpos = data->byte_start_col_enabled; | |
| 428 | 1052 } |
| 1053 else | |
| 1054 { | |
| 1055 data->cursor_type = NO_CURSOR; | |
| 1056 } | |
| 1057 | |
| 826 | 1058 data->byte_endpos = data->byte_charpos; |
| 1059 data->byte_charpos = data->byte_start_col_enabled; | |
| 428 | 1060 |
| 1061 gb.extent = Qnil; | |
| 1062 gb.glyph = Vhscroll_glyph; | |
| 1063 { | |
| 1064 int oldpixpos = data->pixpos; | |
| 442 | 1065 retval = add_glyph_rune (data, &gb, BEGIN_GLYPHS, 0, |
| 428 | 1066 GLYPH_CACHEL (XWINDOW (data->window), |
| 1067 HSCROLL_GLYPH_INDEX)); | |
| 1068 data->hscroll_glyph_width_adjust = | |
| 1069 data->pixpos - oldpixpos - space_width (XWINDOW (data->window)); | |
| 1070 } | |
| 826 | 1071 data->byte_endpos = 0; |
| 1072 data->byte_cursor_charpos = byte_old_cursor_charpos; | |
| 428 | 1073 data->cursor_type = old_cursor_type; |
| 826 | 1074 data->byte_charpos = byte_old_charpos; |
| 1075 | |
| 1076 data->byte_start_col_enabled = 0; | |
| 428 | 1077 return retval; |
| 1078 } | |
| 1079 | |
| 793 | 1080 /* Adds a character rune to a display block. If there is not enough room |
| 1081 to fit the rune on the display block (as determined by the MAX_PIXPOS) | |
| 1082 then it adds nothing and returns ADD_FAILED. If | |
| 1083 NO_CONTRIBUTE_TO_LINE_HEIGHT is non-zero, don't allow the char's height | |
| 867 | 1084 to affect the total line height. (See add_ibyte_string_runes()). */ |
| 428 | 1085 |
| 1086 static prop_block_dynarr * | |
| 867 | 1087 add_ichar_rune_1 (pos_data *data, int no_contribute_to_line_height) |
| 428 | 1088 { |
| 1089 struct rune rb, *crb; | |
| 1090 int width, local; | |
| 1091 | |
| 1092 if (data->start_col) | |
| 1093 { | |
| 1094 data->start_col--; | |
| 1095 | |
| 1096 if (data->start_col) | |
| 1097 return NULL; | |
| 1098 } | |
| 1099 | |
| 826 | 1100 if (data->byte_start_col_enabled) |
| 428 | 1101 { |
| 1102 return add_hscroll_rune (data); | |
| 1103 } | |
| 1104 | |
| 1105 if (data->ch == '\n') | |
| 1106 { | |
| 1107 data->font_is_bogus = 0; | |
| 1108 /* Cheesy end-of-line pseudo-character. */ | |
| 1109 width = data->blank_width; | |
| 1110 } | |
| 1111 else | |
| 1112 { | |
| 867 | 1113 Lisp_Object charset = ichar_charset (data->ch); |
| 428 | 1114 if (!EQ (charset, data->last_charset) || |
| 1115 data->findex != data->last_findex) | |
| 1116 { | |
| 1117 /* OK, we need to do things the hard way. */ | |
| 1118 struct window *w = XWINDOW (data->window); | |
| 1119 struct face_cachel *cachel = WINDOW_FACE_CACHEL (w, data->findex); | |
| 1120 Lisp_Object font_instance = | |
| 1121 ensure_face_cachel_contains_charset (cachel, data->window, | |
| 1122 charset); | |
| 440 | 1123 Lisp_Font_Instance *fi; |
| 428 | 1124 |
| 1125 if (EQ (font_instance, Vthe_null_font_instance)) | |
| 1126 { | |
| 1127 font_instance = FACE_CACHEL_FONT (cachel, Vcharset_ascii); | |
| 1128 data->font_is_bogus = 1; | |
| 1129 } | |
| 1130 else | |
| 1131 data->font_is_bogus = 0; | |
| 1132 | |
| 1133 fi = XFONT_INSTANCE (font_instance); | |
| 771 | 1134 if (!fi->proportional_p || data->font_is_bogus) |
| 1135 { | |
| 867 | 1136 Ichar ch = data->font_is_bogus ? '~' : data->ch; |
| 771 | 1137 |
| 1138 data->last_char_width = | |
|
4815
6540302eedf5
Fix query_string_geometry lookup domain
Didier Verna <didier@lrde.epita.fr>
parents:
4528
diff
changeset
|
1139 redisplay_window_text_width_ichar_string |
|
6540302eedf5
Fix query_string_geometry lookup domain
Didier Verna <didier@lrde.epita.fr>
parents:
4528
diff
changeset
|
1140 (XWINDOW (data->window), data->findex, &ch, 1); |
| 771 | 1141 } |
| 428 | 1142 else |
| 1143 data->last_char_width = -1; | |
| 819 | 1144 |
| 793 | 1145 if (!no_contribute_to_line_height) |
| 1146 { | |
| 1147 data->new_ascent = max (data->new_ascent, (int) fi->ascent); | |
| 1148 data->new_descent = max (data->new_descent, (int) fi->descent); | |
| 1149 } | |
| 819 | 1150 |
| 428 | 1151 data->last_charset = charset; |
| 1152 data->last_findex = data->findex; | |
| 1153 } | |
| 1154 | |
| 1155 width = data->last_char_width; | |
| 771 | 1156 if (width < 0) /* proportional fonts */ |
|
4815
6540302eedf5
Fix query_string_geometry lookup domain
Didier Verna <didier@lrde.epita.fr>
parents:
4528
diff
changeset
|
1157 width = redisplay_window_text_width_ichar_string |
|
6540302eedf5
Fix query_string_geometry lookup domain
Didier Verna <didier@lrde.epita.fr>
parents:
4528
diff
changeset
|
1158 (XWINDOW (data->window), data->findex, &data->ch, 1); |
| 428 | 1159 } |
| 1160 | |
| 1161 if (data->max_pixpos != -1 && (data->pixpos + width > data->max_pixpos)) | |
| 1162 { | |
| 1163 return ADD_FAILED; | |
| 1164 } | |
| 1165 | |
| 1166 if (Dynarr_length (data->db->runes) < Dynarr_largest (data->db->runes)) | |
| 1167 { | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
1168 crb = Dynarr_past_lastp (data->db->runes); |
| 428 | 1169 local = 0; |
| 1170 } | |
| 1171 else | |
| 1172 { | |
| 1173 crb = &rb; | |
| 1174 local = 1; | |
| 1175 } | |
| 1176 | |
| 1177 crb->findex = data->findex; | |
| 1178 crb->xpos = data->pixpos; | |
| 1179 crb->width = width; | |
| 826 | 1180 if (data->byte_charpos) |
| 428 | 1181 { |
| 1182 if (NILP (data->string)) | |
| 826 | 1183 crb->charpos = |
| 793 | 1184 bytebpos_to_charbpos (XBUFFER (WINDOW_BUFFER |
| 1185 (XWINDOW (data->window))), | |
| 826 | 1186 data->byte_charpos); |
| 428 | 1187 else |
| 826 | 1188 crb->charpos = |
| 1189 string_index_byte_to_char (data->string, data->byte_charpos); | |
| 428 | 1190 } |
| 1191 else if (data->is_modeline) | |
| 826 | 1192 crb->charpos = data->modeline_charpos; |
| 428 | 1193 else |
| 442 | 1194 /* Text but not in buffer */ |
| 826 | 1195 crb->charpos = 0; |
| 428 | 1196 crb->type = RUNE_CHAR; |
| 1197 crb->object.chr.ch = data->font_is_bogus ? '~' : data->ch; | |
| 1198 crb->endpos = 0; | |
| 1199 | |
| 1200 if (data->cursor_type == CURSOR_ON) | |
| 1201 { | |
| 826 | 1202 if (data->byte_charpos == data->byte_cursor_charpos) |
| 428 | 1203 { |
| 1204 crb->cursor_type = CURSOR_ON; | |
| 1205 data->cursor_x = Dynarr_length (data->db->runes); | |
| 1206 } | |
| 1207 else | |
| 1208 crb->cursor_type = CURSOR_OFF; | |
| 1209 } | |
| 1210 else if (data->cursor_type == NEXT_CURSOR) | |
| 1211 { | |
| 1212 crb->cursor_type = CURSOR_ON; | |
| 1213 data->cursor_x = Dynarr_length (data->db->runes); | |
| 1214 data->cursor_type = NO_CURSOR; | |
| 1215 } | |
| 1216 else if (data->cursor_type == IGNORE_CURSOR) | |
| 1217 crb->cursor_type = IGNORE_CURSOR; | |
| 1218 else | |
| 1219 crb->cursor_type = CURSOR_OFF; | |
| 1220 | |
| 1221 if (local) | |
| 1222 Dynarr_add (data->db->runes, *crb); | |
| 1223 else | |
| 5038 | 1224 Dynarr_incrementr (data->db->runes); |
| 428 | 1225 |
| 1226 data->pixpos += width; | |
| 1227 | |
| 1228 return NULL; | |
| 1229 } | |
| 1230 | |
| 793 | 1231 static prop_block_dynarr * |
| 867 | 1232 add_ichar_rune (pos_data *data) |
| 1233 { | |
| 1234 return add_ichar_rune_1 (data, 0); | |
| 1235 } | |
| 1236 | |
| 1237 /* Given a string C_STRING of length C_LENGTH, call add_ichar_rune for | |
| 793 | 1238 each character in the string. Propagate any left-over data unless |
| 1239 NO_PROP is non-zero. If NO_CONTRIBUTE_TO_LINE_HEIGHT is non-zero, don't | |
| 1240 allow this character to increase the total height of the line. (This is | |
| 1241 used when the character is part of a text glyph. In that case, the | |
| 1242 glyph code itself adjusts the line height as necessary, depending on | |
| 1243 whether glyph-contrib-p is true.) */ | |
| 428 | 1244 |
| 1245 static prop_block_dynarr * | |
| 867 | 1246 add_ibyte_string_runes (pos_data *data, Ibyte *c_string, |
| 793 | 1247 Bytecount c_length, int no_prop, |
| 1248 int no_contribute_to_line_height) | |
| 428 | 1249 { |
| 867 | 1250 Ibyte *pos, *end = c_string + c_length; |
| 428 | 1251 prop_block_dynarr *prop; |
| 1252 | |
| 1253 /* #### This function is too simplistic. It needs to do the same | |
| 1254 sort of character interpretation (display-table lookup, | |
| 1255 ctl-arrow checking), etc. that create_text_block() does. | |
| 1256 The functionality to do this in that routine needs to be | |
| 1257 modularized. */ | |
| 1258 | |
| 1259 for (pos = c_string; pos < end;) | |
| 1260 { | |
| 867 | 1261 Ibyte *old_pos = pos; |
| 1262 | |
| 1263 data->ch = itext_ichar (pos); | |
| 1264 | |
| 1265 prop = add_ichar_rune_1 (data, no_contribute_to_line_height); | |
| 428 | 1266 |
| 1267 if (prop) | |
| 1268 { | |
| 1269 if (no_prop) | |
| 1270 return ADD_FAILED; | |
| 1271 else | |
| 1272 { | |
| 1273 struct prop_block pb; | |
| 1274 Bytecount len = end - pos; | |
| 1275 prop = Dynarr_new (prop_block); | |
| 1276 | |
| 1277 pb.type = PROP_STRING; | |
| 867 | 1278 pb.data.p_string.str = xnew_array (Ibyte, len); |
| 4970 | 1279 qxestrncpy (pb.data.p_string.str, pos, len); |
| 428 | 1280 pb.data.p_string.len = len; |
| 1281 | |
| 1282 Dynarr_add (prop, pb); | |
| 1283 return prop; | |
| 1284 } | |
| 1285 } | |
| 867 | 1286 INC_IBYTEPTR (pos); |
| 428 | 1287 assert (pos <= end); |
| 464 | 1288 /* #### Duplicate code from add_string_to_fstring_db_runes |
| 1289 should we do more?*/ | |
| 1290 data->bytepos += pos - old_pos; | |
| 428 | 1291 } |
| 1292 | |
| 1293 return NULL; | |
| 1294 } | |
| 1295 | |
| 1296 /* Add a single rune of the specified width. The area covered by this | |
| 1297 rune will be displayed in the foreground color of the associated | |
| 1298 face. */ | |
| 1299 | |
| 1300 static prop_block_dynarr * | |
| 1301 add_blank_rune (pos_data *data, struct window *w, int char_tab_width) | |
| 1302 { | |
| 1303 struct rune rb; | |
| 1304 | |
| 1305 /* If data->start_col is not 0 then this call to add_blank_rune must have | |
| 1306 been to add it as a tab. */ | |
| 1307 if (data->start_col) | |
| 1308 { | |
| 1309 /* assert (w != NULL) */ | |
| 1310 prop_block_dynarr *retval; | |
| 1311 | |
| 1312 /* If we have still not fully scrolled horizontally, subtract | |
| 4187 | 1313 the width of this tab and return. */ |
| 428 | 1314 if (char_tab_width < data->start_col) |
| 1315 { | |
| 1316 data->start_col -= char_tab_width; | |
| 1317 return NULL; | |
| 1318 } | |
| 1319 else if (char_tab_width == data->start_col) | |
| 1320 data->blank_width = 0; | |
| 1321 else | |
| 1322 { | |
| 1323 int spcwid = space_width (w); | |
| 1324 | |
| 1325 if (spcwid >= data->blank_width) | |
| 1326 data->blank_width = 0; | |
| 1327 else | |
| 1328 data->blank_width -= spcwid; | |
| 1329 } | |
| 1330 | |
| 1331 data->start_col = 0; | |
| 1332 retval = add_hscroll_rune (data); | |
| 1333 | |
| 1334 /* Could be caused by the handling of the hscroll rune. */ | |
| 1335 if (retval != NULL || !data->blank_width) | |
| 1336 return retval; | |
| 1337 } | |
| 1338 | |
| 1339 /* Blank runes are always calculated to fit. */ | |
| 1340 assert (data->pixpos + data->blank_width <= data->max_pixpos); | |
| 1341 | |
| 1342 rb.findex = data->findex; | |
| 1343 rb.xpos = data->pixpos; | |
| 1344 rb.width = data->blank_width; | |
| 826 | 1345 if (data->byte_charpos) |
| 1346 rb.charpos = | |
| 665 | 1347 bytebpos_to_charbpos (XBUFFER (WINDOW_BUFFER (XWINDOW (data->window))), |
| 826 | 1348 data->byte_charpos); |
| 428 | 1349 else |
| 1350 /* #### and this is really correct too? */ | |
| 826 | 1351 rb.charpos = 0; |
| 428 | 1352 rb.endpos = 0; |
| 1353 rb.type = RUNE_BLANK; | |
| 1354 | |
| 1355 if (data->cursor_type == CURSOR_ON) | |
| 1356 { | |
| 826 | 1357 if (data->byte_charpos == data->byte_cursor_charpos) |
| 428 | 1358 { |
| 1359 rb.cursor_type = CURSOR_ON; | |
| 1360 data->cursor_x = Dynarr_length (data->db->runes); | |
| 1361 } | |
| 1362 else | |
| 1363 rb.cursor_type = CURSOR_OFF; | |
| 1364 } | |
| 1365 else if (data->cursor_type == NEXT_CURSOR) | |
| 1366 { | |
| 1367 rb.cursor_type = CURSOR_ON; | |
| 1368 data->cursor_x = Dynarr_length (data->db->runes); | |
| 1369 data->cursor_type = NO_CURSOR; | |
| 1370 } | |
| 1371 else | |
| 1372 rb.cursor_type = CURSOR_OFF; | |
| 1373 | |
| 1374 Dynarr_add (data->db->runes, rb); | |
| 1375 data->pixpos += data->blank_width; | |
| 1376 | |
| 1377 return NULL; | |
| 1378 } | |
| 1379 | |
| 1380 /* Add runes representing a character in octal. */ | |
| 1381 | |
| 1382 #define ADD_NEXT_OCTAL_RUNE_CHAR do \ | |
| 1383 { \ | |
| 867 | 1384 if (add_failed || (add_failed = add_ichar_rune (data))) \ |
| 428 | 1385 { \ |
| 1386 struct prop_block pb; \ | |
| 1387 if (!prop) \ | |
| 1388 prop = Dynarr_new (prop_block); \ | |
| 1389 \ | |
| 1390 pb.type = PROP_CHAR; \ | |
| 1391 pb.data.p_char.ch = data->ch; \ | |
| 1392 pb.data.p_char.cursor_type = data->cursor_type; \ | |
| 1393 Dynarr_add (prop, pb); \ | |
| 1394 } \ | |
| 1395 } while (0) | |
| 1396 | |
| 1397 static prop_block_dynarr * | |
| 1398 add_octal_runes (pos_data *data) | |
| 1399 { | |
| 819 | 1400 prop_block_dynarr *add_failed, *prop = 0; |
| 867 | 1401 Ichar orig_char = data->ch; |
| 647 | 1402 int orig_cursor_type = data->cursor_type; |
| 428 | 1403 |
| 1404 /* Initialize */ | |
| 1405 add_failed = NULL; | |
| 1406 | |
| 1407 if (data->start_col) | |
| 1408 data->start_col--; | |
| 1409 | |
| 1410 if (!data->start_col) | |
| 1411 { | |
| 826 | 1412 if (data->byte_start_col_enabled) |
| 428 | 1413 { |
| 1414 add_failed = add_hscroll_rune (data); | |
| 1415 } | |
| 1416 else | |
| 1417 { | |
| 1418 struct glyph_block gb; | |
| 1419 struct window *w = XWINDOW (data->window); | |
| 1420 | |
| 1421 gb.extent = Qnil; | |
| 1422 gb.glyph = Voctal_escape_glyph; | |
| 1423 add_failed = | |
| 1424 add_glyph_rune (data, &gb, BEGIN_GLYPHS, 1, | |
| 1425 GLYPH_CACHEL (w, OCT_ESC_GLYPH_INDEX)); | |
| 1426 } | |
| 1427 } | |
| 1428 | |
| 1429 /* We only propagate information if the glyph was partially | |
| 1430 added. */ | |
| 1431 if (add_failed) | |
| 1432 return add_failed; | |
| 1433 | |
| 1434 data->cursor_type = IGNORE_CURSOR; | |
| 1435 | |
| 1436 if (data->ch >= 0x100) | |
| 1437 { | |
| 1438 /* If the character is an extended Mule character, it could have | |
| 3498 | 1439 up to 21 bits. For the moment, we treat it as a seven-digit |
| 428 | 1440 octal number. This is not that pretty, but whatever. */ |
| 1441 data->ch = (7 & (orig_char >> 18)) + '0'; | |
| 1442 ADD_NEXT_OCTAL_RUNE_CHAR; | |
| 1443 | |
| 1444 data->ch = (7 & (orig_char >> 15)) + '0'; | |
| 1445 ADD_NEXT_OCTAL_RUNE_CHAR; | |
| 1446 | |
| 1447 data->ch = (7 & (orig_char >> 12)) + '0'; | |
| 1448 ADD_NEXT_OCTAL_RUNE_CHAR; | |
| 1449 | |
| 1450 data->ch = (7 & (orig_char >> 9)) + '0'; | |
| 1451 ADD_NEXT_OCTAL_RUNE_CHAR; | |
| 1452 } | |
| 1453 | |
| 1454 data->ch = (7 & (orig_char >> 6)) + '0'; | |
| 1455 ADD_NEXT_OCTAL_RUNE_CHAR; | |
| 1456 | |
| 1457 data->ch = (7 & (orig_char >> 3)) + '0'; | |
| 1458 ADD_NEXT_OCTAL_RUNE_CHAR; | |
| 1459 | |
| 1460 data->ch = (7 & orig_char) + '0'; | |
| 1461 ADD_NEXT_OCTAL_RUNE_CHAR; | |
| 1462 | |
| 1463 data->cursor_type = orig_cursor_type; | |
| 819 | 1464 return NULL; |
| 428 | 1465 } |
| 1466 | |
| 1467 #undef ADD_NEXT_OCTAL_RUNE_CHAR | |
| 1468 | |
| 1469 /* Add runes representing a control character to a display block. */ | |
| 1470 | |
| 1471 static prop_block_dynarr * | |
| 1472 add_control_char_runes (pos_data *data, struct buffer *b) | |
| 1473 { | |
| 1474 if (!NILP (b->ctl_arrow)) | |
| 1475 { | |
| 1476 prop_block_dynarr *prop; | |
| 867 | 1477 Ichar orig_char = data->ch; |
| 647 | 1478 int old_cursor_type = data->cursor_type; |
| 428 | 1479 |
| 1480 /* Initialize */ | |
| 1481 prop = NULL; | |
| 1482 | |
| 1483 if (data->start_col) | |
| 1484 data->start_col--; | |
| 1485 | |
| 1486 if (!data->start_col) | |
| 1487 { | |
| 826 | 1488 if (data->byte_start_col_enabled) |
| 428 | 1489 { |
| 1490 prop_block_dynarr *retval; | |
| 1491 | |
| 1492 retval = add_hscroll_rune (data); | |
| 1493 if (retval) | |
| 1494 return retval; | |
| 1495 } | |
| 1496 else | |
| 1497 { | |
| 1498 struct glyph_block gb; | |
| 1499 struct window *w = XWINDOW (data->window); | |
| 1500 | |
| 1501 gb.extent = Qnil; | |
| 1502 gb.glyph = Vcontrol_arrow_glyph; | |
| 1503 | |
| 1504 /* We only propagate information if the glyph was partially | |
| 1505 added. */ | |
| 1506 if (add_glyph_rune (data, &gb, BEGIN_GLYPHS, 1, | |
| 1507 GLYPH_CACHEL (w, CONTROL_GLYPH_INDEX))) | |
| 1508 return ADD_FAILED; | |
| 1509 } | |
| 1510 } | |
| 1511 | |
| 1512 if (orig_char == 0177) | |
| 1513 data->ch = '?'; | |
| 1514 else | |
| 1515 data->ch = orig_char ^ 0100; | |
| 1516 data->cursor_type = IGNORE_CURSOR; | |
| 1517 | |
| 867 | 1518 if (add_ichar_rune (data)) |
| 428 | 1519 { |
| 1520 struct prop_block pb; | |
| 1521 if (!prop) | |
| 1522 prop = Dynarr_new (prop_block); | |
| 1523 | |
| 1524 pb.type = PROP_CHAR; | |
| 1525 pb.data.p_char.ch = data->ch; | |
| 1526 pb.data.p_char.cursor_type = data->cursor_type; | |
| 1527 Dynarr_add (prop, pb); | |
| 1528 } | |
| 1529 | |
| 1530 data->cursor_type = old_cursor_type; | |
| 1531 return prop; | |
| 1532 } | |
| 1533 else | |
| 1534 { | |
| 1535 return add_octal_runes (data); | |
| 1536 } | |
| 1537 } | |
| 1538 | |
| 1539 static prop_block_dynarr * | |
| 1540 add_disp_table_entry_runes_1 (pos_data *data, Lisp_Object entry) | |
| 1541 { | |
| 1542 prop_block_dynarr *prop = NULL; | |
| 1543 | |
| 1544 if (STRINGP (entry)) | |
| 1545 { | |
| 867 | 1546 prop = add_ibyte_string_runes (data, |
| 428 | 1547 XSTRING_DATA (entry), |
| 1548 XSTRING_LENGTH (entry), | |
| 793 | 1549 0, 0); |
| 428 | 1550 } |
| 1551 else if (GLYPHP (entry)) | |
| 1552 { | |
| 1553 if (data->start_col) | |
| 1554 data->start_col--; | |
| 1555 | |
| 826 | 1556 if (!data->start_col && data->byte_start_col_enabled) |
| 428 | 1557 { |
| 1558 prop = add_hscroll_rune (data); | |
| 1559 } | |
| 1560 else | |
| 1561 { | |
| 1562 struct glyph_block gb; | |
| 1563 | |
| 1564 gb.glyph = entry; | |
| 1565 gb.extent = Qnil; | |
| 1566 prop = add_glyph_rune (data, &gb, BEGIN_GLYPHS, 0, 0); | |
| 1567 } | |
| 1568 } | |
| 1569 else if (CHAR_OR_CHAR_INTP (entry)) | |
| 1570 { | |
| 1571 data->ch = XCHAR_OR_CHAR_INT (entry); | |
| 867 | 1572 prop = add_ichar_rune (data); |
| 428 | 1573 } |
| 1574 else if (CONSP (entry)) | |
| 1575 { | |
| 1576 if (EQ (XCAR (entry), Qformat) | |
| 1577 && CONSP (XCDR (entry)) | |
| 1578 && STRINGP (XCAR (XCDR (entry)))) | |
| 1579 { | |
| 1580 Lisp_Object format = XCAR (XCDR (entry)); | |
| 665 | 1581 Bytebpos len = XSTRING_LENGTH (format); |
| 867 | 1582 Ibyte *src = XSTRING_DATA (format), *end = src + len; |
| 2367 | 1583 Ibyte *result = alloca_ibytes (len); |
| 867 | 1584 Ibyte *dst = result; |
| 428 | 1585 |
| 1586 while (src < end) | |
| 1587 { | |
| 867 | 1588 Ichar c = itext_ichar (src); |
| 1589 INC_IBYTEPTR (src); | |
| 428 | 1590 if (c != '%' || src == end) |
| 867 | 1591 dst += set_itext_ichar (dst, c); |
| 428 | 1592 else |
| 1593 { | |
| 867 | 1594 c = itext_ichar (src); |
| 1595 INC_IBYTEPTR (src); | |
| 428 | 1596 switch (c) |
| 1597 { | |
| 1598 /*case 'x': | |
| 1599 dst += long_to_string_base ((char *)dst, data->ch, 16); | |
| 1600 break;*/ | |
| 1601 case '%': | |
| 867 | 1602 dst += set_itext_ichar (dst, '%'); |
| 428 | 1603 break; |
| 442 | 1604 /* #### unimplemented */ |
| 428 | 1605 } |
| 1606 } | |
| 1607 } | |
| 867 | 1608 prop = add_ibyte_string_runes (data, result, dst - result, 0, 0); |
| 428 | 1609 } |
| 1610 } | |
| 1611 | |
| 1612 /* Else blow it off because someone added a bad entry and we don't | |
| 1613 have any safe way of signaling an error. */ | |
| 1614 return prop; | |
| 1615 } | |
| 1616 | |
| 1617 /* Given a display table entry, call the appropriate functions to | |
| 1618 display each element of the entry. */ | |
| 1619 | |
| 1620 static prop_block_dynarr * | |
| 1621 add_disp_table_entry_runes (pos_data *data, Lisp_Object entry) | |
| 1622 { | |
| 1623 prop_block_dynarr *prop = NULL; | |
| 1624 if (VECTORP (entry)) | |
| 1625 { | |
| 440 | 1626 Lisp_Vector *de = XVECTOR (entry); |
| 428 | 1627 EMACS_INT len = vector_length (de); |
| 1628 int elt; | |
| 1629 | |
| 1630 for (elt = 0; elt < len; elt++) | |
| 1631 { | |
| 1632 if (NILP (vector_data (de)[elt])) | |
| 1633 continue; | |
| 1634 else | |
| 1635 prop = add_disp_table_entry_runes_1 (data, vector_data (de)[elt]); | |
| 1636 /* Else blow it off because someone added a bad entry and we | |
| 1637 don't have any safe way of signaling an error. Hey, this | |
| 1638 comment sounds familiar. */ | |
| 1639 | |
| 1640 /* #### Still need to add any remaining elements to the | |
| 4187 | 1641 propagation information. */ |
| 428 | 1642 if (prop) |
| 1643 return prop; | |
| 1644 } | |
| 1645 } | |
| 1646 else | |
| 1647 prop = add_disp_table_entry_runes_1 (data, entry); | |
| 1648 return prop; | |
| 1649 } | |
| 1650 | |
| 1651 /* Add runes which were propagated from the previous line. */ | |
| 1652 | |
| 1653 static prop_block_dynarr * | |
| 1654 add_propagation_runes (prop_block_dynarr **prop, pos_data *data) | |
| 1655 { | |
| 1656 /* #### Remember to handle start_col parameter of data when the rest of | |
| 1657 this is finished. */ | |
| 1658 /* #### Chuck -- I've redone this function a bit. It looked like the | |
| 1659 case of not all the propagation blocks being added was not handled | |
| 1660 well. */ | |
| 1661 /* #### Chuck -- I also think the double indirection of PROP is kind | |
| 1662 of bogus. A cleaner solution is just to check for | |
| 1663 Dynarr_length (prop) > 0. */ | |
| 1664 /* #### This function also doesn't even pay attention to ADD_FAILED! | |
| 1665 This is seriously fucked! Seven ####'s in 130 lines -- is that a | |
| 1666 record? */ | |
| 1667 int elt; | |
| 1668 prop_block_dynarr *add_failed; | |
| 826 | 1669 Bytebpos byte_old_cursor_charpos = data->byte_cursor_charpos; |
| 647 | 1670 int old_cursor_type = data->cursor_type; |
| 428 | 1671 |
| 1672 for (elt = 0; elt < Dynarr_length (*prop); elt++) | |
| 1673 { | |
| 1674 struct prop_block *pb = Dynarr_atp (*prop, elt); | |
| 1675 | |
| 1676 switch (pb->type) | |
| 1677 { | |
| 1678 case PROP_CHAR: | |
| 1679 data->ch = pb->data.p_char.ch; | |
| 826 | 1680 data->byte_cursor_charpos = pb->data.p_char.byte_cursor_charpos; |
| 428 | 1681 data->cursor_type = pb->data.p_char.cursor_type; |
| 867 | 1682 add_failed = add_ichar_rune (data); |
| 428 | 1683 |
| 1684 if (add_failed) | |
| 1685 goto oops_no_more_space; | |
| 1686 break; | |
| 1687 case PROP_STRING: | |
| 1688 if (pb->data.p_string.str) | |
|
5169
6c6d78781d59
cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup
Ben Wing <ben@xemacs.org>
parents:
5157
diff
changeset
|
1689 { |
|
6c6d78781d59
cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup
Ben Wing <ben@xemacs.org>
parents:
5157
diff
changeset
|
1690 xfree (pb->data.p_string.str); |
|
6c6d78781d59
cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup
Ben Wing <ben@xemacs.org>
parents:
5157
diff
changeset
|
1691 pb->data.p_string.str = 0; |
|
6c6d78781d59
cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup
Ben Wing <ben@xemacs.org>
parents:
5157
diff
changeset
|
1692 } |
| 428 | 1693 /* #### bogus bogus -- this doesn't do anything! |
| 867 | 1694 Should probably call add_ibyte_string_runes(), |
| 428 | 1695 once that function is fixed. */ |
| 1696 break; | |
| 1697 case PROP_MINIBUF_PROMPT: | |
| 1698 { | |
| 1699 face_index old_findex = data->findex; | |
| 826 | 1700 Bytebpos byte_old_charpos = data->byte_charpos; |
| 428 | 1701 |
| 1702 data->findex = DEFAULT_INDEX; | |
| 826 | 1703 data->byte_charpos = 0; |
| 428 | 1704 data->cursor_type = NO_CURSOR; |
| 1705 | |
| 1706 while (pb->data.p_string.len > 0) | |
| 1707 { | |
| 867 | 1708 data->ch = itext_ichar (pb->data.p_string.str); |
| 1709 add_failed = add_ichar_rune (data); | |
| 428 | 1710 |
| 1711 if (add_failed) | |
| 1712 { | |
| 1713 data->findex = old_findex; | |
| 826 | 1714 data->byte_charpos = byte_old_charpos; |
| 428 | 1715 goto oops_no_more_space; |
| 1716 } | |
| 1717 else | |
| 1718 { | |
| 1719 /* Complicated equivalent of ptr++, len-- */ | |
| 867 | 1720 Ibyte *oldpos = pb->data.p_string.str; |
| 1721 INC_IBYTEPTR (pb->data.p_string.str); | |
| 428 | 1722 pb->data.p_string.len -= pb->data.p_string.str - oldpos; |
| 1723 } | |
| 1724 } | |
| 1725 | |
| 1726 data->findex = old_findex; | |
| 1727 /* ##### FIXME FIXME FIXME -- Upon successful return from | |
| 826 | 1728 this function, data->byte_charpos is automatically incremented. |
| 428 | 1729 However, we don't want that to happen if we were adding |
| 1730 the minibuffer prompt. */ | |
| 1731 { | |
| 1732 struct buffer *buf = | |
| 1733 XBUFFER (WINDOW_BUFFER (XWINDOW (data->window))); | |
| 1734 /* #### Chuck fix this shit or I'm gonna scream! */ | |
| 826 | 1735 if (byte_old_charpos > BYTE_BUF_BEGV (buf)) |
| 4187 | 1736 data->byte_charpos = prev_bytebpos (buf, byte_old_charpos); |
| 1737 else | |
| 428 | 1738 /* #### is this correct? Does anyone know? |
| 1739 Does anyone care? Is this a cheesy hack or what? */ | |
| 4187 | 1740 data->byte_charpos = BYTE_BUF_BEGV (buf) - 1; |
| 428 | 1741 } |
| 1742 } | |
| 1743 break; | |
| 1744 case PROP_BLANK: | |
| 1745 { | |
| 1746 /* #### I think it's unnecessary and misleading to preserve | |
| 1747 the blank_width, as it implies that the value carries | |
| 1748 over from one rune to the next, which is wrong. */ | |
| 1749 int old_width = data->blank_width; | |
| 1750 face_index old_findex = data->findex; | |
| 1751 | |
| 1752 data->findex = pb->data.p_blank.findex; | |
| 1753 data->blank_width = pb->data.p_blank.width; | |
| 826 | 1754 data->byte_cursor_charpos = 0; |
| 428 | 1755 data->cursor_type = IGNORE_CURSOR; |
| 1756 | |
| 1757 if (data->pixpos + data->blank_width > data->max_pixpos) | |
| 1758 data->blank_width = data->max_pixpos - data->pixpos; | |
| 1759 | |
| 1760 /* We pass a bogus value of char_tab_width. It shouldn't | |
| 4187 | 1761 matter because unless something is really screwed up |
| 1762 this call won't cause that arg to be used. */ | |
| 428 | 1763 add_failed = add_blank_rune (data, XWINDOW (data->window), 0); |
| 1764 | |
| 1765 /* This can happen in the case where we have a tab which | |
| 4187 | 1766 is wider than the window. */ |
| 428 | 1767 if (data->blank_width != pb->data.p_blank.width) |
| 1768 { | |
| 1769 pb->data.p_blank.width -= data->blank_width; | |
| 1770 add_failed = ADD_FAILED; | |
| 1771 } | |
| 1772 | |
| 1773 data->findex = old_findex; | |
| 1774 data->blank_width = old_width; | |
| 1775 | |
| 1776 if (add_failed) | |
| 1777 goto oops_no_more_space; | |
| 1778 } | |
| 1779 break; | |
| 1780 default: | |
| 2500 | 1781 ABORT (); |
| 428 | 1782 } |
| 1783 } | |
| 1784 | |
| 1785 oops_no_more_space: | |
| 1786 | |
| 826 | 1787 data->byte_cursor_charpos = byte_old_cursor_charpos; |
| 428 | 1788 data->cursor_type = old_cursor_type; |
| 1789 if (elt < Dynarr_length (*prop)) | |
| 1790 { | |
| 1791 Dynarr_delete_many (*prop, 0, elt); | |
| 1792 return *prop; | |
| 1793 } | |
| 1794 else | |
| 1795 { | |
| 1796 Dynarr_free (*prop); | |
| 1797 return NULL; | |
| 1798 } | |
| 1799 } | |
| 1800 | |
| 3025 | 1801 /* Add `text' layout glyphs at position POS_TYPE that are contained to |
| 428 | 1802 the display block, but add all other types to the appropriate list |
| 1803 of the display line. They will be added later by different | |
| 1804 routines. */ | |
| 1805 | |
| 1806 static prop_block_dynarr * | |
| 1807 add_glyph_rune (pos_data *data, struct glyph_block *gb, int pos_type, | |
| 1808 int allow_cursor, struct glyph_cachel *cachel) | |
| 1809 { | |
| 1810 struct window *w = XWINDOW (data->window); | |
| 1811 | |
| 440 | 1812 /* If window faces changed, and glyph instance is text, then |
| 1813 glyph sizes might have changed too */ | |
| 1814 invalidate_glyph_geometry_maybe (gb->glyph, w); | |
| 1815 | |
| 442 | 1816 /* This makes sure the glyph is in the cachels. |
| 1817 | |
| 1818 #### We do this to make sure the glyph is in the glyph cachels, | |
| 1819 so that the dirty flag can be reset after redisplay has | |
| 1820 finished. We should do this some other way, maybe by iterating | |
| 1821 over the window cache of subwindows. */ | |
| 1822 get_glyph_cachel_index (w, gb->glyph); | |
| 1823 | |
| 428 | 1824 /* A nil extent indicates a special glyph (ex. truncator). */ |
| 1825 if (NILP (gb->extent) | |
| 1826 || (pos_type == BEGIN_GLYPHS && | |
| 1827 extent_begin_glyph_layout (XEXTENT (gb->extent)) == GL_TEXT) | |
| 1828 || (pos_type == END_GLYPHS && | |
| 442 | 1829 extent_end_glyph_layout (XEXTENT (gb->extent)) == GL_TEXT) |
| 1830 || pos_type == LEFT_GLYPHS || pos_type == RIGHT_GLYPHS) | |
| 428 | 1831 { |
| 1832 struct rune rb; | |
| 1833 int width; | |
| 1834 int xoffset = 0; | |
| 1835 int ascent, descent; | |
| 1836 Lisp_Object baseline; | |
| 1837 Lisp_Object face; | |
| 442 | 1838 Lisp_Object instance; |
| 1839 face_index findex; | |
| 819 | 1840 prop_block_dynarr *retval = 0; |
| 428 | 1841 |
| 1842 if (cachel) | |
| 1843 width = cachel->width; | |
| 1844 else | |
| 438 | 1845 width = glyph_width (gb->glyph, data->window); |
| 428 | 1846 |
| 1847 if (!width) | |
| 1848 return NULL; | |
| 1849 | |
| 1850 if (data->start_col || data->start_col_xoffset) | |
| 1851 { | |
| 1852 int glyph_char_width = width / space_width (w); | |
| 1853 | |
| 1854 /* If we still have not fully scrolled horizontally after | |
| 4187 | 1855 taking into account the width of the glyph, subtract its |
| 1856 width and return. */ | |
| 428 | 1857 if (glyph_char_width < data->start_col) |
| 1858 { | |
| 1859 data->start_col -= glyph_char_width; | |
| 1860 return NULL; | |
| 1861 } | |
| 1862 else if (glyph_char_width == data->start_col) | |
| 1863 width = 0; | |
| 1864 else | |
| 1865 { | |
| 1866 xoffset = space_width (w) * data->start_col; | |
| 1867 width -= xoffset; | |
| 1868 | |
| 1869 /* #### Can this happen? */ | |
| 1870 if (width < 0) | |
| 1871 width = 0; | |
| 1872 } | |
| 1873 | |
| 1874 data->start_col = 0; | |
| 1875 retval = add_hscroll_rune (data); | |
| 1876 | |
| 1877 /* Could be caused by the handling of the hscroll rune. */ | |
| 1878 if (retval != NULL || !width) | |
| 1879 return retval; | |
| 1880 } | |
| 1881 else | |
| 1882 xoffset = 0; | |
| 1883 | |
| 1884 if (data->pixpos + width > data->max_pixpos) | |
| 1885 { | |
| 1886 /* If this is the first object we are attempting to add to | |
| 819 | 1887 the line then we ignore the horizontal_clip threshold. |
| 1888 Otherwise we will loop until the bottom of the window | |
| 1889 continually failing to add this glyph because it is wider | |
| 1890 than the window. We could alternatively just completely | |
| 1891 ignore the glyph and proceed from there but I think that | |
| 1892 this is a better solution. | |
| 4187 | 1893 |
| 819 | 1894 This does, however, create a different problem in that we |
| 1895 can end up adding the object to every single line, never | |
| 1896 getting any further - for instance an extent with a long | |
| 1897 start-glyph that covers multitple following | |
| 1898 characters. */ | |
| 428 | 1899 if (Dynarr_length (data->db->runes) |
| 1900 && data->max_pixpos - data->pixpos < horizontal_clip) | |
| 1901 return ADD_FAILED; | |
| 819 | 1902 else { |
| 1903 struct prop_block pb; | |
| 1904 | |
| 1905 /* We need to account for the width of the end-of-line | |
| 1906 glyph if there is nothing more in the line to display, | |
| 1907 since we will not display it in this instance. It seems | |
| 1908 kind of gross doing it here, but otherwise we have to | |
| 1909 search the runes in create_text_block(). */ | |
| 1910 if (data->ch == '\n') | |
| 1911 data->max_pixpos += data->end_glyph_width; | |
| 428 | 1912 width = data->max_pixpos - data->pixpos; |
| 819 | 1913 /* Add the glyph we are displaying, but clipping, to the |
| 1914 propagation data so that we don't try and do it | |
| 4187 | 1915 again. */ |
| 819 | 1916 retval = Dynarr_new (prop_block); |
| 1917 pb.type = PROP_GLYPH; | |
| 1918 pb.data.p_glyph.glyph = gb->glyph; | |
| 1919 pb.data.p_glyph.width = width; | |
| 1920 Dynarr_add (retval, pb); | |
| 1921 } | |
| 428 | 1922 } |
| 1923 | |
| 1924 if (cachel) | |
| 1925 { | |
| 1926 ascent = cachel->ascent; | |
| 1927 descent = cachel->descent; | |
| 1928 } | |
| 1929 else | |
| 1930 { | |
| 438 | 1931 ascent = glyph_ascent (gb->glyph, data->window); |
| 1932 descent = glyph_descent (gb->glyph, data->window); | |
| 428 | 1933 } |
| 1934 | |
| 1935 baseline = glyph_baseline (gb->glyph, data->window); | |
| 1936 | |
| 819 | 1937 rb.object.dglyph.descent = 0; /* Gets reset lower down, if it is known. */ |
| 1938 | |
| 428 | 1939 if (glyph_contrib_p (gb->glyph, data->window)) |
| 1940 { | |
| 1941 /* A pixmap that has not had a baseline explicitly set. Its | |
| 1942 contribution will be determined later. */ | |
| 1943 if (NILP (baseline)) | |
| 1944 { | |
| 1945 int height = ascent + descent; | |
| 819 | 1946 data->need_baseline_computation = 1; |
| 428 | 1947 data->max_pixmap_height = max (data->max_pixmap_height, height); |
| 1948 } | |
| 1949 | |
| 1950 /* A string so determine contribution normally. */ | |
| 1951 else if (EQ (baseline, Qt)) | |
| 1952 { | |
| 1953 data->new_ascent = max (data->new_ascent, ascent); | |
| 1954 data->new_descent = max (data->new_descent, descent); | |
| 1955 } | |
| 1956 | |
| 1957 /* A pixmap with an explicitly set baseline. We determine the | |
| 1958 contribution here. */ | |
| 1959 else if (INTP (baseline)) | |
| 1960 { | |
| 1961 int height = ascent + descent; | |
| 1962 int pix_ascent, pix_descent; | |
| 1963 | |
| 1964 pix_ascent = height * XINT (baseline) / 100; | |
| 1965 pix_descent = height - pix_ascent; | |
| 1966 | |
| 1967 data->new_ascent = max (data->new_ascent, pix_ascent); | |
| 1968 data->new_descent = max (data->new_descent, pix_descent); | |
| 819 | 1969 data->max_pixmap_height = max (data->max_pixmap_height, height); |
| 4187 | 1970 |
| 819 | 1971 rb.object.dglyph.descent = pix_descent; |
| 428 | 1972 } |
| 1973 | |
| 1974 /* Otherwise something is screwed up. */ | |
| 1975 else | |
| 2500 | 1976 ABORT (); |
| 428 | 1977 } |
| 1978 | |
| 1979 face = glyph_face (gb->glyph, data->window); | |
| 1980 if (NILP (face)) | |
| 442 | 1981 findex = data->findex; |
| 428 | 1982 else |
| 442 | 1983 findex = get_builtin_face_cache_index (w, face); |
| 1984 | |
| 1985 instance = glyph_image_instance (gb->glyph, data->window, | |
| 793 | 1986 ERROR_ME_DEBUG_WARN, 1); |
| 442 | 1987 if (TEXT_IMAGE_INSTANCEP (instance)) |
| 1988 { | |
| 1989 Lisp_Object string = XIMAGE_INSTANCE_TEXT_STRING (instance); | |
| 1990 face_index orig_findex = data->findex; | |
| 826 | 1991 Bytebpos orig_charpos = data->byte_charpos; |
| 1992 Bytebpos orig_start_col_enabled = data->byte_start_col_enabled; | |
| 442 | 1993 |
| 1994 data->findex = findex; | |
| 826 | 1995 data->byte_start_col_enabled = 0; |
| 442 | 1996 if (!allow_cursor) |
| 826 | 1997 data->byte_charpos = 0; |
| 867 | 1998 add_ibyte_string_runes (data, XSTRING_DATA (string), |
| 793 | 1999 XSTRING_LENGTH (string), 0, 1); |
| 442 | 2000 data->findex = orig_findex; |
| 826 | 2001 data->byte_charpos = orig_charpos; |
| 2002 data->byte_start_col_enabled = orig_start_col_enabled; | |
| 819 | 2003 return retval; |
| 442 | 2004 } |
| 2005 | |
| 2006 rb.findex = findex; | |
| 428 | 2007 rb.xpos = data->pixpos; |
| 2008 rb.width = width; | |
| 826 | 2009 rb.charpos = 0; /* glyphs are never "at" anywhere */ |
| 2010 if (data->byte_endpos) | |
| 428 | 2011 /* #### is this necessary at all? */ |
| 665 | 2012 rb.endpos = bytebpos_to_charbpos (XBUFFER (WINDOW_BUFFER (w)), |
| 826 | 2013 data->byte_endpos); |
| 428 | 2014 else |
| 4187 | 2015 rb.endpos = 0; |
| 428 | 2016 rb.type = RUNE_DGLYPH; |
| 2017 rb.object.dglyph.glyph = gb->glyph; | |
| 2018 rb.object.dglyph.extent = gb->extent; | |
| 2019 rb.object.dglyph.xoffset = xoffset; | |
| 819 | 2020 rb.object.dglyph.ascent = ascent; |
| 2021 rb.object.dglyph.yoffset = 0; /* Until we know better, assume that it has | |
| 2022 a normal (textual) baseline. */ | |
| 428 | 2023 |
| 2024 if (allow_cursor) | |
| 2025 { | |
| 826 | 2026 rb.charpos = bytebpos_to_charbpos (XBUFFER (WINDOW_BUFFER (w)), |
| 2027 data->byte_charpos); | |
| 428 | 2028 |
| 2029 if (data->cursor_type == CURSOR_ON) | |
| 2030 { | |
| 826 | 2031 if (data->byte_charpos == data->byte_cursor_charpos) |
| 428 | 2032 { |
| 2033 rb.cursor_type = CURSOR_ON; | |
| 2034 data->cursor_x = Dynarr_length (data->db->runes); | |
| 2035 } | |
| 2036 else | |
| 2037 rb.cursor_type = CURSOR_OFF; | |
| 2038 } | |
| 2039 else if (data->cursor_type == NEXT_CURSOR) | |
| 2040 { | |
| 2041 rb.cursor_type = CURSOR_ON; | |
| 2042 data->cursor_x = Dynarr_length (data->db->runes); | |
| 2043 data->cursor_type = NO_CURSOR; | |
| 2044 } | |
| 2045 else if (data->cursor_type == IGNORE_CURSOR) | |
| 2046 rb.cursor_type = IGNORE_CURSOR; | |
| 2047 else if (data->cursor_type == NO_CURSOR) | |
| 2048 rb.cursor_type = NO_CURSOR; | |
| 2049 else | |
| 2050 rb.cursor_type = CURSOR_OFF; | |
| 2051 } | |
| 2052 else | |
| 2053 rb.cursor_type = CURSOR_OFF; | |
| 2054 | |
| 2055 Dynarr_add (data->db->runes, rb); | |
| 2056 data->pixpos += width; | |
| 2057 | |
| 819 | 2058 return retval; |
| 428 | 2059 } |
| 2060 else | |
| 2061 { | |
| 2062 if (!NILP (glyph_face (gb->glyph, data->window))) | |
| 2063 gb->findex = | |
| 2064 get_builtin_face_cache_index (w, glyph_face (gb->glyph, | |
| 2065 data->window)); | |
| 2066 else | |
| 2067 gb->findex = data->findex; | |
| 2068 | |
| 2069 if (pos_type == BEGIN_GLYPHS) | |
| 2070 { | |
| 2071 if (!data->dl->left_glyphs) | |
| 2072 data->dl->left_glyphs = Dynarr_new (glyph_block); | |
| 2073 Dynarr_add (data->dl->left_glyphs, *gb); | |
| 2074 return NULL; | |
| 2075 } | |
| 2076 else if (pos_type == END_GLYPHS) | |
| 2077 { | |
| 2078 if (!data->dl->right_glyphs) | |
| 2079 data->dl->right_glyphs = Dynarr_new (glyph_block); | |
| 2080 Dynarr_add (data->dl->right_glyphs, *gb); | |
| 2081 return NULL; | |
| 2082 } | |
| 2083 else | |
| 2500 | 2084 ABORT (); /* there are no unknown types */ |
| 428 | 2085 } |
| 2086 | |
| 819 | 2087 return NULL; |
| 428 | 2088 } |
| 2089 | |
| 2090 /* Add all glyphs at position POS_TYPE that are contained in the given | |
| 2091 data. */ | |
| 2092 | |
| 2093 static prop_block_dynarr * | |
| 2094 add_glyph_runes (pos_data *data, int pos_type) | |
| 2095 { | |
| 2096 /* #### This still needs to handle the start_col parameter. Duh, Chuck, | |
| 2097 why didn't you just modify add_glyph_rune in the first place? */ | |
| 2098 int elt; | |
| 2099 glyph_block_dynarr *glyph_arr = (pos_type == BEGIN_GLYPHS | |
| 2100 ? data->ef->begin_glyphs | |
| 2101 : data->ef->end_glyphs); | |
| 2102 prop_block_dynarr *prop; | |
| 2103 | |
| 2104 for (elt = 0; elt < Dynarr_length (glyph_arr); elt++) | |
| 2105 { | |
| 2106 prop = add_glyph_rune (data, Dynarr_atp (glyph_arr, elt), pos_type, 0, | |
| 2107 0); | |
| 2108 | |
| 2109 if (prop) | |
| 2110 { | |
| 2111 /* #### Add some propagation information. */ | |
| 2112 return prop; | |
| 2113 } | |
| 2114 } | |
| 2115 | |
| 2116 Dynarr_reset (glyph_arr); | |
| 2117 | |
| 2118 return NULL; | |
| 2119 } | |
| 2120 | |
| 2121 /* Given a position for a buffer in a window, ensure that the given | |
| 2122 display line DL accurately represents the text on a line starting | |
| 2123 at the given position. | |
| 2124 | |
| 826 | 2125 NOTE NOTE NOTE NOTE: This function works with and returns Bytebpos's. |
| 428 | 2126 You must do appropriate conversion. */ |
| 2127 | |
| 665 | 2128 static Bytebpos |
| 428 | 2129 create_text_block (struct window *w, struct display_line *dl, |
| 826 | 2130 Bytebpos byte_start_pos, prop_block_dynarr **prop, |
| 428 | 2131 int type) |
| 2132 { | |
| 2133 struct frame *f = XFRAME (w->frame); | |
| 2134 struct buffer *b = XBUFFER (w->buffer); | |
| 2135 struct device *d = XDEVICE (f->device); | |
| 2136 | |
| 2137 pos_data data; | |
| 2138 | |
| 2139 /* Don't display anything in the minibuffer if this window is not on | |
| 2140 a selected frame. We consider all other windows to be active | |
| 2141 minibuffers as it simplifies the coding. */ | |
| 2142 int active_minibuffer = (!MINI_WINDOW_P (w) || | |
| 2143 (f == device_selected_frame (d)) || | |
| 2144 is_surrogate_for_selected_frame (f)); | |
| 2145 | |
| 2146 int truncate_win = window_truncation_on (w); | |
| 2147 | |
| 2148 /* If the buffer's value of selective_display is an integer then | |
| 2149 only lines that start with less than selective_display columns of | |
| 2150 space will be displayed. If selective_display is t then all text | |
| 2151 after a ^M is invisible. */ | |
| 2152 int selective = (INTP (b->selective_display) | |
| 2153 ? XINT (b->selective_display) | |
| 434 | 2154 : (!NILP (b->selective_display) ? -1 : 0)); |
| 428 | 2155 |
| 2156 /* The variable ctl-arrow allows the user to specify what characters | |
| 2157 can actually be displayed and which octal should be used for. | |
| 2158 #### This variable should probably have some rethought done to | |
| 2159 it. | |
| 2160 | |
| 2367 | 2161 See also |
| 2162 | |
| 2163 (Info-goto-node "(internals)Future Work -- Display Tables") | |
| 2164 | |
| 2165 */ | |
| 867 | 2166 Ichar printable_min = (CHAR_OR_CHAR_INTP (b->ctl_arrow) |
| 428 | 2167 ? XCHAR_OR_CHAR_INT (b->ctl_arrow) |
| 2168 : ((EQ (b->ctl_arrow, Qt) || EQ (b->ctl_arrow, Qnil)) | |
| 2169 ? 255 : 160)); | |
| 2170 | |
| 2171 Lisp_Object face_dt, window_dt; | |
| 2172 | |
| 2173 /* The text display block for this display line. */ | |
| 2174 struct display_block *db = get_display_block_from_line (dl, TEXT); | |
| 2175 | |
| 2176 /* The first time through the main loop we need to force the glyph | |
| 2177 data to be updated. */ | |
| 2178 int initial = 1; | |
| 2179 | |
| 2180 /* Apparently the new extent_fragment_update returns an end position | |
| 2181 equal to the position passed in if there are no more runs to be | |
| 2182 displayed. */ | |
| 2183 int no_more_frags = 0; | |
| 2184 | |
| 2185 Lisp_Object synch_minibuffers_value = | |
| 2186 symbol_value_in_buffer (Qsynchronize_minibuffers, w->buffer); | |
| 2187 | |
| 2188 dl->used_prop_data = 0; | |
| 2189 dl->num_chars = 0; | |
| 442 | 2190 dl->line_continuation = 0; |
| 428 | 2191 |
| 2192 xzero (data); | |
| 2193 data.ef = extent_fragment_new (w->buffer, f); | |
| 2194 | |
| 2195 /* These values are used by all of the rune addition routines. We add | |
| 2196 them to this structure for ease of passing. */ | |
| 2197 data.d = d; | |
| 793 | 2198 data.window = wrap_window (w); |
| 428 | 2199 data.string = Qnil; |
| 2200 data.db = db; | |
| 2201 data.dl = dl; | |
| 2202 | |
| 826 | 2203 data.byte_charpos = byte_start_pos; |
| 428 | 2204 data.pixpos = dl->bounds.left_in; |
| 2205 data.last_charset = Qunbound; | |
| 2206 data.last_findex = DEFAULT_INDEX; | |
| 2207 data.result_str = Qnil; | |
| 2208 | |
| 2209 /* Set the right boundary adjusting it to take into account any end | |
| 2210 glyph. Save the width of the end glyph for later use. */ | |
| 2211 data.max_pixpos = dl->bounds.right_in; | |
| 2212 if (truncate_win) | |
| 819 | 2213 data.end_glyph_width = GLYPH_CACHEL_WIDTH (w, TRUN_GLYPH_INDEX); |
| 428 | 2214 else |
| 819 | 2215 data.end_glyph_width = GLYPH_CACHEL_WIDTH (w, CONT_GLYPH_INDEX); |
| 2216 data.max_pixpos -= data.end_glyph_width; | |
| 428 | 2217 |
| 2218 if (cursor_in_echo_area && MINI_WINDOW_P (w) && echo_area_active (f)) | |
| 2219 { | |
| 826 | 2220 data.byte_cursor_charpos = BYTE_BUF_ZV (b); |
| 428 | 2221 data.cursor_type = CURSOR_ON; |
| 2222 } | |
| 2223 else if (MINI_WINDOW_P (w) && !active_minibuffer) | |
| 2224 data.cursor_type = NO_CURSOR; | |
| 2225 else if (w == XWINDOW (FRAME_SELECTED_WINDOW (f)) && | |
| 5198 | 2226 EQ (DEVICE_CONSOLE (d), Vselected_console) && |
| 2227 d == XDEVICE (CONSOLE_SELECTED_DEVICE (XCONSOLE (DEVICE_CONSOLE (d))))&& | |
| 2228 f == XFRAME (DEVICE_SELECTED_FRAME (d))) | |
| 428 | 2229 { |
| 826 | 2230 data.byte_cursor_charpos = BYTE_BUF_PT (b); |
| 428 | 2231 data.cursor_type = CURSOR_ON; |
| 2232 } | |
| 2233 else if (w == XWINDOW (FRAME_SELECTED_WINDOW (f))) | |
| 2234 { | |
| 826 | 2235 data.byte_cursor_charpos = byte_marker_position (w->pointm[type]); |
| 428 | 2236 data.cursor_type = CURSOR_ON; |
| 2237 } | |
| 2238 else | |
| 2239 data.cursor_type = NO_CURSOR; | |
| 2240 data.cursor_x = -1; | |
| 2241 | |
| 2242 data.start_col = w->hscroll; | |
| 2243 data.start_col_xoffset = w->left_xoffset; | |
| 826 | 2244 data.byte_start_col_enabled = (w->hscroll ? byte_start_pos : 0); |
| 428 | 2245 data.hscroll_glyph_width_adjust = 0; |
| 2246 | |
| 2247 /* We regenerate the line from the very beginning. */ | |
| 2248 Dynarr_reset (db->runes); | |
| 2249 | |
| 2250 /* Why is this less than or equal and not just less than? If the | |
| 2251 starting position is already equal to the maximum we can't add | |
| 2252 anything else, right? Wrong. We might still have a newline to | |
| 2253 add. A newline can use the room allocated for an end glyph since | |
| 2254 if we add it we know we aren't going to be adding any end | |
| 2255 glyph. */ | |
| 2256 | |
| 2257 /* #### Chuck -- I think this condition should be while (1). | |
| 2258 Otherwise if (e.g.) there is one begin-glyph and one end-glyph | |
| 2259 and the begin-glyph ends exactly at the end of the window, the | |
| 2260 end-glyph and text might not be displayed. while (1) ensures | |
| 2261 that the loop terminates only when either (a) there is | |
| 2262 propagation data or (b) the end-of-line or end-of-buffer is hit. | |
| 2263 | |
| 2264 #### Also I think you need to ensure that the operation | |
| 2265 "add begin glyphs; add end glyphs; add text" is atomic and | |
| 2266 can't get interrupted in the middle. If you run off the end | |
| 2267 of the line during that operation, then you keep accumulating | |
| 2268 propagation data until you're done. Otherwise, if the (e.g.) | |
| 2269 there's a begin glyph at a particular position and attempting | |
| 2270 to display that glyph results in window-end being hit and | |
| 2271 propagation data being generated, then the character at that | |
| 2272 position won't be displayed. | |
| 2273 | |
| 2274 #### See also the comment after the end of this loop, below. | |
| 2275 */ | |
| 2276 while (data.pixpos <= data.max_pixpos | |
| 2277 && (active_minibuffer || !NILP (synch_minibuffers_value))) | |
| 2278 { | |
| 2279 /* #### This check probably should not be necessary. */ | |
| 826 | 2280 if (data.byte_charpos > BYTE_BUF_ZV (b)) |
| 428 | 2281 { |
| 2282 /* #### urk! More of this lossage! */ | |
| 826 | 2283 data.byte_charpos--; |
| 428 | 2284 goto done; |
| 2285 } | |
| 2286 | |
| 2287 /* If selective display was an integer and we aren't working on | |
| 4187 | 2288 a continuation line then find the next line we are actually |
| 2289 supposed to display. */ | |
| 428 | 2290 if (selective > 0 |
| 826 | 2291 && (data.byte_charpos == BYTE_BUF_BEGV (b) |
| 2292 || BUF_FETCH_CHAR (b, prev_bytebpos (b, data.byte_charpos)) == '\n')) | |
| 2293 { | |
| 2294 while (byte_spaces_at_point (b, data.byte_charpos) >= selective) | |
| 428 | 2295 { |
| 826 | 2296 data.byte_charpos = |
| 2297 byte_find_next_newline_no_quit (b, data.byte_charpos, 1); | |
| 2298 if (data.byte_charpos >= BYTE_BUF_ZV (b)) | |
| 428 | 2299 { |
| 826 | 2300 data.byte_charpos = BYTE_BUF_ZV (b); |
| 428 | 2301 goto done; |
| 2302 } | |
| 2303 } | |
| 2304 } | |
| 2305 | |
| 2306 /* Check for face changes. */ | |
| 826 | 2307 if (initial || (!no_more_frags && data.byte_charpos == data.ef->end)) |
| 428 | 2308 { |
| 819 | 2309 Lisp_Object last_glyph = Qnil; |
| 2310 | |
| 2311 /* Deal with glyphs that we have already displayed. The | |
| 2312 theory is that if we end up with a PROP_GLYPH in the | |
| 2313 propagation data then we are clipping the glyph and there | |
| 2314 can be no propagation data before that point. The theory | |
| 2315 works because we always recalculate the extent-fragments | |
| 2316 for propagated data, we never actually propagate the | |
| 2317 fragments that still need to be displayed. */ | |
| 4967 | 2318 if (*prop && Dynarr_begin (*prop)->type == PROP_GLYPH) |
| 2319 { | |
| 2320 last_glyph = Dynarr_begin (*prop)->data.p_glyph.glyph; | |
| 819 | 2321 Dynarr_free (*prop); |
| 2322 *prop = 0; | |
| 2323 } | |
| 428 | 2324 /* Now compute the face and begin/end-glyph information. */ |
| 2325 data.findex = | |
| 665 | 2326 /* Remember that the extent-fragment routines deal in Bytebpos's. */ |
| 826 | 2327 extent_fragment_update (w, data.ef, data.byte_charpos, last_glyph); |
| 428 | 2328 |
| 2329 get_display_tables (w, data.findex, &face_dt, &window_dt); | |
| 2330 | |
| 826 | 2331 if (data.byte_charpos == data.ef->end) |
| 428 | 2332 no_more_frags = 1; |
| 2333 } | |
| 2334 initial = 0; | |
| 2335 | |
| 2336 /* Determine what is next to be displayed. We first handle any | |
| 4187 | 2337 glyphs returned by glyphs_at_charbpos. If there are no glyphs to |
| 2338 display then we determine what to do based on the character at the | |
| 2339 current buffer position. */ | |
| 428 | 2340 |
| 2341 /* If the current position is covered by an invisible extent, do | |
| 4187 | 2342 nothing (except maybe add some ellipses). |
| 428 | 2343 |
| 2344 #### The behavior of begin and end-glyphs at the edge of an | |
| 2345 invisible extent should be investigated further. This is | |
| 2346 fairly low priority though. */ | |
| 2347 if (data.ef->invisible) | |
| 2348 { | |
| 2349 /* #### Chuck, perhaps you could look at this code? I don't | |
| 2350 really know what I'm doing. */ | |
| 2351 if (*prop) | |
| 2352 { | |
| 2353 Dynarr_free (*prop); | |
| 2354 *prop = 0; | |
| 2355 } | |
| 2356 | |
| 2357 /* The extent fragment code only sets this when we should | |
| 2358 really display the ellipses. It makes sure the ellipses | |
| 2359 don't get displayed more than once in a row. */ | |
| 2360 if (data.ef->invisible_ellipses) | |
| 2361 { | |
| 2362 struct glyph_block gb; | |
| 2363 | |
| 2364 data.ef->invisible_ellipses_already_displayed = 1; | |
| 2365 data.ef->invisible_ellipses = 0; | |
| 2366 gb.extent = Qnil; | |
| 2367 gb.glyph = Vinvisible_text_glyph; | |
| 2368 *prop = add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0, | |
| 2369 GLYPH_CACHEL (w, INVIS_GLYPH_INDEX)); | |
| 2370 /* Perhaps they shouldn't propagate if the very next thing | |
| 2371 is to display a newline (for compatibility with | |
| 2372 selective-display-ellipses)? Maybe that's too | |
| 2373 abstruse. */ | |
| 2374 if (*prop) | |
| 2375 goto done; | |
| 2376 } | |
| 2377 | |
| 2378 /* If point is in an invisible region we place it on the | |
| 4187 | 2379 next visible character. */ |
| 428 | 2380 if (data.cursor_type == CURSOR_ON |
| 826 | 2381 && data.byte_charpos == data.byte_cursor_charpos) |
| 428 | 2382 { |
| 2383 data.cursor_type = NEXT_CURSOR; | |
| 2384 } | |
| 2385 | |
| 2386 /* #### What if we we're dealing with a display table? */ | |
| 2387 if (data.start_col) | |
| 2388 data.start_col--; | |
| 2389 | |
| 826 | 2390 if (data.byte_charpos == BYTE_BUF_ZV (b)) |
| 428 | 2391 goto done; |
| 2392 else | |
| 826 | 2393 INC_BYTEBPOS (b, data.byte_charpos); |
| 428 | 2394 } |
| 2395 | |
| 2396 /* If there is propagation data, then it represents the current | |
| 819 | 2397 buffer position being displayed. Add them and advance the |
| 2398 position counter. This might also add the minibuffer | |
| 2399 prompt. */ | |
| 428 | 2400 else if (*prop) |
| 2401 { | |
| 2402 dl->used_prop_data = 1; | |
| 2403 *prop = add_propagation_runes (prop, &data); | |
| 2404 | |
| 2405 if (*prop) | |
| 2406 goto done; /* gee, a really narrow window */ | |
| 826 | 2407 else if (data.byte_charpos == BYTE_BUF_ZV (b)) |
| 428 | 2408 goto done; |
| 826 | 2409 else if (data.byte_charpos < BYTE_BUF_BEGV (b)) |
| 428 | 2410 /* #### urk urk urk! Aborts are not very fun! Fix this please! */ |
| 826 | 2411 data.byte_charpos = BYTE_BUF_BEGV (b); |
| 428 | 2412 else |
| 826 | 2413 INC_BYTEBPOS (b, data.byte_charpos); |
| 428 | 2414 } |
| 2415 | |
| 2416 /* If there are end glyphs, add them to the line. These are | |
| 2417 the end glyphs for the previous run of text. We add them | |
| 2418 here rather than doing them at the end of handling the | |
| 2419 previous run so that glyphs at the beginning and end of | |
| 2420 a line are handled correctly. */ | |
| 819 | 2421 else if (Dynarr_length (data.ef->end_glyphs) > 0 |
| 2422 || Dynarr_length (data.ef->begin_glyphs) > 0) | |
| 2423 { | |
| 2424 glyph_block_dynarr* tmpglyphs = 0; | |
| 2425 /* #### I think this is safe, but could be wrong. */ | |
| 826 | 2426 data.ch = BYTE_BUF_FETCH_CHAR (b, data.byte_charpos); |
| 819 | 2427 |
| 4187 | 2428 if (Dynarr_length (data.ef->end_glyphs) > 0) |
| 819 | 2429 { |
| 2430 *prop = add_glyph_runes (&data, END_GLYPHS); | |
| 2431 tmpglyphs = data.ef->end_glyphs; | |
| 2432 } | |
| 2433 | |
| 2434 /* If there are begin glyphs, add them to the line. */ | |
| 4187 | 2435 if (!*prop && Dynarr_length (data.ef->begin_glyphs) > 0) |
| 819 | 2436 { |
| 2437 *prop = add_glyph_runes (&data, BEGIN_GLYPHS); | |
| 2438 tmpglyphs = data.ef->begin_glyphs; | |
| 2439 } | |
| 2440 | |
| 4187 | 2441 if (*prop) |
| 819 | 2442 { |
| 2443 /* If we just clipped a glyph and we are at the end of a | |
| 2444 line and there are more glyphs to display then do | |
| 2445 appropriate processing to not get a continuation | |
| 2446 glyph. */ | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
2447 if (*prop != ADD_FAILED |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
2448 && Dynarr_begin (*prop)->type == PROP_GLYPH |
| 819 | 2449 && data.ch == '\n') |
| 4187 | 2450 { |
| 819 | 2451 /* If there are no more glyphs then do the normal |
| 4187 | 2452 processing. |
| 819 | 2453 |
| 2454 #### This doesn't actually work if the same glyph is | |
| 2455 present more than once in the block. To solve | |
| 2456 this we would have to carry the index around | |
| 2457 which might be problematic since the fragment is | |
| 2458 recalculated for each line. */ | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
2459 if (EQ (Dynarr_lastp (tmpglyphs)->glyph, |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
2460 Dynarr_begin (*prop)->data.p_glyph.glyph)) |
| 819 | 2461 { |
| 2462 Dynarr_free (*prop); | |
| 2463 *prop = 0; | |
| 2464 } | |
| 2465 else { | |
| 2466 data.blank_width = DEVMETH (d, eol_cursor_width, ()); | |
| 867 | 2467 add_ichar_rune (&data); /* discard prop data. */ |
| 819 | 2468 goto done; |
| 2469 } | |
| 2470 } | |
| 2471 else | |
| 2472 goto done; | |
| 2473 } | |
| 428 | 2474 } |
| 2475 | |
| 2476 /* If at end-of-buffer, we've already processed begin and | |
| 2477 end-glyphs at this point and there's no text to process, | |
| 2478 so we're done. */ | |
| 826 | 2479 else if (data.byte_charpos == BYTE_BUF_ZV (b)) |
| 428 | 2480 goto done; |
| 2481 | |
| 2482 else | |
| 2483 { | |
| 2484 Lisp_Object entry = Qnil; | |
| 2485 /* Get the character at the current buffer position. */ | |
| 826 | 2486 data.ch = BYTE_BUF_FETCH_CHAR (b, data.byte_charpos); |
| 428 | 2487 if (!NILP (face_dt) || !NILP (window_dt)) |
| 2488 entry = display_table_entry (data.ch, face_dt, window_dt); | |
| 2489 | |
| 2490 /* If there is a display table entry for it, hand it off to | |
| 4187 | 2491 add_disp_table_entry_runes and let it worry about it. */ |
| 428 | 2492 if (!NILP (entry) && !EQ (entry, make_char (data.ch))) |
| 2493 { | |
| 2494 *prop = add_disp_table_entry_runes (&data, entry); | |
| 2495 | |
| 2496 if (*prop) | |
| 2497 goto done; | |
| 2498 } | |
| 2499 | |
| 2500 /* Check if we have hit a newline character. If so, add a marker | |
| 4187 | 2501 to the line and end this loop. */ |
| 428 | 2502 else if (data.ch == '\n') |
| 2503 { | |
| 2504 /* We aren't going to be adding an end glyph so give its | |
| 4187 | 2505 space back in order to make sure that the cursor can |
| 2506 fit. */ | |
| 819 | 2507 data.max_pixpos += data.end_glyph_width; |
| 428 | 2508 |
| 2509 if (selective > 0 | |
| 826 | 2510 && (byte_spaces_at_point |
| 2511 (b, next_bytebpos (b, data.byte_charpos)) | |
| 428 | 2512 >= selective)) |
| 2513 { | |
| 2514 if (!NILP (b->selective_display_ellipses)) | |
| 2515 { | |
| 2516 struct glyph_block gb; | |
| 2517 | |
| 2518 gb.extent = Qnil; | |
| 2519 gb.glyph = Vinvisible_text_glyph; | |
| 2520 add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0, | |
| 2521 GLYPH_CACHEL (w, INVIS_GLYPH_INDEX)); | |
| 2522 } | |
| 2523 else | |
| 2524 { | |
| 2525 /* Cheesy, cheesy, cheesy. We mark the end of the | |
| 2526 line with a special "character rune" whose width | |
| 2527 is the EOL cursor width and whose character is | |
| 2528 the non-printing character '\n'. */ | |
| 2529 data.blank_width = DEVMETH (d, eol_cursor_width, ()); | |
| 867 | 2530 *prop = add_ichar_rune (&data); |
| 428 | 2531 } |
| 2532 | |
| 826 | 2533 /* We need to set data.byte_charpos to the start of the |
| 4187 | 2534 next visible region in order to make this line |
| 2535 appear to contain all of the invisible area. | |
| 2536 Otherwise, the line cache won't work | |
| 2537 correctly. */ | |
| 826 | 2538 INC_BYTEBPOS (b, data.byte_charpos); |
| 2539 while (byte_spaces_at_point (b, data.byte_charpos) >= selective) | |
| 428 | 2540 { |
| 826 | 2541 data.byte_charpos = |
| 2542 byte_find_next_newline_no_quit (b, data.byte_charpos, 1); | |
| 2543 if (data.byte_charpos >= BYTE_BUF_ZV (b)) | |
| 428 | 2544 { |
| 826 | 2545 data.byte_charpos = BYTE_BUF_ZV (b); |
| 428 | 2546 break; |
| 2547 } | |
| 2548 } | |
| 826 | 2549 if (BYTE_BUF_FETCH_CHAR |
| 2550 (b, prev_bytebpos (b, data.byte_charpos)) == '\n') | |
| 2551 DEC_BYTEBPOS (b, data.byte_charpos); | |
| 428 | 2552 } |
| 2553 else | |
| 2554 { | |
| 2555 data.blank_width = DEVMETH (d, eol_cursor_width, ()); | |
| 867 | 2556 *prop = add_ichar_rune (&data); |
| 428 | 2557 } |
| 2558 | |
| 2559 goto done; | |
| 2560 } | |
| 2561 | |
| 2562 /* If the current character is ^M, and selective display is | |
| 4187 | 2563 enabled, then add the invisible-text-glyph if |
| 2564 selective-display-ellipses is set. In any case, this | |
| 2565 line is done. */ | |
| 428 | 2566 else if (data.ch == (('M' & 037)) && selective == -1) |
| 2567 { | |
| 826 | 2568 Bytebpos byte_next_charpos; |
| 428 | 2569 |
| 2570 /* Find the buffer position at the end of the line. */ | |
| 826 | 2571 byte_next_charpos = |
| 2572 byte_find_next_newline_no_quit (b, data.byte_charpos, 1); | |
| 2573 if (BYTE_BUF_FETCH_CHAR (b, prev_bytebpos (b, byte_next_charpos)) | |
| 428 | 2574 == '\n') |
| 826 | 2575 DEC_BYTEBPOS (b, byte_next_charpos); |
| 428 | 2576 |
| 2577 /* If the cursor is somewhere in the elided text make | |
| 4187 | 2578 sure that the cursor gets drawn appropriately. */ |
| 428 | 2579 if (data.cursor_type == CURSOR_ON |
| 826 | 2580 && (data.byte_cursor_charpos >= data.byte_charpos && |
| 2581 data.byte_cursor_charpos < byte_next_charpos)) | |
| 428 | 2582 { |
| 2583 data.cursor_type = NEXT_CURSOR; | |
| 2584 } | |
| 2585 | |
| 2586 /* We won't be adding a truncation or continuation glyph | |
| 4187 | 2587 so give up the room allocated for them. */ |
| 819 | 2588 data.max_pixpos += data.end_glyph_width; |
| 428 | 2589 |
| 2590 if (!NILP (b->selective_display_ellipses)) | |
| 2591 { | |
| 2592 /* We don't propagate anything from the invisible | |
| 4187 | 2593 text glyph if it fails to fit. This is |
| 2594 intentional. */ | |
| 428 | 2595 struct glyph_block gb; |
| 2596 | |
| 2597 gb.extent = Qnil; | |
| 2598 gb.glyph = Vinvisible_text_glyph; | |
| 2599 add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 1, | |
| 2600 GLYPH_CACHEL (w, INVIS_GLYPH_INDEX)); | |
| 2601 } | |
| 2602 | |
| 2603 /* Set the buffer position to the end of the line. We | |
| 4187 | 2604 need to do this before potentially adding a newline |
| 2605 so that the cursor flag will get set correctly (if | |
| 2606 needed). */ | |
| 826 | 2607 data.byte_charpos = byte_next_charpos; |
| 428 | 2608 |
| 2609 if (NILP (b->selective_display_ellipses) | |
| 826 | 2610 || data.byte_cursor_charpos == byte_next_charpos) |
| 428 | 2611 { |
| 2612 /* We have to at least add a newline character so | |
| 4187 | 2613 that the cursor shows up properly. */ |
| 428 | 2614 data.ch = '\n'; |
| 2615 data.blank_width = DEVMETH (d, eol_cursor_width, ()); | |
| 2616 data.findex = DEFAULT_INDEX; | |
| 2617 data.start_col = 0; | |
| 2618 data.start_col_xoffset = 0; | |
| 826 | 2619 data.byte_start_col_enabled = 0; |
| 428 | 2620 |
| 867 | 2621 add_ichar_rune (&data); |
| 428 | 2622 } |
| 2623 | |
| 2624 /* This had better be a newline but doing it this way | |
| 4187 | 2625 we'll see obvious incorrect results if it isn't. No |
| 2626 need to abort here. */ | |
| 826 | 2627 data.ch = BYTE_BUF_FETCH_CHAR (b, data.byte_charpos); |
| 428 | 2628 |
| 2629 goto done; | |
| 2630 } | |
| 2631 | |
| 2632 /* If the current character is considered to be printable, then | |
| 4187 | 2633 just add it. */ |
| 428 | 2634 else if (data.ch >= printable_min) |
| 2635 { | |
| 867 | 2636 *prop = add_ichar_rune (&data); |
| 428 | 2637 if (*prop) |
| 2638 goto done; | |
| 2639 } | |
| 2640 | |
| 2641 /* If the current character is a tab, determine the next tab | |
| 4187 | 2642 starting position and add a blank rune which extends from the |
| 2643 current pixel position to that starting position. */ | |
| 428 | 2644 else if (data.ch == '\t') |
| 2645 { | |
| 2646 int tab_start_pixpos = data.pixpos; | |
| 2647 int next_tab_start; | |
| 2648 int char_tab_width; | |
| 2649 int prop_width = 0; | |
| 2650 | |
| 2651 if (data.start_col > 1) | |
| 434 | 2652 tab_start_pixpos -= (space_width (w) * (data.start_col - 1)) |
| 428 | 2653 + data.start_col_xoffset; |
| 2654 | |
| 2655 next_tab_start = | |
| 2656 next_tab_position (w, tab_start_pixpos, | |
| 2657 dl->bounds.left_in + | |
| 2658 data.hscroll_glyph_width_adjust); | |
| 2659 if (next_tab_start > data.max_pixpos) | |
| 2660 { | |
| 2661 prop_width = next_tab_start - data.max_pixpos; | |
| 2662 next_tab_start = data.max_pixpos; | |
| 2663 } | |
| 2664 data.blank_width = next_tab_start - data.pixpos; | |
| 2665 char_tab_width = | |
| 2666 (next_tab_start - tab_start_pixpos) / space_width (w); | |
| 2667 | |
| 2668 *prop = add_blank_rune (&data, w, char_tab_width); | |
| 2669 | |
| 2670 /* add_blank_rune is only supposed to be called with | |
| 4187 | 2671 sizes guaranteed to fit in the available space. */ |
| 428 | 2672 assert (!(*prop)); |
| 2673 | |
| 2674 if (prop_width) | |
| 2675 { | |
| 2676 struct prop_block pb; | |
| 2677 *prop = Dynarr_new (prop_block); | |
| 2678 | |
| 2679 pb.type = PROP_BLANK; | |
| 2680 pb.data.p_blank.width = prop_width; | |
| 2681 pb.data.p_blank.findex = data.findex; | |
| 2682 Dynarr_add (*prop, pb); | |
| 2683 | |
| 2684 goto done; | |
| 2685 } | |
| 2686 } | |
| 2687 | |
| 2688 /* If character is a control character, pass it off to | |
| 4187 | 2689 add_control_char_runes. |
| 428 | 2690 |
| 2691 The is_*() routines have undefined results on | |
| 2692 arguments outside of the range [-1, 255]. (This | |
| 2693 often bites people who carelessly use `char' instead | |
| 2694 of `unsigned char'.) | |
| 2695 */ | |
| 867 | 2696 else if (data.ch < 0x100 && iscntrl ((Ibyte) data.ch)) |
| 428 | 2697 { |
| 2698 *prop = add_control_char_runes (&data, b); | |
| 2699 | |
| 2700 if (*prop) | |
| 2701 goto done; | |
| 2702 } | |
| 2703 | |
| 2704 /* If the character is above the ASCII range and we have not | |
| 4187 | 2705 already handled it, then print it as an octal number. */ |
| 428 | 2706 else if (data.ch >= 0200) |
| 2707 { | |
| 2708 *prop = add_octal_runes (&data); | |
| 2709 | |
| 2710 if (*prop) | |
| 2711 goto done; | |
| 2712 } | |
| 2713 | |
| 2714 /* Assume the current character is considered to be printable, | |
| 4187 | 2715 then just add it. */ |
| 428 | 2716 else |
| 2717 { | |
| 867 | 2718 *prop = add_ichar_rune (&data); |
| 428 | 2719 if (*prop) |
| 2720 goto done; | |
| 2721 } | |
| 2722 | |
| 826 | 2723 INC_BYTEBPOS (b, data.byte_charpos); |
| 428 | 2724 } |
| 2725 } | |
| 2726 | |
| 2727 done: | |
| 2728 | |
| 2729 /* Determine the starting point of the next line if we did not hit the | |
| 2730 end of the buffer. */ | |
| 826 | 2731 if (data.byte_charpos < BYTE_BUF_ZV (b) |
| 428 | 2732 && (active_minibuffer || !NILP (synch_minibuffers_value))) |
| 2733 { | |
| 2734 /* #### This check is not correct. If the line terminated | |
| 2735 due to a begin-glyph or end-glyph hitting window-end, then | |
| 826 | 2736 data.ch will not point to the character at data.byte_charpos. If |
| 428 | 2737 you make the two changes mentioned at the top of this loop, |
| 2738 you should be able to say '(if (*prop))'. That should also | |
| 826 | 2739 make it possible to eliminate the data.byte_charpos < BYTE_BUF_ZV (b) |
| 428 | 2740 check. */ |
| 2741 | |
| 2742 /* The common case is that the line ended because we hit a newline. | |
| 4187 | 2743 In that case, the next character is just the next buffer |
| 2744 position. */ | |
| 428 | 2745 if (data.ch == '\n') |
| 2746 { | |
| 2747 /* If data.start_col_enabled is still true, then the window is | |
| 4187 | 2748 scrolled far enough so that nothing on this line is visible. |
| 2749 We need to stick a truncation glyph at the beginning of the | |
| 2750 line in that case unless the line is completely blank. */ | |
| 826 | 2751 if (data.byte_start_col_enabled) |
| 428 | 2752 { |
| 2753 if (data.cursor_type == CURSOR_ON) | |
| 2754 { | |
| 826 | 2755 if (data.byte_cursor_charpos >= byte_start_pos |
| 2756 && data.byte_cursor_charpos <= data.byte_charpos) | |
| 2757 data.byte_cursor_charpos = data.byte_charpos; | |
| 428 | 2758 } |
| 2759 data.findex = DEFAULT_INDEX; | |
| 2760 data.start_col = 0; | |
| 826 | 2761 data.byte_start_col_enabled = 0; |
| 2762 | |
| 2763 if (data.byte_charpos != byte_start_pos) | |
| 428 | 2764 { |
| 2765 struct glyph_block gb; | |
| 2766 | |
| 2767 gb.extent = Qnil; | |
| 2768 gb.glyph = Vhscroll_glyph; | |
| 2769 add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0, | |
| 2770 GLYPH_CACHEL (w, HSCROLL_GLYPH_INDEX)); | |
| 2771 } | |
| 2772 else | |
| 2773 { | |
| 2774 /* This duplicates code down below to add a newline to | |
| 4187 | 2775 the end of an otherwise empty line.*/ |
| 428 | 2776 data.ch = '\n'; |
| 2777 data.blank_width = DEVMETH (d, eol_cursor_width, ()); | |
| 2778 | |
| 867 | 2779 add_ichar_rune (&data); |
| 428 | 2780 } |
| 2781 } | |
| 2782 | |
| 826 | 2783 INC_BYTEBPOS (b, data.byte_charpos); |
| 428 | 2784 } |
| 2785 | |
| 2786 /* Otherwise we have a buffer line which cannot fit on one display | |
| 4187 | 2787 line. */ |
| 428 | 2788 else |
| 2789 { | |
| 2790 struct glyph_block gb; | |
| 2791 struct glyph_cachel *cachel; | |
| 2792 | |
| 2793 /* If the line is to be truncated then we actually have to look | |
| 4187 | 2794 for the next newline. We also add the end-of-line glyph which |
| 2795 we know will fit because we adjusted the right border before | |
| 2796 we starting laying out the line. */ | |
| 819 | 2797 data.max_pixpos += data.end_glyph_width; |
| 428 | 2798 data.findex = DEFAULT_INDEX; |
| 2799 gb.extent = Qnil; | |
| 2800 | |
| 2801 if (truncate_win) | |
| 2802 { | |
| 826 | 2803 Bytebpos byte_pos; |
| 428 | 2804 |
| 2805 /* Now find the start of the next line. */ | |
| 826 | 2806 byte_pos = byte_find_next_newline_no_quit (b, data.byte_charpos, 1); |
| 428 | 2807 |
| 2808 /* If the cursor is past the truncation line then we | |
| 4187 | 2809 make it appear on the truncation glyph. If we've hit |
| 2810 the end of the buffer then we also make the cursor | |
| 2811 appear unless eob is immediately preceded by a | |
| 2812 newline. In that case the cursor should actually | |
| 2813 appear on the next line. */ | |
| 428 | 2814 if (data.cursor_type == CURSOR_ON |
| 826 | 2815 && data.byte_cursor_charpos >= data.byte_charpos |
| 2816 && (data.byte_cursor_charpos < byte_pos || | |
| 2817 (byte_pos == BYTE_BUF_ZV (b) | |
| 2818 && (byte_pos == BYTE_BUF_BEGV (b) | |
| 2819 || (BYTE_BUF_FETCH_CHAR (b, prev_bytebpos (b, byte_pos)) | |
| 428 | 2820 != '\n'))))) |
| 826 | 2821 data.byte_cursor_charpos = byte_pos; |
| 428 | 2822 else |
| 2823 data.cursor_type = NO_CURSOR; | |
| 2824 | |
| 826 | 2825 data.byte_charpos = byte_pos; |
| 428 | 2826 gb.glyph = Vtruncation_glyph; |
| 2827 cachel = GLYPH_CACHEL (w, TRUN_GLYPH_INDEX); | |
| 2828 } | |
| 2829 else | |
| 2830 { | |
| 2831 /* The cursor can never be on the continuation glyph. */ | |
| 2832 data.cursor_type = NO_CURSOR; | |
| 2833 | |
| 826 | 2834 /* data.byte_charpos is already at the start of the next line. */ |
| 428 | 2835 |
| 442 | 2836 dl->line_continuation = 1; |
| 428 | 2837 gb.glyph = Vcontinuation_glyph; |
| 2838 cachel = GLYPH_CACHEL (w, CONT_GLYPH_INDEX); | |
| 2839 } | |
| 2840 | |
| 442 | 2841 add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0, cachel); |
| 428 | 2842 |
| 826 | 2843 if (truncate_win && data.byte_charpos == BYTE_BUF_ZV (b) |
| 2844 && BYTE_BUF_FETCH_CHAR (b, prev_bytebpos (b, BYTE_BUF_ZV (b))) != '\n') | |
| 428 | 2845 /* #### Damn this losing shit. */ |
| 826 | 2846 data.byte_charpos++; |
| 428 | 2847 } |
| 2848 } | |
| 2849 else if ((active_minibuffer || !NILP (synch_minibuffers_value)) | |
| 826 | 2850 && (!echo_area_active (f) || data.byte_charpos == BYTE_BUF_ZV (b))) |
| 428 | 2851 { |
| 2852 /* We need to add a marker to the end of the line since there is no | |
| 4187 | 2853 newline character in order for the cursor to get drawn. We label |
| 2854 it as a newline so that it gets handled correctly by the | |
| 2855 whitespace routines below. */ | |
| 428 | 2856 |
| 2857 data.ch = '\n'; | |
| 2858 data.blank_width = DEVMETH (d, eol_cursor_width, ()); | |
| 2859 data.findex = DEFAULT_INDEX; | |
| 2860 data.start_col = 0; | |
| 2861 data.start_col_xoffset = 0; | |
| 826 | 2862 data.byte_start_col_enabled = 0; |
| 428 | 2863 |
| 2864 data.max_pixpos += data.blank_width; | |
| 867 | 2865 add_ichar_rune (&data); |
| 428 | 2866 data.max_pixpos -= data.blank_width; |
| 2867 | |
| 2868 /* #### urk! Chuck, this shit is bad news. Going around | |
| 2869 manipulating invalid positions is guaranteed to result in | |
| 2870 trouble sooner or later. */ | |
| 826 | 2871 data.byte_charpos = BYTE_BUF_ZV (b) + 1; |
| 428 | 2872 } |
| 2873 | |
| 2874 /* Calculate left whitespace boundary. */ | |
| 2875 { | |
| 2876 int elt = 0; | |
| 2877 | |
| 2878 /* Whitespace past a newline is considered right whitespace. */ | |
| 2879 while (elt < Dynarr_length (db->runes)) | |
| 2880 { | |
| 2881 struct rune *rb = Dynarr_atp (db->runes, elt); | |
| 2882 | |
| 2883 if ((rb->type == RUNE_CHAR && rb->object.chr.ch == ' ') | |
| 2884 || rb->type == RUNE_BLANK) | |
| 2885 { | |
| 2886 dl->bounds.left_white += rb->width; | |
| 2887 elt++; | |
| 2888 } | |
| 2889 else | |
| 2890 elt = Dynarr_length (db->runes); | |
| 2891 } | |
| 2892 } | |
| 2893 | |
| 2894 /* Calculate right whitespace boundary. */ | |
| 2895 { | |
| 2896 int elt = Dynarr_length (db->runes) - 1; | |
| 2897 int done = 0; | |
| 2898 | |
| 2899 while (!done && elt >= 0) | |
| 2900 { | |
| 2901 struct rune *rb = Dynarr_atp (db->runes, elt); | |
| 2902 | |
| 2903 if (!(rb->type == RUNE_CHAR && rb->object.chr.ch < 0x100 | |
| 2904 && isspace (rb->object.chr.ch)) | |
| 2905 && !rb->type == RUNE_BLANK) | |
| 2906 { | |
| 2907 dl->bounds.right_white = rb->xpos + rb->width; | |
| 2908 done = 1; | |
| 2909 } | |
| 2910 | |
| 2911 elt--; | |
| 2912 | |
| 2913 } | |
| 2914 | |
| 2915 /* The line is blank so everything is considered to be right | |
| 2916 whitespace. */ | |
| 2917 if (!done) | |
| 2918 dl->bounds.right_white = dl->bounds.left_in; | |
| 2919 } | |
| 2920 | |
| 2921 /* Set the display blocks bounds. */ | |
| 2922 db->start_pos = dl->bounds.left_in; | |
| 2923 if (Dynarr_length (db->runes)) | |
| 2924 { | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
2925 struct rune *rb = Dynarr_lastp (db->runes); |
| 428 | 2926 |
| 2927 db->end_pos = rb->xpos + rb->width; | |
| 2928 } | |
| 2929 else | |
| 2930 db->end_pos = dl->bounds.right_white; | |
| 2931 | |
| 819 | 2932 calculate_baseline (&data); |
| 428 | 2933 |
| 2934 dl->ascent = data.new_ascent; | |
| 2935 dl->descent = data.new_descent; | |
| 2936 | |
| 2937 { | |
| 2938 unsigned short ascent = (unsigned short) XINT (w->minimum_line_ascent); | |
| 2939 | |
| 2940 if (dl->ascent < ascent) | |
| 2941 dl->ascent = ascent; | |
| 2942 } | |
| 2943 { | |
| 2944 unsigned short descent = (unsigned short) XINT (w->minimum_line_descent); | |
| 2945 | |
| 2946 if (dl->descent < descent) | |
| 2947 dl->descent = descent; | |
| 2948 } | |
| 2949 | |
| 819 | 2950 calculate_yoffset (dl, db); |
| 2951 | |
| 428 | 2952 dl->cursor_elt = data.cursor_x; |
| 2953 /* #### lossage lossage lossage! Fix this shit! */ | |
| 826 | 2954 if (data.byte_charpos > BYTE_BUF_ZV (b)) |
| 2955 dl->end_charpos = BUF_ZV (b); | |
| 428 | 2956 else |
| 826 | 2957 dl->end_charpos = bytebpos_to_charbpos (b, data.byte_charpos) - 1; |
| 428 | 2958 if (truncate_win) |
| 826 | 2959 data.dl->num_chars = column_at_point (b, dl->end_charpos, 0); |
| 428 | 2960 else |
| 2961 /* This doesn't correctly take into account tabs and control | |
| 2962 characters but if the window isn't being truncated then this | |
| 2963 value isn't going to end up being used anyhow. */ | |
| 826 | 2964 data.dl->num_chars = dl->end_charpos - dl->charpos; |
| 428 | 2965 |
| 2966 /* #### handle horizontally scrolled line with text none of which | |
| 2967 was actually laid out. */ | |
| 2968 | |
| 2969 /* #### handle any remainder of overlay arrow */ | |
| 2970 | |
| 2971 if (*prop == ADD_FAILED) | |
| 2972 *prop = NULL; | |
| 2973 | |
| 2974 if (truncate_win && *prop) | |
| 2975 { | |
| 2976 Dynarr_free (*prop); | |
| 2977 *prop = NULL; | |
| 2978 } | |
| 2979 | |
| 2980 extent_fragment_delete (data.ef); | |
| 2981 | |
| 2982 /* #### If we started at EOB, then make sure we return a value past | |
| 2983 it so that regenerate_window will exit properly. This is bogus. | |
| 2984 The main loop should get fixed so that it isn't necessary to call | |
| 2985 this function if we are already at EOB. */ | |
| 2986 | |
| 826 | 2987 if (data.byte_charpos == BYTE_BUF_ZV (b) && byte_start_pos == BYTE_BUF_ZV (b)) |
| 2988 return data.byte_charpos + 1; /* Yuck! */ | |
| 428 | 2989 else |
| 826 | 2990 return data.byte_charpos; |
| 428 | 2991 } |
| 2992 | |
| 2993 /* Display the overlay arrow at the beginning of the given line. */ | |
| 2994 | |
| 2995 static int | |
| 2996 create_overlay_glyph_block (struct window *w, struct display_line *dl) | |
| 2997 { | |
| 2998 struct frame *f = XFRAME (w->frame); | |
| 2999 struct device *d = XDEVICE (f->device); | |
| 3000 pos_data data; | |
| 3001 | |
| 3002 /* If Voverlay_arrow_string isn't valid then just fail silently. */ | |
| 3003 if (!STRINGP (Voverlay_arrow_string) && !GLYPHP (Voverlay_arrow_string)) | |
| 3004 return 0; | |
| 3005 | |
| 3006 xzero (data); | |
| 3007 data.ef = NULL; | |
| 3008 data.d = d; | |
| 793 | 3009 data.window = wrap_window (w); |
| 428 | 3010 data.db = get_display_block_from_line (dl, OVERWRITE); |
| 3011 data.dl = dl; | |
| 3012 data.pixpos = dl->bounds.left_in; | |
| 3013 data.max_pixpos = dl->bounds.right_in; | |
| 3014 data.cursor_type = NO_CURSOR; | |
| 3015 data.cursor_x = -1; | |
| 3016 data.findex = DEFAULT_INDEX; | |
| 3017 data.last_charset = Qunbound; | |
| 3018 data.last_findex = DEFAULT_INDEX; | |
| 3019 data.result_str = Qnil; | |
| 3020 data.string = Qnil; | |
| 3021 | |
| 3022 Dynarr_reset (data.db->runes); | |
| 3023 | |
| 3024 if (STRINGP (Voverlay_arrow_string)) | |
| 3025 { | |
| 867 | 3026 add_ibyte_string_runes |
| 428 | 3027 (&data, |
| 3028 XSTRING_DATA (Voverlay_arrow_string), | |
| 3029 XSTRING_LENGTH (Voverlay_arrow_string), | |
| 793 | 3030 1, 0); |
| 428 | 3031 } |
| 3032 else if (GLYPHP (Voverlay_arrow_string)) | |
| 3033 { | |
| 3034 struct glyph_block gb; | |
| 3035 | |
| 3036 gb.glyph = Voverlay_arrow_string; | |
| 3037 gb.extent = Qnil; | |
| 3038 add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0, 0); | |
| 3039 } | |
| 4187 | 3040 |
| 428 | 3041 if (data.max_pixmap_height) |
| 3042 { | |
| 3043 int height = data.new_ascent + data.new_descent; | |
| 3044 int pix_ascent, pix_descent; | |
| 4187 | 3045 |
| 428 | 3046 pix_descent = data.max_pixmap_height * data.new_descent / height; |
| 3047 pix_ascent = data.max_pixmap_height - pix_descent; | |
| 819 | 3048 calculate_baseline (&data); |
| 428 | 3049 |
| 3050 data.new_ascent = max (data.new_ascent, pix_ascent); | |
| 3051 data.new_descent = max (data.new_descent, pix_descent); | |
| 3052 } | |
| 3053 | |
| 3054 dl->ascent = data.new_ascent; | |
| 3055 dl->descent = data.new_descent; | |
| 3056 | |
| 3057 data.db->start_pos = dl->bounds.left_in; | |
| 3058 data.db->end_pos = data.pixpos; | |
| 3059 | |
| 819 | 3060 calculate_yoffset (dl, data.db); |
| 3061 | |
| 428 | 3062 return data.pixpos - dl->bounds.left_in; |
| 3063 } | |
| 3064 | |
| 3065 /* Add a type of glyph to a margin display block. */ | |
| 3066 | |
| 3067 static int | |
| 3068 add_margin_runes (struct display_line *dl, struct display_block *db, int start, | |
| 3069 int count, enum glyph_layout layout, int side, Lisp_Object window) | |
| 3070 { | |
| 3071 glyph_block_dynarr *gbd = (side == LEFT_GLYPHS | |
| 3072 ? dl->left_glyphs | |
| 3073 : dl->right_glyphs); | |
| 3074 int elt, end; | |
| 3075 int reverse; | |
| 442 | 3076 struct window *w = XWINDOW (window); |
| 3077 struct frame *f = XFRAME (w->frame); | |
| 3078 struct device *d = XDEVICE (f->device); | |
| 3079 pos_data data; | |
| 3080 | |
| 3081 xzero (data); | |
| 3082 data.d = d; | |
| 3083 data.window = window; | |
| 3084 data.db = db; | |
| 3085 data.dl = dl; | |
| 3086 data.pixpos = start; | |
| 3087 data.cursor_type = NO_CURSOR; | |
| 3088 data.cursor_x = -1; | |
| 3089 data.last_charset = Qunbound; | |
| 3090 data.last_findex = DEFAULT_INDEX; | |
| 3091 data.result_str = Qnil; | |
| 3092 data.string = Qnil; | |
| 3093 data.new_ascent = dl->ascent; | |
| 3094 data.new_descent = dl->descent; | |
| 428 | 3095 |
| 3096 if ((layout == GL_WHITESPACE && side == LEFT_GLYPHS) | |
| 3097 || (layout == GL_INSIDE_MARGIN && side == RIGHT_GLYPHS)) | |
| 3098 { | |
| 3099 reverse = 1; | |
| 3100 elt = Dynarr_length (gbd) - 1; | |
| 3101 end = 0; | |
| 3102 } | |
| 3103 else | |
| 3104 { | |
| 3105 reverse = 0; | |
| 3106 elt = 0; | |
| 3107 end = Dynarr_length (gbd); | |
| 3108 } | |
| 3109 | |
| 3110 while (count && ((!reverse && elt < end) || (reverse && elt >= end))) | |
| 3111 { | |
| 3112 struct glyph_block *gb = Dynarr_atp (gbd, elt); | |
| 3113 | |
| 3114 if (NILP (gb->extent)) | |
| 2500 | 3115 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3116 |
| 3117 if (gb->active && | |
| 3118 ((side == LEFT_GLYPHS && | |
| 3119 extent_begin_glyph_layout (XEXTENT (gb->extent)) == layout) | |
| 3120 || (side == RIGHT_GLYPHS && | |
| 3121 extent_end_glyph_layout (XEXTENT (gb->extent)) == layout))) | |
| 3122 { | |
| 442 | 3123 data.findex = gb->findex; |
| 3124 data.max_pixpos = data.pixpos + gb->width; | |
| 3125 add_glyph_rune (&data, gb, side, 0, NULL); | |
| 428 | 3126 count--; |
| 3127 gb->active = 0; | |
| 3128 } | |
| 3129 | |
| 3130 (reverse ? elt-- : elt++); | |
| 3131 } | |
| 3132 | |
| 819 | 3133 calculate_baseline (&data); |
| 442 | 3134 |
| 3135 dl->ascent = data.new_ascent; | |
| 3136 dl->descent = data.new_descent; | |
| 3137 | |
| 819 | 3138 calculate_yoffset (dl, data.db); |
| 3139 | |
| 442 | 3140 return data.pixpos; |
| 428 | 3141 } |
| 3142 | |
| 3143 /* Add a blank to a margin display block. */ | |
| 3144 | |
| 3145 static void | |
| 2286 | 3146 add_margin_blank (struct display_line *UNUSED (dl), struct display_block *db, |
| 428 | 3147 struct window *w, int xpos, int width, int side) |
| 3148 { | |
| 3149 struct rune rb; | |
| 3150 | |
| 3151 rb.findex = (side == LEFT_GLYPHS | |
| 3152 ? get_builtin_face_cache_index (w, Vleft_margin_face) | |
| 3153 : get_builtin_face_cache_index (w, Vright_margin_face)); | |
| 3154 rb.xpos = xpos; | |
| 3155 rb.width = width; | |
| 826 | 3156 rb.charpos = -1; |
| 428 | 3157 rb.endpos = 0; |
| 3158 rb.type = RUNE_BLANK; | |
| 3159 rb.cursor_type = CURSOR_OFF; | |
| 3160 | |
| 3161 Dynarr_add (db->runes, rb); | |
| 3162 } | |
| 3163 | |
| 3164 /* Display glyphs in the left outside margin, left inside margin and | |
| 3165 left whitespace area. */ | |
| 3166 | |
| 3167 static void | |
| 3168 create_left_glyph_block (struct window *w, struct display_line *dl, | |
| 3169 int overlay_width) | |
| 3170 { | |
| 3171 Lisp_Object window; | |
| 3172 | |
| 3173 int use_overflow = (NILP (w->use_left_overflow) ? 0 : 1); | |
| 3174 int elt, end_xpos; | |
| 3175 int out_end, in_out_start, in_in_end, white_out_start, white_in_start; | |
| 3176 int out_cnt, in_out_cnt, in_in_cnt, white_out_cnt, white_in_cnt; | |
| 3177 int left_in_start = dl->bounds.left_in; | |
| 3178 int left_in_end = dl->bounds.left_in + overlay_width; | |
| 3179 | |
| 3180 struct display_block *odb, *idb; | |
| 3181 | |
| 793 | 3182 window = wrap_window (w); |
| 428 | 3183 |
| 3184 /* We have to add the glyphs to the line in the order outside, | |
| 3185 inside, whitespace. However the precedence dictates that we | |
| 3186 determine how many will fit in the reverse order. */ | |
| 3187 | |
| 3188 /* Determine how many whitespace glyphs we can display and where | |
| 3189 they should start. */ | |
| 3190 white_in_start = dl->bounds.left_white; | |
| 3191 white_out_start = left_in_start; | |
| 3192 white_out_cnt = white_in_cnt = 0; | |
| 3193 elt = 0; | |
| 3194 | |
| 3195 while (elt < Dynarr_length (dl->left_glyphs)) | |
| 3196 { | |
| 3197 struct glyph_block *gb = Dynarr_atp (dl->left_glyphs, elt); | |
| 3198 | |
| 3199 if (NILP (gb->extent)) | |
| 2500 | 3200 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3201 |
| 3202 if (extent_begin_glyph_layout (XEXTENT (gb->extent)) == GL_WHITESPACE) | |
| 3203 { | |
| 3204 int width; | |
| 3205 | |
| 438 | 3206 width = glyph_width (gb->glyph, window); |
| 428 | 3207 |
| 3208 if (white_in_start - width >= left_in_end) | |
| 3209 { | |
| 3210 white_in_cnt++; | |
| 3211 white_in_start -= width; | |
| 3212 gb->width = width; | |
| 3213 gb->active = 1; | |
| 3214 } | |
| 3215 else if (use_overflow | |
| 3216 && (white_out_start - width > dl->bounds.left_out)) | |
| 3217 { | |
| 3218 white_out_cnt++; | |
| 3219 white_out_start -= width; | |
| 3220 gb->width = width; | |
| 3221 gb->active = 1; | |
| 3222 } | |
| 3223 else | |
| 3224 gb->active = 0; | |
| 3225 } | |
| 3226 | |
| 3227 elt++; | |
| 3228 } | |
| 3229 | |
| 3230 /* Determine how many inside margin glyphs we can display and where | |
| 3231 they should start. The inside margin glyphs get whatever space | |
| 3232 is left after the whitespace glyphs have been displayed. These | |
| 3233 are tricky to calculate since if we decide to use the overflow | |
| 3234 area we basically have to start over. So for these we build up a | |
| 3235 list of just the inside margin glyphs and manipulate it to | |
| 3236 determine the needed info. */ | |
| 3237 { | |
| 3238 glyph_block_dynarr *ib; | |
| 3239 int avail_in, avail_out; | |
| 3240 int done = 0; | |
| 3241 int marker = 0; | |
| 3242 int used_in, used_out; | |
| 3243 | |
| 3244 elt = 0; | |
| 3245 used_in = used_out = 0; | |
| 3246 ib = Dynarr_new (glyph_block); | |
| 3247 while (elt < Dynarr_length (dl->left_glyphs)) | |
| 3248 { | |
| 3249 struct glyph_block *gb = Dynarr_atp (dl->left_glyphs, elt); | |
| 3250 | |
| 3251 if (NILP (gb->extent)) | |
| 2500 | 3252 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3253 |
| 3254 if (extent_begin_glyph_layout (XEXTENT (gb->extent)) == | |
| 3255 GL_INSIDE_MARGIN) | |
| 3256 { | |
| 438 | 3257 gb->width = glyph_width (gb->glyph, window); |
| 428 | 3258 used_in += gb->width; |
| 3259 Dynarr_add (ib, *gb); | |
| 3260 } | |
| 3261 | |
| 3262 elt++; | |
| 3263 } | |
| 3264 | |
| 3265 if (white_out_cnt) | |
| 3266 avail_in = 0; | |
| 3267 else | |
| 3268 { | |
| 3269 avail_in = white_in_start - left_in_end; | |
| 3270 if (avail_in < 0) | |
| 3271 avail_in = 0; | |
| 3272 } | |
| 3273 | |
| 3274 if (!use_overflow) | |
| 3275 avail_out = 0; | |
| 3276 else | |
| 3277 avail_out = white_out_start - dl->bounds.left_out; | |
| 3278 | |
| 3279 marker = 0; | |
| 3280 while (!done && marker < Dynarr_length (ib)) | |
| 3281 { | |
| 3282 int width = Dynarr_atp (ib, marker)->width; | |
| 3283 | |
| 3284 /* If everything now fits in the available inside margin | |
| 4187 | 3285 space, we're done. */ |
| 428 | 3286 if (used_in <= avail_in) |
| 3287 done = 1; | |
| 3288 else | |
| 3289 { | |
| 3290 /* Otherwise see if we have room to move a glyph to the | |
| 4187 | 3291 outside. */ |
| 428 | 3292 if (used_out + width <= avail_out) |
| 3293 { | |
| 3294 used_out += width; | |
| 3295 used_in -= width; | |
| 3296 } | |
| 3297 else | |
| 3298 done = 1; | |
| 3299 } | |
| 3300 | |
| 3301 if (!done) | |
| 3302 marker++; | |
| 3303 } | |
| 3304 | |
| 3305 /* At this point we now know that everything from marker on goes in | |
| 3306 the inside margin and everything before it goes in the outside | |
| 3307 margin. The stuff going into the outside margin is guaranteed | |
| 3308 to fit, but we may have to trim some stuff from the inside. */ | |
| 3309 | |
| 3310 in_in_end = left_in_end; | |
| 3311 in_out_start = white_out_start; | |
| 3312 in_out_cnt = in_in_cnt = 0; | |
| 3313 | |
| 3314 Dynarr_free (ib); | |
| 3315 elt = 0; | |
| 3316 while (elt < Dynarr_length (dl->left_glyphs)) | |
| 3317 { | |
| 3318 struct glyph_block *gb = Dynarr_atp (dl->left_glyphs, elt); | |
| 3319 | |
| 3320 if (NILP (gb->extent)) | |
| 2500 | 3321 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3322 |
| 3323 if (extent_begin_glyph_layout (XEXTENT (gb->extent)) == | |
| 3324 GL_INSIDE_MARGIN) | |
| 3325 { | |
| 438 | 3326 int width = glyph_width (gb->glyph, window); |
| 428 | 3327 |
| 3328 if (used_out) | |
| 3329 { | |
| 3330 in_out_cnt++; | |
| 3331 in_out_start -= width; | |
| 3332 gb->width = width; | |
| 3333 gb->active = 1; | |
| 3334 used_out -= width; | |
| 3335 } | |
| 3336 else if (in_in_end + width < white_in_start) | |
| 3337 { | |
| 3338 in_in_cnt++; | |
| 3339 in_in_end += width; | |
| 3340 gb->width = width; | |
| 3341 gb->active = 1; | |
| 3342 } | |
| 3343 else | |
| 3344 gb->active = 0; | |
| 3345 } | |
| 3346 | |
| 3347 elt++; | |
| 3348 } | |
| 3349 } | |
| 3350 | |
| 3351 /* Determine how many outside margin glyphs we can display. They | |
| 3352 always start at the left outside margin and can only use the | |
| 3353 outside margin space. */ | |
| 3354 out_end = dl->bounds.left_out; | |
| 3355 out_cnt = 0; | |
| 3356 elt = 0; | |
| 3357 | |
| 3358 while (elt < Dynarr_length (dl->left_glyphs)) | |
| 3359 { | |
| 3360 struct glyph_block *gb = Dynarr_atp (dl->left_glyphs, elt); | |
| 3361 | |
| 3362 if (NILP (gb->extent)) | |
| 2500 | 3363 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3364 |
| 3365 if (extent_begin_glyph_layout (XEXTENT (gb->extent)) == | |
| 3366 GL_OUTSIDE_MARGIN) | |
| 3367 { | |
| 438 | 3368 int width = glyph_width (gb->glyph, window); |
| 428 | 3369 |
| 3370 if (out_end + width <= in_out_start) | |
| 3371 { | |
| 3372 out_cnt++; | |
| 3373 out_end += width; | |
| 3374 gb->width = width; | |
| 3375 gb->active = 1; | |
| 3376 } | |
| 3377 else | |
| 3378 gb->active = 0; | |
| 3379 } | |
| 3380 | |
| 3381 elt++; | |
| 3382 } | |
| 3383 | |
| 3384 /* Now that we know where everything goes, we add the glyphs as | |
| 3385 runes to the appropriate display blocks. */ | |
| 3386 if (out_cnt || in_out_cnt || white_out_cnt) | |
| 3387 { | |
| 3388 odb = get_display_block_from_line (dl, LEFT_OUTSIDE_MARGIN); | |
| 3389 odb->start_pos = dl->bounds.left_out; | |
| 3390 /* #### We should stop adding a blank to account for the space | |
| 4187 | 3391 between the end of the glyphs and the margin and instead set |
| 3392 this accordingly. */ | |
| 428 | 3393 odb->end_pos = dl->bounds.left_in; |
| 3394 Dynarr_reset (odb->runes); | |
| 3395 } | |
| 3396 else | |
| 3397 odb = 0; | |
| 3398 | |
| 3399 if (in_in_cnt || white_in_cnt) | |
| 3400 { | |
| 3401 idb = get_display_block_from_line (dl, LEFT_INSIDE_MARGIN); | |
| 3402 idb->start_pos = dl->bounds.left_in; | |
| 3403 /* #### See above comment for odb->end_pos */ | |
| 3404 idb->end_pos = dl->bounds.left_white; | |
| 3405 Dynarr_reset (idb->runes); | |
| 3406 } | |
| 3407 else | |
| 3408 idb = 0; | |
| 3409 | |
| 3410 /* First add the outside margin glyphs. */ | |
| 3411 if (out_cnt) | |
| 3412 end_xpos = add_margin_runes (dl, odb, dl->bounds.left_out, out_cnt, | |
| 3413 GL_OUTSIDE_MARGIN, LEFT_GLYPHS, window); | |
| 3414 else | |
| 3415 end_xpos = dl->bounds.left_out; | |
| 3416 | |
| 3417 /* There may be blank space between the outside margin glyphs and | |
| 3418 the inside margin glyphs. If so, add a blank. */ | |
| 3419 if (in_out_cnt && (in_out_start - end_xpos)) | |
| 3420 { | |
| 3421 add_margin_blank (dl, odb, w, end_xpos, in_out_start - end_xpos, | |
| 3422 LEFT_GLYPHS); | |
| 3423 } | |
| 3424 | |
| 3425 /* Next add the inside margin glyphs which are actually in the | |
| 3426 outside margin. */ | |
| 3427 if (in_out_cnt) | |
| 3428 { | |
| 3429 end_xpos = add_margin_runes (dl, odb, in_out_start, in_out_cnt, | |
| 3430 GL_INSIDE_MARGIN, LEFT_GLYPHS, window); | |
| 3431 } | |
| 3432 | |
| 3433 /* If we didn't add any inside margin glyphs to the outside margin, | |
| 3434 but are adding whitespace glyphs, then we need to add a blank | |
| 3435 here. */ | |
| 3436 if (!in_out_cnt && white_out_cnt && (white_out_start - end_xpos)) | |
| 3437 { | |
| 3438 add_margin_blank (dl, odb, w, end_xpos, white_out_start - end_xpos, | |
| 3439 LEFT_GLYPHS); | |
| 3440 } | |
| 3441 | |
| 3442 /* Next add the whitespace margin glyphs which are actually in the | |
| 3443 outside margin. */ | |
| 3444 if (white_out_cnt) | |
| 3445 { | |
| 3446 end_xpos = add_margin_runes (dl, odb, white_out_start, white_out_cnt, | |
| 3447 GL_WHITESPACE, LEFT_GLYPHS, window); | |
| 3448 } | |
| 3449 | |
| 3450 /* We take care of clearing between the end of the glyphs and the | |
| 3451 start of the inside margin for lines which have glyphs. */ | |
| 3452 if (odb && (left_in_start - end_xpos)) | |
| 3453 { | |
| 3454 add_margin_blank (dl, odb, w, end_xpos, left_in_start - end_xpos, | |
| 3455 LEFT_GLYPHS); | |
| 3456 } | |
| 3457 | |
| 3458 /* Next add the inside margin glyphs which are actually in the | |
| 3459 inside margin. */ | |
| 3460 if (in_in_cnt) | |
| 3461 { | |
| 3462 end_xpos = add_margin_runes (dl, idb, left_in_end, in_in_cnt, | |
| 3463 GL_INSIDE_MARGIN, LEFT_GLYPHS, window); | |
| 3464 } | |
| 3465 else | |
| 3466 end_xpos = left_in_end; | |
| 3467 | |
| 3468 /* Make sure that the area between the end of the inside margin | |
| 3469 glyphs and the whitespace glyphs is cleared. */ | |
| 3470 if (idb && (white_in_start - end_xpos > 0)) | |
| 3471 { | |
| 3472 add_margin_blank (dl, idb, w, end_xpos, white_in_start - end_xpos, | |
| 3473 LEFT_GLYPHS); | |
| 3474 } | |
| 3475 | |
| 3476 /* Next add the whitespace margin glyphs which are actually in the | |
| 3477 inside margin. */ | |
| 3478 if (white_in_cnt) | |
| 3479 { | |
| 3480 add_margin_runes (dl, idb, white_in_start, white_in_cnt, GL_WHITESPACE, | |
| 3481 LEFT_GLYPHS, window); | |
| 3482 } | |
| 3483 | |
| 3484 /* Whitespace glyphs always end right next to the text block so | |
| 3485 there is nothing we have to make sure is cleared after them. */ | |
| 3486 } | |
| 3487 | |
| 3488 /* Display glyphs in the right outside margin, right inside margin and | |
| 3489 right whitespace area. */ | |
| 3490 | |
| 3491 static void | |
| 3492 create_right_glyph_block (struct window *w, struct display_line *dl) | |
| 3493 { | |
| 3494 Lisp_Object window; | |
| 3495 | |
| 3496 int use_overflow = (NILP (w->use_right_overflow) ? 0 : 1); | |
| 3497 int elt, end_xpos; | |
| 3498 int out_start, in_out_end, in_in_start, white_out_end, white_in_end; | |
| 3499 int out_cnt, in_out_cnt, in_in_cnt, white_out_cnt, white_in_cnt; | |
| 3500 | |
| 3501 struct display_block *odb, *idb; | |
| 3502 | |
| 793 | 3503 window = wrap_window (w); |
| 428 | 3504 |
| 3505 /* We have to add the glyphs to the line in the order outside, | |
| 3506 inside, whitespace. However the precedence dictates that we | |
| 3507 determine how many will fit in the reverse order. */ | |
| 3508 | |
| 3509 /* Determine how many whitespace glyphs we can display and where | |
| 3510 they should start. */ | |
| 3511 white_in_end = dl->bounds.right_white; | |
| 3512 white_out_end = dl->bounds.right_in; | |
| 3513 white_out_cnt = white_in_cnt = 0; | |
| 3514 elt = 0; | |
| 3515 | |
| 3516 while (elt < Dynarr_length (dl->right_glyphs)) | |
| 3517 { | |
| 3518 struct glyph_block *gb = Dynarr_atp (dl->right_glyphs, elt); | |
| 3519 | |
| 3520 if (NILP (gb->extent)) | |
| 2500 | 3521 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3522 |
| 3523 if (extent_end_glyph_layout (XEXTENT (gb->extent)) == GL_WHITESPACE) | |
| 3524 { | |
| 438 | 3525 int width = glyph_width (gb->glyph, window); |
| 428 | 3526 |
| 3527 if (white_in_end + width <= dl->bounds.right_in) | |
| 3528 { | |
| 3529 white_in_cnt++; | |
| 3530 white_in_end += width; | |
| 3531 gb->width = width; | |
| 3532 gb->active = 1; | |
| 3533 } | |
| 3534 else if (use_overflow | |
| 3535 && (white_out_end + width <= dl->bounds.right_out)) | |
| 3536 { | |
| 3537 white_out_cnt++; | |
| 3538 white_out_end += width; | |
| 3539 gb->width = width; | |
| 3540 gb->active = 1; | |
| 3541 } | |
| 3542 else | |
| 3543 gb->active = 0; | |
| 3544 } | |
| 3545 | |
| 3546 elt++; | |
| 3547 } | |
| 3548 | |
| 3549 /* Determine how many inside margin glyphs we can display and where | |
| 3550 they should start. The inside margin glyphs get whatever space | |
| 3551 is left after the whitespace glyphs have been displayed. These | |
| 3552 are tricky to calculate since if we decide to use the overflow | |
| 3553 area we basically have to start over. So for these we build up a | |
| 3554 list of just the inside margin glyphs and manipulate it to | |
| 3555 determine the needed info. */ | |
| 3556 { | |
| 3557 glyph_block_dynarr *ib; | |
| 3558 int avail_in, avail_out; | |
| 3559 int done = 0; | |
| 3560 int marker = 0; | |
| 3561 int used_in, used_out; | |
| 3562 | |
| 3563 elt = 0; | |
| 3564 used_in = used_out = 0; | |
| 3565 ib = Dynarr_new (glyph_block); | |
| 3566 while (elt < Dynarr_length (dl->right_glyphs)) | |
| 3567 { | |
| 3568 struct glyph_block *gb = Dynarr_atp (dl->right_glyphs, elt); | |
| 3569 | |
| 3570 if (NILP (gb->extent)) | |
| 2500 | 3571 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3572 |
| 3573 if (extent_end_glyph_layout (XEXTENT (gb->extent)) == GL_INSIDE_MARGIN) | |
| 3574 { | |
| 438 | 3575 gb->width = glyph_width (gb->glyph, window); |
| 428 | 3576 used_in += gb->width; |
| 3577 Dynarr_add (ib, *gb); | |
| 3578 } | |
| 3579 | |
| 3580 elt++; | |
| 3581 } | |
| 3582 | |
| 3583 if (white_out_cnt) | |
| 3584 avail_in = 0; | |
| 3585 else | |
| 3586 avail_in = dl->bounds.right_in - white_in_end; | |
| 3587 | |
| 3588 if (!use_overflow) | |
| 3589 avail_out = 0; | |
| 3590 else | |
| 3591 avail_out = dl->bounds.right_out - white_out_end; | |
| 3592 | |
| 3593 marker = 0; | |
| 3594 while (!done && marker < Dynarr_length (ib)) | |
| 3595 { | |
| 3596 int width = Dynarr_atp (ib, marker)->width; | |
| 3597 | |
| 3598 /* If everything now fits in the available inside margin | |
| 4187 | 3599 space, we're done. */ |
| 428 | 3600 if (used_in <= avail_in) |
| 3601 done = 1; | |
| 3602 else | |
| 3603 { | |
| 3604 /* Otherwise see if we have room to move a glyph to the | |
| 4187 | 3605 outside. */ |
| 428 | 3606 if (used_out + width <= avail_out) |
| 3607 { | |
| 3608 used_out += width; | |
| 3609 used_in -= width; | |
| 3610 } | |
| 3611 else | |
| 3612 done = 1; | |
| 3613 } | |
| 3614 | |
| 3615 if (!done) | |
| 3616 marker++; | |
| 3617 } | |
| 3618 | |
| 3619 /* At this point we now know that everything from marker on goes in | |
| 3620 the inside margin and everything before it goes in the outside | |
| 3621 margin. The stuff going into the outside margin is guaranteed | |
| 3622 to fit, but we may have to trim some stuff from the inside. */ | |
| 3623 | |
| 3624 in_in_start = dl->bounds.right_in; | |
| 3625 in_out_end = dl->bounds.right_in; | |
| 3626 in_out_cnt = in_in_cnt = 0; | |
| 3627 | |
| 3628 Dynarr_free (ib); | |
| 3629 elt = 0; | |
| 3630 while (elt < Dynarr_length (dl->right_glyphs)) | |
| 3631 { | |
| 3632 struct glyph_block *gb = Dynarr_atp (dl->right_glyphs, elt); | |
| 3633 | |
| 3634 if (NILP (gb->extent)) | |
| 2500 | 3635 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3636 |
| 3637 if (extent_end_glyph_layout (XEXTENT (gb->extent)) == GL_INSIDE_MARGIN) | |
| 3638 { | |
| 438 | 3639 int width = glyph_width (gb->glyph, window); |
| 428 | 3640 |
| 3641 if (used_out) | |
| 3642 { | |
| 3643 in_out_cnt++; | |
| 3644 in_out_end += width; | |
| 3645 gb->width = width; | |
| 3646 gb->active = 1; | |
| 3647 used_out -= width; | |
| 3648 } | |
| 3649 else if (in_in_start - width >= white_in_end) | |
| 3650 { | |
| 3651 in_in_cnt++; | |
| 3652 in_in_start -= width; | |
| 3653 gb->width = width; | |
| 3654 gb->active = 1; | |
| 3655 } | |
| 3656 else | |
| 3657 gb->active = 0; | |
| 3658 } | |
| 3659 | |
| 3660 elt++; | |
| 3661 } | |
| 3662 } | |
| 3663 | |
| 3664 /* Determine how many outside margin glyphs we can display. They | |
| 3665 always start at the right outside margin and can only use the | |
| 3666 outside margin space. */ | |
| 3667 out_start = dl->bounds.right_out; | |
| 3668 out_cnt = 0; | |
| 3669 elt = 0; | |
| 3670 | |
| 3671 while (elt < Dynarr_length (dl->right_glyphs)) | |
| 3672 { | |
| 3673 struct glyph_block *gb = Dynarr_atp (dl->right_glyphs, elt); | |
| 3674 | |
| 3675 if (NILP (gb->extent)) | |
| 2500 | 3676 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3677 |
| 3678 if (extent_end_glyph_layout (XEXTENT (gb->extent)) == GL_OUTSIDE_MARGIN) | |
| 3679 { | |
| 438 | 3680 int width = glyph_width (gb->glyph, window); |
| 428 | 3681 |
| 3682 if (out_start - width >= in_out_end) | |
| 3683 { | |
| 3684 out_cnt++; | |
| 3685 out_start -= width; | |
| 3686 gb->width = width; | |
| 3687 gb->active = 1; | |
| 3688 } | |
| 3689 else | |
| 3690 gb->active = 0; | |
| 3691 } | |
| 3692 | |
| 3693 elt++; | |
| 3694 } | |
| 3695 | |
| 3696 /* Now that we now where everything goes, we add the glyphs as runes | |
| 3697 to the appropriate display blocks. */ | |
| 3698 if (out_cnt || in_out_cnt || white_out_cnt) | |
| 3699 { | |
| 3700 odb = get_display_block_from_line (dl, RIGHT_OUTSIDE_MARGIN); | |
| 3701 /* #### See comments before odb->start_pos init in | |
| 4187 | 3702 create_left_glyph_block */ |
| 428 | 3703 odb->start_pos = dl->bounds.right_in; |
| 3704 odb->end_pos = dl->bounds.right_out; | |
| 3705 Dynarr_reset (odb->runes); | |
| 3706 } | |
| 3707 else | |
| 3708 odb = 0; | |
| 3709 | |
| 3710 if (in_in_cnt || white_in_cnt) | |
| 3711 { | |
| 3712 idb = get_display_block_from_line (dl, RIGHT_INSIDE_MARGIN); | |
| 3713 idb->start_pos = dl->bounds.right_white; | |
| 3714 /* #### See comments before odb->start_pos init in | |
| 4187 | 3715 create_left_glyph_block */ |
| 428 | 3716 idb->end_pos = dl->bounds.right_in; |
| 3717 Dynarr_reset (idb->runes); | |
| 3718 } | |
| 3719 else | |
| 3720 idb = 0; | |
| 3721 | |
| 3722 /* First add the whitespace margin glyphs which are actually in the | |
| 3723 inside margin. */ | |
| 3724 if (white_in_cnt) | |
| 3725 { | |
| 3726 end_xpos = add_margin_runes (dl, idb, dl->bounds.right_white, | |
| 3727 white_in_cnt, GL_WHITESPACE, RIGHT_GLYPHS, | |
| 3728 window); | |
| 3729 } | |
| 3730 else | |
| 3731 end_xpos = dl->bounds.right_white; | |
| 3732 | |
| 3733 /* Make sure that the area between the end of the whitespace glyphs | |
| 3734 and the inside margin glyphs is cleared. */ | |
| 3735 if (in_in_cnt && (in_in_start - end_xpos)) | |
| 3736 { | |
| 3737 add_margin_blank (dl, idb, w, end_xpos, in_in_start - end_xpos, | |
| 3738 RIGHT_GLYPHS); | |
| 3739 } | |
| 3740 | |
| 3741 /* Next add the inside margin glyphs which are actually in the | |
| 3742 inside margin. */ | |
| 3743 if (in_in_cnt) | |
| 3744 { | |
| 3745 end_xpos = add_margin_runes (dl, idb, in_in_start, in_in_cnt, | |
| 3746 GL_INSIDE_MARGIN, RIGHT_GLYPHS, window); | |
| 3747 } | |
| 3748 | |
| 3749 /* If we didn't add any inside margin glyphs then make sure the rest | |
| 3750 of the inside margin area gets cleared. */ | |
| 3751 if (idb && (dl->bounds.right_in - end_xpos)) | |
| 3752 { | |
| 3753 add_margin_blank (dl, idb, w, end_xpos, dl->bounds.right_in - end_xpos, | |
| 3754 RIGHT_GLYPHS); | |
| 3755 } | |
| 3756 | |
| 3757 /* Next add any whitespace glyphs in the outside margin. */ | |
| 3758 if (white_out_cnt) | |
| 3759 { | |
| 3760 end_xpos = add_margin_runes (dl, odb, dl->bounds.right_in, white_out_cnt, | |
| 3761 GL_WHITESPACE, RIGHT_GLYPHS, window); | |
| 3762 } | |
| 3763 else | |
| 3764 end_xpos = dl->bounds.right_in; | |
| 3765 | |
| 3766 /* Next add any inside margin glyphs in the outside margin. */ | |
| 3767 if (in_out_cnt) | |
| 3768 { | |
| 3769 end_xpos = add_margin_runes (dl, odb, end_xpos, in_out_cnt, | |
| 3770 GL_INSIDE_MARGIN, RIGHT_GLYPHS, window); | |
| 3771 } | |
| 3772 | |
| 3773 /* There may be space between any whitespace or inside margin glyphs | |
| 3774 in the outside margin and the actual outside margin glyphs. */ | |
| 3775 if (odb && (out_start - end_xpos)) | |
| 3776 { | |
| 3777 add_margin_blank (dl, odb, w, end_xpos, out_start - end_xpos, | |
| 3778 RIGHT_GLYPHS); | |
| 3779 } | |
| 3780 | |
| 3781 /* Finally, add the outside margin glyphs. */ | |
| 3782 if (out_cnt) | |
| 3783 { | |
| 3784 add_margin_runes (dl, odb, out_start, out_cnt, GL_OUTSIDE_MARGIN, | |
| 3785 RIGHT_GLYPHS, window); | |
| 3786 } | |
| 3787 } | |
| 3788 | |
| 3789 | |
| 3790 /***************************************************************************/ | |
| 3791 /* */ | |
| 3792 /* modeline routines */ | |
| 3793 /* */ | |
| 3794 /***************************************************************************/ | |
| 3795 | |
| 438 | 3796 /* This function is also used in frame.c by `generate_title_string' */ |
| 3797 void | |
| 3798 generate_formatted_string_db (Lisp_Object format_str, Lisp_Object result_str, | |
| 4187 | 3799 struct window *w, struct display_line *dl, |
| 3800 struct display_block *db, face_index findex, | |
| 3801 int min_pixpos, int max_pixpos, int type) | |
| 438 | 3802 { |
| 3803 struct frame *f = XFRAME (w->frame); | |
| 3804 struct device *d = XDEVICE (f->device); | |
| 3805 | |
| 3806 pos_data data; | |
| 3807 int c_pixpos; | |
| 3808 Charcount offset = 0; | |
| 3809 | |
| 3810 xzero (data); | |
| 3811 data.d = d; | |
| 3812 data.db = db; | |
| 3813 data.dl = dl; | |
| 3814 data.findex = findex; | |
| 3815 data.pixpos = min_pixpos; | |
| 3816 data.max_pixpos = max_pixpos; | |
| 3817 data.cursor_type = NO_CURSOR; | |
| 3818 data.last_charset = Qunbound; | |
| 3819 data.last_findex = DEFAULT_INDEX; | |
| 3820 data.result_str = result_str; | |
| 3821 data.is_modeline = 1; | |
| 3822 data.string = Qnil; | |
| 793 | 3823 data.window = wrap_window (w); |
| 438 | 3824 |
| 3825 Dynarr_reset (formatted_string_extent_dynarr); | |
| 3826 Dynarr_reset (formatted_string_extent_start_dynarr); | |
| 3827 Dynarr_reset (formatted_string_extent_end_dynarr); | |
| 3828 | |
| 3829 /* result_str is nil when we're building a frame or icon title. Otherwise, | |
| 3830 we're building a modeline, so the offset starts at the modeline | |
| 442 | 3831 horizontal scrolling amount */ |
| 438 | 3832 if (! NILP (result_str)) |
| 3833 offset = w->modeline_hscroll; | |
| 3834 generate_fstring_runes (w, &data, 0, 0, -1, format_str, 0, | |
| 4187 | 3835 max_pixpos - min_pixpos, findex, type, &offset, |
| 438 | 3836 Qnil); |
| 3837 | |
| 3838 if (Dynarr_length (db->runes)) | |
| 3839 { | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
3840 struct rune *rb = Dynarr_lastp (db->runes); |
| 438 | 3841 c_pixpos = rb->xpos + rb->width; |
| 3842 } | |
| 3843 else | |
| 3844 c_pixpos = min_pixpos; | |
| 3845 | |
| 3846 /* If we don't reach the right side of the window, add a blank rune | |
| 3847 to make up the difference. This usually only occurs if the | |
| 3848 modeline face is using a proportional width font or a fixed width | |
| 3849 font of a different size from the default face font. */ | |
| 3850 | |
| 3851 if (c_pixpos < max_pixpos) | |
| 3852 { | |
| 3853 data.pixpos = c_pixpos; | |
| 3854 data.blank_width = max_pixpos - data.pixpos; | |
| 3855 | |
| 3856 add_blank_rune (&data, NULL, 0); | |
| 3857 } | |
| 3858 | |
| 3859 /* Now create the result string and frob the extents into it. */ | |
| 3860 if (!NILP (result_str)) | |
| 3861 { | |
| 3862 int elt; | |
| 3863 Bytecount len; | |
| 867 | 3864 Ibyte *strdata; |
| 438 | 3865 struct buffer *buf = XBUFFER (WINDOW_BUFFER (w)); |
| 3866 | |
| 442 | 3867 in_modeline_generation = 1; |
| 3868 | |
| 771 | 3869 sledgehammer_check_ascii_begin (result_str); |
| 438 | 3870 detach_all_extents (result_str); |
| 793 | 3871 resize_string (result_str, -1, |
| 4187 | 3872 data.bytepos - XSTRING_LENGTH (result_str)); |
| 438 | 3873 |
| 3874 strdata = XSTRING_DATA (result_str); | |
| 3875 | |
| 3876 for (elt = 0, len = 0; elt < Dynarr_length (db->runes); elt++) | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
3877 { |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
3878 if (Dynarr_atp (db->runes, elt)->type == RUNE_CHAR) |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
3879 { |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
3880 len += (set_itext_ichar |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
3881 (strdata + len, Dynarr_atp (db->runes, |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
3882 elt)->object.chr.ch)); |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
3883 } |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
3884 } |
| 438 | 3885 |
| 771 | 3886 init_string_ascii_begin (result_str); |
| 3887 bump_string_modiff (result_str); | |
| 3888 sledgehammer_check_ascii_begin (result_str); | |
| 3889 | |
| 438 | 3890 for (elt = 0; elt < Dynarr_length (formatted_string_extent_dynarr); |
| 4187 | 3891 elt++) |
| 3892 { | |
| 3893 Lisp_Object extent = Qnil; | |
| 3894 Lisp_Object child; | |
| 3895 | |
| 3896 extent = wrap_extent (Dynarr_at (formatted_string_extent_dynarr, elt)); | |
| 3897 child = Fgethash (extent, buf->modeline_extent_table, Qnil); | |
| 3898 if (NILP (child)) | |
| 3899 { | |
| 3900 child = Fmake_extent (Qnil, Qnil, result_str); | |
| 3901 Fputhash (extent, child, buf->modeline_extent_table); | |
| 3902 } | |
| 3903 Fset_extent_parent (child, extent); | |
| 3904 set_extent_endpoints | |
| 3905 (XEXTENT (child), | |
| 3906 Dynarr_at (formatted_string_extent_start_dynarr, elt), | |
| 3907 Dynarr_at (formatted_string_extent_end_dynarr, elt), | |
| 3908 result_str); | |
| 3909 } | |
| 442 | 3910 |
| 3911 in_modeline_generation = 0; | |
| 438 | 3912 } |
| 3913 } | |
| 3914 | |
| 428 | 3915 /* Ensure that the given display line DL accurately represents the |
| 3916 modeline for the given window. */ | |
| 3917 static void | |
| 3918 generate_modeline (struct window *w, struct display_line *dl, int type) | |
| 3919 { | |
| 3920 struct buffer *b = XBUFFER (w->buffer); | |
| 3921 struct frame *f = XFRAME (w->frame); | |
| 3922 struct device *d = XDEVICE (f->device); | |
| 3923 | |
| 3924 /* Unlike display line and rune pointers, this one can't change underneath | |
| 3925 our feet. */ | |
| 3926 struct display_block *db = get_display_block_from_line (dl, TEXT); | |
| 3927 int max_pixpos, min_pixpos, ypos_adj; | |
| 3928 Lisp_Object font_inst; | |
| 3929 | |
| 3930 /* This will actually determine incorrect inside boundaries for the | |
| 3931 modeline since it ignores the margins. However being aware of this fact | |
| 3932 we never use those values anywhere so it doesn't matter. */ | |
| 3933 dl->bounds = calculate_display_line_boundaries (w, 1); | |
| 3934 | |
| 3935 /* We are generating a modeline. */ | |
| 3936 dl->modeline = 1; | |
| 3937 dl->cursor_elt = -1; | |
| 3938 | |
| 3939 /* Reset the runes on the modeline. */ | |
| 3940 Dynarr_reset (db->runes); | |
| 3941 | |
| 3942 if (!WINDOW_HAS_MODELINE_P (w)) | |
| 3943 { | |
| 3944 struct rune rb; | |
| 3945 | |
| 3946 /* If there is a horizontal scrollbar, don't add anything. */ | |
| 3947 if (window_scrollbar_height (w)) | |
| 3948 return; | |
| 3949 | |
| 3950 dl->ascent = DEVMETH (d, divider_height, ()); | |
| 3951 dl->descent = 0; | |
| 3952 /* The modeline is at the bottom of the gutters. */ | |
| 3953 dl->ypos = WINDOW_BOTTOM (w); | |
| 3954 | |
| 3955 rb.findex = MODELINE_INDEX; | |
| 3956 rb.xpos = dl->bounds.left_out; | |
| 3957 rb.width = dl->bounds.right_out - dl->bounds.left_out; | |
| 826 | 3958 rb.charpos = 0; |
| 428 | 3959 rb.endpos = 0; |
| 3960 rb.type = RUNE_HLINE; | |
| 3961 rb.object.hline.thickness = 1; | |
| 3962 rb.object.hline.yoffset = 0; | |
| 3963 rb.cursor_type = NO_CURSOR; | |
| 3964 | |
| 3965 if (!EQ (Qzero, w->modeline_shadow_thickness) | |
| 3966 && FRAME_WIN_P (f)) | |
| 3967 { | |
| 3968 int shadow_thickness = MODELINE_SHADOW_THICKNESS (w); | |
| 3969 | |
| 3970 dl->ypos -= shadow_thickness; | |
| 3971 rb.xpos += shadow_thickness; | |
| 3972 rb.width -= 2 * shadow_thickness; | |
| 3973 } | |
| 3974 | |
| 3975 Dynarr_add (db->runes, rb); | |
| 3976 return; | |
| 3977 } | |
| 3978 | |
| 3979 /* !!#### not right; needs to compute the max height of | |
| 3980 all the charsets */ | |
| 3981 font_inst = WINDOW_FACE_CACHEL_FONT (w, MODELINE_INDEX, Vcharset_ascii); | |
| 3982 | |
| 3983 dl->ascent = XFONT_INSTANCE (font_inst)->ascent; | |
| 3984 dl->descent = XFONT_INSTANCE (font_inst)->descent; | |
| 3985 | |
| 3986 min_pixpos = dl->bounds.left_out; | |
| 3987 max_pixpos = dl->bounds.right_out; | |
| 3988 | |
| 3989 if (!EQ (Qzero, w->modeline_shadow_thickness) && FRAME_WIN_P (f)) | |
| 3990 { | |
| 3991 int shadow_thickness = MODELINE_SHADOW_THICKNESS (w); | |
| 3992 | |
| 3993 ypos_adj = shadow_thickness; | |
| 3994 min_pixpos += shadow_thickness; | |
| 3995 max_pixpos -= shadow_thickness; | |
| 3996 } | |
| 3997 else | |
| 3998 ypos_adj = 0; | |
| 3999 | |
| 4000 generate_formatted_string_db (b->modeline_format, | |
| 4001 b->generated_modeline_string, w, dl, db, | |
| 4002 MODELINE_INDEX, min_pixpos, max_pixpos, type); | |
| 4003 | |
| 4004 /* The modeline is at the bottom of the gutters. We have to wait to | |
| 4005 set this until we've generated the modeline in order to account | |
| 4006 for any embedded faces. */ | |
| 4007 dl->ypos = WINDOW_BOTTOM (w) - dl->descent - ypos_adj; | |
| 4008 } | |
| 4009 | |
| 4010 static Charcount | |
| 867 | 4011 add_string_to_fstring_db_runes (pos_data *data, const Ibyte *str, |
| 4187 | 4012 Charcount pos, Charcount min_pos, |
| 771 | 4013 Charcount max_pos) |
| 428 | 4014 { |
| 4015 /* This function has been Mule-ized. */ | |
| 4016 Charcount end; | |
| 867 | 4017 const Ibyte *cur_pos = str; |
| 428 | 4018 struct display_block *db = data->db; |
| 4019 | |
| 4020 data->blank_width = space_width (XWINDOW (data->window)); | |
| 4021 while (Dynarr_length (db->runes) < pos) | |
| 4022 add_blank_rune (data, NULL, 0); | |
| 4023 | |
| 4024 end = (Dynarr_length (db->runes) + | |
| 4970 | 4025 bytecount_to_charcount (str, qxestrlen (str))); |
| 428 | 4026 if (max_pos != -1) |
| 4027 end = min (max_pos, end); | |
| 4028 | |
| 4029 while (pos < end && *cur_pos) | |
| 4030 { | |
| 867 | 4031 const Ibyte *old_cur_pos = cur_pos; |
| 428 | 4032 int succeeded; |
| 4033 | |
| 867 | 4034 data->ch = itext_ichar (cur_pos); |
| 4035 succeeded = (add_ichar_rune (data) != ADD_FAILED); | |
| 4036 INC_IBYTEPTR (cur_pos); | |
| 428 | 4037 if (succeeded) |
| 4187 | 4038 { |
| 4039 pos++; | |
| 4040 data->modeline_charpos++; | |
| 4041 data->bytepos += cur_pos - old_cur_pos; | |
| 4042 } | |
| 428 | 4043 } |
| 4044 | |
| 4045 while (Dynarr_length (db->runes) < min_pos && | |
| 4187 | 4046 (data->pixpos + data->blank_width <= data->max_pixpos)) |
| 428 | 4047 add_blank_rune (data, NULL, 0); |
| 4048 | |
| 4049 return Dynarr_length (db->runes); | |
| 4050 } | |
| 4051 | |
| 4052 /* #### Urk! Should also handle begin-glyphs and end-glyphs in | |
| 4053 modeline extents. */ | |
| 4054 static Charcount | |
| 4055 add_glyph_to_fstring_db_runes (pos_data *data, Lisp_Object glyph, | |
| 4187 | 4056 Charcount pos, Charcount UNUSED (min_pos), |
| 438 | 4057 Charcount max_pos, Lisp_Object extent) |
| 428 | 4058 { |
| 4059 /* This function has been Mule-ized. */ | |
| 4060 Charcount end; | |
| 4061 struct display_block *db = data->db; | |
| 4062 struct glyph_block gb; | |
| 4063 | |
| 4064 data->blank_width = space_width (XWINDOW (data->window)); | |
| 4065 while (Dynarr_length (db->runes) < pos) | |
| 4066 add_blank_rune (data, NULL, 0); | |
| 4067 | |
| 4068 end = Dynarr_length (db->runes) + 1; | |
| 4069 if (max_pos != -1) | |
| 4070 end = min (max_pos, end); | |
| 4071 | |
| 4072 gb.glyph = glyph; | |
| 438 | 4073 gb.extent = extent; |
| 428 | 4074 add_glyph_rune (data, &gb, BEGIN_GLYPHS, 0, 0); |
| 4075 pos++; | |
| 4076 | |
| 4077 while (Dynarr_length (db->runes) < pos && | |
| 4187 | 4078 (data->pixpos + data->blank_width <= data->max_pixpos)) |
| 428 | 4079 add_blank_rune (data, NULL, 0); |
| 4080 | |
| 4081 return Dynarr_length (db->runes); | |
| 4082 } | |
| 4083 | |
| 4084 /* If max_pos is == -1, it is considered to be infinite. The same is | |
| 4085 true of max_pixsize. */ | |
| 4086 #define SET_CURRENT_MODE_CHARS_PIXSIZE \ | |
| 4087 if (Dynarr_length (data->db->runes)) \ | |
| 4967 | 4088 cur_pixsize = data->pixpos - Dynarr_begin (data->db->runes)->xpos; \ |
| 428 | 4089 else \ |
| 4090 cur_pixsize = 0; | |
| 4091 | |
| 4092 /* Note that this function does "positions" in terms of characters and | |
| 4093 not in terms of columns. This is necessary to make the formatting | |
| 4094 work correctly when proportional width fonts are used in the | |
| 4095 modeline. */ | |
| 4096 static Charcount | |
| 4097 generate_fstring_runes (struct window *w, pos_data *data, Charcount pos, | |
| 4187 | 4098 Charcount min_pos, Charcount max_pos, |
| 4099 Lisp_Object elt, int depth, int max_pixsize, | |
| 4100 face_index findex, int type, Charcount *offset, | |
| 438 | 4101 Lisp_Object cur_ext) |
| 428 | 4102 { |
| 4103 /* This function has been Mule-ized. */ | |
| 4104 /* #### The other losing things in this function are: | |
| 4105 | |
| 4106 -- C zero-terminated-string lossage. | |
| 4107 -- Non-printable characters should be converted into something | |
| 4187 | 4108 appropriate (e.g. ^F) instead of blindly being printed anyway. |
| 428 | 4109 */ |
| 4110 | |
| 4111 tail_recurse: | |
| 4112 if (depth > 10) | |
| 4113 goto invalid; | |
| 4114 | |
| 4115 depth++; | |
| 4116 | |
| 4117 if (STRINGP (elt)) | |
| 4118 { | |
| 4119 /* A string. Add to the display line and check for %-constructs | |
| 4187 | 4120 within it. */ |
| 428 | 4121 |
| 2552 | 4122 Ibyte *this_str = XSTRING_DATA (elt); |
| 4123 | |
| 4124 while ((pos < max_pos || max_pos == -1) && *this_str) | |
| 4187 | 4125 { |
| 4126 Ibyte *last = this_str; | |
| 4127 | |
| 4128 while (*this_str && *this_str != '%') | |
| 4129 this_str++; | |
| 4130 | |
| 4131 if (this_str != last) | |
| 4132 { | |
| 4133 /* No %-construct */ | |
| 4134 Charcount size = | |
| 2552 | 4135 bytecount_to_charcount (last, this_str - last); |
| 438 | 4136 |
| 4137 if (size <= *offset) | |
| 4138 *offset -= size; | |
| 4139 else | |
| 4140 { | |
| 4141 Charcount tmp_max = (max_pos == -1 ? pos + size - *offset : | |
| 4142 min (pos + size - *offset, max_pos)); | |
| 867 | 4143 const Ibyte *tmp_last = itext_n_addr (last, *offset); |
| 438 | 4144 |
| 4145 pos = add_string_to_fstring_db_runes (data, tmp_last, | |
| 4146 pos, pos, tmp_max); | |
| 4147 *offset = 0; | |
| 4148 } | |
| 4187 | 4149 } |
| 4150 else /* *this_str == '%' */ | |
| 4151 { | |
| 4152 Charcount spec_width = 0; | |
| 4153 | |
| 4154 this_str++; /* skip over '%' */ | |
| 4155 | |
| 4156 /* We can't allow -ve args due to the "%-" construct. | |
| 4157 * Argument specifies minwidth but not maxwidth | |
| 4158 * (maxwidth can be specified by | |
| 4159 * (<negative-number> . <stuff>) modeline elements) | |
| 4160 */ | |
| 4161 while (isdigit (*this_str)) | |
| 4162 { | |
| 4163 spec_width = spec_width * 10 + (*this_str - '0'); | |
| 4164 this_str++; | |
| 4165 } | |
| 4166 spec_width += pos; | |
| 4167 | |
| 4168 if (*this_str == 'M') | |
| 4169 { | |
| 4170 pos = generate_fstring_runes (w, data, pos, spec_width, | |
| 4171 max_pos, Vglobal_mode_string, | |
| 4172 depth, max_pixsize, findex, | |
| 4173 type, offset, cur_ext); | |
| 4174 } | |
| 4175 else if (*this_str == '-') | |
| 4176 { | |
| 4177 Charcount num_to_add; | |
| 4178 | |
| 4179 if (max_pixsize < 0) | |
| 4180 num_to_add = 0; | |
| 4181 else if (max_pos != -1) | |
| 4182 num_to_add = max_pos - pos; | |
| 4183 else | |
| 4184 { | |
| 4185 int cur_pixsize; | |
| 4186 int dash_pixsize; | |
| 4187 Ibyte ch = '-'; | |
| 4188 SET_CURRENT_MODE_CHARS_PIXSIZE; | |
| 4189 | |
| 4190 dash_pixsize = | |
|
4815
6540302eedf5
Fix query_string_geometry lookup domain
Didier Verna <didier@lrde.epita.fr>
parents:
4528
diff
changeset
|
4191 redisplay_window_text_width_string |
|
6540302eedf5
Fix query_string_geometry lookup domain
Didier Verna <didier@lrde.epita.fr>
parents:
4528
diff
changeset
|
4192 (w, findex, &ch, Qnil, 0, 1); |
| 4187 | 4193 |
| 4194 if (dash_pixsize == 0) | |
| 3094 | 4195 num_to_add = 0; |
| 4196 else { | |
| 4197 num_to_add = (max_pixsize - cur_pixsize) / dash_pixsize; | |
| 4198 num_to_add++; | |
| 4199 } | |
| 4187 | 4200 } |
| 4201 | |
| 4202 while (num_to_add--) | |
| 4203 pos = add_string_to_fstring_db_runes | |
| 4204 (data, (const Ibyte *) "-", pos, pos, max_pos); | |
| 4205 } | |
| 4206 else if (*this_str != 0) | |
| 4207 { | |
| 4208 Ichar ch = itext_ichar (this_str); | |
| 4209 Ibyte *str; | |
| 438 | 4210 Charcount size; |
| 4211 | |
| 4187 | 4212 decode_mode_spec (w, ch, type); |
| 4213 | |
| 4967 | 4214 str = Dynarr_begin (mode_spec_ibyte_string); |
| 438 | 4215 size = bytecount_to_charcount |
| 4216 /* Skip the null character added by `decode_mode_spec' */ | |
| 867 | 4217 (str, Dynarr_length (mode_spec_ibyte_string)) - 1; |
| 438 | 4218 |
| 4219 if (size <= *offset) | |
| 4220 *offset -= size; | |
| 4221 else | |
| 4222 { | |
| 867 | 4223 const Ibyte *tmp_str = itext_n_addr (str, *offset); |
| 438 | 4224 |
| 440 | 4225 /* #### NOTE: I don't understand why a tmp_max is not |
| 438 | 4226 computed and used here as in the plain string case |
| 4227 above. -- dv */ | |
| 4228 pos = add_string_to_fstring_db_runes (data, tmp_str, | |
| 4229 pos, pos, | |
| 4230 max_pos); | |
| 4231 *offset = 0; | |
| 4232 } | |
| 4187 | 4233 } |
| 4234 | |
| 4235 /* NOT this_str++. There could be any sort of character at | |
| 4236 the current position. */ | |
| 4237 INC_IBYTEPTR (this_str); | |
| 4238 } | |
| 4239 | |
| 4240 if (max_pixsize > 0) | |
| 4241 { | |
| 4242 int cur_pixsize; | |
| 4243 SET_CURRENT_MODE_CHARS_PIXSIZE; | |
| 4244 | |
| 4245 if (cur_pixsize >= max_pixsize) | |
| 4246 break; | |
| 4247 } | |
| 4248 } | |
| 428 | 4249 } |
| 4250 else if (SYMBOLP (elt)) | |
| 4251 { | |
| 4252 /* A symbol: process the value of the symbol recursively | |
| 4187 | 4253 as if it appeared here directly. */ |
| 428 | 4254 Lisp_Object tem = symbol_value_in_buffer (elt, w->buffer); |
| 4255 | |
| 4256 if (!UNBOUNDP (tem)) | |
| 4187 | 4257 { |
| 438 | 4258 /* If value is a string, output that string literally: |
| 4187 | 4259 don't check for % within it. */ |
| 4260 if (STRINGP (tem)) | |
| 4261 { | |
| 867 | 4262 Ibyte *str = XSTRING_DATA (tem); |
| 826 | 4263 Charcount size = string_char_length (tem); |
| 438 | 4264 |
| 4265 if (size <= *offset) | |
| 4266 *offset -= size; | |
| 4267 else | |
| 4268 { | |
| 867 | 4269 const Ibyte *tmp_str = itext_n_addr (str, *offset); |
| 438 | 4270 |
| 440 | 4271 /* #### NOTE: I don't understand why a tmp_max is not |
| 438 | 4272 computed and used here as in the plain string case |
| 4273 above. -- dv */ | |
| 4274 pos = add_string_to_fstring_db_runes (data, tmp_str, pos, | |
| 4275 min_pos, max_pos); | |
| 4276 *offset = 0; | |
| 4277 } | |
| 4187 | 4278 } |
| 4279 /* Give up right away for nil or t. */ | |
| 4280 else if (!EQ (tem, elt)) | |
| 4281 { | |
| 4282 elt = tem; | |
| 4283 goto tail_recurse; | |
| 4284 } | |
| 4285 } | |
| 428 | 4286 } |
| 4287 else if (GENERIC_SPECIFIERP (elt)) | |
| 4288 { | |
| 4289 Lisp_Object window, tem; | |
| 793 | 4290 window = wrap_window (w); |
| 428 | 4291 tem = specifier_instance_no_quit (elt, Qunbound, window, |
| 793 | 4292 ERROR_ME_DEBUG_WARN, 0, Qzero); |
| 428 | 4293 if (!UNBOUNDP (tem)) |
| 4294 { | |
| 4295 elt = tem; | |
| 4296 goto tail_recurse; | |
| 4297 } | |
| 4298 } | |
| 4299 else if (CONSP (elt)) | |
| 4300 { | |
| 4301 /* A cons cell: four distinct cases. | |
| 438 | 4302 * - If first element is a string or a cons, process all the elements |
| 4303 * and effectively concatenate them. | |
| 4304 * - If first element is a negative number, truncate displaying cdr to | |
| 4305 * at most that many characters. If positive, pad (with spaces) | |
| 4306 * to at least that many characters. | |
| 771 | 4307 * - If first element is another symbol or a boolean specifier, process |
| 4308 * the cadr or caddr recursively according to whether the symbol's | |
| 4309 * value or specifier's instance is non-nil or nil. | |
| 4310 * - If first element is , process the cadr or caddr | |
| 4311 * recursively according to whether the instance of the specifier in | |
| 4312 * the modeline's window is non-nil or nil. | |
| 442 | 4313 * - If first element is an extent, process the cdr recursively |
| 4314 * and handle the extent's face. | |
| 428 | 4315 */ |
| 438 | 4316 |
| 428 | 4317 Lisp_Object car, tem; |
| 4318 | |
| 4319 car = XCAR (elt); | |
| 771 | 4320 if (SYMBOLP (car) || BOOLEAN_SPECIFIERP (car)) |
| 438 | 4321 { |
| 4322 elt = XCDR (elt); | |
| 4323 if (!CONSP (elt)) | |
| 4324 goto invalid; | |
| 4325 | |
| 771 | 4326 if (SYMBOLP (car)) |
| 4327 tem = symbol_value_in_buffer (car, w->buffer); | |
| 4328 else | |
| 4329 tem = specifier_instance_no_quit (car, Qunbound, wrap_window (w), | |
| 793 | 4330 ERROR_ME_DEBUG_WARN, 0, Qzero); |
| 438 | 4331 /* elt is now the cdr, and we know it is a cons cell. |
| 4332 Use its car if CAR has a non-nil value. */ | |
| 771 | 4333 if (!UNBOUNDP (tem) && !NILP (tem)) |
| 438 | 4334 { |
| 771 | 4335 elt = XCAR (elt); |
| 4336 goto tail_recurse; | |
| 438 | 4337 } |
| 771 | 4338 /* Symbol's value or specifier's instance is nil or unbound |
| 438 | 4339 * Get the cddr of the original list |
| 4340 * and if possible find the caddr and use that. | |
| 4341 */ | |
| 4342 elt = XCDR (elt); | |
| 4343 if (NILP (elt)) | |
| 4344 ; | |
| 4345 else if (!CONSP (elt)) | |
| 4346 goto invalid; | |
| 4347 else | |
| 4348 { | |
| 4349 elt = XCAR (elt); | |
| 4350 goto tail_recurse; | |
| 4351 } | |
| 4352 } | |
| 428 | 4353 else if (INTP (car)) |
| 4187 | 4354 { |
| 4355 Charcount lim = XINT (car); | |
| 4356 | |
| 4357 elt = XCDR (elt); | |
| 4358 | |
| 4359 if (lim < 0) | |
| 4360 { | |
| 4361 /* Negative int means reduce maximum width. | |
| 4362 * DO NOT change MIN_PIXPOS here! | |
| 4363 * (20 -10 . foo) should truncate foo to 10 col | |
| 4364 * and then pad to 20. | |
| 4365 */ | |
| 4366 if (max_pos == -1) | |
| 4367 max_pos = pos - lim; | |
| 4368 else | |
| 4369 max_pos = min (max_pos, pos - lim); | |
| 4370 } | |
| 4371 else if (lim > 0) | |
| 4372 { | |
| 4373 /* Padding specified. Don't let it be more than | |
| 4374 * current maximum. | |
| 4375 */ | |
| 4376 lim += pos; | |
| 4377 if (max_pos != -1 && lim > max_pos) | |
| 4378 lim = max_pos; | |
| 4379 /* If that's more padding than already wanted, queue it. | |
| 4380 * But don't reduce padding already specified even if | |
| 4381 * that is beyond the current truncation point. | |
| 4382 */ | |
| 4383 if (lim > min_pos) | |
| 4384 min_pos = lim; | |
| 4385 } | |
| 4386 goto tail_recurse; | |
| 4387 } | |
| 428 | 4388 else if (STRINGP (car) || CONSP (car)) |
| 4187 | 4389 { |
| 4390 int limit = 50; | |
| 4391 | |
| 4392 /* LIMIT is to protect against circular lists. */ | |
| 4393 while (CONSP (elt) && --limit > 0 | |
| 4394 && (pos < max_pos || max_pos == -1)) | |
| 4395 { | |
| 4396 pos = generate_fstring_runes (w, data, pos, pos, max_pos, | |
| 4397 XCAR (elt), depth, max_pixsize, | |
| 438 | 4398 findex, type, offset, cur_ext); |
| 4187 | 4399 elt = XCDR (elt); |
| 4400 } | |
| 4401 } | |
| 428 | 4402 else if (EXTENTP (car)) |
| 4187 | 4403 { |
| 4404 struct extent *ext = XEXTENT (car); | |
| 4405 | |
| 4406 if (EXTENT_LIVE_P (ext)) | |
| 4407 { | |
| 4408 face_index old_findex = data->findex; | |
| 4409 Lisp_Object face; | |
| 4410 Lisp_Object font_inst; | |
| 4411 face_index new_findex; | |
| 4412 Bytecount start = data->bytepos; | |
| 4413 | |
| 4414 face = extent_face (ext); | |
| 4415 if (FACEP (face)) | |
| 4416 { | |
| 4417 /* #### needs to merge faces, sigh */ | |
| 4418 /* #### needs to handle list of faces */ | |
| 4419 new_findex = get_builtin_face_cache_index (w, face); | |
| 4420 /* !!#### not right; needs to compute the max height of | |
| 4421 all the charsets */ | |
| 4422 font_inst = WINDOW_FACE_CACHEL_FONT (w, new_findex, | |
| 4423 Vcharset_ascii); | |
| 4424 | |
| 4425 data->dl->ascent = max (data->dl->ascent, | |
| 4426 XFONT_INSTANCE (font_inst)->ascent); | |
| 4427 data->dl->descent = max (data->dl->descent, | |
| 4428 XFONT_INSTANCE (font_inst)-> | |
| 4429 descent); | |
| 4430 } | |
| 4431 else | |
| 4432 new_findex = old_findex; | |
| 4433 | |
| 4434 data->findex = new_findex; | |
| 4435 pos = generate_fstring_runes (w, data, pos, pos, max_pos, | |
| 4436 XCDR (elt), depth - 1, | |
| 438 | 4437 max_pixsize, new_findex, type, |
| 4438 offset, car); | |
| 4187 | 4439 data->findex = old_findex; |
| 4440 Dynarr_add (formatted_string_extent_dynarr, ext); | |
| 4441 Dynarr_add (formatted_string_extent_start_dynarr, start); | |
| 4442 Dynarr_add (formatted_string_extent_end_dynarr, data->bytepos); | |
| 4443 } | |
| 4444 } | |
| 428 | 4445 } |
| 4446 else if (GLYPHP (elt)) | |
| 4447 { | |
| 438 | 4448 /* Glyphs are considered as one character with respect to the modeline |
| 4449 horizontal scrolling facility. -- dv */ | |
| 4450 if (*offset > 0) | |
| 4451 *offset -= 1; | |
| 4452 else | |
| 4453 pos = add_glyph_to_fstring_db_runes (data, elt, pos, pos, max_pos, | |
| 4454 cur_ext); | |
| 428 | 4455 } |
| 4456 else | |
| 4457 { | |
| 4458 invalid: | |
| 438 | 4459 { |
| 4970 | 4460 const Ascbyte *str = GETTEXT ("*invalid*"); |
| 438 | 4461 Charcount size = (Charcount) strlen (str); /* is this ok ?? -- dv */ |
| 4462 | |
| 4463 if (size <= *offset) | |
| 4464 *offset -= size; | |
| 4465 else | |
| 4466 { | |
| 867 | 4467 const Ibyte *tmp_str = |
| 4468 itext_n_addr ((const Ibyte *) str, *offset); | |
| 438 | 4469 |
| 440 | 4470 /* #### NOTE: I don't understand why a tmp_max is not computed and |
| 438 | 4471 used here as in the plain string case above. -- dv */ |
| 4472 pos = add_string_to_fstring_db_runes (data, tmp_str, pos, | |
| 4473 min_pos, max_pos); | |
| 4474 *offset = 0; | |
| 4475 } | |
| 4476 } | |
| 428 | 4477 } |
| 4478 | |
| 4479 if (min_pos > pos) | |
| 4480 { | |
| 867 | 4481 add_string_to_fstring_db_runes (data, (const Ibyte *) "", pos, |
| 438 | 4482 min_pos, -1); |
| 428 | 4483 } |
| 4484 | |
| 4485 return pos; | |
| 4486 } | |
| 4487 | |
| 4488 /* Update just the modeline. Assumes the desired display structs. If | |
| 4489 they do not have a modeline block, it does nothing. */ | |
| 4490 static void | |
| 4491 regenerate_modeline (struct window *w) | |
| 4492 { | |
| 4493 display_line_dynarr *dla = window_display_lines (w, DESIRED_DISP); | |
| 4494 | |
| 4967 | 4495 if (!Dynarr_length (dla) || !Dynarr_begin (dla)->modeline) |
| 428 | 4496 return; |
| 4497 else | |
| 4498 { | |
| 4967 | 4499 generate_modeline (w, Dynarr_begin (dla), DESIRED_DISP); |
| 428 | 4500 redisplay_update_line (w, 0, 0, 0); |
| 4501 } | |
| 4502 } | |
| 4503 | |
| 4504 /* Make sure that modeline display line is present in the given | |
| 4505 display structs if the window has a modeline and update that | |
| 4506 line. Returns true if a modeline was needed. */ | |
| 4507 static int | |
| 4508 ensure_modeline_generated (struct window *w, int type) | |
| 4509 { | |
| 4510 int need_modeline; | |
| 4511 | |
| 4512 /* minibuffer windows don't have modelines */ | |
| 4513 if (MINI_WINDOW_P (w)) | |
| 4514 need_modeline = 0; | |
| 4515 /* windows which haven't had it turned off do */ | |
| 4516 else if (WINDOW_HAS_MODELINE_P (w)) | |
| 4517 need_modeline = 1; | |
| 4518 /* windows which have it turned off don't have a divider if there is | |
| 4519 a horizontal scrollbar */ | |
| 4520 else if (window_scrollbar_height (w)) | |
| 4521 need_modeline = 0; | |
| 4522 /* and in this case there is none */ | |
| 4523 else | |
| 4524 need_modeline = 1; | |
| 4525 | |
| 4526 if (need_modeline) | |
| 4527 { | |
| 4528 display_line_dynarr *dla; | |
| 4529 | |
| 4530 dla = window_display_lines (w, type); | |
| 4531 | |
| 4532 /* We don't care if there is a display line which is not | |
| 4187 | 4533 currently a modeline because it is definitely going to become |
| 4534 one if we have gotten to this point. */ | |
| 428 | 4535 if (Dynarr_length (dla) == 0) |
| 4536 { | |
| 4537 if (Dynarr_largest (dla) > 0) | |
| 5038 | 4538 Dynarr_incrementr (dla); |
| 428 | 4539 else |
| 4540 { | |
| 4541 struct display_line modeline; | |
| 4207 | 4542 |
| 4543 DISPLAY_LINE_INIT (modeline); | |
| 428 | 4544 Dynarr_add (dla, modeline); |
| 4545 } | |
| 4546 } | |
| 4547 | |
| 4548 /* If we're adding a new place marker go ahead and generate the | |
| 4187 | 4549 modeline so that it is available for use by |
| 4550 window_modeline_height. */ | |
| 4967 | 4551 generate_modeline (w, Dynarr_begin (dla), type); |
| 428 | 4552 } |
| 4553 | |
| 4554 return need_modeline; | |
| 4555 } | |
| 4556 | |
| 4557 /* #### Kludge or not a kludge. I tend towards the former. */ | |
| 4558 int | |
| 4559 real_current_modeline_height (struct window *w) | |
| 4560 { | |
| 4561 Fset_marker (w->start[CMOTION_DISP], w->start[CURRENT_DISP], w->buffer); | |
| 4562 Fset_marker (w->pointm[CMOTION_DISP], w->pointm[CURRENT_DISP], w->buffer); | |
| 4563 | |
| 4564 if (ensure_modeline_generated (w, CMOTION_DISP)) | |
| 4565 { | |
| 4566 display_line_dynarr *dla = window_display_lines (w, CMOTION_DISP); | |
| 4567 | |
| 4568 if (Dynarr_length (dla)) | |
| 4569 { | |
| 4967 | 4570 if (Dynarr_begin (dla)->modeline) |
| 4571 return (Dynarr_begin (dla)->ascent + | |
| 4572 Dynarr_begin (dla)->descent); | |
| 428 | 4573 } |
| 4574 } | |
| 4575 return 0; | |
| 4576 } | |
| 4577 | |
| 4578 | |
| 4579 /***************************************************************************/ | |
| 819 | 4580 /* */ |
| 826 | 4581 /* displayable string routines */ |
| 819 | 4582 /* */ |
| 428 | 4583 /***************************************************************************/ |
| 4584 | |
| 4585 /* Given a position for a string in a window, ensure that the given | |
| 4586 display line DL accurately represents the text on a line starting | |
| 4587 at the given position. | |
| 4588 | |
| 4589 Yes, this is duplicating the code of create_text_block, but it | |
| 4590 looked just too hard to change create_text_block to handle strings | |
| 4591 *and* buffers. We already make a distinction between the two | |
| 4592 elsewhere in the code so I think unifying them would require a | |
| 4593 complete MULE rewrite. Besides, the other distinction is that these | |
| 4594 functions cover text that the user *cannot edit* so we can remove | |
| 4595 everything to do with cursors, minibuffers etc. Eventually the | |
| 4596 modeline routines should be modified to use this code as it copes | |
| 4597 with many more types of display situation. */ | |
| 4598 | |
| 665 | 4599 static Charbpos |
| 428 | 4600 create_string_text_block (struct window *w, Lisp_Object disp_string, |
| 4601 struct display_line *dl, | |
| 826 | 4602 Charcount start_pos, |
| 428 | 4603 prop_block_dynarr **prop, |
| 4604 face_index default_face) | |
| 4605 { | |
| 4606 struct frame *f = XFRAME (w->frame); | |
| 4607 /* Note that a lot of the buffer controlled stuff has been left in | |
| 4608 because you might well want to make use of it (selective display | |
| 4609 etc), its just the buffer text that we do not use. However, it | |
| 4610 seems to be possible for buffer to be nil sometimes so protect | |
| 4611 against this case. */ | |
| 4612 struct buffer *b = BUFFERP (w->buffer) ? XBUFFER (w->buffer) : 0; | |
| 4613 struct device *d = XDEVICE (f->device); | |
| 4614 | |
| 4615 /* we're working with these a lot so precalculate them */ | |
| 4616 Bytecount slen = XSTRING_LENGTH (disp_string); | |
| 826 | 4617 Bytecount byte_string_zv = slen; |
| 4618 Bytecount byte_start_pos = string_index_char_to_byte (disp_string, start_pos); | |
| 428 | 4619 |
| 4620 pos_data data; | |
| 4621 | |
| 4622 int truncate_win = b ? window_truncation_on (w) : 0; | |
| 4623 | |
| 442 | 4624 /* We're going to ditch selective display for static text, it's an |
| 4625 FSF thing and invisible extents are the way to go here. | |
| 4626 Implementing it also relies on a number of buffer-specific | |
| 428 | 4627 functions that we don't have the luxury of being able to use |
| 4628 here. */ | |
| 4629 | |
| 4630 /* The variable ctl-arrow allows the user to specify what characters | |
| 4631 can actually be displayed and which octal should be used for. | |
| 4632 #### This variable should probably have some rethought done to | |
| 4633 it. | |
| 4634 | |
| 4635 #### It would also be really nice if you could specify that | |
| 4636 the characters come out in hex instead of in octal. Mule | |
| 4637 does that by adding a ctl-hexa variable similar to ctl-arrow, | |
| 4638 but that's bogus -- we need a more general solution. I | |
| 4639 think you need to extend the concept of display tables | |
| 4640 into a more general conversion mechanism. Ideally you | |
| 4641 could specify a Lisp function that converts characters, | |
| 4642 but this violates the Second Golden Rule and besides would | |
| 4643 make things way way way way slow. | |
| 4644 | |
| 4645 So instead, we extend the display-table concept, which was | |
| 4646 historically limited to 256-byte vectors, to one of the | |
| 4647 following: | |
| 4648 | |
| 4649 a) A 256-entry vector, for backward compatibility; | |
| 4650 b) char-table, mapping characters to values; | |
| 4651 c) range-table, mapping ranges of characters to values; | |
| 4652 d) a list of the above. | |
| 4653 | |
| 4654 The (d) option allows you to specify multiple display tables | |
| 4655 instead of just one. Each display table can specify conversions | |
| 4656 for some characters and leave others unchanged. The way the | |
| 4657 character gets displayed is determined by the first display table | |
| 4658 with a binding for that character. This way, you could call a | |
| 4659 function `enable-hex-display' that adds a hex display-table to | |
| 4660 the list of display tables for the current buffer. | |
| 4661 | |
| 4662 #### ...not yet implemented... Also, we extend the concept of | |
| 4663 "mapping" to include a printf-like spec. Thus you can make all | |
| 4664 extended characters show up as hex with a display table like | |
| 4665 this: | |
| 4666 | |
| 4187 | 4667 #s(range-table data ((256 524288) (format "%x"))) |
| 428 | 4668 |
| 4669 Since more than one display table is possible, you have | |
| 4670 great flexibility in mapping ranges of characters. */ | |
| 867 | 4671 Ichar printable_min = b ? (CHAR_OR_CHAR_INTP (b->ctl_arrow) |
| 428 | 4672 ? XCHAR_OR_CHAR_INT (b->ctl_arrow) |
| 4673 : ((EQ (b->ctl_arrow, Qt) || EQ (b->ctl_arrow, Qnil)) | |
| 4674 ? 255 : 160)) : 255; | |
| 4675 | |
| 4676 Lisp_Object face_dt, window_dt; | |
| 4677 | |
| 4678 /* The text display block for this display line. */ | |
| 4679 struct display_block *db = get_display_block_from_line (dl, TEXT); | |
| 4680 | |
| 4681 /* The first time through the main loop we need to force the glyph | |
| 4682 data to be updated. */ | |
| 4683 int initial = 1; | |
| 4684 | |
| 4685 /* Apparently the new extent_fragment_update returns an end position | |
| 4686 equal to the position passed in if there are no more runs to be | |
| 4687 displayed. */ | |
| 4688 int no_more_frags = 0; | |
| 4689 | |
| 4690 dl->used_prop_data = 0; | |
| 4691 dl->num_chars = 0; | |
| 442 | 4692 dl->line_continuation = 0; |
| 428 | 4693 |
| 4187 | 4694 /* Set up faces to use for clearing areas, used by output_display_line. */ |
| 428 | 4695 dl->default_findex = default_face; |
| 4187 | 4696 if (default_face > DEFAULT_INDEX) |
| 428 | 4697 { |
| 4698 dl->left_margin_findex = default_face; | |
| 4699 dl->right_margin_findex = default_face; | |
| 4700 } | |
| 4701 else | |
| 4702 { | |
| 434 | 4703 dl->left_margin_findex = |
| 428 | 4704 get_builtin_face_cache_index (w, Vleft_margin_face); |
| 434 | 4705 dl->right_margin_findex = |
| 428 | 4706 get_builtin_face_cache_index (w, Vright_margin_face); |
| 4707 } | |
| 4708 | |
| 4709 xzero (data); | |
| 4710 data.ef = extent_fragment_new (disp_string, f); | |
| 4711 | |
| 4712 /* These values are used by all of the rune addition routines. We add | |
| 4713 them to this structure for ease of passing. */ | |
| 4714 data.d = d; | |
| 793 | 4715 data.window = wrap_window (w); |
| 428 | 4716 data.db = db; |
| 4717 data.dl = dl; | |
| 4718 | |
| 826 | 4719 data.byte_charpos = byte_start_pos; |
| 428 | 4720 data.pixpos = dl->bounds.left_in; |
| 4721 data.last_charset = Qunbound; | |
| 4722 data.last_findex = default_face; | |
| 4723 data.result_str = Qnil; | |
| 4724 data.string = disp_string; | |
| 4725 | |
| 4726 /* Set the right boundary adjusting it to take into account any end | |
| 4727 glyph. Save the width of the end glyph for later use. */ | |
| 4728 data.max_pixpos = dl->bounds.right_in; | |
| 819 | 4729 data.max_pixpos -= data.end_glyph_width; |
| 428 | 4730 |
| 4731 data.cursor_type = NO_CURSOR; | |
| 4732 data.cursor_x = -1; | |
| 4733 | |
| 4734 data.start_col = 0; | |
| 4735 /* I don't think we want this, string areas should not scroll with | |
| 434 | 4736 the window |
| 428 | 4737 data.start_col = w->hscroll; |
| 826 | 4738 data.byte_start_col_enabled = (w->hscroll ? byte_start_pos : 0); |
| 428 | 4739 */ |
| 826 | 4740 data.byte_start_col_enabled = 0; |
| 428 | 4741 data.hscroll_glyph_width_adjust = 0; |
| 4742 | |
| 4743 /* We regenerate the line from the very beginning. */ | |
| 4744 Dynarr_reset (db->runes); | |
| 4745 | |
| 4746 /* Why is this less than or equal and not just less than? If the | |
| 4747 starting position is already equal to the maximum we can't add | |
| 4748 anything else, right? Wrong. We might still have a newline to | |
| 4749 add. A newline can use the room allocated for an end glyph since | |
| 4750 if we add it we know we aren't going to be adding any end | |
| 4751 glyph. */ | |
| 4752 | |
| 4753 /* #### Chuck -- I think this condition should be while (1). | |
| 4754 Otherwise if (e.g.) there is one begin-glyph and one end-glyph | |
| 4755 and the begin-glyph ends exactly at the end of the window, the | |
| 4756 end-glyph and text might not be displayed. while (1) ensures | |
| 4757 that the loop terminates only when either (a) there is | |
| 4758 propagation data or (b) the end-of-line or end-of-buffer is hit. | |
| 4759 | |
| 4760 #### Also I think you need to ensure that the operation | |
| 4761 "add begin glyphs; add end glyphs; add text" is atomic and | |
| 4762 can't get interrupted in the middle. If you run off the end | |
| 4763 of the line during that operation, then you keep accumulating | |
| 4764 propagation data until you're done. Otherwise, if the (e.g.) | |
| 4765 there's a begin glyph at a particular position and attempting | |
| 4766 to display that glyph results in window-end being hit and | |
| 4767 propagation data being generated, then the character at that | |
| 4768 position won't be displayed. | |
| 4769 | |
| 4770 #### See also the comment after the end of this loop, below. | |
| 4771 */ | |
| 4772 while (data.pixpos <= data.max_pixpos) | |
| 4773 { | |
| 4774 /* #### This check probably should not be necessary. */ | |
| 826 | 4775 if (data.byte_charpos > byte_string_zv) |
| 428 | 4776 { |
| 4777 /* #### urk! More of this lossage! */ | |
| 826 | 4778 data.byte_charpos--; |
| 428 | 4779 goto done; |
| 4780 } | |
| 4781 | |
| 4782 /* Check for face changes. */ | |
| 826 | 4783 if (initial || (!no_more_frags && data.byte_charpos == data.ef->end)) |
| 428 | 4784 { |
| 819 | 4785 Lisp_Object last_glyph = Qnil; |
| 4786 /* Deal with clipped glyphs that we have already displayed. */ | |
| 4967 | 4787 if (*prop && Dynarr_begin (*prop)->type == PROP_GLYPH) |
| 4788 { | |
| 4789 last_glyph = Dynarr_begin (*prop)->data.p_glyph.glyph; | |
| 819 | 4790 Dynarr_free (*prop); |
| 4791 *prop = 0; | |
| 4792 } | |
| 428 | 4793 /* Now compute the face and begin/end-glyph information. */ |
| 4794 data.findex = | |
| 793 | 4795 /* Remember that the extent-fragment routines deal in |
| 4187 | 4796 Bytexpos's. */ |
| 826 | 4797 extent_fragment_update (w, data.ef, data.byte_charpos, last_glyph); |
| 428 | 4798 /* This is somewhat cheesy but the alternative is to |
| 4187 | 4799 propagate default_face into extent_fragment_update. */ |
| 428 | 4800 if (data.findex == DEFAULT_INDEX) |
| 4801 data.findex = default_face; | |
| 4802 | |
| 4803 get_display_tables (w, data.findex, &face_dt, &window_dt); | |
| 4804 | |
| 826 | 4805 if (data.byte_charpos == data.ef->end) |
| 428 | 4806 no_more_frags = 1; |
| 4807 } | |
| 4808 initial = 0; | |
| 4809 | |
| 4810 /* Determine what is next to be displayed. We first handle any | |
| 4187 | 4811 glyphs returned by glyphs_at_charbpos. If there are no glyphs to |
| 4812 display then we determine what to do based on the character at the | |
| 4813 current buffer position. */ | |
| 428 | 4814 |
| 4815 /* If the current position is covered by an invisible extent, do | |
| 4187 | 4816 nothing (except maybe add some ellipses). |
| 428 | 4817 |
| 4818 #### The behavior of begin and end-glyphs at the edge of an | |
| 4819 invisible extent should be investigated further. This is | |
| 4820 fairly low priority though. */ | |
| 4821 if (data.ef->invisible) | |
| 4822 { | |
| 4823 /* #### Chuck, perhaps you could look at this code? I don't | |
| 4824 really know what I'm doing. */ | |
| 4825 if (*prop) | |
| 4826 { | |
| 4827 Dynarr_free (*prop); | |
| 4828 *prop = 0; | |
| 4829 } | |
| 4830 | |
| 4831 /* The extent fragment code only sets this when we should | |
| 4832 really display the ellipses. It makes sure the ellipses | |
| 4833 don't get displayed more than once in a row. */ | |
| 4834 if (data.ef->invisible_ellipses) | |
| 4835 { | |
| 4836 struct glyph_block gb; | |
| 4837 | |
| 4838 data.ef->invisible_ellipses_already_displayed = 1; | |
| 4839 data.ef->invisible_ellipses = 0; | |
| 4840 gb.extent = Qnil; | |
| 4841 gb.glyph = Vinvisible_text_glyph; | |
| 4842 *prop = add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0, | |
| 4843 GLYPH_CACHEL (w, INVIS_GLYPH_INDEX)); | |
| 4844 /* Perhaps they shouldn't propagate if the very next thing | |
| 4845 is to display a newline (for compatibility with | |
| 4846 selective-display-ellipses)? Maybe that's too | |
| 4847 abstruse. */ | |
| 4848 if (*prop) | |
| 4849 goto done; | |
| 4850 } | |
| 4851 | |
| 638 | 4852 /* #### What if we're dealing with a display table? */ |
| 428 | 4853 if (data.start_col) |
| 4854 data.start_col--; | |
| 4855 | |
| 826 | 4856 if (data.byte_charpos == byte_string_zv) |
| 428 | 4857 goto done; |
| 4858 else | |
| 826 | 4859 INC_BYTECOUNT (XSTRING_DATA (disp_string), data.byte_charpos); |
| 428 | 4860 } |
| 4861 | |
| 4862 /* If there is propagation data, then it represents the current | |
| 4187 | 4863 buffer position being displayed. Add them and advance the |
| 4864 position counter. This might also add the minibuffer | |
| 4865 prompt. */ | |
| 428 | 4866 else if (*prop) |
| 4867 { | |
| 4868 dl->used_prop_data = 1; | |
| 4869 *prop = add_propagation_runes (prop, &data); | |
| 4870 | |
| 4871 if (*prop) | |
| 4872 goto done; /* gee, a really narrow window */ | |
| 826 | 4873 else if (data.byte_charpos == byte_string_zv) |
| 428 | 4874 goto done; |
| 826 | 4875 else if (data.byte_charpos < 0) |
| 428 | 4876 /* #### urk urk urk! Aborts are not very fun! Fix this please! */ |
| 826 | 4877 data.byte_charpos = 0; |
| 428 | 4878 else |
| 826 | 4879 INC_BYTECOUNT (XSTRING_DATA (disp_string), data.byte_charpos); |
| 428 | 4880 } |
| 4881 | |
| 4882 /* If there are end glyphs, add them to the line. These are | |
| 4883 the end glyphs for the previous run of text. We add them | |
| 4884 here rather than doing them at the end of handling the | |
| 4885 previous run so that glyphs at the beginning and end of | |
| 4886 a line are handled correctly. */ | |
| 4887 else if (Dynarr_length (data.ef->end_glyphs) > 0) | |
| 4888 { | |
| 867 | 4889 data.ch = string_ichar (disp_string, data.byte_charpos); |
| 428 | 4890 *prop = add_glyph_runes (&data, END_GLYPHS); |
| 819 | 4891 |
| 4892 if (*prop) { | |
| 428 | 4893 goto done; |
| 819 | 4894 } |
| 428 | 4895 } |
| 4896 | |
| 4897 /* If there are begin glyphs, add them to the line. */ | |
| 4898 else if (Dynarr_length (data.ef->begin_glyphs) > 0) | |
| 4899 { | |
| 867 | 4900 data.ch = string_ichar (disp_string, data.byte_charpos); |
| 428 | 4901 *prop = add_glyph_runes (&data, BEGIN_GLYPHS); |
| 819 | 4902 |
| 4903 if (*prop) { | |
| 428 | 4904 goto done; |
| 819 | 4905 } |
| 428 | 4906 } |
| 4907 | |
| 4908 /* If at end-of-buffer, we've already processed begin and | |
| 4909 end-glyphs at this point and there's no text to process, | |
| 4910 so we're done. */ | |
| 826 | 4911 else if (data.byte_charpos == byte_string_zv) |
| 428 | 4912 goto done; |
| 4913 | |
| 4914 else | |
| 4915 { | |
| 4916 Lisp_Object entry = Qnil; | |
| 4917 /* Get the character at the current buffer position. */ | |
| 867 | 4918 data.ch = string_ichar (disp_string, data.byte_charpos); |
| 428 | 4919 if (!NILP (face_dt) || !NILP (window_dt)) |
| 4920 entry = display_table_entry (data.ch, face_dt, window_dt); | |
| 4921 | |
| 4922 /* If there is a display table entry for it, hand it off to | |
| 4187 | 4923 add_disp_table_entry_runes and let it worry about it. */ |
| 428 | 4924 if (!NILP (entry) && !EQ (entry, make_char (data.ch))) |
| 4925 { | |
| 4926 *prop = add_disp_table_entry_runes (&data, entry); | |
| 4927 | |
| 4928 if (*prop) | |
| 4929 goto done; | |
| 4930 } | |
| 4931 | |
| 4932 /* Check if we have hit a newline character. If so, add a marker | |
| 4187 | 4933 to the line and end this loop. */ |
| 428 | 4934 else if (data.ch == '\n') |
| 4935 { | |
| 4936 /* We aren't going to be adding an end glyph so give its | |
| 4187 | 4937 space back in order to make sure that the cursor can |
| 4938 fit. */ | |
| 819 | 4939 data.max_pixpos += data.end_glyph_width; |
| 428 | 4940 goto done; |
| 4941 } | |
| 4942 | |
| 4943 /* If the current character is considered to be printable, then | |
| 4187 | 4944 just add it. */ |
| 428 | 4945 else if (data.ch >= printable_min) |
| 4946 { | |
| 867 | 4947 *prop = add_ichar_rune (&data); |
| 428 | 4948 if (*prop) |
| 4949 goto done; | |
| 4950 } | |
| 4951 | |
| 4952 /* If the current character is a tab, determine the next tab | |
| 4187 | 4953 starting position and add a blank rune which extends from the |
| 4954 current pixel position to that starting position. */ | |
| 428 | 4955 else if (data.ch == '\t') |
| 4956 { | |
| 4957 int tab_start_pixpos = data.pixpos; | |
| 4958 int next_tab_start; | |
| 4959 int char_tab_width; | |
| 4960 int prop_width = 0; | |
| 4961 | |
| 4962 if (data.start_col > 1) | |
| 4963 tab_start_pixpos -= (space_width (w) * (data.start_col - 1)); | |
| 4964 | |
| 4965 next_tab_start = | |
| 4966 next_tab_position (w, tab_start_pixpos, | |
| 4967 dl->bounds.left_in + | |
| 4968 data.hscroll_glyph_width_adjust); | |
| 4969 if (next_tab_start > data.max_pixpos) | |
| 4970 { | |
| 4971 prop_width = next_tab_start - data.max_pixpos; | |
| 4972 next_tab_start = data.max_pixpos; | |
| 4973 } | |
| 4974 data.blank_width = next_tab_start - data.pixpos; | |
| 4975 char_tab_width = | |
| 4976 (next_tab_start - tab_start_pixpos) / space_width (w); | |
| 4977 | |
| 4978 *prop = add_blank_rune (&data, w, char_tab_width); | |
| 4979 | |
| 4980 /* add_blank_rune is only supposed to be called with | |
| 819 | 4981 sizes guaranteed to fit in the available space. */ |
| 428 | 4982 assert (!(*prop)); |
| 4983 | |
| 4984 if (prop_width) | |
| 4985 { | |
| 4986 struct prop_block pb; | |
| 4987 *prop = Dynarr_new (prop_block); | |
| 4988 | |
| 4989 pb.type = PROP_BLANK; | |
| 4990 pb.data.p_blank.width = prop_width; | |
| 4991 pb.data.p_blank.findex = data.findex; | |
| 4992 Dynarr_add (*prop, pb); | |
| 4993 | |
| 4994 goto done; | |
| 4995 } | |
| 4996 } | |
| 4997 | |
| 4998 /* If character is a control character, pass it off to | |
| 4187 | 4999 add_control_char_runes. |
| 428 | 5000 |
| 5001 The is_*() routines have undefined results on | |
| 5002 arguments outside of the range [-1, 255]. (This | |
| 5003 often bites people who carelessly use `char' instead | |
| 5004 of `unsigned char'.) | |
| 5005 */ | |
| 867 | 5006 else if (data.ch < 0x100 && iscntrl ((Ibyte) data.ch)) |
| 428 | 5007 { |
| 5008 *prop = add_control_char_runes (&data, b); | |
| 5009 | |
| 5010 if (*prop) | |
| 5011 goto done; | |
| 5012 } | |
| 5013 | |
| 5014 /* If the character is above the ASCII range and we have not | |
| 4187 | 5015 already handled it, then print it as an octal number. */ |
| 428 | 5016 else if (data.ch >= 0200) |
| 5017 { | |
| 5018 *prop = add_octal_runes (&data); | |
| 5019 | |
| 5020 if (*prop) | |
| 5021 goto done; | |
| 5022 } | |
| 5023 | |
| 5024 /* Assume the current character is considered to be printable, | |
| 4187 | 5025 then just add it. */ |
| 428 | 5026 else |
| 5027 { | |
| 867 | 5028 *prop = add_ichar_rune (&data); |
| 428 | 5029 if (*prop) |
| 5030 goto done; | |
| 5031 } | |
| 5032 | |
| 826 | 5033 INC_BYTECOUNT (XSTRING_DATA (disp_string), data.byte_charpos); |
| 428 | 5034 } |
| 5035 } | |
| 5036 | |
| 819 | 5037 done: |
| 428 | 5038 |
| 5039 /* Determine the starting point of the next line if we did not hit the | |
| 5040 end of the buffer. */ | |
| 826 | 5041 if (data.byte_charpos < byte_string_zv) |
| 428 | 5042 { |
| 5043 /* #### This check is not correct. If the line terminated | |
| 5044 due to a begin-glyph or end-glyph hitting window-end, then | |
| 826 | 5045 data.ch will not point to the character at data.byte_charpos. If |
| 428 | 5046 you make the two changes mentioned at the top of this loop, |
| 5047 you should be able to say '(if (*prop))'. That should also | |
| 826 | 5048 make it possible to eliminate the data.byte_charpos < BYTE_BUF_ZV (b) |
| 428 | 5049 check. */ |
| 5050 | |
| 5051 /* The common case is that the line ended because we hit a newline. | |
| 4187 | 5052 In that case, the next character is just the next buffer |
| 5053 position. */ | |
| 428 | 5054 if (data.ch == '\n') |
| 5055 { | |
| 826 | 5056 INC_BYTECOUNT (XSTRING_DATA (disp_string), data.byte_charpos); |
| 428 | 5057 } |
| 5058 | |
| 5059 /* Otherwise we have a buffer line which cannot fit on one display | |
| 4187 | 5060 line. */ |
| 428 | 5061 else |
| 5062 { | |
| 5063 struct glyph_block gb; | |
| 5064 struct glyph_cachel *cachel; | |
| 5065 | |
| 5066 /* If the line is to be truncated then we actually have to look | |
| 4187 | 5067 for the next newline. We also add the end-of-line glyph which |
| 5068 we know will fit because we adjusted the right border before | |
| 5069 we starting laying out the line. */ | |
| 819 | 5070 data.max_pixpos += data.end_glyph_width; |
| 428 | 5071 data.findex = default_face; |
| 5072 gb.extent = Qnil; | |
| 5073 | |
| 5074 if (truncate_win) | |
| 5075 { | |
| 826 | 5076 Bytecount byte_pos; |
| 428 | 5077 |
| 5078 /* Now find the start of the next line. */ | |
| 867 | 5079 byte_pos = byte_find_next_ichar_in_string (disp_string, '\n', |
| 826 | 5080 data.byte_charpos, 1); |
| 428 | 5081 |
| 5082 data.cursor_type = NO_CURSOR; | |
| 826 | 5083 data.byte_charpos = byte_pos; |
| 428 | 5084 gb.glyph = Vtruncation_glyph; |
| 5085 cachel = GLYPH_CACHEL (w, TRUN_GLYPH_INDEX); | |
| 5086 } | |
| 5087 else | |
| 5088 { | |
| 5089 /* The cursor can never be on the continuation glyph. */ | |
| 5090 data.cursor_type = NO_CURSOR; | |
| 5091 | |
| 826 | 5092 /* data.byte_charpos is already at the start of the next line. */ |
| 428 | 5093 |
| 442 | 5094 dl->line_continuation = 1; |
| 428 | 5095 gb.glyph = Vcontinuation_glyph; |
| 5096 cachel = GLYPH_CACHEL (w, CONT_GLYPH_INDEX); | |
| 5097 } | |
| 5098 | |
| 819 | 5099 if (data.end_glyph_width) |
| 428 | 5100 add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0, cachel); |
| 5101 | |
| 826 | 5102 if (truncate_win && data.byte_charpos == byte_string_zv) |
| 428 | 5103 { |
| 867 | 5104 const Ibyte *endb = itext_n_addr (XSTRING_DATA (disp_string), |
| 826 | 5105 byte_string_zv); |
| 867 | 5106 DEC_IBYTEPTR (endb); |
| 5107 if (itext_ichar (endb) != '\n') | |
| 428 | 5108 { |
| 5109 /* #### Damn this losing shit. */ | |
| 826 | 5110 data.byte_charpos++; |
| 428 | 5111 } |
| 5112 } | |
| 5113 } | |
| 5114 } | |
| 826 | 5115 else if (data.byte_charpos == byte_string_zv) |
| 428 | 5116 { |
| 5117 /* create_text_block () adds a bogus \n marker here which screws | |
| 5118 up subwindow display. Since we never have a cursor in the | |
| 5119 gutter we can safely ignore it. */ | |
| 5120 } | |
| 5121 /* Calculate left whitespace boundary. */ | |
| 5122 { | |
| 5123 int elt = 0; | |
| 5124 | |
| 5125 /* Whitespace past a newline is considered right whitespace. */ | |
| 5126 while (elt < Dynarr_length (db->runes)) | |
| 5127 { | |
| 5128 struct rune *rb = Dynarr_atp (db->runes, elt); | |
| 5129 | |
| 5130 if ((rb->type == RUNE_CHAR && rb->object.chr.ch == ' ') | |
| 5131 || rb->type == RUNE_BLANK) | |
| 5132 { | |
| 5133 dl->bounds.left_white += rb->width; | |
| 5134 elt++; | |
| 5135 } | |
| 5136 else | |
| 5137 elt = Dynarr_length (db->runes); | |
| 5138 } | |
| 5139 } | |
| 5140 | |
| 5141 /* Calculate right whitespace boundary. */ | |
| 5142 { | |
| 5143 int elt = Dynarr_length (db->runes) - 1; | |
| 5144 int done = 0; | |
| 5145 | |
| 5146 while (!done && elt >= 0) | |
| 5147 { | |
| 5148 struct rune *rb = Dynarr_atp (db->runes, elt); | |
| 5149 | |
| 5150 if (!(rb->type == RUNE_CHAR && rb->object.chr.ch < 0x100 | |
| 5151 && isspace (rb->object.chr.ch)) | |
| 5152 && !rb->type == RUNE_BLANK) | |
| 5153 { | |
| 5154 dl->bounds.right_white = rb->xpos + rb->width; | |
| 5155 done = 1; | |
| 5156 } | |
| 5157 | |
| 5158 elt--; | |
| 5159 | |
| 5160 } | |
| 5161 | |
| 5162 /* The line is blank so everything is considered to be right | |
| 5163 whitespace. */ | |
| 5164 if (!done) | |
| 5165 dl->bounds.right_white = dl->bounds.left_in; | |
| 5166 } | |
| 5167 | |
| 5168 /* Set the display blocks bounds. */ | |
| 5169 db->start_pos = dl->bounds.left_in; | |
| 5170 if (Dynarr_length (db->runes)) | |
| 5171 { | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
5172 struct rune *rb = Dynarr_lastp (db->runes); |
| 428 | 5173 |
| 5174 db->end_pos = rb->xpos + rb->width; | |
| 5175 } | |
| 5176 else | |
| 5177 db->end_pos = dl->bounds.right_white; | |
| 5178 | |
| 819 | 5179 calculate_baseline (&data); |
| 428 | 5180 |
| 5181 dl->ascent = data.new_ascent; | |
| 5182 dl->descent = data.new_descent; | |
| 5183 | |
| 5184 { | |
| 5185 unsigned short ascent = (unsigned short) XINT (w->minimum_line_ascent); | |
| 5186 | |
| 5187 if (dl->ascent < ascent) | |
| 5188 dl->ascent = ascent; | |
| 5189 } | |
| 5190 { | |
| 5191 unsigned short descent = (unsigned short) XINT (w->minimum_line_descent); | |
| 5192 | |
| 5193 if (dl->descent < descent) | |
| 5194 dl->descent = descent; | |
| 5195 } | |
| 5196 | |
| 819 | 5197 calculate_yoffset (dl, db); |
| 5198 | |
| 428 | 5199 dl->cursor_elt = data.cursor_x; |
| 5200 /* #### lossage lossage lossage! Fix this shit! */ | |
| 826 | 5201 if (data.byte_charpos > byte_string_zv) |
| 5202 dl->end_charpos = buffer_or_string_bytexpos_to_charxpos (disp_string, | |
| 5203 byte_string_zv); | |
| 428 | 5204 else |
| 826 | 5205 dl->end_charpos = |
| 5206 buffer_or_string_bytexpos_to_charxpos (disp_string, | |
| 5207 data.byte_charpos) - 1; | |
| 428 | 5208 if (truncate_win) |
| 434 | 5209 data.dl->num_chars = |
| 826 | 5210 string_column_at_point (disp_string, dl->end_charpos, |
| 793 | 5211 b ? XINT (b->tab_width) : 8); |
| 428 | 5212 else |
| 5213 /* This doesn't correctly take into account tabs and control | |
| 5214 characters but if the window isn't being truncated then this | |
| 5215 value isn't going to end up being used anyhow. */ | |
| 826 | 5216 data.dl->num_chars = dl->end_charpos - dl->charpos; |
| 428 | 5217 |
| 5218 /* #### handle horizontally scrolled line with text none of which | |
| 5219 was actually laid out. */ | |
| 5220 | |
| 5221 /* #### handle any remainder of overlay arrow */ | |
| 5222 | |
| 5223 if (*prop == ADD_FAILED) | |
| 5224 *prop = NULL; | |
| 5225 | |
| 5226 if (truncate_win && *prop) | |
| 5227 { | |
| 5228 Dynarr_free (*prop); | |
| 5229 *prop = NULL; | |
| 5230 } | |
| 5231 | |
| 5232 extent_fragment_delete (data.ef); | |
| 5233 | |
| 5234 /* #### If we started at EOB, then make sure we return a value past | |
| 5235 it so that regenerate_window will exit properly. This is bogus. | |
| 5236 The main loop should get fixed so that it isn't necessary to call | |
| 5237 this function if we are already at EOB. */ | |
| 5238 | |
| 826 | 5239 if (data.byte_charpos == byte_string_zv && byte_start_pos == byte_string_zv) |
| 793 | 5240 return string_index_byte_to_char (disp_string, |
| 826 | 5241 data.byte_charpos) + 1; /* Yuck! */ |
| 428 | 5242 else |
| 826 | 5243 return string_index_byte_to_char (disp_string, data.byte_charpos); |
| 428 | 5244 } |
| 5245 | |
| 5246 /* Given a display line and a starting position, ensure that the | |
| 5247 contents of the display line accurately represent the visual | |
| 5248 representation of the buffer contents starting from the given | |
| 5249 position when displayed in the given window. The display line ends | |
| 5250 when the contents of the line reach the right boundary of the given | |
| 434 | 5251 window. |
| 5252 | |
| 428 | 5253 This is very similar to generate_display_line but with the same |
| 5254 limitations as create_string_text_block. I have taken the liberty | |
| 665 | 5255 of fixing the bytebpos stuff though.*/ |
| 5256 | |
| 5257 static Charbpos | |
| 428 | 5258 generate_string_display_line (struct window *w, Lisp_Object disp_string, |
| 5259 struct display_line *dl, | |
| 826 | 5260 Charcount start_pos, |
| 428 | 5261 prop_block_dynarr **prop, |
| 5262 face_index default_face) | |
| 5263 { | |
| 826 | 5264 Charcount ret_charcount; |
| 428 | 5265 |
| 5266 /* you must set bounds before calling this. */ | |
| 434 | 5267 |
| 428 | 5268 /* Reset what this line is using. */ |
| 5269 if (dl->display_blocks) | |
| 5270 Dynarr_reset (dl->display_blocks); | |
| 5271 if (dl->left_glyphs) | |
| 5272 { | |
| 5273 Dynarr_free (dl->left_glyphs); | |
| 5274 dl->left_glyphs = 0; | |
| 5275 } | |
| 5276 if (dl->right_glyphs) | |
| 5277 { | |
| 5278 Dynarr_free (dl->right_glyphs); | |
| 5279 dl->right_glyphs = 0; | |
| 5280 } | |
| 5281 | |
| 5282 /* We aren't generating a modeline at the moment. */ | |
| 5283 dl->modeline = 0; | |
| 5284 | |
| 5285 /* Create a display block for the text region of the line. */ | |
| 826 | 5286 ret_charcount = create_string_text_block (w, disp_string, dl, start_pos, |
| 5287 prop, default_face); | |
| 5288 dl->charpos = start_pos; | |
| 5289 if (dl->end_charpos < dl->charpos) | |
| 5290 dl->end_charpos = dl->charpos; | |
| 428 | 5291 |
| 5292 /* If there are left glyphs associated with any character in the | |
| 5293 text block, then create a display block to handle them. */ | |
| 5294 if (dl->left_glyphs != NULL && Dynarr_length (dl->left_glyphs)) | |
| 5295 create_left_glyph_block (w, dl, 0); | |
| 5296 | |
| 5297 /* If there are right glyphs associated with any character in the | |
| 5298 text block, then create a display block to handle them. */ | |
| 5299 if (dl->right_glyphs != NULL && Dynarr_length (dl->right_glyphs)) | |
| 5300 create_right_glyph_block (w, dl); | |
| 5301 | |
| 826 | 5302 return ret_charcount; |
| 428 | 5303 } |
| 5304 | |
| 2518 | 5305 /* |
| 5306 | |
| 5038 | 5307 Info on reentrancy crashes, with backtraces given: |
| 5308 | |
| 5309 (Info-goto-node "(internals)Critical Redisplay Sections") | |
| 5310 | |
| 1318 | 5311 */ |
| 5312 | |
| 5313 | |
| 428 | 5314 /* This is ripped off from regenerate_window. All we want to do is |
| 5315 loop through elements in the string creating display lines until we | |
| 5316 have covered the provided area. Simple really. */ | |
| 5317 void | |
| 5318 generate_displayable_area (struct window *w, Lisp_Object disp_string, | |
| 5319 int xpos, int ypos, int width, int height, | |
| 5320 display_line_dynarr* dla, | |
| 826 | 5321 Charcount start_pos, |
| 428 | 5322 face_index default_face) |
| 5323 { | |
| 5324 int yend = ypos + height; | |
| 5325 Charcount s_zv; | |
| 5326 prop_block_dynarr *prop = 0; | |
| 5327 layout_bounds bounds; | |
| 2518 | 5328 int depth = -1; |
| 5329 | |
| 428 | 5330 /* if there's nothing to do then do nothing. code after this assumes |
| 5331 there is something to do. */ | |
| 5332 if (NILP (disp_string)) | |
| 5333 return; | |
| 5334 | |
| 2518 | 5335 /* See comment in regenerate_window() */ |
| 5336 if (!in_display) | |
| 5337 depth = enter_redisplay_critical_section (); | |
| 5338 | |
| 5339 assert (dla); | |
| 5340 Dynarr_reset (dla); | |
| 5341 | |
| 826 | 5342 s_zv = string_char_length (disp_string); |
| 428 | 5343 |
| 5344 bounds.left_out = xpos; | |
| 5345 bounds.right_out = xpos + width; | |
| 5346 /* The inner boundaries mark where the glyph margins are located. */ | |
| 5347 bounds.left_in = bounds.left_out + window_left_margin_width (w); | |
| 5348 bounds.right_in = bounds.right_out - window_right_margin_width (w); | |
| 5349 /* We cannot fully calculate the whitespace boundaries as they | |
| 5350 depend on the contents of the line being displayed. */ | |
| 5351 bounds.left_white = bounds.left_in; | |
| 5352 bounds.right_white = bounds.right_in; | |
| 5353 | |
| 5354 while (ypos < yend) | |
| 5355 { | |
| 5356 struct display_line dl; | |
| 5357 struct display_line *dlp; | |
| 826 | 5358 Charcount next_pos; |
| 428 | 5359 int local; |
| 851 | 5360 int pos_of_dlp = -1; |
| 428 | 5361 |
| 5362 if (Dynarr_length (dla) < Dynarr_largest (dla)) | |
| 5363 { | |
| 851 | 5364 pos_of_dlp = Dynarr_length (dla); |
| 5365 dlp = Dynarr_atp (dla, pos_of_dlp); | |
| 428 | 5366 local = 0; |
| 5367 } | |
| 5368 else | |
| 5369 { | |
| 4207 | 5370 DISPLAY_LINE_INIT (dl); |
| 428 | 5371 dlp = &dl; |
| 5372 local = 1; | |
| 5373 } | |
| 5374 | |
| 5375 dlp->bounds = bounds; | |
| 5376 dlp->offset = 0; | |
| 1318 | 5377 Dynarr_lock (dla); |
| 428 | 5378 next_pos = generate_string_display_line (w, disp_string, dlp, start_pos, |
| 5379 &prop, default_face); | |
| 1318 | 5380 Dynarr_unlock (dla); |
| 428 | 5381 /* we need to make sure that we continue along the line if there |
| 4187 | 5382 is more left to display otherwise we just end up redisplaying |
| 5383 the same chunk over and over again. */ | |
| 428 | 5384 if (next_pos == start_pos && next_pos < s_zv) |
| 5385 start_pos++; | |
| 5386 else | |
| 5387 start_pos = next_pos; | |
| 5388 | |
| 5389 dlp->ypos = ypos + dlp->ascent; | |
| 5390 ypos = dlp->ypos + dlp->descent; | |
| 5391 | |
| 5392 if (ypos > yend) | |
| 5393 { | |
| 5394 int visible_height = dlp->ascent + dlp->descent; | |
| 5395 | |
| 5396 dlp->clip = (ypos - yend); | |
| 5397 visible_height -= dlp->clip; | |
| 5398 | |
| 5399 if (visible_height < VERTICAL_CLIP (w, 1)) | |
| 5400 { | |
| 5401 if (local) | |
| 5402 free_display_line (dlp); | |
| 5403 break; | |
| 5404 } | |
| 5405 } | |
| 5406 else | |
| 5407 dlp->clip = 0; | |
| 5408 | |
|
4418
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5409 if (pos_of_dlp < 0) |
|
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5410 Dynarr_add (dla, *dlp); |
|
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5411 else if (pos_of_dlp == Dynarr_length (dla)) |
| 5038 | 5412 Dynarr_incrementr (dla); |
|
4418
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5413 else |
|
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5414 ABORT (); |
| 428 | 5415 |
| 5416 /* #### This type of check needs to be done down in the | |
| 5417 generate_display_line call. */ | |
| 5418 if (start_pos >= s_zv) | |
| 5419 break; | |
| 5420 } | |
| 5421 | |
| 5422 if (prop) | |
| 5423 Dynarr_free (prop); | |
| 2518 | 5424 |
| 5425 if (depth >= 0) | |
| 5426 exit_redisplay_critical_section (depth); | |
| 428 | 5427 } |
| 5428 | |
| 5429 | |
| 5430 /***************************************************************************/ | |
| 5431 /* */ | |
| 5432 /* window-regeneration routines */ | |
| 5433 /* */ | |
| 5434 /***************************************************************************/ | |
| 5435 | |
| 5436 /* For a given window and starting position in the buffer it contains, | |
| 5437 ensure that the TYPE display lines accurately represent the | |
| 5438 presentation of the window. We pass the buffer instead of getting | |
| 5439 it from the window since redisplay_window may have temporarily | |
| 5440 changed it to the echo area buffer. */ | |
| 5441 | |
| 5442 static void | |
| 2518 | 5443 regenerate_window (struct window *w, Charbpos start_pos, Charbpos point, |
| 5444 int type) | |
| 428 | 5445 { |
| 5446 struct frame *f = XFRAME (w->frame); | |
| 5447 struct buffer *b = XBUFFER (w->buffer); | |
| 5448 int ypos = WINDOW_TEXT_TOP (w); | |
| 5449 int yend; /* set farther down */ | |
| 5450 int yclip = WINDOW_TEXT_TOP_CLIP (w); | |
| 442 | 5451 int force; |
| 2518 | 5452 int depth = -1; |
| 428 | 5453 |
| 5454 prop_block_dynarr *prop; | |
| 5455 layout_bounds bounds; | |
| 5456 display_line_dynarr *dla; | |
| 5457 int need_modeline; | |
| 5458 | |
| 5459 /* The lines had better exist by this point. */ | |
| 5460 if (!(dla = window_display_lines (w, type))) | |
| 2500 | 5461 ABORT (); |
| 2518 | 5462 |
| 5463 if (!in_display) | |
| 5464 depth = enter_redisplay_critical_section (); | |
| 5465 | |
| 5038 | 5466 /* This is one spot where a reentrancy crash will occur, due to a check |
| 2518 | 5467 in the dynarr to make sure it isn't "locked" */ |
| 5468 /* | |
| 5469 | |
| 5038 | 5470 Info on reentrancy crashes, with backtraces given: |
| 5471 | |
| 5472 (Info-goto-node "(internals)Critical Redisplay Sections") | |
| 2518 | 5473 */ |
| 5474 | |
| 428 | 5475 Dynarr_reset (dla); |
| 5476 w->max_line_len = 0; | |
| 5477 | |
| 4968 | 5478 /* Added 2-1-10 -- we should never have empty face or glyph cachels |
| 5479 because we initialized them at startup and the only way to reduce | |
| 5480 their number is through calling reset_face_cachels() or | |
| 5481 reset_glyph_cachels(), which as a side effect sets up a number of | |
| 5482 standard entries */ | |
| 5483 assert (Dynarr_length (w->face_cachels)); | |
| 5484 assert (Dynarr_length (w->glyph_cachels)); | |
| 5485 | |
| 5486 #if 0 | |
| 5487 /* #### Delete this code sometime later than 2-1-10 when we're sure it's | |
| 5488 not needed */ | |
| 428 | 5489 /* Normally these get updated in redisplay_window but it is possible |
| 5490 for this function to get called from some other points where that | |
| 5491 update may not have occurred. This acts as a safety check. */ | |
| 5492 if (!Dynarr_length (w->face_cachels)) | |
| 5493 reset_face_cachels (w); | |
| 5494 if (!Dynarr_length (w->glyph_cachels)) | |
| 5495 reset_glyph_cachels (w); | |
| 4968 | 5496 #endif |
| 428 | 5497 |
| 5498 Fset_marker (w->start[type], make_int (start_pos), w->buffer); | |
| 5499 Fset_marker (w->pointm[type], make_int (point), w->buffer); | |
| 5500 w->last_point_x[type] = -1; | |
| 5501 w->last_point_y[type] = -1; | |
| 5502 | |
| 5503 /* Make sure a modeline is in the structs if needed. */ | |
| 5504 need_modeline = ensure_modeline_generated (w, type); | |
| 5505 | |
| 5506 /* Wait until here to set this so that the structs have a modeline | |
| 5507 generated in the case where one didn't exist. */ | |
| 5508 yend = WINDOW_TEXT_BOTTOM (w); | |
| 5509 | |
| 5510 bounds = calculate_display_line_boundaries (w, 0); | |
| 5511 | |
| 5512 /* 97/3/14 jhod: stuff added here to support pre-prompts (used for input systems) */ | |
| 5513 if (MINI_WINDOW_P (w) | |
| 5514 && (!NILP (Vminibuf_prompt) || !NILP (Vminibuf_preprompt)) | |
| 5515 && !echo_area_active (f) | |
| 5516 && start_pos == BUF_BEGV (b)) | |
| 5517 { | |
| 5518 struct prop_block pb; | |
| 5519 Lisp_Object string; | |
| 5520 prop = Dynarr_new (prop_block); | |
| 5521 | |
| 5198 | 5522 string = concat2 (Vminibuf_preprompt, Vminibuf_prompt); |
| 428 | 5523 pb.type = PROP_MINIBUF_PROMPT; |
| 5198 | 5524 pb.data.p_string.str = XSTRING_DATA (string); |
| 5525 pb.data.p_string.len = XSTRING_LENGTH (string); | |
| 428 | 5526 Dynarr_add (prop, pb); |
| 5527 } | |
| 5528 else | |
| 5529 prop = 0; | |
| 5530 | |
| 442 | 5531 /* When we are computing things for scrolling purposes, make |
| 5532 sure at least one line is always generated */ | |
| 5533 force = (type == CMOTION_DISP); | |
| 5534 | |
| 5535 /* Make sure this is set always */ | |
| 5536 /* Note the conversion at end */ | |
| 5537 w->window_end_pos[type] = start_pos; | |
| 5538 while (ypos < yend || force) | |
| 428 | 5539 { |
| 5540 struct display_line dl; | |
| 5541 struct display_line *dlp; | |
| 5542 int local; | |
| 851 | 5543 int pos_of_dlp = -1; |
| 428 | 5544 |
| 5545 if (Dynarr_length (dla) < Dynarr_largest (dla)) | |
| 5546 { | |
| 851 | 5547 pos_of_dlp = Dynarr_length (dla); |
| 5548 dlp = Dynarr_atp (dla, pos_of_dlp); | |
| 428 | 5549 local = 0; |
| 5550 } | |
| 5551 else | |
| 5552 { | |
| 4207 | 5553 DISPLAY_LINE_INIT (dl); |
| 428 | 5554 dlp = &dl; |
| 5555 local = 1; | |
| 5556 } | |
| 5557 | |
| 5558 dlp->bounds = bounds; | |
| 5559 dlp->offset = 0; | |
| 1318 | 5560 Dynarr_lock (dla); |
| 428 | 5561 start_pos = generate_display_line (w, dlp, 1, start_pos, &prop, type); |
| 1318 | 5562 Dynarr_unlock (dla); |
| 428 | 5563 |
| 5564 if (yclip > dlp->ascent) | |
| 5565 { | |
| 5566 /* this should never happen, but if it does just display the | |
| 5567 whole line */ | |
| 5568 yclip = 0; | |
| 5569 } | |
| 5570 | |
| 5571 dlp->ypos = (ypos + dlp->ascent) - yclip; | |
| 5572 ypos = dlp->ypos + dlp->descent; | |
| 5573 | |
| 5574 /* See if we've been asked to start midway through a line, for | |
| 4187 | 5575 partial display line scrolling. */ |
| 434 | 5576 if (yclip) |
| 428 | 5577 { |
| 5578 dlp->top_clip = yclip; | |
| 5579 yclip = 0; | |
| 5580 } | |
| 5581 else | |
| 5582 dlp->top_clip = 0; | |
| 5583 | |
| 5584 if (ypos > yend) | |
| 5585 { | |
| 5586 int visible_height = dlp->ascent + dlp->descent; | |
| 5587 | |
| 5588 dlp->clip = (ypos - yend); | |
| 5589 /* Although this seems strange we could have a single very | |
| 5590 tall line visible for which we need to account for both | |
| 5591 the top clip and the bottom clip. */ | |
| 5592 visible_height -= (dlp->clip + dlp->top_clip); | |
| 5593 | |
| 442 | 5594 if (visible_height < VERTICAL_CLIP (w, 1) && !force) |
| 428 | 5595 { |
| 5596 if (local) | |
| 5597 free_display_line (dlp); | |
| 5598 break; | |
| 5599 } | |
| 5600 } | |
| 5601 else | |
| 5602 dlp->clip = 0; | |
| 5603 | |
| 5604 if (dlp->cursor_elt != -1) | |
| 5605 { | |
| 5606 /* #### This check is steaming crap. Have to get things | |
| 4187 | 5607 fixed so when create_text_block hits EOB, we're done, |
| 5608 period. */ | |
| 428 | 5609 if (w->last_point_x[type] == -1) |
| 5610 { | |
| 5611 w->last_point_x[type] = dlp->cursor_elt; | |
| 5612 w->last_point_y[type] = Dynarr_length (dla); | |
| 5613 } | |
| 5614 else | |
| 5615 { | |
| 5616 /* #### This means that we've added a cursor at EOB | |
| 4187 | 5617 twice. Yuck oh yuck. */ |
| 1318 | 5618 struct display_block *db; |
| 5619 | |
| 5620 Dynarr_lock (dla); | |
| 5621 db = get_display_block_from_line (dlp, TEXT); | |
| 5622 Dynarr_unlock (dla); | |
| 428 | 5623 |
| 5624 Dynarr_atp (db->runes, dlp->cursor_elt)->cursor_type = NO_CURSOR; | |
| 5625 dlp->cursor_elt = -1; | |
| 5626 } | |
| 5627 } | |
| 5628 | |
| 5629 if (dlp->num_chars > w->max_line_len) | |
| 5630 w->max_line_len = dlp->num_chars; | |
| 5631 | |
|
4418
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5632 if (pos_of_dlp < 0) |
|
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5633 Dynarr_add (dla, *dlp); |
|
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5634 else if (pos_of_dlp == Dynarr_length (dla)) |
| 5038 | 5635 Dynarr_incrementr (dla); |
|
4418
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5636 else |
|
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5637 ABORT (); |
| 428 | 5638 |
| 5639 /* #### This isn't right, but it is close enough for now. */ | |
| 5640 w->window_end_pos[type] = start_pos; | |
| 5641 | |
| 5642 /* #### This type of check needs to be done down in the | |
| 5643 generate_display_line call. */ | |
| 5644 if (start_pos > BUF_ZV (b)) | |
| 5645 break; | |
| 442 | 5646 |
| 5647 force = 0; | |
| 428 | 5648 } |
| 5649 | |
| 5650 if (prop) | |
| 5651 Dynarr_free (prop); | |
| 5652 | |
| 5653 /* #### More not quite right, but close enough. */ | |
| 442 | 5654 /* Ben sez: apparently window_end_pos[] is measured |
| 428 | 5655 as the number of characters between the window end and the |
| 5656 end of the buffer? This seems rather weirdo. What's | |
| 442 | 5657 the justification for this? |
| 5658 | |
| 5659 JV sez: Because BUF_Z (b) would be a good initial value, however | |
| 5660 that can change. This representation allows initalizing with 0. | |
| 5661 */ | |
| 428 | 5662 w->window_end_pos[type] = BUF_Z (b) - w->window_end_pos[type]; |
| 5663 | |
| 5664 if (need_modeline) | |
| 5665 { | |
| 5666 /* We know that this is the right thing to use because we put it | |
| 4187 | 5667 there when we first started working in this function. */ |
| 4967 | 5668 generate_modeline (w, Dynarr_begin (dla), type); |
| 428 | 5669 } |
| 2518 | 5670 |
| 5671 if (depth >= 0) | |
| 5672 exit_redisplay_critical_section (depth); | |
| 428 | 5673 } |
| 5674 | |
| 826 | 5675 #define REGEN_INC_FIND_START_END \ |
| 5676 do { \ | |
| 5677 /* Determine start and end of lines. */ \ | |
| 5678 if (!Dynarr_length (cdla)) \ | |
| 5679 return 0; \ | |
| 5680 else \ | |
| 5681 { \ | |
| 4967 | 5682 if (Dynarr_begin (cdla)->modeline && Dynarr_begin (ddla)->modeline) \ |
| 826 | 5683 { \ |
| 5684 dla_start = 1; \ | |
| 5685 } \ | |
| 4967 | 5686 else if (!Dynarr_begin (cdla)->modeline \ |
| 5687 && !Dynarr_begin (ddla)->modeline) \ | |
| 826 | 5688 { \ |
| 5689 dla_start = 0; \ | |
| 5690 } \ | |
| 5691 else \ | |
| 2500 | 5692 ABORT (); /* structs differ */ \ |
| 826 | 5693 \ |
| 5694 dla_end = Dynarr_length (cdla) - 1; \ | |
| 5695 } \ | |
| 5696 \ | |
| 5697 start_pos = (Dynarr_atp (cdla, dla_start)->charpos \ | |
| 5698 + Dynarr_atp (cdla, dla_start)->offset); \ | |
| 5699 /* If this isn't true, then startp has changed and we need to do a \ | |
| 5700 full regen. */ \ | |
| 5701 if (startp != start_pos) \ | |
| 5702 return 0; \ | |
| 5703 \ | |
| 5704 /* Point is outside the visible region so give up. */ \ | |
| 5705 if (pointm < start_pos) \ | |
| 5706 return 0; \ | |
| 5707 \ | |
| 428 | 5708 } while (0) |
| 5709 | |
| 5710 /* This attempts to incrementally update the display structures. It | |
| 5711 returns a boolean indicating success or failure. This function is | |
| 5712 very similar to regenerate_window_incrementally and is in fact only | |
| 5713 called from that function. However, because of the nature of the | |
| 5714 changes it deals with it sometimes makes different assumptions | |
| 5715 which can lead to success which are much more difficult to make | |
| 5716 when dealing with buffer changes. */ | |
| 5717 | |
| 5718 static int | |
| 665 | 5719 regenerate_window_extents_only_changed (struct window *w, Charbpos startp, |
| 5720 Charbpos pointm, | |
| 428 | 5721 Charcount beg_unchanged, |
| 5722 Charcount end_unchanged) | |
| 5723 { | |
| 5724 struct buffer *b = XBUFFER (w->buffer); | |
| 5725 display_line_dynarr *cdla = window_display_lines (w, CURRENT_DISP); | |
| 5726 display_line_dynarr *ddla = window_display_lines (w, DESIRED_DISP); | |
| 5727 | |
| 5728 int dla_start = 0; | |
| 5729 int dla_end, line; | |
| 5730 int first_line, last_line; | |
| 665 | 5731 Charbpos start_pos; |
| 428 | 5732 /* Don't define this in the loop where it is used because we |
| 5733 definitely want its value to survive between passes. */ | |
| 5734 prop_block_dynarr *prop = NULL; | |
| 5735 | |
| 5736 /* If we don't have any buffer change recorded but the modiff flag has | |
| 5737 been incremented, then fail. I'm not sure of the exact circumstances | |
| 5738 under which this can happen, but I believe that it is probably a | |
| 5739 reasonable happening. */ | |
| 5740 if (!point_visible (w, pointm, CURRENT_DISP) | |
| 5741 || XINT (w->last_modified[CURRENT_DISP]) < BUF_MODIFF (b)) | |
| 5742 return 0; | |
| 5743 | |
| 5744 /* If the cursor is moved we attempt to update it. If we succeed we | |
| 5745 go ahead and proceed with the optimization attempt. */ | |
| 5746 if (!EQ (Fmarker_buffer (w->last_point[CURRENT_DISP]), w->buffer) | |
| 5747 || pointm != marker_position (w->last_point[CURRENT_DISP])) | |
| 5748 { | |
| 5749 struct frame *f = XFRAME (w->frame); | |
| 5750 struct device *d = XDEVICE (f->device); | |
| 5751 struct frame *sel_f = device_selected_frame (d); | |
| 5752 int success = 0; | |
| 5753 | |
| 5754 if (w->last_point_x[CURRENT_DISP] != -1 | |
| 5755 && w->last_point_y[CURRENT_DISP] != -1) | |
| 5756 { | |
| 5757 | |
| 5758 if (redisplay_move_cursor (w, pointm, WINDOW_TTY_P (w))) | |
| 5759 { | |
| 5760 /* Always regenerate the modeline in case it is | |
| 4187 | 5761 displaying the current line or column. */ |
| 428 | 5762 regenerate_modeline (w); |
| 5763 success = 1; | |
| 5764 } | |
| 5765 } | |
| 5766 else if (w != XWINDOW (FRAME_SELECTED_WINDOW (sel_f))) | |
| 5767 { | |
| 5768 if (f->modeline_changed) | |
| 5769 regenerate_modeline (w); | |
| 5770 success = 1; | |
| 5771 } | |
| 5772 | |
| 5773 if (!success) | |
| 5774 return 0; | |
| 5775 } | |
| 5776 | |
| 5777 if (beg_unchanged == -1 && end_unchanged == -1) | |
| 5778 return 1; | |
| 5779 | |
| 5780 /* assert: There are no buffer modifications or they are all below the | |
| 5781 visible region. We assume that regenerate_window_incrementally has | |
| 5782 not called us unless this is true. */ | |
| 5783 | |
| 5784 REGEN_INC_FIND_START_END; | |
| 5785 | |
| 5786 /* If the changed are starts before the visible area, give up. */ | |
| 5787 if (beg_unchanged < startp) | |
| 5788 return 0; | |
| 5789 | |
| 5790 /* Find what display line the extent changes first affect. */ | |
| 5791 line = dla_start; | |
| 5792 while (line <= dla_end) | |
| 5793 { | |
| 5794 struct display_line *dl = Dynarr_atp (cdla, line); | |
| 826 | 5795 Charbpos lstart = dl->charpos + dl->offset; |
| 5796 Charbpos lend = dl->end_charpos + dl->offset; | |
| 428 | 5797 |
| 5798 if (beg_unchanged >= lstart && beg_unchanged <= lend) | |
| 5799 break; | |
| 5800 | |
| 5801 line++; | |
| 5802 } | |
| 5803 | |
| 5804 /* If the changes are below the visible area then if point hasn't | |
| 5805 moved return success otherwise fail in order to be safe. */ | |
| 5806 if (line > dla_end) | |
| 5807 { | |
| 5808 if (EQ (Fmarker_buffer (w->last_point[CURRENT_DISP]), w->buffer) | |
| 5809 && pointm == marker_position (w->last_point[CURRENT_DISP])) | |
| 5810 return 1; | |
| 5811 else | |
| 5812 return 0; | |
| 5813 } | |
| 5814 | |
| 5815 /* At this point we know what line the changes first affect. We now | |
| 5816 begin redrawing lines as long as we are still in the affected | |
| 5817 region and the line's size and positioning don't change. | |
| 5818 Otherwise we fail. If we fail we will have altered the desired | |
| 5819 structs which could lead to an assertion failure. However, if we | |
| 5820 fail the next thing that is going to happen is a full regen so we | |
| 5821 will actually end up being safe. */ | |
| 5822 w->last_modified[DESIRED_DISP] = make_int (BUF_MODIFF (b)); | |
| 5823 w->last_facechange[DESIRED_DISP] = make_int (BUF_FACECHANGE (b)); | |
| 5824 Fset_marker (w->last_start[DESIRED_DISP], make_int (startp), w->buffer); | |
| 5825 Fset_marker (w->last_point[DESIRED_DISP], make_int (pointm), w->buffer); | |
| 5826 | |
| 5827 first_line = last_line = line; | |
| 5828 while (line <= dla_end) | |
| 5829 { | |
| 2286 | 5830 Charbpos old_start, old_end; |
| 428 | 5831 struct display_line *cdl = Dynarr_atp (cdla, line); |
| 5832 struct display_line *ddl = Dynarr_atp (ddla, line); | |
| 5833 struct display_block *db; | |
| 5834 int initial_size; | |
| 5835 | |
| 826 | 5836 assert (cdl->charpos == ddl->charpos); |
| 5837 assert (cdl->end_charpos == ddl->end_charpos); | |
| 428 | 5838 assert (cdl->offset == ddl->offset); |
| 5839 | |
| 5840 db = get_display_block_from_line (ddl, TEXT); | |
| 5841 initial_size = Dynarr_length (db->runes); | |
| 826 | 5842 old_start = ddl->charpos + ddl->offset; |
| 5843 old_end = ddl->end_charpos + ddl->offset; | |
| 428 | 5844 |
| 5845 /* If this is the first line being updated and it used | |
| 4187 | 5846 propagation data, fail. Otherwise we'll be okay because |
| 5847 we'll have the necessary propagation data. */ | |
| 428 | 5848 if (line == first_line && ddl->used_prop_data) |
| 5849 return 0; | |
| 5850 | |
| 2286 | 5851 generate_display_line (w, ddl, 0, ddl->charpos + ddl->offset, |
| 5852 &prop, DESIRED_DISP); | |
| 428 | 5853 ddl->offset = 0; |
| 5854 | |
| 5855 /* #### If there is propagated stuff the fail. We could | |
| 4187 | 5856 probably actually deal with this if the line had propagated |
| 5857 information when originally created by a full | |
| 5858 regeneration. */ | |
| 428 | 5859 if (prop) |
| 5860 { | |
| 5861 Dynarr_free (prop); | |
| 5862 return 0; | |
| 5863 } | |
| 5864 | |
| 5865 /* If any line position parameters have changed or a | |
| 4187 | 5866 cursor has disappeared or disappeared, fail. */ |
| 428 | 5867 db = get_display_block_from_line (ddl, TEXT); |
| 5868 if (cdl->ypos != ddl->ypos | |
| 5869 || cdl->ascent != ddl->ascent | |
| 5870 || cdl->descent != ddl->descent | |
| 5871 || cdl->top_clip != ddl->top_clip | |
| 5872 || (cdl->cursor_elt != -1 && ddl->cursor_elt == -1) | |
| 5873 || (cdl->cursor_elt == -1 && ddl->cursor_elt != -1) | |
| 826 | 5874 || old_start != ddl->charpos |
| 5875 || old_end != ddl->end_charpos | |
| 428 | 5876 || initial_size != Dynarr_length (db->runes)) |
| 5877 { | |
| 5878 return 0; | |
| 5879 } | |
| 5880 | |
| 5881 if (ddl->cursor_elt != -1) | |
| 5882 { | |
| 5883 w->last_point_x[DESIRED_DISP] = ddl->cursor_elt; | |
| 5884 w->last_point_y[DESIRED_DISP] = line; | |
| 5885 } | |
| 5886 | |
| 5887 last_line = line; | |
| 5888 | |
| 5889 /* If the extent changes end on the line we just updated then | |
| 4187 | 5890 we're done. Otherwise go on to the next line. */ |
| 826 | 5891 if (end_unchanged <= ddl->end_charpos) |
| 428 | 5892 break; |
| 5893 else | |
| 5894 line++; | |
| 5895 } | |
| 5896 | |
| 5897 redisplay_update_line (w, first_line, last_line, 1); | |
| 5898 return 1; | |
| 5899 } | |
| 5900 | |
| 5901 /* Attempt to update the display data structures based on knowledge of | |
| 5902 the changed region in the buffer. Returns a boolean indicating | |
| 5903 success or failure. If this function returns a failure then a | |
| 5904 regenerate_window _must_ be performed next in order to maintain | |
| 5905 invariants located here. */ | |
| 5906 | |
| 5907 static int | |
| 665 | 5908 regenerate_window_incrementally (struct window *w, Charbpos startp, |
| 5909 Charbpos pointm) | |
| 428 | 5910 { |
| 5911 struct buffer *b = XBUFFER (w->buffer); | |
| 5912 display_line_dynarr *cdla = window_display_lines (w, CURRENT_DISP); | |
| 5913 display_line_dynarr *ddla = window_display_lines (w, DESIRED_DISP); | |
| 5914 Charcount beg_unchanged, end_unchanged; | |
| 5915 Charcount extent_beg_unchanged, extent_end_unchanged; | |
| 5916 | |
| 5917 int dla_start = 0; | |
| 5918 int dla_end, line; | |
| 665 | 5919 Charbpos start_pos; |
| 428 | 5920 |
| 5921 /* If this function is called, the current and desired structures | |
| 5922 had better be identical. If they are not, then that is a bug. */ | |
| 5923 assert (Dynarr_length (cdla) == Dynarr_length (ddla)); | |
| 5924 | |
| 5925 /* We don't handle minibuffer windows yet. The minibuffer prompt | |
| 5926 screws us up. */ | |
| 5927 if (MINI_WINDOW_P (w)) | |
| 5928 return 0; | |
| 5929 | |
| 5930 extent_beg_unchanged = BUF_EXTENT_BEGIN_UNCHANGED (b); | |
| 5931 extent_end_unchanged = (BUF_EXTENT_END_UNCHANGED (b) == -1 | |
| 5932 ? -1 | |
| 5933 : BUF_Z (b) - BUF_EXTENT_END_UNCHANGED (b)); | |
| 5934 | |
| 5935 /* If nothing has changed in the buffer, then make sure point is ok | |
| 5936 and succeed. */ | |
| 5937 if (BUF_BEGIN_UNCHANGED (b) == -1 && BUF_END_UNCHANGED (b) == -1) | |
| 5938 return regenerate_window_extents_only_changed (w, startp, pointm, | |
| 5939 extent_beg_unchanged, | |
| 5940 extent_end_unchanged); | |
| 5941 | |
| 5942 /* We can't deal with deleted newlines. */ | |
| 5943 if (BUF_NEWLINE_WAS_DELETED (b)) | |
| 5944 return 0; | |
| 5945 | |
| 5946 beg_unchanged = BUF_BEGIN_UNCHANGED (b); | |
| 5947 end_unchanged = (BUF_END_UNCHANGED (b) == -1 | |
| 5948 ? -1 | |
| 5949 : BUF_Z (b) - BUF_END_UNCHANGED (b)); | |
| 5950 | |
| 5951 REGEN_INC_FIND_START_END; | |
| 5952 | |
| 5953 /* If the changed area starts before the visible area, give up. */ | |
| 5954 if (beg_unchanged < startp) | |
| 5955 return 0; | |
| 5956 | |
| 5957 /* Find what display line the buffer changes first affect. */ | |
| 5958 line = dla_start; | |
| 5959 while (line <= dla_end) | |
| 5960 { | |
| 5961 struct display_line *dl = Dynarr_atp (cdla, line); | |
| 826 | 5962 Charbpos lstart = dl->charpos + dl->offset; |
| 5963 Charbpos lend = dl->end_charpos + dl->offset; | |
| 428 | 5964 |
| 5965 if (beg_unchanged >= lstart && beg_unchanged <= lend) | |
| 5966 break; | |
| 5967 | |
| 5968 line++; | |
| 5969 } | |
| 5970 | |
| 5971 /* If the changes are below the visible area then if point hasn't | |
| 5972 moved return success otherwise fail in order to be safe. */ | |
| 5973 if (line > dla_end) | |
| 5974 return regenerate_window_extents_only_changed (w, startp, pointm, | |
| 5975 extent_beg_unchanged, | |
| 5976 extent_end_unchanged); | |
| 5977 else | |
| 5978 /* At this point we know what line the changes first affect. We | |
| 5979 now redraw that line. If the changes are contained within it | |
| 5980 we are going to succeed and can update just that one line. | |
| 5981 Otherwise we fail. If we fail we will have altered the desired | |
| 5982 structs which could lead to an assertion failure. However, if | |
| 5983 we fail the next thing that is going to happen is a full regen | |
| 5984 so we will actually end up being safe. */ | |
| 5985 { | |
| 5986 prop_block_dynarr *prop = NULL; | |
| 5987 struct display_line *cdl = Dynarr_atp (cdla, line); | |
| 5988 struct display_line *ddl = Dynarr_atp (ddla, line); | |
| 5989 | |
| 826 | 5990 assert (cdl->charpos == ddl->charpos); |
| 5991 assert (cdl->end_charpos == ddl->end_charpos); | |
| 428 | 5992 assert (cdl->offset == ddl->offset); |
| 5993 | |
| 442 | 5994 /* If the line continues to next display line, fail. */ |
| 5995 if (ddl->line_continuation) | |
| 5996 return 0; | |
| 428 | 5997 |
| 5998 /* If the line was generated using propagation data, fail. */ | |
| 5999 if (ddl->used_prop_data) | |
| 6000 return 0; | |
| 6001 | |
| 2286 | 6002 generate_display_line (w, ddl, 0, ddl->charpos + ddl->offset, |
| 6003 &prop, DESIRED_DISP); | |
| 428 | 6004 ddl->offset = 0; |
| 6005 | |
| 6006 /* If there is propagated stuff then it is pretty much a | |
| 4187 | 6007 guarantee that more than just the one line is affected. */ |
| 428 | 6008 if (prop) |
| 6009 { | |
| 6010 Dynarr_free (prop); | |
| 6011 return 0; | |
| 6012 } | |
| 6013 | |
| 442 | 6014 /* If the line continues to next display line, fail. */ |
| 6015 if (ddl->line_continuation) | |
| 6016 return 0; | |
| 428 | 6017 |
| 6018 /* If any line position parameters have changed or a | |
| 4187 | 6019 cursor has disappeared or disappeared, fail. */ |
| 428 | 6020 if (cdl->ypos != ddl->ypos |
| 6021 || cdl->ascent != ddl->ascent | |
| 6022 || cdl->descent != ddl->descent | |
| 6023 || cdl->top_clip != ddl->top_clip | |
| 6024 || (cdl->cursor_elt != -1 && ddl->cursor_elt == -1) | |
| 6025 || (cdl->cursor_elt == -1 && ddl->cursor_elt != -1)) | |
| 6026 { | |
| 6027 return 0; | |
| 6028 } | |
| 6029 | |
| 6030 /* If the changed area also ends on this line, then we may be in | |
| 4187 | 6031 business. Update everything and return success. */ |
| 826 | 6032 if (end_unchanged >= ddl->charpos && end_unchanged <= ddl->end_charpos) |
| 428 | 6033 { |
| 6034 w->last_modified[DESIRED_DISP] = make_int (BUF_MODIFF (b)); | |
| 6035 w->last_facechange[DESIRED_DISP] = make_int (BUF_FACECHANGE (b)); | |
| 6036 Fset_marker (w->last_start[DESIRED_DISP], make_int (startp), | |
| 6037 w->buffer); | |
| 6038 Fset_marker (w->last_point[DESIRED_DISP], make_int (pointm), | |
| 6039 w->buffer); | |
| 6040 | |
| 6041 if (ddl->cursor_elt != -1) | |
| 6042 { | |
| 6043 w->last_point_x[DESIRED_DISP] = ddl->cursor_elt; | |
| 6044 w->last_point_y[DESIRED_DISP] = line; | |
| 6045 } | |
| 6046 | |
| 6047 redisplay_update_line (w, line, line, 1); | |
| 6048 regenerate_modeline (w); | |
| 6049 | |
| 6050 /* #### For now we just flush the cache until this has been | |
| 4187 | 6051 tested. After that is done, this should correct the |
| 6052 cache directly. */ | |
| 428 | 6053 Dynarr_reset (w->line_start_cache); |
| 6054 | |
| 6055 /* Adjust the extent changed boundaries to remove any | |
| 4187 | 6056 overlap with the buffer changes since we've just |
| 6057 successfully updated that area. */ | |
| 428 | 6058 if (extent_beg_unchanged != -1 |
| 6059 && extent_beg_unchanged >= beg_unchanged | |
| 6060 && extent_beg_unchanged < end_unchanged) | |
| 6061 extent_beg_unchanged = end_unchanged; | |
| 6062 | |
| 6063 if (extent_end_unchanged != -1 | |
| 6064 && extent_end_unchanged >= beg_unchanged | |
| 6065 && extent_end_unchanged < end_unchanged) | |
| 6066 extent_end_unchanged = beg_unchanged - 1; | |
| 6067 | |
| 6068 if (extent_end_unchanged <= extent_beg_unchanged) | |
| 6069 extent_beg_unchanged = extent_end_unchanged = -1; | |
| 6070 | |
| 6071 /* This could lead to odd results if it fails, but since the | |
| 4187 | 6072 buffer changes update succeeded this probably will to. |
| 6073 We already know that the extent changes start at or after | |
| 6074 the line because we checked before entering the loop. */ | |
| 428 | 6075 if (extent_beg_unchanged != -1 |
| 6076 && extent_end_unchanged != -1 | |
| 826 | 6077 && ((extent_beg_unchanged < ddl->charpos) |
| 6078 || (extent_end_unchanged > ddl->end_charpos))) | |
| 428 | 6079 return regenerate_window_extents_only_changed (w, startp, pointm, |
| 6080 extent_beg_unchanged, | |
| 6081 extent_end_unchanged); | |
| 6082 else | |
| 6083 return 1; | |
| 6084 } | |
| 6085 } | |
| 6086 | |
| 6087 /* Oh, well. */ | |
| 6088 return 0; | |
| 6089 } | |
| 6090 | |
| 6091 /* Given a window and a point, update the given display lines such | |
| 6092 that point is displayed in the middle of the window. | |
| 6093 Return the window's new start position. */ | |
| 6094 | |
| 665 | 6095 static Charbpos |
| 6096 regenerate_window_point_center (struct window *w, Charbpos point, int type) | |
| 428 | 6097 { |
| 665 | 6098 Charbpos startp; |
| 428 | 6099 |
| 6100 /* We need to make sure that the modeline is generated so that the | |
| 6101 window height can be calculated correctly. */ | |
| 6102 ensure_modeline_generated (w, type); | |
| 6103 | |
| 6104 startp = start_with_line_at_pixpos (w, point, window_half_pixpos (w)); | |
| 6105 regenerate_window (w, startp, point, type); | |
| 6106 Fset_marker (w->start[type], make_int (startp), w->buffer); | |
| 6107 | |
| 6108 return startp; | |
| 6109 } | |
| 6110 | |
| 6111 /* Given a window and a set of display lines, return a boolean | |
| 6112 indicating whether the given point is contained within. */ | |
| 6113 | |
| 6114 static int | |
| 665 | 6115 point_visible (struct window *w, Charbpos point, int type) |
| 428 | 6116 { |
| 6117 struct buffer *b = XBUFFER (w->buffer); | |
| 6118 display_line_dynarr *dla = window_display_lines (w, type); | |
| 6119 int first_line; | |
| 6120 | |
| 4967 | 6121 if (Dynarr_length (dla) && Dynarr_begin (dla)->modeline) |
| 428 | 6122 first_line = 1; |
| 6123 else | |
| 6124 first_line = 0; | |
| 6125 | |
| 6126 if (Dynarr_length (dla) > first_line) | |
| 6127 { | |
| 665 | 6128 Charbpos start, end; |
| 428 | 6129 struct display_line *dl = Dynarr_atp (dla, first_line); |
| 6130 | |
| 826 | 6131 start = dl->charpos; |
| 428 | 6132 end = BUF_Z (b) - w->window_end_pos[type] - 1; |
| 6133 | |
| 6134 if (point >= start && point <= end) | |
| 6135 { | |
| 6136 if (!MINI_WINDOW_P (w) && scroll_on_clipped_lines) | |
| 6137 { | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
6138 dl = Dynarr_lastp (dla); |
| 428 | 6139 |
| 826 | 6140 if (point >= (dl->charpos + dl->offset) |
| 6141 && point <= (dl->end_charpos + dl->offset)) | |
| 428 | 6142 return !dl->clip; |
| 6143 else | |
| 6144 return 1; | |
| 6145 } | |
| 6146 else | |
| 6147 return 1; | |
| 6148 } | |
| 6149 else | |
| 6150 return 0; | |
| 6151 } | |
| 6152 else | |
| 6153 return 0; | |
| 6154 } | |
| 6155 | |
| 6156 /* Return pixel position the middle of the window, not including the | |
| 6157 modeline and any potential horizontal scrollbar. */ | |
| 6158 | |
| 6159 int | |
| 6160 window_half_pixpos (struct window *w) | |
| 6161 { | |
| 6162 return WINDOW_TEXT_TOP (w) + (WINDOW_TEXT_HEIGHT (w) >> 1); | |
| 6163 } | |
| 6164 | |
| 6165 /* Return the display line which is currently in the middle of the | |
| 6166 window W for display lines TYPE. */ | |
| 6167 | |
| 6168 int | |
| 665 | 6169 line_at_center (struct window *w, int type, Charbpos start, Charbpos point) |
| 428 | 6170 { |
| 6171 display_line_dynarr *dla; | |
| 6172 int half; | |
| 6173 int elt; | |
| 6174 int first_elt = (MINI_WINDOW_P (w) ? 0 : 1); | |
| 6175 | |
| 6176 if (type == CMOTION_DISP) | |
| 6177 regenerate_window (w, start, point, type); | |
| 6178 | |
| 6179 dla = window_display_lines (w, type); | |
| 6180 half = window_half_pixpos (w); | |
| 6181 | |
| 6182 for (elt = first_elt; elt < Dynarr_length (dla); elt++) | |
| 6183 { | |
| 6184 struct display_line *dl = Dynarr_atp (dla, elt); | |
| 6185 int line_bot = dl->ypos + dl->descent; | |
| 6186 | |
| 6187 if (line_bot > half) | |
| 6188 return elt; | |
| 6189 } | |
| 6190 | |
| 6191 /* We may not have a line at the middle if the end of the buffer is | |
| 6192 being displayed. */ | |
| 6193 return -1; | |
| 6194 } | |
| 6195 | |
| 6196 /* Return a value for point that would place it at the beginning of | |
| 6197 the line which is in the middle of the window. */ | |
| 6198 | |
| 665 | 6199 Charbpos |
| 6200 point_at_center (struct window *w, int type, Charbpos start, Charbpos point) | |
| 428 | 6201 { |
| 6202 /* line_at_center will regenerate the display structures, if necessary. */ | |
| 6203 int line = line_at_center (w, type, start, point); | |
| 6204 | |
| 6205 if (line == -1) | |
| 6206 return BUF_ZV (XBUFFER (w->buffer)); | |
| 6207 else | |
| 6208 { | |
| 6209 display_line_dynarr *dla = window_display_lines (w, type); | |
| 6210 struct display_line *dl = Dynarr_atp (dla, line); | |
| 6211 | |
| 826 | 6212 return dl->charpos; |
| 428 | 6213 } |
| 6214 } | |
| 6215 | |
| 6216 /* For a given window, ensure that the current visual representation | |
| 6217 is accurate. */ | |
| 6218 | |
| 6219 static void | |
| 6220 redisplay_window (Lisp_Object window, int skip_selected) | |
| 6221 { | |
| 6222 struct window *w = XWINDOW (window); | |
| 6223 struct frame *f = XFRAME (w->frame); | |
| 6224 struct device *d = XDEVICE (f->device); | |
| 6225 Lisp_Object old_buffer = w->buffer; | |
| 6226 Lisp_Object the_buffer = w->buffer; | |
| 6227 struct buffer *b; | |
| 6228 int echo_active = 0; | |
| 6229 int startp = 1; | |
| 6230 int pointm; | |
| 6231 int old_startp = 1; | |
| 6232 int old_pointm = 1; | |
| 6233 int selected_in_its_frame; | |
| 6234 int selected_globally; | |
| 6235 int skip_output = 0; | |
| 6236 int truncation_changed; | |
| 6237 int inactive_minibuffer = | |
| 6238 (MINI_WINDOW_P (w) && | |
| 6239 (f != device_selected_frame (d)) && | |
| 6240 !is_surrogate_for_selected_frame (f)); | |
| 6241 | |
| 6242 /* #### In the new world this function actually does a bunch of | |
| 6243 optimizations such as buffer-based scrolling, but none of that is | |
| 6244 implemented yet. */ | |
| 6245 | |
| 6246 /* If this is a combination window, do its children; that's all. | |
| 6247 The selected window is always a leaf so we don't check for | |
| 6248 skip_selected here. */ | |
| 6249 if (!NILP (w->vchild)) | |
| 6250 { | |
| 6251 redisplay_windows (w->vchild, skip_selected); | |
| 6252 return; | |
| 6253 } | |
| 6254 if (!NILP (w->hchild)) | |
| 6255 { | |
| 6256 redisplay_windows (w->hchild, skip_selected); | |
| 6257 return; | |
| 6258 } | |
| 6259 | |
| 6260 /* Is this window the selected window on its frame? */ | |
| 6261 selected_in_its_frame = (w == XWINDOW (FRAME_SELECTED_WINDOW (f))); | |
| 6262 selected_globally = | |
| 6263 selected_in_its_frame && | |
| 5198 | 6264 EQ (DEVICE_CONSOLE (d), Vselected_console) && |
| 6265 XDEVICE (CONSOLE_SELECTED_DEVICE (XCONSOLE (DEVICE_CONSOLE (d)))) == d && | |
| 6266 XFRAME (DEVICE_SELECTED_FRAME (d)) == f; | |
| 428 | 6267 if (skip_selected && selected_in_its_frame) |
| 6268 return; | |
| 6269 | |
| 6270 /* It is possible that the window is not fully initialized yet. */ | |
| 6271 if (NILP (w->buffer)) | |
| 6272 return; | |
| 6273 | |
| 6274 if (MINI_WINDOW_P (w) && echo_area_active (f)) | |
| 6275 { | |
| 6276 w->buffer = the_buffer = Vecho_area_buffer; | |
| 6277 echo_active = 1; | |
| 6278 } | |
| 6279 | |
| 6280 b = XBUFFER (w->buffer); | |
| 6281 | |
| 6282 if (echo_active) | |
| 6283 { | |
| 6284 old_pointm = selected_globally | |
| 4187 | 6285 ? BUF_PT (b) |
| 6286 : marker_position (w->pointm[CURRENT_DISP]); | |
| 428 | 6287 pointm = 1; |
| 6288 } | |
| 6289 else | |
| 6290 { | |
| 6291 if (selected_globally) | |
| 6292 { | |
| 6293 pointm = BUF_PT (b); | |
| 6294 } | |
| 6295 else | |
| 6296 { | |
| 6297 pointm = marker_position (w->pointm[CURRENT_DISP]); | |
| 6298 | |
| 6299 if (pointm < BUF_BEGV (b)) | |
| 6300 pointm = BUF_BEGV (b); | |
| 6301 else if (pointm > BUF_ZV (b)) | |
| 6302 pointm = BUF_ZV (b); | |
| 6303 } | |
| 6304 } | |
| 6305 Fset_marker (w->pointm[DESIRED_DISP], make_int (pointm), the_buffer); | |
| 6306 | |
| 4968 | 6307 /* Added 2-1-10 -- we should never have empty face or glyph cachels |
| 6308 because we initialized them at startup and the only way to reduce | |
| 6309 their number is through calling reset_face_cachels() or | |
| 6310 reset_glyph_cachels(), which as a side effect sets up a number of | |
| 6311 standard entries */ | |
| 6312 assert (Dynarr_length (w->face_cachels)); | |
| 6313 assert (Dynarr_length (w->glyph_cachels)); | |
| 6314 | |
| 428 | 6315 /* If the buffer has changed we have to invalidate all of our face |
| 6316 cache elements. */ | |
| 6317 if ((!echo_active && b != window_display_buffer (w)) | |
| 4968 | 6318 #if 0 |
| 6319 /* #### Delete this code sometime later than 2-1-10 when we're sure it's | |
| 6320 not needed */ | |
| 428 | 6321 || !Dynarr_length (w->face_cachels) |
| 4968 | 6322 #endif |
| 428 | 6323 || f->faces_changed) |
| 6324 reset_face_cachels (w); | |
| 6325 else | |
| 6326 mark_face_cachels_as_not_updated (w); | |
| 6327 | |
| 6328 /* Ditto the glyph cache elements, although we do *not* invalidate | |
| 6329 the cache purely because glyphs have changed - this is now | |
| 6330 handled by the dirty flag.*/ | |
| 6331 if ((!echo_active && b != window_display_buffer (w)) | |
| 4968 | 6332 #if 0 |
| 6333 /* #### Delete this code sometime later than 2-1-10 when we're sure it's | |
| 6334 not needed */ | |
| 6335 || !Dynarr_length (w->glyph_cachels) | |
| 6336 #endif | |
| 6337 || f->faces_changed) | |
| 428 | 6338 reset_glyph_cachels (w); |
| 6339 else | |
| 6340 mark_glyph_cachels_as_not_updated (w); | |
| 6341 | |
| 6342 /* If the marker's buffer is not the window's buffer, then we need | |
| 6343 to find a new starting position. */ | |
| 6344 if (!MINI_WINDOW_P (w) | |
| 6345 && !EQ (Fmarker_buffer (w->start[CURRENT_DISP]), w->buffer)) | |
| 6346 { | |
| 6347 startp = regenerate_window_point_center (w, pointm, DESIRED_DISP); | |
| 6348 | |
| 6349 goto regeneration_done; | |
| 6350 } | |
| 6351 | |
| 6352 if (echo_active) | |
| 6353 { | |
| 6354 old_startp = marker_position (w->start[CURRENT_DISP]); | |
| 6355 startp = 1; | |
| 6356 } | |
| 6357 else | |
| 6358 { | |
| 6359 startp = marker_position (w->start[CURRENT_DISP]); | |
| 6360 if (startp < BUF_BEGV (b)) | |
| 6361 startp = BUF_BEGV (b); | |
| 6362 else if (startp > BUF_ZV (b)) | |
| 6363 startp = BUF_ZV (b); | |
| 6364 } | |
| 6365 Fset_marker (w->start[DESIRED_DISP], make_int (startp), the_buffer); | |
| 6366 | |
| 6367 truncation_changed = (find_window_mirror (w)->truncate_win != | |
| 647 | 6368 (unsigned int) window_truncation_on (w)); |
| 428 | 6369 |
| 6370 /* If w->force_start is set, then some function set w->start and we | |
| 6371 should display from there and change point, if necessary, to | |
| 6372 ensure that it is visible. */ | |
| 6373 if (w->force_start || inactive_minibuffer) | |
| 6374 { | |
| 6375 w->force_start = 0; | |
| 6376 w->last_modified[DESIRED_DISP] = Qzero; | |
| 6377 w->last_facechange[DESIRED_DISP] = Qzero; | |
| 6378 | |
| 6379 regenerate_window (w, startp, pointm, DESIRED_DISP); | |
| 6380 | |
| 6381 if (!point_visible (w, pointm, DESIRED_DISP) && !inactive_minibuffer) | |
| 6382 { | |
| 6383 pointm = point_at_center (w, DESIRED_DISP, 0, 0); | |
| 6384 | |
| 6385 if (selected_globally) | |
| 6386 BUF_SET_PT (b, pointm); | |
| 6387 | |
| 6388 Fset_marker (w->pointm[DESIRED_DISP], make_int (pointm), | |
| 6389 the_buffer); | |
| 6390 | |
| 6391 /* #### BUFU amounts of overkill just to get the cursor | |
| 4187 | 6392 location marked properly. FIX ME FIX ME FIX ME */ |
| 428 | 6393 regenerate_window (w, startp, pointm, DESIRED_DISP); |
| 6394 } | |
| 6395 | |
| 6396 goto regeneration_done; | |
| 6397 } | |
| 6398 | |
| 6399 /* If nothing has changed since the last redisplay, then we just | |
| 6400 need to make sure that point is still visible. */ | |
| 6401 if (XINT (w->last_modified[CURRENT_DISP]) >= BUF_MODIFF (b) | |
| 6402 && XINT (w->last_facechange[CURRENT_DISP]) >= BUF_FACECHANGE (b) | |
| 6403 && pointm >= startp | |
| 6404 /* This check is to make sure we restore the minibuffer after a | |
| 4187 | 6405 temporary change to the echo area. */ |
| 428 | 6406 && !(MINI_WINDOW_P (w) && f->buffers_changed) |
| 6407 && !f->frame_changed | |
| 6408 && !truncation_changed | |
| 442 | 6409 /* check whether start is really at the beginning of a line GE */ |
| 428 | 6410 && (!w->start_at_line_beg || beginning_of_line_p (b, startp)) |
| 6411 ) | |
| 6412 { | |
| 6413 /* Check if the cursor has actually moved. */ | |
| 6414 if (EQ (Fmarker_buffer (w->last_point[CURRENT_DISP]), w->buffer) | |
| 6415 && pointm == marker_position (w->last_point[CURRENT_DISP]) | |
| 6416 && selected_globally | |
| 6417 && !w->windows_changed | |
| 6418 && !f->clip_changed | |
| 6419 && !f->extents_changed | |
| 6420 && !f->faces_changed | |
| 6421 && !f->glyphs_changed | |
| 6422 && !f->subwindows_changed | |
| 442 | 6423 /* && !f->subwindows_state_changed*/ |
| 428 | 6424 && !f->point_changed |
| 6425 && !f->windows_structure_changed) | |
| 6426 { | |
| 6427 /* If not, we're done. */ | |
| 6428 if (f->modeline_changed) | |
| 6429 regenerate_modeline (w); | |
| 6430 | |
| 6431 skip_output = 1; | |
| 6432 goto regeneration_done; | |
| 6433 } | |
| 6434 else | |
| 6435 { | |
| 6436 /* If the new point is visible in the redisplay structures, | |
| 4187 | 6437 then let the output update routines handle it, otherwise |
| 6438 do things the hard way. */ | |
| 428 | 6439 if (!w->windows_changed |
| 6440 && !f->clip_changed | |
| 6441 && !f->extents_changed | |
| 6442 && !f->faces_changed | |
| 6443 && !f->glyphs_changed | |
| 6444 && !f->subwindows_changed | |
| 442 | 6445 /* && !f->subwindows_state_changed*/ |
| 428 | 6446 && !f->windows_structure_changed) |
| 6447 { | |
| 6448 if (point_visible (w, pointm, CURRENT_DISP) | |
| 6449 && w->last_point_x[CURRENT_DISP] != -1 | |
| 6450 && w->last_point_y[CURRENT_DISP] != -1) | |
| 6451 { | |
| 6452 if (redisplay_move_cursor (w, pointm, FRAME_TTY_P (f))) | |
| 6453 { | |
| 6454 /* Always regenerate in case it is displaying | |
| 4187 | 6455 the current line or column. */ |
| 428 | 6456 regenerate_modeline (w); |
| 6457 | |
| 6458 skip_output = 1; | |
| 6459 goto regeneration_done; | |
| 6460 } | |
| 6461 } | |
| 6462 else if (!selected_in_its_frame && !f->point_changed) | |
| 6463 { | |
| 6464 if (f->modeline_changed) | |
| 6465 regenerate_modeline (w); | |
| 6466 | |
| 6467 skip_output = 1; | |
| 6468 goto regeneration_done; | |
| 6469 } | |
| 6470 } | |
| 6471 | |
| 6472 /* If we weren't able to take the shortcut method, then use | |
| 4187 | 6473 the brute force method. */ |
| 428 | 6474 regenerate_window (w, startp, pointm, DESIRED_DISP); |
| 6475 | |
| 6476 if (point_visible (w, pointm, DESIRED_DISP)) | |
| 6477 goto regeneration_done; | |
| 6478 } | |
| 6479 } | |
| 6480 | |
| 6481 /* Check if the starting point is no longer at the beginning of a | |
| 6482 line, in which case find a new starting point. We also recenter | |
| 6483 if our start position is equal to point-max. Otherwise we'll end | |
| 6484 up with a blank window. */ | |
| 6485 else if (((w->start_at_line_beg || MINI_WINDOW_P (w)) | |
| 6486 && !(startp == BUF_BEGV (b) | |
| 6487 || BUF_FETCH_CHAR (b, startp - 1) == '\n')) | |
| 6488 || (pointm == startp && | |
| 6489 EQ (Fmarker_buffer (w->last_start[CURRENT_DISP]), w->buffer) && | |
| 6490 startp < marker_position (w->last_start[CURRENT_DISP])) | |
| 6491 || (startp == BUF_ZV (b))) | |
| 6492 { | |
| 6493 startp = regenerate_window_point_center (w, pointm, DESIRED_DISP); | |
| 6494 | |
| 6495 goto regeneration_done; | |
| 6496 } | |
| 6497 /* See if we can update the data structures locally based on | |
| 6498 knowledge of what changed in the buffer. */ | |
| 6499 else if (!w->windows_changed | |
| 6500 && !f->clip_changed | |
| 6501 && !f->faces_changed | |
| 6502 && !f->glyphs_changed | |
| 6503 && !f->subwindows_changed | |
| 442 | 6504 /* && !f->subwindows_state_changed*/ |
| 428 | 6505 && !f->windows_structure_changed |
| 6506 && !f->frame_changed | |
| 6507 && !truncation_changed | |
| 6508 && pointm >= startp | |
| 6509 && regenerate_window_incrementally (w, startp, pointm)) | |
| 6510 { | |
| 6511 if (f->modeline_changed | |
| 6512 || XINT (w->last_modified[CURRENT_DISP]) < BUF_MODIFF (b) | |
| 6513 || XINT (w->last_facechange[CURRENT_DISP]) < BUF_FACECHANGE (b)) | |
| 6514 regenerate_modeline (w); | |
| 6515 | |
| 6516 skip_output = 1; | |
| 6517 goto regeneration_done; | |
| 6518 } | |
| 6519 /* #### This is where a check for structure based scrolling would go. */ | |
| 6520 /* If all else fails, try just regenerating and see what happens. */ | |
| 6521 else | |
| 6522 { | |
| 6523 regenerate_window (w, startp, pointm, DESIRED_DISP); | |
| 6524 | |
| 6525 if (point_visible (w, pointm, DESIRED_DISP)) | |
| 6526 goto regeneration_done; | |
| 6527 } | |
| 6528 | |
| 6529 /* We still haven't gotten the window regenerated with point | |
| 6530 visible. Next we try scrolling a little and see if point comes | |
| 6531 back onto the screen. */ | |
| 6532 if (scroll_step > 0) | |
| 6533 { | |
| 6534 int scrolled = scroll_conservatively; | |
| 6535 for (; scrolled >= 0; scrolled -= scroll_step) | |
| 6536 { | |
| 6537 startp = vmotion (w, startp, | |
| 6538 (pointm < startp) ? -scroll_step : scroll_step, 0); | |
| 6539 regenerate_window (w, startp, pointm, DESIRED_DISP); | |
| 6540 | |
| 6541 if (point_visible (w, pointm, DESIRED_DISP)) | |
| 6542 goto regeneration_done; | |
| 6543 } | |
| 6544 } | |
| 6545 | |
| 6546 /* We still haven't managed to get the screen drawn with point on | |
| 6547 the screen, so just center it and be done with it. */ | |
| 6548 startp = regenerate_window_point_center (w, pointm, DESIRED_DISP); | |
| 6549 | |
| 6550 | |
| 6551 regeneration_done: | |
| 6552 | |
| 6553 /* If the window's frame is changed then reset the current display | |
| 6554 lines in order to force a full repaint. */ | |
| 6555 if (f->frame_changed) | |
| 6556 { | |
| 6557 display_line_dynarr *cla = window_display_lines (w, CURRENT_DISP); | |
| 6558 | |
| 6559 Dynarr_reset (cla); | |
| 6560 } | |
| 6561 | |
| 6562 /* Must do this before calling redisplay_output_window because it | |
| 6563 sets some markers on the window. */ | |
| 6564 if (echo_active) | |
| 6565 { | |
| 6566 w->buffer = old_buffer; | |
| 6567 Fset_marker (w->pointm[DESIRED_DISP], make_int (old_pointm), old_buffer); | |
| 6568 Fset_marker (w->start[DESIRED_DISP], make_int (old_startp), old_buffer); | |
| 6569 } | |
| 6570 | |
| 6571 /* These also have to be set before calling redisplay_output_window | |
| 6572 since it sets the CURRENT_DISP values based on them. */ | |
| 6573 w->last_modified[DESIRED_DISP] = make_int (BUF_MODIFF (b)); | |
| 6574 w->last_facechange[DESIRED_DISP] = make_int (BUF_FACECHANGE (b)); | |
| 6575 Fset_marker (w->last_start[DESIRED_DISP], make_int (startp), w->buffer); | |
| 6576 Fset_marker (w->last_point[DESIRED_DISP], make_int (pointm), w->buffer); | |
| 6577 | |
| 6578 if (!skip_output) | |
| 6579 { | |
| 665 | 6580 Charbpos start = marker_position (w->start[DESIRED_DISP]); |
| 6581 Charbpos end = (w->window_end_pos[DESIRED_DISP] == -1 | |
| 428 | 6582 ? BUF_ZV (b) |
| 6583 : BUF_Z (b) - w->window_end_pos[DESIRED_DISP] - 1); | |
| 6584 /* Don't pollute the cache if not sure if we are correct */ | |
| 6585 if (w->start_at_line_beg) | |
| 6586 update_line_start_cache (w, start, end, pointm, 1); | |
| 6587 redisplay_output_window (w); | |
| 6588 /* | |
| 6589 * If we just displayed the echo area, the line start cache is | |
| 6590 * no longer valid, because the minibuffer window is associated | |
| 6591 * with the window now. | |
| 6592 */ | |
| 6593 if (echo_active) | |
| 6594 w->line_cache_last_updated = make_int (-1); | |
| 6595 } | |
| 6596 | |
| 6597 /* #### This should be dependent on face changes and will need to be | |
| 6598 somewhere else once tty updates occur on a per-frame basis. */ | |
| 6599 mark_face_cachels_as_clean (w); | |
| 6600 | |
| 438 | 6601 /* The glyph cachels only get dirty if someone changed something. |
| 6602 Since redisplay has now effectively ended we can reset the dirty | |
| 6603 flag since everything must be up-to-date. */ | |
| 428 | 6604 if (glyphs_changed) |
| 6605 mark_glyph_cachels_as_clean (w); | |
| 6606 | |
| 6607 w->windows_changed = 0; | |
| 6608 } | |
| 6609 | |
| 6610 /* Call buffer_reset_changes for all buffers present in any window | |
| 6611 currently visible in all frames on all devices. #### There has to | |
| 6612 be a better way to do this. */ | |
| 6613 | |
| 6614 static int | |
| 2286 | 6615 reset_buffer_changes_mapfun (struct window *w, void *UNUSED (closure)) |
| 428 | 6616 { |
| 6617 buffer_reset_changes (XBUFFER (w->buffer)); | |
| 6618 return 0; | |
| 6619 } | |
| 6620 | |
| 6621 static void | |
| 6622 reset_buffer_changes (void) | |
| 6623 { | |
| 6624 Lisp_Object frmcons, devcons, concons; | |
| 6625 | |
| 6626 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons) | |
| 6627 { | |
| 6628 struct frame *f = XFRAME (XCAR (frmcons)); | |
| 6629 | |
| 6630 if (FRAME_REPAINT_P (f)) | |
| 6631 map_windows (f, reset_buffer_changes_mapfun, 0); | |
| 6632 } | |
| 6633 } | |
| 6634 | |
| 6635 /* Ensure that all windows underneath the given window in the window | |
| 6636 hierarchy are correctly displayed. */ | |
| 6637 | |
| 6638 static void | |
| 6639 redisplay_windows (Lisp_Object window, int skip_selected) | |
| 6640 { | |
| 6641 for (; !NILP (window) ; window = XWINDOW (window)->next) | |
| 6642 { | |
| 6643 redisplay_window (window, skip_selected); | |
| 6644 } | |
| 6645 } | |
| 6646 | |
| 1318 | 6647 /* Register an action to be called at the end of redisplay. |
| 6648 in_display is 0 when this is called. | |
| 6649 This is used when it is discovered that an action needs to be taken, | |
| 6650 but it's during redisplay, so it's not safe. (Typically, it's an action | |
| 6651 that needs to enter redisplay, which can't happen reentrantly.) | |
| 6652 | |
| 6653 NEVER signal an error in these functions. | |
| 6654 */ | |
| 6655 | |
| 6656 void | |
| 6657 register_post_redisplay_action (void (*fun) (Lisp_Object), Lisp_Object arg) | |
| 6658 { | |
| 6659 Vpost_redisplay_actions = nconc2 (Vpost_redisplay_actions, | |
| 6660 list1 (Fcons (make_opaque_ptr | |
| 6661 ((void *) fun), arg))); | |
| 6662 } | |
| 6663 | |
| 1320 | 6664 static int running_post_redisplay_actions; |
| 6665 | |
| 1318 | 6666 static void |
| 6667 run_post_redisplay_actions (void) | |
| 6668 { | |
| 1320 | 6669 int depth; |
| 6670 | |
| 6671 if (running_post_redisplay_actions) | |
| 6672 return; | |
| 6673 | |
| 6674 depth = internal_bind_int (&running_post_redisplay_actions, 1); | |
| 6675 /* If the function pushes further actions, they will be tacked onto | |
| 6676 the end of the list, and we'll run them when we're done with the | |
| 6677 current ones. */ | |
| 1318 | 6678 while (!NILP (Vpost_redisplay_actions)) |
| 6679 { | |
| 6680 Lisp_Object car = XCAR (Vpost_redisplay_actions); | |
| 6681 void (*fun) (Lisp_Object) = | |
| 6682 (void (*)(Lisp_Object)) get_opaque_ptr (XCAR (car)); | |
| 6683 (*fun) (XCDR (car)); | |
| 6684 free_opaque_ptr (XCAR (car)); | |
| 6685 free_cons (car); | |
| 6686 Vpost_redisplay_actions = XCDR (Vpost_redisplay_actions); | |
| 6687 } | |
| 1320 | 6688 unbind_to (depth); |
| 1318 | 6689 } |
| 6690 | |
| 6691 #ifdef ERROR_CHECK_TRAPPING_PROBLEMS | |
| 6692 | |
| 6693 static Lisp_Object | |
| 2286 | 6694 commit_ritual_suicide (Lisp_Object UNUSED (ceci_nest_pas_une_pipe)) |
| 1318 | 6695 { |
| 6696 assert (!in_display); | |
| 6697 return Qnil; | |
| 6698 } | |
| 6699 | |
| 6700 #endif | |
| 6701 | |
| 6702 /* Within the guts of redisplay, we are defenseless and cannot allow any of | |
| 6703 the following to happen: | |
| 6704 | |
| 6705 1) garbage collection | |
| 6706 2) QUIT | |
| 6707 3) any non-local exits | |
| 6708 4) frame size changes | |
| 6709 5) deletion of any buffers, windows, frames, etc. | |
| 6710 6) modification of buffer text | |
| 6711 7) reentrant entry of redisplay (see the stack trace above | |
| 6712 generate_displayable_area()) | |
| 6713 | |
| 6714 The general reason is that the redisplay code is written to assume that | |
| 6715 it is the only code running, and thus (a) cannot tolerate structures | |
| 6716 changed out from under it (hence 1, 4, 5, 6, 7) and (b) at various points | |
| 6717 within redisplay the redisplay structures may be in an inconsistent | |
| 6718 state and there are no unwind-protects to clean the structures up in | |
| 6719 case of non-local exit (hence 2, 3). Fixing redisplay to address these | |
| 6720 issues is hard and perhaps not worth it (and might slow things down a | |
| 6721 fair amount). We address 1, 4, 5 and 6 ourselves inside of | |
| 6722 enter_redisplay_critical_section() by simply inhibiting them, but we | |
| 6723 cannot handle 2 and 3, which must be handled at the actual point where | |
| 6724 they may occur (especially, internal_equal() or any place that may call | |
| 6725 Lisp), by wrapping the code in call_trapping_problems() or | |
| 6726 call_with_suspended_errors(). [[ NOTE: We could address QUIT by inhibiting | |
| 6727 it but this would be anti-social because it would prevent the user from | |
| 6728 interrupting any Lisp code called within the critical section. With the | |
| 6729 call_*() wrapping, C-g will interrupt the Lisp code and throw back to | |
| 6730 the innermost wrapping. ]] In fact we do turn off QUIT handling, since | |
| 6731 it's just too dangerous otherwise. See below. | |
| 6732 | |
| 6733 Code calling enter_redisplay_critical_section() must check for reentrancy | |
| 6734 (#7) and take appropriate corrective action. | |
| 6735 | |
| 6736 To help debug potential problems, we arrange (when | |
| 6737 ERROR_CHECK_TRAPPING_PROBLEMS is set) to crash automatically every time | |
| 6738 we execute QUIT or call Lisp code unless proper wrapping is in place, as | |
| 6739 well as further checks when we actually Fsignal(), Fthrow(), | |
| 6740 garbage_collect_1(). | |
| 6741 | |
| 6742 #### If a frame-size change does occur we should probably actually be | |
| 6743 preempting redisplay. */ | |
| 6744 | |
| 6745 /* Count of number of recursive times we call | |
| 6746 enter_redisplay_critical_section() or | |
| 6747 enter_redisplay_critical_section_maybe(). | |
| 6748 enter_redisplay_critical_section() cannot occur reentrantly but we have | |
| 6749 to know in the *maybe() version whether to exit the section when we're | |
| 6750 done. */ | |
| 6751 static int in_display_nesting; | |
| 6752 | |
| 6753 static Lisp_Object | |
| 2286 | 6754 end_hold_frame_size_changes (Lisp_Object UNUSED (obj)) |
| 1318 | 6755 { |
| 6756 if (!hold_frame_size_changes) | |
| 6757 { | |
| 6758 /* we used to have a function to do this for only one frame, and | |
| 6759 it was typical to call it at the end of a critical section | |
| 6760 (which occurs once per frame); but what then happens if multiple | |
| 6761 frames have frame changes held up? | |
| 4187 | 6762 |
| 1318 | 6763 This means we are O(N^2) over frames. I seriously doubt it matters. |
| 6764 --ben */ | |
| 6765 Lisp_Object frmcons, devcons, concons; | |
| 4187 | 6766 |
| 1318 | 6767 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons) |
| 6768 { | |
| 6769 struct frame *f = XFRAME (XCAR (frmcons)); | |
| 6770 if (f->size_change_pending) | |
| 5043 | 6771 change_frame_size (f, f->new_width, f->new_height, 0); |
| 1318 | 6772 } |
| 6773 } | |
| 6774 return Qnil; | |
| 6775 } | |
| 6776 | |
| 6777 /* Call this to temporarily prevent frame-size changes from being processed. | |
| 6778 To undo, use unbind_to(), passing it the value returned by this function. | |
| 6779 */ | |
| 6780 | |
| 6781 int | |
| 6782 begin_hold_frame_size_changes (void) | |
| 6783 { | |
| 6784 int depth = specpdl_depth (); | |
| 6785 record_unwind_protect (end_hold_frame_size_changes, Qnil); | |
| 6786 internal_bind_int (&hold_frame_size_changes, 1 + hold_frame_size_changes); | |
| 6787 return depth; | |
| 6788 } | |
| 6789 | |
| 6790 int | |
| 6791 enter_redisplay_critical_section (void) | |
| 6792 { | |
| 6793 int depth = specpdl_depth (); | |
| 6794 | |
| 6795 /* Reentrant entry is deadly. The calling function must check for this. */ | |
| 6796 assert (!in_display); | |
| 6797 begin_hold_frame_size_changes (); | |
| 6798 /* Make sure in_display gets reset, but don't set it yet so that | |
| 6799 commit_ritual_suicide() can be used. */ | |
| 6800 internal_bind_int (&in_display, 0); | |
| 6801 internal_bind_int (&in_display_nesting, 1 + in_display_nesting); | |
| 6802 #ifdef ERROR_CHECK_TRAPPING_PROBLEMS | |
| 6803 /* Force every call to QUIT to check for in_displayness. This will | |
| 6804 verify proper wrapping, as in the previous comment, aborting if not. */ | |
| 6805 something_happened++; | |
| 6806 /* Verify that no nonlocal exits blow past us. */ | |
| 6807 record_unwind_protect (commit_ritual_suicide, Qnil); | |
| 6808 #endif | |
| 6809 in_display++; | |
| 6810 | |
| 6811 set_trapping_problems_flags (INHIBIT_ANY_CHANGE_AFFECTING_REDISPLAY); | |
| 6812 /* Even checking for QUIT can cause arbitrary Lisp code to be executed, | |
| 6813 e.g. through a menu handler. We really don't want that happening | |
| 6814 inside of redisplay. Code that we `eval' is at least written with the | |
| 6815 expectation that it's inside of redisplay, and shouldn't try anything | |
| 6816 weird; but that's not the case for menu code (e.g. custom loads huge | |
| 6817 amounts of LISP FILES from a menu handler! FMH!). Safest just to turn | |
| 6818 this off. We could turn it on using UNINHIBIT_QUIT or | |
| 6819 begin_do_check_for_quit() in certain places if we want, if we know | |
| 6820 it's not in an especially tricky place. */ | |
| 6821 begin_dont_check_for_quit (); | |
| 6822 return depth; | |
| 6823 } | |
| 6824 | |
| 6825 void | |
| 6826 exit_redisplay_critical_section (int depth) | |
| 6827 { | |
| 6828 in_display--; | |
| 6829 assert (!in_display); | |
| 6830 unbind_to (depth); | |
| 6831 | |
| 6832 run_post_redisplay_actions (); | |
| 6833 } | |
| 6834 | |
| 6835 /* Enter the redisplay critical section if we're not already in it. This | |
| 6836 is for code that needs frame changes held up and other protections from | |
| 6837 being inside, but doesn't modify the redisplay structures, and doesn't | |
| 6838 look at them in a way that they will be confused by inconsistencies. */ | |
| 6839 | |
| 6840 int | |
| 6841 enter_redisplay_critical_section_maybe (void) | |
| 6842 { | |
| 6843 if (!in_display) | |
| 6844 return enter_redisplay_critical_section (); | |
| 6845 else | |
| 6846 return internal_bind_int (&in_display_nesting, 1 + in_display_nesting); | |
| 6847 } | |
| 6848 | |
| 6849 void | |
| 6850 exit_redisplay_critical_section_maybe (int depth) | |
| 6851 { | |
| 6852 if (in_display_nesting == 1) | |
| 6853 exit_redisplay_critical_section (depth); | |
| 6854 else | |
| 6855 unbind_to (depth); | |
| 6856 } | |
| 6857 | |
| 1279 | 6858 /* Ensure that all windows on the given frame are correctly displayed. |
| 6859 Return non-zero if pre-empted. */ | |
| 428 | 6860 |
| 442 | 6861 int |
| 428 | 6862 redisplay_frame (struct frame *f, int preemption_check) |
| 6863 { | |
| 6864 struct device *d = XDEVICE (f->device); | |
| 853 | 6865 int depth; |
| 428 | 6866 |
| 1279 | 6867 assert (f->init_finished); |
| 6868 | |
| 1318 | 6869 /* NOTE: Without sufficient checks for stream frames, we got weird |
| 6870 crashes in pdump. These came and went very easily -- adding the | |
| 6871 critical-section code for redisplay was enough to trigger them. | |
| 6872 Perhaps I should have debugged them but there didn't seem to be any | |
| 6873 point. --ben */ | |
| 1279 | 6874 if (FRAME_STREAM_P (f)) /* nothing to do */ |
| 6875 return 0; | |
| 6876 | |
| 1318 | 6877 /* Reentrancy into redisplay can be deadly. See stack trace above |
| 6878 generate_displayable_area(). */ | |
| 6879 if (in_display) | |
| 6880 return 1; | |
| 6881 | |
| 545 | 6882 if (preemption_check |
| 6883 && !DEVICE_IMPL_FLAG (d, XDEVIMPF_DONT_PREEMPT_REDISPLAY)) | |
| 428 | 6884 { |
| 6885 /* The preemption check itself takes a lot of time, | |
| 6886 so normally don't do it here. We do it if called | |
| 6887 from Lisp, though (`redisplay-frame'). */ | |
| 6888 int preempted; | |
| 6889 | |
| 6890 REDISPLAY_PREEMPTION_CHECK; | |
| 6891 if (preempted) | |
| 6892 return 1; | |
| 6893 } | |
| 6894 | |
| 442 | 6895 if (!internal_equal (f->old_buffer_alist, f->buffer_alist, 0)) |
| 6896 { | |
| 6897 Lisp_Object frame; | |
| 6898 | |
| 6899 f->old_buffer_alist = Freplace_list (f->old_buffer_alist, | |
| 6900 f->buffer_alist); | |
| 793 | 6901 frame = wrap_frame (f); |
| 442 | 6902 va_run_hook_with_args (Qbuffer_list_changed_hook, 1, frame); |
| 6903 } | |
| 6904 | |
| 428 | 6905 /* Before we put a hold on frame size changes, attempt to process |
| 6906 any which are already pending. */ | |
| 6907 if (f->size_change_pending) | |
| 5043 | 6908 change_frame_size (f, f->new_width, f->new_height, 0); |
| 428 | 6909 |
| 6910 /* If frame size might need to be changed, due to changed size | |
| 6911 of toolbars, scrollbars etc, change it now */ | |
| 6912 if (f->size_slipped) | |
| 6913 { | |
| 6914 adjust_frame_size (f); | |
| 6915 assert (!f->size_slipped); | |
| 6916 } | |
| 6917 | |
| 1318 | 6918 /* The menubar, toolbar, and icon updates should be done before |
| 853 | 6919 enter_redisplay_critical_section is called and we are officially |
| 3025 | 6920 `in_display'. They is because they tend to eval Lisp code, which |
| 1318 | 6921 needs to be carefully wrapped within the critical section (and hence |
| 6922 is difficult to debug). */ | |
| 428 | 6923 |
| 6924 #ifdef HAVE_MENUBARS | |
| 6925 /* Update the menubar. It is done first since it could change | |
| 6926 the menubar's visibility. This way we avoid having flashing | |
| 6927 caused by an Expose event generated by the visibility change | |
| 6928 being handled. */ | |
| 6929 update_frame_menubars (f); | |
| 6930 #endif /* HAVE_MENUBARS */ | |
| 6931 #ifdef HAVE_TOOLBARS | |
| 905 | 6932 /* Update the toolbars geometry. We don't update the toolbars |
| 6933 themselves at this point since the space they are trying to | |
| 6934 occupy may currently by occupied by gutter elements. Instead we | |
| 6935 update the geometry, then update the gutter geometry, then update | |
| 6936 the gutters - which will cause mapped windows to be repositioned | |
| 6937 - and finally update the toolbars. */ | |
| 6938 update_frame_toolbars_geometry (f); | |
| 428 | 6939 #endif /* HAVE_TOOLBARS */ |
| 442 | 6940 /* Gutter update proper has to be done inside display when no frame |
| 6941 size changes can occur, thus we separately update the gutter | |
| 6942 geometry here if it needs it. */ | |
| 6943 update_frame_gutter_geometry (f); | |
| 428 | 6944 |
| 6945 /* If we clear the frame we have to force its contents to be redrawn. */ | |
| 6946 if (f->clear) | |
| 6947 f->frame_changed = 1; | |
| 6948 | |
| 442 | 6949 /* Invalidate the subwindow caches. We use subwindows_changed here |
| 6950 to cause subwindows to get instantiated. This is because | |
| 428 | 6951 subwindows_state_changed is less strict - dealing with things |
| 6952 like the clicked state of button. We have to do this before | |
| 6953 redisplaying the gutters as subwindows get unmapped in the | |
| 6954 process.*/ | |
| 442 | 6955 if (f->frame_changed) |
| 6956 reset_frame_subwindow_instance_cache (f); | |
| 6957 | |
| 6958 if (f->frame_changed || f->subwindows_changed) | |
| 6959 { | |
| 428 | 6960 /* we have to do this so the gutter gets regenerated. */ |
| 6961 reset_gutter_display_lines (f); | |
| 6962 } | |
| 6963 | |
| 853 | 6964 depth = enter_redisplay_critical_section (); |
| 428 | 6965 |
| 6966 /* ----------------- BEGIN CRITICAL REDISPLAY SECTION ---------------- */ | |
| 1318 | 6967 |
| 6968 /* See comments in enter_redisplay_critical_section() */ | |
| 428 | 6969 |
| 442 | 6970 MAYBE_DEVMETH (d, frame_output_begin, (f)); |
| 6971 | |
| 6972 /* We can now update the gutters, safe in the knowledge that our | |
| 6973 efforts won't get undone. */ | |
| 6974 | |
| 6975 /* This can call lisp, but redisplay is protected by binding | |
| 6976 inhibit_quit. More importantly the code involving display lines | |
| 6977 *assumes* that GC will not happen and so does not GCPRO | |
| 6978 anything. Since we use this code the whole time with the gutters | |
| 1318 | 6979 we cannot allow GC to happen when manipulating the gutters. |
| 6980 | |
| 6981 This must be inside of the critical section for various reasons. | |
| 6982 For example, it messes with display structures, which be left in | |
| 6983 an inconsistent state. */ | |
| 442 | 6984 update_frame_gutters (f); |
| 6985 | |
| 428 | 6986 /* Erase the frame before outputting its contents. */ |
| 6987 if (f->clear) | |
| 6988 { | |
| 442 | 6989 MAYBE_DEVMETH (d, clear_frame, (f)); |
| 428 | 6990 } |
| 6991 | |
| 6992 /* Do the selected window first. */ | |
| 6993 redisplay_window (FRAME_SELECTED_WINDOW (f), 0); | |
| 6994 | |
| 6995 /* Then do the rest. */ | |
| 6996 redisplay_windows (f->root_window, 1); | |
| 6997 | |
| 442 | 6998 MAYBE_DEVMETH (d, frame_output_end, (f)); |
| 428 | 6999 |
| 7000 update_frame_title (f); | |
| 7001 | |
| 905 | 7002 #ifdef HAVE_TOOLBARS |
| 7003 /* Finally update the toolbars. It seems its possible to get in a | |
| 7004 cycle between updating the gutter and the toolbars. Basically we | |
| 7005 want to end up with both being up-to-date and this doesn't seem | |
| 7006 possible in a single pass. */ | |
| 7007 update_frame_toolbars (f); | |
| 7008 #endif /* HAVE_TOOLBARS */ | |
| 7009 | |
| 428 | 7010 CLASS_RESET_CHANGED_FLAGS (f); |
| 7011 f->window_face_cache_reset = 0; | |
| 7012 f->echo_area_garbaged = 0; | |
| 7013 f->clear = 0; | |
| 7014 | |
| 7015 if (!f->size_change_pending) | |
| 7016 f->size_changed = 0; | |
| 7017 | |
| 7018 /* ----------------- END CRITICAL REDISPLAY SECTION ---------------- */ | |
| 7019 | |
| 853 | 7020 /* Allow frame size changes to occur again. */ |
| 7021 exit_redisplay_critical_section (depth); | |
| 428 | 7022 |
| 7023 return 0; | |
| 7024 } | |
| 7025 | |
| 440 | 7026 /* Ensure that all frames on the given device are correctly displayed. |
| 7027 If AUTOMATIC is non-zero, and the device implementation indicates | |
| 7028 no automatic redisplay, as printers do, then the device is not | |
| 7029 redisplayed. AUTOMATIC is set to zero when called from lisp | |
| 7030 functions (redraw-device) and (redisplay-device), and to non-zero | |
| 7031 when called from "lazy" redisplay(); | |
| 7032 */ | |
| 428 | 7033 |
| 7034 static int | |
| 440 | 7035 redisplay_device (struct device *d, int automatic) |
| 428 | 7036 { |
| 7037 Lisp_Object frame, frmcons; | |
| 7038 int size_change_failed = 0; | |
| 7039 struct frame *f; | |
| 7040 | |
| 545 | 7041 if (automatic && DEVICE_IMPL_FLAG (d, XDEVIMPF_NO_AUTO_REDISPLAY)) |
| 440 | 7042 return 0; |
| 7043 | |
| 428 | 7044 if (DEVICE_STREAM_P (d)) /* nothing to do */ |
| 7045 return 0; | |
| 7046 | |
| 7047 /* It is possible that redisplay has been called before the | |
| 545 | 7048 device is fully initialized, or that the console implementation |
| 7049 allows frameless devices. If so then continue with the next | |
| 7050 device. */ | |
| 428 | 7051 if (NILP (DEVICE_SELECTED_FRAME (d))) |
| 7052 return 0; | |
| 7053 | |
| 545 | 7054 if (!DEVICE_IMPL_FLAG (d, XDEVIMPF_DONT_PREEMPT_REDISPLAY)) |
| 7055 { | |
| 7056 int preempted; | |
| 7057 REDISPLAY_PREEMPTION_CHECK; | |
| 7058 if (preempted) | |
| 7059 return 1; | |
| 7060 } | |
| 428 | 7061 |
| 7062 /* Always do the selected frame first. */ | |
| 7063 frame = DEVICE_SELECTED_FRAME (d); | |
| 7064 | |
| 7065 f = XFRAME (frame); | |
| 7066 | |
| 7067 if (f->icon_changed || f->windows_changed) | |
| 7068 update_frame_icon (f); | |
| 7069 | |
| 7070 if (FRAME_REPAINT_P (f)) | |
| 7071 { | |
| 5198 | 7072 if (CLASS_REDISPLAY_FLAGS_CHANGEDP (f)) |
| 428 | 7073 { |
| 588 | 7074 int preempted = redisplay_frame (f, 1); |
| 545 | 7075 if (preempted) |
| 7076 return 1; | |
| 7077 } | |
| 428 | 7078 |
| 7079 /* If the frame redisplay did not get preempted, then this flag | |
| 4187 | 7080 should have gotten set to 0. It might be possible for that |
| 7081 not to happen if a size change event were to occur at an odd | |
| 7082 time. To make sure we don't miss anything we simply don't | |
| 7083 reset the top level flags until the condition ends up being | |
| 7084 in the right state. */ | |
| 428 | 7085 if (f->size_changed) |
| 7086 size_change_failed = 1; | |
| 7087 } | |
| 7088 | |
| 7089 DEVICE_FRAME_LOOP (frmcons, d) | |
| 7090 { | |
| 7091 f = XFRAME (XCAR (frmcons)); | |
| 7092 | |
| 7093 if (f == XFRAME (DEVICE_SELECTED_FRAME (d))) | |
| 7094 continue; | |
| 7095 | |
| 7096 if (f->icon_changed || f->windows_changed) | |
| 7097 update_frame_icon (f); | |
| 7098 | |
| 7099 if (FRAME_REPAINT_P (f)) | |
| 7100 { | |
| 430 | 7101 if (CLASS_REDISPLAY_FLAGS_CHANGEDP (f)) |
| 428 | 7102 { |
| 588 | 7103 int preempted = redisplay_frame (f, 1); |
| 545 | 7104 if (preempted) |
| 7105 return 1; | |
| 428 | 7106 } |
| 7107 | |
| 7108 if (f->size_change_pending) | |
| 7109 size_change_failed = 1; | |
| 7110 } | |
| 7111 } | |
| 7112 | |
| 7113 /* If we get here then we redisplayed all of our frames without | |
| 7114 getting preempted so mark ourselves as clean. */ | |
| 7115 CLASS_RESET_CHANGED_FLAGS (d); | |
| 7116 | |
| 7117 if (!size_change_failed) | |
| 7118 d->size_changed = 0; | |
| 7119 | |
| 7120 return 0; | |
| 7121 } | |
| 7122 | |
| 7123 /* Ensure that all windows on all frames on all devices are displaying | |
| 7124 the current contents of their respective buffers. */ | |
| 7125 | |
| 7126 static void | |
| 7127 redisplay_without_hooks (void) | |
| 7128 { | |
| 7129 Lisp_Object devcons, concons; | |
| 7130 int size_change_failed = 0; | |
| 1292 | 7131 PROFILE_DECLARE (); |
| 7132 | |
| 7133 PROFILE_RECORD_ENTERING_SECTION (QSin_redisplay); | |
| 428 | 7134 |
| 7135 if (asynch_device_change_pending) | |
| 7136 handle_asynch_device_change (); | |
| 7137 | |
| 7138 if (!GLOBAL_REDISPLAY_FLAGS_CHANGEDP && | |
| 430 | 7139 !disable_preemption && preemption_count < max_preempts) |
| 428 | 7140 goto done; |
| 7141 | |
| 7142 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
| 7143 { | |
| 7144 struct device *d = XDEVICE (XCAR (devcons)); | |
| 7145 int preempted; | |
| 7146 | |
| 430 | 7147 if (CLASS_REDISPLAY_FLAGS_CHANGEDP (d)) |
| 428 | 7148 { |
| 440 | 7149 preempted = redisplay_device (d, 1); |
| 428 | 7150 |
| 7151 if (preempted) | |
| 7152 { | |
| 7153 preemption_count++; | |
| 7154 RESET_CHANGED_SET_FLAGS; | |
| 7155 goto done; | |
| 7156 } | |
| 7157 | |
| 7158 /* See comment in redisplay_device. */ | |
| 7159 if (d->size_changed) | |
| 7160 size_change_failed = 1; | |
| 7161 } | |
| 7162 } | |
| 7163 preemption_count = 0; | |
| 7164 | |
| 7165 /* Mark redisplay as accurate */ | |
| 7166 GLOBAL_RESET_CHANGED_FLAGS; | |
| 7167 RESET_CHANGED_SET_FLAGS; | |
| 7168 | |
| 7169 if (faces_changed) | |
| 7170 { | |
| 7171 mark_all_faces_as_clean (); | |
| 7172 faces_changed = 0; | |
| 7173 } | |
| 7174 | |
| 7175 if (!size_change_failed) | |
| 7176 size_changed = 0; | |
| 7177 | |
| 7178 reset_buffer_changes (); | |
| 7179 | |
| 7180 done: | |
| 800 | 7181 #ifdef ERROR_CHECK_DISPLAY |
| 7182 sledgehammer_check_redisplay_structs (); | |
| 7183 #endif /* ERROR_CHECK_DISPLAY */ | |
| 1292 | 7184 |
| 7185 PROFILE_RECORD_EXITING_SECTION (QSin_redisplay); | |
| 428 | 7186 } |
| 7187 | |
| 1318 | 7188 /* Note: All places in the C code that call redisplay() are prepared to |
| 7189 handle GCing, which can happen from run_pre_idle_hook(). However, we | |
| 7190 can't currently handle GC inside the guts of redisplay; see | |
| 7191 enter_redisplay_critical_section(). | |
| 853 | 7192 |
| 7193 (#### What about other external entry points to the redisplay code? | |
| 7194 Someone should go through and make sure that all callers can handle | |
| 7195 GC there, too.) | |
| 7196 */ | |
| 7197 | |
| 428 | 7198 void |
| 7199 redisplay (void) | |
| 7200 { | |
| 853 | 7201 run_pre_idle_hook (); |
| 7202 redisplay_no_pre_idle_hook (); | |
| 7203 } | |
| 7204 | |
| 7205 void | |
| 7206 redisplay_no_pre_idle_hook (void) | |
| 7207 { | |
| 428 | 7208 if (last_display_warning_tick != display_warning_tick && |
| 7209 !inhibit_warning_display) | |
| 7210 { | |
| 7211 /* If an error occurs during this function, oh well. | |
| 4187 | 7212 If we report another warning, we could get stuck in an |
| 428 | 7213 infinite loop reporting warnings. */ |
| 853 | 7214 call0_trapping_problems |
| 7215 (0, Qdisplay_warning_buffer, | |
| 7216 INHIBIT_EXISTING_PERMANENT_DISPLAY_OBJECT_DELETION); | |
| 428 | 7217 last_display_warning_tick = display_warning_tick; |
| 7218 } | |
| 7219 | |
| 7220 redisplay_without_hooks (); | |
| 7221 } | |
| 7222 | |
| 853 | 7223 Lisp_Object |
| 7224 eval_within_redisplay (Lisp_Object dont_trust_this_damn_sucker) | |
| 7225 { | |
| 7226 return | |
| 7227 eval_in_buffer_trapping_problems | |
| 7228 ("Error calling function within redisplay", current_buffer, | |
| 1318 | 7229 dont_trust_this_damn_sucker, 0); |
| 853 | 7230 } |
| 428 | 7231 |
| 7232 /* Efficiently determine the window line number, and return a pointer | |
| 7233 to its printed representation. Do this regardless of whether | |
| 7234 line-number-mode is on. The first line in the buffer is counted as | |
| 7235 1. If narrowing is in effect, the lines are counted from the | |
| 7236 beginning of the visible portion of the buffer. */ | |
| 4970 | 7237 static Ascbyte * |
| 428 | 7238 window_line_number (struct window *w, int type) |
| 7239 { | |
| 7240 struct device *d = XDEVICE (XFRAME (w->frame)->device); | |
| 7241 struct buffer *b = XBUFFER (w->buffer); | |
| 7242 /* Be careful in the order of these tests. The first clause will | |
| 7243 fail if DEVICE_SELECTED_FRAME == Qnil (since w->frame cannot be). | |
| 7244 This can occur when the frame title is computed really early */ | |
| 665 | 7245 Charbpos pos = |
| 5198 | 7246 ((EQ (DEVICE_SELECTED_FRAME (d), w->frame) && |
| 7247 (w == XWINDOW (FRAME_SELECTED_WINDOW (device_selected_frame (d)))) && | |
| 7248 EQ (DEVICE_CONSOLE (d), Vselected_console) && | |
| 7249 XDEVICE (CONSOLE_SELECTED_DEVICE (XCONSOLE (DEVICE_CONSOLE (d)))) == d ) | |
| 428 | 7250 ? BUF_PT (b) |
| 7251 : marker_position (w->pointm[type])); | |
| 7252 EMACS_INT line; | |
| 7253 | |
| 7254 line = buffer_line_number (b, pos, 1); | |
| 7255 | |
| 603 | 7256 { |
| 4970 | 7257 static Ascbyte window_line_number_buf[DECIMAL_PRINT_SIZE (long)]; |
| 603 | 7258 |
| 7259 long_to_string (window_line_number_buf, line + 1); | |
| 7260 | |
| 7261 return window_line_number_buf; | |
| 7262 } | |
| 428 | 7263 } |
| 7264 | |
| 7265 | |
| 7266 /* Given a character representing an object in a modeline | |
| 7267 specification, return a string (stored into the global array | |
| 867 | 7268 `mode_spec_ibyte_string') with the information that object |
| 428 | 7269 represents. |
| 7270 | |
| 7271 This function is largely unchanged from previous versions of the | |
| 7272 redisplay engine. | |
| 7273 | |
| 7274 Warning! This code is also used for frame titles and can be called | |
| 7275 very early in the device/frame update process! JV | |
| 7276 */ | |
| 7277 | |
| 7278 static void | |
| 867 | 7279 decode_mode_spec (struct window *w, Ichar spec, int type) |
| 428 | 7280 { |
| 7281 Lisp_Object obj = Qnil; | |
| 4970 | 7282 const Ascbyte *str = NULL; |
| 428 | 7283 struct buffer *b = XBUFFER (w->buffer); |
| 7284 | |
| 867 | 7285 Dynarr_reset (mode_spec_ibyte_string); |
| 428 | 7286 |
| 7287 switch (spec) | |
| 7288 { | |
| 7289 /* print buffer name */ | |
| 7290 case 'b': | |
| 7291 obj = b->name; | |
| 7292 break; | |
| 7293 | |
| 7294 /* print visited file name */ | |
| 7295 case 'f': | |
| 7296 obj = b->filename; | |
| 7297 break; | |
| 7298 | |
| 7299 /* print the current column */ | |
| 7300 case 'c': | |
| 7301 { | |
| 4187 | 7302 Charbpos pt = (w == XWINDOW (Fselected_window (Qnil))) |
| 7303 ? BUF_PT (b) | |
| 7304 : marker_position (w->pointm[type]); | |
| 428 | 7305 int col = column_at_point (b, pt, 1) + !!column_number_start_at_one; |
| 4970 | 7306 Ascbyte buf[DECIMAL_PRINT_SIZE (long)]; |
| 428 | 7307 |
| 7308 long_to_string (buf, col); | |
| 7309 | |
| 867 | 7310 Dynarr_add_many (mode_spec_ibyte_string, |
| 7311 (const Ibyte *) buf, strlen (buf)); | |
| 428 | 7312 |
| 7313 goto decode_mode_spec_done; | |
| 7314 } | |
| 7315 /* print the file coding system */ | |
| 7316 case 'C': | |
| 7317 { | |
| 4187 | 7318 Lisp_Object codesys = b->buffer_file_coding_system; |
| 7319 /* Be very careful here not to get an error. */ | |
| 428 | 7320 if (NILP (codesys) || SYMBOLP (codesys) || CODING_SYSTEMP (codesys)) |
| 4187 | 7321 { |
| 7322 codesys = find_coding_system_for_text_file (codesys, 0); | |
| 428 | 7323 if (CODING_SYSTEMP (codesys)) |
| 4187 | 7324 obj = XCODING_SYSTEM_MNEMONIC (codesys); |
| 7325 } | |
| 428 | 7326 } |
| 7327 break; | |
| 7328 | |
| 7329 /* print the current line number */ | |
| 7330 case 'l': | |
| 7331 str = window_line_number (w, type); | |
| 7332 break; | |
| 7333 | |
| 7334 /* print value of mode-name (obsolete) */ | |
| 7335 case 'm': | |
| 7336 obj = b->mode_name; | |
| 7337 break; | |
| 7338 | |
| 7339 /* print hyphen and frame number, if != 1 */ | |
| 7340 case 'N': | |
| 7341 #ifdef HAVE_TTY | |
| 7342 { | |
| 7343 struct frame *f = XFRAME (w->frame); | |
| 7344 if (FRAME_TTY_P (f) && f->order_count > 1 && f->order_count <= 99999999) | |
| 7345 { | |
| 7346 /* Naughty, naughty */ | |
| 4970 | 7347 Ascbyte *writable_str = alloca_array (Ascbyte, 10); |
| 428 | 7348 sprintf (writable_str, "-%d", f->order_count); |
| 7349 str = writable_str; | |
| 7350 } | |
| 7351 } | |
| 7352 #endif /* HAVE_TTY */ | |
| 7353 break; | |
| 7354 | |
| 7355 /* print Narrow if appropriate */ | |
| 7356 case 'n': | |
| 7357 if (BUF_BEGV (b) > BUF_BEG (b) | |
| 7358 || BUF_ZV (b) < BUF_Z (b)) | |
| 7359 str = " Narrow"; | |
| 7360 break; | |
| 7361 | |
| 7362 /* print %, * or hyphen, if buffer is read-only, modified or neither */ | |
| 7363 case '*': | |
| 7364 str = (!NILP (b->read_only) | |
| 7365 ? "%" | |
| 7366 : ((BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) | |
| 7367 ? "*" | |
| 7368 : "-")); | |
| 7369 break; | |
| 7370 | |
| 7371 /* print * or hyphen -- XEmacs change to allow a buffer to be | |
| 4187 | 7372 read-only but still indicate whether it is modified. */ |
| 428 | 7373 case '+': |
| 7374 str = ((BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) | |
| 7375 ? "*" | |
| 7376 : (!NILP (b->read_only) | |
| 7377 ? "%" | |
| 7378 : "-")); | |
| 7379 break; | |
| 7380 | |
| 7381 /* #### defined in 19.29 decode_mode_spec, but not in | |
| 4187 | 7382 modeline-format doc string. */ |
| 428 | 7383 /* This differs from %* in that it ignores read-only-ness. */ |
| 7384 case '&': | |
| 7385 str = ((BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) | |
| 7386 ? "*" | |
| 7387 : "-"); | |
| 7388 break; | |
| 7389 | |
| 7390 /* print process status */ | |
| 7391 case 's': | |
| 7392 obj = Fget_buffer_process (w->buffer); | |
| 7393 if (NILP (obj)) | |
| 7394 str = GETTEXT ("no process"); | |
| 7395 else | |
| 7396 obj = Fsymbol_name (Fprocess_status (obj)); | |
| 7397 break; | |
| 7398 | |
| 7399 /* Print name of selected frame. */ | |
| 7400 case 'S': | |
| 7401 obj = XFRAME (w->frame)->name; | |
| 7402 break; | |
| 7403 | |
| 7404 /* indicate TEXT or BINARY */ | |
| 7405 case 't': | |
| 7406 /* #### NT does not use this any more. Now what? */ | |
| 7407 str = "T"; | |
| 7408 break; | |
| 7409 | |
| 7410 /* print percent of buffer above top of window, or Top, Bot or All */ | |
| 7411 case 'p': | |
| 7412 { | |
| 665 | 7413 Charbpos pos = marker_position (w->start[type]); |
| 428 | 7414 |
| 7415 /* This had better be while the desired lines are being done. */ | |
| 7416 if (w->window_end_pos[type] <= BUF_Z (b) - BUF_ZV (b)) | |
| 7417 { | |
| 7418 if (pos <= BUF_BEGV (b)) | |
| 7419 str = "All"; | |
| 7420 else | |
| 7421 str = "Bottom"; | |
| 7422 } | |
| 7423 else if (pos <= BUF_BEGV (b)) | |
| 7424 str = "Top"; | |
| 7425 else | |
| 7426 { | |
| 7427 /* This hard limit is ok since the string it will hold has a | |
| 4187 | 7428 fixed maximum length of 3. But just to be safe... */ |
| 4970 | 7429 Ascbyte buf[10]; |
| 428 | 7430 Charcount chars = pos - BUF_BEGV (b); |
| 7431 Charcount total = BUF_ZV (b) - BUF_BEGV (b); | |
| 7432 | |
| 7433 /* Avoid overflow on big buffers */ | |
| 7434 int percent = total > LONG_MAX/200 ? | |
| 7435 (chars + total/200) / (total / 100) : | |
| 7436 (chars * 100 + total/2) / total; | |
| 7437 | |
| 7438 /* We can't normally display a 3-digit number, so get us a | |
| 4187 | 7439 2-digit number that is close. */ |
| 428 | 7440 if (percent == 100) |
| 7441 percent = 99; | |
| 7442 | |
| 7443 sprintf (buf, "%d%%", percent); | |
| 867 | 7444 Dynarr_add_many (mode_spec_ibyte_string, (Ibyte *) buf, |
| 428 | 7445 strlen (buf)); |
| 7446 | |
| 7447 goto decode_mode_spec_done; | |
| 7448 } | |
| 7449 break; | |
| 7450 } | |
| 7451 | |
| 7452 /* print percent of buffer above bottom of window, perhaps plus | |
| 7453 Top, or print Bottom or All */ | |
| 7454 case 'P': | |
| 7455 { | |
| 665 | 7456 Charbpos toppos = marker_position (w->start[type]); |
| 7457 Charbpos botpos = BUF_Z (b) - w->window_end_pos[type]; | |
| 428 | 7458 |
| 7459 /* botpos is only accurate as of the last redisplay, so we can | |
| 4187 | 7460 only treat it as a hint. In particular, after erase-buffer, |
| 7461 botpos may be negative. */ | |
| 428 | 7462 if (botpos < toppos) |
| 7463 botpos = toppos; | |
| 7464 | |
| 7465 if (botpos >= BUF_ZV (b)) | |
| 7466 { | |
| 7467 if (toppos <= BUF_BEGV (b)) | |
| 7468 str = "All"; | |
| 7469 else | |
| 7470 str = "Bottom"; | |
| 7471 } | |
| 7472 else | |
| 7473 { | |
| 7474 /* This hard limit is ok since the string it will hold has a | |
| 4187 | 7475 fixed maximum length of around 6. But just to be safe... */ |
| 4970 | 7476 Ascbyte buf[10]; |
| 428 | 7477 Charcount chars = botpos - BUF_BEGV (b); |
| 7478 Charcount total = BUF_ZV (b) - BUF_BEGV (b); | |
| 7479 | |
| 7480 /* Avoid overflow on big buffers */ | |
| 7481 int percent = total > LONG_MAX/200 ? | |
| 7482 (chars + total/200) / (total / 100) : | |
| 7483 (chars * 100 + total/2) / max (total, 1); | |
| 7484 | |
| 7485 /* We can't normally display a 3-digit number, so get us a | |
| 4187 | 7486 2-digit number that is close. */ |
| 428 | 7487 if (percent == 100) |
| 7488 percent = 99; | |
| 7489 | |
| 7490 if (toppos <= BUF_BEGV (b)) | |
| 7491 sprintf (buf, "Top%d%%", percent); | |
| 7492 else | |
| 7493 sprintf (buf, "%d%%", percent); | |
| 7494 | |
| 867 | 7495 Dynarr_add_many (mode_spec_ibyte_string, (Ibyte *) buf, |
| 428 | 7496 strlen (buf)); |
| 7497 | |
| 7498 goto decode_mode_spec_done; | |
| 7499 } | |
| 7500 break; | |
| 7501 } | |
| 7502 | |
| 7503 /* print % */ | |
| 7504 case '%': | |
| 7505 str = "%"; | |
| 7506 break; | |
| 7507 | |
| 7508 /* print one [ for each recursive editing level. */ | |
| 7509 case '[': | |
| 7510 { | |
| 7511 int i; | |
| 7512 | |
| 7513 if (command_loop_level > 5) | |
| 7514 { | |
| 7515 str = "[[[... "; | |
| 7516 break; | |
| 7517 } | |
| 7518 | |
| 7519 for (i = 0; i < command_loop_level; i++) | |
| 867 | 7520 Dynarr_add (mode_spec_ibyte_string, '['); |
| 428 | 7521 |
| 7522 goto decode_mode_spec_done; | |
| 7523 } | |
| 7524 | |
| 7525 /* print one ] for each recursive editing level. */ | |
| 7526 case ']': | |
| 7527 { | |
| 7528 int i; | |
| 7529 | |
| 7530 if (command_loop_level > 5) | |
| 7531 { | |
| 7532 str = "...]]]"; | |
| 7533 break; | |
| 7534 } | |
| 7535 | |
| 7536 for (i = 0; i < command_loop_level; i++) | |
| 867 | 7537 Dynarr_add (mode_spec_ibyte_string, ']'); |
| 428 | 7538 |
| 7539 goto decode_mode_spec_done; | |
| 7540 } | |
| 7541 | |
| 7542 /* print infinitely many dashes -- handle at top level now */ | |
| 7543 case '-': | |
| 7544 break; | |
| 7545 | |
| 7546 } | |
| 7547 | |
| 7548 if (STRINGP (obj)) | |
| 867 | 7549 Dynarr_add_many (mode_spec_ibyte_string, |
| 428 | 7550 XSTRING_DATA (obj), |
| 7551 XSTRING_LENGTH (obj)); | |
| 7552 else if (str) | |
| 867 | 7553 Dynarr_add_many (mode_spec_ibyte_string, (Ibyte *) str, strlen (str)); |
| 428 | 7554 |
| 7555 decode_mode_spec_done: | |
| 867 | 7556 Dynarr_add (mode_spec_ibyte_string, '\0'); |
| 428 | 7557 } |
| 7558 | |
| 7559 /* Given a display line, free all of its data structures. */ | |
| 7560 | |
| 7561 static void | |
| 7562 free_display_line (struct display_line *dl) | |
| 7563 { | |
| 7564 int block; | |
| 7565 | |
| 7566 if (dl->display_blocks) | |
| 7567 { | |
| 7568 for (block = 0; block < Dynarr_largest (dl->display_blocks); block++) | |
| 4187 | 7569 { |
| 428 | 7570 struct display_block *db = Dynarr_atp (dl->display_blocks, block); |
| 7571 | |
| 7572 Dynarr_free (db->runes); | |
| 7573 } | |
| 7574 | |
| 7575 Dynarr_free (dl->display_blocks); | |
| 7576 dl->display_blocks = NULL; | |
| 7577 } | |
| 7578 | |
| 7579 if (dl->left_glyphs) | |
| 7580 { | |
| 7581 Dynarr_free (dl->left_glyphs); | |
| 7582 dl->left_glyphs = NULL; | |
| 7583 } | |
| 7584 | |
| 7585 if (dl->right_glyphs) | |
| 7586 { | |
| 7587 Dynarr_free (dl->right_glyphs); | |
| 7588 dl->right_glyphs = NULL; | |
| 7589 } | |
| 7590 } | |
| 7591 | |
| 7592 | |
| 7593 /* Given an array of display lines, free them and all data structures | |
| 7594 contained within them. */ | |
| 7595 | |
| 7596 void | |
| 7597 free_display_lines (display_line_dynarr *dla) | |
| 7598 { | |
| 7599 int line; | |
| 7600 | |
| 7601 for (line = 0; line < Dynarr_largest (dla); line++) | |
| 7602 { | |
| 7603 free_display_line (Dynarr_atp (dla, line)); | |
| 7604 } | |
| 7605 | |
| 7606 Dynarr_free (dla); | |
| 7607 } | |
| 7608 | |
| 7609 /* Call internal free routine for each set of display lines. */ | |
| 7610 | |
| 7611 void | |
| 7612 free_display_structs (struct window_mirror *mir) | |
| 7613 { | |
| 7614 if (mir->current_display_lines) | |
| 7615 { | |
| 7616 free_display_lines (mir->current_display_lines); | |
| 7617 mir->current_display_lines = 0; | |
| 7618 } | |
| 7619 | |
| 7620 if (mir->desired_display_lines) | |
| 7621 { | |
| 7622 free_display_lines (mir->desired_display_lines); | |
| 7623 mir->desired_display_lines = 0; | |
| 7624 } | |
| 7625 } | |
| 7626 | |
| 7627 | |
| 7628 static void | |
| 7629 mark_glyph_block_dynarr (glyph_block_dynarr *gba) | |
| 7630 { | |
| 7631 if (gba) | |
| 7632 { | |
| 4967 | 7633 glyph_block *gb = Dynarr_begin (gba); |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
7634 glyph_block *gb_last = Dynarr_past_lastp (gba); |
| 428 | 7635 |
| 7636 for (; gb < gb_last; gb++) | |
| 7637 { | |
| 7638 if (!NILP (gb->glyph)) | |
| 7639 mark_object (gb->glyph); | |
| 7640 if (!NILP (gb->extent)) | |
| 7641 mark_object (gb->extent); | |
| 7642 } | |
| 7643 } | |
| 7644 } | |
| 7645 | |
| 442 | 7646 /* See the comment in image_instantiate_cache_result as to why marking |
| 7647 the glyph will also mark the image_instance. */ | |
| 7648 void | |
| 428 | 7649 mark_redisplay_structs (display_line_dynarr *dla) |
| 7650 { | |
|
4844
91b3d00e717f
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Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
7651 display_line *dl = Dynarr_begin (dla); |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
7652 display_line *dl_last = Dynarr_past_lastp (dla); |
| 428 | 7653 |
| 7654 for (; dl < dl_last; dl++) | |
| 7655 { | |
| 7656 display_block_dynarr *dba = dl->display_blocks; | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
7657 display_block *db = Dynarr_begin (dba); |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
7658 display_block *db_last = Dynarr_past_lastp (dba); |
| 428 | 7659 |
| 7660 for (; db < db_last; db++) | |
| 7661 { | |
| 7662 rune_dynarr *ra = db->runes; | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
7663 rune *r = Dynarr_begin (ra); |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
7664 rune *r_last = Dynarr_past_lastp (ra); |
| 428 | 7665 |
| 7666 for (; r < r_last; r++) | |
| 7667 { | |
| 7668 if (r->type == RUNE_DGLYPH) | |
| 7669 { | |
| 7670 if (!NILP (r->object.dglyph.glyph)) | |
| 7671 mark_object (r->object.dglyph.glyph); | |
| 7672 if (!NILP (r->object.dglyph.extent)) | |
| 7673 mark_object (r->object.dglyph.extent); | |
| 7674 } | |
| 7675 } | |
| 7676 } | |
| 7677 | |
| 7678 mark_glyph_block_dynarr (dl->left_glyphs); | |
| 7679 mark_glyph_block_dynarr (dl->right_glyphs); | |
| 7680 } | |
| 7681 } | |
| 7682 | |
| 7683 | |
| 2367 | 7684 |
| 7685 /* | |
| 7686 | |
| 7687 Info on line-start cache: | |
| 7688 | |
| 7689 (Info-goto-node "(internals)Line Start Cache") | |
| 7690 */ | |
| 428 | 7691 |
| 7692 /* This will get used quite a bit so we don't want to be constantly | |
| 7693 allocating and freeing it. */ | |
| 7694 static line_start_cache_dynarr *internal_cache; | |
| 7695 | |
| 7696 /* Makes internal_cache represent the TYPE display structs and only | |
| 7697 the TYPE display structs. */ | |
| 7698 | |
| 7699 static void | |
| 7700 update_internal_cache_list (struct window *w, int type) | |
| 7701 { | |
| 7702 int line; | |
| 7703 display_line_dynarr *dla = window_display_lines (w, type); | |
| 7704 | |
| 7705 Dynarr_reset (internal_cache); | |
| 7706 for (line = 0; line < Dynarr_length (dla); line++) | |
| 7707 { | |
| 7708 struct display_line *dl = Dynarr_atp (dla, line); | |
| 7709 | |
| 7710 if (dl->modeline) | |
| 7711 continue; | |
| 7712 else | |
| 7713 { | |
| 7714 struct line_start_cache lsc; | |
| 434 | 7715 |
| 826 | 7716 lsc.start = dl->charpos; |
| 7717 lsc.end = dl->end_charpos; | |
| 428 | 7718 lsc.height = dl->ascent + dl->descent; |
| 7719 | |
| 7720 Dynarr_add (internal_cache, lsc); | |
| 7721 } | |
| 7722 } | |
| 7723 } | |
| 7724 | |
| 7725 /* Reset the line cache if necessary. This should be run at the | |
| 7726 beginning of any function which access the cache. */ | |
| 7727 | |
| 7728 static void | |
| 7729 validate_line_start_cache (struct window *w) | |
| 7730 { | |
| 7731 struct buffer *b = XBUFFER (w->buffer); | |
| 7732 struct frame *f = XFRAME (w->frame); | |
| 7733 | |
| 7734 if (!w->line_cache_validation_override) | |
| 7735 { | |
| 7736 /* f->extents_changed used to be in here because extent face and | |
| 4187 | 7737 size changes can cause text shifting. However, the extent |
| 7738 covering the region is constantly having its face set and | |
| 7739 priority altered by the mouse code. This means that the line | |
| 7740 start cache is constantly being invalidated. This is bad | |
| 7741 since the mouse code also triggers heavy usage of the cache. | |
| 7742 Since it is an unlikely that f->extents being changed | |
| 7743 indicates that the cache really needs to be updated and if it | |
| 7744 does redisplay will catch it pretty quickly we no longer | |
| 7745 invalidate the cache if it is set. This greatly speeds up | |
| 7746 dragging out regions with the mouse. */ | |
| 428 | 7747 if (XINT (w->line_cache_last_updated) < BUF_MODIFF (b) |
| 7748 || f->faces_changed | |
| 7749 || f->clip_changed) | |
| 7750 { | |
| 7751 Dynarr_reset (w->line_start_cache); | |
| 7752 } | |
| 7753 } | |
| 7754 } | |
| 7755 | |
| 7756 /* Return the very first buffer position contained in the given | |
| 7757 window's cache, or -1 if the cache is empty. Assumes that the | |
| 7758 cache is valid. */ | |
| 7759 | |
| 665 | 7760 static Charbpos |
| 428 | 7761 line_start_cache_start (struct window *w) |
| 7762 { | |
| 7763 line_start_cache_dynarr *cache = w->line_start_cache; | |
| 7764 | |
| 7765 if (!Dynarr_length (cache)) | |
| 7766 return -1; | |
| 7767 else | |
| 4967 | 7768 return Dynarr_begin (cache)->start; |
| 428 | 7769 } |
| 7770 | |
| 7771 /* Return the very last buffer position contained in the given | |
| 7772 window's cache, or -1 if the cache is empty. Assumes that the | |
| 7773 cache is valid. */ | |
| 7774 | |
| 665 | 7775 static Charbpos |
| 428 | 7776 line_start_cache_end (struct window *w) |
| 7777 { | |
| 7778 line_start_cache_dynarr *cache = w->line_start_cache; | |
| 7779 | |
| 7780 if (!Dynarr_length (cache)) | |
| 7781 return -1; | |
| 7782 else | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
7783 return Dynarr_lastp (cache)->end; |
| 428 | 7784 } |
| 7785 | |
| 7786 /* Return the index of the line POINT is contained within in window | |
| 7787 W's line start cache. It will enlarge the cache or move the cache | |
| 7788 window in order to have POINT be present in the cache. MIN_PAST is | |
| 7789 a guarantee of the number of entries in the cache present on either | |
| 7790 side of POINT (unless a buffer boundary is hit). If MIN_PAST is -1 | |
| 7791 then it will be treated as 0, but the cache window will not be | |
| 7792 allowed to shift. Returns -1 if POINT cannot be found in the cache | |
| 7793 for any reason. */ | |
| 7794 | |
| 7795 int | |
| 665 | 7796 point_in_line_start_cache (struct window *w, Charbpos point, int min_past) |
| 428 | 7797 { |
| 7798 struct buffer *b = XBUFFER (w->buffer); | |
| 7799 line_start_cache_dynarr *cache = w->line_start_cache; | |
| 647 | 7800 int top, bottom, pos; |
| 428 | 7801 |
| 7802 validate_line_start_cache (w); | |
| 7803 w->line_cache_validation_override++; | |
| 7804 | |
| 7805 /* Let functions pass in negative values, but we still treat -1 | |
| 7806 specially. */ | |
| 7807 /* #### bogosity alert */ | |
| 7808 if (min_past < 0 && min_past != -1) | |
| 7809 min_past = -min_past; | |
| 7810 | |
| 7811 if (!Dynarr_length (cache) || line_start_cache_start (w) > point | |
| 7812 || line_start_cache_end (w) < point) | |
| 7813 { | |
| 7814 int loop; | |
| 7815 int win_char_height = window_char_height (w, 1); | |
| 7816 | |
| 7817 /* Occasionally we get here with a 0 height | |
| 4187 | 7818 window. find_next_newline_no_quit will abort if we pass it a |
| 7819 count of 0 so handle that case. */ | |
| 428 | 7820 if (!win_char_height) |
| 7821 win_char_height = 1; | |
| 7822 | |
| 7823 if (!Dynarr_length (cache)) | |
| 7824 { | |
| 665 | 7825 Charbpos from = find_next_newline_no_quit (b, point, -1); |
| 7826 Charbpos to = find_next_newline_no_quit (b, from, win_char_height); | |
| 428 | 7827 |
| 7828 update_line_start_cache (w, from, to, point, 0); | |
| 7829 | |
| 7830 if (!Dynarr_length (cache)) | |
| 7831 { | |
| 7832 w->line_cache_validation_override--; | |
| 7833 return -1; | |
| 7834 } | |
| 7835 } | |
| 7836 | |
| 7837 assert (Dynarr_length (cache)); | |
| 7838 | |
| 7839 loop = 0; | |
| 7840 while (line_start_cache_start (w) > point | |
| 7841 && (loop < cache_adjustment || min_past == -1)) | |
| 7842 { | |
| 665 | 7843 Charbpos from, to; |
| 428 | 7844 |
| 7845 from = line_start_cache_start (w); | |
| 7846 if (from <= BUF_BEGV (b)) | |
| 7847 break; | |
| 7848 | |
| 7849 from = find_next_newline_no_quit (b, from, -win_char_height); | |
| 7850 to = line_start_cache_end (w); | |
| 7851 | |
| 7852 update_line_start_cache (w, from, to, point, 0); | |
| 7853 loop++; | |
| 7854 } | |
| 7855 | |
| 7856 if (line_start_cache_start (w) > point) | |
| 7857 { | |
| 665 | 7858 Charbpos from, to; |
| 428 | 7859 |
| 7860 from = find_next_newline_no_quit (b, point, -1); | |
| 7861 if (from >= BUF_ZV (b)) | |
| 7862 { | |
| 7863 to = find_next_newline_no_quit (b, from, -win_char_height); | |
| 7864 from = to; | |
| 7865 to = BUF_ZV (b); | |
| 7866 } | |
| 7867 else | |
| 7868 to = find_next_newline_no_quit (b, from, win_char_height); | |
| 7869 | |
| 7870 update_line_start_cache (w, from, to, point, 0); | |
| 7871 } | |
| 7872 | |
| 7873 loop = 0; | |
| 7874 while (line_start_cache_end (w) < point | |
| 7875 && (loop < cache_adjustment || min_past == -1)) | |
| 7876 { | |
| 665 | 7877 Charbpos from, to; |
| 428 | 7878 |
| 7879 to = line_start_cache_end (w); | |
| 7880 if (to >= BUF_ZV (b)) | |
| 7881 break; | |
| 7882 | |
| 7883 from = line_start_cache_end (w); | |
| 7884 to = find_next_newline_no_quit (b, from, win_char_height); | |
| 7885 | |
| 7886 update_line_start_cache (w, from, to, point, 0); | |
| 7887 loop++; | |
| 7888 } | |
| 7889 | |
| 7890 if (line_start_cache_end (w) < point) | |
| 7891 { | |
| 665 | 7892 Charbpos from, to; |
| 428 | 7893 |
| 7894 from = find_next_newline_no_quit (b, point, -1); | |
| 7895 if (from >= BUF_ZV (b)) | |
| 7896 { | |
| 7897 to = find_next_newline_no_quit (b, from, -win_char_height); | |
| 7898 from = to; | |
| 7899 to = BUF_ZV (b); | |
| 7900 } | |
| 7901 else | |
| 7902 to = find_next_newline_no_quit (b, from, win_char_height); | |
| 7903 | |
| 7904 update_line_start_cache (w, from, to, point, 0); | |
| 7905 } | |
| 7906 } | |
| 7907 | |
| 7908 assert (Dynarr_length (cache)); | |
| 7909 | |
| 7910 if (min_past == -1) | |
| 7911 min_past = 0; | |
| 7912 | |
| 7913 /* This could happen if the buffer is narrowed. */ | |
| 7914 if (line_start_cache_start (w) > point | |
| 7915 || line_start_cache_end (w) < point) | |
| 7916 { | |
| 7917 w->line_cache_validation_override--; | |
| 7918 return -1; | |
| 7919 } | |
| 7920 | |
| 7921 find_point_loop: | |
| 7922 | |
| 7923 top = Dynarr_length (cache) - 1; | |
| 7924 bottom = 0; | |
| 7925 | |
| 7926 while (1) | |
| 7927 { | |
| 647 | 7928 int new_pos; |
| 665 | 7929 Charbpos start, end; |
| 428 | 7930 |
| 7931 pos = (bottom + top + 1) >> 1; | |
| 7932 start = Dynarr_atp (cache, pos)->start; | |
| 7933 end = Dynarr_atp (cache, pos)->end; | |
| 7934 | |
| 7935 if (point >= start && point <= end) | |
| 7936 { | |
| 7937 if (pos < min_past && line_start_cache_start (w) > BUF_BEGV (b)) | |
| 7938 { | |
| 665 | 7939 Charbpos from = |
| 428 | 7940 find_next_newline_no_quit (b, line_start_cache_start (w), |
| 7941 -min_past - 1); | |
| 665 | 7942 Charbpos to = line_start_cache_end (w); |
| 428 | 7943 |
| 7944 update_line_start_cache (w, from, to, point, 0); | |
| 7945 goto find_point_loop; | |
| 7946 } | |
| 7947 else if ((Dynarr_length (cache) - pos - 1) < min_past | |
| 7948 && line_start_cache_end (w) < BUF_ZV (b)) | |
| 7949 { | |
| 665 | 7950 Charbpos from = line_start_cache_end (w); |
| 7951 Charbpos to = find_next_newline_no_quit (b, from, | |
| 428 | 7952 (min_past |
| 7953 ? min_past | |
| 7954 : 1)); | |
| 7955 | |
| 7956 update_line_start_cache (w, from, to, point, 0); | |
| 7957 goto find_point_loop; | |
| 7958 } | |
| 7959 else | |
| 7960 { | |
| 7961 w->line_cache_validation_override--; | |
| 7962 return pos; | |
| 7963 } | |
| 7964 } | |
| 7965 else if (point > end) | |
| 7966 bottom = pos + 1; | |
| 7967 else if (point < start) | |
| 7968 top = pos - 1; | |
| 7969 else | |
| 2500 | 7970 ABORT (); |
| 428 | 7971 |
| 7972 new_pos = (bottom + top + 1) >> 1; | |
| 7973 if (pos == new_pos) | |
| 7974 { | |
| 7975 w->line_cache_validation_override--; | |
| 7976 return -1; | |
| 7977 } | |
| 7978 } | |
| 7979 } | |
| 7980 | |
| 7981 /* Return a boolean indicating if POINT would be visible in window W | |
| 1708 | 7982 if display of the window was to begin at STARTP. If PARTIALLY is |
| 7983 zero, then if POINT has fewer visible pixels than the window clip, | |
| 7984 0 is returned; otherwise, 1 is returned if POINT has any visible | |
| 7985 pixels. */ | |
| 428 | 7986 int |
| 1708 | 7987 point_would_be_visible (struct window *w, Charbpos startp, Charbpos point, |
| 7988 int partially) | |
| 428 | 7989 { |
| 7990 struct buffer *b = XBUFFER (w->buffer); | |
| 5198 | 7991 int pixpos = -WINDOW_TEXT_TOP_CLIP (w); |
| 428 | 7992 int bottom = WINDOW_TEXT_HEIGHT (w); |
| 7993 int start_elt; | |
| 7994 | |
| 7995 /* If point is before the intended start it obviously can't be visible. */ | |
| 7996 if (point < startp) | |
| 7997 return 0; | |
| 7998 | |
| 7999 /* If point or start are not in the accessible buffer range, then | |
| 8000 fail. */ | |
| 8001 if (startp < BUF_BEGV (b) || startp > BUF_ZV (b) | |
| 8002 || point < BUF_BEGV (b) || point > BUF_ZV (b)) | |
| 8003 return 0; | |
| 8004 | |
| 8005 validate_line_start_cache (w); | |
| 8006 w->line_cache_validation_override++; | |
| 8007 | |
| 8008 start_elt = point_in_line_start_cache (w, startp, 0); | |
| 8009 if (start_elt == -1) | |
| 8010 { | |
| 8011 w->line_cache_validation_override--; | |
| 8012 return 0; | |
| 8013 } | |
| 8014 | |
| 8015 assert (line_start_cache_start (w) <= startp | |
| 8016 && line_start_cache_end (w) >= startp); | |
| 8017 | |
| 8018 while (1) | |
| 8019 { | |
| 8020 int height; | |
| 8021 | |
| 8022 /* Expand the cache if necessary. */ | |
| 8023 if (start_elt == Dynarr_length (w->line_start_cache)) | |
| 8024 { | |
| 665 | 8025 Charbpos old_startp = |
| 428 | 8026 Dynarr_atp (w->line_start_cache, start_elt - 1)->start; |
| 8027 | |
| 8028 start_elt = point_in_line_start_cache (w, old_startp, | |
| 8029 window_char_height (w, 0)); | |
| 8030 | |
| 8031 /* We've already actually processed old_startp, so increment | |
| 4187 | 8032 immediately. */ |
| 428 | 8033 start_elt++; |
| 8034 | |
| 8035 /* If this happens we didn't add any extra elements. Bummer. */ | |
| 8036 if (start_elt == Dynarr_length (w->line_start_cache)) | |
| 8037 { | |
| 8038 w->line_cache_validation_override--; | |
| 8039 return 0; | |
| 8040 } | |
| 8041 } | |
| 8042 | |
| 8043 height = Dynarr_atp (w->line_start_cache, start_elt)->height; | |
| 8044 | |
| 8045 if (pixpos + height > bottom) | |
| 8046 { | |
| 1708 | 8047 if (bottom - pixpos < (partially ? 0 : VERTICAL_CLIP (w, 0))) |
| 428 | 8048 { |
| 8049 w->line_cache_validation_override--; | |
| 8050 return 0; | |
| 8051 } | |
| 8052 } | |
| 8053 | |
| 8054 pixpos += height; | |
| 8055 if (point <= Dynarr_atp (w->line_start_cache, start_elt)->end) | |
| 8056 { | |
| 8057 w->line_cache_validation_override--; | |
| 8058 return 1; | |
| 8059 } | |
| 8060 | |
| 8061 start_elt++; | |
| 8062 } | |
| 8063 } | |
| 8064 | |
| 8065 /* For the given window W, if display starts at STARTP, what will be | |
| 8066 the buffer position at the beginning or end of the last line | |
| 8067 displayed. The end of the last line is also know as the window end | |
| 8068 position. | |
| 8069 | |
| 442 | 8070 WARNING: It is possible that redisplay failed to layout any lines for the |
| 8071 windows. Under normal circumstances this is rare. However it seems that it | |
| 8072 does occur in the following situation: A mouse event has come in and we | |
| 8073 need to compute its location in a window. That code (in | |
| 8074 pixel_to_glyph_translation) already can handle 0 as an error return value. | |
| 8075 | |
| 428 | 8076 #### With a little work this could probably be reworked as just a |
| 8077 call to start_with_line_at_pixpos. */ | |
| 8078 | |
| 665 | 8079 static Charbpos |
| 8080 start_end_of_last_line (struct window *w, Charbpos startp, int end, | |
| 4187 | 8081 int may_error) |
| 428 | 8082 { |
| 8083 struct buffer *b = XBUFFER (w->buffer); | |
| 8084 line_start_cache_dynarr *cache = w->line_start_cache; | |
| 8085 int pixpos = 0; | |
| 8086 int bottom = WINDOW_TEXT_HEIGHT (w); | |
| 665 | 8087 Charbpos cur_start; |
| 428 | 8088 int start_elt; |
| 8089 | |
| 8090 validate_line_start_cache (w); | |
| 8091 w->line_cache_validation_override++; | |
| 8092 | |
| 8093 if (startp < BUF_BEGV (b)) | |
| 8094 startp = BUF_BEGV (b); | |
| 8095 else if (startp > BUF_ZV (b)) | |
| 8096 startp = BUF_ZV (b); | |
| 8097 cur_start = startp; | |
| 8098 | |
| 8099 start_elt = point_in_line_start_cache (w, cur_start, 0); | |
| 8100 if (start_elt == -1) | |
| 442 | 8101 return may_error ? 0 : startp; |
| 428 | 8102 |
| 8103 while (1) | |
| 8104 { | |
| 8105 int height = Dynarr_atp (cache, start_elt)->height; | |
| 8106 | |
| 8107 cur_start = Dynarr_atp (cache, start_elt)->start; | |
| 8108 | |
| 8109 if (pixpos + height > bottom) | |
| 8110 { | |
| 8111 /* Adjust for any possible clip. */ | |
| 8112 if (bottom - pixpos < VERTICAL_CLIP (w, 0)) | |
| 8113 start_elt--; | |
| 8114 | |
| 8115 if (start_elt < 0) | |
| 8116 { | |
| 8117 w->line_cache_validation_override--; | |
| 8118 if (end) | |
| 8119 return BUF_ZV (b); | |
| 8120 else | |
| 8121 return BUF_BEGV (b); | |
| 8122 } | |
| 8123 else | |
| 8124 { | |
| 8125 w->line_cache_validation_override--; | |
| 8126 if (end) | |
| 8127 return Dynarr_atp (cache, start_elt)->end; | |
| 8128 else | |
| 8129 return Dynarr_atp (cache, start_elt)->start; | |
| 8130 } | |
| 8131 } | |
| 8132 | |
| 8133 pixpos += height; | |
| 8134 start_elt++; | |
| 8135 if (start_elt == Dynarr_length (cache)) | |
| 8136 { | |
| 665 | 8137 Charbpos from = line_start_cache_end (w); |
| 428 | 8138 int win_char_height = window_char_height (w, 0); |
| 665 | 8139 Charbpos to = find_next_newline_no_quit (b, from, |
| 428 | 8140 (win_char_height |
| 8141 ? win_char_height | |
| 8142 : 1)); | |
| 8143 | |
| 8144 /* We've hit the end of the bottom so that's what it is. */ | |
| 8145 if (from >= BUF_ZV (b)) | |
| 8146 { | |
| 8147 w->line_cache_validation_override--; | |
| 8148 return BUF_ZV (b); | |
| 8149 } | |
| 8150 | |
| 8151 update_line_start_cache (w, from, to, BUF_PT (b), 0); | |
| 8152 | |
| 8153 /* Updating the cache invalidates any current indexes. */ | |
| 8154 start_elt = point_in_line_start_cache (w, cur_start, -1) + 1; | |
| 8155 } | |
| 8156 } | |
| 8157 } | |
| 8158 | |
| 8159 /* For the given window W, if display starts at STARTP, what will be | |
| 8160 the buffer position at the beginning of the last line displayed. */ | |
| 8161 | |
| 665 | 8162 Charbpos |
| 8163 start_of_last_line (struct window *w, Charbpos startp) | |
| 428 | 8164 { |
| 442 | 8165 return start_end_of_last_line (w, startp, 0 , 0); |
| 428 | 8166 } |
| 8167 | |
| 8168 /* For the given window W, if display starts at STARTP, what will be | |
| 8169 the buffer position at the end of the last line displayed. This is | |
| 8170 also know as the window end position. */ | |
| 8171 | |
| 665 | 8172 Charbpos |
| 8173 end_of_last_line (struct window *w, Charbpos startp) | |
| 428 | 8174 { |
| 442 | 8175 return start_end_of_last_line (w, startp, 1, 0); |
| 428 | 8176 } |
| 8177 | |
| 665 | 8178 static Charbpos |
| 8179 end_of_last_line_may_error (struct window *w, Charbpos startp) | |
| 442 | 8180 { |
| 8181 return start_end_of_last_line (w, startp, 1, 1); | |
| 8182 } | |
| 8183 | |
| 8184 | |
| 428 | 8185 /* For window W, what does the starting position have to be so that |
| 8186 the line containing POINT will cover pixel position PIXPOS. */ | |
| 8187 | |
| 665 | 8188 Charbpos |
| 8189 start_with_line_at_pixpos (struct window *w, Charbpos point, int pixpos) | |
| 428 | 8190 { |
| 8191 struct buffer *b = XBUFFER (w->buffer); | |
| 8192 int cur_elt; | |
| 665 | 8193 Charbpos cur_pos, prev_pos = point; |
| 428 | 8194 int point_line_height; |
| 8195 int pixheight = pixpos - WINDOW_TEXT_TOP (w); | |
| 8196 | |
| 8197 validate_line_start_cache (w); | |
| 8198 w->line_cache_validation_override++; | |
| 8199 | |
| 8200 cur_elt = point_in_line_start_cache (w, point, 0); | |
| 8201 /* #### See comment in update_line_start_cache about big minibuffers. */ | |
| 8202 if (cur_elt < 0) | |
| 8203 { | |
| 8204 w->line_cache_validation_override--; | |
| 8205 return point; | |
| 8206 } | |
| 8207 | |
| 8208 point_line_height = Dynarr_atp (w->line_start_cache, cur_elt)->height; | |
| 8209 | |
| 8210 while (1) | |
| 8211 { | |
| 8212 cur_pos = Dynarr_atp (w->line_start_cache, cur_elt)->start; | |
| 8213 | |
| 8214 pixheight -= Dynarr_atp (w->line_start_cache, cur_elt)->height; | |
| 8215 | |
| 8216 /* Do not take into account the value of vertical_clip here. | |
| 4187 | 8217 That is the responsibility of the calling functions. */ |
| 428 | 8218 if (pixheight < 0) |
| 8219 { | |
| 8220 w->line_cache_validation_override--; | |
| 8221 if (-pixheight > point_line_height) | |
| 8222 /* We can't make the target line cover pixpos, so put it | |
| 8223 above pixpos. That way it will at least be visible. */ | |
| 8224 return prev_pos; | |
| 8225 else | |
| 8226 return cur_pos; | |
| 8227 } | |
| 8228 | |
| 8229 cur_elt--; | |
| 8230 while (cur_elt < 0) | |
| 8231 { | |
| 665 | 8232 Charbpos from, to; |
| 428 | 8233 int win_char_height; |
| 8234 | |
| 8235 if (cur_pos <= BUF_BEGV (b)) | |
| 8236 { | |
| 8237 w->line_cache_validation_override--; | |
| 8238 return BUF_BEGV (b); | |
| 8239 } | |
| 8240 | |
| 8241 win_char_height = window_char_height (w, 0); | |
| 8242 if (!win_char_height) | |
| 8243 win_char_height = 1; | |
| 8244 | |
| 8245 from = find_next_newline_no_quit (b, cur_pos, -win_char_height); | |
| 8246 to = line_start_cache_end (w); | |
| 8247 update_line_start_cache (w, from, to, point, 0); | |
| 8248 | |
| 8249 cur_elt = point_in_line_start_cache (w, cur_pos, 2) - 1; | |
| 8250 assert (cur_elt >= -1); | |
| 8251 /* This used to be cur_elt>=0 under the assumption that if | |
| 8252 point is in the top line and not at BUF_BEGV, then | |
| 434 | 8253 setting the window_start to a newline before the start of |
| 428 | 8254 the first line will always cause scrolling. |
| 8255 | |
| 8256 However in my (jv) opinion this is wrong. That new line | |
| 8257 can be hidden in various ways: invisible extents, an | |
| 8258 explicit window-start not at a newline character etc. | |
| 8259 The existence of those are indeed known to create crashes | |
| 8260 on that assert. So we have no option but to continue the | |
| 8261 search if we found point at the top of the line_start_cache | |
| 8262 again. */ | |
| 4967 | 8263 cur_pos = Dynarr_begin (w->line_start_cache)->start; |
| 428 | 8264 } |
| 8265 prev_pos = cur_pos; | |
| 8266 } | |
| 8267 } | |
| 8268 | |
| 8269 /* For window W, what does the starting position have to be so that | |
| 8270 the line containing point is on display line LINE. If LINE is | |
| 8271 positive it is considered to be the number of lines from the top of | |
| 8272 the window (0 is the top line). If it is negative the number is | |
| 8273 considered to be the number of lines from the bottom (-1 is the | |
| 8274 bottom line). */ | |
| 8275 | |
| 665 | 8276 Charbpos |
| 8277 start_with_point_on_display_line (struct window *w, Charbpos point, int line) | |
| 428 | 8278 { |
| 8279 validate_line_start_cache (w); | |
| 8280 w->line_cache_validation_override++; | |
| 8281 | |
| 8282 if (line >= 0) | |
| 8283 { | |
| 8284 int cur_elt = point_in_line_start_cache (w, point, line); | |
| 8285 | |
| 8286 if (cur_elt - line < 0) | |
| 8287 cur_elt = 0; /* Hit the top */ | |
| 8288 else | |
| 8289 cur_elt -= line; | |
| 8290 | |
| 8291 w->line_cache_validation_override--; | |
| 8292 return Dynarr_atp (w->line_start_cache, cur_elt)->start; | |
| 8293 } | |
| 8294 else | |
| 8295 { | |
| 8296 /* The calculated value of pixpos is correct for the bottom line | |
| 4187 | 8297 or what we want when line is -1. Therefore we subtract one |
| 8298 because we have already handled one line. */ | |
| 428 | 8299 int new_line = -line - 1; |
| 8300 int cur_elt = point_in_line_start_cache (w, point, new_line); | |
| 8301 int pixpos = WINDOW_TEXT_BOTTOM (w); | |
| 665 | 8302 Charbpos retval, search_point; |
| 428 | 8303 |
| 8304 /* If scroll_on_clipped_lines is false, the last "visible" line of | |
| 4187 | 8305 the window covers the pixel at WINDOW_TEXT_BOTTOM (w) - 1. |
| 8306 If s_o_c_l is true, then we don't want to count a clipped | |
| 8307 line, so back up from the bottom by the height of the line | |
| 8308 containing point. */ | |
| 428 | 8309 if (scroll_on_clipped_lines) |
| 8310 pixpos -= Dynarr_atp (w->line_start_cache, cur_elt)->height; | |
| 8311 else | |
| 8312 pixpos -= 1; | |
| 8313 | |
| 8314 if (cur_elt + new_line >= Dynarr_length (w->line_start_cache)) | |
| 8315 { | |
| 8316 /* Hit the bottom of the buffer. */ | |
| 8317 int adjustment = | |
| 8318 (cur_elt + new_line) - Dynarr_length (w->line_start_cache) + 1; | |
| 8319 Lisp_Object window; | |
| 8320 int defheight; | |
| 8321 | |
| 793 | 8322 window = wrap_window (w); |
|
5047
07dcc7000bbf
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Ben Wing <ben@xemacs.org>
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5043
diff
changeset
|
8323 default_face_width_and_height (window, 0, &defheight); |
| 428 | 8324 |
| 8325 cur_elt = Dynarr_length (w->line_start_cache) - 1; | |
| 8326 | |
| 8327 pixpos -= (adjustment * defheight); | |
| 8328 if (pixpos < WINDOW_TEXT_TOP (w)) | |
| 8329 pixpos = WINDOW_TEXT_TOP (w); | |
| 8330 } | |
| 8331 else | |
| 8332 cur_elt = cur_elt + new_line; | |
| 8333 | |
| 8334 search_point = Dynarr_atp (w->line_start_cache, cur_elt)->start; | |
| 8335 | |
| 8336 retval = start_with_line_at_pixpos (w, search_point, pixpos); | |
| 8337 w->line_cache_validation_override--; | |
| 8338 return retval; | |
| 8339 } | |
| 8340 } | |
| 8341 | |
| 8342 /* This is used to speed up vertical scrolling by caching the known | |
| 8343 buffer starting positions for display lines. This allows the | |
| 8344 scrolling routines to avoid costly calls to regenerate_window. If | |
| 8345 NO_REGEN is true then it will only add the values in the DESIRED | |
| 8346 display structs which are in the given range. | |
| 8347 | |
| 8348 Note also that the FROM/TO values are minimums. It is possible | |
| 8349 that this function will actually add information outside of the | |
| 8350 lines containing those positions. This can't hurt but it could | |
| 8351 possibly help. | |
| 8352 | |
| 8353 #### We currently force the cache to have only 1 contiguous region. | |
| 8354 It might help to make the cache a dynarr of caches so that we can | |
| 8355 cover more areas. This might, however, turn out to be a lot of | |
| 8356 overhead for too little gain. */ | |
| 8357 | |
| 8358 static void | |
| 665 | 8359 update_line_start_cache (struct window *w, Charbpos from, Charbpos to, |
| 8360 Charbpos point, int no_regen) | |
| 428 | 8361 { |
| 8362 struct buffer *b = XBUFFER (w->buffer); | |
| 8363 line_start_cache_dynarr *cache = w->line_start_cache; | |
| 665 | 8364 Charbpos low_bound, high_bound; |
| 428 | 8365 |
| 8366 validate_line_start_cache (w); | |
| 8367 w->line_cache_validation_override++; | |
| 8368 | |
| 8369 if (from < BUF_BEGV (b)) | |
| 8370 from = BUF_BEGV (b); | |
| 8371 if (to > BUF_ZV (b)) | |
| 8372 to = BUF_ZV (b); | |
| 8373 | |
| 8374 if (from > to) | |
| 8375 { | |
| 8376 w->line_cache_validation_override--; | |
| 8377 return; | |
| 8378 } | |
| 8379 | |
| 8380 if (Dynarr_length (cache)) | |
| 8381 { | |
| 8382 low_bound = line_start_cache_start (w); | |
| 8383 high_bound = line_start_cache_end (w); | |
| 8384 | |
| 8385 /* Check to see if the desired range is already in the cache. */ | |
| 8386 if (from >= low_bound && to <= high_bound) | |
| 8387 { | |
| 8388 w->line_cache_validation_override--; | |
| 8389 return; | |
| 8390 } | |
| 8391 | |
| 8392 /* Check to make sure that the desired range is adjacent to the | |
| 8393 current cache. If not, invalidate the cache. */ | |
| 8394 if (to < low_bound || from > high_bound) | |
| 8395 { | |
| 8396 Dynarr_reset (cache); | |
| 8397 low_bound = high_bound = -1; | |
| 8398 } | |
| 8399 } | |
| 8400 else | |
| 8401 { | |
| 8402 low_bound = high_bound = -1; | |
| 8403 } | |
| 8404 | |
| 8405 w->line_cache_last_updated = make_int (BUF_MODIFF (b)); | |
| 8406 | |
| 8407 /* This could be integrated into the next two sections, but it is easier | |
| 8408 to follow what's going on by having it separate. */ | |
| 8409 if (no_regen) | |
| 8410 { | |
| 665 | 8411 Charbpos start, end; |
| 428 | 8412 |
| 8413 update_internal_cache_list (w, DESIRED_DISP); | |
| 8414 if (!Dynarr_length (internal_cache)) | |
| 8415 { | |
| 8416 w->line_cache_validation_override--; | |
| 8417 return; | |
| 8418 } | |
| 8419 | |
|
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Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
8420 start = Dynarr_begin (internal_cache)->start; |
|
91b3d00e717f
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Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
8421 end = Dynarr_lastp (internal_cache)->end; |
| 428 | 8422 |
| 8423 /* We aren't allowed to generate additional information to fill in | |
| 4187 | 8424 gaps, so if the DESIRED structs don't overlap the cache, reset the |
| 8425 cache. */ | |
| 428 | 8426 if (Dynarr_length (cache)) |
| 8427 { | |
| 8428 if (end < low_bound || start > high_bound) | |
| 8429 Dynarr_reset (cache); | |
| 8430 | |
| 8431 /* #### What should really happen if what we are doing is | |
| 4187 | 8432 extending a line (the last line)? */ |
| 428 | 8433 if (Dynarr_length (cache) == 1 |
| 8434 && Dynarr_length (internal_cache) == 1) | |
| 8435 Dynarr_reset (cache); | |
| 8436 } | |
| 8437 | |
| 8438 if (!Dynarr_length (cache)) | |
| 8439 { | |
| 4967 | 8440 Dynarr_add_many (cache, Dynarr_begin (internal_cache), |
| 428 | 8441 Dynarr_length (internal_cache)); |
| 8442 w->line_cache_validation_override--; | |
| 8443 return; | |
| 8444 } | |
| 8445 | |
| 8446 /* An extra check just in case the calling function didn't pass in | |
| 4187 | 8447 the bounds of the DESIRED structs in the first place. */ |
| 428 | 8448 if (start >= low_bound && end <= high_bound) |
| 8449 { | |
| 8450 w->line_cache_validation_override--; | |
| 8451 return; | |
| 8452 } | |
| 8453 | |
| 8454 /* At this point we know that the internal cache partially overlaps | |
| 4187 | 8455 the main cache. */ |
| 428 | 8456 if (start < low_bound) |
| 8457 { | |
| 8458 int ic_elt = Dynarr_length (internal_cache) - 1; | |
| 8459 while (ic_elt >= 0) | |
| 8460 { | |
| 8461 if (Dynarr_atp (internal_cache, ic_elt)->start < low_bound) | |
| 8462 break; | |
| 8463 else | |
| 8464 ic_elt--; | |
| 8465 } | |
| 8466 | |
| 8467 if (!(ic_elt >= 0)) | |
| 8468 { | |
| 8469 Dynarr_reset (cache); | |
| 4967 | 8470 Dynarr_add_many (cache, Dynarr_begin (internal_cache), |
| 428 | 8471 Dynarr_length (internal_cache)); |
| 8472 w->line_cache_validation_override--; | |
| 8473 return; | |
| 8474 } | |
| 8475 | |
| 5038 | 8476 Dynarr_prepend_many (cache, Dynarr_begin (internal_cache), |
| 428 | 8477 ic_elt + 1); |
| 8478 } | |
| 8479 | |
| 8480 if (end > high_bound) | |
| 8481 { | |
| 8482 int ic_elt = 0; | |
| 8483 | |
| 8484 while (ic_elt < Dynarr_length (internal_cache)) | |
| 8485 { | |
| 8486 if (Dynarr_atp (internal_cache, ic_elt)->start > high_bound) | |
| 8487 break; | |
| 8488 else | |
| 8489 ic_elt++; | |
| 8490 } | |
| 8491 | |
| 8492 if (!(ic_elt < Dynarr_length (internal_cache))) | |
| 8493 { | |
| 8494 Dynarr_reset (cache); | |
| 4967 | 8495 Dynarr_add_many (cache, Dynarr_begin (internal_cache), |
| 428 | 8496 Dynarr_length (internal_cache)); |
| 8497 w->line_cache_validation_override--; | |
| 8498 return; | |
| 8499 } | |
| 8500 | |
| 8501 Dynarr_add_many (cache, Dynarr_atp (internal_cache, ic_elt), | |
| 8502 Dynarr_length (internal_cache) - ic_elt); | |
| 8503 } | |
| 8504 | |
| 8505 w->line_cache_validation_override--; | |
| 8506 return; | |
| 8507 } | |
| 8508 | |
| 8509 if (!Dynarr_length (cache) || from < low_bound) | |
| 8510 { | |
| 665 | 8511 Charbpos startp = find_next_newline_no_quit (b, from, -1); |
| 428 | 8512 int marker = 0; |
| 8513 int old_lb = low_bound; | |
| 8514 | |
| 8515 while (startp < old_lb || low_bound == -1) | |
| 8516 { | |
| 8517 int ic_elt; | |
| 4187 | 8518 Charbpos new_startp; |
| 428 | 8519 |
| 8520 regenerate_window (w, startp, point, CMOTION_DISP); | |
| 8521 update_internal_cache_list (w, CMOTION_DISP); | |
| 8522 | |
| 8523 /* If this assert is triggered then regenerate_window failed | |
| 4187 | 8524 to layout a single line. This is not possible since we |
| 442 | 8525 force at least a single line to be layout for CMOTION_DISP */ |
| 8526 assert (Dynarr_length (internal_cache)); | |
| 4967 | 8527 assert (startp == Dynarr_begin (internal_cache)->start); |
| 428 | 8528 |
| 8529 ic_elt = Dynarr_length (internal_cache) - 1; | |
| 8530 if (low_bound != -1) | |
| 8531 { | |
| 8532 while (ic_elt >= 0) | |
| 8533 { | |
| 8534 if (Dynarr_atp (internal_cache, ic_elt)->start < old_lb) | |
| 8535 break; | |
| 8536 else | |
| 8537 ic_elt--; | |
| 8538 } | |
| 8539 } | |
| 8540 assert (ic_elt >= 0); | |
| 8541 | |
| 8542 new_startp = Dynarr_atp (internal_cache, ic_elt)->end + 1; | |
| 8543 | |
| 4187 | 8544 /* |
| 8545 * Handle invisible text properly: | |
| 8546 * If the last line we're inserting has the same end as the | |
| 8547 * line before which it will be added, merge the two lines. | |
| 8548 */ | |
| 8549 if (Dynarr_length (cache) && | |
| 8550 Dynarr_atp (internal_cache, ic_elt)->end == | |
| 8551 Dynarr_atp (cache, marker)->end) | |
| 8552 { | |
| 8553 Dynarr_atp (cache, marker)->start | |
| 8554 = Dynarr_atp (internal_cache, ic_elt)->start; | |
| 8555 Dynarr_atp (cache, marker)->height | |
| 8556 = Dynarr_atp (internal_cache, ic_elt)->height; | |
| 8557 ic_elt--; | |
| 8558 } | |
| 8559 | |
| 8560 if (ic_elt >= 0) /* we still have lines to add.. */ | |
| 8561 { | |
| 4967 | 8562 Dynarr_insert_many (cache, Dynarr_begin (internal_cache), |
| 4187 | 8563 ic_elt + 1, marker); |
| 8564 marker += (ic_elt + 1); | |
| 8565 } | |
| 428 | 8566 |
| 8567 if (startp < low_bound || low_bound == -1) | |
| 8568 low_bound = startp; | |
| 8569 startp = new_startp; | |
| 8570 if (startp > BUF_ZV (b)) | |
| 8571 { | |
| 8572 w->line_cache_validation_override--; | |
| 8573 return; | |
| 8574 } | |
| 8575 } | |
| 8576 } | |
| 8577 | |
| 8578 assert (Dynarr_length (cache)); | |
| 8579 assert (from >= low_bound); | |
| 8580 | |
| 8581 /* Readjust the high_bound to account for any changes made while | |
| 8582 correcting the low_bound. */ | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
8583 high_bound = Dynarr_lastp (cache)->end; |
| 428 | 8584 |
| 8585 if (to > high_bound) | |
| 8586 { | |
|
4844
91b3d00e717f
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Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
8587 Charbpos startp = Dynarr_lastp (cache)->end + 1; |
| 428 | 8588 |
| 8589 do | |
| 8590 { | |
| 8591 regenerate_window (w, startp, point, CMOTION_DISP); | |
| 8592 update_internal_cache_list (w, CMOTION_DISP); | |
| 8593 | |
| 8594 /* See comment above about regenerate_window failing. */ | |
| 8595 assert (Dynarr_length (internal_cache)); | |
| 8596 | |
| 4967 | 8597 Dynarr_add_many (cache, Dynarr_begin (internal_cache), |
| 428 | 8598 Dynarr_length (internal_cache)); |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
8599 high_bound = Dynarr_lastp (cache)->end; |
| 428 | 8600 startp = high_bound + 1; |
| 8601 } | |
| 8602 while (to > high_bound); | |
| 8603 } | |
| 8604 | |
| 8605 w->line_cache_validation_override--; | |
| 8606 assert (to <= high_bound); | |
| 8607 } | |
| 8608 | |
| 8609 | |
| 8610 /* Given x and y coordinates in characters, relative to a window, | |
| 8611 return the pixel location corresponding to those coordinates. The | |
| 8612 pixel location returned is the center of the given character | |
| 8613 position. The pixel values are generated relative to the window, | |
| 8614 not the frame. | |
| 8615 | |
| 8616 The modeline is considered to be part of the window. */ | |
| 8617 | |
| 8618 void | |
| 8619 glyph_to_pixel_translation (struct window *w, int char_x, int char_y, | |
| 8620 int *pix_x, int *pix_y) | |
| 8621 { | |
| 8622 display_line_dynarr *dla = window_display_lines (w, CURRENT_DISP); | |
| 8623 int num_disp_lines, modeline; | |
| 8624 Lisp_Object window; | |
| 8625 int defheight, defwidth; | |
| 8626 | |
| 793 | 8627 window = wrap_window (w); |
|
5047
07dcc7000bbf
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Ben Wing <ben@xemacs.org>
parents:
5043
diff
changeset
|
8628 default_face_width_and_height (window, &defwidth, &defheight); |
| 428 | 8629 |
| 8630 /* If we get a bogus value indicating somewhere above or to the left of | |
| 8631 the window, use the first window line or character position | |
| 8632 instead. */ | |
| 8633 if (char_y < 0) | |
| 8634 char_y = 0; | |
| 8635 if (char_x < 0) | |
| 8636 char_x = 0; | |
| 8637 | |
| 8638 num_disp_lines = Dynarr_length (dla); | |
| 8639 modeline = 0; | |
| 8640 if (num_disp_lines) | |
| 8641 { | |
| 4967 | 8642 if (Dynarr_begin (dla)->modeline) |
| 428 | 8643 { |
| 8644 num_disp_lines--; | |
| 8645 modeline = 1; | |
| 8646 } | |
| 8647 } | |
| 8648 | |
| 8649 /* First check if the y position intersects the display lines. */ | |
| 8650 if (char_y < num_disp_lines) | |
| 8651 { | |
| 8652 struct display_line *dl = Dynarr_atp (dla, char_y + modeline); | |
| 8653 struct display_block *db = get_display_block_from_line (dl, TEXT); | |
| 8654 | |
| 8655 *pix_y = (dl->ypos - dl->ascent + | |
| 647 | 8656 ((dl->ascent + dl->descent - dl->clip) >> 1)); |
| 428 | 8657 |
| 8658 if (char_x < Dynarr_length (db->runes)) | |
| 8659 { | |
| 8660 struct rune *rb = Dynarr_atp (db->runes, char_x); | |
| 8661 | |
| 8662 *pix_x = rb->xpos + (rb->width >> 1); | |
| 8663 } | |
| 8664 else | |
| 8665 { | |
| 8666 int last_rune = Dynarr_length (db->runes) - 1; | |
| 8667 struct rune *rb = Dynarr_atp (db->runes, last_rune); | |
| 8668 | |
| 8669 char_x -= last_rune; | |
| 8670 | |
| 8671 *pix_x = rb->xpos + rb->width; | |
| 8672 *pix_x += ((char_x - 1) * defwidth); | |
| 8673 *pix_x += (defwidth >> 1); | |
| 8674 } | |
| 8675 } | |
| 8676 else | |
| 8677 { | |
| 8678 /* It didn't intersect, so extrapolate. #### For now, we include the | |
| 8679 modeline in this since we don't have true character positions in | |
| 8680 it. */ | |
| 8681 | |
| 8682 if (!Dynarr_length (w->face_cachels)) | |
| 8683 reset_face_cachels (w); | |
| 8684 | |
| 8685 char_y -= num_disp_lines; | |
| 8686 | |
| 8687 if (Dynarr_length (dla)) | |
| 8688 { | |
|
4844
91b3d00e717f
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Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
8689 struct display_line *dl = Dynarr_lastp (dla); |
| 428 | 8690 *pix_y = dl->ypos + dl->descent - dl->clip; |
| 8691 } | |
| 8692 else | |
| 8693 *pix_y = WINDOW_TEXT_TOP (w); | |
| 8694 | |
| 8695 *pix_y += (char_y * defheight); | |
| 8696 *pix_y += (defheight >> 1); | |
| 8697 | |
| 8698 *pix_x = WINDOW_TEXT_LEFT (w); | |
| 8699 /* Don't adjust by one because this is still the unadjusted value. */ | |
| 8700 *pix_x += (char_x * defwidth); | |
| 8701 *pix_x += (defwidth >> 1); | |
| 8702 } | |
| 8703 | |
| 8704 if (*pix_x > w->pixel_left + w->pixel_width) | |
| 8705 *pix_x = w->pixel_left + w->pixel_width; | |
| 8706 if (*pix_y > w->pixel_top + w->pixel_height) | |
| 8707 *pix_y = w->pixel_top + w->pixel_height; | |
| 8708 | |
| 8709 *pix_x -= w->pixel_left; | |
| 8710 *pix_y -= w->pixel_top; | |
| 8711 } | |
| 8712 | |
| 8713 /* Given a display line and a position, determine if there is a glyph | |
| 8714 there and return information about it if there is. */ | |
| 8715 | |
| 8716 static void | |
| 8717 get_position_object (struct display_line *dl, Lisp_Object *obj1, | |
| 8718 Lisp_Object *obj2, int x_coord, int *low_x_coord, | |
| 8719 int *high_x_coord) | |
| 8720 { | |
| 8721 struct display_block *db; | |
| 8722 int elt; | |
| 8723 int block = | |
| 8724 get_next_display_block (dl->bounds, dl->display_blocks, x_coord, 0); | |
| 8725 | |
| 8726 /* We use get_next_display_block to get the actual display block | |
| 8727 that would be displayed at x_coord. */ | |
| 8728 | |
| 8729 if (block == NO_BLOCK) | |
| 8730 return; | |
| 8731 else | |
| 8732 db = Dynarr_atp (dl->display_blocks, block); | |
| 8733 | |
| 8734 for (elt = 0; elt < Dynarr_length (db->runes); elt++) | |
| 8735 { | |
| 8736 struct rune *rb = Dynarr_atp (db->runes, elt); | |
| 8737 | |
| 8738 if (rb->xpos <= x_coord && x_coord < (rb->xpos + rb->width)) | |
| 8739 { | |
| 8740 if (rb->type == RUNE_DGLYPH) | |
| 8741 { | |
| 8742 *obj1 = rb->object.dglyph.glyph; | |
| 8743 *obj2 = rb->object.dglyph.extent; | |
| 8744 } | |
| 8745 else | |
| 8746 { | |
| 8747 *obj1 = Qnil; | |
| 8748 *obj2 = Qnil; | |
| 8749 } | |
| 8750 | |
| 8751 if (low_x_coord) | |
| 8752 *low_x_coord = rb->xpos; | |
| 8753 if (high_x_coord) | |
| 8754 *high_x_coord = rb->xpos + rb->width; | |
| 8755 | |
| 8756 return; | |
| 8757 } | |
| 8758 } | |
| 8759 } | |
| 8760 | |
| 8761 #define UPDATE_CACHE_RETURN \ | |
| 8762 do { \ | |
| 8763 d->pixel_to_glyph_cache.valid = 1; \ | |
| 8764 d->pixel_to_glyph_cache.low_x_coord = low_x_coord; \ | |
| 8765 d->pixel_to_glyph_cache.high_x_coord = high_x_coord; \ | |
| 8766 d->pixel_to_glyph_cache.low_y_coord = low_y_coord; \ | |
| 8767 d->pixel_to_glyph_cache.high_y_coord = high_y_coord; \ | |
| 8768 d->pixel_to_glyph_cache.frame = f; \ | |
| 8769 d->pixel_to_glyph_cache.col = *col; \ | |
| 8770 d->pixel_to_glyph_cache.row = *row; \ | |
| 8771 d->pixel_to_glyph_cache.obj_x = *obj_x; \ | |
| 8772 d->pixel_to_glyph_cache.obj_y = *obj_y; \ | |
| 8773 d->pixel_to_glyph_cache.w = *w; \ | |
| 5090 | 8774 d->pixel_to_glyph_cache.charpos = *charpos; \ |
| 428 | 8775 d->pixel_to_glyph_cache.closest = *closest; \ |
| 8776 d->pixel_to_glyph_cache.modeline_closest = *modeline_closest; \ | |
| 8777 d->pixel_to_glyph_cache.obj1 = *obj1; \ | |
| 8778 d->pixel_to_glyph_cache.obj2 = *obj2; \ | |
| 8779 d->pixel_to_glyph_cache.retval = position; \ | |
| 8780 RETURN_SANS_WARNINGS position; \ | |
| 8781 } while (0) | |
| 8782 | |
| 8783 /* Given x and y coordinates in pixels relative to a frame, return | |
| 8784 information about what is located under those coordinates. | |
| 8785 | |
| 8786 The return value will be one of: | |
| 8787 | |
| 8788 OVER_TOOLBAR: over one of the 4 frame toolbars | |
| 8789 OVER_MODELINE: over a modeline | |
| 8790 OVER_BORDER: over an internal border | |
| 5090 | 8791 OVER_V_DIVIDER: over a vertical divider between windows (used as a |
| 8792 grab bar for resizing) | |
| 428 | 8793 OVER_NOTHING: over the text area, but not over text |
| 8794 OVER_OUTSIDE: outside of the frame border | |
| 8795 OVER_TEXT: over text in the text area | |
| 8796 | |
| 5090 | 8797 #### GEOM! We need to also have an OVER_GUTTER, OVER_SCROLLBAR and |
| 8798 OVER_DEAD_BOX. | |
| 8799 | |
| 428 | 8800 OBJ1 is one of |
| 8801 | |
| 8802 -- a toolbar button | |
| 8803 -- a glyph | |
| 8804 -- nil if the coordinates are not over a glyph or a toolbar button. | |
| 8805 | |
| 8806 OBJ2 is one of | |
| 8807 | |
| 8808 -- an extent, if the coordinates are over a glyph in the text area | |
| 8809 -- nil otherwise. | |
| 8810 | |
| 8811 If the coordinates are over a glyph, OBJ_X and OBJ_Y give the | |
| 8812 equivalent coordinates relative to the upper-left corner of the glyph. | |
| 8813 | |
| 8814 If the coordinates are over a character, OBJ_X and OBJ_Y give the | |
| 8815 equivalent coordinates relative to the upper-left corner of the character. | |
| 8816 | |
| 8817 Otherwise, OBJ_X and OBJ_Y are undefined. | |
| 8818 */ | |
| 8819 | |
| 8820 int | |
| 8821 pixel_to_glyph_translation (struct frame *f, int x_coord, int y_coord, | |
| 8822 int *col, int *row, int *obj_x, int *obj_y, | |
| 826 | 8823 struct window **w, Charbpos *charpos, |
| 665 | 8824 Charbpos *closest, Charcount *modeline_closest, |
| 428 | 8825 Lisp_Object *obj1, Lisp_Object *obj2) |
| 8826 { | |
| 8827 struct device *d; | |
| 8828 struct pixel_to_glyph_translation_cache *cache; | |
| 8829 Lisp_Object window; | |
| 8830 int frm_left, frm_right, frm_top, frm_bottom; | |
| 8831 int low_x_coord, high_x_coord, low_y_coord, high_y_coord; | |
| 8832 int position = OVER_NOTHING; | |
| 8833 int device_check_failed = 0; | |
| 8834 display_line_dynarr *dla; | |
| 8835 | |
| 8836 /* This is a safety valve in case this got called with a frame in | |
| 8837 the middle of being deleted. */ | |
| 8838 if (!DEVICEP (f->device) || !DEVICE_LIVE_P (XDEVICE (f->device))) | |
| 8839 { | |
| 8840 device_check_failed = 1; | |
| 8841 d = NULL, cache = NULL; /* Warning suppression */ | |
| 8842 } | |
| 8843 else | |
| 8844 { | |
| 8845 d = XDEVICE (f->device); | |
| 8846 cache = &d->pixel_to_glyph_cache; | |
| 8847 } | |
| 8848 | |
| 8849 if (!device_check_failed | |
| 8850 && cache->valid | |
| 8851 && cache->frame == f | |
| 8852 && cache->low_x_coord <= x_coord | |
| 8853 && cache->high_x_coord > x_coord | |
| 8854 && cache->low_y_coord <= y_coord | |
| 8855 && cache->high_y_coord > y_coord) | |
| 8856 { | |
| 8857 *col = cache->col; | |
| 8858 *row = cache->row; | |
| 8859 *obj_x = cache->obj_x; | |
| 8860 *obj_y = cache->obj_y; | |
| 8861 *w = cache->w; | |
| 826 | 8862 *charpos = cache->charpos; |
| 428 | 8863 *closest = cache->closest; |
| 8864 *modeline_closest = cache->modeline_closest; | |
| 8865 *obj1 = cache->obj1; | |
| 8866 *obj2 = cache->obj2; | |
| 8867 | |
| 8868 return cache->retval; | |
| 8869 } | |
| 8870 else | |
| 8871 { | |
| 8872 *col = 0; | |
| 8873 *row = 0; | |
| 8874 *obj_x = 0; | |
| 8875 *obj_y = 0; | |
| 8876 *w = 0; | |
| 826 | 8877 *charpos = 0; |
| 428 | 8878 *closest = 0; |
| 8879 *modeline_closest = -1; | |
| 8880 *obj1 = Qnil; | |
| 8881 *obj2 = Qnil; | |
| 8882 | |
| 8883 low_x_coord = x_coord; | |
| 8884 high_x_coord = x_coord + 1; | |
| 8885 low_y_coord = y_coord; | |
| 8886 high_y_coord = y_coord + 1; | |
| 8887 } | |
| 8888 | |
| 8889 if (device_check_failed) | |
| 8890 return OVER_NOTHING; | |
| 8891 | |
| 5090 | 8892 /* #### GEOM! The gutter is just inside of this. We should also have an |
| 8893 OVER_GUTTER return value to indicate that we're over a gutter. See | |
| 8894 above. */ | |
| 8895 frm_left = FRAME_LEFT_INTERNAL_BORDER_END (f); | |
| 8896 frm_right = FRAME_RIGHT_INTERNAL_BORDER_START (f); | |
| 8897 frm_top = FRAME_TOP_INTERNAL_BORDER_END (f); | |
| 8898 frm_bottom = FRAME_BOTTOM_INTERNAL_BORDER_START (f); | |
| 428 | 8899 |
| 8900 /* Check if the mouse is outside of the text area actually used by | |
| 8901 redisplay. */ | |
| 8902 if (y_coord < frm_top) | |
| 8903 { | |
| 5090 | 8904 if (y_coord >= FRAME_TOP_INTERNAL_BORDER_START (f)) |
| 8905 { | |
| 8906 low_y_coord = FRAME_TOP_INTERNAL_BORDER_START (f); | |
| 428 | 8907 high_y_coord = frm_top; |
| 8908 position = OVER_BORDER; | |
| 8909 } | |
| 8910 else if (y_coord >= 0) | |
| 8911 { | |
| 8912 low_y_coord = 0; | |
| 5090 | 8913 high_y_coord = FRAME_TOP_INTERNAL_BORDER_START (f); |
| 428 | 8914 position = OVER_TOOLBAR; |
| 8915 } | |
| 8916 else | |
| 8917 { | |
| 8918 low_y_coord = y_coord; | |
| 8919 high_y_coord = 0; | |
| 8920 position = OVER_OUTSIDE; | |
| 8921 } | |
| 8922 } | |
| 8923 else if (y_coord >= frm_bottom) | |
| 8924 { | |
| 5090 | 8925 if (y_coord < FRAME_BOTTOM_INTERNAL_BORDER_END (f)) |
| 428 | 8926 { |
| 8927 low_y_coord = frm_bottom; | |
| 5090 | 8928 high_y_coord = FRAME_BOTTOM_INTERNAL_BORDER_END (f); |
| 428 | 8929 position = OVER_BORDER; |
| 8930 } | |
| 8931 else if (y_coord < FRAME_PIXHEIGHT (f)) | |
| 8932 { | |
| 5090 | 8933 low_y_coord = FRAME_BOTTOM_INTERNAL_BORDER_END (f); |
| 428 | 8934 high_y_coord = FRAME_PIXHEIGHT (f); |
| 8935 position = OVER_TOOLBAR; | |
| 8936 } | |
| 8937 else | |
| 8938 { | |
| 8939 low_y_coord = FRAME_PIXHEIGHT (f); | |
| 8940 high_y_coord = y_coord; | |
| 8941 position = OVER_OUTSIDE; | |
| 8942 } | |
| 8943 } | |
| 8944 | |
| 8945 if (position != OVER_TOOLBAR && position != OVER_BORDER) | |
| 8946 { | |
| 8947 if (x_coord < frm_left) | |
| 8948 { | |
| 5090 | 8949 if (x_coord >= FRAME_LEFT_INTERNAL_BORDER_START (f)) |
| 8950 { | |
| 8951 low_x_coord = FRAME_LEFT_INTERNAL_BORDER_START (f); | |
| 428 | 8952 high_x_coord = frm_left; |
| 8953 position = OVER_BORDER; | |
| 8954 } | |
| 8955 else if (x_coord >= 0) | |
| 8956 { | |
| 8957 low_x_coord = 0; | |
| 5090 | 8958 high_x_coord = FRAME_LEFT_INTERNAL_BORDER_START (f); |
| 428 | 8959 position = OVER_TOOLBAR; |
| 8960 } | |
| 8961 else | |
| 8962 { | |
| 8963 low_x_coord = x_coord; | |
| 8964 high_x_coord = 0; | |
| 8965 position = OVER_OUTSIDE; | |
| 8966 } | |
| 8967 } | |
| 8968 else if (x_coord >= frm_right) | |
| 8969 { | |
| 5090 | 8970 if (x_coord < FRAME_RIGHT_INTERNAL_BORDER_END (f)) |
| 428 | 8971 { |
| 8972 low_x_coord = frm_right; | |
| 5090 | 8973 high_x_coord = FRAME_RIGHT_INTERNAL_BORDER_END (f); |
| 428 | 8974 position = OVER_BORDER; |
| 8975 } | |
| 8976 else if (x_coord < FRAME_PIXWIDTH (f)) | |
| 8977 { | |
| 5090 | 8978 low_x_coord = FRAME_RIGHT_INTERNAL_BORDER_END (f); |
| 428 | 8979 high_x_coord = FRAME_PIXWIDTH (f); |
| 8980 position = OVER_TOOLBAR; | |
| 8981 } | |
| 8982 else | |
| 8983 { | |
| 8984 low_x_coord = FRAME_PIXWIDTH (f); | |
| 8985 high_x_coord = x_coord; | |
| 8986 position = OVER_OUTSIDE; | |
| 8987 } | |
| 8988 } | |
| 8989 } | |
| 8990 | |
| 8991 #ifdef HAVE_TOOLBARS | |
| 8992 if (position == OVER_TOOLBAR) | |
| 8993 { | |
| 8994 *obj1 = toolbar_button_at_pixpos (f, x_coord, y_coord); | |
| 8995 *obj2 = Qnil; | |
| 8996 *w = 0; | |
| 8997 UPDATE_CACHE_RETURN; | |
| 8998 } | |
| 8999 #endif /* HAVE_TOOLBARS */ | |
| 9000 | |
| 9001 /* We still have to return the window the pointer is next to and its | |
| 9002 relative y position even if it is outside the x boundary. */ | |
| 9003 if (x_coord < frm_left) | |
| 9004 x_coord = frm_left; | |
| 9005 else if (x_coord > frm_right) | |
| 9006 x_coord = frm_right; | |
| 9007 | |
| 9008 /* Same in reverse. */ | |
| 9009 if (y_coord < frm_top) | |
| 9010 y_coord = frm_top; | |
| 9011 else if (y_coord > frm_bottom) | |
| 9012 y_coord = frm_bottom; | |
| 9013 | |
| 9014 /* Find what window the given coordinates are actually in. */ | |
| 9015 window = f->root_window; | |
| 9016 *w = find_window_by_pixel_pos (x_coord, y_coord, window); | |
| 9017 | |
| 9018 /* If we didn't find a window, we're done. */ | |
| 9019 if (!*w) | |
| 9020 { | |
| 9021 UPDATE_CACHE_RETURN; | |
| 9022 } | |
| 9023 else if (position != OVER_NOTHING) | |
| 9024 { | |
| 9025 *closest = 0; | |
| 9026 *modeline_closest = -1; | |
| 9027 | |
| 9028 if (high_y_coord <= frm_top || high_y_coord >= frm_bottom) | |
| 9029 { | |
| 9030 *w = 0; | |
| 9031 UPDATE_CACHE_RETURN; | |
| 9032 } | |
| 9033 } | |
| 9034 | |
| 9035 /* Check if the window is a minibuffer but isn't active. */ | |
| 9036 if (MINI_WINDOW_P (*w) && !minibuf_level) | |
| 9037 { | |
| 9038 /* Must reset the window value since some callers will ignore | |
| 4187 | 9039 the return value if it is set. */ |
| 428 | 9040 *w = 0; |
| 9041 UPDATE_CACHE_RETURN; | |
| 9042 } | |
| 9043 | |
| 9044 /* See if the point is over window vertical divider */ | |
| 9045 if (window_needs_vertical_divider (*w)) | |
| 9046 { | |
| 9047 int div_x_high = WINDOW_RIGHT (*w); | |
| 9048 int div_x_low = div_x_high - window_divider_width (*w); | |
| 9049 int div_y_high = WINDOW_BOTTOM (*w); | |
| 9050 int div_y_low = WINDOW_TOP (*w); | |
| 9051 | |
| 9052 if (div_x_low < x_coord && x_coord <= div_x_high && | |
| 9053 div_y_low < y_coord && y_coord <= div_y_high) | |
| 9054 { | |
| 9055 low_x_coord = div_x_low; | |
| 9056 high_x_coord = div_x_high; | |
| 9057 low_y_coord = div_y_low; | |
| 9058 high_y_coord = div_y_high; | |
| 9059 position = OVER_V_DIVIDER; | |
| 9060 UPDATE_CACHE_RETURN; | |
| 9061 } | |
| 9062 } | |
| 9063 | |
| 9064 dla = window_display_lines (*w, CURRENT_DISP); | |
| 9065 | |
| 9066 for (*row = 0; *row < Dynarr_length (dla); (*row)++) | |
| 9067 { | |
| 9068 int really_over_nothing = 0; | |
| 9069 struct display_line *dl = Dynarr_atp (dla, *row); | |
| 9070 | |
| 9071 if ((int) (dl->ypos - dl->ascent) <= y_coord | |
| 9072 && y_coord <= (int) (dl->ypos + dl->descent)) | |
| 9073 { | |
| 9074 int check_margin_glyphs = 0; | |
| 9075 struct display_block *db = get_display_block_from_line (dl, TEXT); | |
| 9076 struct rune *rb = 0; | |
| 9077 | |
| 9078 if (x_coord < dl->bounds.left_white | |
| 9079 || x_coord >= dl->bounds.right_white) | |
| 9080 check_margin_glyphs = 1; | |
| 9081 | |
| 9082 low_y_coord = dl->ypos - dl->ascent; | |
| 9083 high_y_coord = dl->ypos + dl->descent + 1; | |
| 9084 | |
| 9085 if (position == OVER_BORDER | |
| 9086 || position == OVER_OUTSIDE | |
| 9087 || check_margin_glyphs) | |
| 9088 { | |
| 9089 int x_check, left_bound; | |
| 9090 | |
| 9091 if (check_margin_glyphs) | |
| 9092 { | |
| 9093 x_check = x_coord; | |
| 9094 left_bound = dl->bounds.left_white; | |
| 9095 } | |
| 9096 else | |
| 9097 { | |
| 9098 x_check = high_x_coord; | |
| 9099 left_bound = frm_left; | |
| 9100 } | |
| 9101 | |
| 9102 if (Dynarr_length (db->runes)) | |
| 9103 { | |
| 9104 if (x_check <= left_bound) | |
| 9105 { | |
| 9106 if (dl->modeline) | |
| 4967 | 9107 *modeline_closest = Dynarr_begin (db->runes)->charpos; |
| 428 | 9108 else |
| 4967 | 9109 *closest = Dynarr_begin (db->runes)->charpos; |
| 428 | 9110 } |
| 9111 else | |
| 9112 { | |
| 9113 if (dl->modeline) | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
9114 *modeline_closest = Dynarr_lastp (db->runes)->charpos; |
| 428 | 9115 else |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
9116 *closest = Dynarr_lastp (db->runes)->charpos; |
| 428 | 9117 } |
| 9118 | |
| 9119 if (dl->modeline) | |
| 9120 *modeline_closest += dl->offset; | |
| 9121 else | |
| 9122 *closest += dl->offset; | |
| 9123 } | |
| 9124 else | |
| 9125 { | |
| 9126 /* #### What should be here. */ | |
| 9127 if (dl->modeline) | |
| 9128 *modeline_closest = 0; | |
| 9129 else | |
| 9130 *closest = 0; | |
| 9131 } | |
| 9132 | |
| 9133 if (check_margin_glyphs) | |
| 9134 { | |
| 9135 if (x_coord < dl->bounds.left_in | |
| 9136 || x_coord >= dl->bounds.right_in) | |
| 9137 { | |
| 9138 /* If we are over the outside margins then we | |
| 4187 | 9139 know the loop over the text block isn't going |
| 9140 to accomplish anything. So we go ahead and | |
| 9141 set what information we can right here and | |
| 9142 return. */ | |
| 428 | 9143 (*row)--; |
| 9144 *obj_y = y_coord - (dl->ypos - dl->ascent); | |
| 9145 get_position_object (dl, obj1, obj2, x_coord, | |
| 9146 &low_x_coord, &high_x_coord); | |
| 9147 | |
| 9148 UPDATE_CACHE_RETURN; | |
| 9149 } | |
| 9150 } | |
| 9151 else | |
| 9152 UPDATE_CACHE_RETURN; | |
| 9153 } | |
| 9154 | |
| 9155 for (*col = 0; *col <= Dynarr_length (db->runes); (*col)++) | |
| 9156 { | |
| 9157 int past_end = (*col == Dynarr_length (db->runes)); | |
| 9158 | |
| 9159 if (!past_end) | |
| 9160 rb = Dynarr_atp (db->runes, *col); | |
| 9161 | |
| 9162 if (past_end || | |
| 9163 (rb->xpos <= x_coord && x_coord < rb->xpos + rb->width)) | |
| 9164 { | |
| 9165 if (past_end) | |
| 9166 { | |
| 9167 (*col)--; | |
| 9168 rb = Dynarr_atp (db->runes, *col); | |
| 9169 } | |
| 9170 | |
| 826 | 9171 *charpos = rb->charpos + dl->offset; |
| 428 | 9172 low_x_coord = rb->xpos; |
| 9173 high_x_coord = rb->xpos + rb->width; | |
| 9174 | |
| 9175 if (rb->type == RUNE_DGLYPH) | |
| 9176 { | |
| 9177 int elt = *col + 1; | |
| 9178 | |
| 9179 /* Find the first character after the glyph. */ | |
| 9180 while (elt < Dynarr_length (db->runes)) | |
| 9181 { | |
| 9182 if (Dynarr_atp (db->runes, elt)->type != RUNE_DGLYPH) | |
| 9183 { | |
| 9184 if (dl->modeline) | |
| 9185 *modeline_closest = | |
| 826 | 9186 (Dynarr_atp (db->runes, elt)->charpos + |
| 428 | 9187 dl->offset); |
| 9188 else | |
| 9189 *closest = | |
| 826 | 9190 (Dynarr_atp (db->runes, elt)->charpos + |
| 428 | 9191 dl->offset); |
| 9192 break; | |
| 9193 } | |
| 9194 | |
| 9195 elt++; | |
| 9196 } | |
| 9197 | |
| 9198 /* In this case we failed to find a non-glyph | |
| 4187 | 9199 character so we return the last position |
| 9200 displayed on the line. */ | |
| 428 | 9201 if (elt == Dynarr_length (db->runes)) |
| 9202 { | |
| 9203 if (dl->modeline) | |
| 826 | 9204 *modeline_closest = dl->end_charpos + dl->offset; |
| 428 | 9205 else |
| 826 | 9206 *closest = dl->end_charpos + dl->offset; |
| 428 | 9207 really_over_nothing = 1; |
| 9208 } | |
| 9209 } | |
| 9210 else | |
| 9211 { | |
| 9212 if (dl->modeline) | |
| 826 | 9213 *modeline_closest = rb->charpos + dl->offset; |
| 428 | 9214 else |
| 826 | 9215 *closest = rb->charpos + dl->offset; |
| 428 | 9216 } |
| 9217 | |
| 9218 if (dl->modeline) | |
| 9219 { | |
| 9220 *row = window_displayed_height (*w); | |
| 9221 | |
| 9222 if (position == OVER_NOTHING) | |
| 9223 position = OVER_MODELINE; | |
| 9224 | |
| 9225 if (rb->type == RUNE_DGLYPH) | |
| 9226 { | |
| 9227 *obj1 = rb->object.dglyph.glyph; | |
| 9228 *obj2 = rb->object.dglyph.extent; | |
| 9229 } | |
| 9230 else if (rb->type == RUNE_CHAR) | |
| 9231 { | |
| 9232 *obj1 = Qnil; | |
| 9233 *obj2 = Qnil; | |
| 9234 } | |
| 9235 else | |
| 9236 { | |
| 9237 *obj1 = Qnil; | |
| 9238 *obj2 = Qnil; | |
| 9239 } | |
| 9240 | |
| 9241 UPDATE_CACHE_RETURN; | |
| 9242 } | |
| 9243 else if (past_end | |
| 9244 || (rb->type == RUNE_CHAR | |
| 9245 && rb->object.chr.ch == '\n')) | |
| 9246 { | |
| 9247 (*row)--; | |
| 9248 /* At this point we may have glyphs in the right | |
| 4187 | 9249 inside margin. */ |
| 428 | 9250 if (check_margin_glyphs) |
| 9251 get_position_object (dl, obj1, obj2, x_coord, | |
| 9252 &low_x_coord, &high_x_coord); | |
| 9253 UPDATE_CACHE_RETURN; | |
| 9254 } | |
| 9255 else | |
| 9256 { | |
| 9257 (*row)--; | |
| 9258 if (rb->type == RUNE_DGLYPH) | |
| 9259 { | |
| 9260 *obj1 = rb->object.dglyph.glyph; | |
| 9261 *obj2 = rb->object.dglyph.extent; | |
| 9262 } | |
| 9263 else if (rb->type == RUNE_CHAR) | |
| 9264 { | |
| 9265 *obj1 = Qnil; | |
| 9266 *obj2 = Qnil; | |
| 9267 } | |
| 9268 else | |
| 9269 { | |
| 9270 *obj1 = Qnil; | |
| 9271 *obj2 = Qnil; | |
| 9272 } | |
| 9273 | |
| 9274 *obj_x = x_coord - rb->xpos; | |
| 9275 *obj_y = y_coord - (dl->ypos - dl->ascent); | |
| 9276 | |
| 9277 /* At this point we may have glyphs in the left | |
| 4187 | 9278 inside margin. */ |
| 428 | 9279 if (check_margin_glyphs) |
| 9280 get_position_object (dl, obj1, obj2, x_coord, 0, 0); | |
| 9281 | |
| 9282 if (position == OVER_NOTHING && !really_over_nothing) | |
| 9283 position = OVER_TEXT; | |
| 9284 | |
| 9285 UPDATE_CACHE_RETURN; | |
| 9286 } | |
| 9287 } | |
| 9288 } | |
| 9289 } | |
| 9290 } | |
| 9291 | |
| 9292 *row = Dynarr_length (dla) - 1; | |
| 9293 if (FRAME_WIN_P (f)) | |
| 9294 { | |
| 9295 int bot_elt = Dynarr_length (dla) - 1; | |
| 9296 | |
| 9297 if (bot_elt >= 0) | |
| 9298 { | |
| 9299 struct display_line *dl = Dynarr_atp (dla, bot_elt); | |
| 9300 int adj_area = y_coord - (dl->ypos + dl->descent); | |
| 9301 Lisp_Object lwin; | |
| 9302 int defheight; | |
| 9303 | |
| 793 | 9304 lwin = wrap_window (*w); |
|
5047
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Ben Wing <ben@xemacs.org>
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5043
diff
changeset
|
9305 default_face_width_and_height (lwin, 0, &defheight); |
| 428 | 9306 |
| 9307 *row += (adj_area / defheight); | |
| 9308 } | |
| 9309 } | |
| 9310 | |
| 9311 /* #### This should be checked out some more to determine what | |
| 9312 should really be going on. */ | |
| 9313 if (!MARKERP ((*w)->start[CURRENT_DISP])) | |
| 9314 *closest = 0; | |
| 9315 else | |
| 442 | 9316 *closest = end_of_last_line_may_error (*w, |
| 428 | 9317 marker_position ((*w)->start[CURRENT_DISP])); |
| 9318 *col = 0; | |
| 9319 UPDATE_CACHE_RETURN; | |
| 9320 } | |
| 9321 #undef UPDATE_CACHE_RETURN | |
| 9322 | |
| 9323 | |
| 9324 /***************************************************************************/ | |
| 9325 /* */ | |
| 9326 /* Lisp functions */ | |
| 9327 /* */ | |
| 9328 /***************************************************************************/ | |
| 9329 | |
| 9330 DEFUN ("redisplay-echo-area", Fredisplay_echo_area, 0, 0, 0, /* | |
| 9331 Ensure that all minibuffers are correctly showing the echo area. | |
| 9332 */ | |
| 9333 ()) | |
| 9334 { | |
| 9335 Lisp_Object devcons, concons; | |
| 9336 | |
| 1318 | 9337 if (in_display) |
| 9338 return Qnil; | |
| 9339 | |
| 428 | 9340 DEVICE_LOOP_NO_BREAK (devcons, concons) |
| 9341 { | |
| 9342 struct device *d = XDEVICE (XCAR (devcons)); | |
| 9343 Lisp_Object frmcons; | |
| 9344 | |
| 1279 | 9345 if (DEVICE_STREAM_P (d)) |
| 9346 continue; | |
| 9347 | |
| 428 | 9348 DEVICE_FRAME_LOOP (frmcons, d) |
| 9349 { | |
| 9350 struct frame *f = XFRAME (XCAR (frmcons)); | |
| 853 | 9351 int depth; |
| 428 | 9352 |
| 9353 if (FRAME_REPAINT_P (f) && FRAME_HAS_MINIBUF_P (f)) | |
| 9354 { | |
| 9355 Lisp_Object window = FRAME_MINIBUF_WINDOW (f); | |
| 442 | 9356 |
| 9357 MAYBE_DEVMETH (d, frame_output_begin, (f)); | |
| 9358 | |
| 428 | 9359 /* |
| 9360 * If the frame size has changed, there may be random | |
| 9361 * chud on the screen left from previous messages | |
| 9362 * because redisplay_frame hasn't been called yet. | |
| 9363 * Clear the screen to get rid of the potential mess. | |
| 9364 */ | |
| 9365 if (f->echo_area_garbaged) | |
| 9366 { | |
| 442 | 9367 MAYBE_DEVMETH (d, clear_frame, (f)); |
| 428 | 9368 f->echo_area_garbaged = 0; |
| 9369 } | |
| 853 | 9370 depth = enter_redisplay_critical_section (); |
| 428 | 9371 redisplay_window (window, 0); |
| 853 | 9372 exit_redisplay_critical_section (depth); |
| 442 | 9373 MAYBE_DEVMETH (d, frame_output_end, (f)); |
| 428 | 9374 } |
| 9375 } | |
| 9376 } | |
| 9377 | |
| 9378 return Qnil; | |
| 9379 } | |
| 9380 | |
| 9381 DEFUN ("redraw-frame", Fredraw_frame, 0, 2, 0, /* | |
| 9382 Clear frame FRAME and output again what is supposed to appear on it. | |
| 9383 FRAME defaults to the selected frame if omitted. | |
| 9384 Normally, redisplay is preempted as normal if input arrives. However, | |
| 9385 if optional second arg NO-PREEMPT is non-nil, redisplay will not stop for | |
| 9386 input and is guaranteed to proceed to completion. | |
| 9387 */ | |
| 9388 (frame, no_preempt)) | |
| 9389 { | |
| 9390 struct frame *f = decode_frame (frame); | |
| 9391 int count = specpdl_depth (); | |
| 9392 | |
| 9393 if (!NILP (no_preempt)) | |
| 853 | 9394 internal_bind_int (&disable_preemption, 1 + disable_preemption); |
| 428 | 9395 |
| 9396 f->clear = 1; | |
| 9397 redisplay_frame (f, 1); | |
| 9398 | |
| 442 | 9399 /* See the comment in Fredisplay_frame. */ |
| 9400 RESET_CHANGED_SET_FLAGS; | |
| 9401 | |
| 771 | 9402 return unbind_to (count); |
| 428 | 9403 } |
| 9404 | |
| 9405 DEFUN ("redisplay-frame", Fredisplay_frame, 0, 2, 0, /* | |
| 9406 Ensure that FRAME's contents are correctly displayed. | |
| 9407 This differs from `redraw-frame' in that it only redraws what needs to | |
| 9408 be updated, as opposed to unconditionally clearing and redrawing | |
| 9409 the frame. | |
| 9410 FRAME defaults to the selected frame if omitted. | |
| 9411 Normally, redisplay is preempted as normal if input arrives. However, | |
| 9412 if optional second arg NO-PREEMPT is non-nil, redisplay will not stop for | |
| 9413 input and is guaranteed to proceed to completion. | |
| 9414 */ | |
| 9415 (frame, no_preempt)) | |
| 9416 { | |
| 9417 struct frame *f = decode_frame (frame); | |
| 9418 int count = specpdl_depth (); | |
| 9419 | |
| 9420 if (!NILP (no_preempt)) | |
| 853 | 9421 internal_bind_int (&disable_preemption, 1 + disable_preemption); |
| 428 | 9422 |
| 9423 redisplay_frame (f, 1); | |
| 9424 | |
| 442 | 9425 /* If we don't reset the global redisplay flags here, subsequent |
| 9426 changes to the display will not get registered by redisplay | |
| 9427 because it thinks it already has registered changes. If you | |
| 9428 really knew what you were doing you could confuse redisplay by | |
| 9429 calling Fredisplay_frame while updating another frame. We assume | |
| 9430 that if you know what you are doing you will not be that | |
| 9431 stupid. */ | |
| 9432 RESET_CHANGED_SET_FLAGS; | |
| 9433 | |
| 771 | 9434 return unbind_to (count); |
| 428 | 9435 } |
| 9436 | |
| 9437 DEFUN ("redraw-device", Fredraw_device, 0, 2, 0, /* | |
| 9438 Clear device DEVICE and output again what is supposed to appear on it. | |
| 9439 DEVICE defaults to the selected device if omitted. | |
| 9440 Normally, redisplay is preempted as normal if input arrives. However, | |
| 9441 if optional second arg NO-PREEMPT is non-nil, redisplay will not stop for | |
| 9442 input and is guaranteed to proceed to completion. | |
| 9443 */ | |
| 9444 (device, no_preempt)) | |
| 9445 { | |
| 9446 struct device *d = decode_device (device); | |
| 9447 Lisp_Object frmcons; | |
| 9448 int count = specpdl_depth (); | |
| 9449 | |
| 9450 if (!NILP (no_preempt)) | |
| 853 | 9451 internal_bind_int (&disable_preemption, 1 + disable_preemption); |
| 428 | 9452 |
| 9453 DEVICE_FRAME_LOOP (frmcons, d) | |
| 9454 { | |
| 9455 XFRAME (XCAR (frmcons))->clear = 1; | |
| 9456 } | |
| 440 | 9457 redisplay_device (d, 0); |
| 428 | 9458 |
| 442 | 9459 /* See the comment in Fredisplay_frame. */ |
| 9460 RESET_CHANGED_SET_FLAGS; | |
| 9461 | |
| 771 | 9462 return unbind_to (count); |
| 428 | 9463 } |
| 9464 | |
| 9465 DEFUN ("redisplay-device", Fredisplay_device, 0, 2, 0, /* | |
| 9466 Ensure that DEVICE's contents are correctly displayed. | |
| 9467 This differs from `redraw-device' in that it only redraws what needs to | |
| 9468 be updated, as opposed to unconditionally clearing and redrawing | |
| 9469 the device. | |
| 9470 DEVICE defaults to the selected device if omitted. | |
| 9471 Normally, redisplay is preempted as normal if input arrives. However, | |
| 9472 if optional second arg NO-PREEMPT is non-nil, redisplay will not stop for | |
| 9473 input and is guaranteed to proceed to completion. | |
| 853 | 9474 |
| 9475 Note: If you simply want everything redisplayed, the current idiom is | |
| 9476 `(sit-for 0)'. | |
| 428 | 9477 */ |
| 9478 (device, no_preempt)) | |
| 9479 { | |
| 9480 struct device *d = decode_device (device); | |
| 9481 int count = specpdl_depth (); | |
| 9482 | |
| 9483 if (!NILP (no_preempt)) | |
| 853 | 9484 internal_bind_int (&disable_preemption, 1 + disable_preemption); |
| 428 | 9485 |
| 440 | 9486 redisplay_device (d, 0); |
| 428 | 9487 |
| 442 | 9488 /* See the comment in Fredisplay_frame. */ |
| 9489 RESET_CHANGED_SET_FLAGS; | |
| 9490 | |
| 771 | 9491 return unbind_to (count); |
| 428 | 9492 } |
| 9493 | |
| 9494 /* Big lie. Big lie. This will force all modelines to be updated | |
| 9495 regardless if the all flag is set or not. It remains in existence | |
| 9496 solely for backwards compatibility. */ | |
| 9497 DEFUN ("redraw-modeline", Fredraw_modeline, 0, 1, 0, /* | |
| 9498 Force the modeline of the current buffer to be redisplayed. | |
| 9499 With optional non-nil ALL, force redisplay of all modelines. | |
| 9500 */ | |
| 2286 | 9501 (UNUSED (all))) |
| 428 | 9502 { |
| 9503 MARK_MODELINE_CHANGED; | |
| 9504 return Qnil; | |
| 9505 } | |
| 9506 | |
| 9507 DEFUN ("force-cursor-redisplay", Fforce_cursor_redisplay, 0, 1, 0, /* | |
| 9508 Force an immediate update of the cursor on FRAME. | |
| 9509 FRAME defaults to the selected frame if omitted. | |
| 9510 */ | |
| 9511 (frame)) | |
| 9512 { | |
| 1279 | 9513 struct frame *f = decode_frame (frame); |
| 9514 | |
| 9515 if (!FRAME_STREAM_P (f)) | |
| 9516 redisplay_redraw_cursor (f, 1); | |
| 428 | 9517 return Qnil; |
| 9518 } | |
| 9519 | |
| 9520 | |
| 9521 /***************************************************************************/ | |
| 9522 /* */ | |
| 872 | 9523 /* Change flags */ |
| 428 | 9524 /* */ |
| 9525 /***************************************************************************/ | |
| 9526 | |
| 9527 static void | |
| 2286 | 9528 margin_width_changed_in_frame (Lisp_Object UNUSED (specifier), |
| 9529 struct frame *UNUSED (f), | |
| 9530 Lisp_Object UNUSED (oldval)) | |
| 428 | 9531 { |
| 9532 /* Nothing to be done? */ | |
| 9533 } | |
| 9534 | |
| 9535 int | |
| 2286 | 9536 redisplay_variable_changed (Lisp_Object UNUSED (sym), |
| 9537 Lisp_Object *UNUSED (val), | |
| 9538 Lisp_Object UNUSED (in_object), | |
| 9539 int UNUSED (flags)) | |
| 428 | 9540 { |
| 9541 /* #### clip_changed should really be renamed something like | |
| 9542 global_redisplay_change. */ | |
| 9543 MARK_CLIP_CHANGED; | |
| 9544 return 0; | |
| 9545 } | |
| 9546 | |
| 9547 /* This is called if the built-in glyphs have their properties | |
| 9548 changed. */ | |
| 9549 void | |
| 2286 | 9550 redisplay_glyph_changed (Lisp_Object UNUSED (glyph), |
| 9551 Lisp_Object UNUSED (property), Lisp_Object locale) | |
| 428 | 9552 { |
| 9553 if (WINDOWP (locale)) | |
| 9554 { | |
| 9555 MARK_FRAME_GLYPHS_CHANGED (XFRAME (WINDOW_FRAME (XWINDOW (locale)))); | |
| 9556 } | |
| 9557 else if (FRAMEP (locale)) | |
| 9558 { | |
| 9559 MARK_FRAME_GLYPHS_CHANGED (XFRAME (locale)); | |
| 9560 } | |
| 9561 else if (DEVICEP (locale)) | |
| 9562 { | |
| 9563 Lisp_Object frmcons; | |
| 9564 DEVICE_FRAME_LOOP (frmcons, XDEVICE (locale)) | |
| 9565 MARK_FRAME_GLYPHS_CHANGED (XFRAME (XCAR (frmcons))); | |
| 9566 } | |
| 9567 else if (CONSOLEP (locale)) | |
| 9568 { | |
| 9569 Lisp_Object frmcons, devcons; | |
| 9570 CONSOLE_FRAME_LOOP_NO_BREAK (frmcons, devcons, XCONSOLE (locale)) | |
| 9571 MARK_FRAME_GLYPHS_CHANGED (XFRAME (XCAR (frmcons))); | |
| 9572 } | |
| 9573 else /* global or buffer */ | |
| 9574 { | |
| 9575 Lisp_Object frmcons, devcons, concons; | |
| 9576 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons) | |
| 9577 MARK_FRAME_GLYPHS_CHANGED (XFRAME (XCAR (frmcons))); | |
| 9578 } | |
| 9579 } | |
| 9580 | |
| 9581 static void | |
| 2286 | 9582 text_cursor_visible_p_changed (Lisp_Object UNUSED (specifier), |
| 9583 struct window *w, Lisp_Object UNUSED (oldval)) | |
| 428 | 9584 { |
| 9585 if (XFRAME (w->frame)->init_finished) | |
| 9586 Fforce_cursor_redisplay (w->frame); | |
| 9587 } | |
| 9588 | |
| 872 | 9589 void |
| 9590 mark_buffers_changed (void) | |
| 9591 { | |
| 9592 MARK_TYPE_CHANGED (buffers); | |
| 9593 } | |
| 9594 | |
| 9595 void | |
| 9596 mark_clip_changed (void) | |
| 9597 { | |
| 9598 MARK_TYPE_CHANGED (clip); | |
| 9599 } | |
| 9600 | |
| 9601 void | |
| 9602 mark_extents_changed (void) | |
| 9603 { | |
| 9604 MARK_TYPE_CHANGED (extents); | |
| 9605 } | |
| 9606 | |
| 9607 void | |
| 9608 mark_icon_changed (void) | |
| 9609 { | |
| 9610 MARK_TYPE_CHANGED (icon); | |
| 9611 } | |
| 9612 | |
| 9613 void | |
| 9614 mark_menubar_changed (void) | |
| 9615 { | |
| 9616 MARK_TYPE_CHANGED (menubar); | |
| 9617 } | |
| 9618 | |
| 9619 void | |
| 9620 mark_modeline_changed (void) | |
| 9621 { | |
| 9622 MARK_TYPE_CHANGED (modeline); | |
| 9623 } | |
| 9624 | |
| 9625 void | |
| 9626 mark_point_changed (void) | |
| 9627 { | |
| 9628 MARK_TYPE_CHANGED (point); | |
| 9629 } | |
| 9630 | |
| 9631 void | |
| 9632 mark_toolbar_changed (void) | |
| 9633 { | |
| 9634 MARK_TYPE_CHANGED (toolbar); | |
| 9635 } | |
| 9636 | |
| 9637 void | |
| 9638 mark_gutter_changed (void) | |
| 9639 { | |
| 9640 MARK_TYPE_CHANGED (gutter); | |
| 9641 } | |
| 9642 | |
| 9643 void | |
| 9644 mark_glyphs_changed (void) | |
| 9645 { | |
| 9646 MARK_TYPE_CHANGED (glyphs); | |
| 9647 } | |
| 9648 | |
| 9649 void | |
| 9650 mark_subwindows_changed (void) | |
| 9651 { | |
| 9652 MARK_TYPE_CHANGED (subwindows); | |
| 9653 } | |
| 9654 | |
| 9655 void | |
| 9656 mark_subwindows_state_changed (void) | |
| 9657 { | |
| 9658 MARK_TYPE_CHANGED (subwindows_state); | |
| 9659 } | |
| 9660 | |
| 428 | 9661 #ifdef MEMORY_USAGE_STATS |
| 9662 | |
| 9663 | |
| 9664 /***************************************************************************/ | |
| 9665 /* */ | |
| 9666 /* memory usage computation */ | |
| 9667 /* */ | |
| 9668 /***************************************************************************/ | |
| 9669 | |
| 9670 static int | |
|
5157
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parents:
5090
diff
changeset
|
9671 compute_rune_dynarr_usage (rune_dynarr *dyn, struct usage_stats *ustats) |
|
1fae11d56ad2
redo memory-usage mechanism, add way of dynamically initializing Lisp objects
Ben Wing <ben@xemacs.org>
parents:
5090
diff
changeset
|
9672 { |
|
1fae11d56ad2
redo memory-usage mechanism, add way of dynamically initializing Lisp objects
Ben Wing <ben@xemacs.org>
parents:
5090
diff
changeset
|
9673 return dyn ? Dynarr_memory_usage (dyn, ustats) : 0; |
| 428 | 9674 } |
| 9675 | |
| 9676 static int | |
| 9677 compute_display_block_dynarr_usage (display_block_dynarr *dyn, | |
|
5157
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redo memory-usage mechanism, add way of dynamically initializing Lisp objects
Ben Wing <ben@xemacs.org>
parents:
5090
diff
changeset
|
9678 struct usage_stats *ustats) |
| 428 | 9679 { |
| 9680 int total, i; | |
| 9681 | |
| 9682 if (!dyn) | |
| 9683 return 0; | |
| 9684 | |
|
5157
1fae11d56ad2
redo memory-usage mechanism, add way of dynamically initializing Lisp objects
Ben Wing <ben@xemacs.org>
parents:
5090
diff
changeset
|
9685 total = Dynarr_memory_usage (dyn, ustats); |
| 428 | 9686 for (i = 0; i < Dynarr_largest (dyn); i++) |
|
5157
1fae11d56ad2
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Ben Wing <ben@xemacs.org>
parents:
5090
diff
changeset
|
9687 total += compute_rune_dynarr_usage (Dynarr_at (dyn, i).runes, ustats); |
| 428 | 9688 |
| 9689 return total; | |
| 9690 } | |
| 9691 | |
| 9692 static int | |
| 9693 compute_glyph_block_dynarr_usage (glyph_block_dynarr *dyn, | |
|
5157
1fae11d56ad2
redo memory-usage mechanism, add way of dynamically initializing Lisp objects
Ben Wing <ben@xemacs.org>
parents:
5090
diff
changeset
|
9694 struct usage_stats *ustats) |
|
1fae11d56ad2
redo memory-usage mechanism, add way of dynamically initializing Lisp objects
Ben Wing <ben@xemacs.org>
parents:
5090
diff
changeset
|
9695 { |
|
1fae11d56ad2
redo memory-usage mechanism, add way of dynamically initializing Lisp objects
Ben Wing <ben@xemacs.org>
parents:
5090
diff
changeset
|
9696 return dyn ? Dynarr_memory_usage (dyn, ustats) : 0; |
| 428 | 9697 } |
| 9698 | |
| 9699 int | |
| 9700 compute_display_line_dynarr_usage (display_line_dynarr *dyn, | |
|
5157
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redo memory-usage mechanism, add way of dynamically initializing Lisp objects
Ben Wing <ben@xemacs.org>
parents:
5090
diff
changeset
|
9701 struct usage_stats *ustats) |
| 428 | 9702 { |
| 9703 int total, i; | |
| 9704 | |
| 9705 if (!dyn) | |
| 9706 return 0; | |
| 9707 | |
|
5157
1fae11d56ad2
redo memory-usage mechanism, add way of dynamically initializing Lisp objects
Ben Wing <ben@xemacs.org>
parents:
5090
diff
changeset
|
9708 total = Dynarr_memory_usage (dyn, ustats); |
| 428 | 9709 for (i = 0; i < Dynarr_largest (dyn); i++) |
| 9710 { | |
| 9711 struct display_line *dl = &Dynarr_at (dyn, i); | |
| 5198 | 9712 total += compute_display_block_dynarr_usage (dl->display_blocks, ustats); |
|
5157
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redo memory-usage mechanism, add way of dynamically initializing Lisp objects
Ben Wing <ben@xemacs.org>
parents:
5090
diff
changeset
|
9713 total += compute_glyph_block_dynarr_usage (dl->left_glyphs, ustats); |
|
1fae11d56ad2
redo memory-usage mechanism, add way of dynamically initializing Lisp objects
Ben Wing <ben@xemacs.org>
parents:
5090
diff
changeset
|
9714 total += compute_glyph_block_dynarr_usage (dl->right_glyphs, ustats); |
| 428 | 9715 } |
| 9716 | |
| 9717 return total; | |
| 9718 } | |
| 9719 | |
| 9720 int | |
| 9721 compute_line_start_cache_dynarr_usage (line_start_cache_dynarr *dyn, | |
|
5157
1fae11d56ad2
redo memory-usage mechanism, add way of dynamically initializing Lisp objects
Ben Wing <ben@xemacs.org>
parents:
5090
diff
changeset
|
9722 struct usage_stats *ustats) |
|
1fae11d56ad2
redo memory-usage mechanism, add way of dynamically initializing Lisp objects
Ben Wing <ben@xemacs.org>
parents:
5090
diff
changeset
|
9723 { |
|
1fae11d56ad2
redo memory-usage mechanism, add way of dynamically initializing Lisp objects
Ben Wing <ben@xemacs.org>
parents:
5090
diff
changeset
|
9724 return dyn ? Dynarr_memory_usage (dyn, ustats) : 0; |
| 428 | 9725 } |
| 9726 | |
| 9727 #endif /* MEMORY_USAGE_STATS */ | |
| 9728 | |
| 1204 | 9729 #ifdef ERROR_CHECK_DISPLAY |
| 9730 | |
| 800 | 9731 static int |
| 2286 | 9732 sledgehammer_check_redisplay_structs_1 (struct window *w, |
| 9733 void *UNUSED (closure)) | |
| 800 | 9734 { |
| 9735 int i, j; | |
| 9736 display_line_dynarr *dl; | |
| 9737 | |
| 9738 dl = window_display_lines (w, CURRENT_DISP); | |
| 4187 | 9739 |
| 800 | 9740 for (i = 0; i < Dynarr_largest (dl); i++) |
| 9741 for (j = i + 1; j < Dynarr_largest (dl); j++) | |
| 9742 assert (Dynarr_atp (dl, i)->display_blocks != | |
| 9743 Dynarr_atp (dl, j)->display_blocks); | |
| 9744 | |
| 9745 dl = window_display_lines (w, DESIRED_DISP); | |
| 9746 | |
| 9747 for (i = 0; i < Dynarr_largest (dl); i++) | |
| 9748 for (j = i + 1; j < Dynarr_largest (dl); j++) | |
| 9749 assert (Dynarr_atp (dl, i)->display_blocks != | |
| 9750 Dynarr_atp (dl, j)->display_blocks); | |
| 9751 | |
| 9752 return 0; | |
| 9753 } | |
| 9754 | |
| 9755 static void | |
| 9756 sledgehammer_check_redisplay_structs (void) | |
| 9757 { | |
| 9758 map_windows (0, sledgehammer_check_redisplay_structs_1, NULL); | |
| 9759 } | |
| 9760 | |
| 1204 | 9761 #endif /* ERROR_CHECK_DISPLAY */ |
| 9762 | |
| 428 | 9763 |
| 9764 /***************************************************************************/ | |
| 9765 /* */ | |
| 9766 /* initialization */ | |
| 9767 /* */ | |
| 9768 /***************************************************************************/ | |
| 9769 | |
| 9770 void | |
| 9771 init_redisplay (void) | |
| 9772 { | |
| 9773 disable_preemption = 0; | |
| 9774 preemption_count = 0; | |
| 9775 | |
| 9776 #ifndef PDUMP | |
| 9777 if (!initialized) | |
| 9778 #endif | |
| 9779 { | |
| 440 | 9780 if (!cmotion_display_lines) |
| 9781 cmotion_display_lines = Dynarr_new (display_line); | |
| 867 | 9782 if (!mode_spec_ibyte_string) |
| 9783 mode_spec_ibyte_string = Dynarr_new (Ibyte); | |
| 440 | 9784 if (!formatted_string_extent_dynarr) |
| 9785 formatted_string_extent_dynarr = Dynarr_new (EXTENT); | |
| 9786 if (!formatted_string_extent_start_dynarr) | |
| 9787 formatted_string_extent_start_dynarr = Dynarr_new (Bytecount); | |
| 9788 if (!formatted_string_extent_end_dynarr) | |
| 9789 formatted_string_extent_end_dynarr = Dynarr_new (Bytecount); | |
| 9790 if (!internal_cache) | |
| 9791 internal_cache = Dynarr_new (line_start_cache); | |
| 428 | 9792 } |
| 9793 | |
|
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|
9794 if (!initialized) |
| 428 | 9795 return; |
| 9796 | |
|
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|
9797 if (noninteractive) |
|
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|
9798 { |
|
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|
9799 Vinitial_device_type = Qstream; |
|
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|
9800 return; |
|
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|
9801 } |
|
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|
9802 |
| 428 | 9803 /* If the user wants to use a window system, we shouldn't bother |
| 9804 initializing the terminal. This is especially important when the | |
| 9805 terminal is so dumb that emacs gives up before and doesn't bother | |
| 9806 using the window system. | |
| 9807 | |
| 9808 If the DISPLAY environment variable is set, try to use X, and die | |
| 9809 with an error message if that doesn't work. */ | |
| 9810 | |
| 9811 #ifdef HAVE_X_WINDOWS | |
| 9812 if (!strcmp (display_use, "x")) | |
| 9813 { | |
| 9814 /* Some stuff checks this way early. */ | |
| 9815 Vwindow_system = Qx; | |
|
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|
9816 Vinitial_device_type = Qx; |
| 428 | 9817 return; |
| 9818 } | |
| 9819 #endif /* HAVE_X_WINDOWS */ | |
| 9820 | |
| 462 | 9821 #ifdef HAVE_GTK |
| 9822 if (!strcmp (display_use, "gtk")) | |
| 9823 { | |
| 9824 Vwindow_system = Qgtk; | |
|
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|
9825 Vinitial_device_type = Qgtk; |
| 462 | 9826 return; |
| 9827 } | |
| 9828 #endif | |
| 9829 | |
| 428 | 9830 #ifdef HAVE_MS_WINDOWS |
| 9831 if (!strcmp (display_use, "mswindows")) | |
| 9832 { | |
| 9833 /* Some stuff checks this way early. */ | |
| 9834 Vwindow_system = Qmswindows; | |
|
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|
9835 Vinitial_device_type = Qmswindows; |
| 428 | 9836 return; |
| 9837 } | |
| 9838 #endif /* HAVE_MS_WINDOWS */ | |
| 9839 | |
| 9840 #ifdef HAVE_TTY | |
| 9841 /* If no window system has been specified, try to use the terminal. */ | |
| 9842 if (!isatty (0)) | |
| 9843 { | |
| 9844 stderr_out ("XEmacs: standard input is not a tty\n"); | |
| 9845 exit (1); | |
| 9846 } | |
| 9847 | |
| 9848 /* Look at the TERM variable */ | |
| 771 | 9849 if (!egetenv ("TERM")) |
| 428 | 9850 { |
| 9851 stderr_out ("Please set the environment variable TERM; see tset(1).\n"); | |
| 9852 exit (1); | |
| 9853 } | |
| 9854 | |
|
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|
9855 Vinitial_device_type = Qtty; |
| 428 | 9856 return; |
| 9857 #else /* not HAVE_TTY */ | |
| 9858 /* No DISPLAY specified, and no TTY support. */ | |
| 9859 stderr_out ("XEmacs: Cannot open display.\n\ | |
| 9860 Please set the environmental variable DISPLAY to an appropriate value.\n"); | |
| 9861 exit (1); | |
| 9862 #endif | |
| 9863 /* Unreached. */ | |
| 9864 } | |
| 9865 | |
| 9866 void | |
| 9867 syms_of_redisplay (void) | |
| 9868 { | |
| 563 | 9869 DEFSYMBOL (Qcursor_in_echo_area); |
| 9870 DEFSYMBOL (Qdisplay_warning_buffer); | |
| 9871 DEFSYMBOL (Qbar_cursor); | |
| 9872 DEFSYMBOL (Qtop_bottom); | |
| 9873 DEFSYMBOL (Qbuffer_list_changed_hook); | |
| 428 | 9874 |
| 9875 DEFSUBR (Fredisplay_echo_area); | |
| 9876 DEFSUBR (Fredraw_frame); | |
| 9877 DEFSUBR (Fredisplay_frame); | |
| 9878 DEFSUBR (Fredraw_device); | |
| 9879 DEFSUBR (Fredisplay_device); | |
| 9880 DEFSUBR (Fredraw_modeline); | |
| 9881 DEFSUBR (Fforce_cursor_redisplay); | |
| 9882 } | |
| 9883 | |
| 9884 void | |
| 9885 vars_of_redisplay (void) | |
| 9886 { | |
|
4952
19a72041c5ed
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4928
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|
9887 QSin_redisplay = build_defer_string ("(in redisplay)"); |
| 1292 | 9888 staticpro (&QSin_redisplay); |
| 428 | 9889 |
| 1318 | 9890 Vpost_redisplay_actions = Qnil; |
| 9891 staticpro (&Vpost_redisplay_actions); | |
| 9892 | |
| 428 | 9893 #if 0 |
| 9894 staticpro (&last_arrow_position); | |
| 9895 staticpro (&last_arrow_string); | |
| 9896 last_arrow_position = Qnil; | |
| 9897 last_arrow_string = Qnil; | |
| 9898 #endif /* 0 */ | |
| 9899 | |
| 9900 /* #### Probably temporary */ | |
| 9901 DEFVAR_INT ("redisplay-cache-adjustment", &cache_adjustment /* | |
| 9902 \(Temporary) Setting this will impact the performance of the internal | |
| 9903 line start cache. | |
| 9904 */ ); | |
| 9905 cache_adjustment = 2; | |
| 9906 | |
| 1268 | 9907 DEFVAR_INT ("maximum-preempts", &max_preempts /* |
| 9908 Maximum number of times redisplay can be preempted by user input. | |
| 9909 */ ); | |
| 9910 max_preempts = INIT_MAX_PREEMPTS; | |
| 9911 | |
| 428 | 9912 DEFVAR_INT_MAGIC ("pixel-vertical-clip-threshold", &vertical_clip /* |
| 9913 Minimum pixel height for clipped bottom display line. | |
| 9914 A clipped line shorter than this won't be displayed. | |
| 9915 */ , | |
| 9916 redisplay_variable_changed); | |
| 9917 vertical_clip = 5; | |
| 9918 | |
| 9919 DEFVAR_INT_MAGIC ("pixel-horizontal-clip-threshold", &horizontal_clip /* | |
| 9920 Minimum visible area for clipped glyphs at right boundary. | |
| 9921 Clipped glyphs shorter than this won't be displayed. | |
| 9922 Only pixmap glyph instances are currently allowed to be clipped. | |
| 9923 */ , | |
| 9924 redisplay_variable_changed); | |
| 9925 horizontal_clip = 5; | |
| 9926 | |
| 9927 DEFVAR_LISP ("global-mode-string", &Vglobal_mode_string /* | |
| 9928 String displayed by modeline-format's "%m" specification. | |
| 9929 */ ); | |
| 9930 Vglobal_mode_string = Qnil; | |
| 9931 | |
| 9932 DEFVAR_LISP_MAGIC ("overlay-arrow-position", &Voverlay_arrow_position /* | |
| 9933 Marker for where to display an arrow on top of the buffer text. | |
| 9934 This must be the beginning of a line in order to work. | |
| 9935 See also `overlay-arrow-string'. | |
| 9936 */ , | |
| 9937 redisplay_variable_changed); | |
| 9938 Voverlay_arrow_position = Qnil; | |
| 9939 | |
| 9940 DEFVAR_LISP_MAGIC ("overlay-arrow-string", &Voverlay_arrow_string /* | |
| 442 | 9941 String or glyph to display as an arrow. See also `overlay-arrow-position'. |
| 444 | 9942 \(Note that despite the name of this variable, it can be set to a glyph as |
| 442 | 9943 well as a string.) |
| 428 | 9944 */ , |
| 9945 redisplay_variable_changed); | |
| 9946 Voverlay_arrow_string = Qnil; | |
| 9947 | |
| 9948 DEFVAR_INT ("scroll-step", &scroll_step /* | |
| 9949 *The number of lines to try scrolling a window by when point moves out. | |
| 9950 If that fails to bring point back on frame, point is centered instead. | |
| 9951 If this is zero, point is always centered after it moves off screen. | |
| 9952 */ ); | |
| 9953 scroll_step = 0; | |
| 9954 | |
| 9955 DEFVAR_INT ("scroll-conservatively", &scroll_conservatively /* | |
| 9956 *Scroll up to this many lines, to bring point back on screen. | |
| 9957 */ ); | |
| 9958 scroll_conservatively = 0; | |
| 9959 | |
| 9960 DEFVAR_BOOL_MAGIC ("truncate-partial-width-windows", | |
| 9961 &truncate_partial_width_windows /* | |
| 9962 *Non-nil means truncate lines in all windows less than full frame wide. | |
| 9963 */ , | |
| 9964 redisplay_variable_changed); | |
| 9965 truncate_partial_width_windows = 1; | |
| 9966 | |
| 442 | 9967 DEFVAR_LISP ("visible-bell", &Vvisible_bell /* |
| 9968 *Non-nil substitutes a visual signal for the audible bell. | |
| 9969 | |
| 9970 Default behavior is to flash the whole screen. On some platforms, | |
| 9971 special effects are available using the following values: | |
| 9972 | |
| 3025 | 9973 `display' Flash the whole screen (ie, the default behavior). |
| 9974 `top-bottom' Flash only the top and bottom lines of the selected frame. | |
| 442 | 9975 |
| 9976 When effects are unavailable on a platform, the visual bell is the | |
| 9977 default, whole screen. (Currently only X supports any special effects.) | |
| 428 | 9978 */ ); |
| 442 | 9979 Vvisible_bell = Qnil; |
| 428 | 9980 |
| 9981 DEFVAR_BOOL ("no-redraw-on-reenter", &no_redraw_on_reenter /* | |
| 9982 *Non-nil means no need to redraw entire frame after suspending. | |
| 9983 A non-nil value is useful if the terminal can automatically preserve | |
| 9984 Emacs's frame display when you reenter Emacs. | |
| 9985 It is up to you to set this variable if your terminal can do that. | |
| 9986 */ ); | |
| 9987 no_redraw_on_reenter = 0; | |
| 9988 | |
| 9989 DEFVAR_LISP ("window-system", &Vwindow_system /* | |
| 9990 A symbol naming the window-system under which Emacs is running, | |
| 9991 such as `x', or nil if emacs is running on an ordinary terminal. | |
| 9992 | |
| 9993 Do not use this variable, except for GNU Emacs compatibility, as it | |
| 9994 gives wrong values in a multi-device environment. Use `console-type' | |
| 9995 instead. | |
| 9996 */ ); | |
| 9997 Vwindow_system = Qnil; | |
| 9998 | |
|
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|
9999 DEFVAR_CONST_LISP ("initial-device-type", &Vinitial_device_type /* |
|
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|
10000 The type of the first XEmacs device to be created. |
|
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|
10001 |
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|
10002 This is constant; it's used by the command line handling code to communicate |
|
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|
10003 to Lisp what type the initial device to be created should be. |
| 428 | 10004 */ ); |
|
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|
10005 Vinitial_device_type = Qnil; |
| 428 | 10006 |
| 10007 DEFVAR_BOOL ("cursor-in-echo-area", &cursor_in_echo_area /* | |
| 10008 Non-nil means put cursor in minibuffer, at end of any message there. | |
| 10009 */ ); | |
| 10010 cursor_in_echo_area = 0; | |
| 10011 | |
| 10012 /* #### Shouldn't this be generalized as follows: | |
| 10013 | |
| 10014 if nil, use block cursor. | |
| 10015 if a number, use a bar cursor of that width. | |
| 10016 Otherwise, use a 1-pixel bar cursor. | |
| 10017 | |
| 10018 #### Or better yet, this variable should be trashed entirely | |
| 10019 (use a Lisp-magic variable to maintain compatibility) | |
| 10020 and a specifier `cursor-shape' added, which allows a block | |
| 10021 cursor, a bar cursor, a flashing block or bar cursor, | |
| 10022 maybe a caret cursor, etc. */ | |
| 10023 | |
| 10024 DEFVAR_LISP ("bar-cursor", &Vbar_cursor /* | |
| 448 | 10025 *Use vertical bar cursor if non-nil. If t width is 1 pixel, otherwise 2. |
| 428 | 10026 */ ); |
| 10027 Vbar_cursor = Qnil; | |
| 10028 | |
| 442 | 10029 DEFVAR_LISP ("buffer-list-changed-hook", &Vbuffer_list_changed_hook /* |
| 10030 Function or functions to call when a frame's buffer list has changed. | |
| 10031 This is called during redisplay, before redisplaying each frame. | |
| 10032 Functions on this hook are called with one argument, the frame. | |
| 10033 */ ); | |
| 10034 Vbuffer_list_changed_hook = Qnil; | |
| 10035 | |
| 428 | 10036 DEFVAR_INT ("display-warning-tick", &display_warning_tick /* |
| 10037 Bump this to tell the C code to call `display-warning-buffer' | |
| 10038 at next redisplay. You should not normally change this; the function | |
| 10039 `display-warning' automatically does this at appropriate times. | |
| 10040 */ ); | |
| 10041 display_warning_tick = 0; | |
| 10042 | |
| 10043 DEFVAR_BOOL ("inhibit-warning-display", &inhibit_warning_display /* | |
| 10044 Non-nil means inhibit display of warning messages. | |
| 10045 You should *bind* this, not set it. Any pending warning messages | |
| 10046 will be displayed when the binding no longer applies. | |
| 10047 */ ); | |
| 10048 /* reset to 0 by startup.el after the splash screen has displayed. | |
| 10049 This way, the warnings don't obliterate the splash screen. */ | |
| 10050 inhibit_warning_display = 1; | |
| 10051 | |
| 10052 DEFVAR_BOOL ("column-number-start-at-one", &column_number_start_at_one /* | |
| 10053 *Non-nil means column display number starts at 1. | |
| 10054 */ ); | |
| 10055 column_number_start_at_one = 0; | |
| 10056 } | |
| 10057 | |
| 10058 void | |
| 10059 specifier_vars_of_redisplay (void) | |
| 10060 { | |
| 10061 DEFVAR_SPECIFIER ("left-margin-width", &Vleft_margin_width /* | |
| 10062 *Width of left margin. | |
| 10063 This is a specifier; use `set-specifier' to change it. | |
| 10064 */ ); | |
| 10065 Vleft_margin_width = Fmake_specifier (Qnatnum); | |
| 10066 set_specifier_fallback (Vleft_margin_width, list1 (Fcons (Qnil, Qzero))); | |
| 10067 set_specifier_caching (Vleft_margin_width, | |
| 438 | 10068 offsetof (struct window, left_margin_width), |
| 428 | 10069 some_window_value_changed, |
| 438 | 10070 offsetof (struct frame, left_margin_width), |
| 444 | 10071 margin_width_changed_in_frame, 0); |
| 428 | 10072 |
| 10073 DEFVAR_SPECIFIER ("right-margin-width", &Vright_margin_width /* | |
| 10074 *Width of right margin. | |
| 10075 This is a specifier; use `set-specifier' to change it. | |
| 10076 */ ); | |
| 10077 Vright_margin_width = Fmake_specifier (Qnatnum); | |
| 10078 set_specifier_fallback (Vright_margin_width, list1 (Fcons (Qnil, Qzero))); | |
| 10079 set_specifier_caching (Vright_margin_width, | |
| 438 | 10080 offsetof (struct window, right_margin_width), |
| 428 | 10081 some_window_value_changed, |
| 438 | 10082 offsetof (struct frame, right_margin_width), |
| 444 | 10083 margin_width_changed_in_frame, 0); |
| 428 | 10084 |
| 10085 DEFVAR_SPECIFIER ("minimum-line-ascent", &Vminimum_line_ascent /* | |
| 10086 *Minimum ascent height of lines. | |
| 10087 This is a specifier; use `set-specifier' to change it. | |
| 10088 */ ); | |
| 10089 Vminimum_line_ascent = Fmake_specifier (Qnatnum); | |
| 10090 set_specifier_fallback (Vminimum_line_ascent, list1 (Fcons (Qnil, Qzero))); | |
| 10091 set_specifier_caching (Vminimum_line_ascent, | |
| 438 | 10092 offsetof (struct window, minimum_line_ascent), |
| 428 | 10093 some_window_value_changed, |
| 444 | 10094 0, 0, 0); |
| 428 | 10095 |
| 10096 DEFVAR_SPECIFIER ("minimum-line-descent", &Vminimum_line_descent /* | |
| 10097 *Minimum descent height of lines. | |
| 10098 This is a specifier; use `set-specifier' to change it. | |
| 10099 */ ); | |
| 10100 Vminimum_line_descent = Fmake_specifier (Qnatnum); | |
| 10101 set_specifier_fallback (Vminimum_line_descent, list1 (Fcons (Qnil, Qzero))); | |
| 10102 set_specifier_caching (Vminimum_line_descent, | |
| 438 | 10103 offsetof (struct window, minimum_line_descent), |
| 428 | 10104 some_window_value_changed, |
| 444 | 10105 0, 0, 0); |
| 428 | 10106 |
| 10107 DEFVAR_SPECIFIER ("use-left-overflow", &Vuse_left_overflow /* | |
| 10108 *Non-nil means use the left outside margin as extra whitespace when | |
| 3025 | 10109 displaying `whitespace' or `inside-margin' glyphs. |
| 428 | 10110 This is a specifier; use `set-specifier' to change it. |
| 10111 */ ); | |
| 10112 Vuse_left_overflow = Fmake_specifier (Qboolean); | |
| 10113 set_specifier_fallback (Vuse_left_overflow, list1 (Fcons (Qnil, Qnil))); | |
| 10114 set_specifier_caching (Vuse_left_overflow, | |
| 438 | 10115 offsetof (struct window, use_left_overflow), |
| 428 | 10116 some_window_value_changed, |
| 444 | 10117 0, 0, 0); |
| 428 | 10118 |
| 10119 DEFVAR_SPECIFIER ("use-right-overflow", &Vuse_right_overflow /* | |
| 10120 *Non-nil means use the right outside margin as extra whitespace when | |
| 3025 | 10121 displaying `whitespace' or `inside-margin' glyphs. |
| 428 | 10122 This is a specifier; use `set-specifier' to change it. |
| 10123 */ ); | |
| 10124 Vuse_right_overflow = Fmake_specifier (Qboolean); | |
| 10125 set_specifier_fallback (Vuse_right_overflow, list1 (Fcons (Qnil, Qnil))); | |
| 10126 set_specifier_caching (Vuse_right_overflow, | |
| 438 | 10127 offsetof (struct window, use_right_overflow), |
| 428 | 10128 some_window_value_changed, |
| 444 | 10129 0, 0, 0); |
| 428 | 10130 |
| 10131 DEFVAR_SPECIFIER ("text-cursor-visible-p", &Vtext_cursor_visible_p /* | |
| 10132 *Non-nil means the text cursor is visible (this is usually the case). | |
| 10133 This is a specifier; use `set-specifier' to change it. | |
| 10134 */ ); | |
| 10135 Vtext_cursor_visible_p = Fmake_specifier (Qboolean); | |
| 10136 set_specifier_fallback (Vtext_cursor_visible_p, list1 (Fcons (Qnil, Qt))); | |
| 10137 set_specifier_caching (Vtext_cursor_visible_p, | |
| 438 | 10138 offsetof (struct window, text_cursor_visible_p), |
| 428 | 10139 text_cursor_visible_p_changed, |
| 444 | 10140 0, 0, 0); |
| 428 | 10141 |
| 10142 } |