Mercurial > hg > xemacs-beta
annotate src/redisplay.c @ 4868:0dd76c7b7846
Merge.
| author | Mike Sperber <sperber@deinprogramm.de> |
|---|---|
| date | Mon, 18 Jan 2010 08:48:09 +0100 |
| parents | 91b3d00e717f |
| children | ea701c23ed84 |
| 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. | |
| 3025 | 4 Copyright (C) 1995, 1996, 2000, 2001, 2002, 2003, 2005 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" | |
| 872 | 64 #include "objects-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. */ | |
|
4477
e34711681f30
Don't determine whether to call general device-type code at startup,
Aidan Kehoe <kehoea@parhasard.net>
parents:
4418
diff
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); | |
| 643 return DEVMETH (XDEVICE (FRAME_DEVICE (XFRAME (WINDOW_FRAME (w)))), | |
| 644 text_width, (XFRAME (WINDOW_FRAME (w)), | |
| 645 WINDOW_FACE_CACHEL (w, findex), str, len)); | |
| 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 |
| 867 | 664 (w, findex, Dynarr_atp (rtw_ichar_dynarr, 0), |
| 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 text_width, (XFRAME (frame), |
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694 &cachel, |
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695 Dynarr_atp (rtw_ichar_dynarr, 0), |
| 867 | 696 Dynarr_length (rtw_ichar_dynarr))); |
| 428 | 697 } |
| 698 | |
| 699 /* Return the display block from DL of the given TYPE. A display line | |
| 700 can have only one display block of each possible type. If DL does | |
| 701 not have a block of type TYPE, one will be created and added to DL. */ | |
| 702 | |
| 703 struct display_block * | |
| 704 get_display_block_from_line (struct display_line *dl, enum display_type type) | |
| 705 { | |
| 706 int elt; | |
| 707 struct display_block db; | |
| 708 | |
| 709 /* Check if this display line already has a block of the desired type and | |
| 710 if so, return it. */ | |
| 711 if (dl->display_blocks) | |
| 712 { | |
| 713 for (elt = 0; elt < Dynarr_length (dl->display_blocks); elt++) | |
| 714 { | |
| 715 if (Dynarr_at (dl->display_blocks, elt).type == type) | |
| 716 return Dynarr_atp (dl->display_blocks, elt); | |
| 717 } | |
| 718 | |
| 719 /* There isn't an active block of the desired type, but there | |
| 4187 | 720 might still be allocated blocks we need to reuse. */ |
| 428 | 721 if (elt < Dynarr_largest (dl->display_blocks)) |
| 722 { | |
| 723 struct display_block *dbp = Dynarr_atp (dl->display_blocks, elt); | |
| 724 | |
| 3025 | 725 /* "add" the block to the list */ |
| 428 | 726 Dynarr_increment (dl->display_blocks); |
| 727 | |
| 728 /* initialize and return */ | |
| 729 dbp->type = type; | |
| 730 return dbp; | |
| 731 } | |
| 732 } | |
| 733 else | |
| 734 { | |
| 735 /* This line doesn't have any display blocks, so initialize the display | |
| 4187 | 736 bock array. */ |
| 428 | 737 dl->display_blocks = Dynarr_new (display_block); |
| 738 } | |
| 739 | |
| 740 /* The line doesn't have a block of the desired type so go ahead and create | |
| 741 one and add it to the line. */ | |
| 742 xzero (db); | |
| 743 db.type = type; | |
| 744 db.runes = Dynarr_new (rune); | |
| 745 Dynarr_add (dl->display_blocks, db); | |
| 746 | |
| 747 /* Return the newly added display block. */ | |
| 748 elt = Dynarr_length (dl->display_blocks) - 1; | |
| 749 | |
| 750 return Dynarr_atp (dl->display_blocks, elt); | |
| 751 } | |
| 752 | |
| 753 static int | |
| 754 tab_char_width (struct window *w) | |
| 755 { | |
| 756 struct buffer *b = XBUFFER (w->buffer); | |
| 757 int char_tab_width = XINT (b->tab_width); | |
| 758 | |
| 759 if (char_tab_width <= 0 || char_tab_width > 1000) char_tab_width = 8; | |
| 760 | |
| 761 return char_tab_width; | |
| 762 } | |
| 763 | |
| 764 static int | |
| 765 space_width (struct window *w) | |
| 766 { | |
| 3659 | 767 /* While tabs are traditionally composed of spaces, for variable-width |
| 428 | 768 fonts the space character tends to give too narrow a value. So |
| 769 we use 'n' instead. Except that we don't. We use the default | |
| 770 character width for the default face. If this is actually | |
| 771 defined by the font then it is probably the best thing to | |
| 772 actually use. If it isn't, we have assumed it is 'n' and have | |
| 773 already calculated its width. Thus we can avoid a call to | |
| 774 XTextWidth on X frames by just querying the default width. */ | |
| 775 return XFONT_INSTANCE | |
| 776 (WINDOW_FACE_CACHEL_FONT (w, DEFAULT_INDEX, Vcharset_ascii))->width; | |
| 777 } | |
| 778 | |
| 779 static int | |
| 780 tab_pix_width (struct window *w) | |
| 781 { | |
| 782 return space_width (w) * tab_char_width (w); | |
| 783 } | |
| 784 | |
| 785 /* Given a pixel position in a window, return the pixel location of | |
| 786 the next tabstop. Tabs are calculated from the left window edge in | |
| 787 terms of spaces displayed in the default face. Formerly the space | |
| 788 width was determined using the currently active face. That method | |
| 789 leads to tabstops which do not line up. */ | |
| 790 | |
| 791 static int | |
| 792 next_tab_position (struct window *w, int start_pixpos, int left_pixpos) | |
| 793 { | |
| 794 int n_pos = left_pixpos; | |
| 795 int pix_tab_width = tab_pix_width (w); | |
| 796 | |
| 797 /* Adjust n_pos for any hscrolling which has happened. */ | |
| 798 if (WINDOW_SCROLLED (w)) | |
| 799 n_pos -= space_width (w) * (w->hscroll - 1) + w->left_xoffset; | |
| 800 | |
| 801 while (n_pos <= start_pixpos) | |
| 802 n_pos += pix_tab_width; | |
| 803 | |
| 804 return n_pos; | |
| 805 } | |
| 806 | |
| 807 /* For the given window, calculate the outside and margin boundaries for a | |
| 808 display line. The whitespace boundaries must be calculated by the text | |
| 809 layout routines. */ | |
| 810 | |
| 811 layout_bounds | |
| 812 calculate_display_line_boundaries (struct window *w, int modeline) | |
| 813 { | |
| 814 layout_bounds bounds; | |
| 815 | |
| 816 /* Set the outermost boundaries which are the boundaries of the | |
| 817 window itself minus the gutters (and minus the scrollbars if this | |
| 818 is for the modeline). */ | |
| 819 if (!modeline) | |
| 820 { | |
| 821 bounds.left_out = WINDOW_TEXT_LEFT (w); | |
| 822 bounds.right_out = WINDOW_TEXT_RIGHT (w); | |
| 823 } | |
| 824 else | |
| 825 { | |
| 826 bounds.left_out = WINDOW_MODELINE_LEFT (w); | |
| 827 bounds.right_out = WINDOW_MODELINE_RIGHT (w); | |
| 828 } | |
| 829 | |
| 830 /* The inner boundaries mark where the glyph margins are located. */ | |
| 831 bounds.left_in = bounds.left_out + window_left_margin_width (w); | |
| 832 bounds.right_in = bounds.right_out - window_right_margin_width (w); | |
| 833 | |
| 834 /* We cannot fully calculate the whitespace boundaries as they | |
| 835 depend on the contents of the line being displayed. */ | |
| 836 bounds.left_white = bounds.left_in; | |
| 837 bounds.right_white = bounds.right_in; | |
| 838 | |
| 839 return bounds; | |
| 840 } | |
| 841 | |
| 819 | 842 /* This takes a display_block and its containing line and corrects the yoffset |
| 843 of each glyph in the block to cater for the ascent of the line as a | |
| 844 whole. Must be called *after* the line-ascent is known! */ | |
| 845 | |
| 846 static void | |
| 847 calculate_yoffset (struct display_line *dl, struct display_block *fixup) | |
| 848 { | |
| 849 int i; | |
| 850 for (i=0; i<Dynarr_length (fixup->runes); i++) | |
| 851 { | |
| 852 struct rune *r = Dynarr_atp (fixup->runes,i); | |
| 853 if (r->type == RUNE_DGLYPH) | |
| 4187 | 854 { |
| 855 if (r->object.dglyph.ascent < dl->ascent) | |
| 856 r->object.dglyph.yoffset = dl->ascent - r->object.dglyph.ascent + | |
| 819 | 857 r->object.dglyph.descent; |
| 4187 | 858 } |
| 819 | 859 } |
| 860 } | |
| 861 | |
| 862 /* Calculate the textual baseline (the ascent and descent values for the | |
| 863 display_line as a whole). | |
| 864 | |
| 865 If the baseline is completely blank, or contains no manually positioned | |
| 866 glyphs, then the textual baseline is simply the baseline of the default font. | |
| 867 (The `contains no manually positioned glyphs' part is actually done for | |
| 867 | 868 us by `add_ichar_rune'.) |
| 819 | 869 |
| 870 If the baseline contains pixmaps, and they're all manually positioned, then | |
| 871 the textual baseline location is constrained that way, and we need do no | |
| 872 work. | |
| 873 | |
| 874 If the baseline contains pixmaps, and at least one is automatically | |
| 875 positioned, then the textual ascent is the largest ascent on the line, and | |
| 876 the textual descent is the largest descent (which is how things are set up at | |
| 877 entry to this function anyway): except that if the max_ascent + max_descent | |
| 878 is too small for the height of the line (say you've adjusted the baseline of | |
| 879 a short glyph, and there's a tall one next to it), then take the ascent and | |
| 880 descent for the line individually from the largest of the explicitly set | |
| 881 ascent/descent, and the rescaled ascent/descent of the default font, scaled | |
| 882 such that the largest glyph will fit. | |
| 883 | |
| 884 This means that if you have a short glyph (but taller than the default | |
| 885 font's descent) forced right under the baseline, and a really tall | |
| 886 automatically positioned glyph, that the descent for the line is just big | |
| 887 enough for the manually positioned short glyph, and the tall one uses as | |
| 888 much of that space as the default font would were it as tall as the tall | |
| 889 glyph; but that the ascent is big enough for the tall glyph to fit. | |
| 890 | |
| 891 This behaviour means that under no circumstances will changing the baseline | |
| 892 of a short glyph cause a tall glyph to move around; nor will it move the | |
| 893 textual baseline more than necessary. (Changing a tall glyph's baseline | |
| 894 might move the text's baseline arbitrarily, of course.) */ | |
| 895 | |
| 896 static void | |
| 897 calculate_baseline (pos_data *data) | |
| 898 { | |
| 899 /* Blank line: baseline is default font's baseline. */ | |
| 900 | |
| 901 if (!data->new_ascent && !data->new_descent) | |
| 902 { | |
| 903 /* We've got a blank line so initialize these values from the default | |
| 4187 | 904 face. */ |
| 819 | 905 default_face_font_info (data->window, &data->new_ascent, |
| 906 &data->new_descent, 0, 0, 0); | |
| 907 } | |
| 4187 | 908 |
| 819 | 909 /* No automatically positioned glyphs? Return at once. */ |
| 910 if (!data->need_baseline_computation) | |
| 911 return; | |
| 912 | |
| 913 /* Is the tallest glyph on the line automatically positioned? | |
| 914 If it's manually positioned, or it's automatically positioned | |
| 915 and there's enough room for it anyway, we need do no more work. */ | |
| 916 if (data->max_pixmap_height > data->new_ascent + data->new_descent) | |
| 917 { | |
| 918 int default_font_ascent, default_font_descent, default_font_height; | |
| 919 int scaled_default_font_ascent, scaled_default_font_descent; | |
| 4187 | 920 |
| 819 | 921 default_face_font_info (data->window, &default_font_ascent, |
| 922 &default_font_descent, &default_font_height, | |
| 923 0, 0); | |
| 924 | |
| 925 scaled_default_font_ascent = data->max_pixmap_height * | |
| 926 default_font_ascent / default_font_height; | |
| 927 | |
| 928 data->new_ascent = max (data->new_ascent, scaled_default_font_ascent); | |
| 929 | |
| 930 /* The ascent may have expanded now. Do we still need to grow the descent, | |
| 4187 | 931 or are things big enough? |
| 932 | |
| 933 The +1 caters for the baseline row itself. */ | |
| 819 | 934 if (data->max_pixmap_height > data->new_ascent + data->new_descent) |
| 4187 | 935 { |
| 936 scaled_default_font_descent = (data->max_pixmap_height * | |
| 819 | 937 default_font_descent / default_font_height) + 1; |
| 938 | |
| 4187 | 939 data->new_descent = max (data->new_descent, scaled_default_font_descent); |
| 940 } | |
| 819 | 941 } |
| 942 } | |
| 943 | |
| 428 | 944 /* Given a display line and a starting position, ensure that the |
| 945 contents of the display line accurately represent the visual | |
| 946 representation of the buffer contents starting from the given | |
| 947 position when displayed in the given window. The display line ends | |
| 948 when the contents of the line reach the right boundary of the given | |
| 949 window. */ | |
| 950 | |
| 665 | 951 static Charbpos |
| 428 | 952 generate_display_line (struct window *w, struct display_line *dl, int bounds, |
| 665 | 953 Charbpos start_pos, prop_block_dynarr **prop, |
| 428 | 954 int type) |
| 955 { | |
| 826 | 956 Charbpos ret_charpos; |
| 428 | 957 int overlay_width; |
| 958 struct buffer *b = XBUFFER (WINDOW_BUFFER (w)); | |
| 959 | |
| 960 /* If our caller hasn't already set the boundaries, then do so now. */ | |
| 961 if (!bounds) | |
| 962 dl->bounds = calculate_display_line_boundaries (w, 0); | |
| 963 | |
| 964 /* Reset what this line is using. */ | |
| 965 if (dl->display_blocks) | |
| 966 Dynarr_reset (dl->display_blocks); | |
| 967 if (dl->left_glyphs) | |
| 968 { | |
| 969 Dynarr_free (dl->left_glyphs); | |
| 970 dl->left_glyphs = 0; | |
| 971 } | |
| 972 if (dl->right_glyphs) | |
| 973 { | |
| 974 Dynarr_free (dl->right_glyphs); | |
| 975 dl->right_glyphs = 0; | |
| 976 } | |
| 977 | |
| 978 /* We aren't generating a modeline at the moment. */ | |
| 979 dl->modeline = 0; | |
| 980 | |
| 981 /* Create a display block for the text region of the line. */ | |
| 982 { | |
| 983 /* #### urk urk urk!!! Chuck fix this shit! */ | |
| 665 | 984 Bytebpos hacked_up_bytebpos = |
| 985 create_text_block (w, dl, charbpos_to_bytebpos (b, start_pos), | |
| 428 | 986 prop, type); |
| 826 | 987 if (hacked_up_bytebpos > BYTE_BUF_ZV (b)) |
| 988 ret_charpos = BUF_ZV (b) + 1; | |
| 428 | 989 else |
| 826 | 990 ret_charpos = bytebpos_to_charbpos (b, hacked_up_bytebpos); |
| 428 | 991 } |
| 826 | 992 dl->charpos = start_pos; |
| 993 if (dl->end_charpos < dl->charpos) | |
| 994 dl->end_charpos = dl->charpos; | |
| 428 | 995 |
| 996 if (MARKERP (Voverlay_arrow_position) | |
| 997 && EQ (w->buffer, Fmarker_buffer (Voverlay_arrow_position)) | |
| 998 && start_pos == marker_position (Voverlay_arrow_position) | |
| 999 && (STRINGP (Voverlay_arrow_string) | |
| 1000 || GLYPHP (Voverlay_arrow_string))) | |
| 1001 { | |
| 1002 overlay_width = create_overlay_glyph_block (w, dl); | |
| 1003 } | |
| 1004 else | |
| 1005 overlay_width = 0; | |
| 1006 | |
| 1007 /* If there are left glyphs associated with any character in the | |
| 1008 text block, then create a display block to handle them. */ | |
| 1009 if (dl->left_glyphs != NULL && Dynarr_length (dl->left_glyphs)) | |
| 1010 create_left_glyph_block (w, dl, overlay_width); | |
| 1011 | |
| 1012 /* If there are right glyphs associated with any character in the | |
| 1013 text block, then create a display block to handle them. */ | |
| 1014 if (dl->right_glyphs != NULL && Dynarr_length (dl->right_glyphs)) | |
| 1015 create_right_glyph_block (w, dl); | |
| 1016 | |
| 1017 /* In the future additional types of display blocks may be generated | |
| 1018 here. */ | |
| 1019 | |
| 826 | 1020 w->last_redisplay_pos = ret_charpos; |
| 1021 | |
| 1022 return ret_charpos; | |
| 428 | 1023 } |
| 1024 | |
| 1025 /* Adds an hscroll glyph to a display block. If this is called, then | |
| 1026 the block had better be empty. | |
| 1027 | |
| 1028 Yes, there are multiple places where this function is called but | |
| 1029 that is the way it has to be. Each calling function has to deal | |
| 826 | 1030 with byte_start_col_enabled a little differently depending on the |
| 428 | 1031 object being worked with. */ |
| 1032 | |
| 1033 static prop_block_dynarr * | |
| 1034 add_hscroll_rune (pos_data *data) | |
| 1035 { | |
| 1036 struct glyph_block gb; | |
| 1037 prop_block_dynarr *retval; | |
| 826 | 1038 Bytebpos byte_old_cursor_charpos = data->byte_cursor_charpos; |
| 647 | 1039 int old_cursor_type = data->cursor_type; |
| 826 | 1040 Bytebpos byte_old_charpos = data->byte_charpos; |
| 428 | 1041 |
| 1042 if (data->cursor_type == CURSOR_ON | |
| 826 | 1043 && data->byte_cursor_charpos >= data->byte_start_col_enabled |
| 1044 && data->byte_cursor_charpos <= data->byte_charpos) | |
| 1045 { | |
| 1046 data->byte_cursor_charpos = data->byte_start_col_enabled; | |
| 428 | 1047 } |
| 1048 else | |
| 1049 { | |
| 1050 data->cursor_type = NO_CURSOR; | |
| 1051 } | |
| 1052 | |
| 826 | 1053 data->byte_endpos = data->byte_charpos; |
| 1054 data->byte_charpos = data->byte_start_col_enabled; | |
| 428 | 1055 |
| 1056 gb.extent = Qnil; | |
| 1057 gb.glyph = Vhscroll_glyph; | |
| 1058 { | |
| 1059 int oldpixpos = data->pixpos; | |
| 442 | 1060 retval = add_glyph_rune (data, &gb, BEGIN_GLYPHS, 0, |
| 428 | 1061 GLYPH_CACHEL (XWINDOW (data->window), |
| 1062 HSCROLL_GLYPH_INDEX)); | |
| 1063 data->hscroll_glyph_width_adjust = | |
| 1064 data->pixpos - oldpixpos - space_width (XWINDOW (data->window)); | |
| 1065 } | |
| 826 | 1066 data->byte_endpos = 0; |
| 1067 data->byte_cursor_charpos = byte_old_cursor_charpos; | |
| 428 | 1068 data->cursor_type = old_cursor_type; |
| 826 | 1069 data->byte_charpos = byte_old_charpos; |
| 1070 | |
| 1071 data->byte_start_col_enabled = 0; | |
| 428 | 1072 return retval; |
| 1073 } | |
| 1074 | |
| 793 | 1075 /* Adds a character rune to a display block. If there is not enough room |
| 1076 to fit the rune on the display block (as determined by the MAX_PIXPOS) | |
| 1077 then it adds nothing and returns ADD_FAILED. If | |
| 1078 NO_CONTRIBUTE_TO_LINE_HEIGHT is non-zero, don't allow the char's height | |
| 867 | 1079 to affect the total line height. (See add_ibyte_string_runes()). */ |
| 428 | 1080 |
| 1081 static prop_block_dynarr * | |
| 867 | 1082 add_ichar_rune_1 (pos_data *data, int no_contribute_to_line_height) |
| 428 | 1083 { |
| 1084 struct rune rb, *crb; | |
| 1085 int width, local; | |
| 1086 | |
| 1087 if (data->start_col) | |
| 1088 { | |
| 1089 data->start_col--; | |
| 1090 | |
| 1091 if (data->start_col) | |
| 1092 return NULL; | |
| 1093 } | |
| 1094 | |
| 826 | 1095 if (data->byte_start_col_enabled) |
| 428 | 1096 { |
| 1097 return add_hscroll_rune (data); | |
| 1098 } | |
| 1099 | |
| 1100 if (data->ch == '\n') | |
| 1101 { | |
| 1102 data->font_is_bogus = 0; | |
| 1103 /* Cheesy end-of-line pseudo-character. */ | |
| 1104 width = data->blank_width; | |
| 1105 } | |
| 1106 else | |
| 1107 { | |
| 867 | 1108 Lisp_Object charset = ichar_charset (data->ch); |
| 428 | 1109 if (!EQ (charset, data->last_charset) || |
| 1110 data->findex != data->last_findex) | |
| 1111 { | |
| 1112 /* OK, we need to do things the hard way. */ | |
| 1113 struct window *w = XWINDOW (data->window); | |
| 1114 struct face_cachel *cachel = WINDOW_FACE_CACHEL (w, data->findex); | |
| 1115 Lisp_Object font_instance = | |
| 1116 ensure_face_cachel_contains_charset (cachel, data->window, | |
| 1117 charset); | |
| 440 | 1118 Lisp_Font_Instance *fi; |
| 428 | 1119 |
| 1120 if (EQ (font_instance, Vthe_null_font_instance)) | |
| 1121 { | |
| 1122 font_instance = FACE_CACHEL_FONT (cachel, Vcharset_ascii); | |
| 1123 data->font_is_bogus = 1; | |
| 1124 } | |
| 1125 else | |
| 1126 data->font_is_bogus = 0; | |
| 1127 | |
| 1128 fi = XFONT_INSTANCE (font_instance); | |
| 771 | 1129 if (!fi->proportional_p || data->font_is_bogus) |
| 1130 { | |
| 867 | 1131 Ichar ch = data->font_is_bogus ? '~' : data->ch; |
| 771 | 1132 |
| 1133 data->last_char_width = | |
|
4815
6540302eedf5
Fix query_string_geometry lookup domain
Didier Verna <didier@lrde.epita.fr>
parents:
4528
diff
changeset
|
1134 redisplay_window_text_width_ichar_string |
|
6540302eedf5
Fix query_string_geometry lookup domain
Didier Verna <didier@lrde.epita.fr>
parents:
4528
diff
changeset
|
1135 (XWINDOW (data->window), data->findex, &ch, 1); |
| 771 | 1136 } |
| 428 | 1137 else |
| 1138 data->last_char_width = -1; | |
| 819 | 1139 |
| 793 | 1140 if (!no_contribute_to_line_height) |
| 1141 { | |
| 1142 data->new_ascent = max (data->new_ascent, (int) fi->ascent); | |
| 1143 data->new_descent = max (data->new_descent, (int) fi->descent); | |
| 1144 } | |
| 819 | 1145 |
| 428 | 1146 data->last_charset = charset; |
| 1147 data->last_findex = data->findex; | |
| 1148 } | |
| 1149 | |
| 1150 width = data->last_char_width; | |
| 771 | 1151 if (width < 0) /* proportional fonts */ |
|
4815
6540302eedf5
Fix query_string_geometry lookup domain
Didier Verna <didier@lrde.epita.fr>
parents:
4528
diff
changeset
|
1152 width = redisplay_window_text_width_ichar_string |
|
6540302eedf5
Fix query_string_geometry lookup domain
Didier Verna <didier@lrde.epita.fr>
parents:
4528
diff
changeset
|
1153 (XWINDOW (data->window), data->findex, &data->ch, 1); |
| 428 | 1154 } |
| 1155 | |
| 1156 if (data->max_pixpos != -1 && (data->pixpos + width > data->max_pixpos)) | |
| 1157 { | |
| 1158 return ADD_FAILED; | |
| 1159 } | |
| 1160 | |
| 1161 if (Dynarr_length (data->db->runes) < Dynarr_largest (data->db->runes)) | |
| 1162 { | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
1163 crb = Dynarr_past_lastp (data->db->runes); |
| 428 | 1164 local = 0; |
| 1165 } | |
| 1166 else | |
| 1167 { | |
| 1168 crb = &rb; | |
| 1169 local = 1; | |
| 1170 } | |
| 1171 | |
| 1172 crb->findex = data->findex; | |
| 1173 crb->xpos = data->pixpos; | |
| 1174 crb->width = width; | |
| 826 | 1175 if (data->byte_charpos) |
| 428 | 1176 { |
| 1177 if (NILP (data->string)) | |
| 826 | 1178 crb->charpos = |
| 793 | 1179 bytebpos_to_charbpos (XBUFFER (WINDOW_BUFFER |
| 1180 (XWINDOW (data->window))), | |
| 826 | 1181 data->byte_charpos); |
| 428 | 1182 else |
| 826 | 1183 crb->charpos = |
| 1184 string_index_byte_to_char (data->string, data->byte_charpos); | |
| 428 | 1185 } |
| 1186 else if (data->is_modeline) | |
| 826 | 1187 crb->charpos = data->modeline_charpos; |
| 428 | 1188 else |
| 442 | 1189 /* Text but not in buffer */ |
| 826 | 1190 crb->charpos = 0; |
| 428 | 1191 crb->type = RUNE_CHAR; |
| 1192 crb->object.chr.ch = data->font_is_bogus ? '~' : data->ch; | |
| 1193 crb->endpos = 0; | |
| 1194 | |
| 1195 if (data->cursor_type == CURSOR_ON) | |
| 1196 { | |
| 826 | 1197 if (data->byte_charpos == data->byte_cursor_charpos) |
| 428 | 1198 { |
| 1199 crb->cursor_type = CURSOR_ON; | |
| 1200 data->cursor_x = Dynarr_length (data->db->runes); | |
| 1201 } | |
| 1202 else | |
| 1203 crb->cursor_type = CURSOR_OFF; | |
| 1204 } | |
| 1205 else if (data->cursor_type == NEXT_CURSOR) | |
| 1206 { | |
| 1207 crb->cursor_type = CURSOR_ON; | |
| 1208 data->cursor_x = Dynarr_length (data->db->runes); | |
| 1209 data->cursor_type = NO_CURSOR; | |
| 1210 } | |
| 1211 else if (data->cursor_type == IGNORE_CURSOR) | |
| 1212 crb->cursor_type = IGNORE_CURSOR; | |
| 1213 else | |
| 1214 crb->cursor_type = CURSOR_OFF; | |
| 1215 | |
| 1216 if (local) | |
| 1217 Dynarr_add (data->db->runes, *crb); | |
| 1218 else | |
| 1219 Dynarr_increment (data->db->runes); | |
| 1220 | |
| 1221 data->pixpos += width; | |
| 1222 | |
| 1223 return NULL; | |
| 1224 } | |
| 1225 | |
| 793 | 1226 static prop_block_dynarr * |
| 867 | 1227 add_ichar_rune (pos_data *data) |
| 1228 { | |
| 1229 return add_ichar_rune_1 (data, 0); | |
| 1230 } | |
| 1231 | |
| 1232 /* Given a string C_STRING of length C_LENGTH, call add_ichar_rune for | |
| 793 | 1233 each character in the string. Propagate any left-over data unless |
| 1234 NO_PROP is non-zero. If NO_CONTRIBUTE_TO_LINE_HEIGHT is non-zero, don't | |
| 1235 allow this character to increase the total height of the line. (This is | |
| 1236 used when the character is part of a text glyph. In that case, the | |
| 1237 glyph code itself adjusts the line height as necessary, depending on | |
| 1238 whether glyph-contrib-p is true.) */ | |
| 428 | 1239 |
| 1240 static prop_block_dynarr * | |
| 867 | 1241 add_ibyte_string_runes (pos_data *data, Ibyte *c_string, |
| 793 | 1242 Bytecount c_length, int no_prop, |
| 1243 int no_contribute_to_line_height) | |
| 428 | 1244 { |
| 867 | 1245 Ibyte *pos, *end = c_string + c_length; |
| 428 | 1246 prop_block_dynarr *prop; |
| 1247 | |
| 1248 /* #### This function is too simplistic. It needs to do the same | |
| 1249 sort of character interpretation (display-table lookup, | |
| 1250 ctl-arrow checking), etc. that create_text_block() does. | |
| 1251 The functionality to do this in that routine needs to be | |
| 1252 modularized. */ | |
| 1253 | |
| 1254 for (pos = c_string; pos < end;) | |
| 1255 { | |
| 867 | 1256 Ibyte *old_pos = pos; |
| 1257 | |
| 1258 data->ch = itext_ichar (pos); | |
| 1259 | |
| 1260 prop = add_ichar_rune_1 (data, no_contribute_to_line_height); | |
| 428 | 1261 |
| 1262 if (prop) | |
| 1263 { | |
| 1264 if (no_prop) | |
| 1265 return ADD_FAILED; | |
| 1266 else | |
| 1267 { | |
| 1268 struct prop_block pb; | |
| 1269 Bytecount len = end - pos; | |
| 1270 prop = Dynarr_new (prop_block); | |
| 1271 | |
| 1272 pb.type = PROP_STRING; | |
| 867 | 1273 pb.data.p_string.str = xnew_array (Ibyte, len); |
| 428 | 1274 strncpy ((char *) pb.data.p_string.str, (char *) pos, len); |
| 1275 pb.data.p_string.len = len; | |
| 1276 | |
| 1277 Dynarr_add (prop, pb); | |
| 1278 return prop; | |
| 1279 } | |
| 1280 } | |
| 867 | 1281 INC_IBYTEPTR (pos); |
| 428 | 1282 assert (pos <= end); |
| 464 | 1283 /* #### Duplicate code from add_string_to_fstring_db_runes |
| 1284 should we do more?*/ | |
| 1285 data->bytepos += pos - old_pos; | |
| 428 | 1286 } |
| 1287 | |
| 1288 return NULL; | |
| 1289 } | |
| 1290 | |
| 1291 /* Add a single rune of the specified width. The area covered by this | |
| 1292 rune will be displayed in the foreground color of the associated | |
| 1293 face. */ | |
| 1294 | |
| 1295 static prop_block_dynarr * | |
| 1296 add_blank_rune (pos_data *data, struct window *w, int char_tab_width) | |
| 1297 { | |
| 1298 struct rune rb; | |
| 1299 | |
| 1300 /* If data->start_col is not 0 then this call to add_blank_rune must have | |
| 1301 been to add it as a tab. */ | |
| 1302 if (data->start_col) | |
| 1303 { | |
| 1304 /* assert (w != NULL) */ | |
| 1305 prop_block_dynarr *retval; | |
| 1306 | |
| 1307 /* If we have still not fully scrolled horizontally, subtract | |
| 4187 | 1308 the width of this tab and return. */ |
| 428 | 1309 if (char_tab_width < data->start_col) |
| 1310 { | |
| 1311 data->start_col -= char_tab_width; | |
| 1312 return NULL; | |
| 1313 } | |
| 1314 else if (char_tab_width == data->start_col) | |
| 1315 data->blank_width = 0; | |
| 1316 else | |
| 1317 { | |
| 1318 int spcwid = space_width (w); | |
| 1319 | |
| 1320 if (spcwid >= data->blank_width) | |
| 1321 data->blank_width = 0; | |
| 1322 else | |
| 1323 data->blank_width -= spcwid; | |
| 1324 } | |
| 1325 | |
| 1326 data->start_col = 0; | |
| 1327 retval = add_hscroll_rune (data); | |
| 1328 | |
| 1329 /* Could be caused by the handling of the hscroll rune. */ | |
| 1330 if (retval != NULL || !data->blank_width) | |
| 1331 return retval; | |
| 1332 } | |
| 1333 | |
| 1334 /* Blank runes are always calculated to fit. */ | |
| 1335 assert (data->pixpos + data->blank_width <= data->max_pixpos); | |
| 1336 | |
| 1337 rb.findex = data->findex; | |
| 1338 rb.xpos = data->pixpos; | |
| 1339 rb.width = data->blank_width; | |
| 826 | 1340 if (data->byte_charpos) |
| 1341 rb.charpos = | |
| 665 | 1342 bytebpos_to_charbpos (XBUFFER (WINDOW_BUFFER (XWINDOW (data->window))), |
| 826 | 1343 data->byte_charpos); |
| 428 | 1344 else |
| 1345 /* #### and this is really correct too? */ | |
| 826 | 1346 rb.charpos = 0; |
| 428 | 1347 rb.endpos = 0; |
| 1348 rb.type = RUNE_BLANK; | |
| 1349 | |
| 1350 if (data->cursor_type == CURSOR_ON) | |
| 1351 { | |
| 826 | 1352 if (data->byte_charpos == data->byte_cursor_charpos) |
| 428 | 1353 { |
| 1354 rb.cursor_type = CURSOR_ON; | |
| 1355 data->cursor_x = Dynarr_length (data->db->runes); | |
| 1356 } | |
| 1357 else | |
| 1358 rb.cursor_type = CURSOR_OFF; | |
| 1359 } | |
| 1360 else if (data->cursor_type == NEXT_CURSOR) | |
| 1361 { | |
| 1362 rb.cursor_type = CURSOR_ON; | |
| 1363 data->cursor_x = Dynarr_length (data->db->runes); | |
| 1364 data->cursor_type = NO_CURSOR; | |
| 1365 } | |
| 1366 else | |
| 1367 rb.cursor_type = CURSOR_OFF; | |
| 1368 | |
| 1369 Dynarr_add (data->db->runes, rb); | |
| 1370 data->pixpos += data->blank_width; | |
| 1371 | |
| 1372 return NULL; | |
| 1373 } | |
| 1374 | |
| 1375 /* Add runes representing a character in octal. */ | |
| 1376 | |
| 1377 #define ADD_NEXT_OCTAL_RUNE_CHAR do \ | |
| 1378 { \ | |
| 867 | 1379 if (add_failed || (add_failed = add_ichar_rune (data))) \ |
| 428 | 1380 { \ |
| 1381 struct prop_block pb; \ | |
| 1382 if (!prop) \ | |
| 1383 prop = Dynarr_new (prop_block); \ | |
| 1384 \ | |
| 1385 pb.type = PROP_CHAR; \ | |
| 1386 pb.data.p_char.ch = data->ch; \ | |
| 1387 pb.data.p_char.cursor_type = data->cursor_type; \ | |
| 1388 Dynarr_add (prop, pb); \ | |
| 1389 } \ | |
| 1390 } while (0) | |
| 1391 | |
| 1392 static prop_block_dynarr * | |
| 1393 add_octal_runes (pos_data *data) | |
| 1394 { | |
| 819 | 1395 prop_block_dynarr *add_failed, *prop = 0; |
| 867 | 1396 Ichar orig_char = data->ch; |
| 647 | 1397 int orig_cursor_type = data->cursor_type; |
| 428 | 1398 |
| 1399 /* Initialize */ | |
| 1400 add_failed = NULL; | |
| 1401 | |
| 1402 if (data->start_col) | |
| 1403 data->start_col--; | |
| 1404 | |
| 1405 if (!data->start_col) | |
| 1406 { | |
| 826 | 1407 if (data->byte_start_col_enabled) |
| 428 | 1408 { |
| 1409 add_failed = add_hscroll_rune (data); | |
| 1410 } | |
| 1411 else | |
| 1412 { | |
| 1413 struct glyph_block gb; | |
| 1414 struct window *w = XWINDOW (data->window); | |
| 1415 | |
| 1416 gb.extent = Qnil; | |
| 1417 gb.glyph = Voctal_escape_glyph; | |
| 1418 add_failed = | |
| 1419 add_glyph_rune (data, &gb, BEGIN_GLYPHS, 1, | |
| 1420 GLYPH_CACHEL (w, OCT_ESC_GLYPH_INDEX)); | |
| 1421 } | |
| 1422 } | |
| 1423 | |
| 1424 /* We only propagate information if the glyph was partially | |
| 1425 added. */ | |
| 1426 if (add_failed) | |
| 1427 return add_failed; | |
| 1428 | |
| 1429 data->cursor_type = IGNORE_CURSOR; | |
| 1430 | |
| 1431 if (data->ch >= 0x100) | |
| 1432 { | |
| 1433 /* If the character is an extended Mule character, it could have | |
| 3498 | 1434 up to 21 bits. For the moment, we treat it as a seven-digit |
| 428 | 1435 octal number. This is not that pretty, but whatever. */ |
| 1436 data->ch = (7 & (orig_char >> 18)) + '0'; | |
| 1437 ADD_NEXT_OCTAL_RUNE_CHAR; | |
| 1438 | |
| 1439 data->ch = (7 & (orig_char >> 15)) + '0'; | |
| 1440 ADD_NEXT_OCTAL_RUNE_CHAR; | |
| 1441 | |
| 1442 data->ch = (7 & (orig_char >> 12)) + '0'; | |
| 1443 ADD_NEXT_OCTAL_RUNE_CHAR; | |
| 1444 | |
| 1445 data->ch = (7 & (orig_char >> 9)) + '0'; | |
| 1446 ADD_NEXT_OCTAL_RUNE_CHAR; | |
| 1447 } | |
| 1448 | |
| 1449 data->ch = (7 & (orig_char >> 6)) + '0'; | |
| 1450 ADD_NEXT_OCTAL_RUNE_CHAR; | |
| 1451 | |
| 1452 data->ch = (7 & (orig_char >> 3)) + '0'; | |
| 1453 ADD_NEXT_OCTAL_RUNE_CHAR; | |
| 1454 | |
| 1455 data->ch = (7 & orig_char) + '0'; | |
| 1456 ADD_NEXT_OCTAL_RUNE_CHAR; | |
| 1457 | |
| 1458 data->cursor_type = orig_cursor_type; | |
| 819 | 1459 return NULL; |
| 428 | 1460 } |
| 1461 | |
| 1462 #undef ADD_NEXT_OCTAL_RUNE_CHAR | |
| 1463 | |
| 1464 /* Add runes representing a control character to a display block. */ | |
| 1465 | |
| 1466 static prop_block_dynarr * | |
| 1467 add_control_char_runes (pos_data *data, struct buffer *b) | |
| 1468 { | |
| 1469 if (!NILP (b->ctl_arrow)) | |
| 1470 { | |
| 1471 prop_block_dynarr *prop; | |
| 867 | 1472 Ichar orig_char = data->ch; |
| 647 | 1473 int old_cursor_type = data->cursor_type; |
| 428 | 1474 |
| 1475 /* Initialize */ | |
| 1476 prop = NULL; | |
| 1477 | |
| 1478 if (data->start_col) | |
| 1479 data->start_col--; | |
| 1480 | |
| 1481 if (!data->start_col) | |
| 1482 { | |
| 826 | 1483 if (data->byte_start_col_enabled) |
| 428 | 1484 { |
| 1485 prop_block_dynarr *retval; | |
| 1486 | |
| 1487 retval = add_hscroll_rune (data); | |
| 1488 if (retval) | |
| 1489 return retval; | |
| 1490 } | |
| 1491 else | |
| 1492 { | |
| 1493 struct glyph_block gb; | |
| 1494 struct window *w = XWINDOW (data->window); | |
| 1495 | |
| 1496 gb.extent = Qnil; | |
| 1497 gb.glyph = Vcontrol_arrow_glyph; | |
| 1498 | |
| 1499 /* We only propagate information if the glyph was partially | |
| 1500 added. */ | |
| 1501 if (add_glyph_rune (data, &gb, BEGIN_GLYPHS, 1, | |
| 1502 GLYPH_CACHEL (w, CONTROL_GLYPH_INDEX))) | |
| 1503 return ADD_FAILED; | |
| 1504 } | |
| 1505 } | |
| 1506 | |
| 1507 if (orig_char == 0177) | |
| 1508 data->ch = '?'; | |
| 1509 else | |
| 1510 data->ch = orig_char ^ 0100; | |
| 1511 data->cursor_type = IGNORE_CURSOR; | |
| 1512 | |
| 867 | 1513 if (add_ichar_rune (data)) |
| 428 | 1514 { |
| 1515 struct prop_block pb; | |
| 1516 if (!prop) | |
| 1517 prop = Dynarr_new (prop_block); | |
| 1518 | |
| 1519 pb.type = PROP_CHAR; | |
| 1520 pb.data.p_char.ch = data->ch; | |
| 1521 pb.data.p_char.cursor_type = data->cursor_type; | |
| 1522 Dynarr_add (prop, pb); | |
| 1523 } | |
| 1524 | |
| 1525 data->cursor_type = old_cursor_type; | |
| 1526 return prop; | |
| 1527 } | |
| 1528 else | |
| 1529 { | |
| 1530 return add_octal_runes (data); | |
| 1531 } | |
| 1532 } | |
| 1533 | |
| 1534 static prop_block_dynarr * | |
| 1535 add_disp_table_entry_runes_1 (pos_data *data, Lisp_Object entry) | |
| 1536 { | |
| 1537 prop_block_dynarr *prop = NULL; | |
| 1538 | |
| 1539 if (STRINGP (entry)) | |
| 1540 { | |
| 867 | 1541 prop = add_ibyte_string_runes (data, |
| 428 | 1542 XSTRING_DATA (entry), |
| 1543 XSTRING_LENGTH (entry), | |
| 793 | 1544 0, 0); |
| 428 | 1545 } |
| 1546 else if (GLYPHP (entry)) | |
| 1547 { | |
| 1548 if (data->start_col) | |
| 1549 data->start_col--; | |
| 1550 | |
| 826 | 1551 if (!data->start_col && data->byte_start_col_enabled) |
| 428 | 1552 { |
| 1553 prop = add_hscroll_rune (data); | |
| 1554 } | |
| 1555 else | |
| 1556 { | |
| 1557 struct glyph_block gb; | |
| 1558 | |
| 1559 gb.glyph = entry; | |
| 1560 gb.extent = Qnil; | |
| 1561 prop = add_glyph_rune (data, &gb, BEGIN_GLYPHS, 0, 0); | |
| 1562 } | |
| 1563 } | |
| 1564 else if (CHAR_OR_CHAR_INTP (entry)) | |
| 1565 { | |
| 1566 data->ch = XCHAR_OR_CHAR_INT (entry); | |
| 867 | 1567 prop = add_ichar_rune (data); |
| 428 | 1568 } |
| 1569 else if (CONSP (entry)) | |
| 1570 { | |
| 1571 if (EQ (XCAR (entry), Qformat) | |
| 1572 && CONSP (XCDR (entry)) | |
| 1573 && STRINGP (XCAR (XCDR (entry)))) | |
| 1574 { | |
| 1575 Lisp_Object format = XCAR (XCDR (entry)); | |
| 665 | 1576 Bytebpos len = XSTRING_LENGTH (format); |
| 867 | 1577 Ibyte *src = XSTRING_DATA (format), *end = src + len; |
| 2367 | 1578 Ibyte *result = alloca_ibytes (len); |
| 867 | 1579 Ibyte *dst = result; |
| 428 | 1580 |
| 1581 while (src < end) | |
| 1582 { | |
| 867 | 1583 Ichar c = itext_ichar (src); |
| 1584 INC_IBYTEPTR (src); | |
| 428 | 1585 if (c != '%' || src == end) |
| 867 | 1586 dst += set_itext_ichar (dst, c); |
| 428 | 1587 else |
| 1588 { | |
| 867 | 1589 c = itext_ichar (src); |
| 1590 INC_IBYTEPTR (src); | |
| 428 | 1591 switch (c) |
| 1592 { | |
| 1593 /*case 'x': | |
| 1594 dst += long_to_string_base ((char *)dst, data->ch, 16); | |
| 1595 break;*/ | |
| 1596 case '%': | |
| 867 | 1597 dst += set_itext_ichar (dst, '%'); |
| 428 | 1598 break; |
| 442 | 1599 /* #### unimplemented */ |
| 428 | 1600 } |
| 1601 } | |
| 1602 } | |
| 867 | 1603 prop = add_ibyte_string_runes (data, result, dst - result, 0, 0); |
| 428 | 1604 } |
| 1605 } | |
| 1606 | |
| 1607 /* Else blow it off because someone added a bad entry and we don't | |
| 1608 have any safe way of signaling an error. */ | |
| 1609 return prop; | |
| 1610 } | |
| 1611 | |
| 1612 /* Given a display table entry, call the appropriate functions to | |
| 1613 display each element of the entry. */ | |
| 1614 | |
| 1615 static prop_block_dynarr * | |
| 1616 add_disp_table_entry_runes (pos_data *data, Lisp_Object entry) | |
| 1617 { | |
| 1618 prop_block_dynarr *prop = NULL; | |
| 1619 if (VECTORP (entry)) | |
| 1620 { | |
| 440 | 1621 Lisp_Vector *de = XVECTOR (entry); |
| 428 | 1622 EMACS_INT len = vector_length (de); |
| 1623 int elt; | |
| 1624 | |
| 1625 for (elt = 0; elt < len; elt++) | |
| 1626 { | |
| 1627 if (NILP (vector_data (de)[elt])) | |
| 1628 continue; | |
| 1629 else | |
| 1630 prop = add_disp_table_entry_runes_1 (data, vector_data (de)[elt]); | |
| 1631 /* Else blow it off because someone added a bad entry and we | |
| 1632 don't have any safe way of signaling an error. Hey, this | |
| 1633 comment sounds familiar. */ | |
| 1634 | |
| 1635 /* #### Still need to add any remaining elements to the | |
| 4187 | 1636 propagation information. */ |
| 428 | 1637 if (prop) |
| 1638 return prop; | |
| 1639 } | |
| 1640 } | |
| 1641 else | |
| 1642 prop = add_disp_table_entry_runes_1 (data, entry); | |
| 1643 return prop; | |
| 1644 } | |
| 1645 | |
| 1646 /* Add runes which were propagated from the previous line. */ | |
| 1647 | |
| 1648 static prop_block_dynarr * | |
| 1649 add_propagation_runes (prop_block_dynarr **prop, pos_data *data) | |
| 1650 { | |
| 1651 /* #### Remember to handle start_col parameter of data when the rest of | |
| 1652 this is finished. */ | |
| 1653 /* #### Chuck -- I've redone this function a bit. It looked like the | |
| 1654 case of not all the propagation blocks being added was not handled | |
| 1655 well. */ | |
| 1656 /* #### Chuck -- I also think the double indirection of PROP is kind | |
| 1657 of bogus. A cleaner solution is just to check for | |
| 1658 Dynarr_length (prop) > 0. */ | |
| 1659 /* #### This function also doesn't even pay attention to ADD_FAILED! | |
| 1660 This is seriously fucked! Seven ####'s in 130 lines -- is that a | |
| 1661 record? */ | |
| 1662 int elt; | |
| 1663 prop_block_dynarr *add_failed; | |
| 826 | 1664 Bytebpos byte_old_cursor_charpos = data->byte_cursor_charpos; |
| 647 | 1665 int old_cursor_type = data->cursor_type; |
| 428 | 1666 |
| 1667 for (elt = 0; elt < Dynarr_length (*prop); elt++) | |
| 1668 { | |
| 1669 struct prop_block *pb = Dynarr_atp (*prop, elt); | |
| 1670 | |
| 1671 switch (pb->type) | |
| 1672 { | |
| 1673 case PROP_CHAR: | |
| 1674 data->ch = pb->data.p_char.ch; | |
| 826 | 1675 data->byte_cursor_charpos = pb->data.p_char.byte_cursor_charpos; |
| 428 | 1676 data->cursor_type = pb->data.p_char.cursor_type; |
| 867 | 1677 add_failed = add_ichar_rune (data); |
| 428 | 1678 |
| 1679 if (add_failed) | |
| 1680 goto oops_no_more_space; | |
| 1681 break; | |
| 1682 case PROP_STRING: | |
| 1683 if (pb->data.p_string.str) | |
| 1726 | 1684 xfree (pb->data.p_string.str, Ibyte *); |
| 428 | 1685 /* #### bogus bogus -- this doesn't do anything! |
| 867 | 1686 Should probably call add_ibyte_string_runes(), |
| 428 | 1687 once that function is fixed. */ |
| 1688 break; | |
| 1689 case PROP_MINIBUF_PROMPT: | |
| 1690 { | |
| 1691 face_index old_findex = data->findex; | |
| 826 | 1692 Bytebpos byte_old_charpos = data->byte_charpos; |
| 428 | 1693 |
| 1694 data->findex = DEFAULT_INDEX; | |
| 826 | 1695 data->byte_charpos = 0; |
| 428 | 1696 data->cursor_type = NO_CURSOR; |
| 1697 | |
| 1698 while (pb->data.p_string.len > 0) | |
| 1699 { | |
| 867 | 1700 data->ch = itext_ichar (pb->data.p_string.str); |
| 1701 add_failed = add_ichar_rune (data); | |
| 428 | 1702 |
| 1703 if (add_failed) | |
| 1704 { | |
| 1705 data->findex = old_findex; | |
| 826 | 1706 data->byte_charpos = byte_old_charpos; |
| 428 | 1707 goto oops_no_more_space; |
| 1708 } | |
| 1709 else | |
| 1710 { | |
| 1711 /* Complicated equivalent of ptr++, len-- */ | |
| 867 | 1712 Ibyte *oldpos = pb->data.p_string.str; |
| 1713 INC_IBYTEPTR (pb->data.p_string.str); | |
| 428 | 1714 pb->data.p_string.len -= pb->data.p_string.str - oldpos; |
| 1715 } | |
| 1716 } | |
| 1717 | |
| 1718 data->findex = old_findex; | |
| 1719 /* ##### FIXME FIXME FIXME -- Upon successful return from | |
| 826 | 1720 this function, data->byte_charpos is automatically incremented. |
| 428 | 1721 However, we don't want that to happen if we were adding |
| 1722 the minibuffer prompt. */ | |
| 1723 { | |
| 1724 struct buffer *buf = | |
| 1725 XBUFFER (WINDOW_BUFFER (XWINDOW (data->window))); | |
| 1726 /* #### Chuck fix this shit or I'm gonna scream! */ | |
| 826 | 1727 if (byte_old_charpos > BYTE_BUF_BEGV (buf)) |
| 4187 | 1728 data->byte_charpos = prev_bytebpos (buf, byte_old_charpos); |
| 1729 else | |
| 428 | 1730 /* #### is this correct? Does anyone know? |
| 1731 Does anyone care? Is this a cheesy hack or what? */ | |
| 4187 | 1732 data->byte_charpos = BYTE_BUF_BEGV (buf) - 1; |
| 428 | 1733 } |
| 1734 } | |
| 1735 break; | |
| 1736 case PROP_BLANK: | |
| 1737 { | |
| 1738 /* #### I think it's unnecessary and misleading to preserve | |
| 1739 the blank_width, as it implies that the value carries | |
| 1740 over from one rune to the next, which is wrong. */ | |
| 1741 int old_width = data->blank_width; | |
| 1742 face_index old_findex = data->findex; | |
| 1743 | |
| 1744 data->findex = pb->data.p_blank.findex; | |
| 1745 data->blank_width = pb->data.p_blank.width; | |
| 826 | 1746 data->byte_cursor_charpos = 0; |
| 428 | 1747 data->cursor_type = IGNORE_CURSOR; |
| 1748 | |
| 1749 if (data->pixpos + data->blank_width > data->max_pixpos) | |
| 1750 data->blank_width = data->max_pixpos - data->pixpos; | |
| 1751 | |
| 1752 /* We pass a bogus value of char_tab_width. It shouldn't | |
| 4187 | 1753 matter because unless something is really screwed up |
| 1754 this call won't cause that arg to be used. */ | |
| 428 | 1755 add_failed = add_blank_rune (data, XWINDOW (data->window), 0); |
| 1756 | |
| 1757 /* This can happen in the case where we have a tab which | |
| 4187 | 1758 is wider than the window. */ |
| 428 | 1759 if (data->blank_width != pb->data.p_blank.width) |
| 1760 { | |
| 1761 pb->data.p_blank.width -= data->blank_width; | |
| 1762 add_failed = ADD_FAILED; | |
| 1763 } | |
| 1764 | |
| 1765 data->findex = old_findex; | |
| 1766 data->blank_width = old_width; | |
| 1767 | |
| 1768 if (add_failed) | |
| 1769 goto oops_no_more_space; | |
| 1770 } | |
| 1771 break; | |
| 1772 default: | |
| 2500 | 1773 ABORT (); |
| 428 | 1774 } |
| 1775 } | |
| 1776 | |
| 1777 oops_no_more_space: | |
| 1778 | |
| 826 | 1779 data->byte_cursor_charpos = byte_old_cursor_charpos; |
| 428 | 1780 data->cursor_type = old_cursor_type; |
| 1781 if (elt < Dynarr_length (*prop)) | |
| 1782 { | |
| 1783 Dynarr_delete_many (*prop, 0, elt); | |
| 1784 return *prop; | |
| 1785 } | |
| 1786 else | |
| 1787 { | |
| 1788 Dynarr_free (*prop); | |
| 1789 return NULL; | |
| 1790 } | |
| 1791 } | |
| 1792 | |
| 3025 | 1793 /* Add `text' layout glyphs at position POS_TYPE that are contained to |
| 428 | 1794 the display block, but add all other types to the appropriate list |
| 1795 of the display line. They will be added later by different | |
| 1796 routines. */ | |
| 1797 | |
| 1798 static prop_block_dynarr * | |
| 1799 add_glyph_rune (pos_data *data, struct glyph_block *gb, int pos_type, | |
| 1800 int allow_cursor, struct glyph_cachel *cachel) | |
| 1801 { | |
| 1802 struct window *w = XWINDOW (data->window); | |
| 1803 | |
| 440 | 1804 /* If window faces changed, and glyph instance is text, then |
| 1805 glyph sizes might have changed too */ | |
| 1806 invalidate_glyph_geometry_maybe (gb->glyph, w); | |
| 1807 | |
| 442 | 1808 /* This makes sure the glyph is in the cachels. |
| 1809 | |
| 1810 #### We do this to make sure the glyph is in the glyph cachels, | |
| 1811 so that the dirty flag can be reset after redisplay has | |
| 1812 finished. We should do this some other way, maybe by iterating | |
| 1813 over the window cache of subwindows. */ | |
| 1814 get_glyph_cachel_index (w, gb->glyph); | |
| 1815 | |
| 428 | 1816 /* A nil extent indicates a special glyph (ex. truncator). */ |
| 1817 if (NILP (gb->extent) | |
| 1818 || (pos_type == BEGIN_GLYPHS && | |
| 1819 extent_begin_glyph_layout (XEXTENT (gb->extent)) == GL_TEXT) | |
| 1820 || (pos_type == END_GLYPHS && | |
| 442 | 1821 extent_end_glyph_layout (XEXTENT (gb->extent)) == GL_TEXT) |
| 1822 || pos_type == LEFT_GLYPHS || pos_type == RIGHT_GLYPHS) | |
| 428 | 1823 { |
| 1824 struct rune rb; | |
| 1825 int width; | |
| 1826 int xoffset = 0; | |
| 1827 int ascent, descent; | |
| 1828 Lisp_Object baseline; | |
| 1829 Lisp_Object face; | |
| 442 | 1830 Lisp_Object instance; |
| 1831 face_index findex; | |
| 819 | 1832 prop_block_dynarr *retval = 0; |
| 428 | 1833 |
| 1834 if (cachel) | |
| 1835 width = cachel->width; | |
| 1836 else | |
| 438 | 1837 width = glyph_width (gb->glyph, data->window); |
| 428 | 1838 |
| 1839 if (!width) | |
| 1840 return NULL; | |
| 1841 | |
| 1842 if (data->start_col || data->start_col_xoffset) | |
| 1843 { | |
| 1844 int glyph_char_width = width / space_width (w); | |
| 1845 | |
| 1846 /* If we still have not fully scrolled horizontally after | |
| 4187 | 1847 taking into account the width of the glyph, subtract its |
| 1848 width and return. */ | |
| 428 | 1849 if (glyph_char_width < data->start_col) |
| 1850 { | |
| 1851 data->start_col -= glyph_char_width; | |
| 1852 return NULL; | |
| 1853 } | |
| 1854 else if (glyph_char_width == data->start_col) | |
| 1855 width = 0; | |
| 1856 else | |
| 1857 { | |
| 1858 xoffset = space_width (w) * data->start_col; | |
| 1859 width -= xoffset; | |
| 1860 | |
| 1861 /* #### Can this happen? */ | |
| 1862 if (width < 0) | |
| 1863 width = 0; | |
| 1864 } | |
| 1865 | |
| 1866 data->start_col = 0; | |
| 1867 retval = add_hscroll_rune (data); | |
| 1868 | |
| 1869 /* Could be caused by the handling of the hscroll rune. */ | |
| 1870 if (retval != NULL || !width) | |
| 1871 return retval; | |
| 1872 } | |
| 1873 else | |
| 1874 xoffset = 0; | |
| 1875 | |
| 1876 if (data->pixpos + width > data->max_pixpos) | |
| 1877 { | |
| 1878 /* If this is the first object we are attempting to add to | |
| 819 | 1879 the line then we ignore the horizontal_clip threshold. |
| 1880 Otherwise we will loop until the bottom of the window | |
| 1881 continually failing to add this glyph because it is wider | |
| 1882 than the window. We could alternatively just completely | |
| 1883 ignore the glyph and proceed from there but I think that | |
| 1884 this is a better solution. | |
| 4187 | 1885 |
| 819 | 1886 This does, however, create a different problem in that we |
| 1887 can end up adding the object to every single line, never | |
| 1888 getting any further - for instance an extent with a long | |
| 1889 start-glyph that covers multitple following | |
| 1890 characters. */ | |
| 428 | 1891 if (Dynarr_length (data->db->runes) |
| 1892 && data->max_pixpos - data->pixpos < horizontal_clip) | |
| 1893 return ADD_FAILED; | |
| 819 | 1894 else { |
| 1895 struct prop_block pb; | |
| 1896 | |
| 1897 /* We need to account for the width of the end-of-line | |
| 1898 glyph if there is nothing more in the line to display, | |
| 1899 since we will not display it in this instance. It seems | |
| 1900 kind of gross doing it here, but otherwise we have to | |
| 1901 search the runes in create_text_block(). */ | |
| 1902 if (data->ch == '\n') | |
| 1903 data->max_pixpos += data->end_glyph_width; | |
| 428 | 1904 width = data->max_pixpos - data->pixpos; |
| 819 | 1905 /* Add the glyph we are displaying, but clipping, to the |
| 1906 propagation data so that we don't try and do it | |
| 4187 | 1907 again. */ |
| 819 | 1908 retval = Dynarr_new (prop_block); |
| 1909 pb.type = PROP_GLYPH; | |
| 1910 pb.data.p_glyph.glyph = gb->glyph; | |
| 1911 pb.data.p_glyph.width = width; | |
| 1912 Dynarr_add (retval, pb); | |
| 1913 } | |
| 428 | 1914 } |
| 1915 | |
| 1916 if (cachel) | |
| 1917 { | |
| 1918 ascent = cachel->ascent; | |
| 1919 descent = cachel->descent; | |
| 1920 } | |
| 1921 else | |
| 1922 { | |
| 438 | 1923 ascent = glyph_ascent (gb->glyph, data->window); |
| 1924 descent = glyph_descent (gb->glyph, data->window); | |
| 428 | 1925 } |
| 1926 | |
| 1927 baseline = glyph_baseline (gb->glyph, data->window); | |
| 1928 | |
| 819 | 1929 rb.object.dglyph.descent = 0; /* Gets reset lower down, if it is known. */ |
| 1930 | |
| 428 | 1931 if (glyph_contrib_p (gb->glyph, data->window)) |
| 1932 { | |
| 1933 /* A pixmap that has not had a baseline explicitly set. Its | |
| 1934 contribution will be determined later. */ | |
| 1935 if (NILP (baseline)) | |
| 1936 { | |
| 1937 int height = ascent + descent; | |
| 819 | 1938 data->need_baseline_computation = 1; |
| 428 | 1939 data->max_pixmap_height = max (data->max_pixmap_height, height); |
| 1940 } | |
| 1941 | |
| 1942 /* A string so determine contribution normally. */ | |
| 1943 else if (EQ (baseline, Qt)) | |
| 1944 { | |
| 1945 data->new_ascent = max (data->new_ascent, ascent); | |
| 1946 data->new_descent = max (data->new_descent, descent); | |
| 1947 } | |
| 1948 | |
| 1949 /* A pixmap with an explicitly set baseline. We determine the | |
| 1950 contribution here. */ | |
| 1951 else if (INTP (baseline)) | |
| 1952 { | |
| 1953 int height = ascent + descent; | |
| 1954 int pix_ascent, pix_descent; | |
| 1955 | |
| 1956 pix_ascent = height * XINT (baseline) / 100; | |
| 1957 pix_descent = height - pix_ascent; | |
| 1958 | |
| 1959 data->new_ascent = max (data->new_ascent, pix_ascent); | |
| 1960 data->new_descent = max (data->new_descent, pix_descent); | |
| 819 | 1961 data->max_pixmap_height = max (data->max_pixmap_height, height); |
| 4187 | 1962 |
| 819 | 1963 rb.object.dglyph.descent = pix_descent; |
| 428 | 1964 } |
| 1965 | |
| 1966 /* Otherwise something is screwed up. */ | |
| 1967 else | |
| 2500 | 1968 ABORT (); |
| 428 | 1969 } |
| 1970 | |
| 1971 face = glyph_face (gb->glyph, data->window); | |
| 1972 if (NILP (face)) | |
| 442 | 1973 findex = data->findex; |
| 428 | 1974 else |
| 442 | 1975 findex = get_builtin_face_cache_index (w, face); |
| 1976 | |
| 1977 instance = glyph_image_instance (gb->glyph, data->window, | |
| 793 | 1978 ERROR_ME_DEBUG_WARN, 1); |
| 442 | 1979 if (TEXT_IMAGE_INSTANCEP (instance)) |
| 1980 { | |
| 1981 Lisp_Object string = XIMAGE_INSTANCE_TEXT_STRING (instance); | |
| 1982 face_index orig_findex = data->findex; | |
| 826 | 1983 Bytebpos orig_charpos = data->byte_charpos; |
| 1984 Bytebpos orig_start_col_enabled = data->byte_start_col_enabled; | |
| 442 | 1985 |
| 1986 data->findex = findex; | |
| 826 | 1987 data->byte_start_col_enabled = 0; |
| 442 | 1988 if (!allow_cursor) |
| 826 | 1989 data->byte_charpos = 0; |
| 867 | 1990 add_ibyte_string_runes (data, XSTRING_DATA (string), |
| 793 | 1991 XSTRING_LENGTH (string), 0, 1); |
| 442 | 1992 data->findex = orig_findex; |
| 826 | 1993 data->byte_charpos = orig_charpos; |
| 1994 data->byte_start_col_enabled = orig_start_col_enabled; | |
| 819 | 1995 return retval; |
| 442 | 1996 } |
| 1997 | |
| 1998 rb.findex = findex; | |
| 428 | 1999 rb.xpos = data->pixpos; |
| 2000 rb.width = width; | |
| 826 | 2001 rb.charpos = 0; /* glyphs are never "at" anywhere */ |
| 2002 if (data->byte_endpos) | |
| 428 | 2003 /* #### is this necessary at all? */ |
| 665 | 2004 rb.endpos = bytebpos_to_charbpos (XBUFFER (WINDOW_BUFFER (w)), |
| 826 | 2005 data->byte_endpos); |
| 428 | 2006 else |
| 4187 | 2007 rb.endpos = 0; |
| 428 | 2008 rb.type = RUNE_DGLYPH; |
| 2009 rb.object.dglyph.glyph = gb->glyph; | |
| 2010 rb.object.dglyph.extent = gb->extent; | |
| 2011 rb.object.dglyph.xoffset = xoffset; | |
| 819 | 2012 rb.object.dglyph.ascent = ascent; |
| 2013 rb.object.dglyph.yoffset = 0; /* Until we know better, assume that it has | |
| 2014 a normal (textual) baseline. */ | |
| 428 | 2015 |
| 2016 if (allow_cursor) | |
| 2017 { | |
| 826 | 2018 rb.charpos = bytebpos_to_charbpos (XBUFFER (WINDOW_BUFFER (w)), |
| 2019 data->byte_charpos); | |
| 428 | 2020 |
| 2021 if (data->cursor_type == CURSOR_ON) | |
| 2022 { | |
| 826 | 2023 if (data->byte_charpos == data->byte_cursor_charpos) |
| 428 | 2024 { |
| 2025 rb.cursor_type = CURSOR_ON; | |
| 2026 data->cursor_x = Dynarr_length (data->db->runes); | |
| 2027 } | |
| 2028 else | |
| 2029 rb.cursor_type = CURSOR_OFF; | |
| 2030 } | |
| 2031 else if (data->cursor_type == NEXT_CURSOR) | |
| 2032 { | |
| 2033 rb.cursor_type = CURSOR_ON; | |
| 2034 data->cursor_x = Dynarr_length (data->db->runes); | |
| 2035 data->cursor_type = NO_CURSOR; | |
| 2036 } | |
| 2037 else if (data->cursor_type == IGNORE_CURSOR) | |
| 2038 rb.cursor_type = IGNORE_CURSOR; | |
| 2039 else if (data->cursor_type == NO_CURSOR) | |
| 2040 rb.cursor_type = NO_CURSOR; | |
| 2041 else | |
| 2042 rb.cursor_type = CURSOR_OFF; | |
| 2043 } | |
| 2044 else | |
| 2045 rb.cursor_type = CURSOR_OFF; | |
| 2046 | |
| 2047 Dynarr_add (data->db->runes, rb); | |
| 2048 data->pixpos += width; | |
| 2049 | |
| 819 | 2050 return retval; |
| 428 | 2051 } |
| 2052 else | |
| 2053 { | |
| 2054 if (!NILP (glyph_face (gb->glyph, data->window))) | |
| 2055 gb->findex = | |
| 2056 get_builtin_face_cache_index (w, glyph_face (gb->glyph, | |
| 2057 data->window)); | |
| 2058 else | |
| 2059 gb->findex = data->findex; | |
| 2060 | |
| 2061 if (pos_type == BEGIN_GLYPHS) | |
| 2062 { | |
| 2063 if (!data->dl->left_glyphs) | |
| 2064 data->dl->left_glyphs = Dynarr_new (glyph_block); | |
| 2065 Dynarr_add (data->dl->left_glyphs, *gb); | |
| 2066 return NULL; | |
| 2067 } | |
| 2068 else if (pos_type == END_GLYPHS) | |
| 2069 { | |
| 2070 if (!data->dl->right_glyphs) | |
| 2071 data->dl->right_glyphs = Dynarr_new (glyph_block); | |
| 2072 Dynarr_add (data->dl->right_glyphs, *gb); | |
| 2073 return NULL; | |
| 2074 } | |
| 2075 else | |
| 2500 | 2076 ABORT (); /* there are no unknown types */ |
| 428 | 2077 } |
| 2078 | |
| 819 | 2079 return NULL; |
| 428 | 2080 } |
| 2081 | |
| 2082 /* Add all glyphs at position POS_TYPE that are contained in the given | |
| 2083 data. */ | |
| 2084 | |
| 2085 static prop_block_dynarr * | |
| 2086 add_glyph_runes (pos_data *data, int pos_type) | |
| 2087 { | |
| 2088 /* #### This still needs to handle the start_col parameter. Duh, Chuck, | |
| 2089 why didn't you just modify add_glyph_rune in the first place? */ | |
| 2090 int elt; | |
| 2091 glyph_block_dynarr *glyph_arr = (pos_type == BEGIN_GLYPHS | |
| 2092 ? data->ef->begin_glyphs | |
| 2093 : data->ef->end_glyphs); | |
| 2094 prop_block_dynarr *prop; | |
| 2095 | |
| 2096 for (elt = 0; elt < Dynarr_length (glyph_arr); elt++) | |
| 2097 { | |
| 2098 prop = add_glyph_rune (data, Dynarr_atp (glyph_arr, elt), pos_type, 0, | |
| 2099 0); | |
| 2100 | |
| 2101 if (prop) | |
| 2102 { | |
| 2103 /* #### Add some propagation information. */ | |
| 2104 return prop; | |
| 2105 } | |
| 2106 } | |
| 2107 | |
| 2108 Dynarr_reset (glyph_arr); | |
| 2109 | |
| 2110 return NULL; | |
| 2111 } | |
| 2112 | |
| 2113 /* Given a position for a buffer in a window, ensure that the given | |
| 2114 display line DL accurately represents the text on a line starting | |
| 2115 at the given position. | |
| 2116 | |
| 826 | 2117 NOTE NOTE NOTE NOTE: This function works with and returns Bytebpos's. |
| 428 | 2118 You must do appropriate conversion. */ |
| 2119 | |
| 665 | 2120 static Bytebpos |
| 428 | 2121 create_text_block (struct window *w, struct display_line *dl, |
| 826 | 2122 Bytebpos byte_start_pos, prop_block_dynarr **prop, |
| 428 | 2123 int type) |
| 2124 { | |
| 2125 struct frame *f = XFRAME (w->frame); | |
| 2126 struct buffer *b = XBUFFER (w->buffer); | |
| 2127 struct device *d = XDEVICE (f->device); | |
| 2128 | |
| 2129 pos_data data; | |
| 2130 | |
| 2131 /* Don't display anything in the minibuffer if this window is not on | |
| 2132 a selected frame. We consider all other windows to be active | |
| 2133 minibuffers as it simplifies the coding. */ | |
| 2134 int active_minibuffer = (!MINI_WINDOW_P (w) || | |
| 2135 (f == device_selected_frame (d)) || | |
| 2136 is_surrogate_for_selected_frame (f)); | |
| 2137 | |
| 2138 int truncate_win = window_truncation_on (w); | |
| 2139 | |
| 2140 /* If the buffer's value of selective_display is an integer then | |
| 2141 only lines that start with less than selective_display columns of | |
| 2142 space will be displayed. If selective_display is t then all text | |
| 2143 after a ^M is invisible. */ | |
| 2144 int selective = (INTP (b->selective_display) | |
| 2145 ? XINT (b->selective_display) | |
| 434 | 2146 : (!NILP (b->selective_display) ? -1 : 0)); |
| 428 | 2147 |
| 2148 /* The variable ctl-arrow allows the user to specify what characters | |
| 2149 can actually be displayed and which octal should be used for. | |
| 2150 #### This variable should probably have some rethought done to | |
| 2151 it. | |
| 2152 | |
| 2367 | 2153 See also |
| 2154 | |
| 2155 (Info-goto-node "(internals)Future Work -- Display Tables") | |
| 2156 | |
| 2157 */ | |
| 867 | 2158 Ichar printable_min = (CHAR_OR_CHAR_INTP (b->ctl_arrow) |
| 428 | 2159 ? XCHAR_OR_CHAR_INT (b->ctl_arrow) |
| 2160 : ((EQ (b->ctl_arrow, Qt) || EQ (b->ctl_arrow, Qnil)) | |
| 2161 ? 255 : 160)); | |
| 2162 | |
| 2163 Lisp_Object face_dt, window_dt; | |
| 2164 | |
| 2165 /* The text display block for this display line. */ | |
| 2166 struct display_block *db = get_display_block_from_line (dl, TEXT); | |
| 2167 | |
| 2168 /* The first time through the main loop we need to force the glyph | |
| 2169 data to be updated. */ | |
| 2170 int initial = 1; | |
| 2171 | |
| 2172 /* Apparently the new extent_fragment_update returns an end position | |
| 2173 equal to the position passed in if there are no more runs to be | |
| 2174 displayed. */ | |
| 2175 int no_more_frags = 0; | |
| 2176 | |
| 2177 Lisp_Object synch_minibuffers_value = | |
| 2178 symbol_value_in_buffer (Qsynchronize_minibuffers, w->buffer); | |
| 2179 | |
| 2180 dl->used_prop_data = 0; | |
| 2181 dl->num_chars = 0; | |
| 442 | 2182 dl->line_continuation = 0; |
| 428 | 2183 |
| 2184 xzero (data); | |
| 2185 data.ef = extent_fragment_new (w->buffer, f); | |
| 2186 | |
| 2187 /* These values are used by all of the rune addition routines. We add | |
| 2188 them to this structure for ease of passing. */ | |
| 2189 data.d = d; | |
| 793 | 2190 data.window = wrap_window (w); |
| 428 | 2191 data.string = Qnil; |
| 2192 data.db = db; | |
| 2193 data.dl = dl; | |
| 2194 | |
| 826 | 2195 data.byte_charpos = byte_start_pos; |
| 428 | 2196 data.pixpos = dl->bounds.left_in; |
| 2197 data.last_charset = Qunbound; | |
| 2198 data.last_findex = DEFAULT_INDEX; | |
| 2199 data.result_str = Qnil; | |
| 2200 | |
| 2201 /* Set the right boundary adjusting it to take into account any end | |
| 2202 glyph. Save the width of the end glyph for later use. */ | |
| 2203 data.max_pixpos = dl->bounds.right_in; | |
| 2204 if (truncate_win) | |
| 819 | 2205 data.end_glyph_width = GLYPH_CACHEL_WIDTH (w, TRUN_GLYPH_INDEX); |
| 428 | 2206 else |
| 819 | 2207 data.end_glyph_width = GLYPH_CACHEL_WIDTH (w, CONT_GLYPH_INDEX); |
| 2208 data.max_pixpos -= data.end_glyph_width; | |
| 428 | 2209 |
| 2210 if (cursor_in_echo_area && MINI_WINDOW_P (w) && echo_area_active (f)) | |
| 2211 { | |
| 826 | 2212 data.byte_cursor_charpos = BYTE_BUF_ZV (b); |
| 428 | 2213 data.cursor_type = CURSOR_ON; |
| 2214 } | |
| 2215 else if (MINI_WINDOW_P (w) && !active_minibuffer) | |
| 2216 data.cursor_type = NO_CURSOR; | |
| 2217 else if (w == XWINDOW (FRAME_SELECTED_WINDOW (f)) && | |
| 2218 EQ(DEVICE_CONSOLE(d), Vselected_console) && | |
| 2219 d == XDEVICE(CONSOLE_SELECTED_DEVICE(XCONSOLE(DEVICE_CONSOLE(d))))&& | |
| 2220 f == XFRAME(DEVICE_SELECTED_FRAME(d))) | |
| 2221 { | |
| 826 | 2222 data.byte_cursor_charpos = BYTE_BUF_PT (b); |
| 428 | 2223 data.cursor_type = CURSOR_ON; |
| 2224 } | |
| 2225 else if (w == XWINDOW (FRAME_SELECTED_WINDOW (f))) | |
| 2226 { | |
| 826 | 2227 data.byte_cursor_charpos = byte_marker_position (w->pointm[type]); |
| 428 | 2228 data.cursor_type = CURSOR_ON; |
| 2229 } | |
| 2230 else | |
| 2231 data.cursor_type = NO_CURSOR; | |
| 2232 data.cursor_x = -1; | |
| 2233 | |
| 2234 data.start_col = w->hscroll; | |
| 2235 data.start_col_xoffset = w->left_xoffset; | |
| 826 | 2236 data.byte_start_col_enabled = (w->hscroll ? byte_start_pos : 0); |
| 428 | 2237 data.hscroll_glyph_width_adjust = 0; |
| 2238 | |
| 2239 /* We regenerate the line from the very beginning. */ | |
| 2240 Dynarr_reset (db->runes); | |
| 2241 | |
| 2242 /* Why is this less than or equal and not just less than? If the | |
| 2243 starting position is already equal to the maximum we can't add | |
| 2244 anything else, right? Wrong. We might still have a newline to | |
| 2245 add. A newline can use the room allocated for an end glyph since | |
| 2246 if we add it we know we aren't going to be adding any end | |
| 2247 glyph. */ | |
| 2248 | |
| 2249 /* #### Chuck -- I think this condition should be while (1). | |
| 2250 Otherwise if (e.g.) there is one begin-glyph and one end-glyph | |
| 2251 and the begin-glyph ends exactly at the end of the window, the | |
| 2252 end-glyph and text might not be displayed. while (1) ensures | |
| 2253 that the loop terminates only when either (a) there is | |
| 2254 propagation data or (b) the end-of-line or end-of-buffer is hit. | |
| 2255 | |
| 2256 #### Also I think you need to ensure that the operation | |
| 2257 "add begin glyphs; add end glyphs; add text" is atomic and | |
| 2258 can't get interrupted in the middle. If you run off the end | |
| 2259 of the line during that operation, then you keep accumulating | |
| 2260 propagation data until you're done. Otherwise, if the (e.g.) | |
| 2261 there's a begin glyph at a particular position and attempting | |
| 2262 to display that glyph results in window-end being hit and | |
| 2263 propagation data being generated, then the character at that | |
| 2264 position won't be displayed. | |
| 2265 | |
| 2266 #### See also the comment after the end of this loop, below. | |
| 2267 */ | |
| 2268 while (data.pixpos <= data.max_pixpos | |
| 2269 && (active_minibuffer || !NILP (synch_minibuffers_value))) | |
| 2270 { | |
| 2271 /* #### This check probably should not be necessary. */ | |
| 826 | 2272 if (data.byte_charpos > BYTE_BUF_ZV (b)) |
| 428 | 2273 { |
| 2274 /* #### urk! More of this lossage! */ | |
| 826 | 2275 data.byte_charpos--; |
| 428 | 2276 goto done; |
| 2277 } | |
| 2278 | |
| 2279 /* If selective display was an integer and we aren't working on | |
| 4187 | 2280 a continuation line then find the next line we are actually |
| 2281 supposed to display. */ | |
| 428 | 2282 if (selective > 0 |
| 826 | 2283 && (data.byte_charpos == BYTE_BUF_BEGV (b) |
| 2284 || BUF_FETCH_CHAR (b, prev_bytebpos (b, data.byte_charpos)) == '\n')) | |
| 2285 { | |
| 2286 while (byte_spaces_at_point (b, data.byte_charpos) >= selective) | |
| 428 | 2287 { |
| 826 | 2288 data.byte_charpos = |
| 2289 byte_find_next_newline_no_quit (b, data.byte_charpos, 1); | |
| 2290 if (data.byte_charpos >= BYTE_BUF_ZV (b)) | |
| 428 | 2291 { |
| 826 | 2292 data.byte_charpos = BYTE_BUF_ZV (b); |
| 428 | 2293 goto done; |
| 2294 } | |
| 2295 } | |
| 2296 } | |
| 2297 | |
| 2298 /* Check for face changes. */ | |
| 826 | 2299 if (initial || (!no_more_frags && data.byte_charpos == data.ef->end)) |
| 428 | 2300 { |
| 819 | 2301 Lisp_Object last_glyph = Qnil; |
| 2302 | |
| 2303 /* Deal with glyphs that we have already displayed. The | |
| 2304 theory is that if we end up with a PROP_GLYPH in the | |
| 2305 propagation data then we are clipping the glyph and there | |
| 2306 can be no propagation data before that point. The theory | |
| 2307 works because we always recalculate the extent-fragments | |
| 2308 for propagated data, we never actually propagate the | |
| 2309 fragments that still need to be displayed. */ | |
| 4187 | 2310 if (*prop && Dynarr_atp (*prop, 0)->type == PROP_GLYPH) |
| 819 | 2311 { |
| 2312 last_glyph = Dynarr_atp (*prop, 0)->data.p_glyph.glyph; | |
| 2313 Dynarr_free (*prop); | |
| 2314 *prop = 0; | |
| 2315 } | |
| 428 | 2316 /* Now compute the face and begin/end-glyph information. */ |
| 2317 data.findex = | |
| 665 | 2318 /* Remember that the extent-fragment routines deal in Bytebpos's. */ |
| 826 | 2319 extent_fragment_update (w, data.ef, data.byte_charpos, last_glyph); |
| 428 | 2320 |
| 2321 get_display_tables (w, data.findex, &face_dt, &window_dt); | |
| 2322 | |
| 826 | 2323 if (data.byte_charpos == data.ef->end) |
| 428 | 2324 no_more_frags = 1; |
| 2325 } | |
| 2326 initial = 0; | |
| 2327 | |
| 2328 /* Determine what is next to be displayed. We first handle any | |
| 4187 | 2329 glyphs returned by glyphs_at_charbpos. If there are no glyphs to |
| 2330 display then we determine what to do based on the character at the | |
| 2331 current buffer position. */ | |
| 428 | 2332 |
| 2333 /* If the current position is covered by an invisible extent, do | |
| 4187 | 2334 nothing (except maybe add some ellipses). |
| 428 | 2335 |
| 2336 #### The behavior of begin and end-glyphs at the edge of an | |
| 2337 invisible extent should be investigated further. This is | |
| 2338 fairly low priority though. */ | |
| 2339 if (data.ef->invisible) | |
| 2340 { | |
| 2341 /* #### Chuck, perhaps you could look at this code? I don't | |
| 2342 really know what I'm doing. */ | |
| 2343 if (*prop) | |
| 2344 { | |
| 2345 Dynarr_free (*prop); | |
| 2346 *prop = 0; | |
| 2347 } | |
| 2348 | |
| 2349 /* The extent fragment code only sets this when we should | |
| 2350 really display the ellipses. It makes sure the ellipses | |
| 2351 don't get displayed more than once in a row. */ | |
| 2352 if (data.ef->invisible_ellipses) | |
| 2353 { | |
| 2354 struct glyph_block gb; | |
| 2355 | |
| 2356 data.ef->invisible_ellipses_already_displayed = 1; | |
| 2357 data.ef->invisible_ellipses = 0; | |
| 2358 gb.extent = Qnil; | |
| 2359 gb.glyph = Vinvisible_text_glyph; | |
| 2360 *prop = add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0, | |
| 2361 GLYPH_CACHEL (w, INVIS_GLYPH_INDEX)); | |
| 2362 /* Perhaps they shouldn't propagate if the very next thing | |
| 2363 is to display a newline (for compatibility with | |
| 2364 selective-display-ellipses)? Maybe that's too | |
| 2365 abstruse. */ | |
| 2366 if (*prop) | |
| 2367 goto done; | |
| 2368 } | |
| 2369 | |
| 2370 /* If point is in an invisible region we place it on the | |
| 4187 | 2371 next visible character. */ |
| 428 | 2372 if (data.cursor_type == CURSOR_ON |
| 826 | 2373 && data.byte_charpos == data.byte_cursor_charpos) |
| 428 | 2374 { |
| 2375 data.cursor_type = NEXT_CURSOR; | |
| 2376 } | |
| 2377 | |
| 2378 /* #### What if we we're dealing with a display table? */ | |
| 2379 if (data.start_col) | |
| 2380 data.start_col--; | |
| 2381 | |
| 826 | 2382 if (data.byte_charpos == BYTE_BUF_ZV (b)) |
| 428 | 2383 goto done; |
| 2384 else | |
| 826 | 2385 INC_BYTEBPOS (b, data.byte_charpos); |
| 428 | 2386 } |
| 2387 | |
| 2388 /* If there is propagation data, then it represents the current | |
| 819 | 2389 buffer position being displayed. Add them and advance the |
| 2390 position counter. This might also add the minibuffer | |
| 2391 prompt. */ | |
| 428 | 2392 else if (*prop) |
| 2393 { | |
| 2394 dl->used_prop_data = 1; | |
| 2395 *prop = add_propagation_runes (prop, &data); | |
| 2396 | |
| 2397 if (*prop) | |
| 2398 goto done; /* gee, a really narrow window */ | |
| 826 | 2399 else if (data.byte_charpos == BYTE_BUF_ZV (b)) |
| 428 | 2400 goto done; |
| 826 | 2401 else if (data.byte_charpos < BYTE_BUF_BEGV (b)) |
| 428 | 2402 /* #### urk urk urk! Aborts are not very fun! Fix this please! */ |
| 826 | 2403 data.byte_charpos = BYTE_BUF_BEGV (b); |
| 428 | 2404 else |
| 826 | 2405 INC_BYTEBPOS (b, data.byte_charpos); |
| 428 | 2406 } |
| 2407 | |
| 2408 /* If there are end glyphs, add them to the line. These are | |
| 2409 the end glyphs for the previous run of text. We add them | |
| 2410 here rather than doing them at the end of handling the | |
| 2411 previous run so that glyphs at the beginning and end of | |
| 2412 a line are handled correctly. */ | |
| 819 | 2413 else if (Dynarr_length (data.ef->end_glyphs) > 0 |
| 2414 || Dynarr_length (data.ef->begin_glyphs) > 0) | |
| 2415 { | |
| 2416 glyph_block_dynarr* tmpglyphs = 0; | |
| 2417 /* #### I think this is safe, but could be wrong. */ | |
| 826 | 2418 data.ch = BYTE_BUF_FETCH_CHAR (b, data.byte_charpos); |
| 819 | 2419 |
| 4187 | 2420 if (Dynarr_length (data.ef->end_glyphs) > 0) |
| 819 | 2421 { |
| 2422 *prop = add_glyph_runes (&data, END_GLYPHS); | |
| 2423 tmpglyphs = data.ef->end_glyphs; | |
| 2424 } | |
| 2425 | |
| 2426 /* If there are begin glyphs, add them to the line. */ | |
| 4187 | 2427 if (!*prop && Dynarr_length (data.ef->begin_glyphs) > 0) |
| 819 | 2428 { |
| 2429 *prop = add_glyph_runes (&data, BEGIN_GLYPHS); | |
| 2430 tmpglyphs = data.ef->begin_glyphs; | |
| 2431 } | |
| 2432 | |
| 4187 | 2433 if (*prop) |
| 819 | 2434 { |
| 2435 /* If we just clipped a glyph and we are at the end of a | |
| 2436 line and there are more glyphs to display then do | |
| 2437 appropriate processing to not get a continuation | |
| 2438 glyph. */ | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
2439 if (*prop != ADD_FAILED |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
2440 && Dynarr_begin (*prop)->type == PROP_GLYPH |
| 819 | 2441 && data.ch == '\n') |
| 4187 | 2442 { |
| 819 | 2443 /* If there are no more glyphs then do the normal |
| 4187 | 2444 processing. |
| 819 | 2445 |
| 2446 #### This doesn't actually work if the same glyph is | |
| 2447 present more than once in the block. To solve | |
| 2448 this we would have to carry the index around | |
| 2449 which might be problematic since the fragment is | |
| 2450 recalculated for each line. */ | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
2451 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
|
2452 Dynarr_begin (*prop)->data.p_glyph.glyph)) |
| 819 | 2453 { |
| 2454 Dynarr_free (*prop); | |
| 2455 *prop = 0; | |
| 2456 } | |
| 2457 else { | |
| 2458 data.blank_width = DEVMETH (d, eol_cursor_width, ()); | |
| 867 | 2459 add_ichar_rune (&data); /* discard prop data. */ |
| 819 | 2460 goto done; |
| 2461 } | |
| 2462 } | |
| 2463 else | |
| 2464 goto done; | |
| 2465 } | |
| 428 | 2466 } |
| 2467 | |
| 2468 /* If at end-of-buffer, we've already processed begin and | |
| 2469 end-glyphs at this point and there's no text to process, | |
| 2470 so we're done. */ | |
| 826 | 2471 else if (data.byte_charpos == BYTE_BUF_ZV (b)) |
| 428 | 2472 goto done; |
| 2473 | |
| 2474 else | |
| 2475 { | |
| 2476 Lisp_Object entry = Qnil; | |
| 2477 /* Get the character at the current buffer position. */ | |
| 826 | 2478 data.ch = BYTE_BUF_FETCH_CHAR (b, data.byte_charpos); |
| 428 | 2479 if (!NILP (face_dt) || !NILP (window_dt)) |
| 2480 entry = display_table_entry (data.ch, face_dt, window_dt); | |
| 2481 | |
| 2482 /* If there is a display table entry for it, hand it off to | |
| 4187 | 2483 add_disp_table_entry_runes and let it worry about it. */ |
| 428 | 2484 if (!NILP (entry) && !EQ (entry, make_char (data.ch))) |
| 2485 { | |
| 2486 *prop = add_disp_table_entry_runes (&data, entry); | |
| 2487 | |
| 2488 if (*prop) | |
| 2489 goto done; | |
| 2490 } | |
| 2491 | |
| 2492 /* Check if we have hit a newline character. If so, add a marker | |
| 4187 | 2493 to the line and end this loop. */ |
| 428 | 2494 else if (data.ch == '\n') |
| 2495 { | |
| 2496 /* We aren't going to be adding an end glyph so give its | |
| 4187 | 2497 space back in order to make sure that the cursor can |
| 2498 fit. */ | |
| 819 | 2499 data.max_pixpos += data.end_glyph_width; |
| 428 | 2500 |
| 2501 if (selective > 0 | |
| 826 | 2502 && (byte_spaces_at_point |
| 2503 (b, next_bytebpos (b, data.byte_charpos)) | |
| 428 | 2504 >= selective)) |
| 2505 { | |
| 2506 if (!NILP (b->selective_display_ellipses)) | |
| 2507 { | |
| 2508 struct glyph_block gb; | |
| 2509 | |
| 2510 gb.extent = Qnil; | |
| 2511 gb.glyph = Vinvisible_text_glyph; | |
| 2512 add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0, | |
| 2513 GLYPH_CACHEL (w, INVIS_GLYPH_INDEX)); | |
| 2514 } | |
| 2515 else | |
| 2516 { | |
| 2517 /* Cheesy, cheesy, cheesy. We mark the end of the | |
| 2518 line with a special "character rune" whose width | |
| 2519 is the EOL cursor width and whose character is | |
| 2520 the non-printing character '\n'. */ | |
| 2521 data.blank_width = DEVMETH (d, eol_cursor_width, ()); | |
| 867 | 2522 *prop = add_ichar_rune (&data); |
| 428 | 2523 } |
| 2524 | |
| 826 | 2525 /* We need to set data.byte_charpos to the start of the |
| 4187 | 2526 next visible region in order to make this line |
| 2527 appear to contain all of the invisible area. | |
| 2528 Otherwise, the line cache won't work | |
| 2529 correctly. */ | |
| 826 | 2530 INC_BYTEBPOS (b, data.byte_charpos); |
| 2531 while (byte_spaces_at_point (b, data.byte_charpos) >= selective) | |
| 428 | 2532 { |
| 826 | 2533 data.byte_charpos = |
| 2534 byte_find_next_newline_no_quit (b, data.byte_charpos, 1); | |
| 2535 if (data.byte_charpos >= BYTE_BUF_ZV (b)) | |
| 428 | 2536 { |
| 826 | 2537 data.byte_charpos = BYTE_BUF_ZV (b); |
| 428 | 2538 break; |
| 2539 } | |
| 2540 } | |
| 826 | 2541 if (BYTE_BUF_FETCH_CHAR |
| 2542 (b, prev_bytebpos (b, data.byte_charpos)) == '\n') | |
| 2543 DEC_BYTEBPOS (b, data.byte_charpos); | |
| 428 | 2544 } |
| 2545 else | |
| 2546 { | |
| 2547 data.blank_width = DEVMETH (d, eol_cursor_width, ()); | |
| 867 | 2548 *prop = add_ichar_rune (&data); |
| 428 | 2549 } |
| 2550 | |
| 2551 goto done; | |
| 2552 } | |
| 2553 | |
| 2554 /* If the current character is ^M, and selective display is | |
| 4187 | 2555 enabled, then add the invisible-text-glyph if |
| 2556 selective-display-ellipses is set. In any case, this | |
| 2557 line is done. */ | |
| 428 | 2558 else if (data.ch == (('M' & 037)) && selective == -1) |
| 2559 { | |
| 826 | 2560 Bytebpos byte_next_charpos; |
| 428 | 2561 |
| 2562 /* Find the buffer position at the end of the line. */ | |
| 826 | 2563 byte_next_charpos = |
| 2564 byte_find_next_newline_no_quit (b, data.byte_charpos, 1); | |
| 2565 if (BYTE_BUF_FETCH_CHAR (b, prev_bytebpos (b, byte_next_charpos)) | |
| 428 | 2566 == '\n') |
| 826 | 2567 DEC_BYTEBPOS (b, byte_next_charpos); |
| 428 | 2568 |
| 2569 /* If the cursor is somewhere in the elided text make | |
| 4187 | 2570 sure that the cursor gets drawn appropriately. */ |
| 428 | 2571 if (data.cursor_type == CURSOR_ON |
| 826 | 2572 && (data.byte_cursor_charpos >= data.byte_charpos && |
| 2573 data.byte_cursor_charpos < byte_next_charpos)) | |
| 428 | 2574 { |
| 2575 data.cursor_type = NEXT_CURSOR; | |
| 2576 } | |
| 2577 | |
| 2578 /* We won't be adding a truncation or continuation glyph | |
| 4187 | 2579 so give up the room allocated for them. */ |
| 819 | 2580 data.max_pixpos += data.end_glyph_width; |
| 428 | 2581 |
| 2582 if (!NILP (b->selective_display_ellipses)) | |
| 2583 { | |
| 2584 /* We don't propagate anything from the invisible | |
| 4187 | 2585 text glyph if it fails to fit. This is |
| 2586 intentional. */ | |
| 428 | 2587 struct glyph_block gb; |
| 2588 | |
| 2589 gb.extent = Qnil; | |
| 2590 gb.glyph = Vinvisible_text_glyph; | |
| 2591 add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 1, | |
| 2592 GLYPH_CACHEL (w, INVIS_GLYPH_INDEX)); | |
| 2593 } | |
| 2594 | |
| 2595 /* Set the buffer position to the end of the line. We | |
| 4187 | 2596 need to do this before potentially adding a newline |
| 2597 so that the cursor flag will get set correctly (if | |
| 2598 needed). */ | |
| 826 | 2599 data.byte_charpos = byte_next_charpos; |
| 428 | 2600 |
| 2601 if (NILP (b->selective_display_ellipses) | |
| 826 | 2602 || data.byte_cursor_charpos == byte_next_charpos) |
| 428 | 2603 { |
| 2604 /* We have to at least add a newline character so | |
| 4187 | 2605 that the cursor shows up properly. */ |
| 428 | 2606 data.ch = '\n'; |
| 2607 data.blank_width = DEVMETH (d, eol_cursor_width, ()); | |
| 2608 data.findex = DEFAULT_INDEX; | |
| 2609 data.start_col = 0; | |
| 2610 data.start_col_xoffset = 0; | |
| 826 | 2611 data.byte_start_col_enabled = 0; |
| 428 | 2612 |
| 867 | 2613 add_ichar_rune (&data); |
| 428 | 2614 } |
| 2615 | |
| 2616 /* This had better be a newline but doing it this way | |
| 4187 | 2617 we'll see obvious incorrect results if it isn't. No |
| 2618 need to abort here. */ | |
| 826 | 2619 data.ch = BYTE_BUF_FETCH_CHAR (b, data.byte_charpos); |
| 428 | 2620 |
| 2621 goto done; | |
| 2622 } | |
| 2623 | |
| 2624 /* If the current character is considered to be printable, then | |
| 4187 | 2625 just add it. */ |
| 428 | 2626 else if (data.ch >= printable_min) |
| 2627 { | |
| 867 | 2628 *prop = add_ichar_rune (&data); |
| 428 | 2629 if (*prop) |
| 2630 goto done; | |
| 2631 } | |
| 2632 | |
| 2633 /* If the current character is a tab, determine the next tab | |
| 4187 | 2634 starting position and add a blank rune which extends from the |
| 2635 current pixel position to that starting position. */ | |
| 428 | 2636 else if (data.ch == '\t') |
| 2637 { | |
| 2638 int tab_start_pixpos = data.pixpos; | |
| 2639 int next_tab_start; | |
| 2640 int char_tab_width; | |
| 2641 int prop_width = 0; | |
| 2642 | |
| 2643 if (data.start_col > 1) | |
| 434 | 2644 tab_start_pixpos -= (space_width (w) * (data.start_col - 1)) |
| 428 | 2645 + data.start_col_xoffset; |
| 2646 | |
| 2647 next_tab_start = | |
| 2648 next_tab_position (w, tab_start_pixpos, | |
| 2649 dl->bounds.left_in + | |
| 2650 data.hscroll_glyph_width_adjust); | |
| 2651 if (next_tab_start > data.max_pixpos) | |
| 2652 { | |
| 2653 prop_width = next_tab_start - data.max_pixpos; | |
| 2654 next_tab_start = data.max_pixpos; | |
| 2655 } | |
| 2656 data.blank_width = next_tab_start - data.pixpos; | |
| 2657 char_tab_width = | |
| 2658 (next_tab_start - tab_start_pixpos) / space_width (w); | |
| 2659 | |
| 2660 *prop = add_blank_rune (&data, w, char_tab_width); | |
| 2661 | |
| 2662 /* add_blank_rune is only supposed to be called with | |
| 4187 | 2663 sizes guaranteed to fit in the available space. */ |
| 428 | 2664 assert (!(*prop)); |
| 2665 | |
| 2666 if (prop_width) | |
| 2667 { | |
| 2668 struct prop_block pb; | |
| 2669 *prop = Dynarr_new (prop_block); | |
| 2670 | |
| 2671 pb.type = PROP_BLANK; | |
| 2672 pb.data.p_blank.width = prop_width; | |
| 2673 pb.data.p_blank.findex = data.findex; | |
| 2674 Dynarr_add (*prop, pb); | |
| 2675 | |
| 2676 goto done; | |
| 2677 } | |
| 2678 } | |
| 2679 | |
| 2680 /* If character is a control character, pass it off to | |
| 4187 | 2681 add_control_char_runes. |
| 428 | 2682 |
| 2683 The is_*() routines have undefined results on | |
| 2684 arguments outside of the range [-1, 255]. (This | |
| 2685 often bites people who carelessly use `char' instead | |
| 2686 of `unsigned char'.) | |
| 2687 */ | |
| 867 | 2688 else if (data.ch < 0x100 && iscntrl ((Ibyte) data.ch)) |
| 428 | 2689 { |
| 2690 *prop = add_control_char_runes (&data, b); | |
| 2691 | |
| 2692 if (*prop) | |
| 2693 goto done; | |
| 2694 } | |
| 2695 | |
| 2696 /* If the character is above the ASCII range and we have not | |
| 4187 | 2697 already handled it, then print it as an octal number. */ |
| 428 | 2698 else if (data.ch >= 0200) |
| 2699 { | |
| 2700 *prop = add_octal_runes (&data); | |
| 2701 | |
| 2702 if (*prop) | |
| 2703 goto done; | |
| 2704 } | |
| 2705 | |
| 2706 /* Assume the current character is considered to be printable, | |
| 4187 | 2707 then just add it. */ |
| 428 | 2708 else |
| 2709 { | |
| 867 | 2710 *prop = add_ichar_rune (&data); |
| 428 | 2711 if (*prop) |
| 2712 goto done; | |
| 2713 } | |
| 2714 | |
| 826 | 2715 INC_BYTEBPOS (b, data.byte_charpos); |
| 428 | 2716 } |
| 2717 } | |
| 2718 | |
| 2719 done: | |
| 2720 | |
| 2721 /* Determine the starting point of the next line if we did not hit the | |
| 2722 end of the buffer. */ | |
| 826 | 2723 if (data.byte_charpos < BYTE_BUF_ZV (b) |
| 428 | 2724 && (active_minibuffer || !NILP (synch_minibuffers_value))) |
| 2725 { | |
| 2726 /* #### This check is not correct. If the line terminated | |
| 2727 due to a begin-glyph or end-glyph hitting window-end, then | |
| 826 | 2728 data.ch will not point to the character at data.byte_charpos. If |
| 428 | 2729 you make the two changes mentioned at the top of this loop, |
| 2730 you should be able to say '(if (*prop))'. That should also | |
| 826 | 2731 make it possible to eliminate the data.byte_charpos < BYTE_BUF_ZV (b) |
| 428 | 2732 check. */ |
| 2733 | |
| 2734 /* The common case is that the line ended because we hit a newline. | |
| 4187 | 2735 In that case, the next character is just the next buffer |
| 2736 position. */ | |
| 428 | 2737 if (data.ch == '\n') |
| 2738 { | |
| 2739 /* If data.start_col_enabled is still true, then the window is | |
| 4187 | 2740 scrolled far enough so that nothing on this line is visible. |
| 2741 We need to stick a truncation glyph at the beginning of the | |
| 2742 line in that case unless the line is completely blank. */ | |
| 826 | 2743 if (data.byte_start_col_enabled) |
| 428 | 2744 { |
| 2745 if (data.cursor_type == CURSOR_ON) | |
| 2746 { | |
| 826 | 2747 if (data.byte_cursor_charpos >= byte_start_pos |
| 2748 && data.byte_cursor_charpos <= data.byte_charpos) | |
| 2749 data.byte_cursor_charpos = data.byte_charpos; | |
| 428 | 2750 } |
| 2751 data.findex = DEFAULT_INDEX; | |
| 2752 data.start_col = 0; | |
| 826 | 2753 data.byte_start_col_enabled = 0; |
| 2754 | |
| 2755 if (data.byte_charpos != byte_start_pos) | |
| 428 | 2756 { |
| 2757 struct glyph_block gb; | |
| 2758 | |
| 2759 gb.extent = Qnil; | |
| 2760 gb.glyph = Vhscroll_glyph; | |
| 2761 add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0, | |
| 2762 GLYPH_CACHEL (w, HSCROLL_GLYPH_INDEX)); | |
| 2763 } | |
| 2764 else | |
| 2765 { | |
| 2766 /* This duplicates code down below to add a newline to | |
| 4187 | 2767 the end of an otherwise empty line.*/ |
| 428 | 2768 data.ch = '\n'; |
| 2769 data.blank_width = DEVMETH (d, eol_cursor_width, ()); | |
| 2770 | |
| 867 | 2771 add_ichar_rune (&data); |
| 428 | 2772 } |
| 2773 } | |
| 2774 | |
| 826 | 2775 INC_BYTEBPOS (b, data.byte_charpos); |
| 428 | 2776 } |
| 2777 | |
| 2778 /* Otherwise we have a buffer line which cannot fit on one display | |
| 4187 | 2779 line. */ |
| 428 | 2780 else |
| 2781 { | |
| 2782 struct glyph_block gb; | |
| 2783 struct glyph_cachel *cachel; | |
| 2784 | |
| 2785 /* If the line is to be truncated then we actually have to look | |
| 4187 | 2786 for the next newline. We also add the end-of-line glyph which |
| 2787 we know will fit because we adjusted the right border before | |
| 2788 we starting laying out the line. */ | |
| 819 | 2789 data.max_pixpos += data.end_glyph_width; |
| 428 | 2790 data.findex = DEFAULT_INDEX; |
| 2791 gb.extent = Qnil; | |
| 2792 | |
| 2793 if (truncate_win) | |
| 2794 { | |
| 826 | 2795 Bytebpos byte_pos; |
| 428 | 2796 |
| 2797 /* Now find the start of the next line. */ | |
| 826 | 2798 byte_pos = byte_find_next_newline_no_quit (b, data.byte_charpos, 1); |
| 428 | 2799 |
| 2800 /* If the cursor is past the truncation line then we | |
| 4187 | 2801 make it appear on the truncation glyph. If we've hit |
| 2802 the end of the buffer then we also make the cursor | |
| 2803 appear unless eob is immediately preceded by a | |
| 2804 newline. In that case the cursor should actually | |
| 2805 appear on the next line. */ | |
| 428 | 2806 if (data.cursor_type == CURSOR_ON |
| 826 | 2807 && data.byte_cursor_charpos >= data.byte_charpos |
| 2808 && (data.byte_cursor_charpos < byte_pos || | |
| 2809 (byte_pos == BYTE_BUF_ZV (b) | |
| 2810 && (byte_pos == BYTE_BUF_BEGV (b) | |
| 2811 || (BYTE_BUF_FETCH_CHAR (b, prev_bytebpos (b, byte_pos)) | |
| 428 | 2812 != '\n'))))) |
| 826 | 2813 data.byte_cursor_charpos = byte_pos; |
| 428 | 2814 else |
| 2815 data.cursor_type = NO_CURSOR; | |
| 2816 | |
| 826 | 2817 data.byte_charpos = byte_pos; |
| 428 | 2818 gb.glyph = Vtruncation_glyph; |
| 2819 cachel = GLYPH_CACHEL (w, TRUN_GLYPH_INDEX); | |
| 2820 } | |
| 2821 else | |
| 2822 { | |
| 2823 /* The cursor can never be on the continuation glyph. */ | |
| 2824 data.cursor_type = NO_CURSOR; | |
| 2825 | |
| 826 | 2826 /* data.byte_charpos is already at the start of the next line. */ |
| 428 | 2827 |
| 442 | 2828 dl->line_continuation = 1; |
| 428 | 2829 gb.glyph = Vcontinuation_glyph; |
| 2830 cachel = GLYPH_CACHEL (w, CONT_GLYPH_INDEX); | |
| 2831 } | |
| 2832 | |
| 442 | 2833 add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0, cachel); |
| 428 | 2834 |
| 826 | 2835 if (truncate_win && data.byte_charpos == BYTE_BUF_ZV (b) |
| 2836 && BYTE_BUF_FETCH_CHAR (b, prev_bytebpos (b, BYTE_BUF_ZV (b))) != '\n') | |
| 428 | 2837 /* #### Damn this losing shit. */ |
| 826 | 2838 data.byte_charpos++; |
| 428 | 2839 } |
| 2840 } | |
| 2841 else if ((active_minibuffer || !NILP (synch_minibuffers_value)) | |
| 826 | 2842 && (!echo_area_active (f) || data.byte_charpos == BYTE_BUF_ZV (b))) |
| 428 | 2843 { |
| 2844 /* We need to add a marker to the end of the line since there is no | |
| 4187 | 2845 newline character in order for the cursor to get drawn. We label |
| 2846 it as a newline so that it gets handled correctly by the | |
| 2847 whitespace routines below. */ | |
| 428 | 2848 |
| 2849 data.ch = '\n'; | |
| 2850 data.blank_width = DEVMETH (d, eol_cursor_width, ()); | |
| 2851 data.findex = DEFAULT_INDEX; | |
| 2852 data.start_col = 0; | |
| 2853 data.start_col_xoffset = 0; | |
| 826 | 2854 data.byte_start_col_enabled = 0; |
| 428 | 2855 |
| 2856 data.max_pixpos += data.blank_width; | |
| 867 | 2857 add_ichar_rune (&data); |
| 428 | 2858 data.max_pixpos -= data.blank_width; |
| 2859 | |
| 2860 /* #### urk! Chuck, this shit is bad news. Going around | |
| 2861 manipulating invalid positions is guaranteed to result in | |
| 2862 trouble sooner or later. */ | |
| 826 | 2863 data.byte_charpos = BYTE_BUF_ZV (b) + 1; |
| 428 | 2864 } |
| 2865 | |
| 2866 /* Calculate left whitespace boundary. */ | |
| 2867 { | |
| 2868 int elt = 0; | |
| 2869 | |
| 2870 /* Whitespace past a newline is considered right whitespace. */ | |
| 2871 while (elt < Dynarr_length (db->runes)) | |
| 2872 { | |
| 2873 struct rune *rb = Dynarr_atp (db->runes, elt); | |
| 2874 | |
| 2875 if ((rb->type == RUNE_CHAR && rb->object.chr.ch == ' ') | |
| 2876 || rb->type == RUNE_BLANK) | |
| 2877 { | |
| 2878 dl->bounds.left_white += rb->width; | |
| 2879 elt++; | |
| 2880 } | |
| 2881 else | |
| 2882 elt = Dynarr_length (db->runes); | |
| 2883 } | |
| 2884 } | |
| 2885 | |
| 2886 /* Calculate right whitespace boundary. */ | |
| 2887 { | |
| 2888 int elt = Dynarr_length (db->runes) - 1; | |
| 2889 int done = 0; | |
| 2890 | |
| 2891 while (!done && elt >= 0) | |
| 2892 { | |
| 2893 struct rune *rb = Dynarr_atp (db->runes, elt); | |
| 2894 | |
| 2895 if (!(rb->type == RUNE_CHAR && rb->object.chr.ch < 0x100 | |
| 2896 && isspace (rb->object.chr.ch)) | |
| 2897 && !rb->type == RUNE_BLANK) | |
| 2898 { | |
| 2899 dl->bounds.right_white = rb->xpos + rb->width; | |
| 2900 done = 1; | |
| 2901 } | |
| 2902 | |
| 2903 elt--; | |
| 2904 | |
| 2905 } | |
| 2906 | |
| 2907 /* The line is blank so everything is considered to be right | |
| 2908 whitespace. */ | |
| 2909 if (!done) | |
| 2910 dl->bounds.right_white = dl->bounds.left_in; | |
| 2911 } | |
| 2912 | |
| 2913 /* Set the display blocks bounds. */ | |
| 2914 db->start_pos = dl->bounds.left_in; | |
| 2915 if (Dynarr_length (db->runes)) | |
| 2916 { | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
2917 struct rune *rb = Dynarr_lastp (db->runes); |
| 428 | 2918 |
| 2919 db->end_pos = rb->xpos + rb->width; | |
| 2920 } | |
| 2921 else | |
| 2922 db->end_pos = dl->bounds.right_white; | |
| 2923 | |
| 819 | 2924 calculate_baseline (&data); |
| 428 | 2925 |
| 2926 dl->ascent = data.new_ascent; | |
| 2927 dl->descent = data.new_descent; | |
| 2928 | |
| 2929 { | |
| 2930 unsigned short ascent = (unsigned short) XINT (w->minimum_line_ascent); | |
| 2931 | |
| 2932 if (dl->ascent < ascent) | |
| 2933 dl->ascent = ascent; | |
| 2934 } | |
| 2935 { | |
| 2936 unsigned short descent = (unsigned short) XINT (w->minimum_line_descent); | |
| 2937 | |
| 2938 if (dl->descent < descent) | |
| 2939 dl->descent = descent; | |
| 2940 } | |
| 2941 | |
| 819 | 2942 calculate_yoffset (dl, db); |
| 2943 | |
| 428 | 2944 dl->cursor_elt = data.cursor_x; |
| 2945 /* #### lossage lossage lossage! Fix this shit! */ | |
| 826 | 2946 if (data.byte_charpos > BYTE_BUF_ZV (b)) |
| 2947 dl->end_charpos = BUF_ZV (b); | |
| 428 | 2948 else |
| 826 | 2949 dl->end_charpos = bytebpos_to_charbpos (b, data.byte_charpos) - 1; |
| 428 | 2950 if (truncate_win) |
| 826 | 2951 data.dl->num_chars = column_at_point (b, dl->end_charpos, 0); |
| 428 | 2952 else |
| 2953 /* This doesn't correctly take into account tabs and control | |
| 2954 characters but if the window isn't being truncated then this | |
| 2955 value isn't going to end up being used anyhow. */ | |
| 826 | 2956 data.dl->num_chars = dl->end_charpos - dl->charpos; |
| 428 | 2957 |
| 2958 /* #### handle horizontally scrolled line with text none of which | |
| 2959 was actually laid out. */ | |
| 2960 | |
| 2961 /* #### handle any remainder of overlay arrow */ | |
| 2962 | |
| 2963 if (*prop == ADD_FAILED) | |
| 2964 *prop = NULL; | |
| 2965 | |
| 2966 if (truncate_win && *prop) | |
| 2967 { | |
| 2968 Dynarr_free (*prop); | |
| 2969 *prop = NULL; | |
| 2970 } | |
| 2971 | |
| 2972 extent_fragment_delete (data.ef); | |
| 2973 | |
| 2974 /* #### If we started at EOB, then make sure we return a value past | |
| 2975 it so that regenerate_window will exit properly. This is bogus. | |
| 2976 The main loop should get fixed so that it isn't necessary to call | |
| 2977 this function if we are already at EOB. */ | |
| 2978 | |
| 826 | 2979 if (data.byte_charpos == BYTE_BUF_ZV (b) && byte_start_pos == BYTE_BUF_ZV (b)) |
| 2980 return data.byte_charpos + 1; /* Yuck! */ | |
| 428 | 2981 else |
| 826 | 2982 return data.byte_charpos; |
| 428 | 2983 } |
| 2984 | |
| 2985 /* Display the overlay arrow at the beginning of the given line. */ | |
| 2986 | |
| 2987 static int | |
| 2988 create_overlay_glyph_block (struct window *w, struct display_line *dl) | |
| 2989 { | |
| 2990 struct frame *f = XFRAME (w->frame); | |
| 2991 struct device *d = XDEVICE (f->device); | |
| 2992 pos_data data; | |
| 2993 | |
| 2994 /* If Voverlay_arrow_string isn't valid then just fail silently. */ | |
| 2995 if (!STRINGP (Voverlay_arrow_string) && !GLYPHP (Voverlay_arrow_string)) | |
| 2996 return 0; | |
| 2997 | |
| 2998 xzero (data); | |
| 2999 data.ef = NULL; | |
| 3000 data.d = d; | |
| 793 | 3001 data.window = wrap_window (w); |
| 428 | 3002 data.db = get_display_block_from_line (dl, OVERWRITE); |
| 3003 data.dl = dl; | |
| 3004 data.pixpos = dl->bounds.left_in; | |
| 3005 data.max_pixpos = dl->bounds.right_in; | |
| 3006 data.cursor_type = NO_CURSOR; | |
| 3007 data.cursor_x = -1; | |
| 3008 data.findex = DEFAULT_INDEX; | |
| 3009 data.last_charset = Qunbound; | |
| 3010 data.last_findex = DEFAULT_INDEX; | |
| 3011 data.result_str = Qnil; | |
| 3012 data.string = Qnil; | |
| 3013 | |
| 3014 Dynarr_reset (data.db->runes); | |
| 3015 | |
| 3016 if (STRINGP (Voverlay_arrow_string)) | |
| 3017 { | |
| 867 | 3018 add_ibyte_string_runes |
| 428 | 3019 (&data, |
| 3020 XSTRING_DATA (Voverlay_arrow_string), | |
| 3021 XSTRING_LENGTH (Voverlay_arrow_string), | |
| 793 | 3022 1, 0); |
| 428 | 3023 } |
| 3024 else if (GLYPHP (Voverlay_arrow_string)) | |
| 3025 { | |
| 3026 struct glyph_block gb; | |
| 3027 | |
| 3028 gb.glyph = Voverlay_arrow_string; | |
| 3029 gb.extent = Qnil; | |
| 3030 add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0, 0); | |
| 3031 } | |
| 4187 | 3032 |
| 428 | 3033 if (data.max_pixmap_height) |
| 3034 { | |
| 3035 int height = data.new_ascent + data.new_descent; | |
| 3036 int pix_ascent, pix_descent; | |
| 4187 | 3037 |
| 428 | 3038 pix_descent = data.max_pixmap_height * data.new_descent / height; |
| 3039 pix_ascent = data.max_pixmap_height - pix_descent; | |
| 819 | 3040 calculate_baseline (&data); |
| 428 | 3041 |
| 3042 data.new_ascent = max (data.new_ascent, pix_ascent); | |
| 3043 data.new_descent = max (data.new_descent, pix_descent); | |
| 3044 } | |
| 3045 | |
| 3046 dl->ascent = data.new_ascent; | |
| 3047 dl->descent = data.new_descent; | |
| 3048 | |
| 3049 data.db->start_pos = dl->bounds.left_in; | |
| 3050 data.db->end_pos = data.pixpos; | |
| 3051 | |
| 819 | 3052 calculate_yoffset (dl, data.db); |
| 3053 | |
| 428 | 3054 return data.pixpos - dl->bounds.left_in; |
| 3055 } | |
| 3056 | |
| 3057 /* Add a type of glyph to a margin display block. */ | |
| 3058 | |
| 3059 static int | |
| 3060 add_margin_runes (struct display_line *dl, struct display_block *db, int start, | |
| 3061 int count, enum glyph_layout layout, int side, Lisp_Object window) | |
| 3062 { | |
| 3063 glyph_block_dynarr *gbd = (side == LEFT_GLYPHS | |
| 3064 ? dl->left_glyphs | |
| 3065 : dl->right_glyphs); | |
| 3066 int elt, end; | |
| 3067 int reverse; | |
| 442 | 3068 struct window *w = XWINDOW (window); |
| 3069 struct frame *f = XFRAME (w->frame); | |
| 3070 struct device *d = XDEVICE (f->device); | |
| 3071 pos_data data; | |
| 3072 | |
| 3073 xzero (data); | |
| 3074 data.d = d; | |
| 3075 data.window = window; | |
| 3076 data.db = db; | |
| 3077 data.dl = dl; | |
| 3078 data.pixpos = start; | |
| 3079 data.cursor_type = NO_CURSOR; | |
| 3080 data.cursor_x = -1; | |
| 3081 data.last_charset = Qunbound; | |
| 3082 data.last_findex = DEFAULT_INDEX; | |
| 3083 data.result_str = Qnil; | |
| 3084 data.string = Qnil; | |
| 3085 data.new_ascent = dl->ascent; | |
| 3086 data.new_descent = dl->descent; | |
| 428 | 3087 |
| 3088 if ((layout == GL_WHITESPACE && side == LEFT_GLYPHS) | |
| 3089 || (layout == GL_INSIDE_MARGIN && side == RIGHT_GLYPHS)) | |
| 3090 { | |
| 3091 reverse = 1; | |
| 3092 elt = Dynarr_length (gbd) - 1; | |
| 3093 end = 0; | |
| 3094 } | |
| 3095 else | |
| 3096 { | |
| 3097 reverse = 0; | |
| 3098 elt = 0; | |
| 3099 end = Dynarr_length (gbd); | |
| 3100 } | |
| 3101 | |
| 3102 while (count && ((!reverse && elt < end) || (reverse && elt >= end))) | |
| 3103 { | |
| 3104 struct glyph_block *gb = Dynarr_atp (gbd, elt); | |
| 3105 | |
| 3106 if (NILP (gb->extent)) | |
| 2500 | 3107 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3108 |
| 3109 if (gb->active && | |
| 3110 ((side == LEFT_GLYPHS && | |
| 3111 extent_begin_glyph_layout (XEXTENT (gb->extent)) == layout) | |
| 3112 || (side == RIGHT_GLYPHS && | |
| 3113 extent_end_glyph_layout (XEXTENT (gb->extent)) == layout))) | |
| 3114 { | |
| 442 | 3115 data.findex = gb->findex; |
| 3116 data.max_pixpos = data.pixpos + gb->width; | |
| 3117 add_glyph_rune (&data, gb, side, 0, NULL); | |
| 428 | 3118 count--; |
| 3119 gb->active = 0; | |
| 3120 } | |
| 3121 | |
| 3122 (reverse ? elt-- : elt++); | |
| 3123 } | |
| 3124 | |
| 819 | 3125 calculate_baseline (&data); |
| 442 | 3126 |
| 3127 dl->ascent = data.new_ascent; | |
| 3128 dl->descent = data.new_descent; | |
| 3129 | |
| 819 | 3130 calculate_yoffset (dl, data.db); |
| 3131 | |
| 442 | 3132 return data.pixpos; |
| 428 | 3133 } |
| 3134 | |
| 3135 /* Add a blank to a margin display block. */ | |
| 3136 | |
| 3137 static void | |
| 2286 | 3138 add_margin_blank (struct display_line *UNUSED (dl), struct display_block *db, |
| 428 | 3139 struct window *w, int xpos, int width, int side) |
| 3140 { | |
| 3141 struct rune rb; | |
| 3142 | |
| 3143 rb.findex = (side == LEFT_GLYPHS | |
| 3144 ? get_builtin_face_cache_index (w, Vleft_margin_face) | |
| 3145 : get_builtin_face_cache_index (w, Vright_margin_face)); | |
| 3146 rb.xpos = xpos; | |
| 3147 rb.width = width; | |
| 826 | 3148 rb.charpos = -1; |
| 428 | 3149 rb.endpos = 0; |
| 3150 rb.type = RUNE_BLANK; | |
| 3151 rb.cursor_type = CURSOR_OFF; | |
| 3152 | |
| 3153 Dynarr_add (db->runes, rb); | |
| 3154 } | |
| 3155 | |
| 3156 /* Display glyphs in the left outside margin, left inside margin and | |
| 3157 left whitespace area. */ | |
| 3158 | |
| 3159 static void | |
| 3160 create_left_glyph_block (struct window *w, struct display_line *dl, | |
| 3161 int overlay_width) | |
| 3162 { | |
| 3163 Lisp_Object window; | |
| 3164 | |
| 3165 int use_overflow = (NILP (w->use_left_overflow) ? 0 : 1); | |
| 3166 int elt, end_xpos; | |
| 3167 int out_end, in_out_start, in_in_end, white_out_start, white_in_start; | |
| 3168 int out_cnt, in_out_cnt, in_in_cnt, white_out_cnt, white_in_cnt; | |
| 3169 int left_in_start = dl->bounds.left_in; | |
| 3170 int left_in_end = dl->bounds.left_in + overlay_width; | |
| 3171 | |
| 3172 struct display_block *odb, *idb; | |
| 3173 | |
| 793 | 3174 window = wrap_window (w); |
| 428 | 3175 |
| 3176 /* We have to add the glyphs to the line in the order outside, | |
| 3177 inside, whitespace. However the precedence dictates that we | |
| 3178 determine how many will fit in the reverse order. */ | |
| 3179 | |
| 3180 /* Determine how many whitespace glyphs we can display and where | |
| 3181 they should start. */ | |
| 3182 white_in_start = dl->bounds.left_white; | |
| 3183 white_out_start = left_in_start; | |
| 3184 white_out_cnt = white_in_cnt = 0; | |
| 3185 elt = 0; | |
| 3186 | |
| 3187 while (elt < Dynarr_length (dl->left_glyphs)) | |
| 3188 { | |
| 3189 struct glyph_block *gb = Dynarr_atp (dl->left_glyphs, elt); | |
| 3190 | |
| 3191 if (NILP (gb->extent)) | |
| 2500 | 3192 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3193 |
| 3194 if (extent_begin_glyph_layout (XEXTENT (gb->extent)) == GL_WHITESPACE) | |
| 3195 { | |
| 3196 int width; | |
| 3197 | |
| 438 | 3198 width = glyph_width (gb->glyph, window); |
| 428 | 3199 |
| 3200 if (white_in_start - width >= left_in_end) | |
| 3201 { | |
| 3202 white_in_cnt++; | |
| 3203 white_in_start -= width; | |
| 3204 gb->width = width; | |
| 3205 gb->active = 1; | |
| 3206 } | |
| 3207 else if (use_overflow | |
| 3208 && (white_out_start - width > dl->bounds.left_out)) | |
| 3209 { | |
| 3210 white_out_cnt++; | |
| 3211 white_out_start -= width; | |
| 3212 gb->width = width; | |
| 3213 gb->active = 1; | |
| 3214 } | |
| 3215 else | |
| 3216 gb->active = 0; | |
| 3217 } | |
| 3218 | |
| 3219 elt++; | |
| 3220 } | |
| 3221 | |
| 3222 /* Determine how many inside margin glyphs we can display and where | |
| 3223 they should start. The inside margin glyphs get whatever space | |
| 3224 is left after the whitespace glyphs have been displayed. These | |
| 3225 are tricky to calculate since if we decide to use the overflow | |
| 3226 area we basically have to start over. So for these we build up a | |
| 3227 list of just the inside margin glyphs and manipulate it to | |
| 3228 determine the needed info. */ | |
| 3229 { | |
| 3230 glyph_block_dynarr *ib; | |
| 3231 int avail_in, avail_out; | |
| 3232 int done = 0; | |
| 3233 int marker = 0; | |
| 3234 int used_in, used_out; | |
| 3235 | |
| 3236 elt = 0; | |
| 3237 used_in = used_out = 0; | |
| 3238 ib = Dynarr_new (glyph_block); | |
| 3239 while (elt < Dynarr_length (dl->left_glyphs)) | |
| 3240 { | |
| 3241 struct glyph_block *gb = Dynarr_atp (dl->left_glyphs, elt); | |
| 3242 | |
| 3243 if (NILP (gb->extent)) | |
| 2500 | 3244 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3245 |
| 3246 if (extent_begin_glyph_layout (XEXTENT (gb->extent)) == | |
| 3247 GL_INSIDE_MARGIN) | |
| 3248 { | |
| 438 | 3249 gb->width = glyph_width (gb->glyph, window); |
| 428 | 3250 used_in += gb->width; |
| 3251 Dynarr_add (ib, *gb); | |
| 3252 } | |
| 3253 | |
| 3254 elt++; | |
| 3255 } | |
| 3256 | |
| 3257 if (white_out_cnt) | |
| 3258 avail_in = 0; | |
| 3259 else | |
| 3260 { | |
| 3261 avail_in = white_in_start - left_in_end; | |
| 3262 if (avail_in < 0) | |
| 3263 avail_in = 0; | |
| 3264 } | |
| 3265 | |
| 3266 if (!use_overflow) | |
| 3267 avail_out = 0; | |
| 3268 else | |
| 3269 avail_out = white_out_start - dl->bounds.left_out; | |
| 3270 | |
| 3271 marker = 0; | |
| 3272 while (!done && marker < Dynarr_length (ib)) | |
| 3273 { | |
| 3274 int width = Dynarr_atp (ib, marker)->width; | |
| 3275 | |
| 3276 /* If everything now fits in the available inside margin | |
| 4187 | 3277 space, we're done. */ |
| 428 | 3278 if (used_in <= avail_in) |
| 3279 done = 1; | |
| 3280 else | |
| 3281 { | |
| 3282 /* Otherwise see if we have room to move a glyph to the | |
| 4187 | 3283 outside. */ |
| 428 | 3284 if (used_out + width <= avail_out) |
| 3285 { | |
| 3286 used_out += width; | |
| 3287 used_in -= width; | |
| 3288 } | |
| 3289 else | |
| 3290 done = 1; | |
| 3291 } | |
| 3292 | |
| 3293 if (!done) | |
| 3294 marker++; | |
| 3295 } | |
| 3296 | |
| 3297 /* At this point we now know that everything from marker on goes in | |
| 3298 the inside margin and everything before it goes in the outside | |
| 3299 margin. The stuff going into the outside margin is guaranteed | |
| 3300 to fit, but we may have to trim some stuff from the inside. */ | |
| 3301 | |
| 3302 in_in_end = left_in_end; | |
| 3303 in_out_start = white_out_start; | |
| 3304 in_out_cnt = in_in_cnt = 0; | |
| 3305 | |
| 3306 Dynarr_free (ib); | |
| 3307 elt = 0; | |
| 3308 while (elt < Dynarr_length (dl->left_glyphs)) | |
| 3309 { | |
| 3310 struct glyph_block *gb = Dynarr_atp (dl->left_glyphs, elt); | |
| 3311 | |
| 3312 if (NILP (gb->extent)) | |
| 2500 | 3313 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3314 |
| 3315 if (extent_begin_glyph_layout (XEXTENT (gb->extent)) == | |
| 3316 GL_INSIDE_MARGIN) | |
| 3317 { | |
| 438 | 3318 int width = glyph_width (gb->glyph, window); |
| 428 | 3319 |
| 3320 if (used_out) | |
| 3321 { | |
| 3322 in_out_cnt++; | |
| 3323 in_out_start -= width; | |
| 3324 gb->width = width; | |
| 3325 gb->active = 1; | |
| 3326 used_out -= width; | |
| 3327 } | |
| 3328 else if (in_in_end + width < white_in_start) | |
| 3329 { | |
| 3330 in_in_cnt++; | |
| 3331 in_in_end += width; | |
| 3332 gb->width = width; | |
| 3333 gb->active = 1; | |
| 3334 } | |
| 3335 else | |
| 3336 gb->active = 0; | |
| 3337 } | |
| 3338 | |
| 3339 elt++; | |
| 3340 } | |
| 3341 } | |
| 3342 | |
| 3343 /* Determine how many outside margin glyphs we can display. They | |
| 3344 always start at the left outside margin and can only use the | |
| 3345 outside margin space. */ | |
| 3346 out_end = dl->bounds.left_out; | |
| 3347 out_cnt = 0; | |
| 3348 elt = 0; | |
| 3349 | |
| 3350 while (elt < Dynarr_length (dl->left_glyphs)) | |
| 3351 { | |
| 3352 struct glyph_block *gb = Dynarr_atp (dl->left_glyphs, elt); | |
| 3353 | |
| 3354 if (NILP (gb->extent)) | |
| 2500 | 3355 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3356 |
| 3357 if (extent_begin_glyph_layout (XEXTENT (gb->extent)) == | |
| 3358 GL_OUTSIDE_MARGIN) | |
| 3359 { | |
| 438 | 3360 int width = glyph_width (gb->glyph, window); |
| 428 | 3361 |
| 3362 if (out_end + width <= in_out_start) | |
| 3363 { | |
| 3364 out_cnt++; | |
| 3365 out_end += width; | |
| 3366 gb->width = width; | |
| 3367 gb->active = 1; | |
| 3368 } | |
| 3369 else | |
| 3370 gb->active = 0; | |
| 3371 } | |
| 3372 | |
| 3373 elt++; | |
| 3374 } | |
| 3375 | |
| 3376 /* Now that we know where everything goes, we add the glyphs as | |
| 3377 runes to the appropriate display blocks. */ | |
| 3378 if (out_cnt || in_out_cnt || white_out_cnt) | |
| 3379 { | |
| 3380 odb = get_display_block_from_line (dl, LEFT_OUTSIDE_MARGIN); | |
| 3381 odb->start_pos = dl->bounds.left_out; | |
| 3382 /* #### We should stop adding a blank to account for the space | |
| 4187 | 3383 between the end of the glyphs and the margin and instead set |
| 3384 this accordingly. */ | |
| 428 | 3385 odb->end_pos = dl->bounds.left_in; |
| 3386 Dynarr_reset (odb->runes); | |
| 3387 } | |
| 3388 else | |
| 3389 odb = 0; | |
| 3390 | |
| 3391 if (in_in_cnt || white_in_cnt) | |
| 3392 { | |
| 3393 idb = get_display_block_from_line (dl, LEFT_INSIDE_MARGIN); | |
| 3394 idb->start_pos = dl->bounds.left_in; | |
| 3395 /* #### See above comment for odb->end_pos */ | |
| 3396 idb->end_pos = dl->bounds.left_white; | |
| 3397 Dynarr_reset (idb->runes); | |
| 3398 } | |
| 3399 else | |
| 3400 idb = 0; | |
| 3401 | |
| 3402 /* First add the outside margin glyphs. */ | |
| 3403 if (out_cnt) | |
| 3404 end_xpos = add_margin_runes (dl, odb, dl->bounds.left_out, out_cnt, | |
| 3405 GL_OUTSIDE_MARGIN, LEFT_GLYPHS, window); | |
| 3406 else | |
| 3407 end_xpos = dl->bounds.left_out; | |
| 3408 | |
| 3409 /* There may be blank space between the outside margin glyphs and | |
| 3410 the inside margin glyphs. If so, add a blank. */ | |
| 3411 if (in_out_cnt && (in_out_start - end_xpos)) | |
| 3412 { | |
| 3413 add_margin_blank (dl, odb, w, end_xpos, in_out_start - end_xpos, | |
| 3414 LEFT_GLYPHS); | |
| 3415 } | |
| 3416 | |
| 3417 /* Next add the inside margin glyphs which are actually in the | |
| 3418 outside margin. */ | |
| 3419 if (in_out_cnt) | |
| 3420 { | |
| 3421 end_xpos = add_margin_runes (dl, odb, in_out_start, in_out_cnt, | |
| 3422 GL_INSIDE_MARGIN, LEFT_GLYPHS, window); | |
| 3423 } | |
| 3424 | |
| 3425 /* If we didn't add any inside margin glyphs to the outside margin, | |
| 3426 but are adding whitespace glyphs, then we need to add a blank | |
| 3427 here. */ | |
| 3428 if (!in_out_cnt && white_out_cnt && (white_out_start - end_xpos)) | |
| 3429 { | |
| 3430 add_margin_blank (dl, odb, w, end_xpos, white_out_start - end_xpos, | |
| 3431 LEFT_GLYPHS); | |
| 3432 } | |
| 3433 | |
| 3434 /* Next add the whitespace margin glyphs which are actually in the | |
| 3435 outside margin. */ | |
| 3436 if (white_out_cnt) | |
| 3437 { | |
| 3438 end_xpos = add_margin_runes (dl, odb, white_out_start, white_out_cnt, | |
| 3439 GL_WHITESPACE, LEFT_GLYPHS, window); | |
| 3440 } | |
| 3441 | |
| 3442 /* We take care of clearing between the end of the glyphs and the | |
| 3443 start of the inside margin for lines which have glyphs. */ | |
| 3444 if (odb && (left_in_start - end_xpos)) | |
| 3445 { | |
| 3446 add_margin_blank (dl, odb, w, end_xpos, left_in_start - end_xpos, | |
| 3447 LEFT_GLYPHS); | |
| 3448 } | |
| 3449 | |
| 3450 /* Next add the inside margin glyphs which are actually in the | |
| 3451 inside margin. */ | |
| 3452 if (in_in_cnt) | |
| 3453 { | |
| 3454 end_xpos = add_margin_runes (dl, idb, left_in_end, in_in_cnt, | |
| 3455 GL_INSIDE_MARGIN, LEFT_GLYPHS, window); | |
| 3456 } | |
| 3457 else | |
| 3458 end_xpos = left_in_end; | |
| 3459 | |
| 3460 /* Make sure that the area between the end of the inside margin | |
| 3461 glyphs and the whitespace glyphs is cleared. */ | |
| 3462 if (idb && (white_in_start - end_xpos > 0)) | |
| 3463 { | |
| 3464 add_margin_blank (dl, idb, w, end_xpos, white_in_start - end_xpos, | |
| 3465 LEFT_GLYPHS); | |
| 3466 } | |
| 3467 | |
| 3468 /* Next add the whitespace margin glyphs which are actually in the | |
| 3469 inside margin. */ | |
| 3470 if (white_in_cnt) | |
| 3471 { | |
| 3472 add_margin_runes (dl, idb, white_in_start, white_in_cnt, GL_WHITESPACE, | |
| 3473 LEFT_GLYPHS, window); | |
| 3474 } | |
| 3475 | |
| 3476 /* Whitespace glyphs always end right next to the text block so | |
| 3477 there is nothing we have to make sure is cleared after them. */ | |
| 3478 } | |
| 3479 | |
| 3480 /* Display glyphs in the right outside margin, right inside margin and | |
| 3481 right whitespace area. */ | |
| 3482 | |
| 3483 static void | |
| 3484 create_right_glyph_block (struct window *w, struct display_line *dl) | |
| 3485 { | |
| 3486 Lisp_Object window; | |
| 3487 | |
| 3488 int use_overflow = (NILP (w->use_right_overflow) ? 0 : 1); | |
| 3489 int elt, end_xpos; | |
| 3490 int out_start, in_out_end, in_in_start, white_out_end, white_in_end; | |
| 3491 int out_cnt, in_out_cnt, in_in_cnt, white_out_cnt, white_in_cnt; | |
| 3492 | |
| 3493 struct display_block *odb, *idb; | |
| 3494 | |
| 793 | 3495 window = wrap_window (w); |
| 428 | 3496 |
| 3497 /* We have to add the glyphs to the line in the order outside, | |
| 3498 inside, whitespace. However the precedence dictates that we | |
| 3499 determine how many will fit in the reverse order. */ | |
| 3500 | |
| 3501 /* Determine how many whitespace glyphs we can display and where | |
| 3502 they should start. */ | |
| 3503 white_in_end = dl->bounds.right_white; | |
| 3504 white_out_end = dl->bounds.right_in; | |
| 3505 white_out_cnt = white_in_cnt = 0; | |
| 3506 elt = 0; | |
| 3507 | |
| 3508 while (elt < Dynarr_length (dl->right_glyphs)) | |
| 3509 { | |
| 3510 struct glyph_block *gb = Dynarr_atp (dl->right_glyphs, elt); | |
| 3511 | |
| 3512 if (NILP (gb->extent)) | |
| 2500 | 3513 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3514 |
| 3515 if (extent_end_glyph_layout (XEXTENT (gb->extent)) == GL_WHITESPACE) | |
| 3516 { | |
| 438 | 3517 int width = glyph_width (gb->glyph, window); |
| 428 | 3518 |
| 3519 if (white_in_end + width <= dl->bounds.right_in) | |
| 3520 { | |
| 3521 white_in_cnt++; | |
| 3522 white_in_end += width; | |
| 3523 gb->width = width; | |
| 3524 gb->active = 1; | |
| 3525 } | |
| 3526 else if (use_overflow | |
| 3527 && (white_out_end + width <= dl->bounds.right_out)) | |
| 3528 { | |
| 3529 white_out_cnt++; | |
| 3530 white_out_end += width; | |
| 3531 gb->width = width; | |
| 3532 gb->active = 1; | |
| 3533 } | |
| 3534 else | |
| 3535 gb->active = 0; | |
| 3536 } | |
| 3537 | |
| 3538 elt++; | |
| 3539 } | |
| 3540 | |
| 3541 /* Determine how many inside margin glyphs we can display and where | |
| 3542 they should start. The inside margin glyphs get whatever space | |
| 3543 is left after the whitespace glyphs have been displayed. These | |
| 3544 are tricky to calculate since if we decide to use the overflow | |
| 3545 area we basically have to start over. So for these we build up a | |
| 3546 list of just the inside margin glyphs and manipulate it to | |
| 3547 determine the needed info. */ | |
| 3548 { | |
| 3549 glyph_block_dynarr *ib; | |
| 3550 int avail_in, avail_out; | |
| 3551 int done = 0; | |
| 3552 int marker = 0; | |
| 3553 int used_in, used_out; | |
| 3554 | |
| 3555 elt = 0; | |
| 3556 used_in = used_out = 0; | |
| 3557 ib = Dynarr_new (glyph_block); | |
| 3558 while (elt < Dynarr_length (dl->right_glyphs)) | |
| 3559 { | |
| 3560 struct glyph_block *gb = Dynarr_atp (dl->right_glyphs, elt); | |
| 3561 | |
| 3562 if (NILP (gb->extent)) | |
| 2500 | 3563 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3564 |
| 3565 if (extent_end_glyph_layout (XEXTENT (gb->extent)) == GL_INSIDE_MARGIN) | |
| 3566 { | |
| 438 | 3567 gb->width = glyph_width (gb->glyph, window); |
| 428 | 3568 used_in += gb->width; |
| 3569 Dynarr_add (ib, *gb); | |
| 3570 } | |
| 3571 | |
| 3572 elt++; | |
| 3573 } | |
| 3574 | |
| 3575 if (white_out_cnt) | |
| 3576 avail_in = 0; | |
| 3577 else | |
| 3578 avail_in = dl->bounds.right_in - white_in_end; | |
| 3579 | |
| 3580 if (!use_overflow) | |
| 3581 avail_out = 0; | |
| 3582 else | |
| 3583 avail_out = dl->bounds.right_out - white_out_end; | |
| 3584 | |
| 3585 marker = 0; | |
| 3586 while (!done && marker < Dynarr_length (ib)) | |
| 3587 { | |
| 3588 int width = Dynarr_atp (ib, marker)->width; | |
| 3589 | |
| 3590 /* If everything now fits in the available inside margin | |
| 4187 | 3591 space, we're done. */ |
| 428 | 3592 if (used_in <= avail_in) |
| 3593 done = 1; | |
| 3594 else | |
| 3595 { | |
| 3596 /* Otherwise see if we have room to move a glyph to the | |
| 4187 | 3597 outside. */ |
| 428 | 3598 if (used_out + width <= avail_out) |
| 3599 { | |
| 3600 used_out += width; | |
| 3601 used_in -= width; | |
| 3602 } | |
| 3603 else | |
| 3604 done = 1; | |
| 3605 } | |
| 3606 | |
| 3607 if (!done) | |
| 3608 marker++; | |
| 3609 } | |
| 3610 | |
| 3611 /* At this point we now know that everything from marker on goes in | |
| 3612 the inside margin and everything before it goes in the outside | |
| 3613 margin. The stuff going into the outside margin is guaranteed | |
| 3614 to fit, but we may have to trim some stuff from the inside. */ | |
| 3615 | |
| 3616 in_in_start = dl->bounds.right_in; | |
| 3617 in_out_end = dl->bounds.right_in; | |
| 3618 in_out_cnt = in_in_cnt = 0; | |
| 3619 | |
| 3620 Dynarr_free (ib); | |
| 3621 elt = 0; | |
| 3622 while (elt < Dynarr_length (dl->right_glyphs)) | |
| 3623 { | |
| 3624 struct glyph_block *gb = Dynarr_atp (dl->right_glyphs, elt); | |
| 3625 | |
| 3626 if (NILP (gb->extent)) | |
| 2500 | 3627 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3628 |
| 3629 if (extent_end_glyph_layout (XEXTENT (gb->extent)) == GL_INSIDE_MARGIN) | |
| 3630 { | |
| 438 | 3631 int width = glyph_width (gb->glyph, window); |
| 428 | 3632 |
| 3633 if (used_out) | |
| 3634 { | |
| 3635 in_out_cnt++; | |
| 3636 in_out_end += width; | |
| 3637 gb->width = width; | |
| 3638 gb->active = 1; | |
| 3639 used_out -= width; | |
| 3640 } | |
| 3641 else if (in_in_start - width >= white_in_end) | |
| 3642 { | |
| 3643 in_in_cnt++; | |
| 3644 in_in_start -= width; | |
| 3645 gb->width = width; | |
| 3646 gb->active = 1; | |
| 3647 } | |
| 3648 else | |
| 3649 gb->active = 0; | |
| 3650 } | |
| 3651 | |
| 3652 elt++; | |
| 3653 } | |
| 3654 } | |
| 3655 | |
| 3656 /* Determine how many outside margin glyphs we can display. They | |
| 3657 always start at the right outside margin and can only use the | |
| 3658 outside margin space. */ | |
| 3659 out_start = dl->bounds.right_out; | |
| 3660 out_cnt = 0; | |
| 3661 elt = 0; | |
| 3662 | |
| 3663 while (elt < Dynarr_length (dl->right_glyphs)) | |
| 3664 { | |
| 3665 struct glyph_block *gb = Dynarr_atp (dl->right_glyphs, elt); | |
| 3666 | |
| 3667 if (NILP (gb->extent)) | |
| 2500 | 3668 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3669 |
| 3670 if (extent_end_glyph_layout (XEXTENT (gb->extent)) == GL_OUTSIDE_MARGIN) | |
| 3671 { | |
| 438 | 3672 int width = glyph_width (gb->glyph, window); |
| 428 | 3673 |
| 3674 if (out_start - width >= in_out_end) | |
| 3675 { | |
| 3676 out_cnt++; | |
| 3677 out_start -= width; | |
| 3678 gb->width = width; | |
| 3679 gb->active = 1; | |
| 3680 } | |
| 3681 else | |
| 3682 gb->active = 0; | |
| 3683 } | |
| 3684 | |
| 3685 elt++; | |
| 3686 } | |
| 3687 | |
| 3688 /* Now that we now where everything goes, we add the glyphs as runes | |
| 3689 to the appropriate display blocks. */ | |
| 3690 if (out_cnt || in_out_cnt || white_out_cnt) | |
| 3691 { | |
| 3692 odb = get_display_block_from_line (dl, RIGHT_OUTSIDE_MARGIN); | |
| 3693 /* #### See comments before odb->start_pos init in | |
| 4187 | 3694 create_left_glyph_block */ |
| 428 | 3695 odb->start_pos = dl->bounds.right_in; |
| 3696 odb->end_pos = dl->bounds.right_out; | |
| 3697 Dynarr_reset (odb->runes); | |
| 3698 } | |
| 3699 else | |
| 3700 odb = 0; | |
| 3701 | |
| 3702 if (in_in_cnt || white_in_cnt) | |
| 3703 { | |
| 3704 idb = get_display_block_from_line (dl, RIGHT_INSIDE_MARGIN); | |
| 3705 idb->start_pos = dl->bounds.right_white; | |
| 3706 /* #### See comments before odb->start_pos init in | |
| 4187 | 3707 create_left_glyph_block */ |
| 428 | 3708 idb->end_pos = dl->bounds.right_in; |
| 3709 Dynarr_reset (idb->runes); | |
| 3710 } | |
| 3711 else | |
| 3712 idb = 0; | |
| 3713 | |
| 3714 /* First add the whitespace margin glyphs which are actually in the | |
| 3715 inside margin. */ | |
| 3716 if (white_in_cnt) | |
| 3717 { | |
| 3718 end_xpos = add_margin_runes (dl, idb, dl->bounds.right_white, | |
| 3719 white_in_cnt, GL_WHITESPACE, RIGHT_GLYPHS, | |
| 3720 window); | |
| 3721 } | |
| 3722 else | |
| 3723 end_xpos = dl->bounds.right_white; | |
| 3724 | |
| 3725 /* Make sure that the area between the end of the whitespace glyphs | |
| 3726 and the inside margin glyphs is cleared. */ | |
| 3727 if (in_in_cnt && (in_in_start - end_xpos)) | |
| 3728 { | |
| 3729 add_margin_blank (dl, idb, w, end_xpos, in_in_start - end_xpos, | |
| 3730 RIGHT_GLYPHS); | |
| 3731 } | |
| 3732 | |
| 3733 /* Next add the inside margin glyphs which are actually in the | |
| 3734 inside margin. */ | |
| 3735 if (in_in_cnt) | |
| 3736 { | |
| 3737 end_xpos = add_margin_runes (dl, idb, in_in_start, in_in_cnt, | |
| 3738 GL_INSIDE_MARGIN, RIGHT_GLYPHS, window); | |
| 3739 } | |
| 3740 | |
| 3741 /* If we didn't add any inside margin glyphs then make sure the rest | |
| 3742 of the inside margin area gets cleared. */ | |
| 3743 if (idb && (dl->bounds.right_in - end_xpos)) | |
| 3744 { | |
| 3745 add_margin_blank (dl, idb, w, end_xpos, dl->bounds.right_in - end_xpos, | |
| 3746 RIGHT_GLYPHS); | |
| 3747 } | |
| 3748 | |
| 3749 /* Next add any whitespace glyphs in the outside margin. */ | |
| 3750 if (white_out_cnt) | |
| 3751 { | |
| 3752 end_xpos = add_margin_runes (dl, odb, dl->bounds.right_in, white_out_cnt, | |
| 3753 GL_WHITESPACE, RIGHT_GLYPHS, window); | |
| 3754 } | |
| 3755 else | |
| 3756 end_xpos = dl->bounds.right_in; | |
| 3757 | |
| 3758 /* Next add any inside margin glyphs in the outside margin. */ | |
| 3759 if (in_out_cnt) | |
| 3760 { | |
| 3761 end_xpos = add_margin_runes (dl, odb, end_xpos, in_out_cnt, | |
| 3762 GL_INSIDE_MARGIN, RIGHT_GLYPHS, window); | |
| 3763 } | |
| 3764 | |
| 3765 /* There may be space between any whitespace or inside margin glyphs | |
| 3766 in the outside margin and the actual outside margin glyphs. */ | |
| 3767 if (odb && (out_start - end_xpos)) | |
| 3768 { | |
| 3769 add_margin_blank (dl, odb, w, end_xpos, out_start - end_xpos, | |
| 3770 RIGHT_GLYPHS); | |
| 3771 } | |
| 3772 | |
| 3773 /* Finally, add the outside margin glyphs. */ | |
| 3774 if (out_cnt) | |
| 3775 { | |
| 3776 add_margin_runes (dl, odb, out_start, out_cnt, GL_OUTSIDE_MARGIN, | |
| 3777 RIGHT_GLYPHS, window); | |
| 3778 } | |
| 3779 } | |
| 3780 | |
| 3781 | |
| 3782 /***************************************************************************/ | |
| 3783 /* */ | |
| 3784 /* modeline routines */ | |
| 3785 /* */ | |
| 3786 /***************************************************************************/ | |
| 3787 | |
| 438 | 3788 /* This function is also used in frame.c by `generate_title_string' */ |
| 3789 void | |
| 3790 generate_formatted_string_db (Lisp_Object format_str, Lisp_Object result_str, | |
| 4187 | 3791 struct window *w, struct display_line *dl, |
| 3792 struct display_block *db, face_index findex, | |
| 3793 int min_pixpos, int max_pixpos, int type) | |
| 438 | 3794 { |
| 3795 struct frame *f = XFRAME (w->frame); | |
| 3796 struct device *d = XDEVICE (f->device); | |
| 3797 | |
| 3798 pos_data data; | |
| 3799 int c_pixpos; | |
| 3800 Charcount offset = 0; | |
| 3801 | |
| 3802 xzero (data); | |
| 3803 data.d = d; | |
| 3804 data.db = db; | |
| 3805 data.dl = dl; | |
| 3806 data.findex = findex; | |
| 3807 data.pixpos = min_pixpos; | |
| 3808 data.max_pixpos = max_pixpos; | |
| 3809 data.cursor_type = NO_CURSOR; | |
| 3810 data.last_charset = Qunbound; | |
| 3811 data.last_findex = DEFAULT_INDEX; | |
| 3812 data.result_str = result_str; | |
| 3813 data.is_modeline = 1; | |
| 3814 data.string = Qnil; | |
| 793 | 3815 data.window = wrap_window (w); |
| 438 | 3816 |
| 3817 Dynarr_reset (formatted_string_extent_dynarr); | |
| 3818 Dynarr_reset (formatted_string_extent_start_dynarr); | |
| 3819 Dynarr_reset (formatted_string_extent_end_dynarr); | |
| 3820 | |
| 3821 /* result_str is nil when we're building a frame or icon title. Otherwise, | |
| 3822 we're building a modeline, so the offset starts at the modeline | |
| 442 | 3823 horizontal scrolling amount */ |
| 438 | 3824 if (! NILP (result_str)) |
| 3825 offset = w->modeline_hscroll; | |
| 3826 generate_fstring_runes (w, &data, 0, 0, -1, format_str, 0, | |
| 4187 | 3827 max_pixpos - min_pixpos, findex, type, &offset, |
| 438 | 3828 Qnil); |
| 3829 | |
| 3830 if (Dynarr_length (db->runes)) | |
| 3831 { | |
|
4844
91b3d00e717f
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Ben Wing <ben@xemacs.org>
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4815
diff
changeset
|
3832 struct rune *rb = Dynarr_lastp (db->runes); |
| 438 | 3833 c_pixpos = rb->xpos + rb->width; |
| 3834 } | |
| 3835 else | |
| 3836 c_pixpos = min_pixpos; | |
| 3837 | |
| 3838 /* If we don't reach the right side of the window, add a blank rune | |
| 3839 to make up the difference. This usually only occurs if the | |
| 3840 modeline face is using a proportional width font or a fixed width | |
| 3841 font of a different size from the default face font. */ | |
| 3842 | |
| 3843 if (c_pixpos < max_pixpos) | |
| 3844 { | |
| 3845 data.pixpos = c_pixpos; | |
| 3846 data.blank_width = max_pixpos - data.pixpos; | |
| 3847 | |
| 3848 add_blank_rune (&data, NULL, 0); | |
| 3849 } | |
| 3850 | |
| 3851 /* Now create the result string and frob the extents into it. */ | |
| 3852 if (!NILP (result_str)) | |
| 3853 { | |
| 3854 int elt; | |
| 3855 Bytecount len; | |
| 867 | 3856 Ibyte *strdata; |
| 438 | 3857 struct buffer *buf = XBUFFER (WINDOW_BUFFER (w)); |
| 3858 | |
| 442 | 3859 in_modeline_generation = 1; |
| 3860 | |
| 771 | 3861 sledgehammer_check_ascii_begin (result_str); |
| 438 | 3862 detach_all_extents (result_str); |
| 793 | 3863 resize_string (result_str, -1, |
| 4187 | 3864 data.bytepos - XSTRING_LENGTH (result_str)); |
| 438 | 3865 |
| 3866 strdata = XSTRING_DATA (result_str); | |
| 3867 | |
| 3868 for (elt = 0, len = 0; elt < Dynarr_length (db->runes); elt++) | |
|
4844
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parents:
4815
diff
changeset
|
3869 { |
|
91b3d00e717f
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Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
3870 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
|
3871 { |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
3872 len += (set_itext_ichar |
|
91b3d00e717f
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Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
3873 (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
|
3874 elt)->object.chr.ch)); |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
3875 } |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
3876 } |
| 438 | 3877 |
| 771 | 3878 init_string_ascii_begin (result_str); |
| 3879 bump_string_modiff (result_str); | |
| 3880 sledgehammer_check_ascii_begin (result_str); | |
| 3881 | |
| 438 | 3882 for (elt = 0; elt < Dynarr_length (formatted_string_extent_dynarr); |
| 4187 | 3883 elt++) |
| 3884 { | |
| 3885 Lisp_Object extent = Qnil; | |
| 3886 Lisp_Object child; | |
| 3887 | |
| 3888 extent = wrap_extent (Dynarr_at (formatted_string_extent_dynarr, elt)); | |
| 3889 child = Fgethash (extent, buf->modeline_extent_table, Qnil); | |
| 3890 if (NILP (child)) | |
| 3891 { | |
| 3892 child = Fmake_extent (Qnil, Qnil, result_str); | |
| 3893 Fputhash (extent, child, buf->modeline_extent_table); | |
| 3894 } | |
| 3895 Fset_extent_parent (child, extent); | |
| 3896 set_extent_endpoints | |
| 3897 (XEXTENT (child), | |
| 3898 Dynarr_at (formatted_string_extent_start_dynarr, elt), | |
| 3899 Dynarr_at (formatted_string_extent_end_dynarr, elt), | |
| 3900 result_str); | |
| 3901 } | |
| 442 | 3902 |
| 3903 in_modeline_generation = 0; | |
| 438 | 3904 } |
| 3905 } | |
| 3906 | |
| 428 | 3907 /* Ensure that the given display line DL accurately represents the |
| 3908 modeline for the given window. */ | |
| 3909 static void | |
| 3910 generate_modeline (struct window *w, struct display_line *dl, int type) | |
| 3911 { | |
| 3912 struct buffer *b = XBUFFER (w->buffer); | |
| 3913 struct frame *f = XFRAME (w->frame); | |
| 3914 struct device *d = XDEVICE (f->device); | |
| 3915 | |
| 3916 /* Unlike display line and rune pointers, this one can't change underneath | |
| 3917 our feet. */ | |
| 3918 struct display_block *db = get_display_block_from_line (dl, TEXT); | |
| 3919 int max_pixpos, min_pixpos, ypos_adj; | |
| 3920 Lisp_Object font_inst; | |
| 3921 | |
| 3922 /* This will actually determine incorrect inside boundaries for the | |
| 3923 modeline since it ignores the margins. However being aware of this fact | |
| 3924 we never use those values anywhere so it doesn't matter. */ | |
| 3925 dl->bounds = calculate_display_line_boundaries (w, 1); | |
| 3926 | |
| 3927 /* We are generating a modeline. */ | |
| 3928 dl->modeline = 1; | |
| 3929 dl->cursor_elt = -1; | |
| 3930 | |
| 3931 /* Reset the runes on the modeline. */ | |
| 3932 Dynarr_reset (db->runes); | |
| 3933 | |
| 3934 if (!WINDOW_HAS_MODELINE_P (w)) | |
| 3935 { | |
| 3936 struct rune rb; | |
| 3937 | |
| 3938 /* If there is a horizontal scrollbar, don't add anything. */ | |
| 3939 if (window_scrollbar_height (w)) | |
| 3940 return; | |
| 3941 | |
| 3942 dl->ascent = DEVMETH (d, divider_height, ()); | |
| 3943 dl->descent = 0; | |
| 3944 /* The modeline is at the bottom of the gutters. */ | |
| 3945 dl->ypos = WINDOW_BOTTOM (w); | |
| 3946 | |
| 3947 rb.findex = MODELINE_INDEX; | |
| 3948 rb.xpos = dl->bounds.left_out; | |
| 3949 rb.width = dl->bounds.right_out - dl->bounds.left_out; | |
| 826 | 3950 rb.charpos = 0; |
| 428 | 3951 rb.endpos = 0; |
| 3952 rb.type = RUNE_HLINE; | |
| 3953 rb.object.hline.thickness = 1; | |
| 3954 rb.object.hline.yoffset = 0; | |
| 3955 rb.cursor_type = NO_CURSOR; | |
| 3956 | |
| 3957 if (!EQ (Qzero, w->modeline_shadow_thickness) | |
| 3958 && FRAME_WIN_P (f)) | |
| 3959 { | |
| 3960 int shadow_thickness = MODELINE_SHADOW_THICKNESS (w); | |
| 3961 | |
| 3962 dl->ypos -= shadow_thickness; | |
| 3963 rb.xpos += shadow_thickness; | |
| 3964 rb.width -= 2 * shadow_thickness; | |
| 3965 } | |
| 3966 | |
| 3967 Dynarr_add (db->runes, rb); | |
| 3968 return; | |
| 3969 } | |
| 3970 | |
| 3971 /* !!#### not right; needs to compute the max height of | |
| 3972 all the charsets */ | |
| 3973 font_inst = WINDOW_FACE_CACHEL_FONT (w, MODELINE_INDEX, Vcharset_ascii); | |
| 3974 | |
| 3975 dl->ascent = XFONT_INSTANCE (font_inst)->ascent; | |
| 3976 dl->descent = XFONT_INSTANCE (font_inst)->descent; | |
| 3977 | |
| 3978 min_pixpos = dl->bounds.left_out; | |
| 3979 max_pixpos = dl->bounds.right_out; | |
| 3980 | |
| 3981 if (!EQ (Qzero, w->modeline_shadow_thickness) && FRAME_WIN_P (f)) | |
| 3982 { | |
| 3983 int shadow_thickness = MODELINE_SHADOW_THICKNESS (w); | |
| 3984 | |
| 3985 ypos_adj = shadow_thickness; | |
| 3986 min_pixpos += shadow_thickness; | |
| 3987 max_pixpos -= shadow_thickness; | |
| 3988 } | |
| 3989 else | |
| 3990 ypos_adj = 0; | |
| 3991 | |
| 3992 generate_formatted_string_db (b->modeline_format, | |
| 3993 b->generated_modeline_string, w, dl, db, | |
| 3994 MODELINE_INDEX, min_pixpos, max_pixpos, type); | |
| 3995 | |
| 3996 /* The modeline is at the bottom of the gutters. We have to wait to | |
| 3997 set this until we've generated the modeline in order to account | |
| 3998 for any embedded faces. */ | |
| 3999 dl->ypos = WINDOW_BOTTOM (w) - dl->descent - ypos_adj; | |
| 4000 } | |
| 4001 | |
| 4002 static Charcount | |
| 867 | 4003 add_string_to_fstring_db_runes (pos_data *data, const Ibyte *str, |
| 4187 | 4004 Charcount pos, Charcount min_pos, |
| 771 | 4005 Charcount max_pos) |
| 428 | 4006 { |
| 4007 /* This function has been Mule-ized. */ | |
| 4008 Charcount end; | |
| 867 | 4009 const Ibyte *cur_pos = str; |
| 428 | 4010 struct display_block *db = data->db; |
| 4011 | |
| 4012 data->blank_width = space_width (XWINDOW (data->window)); | |
| 4013 while (Dynarr_length (db->runes) < pos) | |
| 4014 add_blank_rune (data, NULL, 0); | |
| 4015 | |
| 4016 end = (Dynarr_length (db->runes) + | |
| 4187 | 4017 bytecount_to_charcount (str, strlen ((const char *) str))); |
| 428 | 4018 if (max_pos != -1) |
| 4019 end = min (max_pos, end); | |
| 4020 | |
| 4021 while (pos < end && *cur_pos) | |
| 4022 { | |
| 867 | 4023 const Ibyte *old_cur_pos = cur_pos; |
| 428 | 4024 int succeeded; |
| 4025 | |
| 867 | 4026 data->ch = itext_ichar (cur_pos); |
| 4027 succeeded = (add_ichar_rune (data) != ADD_FAILED); | |
| 4028 INC_IBYTEPTR (cur_pos); | |
| 428 | 4029 if (succeeded) |
| 4187 | 4030 { |
| 4031 pos++; | |
| 4032 data->modeline_charpos++; | |
| 4033 data->bytepos += cur_pos - old_cur_pos; | |
| 4034 } | |
| 428 | 4035 } |
| 4036 | |
| 4037 while (Dynarr_length (db->runes) < min_pos && | |
| 4187 | 4038 (data->pixpos + data->blank_width <= data->max_pixpos)) |
| 428 | 4039 add_blank_rune (data, NULL, 0); |
| 4040 | |
| 4041 return Dynarr_length (db->runes); | |
| 4042 } | |
| 4043 | |
| 4044 /* #### Urk! Should also handle begin-glyphs and end-glyphs in | |
| 4045 modeline extents. */ | |
| 4046 static Charcount | |
| 4047 add_glyph_to_fstring_db_runes (pos_data *data, Lisp_Object glyph, | |
| 4187 | 4048 Charcount pos, Charcount UNUSED (min_pos), |
| 438 | 4049 Charcount max_pos, Lisp_Object extent) |
| 428 | 4050 { |
| 4051 /* This function has been Mule-ized. */ | |
| 4052 Charcount end; | |
| 4053 struct display_block *db = data->db; | |
| 4054 struct glyph_block gb; | |
| 4055 | |
| 4056 data->blank_width = space_width (XWINDOW (data->window)); | |
| 4057 while (Dynarr_length (db->runes) < pos) | |
| 4058 add_blank_rune (data, NULL, 0); | |
| 4059 | |
| 4060 end = Dynarr_length (db->runes) + 1; | |
| 4061 if (max_pos != -1) | |
| 4062 end = min (max_pos, end); | |
| 4063 | |
| 4064 gb.glyph = glyph; | |
| 438 | 4065 gb.extent = extent; |
| 428 | 4066 add_glyph_rune (data, &gb, BEGIN_GLYPHS, 0, 0); |
| 4067 pos++; | |
| 4068 | |
| 4069 while (Dynarr_length (db->runes) < pos && | |
| 4187 | 4070 (data->pixpos + data->blank_width <= data->max_pixpos)) |
| 428 | 4071 add_blank_rune (data, NULL, 0); |
| 4072 | |
| 4073 return Dynarr_length (db->runes); | |
| 4074 } | |
| 4075 | |
| 4076 /* If max_pos is == -1, it is considered to be infinite. The same is | |
| 4077 true of max_pixsize. */ | |
| 4078 #define SET_CURRENT_MODE_CHARS_PIXSIZE \ | |
| 4079 if (Dynarr_length (data->db->runes)) \ | |
| 4080 cur_pixsize = data->pixpos - Dynarr_atp (data->db->runes, 0)->xpos; \ | |
| 4081 else \ | |
| 4082 cur_pixsize = 0; | |
| 4083 | |
| 4084 /* Note that this function does "positions" in terms of characters and | |
| 4085 not in terms of columns. This is necessary to make the formatting | |
| 4086 work correctly when proportional width fonts are used in the | |
| 4087 modeline. */ | |
| 4088 static Charcount | |
| 4089 generate_fstring_runes (struct window *w, pos_data *data, Charcount pos, | |
| 4187 | 4090 Charcount min_pos, Charcount max_pos, |
| 4091 Lisp_Object elt, int depth, int max_pixsize, | |
| 4092 face_index findex, int type, Charcount *offset, | |
| 438 | 4093 Lisp_Object cur_ext) |
| 428 | 4094 { |
| 4095 /* This function has been Mule-ized. */ | |
| 4096 /* #### The other losing things in this function are: | |
| 4097 | |
| 4098 -- C zero-terminated-string lossage. | |
| 4099 -- Non-printable characters should be converted into something | |
| 4187 | 4100 appropriate (e.g. ^F) instead of blindly being printed anyway. |
| 428 | 4101 */ |
| 4102 | |
| 4103 tail_recurse: | |
| 4104 if (depth > 10) | |
| 4105 goto invalid; | |
| 4106 | |
| 4107 depth++; | |
| 4108 | |
| 4109 if (STRINGP (elt)) | |
| 4110 { | |
| 4111 /* A string. Add to the display line and check for %-constructs | |
| 4187 | 4112 within it. */ |
| 428 | 4113 |
| 2552 | 4114 Ibyte *this_str = XSTRING_DATA (elt); |
| 4115 | |
| 4116 while ((pos < max_pos || max_pos == -1) && *this_str) | |
| 4187 | 4117 { |
| 4118 Ibyte *last = this_str; | |
| 4119 | |
| 4120 while (*this_str && *this_str != '%') | |
| 4121 this_str++; | |
| 4122 | |
| 4123 if (this_str != last) | |
| 4124 { | |
| 4125 /* No %-construct */ | |
| 4126 Charcount size = | |
| 2552 | 4127 bytecount_to_charcount (last, this_str - last); |
| 438 | 4128 |
| 4129 if (size <= *offset) | |
| 4130 *offset -= size; | |
| 4131 else | |
| 4132 { | |
| 4133 Charcount tmp_max = (max_pos == -1 ? pos + size - *offset : | |
| 4134 min (pos + size - *offset, max_pos)); | |
| 867 | 4135 const Ibyte *tmp_last = itext_n_addr (last, *offset); |
| 438 | 4136 |
| 4137 pos = add_string_to_fstring_db_runes (data, tmp_last, | |
| 4138 pos, pos, tmp_max); | |
| 4139 *offset = 0; | |
| 4140 } | |
| 4187 | 4141 } |
| 4142 else /* *this_str == '%' */ | |
| 4143 { | |
| 4144 Charcount spec_width = 0; | |
| 4145 | |
| 4146 this_str++; /* skip over '%' */ | |
| 4147 | |
| 4148 /* We can't allow -ve args due to the "%-" construct. | |
| 4149 * Argument specifies minwidth but not maxwidth | |
| 4150 * (maxwidth can be specified by | |
| 4151 * (<negative-number> . <stuff>) modeline elements) | |
| 4152 */ | |
| 4153 while (isdigit (*this_str)) | |
| 4154 { | |
| 4155 spec_width = spec_width * 10 + (*this_str - '0'); | |
| 4156 this_str++; | |
| 4157 } | |
| 4158 spec_width += pos; | |
| 4159 | |
| 4160 if (*this_str == 'M') | |
| 4161 { | |
| 4162 pos = generate_fstring_runes (w, data, pos, spec_width, | |
| 4163 max_pos, Vglobal_mode_string, | |
| 4164 depth, max_pixsize, findex, | |
| 4165 type, offset, cur_ext); | |
| 4166 } | |
| 4167 else if (*this_str == '-') | |
| 4168 { | |
| 4169 Charcount num_to_add; | |
| 4170 | |
| 4171 if (max_pixsize < 0) | |
| 4172 num_to_add = 0; | |
| 4173 else if (max_pos != -1) | |
| 4174 num_to_add = max_pos - pos; | |
| 4175 else | |
| 4176 { | |
| 4177 int cur_pixsize; | |
| 4178 int dash_pixsize; | |
| 4179 Ibyte ch = '-'; | |
| 4180 SET_CURRENT_MODE_CHARS_PIXSIZE; | |
| 4181 | |
| 4182 dash_pixsize = | |
|
4815
6540302eedf5
Fix query_string_geometry lookup domain
Didier Verna <didier@lrde.epita.fr>
parents:
4528
diff
changeset
|
4183 redisplay_window_text_width_string |
|
6540302eedf5
Fix query_string_geometry lookup domain
Didier Verna <didier@lrde.epita.fr>
parents:
4528
diff
changeset
|
4184 (w, findex, &ch, Qnil, 0, 1); |
| 4187 | 4185 |
| 4186 if (dash_pixsize == 0) | |
| 3094 | 4187 num_to_add = 0; |
| 4188 else { | |
| 4189 num_to_add = (max_pixsize - cur_pixsize) / dash_pixsize; | |
| 4190 num_to_add++; | |
| 4191 } | |
| 4187 | 4192 } |
| 4193 | |
| 4194 while (num_to_add--) | |
| 4195 pos = add_string_to_fstring_db_runes | |
| 4196 (data, (const Ibyte *) "-", pos, pos, max_pos); | |
| 4197 } | |
| 4198 else if (*this_str != 0) | |
| 4199 { | |
| 4200 Ichar ch = itext_ichar (this_str); | |
| 4201 Ibyte *str; | |
| 438 | 4202 Charcount size; |
| 4203 | |
| 4187 | 4204 decode_mode_spec (w, ch, type); |
| 4205 | |
| 4206 str = Dynarr_atp (mode_spec_ibyte_string, 0); | |
| 438 | 4207 size = bytecount_to_charcount |
| 4208 /* Skip the null character added by `decode_mode_spec' */ | |
| 867 | 4209 (str, Dynarr_length (mode_spec_ibyte_string)) - 1; |
| 438 | 4210 |
| 4211 if (size <= *offset) | |
| 4212 *offset -= size; | |
| 4213 else | |
| 4214 { | |
| 867 | 4215 const Ibyte *tmp_str = itext_n_addr (str, *offset); |
| 438 | 4216 |
| 440 | 4217 /* #### NOTE: I don't understand why a tmp_max is not |
| 438 | 4218 computed and used here as in the plain string case |
| 4219 above. -- dv */ | |
| 4220 pos = add_string_to_fstring_db_runes (data, tmp_str, | |
| 4221 pos, pos, | |
| 4222 max_pos); | |
| 4223 *offset = 0; | |
| 4224 } | |
| 4187 | 4225 } |
| 4226 | |
| 4227 /* NOT this_str++. There could be any sort of character at | |
| 4228 the current position. */ | |
| 4229 INC_IBYTEPTR (this_str); | |
| 4230 } | |
| 4231 | |
| 4232 if (max_pixsize > 0) | |
| 4233 { | |
| 4234 int cur_pixsize; | |
| 4235 SET_CURRENT_MODE_CHARS_PIXSIZE; | |
| 4236 | |
| 4237 if (cur_pixsize >= max_pixsize) | |
| 4238 break; | |
| 4239 } | |
| 4240 } | |
| 428 | 4241 } |
| 4242 else if (SYMBOLP (elt)) | |
| 4243 { | |
| 4244 /* A symbol: process the value of the symbol recursively | |
| 4187 | 4245 as if it appeared here directly. */ |
| 428 | 4246 Lisp_Object tem = symbol_value_in_buffer (elt, w->buffer); |
| 4247 | |
| 4248 if (!UNBOUNDP (tem)) | |
| 4187 | 4249 { |
| 438 | 4250 /* If value is a string, output that string literally: |
| 4187 | 4251 don't check for % within it. */ |
| 4252 if (STRINGP (tem)) | |
| 4253 { | |
| 867 | 4254 Ibyte *str = XSTRING_DATA (tem); |
| 826 | 4255 Charcount size = string_char_length (tem); |
| 438 | 4256 |
| 4257 if (size <= *offset) | |
| 4258 *offset -= size; | |
| 4259 else | |
| 4260 { | |
| 867 | 4261 const Ibyte *tmp_str = itext_n_addr (str, *offset); |
| 438 | 4262 |
| 440 | 4263 /* #### NOTE: I don't understand why a tmp_max is not |
| 438 | 4264 computed and used here as in the plain string case |
| 4265 above. -- dv */ | |
| 4266 pos = add_string_to_fstring_db_runes (data, tmp_str, pos, | |
| 4267 min_pos, max_pos); | |
| 4268 *offset = 0; | |
| 4269 } | |
| 4187 | 4270 } |
| 4271 /* Give up right away for nil or t. */ | |
| 4272 else if (!EQ (tem, elt)) | |
| 4273 { | |
| 4274 elt = tem; | |
| 4275 goto tail_recurse; | |
| 4276 } | |
| 4277 } | |
| 428 | 4278 } |
| 4279 else if (GENERIC_SPECIFIERP (elt)) | |
| 4280 { | |
| 4281 Lisp_Object window, tem; | |
| 793 | 4282 window = wrap_window (w); |
| 428 | 4283 tem = specifier_instance_no_quit (elt, Qunbound, window, |
| 793 | 4284 ERROR_ME_DEBUG_WARN, 0, Qzero); |
| 428 | 4285 if (!UNBOUNDP (tem)) |
| 4286 { | |
| 4287 elt = tem; | |
| 4288 goto tail_recurse; | |
| 4289 } | |
| 4290 } | |
| 4291 else if (CONSP (elt)) | |
| 4292 { | |
| 4293 /* A cons cell: four distinct cases. | |
| 438 | 4294 * - If first element is a string or a cons, process all the elements |
| 4295 * and effectively concatenate them. | |
| 4296 * - If first element is a negative number, truncate displaying cdr to | |
| 4297 * at most that many characters. If positive, pad (with spaces) | |
| 4298 * to at least that many characters. | |
| 771 | 4299 * - If first element is another symbol or a boolean specifier, process |
| 4300 * the cadr or caddr recursively according to whether the symbol's | |
| 4301 * value or specifier's instance is non-nil or nil. | |
| 4302 * - If first element is , process the cadr or caddr | |
| 4303 * recursively according to whether the instance of the specifier in | |
| 4304 * the modeline's window is non-nil or nil. | |
| 442 | 4305 * - If first element is an extent, process the cdr recursively |
| 4306 * and handle the extent's face. | |
| 428 | 4307 */ |
| 438 | 4308 |
| 428 | 4309 Lisp_Object car, tem; |
| 4310 | |
| 4311 car = XCAR (elt); | |
| 771 | 4312 if (SYMBOLP (car) || BOOLEAN_SPECIFIERP (car)) |
| 438 | 4313 { |
| 4314 elt = XCDR (elt); | |
| 4315 if (!CONSP (elt)) | |
| 4316 goto invalid; | |
| 4317 | |
| 771 | 4318 if (SYMBOLP (car)) |
| 4319 tem = symbol_value_in_buffer (car, w->buffer); | |
| 4320 else | |
| 4321 tem = specifier_instance_no_quit (car, Qunbound, wrap_window (w), | |
| 793 | 4322 ERROR_ME_DEBUG_WARN, 0, Qzero); |
| 438 | 4323 /* elt is now the cdr, and we know it is a cons cell. |
| 4324 Use its car if CAR has a non-nil value. */ | |
| 771 | 4325 if (!UNBOUNDP (tem) && !NILP (tem)) |
| 438 | 4326 { |
| 771 | 4327 elt = XCAR (elt); |
| 4328 goto tail_recurse; | |
| 438 | 4329 } |
| 771 | 4330 /* Symbol's value or specifier's instance is nil or unbound |
| 438 | 4331 * Get the cddr of the original list |
| 4332 * and if possible find the caddr and use that. | |
| 4333 */ | |
| 4334 elt = XCDR (elt); | |
| 4335 if (NILP (elt)) | |
| 4336 ; | |
| 4337 else if (!CONSP (elt)) | |
| 4338 goto invalid; | |
| 4339 else | |
| 4340 { | |
| 4341 elt = XCAR (elt); | |
| 4342 goto tail_recurse; | |
| 4343 } | |
| 4344 } | |
| 428 | 4345 else if (INTP (car)) |
| 4187 | 4346 { |
| 4347 Charcount lim = XINT (car); | |
| 4348 | |
| 4349 elt = XCDR (elt); | |
| 4350 | |
| 4351 if (lim < 0) | |
| 4352 { | |
| 4353 /* Negative int means reduce maximum width. | |
| 4354 * DO NOT change MIN_PIXPOS here! | |
| 4355 * (20 -10 . foo) should truncate foo to 10 col | |
| 4356 * and then pad to 20. | |
| 4357 */ | |
| 4358 if (max_pos == -1) | |
| 4359 max_pos = pos - lim; | |
| 4360 else | |
| 4361 max_pos = min (max_pos, pos - lim); | |
| 4362 } | |
| 4363 else if (lim > 0) | |
| 4364 { | |
| 4365 /* Padding specified. Don't let it be more than | |
| 4366 * current maximum. | |
| 4367 */ | |
| 4368 lim += pos; | |
| 4369 if (max_pos != -1 && lim > max_pos) | |
| 4370 lim = max_pos; | |
| 4371 /* If that's more padding than already wanted, queue it. | |
| 4372 * But don't reduce padding already specified even if | |
| 4373 * that is beyond the current truncation point. | |
| 4374 */ | |
| 4375 if (lim > min_pos) | |
| 4376 min_pos = lim; | |
| 4377 } | |
| 4378 goto tail_recurse; | |
| 4379 } | |
| 428 | 4380 else if (STRINGP (car) || CONSP (car)) |
| 4187 | 4381 { |
| 4382 int limit = 50; | |
| 4383 | |
| 4384 /* LIMIT is to protect against circular lists. */ | |
| 4385 while (CONSP (elt) && --limit > 0 | |
| 4386 && (pos < max_pos || max_pos == -1)) | |
| 4387 { | |
| 4388 pos = generate_fstring_runes (w, data, pos, pos, max_pos, | |
| 4389 XCAR (elt), depth, max_pixsize, | |
| 438 | 4390 findex, type, offset, cur_ext); |
| 4187 | 4391 elt = XCDR (elt); |
| 4392 } | |
| 4393 } | |
| 428 | 4394 else if (EXTENTP (car)) |
| 4187 | 4395 { |
| 4396 struct extent *ext = XEXTENT (car); | |
| 4397 | |
| 4398 if (EXTENT_LIVE_P (ext)) | |
| 4399 { | |
| 4400 face_index old_findex = data->findex; | |
| 4401 Lisp_Object face; | |
| 4402 Lisp_Object font_inst; | |
| 4403 face_index new_findex; | |
| 4404 Bytecount start = data->bytepos; | |
| 4405 | |
| 4406 face = extent_face (ext); | |
| 4407 if (FACEP (face)) | |
| 4408 { | |
| 4409 /* #### needs to merge faces, sigh */ | |
| 4410 /* #### needs to handle list of faces */ | |
| 4411 new_findex = get_builtin_face_cache_index (w, face); | |
| 4412 /* !!#### not right; needs to compute the max height of | |
| 4413 all the charsets */ | |
| 4414 font_inst = WINDOW_FACE_CACHEL_FONT (w, new_findex, | |
| 4415 Vcharset_ascii); | |
| 4416 | |
| 4417 data->dl->ascent = max (data->dl->ascent, | |
| 4418 XFONT_INSTANCE (font_inst)->ascent); | |
| 4419 data->dl->descent = max (data->dl->descent, | |
| 4420 XFONT_INSTANCE (font_inst)-> | |
| 4421 descent); | |
| 4422 } | |
| 4423 else | |
| 4424 new_findex = old_findex; | |
| 4425 | |
| 4426 data->findex = new_findex; | |
| 4427 pos = generate_fstring_runes (w, data, pos, pos, max_pos, | |
| 4428 XCDR (elt), depth - 1, | |
| 438 | 4429 max_pixsize, new_findex, type, |
| 4430 offset, car); | |
| 4187 | 4431 data->findex = old_findex; |
| 4432 Dynarr_add (formatted_string_extent_dynarr, ext); | |
| 4433 Dynarr_add (formatted_string_extent_start_dynarr, start); | |
| 4434 Dynarr_add (formatted_string_extent_end_dynarr, data->bytepos); | |
| 4435 } | |
| 4436 } | |
| 428 | 4437 } |
| 4438 else if (GLYPHP (elt)) | |
| 4439 { | |
| 438 | 4440 /* Glyphs are considered as one character with respect to the modeline |
| 4441 horizontal scrolling facility. -- dv */ | |
| 4442 if (*offset > 0) | |
| 4443 *offset -= 1; | |
| 4444 else | |
| 4445 pos = add_glyph_to_fstring_db_runes (data, elt, pos, pos, max_pos, | |
| 4446 cur_ext); | |
| 428 | 4447 } |
| 4448 else | |
| 4449 { | |
| 4450 invalid: | |
| 438 | 4451 { |
|
4528
726060ee587c
First draft of g++ 4.3 warning removal patch. Builds. *Needs ChangeLogs.*
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4522
diff
changeset
|
4452 const char *str = GETTEXT ("*invalid*"); |
| 438 | 4453 Charcount size = (Charcount) strlen (str); /* is this ok ?? -- dv */ |
| 4454 | |
| 4455 if (size <= *offset) | |
| 4456 *offset -= size; | |
| 4457 else | |
| 4458 { | |
| 867 | 4459 const Ibyte *tmp_str = |
| 4460 itext_n_addr ((const Ibyte *) str, *offset); | |
| 438 | 4461 |
| 440 | 4462 /* #### NOTE: I don't understand why a tmp_max is not computed and |
| 438 | 4463 used here as in the plain string case above. -- dv */ |
| 4464 pos = add_string_to_fstring_db_runes (data, tmp_str, pos, | |
| 4465 min_pos, max_pos); | |
| 4466 *offset = 0; | |
| 4467 } | |
| 4468 } | |
| 428 | 4469 } |
| 4470 | |
| 4471 if (min_pos > pos) | |
| 4472 { | |
| 867 | 4473 add_string_to_fstring_db_runes (data, (const Ibyte *) "", pos, |
| 438 | 4474 min_pos, -1); |
| 428 | 4475 } |
| 4476 | |
| 4477 return pos; | |
| 4478 } | |
| 4479 | |
| 4480 /* Update just the modeline. Assumes the desired display structs. If | |
| 4481 they do not have a modeline block, it does nothing. */ | |
| 4482 static void | |
| 4483 regenerate_modeline (struct window *w) | |
| 4484 { | |
| 4485 display_line_dynarr *dla = window_display_lines (w, DESIRED_DISP); | |
| 4486 | |
| 4487 if (!Dynarr_length (dla) || !Dynarr_atp (dla, 0)->modeline) | |
| 4488 return; | |
| 4489 else | |
| 4490 { | |
| 4491 generate_modeline (w, Dynarr_atp (dla, 0), DESIRED_DISP); | |
| 4492 redisplay_update_line (w, 0, 0, 0); | |
| 4493 } | |
| 4494 } | |
| 4495 | |
| 4496 /* Make sure that modeline display line is present in the given | |
| 4497 display structs if the window has a modeline and update that | |
| 4498 line. Returns true if a modeline was needed. */ | |
| 4499 static int | |
| 4500 ensure_modeline_generated (struct window *w, int type) | |
| 4501 { | |
| 4502 int need_modeline; | |
| 4503 | |
| 4504 /* minibuffer windows don't have modelines */ | |
| 4505 if (MINI_WINDOW_P (w)) | |
| 4506 need_modeline = 0; | |
| 4507 /* windows which haven't had it turned off do */ | |
| 4508 else if (WINDOW_HAS_MODELINE_P (w)) | |
| 4509 need_modeline = 1; | |
| 4510 /* windows which have it turned off don't have a divider if there is | |
| 4511 a horizontal scrollbar */ | |
| 4512 else if (window_scrollbar_height (w)) | |
| 4513 need_modeline = 0; | |
| 4514 /* and in this case there is none */ | |
| 4515 else | |
| 4516 need_modeline = 1; | |
| 4517 | |
| 4518 if (need_modeline) | |
| 4519 { | |
| 4520 display_line_dynarr *dla; | |
| 4521 | |
| 4522 dla = window_display_lines (w, type); | |
| 4523 | |
| 4524 /* We don't care if there is a display line which is not | |
| 4187 | 4525 currently a modeline because it is definitely going to become |
| 4526 one if we have gotten to this point. */ | |
| 428 | 4527 if (Dynarr_length (dla) == 0) |
| 4528 { | |
| 4529 if (Dynarr_largest (dla) > 0) | |
| 800 | 4530 Dynarr_increment (dla); |
| 428 | 4531 else |
| 4532 { | |
| 4533 struct display_line modeline; | |
| 4207 | 4534 |
| 4535 DISPLAY_LINE_INIT (modeline); | |
| 428 | 4536 Dynarr_add (dla, modeline); |
| 4537 } | |
| 4538 } | |
| 4539 | |
| 4540 /* If we're adding a new place marker go ahead and generate the | |
| 4187 | 4541 modeline so that it is available for use by |
| 4542 window_modeline_height. */ | |
| 428 | 4543 generate_modeline (w, Dynarr_atp (dla, 0), type); |
| 4544 } | |
| 4545 | |
| 4546 return need_modeline; | |
| 4547 } | |
| 4548 | |
| 4549 /* #### Kludge or not a kludge. I tend towards the former. */ | |
| 4550 int | |
| 4551 real_current_modeline_height (struct window *w) | |
| 4552 { | |
| 4553 Fset_marker (w->start[CMOTION_DISP], w->start[CURRENT_DISP], w->buffer); | |
| 4554 Fset_marker (w->pointm[CMOTION_DISP], w->pointm[CURRENT_DISP], w->buffer); | |
| 4555 | |
| 4556 if (ensure_modeline_generated (w, CMOTION_DISP)) | |
| 4557 { | |
| 4558 display_line_dynarr *dla = window_display_lines (w, CMOTION_DISP); | |
| 4559 | |
| 4560 if (Dynarr_length (dla)) | |
| 4561 { | |
| 4562 if (Dynarr_atp (dla, 0)->modeline) | |
| 4563 return (Dynarr_atp (dla, 0)->ascent + | |
| 4564 Dynarr_atp (dla, 0)->descent); | |
| 4565 } | |
| 4566 } | |
| 4567 return 0; | |
| 4568 } | |
| 4569 | |
| 4570 | |
| 4571 /***************************************************************************/ | |
| 819 | 4572 /* */ |
| 826 | 4573 /* displayable string routines */ |
| 819 | 4574 /* */ |
| 428 | 4575 /***************************************************************************/ |
| 4576 | |
| 4577 /* Given a position for a string in a window, ensure that the given | |
| 4578 display line DL accurately represents the text on a line starting | |
| 4579 at the given position. | |
| 4580 | |
| 4581 Yes, this is duplicating the code of create_text_block, but it | |
| 4582 looked just too hard to change create_text_block to handle strings | |
| 4583 *and* buffers. We already make a distinction between the two | |
| 4584 elsewhere in the code so I think unifying them would require a | |
| 4585 complete MULE rewrite. Besides, the other distinction is that these | |
| 4586 functions cover text that the user *cannot edit* so we can remove | |
| 4587 everything to do with cursors, minibuffers etc. Eventually the | |
| 4588 modeline routines should be modified to use this code as it copes | |
| 4589 with many more types of display situation. */ | |
| 4590 | |
| 665 | 4591 static Charbpos |
| 428 | 4592 create_string_text_block (struct window *w, Lisp_Object disp_string, |
| 4593 struct display_line *dl, | |
| 826 | 4594 Charcount start_pos, |
| 428 | 4595 prop_block_dynarr **prop, |
| 4596 face_index default_face) | |
| 4597 { | |
| 4598 struct frame *f = XFRAME (w->frame); | |
| 4599 /* Note that a lot of the buffer controlled stuff has been left in | |
| 4600 because you might well want to make use of it (selective display | |
| 4601 etc), its just the buffer text that we do not use. However, it | |
| 4602 seems to be possible for buffer to be nil sometimes so protect | |
| 4603 against this case. */ | |
| 4604 struct buffer *b = BUFFERP (w->buffer) ? XBUFFER (w->buffer) : 0; | |
| 4605 struct device *d = XDEVICE (f->device); | |
| 4606 | |
| 4607 /* we're working with these a lot so precalculate them */ | |
| 4608 Bytecount slen = XSTRING_LENGTH (disp_string); | |
| 826 | 4609 Bytecount byte_string_zv = slen; |
| 4610 Bytecount byte_start_pos = string_index_char_to_byte (disp_string, start_pos); | |
| 428 | 4611 |
| 4612 pos_data data; | |
| 4613 | |
| 4614 int truncate_win = b ? window_truncation_on (w) : 0; | |
| 4615 | |
| 442 | 4616 /* We're going to ditch selective display for static text, it's an |
| 4617 FSF thing and invisible extents are the way to go here. | |
| 4618 Implementing it also relies on a number of buffer-specific | |
| 428 | 4619 functions that we don't have the luxury of being able to use |
| 4620 here. */ | |
| 4621 | |
| 4622 /* The variable ctl-arrow allows the user to specify what characters | |
| 4623 can actually be displayed and which octal should be used for. | |
| 4624 #### This variable should probably have some rethought done to | |
| 4625 it. | |
| 4626 | |
| 4627 #### It would also be really nice if you could specify that | |
| 4628 the characters come out in hex instead of in octal. Mule | |
| 4629 does that by adding a ctl-hexa variable similar to ctl-arrow, | |
| 4630 but that's bogus -- we need a more general solution. I | |
| 4631 think you need to extend the concept of display tables | |
| 4632 into a more general conversion mechanism. Ideally you | |
| 4633 could specify a Lisp function that converts characters, | |
| 4634 but this violates the Second Golden Rule and besides would | |
| 4635 make things way way way way slow. | |
| 4636 | |
| 4637 So instead, we extend the display-table concept, which was | |
| 4638 historically limited to 256-byte vectors, to one of the | |
| 4639 following: | |
| 4640 | |
| 4641 a) A 256-entry vector, for backward compatibility; | |
| 4642 b) char-table, mapping characters to values; | |
| 4643 c) range-table, mapping ranges of characters to values; | |
| 4644 d) a list of the above. | |
| 4645 | |
| 4646 The (d) option allows you to specify multiple display tables | |
| 4647 instead of just one. Each display table can specify conversions | |
| 4648 for some characters and leave others unchanged. The way the | |
| 4649 character gets displayed is determined by the first display table | |
| 4650 with a binding for that character. This way, you could call a | |
| 4651 function `enable-hex-display' that adds a hex display-table to | |
| 4652 the list of display tables for the current buffer. | |
| 4653 | |
| 4654 #### ...not yet implemented... Also, we extend the concept of | |
| 4655 "mapping" to include a printf-like spec. Thus you can make all | |
| 4656 extended characters show up as hex with a display table like | |
| 4657 this: | |
| 4658 | |
| 4187 | 4659 #s(range-table data ((256 524288) (format "%x"))) |
| 428 | 4660 |
| 4661 Since more than one display table is possible, you have | |
| 4662 great flexibility in mapping ranges of characters. */ | |
| 867 | 4663 Ichar printable_min = b ? (CHAR_OR_CHAR_INTP (b->ctl_arrow) |
| 428 | 4664 ? XCHAR_OR_CHAR_INT (b->ctl_arrow) |
| 4665 : ((EQ (b->ctl_arrow, Qt) || EQ (b->ctl_arrow, Qnil)) | |
| 4666 ? 255 : 160)) : 255; | |
| 4667 | |
| 4668 Lisp_Object face_dt, window_dt; | |
| 4669 | |
| 4670 /* The text display block for this display line. */ | |
| 4671 struct display_block *db = get_display_block_from_line (dl, TEXT); | |
| 4672 | |
| 4673 /* The first time through the main loop we need to force the glyph | |
| 4674 data to be updated. */ | |
| 4675 int initial = 1; | |
| 4676 | |
| 4677 /* Apparently the new extent_fragment_update returns an end position | |
| 4678 equal to the position passed in if there are no more runs to be | |
| 4679 displayed. */ | |
| 4680 int no_more_frags = 0; | |
| 4681 | |
| 4682 dl->used_prop_data = 0; | |
| 4683 dl->num_chars = 0; | |
| 442 | 4684 dl->line_continuation = 0; |
| 428 | 4685 |
| 4187 | 4686 /* Set up faces to use for clearing areas, used by output_display_line. */ |
| 428 | 4687 dl->default_findex = default_face; |
| 4187 | 4688 if (default_face > DEFAULT_INDEX) |
| 428 | 4689 { |
| 4690 dl->left_margin_findex = default_face; | |
| 4691 dl->right_margin_findex = default_face; | |
| 4692 } | |
| 4693 else | |
| 4694 { | |
| 434 | 4695 dl->left_margin_findex = |
| 428 | 4696 get_builtin_face_cache_index (w, Vleft_margin_face); |
| 434 | 4697 dl->right_margin_findex = |
| 428 | 4698 get_builtin_face_cache_index (w, Vright_margin_face); |
| 4699 } | |
| 4700 | |
| 4701 xzero (data); | |
| 4702 data.ef = extent_fragment_new (disp_string, f); | |
| 4703 | |
| 4704 /* These values are used by all of the rune addition routines. We add | |
| 4705 them to this structure for ease of passing. */ | |
| 4706 data.d = d; | |
| 793 | 4707 data.window = wrap_window (w); |
| 428 | 4708 data.db = db; |
| 4709 data.dl = dl; | |
| 4710 | |
| 826 | 4711 data.byte_charpos = byte_start_pos; |
| 428 | 4712 data.pixpos = dl->bounds.left_in; |
| 4713 data.last_charset = Qunbound; | |
| 4714 data.last_findex = default_face; | |
| 4715 data.result_str = Qnil; | |
| 4716 data.string = disp_string; | |
| 4717 | |
| 4718 /* Set the right boundary adjusting it to take into account any end | |
| 4719 glyph. Save the width of the end glyph for later use. */ | |
| 4720 data.max_pixpos = dl->bounds.right_in; | |
| 819 | 4721 data.max_pixpos -= data.end_glyph_width; |
| 428 | 4722 |
| 4723 data.cursor_type = NO_CURSOR; | |
| 4724 data.cursor_x = -1; | |
| 4725 | |
| 4726 data.start_col = 0; | |
| 4727 /* I don't think we want this, string areas should not scroll with | |
| 434 | 4728 the window |
| 428 | 4729 data.start_col = w->hscroll; |
| 826 | 4730 data.byte_start_col_enabled = (w->hscroll ? byte_start_pos : 0); |
| 428 | 4731 */ |
| 826 | 4732 data.byte_start_col_enabled = 0; |
| 428 | 4733 data.hscroll_glyph_width_adjust = 0; |
| 4734 | |
| 4735 /* We regenerate the line from the very beginning. */ | |
| 4736 Dynarr_reset (db->runes); | |
| 4737 | |
| 4738 /* Why is this less than or equal and not just less than? If the | |
| 4739 starting position is already equal to the maximum we can't add | |
| 4740 anything else, right? Wrong. We might still have a newline to | |
| 4741 add. A newline can use the room allocated for an end glyph since | |
| 4742 if we add it we know we aren't going to be adding any end | |
| 4743 glyph. */ | |
| 4744 | |
| 4745 /* #### Chuck -- I think this condition should be while (1). | |
| 4746 Otherwise if (e.g.) there is one begin-glyph and one end-glyph | |
| 4747 and the begin-glyph ends exactly at the end of the window, the | |
| 4748 end-glyph and text might not be displayed. while (1) ensures | |
| 4749 that the loop terminates only when either (a) there is | |
| 4750 propagation data or (b) the end-of-line or end-of-buffer is hit. | |
| 4751 | |
| 4752 #### Also I think you need to ensure that the operation | |
| 4753 "add begin glyphs; add end glyphs; add text" is atomic and | |
| 4754 can't get interrupted in the middle. If you run off the end | |
| 4755 of the line during that operation, then you keep accumulating | |
| 4756 propagation data until you're done. Otherwise, if the (e.g.) | |
| 4757 there's a begin glyph at a particular position and attempting | |
| 4758 to display that glyph results in window-end being hit and | |
| 4759 propagation data being generated, then the character at that | |
| 4760 position won't be displayed. | |
| 4761 | |
| 4762 #### See also the comment after the end of this loop, below. | |
| 4763 */ | |
| 4764 while (data.pixpos <= data.max_pixpos) | |
| 4765 { | |
| 4766 /* #### This check probably should not be necessary. */ | |
| 826 | 4767 if (data.byte_charpos > byte_string_zv) |
| 428 | 4768 { |
| 4769 /* #### urk! More of this lossage! */ | |
| 826 | 4770 data.byte_charpos--; |
| 428 | 4771 goto done; |
| 4772 } | |
| 4773 | |
| 4774 /* Check for face changes. */ | |
| 826 | 4775 if (initial || (!no_more_frags && data.byte_charpos == data.ef->end)) |
| 428 | 4776 { |
| 819 | 4777 Lisp_Object last_glyph = Qnil; |
| 4778 /* Deal with clipped glyphs that we have already displayed. */ | |
| 4187 | 4779 if (*prop && Dynarr_atp (*prop, 0)->type == PROP_GLYPH) |
| 819 | 4780 { |
| 4781 last_glyph = Dynarr_atp (*prop, 0)->data.p_glyph.glyph; | |
| 4782 Dynarr_free (*prop); | |
| 4783 *prop = 0; | |
| 4784 } | |
| 428 | 4785 /* Now compute the face and begin/end-glyph information. */ |
| 4786 data.findex = | |
| 793 | 4787 /* Remember that the extent-fragment routines deal in |
| 4187 | 4788 Bytexpos's. */ |
| 826 | 4789 extent_fragment_update (w, data.ef, data.byte_charpos, last_glyph); |
| 428 | 4790 /* This is somewhat cheesy but the alternative is to |
| 4187 | 4791 propagate default_face into extent_fragment_update. */ |
| 428 | 4792 if (data.findex == DEFAULT_INDEX) |
| 4793 data.findex = default_face; | |
| 4794 | |
| 4795 get_display_tables (w, data.findex, &face_dt, &window_dt); | |
| 4796 | |
| 826 | 4797 if (data.byte_charpos == data.ef->end) |
| 428 | 4798 no_more_frags = 1; |
| 4799 } | |
| 4800 initial = 0; | |
| 4801 | |
| 4802 /* Determine what is next to be displayed. We first handle any | |
| 4187 | 4803 glyphs returned by glyphs_at_charbpos. If there are no glyphs to |
| 4804 display then we determine what to do based on the character at the | |
| 4805 current buffer position. */ | |
| 428 | 4806 |
| 4807 /* If the current position is covered by an invisible extent, do | |
| 4187 | 4808 nothing (except maybe add some ellipses). |
| 428 | 4809 |
| 4810 #### The behavior of begin and end-glyphs at the edge of an | |
| 4811 invisible extent should be investigated further. This is | |
| 4812 fairly low priority though. */ | |
| 4813 if (data.ef->invisible) | |
| 4814 { | |
| 4815 /* #### Chuck, perhaps you could look at this code? I don't | |
| 4816 really know what I'm doing. */ | |
| 4817 if (*prop) | |
| 4818 { | |
| 4819 Dynarr_free (*prop); | |
| 4820 *prop = 0; | |
| 4821 } | |
| 4822 | |
| 4823 /* The extent fragment code only sets this when we should | |
| 4824 really display the ellipses. It makes sure the ellipses | |
| 4825 don't get displayed more than once in a row. */ | |
| 4826 if (data.ef->invisible_ellipses) | |
| 4827 { | |
| 4828 struct glyph_block gb; | |
| 4829 | |
| 4830 data.ef->invisible_ellipses_already_displayed = 1; | |
| 4831 data.ef->invisible_ellipses = 0; | |
| 4832 gb.extent = Qnil; | |
| 4833 gb.glyph = Vinvisible_text_glyph; | |
| 4834 *prop = add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0, | |
| 4835 GLYPH_CACHEL (w, INVIS_GLYPH_INDEX)); | |
| 4836 /* Perhaps they shouldn't propagate if the very next thing | |
| 4837 is to display a newline (for compatibility with | |
| 4838 selective-display-ellipses)? Maybe that's too | |
| 4839 abstruse. */ | |
| 4840 if (*prop) | |
| 4841 goto done; | |
| 4842 } | |
| 4843 | |
| 638 | 4844 /* #### What if we're dealing with a display table? */ |
| 428 | 4845 if (data.start_col) |
| 4846 data.start_col--; | |
| 4847 | |
| 826 | 4848 if (data.byte_charpos == byte_string_zv) |
| 428 | 4849 goto done; |
| 4850 else | |
| 826 | 4851 INC_BYTECOUNT (XSTRING_DATA (disp_string), data.byte_charpos); |
| 428 | 4852 } |
| 4853 | |
| 4854 /* If there is propagation data, then it represents the current | |
| 4187 | 4855 buffer position being displayed. Add them and advance the |
| 4856 position counter. This might also add the minibuffer | |
| 4857 prompt. */ | |
| 428 | 4858 else if (*prop) |
| 4859 { | |
| 4860 dl->used_prop_data = 1; | |
| 4861 *prop = add_propagation_runes (prop, &data); | |
| 4862 | |
| 4863 if (*prop) | |
| 4864 goto done; /* gee, a really narrow window */ | |
| 826 | 4865 else if (data.byte_charpos == byte_string_zv) |
| 428 | 4866 goto done; |
| 826 | 4867 else if (data.byte_charpos < 0) |
| 428 | 4868 /* #### urk urk urk! Aborts are not very fun! Fix this please! */ |
| 826 | 4869 data.byte_charpos = 0; |
| 428 | 4870 else |
| 826 | 4871 INC_BYTECOUNT (XSTRING_DATA (disp_string), data.byte_charpos); |
| 428 | 4872 } |
| 4873 | |
| 4874 /* If there are end glyphs, add them to the line. These are | |
| 4875 the end glyphs for the previous run of text. We add them | |
| 4876 here rather than doing them at the end of handling the | |
| 4877 previous run so that glyphs at the beginning and end of | |
| 4878 a line are handled correctly. */ | |
| 4879 else if (Dynarr_length (data.ef->end_glyphs) > 0) | |
| 4880 { | |
| 867 | 4881 data.ch = string_ichar (disp_string, data.byte_charpos); |
| 428 | 4882 *prop = add_glyph_runes (&data, END_GLYPHS); |
| 819 | 4883 |
| 4884 if (*prop) { | |
| 428 | 4885 goto done; |
| 819 | 4886 } |
| 428 | 4887 } |
| 4888 | |
| 4889 /* If there are begin glyphs, add them to the line. */ | |
| 4890 else if (Dynarr_length (data.ef->begin_glyphs) > 0) | |
| 4891 { | |
| 867 | 4892 data.ch = string_ichar (disp_string, data.byte_charpos); |
| 428 | 4893 *prop = add_glyph_runes (&data, BEGIN_GLYPHS); |
| 819 | 4894 |
| 4895 if (*prop) { | |
| 428 | 4896 goto done; |
| 819 | 4897 } |
| 428 | 4898 } |
| 4899 | |
| 4900 /* If at end-of-buffer, we've already processed begin and | |
| 4901 end-glyphs at this point and there's no text to process, | |
| 4902 so we're done. */ | |
| 826 | 4903 else if (data.byte_charpos == byte_string_zv) |
| 428 | 4904 goto done; |
| 4905 | |
| 4906 else | |
| 4907 { | |
| 4908 Lisp_Object entry = Qnil; | |
| 4909 /* Get the character at the current buffer position. */ | |
| 867 | 4910 data.ch = string_ichar (disp_string, data.byte_charpos); |
| 428 | 4911 if (!NILP (face_dt) || !NILP (window_dt)) |
| 4912 entry = display_table_entry (data.ch, face_dt, window_dt); | |
| 4913 | |
| 4914 /* If there is a display table entry for it, hand it off to | |
| 4187 | 4915 add_disp_table_entry_runes and let it worry about it. */ |
| 428 | 4916 if (!NILP (entry) && !EQ (entry, make_char (data.ch))) |
| 4917 { | |
| 4918 *prop = add_disp_table_entry_runes (&data, entry); | |
| 4919 | |
| 4920 if (*prop) | |
| 4921 goto done; | |
| 4922 } | |
| 4923 | |
| 4924 /* Check if we have hit a newline character. If so, add a marker | |
| 4187 | 4925 to the line and end this loop. */ |
| 428 | 4926 else if (data.ch == '\n') |
| 4927 { | |
| 4928 /* We aren't going to be adding an end glyph so give its | |
| 4187 | 4929 space back in order to make sure that the cursor can |
| 4930 fit. */ | |
| 819 | 4931 data.max_pixpos += data.end_glyph_width; |
| 428 | 4932 goto done; |
| 4933 } | |
| 4934 | |
| 4935 /* If the current character is considered to be printable, then | |
| 4187 | 4936 just add it. */ |
| 428 | 4937 else if (data.ch >= printable_min) |
| 4938 { | |
| 867 | 4939 *prop = add_ichar_rune (&data); |
| 428 | 4940 if (*prop) |
| 4941 goto done; | |
| 4942 } | |
| 4943 | |
| 4944 /* If the current character is a tab, determine the next tab | |
| 4187 | 4945 starting position and add a blank rune which extends from the |
| 4946 current pixel position to that starting position. */ | |
| 428 | 4947 else if (data.ch == '\t') |
| 4948 { | |
| 4949 int tab_start_pixpos = data.pixpos; | |
| 4950 int next_tab_start; | |
| 4951 int char_tab_width; | |
| 4952 int prop_width = 0; | |
| 4953 | |
| 4954 if (data.start_col > 1) | |
| 4955 tab_start_pixpos -= (space_width (w) * (data.start_col - 1)); | |
| 4956 | |
| 4957 next_tab_start = | |
| 4958 next_tab_position (w, tab_start_pixpos, | |
| 4959 dl->bounds.left_in + | |
| 4960 data.hscroll_glyph_width_adjust); | |
| 4961 if (next_tab_start > data.max_pixpos) | |
| 4962 { | |
| 4963 prop_width = next_tab_start - data.max_pixpos; | |
| 4964 next_tab_start = data.max_pixpos; | |
| 4965 } | |
| 4966 data.blank_width = next_tab_start - data.pixpos; | |
| 4967 char_tab_width = | |
| 4968 (next_tab_start - tab_start_pixpos) / space_width (w); | |
| 4969 | |
| 4970 *prop = add_blank_rune (&data, w, char_tab_width); | |
| 4971 | |
| 4972 /* add_blank_rune is only supposed to be called with | |
| 819 | 4973 sizes guaranteed to fit in the available space. */ |
| 428 | 4974 assert (!(*prop)); |
| 4975 | |
| 4976 if (prop_width) | |
| 4977 { | |
| 4978 struct prop_block pb; | |
| 4979 *prop = Dynarr_new (prop_block); | |
| 4980 | |
| 4981 pb.type = PROP_BLANK; | |
| 4982 pb.data.p_blank.width = prop_width; | |
| 4983 pb.data.p_blank.findex = data.findex; | |
| 4984 Dynarr_add (*prop, pb); | |
| 4985 | |
| 4986 goto done; | |
| 4987 } | |
| 4988 } | |
| 4989 | |
| 4990 /* If character is a control character, pass it off to | |
| 4187 | 4991 add_control_char_runes. |
| 428 | 4992 |
| 4993 The is_*() routines have undefined results on | |
| 4994 arguments outside of the range [-1, 255]. (This | |
| 4995 often bites people who carelessly use `char' instead | |
| 4996 of `unsigned char'.) | |
| 4997 */ | |
| 867 | 4998 else if (data.ch < 0x100 && iscntrl ((Ibyte) data.ch)) |
| 428 | 4999 { |
| 5000 *prop = add_control_char_runes (&data, b); | |
| 5001 | |
| 5002 if (*prop) | |
| 5003 goto done; | |
| 5004 } | |
| 5005 | |
| 5006 /* If the character is above the ASCII range and we have not | |
| 4187 | 5007 already handled it, then print it as an octal number. */ |
| 428 | 5008 else if (data.ch >= 0200) |
| 5009 { | |
| 5010 *prop = add_octal_runes (&data); | |
| 5011 | |
| 5012 if (*prop) | |
| 5013 goto done; | |
| 5014 } | |
| 5015 | |
| 5016 /* Assume the current character is considered to be printable, | |
| 4187 | 5017 then just add it. */ |
| 428 | 5018 else |
| 5019 { | |
| 867 | 5020 *prop = add_ichar_rune (&data); |
| 428 | 5021 if (*prop) |
| 5022 goto done; | |
| 5023 } | |
| 5024 | |
| 826 | 5025 INC_BYTECOUNT (XSTRING_DATA (disp_string), data.byte_charpos); |
| 428 | 5026 } |
| 5027 } | |
| 5028 | |
| 819 | 5029 done: |
| 428 | 5030 |
| 5031 /* Determine the starting point of the next line if we did not hit the | |
| 5032 end of the buffer. */ | |
| 826 | 5033 if (data.byte_charpos < byte_string_zv) |
| 428 | 5034 { |
| 5035 /* #### This check is not correct. If the line terminated | |
| 5036 due to a begin-glyph or end-glyph hitting window-end, then | |
| 826 | 5037 data.ch will not point to the character at data.byte_charpos. If |
| 428 | 5038 you make the two changes mentioned at the top of this loop, |
| 5039 you should be able to say '(if (*prop))'. That should also | |
| 826 | 5040 make it possible to eliminate the data.byte_charpos < BYTE_BUF_ZV (b) |
| 428 | 5041 check. */ |
| 5042 | |
| 5043 /* The common case is that the line ended because we hit a newline. | |
| 4187 | 5044 In that case, the next character is just the next buffer |
| 5045 position. */ | |
| 428 | 5046 if (data.ch == '\n') |
| 5047 { | |
| 826 | 5048 INC_BYTECOUNT (XSTRING_DATA (disp_string), data.byte_charpos); |
| 428 | 5049 } |
| 5050 | |
| 5051 /* Otherwise we have a buffer line which cannot fit on one display | |
| 4187 | 5052 line. */ |
| 428 | 5053 else |
| 5054 { | |
| 5055 struct glyph_block gb; | |
| 5056 struct glyph_cachel *cachel; | |
| 5057 | |
| 5058 /* If the line is to be truncated then we actually have to look | |
| 4187 | 5059 for the next newline. We also add the end-of-line glyph which |
| 5060 we know will fit because we adjusted the right border before | |
| 5061 we starting laying out the line. */ | |
| 819 | 5062 data.max_pixpos += data.end_glyph_width; |
| 428 | 5063 data.findex = default_face; |
| 5064 gb.extent = Qnil; | |
| 5065 | |
| 5066 if (truncate_win) | |
| 5067 { | |
| 826 | 5068 Bytecount byte_pos; |
| 428 | 5069 |
| 5070 /* Now find the start of the next line. */ | |
| 867 | 5071 byte_pos = byte_find_next_ichar_in_string (disp_string, '\n', |
| 826 | 5072 data.byte_charpos, 1); |
| 428 | 5073 |
| 5074 data.cursor_type = NO_CURSOR; | |
| 826 | 5075 data.byte_charpos = byte_pos; |
| 428 | 5076 gb.glyph = Vtruncation_glyph; |
| 5077 cachel = GLYPH_CACHEL (w, TRUN_GLYPH_INDEX); | |
| 5078 } | |
| 5079 else | |
| 5080 { | |
| 5081 /* The cursor can never be on the continuation glyph. */ | |
| 5082 data.cursor_type = NO_CURSOR; | |
| 5083 | |
| 826 | 5084 /* data.byte_charpos is already at the start of the next line. */ |
| 428 | 5085 |
| 442 | 5086 dl->line_continuation = 1; |
| 428 | 5087 gb.glyph = Vcontinuation_glyph; |
| 5088 cachel = GLYPH_CACHEL (w, CONT_GLYPH_INDEX); | |
| 5089 } | |
| 5090 | |
| 819 | 5091 if (data.end_glyph_width) |
| 428 | 5092 add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0, cachel); |
| 5093 | |
| 826 | 5094 if (truncate_win && data.byte_charpos == byte_string_zv) |
| 428 | 5095 { |
| 867 | 5096 const Ibyte *endb = itext_n_addr (XSTRING_DATA (disp_string), |
| 826 | 5097 byte_string_zv); |
| 867 | 5098 DEC_IBYTEPTR (endb); |
| 5099 if (itext_ichar (endb) != '\n') | |
| 428 | 5100 { |
| 5101 /* #### Damn this losing shit. */ | |
| 826 | 5102 data.byte_charpos++; |
| 428 | 5103 } |
| 5104 } | |
| 5105 } | |
| 5106 } | |
| 826 | 5107 else if (data.byte_charpos == byte_string_zv) |
| 428 | 5108 { |
| 5109 /* create_text_block () adds a bogus \n marker here which screws | |
| 5110 up subwindow display. Since we never have a cursor in the | |
| 5111 gutter we can safely ignore it. */ | |
| 5112 } | |
| 5113 /* Calculate left whitespace boundary. */ | |
| 5114 { | |
| 5115 int elt = 0; | |
| 5116 | |
| 5117 /* Whitespace past a newline is considered right whitespace. */ | |
| 5118 while (elt < Dynarr_length (db->runes)) | |
| 5119 { | |
| 5120 struct rune *rb = Dynarr_atp (db->runes, elt); | |
| 5121 | |
| 5122 if ((rb->type == RUNE_CHAR && rb->object.chr.ch == ' ') | |
| 5123 || rb->type == RUNE_BLANK) | |
| 5124 { | |
| 5125 dl->bounds.left_white += rb->width; | |
| 5126 elt++; | |
| 5127 } | |
| 5128 else | |
| 5129 elt = Dynarr_length (db->runes); | |
| 5130 } | |
| 5131 } | |
| 5132 | |
| 5133 /* Calculate right whitespace boundary. */ | |
| 5134 { | |
| 5135 int elt = Dynarr_length (db->runes) - 1; | |
| 5136 int done = 0; | |
| 5137 | |
| 5138 while (!done && elt >= 0) | |
| 5139 { | |
| 5140 struct rune *rb = Dynarr_atp (db->runes, elt); | |
| 5141 | |
| 5142 if (!(rb->type == RUNE_CHAR && rb->object.chr.ch < 0x100 | |
| 5143 && isspace (rb->object.chr.ch)) | |
| 5144 && !rb->type == RUNE_BLANK) | |
| 5145 { | |
| 5146 dl->bounds.right_white = rb->xpos + rb->width; | |
| 5147 done = 1; | |
| 5148 } | |
| 5149 | |
| 5150 elt--; | |
| 5151 | |
| 5152 } | |
| 5153 | |
| 5154 /* The line is blank so everything is considered to be right | |
| 5155 whitespace. */ | |
| 5156 if (!done) | |
| 5157 dl->bounds.right_white = dl->bounds.left_in; | |
| 5158 } | |
| 5159 | |
| 5160 /* Set the display blocks bounds. */ | |
| 5161 db->start_pos = dl->bounds.left_in; | |
| 5162 if (Dynarr_length (db->runes)) | |
| 5163 { | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
5164 struct rune *rb = Dynarr_lastp (db->runes); |
| 428 | 5165 |
| 5166 db->end_pos = rb->xpos + rb->width; | |
| 5167 } | |
| 5168 else | |
| 5169 db->end_pos = dl->bounds.right_white; | |
| 5170 | |
| 819 | 5171 calculate_baseline (&data); |
| 428 | 5172 |
| 5173 dl->ascent = data.new_ascent; | |
| 5174 dl->descent = data.new_descent; | |
| 5175 | |
| 5176 { | |
| 5177 unsigned short ascent = (unsigned short) XINT (w->minimum_line_ascent); | |
| 5178 | |
| 5179 if (dl->ascent < ascent) | |
| 5180 dl->ascent = ascent; | |
| 5181 } | |
| 5182 { | |
| 5183 unsigned short descent = (unsigned short) XINT (w->minimum_line_descent); | |
| 5184 | |
| 5185 if (dl->descent < descent) | |
| 5186 dl->descent = descent; | |
| 5187 } | |
| 5188 | |
| 819 | 5189 calculate_yoffset (dl, db); |
| 5190 | |
| 428 | 5191 dl->cursor_elt = data.cursor_x; |
| 5192 /* #### lossage lossage lossage! Fix this shit! */ | |
| 826 | 5193 if (data.byte_charpos > byte_string_zv) |
| 5194 dl->end_charpos = buffer_or_string_bytexpos_to_charxpos (disp_string, | |
| 5195 byte_string_zv); | |
| 428 | 5196 else |
| 826 | 5197 dl->end_charpos = |
| 5198 buffer_or_string_bytexpos_to_charxpos (disp_string, | |
| 5199 data.byte_charpos) - 1; | |
| 428 | 5200 if (truncate_win) |
| 434 | 5201 data.dl->num_chars = |
| 826 | 5202 string_column_at_point (disp_string, dl->end_charpos, |
| 793 | 5203 b ? XINT (b->tab_width) : 8); |
| 428 | 5204 else |
| 5205 /* This doesn't correctly take into account tabs and control | |
| 5206 characters but if the window isn't being truncated then this | |
| 5207 value isn't going to end up being used anyhow. */ | |
| 826 | 5208 data.dl->num_chars = dl->end_charpos - dl->charpos; |
| 428 | 5209 |
| 5210 /* #### handle horizontally scrolled line with text none of which | |
| 5211 was actually laid out. */ | |
| 5212 | |
| 5213 /* #### handle any remainder of overlay arrow */ | |
| 5214 | |
| 5215 if (*prop == ADD_FAILED) | |
| 5216 *prop = NULL; | |
| 5217 | |
| 5218 if (truncate_win && *prop) | |
| 5219 { | |
| 5220 Dynarr_free (*prop); | |
| 5221 *prop = NULL; | |
| 5222 } | |
| 5223 | |
| 5224 extent_fragment_delete (data.ef); | |
| 5225 | |
| 5226 /* #### If we started at EOB, then make sure we return a value past | |
| 5227 it so that regenerate_window will exit properly. This is bogus. | |
| 5228 The main loop should get fixed so that it isn't necessary to call | |
| 5229 this function if we are already at EOB. */ | |
| 5230 | |
| 826 | 5231 if (data.byte_charpos == byte_string_zv && byte_start_pos == byte_string_zv) |
| 793 | 5232 return string_index_byte_to_char (disp_string, |
| 826 | 5233 data.byte_charpos) + 1; /* Yuck! */ |
| 428 | 5234 else |
| 826 | 5235 return string_index_byte_to_char (disp_string, data.byte_charpos); |
| 428 | 5236 } |
| 5237 | |
| 5238 /* Given a display line and a starting position, ensure that the | |
| 5239 contents of the display line accurately represent the visual | |
| 5240 representation of the buffer contents starting from the given | |
| 5241 position when displayed in the given window. The display line ends | |
| 5242 when the contents of the line reach the right boundary of the given | |
| 434 | 5243 window. |
| 5244 | |
| 428 | 5245 This is very similar to generate_display_line but with the same |
| 5246 limitations as create_string_text_block. I have taken the liberty | |
| 665 | 5247 of fixing the bytebpos stuff though.*/ |
| 5248 | |
| 5249 static Charbpos | |
| 428 | 5250 generate_string_display_line (struct window *w, Lisp_Object disp_string, |
| 5251 struct display_line *dl, | |
| 826 | 5252 Charcount start_pos, |
| 428 | 5253 prop_block_dynarr **prop, |
| 5254 face_index default_face) | |
| 5255 { | |
| 826 | 5256 Charcount ret_charcount; |
| 428 | 5257 |
| 5258 /* you must set bounds before calling this. */ | |
| 434 | 5259 |
| 428 | 5260 /* Reset what this line is using. */ |
| 5261 if (dl->display_blocks) | |
| 5262 Dynarr_reset (dl->display_blocks); | |
| 5263 if (dl->left_glyphs) | |
| 5264 { | |
| 5265 Dynarr_free (dl->left_glyphs); | |
| 5266 dl->left_glyphs = 0; | |
| 5267 } | |
| 5268 if (dl->right_glyphs) | |
| 5269 { | |
| 5270 Dynarr_free (dl->right_glyphs); | |
| 5271 dl->right_glyphs = 0; | |
| 5272 } | |
| 5273 | |
| 5274 /* We aren't generating a modeline at the moment. */ | |
| 5275 dl->modeline = 0; | |
| 5276 | |
| 5277 /* Create a display block for the text region of the line. */ | |
| 826 | 5278 ret_charcount = create_string_text_block (w, disp_string, dl, start_pos, |
| 5279 prop, default_face); | |
| 5280 dl->charpos = start_pos; | |
| 5281 if (dl->end_charpos < dl->charpos) | |
| 5282 dl->end_charpos = dl->charpos; | |
| 428 | 5283 |
| 5284 /* If there are left glyphs associated with any character in the | |
| 5285 text block, then create a display block to handle them. */ | |
| 5286 if (dl->left_glyphs != NULL && Dynarr_length (dl->left_glyphs)) | |
| 5287 create_left_glyph_block (w, dl, 0); | |
| 5288 | |
| 5289 /* If there are right glyphs associated with any character in the | |
| 5290 text block, then create a display block to handle them. */ | |
| 5291 if (dl->right_glyphs != NULL && Dynarr_length (dl->right_glyphs)) | |
| 5292 create_right_glyph_block (w, dl); | |
| 5293 | |
| 826 | 5294 return ret_charcount; |
| 428 | 5295 } |
| 5296 | |
| 2518 | 5297 /* |
| 5298 | |
| 5299 Info on Re-entrancy crashes, with backtraces given: | |
| 5300 | |
| 5301 (Info-goto-node "(internals)Nasty Bugs due to Reentrancy in Redisplay Structures handling QUIT") | |
| 1318 | 5302 */ |
| 5303 | |
| 5304 | |
| 428 | 5305 /* This is ripped off from regenerate_window. All we want to do is |
| 5306 loop through elements in the string creating display lines until we | |
| 5307 have covered the provided area. Simple really. */ | |
| 5308 void | |
| 5309 generate_displayable_area (struct window *w, Lisp_Object disp_string, | |
| 5310 int xpos, int ypos, int width, int height, | |
| 5311 display_line_dynarr* dla, | |
| 826 | 5312 Charcount start_pos, |
| 428 | 5313 face_index default_face) |
| 5314 { | |
| 5315 int yend = ypos + height; | |
| 5316 Charcount s_zv; | |
| 5317 prop_block_dynarr *prop = 0; | |
| 5318 layout_bounds bounds; | |
| 2518 | 5319 int depth = -1; |
| 5320 | |
| 428 | 5321 /* if there's nothing to do then do nothing. code after this assumes |
| 5322 there is something to do. */ | |
| 5323 if (NILP (disp_string)) | |
| 5324 return; | |
| 5325 | |
| 2518 | 5326 /* See comment in regenerate_window() */ |
| 5327 if (!in_display) | |
| 5328 depth = enter_redisplay_critical_section (); | |
| 5329 | |
| 5330 assert (dla); | |
| 5331 Dynarr_reset (dla); | |
| 5332 | |
| 826 | 5333 s_zv = string_char_length (disp_string); |
| 428 | 5334 |
| 5335 bounds.left_out = xpos; | |
| 5336 bounds.right_out = xpos + width; | |
| 5337 /* The inner boundaries mark where the glyph margins are located. */ | |
| 5338 bounds.left_in = bounds.left_out + window_left_margin_width (w); | |
| 5339 bounds.right_in = bounds.right_out - window_right_margin_width (w); | |
| 5340 /* We cannot fully calculate the whitespace boundaries as they | |
| 5341 depend on the contents of the line being displayed. */ | |
| 5342 bounds.left_white = bounds.left_in; | |
| 5343 bounds.right_white = bounds.right_in; | |
| 5344 | |
| 5345 while (ypos < yend) | |
| 5346 { | |
| 5347 struct display_line dl; | |
| 5348 struct display_line *dlp; | |
| 826 | 5349 Charcount next_pos; |
| 428 | 5350 int local; |
| 851 | 5351 int pos_of_dlp = -1; |
| 428 | 5352 |
| 5353 if (Dynarr_length (dla) < Dynarr_largest (dla)) | |
| 5354 { | |
| 851 | 5355 pos_of_dlp = Dynarr_length (dla); |
| 5356 dlp = Dynarr_atp (dla, pos_of_dlp); | |
| 428 | 5357 local = 0; |
| 5358 } | |
| 5359 else | |
| 5360 { | |
| 4207 | 5361 DISPLAY_LINE_INIT (dl); |
| 428 | 5362 dlp = &dl; |
| 5363 local = 1; | |
| 5364 } | |
| 5365 | |
| 5366 dlp->bounds = bounds; | |
| 5367 dlp->offset = 0; | |
| 1318 | 5368 Dynarr_lock (dla); |
| 428 | 5369 next_pos = generate_string_display_line (w, disp_string, dlp, start_pos, |
| 5370 &prop, default_face); | |
| 1318 | 5371 Dynarr_unlock (dla); |
| 428 | 5372 /* we need to make sure that we continue along the line if there |
| 4187 | 5373 is more left to display otherwise we just end up redisplaying |
| 5374 the same chunk over and over again. */ | |
| 428 | 5375 if (next_pos == start_pos && next_pos < s_zv) |
| 5376 start_pos++; | |
| 5377 else | |
| 5378 start_pos = next_pos; | |
| 5379 | |
| 5380 dlp->ypos = ypos + dlp->ascent; | |
| 5381 ypos = dlp->ypos + dlp->descent; | |
| 5382 | |
| 5383 if (ypos > yend) | |
| 5384 { | |
| 5385 int visible_height = dlp->ascent + dlp->descent; | |
| 5386 | |
| 5387 dlp->clip = (ypos - yend); | |
| 5388 visible_height -= dlp->clip; | |
| 5389 | |
| 5390 if (visible_height < VERTICAL_CLIP (w, 1)) | |
| 5391 { | |
| 5392 if (local) | |
| 5393 free_display_line (dlp); | |
| 5394 break; | |
| 5395 } | |
| 5396 } | |
| 5397 else | |
| 5398 dlp->clip = 0; | |
| 5399 | |
|
4418
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5400 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
|
5401 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
|
5402 else if (pos_of_dlp == Dynarr_length (dla)) |
|
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5403 Dynarr_increment (dla); |
|
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5404 else |
|
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5405 ABORT (); |
| 428 | 5406 |
| 5407 /* #### This type of check needs to be done down in the | |
| 5408 generate_display_line call. */ | |
| 5409 if (start_pos >= s_zv) | |
| 5410 break; | |
| 5411 } | |
| 5412 | |
| 5413 if (prop) | |
| 5414 Dynarr_free (prop); | |
| 2518 | 5415 |
| 5416 if (depth >= 0) | |
| 5417 exit_redisplay_critical_section (depth); | |
| 428 | 5418 } |
| 5419 | |
| 5420 | |
| 5421 /***************************************************************************/ | |
| 5422 /* */ | |
| 5423 /* window-regeneration routines */ | |
| 5424 /* */ | |
| 5425 /***************************************************************************/ | |
| 5426 | |
| 5427 /* For a given window and starting position in the buffer it contains, | |
| 5428 ensure that the TYPE display lines accurately represent the | |
| 5429 presentation of the window. We pass the buffer instead of getting | |
| 5430 it from the window since redisplay_window may have temporarily | |
| 5431 changed it to the echo area buffer. */ | |
| 5432 | |
| 5433 static void | |
| 2518 | 5434 regenerate_window (struct window *w, Charbpos start_pos, Charbpos point, |
| 5435 int type) | |
| 428 | 5436 { |
| 5437 struct frame *f = XFRAME (w->frame); | |
| 5438 struct buffer *b = XBUFFER (w->buffer); | |
| 5439 int ypos = WINDOW_TEXT_TOP (w); | |
| 5440 int yend; /* set farther down */ | |
| 5441 int yclip = WINDOW_TEXT_TOP_CLIP (w); | |
| 442 | 5442 int force; |
| 2518 | 5443 int depth = -1; |
| 428 | 5444 |
| 5445 prop_block_dynarr *prop; | |
| 5446 layout_bounds bounds; | |
| 5447 display_line_dynarr *dla; | |
| 5448 int need_modeline; | |
| 5449 | |
| 5450 /* The lines had better exist by this point. */ | |
| 5451 if (!(dla = window_display_lines (w, type))) | |
| 2500 | 5452 ABORT (); |
| 2518 | 5453 |
| 5454 if (!in_display) | |
| 5455 depth = enter_redisplay_critical_section (); | |
| 5456 | |
| 5457 /* This is one spot where a re-entrancy crash will occur, due to a check | |
| 5458 in the dynarr to make sure it isn't "locked" */ | |
| 5459 /* | |
| 5460 | |
| 5461 Info on Re-entrancy crashes, with backtraces given: | |
| 5462 | |
| 5463 (Info-goto-node "(internals)Nasty Bugs due to Reentrancy in Redisplay Structures handling QUIT") | |
| 5464 */ | |
| 5465 | |
| 428 | 5466 Dynarr_reset (dla); |
| 5467 w->max_line_len = 0; | |
| 5468 | |
| 5469 /* Normally these get updated in redisplay_window but it is possible | |
| 5470 for this function to get called from some other points where that | |
| 5471 update may not have occurred. This acts as a safety check. */ | |
| 5472 if (!Dynarr_length (w->face_cachels)) | |
| 5473 reset_face_cachels (w); | |
| 5474 if (!Dynarr_length (w->glyph_cachels)) | |
| 5475 reset_glyph_cachels (w); | |
| 5476 | |
| 5477 Fset_marker (w->start[type], make_int (start_pos), w->buffer); | |
| 5478 Fset_marker (w->pointm[type], make_int (point), w->buffer); | |
| 5479 w->last_point_x[type] = -1; | |
| 5480 w->last_point_y[type] = -1; | |
| 5481 | |
| 5482 /* Make sure a modeline is in the structs if needed. */ | |
| 5483 need_modeline = ensure_modeline_generated (w, type); | |
| 5484 | |
| 5485 /* Wait until here to set this so that the structs have a modeline | |
| 5486 generated in the case where one didn't exist. */ | |
| 5487 yend = WINDOW_TEXT_BOTTOM (w); | |
| 5488 | |
| 5489 bounds = calculate_display_line_boundaries (w, 0); | |
| 5490 | |
| 5491 /* 97/3/14 jhod: stuff added here to support pre-prompts (used for input systems) */ | |
| 5492 if (MINI_WINDOW_P (w) | |
| 5493 && (!NILP (Vminibuf_prompt) || !NILP (Vminibuf_preprompt)) | |
| 5494 && !echo_area_active (f) | |
| 5495 && start_pos == BUF_BEGV (b)) | |
| 5496 { | |
| 5497 struct prop_block pb; | |
| 5498 Lisp_Object string; | |
| 5499 prop = Dynarr_new (prop_block); | |
| 5500 | |
| 5501 string = concat2(Vminibuf_preprompt, Vminibuf_prompt); | |
| 5502 pb.type = PROP_MINIBUF_PROMPT; | |
| 5503 pb.data.p_string.str = XSTRING_DATA(string); | |
| 5504 pb.data.p_string.len = XSTRING_LENGTH(string); | |
| 5505 Dynarr_add (prop, pb); | |
| 5506 } | |
| 5507 else | |
| 5508 prop = 0; | |
| 5509 | |
| 442 | 5510 /* When we are computing things for scrolling purposes, make |
| 5511 sure at least one line is always generated */ | |
| 5512 force = (type == CMOTION_DISP); | |
| 5513 | |
| 5514 /* Make sure this is set always */ | |
| 5515 /* Note the conversion at end */ | |
| 5516 w->window_end_pos[type] = start_pos; | |
| 5517 while (ypos < yend || force) | |
| 428 | 5518 { |
| 5519 struct display_line dl; | |
| 5520 struct display_line *dlp; | |
| 5521 int local; | |
| 851 | 5522 int pos_of_dlp = -1; |
| 428 | 5523 |
| 5524 if (Dynarr_length (dla) < Dynarr_largest (dla)) | |
| 5525 { | |
| 851 | 5526 pos_of_dlp = Dynarr_length (dla); |
| 5527 dlp = Dynarr_atp (dla, pos_of_dlp); | |
| 428 | 5528 local = 0; |
| 5529 } | |
| 5530 else | |
| 5531 { | |
| 4207 | 5532 DISPLAY_LINE_INIT (dl); |
| 428 | 5533 dlp = &dl; |
| 5534 local = 1; | |
| 5535 } | |
| 5536 | |
| 5537 dlp->bounds = bounds; | |
| 5538 dlp->offset = 0; | |
| 1318 | 5539 Dynarr_lock (dla); |
| 428 | 5540 start_pos = generate_display_line (w, dlp, 1, start_pos, &prop, type); |
| 1318 | 5541 Dynarr_unlock (dla); |
| 428 | 5542 |
| 5543 if (yclip > dlp->ascent) | |
| 5544 { | |
| 5545 /* this should never happen, but if it does just display the | |
| 5546 whole line */ | |
| 5547 yclip = 0; | |
| 5548 } | |
| 5549 | |
| 5550 dlp->ypos = (ypos + dlp->ascent) - yclip; | |
| 5551 ypos = dlp->ypos + dlp->descent; | |
| 5552 | |
| 5553 /* See if we've been asked to start midway through a line, for | |
| 4187 | 5554 partial display line scrolling. */ |
| 434 | 5555 if (yclip) |
| 428 | 5556 { |
| 5557 dlp->top_clip = yclip; | |
| 5558 yclip = 0; | |
| 5559 } | |
| 5560 else | |
| 5561 dlp->top_clip = 0; | |
| 5562 | |
| 5563 if (ypos > yend) | |
| 5564 { | |
| 5565 int visible_height = dlp->ascent + dlp->descent; | |
| 5566 | |
| 5567 dlp->clip = (ypos - yend); | |
| 5568 /* Although this seems strange we could have a single very | |
| 5569 tall line visible for which we need to account for both | |
| 5570 the top clip and the bottom clip. */ | |
| 5571 visible_height -= (dlp->clip + dlp->top_clip); | |
| 5572 | |
| 442 | 5573 if (visible_height < VERTICAL_CLIP (w, 1) && !force) |
| 428 | 5574 { |
| 5575 if (local) | |
| 5576 free_display_line (dlp); | |
| 5577 break; | |
| 5578 } | |
| 5579 } | |
| 5580 else | |
| 5581 dlp->clip = 0; | |
| 5582 | |
| 5583 if (dlp->cursor_elt != -1) | |
| 5584 { | |
| 5585 /* #### This check is steaming crap. Have to get things | |
| 4187 | 5586 fixed so when create_text_block hits EOB, we're done, |
| 5587 period. */ | |
| 428 | 5588 if (w->last_point_x[type] == -1) |
| 5589 { | |
| 5590 w->last_point_x[type] = dlp->cursor_elt; | |
| 5591 w->last_point_y[type] = Dynarr_length (dla); | |
| 5592 } | |
| 5593 else | |
| 5594 { | |
| 5595 /* #### This means that we've added a cursor at EOB | |
| 4187 | 5596 twice. Yuck oh yuck. */ |
| 1318 | 5597 struct display_block *db; |
| 5598 | |
| 5599 Dynarr_lock (dla); | |
| 5600 db = get_display_block_from_line (dlp, TEXT); | |
| 5601 Dynarr_unlock (dla); | |
| 428 | 5602 |
| 5603 Dynarr_atp (db->runes, dlp->cursor_elt)->cursor_type = NO_CURSOR; | |
| 5604 dlp->cursor_elt = -1; | |
| 5605 } | |
| 5606 } | |
| 5607 | |
| 5608 if (dlp->num_chars > w->max_line_len) | |
| 5609 w->max_line_len = dlp->num_chars; | |
| 5610 | |
|
4418
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5611 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
|
5612 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
|
5613 else if (pos_of_dlp == Dynarr_length (dla)) |
|
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5614 Dynarr_increment (dla); |
|
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5615 else |
|
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5616 ABORT (); |
| 428 | 5617 |
| 5618 /* #### This isn't right, but it is close enough for now. */ | |
| 5619 w->window_end_pos[type] = start_pos; | |
| 5620 | |
| 5621 /* #### This type of check needs to be done down in the | |
| 5622 generate_display_line call. */ | |
| 5623 if (start_pos > BUF_ZV (b)) | |
| 5624 break; | |
| 442 | 5625 |
| 5626 force = 0; | |
| 428 | 5627 } |
| 5628 | |
| 5629 if (prop) | |
| 5630 Dynarr_free (prop); | |
| 5631 | |
| 5632 /* #### More not quite right, but close enough. */ | |
| 442 | 5633 /* Ben sez: apparently window_end_pos[] is measured |
| 428 | 5634 as the number of characters between the window end and the |
| 5635 end of the buffer? This seems rather weirdo. What's | |
| 442 | 5636 the justification for this? |
| 5637 | |
| 5638 JV sez: Because BUF_Z (b) would be a good initial value, however | |
| 5639 that can change. This representation allows initalizing with 0. | |
| 5640 */ | |
| 428 | 5641 w->window_end_pos[type] = BUF_Z (b) - w->window_end_pos[type]; |
| 5642 | |
| 5643 if (need_modeline) | |
| 5644 { | |
| 5645 /* We know that this is the right thing to use because we put it | |
| 4187 | 5646 there when we first started working in this function. */ |
| 428 | 5647 generate_modeline (w, Dynarr_atp (dla, 0), type); |
| 5648 } | |
| 2518 | 5649 |
| 5650 if (depth >= 0) | |
| 5651 exit_redisplay_critical_section (depth); | |
| 428 | 5652 } |
| 5653 | |
| 826 | 5654 #define REGEN_INC_FIND_START_END \ |
| 5655 do { \ | |
| 5656 /* Determine start and end of lines. */ \ | |
| 5657 if (!Dynarr_length (cdla)) \ | |
| 5658 return 0; \ | |
| 5659 else \ | |
| 5660 { \ | |
| 428 | 5661 if (Dynarr_atp (cdla, 0)->modeline && Dynarr_atp (ddla, 0)->modeline) \ |
| 826 | 5662 { \ |
| 5663 dla_start = 1; \ | |
| 5664 } \ | |
| 5665 else if (!Dynarr_atp (cdla, 0)->modeline \ | |
| 5666 && !Dynarr_atp (ddla, 0)->modeline) \ | |
| 5667 { \ | |
| 5668 dla_start = 0; \ | |
| 5669 } \ | |
| 5670 else \ | |
| 2500 | 5671 ABORT (); /* structs differ */ \ |
| 826 | 5672 \ |
| 5673 dla_end = Dynarr_length (cdla) - 1; \ | |
| 5674 } \ | |
| 5675 \ | |
| 5676 start_pos = (Dynarr_atp (cdla, dla_start)->charpos \ | |
| 5677 + Dynarr_atp (cdla, dla_start)->offset); \ | |
| 5678 /* If this isn't true, then startp has changed and we need to do a \ | |
| 5679 full regen. */ \ | |
| 5680 if (startp != start_pos) \ | |
| 5681 return 0; \ | |
| 5682 \ | |
| 5683 /* Point is outside the visible region so give up. */ \ | |
| 5684 if (pointm < start_pos) \ | |
| 5685 return 0; \ | |
| 5686 \ | |
| 428 | 5687 } while (0) |
| 5688 | |
| 5689 /* This attempts to incrementally update the display structures. It | |
| 5690 returns a boolean indicating success or failure. This function is | |
| 5691 very similar to regenerate_window_incrementally and is in fact only | |
| 5692 called from that function. However, because of the nature of the | |
| 5693 changes it deals with it sometimes makes different assumptions | |
| 5694 which can lead to success which are much more difficult to make | |
| 5695 when dealing with buffer changes. */ | |
| 5696 | |
| 5697 static int | |
| 665 | 5698 regenerate_window_extents_only_changed (struct window *w, Charbpos startp, |
| 5699 Charbpos pointm, | |
| 428 | 5700 Charcount beg_unchanged, |
| 5701 Charcount end_unchanged) | |
| 5702 { | |
| 5703 struct buffer *b = XBUFFER (w->buffer); | |
| 5704 display_line_dynarr *cdla = window_display_lines (w, CURRENT_DISP); | |
| 5705 display_line_dynarr *ddla = window_display_lines (w, DESIRED_DISP); | |
| 5706 | |
| 5707 int dla_start = 0; | |
| 5708 int dla_end, line; | |
| 5709 int first_line, last_line; | |
| 665 | 5710 Charbpos start_pos; |
| 428 | 5711 /* Don't define this in the loop where it is used because we |
| 5712 definitely want its value to survive between passes. */ | |
| 5713 prop_block_dynarr *prop = NULL; | |
| 5714 | |
| 5715 /* If we don't have any buffer change recorded but the modiff flag has | |
| 5716 been incremented, then fail. I'm not sure of the exact circumstances | |
| 5717 under which this can happen, but I believe that it is probably a | |
| 5718 reasonable happening. */ | |
| 5719 if (!point_visible (w, pointm, CURRENT_DISP) | |
| 5720 || XINT (w->last_modified[CURRENT_DISP]) < BUF_MODIFF (b)) | |
| 5721 return 0; | |
| 5722 | |
| 5723 /* If the cursor is moved we attempt to update it. If we succeed we | |
| 5724 go ahead and proceed with the optimization attempt. */ | |
| 5725 if (!EQ (Fmarker_buffer (w->last_point[CURRENT_DISP]), w->buffer) | |
| 5726 || pointm != marker_position (w->last_point[CURRENT_DISP])) | |
| 5727 { | |
| 5728 struct frame *f = XFRAME (w->frame); | |
| 5729 struct device *d = XDEVICE (f->device); | |
| 5730 struct frame *sel_f = device_selected_frame (d); | |
| 5731 int success = 0; | |
| 5732 | |
| 5733 if (w->last_point_x[CURRENT_DISP] != -1 | |
| 5734 && w->last_point_y[CURRENT_DISP] != -1) | |
| 5735 { | |
| 5736 | |
| 5737 if (redisplay_move_cursor (w, pointm, WINDOW_TTY_P (w))) | |
| 5738 { | |
| 5739 /* Always regenerate the modeline in case it is | |
| 4187 | 5740 displaying the current line or column. */ |
| 428 | 5741 regenerate_modeline (w); |
| 5742 success = 1; | |
| 5743 } | |
| 5744 } | |
| 5745 else if (w != XWINDOW (FRAME_SELECTED_WINDOW (sel_f))) | |
| 5746 { | |
| 5747 if (f->modeline_changed) | |
| 5748 regenerate_modeline (w); | |
| 5749 success = 1; | |
| 5750 } | |
| 5751 | |
| 5752 if (!success) | |
| 5753 return 0; | |
| 5754 } | |
| 5755 | |
| 5756 if (beg_unchanged == -1 && end_unchanged == -1) | |
| 5757 return 1; | |
| 5758 | |
| 5759 /* assert: There are no buffer modifications or they are all below the | |
| 5760 visible region. We assume that regenerate_window_incrementally has | |
| 5761 not called us unless this is true. */ | |
| 5762 | |
| 5763 REGEN_INC_FIND_START_END; | |
| 5764 | |
| 5765 /* If the changed are starts before the visible area, give up. */ | |
| 5766 if (beg_unchanged < startp) | |
| 5767 return 0; | |
| 5768 | |
| 5769 /* Find what display line the extent changes first affect. */ | |
| 5770 line = dla_start; | |
| 5771 while (line <= dla_end) | |
| 5772 { | |
| 5773 struct display_line *dl = Dynarr_atp (cdla, line); | |
| 826 | 5774 Charbpos lstart = dl->charpos + dl->offset; |
| 5775 Charbpos lend = dl->end_charpos + dl->offset; | |
| 428 | 5776 |
| 5777 if (beg_unchanged >= lstart && beg_unchanged <= lend) | |
| 5778 break; | |
| 5779 | |
| 5780 line++; | |
| 5781 } | |
| 5782 | |
| 5783 /* If the changes are below the visible area then if point hasn't | |
| 5784 moved return success otherwise fail in order to be safe. */ | |
| 5785 if (line > dla_end) | |
| 5786 { | |
| 5787 if (EQ (Fmarker_buffer (w->last_point[CURRENT_DISP]), w->buffer) | |
| 5788 && pointm == marker_position (w->last_point[CURRENT_DISP])) | |
| 5789 return 1; | |
| 5790 else | |
| 5791 return 0; | |
| 5792 } | |
| 5793 | |
| 5794 /* At this point we know what line the changes first affect. We now | |
| 5795 begin redrawing lines as long as we are still in the affected | |
| 5796 region and the line's size and positioning don't change. | |
| 5797 Otherwise we fail. If we fail we will have altered the desired | |
| 5798 structs which could lead to an assertion failure. However, if we | |
| 5799 fail the next thing that is going to happen is a full regen so we | |
| 5800 will actually end up being safe. */ | |
| 5801 w->last_modified[DESIRED_DISP] = make_int (BUF_MODIFF (b)); | |
| 5802 w->last_facechange[DESIRED_DISP] = make_int (BUF_FACECHANGE (b)); | |
| 5803 Fset_marker (w->last_start[DESIRED_DISP], make_int (startp), w->buffer); | |
| 5804 Fset_marker (w->last_point[DESIRED_DISP], make_int (pointm), w->buffer); | |
| 5805 | |
| 5806 first_line = last_line = line; | |
| 5807 while (line <= dla_end) | |
| 5808 { | |
| 2286 | 5809 Charbpos old_start, old_end; |
| 428 | 5810 struct display_line *cdl = Dynarr_atp (cdla, line); |
| 5811 struct display_line *ddl = Dynarr_atp (ddla, line); | |
| 5812 struct display_block *db; | |
| 5813 int initial_size; | |
| 5814 | |
| 826 | 5815 assert (cdl->charpos == ddl->charpos); |
| 5816 assert (cdl->end_charpos == ddl->end_charpos); | |
| 428 | 5817 assert (cdl->offset == ddl->offset); |
| 5818 | |
| 5819 db = get_display_block_from_line (ddl, TEXT); | |
| 5820 initial_size = Dynarr_length (db->runes); | |
| 826 | 5821 old_start = ddl->charpos + ddl->offset; |
| 5822 old_end = ddl->end_charpos + ddl->offset; | |
| 428 | 5823 |
| 5824 /* If this is the first line being updated and it used | |
| 4187 | 5825 propagation data, fail. Otherwise we'll be okay because |
| 5826 we'll have the necessary propagation data. */ | |
| 428 | 5827 if (line == first_line && ddl->used_prop_data) |
| 5828 return 0; | |
| 5829 | |
| 2286 | 5830 generate_display_line (w, ddl, 0, ddl->charpos + ddl->offset, |
| 5831 &prop, DESIRED_DISP); | |
| 428 | 5832 ddl->offset = 0; |
| 5833 | |
| 5834 /* #### If there is propagated stuff the fail. We could | |
| 4187 | 5835 probably actually deal with this if the line had propagated |
| 5836 information when originally created by a full | |
| 5837 regeneration. */ | |
| 428 | 5838 if (prop) |
| 5839 { | |
| 5840 Dynarr_free (prop); | |
| 5841 return 0; | |
| 5842 } | |
| 5843 | |
| 5844 /* If any line position parameters have changed or a | |
| 4187 | 5845 cursor has disappeared or disappeared, fail. */ |
| 428 | 5846 db = get_display_block_from_line (ddl, TEXT); |
| 5847 if (cdl->ypos != ddl->ypos | |
| 5848 || cdl->ascent != ddl->ascent | |
| 5849 || cdl->descent != ddl->descent | |
| 5850 || cdl->top_clip != ddl->top_clip | |
| 5851 || (cdl->cursor_elt != -1 && ddl->cursor_elt == -1) | |
| 5852 || (cdl->cursor_elt == -1 && ddl->cursor_elt != -1) | |
| 826 | 5853 || old_start != ddl->charpos |
| 5854 || old_end != ddl->end_charpos | |
| 428 | 5855 || initial_size != Dynarr_length (db->runes)) |
| 5856 { | |
| 5857 return 0; | |
| 5858 } | |
| 5859 | |
| 5860 if (ddl->cursor_elt != -1) | |
| 5861 { | |
| 5862 w->last_point_x[DESIRED_DISP] = ddl->cursor_elt; | |
| 5863 w->last_point_y[DESIRED_DISP] = line; | |
| 5864 } | |
| 5865 | |
| 5866 last_line = line; | |
| 5867 | |
| 5868 /* If the extent changes end on the line we just updated then | |
| 4187 | 5869 we're done. Otherwise go on to the next line. */ |
| 826 | 5870 if (end_unchanged <= ddl->end_charpos) |
| 428 | 5871 break; |
| 5872 else | |
| 5873 line++; | |
| 5874 } | |
| 5875 | |
| 5876 redisplay_update_line (w, first_line, last_line, 1); | |
| 5877 return 1; | |
| 5878 } | |
| 5879 | |
| 5880 /* Attempt to update the display data structures based on knowledge of | |
| 5881 the changed region in the buffer. Returns a boolean indicating | |
| 5882 success or failure. If this function returns a failure then a | |
| 5883 regenerate_window _must_ be performed next in order to maintain | |
| 5884 invariants located here. */ | |
| 5885 | |
| 5886 static int | |
| 665 | 5887 regenerate_window_incrementally (struct window *w, Charbpos startp, |
| 5888 Charbpos pointm) | |
| 428 | 5889 { |
| 5890 struct buffer *b = XBUFFER (w->buffer); | |
| 5891 display_line_dynarr *cdla = window_display_lines (w, CURRENT_DISP); | |
| 5892 display_line_dynarr *ddla = window_display_lines (w, DESIRED_DISP); | |
| 5893 Charcount beg_unchanged, end_unchanged; | |
| 5894 Charcount extent_beg_unchanged, extent_end_unchanged; | |
| 5895 | |
| 5896 int dla_start = 0; | |
| 5897 int dla_end, line; | |
| 665 | 5898 Charbpos start_pos; |
| 428 | 5899 |
| 5900 /* If this function is called, the current and desired structures | |
| 5901 had better be identical. If they are not, then that is a bug. */ | |
| 5902 assert (Dynarr_length (cdla) == Dynarr_length (ddla)); | |
| 5903 | |
| 5904 /* We don't handle minibuffer windows yet. The minibuffer prompt | |
| 5905 screws us up. */ | |
| 5906 if (MINI_WINDOW_P (w)) | |
| 5907 return 0; | |
| 5908 | |
| 5909 extent_beg_unchanged = BUF_EXTENT_BEGIN_UNCHANGED (b); | |
| 5910 extent_end_unchanged = (BUF_EXTENT_END_UNCHANGED (b) == -1 | |
| 5911 ? -1 | |
| 5912 : BUF_Z (b) - BUF_EXTENT_END_UNCHANGED (b)); | |
| 5913 | |
| 5914 /* If nothing has changed in the buffer, then make sure point is ok | |
| 5915 and succeed. */ | |
| 5916 if (BUF_BEGIN_UNCHANGED (b) == -1 && BUF_END_UNCHANGED (b) == -1) | |
| 5917 return regenerate_window_extents_only_changed (w, startp, pointm, | |
| 5918 extent_beg_unchanged, | |
| 5919 extent_end_unchanged); | |
| 5920 | |
| 5921 /* We can't deal with deleted newlines. */ | |
| 5922 if (BUF_NEWLINE_WAS_DELETED (b)) | |
| 5923 return 0; | |
| 5924 | |
| 5925 beg_unchanged = BUF_BEGIN_UNCHANGED (b); | |
| 5926 end_unchanged = (BUF_END_UNCHANGED (b) == -1 | |
| 5927 ? -1 | |
| 5928 : BUF_Z (b) - BUF_END_UNCHANGED (b)); | |
| 5929 | |
| 5930 REGEN_INC_FIND_START_END; | |
| 5931 | |
| 5932 /* If the changed area starts before the visible area, give up. */ | |
| 5933 if (beg_unchanged < startp) | |
| 5934 return 0; | |
| 5935 | |
| 5936 /* Find what display line the buffer changes first affect. */ | |
| 5937 line = dla_start; | |
| 5938 while (line <= dla_end) | |
| 5939 { | |
| 5940 struct display_line *dl = Dynarr_atp (cdla, line); | |
| 826 | 5941 Charbpos lstart = dl->charpos + dl->offset; |
| 5942 Charbpos lend = dl->end_charpos + dl->offset; | |
| 428 | 5943 |
| 5944 if (beg_unchanged >= lstart && beg_unchanged <= lend) | |
| 5945 break; | |
| 5946 | |
| 5947 line++; | |
| 5948 } | |
| 5949 | |
| 5950 /* If the changes are below the visible area then if point hasn't | |
| 5951 moved return success otherwise fail in order to be safe. */ | |
| 5952 if (line > dla_end) | |
| 5953 return regenerate_window_extents_only_changed (w, startp, pointm, | |
| 5954 extent_beg_unchanged, | |
| 5955 extent_end_unchanged); | |
| 5956 else | |
| 5957 /* At this point we know what line the changes first affect. We | |
| 5958 now redraw that line. If the changes are contained within it | |
| 5959 we are going to succeed and can update just that one line. | |
| 5960 Otherwise we fail. If we fail we will have altered the desired | |
| 5961 structs which could lead to an assertion failure. However, if | |
| 5962 we fail the next thing that is going to happen is a full regen | |
| 5963 so we will actually end up being safe. */ | |
| 5964 { | |
| 5965 prop_block_dynarr *prop = NULL; | |
| 5966 struct display_line *cdl = Dynarr_atp (cdla, line); | |
| 5967 struct display_line *ddl = Dynarr_atp (ddla, line); | |
| 5968 | |
| 826 | 5969 assert (cdl->charpos == ddl->charpos); |
| 5970 assert (cdl->end_charpos == ddl->end_charpos); | |
| 428 | 5971 assert (cdl->offset == ddl->offset); |
| 5972 | |
| 442 | 5973 /* If the line continues to next display line, fail. */ |
| 5974 if (ddl->line_continuation) | |
| 5975 return 0; | |
| 428 | 5976 |
| 5977 /* If the line was generated using propagation data, fail. */ | |
| 5978 if (ddl->used_prop_data) | |
| 5979 return 0; | |
| 5980 | |
| 2286 | 5981 generate_display_line (w, ddl, 0, ddl->charpos + ddl->offset, |
| 5982 &prop, DESIRED_DISP); | |
| 428 | 5983 ddl->offset = 0; |
| 5984 | |
| 5985 /* If there is propagated stuff then it is pretty much a | |
| 4187 | 5986 guarantee that more than just the one line is affected. */ |
| 428 | 5987 if (prop) |
| 5988 { | |
| 5989 Dynarr_free (prop); | |
| 5990 return 0; | |
| 5991 } | |
| 5992 | |
| 442 | 5993 /* If the line continues to next display line, fail. */ |
| 5994 if (ddl->line_continuation) | |
| 5995 return 0; | |
| 428 | 5996 |
| 5997 /* If any line position parameters have changed or a | |
| 4187 | 5998 cursor has disappeared or disappeared, fail. */ |
| 428 | 5999 if (cdl->ypos != ddl->ypos |
| 6000 || cdl->ascent != ddl->ascent | |
| 6001 || cdl->descent != ddl->descent | |
| 6002 || cdl->top_clip != ddl->top_clip | |
| 6003 || (cdl->cursor_elt != -1 && ddl->cursor_elt == -1) | |
| 6004 || (cdl->cursor_elt == -1 && ddl->cursor_elt != -1)) | |
| 6005 { | |
| 6006 return 0; | |
| 6007 } | |
| 6008 | |
| 6009 /* If the changed area also ends on this line, then we may be in | |
| 4187 | 6010 business. Update everything and return success. */ |
| 826 | 6011 if (end_unchanged >= ddl->charpos && end_unchanged <= ddl->end_charpos) |
| 428 | 6012 { |
| 6013 w->last_modified[DESIRED_DISP] = make_int (BUF_MODIFF (b)); | |
| 6014 w->last_facechange[DESIRED_DISP] = make_int (BUF_FACECHANGE (b)); | |
| 6015 Fset_marker (w->last_start[DESIRED_DISP], make_int (startp), | |
| 6016 w->buffer); | |
| 6017 Fset_marker (w->last_point[DESIRED_DISP], make_int (pointm), | |
| 6018 w->buffer); | |
| 6019 | |
| 6020 if (ddl->cursor_elt != -1) | |
| 6021 { | |
| 6022 w->last_point_x[DESIRED_DISP] = ddl->cursor_elt; | |
| 6023 w->last_point_y[DESIRED_DISP] = line; | |
| 6024 } | |
| 6025 | |
| 6026 redisplay_update_line (w, line, line, 1); | |
| 6027 regenerate_modeline (w); | |
| 6028 | |
| 6029 /* #### For now we just flush the cache until this has been | |
| 4187 | 6030 tested. After that is done, this should correct the |
| 6031 cache directly. */ | |
| 428 | 6032 Dynarr_reset (w->line_start_cache); |
| 6033 | |
| 6034 /* Adjust the extent changed boundaries to remove any | |
| 4187 | 6035 overlap with the buffer changes since we've just |
| 6036 successfully updated that area. */ | |
| 428 | 6037 if (extent_beg_unchanged != -1 |
| 6038 && extent_beg_unchanged >= beg_unchanged | |
| 6039 && extent_beg_unchanged < end_unchanged) | |
| 6040 extent_beg_unchanged = end_unchanged; | |
| 6041 | |
| 6042 if (extent_end_unchanged != -1 | |
| 6043 && extent_end_unchanged >= beg_unchanged | |
| 6044 && extent_end_unchanged < end_unchanged) | |
| 6045 extent_end_unchanged = beg_unchanged - 1; | |
| 6046 | |
| 6047 if (extent_end_unchanged <= extent_beg_unchanged) | |
| 6048 extent_beg_unchanged = extent_end_unchanged = -1; | |
| 6049 | |
| 6050 /* This could lead to odd results if it fails, but since the | |
| 4187 | 6051 buffer changes update succeeded this probably will to. |
| 6052 We already know that the extent changes start at or after | |
| 6053 the line because we checked before entering the loop. */ | |
| 428 | 6054 if (extent_beg_unchanged != -1 |
| 6055 && extent_end_unchanged != -1 | |
| 826 | 6056 && ((extent_beg_unchanged < ddl->charpos) |
| 6057 || (extent_end_unchanged > ddl->end_charpos))) | |
| 428 | 6058 return regenerate_window_extents_only_changed (w, startp, pointm, |
| 6059 extent_beg_unchanged, | |
| 6060 extent_end_unchanged); | |
| 6061 else | |
| 6062 return 1; | |
| 6063 } | |
| 6064 } | |
| 6065 | |
| 6066 /* Oh, well. */ | |
| 6067 return 0; | |
| 6068 } | |
| 6069 | |
| 6070 /* Given a window and a point, update the given display lines such | |
| 6071 that point is displayed in the middle of the window. | |
| 6072 Return the window's new start position. */ | |
| 6073 | |
| 665 | 6074 static Charbpos |
| 6075 regenerate_window_point_center (struct window *w, Charbpos point, int type) | |
| 428 | 6076 { |
| 665 | 6077 Charbpos startp; |
| 428 | 6078 |
| 6079 /* We need to make sure that the modeline is generated so that the | |
| 6080 window height can be calculated correctly. */ | |
| 6081 ensure_modeline_generated (w, type); | |
| 6082 | |
| 6083 startp = start_with_line_at_pixpos (w, point, window_half_pixpos (w)); | |
| 6084 regenerate_window (w, startp, point, type); | |
| 6085 Fset_marker (w->start[type], make_int (startp), w->buffer); | |
| 6086 | |
| 6087 return startp; | |
| 6088 } | |
| 6089 | |
| 6090 /* Given a window and a set of display lines, return a boolean | |
| 6091 indicating whether the given point is contained within. */ | |
| 6092 | |
| 6093 static int | |
| 665 | 6094 point_visible (struct window *w, Charbpos point, int type) |
| 428 | 6095 { |
| 6096 struct buffer *b = XBUFFER (w->buffer); | |
| 6097 display_line_dynarr *dla = window_display_lines (w, type); | |
| 6098 int first_line; | |
| 6099 | |
| 6100 if (Dynarr_length (dla) && Dynarr_atp (dla, 0)->modeline) | |
| 6101 first_line = 1; | |
| 6102 else | |
| 6103 first_line = 0; | |
| 6104 | |
| 6105 if (Dynarr_length (dla) > first_line) | |
| 6106 { | |
| 665 | 6107 Charbpos start, end; |
| 428 | 6108 struct display_line *dl = Dynarr_atp (dla, first_line); |
| 6109 | |
| 826 | 6110 start = dl->charpos; |
| 428 | 6111 end = BUF_Z (b) - w->window_end_pos[type] - 1; |
| 6112 | |
| 6113 if (point >= start && point <= end) | |
| 6114 { | |
| 6115 if (!MINI_WINDOW_P (w) && scroll_on_clipped_lines) | |
| 6116 { | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
6117 dl = Dynarr_lastp (dla); |
| 428 | 6118 |
| 826 | 6119 if (point >= (dl->charpos + dl->offset) |
| 6120 && point <= (dl->end_charpos + dl->offset)) | |
| 428 | 6121 return !dl->clip; |
| 6122 else | |
| 6123 return 1; | |
| 6124 } | |
| 6125 else | |
| 6126 return 1; | |
| 6127 } | |
| 6128 else | |
| 6129 return 0; | |
| 6130 } | |
| 6131 else | |
| 6132 return 0; | |
| 6133 } | |
| 6134 | |
| 6135 /* Return pixel position the middle of the window, not including the | |
| 6136 modeline and any potential horizontal scrollbar. */ | |
| 6137 | |
| 6138 int | |
| 6139 window_half_pixpos (struct window *w) | |
| 6140 { | |
| 6141 return WINDOW_TEXT_TOP (w) + (WINDOW_TEXT_HEIGHT (w) >> 1); | |
| 6142 } | |
| 6143 | |
| 6144 /* Return the display line which is currently in the middle of the | |
| 6145 window W for display lines TYPE. */ | |
| 6146 | |
| 6147 int | |
| 665 | 6148 line_at_center (struct window *w, int type, Charbpos start, Charbpos point) |
| 428 | 6149 { |
| 6150 display_line_dynarr *dla; | |
| 6151 int half; | |
| 6152 int elt; | |
| 6153 int first_elt = (MINI_WINDOW_P (w) ? 0 : 1); | |
| 6154 | |
| 6155 if (type == CMOTION_DISP) | |
| 6156 regenerate_window (w, start, point, type); | |
| 6157 | |
| 6158 dla = window_display_lines (w, type); | |
| 6159 half = window_half_pixpos (w); | |
| 6160 | |
| 6161 for (elt = first_elt; elt < Dynarr_length (dla); elt++) | |
| 6162 { | |
| 6163 struct display_line *dl = Dynarr_atp (dla, elt); | |
| 6164 int line_bot = dl->ypos + dl->descent; | |
| 6165 | |
| 6166 if (line_bot > half) | |
| 6167 return elt; | |
| 6168 } | |
| 6169 | |
| 6170 /* We may not have a line at the middle if the end of the buffer is | |
| 6171 being displayed. */ | |
| 6172 return -1; | |
| 6173 } | |
| 6174 | |
| 6175 /* Return a value for point that would place it at the beginning of | |
| 6176 the line which is in the middle of the window. */ | |
| 6177 | |
| 665 | 6178 Charbpos |
| 6179 point_at_center (struct window *w, int type, Charbpos start, Charbpos point) | |
| 428 | 6180 { |
| 6181 /* line_at_center will regenerate the display structures, if necessary. */ | |
| 6182 int line = line_at_center (w, type, start, point); | |
| 6183 | |
| 6184 if (line == -1) | |
| 6185 return BUF_ZV (XBUFFER (w->buffer)); | |
| 6186 else | |
| 6187 { | |
| 6188 display_line_dynarr *dla = window_display_lines (w, type); | |
| 6189 struct display_line *dl = Dynarr_atp (dla, line); | |
| 6190 | |
| 826 | 6191 return dl->charpos; |
| 428 | 6192 } |
| 6193 } | |
| 6194 | |
| 6195 /* For a given window, ensure that the current visual representation | |
| 6196 is accurate. */ | |
| 6197 | |
| 6198 static void | |
| 6199 redisplay_window (Lisp_Object window, int skip_selected) | |
| 6200 { | |
| 6201 struct window *w = XWINDOW (window); | |
| 6202 struct frame *f = XFRAME (w->frame); | |
| 6203 struct device *d = XDEVICE (f->device); | |
| 6204 Lisp_Object old_buffer = w->buffer; | |
| 6205 Lisp_Object the_buffer = w->buffer; | |
| 6206 struct buffer *b; | |
| 6207 int echo_active = 0; | |
| 6208 int startp = 1; | |
| 6209 int pointm; | |
| 6210 int old_startp = 1; | |
| 6211 int old_pointm = 1; | |
| 6212 int selected_in_its_frame; | |
| 6213 int selected_globally; | |
| 6214 int skip_output = 0; | |
| 6215 int truncation_changed; | |
| 6216 int inactive_minibuffer = | |
| 6217 (MINI_WINDOW_P (w) && | |
| 6218 (f != device_selected_frame (d)) && | |
| 6219 !is_surrogate_for_selected_frame (f)); | |
| 6220 | |
| 6221 /* #### In the new world this function actually does a bunch of | |
| 6222 optimizations such as buffer-based scrolling, but none of that is | |
| 6223 implemented yet. */ | |
| 6224 | |
| 6225 /* If this is a combination window, do its children; that's all. | |
| 6226 The selected window is always a leaf so we don't check for | |
| 6227 skip_selected here. */ | |
| 6228 if (!NILP (w->vchild)) | |
| 6229 { | |
| 6230 redisplay_windows (w->vchild, skip_selected); | |
| 6231 return; | |
| 6232 } | |
| 6233 if (!NILP (w->hchild)) | |
| 6234 { | |
| 6235 redisplay_windows (w->hchild, skip_selected); | |
| 6236 return; | |
| 6237 } | |
| 6238 | |
| 6239 /* Is this window the selected window on its frame? */ | |
| 6240 selected_in_its_frame = (w == XWINDOW (FRAME_SELECTED_WINDOW (f))); | |
| 6241 selected_globally = | |
| 6242 selected_in_its_frame && | |
| 6243 EQ(DEVICE_CONSOLE(d), Vselected_console) && | |
| 6244 XDEVICE(CONSOLE_SELECTED_DEVICE(XCONSOLE(DEVICE_CONSOLE(d)))) == d && | |
| 6245 XFRAME(DEVICE_SELECTED_FRAME(d)) == f; | |
| 6246 if (skip_selected && selected_in_its_frame) | |
| 6247 return; | |
| 6248 | |
| 6249 /* It is possible that the window is not fully initialized yet. */ | |
| 6250 if (NILP (w->buffer)) | |
| 6251 return; | |
| 6252 | |
| 6253 if (MINI_WINDOW_P (w) && echo_area_active (f)) | |
| 6254 { | |
| 6255 w->buffer = the_buffer = Vecho_area_buffer; | |
| 6256 echo_active = 1; | |
| 6257 } | |
| 6258 | |
| 6259 b = XBUFFER (w->buffer); | |
| 6260 | |
| 6261 if (echo_active) | |
| 6262 { | |
| 6263 old_pointm = selected_globally | |
| 4187 | 6264 ? BUF_PT (b) |
| 6265 : marker_position (w->pointm[CURRENT_DISP]); | |
| 428 | 6266 pointm = 1; |
| 6267 } | |
| 6268 else | |
| 6269 { | |
| 6270 if (selected_globally) | |
| 6271 { | |
| 6272 pointm = BUF_PT (b); | |
| 6273 } | |
| 6274 else | |
| 6275 { | |
| 6276 pointm = marker_position (w->pointm[CURRENT_DISP]); | |
| 6277 | |
| 6278 if (pointm < BUF_BEGV (b)) | |
| 6279 pointm = BUF_BEGV (b); | |
| 6280 else if (pointm > BUF_ZV (b)) | |
| 6281 pointm = BUF_ZV (b); | |
| 6282 } | |
| 6283 } | |
| 6284 Fset_marker (w->pointm[DESIRED_DISP], make_int (pointm), the_buffer); | |
| 6285 | |
| 6286 /* If the buffer has changed we have to invalidate all of our face | |
| 6287 cache elements. */ | |
| 6288 if ((!echo_active && b != window_display_buffer (w)) | |
| 6289 || !Dynarr_length (w->face_cachels) | |
| 6290 || f->faces_changed) | |
| 6291 reset_face_cachels (w); | |
| 6292 else | |
| 6293 mark_face_cachels_as_not_updated (w); | |
| 6294 | |
| 6295 /* Ditto the glyph cache elements, although we do *not* invalidate | |
| 6296 the cache purely because glyphs have changed - this is now | |
| 6297 handled by the dirty flag.*/ | |
| 6298 if ((!echo_active && b != window_display_buffer (w)) | |
| 440 | 6299 || !Dynarr_length (w->glyph_cachels) || f->faces_changed) |
| 428 | 6300 reset_glyph_cachels (w); |
| 6301 else | |
| 6302 mark_glyph_cachels_as_not_updated (w); | |
| 6303 | |
| 6304 /* If the marker's buffer is not the window's buffer, then we need | |
| 6305 to find a new starting position. */ | |
| 6306 if (!MINI_WINDOW_P (w) | |
| 6307 && !EQ (Fmarker_buffer (w->start[CURRENT_DISP]), w->buffer)) | |
| 6308 { | |
| 6309 startp = regenerate_window_point_center (w, pointm, DESIRED_DISP); | |
| 6310 | |
| 6311 goto regeneration_done; | |
| 6312 } | |
| 6313 | |
| 6314 if (echo_active) | |
| 6315 { | |
| 6316 old_startp = marker_position (w->start[CURRENT_DISP]); | |
| 6317 startp = 1; | |
| 6318 } | |
| 6319 else | |
| 6320 { | |
| 6321 startp = marker_position (w->start[CURRENT_DISP]); | |
| 6322 if (startp < BUF_BEGV (b)) | |
| 6323 startp = BUF_BEGV (b); | |
| 6324 else if (startp > BUF_ZV (b)) | |
| 6325 startp = BUF_ZV (b); | |
| 6326 } | |
| 6327 Fset_marker (w->start[DESIRED_DISP], make_int (startp), the_buffer); | |
| 6328 | |
| 6329 truncation_changed = (find_window_mirror (w)->truncate_win != | |
| 647 | 6330 (unsigned int) window_truncation_on (w)); |
| 428 | 6331 |
| 6332 /* If w->force_start is set, then some function set w->start and we | |
| 6333 should display from there and change point, if necessary, to | |
| 6334 ensure that it is visible. */ | |
| 6335 if (w->force_start || inactive_minibuffer) | |
| 6336 { | |
| 6337 w->force_start = 0; | |
| 6338 w->last_modified[DESIRED_DISP] = Qzero; | |
| 6339 w->last_facechange[DESIRED_DISP] = Qzero; | |
| 6340 | |
| 6341 regenerate_window (w, startp, pointm, DESIRED_DISP); | |
| 6342 | |
| 6343 if (!point_visible (w, pointm, DESIRED_DISP) && !inactive_minibuffer) | |
| 6344 { | |
| 6345 pointm = point_at_center (w, DESIRED_DISP, 0, 0); | |
| 6346 | |
| 6347 if (selected_globally) | |
| 6348 BUF_SET_PT (b, pointm); | |
| 6349 | |
| 6350 Fset_marker (w->pointm[DESIRED_DISP], make_int (pointm), | |
| 6351 the_buffer); | |
| 6352 | |
| 6353 /* #### BUFU amounts of overkill just to get the cursor | |
| 4187 | 6354 location marked properly. FIX ME FIX ME FIX ME */ |
| 428 | 6355 regenerate_window (w, startp, pointm, DESIRED_DISP); |
| 6356 } | |
| 6357 | |
| 6358 goto regeneration_done; | |
| 6359 } | |
| 6360 | |
| 6361 /* If nothing has changed since the last redisplay, then we just | |
| 6362 need to make sure that point is still visible. */ | |
| 6363 if (XINT (w->last_modified[CURRENT_DISP]) >= BUF_MODIFF (b) | |
| 6364 && XINT (w->last_facechange[CURRENT_DISP]) >= BUF_FACECHANGE (b) | |
| 6365 && pointm >= startp | |
| 6366 /* This check is to make sure we restore the minibuffer after a | |
| 4187 | 6367 temporary change to the echo area. */ |
| 428 | 6368 && !(MINI_WINDOW_P (w) && f->buffers_changed) |
| 6369 && !f->frame_changed | |
| 6370 && !truncation_changed | |
| 442 | 6371 /* check whether start is really at the beginning of a line GE */ |
| 428 | 6372 && (!w->start_at_line_beg || beginning_of_line_p (b, startp)) |
| 6373 ) | |
| 6374 { | |
| 6375 /* Check if the cursor has actually moved. */ | |
| 6376 if (EQ (Fmarker_buffer (w->last_point[CURRENT_DISP]), w->buffer) | |
| 6377 && pointm == marker_position (w->last_point[CURRENT_DISP]) | |
| 6378 && selected_globally | |
| 6379 && !w->windows_changed | |
| 6380 && !f->clip_changed | |
| 6381 && !f->extents_changed | |
| 6382 && !f->faces_changed | |
| 6383 && !f->glyphs_changed | |
| 6384 && !f->subwindows_changed | |
| 442 | 6385 /* && !f->subwindows_state_changed*/ |
| 428 | 6386 && !f->point_changed |
| 6387 && !f->windows_structure_changed) | |
| 6388 { | |
| 6389 /* If not, we're done. */ | |
| 6390 if (f->modeline_changed) | |
| 6391 regenerate_modeline (w); | |
| 6392 | |
| 6393 skip_output = 1; | |
| 6394 goto regeneration_done; | |
| 6395 } | |
| 6396 else | |
| 6397 { | |
| 6398 /* If the new point is visible in the redisplay structures, | |
| 4187 | 6399 then let the output update routines handle it, otherwise |
| 6400 do things the hard way. */ | |
| 428 | 6401 if (!w->windows_changed |
| 6402 && !f->clip_changed | |
| 6403 && !f->extents_changed | |
| 6404 && !f->faces_changed | |
| 6405 && !f->glyphs_changed | |
| 6406 && !f->subwindows_changed | |
| 442 | 6407 /* && !f->subwindows_state_changed*/ |
| 428 | 6408 && !f->windows_structure_changed) |
| 6409 { | |
| 6410 if (point_visible (w, pointm, CURRENT_DISP) | |
| 6411 && w->last_point_x[CURRENT_DISP] != -1 | |
| 6412 && w->last_point_y[CURRENT_DISP] != -1) | |
| 6413 { | |
| 6414 if (redisplay_move_cursor (w, pointm, FRAME_TTY_P (f))) | |
| 6415 { | |
| 6416 /* Always regenerate in case it is displaying | |
| 4187 | 6417 the current line or column. */ |
| 428 | 6418 regenerate_modeline (w); |
| 6419 | |
| 6420 skip_output = 1; | |
| 6421 goto regeneration_done; | |
| 6422 } | |
| 6423 } | |
| 6424 else if (!selected_in_its_frame && !f->point_changed) | |
| 6425 { | |
| 6426 if (f->modeline_changed) | |
| 6427 regenerate_modeline (w); | |
| 6428 | |
| 6429 skip_output = 1; | |
| 6430 goto regeneration_done; | |
| 6431 } | |
| 6432 } | |
| 6433 | |
| 6434 /* If we weren't able to take the shortcut method, then use | |
| 4187 | 6435 the brute force method. */ |
| 428 | 6436 regenerate_window (w, startp, pointm, DESIRED_DISP); |
| 6437 | |
| 6438 if (point_visible (w, pointm, DESIRED_DISP)) | |
| 6439 goto regeneration_done; | |
| 6440 } | |
| 6441 } | |
| 6442 | |
| 6443 /* Check if the starting point is no longer at the beginning of a | |
| 6444 line, in which case find a new starting point. We also recenter | |
| 6445 if our start position is equal to point-max. Otherwise we'll end | |
| 6446 up with a blank window. */ | |
| 6447 else if (((w->start_at_line_beg || MINI_WINDOW_P (w)) | |
| 6448 && !(startp == BUF_BEGV (b) | |
| 6449 || BUF_FETCH_CHAR (b, startp - 1) == '\n')) | |
| 6450 || (pointm == startp && | |
| 6451 EQ (Fmarker_buffer (w->last_start[CURRENT_DISP]), w->buffer) && | |
| 6452 startp < marker_position (w->last_start[CURRENT_DISP])) | |
| 6453 || (startp == BUF_ZV (b))) | |
| 6454 { | |
| 6455 startp = regenerate_window_point_center (w, pointm, DESIRED_DISP); | |
| 6456 | |
| 6457 goto regeneration_done; | |
| 6458 } | |
| 6459 /* See if we can update the data structures locally based on | |
| 6460 knowledge of what changed in the buffer. */ | |
| 6461 else if (!w->windows_changed | |
| 6462 && !f->clip_changed | |
| 6463 && !f->faces_changed | |
| 6464 && !f->glyphs_changed | |
| 6465 && !f->subwindows_changed | |
| 442 | 6466 /* && !f->subwindows_state_changed*/ |
| 428 | 6467 && !f->windows_structure_changed |
| 6468 && !f->frame_changed | |
| 6469 && !truncation_changed | |
| 6470 && pointm >= startp | |
| 6471 && regenerate_window_incrementally (w, startp, pointm)) | |
| 6472 { | |
| 6473 if (f->modeline_changed | |
| 6474 || XINT (w->last_modified[CURRENT_DISP]) < BUF_MODIFF (b) | |
| 6475 || XINT (w->last_facechange[CURRENT_DISP]) < BUF_FACECHANGE (b)) | |
| 6476 regenerate_modeline (w); | |
| 6477 | |
| 6478 skip_output = 1; | |
| 6479 goto regeneration_done; | |
| 6480 } | |
| 6481 /* #### This is where a check for structure based scrolling would go. */ | |
| 6482 /* If all else fails, try just regenerating and see what happens. */ | |
| 6483 else | |
| 6484 { | |
| 6485 regenerate_window (w, startp, pointm, DESIRED_DISP); | |
| 6486 | |
| 6487 if (point_visible (w, pointm, DESIRED_DISP)) | |
| 6488 goto regeneration_done; | |
| 6489 } | |
| 6490 | |
| 6491 /* We still haven't gotten the window regenerated with point | |
| 6492 visible. Next we try scrolling a little and see if point comes | |
| 6493 back onto the screen. */ | |
| 6494 if (scroll_step > 0) | |
| 6495 { | |
| 6496 int scrolled = scroll_conservatively; | |
| 6497 for (; scrolled >= 0; scrolled -= scroll_step) | |
| 6498 { | |
| 6499 startp = vmotion (w, startp, | |
| 6500 (pointm < startp) ? -scroll_step : scroll_step, 0); | |
| 6501 regenerate_window (w, startp, pointm, DESIRED_DISP); | |
| 6502 | |
| 6503 if (point_visible (w, pointm, DESIRED_DISP)) | |
| 6504 goto regeneration_done; | |
| 6505 } | |
| 6506 } | |
| 6507 | |
| 6508 /* We still haven't managed to get the screen drawn with point on | |
| 6509 the screen, so just center it and be done with it. */ | |
| 6510 startp = regenerate_window_point_center (w, pointm, DESIRED_DISP); | |
| 6511 | |
| 6512 | |
| 6513 regeneration_done: | |
| 6514 | |
| 6515 /* If the window's frame is changed then reset the current display | |
| 6516 lines in order to force a full repaint. */ | |
| 6517 if (f->frame_changed) | |
| 6518 { | |
| 6519 display_line_dynarr *cla = window_display_lines (w, CURRENT_DISP); | |
| 6520 | |
| 6521 Dynarr_reset (cla); | |
| 6522 } | |
| 6523 | |
| 6524 /* Must do this before calling redisplay_output_window because it | |
| 6525 sets some markers on the window. */ | |
| 6526 if (echo_active) | |
| 6527 { | |
| 6528 w->buffer = old_buffer; | |
| 6529 Fset_marker (w->pointm[DESIRED_DISP], make_int (old_pointm), old_buffer); | |
| 6530 Fset_marker (w->start[DESIRED_DISP], make_int (old_startp), old_buffer); | |
| 6531 } | |
| 6532 | |
| 6533 /* These also have to be set before calling redisplay_output_window | |
| 6534 since it sets the CURRENT_DISP values based on them. */ | |
| 6535 w->last_modified[DESIRED_DISP] = make_int (BUF_MODIFF (b)); | |
| 6536 w->last_facechange[DESIRED_DISP] = make_int (BUF_FACECHANGE (b)); | |
| 6537 Fset_marker (w->last_start[DESIRED_DISP], make_int (startp), w->buffer); | |
| 6538 Fset_marker (w->last_point[DESIRED_DISP], make_int (pointm), w->buffer); | |
| 6539 | |
| 6540 if (!skip_output) | |
| 6541 { | |
| 665 | 6542 Charbpos start = marker_position (w->start[DESIRED_DISP]); |
| 6543 Charbpos end = (w->window_end_pos[DESIRED_DISP] == -1 | |
| 428 | 6544 ? BUF_ZV (b) |
| 6545 : BUF_Z (b) - w->window_end_pos[DESIRED_DISP] - 1); | |
| 6546 /* Don't pollute the cache if not sure if we are correct */ | |
| 6547 if (w->start_at_line_beg) | |
| 6548 update_line_start_cache (w, start, end, pointm, 1); | |
| 6549 redisplay_output_window (w); | |
| 6550 /* | |
| 6551 * If we just displayed the echo area, the line start cache is | |
| 6552 * no longer valid, because the minibuffer window is associated | |
| 6553 * with the window now. | |
| 6554 */ | |
| 6555 if (echo_active) | |
| 6556 w->line_cache_last_updated = make_int (-1); | |
| 6557 } | |
| 6558 | |
| 6559 /* #### This should be dependent on face changes and will need to be | |
| 6560 somewhere else once tty updates occur on a per-frame basis. */ | |
| 6561 mark_face_cachels_as_clean (w); | |
| 6562 | |
| 438 | 6563 /* The glyph cachels only get dirty if someone changed something. |
| 6564 Since redisplay has now effectively ended we can reset the dirty | |
| 6565 flag since everything must be up-to-date. */ | |
| 428 | 6566 if (glyphs_changed) |
| 6567 mark_glyph_cachels_as_clean (w); | |
| 6568 | |
| 6569 w->windows_changed = 0; | |
| 6570 } | |
| 6571 | |
| 6572 /* Call buffer_reset_changes for all buffers present in any window | |
| 6573 currently visible in all frames on all devices. #### There has to | |
| 6574 be a better way to do this. */ | |
| 6575 | |
| 6576 static int | |
| 2286 | 6577 reset_buffer_changes_mapfun (struct window *w, void *UNUSED (closure)) |
| 428 | 6578 { |
| 6579 buffer_reset_changes (XBUFFER (w->buffer)); | |
| 6580 return 0; | |
| 6581 } | |
| 6582 | |
| 6583 static void | |
| 6584 reset_buffer_changes (void) | |
| 6585 { | |
| 6586 Lisp_Object frmcons, devcons, concons; | |
| 6587 | |
| 6588 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons) | |
| 6589 { | |
| 6590 struct frame *f = XFRAME (XCAR (frmcons)); | |
| 6591 | |
| 6592 if (FRAME_REPAINT_P (f)) | |
| 6593 map_windows (f, reset_buffer_changes_mapfun, 0); | |
| 6594 } | |
| 6595 } | |
| 6596 | |
| 6597 /* Ensure that all windows underneath the given window in the window | |
| 6598 hierarchy are correctly displayed. */ | |
| 6599 | |
| 6600 static void | |
| 6601 redisplay_windows (Lisp_Object window, int skip_selected) | |
| 6602 { | |
| 6603 for (; !NILP (window) ; window = XWINDOW (window)->next) | |
| 6604 { | |
| 6605 redisplay_window (window, skip_selected); | |
| 6606 } | |
| 6607 } | |
| 6608 | |
| 1318 | 6609 /* Register an action to be called at the end of redisplay. |
| 6610 in_display is 0 when this is called. | |
| 6611 This is used when it is discovered that an action needs to be taken, | |
| 6612 but it's during redisplay, so it's not safe. (Typically, it's an action | |
| 6613 that needs to enter redisplay, which can't happen reentrantly.) | |
| 6614 | |
| 6615 NEVER signal an error in these functions. | |
| 6616 */ | |
| 6617 | |
| 6618 void | |
| 6619 register_post_redisplay_action (void (*fun) (Lisp_Object), Lisp_Object arg) | |
| 6620 { | |
| 6621 Vpost_redisplay_actions = nconc2 (Vpost_redisplay_actions, | |
| 6622 list1 (Fcons (make_opaque_ptr | |
| 6623 ((void *) fun), arg))); | |
| 6624 } | |
| 6625 | |
| 1320 | 6626 static int running_post_redisplay_actions; |
| 6627 | |
| 1318 | 6628 static void |
| 6629 run_post_redisplay_actions (void) | |
| 6630 { | |
| 1320 | 6631 int depth; |
| 6632 | |
| 6633 if (running_post_redisplay_actions) | |
| 6634 return; | |
| 6635 | |
| 6636 depth = internal_bind_int (&running_post_redisplay_actions, 1); | |
| 6637 /* If the function pushes further actions, they will be tacked onto | |
| 6638 the end of the list, and we'll run them when we're done with the | |
| 6639 current ones. */ | |
| 1318 | 6640 while (!NILP (Vpost_redisplay_actions)) |
| 6641 { | |
| 6642 Lisp_Object car = XCAR (Vpost_redisplay_actions); | |
| 6643 void (*fun) (Lisp_Object) = | |
| 6644 (void (*)(Lisp_Object)) get_opaque_ptr (XCAR (car)); | |
| 6645 (*fun) (XCDR (car)); | |
| 6646 free_opaque_ptr (XCAR (car)); | |
| 6647 free_cons (car); | |
| 6648 Vpost_redisplay_actions = XCDR (Vpost_redisplay_actions); | |
| 6649 } | |
| 1320 | 6650 unbind_to (depth); |
| 1318 | 6651 } |
| 6652 | |
| 6653 #ifdef ERROR_CHECK_TRAPPING_PROBLEMS | |
| 6654 | |
| 6655 static Lisp_Object | |
| 2286 | 6656 commit_ritual_suicide (Lisp_Object UNUSED (ceci_nest_pas_une_pipe)) |
| 1318 | 6657 { |
| 6658 assert (!in_display); | |
| 6659 return Qnil; | |
| 6660 } | |
| 6661 | |
| 6662 #endif | |
| 6663 | |
| 6664 /* Within the guts of redisplay, we are defenseless and cannot allow any of | |
| 6665 the following to happen: | |
| 6666 | |
| 6667 1) garbage collection | |
| 6668 2) QUIT | |
| 6669 3) any non-local exits | |
| 6670 4) frame size changes | |
| 6671 5) deletion of any buffers, windows, frames, etc. | |
| 6672 6) modification of buffer text | |
| 6673 7) reentrant entry of redisplay (see the stack trace above | |
| 6674 generate_displayable_area()) | |
| 6675 | |
| 6676 The general reason is that the redisplay code is written to assume that | |
| 6677 it is the only code running, and thus (a) cannot tolerate structures | |
| 6678 changed out from under it (hence 1, 4, 5, 6, 7) and (b) at various points | |
| 6679 within redisplay the redisplay structures may be in an inconsistent | |
| 6680 state and there are no unwind-protects to clean the structures up in | |
| 6681 case of non-local exit (hence 2, 3). Fixing redisplay to address these | |
| 6682 issues is hard and perhaps not worth it (and might slow things down a | |
| 6683 fair amount). We address 1, 4, 5 and 6 ourselves inside of | |
| 6684 enter_redisplay_critical_section() by simply inhibiting them, but we | |
| 6685 cannot handle 2 and 3, which must be handled at the actual point where | |
| 6686 they may occur (especially, internal_equal() or any place that may call | |
| 6687 Lisp), by wrapping the code in call_trapping_problems() or | |
| 6688 call_with_suspended_errors(). [[ NOTE: We could address QUIT by inhibiting | |
| 6689 it but this would be anti-social because it would prevent the user from | |
| 6690 interrupting any Lisp code called within the critical section. With the | |
| 6691 call_*() wrapping, C-g will interrupt the Lisp code and throw back to | |
| 6692 the innermost wrapping. ]] In fact we do turn off QUIT handling, since | |
| 6693 it's just too dangerous otherwise. See below. | |
| 6694 | |
| 6695 Code calling enter_redisplay_critical_section() must check for reentrancy | |
| 6696 (#7) and take appropriate corrective action. | |
| 6697 | |
| 6698 To help debug potential problems, we arrange (when | |
| 6699 ERROR_CHECK_TRAPPING_PROBLEMS is set) to crash automatically every time | |
| 6700 we execute QUIT or call Lisp code unless proper wrapping is in place, as | |
| 6701 well as further checks when we actually Fsignal(), Fthrow(), | |
| 6702 garbage_collect_1(). | |
| 6703 | |
| 6704 #### If a frame-size change does occur we should probably actually be | |
| 6705 preempting redisplay. */ | |
| 6706 | |
| 6707 /* Count of number of recursive times we call | |
| 6708 enter_redisplay_critical_section() or | |
| 6709 enter_redisplay_critical_section_maybe(). | |
| 6710 enter_redisplay_critical_section() cannot occur reentrantly but we have | |
| 6711 to know in the *maybe() version whether to exit the section when we're | |
| 6712 done. */ | |
| 6713 static int in_display_nesting; | |
| 6714 | |
| 6715 static Lisp_Object | |
| 2286 | 6716 end_hold_frame_size_changes (Lisp_Object UNUSED (obj)) |
| 1318 | 6717 { |
| 6718 if (!hold_frame_size_changes) | |
| 6719 { | |
| 6720 /* we used to have a function to do this for only one frame, and | |
| 6721 it was typical to call it at the end of a critical section | |
| 6722 (which occurs once per frame); but what then happens if multiple | |
| 6723 frames have frame changes held up? | |
| 4187 | 6724 |
| 1318 | 6725 This means we are O(N^2) over frames. I seriously doubt it matters. |
| 6726 --ben */ | |
| 6727 Lisp_Object frmcons, devcons, concons; | |
| 4187 | 6728 |
| 1318 | 6729 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons) |
| 6730 { | |
| 6731 struct frame *f = XFRAME (XCAR (frmcons)); | |
| 6732 if (f->size_change_pending) | |
| 6733 change_frame_size (f, f->new_height, f->new_width, 0); | |
| 6734 } | |
| 6735 } | |
| 6736 return Qnil; | |
| 6737 } | |
| 6738 | |
| 6739 /* Call this to temporarily prevent frame-size changes from being processed. | |
| 6740 To undo, use unbind_to(), passing it the value returned by this function. | |
| 6741 */ | |
| 6742 | |
| 6743 int | |
| 6744 begin_hold_frame_size_changes (void) | |
| 6745 { | |
| 6746 int depth = specpdl_depth (); | |
| 6747 record_unwind_protect (end_hold_frame_size_changes, Qnil); | |
| 6748 internal_bind_int (&hold_frame_size_changes, 1 + hold_frame_size_changes); | |
| 6749 return depth; | |
| 6750 } | |
| 6751 | |
| 6752 int | |
| 6753 enter_redisplay_critical_section (void) | |
| 6754 { | |
| 6755 int depth = specpdl_depth (); | |
| 6756 | |
| 6757 /* Reentrant entry is deadly. The calling function must check for this. */ | |
| 6758 assert (!in_display); | |
| 6759 begin_hold_frame_size_changes (); | |
| 6760 /* Make sure in_display gets reset, but don't set it yet so that | |
| 6761 commit_ritual_suicide() can be used. */ | |
| 6762 internal_bind_int (&in_display, 0); | |
| 6763 internal_bind_int (&in_display_nesting, 1 + in_display_nesting); | |
| 6764 #ifdef ERROR_CHECK_TRAPPING_PROBLEMS | |
| 6765 /* Force every call to QUIT to check for in_displayness. This will | |
| 6766 verify proper wrapping, as in the previous comment, aborting if not. */ | |
| 6767 something_happened++; | |
| 6768 /* Verify that no nonlocal exits blow past us. */ | |
| 6769 record_unwind_protect (commit_ritual_suicide, Qnil); | |
| 6770 #endif | |
| 6771 in_display++; | |
| 6772 | |
| 6773 set_trapping_problems_flags (INHIBIT_ANY_CHANGE_AFFECTING_REDISPLAY); | |
| 6774 /* Even checking for QUIT can cause arbitrary Lisp code to be executed, | |
| 6775 e.g. through a menu handler. We really don't want that happening | |
| 6776 inside of redisplay. Code that we `eval' is at least written with the | |
| 6777 expectation that it's inside of redisplay, and shouldn't try anything | |
| 6778 weird; but that's not the case for menu code (e.g. custom loads huge | |
| 6779 amounts of LISP FILES from a menu handler! FMH!). Safest just to turn | |
| 6780 this off. We could turn it on using UNINHIBIT_QUIT or | |
| 6781 begin_do_check_for_quit() in certain places if we want, if we know | |
| 6782 it's not in an especially tricky place. */ | |
| 6783 begin_dont_check_for_quit (); | |
| 6784 return depth; | |
| 6785 } | |
| 6786 | |
| 6787 void | |
| 6788 exit_redisplay_critical_section (int depth) | |
| 6789 { | |
| 6790 in_display--; | |
| 6791 assert (!in_display); | |
| 6792 unbind_to (depth); | |
| 6793 | |
| 6794 run_post_redisplay_actions (); | |
| 6795 } | |
| 6796 | |
| 6797 /* Enter the redisplay critical section if we're not already in it. This | |
| 6798 is for code that needs frame changes held up and other protections from | |
| 6799 being inside, but doesn't modify the redisplay structures, and doesn't | |
| 6800 look at them in a way that they will be confused by inconsistencies. */ | |
| 6801 | |
| 6802 int | |
| 6803 enter_redisplay_critical_section_maybe (void) | |
| 6804 { | |
| 6805 if (!in_display) | |
| 6806 return enter_redisplay_critical_section (); | |
| 6807 else | |
| 6808 return internal_bind_int (&in_display_nesting, 1 + in_display_nesting); | |
| 6809 } | |
| 6810 | |
| 6811 void | |
| 6812 exit_redisplay_critical_section_maybe (int depth) | |
| 6813 { | |
| 6814 if (in_display_nesting == 1) | |
| 6815 exit_redisplay_critical_section (depth); | |
| 6816 else | |
| 6817 unbind_to (depth); | |
| 6818 } | |
| 6819 | |
| 1279 | 6820 /* Ensure that all windows on the given frame are correctly displayed. |
| 6821 Return non-zero if pre-empted. */ | |
| 428 | 6822 |
| 442 | 6823 int |
| 428 | 6824 redisplay_frame (struct frame *f, int preemption_check) |
| 6825 { | |
| 6826 struct device *d = XDEVICE (f->device); | |
| 853 | 6827 int depth; |
| 428 | 6828 |
| 1279 | 6829 assert (f->init_finished); |
| 6830 | |
| 1318 | 6831 /* NOTE: Without sufficient checks for stream frames, we got weird |
| 6832 crashes in pdump. These came and went very easily -- adding the | |
| 6833 critical-section code for redisplay was enough to trigger them. | |
| 6834 Perhaps I should have debugged them but there didn't seem to be any | |
| 6835 point. --ben */ | |
| 1279 | 6836 if (FRAME_STREAM_P (f)) /* nothing to do */ |
| 6837 return 0; | |
| 6838 | |
| 1318 | 6839 /* Reentrancy into redisplay can be deadly. See stack trace above |
| 6840 generate_displayable_area(). */ | |
| 6841 if (in_display) | |
| 6842 return 1; | |
| 6843 | |
| 545 | 6844 if (preemption_check |
| 6845 && !DEVICE_IMPL_FLAG (d, XDEVIMPF_DONT_PREEMPT_REDISPLAY)) | |
| 428 | 6846 { |
| 6847 /* The preemption check itself takes a lot of time, | |
| 6848 so normally don't do it here. We do it if called | |
| 6849 from Lisp, though (`redisplay-frame'). */ | |
| 6850 int preempted; | |
| 6851 | |
| 6852 REDISPLAY_PREEMPTION_CHECK; | |
| 6853 if (preempted) | |
| 6854 return 1; | |
| 6855 } | |
| 6856 | |
| 442 | 6857 if (!internal_equal (f->old_buffer_alist, f->buffer_alist, 0)) |
| 6858 { | |
| 6859 Lisp_Object frame; | |
| 6860 | |
| 6861 f->old_buffer_alist = Freplace_list (f->old_buffer_alist, | |
| 6862 f->buffer_alist); | |
| 793 | 6863 frame = wrap_frame (f); |
| 442 | 6864 va_run_hook_with_args (Qbuffer_list_changed_hook, 1, frame); |
| 6865 } | |
| 6866 | |
| 428 | 6867 /* Before we put a hold on frame size changes, attempt to process |
| 6868 any which are already pending. */ | |
| 6869 if (f->size_change_pending) | |
| 6870 change_frame_size (f, f->new_height, f->new_width, 0); | |
| 6871 | |
| 6872 /* If frame size might need to be changed, due to changed size | |
| 6873 of toolbars, scrollbars etc, change it now */ | |
| 6874 if (f->size_slipped) | |
| 6875 { | |
| 6876 adjust_frame_size (f); | |
| 6877 assert (!f->size_slipped); | |
| 6878 } | |
| 6879 | |
| 1318 | 6880 /* The menubar, toolbar, and icon updates should be done before |
| 853 | 6881 enter_redisplay_critical_section is called and we are officially |
| 3025 | 6882 `in_display'. They is because they tend to eval Lisp code, which |
| 1318 | 6883 needs to be carefully wrapped within the critical section (and hence |
| 6884 is difficult to debug). */ | |
| 428 | 6885 |
| 6886 #ifdef HAVE_MENUBARS | |
| 6887 /* Update the menubar. It is done first since it could change | |
| 6888 the menubar's visibility. This way we avoid having flashing | |
| 6889 caused by an Expose event generated by the visibility change | |
| 6890 being handled. */ | |
| 6891 update_frame_menubars (f); | |
| 6892 #endif /* HAVE_MENUBARS */ | |
| 6893 #ifdef HAVE_TOOLBARS | |
| 905 | 6894 /* Update the toolbars geometry. We don't update the toolbars |
| 6895 themselves at this point since the space they are trying to | |
| 6896 occupy may currently by occupied by gutter elements. Instead we | |
| 6897 update the geometry, then update the gutter geometry, then update | |
| 6898 the gutters - which will cause mapped windows to be repositioned | |
| 6899 - and finally update the toolbars. */ | |
| 6900 update_frame_toolbars_geometry (f); | |
| 428 | 6901 #endif /* HAVE_TOOLBARS */ |
| 442 | 6902 /* Gutter update proper has to be done inside display when no frame |
| 6903 size changes can occur, thus we separately update the gutter | |
| 6904 geometry here if it needs it. */ | |
| 6905 update_frame_gutter_geometry (f); | |
| 428 | 6906 |
| 6907 /* If we clear the frame we have to force its contents to be redrawn. */ | |
| 6908 if (f->clear) | |
| 6909 f->frame_changed = 1; | |
| 6910 | |
| 442 | 6911 /* Invalidate the subwindow caches. We use subwindows_changed here |
| 6912 to cause subwindows to get instantiated. This is because | |
| 428 | 6913 subwindows_state_changed is less strict - dealing with things |
| 6914 like the clicked state of button. We have to do this before | |
| 6915 redisplaying the gutters as subwindows get unmapped in the | |
| 6916 process.*/ | |
| 442 | 6917 if (f->frame_changed) |
| 6918 reset_frame_subwindow_instance_cache (f); | |
| 6919 | |
| 6920 if (f->frame_changed || f->subwindows_changed) | |
| 6921 { | |
| 428 | 6922 /* we have to do this so the gutter gets regenerated. */ |
| 6923 reset_gutter_display_lines (f); | |
| 6924 } | |
| 6925 | |
| 853 | 6926 depth = enter_redisplay_critical_section (); |
| 428 | 6927 |
| 6928 /* ----------------- BEGIN CRITICAL REDISPLAY SECTION ---------------- */ | |
| 1318 | 6929 |
| 6930 /* See comments in enter_redisplay_critical_section() */ | |
| 428 | 6931 |
| 442 | 6932 MAYBE_DEVMETH (d, frame_output_begin, (f)); |
| 6933 | |
| 6934 /* We can now update the gutters, safe in the knowledge that our | |
| 6935 efforts won't get undone. */ | |
| 6936 | |
| 6937 /* This can call lisp, but redisplay is protected by binding | |
| 6938 inhibit_quit. More importantly the code involving display lines | |
| 6939 *assumes* that GC will not happen and so does not GCPRO | |
| 6940 anything. Since we use this code the whole time with the gutters | |
| 1318 | 6941 we cannot allow GC to happen when manipulating the gutters. |
| 6942 | |
| 6943 This must be inside of the critical section for various reasons. | |
| 6944 For example, it messes with display structures, which be left in | |
| 6945 an inconsistent state. */ | |
| 442 | 6946 update_frame_gutters (f); |
| 6947 | |
| 428 | 6948 /* Erase the frame before outputting its contents. */ |
| 6949 if (f->clear) | |
| 6950 { | |
| 442 | 6951 MAYBE_DEVMETH (d, clear_frame, (f)); |
| 428 | 6952 } |
| 6953 | |
| 6954 /* Do the selected window first. */ | |
| 6955 redisplay_window (FRAME_SELECTED_WINDOW (f), 0); | |
| 6956 | |
| 6957 /* Then do the rest. */ | |
| 6958 redisplay_windows (f->root_window, 1); | |
| 6959 | |
| 442 | 6960 MAYBE_DEVMETH (d, frame_output_end, (f)); |
| 428 | 6961 |
| 6962 update_frame_title (f); | |
| 6963 | |
| 905 | 6964 #ifdef HAVE_TOOLBARS |
| 6965 /* Finally update the toolbars. It seems its possible to get in a | |
| 6966 cycle between updating the gutter and the toolbars. Basically we | |
| 6967 want to end up with both being up-to-date and this doesn't seem | |
| 6968 possible in a single pass. */ | |
| 6969 update_frame_toolbars (f); | |
| 6970 #endif /* HAVE_TOOLBARS */ | |
| 6971 | |
| 428 | 6972 CLASS_RESET_CHANGED_FLAGS (f); |
| 6973 f->window_face_cache_reset = 0; | |
| 6974 f->echo_area_garbaged = 0; | |
| 6975 f->clear = 0; | |
| 6976 | |
| 6977 if (!f->size_change_pending) | |
| 6978 f->size_changed = 0; | |
| 6979 | |
| 6980 /* ----------------- END CRITICAL REDISPLAY SECTION ---------------- */ | |
| 6981 | |
| 853 | 6982 /* Allow frame size changes to occur again. */ |
| 6983 exit_redisplay_critical_section (depth); | |
| 428 | 6984 |
| 6985 return 0; | |
| 6986 } | |
| 6987 | |
| 440 | 6988 /* Ensure that all frames on the given device are correctly displayed. |
| 6989 If AUTOMATIC is non-zero, and the device implementation indicates | |
| 6990 no automatic redisplay, as printers do, then the device is not | |
| 6991 redisplayed. AUTOMATIC is set to zero when called from lisp | |
| 6992 functions (redraw-device) and (redisplay-device), and to non-zero | |
| 6993 when called from "lazy" redisplay(); | |
| 6994 */ | |
| 428 | 6995 |
| 6996 static int | |
| 440 | 6997 redisplay_device (struct device *d, int automatic) |
| 428 | 6998 { |
| 6999 Lisp_Object frame, frmcons; | |
| 7000 int size_change_failed = 0; | |
| 7001 struct frame *f; | |
| 7002 | |
| 545 | 7003 if (automatic && DEVICE_IMPL_FLAG (d, XDEVIMPF_NO_AUTO_REDISPLAY)) |
| 440 | 7004 return 0; |
| 7005 | |
| 428 | 7006 if (DEVICE_STREAM_P (d)) /* nothing to do */ |
| 7007 return 0; | |
| 7008 | |
| 7009 /* It is possible that redisplay has been called before the | |
| 545 | 7010 device is fully initialized, or that the console implementation |
| 7011 allows frameless devices. If so then continue with the next | |
| 7012 device. */ | |
| 428 | 7013 if (NILP (DEVICE_SELECTED_FRAME (d))) |
| 7014 return 0; | |
| 7015 | |
| 545 | 7016 if (!DEVICE_IMPL_FLAG (d, XDEVIMPF_DONT_PREEMPT_REDISPLAY)) |
| 7017 { | |
| 7018 int preempted; | |
| 7019 REDISPLAY_PREEMPTION_CHECK; | |
| 7020 if (preempted) | |
| 7021 return 1; | |
| 7022 } | |
| 428 | 7023 |
| 7024 /* Always do the selected frame first. */ | |
| 7025 frame = DEVICE_SELECTED_FRAME (d); | |
| 7026 | |
| 7027 f = XFRAME (frame); | |
| 7028 | |
| 7029 if (f->icon_changed || f->windows_changed) | |
| 7030 update_frame_icon (f); | |
| 7031 | |
| 7032 if (FRAME_REPAINT_P (f)) | |
| 7033 { | |
| 7034 if (CLASS_REDISPLAY_FLAGS_CHANGEDP(f)) | |
| 7035 { | |
| 588 | 7036 int preempted = redisplay_frame (f, 1); |
| 545 | 7037 if (preempted) |
| 7038 return 1; | |
| 7039 } | |
| 428 | 7040 |
| 7041 /* If the frame redisplay did not get preempted, then this flag | |
| 4187 | 7042 should have gotten set to 0. It might be possible for that |
| 7043 not to happen if a size change event were to occur at an odd | |
| 7044 time. To make sure we don't miss anything we simply don't | |
| 7045 reset the top level flags until the condition ends up being | |
| 7046 in the right state. */ | |
| 428 | 7047 if (f->size_changed) |
| 7048 size_change_failed = 1; | |
| 7049 } | |
| 7050 | |
| 7051 DEVICE_FRAME_LOOP (frmcons, d) | |
| 7052 { | |
| 7053 f = XFRAME (XCAR (frmcons)); | |
| 7054 | |
| 7055 if (f == XFRAME (DEVICE_SELECTED_FRAME (d))) | |
| 7056 continue; | |
| 7057 | |
| 7058 if (f->icon_changed || f->windows_changed) | |
| 7059 update_frame_icon (f); | |
| 7060 | |
| 7061 if (FRAME_REPAINT_P (f)) | |
| 7062 { | |
| 430 | 7063 if (CLASS_REDISPLAY_FLAGS_CHANGEDP (f)) |
| 428 | 7064 { |
| 588 | 7065 int preempted = redisplay_frame (f, 1); |
| 545 | 7066 if (preempted) |
| 7067 return 1; | |
| 428 | 7068 } |
| 7069 | |
| 7070 if (f->size_change_pending) | |
| 7071 size_change_failed = 1; | |
| 7072 } | |
| 7073 } | |
| 7074 | |
| 7075 /* If we get here then we redisplayed all of our frames without | |
| 7076 getting preempted so mark ourselves as clean. */ | |
| 7077 CLASS_RESET_CHANGED_FLAGS (d); | |
| 7078 | |
| 7079 if (!size_change_failed) | |
| 7080 d->size_changed = 0; | |
| 7081 | |
| 7082 return 0; | |
| 7083 } | |
| 7084 | |
| 7085 /* Ensure that all windows on all frames on all devices are displaying | |
| 7086 the current contents of their respective buffers. */ | |
| 7087 | |
| 7088 static void | |
| 7089 redisplay_without_hooks (void) | |
| 7090 { | |
| 7091 Lisp_Object devcons, concons; | |
| 7092 int size_change_failed = 0; | |
| 1292 | 7093 PROFILE_DECLARE (); |
| 7094 | |
| 7095 PROFILE_RECORD_ENTERING_SECTION (QSin_redisplay); | |
| 428 | 7096 |
| 7097 if (asynch_device_change_pending) | |
| 7098 handle_asynch_device_change (); | |
| 7099 | |
| 7100 if (!GLOBAL_REDISPLAY_FLAGS_CHANGEDP && | |
| 430 | 7101 !disable_preemption && preemption_count < max_preempts) |
| 428 | 7102 goto done; |
| 7103 | |
| 7104 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
| 7105 { | |
| 7106 struct device *d = XDEVICE (XCAR (devcons)); | |
| 7107 int preempted; | |
| 7108 | |
| 430 | 7109 if (CLASS_REDISPLAY_FLAGS_CHANGEDP (d)) |
| 428 | 7110 { |
| 440 | 7111 preempted = redisplay_device (d, 1); |
| 428 | 7112 |
| 7113 if (preempted) | |
| 7114 { | |
| 7115 preemption_count++; | |
| 7116 RESET_CHANGED_SET_FLAGS; | |
| 7117 goto done; | |
| 7118 } | |
| 7119 | |
| 7120 /* See comment in redisplay_device. */ | |
| 7121 if (d->size_changed) | |
| 7122 size_change_failed = 1; | |
| 7123 } | |
| 7124 } | |
| 7125 preemption_count = 0; | |
| 7126 | |
| 7127 /* Mark redisplay as accurate */ | |
| 7128 GLOBAL_RESET_CHANGED_FLAGS; | |
| 7129 RESET_CHANGED_SET_FLAGS; | |
| 7130 | |
| 7131 if (faces_changed) | |
| 7132 { | |
| 7133 mark_all_faces_as_clean (); | |
| 7134 faces_changed = 0; | |
| 7135 } | |
| 7136 | |
| 7137 if (!size_change_failed) | |
| 7138 size_changed = 0; | |
| 7139 | |
| 7140 reset_buffer_changes (); | |
| 7141 | |
| 7142 done: | |
| 800 | 7143 #ifdef ERROR_CHECK_DISPLAY |
| 7144 sledgehammer_check_redisplay_structs (); | |
| 7145 #endif /* ERROR_CHECK_DISPLAY */ | |
| 1292 | 7146 |
| 7147 PROFILE_RECORD_EXITING_SECTION (QSin_redisplay); | |
| 428 | 7148 } |
| 7149 | |
| 1318 | 7150 /* Note: All places in the C code that call redisplay() are prepared to |
| 7151 handle GCing, which can happen from run_pre_idle_hook(). However, we | |
| 7152 can't currently handle GC inside the guts of redisplay; see | |
| 7153 enter_redisplay_critical_section(). | |
| 853 | 7154 |
| 7155 (#### What about other external entry points to the redisplay code? | |
| 7156 Someone should go through and make sure that all callers can handle | |
| 7157 GC there, too.) | |
| 7158 */ | |
| 7159 | |
| 428 | 7160 void |
| 7161 redisplay (void) | |
| 7162 { | |
| 853 | 7163 run_pre_idle_hook (); |
| 7164 redisplay_no_pre_idle_hook (); | |
| 7165 } | |
| 7166 | |
| 7167 void | |
| 7168 redisplay_no_pre_idle_hook (void) | |
| 7169 { | |
| 428 | 7170 if (last_display_warning_tick != display_warning_tick && |
| 7171 !inhibit_warning_display) | |
| 7172 { | |
| 7173 /* If an error occurs during this function, oh well. | |
| 4187 | 7174 If we report another warning, we could get stuck in an |
| 428 | 7175 infinite loop reporting warnings. */ |
| 853 | 7176 call0_trapping_problems |
| 7177 (0, Qdisplay_warning_buffer, | |
| 7178 INHIBIT_EXISTING_PERMANENT_DISPLAY_OBJECT_DELETION); | |
| 428 | 7179 last_display_warning_tick = display_warning_tick; |
| 7180 } | |
| 7181 | |
| 7182 redisplay_without_hooks (); | |
| 7183 } | |
| 7184 | |
| 853 | 7185 Lisp_Object |
| 7186 eval_within_redisplay (Lisp_Object dont_trust_this_damn_sucker) | |
| 7187 { | |
| 7188 return | |
| 7189 eval_in_buffer_trapping_problems | |
| 7190 ("Error calling function within redisplay", current_buffer, | |
| 1318 | 7191 dont_trust_this_damn_sucker, 0); |
| 853 | 7192 } |
| 428 | 7193 |
| 7194 /* Efficiently determine the window line number, and return a pointer | |
| 7195 to its printed representation. Do this regardless of whether | |
| 7196 line-number-mode is on. The first line in the buffer is counted as | |
| 7197 1. If narrowing is in effect, the lines are counted from the | |
| 7198 beginning of the visible portion of the buffer. */ | |
| 7199 static char * | |
| 7200 window_line_number (struct window *w, int type) | |
| 7201 { | |
| 7202 struct device *d = XDEVICE (XFRAME (w->frame)->device); | |
| 7203 struct buffer *b = XBUFFER (w->buffer); | |
| 7204 /* Be careful in the order of these tests. The first clause will | |
| 7205 fail if DEVICE_SELECTED_FRAME == Qnil (since w->frame cannot be). | |
| 7206 This can occur when the frame title is computed really early */ | |
| 665 | 7207 Charbpos pos = |
| 428 | 7208 ((EQ(DEVICE_SELECTED_FRAME(d), w->frame) && |
| 7209 (w == XWINDOW (FRAME_SELECTED_WINDOW (device_selected_frame(d)))) && | |
| 7210 EQ(DEVICE_CONSOLE(d), Vselected_console) && | |
| 7211 XDEVICE(CONSOLE_SELECTED_DEVICE(XCONSOLE(DEVICE_CONSOLE(d)))) == d ) | |
| 7212 ? BUF_PT (b) | |
| 7213 : marker_position (w->pointm[type])); | |
| 7214 EMACS_INT line; | |
| 7215 | |
| 7216 line = buffer_line_number (b, pos, 1); | |
| 7217 | |
| 603 | 7218 { |
| 7219 static char window_line_number_buf[DECIMAL_PRINT_SIZE (long)]; | |
| 7220 | |
| 7221 long_to_string (window_line_number_buf, line + 1); | |
| 7222 | |
| 7223 return window_line_number_buf; | |
| 7224 } | |
| 428 | 7225 } |
| 7226 | |
| 7227 | |
| 7228 /* Given a character representing an object in a modeline | |
| 7229 specification, return a string (stored into the global array | |
| 867 | 7230 `mode_spec_ibyte_string') with the information that object |
| 428 | 7231 represents. |
| 7232 | |
| 7233 This function is largely unchanged from previous versions of the | |
| 7234 redisplay engine. | |
| 7235 | |
| 7236 Warning! This code is also used for frame titles and can be called | |
| 7237 very early in the device/frame update process! JV | |
| 7238 */ | |
| 7239 | |
| 7240 static void | |
| 867 | 7241 decode_mode_spec (struct window *w, Ichar spec, int type) |
| 428 | 7242 { |
| 7243 Lisp_Object obj = Qnil; | |
| 442 | 7244 const char *str = NULL; |
| 428 | 7245 struct buffer *b = XBUFFER (w->buffer); |
| 7246 | |
| 867 | 7247 Dynarr_reset (mode_spec_ibyte_string); |
| 428 | 7248 |
| 7249 switch (spec) | |
| 7250 { | |
| 7251 /* print buffer name */ | |
| 7252 case 'b': | |
| 7253 obj = b->name; | |
| 7254 break; | |
| 7255 | |
| 7256 /* print visited file name */ | |
| 7257 case 'f': | |
| 7258 obj = b->filename; | |
| 7259 break; | |
| 7260 | |
| 7261 /* print the current column */ | |
| 7262 case 'c': | |
| 7263 { | |
| 4187 | 7264 Charbpos pt = (w == XWINDOW (Fselected_window (Qnil))) |
| 7265 ? BUF_PT (b) | |
| 7266 : marker_position (w->pointm[type]); | |
| 428 | 7267 int col = column_at_point (b, pt, 1) + !!column_number_start_at_one; |
| 603 | 7268 char buf[DECIMAL_PRINT_SIZE (long)]; |
| 428 | 7269 |
| 7270 long_to_string (buf, col); | |
| 7271 | |
| 867 | 7272 Dynarr_add_many (mode_spec_ibyte_string, |
| 7273 (const Ibyte *) buf, strlen (buf)); | |
| 428 | 7274 |
| 7275 goto decode_mode_spec_done; | |
| 7276 } | |
| 7277 /* print the file coding system */ | |
| 7278 case 'C': | |
| 7279 { | |
| 4187 | 7280 Lisp_Object codesys = b->buffer_file_coding_system; |
| 7281 /* Be very careful here not to get an error. */ | |
| 428 | 7282 if (NILP (codesys) || SYMBOLP (codesys) || CODING_SYSTEMP (codesys)) |
| 4187 | 7283 { |
| 7284 codesys = find_coding_system_for_text_file (codesys, 0); | |
| 428 | 7285 if (CODING_SYSTEMP (codesys)) |
| 4187 | 7286 obj = XCODING_SYSTEM_MNEMONIC (codesys); |
| 7287 } | |
| 428 | 7288 } |
| 7289 break; | |
| 7290 | |
| 7291 /* print the current line number */ | |
| 7292 case 'l': | |
| 7293 str = window_line_number (w, type); | |
| 7294 break; | |
| 7295 | |
| 7296 /* print value of mode-name (obsolete) */ | |
| 7297 case 'm': | |
| 7298 obj = b->mode_name; | |
| 7299 break; | |
| 7300 | |
| 7301 /* print hyphen and frame number, if != 1 */ | |
| 7302 case 'N': | |
| 7303 #ifdef HAVE_TTY | |
| 7304 { | |
| 7305 struct frame *f = XFRAME (w->frame); | |
| 7306 if (FRAME_TTY_P (f) && f->order_count > 1 && f->order_count <= 99999999) | |
| 7307 { | |
| 7308 /* Naughty, naughty */ | |
| 7309 char * writable_str = alloca_array (char, 10); | |
| 7310 sprintf (writable_str, "-%d", f->order_count); | |
| 7311 str = writable_str; | |
| 7312 } | |
| 7313 } | |
| 7314 #endif /* HAVE_TTY */ | |
| 7315 break; | |
| 7316 | |
| 7317 /* print Narrow if appropriate */ | |
| 7318 case 'n': | |
| 7319 if (BUF_BEGV (b) > BUF_BEG (b) | |
| 7320 || BUF_ZV (b) < BUF_Z (b)) | |
| 7321 str = " Narrow"; | |
| 7322 break; | |
| 7323 | |
| 7324 /* print %, * or hyphen, if buffer is read-only, modified or neither */ | |
| 7325 case '*': | |
| 7326 str = (!NILP (b->read_only) | |
| 7327 ? "%" | |
| 7328 : ((BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) | |
| 7329 ? "*" | |
| 7330 : "-")); | |
| 7331 break; | |
| 7332 | |
| 7333 /* print * or hyphen -- XEmacs change to allow a buffer to be | |
| 4187 | 7334 read-only but still indicate whether it is modified. */ |
| 428 | 7335 case '+': |
| 7336 str = ((BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) | |
| 7337 ? "*" | |
| 7338 : (!NILP (b->read_only) | |
| 7339 ? "%" | |
| 7340 : "-")); | |
| 7341 break; | |
| 7342 | |
| 7343 /* #### defined in 19.29 decode_mode_spec, but not in | |
| 4187 | 7344 modeline-format doc string. */ |
| 428 | 7345 /* This differs from %* in that it ignores read-only-ness. */ |
| 7346 case '&': | |
| 7347 str = ((BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) | |
| 7348 ? "*" | |
| 7349 : "-"); | |
| 7350 break; | |
| 7351 | |
| 7352 /* print process status */ | |
| 7353 case 's': | |
| 7354 obj = Fget_buffer_process (w->buffer); | |
| 7355 if (NILP (obj)) | |
| 7356 str = GETTEXT ("no process"); | |
| 7357 else | |
| 7358 obj = Fsymbol_name (Fprocess_status (obj)); | |
| 7359 break; | |
| 7360 | |
| 7361 /* Print name of selected frame. */ | |
| 7362 case 'S': | |
| 7363 obj = XFRAME (w->frame)->name; | |
| 7364 break; | |
| 7365 | |
| 7366 /* indicate TEXT or BINARY */ | |
| 7367 case 't': | |
| 7368 /* #### NT does not use this any more. Now what? */ | |
| 7369 str = "T"; | |
| 7370 break; | |
| 7371 | |
| 7372 /* print percent of buffer above top of window, or Top, Bot or All */ | |
| 7373 case 'p': | |
| 7374 { | |
| 665 | 7375 Charbpos pos = marker_position (w->start[type]); |
| 428 | 7376 |
| 7377 /* This had better be while the desired lines are being done. */ | |
| 7378 if (w->window_end_pos[type] <= BUF_Z (b) - BUF_ZV (b)) | |
| 7379 { | |
| 7380 if (pos <= BUF_BEGV (b)) | |
| 7381 str = "All"; | |
| 7382 else | |
| 7383 str = "Bottom"; | |
| 7384 } | |
| 7385 else if (pos <= BUF_BEGV (b)) | |
| 7386 str = "Top"; | |
| 7387 else | |
| 7388 { | |
| 7389 /* This hard limit is ok since the string it will hold has a | |
| 4187 | 7390 fixed maximum length of 3. But just to be safe... */ |
| 428 | 7391 char buf[10]; |
| 7392 Charcount chars = pos - BUF_BEGV (b); | |
| 7393 Charcount total = BUF_ZV (b) - BUF_BEGV (b); | |
| 7394 | |
| 7395 /* Avoid overflow on big buffers */ | |
| 7396 int percent = total > LONG_MAX/200 ? | |
| 7397 (chars + total/200) / (total / 100) : | |
| 7398 (chars * 100 + total/2) / total; | |
| 7399 | |
| 7400 /* We can't normally display a 3-digit number, so get us a | |
| 4187 | 7401 2-digit number that is close. */ |
| 428 | 7402 if (percent == 100) |
| 7403 percent = 99; | |
| 7404 | |
| 7405 sprintf (buf, "%d%%", percent); | |
| 867 | 7406 Dynarr_add_many (mode_spec_ibyte_string, (Ibyte *) buf, |
| 428 | 7407 strlen (buf)); |
| 7408 | |
| 7409 goto decode_mode_spec_done; | |
| 7410 } | |
| 7411 break; | |
| 7412 } | |
| 7413 | |
| 7414 /* print percent of buffer above bottom of window, perhaps plus | |
| 7415 Top, or print Bottom or All */ | |
| 7416 case 'P': | |
| 7417 { | |
| 665 | 7418 Charbpos toppos = marker_position (w->start[type]); |
| 7419 Charbpos botpos = BUF_Z (b) - w->window_end_pos[type]; | |
| 428 | 7420 |
| 7421 /* botpos is only accurate as of the last redisplay, so we can | |
| 4187 | 7422 only treat it as a hint. In particular, after erase-buffer, |
| 7423 botpos may be negative. */ | |
| 428 | 7424 if (botpos < toppos) |
| 7425 botpos = toppos; | |
| 7426 | |
| 7427 if (botpos >= BUF_ZV (b)) | |
| 7428 { | |
| 7429 if (toppos <= BUF_BEGV (b)) | |
| 7430 str = "All"; | |
| 7431 else | |
| 7432 str = "Bottom"; | |
| 7433 } | |
| 7434 else | |
| 7435 { | |
| 7436 /* This hard limit is ok since the string it will hold has a | |
| 4187 | 7437 fixed maximum length of around 6. But just to be safe... */ |
| 428 | 7438 char buf[10]; |
| 7439 Charcount chars = botpos - BUF_BEGV (b); | |
| 7440 Charcount total = BUF_ZV (b) - BUF_BEGV (b); | |
| 7441 | |
| 7442 /* Avoid overflow on big buffers */ | |
| 7443 int percent = total > LONG_MAX/200 ? | |
| 7444 (chars + total/200) / (total / 100) : | |
| 7445 (chars * 100 + total/2) / max (total, 1); | |
| 7446 | |
| 7447 /* We can't normally display a 3-digit number, so get us a | |
| 4187 | 7448 2-digit number that is close. */ |
| 428 | 7449 if (percent == 100) |
| 7450 percent = 99; | |
| 7451 | |
| 7452 if (toppos <= BUF_BEGV (b)) | |
| 7453 sprintf (buf, "Top%d%%", percent); | |
| 7454 else | |
| 7455 sprintf (buf, "%d%%", percent); | |
| 7456 | |
| 867 | 7457 Dynarr_add_many (mode_spec_ibyte_string, (Ibyte *) buf, |
| 428 | 7458 strlen (buf)); |
| 7459 | |
| 7460 goto decode_mode_spec_done; | |
| 7461 } | |
| 7462 break; | |
| 7463 } | |
| 7464 | |
| 7465 /* print % */ | |
| 7466 case '%': | |
| 7467 str = "%"; | |
| 7468 break; | |
| 7469 | |
| 7470 /* print one [ for each recursive editing level. */ | |
| 7471 case '[': | |
| 7472 { | |
| 7473 int i; | |
| 7474 | |
| 7475 if (command_loop_level > 5) | |
| 7476 { | |
| 7477 str = "[[[... "; | |
| 7478 break; | |
| 7479 } | |
| 7480 | |
| 7481 for (i = 0; i < command_loop_level; i++) | |
| 867 | 7482 Dynarr_add (mode_spec_ibyte_string, '['); |
| 428 | 7483 |
| 7484 goto decode_mode_spec_done; | |
| 7485 } | |
| 7486 | |
| 7487 /* print one ] for each recursive editing level. */ | |
| 7488 case ']': | |
| 7489 { | |
| 7490 int i; | |
| 7491 | |
| 7492 if (command_loop_level > 5) | |
| 7493 { | |
| 7494 str = "...]]]"; | |
| 7495 break; | |
| 7496 } | |
| 7497 | |
| 7498 for (i = 0; i < command_loop_level; i++) | |
| 867 | 7499 Dynarr_add (mode_spec_ibyte_string, ']'); |
| 428 | 7500 |
| 7501 goto decode_mode_spec_done; | |
| 7502 } | |
| 7503 | |
| 7504 /* print infinitely many dashes -- handle at top level now */ | |
| 7505 case '-': | |
| 7506 break; | |
| 7507 | |
| 7508 } | |
| 7509 | |
| 7510 if (STRINGP (obj)) | |
| 867 | 7511 Dynarr_add_many (mode_spec_ibyte_string, |
| 428 | 7512 XSTRING_DATA (obj), |
| 7513 XSTRING_LENGTH (obj)); | |
| 7514 else if (str) | |
| 867 | 7515 Dynarr_add_many (mode_spec_ibyte_string, (Ibyte *) str, strlen (str)); |
| 428 | 7516 |
| 7517 decode_mode_spec_done: | |
| 867 | 7518 Dynarr_add (mode_spec_ibyte_string, '\0'); |
| 428 | 7519 } |
| 7520 | |
| 7521 /* Given a display line, free all of its data structures. */ | |
| 7522 | |
| 7523 static void | |
| 7524 free_display_line (struct display_line *dl) | |
| 7525 { | |
| 7526 int block; | |
| 7527 | |
| 7528 if (dl->display_blocks) | |
| 7529 { | |
| 7530 for (block = 0; block < Dynarr_largest (dl->display_blocks); block++) | |
| 4187 | 7531 { |
| 428 | 7532 struct display_block *db = Dynarr_atp (dl->display_blocks, block); |
| 7533 | |
| 7534 Dynarr_free (db->runes); | |
| 7535 } | |
| 7536 | |
| 7537 Dynarr_free (dl->display_blocks); | |
| 7538 dl->display_blocks = NULL; | |
| 7539 } | |
| 7540 | |
| 7541 if (dl->left_glyphs) | |
| 7542 { | |
| 7543 Dynarr_free (dl->left_glyphs); | |
| 7544 dl->left_glyphs = NULL; | |
| 7545 } | |
| 7546 | |
| 7547 if (dl->right_glyphs) | |
| 7548 { | |
| 7549 Dynarr_free (dl->right_glyphs); | |
| 7550 dl->right_glyphs = NULL; | |
| 7551 } | |
| 7552 } | |
| 7553 | |
| 7554 | |
| 7555 /* Given an array of display lines, free them and all data structures | |
| 7556 contained within them. */ | |
| 7557 | |
| 7558 void | |
| 7559 free_display_lines (display_line_dynarr *dla) | |
| 7560 { | |
| 7561 int line; | |
| 7562 | |
| 7563 for (line = 0; line < Dynarr_largest (dla); line++) | |
| 7564 { | |
| 7565 free_display_line (Dynarr_atp (dla, line)); | |
| 7566 } | |
| 7567 | |
| 7568 Dynarr_free (dla); | |
| 7569 } | |
| 7570 | |
| 7571 /* Call internal free routine for each set of display lines. */ | |
| 7572 | |
| 7573 void | |
| 7574 free_display_structs (struct window_mirror *mir) | |
| 7575 { | |
| 7576 if (mir->current_display_lines) | |
| 7577 { | |
| 7578 free_display_lines (mir->current_display_lines); | |
| 7579 mir->current_display_lines = 0; | |
| 7580 } | |
| 7581 | |
| 7582 if (mir->desired_display_lines) | |
| 7583 { | |
| 7584 free_display_lines (mir->desired_display_lines); | |
| 7585 mir->desired_display_lines = 0; | |
| 7586 } | |
| 7587 } | |
| 7588 | |
| 7589 | |
| 7590 static void | |
| 7591 mark_glyph_block_dynarr (glyph_block_dynarr *gba) | |
| 7592 { | |
| 7593 if (gba) | |
| 7594 { | |
| 7595 glyph_block *gb = Dynarr_atp (gba, 0); | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
7596 glyph_block *gb_last = Dynarr_past_lastp (gba); |
| 428 | 7597 |
| 7598 for (; gb < gb_last; gb++) | |
| 7599 { | |
| 7600 if (!NILP (gb->glyph)) | |
| 7601 mark_object (gb->glyph); | |
| 7602 if (!NILP (gb->extent)) | |
| 7603 mark_object (gb->extent); | |
| 7604 } | |
| 7605 } | |
| 7606 } | |
| 7607 | |
| 442 | 7608 /* See the comment in image_instantiate_cache_result as to why marking |
| 7609 the glyph will also mark the image_instance. */ | |
| 7610 void | |
| 428 | 7611 mark_redisplay_structs (display_line_dynarr *dla) |
| 7612 { | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
7613 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
|
7614 display_line *dl_last = Dynarr_past_lastp (dla); |
| 428 | 7615 |
| 7616 for (; dl < dl_last; dl++) | |
| 7617 { | |
| 7618 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
|
7619 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
|
7620 display_block *db_last = Dynarr_past_lastp (dba); |
| 428 | 7621 |
| 7622 for (; db < db_last; db++) | |
| 7623 { | |
| 7624 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
|
7625 rune *r = Dynarr_begin (ra); |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
7626 rune *r_last = Dynarr_past_lastp (ra); |
| 428 | 7627 |
| 7628 for (; r < r_last; r++) | |
| 7629 { | |
| 7630 if (r->type == RUNE_DGLYPH) | |
| 7631 { | |
| 7632 if (!NILP (r->object.dglyph.glyph)) | |
| 7633 mark_object (r->object.dglyph.glyph); | |
| 7634 if (!NILP (r->object.dglyph.extent)) | |
| 7635 mark_object (r->object.dglyph.extent); | |
| 7636 } | |
| 7637 } | |
| 7638 } | |
| 7639 | |
| 7640 mark_glyph_block_dynarr (dl->left_glyphs); | |
| 7641 mark_glyph_block_dynarr (dl->right_glyphs); | |
| 7642 } | |
| 7643 } | |
| 7644 | |
| 7645 | |
| 2367 | 7646 |
| 7647 /* | |
| 7648 | |
| 7649 Info on line-start cache: | |
| 7650 | |
| 7651 (Info-goto-node "(internals)Line Start Cache") | |
| 7652 */ | |
| 428 | 7653 |
| 7654 /* This will get used quite a bit so we don't want to be constantly | |
| 7655 allocating and freeing it. */ | |
| 7656 static line_start_cache_dynarr *internal_cache; | |
| 7657 | |
| 7658 /* Makes internal_cache represent the TYPE display structs and only | |
| 7659 the TYPE display structs. */ | |
| 7660 | |
| 7661 static void | |
| 7662 update_internal_cache_list (struct window *w, int type) | |
| 7663 { | |
| 7664 int line; | |
| 7665 display_line_dynarr *dla = window_display_lines (w, type); | |
| 7666 | |
| 7667 Dynarr_reset (internal_cache); | |
| 7668 for (line = 0; line < Dynarr_length (dla); line++) | |
| 7669 { | |
| 7670 struct display_line *dl = Dynarr_atp (dla, line); | |
| 7671 | |
| 7672 if (dl->modeline) | |
| 7673 continue; | |
| 7674 else | |
| 7675 { | |
| 7676 struct line_start_cache lsc; | |
| 434 | 7677 |
| 826 | 7678 lsc.start = dl->charpos; |
| 7679 lsc.end = dl->end_charpos; | |
| 428 | 7680 lsc.height = dl->ascent + dl->descent; |
| 7681 | |
| 7682 Dynarr_add (internal_cache, lsc); | |
| 7683 } | |
| 7684 } | |
| 7685 } | |
| 7686 | |
| 7687 /* Reset the line cache if necessary. This should be run at the | |
| 7688 beginning of any function which access the cache. */ | |
| 7689 | |
| 7690 static void | |
| 7691 validate_line_start_cache (struct window *w) | |
| 7692 { | |
| 7693 struct buffer *b = XBUFFER (w->buffer); | |
| 7694 struct frame *f = XFRAME (w->frame); | |
| 7695 | |
| 7696 if (!w->line_cache_validation_override) | |
| 7697 { | |
| 7698 /* f->extents_changed used to be in here because extent face and | |
| 4187 | 7699 size changes can cause text shifting. However, the extent |
| 7700 covering the region is constantly having its face set and | |
| 7701 priority altered by the mouse code. This means that the line | |
| 7702 start cache is constantly being invalidated. This is bad | |
| 7703 since the mouse code also triggers heavy usage of the cache. | |
| 7704 Since it is an unlikely that f->extents being changed | |
| 7705 indicates that the cache really needs to be updated and if it | |
| 7706 does redisplay will catch it pretty quickly we no longer | |
| 7707 invalidate the cache if it is set. This greatly speeds up | |
| 7708 dragging out regions with the mouse. */ | |
| 428 | 7709 if (XINT (w->line_cache_last_updated) < BUF_MODIFF (b) |
| 7710 || f->faces_changed | |
| 7711 || f->clip_changed) | |
| 7712 { | |
| 7713 Dynarr_reset (w->line_start_cache); | |
| 7714 } | |
| 7715 } | |
| 7716 } | |
| 7717 | |
| 7718 /* Return the very first buffer position contained in the given | |
| 7719 window's cache, or -1 if the cache is empty. Assumes that the | |
| 7720 cache is valid. */ | |
| 7721 | |
| 665 | 7722 static Charbpos |
| 428 | 7723 line_start_cache_start (struct window *w) |
| 7724 { | |
| 7725 line_start_cache_dynarr *cache = w->line_start_cache; | |
| 7726 | |
| 7727 if (!Dynarr_length (cache)) | |
| 7728 return -1; | |
| 7729 else | |
| 7730 return Dynarr_atp (cache, 0)->start; | |
| 7731 } | |
| 7732 | |
| 7733 /* Return the very last buffer position contained in the given | |
| 7734 window's cache, or -1 if the cache is empty. Assumes that the | |
| 7735 cache is valid. */ | |
| 7736 | |
| 665 | 7737 static Charbpos |
| 428 | 7738 line_start_cache_end (struct window *w) |
| 7739 { | |
| 7740 line_start_cache_dynarr *cache = w->line_start_cache; | |
| 7741 | |
| 7742 if (!Dynarr_length (cache)) | |
| 7743 return -1; | |
| 7744 else | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
7745 return Dynarr_lastp (cache)->end; |
| 428 | 7746 } |
| 7747 | |
| 7748 /* Return the index of the line POINT is contained within in window | |
| 7749 W's line start cache. It will enlarge the cache or move the cache | |
| 7750 window in order to have POINT be present in the cache. MIN_PAST is | |
| 7751 a guarantee of the number of entries in the cache present on either | |
| 7752 side of POINT (unless a buffer boundary is hit). If MIN_PAST is -1 | |
| 7753 then it will be treated as 0, but the cache window will not be | |
| 7754 allowed to shift. Returns -1 if POINT cannot be found in the cache | |
| 7755 for any reason. */ | |
| 7756 | |
| 7757 int | |
| 665 | 7758 point_in_line_start_cache (struct window *w, Charbpos point, int min_past) |
| 428 | 7759 { |
| 7760 struct buffer *b = XBUFFER (w->buffer); | |
| 7761 line_start_cache_dynarr *cache = w->line_start_cache; | |
| 647 | 7762 int top, bottom, pos; |
| 428 | 7763 |
| 7764 validate_line_start_cache (w); | |
| 7765 w->line_cache_validation_override++; | |
| 7766 | |
| 7767 /* Let functions pass in negative values, but we still treat -1 | |
| 7768 specially. */ | |
| 7769 /* #### bogosity alert */ | |
| 7770 if (min_past < 0 && min_past != -1) | |
| 7771 min_past = -min_past; | |
| 7772 | |
| 7773 if (!Dynarr_length (cache) || line_start_cache_start (w) > point | |
| 7774 || line_start_cache_end (w) < point) | |
| 7775 { | |
| 7776 int loop; | |
| 7777 int win_char_height = window_char_height (w, 1); | |
| 7778 | |
| 7779 /* Occasionally we get here with a 0 height | |
| 4187 | 7780 window. find_next_newline_no_quit will abort if we pass it a |
| 7781 count of 0 so handle that case. */ | |
| 428 | 7782 if (!win_char_height) |
| 7783 win_char_height = 1; | |
| 7784 | |
| 7785 if (!Dynarr_length (cache)) | |
| 7786 { | |
| 665 | 7787 Charbpos from = find_next_newline_no_quit (b, point, -1); |
| 7788 Charbpos to = find_next_newline_no_quit (b, from, win_char_height); | |
| 428 | 7789 |
| 7790 update_line_start_cache (w, from, to, point, 0); | |
| 7791 | |
| 7792 if (!Dynarr_length (cache)) | |
| 7793 { | |
| 7794 w->line_cache_validation_override--; | |
| 7795 return -1; | |
| 7796 } | |
| 7797 } | |
| 7798 | |
| 7799 assert (Dynarr_length (cache)); | |
| 7800 | |
| 7801 loop = 0; | |
| 7802 while (line_start_cache_start (w) > point | |
| 7803 && (loop < cache_adjustment || min_past == -1)) | |
| 7804 { | |
| 665 | 7805 Charbpos from, to; |
| 428 | 7806 |
| 7807 from = line_start_cache_start (w); | |
| 7808 if (from <= BUF_BEGV (b)) | |
| 7809 break; | |
| 7810 | |
| 7811 from = find_next_newline_no_quit (b, from, -win_char_height); | |
| 7812 to = line_start_cache_end (w); | |
| 7813 | |
| 7814 update_line_start_cache (w, from, to, point, 0); | |
| 7815 loop++; | |
| 7816 } | |
| 7817 | |
| 7818 if (line_start_cache_start (w) > point) | |
| 7819 { | |
| 665 | 7820 Charbpos from, to; |
| 428 | 7821 |
| 7822 from = find_next_newline_no_quit (b, point, -1); | |
| 7823 if (from >= BUF_ZV (b)) | |
| 7824 { | |
| 7825 to = find_next_newline_no_quit (b, from, -win_char_height); | |
| 7826 from = to; | |
| 7827 to = BUF_ZV (b); | |
| 7828 } | |
| 7829 else | |
| 7830 to = find_next_newline_no_quit (b, from, win_char_height); | |
| 7831 | |
| 7832 update_line_start_cache (w, from, to, point, 0); | |
| 7833 } | |
| 7834 | |
| 7835 loop = 0; | |
| 7836 while (line_start_cache_end (w) < point | |
| 7837 && (loop < cache_adjustment || min_past == -1)) | |
| 7838 { | |
| 665 | 7839 Charbpos from, to; |
| 428 | 7840 |
| 7841 to = line_start_cache_end (w); | |
| 7842 if (to >= BUF_ZV (b)) | |
| 7843 break; | |
| 7844 | |
| 7845 from = line_start_cache_end (w); | |
| 7846 to = find_next_newline_no_quit (b, from, win_char_height); | |
| 7847 | |
| 7848 update_line_start_cache (w, from, to, point, 0); | |
| 7849 loop++; | |
| 7850 } | |
| 7851 | |
| 7852 if (line_start_cache_end (w) < point) | |
| 7853 { | |
| 665 | 7854 Charbpos from, to; |
| 428 | 7855 |
| 7856 from = find_next_newline_no_quit (b, point, -1); | |
| 7857 if (from >= BUF_ZV (b)) | |
| 7858 { | |
| 7859 to = find_next_newline_no_quit (b, from, -win_char_height); | |
| 7860 from = to; | |
| 7861 to = BUF_ZV (b); | |
| 7862 } | |
| 7863 else | |
| 7864 to = find_next_newline_no_quit (b, from, win_char_height); | |
| 7865 | |
| 7866 update_line_start_cache (w, from, to, point, 0); | |
| 7867 } | |
| 7868 } | |
| 7869 | |
| 7870 assert (Dynarr_length (cache)); | |
| 7871 | |
| 7872 if (min_past == -1) | |
| 7873 min_past = 0; | |
| 7874 | |
| 7875 /* This could happen if the buffer is narrowed. */ | |
| 7876 if (line_start_cache_start (w) > point | |
| 7877 || line_start_cache_end (w) < point) | |
| 7878 { | |
| 7879 w->line_cache_validation_override--; | |
| 7880 return -1; | |
| 7881 } | |
| 7882 | |
| 7883 find_point_loop: | |
| 7884 | |
| 7885 top = Dynarr_length (cache) - 1; | |
| 7886 bottom = 0; | |
| 7887 | |
| 7888 while (1) | |
| 7889 { | |
| 647 | 7890 int new_pos; |
| 665 | 7891 Charbpos start, end; |
| 428 | 7892 |
| 7893 pos = (bottom + top + 1) >> 1; | |
| 7894 start = Dynarr_atp (cache, pos)->start; | |
| 7895 end = Dynarr_atp (cache, pos)->end; | |
| 7896 | |
| 7897 if (point >= start && point <= end) | |
| 7898 { | |
| 7899 if (pos < min_past && line_start_cache_start (w) > BUF_BEGV (b)) | |
| 7900 { | |
| 665 | 7901 Charbpos from = |
| 428 | 7902 find_next_newline_no_quit (b, line_start_cache_start (w), |
| 7903 -min_past - 1); | |
| 665 | 7904 Charbpos to = line_start_cache_end (w); |
| 428 | 7905 |
| 7906 update_line_start_cache (w, from, to, point, 0); | |
| 7907 goto find_point_loop; | |
| 7908 } | |
| 7909 else if ((Dynarr_length (cache) - pos - 1) < min_past | |
| 7910 && line_start_cache_end (w) < BUF_ZV (b)) | |
| 7911 { | |
| 665 | 7912 Charbpos from = line_start_cache_end (w); |
| 7913 Charbpos to = find_next_newline_no_quit (b, from, | |
| 428 | 7914 (min_past |
| 7915 ? min_past | |
| 7916 : 1)); | |
| 7917 | |
| 7918 update_line_start_cache (w, from, to, point, 0); | |
| 7919 goto find_point_loop; | |
| 7920 } | |
| 7921 else | |
| 7922 { | |
| 7923 w->line_cache_validation_override--; | |
| 7924 return pos; | |
| 7925 } | |
| 7926 } | |
| 7927 else if (point > end) | |
| 7928 bottom = pos + 1; | |
| 7929 else if (point < start) | |
| 7930 top = pos - 1; | |
| 7931 else | |
| 2500 | 7932 ABORT (); |
| 428 | 7933 |
| 7934 new_pos = (bottom + top + 1) >> 1; | |
| 7935 if (pos == new_pos) | |
| 7936 { | |
| 7937 w->line_cache_validation_override--; | |
| 7938 return -1; | |
| 7939 } | |
| 7940 } | |
| 7941 } | |
| 7942 | |
| 7943 /* Return a boolean indicating if POINT would be visible in window W | |
| 1708 | 7944 if display of the window was to begin at STARTP. If PARTIALLY is |
| 7945 zero, then if POINT has fewer visible pixels than the window clip, | |
| 7946 0 is returned; otherwise, 1 is returned if POINT has any visible | |
| 7947 pixels. */ | |
| 428 | 7948 int |
| 1708 | 7949 point_would_be_visible (struct window *w, Charbpos startp, Charbpos point, |
| 7950 int partially) | |
| 428 | 7951 { |
| 7952 struct buffer *b = XBUFFER (w->buffer); | |
| 430 | 7953 int pixpos = -WINDOW_TEXT_TOP_CLIP(w); |
| 428 | 7954 int bottom = WINDOW_TEXT_HEIGHT (w); |
| 7955 int start_elt; | |
| 7956 | |
| 7957 /* If point is before the intended start it obviously can't be visible. */ | |
| 7958 if (point < startp) | |
| 7959 return 0; | |
| 7960 | |
| 7961 /* If point or start are not in the accessible buffer range, then | |
| 7962 fail. */ | |
| 7963 if (startp < BUF_BEGV (b) || startp > BUF_ZV (b) | |
| 7964 || point < BUF_BEGV (b) || point > BUF_ZV (b)) | |
| 7965 return 0; | |
| 7966 | |
| 7967 validate_line_start_cache (w); | |
| 7968 w->line_cache_validation_override++; | |
| 7969 | |
| 7970 start_elt = point_in_line_start_cache (w, startp, 0); | |
| 7971 if (start_elt == -1) | |
| 7972 { | |
| 7973 w->line_cache_validation_override--; | |
| 7974 return 0; | |
| 7975 } | |
| 7976 | |
| 7977 assert (line_start_cache_start (w) <= startp | |
| 7978 && line_start_cache_end (w) >= startp); | |
| 7979 | |
| 7980 while (1) | |
| 7981 { | |
| 7982 int height; | |
| 7983 | |
| 7984 /* Expand the cache if necessary. */ | |
| 7985 if (start_elt == Dynarr_length (w->line_start_cache)) | |
| 7986 { | |
| 665 | 7987 Charbpos old_startp = |
| 428 | 7988 Dynarr_atp (w->line_start_cache, start_elt - 1)->start; |
| 7989 | |
| 7990 start_elt = point_in_line_start_cache (w, old_startp, | |
| 7991 window_char_height (w, 0)); | |
| 7992 | |
| 7993 /* We've already actually processed old_startp, so increment | |
| 4187 | 7994 immediately. */ |
| 428 | 7995 start_elt++; |
| 7996 | |
| 7997 /* If this happens we didn't add any extra elements. Bummer. */ | |
| 7998 if (start_elt == Dynarr_length (w->line_start_cache)) | |
| 7999 { | |
| 8000 w->line_cache_validation_override--; | |
| 8001 return 0; | |
| 8002 } | |
| 8003 } | |
| 8004 | |
| 8005 height = Dynarr_atp (w->line_start_cache, start_elt)->height; | |
| 8006 | |
| 8007 if (pixpos + height > bottom) | |
| 8008 { | |
| 1708 | 8009 if (bottom - pixpos < (partially ? 0 : VERTICAL_CLIP (w, 0))) |
| 428 | 8010 { |
| 8011 w->line_cache_validation_override--; | |
| 8012 return 0; | |
| 8013 } | |
| 8014 } | |
| 8015 | |
| 8016 pixpos += height; | |
| 8017 if (point <= Dynarr_atp (w->line_start_cache, start_elt)->end) | |
| 8018 { | |
| 8019 w->line_cache_validation_override--; | |
| 8020 return 1; | |
| 8021 } | |
| 8022 | |
| 8023 start_elt++; | |
| 8024 } | |
| 8025 } | |
| 8026 | |
| 8027 /* For the given window W, if display starts at STARTP, what will be | |
| 8028 the buffer position at the beginning or end of the last line | |
| 8029 displayed. The end of the last line is also know as the window end | |
| 8030 position. | |
| 8031 | |
| 442 | 8032 WARNING: It is possible that redisplay failed to layout any lines for the |
| 8033 windows. Under normal circumstances this is rare. However it seems that it | |
| 8034 does occur in the following situation: A mouse event has come in and we | |
| 8035 need to compute its location in a window. That code (in | |
| 8036 pixel_to_glyph_translation) already can handle 0 as an error return value. | |
| 8037 | |
| 428 | 8038 #### With a little work this could probably be reworked as just a |
| 8039 call to start_with_line_at_pixpos. */ | |
| 8040 | |
| 665 | 8041 static Charbpos |
| 8042 start_end_of_last_line (struct window *w, Charbpos startp, int end, | |
| 4187 | 8043 int may_error) |
| 428 | 8044 { |
| 8045 struct buffer *b = XBUFFER (w->buffer); | |
| 8046 line_start_cache_dynarr *cache = w->line_start_cache; | |
| 8047 int pixpos = 0; | |
| 8048 int bottom = WINDOW_TEXT_HEIGHT (w); | |
| 665 | 8049 Charbpos cur_start; |
| 428 | 8050 int start_elt; |
| 8051 | |
| 8052 validate_line_start_cache (w); | |
| 8053 w->line_cache_validation_override++; | |
| 8054 | |
| 8055 if (startp < BUF_BEGV (b)) | |
| 8056 startp = BUF_BEGV (b); | |
| 8057 else if (startp > BUF_ZV (b)) | |
| 8058 startp = BUF_ZV (b); | |
| 8059 cur_start = startp; | |
| 8060 | |
| 8061 start_elt = point_in_line_start_cache (w, cur_start, 0); | |
| 8062 if (start_elt == -1) | |
| 442 | 8063 return may_error ? 0 : startp; |
| 428 | 8064 |
| 8065 while (1) | |
| 8066 { | |
| 8067 int height = Dynarr_atp (cache, start_elt)->height; | |
| 8068 | |
| 8069 cur_start = Dynarr_atp (cache, start_elt)->start; | |
| 8070 | |
| 8071 if (pixpos + height > bottom) | |
| 8072 { | |
| 8073 /* Adjust for any possible clip. */ | |
| 8074 if (bottom - pixpos < VERTICAL_CLIP (w, 0)) | |
| 8075 start_elt--; | |
| 8076 | |
| 8077 if (start_elt < 0) | |
| 8078 { | |
| 8079 w->line_cache_validation_override--; | |
| 8080 if (end) | |
| 8081 return BUF_ZV (b); | |
| 8082 else | |
| 8083 return BUF_BEGV (b); | |
| 8084 } | |
| 8085 else | |
| 8086 { | |
| 8087 w->line_cache_validation_override--; | |
| 8088 if (end) | |
| 8089 return Dynarr_atp (cache, start_elt)->end; | |
| 8090 else | |
| 8091 return Dynarr_atp (cache, start_elt)->start; | |
| 8092 } | |
| 8093 } | |
| 8094 | |
| 8095 pixpos += height; | |
| 8096 start_elt++; | |
| 8097 if (start_elt == Dynarr_length (cache)) | |
| 8098 { | |
| 665 | 8099 Charbpos from = line_start_cache_end (w); |
| 428 | 8100 int win_char_height = window_char_height (w, 0); |
| 665 | 8101 Charbpos to = find_next_newline_no_quit (b, from, |
| 428 | 8102 (win_char_height |
| 8103 ? win_char_height | |
| 8104 : 1)); | |
| 8105 | |
| 8106 /* We've hit the end of the bottom so that's what it is. */ | |
| 8107 if (from >= BUF_ZV (b)) | |
| 8108 { | |
| 8109 w->line_cache_validation_override--; | |
| 8110 return BUF_ZV (b); | |
| 8111 } | |
| 8112 | |
| 8113 update_line_start_cache (w, from, to, BUF_PT (b), 0); | |
| 8114 | |
| 8115 /* Updating the cache invalidates any current indexes. */ | |
| 8116 start_elt = point_in_line_start_cache (w, cur_start, -1) + 1; | |
| 8117 } | |
| 8118 } | |
| 8119 } | |
| 8120 | |
| 8121 /* For the given window W, if display starts at STARTP, what will be | |
| 8122 the buffer position at the beginning of the last line displayed. */ | |
| 8123 | |
| 665 | 8124 Charbpos |
| 8125 start_of_last_line (struct window *w, Charbpos startp) | |
| 428 | 8126 { |
| 442 | 8127 return start_end_of_last_line (w, startp, 0 , 0); |
| 428 | 8128 } |
| 8129 | |
| 8130 /* For the given window W, if display starts at STARTP, what will be | |
| 8131 the buffer position at the end of the last line displayed. This is | |
| 8132 also know as the window end position. */ | |
| 8133 | |
| 665 | 8134 Charbpos |
| 8135 end_of_last_line (struct window *w, Charbpos startp) | |
| 428 | 8136 { |
| 442 | 8137 return start_end_of_last_line (w, startp, 1, 0); |
| 428 | 8138 } |
| 8139 | |
| 665 | 8140 static Charbpos |
| 8141 end_of_last_line_may_error (struct window *w, Charbpos startp) | |
| 442 | 8142 { |
| 8143 return start_end_of_last_line (w, startp, 1, 1); | |
| 8144 } | |
| 8145 | |
| 8146 | |
| 428 | 8147 /* For window W, what does the starting position have to be so that |
| 8148 the line containing POINT will cover pixel position PIXPOS. */ | |
| 8149 | |
| 665 | 8150 Charbpos |
| 8151 start_with_line_at_pixpos (struct window *w, Charbpos point, int pixpos) | |
| 428 | 8152 { |
| 8153 struct buffer *b = XBUFFER (w->buffer); | |
| 8154 int cur_elt; | |
| 665 | 8155 Charbpos cur_pos, prev_pos = point; |
| 428 | 8156 int point_line_height; |
| 8157 int pixheight = pixpos - WINDOW_TEXT_TOP (w); | |
| 8158 | |
| 8159 validate_line_start_cache (w); | |
| 8160 w->line_cache_validation_override++; | |
| 8161 | |
| 8162 cur_elt = point_in_line_start_cache (w, point, 0); | |
| 8163 /* #### See comment in update_line_start_cache about big minibuffers. */ | |
| 8164 if (cur_elt < 0) | |
| 8165 { | |
| 8166 w->line_cache_validation_override--; | |
| 8167 return point; | |
| 8168 } | |
| 8169 | |
| 8170 point_line_height = Dynarr_atp (w->line_start_cache, cur_elt)->height; | |
| 8171 | |
| 8172 while (1) | |
| 8173 { | |
| 8174 cur_pos = Dynarr_atp (w->line_start_cache, cur_elt)->start; | |
| 8175 | |
| 8176 pixheight -= Dynarr_atp (w->line_start_cache, cur_elt)->height; | |
| 8177 | |
| 8178 /* Do not take into account the value of vertical_clip here. | |
| 4187 | 8179 That is the responsibility of the calling functions. */ |
| 428 | 8180 if (pixheight < 0) |
| 8181 { | |
| 8182 w->line_cache_validation_override--; | |
| 8183 if (-pixheight > point_line_height) | |
| 8184 /* We can't make the target line cover pixpos, so put it | |
| 8185 above pixpos. That way it will at least be visible. */ | |
| 8186 return prev_pos; | |
| 8187 else | |
| 8188 return cur_pos; | |
| 8189 } | |
| 8190 | |
| 8191 cur_elt--; | |
| 8192 while (cur_elt < 0) | |
| 8193 { | |
| 665 | 8194 Charbpos from, to; |
| 428 | 8195 int win_char_height; |
| 8196 | |
| 8197 if (cur_pos <= BUF_BEGV (b)) | |
| 8198 { | |
| 8199 w->line_cache_validation_override--; | |
| 8200 return BUF_BEGV (b); | |
| 8201 } | |
| 8202 | |
| 8203 win_char_height = window_char_height (w, 0); | |
| 8204 if (!win_char_height) | |
| 8205 win_char_height = 1; | |
| 8206 | |
| 8207 from = find_next_newline_no_quit (b, cur_pos, -win_char_height); | |
| 8208 to = line_start_cache_end (w); | |
| 8209 update_line_start_cache (w, from, to, point, 0); | |
| 8210 | |
| 8211 cur_elt = point_in_line_start_cache (w, cur_pos, 2) - 1; | |
| 8212 assert (cur_elt >= -1); | |
| 8213 /* This used to be cur_elt>=0 under the assumption that if | |
| 8214 point is in the top line and not at BUF_BEGV, then | |
| 434 | 8215 setting the window_start to a newline before the start of |
| 428 | 8216 the first line will always cause scrolling. |
| 8217 | |
| 8218 However in my (jv) opinion this is wrong. That new line | |
| 8219 can be hidden in various ways: invisible extents, an | |
| 8220 explicit window-start not at a newline character etc. | |
| 8221 The existence of those are indeed known to create crashes | |
| 8222 on that assert. So we have no option but to continue the | |
| 8223 search if we found point at the top of the line_start_cache | |
| 8224 again. */ | |
| 434 | 8225 cur_pos = Dynarr_atp (w->line_start_cache,0)->start; |
| 428 | 8226 } |
| 8227 prev_pos = cur_pos; | |
| 8228 } | |
| 8229 } | |
| 8230 | |
| 8231 /* For window W, what does the starting position have to be so that | |
| 8232 the line containing point is on display line LINE. If LINE is | |
| 8233 positive it is considered to be the number of lines from the top of | |
| 8234 the window (0 is the top line). If it is negative the number is | |
| 8235 considered to be the number of lines from the bottom (-1 is the | |
| 8236 bottom line). */ | |
| 8237 | |
| 665 | 8238 Charbpos |
| 8239 start_with_point_on_display_line (struct window *w, Charbpos point, int line) | |
| 428 | 8240 { |
| 8241 validate_line_start_cache (w); | |
| 8242 w->line_cache_validation_override++; | |
| 8243 | |
| 8244 if (line >= 0) | |
| 8245 { | |
| 8246 int cur_elt = point_in_line_start_cache (w, point, line); | |
| 8247 | |
| 8248 if (cur_elt - line < 0) | |
| 8249 cur_elt = 0; /* Hit the top */ | |
| 8250 else | |
| 8251 cur_elt -= line; | |
| 8252 | |
| 8253 w->line_cache_validation_override--; | |
| 8254 return Dynarr_atp (w->line_start_cache, cur_elt)->start; | |
| 8255 } | |
| 8256 else | |
| 8257 { | |
| 8258 /* The calculated value of pixpos is correct for the bottom line | |
| 4187 | 8259 or what we want when line is -1. Therefore we subtract one |
| 8260 because we have already handled one line. */ | |
| 428 | 8261 int new_line = -line - 1; |
| 8262 int cur_elt = point_in_line_start_cache (w, point, new_line); | |
| 8263 int pixpos = WINDOW_TEXT_BOTTOM (w); | |
| 665 | 8264 Charbpos retval, search_point; |
| 428 | 8265 |
| 8266 /* If scroll_on_clipped_lines is false, the last "visible" line of | |
| 4187 | 8267 the window covers the pixel at WINDOW_TEXT_BOTTOM (w) - 1. |
| 8268 If s_o_c_l is true, then we don't want to count a clipped | |
| 8269 line, so back up from the bottom by the height of the line | |
| 8270 containing point. */ | |
| 428 | 8271 if (scroll_on_clipped_lines) |
| 8272 pixpos -= Dynarr_atp (w->line_start_cache, cur_elt)->height; | |
| 8273 else | |
| 8274 pixpos -= 1; | |
| 8275 | |
| 8276 if (cur_elt + new_line >= Dynarr_length (w->line_start_cache)) | |
| 8277 { | |
| 8278 /* Hit the bottom of the buffer. */ | |
| 8279 int adjustment = | |
| 8280 (cur_elt + new_line) - Dynarr_length (w->line_start_cache) + 1; | |
| 8281 Lisp_Object window; | |
| 8282 int defheight; | |
| 8283 | |
| 793 | 8284 window = wrap_window (w); |
| 428 | 8285 default_face_height_and_width (window, &defheight, 0); |
| 8286 | |
| 8287 cur_elt = Dynarr_length (w->line_start_cache) - 1; | |
| 8288 | |
| 8289 pixpos -= (adjustment * defheight); | |
| 8290 if (pixpos < WINDOW_TEXT_TOP (w)) | |
| 8291 pixpos = WINDOW_TEXT_TOP (w); | |
| 8292 } | |
| 8293 else | |
| 8294 cur_elt = cur_elt + new_line; | |
| 8295 | |
| 8296 search_point = Dynarr_atp (w->line_start_cache, cur_elt)->start; | |
| 8297 | |
| 8298 retval = start_with_line_at_pixpos (w, search_point, pixpos); | |
| 8299 w->line_cache_validation_override--; | |
| 8300 return retval; | |
| 8301 } | |
| 8302 } | |
| 8303 | |
| 8304 /* This is used to speed up vertical scrolling by caching the known | |
| 8305 buffer starting positions for display lines. This allows the | |
| 8306 scrolling routines to avoid costly calls to regenerate_window. If | |
| 8307 NO_REGEN is true then it will only add the values in the DESIRED | |
| 8308 display structs which are in the given range. | |
| 8309 | |
| 8310 Note also that the FROM/TO values are minimums. It is possible | |
| 8311 that this function will actually add information outside of the | |
| 8312 lines containing those positions. This can't hurt but it could | |
| 8313 possibly help. | |
| 8314 | |
| 8315 #### We currently force the cache to have only 1 contiguous region. | |
| 8316 It might help to make the cache a dynarr of caches so that we can | |
| 8317 cover more areas. This might, however, turn out to be a lot of | |
| 8318 overhead for too little gain. */ | |
| 8319 | |
| 8320 static void | |
| 665 | 8321 update_line_start_cache (struct window *w, Charbpos from, Charbpos to, |
| 8322 Charbpos point, int no_regen) | |
| 428 | 8323 { |
| 8324 struct buffer *b = XBUFFER (w->buffer); | |
| 8325 line_start_cache_dynarr *cache = w->line_start_cache; | |
| 665 | 8326 Charbpos low_bound, high_bound; |
| 428 | 8327 |
| 8328 validate_line_start_cache (w); | |
| 8329 w->line_cache_validation_override++; | |
| 8330 | |
| 8331 if (from < BUF_BEGV (b)) | |
| 8332 from = BUF_BEGV (b); | |
| 8333 if (to > BUF_ZV (b)) | |
| 8334 to = BUF_ZV (b); | |
| 8335 | |
| 8336 if (from > to) | |
| 8337 { | |
| 8338 w->line_cache_validation_override--; | |
| 8339 return; | |
| 8340 } | |
| 8341 | |
| 8342 if (Dynarr_length (cache)) | |
| 8343 { | |
| 8344 low_bound = line_start_cache_start (w); | |
| 8345 high_bound = line_start_cache_end (w); | |
| 8346 | |
| 8347 /* Check to see if the desired range is already in the cache. */ | |
| 8348 if (from >= low_bound && to <= high_bound) | |
| 8349 { | |
| 8350 w->line_cache_validation_override--; | |
| 8351 return; | |
| 8352 } | |
| 8353 | |
| 8354 /* Check to make sure that the desired range is adjacent to the | |
| 8355 current cache. If not, invalidate the cache. */ | |
| 8356 if (to < low_bound || from > high_bound) | |
| 8357 { | |
| 8358 Dynarr_reset (cache); | |
| 8359 low_bound = high_bound = -1; | |
| 8360 } | |
| 8361 } | |
| 8362 else | |
| 8363 { | |
| 8364 low_bound = high_bound = -1; | |
| 8365 } | |
| 8366 | |
| 8367 w->line_cache_last_updated = make_int (BUF_MODIFF (b)); | |
| 8368 | |
| 8369 /* This could be integrated into the next two sections, but it is easier | |
| 8370 to follow what's going on by having it separate. */ | |
| 8371 if (no_regen) | |
| 8372 { | |
| 665 | 8373 Charbpos start, end; |
| 428 | 8374 |
| 8375 update_internal_cache_list (w, DESIRED_DISP); | |
| 8376 if (!Dynarr_length (internal_cache)) | |
| 8377 { | |
| 8378 w->line_cache_validation_override--; | |
| 8379 return; | |
| 8380 } | |
| 8381 | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
8382 start = Dynarr_begin (internal_cache)->start; |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
8383 end = Dynarr_lastp (internal_cache)->end; |
| 428 | 8384 |
| 8385 /* We aren't allowed to generate additional information to fill in | |
| 4187 | 8386 gaps, so if the DESIRED structs don't overlap the cache, reset the |
| 8387 cache. */ | |
| 428 | 8388 if (Dynarr_length (cache)) |
| 8389 { | |
| 8390 if (end < low_bound || start > high_bound) | |
| 8391 Dynarr_reset (cache); | |
| 8392 | |
| 8393 /* #### What should really happen if what we are doing is | |
| 4187 | 8394 extending a line (the last line)? */ |
| 428 | 8395 if (Dynarr_length (cache) == 1 |
| 8396 && Dynarr_length (internal_cache) == 1) | |
| 8397 Dynarr_reset (cache); | |
| 8398 } | |
| 8399 | |
| 8400 if (!Dynarr_length (cache)) | |
| 8401 { | |
| 8402 Dynarr_add_many (cache, Dynarr_atp (internal_cache, 0), | |
| 8403 Dynarr_length (internal_cache)); | |
| 8404 w->line_cache_validation_override--; | |
| 8405 return; | |
| 8406 } | |
| 8407 | |
| 8408 /* An extra check just in case the calling function didn't pass in | |
| 4187 | 8409 the bounds of the DESIRED structs in the first place. */ |
| 428 | 8410 if (start >= low_bound && end <= high_bound) |
| 8411 { | |
| 8412 w->line_cache_validation_override--; | |
| 8413 return; | |
| 8414 } | |
| 8415 | |
| 8416 /* At this point we know that the internal cache partially overlaps | |
| 4187 | 8417 the main cache. */ |
| 428 | 8418 if (start < low_bound) |
| 8419 { | |
| 8420 int ic_elt = Dynarr_length (internal_cache) - 1; | |
| 8421 while (ic_elt >= 0) | |
| 8422 { | |
| 8423 if (Dynarr_atp (internal_cache, ic_elt)->start < low_bound) | |
| 8424 break; | |
| 8425 else | |
| 8426 ic_elt--; | |
| 8427 } | |
| 8428 | |
| 8429 if (!(ic_elt >= 0)) | |
| 8430 { | |
| 8431 Dynarr_reset (cache); | |
| 8432 Dynarr_add_many (cache, Dynarr_atp (internal_cache, 0), | |
| 8433 Dynarr_length (internal_cache)); | |
| 8434 w->line_cache_validation_override--; | |
| 8435 return; | |
| 8436 } | |
| 8437 | |
| 8438 Dynarr_insert_many_at_start (cache, Dynarr_atp (internal_cache, 0), | |
| 8439 ic_elt + 1); | |
| 8440 } | |
| 8441 | |
| 8442 if (end > high_bound) | |
| 8443 { | |
| 8444 int ic_elt = 0; | |
| 8445 | |
| 8446 while (ic_elt < Dynarr_length (internal_cache)) | |
| 8447 { | |
| 8448 if (Dynarr_atp (internal_cache, ic_elt)->start > high_bound) | |
| 8449 break; | |
| 8450 else | |
| 8451 ic_elt++; | |
| 8452 } | |
| 8453 | |
| 8454 if (!(ic_elt < Dynarr_length (internal_cache))) | |
| 8455 { | |
| 8456 Dynarr_reset (cache); | |
| 8457 Dynarr_add_many (cache, Dynarr_atp (internal_cache, 0), | |
| 8458 Dynarr_length (internal_cache)); | |
| 8459 w->line_cache_validation_override--; | |
| 8460 return; | |
| 8461 } | |
| 8462 | |
| 8463 Dynarr_add_many (cache, Dynarr_atp (internal_cache, ic_elt), | |
| 8464 Dynarr_length (internal_cache) - ic_elt); | |
| 8465 } | |
| 8466 | |
| 8467 w->line_cache_validation_override--; | |
| 8468 return; | |
| 8469 } | |
| 8470 | |
| 8471 if (!Dynarr_length (cache) || from < low_bound) | |
| 8472 { | |
| 665 | 8473 Charbpos startp = find_next_newline_no_quit (b, from, -1); |
| 428 | 8474 int marker = 0; |
| 8475 int old_lb = low_bound; | |
| 8476 | |
| 8477 while (startp < old_lb || low_bound == -1) | |
| 8478 { | |
| 8479 int ic_elt; | |
| 4187 | 8480 Charbpos new_startp; |
| 428 | 8481 |
| 8482 regenerate_window (w, startp, point, CMOTION_DISP); | |
| 8483 update_internal_cache_list (w, CMOTION_DISP); | |
| 8484 | |
| 8485 /* If this assert is triggered then regenerate_window failed | |
| 4187 | 8486 to layout a single line. This is not possible since we |
| 442 | 8487 force at least a single line to be layout for CMOTION_DISP */ |
| 8488 assert (Dynarr_length (internal_cache)); | |
| 428 | 8489 assert (startp == Dynarr_atp (internal_cache, 0)->start); |
| 8490 | |
| 8491 ic_elt = Dynarr_length (internal_cache) - 1; | |
| 8492 if (low_bound != -1) | |
| 8493 { | |
| 8494 while (ic_elt >= 0) | |
| 8495 { | |
| 8496 if (Dynarr_atp (internal_cache, ic_elt)->start < old_lb) | |
| 8497 break; | |
| 8498 else | |
| 8499 ic_elt--; | |
| 8500 } | |
| 8501 } | |
| 8502 assert (ic_elt >= 0); | |
| 8503 | |
| 8504 new_startp = Dynarr_atp (internal_cache, ic_elt)->end + 1; | |
| 8505 | |
| 4187 | 8506 /* |
| 8507 * Handle invisible text properly: | |
| 8508 * If the last line we're inserting has the same end as the | |
| 8509 * line before which it will be added, merge the two lines. | |
| 8510 */ | |
| 8511 if (Dynarr_length (cache) && | |
| 8512 Dynarr_atp (internal_cache, ic_elt)->end == | |
| 8513 Dynarr_atp (cache, marker)->end) | |
| 8514 { | |
| 8515 Dynarr_atp (cache, marker)->start | |
| 8516 = Dynarr_atp (internal_cache, ic_elt)->start; | |
| 8517 Dynarr_atp (cache, marker)->height | |
| 8518 = Dynarr_atp (internal_cache, ic_elt)->height; | |
| 8519 ic_elt--; | |
| 8520 } | |
| 8521 | |
| 8522 if (ic_elt >= 0) /* we still have lines to add.. */ | |
| 8523 { | |
| 8524 Dynarr_insert_many (cache, Dynarr_atp (internal_cache, 0), | |
| 8525 ic_elt + 1, marker); | |
| 8526 marker += (ic_elt + 1); | |
| 8527 } | |
| 428 | 8528 |
| 8529 if (startp < low_bound || low_bound == -1) | |
| 8530 low_bound = startp; | |
| 8531 startp = new_startp; | |
| 8532 if (startp > BUF_ZV (b)) | |
| 8533 { | |
| 8534 w->line_cache_validation_override--; | |
| 8535 return; | |
| 8536 } | |
| 8537 } | |
| 8538 } | |
| 8539 | |
| 8540 assert (Dynarr_length (cache)); | |
| 8541 assert (from >= low_bound); | |
| 8542 | |
| 8543 /* Readjust the high_bound to account for any changes made while | |
| 8544 correcting the low_bound. */ | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
8545 high_bound = Dynarr_lastp (cache)->end; |
| 428 | 8546 |
| 8547 if (to > high_bound) | |
| 8548 { | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
8549 Charbpos startp = Dynarr_lastp (cache)->end + 1; |
| 428 | 8550 |
| 8551 do | |
| 8552 { | |
| 8553 regenerate_window (w, startp, point, CMOTION_DISP); | |
| 8554 update_internal_cache_list (w, CMOTION_DISP); | |
| 8555 | |
| 8556 /* See comment above about regenerate_window failing. */ | |
| 8557 assert (Dynarr_length (internal_cache)); | |
| 8558 | |
| 8559 Dynarr_add_many (cache, Dynarr_atp (internal_cache, 0), | |
| 8560 Dynarr_length (internal_cache)); | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
8561 high_bound = Dynarr_lastp (cache)->end; |
| 428 | 8562 startp = high_bound + 1; |
| 8563 } | |
| 8564 while (to > high_bound); | |
| 8565 } | |
| 8566 | |
| 8567 w->line_cache_validation_override--; | |
| 8568 assert (to <= high_bound); | |
| 8569 } | |
| 8570 | |
| 8571 | |
| 8572 /* Given x and y coordinates in characters, relative to a window, | |
| 8573 return the pixel location corresponding to those coordinates. The | |
| 8574 pixel location returned is the center of the given character | |
| 8575 position. The pixel values are generated relative to the window, | |
| 8576 not the frame. | |
| 8577 | |
| 8578 The modeline is considered to be part of the window. */ | |
| 8579 | |
| 8580 void | |
| 8581 glyph_to_pixel_translation (struct window *w, int char_x, int char_y, | |
| 8582 int *pix_x, int *pix_y) | |
| 8583 { | |
| 8584 display_line_dynarr *dla = window_display_lines (w, CURRENT_DISP); | |
| 8585 int num_disp_lines, modeline; | |
| 8586 Lisp_Object window; | |
| 8587 int defheight, defwidth; | |
| 8588 | |
| 793 | 8589 window = wrap_window (w); |
| 428 | 8590 default_face_height_and_width (window, &defheight, &defwidth); |
| 8591 | |
| 8592 /* If we get a bogus value indicating somewhere above or to the left of | |
| 8593 the window, use the first window line or character position | |
| 8594 instead. */ | |
| 8595 if (char_y < 0) | |
| 8596 char_y = 0; | |
| 8597 if (char_x < 0) | |
| 8598 char_x = 0; | |
| 8599 | |
| 8600 num_disp_lines = Dynarr_length (dla); | |
| 8601 modeline = 0; | |
| 8602 if (num_disp_lines) | |
| 8603 { | |
| 8604 if (Dynarr_atp (dla, 0)->modeline) | |
| 8605 { | |
| 8606 num_disp_lines--; | |
| 8607 modeline = 1; | |
| 8608 } | |
| 8609 } | |
| 8610 | |
| 8611 /* First check if the y position intersects the display lines. */ | |
| 8612 if (char_y < num_disp_lines) | |
| 8613 { | |
| 8614 struct display_line *dl = Dynarr_atp (dla, char_y + modeline); | |
| 8615 struct display_block *db = get_display_block_from_line (dl, TEXT); | |
| 8616 | |
| 8617 *pix_y = (dl->ypos - dl->ascent + | |
| 647 | 8618 ((dl->ascent + dl->descent - dl->clip) >> 1)); |
| 428 | 8619 |
| 8620 if (char_x < Dynarr_length (db->runes)) | |
| 8621 { | |
| 8622 struct rune *rb = Dynarr_atp (db->runes, char_x); | |
| 8623 | |
| 8624 *pix_x = rb->xpos + (rb->width >> 1); | |
| 8625 } | |
| 8626 else | |
| 8627 { | |
| 8628 int last_rune = Dynarr_length (db->runes) - 1; | |
| 8629 struct rune *rb = Dynarr_atp (db->runes, last_rune); | |
| 8630 | |
| 8631 char_x -= last_rune; | |
| 8632 | |
| 8633 *pix_x = rb->xpos + rb->width; | |
| 8634 *pix_x += ((char_x - 1) * defwidth); | |
| 8635 *pix_x += (defwidth >> 1); | |
| 8636 } | |
| 8637 } | |
| 8638 else | |
| 8639 { | |
| 8640 /* It didn't intersect, so extrapolate. #### For now, we include the | |
| 8641 modeline in this since we don't have true character positions in | |
| 8642 it. */ | |
| 8643 | |
| 8644 if (!Dynarr_length (w->face_cachels)) | |
| 8645 reset_face_cachels (w); | |
| 8646 | |
| 8647 char_y -= num_disp_lines; | |
| 8648 | |
| 8649 if (Dynarr_length (dla)) | |
| 8650 { | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
8651 struct display_line *dl = Dynarr_lastp (dla); |
| 428 | 8652 *pix_y = dl->ypos + dl->descent - dl->clip; |
| 8653 } | |
| 8654 else | |
| 8655 *pix_y = WINDOW_TEXT_TOP (w); | |
| 8656 | |
| 8657 *pix_y += (char_y * defheight); | |
| 8658 *pix_y += (defheight >> 1); | |
| 8659 | |
| 8660 *pix_x = WINDOW_TEXT_LEFT (w); | |
| 8661 /* Don't adjust by one because this is still the unadjusted value. */ | |
| 8662 *pix_x += (char_x * defwidth); | |
| 8663 *pix_x += (defwidth >> 1); | |
| 8664 } | |
| 8665 | |
| 8666 if (*pix_x > w->pixel_left + w->pixel_width) | |
| 8667 *pix_x = w->pixel_left + w->pixel_width; | |
| 8668 if (*pix_y > w->pixel_top + w->pixel_height) | |
| 8669 *pix_y = w->pixel_top + w->pixel_height; | |
| 8670 | |
| 8671 *pix_x -= w->pixel_left; | |
| 8672 *pix_y -= w->pixel_top; | |
| 8673 } | |
| 8674 | |
| 8675 /* Given a display line and a position, determine if there is a glyph | |
| 8676 there and return information about it if there is. */ | |
| 8677 | |
| 8678 static void | |
| 8679 get_position_object (struct display_line *dl, Lisp_Object *obj1, | |
| 8680 Lisp_Object *obj2, int x_coord, int *low_x_coord, | |
| 8681 int *high_x_coord) | |
| 8682 { | |
| 8683 struct display_block *db; | |
| 8684 int elt; | |
| 8685 int block = | |
| 8686 get_next_display_block (dl->bounds, dl->display_blocks, x_coord, 0); | |
| 8687 | |
| 8688 /* We use get_next_display_block to get the actual display block | |
| 8689 that would be displayed at x_coord. */ | |
| 8690 | |
| 8691 if (block == NO_BLOCK) | |
| 8692 return; | |
| 8693 else | |
| 8694 db = Dynarr_atp (dl->display_blocks, block); | |
| 8695 | |
| 8696 for (elt = 0; elt < Dynarr_length (db->runes); elt++) | |
| 8697 { | |
| 8698 struct rune *rb = Dynarr_atp (db->runes, elt); | |
| 8699 | |
| 8700 if (rb->xpos <= x_coord && x_coord < (rb->xpos + rb->width)) | |
| 8701 { | |
| 8702 if (rb->type == RUNE_DGLYPH) | |
| 8703 { | |
| 8704 *obj1 = rb->object.dglyph.glyph; | |
| 8705 *obj2 = rb->object.dglyph.extent; | |
| 8706 } | |
| 8707 else | |
| 8708 { | |
| 8709 *obj1 = Qnil; | |
| 8710 *obj2 = Qnil; | |
| 8711 } | |
| 8712 | |
| 8713 if (low_x_coord) | |
| 8714 *low_x_coord = rb->xpos; | |
| 8715 if (high_x_coord) | |
| 8716 *high_x_coord = rb->xpos + rb->width; | |
| 8717 | |
| 8718 return; | |
| 8719 } | |
| 8720 } | |
| 8721 } | |
| 8722 | |
| 8723 #define UPDATE_CACHE_RETURN \ | |
| 8724 do { \ | |
| 8725 d->pixel_to_glyph_cache.valid = 1; \ | |
| 8726 d->pixel_to_glyph_cache.low_x_coord = low_x_coord; \ | |
| 8727 d->pixel_to_glyph_cache.high_x_coord = high_x_coord; \ | |
| 8728 d->pixel_to_glyph_cache.low_y_coord = low_y_coord; \ | |
| 8729 d->pixel_to_glyph_cache.high_y_coord = high_y_coord; \ | |
| 8730 d->pixel_to_glyph_cache.frame = f; \ | |
| 8731 d->pixel_to_glyph_cache.col = *col; \ | |
| 8732 d->pixel_to_glyph_cache.row = *row; \ | |
| 8733 d->pixel_to_glyph_cache.obj_x = *obj_x; \ | |
| 8734 d->pixel_to_glyph_cache.obj_y = *obj_y; \ | |
| 8735 d->pixel_to_glyph_cache.w = *w; \ | |
| 826 | 8736 d->pixel_to_glyph_cache.charpos = *charpos; \ |
| 428 | 8737 d->pixel_to_glyph_cache.closest = *closest; \ |
| 8738 d->pixel_to_glyph_cache.modeline_closest = *modeline_closest; \ | |
| 8739 d->pixel_to_glyph_cache.obj1 = *obj1; \ | |
| 8740 d->pixel_to_glyph_cache.obj2 = *obj2; \ | |
| 8741 d->pixel_to_glyph_cache.retval = position; \ | |
| 8742 RETURN_SANS_WARNINGS position; \ | |
| 8743 } while (0) | |
| 8744 | |
| 8745 /* Given x and y coordinates in pixels relative to a frame, return | |
| 8746 information about what is located under those coordinates. | |
| 8747 | |
| 8748 The return value will be one of: | |
| 8749 | |
| 8750 OVER_TOOLBAR: over one of the 4 frame toolbars | |
| 8751 OVER_MODELINE: over a modeline | |
| 8752 OVER_BORDER: over an internal border | |
| 8753 OVER_NOTHING: over the text area, but not over text | |
| 8754 OVER_OUTSIDE: outside of the frame border | |
| 8755 OVER_TEXT: over text in the text area | |
| 8756 | |
| 8757 OBJ1 is one of | |
| 8758 | |
| 8759 -- a toolbar button | |
| 8760 -- a glyph | |
| 8761 -- nil if the coordinates are not over a glyph or a toolbar button. | |
| 8762 | |
| 8763 OBJ2 is one of | |
| 8764 | |
| 8765 -- an extent, if the coordinates are over a glyph in the text area | |
| 8766 -- nil otherwise. | |
| 8767 | |
| 8768 If the coordinates are over a glyph, OBJ_X and OBJ_Y give the | |
| 8769 equivalent coordinates relative to the upper-left corner of the glyph. | |
| 8770 | |
| 8771 If the coordinates are over a character, OBJ_X and OBJ_Y give the | |
| 8772 equivalent coordinates relative to the upper-left corner of the character. | |
| 8773 | |
| 8774 Otherwise, OBJ_X and OBJ_Y are undefined. | |
| 8775 */ | |
| 8776 | |
| 8777 int | |
| 8778 pixel_to_glyph_translation (struct frame *f, int x_coord, int y_coord, | |
| 8779 int *col, int *row, int *obj_x, int *obj_y, | |
| 826 | 8780 struct window **w, Charbpos *charpos, |
| 665 | 8781 Charbpos *closest, Charcount *modeline_closest, |
| 428 | 8782 Lisp_Object *obj1, Lisp_Object *obj2) |
| 8783 { | |
| 8784 struct device *d; | |
| 8785 struct pixel_to_glyph_translation_cache *cache; | |
| 8786 Lisp_Object window; | |
| 8787 int frm_left, frm_right, frm_top, frm_bottom; | |
| 8788 int low_x_coord, high_x_coord, low_y_coord, high_y_coord; | |
| 8789 int position = OVER_NOTHING; | |
| 8790 int device_check_failed = 0; | |
| 8791 display_line_dynarr *dla; | |
| 8792 | |
| 8793 /* This is a safety valve in case this got called with a frame in | |
| 8794 the middle of being deleted. */ | |
| 8795 if (!DEVICEP (f->device) || !DEVICE_LIVE_P (XDEVICE (f->device))) | |
| 8796 { | |
| 8797 device_check_failed = 1; | |
| 8798 d = NULL, cache = NULL; /* Warning suppression */ | |
| 8799 } | |
| 8800 else | |
| 8801 { | |
| 8802 d = XDEVICE (f->device); | |
| 8803 cache = &d->pixel_to_glyph_cache; | |
| 8804 } | |
| 8805 | |
| 8806 if (!device_check_failed | |
| 8807 && cache->valid | |
| 8808 && cache->frame == f | |
| 8809 && cache->low_x_coord <= x_coord | |
| 8810 && cache->high_x_coord > x_coord | |
| 8811 && cache->low_y_coord <= y_coord | |
| 8812 && cache->high_y_coord > y_coord) | |
| 8813 { | |
| 8814 *col = cache->col; | |
| 8815 *row = cache->row; | |
| 8816 *obj_x = cache->obj_x; | |
| 8817 *obj_y = cache->obj_y; | |
| 8818 *w = cache->w; | |
| 826 | 8819 *charpos = cache->charpos; |
| 428 | 8820 *closest = cache->closest; |
| 8821 *modeline_closest = cache->modeline_closest; | |
| 8822 *obj1 = cache->obj1; | |
| 8823 *obj2 = cache->obj2; | |
| 8824 | |
| 8825 return cache->retval; | |
| 8826 } | |
| 8827 else | |
| 8828 { | |
| 8829 *col = 0; | |
| 8830 *row = 0; | |
| 8831 *obj_x = 0; | |
| 8832 *obj_y = 0; | |
| 8833 *w = 0; | |
| 826 | 8834 *charpos = 0; |
| 428 | 8835 *closest = 0; |
| 8836 *modeline_closest = -1; | |
| 8837 *obj1 = Qnil; | |
| 8838 *obj2 = Qnil; | |
| 8839 | |
| 8840 low_x_coord = x_coord; | |
| 8841 high_x_coord = x_coord + 1; | |
| 8842 low_y_coord = y_coord; | |
| 8843 high_y_coord = y_coord + 1; | |
| 8844 } | |
| 8845 | |
| 8846 if (device_check_failed) | |
| 8847 return OVER_NOTHING; | |
| 8848 | |
| 8849 frm_left = FRAME_LEFT_BORDER_END (f); | |
| 8850 frm_right = FRAME_RIGHT_BORDER_START (f); | |
| 8851 frm_top = FRAME_TOP_BORDER_END (f); | |
| 8852 frm_bottom = FRAME_BOTTOM_BORDER_START (f); | |
| 8853 | |
| 8854 /* Check if the mouse is outside of the text area actually used by | |
| 8855 redisplay. */ | |
| 8856 if (y_coord < frm_top) | |
| 8857 { | |
| 8858 if (y_coord >= FRAME_TOP_BORDER_START (f)) | |
| 8859 { | |
| 8860 low_y_coord = FRAME_TOP_BORDER_START (f); | |
| 8861 high_y_coord = frm_top; | |
| 8862 position = OVER_BORDER; | |
| 8863 } | |
| 8864 else if (y_coord >= 0) | |
| 8865 { | |
| 8866 low_y_coord = 0; | |
| 8867 high_y_coord = FRAME_TOP_BORDER_START (f); | |
| 8868 position = OVER_TOOLBAR; | |
| 8869 } | |
| 8870 else | |
| 8871 { | |
| 8872 low_y_coord = y_coord; | |
| 8873 high_y_coord = 0; | |
| 8874 position = OVER_OUTSIDE; | |
| 8875 } | |
| 8876 } | |
| 8877 else if (y_coord >= frm_bottom) | |
| 8878 { | |
| 8879 if (y_coord < FRAME_BOTTOM_BORDER_END (f)) | |
| 8880 { | |
| 8881 low_y_coord = frm_bottom; | |
| 8882 high_y_coord = FRAME_BOTTOM_BORDER_END (f); | |
| 8883 position = OVER_BORDER; | |
| 8884 } | |
| 8885 else if (y_coord < FRAME_PIXHEIGHT (f)) | |
| 8886 { | |
| 8887 low_y_coord = FRAME_BOTTOM_BORDER_END (f); | |
| 8888 high_y_coord = FRAME_PIXHEIGHT (f); | |
| 8889 position = OVER_TOOLBAR; | |
| 8890 } | |
| 8891 else | |
| 8892 { | |
| 8893 low_y_coord = FRAME_PIXHEIGHT (f); | |
| 8894 high_y_coord = y_coord; | |
| 8895 position = OVER_OUTSIDE; | |
| 8896 } | |
| 8897 } | |
| 8898 | |
| 8899 if (position != OVER_TOOLBAR && position != OVER_BORDER) | |
| 8900 { | |
| 8901 if (x_coord < frm_left) | |
| 8902 { | |
| 8903 if (x_coord >= FRAME_LEFT_BORDER_START (f)) | |
| 8904 { | |
| 8905 low_x_coord = FRAME_LEFT_BORDER_START (f); | |
| 8906 high_x_coord = frm_left; | |
| 8907 position = OVER_BORDER; | |
| 8908 } | |
| 8909 else if (x_coord >= 0) | |
| 8910 { | |
| 8911 low_x_coord = 0; | |
| 8912 high_x_coord = FRAME_LEFT_BORDER_START (f); | |
| 8913 position = OVER_TOOLBAR; | |
| 8914 } | |
| 8915 else | |
| 8916 { | |
| 8917 low_x_coord = x_coord; | |
| 8918 high_x_coord = 0; | |
| 8919 position = OVER_OUTSIDE; | |
| 8920 } | |
| 8921 } | |
| 8922 else if (x_coord >= frm_right) | |
| 8923 { | |
| 8924 if (x_coord < FRAME_RIGHT_BORDER_END (f)) | |
| 8925 { | |
| 8926 low_x_coord = frm_right; | |
| 8927 high_x_coord = FRAME_RIGHT_BORDER_END (f); | |
| 8928 position = OVER_BORDER; | |
| 8929 } | |
| 8930 else if (x_coord < FRAME_PIXWIDTH (f)) | |
| 8931 { | |
| 8932 low_x_coord = FRAME_RIGHT_BORDER_END (f); | |
| 8933 high_x_coord = FRAME_PIXWIDTH (f); | |
| 8934 position = OVER_TOOLBAR; | |
| 8935 } | |
| 8936 else | |
| 8937 { | |
| 8938 low_x_coord = FRAME_PIXWIDTH (f); | |
| 8939 high_x_coord = x_coord; | |
| 8940 position = OVER_OUTSIDE; | |
| 8941 } | |
| 8942 } | |
| 8943 } | |
| 8944 | |
| 8945 #ifdef HAVE_TOOLBARS | |
| 8946 if (position == OVER_TOOLBAR) | |
| 8947 { | |
| 8948 *obj1 = toolbar_button_at_pixpos (f, x_coord, y_coord); | |
| 8949 *obj2 = Qnil; | |
| 8950 *w = 0; | |
| 8951 UPDATE_CACHE_RETURN; | |
| 8952 } | |
| 8953 #endif /* HAVE_TOOLBARS */ | |
| 8954 | |
| 8955 /* We still have to return the window the pointer is next to and its | |
| 8956 relative y position even if it is outside the x boundary. */ | |
| 8957 if (x_coord < frm_left) | |
| 8958 x_coord = frm_left; | |
| 8959 else if (x_coord > frm_right) | |
| 8960 x_coord = frm_right; | |
| 8961 | |
| 8962 /* Same in reverse. */ | |
| 8963 if (y_coord < frm_top) | |
| 8964 y_coord = frm_top; | |
| 8965 else if (y_coord > frm_bottom) | |
| 8966 y_coord = frm_bottom; | |
| 8967 | |
| 8968 /* Find what window the given coordinates are actually in. */ | |
| 8969 window = f->root_window; | |
| 8970 *w = find_window_by_pixel_pos (x_coord, y_coord, window); | |
| 8971 | |
| 8972 /* If we didn't find a window, we're done. */ | |
| 8973 if (!*w) | |
| 8974 { | |
| 8975 UPDATE_CACHE_RETURN; | |
| 8976 } | |
| 8977 else if (position != OVER_NOTHING) | |
| 8978 { | |
| 8979 *closest = 0; | |
| 8980 *modeline_closest = -1; | |
| 8981 | |
| 8982 if (high_y_coord <= frm_top || high_y_coord >= frm_bottom) | |
| 8983 { | |
| 8984 *w = 0; | |
| 8985 UPDATE_CACHE_RETURN; | |
| 8986 } | |
| 8987 } | |
| 8988 | |
| 8989 /* Check if the window is a minibuffer but isn't active. */ | |
| 8990 if (MINI_WINDOW_P (*w) && !minibuf_level) | |
| 8991 { | |
| 8992 /* Must reset the window value since some callers will ignore | |
| 4187 | 8993 the return value if it is set. */ |
| 428 | 8994 *w = 0; |
| 8995 UPDATE_CACHE_RETURN; | |
| 8996 } | |
| 8997 | |
| 8998 /* See if the point is over window vertical divider */ | |
| 8999 if (window_needs_vertical_divider (*w)) | |
| 9000 { | |
| 9001 int div_x_high = WINDOW_RIGHT (*w); | |
| 9002 int div_x_low = div_x_high - window_divider_width (*w); | |
| 9003 int div_y_high = WINDOW_BOTTOM (*w); | |
| 9004 int div_y_low = WINDOW_TOP (*w); | |
| 9005 | |
| 9006 if (div_x_low < x_coord && x_coord <= div_x_high && | |
| 9007 div_y_low < y_coord && y_coord <= div_y_high) | |
| 9008 { | |
| 9009 low_x_coord = div_x_low; | |
| 9010 high_x_coord = div_x_high; | |
| 9011 low_y_coord = div_y_low; | |
| 9012 high_y_coord = div_y_high; | |
| 9013 position = OVER_V_DIVIDER; | |
| 9014 UPDATE_CACHE_RETURN; | |
| 9015 } | |
| 9016 } | |
| 9017 | |
| 9018 dla = window_display_lines (*w, CURRENT_DISP); | |
| 9019 | |
| 9020 for (*row = 0; *row < Dynarr_length (dla); (*row)++) | |
| 9021 { | |
| 9022 int really_over_nothing = 0; | |
| 9023 struct display_line *dl = Dynarr_atp (dla, *row); | |
| 9024 | |
| 9025 if ((int) (dl->ypos - dl->ascent) <= y_coord | |
| 9026 && y_coord <= (int) (dl->ypos + dl->descent)) | |
| 9027 { | |
| 9028 int check_margin_glyphs = 0; | |
| 9029 struct display_block *db = get_display_block_from_line (dl, TEXT); | |
| 9030 struct rune *rb = 0; | |
| 9031 | |
| 9032 if (x_coord < dl->bounds.left_white | |
| 9033 || x_coord >= dl->bounds.right_white) | |
| 9034 check_margin_glyphs = 1; | |
| 9035 | |
| 9036 low_y_coord = dl->ypos - dl->ascent; | |
| 9037 high_y_coord = dl->ypos + dl->descent + 1; | |
| 9038 | |
| 9039 if (position == OVER_BORDER | |
| 9040 || position == OVER_OUTSIDE | |
| 9041 || check_margin_glyphs) | |
| 9042 { | |
| 9043 int x_check, left_bound; | |
| 9044 | |
| 9045 if (check_margin_glyphs) | |
| 9046 { | |
| 9047 x_check = x_coord; | |
| 9048 left_bound = dl->bounds.left_white; | |
| 9049 } | |
| 9050 else | |
| 9051 { | |
| 9052 x_check = high_x_coord; | |
| 9053 left_bound = frm_left; | |
| 9054 } | |
| 9055 | |
| 9056 if (Dynarr_length (db->runes)) | |
| 9057 { | |
| 9058 if (x_check <= left_bound) | |
| 9059 { | |
| 9060 if (dl->modeline) | |
| 826 | 9061 *modeline_closest = Dynarr_atp (db->runes, 0)->charpos; |
| 428 | 9062 else |
| 826 | 9063 *closest = Dynarr_atp (db->runes, 0)->charpos; |
| 428 | 9064 } |
| 9065 else | |
| 9066 { | |
| 9067 if (dl->modeline) | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
9068 *modeline_closest = Dynarr_lastp (db->runes)->charpos; |
| 428 | 9069 else |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
9070 *closest = Dynarr_lastp (db->runes)->charpos; |
| 428 | 9071 } |
| 9072 | |
| 9073 if (dl->modeline) | |
| 9074 *modeline_closest += dl->offset; | |
| 9075 else | |
| 9076 *closest += dl->offset; | |
| 9077 } | |
| 9078 else | |
| 9079 { | |
| 9080 /* #### What should be here. */ | |
| 9081 if (dl->modeline) | |
| 9082 *modeline_closest = 0; | |
| 9083 else | |
| 9084 *closest = 0; | |
| 9085 } | |
| 9086 | |
| 9087 if (check_margin_glyphs) | |
| 9088 { | |
| 9089 if (x_coord < dl->bounds.left_in | |
| 9090 || x_coord >= dl->bounds.right_in) | |
| 9091 { | |
| 9092 /* If we are over the outside margins then we | |
| 4187 | 9093 know the loop over the text block isn't going |
| 9094 to accomplish anything. So we go ahead and | |
| 9095 set what information we can right here and | |
| 9096 return. */ | |
| 428 | 9097 (*row)--; |
| 9098 *obj_y = y_coord - (dl->ypos - dl->ascent); | |
| 9099 get_position_object (dl, obj1, obj2, x_coord, | |
| 9100 &low_x_coord, &high_x_coord); | |
| 9101 | |
| 9102 UPDATE_CACHE_RETURN; | |
| 9103 } | |
| 9104 } | |
| 9105 else | |
| 9106 UPDATE_CACHE_RETURN; | |
| 9107 } | |
| 9108 | |
| 9109 for (*col = 0; *col <= Dynarr_length (db->runes); (*col)++) | |
| 9110 { | |
| 9111 int past_end = (*col == Dynarr_length (db->runes)); | |
| 9112 | |
| 9113 if (!past_end) | |
| 9114 rb = Dynarr_atp (db->runes, *col); | |
| 9115 | |
| 9116 if (past_end || | |
| 9117 (rb->xpos <= x_coord && x_coord < rb->xpos + rb->width)) | |
| 9118 { | |
| 9119 if (past_end) | |
| 9120 { | |
| 9121 (*col)--; | |
| 9122 rb = Dynarr_atp (db->runes, *col); | |
| 9123 } | |
| 9124 | |
| 826 | 9125 *charpos = rb->charpos + dl->offset; |
| 428 | 9126 low_x_coord = rb->xpos; |
| 9127 high_x_coord = rb->xpos + rb->width; | |
| 9128 | |
| 9129 if (rb->type == RUNE_DGLYPH) | |
| 9130 { | |
| 9131 int elt = *col + 1; | |
| 9132 | |
| 9133 /* Find the first character after the glyph. */ | |
| 9134 while (elt < Dynarr_length (db->runes)) | |
| 9135 { | |
| 9136 if (Dynarr_atp (db->runes, elt)->type != RUNE_DGLYPH) | |
| 9137 { | |
| 9138 if (dl->modeline) | |
| 9139 *modeline_closest = | |
| 826 | 9140 (Dynarr_atp (db->runes, elt)->charpos + |
| 428 | 9141 dl->offset); |
| 9142 else | |
| 9143 *closest = | |
| 826 | 9144 (Dynarr_atp (db->runes, elt)->charpos + |
| 428 | 9145 dl->offset); |
| 9146 break; | |
| 9147 } | |
| 9148 | |
| 9149 elt++; | |
| 9150 } | |
| 9151 | |
| 9152 /* In this case we failed to find a non-glyph | |
| 4187 | 9153 character so we return the last position |
| 9154 displayed on the line. */ | |
| 428 | 9155 if (elt == Dynarr_length (db->runes)) |
| 9156 { | |
| 9157 if (dl->modeline) | |
| 826 | 9158 *modeline_closest = dl->end_charpos + dl->offset; |
| 428 | 9159 else |
| 826 | 9160 *closest = dl->end_charpos + dl->offset; |
| 428 | 9161 really_over_nothing = 1; |
| 9162 } | |
| 9163 } | |
| 9164 else | |
| 9165 { | |
| 9166 if (dl->modeline) | |
| 826 | 9167 *modeline_closest = rb->charpos + dl->offset; |
| 428 | 9168 else |
| 826 | 9169 *closest = rb->charpos + dl->offset; |
| 428 | 9170 } |
| 9171 | |
| 9172 if (dl->modeline) | |
| 9173 { | |
| 9174 *row = window_displayed_height (*w); | |
| 9175 | |
| 9176 if (position == OVER_NOTHING) | |
| 9177 position = OVER_MODELINE; | |
| 9178 | |
| 9179 if (rb->type == RUNE_DGLYPH) | |
| 9180 { | |
| 9181 *obj1 = rb->object.dglyph.glyph; | |
| 9182 *obj2 = rb->object.dglyph.extent; | |
| 9183 } | |
| 9184 else if (rb->type == RUNE_CHAR) | |
| 9185 { | |
| 9186 *obj1 = Qnil; | |
| 9187 *obj2 = Qnil; | |
| 9188 } | |
| 9189 else | |
| 9190 { | |
| 9191 *obj1 = Qnil; | |
| 9192 *obj2 = Qnil; | |
| 9193 } | |
| 9194 | |
| 9195 UPDATE_CACHE_RETURN; | |
| 9196 } | |
| 9197 else if (past_end | |
| 9198 || (rb->type == RUNE_CHAR | |
| 9199 && rb->object.chr.ch == '\n')) | |
| 9200 { | |
| 9201 (*row)--; | |
| 9202 /* At this point we may have glyphs in the right | |
| 4187 | 9203 inside margin. */ |
| 428 | 9204 if (check_margin_glyphs) |
| 9205 get_position_object (dl, obj1, obj2, x_coord, | |
| 9206 &low_x_coord, &high_x_coord); | |
| 9207 UPDATE_CACHE_RETURN; | |
| 9208 } | |
| 9209 else | |
| 9210 { | |
| 9211 (*row)--; | |
| 9212 if (rb->type == RUNE_DGLYPH) | |
| 9213 { | |
| 9214 *obj1 = rb->object.dglyph.glyph; | |
| 9215 *obj2 = rb->object.dglyph.extent; | |
| 9216 } | |
| 9217 else if (rb->type == RUNE_CHAR) | |
| 9218 { | |
| 9219 *obj1 = Qnil; | |
| 9220 *obj2 = Qnil; | |
| 9221 } | |
| 9222 else | |
| 9223 { | |
| 9224 *obj1 = Qnil; | |
| 9225 *obj2 = Qnil; | |
| 9226 } | |
| 9227 | |
| 9228 *obj_x = x_coord - rb->xpos; | |
| 9229 *obj_y = y_coord - (dl->ypos - dl->ascent); | |
| 9230 | |
| 9231 /* At this point we may have glyphs in the left | |
| 4187 | 9232 inside margin. */ |
| 428 | 9233 if (check_margin_glyphs) |
| 9234 get_position_object (dl, obj1, obj2, x_coord, 0, 0); | |
| 9235 | |
| 9236 if (position == OVER_NOTHING && !really_over_nothing) | |
| 9237 position = OVER_TEXT; | |
| 9238 | |
| 9239 UPDATE_CACHE_RETURN; | |
| 9240 } | |
| 9241 } | |
| 9242 } | |
| 9243 } | |
| 9244 } | |
| 9245 | |
| 9246 *row = Dynarr_length (dla) - 1; | |
| 9247 if (FRAME_WIN_P (f)) | |
| 9248 { | |
| 9249 int bot_elt = Dynarr_length (dla) - 1; | |
| 9250 | |
| 9251 if (bot_elt >= 0) | |
| 9252 { | |
| 9253 struct display_line *dl = Dynarr_atp (dla, bot_elt); | |
| 9254 int adj_area = y_coord - (dl->ypos + dl->descent); | |
| 9255 Lisp_Object lwin; | |
| 9256 int defheight; | |
| 9257 | |
| 793 | 9258 lwin = wrap_window (*w); |
| 428 | 9259 default_face_height_and_width (lwin, 0, &defheight); |
| 9260 | |
| 9261 *row += (adj_area / defheight); | |
| 9262 } | |
| 9263 } | |
| 9264 | |
| 9265 /* #### This should be checked out some more to determine what | |
| 9266 should really be going on. */ | |
| 9267 if (!MARKERP ((*w)->start[CURRENT_DISP])) | |
| 9268 *closest = 0; | |
| 9269 else | |
| 442 | 9270 *closest = end_of_last_line_may_error (*w, |
| 428 | 9271 marker_position ((*w)->start[CURRENT_DISP])); |
| 9272 *col = 0; | |
| 9273 UPDATE_CACHE_RETURN; | |
| 9274 } | |
| 9275 #undef UPDATE_CACHE_RETURN | |
| 9276 | |
| 9277 | |
| 9278 /***************************************************************************/ | |
| 9279 /* */ | |
| 9280 /* Lisp functions */ | |
| 9281 /* */ | |
| 9282 /***************************************************************************/ | |
| 9283 | |
| 9284 DEFUN ("redisplay-echo-area", Fredisplay_echo_area, 0, 0, 0, /* | |
| 9285 Ensure that all minibuffers are correctly showing the echo area. | |
| 9286 */ | |
| 9287 ()) | |
| 9288 { | |
| 9289 Lisp_Object devcons, concons; | |
| 9290 | |
| 1318 | 9291 if (in_display) |
| 9292 return Qnil; | |
| 9293 | |
| 428 | 9294 DEVICE_LOOP_NO_BREAK (devcons, concons) |
| 9295 { | |
| 9296 struct device *d = XDEVICE (XCAR (devcons)); | |
| 9297 Lisp_Object frmcons; | |
| 9298 | |
| 1279 | 9299 if (DEVICE_STREAM_P (d)) |
| 9300 continue; | |
| 9301 | |
| 428 | 9302 DEVICE_FRAME_LOOP (frmcons, d) |
| 9303 { | |
| 9304 struct frame *f = XFRAME (XCAR (frmcons)); | |
| 853 | 9305 int depth; |
| 428 | 9306 |
| 9307 if (FRAME_REPAINT_P (f) && FRAME_HAS_MINIBUF_P (f)) | |
| 9308 { | |
| 9309 Lisp_Object window = FRAME_MINIBUF_WINDOW (f); | |
| 442 | 9310 |
| 9311 MAYBE_DEVMETH (d, frame_output_begin, (f)); | |
| 9312 | |
| 428 | 9313 /* |
| 9314 * If the frame size has changed, there may be random | |
| 9315 * chud on the screen left from previous messages | |
| 9316 * because redisplay_frame hasn't been called yet. | |
| 9317 * Clear the screen to get rid of the potential mess. | |
| 9318 */ | |
| 9319 if (f->echo_area_garbaged) | |
| 9320 { | |
| 442 | 9321 MAYBE_DEVMETH (d, clear_frame, (f)); |
| 428 | 9322 f->echo_area_garbaged = 0; |
| 9323 } | |
| 853 | 9324 depth = enter_redisplay_critical_section (); |
| 428 | 9325 redisplay_window (window, 0); |
| 853 | 9326 exit_redisplay_critical_section (depth); |
| 442 | 9327 MAYBE_DEVMETH (d, frame_output_end, (f)); |
| 428 | 9328 } |
| 9329 } | |
| 9330 } | |
| 9331 | |
| 9332 return Qnil; | |
| 9333 } | |
| 9334 | |
| 9335 DEFUN ("redraw-frame", Fredraw_frame, 0, 2, 0, /* | |
| 9336 Clear frame FRAME and output again what is supposed to appear on it. | |
| 9337 FRAME defaults to the selected frame if omitted. | |
| 9338 Normally, redisplay is preempted as normal if input arrives. However, | |
| 9339 if optional second arg NO-PREEMPT is non-nil, redisplay will not stop for | |
| 9340 input and is guaranteed to proceed to completion. | |
| 9341 */ | |
| 9342 (frame, no_preempt)) | |
| 9343 { | |
| 9344 struct frame *f = decode_frame (frame); | |
| 9345 int count = specpdl_depth (); | |
| 9346 | |
| 9347 if (!NILP (no_preempt)) | |
| 853 | 9348 internal_bind_int (&disable_preemption, 1 + disable_preemption); |
| 428 | 9349 |
| 9350 f->clear = 1; | |
| 9351 redisplay_frame (f, 1); | |
| 9352 | |
| 442 | 9353 /* See the comment in Fredisplay_frame. */ |
| 9354 RESET_CHANGED_SET_FLAGS; | |
| 9355 | |
| 771 | 9356 return unbind_to (count); |
| 428 | 9357 } |
| 9358 | |
| 9359 DEFUN ("redisplay-frame", Fredisplay_frame, 0, 2, 0, /* | |
| 9360 Ensure that FRAME's contents are correctly displayed. | |
| 9361 This differs from `redraw-frame' in that it only redraws what needs to | |
| 9362 be updated, as opposed to unconditionally clearing and redrawing | |
| 9363 the frame. | |
| 9364 FRAME defaults to the selected frame if omitted. | |
| 9365 Normally, redisplay is preempted as normal if input arrives. However, | |
| 9366 if optional second arg NO-PREEMPT is non-nil, redisplay will not stop for | |
| 9367 input and is guaranteed to proceed to completion. | |
| 9368 */ | |
| 9369 (frame, no_preempt)) | |
| 9370 { | |
| 9371 struct frame *f = decode_frame (frame); | |
| 9372 int count = specpdl_depth (); | |
| 9373 | |
| 9374 if (!NILP (no_preempt)) | |
| 853 | 9375 internal_bind_int (&disable_preemption, 1 + disable_preemption); |
| 428 | 9376 |
| 9377 redisplay_frame (f, 1); | |
| 9378 | |
| 442 | 9379 /* If we don't reset the global redisplay flags here, subsequent |
| 9380 changes to the display will not get registered by redisplay | |
| 9381 because it thinks it already has registered changes. If you | |
| 9382 really knew what you were doing you could confuse redisplay by | |
| 9383 calling Fredisplay_frame while updating another frame. We assume | |
| 9384 that if you know what you are doing you will not be that | |
| 9385 stupid. */ | |
| 9386 RESET_CHANGED_SET_FLAGS; | |
| 9387 | |
| 771 | 9388 return unbind_to (count); |
| 428 | 9389 } |
| 9390 | |
| 9391 DEFUN ("redraw-device", Fredraw_device, 0, 2, 0, /* | |
| 9392 Clear device DEVICE and output again what is supposed to appear on it. | |
| 9393 DEVICE defaults to the selected device if omitted. | |
| 9394 Normally, redisplay is preempted as normal if input arrives. However, | |
| 9395 if optional second arg NO-PREEMPT is non-nil, redisplay will not stop for | |
| 9396 input and is guaranteed to proceed to completion. | |
| 9397 */ | |
| 9398 (device, no_preempt)) | |
| 9399 { | |
| 9400 struct device *d = decode_device (device); | |
| 9401 Lisp_Object frmcons; | |
| 9402 int count = specpdl_depth (); | |
| 9403 | |
| 9404 if (!NILP (no_preempt)) | |
| 853 | 9405 internal_bind_int (&disable_preemption, 1 + disable_preemption); |
| 428 | 9406 |
| 9407 DEVICE_FRAME_LOOP (frmcons, d) | |
| 9408 { | |
| 9409 XFRAME (XCAR (frmcons))->clear = 1; | |
| 9410 } | |
| 440 | 9411 redisplay_device (d, 0); |
| 428 | 9412 |
| 442 | 9413 /* See the comment in Fredisplay_frame. */ |
| 9414 RESET_CHANGED_SET_FLAGS; | |
| 9415 | |
| 771 | 9416 return unbind_to (count); |
| 428 | 9417 } |
| 9418 | |
| 9419 DEFUN ("redisplay-device", Fredisplay_device, 0, 2, 0, /* | |
| 9420 Ensure that DEVICE's contents are correctly displayed. | |
| 9421 This differs from `redraw-device' in that it only redraws what needs to | |
| 9422 be updated, as opposed to unconditionally clearing and redrawing | |
| 9423 the device. | |
| 9424 DEVICE defaults to the selected device if omitted. | |
| 9425 Normally, redisplay is preempted as normal if input arrives. However, | |
| 9426 if optional second arg NO-PREEMPT is non-nil, redisplay will not stop for | |
| 9427 input and is guaranteed to proceed to completion. | |
| 853 | 9428 |
| 9429 Note: If you simply want everything redisplayed, the current idiom is | |
| 9430 `(sit-for 0)'. | |
| 428 | 9431 */ |
| 9432 (device, no_preempt)) | |
| 9433 { | |
| 9434 struct device *d = decode_device (device); | |
| 9435 int count = specpdl_depth (); | |
| 9436 | |
| 9437 if (!NILP (no_preempt)) | |
| 853 | 9438 internal_bind_int (&disable_preemption, 1 + disable_preemption); |
| 428 | 9439 |
| 440 | 9440 redisplay_device (d, 0); |
| 428 | 9441 |
| 442 | 9442 /* See the comment in Fredisplay_frame. */ |
| 9443 RESET_CHANGED_SET_FLAGS; | |
| 9444 | |
| 771 | 9445 return unbind_to (count); |
| 428 | 9446 } |
| 9447 | |
| 9448 /* Big lie. Big lie. This will force all modelines to be updated | |
| 9449 regardless if the all flag is set or not. It remains in existence | |
| 9450 solely for backwards compatibility. */ | |
| 9451 DEFUN ("redraw-modeline", Fredraw_modeline, 0, 1, 0, /* | |
| 9452 Force the modeline of the current buffer to be redisplayed. | |
| 9453 With optional non-nil ALL, force redisplay of all modelines. | |
| 9454 */ | |
| 2286 | 9455 (UNUSED (all))) |
| 428 | 9456 { |
| 9457 MARK_MODELINE_CHANGED; | |
| 9458 return Qnil; | |
| 9459 } | |
| 9460 | |
| 9461 DEFUN ("force-cursor-redisplay", Fforce_cursor_redisplay, 0, 1, 0, /* | |
| 9462 Force an immediate update of the cursor on FRAME. | |
| 9463 FRAME defaults to the selected frame if omitted. | |
| 9464 */ | |
| 9465 (frame)) | |
| 9466 { | |
| 1279 | 9467 struct frame *f = decode_frame (frame); |
| 9468 | |
| 9469 if (!FRAME_STREAM_P (f)) | |
| 9470 redisplay_redraw_cursor (f, 1); | |
| 428 | 9471 return Qnil; |
| 9472 } | |
| 9473 | |
| 9474 | |
| 9475 /***************************************************************************/ | |
| 9476 /* */ | |
| 872 | 9477 /* Change flags */ |
| 428 | 9478 /* */ |
| 9479 /***************************************************************************/ | |
| 9480 | |
| 9481 static void | |
| 2286 | 9482 margin_width_changed_in_frame (Lisp_Object UNUSED (specifier), |
| 9483 struct frame *UNUSED (f), | |
| 9484 Lisp_Object UNUSED (oldval)) | |
| 428 | 9485 { |
| 9486 /* Nothing to be done? */ | |
| 9487 } | |
| 9488 | |
| 9489 int | |
| 2286 | 9490 redisplay_variable_changed (Lisp_Object UNUSED (sym), |
| 9491 Lisp_Object *UNUSED (val), | |
| 9492 Lisp_Object UNUSED (in_object), | |
| 9493 int UNUSED (flags)) | |
| 428 | 9494 { |
| 9495 /* #### clip_changed should really be renamed something like | |
| 9496 global_redisplay_change. */ | |
| 9497 MARK_CLIP_CHANGED; | |
| 9498 return 0; | |
| 9499 } | |
| 9500 | |
| 9501 /* This is called if the built-in glyphs have their properties | |
| 9502 changed. */ | |
| 9503 void | |
| 2286 | 9504 redisplay_glyph_changed (Lisp_Object UNUSED (glyph), |
| 9505 Lisp_Object UNUSED (property), Lisp_Object locale) | |
| 428 | 9506 { |
| 9507 if (WINDOWP (locale)) | |
| 9508 { | |
| 9509 MARK_FRAME_GLYPHS_CHANGED (XFRAME (WINDOW_FRAME (XWINDOW (locale)))); | |
| 9510 } | |
| 9511 else if (FRAMEP (locale)) | |
| 9512 { | |
| 9513 MARK_FRAME_GLYPHS_CHANGED (XFRAME (locale)); | |
| 9514 } | |
| 9515 else if (DEVICEP (locale)) | |
| 9516 { | |
| 9517 Lisp_Object frmcons; | |
| 9518 DEVICE_FRAME_LOOP (frmcons, XDEVICE (locale)) | |
| 9519 MARK_FRAME_GLYPHS_CHANGED (XFRAME (XCAR (frmcons))); | |
| 9520 } | |
| 9521 else if (CONSOLEP (locale)) | |
| 9522 { | |
| 9523 Lisp_Object frmcons, devcons; | |
| 9524 CONSOLE_FRAME_LOOP_NO_BREAK (frmcons, devcons, XCONSOLE (locale)) | |
| 9525 MARK_FRAME_GLYPHS_CHANGED (XFRAME (XCAR (frmcons))); | |
| 9526 } | |
| 9527 else /* global or buffer */ | |
| 9528 { | |
| 9529 Lisp_Object frmcons, devcons, concons; | |
| 9530 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons) | |
| 9531 MARK_FRAME_GLYPHS_CHANGED (XFRAME (XCAR (frmcons))); | |
| 9532 } | |
| 9533 } | |
| 9534 | |
| 9535 static void | |
| 2286 | 9536 text_cursor_visible_p_changed (Lisp_Object UNUSED (specifier), |
| 9537 struct window *w, Lisp_Object UNUSED (oldval)) | |
| 428 | 9538 { |
| 9539 if (XFRAME (w->frame)->init_finished) | |
| 9540 Fforce_cursor_redisplay (w->frame); | |
| 9541 } | |
| 9542 | |
| 872 | 9543 void |
| 9544 mark_buffers_changed (void) | |
| 9545 { | |
| 9546 MARK_TYPE_CHANGED (buffers); | |
| 9547 } | |
| 9548 | |
| 9549 void | |
| 9550 mark_clip_changed (void) | |
| 9551 { | |
| 9552 MARK_TYPE_CHANGED (clip); | |
| 9553 } | |
| 9554 | |
| 9555 void | |
| 9556 mark_extents_changed (void) | |
| 9557 { | |
| 9558 MARK_TYPE_CHANGED (extents); | |
| 9559 } | |
| 9560 | |
| 9561 void | |
| 9562 mark_icon_changed (void) | |
| 9563 { | |
| 9564 MARK_TYPE_CHANGED (icon); | |
| 9565 } | |
| 9566 | |
| 9567 void | |
| 9568 mark_menubar_changed (void) | |
| 9569 { | |
| 9570 MARK_TYPE_CHANGED (menubar); | |
| 9571 } | |
| 9572 | |
| 9573 void | |
| 9574 mark_modeline_changed (void) | |
| 9575 { | |
| 9576 MARK_TYPE_CHANGED (modeline); | |
| 9577 } | |
| 9578 | |
| 9579 void | |
| 9580 mark_point_changed (void) | |
| 9581 { | |
| 9582 MARK_TYPE_CHANGED (point); | |
| 9583 } | |
| 9584 | |
| 9585 void | |
| 9586 mark_toolbar_changed (void) | |
| 9587 { | |
| 9588 MARK_TYPE_CHANGED (toolbar); | |
| 9589 } | |
| 9590 | |
| 9591 void | |
| 9592 mark_gutter_changed (void) | |
| 9593 { | |
| 9594 MARK_TYPE_CHANGED (gutter); | |
| 9595 } | |
| 9596 | |
| 9597 void | |
| 9598 mark_glyphs_changed (void) | |
| 9599 { | |
| 9600 MARK_TYPE_CHANGED (glyphs); | |
| 9601 } | |
| 9602 | |
| 9603 void | |
| 9604 mark_subwindows_changed (void) | |
| 9605 { | |
| 9606 MARK_TYPE_CHANGED (subwindows); | |
| 9607 } | |
| 9608 | |
| 9609 void | |
| 9610 mark_subwindows_state_changed (void) | |
| 9611 { | |
| 9612 MARK_TYPE_CHANGED (subwindows_state); | |
| 9613 } | |
| 9614 | |
| 428 | 9615 #ifdef MEMORY_USAGE_STATS |
| 9616 | |
| 9617 | |
| 9618 /***************************************************************************/ | |
| 9619 /* */ | |
| 9620 /* memory usage computation */ | |
| 9621 /* */ | |
| 9622 /***************************************************************************/ | |
| 9623 | |
| 9624 static int | |
| 9625 compute_rune_dynarr_usage (rune_dynarr *dyn, struct overhead_stats *ovstats) | |
| 9626 { | |
| 9627 return dyn ? Dynarr_memory_usage (dyn, ovstats) : 0; | |
| 9628 } | |
| 9629 | |
| 9630 static int | |
| 9631 compute_display_block_dynarr_usage (display_block_dynarr *dyn, | |
| 9632 struct overhead_stats *ovstats) | |
| 9633 { | |
| 9634 int total, i; | |
| 9635 | |
| 9636 if (!dyn) | |
| 9637 return 0; | |
| 9638 | |
| 9639 total = Dynarr_memory_usage (dyn, ovstats); | |
| 9640 for (i = 0; i < Dynarr_largest (dyn); i++) | |
| 9641 total += compute_rune_dynarr_usage (Dynarr_at (dyn, i).runes, ovstats); | |
| 9642 | |
| 9643 return total; | |
| 9644 } | |
| 9645 | |
| 9646 static int | |
| 9647 compute_glyph_block_dynarr_usage (glyph_block_dynarr *dyn, | |
| 9648 struct overhead_stats *ovstats) | |
| 9649 { | |
| 9650 return dyn ? Dynarr_memory_usage (dyn, ovstats) : 0; | |
| 9651 } | |
| 9652 | |
| 9653 int | |
| 9654 compute_display_line_dynarr_usage (display_line_dynarr *dyn, | |
| 9655 struct overhead_stats *ovstats) | |
| 9656 { | |
| 9657 int total, i; | |
| 9658 | |
| 9659 if (!dyn) | |
| 9660 return 0; | |
| 9661 | |
| 9662 total = Dynarr_memory_usage (dyn, ovstats); | |
| 9663 for (i = 0; i < Dynarr_largest (dyn); i++) | |
| 9664 { | |
| 9665 struct display_line *dl = &Dynarr_at (dyn, i); | |
| 9666 total += compute_display_block_dynarr_usage(dl->display_blocks, ovstats); | |
| 9667 total += compute_glyph_block_dynarr_usage (dl->left_glyphs, ovstats); | |
| 9668 total += compute_glyph_block_dynarr_usage (dl->right_glyphs, ovstats); | |
| 9669 } | |
| 9670 | |
| 9671 return total; | |
| 9672 } | |
| 9673 | |
| 9674 int | |
| 9675 compute_line_start_cache_dynarr_usage (line_start_cache_dynarr *dyn, | |
| 9676 struct overhead_stats *ovstats) | |
| 9677 { | |
| 9678 return dyn ? Dynarr_memory_usage (dyn, ovstats) : 0; | |
| 9679 } | |
| 9680 | |
| 9681 #endif /* MEMORY_USAGE_STATS */ | |
| 9682 | |
| 1204 | 9683 #ifdef ERROR_CHECK_DISPLAY |
| 9684 | |
| 800 | 9685 static int |
| 2286 | 9686 sledgehammer_check_redisplay_structs_1 (struct window *w, |
| 9687 void *UNUSED (closure)) | |
| 800 | 9688 { |
| 9689 int i, j; | |
| 9690 display_line_dynarr *dl; | |
| 9691 | |
| 9692 dl = window_display_lines (w, CURRENT_DISP); | |
| 4187 | 9693 |
| 800 | 9694 for (i = 0; i < Dynarr_largest (dl); i++) |
| 9695 for (j = i + 1; j < Dynarr_largest (dl); j++) | |
| 9696 assert (Dynarr_atp (dl, i)->display_blocks != | |
| 9697 Dynarr_atp (dl, j)->display_blocks); | |
| 9698 | |
| 9699 dl = window_display_lines (w, DESIRED_DISP); | |
| 9700 | |
| 9701 for (i = 0; i < Dynarr_largest (dl); i++) | |
| 9702 for (j = i + 1; j < Dynarr_largest (dl); j++) | |
| 9703 assert (Dynarr_atp (dl, i)->display_blocks != | |
| 9704 Dynarr_atp (dl, j)->display_blocks); | |
| 9705 | |
| 9706 return 0; | |
| 9707 } | |
| 9708 | |
| 9709 static void | |
| 9710 sledgehammer_check_redisplay_structs (void) | |
| 9711 { | |
| 9712 map_windows (0, sledgehammer_check_redisplay_structs_1, NULL); | |
| 9713 } | |
| 9714 | |
| 1204 | 9715 #endif /* ERROR_CHECK_DISPLAY */ |
| 9716 | |
| 428 | 9717 |
| 9718 /***************************************************************************/ | |
| 9719 /* */ | |
| 9720 /* initialization */ | |
| 9721 /* */ | |
| 9722 /***************************************************************************/ | |
| 9723 | |
| 9724 void | |
| 9725 init_redisplay (void) | |
| 9726 { | |
| 9727 disable_preemption = 0; | |
| 9728 preemption_count = 0; | |
| 9729 | |
| 9730 #ifndef PDUMP | |
| 9731 if (!initialized) | |
| 9732 #endif | |
| 9733 { | |
| 440 | 9734 if (!cmotion_display_lines) |
| 9735 cmotion_display_lines = Dynarr_new (display_line); | |
| 867 | 9736 if (!mode_spec_ibyte_string) |
| 9737 mode_spec_ibyte_string = Dynarr_new (Ibyte); | |
| 440 | 9738 if (!formatted_string_extent_dynarr) |
| 9739 formatted_string_extent_dynarr = Dynarr_new (EXTENT); | |
| 9740 if (!formatted_string_extent_start_dynarr) | |
| 9741 formatted_string_extent_start_dynarr = Dynarr_new (Bytecount); | |
| 9742 if (!formatted_string_extent_end_dynarr) | |
| 9743 formatted_string_extent_end_dynarr = Dynarr_new (Bytecount); | |
| 9744 if (!internal_cache) | |
| 9745 internal_cache = Dynarr_new (line_start_cache); | |
| 428 | 9746 } |
| 9747 | |
|
4477
e34711681f30
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4418
diff
changeset
|
9748 if (!initialized) |
| 428 | 9749 return; |
| 9750 | |
|
4477
e34711681f30
Don't determine whether to call general device-type code at startup,
Aidan Kehoe <kehoea@parhasard.net>
parents:
4418
diff
changeset
|
9751 if (noninteractive) |
|
e34711681f30
Don't determine whether to call general device-type code at startup,
Aidan Kehoe <kehoea@parhasard.net>
parents:
4418
diff
changeset
|
9752 { |
|
e34711681f30
Don't determine whether to call general device-type code at startup,
Aidan Kehoe <kehoea@parhasard.net>
parents:
4418
diff
changeset
|
9753 Vinitial_device_type = Qstream; |
|
e34711681f30
Don't determine whether to call general device-type code at startup,
Aidan Kehoe <kehoea@parhasard.net>
parents:
4418
diff
changeset
|
9754 return; |
|
e34711681f30
Don't determine whether to call general device-type code at startup,
Aidan Kehoe <kehoea@parhasard.net>
parents:
4418
diff
changeset
|
9755 } |
|
e34711681f30
Don't determine whether to call general device-type code at startup,
Aidan Kehoe <kehoea@parhasard.net>
parents:
4418
diff
changeset
|
9756 |
| 428 | 9757 /* If the user wants to use a window system, we shouldn't bother |
| 9758 initializing the terminal. This is especially important when the | |
| 9759 terminal is so dumb that emacs gives up before and doesn't bother | |
| 9760 using the window system. | |
| 9761 | |
| 9762 If the DISPLAY environment variable is set, try to use X, and die | |
| 9763 with an error message if that doesn't work. */ | |
| 9764 | |
| 9765 #ifdef HAVE_X_WINDOWS | |
| 9766 if (!strcmp (display_use, "x")) | |
| 9767 { | |
| 9768 /* Some stuff checks this way early. */ | |
| 9769 Vwindow_system = Qx; | |
|
4477
e34711681f30
Don't determine whether to call general device-type code at startup,
Aidan Kehoe <kehoea@parhasard.net>
parents:
4418
diff
changeset
|
9770 Vinitial_device_type = Qx; |
| 428 | 9771 return; |
| 9772 } | |
| 9773 #endif /* HAVE_X_WINDOWS */ | |
| 9774 | |
| 462 | 9775 #ifdef HAVE_GTK |
| 9776 if (!strcmp (display_use, "gtk")) | |
| 9777 { | |
| 9778 Vwindow_system = Qgtk; | |
|
4477
e34711681f30
Don't determine whether to call general device-type code at startup,
Aidan Kehoe <kehoea@parhasard.net>
parents:
4418
diff
changeset
|
9779 Vinitial_device_type = Qgtk; |
| 462 | 9780 return; |
| 9781 } | |
| 9782 #endif | |
| 9783 | |
| 428 | 9784 #ifdef HAVE_MS_WINDOWS |
| 9785 if (!strcmp (display_use, "mswindows")) | |
| 9786 { | |
| 9787 /* Some stuff checks this way early. */ | |
| 9788 Vwindow_system = Qmswindows; | |
|
4477
e34711681f30
Don't determine whether to call general device-type code at startup,
Aidan Kehoe <kehoea@parhasard.net>
parents:
4418
diff
changeset
|
9789 Vinitial_device_type = Qmswindows; |
| 428 | 9790 return; |
| 9791 } | |
| 9792 #endif /* HAVE_MS_WINDOWS */ | |
| 9793 | |
| 9794 #ifdef HAVE_TTY | |
| 9795 /* If no window system has been specified, try to use the terminal. */ | |
| 9796 if (!isatty (0)) | |
| 9797 { | |
| 9798 stderr_out ("XEmacs: standard input is not a tty\n"); | |
| 9799 exit (1); | |
| 9800 } | |
| 9801 | |
| 9802 /* Look at the TERM variable */ | |
| 771 | 9803 if (!egetenv ("TERM")) |
| 428 | 9804 { |
| 9805 stderr_out ("Please set the environment variable TERM; see tset(1).\n"); | |
| 9806 exit (1); | |
| 9807 } | |
| 9808 | |
|
4477
e34711681f30
Don't determine whether to call general device-type code at startup,
Aidan Kehoe <kehoea@parhasard.net>
parents:
4418
diff
changeset
|
9809 Vinitial_device_type = Qtty; |
| 428 | 9810 return; |
| 9811 #else /* not HAVE_TTY */ | |
| 9812 /* No DISPLAY specified, and no TTY support. */ | |
| 9813 stderr_out ("XEmacs: Cannot open display.\n\ | |
| 9814 Please set the environmental variable DISPLAY to an appropriate value.\n"); | |
| 9815 exit (1); | |
| 9816 #endif | |
| 9817 /* Unreached. */ | |
| 9818 } | |
| 9819 | |
| 9820 void | |
| 9821 syms_of_redisplay (void) | |
| 9822 { | |
| 563 | 9823 DEFSYMBOL (Qcursor_in_echo_area); |
| 9824 DEFSYMBOL (Qdisplay_warning_buffer); | |
| 9825 DEFSYMBOL (Qbar_cursor); | |
| 9826 DEFSYMBOL (Qtop_bottom); | |
| 9827 DEFSYMBOL (Qbuffer_list_changed_hook); | |
| 428 | 9828 |
| 9829 DEFSUBR (Fredisplay_echo_area); | |
| 9830 DEFSUBR (Fredraw_frame); | |
| 9831 DEFSUBR (Fredisplay_frame); | |
| 9832 DEFSUBR (Fredraw_device); | |
| 9833 DEFSUBR (Fredisplay_device); | |
| 9834 DEFSUBR (Fredraw_modeline); | |
| 9835 DEFSUBR (Fforce_cursor_redisplay); | |
| 9836 } | |
| 9837 | |
| 9838 void | |
| 9839 vars_of_redisplay (void) | |
| 9840 { | |
| 1292 | 9841 QSin_redisplay = build_msg_string ("(in redisplay)"); |
| 9842 staticpro (&QSin_redisplay); | |
| 428 | 9843 |
| 1318 | 9844 Vpost_redisplay_actions = Qnil; |
| 9845 staticpro (&Vpost_redisplay_actions); | |
| 9846 | |
| 428 | 9847 #if 0 |
| 9848 staticpro (&last_arrow_position); | |
| 9849 staticpro (&last_arrow_string); | |
| 9850 last_arrow_position = Qnil; | |
| 9851 last_arrow_string = Qnil; | |
| 9852 #endif /* 0 */ | |
| 9853 | |
| 9854 /* #### Probably temporary */ | |
| 9855 DEFVAR_INT ("redisplay-cache-adjustment", &cache_adjustment /* | |
| 9856 \(Temporary) Setting this will impact the performance of the internal | |
| 9857 line start cache. | |
| 9858 */ ); | |
| 9859 cache_adjustment = 2; | |
| 9860 | |
| 1268 | 9861 DEFVAR_INT ("maximum-preempts", &max_preempts /* |
| 9862 Maximum number of times redisplay can be preempted by user input. | |
| 9863 */ ); | |
| 9864 max_preempts = INIT_MAX_PREEMPTS; | |
| 9865 | |
| 428 | 9866 DEFVAR_INT_MAGIC ("pixel-vertical-clip-threshold", &vertical_clip /* |
| 9867 Minimum pixel height for clipped bottom display line. | |
| 9868 A clipped line shorter than this won't be displayed. | |
| 9869 */ , | |
| 9870 redisplay_variable_changed); | |
| 9871 vertical_clip = 5; | |
| 9872 | |
| 9873 DEFVAR_INT_MAGIC ("pixel-horizontal-clip-threshold", &horizontal_clip /* | |
| 9874 Minimum visible area for clipped glyphs at right boundary. | |
| 9875 Clipped glyphs shorter than this won't be displayed. | |
| 9876 Only pixmap glyph instances are currently allowed to be clipped. | |
| 9877 */ , | |
| 9878 redisplay_variable_changed); | |
| 9879 horizontal_clip = 5; | |
| 9880 | |
| 9881 DEFVAR_LISP ("global-mode-string", &Vglobal_mode_string /* | |
| 9882 String displayed by modeline-format's "%m" specification. | |
| 9883 */ ); | |
| 9884 Vglobal_mode_string = Qnil; | |
| 9885 | |
| 9886 DEFVAR_LISP_MAGIC ("overlay-arrow-position", &Voverlay_arrow_position /* | |
| 9887 Marker for where to display an arrow on top of the buffer text. | |
| 9888 This must be the beginning of a line in order to work. | |
| 9889 See also `overlay-arrow-string'. | |
| 9890 */ , | |
| 9891 redisplay_variable_changed); | |
| 9892 Voverlay_arrow_position = Qnil; | |
| 9893 | |
| 9894 DEFVAR_LISP_MAGIC ("overlay-arrow-string", &Voverlay_arrow_string /* | |
| 442 | 9895 String or glyph to display as an arrow. See also `overlay-arrow-position'. |
| 444 | 9896 \(Note that despite the name of this variable, it can be set to a glyph as |
| 442 | 9897 well as a string.) |
| 428 | 9898 */ , |
| 9899 redisplay_variable_changed); | |
| 9900 Voverlay_arrow_string = Qnil; | |
| 9901 | |
| 9902 DEFVAR_INT ("scroll-step", &scroll_step /* | |
| 9903 *The number of lines to try scrolling a window by when point moves out. | |
| 9904 If that fails to bring point back on frame, point is centered instead. | |
| 9905 If this is zero, point is always centered after it moves off screen. | |
| 9906 */ ); | |
| 9907 scroll_step = 0; | |
| 9908 | |
| 9909 DEFVAR_INT ("scroll-conservatively", &scroll_conservatively /* | |
| 9910 *Scroll up to this many lines, to bring point back on screen. | |
| 9911 */ ); | |
| 9912 scroll_conservatively = 0; | |
| 9913 | |
| 9914 DEFVAR_BOOL_MAGIC ("truncate-partial-width-windows", | |
| 9915 &truncate_partial_width_windows /* | |
| 9916 *Non-nil means truncate lines in all windows less than full frame wide. | |
| 9917 */ , | |
| 9918 redisplay_variable_changed); | |
| 9919 truncate_partial_width_windows = 1; | |
| 9920 | |
| 442 | 9921 DEFVAR_LISP ("visible-bell", &Vvisible_bell /* |
| 9922 *Non-nil substitutes a visual signal for the audible bell. | |
| 9923 | |
| 9924 Default behavior is to flash the whole screen. On some platforms, | |
| 9925 special effects are available using the following values: | |
| 9926 | |
| 3025 | 9927 `display' Flash the whole screen (ie, the default behavior). |
| 9928 `top-bottom' Flash only the top and bottom lines of the selected frame. | |
| 442 | 9929 |
| 9930 When effects are unavailable on a platform, the visual bell is the | |
| 9931 default, whole screen. (Currently only X supports any special effects.) | |
| 428 | 9932 */ ); |
| 442 | 9933 Vvisible_bell = Qnil; |
| 428 | 9934 |
| 9935 DEFVAR_BOOL ("no-redraw-on-reenter", &no_redraw_on_reenter /* | |
| 9936 *Non-nil means no need to redraw entire frame after suspending. | |
| 9937 A non-nil value is useful if the terminal can automatically preserve | |
| 9938 Emacs's frame display when you reenter Emacs. | |
| 9939 It is up to you to set this variable if your terminal can do that. | |
| 9940 */ ); | |
| 9941 no_redraw_on_reenter = 0; | |
| 9942 | |
| 9943 DEFVAR_LISP ("window-system", &Vwindow_system /* | |
| 9944 A symbol naming the window-system under which Emacs is running, | |
| 9945 such as `x', or nil if emacs is running on an ordinary terminal. | |
| 9946 | |
| 9947 Do not use this variable, except for GNU Emacs compatibility, as it | |
| 9948 gives wrong values in a multi-device environment. Use `console-type' | |
| 9949 instead. | |
| 9950 */ ); | |
| 9951 Vwindow_system = Qnil; | |
| 9952 | |
|
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9953 DEFVAR_CONST_LISP ("initial-device-type", &Vinitial_device_type /* |
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9954 The type of the first XEmacs device to be created. |
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9955 |
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9956 This is constant; it's used by the command line handling code to communicate |
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9957 to Lisp what type the initial device to be created should be. |
| 428 | 9958 */ ); |
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9959 Vinitial_device_type = Qnil; |
| 428 | 9960 |
| 9961 DEFVAR_BOOL ("cursor-in-echo-area", &cursor_in_echo_area /* | |
| 9962 Non-nil means put cursor in minibuffer, at end of any message there. | |
| 9963 */ ); | |
| 9964 cursor_in_echo_area = 0; | |
| 9965 | |
| 9966 /* #### Shouldn't this be generalized as follows: | |
| 9967 | |
| 9968 if nil, use block cursor. | |
| 9969 if a number, use a bar cursor of that width. | |
| 9970 Otherwise, use a 1-pixel bar cursor. | |
| 9971 | |
| 9972 #### Or better yet, this variable should be trashed entirely | |
| 9973 (use a Lisp-magic variable to maintain compatibility) | |
| 9974 and a specifier `cursor-shape' added, which allows a block | |
| 9975 cursor, a bar cursor, a flashing block or bar cursor, | |
| 9976 maybe a caret cursor, etc. */ | |
| 9977 | |
| 9978 DEFVAR_LISP ("bar-cursor", &Vbar_cursor /* | |
| 448 | 9979 *Use vertical bar cursor if non-nil. If t width is 1 pixel, otherwise 2. |
| 428 | 9980 */ ); |
| 9981 Vbar_cursor = Qnil; | |
| 9982 | |
| 442 | 9983 DEFVAR_LISP ("buffer-list-changed-hook", &Vbuffer_list_changed_hook /* |
| 9984 Function or functions to call when a frame's buffer list has changed. | |
| 9985 This is called during redisplay, before redisplaying each frame. | |
| 9986 Functions on this hook are called with one argument, the frame. | |
| 9987 */ ); | |
| 9988 Vbuffer_list_changed_hook = Qnil; | |
| 9989 | |
| 428 | 9990 DEFVAR_INT ("display-warning-tick", &display_warning_tick /* |
| 9991 Bump this to tell the C code to call `display-warning-buffer' | |
| 9992 at next redisplay. You should not normally change this; the function | |
| 9993 `display-warning' automatically does this at appropriate times. | |
| 9994 */ ); | |
| 9995 display_warning_tick = 0; | |
| 9996 | |
| 9997 DEFVAR_BOOL ("inhibit-warning-display", &inhibit_warning_display /* | |
| 9998 Non-nil means inhibit display of warning messages. | |
| 9999 You should *bind* this, not set it. Any pending warning messages | |
| 10000 will be displayed when the binding no longer applies. | |
| 10001 */ ); | |
| 10002 /* reset to 0 by startup.el after the splash screen has displayed. | |
| 10003 This way, the warnings don't obliterate the splash screen. */ | |
| 10004 inhibit_warning_display = 1; | |
| 10005 | |
| 10006 DEFVAR_BOOL ("column-number-start-at-one", &column_number_start_at_one /* | |
| 10007 *Non-nil means column display number starts at 1. | |
| 10008 */ ); | |
| 10009 column_number_start_at_one = 0; | |
| 10010 } | |
| 10011 | |
| 10012 void | |
| 10013 specifier_vars_of_redisplay (void) | |
| 10014 { | |
| 10015 DEFVAR_SPECIFIER ("left-margin-width", &Vleft_margin_width /* | |
| 10016 *Width of left margin. | |
| 10017 This is a specifier; use `set-specifier' to change it. | |
| 10018 */ ); | |
| 10019 Vleft_margin_width = Fmake_specifier (Qnatnum); | |
| 10020 set_specifier_fallback (Vleft_margin_width, list1 (Fcons (Qnil, Qzero))); | |
| 10021 set_specifier_caching (Vleft_margin_width, | |
| 438 | 10022 offsetof (struct window, left_margin_width), |
| 428 | 10023 some_window_value_changed, |
| 438 | 10024 offsetof (struct frame, left_margin_width), |
| 444 | 10025 margin_width_changed_in_frame, 0); |
| 428 | 10026 |
| 10027 DEFVAR_SPECIFIER ("right-margin-width", &Vright_margin_width /* | |
| 10028 *Width of right margin. | |
| 10029 This is a specifier; use `set-specifier' to change it. | |
| 10030 */ ); | |
| 10031 Vright_margin_width = Fmake_specifier (Qnatnum); | |
| 10032 set_specifier_fallback (Vright_margin_width, list1 (Fcons (Qnil, Qzero))); | |
| 10033 set_specifier_caching (Vright_margin_width, | |
| 438 | 10034 offsetof (struct window, right_margin_width), |
| 428 | 10035 some_window_value_changed, |
| 438 | 10036 offsetof (struct frame, right_margin_width), |
| 444 | 10037 margin_width_changed_in_frame, 0); |
| 428 | 10038 |
| 10039 DEFVAR_SPECIFIER ("minimum-line-ascent", &Vminimum_line_ascent /* | |
| 10040 *Minimum ascent height of lines. | |
| 10041 This is a specifier; use `set-specifier' to change it. | |
| 10042 */ ); | |
| 10043 Vminimum_line_ascent = Fmake_specifier (Qnatnum); | |
| 10044 set_specifier_fallback (Vminimum_line_ascent, list1 (Fcons (Qnil, Qzero))); | |
| 10045 set_specifier_caching (Vminimum_line_ascent, | |
| 438 | 10046 offsetof (struct window, minimum_line_ascent), |
| 428 | 10047 some_window_value_changed, |
| 444 | 10048 0, 0, 0); |
| 428 | 10049 |
| 10050 DEFVAR_SPECIFIER ("minimum-line-descent", &Vminimum_line_descent /* | |
| 10051 *Minimum descent height of lines. | |
| 10052 This is a specifier; use `set-specifier' to change it. | |
| 10053 */ ); | |
| 10054 Vminimum_line_descent = Fmake_specifier (Qnatnum); | |
| 10055 set_specifier_fallback (Vminimum_line_descent, list1 (Fcons (Qnil, Qzero))); | |
| 10056 set_specifier_caching (Vminimum_line_descent, | |
| 438 | 10057 offsetof (struct window, minimum_line_descent), |
| 428 | 10058 some_window_value_changed, |
| 444 | 10059 0, 0, 0); |
| 428 | 10060 |
| 10061 DEFVAR_SPECIFIER ("use-left-overflow", &Vuse_left_overflow /* | |
| 10062 *Non-nil means use the left outside margin as extra whitespace when | |
| 3025 | 10063 displaying `whitespace' or `inside-margin' glyphs. |
| 428 | 10064 This is a specifier; use `set-specifier' to change it. |
| 10065 */ ); | |
| 10066 Vuse_left_overflow = Fmake_specifier (Qboolean); | |
| 10067 set_specifier_fallback (Vuse_left_overflow, list1 (Fcons (Qnil, Qnil))); | |
| 10068 set_specifier_caching (Vuse_left_overflow, | |
| 438 | 10069 offsetof (struct window, use_left_overflow), |
| 428 | 10070 some_window_value_changed, |
| 444 | 10071 0, 0, 0); |
| 428 | 10072 |
| 10073 DEFVAR_SPECIFIER ("use-right-overflow", &Vuse_right_overflow /* | |
| 10074 *Non-nil means use the right outside margin as extra whitespace when | |
| 3025 | 10075 displaying `whitespace' or `inside-margin' glyphs. |
| 428 | 10076 This is a specifier; use `set-specifier' to change it. |
| 10077 */ ); | |
| 10078 Vuse_right_overflow = Fmake_specifier (Qboolean); | |
| 10079 set_specifier_fallback (Vuse_right_overflow, list1 (Fcons (Qnil, Qnil))); | |
| 10080 set_specifier_caching (Vuse_right_overflow, | |
| 438 | 10081 offsetof (struct window, use_right_overflow), |
| 428 | 10082 some_window_value_changed, |
| 444 | 10083 0, 0, 0); |
| 428 | 10084 |
| 10085 DEFVAR_SPECIFIER ("text-cursor-visible-p", &Vtext_cursor_visible_p /* | |
| 10086 *Non-nil means the text cursor is visible (this is usually the case). | |
| 10087 This is a specifier; use `set-specifier' to change it. | |
| 10088 */ ); | |
| 10089 Vtext_cursor_visible_p = Fmake_specifier (Qboolean); | |
| 10090 set_specifier_fallback (Vtext_cursor_visible_p, list1 (Fcons (Qnil, Qt))); | |
| 10091 set_specifier_caching (Vtext_cursor_visible_p, | |
| 438 | 10092 offsetof (struct window, text_cursor_visible_p), |
| 428 | 10093 text_cursor_visible_p_changed, |
| 444 | 10094 0, 0, 0); |
| 428 | 10095 |
| 10096 } |