Mercurial > hg > xemacs-beta
annotate src/redisplay.c @ 4815:6540302eedf5
Fix query_string_geometry lookup domain
| author | Didier Verna <didier@lrde.epita.fr> |
|---|---|
| date | Sat, 09 Jan 2010 15:31:25 +0100 |
| parents | 726060ee587c |
| children | 91b3d00e717f |
| 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 { | |
| 1163 crb = Dynarr_atp (data->db->runes, Dynarr_length (data->db->runes)); | |
| 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. */ | |
| 4187 | 2439 if (*prop != ADD_FAILED |
| 819 | 2440 && Dynarr_atp (*prop, 0)->type == PROP_GLYPH |
| 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. */ | |
| 2451 if (EQ (Dynarr_end (tmpglyphs)->glyph, | |
| 2452 Dynarr_atp (*prop, 0)->data.p_glyph.glyph)) | |
| 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 { | |
| 2917 struct rune *rb = Dynarr_atp (db->runes, Dynarr_length (db->runes) - 1); | |
| 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 { | |
| 3832 struct rune *rb = | |
| 4187 | 3833 Dynarr_atp (db->runes, Dynarr_length (db->runes) - 1); |
| 438 | 3834 c_pixpos = rb->xpos + rb->width; |
| 3835 } | |
| 3836 else | |
| 3837 c_pixpos = min_pixpos; | |
| 3838 | |
| 3839 /* If we don't reach the right side of the window, add a blank rune | |
| 3840 to make up the difference. This usually only occurs if the | |
| 3841 modeline face is using a proportional width font or a fixed width | |
| 3842 font of a different size from the default face font. */ | |
| 3843 | |
| 3844 if (c_pixpos < max_pixpos) | |
| 3845 { | |
| 3846 data.pixpos = c_pixpos; | |
| 3847 data.blank_width = max_pixpos - data.pixpos; | |
| 3848 | |
| 3849 add_blank_rune (&data, NULL, 0); | |
| 3850 } | |
| 3851 | |
| 3852 /* Now create the result string and frob the extents into it. */ | |
| 3853 if (!NILP (result_str)) | |
| 3854 { | |
| 3855 int elt; | |
| 3856 Bytecount len; | |
| 867 | 3857 Ibyte *strdata; |
| 438 | 3858 struct buffer *buf = XBUFFER (WINDOW_BUFFER (w)); |
| 3859 | |
| 442 | 3860 in_modeline_generation = 1; |
| 3861 | |
| 771 | 3862 sledgehammer_check_ascii_begin (result_str); |
| 438 | 3863 detach_all_extents (result_str); |
| 793 | 3864 resize_string (result_str, -1, |
| 4187 | 3865 data.bytepos - XSTRING_LENGTH (result_str)); |
| 438 | 3866 |
| 3867 strdata = XSTRING_DATA (result_str); | |
| 3868 | |
| 3869 for (elt = 0, len = 0; elt < Dynarr_length (db->runes); elt++) | |
| 4187 | 3870 { |
| 3871 if (Dynarr_atp (db->runes, elt)->type == RUNE_CHAR) | |
| 3872 { | |
| 3873 len += (set_itext_ichar | |
| 3874 (strdata + len, Dynarr_atp (db->runes, | |
| 3875 elt)->object.chr.ch)); | |
| 3876 } | |
| 3877 } | |
| 438 | 3878 |
| 771 | 3879 init_string_ascii_begin (result_str); |
| 3880 bump_string_modiff (result_str); | |
| 3881 sledgehammer_check_ascii_begin (result_str); | |
| 3882 | |
| 438 | 3883 for (elt = 0; elt < Dynarr_length (formatted_string_extent_dynarr); |
| 4187 | 3884 elt++) |
| 3885 { | |
| 3886 Lisp_Object extent = Qnil; | |
| 3887 Lisp_Object child; | |
| 3888 | |
| 3889 extent = wrap_extent (Dynarr_at (formatted_string_extent_dynarr, elt)); | |
| 3890 child = Fgethash (extent, buf->modeline_extent_table, Qnil); | |
| 3891 if (NILP (child)) | |
| 3892 { | |
| 3893 child = Fmake_extent (Qnil, Qnil, result_str); | |
| 3894 Fputhash (extent, child, buf->modeline_extent_table); | |
| 3895 } | |
| 3896 Fset_extent_parent (child, extent); | |
| 3897 set_extent_endpoints | |
| 3898 (XEXTENT (child), | |
| 3899 Dynarr_at (formatted_string_extent_start_dynarr, elt), | |
| 3900 Dynarr_at (formatted_string_extent_end_dynarr, elt), | |
| 3901 result_str); | |
| 3902 } | |
| 442 | 3903 |
| 3904 in_modeline_generation = 0; | |
| 438 | 3905 } |
| 3906 } | |
| 3907 | |
| 428 | 3908 /* Ensure that the given display line DL accurately represents the |
| 3909 modeline for the given window. */ | |
| 3910 static void | |
| 3911 generate_modeline (struct window *w, struct display_line *dl, int type) | |
| 3912 { | |
| 3913 struct buffer *b = XBUFFER (w->buffer); | |
| 3914 struct frame *f = XFRAME (w->frame); | |
| 3915 struct device *d = XDEVICE (f->device); | |
| 3916 | |
| 3917 /* Unlike display line and rune pointers, this one can't change underneath | |
| 3918 our feet. */ | |
| 3919 struct display_block *db = get_display_block_from_line (dl, TEXT); | |
| 3920 int max_pixpos, min_pixpos, ypos_adj; | |
| 3921 Lisp_Object font_inst; | |
| 3922 | |
| 3923 /* This will actually determine incorrect inside boundaries for the | |
| 3924 modeline since it ignores the margins. However being aware of this fact | |
| 3925 we never use those values anywhere so it doesn't matter. */ | |
| 3926 dl->bounds = calculate_display_line_boundaries (w, 1); | |
| 3927 | |
| 3928 /* We are generating a modeline. */ | |
| 3929 dl->modeline = 1; | |
| 3930 dl->cursor_elt = -1; | |
| 3931 | |
| 3932 /* Reset the runes on the modeline. */ | |
| 3933 Dynarr_reset (db->runes); | |
| 3934 | |
| 3935 if (!WINDOW_HAS_MODELINE_P (w)) | |
| 3936 { | |
| 3937 struct rune rb; | |
| 3938 | |
| 3939 /* If there is a horizontal scrollbar, don't add anything. */ | |
| 3940 if (window_scrollbar_height (w)) | |
| 3941 return; | |
| 3942 | |
| 3943 dl->ascent = DEVMETH (d, divider_height, ()); | |
| 3944 dl->descent = 0; | |
| 3945 /* The modeline is at the bottom of the gutters. */ | |
| 3946 dl->ypos = WINDOW_BOTTOM (w); | |
| 3947 | |
| 3948 rb.findex = MODELINE_INDEX; | |
| 3949 rb.xpos = dl->bounds.left_out; | |
| 3950 rb.width = dl->bounds.right_out - dl->bounds.left_out; | |
| 826 | 3951 rb.charpos = 0; |
| 428 | 3952 rb.endpos = 0; |
| 3953 rb.type = RUNE_HLINE; | |
| 3954 rb.object.hline.thickness = 1; | |
| 3955 rb.object.hline.yoffset = 0; | |
| 3956 rb.cursor_type = NO_CURSOR; | |
| 3957 | |
| 3958 if (!EQ (Qzero, w->modeline_shadow_thickness) | |
| 3959 && FRAME_WIN_P (f)) | |
| 3960 { | |
| 3961 int shadow_thickness = MODELINE_SHADOW_THICKNESS (w); | |
| 3962 | |
| 3963 dl->ypos -= shadow_thickness; | |
| 3964 rb.xpos += shadow_thickness; | |
| 3965 rb.width -= 2 * shadow_thickness; | |
| 3966 } | |
| 3967 | |
| 3968 Dynarr_add (db->runes, rb); | |
| 3969 return; | |
| 3970 } | |
| 3971 | |
| 3972 /* !!#### not right; needs to compute the max height of | |
| 3973 all the charsets */ | |
| 3974 font_inst = WINDOW_FACE_CACHEL_FONT (w, MODELINE_INDEX, Vcharset_ascii); | |
| 3975 | |
| 3976 dl->ascent = XFONT_INSTANCE (font_inst)->ascent; | |
| 3977 dl->descent = XFONT_INSTANCE (font_inst)->descent; | |
| 3978 | |
| 3979 min_pixpos = dl->bounds.left_out; | |
| 3980 max_pixpos = dl->bounds.right_out; | |
| 3981 | |
| 3982 if (!EQ (Qzero, w->modeline_shadow_thickness) && FRAME_WIN_P (f)) | |
| 3983 { | |
| 3984 int shadow_thickness = MODELINE_SHADOW_THICKNESS (w); | |
| 3985 | |
| 3986 ypos_adj = shadow_thickness; | |
| 3987 min_pixpos += shadow_thickness; | |
| 3988 max_pixpos -= shadow_thickness; | |
| 3989 } | |
| 3990 else | |
| 3991 ypos_adj = 0; | |
| 3992 | |
| 3993 generate_formatted_string_db (b->modeline_format, | |
| 3994 b->generated_modeline_string, w, dl, db, | |
| 3995 MODELINE_INDEX, min_pixpos, max_pixpos, type); | |
| 3996 | |
| 3997 /* The modeline is at the bottom of the gutters. We have to wait to | |
| 3998 set this until we've generated the modeline in order to account | |
| 3999 for any embedded faces. */ | |
| 4000 dl->ypos = WINDOW_BOTTOM (w) - dl->descent - ypos_adj; | |
| 4001 } | |
| 4002 | |
| 4003 static Charcount | |
| 867 | 4004 add_string_to_fstring_db_runes (pos_data *data, const Ibyte *str, |
| 4187 | 4005 Charcount pos, Charcount min_pos, |
| 771 | 4006 Charcount max_pos) |
| 428 | 4007 { |
| 4008 /* This function has been Mule-ized. */ | |
| 4009 Charcount end; | |
| 867 | 4010 const Ibyte *cur_pos = str; |
| 428 | 4011 struct display_block *db = data->db; |
| 4012 | |
| 4013 data->blank_width = space_width (XWINDOW (data->window)); | |
| 4014 while (Dynarr_length (db->runes) < pos) | |
| 4015 add_blank_rune (data, NULL, 0); | |
| 4016 | |
| 4017 end = (Dynarr_length (db->runes) + | |
| 4187 | 4018 bytecount_to_charcount (str, strlen ((const char *) str))); |
| 428 | 4019 if (max_pos != -1) |
| 4020 end = min (max_pos, end); | |
| 4021 | |
| 4022 while (pos < end && *cur_pos) | |
| 4023 { | |
| 867 | 4024 const Ibyte *old_cur_pos = cur_pos; |
| 428 | 4025 int succeeded; |
| 4026 | |
| 867 | 4027 data->ch = itext_ichar (cur_pos); |
| 4028 succeeded = (add_ichar_rune (data) != ADD_FAILED); | |
| 4029 INC_IBYTEPTR (cur_pos); | |
| 428 | 4030 if (succeeded) |
| 4187 | 4031 { |
| 4032 pos++; | |
| 4033 data->modeline_charpos++; | |
| 4034 data->bytepos += cur_pos - old_cur_pos; | |
| 4035 } | |
| 428 | 4036 } |
| 4037 | |
| 4038 while (Dynarr_length (db->runes) < min_pos && | |
| 4187 | 4039 (data->pixpos + data->blank_width <= data->max_pixpos)) |
| 428 | 4040 add_blank_rune (data, NULL, 0); |
| 4041 | |
| 4042 return Dynarr_length (db->runes); | |
| 4043 } | |
| 4044 | |
| 4045 /* #### Urk! Should also handle begin-glyphs and end-glyphs in | |
| 4046 modeline extents. */ | |
| 4047 static Charcount | |
| 4048 add_glyph_to_fstring_db_runes (pos_data *data, Lisp_Object glyph, | |
| 4187 | 4049 Charcount pos, Charcount UNUSED (min_pos), |
| 438 | 4050 Charcount max_pos, Lisp_Object extent) |
| 428 | 4051 { |
| 4052 /* This function has been Mule-ized. */ | |
| 4053 Charcount end; | |
| 4054 struct display_block *db = data->db; | |
| 4055 struct glyph_block gb; | |
| 4056 | |
| 4057 data->blank_width = space_width (XWINDOW (data->window)); | |
| 4058 while (Dynarr_length (db->runes) < pos) | |
| 4059 add_blank_rune (data, NULL, 0); | |
| 4060 | |
| 4061 end = Dynarr_length (db->runes) + 1; | |
| 4062 if (max_pos != -1) | |
| 4063 end = min (max_pos, end); | |
| 4064 | |
| 4065 gb.glyph = glyph; | |
| 438 | 4066 gb.extent = extent; |
| 428 | 4067 add_glyph_rune (data, &gb, BEGIN_GLYPHS, 0, 0); |
| 4068 pos++; | |
| 4069 | |
| 4070 while (Dynarr_length (db->runes) < pos && | |
| 4187 | 4071 (data->pixpos + data->blank_width <= data->max_pixpos)) |
| 428 | 4072 add_blank_rune (data, NULL, 0); |
| 4073 | |
| 4074 return Dynarr_length (db->runes); | |
| 4075 } | |
| 4076 | |
| 4077 /* If max_pos is == -1, it is considered to be infinite. The same is | |
| 4078 true of max_pixsize. */ | |
| 4079 #define SET_CURRENT_MODE_CHARS_PIXSIZE \ | |
| 4080 if (Dynarr_length (data->db->runes)) \ | |
| 4081 cur_pixsize = data->pixpos - Dynarr_atp (data->db->runes, 0)->xpos; \ | |
| 4082 else \ | |
| 4083 cur_pixsize = 0; | |
| 4084 | |
| 4085 /* Note that this function does "positions" in terms of characters and | |
| 4086 not in terms of columns. This is necessary to make the formatting | |
| 4087 work correctly when proportional width fonts are used in the | |
| 4088 modeline. */ | |
| 4089 static Charcount | |
| 4090 generate_fstring_runes (struct window *w, pos_data *data, Charcount pos, | |
| 4187 | 4091 Charcount min_pos, Charcount max_pos, |
| 4092 Lisp_Object elt, int depth, int max_pixsize, | |
| 4093 face_index findex, int type, Charcount *offset, | |
| 438 | 4094 Lisp_Object cur_ext) |
| 428 | 4095 { |
| 4096 /* This function has been Mule-ized. */ | |
| 4097 /* #### The other losing things in this function are: | |
| 4098 | |
| 4099 -- C zero-terminated-string lossage. | |
| 4100 -- Non-printable characters should be converted into something | |
| 4187 | 4101 appropriate (e.g. ^F) instead of blindly being printed anyway. |
| 428 | 4102 */ |
| 4103 | |
| 4104 tail_recurse: | |
| 4105 if (depth > 10) | |
| 4106 goto invalid; | |
| 4107 | |
| 4108 depth++; | |
| 4109 | |
| 4110 if (STRINGP (elt)) | |
| 4111 { | |
| 4112 /* A string. Add to the display line and check for %-constructs | |
| 4187 | 4113 within it. */ |
| 428 | 4114 |
| 2552 | 4115 Ibyte *this_str = XSTRING_DATA (elt); |
| 4116 | |
| 4117 while ((pos < max_pos || max_pos == -1) && *this_str) | |
| 4187 | 4118 { |
| 4119 Ibyte *last = this_str; | |
| 4120 | |
| 4121 while (*this_str && *this_str != '%') | |
| 4122 this_str++; | |
| 4123 | |
| 4124 if (this_str != last) | |
| 4125 { | |
| 4126 /* No %-construct */ | |
| 4127 Charcount size = | |
| 2552 | 4128 bytecount_to_charcount (last, this_str - last); |
| 438 | 4129 |
| 4130 if (size <= *offset) | |
| 4131 *offset -= size; | |
| 4132 else | |
| 4133 { | |
| 4134 Charcount tmp_max = (max_pos == -1 ? pos + size - *offset : | |
| 4135 min (pos + size - *offset, max_pos)); | |
| 867 | 4136 const Ibyte *tmp_last = itext_n_addr (last, *offset); |
| 438 | 4137 |
| 4138 pos = add_string_to_fstring_db_runes (data, tmp_last, | |
| 4139 pos, pos, tmp_max); | |
| 4140 *offset = 0; | |
| 4141 } | |
| 4187 | 4142 } |
| 4143 else /* *this_str == '%' */ | |
| 4144 { | |
| 4145 Charcount spec_width = 0; | |
| 4146 | |
| 4147 this_str++; /* skip over '%' */ | |
| 4148 | |
| 4149 /* We can't allow -ve args due to the "%-" construct. | |
| 4150 * Argument specifies minwidth but not maxwidth | |
| 4151 * (maxwidth can be specified by | |
| 4152 * (<negative-number> . <stuff>) modeline elements) | |
| 4153 */ | |
| 4154 while (isdigit (*this_str)) | |
| 4155 { | |
| 4156 spec_width = spec_width * 10 + (*this_str - '0'); | |
| 4157 this_str++; | |
| 4158 } | |
| 4159 spec_width += pos; | |
| 4160 | |
| 4161 if (*this_str == 'M') | |
| 4162 { | |
| 4163 pos = generate_fstring_runes (w, data, pos, spec_width, | |
| 4164 max_pos, Vglobal_mode_string, | |
| 4165 depth, max_pixsize, findex, | |
| 4166 type, offset, cur_ext); | |
| 4167 } | |
| 4168 else if (*this_str == '-') | |
| 4169 { | |
| 4170 Charcount num_to_add; | |
| 4171 | |
| 4172 if (max_pixsize < 0) | |
| 4173 num_to_add = 0; | |
| 4174 else if (max_pos != -1) | |
| 4175 num_to_add = max_pos - pos; | |
| 4176 else | |
| 4177 { | |
| 4178 int cur_pixsize; | |
| 4179 int dash_pixsize; | |
| 4180 Ibyte ch = '-'; | |
| 4181 SET_CURRENT_MODE_CHARS_PIXSIZE; | |
| 4182 | |
| 4183 dash_pixsize = | |
|
4815
6540302eedf5
Fix query_string_geometry lookup domain
Didier Verna <didier@lrde.epita.fr>
parents:
4528
diff
changeset
|
4184 redisplay_window_text_width_string |
|
6540302eedf5
Fix query_string_geometry lookup domain
Didier Verna <didier@lrde.epita.fr>
parents:
4528
diff
changeset
|
4185 (w, findex, &ch, Qnil, 0, 1); |
| 4187 | 4186 |
| 4187 if (dash_pixsize == 0) | |
| 3094 | 4188 num_to_add = 0; |
| 4189 else { | |
| 4190 num_to_add = (max_pixsize - cur_pixsize) / dash_pixsize; | |
| 4191 num_to_add++; | |
| 4192 } | |
| 4187 | 4193 } |
| 4194 | |
| 4195 while (num_to_add--) | |
| 4196 pos = add_string_to_fstring_db_runes | |
| 4197 (data, (const Ibyte *) "-", pos, pos, max_pos); | |
| 4198 } | |
| 4199 else if (*this_str != 0) | |
| 4200 { | |
| 4201 Ichar ch = itext_ichar (this_str); | |
| 4202 Ibyte *str; | |
| 438 | 4203 Charcount size; |
| 4204 | |
| 4187 | 4205 decode_mode_spec (w, ch, type); |
| 4206 | |
| 4207 str = Dynarr_atp (mode_spec_ibyte_string, 0); | |
| 438 | 4208 size = bytecount_to_charcount |
| 4209 /* Skip the null character added by `decode_mode_spec' */ | |
| 867 | 4210 (str, Dynarr_length (mode_spec_ibyte_string)) - 1; |
| 438 | 4211 |
| 4212 if (size <= *offset) | |
| 4213 *offset -= size; | |
| 4214 else | |
| 4215 { | |
| 867 | 4216 const Ibyte *tmp_str = itext_n_addr (str, *offset); |
| 438 | 4217 |
| 440 | 4218 /* #### NOTE: I don't understand why a tmp_max is not |
| 438 | 4219 computed and used here as in the plain string case |
| 4220 above. -- dv */ | |
| 4221 pos = add_string_to_fstring_db_runes (data, tmp_str, | |
| 4222 pos, pos, | |
| 4223 max_pos); | |
| 4224 *offset = 0; | |
| 4225 } | |
| 4187 | 4226 } |
| 4227 | |
| 4228 /* NOT this_str++. There could be any sort of character at | |
| 4229 the current position. */ | |
| 4230 INC_IBYTEPTR (this_str); | |
| 4231 } | |
| 4232 | |
| 4233 if (max_pixsize > 0) | |
| 4234 { | |
| 4235 int cur_pixsize; | |
| 4236 SET_CURRENT_MODE_CHARS_PIXSIZE; | |
| 4237 | |
| 4238 if (cur_pixsize >= max_pixsize) | |
| 4239 break; | |
| 4240 } | |
| 4241 } | |
| 428 | 4242 } |
| 4243 else if (SYMBOLP (elt)) | |
| 4244 { | |
| 4245 /* A symbol: process the value of the symbol recursively | |
| 4187 | 4246 as if it appeared here directly. */ |
| 428 | 4247 Lisp_Object tem = symbol_value_in_buffer (elt, w->buffer); |
| 4248 | |
| 4249 if (!UNBOUNDP (tem)) | |
| 4187 | 4250 { |
| 438 | 4251 /* If value is a string, output that string literally: |
| 4187 | 4252 don't check for % within it. */ |
| 4253 if (STRINGP (tem)) | |
| 4254 { | |
| 867 | 4255 Ibyte *str = XSTRING_DATA (tem); |
| 826 | 4256 Charcount size = string_char_length (tem); |
| 438 | 4257 |
| 4258 if (size <= *offset) | |
| 4259 *offset -= size; | |
| 4260 else | |
| 4261 { | |
| 867 | 4262 const Ibyte *tmp_str = itext_n_addr (str, *offset); |
| 438 | 4263 |
| 440 | 4264 /* #### NOTE: I don't understand why a tmp_max is not |
| 438 | 4265 computed and used here as in the plain string case |
| 4266 above. -- dv */ | |
| 4267 pos = add_string_to_fstring_db_runes (data, tmp_str, pos, | |
| 4268 min_pos, max_pos); | |
| 4269 *offset = 0; | |
| 4270 } | |
| 4187 | 4271 } |
| 4272 /* Give up right away for nil or t. */ | |
| 4273 else if (!EQ (tem, elt)) | |
| 4274 { | |
| 4275 elt = tem; | |
| 4276 goto tail_recurse; | |
| 4277 } | |
| 4278 } | |
| 428 | 4279 } |
| 4280 else if (GENERIC_SPECIFIERP (elt)) | |
| 4281 { | |
| 4282 Lisp_Object window, tem; | |
| 793 | 4283 window = wrap_window (w); |
| 428 | 4284 tem = specifier_instance_no_quit (elt, Qunbound, window, |
| 793 | 4285 ERROR_ME_DEBUG_WARN, 0, Qzero); |
| 428 | 4286 if (!UNBOUNDP (tem)) |
| 4287 { | |
| 4288 elt = tem; | |
| 4289 goto tail_recurse; | |
| 4290 } | |
| 4291 } | |
| 4292 else if (CONSP (elt)) | |
| 4293 { | |
| 4294 /* A cons cell: four distinct cases. | |
| 438 | 4295 * - If first element is a string or a cons, process all the elements |
| 4296 * and effectively concatenate them. | |
| 4297 * - If first element is a negative number, truncate displaying cdr to | |
| 4298 * at most that many characters. If positive, pad (with spaces) | |
| 4299 * to at least that many characters. | |
| 771 | 4300 * - If first element is another symbol or a boolean specifier, process |
| 4301 * the cadr or caddr recursively according to whether the symbol's | |
| 4302 * value or specifier's instance is non-nil or nil. | |
| 4303 * - If first element is , process the cadr or caddr | |
| 4304 * recursively according to whether the instance of the specifier in | |
| 4305 * the modeline's window is non-nil or nil. | |
| 442 | 4306 * - If first element is an extent, process the cdr recursively |
| 4307 * and handle the extent's face. | |
| 428 | 4308 */ |
| 438 | 4309 |
| 428 | 4310 Lisp_Object car, tem; |
| 4311 | |
| 4312 car = XCAR (elt); | |
| 771 | 4313 if (SYMBOLP (car) || BOOLEAN_SPECIFIERP (car)) |
| 438 | 4314 { |
| 4315 elt = XCDR (elt); | |
| 4316 if (!CONSP (elt)) | |
| 4317 goto invalid; | |
| 4318 | |
| 771 | 4319 if (SYMBOLP (car)) |
| 4320 tem = symbol_value_in_buffer (car, w->buffer); | |
| 4321 else | |
| 4322 tem = specifier_instance_no_quit (car, Qunbound, wrap_window (w), | |
| 793 | 4323 ERROR_ME_DEBUG_WARN, 0, Qzero); |
| 438 | 4324 /* elt is now the cdr, and we know it is a cons cell. |
| 4325 Use its car if CAR has a non-nil value. */ | |
| 771 | 4326 if (!UNBOUNDP (tem) && !NILP (tem)) |
| 438 | 4327 { |
| 771 | 4328 elt = XCAR (elt); |
| 4329 goto tail_recurse; | |
| 438 | 4330 } |
| 771 | 4331 /* Symbol's value or specifier's instance is nil or unbound |
| 438 | 4332 * Get the cddr of the original list |
| 4333 * and if possible find the caddr and use that. | |
| 4334 */ | |
| 4335 elt = XCDR (elt); | |
| 4336 if (NILP (elt)) | |
| 4337 ; | |
| 4338 else if (!CONSP (elt)) | |
| 4339 goto invalid; | |
| 4340 else | |
| 4341 { | |
| 4342 elt = XCAR (elt); | |
| 4343 goto tail_recurse; | |
| 4344 } | |
| 4345 } | |
| 428 | 4346 else if (INTP (car)) |
| 4187 | 4347 { |
| 4348 Charcount lim = XINT (car); | |
| 4349 | |
| 4350 elt = XCDR (elt); | |
| 4351 | |
| 4352 if (lim < 0) | |
| 4353 { | |
| 4354 /* Negative int means reduce maximum width. | |
| 4355 * DO NOT change MIN_PIXPOS here! | |
| 4356 * (20 -10 . foo) should truncate foo to 10 col | |
| 4357 * and then pad to 20. | |
| 4358 */ | |
| 4359 if (max_pos == -1) | |
| 4360 max_pos = pos - lim; | |
| 4361 else | |
| 4362 max_pos = min (max_pos, pos - lim); | |
| 4363 } | |
| 4364 else if (lim > 0) | |
| 4365 { | |
| 4366 /* Padding specified. Don't let it be more than | |
| 4367 * current maximum. | |
| 4368 */ | |
| 4369 lim += pos; | |
| 4370 if (max_pos != -1 && lim > max_pos) | |
| 4371 lim = max_pos; | |
| 4372 /* If that's more padding than already wanted, queue it. | |
| 4373 * But don't reduce padding already specified even if | |
| 4374 * that is beyond the current truncation point. | |
| 4375 */ | |
| 4376 if (lim > min_pos) | |
| 4377 min_pos = lim; | |
| 4378 } | |
| 4379 goto tail_recurse; | |
| 4380 } | |
| 428 | 4381 else if (STRINGP (car) || CONSP (car)) |
| 4187 | 4382 { |
| 4383 int limit = 50; | |
| 4384 | |
| 4385 /* LIMIT is to protect against circular lists. */ | |
| 4386 while (CONSP (elt) && --limit > 0 | |
| 4387 && (pos < max_pos || max_pos == -1)) | |
| 4388 { | |
| 4389 pos = generate_fstring_runes (w, data, pos, pos, max_pos, | |
| 4390 XCAR (elt), depth, max_pixsize, | |
| 438 | 4391 findex, type, offset, cur_ext); |
| 4187 | 4392 elt = XCDR (elt); |
| 4393 } | |
| 4394 } | |
| 428 | 4395 else if (EXTENTP (car)) |
| 4187 | 4396 { |
| 4397 struct extent *ext = XEXTENT (car); | |
| 4398 | |
| 4399 if (EXTENT_LIVE_P (ext)) | |
| 4400 { | |
| 4401 face_index old_findex = data->findex; | |
| 4402 Lisp_Object face; | |
| 4403 Lisp_Object font_inst; | |
| 4404 face_index new_findex; | |
| 4405 Bytecount start = data->bytepos; | |
| 4406 | |
| 4407 face = extent_face (ext); | |
| 4408 if (FACEP (face)) | |
| 4409 { | |
| 4410 /* #### needs to merge faces, sigh */ | |
| 4411 /* #### needs to handle list of faces */ | |
| 4412 new_findex = get_builtin_face_cache_index (w, face); | |
| 4413 /* !!#### not right; needs to compute the max height of | |
| 4414 all the charsets */ | |
| 4415 font_inst = WINDOW_FACE_CACHEL_FONT (w, new_findex, | |
| 4416 Vcharset_ascii); | |
| 4417 | |
| 4418 data->dl->ascent = max (data->dl->ascent, | |
| 4419 XFONT_INSTANCE (font_inst)->ascent); | |
| 4420 data->dl->descent = max (data->dl->descent, | |
| 4421 XFONT_INSTANCE (font_inst)-> | |
| 4422 descent); | |
| 4423 } | |
| 4424 else | |
| 4425 new_findex = old_findex; | |
| 4426 | |
| 4427 data->findex = new_findex; | |
| 4428 pos = generate_fstring_runes (w, data, pos, pos, max_pos, | |
| 4429 XCDR (elt), depth - 1, | |
| 438 | 4430 max_pixsize, new_findex, type, |
| 4431 offset, car); | |
| 4187 | 4432 data->findex = old_findex; |
| 4433 Dynarr_add (formatted_string_extent_dynarr, ext); | |
| 4434 Dynarr_add (formatted_string_extent_start_dynarr, start); | |
| 4435 Dynarr_add (formatted_string_extent_end_dynarr, data->bytepos); | |
| 4436 } | |
| 4437 } | |
| 428 | 4438 } |
| 4439 else if (GLYPHP (elt)) | |
| 4440 { | |
| 438 | 4441 /* Glyphs are considered as one character with respect to the modeline |
| 4442 horizontal scrolling facility. -- dv */ | |
| 4443 if (*offset > 0) | |
| 4444 *offset -= 1; | |
| 4445 else | |
| 4446 pos = add_glyph_to_fstring_db_runes (data, elt, pos, pos, max_pos, | |
| 4447 cur_ext); | |
| 428 | 4448 } |
| 4449 else | |
| 4450 { | |
| 4451 invalid: | |
| 438 | 4452 { |
|
4528
726060ee587c
First draft of g++ 4.3 warning removal patch. Builds. *Needs ChangeLogs.*
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4522
diff
changeset
|
4453 const char *str = GETTEXT ("*invalid*"); |
| 438 | 4454 Charcount size = (Charcount) strlen (str); /* is this ok ?? -- dv */ |
| 4455 | |
| 4456 if (size <= *offset) | |
| 4457 *offset -= size; | |
| 4458 else | |
| 4459 { | |
| 867 | 4460 const Ibyte *tmp_str = |
| 4461 itext_n_addr ((const Ibyte *) str, *offset); | |
| 438 | 4462 |
| 440 | 4463 /* #### NOTE: I don't understand why a tmp_max is not computed and |
| 438 | 4464 used here as in the plain string case above. -- dv */ |
| 4465 pos = add_string_to_fstring_db_runes (data, tmp_str, pos, | |
| 4466 min_pos, max_pos); | |
| 4467 *offset = 0; | |
| 4468 } | |
| 4469 } | |
| 428 | 4470 } |
| 4471 | |
| 4472 if (min_pos > pos) | |
| 4473 { | |
| 867 | 4474 add_string_to_fstring_db_runes (data, (const Ibyte *) "", pos, |
| 438 | 4475 min_pos, -1); |
| 428 | 4476 } |
| 4477 | |
| 4478 return pos; | |
| 4479 } | |
| 4480 | |
| 4481 /* Update just the modeline. Assumes the desired display structs. If | |
| 4482 they do not have a modeline block, it does nothing. */ | |
| 4483 static void | |
| 4484 regenerate_modeline (struct window *w) | |
| 4485 { | |
| 4486 display_line_dynarr *dla = window_display_lines (w, DESIRED_DISP); | |
| 4487 | |
| 4488 if (!Dynarr_length (dla) || !Dynarr_atp (dla, 0)->modeline) | |
| 4489 return; | |
| 4490 else | |
| 4491 { | |
| 4492 generate_modeline (w, Dynarr_atp (dla, 0), DESIRED_DISP); | |
| 4493 redisplay_update_line (w, 0, 0, 0); | |
| 4494 } | |
| 4495 } | |
| 4496 | |
| 4497 /* Make sure that modeline display line is present in the given | |
| 4498 display structs if the window has a modeline and update that | |
| 4499 line. Returns true if a modeline was needed. */ | |
| 4500 static int | |
| 4501 ensure_modeline_generated (struct window *w, int type) | |
| 4502 { | |
| 4503 int need_modeline; | |
| 4504 | |
| 4505 /* minibuffer windows don't have modelines */ | |
| 4506 if (MINI_WINDOW_P (w)) | |
| 4507 need_modeline = 0; | |
| 4508 /* windows which haven't had it turned off do */ | |
| 4509 else if (WINDOW_HAS_MODELINE_P (w)) | |
| 4510 need_modeline = 1; | |
| 4511 /* windows which have it turned off don't have a divider if there is | |
| 4512 a horizontal scrollbar */ | |
| 4513 else if (window_scrollbar_height (w)) | |
| 4514 need_modeline = 0; | |
| 4515 /* and in this case there is none */ | |
| 4516 else | |
| 4517 need_modeline = 1; | |
| 4518 | |
| 4519 if (need_modeline) | |
| 4520 { | |
| 4521 display_line_dynarr *dla; | |
| 4522 | |
| 4523 dla = window_display_lines (w, type); | |
| 4524 | |
| 4525 /* We don't care if there is a display line which is not | |
| 4187 | 4526 currently a modeline because it is definitely going to become |
| 4527 one if we have gotten to this point. */ | |
| 428 | 4528 if (Dynarr_length (dla) == 0) |
| 4529 { | |
| 4530 if (Dynarr_largest (dla) > 0) | |
| 800 | 4531 Dynarr_increment (dla); |
| 428 | 4532 else |
| 4533 { | |
| 4534 struct display_line modeline; | |
| 4207 | 4535 |
| 4536 DISPLAY_LINE_INIT (modeline); | |
| 428 | 4537 Dynarr_add (dla, modeline); |
| 4538 } | |
| 4539 } | |
| 4540 | |
| 4541 /* If we're adding a new place marker go ahead and generate the | |
| 4187 | 4542 modeline so that it is available for use by |
| 4543 window_modeline_height. */ | |
| 428 | 4544 generate_modeline (w, Dynarr_atp (dla, 0), type); |
| 4545 } | |
| 4546 | |
| 4547 return need_modeline; | |
| 4548 } | |
| 4549 | |
| 4550 /* #### Kludge or not a kludge. I tend towards the former. */ | |
| 4551 int | |
| 4552 real_current_modeline_height (struct window *w) | |
| 4553 { | |
| 4554 Fset_marker (w->start[CMOTION_DISP], w->start[CURRENT_DISP], w->buffer); | |
| 4555 Fset_marker (w->pointm[CMOTION_DISP], w->pointm[CURRENT_DISP], w->buffer); | |
| 4556 | |
| 4557 if (ensure_modeline_generated (w, CMOTION_DISP)) | |
| 4558 { | |
| 4559 display_line_dynarr *dla = window_display_lines (w, CMOTION_DISP); | |
| 4560 | |
| 4561 if (Dynarr_length (dla)) | |
| 4562 { | |
| 4563 if (Dynarr_atp (dla, 0)->modeline) | |
| 4564 return (Dynarr_atp (dla, 0)->ascent + | |
| 4565 Dynarr_atp (dla, 0)->descent); | |
| 4566 } | |
| 4567 } | |
| 4568 return 0; | |
| 4569 } | |
| 4570 | |
| 4571 | |
| 4572 /***************************************************************************/ | |
| 819 | 4573 /* */ |
| 826 | 4574 /* displayable string routines */ |
| 819 | 4575 /* */ |
| 428 | 4576 /***************************************************************************/ |
| 4577 | |
| 4578 /* Given a position for a string in a window, ensure that the given | |
| 4579 display line DL accurately represents the text on a line starting | |
| 4580 at the given position. | |
| 4581 | |
| 4582 Yes, this is duplicating the code of create_text_block, but it | |
| 4583 looked just too hard to change create_text_block to handle strings | |
| 4584 *and* buffers. We already make a distinction between the two | |
| 4585 elsewhere in the code so I think unifying them would require a | |
| 4586 complete MULE rewrite. Besides, the other distinction is that these | |
| 4587 functions cover text that the user *cannot edit* so we can remove | |
| 4588 everything to do with cursors, minibuffers etc. Eventually the | |
| 4589 modeline routines should be modified to use this code as it copes | |
| 4590 with many more types of display situation. */ | |
| 4591 | |
| 665 | 4592 static Charbpos |
| 428 | 4593 create_string_text_block (struct window *w, Lisp_Object disp_string, |
| 4594 struct display_line *dl, | |
| 826 | 4595 Charcount start_pos, |
| 428 | 4596 prop_block_dynarr **prop, |
| 4597 face_index default_face) | |
| 4598 { | |
| 4599 struct frame *f = XFRAME (w->frame); | |
| 4600 /* Note that a lot of the buffer controlled stuff has been left in | |
| 4601 because you might well want to make use of it (selective display | |
| 4602 etc), its just the buffer text that we do not use. However, it | |
| 4603 seems to be possible for buffer to be nil sometimes so protect | |
| 4604 against this case. */ | |
| 4605 struct buffer *b = BUFFERP (w->buffer) ? XBUFFER (w->buffer) : 0; | |
| 4606 struct device *d = XDEVICE (f->device); | |
| 4607 | |
| 4608 /* we're working with these a lot so precalculate them */ | |
| 4609 Bytecount slen = XSTRING_LENGTH (disp_string); | |
| 826 | 4610 Bytecount byte_string_zv = slen; |
| 4611 Bytecount byte_start_pos = string_index_char_to_byte (disp_string, start_pos); | |
| 428 | 4612 |
| 4613 pos_data data; | |
| 4614 | |
| 4615 int truncate_win = b ? window_truncation_on (w) : 0; | |
| 4616 | |
| 442 | 4617 /* We're going to ditch selective display for static text, it's an |
| 4618 FSF thing and invisible extents are the way to go here. | |
| 4619 Implementing it also relies on a number of buffer-specific | |
| 428 | 4620 functions that we don't have the luxury of being able to use |
| 4621 here. */ | |
| 4622 | |
| 4623 /* The variable ctl-arrow allows the user to specify what characters | |
| 4624 can actually be displayed and which octal should be used for. | |
| 4625 #### This variable should probably have some rethought done to | |
| 4626 it. | |
| 4627 | |
| 4628 #### It would also be really nice if you could specify that | |
| 4629 the characters come out in hex instead of in octal. Mule | |
| 4630 does that by adding a ctl-hexa variable similar to ctl-arrow, | |
| 4631 but that's bogus -- we need a more general solution. I | |
| 4632 think you need to extend the concept of display tables | |
| 4633 into a more general conversion mechanism. Ideally you | |
| 4634 could specify a Lisp function that converts characters, | |
| 4635 but this violates the Second Golden Rule and besides would | |
| 4636 make things way way way way slow. | |
| 4637 | |
| 4638 So instead, we extend the display-table concept, which was | |
| 4639 historically limited to 256-byte vectors, to one of the | |
| 4640 following: | |
| 4641 | |
| 4642 a) A 256-entry vector, for backward compatibility; | |
| 4643 b) char-table, mapping characters to values; | |
| 4644 c) range-table, mapping ranges of characters to values; | |
| 4645 d) a list of the above. | |
| 4646 | |
| 4647 The (d) option allows you to specify multiple display tables | |
| 4648 instead of just one. Each display table can specify conversions | |
| 4649 for some characters and leave others unchanged. The way the | |
| 4650 character gets displayed is determined by the first display table | |
| 4651 with a binding for that character. This way, you could call a | |
| 4652 function `enable-hex-display' that adds a hex display-table to | |
| 4653 the list of display tables for the current buffer. | |
| 4654 | |
| 4655 #### ...not yet implemented... Also, we extend the concept of | |
| 4656 "mapping" to include a printf-like spec. Thus you can make all | |
| 4657 extended characters show up as hex with a display table like | |
| 4658 this: | |
| 4659 | |
| 4187 | 4660 #s(range-table data ((256 524288) (format "%x"))) |
| 428 | 4661 |
| 4662 Since more than one display table is possible, you have | |
| 4663 great flexibility in mapping ranges of characters. */ | |
| 867 | 4664 Ichar printable_min = b ? (CHAR_OR_CHAR_INTP (b->ctl_arrow) |
| 428 | 4665 ? XCHAR_OR_CHAR_INT (b->ctl_arrow) |
| 4666 : ((EQ (b->ctl_arrow, Qt) || EQ (b->ctl_arrow, Qnil)) | |
| 4667 ? 255 : 160)) : 255; | |
| 4668 | |
| 4669 Lisp_Object face_dt, window_dt; | |
| 4670 | |
| 4671 /* The text display block for this display line. */ | |
| 4672 struct display_block *db = get_display_block_from_line (dl, TEXT); | |
| 4673 | |
| 4674 /* The first time through the main loop we need to force the glyph | |
| 4675 data to be updated. */ | |
| 4676 int initial = 1; | |
| 4677 | |
| 4678 /* Apparently the new extent_fragment_update returns an end position | |
| 4679 equal to the position passed in if there are no more runs to be | |
| 4680 displayed. */ | |
| 4681 int no_more_frags = 0; | |
| 4682 | |
| 4683 dl->used_prop_data = 0; | |
| 4684 dl->num_chars = 0; | |
| 442 | 4685 dl->line_continuation = 0; |
| 428 | 4686 |
| 4187 | 4687 /* Set up faces to use for clearing areas, used by output_display_line. */ |
| 428 | 4688 dl->default_findex = default_face; |
| 4187 | 4689 if (default_face > DEFAULT_INDEX) |
| 428 | 4690 { |
| 4691 dl->left_margin_findex = default_face; | |
| 4692 dl->right_margin_findex = default_face; | |
| 4693 } | |
| 4694 else | |
| 4695 { | |
| 434 | 4696 dl->left_margin_findex = |
| 428 | 4697 get_builtin_face_cache_index (w, Vleft_margin_face); |
| 434 | 4698 dl->right_margin_findex = |
| 428 | 4699 get_builtin_face_cache_index (w, Vright_margin_face); |
| 4700 } | |
| 4701 | |
| 4702 xzero (data); | |
| 4703 data.ef = extent_fragment_new (disp_string, f); | |
| 4704 | |
| 4705 /* These values are used by all of the rune addition routines. We add | |
| 4706 them to this structure for ease of passing. */ | |
| 4707 data.d = d; | |
| 793 | 4708 data.window = wrap_window (w); |
| 428 | 4709 data.db = db; |
| 4710 data.dl = dl; | |
| 4711 | |
| 826 | 4712 data.byte_charpos = byte_start_pos; |
| 428 | 4713 data.pixpos = dl->bounds.left_in; |
| 4714 data.last_charset = Qunbound; | |
| 4715 data.last_findex = default_face; | |
| 4716 data.result_str = Qnil; | |
| 4717 data.string = disp_string; | |
| 4718 | |
| 4719 /* Set the right boundary adjusting it to take into account any end | |
| 4720 glyph. Save the width of the end glyph for later use. */ | |
| 4721 data.max_pixpos = dl->bounds.right_in; | |
| 819 | 4722 data.max_pixpos -= data.end_glyph_width; |
| 428 | 4723 |
| 4724 data.cursor_type = NO_CURSOR; | |
| 4725 data.cursor_x = -1; | |
| 4726 | |
| 4727 data.start_col = 0; | |
| 4728 /* I don't think we want this, string areas should not scroll with | |
| 434 | 4729 the window |
| 428 | 4730 data.start_col = w->hscroll; |
| 826 | 4731 data.byte_start_col_enabled = (w->hscroll ? byte_start_pos : 0); |
| 428 | 4732 */ |
| 826 | 4733 data.byte_start_col_enabled = 0; |
| 428 | 4734 data.hscroll_glyph_width_adjust = 0; |
| 4735 | |
| 4736 /* We regenerate the line from the very beginning. */ | |
| 4737 Dynarr_reset (db->runes); | |
| 4738 | |
| 4739 /* Why is this less than or equal and not just less than? If the | |
| 4740 starting position is already equal to the maximum we can't add | |
| 4741 anything else, right? Wrong. We might still have a newline to | |
| 4742 add. A newline can use the room allocated for an end glyph since | |
| 4743 if we add it we know we aren't going to be adding any end | |
| 4744 glyph. */ | |
| 4745 | |
| 4746 /* #### Chuck -- I think this condition should be while (1). | |
| 4747 Otherwise if (e.g.) there is one begin-glyph and one end-glyph | |
| 4748 and the begin-glyph ends exactly at the end of the window, the | |
| 4749 end-glyph and text might not be displayed. while (1) ensures | |
| 4750 that the loop terminates only when either (a) there is | |
| 4751 propagation data or (b) the end-of-line or end-of-buffer is hit. | |
| 4752 | |
| 4753 #### Also I think you need to ensure that the operation | |
| 4754 "add begin glyphs; add end glyphs; add text" is atomic and | |
| 4755 can't get interrupted in the middle. If you run off the end | |
| 4756 of the line during that operation, then you keep accumulating | |
| 4757 propagation data until you're done. Otherwise, if the (e.g.) | |
| 4758 there's a begin glyph at a particular position and attempting | |
| 4759 to display that glyph results in window-end being hit and | |
| 4760 propagation data being generated, then the character at that | |
| 4761 position won't be displayed. | |
| 4762 | |
| 4763 #### See also the comment after the end of this loop, below. | |
| 4764 */ | |
| 4765 while (data.pixpos <= data.max_pixpos) | |
| 4766 { | |
| 4767 /* #### This check probably should not be necessary. */ | |
| 826 | 4768 if (data.byte_charpos > byte_string_zv) |
| 428 | 4769 { |
| 4770 /* #### urk! More of this lossage! */ | |
| 826 | 4771 data.byte_charpos--; |
| 428 | 4772 goto done; |
| 4773 } | |
| 4774 | |
| 4775 /* Check for face changes. */ | |
| 826 | 4776 if (initial || (!no_more_frags && data.byte_charpos == data.ef->end)) |
| 428 | 4777 { |
| 819 | 4778 Lisp_Object last_glyph = Qnil; |
| 4779 /* Deal with clipped glyphs that we have already displayed. */ | |
| 4187 | 4780 if (*prop && Dynarr_atp (*prop, 0)->type == PROP_GLYPH) |
| 819 | 4781 { |
| 4782 last_glyph = Dynarr_atp (*prop, 0)->data.p_glyph.glyph; | |
| 4783 Dynarr_free (*prop); | |
| 4784 *prop = 0; | |
| 4785 } | |
| 428 | 4786 /* Now compute the face and begin/end-glyph information. */ |
| 4787 data.findex = | |
| 793 | 4788 /* Remember that the extent-fragment routines deal in |
| 4187 | 4789 Bytexpos's. */ |
| 826 | 4790 extent_fragment_update (w, data.ef, data.byte_charpos, last_glyph); |
| 428 | 4791 /* This is somewhat cheesy but the alternative is to |
| 4187 | 4792 propagate default_face into extent_fragment_update. */ |
| 428 | 4793 if (data.findex == DEFAULT_INDEX) |
| 4794 data.findex = default_face; | |
| 4795 | |
| 4796 get_display_tables (w, data.findex, &face_dt, &window_dt); | |
| 4797 | |
| 826 | 4798 if (data.byte_charpos == data.ef->end) |
| 428 | 4799 no_more_frags = 1; |
| 4800 } | |
| 4801 initial = 0; | |
| 4802 | |
| 4803 /* Determine what is next to be displayed. We first handle any | |
| 4187 | 4804 glyphs returned by glyphs_at_charbpos. If there are no glyphs to |
| 4805 display then we determine what to do based on the character at the | |
| 4806 current buffer position. */ | |
| 428 | 4807 |
| 4808 /* If the current position is covered by an invisible extent, do | |
| 4187 | 4809 nothing (except maybe add some ellipses). |
| 428 | 4810 |
| 4811 #### The behavior of begin and end-glyphs at the edge of an | |
| 4812 invisible extent should be investigated further. This is | |
| 4813 fairly low priority though. */ | |
| 4814 if (data.ef->invisible) | |
| 4815 { | |
| 4816 /* #### Chuck, perhaps you could look at this code? I don't | |
| 4817 really know what I'm doing. */ | |
| 4818 if (*prop) | |
| 4819 { | |
| 4820 Dynarr_free (*prop); | |
| 4821 *prop = 0; | |
| 4822 } | |
| 4823 | |
| 4824 /* The extent fragment code only sets this when we should | |
| 4825 really display the ellipses. It makes sure the ellipses | |
| 4826 don't get displayed more than once in a row. */ | |
| 4827 if (data.ef->invisible_ellipses) | |
| 4828 { | |
| 4829 struct glyph_block gb; | |
| 4830 | |
| 4831 data.ef->invisible_ellipses_already_displayed = 1; | |
| 4832 data.ef->invisible_ellipses = 0; | |
| 4833 gb.extent = Qnil; | |
| 4834 gb.glyph = Vinvisible_text_glyph; | |
| 4835 *prop = add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0, | |
| 4836 GLYPH_CACHEL (w, INVIS_GLYPH_INDEX)); | |
| 4837 /* Perhaps they shouldn't propagate if the very next thing | |
| 4838 is to display a newline (for compatibility with | |
| 4839 selective-display-ellipses)? Maybe that's too | |
| 4840 abstruse. */ | |
| 4841 if (*prop) | |
| 4842 goto done; | |
| 4843 } | |
| 4844 | |
| 638 | 4845 /* #### What if we're dealing with a display table? */ |
| 428 | 4846 if (data.start_col) |
| 4847 data.start_col--; | |
| 4848 | |
| 826 | 4849 if (data.byte_charpos == byte_string_zv) |
| 428 | 4850 goto done; |
| 4851 else | |
| 826 | 4852 INC_BYTECOUNT (XSTRING_DATA (disp_string), data.byte_charpos); |
| 428 | 4853 } |
| 4854 | |
| 4855 /* If there is propagation data, then it represents the current | |
| 4187 | 4856 buffer position being displayed. Add them and advance the |
| 4857 position counter. This might also add the minibuffer | |
| 4858 prompt. */ | |
| 428 | 4859 else if (*prop) |
| 4860 { | |
| 4861 dl->used_prop_data = 1; | |
| 4862 *prop = add_propagation_runes (prop, &data); | |
| 4863 | |
| 4864 if (*prop) | |
| 4865 goto done; /* gee, a really narrow window */ | |
| 826 | 4866 else if (data.byte_charpos == byte_string_zv) |
| 428 | 4867 goto done; |
| 826 | 4868 else if (data.byte_charpos < 0) |
| 428 | 4869 /* #### urk urk urk! Aborts are not very fun! Fix this please! */ |
| 826 | 4870 data.byte_charpos = 0; |
| 428 | 4871 else |
| 826 | 4872 INC_BYTECOUNT (XSTRING_DATA (disp_string), data.byte_charpos); |
| 428 | 4873 } |
| 4874 | |
| 4875 /* If there are end glyphs, add them to the line. These are | |
| 4876 the end glyphs for the previous run of text. We add them | |
| 4877 here rather than doing them at the end of handling the | |
| 4878 previous run so that glyphs at the beginning and end of | |
| 4879 a line are handled correctly. */ | |
| 4880 else if (Dynarr_length (data.ef->end_glyphs) > 0) | |
| 4881 { | |
| 867 | 4882 data.ch = string_ichar (disp_string, data.byte_charpos); |
| 428 | 4883 *prop = add_glyph_runes (&data, END_GLYPHS); |
| 819 | 4884 |
| 4885 if (*prop) { | |
| 428 | 4886 goto done; |
| 819 | 4887 } |
| 428 | 4888 } |
| 4889 | |
| 4890 /* If there are begin glyphs, add them to the line. */ | |
| 4891 else if (Dynarr_length (data.ef->begin_glyphs) > 0) | |
| 4892 { | |
| 867 | 4893 data.ch = string_ichar (disp_string, data.byte_charpos); |
| 428 | 4894 *prop = add_glyph_runes (&data, BEGIN_GLYPHS); |
| 819 | 4895 |
| 4896 if (*prop) { | |
| 428 | 4897 goto done; |
| 819 | 4898 } |
| 428 | 4899 } |
| 4900 | |
| 4901 /* If at end-of-buffer, we've already processed begin and | |
| 4902 end-glyphs at this point and there's no text to process, | |
| 4903 so we're done. */ | |
| 826 | 4904 else if (data.byte_charpos == byte_string_zv) |
| 428 | 4905 goto done; |
| 4906 | |
| 4907 else | |
| 4908 { | |
| 4909 Lisp_Object entry = Qnil; | |
| 4910 /* Get the character at the current buffer position. */ | |
| 867 | 4911 data.ch = string_ichar (disp_string, data.byte_charpos); |
| 428 | 4912 if (!NILP (face_dt) || !NILP (window_dt)) |
| 4913 entry = display_table_entry (data.ch, face_dt, window_dt); | |
| 4914 | |
| 4915 /* If there is a display table entry for it, hand it off to | |
| 4187 | 4916 add_disp_table_entry_runes and let it worry about it. */ |
| 428 | 4917 if (!NILP (entry) && !EQ (entry, make_char (data.ch))) |
| 4918 { | |
| 4919 *prop = add_disp_table_entry_runes (&data, entry); | |
| 4920 | |
| 4921 if (*prop) | |
| 4922 goto done; | |
| 4923 } | |
| 4924 | |
| 4925 /* Check if we have hit a newline character. If so, add a marker | |
| 4187 | 4926 to the line and end this loop. */ |
| 428 | 4927 else if (data.ch == '\n') |
| 4928 { | |
| 4929 /* We aren't going to be adding an end glyph so give its | |
| 4187 | 4930 space back in order to make sure that the cursor can |
| 4931 fit. */ | |
| 819 | 4932 data.max_pixpos += data.end_glyph_width; |
| 428 | 4933 goto done; |
| 4934 } | |
| 4935 | |
| 4936 /* If the current character is considered to be printable, then | |
| 4187 | 4937 just add it. */ |
| 428 | 4938 else if (data.ch >= printable_min) |
| 4939 { | |
| 867 | 4940 *prop = add_ichar_rune (&data); |
| 428 | 4941 if (*prop) |
| 4942 goto done; | |
| 4943 } | |
| 4944 | |
| 4945 /* If the current character is a tab, determine the next tab | |
| 4187 | 4946 starting position and add a blank rune which extends from the |
| 4947 current pixel position to that starting position. */ | |
| 428 | 4948 else if (data.ch == '\t') |
| 4949 { | |
| 4950 int tab_start_pixpos = data.pixpos; | |
| 4951 int next_tab_start; | |
| 4952 int char_tab_width; | |
| 4953 int prop_width = 0; | |
| 4954 | |
| 4955 if (data.start_col > 1) | |
| 4956 tab_start_pixpos -= (space_width (w) * (data.start_col - 1)); | |
| 4957 | |
| 4958 next_tab_start = | |
| 4959 next_tab_position (w, tab_start_pixpos, | |
| 4960 dl->bounds.left_in + | |
| 4961 data.hscroll_glyph_width_adjust); | |
| 4962 if (next_tab_start > data.max_pixpos) | |
| 4963 { | |
| 4964 prop_width = next_tab_start - data.max_pixpos; | |
| 4965 next_tab_start = data.max_pixpos; | |
| 4966 } | |
| 4967 data.blank_width = next_tab_start - data.pixpos; | |
| 4968 char_tab_width = | |
| 4969 (next_tab_start - tab_start_pixpos) / space_width (w); | |
| 4970 | |
| 4971 *prop = add_blank_rune (&data, w, char_tab_width); | |
| 4972 | |
| 4973 /* add_blank_rune is only supposed to be called with | |
| 819 | 4974 sizes guaranteed to fit in the available space. */ |
| 428 | 4975 assert (!(*prop)); |
| 4976 | |
| 4977 if (prop_width) | |
| 4978 { | |
| 4979 struct prop_block pb; | |
| 4980 *prop = Dynarr_new (prop_block); | |
| 4981 | |
| 4982 pb.type = PROP_BLANK; | |
| 4983 pb.data.p_blank.width = prop_width; | |
| 4984 pb.data.p_blank.findex = data.findex; | |
| 4985 Dynarr_add (*prop, pb); | |
| 4986 | |
| 4987 goto done; | |
| 4988 } | |
| 4989 } | |
| 4990 | |
| 4991 /* If character is a control character, pass it off to | |
| 4187 | 4992 add_control_char_runes. |
| 428 | 4993 |
| 4994 The is_*() routines have undefined results on | |
| 4995 arguments outside of the range [-1, 255]. (This | |
| 4996 often bites people who carelessly use `char' instead | |
| 4997 of `unsigned char'.) | |
| 4998 */ | |
| 867 | 4999 else if (data.ch < 0x100 && iscntrl ((Ibyte) data.ch)) |
| 428 | 5000 { |
| 5001 *prop = add_control_char_runes (&data, b); | |
| 5002 | |
| 5003 if (*prop) | |
| 5004 goto done; | |
| 5005 } | |
| 5006 | |
| 5007 /* If the character is above the ASCII range and we have not | |
| 4187 | 5008 already handled it, then print it as an octal number. */ |
| 428 | 5009 else if (data.ch >= 0200) |
| 5010 { | |
| 5011 *prop = add_octal_runes (&data); | |
| 5012 | |
| 5013 if (*prop) | |
| 5014 goto done; | |
| 5015 } | |
| 5016 | |
| 5017 /* Assume the current character is considered to be printable, | |
| 4187 | 5018 then just add it. */ |
| 428 | 5019 else |
| 5020 { | |
| 867 | 5021 *prop = add_ichar_rune (&data); |
| 428 | 5022 if (*prop) |
| 5023 goto done; | |
| 5024 } | |
| 5025 | |
| 826 | 5026 INC_BYTECOUNT (XSTRING_DATA (disp_string), data.byte_charpos); |
| 428 | 5027 } |
| 5028 } | |
| 5029 | |
| 819 | 5030 done: |
| 428 | 5031 |
| 5032 /* Determine the starting point of the next line if we did not hit the | |
| 5033 end of the buffer. */ | |
| 826 | 5034 if (data.byte_charpos < byte_string_zv) |
| 428 | 5035 { |
| 5036 /* #### This check is not correct. If the line terminated | |
| 5037 due to a begin-glyph or end-glyph hitting window-end, then | |
| 826 | 5038 data.ch will not point to the character at data.byte_charpos. If |
| 428 | 5039 you make the two changes mentioned at the top of this loop, |
| 5040 you should be able to say '(if (*prop))'. That should also | |
| 826 | 5041 make it possible to eliminate the data.byte_charpos < BYTE_BUF_ZV (b) |
| 428 | 5042 check. */ |
| 5043 | |
| 5044 /* The common case is that the line ended because we hit a newline. | |
| 4187 | 5045 In that case, the next character is just the next buffer |
| 5046 position. */ | |
| 428 | 5047 if (data.ch == '\n') |
| 5048 { | |
| 826 | 5049 INC_BYTECOUNT (XSTRING_DATA (disp_string), data.byte_charpos); |
| 428 | 5050 } |
| 5051 | |
| 5052 /* Otherwise we have a buffer line which cannot fit on one display | |
| 4187 | 5053 line. */ |
| 428 | 5054 else |
| 5055 { | |
| 5056 struct glyph_block gb; | |
| 5057 struct glyph_cachel *cachel; | |
| 5058 | |
| 5059 /* If the line is to be truncated then we actually have to look | |
| 4187 | 5060 for the next newline. We also add the end-of-line glyph which |
| 5061 we know will fit because we adjusted the right border before | |
| 5062 we starting laying out the line. */ | |
| 819 | 5063 data.max_pixpos += data.end_glyph_width; |
| 428 | 5064 data.findex = default_face; |
| 5065 gb.extent = Qnil; | |
| 5066 | |
| 5067 if (truncate_win) | |
| 5068 { | |
| 826 | 5069 Bytecount byte_pos; |
| 428 | 5070 |
| 5071 /* Now find the start of the next line. */ | |
| 867 | 5072 byte_pos = byte_find_next_ichar_in_string (disp_string, '\n', |
| 826 | 5073 data.byte_charpos, 1); |
| 428 | 5074 |
| 5075 data.cursor_type = NO_CURSOR; | |
| 826 | 5076 data.byte_charpos = byte_pos; |
| 428 | 5077 gb.glyph = Vtruncation_glyph; |
| 5078 cachel = GLYPH_CACHEL (w, TRUN_GLYPH_INDEX); | |
| 5079 } | |
| 5080 else | |
| 5081 { | |
| 5082 /* The cursor can never be on the continuation glyph. */ | |
| 5083 data.cursor_type = NO_CURSOR; | |
| 5084 | |
| 826 | 5085 /* data.byte_charpos is already at the start of the next line. */ |
| 428 | 5086 |
| 442 | 5087 dl->line_continuation = 1; |
| 428 | 5088 gb.glyph = Vcontinuation_glyph; |
| 5089 cachel = GLYPH_CACHEL (w, CONT_GLYPH_INDEX); | |
| 5090 } | |
| 5091 | |
| 819 | 5092 if (data.end_glyph_width) |
| 428 | 5093 add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0, cachel); |
| 5094 | |
| 826 | 5095 if (truncate_win && data.byte_charpos == byte_string_zv) |
| 428 | 5096 { |
| 867 | 5097 const Ibyte *endb = itext_n_addr (XSTRING_DATA (disp_string), |
| 826 | 5098 byte_string_zv); |
| 867 | 5099 DEC_IBYTEPTR (endb); |
| 5100 if (itext_ichar (endb) != '\n') | |
| 428 | 5101 { |
| 5102 /* #### Damn this losing shit. */ | |
| 826 | 5103 data.byte_charpos++; |
| 428 | 5104 } |
| 5105 } | |
| 5106 } | |
| 5107 } | |
| 826 | 5108 else if (data.byte_charpos == byte_string_zv) |
| 428 | 5109 { |
| 5110 /* create_text_block () adds a bogus \n marker here which screws | |
| 5111 up subwindow display. Since we never have a cursor in the | |
| 5112 gutter we can safely ignore it. */ | |
| 5113 } | |
| 5114 /* Calculate left whitespace boundary. */ | |
| 5115 { | |
| 5116 int elt = 0; | |
| 5117 | |
| 5118 /* Whitespace past a newline is considered right whitespace. */ | |
| 5119 while (elt < Dynarr_length (db->runes)) | |
| 5120 { | |
| 5121 struct rune *rb = Dynarr_atp (db->runes, elt); | |
| 5122 | |
| 5123 if ((rb->type == RUNE_CHAR && rb->object.chr.ch == ' ') | |
| 5124 || rb->type == RUNE_BLANK) | |
| 5125 { | |
| 5126 dl->bounds.left_white += rb->width; | |
| 5127 elt++; | |
| 5128 } | |
| 5129 else | |
| 5130 elt = Dynarr_length (db->runes); | |
| 5131 } | |
| 5132 } | |
| 5133 | |
| 5134 /* Calculate right whitespace boundary. */ | |
| 5135 { | |
| 5136 int elt = Dynarr_length (db->runes) - 1; | |
| 5137 int done = 0; | |
| 5138 | |
| 5139 while (!done && elt >= 0) | |
| 5140 { | |
| 5141 struct rune *rb = Dynarr_atp (db->runes, elt); | |
| 5142 | |
| 5143 if (!(rb->type == RUNE_CHAR && rb->object.chr.ch < 0x100 | |
| 5144 && isspace (rb->object.chr.ch)) | |
| 5145 && !rb->type == RUNE_BLANK) | |
| 5146 { | |
| 5147 dl->bounds.right_white = rb->xpos + rb->width; | |
| 5148 done = 1; | |
| 5149 } | |
| 5150 | |
| 5151 elt--; | |
| 5152 | |
| 5153 } | |
| 5154 | |
| 5155 /* The line is blank so everything is considered to be right | |
| 5156 whitespace. */ | |
| 5157 if (!done) | |
| 5158 dl->bounds.right_white = dl->bounds.left_in; | |
| 5159 } | |
| 5160 | |
| 5161 /* Set the display blocks bounds. */ | |
| 5162 db->start_pos = dl->bounds.left_in; | |
| 5163 if (Dynarr_length (db->runes)) | |
| 5164 { | |
| 5165 struct rune *rb = Dynarr_atp (db->runes, Dynarr_length (db->runes) - 1); | |
| 5166 | |
| 5167 db->end_pos = rb->xpos + rb->width; | |
| 5168 } | |
| 5169 else | |
| 5170 db->end_pos = dl->bounds.right_white; | |
| 5171 | |
| 819 | 5172 calculate_baseline (&data); |
| 428 | 5173 |
| 5174 dl->ascent = data.new_ascent; | |
| 5175 dl->descent = data.new_descent; | |
| 5176 | |
| 5177 { | |
| 5178 unsigned short ascent = (unsigned short) XINT (w->minimum_line_ascent); | |
| 5179 | |
| 5180 if (dl->ascent < ascent) | |
| 5181 dl->ascent = ascent; | |
| 5182 } | |
| 5183 { | |
| 5184 unsigned short descent = (unsigned short) XINT (w->minimum_line_descent); | |
| 5185 | |
| 5186 if (dl->descent < descent) | |
| 5187 dl->descent = descent; | |
| 5188 } | |
| 5189 | |
| 819 | 5190 calculate_yoffset (dl, db); |
| 5191 | |
| 428 | 5192 dl->cursor_elt = data.cursor_x; |
| 5193 /* #### lossage lossage lossage! Fix this shit! */ | |
| 826 | 5194 if (data.byte_charpos > byte_string_zv) |
| 5195 dl->end_charpos = buffer_or_string_bytexpos_to_charxpos (disp_string, | |
| 5196 byte_string_zv); | |
| 428 | 5197 else |
| 826 | 5198 dl->end_charpos = |
| 5199 buffer_or_string_bytexpos_to_charxpos (disp_string, | |
| 5200 data.byte_charpos) - 1; | |
| 428 | 5201 if (truncate_win) |
| 434 | 5202 data.dl->num_chars = |
| 826 | 5203 string_column_at_point (disp_string, dl->end_charpos, |
| 793 | 5204 b ? XINT (b->tab_width) : 8); |
| 428 | 5205 else |
| 5206 /* This doesn't correctly take into account tabs and control | |
| 5207 characters but if the window isn't being truncated then this | |
| 5208 value isn't going to end up being used anyhow. */ | |
| 826 | 5209 data.dl->num_chars = dl->end_charpos - dl->charpos; |
| 428 | 5210 |
| 5211 /* #### handle horizontally scrolled line with text none of which | |
| 5212 was actually laid out. */ | |
| 5213 | |
| 5214 /* #### handle any remainder of overlay arrow */ | |
| 5215 | |
| 5216 if (*prop == ADD_FAILED) | |
| 5217 *prop = NULL; | |
| 5218 | |
| 5219 if (truncate_win && *prop) | |
| 5220 { | |
| 5221 Dynarr_free (*prop); | |
| 5222 *prop = NULL; | |
| 5223 } | |
| 5224 | |
| 5225 extent_fragment_delete (data.ef); | |
| 5226 | |
| 5227 /* #### If we started at EOB, then make sure we return a value past | |
| 5228 it so that regenerate_window will exit properly. This is bogus. | |
| 5229 The main loop should get fixed so that it isn't necessary to call | |
| 5230 this function if we are already at EOB. */ | |
| 5231 | |
| 826 | 5232 if (data.byte_charpos == byte_string_zv && byte_start_pos == byte_string_zv) |
| 793 | 5233 return string_index_byte_to_char (disp_string, |
| 826 | 5234 data.byte_charpos) + 1; /* Yuck! */ |
| 428 | 5235 else |
| 826 | 5236 return string_index_byte_to_char (disp_string, data.byte_charpos); |
| 428 | 5237 } |
| 5238 | |
| 5239 /* Given a display line and a starting position, ensure that the | |
| 5240 contents of the display line accurately represent the visual | |
| 5241 representation of the buffer contents starting from the given | |
| 5242 position when displayed in the given window. The display line ends | |
| 5243 when the contents of the line reach the right boundary of the given | |
| 434 | 5244 window. |
| 5245 | |
| 428 | 5246 This is very similar to generate_display_line but with the same |
| 5247 limitations as create_string_text_block. I have taken the liberty | |
| 665 | 5248 of fixing the bytebpos stuff though.*/ |
| 5249 | |
| 5250 static Charbpos | |
| 428 | 5251 generate_string_display_line (struct window *w, Lisp_Object disp_string, |
| 5252 struct display_line *dl, | |
| 826 | 5253 Charcount start_pos, |
| 428 | 5254 prop_block_dynarr **prop, |
| 5255 face_index default_face) | |
| 5256 { | |
| 826 | 5257 Charcount ret_charcount; |
| 428 | 5258 |
| 5259 /* you must set bounds before calling this. */ | |
| 434 | 5260 |
| 428 | 5261 /* Reset what this line is using. */ |
| 5262 if (dl->display_blocks) | |
| 5263 Dynarr_reset (dl->display_blocks); | |
| 5264 if (dl->left_glyphs) | |
| 5265 { | |
| 5266 Dynarr_free (dl->left_glyphs); | |
| 5267 dl->left_glyphs = 0; | |
| 5268 } | |
| 5269 if (dl->right_glyphs) | |
| 5270 { | |
| 5271 Dynarr_free (dl->right_glyphs); | |
| 5272 dl->right_glyphs = 0; | |
| 5273 } | |
| 5274 | |
| 5275 /* We aren't generating a modeline at the moment. */ | |
| 5276 dl->modeline = 0; | |
| 5277 | |
| 5278 /* Create a display block for the text region of the line. */ | |
| 826 | 5279 ret_charcount = create_string_text_block (w, disp_string, dl, start_pos, |
| 5280 prop, default_face); | |
| 5281 dl->charpos = start_pos; | |
| 5282 if (dl->end_charpos < dl->charpos) | |
| 5283 dl->end_charpos = dl->charpos; | |
| 428 | 5284 |
| 5285 /* If there are left glyphs associated with any character in the | |
| 5286 text block, then create a display block to handle them. */ | |
| 5287 if (dl->left_glyphs != NULL && Dynarr_length (dl->left_glyphs)) | |
| 5288 create_left_glyph_block (w, dl, 0); | |
| 5289 | |
| 5290 /* If there are right glyphs associated with any character in the | |
| 5291 text block, then create a display block to handle them. */ | |
| 5292 if (dl->right_glyphs != NULL && Dynarr_length (dl->right_glyphs)) | |
| 5293 create_right_glyph_block (w, dl); | |
| 5294 | |
| 826 | 5295 return ret_charcount; |
| 428 | 5296 } |
| 5297 | |
| 2518 | 5298 /* |
| 5299 | |
| 5300 Info on Re-entrancy crashes, with backtraces given: | |
| 5301 | |
| 5302 (Info-goto-node "(internals)Nasty Bugs due to Reentrancy in Redisplay Structures handling QUIT") | |
| 1318 | 5303 */ |
| 5304 | |
| 5305 | |
| 428 | 5306 /* This is ripped off from regenerate_window. All we want to do is |
| 5307 loop through elements in the string creating display lines until we | |
| 5308 have covered the provided area. Simple really. */ | |
| 5309 void | |
| 5310 generate_displayable_area (struct window *w, Lisp_Object disp_string, | |
| 5311 int xpos, int ypos, int width, int height, | |
| 5312 display_line_dynarr* dla, | |
| 826 | 5313 Charcount start_pos, |
| 428 | 5314 face_index default_face) |
| 5315 { | |
| 5316 int yend = ypos + height; | |
| 5317 Charcount s_zv; | |
| 5318 prop_block_dynarr *prop = 0; | |
| 5319 layout_bounds bounds; | |
| 2518 | 5320 int depth = -1; |
| 5321 | |
| 428 | 5322 /* if there's nothing to do then do nothing. code after this assumes |
| 5323 there is something to do. */ | |
| 5324 if (NILP (disp_string)) | |
| 5325 return; | |
| 5326 | |
| 2518 | 5327 /* See comment in regenerate_window() */ |
| 5328 if (!in_display) | |
| 5329 depth = enter_redisplay_critical_section (); | |
| 5330 | |
| 5331 assert (dla); | |
| 5332 Dynarr_reset (dla); | |
| 5333 | |
| 826 | 5334 s_zv = string_char_length (disp_string); |
| 428 | 5335 |
| 5336 bounds.left_out = xpos; | |
| 5337 bounds.right_out = xpos + width; | |
| 5338 /* The inner boundaries mark where the glyph margins are located. */ | |
| 5339 bounds.left_in = bounds.left_out + window_left_margin_width (w); | |
| 5340 bounds.right_in = bounds.right_out - window_right_margin_width (w); | |
| 5341 /* We cannot fully calculate the whitespace boundaries as they | |
| 5342 depend on the contents of the line being displayed. */ | |
| 5343 bounds.left_white = bounds.left_in; | |
| 5344 bounds.right_white = bounds.right_in; | |
| 5345 | |
| 5346 while (ypos < yend) | |
| 5347 { | |
| 5348 struct display_line dl; | |
| 5349 struct display_line *dlp; | |
| 826 | 5350 Charcount next_pos; |
| 428 | 5351 int local; |
| 851 | 5352 int pos_of_dlp = -1; |
| 428 | 5353 |
| 5354 if (Dynarr_length (dla) < Dynarr_largest (dla)) | |
| 5355 { | |
| 851 | 5356 pos_of_dlp = Dynarr_length (dla); |
| 5357 dlp = Dynarr_atp (dla, pos_of_dlp); | |
| 428 | 5358 local = 0; |
| 5359 } | |
| 5360 else | |
| 5361 { | |
| 4207 | 5362 DISPLAY_LINE_INIT (dl); |
| 428 | 5363 dlp = &dl; |
| 5364 local = 1; | |
| 5365 } | |
| 5366 | |
| 5367 dlp->bounds = bounds; | |
| 5368 dlp->offset = 0; | |
| 1318 | 5369 Dynarr_lock (dla); |
| 428 | 5370 next_pos = generate_string_display_line (w, disp_string, dlp, start_pos, |
| 5371 &prop, default_face); | |
| 1318 | 5372 Dynarr_unlock (dla); |
| 428 | 5373 /* we need to make sure that we continue along the line if there |
| 4187 | 5374 is more left to display otherwise we just end up redisplaying |
| 5375 the same chunk over and over again. */ | |
| 428 | 5376 if (next_pos == start_pos && next_pos < s_zv) |
| 5377 start_pos++; | |
| 5378 else | |
| 5379 start_pos = next_pos; | |
| 5380 | |
| 5381 dlp->ypos = ypos + dlp->ascent; | |
| 5382 ypos = dlp->ypos + dlp->descent; | |
| 5383 | |
| 5384 if (ypos > yend) | |
| 5385 { | |
| 5386 int visible_height = dlp->ascent + dlp->descent; | |
| 5387 | |
| 5388 dlp->clip = (ypos - yend); | |
| 5389 visible_height -= dlp->clip; | |
| 5390 | |
| 5391 if (visible_height < VERTICAL_CLIP (w, 1)) | |
| 5392 { | |
| 5393 if (local) | |
| 5394 free_display_line (dlp); | |
| 5395 break; | |
| 5396 } | |
| 5397 } | |
| 5398 else | |
| 5399 dlp->clip = 0; | |
| 5400 | |
|
4418
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5401 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
|
5402 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
|
5403 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
|
5404 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
|
5405 else |
|
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5406 ABORT (); |
| 428 | 5407 |
| 5408 /* #### This type of check needs to be done down in the | |
| 5409 generate_display_line call. */ | |
| 5410 if (start_pos >= s_zv) | |
| 5411 break; | |
| 5412 } | |
| 5413 | |
| 5414 if (prop) | |
| 5415 Dynarr_free (prop); | |
| 2518 | 5416 |
| 5417 if (depth >= 0) | |
| 5418 exit_redisplay_critical_section (depth); | |
| 428 | 5419 } |
| 5420 | |
| 5421 | |
| 5422 /***************************************************************************/ | |
| 5423 /* */ | |
| 5424 /* window-regeneration routines */ | |
| 5425 /* */ | |
| 5426 /***************************************************************************/ | |
| 5427 | |
| 5428 /* For a given window and starting position in the buffer it contains, | |
| 5429 ensure that the TYPE display lines accurately represent the | |
| 5430 presentation of the window. We pass the buffer instead of getting | |
| 5431 it from the window since redisplay_window may have temporarily | |
| 5432 changed it to the echo area buffer. */ | |
| 5433 | |
| 5434 static void | |
| 2518 | 5435 regenerate_window (struct window *w, Charbpos start_pos, Charbpos point, |
| 5436 int type) | |
| 428 | 5437 { |
| 5438 struct frame *f = XFRAME (w->frame); | |
| 5439 struct buffer *b = XBUFFER (w->buffer); | |
| 5440 int ypos = WINDOW_TEXT_TOP (w); | |
| 5441 int yend; /* set farther down */ | |
| 5442 int yclip = WINDOW_TEXT_TOP_CLIP (w); | |
| 442 | 5443 int force; |
| 2518 | 5444 int depth = -1; |
| 428 | 5445 |
| 5446 prop_block_dynarr *prop; | |
| 5447 layout_bounds bounds; | |
| 5448 display_line_dynarr *dla; | |
| 5449 int need_modeline; | |
| 5450 | |
| 5451 /* The lines had better exist by this point. */ | |
| 5452 if (!(dla = window_display_lines (w, type))) | |
| 2500 | 5453 ABORT (); |
| 2518 | 5454 |
| 5455 if (!in_display) | |
| 5456 depth = enter_redisplay_critical_section (); | |
| 5457 | |
| 5458 /* This is one spot where a re-entrancy crash will occur, due to a check | |
| 5459 in the dynarr to make sure it isn't "locked" */ | |
| 5460 /* | |
| 5461 | |
| 5462 Info on Re-entrancy crashes, with backtraces given: | |
| 5463 | |
| 5464 (Info-goto-node "(internals)Nasty Bugs due to Reentrancy in Redisplay Structures handling QUIT") | |
| 5465 */ | |
| 5466 | |
| 428 | 5467 Dynarr_reset (dla); |
| 5468 w->max_line_len = 0; | |
| 5469 | |
| 5470 /* Normally these get updated in redisplay_window but it is possible | |
| 5471 for this function to get called from some other points where that | |
| 5472 update may not have occurred. This acts as a safety check. */ | |
| 5473 if (!Dynarr_length (w->face_cachels)) | |
| 5474 reset_face_cachels (w); | |
| 5475 if (!Dynarr_length (w->glyph_cachels)) | |
| 5476 reset_glyph_cachels (w); | |
| 5477 | |
| 5478 Fset_marker (w->start[type], make_int (start_pos), w->buffer); | |
| 5479 Fset_marker (w->pointm[type], make_int (point), w->buffer); | |
| 5480 w->last_point_x[type] = -1; | |
| 5481 w->last_point_y[type] = -1; | |
| 5482 | |
| 5483 /* Make sure a modeline is in the structs if needed. */ | |
| 5484 need_modeline = ensure_modeline_generated (w, type); | |
| 5485 | |
| 5486 /* Wait until here to set this so that the structs have a modeline | |
| 5487 generated in the case where one didn't exist. */ | |
| 5488 yend = WINDOW_TEXT_BOTTOM (w); | |
| 5489 | |
| 5490 bounds = calculate_display_line_boundaries (w, 0); | |
| 5491 | |
| 5492 /* 97/3/14 jhod: stuff added here to support pre-prompts (used for input systems) */ | |
| 5493 if (MINI_WINDOW_P (w) | |
| 5494 && (!NILP (Vminibuf_prompt) || !NILP (Vminibuf_preprompt)) | |
| 5495 && !echo_area_active (f) | |
| 5496 && start_pos == BUF_BEGV (b)) | |
| 5497 { | |
| 5498 struct prop_block pb; | |
| 5499 Lisp_Object string; | |
| 5500 prop = Dynarr_new (prop_block); | |
| 5501 | |
| 5502 string = concat2(Vminibuf_preprompt, Vminibuf_prompt); | |
| 5503 pb.type = PROP_MINIBUF_PROMPT; | |
| 5504 pb.data.p_string.str = XSTRING_DATA(string); | |
| 5505 pb.data.p_string.len = XSTRING_LENGTH(string); | |
| 5506 Dynarr_add (prop, pb); | |
| 5507 } | |
| 5508 else | |
| 5509 prop = 0; | |
| 5510 | |
| 442 | 5511 /* When we are computing things for scrolling purposes, make |
| 5512 sure at least one line is always generated */ | |
| 5513 force = (type == CMOTION_DISP); | |
| 5514 | |
| 5515 /* Make sure this is set always */ | |
| 5516 /* Note the conversion at end */ | |
| 5517 w->window_end_pos[type] = start_pos; | |
| 5518 while (ypos < yend || force) | |
| 428 | 5519 { |
| 5520 struct display_line dl; | |
| 5521 struct display_line *dlp; | |
| 5522 int local; | |
| 851 | 5523 int pos_of_dlp = -1; |
| 428 | 5524 |
| 5525 if (Dynarr_length (dla) < Dynarr_largest (dla)) | |
| 5526 { | |
| 851 | 5527 pos_of_dlp = Dynarr_length (dla); |
| 5528 dlp = Dynarr_atp (dla, pos_of_dlp); | |
| 428 | 5529 local = 0; |
| 5530 } | |
| 5531 else | |
| 5532 { | |
| 4207 | 5533 DISPLAY_LINE_INIT (dl); |
| 428 | 5534 dlp = &dl; |
| 5535 local = 1; | |
| 5536 } | |
| 5537 | |
| 5538 dlp->bounds = bounds; | |
| 5539 dlp->offset = 0; | |
| 1318 | 5540 Dynarr_lock (dla); |
| 428 | 5541 start_pos = generate_display_line (w, dlp, 1, start_pos, &prop, type); |
| 1318 | 5542 Dynarr_unlock (dla); |
| 428 | 5543 |
| 5544 if (yclip > dlp->ascent) | |
| 5545 { | |
| 5546 /* this should never happen, but if it does just display the | |
| 5547 whole line */ | |
| 5548 yclip = 0; | |
| 5549 } | |
| 5550 | |
| 5551 dlp->ypos = (ypos + dlp->ascent) - yclip; | |
| 5552 ypos = dlp->ypos + dlp->descent; | |
| 5553 | |
| 5554 /* See if we've been asked to start midway through a line, for | |
| 4187 | 5555 partial display line scrolling. */ |
| 434 | 5556 if (yclip) |
| 428 | 5557 { |
| 5558 dlp->top_clip = yclip; | |
| 5559 yclip = 0; | |
| 5560 } | |
| 5561 else | |
| 5562 dlp->top_clip = 0; | |
| 5563 | |
| 5564 if (ypos > yend) | |
| 5565 { | |
| 5566 int visible_height = dlp->ascent + dlp->descent; | |
| 5567 | |
| 5568 dlp->clip = (ypos - yend); | |
| 5569 /* Although this seems strange we could have a single very | |
| 5570 tall line visible for which we need to account for both | |
| 5571 the top clip and the bottom clip. */ | |
| 5572 visible_height -= (dlp->clip + dlp->top_clip); | |
| 5573 | |
| 442 | 5574 if (visible_height < VERTICAL_CLIP (w, 1) && !force) |
| 428 | 5575 { |
| 5576 if (local) | |
| 5577 free_display_line (dlp); | |
| 5578 break; | |
| 5579 } | |
| 5580 } | |
| 5581 else | |
| 5582 dlp->clip = 0; | |
| 5583 | |
| 5584 if (dlp->cursor_elt != -1) | |
| 5585 { | |
| 5586 /* #### This check is steaming crap. Have to get things | |
| 4187 | 5587 fixed so when create_text_block hits EOB, we're done, |
| 5588 period. */ | |
| 428 | 5589 if (w->last_point_x[type] == -1) |
| 5590 { | |
| 5591 w->last_point_x[type] = dlp->cursor_elt; | |
| 5592 w->last_point_y[type] = Dynarr_length (dla); | |
| 5593 } | |
| 5594 else | |
| 5595 { | |
| 5596 /* #### This means that we've added a cursor at EOB | |
| 4187 | 5597 twice. Yuck oh yuck. */ |
| 1318 | 5598 struct display_block *db; |
| 5599 | |
| 5600 Dynarr_lock (dla); | |
| 5601 db = get_display_block_from_line (dlp, TEXT); | |
| 5602 Dynarr_unlock (dla); | |
| 428 | 5603 |
| 5604 Dynarr_atp (db->runes, dlp->cursor_elt)->cursor_type = NO_CURSOR; | |
| 5605 dlp->cursor_elt = -1; | |
| 5606 } | |
| 5607 } | |
| 5608 | |
| 5609 if (dlp->num_chars > w->max_line_len) | |
| 5610 w->max_line_len = dlp->num_chars; | |
| 5611 | |
|
4418
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5612 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
|
5613 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
|
5614 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
|
5615 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
|
5616 else |
|
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5617 ABORT (); |
| 428 | 5618 |
| 5619 /* #### This isn't right, but it is close enough for now. */ | |
| 5620 w->window_end_pos[type] = start_pos; | |
| 5621 | |
| 5622 /* #### This type of check needs to be done down in the | |
| 5623 generate_display_line call. */ | |
| 5624 if (start_pos > BUF_ZV (b)) | |
| 5625 break; | |
| 442 | 5626 |
| 5627 force = 0; | |
| 428 | 5628 } |
| 5629 | |
| 5630 if (prop) | |
| 5631 Dynarr_free (prop); | |
| 5632 | |
| 5633 /* #### More not quite right, but close enough. */ | |
| 442 | 5634 /* Ben sez: apparently window_end_pos[] is measured |
| 428 | 5635 as the number of characters between the window end and the |
| 5636 end of the buffer? This seems rather weirdo. What's | |
| 442 | 5637 the justification for this? |
| 5638 | |
| 5639 JV sez: Because BUF_Z (b) would be a good initial value, however | |
| 5640 that can change. This representation allows initalizing with 0. | |
| 5641 */ | |
| 428 | 5642 w->window_end_pos[type] = BUF_Z (b) - w->window_end_pos[type]; |
| 5643 | |
| 5644 if (need_modeline) | |
| 5645 { | |
| 5646 /* We know that this is the right thing to use because we put it | |
| 4187 | 5647 there when we first started working in this function. */ |
| 428 | 5648 generate_modeline (w, Dynarr_atp (dla, 0), type); |
| 5649 } | |
| 2518 | 5650 |
| 5651 if (depth >= 0) | |
| 5652 exit_redisplay_critical_section (depth); | |
| 428 | 5653 } |
| 5654 | |
| 826 | 5655 #define REGEN_INC_FIND_START_END \ |
| 5656 do { \ | |
| 5657 /* Determine start and end of lines. */ \ | |
| 5658 if (!Dynarr_length (cdla)) \ | |
| 5659 return 0; \ | |
| 5660 else \ | |
| 5661 { \ | |
| 428 | 5662 if (Dynarr_atp (cdla, 0)->modeline && Dynarr_atp (ddla, 0)->modeline) \ |
| 826 | 5663 { \ |
| 5664 dla_start = 1; \ | |
| 5665 } \ | |
| 5666 else if (!Dynarr_atp (cdla, 0)->modeline \ | |
| 5667 && !Dynarr_atp (ddla, 0)->modeline) \ | |
| 5668 { \ | |
| 5669 dla_start = 0; \ | |
| 5670 } \ | |
| 5671 else \ | |
| 2500 | 5672 ABORT (); /* structs differ */ \ |
| 826 | 5673 \ |
| 5674 dla_end = Dynarr_length (cdla) - 1; \ | |
| 5675 } \ | |
| 5676 \ | |
| 5677 start_pos = (Dynarr_atp (cdla, dla_start)->charpos \ | |
| 5678 + Dynarr_atp (cdla, dla_start)->offset); \ | |
| 5679 /* If this isn't true, then startp has changed and we need to do a \ | |
| 5680 full regen. */ \ | |
| 5681 if (startp != start_pos) \ | |
| 5682 return 0; \ | |
| 5683 \ | |
| 5684 /* Point is outside the visible region so give up. */ \ | |
| 5685 if (pointm < start_pos) \ | |
| 5686 return 0; \ | |
| 5687 \ | |
| 428 | 5688 } while (0) |
| 5689 | |
| 5690 /* This attempts to incrementally update the display structures. It | |
| 5691 returns a boolean indicating success or failure. This function is | |
| 5692 very similar to regenerate_window_incrementally and is in fact only | |
| 5693 called from that function. However, because of the nature of the | |
| 5694 changes it deals with it sometimes makes different assumptions | |
| 5695 which can lead to success which are much more difficult to make | |
| 5696 when dealing with buffer changes. */ | |
| 5697 | |
| 5698 static int | |
| 665 | 5699 regenerate_window_extents_only_changed (struct window *w, Charbpos startp, |
| 5700 Charbpos pointm, | |
| 428 | 5701 Charcount beg_unchanged, |
| 5702 Charcount end_unchanged) | |
| 5703 { | |
| 5704 struct buffer *b = XBUFFER (w->buffer); | |
| 5705 display_line_dynarr *cdla = window_display_lines (w, CURRENT_DISP); | |
| 5706 display_line_dynarr *ddla = window_display_lines (w, DESIRED_DISP); | |
| 5707 | |
| 5708 int dla_start = 0; | |
| 5709 int dla_end, line; | |
| 5710 int first_line, last_line; | |
| 665 | 5711 Charbpos start_pos; |
| 428 | 5712 /* Don't define this in the loop where it is used because we |
| 5713 definitely want its value to survive between passes. */ | |
| 5714 prop_block_dynarr *prop = NULL; | |
| 5715 | |
| 5716 /* If we don't have any buffer change recorded but the modiff flag has | |
| 5717 been incremented, then fail. I'm not sure of the exact circumstances | |
| 5718 under which this can happen, but I believe that it is probably a | |
| 5719 reasonable happening. */ | |
| 5720 if (!point_visible (w, pointm, CURRENT_DISP) | |
| 5721 || XINT (w->last_modified[CURRENT_DISP]) < BUF_MODIFF (b)) | |
| 5722 return 0; | |
| 5723 | |
| 5724 /* If the cursor is moved we attempt to update it. If we succeed we | |
| 5725 go ahead and proceed with the optimization attempt. */ | |
| 5726 if (!EQ (Fmarker_buffer (w->last_point[CURRENT_DISP]), w->buffer) | |
| 5727 || pointm != marker_position (w->last_point[CURRENT_DISP])) | |
| 5728 { | |
| 5729 struct frame *f = XFRAME (w->frame); | |
| 5730 struct device *d = XDEVICE (f->device); | |
| 5731 struct frame *sel_f = device_selected_frame (d); | |
| 5732 int success = 0; | |
| 5733 | |
| 5734 if (w->last_point_x[CURRENT_DISP] != -1 | |
| 5735 && w->last_point_y[CURRENT_DISP] != -1) | |
| 5736 { | |
| 5737 | |
| 5738 if (redisplay_move_cursor (w, pointm, WINDOW_TTY_P (w))) | |
| 5739 { | |
| 5740 /* Always regenerate the modeline in case it is | |
| 4187 | 5741 displaying the current line or column. */ |
| 428 | 5742 regenerate_modeline (w); |
| 5743 success = 1; | |
| 5744 } | |
| 5745 } | |
| 5746 else if (w != XWINDOW (FRAME_SELECTED_WINDOW (sel_f))) | |
| 5747 { | |
| 5748 if (f->modeline_changed) | |
| 5749 regenerate_modeline (w); | |
| 5750 success = 1; | |
| 5751 } | |
| 5752 | |
| 5753 if (!success) | |
| 5754 return 0; | |
| 5755 } | |
| 5756 | |
| 5757 if (beg_unchanged == -1 && end_unchanged == -1) | |
| 5758 return 1; | |
| 5759 | |
| 5760 /* assert: There are no buffer modifications or they are all below the | |
| 5761 visible region. We assume that regenerate_window_incrementally has | |
| 5762 not called us unless this is true. */ | |
| 5763 | |
| 5764 REGEN_INC_FIND_START_END; | |
| 5765 | |
| 5766 /* If the changed are starts before the visible area, give up. */ | |
| 5767 if (beg_unchanged < startp) | |
| 5768 return 0; | |
| 5769 | |
| 5770 /* Find what display line the extent changes first affect. */ | |
| 5771 line = dla_start; | |
| 5772 while (line <= dla_end) | |
| 5773 { | |
| 5774 struct display_line *dl = Dynarr_atp (cdla, line); | |
| 826 | 5775 Charbpos lstart = dl->charpos + dl->offset; |
| 5776 Charbpos lend = dl->end_charpos + dl->offset; | |
| 428 | 5777 |
| 5778 if (beg_unchanged >= lstart && beg_unchanged <= lend) | |
| 5779 break; | |
| 5780 | |
| 5781 line++; | |
| 5782 } | |
| 5783 | |
| 5784 /* If the changes are below the visible area then if point hasn't | |
| 5785 moved return success otherwise fail in order to be safe. */ | |
| 5786 if (line > dla_end) | |
| 5787 { | |
| 5788 if (EQ (Fmarker_buffer (w->last_point[CURRENT_DISP]), w->buffer) | |
| 5789 && pointm == marker_position (w->last_point[CURRENT_DISP])) | |
| 5790 return 1; | |
| 5791 else | |
| 5792 return 0; | |
| 5793 } | |
| 5794 | |
| 5795 /* At this point we know what line the changes first affect. We now | |
| 5796 begin redrawing lines as long as we are still in the affected | |
| 5797 region and the line's size and positioning don't change. | |
| 5798 Otherwise we fail. If we fail we will have altered the desired | |
| 5799 structs which could lead to an assertion failure. However, if we | |
| 5800 fail the next thing that is going to happen is a full regen so we | |
| 5801 will actually end up being safe. */ | |
| 5802 w->last_modified[DESIRED_DISP] = make_int (BUF_MODIFF (b)); | |
| 5803 w->last_facechange[DESIRED_DISP] = make_int (BUF_FACECHANGE (b)); | |
| 5804 Fset_marker (w->last_start[DESIRED_DISP], make_int (startp), w->buffer); | |
| 5805 Fset_marker (w->last_point[DESIRED_DISP], make_int (pointm), w->buffer); | |
| 5806 | |
| 5807 first_line = last_line = line; | |
| 5808 while (line <= dla_end) | |
| 5809 { | |
| 2286 | 5810 Charbpos old_start, old_end; |
| 428 | 5811 struct display_line *cdl = Dynarr_atp (cdla, line); |
| 5812 struct display_line *ddl = Dynarr_atp (ddla, line); | |
| 5813 struct display_block *db; | |
| 5814 int initial_size; | |
| 5815 | |
| 826 | 5816 assert (cdl->charpos == ddl->charpos); |
| 5817 assert (cdl->end_charpos == ddl->end_charpos); | |
| 428 | 5818 assert (cdl->offset == ddl->offset); |
| 5819 | |
| 5820 db = get_display_block_from_line (ddl, TEXT); | |
| 5821 initial_size = Dynarr_length (db->runes); | |
| 826 | 5822 old_start = ddl->charpos + ddl->offset; |
| 5823 old_end = ddl->end_charpos + ddl->offset; | |
| 428 | 5824 |
| 5825 /* If this is the first line being updated and it used | |
| 4187 | 5826 propagation data, fail. Otherwise we'll be okay because |
| 5827 we'll have the necessary propagation data. */ | |
| 428 | 5828 if (line == first_line && ddl->used_prop_data) |
| 5829 return 0; | |
| 5830 | |
| 2286 | 5831 generate_display_line (w, ddl, 0, ddl->charpos + ddl->offset, |
| 5832 &prop, DESIRED_DISP); | |
| 428 | 5833 ddl->offset = 0; |
| 5834 | |
| 5835 /* #### If there is propagated stuff the fail. We could | |
| 4187 | 5836 probably actually deal with this if the line had propagated |
| 5837 information when originally created by a full | |
| 5838 regeneration. */ | |
| 428 | 5839 if (prop) |
| 5840 { | |
| 5841 Dynarr_free (prop); | |
| 5842 return 0; | |
| 5843 } | |
| 5844 | |
| 5845 /* If any line position parameters have changed or a | |
| 4187 | 5846 cursor has disappeared or disappeared, fail. */ |
| 428 | 5847 db = get_display_block_from_line (ddl, TEXT); |
| 5848 if (cdl->ypos != ddl->ypos | |
| 5849 || cdl->ascent != ddl->ascent | |
| 5850 || cdl->descent != ddl->descent | |
| 5851 || cdl->top_clip != ddl->top_clip | |
| 5852 || (cdl->cursor_elt != -1 && ddl->cursor_elt == -1) | |
| 5853 || (cdl->cursor_elt == -1 && ddl->cursor_elt != -1) | |
| 826 | 5854 || old_start != ddl->charpos |
| 5855 || old_end != ddl->end_charpos | |
| 428 | 5856 || initial_size != Dynarr_length (db->runes)) |
| 5857 { | |
| 5858 return 0; | |
| 5859 } | |
| 5860 | |
| 5861 if (ddl->cursor_elt != -1) | |
| 5862 { | |
| 5863 w->last_point_x[DESIRED_DISP] = ddl->cursor_elt; | |
| 5864 w->last_point_y[DESIRED_DISP] = line; | |
| 5865 } | |
| 5866 | |
| 5867 last_line = line; | |
| 5868 | |
| 5869 /* If the extent changes end on the line we just updated then | |
| 4187 | 5870 we're done. Otherwise go on to the next line. */ |
| 826 | 5871 if (end_unchanged <= ddl->end_charpos) |
| 428 | 5872 break; |
| 5873 else | |
| 5874 line++; | |
| 5875 } | |
| 5876 | |
| 5877 redisplay_update_line (w, first_line, last_line, 1); | |
| 5878 return 1; | |
| 5879 } | |
| 5880 | |
| 5881 /* Attempt to update the display data structures based on knowledge of | |
| 5882 the changed region in the buffer. Returns a boolean indicating | |
| 5883 success or failure. If this function returns a failure then a | |
| 5884 regenerate_window _must_ be performed next in order to maintain | |
| 5885 invariants located here. */ | |
| 5886 | |
| 5887 static int | |
| 665 | 5888 regenerate_window_incrementally (struct window *w, Charbpos startp, |
| 5889 Charbpos pointm) | |
| 428 | 5890 { |
| 5891 struct buffer *b = XBUFFER (w->buffer); | |
| 5892 display_line_dynarr *cdla = window_display_lines (w, CURRENT_DISP); | |
| 5893 display_line_dynarr *ddla = window_display_lines (w, DESIRED_DISP); | |
| 5894 Charcount beg_unchanged, end_unchanged; | |
| 5895 Charcount extent_beg_unchanged, extent_end_unchanged; | |
| 5896 | |
| 5897 int dla_start = 0; | |
| 5898 int dla_end, line; | |
| 665 | 5899 Charbpos start_pos; |
| 428 | 5900 |
| 5901 /* If this function is called, the current and desired structures | |
| 5902 had better be identical. If they are not, then that is a bug. */ | |
| 5903 assert (Dynarr_length (cdla) == Dynarr_length (ddla)); | |
| 5904 | |
| 5905 /* We don't handle minibuffer windows yet. The minibuffer prompt | |
| 5906 screws us up. */ | |
| 5907 if (MINI_WINDOW_P (w)) | |
| 5908 return 0; | |
| 5909 | |
| 5910 extent_beg_unchanged = BUF_EXTENT_BEGIN_UNCHANGED (b); | |
| 5911 extent_end_unchanged = (BUF_EXTENT_END_UNCHANGED (b) == -1 | |
| 5912 ? -1 | |
| 5913 : BUF_Z (b) - BUF_EXTENT_END_UNCHANGED (b)); | |
| 5914 | |
| 5915 /* If nothing has changed in the buffer, then make sure point is ok | |
| 5916 and succeed. */ | |
| 5917 if (BUF_BEGIN_UNCHANGED (b) == -1 && BUF_END_UNCHANGED (b) == -1) | |
| 5918 return regenerate_window_extents_only_changed (w, startp, pointm, | |
| 5919 extent_beg_unchanged, | |
| 5920 extent_end_unchanged); | |
| 5921 | |
| 5922 /* We can't deal with deleted newlines. */ | |
| 5923 if (BUF_NEWLINE_WAS_DELETED (b)) | |
| 5924 return 0; | |
| 5925 | |
| 5926 beg_unchanged = BUF_BEGIN_UNCHANGED (b); | |
| 5927 end_unchanged = (BUF_END_UNCHANGED (b) == -1 | |
| 5928 ? -1 | |
| 5929 : BUF_Z (b) - BUF_END_UNCHANGED (b)); | |
| 5930 | |
| 5931 REGEN_INC_FIND_START_END; | |
| 5932 | |
| 5933 /* If the changed area starts before the visible area, give up. */ | |
| 5934 if (beg_unchanged < startp) | |
| 5935 return 0; | |
| 5936 | |
| 5937 /* Find what display line the buffer changes first affect. */ | |
| 5938 line = dla_start; | |
| 5939 while (line <= dla_end) | |
| 5940 { | |
| 5941 struct display_line *dl = Dynarr_atp (cdla, line); | |
| 826 | 5942 Charbpos lstart = dl->charpos + dl->offset; |
| 5943 Charbpos lend = dl->end_charpos + dl->offset; | |
| 428 | 5944 |
| 5945 if (beg_unchanged >= lstart && beg_unchanged <= lend) | |
| 5946 break; | |
| 5947 | |
| 5948 line++; | |
| 5949 } | |
| 5950 | |
| 5951 /* If the changes are below the visible area then if point hasn't | |
| 5952 moved return success otherwise fail in order to be safe. */ | |
| 5953 if (line > dla_end) | |
| 5954 return regenerate_window_extents_only_changed (w, startp, pointm, | |
| 5955 extent_beg_unchanged, | |
| 5956 extent_end_unchanged); | |
| 5957 else | |
| 5958 /* At this point we know what line the changes first affect. We | |
| 5959 now redraw that line. If the changes are contained within it | |
| 5960 we are going to succeed and can update just that one line. | |
| 5961 Otherwise we fail. If we fail we will have altered the desired | |
| 5962 structs which could lead to an assertion failure. However, if | |
| 5963 we fail the next thing that is going to happen is a full regen | |
| 5964 so we will actually end up being safe. */ | |
| 5965 { | |
| 5966 prop_block_dynarr *prop = NULL; | |
| 5967 struct display_line *cdl = Dynarr_atp (cdla, line); | |
| 5968 struct display_line *ddl = Dynarr_atp (ddla, line); | |
| 5969 | |
| 826 | 5970 assert (cdl->charpos == ddl->charpos); |
| 5971 assert (cdl->end_charpos == ddl->end_charpos); | |
| 428 | 5972 assert (cdl->offset == ddl->offset); |
| 5973 | |
| 442 | 5974 /* If the line continues to next display line, fail. */ |
| 5975 if (ddl->line_continuation) | |
| 5976 return 0; | |
| 428 | 5977 |
| 5978 /* If the line was generated using propagation data, fail. */ | |
| 5979 if (ddl->used_prop_data) | |
| 5980 return 0; | |
| 5981 | |
| 2286 | 5982 generate_display_line (w, ddl, 0, ddl->charpos + ddl->offset, |
| 5983 &prop, DESIRED_DISP); | |
| 428 | 5984 ddl->offset = 0; |
| 5985 | |
| 5986 /* If there is propagated stuff then it is pretty much a | |
| 4187 | 5987 guarantee that more than just the one line is affected. */ |
| 428 | 5988 if (prop) |
| 5989 { | |
| 5990 Dynarr_free (prop); | |
| 5991 return 0; | |
| 5992 } | |
| 5993 | |
| 442 | 5994 /* If the line continues to next display line, fail. */ |
| 5995 if (ddl->line_continuation) | |
| 5996 return 0; | |
| 428 | 5997 |
| 5998 /* If any line position parameters have changed or a | |
| 4187 | 5999 cursor has disappeared or disappeared, fail. */ |
| 428 | 6000 if (cdl->ypos != ddl->ypos |
| 6001 || cdl->ascent != ddl->ascent | |
| 6002 || cdl->descent != ddl->descent | |
| 6003 || cdl->top_clip != ddl->top_clip | |
| 6004 || (cdl->cursor_elt != -1 && ddl->cursor_elt == -1) | |
| 6005 || (cdl->cursor_elt == -1 && ddl->cursor_elt != -1)) | |
| 6006 { | |
| 6007 return 0; | |
| 6008 } | |
| 6009 | |
| 6010 /* If the changed area also ends on this line, then we may be in | |
| 4187 | 6011 business. Update everything and return success. */ |
| 826 | 6012 if (end_unchanged >= ddl->charpos && end_unchanged <= ddl->end_charpos) |
| 428 | 6013 { |
| 6014 w->last_modified[DESIRED_DISP] = make_int (BUF_MODIFF (b)); | |
| 6015 w->last_facechange[DESIRED_DISP] = make_int (BUF_FACECHANGE (b)); | |
| 6016 Fset_marker (w->last_start[DESIRED_DISP], make_int (startp), | |
| 6017 w->buffer); | |
| 6018 Fset_marker (w->last_point[DESIRED_DISP], make_int (pointm), | |
| 6019 w->buffer); | |
| 6020 | |
| 6021 if (ddl->cursor_elt != -1) | |
| 6022 { | |
| 6023 w->last_point_x[DESIRED_DISP] = ddl->cursor_elt; | |
| 6024 w->last_point_y[DESIRED_DISP] = line; | |
| 6025 } | |
| 6026 | |
| 6027 redisplay_update_line (w, line, line, 1); | |
| 6028 regenerate_modeline (w); | |
| 6029 | |
| 6030 /* #### For now we just flush the cache until this has been | |
| 4187 | 6031 tested. After that is done, this should correct the |
| 6032 cache directly. */ | |
| 428 | 6033 Dynarr_reset (w->line_start_cache); |
| 6034 | |
| 6035 /* Adjust the extent changed boundaries to remove any | |
| 4187 | 6036 overlap with the buffer changes since we've just |
| 6037 successfully updated that area. */ | |
| 428 | 6038 if (extent_beg_unchanged != -1 |
| 6039 && extent_beg_unchanged >= beg_unchanged | |
| 6040 && extent_beg_unchanged < end_unchanged) | |
| 6041 extent_beg_unchanged = end_unchanged; | |
| 6042 | |
| 6043 if (extent_end_unchanged != -1 | |
| 6044 && extent_end_unchanged >= beg_unchanged | |
| 6045 && extent_end_unchanged < end_unchanged) | |
| 6046 extent_end_unchanged = beg_unchanged - 1; | |
| 6047 | |
| 6048 if (extent_end_unchanged <= extent_beg_unchanged) | |
| 6049 extent_beg_unchanged = extent_end_unchanged = -1; | |
| 6050 | |
| 6051 /* This could lead to odd results if it fails, but since the | |
| 4187 | 6052 buffer changes update succeeded this probably will to. |
| 6053 We already know that the extent changes start at or after | |
| 6054 the line because we checked before entering the loop. */ | |
| 428 | 6055 if (extent_beg_unchanged != -1 |
| 6056 && extent_end_unchanged != -1 | |
| 826 | 6057 && ((extent_beg_unchanged < ddl->charpos) |
| 6058 || (extent_end_unchanged > ddl->end_charpos))) | |
| 428 | 6059 return regenerate_window_extents_only_changed (w, startp, pointm, |
| 6060 extent_beg_unchanged, | |
| 6061 extent_end_unchanged); | |
| 6062 else | |
| 6063 return 1; | |
| 6064 } | |
| 6065 } | |
| 6066 | |
| 6067 /* Oh, well. */ | |
| 6068 return 0; | |
| 6069 } | |
| 6070 | |
| 6071 /* Given a window and a point, update the given display lines such | |
| 6072 that point is displayed in the middle of the window. | |
| 6073 Return the window's new start position. */ | |
| 6074 | |
| 665 | 6075 static Charbpos |
| 6076 regenerate_window_point_center (struct window *w, Charbpos point, int type) | |
| 428 | 6077 { |
| 665 | 6078 Charbpos startp; |
| 428 | 6079 |
| 6080 /* We need to make sure that the modeline is generated so that the | |
| 6081 window height can be calculated correctly. */ | |
| 6082 ensure_modeline_generated (w, type); | |
| 6083 | |
| 6084 startp = start_with_line_at_pixpos (w, point, window_half_pixpos (w)); | |
| 6085 regenerate_window (w, startp, point, type); | |
| 6086 Fset_marker (w->start[type], make_int (startp), w->buffer); | |
| 6087 | |
| 6088 return startp; | |
| 6089 } | |
| 6090 | |
| 6091 /* Given a window and a set of display lines, return a boolean | |
| 6092 indicating whether the given point is contained within. */ | |
| 6093 | |
| 6094 static int | |
| 665 | 6095 point_visible (struct window *w, Charbpos point, int type) |
| 428 | 6096 { |
| 6097 struct buffer *b = XBUFFER (w->buffer); | |
| 6098 display_line_dynarr *dla = window_display_lines (w, type); | |
| 6099 int first_line; | |
| 6100 | |
| 6101 if (Dynarr_length (dla) && Dynarr_atp (dla, 0)->modeline) | |
| 6102 first_line = 1; | |
| 6103 else | |
| 6104 first_line = 0; | |
| 6105 | |
| 6106 if (Dynarr_length (dla) > first_line) | |
| 6107 { | |
| 665 | 6108 Charbpos start, end; |
| 428 | 6109 struct display_line *dl = Dynarr_atp (dla, first_line); |
| 6110 | |
| 826 | 6111 start = dl->charpos; |
| 428 | 6112 end = BUF_Z (b) - w->window_end_pos[type] - 1; |
| 6113 | |
| 6114 if (point >= start && point <= end) | |
| 6115 { | |
| 6116 if (!MINI_WINDOW_P (w) && scroll_on_clipped_lines) | |
| 6117 { | |
| 6118 dl = Dynarr_atp (dla, Dynarr_length (dla) - 1); | |
| 6119 | |
| 826 | 6120 if (point >= (dl->charpos + dl->offset) |
| 6121 && point <= (dl->end_charpos + dl->offset)) | |
| 428 | 6122 return !dl->clip; |
| 6123 else | |
| 6124 return 1; | |
| 6125 } | |
| 6126 else | |
| 6127 return 1; | |
| 6128 } | |
| 6129 else | |
| 6130 return 0; | |
| 6131 } | |
| 6132 else | |
| 6133 return 0; | |
| 6134 } | |
| 6135 | |
| 6136 /* Return pixel position the middle of the window, not including the | |
| 6137 modeline and any potential horizontal scrollbar. */ | |
| 6138 | |
| 6139 int | |
| 6140 window_half_pixpos (struct window *w) | |
| 6141 { | |
| 6142 return WINDOW_TEXT_TOP (w) + (WINDOW_TEXT_HEIGHT (w) >> 1); | |
| 6143 } | |
| 6144 | |
| 6145 /* Return the display line which is currently in the middle of the | |
| 6146 window W for display lines TYPE. */ | |
| 6147 | |
| 6148 int | |
| 665 | 6149 line_at_center (struct window *w, int type, Charbpos start, Charbpos point) |
| 428 | 6150 { |
| 6151 display_line_dynarr *dla; | |
| 6152 int half; | |
| 6153 int elt; | |
| 6154 int first_elt = (MINI_WINDOW_P (w) ? 0 : 1); | |
| 6155 | |
| 6156 if (type == CMOTION_DISP) | |
| 6157 regenerate_window (w, start, point, type); | |
| 6158 | |
| 6159 dla = window_display_lines (w, type); | |
| 6160 half = window_half_pixpos (w); | |
| 6161 | |
| 6162 for (elt = first_elt; elt < Dynarr_length (dla); elt++) | |
| 6163 { | |
| 6164 struct display_line *dl = Dynarr_atp (dla, elt); | |
| 6165 int line_bot = dl->ypos + dl->descent; | |
| 6166 | |
| 6167 if (line_bot > half) | |
| 6168 return elt; | |
| 6169 } | |
| 6170 | |
| 6171 /* We may not have a line at the middle if the end of the buffer is | |
| 6172 being displayed. */ | |
| 6173 return -1; | |
| 6174 } | |
| 6175 | |
| 6176 /* Return a value for point that would place it at the beginning of | |
| 6177 the line which is in the middle of the window. */ | |
| 6178 | |
| 665 | 6179 Charbpos |
| 6180 point_at_center (struct window *w, int type, Charbpos start, Charbpos point) | |
| 428 | 6181 { |
| 6182 /* line_at_center will regenerate the display structures, if necessary. */ | |
| 6183 int line = line_at_center (w, type, start, point); | |
| 6184 | |
| 6185 if (line == -1) | |
| 6186 return BUF_ZV (XBUFFER (w->buffer)); | |
| 6187 else | |
| 6188 { | |
| 6189 display_line_dynarr *dla = window_display_lines (w, type); | |
| 6190 struct display_line *dl = Dynarr_atp (dla, line); | |
| 6191 | |
| 826 | 6192 return dl->charpos; |
| 428 | 6193 } |
| 6194 } | |
| 6195 | |
| 6196 /* For a given window, ensure that the current visual representation | |
| 6197 is accurate. */ | |
| 6198 | |
| 6199 static void | |
| 6200 redisplay_window (Lisp_Object window, int skip_selected) | |
| 6201 { | |
| 6202 struct window *w = XWINDOW (window); | |
| 6203 struct frame *f = XFRAME (w->frame); | |
| 6204 struct device *d = XDEVICE (f->device); | |
| 6205 Lisp_Object old_buffer = w->buffer; | |
| 6206 Lisp_Object the_buffer = w->buffer; | |
| 6207 struct buffer *b; | |
| 6208 int echo_active = 0; | |
| 6209 int startp = 1; | |
| 6210 int pointm; | |
| 6211 int old_startp = 1; | |
| 6212 int old_pointm = 1; | |
| 6213 int selected_in_its_frame; | |
| 6214 int selected_globally; | |
| 6215 int skip_output = 0; | |
| 6216 int truncation_changed; | |
| 6217 int inactive_minibuffer = | |
| 6218 (MINI_WINDOW_P (w) && | |
| 6219 (f != device_selected_frame (d)) && | |
| 6220 !is_surrogate_for_selected_frame (f)); | |
| 6221 | |
| 6222 /* #### In the new world this function actually does a bunch of | |
| 6223 optimizations such as buffer-based scrolling, but none of that is | |
| 6224 implemented yet. */ | |
| 6225 | |
| 6226 /* If this is a combination window, do its children; that's all. | |
| 6227 The selected window is always a leaf so we don't check for | |
| 6228 skip_selected here. */ | |
| 6229 if (!NILP (w->vchild)) | |
| 6230 { | |
| 6231 redisplay_windows (w->vchild, skip_selected); | |
| 6232 return; | |
| 6233 } | |
| 6234 if (!NILP (w->hchild)) | |
| 6235 { | |
| 6236 redisplay_windows (w->hchild, skip_selected); | |
| 6237 return; | |
| 6238 } | |
| 6239 | |
| 6240 /* Is this window the selected window on its frame? */ | |
| 6241 selected_in_its_frame = (w == XWINDOW (FRAME_SELECTED_WINDOW (f))); | |
| 6242 selected_globally = | |
| 6243 selected_in_its_frame && | |
| 6244 EQ(DEVICE_CONSOLE(d), Vselected_console) && | |
| 6245 XDEVICE(CONSOLE_SELECTED_DEVICE(XCONSOLE(DEVICE_CONSOLE(d)))) == d && | |
| 6246 XFRAME(DEVICE_SELECTED_FRAME(d)) == f; | |
| 6247 if (skip_selected && selected_in_its_frame) | |
| 6248 return; | |
| 6249 | |
| 6250 /* It is possible that the window is not fully initialized yet. */ | |
| 6251 if (NILP (w->buffer)) | |
| 6252 return; | |
| 6253 | |
| 6254 if (MINI_WINDOW_P (w) && echo_area_active (f)) | |
| 6255 { | |
| 6256 w->buffer = the_buffer = Vecho_area_buffer; | |
| 6257 echo_active = 1; | |
| 6258 } | |
| 6259 | |
| 6260 b = XBUFFER (w->buffer); | |
| 6261 | |
| 6262 if (echo_active) | |
| 6263 { | |
| 6264 old_pointm = selected_globally | |
| 4187 | 6265 ? BUF_PT (b) |
| 6266 : marker_position (w->pointm[CURRENT_DISP]); | |
| 428 | 6267 pointm = 1; |
| 6268 } | |
| 6269 else | |
| 6270 { | |
| 6271 if (selected_globally) | |
| 6272 { | |
| 6273 pointm = BUF_PT (b); | |
| 6274 } | |
| 6275 else | |
| 6276 { | |
| 6277 pointm = marker_position (w->pointm[CURRENT_DISP]); | |
| 6278 | |
| 6279 if (pointm < BUF_BEGV (b)) | |
| 6280 pointm = BUF_BEGV (b); | |
| 6281 else if (pointm > BUF_ZV (b)) | |
| 6282 pointm = BUF_ZV (b); | |
| 6283 } | |
| 6284 } | |
| 6285 Fset_marker (w->pointm[DESIRED_DISP], make_int (pointm), the_buffer); | |
| 6286 | |
| 6287 /* If the buffer has changed we have to invalidate all of our face | |
| 6288 cache elements. */ | |
| 6289 if ((!echo_active && b != window_display_buffer (w)) | |
| 6290 || !Dynarr_length (w->face_cachels) | |
| 6291 || f->faces_changed) | |
| 6292 reset_face_cachels (w); | |
| 6293 else | |
| 6294 mark_face_cachels_as_not_updated (w); | |
| 6295 | |
| 6296 /* Ditto the glyph cache elements, although we do *not* invalidate | |
| 6297 the cache purely because glyphs have changed - this is now | |
| 6298 handled by the dirty flag.*/ | |
| 6299 if ((!echo_active && b != window_display_buffer (w)) | |
| 440 | 6300 || !Dynarr_length (w->glyph_cachels) || f->faces_changed) |
| 428 | 6301 reset_glyph_cachels (w); |
| 6302 else | |
| 6303 mark_glyph_cachels_as_not_updated (w); | |
| 6304 | |
| 6305 /* If the marker's buffer is not the window's buffer, then we need | |
| 6306 to find a new starting position. */ | |
| 6307 if (!MINI_WINDOW_P (w) | |
| 6308 && !EQ (Fmarker_buffer (w->start[CURRENT_DISP]), w->buffer)) | |
| 6309 { | |
| 6310 startp = regenerate_window_point_center (w, pointm, DESIRED_DISP); | |
| 6311 | |
| 6312 goto regeneration_done; | |
| 6313 } | |
| 6314 | |
| 6315 if (echo_active) | |
| 6316 { | |
| 6317 old_startp = marker_position (w->start[CURRENT_DISP]); | |
| 6318 startp = 1; | |
| 6319 } | |
| 6320 else | |
| 6321 { | |
| 6322 startp = marker_position (w->start[CURRENT_DISP]); | |
| 6323 if (startp < BUF_BEGV (b)) | |
| 6324 startp = BUF_BEGV (b); | |
| 6325 else if (startp > BUF_ZV (b)) | |
| 6326 startp = BUF_ZV (b); | |
| 6327 } | |
| 6328 Fset_marker (w->start[DESIRED_DISP], make_int (startp), the_buffer); | |
| 6329 | |
| 6330 truncation_changed = (find_window_mirror (w)->truncate_win != | |
| 647 | 6331 (unsigned int) window_truncation_on (w)); |
| 428 | 6332 |
| 6333 /* If w->force_start is set, then some function set w->start and we | |
| 6334 should display from there and change point, if necessary, to | |
| 6335 ensure that it is visible. */ | |
| 6336 if (w->force_start || inactive_minibuffer) | |
| 6337 { | |
| 6338 w->force_start = 0; | |
| 6339 w->last_modified[DESIRED_DISP] = Qzero; | |
| 6340 w->last_facechange[DESIRED_DISP] = Qzero; | |
| 6341 | |
| 6342 regenerate_window (w, startp, pointm, DESIRED_DISP); | |
| 6343 | |
| 6344 if (!point_visible (w, pointm, DESIRED_DISP) && !inactive_minibuffer) | |
| 6345 { | |
| 6346 pointm = point_at_center (w, DESIRED_DISP, 0, 0); | |
| 6347 | |
| 6348 if (selected_globally) | |
| 6349 BUF_SET_PT (b, pointm); | |
| 6350 | |
| 6351 Fset_marker (w->pointm[DESIRED_DISP], make_int (pointm), | |
| 6352 the_buffer); | |
| 6353 | |
| 6354 /* #### BUFU amounts of overkill just to get the cursor | |
| 4187 | 6355 location marked properly. FIX ME FIX ME FIX ME */ |
| 428 | 6356 regenerate_window (w, startp, pointm, DESIRED_DISP); |
| 6357 } | |
| 6358 | |
| 6359 goto regeneration_done; | |
| 6360 } | |
| 6361 | |
| 6362 /* If nothing has changed since the last redisplay, then we just | |
| 6363 need to make sure that point is still visible. */ | |
| 6364 if (XINT (w->last_modified[CURRENT_DISP]) >= BUF_MODIFF (b) | |
| 6365 && XINT (w->last_facechange[CURRENT_DISP]) >= BUF_FACECHANGE (b) | |
| 6366 && pointm >= startp | |
| 6367 /* This check is to make sure we restore the minibuffer after a | |
| 4187 | 6368 temporary change to the echo area. */ |
| 428 | 6369 && !(MINI_WINDOW_P (w) && f->buffers_changed) |
| 6370 && !f->frame_changed | |
| 6371 && !truncation_changed | |
| 442 | 6372 /* check whether start is really at the beginning of a line GE */ |
| 428 | 6373 && (!w->start_at_line_beg || beginning_of_line_p (b, startp)) |
| 6374 ) | |
| 6375 { | |
| 6376 /* Check if the cursor has actually moved. */ | |
| 6377 if (EQ (Fmarker_buffer (w->last_point[CURRENT_DISP]), w->buffer) | |
| 6378 && pointm == marker_position (w->last_point[CURRENT_DISP]) | |
| 6379 && selected_globally | |
| 6380 && !w->windows_changed | |
| 6381 && !f->clip_changed | |
| 6382 && !f->extents_changed | |
| 6383 && !f->faces_changed | |
| 6384 && !f->glyphs_changed | |
| 6385 && !f->subwindows_changed | |
| 442 | 6386 /* && !f->subwindows_state_changed*/ |
| 428 | 6387 && !f->point_changed |
| 6388 && !f->windows_structure_changed) | |
| 6389 { | |
| 6390 /* If not, we're done. */ | |
| 6391 if (f->modeline_changed) | |
| 6392 regenerate_modeline (w); | |
| 6393 | |
| 6394 skip_output = 1; | |
| 6395 goto regeneration_done; | |
| 6396 } | |
| 6397 else | |
| 6398 { | |
| 6399 /* If the new point is visible in the redisplay structures, | |
| 4187 | 6400 then let the output update routines handle it, otherwise |
| 6401 do things the hard way. */ | |
| 428 | 6402 if (!w->windows_changed |
| 6403 && !f->clip_changed | |
| 6404 && !f->extents_changed | |
| 6405 && !f->faces_changed | |
| 6406 && !f->glyphs_changed | |
| 6407 && !f->subwindows_changed | |
| 442 | 6408 /* && !f->subwindows_state_changed*/ |
| 428 | 6409 && !f->windows_structure_changed) |
| 6410 { | |
| 6411 if (point_visible (w, pointm, CURRENT_DISP) | |
| 6412 && w->last_point_x[CURRENT_DISP] != -1 | |
| 6413 && w->last_point_y[CURRENT_DISP] != -1) | |
| 6414 { | |
| 6415 if (redisplay_move_cursor (w, pointm, FRAME_TTY_P (f))) | |
| 6416 { | |
| 6417 /* Always regenerate in case it is displaying | |
| 4187 | 6418 the current line or column. */ |
| 428 | 6419 regenerate_modeline (w); |
| 6420 | |
| 6421 skip_output = 1; | |
| 6422 goto regeneration_done; | |
| 6423 } | |
| 6424 } | |
| 6425 else if (!selected_in_its_frame && !f->point_changed) | |
| 6426 { | |
| 6427 if (f->modeline_changed) | |
| 6428 regenerate_modeline (w); | |
| 6429 | |
| 6430 skip_output = 1; | |
| 6431 goto regeneration_done; | |
| 6432 } | |
| 6433 } | |
| 6434 | |
| 6435 /* If we weren't able to take the shortcut method, then use | |
| 4187 | 6436 the brute force method. */ |
| 428 | 6437 regenerate_window (w, startp, pointm, DESIRED_DISP); |
| 6438 | |
| 6439 if (point_visible (w, pointm, DESIRED_DISP)) | |
| 6440 goto regeneration_done; | |
| 6441 } | |
| 6442 } | |
| 6443 | |
| 6444 /* Check if the starting point is no longer at the beginning of a | |
| 6445 line, in which case find a new starting point. We also recenter | |
| 6446 if our start position is equal to point-max. Otherwise we'll end | |
| 6447 up with a blank window. */ | |
| 6448 else if (((w->start_at_line_beg || MINI_WINDOW_P (w)) | |
| 6449 && !(startp == BUF_BEGV (b) | |
| 6450 || BUF_FETCH_CHAR (b, startp - 1) == '\n')) | |
| 6451 || (pointm == startp && | |
| 6452 EQ (Fmarker_buffer (w->last_start[CURRENT_DISP]), w->buffer) && | |
| 6453 startp < marker_position (w->last_start[CURRENT_DISP])) | |
| 6454 || (startp == BUF_ZV (b))) | |
| 6455 { | |
| 6456 startp = regenerate_window_point_center (w, pointm, DESIRED_DISP); | |
| 6457 | |
| 6458 goto regeneration_done; | |
| 6459 } | |
| 6460 /* See if we can update the data structures locally based on | |
| 6461 knowledge of what changed in the buffer. */ | |
| 6462 else if (!w->windows_changed | |
| 6463 && !f->clip_changed | |
| 6464 && !f->faces_changed | |
| 6465 && !f->glyphs_changed | |
| 6466 && !f->subwindows_changed | |
| 442 | 6467 /* && !f->subwindows_state_changed*/ |
| 428 | 6468 && !f->windows_structure_changed |
| 6469 && !f->frame_changed | |
| 6470 && !truncation_changed | |
| 6471 && pointm >= startp | |
| 6472 && regenerate_window_incrementally (w, startp, pointm)) | |
| 6473 { | |
| 6474 if (f->modeline_changed | |
| 6475 || XINT (w->last_modified[CURRENT_DISP]) < BUF_MODIFF (b) | |
| 6476 || XINT (w->last_facechange[CURRENT_DISP]) < BUF_FACECHANGE (b)) | |
| 6477 regenerate_modeline (w); | |
| 6478 | |
| 6479 skip_output = 1; | |
| 6480 goto regeneration_done; | |
| 6481 } | |
| 6482 /* #### This is where a check for structure based scrolling would go. */ | |
| 6483 /* If all else fails, try just regenerating and see what happens. */ | |
| 6484 else | |
| 6485 { | |
| 6486 regenerate_window (w, startp, pointm, DESIRED_DISP); | |
| 6487 | |
| 6488 if (point_visible (w, pointm, DESIRED_DISP)) | |
| 6489 goto regeneration_done; | |
| 6490 } | |
| 6491 | |
| 6492 /* We still haven't gotten the window regenerated with point | |
| 6493 visible. Next we try scrolling a little and see if point comes | |
| 6494 back onto the screen. */ | |
| 6495 if (scroll_step > 0) | |
| 6496 { | |
| 6497 int scrolled = scroll_conservatively; | |
| 6498 for (; scrolled >= 0; scrolled -= scroll_step) | |
| 6499 { | |
| 6500 startp = vmotion (w, startp, | |
| 6501 (pointm < startp) ? -scroll_step : scroll_step, 0); | |
| 6502 regenerate_window (w, startp, pointm, DESIRED_DISP); | |
| 6503 | |
| 6504 if (point_visible (w, pointm, DESIRED_DISP)) | |
| 6505 goto regeneration_done; | |
| 6506 } | |
| 6507 } | |
| 6508 | |
| 6509 /* We still haven't managed to get the screen drawn with point on | |
| 6510 the screen, so just center it and be done with it. */ | |
| 6511 startp = regenerate_window_point_center (w, pointm, DESIRED_DISP); | |
| 6512 | |
| 6513 | |
| 6514 regeneration_done: | |
| 6515 | |
| 6516 /* If the window's frame is changed then reset the current display | |
| 6517 lines in order to force a full repaint. */ | |
| 6518 if (f->frame_changed) | |
| 6519 { | |
| 6520 display_line_dynarr *cla = window_display_lines (w, CURRENT_DISP); | |
| 6521 | |
| 6522 Dynarr_reset (cla); | |
| 6523 } | |
| 6524 | |
| 6525 /* Must do this before calling redisplay_output_window because it | |
| 6526 sets some markers on the window. */ | |
| 6527 if (echo_active) | |
| 6528 { | |
| 6529 w->buffer = old_buffer; | |
| 6530 Fset_marker (w->pointm[DESIRED_DISP], make_int (old_pointm), old_buffer); | |
| 6531 Fset_marker (w->start[DESIRED_DISP], make_int (old_startp), old_buffer); | |
| 6532 } | |
| 6533 | |
| 6534 /* These also have to be set before calling redisplay_output_window | |
| 6535 since it sets the CURRENT_DISP values based on them. */ | |
| 6536 w->last_modified[DESIRED_DISP] = make_int (BUF_MODIFF (b)); | |
| 6537 w->last_facechange[DESIRED_DISP] = make_int (BUF_FACECHANGE (b)); | |
| 6538 Fset_marker (w->last_start[DESIRED_DISP], make_int (startp), w->buffer); | |
| 6539 Fset_marker (w->last_point[DESIRED_DISP], make_int (pointm), w->buffer); | |
| 6540 | |
| 6541 if (!skip_output) | |
| 6542 { | |
| 665 | 6543 Charbpos start = marker_position (w->start[DESIRED_DISP]); |
| 6544 Charbpos end = (w->window_end_pos[DESIRED_DISP] == -1 | |
| 428 | 6545 ? BUF_ZV (b) |
| 6546 : BUF_Z (b) - w->window_end_pos[DESIRED_DISP] - 1); | |
| 6547 /* Don't pollute the cache if not sure if we are correct */ | |
| 6548 if (w->start_at_line_beg) | |
| 6549 update_line_start_cache (w, start, end, pointm, 1); | |
| 6550 redisplay_output_window (w); | |
| 6551 /* | |
| 6552 * If we just displayed the echo area, the line start cache is | |
| 6553 * no longer valid, because the minibuffer window is associated | |
| 6554 * with the window now. | |
| 6555 */ | |
| 6556 if (echo_active) | |
| 6557 w->line_cache_last_updated = make_int (-1); | |
| 6558 } | |
| 6559 | |
| 6560 /* #### This should be dependent on face changes and will need to be | |
| 6561 somewhere else once tty updates occur on a per-frame basis. */ | |
| 6562 mark_face_cachels_as_clean (w); | |
| 6563 | |
| 438 | 6564 /* The glyph cachels only get dirty if someone changed something. |
| 6565 Since redisplay has now effectively ended we can reset the dirty | |
| 6566 flag since everything must be up-to-date. */ | |
| 428 | 6567 if (glyphs_changed) |
| 6568 mark_glyph_cachels_as_clean (w); | |
| 6569 | |
| 6570 w->windows_changed = 0; | |
| 6571 } | |
| 6572 | |
| 6573 /* Call buffer_reset_changes for all buffers present in any window | |
| 6574 currently visible in all frames on all devices. #### There has to | |
| 6575 be a better way to do this. */ | |
| 6576 | |
| 6577 static int | |
| 2286 | 6578 reset_buffer_changes_mapfun (struct window *w, void *UNUSED (closure)) |
| 428 | 6579 { |
| 6580 buffer_reset_changes (XBUFFER (w->buffer)); | |
| 6581 return 0; | |
| 6582 } | |
| 6583 | |
| 6584 static void | |
| 6585 reset_buffer_changes (void) | |
| 6586 { | |
| 6587 Lisp_Object frmcons, devcons, concons; | |
| 6588 | |
| 6589 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons) | |
| 6590 { | |
| 6591 struct frame *f = XFRAME (XCAR (frmcons)); | |
| 6592 | |
| 6593 if (FRAME_REPAINT_P (f)) | |
| 6594 map_windows (f, reset_buffer_changes_mapfun, 0); | |
| 6595 } | |
| 6596 } | |
| 6597 | |
| 6598 /* Ensure that all windows underneath the given window in the window | |
| 6599 hierarchy are correctly displayed. */ | |
| 6600 | |
| 6601 static void | |
| 6602 redisplay_windows (Lisp_Object window, int skip_selected) | |
| 6603 { | |
| 6604 for (; !NILP (window) ; window = XWINDOW (window)->next) | |
| 6605 { | |
| 6606 redisplay_window (window, skip_selected); | |
| 6607 } | |
| 6608 } | |
| 6609 | |
| 1318 | 6610 /* Register an action to be called at the end of redisplay. |
| 6611 in_display is 0 when this is called. | |
| 6612 This is used when it is discovered that an action needs to be taken, | |
| 6613 but it's during redisplay, so it's not safe. (Typically, it's an action | |
| 6614 that needs to enter redisplay, which can't happen reentrantly.) | |
| 6615 | |
| 6616 NEVER signal an error in these functions. | |
| 6617 */ | |
| 6618 | |
| 6619 void | |
| 6620 register_post_redisplay_action (void (*fun) (Lisp_Object), Lisp_Object arg) | |
| 6621 { | |
| 6622 Vpost_redisplay_actions = nconc2 (Vpost_redisplay_actions, | |
| 6623 list1 (Fcons (make_opaque_ptr | |
| 6624 ((void *) fun), arg))); | |
| 6625 } | |
| 6626 | |
| 1320 | 6627 static int running_post_redisplay_actions; |
| 6628 | |
| 1318 | 6629 static void |
| 6630 run_post_redisplay_actions (void) | |
| 6631 { | |
| 1320 | 6632 int depth; |
| 6633 | |
| 6634 if (running_post_redisplay_actions) | |
| 6635 return; | |
| 6636 | |
| 6637 depth = internal_bind_int (&running_post_redisplay_actions, 1); | |
| 6638 /* If the function pushes further actions, they will be tacked onto | |
| 6639 the end of the list, and we'll run them when we're done with the | |
| 6640 current ones. */ | |
| 1318 | 6641 while (!NILP (Vpost_redisplay_actions)) |
| 6642 { | |
| 6643 Lisp_Object car = XCAR (Vpost_redisplay_actions); | |
| 6644 void (*fun) (Lisp_Object) = | |
| 6645 (void (*)(Lisp_Object)) get_opaque_ptr (XCAR (car)); | |
| 6646 (*fun) (XCDR (car)); | |
| 6647 free_opaque_ptr (XCAR (car)); | |
| 6648 free_cons (car); | |
| 6649 Vpost_redisplay_actions = XCDR (Vpost_redisplay_actions); | |
| 6650 } | |
| 1320 | 6651 unbind_to (depth); |
| 1318 | 6652 } |
| 6653 | |
| 6654 #ifdef ERROR_CHECK_TRAPPING_PROBLEMS | |
| 6655 | |
| 6656 static Lisp_Object | |
| 2286 | 6657 commit_ritual_suicide (Lisp_Object UNUSED (ceci_nest_pas_une_pipe)) |
| 1318 | 6658 { |
| 6659 assert (!in_display); | |
| 6660 return Qnil; | |
| 6661 } | |
| 6662 | |
| 6663 #endif | |
| 6664 | |
| 6665 /* Within the guts of redisplay, we are defenseless and cannot allow any of | |
| 6666 the following to happen: | |
| 6667 | |
| 6668 1) garbage collection | |
| 6669 2) QUIT | |
| 6670 3) any non-local exits | |
| 6671 4) frame size changes | |
| 6672 5) deletion of any buffers, windows, frames, etc. | |
| 6673 6) modification of buffer text | |
| 6674 7) reentrant entry of redisplay (see the stack trace above | |
| 6675 generate_displayable_area()) | |
| 6676 | |
| 6677 The general reason is that the redisplay code is written to assume that | |
| 6678 it is the only code running, and thus (a) cannot tolerate structures | |
| 6679 changed out from under it (hence 1, 4, 5, 6, 7) and (b) at various points | |
| 6680 within redisplay the redisplay structures may be in an inconsistent | |
| 6681 state and there are no unwind-protects to clean the structures up in | |
| 6682 case of non-local exit (hence 2, 3). Fixing redisplay to address these | |
| 6683 issues is hard and perhaps not worth it (and might slow things down a | |
| 6684 fair amount). We address 1, 4, 5 and 6 ourselves inside of | |
| 6685 enter_redisplay_critical_section() by simply inhibiting them, but we | |
| 6686 cannot handle 2 and 3, which must be handled at the actual point where | |
| 6687 they may occur (especially, internal_equal() or any place that may call | |
| 6688 Lisp), by wrapping the code in call_trapping_problems() or | |
| 6689 call_with_suspended_errors(). [[ NOTE: We could address QUIT by inhibiting | |
| 6690 it but this would be anti-social because it would prevent the user from | |
| 6691 interrupting any Lisp code called within the critical section. With the | |
| 6692 call_*() wrapping, C-g will interrupt the Lisp code and throw back to | |
| 6693 the innermost wrapping. ]] In fact we do turn off QUIT handling, since | |
| 6694 it's just too dangerous otherwise. See below. | |
| 6695 | |
| 6696 Code calling enter_redisplay_critical_section() must check for reentrancy | |
| 6697 (#7) and take appropriate corrective action. | |
| 6698 | |
| 6699 To help debug potential problems, we arrange (when | |
| 6700 ERROR_CHECK_TRAPPING_PROBLEMS is set) to crash automatically every time | |
| 6701 we execute QUIT or call Lisp code unless proper wrapping is in place, as | |
| 6702 well as further checks when we actually Fsignal(), Fthrow(), | |
| 6703 garbage_collect_1(). | |
| 6704 | |
| 6705 #### If a frame-size change does occur we should probably actually be | |
| 6706 preempting redisplay. */ | |
| 6707 | |
| 6708 /* Count of number of recursive times we call | |
| 6709 enter_redisplay_critical_section() or | |
| 6710 enter_redisplay_critical_section_maybe(). | |
| 6711 enter_redisplay_critical_section() cannot occur reentrantly but we have | |
| 6712 to know in the *maybe() version whether to exit the section when we're | |
| 6713 done. */ | |
| 6714 static int in_display_nesting; | |
| 6715 | |
| 6716 static Lisp_Object | |
| 2286 | 6717 end_hold_frame_size_changes (Lisp_Object UNUSED (obj)) |
| 1318 | 6718 { |
| 6719 if (!hold_frame_size_changes) | |
| 6720 { | |
| 6721 /* we used to have a function to do this for only one frame, and | |
| 6722 it was typical to call it at the end of a critical section | |
| 6723 (which occurs once per frame); but what then happens if multiple | |
| 6724 frames have frame changes held up? | |
| 4187 | 6725 |
| 1318 | 6726 This means we are O(N^2) over frames. I seriously doubt it matters. |
| 6727 --ben */ | |
| 6728 Lisp_Object frmcons, devcons, concons; | |
| 4187 | 6729 |
| 1318 | 6730 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons) |
| 6731 { | |
| 6732 struct frame *f = XFRAME (XCAR (frmcons)); | |
| 6733 if (f->size_change_pending) | |
| 6734 change_frame_size (f, f->new_height, f->new_width, 0); | |
| 6735 } | |
| 6736 } | |
| 6737 return Qnil; | |
| 6738 } | |
| 6739 | |
| 6740 /* Call this to temporarily prevent frame-size changes from being processed. | |
| 6741 To undo, use unbind_to(), passing it the value returned by this function. | |
| 6742 */ | |
| 6743 | |
| 6744 int | |
| 6745 begin_hold_frame_size_changes (void) | |
| 6746 { | |
| 6747 int depth = specpdl_depth (); | |
| 6748 record_unwind_protect (end_hold_frame_size_changes, Qnil); | |
| 6749 internal_bind_int (&hold_frame_size_changes, 1 + hold_frame_size_changes); | |
| 6750 return depth; | |
| 6751 } | |
| 6752 | |
| 6753 int | |
| 6754 enter_redisplay_critical_section (void) | |
| 6755 { | |
| 6756 int depth = specpdl_depth (); | |
| 6757 | |
| 6758 /* Reentrant entry is deadly. The calling function must check for this. */ | |
| 6759 assert (!in_display); | |
| 6760 begin_hold_frame_size_changes (); | |
| 6761 /* Make sure in_display gets reset, but don't set it yet so that | |
| 6762 commit_ritual_suicide() can be used. */ | |
| 6763 internal_bind_int (&in_display, 0); | |
| 6764 internal_bind_int (&in_display_nesting, 1 + in_display_nesting); | |
| 6765 #ifdef ERROR_CHECK_TRAPPING_PROBLEMS | |
| 6766 /* Force every call to QUIT to check for in_displayness. This will | |
| 6767 verify proper wrapping, as in the previous comment, aborting if not. */ | |
| 6768 something_happened++; | |
| 6769 /* Verify that no nonlocal exits blow past us. */ | |
| 6770 record_unwind_protect (commit_ritual_suicide, Qnil); | |
| 6771 #endif | |
| 6772 in_display++; | |
| 6773 | |
| 6774 set_trapping_problems_flags (INHIBIT_ANY_CHANGE_AFFECTING_REDISPLAY); | |
| 6775 /* Even checking for QUIT can cause arbitrary Lisp code to be executed, | |
| 6776 e.g. through a menu handler. We really don't want that happening | |
| 6777 inside of redisplay. Code that we `eval' is at least written with the | |
| 6778 expectation that it's inside of redisplay, and shouldn't try anything | |
| 6779 weird; but that's not the case for menu code (e.g. custom loads huge | |
| 6780 amounts of LISP FILES from a menu handler! FMH!). Safest just to turn | |
| 6781 this off. We could turn it on using UNINHIBIT_QUIT or | |
| 6782 begin_do_check_for_quit() in certain places if we want, if we know | |
| 6783 it's not in an especially tricky place. */ | |
| 6784 begin_dont_check_for_quit (); | |
| 6785 return depth; | |
| 6786 } | |
| 6787 | |
| 6788 void | |
| 6789 exit_redisplay_critical_section (int depth) | |
| 6790 { | |
| 6791 in_display--; | |
| 6792 assert (!in_display); | |
| 6793 unbind_to (depth); | |
| 6794 | |
| 6795 run_post_redisplay_actions (); | |
| 6796 } | |
| 6797 | |
| 6798 /* Enter the redisplay critical section if we're not already in it. This | |
| 6799 is for code that needs frame changes held up and other protections from | |
| 6800 being inside, but doesn't modify the redisplay structures, and doesn't | |
| 6801 look at them in a way that they will be confused by inconsistencies. */ | |
| 6802 | |
| 6803 int | |
| 6804 enter_redisplay_critical_section_maybe (void) | |
| 6805 { | |
| 6806 if (!in_display) | |
| 6807 return enter_redisplay_critical_section (); | |
| 6808 else | |
| 6809 return internal_bind_int (&in_display_nesting, 1 + in_display_nesting); | |
| 6810 } | |
| 6811 | |
| 6812 void | |
| 6813 exit_redisplay_critical_section_maybe (int depth) | |
| 6814 { | |
| 6815 if (in_display_nesting == 1) | |
| 6816 exit_redisplay_critical_section (depth); | |
| 6817 else | |
| 6818 unbind_to (depth); | |
| 6819 } | |
| 6820 | |
| 1279 | 6821 /* Ensure that all windows on the given frame are correctly displayed. |
| 6822 Return non-zero if pre-empted. */ | |
| 428 | 6823 |
| 442 | 6824 int |
| 428 | 6825 redisplay_frame (struct frame *f, int preemption_check) |
| 6826 { | |
| 6827 struct device *d = XDEVICE (f->device); | |
| 853 | 6828 int depth; |
| 428 | 6829 |
| 1279 | 6830 assert (f->init_finished); |
| 6831 | |
| 1318 | 6832 /* NOTE: Without sufficient checks for stream frames, we got weird |
| 6833 crashes in pdump. These came and went very easily -- adding the | |
| 6834 critical-section code for redisplay was enough to trigger them. | |
| 6835 Perhaps I should have debugged them but there didn't seem to be any | |
| 6836 point. --ben */ | |
| 1279 | 6837 if (FRAME_STREAM_P (f)) /* nothing to do */ |
| 6838 return 0; | |
| 6839 | |
| 1318 | 6840 /* Reentrancy into redisplay can be deadly. See stack trace above |
| 6841 generate_displayable_area(). */ | |
| 6842 if (in_display) | |
| 6843 return 1; | |
| 6844 | |
| 545 | 6845 if (preemption_check |
| 6846 && !DEVICE_IMPL_FLAG (d, XDEVIMPF_DONT_PREEMPT_REDISPLAY)) | |
| 428 | 6847 { |
| 6848 /* The preemption check itself takes a lot of time, | |
| 6849 so normally don't do it here. We do it if called | |
| 6850 from Lisp, though (`redisplay-frame'). */ | |
| 6851 int preempted; | |
| 6852 | |
| 6853 REDISPLAY_PREEMPTION_CHECK; | |
| 6854 if (preempted) | |
| 6855 return 1; | |
| 6856 } | |
| 6857 | |
| 442 | 6858 if (!internal_equal (f->old_buffer_alist, f->buffer_alist, 0)) |
| 6859 { | |
| 6860 Lisp_Object frame; | |
| 6861 | |
| 6862 f->old_buffer_alist = Freplace_list (f->old_buffer_alist, | |
| 6863 f->buffer_alist); | |
| 793 | 6864 frame = wrap_frame (f); |
| 442 | 6865 va_run_hook_with_args (Qbuffer_list_changed_hook, 1, frame); |
| 6866 } | |
| 6867 | |
| 428 | 6868 /* Before we put a hold on frame size changes, attempt to process |
| 6869 any which are already pending. */ | |
| 6870 if (f->size_change_pending) | |
| 6871 change_frame_size (f, f->new_height, f->new_width, 0); | |
| 6872 | |
| 6873 /* If frame size might need to be changed, due to changed size | |
| 6874 of toolbars, scrollbars etc, change it now */ | |
| 6875 if (f->size_slipped) | |
| 6876 { | |
| 6877 adjust_frame_size (f); | |
| 6878 assert (!f->size_slipped); | |
| 6879 } | |
| 6880 | |
| 1318 | 6881 /* The menubar, toolbar, and icon updates should be done before |
| 853 | 6882 enter_redisplay_critical_section is called and we are officially |
| 3025 | 6883 `in_display'. They is because they tend to eval Lisp code, which |
| 1318 | 6884 needs to be carefully wrapped within the critical section (and hence |
| 6885 is difficult to debug). */ | |
| 428 | 6886 |
| 6887 #ifdef HAVE_MENUBARS | |
| 6888 /* Update the menubar. It is done first since it could change | |
| 6889 the menubar's visibility. This way we avoid having flashing | |
| 6890 caused by an Expose event generated by the visibility change | |
| 6891 being handled. */ | |
| 6892 update_frame_menubars (f); | |
| 6893 #endif /* HAVE_MENUBARS */ | |
| 6894 #ifdef HAVE_TOOLBARS | |
| 905 | 6895 /* Update the toolbars geometry. We don't update the toolbars |
| 6896 themselves at this point since the space they are trying to | |
| 6897 occupy may currently by occupied by gutter elements. Instead we | |
| 6898 update the geometry, then update the gutter geometry, then update | |
| 6899 the gutters - which will cause mapped windows to be repositioned | |
| 6900 - and finally update the toolbars. */ | |
| 6901 update_frame_toolbars_geometry (f); | |
| 428 | 6902 #endif /* HAVE_TOOLBARS */ |
| 442 | 6903 /* Gutter update proper has to be done inside display when no frame |
| 6904 size changes can occur, thus we separately update the gutter | |
| 6905 geometry here if it needs it. */ | |
| 6906 update_frame_gutter_geometry (f); | |
| 428 | 6907 |
| 6908 /* If we clear the frame we have to force its contents to be redrawn. */ | |
| 6909 if (f->clear) | |
| 6910 f->frame_changed = 1; | |
| 6911 | |
| 442 | 6912 /* Invalidate the subwindow caches. We use subwindows_changed here |
| 6913 to cause subwindows to get instantiated. This is because | |
| 428 | 6914 subwindows_state_changed is less strict - dealing with things |
| 6915 like the clicked state of button. We have to do this before | |
| 6916 redisplaying the gutters as subwindows get unmapped in the | |
| 6917 process.*/ | |
| 442 | 6918 if (f->frame_changed) |
| 6919 reset_frame_subwindow_instance_cache (f); | |
| 6920 | |
| 6921 if (f->frame_changed || f->subwindows_changed) | |
| 6922 { | |
| 428 | 6923 /* we have to do this so the gutter gets regenerated. */ |
| 6924 reset_gutter_display_lines (f); | |
| 6925 } | |
| 6926 | |
| 853 | 6927 depth = enter_redisplay_critical_section (); |
| 428 | 6928 |
| 6929 /* ----------------- BEGIN CRITICAL REDISPLAY SECTION ---------------- */ | |
| 1318 | 6930 |
| 6931 /* See comments in enter_redisplay_critical_section() */ | |
| 428 | 6932 |
| 442 | 6933 MAYBE_DEVMETH (d, frame_output_begin, (f)); |
| 6934 | |
| 6935 /* We can now update the gutters, safe in the knowledge that our | |
| 6936 efforts won't get undone. */ | |
| 6937 | |
| 6938 /* This can call lisp, but redisplay is protected by binding | |
| 6939 inhibit_quit. More importantly the code involving display lines | |
| 6940 *assumes* that GC will not happen and so does not GCPRO | |
| 6941 anything. Since we use this code the whole time with the gutters | |
| 1318 | 6942 we cannot allow GC to happen when manipulating the gutters. |
| 6943 | |
| 6944 This must be inside of the critical section for various reasons. | |
| 6945 For example, it messes with display structures, which be left in | |
| 6946 an inconsistent state. */ | |
| 442 | 6947 update_frame_gutters (f); |
| 6948 | |
| 428 | 6949 /* Erase the frame before outputting its contents. */ |
| 6950 if (f->clear) | |
| 6951 { | |
| 442 | 6952 MAYBE_DEVMETH (d, clear_frame, (f)); |
| 428 | 6953 } |
| 6954 | |
| 6955 /* Do the selected window first. */ | |
| 6956 redisplay_window (FRAME_SELECTED_WINDOW (f), 0); | |
| 6957 | |
| 6958 /* Then do the rest. */ | |
| 6959 redisplay_windows (f->root_window, 1); | |
| 6960 | |
| 442 | 6961 MAYBE_DEVMETH (d, frame_output_end, (f)); |
| 428 | 6962 |
| 6963 update_frame_title (f); | |
| 6964 | |
| 905 | 6965 #ifdef HAVE_TOOLBARS |
| 6966 /* Finally update the toolbars. It seems its possible to get in a | |
| 6967 cycle between updating the gutter and the toolbars. Basically we | |
| 6968 want to end up with both being up-to-date and this doesn't seem | |
| 6969 possible in a single pass. */ | |
| 6970 update_frame_toolbars (f); | |
| 6971 #endif /* HAVE_TOOLBARS */ | |
| 6972 | |
| 428 | 6973 CLASS_RESET_CHANGED_FLAGS (f); |
| 6974 f->window_face_cache_reset = 0; | |
| 6975 f->echo_area_garbaged = 0; | |
| 6976 f->clear = 0; | |
| 6977 | |
| 6978 if (!f->size_change_pending) | |
| 6979 f->size_changed = 0; | |
| 6980 | |
| 6981 /* ----------------- END CRITICAL REDISPLAY SECTION ---------------- */ | |
| 6982 | |
| 853 | 6983 /* Allow frame size changes to occur again. */ |
| 6984 exit_redisplay_critical_section (depth); | |
| 428 | 6985 |
| 6986 return 0; | |
| 6987 } | |
| 6988 | |
| 440 | 6989 /* Ensure that all frames on the given device are correctly displayed. |
| 6990 If AUTOMATIC is non-zero, and the device implementation indicates | |
| 6991 no automatic redisplay, as printers do, then the device is not | |
| 6992 redisplayed. AUTOMATIC is set to zero when called from lisp | |
| 6993 functions (redraw-device) and (redisplay-device), and to non-zero | |
| 6994 when called from "lazy" redisplay(); | |
| 6995 */ | |
| 428 | 6996 |
| 6997 static int | |
| 440 | 6998 redisplay_device (struct device *d, int automatic) |
| 428 | 6999 { |
| 7000 Lisp_Object frame, frmcons; | |
| 7001 int size_change_failed = 0; | |
| 7002 struct frame *f; | |
| 7003 | |
| 545 | 7004 if (automatic && DEVICE_IMPL_FLAG (d, XDEVIMPF_NO_AUTO_REDISPLAY)) |
| 440 | 7005 return 0; |
| 7006 | |
| 428 | 7007 if (DEVICE_STREAM_P (d)) /* nothing to do */ |
| 7008 return 0; | |
| 7009 | |
| 7010 /* It is possible that redisplay has been called before the | |
| 545 | 7011 device is fully initialized, or that the console implementation |
| 7012 allows frameless devices. If so then continue with the next | |
| 7013 device. */ | |
| 428 | 7014 if (NILP (DEVICE_SELECTED_FRAME (d))) |
| 7015 return 0; | |
| 7016 | |
| 545 | 7017 if (!DEVICE_IMPL_FLAG (d, XDEVIMPF_DONT_PREEMPT_REDISPLAY)) |
| 7018 { | |
| 7019 int preempted; | |
| 7020 REDISPLAY_PREEMPTION_CHECK; | |
| 7021 if (preempted) | |
| 7022 return 1; | |
| 7023 } | |
| 428 | 7024 |
| 7025 /* Always do the selected frame first. */ | |
| 7026 frame = DEVICE_SELECTED_FRAME (d); | |
| 7027 | |
| 7028 f = XFRAME (frame); | |
| 7029 | |
| 7030 if (f->icon_changed || f->windows_changed) | |
| 7031 update_frame_icon (f); | |
| 7032 | |
| 7033 if (FRAME_REPAINT_P (f)) | |
| 7034 { | |
| 7035 if (CLASS_REDISPLAY_FLAGS_CHANGEDP(f)) | |
| 7036 { | |
| 588 | 7037 int preempted = redisplay_frame (f, 1); |
| 545 | 7038 if (preempted) |
| 7039 return 1; | |
| 7040 } | |
| 428 | 7041 |
| 7042 /* If the frame redisplay did not get preempted, then this flag | |
| 4187 | 7043 should have gotten set to 0. It might be possible for that |
| 7044 not to happen if a size change event were to occur at an odd | |
| 7045 time. To make sure we don't miss anything we simply don't | |
| 7046 reset the top level flags until the condition ends up being | |
| 7047 in the right state. */ | |
| 428 | 7048 if (f->size_changed) |
| 7049 size_change_failed = 1; | |
| 7050 } | |
| 7051 | |
| 7052 DEVICE_FRAME_LOOP (frmcons, d) | |
| 7053 { | |
| 7054 f = XFRAME (XCAR (frmcons)); | |
| 7055 | |
| 7056 if (f == XFRAME (DEVICE_SELECTED_FRAME (d))) | |
| 7057 continue; | |
| 7058 | |
| 7059 if (f->icon_changed || f->windows_changed) | |
| 7060 update_frame_icon (f); | |
| 7061 | |
| 7062 if (FRAME_REPAINT_P (f)) | |
| 7063 { | |
| 430 | 7064 if (CLASS_REDISPLAY_FLAGS_CHANGEDP (f)) |
| 428 | 7065 { |
| 588 | 7066 int preempted = redisplay_frame (f, 1); |
| 545 | 7067 if (preempted) |
| 7068 return 1; | |
| 428 | 7069 } |
| 7070 | |
| 7071 if (f->size_change_pending) | |
| 7072 size_change_failed = 1; | |
| 7073 } | |
| 7074 } | |
| 7075 | |
| 7076 /* If we get here then we redisplayed all of our frames without | |
| 7077 getting preempted so mark ourselves as clean. */ | |
| 7078 CLASS_RESET_CHANGED_FLAGS (d); | |
| 7079 | |
| 7080 if (!size_change_failed) | |
| 7081 d->size_changed = 0; | |
| 7082 | |
| 7083 return 0; | |
| 7084 } | |
| 7085 | |
| 7086 /* Ensure that all windows on all frames on all devices are displaying | |
| 7087 the current contents of their respective buffers. */ | |
| 7088 | |
| 7089 static void | |
| 7090 redisplay_without_hooks (void) | |
| 7091 { | |
| 7092 Lisp_Object devcons, concons; | |
| 7093 int size_change_failed = 0; | |
| 1292 | 7094 PROFILE_DECLARE (); |
| 7095 | |
| 7096 PROFILE_RECORD_ENTERING_SECTION (QSin_redisplay); | |
| 428 | 7097 |
| 7098 if (asynch_device_change_pending) | |
| 7099 handle_asynch_device_change (); | |
| 7100 | |
| 7101 if (!GLOBAL_REDISPLAY_FLAGS_CHANGEDP && | |
| 430 | 7102 !disable_preemption && preemption_count < max_preempts) |
| 428 | 7103 goto done; |
| 7104 | |
| 7105 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
| 7106 { | |
| 7107 struct device *d = XDEVICE (XCAR (devcons)); | |
| 7108 int preempted; | |
| 7109 | |
| 430 | 7110 if (CLASS_REDISPLAY_FLAGS_CHANGEDP (d)) |
| 428 | 7111 { |
| 440 | 7112 preempted = redisplay_device (d, 1); |
| 428 | 7113 |
| 7114 if (preempted) | |
| 7115 { | |
| 7116 preemption_count++; | |
| 7117 RESET_CHANGED_SET_FLAGS; | |
| 7118 goto done; | |
| 7119 } | |
| 7120 | |
| 7121 /* See comment in redisplay_device. */ | |
| 7122 if (d->size_changed) | |
| 7123 size_change_failed = 1; | |
| 7124 } | |
| 7125 } | |
| 7126 preemption_count = 0; | |
| 7127 | |
| 7128 /* Mark redisplay as accurate */ | |
| 7129 GLOBAL_RESET_CHANGED_FLAGS; | |
| 7130 RESET_CHANGED_SET_FLAGS; | |
| 7131 | |
| 7132 if (faces_changed) | |
| 7133 { | |
| 7134 mark_all_faces_as_clean (); | |
| 7135 faces_changed = 0; | |
| 7136 } | |
| 7137 | |
| 7138 if (!size_change_failed) | |
| 7139 size_changed = 0; | |
| 7140 | |
| 7141 reset_buffer_changes (); | |
| 7142 | |
| 7143 done: | |
| 800 | 7144 #ifdef ERROR_CHECK_DISPLAY |
| 7145 sledgehammer_check_redisplay_structs (); | |
| 7146 #endif /* ERROR_CHECK_DISPLAY */ | |
| 1292 | 7147 |
| 7148 PROFILE_RECORD_EXITING_SECTION (QSin_redisplay); | |
| 428 | 7149 } |
| 7150 | |
| 1318 | 7151 /* Note: All places in the C code that call redisplay() are prepared to |
| 7152 handle GCing, which can happen from run_pre_idle_hook(). However, we | |
| 7153 can't currently handle GC inside the guts of redisplay; see | |
| 7154 enter_redisplay_critical_section(). | |
| 853 | 7155 |
| 7156 (#### What about other external entry points to the redisplay code? | |
| 7157 Someone should go through and make sure that all callers can handle | |
| 7158 GC there, too.) | |
| 7159 */ | |
| 7160 | |
| 428 | 7161 void |
| 7162 redisplay (void) | |
| 7163 { | |
| 853 | 7164 run_pre_idle_hook (); |
| 7165 redisplay_no_pre_idle_hook (); | |
| 7166 } | |
| 7167 | |
| 7168 void | |
| 7169 redisplay_no_pre_idle_hook (void) | |
| 7170 { | |
| 428 | 7171 if (last_display_warning_tick != display_warning_tick && |
| 7172 !inhibit_warning_display) | |
| 7173 { | |
| 7174 /* If an error occurs during this function, oh well. | |
| 4187 | 7175 If we report another warning, we could get stuck in an |
| 428 | 7176 infinite loop reporting warnings. */ |
| 853 | 7177 call0_trapping_problems |
| 7178 (0, Qdisplay_warning_buffer, | |
| 7179 INHIBIT_EXISTING_PERMANENT_DISPLAY_OBJECT_DELETION); | |
| 428 | 7180 last_display_warning_tick = display_warning_tick; |
| 7181 } | |
| 7182 | |
| 7183 redisplay_without_hooks (); | |
| 7184 } | |
| 7185 | |
| 853 | 7186 Lisp_Object |
| 7187 eval_within_redisplay (Lisp_Object dont_trust_this_damn_sucker) | |
| 7188 { | |
| 7189 return | |
| 7190 eval_in_buffer_trapping_problems | |
| 7191 ("Error calling function within redisplay", current_buffer, | |
| 1318 | 7192 dont_trust_this_damn_sucker, 0); |
| 853 | 7193 } |
| 428 | 7194 |
| 7195 /* Efficiently determine the window line number, and return a pointer | |
| 7196 to its printed representation. Do this regardless of whether | |
| 7197 line-number-mode is on. The first line in the buffer is counted as | |
| 7198 1. If narrowing is in effect, the lines are counted from the | |
| 7199 beginning of the visible portion of the buffer. */ | |
| 7200 static char * | |
| 7201 window_line_number (struct window *w, int type) | |
| 7202 { | |
| 7203 struct device *d = XDEVICE (XFRAME (w->frame)->device); | |
| 7204 struct buffer *b = XBUFFER (w->buffer); | |
| 7205 /* Be careful in the order of these tests. The first clause will | |
| 7206 fail if DEVICE_SELECTED_FRAME == Qnil (since w->frame cannot be). | |
| 7207 This can occur when the frame title is computed really early */ | |
| 665 | 7208 Charbpos pos = |
| 428 | 7209 ((EQ(DEVICE_SELECTED_FRAME(d), w->frame) && |
| 7210 (w == XWINDOW (FRAME_SELECTED_WINDOW (device_selected_frame(d)))) && | |
| 7211 EQ(DEVICE_CONSOLE(d), Vselected_console) && | |
| 7212 XDEVICE(CONSOLE_SELECTED_DEVICE(XCONSOLE(DEVICE_CONSOLE(d)))) == d ) | |
| 7213 ? BUF_PT (b) | |
| 7214 : marker_position (w->pointm[type])); | |
| 7215 EMACS_INT line; | |
| 7216 | |
| 7217 line = buffer_line_number (b, pos, 1); | |
| 7218 | |
| 603 | 7219 { |
| 7220 static char window_line_number_buf[DECIMAL_PRINT_SIZE (long)]; | |
| 7221 | |
| 7222 long_to_string (window_line_number_buf, line + 1); | |
| 7223 | |
| 7224 return window_line_number_buf; | |
| 7225 } | |
| 428 | 7226 } |
| 7227 | |
| 7228 | |
| 7229 /* Given a character representing an object in a modeline | |
| 7230 specification, return a string (stored into the global array | |
| 867 | 7231 `mode_spec_ibyte_string') with the information that object |
| 428 | 7232 represents. |
| 7233 | |
| 7234 This function is largely unchanged from previous versions of the | |
| 7235 redisplay engine. | |
| 7236 | |
| 7237 Warning! This code is also used for frame titles and can be called | |
| 7238 very early in the device/frame update process! JV | |
| 7239 */ | |
| 7240 | |
| 7241 static void | |
| 867 | 7242 decode_mode_spec (struct window *w, Ichar spec, int type) |
| 428 | 7243 { |
| 7244 Lisp_Object obj = Qnil; | |
| 442 | 7245 const char *str = NULL; |
| 428 | 7246 struct buffer *b = XBUFFER (w->buffer); |
| 7247 | |
| 867 | 7248 Dynarr_reset (mode_spec_ibyte_string); |
| 428 | 7249 |
| 7250 switch (spec) | |
| 7251 { | |
| 7252 /* print buffer name */ | |
| 7253 case 'b': | |
| 7254 obj = b->name; | |
| 7255 break; | |
| 7256 | |
| 7257 /* print visited file name */ | |
| 7258 case 'f': | |
| 7259 obj = b->filename; | |
| 7260 break; | |
| 7261 | |
| 7262 /* print the current column */ | |
| 7263 case 'c': | |
| 7264 { | |
| 4187 | 7265 Charbpos pt = (w == XWINDOW (Fselected_window (Qnil))) |
| 7266 ? BUF_PT (b) | |
| 7267 : marker_position (w->pointm[type]); | |
| 428 | 7268 int col = column_at_point (b, pt, 1) + !!column_number_start_at_one; |
| 603 | 7269 char buf[DECIMAL_PRINT_SIZE (long)]; |
| 428 | 7270 |
| 7271 long_to_string (buf, col); | |
| 7272 | |
| 867 | 7273 Dynarr_add_many (mode_spec_ibyte_string, |
| 7274 (const Ibyte *) buf, strlen (buf)); | |
| 428 | 7275 |
| 7276 goto decode_mode_spec_done; | |
| 7277 } | |
| 7278 /* print the file coding system */ | |
| 7279 case 'C': | |
| 7280 { | |
| 4187 | 7281 Lisp_Object codesys = b->buffer_file_coding_system; |
| 7282 /* Be very careful here not to get an error. */ | |
| 428 | 7283 if (NILP (codesys) || SYMBOLP (codesys) || CODING_SYSTEMP (codesys)) |
| 4187 | 7284 { |
| 7285 codesys = find_coding_system_for_text_file (codesys, 0); | |
| 428 | 7286 if (CODING_SYSTEMP (codesys)) |
| 4187 | 7287 obj = XCODING_SYSTEM_MNEMONIC (codesys); |
| 7288 } | |
| 428 | 7289 } |
| 7290 break; | |
| 7291 | |
| 7292 /* print the current line number */ | |
| 7293 case 'l': | |
| 7294 str = window_line_number (w, type); | |
| 7295 break; | |
| 7296 | |
| 7297 /* print value of mode-name (obsolete) */ | |
| 7298 case 'm': | |
| 7299 obj = b->mode_name; | |
| 7300 break; | |
| 7301 | |
| 7302 /* print hyphen and frame number, if != 1 */ | |
| 7303 case 'N': | |
| 7304 #ifdef HAVE_TTY | |
| 7305 { | |
| 7306 struct frame *f = XFRAME (w->frame); | |
| 7307 if (FRAME_TTY_P (f) && f->order_count > 1 && f->order_count <= 99999999) | |
| 7308 { | |
| 7309 /* Naughty, naughty */ | |
| 7310 char * writable_str = alloca_array (char, 10); | |
| 7311 sprintf (writable_str, "-%d", f->order_count); | |
| 7312 str = writable_str; | |
| 7313 } | |
| 7314 } | |
| 7315 #endif /* HAVE_TTY */ | |
| 7316 break; | |
| 7317 | |
| 7318 /* print Narrow if appropriate */ | |
| 7319 case 'n': | |
| 7320 if (BUF_BEGV (b) > BUF_BEG (b) | |
| 7321 || BUF_ZV (b) < BUF_Z (b)) | |
| 7322 str = " Narrow"; | |
| 7323 break; | |
| 7324 | |
| 7325 /* print %, * or hyphen, if buffer is read-only, modified or neither */ | |
| 7326 case '*': | |
| 7327 str = (!NILP (b->read_only) | |
| 7328 ? "%" | |
| 7329 : ((BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) | |
| 7330 ? "*" | |
| 7331 : "-")); | |
| 7332 break; | |
| 7333 | |
| 7334 /* print * or hyphen -- XEmacs change to allow a buffer to be | |
| 4187 | 7335 read-only but still indicate whether it is modified. */ |
| 428 | 7336 case '+': |
| 7337 str = ((BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) | |
| 7338 ? "*" | |
| 7339 : (!NILP (b->read_only) | |
| 7340 ? "%" | |
| 7341 : "-")); | |
| 7342 break; | |
| 7343 | |
| 7344 /* #### defined in 19.29 decode_mode_spec, but not in | |
| 4187 | 7345 modeline-format doc string. */ |
| 428 | 7346 /* This differs from %* in that it ignores read-only-ness. */ |
| 7347 case '&': | |
| 7348 str = ((BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) | |
| 7349 ? "*" | |
| 7350 : "-"); | |
| 7351 break; | |
| 7352 | |
| 7353 /* print process status */ | |
| 7354 case 's': | |
| 7355 obj = Fget_buffer_process (w->buffer); | |
| 7356 if (NILP (obj)) | |
| 7357 str = GETTEXT ("no process"); | |
| 7358 else | |
| 7359 obj = Fsymbol_name (Fprocess_status (obj)); | |
| 7360 break; | |
| 7361 | |
| 7362 /* Print name of selected frame. */ | |
| 7363 case 'S': | |
| 7364 obj = XFRAME (w->frame)->name; | |
| 7365 break; | |
| 7366 | |
| 7367 /* indicate TEXT or BINARY */ | |
| 7368 case 't': | |
| 7369 /* #### NT does not use this any more. Now what? */ | |
| 7370 str = "T"; | |
| 7371 break; | |
| 7372 | |
| 7373 /* print percent of buffer above top of window, or Top, Bot or All */ | |
| 7374 case 'p': | |
| 7375 { | |
| 665 | 7376 Charbpos pos = marker_position (w->start[type]); |
| 428 | 7377 |
| 7378 /* This had better be while the desired lines are being done. */ | |
| 7379 if (w->window_end_pos[type] <= BUF_Z (b) - BUF_ZV (b)) | |
| 7380 { | |
| 7381 if (pos <= BUF_BEGV (b)) | |
| 7382 str = "All"; | |
| 7383 else | |
| 7384 str = "Bottom"; | |
| 7385 } | |
| 7386 else if (pos <= BUF_BEGV (b)) | |
| 7387 str = "Top"; | |
| 7388 else | |
| 7389 { | |
| 7390 /* This hard limit is ok since the string it will hold has a | |
| 4187 | 7391 fixed maximum length of 3. But just to be safe... */ |
| 428 | 7392 char buf[10]; |
| 7393 Charcount chars = pos - BUF_BEGV (b); | |
| 7394 Charcount total = BUF_ZV (b) - BUF_BEGV (b); | |
| 7395 | |
| 7396 /* Avoid overflow on big buffers */ | |
| 7397 int percent = total > LONG_MAX/200 ? | |
| 7398 (chars + total/200) / (total / 100) : | |
| 7399 (chars * 100 + total/2) / total; | |
| 7400 | |
| 7401 /* We can't normally display a 3-digit number, so get us a | |
| 4187 | 7402 2-digit number that is close. */ |
| 428 | 7403 if (percent == 100) |
| 7404 percent = 99; | |
| 7405 | |
| 7406 sprintf (buf, "%d%%", percent); | |
| 867 | 7407 Dynarr_add_many (mode_spec_ibyte_string, (Ibyte *) buf, |
| 428 | 7408 strlen (buf)); |
| 7409 | |
| 7410 goto decode_mode_spec_done; | |
| 7411 } | |
| 7412 break; | |
| 7413 } | |
| 7414 | |
| 7415 /* print percent of buffer above bottom of window, perhaps plus | |
| 7416 Top, or print Bottom or All */ | |
| 7417 case 'P': | |
| 7418 { | |
| 665 | 7419 Charbpos toppos = marker_position (w->start[type]); |
| 7420 Charbpos botpos = BUF_Z (b) - w->window_end_pos[type]; | |
| 428 | 7421 |
| 7422 /* botpos is only accurate as of the last redisplay, so we can | |
| 4187 | 7423 only treat it as a hint. In particular, after erase-buffer, |
| 7424 botpos may be negative. */ | |
| 428 | 7425 if (botpos < toppos) |
| 7426 botpos = toppos; | |
| 7427 | |
| 7428 if (botpos >= BUF_ZV (b)) | |
| 7429 { | |
| 7430 if (toppos <= BUF_BEGV (b)) | |
| 7431 str = "All"; | |
| 7432 else | |
| 7433 str = "Bottom"; | |
| 7434 } | |
| 7435 else | |
| 7436 { | |
| 7437 /* This hard limit is ok since the string it will hold has a | |
| 4187 | 7438 fixed maximum length of around 6. But just to be safe... */ |
| 428 | 7439 char buf[10]; |
| 7440 Charcount chars = botpos - BUF_BEGV (b); | |
| 7441 Charcount total = BUF_ZV (b) - BUF_BEGV (b); | |
| 7442 | |
| 7443 /* Avoid overflow on big buffers */ | |
| 7444 int percent = total > LONG_MAX/200 ? | |
| 7445 (chars + total/200) / (total / 100) : | |
| 7446 (chars * 100 + total/2) / max (total, 1); | |
| 7447 | |
| 7448 /* We can't normally display a 3-digit number, so get us a | |
| 4187 | 7449 2-digit number that is close. */ |
| 428 | 7450 if (percent == 100) |
| 7451 percent = 99; | |
| 7452 | |
| 7453 if (toppos <= BUF_BEGV (b)) | |
| 7454 sprintf (buf, "Top%d%%", percent); | |
| 7455 else | |
| 7456 sprintf (buf, "%d%%", percent); | |
| 7457 | |
| 867 | 7458 Dynarr_add_many (mode_spec_ibyte_string, (Ibyte *) buf, |
| 428 | 7459 strlen (buf)); |
| 7460 | |
| 7461 goto decode_mode_spec_done; | |
| 7462 } | |
| 7463 break; | |
| 7464 } | |
| 7465 | |
| 7466 /* print % */ | |
| 7467 case '%': | |
| 7468 str = "%"; | |
| 7469 break; | |
| 7470 | |
| 7471 /* print one [ for each recursive editing level. */ | |
| 7472 case '[': | |
| 7473 { | |
| 7474 int i; | |
| 7475 | |
| 7476 if (command_loop_level > 5) | |
| 7477 { | |
| 7478 str = "[[[... "; | |
| 7479 break; | |
| 7480 } | |
| 7481 | |
| 7482 for (i = 0; i < command_loop_level; i++) | |
| 867 | 7483 Dynarr_add (mode_spec_ibyte_string, '['); |
| 428 | 7484 |
| 7485 goto decode_mode_spec_done; | |
| 7486 } | |
| 7487 | |
| 7488 /* print one ] for each recursive editing level. */ | |
| 7489 case ']': | |
| 7490 { | |
| 7491 int i; | |
| 7492 | |
| 7493 if (command_loop_level > 5) | |
| 7494 { | |
| 7495 str = "...]]]"; | |
| 7496 break; | |
| 7497 } | |
| 7498 | |
| 7499 for (i = 0; i < command_loop_level; i++) | |
| 867 | 7500 Dynarr_add (mode_spec_ibyte_string, ']'); |
| 428 | 7501 |
| 7502 goto decode_mode_spec_done; | |
| 7503 } | |
| 7504 | |
| 7505 /* print infinitely many dashes -- handle at top level now */ | |
| 7506 case '-': | |
| 7507 break; | |
| 7508 | |
| 7509 } | |
| 7510 | |
| 7511 if (STRINGP (obj)) | |
| 867 | 7512 Dynarr_add_many (mode_spec_ibyte_string, |
| 428 | 7513 XSTRING_DATA (obj), |
| 7514 XSTRING_LENGTH (obj)); | |
| 7515 else if (str) | |
| 867 | 7516 Dynarr_add_many (mode_spec_ibyte_string, (Ibyte *) str, strlen (str)); |
| 428 | 7517 |
| 7518 decode_mode_spec_done: | |
| 867 | 7519 Dynarr_add (mode_spec_ibyte_string, '\0'); |
| 428 | 7520 } |
| 7521 | |
| 7522 /* Given a display line, free all of its data structures. */ | |
| 7523 | |
| 7524 static void | |
| 7525 free_display_line (struct display_line *dl) | |
| 7526 { | |
| 7527 int block; | |
| 7528 | |
| 7529 if (dl->display_blocks) | |
| 7530 { | |
| 7531 for (block = 0; block < Dynarr_largest (dl->display_blocks); block++) | |
| 4187 | 7532 { |
| 428 | 7533 struct display_block *db = Dynarr_atp (dl->display_blocks, block); |
| 7534 | |
| 7535 Dynarr_free (db->runes); | |
| 7536 } | |
| 7537 | |
| 7538 Dynarr_free (dl->display_blocks); | |
| 7539 dl->display_blocks = NULL; | |
| 7540 } | |
| 7541 | |
| 7542 if (dl->left_glyphs) | |
| 7543 { | |
| 7544 Dynarr_free (dl->left_glyphs); | |
| 7545 dl->left_glyphs = NULL; | |
| 7546 } | |
| 7547 | |
| 7548 if (dl->right_glyphs) | |
| 7549 { | |
| 7550 Dynarr_free (dl->right_glyphs); | |
| 7551 dl->right_glyphs = NULL; | |
| 7552 } | |
| 7553 } | |
| 7554 | |
| 7555 | |
| 7556 /* Given an array of display lines, free them and all data structures | |
| 7557 contained within them. */ | |
| 7558 | |
| 7559 void | |
| 7560 free_display_lines (display_line_dynarr *dla) | |
| 7561 { | |
| 7562 int line; | |
| 7563 | |
| 7564 for (line = 0; line < Dynarr_largest (dla); line++) | |
| 7565 { | |
| 7566 free_display_line (Dynarr_atp (dla, line)); | |
| 7567 } | |
| 7568 | |
| 7569 Dynarr_free (dla); | |
| 7570 } | |
| 7571 | |
| 7572 /* Call internal free routine for each set of display lines. */ | |
| 7573 | |
| 7574 void | |
| 7575 free_display_structs (struct window_mirror *mir) | |
| 7576 { | |
| 7577 if (mir->current_display_lines) | |
| 7578 { | |
| 7579 free_display_lines (mir->current_display_lines); | |
| 7580 mir->current_display_lines = 0; | |
| 7581 } | |
| 7582 | |
| 7583 if (mir->desired_display_lines) | |
| 7584 { | |
| 7585 free_display_lines (mir->desired_display_lines); | |
| 7586 mir->desired_display_lines = 0; | |
| 7587 } | |
| 7588 } | |
| 7589 | |
| 7590 | |
| 7591 static void | |
| 7592 mark_glyph_block_dynarr (glyph_block_dynarr *gba) | |
| 7593 { | |
| 7594 if (gba) | |
| 7595 { | |
| 7596 glyph_block *gb = Dynarr_atp (gba, 0); | |
| 7597 glyph_block *gb_last = Dynarr_atp (gba, Dynarr_length (gba)); | |
| 7598 | |
| 7599 for (; gb < gb_last; gb++) | |
| 7600 { | |
| 7601 if (!NILP (gb->glyph)) | |
| 7602 mark_object (gb->glyph); | |
| 7603 if (!NILP (gb->extent)) | |
| 7604 mark_object (gb->extent); | |
| 7605 } | |
| 7606 } | |
| 7607 } | |
| 7608 | |
| 442 | 7609 /* See the comment in image_instantiate_cache_result as to why marking |
| 7610 the glyph will also mark the image_instance. */ | |
| 7611 void | |
| 428 | 7612 mark_redisplay_structs (display_line_dynarr *dla) |
| 7613 { | |
| 7614 display_line *dl = Dynarr_atp (dla, 0); | |
| 7615 display_line *dl_last = Dynarr_atp (dla, Dynarr_length (dla)); | |
| 7616 | |
| 7617 for (; dl < dl_last; dl++) | |
| 7618 { | |
| 7619 display_block_dynarr *dba = dl->display_blocks; | |
| 7620 display_block *db = Dynarr_atp (dba, 0); | |
| 7621 display_block *db_last = Dynarr_atp (dba, Dynarr_length (dba)); | |
| 7622 | |
| 7623 for (; db < db_last; db++) | |
| 7624 { | |
| 7625 rune_dynarr *ra = db->runes; | |
| 7626 rune *r = Dynarr_atp (ra, 0); | |
| 7627 rune *r_last = Dynarr_atp (ra, Dynarr_length (ra)); | |
| 7628 | |
| 7629 for (; r < r_last; r++) | |
| 7630 { | |
| 7631 if (r->type == RUNE_DGLYPH) | |
| 7632 { | |
| 7633 if (!NILP (r->object.dglyph.glyph)) | |
| 7634 mark_object (r->object.dglyph.glyph); | |
| 7635 if (!NILP (r->object.dglyph.extent)) | |
| 7636 mark_object (r->object.dglyph.extent); | |
| 7637 } | |
| 7638 } | |
| 7639 } | |
| 7640 | |
| 7641 mark_glyph_block_dynarr (dl->left_glyphs); | |
| 7642 mark_glyph_block_dynarr (dl->right_glyphs); | |
| 7643 } | |
| 7644 } | |
| 7645 | |
| 7646 | |
| 2367 | 7647 |
| 7648 /* | |
| 7649 | |
| 7650 Info on line-start cache: | |
| 7651 | |
| 7652 (Info-goto-node "(internals)Line Start Cache") | |
| 7653 */ | |
| 428 | 7654 |
| 7655 /* This will get used quite a bit so we don't want to be constantly | |
| 7656 allocating and freeing it. */ | |
| 7657 static line_start_cache_dynarr *internal_cache; | |
| 7658 | |
| 7659 /* Makes internal_cache represent the TYPE display structs and only | |
| 7660 the TYPE display structs. */ | |
| 7661 | |
| 7662 static void | |
| 7663 update_internal_cache_list (struct window *w, int type) | |
| 7664 { | |
| 7665 int line; | |
| 7666 display_line_dynarr *dla = window_display_lines (w, type); | |
| 7667 | |
| 7668 Dynarr_reset (internal_cache); | |
| 7669 for (line = 0; line < Dynarr_length (dla); line++) | |
| 7670 { | |
| 7671 struct display_line *dl = Dynarr_atp (dla, line); | |
| 7672 | |
| 7673 if (dl->modeline) | |
| 7674 continue; | |
| 7675 else | |
| 7676 { | |
| 7677 struct line_start_cache lsc; | |
| 434 | 7678 |
| 826 | 7679 lsc.start = dl->charpos; |
| 7680 lsc.end = dl->end_charpos; | |
| 428 | 7681 lsc.height = dl->ascent + dl->descent; |
| 7682 | |
| 7683 Dynarr_add (internal_cache, lsc); | |
| 7684 } | |
| 7685 } | |
| 7686 } | |
| 7687 | |
| 7688 /* Reset the line cache if necessary. This should be run at the | |
| 7689 beginning of any function which access the cache. */ | |
| 7690 | |
| 7691 static void | |
| 7692 validate_line_start_cache (struct window *w) | |
| 7693 { | |
| 7694 struct buffer *b = XBUFFER (w->buffer); | |
| 7695 struct frame *f = XFRAME (w->frame); | |
| 7696 | |
| 7697 if (!w->line_cache_validation_override) | |
| 7698 { | |
| 7699 /* f->extents_changed used to be in here because extent face and | |
| 4187 | 7700 size changes can cause text shifting. However, the extent |
| 7701 covering the region is constantly having its face set and | |
| 7702 priority altered by the mouse code. This means that the line | |
| 7703 start cache is constantly being invalidated. This is bad | |
| 7704 since the mouse code also triggers heavy usage of the cache. | |
| 7705 Since it is an unlikely that f->extents being changed | |
| 7706 indicates that the cache really needs to be updated and if it | |
| 7707 does redisplay will catch it pretty quickly we no longer | |
| 7708 invalidate the cache if it is set. This greatly speeds up | |
| 7709 dragging out regions with the mouse. */ | |
| 428 | 7710 if (XINT (w->line_cache_last_updated) < BUF_MODIFF (b) |
| 7711 || f->faces_changed | |
| 7712 || f->clip_changed) | |
| 7713 { | |
| 7714 Dynarr_reset (w->line_start_cache); | |
| 7715 } | |
| 7716 } | |
| 7717 } | |
| 7718 | |
| 7719 /* Return the very first buffer position contained in the given | |
| 7720 window's cache, or -1 if the cache is empty. Assumes that the | |
| 7721 cache is valid. */ | |
| 7722 | |
| 665 | 7723 static Charbpos |
| 428 | 7724 line_start_cache_start (struct window *w) |
| 7725 { | |
| 7726 line_start_cache_dynarr *cache = w->line_start_cache; | |
| 7727 | |
| 7728 if (!Dynarr_length (cache)) | |
| 7729 return -1; | |
| 7730 else | |
| 7731 return Dynarr_atp (cache, 0)->start; | |
| 7732 } | |
| 7733 | |
| 7734 /* Return the very last buffer position contained in the given | |
| 7735 window's cache, or -1 if the cache is empty. Assumes that the | |
| 7736 cache is valid. */ | |
| 7737 | |
| 665 | 7738 static Charbpos |
| 428 | 7739 line_start_cache_end (struct window *w) |
| 7740 { | |
| 7741 line_start_cache_dynarr *cache = w->line_start_cache; | |
| 7742 | |
| 7743 if (!Dynarr_length (cache)) | |
| 7744 return -1; | |
| 7745 else | |
| 7746 return Dynarr_atp (cache, Dynarr_length (cache) - 1)->end; | |
| 7747 } | |
| 7748 | |
| 7749 /* Return the index of the line POINT is contained within in window | |
| 7750 W's line start cache. It will enlarge the cache or move the cache | |
| 7751 window in order to have POINT be present in the cache. MIN_PAST is | |
| 7752 a guarantee of the number of entries in the cache present on either | |
| 7753 side of POINT (unless a buffer boundary is hit). If MIN_PAST is -1 | |
| 7754 then it will be treated as 0, but the cache window will not be | |
| 7755 allowed to shift. Returns -1 if POINT cannot be found in the cache | |
| 7756 for any reason. */ | |
| 7757 | |
| 7758 int | |
| 665 | 7759 point_in_line_start_cache (struct window *w, Charbpos point, int min_past) |
| 428 | 7760 { |
| 7761 struct buffer *b = XBUFFER (w->buffer); | |
| 7762 line_start_cache_dynarr *cache = w->line_start_cache; | |
| 647 | 7763 int top, bottom, pos; |
| 428 | 7764 |
| 7765 validate_line_start_cache (w); | |
| 7766 w->line_cache_validation_override++; | |
| 7767 | |
| 7768 /* Let functions pass in negative values, but we still treat -1 | |
| 7769 specially. */ | |
| 7770 /* #### bogosity alert */ | |
| 7771 if (min_past < 0 && min_past != -1) | |
| 7772 min_past = -min_past; | |
| 7773 | |
| 7774 if (!Dynarr_length (cache) || line_start_cache_start (w) > point | |
| 7775 || line_start_cache_end (w) < point) | |
| 7776 { | |
| 7777 int loop; | |
| 7778 int win_char_height = window_char_height (w, 1); | |
| 7779 | |
| 7780 /* Occasionally we get here with a 0 height | |
| 4187 | 7781 window. find_next_newline_no_quit will abort if we pass it a |
| 7782 count of 0 so handle that case. */ | |
| 428 | 7783 if (!win_char_height) |
| 7784 win_char_height = 1; | |
| 7785 | |
| 7786 if (!Dynarr_length (cache)) | |
| 7787 { | |
| 665 | 7788 Charbpos from = find_next_newline_no_quit (b, point, -1); |
| 7789 Charbpos to = find_next_newline_no_quit (b, from, win_char_height); | |
| 428 | 7790 |
| 7791 update_line_start_cache (w, from, to, point, 0); | |
| 7792 | |
| 7793 if (!Dynarr_length (cache)) | |
| 7794 { | |
| 7795 w->line_cache_validation_override--; | |
| 7796 return -1; | |
| 7797 } | |
| 7798 } | |
| 7799 | |
| 7800 assert (Dynarr_length (cache)); | |
| 7801 | |
| 7802 loop = 0; | |
| 7803 while (line_start_cache_start (w) > point | |
| 7804 && (loop < cache_adjustment || min_past == -1)) | |
| 7805 { | |
| 665 | 7806 Charbpos from, to; |
| 428 | 7807 |
| 7808 from = line_start_cache_start (w); | |
| 7809 if (from <= BUF_BEGV (b)) | |
| 7810 break; | |
| 7811 | |
| 7812 from = find_next_newline_no_quit (b, from, -win_char_height); | |
| 7813 to = line_start_cache_end (w); | |
| 7814 | |
| 7815 update_line_start_cache (w, from, to, point, 0); | |
| 7816 loop++; | |
| 7817 } | |
| 7818 | |
| 7819 if (line_start_cache_start (w) > point) | |
| 7820 { | |
| 665 | 7821 Charbpos from, to; |
| 428 | 7822 |
| 7823 from = find_next_newline_no_quit (b, point, -1); | |
| 7824 if (from >= BUF_ZV (b)) | |
| 7825 { | |
| 7826 to = find_next_newline_no_quit (b, from, -win_char_height); | |
| 7827 from = to; | |
| 7828 to = BUF_ZV (b); | |
| 7829 } | |
| 7830 else | |
| 7831 to = find_next_newline_no_quit (b, from, win_char_height); | |
| 7832 | |
| 7833 update_line_start_cache (w, from, to, point, 0); | |
| 7834 } | |
| 7835 | |
| 7836 loop = 0; | |
| 7837 while (line_start_cache_end (w) < point | |
| 7838 && (loop < cache_adjustment || min_past == -1)) | |
| 7839 { | |
| 665 | 7840 Charbpos from, to; |
| 428 | 7841 |
| 7842 to = line_start_cache_end (w); | |
| 7843 if (to >= BUF_ZV (b)) | |
| 7844 break; | |
| 7845 | |
| 7846 from = line_start_cache_end (w); | |
| 7847 to = find_next_newline_no_quit (b, from, win_char_height); | |
| 7848 | |
| 7849 update_line_start_cache (w, from, to, point, 0); | |
| 7850 loop++; | |
| 7851 } | |
| 7852 | |
| 7853 if (line_start_cache_end (w) < point) | |
| 7854 { | |
| 665 | 7855 Charbpos from, to; |
| 428 | 7856 |
| 7857 from = find_next_newline_no_quit (b, point, -1); | |
| 7858 if (from >= BUF_ZV (b)) | |
| 7859 { | |
| 7860 to = find_next_newline_no_quit (b, from, -win_char_height); | |
| 7861 from = to; | |
| 7862 to = BUF_ZV (b); | |
| 7863 } | |
| 7864 else | |
| 7865 to = find_next_newline_no_quit (b, from, win_char_height); | |
| 7866 | |
| 7867 update_line_start_cache (w, from, to, point, 0); | |
| 7868 } | |
| 7869 } | |
| 7870 | |
| 7871 assert (Dynarr_length (cache)); | |
| 7872 | |
| 7873 if (min_past == -1) | |
| 7874 min_past = 0; | |
| 7875 | |
| 7876 /* This could happen if the buffer is narrowed. */ | |
| 7877 if (line_start_cache_start (w) > point | |
| 7878 || line_start_cache_end (w) < point) | |
| 7879 { | |
| 7880 w->line_cache_validation_override--; | |
| 7881 return -1; | |
| 7882 } | |
| 7883 | |
| 7884 find_point_loop: | |
| 7885 | |
| 7886 top = Dynarr_length (cache) - 1; | |
| 7887 bottom = 0; | |
| 7888 | |
| 7889 while (1) | |
| 7890 { | |
| 647 | 7891 int new_pos; |
| 665 | 7892 Charbpos start, end; |
| 428 | 7893 |
| 7894 pos = (bottom + top + 1) >> 1; | |
| 7895 start = Dynarr_atp (cache, pos)->start; | |
| 7896 end = Dynarr_atp (cache, pos)->end; | |
| 7897 | |
| 7898 if (point >= start && point <= end) | |
| 7899 { | |
| 7900 if (pos < min_past && line_start_cache_start (w) > BUF_BEGV (b)) | |
| 7901 { | |
| 665 | 7902 Charbpos from = |
| 428 | 7903 find_next_newline_no_quit (b, line_start_cache_start (w), |
| 7904 -min_past - 1); | |
| 665 | 7905 Charbpos to = line_start_cache_end (w); |
| 428 | 7906 |
| 7907 update_line_start_cache (w, from, to, point, 0); | |
| 7908 goto find_point_loop; | |
| 7909 } | |
| 7910 else if ((Dynarr_length (cache) - pos - 1) < min_past | |
| 7911 && line_start_cache_end (w) < BUF_ZV (b)) | |
| 7912 { | |
| 665 | 7913 Charbpos from = line_start_cache_end (w); |
| 7914 Charbpos to = find_next_newline_no_quit (b, from, | |
| 428 | 7915 (min_past |
| 7916 ? min_past | |
| 7917 : 1)); | |
| 7918 | |
| 7919 update_line_start_cache (w, from, to, point, 0); | |
| 7920 goto find_point_loop; | |
| 7921 } | |
| 7922 else | |
| 7923 { | |
| 7924 w->line_cache_validation_override--; | |
| 7925 return pos; | |
| 7926 } | |
| 7927 } | |
| 7928 else if (point > end) | |
| 7929 bottom = pos + 1; | |
| 7930 else if (point < start) | |
| 7931 top = pos - 1; | |
| 7932 else | |
| 2500 | 7933 ABORT (); |
| 428 | 7934 |
| 7935 new_pos = (bottom + top + 1) >> 1; | |
| 7936 if (pos == new_pos) | |
| 7937 { | |
| 7938 w->line_cache_validation_override--; | |
| 7939 return -1; | |
| 7940 } | |
| 7941 } | |
| 7942 } | |
| 7943 | |
| 7944 /* Return a boolean indicating if POINT would be visible in window W | |
| 1708 | 7945 if display of the window was to begin at STARTP. If PARTIALLY is |
| 7946 zero, then if POINT has fewer visible pixels than the window clip, | |
| 7947 0 is returned; otherwise, 1 is returned if POINT has any visible | |
| 7948 pixels. */ | |
| 428 | 7949 int |
| 1708 | 7950 point_would_be_visible (struct window *w, Charbpos startp, Charbpos point, |
| 7951 int partially) | |
| 428 | 7952 { |
| 7953 struct buffer *b = XBUFFER (w->buffer); | |
| 430 | 7954 int pixpos = -WINDOW_TEXT_TOP_CLIP(w); |
| 428 | 7955 int bottom = WINDOW_TEXT_HEIGHT (w); |
| 7956 int start_elt; | |
| 7957 | |
| 7958 /* If point is before the intended start it obviously can't be visible. */ | |
| 7959 if (point < startp) | |
| 7960 return 0; | |
| 7961 | |
| 7962 /* If point or start are not in the accessible buffer range, then | |
| 7963 fail. */ | |
| 7964 if (startp < BUF_BEGV (b) || startp > BUF_ZV (b) | |
| 7965 || point < BUF_BEGV (b) || point > BUF_ZV (b)) | |
| 7966 return 0; | |
| 7967 | |
| 7968 validate_line_start_cache (w); | |
| 7969 w->line_cache_validation_override++; | |
| 7970 | |
| 7971 start_elt = point_in_line_start_cache (w, startp, 0); | |
| 7972 if (start_elt == -1) | |
| 7973 { | |
| 7974 w->line_cache_validation_override--; | |
| 7975 return 0; | |
| 7976 } | |
| 7977 | |
| 7978 assert (line_start_cache_start (w) <= startp | |
| 7979 && line_start_cache_end (w) >= startp); | |
| 7980 | |
| 7981 while (1) | |
| 7982 { | |
| 7983 int height; | |
| 7984 | |
| 7985 /* Expand the cache if necessary. */ | |
| 7986 if (start_elt == Dynarr_length (w->line_start_cache)) | |
| 7987 { | |
| 665 | 7988 Charbpos old_startp = |
| 428 | 7989 Dynarr_atp (w->line_start_cache, start_elt - 1)->start; |
| 7990 | |
| 7991 start_elt = point_in_line_start_cache (w, old_startp, | |
| 7992 window_char_height (w, 0)); | |
| 7993 | |
| 7994 /* We've already actually processed old_startp, so increment | |
| 4187 | 7995 immediately. */ |
| 428 | 7996 start_elt++; |
| 7997 | |
| 7998 /* If this happens we didn't add any extra elements. Bummer. */ | |
| 7999 if (start_elt == Dynarr_length (w->line_start_cache)) | |
| 8000 { | |
| 8001 w->line_cache_validation_override--; | |
| 8002 return 0; | |
| 8003 } | |
| 8004 } | |
| 8005 | |
| 8006 height = Dynarr_atp (w->line_start_cache, start_elt)->height; | |
| 8007 | |
| 8008 if (pixpos + height > bottom) | |
| 8009 { | |
| 1708 | 8010 if (bottom - pixpos < (partially ? 0 : VERTICAL_CLIP (w, 0))) |
| 428 | 8011 { |
| 8012 w->line_cache_validation_override--; | |
| 8013 return 0; | |
| 8014 } | |
| 8015 } | |
| 8016 | |
| 8017 pixpos += height; | |
| 8018 if (point <= Dynarr_atp (w->line_start_cache, start_elt)->end) | |
| 8019 { | |
| 8020 w->line_cache_validation_override--; | |
| 8021 return 1; | |
| 8022 } | |
| 8023 | |
| 8024 start_elt++; | |
| 8025 } | |
| 8026 } | |
| 8027 | |
| 8028 /* For the given window W, if display starts at STARTP, what will be | |
| 8029 the buffer position at the beginning or end of the last line | |
| 8030 displayed. The end of the last line is also know as the window end | |
| 8031 position. | |
| 8032 | |
| 442 | 8033 WARNING: It is possible that redisplay failed to layout any lines for the |
| 8034 windows. Under normal circumstances this is rare. However it seems that it | |
| 8035 does occur in the following situation: A mouse event has come in and we | |
| 8036 need to compute its location in a window. That code (in | |
| 8037 pixel_to_glyph_translation) already can handle 0 as an error return value. | |
| 8038 | |
| 428 | 8039 #### With a little work this could probably be reworked as just a |
| 8040 call to start_with_line_at_pixpos. */ | |
| 8041 | |
| 665 | 8042 static Charbpos |
| 8043 start_end_of_last_line (struct window *w, Charbpos startp, int end, | |
| 4187 | 8044 int may_error) |
| 428 | 8045 { |
| 8046 struct buffer *b = XBUFFER (w->buffer); | |
| 8047 line_start_cache_dynarr *cache = w->line_start_cache; | |
| 8048 int pixpos = 0; | |
| 8049 int bottom = WINDOW_TEXT_HEIGHT (w); | |
| 665 | 8050 Charbpos cur_start; |
| 428 | 8051 int start_elt; |
| 8052 | |
| 8053 validate_line_start_cache (w); | |
| 8054 w->line_cache_validation_override++; | |
| 8055 | |
| 8056 if (startp < BUF_BEGV (b)) | |
| 8057 startp = BUF_BEGV (b); | |
| 8058 else if (startp > BUF_ZV (b)) | |
| 8059 startp = BUF_ZV (b); | |
| 8060 cur_start = startp; | |
| 8061 | |
| 8062 start_elt = point_in_line_start_cache (w, cur_start, 0); | |
| 8063 if (start_elt == -1) | |
| 442 | 8064 return may_error ? 0 : startp; |
| 428 | 8065 |
| 8066 while (1) | |
| 8067 { | |
| 8068 int height = Dynarr_atp (cache, start_elt)->height; | |
| 8069 | |
| 8070 cur_start = Dynarr_atp (cache, start_elt)->start; | |
| 8071 | |
| 8072 if (pixpos + height > bottom) | |
| 8073 { | |
| 8074 /* Adjust for any possible clip. */ | |
| 8075 if (bottom - pixpos < VERTICAL_CLIP (w, 0)) | |
| 8076 start_elt--; | |
| 8077 | |
| 8078 if (start_elt < 0) | |
| 8079 { | |
| 8080 w->line_cache_validation_override--; | |
| 8081 if (end) | |
| 8082 return BUF_ZV (b); | |
| 8083 else | |
| 8084 return BUF_BEGV (b); | |
| 8085 } | |
| 8086 else | |
| 8087 { | |
| 8088 w->line_cache_validation_override--; | |
| 8089 if (end) | |
| 8090 return Dynarr_atp (cache, start_elt)->end; | |
| 8091 else | |
| 8092 return Dynarr_atp (cache, start_elt)->start; | |
| 8093 } | |
| 8094 } | |
| 8095 | |
| 8096 pixpos += height; | |
| 8097 start_elt++; | |
| 8098 if (start_elt == Dynarr_length (cache)) | |
| 8099 { | |
| 665 | 8100 Charbpos from = line_start_cache_end (w); |
| 428 | 8101 int win_char_height = window_char_height (w, 0); |
| 665 | 8102 Charbpos to = find_next_newline_no_quit (b, from, |
| 428 | 8103 (win_char_height |
| 8104 ? win_char_height | |
| 8105 : 1)); | |
| 8106 | |
| 8107 /* We've hit the end of the bottom so that's what it is. */ | |
| 8108 if (from >= BUF_ZV (b)) | |
| 8109 { | |
| 8110 w->line_cache_validation_override--; | |
| 8111 return BUF_ZV (b); | |
| 8112 } | |
| 8113 | |
| 8114 update_line_start_cache (w, from, to, BUF_PT (b), 0); | |
| 8115 | |
| 8116 /* Updating the cache invalidates any current indexes. */ | |
| 8117 start_elt = point_in_line_start_cache (w, cur_start, -1) + 1; | |
| 8118 } | |
| 8119 } | |
| 8120 } | |
| 8121 | |
| 8122 /* For the given window W, if display starts at STARTP, what will be | |
| 8123 the buffer position at the beginning of the last line displayed. */ | |
| 8124 | |
| 665 | 8125 Charbpos |
| 8126 start_of_last_line (struct window *w, Charbpos startp) | |
| 428 | 8127 { |
| 442 | 8128 return start_end_of_last_line (w, startp, 0 , 0); |
| 428 | 8129 } |
| 8130 | |
| 8131 /* For the given window W, if display starts at STARTP, what will be | |
| 8132 the buffer position at the end of the last line displayed. This is | |
| 8133 also know as the window end position. */ | |
| 8134 | |
| 665 | 8135 Charbpos |
| 8136 end_of_last_line (struct window *w, Charbpos startp) | |
| 428 | 8137 { |
| 442 | 8138 return start_end_of_last_line (w, startp, 1, 0); |
| 428 | 8139 } |
| 8140 | |
| 665 | 8141 static Charbpos |
| 8142 end_of_last_line_may_error (struct window *w, Charbpos startp) | |
| 442 | 8143 { |
| 8144 return start_end_of_last_line (w, startp, 1, 1); | |
| 8145 } | |
| 8146 | |
| 8147 | |
| 428 | 8148 /* For window W, what does the starting position have to be so that |
| 8149 the line containing POINT will cover pixel position PIXPOS. */ | |
| 8150 | |
| 665 | 8151 Charbpos |
| 8152 start_with_line_at_pixpos (struct window *w, Charbpos point, int pixpos) | |
| 428 | 8153 { |
| 8154 struct buffer *b = XBUFFER (w->buffer); | |
| 8155 int cur_elt; | |
| 665 | 8156 Charbpos cur_pos, prev_pos = point; |
| 428 | 8157 int point_line_height; |
| 8158 int pixheight = pixpos - WINDOW_TEXT_TOP (w); | |
| 8159 | |
| 8160 validate_line_start_cache (w); | |
| 8161 w->line_cache_validation_override++; | |
| 8162 | |
| 8163 cur_elt = point_in_line_start_cache (w, point, 0); | |
| 8164 /* #### See comment in update_line_start_cache about big minibuffers. */ | |
| 8165 if (cur_elt < 0) | |
| 8166 { | |
| 8167 w->line_cache_validation_override--; | |
| 8168 return point; | |
| 8169 } | |
| 8170 | |
| 8171 point_line_height = Dynarr_atp (w->line_start_cache, cur_elt)->height; | |
| 8172 | |
| 8173 while (1) | |
| 8174 { | |
| 8175 cur_pos = Dynarr_atp (w->line_start_cache, cur_elt)->start; | |
| 8176 | |
| 8177 pixheight -= Dynarr_atp (w->line_start_cache, cur_elt)->height; | |
| 8178 | |
| 8179 /* Do not take into account the value of vertical_clip here. | |
| 4187 | 8180 That is the responsibility of the calling functions. */ |
| 428 | 8181 if (pixheight < 0) |
| 8182 { | |
| 8183 w->line_cache_validation_override--; | |
| 8184 if (-pixheight > point_line_height) | |
| 8185 /* We can't make the target line cover pixpos, so put it | |
| 8186 above pixpos. That way it will at least be visible. */ | |
| 8187 return prev_pos; | |
| 8188 else | |
| 8189 return cur_pos; | |
| 8190 } | |
| 8191 | |
| 8192 cur_elt--; | |
| 8193 while (cur_elt < 0) | |
| 8194 { | |
| 665 | 8195 Charbpos from, to; |
| 428 | 8196 int win_char_height; |
| 8197 | |
| 8198 if (cur_pos <= BUF_BEGV (b)) | |
| 8199 { | |
| 8200 w->line_cache_validation_override--; | |
| 8201 return BUF_BEGV (b); | |
| 8202 } | |
| 8203 | |
| 8204 win_char_height = window_char_height (w, 0); | |
| 8205 if (!win_char_height) | |
| 8206 win_char_height = 1; | |
| 8207 | |
| 8208 from = find_next_newline_no_quit (b, cur_pos, -win_char_height); | |
| 8209 to = line_start_cache_end (w); | |
| 8210 update_line_start_cache (w, from, to, point, 0); | |
| 8211 | |
| 8212 cur_elt = point_in_line_start_cache (w, cur_pos, 2) - 1; | |
| 8213 assert (cur_elt >= -1); | |
| 8214 /* This used to be cur_elt>=0 under the assumption that if | |
| 8215 point is in the top line and not at BUF_BEGV, then | |
| 434 | 8216 setting the window_start to a newline before the start of |
| 428 | 8217 the first line will always cause scrolling. |
| 8218 | |
| 8219 However in my (jv) opinion this is wrong. That new line | |
| 8220 can be hidden in various ways: invisible extents, an | |
| 8221 explicit window-start not at a newline character etc. | |
| 8222 The existence of those are indeed known to create crashes | |
| 8223 on that assert. So we have no option but to continue the | |
| 8224 search if we found point at the top of the line_start_cache | |
| 8225 again. */ | |
| 434 | 8226 cur_pos = Dynarr_atp (w->line_start_cache,0)->start; |
| 428 | 8227 } |
| 8228 prev_pos = cur_pos; | |
| 8229 } | |
| 8230 } | |
| 8231 | |
| 8232 /* For window W, what does the starting position have to be so that | |
| 8233 the line containing point is on display line LINE. If LINE is | |
| 8234 positive it is considered to be the number of lines from the top of | |
| 8235 the window (0 is the top line). If it is negative the number is | |
| 8236 considered to be the number of lines from the bottom (-1 is the | |
| 8237 bottom line). */ | |
| 8238 | |
| 665 | 8239 Charbpos |
| 8240 start_with_point_on_display_line (struct window *w, Charbpos point, int line) | |
| 428 | 8241 { |
| 8242 validate_line_start_cache (w); | |
| 8243 w->line_cache_validation_override++; | |
| 8244 | |
| 8245 if (line >= 0) | |
| 8246 { | |
| 8247 int cur_elt = point_in_line_start_cache (w, point, line); | |
| 8248 | |
| 8249 if (cur_elt - line < 0) | |
| 8250 cur_elt = 0; /* Hit the top */ | |
| 8251 else | |
| 8252 cur_elt -= line; | |
| 8253 | |
| 8254 w->line_cache_validation_override--; | |
| 8255 return Dynarr_atp (w->line_start_cache, cur_elt)->start; | |
| 8256 } | |
| 8257 else | |
| 8258 { | |
| 8259 /* The calculated value of pixpos is correct for the bottom line | |
| 4187 | 8260 or what we want when line is -1. Therefore we subtract one |
| 8261 because we have already handled one line. */ | |
| 428 | 8262 int new_line = -line - 1; |
| 8263 int cur_elt = point_in_line_start_cache (w, point, new_line); | |
| 8264 int pixpos = WINDOW_TEXT_BOTTOM (w); | |
| 665 | 8265 Charbpos retval, search_point; |
| 428 | 8266 |
| 8267 /* If scroll_on_clipped_lines is false, the last "visible" line of | |
| 4187 | 8268 the window covers the pixel at WINDOW_TEXT_BOTTOM (w) - 1. |
| 8269 If s_o_c_l is true, then we don't want to count a clipped | |
| 8270 line, so back up from the bottom by the height of the line | |
| 8271 containing point. */ | |
| 428 | 8272 if (scroll_on_clipped_lines) |
| 8273 pixpos -= Dynarr_atp (w->line_start_cache, cur_elt)->height; | |
| 8274 else | |
| 8275 pixpos -= 1; | |
| 8276 | |
| 8277 if (cur_elt + new_line >= Dynarr_length (w->line_start_cache)) | |
| 8278 { | |
| 8279 /* Hit the bottom of the buffer. */ | |
| 8280 int adjustment = | |
| 8281 (cur_elt + new_line) - Dynarr_length (w->line_start_cache) + 1; | |
| 8282 Lisp_Object window; | |
| 8283 int defheight; | |
| 8284 | |
| 793 | 8285 window = wrap_window (w); |
| 428 | 8286 default_face_height_and_width (window, &defheight, 0); |
| 8287 | |
| 8288 cur_elt = Dynarr_length (w->line_start_cache) - 1; | |
| 8289 | |
| 8290 pixpos -= (adjustment * defheight); | |
| 8291 if (pixpos < WINDOW_TEXT_TOP (w)) | |
| 8292 pixpos = WINDOW_TEXT_TOP (w); | |
| 8293 } | |
| 8294 else | |
| 8295 cur_elt = cur_elt + new_line; | |
| 8296 | |
| 8297 search_point = Dynarr_atp (w->line_start_cache, cur_elt)->start; | |
| 8298 | |
| 8299 retval = start_with_line_at_pixpos (w, search_point, pixpos); | |
| 8300 w->line_cache_validation_override--; | |
| 8301 return retval; | |
| 8302 } | |
| 8303 } | |
| 8304 | |
| 8305 /* This is used to speed up vertical scrolling by caching the known | |
| 8306 buffer starting positions for display lines. This allows the | |
| 8307 scrolling routines to avoid costly calls to regenerate_window. If | |
| 8308 NO_REGEN is true then it will only add the values in the DESIRED | |
| 8309 display structs which are in the given range. | |
| 8310 | |
| 8311 Note also that the FROM/TO values are minimums. It is possible | |
| 8312 that this function will actually add information outside of the | |
| 8313 lines containing those positions. This can't hurt but it could | |
| 8314 possibly help. | |
| 8315 | |
| 8316 #### We currently force the cache to have only 1 contiguous region. | |
| 8317 It might help to make the cache a dynarr of caches so that we can | |
| 8318 cover more areas. This might, however, turn out to be a lot of | |
| 8319 overhead for too little gain. */ | |
| 8320 | |
| 8321 static void | |
| 665 | 8322 update_line_start_cache (struct window *w, Charbpos from, Charbpos to, |
| 8323 Charbpos point, int no_regen) | |
| 428 | 8324 { |
| 8325 struct buffer *b = XBUFFER (w->buffer); | |
| 8326 line_start_cache_dynarr *cache = w->line_start_cache; | |
| 665 | 8327 Charbpos low_bound, high_bound; |
| 428 | 8328 |
| 8329 validate_line_start_cache (w); | |
| 8330 w->line_cache_validation_override++; | |
| 8331 | |
| 8332 if (from < BUF_BEGV (b)) | |
| 8333 from = BUF_BEGV (b); | |
| 8334 if (to > BUF_ZV (b)) | |
| 8335 to = BUF_ZV (b); | |
| 8336 | |
| 8337 if (from > to) | |
| 8338 { | |
| 8339 w->line_cache_validation_override--; | |
| 8340 return; | |
| 8341 } | |
| 8342 | |
| 8343 if (Dynarr_length (cache)) | |
| 8344 { | |
| 8345 low_bound = line_start_cache_start (w); | |
| 8346 high_bound = line_start_cache_end (w); | |
| 8347 | |
| 8348 /* Check to see if the desired range is already in the cache. */ | |
| 8349 if (from >= low_bound && to <= high_bound) | |
| 8350 { | |
| 8351 w->line_cache_validation_override--; | |
| 8352 return; | |
| 8353 } | |
| 8354 | |
| 8355 /* Check to make sure that the desired range is adjacent to the | |
| 8356 current cache. If not, invalidate the cache. */ | |
| 8357 if (to < low_bound || from > high_bound) | |
| 8358 { | |
| 8359 Dynarr_reset (cache); | |
| 8360 low_bound = high_bound = -1; | |
| 8361 } | |
| 8362 } | |
| 8363 else | |
| 8364 { | |
| 8365 low_bound = high_bound = -1; | |
| 8366 } | |
| 8367 | |
| 8368 w->line_cache_last_updated = make_int (BUF_MODIFF (b)); | |
| 8369 | |
| 8370 /* This could be integrated into the next two sections, but it is easier | |
| 8371 to follow what's going on by having it separate. */ | |
| 8372 if (no_regen) | |
| 8373 { | |
| 665 | 8374 Charbpos start, end; |
| 428 | 8375 |
| 8376 update_internal_cache_list (w, DESIRED_DISP); | |
| 8377 if (!Dynarr_length (internal_cache)) | |
| 8378 { | |
| 8379 w->line_cache_validation_override--; | |
| 8380 return; | |
| 8381 } | |
| 8382 | |
| 8383 start = Dynarr_atp (internal_cache, 0)->start; | |
| 8384 end = | |
| 8385 Dynarr_atp (internal_cache, Dynarr_length (internal_cache) - 1)->end; | |
| 8386 | |
| 8387 /* We aren't allowed to generate additional information to fill in | |
| 4187 | 8388 gaps, so if the DESIRED structs don't overlap the cache, reset the |
| 8389 cache. */ | |
| 428 | 8390 if (Dynarr_length (cache)) |
| 8391 { | |
| 8392 if (end < low_bound || start > high_bound) | |
| 8393 Dynarr_reset (cache); | |
| 8394 | |
| 8395 /* #### What should really happen if what we are doing is | |
| 4187 | 8396 extending a line (the last line)? */ |
| 428 | 8397 if (Dynarr_length (cache) == 1 |
| 8398 && Dynarr_length (internal_cache) == 1) | |
| 8399 Dynarr_reset (cache); | |
| 8400 } | |
| 8401 | |
| 8402 if (!Dynarr_length (cache)) | |
| 8403 { | |
| 8404 Dynarr_add_many (cache, Dynarr_atp (internal_cache, 0), | |
| 8405 Dynarr_length (internal_cache)); | |
| 8406 w->line_cache_validation_override--; | |
| 8407 return; | |
| 8408 } | |
| 8409 | |
| 8410 /* An extra check just in case the calling function didn't pass in | |
| 4187 | 8411 the bounds of the DESIRED structs in the first place. */ |
| 428 | 8412 if (start >= low_bound && end <= high_bound) |
| 8413 { | |
| 8414 w->line_cache_validation_override--; | |
| 8415 return; | |
| 8416 } | |
| 8417 | |
| 8418 /* At this point we know that the internal cache partially overlaps | |
| 4187 | 8419 the main cache. */ |
| 428 | 8420 if (start < low_bound) |
| 8421 { | |
| 8422 int ic_elt = Dynarr_length (internal_cache) - 1; | |
| 8423 while (ic_elt >= 0) | |
| 8424 { | |
| 8425 if (Dynarr_atp (internal_cache, ic_elt)->start < low_bound) | |
| 8426 break; | |
| 8427 else | |
| 8428 ic_elt--; | |
| 8429 } | |
| 8430 | |
| 8431 if (!(ic_elt >= 0)) | |
| 8432 { | |
| 8433 Dynarr_reset (cache); | |
| 8434 Dynarr_add_many (cache, Dynarr_atp (internal_cache, 0), | |
| 8435 Dynarr_length (internal_cache)); | |
| 8436 w->line_cache_validation_override--; | |
| 8437 return; | |
| 8438 } | |
| 8439 | |
| 8440 Dynarr_insert_many_at_start (cache, Dynarr_atp (internal_cache, 0), | |
| 8441 ic_elt + 1); | |
| 8442 } | |
| 8443 | |
| 8444 if (end > high_bound) | |
| 8445 { | |
| 8446 int ic_elt = 0; | |
| 8447 | |
| 8448 while (ic_elt < Dynarr_length (internal_cache)) | |
| 8449 { | |
| 8450 if (Dynarr_atp (internal_cache, ic_elt)->start > high_bound) | |
| 8451 break; | |
| 8452 else | |
| 8453 ic_elt++; | |
| 8454 } | |
| 8455 | |
| 8456 if (!(ic_elt < Dynarr_length (internal_cache))) | |
| 8457 { | |
| 8458 Dynarr_reset (cache); | |
| 8459 Dynarr_add_many (cache, Dynarr_atp (internal_cache, 0), | |
| 8460 Dynarr_length (internal_cache)); | |
| 8461 w->line_cache_validation_override--; | |
| 8462 return; | |
| 8463 } | |
| 8464 | |
| 8465 Dynarr_add_many (cache, Dynarr_atp (internal_cache, ic_elt), | |
| 8466 Dynarr_length (internal_cache) - ic_elt); | |
| 8467 } | |
| 8468 | |
| 8469 w->line_cache_validation_override--; | |
| 8470 return; | |
| 8471 } | |
| 8472 | |
| 8473 if (!Dynarr_length (cache) || from < low_bound) | |
| 8474 { | |
| 665 | 8475 Charbpos startp = find_next_newline_no_quit (b, from, -1); |
| 428 | 8476 int marker = 0; |
| 8477 int old_lb = low_bound; | |
| 8478 | |
| 8479 while (startp < old_lb || low_bound == -1) | |
| 8480 { | |
| 8481 int ic_elt; | |
| 4187 | 8482 Charbpos new_startp; |
| 428 | 8483 |
| 8484 regenerate_window (w, startp, point, CMOTION_DISP); | |
| 8485 update_internal_cache_list (w, CMOTION_DISP); | |
| 8486 | |
| 8487 /* If this assert is triggered then regenerate_window failed | |
| 4187 | 8488 to layout a single line. This is not possible since we |
| 442 | 8489 force at least a single line to be layout for CMOTION_DISP */ |
| 8490 assert (Dynarr_length (internal_cache)); | |
| 428 | 8491 assert (startp == Dynarr_atp (internal_cache, 0)->start); |
| 8492 | |
| 8493 ic_elt = Dynarr_length (internal_cache) - 1; | |
| 8494 if (low_bound != -1) | |
| 8495 { | |
| 8496 while (ic_elt >= 0) | |
| 8497 { | |
| 8498 if (Dynarr_atp (internal_cache, ic_elt)->start < old_lb) | |
| 8499 break; | |
| 8500 else | |
| 8501 ic_elt--; | |
| 8502 } | |
| 8503 } | |
| 8504 assert (ic_elt >= 0); | |
| 8505 | |
| 8506 new_startp = Dynarr_atp (internal_cache, ic_elt)->end + 1; | |
| 8507 | |
| 4187 | 8508 /* |
| 8509 * Handle invisible text properly: | |
| 8510 * If the last line we're inserting has the same end as the | |
| 8511 * line before which it will be added, merge the two lines. | |
| 8512 */ | |
| 8513 if (Dynarr_length (cache) && | |
| 8514 Dynarr_atp (internal_cache, ic_elt)->end == | |
| 8515 Dynarr_atp (cache, marker)->end) | |
| 8516 { | |
| 8517 Dynarr_atp (cache, marker)->start | |
| 8518 = Dynarr_atp (internal_cache, ic_elt)->start; | |
| 8519 Dynarr_atp (cache, marker)->height | |
| 8520 = Dynarr_atp (internal_cache, ic_elt)->height; | |
| 8521 ic_elt--; | |
| 8522 } | |
| 8523 | |
| 8524 if (ic_elt >= 0) /* we still have lines to add.. */ | |
| 8525 { | |
| 8526 Dynarr_insert_many (cache, Dynarr_atp (internal_cache, 0), | |
| 8527 ic_elt + 1, marker); | |
| 8528 marker += (ic_elt + 1); | |
| 8529 } | |
| 428 | 8530 |
| 8531 if (startp < low_bound || low_bound == -1) | |
| 8532 low_bound = startp; | |
| 8533 startp = new_startp; | |
| 8534 if (startp > BUF_ZV (b)) | |
| 8535 { | |
| 8536 w->line_cache_validation_override--; | |
| 8537 return; | |
| 8538 } | |
| 8539 } | |
| 8540 } | |
| 8541 | |
| 8542 assert (Dynarr_length (cache)); | |
| 8543 assert (from >= low_bound); | |
| 8544 | |
| 8545 /* Readjust the high_bound to account for any changes made while | |
| 8546 correcting the low_bound. */ | |
| 8547 high_bound = Dynarr_atp (cache, Dynarr_length (cache) - 1)->end; | |
| 8548 | |
| 8549 if (to > high_bound) | |
| 8550 { | |
| 665 | 8551 Charbpos startp = Dynarr_atp (cache, Dynarr_length (cache) - 1)->end + 1; |
| 428 | 8552 |
| 8553 do | |
| 8554 { | |
| 8555 regenerate_window (w, startp, point, CMOTION_DISP); | |
| 8556 update_internal_cache_list (w, CMOTION_DISP); | |
| 8557 | |
| 8558 /* See comment above about regenerate_window failing. */ | |
| 8559 assert (Dynarr_length (internal_cache)); | |
| 8560 | |
| 8561 Dynarr_add_many (cache, Dynarr_atp (internal_cache, 0), | |
| 8562 Dynarr_length (internal_cache)); | |
| 8563 high_bound = Dynarr_atp (cache, Dynarr_length (cache) - 1)->end; | |
| 8564 startp = high_bound + 1; | |
| 8565 } | |
| 8566 while (to > high_bound); | |
| 8567 } | |
| 8568 | |
| 8569 w->line_cache_validation_override--; | |
| 8570 assert (to <= high_bound); | |
| 8571 } | |
| 8572 | |
| 8573 | |
| 8574 /* Given x and y coordinates in characters, relative to a window, | |
| 8575 return the pixel location corresponding to those coordinates. The | |
| 8576 pixel location returned is the center of the given character | |
| 8577 position. The pixel values are generated relative to the window, | |
| 8578 not the frame. | |
| 8579 | |
| 8580 The modeline is considered to be part of the window. */ | |
| 8581 | |
| 8582 void | |
| 8583 glyph_to_pixel_translation (struct window *w, int char_x, int char_y, | |
| 8584 int *pix_x, int *pix_y) | |
| 8585 { | |
| 8586 display_line_dynarr *dla = window_display_lines (w, CURRENT_DISP); | |
| 8587 int num_disp_lines, modeline; | |
| 8588 Lisp_Object window; | |
| 8589 int defheight, defwidth; | |
| 8590 | |
| 793 | 8591 window = wrap_window (w); |
| 428 | 8592 default_face_height_and_width (window, &defheight, &defwidth); |
| 8593 | |
| 8594 /* If we get a bogus value indicating somewhere above or to the left of | |
| 8595 the window, use the first window line or character position | |
| 8596 instead. */ | |
| 8597 if (char_y < 0) | |
| 8598 char_y = 0; | |
| 8599 if (char_x < 0) | |
| 8600 char_x = 0; | |
| 8601 | |
| 8602 num_disp_lines = Dynarr_length (dla); | |
| 8603 modeline = 0; | |
| 8604 if (num_disp_lines) | |
| 8605 { | |
| 8606 if (Dynarr_atp (dla, 0)->modeline) | |
| 8607 { | |
| 8608 num_disp_lines--; | |
| 8609 modeline = 1; | |
| 8610 } | |
| 8611 } | |
| 8612 | |
| 8613 /* First check if the y position intersects the display lines. */ | |
| 8614 if (char_y < num_disp_lines) | |
| 8615 { | |
| 8616 struct display_line *dl = Dynarr_atp (dla, char_y + modeline); | |
| 8617 struct display_block *db = get_display_block_from_line (dl, TEXT); | |
| 8618 | |
| 8619 *pix_y = (dl->ypos - dl->ascent + | |
| 647 | 8620 ((dl->ascent + dl->descent - dl->clip) >> 1)); |
| 428 | 8621 |
| 8622 if (char_x < Dynarr_length (db->runes)) | |
| 8623 { | |
| 8624 struct rune *rb = Dynarr_atp (db->runes, char_x); | |
| 8625 | |
| 8626 *pix_x = rb->xpos + (rb->width >> 1); | |
| 8627 } | |
| 8628 else | |
| 8629 { | |
| 8630 int last_rune = Dynarr_length (db->runes) - 1; | |
| 8631 struct rune *rb = Dynarr_atp (db->runes, last_rune); | |
| 8632 | |
| 8633 char_x -= last_rune; | |
| 8634 | |
| 8635 *pix_x = rb->xpos + rb->width; | |
| 8636 *pix_x += ((char_x - 1) * defwidth); | |
| 8637 *pix_x += (defwidth >> 1); | |
| 8638 } | |
| 8639 } | |
| 8640 else | |
| 8641 { | |
| 8642 /* It didn't intersect, so extrapolate. #### For now, we include the | |
| 8643 modeline in this since we don't have true character positions in | |
| 8644 it. */ | |
| 8645 | |
| 8646 if (!Dynarr_length (w->face_cachels)) | |
| 8647 reset_face_cachels (w); | |
| 8648 | |
| 8649 char_y -= num_disp_lines; | |
| 8650 | |
| 8651 if (Dynarr_length (dla)) | |
| 8652 { | |
| 8653 struct display_line *dl = Dynarr_atp (dla, Dynarr_length (dla) - 1); | |
| 8654 *pix_y = dl->ypos + dl->descent - dl->clip; | |
| 8655 } | |
| 8656 else | |
| 8657 *pix_y = WINDOW_TEXT_TOP (w); | |
| 8658 | |
| 8659 *pix_y += (char_y * defheight); | |
| 8660 *pix_y += (defheight >> 1); | |
| 8661 | |
| 8662 *pix_x = WINDOW_TEXT_LEFT (w); | |
| 8663 /* Don't adjust by one because this is still the unadjusted value. */ | |
| 8664 *pix_x += (char_x * defwidth); | |
| 8665 *pix_x += (defwidth >> 1); | |
| 8666 } | |
| 8667 | |
| 8668 if (*pix_x > w->pixel_left + w->pixel_width) | |
| 8669 *pix_x = w->pixel_left + w->pixel_width; | |
| 8670 if (*pix_y > w->pixel_top + w->pixel_height) | |
| 8671 *pix_y = w->pixel_top + w->pixel_height; | |
| 8672 | |
| 8673 *pix_x -= w->pixel_left; | |
| 8674 *pix_y -= w->pixel_top; | |
| 8675 } | |
| 8676 | |
| 8677 /* Given a display line and a position, determine if there is a glyph | |
| 8678 there and return information about it if there is. */ | |
| 8679 | |
| 8680 static void | |
| 8681 get_position_object (struct display_line *dl, Lisp_Object *obj1, | |
| 8682 Lisp_Object *obj2, int x_coord, int *low_x_coord, | |
| 8683 int *high_x_coord) | |
| 8684 { | |
| 8685 struct display_block *db; | |
| 8686 int elt; | |
| 8687 int block = | |
| 8688 get_next_display_block (dl->bounds, dl->display_blocks, x_coord, 0); | |
| 8689 | |
| 8690 /* We use get_next_display_block to get the actual display block | |
| 8691 that would be displayed at x_coord. */ | |
| 8692 | |
| 8693 if (block == NO_BLOCK) | |
| 8694 return; | |
| 8695 else | |
| 8696 db = Dynarr_atp (dl->display_blocks, block); | |
| 8697 | |
| 8698 for (elt = 0; elt < Dynarr_length (db->runes); elt++) | |
| 8699 { | |
| 8700 struct rune *rb = Dynarr_atp (db->runes, elt); | |
| 8701 | |
| 8702 if (rb->xpos <= x_coord && x_coord < (rb->xpos + rb->width)) | |
| 8703 { | |
| 8704 if (rb->type == RUNE_DGLYPH) | |
| 8705 { | |
| 8706 *obj1 = rb->object.dglyph.glyph; | |
| 8707 *obj2 = rb->object.dglyph.extent; | |
| 8708 } | |
| 8709 else | |
| 8710 { | |
| 8711 *obj1 = Qnil; | |
| 8712 *obj2 = Qnil; | |
| 8713 } | |
| 8714 | |
| 8715 if (low_x_coord) | |
| 8716 *low_x_coord = rb->xpos; | |
| 8717 if (high_x_coord) | |
| 8718 *high_x_coord = rb->xpos + rb->width; | |
| 8719 | |
| 8720 return; | |
| 8721 } | |
| 8722 } | |
| 8723 } | |
| 8724 | |
| 8725 #define UPDATE_CACHE_RETURN \ | |
| 8726 do { \ | |
| 8727 d->pixel_to_glyph_cache.valid = 1; \ | |
| 8728 d->pixel_to_glyph_cache.low_x_coord = low_x_coord; \ | |
| 8729 d->pixel_to_glyph_cache.high_x_coord = high_x_coord; \ | |
| 8730 d->pixel_to_glyph_cache.low_y_coord = low_y_coord; \ | |
| 8731 d->pixel_to_glyph_cache.high_y_coord = high_y_coord; \ | |
| 8732 d->pixel_to_glyph_cache.frame = f; \ | |
| 8733 d->pixel_to_glyph_cache.col = *col; \ | |
| 8734 d->pixel_to_glyph_cache.row = *row; \ | |
| 8735 d->pixel_to_glyph_cache.obj_x = *obj_x; \ | |
| 8736 d->pixel_to_glyph_cache.obj_y = *obj_y; \ | |
| 8737 d->pixel_to_glyph_cache.w = *w; \ | |
| 826 | 8738 d->pixel_to_glyph_cache.charpos = *charpos; \ |
| 428 | 8739 d->pixel_to_glyph_cache.closest = *closest; \ |
| 8740 d->pixel_to_glyph_cache.modeline_closest = *modeline_closest; \ | |
| 8741 d->pixel_to_glyph_cache.obj1 = *obj1; \ | |
| 8742 d->pixel_to_glyph_cache.obj2 = *obj2; \ | |
| 8743 d->pixel_to_glyph_cache.retval = position; \ | |
| 8744 RETURN_SANS_WARNINGS position; \ | |
| 8745 } while (0) | |
| 8746 | |
| 8747 /* Given x and y coordinates in pixels relative to a frame, return | |
| 8748 information about what is located under those coordinates. | |
| 8749 | |
| 8750 The return value will be one of: | |
| 8751 | |
| 8752 OVER_TOOLBAR: over one of the 4 frame toolbars | |
| 8753 OVER_MODELINE: over a modeline | |
| 8754 OVER_BORDER: over an internal border | |
| 8755 OVER_NOTHING: over the text area, but not over text | |
| 8756 OVER_OUTSIDE: outside of the frame border | |
| 8757 OVER_TEXT: over text in the text area | |
| 8758 | |
| 8759 OBJ1 is one of | |
| 8760 | |
| 8761 -- a toolbar button | |
| 8762 -- a glyph | |
| 8763 -- nil if the coordinates are not over a glyph or a toolbar button. | |
| 8764 | |
| 8765 OBJ2 is one of | |
| 8766 | |
| 8767 -- an extent, if the coordinates are over a glyph in the text area | |
| 8768 -- nil otherwise. | |
| 8769 | |
| 8770 If the coordinates are over a glyph, OBJ_X and OBJ_Y give the | |
| 8771 equivalent coordinates relative to the upper-left corner of the glyph. | |
| 8772 | |
| 8773 If the coordinates are over a character, OBJ_X and OBJ_Y give the | |
| 8774 equivalent coordinates relative to the upper-left corner of the character. | |
| 8775 | |
| 8776 Otherwise, OBJ_X and OBJ_Y are undefined. | |
| 8777 */ | |
| 8778 | |
| 8779 int | |
| 8780 pixel_to_glyph_translation (struct frame *f, int x_coord, int y_coord, | |
| 8781 int *col, int *row, int *obj_x, int *obj_y, | |
| 826 | 8782 struct window **w, Charbpos *charpos, |
| 665 | 8783 Charbpos *closest, Charcount *modeline_closest, |
| 428 | 8784 Lisp_Object *obj1, Lisp_Object *obj2) |
| 8785 { | |
| 8786 struct device *d; | |
| 8787 struct pixel_to_glyph_translation_cache *cache; | |
| 8788 Lisp_Object window; | |
| 8789 int frm_left, frm_right, frm_top, frm_bottom; | |
| 8790 int low_x_coord, high_x_coord, low_y_coord, high_y_coord; | |
| 8791 int position = OVER_NOTHING; | |
| 8792 int device_check_failed = 0; | |
| 8793 display_line_dynarr *dla; | |
| 8794 | |
| 8795 /* This is a safety valve in case this got called with a frame in | |
| 8796 the middle of being deleted. */ | |
| 8797 if (!DEVICEP (f->device) || !DEVICE_LIVE_P (XDEVICE (f->device))) | |
| 8798 { | |
| 8799 device_check_failed = 1; | |
| 8800 d = NULL, cache = NULL; /* Warning suppression */ | |
| 8801 } | |
| 8802 else | |
| 8803 { | |
| 8804 d = XDEVICE (f->device); | |
| 8805 cache = &d->pixel_to_glyph_cache; | |
| 8806 } | |
| 8807 | |
| 8808 if (!device_check_failed | |
| 8809 && cache->valid | |
| 8810 && cache->frame == f | |
| 8811 && cache->low_x_coord <= x_coord | |
| 8812 && cache->high_x_coord > x_coord | |
| 8813 && cache->low_y_coord <= y_coord | |
| 8814 && cache->high_y_coord > y_coord) | |
| 8815 { | |
| 8816 *col = cache->col; | |
| 8817 *row = cache->row; | |
| 8818 *obj_x = cache->obj_x; | |
| 8819 *obj_y = cache->obj_y; | |
| 8820 *w = cache->w; | |
| 826 | 8821 *charpos = cache->charpos; |
| 428 | 8822 *closest = cache->closest; |
| 8823 *modeline_closest = cache->modeline_closest; | |
| 8824 *obj1 = cache->obj1; | |
| 8825 *obj2 = cache->obj2; | |
| 8826 | |
| 8827 return cache->retval; | |
| 8828 } | |
| 8829 else | |
| 8830 { | |
| 8831 *col = 0; | |
| 8832 *row = 0; | |
| 8833 *obj_x = 0; | |
| 8834 *obj_y = 0; | |
| 8835 *w = 0; | |
| 826 | 8836 *charpos = 0; |
| 428 | 8837 *closest = 0; |
| 8838 *modeline_closest = -1; | |
| 8839 *obj1 = Qnil; | |
| 8840 *obj2 = Qnil; | |
| 8841 | |
| 8842 low_x_coord = x_coord; | |
| 8843 high_x_coord = x_coord + 1; | |
| 8844 low_y_coord = y_coord; | |
| 8845 high_y_coord = y_coord + 1; | |
| 8846 } | |
| 8847 | |
| 8848 if (device_check_failed) | |
| 8849 return OVER_NOTHING; | |
| 8850 | |
| 8851 frm_left = FRAME_LEFT_BORDER_END (f); | |
| 8852 frm_right = FRAME_RIGHT_BORDER_START (f); | |
| 8853 frm_top = FRAME_TOP_BORDER_END (f); | |
| 8854 frm_bottom = FRAME_BOTTOM_BORDER_START (f); | |
| 8855 | |
| 8856 /* Check if the mouse is outside of the text area actually used by | |
| 8857 redisplay. */ | |
| 8858 if (y_coord < frm_top) | |
| 8859 { | |
| 8860 if (y_coord >= FRAME_TOP_BORDER_START (f)) | |
| 8861 { | |
| 8862 low_y_coord = FRAME_TOP_BORDER_START (f); | |
| 8863 high_y_coord = frm_top; | |
| 8864 position = OVER_BORDER; | |
| 8865 } | |
| 8866 else if (y_coord >= 0) | |
| 8867 { | |
| 8868 low_y_coord = 0; | |
| 8869 high_y_coord = FRAME_TOP_BORDER_START (f); | |
| 8870 position = OVER_TOOLBAR; | |
| 8871 } | |
| 8872 else | |
| 8873 { | |
| 8874 low_y_coord = y_coord; | |
| 8875 high_y_coord = 0; | |
| 8876 position = OVER_OUTSIDE; | |
| 8877 } | |
| 8878 } | |
| 8879 else if (y_coord >= frm_bottom) | |
| 8880 { | |
| 8881 if (y_coord < FRAME_BOTTOM_BORDER_END (f)) | |
| 8882 { | |
| 8883 low_y_coord = frm_bottom; | |
| 8884 high_y_coord = FRAME_BOTTOM_BORDER_END (f); | |
| 8885 position = OVER_BORDER; | |
| 8886 } | |
| 8887 else if (y_coord < FRAME_PIXHEIGHT (f)) | |
| 8888 { | |
| 8889 low_y_coord = FRAME_BOTTOM_BORDER_END (f); | |
| 8890 high_y_coord = FRAME_PIXHEIGHT (f); | |
| 8891 position = OVER_TOOLBAR; | |
| 8892 } | |
| 8893 else | |
| 8894 { | |
| 8895 low_y_coord = FRAME_PIXHEIGHT (f); | |
| 8896 high_y_coord = y_coord; | |
| 8897 position = OVER_OUTSIDE; | |
| 8898 } | |
| 8899 } | |
| 8900 | |
| 8901 if (position != OVER_TOOLBAR && position != OVER_BORDER) | |
| 8902 { | |
| 8903 if (x_coord < frm_left) | |
| 8904 { | |
| 8905 if (x_coord >= FRAME_LEFT_BORDER_START (f)) | |
| 8906 { | |
| 8907 low_x_coord = FRAME_LEFT_BORDER_START (f); | |
| 8908 high_x_coord = frm_left; | |
| 8909 position = OVER_BORDER; | |
| 8910 } | |
| 8911 else if (x_coord >= 0) | |
| 8912 { | |
| 8913 low_x_coord = 0; | |
| 8914 high_x_coord = FRAME_LEFT_BORDER_START (f); | |
| 8915 position = OVER_TOOLBAR; | |
| 8916 } | |
| 8917 else | |
| 8918 { | |
| 8919 low_x_coord = x_coord; | |
| 8920 high_x_coord = 0; | |
| 8921 position = OVER_OUTSIDE; | |
| 8922 } | |
| 8923 } | |
| 8924 else if (x_coord >= frm_right) | |
| 8925 { | |
| 8926 if (x_coord < FRAME_RIGHT_BORDER_END (f)) | |
| 8927 { | |
| 8928 low_x_coord = frm_right; | |
| 8929 high_x_coord = FRAME_RIGHT_BORDER_END (f); | |
| 8930 position = OVER_BORDER; | |
| 8931 } | |
| 8932 else if (x_coord < FRAME_PIXWIDTH (f)) | |
| 8933 { | |
| 8934 low_x_coord = FRAME_RIGHT_BORDER_END (f); | |
| 8935 high_x_coord = FRAME_PIXWIDTH (f); | |
| 8936 position = OVER_TOOLBAR; | |
| 8937 } | |
| 8938 else | |
| 8939 { | |
| 8940 low_x_coord = FRAME_PIXWIDTH (f); | |
| 8941 high_x_coord = x_coord; | |
| 8942 position = OVER_OUTSIDE; | |
| 8943 } | |
| 8944 } | |
| 8945 } | |
| 8946 | |
| 8947 #ifdef HAVE_TOOLBARS | |
| 8948 if (position == OVER_TOOLBAR) | |
| 8949 { | |
| 8950 *obj1 = toolbar_button_at_pixpos (f, x_coord, y_coord); | |
| 8951 *obj2 = Qnil; | |
| 8952 *w = 0; | |
| 8953 UPDATE_CACHE_RETURN; | |
| 8954 } | |
| 8955 #endif /* HAVE_TOOLBARS */ | |
| 8956 | |
| 8957 /* We still have to return the window the pointer is next to and its | |
| 8958 relative y position even if it is outside the x boundary. */ | |
| 8959 if (x_coord < frm_left) | |
| 8960 x_coord = frm_left; | |
| 8961 else if (x_coord > frm_right) | |
| 8962 x_coord = frm_right; | |
| 8963 | |
| 8964 /* Same in reverse. */ | |
| 8965 if (y_coord < frm_top) | |
| 8966 y_coord = frm_top; | |
| 8967 else if (y_coord > frm_bottom) | |
| 8968 y_coord = frm_bottom; | |
| 8969 | |
| 8970 /* Find what window the given coordinates are actually in. */ | |
| 8971 window = f->root_window; | |
| 8972 *w = find_window_by_pixel_pos (x_coord, y_coord, window); | |
| 8973 | |
| 8974 /* If we didn't find a window, we're done. */ | |
| 8975 if (!*w) | |
| 8976 { | |
| 8977 UPDATE_CACHE_RETURN; | |
| 8978 } | |
| 8979 else if (position != OVER_NOTHING) | |
| 8980 { | |
| 8981 *closest = 0; | |
| 8982 *modeline_closest = -1; | |
| 8983 | |
| 8984 if (high_y_coord <= frm_top || high_y_coord >= frm_bottom) | |
| 8985 { | |
| 8986 *w = 0; | |
| 8987 UPDATE_CACHE_RETURN; | |
| 8988 } | |
| 8989 } | |
| 8990 | |
| 8991 /* Check if the window is a minibuffer but isn't active. */ | |
| 8992 if (MINI_WINDOW_P (*w) && !minibuf_level) | |
| 8993 { | |
| 8994 /* Must reset the window value since some callers will ignore | |
| 4187 | 8995 the return value if it is set. */ |
| 428 | 8996 *w = 0; |
| 8997 UPDATE_CACHE_RETURN; | |
| 8998 } | |
| 8999 | |
| 9000 /* See if the point is over window vertical divider */ | |
| 9001 if (window_needs_vertical_divider (*w)) | |
| 9002 { | |
| 9003 int div_x_high = WINDOW_RIGHT (*w); | |
| 9004 int div_x_low = div_x_high - window_divider_width (*w); | |
| 9005 int div_y_high = WINDOW_BOTTOM (*w); | |
| 9006 int div_y_low = WINDOW_TOP (*w); | |
| 9007 | |
| 9008 if (div_x_low < x_coord && x_coord <= div_x_high && | |
| 9009 div_y_low < y_coord && y_coord <= div_y_high) | |
| 9010 { | |
| 9011 low_x_coord = div_x_low; | |
| 9012 high_x_coord = div_x_high; | |
| 9013 low_y_coord = div_y_low; | |
| 9014 high_y_coord = div_y_high; | |
| 9015 position = OVER_V_DIVIDER; | |
| 9016 UPDATE_CACHE_RETURN; | |
| 9017 } | |
| 9018 } | |
| 9019 | |
| 9020 dla = window_display_lines (*w, CURRENT_DISP); | |
| 9021 | |
| 9022 for (*row = 0; *row < Dynarr_length (dla); (*row)++) | |
| 9023 { | |
| 9024 int really_over_nothing = 0; | |
| 9025 struct display_line *dl = Dynarr_atp (dla, *row); | |
| 9026 | |
| 9027 if ((int) (dl->ypos - dl->ascent) <= y_coord | |
| 9028 && y_coord <= (int) (dl->ypos + dl->descent)) | |
| 9029 { | |
| 9030 int check_margin_glyphs = 0; | |
| 9031 struct display_block *db = get_display_block_from_line (dl, TEXT); | |
| 9032 struct rune *rb = 0; | |
| 9033 | |
| 9034 if (x_coord < dl->bounds.left_white | |
| 9035 || x_coord >= dl->bounds.right_white) | |
| 9036 check_margin_glyphs = 1; | |
| 9037 | |
| 9038 low_y_coord = dl->ypos - dl->ascent; | |
| 9039 high_y_coord = dl->ypos + dl->descent + 1; | |
| 9040 | |
| 9041 if (position == OVER_BORDER | |
| 9042 || position == OVER_OUTSIDE | |
| 9043 || check_margin_glyphs) | |
| 9044 { | |
| 9045 int x_check, left_bound; | |
| 9046 | |
| 9047 if (check_margin_glyphs) | |
| 9048 { | |
| 9049 x_check = x_coord; | |
| 9050 left_bound = dl->bounds.left_white; | |
| 9051 } | |
| 9052 else | |
| 9053 { | |
| 9054 x_check = high_x_coord; | |
| 9055 left_bound = frm_left; | |
| 9056 } | |
| 9057 | |
| 9058 if (Dynarr_length (db->runes)) | |
| 9059 { | |
| 9060 if (x_check <= left_bound) | |
| 9061 { | |
| 9062 if (dl->modeline) | |
| 826 | 9063 *modeline_closest = Dynarr_atp (db->runes, 0)->charpos; |
| 428 | 9064 else |
| 826 | 9065 *closest = Dynarr_atp (db->runes, 0)->charpos; |
| 428 | 9066 } |
| 9067 else | |
| 9068 { | |
| 9069 if (dl->modeline) | |
| 9070 *modeline_closest = | |
| 9071 Dynarr_atp (db->runes, | |
| 826 | 9072 Dynarr_length (db->runes) - 1)->charpos; |
| 428 | 9073 else |
| 9074 *closest = | |
| 9075 Dynarr_atp (db->runes, | |
| 826 | 9076 Dynarr_length (db->runes) - 1)->charpos; |
| 428 | 9077 } |
| 9078 | |
| 9079 if (dl->modeline) | |
| 9080 *modeline_closest += dl->offset; | |
| 9081 else | |
| 9082 *closest += dl->offset; | |
| 9083 } | |
| 9084 else | |
| 9085 { | |
| 9086 /* #### What should be here. */ | |
| 9087 if (dl->modeline) | |
| 9088 *modeline_closest = 0; | |
| 9089 else | |
| 9090 *closest = 0; | |
| 9091 } | |
| 9092 | |
| 9093 if (check_margin_glyphs) | |
| 9094 { | |
| 9095 if (x_coord < dl->bounds.left_in | |
| 9096 || x_coord >= dl->bounds.right_in) | |
| 9097 { | |
| 9098 /* If we are over the outside margins then we | |
| 4187 | 9099 know the loop over the text block isn't going |
| 9100 to accomplish anything. So we go ahead and | |
| 9101 set what information we can right here and | |
| 9102 return. */ | |
| 428 | 9103 (*row)--; |
| 9104 *obj_y = y_coord - (dl->ypos - dl->ascent); | |
| 9105 get_position_object (dl, obj1, obj2, x_coord, | |
| 9106 &low_x_coord, &high_x_coord); | |
| 9107 | |
| 9108 UPDATE_CACHE_RETURN; | |
| 9109 } | |
| 9110 } | |
| 9111 else | |
| 9112 UPDATE_CACHE_RETURN; | |
| 9113 } | |
| 9114 | |
| 9115 for (*col = 0; *col <= Dynarr_length (db->runes); (*col)++) | |
| 9116 { | |
| 9117 int past_end = (*col == Dynarr_length (db->runes)); | |
| 9118 | |
| 9119 if (!past_end) | |
| 9120 rb = Dynarr_atp (db->runes, *col); | |
| 9121 | |
| 9122 if (past_end || | |
| 9123 (rb->xpos <= x_coord && x_coord < rb->xpos + rb->width)) | |
| 9124 { | |
| 9125 if (past_end) | |
| 9126 { | |
| 9127 (*col)--; | |
| 9128 rb = Dynarr_atp (db->runes, *col); | |
| 9129 } | |
| 9130 | |
| 826 | 9131 *charpos = rb->charpos + dl->offset; |
| 428 | 9132 low_x_coord = rb->xpos; |
| 9133 high_x_coord = rb->xpos + rb->width; | |
| 9134 | |
| 9135 if (rb->type == RUNE_DGLYPH) | |
| 9136 { | |
| 9137 int elt = *col + 1; | |
| 9138 | |
| 9139 /* Find the first character after the glyph. */ | |
| 9140 while (elt < Dynarr_length (db->runes)) | |
| 9141 { | |
| 9142 if (Dynarr_atp (db->runes, elt)->type != RUNE_DGLYPH) | |
| 9143 { | |
| 9144 if (dl->modeline) | |
| 9145 *modeline_closest = | |
| 826 | 9146 (Dynarr_atp (db->runes, elt)->charpos + |
| 428 | 9147 dl->offset); |
| 9148 else | |
| 9149 *closest = | |
| 826 | 9150 (Dynarr_atp (db->runes, elt)->charpos + |
| 428 | 9151 dl->offset); |
| 9152 break; | |
| 9153 } | |
| 9154 | |
| 9155 elt++; | |
| 9156 } | |
| 9157 | |
| 9158 /* In this case we failed to find a non-glyph | |
| 4187 | 9159 character so we return the last position |
| 9160 displayed on the line. */ | |
| 428 | 9161 if (elt == Dynarr_length (db->runes)) |
| 9162 { | |
| 9163 if (dl->modeline) | |
| 826 | 9164 *modeline_closest = dl->end_charpos + dl->offset; |
| 428 | 9165 else |
| 826 | 9166 *closest = dl->end_charpos + dl->offset; |
| 428 | 9167 really_over_nothing = 1; |
| 9168 } | |
| 9169 } | |
| 9170 else | |
| 9171 { | |
| 9172 if (dl->modeline) | |
| 826 | 9173 *modeline_closest = rb->charpos + dl->offset; |
| 428 | 9174 else |
| 826 | 9175 *closest = rb->charpos + dl->offset; |
| 428 | 9176 } |
| 9177 | |
| 9178 if (dl->modeline) | |
| 9179 { | |
| 9180 *row = window_displayed_height (*w); | |
| 9181 | |
| 9182 if (position == OVER_NOTHING) | |
| 9183 position = OVER_MODELINE; | |
| 9184 | |
| 9185 if (rb->type == RUNE_DGLYPH) | |
| 9186 { | |
| 9187 *obj1 = rb->object.dglyph.glyph; | |
| 9188 *obj2 = rb->object.dglyph.extent; | |
| 9189 } | |
| 9190 else if (rb->type == RUNE_CHAR) | |
| 9191 { | |
| 9192 *obj1 = Qnil; | |
| 9193 *obj2 = Qnil; | |
| 9194 } | |
| 9195 else | |
| 9196 { | |
| 9197 *obj1 = Qnil; | |
| 9198 *obj2 = Qnil; | |
| 9199 } | |
| 9200 | |
| 9201 UPDATE_CACHE_RETURN; | |
| 9202 } | |
| 9203 else if (past_end | |
| 9204 || (rb->type == RUNE_CHAR | |
| 9205 && rb->object.chr.ch == '\n')) | |
| 9206 { | |
| 9207 (*row)--; | |
| 9208 /* At this point we may have glyphs in the right | |
| 4187 | 9209 inside margin. */ |
| 428 | 9210 if (check_margin_glyphs) |
| 9211 get_position_object (dl, obj1, obj2, x_coord, | |
| 9212 &low_x_coord, &high_x_coord); | |
| 9213 UPDATE_CACHE_RETURN; | |
| 9214 } | |
| 9215 else | |
| 9216 { | |
| 9217 (*row)--; | |
| 9218 if (rb->type == RUNE_DGLYPH) | |
| 9219 { | |
| 9220 *obj1 = rb->object.dglyph.glyph; | |
| 9221 *obj2 = rb->object.dglyph.extent; | |
| 9222 } | |
| 9223 else if (rb->type == RUNE_CHAR) | |
| 9224 { | |
| 9225 *obj1 = Qnil; | |
| 9226 *obj2 = Qnil; | |
| 9227 } | |
| 9228 else | |
| 9229 { | |
| 9230 *obj1 = Qnil; | |
| 9231 *obj2 = Qnil; | |
| 9232 } | |
| 9233 | |
| 9234 *obj_x = x_coord - rb->xpos; | |
| 9235 *obj_y = y_coord - (dl->ypos - dl->ascent); | |
| 9236 | |
| 9237 /* At this point we may have glyphs in the left | |
| 4187 | 9238 inside margin. */ |
| 428 | 9239 if (check_margin_glyphs) |
| 9240 get_position_object (dl, obj1, obj2, x_coord, 0, 0); | |
| 9241 | |
| 9242 if (position == OVER_NOTHING && !really_over_nothing) | |
| 9243 position = OVER_TEXT; | |
| 9244 | |
| 9245 UPDATE_CACHE_RETURN; | |
| 9246 } | |
| 9247 } | |
| 9248 } | |
| 9249 } | |
| 9250 } | |
| 9251 | |
| 9252 *row = Dynarr_length (dla) - 1; | |
| 9253 if (FRAME_WIN_P (f)) | |
| 9254 { | |
| 9255 int bot_elt = Dynarr_length (dla) - 1; | |
| 9256 | |
| 9257 if (bot_elt >= 0) | |
| 9258 { | |
| 9259 struct display_line *dl = Dynarr_atp (dla, bot_elt); | |
| 9260 int adj_area = y_coord - (dl->ypos + dl->descent); | |
| 9261 Lisp_Object lwin; | |
| 9262 int defheight; | |
| 9263 | |
| 793 | 9264 lwin = wrap_window (*w); |
| 428 | 9265 default_face_height_and_width (lwin, 0, &defheight); |
| 9266 | |
| 9267 *row += (adj_area / defheight); | |
| 9268 } | |
| 9269 } | |
| 9270 | |
| 9271 /* #### This should be checked out some more to determine what | |
| 9272 should really be going on. */ | |
| 9273 if (!MARKERP ((*w)->start[CURRENT_DISP])) | |
| 9274 *closest = 0; | |
| 9275 else | |
| 442 | 9276 *closest = end_of_last_line_may_error (*w, |
| 428 | 9277 marker_position ((*w)->start[CURRENT_DISP])); |
| 9278 *col = 0; | |
| 9279 UPDATE_CACHE_RETURN; | |
| 9280 } | |
| 9281 #undef UPDATE_CACHE_RETURN | |
| 9282 | |
| 9283 | |
| 9284 /***************************************************************************/ | |
| 9285 /* */ | |
| 9286 /* Lisp functions */ | |
| 9287 /* */ | |
| 9288 /***************************************************************************/ | |
| 9289 | |
| 9290 DEFUN ("redisplay-echo-area", Fredisplay_echo_area, 0, 0, 0, /* | |
| 9291 Ensure that all minibuffers are correctly showing the echo area. | |
| 9292 */ | |
| 9293 ()) | |
| 9294 { | |
| 9295 Lisp_Object devcons, concons; | |
| 9296 | |
| 1318 | 9297 if (in_display) |
| 9298 return Qnil; | |
| 9299 | |
| 428 | 9300 DEVICE_LOOP_NO_BREAK (devcons, concons) |
| 9301 { | |
| 9302 struct device *d = XDEVICE (XCAR (devcons)); | |
| 9303 Lisp_Object frmcons; | |
| 9304 | |
| 1279 | 9305 if (DEVICE_STREAM_P (d)) |
| 9306 continue; | |
| 9307 | |
| 428 | 9308 DEVICE_FRAME_LOOP (frmcons, d) |
| 9309 { | |
| 9310 struct frame *f = XFRAME (XCAR (frmcons)); | |
| 853 | 9311 int depth; |
| 428 | 9312 |
| 9313 if (FRAME_REPAINT_P (f) && FRAME_HAS_MINIBUF_P (f)) | |
| 9314 { | |
| 9315 Lisp_Object window = FRAME_MINIBUF_WINDOW (f); | |
| 442 | 9316 |
| 9317 MAYBE_DEVMETH (d, frame_output_begin, (f)); | |
| 9318 | |
| 428 | 9319 /* |
| 9320 * If the frame size has changed, there may be random | |
| 9321 * chud on the screen left from previous messages | |
| 9322 * because redisplay_frame hasn't been called yet. | |
| 9323 * Clear the screen to get rid of the potential mess. | |
| 9324 */ | |
| 9325 if (f->echo_area_garbaged) | |
| 9326 { | |
| 442 | 9327 MAYBE_DEVMETH (d, clear_frame, (f)); |
| 428 | 9328 f->echo_area_garbaged = 0; |
| 9329 } | |
| 853 | 9330 depth = enter_redisplay_critical_section (); |
| 428 | 9331 redisplay_window (window, 0); |
| 853 | 9332 exit_redisplay_critical_section (depth); |
| 442 | 9333 MAYBE_DEVMETH (d, frame_output_end, (f)); |
| 428 | 9334 } |
| 9335 } | |
| 9336 } | |
| 9337 | |
| 9338 return Qnil; | |
| 9339 } | |
| 9340 | |
| 9341 DEFUN ("redraw-frame", Fredraw_frame, 0, 2, 0, /* | |
| 9342 Clear frame FRAME and output again what is supposed to appear on it. | |
| 9343 FRAME defaults to the selected frame if omitted. | |
| 9344 Normally, redisplay is preempted as normal if input arrives. However, | |
| 9345 if optional second arg NO-PREEMPT is non-nil, redisplay will not stop for | |
| 9346 input and is guaranteed to proceed to completion. | |
| 9347 */ | |
| 9348 (frame, no_preempt)) | |
| 9349 { | |
| 9350 struct frame *f = decode_frame (frame); | |
| 9351 int count = specpdl_depth (); | |
| 9352 | |
| 9353 if (!NILP (no_preempt)) | |
| 853 | 9354 internal_bind_int (&disable_preemption, 1 + disable_preemption); |
| 428 | 9355 |
| 9356 f->clear = 1; | |
| 9357 redisplay_frame (f, 1); | |
| 9358 | |
| 442 | 9359 /* See the comment in Fredisplay_frame. */ |
| 9360 RESET_CHANGED_SET_FLAGS; | |
| 9361 | |
| 771 | 9362 return unbind_to (count); |
| 428 | 9363 } |
| 9364 | |
| 9365 DEFUN ("redisplay-frame", Fredisplay_frame, 0, 2, 0, /* | |
| 9366 Ensure that FRAME's contents are correctly displayed. | |
| 9367 This differs from `redraw-frame' in that it only redraws what needs to | |
| 9368 be updated, as opposed to unconditionally clearing and redrawing | |
| 9369 the frame. | |
| 9370 FRAME defaults to the selected frame if omitted. | |
| 9371 Normally, redisplay is preempted as normal if input arrives. However, | |
| 9372 if optional second arg NO-PREEMPT is non-nil, redisplay will not stop for | |
| 9373 input and is guaranteed to proceed to completion. | |
| 9374 */ | |
| 9375 (frame, no_preempt)) | |
| 9376 { | |
| 9377 struct frame *f = decode_frame (frame); | |
| 9378 int count = specpdl_depth (); | |
| 9379 | |
| 9380 if (!NILP (no_preempt)) | |
| 853 | 9381 internal_bind_int (&disable_preemption, 1 + disable_preemption); |
| 428 | 9382 |
| 9383 redisplay_frame (f, 1); | |
| 9384 | |
| 442 | 9385 /* If we don't reset the global redisplay flags here, subsequent |
| 9386 changes to the display will not get registered by redisplay | |
| 9387 because it thinks it already has registered changes. If you | |
| 9388 really knew what you were doing you could confuse redisplay by | |
| 9389 calling Fredisplay_frame while updating another frame. We assume | |
| 9390 that if you know what you are doing you will not be that | |
| 9391 stupid. */ | |
| 9392 RESET_CHANGED_SET_FLAGS; | |
| 9393 | |
| 771 | 9394 return unbind_to (count); |
| 428 | 9395 } |
| 9396 | |
| 9397 DEFUN ("redraw-device", Fredraw_device, 0, 2, 0, /* | |
| 9398 Clear device DEVICE and output again what is supposed to appear on it. | |
| 9399 DEVICE defaults to the selected device if omitted. | |
| 9400 Normally, redisplay is preempted as normal if input arrives. However, | |
| 9401 if optional second arg NO-PREEMPT is non-nil, redisplay will not stop for | |
| 9402 input and is guaranteed to proceed to completion. | |
| 9403 */ | |
| 9404 (device, no_preempt)) | |
| 9405 { | |
| 9406 struct device *d = decode_device (device); | |
| 9407 Lisp_Object frmcons; | |
| 9408 int count = specpdl_depth (); | |
| 9409 | |
| 9410 if (!NILP (no_preempt)) | |
| 853 | 9411 internal_bind_int (&disable_preemption, 1 + disable_preemption); |
| 428 | 9412 |
| 9413 DEVICE_FRAME_LOOP (frmcons, d) | |
| 9414 { | |
| 9415 XFRAME (XCAR (frmcons))->clear = 1; | |
| 9416 } | |
| 440 | 9417 redisplay_device (d, 0); |
| 428 | 9418 |
| 442 | 9419 /* See the comment in Fredisplay_frame. */ |
| 9420 RESET_CHANGED_SET_FLAGS; | |
| 9421 | |
| 771 | 9422 return unbind_to (count); |
| 428 | 9423 } |
| 9424 | |
| 9425 DEFUN ("redisplay-device", Fredisplay_device, 0, 2, 0, /* | |
| 9426 Ensure that DEVICE's contents are correctly displayed. | |
| 9427 This differs from `redraw-device' in that it only redraws what needs to | |
| 9428 be updated, as opposed to unconditionally clearing and redrawing | |
| 9429 the device. | |
| 9430 DEVICE defaults to the selected device if omitted. | |
| 9431 Normally, redisplay is preempted as normal if input arrives. However, | |
| 9432 if optional second arg NO-PREEMPT is non-nil, redisplay will not stop for | |
| 9433 input and is guaranteed to proceed to completion. | |
| 853 | 9434 |
| 9435 Note: If you simply want everything redisplayed, the current idiom is | |
| 9436 `(sit-for 0)'. | |
| 428 | 9437 */ |
| 9438 (device, no_preempt)) | |
| 9439 { | |
| 9440 struct device *d = decode_device (device); | |
| 9441 int count = specpdl_depth (); | |
| 9442 | |
| 9443 if (!NILP (no_preempt)) | |
| 853 | 9444 internal_bind_int (&disable_preemption, 1 + disable_preemption); |
| 428 | 9445 |
| 440 | 9446 redisplay_device (d, 0); |
| 428 | 9447 |
| 442 | 9448 /* See the comment in Fredisplay_frame. */ |
| 9449 RESET_CHANGED_SET_FLAGS; | |
| 9450 | |
| 771 | 9451 return unbind_to (count); |
| 428 | 9452 } |
| 9453 | |
| 9454 /* Big lie. Big lie. This will force all modelines to be updated | |
| 9455 regardless if the all flag is set or not. It remains in existence | |
| 9456 solely for backwards compatibility. */ | |
| 9457 DEFUN ("redraw-modeline", Fredraw_modeline, 0, 1, 0, /* | |
| 9458 Force the modeline of the current buffer to be redisplayed. | |
| 9459 With optional non-nil ALL, force redisplay of all modelines. | |
| 9460 */ | |
| 2286 | 9461 (UNUSED (all))) |
| 428 | 9462 { |
| 9463 MARK_MODELINE_CHANGED; | |
| 9464 return Qnil; | |
| 9465 } | |
| 9466 | |
| 9467 DEFUN ("force-cursor-redisplay", Fforce_cursor_redisplay, 0, 1, 0, /* | |
| 9468 Force an immediate update of the cursor on FRAME. | |
| 9469 FRAME defaults to the selected frame if omitted. | |
| 9470 */ | |
| 9471 (frame)) | |
| 9472 { | |
| 1279 | 9473 struct frame *f = decode_frame (frame); |
| 9474 | |
| 9475 if (!FRAME_STREAM_P (f)) | |
| 9476 redisplay_redraw_cursor (f, 1); | |
| 428 | 9477 return Qnil; |
| 9478 } | |
| 9479 | |
| 9480 | |
| 9481 /***************************************************************************/ | |
| 9482 /* */ | |
| 872 | 9483 /* Change flags */ |
| 428 | 9484 /* */ |
| 9485 /***************************************************************************/ | |
| 9486 | |
| 9487 static void | |
| 2286 | 9488 margin_width_changed_in_frame (Lisp_Object UNUSED (specifier), |
| 9489 struct frame *UNUSED (f), | |
| 9490 Lisp_Object UNUSED (oldval)) | |
| 428 | 9491 { |
| 9492 /* Nothing to be done? */ | |
| 9493 } | |
| 9494 | |
| 9495 int | |
| 2286 | 9496 redisplay_variable_changed (Lisp_Object UNUSED (sym), |
| 9497 Lisp_Object *UNUSED (val), | |
| 9498 Lisp_Object UNUSED (in_object), | |
| 9499 int UNUSED (flags)) | |
| 428 | 9500 { |
| 9501 /* #### clip_changed should really be renamed something like | |
| 9502 global_redisplay_change. */ | |
| 9503 MARK_CLIP_CHANGED; | |
| 9504 return 0; | |
| 9505 } | |
| 9506 | |
| 9507 /* This is called if the built-in glyphs have their properties | |
| 9508 changed. */ | |
| 9509 void | |
| 2286 | 9510 redisplay_glyph_changed (Lisp_Object UNUSED (glyph), |
| 9511 Lisp_Object UNUSED (property), Lisp_Object locale) | |
| 428 | 9512 { |
| 9513 if (WINDOWP (locale)) | |
| 9514 { | |
| 9515 MARK_FRAME_GLYPHS_CHANGED (XFRAME (WINDOW_FRAME (XWINDOW (locale)))); | |
| 9516 } | |
| 9517 else if (FRAMEP (locale)) | |
| 9518 { | |
| 9519 MARK_FRAME_GLYPHS_CHANGED (XFRAME (locale)); | |
| 9520 } | |
| 9521 else if (DEVICEP (locale)) | |
| 9522 { | |
| 9523 Lisp_Object frmcons; | |
| 9524 DEVICE_FRAME_LOOP (frmcons, XDEVICE (locale)) | |
| 9525 MARK_FRAME_GLYPHS_CHANGED (XFRAME (XCAR (frmcons))); | |
| 9526 } | |
| 9527 else if (CONSOLEP (locale)) | |
| 9528 { | |
| 9529 Lisp_Object frmcons, devcons; | |
| 9530 CONSOLE_FRAME_LOOP_NO_BREAK (frmcons, devcons, XCONSOLE (locale)) | |
| 9531 MARK_FRAME_GLYPHS_CHANGED (XFRAME (XCAR (frmcons))); | |
| 9532 } | |
| 9533 else /* global or buffer */ | |
| 9534 { | |
| 9535 Lisp_Object frmcons, devcons, concons; | |
| 9536 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons) | |
| 9537 MARK_FRAME_GLYPHS_CHANGED (XFRAME (XCAR (frmcons))); | |
| 9538 } | |
| 9539 } | |
| 9540 | |
| 9541 static void | |
| 2286 | 9542 text_cursor_visible_p_changed (Lisp_Object UNUSED (specifier), |
| 9543 struct window *w, Lisp_Object UNUSED (oldval)) | |
| 428 | 9544 { |
| 9545 if (XFRAME (w->frame)->init_finished) | |
| 9546 Fforce_cursor_redisplay (w->frame); | |
| 9547 } | |
| 9548 | |
| 872 | 9549 void |
| 9550 mark_buffers_changed (void) | |
| 9551 { | |
| 9552 MARK_TYPE_CHANGED (buffers); | |
| 9553 } | |
| 9554 | |
| 9555 void | |
| 9556 mark_clip_changed (void) | |
| 9557 { | |
| 9558 MARK_TYPE_CHANGED (clip); | |
| 9559 } | |
| 9560 | |
| 9561 void | |
| 9562 mark_extents_changed (void) | |
| 9563 { | |
| 9564 MARK_TYPE_CHANGED (extents); | |
| 9565 } | |
| 9566 | |
| 9567 void | |
| 9568 mark_icon_changed (void) | |
| 9569 { | |
| 9570 MARK_TYPE_CHANGED (icon); | |
| 9571 } | |
| 9572 | |
| 9573 void | |
| 9574 mark_menubar_changed (void) | |
| 9575 { | |
| 9576 MARK_TYPE_CHANGED (menubar); | |
| 9577 } | |
| 9578 | |
| 9579 void | |
| 9580 mark_modeline_changed (void) | |
| 9581 { | |
| 9582 MARK_TYPE_CHANGED (modeline); | |
| 9583 } | |
| 9584 | |
| 9585 void | |
| 9586 mark_point_changed (void) | |
| 9587 { | |
| 9588 MARK_TYPE_CHANGED (point); | |
| 9589 } | |
| 9590 | |
| 9591 void | |
| 9592 mark_toolbar_changed (void) | |
| 9593 { | |
| 9594 MARK_TYPE_CHANGED (toolbar); | |
| 9595 } | |
| 9596 | |
| 9597 void | |
| 9598 mark_gutter_changed (void) | |
| 9599 { | |
| 9600 MARK_TYPE_CHANGED (gutter); | |
| 9601 } | |
| 9602 | |
| 9603 void | |
| 9604 mark_glyphs_changed (void) | |
| 9605 { | |
| 9606 MARK_TYPE_CHANGED (glyphs); | |
| 9607 } | |
| 9608 | |
| 9609 void | |
| 9610 mark_subwindows_changed (void) | |
| 9611 { | |
| 9612 MARK_TYPE_CHANGED (subwindows); | |
| 9613 } | |
| 9614 | |
| 9615 void | |
| 9616 mark_subwindows_state_changed (void) | |
| 9617 { | |
| 9618 MARK_TYPE_CHANGED (subwindows_state); | |
| 9619 } | |
| 9620 | |
| 428 | 9621 #ifdef MEMORY_USAGE_STATS |
| 9622 | |
| 9623 | |
| 9624 /***************************************************************************/ | |
| 9625 /* */ | |
| 9626 /* memory usage computation */ | |
| 9627 /* */ | |
| 9628 /***************************************************************************/ | |
| 9629 | |
| 9630 static int | |
| 9631 compute_rune_dynarr_usage (rune_dynarr *dyn, struct overhead_stats *ovstats) | |
| 9632 { | |
| 9633 return dyn ? Dynarr_memory_usage (dyn, ovstats) : 0; | |
| 9634 } | |
| 9635 | |
| 9636 static int | |
| 9637 compute_display_block_dynarr_usage (display_block_dynarr *dyn, | |
| 9638 struct overhead_stats *ovstats) | |
| 9639 { | |
| 9640 int total, i; | |
| 9641 | |
| 9642 if (!dyn) | |
| 9643 return 0; | |
| 9644 | |
| 9645 total = Dynarr_memory_usage (dyn, ovstats); | |
| 9646 for (i = 0; i < Dynarr_largest (dyn); i++) | |
| 9647 total += compute_rune_dynarr_usage (Dynarr_at (dyn, i).runes, ovstats); | |
| 9648 | |
| 9649 return total; | |
| 9650 } | |
| 9651 | |
| 9652 static int | |
| 9653 compute_glyph_block_dynarr_usage (glyph_block_dynarr *dyn, | |
| 9654 struct overhead_stats *ovstats) | |
| 9655 { | |
| 9656 return dyn ? Dynarr_memory_usage (dyn, ovstats) : 0; | |
| 9657 } | |
| 9658 | |
| 9659 int | |
| 9660 compute_display_line_dynarr_usage (display_line_dynarr *dyn, | |
| 9661 struct overhead_stats *ovstats) | |
| 9662 { | |
| 9663 int total, i; | |
| 9664 | |
| 9665 if (!dyn) | |
| 9666 return 0; | |
| 9667 | |
| 9668 total = Dynarr_memory_usage (dyn, ovstats); | |
| 9669 for (i = 0; i < Dynarr_largest (dyn); i++) | |
| 9670 { | |
| 9671 struct display_line *dl = &Dynarr_at (dyn, i); | |
| 9672 total += compute_display_block_dynarr_usage(dl->display_blocks, ovstats); | |
| 9673 total += compute_glyph_block_dynarr_usage (dl->left_glyphs, ovstats); | |
| 9674 total += compute_glyph_block_dynarr_usage (dl->right_glyphs, ovstats); | |
| 9675 } | |
| 9676 | |
| 9677 return total; | |
| 9678 } | |
| 9679 | |
| 9680 int | |
| 9681 compute_line_start_cache_dynarr_usage (line_start_cache_dynarr *dyn, | |
| 9682 struct overhead_stats *ovstats) | |
| 9683 { | |
| 9684 return dyn ? Dynarr_memory_usage (dyn, ovstats) : 0; | |
| 9685 } | |
| 9686 | |
| 9687 #endif /* MEMORY_USAGE_STATS */ | |
| 9688 | |
| 1204 | 9689 #ifdef ERROR_CHECK_DISPLAY |
| 9690 | |
| 800 | 9691 static int |
| 2286 | 9692 sledgehammer_check_redisplay_structs_1 (struct window *w, |
| 9693 void *UNUSED (closure)) | |
| 800 | 9694 { |
| 9695 int i, j; | |
| 9696 display_line_dynarr *dl; | |
| 9697 | |
| 9698 dl = window_display_lines (w, CURRENT_DISP); | |
| 4187 | 9699 |
| 800 | 9700 for (i = 0; i < Dynarr_largest (dl); i++) |
| 9701 for (j = i + 1; j < Dynarr_largest (dl); j++) | |
| 9702 assert (Dynarr_atp (dl, i)->display_blocks != | |
| 9703 Dynarr_atp (dl, j)->display_blocks); | |
| 9704 | |
| 9705 dl = window_display_lines (w, DESIRED_DISP); | |
| 9706 | |
| 9707 for (i = 0; i < Dynarr_largest (dl); i++) | |
| 9708 for (j = i + 1; j < Dynarr_largest (dl); j++) | |
| 9709 assert (Dynarr_atp (dl, i)->display_blocks != | |
| 9710 Dynarr_atp (dl, j)->display_blocks); | |
| 9711 | |
| 9712 return 0; | |
| 9713 } | |
| 9714 | |
| 9715 static void | |
| 9716 sledgehammer_check_redisplay_structs (void) | |
| 9717 { | |
| 9718 map_windows (0, sledgehammer_check_redisplay_structs_1, NULL); | |
| 9719 } | |
| 9720 | |
| 1204 | 9721 #endif /* ERROR_CHECK_DISPLAY */ |
| 9722 | |
| 428 | 9723 |
| 9724 /***************************************************************************/ | |
| 9725 /* */ | |
| 9726 /* initialization */ | |
| 9727 /* */ | |
| 9728 /***************************************************************************/ | |
| 9729 | |
| 9730 void | |
| 9731 init_redisplay (void) | |
| 9732 { | |
| 9733 disable_preemption = 0; | |
| 9734 preemption_count = 0; | |
| 9735 | |
| 9736 #ifndef PDUMP | |
| 9737 if (!initialized) | |
| 9738 #endif | |
| 9739 { | |
| 440 | 9740 if (!cmotion_display_lines) |
| 9741 cmotion_display_lines = Dynarr_new (display_line); | |
| 867 | 9742 if (!mode_spec_ibyte_string) |
| 9743 mode_spec_ibyte_string = Dynarr_new (Ibyte); | |
| 440 | 9744 if (!formatted_string_extent_dynarr) |
| 9745 formatted_string_extent_dynarr = Dynarr_new (EXTENT); | |
| 9746 if (!formatted_string_extent_start_dynarr) | |
| 9747 formatted_string_extent_start_dynarr = Dynarr_new (Bytecount); | |
| 9748 if (!formatted_string_extent_end_dynarr) | |
| 9749 formatted_string_extent_end_dynarr = Dynarr_new (Bytecount); | |
| 9750 if (!internal_cache) | |
| 9751 internal_cache = Dynarr_new (line_start_cache); | |
| 428 | 9752 } |
| 9753 | |
|
4477
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4418
diff
changeset
|
9754 if (!initialized) |
| 428 | 9755 return; |
| 9756 | |
|
4477
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Aidan Kehoe <kehoea@parhasard.net>
parents:
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diff
changeset
|
9757 if (noninteractive) |
|
e34711681f30
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parents:
4418
diff
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|
9758 { |
|
e34711681f30
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parents:
4418
diff
changeset
|
9759 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
|
9760 return; |
|
e34711681f30
Don't determine whether to call general device-type code at startup,
Aidan Kehoe <kehoea@parhasard.net>
parents:
4418
diff
changeset
|
9761 } |
|
e34711681f30
Don't determine whether to call general device-type code at startup,
Aidan Kehoe <kehoea@parhasard.net>
parents:
4418
diff
changeset
|
9762 |
| 428 | 9763 /* If the user wants to use a window system, we shouldn't bother |
| 9764 initializing the terminal. This is especially important when the | |
| 9765 terminal is so dumb that emacs gives up before and doesn't bother | |
| 9766 using the window system. | |
| 9767 | |
| 9768 If the DISPLAY environment variable is set, try to use X, and die | |
| 9769 with an error message if that doesn't work. */ | |
| 9770 | |
| 9771 #ifdef HAVE_X_WINDOWS | |
| 9772 if (!strcmp (display_use, "x")) | |
| 9773 { | |
| 9774 /* Some stuff checks this way early. */ | |
| 9775 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
|
9776 Vinitial_device_type = Qx; |
| 428 | 9777 return; |
| 9778 } | |
| 9779 #endif /* HAVE_X_WINDOWS */ | |
| 9780 | |
| 462 | 9781 #ifdef HAVE_GTK |
| 9782 if (!strcmp (display_use, "gtk")) | |
| 9783 { | |
| 9784 Vwindow_system = Qgtk; | |
|
4477
e34711681f30
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4418
diff
changeset
|
9785 Vinitial_device_type = Qgtk; |
| 462 | 9786 return; |
| 9787 } | |
| 9788 #endif | |
| 9789 | |
| 428 | 9790 #ifdef HAVE_MS_WINDOWS |
| 9791 if (!strcmp (display_use, "mswindows")) | |
| 9792 { | |
| 9793 /* Some stuff checks this way early. */ | |
| 9794 Vwindow_system = Qmswindows; | |
|
4477
e34711681f30
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4418
diff
changeset
|
9795 Vinitial_device_type = Qmswindows; |
| 428 | 9796 return; |
| 9797 } | |
| 9798 #endif /* HAVE_MS_WINDOWS */ | |
| 9799 | |
| 9800 #ifdef HAVE_TTY | |
| 9801 /* If no window system has been specified, try to use the terminal. */ | |
| 9802 if (!isatty (0)) | |
| 9803 { | |
| 9804 stderr_out ("XEmacs: standard input is not a tty\n"); | |
| 9805 exit (1); | |
| 9806 } | |
| 9807 | |
| 9808 /* Look at the TERM variable */ | |
| 771 | 9809 if (!egetenv ("TERM")) |
| 428 | 9810 { |
| 9811 stderr_out ("Please set the environment variable TERM; see tset(1).\n"); | |
| 9812 exit (1); | |
| 9813 } | |
| 9814 | |
|
4477
e34711681f30
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4418
diff
changeset
|
9815 Vinitial_device_type = Qtty; |
| 428 | 9816 return; |
| 9817 #else /* not HAVE_TTY */ | |
| 9818 /* No DISPLAY specified, and no TTY support. */ | |
| 9819 stderr_out ("XEmacs: Cannot open display.\n\ | |
| 9820 Please set the environmental variable DISPLAY to an appropriate value.\n"); | |
| 9821 exit (1); | |
| 9822 #endif | |
| 9823 /* Unreached. */ | |
| 9824 } | |
| 9825 | |
| 9826 void | |
| 9827 syms_of_redisplay (void) | |
| 9828 { | |
| 563 | 9829 DEFSYMBOL (Qcursor_in_echo_area); |
| 9830 DEFSYMBOL (Qdisplay_warning_buffer); | |
| 9831 DEFSYMBOL (Qbar_cursor); | |
| 9832 DEFSYMBOL (Qtop_bottom); | |
| 9833 DEFSYMBOL (Qbuffer_list_changed_hook); | |
| 428 | 9834 |
| 9835 DEFSUBR (Fredisplay_echo_area); | |
| 9836 DEFSUBR (Fredraw_frame); | |
| 9837 DEFSUBR (Fredisplay_frame); | |
| 9838 DEFSUBR (Fredraw_device); | |
| 9839 DEFSUBR (Fredisplay_device); | |
| 9840 DEFSUBR (Fredraw_modeline); | |
| 9841 DEFSUBR (Fforce_cursor_redisplay); | |
| 9842 } | |
| 9843 | |
| 9844 void | |
| 9845 vars_of_redisplay (void) | |
| 9846 { | |
| 1292 | 9847 QSin_redisplay = build_msg_string ("(in redisplay)"); |
| 9848 staticpro (&QSin_redisplay); | |
| 428 | 9849 |
| 1318 | 9850 Vpost_redisplay_actions = Qnil; |
| 9851 staticpro (&Vpost_redisplay_actions); | |
| 9852 | |
| 428 | 9853 #if 0 |
| 9854 staticpro (&last_arrow_position); | |
| 9855 staticpro (&last_arrow_string); | |
| 9856 last_arrow_position = Qnil; | |
| 9857 last_arrow_string = Qnil; | |
| 9858 #endif /* 0 */ | |
| 9859 | |
| 9860 /* #### Probably temporary */ | |
| 9861 DEFVAR_INT ("redisplay-cache-adjustment", &cache_adjustment /* | |
| 9862 \(Temporary) Setting this will impact the performance of the internal | |
| 9863 line start cache. | |
| 9864 */ ); | |
| 9865 cache_adjustment = 2; | |
| 9866 | |
| 1268 | 9867 DEFVAR_INT ("maximum-preempts", &max_preempts /* |
| 9868 Maximum number of times redisplay can be preempted by user input. | |
| 9869 */ ); | |
| 9870 max_preempts = INIT_MAX_PREEMPTS; | |
| 9871 | |
| 428 | 9872 DEFVAR_INT_MAGIC ("pixel-vertical-clip-threshold", &vertical_clip /* |
| 9873 Minimum pixel height for clipped bottom display line. | |
| 9874 A clipped line shorter than this won't be displayed. | |
| 9875 */ , | |
| 9876 redisplay_variable_changed); | |
| 9877 vertical_clip = 5; | |
| 9878 | |
| 9879 DEFVAR_INT_MAGIC ("pixel-horizontal-clip-threshold", &horizontal_clip /* | |
| 9880 Minimum visible area for clipped glyphs at right boundary. | |
| 9881 Clipped glyphs shorter than this won't be displayed. | |
| 9882 Only pixmap glyph instances are currently allowed to be clipped. | |
| 9883 */ , | |
| 9884 redisplay_variable_changed); | |
| 9885 horizontal_clip = 5; | |
| 9886 | |
| 9887 DEFVAR_LISP ("global-mode-string", &Vglobal_mode_string /* | |
| 9888 String displayed by modeline-format's "%m" specification. | |
| 9889 */ ); | |
| 9890 Vglobal_mode_string = Qnil; | |
| 9891 | |
| 9892 DEFVAR_LISP_MAGIC ("overlay-arrow-position", &Voverlay_arrow_position /* | |
| 9893 Marker for where to display an arrow on top of the buffer text. | |
| 9894 This must be the beginning of a line in order to work. | |
| 9895 See also `overlay-arrow-string'. | |
| 9896 */ , | |
| 9897 redisplay_variable_changed); | |
| 9898 Voverlay_arrow_position = Qnil; | |
| 9899 | |
| 9900 DEFVAR_LISP_MAGIC ("overlay-arrow-string", &Voverlay_arrow_string /* | |
| 442 | 9901 String or glyph to display as an arrow. See also `overlay-arrow-position'. |
| 444 | 9902 \(Note that despite the name of this variable, it can be set to a glyph as |
| 442 | 9903 well as a string.) |
| 428 | 9904 */ , |
| 9905 redisplay_variable_changed); | |
| 9906 Voverlay_arrow_string = Qnil; | |
| 9907 | |
| 9908 DEFVAR_INT ("scroll-step", &scroll_step /* | |
| 9909 *The number of lines to try scrolling a window by when point moves out. | |
| 9910 If that fails to bring point back on frame, point is centered instead. | |
| 9911 If this is zero, point is always centered after it moves off screen. | |
| 9912 */ ); | |
| 9913 scroll_step = 0; | |
| 9914 | |
| 9915 DEFVAR_INT ("scroll-conservatively", &scroll_conservatively /* | |
| 9916 *Scroll up to this many lines, to bring point back on screen. | |
| 9917 */ ); | |
| 9918 scroll_conservatively = 0; | |
| 9919 | |
| 9920 DEFVAR_BOOL_MAGIC ("truncate-partial-width-windows", | |
| 9921 &truncate_partial_width_windows /* | |
| 9922 *Non-nil means truncate lines in all windows less than full frame wide. | |
| 9923 */ , | |
| 9924 redisplay_variable_changed); | |
| 9925 truncate_partial_width_windows = 1; | |
| 9926 | |
| 442 | 9927 DEFVAR_LISP ("visible-bell", &Vvisible_bell /* |
| 9928 *Non-nil substitutes a visual signal for the audible bell. | |
| 9929 | |
| 9930 Default behavior is to flash the whole screen. On some platforms, | |
| 9931 special effects are available using the following values: | |
| 9932 | |
| 3025 | 9933 `display' Flash the whole screen (ie, the default behavior). |
| 9934 `top-bottom' Flash only the top and bottom lines of the selected frame. | |
| 442 | 9935 |
| 9936 When effects are unavailable on a platform, the visual bell is the | |
| 9937 default, whole screen. (Currently only X supports any special effects.) | |
| 428 | 9938 */ ); |
| 442 | 9939 Vvisible_bell = Qnil; |
| 428 | 9940 |
| 9941 DEFVAR_BOOL ("no-redraw-on-reenter", &no_redraw_on_reenter /* | |
| 9942 *Non-nil means no need to redraw entire frame after suspending. | |
| 9943 A non-nil value is useful if the terminal can automatically preserve | |
| 9944 Emacs's frame display when you reenter Emacs. | |
| 9945 It is up to you to set this variable if your terminal can do that. | |
| 9946 */ ); | |
| 9947 no_redraw_on_reenter = 0; | |
| 9948 | |
| 9949 DEFVAR_LISP ("window-system", &Vwindow_system /* | |
| 9950 A symbol naming the window-system under which Emacs is running, | |
| 9951 such as `x', or nil if emacs is running on an ordinary terminal. | |
| 9952 | |
| 9953 Do not use this variable, except for GNU Emacs compatibility, as it | |
| 9954 gives wrong values in a multi-device environment. Use `console-type' | |
| 9955 instead. | |
| 9956 */ ); | |
| 9957 Vwindow_system = Qnil; | |
| 9958 | |
|
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9959 DEFVAR_CONST_LISP ("initial-device-type", &Vinitial_device_type /* |
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9960 The type of the first XEmacs device to be created. |
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9961 |
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9962 This is constant; it's used by the command line handling code to communicate |
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9963 to Lisp what type the initial device to be created should be. |
| 428 | 9964 */ ); |
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9965 Vinitial_device_type = Qnil; |
| 428 | 9966 |
| 9967 DEFVAR_BOOL ("cursor-in-echo-area", &cursor_in_echo_area /* | |
| 9968 Non-nil means put cursor in minibuffer, at end of any message there. | |
| 9969 */ ); | |
| 9970 cursor_in_echo_area = 0; | |
| 9971 | |
| 9972 /* #### Shouldn't this be generalized as follows: | |
| 9973 | |
| 9974 if nil, use block cursor. | |
| 9975 if a number, use a bar cursor of that width. | |
| 9976 Otherwise, use a 1-pixel bar cursor. | |
| 9977 | |
| 9978 #### Or better yet, this variable should be trashed entirely | |
| 9979 (use a Lisp-magic variable to maintain compatibility) | |
| 9980 and a specifier `cursor-shape' added, which allows a block | |
| 9981 cursor, a bar cursor, a flashing block or bar cursor, | |
| 9982 maybe a caret cursor, etc. */ | |
| 9983 | |
| 9984 DEFVAR_LISP ("bar-cursor", &Vbar_cursor /* | |
| 448 | 9985 *Use vertical bar cursor if non-nil. If t width is 1 pixel, otherwise 2. |
| 428 | 9986 */ ); |
| 9987 Vbar_cursor = Qnil; | |
| 9988 | |
| 442 | 9989 DEFVAR_LISP ("buffer-list-changed-hook", &Vbuffer_list_changed_hook /* |
| 9990 Function or functions to call when a frame's buffer list has changed. | |
| 9991 This is called during redisplay, before redisplaying each frame. | |
| 9992 Functions on this hook are called with one argument, the frame. | |
| 9993 */ ); | |
| 9994 Vbuffer_list_changed_hook = Qnil; | |
| 9995 | |
| 428 | 9996 DEFVAR_INT ("display-warning-tick", &display_warning_tick /* |
| 9997 Bump this to tell the C code to call `display-warning-buffer' | |
| 9998 at next redisplay. You should not normally change this; the function | |
| 9999 `display-warning' automatically does this at appropriate times. | |
| 10000 */ ); | |
| 10001 display_warning_tick = 0; | |
| 10002 | |
| 10003 DEFVAR_BOOL ("inhibit-warning-display", &inhibit_warning_display /* | |
| 10004 Non-nil means inhibit display of warning messages. | |
| 10005 You should *bind* this, not set it. Any pending warning messages | |
| 10006 will be displayed when the binding no longer applies. | |
| 10007 */ ); | |
| 10008 /* reset to 0 by startup.el after the splash screen has displayed. | |
| 10009 This way, the warnings don't obliterate the splash screen. */ | |
| 10010 inhibit_warning_display = 1; | |
| 10011 | |
| 10012 DEFVAR_BOOL ("column-number-start-at-one", &column_number_start_at_one /* | |
| 10013 *Non-nil means column display number starts at 1. | |
| 10014 */ ); | |
| 10015 column_number_start_at_one = 0; | |
| 10016 } | |
| 10017 | |
| 10018 void | |
| 10019 specifier_vars_of_redisplay (void) | |
| 10020 { | |
| 10021 DEFVAR_SPECIFIER ("left-margin-width", &Vleft_margin_width /* | |
| 10022 *Width of left margin. | |
| 10023 This is a specifier; use `set-specifier' to change it. | |
| 10024 */ ); | |
| 10025 Vleft_margin_width = Fmake_specifier (Qnatnum); | |
| 10026 set_specifier_fallback (Vleft_margin_width, list1 (Fcons (Qnil, Qzero))); | |
| 10027 set_specifier_caching (Vleft_margin_width, | |
| 438 | 10028 offsetof (struct window, left_margin_width), |
| 428 | 10029 some_window_value_changed, |
| 438 | 10030 offsetof (struct frame, left_margin_width), |
| 444 | 10031 margin_width_changed_in_frame, 0); |
| 428 | 10032 |
| 10033 DEFVAR_SPECIFIER ("right-margin-width", &Vright_margin_width /* | |
| 10034 *Width of right margin. | |
| 10035 This is a specifier; use `set-specifier' to change it. | |
| 10036 */ ); | |
| 10037 Vright_margin_width = Fmake_specifier (Qnatnum); | |
| 10038 set_specifier_fallback (Vright_margin_width, list1 (Fcons (Qnil, Qzero))); | |
| 10039 set_specifier_caching (Vright_margin_width, | |
| 438 | 10040 offsetof (struct window, right_margin_width), |
| 428 | 10041 some_window_value_changed, |
| 438 | 10042 offsetof (struct frame, right_margin_width), |
| 444 | 10043 margin_width_changed_in_frame, 0); |
| 428 | 10044 |
| 10045 DEFVAR_SPECIFIER ("minimum-line-ascent", &Vminimum_line_ascent /* | |
| 10046 *Minimum ascent height of lines. | |
| 10047 This is a specifier; use `set-specifier' to change it. | |
| 10048 */ ); | |
| 10049 Vminimum_line_ascent = Fmake_specifier (Qnatnum); | |
| 10050 set_specifier_fallback (Vminimum_line_ascent, list1 (Fcons (Qnil, Qzero))); | |
| 10051 set_specifier_caching (Vminimum_line_ascent, | |
| 438 | 10052 offsetof (struct window, minimum_line_ascent), |
| 428 | 10053 some_window_value_changed, |
| 444 | 10054 0, 0, 0); |
| 428 | 10055 |
| 10056 DEFVAR_SPECIFIER ("minimum-line-descent", &Vminimum_line_descent /* | |
| 10057 *Minimum descent height of lines. | |
| 10058 This is a specifier; use `set-specifier' to change it. | |
| 10059 */ ); | |
| 10060 Vminimum_line_descent = Fmake_specifier (Qnatnum); | |
| 10061 set_specifier_fallback (Vminimum_line_descent, list1 (Fcons (Qnil, Qzero))); | |
| 10062 set_specifier_caching (Vminimum_line_descent, | |
| 438 | 10063 offsetof (struct window, minimum_line_descent), |
| 428 | 10064 some_window_value_changed, |
| 444 | 10065 0, 0, 0); |
| 428 | 10066 |
| 10067 DEFVAR_SPECIFIER ("use-left-overflow", &Vuse_left_overflow /* | |
| 10068 *Non-nil means use the left outside margin as extra whitespace when | |
| 3025 | 10069 displaying `whitespace' or `inside-margin' glyphs. |
| 428 | 10070 This is a specifier; use `set-specifier' to change it. |
| 10071 */ ); | |
| 10072 Vuse_left_overflow = Fmake_specifier (Qboolean); | |
| 10073 set_specifier_fallback (Vuse_left_overflow, list1 (Fcons (Qnil, Qnil))); | |
| 10074 set_specifier_caching (Vuse_left_overflow, | |
| 438 | 10075 offsetof (struct window, use_left_overflow), |
| 428 | 10076 some_window_value_changed, |
| 444 | 10077 0, 0, 0); |
| 428 | 10078 |
| 10079 DEFVAR_SPECIFIER ("use-right-overflow", &Vuse_right_overflow /* | |
| 10080 *Non-nil means use the right outside margin as extra whitespace when | |
| 3025 | 10081 displaying `whitespace' or `inside-margin' glyphs. |
| 428 | 10082 This is a specifier; use `set-specifier' to change it. |
| 10083 */ ); | |
| 10084 Vuse_right_overflow = Fmake_specifier (Qboolean); | |
| 10085 set_specifier_fallback (Vuse_right_overflow, list1 (Fcons (Qnil, Qnil))); | |
| 10086 set_specifier_caching (Vuse_right_overflow, | |
| 438 | 10087 offsetof (struct window, use_right_overflow), |
| 428 | 10088 some_window_value_changed, |
| 444 | 10089 0, 0, 0); |
| 428 | 10090 |
| 10091 DEFVAR_SPECIFIER ("text-cursor-visible-p", &Vtext_cursor_visible_p /* | |
| 10092 *Non-nil means the text cursor is visible (this is usually the case). | |
| 10093 This is a specifier; use `set-specifier' to change it. | |
| 10094 */ ); | |
| 10095 Vtext_cursor_visible_p = Fmake_specifier (Qboolean); | |
| 10096 set_specifier_fallback (Vtext_cursor_visible_p, list1 (Fcons (Qnil, Qt))); | |
| 10097 set_specifier_caching (Vtext_cursor_visible_p, | |
| 438 | 10098 offsetof (struct window, text_cursor_visible_p), |
| 428 | 10099 text_cursor_visible_p_changed, |
| 444 | 10100 0, 0, 0); |
| 428 | 10101 |
| 10102 } |