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1 /* Redisplay data structures.
2 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois.
3 Copyright (C) 1996 Chuck Thompson.
4 Copyright (C) 1995, 1996 Ben Wing.
5
6 This file is part of XEmacs.
7
8 XEmacs is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by the
10 Free Software Foundation; either version 2, or (at your option) any
11 later version.
12
13 XEmacs is distributed in the hope that it will be useful, but WITHOUT
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with XEmacs; see the file COPYING. If not, write to
20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
22
23 /* Synched up with: Not in FSF. */
24
25 #ifndef _XEMACS_REDISPLAY_H_
26 #define _XEMACS_REDISPLAY_H_
27
28 /* Redisplay DASSERT types */
29 #define DB_DISP_POS 1
30 #define DB_DISP_TEXT_LAYOUT 2
31 #define DB_DISP_REDISPLAY 4
32
33 /* These are the possible return values from pixel_to_glyph_translation. */
34 #define OVER_MODELINE 0
35 #define OVER_TEXT 1
36 #define OVER_OUTSIDE 2
37 #define OVER_NOTHING 3
38 #define OVER_BORDER 4
39 #define OVER_TOOLBAR 5
40 #define OVER_V_DIVIDER 6
41
42 #define NO_BLOCK -1
43
44 /* Imagine that the text in the buffer is displayed on a piece of paper
45 the width of the frame and very very tall. The line start cache is
46 an array of struct line_start_cache's, describing the start and
47 end buffer positions for a contiguous set of lines on that piece
48 of paper. */
49
50 typedef struct line_start_cache line_start_cache;
51 struct line_start_cache
52 {
53 Bufpos start, end;
54 int height;
55 };
56
57 typedef struct
58 {
59 Dynarr_declare (line_start_cache);
60 } line_start_cache_dynarr;
61
62 /* The possible types of runes.
63
64 #### The Lisp_Glyph type is broken. There should instead be a pixmap
65 type. Currently the device-specific output routines have to worry
66 about whether the glyph is textual or not, etc. For Mule this is
67 a big problem because you might need multiple fonts to display the
68 text. It also eliminates optimizations that could come from glumping
69 the text of multiple text glyphs together -- this makes displaying
70 binary files (with lots of control chars, etc.) very very slow. */
71
72 #define RUNE_BLANK 0
73 #define RUNE_CHAR 1
74 #define RUNE_DGLYPH 2
75 #define RUNE_HLINE 3
76 #define RUNE_VLINE 4
77
78 #define CURSOR_ON 0
79 #define CURSOR_OFF 1
80 #define NO_CURSOR 2
81 #define NEXT_CURSOR 3
82 #define IGNORE_CURSOR 4
83
84 #define DEFAULT_INDEX (face_index) 0
85 #define MODELINE_INDEX (face_index) 1
86
87 /* A rune is a single display element, such as a printable character
88 or pixmap. Any single character in a buffer has one or more runes
89 (or zero, if the character is invisible) corresponding to it.
90 (Printable characters typically have one rune associated with them,
91 but control characters have two -- a ^ and a letter -- and other
92 non-printing characters (those displayed in octal) have four. */
93
94 /* WARNING! In compare_runes (one of the most heavily used functions)
95 two runes are compared. So please be careful with changes to this
96 structure. See comments in compare_runes.
97
98 #### This should really be made smaller.
99 */
100
101 typedef struct rune rune;
102 struct rune
103 {
104 face_index findex; /* face rune is displayed with. The
105 face_index is an index into a
106 window-specific array of face cache
107 elements. Each face cache element
108 corresponds to one "merged face"
109 (the result of merging all the
110 faces that overlap the rune) and
111 contains the instance values for
112 each of the face properties in this
113 particular window. */
114
115 Bufpos bufpos; /* buffer position this rune is displaying;
116 for the modeline, the value here is a
117 Charcount, but who's looking? */
118 Bufpos endpos; /* if set this rune covers a range of pos */
119 /* #### Chuck, what does it mean for a rune
120 to cover a range of pos? I don't get
121 this. */
122 /* #### This isn't used as an rvalue anywhere!
123 remove! */
124
125
126 short xpos; /* horizontal starting position in pixels */
127 short width; /* pixel width of rune */
128
129
130 unsigned char cursor_type; /* is this rune covered by the cursor? */
131 unsigned char type; /* type of rune object */
132 /* We used to do bitfields here, but if I
133 (JV) count correctly that doesn't matter
134 for the size of the structure. All the bit
135 fiddling _does_ slow down redisplay by
136 about 10%. So don't do that */
137
138 union /* Information specific to the type of rune */
139 {
140 /* #### GLyps are are. Is it really necessary to waste 8 bytes on every
141 rune for that?! */
142 /* DGLYPH */
143 struct
144 {
145 Lisp_Object glyph;
146 Lisp_Object extent; /* extent rune is attached to, if any.
147 If this is a rune in the modeline
148 then this might be nil. */
149
150 int xoffset; /* Number of pixels that need to be
151 chopped off the left of the glyph.
152 This has the effect of shifting the
153 glyph to the left while still clipping
154 at XPOS. */
155 } dglyph;
156
157 /* CHAR */
158 struct
159 {
160 Emchar ch; /* Character of this rune. */
161 } chr;
162
163 /* HLINE */
164 struct
165 {
166 short thickness; /* how thick to make hline */
167 short yoffset; /* how far down from top of line to put top */
168 } hline;
169 } object; /* actual rune object */
170 };
171
172 typedef struct
173 {
174 Dynarr_declare (rune);
175 } rune_dynarr;
176
177 /* These must have distinct values. Note that the ordering actually
178 represents priority levels. TEXT has the lowest priority level. */
179 enum display_type
180 {
181 TEXT,
182 LEFT_OUTSIDE_MARGIN,
183 LEFT_INSIDE_MARGIN,
184 RIGHT_INSIDE_MARGIN,
185 RIGHT_OUTSIDE_MARGIN,
186 OVERWRITE
187 };
188
189 /* A display block represents a run of text on a single line.
190 Apparently there is only one display block per line for each
191 of the types listed in `enum display_type'.
192
193 A display block consists mostly of an array of runes, one per
194 atomic display element (printable character, pixmap, etc.). */
195
196 /* #### Yuckity yuckity yuck yuck yuck yuck yuck!!
197
198 Chuck, I think you should redo this. It should not be the
199 responsibility of the device-specific code to worry about
200 the different faces. The generic stuff in redisplay-output.c
201 should glump things up into sub-blocks, each of which
202 corresponds to a single pixmap or a single run of text in
203 the same font.
204
205 It might still make sense for the device-specific output routine
206 to get passed an entire display line. That way, it can make
207 calls to XDrawText() (which draws multiple runs of single-font
208 data) instead of XDrawString(). The reason for this is to
209 reduce the amount of X traffic, which will help things significantly
210 on a slow line. */
211
212 typedef struct display_block display_block;
213 struct display_block
214 {
215 enum display_type type; /* type of display block */
216
217 int start_pos; /* starting pixel position of block */
218 int end_pos; /* ending pixel position of block */
219
220 rune_dynarr *runes; /* Dynamic array of runes */
221 };
222
223 typedef struct
224 {
225 Dynarr_declare (display_block);
226 } display_block_dynarr;
227
228 typedef struct layout_bounds_type
229 {
230 int left_out;
231 int left_in;
232 int left_white;
233 int right_white;
234 int right_in;
235 int right_out;
236 } layout_bounds;
237
238 typedef struct glyph_block glyph_block;
239 struct glyph_block
240 {
241 Lisp_Object glyph;
242 Lisp_Object extent;
243 /* The rest are only used by margin routines. */
244 face_index findex;
245 int active;
246 int width;
247 };
248
249 typedef struct
250 {
251 Dynarr_declare (glyph_block);
252 } glyph_block_dynarr;
253
254 /*************************************************************************/
255 /* display lines */
256 /*************************************************************************/
257
258 /* Modeline commentary: IMO the modeline is handled very badly, we
259 special case virtually *everything* in the redisplay routines for
260 the modeline. The fact that dl->bufpos can be either a buffer
261 position or a char count highlights this. There is no abstraction at
262 all that I can find and it means that the code is made very ugly as
263 a result. Either we should treat the modeline *entirely* separately,
264 or we should abstract to something that applies equally well to the
265 modeline and to buffer text, the things are not enormously different
266 after all and handling them identically at some level would
267 eliminate some bugs that still exist (mainly to do with modeline
268 handling). This problem doesn't help trying to implement gutters
269 which are somewhere in between buffer text and modeline text.
270
271 Redisplay commentary: Everything in redisplay is tied very tightly
272 to the things that are being displayed, and the context,
273 e.g. buffers and windows. According to Chuck this is so that we can
274 get speed, which seems fine to me, however this usage is extended
275 too far down the redispay routines IMO. At some level there should
276 be functions that know how to display strings with extents and
277 faces, regardless of buffer etc. After all the window system does
278 not care. <andy@xemacs.org> */
279
280 typedef struct display_line display_line;
281 struct display_line
282 {
283 short ypos; /* vertical position in pixels
284 of the baseline for this line. */
285 unsigned short ascent, descent; /* maximum values for this line.
286 The ascent is the number of
287 pixels above the baseline, and
288 the descent is the number of
289 pixels below the baseline.
290 The descent includes the baseline
291 pixel-row itself, I think. */
292 unsigned short clip; /* amount of bottom of line to clip
293 in pixels.*/
294 unsigned short top_clip; /* amount of top of line to clip
295 in pixels.*/
296 Bufpos bufpos; /* first buffer position on line */
297 Bufpos end_bufpos; /* last buffer position on line */
298 Charcount offset; /* adjustment to bufpos vals */
299 Charcount num_chars; /* # of chars on line
300 including expansion of tabs
301 and control chars */
302 int cursor_elt; /* rune block of TEXT display
303 block cursor is at or -1 */
304 char used_prop_data; /* can't incrementally update if line
305 used propagation data */
306
307 layout_bounds bounds; /* line boundary positions */
308
309 char modeline; /* t if this line is a modeline */
310
311 /* Dynamic array of display blocks */
312 display_block_dynarr *display_blocks;
313
314 /* Dynamic arrays of left and right glyph blocks */
315 glyph_block_dynarr *left_glyphs;
316 glyph_block_dynarr *right_glyphs;
317
318 face_index left_margin_findex;
319 face_index right_margin_findex;
320 face_index default_findex;
321 };
322
323 #define DISPLAY_LINE_HEIGHT(dl) \
324 (dl->ascent + dl->descent - (dl->clip + dl->top_clip))
325 #define DISPLAY_LINE_YPOS(dl) \
326 (dl->ypos - (dl->ascent - dl->top_clip))
327 #define DISPLAY_LINE_YEND(dl) \
328 ((dl->ypos + dl->descent) - dl->clip)
329
330 typedef struct
331 {
332 Dynarr_declare (display_line);
333 } display_line_dynarr;
334
335 /* The following two structures are used to represent an area to
336 displayed and where to display it. Using these two structures all
337 combinations of clipping and position can be accommodated. */
338
339 /* This represents an area to be displayed into. */
340 typedef struct display_box display_box;
341 struct display_box
342 {
343 int xpos; /* absolute horizontal position of area */
344 int ypos; /* absolute vertical position of area */
345 int width, height;
346 };
347
348 /* This represents the area from a glyph to be displayed. */
349 typedef struct display_glyph_area display_glyph_area;
350 struct display_glyph_area
351 {
352 int xoffset; /* horizontal offset of the glyph, +ve means
353 display the glyph with x offset by xoffset,
354 -ve means display starting xoffset into the
355 glyph. */
356 int yoffset; /* vertical offset of the glyph, +ve means
357 display the glyph with y offset by yoffset,
358 -ve means display starting xoffset into the
359 glyph. */
360 int width, height; /* width and height of glyph to display. */
361 };
362
363 /* It could be argued that the following two structs belong in
364 extents.h, but they're only used by redisplay and it simplifies
365 the header files to put them here. */
366
367 typedef struct
368 {
369 Dynarr_declare (EXTENT);
370 } EXTENT_dynarr;
371
372 struct font_metric_info
373 {
374 int width;
375 int height; /* always ascent + descent; for convenience */
376 int ascent;
377 int descent;
378
379 int proportional_p;
380 };
381
382 /* NOTE NOTE NOTE: Currently the positions in an extent fragment
383 structure are Bytind's, not Bufpos's. This could change. */
384
385 struct extent_fragment
386 {
387 Lisp_Object object; /* buffer or string */
388 struct frame *frm;
389 Bytind pos, end;
390 EXTENT_dynarr *extents;
391 glyph_block_dynarr *begin_glyphs, *end_glyphs;
392 unsigned int invisible:1;
393 unsigned int invisible_ellipses:1;
394 unsigned int previously_invisible:1;
395 unsigned int invisible_ellipses_already_displayed:1;
396 };
397
398 #define EDGE_TOP 1
399 #define EDGE_LEFT 2
400 #define EDGE_BOTTOM 4
401 #define EDGE_RIGHT 8
402 #define EDGE_ALL (EDGE_TOP | EDGE_LEFT | EDGE_BOTTOM | EDGE_RIGHT)
403
404
405 /*************************************************************************/
406 /* change flags */
407 /*************************************************************************/
408
409 /* Quick flags to signal redisplay. redisplay() sets them all to 0
410 when it finishes. If none of them are set when it starts, it
411 assumes that nothing needs to be done. Functions that make a change
412 that is (potentially) visible on the screen should set the
413 appropriate flag.
414
415 If any of these flags are set, redisplay will look more carefully
416 to see if anything has really changed. */
417
418 /* non-nil if the contents of a buffer have changed since the last time
419 redisplay completed */
420 extern int buffers_changed;
421 extern int buffers_changed_set;
422
423 /* Nonzero if head_clip or tail_clip of a buffer has changed
424 since last redisplay that finished */
425 extern int clip_changed;
426 extern int clip_changed_set;
427
428 /* non-nil if any extent has changed since the last time redisplay completed */
429 extern int extents_changed;
430 extern int extents_changed_set;
431
432 /* non-nil if any face has changed since the last time redisplay completed */
433 extern int faces_changed;
434
435 /* Nonzero means one or more frames have been marked as garbaged */
436 extern int frame_changed;
437
438 /* True if any of the builtin display glyphs (continuation,
439 hscroll, control-arrow, etc) is in need of updating
440 somewhere. */
441 extern int glyphs_changed;
442 extern int glyphs_changed_set;
443
444 /* True if any displayed subwindow is in need of updating
445 somewhere. */
446 extern int subwindows_changed;
447 extern int subwindows_changed_set;
448
449 /* True if any displayed subwindow is in need of updating
450 somewhere. */
451 extern int subwindows_state_changed;
452 extern int subwindows_state_changed_set;
453
454 /* True if an icon is in need of updating somewhere. */
455 extern int icon_changed;
456 extern int icon_changed_set;
457
458 /* True if a menubar is in need of updating somewhere. */
459 extern int menubar_changed;
460 extern int menubar_changed_set;
461
462 /* true iff we should redraw the modelines on the next redisplay */
463 extern int modeline_changed;
464 extern int modeline_changed_set;
465
466 /* non-nil if point has changed in some buffer since the last time
467 redisplay completed */
468 extern int point_changed;
469 extern int point_changed_set;
470
471 /* non-nil if some frame has changed its size */
472 extern int size_changed;
473
474 /* non-nil if some device has signaled that it wants to change size */
475 extern int asynch_device_change_pending;
476
477 /* non-nil if any toolbar has changed */
478 extern int toolbar_changed;
479 extern int toolbar_changed_set;
480
481 /* non-nil if any gutter has changed */
482 extern int gutter_changed;
483 extern int gutter_changed_set;
484
485 /* non-nil if any window has changed since the last time redisplay completed */
486 extern int windows_changed;
487
488 /* non-nil if any frame's window structure has changed since the last
489 time redisplay completed */
490 extern int windows_structure_changed;
491
492 /* These macros can be relatively expensive. Since they are often
493 called numerous times between each call to redisplay, we keep track
494 if each has already been called and don't bother doing most of the
495 work if it is currently set. */
496
497 #define MARK_TYPE_CHANGED(object) do { \
498 if (!object##_changed_set) { \
499 Lisp_Object MTC_devcons, MTC_concons; \
500 DEVICE_LOOP_NO_BREAK (MTC_devcons, MTC_concons) \
501 { \
502 Lisp_Object MTC_frmcons; \
503 struct device *MTC_d = XDEVICE (XCAR (MTC_devcons)); \
504 DEVICE_FRAME_LOOP (MTC_frmcons, MTC_d) \
505 { \
506 struct frame *MTC_f = XFRAME (XCAR (MTC_frmcons)); \
507 MTC_f->object##_changed = 1; \
508 MTC_f->modiff++; \
509 } \
510 MTC_d->object##_changed = 1; \
511 } \
512 object##_changed = 1; \
513 object##_changed_set = 1; } \
514 } while (0)
515
516 #define MARK_BUFFERS_CHANGED MARK_TYPE_CHANGED (buffers)
517 #define MARK_CLIP_CHANGED MARK_TYPE_CHANGED (clip)
518 #define MARK_EXTENTS_CHANGED MARK_TYPE_CHANGED (extents)
519 #define MARK_ICON_CHANGED MARK_TYPE_CHANGED (icon)
520 #define MARK_MENUBAR_CHANGED MARK_TYPE_CHANGED (menubar)
521 #define MARK_MODELINE_CHANGED MARK_TYPE_CHANGED (modeline)
522 #define MARK_POINT_CHANGED MARK_TYPE_CHANGED (point)
523 #define MARK_TOOLBAR_CHANGED MARK_TYPE_CHANGED (toolbar)
524 #define MARK_GUTTER_CHANGED MARK_TYPE_CHANGED (gutter)
525 #define MARK_GLYPHS_CHANGED MARK_TYPE_CHANGED (glyphs)
526 #define MARK_SUBWINDOWS_CHANGED MARK_TYPE_CHANGED (subwindows)
527 #define MARK_SUBWINDOWS_STATE_CHANGED MARK_TYPE_CHANGED (subwindows_state)
528
529
530 #define CLASS_RESET_CHANGED_FLAGS(p) do { \
531 (p)->buffers_changed = 0; \
532 (p)->clip_changed = 0; \
533 (p)->extents_changed = 0; \
534 (p)->faces_changed = 0; \
535 (p)->frame_changed = 0; \
536 (p)->icon_changed = 0; \
537 (p)->menubar_changed = 0; \
538 (p)->modeline_changed = 0; \
539 (p)->point_changed = 0; \
540 (p)->toolbar_changed = 0; \
541 (p)->gutter_changed = 0; \
542 (p)->glyphs_changed = 0; \
543 (p)->subwindows_changed = 0; \
544 (p)->subwindows_state_changed = 0; \
545 (p)->windows_changed = 0; \
546 (p)->windows_structure_changed = 0; \
547 } while (0)
548
549 #define GLOBAL_RESET_CHANGED_FLAGS do { \
550 buffers_changed = 0; \
551 clip_changed = 0; \
552 extents_changed = 0; \
553 faces_changed = 0; \
554 frame_changed = 0; \
555 icon_changed = 0; \
556 menubar_changed = 0; \
557 modeline_changed = 0; \
558 point_changed = 0; \
559 toolbar_changed = 0; \
560 gutter_changed = 0; \
561 glyphs_changed = 0; \
562 subwindows_changed = 0; \
563 subwindows_state_changed = 0; \
564 windows_changed = 0; \
565 windows_structure_changed = 0; \
566 } while (0)
567
568 #define CLASS_REDISPLAY_FLAGS_CHANGEDP(p) \
569 ( (p)->buffers_changed || \
570 (p)->clip_changed || \
571 (p)->extents_changed || \
572 (p)->faces_changed || \
573 (p)->frame_changed || \
574 (p)->icon_changed || \
575 (p)->menubar_changed || \
576 (p)->modeline_changed || \
577 (p)->point_changed || \
578 (p)->toolbar_changed || \
579 (p)->gutter_changed || \
580 (p)->glyphs_changed || \
581 (p)->subwindows_changed || \
582 (p)->subwindows_state_changed || \
583 (p)->windows_changed || \
584 (p)->windows_structure_changed )
585
586 #define GLOBAL_REDISPLAY_FLAGS_CHANGEDP \
587 ( buffers_changed || \
588 clip_changed || \
589 extents_changed || \
590 faces_changed || \
591 frame_changed || \
592 icon_changed || \
593 menubar_changed || \
594 modeline_changed || \
595 point_changed || \
596 toolbar_changed || \
597 gutter_changed || \
598 glyphs_changed || \
599 subwindows_changed || \
600 subwindows_state_changed || \
601 windows_changed || \
602 windows_structure_changed )
603
604
605 /* Anytime a console, device or frame is added or deleted we need to reset
606 these flags. */
607 #define RESET_CHANGED_SET_FLAGS do { \
608 buffers_changed_set = 0; \
609 clip_changed_set = 0; \
610 extents_changed_set = 0; \
611 icon_changed_set = 0; \
612 menubar_changed_set = 0; \
613 modeline_changed_set = 0; \
614 point_changed_set = 0; \
615 toolbar_changed_set = 0; \
616 gutter_changed_set = 0; \
617 glyphs_changed_set = 0; \
618 subwindows_changed_set = 0; \
619 subwindows_state_changed_set = 0; \
620 } while (0)
621
622
623 /*************************************************************************/
624 /* redisplay global variables */
625 /*************************************************************************/
626
627 /* redisplay structure used by various utility routines. */
628 extern display_line_dynarr *cmotion_display_lines;
629
630 /* Nonzero means truncate lines in all windows less wide than the frame. */
631 extern int truncate_partial_width_windows;
632
633 /* Nonzero if we're in a display critical section. */
634 extern int in_display;
635
636 /* Nonzero means no need to redraw the entire frame on resuming
637 a suspended Emacs. This is useful on terminals with multiple pages,
638 where one page is used for Emacs and another for all else. */
639 extern int no_redraw_on_reenter;
640
641 /* Nonzero means flash the frame instead of ringing the bell. */
642 extern int visible_bell;
643
644 /* Thickness of shadow border around 3D modelines. */
645 extern Lisp_Object Vmodeline_shadow_thickness;
646
647 /* Scroll if point lands on the bottom line and that line is partially
648 clipped. */
649 extern int scroll_on_clipped_lines;
650
651 extern Lisp_Object Vglobal_mode_string;
652
653 /* The following two variables are defined in emacs.c and are used
654 to convey information discovered on the command line way early
655 (before *anything* is initialized). */
656
657 /* If non-zero, a window-system was specified on the command line.
658 Defined in emacs.c. */
659 extern int display_arg;
660
661 /* Type of display specified. Defined in emacs.c. */
662 extern CONST char *display_use;
663
664 /* Nonzero means reading single-character input with prompt
665 so put cursor on minibuffer after the prompt. */
666
667 extern int cursor_in_echo_area;
668
669 extern Lisp_Object Qbar_cursor, Qcursor_in_echo_area, Vwindow_system;
670
671
672 /*************************************************************************/
673 /* redisplay exported functions */
674 /*************************************************************************/
675 EXFUN (Fredraw_frame, 2);
676
677 int redisplay_text_width_string (struct window *w, int findex,
678 Bufbyte *nonreloc, Lisp_Object reloc,
679 Bytecount offset, Bytecount len);
680 int redisplay_frame_text_width_string (struct frame *f,
681 Lisp_Object face,
682 Bufbyte *nonreloc,
683 Lisp_Object reloc,
684 Bytecount offset, Bytecount len);
685 void redisplay (void);
686 struct display_block *get_display_block_from_line (struct display_line *dl,
687 enum display_type type);
688 layout_bounds calculate_display_line_boundaries (struct window *w,
689 int modeline);
690 Bufpos point_at_center (struct window *w, int type, Bufpos start,
691 Bufpos point);
692 int line_at_center (struct window *w, int type, Bufpos start, Bufpos point);
693 int window_half_pixpos (struct window *w);
694 void redisplay_echo_area (void);
695 void free_display_structs (struct window_mirror *mir);
696 void free_display_lines (display_line_dynarr *dla);
697 Bufbyte *generate_formatted_string (struct window *w, Lisp_Object format_str,
698 Lisp_Object result_str, face_index findex,
699 int type);
700 void generate_displayable_area (struct window *w, Lisp_Object disp_string,
701 int xpos, int ypos, int width, int height,
702 display_line_dynarr* dl,
703 Bufpos start_pos, face_index default_face);
704 int real_current_modeline_height (struct window *w);
705 int pixel_to_glyph_translation (struct frame *f, int x_coord,
706 int y_coord, int *col, int *row,
707 int *obj_x, int *obj_y,
708 struct window **w, Bufpos *bufpos,
709 Bufpos *closest, Charcount *modeline_closest,
710 Lisp_Object *obj1, Lisp_Object *obj2);
711 void glyph_to_pixel_translation (struct window *w, int char_x,
712 int char_y, int *pix_x, int *pix_y);
713 void mark_redisplay (void);
714 int point_in_line_start_cache (struct window *w, Bufpos point,
715 int min_past);
716 int point_would_be_visible (struct window *w, Bufpos startp,
717 Bufpos point);
718 Bufpos start_of_last_line (struct window *w, Bufpos startp);
719 Bufpos end_of_last_line (struct window *w, Bufpos startp);
720 Bufpos start_with_line_at_pixpos (struct window *w, Bufpos point,
721 int pixpos);
722 Bufpos start_with_point_on_display_line (struct window *w, Bufpos point,
723 int line);
724 int redisplay_variable_changed (Lisp_Object sym, Lisp_Object *val,
725 Lisp_Object in_object, int flags);
726 void redisplay_glyph_changed (Lisp_Object glyph, Lisp_Object property,
727 Lisp_Object locale);
728
729 #ifdef MEMORY_USAGE_STATS
730 int compute_display_line_dynarr_usage (display_line_dynarr *dyn,
731 struct overhead_stats *ovstats);
732 int compute_line_start_cache_dynarr_usage (line_start_cache_dynarr *dyn,
733 struct overhead_stats *ovstats);
734 #endif
735
736
737 /* defined in redisplay-output.c */
738 int get_next_display_block (layout_bounds bounds,
739 display_block_dynarr *dba, int start_pos,
740 int *next_start);
741 void redisplay_output_layout (struct window *w,
742 Lisp_Object image_instance,
743 struct display_box* db, struct display_glyph_area* dga,
744 face_index findex, int cursor_start, int cursor_width,
745 int cursor_height);
746 void redisplay_output_subwindow (struct window *w,
747 Lisp_Object image_instance,
748 struct display_box* db, struct display_glyph_area* dga,
749 face_index findex, int cursor_start, int cursor_width,
750 int cursor_height);
751 void redisplay_unmap_subwindows_maybe (struct frame* f, int x, int y, int width, int height);
752 void redisplay_output_pixmap (struct window *w,
753 Lisp_Object image_instance,
754 struct display_box* db, struct display_glyph_area* dga,
755 face_index findex, int cursor_start, int cursor_width,
756 int cursor_height, int offset_bitmap);
757 int redisplay_calculate_display_boxes (struct display_line *dl, int xpos,
758 int xoffset, int start_pixpos, int width,
759 struct display_box* dest,
760 struct display_glyph_area* src);
761 int redisplay_normalize_glyph_area (struct display_box* dest,
762 struct display_glyph_area* glyphsrc);
763 void redisplay_clear_to_window_end (struct window *w, int ypos1, int ypos2);
764 void redisplay_clear_region (Lisp_Object window, face_index findex, int x,
765 int y, int width, int height);
766 void redisplay_clear_bottom_of_window (struct window *w,
767 display_line_dynarr *ddla,
768 int min_start, int max_end);
769 void redisplay_update_line (struct window *w, int first_line,
770 int last_line, int update_values);
771 void redisplay_output_window (struct window *w);
772 void bevel_modeline (struct window *w, struct display_line *dl);
773 int redisplay_move_cursor (struct window *w, Bufpos new_point,
774 int no_output_end);
775 void redisplay_redraw_cursor (struct frame *f, int run_begin_end_meths);
776 void output_display_line (struct window *w, display_line_dynarr *cdla,
777 display_line_dynarr *ddla, int line,
778 int force_start, int force_end);
779
780 #endif /* _XEMACS_REDISPLAY_H_ */