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c22ca93b | 1 | /* Interface definitions for display code. |
5f5c8ee5 GM |
2 | Copyright (C) 1985, 1993, 1994, 1997, 1998, 1999 |
3 | Free Software Foundation, Inc. | |
c22ca93b JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
e5d77022 | 9 | the Free Software Foundation; either version 2, or (at your option) |
c22ca93b JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
c22ca93b | 21 | |
5f5c8ee5 | 22 | /* New redisplay written by Gerd Moellmann <gerd@acm.org>. */ |
87485d6f | 23 | |
5f5c8ee5 GM |
24 | #ifndef DISPEXTERN_H_INCLUDED |
25 | #define DISPEXTERN_H_INCLUDED | |
c22ca93b JB |
26 | |
27 | #ifdef HAVE_X_WINDOWS | |
9f2279ad | 28 | #include <X11/Xlib.h> |
87485d6f MW |
29 | #endif |
30 | ||
31 | #ifdef MSDOS | |
32 | #include "msdos.h" | |
33 | #endif | |
9f2279ad | 34 | |
497fbd42 | 35 | #ifdef HAVE_NTGUI |
c0ac470c | 36 | #include "w32gui.h" |
497fbd42 GV |
37 | #endif |
38 | ||
5f5c8ee5 GM |
39 | |
40 | /* Structure forward declarations. Some are here because function | |
41 | prototypes below reference structure types before their definition | |
42 | in this file. Some are here because not every file including | |
43 | dispextern.h also includes frame.h and windows.h. */ | |
44 | ||
45 | struct glyph; | |
46 | struct glyph_row; | |
47 | struct glyph_matrix; | |
48 | struct glyph_pool; | |
49 | struct frame; | |
50 | struct window; | |
51 | ||
52 | ||
53 | \f | |
5f5c8ee5 GM |
54 | /*********************************************************************** |
55 | Debugging | |
56 | ***********************************************************************/ | |
57 | ||
58 | /* If GLYPH_DEBUG is non-zero, additional checks are activated. Turn | |
59 | it off by defining the macro GLYPH_DEBUG to zero. */ | |
60 | ||
61 | #ifndef GLYPH_DEBUG | |
62 | #define GLYPH_DEBUG 0 | |
63 | #endif | |
64 | ||
65 | /* Macros to include code only if GLYPH_DEBUG != 0. */ | |
66 | ||
67 | #if GLYPH_DEBUG | |
68 | #define IF_DEBUG(X) X | |
69 | #define xassert(X) if (!(X)) abort (); else (void) 0 | |
70 | #else | |
71 | #define IF_DEBUG(X) (void) 0 | |
72 | #define xassert(X) (void) 0 | |
73 | #endif | |
74 | ||
75 | /* Macro for displaying traces of redisplay. If Emacs was compiled | |
76 | with GLYPH_DEBUG != 0, the variable trace_redisplay_p can be set to | |
77 | a non-zero value in debugging sessions to activate traces. */ | |
78 | ||
79 | #if GLYPH_DEBUG | |
80 | ||
81 | extern int trace_redisplay_p; | |
82 | #include <stdio.h> | |
83 | ||
84 | #define TRACE(X) \ | |
85 | if (trace_redisplay_p) \ | |
86 | fprintf X; \ | |
87 | else \ | |
88 | (void) 0 | |
89 | ||
90 | #else /* GLYPH_DEBUG == 0 */ | |
91 | ||
92 | #define TRACE(X) (void) 0 | |
93 | ||
94 | #endif /* GLYPH_DEBUG == 0 */ | |
95 | ||
96 | ||
97 | \f | |
98 | /*********************************************************************** | |
99 | Text positions | |
100 | ***********************************************************************/ | |
101 | ||
102 | /* Starting with Emacs 20.3, characters from strings and buffers have | |
103 | both a character and a byte position associated with them. The | |
104 | following structure holds such a pair of positions. */ | |
105 | ||
106 | struct text_pos | |
107 | { | |
108 | /* Character position. */ | |
109 | int charpos; | |
110 | ||
111 | /* Corresponding byte position. */ | |
112 | int bytepos; | |
113 | }; | |
114 | ||
115 | /* Access character and byte position of POS in a functional form. */ | |
116 | ||
117 | #define BYTEPOS(POS) (POS).bytepos | |
118 | #define CHARPOS(POS) (POS).charpos | |
119 | ||
120 | /* Set character position of POS to CHARPOS, byte position to BYTEPOS. */ | |
121 | ||
122 | #define SET_TEXT_POS(POS, CHARPOS, BYTEPOS) \ | |
123 | ((POS).charpos = (CHARPOS), (POS).bytepos = BYTEPOS) | |
124 | ||
125 | /* Increment text position POS. */ | |
126 | ||
127 | #define INC_TEXT_POS(POS) \ | |
128 | do \ | |
129 | { \ | |
130 | ++(POS).charpos; \ | |
131 | INC_POS ((POS).bytepos); \ | |
132 | } \ | |
133 | while (0) | |
134 | ||
135 | /* Decrement text position POS. */ | |
136 | ||
137 | #define DEC_TEXT_POS(POS) \ | |
138 | do \ | |
139 | { \ | |
140 | --(POS).charpos; \ | |
141 | DEC_POS ((POS).bytepos); \ | |
142 | } \ | |
143 | while (0) | |
144 | ||
145 | /* Set text position POS from marker MARKER. */ | |
146 | ||
147 | #define SET_TEXT_POS_FROM_MARKER(POS, MARKER) \ | |
148 | (CHARPOS (POS) = marker_position ((MARKER)), \ | |
149 | BYTEPOS (POS) = marker_byte_position ((MARKER))) | |
150 | ||
151 | /* Set marker MARKER from text position POS. */ | |
152 | ||
153 | #define SET_MARKER_FROM_TEXT_POS(MARKER, POS) \ | |
154 | set_marker_both ((MARKER), Qnil, CHARPOS ((POS)), BYTEPOS ((POS))) | |
155 | ||
156 | /* Value is non-zero if character and byte positions of POS1 and POS2 | |
157 | are equal. */ | |
158 | ||
159 | #define TEXT_POS_EQUAL_P(POS1, POS2) \ | |
160 | ((POS1).charpos == (POS2).charpos \ | |
161 | && (POS1).bytepos == (POS2).bytepos) | |
162 | ||
163 | /* When rendering glyphs, redisplay scans string or buffer text, | |
164 | overlay strings in that text, and does display table or control | |
165 | character translations. The following structure captures a | |
166 | position taking all this into account. */ | |
167 | ||
168 | struct display_pos | |
169 | { | |
170 | /* Buffer or string position. */ | |
171 | struct text_pos pos; | |
172 | ||
173 | /* If this is a position in an overlay string, overlay_string_index | |
174 | is the index of that overlay string in the sequence of overlay | |
175 | strings at `pos' in the order redisplay processes them. A value | |
176 | < 0 means that this is not a position in an overlay string. */ | |
177 | int overlay_string_index; | |
178 | ||
179 | /* If this is a position in an overlay string, string_pos is the | |
180 | position within that string. */ | |
181 | struct text_pos string_pos; | |
182 | ||
183 | /* If the character at the position above is a control character or | |
184 | has a display table entry, dpvec_index is an index in the display | |
185 | table or control character translation of that character. A | |
186 | value < 0 means this is not a position in such a translation. */ | |
187 | int dpvec_index; | |
188 | }; | |
189 | ||
190 | ||
191 | \f | |
192 | /*********************************************************************** | |
193 | Glyphs | |
194 | ***********************************************************************/ | |
195 | ||
196 | /* Enumeration of glyph types. Glyph structures contain a type field | |
197 | containing one of the enumerators defined here. */ | |
198 | ||
199 | enum glyph_type | |
200 | { | |
201 | /* Glyph describes a character. */ | |
202 | CHAR_GLYPH, | |
203 | ||
204 | /* Glyph describes an image. */ | |
205 | IMAGE_GLYPH, | |
206 | ||
207 | /* Glyph is a space of fractional width and/or height. */ | |
208 | STRETCH_GLYPH | |
209 | }; | |
210 | ||
211 | ||
212 | /* Glyphs. */ | |
213 | ||
214 | struct glyph | |
215 | { | |
216 | /* Position from which this glyph was drawn. If `object' below is a | |
217 | Lisp string, this is a position in that string. If it is a | |
218 | buffer, this is a position in that buffer. A value of -1 | |
219 | together with a null object means glyph is a truncation glyph at | |
220 | the start of a row. */ | |
221 | int charpos; | |
222 | ||
223 | /* Lisp object source of this glyph. Currently either a buffer or | |
224 | a string, or 0. */ | |
225 | Lisp_Object object; | |
226 | ||
227 | /* Width in pixels. */ | |
228 | short pixel_width; | |
229 | ||
230 | /* Vertical offset. If < 0, the glyph is displayed raised, if > 0 | |
231 | the glyph is displayed lowered. */ | |
232 | short voffset; | |
233 | ||
234 | /* Which kind of glyph this is---character, image etc. Value | |
235 | should be an enumerator of type enum glyph_type. */ | |
236 | unsigned type : 2; | |
237 | ||
238 | /* 1 means this glyph was produced from multibyte text. Zero | |
239 | means it was produced from unibyte text, i.e. charsets aren't | |
240 | applicable, and encoding is not performed. */ | |
241 | unsigned multibyte_p : 1; | |
242 | ||
243 | /* Non-zero means draw a box line at the left or right side of this | |
244 | glyph. This is part of the implementation of the face attribute | |
245 | `:box'. */ | |
246 | unsigned left_box_line_p : 1; | |
247 | unsigned right_box_line_p : 1; | |
248 | ||
2febf6e0 GM |
249 | /* Non-zero means this glyph's physical ascent or descent is greater |
250 | than its logical ascent/descent, i.e. it may potentially overlap | |
251 | glyphs above or below it. */ | |
252 | unsigned overlaps_vertically_p : 1; | |
253 | ||
5f5c8ee5 GM |
254 | /* A union of sub-structures for different glyph types. */ |
255 | union | |
256 | { | |
257 | /* Sub-structure for character glyphs (type == CHAR_GLYPH). */ | |
258 | struct | |
259 | { | |
260 | /* Character code. */ | |
261 | unsigned code : 19; | |
262 | ||
263 | /* Character's face. */ | |
264 | unsigned face_id : 11; | |
265 | ||
266 | /* 1 means glyph is a padding glyph. Padding glyphs are used | |
267 | for characters whose visual shape consists of more than one | |
268 | glyph (e.g. Asian characters). All but the first glyph of | |
269 | such a glyph sequence have the padding_p flag set. Only used | |
270 | for terminal frames, and there only to minimize code changes. | |
271 | A better way would probably be to use the width field of | |
272 | glyphs to express padding. */ | |
273 | unsigned padding_p : 1; | |
274 | } | |
275 | ch; | |
276 | ||
277 | /* Sub-structure for image glyphs (type == IMAGE_GLYPH). */ | |
278 | struct | |
279 | { | |
280 | /* Image id. */ | |
281 | unsigned id : 20; | |
282 | ||
283 | /* Face under the image. */ | |
284 | unsigned face_id : 12; | |
285 | } | |
286 | img; | |
287 | ||
288 | /* Sub-structure for type == STRETCH_GLYPH. */ | |
289 | struct | |
290 | { | |
291 | /* The height of the glyph. */ | |
292 | unsigned height : 11; | |
293 | ||
294 | /* The ascent of the glyph. */ | |
295 | unsigned ascent : 10; | |
296 | ||
297 | /* The face of the stretch glyph. */ | |
298 | unsigned face_id : 11; | |
299 | } | |
300 | stretch; | |
301 | ||
302 | /* Used to compare all bit-fields above in one step. */ | |
303 | unsigned val; | |
304 | } u; | |
305 | }; | |
306 | ||
307 | ||
308 | /* Is GLYPH a space? */ | |
309 | ||
310 | #define CHAR_GLYPH_SPACE_P(GLYPH) \ | |
311 | (GLYPH_FROM_CHAR_GLYPH ((GLYPH)) == SPACEGLYPH) | |
312 | ||
313 | /* Are glyphs *X and *Y equal? */ | |
314 | ||
315 | #define GLYPH_EQUAL_P(X, Y) \ | |
316 | ((X)->type == (Y)->type \ | |
317 | && (X)->u.val == (Y)->u.val \ | |
318 | && (X)->left_box_line_p == (Y)->left_box_line_p \ | |
319 | && (X)->right_box_line_p == (Y)->right_box_line_p \ | |
320 | && (X)->voffset == (Y)->voffset) | |
321 | ||
322 | /* Fill a character glyph GLYPH. CODE, FACE_ID, PADDING_P correspond | |
323 | to the bits defined for the typedef `GLYPH' in lisp.h. */ | |
324 | ||
325 | #define SET_CHAR_GLYPH(GLYPH, CODE, FACE_ID, PADDING_P) \ | |
326 | do \ | |
327 | { \ | |
328 | (GLYPH).u.ch.code = (CODE); \ | |
329 | (GLYPH).u.ch.face_id = (FACE_ID); \ | |
330 | (GLYPH).u.ch.padding_p = (PADDING_P); \ | |
331 | } \ | |
332 | while (0) | |
333 | ||
334 | /* Fill a character type glyph GLYPH from a glyph typedef FROM as | |
335 | defined in lisp.h. */ | |
336 | ||
337 | #define SET_CHAR_GLYPH_FROM_GLYPH(GLYPH, FROM) \ | |
338 | SET_CHAR_GLYPH ((GLYPH), \ | |
339 | FAST_GLYPH_CHAR ((FROM)), \ | |
340 | FAST_GLYPH_FACE ((FROM)), \ | |
341 | ((FROM) & GLYPH_MASK_PADDING) != 0) | |
342 | ||
343 | /* Construct a typedef'd GLYPH value from a character glyph GLYPH. */ | |
344 | ||
345 | #define GLYPH_FROM_CHAR_GLYPH(GLYPH) \ | |
346 | ((GLYPH).u.ch.code \ | |
347 | | ((GLYPH).u.ch.face_id << CHARACTERBITS) \ | |
348 | | ((GLYPH).u.ch.padding_p ? GLYPH_MASK_PADDING : 0)) | |
349 | ||
350 | /* Is GLYPH a padding glyph? */ | |
351 | ||
352 | #define CHAR_GLYPH_PADDING_P(GLYPH) (GLYPH).u.ch.padding_p | |
353 | ||
354 | ||
355 | ||
356 | \f | |
357 | /*********************************************************************** | |
358 | Glyph Pools | |
359 | ***********************************************************************/ | |
360 | ||
361 | /* Glyph Pool. | |
362 | ||
363 | Glyph memory for frame-based redisplay is allocated from the heap | |
364 | in one vector kept in a glyph pool structure which is stored with | |
365 | the frame. The size of the vector is made large enough to cover | |
366 | all windows on the frame. | |
367 | ||
368 | Both frame and window glyph matrices reference memory from a glyph | |
369 | pool in frame-based redisplay. | |
370 | ||
371 | In window-based redisplay, no glyphs pools exist; windows allocate | |
372 | and free their glyph memory themselves. */ | |
373 | ||
374 | struct glyph_pool | |
375 | { | |
376 | /* Vector of glyphs allocated from the heap. */ | |
377 | struct glyph *glyphs; | |
378 | ||
379 | /* Allocated size of `glyphs'. */ | |
380 | int nglyphs; | |
381 | ||
382 | /* Number of rows and columns in a matrix. */ | |
383 | int nrows, ncolumns; | |
384 | }; | |
385 | ||
386 | ||
387 | \f | |
388 | /*********************************************************************** | |
389 | Glyph Matrix | |
390 | ***********************************************************************/ | |
391 | ||
392 | /* Glyph Matrix. | |
393 | ||
394 | Three kinds of glyph matrices exist: | |
395 | ||
396 | 1. Frame glyph matrices. These are used for terminal frames whose | |
397 | redisplay needs a view of the whole screen due to limited terminal | |
398 | capabilities. Frame matrices are used only in the update phase | |
399 | of redisplay. They are built in update_frame and not used after | |
400 | the update has been performed. | |
401 | ||
402 | 2. Window glyph matrices on frames having frame glyph matrices. | |
403 | Such matrices are sub-matrices of their corresponding frame matrix, | |
404 | i.e. frame glyph matrices and window glyph matrices share the same | |
405 | glyph memory which is allocated in form of a glyph_pool structure. | |
406 | Glyph rows in such a window matrix are slices of frame matrix rows. | |
407 | ||
408 | 2. Free-standing window glyph matrices managing their own glyph | |
409 | storage. This form is used in window-based redisplay which | |
410 | includes variable width and height fonts etc. | |
411 | ||
412 | The size of a window's row vector depends on the height of fonts | |
413 | defined on its frame. It is chosen so that the vector is large | |
414 | enough to describe all lines in a window when it is displayed in | |
415 | the smallest possible character size. When new fonts are loaded, | |
416 | or window sizes change, the row vector is adjusted accordingly. */ | |
417 | ||
418 | struct glyph_matrix | |
419 | { | |
420 | /* The pool from which glyph memory is allocated, if any. This is | |
421 | null for frame matrices and for window matrices managing their | |
422 | own storage. */ | |
423 | struct glyph_pool *pool; | |
424 | ||
425 | /* Vector of glyph row structures. The row at nrows - 1 is reserved | |
426 | for the mode line. */ | |
427 | struct glyph_row *rows; | |
428 | ||
429 | /* Number of elements allocated for the vector rows above. */ | |
430 | int rows_allocated; | |
431 | ||
432 | /* The number of rows used by the window if all lines were displayed | |
433 | with the smallest possible character height. */ | |
434 | int nrows; | |
435 | ||
436 | /* Origin within the frame matrix if this is a window matrix on a | |
437 | frame having a frame matrix. Both values are zero for | |
438 | window-based redisplay. */ | |
439 | int matrix_x, matrix_y; | |
440 | ||
441 | /* Width and height of the matrix in columns and rows. */ | |
442 | int matrix_w, matrix_h; | |
443 | ||
444 | /* If this structure describes a window matrix, window_top_y is the | |
445 | top-most y-position and window_height is the height of the | |
446 | window, and window_vscroll is the vscroll at the time the matrix | |
447 | was last adjusted. Only set for window-based redisplay. */ | |
448 | int window_top_y, window_height, window_width, window_vscroll; | |
449 | ||
450 | /* Number of glyphs reserved for left and right marginal areas when | |
451 | the matrix was last adjusted. */ | |
452 | int left_margin_glyphs, right_margin_glyphs; | |
453 | ||
454 | /* Flag indicating that scrolling should not be tried in | |
455 | update_window. This flag is set by functions like try_window_id | |
456 | which do their own scrolling. */ | |
457 | unsigned no_scrolling_p : 1; | |
458 | ||
459 | /* Non-zero means window displayed in this matrix has a top mode | |
460 | line. */ | |
461 | unsigned top_line_p : 1; | |
462 | ||
463 | #ifdef GLYPH_DEBUG | |
464 | /* A string identifying the method used to display the matrix. */ | |
465 | char method[512]; | |
466 | #endif | |
2201e367 GM |
467 | |
468 | /* The buffer this matrix displays. Set in redisplay_internal. */ | |
469 | struct buffer *buffer; | |
470 | ||
471 | /* Values of BEGV and ZV as of last redisplay. */ | |
472 | int begv, zv; | |
5f5c8ee5 GM |
473 | }; |
474 | ||
475 | ||
476 | /* Check that glyph pointers stored in glyph rows of MATRIX are okay. | |
477 | This aborts if any pointer is found twice. */ | |
478 | ||
479 | #if GLYPH_DEBUG | |
480 | void check_matrix_pointer_lossage P_ ((struct glyph_matrix *)); | |
481 | #define CHECK_MATRIX(MATRIX) check_matrix_pointer_lossage ((MATRIX)) | |
482 | #else | |
483 | #define CHECK_MATRIX(MATRIX) (void) 0 | |
484 | #endif | |
485 | ||
486 | ||
487 | \f | |
488 | /*********************************************************************** | |
489 | Glyph Rows | |
490 | ***********************************************************************/ | |
491 | ||
492 | /* Area in window glyph matrix. If values are added or removed, the | |
493 | function mark_object in alloc.c has to be changed. */ | |
494 | ||
495 | enum glyph_row_area | |
496 | { | |
497 | LEFT_MARGIN_AREA, | |
498 | TEXT_AREA, | |
499 | RIGHT_MARGIN_AREA, | |
500 | LAST_AREA | |
501 | }; | |
502 | ||
503 | ||
504 | /* Rows of glyphs in a windows or frame glyph matrix. | |
505 | ||
506 | Each row is partitioned into three areas. The start and end of | |
507 | each area is recorded in a pointer as shown below. | |
508 | ||
509 | +--------------------+-------------+---------------------+ | |
510 | | left margin area | text area | right margin area | | |
511 | +--------------------+-------------+---------------------+ | |
512 | | | | | | |
513 | glyphs[LEFT_MARGIN_AREA] glyphs[RIGHT_MARGIN_AREA] | |
514 | | | | |
515 | glyphs[TEXT_AREA] | | |
516 | glyphs[LAST_AREA] | |
517 | ||
518 | Rows in frame matrices reference glyph memory allocated in a frame | |
519 | glyph pool (see the description of struct glyph_pool). Rows in | |
520 | window matrices on frames having frame matrices reference slices of | |
521 | the glyphs of corresponding rows in the frame matrix. | |
522 | ||
523 | Rows in window matrices on frames having no frame matrices point to | |
524 | glyphs allocated from the heap via xmalloc; | |
525 | glyphs[LEFT_MARGIN_AREA] is the start address of the allocated | |
526 | glyph structure array. */ | |
527 | ||
528 | struct glyph_row | |
529 | { | |
530 | /* Pointers to beginnings of areas. The end of an area A is found at | |
531 | A + 1 in the vector. The last element of the vector is the end | |
532 | of the whole row. | |
533 | ||
534 | Kludge alert: Even if used[TEXT_AREA] == 0, glyphs[TEXT_AREA][0]'s | |
535 | position field is used. It is -1 if this row does not correspond | |
536 | to any text; it is some buffer position if the row corresponds to | |
537 | an empty display line that displays a line end. This is what old | |
538 | redisplay used to do. (Except in code for terminal frames, this | |
539 | kludge is no longer use, I believe. --gerd). | |
540 | ||
541 | See also start, end, displays_text_p and ends_at_zv_p for cleaner | |
542 | ways to do it. The special meaning of positions 0 and -1 will be | |
543 | removed some day, so don't use it in new code. */ | |
544 | struct glyph *glyphs[1 + LAST_AREA]; | |
545 | ||
546 | /* Number of glyphs actually filled in areas. */ | |
547 | short used[LAST_AREA]; | |
548 | ||
549 | /* Window-relative x and y-position of the top-left corner of this | |
550 | row. If y < 0, this means that abs (y) pixels of the row are | |
551 | invisible because it is partially visible at the top of a window. | |
552 | If x < 0, this means that abs (x) pixels of the first glyph of | |
553 | the text area of the row are invisible because the glyph is | |
554 | partially visible. */ | |
555 | int x, y; | |
556 | ||
557 | /* Width of the row in pixels without taking face extension at the | |
558 | end of the row into account. */ | |
559 | int pixel_width; | |
560 | ||
2febf6e0 GM |
561 | /* Logical ascent/height of this line. The value of ascent is zero |
562 | and height is 1 on terminal frames. */ | |
5f5c8ee5 GM |
563 | int ascent, height; |
564 | ||
2febf6e0 GM |
565 | /* Physical ascent/height of this line. If max_ascent > ascent, |
566 | this line overlaps the line above it on the display. Otherwise, | |
567 | if max_height > height, this line overlaps the line beneath it. */ | |
568 | int phys_ascent, phys_height; | |
569 | ||
5f5c8ee5 GM |
570 | /* Portion of row that is visible. Partially visible rows may be |
571 | found at the top and bottom of a window. This is 1 for tty | |
572 | frames. It may be < 0 in case of completely invisible rows. */ | |
573 | int visible_height; | |
574 | ||
575 | /* Hash code. This hash code is available as soon as the row | |
576 | is constructed, i.e. after a call to display_line. */ | |
577 | unsigned hash; | |
578 | ||
579 | /* First position in this row. This is the text position, including | |
580 | overlay position information etc, where the display of this row | |
581 | started, and can thus be less the position of the first glyph | |
582 | (e.g. due to invisible text or horizontal scrolling). */ | |
583 | struct display_pos start; | |
584 | ||
585 | /* Text position at the end of this row. This is the position after | |
586 | the last glyph on this row. It can be greater than the last | |
587 | glyph position + 1, due to truncation, invisible text etc. In an | |
588 | up-to-date display, this should always be equal to the start | |
589 | position of the next row. */ | |
590 | struct display_pos end; | |
591 | ||
592 | /* In a desired matrix, 1 means that this row must be updated. In a | |
593 | current matrix, 0 means that the row has been invalidated, i.e. | |
594 | the row's contents do not agree with what is visible on the | |
595 | screen. */ | |
596 | unsigned enabled_p : 1; | |
597 | ||
598 | /* Display this line in inverse video? Used for the mode line and | |
599 | menu bar lines. */ | |
600 | unsigned inverse_p : 1; | |
601 | ||
602 | /* 1 means row displays a text line that is truncated on the left or | |
603 | right side. */ | |
604 | unsigned truncated_on_left_p : 1; | |
605 | unsigned truncated_on_right_p : 1; | |
606 | ||
607 | /* 1 means the overlay arrow is on this line. */ | |
608 | unsigned overlay_arrow_p : 1; | |
609 | ||
610 | /* 1 means that this row displays a continued line, i.e. it has a | |
611 | continuation mark at the right side. */ | |
612 | unsigned continued_p : 1; | |
613 | ||
614 | /* 0 means that this row does not contain any text, i.e. it is | |
615 | a blank line at the window and buffer end. */ | |
616 | unsigned displays_text_p : 1; | |
617 | ||
618 | /* 1 means that this line ends at ZV. */ | |
619 | unsigned ends_at_zv_p : 1; | |
620 | ||
621 | /* 1 means the face of the last glyph in the text area is drawn to | |
622 | the right end of the window. This flag is used in | |
623 | update_text_area to optimize clearing to the end of the area. */ | |
624 | unsigned fill_line_p : 1; | |
625 | ||
626 | /* Non-zero means display a bitmap on X frames indicating that this | |
627 | line contains no text and ends in ZV. */ | |
628 | unsigned indicate_empty_line_p : 1; | |
629 | ||
630 | /* 1 means this row contains glyphs that overlap each other because | |
631 | of lbearing or rbearing. */ | |
632 | unsigned contains_overlapping_glyphs_p : 1; | |
633 | ||
634 | /* 1 means this row is a wide as the window it is displayed in, including | |
635 | scroll bars, bitmap areas, and internal borders. This also | |
636 | implies that the row doesn't have marginal areas. */ | |
637 | unsigned full_width_p : 1; | |
638 | ||
5f5c8ee5 GM |
639 | /* Non-zero means row is a mode or top-line. */ |
640 | unsigned mode_line_p : 1; | |
641 | ||
2febf6e0 GM |
642 | /* 1 in a current row means this row is overlapped by another row. */ |
643 | unsigned overlapped_p : 1; | |
644 | ||
645 | /* 1 in a current row means this row overlaps others. */ | |
646 | unsigned overlapping_p : 1; | |
647 | ||
5f5c8ee5 GM |
648 | /* Continuation lines width at the start of the row. */ |
649 | int continuation_lines_width; | |
650 | }; | |
651 | ||
652 | ||
653 | /* Get a pointer to row number ROW in matrix MATRIX. If GLYPH_DEBUG | |
654 | is defined to a non-zero value, the function matrix_row checks that | |
655 | we don't try to access rows that are out of bounds. */ | |
656 | ||
657 | #if GLYPH_DEBUG | |
658 | struct glyph_row *matrix_row P_ ((struct glyph_matrix *, int)); | |
659 | #define MATRIX_ROW(MATRIX, ROW) matrix_row ((MATRIX), (ROW)) | |
660 | #else | |
661 | #define MATRIX_ROW(MATRIX, ROW) ((MATRIX)->rows + (ROW)) | |
662 | #endif | |
663 | ||
664 | /* Return a pointer to the row reserved for the mode line in MATRIX. | |
665 | Row MATRIX->nrows - 1 is always reserved for the mode line. */ | |
666 | ||
667 | #define MATRIX_MODE_LINE_ROW(MATRIX) \ | |
668 | ((MATRIX)->rows + (MATRIX)->nrows - 1) | |
669 | ||
670 | /* Return a pointer to the row reserved for the top line in MATRIX. | |
671 | This is always the first row in MATRIX because that's the only | |
672 | way that works in frame-based redisplay. */ | |
673 | ||
674 | #define MATRIX_TOP_LINE_ROW(MATRIX) (MATRIX)->rows | |
675 | ||
676 | /* Return a pointer to first row in MATRIX used for text display. */ | |
677 | ||
678 | #define MATRIX_FIRST_TEXT_ROW(MATRIX) \ | |
679 | ((MATRIX)->rows->mode_line_p ? (MATRIX)->rows + 1 : (MATRIX)->rows) | |
680 | ||
681 | /* Return a pointer to the first glyph in the text area of a row. | |
682 | MATRIX is the glyph matrix accessed, and ROW is the row index in | |
683 | MATRIX. */ | |
684 | ||
685 | #define MATRIX_ROW_GLYPH_START(MATRIX, ROW) \ | |
686 | (MATRIX_ROW ((MATRIX), (ROW))->glyphs[TEXT_AREA]) | |
687 | ||
688 | /* Return the number of used glyphs in the text area of a row. */ | |
689 | ||
690 | #define MATRIX_ROW_USED(MATRIX, ROW) \ | |
691 | (MATRIX_ROW ((MATRIX), (ROW))->used[TEXT_AREA]) | |
692 | ||
693 | /* Return the character/ byte position at which the display of ROW | |
694 | starts. */ | |
695 | ||
696 | #define MATRIX_ROW_START_CHARPOS(ROW) ((ROW)->start.pos.charpos) | |
697 | #define MATRIX_ROW_START_BYTEPOS(ROW) ((ROW)->start.pos.bytepos) | |
698 | ||
699 | /* Return character/ byte position at which ROW ends. */ | |
700 | ||
701 | #define MATRIX_ROW_END_CHARPOS(ROW) ((ROW)->end.pos.charpos) | |
702 | #define MATRIX_ROW_END_BYTEPOS(ROW) ((ROW)->end.pos.bytepos) | |
703 | ||
704 | /* Return the vertical position of ROW in MATRIX. */ | |
705 | ||
706 | #define MATRIX_ROW_VPOS(ROW, MATRIX) ((ROW) - (MATRIX)->rows) | |
707 | ||
708 | /* Return the last glyph row + 1 in MATRIX on window W reserved for | |
709 | text. If W has a mode line, the last row in the matrix is reserved | |
710 | for it. */ | |
711 | ||
712 | #define MATRIX_BOTTOM_TEXT_ROW(MATRIX, W) \ | |
713 | ((MATRIX)->rows \ | |
714 | + (MATRIX)->nrows \ | |
715 | - (WINDOW_WANTS_MODELINE_P ((W)) ? 1 : 0)) | |
716 | ||
717 | /* Non-zero if the face of the last glyph in ROW's text area has | |
718 | to be drawn to the end of the text area. */ | |
719 | ||
720 | #define MATRIX_ROW_EXTENDS_FACE_P(ROW) ((ROW)->fill_line_p) | |
721 | ||
722 | /* Set and query the enabled_p flag of glyph row ROW in MATRIX. */ | |
723 | ||
724 | #define SET_MATRIX_ROW_ENABLED_P(MATRIX, ROW, VALUE) \ | |
725 | (MATRIX_ROW ((MATRIX), (ROW))->enabled_p = (VALUE) != 0) | |
726 | ||
727 | #define MATRIX_ROW_ENABLED_P(MATRIX, ROW) \ | |
728 | (MATRIX_ROW ((MATRIX), (ROW))->enabled_p) | |
729 | ||
730 | /* Non-zero if ROW displays text. Value is non-zero if the row is | |
731 | blank but displays a line end. */ | |
732 | ||
733 | #define MATRIX_ROW_DISPLAYS_TEXT_P(ROW) ((ROW)->displays_text_p) | |
734 | ||
735 | /* Non-zero if ROW is not completely visible in window W. */ | |
736 | ||
737 | #define MATRIX_ROW_PARTIALLY_VISIBLE_P(ROW) \ | |
738 | ((ROW)->height != (ROW)->visible_height) | |
739 | ||
740 | /* Non-zero if ROW is partially visible at the top of window W. */ | |
741 | ||
742 | #define MATRIX_ROW_PARTIALLY_VISIBLE_AT_TOP_P(W, ROW) \ | |
743 | (MATRIX_ROW_PARTIALLY_VISIBLE_P ((ROW)) \ | |
744 | && (ROW)->y < WINDOW_DISPLAY_TOP_LINE_HEIGHT ((W))) | |
745 | ||
746 | /* Non-zero if ROW is partially visible at the bottom of window W. */ | |
747 | ||
748 | #define MATRIX_ROW_PARTIALLY_VISIBLE_AT_BOTTOM_P(W, ROW) \ | |
749 | (MATRIX_ROW_PARTIALLY_VISIBLE_P ((ROW)) \ | |
750 | && (ROW)->y + (ROW)->height > WINDOW_DISPLAY_HEIGHT_NO_MODE_LINE ((W))) | |
751 | ||
752 | /* Return the bottom Y + 1 of ROW. */ | |
753 | ||
754 | #define MATRIX_ROW_BOTTOM_Y(ROW) ((ROW)->y + (ROW)->height) | |
755 | ||
756 | /* Is ROW the last visible one in the display described by the | |
757 | iterator structure pointed to by IT?. */ | |
758 | ||
759 | #define MATRIX_ROW_LAST_VISIBLE_P(ROW, IT) \ | |
760 | (MATRIX_ROW_BOTTOM_Y ((ROW)) >= (IT)->last_visible_y) | |
761 | ||
762 | /* Non-zero if ROW displays a continuation line. */ | |
763 | ||
764 | #define MATRIX_ROW_CONTINUATION_LINE_P(ROW) \ | |
765 | ((ROW)->continuation_lines_width > 0) | |
766 | ||
767 | /* Non-zero if ROW ends in the middle of a character. This is the | |
768 | case for continued lines showing only part of a display table entry | |
769 | or a control char, or an overlay string. */ | |
770 | ||
771 | #define MATRIX_ROW_ENDS_IN_MIDDLE_OF_CHAR_P(ROW) \ | |
772 | ((ROW)->end.dpvec_index >= 0 \ | |
773 | || (ROW)->end.overlay_string_index >= 0) | |
774 | ||
775 | /* Non-zero if ROW ends in the middle of an overlay string. */ | |
776 | ||
777 | #define MATRIX_ROW_ENDS_IN_OVERLAY_STRING_P(ROW) \ | |
778 | ((ROW)->end.overlay_string_index >= 0) | |
779 | ||
780 | /* Non-zero if ROW starts in the middle of a character. See above. */ | |
781 | ||
782 | #define MATRIX_ROW_STARTS_IN_MIDDLE_OF_CHAR_P(ROW) \ | |
783 | ((ROW)->start.dpvec_index >= 0 \ | |
784 | || ((ROW)->start.overlay_string_index >= 0 \ | |
785 | && (ROW)->start.string_pos.charpos > 0)) | |
786 | ||
2febf6e0 GM |
787 | /* Non-zero means ROW overlaps its predecessor. */ |
788 | ||
789 | #define MATRIX_ROW_OVERLAPS_PRED_P(ROW) \ | |
790 | ((ROW)->phys_ascent > (ROW)->ascent) | |
791 | ||
792 | /* Non-zero means ROW overlaps its successor. */ | |
793 | ||
794 | #define MATRIX_ROW_OVERLAPS_SUCC_P(ROW) \ | |
795 | ((ROW)->phys_height - (ROW)->phys_ascent \ | |
796 | > (ROW)->height - (ROW)->ascent) | |
797 | ||
5f5c8ee5 GM |
798 | /* Non-zero means that fonts have been loaded since the last glyph |
799 | matrix adjustments. The function redisplay_internal adjusts glyph | |
800 | matrices when this flag is non-zero. */ | |
801 | ||
802 | extern int fonts_changed_p; | |
803 | ||
804 | /* A glyph for a space. */ | |
805 | ||
806 | extern struct glyph space_glyph; | |
807 | ||
808 | /* Window being updated by update_window. This is non-null as long as | |
809 | update_window has not finished, and null otherwise. It's role is | |
810 | analogous to updating_frame. */ | |
811 | ||
812 | extern struct window *updated_window; | |
813 | ||
814 | /* Glyph row and area updated by update_window_line. */ | |
815 | ||
816 | extern struct glyph_row *updated_row; | |
817 | extern int updated_area; | |
818 | ||
819 | /* Non-zero means reading single-character input with prompt so put | |
820 | cursor on mini-buffer after the prompt. Positive means at end of | |
821 | text in echo area; negative means at beginning of line. */ | |
822 | ||
823 | extern int cursor_in_echo_area; | |
824 | ||
825 | /* Non-zero means last display completed. Zero means it was | |
826 | preempted. */ | |
827 | ||
828 | extern int display_completed; | |
829 | ||
830 | /* Non-zero means redisplay has been performed directly (see also | |
831 | direct_output_for_insert and direct_output_forward_char), so that | |
832 | no further updating has to be performed. The function | |
833 | redisplay_internal checks this flag, and does nothing but reset it | |
834 | to zero if it is non-zero. */ | |
835 | ||
836 | extern int redisplay_performed_directly_p; | |
837 | ||
838 | /* A temporary storage area, including a row of glyphs. Initialized | |
839 | in xdisp.c. Used for various purposes, as an example see | |
840 | direct_output_for_insert. */ | |
841 | ||
842 | extern struct glyph_row scratch_glyph_row; | |
843 | ||
844 | ||
845 | \f | |
846 | /************************************************************************ | |
847 | Display Dimensions | |
848 | ************************************************************************/ | |
849 | ||
850 | /* Return the height of the mode line in glyph matrix MATRIX, or zero | |
851 | if not known. This macro is called under circumstances where | |
852 | MATRIX might not have been allocated yet. */ | |
853 | ||
854 | #define MATRIX_MODE_LINE_HEIGHT(MATRIX) \ | |
855 | ((MATRIX) && (MATRIX)->rows \ | |
856 | ? MATRIX_MODE_LINE_ROW (MATRIX)->height \ | |
857 | : 0) | |
858 | ||
859 | /* Return the height of the top line in glyph matrix MATRIX, or zero | |
860 | if not known. This macro is called under circumstances where | |
861 | MATRIX might not have been allocated yet. */ | |
862 | ||
863 | #define MATRIX_TOP_LINE_HEIGHT(MATRIX) \ | |
864 | ((MATRIX) && (MATRIX)->rows \ | |
865 | ? MATRIX_TOP_LINE_ROW (MATRIX)->height \ | |
866 | : 0) | |
867 | ||
868 | /* Return the current height of the mode line of window W. If not | |
869 | known from W's current glyph matrix, return a default based on the | |
870 | height of the font of the face `modeline'. */ | |
871 | ||
872 | #define CURRENT_MODE_LINE_HEIGHT(W) \ | |
873 | (MATRIX_MODE_LINE_HEIGHT ((W)->current_matrix) \ | |
874 | ? MATRIX_MODE_LINE_HEIGHT ((W)->current_matrix) \ | |
875 | : estimate_mode_line_height (XFRAME ((W)->frame), MODE_LINE_FACE_ID)) | |
876 | ||
877 | /* Return the current height of the top line of window W. If not | |
878 | known from W's current glyph matrix, return an estimation based on | |
879 | the height of the font of the face `top-line'. */ | |
880 | ||
881 | #define CURRENT_TOP_LINE_HEIGHT(W) \ | |
882 | (MATRIX_TOP_LINE_HEIGHT ((W)->current_matrix) \ | |
883 | ? MATRIX_TOP_LINE_HEIGHT ((W)->current_matrix) \ | |
884 | : estimate_mode_line_height (XFRAME ((W)->frame), TOP_LINE_FACE_ID)) | |
885 | ||
886 | /* Return the height of the desired mode line of window W. */ | |
887 | ||
888 | #define DESIRED_MODE_LINE_HEIGHT(W) \ | |
889 | MATRIX_MODE_LINE_HEIGHT ((W)->desired_matrix) | |
890 | ||
891 | /* Return the height of the desired top line of window W. */ | |
892 | ||
893 | #define DESIRED_TOP_LINE_HEIGHT(W) \ | |
894 | MATRIX_TOP_LINE_HEIGHT ((W)->desired_matrix) | |
895 | ||
896 | /* Like FRAME_INTERNAL_BORDER_WIDTH but checks whether frame F is a | |
897 | window-system frame. */ | |
898 | ||
899 | #define FRAME_INTERNAL_BORDER_WIDTH_SAFE(F) \ | |
900 | (FRAME_WINDOW_P (F) ? FRAME_INTERNAL_BORDER_WIDTH (F) : 0) | |
901 | ||
902 | /* Width of display region of window W. For terminal frames, this | |
903 | equals the width of W since there are no vertical scroll bars. For | |
904 | window system frames, the value has to be corrected by the pixel | |
905 | width of vertical scroll bars, and bitmap areas. */ | |
906 | ||
907 | #define WINDOW_DISPLAY_PIXEL_WIDTH(W) \ | |
908 | (((XFASTINT ((W)->width) \ | |
909 | - FRAME_SCROLL_BAR_WIDTH (XFRAME (WINDOW_FRAME ((W)))) \ | |
910 | - 2 * FRAME_FLAGS_AREA_COLS (XFRAME (WINDOW_FRAME ((W))))) \ | |
911 | * CANON_X_UNIT (XFRAME (WINDOW_FRAME ((W)))))) | |
912 | ||
913 | /* Height of the display region of W, including a mode line, if any. */ | |
914 | ||
915 | #define WINDOW_DISPLAY_PIXEL_HEIGHT(W) \ | |
916 | (XFASTINT ((W)->height) \ | |
917 | * CANON_Y_UNIT (XFRAME (WINDOW_FRAME ((W))))) | |
918 | ||
919 | /* Height in pixels of the mode line. May be zero if W doesn't have a | |
920 | mode line. */ | |
921 | ||
922 | #define WINDOW_DISPLAY_MODE_LINE_HEIGHT(W) \ | |
923 | (WINDOW_WANTS_MODELINE_P ((W)) \ | |
924 | ? CURRENT_MODE_LINE_HEIGHT (W) \ | |
925 | : 0) | |
926 | ||
927 | /* Height in pixels of the top line. Zero if W doesn't have a top | |
928 | line. */ | |
929 | ||
930 | #define WINDOW_DISPLAY_TOP_LINE_HEIGHT(W) \ | |
931 | (WINDOW_WANTS_TOP_LINE_P ((W)) \ | |
932 | ? CURRENT_TOP_LINE_HEIGHT (W) \ | |
933 | : 0) | |
934 | ||
935 | /* Pixel height of window W without mode line. */ | |
936 | ||
937 | #define WINDOW_DISPLAY_HEIGHT_NO_MODE_LINE(W) \ | |
938 | (WINDOW_DISPLAY_PIXEL_HEIGHT ((W)) \ | |
939 | - WINDOW_DISPLAY_MODE_LINE_HEIGHT ((W))) | |
940 | ||
941 | /* Pixel height of window W without mode and top line. */ | |
942 | ||
943 | #define WINDOW_DISPLAY_TEXT_HEIGHT(W) \ | |
944 | (WINDOW_DISPLAY_PIXEL_HEIGHT ((W)) \ | |
945 | - WINDOW_DISPLAY_MODE_LINE_HEIGHT ((W)) \ | |
946 | - WINDOW_DISPLAY_TOP_LINE_HEIGHT ((W))) | |
947 | ||
948 | /* Left edge of W in pixels relative to its frame. */ | |
949 | ||
950 | #define WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X(W) \ | |
951 | (FRAME_INTERNAL_BORDER_WIDTH_SAFE (XFRAME (WINDOW_FRAME ((W)))) \ | |
952 | + (WINDOW_LEFT_MARGIN ((W)) \ | |
953 | * CANON_X_UNIT (XFRAME (WINDOW_FRAME ((W))))) \ | |
954 | + FRAME_FLAGS_AREA_WIDTH (XFRAME (WINDOW_FRAME ((W))))) | |
955 | ||
956 | /* Right edge of window W in pixels, relative to its frame. */ | |
957 | ||
958 | #define WINDOW_DISPLAY_RIGHT_EDGE_PIXEL_X(W) \ | |
959 | (WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X ((W)) \ | |
960 | + WINDOW_DISPLAY_PIXEL_WIDTH ((W))) | |
961 | ||
962 | /* Top edge of W in pixels relative to its frame. */ | |
963 | ||
964 | #define WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y(W) \ | |
965 | (FRAME_INTERNAL_BORDER_WIDTH_SAFE (XFRAME (WINDOW_FRAME ((W)))) \ | |
966 | + (XFASTINT ((W)->top) \ | |
967 | * CANON_Y_UNIT (XFRAME (WINDOW_FRAME ((W)))))) | |
968 | ||
969 | /* Bottom edge of window W relative to its frame. */ | |
970 | ||
971 | #define WINDOW_DISPLAY_BOTTOM_EDGE_PIXEL_Y(W) \ | |
972 | (WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y ((W)) \ | |
973 | + WINDOW_DISPLAY_PIXEL_HEIGHT ((W))) | |
974 | ||
975 | /* Convert window W relative pixel X to frame pixel coordinates. */ | |
976 | ||
977 | #define WINDOW_TO_FRAME_PIXEL_X(W, X) \ | |
978 | ((X) + WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X ((W))) | |
979 | ||
980 | /* Convert window W relative pixel Y to frame pixel coordinates. */ | |
981 | ||
982 | #define WINDOW_TO_FRAME_PIXEL_Y(W, Y) \ | |
983 | ((Y) + WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y ((W))) | |
984 | ||
985 | /* Convert frame relative pixel X to window relative pixel X. */ | |
986 | ||
987 | #define FRAME_TO_WINDOW_PIXEL_X(W, X) \ | |
988 | ((X) - WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X ((W))) | |
989 | ||
990 | /* Convert frame relative pixel X to window relative pixel Y. */ | |
991 | ||
992 | #define FRAME_TO_WINDOW_PIXEL_Y(W, Y) \ | |
993 | ((Y) - WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y ((W))) | |
994 | ||
995 | /* Width of left margin area in pixels. */ | |
996 | ||
997 | #define WINDOW_DISPLAY_LEFT_AREA_PIXEL_WIDTH(W) \ | |
998 | (NILP ((W)->left_margin_width) \ | |
999 | ? 0 \ | |
1000 | : (XINT ((W)->left_margin_width) \ | |
1001 | * CANON_X_UNIT (XFRAME (WINDOW_FRAME ((W)))))) | |
1002 | ||
1003 | /* Width of right marginal area in pixels. */ | |
1004 | ||
1005 | #define WINDOW_DISPLAY_RIGHT_AREA_PIXEL_WIDTH(W) \ | |
1006 | (NILP ((W)->right_margin_width) \ | |
1007 | ? 0 \ | |
1008 | : (XINT ((W)->right_margin_width) \ | |
1009 | * CANON_X_UNIT (XFRAME (WINDOW_FRAME ((W)))))) | |
1010 | ||
1011 | /* Width of text area in pixels. */ | |
1012 | ||
1013 | #define WINDOW_DISPLAY_TEXT_AREA_PIXEL_WIDTH(W) \ | |
1014 | (WINDOW_DISPLAY_PIXEL_WIDTH ((W)) \ | |
1015 | - WINDOW_DISPLAY_LEFT_AREA_PIXEL_WIDTH ((W)) \ | |
1016 | - WINDOW_DISPLAY_RIGHT_AREA_PIXEL_WIDTH ((W))) | |
1017 | ||
1018 | /* Convert a text area relative x-position in window W to frame X | |
1019 | pixel coordinates. */ | |
1020 | ||
1021 | #define WINDOW_TEXT_TO_FRAME_PIXEL_X(W, X) \ | |
1022 | (WINDOW_TO_FRAME_PIXEL_X ((W), (X)) \ | |
1023 | + WINDOW_DISPLAY_LEFT_AREA_PIXEL_WIDTH ((W))) | |
1024 | ||
1025 | /* Translate an x-position relative to AREA in window W to frame pixel | |
1026 | coordinates. */ | |
1027 | ||
1028 | #define WINDOW_AREA_TO_FRAME_PIXEL_X(W, AREA, X) \ | |
1029 | (WINDOW_TO_FRAME_PIXEL_X ((W), (X)) \ | |
1030 | + (((AREA) > LEFT_MARGIN_AREA) \ | |
1031 | ? WINDOW_DISPLAY_LEFT_AREA_PIXEL_WIDTH ((W)) \ | |
1032 | : 0) \ | |
1033 | + (((AREA) > TEXT_AREA) \ | |
1034 | ? WINDOW_DISPLAY_TEXT_AREA_PIXEL_WIDTH ((W)) \ | |
1035 | : 0)) | |
1036 | ||
1037 | /* Return the pixel width of AREA in W. */ | |
1038 | ||
1039 | #define WINDOW_AREA_PIXEL_WIDTH(W, AREA) \ | |
1040 | (((AREA) == TEXT_AREA) \ | |
1041 | ? WINDOW_DISPLAY_TEXT_AREA_PIXEL_WIDTH ((W)) \ | |
1042 | : (((AREA) == LEFT_MARGIN_AREA) \ | |
1043 | ? WINDOW_DISPLAY_LEFT_AREA_PIXEL_WIDTH ((W)) \ | |
1044 | : WINDOW_DISPLAY_RIGHT_AREA_PIXEL_WIDTH ((W)))) | |
1045 | ||
1046 | /* Value is non-zero if window W has a mode line. */ | |
1047 | ||
1048 | #define WINDOW_WANTS_MODELINE_P(W) \ | |
1049 | (!MINI_WINDOW_P (W) \ | |
1050 | && !(W)->pseudo_window_p \ | |
1051 | && FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME (W))) \ | |
1052 | && !NILP (XBUFFER ((W)->buffer)->mode_line_format)) | |
1053 | ||
1054 | /* Value is non-zero if window W wants a top line. */ | |
1055 | ||
1056 | #define WINDOW_WANTS_TOP_LINE_P(W) \ | |
1057 | (!MINI_WINDOW_P (W) \ | |
1058 | && !(W)->pseudo_window_p \ | |
1059 | && FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME (W))) \ | |
1060 | && !NILP (XBUFFER ((W)->buffer)->top_line_format)) | |
1061 | ||
1062 | \f | |
1063 | /*********************************************************************** | |
1064 | Faces | |
1065 | ***********************************************************************/ | |
1066 | ||
1067 | /* Indices of face attributes in Lisp face vectors. Slot zero is the | |
1068 | symbol `face'. */ | |
1069 | ||
1070 | enum lface_attribute_index | |
1071 | { | |
1072 | LFACE_FAMILY_INDEX = 1, | |
1073 | LFACE_SWIDTH_INDEX, | |
1074 | LFACE_HEIGHT_INDEX, | |
1075 | LFACE_WEIGHT_INDEX, | |
1076 | LFACE_SLANT_INDEX, | |
1077 | LFACE_UNDERLINE_INDEX, | |
1078 | LFACE_INVERSE_INDEX, | |
1079 | LFACE_FOREGROUND_INDEX, | |
1080 | LFACE_BACKGROUND_INDEX, | |
1081 | LFACE_STIPPLE_INDEX, | |
1082 | LFACE_OVERLINE_INDEX, | |
1083 | LFACE_STRIKE_THROUGH_INDEX, | |
1084 | LFACE_BOX_INDEX, | |
1085 | LFACE_VECTOR_SIZE | |
1086 | }; | |
1087 | ||
1088 | ||
1089 | /* Box types of faces. */ | |
1090 | ||
1091 | enum face_box_type | |
1092 | { | |
1093 | /* No box around text. */ | |
1094 | FACE_NO_BOX, | |
1095 | ||
1096 | /* Simple box of specified width and color. Default width is 1, and | |
1097 | default color is the foreground color of the face. */ | |
1098 | FACE_SIMPLE_BOX, | |
1099 | ||
1100 | /* Boxes with 3D shadows. Color equals the background color of the | |
1101 | face. Width is specified. */ | |
1102 | FACE_RAISED_BOX, | |
1103 | FACE_SUNKEN_BOX | |
1104 | }; | |
1105 | ||
1106 | ||
1107 | /* Structure describing a realized face. | |
1108 | ||
1109 | For each Lisp face, 0..N realized faces can exist for different | |
1110 | frames and different charsets. Realized faces are built from Lisp | |
1111 | faces and text properties/overlays by merging faces and adding | |
1112 | unspecified attributes from the `default' face. */ | |
1113 | ||
9f2279ad | 1114 | struct face |
5f5c8ee5 GM |
1115 | { |
1116 | /* The id of this face. The id equals the index of this face in the | |
1117 | vector faces_by_id of its face cache. */ | |
1118 | int id; | |
1119 | ||
1120 | #ifdef HAVE_WINDOW_SYSTEM | |
1121 | ||
1122 | /* If non-zero, a GC we can use without modification to draw | |
1123 | characters in this face. */ | |
1124 | GC gc; | |
1125 | ||
1126 | /* Font used for this face, or null if the font could not be loaded | |
1127 | for some reason. This points to a `font' slot of a struct | |
1128 | font_info, and we should not call XFreeFont on it because the | |
1129 | font may still be used somewhere else. */ | |
1130 | XFontStruct *font; | |
1131 | ||
1132 | /* Background stipple or bitmap used for this face. */ | |
1133 | Pixmap stipple; | |
1134 | ||
1135 | #else /* not HAVE_WINDOW_SYSTEM */ | |
1136 | ||
1137 | /* Dummy. */ | |
1138 | int stipple; | |
1139 | ||
1140 | #endif /* not HAVE_WINDOW_SYSTEM */ | |
1141 | ||
1142 | /* Pixel value of foreground color for X frames. Color index | |
1143 | for tty frames. */ | |
1144 | unsigned long foreground; | |
1145 | ||
1146 | /* Pixel value or color index of background color. */ | |
1147 | unsigned long background; | |
1148 | ||
1149 | /* Pixel value or color index of underline color. */ | |
1150 | unsigned long underline_color; | |
1151 | ||
1152 | /* Pixel value or color index of overlined, strike-through, or box | |
1153 | color. */ | |
1154 | unsigned long overline_color; | |
1155 | unsigned long strike_through_color; | |
1156 | unsigned long box_color; | |
1157 | ||
1158 | /* The font's name. This points to a `name' of a font_info, and it | |
1159 | must not be freed. */ | |
1160 | char *font_name; | |
1161 | ||
1162 | /* The X font registry and encoding of font_name. */ | |
1163 | Lisp_Object registry; | |
1164 | ||
1165 | /* Font info ID for this face's font. An ID is stored here because | |
1166 | pointers to font_info structures may change. The reason is that | |
1167 | they are pointers into a font table vector that is itself | |
1168 | reallocated. */ | |
1169 | int font_info_id; | |
1170 | ||
1171 | /* Fontset ID if this face uses a fontset, or -1. This is only >= 0 | |
1172 | if the face was realized for CHARSET_COMPOSITION. For all other | |
1173 | charsets, a specific font is loaded from the set of fonts | |
1174 | specified by the fontset given by the family attribute of the face. */ | |
1175 | int fontset; | |
1176 | ||
1177 | /* Pixmap width and height. */ | |
1178 | unsigned int pixmap_w, pixmap_h; | |
1179 | ||
1180 | /* Non-zero means characters in this face have a box that thickness | |
1181 | around them. */ | |
1182 | int box_line_width; | |
1183 | ||
1184 | /* Type of box drawn. A value of FACE_NO_BOX means no box is drawn | |
1185 | around text in this face. A value of FACE_SIMPLE_BOX means a box | |
1186 | of width box_line_width is drawn in color box_color. A value of | |
1187 | FACE_RAISED_BOX or FACE_SUNKEN_BOX means a 3D box is drawn with | |
1188 | shadow colors derived from the background color of the face. */ | |
1189 | enum face_box_type box; | |
1190 | ||
1191 | /* If `box' above specifies a 3D type, 1 means use box_color for | |
1192 | drawing shadows. */ | |
1193 | unsigned use_box_color_for_shadows_p : 1; | |
1194 | ||
1195 | /* The Lisp face attributes this face realizes. All attributes | |
1196 | in this vector are non-nil. */ | |
1197 | Lisp_Object lface[LFACE_VECTOR_SIZE]; | |
1198 | ||
1199 | /* The hash value of this face. */ | |
1200 | unsigned hash; | |
1201 | ||
1202 | /* The charset for which this face was realized if it was realized | |
1203 | for use in multibyte text. If fontset >= 0, this is | |
1204 | CHARSET_COMPOSITION. A value of charset < 0 means the face was | |
1205 | realized for use in unibyte text where the idea of Emacs | |
1206 | charsets isn't applicable. */ | |
1207 | int charset; | |
1208 | ||
1209 | /* Non-zero if text in this face should be underlined, overlined, | |
1210 | strike-through or have a box drawn around it. */ | |
1211 | unsigned underline_p : 1; | |
1212 | unsigned overline_p : 1; | |
1213 | unsigned strike_through_p : 1; | |
1214 | ||
1215 | /* 1 means that the colors specified for this face could not be | |
1216 | loaded, and were replaced by default colors, so they shouldn't be | |
1217 | freed. */ | |
1218 | unsigned foreground_defaulted_p : 1; | |
1219 | unsigned background_defaulted_p : 1; | |
1220 | ||
1221 | /* 1 means that either no color is specified for underlining or that | |
1222 | the the specified color couldn't be loaded. Use the foreground | |
1223 | color when drawing in that case. */ | |
1224 | unsigned underline_defaulted_p : 1; | |
1225 | ||
1226 | /* 1 means that either no color is specified for the corresponding | |
1227 | attribute or that the the specified color couldn't be loaded. | |
1228 | Use the foreground color when drawing in that case. */ | |
1229 | unsigned overline_color_defaulted_p : 1; | |
1230 | unsigned strike_through_color_defaulted_p : 1; | |
1231 | unsigned box_color_defaulted_p : 1; | |
1232 | ||
1233 | /* TTY appearances. Blinking is not yet implemented. Colors are | |
1234 | found in `lface' with empty color string meaning the default | |
1235 | color of the TTY. */ | |
1236 | unsigned tty_bold_p : 1; | |
1237 | unsigned tty_dim_p : 1; | |
1238 | unsigned tty_underline_p : 1; | |
1239 | unsigned tty_alt_charset_p : 1; | |
1240 | unsigned tty_reverse_p : 1; | |
1241 | unsigned tty_blinking_p : 1; | |
1242 | ||
1243 | /* Next and previous face in hash collision list of face cache. */ | |
1244 | struct face *next, *prev; | |
1245 | }; | |
1246 | ||
1247 | ||
1248 | /* Color index indicating that face uses a terminal's default color. */ | |
1249 | ||
1250 | #define FACE_TTY_DEFAULT_COLOR ((unsigned long) -1) | |
1251 | ||
1252 | /* Non-zero if FACE was realized for unibyte use. */ | |
1253 | ||
1254 | #define FACE_UNIBYTE_P(FACE) ((FACE)->charset < 0) | |
1255 | ||
1256 | ||
1257 | /* IDs of important faces known by the C face code. These are the IDs | |
1258 | of the faces for CHARSET_ASCII. */ | |
1259 | ||
1260 | enum face_id | |
1261 | { | |
1262 | DEFAULT_FACE_ID, | |
1263 | MODE_LINE_FACE_ID, | |
1264 | TOOLBAR_FACE_ID, | |
1265 | BITMAP_AREA_FACE_ID, | |
1266 | TOP_LINE_FACE_ID, | |
1267 | BASIC_FACE_ID_SENTINEL | |
1268 | }; | |
1269 | ||
1270 | ||
1271 | /* A cache of realized faces. Each frame has its own cache because | |
1272 | Emacs allows different frame-local face definitions. */ | |
1273 | ||
1274 | struct face_cache | |
1275 | { | |
1276 | /* Hash table of cached realized faces. */ | |
1277 | struct face **buckets; | |
1278 | ||
1279 | /* Back-pointer to the frame this cache belongs to. */ | |
1280 | struct frame *f; | |
1281 | ||
1282 | /* A vector of faces so that faces can be referenced by an ID. */ | |
1283 | struct face **faces_by_id; | |
1284 | ||
1285 | /* The allocated size, and number of used slots of faces_by_id. */ | |
1286 | int size, used; | |
1287 | }; | |
1288 | ||
1289 | ||
1290 | /* Prepare face FACE for use on frame F. This must be called before | |
1291 | using X resources of FACE. */ | |
1292 | ||
1293 | #define PREPARE_FACE_FOR_DISPLAY(F, FACE) \ | |
1294 | if ((FACE)->gc == 0) \ | |
1295 | prepare_face_for_display ((F), (FACE)); \ | |
1296 | else \ | |
1297 | (void) 0 | |
1298 | ||
1299 | /* Return a pointer to the face with ID on frame F, or null if such a | |
1300 | face doesn't exist. */ | |
1301 | ||
1302 | #define FACE_FROM_ID(F, ID) \ | |
1303 | (((ID) >= 0 && (ID) < FRAME_FACE_CACHE (F)->used) \ | |
1304 | ? FRAME_FACE_CACHE (F)->faces_by_id[ID] \ | |
1305 | : NULL) | |
1306 | ||
1307 | /* Non-zero if FACE is suitable for displaying characters of CHARSET. | |
1308 | CHARSET < 0 means unibyte text. */ | |
1309 | ||
1310 | #define FACE_SUITABLE_FOR_CHARSET_P(FACE, CHARSET) \ | |
1311 | (((CHARSET) < 0 \ | |
1312 | ? (EQ ((FACE)->registry, Vface_default_registry) \ | |
1313 | || !NILP (Fequal ((FACE)->registry, Vface_default_registry))) \ | |
1314 | : ((FACE)->charset == (CHARSET) \ | |
1315 | || ((FACE)->charset == CHARSET_ASCII \ | |
1316 | && (CHARSET) == charset_latin_iso8859_1 \ | |
1317 | && face_suitable_for_iso8859_1_p ((FACE))) \ | |
1318 | || ((FACE)->charset == charset_latin_iso8859_1 \ | |
1319 | && (CHARSET) == CHARSET_ASCII)))) | |
1320 | ||
1321 | /* Return the id of the realized face on frame F that is like the face | |
1322 | with id ID but is suitable for displaying characters of CHARSET. | |
1323 | This macro is only meaningful for CHARSET >= 0, i.e. multibyte | |
1324 | text. */ | |
1325 | ||
1326 | #define FACE_FOR_CHARSET(F, ID, CHARSET) \ | |
1327 | (FACE_SUITABLE_FOR_CHARSET_P (FACE_FROM_ID ((F), (ID)), (CHARSET)) \ | |
1328 | ? (ID) \ | |
1329 | : lookup_face ((F), FACE_FROM_ID ((F), (ID))->lface, (CHARSET))) | |
1330 | ||
1331 | /* The default registry and encoding to use. */ | |
1332 | ||
1333 | extern Lisp_Object Vface_default_registry; | |
1334 | ||
1335 | /* Non-zero means face attributes have been changed since the last | |
1336 | redisplay. Used in redisplay_internal. */ | |
1337 | ||
1338 | extern int face_change_count; | |
1339 | ||
1340 | ||
1341 | ||
1342 | \f | |
1343 | /*********************************************************************** | |
1344 | Display Iterator | |
1345 | ***********************************************************************/ | |
1346 | ||
1347 | /* Iteration over things to display in current_buffer or in a string. | |
1348 | ||
1349 | The iterator handles: | |
1350 | ||
1351 | 1. Overlay strings (after-string, before-string). | |
1352 | 2. Face properties. | |
1353 | 3. Invisible text properties. | |
1354 | 4. Selective display. | |
1355 | 5. Translation of characters via display tables. | |
1356 | 6. Translation of control characters to the forms `\003' or `^C'. | |
1357 | 7. `glyph' and `space-width' properties. | |
1358 | ||
1359 | Iterators are initialized by calling init_iterator or one of the | |
1360 | equivalent functions below. A call to get_next_display_element | |
1361 | loads the iterator structure with information about what next to | |
1362 | display. A call to set_iterator_to_next increments the iterator's | |
1363 | position. | |
1364 | ||
1365 | Characters from overlay strings, display table entries or control | |
1366 | character translations are returned one at a time. For example, if | |
1367 | we have a text of `a\x01' where `a' has a display table definition | |
1368 | of `cd' and the control character is displayed with a leading | |
1369 | arrow, then the iterator will return: | |
1370 | ||
1371 | Call Return Source Call next | |
1372 | ----------------------------------------------------------------- | |
1373 | next c display table move | |
1374 | next d display table move | |
1375 | next ^ control char move | |
1376 | next A control char move | |
1377 | ||
1378 | The same mechanism is also used to return characters for ellipses | |
1379 | displayed at the end of invisible text. | |
1380 | ||
1381 | CAVEAT: Under some circumstances, move_.* functions can be called | |
1382 | asynchronously, e.g. when computing a buffer position from an x and | |
1383 | y pixel position. This means that these functions and functions | |
1384 | called from them SHOULD NOT USE xmalloc and alike. See also the | |
1385 | comment at the start of xdisp.c. */ | |
1386 | ||
1387 | /* Enumeration describing what kind of display element an iterator is | |
1388 | loaded with after a call to get_next_display_element. */ | |
1389 | ||
1390 | enum display_element_type | |
1391 | { | |
1392 | /* A normal character. */ | |
1393 | IT_CHARACTER, | |
1394 | ||
1395 | /* An image. */ | |
1396 | IT_IMAGE, | |
1397 | ||
1398 | /* A flexible width and height space. */ | |
1399 | IT_STRETCH, | |
1400 | ||
1401 | /* End of buffer or string. */ | |
1402 | IT_EOB, | |
1403 | ||
1404 | /* Truncation glyphs. Never returned by get_next_display_element. | |
1405 | Used to get display information about truncation glyphs via | |
1406 | produce_glyphs. */ | |
1407 | IT_TRUNCATION, | |
1408 | ||
1409 | /* Continuation glyphs. See the comment for IT_TRUNCATION. */ | |
1410 | IT_CONTINUATION | |
1411 | }; | |
1412 | ||
1413 | ||
1414 | /* An enumerator for each text property that has a meaning for display | |
1415 | purposes. */ | |
1416 | ||
1417 | enum prop_idx | |
1418 | { | |
1419 | FONTIFIED_PROP_IDX, | |
1420 | FACE_PROP_IDX, | |
1421 | INVISIBLE_PROP_IDX, | |
1422 | DISPLAY_PROP_IDX, | |
1423 | ||
1424 | /* Not a property. Used to indicate changes in overlays. */ | |
1425 | OVERLAY_PROP_IDX, | |
1426 | ||
1427 | /* Sentinel. */ | |
1428 | LAST_PROP_IDX | |
1429 | }; | |
1430 | ||
1431 | ||
1432 | struct it | |
1433 | { | |
1434 | /* The window in which we iterate over current_buffer (or a string). */ | |
1435 | Lisp_Object window; | |
1436 | struct window *w; | |
1437 | ||
1438 | /* The window's frame. */ | |
1439 | struct frame *f; | |
1440 | ||
1441 | /* Function to call to load this structure with the next display | |
1442 | element. */ | |
1443 | int (* method) P_ ((struct it *it)); | |
1444 | ||
1445 | /* The next position at which to check for face changes, invisible | |
1446 | text, overlay strings, end of text etc., which see. */ | |
1447 | int stop_charpos; | |
1448 | ||
1449 | /* Maximum string or buffer position + 1. ZV when iterating over | |
1450 | current_buffer. */ | |
1451 | int end_charpos; | |
1452 | ||
1453 | /* C string to iterate over. Non-null means get characters from | |
1454 | this string, otherwise characters are read from current_buffer | |
1455 | or it->string. */ | |
1456 | unsigned char *s; | |
1457 | ||
1458 | /* Number of characters in the string (s, or it->string) we iterate | |
1459 | over. */ | |
1460 | int string_nchars; | |
1461 | ||
1462 | /* Start and end of a visible region; -1 if the region is not | |
1463 | visible in the window. */ | |
1464 | int region_beg_charpos, region_end_charpos; | |
1465 | ||
1466 | /* Position at which redisplay end trigger functions should be run. */ | |
1467 | int redisplay_end_trigger_charpos; | |
1468 | ||
1469 | /* 1 means multibyte characters are enabled. */ | |
1470 | unsigned multibyte_p : 1; | |
1471 | ||
5f5c8ee5 GM |
1472 | /* 1 means window has a mode line at its top. */ |
1473 | unsigned top_line_p : 1; | |
1474 | ||
1475 | /* 1 means `string' is the value of a `display' property. | |
1476 | Don't handle some `display' properties in these strings. */ | |
1477 | unsigned string_from_display_prop_p : 1; | |
1478 | ||
1479 | /* Display table in effect or null for none. */ | |
1480 | struct Lisp_Char_Table *dp; | |
1481 | ||
1482 | /* Current display table vector to return characters from and its | |
1483 | end. dpvec null means we are not returning characters from a | |
1484 | display table entry; current.dpvec_index gives the current index | |
1485 | into dpvec. This same mechanism is also used to return | |
1486 | characters from translated control characters, i.e. `\003' or | |
1487 | `^C'. */ | |
1488 | Lisp_Object *dpvec, *dpend; | |
1489 | ||
1490 | /* Length in bytes of the char that filled dpvec. A value of zero | |
1491 | means that no character such character is involved. */ | |
1492 | int dpvec_char_len; | |
1493 | ||
1494 | /* Face id of the iterator saved in case a glyph from dpvec contains | |
1495 | a face. The face is restored when all glyphs from dpvec have | |
1496 | been delivered. */ | |
1497 | int saved_face_id; | |
1498 | ||
1499 | /* Vector of glyphs for control character translation. The pointer | |
1500 | dpvec is set to ctl_chars when a control character is translated. */ | |
1501 | Lisp_Object ctl_chars[4]; | |
1502 | ||
1503 | /* Current buffer or string position of the iterator, including | |
1504 | position in overlay strings etc. */ | |
1505 | struct display_pos current; | |
1506 | ||
1507 | /* Vector of overlays to process. Overlay strings are processed | |
1508 | OVERLAY_STRING_CHUNK_SIZE at a time. */ | |
1509 | #define OVERLAY_STRING_CHUNK_SIZE 3 | |
1510 | Lisp_Object overlay_strings[OVERLAY_STRING_CHUNK_SIZE]; | |
1511 | ||
1512 | /* Total number of overlay strings to process. This can be > | |
1513 | OVERLAY_STRING_CHUNK_SIZE. */ | |
1514 | int n_overlay_strings; | |
1515 | ||
1516 | /* If non-nil, a Lisp string being processed. If | |
1517 | current.overlay_string_index >= 0, this is an overlay string from | |
1518 | pos. */ | |
1519 | Lisp_Object string; | |
1520 | ||
1521 | /* Stack of saved values. New entries are pushed when we begin to | |
1522 | process an overlay string or a string from a `glyph' property. | |
1523 | Entries are popped when we return to deliver display elements | |
1524 | from what we previously had. */ | |
1525 | struct iterator_stack_entry | |
9f2279ad | 1526 | { |
5f5c8ee5 GM |
1527 | int stop_charpos; |
1528 | int face_id; | |
1529 | Lisp_Object string; | |
1530 | struct display_pos pos; | |
1531 | int end_charpos; | |
1532 | int string_nchars; | |
1533 | enum glyph_row_area area; | |
1534 | unsigned multibyte_p : 1; | |
1535 | unsigned string_from_display_prop_p : 1; | |
1536 | Lisp_Object space_width; | |
1537 | short voffset; | |
1538 | Lisp_Object font_height; | |
1539 | } | |
1540 | stack[2]; | |
dfbb1e90 | 1541 | |
5f5c8ee5 GM |
1542 | /* Stack pointer. */ |
1543 | int sp; | |
1544 | ||
1545 | /* Setting of buffer-local variable selective-display-ellipsis. */ | |
1546 | unsigned selective_display_ellipsis_p : 1; | |
1547 | ||
1548 | /* 1 means control characters are translated into the form `^C' | |
1549 | where the `^' can be replaced by a display table entry. */ | |
1550 | unsigned ctl_arrow_p : 1; | |
1551 | ||
1552 | /* -1 means selective display hides everything between a \r and the | |
1553 | next newline; > 0 means hide lines indented more than that value. */ | |
1554 | int selective; | |
1555 | ||
1556 | /* An enumeration describing what the next display element is | |
1557 | after a call to get_next_display_element. */ | |
1558 | enum display_element_type what; | |
dfbb1e90 | 1559 | |
5f5c8ee5 GM |
1560 | /* Face to use. */ |
1561 | int face_id; | |
1562 | ||
1563 | /* Non-zero means that the current face has a box. */ | |
1564 | unsigned face_box_p : 1; | |
1565 | ||
1566 | /* Non-null means that the current character is the first in a run | |
1567 | of characters with box face. */ | |
1568 | unsigned start_of_box_run_p : 1; | |
9f2279ad | 1569 | |
5f5c8ee5 GM |
1570 | /* Non-zero means that the current character is the last in a run |
1571 | of characters with box face. */ | |
1572 | unsigned end_of_box_run_p : 1; | |
1573 | ||
1574 | /* 1 means overlay strings at end_charpos have been processed. */ | |
1575 | unsigned overlay_strings_at_end_processed_p : 1; | |
1576 | ||
1577 | /* The ID of the default face to use. One of DEFAULT_FACE_ID, | |
1578 | MODE_LINE_FACE_ID, or TOOLBAR_FACE_ID, depending on what we | |
1579 | are displaying. */ | |
1580 | int base_face_id; | |
1581 | ||
1582 | /* If what == IT_CHARACTER, character and length in bytes. This is | |
1583 | a character from a buffer or string. It may be different from | |
1584 | the character displayed in case that | |
1585 | unibyte_display_via_language_environment is set. */ | |
1586 | int c, len; | |
1587 | ||
1588 | /* The character to display, possibly translated to multibyte | |
1589 | if unibyte_display_via_language_environment is set. This | |
1590 | is set after x_produce_glyphs has been called. */ | |
1591 | int char_to_display; | |
1592 | ||
1593 | /* Charset for which face_id was computed. This is the charset | |
1594 | of char_to_display after x_produce_glyphs has been called. */ | |
1595 | int charset; | |
1596 | ||
1597 | /* If what == IT_IMAGE, the id of the image to display. */ | |
1598 | int image_id; | |
1599 | ||
1600 | /* Value of the `space-width' property, if any; nil if none. */ | |
1601 | Lisp_Object space_width; | |
1602 | ||
1603 | /* Computed from the value of the `raise' property. */ | |
1604 | short voffset; | |
1605 | ||
1606 | /* Value of the `height' property, if any; nil if none. */ | |
1607 | Lisp_Object font_height; | |
1608 | ||
1609 | /* Object and position where the current display element came from. | |
1610 | Object can be a Lisp string in case the current display element | |
1611 | comes from an overlay string, or it is buffer. Position is | |
1612 | a position in object. */ | |
1613 | Lisp_Object object; | |
1614 | struct text_pos position; | |
1615 | ||
1616 | /* 1 means lines are truncated. */ | |
1617 | unsigned truncate_lines_p : 1; | |
1618 | ||
1619 | /* Number of columns per \t. */ | |
1620 | short tab_width; | |
1621 | ||
1622 | /* Width in pixels of truncation and continuation glyphs. */ | |
1623 | short truncation_pixel_width, continuation_pixel_width; | |
1624 | ||
1625 | /* First and last visible x-position in the display area. If window | |
1626 | is hscrolled by n columns, first_visible_x == n * CANON_X_UNIT | |
1627 | (f), and last_visible_x == pixel width of W + first_visible_x. */ | |
1628 | int first_visible_x, last_visible_x; | |
1629 | ||
1630 | /* Last visible y-position + 1 in the display area without a mode | |
1631 | line, if the window has one. */ | |
1632 | int last_visible_y; | |
1633 | ||
1634 | /* Width of a prompt in front of the line. Used to perform tab | |
1635 | calculations. The x on which tab calculations are based is | |
1636 | current_x - prompt_width + continuation_lines_width. */ | |
1637 | int prompt_width; | |
1638 | ||
1639 | /* If non-null, glyphs are produced in glyph_row with each call to | |
1640 | produce_glyphs. */ | |
1641 | struct glyph_row *glyph_row; | |
1642 | ||
1643 | /* The area of glyph_row to which glyphs are added. */ | |
1644 | enum glyph_row_area area; | |
1645 | ||
1646 | /* Number of glyphs needed for the last character requested via | |
1647 | produce_glyphs. This is 1 except for tabs. */ | |
1648 | int nglyphs; | |
1649 | ||
1650 | /* Width of the display element in pixels. Result of | |
1651 | produce_glyphs. */ | |
1652 | int pixel_width; | |
1653 | ||
2febf6e0 GM |
1654 | /* Current, maximum logical, and maximum physical line height |
1655 | information. Result of produce_glyphs. */ | |
5f5c8ee5 | 1656 | int ascent, descent, max_ascent, max_descent; |
2febf6e0 | 1657 | int phys_ascent, phys_descent, max_phys_ascent, max_phys_descent; |
5f5c8ee5 GM |
1658 | |
1659 | /* Current x pixel position within the display line. This value | |
1660 | does not include the width of continuation lines in front of the | |
1661 | line. The value of current_x is automatically incremented by | |
1662 | pixel_width with each call to produce_glyphs. */ | |
1663 | int current_x; | |
1664 | ||
1665 | /* Accumulated width of continuation lines. If > 0, this means we | |
1666 | are currently in a continuation line. This is initially zero and | |
1667 | incremented/reset by display_line, move_it_to etc. */ | |
1668 | int continuation_lines_width; | |
1669 | ||
1670 | /* Current y-position. Automatically incremented by the height of | |
1671 | glyph_row in move_it_to and display_line. */ | |
1672 | int current_y; | |
1673 | ||
1674 | /* Current vertical matrix position, or line number. Automatically | |
1675 | incremented by move_it_to and display_line. */ | |
1676 | int vpos; | |
1677 | ||
1678 | /* Horizontal matrix position reached in move_it_in_display_line. | |
1679 | Only set there, not in display_line. */ | |
1680 | int hpos; | |
1681 | }; | |
1682 | ||
1683 | ||
1684 | /* Access to positions of iterator IT. */ | |
1685 | ||
1686 | #define IT_CHARPOS(IT) CHARPOS ((IT).current.pos) | |
1687 | #define IT_BYTEPOS(IT) BYTEPOS ((IT).current.pos) | |
1688 | #define IT_STRING_CHARPOS(IT) CHARPOS ((IT).current.string_pos) | |
1689 | #define IT_STRING_BYTEPOS(IT) BYTEPOS ((IT).current.string_pos) | |
1690 | ||
1691 | /* Test if IT has reached the end of its buffer or string. This will | |
1692 | only work after get_next_display_element has been called. */ | |
1693 | ||
1694 | #define ITERATOR_AT_END_P(IT) ((IT)->what == IT_EOB) | |
1695 | ||
1696 | /* Non-zero means IT is at the end of a line. This is the case if it | |
1697 | is either on a newline or on a carriage return and selective | |
1698 | display hides the rest of the line. */ | |
1699 | ||
1700 | #define ITERATOR_AT_END_OF_LINE_P(IT) \ | |
1701 | ((IT)->what == IT_CHARACTER \ | |
1702 | && ((IT)->c == '\n' \ | |
1703 | || ((IT)->c == '\r' && (IT)->selective))) | |
1704 | ||
1705 | /* Call produce_glyphs or produce_glyphs_hook, if set. Shortcut to | |
1706 | avoid the function call overhead. */ | |
1707 | ||
1708 | #define PRODUCE_GLYPHS(IT) \ | |
1709 | (rif \ | |
1710 | ? rif->produce_glyphs ((IT)) \ | |
1711 | : produce_glyphs ((IT))) | |
1712 | ||
1713 | /* Bit-flags indicating what operation move_it_to should perform. */ | |
1714 | ||
1715 | enum move_operation_enum | |
1716 | { | |
1717 | /* Stop if specified x-position is reached. */ | |
1718 | MOVE_TO_X = 0x01, | |
1719 | ||
1720 | /* Stop if specified y-position is reached. */ | |
1721 | MOVE_TO_Y = 0x02, | |
1722 | ||
1723 | /* Stop if specified vpos is reached. */ | |
1724 | MOVE_TO_VPOS = 0x04, | |
1725 | ||
1726 | /* Stop if specified buffer or string position is reached. */ | |
1727 | MOVE_TO_POS = 0x08 | |
1728 | }; | |
1729 | ||
1730 | ||
1731 | \f | |
1732 | /*********************************************************************** | |
1733 | Window-based redisplay interface | |
1734 | ***********************************************************************/ | |
1735 | ||
1736 | /* Structure used to describe runs of lines that must be scrolled. */ | |
1737 | ||
1738 | struct run | |
1739 | { | |
1740 | /* Source and destination y pixel position. */ | |
1741 | int desired_y, current_y; | |
1742 | ||
1743 | /* Source and destination vpos in matrix. */ | |
1744 | int desired_vpos, current_vpos; | |
1745 | ||
1746 | /* Height in pixels, number of glyph rows. */ | |
1747 | int height, nrows; | |
1748 | }; | |
1749 | ||
1750 | ||
1751 | /* Structure holding system-dependent interface functions needed | |
1752 | for window-based redisplay. */ | |
1753 | ||
1754 | struct redisplay_interface | |
1755 | { | |
1756 | /* Produce glyphs/get display metrics for the display element IT is | |
1757 | loaded with. */ | |
1758 | void (*produce_glyphs) P_ ((struct it *it)); | |
9f2279ad | 1759 | |
5f5c8ee5 GM |
1760 | /* Write or insert LEN glyphs from STRING at the nominal output |
1761 | position. */ | |
1762 | void (*write_glyphs) P_ ((struct glyph *string, int len)); | |
1763 | void (*insert_glyphs) P_ ((struct glyph *start, int len)); | |
1764 | ||
1765 | /* Clear from nominal output position to X. X < 0 means clear | |
1766 | to right end of display. */ | |
1767 | void (*clear_end_of_line) P_ ((int x)); | |
9f2279ad | 1768 | |
5f5c8ee5 GM |
1769 | /* Function to call to scroll the display as described by RUN on |
1770 | window W. */ | |
1771 | void (*scroll_run_hook) P_ ((struct window *w, struct run *run)); | |
1772 | ||
1773 | /* Function to call after a line in a display has been completely | |
1774 | updated. Used to draw truncation marks and alike. DESIRED_ROW | |
1775 | is the desired row which has been updated. */ | |
1776 | void (*after_update_window_line_hook) P_ ((struct glyph_row *desired_row)); | |
42087301 | 1777 | |
5f5c8ee5 GM |
1778 | /* Function to call before beginning to update window W in |
1779 | window-based redisplay. */ | |
1780 | void (*update_window_begin_hook) P_ ((struct window *w)); | |
1781 | ||
1782 | /* Function to call after window W has been updated in window-based | |
1783 | redisplay. CURSOR_ON_P non-zero means switch cursor on. */ | |
1784 | void (*update_window_end_hook) P_ ((struct window *w, int cursor_on_p)); | |
9f2279ad | 1785 | |
5f5c8ee5 GM |
1786 | /* Move cursor to row/column position VPOS/HPOS, pixel coordinates |
1787 | Y/X. HPOS/VPOS are window-relative row and column numbers and X/Y | |
1788 | are window-relative pixel positions. */ | |
1789 | void (*cursor_to) P_ ((int vpos, int hpos, int y, int x)); | |
1790 | ||
1791 | /* Flush the display of frame F. For X, this is XFlush. */ | |
1792 | void (*flush_display) P_ ((struct frame *f)); | |
1793 | ||
1794 | /* Set *LEFT and *RIGHT to the left and right overhang of GLYPH on | |
1795 | frame F. */ | |
1796 | void (*get_glyph_overhangs) P_ ((struct glyph *glyph, struct frame *f, | |
1797 | int *left, int *right)); | |
2febf6e0 GM |
1798 | |
1799 | /* Fix the display of AREA of ROW in window W for overlapping rows. | |
1800 | This function is called from redraw_overlapping_rows after | |
1801 | desired rows have been made current. */ | |
1802 | void (*fix_overlapping_area) P_ ((struct window *w, struct glyph_row *row, | |
1803 | enum glyph_row_area area)); | |
5f5c8ee5 GM |
1804 | }; |
1805 | ||
1806 | /* The current interface for window-based redisplay. */ | |
1807 | ||
1808 | extern struct redisplay_interface *rif; | |
1809 | ||
1810 | /* Hook to call in estimate_mode_line_height. */ | |
1811 | ||
1812 | extern int (* estimate_mode_line_height_hook) P_ ((struct frame *, | |
1813 | enum face_id)); | |
1814 | ||
1815 | \f | |
1816 | /*********************************************************************** | |
1817 | Images | |
1818 | ***********************************************************************/ | |
1819 | ||
1820 | #ifdef HAVE_X_WINDOWS | |
1821 | ||
1822 | /* Structure forward declarations. */ | |
1823 | ||
1824 | struct image; | |
1825 | ||
1826 | ||
1827 | /* Each image format (JPEG, IIFF, ...) supported is described by | |
1828 | a structure of the type below. */ | |
1829 | ||
1830 | struct image_type | |
1831 | { | |
1832 | /* A symbol uniquely identifying the image type, .e.g `jpeg'. */ | |
1833 | Lisp_Object *type; | |
1834 | ||
1835 | /* Check that SPEC is a valid image specification for the given | |
1836 | image type. Value is non-zero if SPEC is valid. */ | |
1837 | int (* valid_p) P_ ((Lisp_Object spec)); | |
1838 | ||
1839 | /* Load IMG which is used on frame F from information contained in | |
1840 | IMG->spec. Value is non-zero if successful. */ | |
1841 | int (* load) P_ ((struct frame *f, struct image *img)); | |
1842 | ||
1843 | /* Free resources of image IMG which is used on frame F. */ | |
1844 | void (* free) P_ ((struct frame *f, struct image *img)); | |
9f2279ad | 1845 | |
5f5c8ee5 GM |
1846 | /* Next in list of all supported image types. */ |
1847 | struct image_type *next; | |
1848 | }; | |
9f2279ad | 1849 | |
9f2279ad | 1850 | |
5f5c8ee5 GM |
1851 | /* Structure describing an image. Specific image formats like XBM are |
1852 | converted into this form, so that display only has to deal with | |
1853 | this type of image. */ | |
9f2279ad | 1854 | |
5f5c8ee5 GM |
1855 | struct image |
1856 | { | |
1857 | /* The time in seconds at which the image was last displayed. Set | |
1858 | in prepare_image_for_display. */ | |
1859 | unsigned long timestamp; | |
9f2279ad | 1860 | |
5f5c8ee5 GM |
1861 | /* Pixmaps of the image. */ |
1862 | Pixmap pixmap, mask; | |
9f2279ad | 1863 | |
5f5c8ee5 GM |
1864 | /* Colors allocated for this image, if any. Allocated via xmalloc. */ |
1865 | unsigned long *colors; | |
1866 | int ncolors; | |
9f2279ad | 1867 | |
5f5c8ee5 GM |
1868 | /* Width and height of the image. */ |
1869 | int width, height; | |
87485d6f | 1870 | |
5f5c8ee5 GM |
1871 | /* These values are used for the rectangles displayed for images |
1872 | that can't be loaded. */ | |
1873 | #define DEFAULT_IMAGE_WIDTH 30 | |
1874 | #define DEFAULT_IMAGE_HEIGHT 30 | |
9f2279ad | 1875 | |
5f5c8ee5 GM |
1876 | /* Percent of image height used as ascent. */ |
1877 | int ascent; | |
1878 | #define DEFAULT_IMAGE_ASCENT 50 | |
c22ca93b | 1879 | |
5f5c8ee5 GM |
1880 | /* Lisp specification of this image. */ |
1881 | Lisp_Object spec; | |
c22ca93b | 1882 | |
5f5c8ee5 GM |
1883 | /* Relief to draw around the image. */ |
1884 | int relief; | |
c22ca93b | 1885 | |
5f5c8ee5 GM |
1886 | /* Optional margin around the image. This includes the relief. */ |
1887 | int margin; | |
1888 | ||
1889 | /* Reference to the type of the image. */ | |
1890 | struct image_type *type; | |
1891 | ||
1892 | /* A place for image types to store additional data. The member | |
1893 | data.lisp_val is marked during GC, so it's safe to store Lisp data | |
1894 | there. Image types should free this data when their `free' | |
1895 | function is called. */ | |
1896 | struct | |
c22ca93b | 1897 | { |
5f5c8ee5 GM |
1898 | int int_val; |
1899 | void *ptr_val; | |
1900 | Lisp_Object lisp_val; | |
1901 | } data; | |
c22ca93b | 1902 | |
5f5c8ee5 GM |
1903 | /* Hash value of image specification to speed up comparisons. */ |
1904 | unsigned hash; | |
1905 | ||
1906 | /* Image id of this image. */ | |
1907 | int id; | |
1908 | ||
1909 | /* Hash collision chain. */ | |
1910 | struct image *next, *prev; | |
1911 | }; | |
1912 | ||
1913 | ||
1914 | /* Cache of images. Each frame has a cache. X frames with the same | |
1915 | x_display_info share their caches. */ | |
1916 | ||
1917 | struct image_cache | |
1918 | { | |
1919 | /* Hash table of images. */ | |
1920 | struct image **buckets; | |
1921 | ||
1922 | /* Vector mapping image ids to images. */ | |
1923 | struct image **images; | |
1924 | ||
1925 | /* Allocated size of `images'. */ | |
1926 | unsigned size; | |
1927 | ||
1928 | /* Number of images in the cache. */ | |
1929 | unsigned used; | |
1930 | ||
1931 | /* Reference count (number of frames sharing this cache). */ | |
1932 | int refcount; | |
1933 | }; | |
1934 | ||
1935 | ||
1936 | /* Value is the ascent of image IMG. */ | |
1937 | ||
1938 | #define IMAGE_ASCENT(IMG) \ | |
1939 | (((IMG)->height + (IMG)->margin) * (IMG)->ascent / 100.0) | |
1940 | ||
1941 | /* Value is a pointer to the image with id ID on frame F, or null if | |
1942 | no image with that id exists. */ | |
1943 | ||
1944 | #define IMAGE_FROM_ID(F, ID) \ | |
1945 | (((ID) >= 0 && (ID) < (FRAME_X_IMAGE_CACHE (F)->used)) \ | |
1946 | ? FRAME_X_IMAGE_CACHE (F)->images[ID] \ | |
1947 | : NULL) | |
1948 | ||
1949 | /* Size of bucket vector of image caches. Should be prime. */ | |
1950 | ||
1951 | #define IMAGE_CACHE_BUCKETS_SIZE 1001 | |
1952 | ||
1953 | #endif /* HAVE_X_WINDOWS */ | |
1954 | ||
1955 | ||
1956 | \f | |
1957 | /*********************************************************************** | |
1958 | Toolbars | |
1959 | ***********************************************************************/ | |
1960 | ||
1961 | /* Enumeration defining where to find toolbar item information in | |
1962 | toolbar items vectors stored with frames. Each toolbar item | |
1963 | occupies TOOLBAR_ITEM_NSLOTS elements in such a vector. */ | |
1964 | ||
1965 | enum toolbar_item_idx | |
1966 | { | |
1967 | /* The key of the toolbar item. Used to remove items when a binding | |
1968 | for `undefined' is found. */ | |
1969 | TOOLBAR_ITEM_KEY, | |
1970 | ||
1971 | /* Non-nil if item is enabled. */ | |
1972 | TOOLBAR_ITEM_ENABLED_P, | |
1973 | ||
1974 | /* Non-nil if item is selected (pressed). */ | |
1975 | TOOLBAR_ITEM_SELECTED_P, | |
1976 | ||
1977 | /* Caption. */ | |
1978 | TOOLBAR_ITEM_CAPTION, | |
1979 | ||
1980 | /* Image(s) to display. This is either a single image specification | |
1981 | or a vector of specifications. */ | |
1982 | TOOLBAR_ITEM_IMAGES, | |
1983 | ||
1984 | /* The binding. */ | |
1985 | TOOLBAR_ITEM_BINDING, | |
1986 | ||
1987 | /* Button type. One of nil, `:radio' or `:toggle'. */ | |
1988 | TOOLBAR_ITEM_TYPE, | |
c22ca93b | 1989 | |
5f5c8ee5 GM |
1990 | /* Help string. */ |
1991 | TOOLBAR_ITEM_HELP, | |
1992 | ||
1993 | /* Sentinel = number of slots in toolbar_items occupied by one | |
1994 | toolbar item. */ | |
1995 | TOOLBAR_ITEM_NSLOTS | |
1996 | }; | |
1997 | ||
1998 | ||
1999 | /* An enumeration for the different images that can be specified | |
2000 | for a toolbar item. */ | |
2001 | ||
2002 | enum toolbar_item_image | |
2003 | { | |
2004 | TOOLBAR_IMAGE_ENABLED_SELECTED, | |
2005 | TOOLBAR_IMAGE_ENABLED_DESELECTED, | |
2006 | TOOLBAR_IMAGE_DISABLED_SELECTED, | |
2007 | TOOLBAR_IMAGE_DISABLED_DESELECTED | |
2008 | }; | |
2009 | ||
2010 | /* Non-zero means raise toolbar buttons when the mouse moves over them. */ | |
2011 | ||
2012 | extern int auto_raise_toolbar_buttons_p; | |
2013 | ||
2014 | /* Margin around toolbar buttons in pixels. */ | |
2015 | ||
2016 | extern int toolbar_button_margin; | |
2017 | ||
2018 | /* Thickness of relief to draw around toolbar buttons. */ | |
2019 | ||
2020 | extern int toolbar_button_relief; | |
2021 | ||
2022 | ||
2023 | \f | |
2024 | /*********************************************************************** | |
2025 | Function Prototypes | |
2026 | ***********************************************************************/ | |
2027 | ||
2028 | /* Defined in xdisp.c */ | |
2029 | ||
2030 | int try_window P_ ((Lisp_Object, struct text_pos)); | |
2031 | void window_box P_ ((struct window *, int, int *, int *, int *, int *)); | |
2032 | int window_box_height P_ ((struct window *)); | |
2033 | int window_text_bottom_y P_ ((struct window *)); | |
2034 | int window_box_width P_ ((struct window *, int)); | |
2035 | int window_box_left P_ ((struct window *, int)); | |
2036 | int window_box_right P_ ((struct window *, int)); | |
2037 | void window_box_edges P_ ((struct window *, int, int *, int *, int *, int *)); | |
2038 | void mark_window_display_accurate P_ ((Lisp_Object, int)); | |
2039 | void redisplay_preserve_echo_area P_ ((void)); | |
2040 | void set_cursor_from_row P_ ((struct window *, struct glyph_row *, | |
2041 | struct glyph_matrix *, int, int, int, int)); | |
2042 | void init_iterator P_ ((struct it *, struct window *, int, | |
2043 | int, struct glyph_row *, enum face_id)); | |
2044 | void init_iterator_to_row_start P_ ((struct it *, struct window *, | |
2045 | struct glyph_row *)); | |
2046 | int get_next_display_element P_ ((struct it *)); | |
2047 | void set_iterator_to_next P_ ((struct it *)); | |
2048 | void produce_glyphs P_ ((struct it *)); | |
2049 | void produce_special_glyphs P_ ((struct it *, enum display_element_type)); | |
2050 | void start_display P_ ((struct it *, struct window *, struct text_pos)); | |
2051 | void move_it_to P_ ((struct it *, int, int, int, int, int)); | |
2052 | void move_it_vertically P_ ((struct it *, int)); | |
2053 | void move_it_by_lines P_ ((struct it *, int, int)); | |
2054 | int frame_mode_line_height P_ ((struct frame *)); | |
2055 | void highlight_trailing_whitespace P_ ((struct frame *, struct glyph_row *)); | |
2056 | int toolbar_item_info P_ ((struct frame *, struct glyph *, int *)); | |
2057 | extern Lisp_Object Qtoolbar; | |
c1ff17c5 | 2058 | extern Lisp_Object Vshow_trailing_whitespace; |
5f5c8ee5 GM |
2059 | extern int redisplaying_p; |
2060 | ||
2061 | /* Defined in sysdep.c */ | |
2062 | ||
2063 | void get_frame_size P_ ((int *, int *)); | |
2064 | void request_sigio P_ ((void)); | |
2065 | void unrequest_sigio P_ ((void)); | |
2066 | int tabs_safe_p P_ ((void)); | |
2067 | void init_baud_rate P_ ((void)); | |
2068 | void init_sigio P_ ((int)); | |
2069 | ||
2070 | /* Defined in xface.c */ | |
2071 | ||
2072 | char *x_charset_registry P_ ((int)); | |
2073 | void clear_face_cache P_ ((int)); | |
1cc03123 EZ |
2074 | unsigned long load_color P_ ((struct frame *, struct face *, Lisp_Object, |
2075 | enum lface_attribute_index)); | |
5f5c8ee5 GM |
2076 | void unload_color P_ ((struct frame *, unsigned long)); |
2077 | int frame_update_line_height P_ ((struct frame *)); | |
2078 | int ascii_face_of_lisp_face P_ ((struct frame *, int)); | |
2079 | void prepare_face_for_display P_ ((struct frame *, struct face *)); | |
2080 | int face_suitable_for_iso8859_1_p P_ ((struct face *)); | |
2081 | int xstricmp P_ ((unsigned char *, unsigned char *)); | |
2082 | int lookup_face P_ ((struct frame *, Lisp_Object *, int)); | |
2083 | int face_suitable_for_charset_p P_ ((struct face *, int)); | |
2084 | int lookup_named_face P_ ((struct frame *, Lisp_Object, int)); | |
2085 | int smaller_face P_ ((struct frame *, int, int)); | |
2086 | int face_with_height P_ ((struct frame *, int, int)); | |
1cc03123 | 2087 | int lookup_derived_face P_ ((struct frame *, Lisp_Object, int, int)); |
5f5c8ee5 GM |
2088 | void init_frame_faces P_ ((struct frame *)); |
2089 | void free_frame_faces P_ ((struct frame *)); | |
2090 | void recompute_basic_faces P_ ((struct frame *)); | |
2091 | int face_at_buffer_position P_ ((struct window *, int, int, int, int *, | |
2092 | int, int)); | |
2093 | int face_at_string_position P_ ((struct window *, Lisp_Object, | |
2094 | int, int, int, int, int *, enum face_id)); | |
2095 | int compute_char_face P_ ((struct frame *, int, Lisp_Object)); | |
2096 | void free_all_realized_faces P_ ((Lisp_Object)); | |
2097 | extern Lisp_Object Qforeground_color, Qbackground_color; | |
2098 | ||
2099 | /* Defined in xfns.c */ | |
2100 | ||
2101 | #ifdef HAVE_X_WINDOWS | |
2102 | ||
2103 | int x_screen_planes P_ ((struct frame *)); | |
2104 | void x_implicitly_set_name P_ ((struct frame *, Lisp_Object, Lisp_Object)); | |
2105 | struct image_cache *make_image_cache P_ ((void)); | |
2106 | void free_image_cache P_ ((struct frame *)); | |
2107 | void clear_image_cache P_ ((struct frame *, int)); | |
2108 | void forall_images_in_image_cache P_ ((struct frame *, | |
2109 | void (*) P_ ((struct image *)))); | |
2110 | int valid_image_p P_ ((Lisp_Object)); | |
2111 | void prepare_image_for_display P_ ((struct frame *, struct image *)); | |
2112 | int lookup_image P_ ((struct frame *, Lisp_Object)); | |
2113 | extern struct frame *tip_frame; | |
2114 | extern Window tip_window; | |
2115 | EXFUN (Fx_show_tip, 4); | |
2116 | EXFUN (Fx_hide_tip, 0); | |
2117 | EXFUN (Fx_show_busy_cursor, 0); | |
2118 | EXFUN (Fx_hide_busy_cursor, 1); | |
2119 | extern int inhibit_busy_cursor; | |
2120 | extern int display_busy_cursor_p; | |
2121 | ||
2122 | #endif /* HAVE_X_WINDOWS */ | |
2123 | ||
2124 | ||
2125 | /* Defined in xmenu.c */ | |
2126 | ||
2127 | int popup_activated P_ ((void)); | |
2128 | ||
3f7267e7 | 2129 | /* Defined in dispnew.c */ |
5f5c8ee5 | 2130 | |
3f7267e7 | 2131 | int estimate_mode_line_height P_ ((struct frame *, enum face_id)); |
5f5c8ee5 | 2132 | Lisp_Object mode_line_string P_ ((struct window *, int, int, int, int *)); |
ec5d8db7 AS |
2133 | extern void redraw_frame P_ ((struct frame *)); |
2134 | extern void redraw_garbaged_frames P_ ((void)); | |
ec5d8db7 | 2135 | extern void cancel_line P_ ((int, struct frame *)); |
ec5d8db7 | 2136 | extern void init_desired_glyphs P_ ((struct frame *)); |
ec5d8db7 | 2137 | extern int scroll_frame_lines P_ ((struct frame *, int, int, int, int)); |
ec5d8db7 AS |
2138 | extern int direct_output_for_insert P_ ((int)); |
2139 | extern int direct_output_forward_char P_ ((int)); | |
2140 | extern int update_frame P_ ((struct frame *, int, int)); | |
ec5d8db7 | 2141 | extern int scrolling P_ ((struct frame *)); |
ec5d8db7 | 2142 | extern void bitch_at_user P_ ((void)); |
5f5c8ee5 GM |
2143 | void adjust_glyphs P_ ((struct frame *)); |
2144 | void free_glyphs P_ ((struct frame *)); | |
2145 | void free_window_matrices P_ ((struct window *)); | |
2146 | void check_glyph_memory P_ ((void)); | |
2147 | void mirrored_line_dance P_ ((struct glyph_matrix *, int, int, int *, char *)); | |
2148 | void clear_glyph_matrix P_ ((struct glyph_matrix *)); | |
2149 | void clear_current_matrices P_ ((struct frame *f)); | |
2150 | void clear_desired_matrices P_ ((struct frame *)); | |
2151 | void shift_glyph_matrix P_ ((struct window *, struct glyph_matrix *, | |
2152 | int, int, int)); | |
2153 | void rotate_matrix P_ ((struct glyph_matrix *, int, int, int)); | |
2154 | void increment_glyph_matrix_buffer_positions P_ ((struct glyph_matrix *, | |
2155 | int, int, int, int)); | |
2156 | void blank_row P_ ((struct window *, struct glyph_row *, int)); | |
2157 | void increment_glyph_row_buffer_positions P_ ((struct glyph_row *, int, int)); | |
2158 | void enable_glyph_matrix_rows P_ ((struct glyph_matrix *, int, int, int)); | |
2159 | void clear_glyph_row P_ ((struct glyph_row *)); | |
2160 | void prepare_desired_row P_ ((struct glyph_row *)); | |
2161 | int line_hash_code P_ ((struct glyph_row *)); | |
2162 | void set_window_update_flags P_ ((struct window *, int)); | |
2163 | void write_glyphs P_ ((struct glyph *, int)); | |
2164 | void insert_glyphs P_ ((struct glyph *, int)); | |
2165 | void redraw_frame P_ ((struct frame *)); | |
2166 | void redraw_garbaged_frames P_ ((void)); | |
2167 | int scroll_cost P_ ((struct frame *, int, int, int)); | |
2168 | int direct_output_for_insert P_ ((int)); | |
2169 | int direct_output_forward_char P_ ((int)); | |
2170 | int update_frame P_ ((struct frame *, int, int)); | |
2171 | void update_single_window P_ ((struct window *, int)); | |
2172 | int scrolling P_ ((struct frame *)); | |
2173 | int buffer_posn_from_coords P_ ((struct window *, int *, int *)); | |
3f7267e7 GM |
2174 | void do_pending_window_change P_ ((int)); |
2175 | void change_frame_size P_ ((struct frame *, int, int, int, int, int)); | |
5f5c8ee5 GM |
2176 | void bitch_at_user P_ ((void)); |
2177 | Lisp_Object sit_for P_ ((int, int, int, int, int)); | |
2178 | void init_display P_ ((void)); | |
2179 | void syms_of_display P_ ((void)); | |
ec5d8db7 AS |
2180 | |
2181 | /* Defined in term.c */ | |
5f5c8ee5 | 2182 | |
ec5d8db7 AS |
2183 | extern void ring_bell P_ ((void)); |
2184 | extern void set_terminal_modes P_ ((void)); | |
2185 | extern void reset_terminal_modes P_ ((void)); | |
2186 | extern void update_begin P_ ((struct frame *)); | |
2187 | extern void update_end P_ ((struct frame *)); | |
2188 | extern void set_terminal_window P_ ((int)); | |
2189 | extern void set_scroll_region P_ ((int, int)); | |
2190 | extern void turn_off_insert P_ ((void)); | |
2191 | extern void turn_off_highlight P_ ((void)); | |
2192 | extern void background_highlight P_ ((void)); | |
2193 | extern void reassert_line_highlight P_ ((int, int)); | |
ec5d8db7 AS |
2194 | extern void clear_frame P_ ((void)); |
2195 | extern void clear_end_of_line P_ ((int)); | |
2196 | extern void clear_end_of_line_raw P_ ((int)); | |
ec5d8db7 AS |
2197 | extern void delete_glyphs P_ ((int)); |
2198 | extern void ins_del_lines P_ ((int, int)); | |
2199 | extern int string_cost P_ ((char *)); | |
2200 | extern int per_line_cost P_ ((char *)); | |
2201 | extern void calculate_costs P_ ((struct frame *)); | |
2202 | extern void term_init P_ ((char *)); | |
2203 | extern void fatal P_ ((/* char *, ... */)); | |
5f5c8ee5 GM |
2204 | void cursor_to P_ ((int, int)); |
2205 | void change_line_highlight P_ ((int, int, int, int)); | |
ec5d8db7 AS |
2206 | |
2207 | /* Defined in scroll.c */ | |
5f5c8ee5 | 2208 | |
ec5d8db7 AS |
2209 | extern int scrolling_max_lines_saved P_ ((int, int, int *, int *, int *)); |
2210 | extern int scroll_cost P_ ((struct frame *, int, int, int)); | |
2211 | extern void do_line_insertion_deletion_costs P_ ((struct frame *, char *, | |
2212 | char *, char *, char *, | |
2213 | char *, char *, int)); | |
5f5c8ee5 GM |
2214 | void scrolling_1 P_ ((struct frame *, int, int, int, int *, int *, int *, |
2215 | int *, int)); | |
87485d6f | 2216 | |
5f5c8ee5 | 2217 | #endif /* not DISPEXTERN_H_INCLUDED */ |