Commit | Line | Data |
---|---|---|
c22ca93b | 1 | /* Interface definitions for display code. |
c4f2431a | 2 | Copyright (C) 1985, 1993, 1994, 1997, 1998, 1999, 2000, 2001, 2002, 2003 |
5f5c8ee5 | 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 | |
4d2036e4 | 22 | /* New redisplay written by Gerd Moellmann <gerd@gnu.org>. */ |
87485d6f | 23 | |
5f5c8ee5 GM |
24 | #ifndef DISPEXTERN_H_INCLUDED |
25 | #define DISPEXTERN_H_INCLUDED | |
c22ca93b JB |
26 | |
27 | #ifdef HAVE_X_WINDOWS | |
94e32607 | 28 | |
9f2279ad | 29 | #include <X11/Xlib.h> |
8317e104 GM |
30 | #ifdef USE_X_TOOLKIT |
31 | #include <X11/Intrinsic.h> | |
32 | #endif /* USE_X_TOOLKIT */ | |
94e32607 JB |
33 | |
34 | #else /* !HAVE_X_WINDOWS */ | |
35 | ||
36 | /* X-related stuff used by non-X gui code. */ | |
37 | ||
38 | typedef struct { | |
39 | unsigned long pixel; | |
40 | unsigned short red, green, blue; | |
41 | char flags; | |
42 | char pad; | |
43 | } XColor; | |
44 | ||
8317e104 | 45 | #endif /* HAVE_X_WINDOWS */ |
87485d6f MW |
46 | |
47 | #ifdef MSDOS | |
48 | #include "msdos.h" | |
49 | #endif | |
9f2279ad | 50 | |
d74b2553 KS |
51 | #ifdef HAVE_X_WINDOWS |
52 | typedef struct x_display_info Display_Info; | |
53 | #define NativeRectangle XRectangle | |
54 | #endif | |
55 | ||
497fbd42 | 56 | #ifdef HAVE_NTGUI |
c0ac470c | 57 | #include "w32gui.h" |
d74b2553 | 58 | typedef struct w32_display_info Display_Info; |
497fbd42 GV |
59 | #endif |
60 | ||
365fa1b3 | 61 | #ifdef HAVE_CARBON |
1a578e9b | 62 | #include "macgui.h" |
d74b2553 | 63 | typedef struct mac_display_info Display_Info; |
365fa1b3 AC |
64 | |
65 | /* Include Carbon.h to define Cursor and Rect. */ | |
66 | #undef mktime | |
67 | #undef DEBUG | |
68 | #undef Z | |
69 | #undef free | |
70 | #undef malloc | |
71 | #undef realloc | |
72 | /* Macros max and min defined in lisp.h conflict with those in | |
73 | precompiled header Carbon.h. */ | |
74 | #undef max | |
75 | #undef min | |
76 | #undef init_process | |
77 | #include <Carbon/Carbon.h> | |
78 | #undef Z | |
79 | #define Z (current_buffer->text->z) | |
80 | #undef free | |
81 | #define free unexec_free | |
82 | #undef malloc | |
83 | #define malloc unexec_malloc | |
84 | #undef realloc | |
85 | #define realloc unexec_realloc | |
86 | #undef min | |
87 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
88 | #undef max | |
89 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
90 | #undef init_process | |
91 | #define init_process emacs_init_process | |
92 | ||
29c42596 | 93 | #endif |
5f5c8ee5 | 94 | |
d74b2553 | 95 | |
dfbe5d05 KS |
96 | #ifndef NativeRectangle |
97 | #define NativeRectangle int | |
98 | #endif | |
99 | ||
100 | ||
5f5c8ee5 GM |
101 | /* Structure forward declarations. Some are here because function |
102 | prototypes below reference structure types before their definition | |
103 | in this file. Some are here because not every file including | |
104 | dispextern.h also includes frame.h and windows.h. */ | |
105 | ||
106 | struct glyph; | |
107 | struct glyph_row; | |
108 | struct glyph_matrix; | |
109 | struct glyph_pool; | |
110 | struct frame; | |
111 | struct window; | |
112 | ||
113 | ||
d74b2553 KS |
114 | /* Values returned from coordinates_in_window. */ |
115 | ||
116 | enum window_part | |
117 | { | |
118 | ON_NOTHING, | |
119 | ON_TEXT, | |
120 | ON_MODE_LINE, | |
121 | ON_VERTICAL_BORDER, | |
122 | ON_HEADER_LINE, | |
123 | ON_LEFT_FRINGE, | |
124 | ON_RIGHT_FRINGE, | |
125 | ON_LEFT_MARGIN, | |
126 | ON_RIGHT_MARGIN | |
127 | }; | |
128 | ||
129 | ||
5f5c8ee5 | 130 | \f |
5f5c8ee5 GM |
131 | /*********************************************************************** |
132 | Debugging | |
133 | ***********************************************************************/ | |
134 | ||
135 | /* If GLYPH_DEBUG is non-zero, additional checks are activated. Turn | |
136 | it off by defining the macro GLYPH_DEBUG to zero. */ | |
137 | ||
138 | #ifndef GLYPH_DEBUG | |
139 | #define GLYPH_DEBUG 0 | |
140 | #endif | |
141 | ||
142 | /* Macros to include code only if GLYPH_DEBUG != 0. */ | |
143 | ||
144 | #if GLYPH_DEBUG | |
145 | #define IF_DEBUG(X) X | |
5ae040a6 | 146 | #define xassert(X) do {if (!(X)) abort ();} while (0) |
5f5c8ee5 GM |
147 | #else |
148 | #define IF_DEBUG(X) (void) 0 | |
149 | #define xassert(X) (void) 0 | |
150 | #endif | |
151 | ||
152 | /* Macro for displaying traces of redisplay. If Emacs was compiled | |
153 | with GLYPH_DEBUG != 0, the variable trace_redisplay_p can be set to | |
154 | a non-zero value in debugging sessions to activate traces. */ | |
155 | ||
156 | #if GLYPH_DEBUG | |
157 | ||
158 | extern int trace_redisplay_p; | |
159 | #include <stdio.h> | |
160 | ||
161 | #define TRACE(X) \ | |
162 | if (trace_redisplay_p) \ | |
163 | fprintf X; \ | |
164 | else \ | |
165 | (void) 0 | |
166 | ||
167 | #else /* GLYPH_DEBUG == 0 */ | |
168 | ||
169 | #define TRACE(X) (void) 0 | |
170 | ||
171 | #endif /* GLYPH_DEBUG == 0 */ | |
172 | ||
177c0ea7 | 173 | |
5f5c8ee5 GM |
174 | \f |
175 | /*********************************************************************** | |
176 | Text positions | |
177 | ***********************************************************************/ | |
178 | ||
179 | /* Starting with Emacs 20.3, characters from strings and buffers have | |
180 | both a character and a byte position associated with them. The | |
181 | following structure holds such a pair of positions. */ | |
177c0ea7 | 182 | |
5f5c8ee5 GM |
183 | struct text_pos |
184 | { | |
185 | /* Character position. */ | |
186 | int charpos; | |
187 | ||
188 | /* Corresponding byte position. */ | |
189 | int bytepos; | |
190 | }; | |
191 | ||
192 | /* Access character and byte position of POS in a functional form. */ | |
193 | ||
194 | #define BYTEPOS(POS) (POS).bytepos | |
195 | #define CHARPOS(POS) (POS).charpos | |
196 | ||
197 | /* Set character position of POS to CHARPOS, byte position to BYTEPOS. */ | |
198 | ||
199 | #define SET_TEXT_POS(POS, CHARPOS, BYTEPOS) \ | |
200 | ((POS).charpos = (CHARPOS), (POS).bytepos = BYTEPOS) | |
201 | ||
202 | /* Increment text position POS. */ | |
203 | ||
7bed37e4 | 204 | #define INC_TEXT_POS(POS, MULTIBYTE_P) \ |
5f5c8ee5 GM |
205 | do \ |
206 | { \ | |
207 | ++(POS).charpos; \ | |
7bed37e4 GM |
208 | if (MULTIBYTE_P) \ |
209 | INC_POS ((POS).bytepos); \ | |
210 | else \ | |
211 | ++(POS).bytepos; \ | |
5f5c8ee5 GM |
212 | } \ |
213 | while (0) | |
214 | ||
215 | /* Decrement text position POS. */ | |
216 | ||
7bed37e4 | 217 | #define DEC_TEXT_POS(POS, MULTIBYTE_P) \ |
5f5c8ee5 GM |
218 | do \ |
219 | { \ | |
220 | --(POS).charpos; \ | |
7bed37e4 GM |
221 | if (MULTIBYTE_P) \ |
222 | DEC_POS ((POS).bytepos); \ | |
223 | else \ | |
224 | --(POS).bytepos; \ | |
5f5c8ee5 GM |
225 | } \ |
226 | while (0) | |
227 | ||
228 | /* Set text position POS from marker MARKER. */ | |
229 | ||
230 | #define SET_TEXT_POS_FROM_MARKER(POS, MARKER) \ | |
231 | (CHARPOS (POS) = marker_position ((MARKER)), \ | |
232 | BYTEPOS (POS) = marker_byte_position ((MARKER))) | |
233 | ||
234 | /* Set marker MARKER from text position POS. */ | |
235 | ||
236 | #define SET_MARKER_FROM_TEXT_POS(MARKER, POS) \ | |
237 | set_marker_both ((MARKER), Qnil, CHARPOS ((POS)), BYTEPOS ((POS))) | |
177c0ea7 | 238 | |
5f5c8ee5 GM |
239 | /* Value is non-zero if character and byte positions of POS1 and POS2 |
240 | are equal. */ | |
241 | ||
242 | #define TEXT_POS_EQUAL_P(POS1, POS2) \ | |
243 | ((POS1).charpos == (POS2).charpos \ | |
244 | && (POS1).bytepos == (POS2).bytepos) | |
245 | ||
246 | /* When rendering glyphs, redisplay scans string or buffer text, | |
247 | overlay strings in that text, and does display table or control | |
248 | character translations. The following structure captures a | |
249 | position taking all this into account. */ | |
250 | ||
251 | struct display_pos | |
252 | { | |
253 | /* Buffer or string position. */ | |
254 | struct text_pos pos; | |
255 | ||
256 | /* If this is a position in an overlay string, overlay_string_index | |
257 | is the index of that overlay string in the sequence of overlay | |
258 | strings at `pos' in the order redisplay processes them. A value | |
259 | < 0 means that this is not a position in an overlay string. */ | |
260 | int overlay_string_index; | |
261 | ||
262 | /* If this is a position in an overlay string, string_pos is the | |
263 | position within that string. */ | |
264 | struct text_pos string_pos; | |
265 | ||
266 | /* If the character at the position above is a control character or | |
267 | has a display table entry, dpvec_index is an index in the display | |
268 | table or control character translation of that character. A | |
269 | value < 0 means this is not a position in such a translation. */ | |
270 | int dpvec_index; | |
271 | }; | |
272 | ||
273 | ||
274 | \f | |
275 | /*********************************************************************** | |
276 | Glyphs | |
277 | ***********************************************************************/ | |
278 | ||
279 | /* Enumeration of glyph types. Glyph structures contain a type field | |
280 | containing one of the enumerators defined here. */ | |
281 | ||
282 | enum glyph_type | |
283 | { | |
284 | /* Glyph describes a character. */ | |
177c0ea7 | 285 | CHAR_GLYPH, |
5f5c8ee5 | 286 | |
a90fbbf6 KH |
287 | /* Glyph describes a composition sequence. */ |
288 | COMPOSITE_GLYPH, | |
289 | ||
5f5c8ee5 GM |
290 | /* Glyph describes an image. */ |
291 | IMAGE_GLYPH, | |
292 | ||
293 | /* Glyph is a space of fractional width and/or height. */ | |
294 | STRETCH_GLYPH | |
295 | }; | |
296 | ||
297 | ||
827503c6 GM |
298 | /* Glyphs. |
299 | ||
300 | Be extra careful when changing this structure! Esp. make sure that | |
d5cc60b8 | 301 | functions producing glyphs, like append_glyph, fill ALL of the |
827503c6 GM |
302 | glyph structure, and that GLYPH_EQUAL_P compares all |
303 | display-relevant members of glyphs (not to imply that these are the | |
304 | only things to check when you add a member). */ | |
5f5c8ee5 GM |
305 | |
306 | struct glyph | |
307 | { | |
308 | /* Position from which this glyph was drawn. If `object' below is a | |
309 | Lisp string, this is a position in that string. If it is a | |
310 | buffer, this is a position in that buffer. A value of -1 | |
311 | together with a null object means glyph is a truncation glyph at | |
312 | the start of a row. */ | |
313 | int charpos; | |
314 | ||
315 | /* Lisp object source of this glyph. Currently either a buffer or | |
177c0ea7 | 316 | a string, if the glyph was produced from characters which came from |
f920e581 GM |
317 | a buffer or a string; or 0 if the glyph was inserted by redisplay |
318 | for its own purposes such as padding. */ | |
5f5c8ee5 GM |
319 | Lisp_Object object; |
320 | ||
321 | /* Width in pixels. */ | |
322 | short pixel_width; | |
323 | ||
324 | /* Vertical offset. If < 0, the glyph is displayed raised, if > 0 | |
325 | the glyph is displayed lowered. */ | |
326 | short voffset; | |
327 | ||
328 | /* Which kind of glyph this is---character, image etc. Value | |
329 | should be an enumerator of type enum glyph_type. */ | |
330 | unsigned type : 2; | |
331 | ||
332 | /* 1 means this glyph was produced from multibyte text. Zero | |
333 | means it was produced from unibyte text, i.e. charsets aren't | |
334 | applicable, and encoding is not performed. */ | |
335 | unsigned multibyte_p : 1; | |
336 | ||
337 | /* Non-zero means draw a box line at the left or right side of this | |
338 | glyph. This is part of the implementation of the face attribute | |
339 | `:box'. */ | |
340 | unsigned left_box_line_p : 1; | |
341 | unsigned right_box_line_p : 1; | |
342 | ||
2febf6e0 GM |
343 | /* Non-zero means this glyph's physical ascent or descent is greater |
344 | than its logical ascent/descent, i.e. it may potentially overlap | |
345 | glyphs above or below it. */ | |
346 | unsigned overlaps_vertically_p : 1; | |
347 | ||
3305fc6a KH |
348 | /* 1 means glyph is a padding glyph. Padding glyphs are used for |
349 | characters whose visual shape consists of more than one glyph | |
350 | (e.g. Asian characters). All but the first glyph of such a glyph | |
351 | sequence have the padding_p flag set. Only used for terminal | |
352 | frames, and there only to minimize code changes. A better way | |
353 | would probably be to use the width field of glyphs to express | |
354 | padding. */ | |
355 | unsigned padding_p : 1; | |
356 | ||
f920e581 GM |
357 | /* 1 means the actual glyph is not available, draw a box instead. |
358 | This can happen when a font couldn't be loaded, or a character | |
359 | doesn't have a glyph in a font. */ | |
b3091a23 KH |
360 | unsigned glyph_not_available_p : 1; |
361 | ||
3305fc6a | 362 | /* Face of the glyph. */ |
d5cc60b8 | 363 | unsigned face_id : 21; |
3305fc6a | 364 | |
d5cc60b8 | 365 | /* Type of font used to display the character glyph. May be used to |
b40b05b6 | 366 | determine which set of functions to use to obtain font metrics |
d5cc60b8 KS |
367 | for the glyph. On W32, value should be an enumerator of the type |
368 | w32_char_font_type. Otherwise it equals FONT_TYPE_UNKNOWN. */ | |
369 | unsigned font_type : 3; | |
b40b05b6 | 370 | |
5f5c8ee5 GM |
371 | /* A union of sub-structures for different glyph types. */ |
372 | union | |
373 | { | |
3305fc6a KH |
374 | /* Character code for character glyphs (type == CHAR_GLYPH). */ |
375 | unsigned ch; | |
5f5c8ee5 | 376 | |
3305fc6a KH |
377 | /* Composition ID for composition glyphs (type == COMPOSITION_GLYPH) */ |
378 | unsigned cmp_id; | |
a90fbbf6 | 379 | |
3305fc6a KH |
380 | /* Image ID for image glyphs (type == IMAGE_GLYPH). */ |
381 | unsigned img_id; | |
5f5c8ee5 GM |
382 | |
383 | /* Sub-structure for type == STRETCH_GLYPH. */ | |
384 | struct | |
385 | { | |
386 | /* The height of the glyph. */ | |
3305fc6a | 387 | unsigned height : 16; |
5f5c8ee5 GM |
388 | |
389 | /* The ascent of the glyph. */ | |
3305fc6a | 390 | unsigned ascent : 16; |
5f5c8ee5 GM |
391 | } |
392 | stretch; | |
177c0ea7 | 393 | |
5f5c8ee5 GM |
394 | /* Used to compare all bit-fields above in one step. */ |
395 | unsigned val; | |
396 | } u; | |
397 | }; | |
398 | ||
399 | ||
d5cc60b8 KS |
400 | /* Default value of the glyph font_type field. */ |
401 | ||
402 | #define FONT_TYPE_UNKNOWN 0 | |
403 | ||
5f5c8ee5 GM |
404 | /* Is GLYPH a space? */ |
405 | ||
406 | #define CHAR_GLYPH_SPACE_P(GLYPH) \ | |
407 | (GLYPH_FROM_CHAR_GLYPH ((GLYPH)) == SPACEGLYPH) | |
408 | ||
827503c6 | 409 | /* Are glyphs *X and *Y displayed equal? */ |
177c0ea7 | 410 | |
5f5c8ee5 GM |
411 | #define GLYPH_EQUAL_P(X, Y) \ |
412 | ((X)->type == (Y)->type \ | |
413 | && (X)->u.val == (Y)->u.val \ | |
3305fc6a KH |
414 | && (X)->face_id == (Y)->face_id \ |
415 | && (X)->padding_p == (Y)->padding_p \ | |
5f5c8ee5 GM |
416 | && (X)->left_box_line_p == (Y)->left_box_line_p \ |
417 | && (X)->right_box_line_p == (Y)->right_box_line_p \ | |
726950c4 GM |
418 | && (X)->voffset == (Y)->voffset \ |
419 | && (X)->pixel_width == (Y)->pixel_width) | |
5f5c8ee5 | 420 | |
3305fc6a KH |
421 | /* Are character codes, faces, padding_ps of glyphs *X and *Y equal? */ |
422 | ||
423 | #define GLYPH_CHAR_AND_FACE_EQUAL_P(X, Y) \ | |
424 | ((X)->u.ch == (Y)->u.ch \ | |
425 | && (X)->face_id == (Y)->face_id \ | |
426 | && (X)->padding_p == (Y)->padding_p) | |
427 | ||
5f5c8ee5 GM |
428 | /* Fill a character glyph GLYPH. CODE, FACE_ID, PADDING_P correspond |
429 | to the bits defined for the typedef `GLYPH' in lisp.h. */ | |
177c0ea7 | 430 | |
5f5c8ee5 GM |
431 | #define SET_CHAR_GLYPH(GLYPH, CODE, FACE_ID, PADDING_P) \ |
432 | do \ | |
433 | { \ | |
3305fc6a KH |
434 | (GLYPH).u.ch = (CODE); \ |
435 | (GLYPH).face_id = (FACE_ID); \ | |
436 | (GLYPH).padding_p = (PADDING_P); \ | |
5f5c8ee5 GM |
437 | } \ |
438 | while (0) | |
439 | ||
440 | /* Fill a character type glyph GLYPH from a glyph typedef FROM as | |
441 | defined in lisp.h. */ | |
177c0ea7 | 442 | |
5f5c8ee5 GM |
443 | #define SET_CHAR_GLYPH_FROM_GLYPH(GLYPH, FROM) \ |
444 | SET_CHAR_GLYPH ((GLYPH), \ | |
445 | FAST_GLYPH_CHAR ((FROM)), \ | |
446 | FAST_GLYPH_FACE ((FROM)), \ | |
3305fc6a | 447 | 0) |
5f5c8ee5 | 448 | |
3305fc6a KH |
449 | /* Construct a glyph code from a character glyph GLYPH. If the |
450 | character is multibyte, return -1 as we can't use glyph table for a | |
54bff0bd | 451 | multibyte character. */ |
177c0ea7 | 452 | |
4728a553 GM |
453 | #define GLYPH_FROM_CHAR_GLYPH(GLYPH) \ |
454 | ((GLYPH).u.ch < 256 \ | |
455 | ? ((GLYPH).u.ch | ((GLYPH).face_id << CHARACTERBITS)) \ | |
3305fc6a | 456 | : -1) |
5f5c8ee5 GM |
457 | |
458 | /* Is GLYPH a padding glyph? */ | |
177c0ea7 | 459 | |
3305fc6a | 460 | #define CHAR_GLYPH_PADDING_P(GLYPH) (GLYPH).padding_p |
5f5c8ee5 GM |
461 | |
462 | ||
463 | ||
464 | \f | |
465 | /*********************************************************************** | |
466 | Glyph Pools | |
467 | ***********************************************************************/ | |
468 | ||
469 | /* Glyph Pool. | |
470 | ||
471 | Glyph memory for frame-based redisplay is allocated from the heap | |
472 | in one vector kept in a glyph pool structure which is stored with | |
473 | the frame. The size of the vector is made large enough to cover | |
474 | all windows on the frame. | |
475 | ||
476 | Both frame and window glyph matrices reference memory from a glyph | |
477 | pool in frame-based redisplay. | |
478 | ||
479 | In window-based redisplay, no glyphs pools exist; windows allocate | |
480 | and free their glyph memory themselves. */ | |
481 | ||
482 | struct glyph_pool | |
483 | { | |
484 | /* Vector of glyphs allocated from the heap. */ | |
485 | struct glyph *glyphs; | |
486 | ||
487 | /* Allocated size of `glyphs'. */ | |
488 | int nglyphs; | |
489 | ||
490 | /* Number of rows and columns in a matrix. */ | |
491 | int nrows, ncolumns; | |
492 | }; | |
493 | ||
494 | ||
495 | \f | |
496 | /*********************************************************************** | |
497 | Glyph Matrix | |
498 | ***********************************************************************/ | |
499 | ||
500 | /* Glyph Matrix. | |
501 | ||
502 | Three kinds of glyph matrices exist: | |
503 | ||
504 | 1. Frame glyph matrices. These are used for terminal frames whose | |
505 | redisplay needs a view of the whole screen due to limited terminal | |
506 | capabilities. Frame matrices are used only in the update phase | |
507 | of redisplay. They are built in update_frame and not used after | |
508 | the update has been performed. | |
509 | ||
510 | 2. Window glyph matrices on frames having frame glyph matrices. | |
511 | Such matrices are sub-matrices of their corresponding frame matrix, | |
512 | i.e. frame glyph matrices and window glyph matrices share the same | |
513 | glyph memory which is allocated in form of a glyph_pool structure. | |
514 | Glyph rows in such a window matrix are slices of frame matrix rows. | |
515 | ||
516 | 2. Free-standing window glyph matrices managing their own glyph | |
517 | storage. This form is used in window-based redisplay which | |
518 | includes variable width and height fonts etc. | |
519 | ||
520 | The size of a window's row vector depends on the height of fonts | |
521 | defined on its frame. It is chosen so that the vector is large | |
522 | enough to describe all lines in a window when it is displayed in | |
523 | the smallest possible character size. When new fonts are loaded, | |
524 | or window sizes change, the row vector is adjusted accordingly. */ | |
525 | ||
526 | struct glyph_matrix | |
527 | { | |
528 | /* The pool from which glyph memory is allocated, if any. This is | |
529 | null for frame matrices and for window matrices managing their | |
530 | own storage. */ | |
531 | struct glyph_pool *pool; | |
532 | ||
533 | /* Vector of glyph row structures. The row at nrows - 1 is reserved | |
534 | for the mode line. */ | |
535 | struct glyph_row *rows; | |
536 | ||
537 | /* Number of elements allocated for the vector rows above. */ | |
538 | int rows_allocated; | |
539 | ||
540 | /* The number of rows used by the window if all lines were displayed | |
541 | with the smallest possible character height. */ | |
542 | int nrows; | |
543 | ||
544 | /* Origin within the frame matrix if this is a window matrix on a | |
545 | frame having a frame matrix. Both values are zero for | |
546 | window-based redisplay. */ | |
547 | int matrix_x, matrix_y; | |
548 | ||
549 | /* Width and height of the matrix in columns and rows. */ | |
550 | int matrix_w, matrix_h; | |
551 | ||
6df72db9 | 552 | /* If this structure describes a window matrix of window W, |
87388f9d KS |
553 | window_left_col is the value of W->left_col, window_top_line the |
554 | value of W->top_line, window_height and window_width are width and | |
555 | height of W, as returned by window_box, and window_vscroll is the | |
556 | value of W->vscroll at the time the matrix was last adjusted. | |
557 | Only set for window-based redisplay. */ | |
558 | int window_left_col, window_top_line; | |
559 | int window_height, window_width; | |
560 | int window_vscroll; | |
5f5c8ee5 GM |
561 | |
562 | /* Number of glyphs reserved for left and right marginal areas when | |
563 | the matrix was last adjusted. */ | |
564 | int left_margin_glyphs, right_margin_glyphs; | |
565 | ||
566 | /* Flag indicating that scrolling should not be tried in | |
567 | update_window. This flag is set by functions like try_window_id | |
568 | which do their own scrolling. */ | |
569 | unsigned no_scrolling_p : 1; | |
570 | ||
571 | /* Non-zero means window displayed in this matrix has a top mode | |
572 | line. */ | |
045dee35 | 573 | unsigned header_line_p : 1; |
5f5c8ee5 GM |
574 | |
575 | #ifdef GLYPH_DEBUG | |
576 | /* A string identifying the method used to display the matrix. */ | |
577 | char method[512]; | |
578 | #endif | |
2201e367 | 579 | |
a36d22d2 GM |
580 | /* The buffer this matrix displays. Set in |
581 | mark_window_display_accurate_1. */ | |
2201e367 GM |
582 | struct buffer *buffer; |
583 | ||
a36d22d2 GM |
584 | /* Values of BEGV and ZV as of last redisplay. Set in |
585 | mark_window_display_accurate_1. */ | |
2201e367 | 586 | int begv, zv; |
5f5c8ee5 GM |
587 | }; |
588 | ||
589 | ||
590 | /* Check that glyph pointers stored in glyph rows of MATRIX are okay. | |
591 | This aborts if any pointer is found twice. */ | |
592 | ||
593 | #if GLYPH_DEBUG | |
594 | void check_matrix_pointer_lossage P_ ((struct glyph_matrix *)); | |
595 | #define CHECK_MATRIX(MATRIX) check_matrix_pointer_lossage ((MATRIX)) | |
596 | #else | |
597 | #define CHECK_MATRIX(MATRIX) (void) 0 | |
598 | #endif | |
599 | ||
600 | ||
601 | \f | |
602 | /*********************************************************************** | |
603 | Glyph Rows | |
604 | ***********************************************************************/ | |
605 | ||
606 | /* Area in window glyph matrix. If values are added or removed, the | |
607 | function mark_object in alloc.c has to be changed. */ | |
608 | ||
609 | enum glyph_row_area | |
610 | { | |
611 | LEFT_MARGIN_AREA, | |
612 | TEXT_AREA, | |
613 | RIGHT_MARGIN_AREA, | |
614 | LAST_AREA | |
615 | }; | |
616 | ||
617 | ||
618 | /* Rows of glyphs in a windows or frame glyph matrix. | |
619 | ||
620 | Each row is partitioned into three areas. The start and end of | |
621 | each area is recorded in a pointer as shown below. | |
177c0ea7 | 622 | |
5f5c8ee5 GM |
623 | +--------------------+-------------+---------------------+ |
624 | | left margin area | text area | right margin area | | |
625 | +--------------------+-------------+---------------------+ | |
626 | | | | | | |
627 | glyphs[LEFT_MARGIN_AREA] glyphs[RIGHT_MARGIN_AREA] | |
628 | | | | |
629 | glyphs[TEXT_AREA] | | |
177c0ea7 | 630 | glyphs[LAST_AREA] |
5f5c8ee5 GM |
631 | |
632 | Rows in frame matrices reference glyph memory allocated in a frame | |
633 | glyph pool (see the description of struct glyph_pool). Rows in | |
634 | window matrices on frames having frame matrices reference slices of | |
635 | the glyphs of corresponding rows in the frame matrix. | |
177c0ea7 | 636 | |
5f5c8ee5 GM |
637 | Rows in window matrices on frames having no frame matrices point to |
638 | glyphs allocated from the heap via xmalloc; | |
639 | glyphs[LEFT_MARGIN_AREA] is the start address of the allocated | |
640 | glyph structure array. */ | |
641 | ||
642 | struct glyph_row | |
643 | { | |
644 | /* Pointers to beginnings of areas. The end of an area A is found at | |
645 | A + 1 in the vector. The last element of the vector is the end | |
646 | of the whole row. | |
647 | ||
648 | Kludge alert: Even if used[TEXT_AREA] == 0, glyphs[TEXT_AREA][0]'s | |
649 | position field is used. It is -1 if this row does not correspond | |
650 | to any text; it is some buffer position if the row corresponds to | |
651 | an empty display line that displays a line end. This is what old | |
652 | redisplay used to do. (Except in code for terminal frames, this | |
54bff0bd | 653 | kludge is no longer used, I believe. --gerd). |
5f5c8ee5 GM |
654 | |
655 | See also start, end, displays_text_p and ends_at_zv_p for cleaner | |
656 | ways to do it. The special meaning of positions 0 and -1 will be | |
657 | removed some day, so don't use it in new code. */ | |
658 | struct glyph *glyphs[1 + LAST_AREA]; | |
659 | ||
660 | /* Number of glyphs actually filled in areas. */ | |
661 | short used[LAST_AREA]; | |
662 | ||
663 | /* Window-relative x and y-position of the top-left corner of this | |
664 | row. If y < 0, this means that abs (y) pixels of the row are | |
665 | invisible because it is partially visible at the top of a window. | |
666 | If x < 0, this means that abs (x) pixels of the first glyph of | |
667 | the text area of the row are invisible because the glyph is | |
668 | partially visible. */ | |
669 | int x, y; | |
670 | ||
671 | /* Width of the row in pixels without taking face extension at the | |
6332ca8a GM |
672 | end of the row into account, and without counting truncation |
673 | and continuation glyphs at the end of a row on ttys. */ | |
5f5c8ee5 GM |
674 | int pixel_width; |
675 | ||
2febf6e0 GM |
676 | /* Logical ascent/height of this line. The value of ascent is zero |
677 | and height is 1 on terminal frames. */ | |
5f5c8ee5 GM |
678 | int ascent, height; |
679 | ||
2febf6e0 GM |
680 | /* Physical ascent/height of this line. If max_ascent > ascent, |
681 | this line overlaps the line above it on the display. Otherwise, | |
682 | if max_height > height, this line overlaps the line beneath it. */ | |
683 | int phys_ascent, phys_height; | |
684 | ||
5f5c8ee5 GM |
685 | /* Portion of row that is visible. Partially visible rows may be |
686 | found at the top and bottom of a window. This is 1 for tty | |
687 | frames. It may be < 0 in case of completely invisible rows. */ | |
688 | int visible_height; | |
689 | ||
690 | /* Hash code. This hash code is available as soon as the row | |
691 | is constructed, i.e. after a call to display_line. */ | |
692 | unsigned hash; | |
693 | ||
694 | /* First position in this row. This is the text position, including | |
695 | overlay position information etc, where the display of this row | |
696 | started, and can thus be less the position of the first glyph | |
697 | (e.g. due to invisible text or horizontal scrolling). */ | |
698 | struct display_pos start; | |
699 | ||
700 | /* Text position at the end of this row. This is the position after | |
701 | the last glyph on this row. It can be greater than the last | |
702 | glyph position + 1, due to truncation, invisible text etc. In an | |
703 | up-to-date display, this should always be equal to the start | |
704 | position of the next row. */ | |
705 | struct display_pos end; | |
706 | ||
707 | /* In a desired matrix, 1 means that this row must be updated. In a | |
708 | current matrix, 0 means that the row has been invalidated, i.e. | |
709 | the row's contents do not agree with what is visible on the | |
710 | screen. */ | |
711 | unsigned enabled_p : 1; | |
712 | ||
5f5c8ee5 GM |
713 | /* 1 means row displays a text line that is truncated on the left or |
714 | right side. */ | |
715 | unsigned truncated_on_left_p : 1; | |
716 | unsigned truncated_on_right_p : 1; | |
717 | ||
718 | /* 1 means the overlay arrow is on this line. */ | |
719 | unsigned overlay_arrow_p : 1; | |
177c0ea7 | 720 | |
5f5c8ee5 GM |
721 | /* 1 means that this row displays a continued line, i.e. it has a |
722 | continuation mark at the right side. */ | |
723 | unsigned continued_p : 1; | |
724 | ||
725 | /* 0 means that this row does not contain any text, i.e. it is | |
726 | a blank line at the window and buffer end. */ | |
727 | unsigned displays_text_p : 1; | |
728 | ||
729 | /* 1 means that this line ends at ZV. */ | |
730 | unsigned ends_at_zv_p : 1; | |
731 | ||
732 | /* 1 means the face of the last glyph in the text area is drawn to | |
733 | the right end of the window. This flag is used in | |
734 | update_text_area to optimize clearing to the end of the area. */ | |
735 | unsigned fill_line_p : 1; | |
736 | ||
737 | /* Non-zero means display a bitmap on X frames indicating that this | |
738 | line contains no text and ends in ZV. */ | |
739 | unsigned indicate_empty_line_p : 1; | |
740 | ||
741 | /* 1 means this row contains glyphs that overlap each other because | |
742 | of lbearing or rbearing. */ | |
743 | unsigned contains_overlapping_glyphs_p : 1; | |
744 | ||
54bff0bd | 745 | /* 1 means this row is as wide as the window it is displayed in, including |
afb7aabb | 746 | scroll bars, fringes, and internal borders. This also |
5f5c8ee5 GM |
747 | implies that the row doesn't have marginal areas. */ |
748 | unsigned full_width_p : 1; | |
749 | ||
54bff0bd | 750 | /* Non-zero means row is a mode or header-line. */ |
5f5c8ee5 GM |
751 | unsigned mode_line_p : 1; |
752 | ||
2febf6e0 GM |
753 | /* 1 in a current row means this row is overlapped by another row. */ |
754 | unsigned overlapped_p : 1; | |
755 | ||
666852af GM |
756 | /* 1 means this line ends in the middle of a character consisting |
757 | of more than one glyph. Some glyphs have been put in this row, | |
758 | the rest are put in rows below this one. */ | |
759 | unsigned ends_in_middle_of_char_p : 1; | |
177c0ea7 | 760 | |
666852af GM |
761 | /* 1 means this line starts in the middle of a character consisting |
762 | of more than one glyph. Some glyphs have been put in the | |
54bff0bd | 763 | previous row, the rest are put in this row. */ |
666852af GM |
764 | unsigned starts_in_middle_of_char_p : 1; |
765 | ||
2febf6e0 GM |
766 | /* 1 in a current row means this row overlaps others. */ |
767 | unsigned overlapping_p : 1; | |
768 | ||
48b509fe GM |
769 | /* 1 means some glyphs in this row are displayed in mouse-face. */ |
770 | unsigned mouse_face_p : 1; | |
771 | ||
257e3f57 GM |
772 | /* 1 means this row was ended by a newline from a string. */ |
773 | unsigned ends_in_newline_from_string_p : 1; | |
774 | ||
5f5c8ee5 GM |
775 | /* Continuation lines width at the start of the row. */ |
776 | int continuation_lines_width; | |
777 | }; | |
778 | ||
779 | ||
780 | /* Get a pointer to row number ROW in matrix MATRIX. If GLYPH_DEBUG | |
781 | is defined to a non-zero value, the function matrix_row checks that | |
782 | we don't try to access rows that are out of bounds. */ | |
783 | ||
784 | #if GLYPH_DEBUG | |
785 | struct glyph_row *matrix_row P_ ((struct glyph_matrix *, int)); | |
786 | #define MATRIX_ROW(MATRIX, ROW) matrix_row ((MATRIX), (ROW)) | |
787 | #else | |
788 | #define MATRIX_ROW(MATRIX, ROW) ((MATRIX)->rows + (ROW)) | |
789 | #endif | |
790 | ||
177c0ea7 | 791 | /* Return a pointer to the row reserved for the mode line in MATRIX. |
5f5c8ee5 GM |
792 | Row MATRIX->nrows - 1 is always reserved for the mode line. */ |
793 | ||
794 | #define MATRIX_MODE_LINE_ROW(MATRIX) \ | |
795 | ((MATRIX)->rows + (MATRIX)->nrows - 1) | |
796 | ||
54bff0bd | 797 | /* Return a pointer to the row reserved for the header line in MATRIX. |
5f5c8ee5 GM |
798 | This is always the first row in MATRIX because that's the only |
799 | way that works in frame-based redisplay. */ | |
800 | ||
045dee35 | 801 | #define MATRIX_HEADER_LINE_ROW(MATRIX) (MATRIX)->rows |
5f5c8ee5 GM |
802 | |
803 | /* Return a pointer to first row in MATRIX used for text display. */ | |
804 | ||
805 | #define MATRIX_FIRST_TEXT_ROW(MATRIX) \ | |
806 | ((MATRIX)->rows->mode_line_p ? (MATRIX)->rows + 1 : (MATRIX)->rows) | |
807 | ||
808 | /* Return a pointer to the first glyph in the text area of a row. | |
809 | MATRIX is the glyph matrix accessed, and ROW is the row index in | |
810 | MATRIX. */ | |
811 | ||
812 | #define MATRIX_ROW_GLYPH_START(MATRIX, ROW) \ | |
813 | (MATRIX_ROW ((MATRIX), (ROW))->glyphs[TEXT_AREA]) | |
814 | ||
815 | /* Return the number of used glyphs in the text area of a row. */ | |
177c0ea7 | 816 | |
5f5c8ee5 GM |
817 | #define MATRIX_ROW_USED(MATRIX, ROW) \ |
818 | (MATRIX_ROW ((MATRIX), (ROW))->used[TEXT_AREA]) | |
819 | ||
820 | /* Return the character/ byte position at which the display of ROW | |
821 | starts. */ | |
177c0ea7 | 822 | |
5f5c8ee5 GM |
823 | #define MATRIX_ROW_START_CHARPOS(ROW) ((ROW)->start.pos.charpos) |
824 | #define MATRIX_ROW_START_BYTEPOS(ROW) ((ROW)->start.pos.bytepos) | |
825 | ||
54bff0bd | 826 | /* Return the character/ byte position at which ROW ends. */ |
177c0ea7 | 827 | |
5f5c8ee5 GM |
828 | #define MATRIX_ROW_END_CHARPOS(ROW) ((ROW)->end.pos.charpos) |
829 | #define MATRIX_ROW_END_BYTEPOS(ROW) ((ROW)->end.pos.bytepos) | |
830 | ||
831 | /* Return the vertical position of ROW in MATRIX. */ | |
177c0ea7 | 832 | |
5f5c8ee5 GM |
833 | #define MATRIX_ROW_VPOS(ROW, MATRIX) ((ROW) - (MATRIX)->rows) |
834 | ||
835 | /* Return the last glyph row + 1 in MATRIX on window W reserved for | |
836 | text. If W has a mode line, the last row in the matrix is reserved | |
837 | for it. */ | |
177c0ea7 | 838 | |
5f5c8ee5 GM |
839 | #define MATRIX_BOTTOM_TEXT_ROW(MATRIX, W) \ |
840 | ((MATRIX)->rows \ | |
841 | + (MATRIX)->nrows \ | |
842 | - (WINDOW_WANTS_MODELINE_P ((W)) ? 1 : 0)) | |
843 | ||
844 | /* Non-zero if the face of the last glyph in ROW's text area has | |
845 | to be drawn to the end of the text area. */ | |
177c0ea7 | 846 | |
5f5c8ee5 GM |
847 | #define MATRIX_ROW_EXTENDS_FACE_P(ROW) ((ROW)->fill_line_p) |
848 | ||
849 | /* Set and query the enabled_p flag of glyph row ROW in MATRIX. */ | |
177c0ea7 | 850 | |
5f5c8ee5 GM |
851 | #define SET_MATRIX_ROW_ENABLED_P(MATRIX, ROW, VALUE) \ |
852 | (MATRIX_ROW ((MATRIX), (ROW))->enabled_p = (VALUE) != 0) | |
177c0ea7 | 853 | |
5f5c8ee5 GM |
854 | #define MATRIX_ROW_ENABLED_P(MATRIX, ROW) \ |
855 | (MATRIX_ROW ((MATRIX), (ROW))->enabled_p) | |
856 | ||
857 | /* Non-zero if ROW displays text. Value is non-zero if the row is | |
858 | blank but displays a line end. */ | |
177c0ea7 | 859 | |
5f5c8ee5 GM |
860 | #define MATRIX_ROW_DISPLAYS_TEXT_P(ROW) ((ROW)->displays_text_p) |
861 | ||
862 | /* Non-zero if ROW is not completely visible in window W. */ | |
177c0ea7 | 863 | |
5f5c8ee5 GM |
864 | #define MATRIX_ROW_PARTIALLY_VISIBLE_P(ROW) \ |
865 | ((ROW)->height != (ROW)->visible_height) | |
866 | ||
867 | /* Non-zero if ROW is partially visible at the top of window W. */ | |
177c0ea7 | 868 | |
5f5c8ee5 GM |
869 | #define MATRIX_ROW_PARTIALLY_VISIBLE_AT_TOP_P(W, ROW) \ |
870 | (MATRIX_ROW_PARTIALLY_VISIBLE_P ((ROW)) \ | |
87388f9d | 871 | && (ROW)->y < WINDOW_HEADER_LINE_HEIGHT ((W))) |
5f5c8ee5 GM |
872 | |
873 | /* Non-zero if ROW is partially visible at the bottom of window W. */ | |
177c0ea7 | 874 | |
5f5c8ee5 GM |
875 | #define MATRIX_ROW_PARTIALLY_VISIBLE_AT_BOTTOM_P(W, ROW) \ |
876 | (MATRIX_ROW_PARTIALLY_VISIBLE_P ((ROW)) \ | |
87388f9d | 877 | && (ROW)->y + (ROW)->height > WINDOW_BOX_HEIGHT_NO_MODE_LINE ((W))) |
5f5c8ee5 GM |
878 | |
879 | /* Return the bottom Y + 1 of ROW. */ | |
177c0ea7 | 880 | |
5f5c8ee5 GM |
881 | #define MATRIX_ROW_BOTTOM_Y(ROW) ((ROW)->y + (ROW)->height) |
882 | ||
883 | /* Is ROW the last visible one in the display described by the | |
884 | iterator structure pointed to by IT?. */ | |
177c0ea7 | 885 | |
5f5c8ee5 GM |
886 | #define MATRIX_ROW_LAST_VISIBLE_P(ROW, IT) \ |
887 | (MATRIX_ROW_BOTTOM_Y ((ROW)) >= (IT)->last_visible_y) | |
888 | ||
889 | /* Non-zero if ROW displays a continuation line. */ | |
890 | ||
891 | #define MATRIX_ROW_CONTINUATION_LINE_P(ROW) \ | |
892 | ((ROW)->continuation_lines_width > 0) | |
893 | ||
894 | /* Non-zero if ROW ends in the middle of a character. This is the | |
895 | case for continued lines showing only part of a display table entry | |
896 | or a control char, or an overlay string. */ | |
897 | ||
898 | #define MATRIX_ROW_ENDS_IN_MIDDLE_OF_CHAR_P(ROW) \ | |
899 | ((ROW)->end.dpvec_index >= 0 \ | |
666852af GM |
900 | || (ROW)->end.overlay_string_index >= 0 \ |
901 | || (ROW)->ends_in_middle_of_char_p) | |
5f5c8ee5 GM |
902 | |
903 | /* Non-zero if ROW ends in the middle of an overlay string. */ | |
904 | ||
905 | #define MATRIX_ROW_ENDS_IN_OVERLAY_STRING_P(ROW) \ | |
906 | ((ROW)->end.overlay_string_index >= 0) | |
907 | ||
908 | /* Non-zero if ROW starts in the middle of a character. See above. */ | |
177c0ea7 | 909 | |
5f5c8ee5 GM |
910 | #define MATRIX_ROW_STARTS_IN_MIDDLE_OF_CHAR_P(ROW) \ |
911 | ((ROW)->start.dpvec_index >= 0 \ | |
666852af | 912 | || (ROW)->starts_in_middle_of_char_p \ |
5f5c8ee5 GM |
913 | || ((ROW)->start.overlay_string_index >= 0 \ |
914 | && (ROW)->start.string_pos.charpos > 0)) | |
915 | ||
2febf6e0 GM |
916 | /* Non-zero means ROW overlaps its predecessor. */ |
917 | ||
918 | #define MATRIX_ROW_OVERLAPS_PRED_P(ROW) \ | |
919 | ((ROW)->phys_ascent > (ROW)->ascent) | |
920 | ||
921 | /* Non-zero means ROW overlaps its successor. */ | |
922 | ||
923 | #define MATRIX_ROW_OVERLAPS_SUCC_P(ROW) \ | |
924 | ((ROW)->phys_height - (ROW)->phys_ascent \ | |
925 | > (ROW)->height - (ROW)->ascent) | |
926 | ||
5f5c8ee5 GM |
927 | /* Non-zero means that fonts have been loaded since the last glyph |
928 | matrix adjustments. The function redisplay_internal adjusts glyph | |
929 | matrices when this flag is non-zero. */ | |
930 | ||
931 | extern int fonts_changed_p; | |
932 | ||
933 | /* A glyph for a space. */ | |
934 | ||
935 | extern struct glyph space_glyph; | |
936 | ||
fe01239f GM |
937 | /* Frame being updated by update_window/update_frame. */ |
938 | ||
939 | extern struct frame *updating_frame; | |
940 | ||
5f5c8ee5 GM |
941 | /* Window being updated by update_window. This is non-null as long as |
942 | update_window has not finished, and null otherwise. It's role is | |
943 | analogous to updating_frame. */ | |
944 | ||
945 | extern struct window *updated_window; | |
946 | ||
947 | /* Glyph row and area updated by update_window_line. */ | |
948 | ||
949 | extern struct glyph_row *updated_row; | |
950 | extern int updated_area; | |
951 | ||
952 | /* Non-zero means reading single-character input with prompt so put | |
953 | cursor on mini-buffer after the prompt. Positive means at end of | |
954 | text in echo area; negative means at beginning of line. */ | |
955 | ||
956 | extern int cursor_in_echo_area; | |
957 | ||
958 | /* Non-zero means last display completed. Zero means it was | |
959 | preempted. */ | |
960 | ||
961 | extern int display_completed; | |
962 | ||
963 | /* Non-zero means redisplay has been performed directly (see also | |
964 | direct_output_for_insert and direct_output_forward_char), so that | |
965 | no further updating has to be performed. The function | |
966 | redisplay_internal checks this flag, and does nothing but reset it | |
967 | to zero if it is non-zero. */ | |
968 | ||
969 | extern int redisplay_performed_directly_p; | |
970 | ||
971 | /* A temporary storage area, including a row of glyphs. Initialized | |
972 | in xdisp.c. Used for various purposes, as an example see | |
973 | direct_output_for_insert. */ | |
974 | ||
975 | extern struct glyph_row scratch_glyph_row; | |
976 | ||
977 | ||
978 | \f | |
d5cc60b8 KS |
979 | /************************************************************************ |
980 | Glyph Strings | |
981 | ************************************************************************/ | |
982 | ||
983 | /* Enumeration for overriding/changing the face to use for drawing | |
d74b2553 | 984 | glyphs in draw_glyphs. */ |
d5cc60b8 KS |
985 | |
986 | enum draw_glyphs_face | |
987 | { | |
988 | DRAW_NORMAL_TEXT, | |
989 | DRAW_INVERSE_VIDEO, | |
990 | DRAW_CURSOR, | |
991 | DRAW_MOUSE_FACE, | |
992 | DRAW_IMAGE_RAISED, | |
993 | DRAW_IMAGE_SUNKEN | |
994 | }; | |
995 | ||
79fa9e0f KS |
996 | #ifdef HAVE_WINDOW_SYSTEM |
997 | ||
d5cc60b8 KS |
998 | /* A sequence of glyphs to be drawn in the same face. */ |
999 | ||
1000 | struct glyph_string | |
1001 | { | |
1002 | /* X-origin of the string. */ | |
1003 | int x; | |
1004 | ||
1005 | /* Y-origin and y-position of the base line of this string. */ | |
1006 | int y, ybase; | |
1007 | ||
1008 | /* The width of the string, not including a face extension. */ | |
1009 | int width; | |
1010 | ||
1011 | /* The width of the string, including a face extension. */ | |
1012 | int background_width; | |
1013 | ||
1014 | /* The height of this string. This is the height of the line this | |
1015 | string is drawn in, and can be different from the height of the | |
1016 | font the string is drawn in. */ | |
1017 | int height; | |
1018 | ||
1019 | /* Number of pixels this string overwrites in front of its x-origin. | |
1020 | This number is zero if the string has an lbearing >= 0; it is | |
1021 | -lbearing, if the string has an lbearing < 0. */ | |
1022 | int left_overhang; | |
1023 | ||
1024 | /* Number of pixels this string overwrites past its right-most | |
1025 | nominal x-position, i.e. x + width. Zero if the string's | |
1026 | rbearing is <= its nominal width, rbearing - width otherwise. */ | |
1027 | int right_overhang; | |
1028 | ||
1029 | /* The frame on which the glyph string is drawn. */ | |
1030 | struct frame *f; | |
1031 | ||
1032 | /* The window on which the glyph string is drawn. */ | |
1033 | struct window *w; | |
1034 | ||
1035 | /* X display and window for convenience. */ | |
1036 | Display *display; | |
1037 | Window window; | |
1038 | ||
1039 | /* The glyph row for which this string was built. It determines the | |
1040 | y-origin and height of the string. */ | |
1041 | struct glyph_row *row; | |
1042 | ||
1043 | /* The area within row. */ | |
1044 | enum glyph_row_area area; | |
1045 | ||
1046 | /* Characters to be drawn, and number of characters. */ | |
1047 | XChar2b *char2b; | |
1048 | int nchars; | |
1049 | ||
1050 | /* A face-override for drawing cursors, mouse face and similar. */ | |
1051 | enum draw_glyphs_face hl; | |
1052 | ||
1053 | /* Face in which this string is to be drawn. */ | |
1054 | struct face *face; | |
1055 | ||
1056 | /* Font in which this string is to be drawn. */ | |
1057 | XFontStruct *font; | |
1058 | ||
1059 | /* Font info for this string. */ | |
1060 | struct font_info *font_info; | |
1061 | ||
1062 | /* Non-null means this string describes (part of) a composition. | |
1063 | All characters from char2b are drawn composed. */ | |
1064 | struct composition *cmp; | |
1065 | ||
1066 | /* Index of this glyph string's first character in the glyph | |
1067 | definition of CMP. If this is zero, this glyph string describes | |
1068 | the first character of a composition. */ | |
1069 | int gidx; | |
1070 | ||
1071 | /* 1 means this glyph strings face has to be drawn to the right end | |
1072 | of the window's drawing area. */ | |
1073 | unsigned extends_to_end_of_line_p : 1; | |
1074 | ||
1075 | /* 1 means the background of this string has been drawn. */ | |
1076 | unsigned background_filled_p : 1; | |
1077 | ||
1078 | /* 1 means glyph string must be drawn with 16-bit functions. */ | |
1079 | unsigned two_byte_p : 1; | |
1080 | ||
1081 | /* 1 means that the original font determined for drawing this glyph | |
1082 | string could not be loaded. The member `font' has been set to | |
1083 | the frame's default font in this case. */ | |
1084 | unsigned font_not_found_p : 1; | |
1085 | ||
1086 | /* 1 means that the face in which this glyph string is drawn has a | |
1087 | stipple pattern. */ | |
1088 | unsigned stippled_p : 1; | |
1089 | ||
1090 | /* 1 means only the foreground of this glyph string must be drawn, | |
1091 | and we should use the physical height of the line this glyph | |
1092 | string appears in as clip rect. */ | |
1093 | unsigned for_overlaps_p : 1; | |
1094 | ||
1095 | /* The GC to use for drawing this glyph string. */ | |
1096 | #if defined(HAVE_X_WINDOWS) || defined(HAVE_CARBON) | |
1097 | GC gc; | |
1098 | #endif | |
1099 | #if defined(HAVE_NTGUI) | |
1100 | XGCValues *gc; | |
1101 | HDC hdc; | |
1102 | #endif | |
1103 | ||
1104 | /* A pointer to the first glyph in the string. This glyph | |
1105 | corresponds to char2b[0]. Needed to draw rectangles if | |
1106 | font_not_found_p is 1. */ | |
1107 | struct glyph *first_glyph; | |
1108 | ||
1109 | /* Image, if any. */ | |
1110 | struct image *img; | |
1111 | ||
1112 | struct glyph_string *next, *prev; | |
1113 | }; | |
1114 | ||
79fa9e0f | 1115 | #endif /* HAVE_WINDOW_SYSTEM */ |
d5cc60b8 KS |
1116 | |
1117 | \f | |
5f5c8ee5 GM |
1118 | /************************************************************************ |
1119 | Display Dimensions | |
1120 | ************************************************************************/ | |
1121 | ||
1122 | /* Return the height of the mode line in glyph matrix MATRIX, or zero | |
1123 | if not known. This macro is called under circumstances where | |
1124 | MATRIX might not have been allocated yet. */ | |
1125 | ||
1126 | #define MATRIX_MODE_LINE_HEIGHT(MATRIX) \ | |
1127 | ((MATRIX) && (MATRIX)->rows \ | |
1128 | ? MATRIX_MODE_LINE_ROW (MATRIX)->height \ | |
1129 | : 0) | |
1130 | ||
54bff0bd | 1131 | /* Return the height of the header line in glyph matrix MATRIX, or zero |
5f5c8ee5 GM |
1132 | if not known. This macro is called under circumstances where |
1133 | MATRIX might not have been allocated yet. */ | |
1134 | ||
045dee35 | 1135 | #define MATRIX_HEADER_LINE_HEIGHT(MATRIX) \ |
5f5c8ee5 | 1136 | ((MATRIX) && (MATRIX)->rows \ |
045dee35 | 1137 | ? MATRIX_HEADER_LINE_ROW (MATRIX)->height \ |
5f5c8ee5 GM |
1138 | : 0) |
1139 | ||
a4610492 KS |
1140 | /* Return the desired face id for the mode line of a window, depending |
1141 | on whether the window is selected or not, or if the window is the | |
1142 | scrolling window for the currently active minibuffer window. | |
1143 | ||
1144 | Due to the way display_mode_lines manipulates with the contents of | |
1145 | selected_window, this macro needs three arguments: SELW which is | |
1146 | compared against the current value of selected_window, MBW which is | |
1147 | compared against minibuf_window (if SELW doesn't match), and SCRW | |
5705966b | 1148 | which is compared against minibuf_selected_window (if MBW matches). */ |
a4610492 KS |
1149 | |
1150 | #define CURRENT_MODE_LINE_FACE_ID_3(SELW, MBW, SCRW) \ | |
5f380a5b | 1151 | ((!mode_line_in_non_selected_windows \ |
a4610492 | 1152 | || (SELW) == XWINDOW (selected_window) \ |
5f380a5b | 1153 | || (minibuf_level > 0 \ |
5705966b | 1154 | && !NILP (minibuf_selected_window) \ |
5f380a5b | 1155 | && (MBW) == XWINDOW (minibuf_window) \ |
5705966b | 1156 | && (SCRW) == XWINDOW (minibuf_selected_window))) \ |
a4610492 KS |
1157 | ? MODE_LINE_FACE_ID \ |
1158 | : MODE_LINE_INACTIVE_FACE_ID) | |
1159 | ||
1160 | ||
1161 | /* Return the desired face id for the mode line of window W. */ | |
f6911ea7 KS |
1162 | |
1163 | #define CURRENT_MODE_LINE_FACE_ID(W) \ | |
a4610492 | 1164 | (CURRENT_MODE_LINE_FACE_ID_3((W), XWINDOW (selected_window), (W))) |
f6911ea7 | 1165 | |
5f5c8ee5 | 1166 | /* Return the current height of the mode line of window W. If not |
e9e32f46 GM |
1167 | known from current_mode_line_height, look at W's current glyph |
1168 | matrix, or return a default based on the height of the font of the | |
1169 | face `mode-line'. */ | |
1170 | ||
1171 | #define CURRENT_MODE_LINE_HEIGHT(W) \ | |
1172 | (current_mode_line_height >= 0 \ | |
1173 | ? current_mode_line_height \ | |
1174 | : (MATRIX_MODE_LINE_HEIGHT ((W)->current_matrix) \ | |
1175 | ? MATRIX_MODE_LINE_HEIGHT ((W)->current_matrix) \ | |
1176 | : estimate_mode_line_height (XFRAME ((W)->frame), \ | |
f6911ea7 | 1177 | CURRENT_MODE_LINE_FACE_ID (W)))) |
5f5c8ee5 | 1178 | |
54bff0bd | 1179 | /* Return the current height of the header line of window W. If not |
e9e32f46 GM |
1180 | known from current_header_line_height, look at W's current glyph |
1181 | matrix, or return an estimation based on the height of the font of | |
1182 | the face `header-line'. */ | |
1183 | ||
1184 | #define CURRENT_HEADER_LINE_HEIGHT(W) \ | |
1185 | (current_header_line_height >= 0 \ | |
1186 | ? current_header_line_height \ | |
1187 | : (MATRIX_HEADER_LINE_HEIGHT ((W)->current_matrix) \ | |
1188 | ? MATRIX_HEADER_LINE_HEIGHT ((W)->current_matrix) \ | |
1189 | : estimate_mode_line_height (XFRAME ((W)->frame), \ | |
1190 | HEADER_LINE_FACE_ID))) | |
5f5c8ee5 GM |
1191 | |
1192 | /* Return the height of the desired mode line of window W. */ | |
1193 | ||
1194 | #define DESIRED_MODE_LINE_HEIGHT(W) \ | |
1195 | MATRIX_MODE_LINE_HEIGHT ((W)->desired_matrix) | |
1196 | ||
54bff0bd | 1197 | /* Return the height of the desired header line of window W. */ |
5f5c8ee5 | 1198 | |
045dee35 GM |
1199 | #define DESIRED_HEADER_LINE_HEIGHT(W) \ |
1200 | MATRIX_HEADER_LINE_HEIGHT ((W)->desired_matrix) | |
5f5c8ee5 | 1201 | |
54bff0bd | 1202 | /* Value is non-zero if window W wants a mode line. */ |
5f5c8ee5 GM |
1203 | |
1204 | #define WINDOW_WANTS_MODELINE_P(W) \ | |
2e8834ed | 1205 | (!MINI_WINDOW_P ((W)) \ |
5f5c8ee5 | 1206 | && !(W)->pseudo_window_p \ |
2e8834ed | 1207 | && FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME ((W)))) \ |
8801a864 | 1208 | && BUFFERP ((W)->buffer) \ |
2e8834ed | 1209 | && !NILP (XBUFFER ((W)->buffer)->mode_line_format) \ |
87388f9d | 1210 | && WINDOW_TOTAL_LINES (W) > 1) |
5f5c8ee5 | 1211 | |
54bff0bd | 1212 | /* Value is non-zero if window W wants a header line. */ |
5f5c8ee5 | 1213 | |
045dee35 | 1214 | #define WINDOW_WANTS_HEADER_LINE_P(W) \ |
2e8834ed | 1215 | (!MINI_WINDOW_P ((W)) \ |
5f5c8ee5 | 1216 | && !(W)->pseudo_window_p \ |
2e8834ed | 1217 | && FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME ((W)))) \ |
8801a864 | 1218 | && BUFFERP ((W)->buffer) \ |
2e8834ed | 1219 | && !NILP (XBUFFER ((W)->buffer)->header_line_format) \ |
87388f9d | 1220 | && WINDOW_TOTAL_LINES (W) > 1 + !NILP (XBUFFER ((W)->buffer)->mode_line_format)) |
5f5c8ee5 | 1221 | |
d74b2553 KS |
1222 | |
1223 | /* Return proper value to be used as baseline offset of font that has | |
1224 | ASCENT and DESCENT to draw characters by the font at the vertical | |
1225 | center of the line of frame F. | |
1226 | ||
1227 | Here, our task is to find the value of BOFF in the following figure; | |
1228 | ||
1229 | -------------------------+-----------+- | |
1230 | -+-+---------+-+ | | | |
1231 | | | | | | | | |
1232 | | | | | F_ASCENT F_HEIGHT | |
1233 | | | | ASCENT | | | |
1234 | HEIGHT | | | | | | |
1235 | | | |-|-+------+-----------|------- baseline | |
1236 | | | | | BOFF | | | |
1237 | | |---------|-+-+ | | | |
1238 | | | | DESCENT | | | |
1239 | -+-+---------+-+ F_DESCENT | | |
1240 | -------------------------+-----------+- | |
1241 | ||
1242 | -BOFF + DESCENT + (F_HEIGHT - HEIGHT) / 2 = F_DESCENT | |
1243 | BOFF = DESCENT + (F_HEIGHT - HEIGHT) / 2 - F_DESCENT | |
1244 | DESCENT = FONT->descent | |
1245 | HEIGHT = FONT_HEIGHT (FONT) | |
87388f9d | 1246 | F_DESCENT = (FRAME_FONT (F)->descent |
d74b2553 KS |
1247 | - F->output_data.x->baseline_offset) |
1248 | F_HEIGHT = FRAME_LINE_HEIGHT (F) | |
1249 | */ | |
1250 | ||
1251 | #define VCENTER_BASELINE_OFFSET(FONT, F) \ | |
1252 | (FONT_DESCENT (FONT) \ | |
1253 | + (FRAME_LINE_HEIGHT ((F)) - FONT_HEIGHT ((FONT)) \ | |
1254 | + (FRAME_LINE_HEIGHT ((F)) > FONT_HEIGHT ((FONT)))) / 2 \ | |
1255 | - (FONT_DESCENT (FRAME_FONT (F)) - FRAME_BASELINE_OFFSET (F))) | |
1256 | ||
177c0ea7 | 1257 | \f |
5f5c8ee5 GM |
1258 | /*********************************************************************** |
1259 | Faces | |
1260 | ***********************************************************************/ | |
177c0ea7 | 1261 | |
5f5c8ee5 GM |
1262 | /* Indices of face attributes in Lisp face vectors. Slot zero is the |
1263 | symbol `face'. */ | |
1264 | ||
1265 | enum lface_attribute_index | |
1266 | { | |
1267 | LFACE_FAMILY_INDEX = 1, | |
1268 | LFACE_SWIDTH_INDEX, | |
1269 | LFACE_HEIGHT_INDEX, | |
1270 | LFACE_WEIGHT_INDEX, | |
1271 | LFACE_SLANT_INDEX, | |
1272 | LFACE_UNDERLINE_INDEX, | |
1273 | LFACE_INVERSE_INDEX, | |
1274 | LFACE_FOREGROUND_INDEX, | |
1275 | LFACE_BACKGROUND_INDEX, | |
1276 | LFACE_STIPPLE_INDEX, | |
1277 | LFACE_OVERLINE_INDEX, | |
1278 | LFACE_STRIKE_THROUGH_INDEX, | |
1279 | LFACE_BOX_INDEX, | |
b3091a23 | 1280 | LFACE_FONT_INDEX, |
cd68bbe8 | 1281 | LFACE_INHERIT_INDEX, |
670019ba | 1282 | LFACE_AVGWIDTH_INDEX, |
5f5c8ee5 GM |
1283 | LFACE_VECTOR_SIZE |
1284 | }; | |
1285 | ||
1286 | ||
1287 | /* Box types of faces. */ | |
1288 | ||
1289 | enum face_box_type | |
1290 | { | |
1291 | /* No box around text. */ | |
1292 | FACE_NO_BOX, | |
1293 | ||
1294 | /* Simple box of specified width and color. Default width is 1, and | |
1295 | default color is the foreground color of the face. */ | |
1296 | FACE_SIMPLE_BOX, | |
1297 | ||
1298 | /* Boxes with 3D shadows. Color equals the background color of the | |
1299 | face. Width is specified. */ | |
1300 | FACE_RAISED_BOX, | |
1301 | FACE_SUNKEN_BOX | |
1302 | }; | |
1303 | ||
1304 | ||
1305 | /* Structure describing a realized face. | |
1306 | ||
1307 | For each Lisp face, 0..N realized faces can exist for different | |
1308 | frames and different charsets. Realized faces are built from Lisp | |
1309 | faces and text properties/overlays by merging faces and adding | |
1310 | unspecified attributes from the `default' face. */ | |
1311 | ||
9f2279ad | 1312 | struct face |
5f5c8ee5 GM |
1313 | { |
1314 | /* The id of this face. The id equals the index of this face in the | |
1315 | vector faces_by_id of its face cache. */ | |
1316 | int id; | |
1317 | ||
1318 | #ifdef HAVE_WINDOW_SYSTEM | |
177c0ea7 | 1319 | |
8016e514 EZ |
1320 | /* If non-zero, this is a GC that we can use without modification for |
1321 | drawing the characters in this face. */ | |
5f5c8ee5 | 1322 | GC gc; |
177c0ea7 | 1323 | |
5f5c8ee5 GM |
1324 | /* Font used for this face, or null if the font could not be loaded |
1325 | for some reason. This points to a `font' slot of a struct | |
1326 | font_info, and we should not call XFreeFont on it because the | |
1327 | font may still be used somewhere else. */ | |
1328 | XFontStruct *font; | |
1329 | ||
831fefca GM |
1330 | /* Background stipple or bitmap used for this face. This is |
1331 | an id as returned from load_pixmap. */ | |
1332 | int stipple; | |
5f5c8ee5 GM |
1333 | |
1334 | #else /* not HAVE_WINDOW_SYSTEM */ | |
1335 | ||
1336 | /* Dummy. */ | |
1337 | int stipple; | |
1338 | ||
1339 | #endif /* not HAVE_WINDOW_SYSTEM */ | |
1340 | ||
1341 | /* Pixel value of foreground color for X frames. Color index | |
1342 | for tty frames. */ | |
1343 | unsigned long foreground; | |
177c0ea7 | 1344 | |
5f5c8ee5 GM |
1345 | /* Pixel value or color index of background color. */ |
1346 | unsigned long background; | |
1347 | ||
1348 | /* Pixel value or color index of underline color. */ | |
1349 | unsigned long underline_color; | |
1350 | ||
1351 | /* Pixel value or color index of overlined, strike-through, or box | |
1352 | color. */ | |
1353 | unsigned long overline_color; | |
1354 | unsigned long strike_through_color; | |
1355 | unsigned long box_color; | |
1356 | ||
1357 | /* The font's name. This points to a `name' of a font_info, and it | |
1358 | must not be freed. */ | |
1359 | char *font_name; | |
1360 | ||
5f5c8ee5 GM |
1361 | /* Font info ID for this face's font. An ID is stored here because |
1362 | pointers to font_info structures may change. The reason is that | |
1363 | they are pointers into a font table vector that is itself | |
1364 | reallocated. */ | |
1365 | int font_info_id; | |
1366 | ||
1367 | /* Fontset ID if this face uses a fontset, or -1. This is only >= 0 | |
a90fbbf6 KH |
1368 | if the face was realized for a composition sequence. |
1369 | Otherwise, a specific font is loaded from the set of fonts | |
5f5c8ee5 GM |
1370 | specified by the fontset given by the family attribute of the face. */ |
1371 | int fontset; | |
177c0ea7 | 1372 | |
5f5c8ee5 GM |
1373 | /* Pixmap width and height. */ |
1374 | unsigned int pixmap_w, pixmap_h; | |
177c0ea7 | 1375 | |
5f5c8ee5 | 1376 | /* Non-zero means characters in this face have a box that thickness |
08f9976f KH |
1377 | around them. If it is negative, the absolute value indicates the |
1378 | thickness, and the horizontal lines of box (top and bottom) are | |
54bff0bd | 1379 | drawn inside of characters glyph area. The vertical lines of box |
08f9976f KH |
1380 | (left and right) are drawn as the same way as the case that this |
1381 | value is positive. */ | |
5f5c8ee5 GM |
1382 | int box_line_width; |
1383 | ||
1384 | /* Type of box drawn. A value of FACE_NO_BOX means no box is drawn | |
1385 | around text in this face. A value of FACE_SIMPLE_BOX means a box | |
1386 | of width box_line_width is drawn in color box_color. A value of | |
1387 | FACE_RAISED_BOX or FACE_SUNKEN_BOX means a 3D box is drawn with | |
1388 | shadow colors derived from the background color of the face. */ | |
1389 | enum face_box_type box; | |
1390 | ||
1391 | /* If `box' above specifies a 3D type, 1 means use box_color for | |
1392 | drawing shadows. */ | |
1393 | unsigned use_box_color_for_shadows_p : 1; | |
1394 | ||
1395 | /* The Lisp face attributes this face realizes. All attributes | |
1396 | in this vector are non-nil. */ | |
1397 | Lisp_Object lface[LFACE_VECTOR_SIZE]; | |
1398 | ||
1399 | /* The hash value of this face. */ | |
1400 | unsigned hash; | |
1401 | ||
1402 | /* The charset for which this face was realized if it was realized | |
a90fbbf6 KH |
1403 | for use in multibyte text. If fontset >= 0, this is the charset |
1404 | of the first character of the composition sequence. A value of | |
1405 | charset < 0 means the face was realized for use in unibyte text | |
1406 | where the idea of Emacs charsets isn't applicable. */ | |
5f5c8ee5 GM |
1407 | int charset; |
1408 | ||
1409 | /* Non-zero if text in this face should be underlined, overlined, | |
1410 | strike-through or have a box drawn around it. */ | |
1411 | unsigned underline_p : 1; | |
1412 | unsigned overline_p : 1; | |
1413 | unsigned strike_through_p : 1; | |
1414 | ||
1415 | /* 1 means that the colors specified for this face could not be | |
1416 | loaded, and were replaced by default colors, so they shouldn't be | |
1417 | freed. */ | |
1418 | unsigned foreground_defaulted_p : 1; | |
1419 | unsigned background_defaulted_p : 1; | |
1420 | ||
1421 | /* 1 means that either no color is specified for underlining or that | |
28b927d8 | 1422 | the specified color couldn't be loaded. Use the foreground |
5f5c8ee5 | 1423 | color when drawing in that case. */ |
177c0ea7 | 1424 | unsigned underline_defaulted_p : 1; |
5f5c8ee5 GM |
1425 | |
1426 | /* 1 means that either no color is specified for the corresponding | |
54bff0bd | 1427 | attribute or that the specified color couldn't be loaded. |
5f5c8ee5 GM |
1428 | Use the foreground color when drawing in that case. */ |
1429 | unsigned overline_color_defaulted_p : 1; | |
1430 | unsigned strike_through_color_defaulted_p : 1; | |
1431 | unsigned box_color_defaulted_p : 1; | |
1432 | ||
1433 | /* TTY appearances. Blinking is not yet implemented. Colors are | |
1434 | found in `lface' with empty color string meaning the default | |
1435 | color of the TTY. */ | |
1436 | unsigned tty_bold_p : 1; | |
1437 | unsigned tty_dim_p : 1; | |
1438 | unsigned tty_underline_p : 1; | |
1439 | unsigned tty_alt_charset_p : 1; | |
1440 | unsigned tty_reverse_p : 1; | |
1441 | unsigned tty_blinking_p : 1; | |
1442 | ||
dd387b25 GM |
1443 | /* 1 means that colors of this face may not be freed because they |
1444 | have been copied bitwise from a base face (see | |
1445 | realize_x_face). */ | |
1446 | unsigned colors_copied_bitwise_p : 1; | |
1447 | ||
11894ceb MB |
1448 | /* If non-zero, use overstrike (to simulate bold-face). */ |
1449 | unsigned overstrike : 1; | |
1450 | ||
5f5c8ee5 GM |
1451 | /* Next and previous face in hash collision list of face cache. */ |
1452 | struct face *next, *prev; | |
b3091a23 KH |
1453 | |
1454 | /* If this face is for ASCII characters, this points this face | |
1455 | itself. Otherwise, this points a face for ASCII characters. */ | |
1456 | struct face *ascii_face; | |
5f5c8ee5 GM |
1457 | }; |
1458 | ||
1459 | ||
1460 | /* Color index indicating that face uses a terminal's default color. */ | |
1461 | ||
1462 | #define FACE_TTY_DEFAULT_COLOR ((unsigned long) -1) | |
1463 | ||
f9d2fdc4 EZ |
1464 | /* Color index indicating that face uses an unknown foreground color. */ |
1465 | ||
1466 | #define FACE_TTY_DEFAULT_FG_COLOR ((unsigned long) -2) | |
1467 | ||
54bff0bd | 1468 | /* Color index indicating that face uses an unknown background color. */ |
f9d2fdc4 EZ |
1469 | |
1470 | #define FACE_TTY_DEFAULT_BG_COLOR ((unsigned long) -3) | |
1471 | ||
5f5c8ee5 GM |
1472 | /* Non-zero if FACE was realized for unibyte use. */ |
1473 | ||
1474 | #define FACE_UNIBYTE_P(FACE) ((FACE)->charset < 0) | |
1475 | ||
1476 | ||
1477 | /* IDs of important faces known by the C face code. These are the IDs | |
1478 | of the faces for CHARSET_ASCII. */ | |
1479 | ||
1480 | enum face_id | |
1481 | { | |
1482 | DEFAULT_FACE_ID, | |
1483 | MODE_LINE_FACE_ID, | |
f6911ea7 | 1484 | MODE_LINE_INACTIVE_FACE_ID, |
9ea173e8 | 1485 | TOOL_BAR_FACE_ID, |
afb7aabb | 1486 | FRINGE_FACE_ID, |
045dee35 | 1487 | HEADER_LINE_FACE_ID, |
76a6bc49 GM |
1488 | SCROLL_BAR_FACE_ID, |
1489 | BORDER_FACE_ID, | |
1490 | CURSOR_FACE_ID, | |
1491 | MOUSE_FACE_ID, | |
8317e104 | 1492 | MENU_FACE_ID, |
5f5c8ee5 GM |
1493 | BASIC_FACE_ID_SENTINEL |
1494 | }; | |
1495 | ||
1496 | ||
1497 | /* A cache of realized faces. Each frame has its own cache because | |
1498 | Emacs allows different frame-local face definitions. */ | |
1499 | ||
1500 | struct face_cache | |
1501 | { | |
1502 | /* Hash table of cached realized faces. */ | |
1503 | struct face **buckets; | |
177c0ea7 | 1504 | |
5f5c8ee5 GM |
1505 | /* Back-pointer to the frame this cache belongs to. */ |
1506 | struct frame *f; | |
1507 | ||
1508 | /* A vector of faces so that faces can be referenced by an ID. */ | |
1509 | struct face **faces_by_id; | |
1510 | ||
1511 | /* The allocated size, and number of used slots of faces_by_id. */ | |
1512 | int size, used; | |
90893c55 GM |
1513 | |
1514 | /* Flag indicating that attributes of the `menu' face have been | |
1515 | changed. */ | |
1516 | unsigned menu_face_changed_p : 1; | |
5f5c8ee5 GM |
1517 | }; |
1518 | ||
1519 | ||
1520 | /* Prepare face FACE for use on frame F. This must be called before | |
1521 | using X resources of FACE. */ | |
1522 | ||
1523 | #define PREPARE_FACE_FOR_DISPLAY(F, FACE) \ | |
1524 | if ((FACE)->gc == 0) \ | |
1525 | prepare_face_for_display ((F), (FACE)); \ | |
1526 | else \ | |
1527 | (void) 0 | |
1528 | ||
1529 | /* Return a pointer to the face with ID on frame F, or null if such a | |
1530 | face doesn't exist. */ | |
1531 | ||
1532 | #define FACE_FROM_ID(F, ID) \ | |
c388b3c2 | 1533 | (((unsigned) (ID) < FRAME_FACE_CACHE (F)->used) \ |
5f5c8ee5 GM |
1534 | ? FRAME_FACE_CACHE (F)->faces_by_id[ID] \ |
1535 | : NULL) | |
1536 | ||
ff1a0d8e KH |
1537 | #ifdef HAVE_WINDOW_SYSTEM |
1538 | ||
b3091a23 KH |
1539 | /* Non-zero if FACE is suitable for displaying character CHAR. */ |
1540 | ||
1541 | #define FACE_SUITABLE_FOR_CHAR_P(FACE, CHAR) \ | |
1542 | (SINGLE_BYTE_CHAR_P (CHAR) \ | |
1543 | ? (FACE) == (FACE)->ascii_face \ | |
1544 | : face_suitable_for_char_p ((FACE), (CHAR))) | |
1545 | ||
5f5c8ee5 | 1546 | /* Return the id of the realized face on frame F that is like the face |
b3091a23 KH |
1547 | with id ID but is suitable for displaying character CHAR. |
1548 | This macro is only meaningful for multibyte character CHAR. */ | |
177c0ea7 | 1549 | |
b3091a23 KH |
1550 | #define FACE_FOR_CHAR(F, FACE, CHAR) \ |
1551 | (SINGLE_BYTE_CHAR_P (CHAR) \ | |
1552 | ? (FACE)->ascii_face->id \ | |
1553 | : face_for_char ((F), (FACE), (CHAR))) | |
5f5c8ee5 | 1554 | |
ff1a0d8e | 1555 | #else /* not HAVE_WINDOW_SYSTEM */ |
5f5c8ee5 | 1556 | |
ff1a0d8e KH |
1557 | #define FACE_SUITABLE_FOR_CHAR_P(FACE, CHAR) 1 |
1558 | #define FACE_FOR_CHAR(F, FACE, CHAR) ((FACE)->id) | |
1559 | ||
1560 | #endif /* not HAVE_WINDOW_SYSTEM */ | |
5f5c8ee5 GM |
1561 | |
1562 | /* Non-zero means face attributes have been changed since the last | |
1563 | redisplay. Used in redisplay_internal. */ | |
1564 | ||
1565 | extern int face_change_count; | |
1566 | ||
1567 | ||
1568 | ||
1569 | \f | |
f4e1400d KS |
1570 | /*********************************************************************** |
1571 | Fringes | |
1572 | ***********************************************************************/ | |
1573 | ||
1574 | enum fringe_bitmap_type | |
1575 | { | |
1576 | NO_FRINGE_BITMAP = 0, | |
1577 | LEFT_TRUNCATION_BITMAP, | |
1578 | RIGHT_TRUNCATION_BITMAP, | |
1579 | CONTINUED_LINE_BITMAP, | |
1580 | CONTINUATION_LINE_BITMAP, | |
1581 | OVERLAY_ARROW_BITMAP, | |
1582 | ZV_LINE_BITMAP, | |
1583 | MAX_FRINGE_BITMAPS | |
1584 | }; | |
1585 | ||
1586 | struct fringe_bitmap | |
1587 | { | |
1588 | int width; | |
1589 | int height; | |
1590 | int period; | |
1591 | unsigned char *bits; | |
1592 | }; | |
1593 | ||
1594 | /* Structure used to describe where and how to draw a fringe bitmap. | |
1595 | WHICH is the fringe bitmap to draw. WD and H is the (adjusted) | |
1596 | width and height of the bitmap, DH is the height adjustment (if | |
1597 | bitmap is periodic). X and Y are frame coordinates of the area to | |
1598 | display the bitmap, DY is relative offset of the bitmap into that | |
1599 | area. BX, NX, BY, NY specifies the area to clear if the bitmap | |
1600 | does not fill the entire area. FACE is the fringe face. */ | |
1601 | ||
1602 | struct draw_fringe_bitmap_params | |
1603 | { | |
1604 | enum fringe_bitmap_type which; | |
1605 | int wd, h, dh; | |
1606 | int x, y; | |
1607 | int bx, nx, by, ny; | |
1608 | struct face *face; | |
1609 | }; | |
1610 | ||
1611 | extern struct fringe_bitmap fringe_bitmaps[MAX_FRINGE_BITMAPS]; | |
1612 | ||
1613 | \f | |
5f5c8ee5 GM |
1614 | /*********************************************************************** |
1615 | Display Iterator | |
1616 | ***********************************************************************/ | |
1617 | ||
1618 | /* Iteration over things to display in current_buffer or in a string. | |
1619 | ||
1620 | The iterator handles: | |
1621 | ||
1622 | 1. Overlay strings (after-string, before-string). | |
1623 | 2. Face properties. | |
1624 | 3. Invisible text properties. | |
1625 | 4. Selective display. | |
1626 | 5. Translation of characters via display tables. | |
1627 | 6. Translation of control characters to the forms `\003' or `^C'. | |
1628 | 7. `glyph' and `space-width' properties. | |
1629 | ||
1630 | Iterators are initialized by calling init_iterator or one of the | |
1631 | equivalent functions below. A call to get_next_display_element | |
1632 | loads the iterator structure with information about what next to | |
1633 | display. A call to set_iterator_to_next increments the iterator's | |
1634 | position. | |
1635 | ||
1636 | Characters from overlay strings, display table entries or control | |
1637 | character translations are returned one at a time. For example, if | |
1638 | we have a text of `a\x01' where `a' has a display table definition | |
1639 | of `cd' and the control character is displayed with a leading | |
1640 | arrow, then the iterator will return: | |
1641 | ||
1642 | Call Return Source Call next | |
1643 | ----------------------------------------------------------------- | |
1644 | next c display table move | |
1645 | next d display table move | |
1646 | next ^ control char move | |
1647 | next A control char move | |
1648 | ||
1649 | The same mechanism is also used to return characters for ellipses | |
1650 | displayed at the end of invisible text. | |
1651 | ||
1652 | CAVEAT: Under some circumstances, move_.* functions can be called | |
1653 | asynchronously, e.g. when computing a buffer position from an x and | |
1654 | y pixel position. This means that these functions and functions | |
1655 | called from them SHOULD NOT USE xmalloc and alike. See also the | |
1656 | comment at the start of xdisp.c. */ | |
1657 | ||
1658 | /* Enumeration describing what kind of display element an iterator is | |
1659 | loaded with after a call to get_next_display_element. */ | |
1660 | ||
1661 | enum display_element_type | |
1662 | { | |
1663 | /* A normal character. */ | |
1664 | IT_CHARACTER, | |
1665 | ||
a90fbbf6 KH |
1666 | /* A composition sequence. */ |
1667 | IT_COMPOSITION, | |
1668 | ||
5f5c8ee5 GM |
1669 | /* An image. */ |
1670 | IT_IMAGE, | |
1671 | ||
1672 | /* A flexible width and height space. */ | |
1673 | IT_STRETCH, | |
1674 | ||
1675 | /* End of buffer or string. */ | |
1676 | IT_EOB, | |
1677 | ||
1678 | /* Truncation glyphs. Never returned by get_next_display_element. | |
1679 | Used to get display information about truncation glyphs via | |
1680 | produce_glyphs. */ | |
1681 | IT_TRUNCATION, | |
1682 | ||
1683 | /* Continuation glyphs. See the comment for IT_TRUNCATION. */ | |
1684 | IT_CONTINUATION | |
1685 | }; | |
1686 | ||
1687 | ||
1688 | /* An enumerator for each text property that has a meaning for display | |
1689 | purposes. */ | |
1690 | ||
1691 | enum prop_idx | |
1692 | { | |
1693 | FONTIFIED_PROP_IDX, | |
1694 | FACE_PROP_IDX, | |
1695 | INVISIBLE_PROP_IDX, | |
1696 | DISPLAY_PROP_IDX, | |
a90fbbf6 | 1697 | COMPOSITION_PROP_IDX, |
5f5c8ee5 GM |
1698 | |
1699 | /* Not a property. Used to indicate changes in overlays. */ | |
1700 | OVERLAY_PROP_IDX, | |
1701 | ||
1702 | /* Sentinel. */ | |
1703 | LAST_PROP_IDX | |
1704 | }; | |
1705 | ||
1706 | ||
1707 | struct it | |
1708 | { | |
1709 | /* The window in which we iterate over current_buffer (or a string). */ | |
1710 | Lisp_Object window; | |
1711 | struct window *w; | |
1712 | ||
1713 | /* The window's frame. */ | |
1714 | struct frame *f; | |
1715 | ||
1716 | /* Function to call to load this structure with the next display | |
1717 | element. */ | |
1718 | int (* method) P_ ((struct it *it)); | |
1719 | ||
1720 | /* The next position at which to check for face changes, invisible | |
1721 | text, overlay strings, end of text etc., which see. */ | |
1722 | int stop_charpos; | |
1723 | ||
1724 | /* Maximum string or buffer position + 1. ZV when iterating over | |
1725 | current_buffer. */ | |
1726 | int end_charpos; | |
1727 | ||
1728 | /* C string to iterate over. Non-null means get characters from | |
1729 | this string, otherwise characters are read from current_buffer | |
1730 | or it->string. */ | |
1731 | unsigned char *s; | |
1732 | ||
1733 | /* Number of characters in the string (s, or it->string) we iterate | |
1734 | over. */ | |
1735 | int string_nchars; | |
1736 | ||
1737 | /* Start and end of a visible region; -1 if the region is not | |
1738 | visible in the window. */ | |
1739 | int region_beg_charpos, region_end_charpos; | |
1740 | ||
1741 | /* Position at which redisplay end trigger functions should be run. */ | |
1742 | int redisplay_end_trigger_charpos; | |
1743 | ||
1744 | /* 1 means multibyte characters are enabled. */ | |
1745 | unsigned multibyte_p : 1; | |
1746 | ||
5f5c8ee5 | 1747 | /* 1 means window has a mode line at its top. */ |
045dee35 | 1748 | unsigned header_line_p : 1; |
5f5c8ee5 GM |
1749 | |
1750 | /* 1 means `string' is the value of a `display' property. | |
1751 | Don't handle some `display' properties in these strings. */ | |
1752 | unsigned string_from_display_prop_p : 1; | |
1753 | ||
1754 | /* Display table in effect or null for none. */ | |
1755 | struct Lisp_Char_Table *dp; | |
1756 | ||
1757 | /* Current display table vector to return characters from and its | |
1758 | end. dpvec null means we are not returning characters from a | |
1759 | display table entry; current.dpvec_index gives the current index | |
1760 | into dpvec. This same mechanism is also used to return | |
1761 | characters from translated control characters, i.e. `\003' or | |
1762 | `^C'. */ | |
1763 | Lisp_Object *dpvec, *dpend; | |
1764 | ||
1765 | /* Length in bytes of the char that filled dpvec. A value of zero | |
54bff0bd | 1766 | means that no such character is involved. */ |
5f5c8ee5 GM |
1767 | int dpvec_char_len; |
1768 | ||
1769 | /* Face id of the iterator saved in case a glyph from dpvec contains | |
1770 | a face. The face is restored when all glyphs from dpvec have | |
1771 | been delivered. */ | |
1772 | int saved_face_id; | |
1773 | ||
1774 | /* Vector of glyphs for control character translation. The pointer | |
4659838f KH |
1775 | dpvec is set to ctl_chars when a control character is translated. |
1776 | This vector is also used for incomplete multibyte character | |
8d5b986d GM |
1777 | translation (e.g \222\244). Such a character is at most 4 bytes, |
1778 | thus we need at most 16 bytes here. */ | |
1779 | Lisp_Object ctl_chars[16]; | |
5f5c8ee5 GM |
1780 | |
1781 | /* Current buffer or string position of the iterator, including | |
1782 | position in overlay strings etc. */ | |
1783 | struct display_pos current; | |
1784 | ||
1785 | /* Vector of overlays to process. Overlay strings are processed | |
1786 | OVERLAY_STRING_CHUNK_SIZE at a time. */ | |
1787 | #define OVERLAY_STRING_CHUNK_SIZE 3 | |
1788 | Lisp_Object overlay_strings[OVERLAY_STRING_CHUNK_SIZE]; | |
1789 | ||
1790 | /* Total number of overlay strings to process. This can be > | |
1791 | OVERLAY_STRING_CHUNK_SIZE. */ | |
1792 | int n_overlay_strings; | |
1793 | ||
1794 | /* If non-nil, a Lisp string being processed. If | |
1795 | current.overlay_string_index >= 0, this is an overlay string from | |
1796 | pos. */ | |
1797 | Lisp_Object string; | |
1798 | ||
1799 | /* Stack of saved values. New entries are pushed when we begin to | |
1800 | process an overlay string or a string from a `glyph' property. | |
1801 | Entries are popped when we return to deliver display elements | |
1802 | from what we previously had. */ | |
1803 | struct iterator_stack_entry | |
9f2279ad | 1804 | { |
5f5c8ee5 GM |
1805 | int stop_charpos; |
1806 | int face_id; | |
1807 | Lisp_Object string; | |
1808 | struct display_pos pos; | |
1809 | int end_charpos; | |
1810 | int string_nchars; | |
1811 | enum glyph_row_area area; | |
1812 | unsigned multibyte_p : 1; | |
1813 | unsigned string_from_display_prop_p : 1; | |
88378b0d | 1814 | unsigned display_ellipsis_p : 1; |
5f5c8ee5 GM |
1815 | Lisp_Object space_width; |
1816 | short voffset; | |
1817 | Lisp_Object font_height; | |
1818 | } | |
1819 | stack[2]; | |
dfbb1e90 | 1820 | |
5f5c8ee5 GM |
1821 | /* Stack pointer. */ |
1822 | int sp; | |
177c0ea7 | 1823 | |
5f5c8ee5 GM |
1824 | /* Setting of buffer-local variable selective-display-ellipsis. */ |
1825 | unsigned selective_display_ellipsis_p : 1; | |
1826 | ||
1827 | /* 1 means control characters are translated into the form `^C' | |
1828 | where the `^' can be replaced by a display table entry. */ | |
1829 | unsigned ctl_arrow_p : 1; | |
1830 | ||
1831 | /* -1 means selective display hides everything between a \r and the | |
1832 | next newline; > 0 means hide lines indented more than that value. */ | |
1833 | int selective; | |
1834 | ||
1835 | /* An enumeration describing what the next display element is | |
1836 | after a call to get_next_display_element. */ | |
1837 | enum display_element_type what; | |
dfbb1e90 | 1838 | |
5f5c8ee5 GM |
1839 | /* Face to use. */ |
1840 | int face_id; | |
1841 | ||
1842 | /* Non-zero means that the current face has a box. */ | |
1843 | unsigned face_box_p : 1; | |
1844 | ||
1845 | /* Non-null means that the current character is the first in a run | |
1846 | of characters with box face. */ | |
1847 | unsigned start_of_box_run_p : 1; | |
177c0ea7 | 1848 | |
5f5c8ee5 GM |
1849 | /* Non-zero means that the current character is the last in a run |
1850 | of characters with box face. */ | |
1851 | unsigned end_of_box_run_p : 1; | |
1852 | ||
1853 | /* 1 means overlay strings at end_charpos have been processed. */ | |
1854 | unsigned overlay_strings_at_end_processed_p : 1; | |
1855 | ||
b3091a23 KH |
1856 | /* 1 means the actual glyph is not available in the current |
1857 | system. */ | |
666852af GM |
1858 | unsigned glyph_not_available_p : 1; |
1859 | ||
1860 | /* 1 means the next line in display_line continues a character | |
1861 | consisting of more than one glyph, and some glyphs of this | |
1862 | character have been put on the previous line. */ | |
1863 | unsigned starts_in_middle_of_char_p : 1; | |
b3091a23 | 1864 | |
4d2036e4 GM |
1865 | /* If 1, saved_face_id contains the id of the face in front of text |
1866 | skipped due to selective display. */ | |
1867 | unsigned face_before_selective_p : 1; | |
1868 | ||
5f5c8ee5 | 1869 | /* The ID of the default face to use. One of DEFAULT_FACE_ID, |
4d2036e4 | 1870 | MODE_LINE_FACE_ID, etc, depending on what we are displaying. */ |
5f5c8ee5 GM |
1871 | int base_face_id; |
1872 | ||
1873 | /* If what == IT_CHARACTER, character and length in bytes. This is | |
1874 | a character from a buffer or string. It may be different from | |
1875 | the character displayed in case that | |
a90fbbf6 KH |
1876 | unibyte_display_via_language_environment is set. |
1877 | ||
1878 | If what == IT_COMPOSITION, the first component of a composition | |
1879 | and length in bytes of the composition. */ | |
5f5c8ee5 GM |
1880 | int c, len; |
1881 | ||
a90fbbf6 KH |
1882 | /* If what == IT_COMPOSITION, identification number and length in |
1883 | chars of a composition. */ | |
1884 | int cmp_id, cmp_len; | |
1885 | ||
5f5c8ee5 GM |
1886 | /* The character to display, possibly translated to multibyte |
1887 | if unibyte_display_via_language_environment is set. This | |
d5cc60b8 | 1888 | is set after produce_glyphs has been called. */ |
5f5c8ee5 GM |
1889 | int char_to_display; |
1890 | ||
5f5c8ee5 GM |
1891 | /* If what == IT_IMAGE, the id of the image to display. */ |
1892 | int image_id; | |
1893 | ||
1894 | /* Value of the `space-width' property, if any; nil if none. */ | |
1895 | Lisp_Object space_width; | |
1896 | ||
1897 | /* Computed from the value of the `raise' property. */ | |
1898 | short voffset; | |
1899 | ||
1900 | /* Value of the `height' property, if any; nil if none. */ | |
1901 | Lisp_Object font_height; | |
1902 | ||
1903 | /* Object and position where the current display element came from. | |
1904 | Object can be a Lisp string in case the current display element | |
1905 | comes from an overlay string, or it is buffer. Position is | |
1906 | a position in object. */ | |
1907 | Lisp_Object object; | |
1908 | struct text_pos position; | |
1909 | ||
1910 | /* 1 means lines are truncated. */ | |
1911 | unsigned truncate_lines_p : 1; | |
1912 | ||
1913 | /* Number of columns per \t. */ | |
1914 | short tab_width; | |
1915 | ||
1916 | /* Width in pixels of truncation and continuation glyphs. */ | |
1917 | short truncation_pixel_width, continuation_pixel_width; | |
1918 | ||
1919 | /* First and last visible x-position in the display area. If window | |
87388f9d | 1920 | is hscrolled by n columns, first_visible_x == n * FRAME_COLUMN_WIDTH |
5f5c8ee5 GM |
1921 | (f), and last_visible_x == pixel width of W + first_visible_x. */ |
1922 | int first_visible_x, last_visible_x; | |
1923 | ||
1924 | /* Last visible y-position + 1 in the display area without a mode | |
1925 | line, if the window has one. */ | |
1926 | int last_visible_y; | |
1927 | ||
bf95c413 | 1928 | /* Additional space in pixels between lines (for window systems |
54bff0bd | 1929 | only.) */ |
bf95c413 | 1930 | int extra_line_spacing; |
5f5c8ee5 GM |
1931 | |
1932 | /* If non-null, glyphs are produced in glyph_row with each call to | |
1933 | produce_glyphs. */ | |
1934 | struct glyph_row *glyph_row; | |
1935 | ||
1936 | /* The area of glyph_row to which glyphs are added. */ | |
1937 | enum glyph_row_area area; | |
1938 | ||
1939 | /* Number of glyphs needed for the last character requested via | |
1940 | produce_glyphs. This is 1 except for tabs. */ | |
1941 | int nglyphs; | |
177c0ea7 | 1942 | |
5f5c8ee5 GM |
1943 | /* Width of the display element in pixels. Result of |
1944 | produce_glyphs. */ | |
1945 | int pixel_width; | |
1946 | ||
2febf6e0 GM |
1947 | /* Current, maximum logical, and maximum physical line height |
1948 | information. Result of produce_glyphs. */ | |
5f5c8ee5 | 1949 | int ascent, descent, max_ascent, max_descent; |
2febf6e0 | 1950 | int phys_ascent, phys_descent, max_phys_ascent, max_phys_descent; |
5f5c8ee5 GM |
1951 | |
1952 | /* Current x pixel position within the display line. This value | |
1953 | does not include the width of continuation lines in front of the | |
1954 | line. The value of current_x is automatically incremented by | |
1955 | pixel_width with each call to produce_glyphs. */ | |
1956 | int current_x; | |
1957 | ||
1958 | /* Accumulated width of continuation lines. If > 0, this means we | |
1959 | are currently in a continuation line. This is initially zero and | |
1960 | incremented/reset by display_line, move_it_to etc. */ | |
1961 | int continuation_lines_width; | |
1962 | ||
1963 | /* Current y-position. Automatically incremented by the height of | |
1964 | glyph_row in move_it_to and display_line. */ | |
1965 | int current_y; | |
1966 | ||
1967 | /* Current vertical matrix position, or line number. Automatically | |
1968 | incremented by move_it_to and display_line. */ | |
1969 | int vpos; | |
1970 | ||
1971 | /* Horizontal matrix position reached in move_it_in_display_line. | |
1972 | Only set there, not in display_line. */ | |
1973 | int hpos; | |
1974 | }; | |
1975 | ||
1976 | ||
1977 | /* Access to positions of iterator IT. */ | |
1978 | ||
1979 | #define IT_CHARPOS(IT) CHARPOS ((IT).current.pos) | |
1980 | #define IT_BYTEPOS(IT) BYTEPOS ((IT).current.pos) | |
1981 | #define IT_STRING_CHARPOS(IT) CHARPOS ((IT).current.string_pos) | |
1982 | #define IT_STRING_BYTEPOS(IT) BYTEPOS ((IT).current.string_pos) | |
1983 | ||
1984 | /* Test if IT has reached the end of its buffer or string. This will | |
1985 | only work after get_next_display_element has been called. */ | |
1986 | ||
1987 | #define ITERATOR_AT_END_P(IT) ((IT)->what == IT_EOB) | |
1988 | ||
1989 | /* Non-zero means IT is at the end of a line. This is the case if it | |
1990 | is either on a newline or on a carriage return and selective | |
1991 | display hides the rest of the line. */ | |
1992 | ||
1993 | #define ITERATOR_AT_END_OF_LINE_P(IT) \ | |
1994 | ((IT)->what == IT_CHARACTER \ | |
1995 | && ((IT)->c == '\n' \ | |
1996 | || ((IT)->c == '\r' && (IT)->selective))) | |
1997 | ||
1998 | /* Call produce_glyphs or produce_glyphs_hook, if set. Shortcut to | |
1999 | avoid the function call overhead. */ | |
2000 | ||
18155a1d RS |
2001 | #define PRODUCE_GLYPHS(IT) \ |
2002 | do { \ | |
2003 | extern int inhibit_free_realized_faces; \ | |
2004 | if (rif != NULL) \ | |
2005 | rif->produce_glyphs ((IT)); \ | |
2006 | else \ | |
2007 | produce_glyphs ((IT)); \ | |
2008 | if ((IT)->glyph_row != NULL) \ | |
2009 | inhibit_free_realized_faces = 1; \ | |
2010 | } while (0) | |
5f5c8ee5 GM |
2011 | |
2012 | /* Bit-flags indicating what operation move_it_to should perform. */ | |
2013 | ||
2014 | enum move_operation_enum | |
2015 | { | |
2016 | /* Stop if specified x-position is reached. */ | |
2017 | MOVE_TO_X = 0x01, | |
2018 | ||
2019 | /* Stop if specified y-position is reached. */ | |
2020 | MOVE_TO_Y = 0x02, | |
2021 | ||
2022 | /* Stop if specified vpos is reached. */ | |
2023 | MOVE_TO_VPOS = 0x04, | |
2024 | ||
2025 | /* Stop if specified buffer or string position is reached. */ | |
2026 | MOVE_TO_POS = 0x08 | |
2027 | }; | |
2028 | ||
2029 | ||
2030 | \f | |
2031 | /*********************************************************************** | |
2032 | Window-based redisplay interface | |
2033 | ***********************************************************************/ | |
2034 | ||
2035 | /* Structure used to describe runs of lines that must be scrolled. */ | |
2036 | ||
2037 | struct run | |
2038 | { | |
2039 | /* Source and destination y pixel position. */ | |
2040 | int desired_y, current_y; | |
2041 | ||
2042 | /* Source and destination vpos in matrix. */ | |
2043 | int desired_vpos, current_vpos; | |
2044 | ||
2045 | /* Height in pixels, number of glyph rows. */ | |
2046 | int height, nrows; | |
2047 | }; | |
2048 | ||
2049 | ||
e6b3aecd KS |
2050 | /* Handlers for setting frame parameters. */ |
2051 | ||
2052 | typedef void (*frame_parm_handler) P_ ((struct frame *, Lisp_Object, Lisp_Object)); | |
2053 | ||
2054 | ||
5f5c8ee5 GM |
2055 | /* Structure holding system-dependent interface functions needed |
2056 | for window-based redisplay. */ | |
2057 | ||
2058 | struct redisplay_interface | |
2059 | { | |
e6b3aecd KS |
2060 | /* Handlers for setting frame parameters. */ |
2061 | frame_parm_handler *frame_parm_handlers; | |
2062 | ||
5f5c8ee5 GM |
2063 | /* Produce glyphs/get display metrics for the display element IT is |
2064 | loaded with. */ | |
2065 | void (*produce_glyphs) P_ ((struct it *it)); | |
177c0ea7 | 2066 | |
5f5c8ee5 GM |
2067 | /* Write or insert LEN glyphs from STRING at the nominal output |
2068 | position. */ | |
2069 | void (*write_glyphs) P_ ((struct glyph *string, int len)); | |
2070 | void (*insert_glyphs) P_ ((struct glyph *start, int len)); | |
2071 | ||
2072 | /* Clear from nominal output position to X. X < 0 means clear | |
2073 | to right end of display. */ | |
2074 | void (*clear_end_of_line) P_ ((int x)); | |
177c0ea7 | 2075 | |
5f5c8ee5 GM |
2076 | /* Function to call to scroll the display as described by RUN on |
2077 | window W. */ | |
2078 | void (*scroll_run_hook) P_ ((struct window *w, struct run *run)); | |
2079 | ||
2080 | /* Function to call after a line in a display has been completely | |
2081 | updated. Used to draw truncation marks and alike. DESIRED_ROW | |
2082 | is the desired row which has been updated. */ | |
2083 | void (*after_update_window_line_hook) P_ ((struct glyph_row *desired_row)); | |
42087301 | 2084 | |
5f5c8ee5 GM |
2085 | /* Function to call before beginning to update window W in |
2086 | window-based redisplay. */ | |
2087 | void (*update_window_begin_hook) P_ ((struct window *w)); | |
2088 | ||
2089 | /* Function to call after window W has been updated in window-based | |
712eaef2 GM |
2090 | redisplay. CURSOR_ON_P non-zero means switch cursor on. |
2091 | MOUSE_FACE_OVERWRITTEN_P non-zero means that some lines in W | |
2092 | that contained glyphs in mouse-face were overwritten, so we | |
54bff0bd | 2093 | have to update the mouse highlight. */ |
712eaef2 GM |
2094 | void (*update_window_end_hook) P_ ((struct window *w, int cursor_on_p, |
2095 | int mouse_face_overwritten_p)); | |
177c0ea7 | 2096 | |
5f5c8ee5 GM |
2097 | /* Move cursor to row/column position VPOS/HPOS, pixel coordinates |
2098 | Y/X. HPOS/VPOS are window-relative row and column numbers and X/Y | |
2099 | are window-relative pixel positions. */ | |
2100 | void (*cursor_to) P_ ((int vpos, int hpos, int y, int x)); | |
2101 | ||
2102 | /* Flush the display of frame F. For X, this is XFlush. */ | |
2103 | void (*flush_display) P_ ((struct frame *f)); | |
2104 | ||
d74b2553 KS |
2105 | /* Flush the display of frame F if non-NULL. This is called |
2106 | during redisplay, and should be NULL on systems which flushes | |
2107 | automatically before reading input. */ | |
2108 | void (*flush_display_optional) P_ ((struct frame *f)); | |
2109 | ||
ec68e323 | 2110 | /* Clear the mouse hightlight in window W, if there is any. */ |
d74b2553 | 2111 | void (*clear_window_mouse_face) P_ ((struct window *w)); |
712eaef2 | 2112 | |
5f5c8ee5 GM |
2113 | /* Set *LEFT and *RIGHT to the left and right overhang of GLYPH on |
2114 | frame F. */ | |
2115 | void (*get_glyph_overhangs) P_ ((struct glyph *glyph, struct frame *f, | |
2116 | int *left, int *right)); | |
2febf6e0 GM |
2117 | |
2118 | /* Fix the display of AREA of ROW in window W for overlapping rows. | |
2119 | This function is called from redraw_overlapping_rows after | |
2120 | desired rows have been made current. */ | |
2121 | void (*fix_overlapping_area) P_ ((struct window *w, struct glyph_row *row, | |
2122 | enum glyph_row_area area)); | |
f4e1400d | 2123 | |
79fa9e0f KS |
2124 | #ifdef HAVE_WINDOW_SYSTEM |
2125 | ||
f4e1400d KS |
2126 | /* Draw a fringe bitmap in window W of row ROW using parameters P. */ |
2127 | void (*draw_fringe_bitmap) P_ ((struct window *w, struct glyph_row *row, | |
2128 | struct draw_fringe_bitmap_params *p)); | |
2129 | ||
d5cc60b8 KS |
2130 | /* Get metrics of character CHAR2B in FONT of type FONT_TYPE. |
2131 | Value is null if CHAR2B is not contained in the font. */ | |
2132 | XCharStruct * (*per_char_metric) P_ ((XFontStruct *font, XChar2b *char2b, | |
2133 | int font_type)); | |
2134 | ||
2135 | /* Encode CHAR2B using encoding information from FONT_INFO. CHAR2B is | |
2136 | the two-byte form of C. Encoding is returned in *CHAR2B. If | |
2137 | TWO_BYTE_P is non-null, return non-zero there if font is two-byte. */ | |
2138 | int (*encode_char) P_ ((int c, XChar2b *char2b, | |
2139 | struct font_info *font_into, int *two_byte_p)); | |
2140 | ||
2141 | /* Compute left and right overhang of glyph string S. | |
2142 | A NULL pointer if platform does not support this. */ | |
2143 | void (*compute_glyph_string_overhangs) P_ ((struct glyph_string *s)); | |
2144 | ||
2145 | /* Draw a glyph string S. */ | |
2146 | void (*draw_glyph_string) P_ ((struct glyph_string *s)); | |
2147 | ||
d74b2553 KS |
2148 | /* Define cursor CURSOR on frame F. */ |
2149 | void (*define_frame_cursor) P_ ((struct frame *f, Cursor cursor)); | |
5f5c8ee5 | 2150 | |
d74b2553 KS |
2151 | /* Clear the area at (X,Y,WIDTH,HEIGHT) of frame F. */ |
2152 | void (*clear_frame_area) P_ ((struct frame *f, int x, int y, | |
2153 | int width, int height)); | |
5f5c8ee5 | 2154 | |
e5a3b7d9 KS |
2155 | /* Draw specified cursor CURSOR_TYPE of width CURSOR_WIDTH |
2156 | at row GLYPH_ROW on window W if ON_P is 1. If ON_P is | |
2157 | 0, don't draw cursor. If ACTIVE_P is 1, system caret | |
2158 | should track this cursor (when applicable). */ | |
d74b2553 KS |
2159 | void (*draw_window_cursor) P_ ((struct window *w, |
2160 | struct glyph_row *glyph_row, | |
e5a3b7d9 KS |
2161 | int x, int y, |
2162 | int cursor_type, int cursor_width, | |
2163 | int on_p, int active_p)); | |
5f5c8ee5 | 2164 | |
d74b2553 KS |
2165 | /* Draw vertical border for window W from (X,Y0) to (X,Y1). */ |
2166 | void (*draw_vertical_window_border) P_ ((struct window *w, | |
2167 | int x, int y0, int y1)); | |
d5cc60b8 | 2168 | |
d74b2553 KS |
2169 | /* Shift display of frame F to make room for inserted glyphs. |
2170 | The area at pixel (X,Y) of width WIDTH and height HEIGHT is | |
2171 | shifted right by SHIFT_BY pixels. */ | |
2172 | void (*shift_glyphs_for_insert) P_ ((struct frame *f, | |
2173 | int x, int y, int width, | |
2174 | int height, int shift_by)); | |
d5cc60b8 | 2175 | |
d74b2553 KS |
2176 | #endif /* HAVE_WINDOW_SYSTEM */ |
2177 | }; | |
d5cc60b8 | 2178 | |
d74b2553 | 2179 | /* The current interface for window-based redisplay. */ |
d5cc60b8 | 2180 | |
d74b2553 | 2181 | extern struct redisplay_interface *rif; |
d5cc60b8 | 2182 | |
5f5c8ee5 GM |
2183 | \f |
2184 | /*********************************************************************** | |
2185 | Images | |
2186 | ***********************************************************************/ | |
2187 | ||
4397e334 | 2188 | #ifdef HAVE_WINDOW_SYSTEM |
5f5c8ee5 GM |
2189 | |
2190 | /* Structure forward declarations. */ | |
2191 | ||
2192 | struct image; | |
2193 | ||
2194 | ||
54bff0bd | 2195 | /* Each image format (JPEG, TIFF, ...) supported is described by |
5f5c8ee5 GM |
2196 | a structure of the type below. */ |
2197 | ||
2198 | struct image_type | |
2199 | { | |
2200 | /* A symbol uniquely identifying the image type, .e.g `jpeg'. */ | |
2201 | Lisp_Object *type; | |
2202 | ||
2203 | /* Check that SPEC is a valid image specification for the given | |
2204 | image type. Value is non-zero if SPEC is valid. */ | |
2205 | int (* valid_p) P_ ((Lisp_Object spec)); | |
2206 | ||
2207 | /* Load IMG which is used on frame F from information contained in | |
2208 | IMG->spec. Value is non-zero if successful. */ | |
2209 | int (* load) P_ ((struct frame *f, struct image *img)); | |
2210 | ||
2211 | /* Free resources of image IMG which is used on frame F. */ | |
2212 | void (* free) P_ ((struct frame *f, struct image *img)); | |
9f2279ad | 2213 | |
5f5c8ee5 GM |
2214 | /* Next in list of all supported image types. */ |
2215 | struct image_type *next; | |
2216 | }; | |
9f2279ad | 2217 | |
9f2279ad | 2218 | |
5f5c8ee5 GM |
2219 | /* Structure describing an image. Specific image formats like XBM are |
2220 | converted into this form, so that display only has to deal with | |
2221 | this type of image. */ | |
9f2279ad | 2222 | |
5f5c8ee5 GM |
2223 | struct image |
2224 | { | |
2225 | /* The time in seconds at which the image was last displayed. Set | |
2226 | in prepare_image_for_display. */ | |
2227 | unsigned long timestamp; | |
9f2279ad | 2228 | |
5f5c8ee5 GM |
2229 | /* Pixmaps of the image. */ |
2230 | Pixmap pixmap, mask; | |
9f2279ad | 2231 | |
5f5c8ee5 GM |
2232 | /* Colors allocated for this image, if any. Allocated via xmalloc. */ |
2233 | unsigned long *colors; | |
2234 | int ncolors; | |
9f2279ad | 2235 | |
0ff7c0d4 MB |
2236 | /* A single `background color' for this image, for the use of anyone that |
2237 | cares about such a thing. Only valid if the `background_valid' field | |
2238 | is true. This should generally be accessed by calling the accessor | |
2239 | macro `IMAGE_BACKGROUND', which will heuristically calculate a value | |
2240 | if necessary. */ | |
2241 | unsigned long background; | |
2242 | ||
2243 | /* True if this image has a `transparent' background -- that is, is | |
2244 | uses an image mask. The accessor macro for this is | |
2245 | `IMAGE_BACKGROUND_TRANSPARENT'. */ | |
2246 | unsigned background_transparent : 1; | |
2247 | ||
2248 | /* True if the `background' and `background_transparent' fields are | |
2249 | valid, respectively. */ | |
2250 | unsigned background_valid : 1, background_transparent_valid : 1; | |
2251 | ||
5f5c8ee5 GM |
2252 | /* Width and height of the image. */ |
2253 | int width, height; | |
87485d6f | 2254 | |
5f5c8ee5 GM |
2255 | /* These values are used for the rectangles displayed for images |
2256 | that can't be loaded. */ | |
2257 | #define DEFAULT_IMAGE_WIDTH 30 | |
2258 | #define DEFAULT_IMAGE_HEIGHT 30 | |
9f2279ad | 2259 | |
bdda7eb0 | 2260 | /* Percent of image height used as ascent. A value of |
54bff0bd | 2261 | CENTERED_IMAGE_ASCENT means draw the image centered on the |
bdda7eb0 | 2262 | line. */ |
5f5c8ee5 GM |
2263 | int ascent; |
2264 | #define DEFAULT_IMAGE_ASCENT 50 | |
bdda7eb0 | 2265 | #define CENTERED_IMAGE_ASCENT -1 |
c22ca93b | 2266 | |
5f5c8ee5 GM |
2267 | /* Lisp specification of this image. */ |
2268 | Lisp_Object spec; | |
c22ca93b | 2269 | |
5f5c8ee5 GM |
2270 | /* Relief to draw around the image. */ |
2271 | int relief; | |
c22ca93b | 2272 | |
f8215993 GM |
2273 | /* Optional margins around the image. This includes the relief. */ |
2274 | int hmargin, vmargin; | |
5f5c8ee5 GM |
2275 | |
2276 | /* Reference to the type of the image. */ | |
2277 | struct image_type *type; | |
2278 | ||
a7ac64a9 GM |
2279 | /* 1 means that loading the image failed. Don't try again. */ |
2280 | unsigned load_failed_p; | |
2281 | ||
5f5c8ee5 GM |
2282 | /* A place for image types to store additional data. The member |
2283 | data.lisp_val is marked during GC, so it's safe to store Lisp data | |
2284 | there. Image types should free this data when their `free' | |
2285 | function is called. */ | |
2286 | struct | |
c22ca93b | 2287 | { |
5f5c8ee5 GM |
2288 | int int_val; |
2289 | void *ptr_val; | |
2290 | Lisp_Object lisp_val; | |
2291 | } data; | |
c22ca93b | 2292 | |
5f5c8ee5 GM |
2293 | /* Hash value of image specification to speed up comparisons. */ |
2294 | unsigned hash; | |
2295 | ||
2296 | /* Image id of this image. */ | |
2297 | int id; | |
2298 | ||
2299 | /* Hash collision chain. */ | |
2300 | struct image *next, *prev; | |
2301 | }; | |
2302 | ||
2303 | ||
2304 | /* Cache of images. Each frame has a cache. X frames with the same | |
2305 | x_display_info share their caches. */ | |
2306 | ||
2307 | struct image_cache | |
2308 | { | |
2309 | /* Hash table of images. */ | |
2310 | struct image **buckets; | |
2311 | ||
2312 | /* Vector mapping image ids to images. */ | |
2313 | struct image **images; | |
2314 | ||
2315 | /* Allocated size of `images'. */ | |
2316 | unsigned size; | |
2317 | ||
2318 | /* Number of images in the cache. */ | |
2319 | unsigned used; | |
2320 | ||
2321 | /* Reference count (number of frames sharing this cache). */ | |
2322 | int refcount; | |
2323 | }; | |
2324 | ||
2325 | ||
5f5c8ee5 GM |
2326 | /* Value is a pointer to the image with id ID on frame F, or null if |
2327 | no image with that id exists. */ | |
2328 | ||
2329 | #define IMAGE_FROM_ID(F, ID) \ | |
2330 | (((ID) >= 0 && (ID) < (FRAME_X_IMAGE_CACHE (F)->used)) \ | |
2331 | ? FRAME_X_IMAGE_CACHE (F)->images[ID] \ | |
2332 | : NULL) | |
2333 | ||
2334 | /* Size of bucket vector of image caches. Should be prime. */ | |
2335 | ||
2336 | #define IMAGE_CACHE_BUCKETS_SIZE 1001 | |
2337 | ||
4397e334 | 2338 | #endif /* HAVE_WINDOW_SYSTEM */ |
5f5c8ee5 GM |
2339 | |
2340 | ||
2341 | \f | |
2342 | /*********************************************************************** | |
9ea173e8 | 2343 | Tool-bars |
5f5c8ee5 GM |
2344 | ***********************************************************************/ |
2345 | ||
9ea173e8 GM |
2346 | /* Enumeration defining where to find tool-bar item information in |
2347 | tool-bar items vectors stored with frames. Each tool-bar item | |
2348 | occupies TOOL_BAR_ITEM_NSLOTS elements in such a vector. */ | |
5f5c8ee5 | 2349 | |
9ea173e8 | 2350 | enum tool_bar_item_idx |
5f5c8ee5 | 2351 | { |
9ea173e8 | 2352 | /* The key of the tool-bar item. Used to remove items when a binding |
5f5c8ee5 | 2353 | for `undefined' is found. */ |
9ea173e8 | 2354 | TOOL_BAR_ITEM_KEY, |
5f5c8ee5 GM |
2355 | |
2356 | /* Non-nil if item is enabled. */ | |
9ea173e8 | 2357 | TOOL_BAR_ITEM_ENABLED_P, |
5f5c8ee5 GM |
2358 | |
2359 | /* Non-nil if item is selected (pressed). */ | |
9ea173e8 | 2360 | TOOL_BAR_ITEM_SELECTED_P, |
5f5c8ee5 GM |
2361 | |
2362 | /* Caption. */ | |
9ea173e8 | 2363 | TOOL_BAR_ITEM_CAPTION, |
5f5c8ee5 GM |
2364 | |
2365 | /* Image(s) to display. This is either a single image specification | |
2366 | or a vector of specifications. */ | |
9ea173e8 | 2367 | TOOL_BAR_ITEM_IMAGES, |
5f5c8ee5 GM |
2368 | |
2369 | /* The binding. */ | |
9ea173e8 | 2370 | TOOL_BAR_ITEM_BINDING, |
5f5c8ee5 GM |
2371 | |
2372 | /* Button type. One of nil, `:radio' or `:toggle'. */ | |
9ea173e8 | 2373 | TOOL_BAR_ITEM_TYPE, |
c22ca93b | 2374 | |
5f5c8ee5 | 2375 | /* Help string. */ |
9ea173e8 | 2376 | TOOL_BAR_ITEM_HELP, |
5f5c8ee5 | 2377 | |
9ea173e8 GM |
2378 | /* Sentinel = number of slots in tool_bar_items occupied by one |
2379 | tool-bar item. */ | |
2380 | TOOL_BAR_ITEM_NSLOTS | |
5f5c8ee5 GM |
2381 | }; |
2382 | ||
2383 | ||
2384 | /* An enumeration for the different images that can be specified | |
9ea173e8 | 2385 | for a tool-bar item. */ |
5f5c8ee5 | 2386 | |
9ea173e8 | 2387 | enum tool_bar_item_image |
5f5c8ee5 | 2388 | { |
9ea173e8 GM |
2389 | TOOL_BAR_IMAGE_ENABLED_SELECTED, |
2390 | TOOL_BAR_IMAGE_ENABLED_DESELECTED, | |
2391 | TOOL_BAR_IMAGE_DISABLED_SELECTED, | |
2392 | TOOL_BAR_IMAGE_DISABLED_DESELECTED | |
5f5c8ee5 GM |
2393 | }; |
2394 | ||
9ea173e8 | 2395 | /* Margin around tool-bar buttons in pixels. */ |
5f5c8ee5 | 2396 | |
cc4cb755 | 2397 | extern Lisp_Object Vtool_bar_button_margin; |
5f5c8ee5 | 2398 | |
9ea173e8 | 2399 | /* Thickness of relief to draw around tool-bar buttons. */ |
5f5c8ee5 | 2400 | |
31ade731 | 2401 | extern EMACS_INT tool_bar_button_relief; |
5f5c8ee5 | 2402 | |
cc4cb755 GM |
2403 | /* Default values of the above variables. */ |
2404 | ||
cfa5cf43 PJ |
2405 | #define DEFAULT_TOOL_BAR_BUTTON_MARGIN 4 |
2406 | #define DEFAULT_TOOL_BAR_BUTTON_RELIEF 1 | |
cc4cb755 GM |
2407 | |
2408 | /* The height in pixels of the default tool-bar images. */ | |
2409 | ||
2410 | #define DEFAULT_TOOL_BAR_IMAGE_HEIGHT 24 | |
5f5c8ee5 GM |
2411 | |
2412 | \f | |
2413 | /*********************************************************************** | |
a0816661 MB |
2414 | Terminal Capabilities |
2415 | ***********************************************************************/ | |
2416 | ||
8da139bc MB |
2417 | /* Each of these is a bit representing a terminal `capability' (bold, |
2418 | inverse, etc). They are or'd together to specify the set of | |
2419 | capabilities being queried for when calling `tty_capable_p' (which | |
2420 | returns true if the terminal supports all of them). */ | |
f0be5454 | 2421 | |
a0816661 MB |
2422 | #define TTY_CAP_INVERSE 0x01 |
2423 | #define TTY_CAP_UNDERLINE 0x02 | |
2424 | #define TTY_CAP_BOLD 0x04 | |
2425 | #define TTY_CAP_DIM 0x08 | |
2426 | #define TTY_CAP_BLINK 0x10 | |
2427 | #define TTY_CAP_ALT_CHARSET 0x20 | |
2428 | ||
2429 | \f | |
2430 | /*********************************************************************** | |
2431 | Function Prototypes | |
5f5c8ee5 GM |
2432 | ***********************************************************************/ |
2433 | ||
2434 | /* Defined in xdisp.c */ | |
2435 | ||
65ace4c2 GM |
2436 | struct glyph_row *row_containing_pos P_ ((struct window *, int, |
2437 | struct glyph_row *, | |
229151ba | 2438 | struct glyph_row *, int)); |
56ab5d27 | 2439 | int string_buffer_position P_ ((struct window *, Lisp_Object, int)); |
5be57d49 | 2440 | int line_bottom_y P_ ((struct it *)); |
ce0b6717 | 2441 | int display_prop_intangible_p P_ ((Lisp_Object)); |
af42d485 | 2442 | void resize_echo_area_exactly P_ ((void)); |
c99f6080 | 2443 | int resize_mini_window P_ ((struct window *, int)); |
5f5c8ee5 GM |
2444 | int try_window P_ ((Lisp_Object, struct text_pos)); |
2445 | void window_box P_ ((struct window *, int, int *, int *, int *, int *)); | |
2446 | int window_box_height P_ ((struct window *)); | |
2447 | int window_text_bottom_y P_ ((struct window *)); | |
2448 | int window_box_width P_ ((struct window *, int)); | |
2449 | int window_box_left P_ ((struct window *, int)); | |
2450 | int window_box_right P_ ((struct window *, int)); | |
2451 | void window_box_edges P_ ((struct window *, int, int *, int *, int *, int *)); | |
d74b2553 | 2452 | int estimate_mode_line_height P_ ((struct frame *, enum face_id)); |
1853f74c KS |
2453 | void pixel_to_glyph_coords P_ ((struct frame *, int, int, int *, int *, |
2454 | NativeRectangle *, int)); | |
2455 | int glyph_to_pixel_coords P_ ((struct window *, int, int, int *, int *)); | |
5f5c8ee5 | 2456 | void mark_window_display_accurate P_ ((Lisp_Object, int)); |
69d1478a | 2457 | void redisplay_preserve_echo_area P_ ((int)); |
5f5c8ee5 GM |
2458 | void set_cursor_from_row P_ ((struct window *, struct glyph_row *, |
2459 | struct glyph_matrix *, int, int, int, int)); | |
2460 | void init_iterator P_ ((struct it *, struct window *, int, | |
2461 | int, struct glyph_row *, enum face_id)); | |
2462 | void init_iterator_to_row_start P_ ((struct it *, struct window *, | |
2463 | struct glyph_row *)); | |
2464 | int get_next_display_element P_ ((struct it *)); | |
ff2a2e6b | 2465 | void set_iterator_to_next P_ ((struct it *, int)); |
5f5c8ee5 GM |
2466 | void produce_glyphs P_ ((struct it *)); |
2467 | void produce_special_glyphs P_ ((struct it *, enum display_element_type)); | |
2468 | void start_display P_ ((struct it *, struct window *, struct text_pos)); | |
2469 | void move_it_to P_ ((struct it *, int, int, int, int, int)); | |
2470 | void move_it_vertically P_ ((struct it *, int)); | |
d1d1aa9c | 2471 | void move_it_vertically_backward P_ ((struct it *, int)); |
5f5c8ee5 | 2472 | void move_it_by_lines P_ ((struct it *, int, int)); |
5b2ad813 | 2473 | void move_it_past_eol P_ ((struct it *)); |
c4f2431a | 2474 | int in_display_vector_p P_ ((struct it *)); |
5f5c8ee5 GM |
2475 | int frame_mode_line_height P_ ((struct frame *)); |
2476 | void highlight_trailing_whitespace P_ ((struct frame *, struct glyph_row *)); | |
f4e1400d KS |
2477 | void draw_row_fringe_bitmaps P_ ((struct window *, struct glyph_row *)); |
2478 | void compute_fringe_widths P_ ((struct frame *, int)); | |
9ea173e8 | 2479 | extern Lisp_Object Qtool_bar; |
c1ff17c5 | 2480 | extern Lisp_Object Vshow_trailing_whitespace; |
5f380a5b | 2481 | extern int mode_line_in_non_selected_windows; |
5f5c8ee5 | 2482 | extern int redisplaying_p; |
8ee2a6b1 | 2483 | extern Lisp_Object Vimage_types; |
9ee84299 | 2484 | extern void add_to_log P_ ((char *, Lisp_Object, Lisp_Object)); |
583dba75 | 2485 | extern int help_echo_showing_p; |
e9e32f46 | 2486 | extern int current_mode_line_height, current_header_line_height; |
d74b2553 KS |
2487 | extern Lisp_Object help_echo_string, help_echo_window; |
2488 | extern Lisp_Object help_echo_object, previous_help_echo_string; | |
2489 | extern int help_echo_pos; | |
2490 | extern struct frame *last_mouse_frame; | |
2491 | extern int last_tool_bar_item; | |
2492 | extern int mouse_autoselect_window; | |
2493 | ||
2494 | #ifdef HAVE_WINDOW_SYSTEM | |
5f5c8ee5 | 2495 | |
d5cc60b8 KS |
2496 | #if GLYPH_DEBUG |
2497 | extern void dump_glyph_string P_ ((struct glyph_string *)); | |
2498 | #endif | |
2499 | ||
2500 | extern void x_get_glyph_overhangs P_ ((struct glyph *, struct frame *, | |
2501 | int *, int *)); | |
2502 | extern void x_produce_glyphs P_ ((struct it *)); | |
d5cc60b8 | 2503 | |
d74b2553 KS |
2504 | extern void x_write_glyphs P_ ((struct glyph *, int)); |
2505 | extern void x_insert_glyphs P_ ((struct glyph *, int len)); | |
2506 | extern void x_clear_end_of_line P_ ((int)); | |
2507 | ||
2508 | extern int x_stretch_cursor_p; | |
2509 | extern struct cursor_pos output_cursor; | |
2510 | ||
2511 | extern void x_fix_overlapping_area P_ ((struct window *, struct glyph_row *, | |
2512 | enum glyph_row_area)); | |
2513 | extern void draw_phys_cursor_glyph P_ ((struct window *, | |
2514 | struct glyph_row *, | |
2515 | enum draw_glyphs_face)); | |
2516 | extern void erase_phys_cursor P_ ((struct window *)); | |
2517 | extern void display_and_set_cursor P_ ((struct window *, | |
2518 | int, int, int, int, int)); | |
2519 | ||
2520 | extern void set_output_cursor P_ ((struct cursor_pos *)); | |
2521 | extern void x_cursor_to P_ ((int, int, int, int)); | |
2522 | ||
2523 | extern void x_update_cursor P_ ((struct frame *, int)); | |
2524 | extern void x_clear_cursor P_ ((struct window *)); | |
2525 | extern void x_draw_vertical_border P_ ((struct window *w)); | |
2526 | ||
2527 | extern void frame_to_window_pixel_xy P_ ((struct window *, int *, int *)); | |
2528 | extern void get_glyph_string_clip_rect P_ ((struct glyph_string *, | |
2529 | NativeRectangle *nr)); | |
2530 | extern void note_mouse_highlight P_ ((struct frame *, int, int)); | |
2531 | extern void x_clear_window_mouse_face P_ ((struct window *)); | |
2532 | extern void cancel_mouse_face P_ ((struct frame *)); | |
2533 | ||
2534 | extern void handle_tool_bar_click P_ ((struct frame *, | |
2535 | int, int, int, unsigned int)); | |
2536 | ||
2537 | /* msdos.c defines its own versions of these functions. */ | |
2538 | extern int clear_mouse_face P_ ((Display_Info *)); | |
2539 | extern void show_mouse_face P_ ((Display_Info *, enum draw_glyphs_face)); | |
2540 | extern int cursor_in_mouse_face_p P_ ((struct window *w)); | |
2541 | ||
2542 | extern void expose_frame P_ ((struct frame *, int, int, int, int)); | |
2543 | extern int x_intersect_rectangles P_ ((XRectangle *, XRectangle *, | |
2544 | XRectangle *)); | |
2545 | #endif | |
d5cc60b8 | 2546 | |
5f5c8ee5 GM |
2547 | /* Defined in sysdep.c */ |
2548 | ||
2549 | void get_frame_size P_ ((int *, int *)); | |
2550 | void request_sigio P_ ((void)); | |
2551 | void unrequest_sigio P_ ((void)); | |
2552 | int tabs_safe_p P_ ((void)); | |
2553 | void init_baud_rate P_ ((void)); | |
2554 | void init_sigio P_ ((int)); | |
2555 | ||
8317e104 GM |
2556 | /* Defined in xfaces.c */ |
2557 | ||
2ad412d7 GM |
2558 | #ifdef HAVE_X_WINDOWS |
2559 | void x_free_colors P_ ((struct frame *, unsigned long *, int)); | |
2560 | #endif | |
5f5c8ee5 | 2561 | |
76a6bc49 GM |
2562 | void update_face_from_frame_parameter P_ ((struct frame *, Lisp_Object, |
2563 | Lisp_Object)); | |
036480cb | 2564 | Lisp_Object tty_color_name P_ ((struct frame *, int)); |
5f5c8ee5 | 2565 | void clear_face_cache P_ ((int)); |
1cc03123 EZ |
2566 | unsigned long load_color P_ ((struct frame *, struct face *, Lisp_Object, |
2567 | enum lface_attribute_index)); | |
5f5c8ee5 | 2568 | void unload_color P_ ((struct frame *, unsigned long)); |
5f5c8ee5 GM |
2569 | int ascii_face_of_lisp_face P_ ((struct frame *, int)); |
2570 | void prepare_face_for_display P_ ((struct frame *, struct face *)); | |
77be52b7 | 2571 | int xstricmp P_ ((const unsigned char *, const unsigned char *)); |
b3091a23 | 2572 | int lookup_face P_ ((struct frame *, Lisp_Object *, int, struct face *)); |
5f5c8ee5 GM |
2573 | int lookup_named_face P_ ((struct frame *, Lisp_Object, int)); |
2574 | int smaller_face P_ ((struct frame *, int, int)); | |
2575 | int face_with_height P_ ((struct frame *, int, int)); | |
1cc03123 | 2576 | int lookup_derived_face P_ ((struct frame *, Lisp_Object, int, int)); |
5f5c8ee5 GM |
2577 | void init_frame_faces P_ ((struct frame *)); |
2578 | void free_frame_faces P_ ((struct frame *)); | |
2579 | void recompute_basic_faces P_ ((struct frame *)); | |
2580 | int face_at_buffer_position P_ ((struct window *, int, int, int, int *, | |
2581 | int, int)); | |
8d721a0d GM |
2582 | int face_at_string_position P_ ((struct window *, Lisp_Object, int, int, int, |
2583 | int, int *, enum face_id, int)); | |
5f5c8ee5 GM |
2584 | int compute_char_face P_ ((struct frame *, int, Lisp_Object)); |
2585 | void free_all_realized_faces P_ ((Lisp_Object)); | |
2586 | extern Lisp_Object Qforeground_color, Qbackground_color; | |
f0ba2d22 | 2587 | extern char unspecified_fg[], unspecified_bg[]; |
b3091a23 | 2588 | void free_realized_multibyte_face P_ ((struct frame *, int)); |
5f5c8ee5 GM |
2589 | |
2590 | /* Defined in xfns.c */ | |
2591 | ||
4397e334 | 2592 | #ifdef HAVE_X_WINDOWS |
5ae040a6 | 2593 | void gamma_correct P_ ((struct frame *, XColor *)); |
4397e334 AI |
2594 | #endif |
2595 | #ifdef WINDOWSNT | |
2596 | void gamma_correct P_ ((struct frame *, COLORREF *)); | |
2597 | #endif | |
2598 | ||
2599 | #ifdef HAVE_WINDOW_SYSTEM | |
2600 | ||
5ae040a6 | 2601 | void x_kill_gs_process P_ ((Pixmap, struct frame *)); |
5f5c8ee5 GM |
2602 | int x_screen_planes P_ ((struct frame *)); |
2603 | void x_implicitly_set_name P_ ((struct frame *, Lisp_Object, Lisp_Object)); | |
2604 | struct image_cache *make_image_cache P_ ((void)); | |
2605 | void free_image_cache P_ ((struct frame *)); | |
2606 | void clear_image_cache P_ ((struct frame *, int)); | |
2607 | void forall_images_in_image_cache P_ ((struct frame *, | |
2608 | void (*) P_ ((struct image *)))); | |
2609 | int valid_image_p P_ ((Lisp_Object)); | |
2610 | void prepare_image_for_display P_ ((struct frame *, struct image *)); | |
2611 | int lookup_image P_ ((struct frame *, Lisp_Object)); | |
c26e3f6c RS |
2612 | |
2613 | #ifdef HAVE_X_WINDOWS | |
0ff7c0d4 MB |
2614 | unsigned long image_background P_ ((struct image *, struct frame *, |
2615 | XImage *ximg)); | |
2616 | int image_background_transparent P_ ((struct image *, struct frame *, | |
2617 | XImage *mask)); | |
c26e3f6c RS |
2618 | #endif /* HAVE_X_WINDOWS */ |
2619 | ||
4811586b | 2620 | extern Lisp_Object tip_frame; |
5f5c8ee5 | 2621 | extern Window tip_window; |
88a19a90 | 2622 | EXFUN (Fx_show_tip, 6); |
5f5c8ee5 | 2623 | EXFUN (Fx_hide_tip, 0); |
6a2b7977 GM |
2624 | extern void start_hourglass P_ ((void)); |
2625 | extern void cancel_hourglass P_ ((void)); | |
2626 | extern int display_hourglass_p; | |
5f5c8ee5 | 2627 | |
0ff7c0d4 MB |
2628 | /* Returns the background color of IMG, calculating one heuristically if |
2629 | necessary. If non-zero, XIMG is an existing XImage object to use for | |
2630 | the heuristic. */ | |
2631 | ||
2632 | #define IMAGE_BACKGROUND(img, f, ximg) \ | |
2633 | ((img)->background_valid \ | |
2634 | ? (img)->background \ | |
2635 | : image_background (img, f, ximg)) | |
2636 | ||
2637 | /* Returns true if IMG has a `transparent' background, using heuristics | |
2638 | to decide if necessary. If non-zero, MASK is an existing XImage | |
2639 | object to use for the heuristic. */ | |
2640 | ||
2641 | #define IMAGE_BACKGROUND_TRANSPARENT(img, f, mask) \ | |
2642 | ((img)->background_transparent_valid \ | |
2643 | ? (img)->background_transparent \ | |
2644 | : image_background_transparent (img, f, mask)) | |
2645 | ||
4397e334 | 2646 | #endif /* HAVE_WINDOW_SYSTEM */ |
5f5c8ee5 GM |
2647 | |
2648 | ||
2649 | /* Defined in xmenu.c */ | |
2650 | ||
2651 | int popup_activated P_ ((void)); | |
2652 | ||
3f7267e7 | 2653 | /* Defined in dispnew.c */ |
5f5c8ee5 | 2654 | |
283c6e3e | 2655 | extern int inverse_video; |
9a636f37 GM |
2656 | extern int required_matrix_width P_ ((struct window *)); |
2657 | extern int required_matrix_height P_ ((struct window *)); | |
d74b2553 KS |
2658 | extern Lisp_Object mode_line_string P_ ((struct window *, int, int, |
2659 | enum window_part, int *)); | |
2660 | extern Lisp_Object marginal_area_string P_ ((struct window *, int, int, | |
2661 | enum window_part, int *)); | |
ec5d8db7 AS |
2662 | extern void redraw_frame P_ ((struct frame *)); |
2663 | extern void redraw_garbaged_frames P_ ((void)); | |
ec5d8db7 | 2664 | extern void cancel_line P_ ((int, struct frame *)); |
ec5d8db7 | 2665 | extern void init_desired_glyphs P_ ((struct frame *)); |
ec5d8db7 | 2666 | extern int scroll_frame_lines P_ ((struct frame *, int, int, int, int)); |
ec5d8db7 AS |
2667 | extern int direct_output_for_insert P_ ((int)); |
2668 | extern int direct_output_forward_char P_ ((int)); | |
2669 | extern int update_frame P_ ((struct frame *, int, int)); | |
ec5d8db7 | 2670 | extern int scrolling P_ ((struct frame *)); |
ec5d8db7 | 2671 | extern void bitch_at_user P_ ((void)); |
5f5c8ee5 GM |
2672 | void adjust_glyphs P_ ((struct frame *)); |
2673 | void free_glyphs P_ ((struct frame *)); | |
2674 | void free_window_matrices P_ ((struct window *)); | |
2675 | void check_glyph_memory P_ ((void)); | |
2676 | void mirrored_line_dance P_ ((struct glyph_matrix *, int, int, int *, char *)); | |
2677 | void clear_glyph_matrix P_ ((struct glyph_matrix *)); | |
2678 | void clear_current_matrices P_ ((struct frame *f)); | |
2679 | void clear_desired_matrices P_ ((struct frame *)); | |
2680 | void shift_glyph_matrix P_ ((struct window *, struct glyph_matrix *, | |
2681 | int, int, int)); | |
2682 | void rotate_matrix P_ ((struct glyph_matrix *, int, int, int)); | |
84fc6d4d GM |
2683 | void increment_matrix_positions P_ ((struct glyph_matrix *, |
2684 | int, int, int, int)); | |
5f5c8ee5 | 2685 | void blank_row P_ ((struct window *, struct glyph_row *, int)); |
84fc6d4d | 2686 | void increment_row_positions P_ ((struct glyph_row *, int, int)); |
5f5c8ee5 GM |
2687 | void enable_glyph_matrix_rows P_ ((struct glyph_matrix *, int, int, int)); |
2688 | void clear_glyph_row P_ ((struct glyph_row *)); | |
2689 | void prepare_desired_row P_ ((struct glyph_row *)); | |
2690 | int line_hash_code P_ ((struct glyph_row *)); | |
2691 | void set_window_update_flags P_ ((struct window *, int)); | |
2692 | void write_glyphs P_ ((struct glyph *, int)); | |
2693 | void insert_glyphs P_ ((struct glyph *, int)); | |
2694 | void redraw_frame P_ ((struct frame *)); | |
2695 | void redraw_garbaged_frames P_ ((void)); | |
2696 | int scroll_cost P_ ((struct frame *, int, int, int)); | |
2697 | int direct_output_for_insert P_ ((int)); | |
2698 | int direct_output_forward_char P_ ((int)); | |
2699 | int update_frame P_ ((struct frame *, int, int)); | |
2700 | void update_single_window P_ ((struct window *, int)); | |
2701 | int scrolling P_ ((struct frame *)); | |
e0d9aa62 GM |
2702 | void buffer_posn_from_coords P_ ((struct window *, int *, int *, |
2703 | Lisp_Object *, struct display_pos *)); | |
3f7267e7 GM |
2704 | void do_pending_window_change P_ ((int)); |
2705 | void change_frame_size P_ ((struct frame *, int, int, int, int, int)); | |
5f5c8ee5 GM |
2706 | void bitch_at_user P_ ((void)); |
2707 | Lisp_Object sit_for P_ ((int, int, int, int, int)); | |
2708 | void init_display P_ ((void)); | |
2709 | void syms_of_display P_ ((void)); | |
69a7a14d | 2710 | extern Lisp_Object Qredisplay_dont_pause; |
ec5d8db7 AS |
2711 | |
2712 | /* Defined in term.c */ | |
5f5c8ee5 | 2713 | |
ec5d8db7 AS |
2714 | extern void ring_bell P_ ((void)); |
2715 | extern void set_terminal_modes P_ ((void)); | |
2716 | extern void reset_terminal_modes P_ ((void)); | |
2717 | extern void update_begin P_ ((struct frame *)); | |
2718 | extern void update_end P_ ((struct frame *)); | |
2719 | extern void set_terminal_window P_ ((int)); | |
2720 | extern void set_scroll_region P_ ((int, int)); | |
2721 | extern void turn_off_insert P_ ((void)); | |
2722 | extern void turn_off_highlight P_ ((void)); | |
2723 | extern void background_highlight P_ ((void)); | |
ec5d8db7 AS |
2724 | extern void clear_frame P_ ((void)); |
2725 | extern void clear_end_of_line P_ ((int)); | |
2726 | extern void clear_end_of_line_raw P_ ((int)); | |
ec5d8db7 AS |
2727 | extern void delete_glyphs P_ ((int)); |
2728 | extern void ins_del_lines P_ ((int, int)); | |
2729 | extern int string_cost P_ ((char *)); | |
2730 | extern int per_line_cost P_ ((char *)); | |
2731 | extern void calculate_costs P_ ((struct frame *)); | |
70f50bf1 EZ |
2732 | extern void set_tty_color_mode P_ ((struct frame *, Lisp_Object)); |
2733 | extern void tty_setup_colors P_ ((int)); | |
ec5d8db7 AS |
2734 | extern void term_init P_ ((char *)); |
2735 | extern void fatal P_ ((/* char *, ... */)); | |
5f5c8ee5 | 2736 | void cursor_to P_ ((int, int)); |
a0816661 | 2737 | extern int tty_capable_p P_ ((struct frame *, unsigned, unsigned long, unsigned long)); |
ec5d8db7 AS |
2738 | |
2739 | /* Defined in scroll.c */ | |
5f5c8ee5 | 2740 | |
ec5d8db7 AS |
2741 | extern int scrolling_max_lines_saved P_ ((int, int, int *, int *, int *)); |
2742 | extern int scroll_cost P_ ((struct frame *, int, int, int)); | |
2743 | extern void do_line_insertion_deletion_costs P_ ((struct frame *, char *, | |
2744 | char *, char *, char *, | |
2745 | char *, char *, int)); | |
5f5c8ee5 GM |
2746 | void scrolling_1 P_ ((struct frame *, int, int, int, int *, int *, int *, |
2747 | int *, int)); | |
87485d6f | 2748 | |
e6b3aecd KS |
2749 | /* Defined in frame.c */ |
2750 | ||
2751 | #ifdef HAVE_WINDOW_SYSTEM | |
2752 | ||
2753 | /* Types we might convert a resource string into. */ | |
2754 | enum resource_types | |
2755 | { | |
2756 | RES_TYPE_NUMBER, | |
2757 | RES_TYPE_FLOAT, | |
2758 | RES_TYPE_BOOLEAN, | |
2759 | RES_TYPE_STRING, | |
2760 | RES_TYPE_SYMBOL | |
2761 | }; | |
2762 | ||
2763 | extern Lisp_Object x_get_arg P_ ((Display_Info *, Lisp_Object, | |
2764 | Lisp_Object, char *, char *class, | |
2765 | enum resource_types)); | |
2766 | extern Lisp_Object x_frame_get_arg P_ ((struct frame *, Lisp_Object, | |
2767 | Lisp_Object, char *, char *, | |
2768 | enum resource_types)); | |
2769 | extern Lisp_Object x_frame_get_and_record_arg P_ (( | |
2770 | struct frame *, Lisp_Object, | |
2771 | Lisp_Object, char *, char *, | |
2772 | enum resource_types)); | |
2773 | extern Lisp_Object x_default_parameter P_ ((struct frame *, Lisp_Object, | |
2774 | Lisp_Object, Lisp_Object, | |
2775 | char *, char *, | |
2776 | enum resource_types)); | |
2777 | ||
2778 | #endif /* HAVE_WINDOW_SYSTEM */ | |
2779 | ||
5f5c8ee5 | 2780 | #endif /* not DISPEXTERN_H_INCLUDED */ |
ab5796a9 MB |
2781 | |
2782 | /* arch-tag: c65c475f-1c1e-4534-8795-990b8509fd65 | |
2783 | (do not change this comment) */ |