Commit | Line | Data |
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c22ca93b | 1 | /* Interface definitions for display code. |
0b5538bd | 2 | Copyright (C) 1985, 1993, 1994, 1997, 1998, 1999, 2000, 2001, 2002, |
114f9c96 | 3 | 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
8cabe764 | 4 | Free Software Foundation, Inc. |
c22ca93b JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
b9b1cc14 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
c22ca93b | 9 | it under the terms of the GNU General Public License as published by |
b9b1cc14 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
c22ca93b JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
b9b1cc14 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
c22ca93b | 20 | |
4d2036e4 | 21 | /* New redisplay written by Gerd Moellmann <gerd@gnu.org>. */ |
87485d6f | 22 | |
5f5c8ee5 GM |
23 | #ifndef DISPEXTERN_H_INCLUDED |
24 | #define DISPEXTERN_H_INCLUDED | |
c22ca93b JB |
25 | |
26 | #ifdef HAVE_X_WINDOWS | |
94e32607 | 27 | |
9f2279ad | 28 | #include <X11/Xlib.h> |
8317e104 GM |
29 | #ifdef USE_X_TOOLKIT |
30 | #include <X11/Intrinsic.h> | |
31 | #endif /* USE_X_TOOLKIT */ | |
94e32607 JB |
32 | |
33 | #else /* !HAVE_X_WINDOWS */ | |
34 | ||
35 | /* X-related stuff used by non-X gui code. */ | |
36 | ||
37 | typedef struct { | |
38 | unsigned long pixel; | |
39 | unsigned short red, green, blue; | |
40 | char flags; | |
41 | char pad; | |
42 | } XColor; | |
43 | ||
8317e104 | 44 | #endif /* HAVE_X_WINDOWS */ |
87485d6f MW |
45 | |
46 | #ifdef MSDOS | |
47 | #include "msdos.h" | |
48 | #endif | |
9f2279ad | 49 | |
d74b2553 KS |
50 | #ifdef HAVE_X_WINDOWS |
51 | typedef struct x_display_info Display_Info; | |
6b61353c KH |
52 | typedef XImage * XImagePtr; |
53 | typedef XImagePtr XImagePtr_or_DC; | |
d74b2553 KS |
54 | #define NativeRectangle XRectangle |
55 | #endif | |
56 | ||
497fbd42 | 57 | #ifdef HAVE_NTGUI |
c0ac470c | 58 | #include "w32gui.h" |
d74b2553 | 59 | typedef struct w32_display_info Display_Info; |
6b61353c KH |
60 | typedef XImage *XImagePtr; |
61 | typedef HDC XImagePtr_or_DC; | |
497fbd42 GV |
62 | #endif |
63 | ||
edfda783 AR |
64 | #ifdef HAVE_NS |
65 | #include "nsgui.h" | |
66 | /* following typedef needed to accomodate the MSDOS port, believe it or not */ | |
67 | typedef struct ns_display_info Display_Info; | |
68 | typedef Pixmap XImagePtr; | |
69 | typedef XImagePtr XImagePtr_or_DC; | |
70 | #endif | |
71 | ||
7ea692f6 | 72 | #ifndef HAVE_WINDOW_SYSTEM |
d009ae66 EZ |
73 | typedef int Cursor; |
74 | #define No_Cursor (0) | |
75 | #endif | |
76 | ||
dfbe5d05 KS |
77 | #ifndef NativeRectangle |
78 | #define NativeRectangle int | |
79 | #endif | |
80 | ||
5f5c8ee5 GM |
81 | /* Structure forward declarations. Some are here because function |
82 | prototypes below reference structure types before their definition | |
83 | in this file. Some are here because not every file including | |
84 | dispextern.h also includes frame.h and windows.h. */ | |
85 | ||
86 | struct glyph; | |
87 | struct glyph_row; | |
88 | struct glyph_matrix; | |
89 | struct glyph_pool; | |
90 | struct frame; | |
91 | struct window; | |
92 | ||
93 | ||
d74b2553 KS |
94 | /* Values returned from coordinates_in_window. */ |
95 | ||
96 | enum window_part | |
97 | { | |
98 | ON_NOTHING, | |
99 | ON_TEXT, | |
100 | ON_MODE_LINE, | |
101 | ON_VERTICAL_BORDER, | |
102 | ON_HEADER_LINE, | |
103 | ON_LEFT_FRINGE, | |
104 | ON_RIGHT_FRINGE, | |
105 | ON_LEFT_MARGIN, | |
ab431b61 RS |
106 | ON_RIGHT_MARGIN, |
107 | ON_SCROLL_BAR | |
d74b2553 KS |
108 | }; |
109 | ||
6b61353c | 110 | /* Number of bits allocated to store fringe bitmap numbers. */ |
b3b08f03 | 111 | #define FRINGE_ID_BITS 16 |
6b61353c | 112 | |
5a874e95 YM |
113 | /* Number of bits allocated to store fringe bitmap height. */ |
114 | #define FRINGE_HEIGHT_BITS 8 | |
d74b2553 | 115 | |
5f5c8ee5 | 116 | \f |
5f5c8ee5 GM |
117 | /*********************************************************************** |
118 | Debugging | |
119 | ***********************************************************************/ | |
120 | ||
121 | /* If GLYPH_DEBUG is non-zero, additional checks are activated. Turn | |
122 | it off by defining the macro GLYPH_DEBUG to zero. */ | |
123 | ||
124 | #ifndef GLYPH_DEBUG | |
125 | #define GLYPH_DEBUG 0 | |
126 | #endif | |
127 | ||
139c65cf KS |
128 | /* If XASSERTS is non-zero, additional consistency checks are activated. |
129 | Turn it off by defining the macro XASSERTS to zero. */ | |
130 | ||
131 | #ifndef XASSERTS | |
132 | #define XASSERTS 0 | |
133 | #endif | |
134 | ||
5f5c8ee5 GM |
135 | /* Macros to include code only if GLYPH_DEBUG != 0. */ |
136 | ||
137 | #if GLYPH_DEBUG | |
138 | #define IF_DEBUG(X) X | |
5f5c8ee5 GM |
139 | #else |
140 | #define IF_DEBUG(X) (void) 0 | |
5f5c8ee5 GM |
141 | #endif |
142 | ||
139c65cf | 143 | #if XASSERTS |
d78f30b8 | 144 | #define xassert(X) do {if (!(X)) abort ();} while (0) |
139c65cf KS |
145 | #else |
146 | #define xassert(X) (void) 0 | |
147 | #endif | |
d78f30b8 | 148 | |
5f5c8ee5 GM |
149 | /* Macro for displaying traces of redisplay. If Emacs was compiled |
150 | with GLYPH_DEBUG != 0, the variable trace_redisplay_p can be set to | |
151 | a non-zero value in debugging sessions to activate traces. */ | |
152 | ||
153 | #if GLYPH_DEBUG | |
154 | ||
155 | extern int trace_redisplay_p; | |
156 | #include <stdio.h> | |
157 | ||
158 | #define TRACE(X) \ | |
159 | if (trace_redisplay_p) \ | |
160 | fprintf X; \ | |
161 | else \ | |
162 | (void) 0 | |
163 | ||
164 | #else /* GLYPH_DEBUG == 0 */ | |
165 | ||
166 | #define TRACE(X) (void) 0 | |
167 | ||
168 | #endif /* GLYPH_DEBUG == 0 */ | |
169 | ||
177c0ea7 | 170 | |
5f5c8ee5 GM |
171 | \f |
172 | /*********************************************************************** | |
173 | Text positions | |
174 | ***********************************************************************/ | |
175 | ||
176 | /* Starting with Emacs 20.3, characters from strings and buffers have | |
177 | both a character and a byte position associated with them. The | |
178 | following structure holds such a pair of positions. */ | |
177c0ea7 | 179 | |
5f5c8ee5 GM |
180 | struct text_pos |
181 | { | |
182 | /* Character position. */ | |
05fe33ff | 183 | EMACS_INT charpos; |
5f5c8ee5 GM |
184 | |
185 | /* Corresponding byte position. */ | |
05fe33ff | 186 | EMACS_INT bytepos; |
5f5c8ee5 GM |
187 | }; |
188 | ||
189 | /* Access character and byte position of POS in a functional form. */ | |
190 | ||
191 | #define BYTEPOS(POS) (POS).bytepos | |
192 | #define CHARPOS(POS) (POS).charpos | |
193 | ||
194 | /* Set character position of POS to CHARPOS, byte position to BYTEPOS. */ | |
195 | ||
196 | #define SET_TEXT_POS(POS, CHARPOS, BYTEPOS) \ | |
197 | ((POS).charpos = (CHARPOS), (POS).bytepos = BYTEPOS) | |
198 | ||
199 | /* Increment text position POS. */ | |
200 | ||
7bed37e4 | 201 | #define INC_TEXT_POS(POS, MULTIBYTE_P) \ |
5f5c8ee5 GM |
202 | do \ |
203 | { \ | |
204 | ++(POS).charpos; \ | |
7bed37e4 GM |
205 | if (MULTIBYTE_P) \ |
206 | INC_POS ((POS).bytepos); \ | |
207 | else \ | |
208 | ++(POS).bytepos; \ | |
5f5c8ee5 GM |
209 | } \ |
210 | while (0) | |
211 | ||
212 | /* Decrement text position POS. */ | |
213 | ||
7bed37e4 | 214 | #define DEC_TEXT_POS(POS, MULTIBYTE_P) \ |
5f5c8ee5 GM |
215 | do \ |
216 | { \ | |
217 | --(POS).charpos; \ | |
7bed37e4 GM |
218 | if (MULTIBYTE_P) \ |
219 | DEC_POS ((POS).bytepos); \ | |
220 | else \ | |
221 | --(POS).bytepos; \ | |
5f5c8ee5 GM |
222 | } \ |
223 | while (0) | |
224 | ||
225 | /* Set text position POS from marker MARKER. */ | |
226 | ||
227 | #define SET_TEXT_POS_FROM_MARKER(POS, MARKER) \ | |
228 | (CHARPOS (POS) = marker_position ((MARKER)), \ | |
229 | BYTEPOS (POS) = marker_byte_position ((MARKER))) | |
230 | ||
231 | /* Set marker MARKER from text position POS. */ | |
232 | ||
233 | #define SET_MARKER_FROM_TEXT_POS(MARKER, POS) \ | |
234 | set_marker_both ((MARKER), Qnil, CHARPOS ((POS)), BYTEPOS ((POS))) | |
177c0ea7 | 235 | |
5f5c8ee5 GM |
236 | /* Value is non-zero if character and byte positions of POS1 and POS2 |
237 | are equal. */ | |
238 | ||
239 | #define TEXT_POS_EQUAL_P(POS1, POS2) \ | |
240 | ((POS1).charpos == (POS2).charpos \ | |
241 | && (POS1).bytepos == (POS2).bytepos) | |
242 | ||
243 | /* When rendering glyphs, redisplay scans string or buffer text, | |
244 | overlay strings in that text, and does display table or control | |
245 | character translations. The following structure captures a | |
246 | position taking all this into account. */ | |
247 | ||
248 | struct display_pos | |
249 | { | |
250 | /* Buffer or string position. */ | |
251 | struct text_pos pos; | |
252 | ||
253 | /* If this is a position in an overlay string, overlay_string_index | |
254 | is the index of that overlay string in the sequence of overlay | |
255 | strings at `pos' in the order redisplay processes them. A value | |
256 | < 0 means that this is not a position in an overlay string. */ | |
257 | int overlay_string_index; | |
258 | ||
259 | /* If this is a position in an overlay string, string_pos is the | |
260 | position within that string. */ | |
261 | struct text_pos string_pos; | |
262 | ||
263 | /* If the character at the position above is a control character or | |
264 | has a display table entry, dpvec_index is an index in the display | |
265 | table or control character translation of that character. A | |
266 | value < 0 means this is not a position in such a translation. */ | |
267 | int dpvec_index; | |
268 | }; | |
269 | ||
270 | ||
271 | \f | |
272 | /*********************************************************************** | |
273 | Glyphs | |
274 | ***********************************************************************/ | |
275 | ||
276 | /* Enumeration of glyph types. Glyph structures contain a type field | |
277 | containing one of the enumerators defined here. */ | |
278 | ||
279 | enum glyph_type | |
280 | { | |
281 | /* Glyph describes a character. */ | |
177c0ea7 | 282 | CHAR_GLYPH, |
5f5c8ee5 | 283 | |
a88c7fcd | 284 | /* Glyph describes a static composition. */ |
a90fbbf6 KH |
285 | COMPOSITE_GLYPH, |
286 | ||
b2cca856 KH |
287 | /* Glyph describes a glyphless character. */ |
288 | GLYPHLESS_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 | ||
0633d52c KS |
298 | /* Structure describing how to use partial glyphs (images slicing) */ |
299 | ||
300 | struct glyph_slice | |
301 | { | |
302 | unsigned x : 16; | |
303 | unsigned y : 16; | |
304 | unsigned width : 16; | |
305 | unsigned height : 16; | |
306 | }; | |
307 | ||
308 | ||
827503c6 GM |
309 | /* Glyphs. |
310 | ||
311 | Be extra careful when changing this structure! Esp. make sure that | |
d5cc60b8 | 312 | functions producing glyphs, like append_glyph, fill ALL of the |
827503c6 GM |
313 | glyph structure, and that GLYPH_EQUAL_P compares all |
314 | display-relevant members of glyphs (not to imply that these are the | |
315 | only things to check when you add a member). */ | |
5f5c8ee5 GM |
316 | |
317 | struct glyph | |
318 | { | |
319 | /* Position from which this glyph was drawn. If `object' below is a | |
320 | Lisp string, this is a position in that string. If it is a | |
321 | buffer, this is a position in that buffer. A value of -1 | |
322 | together with a null object means glyph is a truncation glyph at | |
323 | the start of a row. */ | |
05fe33ff | 324 | EMACS_INT charpos; |
5f5c8ee5 GM |
325 | |
326 | /* Lisp object source of this glyph. Currently either a buffer or | |
177c0ea7 | 327 | a string, if the glyph was produced from characters which came from |
f920e581 GM |
328 | a buffer or a string; or 0 if the glyph was inserted by redisplay |
329 | for its own purposes such as padding. */ | |
5f5c8ee5 GM |
330 | Lisp_Object object; |
331 | ||
332 | /* Width in pixels. */ | |
333 | short pixel_width; | |
334 | ||
6b61353c KH |
335 | /* Ascent and descent in pixels. */ |
336 | short ascent, descent; | |
337 | ||
5f5c8ee5 GM |
338 | /* Vertical offset. If < 0, the glyph is displayed raised, if > 0 |
339 | the glyph is displayed lowered. */ | |
340 | short voffset; | |
341 | ||
342 | /* Which kind of glyph this is---character, image etc. Value | |
343 | should be an enumerator of type enum glyph_type. */ | |
b2cca856 | 344 | unsigned type : 3; |
5f5c8ee5 GM |
345 | |
346 | /* 1 means this glyph was produced from multibyte text. Zero | |
347 | means it was produced from unibyte text, i.e. charsets aren't | |
348 | applicable, and encoding is not performed. */ | |
349 | unsigned multibyte_p : 1; | |
350 | ||
351 | /* Non-zero means draw a box line at the left or right side of this | |
352 | glyph. This is part of the implementation of the face attribute | |
353 | `:box'. */ | |
354 | unsigned left_box_line_p : 1; | |
355 | unsigned right_box_line_p : 1; | |
356 | ||
2febf6e0 GM |
357 | /* Non-zero means this glyph's physical ascent or descent is greater |
358 | than its logical ascent/descent, i.e. it may potentially overlap | |
359 | glyphs above or below it. */ | |
360 | unsigned overlaps_vertically_p : 1; | |
361 | ||
ae185452 KH |
362 | /* For terminal frames, 1 means glyph is a padding glyph. Padding |
363 | glyphs are used for characters whose visual shape consists of | |
364 | more than one glyph (e.g. Asian characters). All but the first | |
365 | glyph of such a glyph sequence have the padding_p flag set. This | |
366 | flag is used only to minimize code changes. A better way would | |
367 | probably be to use the width field of glyphs to express padding. | |
368 | ||
369 | For graphic frames, 1 means the pixel width of the glyph in a | |
370 | font is 0, but 1-pixel is padded on displaying for correct cursor | |
371 | displaying. The member `pixel_width' above is set to 1. */ | |
3305fc6a KH |
372 | unsigned padding_p : 1; |
373 | ||
0eb025fb EZ |
374 | /* 1 means the actual glyph is not available, draw using `struct |
375 | glyphless' below instead. This can happen when a font couldn't | |
376 | be loaded, or a character doesn't have a glyph in a font. */ | |
b3091a23 KH |
377 | unsigned glyph_not_available_p : 1; |
378 | ||
c4f4682b MB |
379 | /* Non-zero means don't display cursor here. */ |
380 | unsigned avoid_cursor_p : 1; | |
381 | ||
e69a9370 | 382 | /* Resolved bidirectional level of this character [0..63]. */ |
29e3d8d1 | 383 | unsigned resolved_level : 5; |
5e65aec0 EZ |
384 | |
385 | /* Resolved bidirectional type of this character, see enum | |
29e3d8d1 EZ |
386 | bidi_type_t below. Note that according to UAX#9, only some |
387 | values (STRONG_L, STRONG_R, WEAK_AN, WEAK_EN, WEAK_BN, and | |
388 | NEUTRAL_B) can appear in the resolved type, so we only reserve | |
389 | space for those that can. */ | |
390 | unsigned bidi_type : 3; | |
5e65aec0 | 391 | |
c4f4682b | 392 | #define FACE_ID_BITS 20 |
6b61353c | 393 | |
c68b9c2f RS |
394 | /* Face of the glyph. This is a realized face ID, |
395 | an index in the face cache of the frame. */ | |
6b61353c | 396 | unsigned face_id : FACE_ID_BITS; |
3305fc6a | 397 | |
d5cc60b8 | 398 | /* Type of font used to display the character glyph. May be used to |
b40b05b6 | 399 | determine which set of functions to use to obtain font metrics |
d5cc60b8 KS |
400 | for the glyph. On W32, value should be an enumerator of the type |
401 | w32_char_font_type. Otherwise it equals FONT_TYPE_UNKNOWN. */ | |
402 | unsigned font_type : 3; | |
b40b05b6 | 403 | |
4be9765d KH |
404 | /* A union of sub-structures for different glyph types. */ |
405 | union | |
406 | { | |
407 | /* Metrics of a partial glyph of an image (type == IMAGE_GLYPH). */ | |
408 | struct glyph_slice img; | |
409 | /* Start and end indices of glyphs of a graphme cluster of a | |
410 | composition (type == COMPOSITE_GLYPH). */ | |
411 | struct { int from, to; } cmp; | |
b2cca856 KH |
412 | /* Pixel offsets for upper and lower part of the acronym. */ |
413 | struct { | |
414 | short upper_xoff, upper_yoff; | |
415 | short lower_xoff, lower_yoff; | |
416 | } glyphless; | |
4be9765d | 417 | } slice; |
0633d52c | 418 | |
5f5c8ee5 GM |
419 | /* A union of sub-structures for different glyph types. */ |
420 | union | |
421 | { | |
3305fc6a KH |
422 | /* Character code for character glyphs (type == CHAR_GLYPH). */ |
423 | unsigned ch; | |
5f5c8ee5 | 424 | |
4be9765d | 425 | /* Sub-structures for type == COMPOSITE_GLYPH. */ |
a88c7fcd KH |
426 | struct |
427 | { | |
428 | /* Flag to tell if the composition is automatic or not. */ | |
429 | unsigned automatic : 1; | |
430 | /* ID of the composition. */ | |
4be9765d | 431 | unsigned id : 31; |
a88c7fcd | 432 | } cmp; |
a90fbbf6 | 433 | |
3305fc6a KH |
434 | /* Image ID for image glyphs (type == IMAGE_GLYPH). */ |
435 | unsigned img_id; | |
5f5c8ee5 GM |
436 | |
437 | /* Sub-structure for type == STRETCH_GLYPH. */ | |
438 | struct | |
439 | { | |
440 | /* The height of the glyph. */ | |
3305fc6a | 441 | unsigned height : 16; |
5f5c8ee5 GM |
442 | |
443 | /* The ascent of the glyph. */ | |
3305fc6a | 444 | unsigned ascent : 16; |
5f5c8ee5 GM |
445 | } |
446 | stretch; | |
177c0ea7 | 447 | |
b2cca856 KH |
448 | /* Sub-stretch for type == GLYPHLESS_GLYPH. */ |
449 | struct | |
450 | { | |
451 | /* Value is an enum of the type glyphless_display_method. */ | |
452 | unsigned method : 2; | |
453 | /* 1 iff this glyph is for a character of no font. */ | |
454 | unsigned for_no_font : 1; | |
455 | /* Length of acronym or hexadecimal code string (at most 8). */ | |
456 | unsigned len : 4; | |
457 | /* Character to display. Actually we need only 22 bits. */ | |
458 | unsigned ch : 26; | |
459 | } glyphless; | |
460 | ||
5f5c8ee5 GM |
461 | /* Used to compare all bit-fields above in one step. */ |
462 | unsigned val; | |
463 | } u; | |
464 | }; | |
465 | ||
466 | ||
d5cc60b8 KS |
467 | /* Default value of the glyph font_type field. */ |
468 | ||
469 | #define FONT_TYPE_UNKNOWN 0 | |
470 | ||
5f5c8ee5 GM |
471 | /* Is GLYPH a space? */ |
472 | ||
473 | #define CHAR_GLYPH_SPACE_P(GLYPH) \ | |
98329671 | 474 | ((GLYPH).u.ch == SPACEGLYPH && (GLYPH).face_id == DEFAULT_FACE_ID) |
5f5c8ee5 | 475 | |
4be9765d KH |
476 | /* Are glyph slices of glyphs *X and *Y equal? It assumes that both |
477 | glyphs have the same type. | |
478 | ||
479 | Note: for composition glyphs, we don't have to compare slice.cmp.to | |
480 | because they should be the same if and only if slice.cmp.from are | |
481 | the same. */ | |
482 | ||
483 | #define GLYPH_SLICE_EQUAL_P(X, Y) \ | |
484 | ((X)->type == IMAGE_GLYPH \ | |
485 | ? ((X)->slice.img.x == (Y)->slice.img.x \ | |
486 | && (X)->slice.img.y == (Y)->slice.img.y \ | |
487 | && (X)->slice.img.width == (Y)->slice.img.width \ | |
488 | && (X)->slice.img.height == (Y)->slice.img.height) \ | |
489 | : ((X)->type != COMPOSITE_GLYPH \ | |
490 | || (X)->slice.cmp.from == (Y)->slice.cmp.from)) | |
0633d52c | 491 | |
827503c6 | 492 | /* Are glyphs *X and *Y displayed equal? */ |
177c0ea7 | 493 | |
5f5c8ee5 GM |
494 | #define GLYPH_EQUAL_P(X, Y) \ |
495 | ((X)->type == (Y)->type \ | |
496 | && (X)->u.val == (Y)->u.val \ | |
0633d52c | 497 | && GLYPH_SLICE_EQUAL_P (X, Y) \ |
3305fc6a KH |
498 | && (X)->face_id == (Y)->face_id \ |
499 | && (X)->padding_p == (Y)->padding_p \ | |
5f5c8ee5 GM |
500 | && (X)->left_box_line_p == (Y)->left_box_line_p \ |
501 | && (X)->right_box_line_p == (Y)->right_box_line_p \ | |
726950c4 GM |
502 | && (X)->voffset == (Y)->voffset \ |
503 | && (X)->pixel_width == (Y)->pixel_width) | |
5f5c8ee5 | 504 | |
3305fc6a KH |
505 | /* Are character codes, faces, padding_ps of glyphs *X and *Y equal? */ |
506 | ||
507 | #define GLYPH_CHAR_AND_FACE_EQUAL_P(X, Y) \ | |
508 | ((X)->u.ch == (Y)->u.ch \ | |
509 | && (X)->face_id == (Y)->face_id \ | |
510 | && (X)->padding_p == (Y)->padding_p) | |
511 | ||
5f5c8ee5 GM |
512 | /* Fill a character glyph GLYPH. CODE, FACE_ID, PADDING_P correspond |
513 | to the bits defined for the typedef `GLYPH' in lisp.h. */ | |
177c0ea7 | 514 | |
5f5c8ee5 GM |
515 | #define SET_CHAR_GLYPH(GLYPH, CODE, FACE_ID, PADDING_P) \ |
516 | do \ | |
517 | { \ | |
3305fc6a KH |
518 | (GLYPH).u.ch = (CODE); \ |
519 | (GLYPH).face_id = (FACE_ID); \ | |
520 | (GLYPH).padding_p = (PADDING_P); \ | |
5f5c8ee5 GM |
521 | } \ |
522 | while (0) | |
523 | ||
524 | /* Fill a character type glyph GLYPH from a glyph typedef FROM as | |
525 | defined in lisp.h. */ | |
177c0ea7 | 526 | |
5f5c8ee5 GM |
527 | #define SET_CHAR_GLYPH_FROM_GLYPH(GLYPH, FROM) \ |
528 | SET_CHAR_GLYPH ((GLYPH), \ | |
652df850 KS |
529 | GLYPH_CHAR ((FROM)), \ |
530 | GLYPH_FACE ((FROM)), \ | |
3305fc6a | 531 | 0) |
5f5c8ee5 | 532 | |
3305fc6a KH |
533 | /* Construct a glyph code from a character glyph GLYPH. If the |
534 | character is multibyte, return -1 as we can't use glyph table for a | |
54bff0bd | 535 | multibyte character. */ |
177c0ea7 | 536 | |
652df850 KS |
537 | #define SET_GLYPH_FROM_CHAR_GLYPH(G, GLYPH) \ |
538 | do \ | |
539 | { \ | |
540 | if ((GLYPH).u.ch < 256) \ | |
541 | SET_GLYPH ((G), (GLYPH).u.ch, ((GLYPH).face_id)); \ | |
542 | else \ | |
543 | SET_GLYPH ((G), -1, 0); \ | |
544 | } \ | |
545 | while (0) | |
546 | ||
547 | #define GLYPH_INVALID_P(GLYPH) (GLYPH_CHAR (GLYPH) < 0) | |
5f5c8ee5 GM |
548 | |
549 | /* Is GLYPH a padding glyph? */ | |
177c0ea7 | 550 | |
3305fc6a | 551 | #define CHAR_GLYPH_PADDING_P(GLYPH) (GLYPH).padding_p |
5f5c8ee5 GM |
552 | |
553 | ||
554 | ||
555 | \f | |
556 | /*********************************************************************** | |
557 | Glyph Pools | |
558 | ***********************************************************************/ | |
559 | ||
560 | /* Glyph Pool. | |
561 | ||
562 | Glyph memory for frame-based redisplay is allocated from the heap | |
563 | in one vector kept in a glyph pool structure which is stored with | |
564 | the frame. The size of the vector is made large enough to cover | |
565 | all windows on the frame. | |
566 | ||
567 | Both frame and window glyph matrices reference memory from a glyph | |
568 | pool in frame-based redisplay. | |
569 | ||
570 | In window-based redisplay, no glyphs pools exist; windows allocate | |
571 | and free their glyph memory themselves. */ | |
572 | ||
573 | struct glyph_pool | |
574 | { | |
575 | /* Vector of glyphs allocated from the heap. */ | |
576 | struct glyph *glyphs; | |
577 | ||
578 | /* Allocated size of `glyphs'. */ | |
579 | int nglyphs; | |
580 | ||
581 | /* Number of rows and columns in a matrix. */ | |
582 | int nrows, ncolumns; | |
583 | }; | |
584 | ||
585 | ||
586 | \f | |
587 | /*********************************************************************** | |
588 | Glyph Matrix | |
589 | ***********************************************************************/ | |
590 | ||
591 | /* Glyph Matrix. | |
592 | ||
593 | Three kinds of glyph matrices exist: | |
594 | ||
595 | 1. Frame glyph matrices. These are used for terminal frames whose | |
596 | redisplay needs a view of the whole screen due to limited terminal | |
597 | capabilities. Frame matrices are used only in the update phase | |
598 | of redisplay. They are built in update_frame and not used after | |
599 | the update has been performed. | |
600 | ||
601 | 2. Window glyph matrices on frames having frame glyph matrices. | |
602 | Such matrices are sub-matrices of their corresponding frame matrix, | |
603 | i.e. frame glyph matrices and window glyph matrices share the same | |
604 | glyph memory which is allocated in form of a glyph_pool structure. | |
605 | Glyph rows in such a window matrix are slices of frame matrix rows. | |
606 | ||
607 | 2. Free-standing window glyph matrices managing their own glyph | |
608 | storage. This form is used in window-based redisplay which | |
609 | includes variable width and height fonts etc. | |
610 | ||
611 | The size of a window's row vector depends on the height of fonts | |
612 | defined on its frame. It is chosen so that the vector is large | |
613 | enough to describe all lines in a window when it is displayed in | |
614 | the smallest possible character size. When new fonts are loaded, | |
615 | or window sizes change, the row vector is adjusted accordingly. */ | |
616 | ||
617 | struct glyph_matrix | |
618 | { | |
619 | /* The pool from which glyph memory is allocated, if any. This is | |
620 | null for frame matrices and for window matrices managing their | |
621 | own storage. */ | |
622 | struct glyph_pool *pool; | |
623 | ||
624 | /* Vector of glyph row structures. The row at nrows - 1 is reserved | |
625 | for the mode line. */ | |
626 | struct glyph_row *rows; | |
627 | ||
628 | /* Number of elements allocated for the vector rows above. */ | |
629 | int rows_allocated; | |
630 | ||
631 | /* The number of rows used by the window if all lines were displayed | |
632 | with the smallest possible character height. */ | |
633 | int nrows; | |
634 | ||
635 | /* Origin within the frame matrix if this is a window matrix on a | |
636 | frame having a frame matrix. Both values are zero for | |
637 | window-based redisplay. */ | |
638 | int matrix_x, matrix_y; | |
639 | ||
640 | /* Width and height of the matrix in columns and rows. */ | |
641 | int matrix_w, matrix_h; | |
642 | ||
6df72db9 | 643 | /* If this structure describes a window matrix of window W, |
87388f9d KS |
644 | window_left_col is the value of W->left_col, window_top_line the |
645 | value of W->top_line, window_height and window_width are width and | |
646 | height of W, as returned by window_box, and window_vscroll is the | |
647 | value of W->vscroll at the time the matrix was last adjusted. | |
648 | Only set for window-based redisplay. */ | |
649 | int window_left_col, window_top_line; | |
650 | int window_height, window_width; | |
651 | int window_vscroll; | |
5f5c8ee5 GM |
652 | |
653 | /* Number of glyphs reserved for left and right marginal areas when | |
654 | the matrix was last adjusted. */ | |
655 | int left_margin_glyphs, right_margin_glyphs; | |
656 | ||
657 | /* Flag indicating that scrolling should not be tried in | |
658 | update_window. This flag is set by functions like try_window_id | |
659 | which do their own scrolling. */ | |
660 | unsigned no_scrolling_p : 1; | |
661 | ||
662 | /* Non-zero means window displayed in this matrix has a top mode | |
663 | line. */ | |
045dee35 | 664 | unsigned header_line_p : 1; |
5f5c8ee5 GM |
665 | |
666 | #ifdef GLYPH_DEBUG | |
667 | /* A string identifying the method used to display the matrix. */ | |
668 | char method[512]; | |
669 | #endif | |
2201e367 | 670 | |
a36d22d2 GM |
671 | /* The buffer this matrix displays. Set in |
672 | mark_window_display_accurate_1. */ | |
2201e367 GM |
673 | struct buffer *buffer; |
674 | ||
a36d22d2 GM |
675 | /* Values of BEGV and ZV as of last redisplay. Set in |
676 | mark_window_display_accurate_1. */ | |
2201e367 | 677 | int begv, zv; |
5f5c8ee5 GM |
678 | }; |
679 | ||
680 | ||
681 | /* Check that glyph pointers stored in glyph rows of MATRIX are okay. | |
682 | This aborts if any pointer is found twice. */ | |
683 | ||
684 | #if GLYPH_DEBUG | |
383e0970 | 685 | void check_matrix_pointer_lossage (struct glyph_matrix *); |
5f5c8ee5 GM |
686 | #define CHECK_MATRIX(MATRIX) check_matrix_pointer_lossage ((MATRIX)) |
687 | #else | |
688 | #define CHECK_MATRIX(MATRIX) (void) 0 | |
689 | #endif | |
690 | ||
691 | ||
692 | \f | |
693 | /*********************************************************************** | |
694 | Glyph Rows | |
695 | ***********************************************************************/ | |
696 | ||
697 | /* Area in window glyph matrix. If values are added or removed, the | |
698 | function mark_object in alloc.c has to be changed. */ | |
699 | ||
700 | enum glyph_row_area | |
701 | { | |
702 | LEFT_MARGIN_AREA, | |
703 | TEXT_AREA, | |
704 | RIGHT_MARGIN_AREA, | |
705 | LAST_AREA | |
706 | }; | |
707 | ||
708 | ||
709 | /* Rows of glyphs in a windows or frame glyph matrix. | |
710 | ||
711 | Each row is partitioned into three areas. The start and end of | |
712 | each area is recorded in a pointer as shown below. | |
177c0ea7 | 713 | |
5f5c8ee5 GM |
714 | +--------------------+-------------+---------------------+ |
715 | | left margin area | text area | right margin area | | |
716 | +--------------------+-------------+---------------------+ | |
717 | | | | | | |
718 | glyphs[LEFT_MARGIN_AREA] glyphs[RIGHT_MARGIN_AREA] | |
719 | | | | |
720 | glyphs[TEXT_AREA] | | |
177c0ea7 | 721 | glyphs[LAST_AREA] |
5f5c8ee5 GM |
722 | |
723 | Rows in frame matrices reference glyph memory allocated in a frame | |
724 | glyph pool (see the description of struct glyph_pool). Rows in | |
725 | window matrices on frames having frame matrices reference slices of | |
726 | the glyphs of corresponding rows in the frame matrix. | |
177c0ea7 | 727 | |
5f5c8ee5 GM |
728 | Rows in window matrices on frames having no frame matrices point to |
729 | glyphs allocated from the heap via xmalloc; | |
730 | glyphs[LEFT_MARGIN_AREA] is the start address of the allocated | |
731 | glyph structure array. */ | |
732 | ||
733 | struct glyph_row | |
734 | { | |
735 | /* Pointers to beginnings of areas. The end of an area A is found at | |
736 | A + 1 in the vector. The last element of the vector is the end | |
737 | of the whole row. | |
738 | ||
739 | Kludge alert: Even if used[TEXT_AREA] == 0, glyphs[TEXT_AREA][0]'s | |
740 | position field is used. It is -1 if this row does not correspond | |
741 | to any text; it is some buffer position if the row corresponds to | |
742 | an empty display line that displays a line end. This is what old | |
743 | redisplay used to do. (Except in code for terminal frames, this | |
54bff0bd | 744 | kludge is no longer used, I believe. --gerd). |
5f5c8ee5 GM |
745 | |
746 | See also start, end, displays_text_p and ends_at_zv_p for cleaner | |
747 | ways to do it. The special meaning of positions 0 and -1 will be | |
748 | removed some day, so don't use it in new code. */ | |
749 | struct glyph *glyphs[1 + LAST_AREA]; | |
750 | ||
751 | /* Number of glyphs actually filled in areas. */ | |
752 | short used[LAST_AREA]; | |
753 | ||
754 | /* Window-relative x and y-position of the top-left corner of this | |
1ea40aa2 | 755 | row. If y < 0, this means that eabs (y) pixels of the row are |
5f5c8ee5 | 756 | invisible because it is partially visible at the top of a window. |
1ea40aa2 | 757 | If x < 0, this means that eabs (x) pixels of the first glyph of |
5f5c8ee5 GM |
758 | the text area of the row are invisible because the glyph is |
759 | partially visible. */ | |
760 | int x, y; | |
761 | ||
762 | /* Width of the row in pixels without taking face extension at the | |
6332ca8a GM |
763 | end of the row into account, and without counting truncation |
764 | and continuation glyphs at the end of a row on ttys. */ | |
5f5c8ee5 GM |
765 | int pixel_width; |
766 | ||
2febf6e0 GM |
767 | /* Logical ascent/height of this line. The value of ascent is zero |
768 | and height is 1 on terminal frames. */ | |
5f5c8ee5 GM |
769 | int ascent, height; |
770 | ||
2febf6e0 GM |
771 | /* Physical ascent/height of this line. If max_ascent > ascent, |
772 | this line overlaps the line above it on the display. Otherwise, | |
773 | if max_height > height, this line overlaps the line beneath it. */ | |
774 | int phys_ascent, phys_height; | |
775 | ||
5f5c8ee5 GM |
776 | /* Portion of row that is visible. Partially visible rows may be |
777 | found at the top and bottom of a window. This is 1 for tty | |
778 | frames. It may be < 0 in case of completely invisible rows. */ | |
779 | int visible_height; | |
780 | ||
db0c5a7d KS |
781 | /* Extra line spacing added after this row. Do not consider this |
782 | in last row when checking if row is fully visible. */ | |
783 | int extra_line_spacing; | |
784 | ||
5f5c8ee5 GM |
785 | /* Hash code. This hash code is available as soon as the row |
786 | is constructed, i.e. after a call to display_line. */ | |
787 | unsigned hash; | |
788 | ||
789 | /* First position in this row. This is the text position, including | |
790 | overlay position information etc, where the display of this row | |
d36fe237 EZ |
791 | started, and can thus be less than the position of the first |
792 | glyph (e.g. due to invisible text or horizontal scrolling). | |
793 | BIDI Note: In R2L rows, that have its reversed_p flag set, this | |
794 | position is at or beyond the right edge of the row. */ | |
5f5c8ee5 GM |
795 | struct display_pos start; |
796 | ||
797 | /* Text position at the end of this row. This is the position after | |
798 | the last glyph on this row. It can be greater than the last | |
d36fe237 EZ |
799 | glyph position + 1, due to a newline that ends the line, |
800 | truncation, invisible text etc. In an up-to-date display, this | |
801 | should always be equal to the start position of the next row. | |
802 | BIDI Note: In R2L rows, this position is at or beyond the left | |
803 | edge of the row. */ | |
5f5c8ee5 GM |
804 | struct display_pos end; |
805 | ||
d36fe237 EZ |
806 | /* The smallest and the largest buffer positions that contributed to |
807 | glyphs in this row. Note that due to bidi reordering, these are | |
808 | in general different from the text positions stored in `start' | |
809 | and `end' members above, and also different from the buffer | |
810 | positions recorded in the glyphs displayed the leftmost and | |
811 | rightmost on the screen. */ | |
812 | struct text_pos minpos, maxpos; | |
813 | ||
e937c046 KS |
814 | /* Non-zero means the overlay arrow bitmap is on this line. |
815 | -1 means use default overlay arrow bitmap, else | |
816 | it specifies actual fringe bitmap number. */ | |
817 | int overlay_arrow_bitmap; | |
818 | ||
6b61353c KH |
819 | /* Left fringe bitmap number (enum fringe_bitmap_type). */ |
820 | unsigned left_user_fringe_bitmap : FRINGE_ID_BITS; | |
821 | ||
6b61353c KH |
822 | /* Right fringe bitmap number (enum fringe_bitmap_type). */ |
823 | unsigned right_user_fringe_bitmap : FRINGE_ID_BITS; | |
824 | ||
6b61353c KH |
825 | /* Left fringe bitmap number (enum fringe_bitmap_type). */ |
826 | unsigned left_fringe_bitmap : FRINGE_ID_BITS; | |
827 | ||
6b61353c KH |
828 | /* Right fringe bitmap number (enum fringe_bitmap_type). */ |
829 | unsigned right_fringe_bitmap : FRINGE_ID_BITS; | |
830 | ||
b3b08f03 KS |
831 | /* Face of the left fringe glyph. */ |
832 | unsigned left_user_fringe_face_id : FACE_ID_BITS; | |
833 | ||
834 | /* Face of the right fringe glyph. */ | |
835 | unsigned right_user_fringe_face_id : FACE_ID_BITS; | |
836 | ||
837 | /* Face of the left fringe glyph. */ | |
838 | unsigned left_fringe_face_id : FACE_ID_BITS; | |
839 | ||
6b61353c KH |
840 | /* Face of the right fringe glyph. */ |
841 | unsigned right_fringe_face_id : FACE_ID_BITS; | |
842 | ||
5a874e95 YM |
843 | /* Vertical offset of the left fringe bitmap. */ |
844 | signed left_fringe_offset : FRINGE_HEIGHT_BITS; | |
845 | ||
846 | /* Vertical offset of the right fringe bitmap. */ | |
847 | signed right_fringe_offset : FRINGE_HEIGHT_BITS; | |
848 | ||
6b61353c KH |
849 | /* 1 means that we must draw the bitmaps of this row. */ |
850 | unsigned redraw_fringe_bitmaps_p : 1; | |
851 | ||
5f5c8ee5 GM |
852 | /* In a desired matrix, 1 means that this row must be updated. In a |
853 | current matrix, 0 means that the row has been invalidated, i.e. | |
854 | the row's contents do not agree with what is visible on the | |
855 | screen. */ | |
856 | unsigned enabled_p : 1; | |
857 | ||
5f5c8ee5 GM |
858 | /* 1 means row displays a text line that is truncated on the left or |
859 | right side. */ | |
860 | unsigned truncated_on_left_p : 1; | |
861 | unsigned truncated_on_right_p : 1; | |
862 | ||
5f5c8ee5 GM |
863 | /* 1 means that this row displays a continued line, i.e. it has a |
864 | continuation mark at the right side. */ | |
865 | unsigned continued_p : 1; | |
866 | ||
867 | /* 0 means that this row does not contain any text, i.e. it is | |
868 | a blank line at the window and buffer end. */ | |
869 | unsigned displays_text_p : 1; | |
870 | ||
871 | /* 1 means that this line ends at ZV. */ | |
872 | unsigned ends_at_zv_p : 1; | |
873 | ||
874 | /* 1 means the face of the last glyph in the text area is drawn to | |
875 | the right end of the window. This flag is used in | |
876 | update_text_area to optimize clearing to the end of the area. */ | |
877 | unsigned fill_line_p : 1; | |
878 | ||
879 | /* Non-zero means display a bitmap on X frames indicating that this | |
880 | line contains no text and ends in ZV. */ | |
881 | unsigned indicate_empty_line_p : 1; | |
882 | ||
883 | /* 1 means this row contains glyphs that overlap each other because | |
884 | of lbearing or rbearing. */ | |
885 | unsigned contains_overlapping_glyphs_p : 1; | |
886 | ||
54bff0bd | 887 | /* 1 means this row is as wide as the window it is displayed in, including |
afb7aabb | 888 | scroll bars, fringes, and internal borders. This also |
5f5c8ee5 GM |
889 | implies that the row doesn't have marginal areas. */ |
890 | unsigned full_width_p : 1; | |
891 | ||
54bff0bd | 892 | /* Non-zero means row is a mode or header-line. */ |
5f5c8ee5 GM |
893 | unsigned mode_line_p : 1; |
894 | ||
2febf6e0 GM |
895 | /* 1 in a current row means this row is overlapped by another row. */ |
896 | unsigned overlapped_p : 1; | |
897 | ||
666852af GM |
898 | /* 1 means this line ends in the middle of a character consisting |
899 | of more than one glyph. Some glyphs have been put in this row, | |
900 | the rest are put in rows below this one. */ | |
901 | unsigned ends_in_middle_of_char_p : 1; | |
177c0ea7 | 902 | |
666852af GM |
903 | /* 1 means this line starts in the middle of a character consisting |
904 | of more than one glyph. Some glyphs have been put in the | |
54bff0bd | 905 | previous row, the rest are put in this row. */ |
666852af GM |
906 | unsigned starts_in_middle_of_char_p : 1; |
907 | ||
2febf6e0 GM |
908 | /* 1 in a current row means this row overlaps others. */ |
909 | unsigned overlapping_p : 1; | |
910 | ||
48b509fe GM |
911 | /* 1 means some glyphs in this row are displayed in mouse-face. */ |
912 | unsigned mouse_face_p : 1; | |
913 | ||
257e3f57 GM |
914 | /* 1 means this row was ended by a newline from a string. */ |
915 | unsigned ends_in_newline_from_string_p : 1; | |
916 | ||
6b61353c KH |
917 | /* 1 means this row width is exactly the width of the window, and the |
918 | final newline character is hidden in the right fringe. */ | |
919 | unsigned exact_window_width_line_p : 1; | |
920 | ||
921 | /* 1 means this row currently shows the cursor in the right fringe. */ | |
922 | unsigned cursor_in_fringe_p : 1; | |
923 | ||
b437860a RS |
924 | /* 1 means the last glyph in the row is part of an ellipsis. */ |
925 | unsigned ends_in_ellipsis_p : 1; | |
926 | ||
6b61353c KH |
927 | /* Non-zero means display a bitmap on X frames indicating that this |
928 | the first line of the buffer. */ | |
929 | unsigned indicate_bob_p : 1; | |
930 | ||
931 | /* Non-zero means display a bitmap on X frames indicating that this | |
932 | the top line of the window, but not start of the buffer. */ | |
933 | unsigned indicate_top_line_p : 1; | |
934 | ||
935 | /* Non-zero means display a bitmap on X frames indicating that this | |
936 | the last line of the buffer. */ | |
937 | unsigned indicate_eob_p : 1; | |
938 | ||
939 | /* Non-zero means display a bitmap on X frames indicating that this | |
940 | the bottom line of the window, but not end of the buffer. */ | |
941 | unsigned indicate_bottom_line_p : 1; | |
942 | ||
c143c213 EZ |
943 | /* Non-zero means the row was reversed to display text in a |
944 | right-to-left paragraph. */ | |
945 | unsigned reversed_p : 1; | |
946 | ||
5f5c8ee5 GM |
947 | /* Continuation lines width at the start of the row. */ |
948 | int continuation_lines_width; | |
7cd30fff | 949 | |
3e88ae62 | 950 | #ifdef HAVE_WINDOW_SYSTEM |
7cd30fff KH |
951 | /* Non-NULL means the current clipping area. This is temporarily |
952 | set while exposing a region. Coordinates are frame-relative. */ | |
953 | XRectangle *clip; | |
3e88ae62 | 954 | #endif |
5f5c8ee5 GM |
955 | }; |
956 | ||
957 | ||
958 | /* Get a pointer to row number ROW in matrix MATRIX. If GLYPH_DEBUG | |
959 | is defined to a non-zero value, the function matrix_row checks that | |
960 | we don't try to access rows that are out of bounds. */ | |
961 | ||
962 | #if GLYPH_DEBUG | |
383e0970 | 963 | struct glyph_row *matrix_row (struct glyph_matrix *, int); |
5f5c8ee5 GM |
964 | #define MATRIX_ROW(MATRIX, ROW) matrix_row ((MATRIX), (ROW)) |
965 | #else | |
966 | #define MATRIX_ROW(MATRIX, ROW) ((MATRIX)->rows + (ROW)) | |
967 | #endif | |
968 | ||
177c0ea7 | 969 | /* Return a pointer to the row reserved for the mode line in MATRIX. |
5f5c8ee5 GM |
970 | Row MATRIX->nrows - 1 is always reserved for the mode line. */ |
971 | ||
972 | #define MATRIX_MODE_LINE_ROW(MATRIX) \ | |
973 | ((MATRIX)->rows + (MATRIX)->nrows - 1) | |
974 | ||
54bff0bd | 975 | /* Return a pointer to the row reserved for the header line in MATRIX. |
5f5c8ee5 GM |
976 | This is always the first row in MATRIX because that's the only |
977 | way that works in frame-based redisplay. */ | |
978 | ||
045dee35 | 979 | #define MATRIX_HEADER_LINE_ROW(MATRIX) (MATRIX)->rows |
5f5c8ee5 GM |
980 | |
981 | /* Return a pointer to first row in MATRIX used for text display. */ | |
982 | ||
983 | #define MATRIX_FIRST_TEXT_ROW(MATRIX) \ | |
984 | ((MATRIX)->rows->mode_line_p ? (MATRIX)->rows + 1 : (MATRIX)->rows) | |
985 | ||
986 | /* Return a pointer to the first glyph in the text area of a row. | |
987 | MATRIX is the glyph matrix accessed, and ROW is the row index in | |
988 | MATRIX. */ | |
989 | ||
990 | #define MATRIX_ROW_GLYPH_START(MATRIX, ROW) \ | |
991 | (MATRIX_ROW ((MATRIX), (ROW))->glyphs[TEXT_AREA]) | |
992 | ||
993 | /* Return the number of used glyphs in the text area of a row. */ | |
177c0ea7 | 994 | |
5f5c8ee5 GM |
995 | #define MATRIX_ROW_USED(MATRIX, ROW) \ |
996 | (MATRIX_ROW ((MATRIX), (ROW))->used[TEXT_AREA]) | |
997 | ||
998 | /* Return the character/ byte position at which the display of ROW | |
9c82e145 EZ |
999 | starts. BIDI Note: this is the smallest character/byte position |
1000 | among characters in ROW, i.e. the first logical-order character | |
1001 | displayed by ROW, which is not necessarily the smallest horizontal | |
1002 | position. */ | |
177c0ea7 | 1003 | |
d36fe237 EZ |
1004 | #define MATRIX_ROW_START_CHARPOS(ROW) ((ROW)->minpos.charpos) |
1005 | #define MATRIX_ROW_START_BYTEPOS(ROW) ((ROW)->minpos.bytepos) | |
5f5c8ee5 | 1006 | |
9c82e145 EZ |
1007 | /* Return the character/ byte position at which ROW ends. BIDI Note: |
1008 | this is the largest character/byte position among characters in | |
1009 | ROW, i.e. the last logical-order character displayed by ROW, which | |
1010 | is not necessarily the largest horizontal position. */ | |
177c0ea7 | 1011 | |
d36fe237 EZ |
1012 | #define MATRIX_ROW_END_CHARPOS(ROW) ((ROW)->maxpos.charpos) |
1013 | #define MATRIX_ROW_END_BYTEPOS(ROW) ((ROW)->maxpos.bytepos) | |
5f5c8ee5 GM |
1014 | |
1015 | /* Return the vertical position of ROW in MATRIX. */ | |
177c0ea7 | 1016 | |
5f5c8ee5 GM |
1017 | #define MATRIX_ROW_VPOS(ROW, MATRIX) ((ROW) - (MATRIX)->rows) |
1018 | ||
1019 | /* Return the last glyph row + 1 in MATRIX on window W reserved for | |
1020 | text. If W has a mode line, the last row in the matrix is reserved | |
1021 | for it. */ | |
177c0ea7 | 1022 | |
5f5c8ee5 GM |
1023 | #define MATRIX_BOTTOM_TEXT_ROW(MATRIX, W) \ |
1024 | ((MATRIX)->rows \ | |
1025 | + (MATRIX)->nrows \ | |
1026 | - (WINDOW_WANTS_MODELINE_P ((W)) ? 1 : 0)) | |
1027 | ||
1028 | /* Non-zero if the face of the last glyph in ROW's text area has | |
1029 | to be drawn to the end of the text area. */ | |
177c0ea7 | 1030 | |
5f5c8ee5 GM |
1031 | #define MATRIX_ROW_EXTENDS_FACE_P(ROW) ((ROW)->fill_line_p) |
1032 | ||
1033 | /* Set and query the enabled_p flag of glyph row ROW in MATRIX. */ | |
177c0ea7 | 1034 | |
5f5c8ee5 GM |
1035 | #define SET_MATRIX_ROW_ENABLED_P(MATRIX, ROW, VALUE) \ |
1036 | (MATRIX_ROW ((MATRIX), (ROW))->enabled_p = (VALUE) != 0) | |
177c0ea7 | 1037 | |
5f5c8ee5 GM |
1038 | #define MATRIX_ROW_ENABLED_P(MATRIX, ROW) \ |
1039 | (MATRIX_ROW ((MATRIX), (ROW))->enabled_p) | |
1040 | ||
1041 | /* Non-zero if ROW displays text. Value is non-zero if the row is | |
1042 | blank but displays a line end. */ | |
177c0ea7 | 1043 | |
5f5c8ee5 GM |
1044 | #define MATRIX_ROW_DISPLAYS_TEXT_P(ROW) ((ROW)->displays_text_p) |
1045 | ||
db0c5a7d KS |
1046 | |
1047 | /* Helper macros */ | |
1048 | ||
1049 | #define MR_PARTIALLY_VISIBLE(ROW) \ | |
1050 | ((ROW)->height != (ROW)->visible_height) | |
1051 | ||
1052 | #define MR_PARTIALLY_VISIBLE_AT_TOP(W, ROW) \ | |
1053 | ((ROW)->y < WINDOW_HEADER_LINE_HEIGHT ((W))) | |
1054 | ||
1055 | #define MR_PARTIALLY_VISIBLE_AT_BOTTOM(W, ROW) \ | |
1056 | (((ROW)->y + (ROW)->height - (ROW)->extra_line_spacing) \ | |
1057 | > WINDOW_BOX_HEIGHT_NO_MODE_LINE ((W))) | |
1058 | ||
5f5c8ee5 | 1059 | /* Non-zero if ROW is not completely visible in window W. */ |
177c0ea7 | 1060 | |
db0c5a7d KS |
1061 | #define MATRIX_ROW_PARTIALLY_VISIBLE_P(W, ROW) \ |
1062 | (MR_PARTIALLY_VISIBLE ((ROW)) \ | |
1063 | && (MR_PARTIALLY_VISIBLE_AT_TOP ((W), (ROW)) \ | |
1064 | || MR_PARTIALLY_VISIBLE_AT_BOTTOM ((W), (ROW)))) | |
1065 | ||
1066 | ||
5f5c8ee5 GM |
1067 | |
1068 | /* Non-zero if ROW is partially visible at the top of window W. */ | |
177c0ea7 | 1069 | |
5f5c8ee5 | 1070 | #define MATRIX_ROW_PARTIALLY_VISIBLE_AT_TOP_P(W, ROW) \ |
db0c5a7d KS |
1071 | (MR_PARTIALLY_VISIBLE ((ROW)) \ |
1072 | && MR_PARTIALLY_VISIBLE_AT_TOP ((W), (ROW))) | |
5f5c8ee5 GM |
1073 | |
1074 | /* Non-zero if ROW is partially visible at the bottom of window W. */ | |
177c0ea7 | 1075 | |
db0c5a7d KS |
1076 | #define MATRIX_ROW_PARTIALLY_VISIBLE_AT_BOTTOM_P(W, ROW) \ |
1077 | (MR_PARTIALLY_VISIBLE ((ROW)) \ | |
1078 | && MR_PARTIALLY_VISIBLE_AT_BOTTOM ((W), (ROW))) | |
5f5c8ee5 GM |
1079 | |
1080 | /* Return the bottom Y + 1 of ROW. */ | |
177c0ea7 | 1081 | |
5f5c8ee5 GM |
1082 | #define MATRIX_ROW_BOTTOM_Y(ROW) ((ROW)->y + (ROW)->height) |
1083 | ||
1084 | /* Is ROW the last visible one in the display described by the | |
1085 | iterator structure pointed to by IT?. */ | |
177c0ea7 | 1086 | |
5f5c8ee5 GM |
1087 | #define MATRIX_ROW_LAST_VISIBLE_P(ROW, IT) \ |
1088 | (MATRIX_ROW_BOTTOM_Y ((ROW)) >= (IT)->last_visible_y) | |
1089 | ||
1090 | /* Non-zero if ROW displays a continuation line. */ | |
1091 | ||
1092 | #define MATRIX_ROW_CONTINUATION_LINE_P(ROW) \ | |
1093 | ((ROW)->continuation_lines_width > 0) | |
1094 | ||
1095 | /* Non-zero if ROW ends in the middle of a character. This is the | |
1096 | case for continued lines showing only part of a display table entry | |
1097 | or a control char, or an overlay string. */ | |
1098 | ||
1099 | #define MATRIX_ROW_ENDS_IN_MIDDLE_OF_CHAR_P(ROW) \ | |
e6fb381c | 1100 | ((ROW)->end.dpvec_index > 0 \ |
666852af GM |
1101 | || (ROW)->end.overlay_string_index >= 0 \ |
1102 | || (ROW)->ends_in_middle_of_char_p) | |
5f5c8ee5 GM |
1103 | |
1104 | /* Non-zero if ROW ends in the middle of an overlay string. */ | |
1105 | ||
1106 | #define MATRIX_ROW_ENDS_IN_OVERLAY_STRING_P(ROW) \ | |
1107 | ((ROW)->end.overlay_string_index >= 0) | |
1108 | ||
1109 | /* Non-zero if ROW starts in the middle of a character. See above. */ | |
177c0ea7 | 1110 | |
5f5c8ee5 | 1111 | #define MATRIX_ROW_STARTS_IN_MIDDLE_OF_CHAR_P(ROW) \ |
e6fb381c | 1112 | ((ROW)->start.dpvec_index > 0 \ |
666852af | 1113 | || (ROW)->starts_in_middle_of_char_p \ |
5f5c8ee5 GM |
1114 | || ((ROW)->start.overlay_string_index >= 0 \ |
1115 | && (ROW)->start.string_pos.charpos > 0)) | |
1116 | ||
2febf6e0 GM |
1117 | /* Non-zero means ROW overlaps its predecessor. */ |
1118 | ||
1119 | #define MATRIX_ROW_OVERLAPS_PRED_P(ROW) \ | |
1120 | ((ROW)->phys_ascent > (ROW)->ascent) | |
1121 | ||
1122 | /* Non-zero means ROW overlaps its successor. */ | |
1123 | ||
1124 | #define MATRIX_ROW_OVERLAPS_SUCC_P(ROW) \ | |
1125 | ((ROW)->phys_height - (ROW)->phys_ascent \ | |
1126 | > (ROW)->height - (ROW)->ascent) | |
1127 | ||
5f5c8ee5 GM |
1128 | /* Non-zero means that fonts have been loaded since the last glyph |
1129 | matrix adjustments. The function redisplay_internal adjusts glyph | |
1130 | matrices when this flag is non-zero. */ | |
1131 | ||
1132 | extern int fonts_changed_p; | |
1133 | ||
1134 | /* A glyph for a space. */ | |
1135 | ||
1136 | extern struct glyph space_glyph; | |
1137 | ||
1138 | /* Window being updated by update_window. This is non-null as long as | |
856dd475 | 1139 | update_window has not finished, and null otherwise. */ |
5f5c8ee5 GM |
1140 | |
1141 | extern struct window *updated_window; | |
1142 | ||
1143 | /* Glyph row and area updated by update_window_line. */ | |
1144 | ||
1145 | extern struct glyph_row *updated_row; | |
1146 | extern int updated_area; | |
1147 | ||
1148 | /* Non-zero means reading single-character input with prompt so put | |
1149 | cursor on mini-buffer after the prompt. Positive means at end of | |
1150 | text in echo area; negative means at beginning of line. */ | |
1151 | ||
1152 | extern int cursor_in_echo_area; | |
1153 | ||
1154 | /* Non-zero means last display completed. Zero means it was | |
1155 | preempted. */ | |
1156 | ||
1157 | extern int display_completed; | |
1158 | ||
5f5c8ee5 GM |
1159 | /* A temporary storage area, including a row of glyphs. Initialized |
1160 | in xdisp.c. Used for various purposes, as an example see | |
855a0da7 | 1161 | get_overlay_arrow_glyph_row. */ |
5f5c8ee5 GM |
1162 | |
1163 | extern struct glyph_row scratch_glyph_row; | |
1164 | ||
1165 | ||
1166 | \f | |
d5cc60b8 KS |
1167 | /************************************************************************ |
1168 | Glyph Strings | |
1169 | ************************************************************************/ | |
1170 | ||
1171 | /* Enumeration for overriding/changing the face to use for drawing | |
d74b2553 | 1172 | glyphs in draw_glyphs. */ |
d5cc60b8 KS |
1173 | |
1174 | enum draw_glyphs_face | |
1175 | { | |
1176 | DRAW_NORMAL_TEXT, | |
1177 | DRAW_INVERSE_VIDEO, | |
1178 | DRAW_CURSOR, | |
1179 | DRAW_MOUSE_FACE, | |
1180 | DRAW_IMAGE_RAISED, | |
1181 | DRAW_IMAGE_SUNKEN | |
1182 | }; | |
1183 | ||
79fa9e0f KS |
1184 | #ifdef HAVE_WINDOW_SYSTEM |
1185 | ||
d5cc60b8 KS |
1186 | /* A sequence of glyphs to be drawn in the same face. */ |
1187 | ||
1188 | struct glyph_string | |
1189 | { | |
1190 | /* X-origin of the string. */ | |
1191 | int x; | |
1192 | ||
1193 | /* Y-origin and y-position of the base line of this string. */ | |
1194 | int y, ybase; | |
1195 | ||
1196 | /* The width of the string, not including a face extension. */ | |
1197 | int width; | |
1198 | ||
1199 | /* The width of the string, including a face extension. */ | |
1200 | int background_width; | |
1201 | ||
1202 | /* The height of this string. This is the height of the line this | |
1203 | string is drawn in, and can be different from the height of the | |
1204 | font the string is drawn in. */ | |
1205 | int height; | |
1206 | ||
1207 | /* Number of pixels this string overwrites in front of its x-origin. | |
1208 | This number is zero if the string has an lbearing >= 0; it is | |
1209 | -lbearing, if the string has an lbearing < 0. */ | |
1210 | int left_overhang; | |
1211 | ||
1212 | /* Number of pixels this string overwrites past its right-most | |
1213 | nominal x-position, i.e. x + width. Zero if the string's | |
1214 | rbearing is <= its nominal width, rbearing - width otherwise. */ | |
1215 | int right_overhang; | |
1216 | ||
1217 | /* The frame on which the glyph string is drawn. */ | |
1218 | struct frame *f; | |
1219 | ||
1220 | /* The window on which the glyph string is drawn. */ | |
1221 | struct window *w; | |
1222 | ||
1223 | /* X display and window for convenience. */ | |
1224 | Display *display; | |
1225 | Window window; | |
1226 | ||
1227 | /* The glyph row for which this string was built. It determines the | |
1228 | y-origin and height of the string. */ | |
1229 | struct glyph_row *row; | |
1230 | ||
1231 | /* The area within row. */ | |
1232 | enum glyph_row_area area; | |
1233 | ||
1234 | /* Characters to be drawn, and number of characters. */ | |
1235 | XChar2b *char2b; | |
1236 | int nchars; | |
1237 | ||
1238 | /* A face-override for drawing cursors, mouse face and similar. */ | |
1239 | enum draw_glyphs_face hl; | |
1240 | ||
1241 | /* Face in which this string is to be drawn. */ | |
1242 | struct face *face; | |
1243 | ||
1244 | /* Font in which this string is to be drawn. */ | |
93cf902a | 1245 | struct font *font; |
d5cc60b8 | 1246 | |
a88c7fcd KH |
1247 | /* Non-null means this string describes (part of) a static |
1248 | composition. */ | |
d5cc60b8 KS |
1249 | struct composition *cmp; |
1250 | ||
a88c7fcd KH |
1251 | /* If not negative, this string describes a compos. */ |
1252 | int cmp_id; | |
1253 | ||
1254 | /* Start and end glyph indices in a glyph-string. */ | |
1255 | int cmp_from, cmp_to; | |
d5cc60b8 KS |
1256 | |
1257 | /* 1 means this glyph strings face has to be drawn to the right end | |
1258 | of the window's drawing area. */ | |
1259 | unsigned extends_to_end_of_line_p : 1; | |
1260 | ||
1261 | /* 1 means the background of this string has been drawn. */ | |
1262 | unsigned background_filled_p : 1; | |
1263 | ||
1264 | /* 1 means glyph string must be drawn with 16-bit functions. */ | |
1265 | unsigned two_byte_p : 1; | |
1266 | ||
1267 | /* 1 means that the original font determined for drawing this glyph | |
1268 | string could not be loaded. The member `font' has been set to | |
1269 | the frame's default font in this case. */ | |
1270 | unsigned font_not_found_p : 1; | |
1271 | ||
1272 | /* 1 means that the face in which this glyph string is drawn has a | |
1273 | stipple pattern. */ | |
1274 | unsigned stippled_p : 1; | |
1275 | ||
10a07952 YM |
1276 | #define OVERLAPS_PRED (1 << 0) |
1277 | #define OVERLAPS_SUCC (1 << 1) | |
1278 | #define OVERLAPS_BOTH (OVERLAPS_PRED | OVERLAPS_SUCC) | |
1279 | #define OVERLAPS_ERASED_CURSOR (1 << 2) | |
1280 | /* Non-zero means only the foreground of this glyph string must be | |
1281 | drawn, and we should use the physical height of the line this | |
1282 | glyph string appears in as clip rect. If the value is | |
1283 | OVERLAPS_ERASED_CURSOR, the clip rect is restricted to the rect | |
1284 | of the erased cursor. OVERLAPS_PRED and OVERLAPS_SUCC mean we | |
1285 | draw overlaps with the preceding and the succeeding rows, | |
1286 | respectively. */ | |
1287 | unsigned for_overlaps : 3; | |
d5cc60b8 | 1288 | |
ae185452 KH |
1289 | /* 1 means that all glyphs in this glyph string has the flag |
1290 | padding_p set, and thus must be drawn one by one to have 1-pixel | |
1291 | width even though the logical width in the font is zero. */ | |
1292 | unsigned padding_p : 1; | |
1293 | ||
d5cc60b8 | 1294 | /* The GC to use for drawing this glyph string. */ |
9e2a2647 | 1295 | #if defined(HAVE_X_WINDOWS) |
d5cc60b8 KS |
1296 | GC gc; |
1297 | #endif | |
1298 | #if defined(HAVE_NTGUI) | |
1299 | XGCValues *gc; | |
1300 | HDC hdc; | |
1301 | #endif | |
1302 | ||
1303 | /* A pointer to the first glyph in the string. This glyph | |
1304 | corresponds to char2b[0]. Needed to draw rectangles if | |
1305 | font_not_found_p is 1. */ | |
1306 | struct glyph *first_glyph; | |
1307 | ||
1308 | /* Image, if any. */ | |
1309 | struct image *img; | |
1310 | ||
0633d52c KS |
1311 | /* Slice */ |
1312 | struct glyph_slice slice; | |
1313 | ||
8c2da0fa ST |
1314 | /* Non-null means the horizontal clipping region starts from the |
1315 | left edge of *clip_head, and ends with the right edge of | |
1316 | *clip_tail, not including their overhangs. */ | |
1317 | struct glyph_string *clip_head, *clip_tail; | |
1318 | ||
7cd30fff KH |
1319 | /* The current clipping areas. */ |
1320 | NativeRectangle clip[2]; | |
1321 | ||
1322 | /* Number of clipping areas. */ | |
1323 | int num_clips; | |
8443e69e | 1324 | |
93cf902a KH |
1325 | int underline_position; |
1326 | ||
1327 | int underline_thickness; | |
1328 | ||
d5cc60b8 KS |
1329 | struct glyph_string *next, *prev; |
1330 | }; | |
1331 | ||
79fa9e0f | 1332 | #endif /* HAVE_WINDOW_SYSTEM */ |
d5cc60b8 KS |
1333 | |
1334 | \f | |
5f5c8ee5 GM |
1335 | /************************************************************************ |
1336 | Display Dimensions | |
1337 | ************************************************************************/ | |
1338 | ||
1339 | /* Return the height of the mode line in glyph matrix MATRIX, or zero | |
1340 | if not known. This macro is called under circumstances where | |
1341 | MATRIX might not have been allocated yet. */ | |
1342 | ||
1343 | #define MATRIX_MODE_LINE_HEIGHT(MATRIX) \ | |
1344 | ((MATRIX) && (MATRIX)->rows \ | |
1345 | ? MATRIX_MODE_LINE_ROW (MATRIX)->height \ | |
1346 | : 0) | |
1347 | ||
54bff0bd | 1348 | /* Return the height of the header line in glyph matrix MATRIX, or zero |
5f5c8ee5 GM |
1349 | if not known. This macro is called under circumstances where |
1350 | MATRIX might not have been allocated yet. */ | |
1351 | ||
045dee35 | 1352 | #define MATRIX_HEADER_LINE_HEIGHT(MATRIX) \ |
5f5c8ee5 | 1353 | ((MATRIX) && (MATRIX)->rows \ |
045dee35 | 1354 | ? MATRIX_HEADER_LINE_ROW (MATRIX)->height \ |
5f5c8ee5 GM |
1355 | : 0) |
1356 | ||
a4610492 KS |
1357 | /* Return the desired face id for the mode line of a window, depending |
1358 | on whether the window is selected or not, or if the window is the | |
1359 | scrolling window for the currently active minibuffer window. | |
1360 | ||
1361 | Due to the way display_mode_lines manipulates with the contents of | |
1362 | selected_window, this macro needs three arguments: SELW which is | |
1363 | compared against the current value of selected_window, MBW which is | |
1364 | compared against minibuf_window (if SELW doesn't match), and SCRW | |
5705966b | 1365 | which is compared against minibuf_selected_window (if MBW matches). */ |
a4610492 KS |
1366 | |
1367 | #define CURRENT_MODE_LINE_FACE_ID_3(SELW, MBW, SCRW) \ | |
5f380a5b | 1368 | ((!mode_line_in_non_selected_windows \ |
a4610492 | 1369 | || (SELW) == XWINDOW (selected_window) \ |
5f380a5b | 1370 | || (minibuf_level > 0 \ |
5705966b | 1371 | && !NILP (minibuf_selected_window) \ |
5f380a5b | 1372 | && (MBW) == XWINDOW (minibuf_window) \ |
5705966b | 1373 | && (SCRW) == XWINDOW (minibuf_selected_window))) \ |
a4610492 KS |
1374 | ? MODE_LINE_FACE_ID \ |
1375 | : MODE_LINE_INACTIVE_FACE_ID) | |
1376 | ||
1377 | ||
1378 | /* Return the desired face id for the mode line of window W. */ | |
f6911ea7 KS |
1379 | |
1380 | #define CURRENT_MODE_LINE_FACE_ID(W) \ | |
a4610492 | 1381 | (CURRENT_MODE_LINE_FACE_ID_3((W), XWINDOW (selected_window), (W))) |
f6911ea7 | 1382 | |
5f5c8ee5 | 1383 | /* Return the current height of the mode line of window W. If not |
e9e32f46 GM |
1384 | known from current_mode_line_height, look at W's current glyph |
1385 | matrix, or return a default based on the height of the font of the | |
1386 | face `mode-line'. */ | |
1387 | ||
1388 | #define CURRENT_MODE_LINE_HEIGHT(W) \ | |
1389 | (current_mode_line_height >= 0 \ | |
1390 | ? current_mode_line_height \ | |
1391 | : (MATRIX_MODE_LINE_HEIGHT ((W)->current_matrix) \ | |
1392 | ? MATRIX_MODE_LINE_HEIGHT ((W)->current_matrix) \ | |
1393 | : estimate_mode_line_height (XFRAME ((W)->frame), \ | |
f6911ea7 | 1394 | CURRENT_MODE_LINE_FACE_ID (W)))) |
5f5c8ee5 | 1395 | |
54bff0bd | 1396 | /* Return the current height of the header line of window W. If not |
e9e32f46 GM |
1397 | known from current_header_line_height, look at W's current glyph |
1398 | matrix, or return an estimation based on the height of the font of | |
1399 | the face `header-line'. */ | |
1400 | ||
1401 | #define CURRENT_HEADER_LINE_HEIGHT(W) \ | |
1402 | (current_header_line_height >= 0 \ | |
1403 | ? current_header_line_height \ | |
1404 | : (MATRIX_HEADER_LINE_HEIGHT ((W)->current_matrix) \ | |
1405 | ? MATRIX_HEADER_LINE_HEIGHT ((W)->current_matrix) \ | |
1406 | : estimate_mode_line_height (XFRAME ((W)->frame), \ | |
1407 | HEADER_LINE_FACE_ID))) | |
5f5c8ee5 GM |
1408 | |
1409 | /* Return the height of the desired mode line of window W. */ | |
1410 | ||
1411 | #define DESIRED_MODE_LINE_HEIGHT(W) \ | |
1412 | MATRIX_MODE_LINE_HEIGHT ((W)->desired_matrix) | |
1413 | ||
54bff0bd | 1414 | /* Return the height of the desired header line of window W. */ |
5f5c8ee5 | 1415 | |
045dee35 GM |
1416 | #define DESIRED_HEADER_LINE_HEIGHT(W) \ |
1417 | MATRIX_HEADER_LINE_HEIGHT ((W)->desired_matrix) | |
5f5c8ee5 | 1418 | |
54bff0bd | 1419 | /* Value is non-zero if window W wants a mode line. */ |
5f5c8ee5 GM |
1420 | |
1421 | #define WINDOW_WANTS_MODELINE_P(W) \ | |
2e8834ed | 1422 | (!MINI_WINDOW_P ((W)) \ |
5f5c8ee5 | 1423 | && !(W)->pseudo_window_p \ |
2e8834ed | 1424 | && FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME ((W)))) \ |
8801a864 | 1425 | && BUFFERP ((W)->buffer) \ |
2e8834ed | 1426 | && !NILP (XBUFFER ((W)->buffer)->mode_line_format) \ |
87388f9d | 1427 | && WINDOW_TOTAL_LINES (W) > 1) |
5f5c8ee5 | 1428 | |
54bff0bd | 1429 | /* Value is non-zero if window W wants a header line. */ |
5f5c8ee5 | 1430 | |
045dee35 | 1431 | #define WINDOW_WANTS_HEADER_LINE_P(W) \ |
2e8834ed | 1432 | (!MINI_WINDOW_P ((W)) \ |
5f5c8ee5 | 1433 | && !(W)->pseudo_window_p \ |
2e8834ed | 1434 | && FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME ((W)))) \ |
8801a864 | 1435 | && BUFFERP ((W)->buffer) \ |
2e8834ed | 1436 | && !NILP (XBUFFER ((W)->buffer)->header_line_format) \ |
87388f9d | 1437 | && WINDOW_TOTAL_LINES (W) > 1 + !NILP (XBUFFER ((W)->buffer)->mode_line_format)) |
5f5c8ee5 | 1438 | |
d74b2553 KS |
1439 | |
1440 | /* Return proper value to be used as baseline offset of font that has | |
1441 | ASCENT and DESCENT to draw characters by the font at the vertical | |
1442 | center of the line of frame F. | |
1443 | ||
1444 | Here, our task is to find the value of BOFF in the following figure; | |
1445 | ||
1446 | -------------------------+-----------+- | |
1447 | -+-+---------+-+ | | | |
1448 | | | | | | | | |
1449 | | | | | F_ASCENT F_HEIGHT | |
1450 | | | | ASCENT | | | |
1451 | HEIGHT | | | | | | |
1452 | | | |-|-+------+-----------|------- baseline | |
1453 | | | | | BOFF | | | |
1454 | | |---------|-+-+ | | | |
1455 | | | | DESCENT | | | |
1456 | -+-+---------+-+ F_DESCENT | | |
1457 | -------------------------+-----------+- | |
1458 | ||
1459 | -BOFF + DESCENT + (F_HEIGHT - HEIGHT) / 2 = F_DESCENT | |
1460 | BOFF = DESCENT + (F_HEIGHT - HEIGHT) / 2 - F_DESCENT | |
1461 | DESCENT = FONT->descent | |
1462 | HEIGHT = FONT_HEIGHT (FONT) | |
87388f9d | 1463 | F_DESCENT = (FRAME_FONT (F)->descent |
6ed8eeff | 1464 | - F->terminal->output_data.x->baseline_offset) |
d74b2553 KS |
1465 | F_HEIGHT = FRAME_LINE_HEIGHT (F) |
1466 | */ | |
1467 | ||
1468 | #define VCENTER_BASELINE_OFFSET(FONT, F) \ | |
1469 | (FONT_DESCENT (FONT) \ | |
1470 | + (FRAME_LINE_HEIGHT ((F)) - FONT_HEIGHT ((FONT)) \ | |
1471 | + (FRAME_LINE_HEIGHT ((F)) > FONT_HEIGHT ((FONT)))) / 2 \ | |
1472 | - (FONT_DESCENT (FRAME_FONT (F)) - FRAME_BASELINE_OFFSET (F))) | |
1473 | ||
177c0ea7 | 1474 | \f |
5f5c8ee5 GM |
1475 | /*********************************************************************** |
1476 | Faces | |
1477 | ***********************************************************************/ | |
177c0ea7 | 1478 | |
5f5c8ee5 GM |
1479 | /* Indices of face attributes in Lisp face vectors. Slot zero is the |
1480 | symbol `face'. */ | |
1481 | ||
1482 | enum lface_attribute_index | |
1483 | { | |
1484 | LFACE_FAMILY_INDEX = 1, | |
ff63b086 | 1485 | LFACE_FOUNDRY_INDEX, |
5f5c8ee5 GM |
1486 | LFACE_SWIDTH_INDEX, |
1487 | LFACE_HEIGHT_INDEX, | |
1488 | LFACE_WEIGHT_INDEX, | |
1489 | LFACE_SLANT_INDEX, | |
1490 | LFACE_UNDERLINE_INDEX, | |
1491 | LFACE_INVERSE_INDEX, | |
1492 | LFACE_FOREGROUND_INDEX, | |
1493 | LFACE_BACKGROUND_INDEX, | |
1494 | LFACE_STIPPLE_INDEX, | |
1495 | LFACE_OVERLINE_INDEX, | |
1496 | LFACE_STRIKE_THROUGH_INDEX, | |
1497 | LFACE_BOX_INDEX, | |
b3091a23 | 1498 | LFACE_FONT_INDEX, |
cd68bbe8 | 1499 | LFACE_INHERIT_INDEX, |
0ba42da6 | 1500 | LFACE_FONTSET_INDEX, |
5f5c8ee5 GM |
1501 | LFACE_VECTOR_SIZE |
1502 | }; | |
1503 | ||
1504 | ||
1505 | /* Box types of faces. */ | |
1506 | ||
1507 | enum face_box_type | |
1508 | { | |
1509 | /* No box around text. */ | |
1510 | FACE_NO_BOX, | |
1511 | ||
1512 | /* Simple box of specified width and color. Default width is 1, and | |
1513 | default color is the foreground color of the face. */ | |
1514 | FACE_SIMPLE_BOX, | |
1515 | ||
1516 | /* Boxes with 3D shadows. Color equals the background color of the | |
1517 | face. Width is specified. */ | |
1518 | FACE_RAISED_BOX, | |
1519 | FACE_SUNKEN_BOX | |
1520 | }; | |
1521 | ||
1522 | ||
1523 | /* Structure describing a realized face. | |
1524 | ||
1525 | For each Lisp face, 0..N realized faces can exist for different | |
1526 | frames and different charsets. Realized faces are built from Lisp | |
1527 | faces and text properties/overlays by merging faces and adding | |
1528 | unspecified attributes from the `default' face. */ | |
1529 | ||
9f2279ad | 1530 | struct face |
5f5c8ee5 GM |
1531 | { |
1532 | /* The id of this face. The id equals the index of this face in the | |
1533 | vector faces_by_id of its face cache. */ | |
1534 | int id; | |
1535 | ||
1536 | #ifdef HAVE_WINDOW_SYSTEM | |
177c0ea7 | 1537 | |
8016e514 EZ |
1538 | /* If non-zero, this is a GC that we can use without modification for |
1539 | drawing the characters in this face. */ | |
5f5c8ee5 | 1540 | GC gc; |
177c0ea7 | 1541 | |
831fefca GM |
1542 | /* Background stipple or bitmap used for this face. This is |
1543 | an id as returned from load_pixmap. */ | |
1544 | int stipple; | |
5f5c8ee5 GM |
1545 | |
1546 | #else /* not HAVE_WINDOW_SYSTEM */ | |
1547 | ||
1548 | /* Dummy. */ | |
1549 | int stipple; | |
1550 | ||
1551 | #endif /* not HAVE_WINDOW_SYSTEM */ | |
1552 | ||
1553 | /* Pixel value of foreground color for X frames. Color index | |
1554 | for tty frames. */ | |
1555 | unsigned long foreground; | |
177c0ea7 | 1556 | |
5f5c8ee5 GM |
1557 | /* Pixel value or color index of background color. */ |
1558 | unsigned long background; | |
1559 | ||
1560 | /* Pixel value or color index of underline color. */ | |
1561 | unsigned long underline_color; | |
1562 | ||
1563 | /* Pixel value or color index of overlined, strike-through, or box | |
1564 | color. */ | |
1565 | unsigned long overline_color; | |
1566 | unsigned long strike_through_color; | |
1567 | unsigned long box_color; | |
1568 | ||
93cf902a | 1569 | struct font *font; |
8443e69e | 1570 | |
da78062b KH |
1571 | /* Fontset ID if for this face's fontset. Non-ASCII faces derived |
1572 | from the same ASCII face have the same fontset. */ | |
5f5c8ee5 | 1573 | int fontset; |
177c0ea7 | 1574 | |
5f5c8ee5 GM |
1575 | /* Pixmap width and height. */ |
1576 | unsigned int pixmap_w, pixmap_h; | |
177c0ea7 | 1577 | |
5f5c8ee5 | 1578 | /* Non-zero means characters in this face have a box that thickness |
08f9976f KH |
1579 | around them. If it is negative, the absolute value indicates the |
1580 | thickness, and the horizontal lines of box (top and bottom) are | |
54bff0bd | 1581 | drawn inside of characters glyph area. The vertical lines of box |
08f9976f KH |
1582 | (left and right) are drawn as the same way as the case that this |
1583 | value is positive. */ | |
5f5c8ee5 GM |
1584 | int box_line_width; |
1585 | ||
1586 | /* Type of box drawn. A value of FACE_NO_BOX means no box is drawn | |
1587 | around text in this face. A value of FACE_SIMPLE_BOX means a box | |
1588 | of width box_line_width is drawn in color box_color. A value of | |
1589 | FACE_RAISED_BOX or FACE_SUNKEN_BOX means a 3D box is drawn with | |
1590 | shadow colors derived from the background color of the face. */ | |
1591 | enum face_box_type box; | |
1592 | ||
1593 | /* If `box' above specifies a 3D type, 1 means use box_color for | |
1594 | drawing shadows. */ | |
1595 | unsigned use_box_color_for_shadows_p : 1; | |
1596 | ||
5f5c8ee5 GM |
1597 | /* Non-zero if text in this face should be underlined, overlined, |
1598 | strike-through or have a box drawn around it. */ | |
1599 | unsigned underline_p : 1; | |
1600 | unsigned overline_p : 1; | |
1601 | unsigned strike_through_p : 1; | |
1602 | ||
1603 | /* 1 means that the colors specified for this face could not be | |
1604 | loaded, and were replaced by default colors, so they shouldn't be | |
1605 | freed. */ | |
1606 | unsigned foreground_defaulted_p : 1; | |
1607 | unsigned background_defaulted_p : 1; | |
1608 | ||
1609 | /* 1 means that either no color is specified for underlining or that | |
28b927d8 | 1610 | the specified color couldn't be loaded. Use the foreground |
5f5c8ee5 | 1611 | color when drawing in that case. */ |
177c0ea7 | 1612 | unsigned underline_defaulted_p : 1; |
5f5c8ee5 GM |
1613 | |
1614 | /* 1 means that either no color is specified for the corresponding | |
54bff0bd | 1615 | attribute or that the specified color couldn't be loaded. |
5f5c8ee5 GM |
1616 | Use the foreground color when drawing in that case. */ |
1617 | unsigned overline_color_defaulted_p : 1; | |
1618 | unsigned strike_through_color_defaulted_p : 1; | |
1619 | unsigned box_color_defaulted_p : 1; | |
1620 | ||
1621 | /* TTY appearances. Blinking is not yet implemented. Colors are | |
1622 | found in `lface' with empty color string meaning the default | |
1623 | color of the TTY. */ | |
1624 | unsigned tty_bold_p : 1; | |
1625 | unsigned tty_dim_p : 1; | |
1626 | unsigned tty_underline_p : 1; | |
1627 | unsigned tty_alt_charset_p : 1; | |
1628 | unsigned tty_reverse_p : 1; | |
1629 | unsigned tty_blinking_p : 1; | |
1630 | ||
dd387b25 GM |
1631 | /* 1 means that colors of this face may not be freed because they |
1632 | have been copied bitwise from a base face (see | |
1633 | realize_x_face). */ | |
1634 | unsigned colors_copied_bitwise_p : 1; | |
1635 | ||
11894ceb MB |
1636 | /* If non-zero, use overstrike (to simulate bold-face). */ |
1637 | unsigned overstrike : 1; | |
1638 | ||
edfda783 AR |
1639 | /* NOTE: this is not used yet, but eventually this impl should be done |
1640 | similarly to overstrike */ | |
1641 | #ifdef HAVE_NS | |
1642 | /* If non-zero, use geometric rotation (to simulate italic). */ | |
1643 | unsigned synth_ital : 1; | |
1644 | #endif | |
1645 | ||
31e0750e DN |
1646 | /* The Lisp face attributes this face realizes. All attributes |
1647 | in this vector are non-nil. */ | |
1648 | Lisp_Object lface[LFACE_VECTOR_SIZE]; | |
1649 | ||
1650 | /* The hash value of this face. */ | |
1651 | unsigned hash; | |
1652 | ||
5f5c8ee5 GM |
1653 | /* Next and previous face in hash collision list of face cache. */ |
1654 | struct face *next, *prev; | |
b3091a23 | 1655 | |
da78062b KH |
1656 | /* If this face is an ASCII face, this points to this face itself. |
1657 | Otherwise, this points to an ASCII face that has the same | |
1658 | attributes except the font. */ | |
b3091a23 | 1659 | struct face *ascii_face; |
8443e69e | 1660 | |
8443e69e KH |
1661 | /* Extra member that a font-driver uses privately. */ |
1662 | void *extra; | |
5f5c8ee5 GM |
1663 | }; |
1664 | ||
1665 | ||
1666 | /* Color index indicating that face uses a terminal's default color. */ | |
1667 | ||
1668 | #define FACE_TTY_DEFAULT_COLOR ((unsigned long) -1) | |
1669 | ||
f9d2fdc4 EZ |
1670 | /* Color index indicating that face uses an unknown foreground color. */ |
1671 | ||
1672 | #define FACE_TTY_DEFAULT_FG_COLOR ((unsigned long) -2) | |
1673 | ||
54bff0bd | 1674 | /* Color index indicating that face uses an unknown background color. */ |
f9d2fdc4 EZ |
1675 | |
1676 | #define FACE_TTY_DEFAULT_BG_COLOR ((unsigned long) -3) | |
1677 | ||
5f5c8ee5 GM |
1678 | /* Non-zero if FACE was realized for unibyte use. */ |
1679 | ||
1680 | #define FACE_UNIBYTE_P(FACE) ((FACE)->charset < 0) | |
1681 | ||
1682 | ||
1683 | /* IDs of important faces known by the C face code. These are the IDs | |
1684 | of the faces for CHARSET_ASCII. */ | |
1685 | ||
1686 | enum face_id | |
1687 | { | |
1688 | DEFAULT_FACE_ID, | |
1689 | MODE_LINE_FACE_ID, | |
f6911ea7 | 1690 | MODE_LINE_INACTIVE_FACE_ID, |
9ea173e8 | 1691 | TOOL_BAR_FACE_ID, |
afb7aabb | 1692 | FRINGE_FACE_ID, |
045dee35 | 1693 | HEADER_LINE_FACE_ID, |
76a6bc49 GM |
1694 | SCROLL_BAR_FACE_ID, |
1695 | BORDER_FACE_ID, | |
1696 | CURSOR_FACE_ID, | |
1697 | MOUSE_FACE_ID, | |
8317e104 | 1698 | MENU_FACE_ID, |
53abc3bf | 1699 | VERTICAL_BORDER_FACE_ID, |
5f5c8ee5 GM |
1700 | BASIC_FACE_ID_SENTINEL |
1701 | }; | |
1702 | ||
6b61353c | 1703 | #define MAX_FACE_ID ((1 << FACE_ID_BITS) - 1) |
5f5c8ee5 GM |
1704 | |
1705 | /* A cache of realized faces. Each frame has its own cache because | |
1706 | Emacs allows different frame-local face definitions. */ | |
1707 | ||
1708 | struct face_cache | |
1709 | { | |
1710 | /* Hash table of cached realized faces. */ | |
1711 | struct face **buckets; | |
177c0ea7 | 1712 | |
5f5c8ee5 GM |
1713 | /* Back-pointer to the frame this cache belongs to. */ |
1714 | struct frame *f; | |
1715 | ||
1716 | /* A vector of faces so that faces can be referenced by an ID. */ | |
1717 | struct face **faces_by_id; | |
1718 | ||
1719 | /* The allocated size, and number of used slots of faces_by_id. */ | |
1720 | int size, used; | |
90893c55 GM |
1721 | |
1722 | /* Flag indicating that attributes of the `menu' face have been | |
1723 | changed. */ | |
1724 | unsigned menu_face_changed_p : 1; | |
5f5c8ee5 GM |
1725 | }; |
1726 | ||
1727 | ||
1728 | /* Prepare face FACE for use on frame F. This must be called before | |
1729 | using X resources of FACE. */ | |
1730 | ||
1731 | #define PREPARE_FACE_FOR_DISPLAY(F, FACE) \ | |
1732 | if ((FACE)->gc == 0) \ | |
1733 | prepare_face_for_display ((F), (FACE)); \ | |
1734 | else \ | |
1735 | (void) 0 | |
1736 | ||
1737 | /* Return a pointer to the face with ID on frame F, or null if such a | |
1738 | face doesn't exist. */ | |
1739 | ||
1740 | #define FACE_FROM_ID(F, ID) \ | |
c388b3c2 | 1741 | (((unsigned) (ID) < FRAME_FACE_CACHE (F)->used) \ |
5f5c8ee5 GM |
1742 | ? FRAME_FACE_CACHE (F)->faces_by_id[ID] \ |
1743 | : NULL) | |
1744 | ||
ff1a0d8e KH |
1745 | #ifdef HAVE_WINDOW_SYSTEM |
1746 | ||
b3091a23 KH |
1747 | /* Non-zero if FACE is suitable for displaying character CHAR. */ |
1748 | ||
1749 | #define FACE_SUITABLE_FOR_CHAR_P(FACE, CHAR) \ | |
8f924df7 | 1750 | (ASCII_CHAR_P (CHAR) \ |
b3091a23 KH |
1751 | ? (FACE) == (FACE)->ascii_face \ |
1752 | : face_suitable_for_char_p ((FACE), (CHAR))) | |
1753 | ||
5f5c8ee5 | 1754 | /* Return the id of the realized face on frame F that is like the face |
b3091a23 KH |
1755 | with id ID but is suitable for displaying character CHAR. |
1756 | This macro is only meaningful for multibyte character CHAR. */ | |
177c0ea7 | 1757 | |
83a90904 | 1758 | #define FACE_FOR_CHAR(F, FACE, CHAR, POS, OBJECT) \ |
d419e1d9 | 1759 | ((ASCII_CHAR_P (CHAR) || CHAR_BYTE8_P (CHAR)) \ |
83a90904 KH |
1760 | ? (FACE)->ascii_face->id \ |
1761 | : face_for_char ((F), (FACE), (CHAR), (POS), (OBJECT))) | |
5f5c8ee5 | 1762 | |
ff1a0d8e | 1763 | #else /* not HAVE_WINDOW_SYSTEM */ |
5f5c8ee5 | 1764 | |
ff1a0d8e | 1765 | #define FACE_SUITABLE_FOR_CHAR_P(FACE, CHAR) 1 |
83a90904 | 1766 | #define FACE_FOR_CHAR(F, FACE, CHAR, POS, OBJECT) ((FACE)->id) |
ff1a0d8e KH |
1767 | |
1768 | #endif /* not HAVE_WINDOW_SYSTEM */ | |
5f5c8ee5 GM |
1769 | |
1770 | /* Non-zero means face attributes have been changed since the last | |
1771 | redisplay. Used in redisplay_internal. */ | |
1772 | ||
1773 | extern int face_change_count; | |
1774 | ||
e69a9370 | 1775 | /* For reordering of bidirectional text. */ |
b7b65b15 EZ |
1776 | #define BIDI_MAXLEVEL 64 |
1777 | ||
29e3d8d1 EZ |
1778 | /* Data type for describing the bidirectional character types. The |
1779 | first 7 must be at the beginning, because they are the only values | |
1780 | valid in the `bidi_type' member of `struct glyph'; we only reserve | |
1781 | 3 bits for it, so we cannot use there values larger than 7. */ | |
b7b65b15 | 1782 | typedef enum { |
29e3d8d1 | 1783 | UNKNOWN_BT = 0, |
b7b65b15 EZ |
1784 | STRONG_L, /* strong left-to-right */ |
1785 | STRONG_R, /* strong right-to-left */ | |
29e3d8d1 EZ |
1786 | WEAK_EN, /* european number */ |
1787 | WEAK_AN, /* arabic number */ | |
1788 | WEAK_BN, /* boundary neutral */ | |
1789 | NEUTRAL_B, /* paragraph separator */ | |
b7b65b15 EZ |
1790 | STRONG_AL, /* arabic right-to-left letter */ |
1791 | LRE, /* left-to-right embedding */ | |
1792 | LRO, /* left-to-right override */ | |
1793 | RLE, /* right-to-left embedding */ | |
1794 | RLO, /* right-to-left override */ | |
1795 | PDF, /* pop directional format */ | |
b7b65b15 EZ |
1796 | WEAK_ES, /* european number separator */ |
1797 | WEAK_ET, /* european number terminator */ | |
b7b65b15 EZ |
1798 | WEAK_CS, /* common separator */ |
1799 | WEAK_NSM, /* non-spacing mark */ | |
b7b65b15 EZ |
1800 | NEUTRAL_S, /* segment separator */ |
1801 | NEUTRAL_WS, /* whitespace */ | |
1802 | NEUTRAL_ON /* other neutrals */ | |
1803 | } bidi_type_t; | |
1804 | ||
1805 | /* The basic directionality data type. */ | |
1806 | typedef enum { NEUTRAL_DIR, L2R, R2L } bidi_dir_t; | |
1807 | ||
1808 | /* Data type for storing information about characters we need to | |
1809 | remember. */ | |
1810 | struct bidi_saved_info { | |
446470a9 | 1811 | EMACS_INT bytepos, charpos; /* character's buffer position */ |
89d3374a EZ |
1812 | bidi_type_t type; /* character's resolved bidi type */ |
1813 | bidi_type_t type_after_w1; /* original type of the character, after W1 */ | |
1814 | bidi_type_t orig_type; /* type as we found it in the buffer */ | |
b7b65b15 EZ |
1815 | }; |
1816 | ||
1817 | /* Data type for keeping track of saved embedding levels and override | |
1818 | status information. */ | |
1819 | struct bidi_stack { | |
1820 | int level; | |
1821 | bidi_dir_t override; | |
1822 | }; | |
1823 | ||
1824 | /* Data type for iterating over bidi text. */ | |
1825 | struct bidi_it { | |
6bff6497 EZ |
1826 | EMACS_INT bytepos; /* iterator's position in buffer */ |
1827 | EMACS_INT charpos; | |
9c82e145 EZ |
1828 | int ch; /* character itself */ |
1829 | int ch_len; /* length of its multibyte sequence */ | |
89d3374a EZ |
1830 | bidi_type_t type; /* bidi type of this character, after |
1831 | resolving weak and neutral types */ | |
1832 | bidi_type_t type_after_w1; /* original type, after overrides and W1 */ | |
1833 | bidi_type_t orig_type; /* original type, as found in the buffer */ | |
b7b65b15 | 1834 | int resolved_level; /* final resolved level of this character */ |
9c82e145 EZ |
1835 | int invalid_levels; /* how many PDFs to ignore */ |
1836 | int invalid_rl_levels; /* how many PDFs from RLE/RLO to ignore */ | |
9c82e145 EZ |
1837 | int prev_was_pdf; /* if non-zero, previous char was PDF */ |
1838 | struct bidi_saved_info prev; /* info about previous character */ | |
b7b65b15 EZ |
1839 | struct bidi_saved_info last_strong; /* last-seen strong directional char */ |
1840 | struct bidi_saved_info next_for_neutral; /* surrounding characters for... */ | |
1841 | struct bidi_saved_info prev_for_neutral; /* ...resolving neutrals */ | |
1842 | struct bidi_saved_info next_for_ws; /* character after sequence of ws */ | |
6bff6497 EZ |
1843 | EMACS_INT next_en_pos; /* position of next EN char for ET */ |
1844 | EMACS_INT ignore_bn_limit; /* position until which to ignore BNs */ | |
b7b65b15 | 1845 | bidi_dir_t sor; /* direction of start-of-run in effect */ |
d36fe237 | 1846 | int scan_dir; /* direction of text scan, 1: forw, -1: back */ |
b7b65b15 | 1847 | int stack_idx; /* index of current data on the stack */ |
ad55bd46 | 1848 | /* Note: Everything from here on is not copied/saved when the bidi |
e69a9370 EZ |
1849 | iterator state is saved, pushed, or popped. So only put here |
1850 | stuff that is not part of the bidi iterator's state! */ | |
b7b65b15 | 1851 | struct bidi_stack level_stack[BIDI_MAXLEVEL]; /* stack of embedding levels */ |
e69a9370 EZ |
1852 | int first_elt; /* if non-zero, examine current char first */ |
1853 | bidi_dir_t paragraph_dir; /* current paragraph direction */ | |
1854 | int new_paragraph; /* if non-zero, we expect a new paragraph */ | |
1855 | EMACS_INT separator_limit; /* where paragraph separator should end */ | |
b7b65b15 EZ |
1856 | }; |
1857 | ||
e69a9370 EZ |
1858 | /* Value is non-zero when the bidi iterator is at base paragraph |
1859 | embedding level. */ | |
1860 | #define BIDI_AT_BASE_LEVEL(BIDI_IT) \ | |
241ab1c1 | 1861 | ((BIDI_IT).resolved_level == (BIDI_IT).level_stack[0].level) |
5f5c8ee5 GM |
1862 | |
1863 | \f | |
f4e1400d KS |
1864 | /*********************************************************************** |
1865 | Fringes | |
1866 | ***********************************************************************/ | |
1867 | ||
f4e1400d KS |
1868 | /* Structure used to describe where and how to draw a fringe bitmap. |
1869 | WHICH is the fringe bitmap to draw. WD and H is the (adjusted) | |
1870 | width and height of the bitmap, DH is the height adjustment (if | |
1871 | bitmap is periodic). X and Y are frame coordinates of the area to | |
1872 | display the bitmap, DY is relative offset of the bitmap into that | |
0633d52c | 1873 | area. BX, NX, BY, NY specifies the area to clear if the bitmap |
f4e1400d KS |
1874 | does not fill the entire area. FACE is the fringe face. */ |
1875 | ||
1876 | struct draw_fringe_bitmap_params | |
1877 | { | |
6b61353c KH |
1878 | int which; /* enum fringe_bitmap_type */ |
1879 | unsigned short *bits; | |
f4e1400d KS |
1880 | int wd, h, dh; |
1881 | int x, y; | |
1882 | int bx, nx, by, ny; | |
6b61353c KH |
1883 | unsigned cursor_p : 1; |
1884 | unsigned overlay_p : 1; | |
f4e1400d KS |
1885 | struct face *face; |
1886 | }; | |
1887 | ||
6b61353c | 1888 | #define MAX_FRINGE_BITMAPS (1<<FRINGE_ID_BITS) |
f4e1400d KS |
1889 | |
1890 | \f | |
5f5c8ee5 GM |
1891 | /*********************************************************************** |
1892 | Display Iterator | |
1893 | ***********************************************************************/ | |
1894 | ||
1895 | /* Iteration over things to display in current_buffer or in a string. | |
1896 | ||
1897 | The iterator handles: | |
1898 | ||
1899 | 1. Overlay strings (after-string, before-string). | |
1900 | 2. Face properties. | |
1901 | 3. Invisible text properties. | |
1902 | 4. Selective display. | |
1903 | 5. Translation of characters via display tables. | |
1904 | 6. Translation of control characters to the forms `\003' or `^C'. | |
1905 | 7. `glyph' and `space-width' properties. | |
1906 | ||
1907 | Iterators are initialized by calling init_iterator or one of the | |
1908 | equivalent functions below. A call to get_next_display_element | |
1909 | loads the iterator structure with information about what next to | |
1910 | display. A call to set_iterator_to_next increments the iterator's | |
1911 | position. | |
1912 | ||
1913 | Characters from overlay strings, display table entries or control | |
1914 | character translations are returned one at a time. For example, if | |
1915 | we have a text of `a\x01' where `a' has a display table definition | |
1916 | of `cd' and the control character is displayed with a leading | |
1917 | arrow, then the iterator will return: | |
1918 | ||
1919 | Call Return Source Call next | |
1920 | ----------------------------------------------------------------- | |
1921 | next c display table move | |
1922 | next d display table move | |
1923 | next ^ control char move | |
1924 | next A control char move | |
1925 | ||
1926 | The same mechanism is also used to return characters for ellipses | |
1927 | displayed at the end of invisible text. | |
1928 | ||
1929 | CAVEAT: Under some circumstances, move_.* functions can be called | |
1930 | asynchronously, e.g. when computing a buffer position from an x and | |
1931 | y pixel position. This means that these functions and functions | |
1932 | called from them SHOULD NOT USE xmalloc and alike. See also the | |
1933 | comment at the start of xdisp.c. */ | |
1934 | ||
1935 | /* Enumeration describing what kind of display element an iterator is | |
1936 | loaded with after a call to get_next_display_element. */ | |
1937 | ||
1938 | enum display_element_type | |
1939 | { | |
1940 | /* A normal character. */ | |
1941 | IT_CHARACTER, | |
1942 | ||
a88c7fcd | 1943 | /* A composition (static and automatic). */ |
a90fbbf6 KH |
1944 | IT_COMPOSITION, |
1945 | ||
b2cca856 KH |
1946 | /* A glyphless character (e.g. ZWNJ, LRE). */ |
1947 | IT_GLYPHLESS, | |
1948 | ||
5f5c8ee5 GM |
1949 | /* An image. */ |
1950 | IT_IMAGE, | |
1951 | ||
1952 | /* A flexible width and height space. */ | |
1953 | IT_STRETCH, | |
1954 | ||
1955 | /* End of buffer or string. */ | |
1956 | IT_EOB, | |
1957 | ||
1958 | /* Truncation glyphs. Never returned by get_next_display_element. | |
1959 | Used to get display information about truncation glyphs via | |
1960 | produce_glyphs. */ | |
1961 | IT_TRUNCATION, | |
1962 | ||
1963 | /* Continuation glyphs. See the comment for IT_TRUNCATION. */ | |
1964 | IT_CONTINUATION | |
1965 | }; | |
1966 | ||
1967 | ||
1968 | /* An enumerator for each text property that has a meaning for display | |
1969 | purposes. */ | |
1970 | ||
1971 | enum prop_idx | |
1972 | { | |
1973 | FONTIFIED_PROP_IDX, | |
1974 | FACE_PROP_IDX, | |
1975 | INVISIBLE_PROP_IDX, | |
1976 | DISPLAY_PROP_IDX, | |
a90fbbf6 | 1977 | COMPOSITION_PROP_IDX, |
5f5c8ee5 GM |
1978 | |
1979 | /* Not a property. Used to indicate changes in overlays. */ | |
1980 | OVERLAY_PROP_IDX, | |
1981 | ||
1982 | /* Sentinel. */ | |
1983 | LAST_PROP_IDX | |
1984 | }; | |
1985 | ||
bf7a8847 CY |
1986 | /* An enumerator for the method of wrapping long lines. */ |
1987 | ||
1988 | enum line_wrap_method | |
1989 | { | |
1990 | TRUNCATE, | |
1991 | WORD_WRAP, | |
1992 | WINDOW_WRAP | |
1993 | }; | |
5f5c8ee5 | 1994 | |
b2cca856 KH |
1995 | /* An enumerator for the method of displaying glyphless characters. */ |
1996 | ||
1997 | enum glyphless_display_method | |
1998 | { | |
0eb025fb EZ |
1999 | /* Display a thin (1-pixel width) space. On a TTY, display a |
2000 | 1-character width space. */ | |
b2cca856 KH |
2001 | GLYPHLESS_DISPLAY_THIN_SPACE, |
2002 | /* Display an empty box of proper width. */ | |
2003 | GLYPHLESS_DISPLAY_EMPTY_BOX, | |
2004 | /* Display an acronym string in a box. */ | |
2005 | GLYPHLESS_DISPLAY_ACRONYM, | |
0eb025fb EZ |
2006 | /* Display the hexadecimal code of the character in a box. */ |
2007 | GLYPHLESS_DISPLAY_HEX_CODE | |
b2cca856 KH |
2008 | }; |
2009 | ||
0633d52c KS |
2010 | struct it_slice |
2011 | { | |
2012 | Lisp_Object x; | |
2013 | Lisp_Object y; | |
2014 | Lisp_Object width; | |
2015 | Lisp_Object height; | |
2016 | }; | |
2017 | ||
490943fe RS |
2018 | /* Input sources for fetching characters or data to display. |
2019 | The input source is found in the `method' field. */ | |
2020 | ||
6a88f968 KS |
2021 | enum it_method { |
2022 | GET_FROM_BUFFER = 0, | |
2023 | GET_FROM_DISPLAY_VECTOR, | |
6a88f968 KS |
2024 | GET_FROM_STRING, |
2025 | GET_FROM_C_STRING, | |
2026 | GET_FROM_IMAGE, | |
2027 | GET_FROM_STRETCH, | |
2028 | NUM_IT_METHODS | |
2029 | }; | |
0633d52c | 2030 | |
b4bf28b7 | 2031 | /* FIXME: What is this? Why 5? */ |
90fcfd71 | 2032 | #define IT_STACK_SIZE 5 |
946a79d0 | 2033 | |
a88c7fcd KH |
2034 | /* Iterator for composition (both for static and automatic). */ |
2035 | struct composition_it | |
2036 | { | |
2037 | /* Next position at which to check the composition. */ | |
2038 | EMACS_INT stop_pos; | |
2039 | /* ID number of the composition or glyph-string. If negative, we | |
2040 | are not iterating over a composition now. */ | |
2041 | int id; | |
2042 | /* If non-negative, character that triggers the automatic | |
10f72a37 | 2043 | composition at `stop_pos', and this is an automatic composition. |
6450412d KH |
2044 | If negative, this is a static composition. This is set to -2 |
2045 | temporarily if searching of composition reach a limit or a | |
2046 | newline. */ | |
a88c7fcd | 2047 | int ch; |
10f72a37 KH |
2048 | /* If this is an automatic composition, index of a rule for making |
2049 | the automatic composition. Provided that ELT is an element of | |
2050 | Vcomposition_function_table for CH, (nth ELT RULE_IDX) is the | |
2051 | rule for the composition. */ | |
2052 | int rule_idx; | |
2053 | /* If this is an automatic composition, how many characters to look | |
2054 | back from the position where a character triggering the | |
2055 | composition exists. */ | |
cbf21103 | 2056 | int lookback; |
a88c7fcd KH |
2057 | /* If non-negative, number of glyphs of the glyph-string. */ |
2058 | int nglyphs; | |
10f72a37 KH |
2059 | /* Nonzero iff the composition is created while buffer is scanned in |
2060 | reverse order, and thus the grapheme clusters must be rendered | |
2061 | from the last to the first. */ | |
2062 | int reversed_p; | |
2063 | ||
2064 | /** The following members contain information about the current | |
2065 | grapheme cluster. */ | |
2066 | /* Position of the first character of the current grapheme cluster. */ | |
2067 | EMACS_INT charpos; | |
a88c7fcd KH |
2068 | /* Number of characters and bytes of the current grapheme cluster. */ |
2069 | int nchars, nbytes; | |
2070 | /* Indices of the glyphs for the current grapheme cluster. */ | |
2071 | int from, to; | |
2072 | /* Width of the current grapheme cluster in units of pixels on a | |
2073 | graphic display and in units of canonical characters on a | |
2074 | terminal display. */ | |
2075 | int width; | |
2076 | }; | |
2077 | ||
5f5c8ee5 GM |
2078 | struct it |
2079 | { | |
2080 | /* The window in which we iterate over current_buffer (or a string). */ | |
2081 | Lisp_Object window; | |
2082 | struct window *w; | |
2083 | ||
2084 | /* The window's frame. */ | |
2085 | struct frame *f; | |
2086 | ||
6a88f968 KS |
2087 | /* Method to use to load this structure with the next display element. */ |
2088 | enum it_method method; | |
5f5c8ee5 GM |
2089 | |
2090 | /* The next position at which to check for face changes, invisible | |
2091 | text, overlay strings, end of text etc., which see. */ | |
05fe33ff | 2092 | EMACS_INT stop_charpos; |
5f5c8ee5 | 2093 | |
e69a9370 | 2094 | /* Previous stop position, i.e. the last one before the current |
241ab1c1 | 2095 | iterator position in `current'. */ |
e69a9370 EZ |
2096 | EMACS_INT prev_stop; |
2097 | ||
8eef7665 EZ |
2098 | /* Last stop position iterated across whose bidi embedding level is |
2099 | equal to the current paragraph's base embedding level. */ | |
e69a9370 EZ |
2100 | EMACS_INT base_level_stop; |
2101 | ||
5f5c8ee5 GM |
2102 | /* Maximum string or buffer position + 1. ZV when iterating over |
2103 | current_buffer. */ | |
05fe33ff | 2104 | EMACS_INT end_charpos; |
5f5c8ee5 GM |
2105 | |
2106 | /* C string to iterate over. Non-null means get characters from | |
2107 | this string, otherwise characters are read from current_buffer | |
2108 | or it->string. */ | |
675e2c69 | 2109 | const unsigned char *s; |
5f5c8ee5 GM |
2110 | |
2111 | /* Number of characters in the string (s, or it->string) we iterate | |
2112 | over. */ | |
d585695f | 2113 | EMACS_INT string_nchars; |
5f5c8ee5 GM |
2114 | |
2115 | /* Start and end of a visible region; -1 if the region is not | |
2116 | visible in the window. */ | |
05fe33ff | 2117 | EMACS_INT region_beg_charpos, region_end_charpos; |
5f5c8ee5 GM |
2118 | |
2119 | /* Position at which redisplay end trigger functions should be run. */ | |
05fe33ff | 2120 | EMACS_INT redisplay_end_trigger_charpos; |
5f5c8ee5 GM |
2121 | |
2122 | /* 1 means multibyte characters are enabled. */ | |
2123 | unsigned multibyte_p : 1; | |
2124 | ||
5f5c8ee5 | 2125 | /* 1 means window has a mode line at its top. */ |
045dee35 | 2126 | unsigned header_line_p : 1; |
5f5c8ee5 GM |
2127 | |
2128 | /* 1 means `string' is the value of a `display' property. | |
2129 | Don't handle some `display' properties in these strings. */ | |
2130 | unsigned string_from_display_prop_p : 1; | |
2131 | ||
b437860a RS |
2132 | /* When METHOD == next_element_from_display_vector, |
2133 | this is 1 if we're doing an ellipsis. Otherwise meaningless. */ | |
2134 | unsigned ellipsis_p : 1; | |
2135 | ||
c4f4682b MB |
2136 | /* True means cursor shouldn't be displayed here. */ |
2137 | unsigned avoid_cursor_p : 1; | |
2138 | ||
5f5c8ee5 GM |
2139 | /* Display table in effect or null for none. */ |
2140 | struct Lisp_Char_Table *dp; | |
2141 | ||
2142 | /* Current display table vector to return characters from and its | |
2143 | end. dpvec null means we are not returning characters from a | |
2144 | display table entry; current.dpvec_index gives the current index | |
2145 | into dpvec. This same mechanism is also used to return | |
2146 | characters from translated control characters, i.e. `\003' or | |
2147 | `^C'. */ | |
2148 | Lisp_Object *dpvec, *dpend; | |
2149 | ||
2150 | /* Length in bytes of the char that filled dpvec. A value of zero | |
54bff0bd | 2151 | means that no such character is involved. */ |
5f5c8ee5 GM |
2152 | int dpvec_char_len; |
2153 | ||
888ca1e7 KS |
2154 | /* Face id to use for all characters in display vector. -1 if unused. */ |
2155 | int dpvec_face_id; | |
2156 | ||
5f5c8ee5 GM |
2157 | /* Face id of the iterator saved in case a glyph from dpvec contains |
2158 | a face. The face is restored when all glyphs from dpvec have | |
2159 | been delivered. */ | |
2160 | int saved_face_id; | |
2161 | ||
2162 | /* Vector of glyphs for control character translation. The pointer | |
4659838f KH |
2163 | dpvec is set to ctl_chars when a control character is translated. |
2164 | This vector is also used for incomplete multibyte character | |
8d5b986d GM |
2165 | translation (e.g \222\244). Such a character is at most 4 bytes, |
2166 | thus we need at most 16 bytes here. */ | |
2167 | Lisp_Object ctl_chars[16]; | |
5f5c8ee5 | 2168 | |
6b61353c KH |
2169 | /* Initial buffer or string position of the iterator, before skipping |
2170 | over display properties and invisible text. */ | |
2171 | struct display_pos start; | |
2172 | ||
5f5c8ee5 GM |
2173 | /* Current buffer or string position of the iterator, including |
2174 | position in overlay strings etc. */ | |
2175 | struct display_pos current; | |
2176 | ||
c69a28f1 RS |
2177 | /* Total number of overlay strings to process. This can be > |
2178 | OVERLAY_STRING_CHUNK_SIZE. */ | |
2179 | int n_overlay_strings; | |
2180 | ||
d8b2a962 CY |
2181 | /* The charpos where n_overlay_strings was calculated. This should |
2182 | be set at the same time as n_overlay_strings. It is needed | |
2183 | because we show before-strings at the start of invisible text; | |
2184 | see handle_invisible_prop in xdisp.c. */ | |
2185 | int overlay_strings_charpos; | |
2186 | ||
5f5c8ee5 GM |
2187 | /* Vector of overlays to process. Overlay strings are processed |
2188 | OVERLAY_STRING_CHUNK_SIZE at a time. */ | |
e9323aed | 2189 | #define OVERLAY_STRING_CHUNK_SIZE 16 |
5f5c8ee5 GM |
2190 | Lisp_Object overlay_strings[OVERLAY_STRING_CHUNK_SIZE]; |
2191 | ||
c69a28f1 | 2192 | /* For each overlay string, the overlay it came from. */ |
c69a28f1 | 2193 | Lisp_Object string_overlays[OVERLAY_STRING_CHUNK_SIZE]; |
5f5c8ee5 GM |
2194 | |
2195 | /* If non-nil, a Lisp string being processed. If | |
2196 | current.overlay_string_index >= 0, this is an overlay string from | |
2197 | pos. */ | |
2198 | Lisp_Object string; | |
2199 | ||
c69a28f1 RS |
2200 | /* If non-nil, we are processing a string that came |
2201 | from a `display' property given by an overlay. */ | |
2202 | Lisp_Object from_overlay; | |
2203 | ||
5f5c8ee5 GM |
2204 | /* Stack of saved values. New entries are pushed when we begin to |
2205 | process an overlay string or a string from a `glyph' property. | |
2206 | Entries are popped when we return to deliver display elements | |
2207 | from what we previously had. */ | |
2208 | struct iterator_stack_entry | |
9f2279ad | 2209 | { |
128ce5c6 KS |
2210 | Lisp_Object string; |
2211 | int string_nchars; | |
05fe33ff EZ |
2212 | EMACS_INT end_charpos; |
2213 | EMACS_INT stop_charpos; | |
e69a9370 EZ |
2214 | EMACS_INT prev_stop; |
2215 | EMACS_INT base_level_stop; | |
a88c7fcd | 2216 | struct composition_it cmp_it; |
5f5c8ee5 | 2217 | int face_id; |
128ce5c6 KS |
2218 | |
2219 | /* Save values specific to a given method. */ | |
fd00a1e8 | 2220 | union { |
128ce5c6 | 2221 | /* method == GET_FROM_IMAGE */ |
fd00a1e8 KS |
2222 | struct { |
2223 | Lisp_Object object; | |
2224 | struct it_slice slice; | |
2225 | int image_id; | |
2226 | } image; | |
128ce5c6 | 2227 | /* method == GET_FROM_COMPOSITION */ |
fd00a1e8 KS |
2228 | struct { |
2229 | Lisp_Object object; | |
fd00a1e8 | 2230 | } comp; |
128ce5c6 | 2231 | /* method == GET_FROM_STRETCH */ |
fd00a1e8 KS |
2232 | struct { |
2233 | Lisp_Object object; | |
2234 | } stretch; | |
2235 | } u; | |
128ce5c6 KS |
2236 | |
2237 | /* current text and display positions. */ | |
2238 | struct text_pos position; | |
2239 | struct display_pos current; | |
c69a28f1 | 2240 | Lisp_Object from_overlay; |
5f5c8ee5 | 2241 | enum glyph_row_area area; |
946a79d0 | 2242 | enum it_method method; |
5f5c8ee5 GM |
2243 | unsigned multibyte_p : 1; |
2244 | unsigned string_from_display_prop_p : 1; | |
88378b0d | 2245 | unsigned display_ellipsis_p : 1; |
c4f4682b | 2246 | unsigned avoid_cursor_p : 1; |
e966384d | 2247 | enum line_wrap_method line_wrap; |
128ce5c6 KS |
2248 | |
2249 | /* properties from display property that are reset by another display property. */ | |
85c66abe | 2250 | short voffset; |
5f5c8ee5 | 2251 | Lisp_Object space_width; |
5f5c8ee5 GM |
2252 | Lisp_Object font_height; |
2253 | } | |
946a79d0 | 2254 | stack[IT_STACK_SIZE]; |
dfbb1e90 | 2255 | |
5f5c8ee5 GM |
2256 | /* Stack pointer. */ |
2257 | int sp; | |
177c0ea7 | 2258 | |
5f5c8ee5 GM |
2259 | /* -1 means selective display hides everything between a \r and the |
2260 | next newline; > 0 means hide lines indented more than that value. */ | |
2261 | int selective; | |
2262 | ||
2263 | /* An enumeration describing what the next display element is | |
2264 | after a call to get_next_display_element. */ | |
2265 | enum display_element_type what; | |
dfbb1e90 | 2266 | |
5f5c8ee5 GM |
2267 | /* Face to use. */ |
2268 | int face_id; | |
2269 | ||
c69a28f1 RS |
2270 | /* Setting of buffer-local variable selective-display-ellipsis. */ |
2271 | unsigned selective_display_ellipsis_p : 1; | |
2272 | ||
2273 | /* 1 means control characters are translated into the form `^C' | |
2274 | where the `^' can be replaced by a display table entry. */ | |
2275 | unsigned ctl_arrow_p : 1; | |
2276 | ||
5f5c8ee5 GM |
2277 | /* Non-zero means that the current face has a box. */ |
2278 | unsigned face_box_p : 1; | |
2279 | ||
2280 | /* Non-null means that the current character is the first in a run | |
2281 | of characters with box face. */ | |
2282 | unsigned start_of_box_run_p : 1; | |
177c0ea7 | 2283 | |
5f5c8ee5 GM |
2284 | /* Non-zero means that the current character is the last in a run |
2285 | of characters with box face. */ | |
2286 | unsigned end_of_box_run_p : 1; | |
2287 | ||
2288 | /* 1 means overlay strings at end_charpos have been processed. */ | |
2289 | unsigned overlay_strings_at_end_processed_p : 1; | |
2290 | ||
fcc38f6d KS |
2291 | /* 1 means to ignore overlay strings at current pos, as they have |
2292 | already been processed. */ | |
2293 | unsigned ignore_overlay_strings_at_pos_p : 1; | |
2294 | ||
b3091a23 KH |
2295 | /* 1 means the actual glyph is not available in the current |
2296 | system. */ | |
666852af GM |
2297 | unsigned glyph_not_available_p : 1; |
2298 | ||
2299 | /* 1 means the next line in display_line continues a character | |
2300 | consisting of more than one glyph, and some glyphs of this | |
2301 | character have been put on the previous line. */ | |
2302 | unsigned starts_in_middle_of_char_p : 1; | |
b3091a23 | 2303 | |
4d2036e4 GM |
2304 | /* If 1, saved_face_id contains the id of the face in front of text |
2305 | skipped due to selective display. */ | |
2306 | unsigned face_before_selective_p : 1; | |
2307 | ||
0633d52c | 2308 | /* If 1, adjust current glyph so it does not increase current row |
7293ac29 | 2309 | descent/ascent (line-height property). Reset after this glyph. */ |
0633d52c KS |
2310 | unsigned constrain_row_ascent_descent_p : 1; |
2311 | ||
85c66abe DN |
2312 | enum line_wrap_method line_wrap; |
2313 | ||
5f5c8ee5 | 2314 | /* The ID of the default face to use. One of DEFAULT_FACE_ID, |
4d2036e4 | 2315 | MODE_LINE_FACE_ID, etc, depending on what we are displaying. */ |
5f5c8ee5 GM |
2316 | int base_face_id; |
2317 | ||
940afb59 EZ |
2318 | /* If `what' == IT_CHARACTER, the character and the length in bytes |
2319 | of its multibyte sequence. The character comes from a buffer or | |
2320 | a string. It may be different from the character displayed in | |
2321 | case that unibyte_display_via_language_environment is set. | |
2322 | ||
2323 | If `what' == IT_COMPOSITION, the first component of a composition | |
2324 | and length in bytes of the composition. | |
2325 | ||
98092630 | 2326 | If `what' is anything else, these two are undefined (will |
940afb59 EZ |
2327 | probably hold values for the last IT_CHARACTER or IT_COMPOSITION |
2328 | traversed by the iterator. | |
2329 | ||
2330 | The values are updated by get_next_display_element, so they are | |
2331 | out of sync with the value returned by IT_CHARPOS between the | |
2332 | time set_iterator_to_next advances the position and the time | |
2333 | get_next_display_element loads the new values into c and len. */ | |
5f5c8ee5 GM |
2334 | int c, len; |
2335 | ||
a88c7fcd KH |
2336 | /* If what == IT_COMPOSITION, iterator substructure for the |
2337 | composition. */ | |
2338 | struct composition_it cmp_it; | |
a90fbbf6 | 2339 | |
d419e1d9 KH |
2340 | /* The character to display, possibly translated to multibyte if |
2341 | multibyte_p is zero or unibyte_display_via_language_environment | |
2342 | is set. This is set after get_next_display_element has been | |
2343 | called. If we are setting it->C directly before calling | |
2344 | PRODUCE_GLYPHS, this should be set beforehand too. */ | |
5f5c8ee5 GM |
2345 | int char_to_display; |
2346 | ||
b2cca856 KH |
2347 | /* If what == IT_GLYPHLESS, the method to display such a |
2348 | character. */ | |
2349 | enum glyphless_display_method glyphless_method; | |
2350 | ||
5f5c8ee5 GM |
2351 | /* If what == IT_IMAGE, the id of the image to display. */ |
2352 | int image_id; | |
2353 | ||
0633d52c KS |
2354 | /* Values from `slice' property. */ |
2355 | struct it_slice slice; | |
2356 | ||
5f5c8ee5 GM |
2357 | /* Value of the `space-width' property, if any; nil if none. */ |
2358 | Lisp_Object space_width; | |
2359 | ||
2360 | /* Computed from the value of the `raise' property. */ | |
2361 | short voffset; | |
2362 | ||
85c66abe DN |
2363 | /* Number of columns per \t. */ |
2364 | short tab_width; | |
2365 | ||
5f5c8ee5 GM |
2366 | /* Value of the `height' property, if any; nil if none. */ |
2367 | Lisp_Object font_height; | |
2368 | ||
2369 | /* Object and position where the current display element came from. | |
2370 | Object can be a Lisp string in case the current display element | |
f38e5748 KS |
2371 | comes from an overlay string, or it is buffer. It may also be nil |
2372 | during mode-line update. Position is a position in object. */ | |
5f5c8ee5 GM |
2373 | Lisp_Object object; |
2374 | struct text_pos position; | |
2375 | ||
5f5c8ee5 GM |
2376 | /* Width in pixels of truncation and continuation glyphs. */ |
2377 | short truncation_pixel_width, continuation_pixel_width; | |
2378 | ||
2379 | /* First and last visible x-position in the display area. If window | |
87388f9d | 2380 | is hscrolled by n columns, first_visible_x == n * FRAME_COLUMN_WIDTH |
5f5c8ee5 GM |
2381 | (f), and last_visible_x == pixel width of W + first_visible_x. */ |
2382 | int first_visible_x, last_visible_x; | |
2383 | ||
2384 | /* Last visible y-position + 1 in the display area without a mode | |
2385 | line, if the window has one. */ | |
2386 | int last_visible_y; | |
2387 | ||
db0c5a7d KS |
2388 | /* Default amount of additional space in pixels between lines (for |
2389 | window systems only.) */ | |
bf95c413 | 2390 | int extra_line_spacing; |
5f5c8ee5 | 2391 | |
db0c5a7d KS |
2392 | /* Max extra line spacing added in this row. */ |
2393 | int max_extra_line_spacing; | |
2394 | ||
d956147c KS |
2395 | /* Override font height information for this glyph. |
2396 | Used if override_ascent >= 0. Cleared after this glyph. */ | |
2397 | int override_ascent, override_descent, override_boff; | |
2398 | ||
5f5c8ee5 GM |
2399 | /* If non-null, glyphs are produced in glyph_row with each call to |
2400 | produce_glyphs. */ | |
2401 | struct glyph_row *glyph_row; | |
2402 | ||
2403 | /* The area of glyph_row to which glyphs are added. */ | |
2404 | enum glyph_row_area area; | |
2405 | ||
2406 | /* Number of glyphs needed for the last character requested via | |
2407 | produce_glyphs. This is 1 except for tabs. */ | |
2408 | int nglyphs; | |
177c0ea7 | 2409 | |
5f5c8ee5 GM |
2410 | /* Width of the display element in pixels. Result of |
2411 | produce_glyphs. */ | |
2412 | int pixel_width; | |
2413 | ||
2febf6e0 GM |
2414 | /* Current, maximum logical, and maximum physical line height |
2415 | information. Result of produce_glyphs. */ | |
5f5c8ee5 | 2416 | int ascent, descent, max_ascent, max_descent; |
2febf6e0 | 2417 | int phys_ascent, phys_descent, max_phys_ascent, max_phys_descent; |
5f5c8ee5 GM |
2418 | |
2419 | /* Current x pixel position within the display line. This value | |
2420 | does not include the width of continuation lines in front of the | |
2421 | line. The value of current_x is automatically incremented by | |
2422 | pixel_width with each call to produce_glyphs. */ | |
2423 | int current_x; | |
2424 | ||
2425 | /* Accumulated width of continuation lines. If > 0, this means we | |
2426 | are currently in a continuation line. This is initially zero and | |
2427 | incremented/reset by display_line, move_it_to etc. */ | |
2428 | int continuation_lines_width; | |
2429 | ||
8eef7665 EZ |
2430 | /* Buffer position that ends the buffer text line being iterated. |
2431 | This is normally the position after the newline at EOL. If this | |
2432 | is the last line of the buffer and it doesn't have a newline, | |
2433 | value is ZV/ZV_BYTE. Set and used only if IT->bidi_p, for | |
2434 | setting the end position of glyph rows produced for continuation | |
2435 | lines, see display_line. */ | |
2436 | struct text_pos eol_pos; | |
2437 | ||
5f5c8ee5 GM |
2438 | /* Current y-position. Automatically incremented by the height of |
2439 | glyph_row in move_it_to and display_line. */ | |
2440 | int current_y; | |
2441 | ||
6b61353c KH |
2442 | /* Vertical matrix position of first text line in window. */ |
2443 | int first_vpos; | |
2444 | ||
5f5c8ee5 GM |
2445 | /* Current vertical matrix position, or line number. Automatically |
2446 | incremented by move_it_to and display_line. */ | |
2447 | int vpos; | |
2448 | ||
2449 | /* Horizontal matrix position reached in move_it_in_display_line. | |
2450 | Only set there, not in display_line. */ | |
2451 | int hpos; | |
6b61353c KH |
2452 | |
2453 | /* Left fringe bitmap number (enum fringe_bitmap_type). */ | |
2454 | unsigned left_user_fringe_bitmap : FRINGE_ID_BITS; | |
2455 | ||
6b61353c KH |
2456 | /* Right fringe bitmap number (enum fringe_bitmap_type). */ |
2457 | unsigned right_user_fringe_bitmap : FRINGE_ID_BITS; | |
2458 | ||
b3b08f03 KS |
2459 | /* Face of the left fringe glyph. */ |
2460 | unsigned left_user_fringe_face_id : FACE_ID_BITS; | |
2461 | ||
6b61353c KH |
2462 | /* Face of the right fringe glyph. */ |
2463 | unsigned right_user_fringe_face_id : FACE_ID_BITS; | |
b7b65b15 | 2464 | |
f44e260c EZ |
2465 | /* Non-zero means we need to reorder bidirectional text for display |
2466 | in the visual order. */ | |
b7b65b15 EZ |
2467 | int bidi_p; |
2468 | ||
f44e260c | 2469 | /* For iterating over bidirectional text. */ |
b7b65b15 | 2470 | struct bidi_it bidi_it; |
b44d9321 | 2471 | bidi_dir_t paragraph_embedding; |
5f5c8ee5 GM |
2472 | }; |
2473 | ||
2474 | ||
2475 | /* Access to positions of iterator IT. */ | |
2476 | ||
2477 | #define IT_CHARPOS(IT) CHARPOS ((IT).current.pos) | |
2478 | #define IT_BYTEPOS(IT) BYTEPOS ((IT).current.pos) | |
2479 | #define IT_STRING_CHARPOS(IT) CHARPOS ((IT).current.string_pos) | |
2480 | #define IT_STRING_BYTEPOS(IT) BYTEPOS ((IT).current.string_pos) | |
2481 | ||
2482 | /* Test if IT has reached the end of its buffer or string. This will | |
2483 | only work after get_next_display_element has been called. */ | |
2484 | ||
2485 | #define ITERATOR_AT_END_P(IT) ((IT)->what == IT_EOB) | |
2486 | ||
2487 | /* Non-zero means IT is at the end of a line. This is the case if it | |
2488 | is either on a newline or on a carriage return and selective | |
2489 | display hides the rest of the line. */ | |
2490 | ||
2491 | #define ITERATOR_AT_END_OF_LINE_P(IT) \ | |
2492 | ((IT)->what == IT_CHARACTER \ | |
2493 | && ((IT)->c == '\n' \ | |
2494 | || ((IT)->c == '\r' && (IT)->selective))) | |
2495 | ||
e3670e00 EZ |
2496 | /* Call produce_glyphs or FRAME_RIF->produce_glyphs, if set. Shortcut |
2497 | to avoid the function call overhead. */ | |
5f5c8ee5 | 2498 | |
fa971ac3 KL |
2499 | #define PRODUCE_GLYPHS(IT) \ |
2500 | do { \ | |
c0546589 EZ |
2501 | if ((IT)->glyph_row != NULL && (IT)->bidi_p) \ |
2502 | { \ | |
2503 | if ((IT)->bidi_it.paragraph_dir == R2L) \ | |
2504 | (IT)->glyph_row->reversed_p = 1; \ | |
2505 | else \ | |
2506 | (IT)->glyph_row->reversed_p = 0; \ | |
2507 | } \ | |
fa971ac3 KL |
2508 | if (FRAME_RIF ((IT)->f) != NULL) \ |
2509 | FRAME_RIF ((IT)->f)->produce_glyphs ((IT)); \ | |
2510 | else \ | |
2511 | produce_glyphs ((IT)); \ | |
2512 | if ((IT)->glyph_row != NULL) \ | |
2513 | inhibit_free_realized_faces = 1; \ | |
2514 | } while (0) | |
5f5c8ee5 GM |
2515 | |
2516 | /* Bit-flags indicating what operation move_it_to should perform. */ | |
2517 | ||
2518 | enum move_operation_enum | |
2519 | { | |
2520 | /* Stop if specified x-position is reached. */ | |
2521 | MOVE_TO_X = 0x01, | |
2522 | ||
2523 | /* Stop if specified y-position is reached. */ | |
2524 | MOVE_TO_Y = 0x02, | |
2525 | ||
2526 | /* Stop if specified vpos is reached. */ | |
2527 | MOVE_TO_VPOS = 0x04, | |
2528 | ||
2529 | /* Stop if specified buffer or string position is reached. */ | |
2530 | MOVE_TO_POS = 0x08 | |
2531 | }; | |
2532 | ||
2533 | ||
2534 | \f | |
2535 | /*********************************************************************** | |
2536 | Window-based redisplay interface | |
2537 | ***********************************************************************/ | |
2538 | ||
2539 | /* Structure used to describe runs of lines that must be scrolled. */ | |
2540 | ||
2541 | struct run | |
2542 | { | |
2543 | /* Source and destination y pixel position. */ | |
2544 | int desired_y, current_y; | |
2545 | ||
2546 | /* Source and destination vpos in matrix. */ | |
2547 | int desired_vpos, current_vpos; | |
2548 | ||
2549 | /* Height in pixels, number of glyph rows. */ | |
2550 | int height, nrows; | |
2551 | }; | |
2552 | ||
2553 | ||
e6b3aecd KS |
2554 | /* Handlers for setting frame parameters. */ |
2555 | ||
383e0970 | 2556 | typedef void (*frame_parm_handler) (struct frame *, Lisp_Object, Lisp_Object); |
e6b3aecd KS |
2557 | |
2558 | ||
5f5c8ee5 GM |
2559 | /* Structure holding system-dependent interface functions needed |
2560 | for window-based redisplay. */ | |
2561 | ||
2562 | struct redisplay_interface | |
2563 | { | |
e6b3aecd KS |
2564 | /* Handlers for setting frame parameters. */ |
2565 | frame_parm_handler *frame_parm_handlers; | |
2566 | ||
5f5c8ee5 GM |
2567 | /* Produce glyphs/get display metrics for the display element IT is |
2568 | loaded with. */ | |
383e0970 | 2569 | void (*produce_glyphs) (struct it *it); |
177c0ea7 | 2570 | |
5f5c8ee5 GM |
2571 | /* Write or insert LEN glyphs from STRING at the nominal output |
2572 | position. */ | |
383e0970 J |
2573 | void (*write_glyphs) (struct glyph *string, int len); |
2574 | void (*insert_glyphs) (struct glyph *start, int len); | |
5f5c8ee5 GM |
2575 | |
2576 | /* Clear from nominal output position to X. X < 0 means clear | |
2577 | to right end of display. */ | |
383e0970 | 2578 | void (*clear_end_of_line) (int x); |
177c0ea7 | 2579 | |
5f5c8ee5 GM |
2580 | /* Function to call to scroll the display as described by RUN on |
2581 | window W. */ | |
383e0970 | 2582 | void (*scroll_run_hook) (struct window *w, struct run *run); |
5f5c8ee5 GM |
2583 | |
2584 | /* Function to call after a line in a display has been completely | |
2585 | updated. Used to draw truncation marks and alike. DESIRED_ROW | |
2586 | is the desired row which has been updated. */ | |
383e0970 | 2587 | void (*after_update_window_line_hook) (struct glyph_row *desired_row); |
42087301 | 2588 | |
5f5c8ee5 GM |
2589 | /* Function to call before beginning to update window W in |
2590 | window-based redisplay. */ | |
383e0970 | 2591 | void (*update_window_begin_hook) (struct window *w); |
5f5c8ee5 GM |
2592 | |
2593 | /* Function to call after window W has been updated in window-based | |
712eaef2 GM |
2594 | redisplay. CURSOR_ON_P non-zero means switch cursor on. |
2595 | MOUSE_FACE_OVERWRITTEN_P non-zero means that some lines in W | |
2596 | that contained glyphs in mouse-face were overwritten, so we | |
54bff0bd | 2597 | have to update the mouse highlight. */ |
383e0970 J |
2598 | void (*update_window_end_hook) (struct window *w, int cursor_on_p, |
2599 | int mouse_face_overwritten_p); | |
177c0ea7 | 2600 | |
5f5c8ee5 GM |
2601 | /* Move cursor to row/column position VPOS/HPOS, pixel coordinates |
2602 | Y/X. HPOS/VPOS are window-relative row and column numbers and X/Y | |
2603 | are window-relative pixel positions. */ | |
383e0970 | 2604 | void (*cursor_to) (int vpos, int hpos, int y, int x); |
5f5c8ee5 GM |
2605 | |
2606 | /* Flush the display of frame F. For X, this is XFlush. */ | |
383e0970 | 2607 | void (*flush_display) (struct frame *f); |
5f5c8ee5 | 2608 | |
d74b2553 KS |
2609 | /* Flush the display of frame F if non-NULL. This is called |
2610 | during redisplay, and should be NULL on systems which flushes | |
2611 | automatically before reading input. */ | |
383e0970 | 2612 | void (*flush_display_optional) (struct frame *f); |
d74b2553 | 2613 | |
ec68e323 | 2614 | /* Clear the mouse hightlight in window W, if there is any. */ |
383e0970 | 2615 | void (*clear_window_mouse_face) (struct window *w); |
712eaef2 | 2616 | |
5f5c8ee5 GM |
2617 | /* Set *LEFT and *RIGHT to the left and right overhang of GLYPH on |
2618 | frame F. */ | |
383e0970 J |
2619 | void (*get_glyph_overhangs) (struct glyph *glyph, struct frame *f, |
2620 | int *left, int *right); | |
2febf6e0 GM |
2621 | |
2622 | /* Fix the display of AREA of ROW in window W for overlapping rows. | |
2623 | This function is called from redraw_overlapping_rows after | |
2624 | desired rows have been made current. */ | |
383e0970 J |
2625 | void (*fix_overlapping_area) (struct window *w, struct glyph_row *row, |
2626 | enum glyph_row_area area, int); | |
f4e1400d | 2627 | |
79fa9e0f KS |
2628 | #ifdef HAVE_WINDOW_SYSTEM |
2629 | ||
f4e1400d | 2630 | /* Draw a fringe bitmap in window W of row ROW using parameters P. */ |
383e0970 J |
2631 | void (*draw_fringe_bitmap) (struct window *w, struct glyph_row *row, |
2632 | struct draw_fringe_bitmap_params *p); | |
f4e1400d | 2633 | |
6b61353c | 2634 | /* Define and destroy fringe bitmap no. WHICH. */ |
383e0970 J |
2635 | void (*define_fringe_bitmap) (int which, unsigned short *bits, |
2636 | int h, int wd); | |
2637 | void (*destroy_fringe_bitmap) (int which); | |
6b61353c | 2638 | |
0633d52c | 2639 | /* Compute left and right overhang of glyph string S. |
d5cc60b8 | 2640 | A NULL pointer if platform does not support this. */ |
383e0970 | 2641 | void (*compute_glyph_string_overhangs) (struct glyph_string *s); |
d5cc60b8 KS |
2642 | |
2643 | /* Draw a glyph string S. */ | |
383e0970 | 2644 | void (*draw_glyph_string) (struct glyph_string *s); |
d5cc60b8 | 2645 | |
d74b2553 | 2646 | /* Define cursor CURSOR on frame F. */ |
383e0970 | 2647 | void (*define_frame_cursor) (struct frame *f, Cursor cursor); |
5f5c8ee5 | 2648 | |
d74b2553 | 2649 | /* Clear the area at (X,Y,WIDTH,HEIGHT) of frame F. */ |
383e0970 J |
2650 | void (*clear_frame_area) (struct frame *f, int x, int y, |
2651 | int width, int height); | |
5f5c8ee5 | 2652 | |
e5a3b7d9 KS |
2653 | /* Draw specified cursor CURSOR_TYPE of width CURSOR_WIDTH |
2654 | at row GLYPH_ROW on window W if ON_P is 1. If ON_P is | |
2655 | 0, don't draw cursor. If ACTIVE_P is 1, system caret | |
2656 | should track this cursor (when applicable). */ | |
383e0970 J |
2657 | void (*draw_window_cursor) (struct window *w, |
2658 | struct glyph_row *glyph_row, | |
2659 | int x, int y, | |
2660 | int cursor_type, int cursor_width, | |
2661 | int on_p, int active_p); | |
5f5c8ee5 | 2662 | |
d74b2553 | 2663 | /* Draw vertical border for window W from (X,Y0) to (X,Y1). */ |
383e0970 J |
2664 | void (*draw_vertical_window_border) (struct window *w, |
2665 | int x, int y0, int y1); | |
d5cc60b8 | 2666 | |
0633d52c | 2667 | /* Shift display of frame F to make room for inserted glyphs. |
d74b2553 KS |
2668 | The area at pixel (X,Y) of width WIDTH and height HEIGHT is |
2669 | shifted right by SHIFT_BY pixels. */ | |
383e0970 J |
2670 | void (*shift_glyphs_for_insert) (struct frame *f, |
2671 | int x, int y, int width, | |
2672 | int height, int shift_by); | |
d5cc60b8 | 2673 | |
d74b2553 KS |
2674 | #endif /* HAVE_WINDOW_SYSTEM */ |
2675 | }; | |
d5cc60b8 | 2676 | |
5f5c8ee5 GM |
2677 | \f |
2678 | /*********************************************************************** | |
2679 | Images | |
2680 | ***********************************************************************/ | |
2681 | ||
4397e334 | 2682 | #ifdef HAVE_WINDOW_SYSTEM |
5f5c8ee5 GM |
2683 | |
2684 | /* Structure forward declarations. */ | |
2685 | ||
2686 | struct image; | |
2687 | ||
2688 | ||
54bff0bd | 2689 | /* Each image format (JPEG, TIFF, ...) supported is described by |
5f5c8ee5 GM |
2690 | a structure of the type below. */ |
2691 | ||
2692 | struct image_type | |
2693 | { | |
2694 | /* A symbol uniquely identifying the image type, .e.g `jpeg'. */ | |
2695 | Lisp_Object *type; | |
2696 | ||
2697 | /* Check that SPEC is a valid image specification for the given | |
2698 | image type. Value is non-zero if SPEC is valid. */ | |
383e0970 | 2699 | int (* valid_p) (Lisp_Object spec); |
5f5c8ee5 GM |
2700 | |
2701 | /* Load IMG which is used on frame F from information contained in | |
2702 | IMG->spec. Value is non-zero if successful. */ | |
383e0970 | 2703 | int (* load) (struct frame *f, struct image *img); |
5f5c8ee5 GM |
2704 | |
2705 | /* Free resources of image IMG which is used on frame F. */ | |
383e0970 | 2706 | void (* free) (struct frame *f, struct image *img); |
9f2279ad | 2707 | |
5f5c8ee5 GM |
2708 | /* Next in list of all supported image types. */ |
2709 | struct image_type *next; | |
2710 | }; | |
9f2279ad | 2711 | |
9f2279ad | 2712 | |
5f5c8ee5 GM |
2713 | /* Structure describing an image. Specific image formats like XBM are |
2714 | converted into this form, so that display only has to deal with | |
2715 | this type of image. */ | |
9f2279ad | 2716 | |
5f5c8ee5 GM |
2717 | struct image |
2718 | { | |
2719 | /* The time in seconds at which the image was last displayed. Set | |
2720 | in prepare_image_for_display. */ | |
2721 | unsigned long timestamp; | |
9f2279ad | 2722 | |
5f5c8ee5 GM |
2723 | /* Pixmaps of the image. */ |
2724 | Pixmap pixmap, mask; | |
9f2279ad | 2725 | |
5f5c8ee5 GM |
2726 | /* Colors allocated for this image, if any. Allocated via xmalloc. */ |
2727 | unsigned long *colors; | |
2728 | int ncolors; | |
9f2279ad | 2729 | |
0ff7c0d4 MB |
2730 | /* A single `background color' for this image, for the use of anyone that |
2731 | cares about such a thing. Only valid if the `background_valid' field | |
2732 | is true. This should generally be accessed by calling the accessor | |
2733 | macro `IMAGE_BACKGROUND', which will heuristically calculate a value | |
2734 | if necessary. */ | |
2735 | unsigned long background; | |
2736 | ||
f6b54648 YM |
2737 | /* Foreground and background colors of the frame on which the image |
2738 | is created. */ | |
2739 | unsigned long frame_foreground, frame_background; | |
2740 | ||
0ff7c0d4 MB |
2741 | /* True if this image has a `transparent' background -- that is, is |
2742 | uses an image mask. The accessor macro for this is | |
2743 | `IMAGE_BACKGROUND_TRANSPARENT'. */ | |
2744 | unsigned background_transparent : 1; | |
2745 | ||
2746 | /* True if the `background' and `background_transparent' fields are | |
2747 | valid, respectively. */ | |
2748 | unsigned background_valid : 1, background_transparent_valid : 1; | |
2749 | ||
5f5c8ee5 GM |
2750 | /* Width and height of the image. */ |
2751 | int width, height; | |
87485d6f | 2752 | |
5f5c8ee5 GM |
2753 | /* These values are used for the rectangles displayed for images |
2754 | that can't be loaded. */ | |
2755 | #define DEFAULT_IMAGE_WIDTH 30 | |
2756 | #define DEFAULT_IMAGE_HEIGHT 30 | |
9f2279ad | 2757 | |
7b48cc13 KS |
2758 | /* Top/left and bottom/right corner pixel of actual image data. |
2759 | Used by four_corners_best to consider the real image data, | |
2760 | rather than looking at the optional image margin. */ | |
2761 | int corners[4]; | |
2762 | #define TOP_CORNER 0 | |
2763 | #define LEFT_CORNER 1 | |
2764 | #define BOT_CORNER 2 | |
2765 | #define RIGHT_CORNER 3 | |
2766 | ||
bdda7eb0 | 2767 | /* Percent of image height used as ascent. A value of |
54bff0bd | 2768 | CENTERED_IMAGE_ASCENT means draw the image centered on the |
bdda7eb0 | 2769 | line. */ |
5f5c8ee5 GM |
2770 | int ascent; |
2771 | #define DEFAULT_IMAGE_ASCENT 50 | |
bdda7eb0 | 2772 | #define CENTERED_IMAGE_ASCENT -1 |
c22ca93b | 2773 | |
5f5c8ee5 GM |
2774 | /* Lisp specification of this image. */ |
2775 | Lisp_Object spec; | |
c22ca93b | 2776 | |
a2bc5bdd SM |
2777 | /* List of "references" followed to build the image. |
2778 | Typically will just contain the name of the image file. | |
2779 | Used to allow fine-grained cache flushing. */ | |
2780 | Lisp_Object dependencies; | |
2781 | ||
5f5c8ee5 GM |
2782 | /* Relief to draw around the image. */ |
2783 | int relief; | |
c22ca93b | 2784 | |
f8215993 GM |
2785 | /* Optional margins around the image. This includes the relief. */ |
2786 | int hmargin, vmargin; | |
5f5c8ee5 GM |
2787 | |
2788 | /* Reference to the type of the image. */ | |
2789 | struct image_type *type; | |
2790 | ||
a7ac64a9 GM |
2791 | /* 1 means that loading the image failed. Don't try again. */ |
2792 | unsigned load_failed_p; | |
2793 | ||
5f5c8ee5 GM |
2794 | /* A place for image types to store additional data. The member |
2795 | data.lisp_val is marked during GC, so it's safe to store Lisp data | |
2796 | there. Image types should free this data when their `free' | |
2797 | function is called. */ | |
2798 | struct | |
c22ca93b | 2799 | { |
5f5c8ee5 GM |
2800 | int int_val; |
2801 | void *ptr_val; | |
2802 | Lisp_Object lisp_val; | |
2803 | } data; | |
c22ca93b | 2804 | |
5f5c8ee5 GM |
2805 | /* Hash value of image specification to speed up comparisons. */ |
2806 | unsigned hash; | |
2807 | ||
2808 | /* Image id of this image. */ | |
2809 | int id; | |
2810 | ||
2811 | /* Hash collision chain. */ | |
2812 | struct image *next, *prev; | |
2813 | }; | |
2814 | ||
2815 | ||
2816 | /* Cache of images. Each frame has a cache. X frames with the same | |
2817 | x_display_info share their caches. */ | |
2818 | ||
2819 | struct image_cache | |
2820 | { | |
2821 | /* Hash table of images. */ | |
2822 | struct image **buckets; | |
2823 | ||
2824 | /* Vector mapping image ids to images. */ | |
2825 | struct image **images; | |
2826 | ||
2827 | /* Allocated size of `images'. */ | |
2828 | unsigned size; | |
2829 | ||
2830 | /* Number of images in the cache. */ | |
2831 | unsigned used; | |
2832 | ||
2833 | /* Reference count (number of frames sharing this cache). */ | |
2834 | int refcount; | |
2835 | }; | |
2836 | ||
2837 | ||
5f5c8ee5 GM |
2838 | /* Value is a pointer to the image with id ID on frame F, or null if |
2839 | no image with that id exists. */ | |
2840 | ||
2841 | #define IMAGE_FROM_ID(F, ID) \ | |
354884c4 SM |
2842 | (((ID) >= 0 && (ID) < (FRAME_IMAGE_CACHE (F)->used)) \ |
2843 | ? FRAME_IMAGE_CACHE (F)->images[ID] \ | |
5f5c8ee5 GM |
2844 | : NULL) |
2845 | ||
2846 | /* Size of bucket vector of image caches. Should be prime. */ | |
2847 | ||
2848 | #define IMAGE_CACHE_BUCKETS_SIZE 1001 | |
2849 | ||
4397e334 | 2850 | #endif /* HAVE_WINDOW_SYSTEM */ |
5f5c8ee5 GM |
2851 | |
2852 | ||
2853 | \f | |
2854 | /*********************************************************************** | |
9ea173e8 | 2855 | Tool-bars |
5f5c8ee5 GM |
2856 | ***********************************************************************/ |
2857 | ||
9ea173e8 GM |
2858 | /* Enumeration defining where to find tool-bar item information in |
2859 | tool-bar items vectors stored with frames. Each tool-bar item | |
2860 | occupies TOOL_BAR_ITEM_NSLOTS elements in such a vector. */ | |
5f5c8ee5 | 2861 | |
9ea173e8 | 2862 | enum tool_bar_item_idx |
5f5c8ee5 | 2863 | { |
9ea173e8 | 2864 | /* The key of the tool-bar item. Used to remove items when a binding |
5f5c8ee5 | 2865 | for `undefined' is found. */ |
9ea173e8 | 2866 | TOOL_BAR_ITEM_KEY, |
5f5c8ee5 GM |
2867 | |
2868 | /* Non-nil if item is enabled. */ | |
9ea173e8 | 2869 | TOOL_BAR_ITEM_ENABLED_P, |
5f5c8ee5 GM |
2870 | |
2871 | /* Non-nil if item is selected (pressed). */ | |
9ea173e8 | 2872 | TOOL_BAR_ITEM_SELECTED_P, |
5f5c8ee5 GM |
2873 | |
2874 | /* Caption. */ | |
9ea173e8 | 2875 | TOOL_BAR_ITEM_CAPTION, |
5f5c8ee5 GM |
2876 | |
2877 | /* Image(s) to display. This is either a single image specification | |
2878 | or a vector of specifications. */ | |
9ea173e8 | 2879 | TOOL_BAR_ITEM_IMAGES, |
5f5c8ee5 GM |
2880 | |
2881 | /* The binding. */ | |
9ea173e8 | 2882 | TOOL_BAR_ITEM_BINDING, |
5f5c8ee5 | 2883 | |
4039c786 CY |
2884 | /* Button type. One of nil (default button), t (a separator), |
2885 | `:radio', or `:toggle'. The latter two currently do nothing. */ | |
9ea173e8 | 2886 | TOOL_BAR_ITEM_TYPE, |
c22ca93b | 2887 | |
5f5c8ee5 | 2888 | /* Help string. */ |
9ea173e8 | 2889 | TOOL_BAR_ITEM_HELP, |
5f5c8ee5 | 2890 | |
fface677 JD |
2891 | /* Icon file name of right to left image when an RTL locale is used. */ |
2892 | TOOL_BAR_ITEM_RTL_IMAGE, | |
2893 | ||
f904c0f9 JD |
2894 | /* Label to show when text labels are enabled. */ |
2895 | TOOL_BAR_ITEM_LABEL, | |
2896 | ||
d2bd5189 JD |
2897 | /* If we shall show the label only below the icon and not beside it. */ |
2898 | TOOL_BAR_ITEM_VERT_ONLY, | |
2899 | ||
9ea173e8 GM |
2900 | /* Sentinel = number of slots in tool_bar_items occupied by one |
2901 | tool-bar item. */ | |
2902 | TOOL_BAR_ITEM_NSLOTS | |
5f5c8ee5 GM |
2903 | }; |
2904 | ||
2905 | ||
2906 | /* An enumeration for the different images that can be specified | |
9ea173e8 | 2907 | for a tool-bar item. */ |
5f5c8ee5 | 2908 | |
9ea173e8 | 2909 | enum tool_bar_item_image |
5f5c8ee5 | 2910 | { |
9ea173e8 GM |
2911 | TOOL_BAR_IMAGE_ENABLED_SELECTED, |
2912 | TOOL_BAR_IMAGE_ENABLED_DESELECTED, | |
2913 | TOOL_BAR_IMAGE_DISABLED_SELECTED, | |
2914 | TOOL_BAR_IMAGE_DISABLED_DESELECTED | |
5f5c8ee5 GM |
2915 | }; |
2916 | ||
9ea173e8 | 2917 | /* Margin around tool-bar buttons in pixels. */ |
5f5c8ee5 | 2918 | |
cc4cb755 | 2919 | extern Lisp_Object Vtool_bar_button_margin; |
5f5c8ee5 | 2920 | |
f904c0f9 JD |
2921 | /* Tool bar style */ |
2922 | ||
2923 | extern Lisp_Object Vtool_bar_style; | |
2924 | ||
2925 | /* Maximum number of characters a label can have to be shown. */ | |
2926 | ||
2927 | extern EMACS_INT tool_bar_max_label_size; | |
2928 | #define DEFAULT_TOOL_BAR_LABEL_SIZE 14 | |
2929 | ||
9ea173e8 | 2930 | /* Thickness of relief to draw around tool-bar buttons. */ |
5f5c8ee5 | 2931 | |
31ade731 | 2932 | extern EMACS_INT tool_bar_button_relief; |
5f5c8ee5 | 2933 | |
cc4cb755 GM |
2934 | /* Default values of the above variables. */ |
2935 | ||
cfa5cf43 PJ |
2936 | #define DEFAULT_TOOL_BAR_BUTTON_MARGIN 4 |
2937 | #define DEFAULT_TOOL_BAR_BUTTON_RELIEF 1 | |
cc4cb755 GM |
2938 | |
2939 | /* The height in pixels of the default tool-bar images. */ | |
2940 | ||
2941 | #define DEFAULT_TOOL_BAR_IMAGE_HEIGHT 24 | |
5f5c8ee5 GM |
2942 | |
2943 | \f | |
2944 | /*********************************************************************** | |
a0816661 MB |
2945 | Terminal Capabilities |
2946 | ***********************************************************************/ | |
2947 | ||
8da139bc MB |
2948 | /* Each of these is a bit representing a terminal `capability' (bold, |
2949 | inverse, etc). They are or'd together to specify the set of | |
2950 | capabilities being queried for when calling `tty_capable_p' (which | |
2951 | returns true if the terminal supports all of them). */ | |
f0be5454 | 2952 | |
a0816661 MB |
2953 | #define TTY_CAP_INVERSE 0x01 |
2954 | #define TTY_CAP_UNDERLINE 0x02 | |
2955 | #define TTY_CAP_BOLD 0x04 | |
2956 | #define TTY_CAP_DIM 0x08 | |
2957 | #define TTY_CAP_BLINK 0x10 | |
2958 | #define TTY_CAP_ALT_CHARSET 0x20 | |
2959 | ||
2960 | \f | |
2961 | /*********************************************************************** | |
2962 | Function Prototypes | |
5f5c8ee5 GM |
2963 | ***********************************************************************/ |
2964 | ||
b7b65b15 EZ |
2965 | /* Defined in bidi.c */ |
2966 | ||
383e0970 J |
2967 | extern void bidi_init_it (EMACS_INT, EMACS_INT, struct bidi_it *); |
2968 | extern void bidi_move_to_visually_next (struct bidi_it *); | |
bea4f10c | 2969 | extern void bidi_paragraph_init (bidi_dir_t, struct bidi_it *, int); |
383e0970 | 2970 | extern int bidi_mirror_char (int); |
b7b65b15 | 2971 | |
5f5c8ee5 GM |
2972 | /* Defined in xdisp.c */ |
2973 | ||
d585695f | 2974 | struct glyph_row *row_containing_pos (struct window *, EMACS_INT, |
383e0970 J |
2975 | struct glyph_row *, |
2976 | struct glyph_row *, int); | |
2977 | EMACS_INT string_buffer_position (struct window *, Lisp_Object, | |
2978 | EMACS_INT); | |
2979 | int line_bottom_y (struct it *); | |
2980 | int display_prop_intangible_p (Lisp_Object); | |
2981 | void resize_echo_area_exactly (void); | |
2982 | int resize_mini_window (struct window *, int); | |
2983 | int try_window (Lisp_Object, struct text_pos, int); | |
2984 | void window_box (struct window *, int, int *, int *, int *, int *); | |
2985 | int window_box_height (struct window *); | |
2986 | int window_text_bottom_y (struct window *); | |
2987 | int window_box_width (struct window *, int); | |
2988 | int window_box_left (struct window *, int); | |
2989 | int window_box_left_offset (struct window *, int); | |
2990 | int window_box_right (struct window *, int); | |
2991 | int window_box_right_offset (struct window *, int); | |
2992 | void window_box_edges (struct window *, int, int *, int *, int *, int *); | |
2993 | int estimate_mode_line_height (struct frame *, enum face_id); | |
2994 | void pixel_to_glyph_coords (struct frame *, int, int, int *, int *, | |
2995 | NativeRectangle *, int); | |
2996 | int glyph_to_pixel_coords (struct window *, int, int, int *, int *); | |
2997 | void remember_mouse_glyph (struct frame *, int, int, NativeRectangle *); | |
2998 | ||
2999 | void mark_window_display_accurate (Lisp_Object, int); | |
3000 | void redisplay_preserve_echo_area (int); | |
3001 | int set_cursor_from_row (struct window *, struct glyph_row *, | |
ace1712c EZ |
3002 | struct glyph_matrix *, EMACS_INT, EMACS_INT, |
3003 | int, int); | |
383e0970 J |
3004 | void init_iterator (struct it *, struct window *, EMACS_INT, |
3005 | EMACS_INT, struct glyph_row *, enum face_id); | |
3006 | void init_iterator_to_row_start (struct it *, struct window *, | |
3007 | struct glyph_row *); | |
3008 | int get_next_display_element (struct it *); | |
3009 | void set_iterator_to_next (struct it *, int); | |
3010 | void start_display (struct it *, struct window *, struct text_pos); | |
a952d5f3 | 3011 | void move_it_to (struct it *, EMACS_INT, int, int, int, int); |
383e0970 J |
3012 | void move_it_vertically (struct it *, int); |
3013 | void move_it_vertically_backward (struct it *, int); | |
3014 | void move_it_by_lines (struct it *, int, int); | |
3015 | void move_it_past_eol (struct it *); | |
c876b227 SM |
3016 | void move_it_in_display_line (struct it *it, |
3017 | EMACS_INT to_charpos, int to_x, | |
3018 | enum move_operation_enum op); | |
383e0970 J |
3019 | int in_display_vector_p (struct it *); |
3020 | int frame_mode_line_height (struct frame *); | |
3021 | void highlight_trailing_whitespace (struct frame *, struct glyph_row *); | |
9ea173e8 | 3022 | extern Lisp_Object Qtool_bar; |
c1ff17c5 | 3023 | extern Lisp_Object Vshow_trailing_whitespace; |
5f380a5b | 3024 | extern int mode_line_in_non_selected_windows; |
5f5c8ee5 | 3025 | extern int redisplaying_p; |
583dba75 | 3026 | extern int help_echo_showing_p; |
e9e32f46 | 3027 | extern int current_mode_line_height, current_header_line_height; |
d74b2553 | 3028 | extern Lisp_Object help_echo_string, help_echo_window; |
0633d52c | 3029 | extern Lisp_Object help_echo_object, previous_help_echo_string; |
41118bd3 | 3030 | extern EMACS_INT help_echo_pos; |
d74b2553 KS |
3031 | extern struct frame *last_mouse_frame; |
3032 | extern int last_tool_bar_item; | |
92b23323 | 3033 | extern Lisp_Object Vmouse_autoselect_window; |
502b3128 | 3034 | extern int unibyte_display_via_language_environment; |
2a3bd2e1 | 3035 | extern EMACS_INT underline_minimum_offset; |
b2cca856 | 3036 | extern Lisp_Object Vglyphless_char_display; |
502b3128 | 3037 | |
383e0970 | 3038 | extern void reseat_at_previous_visible_line_start (struct it *); |
b18fad6d | 3039 | extern Lisp_Object lookup_glyphless_char_display (int, struct it *); |
383e0970 J |
3040 | extern int calc_pixel_width_or_height (double *, struct it *, Lisp_Object, |
3041 | struct font *, int, int *); | |
6b61353c | 3042 | |
d74b2553 | 3043 | #ifdef HAVE_WINDOW_SYSTEM |
5f5c8ee5 | 3044 | |
d5cc60b8 | 3045 | #if GLYPH_DEBUG |
383e0970 | 3046 | extern void dump_glyph_string (struct glyph_string *); |
d5cc60b8 KS |
3047 | #endif |
3048 | ||
383e0970 J |
3049 | extern void x_get_glyph_overhangs (struct glyph *, struct frame *, |
3050 | int *, int *); | |
3051 | extern void x_produce_glyphs (struct it *); | |
d5cc60b8 | 3052 | |
383e0970 J |
3053 | extern void x_write_glyphs (struct glyph *, int); |
3054 | extern void x_insert_glyphs (struct glyph *, int len); | |
3055 | extern void x_clear_end_of_line (int); | |
d74b2553 KS |
3056 | |
3057 | extern int x_stretch_cursor_p; | |
3058 | extern struct cursor_pos output_cursor; | |
3059 | ||
383e0970 J |
3060 | extern void x_fix_overlapping_area (struct window *, struct glyph_row *, |
3061 | enum glyph_row_area, int); | |
3062 | extern void draw_phys_cursor_glyph (struct window *, | |
3063 | struct glyph_row *, | |
3064 | enum draw_glyphs_face); | |
3065 | extern void get_phys_cursor_geometry (struct window *, struct glyph_row *, | |
3066 | struct glyph *, int *, int *, int *); | |
3067 | extern void erase_phys_cursor (struct window *); | |
3068 | extern void display_and_set_cursor (struct window *, | |
3069 | int, int, int, int, int); | |
3070 | ||
3071 | extern void set_output_cursor (struct cursor_pos *); | |
3072 | extern void x_cursor_to (int, int, int, int); | |
3073 | ||
3074 | extern void x_update_cursor (struct frame *, int); | |
3075 | extern void x_clear_cursor (struct window *); | |
3076 | extern void x_draw_vertical_border (struct window *w); | |
3077 | ||
383e0970 J |
3078 | extern int get_glyph_string_clip_rects (struct glyph_string *, |
3079 | NativeRectangle *, int); | |
3080 | extern void get_glyph_string_clip_rect (struct glyph_string *, | |
3081 | NativeRectangle *nr); | |
3082 | extern Lisp_Object find_hot_spot (Lisp_Object, int, int); | |
383e0970 J |
3083 | |
3084 | extern void handle_tool_bar_click (struct frame *, | |
3085 | int, int, int, unsigned int); | |
d74b2553 | 3086 | |
383e0970 J |
3087 | extern void expose_frame (struct frame *, int, int, int, int); |
3088 | extern int x_intersect_rectangles (XRectangle *, XRectangle *, | |
3089 | XRectangle *); | |
d009ae66 EZ |
3090 | #endif /* HAVE_WINDOW_SYSTEM */ |
3091 | ||
3092 | extern void frame_to_window_pixel_xy (struct window *, int *, int *); | |
3093 | extern void note_mouse_highlight (struct frame *, int, int); | |
3094 | extern void x_clear_window_mouse_face (struct window *); | |
3095 | extern void cancel_mouse_face (struct frame *); | |
28118eb6 EZ |
3096 | extern int clear_mouse_face (Mouse_HLInfo *); |
3097 | extern void show_mouse_face (Mouse_HLInfo *, enum draw_glyphs_face); | |
383e0970 | 3098 | extern int cursor_in_mouse_face_p (struct window *w); |
d009ae66 EZ |
3099 | extern void draw_row_with_mouse_face (struct window *, int, struct glyph_row *, |
3100 | int, int, enum draw_glyphs_face); | |
28118eb6 EZ |
3101 | extern void tty_draw_row_with_mouse_face (struct window *, struct glyph_row *, |
3102 | int, int, enum draw_glyphs_face); | |
d5cc60b8 | 3103 | |
6eff5c3d YM |
3104 | /* Flags passed to try_window. */ |
3105 | #define TRY_WINDOW_CHECK_MARGINS (1 << 0) | |
3106 | #define TRY_WINDOW_IGNORE_FONTS_CHANGE (1 << 1) | |
3107 | ||
6b61353c KH |
3108 | /* Defined in fringe.c */ |
3109 | ||
99f3388e | 3110 | extern Lisp_Object Voverflow_newline_into_fringe; |
e72d7335 | 3111 | int lookup_fringe_bitmap (Lisp_Object); |
383e0970 J |
3112 | void draw_fringe_bitmap (struct window *, struct glyph_row *, int); |
3113 | void draw_row_fringe_bitmaps (struct window *, struct glyph_row *); | |
3114 | int draw_window_fringes (struct window *, int); | |
3115 | int update_window_fringes (struct window *, int); | |
3116 | void compute_fringe_widths (struct frame *, int); | |
6b61353c | 3117 | |
8a8ce986 | 3118 | #ifdef WINDOWSNT |
383e0970 J |
3119 | void w32_init_fringe (struct redisplay_interface *); |
3120 | void w32_reset_fringes (void); | |
6b61353c | 3121 | #endif |
6b61353c KH |
3122 | /* Defined in image.c */ |
3123 | ||
3124 | #ifdef HAVE_WINDOW_SYSTEM | |
3125 | ||
383e0970 J |
3126 | extern int x_bitmap_height (struct frame *, int); |
3127 | extern int x_bitmap_width (struct frame *, int); | |
3128 | extern int x_bitmap_pixmap (struct frame *, int); | |
3129 | extern void x_reference_bitmap (struct frame *, int); | |
3130 | extern int x_create_bitmap_from_data (struct frame *, char *, | |
3131 | unsigned int, unsigned int); | |
3132 | extern int x_create_bitmap_from_file (struct frame *, Lisp_Object); | |
516c741d | 3133 | #if defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) |
383e0970 | 3134 | extern int x_create_bitmap_from_xpm_data (struct frame *f, char **bits); |
516c741d | 3135 | #endif |
6b61353c | 3136 | #ifndef x_destroy_bitmap |
383e0970 | 3137 | extern void x_destroy_bitmap (struct frame *, int); |
6b61353c | 3138 | #endif |
383e0970 J |
3139 | extern void x_destroy_all_bitmaps (Display_Info *); |
3140 | extern int x_create_bitmap_mask (struct frame * , int); | |
3141 | extern Lisp_Object x_find_image_file (Lisp_Object); | |
3142 | ||
3143 | void x_kill_gs_process (Pixmap, struct frame *); | |
3144 | struct image_cache *make_image_cache (void); | |
3145 | void free_image_cache (struct frame *); | |
3146 | void clear_image_caches (Lisp_Object); | |
3147 | void mark_image_cache (struct image_cache *); | |
3148 | int valid_image_p (Lisp_Object); | |
3149 | void prepare_image_for_display (struct frame *, struct image *); | |
3150 | int lookup_image (struct frame *, Lisp_Object); | |
3151 | ||
3152 | unsigned long image_background (struct image *, struct frame *, | |
3153 | XImagePtr_or_DC ximg); | |
3154 | int image_background_transparent (struct image *, struct frame *, | |
3155 | XImagePtr_or_DC mask); | |
3156 | ||
3157 | int image_ascent (struct image *, struct face *, struct glyph_slice *); | |
0633d52c | 3158 | |
6b61353c KH |
3159 | #endif |
3160 | ||
5f5c8ee5 GM |
3161 | /* Defined in sysdep.c */ |
3162 | ||
383e0970 J |
3163 | void get_tty_size (int, int *, int *); |
3164 | void request_sigio (void); | |
3165 | void unrequest_sigio (void); | |
3166 | int tabs_safe_p (int); | |
3167 | void init_baud_rate (int); | |
3168 | void init_sigio (int); | |
5f5c8ee5 | 3169 | |
8317e104 GM |
3170 | /* Defined in xfaces.c */ |
3171 | ||
2ad412d7 | 3172 | #ifdef HAVE_X_WINDOWS |
383e0970 | 3173 | void x_free_colors (struct frame *, unsigned long *, int); |
2ad412d7 | 3174 | #endif |
5f5c8ee5 | 3175 | |
383e0970 J |
3176 | void update_face_from_frame_parameter (struct frame *, Lisp_Object, |
3177 | Lisp_Object); | |
3178 | Lisp_Object tty_color_name (struct frame *, int); | |
3179 | void clear_face_cache (int); | |
3180 | unsigned long load_color (struct frame *, struct face *, Lisp_Object, | |
3181 | enum lface_attribute_index); | |
3182 | void unload_color (struct frame *, unsigned long); | |
3183 | char *choose_face_font (struct frame *, Lisp_Object *, Lisp_Object, | |
3184 | int *); | |
3185 | int ascii_face_of_lisp_face (struct frame *, int); | |
3186 | void prepare_face_for_display (struct frame *, struct face *); | |
3187 | int xstrcasecmp (const unsigned char *, const unsigned char *); | |
383e0970 J |
3188 | int lookup_named_face (struct frame *, Lisp_Object, int); |
3189 | int lookup_basic_face (struct frame *, int); | |
3190 | int smaller_face (struct frame *, int, int); | |
3191 | int face_with_height (struct frame *, int, int); | |
3192 | int lookup_derived_face (struct frame *, Lisp_Object, int, int); | |
3193 | void init_frame_faces (struct frame *); | |
3194 | void free_frame_faces (struct frame *); | |
3195 | void recompute_basic_faces (struct frame *); | |
3196 | int face_at_buffer_position (struct window *w, EMACS_INT pos, | |
3197 | EMACS_INT region_beg, EMACS_INT region_end, | |
3198 | EMACS_INT *endptr, EMACS_INT limit, | |
3199 | int mouse, int base_face_id); | |
3200 | int face_for_overlay_string (struct window *w, EMACS_INT pos, | |
3201 | EMACS_INT region_beg, EMACS_INT region_end, | |
3202 | EMACS_INT *endptr, EMACS_INT limit, | |
3203 | int mouse, Lisp_Object overlay); | |
3204 | int face_at_string_position (struct window *w, Lisp_Object string, | |
3205 | EMACS_INT pos, EMACS_INT bufpos, | |
3206 | EMACS_INT region_beg, EMACS_INT region_end, | |
3207 | EMACS_INT *endptr, enum face_id, int mouse); | |
3208 | int merge_faces (struct frame *, Lisp_Object, int, int); | |
3209 | int compute_char_face (struct frame *, int, Lisp_Object); | |
3210 | void free_all_realized_faces (Lisp_Object); | |
3211 | void free_realized_face (struct frame *, struct face *); | |
5f5c8ee5 | 3212 | extern Lisp_Object Qforeground_color, Qbackground_color; |
9b0ad2cb | 3213 | extern Lisp_Object Qframe_set_background_mode; |
f0ba2d22 | 3214 | extern char unspecified_fg[], unspecified_bg[]; |
5f5c8ee5 | 3215 | |
f2cec7a9 MB |
3216 | extern Lisp_Object Vface_remapping_alist; |
3217 | ||
5f5c8ee5 GM |
3218 | /* Defined in xfns.c */ |
3219 | ||
4397e334 | 3220 | #ifdef HAVE_X_WINDOWS |
383e0970 | 3221 | void gamma_correct (struct frame *, XColor *); |
4397e334 AI |
3222 | #endif |
3223 | #ifdef WINDOWSNT | |
383e0970 | 3224 | void gamma_correct (struct frame *, COLORREF *); |
4397e334 AI |
3225 | #endif |
3226 | ||
3227 | #ifdef HAVE_WINDOW_SYSTEM | |
3228 | ||
383e0970 J |
3229 | int x_screen_planes (struct frame *); |
3230 | void x_implicitly_set_name (struct frame *, Lisp_Object, Lisp_Object); | |
c26e3f6c | 3231 | |
4811586b | 3232 | extern Lisp_Object tip_frame; |
5f5c8ee5 | 3233 | extern Window tip_window; |
88a19a90 | 3234 | EXFUN (Fx_show_tip, 6); |
5f5c8ee5 | 3235 | EXFUN (Fx_hide_tip, 0); |
383e0970 J |
3236 | extern void start_hourglass (void); |
3237 | extern void cancel_hourglass (void); | |
3238 | extern int hourglass_started (void); | |
6a2b7977 | 3239 | extern int display_hourglass_p; |
1885ab29 AR |
3240 | extern int hourglass_shown_p; |
3241 | struct atimer; /* Defined in atimer.h. */ | |
3242 | /* If non-null, an asynchronous timer that, when it expires, displays | |
3243 | an hourglass cursor on all frames. */ | |
3244 | extern struct atimer *hourglass_atimer; | |
3245 | ||
6fb5f7da | 3246 | /* Each GUI implements these. FIXME: move into RIF. */ |
383e0970 J |
3247 | extern void show_hourglass (struct atimer *); |
3248 | extern void hide_hourglass (void); | |
5f5c8ee5 | 3249 | |
0ff7c0d4 MB |
3250 | /* Returns the background color of IMG, calculating one heuristically if |
3251 | necessary. If non-zero, XIMG is an existing XImage object to use for | |
3252 | the heuristic. */ | |
3253 | ||
3254 | #define IMAGE_BACKGROUND(img, f, ximg) \ | |
3255 | ((img)->background_valid \ | |
3256 | ? (img)->background \ | |
3257 | : image_background (img, f, ximg)) | |
3258 | ||
3259 | /* Returns true if IMG has a `transparent' background, using heuristics | |
3260 | to decide if necessary. If non-zero, MASK is an existing XImage | |
3261 | object to use for the heuristic. */ | |
3262 | ||
3263 | #define IMAGE_BACKGROUND_TRANSPARENT(img, f, mask) \ | |
3264 | ((img)->background_transparent_valid \ | |
3265 | ? (img)->background_transparent \ | |
3266 | : image_background_transparent (img, f, mask)) | |
3267 | ||
4397e334 | 3268 | #endif /* HAVE_WINDOW_SYSTEM */ |
5f5c8ee5 GM |
3269 | |
3270 | ||
3271 | /* Defined in xmenu.c */ | |
3272 | ||
383e0970 | 3273 | int popup_activated (void); |
5f5c8ee5 | 3274 | |
3f7267e7 | 3275 | /* Defined in dispnew.c */ |
5f5c8ee5 | 3276 | |
283c6e3e | 3277 | extern int inverse_video; |
383e0970 J |
3278 | extern int required_matrix_width (struct window *); |
3279 | extern int required_matrix_height (struct window *); | |
3280 | extern Lisp_Object buffer_posn_from_coords (struct window *, | |
3281 | int *, int *, | |
3282 | struct display_pos *, | |
3283 | Lisp_Object *, | |
3284 | int *, int *, int *, int *); | |
3285 | extern Lisp_Object mode_line_string (struct window *, enum window_part, | |
ace1712c | 3286 | int *, int *, EMACS_INT *, |
383e0970 J |
3287 | Lisp_Object *, |
3288 | int *, int *, int *, int *); | |
3289 | extern Lisp_Object marginal_area_string (struct window *, enum window_part, | |
ace1712c | 3290 | int *, int *, EMACS_INT *, |
383e0970 J |
3291 | Lisp_Object *, |
3292 | int *, int *, int *, int *); | |
3293 | extern void redraw_frame (struct frame *); | |
3294 | extern void redraw_garbaged_frames (void); | |
3295 | extern void cancel_line (int, struct frame *); | |
3296 | extern void init_desired_glyphs (struct frame *); | |
3297 | extern int scroll_frame_lines (struct frame *, int, int, int, int); | |
3298 | extern int update_frame (struct frame *, int, int); | |
3299 | extern int scrolling (struct frame *); | |
3300 | extern void bitch_at_user (void); | |
3301 | void adjust_glyphs (struct frame *); | |
3302 | void free_glyphs (struct frame *); | |
3303 | void free_window_matrices (struct window *); | |
3304 | void check_glyph_memory (void); | |
3305 | void mirrored_line_dance (struct glyph_matrix *, int, int, int *, char *); | |
3306 | void clear_glyph_matrix (struct glyph_matrix *); | |
3307 | void clear_current_matrices (struct frame *f); | |
3308 | void clear_desired_matrices (struct frame *); | |
3309 | void shift_glyph_matrix (struct window *, struct glyph_matrix *, | |
3310 | int, int, int); | |
3311 | void rotate_matrix (struct glyph_matrix *, int, int, int); | |
3312 | void increment_matrix_positions (struct glyph_matrix *, | |
ace1712c | 3313 | int, int, EMACS_INT, EMACS_INT); |
383e0970 | 3314 | void blank_row (struct window *, struct glyph_row *, int); |
ace1712c | 3315 | void increment_row_positions (struct glyph_row *, EMACS_INT, EMACS_INT); |
383e0970 J |
3316 | void enable_glyph_matrix_rows (struct glyph_matrix *, int, int, int); |
3317 | void clear_glyph_row (struct glyph_row *); | |
3318 | void prepare_desired_row (struct glyph_row *); | |
3319 | int line_hash_code (struct glyph_row *); | |
3320 | void set_window_update_flags (struct window *, int); | |
383e0970 | 3321 | void update_single_window (struct window *, int); |
383e0970 J |
3322 | void do_pending_window_change (int); |
3323 | void change_frame_size (struct frame *, int, int, int, int, int); | |
383e0970 J |
3324 | void init_display (void); |
3325 | void syms_of_display (void); | |
69a7a14d | 3326 | extern Lisp_Object Qredisplay_dont_pause; |
383e0970 | 3327 | void spec_glyph_lookup_face (struct window *, GLYPH *); |
ec5d8db7 | 3328 | |
ed8dad6b | 3329 | /* Defined in terminal.c */ |
5f5c8ee5 | 3330 | |
383e0970 J |
3331 | extern void ring_bell (struct frame *); |
3332 | extern void update_begin (struct frame *); | |
3333 | extern void update_end (struct frame *); | |
3334 | extern void set_terminal_window (struct frame *, int); | |
3335 | extern void cursor_to (struct frame *, int, int); | |
3336 | extern void raw_cursor_to (struct frame *, int, int); | |
3337 | extern void clear_to_end (struct frame *); | |
3338 | extern void clear_frame (struct frame *); | |
3339 | extern void clear_end_of_line (struct frame *, int); | |
3340 | extern void write_glyphs (struct frame *, struct glyph *, int); | |
3341 | extern void insert_glyphs (struct frame *, struct glyph *, int); | |
3342 | extern void delete_glyphs (struct frame *, int); | |
3343 | extern void ins_del_lines (struct frame *, int, int); | |
ed8dad6b | 3344 | |
383e0970 | 3345 | extern struct terminal *init_initial_terminal (void); |
ed8dad6b KL |
3346 | |
3347 | ||
3348 | /* Defined in term.c */ | |
3349 | ||
383e0970 J |
3350 | extern void tty_set_terminal_modes (struct terminal *); |
3351 | extern void tty_reset_terminal_modes (struct terminal *); | |
3352 | extern void tty_turn_off_insert (struct tty_display_info *); | |
3353 | extern void tty_turn_off_highlight (struct tty_display_info *); | |
8ea90aa3 DN |
3354 | extern int string_cost (const char *); |
3355 | extern int per_line_cost (const char *); | |
383e0970 J |
3356 | extern void calculate_costs (struct frame *); |
3357 | extern void produce_glyphs (struct it *); | |
3358 | extern void produce_special_glyphs (struct it *, enum display_element_type); | |
3359 | extern int tty_capable_p (struct tty_display_info *, unsigned, unsigned long, unsigned long); | |
9b2cd403 | 3360 | extern void set_tty_color_mode (struct tty_display_info *, struct frame *); |
383e0970 | 3361 | extern struct terminal *get_tty_terminal (Lisp_Object, int); |
8ea90aa3 | 3362 | extern struct terminal *get_named_tty (const char *); |
6ed8eeff | 3363 | EXFUN (Ftty_type, 1); |
383e0970 | 3364 | extern void create_tty_output (struct frame *); |
8ea90aa3 | 3365 | extern struct terminal *init_tty (const char *, const char *, int); |
b2fedb04 | 3366 | |
ec5d8db7 AS |
3367 | |
3368 | /* Defined in scroll.c */ | |
5f5c8ee5 | 3369 | |
383e0970 J |
3370 | extern int scrolling_max_lines_saved (int, int, int *, int *, int *); |
3371 | extern int scroll_cost (struct frame *, int, int, int); | |
3372 | extern void do_line_insertion_deletion_costs (struct frame *, char *, | |
3373 | char *, char *, char *, | |
3374 | char *, char *, int); | |
3375 | void scrolling_1 (struct frame *, int, int, int, int *, int *, int *, | |
3376 | int *, int); | |
87485d6f | 3377 | |
e6b3aecd KS |
3378 | /* Defined in frame.c */ |
3379 | ||
3380 | #ifdef HAVE_WINDOW_SYSTEM | |
3381 | ||
3382 | /* Types we might convert a resource string into. */ | |
3383 | enum resource_types | |
3384 | { | |
3385 | RES_TYPE_NUMBER, | |
3386 | RES_TYPE_FLOAT, | |
3387 | RES_TYPE_BOOLEAN, | |
3388 | RES_TYPE_STRING, | |
93318cbd JD |
3389 | RES_TYPE_SYMBOL, |
3390 | RES_TYPE_BOOLEAN_NUMBER | |
e6b3aecd KS |
3391 | }; |
3392 | ||
383e0970 | 3393 | extern Lisp_Object x_get_arg (Display_Info *, Lisp_Object, |
eec47d6b | 3394 | Lisp_Object, const char *, const char *class, |
383e0970 J |
3395 | enum resource_types); |
3396 | extern Lisp_Object x_frame_get_arg (struct frame *, Lisp_Object, | |
eec47d6b | 3397 | Lisp_Object, const char *, const char *, |
383e0970 | 3398 | enum resource_types); |
eec47d6b DN |
3399 | extern Lisp_Object x_frame_get_and_record_arg (struct frame *, Lisp_Object, |
3400 | Lisp_Object, | |
3401 | const char *, const char *, | |
383e0970 J |
3402 | enum resource_types); |
3403 | extern Lisp_Object x_default_parameter (struct frame *, Lisp_Object, | |
3404 | Lisp_Object, Lisp_Object, | |
eec47d6b | 3405 | const char *, const char *, |
383e0970 | 3406 | enum resource_types); |
e6b3aecd KS |
3407 | |
3408 | #endif /* HAVE_WINDOW_SYSTEM */ | |
3409 | ||
5f5c8ee5 | 3410 | #endif /* not DISPEXTERN_H_INCLUDED */ |
6b61353c KH |
3411 | |
3412 | /* arch-tag: c65c475f-1c1e-4534-8795-990b8509fd65 | |
3413 | (do not change this comment) */ |