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, |
76b6f707 | 3 | 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
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 | ||
dfbe5d05 KS |
72 | #ifndef NativeRectangle |
73 | #define NativeRectangle int | |
74 | #endif | |
75 | ||
5f5c8ee5 GM |
76 | /* Structure forward declarations. Some are here because function |
77 | prototypes below reference structure types before their definition | |
78 | in this file. Some are here because not every file including | |
79 | dispextern.h also includes frame.h and windows.h. */ | |
80 | ||
81 | struct glyph; | |
82 | struct glyph_row; | |
83 | struct glyph_matrix; | |
84 | struct glyph_pool; | |
85 | struct frame; | |
86 | struct window; | |
87 | ||
88 | ||
d74b2553 KS |
89 | /* Values returned from coordinates_in_window. */ |
90 | ||
91 | enum window_part | |
92 | { | |
93 | ON_NOTHING, | |
94 | ON_TEXT, | |
95 | ON_MODE_LINE, | |
96 | ON_VERTICAL_BORDER, | |
97 | ON_HEADER_LINE, | |
98 | ON_LEFT_FRINGE, | |
99 | ON_RIGHT_FRINGE, | |
100 | ON_LEFT_MARGIN, | |
ab431b61 RS |
101 | ON_RIGHT_MARGIN, |
102 | ON_SCROLL_BAR | |
d74b2553 KS |
103 | }; |
104 | ||
6b61353c | 105 | /* Number of bits allocated to store fringe bitmap numbers. */ |
b3b08f03 | 106 | #define FRINGE_ID_BITS 16 |
6b61353c | 107 | |
d74b2553 | 108 | |
5f5c8ee5 | 109 | \f |
5f5c8ee5 GM |
110 | /*********************************************************************** |
111 | Debugging | |
112 | ***********************************************************************/ | |
113 | ||
114 | /* If GLYPH_DEBUG is non-zero, additional checks are activated. Turn | |
115 | it off by defining the macro GLYPH_DEBUG to zero. */ | |
116 | ||
117 | #ifndef GLYPH_DEBUG | |
118 | #define GLYPH_DEBUG 0 | |
119 | #endif | |
120 | ||
139c65cf KS |
121 | /* If XASSERTS is non-zero, additional consistency checks are activated. |
122 | Turn it off by defining the macro XASSERTS to zero. */ | |
123 | ||
124 | #ifndef XASSERTS | |
125 | #define XASSERTS 0 | |
126 | #endif | |
127 | ||
5f5c8ee5 GM |
128 | /* Macros to include code only if GLYPH_DEBUG != 0. */ |
129 | ||
130 | #if GLYPH_DEBUG | |
131 | #define IF_DEBUG(X) X | |
5f5c8ee5 GM |
132 | #else |
133 | #define IF_DEBUG(X) (void) 0 | |
5f5c8ee5 GM |
134 | #endif |
135 | ||
139c65cf | 136 | #if XASSERTS |
d78f30b8 | 137 | #define xassert(X) do {if (!(X)) abort ();} while (0) |
139c65cf KS |
138 | #else |
139 | #define xassert(X) (void) 0 | |
140 | #endif | |
d78f30b8 | 141 | |
5f5c8ee5 GM |
142 | /* Macro for displaying traces of redisplay. If Emacs was compiled |
143 | with GLYPH_DEBUG != 0, the variable trace_redisplay_p can be set to | |
144 | a non-zero value in debugging sessions to activate traces. */ | |
145 | ||
146 | #if GLYPH_DEBUG | |
147 | ||
148 | extern int trace_redisplay_p; | |
149 | #include <stdio.h> | |
150 | ||
151 | #define TRACE(X) \ | |
152 | if (trace_redisplay_p) \ | |
153 | fprintf X; \ | |
154 | else \ | |
155 | (void) 0 | |
156 | ||
157 | #else /* GLYPH_DEBUG == 0 */ | |
158 | ||
159 | #define TRACE(X) (void) 0 | |
160 | ||
161 | #endif /* GLYPH_DEBUG == 0 */ | |
162 | ||
177c0ea7 | 163 | |
5f5c8ee5 GM |
164 | \f |
165 | /*********************************************************************** | |
166 | Text positions | |
167 | ***********************************************************************/ | |
168 | ||
169 | /* Starting with Emacs 20.3, characters from strings and buffers have | |
170 | both a character and a byte position associated with them. The | |
171 | following structure holds such a pair of positions. */ | |
177c0ea7 | 172 | |
5f5c8ee5 GM |
173 | struct text_pos |
174 | { | |
175 | /* Character position. */ | |
05fe33ff | 176 | EMACS_INT charpos; |
5f5c8ee5 GM |
177 | |
178 | /* Corresponding byte position. */ | |
05fe33ff | 179 | EMACS_INT bytepos; |
5f5c8ee5 GM |
180 | }; |
181 | ||
182 | /* Access character and byte position of POS in a functional form. */ | |
183 | ||
184 | #define BYTEPOS(POS) (POS).bytepos | |
185 | #define CHARPOS(POS) (POS).charpos | |
186 | ||
187 | /* Set character position of POS to CHARPOS, byte position to BYTEPOS. */ | |
188 | ||
189 | #define SET_TEXT_POS(POS, CHARPOS, BYTEPOS) \ | |
190 | ((POS).charpos = (CHARPOS), (POS).bytepos = BYTEPOS) | |
191 | ||
192 | /* Increment text position POS. */ | |
193 | ||
7bed37e4 | 194 | #define INC_TEXT_POS(POS, MULTIBYTE_P) \ |
5f5c8ee5 GM |
195 | do \ |
196 | { \ | |
197 | ++(POS).charpos; \ | |
7bed37e4 GM |
198 | if (MULTIBYTE_P) \ |
199 | INC_POS ((POS).bytepos); \ | |
200 | else \ | |
201 | ++(POS).bytepos; \ | |
5f5c8ee5 GM |
202 | } \ |
203 | while (0) | |
204 | ||
205 | /* Decrement text position POS. */ | |
206 | ||
7bed37e4 | 207 | #define DEC_TEXT_POS(POS, MULTIBYTE_P) \ |
5f5c8ee5 GM |
208 | do \ |
209 | { \ | |
210 | --(POS).charpos; \ | |
7bed37e4 GM |
211 | if (MULTIBYTE_P) \ |
212 | DEC_POS ((POS).bytepos); \ | |
213 | else \ | |
214 | --(POS).bytepos; \ | |
5f5c8ee5 GM |
215 | } \ |
216 | while (0) | |
217 | ||
218 | /* Set text position POS from marker MARKER. */ | |
219 | ||
220 | #define SET_TEXT_POS_FROM_MARKER(POS, MARKER) \ | |
221 | (CHARPOS (POS) = marker_position ((MARKER)), \ | |
222 | BYTEPOS (POS) = marker_byte_position ((MARKER))) | |
223 | ||
224 | /* Set marker MARKER from text position POS. */ | |
225 | ||
226 | #define SET_MARKER_FROM_TEXT_POS(MARKER, POS) \ | |
227 | set_marker_both ((MARKER), Qnil, CHARPOS ((POS)), BYTEPOS ((POS))) | |
177c0ea7 | 228 | |
5f5c8ee5 GM |
229 | /* Value is non-zero if character and byte positions of POS1 and POS2 |
230 | are equal. */ | |
231 | ||
232 | #define TEXT_POS_EQUAL_P(POS1, POS2) \ | |
233 | ((POS1).charpos == (POS2).charpos \ | |
234 | && (POS1).bytepos == (POS2).bytepos) | |
235 | ||
236 | /* When rendering glyphs, redisplay scans string or buffer text, | |
237 | overlay strings in that text, and does display table or control | |
238 | character translations. The following structure captures a | |
239 | position taking all this into account. */ | |
240 | ||
241 | struct display_pos | |
242 | { | |
243 | /* Buffer or string position. */ | |
244 | struct text_pos pos; | |
245 | ||
246 | /* If this is a position in an overlay string, overlay_string_index | |
247 | is the index of that overlay string in the sequence of overlay | |
248 | strings at `pos' in the order redisplay processes them. A value | |
249 | < 0 means that this is not a position in an overlay string. */ | |
250 | int overlay_string_index; | |
251 | ||
252 | /* If this is a position in an overlay string, string_pos is the | |
253 | position within that string. */ | |
254 | struct text_pos string_pos; | |
255 | ||
256 | /* If the character at the position above is a control character or | |
257 | has a display table entry, dpvec_index is an index in the display | |
258 | table or control character translation of that character. A | |
259 | value < 0 means this is not a position in such a translation. */ | |
260 | int dpvec_index; | |
261 | }; | |
262 | ||
263 | ||
264 | \f | |
265 | /*********************************************************************** | |
266 | Glyphs | |
267 | ***********************************************************************/ | |
268 | ||
269 | /* Enumeration of glyph types. Glyph structures contain a type field | |
270 | containing one of the enumerators defined here. */ | |
271 | ||
272 | enum glyph_type | |
273 | { | |
274 | /* Glyph describes a character. */ | |
177c0ea7 | 275 | CHAR_GLYPH, |
5f5c8ee5 | 276 | |
a88c7fcd | 277 | /* Glyph describes a static composition. */ |
a90fbbf6 KH |
278 | COMPOSITE_GLYPH, |
279 | ||
5f5c8ee5 GM |
280 | /* Glyph describes an image. */ |
281 | IMAGE_GLYPH, | |
282 | ||
283 | /* Glyph is a space of fractional width and/or height. */ | |
284 | STRETCH_GLYPH | |
285 | }; | |
286 | ||
287 | ||
0633d52c KS |
288 | /* Structure describing how to use partial glyphs (images slicing) */ |
289 | ||
290 | struct glyph_slice | |
291 | { | |
292 | unsigned x : 16; | |
293 | unsigned y : 16; | |
294 | unsigned width : 16; | |
295 | unsigned height : 16; | |
296 | }; | |
297 | ||
298 | ||
827503c6 GM |
299 | /* Glyphs. |
300 | ||
301 | Be extra careful when changing this structure! Esp. make sure that | |
d5cc60b8 | 302 | functions producing glyphs, like append_glyph, fill ALL of the |
827503c6 GM |
303 | glyph structure, and that GLYPH_EQUAL_P compares all |
304 | display-relevant members of glyphs (not to imply that these are the | |
305 | only things to check when you add a member). */ | |
5f5c8ee5 GM |
306 | |
307 | struct glyph | |
308 | { | |
309 | /* Position from which this glyph was drawn. If `object' below is a | |
310 | Lisp string, this is a position in that string. If it is a | |
311 | buffer, this is a position in that buffer. A value of -1 | |
312 | together with a null object means glyph is a truncation glyph at | |
313 | the start of a row. */ | |
05fe33ff | 314 | EMACS_INT charpos; |
5f5c8ee5 GM |
315 | |
316 | /* Lisp object source of this glyph. Currently either a buffer or | |
177c0ea7 | 317 | a string, if the glyph was produced from characters which came from |
f920e581 GM |
318 | a buffer or a string; or 0 if the glyph was inserted by redisplay |
319 | for its own purposes such as padding. */ | |
5f5c8ee5 GM |
320 | Lisp_Object object; |
321 | ||
322 | /* Width in pixels. */ | |
323 | short pixel_width; | |
324 | ||
6b61353c KH |
325 | /* Ascent and descent in pixels. */ |
326 | short ascent, descent; | |
327 | ||
5f5c8ee5 GM |
328 | /* Vertical offset. If < 0, the glyph is displayed raised, if > 0 |
329 | the glyph is displayed lowered. */ | |
330 | short voffset; | |
331 | ||
332 | /* Which kind of glyph this is---character, image etc. Value | |
333 | should be an enumerator of type enum glyph_type. */ | |
334 | unsigned type : 2; | |
335 | ||
336 | /* 1 means this glyph was produced from multibyte text. Zero | |
337 | means it was produced from unibyte text, i.e. charsets aren't | |
338 | applicable, and encoding is not performed. */ | |
339 | unsigned multibyte_p : 1; | |
340 | ||
341 | /* Non-zero means draw a box line at the left or right side of this | |
342 | glyph. This is part of the implementation of the face attribute | |
343 | `:box'. */ | |
344 | unsigned left_box_line_p : 1; | |
345 | unsigned right_box_line_p : 1; | |
346 | ||
2febf6e0 GM |
347 | /* Non-zero means this glyph's physical ascent or descent is greater |
348 | than its logical ascent/descent, i.e. it may potentially overlap | |
349 | glyphs above or below it. */ | |
350 | unsigned overlaps_vertically_p : 1; | |
351 | ||
ae185452 KH |
352 | /* For terminal frames, 1 means glyph is a padding glyph. Padding |
353 | glyphs are used for characters whose visual shape consists of | |
354 | more than one glyph (e.g. Asian characters). All but the first | |
355 | glyph of such a glyph sequence have the padding_p flag set. This | |
356 | flag is used only to minimize code changes. A better way would | |
357 | probably be to use the width field of glyphs to express padding. | |
358 | ||
359 | For graphic frames, 1 means the pixel width of the glyph in a | |
360 | font is 0, but 1-pixel is padded on displaying for correct cursor | |
361 | displaying. The member `pixel_width' above is set to 1. */ | |
3305fc6a KH |
362 | unsigned padding_p : 1; |
363 | ||
f920e581 GM |
364 | /* 1 means the actual glyph is not available, draw a box instead. |
365 | This can happen when a font couldn't be loaded, or a character | |
366 | doesn't have a glyph in a font. */ | |
b3091a23 KH |
367 | unsigned glyph_not_available_p : 1; |
368 | ||
c4f4682b MB |
369 | |
370 | /* Non-zero means don't display cursor here. */ | |
371 | unsigned avoid_cursor_p : 1; | |
372 | ||
e69a9370 | 373 | /* Resolved bidirectional level of this character [0..63]. */ |
29e3d8d1 | 374 | unsigned resolved_level : 5; |
5e65aec0 EZ |
375 | |
376 | /* Resolved bidirectional type of this character, see enum | |
29e3d8d1 EZ |
377 | bidi_type_t below. Note that according to UAX#9, only some |
378 | values (STRONG_L, STRONG_R, WEAK_AN, WEAK_EN, WEAK_BN, and | |
379 | NEUTRAL_B) can appear in the resolved type, so we only reserve | |
380 | space for those that can. */ | |
381 | unsigned bidi_type : 3; | |
5e65aec0 | 382 | |
c4f4682b | 383 | #define FACE_ID_BITS 20 |
6b61353c | 384 | |
c68b9c2f RS |
385 | /* Face of the glyph. This is a realized face ID, |
386 | an index in the face cache of the frame. */ | |
6b61353c | 387 | unsigned face_id : FACE_ID_BITS; |
3305fc6a | 388 | |
d5cc60b8 | 389 | /* Type of font used to display the character glyph. May be used to |
b40b05b6 | 390 | determine which set of functions to use to obtain font metrics |
d5cc60b8 KS |
391 | for the glyph. On W32, value should be an enumerator of the type |
392 | w32_char_font_type. Otherwise it equals FONT_TYPE_UNKNOWN. */ | |
393 | unsigned font_type : 3; | |
b40b05b6 | 394 | |
0633d52c KS |
395 | struct glyph_slice slice; |
396 | ||
5f5c8ee5 GM |
397 | /* A union of sub-structures for different glyph types. */ |
398 | union | |
399 | { | |
3305fc6a KH |
400 | /* Character code for character glyphs (type == CHAR_GLYPH). */ |
401 | unsigned ch; | |
5f5c8ee5 | 402 | |
a88c7fcd KH |
403 | /* Sub-structures for type == COMPOSITION_GLYPH. */ |
404 | struct | |
405 | { | |
406 | /* Flag to tell if the composition is automatic or not. */ | |
407 | unsigned automatic : 1; | |
408 | /* ID of the composition. */ | |
409 | unsigned id : 23; | |
20200aaa | 410 | /* Start and end indices of glyphs of the composition. */ |
a88c7fcd KH |
411 | unsigned from : 4; |
412 | unsigned to : 4; | |
413 | } cmp; | |
a90fbbf6 | 414 | |
3305fc6a KH |
415 | /* Image ID for image glyphs (type == IMAGE_GLYPH). */ |
416 | unsigned img_id; | |
5f5c8ee5 GM |
417 | |
418 | /* Sub-structure for type == STRETCH_GLYPH. */ | |
419 | struct | |
420 | { | |
421 | /* The height of the glyph. */ | |
3305fc6a | 422 | unsigned height : 16; |
5f5c8ee5 GM |
423 | |
424 | /* The ascent of the glyph. */ | |
3305fc6a | 425 | unsigned ascent : 16; |
5f5c8ee5 GM |
426 | } |
427 | stretch; | |
177c0ea7 | 428 | |
5f5c8ee5 GM |
429 | /* Used to compare all bit-fields above in one step. */ |
430 | unsigned val; | |
431 | } u; | |
432 | }; | |
433 | ||
434 | ||
d5cc60b8 KS |
435 | /* Default value of the glyph font_type field. */ |
436 | ||
437 | #define FONT_TYPE_UNKNOWN 0 | |
438 | ||
5f5c8ee5 GM |
439 | /* Is GLYPH a space? */ |
440 | ||
441 | #define CHAR_GLYPH_SPACE_P(GLYPH) \ | |
98329671 | 442 | ((GLYPH).u.ch == SPACEGLYPH && (GLYPH).face_id == DEFAULT_FACE_ID) |
5f5c8ee5 | 443 | |
0633d52c KS |
444 | /* Are glyph slices of glyphs *X and *Y equal */ |
445 | ||
446 | #define GLYPH_SLICE_EQUAL_P(X, Y) \ | |
447 | ((X)->slice.x == (Y)->slice.x \ | |
448 | && (X)->slice.y == (Y)->slice.y \ | |
449 | && (X)->slice.width == (Y)->slice.width \ | |
450 | && (X)->slice.height == (Y)->slice.height) | |
451 | ||
827503c6 | 452 | /* Are glyphs *X and *Y displayed equal? */ |
177c0ea7 | 453 | |
5f5c8ee5 GM |
454 | #define GLYPH_EQUAL_P(X, Y) \ |
455 | ((X)->type == (Y)->type \ | |
456 | && (X)->u.val == (Y)->u.val \ | |
0633d52c | 457 | && GLYPH_SLICE_EQUAL_P (X, Y) \ |
3305fc6a KH |
458 | && (X)->face_id == (Y)->face_id \ |
459 | && (X)->padding_p == (Y)->padding_p \ | |
5f5c8ee5 GM |
460 | && (X)->left_box_line_p == (Y)->left_box_line_p \ |
461 | && (X)->right_box_line_p == (Y)->right_box_line_p \ | |
726950c4 GM |
462 | && (X)->voffset == (Y)->voffset \ |
463 | && (X)->pixel_width == (Y)->pixel_width) | |
5f5c8ee5 | 464 | |
3305fc6a KH |
465 | /* Are character codes, faces, padding_ps of glyphs *X and *Y equal? */ |
466 | ||
467 | #define GLYPH_CHAR_AND_FACE_EQUAL_P(X, Y) \ | |
468 | ((X)->u.ch == (Y)->u.ch \ | |
469 | && (X)->face_id == (Y)->face_id \ | |
470 | && (X)->padding_p == (Y)->padding_p) | |
471 | ||
5f5c8ee5 GM |
472 | /* Fill a character glyph GLYPH. CODE, FACE_ID, PADDING_P correspond |
473 | to the bits defined for the typedef `GLYPH' in lisp.h. */ | |
177c0ea7 | 474 | |
5f5c8ee5 GM |
475 | #define SET_CHAR_GLYPH(GLYPH, CODE, FACE_ID, PADDING_P) \ |
476 | do \ | |
477 | { \ | |
3305fc6a KH |
478 | (GLYPH).u.ch = (CODE); \ |
479 | (GLYPH).face_id = (FACE_ID); \ | |
480 | (GLYPH).padding_p = (PADDING_P); \ | |
5f5c8ee5 GM |
481 | } \ |
482 | while (0) | |
483 | ||
484 | /* Fill a character type glyph GLYPH from a glyph typedef FROM as | |
485 | defined in lisp.h. */ | |
177c0ea7 | 486 | |
5f5c8ee5 GM |
487 | #define SET_CHAR_GLYPH_FROM_GLYPH(GLYPH, FROM) \ |
488 | SET_CHAR_GLYPH ((GLYPH), \ | |
652df850 KS |
489 | GLYPH_CHAR ((FROM)), \ |
490 | GLYPH_FACE ((FROM)), \ | |
3305fc6a | 491 | 0) |
5f5c8ee5 | 492 | |
3305fc6a KH |
493 | /* Construct a glyph code from a character glyph GLYPH. If the |
494 | character is multibyte, return -1 as we can't use glyph table for a | |
54bff0bd | 495 | multibyte character. */ |
177c0ea7 | 496 | |
652df850 KS |
497 | #define SET_GLYPH_FROM_CHAR_GLYPH(G, GLYPH) \ |
498 | do \ | |
499 | { \ | |
500 | if ((GLYPH).u.ch < 256) \ | |
501 | SET_GLYPH ((G), (GLYPH).u.ch, ((GLYPH).face_id)); \ | |
502 | else \ | |
503 | SET_GLYPH ((G), -1, 0); \ | |
504 | } \ | |
505 | while (0) | |
506 | ||
507 | #define GLYPH_INVALID_P(GLYPH) (GLYPH_CHAR (GLYPH) < 0) | |
5f5c8ee5 GM |
508 | |
509 | /* Is GLYPH a padding glyph? */ | |
177c0ea7 | 510 | |
3305fc6a | 511 | #define CHAR_GLYPH_PADDING_P(GLYPH) (GLYPH).padding_p |
5f5c8ee5 GM |
512 | |
513 | ||
514 | ||
515 | \f | |
516 | /*********************************************************************** | |
517 | Glyph Pools | |
518 | ***********************************************************************/ | |
519 | ||
520 | /* Glyph Pool. | |
521 | ||
522 | Glyph memory for frame-based redisplay is allocated from the heap | |
523 | in one vector kept in a glyph pool structure which is stored with | |
524 | the frame. The size of the vector is made large enough to cover | |
525 | all windows on the frame. | |
526 | ||
527 | Both frame and window glyph matrices reference memory from a glyph | |
528 | pool in frame-based redisplay. | |
529 | ||
530 | In window-based redisplay, no glyphs pools exist; windows allocate | |
531 | and free their glyph memory themselves. */ | |
532 | ||
533 | struct glyph_pool | |
534 | { | |
535 | /* Vector of glyphs allocated from the heap. */ | |
536 | struct glyph *glyphs; | |
537 | ||
538 | /* Allocated size of `glyphs'. */ | |
539 | int nglyphs; | |
540 | ||
541 | /* Number of rows and columns in a matrix. */ | |
542 | int nrows, ncolumns; | |
543 | }; | |
544 | ||
545 | ||
546 | \f | |
547 | /*********************************************************************** | |
548 | Glyph Matrix | |
549 | ***********************************************************************/ | |
550 | ||
551 | /* Glyph Matrix. | |
552 | ||
553 | Three kinds of glyph matrices exist: | |
554 | ||
555 | 1. Frame glyph matrices. These are used for terminal frames whose | |
556 | redisplay needs a view of the whole screen due to limited terminal | |
557 | capabilities. Frame matrices are used only in the update phase | |
558 | of redisplay. They are built in update_frame and not used after | |
559 | the update has been performed. | |
560 | ||
561 | 2. Window glyph matrices on frames having frame glyph matrices. | |
562 | Such matrices are sub-matrices of their corresponding frame matrix, | |
563 | i.e. frame glyph matrices and window glyph matrices share the same | |
564 | glyph memory which is allocated in form of a glyph_pool structure. | |
565 | Glyph rows in such a window matrix are slices of frame matrix rows. | |
566 | ||
567 | 2. Free-standing window glyph matrices managing their own glyph | |
568 | storage. This form is used in window-based redisplay which | |
569 | includes variable width and height fonts etc. | |
570 | ||
571 | The size of a window's row vector depends on the height of fonts | |
572 | defined on its frame. It is chosen so that the vector is large | |
573 | enough to describe all lines in a window when it is displayed in | |
574 | the smallest possible character size. When new fonts are loaded, | |
575 | or window sizes change, the row vector is adjusted accordingly. */ | |
576 | ||
577 | struct glyph_matrix | |
578 | { | |
579 | /* The pool from which glyph memory is allocated, if any. This is | |
580 | null for frame matrices and for window matrices managing their | |
581 | own storage. */ | |
582 | struct glyph_pool *pool; | |
583 | ||
584 | /* Vector of glyph row structures. The row at nrows - 1 is reserved | |
585 | for the mode line. */ | |
586 | struct glyph_row *rows; | |
587 | ||
588 | /* Number of elements allocated for the vector rows above. */ | |
589 | int rows_allocated; | |
590 | ||
591 | /* The number of rows used by the window if all lines were displayed | |
592 | with the smallest possible character height. */ | |
593 | int nrows; | |
594 | ||
595 | /* Origin within the frame matrix if this is a window matrix on a | |
596 | frame having a frame matrix. Both values are zero for | |
597 | window-based redisplay. */ | |
598 | int matrix_x, matrix_y; | |
599 | ||
600 | /* Width and height of the matrix in columns and rows. */ | |
601 | int matrix_w, matrix_h; | |
602 | ||
6df72db9 | 603 | /* If this structure describes a window matrix of window W, |
87388f9d KS |
604 | window_left_col is the value of W->left_col, window_top_line the |
605 | value of W->top_line, window_height and window_width are width and | |
606 | height of W, as returned by window_box, and window_vscroll is the | |
607 | value of W->vscroll at the time the matrix was last adjusted. | |
608 | Only set for window-based redisplay. */ | |
609 | int window_left_col, window_top_line; | |
610 | int window_height, window_width; | |
611 | int window_vscroll; | |
5f5c8ee5 GM |
612 | |
613 | /* Number of glyphs reserved for left and right marginal areas when | |
614 | the matrix was last adjusted. */ | |
615 | int left_margin_glyphs, right_margin_glyphs; | |
616 | ||
617 | /* Flag indicating that scrolling should not be tried in | |
618 | update_window. This flag is set by functions like try_window_id | |
619 | which do their own scrolling. */ | |
620 | unsigned no_scrolling_p : 1; | |
621 | ||
622 | /* Non-zero means window displayed in this matrix has a top mode | |
623 | line. */ | |
045dee35 | 624 | unsigned header_line_p : 1; |
5f5c8ee5 GM |
625 | |
626 | #ifdef GLYPH_DEBUG | |
627 | /* A string identifying the method used to display the matrix. */ | |
628 | char method[512]; | |
629 | #endif | |
2201e367 | 630 | |
a36d22d2 GM |
631 | /* The buffer this matrix displays. Set in |
632 | mark_window_display_accurate_1. */ | |
2201e367 GM |
633 | struct buffer *buffer; |
634 | ||
a36d22d2 GM |
635 | /* Values of BEGV and ZV as of last redisplay. Set in |
636 | mark_window_display_accurate_1. */ | |
2201e367 | 637 | int begv, zv; |
5f5c8ee5 GM |
638 | }; |
639 | ||
640 | ||
641 | /* Check that glyph pointers stored in glyph rows of MATRIX are okay. | |
642 | This aborts if any pointer is found twice. */ | |
643 | ||
644 | #if GLYPH_DEBUG | |
645 | void check_matrix_pointer_lossage P_ ((struct glyph_matrix *)); | |
646 | #define CHECK_MATRIX(MATRIX) check_matrix_pointer_lossage ((MATRIX)) | |
647 | #else | |
648 | #define CHECK_MATRIX(MATRIX) (void) 0 | |
649 | #endif | |
650 | ||
651 | ||
652 | \f | |
653 | /*********************************************************************** | |
654 | Glyph Rows | |
655 | ***********************************************************************/ | |
656 | ||
657 | /* Area in window glyph matrix. If values are added or removed, the | |
658 | function mark_object in alloc.c has to be changed. */ | |
659 | ||
660 | enum glyph_row_area | |
661 | { | |
662 | LEFT_MARGIN_AREA, | |
663 | TEXT_AREA, | |
664 | RIGHT_MARGIN_AREA, | |
665 | LAST_AREA | |
666 | }; | |
667 | ||
668 | ||
669 | /* Rows of glyphs in a windows or frame glyph matrix. | |
670 | ||
671 | Each row is partitioned into three areas. The start and end of | |
672 | each area is recorded in a pointer as shown below. | |
177c0ea7 | 673 | |
5f5c8ee5 GM |
674 | +--------------------+-------------+---------------------+ |
675 | | left margin area | text area | right margin area | | |
676 | +--------------------+-------------+---------------------+ | |
677 | | | | | | |
678 | glyphs[LEFT_MARGIN_AREA] glyphs[RIGHT_MARGIN_AREA] | |
679 | | | | |
680 | glyphs[TEXT_AREA] | | |
177c0ea7 | 681 | glyphs[LAST_AREA] |
5f5c8ee5 GM |
682 | |
683 | Rows in frame matrices reference glyph memory allocated in a frame | |
684 | glyph pool (see the description of struct glyph_pool). Rows in | |
685 | window matrices on frames having frame matrices reference slices of | |
686 | the glyphs of corresponding rows in the frame matrix. | |
177c0ea7 | 687 | |
5f5c8ee5 GM |
688 | Rows in window matrices on frames having no frame matrices point to |
689 | glyphs allocated from the heap via xmalloc; | |
690 | glyphs[LEFT_MARGIN_AREA] is the start address of the allocated | |
691 | glyph structure array. */ | |
692 | ||
693 | struct glyph_row | |
694 | { | |
695 | /* Pointers to beginnings of areas. The end of an area A is found at | |
696 | A + 1 in the vector. The last element of the vector is the end | |
697 | of the whole row. | |
698 | ||
699 | Kludge alert: Even if used[TEXT_AREA] == 0, glyphs[TEXT_AREA][0]'s | |
700 | position field is used. It is -1 if this row does not correspond | |
701 | to any text; it is some buffer position if the row corresponds to | |
702 | an empty display line that displays a line end. This is what old | |
703 | redisplay used to do. (Except in code for terminal frames, this | |
54bff0bd | 704 | kludge is no longer used, I believe. --gerd). |
5f5c8ee5 GM |
705 | |
706 | See also start, end, displays_text_p and ends_at_zv_p for cleaner | |
707 | ways to do it. The special meaning of positions 0 and -1 will be | |
708 | removed some day, so don't use it in new code. */ | |
709 | struct glyph *glyphs[1 + LAST_AREA]; | |
710 | ||
711 | /* Number of glyphs actually filled in areas. */ | |
712 | short used[LAST_AREA]; | |
713 | ||
714 | /* Window-relative x and y-position of the top-left corner of this | |
1ea40aa2 | 715 | row. If y < 0, this means that eabs (y) pixels of the row are |
5f5c8ee5 | 716 | invisible because it is partially visible at the top of a window. |
1ea40aa2 | 717 | If x < 0, this means that eabs (x) pixels of the first glyph of |
5f5c8ee5 GM |
718 | the text area of the row are invisible because the glyph is |
719 | partially visible. */ | |
720 | int x, y; | |
721 | ||
722 | /* Width of the row in pixels without taking face extension at the | |
6332ca8a GM |
723 | end of the row into account, and without counting truncation |
724 | and continuation glyphs at the end of a row on ttys. */ | |
5f5c8ee5 GM |
725 | int pixel_width; |
726 | ||
2febf6e0 GM |
727 | /* Logical ascent/height of this line. The value of ascent is zero |
728 | and height is 1 on terminal frames. */ | |
5f5c8ee5 GM |
729 | int ascent, height; |
730 | ||
2febf6e0 GM |
731 | /* Physical ascent/height of this line. If max_ascent > ascent, |
732 | this line overlaps the line above it on the display. Otherwise, | |
733 | if max_height > height, this line overlaps the line beneath it. */ | |
734 | int phys_ascent, phys_height; | |
735 | ||
5f5c8ee5 GM |
736 | /* Portion of row that is visible. Partially visible rows may be |
737 | found at the top and bottom of a window. This is 1 for tty | |
738 | frames. It may be < 0 in case of completely invisible rows. */ | |
739 | int visible_height; | |
740 | ||
db0c5a7d KS |
741 | /* Extra line spacing added after this row. Do not consider this |
742 | in last row when checking if row is fully visible. */ | |
743 | int extra_line_spacing; | |
744 | ||
5f5c8ee5 GM |
745 | /* Hash code. This hash code is available as soon as the row |
746 | is constructed, i.e. after a call to display_line. */ | |
747 | unsigned hash; | |
748 | ||
749 | /* First position in this row. This is the text position, including | |
750 | overlay position information etc, where the display of this row | |
751 | started, and can thus be less the position of the first glyph | |
9c82e145 | 752 | (e.g. due to invisible text or horizontal scrolling). BIDI Note: |
e69a9370 EZ |
753 | This is the smallest character position in the row, but not |
754 | necessarily the character that is the leftmost on the display. */ | |
5f5c8ee5 GM |
755 | struct display_pos start; |
756 | ||
757 | /* Text position at the end of this row. This is the position after | |
758 | the last glyph on this row. It can be greater than the last | |
759 | glyph position + 1, due to truncation, invisible text etc. In an | |
760 | up-to-date display, this should always be equal to the start | |
9c82e145 | 761 | position of the next row. BIDI Note: this is the character whose |
e69a9370 EZ |
762 | buffer position is the largest, but not necessarily the rightmost |
763 | one on the display. */ | |
5f5c8ee5 GM |
764 | struct display_pos end; |
765 | ||
e937c046 KS |
766 | /* Non-zero means the overlay arrow bitmap is on this line. |
767 | -1 means use default overlay arrow bitmap, else | |
768 | it specifies actual fringe bitmap number. */ | |
769 | int overlay_arrow_bitmap; | |
770 | ||
6b61353c KH |
771 | /* Left fringe bitmap number (enum fringe_bitmap_type). */ |
772 | unsigned left_user_fringe_bitmap : FRINGE_ID_BITS; | |
773 | ||
6b61353c KH |
774 | /* Right fringe bitmap number (enum fringe_bitmap_type). */ |
775 | unsigned right_user_fringe_bitmap : FRINGE_ID_BITS; | |
776 | ||
6b61353c KH |
777 | /* Left fringe bitmap number (enum fringe_bitmap_type). */ |
778 | unsigned left_fringe_bitmap : FRINGE_ID_BITS; | |
779 | ||
6b61353c KH |
780 | /* Right fringe bitmap number (enum fringe_bitmap_type). */ |
781 | unsigned right_fringe_bitmap : FRINGE_ID_BITS; | |
782 | ||
b3b08f03 KS |
783 | /* Face of the left fringe glyph. */ |
784 | unsigned left_user_fringe_face_id : FACE_ID_BITS; | |
785 | ||
786 | /* Face of the right fringe glyph. */ | |
787 | unsigned right_user_fringe_face_id : FACE_ID_BITS; | |
788 | ||
789 | /* Face of the left fringe glyph. */ | |
790 | unsigned left_fringe_face_id : FACE_ID_BITS; | |
791 | ||
6b61353c KH |
792 | /* Face of the right fringe glyph. */ |
793 | unsigned right_fringe_face_id : FACE_ID_BITS; | |
794 | ||
795 | /* 1 means that we must draw the bitmaps of this row. */ | |
796 | unsigned redraw_fringe_bitmaps_p : 1; | |
797 | ||
5f5c8ee5 GM |
798 | /* In a desired matrix, 1 means that this row must be updated. In a |
799 | current matrix, 0 means that the row has been invalidated, i.e. | |
800 | the row's contents do not agree with what is visible on the | |
801 | screen. */ | |
802 | unsigned enabled_p : 1; | |
803 | ||
5f5c8ee5 GM |
804 | /* 1 means row displays a text line that is truncated on the left or |
805 | right side. */ | |
806 | unsigned truncated_on_left_p : 1; | |
807 | unsigned truncated_on_right_p : 1; | |
808 | ||
5f5c8ee5 GM |
809 | /* 1 means that this row displays a continued line, i.e. it has a |
810 | continuation mark at the right side. */ | |
811 | unsigned continued_p : 1; | |
812 | ||
813 | /* 0 means that this row does not contain any text, i.e. it is | |
814 | a blank line at the window and buffer end. */ | |
815 | unsigned displays_text_p : 1; | |
816 | ||
817 | /* 1 means that this line ends at ZV. */ | |
818 | unsigned ends_at_zv_p : 1; | |
819 | ||
820 | /* 1 means the face of the last glyph in the text area is drawn to | |
821 | the right end of the window. This flag is used in | |
822 | update_text_area to optimize clearing to the end of the area. */ | |
823 | unsigned fill_line_p : 1; | |
824 | ||
825 | /* Non-zero means display a bitmap on X frames indicating that this | |
826 | line contains no text and ends in ZV. */ | |
827 | unsigned indicate_empty_line_p : 1; | |
828 | ||
829 | /* 1 means this row contains glyphs that overlap each other because | |
830 | of lbearing or rbearing. */ | |
831 | unsigned contains_overlapping_glyphs_p : 1; | |
832 | ||
54bff0bd | 833 | /* 1 means this row is as wide as the window it is displayed in, including |
afb7aabb | 834 | scroll bars, fringes, and internal borders. This also |
5f5c8ee5 GM |
835 | implies that the row doesn't have marginal areas. */ |
836 | unsigned full_width_p : 1; | |
837 | ||
54bff0bd | 838 | /* Non-zero means row is a mode or header-line. */ |
5f5c8ee5 GM |
839 | unsigned mode_line_p : 1; |
840 | ||
2febf6e0 GM |
841 | /* 1 in a current row means this row is overlapped by another row. */ |
842 | unsigned overlapped_p : 1; | |
843 | ||
666852af GM |
844 | /* 1 means this line ends in the middle of a character consisting |
845 | of more than one glyph. Some glyphs have been put in this row, | |
846 | the rest are put in rows below this one. */ | |
847 | unsigned ends_in_middle_of_char_p : 1; | |
177c0ea7 | 848 | |
666852af GM |
849 | /* 1 means this line starts in the middle of a character consisting |
850 | of more than one glyph. Some glyphs have been put in the | |
54bff0bd | 851 | previous row, the rest are put in this row. */ |
666852af GM |
852 | unsigned starts_in_middle_of_char_p : 1; |
853 | ||
2febf6e0 GM |
854 | /* 1 in a current row means this row overlaps others. */ |
855 | unsigned overlapping_p : 1; | |
856 | ||
48b509fe GM |
857 | /* 1 means some glyphs in this row are displayed in mouse-face. */ |
858 | unsigned mouse_face_p : 1; | |
859 | ||
257e3f57 GM |
860 | /* 1 means this row was ended by a newline from a string. */ |
861 | unsigned ends_in_newline_from_string_p : 1; | |
862 | ||
6b61353c KH |
863 | /* 1 means this row width is exactly the width of the window, and the |
864 | final newline character is hidden in the right fringe. */ | |
865 | unsigned exact_window_width_line_p : 1; | |
866 | ||
867 | /* 1 means this row currently shows the cursor in the right fringe. */ | |
868 | unsigned cursor_in_fringe_p : 1; | |
869 | ||
b437860a RS |
870 | /* 1 means the last glyph in the row is part of an ellipsis. */ |
871 | unsigned ends_in_ellipsis_p : 1; | |
872 | ||
6b61353c KH |
873 | /* Non-zero means display a bitmap on X frames indicating that this |
874 | the first line of the buffer. */ | |
875 | unsigned indicate_bob_p : 1; | |
876 | ||
877 | /* Non-zero means display a bitmap on X frames indicating that this | |
878 | the top line of the window, but not start of the buffer. */ | |
879 | unsigned indicate_top_line_p : 1; | |
880 | ||
881 | /* Non-zero means display a bitmap on X frames indicating that this | |
882 | the last line of the buffer. */ | |
883 | unsigned indicate_eob_p : 1; | |
884 | ||
885 | /* Non-zero means display a bitmap on X frames indicating that this | |
886 | the bottom line of the window, but not end of the buffer. */ | |
887 | unsigned indicate_bottom_line_p : 1; | |
888 | ||
c143c213 EZ |
889 | /* Non-zero means the row was reversed to display text in a |
890 | right-to-left paragraph. */ | |
891 | unsigned reversed_p : 1; | |
892 | ||
5f5c8ee5 GM |
893 | /* Continuation lines width at the start of the row. */ |
894 | int continuation_lines_width; | |
7cd30fff | 895 | |
3e88ae62 | 896 | #ifdef HAVE_WINDOW_SYSTEM |
7cd30fff KH |
897 | /* Non-NULL means the current clipping area. This is temporarily |
898 | set while exposing a region. Coordinates are frame-relative. */ | |
899 | XRectangle *clip; | |
3e88ae62 | 900 | #endif |
5f5c8ee5 GM |
901 | }; |
902 | ||
903 | ||
904 | /* Get a pointer to row number ROW in matrix MATRIX. If GLYPH_DEBUG | |
905 | is defined to a non-zero value, the function matrix_row checks that | |
906 | we don't try to access rows that are out of bounds. */ | |
907 | ||
908 | #if GLYPH_DEBUG | |
909 | struct glyph_row *matrix_row P_ ((struct glyph_matrix *, int)); | |
910 | #define MATRIX_ROW(MATRIX, ROW) matrix_row ((MATRIX), (ROW)) | |
911 | #else | |
912 | #define MATRIX_ROW(MATRIX, ROW) ((MATRIX)->rows + (ROW)) | |
913 | #endif | |
914 | ||
177c0ea7 | 915 | /* Return a pointer to the row reserved for the mode line in MATRIX. |
5f5c8ee5 GM |
916 | Row MATRIX->nrows - 1 is always reserved for the mode line. */ |
917 | ||
918 | #define MATRIX_MODE_LINE_ROW(MATRIX) \ | |
919 | ((MATRIX)->rows + (MATRIX)->nrows - 1) | |
920 | ||
54bff0bd | 921 | /* Return a pointer to the row reserved for the header line in MATRIX. |
5f5c8ee5 GM |
922 | This is always the first row in MATRIX because that's the only |
923 | way that works in frame-based redisplay. */ | |
924 | ||
045dee35 | 925 | #define MATRIX_HEADER_LINE_ROW(MATRIX) (MATRIX)->rows |
5f5c8ee5 GM |
926 | |
927 | /* Return a pointer to first row in MATRIX used for text display. */ | |
928 | ||
929 | #define MATRIX_FIRST_TEXT_ROW(MATRIX) \ | |
930 | ((MATRIX)->rows->mode_line_p ? (MATRIX)->rows + 1 : (MATRIX)->rows) | |
931 | ||
932 | /* Return a pointer to the first glyph in the text area of a row. | |
933 | MATRIX is the glyph matrix accessed, and ROW is the row index in | |
934 | MATRIX. */ | |
935 | ||
936 | #define MATRIX_ROW_GLYPH_START(MATRIX, ROW) \ | |
937 | (MATRIX_ROW ((MATRIX), (ROW))->glyphs[TEXT_AREA]) | |
938 | ||
939 | /* Return the number of used glyphs in the text area of a row. */ | |
177c0ea7 | 940 | |
5f5c8ee5 GM |
941 | #define MATRIX_ROW_USED(MATRIX, ROW) \ |
942 | (MATRIX_ROW ((MATRIX), (ROW))->used[TEXT_AREA]) | |
943 | ||
944 | /* Return the character/ byte position at which the display of ROW | |
9c82e145 EZ |
945 | starts. BIDI Note: this is the smallest character/byte position |
946 | among characters in ROW, i.e. the first logical-order character | |
947 | displayed by ROW, which is not necessarily the smallest horizontal | |
948 | position. */ | |
177c0ea7 | 949 | |
5f5c8ee5 GM |
950 | #define MATRIX_ROW_START_CHARPOS(ROW) ((ROW)->start.pos.charpos) |
951 | #define MATRIX_ROW_START_BYTEPOS(ROW) ((ROW)->start.pos.bytepos) | |
952 | ||
9c82e145 EZ |
953 | /* Return the character/ byte position at which ROW ends. BIDI Note: |
954 | this is the largest character/byte position among characters in | |
955 | ROW, i.e. the last logical-order character displayed by ROW, which | |
956 | is not necessarily the largest horizontal position. */ | |
177c0ea7 | 957 | |
5f5c8ee5 GM |
958 | #define MATRIX_ROW_END_CHARPOS(ROW) ((ROW)->end.pos.charpos) |
959 | #define MATRIX_ROW_END_BYTEPOS(ROW) ((ROW)->end.pos.bytepos) | |
960 | ||
961 | /* Return the vertical position of ROW in MATRIX. */ | |
177c0ea7 | 962 | |
5f5c8ee5 GM |
963 | #define MATRIX_ROW_VPOS(ROW, MATRIX) ((ROW) - (MATRIX)->rows) |
964 | ||
965 | /* Return the last glyph row + 1 in MATRIX on window W reserved for | |
966 | text. If W has a mode line, the last row in the matrix is reserved | |
967 | for it. */ | |
177c0ea7 | 968 | |
5f5c8ee5 GM |
969 | #define MATRIX_BOTTOM_TEXT_ROW(MATRIX, W) \ |
970 | ((MATRIX)->rows \ | |
971 | + (MATRIX)->nrows \ | |
972 | - (WINDOW_WANTS_MODELINE_P ((W)) ? 1 : 0)) | |
973 | ||
974 | /* Non-zero if the face of the last glyph in ROW's text area has | |
975 | to be drawn to the end of the text area. */ | |
177c0ea7 | 976 | |
5f5c8ee5 GM |
977 | #define MATRIX_ROW_EXTENDS_FACE_P(ROW) ((ROW)->fill_line_p) |
978 | ||
979 | /* Set and query the enabled_p flag of glyph row ROW in MATRIX. */ | |
177c0ea7 | 980 | |
5f5c8ee5 GM |
981 | #define SET_MATRIX_ROW_ENABLED_P(MATRIX, ROW, VALUE) \ |
982 | (MATRIX_ROW ((MATRIX), (ROW))->enabled_p = (VALUE) != 0) | |
177c0ea7 | 983 | |
5f5c8ee5 GM |
984 | #define MATRIX_ROW_ENABLED_P(MATRIX, ROW) \ |
985 | (MATRIX_ROW ((MATRIX), (ROW))->enabled_p) | |
986 | ||
987 | /* Non-zero if ROW displays text. Value is non-zero if the row is | |
988 | blank but displays a line end. */ | |
177c0ea7 | 989 | |
5f5c8ee5 GM |
990 | #define MATRIX_ROW_DISPLAYS_TEXT_P(ROW) ((ROW)->displays_text_p) |
991 | ||
db0c5a7d KS |
992 | |
993 | /* Helper macros */ | |
994 | ||
995 | #define MR_PARTIALLY_VISIBLE(ROW) \ | |
996 | ((ROW)->height != (ROW)->visible_height) | |
997 | ||
998 | #define MR_PARTIALLY_VISIBLE_AT_TOP(W, ROW) \ | |
999 | ((ROW)->y < WINDOW_HEADER_LINE_HEIGHT ((W))) | |
1000 | ||
1001 | #define MR_PARTIALLY_VISIBLE_AT_BOTTOM(W, ROW) \ | |
1002 | (((ROW)->y + (ROW)->height - (ROW)->extra_line_spacing) \ | |
1003 | > WINDOW_BOX_HEIGHT_NO_MODE_LINE ((W))) | |
1004 | ||
5f5c8ee5 | 1005 | /* Non-zero if ROW is not completely visible in window W. */ |
177c0ea7 | 1006 | |
db0c5a7d KS |
1007 | #define MATRIX_ROW_PARTIALLY_VISIBLE_P(W, ROW) \ |
1008 | (MR_PARTIALLY_VISIBLE ((ROW)) \ | |
1009 | && (MR_PARTIALLY_VISIBLE_AT_TOP ((W), (ROW)) \ | |
1010 | || MR_PARTIALLY_VISIBLE_AT_BOTTOM ((W), (ROW)))) | |
1011 | ||
1012 | ||
5f5c8ee5 GM |
1013 | |
1014 | /* Non-zero if ROW is partially visible at the top of window W. */ | |
177c0ea7 | 1015 | |
5f5c8ee5 | 1016 | #define MATRIX_ROW_PARTIALLY_VISIBLE_AT_TOP_P(W, ROW) \ |
db0c5a7d KS |
1017 | (MR_PARTIALLY_VISIBLE ((ROW)) \ |
1018 | && MR_PARTIALLY_VISIBLE_AT_TOP ((W), (ROW))) | |
5f5c8ee5 GM |
1019 | |
1020 | /* Non-zero if ROW is partially visible at the bottom of window W. */ | |
177c0ea7 | 1021 | |
db0c5a7d KS |
1022 | #define MATRIX_ROW_PARTIALLY_VISIBLE_AT_BOTTOM_P(W, ROW) \ |
1023 | (MR_PARTIALLY_VISIBLE ((ROW)) \ | |
1024 | && MR_PARTIALLY_VISIBLE_AT_BOTTOM ((W), (ROW))) | |
5f5c8ee5 GM |
1025 | |
1026 | /* Return the bottom Y + 1 of ROW. */ | |
177c0ea7 | 1027 | |
5f5c8ee5 GM |
1028 | #define MATRIX_ROW_BOTTOM_Y(ROW) ((ROW)->y + (ROW)->height) |
1029 | ||
1030 | /* Is ROW the last visible one in the display described by the | |
1031 | iterator structure pointed to by IT?. */ | |
177c0ea7 | 1032 | |
5f5c8ee5 GM |
1033 | #define MATRIX_ROW_LAST_VISIBLE_P(ROW, IT) \ |
1034 | (MATRIX_ROW_BOTTOM_Y ((ROW)) >= (IT)->last_visible_y) | |
1035 | ||
1036 | /* Non-zero if ROW displays a continuation line. */ | |
1037 | ||
1038 | #define MATRIX_ROW_CONTINUATION_LINE_P(ROW) \ | |
1039 | ((ROW)->continuation_lines_width > 0) | |
1040 | ||
1041 | /* Non-zero if ROW ends in the middle of a character. This is the | |
1042 | case for continued lines showing only part of a display table entry | |
1043 | or a control char, or an overlay string. */ | |
1044 | ||
1045 | #define MATRIX_ROW_ENDS_IN_MIDDLE_OF_CHAR_P(ROW) \ | |
e6fb381c | 1046 | ((ROW)->end.dpvec_index > 0 \ |
666852af GM |
1047 | || (ROW)->end.overlay_string_index >= 0 \ |
1048 | || (ROW)->ends_in_middle_of_char_p) | |
5f5c8ee5 GM |
1049 | |
1050 | /* Non-zero if ROW ends in the middle of an overlay string. */ | |
1051 | ||
1052 | #define MATRIX_ROW_ENDS_IN_OVERLAY_STRING_P(ROW) \ | |
1053 | ((ROW)->end.overlay_string_index >= 0) | |
1054 | ||
1055 | /* Non-zero if ROW starts in the middle of a character. See above. */ | |
177c0ea7 | 1056 | |
5f5c8ee5 | 1057 | #define MATRIX_ROW_STARTS_IN_MIDDLE_OF_CHAR_P(ROW) \ |
e6fb381c | 1058 | ((ROW)->start.dpvec_index > 0 \ |
666852af | 1059 | || (ROW)->starts_in_middle_of_char_p \ |
5f5c8ee5 GM |
1060 | || ((ROW)->start.overlay_string_index >= 0 \ |
1061 | && (ROW)->start.string_pos.charpos > 0)) | |
1062 | ||
2febf6e0 GM |
1063 | /* Non-zero means ROW overlaps its predecessor. */ |
1064 | ||
1065 | #define MATRIX_ROW_OVERLAPS_PRED_P(ROW) \ | |
1066 | ((ROW)->phys_ascent > (ROW)->ascent) | |
1067 | ||
1068 | /* Non-zero means ROW overlaps its successor. */ | |
1069 | ||
1070 | #define MATRIX_ROW_OVERLAPS_SUCC_P(ROW) \ | |
1071 | ((ROW)->phys_height - (ROW)->phys_ascent \ | |
1072 | > (ROW)->height - (ROW)->ascent) | |
1073 | ||
5f5c8ee5 GM |
1074 | /* Non-zero means that fonts have been loaded since the last glyph |
1075 | matrix adjustments. The function redisplay_internal adjusts glyph | |
1076 | matrices when this flag is non-zero. */ | |
1077 | ||
1078 | extern int fonts_changed_p; | |
1079 | ||
1080 | /* A glyph for a space. */ | |
1081 | ||
1082 | extern struct glyph space_glyph; | |
1083 | ||
1084 | /* Window being updated by update_window. This is non-null as long as | |
856dd475 | 1085 | update_window has not finished, and null otherwise. */ |
5f5c8ee5 GM |
1086 | |
1087 | extern struct window *updated_window; | |
1088 | ||
1089 | /* Glyph row and area updated by update_window_line. */ | |
1090 | ||
1091 | extern struct glyph_row *updated_row; | |
1092 | extern int updated_area; | |
1093 | ||
1094 | /* Non-zero means reading single-character input with prompt so put | |
1095 | cursor on mini-buffer after the prompt. Positive means at end of | |
1096 | text in echo area; negative means at beginning of line. */ | |
1097 | ||
1098 | extern int cursor_in_echo_area; | |
1099 | ||
1100 | /* Non-zero means last display completed. Zero means it was | |
1101 | preempted. */ | |
1102 | ||
1103 | extern int display_completed; | |
1104 | ||
1105 | /* Non-zero means redisplay has been performed directly (see also | |
1106 | direct_output_for_insert and direct_output_forward_char), so that | |
1107 | no further updating has to be performed. The function | |
1108 | redisplay_internal checks this flag, and does nothing but reset it | |
1109 | to zero if it is non-zero. */ | |
1110 | ||
1111 | extern int redisplay_performed_directly_p; | |
1112 | ||
1113 | /* A temporary storage area, including a row of glyphs. Initialized | |
1114 | in xdisp.c. Used for various purposes, as an example see | |
1115 | direct_output_for_insert. */ | |
1116 | ||
1117 | extern struct glyph_row scratch_glyph_row; | |
1118 | ||
1119 | ||
1120 | \f | |
d5cc60b8 KS |
1121 | /************************************************************************ |
1122 | Glyph Strings | |
1123 | ************************************************************************/ | |
1124 | ||
1125 | /* Enumeration for overriding/changing the face to use for drawing | |
d74b2553 | 1126 | glyphs in draw_glyphs. */ |
d5cc60b8 KS |
1127 | |
1128 | enum draw_glyphs_face | |
1129 | { | |
1130 | DRAW_NORMAL_TEXT, | |
1131 | DRAW_INVERSE_VIDEO, | |
1132 | DRAW_CURSOR, | |
1133 | DRAW_MOUSE_FACE, | |
1134 | DRAW_IMAGE_RAISED, | |
1135 | DRAW_IMAGE_SUNKEN | |
1136 | }; | |
1137 | ||
79fa9e0f KS |
1138 | #ifdef HAVE_WINDOW_SYSTEM |
1139 | ||
d5cc60b8 KS |
1140 | /* A sequence of glyphs to be drawn in the same face. */ |
1141 | ||
1142 | struct glyph_string | |
1143 | { | |
1144 | /* X-origin of the string. */ | |
1145 | int x; | |
1146 | ||
1147 | /* Y-origin and y-position of the base line of this string. */ | |
1148 | int y, ybase; | |
1149 | ||
1150 | /* The width of the string, not including a face extension. */ | |
1151 | int width; | |
1152 | ||
1153 | /* The width of the string, including a face extension. */ | |
1154 | int background_width; | |
1155 | ||
1156 | /* The height of this string. This is the height of the line this | |
1157 | string is drawn in, and can be different from the height of the | |
1158 | font the string is drawn in. */ | |
1159 | int height; | |
1160 | ||
1161 | /* Number of pixels this string overwrites in front of its x-origin. | |
1162 | This number is zero if the string has an lbearing >= 0; it is | |
1163 | -lbearing, if the string has an lbearing < 0. */ | |
1164 | int left_overhang; | |
1165 | ||
1166 | /* Number of pixels this string overwrites past its right-most | |
1167 | nominal x-position, i.e. x + width. Zero if the string's | |
1168 | rbearing is <= its nominal width, rbearing - width otherwise. */ | |
1169 | int right_overhang; | |
1170 | ||
1171 | /* The frame on which the glyph string is drawn. */ | |
1172 | struct frame *f; | |
1173 | ||
1174 | /* The window on which the glyph string is drawn. */ | |
1175 | struct window *w; | |
1176 | ||
1177 | /* X display and window for convenience. */ | |
1178 | Display *display; | |
1179 | Window window; | |
1180 | ||
1181 | /* The glyph row for which this string was built. It determines the | |
1182 | y-origin and height of the string. */ | |
1183 | struct glyph_row *row; | |
1184 | ||
1185 | /* The area within row. */ | |
1186 | enum glyph_row_area area; | |
1187 | ||
1188 | /* Characters to be drawn, and number of characters. */ | |
1189 | XChar2b *char2b; | |
1190 | int nchars; | |
1191 | ||
1192 | /* A face-override for drawing cursors, mouse face and similar. */ | |
1193 | enum draw_glyphs_face hl; | |
1194 | ||
1195 | /* Face in which this string is to be drawn. */ | |
1196 | struct face *face; | |
1197 | ||
1198 | /* Font in which this string is to be drawn. */ | |
93cf902a | 1199 | struct font *font; |
d5cc60b8 | 1200 | |
a88c7fcd KH |
1201 | /* Non-null means this string describes (part of) a static |
1202 | composition. */ | |
d5cc60b8 KS |
1203 | struct composition *cmp; |
1204 | ||
a88c7fcd KH |
1205 | /* If not negative, this string describes a compos. */ |
1206 | int cmp_id; | |
1207 | ||
1208 | /* Start and end glyph indices in a glyph-string. */ | |
1209 | int cmp_from, cmp_to; | |
d5cc60b8 KS |
1210 | |
1211 | /* 1 means this glyph strings face has to be drawn to the right end | |
1212 | of the window's drawing area. */ | |
1213 | unsigned extends_to_end_of_line_p : 1; | |
1214 | ||
1215 | /* 1 means the background of this string has been drawn. */ | |
1216 | unsigned background_filled_p : 1; | |
1217 | ||
1218 | /* 1 means glyph string must be drawn with 16-bit functions. */ | |
1219 | unsigned two_byte_p : 1; | |
1220 | ||
1221 | /* 1 means that the original font determined for drawing this glyph | |
1222 | string could not be loaded. The member `font' has been set to | |
1223 | the frame's default font in this case. */ | |
1224 | unsigned font_not_found_p : 1; | |
1225 | ||
1226 | /* 1 means that the face in which this glyph string is drawn has a | |
1227 | stipple pattern. */ | |
1228 | unsigned stippled_p : 1; | |
1229 | ||
10a07952 YM |
1230 | #define OVERLAPS_PRED (1 << 0) |
1231 | #define OVERLAPS_SUCC (1 << 1) | |
1232 | #define OVERLAPS_BOTH (OVERLAPS_PRED | OVERLAPS_SUCC) | |
1233 | #define OVERLAPS_ERASED_CURSOR (1 << 2) | |
1234 | /* Non-zero means only the foreground of this glyph string must be | |
1235 | drawn, and we should use the physical height of the line this | |
1236 | glyph string appears in as clip rect. If the value is | |
1237 | OVERLAPS_ERASED_CURSOR, the clip rect is restricted to the rect | |
1238 | of the erased cursor. OVERLAPS_PRED and OVERLAPS_SUCC mean we | |
1239 | draw overlaps with the preceding and the succeeding rows, | |
1240 | respectively. */ | |
1241 | unsigned for_overlaps : 3; | |
d5cc60b8 | 1242 | |
ae185452 KH |
1243 | /* 1 means that all glyphs in this glyph string has the flag |
1244 | padding_p set, and thus must be drawn one by one to have 1-pixel | |
1245 | width even though the logical width in the font is zero. */ | |
1246 | unsigned padding_p : 1; | |
1247 | ||
d5cc60b8 | 1248 | /* The GC to use for drawing this glyph string. */ |
9e2a2647 | 1249 | #if defined(HAVE_X_WINDOWS) |
d5cc60b8 KS |
1250 | GC gc; |
1251 | #endif | |
1252 | #if defined(HAVE_NTGUI) | |
1253 | XGCValues *gc; | |
1254 | HDC hdc; | |
1255 | #endif | |
1256 | ||
1257 | /* A pointer to the first glyph in the string. This glyph | |
1258 | corresponds to char2b[0]. Needed to draw rectangles if | |
1259 | font_not_found_p is 1. */ | |
1260 | struct glyph *first_glyph; | |
1261 | ||
1262 | /* Image, if any. */ | |
1263 | struct image *img; | |
1264 | ||
0633d52c KS |
1265 | /* Slice */ |
1266 | struct glyph_slice slice; | |
1267 | ||
8c2da0fa ST |
1268 | /* Non-null means the horizontal clipping region starts from the |
1269 | left edge of *clip_head, and ends with the right edge of | |
1270 | *clip_tail, not including their overhangs. */ | |
1271 | struct glyph_string *clip_head, *clip_tail; | |
1272 | ||
7cd30fff KH |
1273 | /* The current clipping areas. */ |
1274 | NativeRectangle clip[2]; | |
1275 | ||
1276 | /* Number of clipping areas. */ | |
1277 | int num_clips; | |
8443e69e | 1278 | |
93cf902a KH |
1279 | int underline_position; |
1280 | ||
1281 | int underline_thickness; | |
1282 | ||
d5cc60b8 KS |
1283 | struct glyph_string *next, *prev; |
1284 | }; | |
1285 | ||
79fa9e0f | 1286 | #endif /* HAVE_WINDOW_SYSTEM */ |
d5cc60b8 KS |
1287 | |
1288 | \f | |
5f5c8ee5 GM |
1289 | /************************************************************************ |
1290 | Display Dimensions | |
1291 | ************************************************************************/ | |
1292 | ||
1293 | /* Return the height of the mode line in glyph matrix MATRIX, or zero | |
1294 | if not known. This macro is called under circumstances where | |
1295 | MATRIX might not have been allocated yet. */ | |
1296 | ||
1297 | #define MATRIX_MODE_LINE_HEIGHT(MATRIX) \ | |
1298 | ((MATRIX) && (MATRIX)->rows \ | |
1299 | ? MATRIX_MODE_LINE_ROW (MATRIX)->height \ | |
1300 | : 0) | |
1301 | ||
54bff0bd | 1302 | /* Return the height of the header line in glyph matrix MATRIX, or zero |
5f5c8ee5 GM |
1303 | if not known. This macro is called under circumstances where |
1304 | MATRIX might not have been allocated yet. */ | |
1305 | ||
045dee35 | 1306 | #define MATRIX_HEADER_LINE_HEIGHT(MATRIX) \ |
5f5c8ee5 | 1307 | ((MATRIX) && (MATRIX)->rows \ |
045dee35 | 1308 | ? MATRIX_HEADER_LINE_ROW (MATRIX)->height \ |
5f5c8ee5 GM |
1309 | : 0) |
1310 | ||
a4610492 KS |
1311 | /* Return the desired face id for the mode line of a window, depending |
1312 | on whether the window is selected or not, or if the window is the | |
1313 | scrolling window for the currently active minibuffer window. | |
1314 | ||
1315 | Due to the way display_mode_lines manipulates with the contents of | |
1316 | selected_window, this macro needs three arguments: SELW which is | |
1317 | compared against the current value of selected_window, MBW which is | |
1318 | compared against minibuf_window (if SELW doesn't match), and SCRW | |
5705966b | 1319 | which is compared against minibuf_selected_window (if MBW matches). */ |
a4610492 KS |
1320 | |
1321 | #define CURRENT_MODE_LINE_FACE_ID_3(SELW, MBW, SCRW) \ | |
5f380a5b | 1322 | ((!mode_line_in_non_selected_windows \ |
a4610492 | 1323 | || (SELW) == XWINDOW (selected_window) \ |
5f380a5b | 1324 | || (minibuf_level > 0 \ |
5705966b | 1325 | && !NILP (minibuf_selected_window) \ |
5f380a5b | 1326 | && (MBW) == XWINDOW (minibuf_window) \ |
5705966b | 1327 | && (SCRW) == XWINDOW (minibuf_selected_window))) \ |
a4610492 KS |
1328 | ? MODE_LINE_FACE_ID \ |
1329 | : MODE_LINE_INACTIVE_FACE_ID) | |
1330 | ||
1331 | ||
1332 | /* Return the desired face id for the mode line of window W. */ | |
f6911ea7 KS |
1333 | |
1334 | #define CURRENT_MODE_LINE_FACE_ID(W) \ | |
a4610492 | 1335 | (CURRENT_MODE_LINE_FACE_ID_3((W), XWINDOW (selected_window), (W))) |
f6911ea7 | 1336 | |
5f5c8ee5 | 1337 | /* Return the current height of the mode line of window W. If not |
e9e32f46 GM |
1338 | known from current_mode_line_height, look at W's current glyph |
1339 | matrix, or return a default based on the height of the font of the | |
1340 | face `mode-line'. */ | |
1341 | ||
1342 | #define CURRENT_MODE_LINE_HEIGHT(W) \ | |
1343 | (current_mode_line_height >= 0 \ | |
1344 | ? current_mode_line_height \ | |
1345 | : (MATRIX_MODE_LINE_HEIGHT ((W)->current_matrix) \ | |
1346 | ? MATRIX_MODE_LINE_HEIGHT ((W)->current_matrix) \ | |
1347 | : estimate_mode_line_height (XFRAME ((W)->frame), \ | |
f6911ea7 | 1348 | CURRENT_MODE_LINE_FACE_ID (W)))) |
5f5c8ee5 | 1349 | |
54bff0bd | 1350 | /* Return the current height of the header line of window W. If not |
e9e32f46 GM |
1351 | known from current_header_line_height, look at W's current glyph |
1352 | matrix, or return an estimation based on the height of the font of | |
1353 | the face `header-line'. */ | |
1354 | ||
1355 | #define CURRENT_HEADER_LINE_HEIGHT(W) \ | |
1356 | (current_header_line_height >= 0 \ | |
1357 | ? current_header_line_height \ | |
1358 | : (MATRIX_HEADER_LINE_HEIGHT ((W)->current_matrix) \ | |
1359 | ? MATRIX_HEADER_LINE_HEIGHT ((W)->current_matrix) \ | |
1360 | : estimate_mode_line_height (XFRAME ((W)->frame), \ | |
1361 | HEADER_LINE_FACE_ID))) | |
5f5c8ee5 GM |
1362 | |
1363 | /* Return the height of the desired mode line of window W. */ | |
1364 | ||
1365 | #define DESIRED_MODE_LINE_HEIGHT(W) \ | |
1366 | MATRIX_MODE_LINE_HEIGHT ((W)->desired_matrix) | |
1367 | ||
54bff0bd | 1368 | /* Return the height of the desired header line of window W. */ |
5f5c8ee5 | 1369 | |
045dee35 GM |
1370 | #define DESIRED_HEADER_LINE_HEIGHT(W) \ |
1371 | MATRIX_HEADER_LINE_HEIGHT ((W)->desired_matrix) | |
5f5c8ee5 | 1372 | |
54bff0bd | 1373 | /* Value is non-zero if window W wants a mode line. */ |
5f5c8ee5 GM |
1374 | |
1375 | #define WINDOW_WANTS_MODELINE_P(W) \ | |
2e8834ed | 1376 | (!MINI_WINDOW_P ((W)) \ |
5f5c8ee5 | 1377 | && !(W)->pseudo_window_p \ |
2e8834ed | 1378 | && FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME ((W)))) \ |
8801a864 | 1379 | && BUFFERP ((W)->buffer) \ |
2e8834ed | 1380 | && !NILP (XBUFFER ((W)->buffer)->mode_line_format) \ |
87388f9d | 1381 | && WINDOW_TOTAL_LINES (W) > 1) |
5f5c8ee5 | 1382 | |
54bff0bd | 1383 | /* Value is non-zero if window W wants a header line. */ |
5f5c8ee5 | 1384 | |
045dee35 | 1385 | #define WINDOW_WANTS_HEADER_LINE_P(W) \ |
2e8834ed | 1386 | (!MINI_WINDOW_P ((W)) \ |
5f5c8ee5 | 1387 | && !(W)->pseudo_window_p \ |
2e8834ed | 1388 | && FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME ((W)))) \ |
8801a864 | 1389 | && BUFFERP ((W)->buffer) \ |
2e8834ed | 1390 | && !NILP (XBUFFER ((W)->buffer)->header_line_format) \ |
87388f9d | 1391 | && WINDOW_TOTAL_LINES (W) > 1 + !NILP (XBUFFER ((W)->buffer)->mode_line_format)) |
5f5c8ee5 | 1392 | |
d74b2553 KS |
1393 | |
1394 | /* Return proper value to be used as baseline offset of font that has | |
1395 | ASCENT and DESCENT to draw characters by the font at the vertical | |
1396 | center of the line of frame F. | |
1397 | ||
1398 | Here, our task is to find the value of BOFF in the following figure; | |
1399 | ||
1400 | -------------------------+-----------+- | |
1401 | -+-+---------+-+ | | | |
1402 | | | | | | | | |
1403 | | | | | F_ASCENT F_HEIGHT | |
1404 | | | | ASCENT | | | |
1405 | HEIGHT | | | | | | |
1406 | | | |-|-+------+-----------|------- baseline | |
1407 | | | | | BOFF | | | |
1408 | | |---------|-+-+ | | | |
1409 | | | | DESCENT | | | |
1410 | -+-+---------+-+ F_DESCENT | | |
1411 | -------------------------+-----------+- | |
1412 | ||
1413 | -BOFF + DESCENT + (F_HEIGHT - HEIGHT) / 2 = F_DESCENT | |
1414 | BOFF = DESCENT + (F_HEIGHT - HEIGHT) / 2 - F_DESCENT | |
1415 | DESCENT = FONT->descent | |
1416 | HEIGHT = FONT_HEIGHT (FONT) | |
87388f9d | 1417 | F_DESCENT = (FRAME_FONT (F)->descent |
6ed8eeff | 1418 | - F->terminal->output_data.x->baseline_offset) |
d74b2553 KS |
1419 | F_HEIGHT = FRAME_LINE_HEIGHT (F) |
1420 | */ | |
1421 | ||
1422 | #define VCENTER_BASELINE_OFFSET(FONT, F) \ | |
1423 | (FONT_DESCENT (FONT) \ | |
1424 | + (FRAME_LINE_HEIGHT ((F)) - FONT_HEIGHT ((FONT)) \ | |
1425 | + (FRAME_LINE_HEIGHT ((F)) > FONT_HEIGHT ((FONT)))) / 2 \ | |
1426 | - (FONT_DESCENT (FRAME_FONT (F)) - FRAME_BASELINE_OFFSET (F))) | |
1427 | ||
177c0ea7 | 1428 | \f |
5f5c8ee5 GM |
1429 | /*********************************************************************** |
1430 | Faces | |
1431 | ***********************************************************************/ | |
177c0ea7 | 1432 | |
5f5c8ee5 GM |
1433 | /* Indices of face attributes in Lisp face vectors. Slot zero is the |
1434 | symbol `face'. */ | |
1435 | ||
1436 | enum lface_attribute_index | |
1437 | { | |
1438 | LFACE_FAMILY_INDEX = 1, | |
ff63b086 | 1439 | LFACE_FOUNDRY_INDEX, |
5f5c8ee5 GM |
1440 | LFACE_SWIDTH_INDEX, |
1441 | LFACE_HEIGHT_INDEX, | |
1442 | LFACE_WEIGHT_INDEX, | |
1443 | LFACE_SLANT_INDEX, | |
1444 | LFACE_UNDERLINE_INDEX, | |
1445 | LFACE_INVERSE_INDEX, | |
1446 | LFACE_FOREGROUND_INDEX, | |
1447 | LFACE_BACKGROUND_INDEX, | |
1448 | LFACE_STIPPLE_INDEX, | |
1449 | LFACE_OVERLINE_INDEX, | |
1450 | LFACE_STRIKE_THROUGH_INDEX, | |
1451 | LFACE_BOX_INDEX, | |
b3091a23 | 1452 | LFACE_FONT_INDEX, |
cd68bbe8 | 1453 | LFACE_INHERIT_INDEX, |
0ba42da6 | 1454 | LFACE_FONTSET_INDEX, |
5f5c8ee5 GM |
1455 | LFACE_VECTOR_SIZE |
1456 | }; | |
1457 | ||
1458 | ||
1459 | /* Box types of faces. */ | |
1460 | ||
1461 | enum face_box_type | |
1462 | { | |
1463 | /* No box around text. */ | |
1464 | FACE_NO_BOX, | |
1465 | ||
1466 | /* Simple box of specified width and color. Default width is 1, and | |
1467 | default color is the foreground color of the face. */ | |
1468 | FACE_SIMPLE_BOX, | |
1469 | ||
1470 | /* Boxes with 3D shadows. Color equals the background color of the | |
1471 | face. Width is specified. */ | |
1472 | FACE_RAISED_BOX, | |
1473 | FACE_SUNKEN_BOX | |
1474 | }; | |
1475 | ||
1476 | ||
1477 | /* Structure describing a realized face. | |
1478 | ||
1479 | For each Lisp face, 0..N realized faces can exist for different | |
1480 | frames and different charsets. Realized faces are built from Lisp | |
1481 | faces and text properties/overlays by merging faces and adding | |
1482 | unspecified attributes from the `default' face. */ | |
1483 | ||
9f2279ad | 1484 | struct face |
5f5c8ee5 GM |
1485 | { |
1486 | /* The id of this face. The id equals the index of this face in the | |
1487 | vector faces_by_id of its face cache. */ | |
1488 | int id; | |
1489 | ||
1490 | #ifdef HAVE_WINDOW_SYSTEM | |
177c0ea7 | 1491 | |
8016e514 EZ |
1492 | /* If non-zero, this is a GC that we can use without modification for |
1493 | drawing the characters in this face. */ | |
5f5c8ee5 | 1494 | GC gc; |
177c0ea7 | 1495 | |
831fefca GM |
1496 | /* Background stipple or bitmap used for this face. This is |
1497 | an id as returned from load_pixmap. */ | |
1498 | int stipple; | |
5f5c8ee5 GM |
1499 | |
1500 | #else /* not HAVE_WINDOW_SYSTEM */ | |
1501 | ||
1502 | /* Dummy. */ | |
1503 | int stipple; | |
1504 | ||
1505 | #endif /* not HAVE_WINDOW_SYSTEM */ | |
1506 | ||
1507 | /* Pixel value of foreground color for X frames. Color index | |
1508 | for tty frames. */ | |
1509 | unsigned long foreground; | |
177c0ea7 | 1510 | |
5f5c8ee5 GM |
1511 | /* Pixel value or color index of background color. */ |
1512 | unsigned long background; | |
1513 | ||
1514 | /* Pixel value or color index of underline color. */ | |
1515 | unsigned long underline_color; | |
1516 | ||
1517 | /* Pixel value or color index of overlined, strike-through, or box | |
1518 | color. */ | |
1519 | unsigned long overline_color; | |
1520 | unsigned long strike_through_color; | |
1521 | unsigned long box_color; | |
1522 | ||
93cf902a | 1523 | struct font *font; |
8443e69e | 1524 | |
da78062b KH |
1525 | /* Fontset ID if for this face's fontset. Non-ASCII faces derived |
1526 | from the same ASCII face have the same fontset. */ | |
5f5c8ee5 | 1527 | int fontset; |
177c0ea7 | 1528 | |
5f5c8ee5 GM |
1529 | /* Pixmap width and height. */ |
1530 | unsigned int pixmap_w, pixmap_h; | |
177c0ea7 | 1531 | |
5f5c8ee5 | 1532 | /* Non-zero means characters in this face have a box that thickness |
08f9976f KH |
1533 | around them. If it is negative, the absolute value indicates the |
1534 | thickness, and the horizontal lines of box (top and bottom) are | |
54bff0bd | 1535 | drawn inside of characters glyph area. The vertical lines of box |
08f9976f KH |
1536 | (left and right) are drawn as the same way as the case that this |
1537 | value is positive. */ | |
5f5c8ee5 GM |
1538 | int box_line_width; |
1539 | ||
1540 | /* Type of box drawn. A value of FACE_NO_BOX means no box is drawn | |
1541 | around text in this face. A value of FACE_SIMPLE_BOX means a box | |
1542 | of width box_line_width is drawn in color box_color. A value of | |
1543 | FACE_RAISED_BOX or FACE_SUNKEN_BOX means a 3D box is drawn with | |
1544 | shadow colors derived from the background color of the face. */ | |
1545 | enum face_box_type box; | |
1546 | ||
1547 | /* If `box' above specifies a 3D type, 1 means use box_color for | |
1548 | drawing shadows. */ | |
1549 | unsigned use_box_color_for_shadows_p : 1; | |
1550 | ||
5f5c8ee5 GM |
1551 | /* Non-zero if text in this face should be underlined, overlined, |
1552 | strike-through or have a box drawn around it. */ | |
1553 | unsigned underline_p : 1; | |
1554 | unsigned overline_p : 1; | |
1555 | unsigned strike_through_p : 1; | |
1556 | ||
1557 | /* 1 means that the colors specified for this face could not be | |
1558 | loaded, and were replaced by default colors, so they shouldn't be | |
1559 | freed. */ | |
1560 | unsigned foreground_defaulted_p : 1; | |
1561 | unsigned background_defaulted_p : 1; | |
1562 | ||
1563 | /* 1 means that either no color is specified for underlining or that | |
28b927d8 | 1564 | the specified color couldn't be loaded. Use the foreground |
5f5c8ee5 | 1565 | color when drawing in that case. */ |
177c0ea7 | 1566 | unsigned underline_defaulted_p : 1; |
5f5c8ee5 GM |
1567 | |
1568 | /* 1 means that either no color is specified for the corresponding | |
54bff0bd | 1569 | attribute or that the specified color couldn't be loaded. |
5f5c8ee5 GM |
1570 | Use the foreground color when drawing in that case. */ |
1571 | unsigned overline_color_defaulted_p : 1; | |
1572 | unsigned strike_through_color_defaulted_p : 1; | |
1573 | unsigned box_color_defaulted_p : 1; | |
1574 | ||
1575 | /* TTY appearances. Blinking is not yet implemented. Colors are | |
1576 | found in `lface' with empty color string meaning the default | |
1577 | color of the TTY. */ | |
1578 | unsigned tty_bold_p : 1; | |
1579 | unsigned tty_dim_p : 1; | |
1580 | unsigned tty_underline_p : 1; | |
1581 | unsigned tty_alt_charset_p : 1; | |
1582 | unsigned tty_reverse_p : 1; | |
1583 | unsigned tty_blinking_p : 1; | |
1584 | ||
dd387b25 GM |
1585 | /* 1 means that colors of this face may not be freed because they |
1586 | have been copied bitwise from a base face (see | |
1587 | realize_x_face). */ | |
1588 | unsigned colors_copied_bitwise_p : 1; | |
1589 | ||
11894ceb MB |
1590 | /* If non-zero, use overstrike (to simulate bold-face). */ |
1591 | unsigned overstrike : 1; | |
1592 | ||
edfda783 AR |
1593 | /* NOTE: this is not used yet, but eventually this impl should be done |
1594 | similarly to overstrike */ | |
1595 | #ifdef HAVE_NS | |
1596 | /* If non-zero, use geometric rotation (to simulate italic). */ | |
1597 | unsigned synth_ital : 1; | |
1598 | #endif | |
1599 | ||
31e0750e DN |
1600 | /* The Lisp face attributes this face realizes. All attributes |
1601 | in this vector are non-nil. */ | |
1602 | Lisp_Object lface[LFACE_VECTOR_SIZE]; | |
1603 | ||
1604 | /* The hash value of this face. */ | |
1605 | unsigned hash; | |
1606 | ||
5f5c8ee5 GM |
1607 | /* Next and previous face in hash collision list of face cache. */ |
1608 | struct face *next, *prev; | |
b3091a23 | 1609 | |
da78062b KH |
1610 | /* If this face is an ASCII face, this points to this face itself. |
1611 | Otherwise, this points to an ASCII face that has the same | |
1612 | attributes except the font. */ | |
b3091a23 | 1613 | struct face *ascii_face; |
8443e69e | 1614 | |
8443e69e KH |
1615 | /* Extra member that a font-driver uses privately. */ |
1616 | void *extra; | |
5f5c8ee5 GM |
1617 | }; |
1618 | ||
1619 | ||
1620 | /* Color index indicating that face uses a terminal's default color. */ | |
1621 | ||
1622 | #define FACE_TTY_DEFAULT_COLOR ((unsigned long) -1) | |
1623 | ||
f9d2fdc4 EZ |
1624 | /* Color index indicating that face uses an unknown foreground color. */ |
1625 | ||
1626 | #define FACE_TTY_DEFAULT_FG_COLOR ((unsigned long) -2) | |
1627 | ||
54bff0bd | 1628 | /* Color index indicating that face uses an unknown background color. */ |
f9d2fdc4 EZ |
1629 | |
1630 | #define FACE_TTY_DEFAULT_BG_COLOR ((unsigned long) -3) | |
1631 | ||
5f5c8ee5 GM |
1632 | /* Non-zero if FACE was realized for unibyte use. */ |
1633 | ||
1634 | #define FACE_UNIBYTE_P(FACE) ((FACE)->charset < 0) | |
1635 | ||
1636 | ||
1637 | /* IDs of important faces known by the C face code. These are the IDs | |
1638 | of the faces for CHARSET_ASCII. */ | |
1639 | ||
1640 | enum face_id | |
1641 | { | |
1642 | DEFAULT_FACE_ID, | |
1643 | MODE_LINE_FACE_ID, | |
f6911ea7 | 1644 | MODE_LINE_INACTIVE_FACE_ID, |
9ea173e8 | 1645 | TOOL_BAR_FACE_ID, |
afb7aabb | 1646 | FRINGE_FACE_ID, |
045dee35 | 1647 | HEADER_LINE_FACE_ID, |
76a6bc49 GM |
1648 | SCROLL_BAR_FACE_ID, |
1649 | BORDER_FACE_ID, | |
1650 | CURSOR_FACE_ID, | |
1651 | MOUSE_FACE_ID, | |
8317e104 | 1652 | MENU_FACE_ID, |
53abc3bf | 1653 | VERTICAL_BORDER_FACE_ID, |
5f5c8ee5 GM |
1654 | BASIC_FACE_ID_SENTINEL |
1655 | }; | |
1656 | ||
6b61353c | 1657 | #define MAX_FACE_ID ((1 << FACE_ID_BITS) - 1) |
5f5c8ee5 GM |
1658 | |
1659 | /* A cache of realized faces. Each frame has its own cache because | |
1660 | Emacs allows different frame-local face definitions. */ | |
1661 | ||
1662 | struct face_cache | |
1663 | { | |
1664 | /* Hash table of cached realized faces. */ | |
1665 | struct face **buckets; | |
177c0ea7 | 1666 | |
5f5c8ee5 GM |
1667 | /* Back-pointer to the frame this cache belongs to. */ |
1668 | struct frame *f; | |
1669 | ||
1670 | /* A vector of faces so that faces can be referenced by an ID. */ | |
1671 | struct face **faces_by_id; | |
1672 | ||
1673 | /* The allocated size, and number of used slots of faces_by_id. */ | |
1674 | int size, used; | |
90893c55 GM |
1675 | |
1676 | /* Flag indicating that attributes of the `menu' face have been | |
1677 | changed. */ | |
1678 | unsigned menu_face_changed_p : 1; | |
5f5c8ee5 GM |
1679 | }; |
1680 | ||
1681 | ||
1682 | /* Prepare face FACE for use on frame F. This must be called before | |
1683 | using X resources of FACE. */ | |
1684 | ||
1685 | #define PREPARE_FACE_FOR_DISPLAY(F, FACE) \ | |
1686 | if ((FACE)->gc == 0) \ | |
1687 | prepare_face_for_display ((F), (FACE)); \ | |
1688 | else \ | |
1689 | (void) 0 | |
1690 | ||
1691 | /* Return a pointer to the face with ID on frame F, or null if such a | |
1692 | face doesn't exist. */ | |
1693 | ||
1694 | #define FACE_FROM_ID(F, ID) \ | |
c388b3c2 | 1695 | (((unsigned) (ID) < FRAME_FACE_CACHE (F)->used) \ |
5f5c8ee5 GM |
1696 | ? FRAME_FACE_CACHE (F)->faces_by_id[ID] \ |
1697 | : NULL) | |
1698 | ||
ff1a0d8e KH |
1699 | #ifdef HAVE_WINDOW_SYSTEM |
1700 | ||
b3091a23 KH |
1701 | /* Non-zero if FACE is suitable for displaying character CHAR. */ |
1702 | ||
1703 | #define FACE_SUITABLE_FOR_CHAR_P(FACE, CHAR) \ | |
8f924df7 | 1704 | (ASCII_CHAR_P (CHAR) \ |
b3091a23 KH |
1705 | ? (FACE) == (FACE)->ascii_face \ |
1706 | : face_suitable_for_char_p ((FACE), (CHAR))) | |
1707 | ||
5f5c8ee5 | 1708 | /* Return the id of the realized face on frame F that is like the face |
b3091a23 KH |
1709 | with id ID but is suitable for displaying character CHAR. |
1710 | This macro is only meaningful for multibyte character CHAR. */ | |
177c0ea7 | 1711 | |
83a90904 KH |
1712 | #define FACE_FOR_CHAR(F, FACE, CHAR, POS, OBJECT) \ |
1713 | (ASCII_CHAR_P (CHAR) \ | |
1714 | ? (FACE)->ascii_face->id \ | |
1715 | : face_for_char ((F), (FACE), (CHAR), (POS), (OBJECT))) | |
5f5c8ee5 | 1716 | |
ff1a0d8e | 1717 | #else /* not HAVE_WINDOW_SYSTEM */ |
5f5c8ee5 | 1718 | |
ff1a0d8e | 1719 | #define FACE_SUITABLE_FOR_CHAR_P(FACE, CHAR) 1 |
83a90904 | 1720 | #define FACE_FOR_CHAR(F, FACE, CHAR, POS, OBJECT) ((FACE)->id) |
ff1a0d8e KH |
1721 | |
1722 | #endif /* not HAVE_WINDOW_SYSTEM */ | |
5f5c8ee5 GM |
1723 | |
1724 | /* Non-zero means face attributes have been changed since the last | |
1725 | redisplay. Used in redisplay_internal. */ | |
1726 | ||
1727 | extern int face_change_count; | |
1728 | ||
e69a9370 | 1729 | /* For reordering of bidirectional text. */ |
b7b65b15 EZ |
1730 | #define BIDI_MAXLEVEL 64 |
1731 | ||
29e3d8d1 EZ |
1732 | /* Data type for describing the bidirectional character types. The |
1733 | first 7 must be at the beginning, because they are the only values | |
1734 | valid in the `bidi_type' member of `struct glyph'; we only reserve | |
1735 | 3 bits for it, so we cannot use there values larger than 7. */ | |
b7b65b15 | 1736 | typedef enum { |
29e3d8d1 | 1737 | UNKNOWN_BT = 0, |
b7b65b15 EZ |
1738 | STRONG_L, /* strong left-to-right */ |
1739 | STRONG_R, /* strong right-to-left */ | |
29e3d8d1 EZ |
1740 | WEAK_EN, /* european number */ |
1741 | WEAK_AN, /* arabic number */ | |
1742 | WEAK_BN, /* boundary neutral */ | |
1743 | NEUTRAL_B, /* paragraph separator */ | |
b7b65b15 EZ |
1744 | STRONG_AL, /* arabic right-to-left letter */ |
1745 | LRE, /* left-to-right embedding */ | |
1746 | LRO, /* left-to-right override */ | |
1747 | RLE, /* right-to-left embedding */ | |
1748 | RLO, /* right-to-left override */ | |
1749 | PDF, /* pop directional format */ | |
b7b65b15 EZ |
1750 | WEAK_ES, /* european number separator */ |
1751 | WEAK_ET, /* european number terminator */ | |
b7b65b15 EZ |
1752 | WEAK_CS, /* common separator */ |
1753 | WEAK_NSM, /* non-spacing mark */ | |
b7b65b15 EZ |
1754 | NEUTRAL_S, /* segment separator */ |
1755 | NEUTRAL_WS, /* whitespace */ | |
1756 | NEUTRAL_ON /* other neutrals */ | |
1757 | } bidi_type_t; | |
1758 | ||
1759 | /* The basic directionality data type. */ | |
1760 | typedef enum { NEUTRAL_DIR, L2R, R2L } bidi_dir_t; | |
1761 | ||
1762 | /* Data type for storing information about characters we need to | |
1763 | remember. */ | |
1764 | struct bidi_saved_info { | |
1765 | int bytepos, charpos; /* character's buffer position */ | |
89d3374a EZ |
1766 | bidi_type_t type; /* character's resolved bidi type */ |
1767 | bidi_type_t type_after_w1; /* original type of the character, after W1 */ | |
1768 | bidi_type_t orig_type; /* type as we found it in the buffer */ | |
b7b65b15 EZ |
1769 | }; |
1770 | ||
1771 | /* Data type for keeping track of saved embedding levels and override | |
1772 | status information. */ | |
1773 | struct bidi_stack { | |
1774 | int level; | |
1775 | bidi_dir_t override; | |
1776 | }; | |
1777 | ||
1778 | /* Data type for iterating over bidi text. */ | |
1779 | struct bidi_it { | |
6bff6497 EZ |
1780 | EMACS_INT bytepos; /* iterator's position in buffer */ |
1781 | EMACS_INT charpos; | |
9c82e145 EZ |
1782 | int ch; /* character itself */ |
1783 | int ch_len; /* length of its multibyte sequence */ | |
89d3374a EZ |
1784 | bidi_type_t type; /* bidi type of this character, after |
1785 | resolving weak and neutral types */ | |
1786 | bidi_type_t type_after_w1; /* original type, after overrides and W1 */ | |
1787 | bidi_type_t orig_type; /* original type, as found in the buffer */ | |
b7b65b15 | 1788 | int resolved_level; /* final resolved level of this character */ |
9c82e145 EZ |
1789 | int invalid_levels; /* how many PDFs to ignore */ |
1790 | int invalid_rl_levels; /* how many PDFs from RLE/RLO to ignore */ | |
9c82e145 EZ |
1791 | int prev_was_pdf; /* if non-zero, previous char was PDF */ |
1792 | struct bidi_saved_info prev; /* info about previous character */ | |
b7b65b15 EZ |
1793 | struct bidi_saved_info last_strong; /* last-seen strong directional char */ |
1794 | struct bidi_saved_info next_for_neutral; /* surrounding characters for... */ | |
1795 | struct bidi_saved_info prev_for_neutral; /* ...resolving neutrals */ | |
1796 | struct bidi_saved_info next_for_ws; /* character after sequence of ws */ | |
6bff6497 EZ |
1797 | EMACS_INT next_en_pos; /* position of next EN char for ET */ |
1798 | EMACS_INT ignore_bn_limit; /* position until which to ignore BNs */ | |
b7b65b15 EZ |
1799 | bidi_dir_t sor; /* direction of start-of-run in effect */ |
1800 | int scan_dir; /* direction of text scan */ | |
1801 | int stack_idx; /* index of current data on the stack */ | |
e69a9370 EZ |
1802 | /* Note: Everything from here is not copied/saved when the bidi |
1803 | iterator state is saved, pushed, or popped. So only put here | |
1804 | stuff that is not part of the bidi iterator's state! */ | |
b7b65b15 | 1805 | struct bidi_stack level_stack[BIDI_MAXLEVEL]; /* stack of embedding levels */ |
e69a9370 EZ |
1806 | int first_elt; /* if non-zero, examine current char first */ |
1807 | bidi_dir_t paragraph_dir; /* current paragraph direction */ | |
1808 | int new_paragraph; /* if non-zero, we expect a new paragraph */ | |
1809 | EMACS_INT separator_limit; /* where paragraph separator should end */ | |
b7b65b15 EZ |
1810 | }; |
1811 | ||
e69a9370 EZ |
1812 | /* Value is non-zero when the bidi iterator is at base paragraph |
1813 | embedding level. */ | |
1814 | #define BIDI_AT_BASE_LEVEL(BIDI_IT) \ | |
1815 | (BIDI_IT).resolved_level == (BIDI_IT).level_stack[0].level | |
5f5c8ee5 GM |
1816 | |
1817 | \f | |
f4e1400d KS |
1818 | /*********************************************************************** |
1819 | Fringes | |
1820 | ***********************************************************************/ | |
1821 | ||
f4e1400d KS |
1822 | /* Structure used to describe where and how to draw a fringe bitmap. |
1823 | WHICH is the fringe bitmap to draw. WD and H is the (adjusted) | |
1824 | width and height of the bitmap, DH is the height adjustment (if | |
1825 | bitmap is periodic). X and Y are frame coordinates of the area to | |
1826 | display the bitmap, DY is relative offset of the bitmap into that | |
0633d52c | 1827 | area. BX, NX, BY, NY specifies the area to clear if the bitmap |
f4e1400d KS |
1828 | does not fill the entire area. FACE is the fringe face. */ |
1829 | ||
1830 | struct draw_fringe_bitmap_params | |
1831 | { | |
6b61353c KH |
1832 | int which; /* enum fringe_bitmap_type */ |
1833 | unsigned short *bits; | |
f4e1400d KS |
1834 | int wd, h, dh; |
1835 | int x, y; | |
1836 | int bx, nx, by, ny; | |
6b61353c KH |
1837 | unsigned cursor_p : 1; |
1838 | unsigned overlay_p : 1; | |
f4e1400d KS |
1839 | struct face *face; |
1840 | }; | |
1841 | ||
6b61353c | 1842 | #define MAX_FRINGE_BITMAPS (1<<FRINGE_ID_BITS) |
f4e1400d KS |
1843 | |
1844 | \f | |
5f5c8ee5 GM |
1845 | /*********************************************************************** |
1846 | Display Iterator | |
1847 | ***********************************************************************/ | |
1848 | ||
1849 | /* Iteration over things to display in current_buffer or in a string. | |
1850 | ||
1851 | The iterator handles: | |
1852 | ||
1853 | 1. Overlay strings (after-string, before-string). | |
1854 | 2. Face properties. | |
1855 | 3. Invisible text properties. | |
1856 | 4. Selective display. | |
1857 | 5. Translation of characters via display tables. | |
1858 | 6. Translation of control characters to the forms `\003' or `^C'. | |
1859 | 7. `glyph' and `space-width' properties. | |
1860 | ||
1861 | Iterators are initialized by calling init_iterator or one of the | |
1862 | equivalent functions below. A call to get_next_display_element | |
1863 | loads the iterator structure with information about what next to | |
1864 | display. A call to set_iterator_to_next increments the iterator's | |
1865 | position. | |
1866 | ||
1867 | Characters from overlay strings, display table entries or control | |
1868 | character translations are returned one at a time. For example, if | |
1869 | we have a text of `a\x01' where `a' has a display table definition | |
1870 | of `cd' and the control character is displayed with a leading | |
1871 | arrow, then the iterator will return: | |
1872 | ||
1873 | Call Return Source Call next | |
1874 | ----------------------------------------------------------------- | |
1875 | next c display table move | |
1876 | next d display table move | |
1877 | next ^ control char move | |
1878 | next A control char move | |
1879 | ||
1880 | The same mechanism is also used to return characters for ellipses | |
1881 | displayed at the end of invisible text. | |
1882 | ||
1883 | CAVEAT: Under some circumstances, move_.* functions can be called | |
1884 | asynchronously, e.g. when computing a buffer position from an x and | |
1885 | y pixel position. This means that these functions and functions | |
1886 | called from them SHOULD NOT USE xmalloc and alike. See also the | |
1887 | comment at the start of xdisp.c. */ | |
1888 | ||
1889 | /* Enumeration describing what kind of display element an iterator is | |
1890 | loaded with after a call to get_next_display_element. */ | |
1891 | ||
1892 | enum display_element_type | |
1893 | { | |
1894 | /* A normal character. */ | |
1895 | IT_CHARACTER, | |
1896 | ||
a88c7fcd | 1897 | /* A composition (static and automatic). */ |
a90fbbf6 KH |
1898 | IT_COMPOSITION, |
1899 | ||
5f5c8ee5 GM |
1900 | /* An image. */ |
1901 | IT_IMAGE, | |
1902 | ||
1903 | /* A flexible width and height space. */ | |
1904 | IT_STRETCH, | |
1905 | ||
1906 | /* End of buffer or string. */ | |
1907 | IT_EOB, | |
1908 | ||
1909 | /* Truncation glyphs. Never returned by get_next_display_element. | |
1910 | Used to get display information about truncation glyphs via | |
1911 | produce_glyphs. */ | |
1912 | IT_TRUNCATION, | |
1913 | ||
1914 | /* Continuation glyphs. See the comment for IT_TRUNCATION. */ | |
1915 | IT_CONTINUATION | |
1916 | }; | |
1917 | ||
1918 | ||
1919 | /* An enumerator for each text property that has a meaning for display | |
1920 | purposes. */ | |
1921 | ||
1922 | enum prop_idx | |
1923 | { | |
1924 | FONTIFIED_PROP_IDX, | |
1925 | FACE_PROP_IDX, | |
1926 | INVISIBLE_PROP_IDX, | |
1927 | DISPLAY_PROP_IDX, | |
a90fbbf6 | 1928 | COMPOSITION_PROP_IDX, |
5f5c8ee5 GM |
1929 | |
1930 | /* Not a property. Used to indicate changes in overlays. */ | |
1931 | OVERLAY_PROP_IDX, | |
1932 | ||
1933 | /* Sentinel. */ | |
1934 | LAST_PROP_IDX | |
1935 | }; | |
1936 | ||
bf7a8847 CY |
1937 | /* An enumerator for the method of wrapping long lines. */ |
1938 | ||
1939 | enum line_wrap_method | |
1940 | { | |
1941 | TRUNCATE, | |
1942 | WORD_WRAP, | |
1943 | WINDOW_WRAP | |
1944 | }; | |
5f5c8ee5 | 1945 | |
0633d52c KS |
1946 | struct it_slice |
1947 | { | |
1948 | Lisp_Object x; | |
1949 | Lisp_Object y; | |
1950 | Lisp_Object width; | |
1951 | Lisp_Object height; | |
1952 | }; | |
1953 | ||
490943fe RS |
1954 | /* Input sources for fetching characters or data to display. |
1955 | The input source is found in the `method' field. */ | |
1956 | ||
6a88f968 KS |
1957 | enum it_method { |
1958 | GET_FROM_BUFFER = 0, | |
1959 | GET_FROM_DISPLAY_VECTOR, | |
6a88f968 KS |
1960 | GET_FROM_STRING, |
1961 | GET_FROM_C_STRING, | |
1962 | GET_FROM_IMAGE, | |
1963 | GET_FROM_STRETCH, | |
1964 | NUM_IT_METHODS | |
1965 | }; | |
0633d52c | 1966 | |
90fcfd71 | 1967 | #define IT_STACK_SIZE 5 |
946a79d0 | 1968 | |
a88c7fcd KH |
1969 | /* Iterator for composition (both for static and automatic). */ |
1970 | struct composition_it | |
1971 | { | |
1972 | /* Next position at which to check the composition. */ | |
1973 | EMACS_INT stop_pos; | |
1974 | /* ID number of the composition or glyph-string. If negative, we | |
1975 | are not iterating over a composition now. */ | |
1976 | int id; | |
1977 | /* If non-negative, character that triggers the automatic | |
1978 | composition at `stop_pos', and this is an automatic compositoin. | |
6450412d KH |
1979 | If negative, this is a static composition. This is set to -2 |
1980 | temporarily if searching of composition reach a limit or a | |
1981 | newline. */ | |
a88c7fcd | 1982 | int ch; |
22e33406 | 1983 | /* If this an automatic composition, how many characters to look back |
cbf21103 KH |
1984 | from the position where a character triggering the composition |
1985 | exists. */ | |
1986 | int lookback; | |
a88c7fcd KH |
1987 | /* If non-negative, number of glyphs of the glyph-string. */ |
1988 | int nglyphs; | |
1989 | /* Number of characters and bytes of the current grapheme cluster. */ | |
1990 | int nchars, nbytes; | |
1991 | /* Indices of the glyphs for the current grapheme cluster. */ | |
1992 | int from, to; | |
1993 | /* Width of the current grapheme cluster in units of pixels on a | |
1994 | graphic display and in units of canonical characters on a | |
1995 | terminal display. */ | |
1996 | int width; | |
1997 | }; | |
1998 | ||
5f5c8ee5 GM |
1999 | struct it |
2000 | { | |
2001 | /* The window in which we iterate over current_buffer (or a string). */ | |
2002 | Lisp_Object window; | |
2003 | struct window *w; | |
2004 | ||
2005 | /* The window's frame. */ | |
2006 | struct frame *f; | |
2007 | ||
6a88f968 KS |
2008 | /* Method to use to load this structure with the next display element. */ |
2009 | enum it_method method; | |
5f5c8ee5 GM |
2010 | |
2011 | /* The next position at which to check for face changes, invisible | |
2012 | text, overlay strings, end of text etc., which see. */ | |
05fe33ff | 2013 | EMACS_INT stop_charpos; |
5f5c8ee5 | 2014 | |
e69a9370 EZ |
2015 | /* Previous stop position, i.e. the last one before the current |
2016 | buffer position. */ | |
2017 | EMACS_INT prev_stop; | |
2018 | ||
2019 | /* Last stop_pos at the current paragraph's embedding level. */ | |
2020 | EMACS_INT base_level_stop; | |
2021 | ||
5f5c8ee5 GM |
2022 | /* Maximum string or buffer position + 1. ZV when iterating over |
2023 | current_buffer. */ | |
05fe33ff | 2024 | EMACS_INT end_charpos; |
5f5c8ee5 GM |
2025 | |
2026 | /* C string to iterate over. Non-null means get characters from | |
2027 | this string, otherwise characters are read from current_buffer | |
2028 | or it->string. */ | |
2029 | unsigned char *s; | |
2030 | ||
2031 | /* Number of characters in the string (s, or it->string) we iterate | |
2032 | over. */ | |
2033 | int string_nchars; | |
2034 | ||
2035 | /* Start and end of a visible region; -1 if the region is not | |
2036 | visible in the window. */ | |
05fe33ff | 2037 | EMACS_INT region_beg_charpos, region_end_charpos; |
5f5c8ee5 GM |
2038 | |
2039 | /* Position at which redisplay end trigger functions should be run. */ | |
05fe33ff | 2040 | EMACS_INT redisplay_end_trigger_charpos; |
5f5c8ee5 GM |
2041 | |
2042 | /* 1 means multibyte characters are enabled. */ | |
2043 | unsigned multibyte_p : 1; | |
2044 | ||
5f5c8ee5 | 2045 | /* 1 means window has a mode line at its top. */ |
045dee35 | 2046 | unsigned header_line_p : 1; |
5f5c8ee5 GM |
2047 | |
2048 | /* 1 means `string' is the value of a `display' property. | |
2049 | Don't handle some `display' properties in these strings. */ | |
2050 | unsigned string_from_display_prop_p : 1; | |
2051 | ||
b437860a RS |
2052 | /* When METHOD == next_element_from_display_vector, |
2053 | this is 1 if we're doing an ellipsis. Otherwise meaningless. */ | |
2054 | unsigned ellipsis_p : 1; | |
2055 | ||
c4f4682b MB |
2056 | /* True means cursor shouldn't be displayed here. */ |
2057 | unsigned avoid_cursor_p : 1; | |
2058 | ||
5f5c8ee5 GM |
2059 | /* Display table in effect or null for none. */ |
2060 | struct Lisp_Char_Table *dp; | |
2061 | ||
2062 | /* Current display table vector to return characters from and its | |
2063 | end. dpvec null means we are not returning characters from a | |
2064 | display table entry; current.dpvec_index gives the current index | |
2065 | into dpvec. This same mechanism is also used to return | |
2066 | characters from translated control characters, i.e. `\003' or | |
2067 | `^C'. */ | |
2068 | Lisp_Object *dpvec, *dpend; | |
2069 | ||
2070 | /* Length in bytes of the char that filled dpvec. A value of zero | |
54bff0bd | 2071 | means that no such character is involved. */ |
5f5c8ee5 GM |
2072 | int dpvec_char_len; |
2073 | ||
888ca1e7 KS |
2074 | /* Face id to use for all characters in display vector. -1 if unused. */ |
2075 | int dpvec_face_id; | |
2076 | ||
5f5c8ee5 GM |
2077 | /* Face id of the iterator saved in case a glyph from dpvec contains |
2078 | a face. The face is restored when all glyphs from dpvec have | |
2079 | been delivered. */ | |
2080 | int saved_face_id; | |
2081 | ||
2082 | /* Vector of glyphs for control character translation. The pointer | |
4659838f KH |
2083 | dpvec is set to ctl_chars when a control character is translated. |
2084 | This vector is also used for incomplete multibyte character | |
8d5b986d GM |
2085 | translation (e.g \222\244). Such a character is at most 4 bytes, |
2086 | thus we need at most 16 bytes here. */ | |
2087 | Lisp_Object ctl_chars[16]; | |
5f5c8ee5 | 2088 | |
6b61353c KH |
2089 | /* Initial buffer or string position of the iterator, before skipping |
2090 | over display properties and invisible text. */ | |
2091 | struct display_pos start; | |
2092 | ||
5f5c8ee5 GM |
2093 | /* Current buffer or string position of the iterator, including |
2094 | position in overlay strings etc. */ | |
2095 | struct display_pos current; | |
2096 | ||
c69a28f1 RS |
2097 | /* Total number of overlay strings to process. This can be > |
2098 | OVERLAY_STRING_CHUNK_SIZE. */ | |
2099 | int n_overlay_strings; | |
2100 | ||
5f5c8ee5 GM |
2101 | /* Vector of overlays to process. Overlay strings are processed |
2102 | OVERLAY_STRING_CHUNK_SIZE at a time. */ | |
e9323aed | 2103 | #define OVERLAY_STRING_CHUNK_SIZE 16 |
5f5c8ee5 GM |
2104 | Lisp_Object overlay_strings[OVERLAY_STRING_CHUNK_SIZE]; |
2105 | ||
c69a28f1 | 2106 | /* For each overlay string, the overlay it came from. */ |
c69a28f1 | 2107 | Lisp_Object string_overlays[OVERLAY_STRING_CHUNK_SIZE]; |
5f5c8ee5 GM |
2108 | |
2109 | /* If non-nil, a Lisp string being processed. If | |
2110 | current.overlay_string_index >= 0, this is an overlay string from | |
2111 | pos. */ | |
2112 | Lisp_Object string; | |
2113 | ||
c69a28f1 RS |
2114 | /* If non-nil, we are processing a string that came |
2115 | from a `display' property given by an overlay. */ | |
2116 | Lisp_Object from_overlay; | |
2117 | ||
5f5c8ee5 GM |
2118 | /* Stack of saved values. New entries are pushed when we begin to |
2119 | process an overlay string or a string from a `glyph' property. | |
2120 | Entries are popped when we return to deliver display elements | |
2121 | from what we previously had. */ | |
2122 | struct iterator_stack_entry | |
9f2279ad | 2123 | { |
128ce5c6 KS |
2124 | Lisp_Object string; |
2125 | int string_nchars; | |
05fe33ff EZ |
2126 | EMACS_INT end_charpos; |
2127 | EMACS_INT stop_charpos; | |
e69a9370 EZ |
2128 | EMACS_INT prev_stop; |
2129 | EMACS_INT base_level_stop; | |
a88c7fcd | 2130 | struct composition_it cmp_it; |
5f5c8ee5 | 2131 | int face_id; |
128ce5c6 KS |
2132 | |
2133 | /* Save values specific to a given method. */ | |
fd00a1e8 | 2134 | union { |
128ce5c6 | 2135 | /* method == GET_FROM_IMAGE */ |
fd00a1e8 KS |
2136 | struct { |
2137 | Lisp_Object object; | |
2138 | struct it_slice slice; | |
2139 | int image_id; | |
2140 | } image; | |
128ce5c6 | 2141 | /* method == GET_FROM_COMPOSITION */ |
fd00a1e8 KS |
2142 | struct { |
2143 | Lisp_Object object; | |
fd00a1e8 | 2144 | } comp; |
128ce5c6 | 2145 | /* method == GET_FROM_STRETCH */ |
fd00a1e8 KS |
2146 | struct { |
2147 | Lisp_Object object; | |
2148 | } stretch; | |
2149 | } u; | |
128ce5c6 KS |
2150 | |
2151 | /* current text and display positions. */ | |
2152 | struct text_pos position; | |
2153 | struct display_pos current; | |
c69a28f1 | 2154 | Lisp_Object from_overlay; |
5f5c8ee5 | 2155 | enum glyph_row_area area; |
946a79d0 | 2156 | enum it_method method; |
5f5c8ee5 GM |
2157 | unsigned multibyte_p : 1; |
2158 | unsigned string_from_display_prop_p : 1; | |
88378b0d | 2159 | unsigned display_ellipsis_p : 1; |
c4f4682b | 2160 | unsigned avoid_cursor_p : 1; |
e966384d | 2161 | enum line_wrap_method line_wrap; |
128ce5c6 KS |
2162 | |
2163 | /* properties from display property that are reset by another display property. */ | |
85c66abe | 2164 | short voffset; |
5f5c8ee5 | 2165 | Lisp_Object space_width; |
5f5c8ee5 GM |
2166 | Lisp_Object font_height; |
2167 | } | |
946a79d0 | 2168 | stack[IT_STACK_SIZE]; |
dfbb1e90 | 2169 | |
5f5c8ee5 GM |
2170 | /* Stack pointer. */ |
2171 | int sp; | |
177c0ea7 | 2172 | |
5f5c8ee5 GM |
2173 | /* -1 means selective display hides everything between a \r and the |
2174 | next newline; > 0 means hide lines indented more than that value. */ | |
2175 | int selective; | |
2176 | ||
2177 | /* An enumeration describing what the next display element is | |
2178 | after a call to get_next_display_element. */ | |
2179 | enum display_element_type what; | |
dfbb1e90 | 2180 | |
5f5c8ee5 GM |
2181 | /* Face to use. */ |
2182 | int face_id; | |
2183 | ||
c69a28f1 RS |
2184 | /* Setting of buffer-local variable selective-display-ellipsis. */ |
2185 | unsigned selective_display_ellipsis_p : 1; | |
2186 | ||
2187 | /* 1 means control characters are translated into the form `^C' | |
2188 | where the `^' can be replaced by a display table entry. */ | |
2189 | unsigned ctl_arrow_p : 1; | |
2190 | ||
5f5c8ee5 GM |
2191 | /* Non-zero means that the current face has a box. */ |
2192 | unsigned face_box_p : 1; | |
2193 | ||
2194 | /* Non-null means that the current character is the first in a run | |
2195 | of characters with box face. */ | |
2196 | unsigned start_of_box_run_p : 1; | |
177c0ea7 | 2197 | |
5f5c8ee5 GM |
2198 | /* Non-zero means that the current character is the last in a run |
2199 | of characters with box face. */ | |
2200 | unsigned end_of_box_run_p : 1; | |
2201 | ||
2202 | /* 1 means overlay strings at end_charpos have been processed. */ | |
2203 | unsigned overlay_strings_at_end_processed_p : 1; | |
2204 | ||
fcc38f6d KS |
2205 | /* 1 means to ignore overlay strings at current pos, as they have |
2206 | already been processed. */ | |
2207 | unsigned ignore_overlay_strings_at_pos_p : 1; | |
2208 | ||
b3091a23 KH |
2209 | /* 1 means the actual glyph is not available in the current |
2210 | system. */ | |
666852af GM |
2211 | unsigned glyph_not_available_p : 1; |
2212 | ||
2213 | /* 1 means the next line in display_line continues a character | |
2214 | consisting of more than one glyph, and some glyphs of this | |
2215 | character have been put on the previous line. */ | |
2216 | unsigned starts_in_middle_of_char_p : 1; | |
b3091a23 | 2217 | |
4d2036e4 GM |
2218 | /* If 1, saved_face_id contains the id of the face in front of text |
2219 | skipped due to selective display. */ | |
2220 | unsigned face_before_selective_p : 1; | |
2221 | ||
0633d52c | 2222 | /* If 1, adjust current glyph so it does not increase current row |
7293ac29 | 2223 | descent/ascent (line-height property). Reset after this glyph. */ |
0633d52c KS |
2224 | unsigned constrain_row_ascent_descent_p : 1; |
2225 | ||
85c66abe DN |
2226 | enum line_wrap_method line_wrap; |
2227 | ||
5f5c8ee5 | 2228 | /* The ID of the default face to use. One of DEFAULT_FACE_ID, |
4d2036e4 | 2229 | MODE_LINE_FACE_ID, etc, depending on what we are displaying. */ |
5f5c8ee5 GM |
2230 | int base_face_id; |
2231 | ||
2232 | /* If what == IT_CHARACTER, character and length in bytes. This is | |
2233 | a character from a buffer or string. It may be different from | |
2234 | the character displayed in case that | |
a90fbbf6 KH |
2235 | unibyte_display_via_language_environment is set. |
2236 | ||
2237 | If what == IT_COMPOSITION, the first component of a composition | |
2238 | and length in bytes of the composition. */ | |
5f5c8ee5 GM |
2239 | int c, len; |
2240 | ||
a88c7fcd KH |
2241 | /* If what == IT_COMPOSITION, iterator substructure for the |
2242 | composition. */ | |
2243 | struct composition_it cmp_it; | |
a90fbbf6 | 2244 | |
5f5c8ee5 GM |
2245 | /* The character to display, possibly translated to multibyte |
2246 | if unibyte_display_via_language_environment is set. This | |
d5cc60b8 | 2247 | is set after produce_glyphs has been called. */ |
5f5c8ee5 GM |
2248 | int char_to_display; |
2249 | ||
5f5c8ee5 GM |
2250 | /* If what == IT_IMAGE, the id of the image to display. */ |
2251 | int image_id; | |
2252 | ||
0633d52c KS |
2253 | /* Values from `slice' property. */ |
2254 | struct it_slice slice; | |
2255 | ||
5f5c8ee5 GM |
2256 | /* Value of the `space-width' property, if any; nil if none. */ |
2257 | Lisp_Object space_width; | |
2258 | ||
2259 | /* Computed from the value of the `raise' property. */ | |
2260 | short voffset; | |
2261 | ||
85c66abe DN |
2262 | /* Number of columns per \t. */ |
2263 | short tab_width; | |
2264 | ||
5f5c8ee5 GM |
2265 | /* Value of the `height' property, if any; nil if none. */ |
2266 | Lisp_Object font_height; | |
2267 | ||
2268 | /* Object and position where the current display element came from. | |
2269 | Object can be a Lisp string in case the current display element | |
f38e5748 KS |
2270 | comes from an overlay string, or it is buffer. It may also be nil |
2271 | during mode-line update. Position is a position in object. */ | |
5f5c8ee5 GM |
2272 | Lisp_Object object; |
2273 | struct text_pos position; | |
2274 | ||
5f5c8ee5 GM |
2275 | /* Width in pixels of truncation and continuation glyphs. */ |
2276 | short truncation_pixel_width, continuation_pixel_width; | |
2277 | ||
2278 | /* First and last visible x-position in the display area. If window | |
87388f9d | 2279 | is hscrolled by n columns, first_visible_x == n * FRAME_COLUMN_WIDTH |
5f5c8ee5 GM |
2280 | (f), and last_visible_x == pixel width of W + first_visible_x. */ |
2281 | int first_visible_x, last_visible_x; | |
2282 | ||
2283 | /* Last visible y-position + 1 in the display area without a mode | |
2284 | line, if the window has one. */ | |
2285 | int last_visible_y; | |
2286 | ||
db0c5a7d KS |
2287 | /* Default amount of additional space in pixels between lines (for |
2288 | window systems only.) */ | |
bf95c413 | 2289 | int extra_line_spacing; |
5f5c8ee5 | 2290 | |
db0c5a7d KS |
2291 | /* Max extra line spacing added in this row. */ |
2292 | int max_extra_line_spacing; | |
2293 | ||
d956147c KS |
2294 | /* Override font height information for this glyph. |
2295 | Used if override_ascent >= 0. Cleared after this glyph. */ | |
2296 | int override_ascent, override_descent, override_boff; | |
2297 | ||
5f5c8ee5 GM |
2298 | /* If non-null, glyphs are produced in glyph_row with each call to |
2299 | produce_glyphs. */ | |
2300 | struct glyph_row *glyph_row; | |
2301 | ||
2302 | /* The area of glyph_row to which glyphs are added. */ | |
2303 | enum glyph_row_area area; | |
2304 | ||
2305 | /* Number of glyphs needed for the last character requested via | |
2306 | produce_glyphs. This is 1 except for tabs. */ | |
2307 | int nglyphs; | |
177c0ea7 | 2308 | |
5f5c8ee5 GM |
2309 | /* Width of the display element in pixels. Result of |
2310 | produce_glyphs. */ | |
2311 | int pixel_width; | |
2312 | ||
2febf6e0 GM |
2313 | /* Current, maximum logical, and maximum physical line height |
2314 | information. Result of produce_glyphs. */ | |
5f5c8ee5 | 2315 | int ascent, descent, max_ascent, max_descent; |
2febf6e0 | 2316 | int phys_ascent, phys_descent, max_phys_ascent, max_phys_descent; |
5f5c8ee5 GM |
2317 | |
2318 | /* Current x pixel position within the display line. This value | |
2319 | does not include the width of continuation lines in front of the | |
2320 | line. The value of current_x is automatically incremented by | |
2321 | pixel_width with each call to produce_glyphs. */ | |
2322 | int current_x; | |
2323 | ||
2324 | /* Accumulated width of continuation lines. If > 0, this means we | |
2325 | are currently in a continuation line. This is initially zero and | |
2326 | incremented/reset by display_line, move_it_to etc. */ | |
2327 | int continuation_lines_width; | |
2328 | ||
2329 | /* Current y-position. Automatically incremented by the height of | |
2330 | glyph_row in move_it_to and display_line. */ | |
2331 | int current_y; | |
2332 | ||
6b61353c KH |
2333 | /* Vertical matrix position of first text line in window. */ |
2334 | int first_vpos; | |
2335 | ||
5f5c8ee5 GM |
2336 | /* Current vertical matrix position, or line number. Automatically |
2337 | incremented by move_it_to and display_line. */ | |
2338 | int vpos; | |
2339 | ||
2340 | /* Horizontal matrix position reached in move_it_in_display_line. | |
2341 | Only set there, not in display_line. */ | |
2342 | int hpos; | |
6b61353c KH |
2343 | |
2344 | /* Left fringe bitmap number (enum fringe_bitmap_type). */ | |
2345 | unsigned left_user_fringe_bitmap : FRINGE_ID_BITS; | |
2346 | ||
6b61353c KH |
2347 | /* Right fringe bitmap number (enum fringe_bitmap_type). */ |
2348 | unsigned right_user_fringe_bitmap : FRINGE_ID_BITS; | |
2349 | ||
b3b08f03 KS |
2350 | /* Face of the left fringe glyph. */ |
2351 | unsigned left_user_fringe_face_id : FACE_ID_BITS; | |
2352 | ||
6b61353c KH |
2353 | /* Face of the right fringe glyph. */ |
2354 | unsigned right_user_fringe_face_id : FACE_ID_BITS; | |
b7b65b15 | 2355 | |
f44e260c EZ |
2356 | /* Non-zero means we need to reorder bidirectional text for display |
2357 | in the visual order. */ | |
b7b65b15 EZ |
2358 | int bidi_p; |
2359 | ||
f44e260c | 2360 | /* For iterating over bidirectional text. */ |
b7b65b15 | 2361 | struct bidi_it bidi_it; |
b44d9321 | 2362 | bidi_dir_t paragraph_embedding; |
5f5c8ee5 GM |
2363 | }; |
2364 | ||
2365 | ||
2366 | /* Access to positions of iterator IT. */ | |
2367 | ||
2368 | #define IT_CHARPOS(IT) CHARPOS ((IT).current.pos) | |
2369 | #define IT_BYTEPOS(IT) BYTEPOS ((IT).current.pos) | |
2370 | #define IT_STRING_CHARPOS(IT) CHARPOS ((IT).current.string_pos) | |
2371 | #define IT_STRING_BYTEPOS(IT) BYTEPOS ((IT).current.string_pos) | |
2372 | ||
2373 | /* Test if IT has reached the end of its buffer or string. This will | |
2374 | only work after get_next_display_element has been called. */ | |
2375 | ||
2376 | #define ITERATOR_AT_END_P(IT) ((IT)->what == IT_EOB) | |
2377 | ||
2378 | /* Non-zero means IT is at the end of a line. This is the case if it | |
2379 | is either on a newline or on a carriage return and selective | |
2380 | display hides the rest of the line. */ | |
2381 | ||
2382 | #define ITERATOR_AT_END_OF_LINE_P(IT) \ | |
2383 | ((IT)->what == IT_CHARACTER \ | |
2384 | && ((IT)->c == '\n' \ | |
2385 | || ((IT)->c == '\r' && (IT)->selective))) | |
2386 | ||
2387 | /* Call produce_glyphs or produce_glyphs_hook, if set. Shortcut to | |
2388 | avoid the function call overhead. */ | |
2389 | ||
fa971ac3 KL |
2390 | #define PRODUCE_GLYPHS(IT) \ |
2391 | do { \ | |
2392 | extern int inhibit_free_realized_faces; \ | |
2393 | if (FRAME_RIF ((IT)->f) != NULL) \ | |
2394 | FRAME_RIF ((IT)->f)->produce_glyphs ((IT)); \ | |
2395 | else \ | |
2396 | produce_glyphs ((IT)); \ | |
2397 | if ((IT)->glyph_row != NULL) \ | |
2398 | inhibit_free_realized_faces = 1; \ | |
2399 | } while (0) | |
5f5c8ee5 GM |
2400 | |
2401 | /* Bit-flags indicating what operation move_it_to should perform. */ | |
2402 | ||
2403 | enum move_operation_enum | |
2404 | { | |
2405 | /* Stop if specified x-position is reached. */ | |
2406 | MOVE_TO_X = 0x01, | |
2407 | ||
2408 | /* Stop if specified y-position is reached. */ | |
2409 | MOVE_TO_Y = 0x02, | |
2410 | ||
2411 | /* Stop if specified vpos is reached. */ | |
2412 | MOVE_TO_VPOS = 0x04, | |
2413 | ||
2414 | /* Stop if specified buffer or string position is reached. */ | |
2415 | MOVE_TO_POS = 0x08 | |
2416 | }; | |
2417 | ||
2418 | ||
2419 | \f | |
2420 | /*********************************************************************** | |
2421 | Window-based redisplay interface | |
2422 | ***********************************************************************/ | |
2423 | ||
2424 | /* Structure used to describe runs of lines that must be scrolled. */ | |
2425 | ||
2426 | struct run | |
2427 | { | |
2428 | /* Source and destination y pixel position. */ | |
2429 | int desired_y, current_y; | |
2430 | ||
2431 | /* Source and destination vpos in matrix. */ | |
2432 | int desired_vpos, current_vpos; | |
2433 | ||
2434 | /* Height in pixels, number of glyph rows. */ | |
2435 | int height, nrows; | |
2436 | }; | |
2437 | ||
2438 | ||
e6b3aecd KS |
2439 | /* Handlers for setting frame parameters. */ |
2440 | ||
2441 | typedef void (*frame_parm_handler) P_ ((struct frame *, Lisp_Object, Lisp_Object)); | |
2442 | ||
2443 | ||
5f5c8ee5 GM |
2444 | /* Structure holding system-dependent interface functions needed |
2445 | for window-based redisplay. */ | |
2446 | ||
2447 | struct redisplay_interface | |
2448 | { | |
e6b3aecd KS |
2449 | /* Handlers for setting frame parameters. */ |
2450 | frame_parm_handler *frame_parm_handlers; | |
2451 | ||
5f5c8ee5 GM |
2452 | /* Produce glyphs/get display metrics for the display element IT is |
2453 | loaded with. */ | |
2454 | void (*produce_glyphs) P_ ((struct it *it)); | |
177c0ea7 | 2455 | |
5f5c8ee5 GM |
2456 | /* Write or insert LEN glyphs from STRING at the nominal output |
2457 | position. */ | |
2458 | void (*write_glyphs) P_ ((struct glyph *string, int len)); | |
2459 | void (*insert_glyphs) P_ ((struct glyph *start, int len)); | |
2460 | ||
2461 | /* Clear from nominal output position to X. X < 0 means clear | |
2462 | to right end of display. */ | |
2463 | void (*clear_end_of_line) P_ ((int x)); | |
177c0ea7 | 2464 | |
5f5c8ee5 GM |
2465 | /* Function to call to scroll the display as described by RUN on |
2466 | window W. */ | |
2467 | void (*scroll_run_hook) P_ ((struct window *w, struct run *run)); | |
2468 | ||
2469 | /* Function to call after a line in a display has been completely | |
2470 | updated. Used to draw truncation marks and alike. DESIRED_ROW | |
2471 | is the desired row which has been updated. */ | |
2472 | void (*after_update_window_line_hook) P_ ((struct glyph_row *desired_row)); | |
42087301 | 2473 | |
5f5c8ee5 GM |
2474 | /* Function to call before beginning to update window W in |
2475 | window-based redisplay. */ | |
2476 | void (*update_window_begin_hook) P_ ((struct window *w)); | |
2477 | ||
2478 | /* Function to call after window W has been updated in window-based | |
712eaef2 GM |
2479 | redisplay. CURSOR_ON_P non-zero means switch cursor on. |
2480 | MOUSE_FACE_OVERWRITTEN_P non-zero means that some lines in W | |
2481 | that contained glyphs in mouse-face were overwritten, so we | |
54bff0bd | 2482 | have to update the mouse highlight. */ |
712eaef2 GM |
2483 | void (*update_window_end_hook) P_ ((struct window *w, int cursor_on_p, |
2484 | int mouse_face_overwritten_p)); | |
177c0ea7 | 2485 | |
5f5c8ee5 GM |
2486 | /* Move cursor to row/column position VPOS/HPOS, pixel coordinates |
2487 | Y/X. HPOS/VPOS are window-relative row and column numbers and X/Y | |
2488 | are window-relative pixel positions. */ | |
2489 | void (*cursor_to) P_ ((int vpos, int hpos, int y, int x)); | |
2490 | ||
2491 | /* Flush the display of frame F. For X, this is XFlush. */ | |
2492 | void (*flush_display) P_ ((struct frame *f)); | |
2493 | ||
d74b2553 KS |
2494 | /* Flush the display of frame F if non-NULL. This is called |
2495 | during redisplay, and should be NULL on systems which flushes | |
2496 | automatically before reading input. */ | |
2497 | void (*flush_display_optional) P_ ((struct frame *f)); | |
2498 | ||
ec68e323 | 2499 | /* Clear the mouse hightlight in window W, if there is any. */ |
d74b2553 | 2500 | void (*clear_window_mouse_face) P_ ((struct window *w)); |
712eaef2 | 2501 | |
5f5c8ee5 GM |
2502 | /* Set *LEFT and *RIGHT to the left and right overhang of GLYPH on |
2503 | frame F. */ | |
2504 | void (*get_glyph_overhangs) P_ ((struct glyph *glyph, struct frame *f, | |
2505 | int *left, int *right)); | |
2febf6e0 GM |
2506 | |
2507 | /* Fix the display of AREA of ROW in window W for overlapping rows. | |
2508 | This function is called from redraw_overlapping_rows after | |
2509 | desired rows have been made current. */ | |
2510 | void (*fix_overlapping_area) P_ ((struct window *w, struct glyph_row *row, | |
10a07952 | 2511 | enum glyph_row_area area, int)); |
f4e1400d | 2512 | |
79fa9e0f KS |
2513 | #ifdef HAVE_WINDOW_SYSTEM |
2514 | ||
f4e1400d KS |
2515 | /* Draw a fringe bitmap in window W of row ROW using parameters P. */ |
2516 | void (*draw_fringe_bitmap) P_ ((struct window *w, struct glyph_row *row, | |
2517 | struct draw_fringe_bitmap_params *p)); | |
2518 | ||
6b61353c KH |
2519 | /* Define and destroy fringe bitmap no. WHICH. */ |
2520 | void (*define_fringe_bitmap) P_ ((int which, unsigned short *bits, | |
2521 | int h, int wd)); | |
2522 | void (*destroy_fringe_bitmap) P_ ((int which)); | |
2523 | ||
0633d52c | 2524 | /* Compute left and right overhang of glyph string S. |
d5cc60b8 KS |
2525 | A NULL pointer if platform does not support this. */ |
2526 | void (*compute_glyph_string_overhangs) P_ ((struct glyph_string *s)); | |
2527 | ||
2528 | /* Draw a glyph string S. */ | |
2529 | void (*draw_glyph_string) P_ ((struct glyph_string *s)); | |
2530 | ||
d74b2553 KS |
2531 | /* Define cursor CURSOR on frame F. */ |
2532 | void (*define_frame_cursor) P_ ((struct frame *f, Cursor cursor)); | |
5f5c8ee5 | 2533 | |
d74b2553 KS |
2534 | /* Clear the area at (X,Y,WIDTH,HEIGHT) of frame F. */ |
2535 | void (*clear_frame_area) P_ ((struct frame *f, int x, int y, | |
2536 | int width, int height)); | |
5f5c8ee5 | 2537 | |
e5a3b7d9 KS |
2538 | /* Draw specified cursor CURSOR_TYPE of width CURSOR_WIDTH |
2539 | at row GLYPH_ROW on window W if ON_P is 1. If ON_P is | |
2540 | 0, don't draw cursor. If ACTIVE_P is 1, system caret | |
2541 | should track this cursor (when applicable). */ | |
d74b2553 KS |
2542 | void (*draw_window_cursor) P_ ((struct window *w, |
2543 | struct glyph_row *glyph_row, | |
e5a3b7d9 KS |
2544 | int x, int y, |
2545 | int cursor_type, int cursor_width, | |
2546 | int on_p, int active_p)); | |
5f5c8ee5 | 2547 | |
d74b2553 KS |
2548 | /* Draw vertical border for window W from (X,Y0) to (X,Y1). */ |
2549 | void (*draw_vertical_window_border) P_ ((struct window *w, | |
2550 | int x, int y0, int y1)); | |
d5cc60b8 | 2551 | |
0633d52c | 2552 | /* Shift display of frame F to make room for inserted glyphs. |
d74b2553 KS |
2553 | The area at pixel (X,Y) of width WIDTH and height HEIGHT is |
2554 | shifted right by SHIFT_BY pixels. */ | |
2555 | void (*shift_glyphs_for_insert) P_ ((struct frame *f, | |
2556 | int x, int y, int width, | |
2557 | int height, int shift_by)); | |
d5cc60b8 | 2558 | |
d74b2553 KS |
2559 | #endif /* HAVE_WINDOW_SYSTEM */ |
2560 | }; | |
d5cc60b8 | 2561 | |
5f5c8ee5 GM |
2562 | \f |
2563 | /*********************************************************************** | |
2564 | Images | |
2565 | ***********************************************************************/ | |
2566 | ||
4397e334 | 2567 | #ifdef HAVE_WINDOW_SYSTEM |
5f5c8ee5 GM |
2568 | |
2569 | /* Structure forward declarations. */ | |
2570 | ||
2571 | struct image; | |
2572 | ||
2573 | ||
54bff0bd | 2574 | /* Each image format (JPEG, TIFF, ...) supported is described by |
5f5c8ee5 GM |
2575 | a structure of the type below. */ |
2576 | ||
2577 | struct image_type | |
2578 | { | |
2579 | /* A symbol uniquely identifying the image type, .e.g `jpeg'. */ | |
2580 | Lisp_Object *type; | |
2581 | ||
2582 | /* Check that SPEC is a valid image specification for the given | |
2583 | image type. Value is non-zero if SPEC is valid. */ | |
2584 | int (* valid_p) P_ ((Lisp_Object spec)); | |
2585 | ||
2586 | /* Load IMG which is used on frame F from information contained in | |
2587 | IMG->spec. Value is non-zero if successful. */ | |
2588 | int (* load) P_ ((struct frame *f, struct image *img)); | |
2589 | ||
2590 | /* Free resources of image IMG which is used on frame F. */ | |
2591 | void (* free) P_ ((struct frame *f, struct image *img)); | |
9f2279ad | 2592 | |
5f5c8ee5 GM |
2593 | /* Next in list of all supported image types. */ |
2594 | struct image_type *next; | |
2595 | }; | |
9f2279ad | 2596 | |
9f2279ad | 2597 | |
5f5c8ee5 GM |
2598 | /* Structure describing an image. Specific image formats like XBM are |
2599 | converted into this form, so that display only has to deal with | |
2600 | this type of image. */ | |
9f2279ad | 2601 | |
5f5c8ee5 GM |
2602 | struct image |
2603 | { | |
2604 | /* The time in seconds at which the image was last displayed. Set | |
2605 | in prepare_image_for_display. */ | |
2606 | unsigned long timestamp; | |
9f2279ad | 2607 | |
5f5c8ee5 GM |
2608 | /* Pixmaps of the image. */ |
2609 | Pixmap pixmap, mask; | |
9f2279ad | 2610 | |
5f5c8ee5 GM |
2611 | /* Colors allocated for this image, if any. Allocated via xmalloc. */ |
2612 | unsigned long *colors; | |
2613 | int ncolors; | |
9f2279ad | 2614 | |
0ff7c0d4 MB |
2615 | /* A single `background color' for this image, for the use of anyone that |
2616 | cares about such a thing. Only valid if the `background_valid' field | |
2617 | is true. This should generally be accessed by calling the accessor | |
2618 | macro `IMAGE_BACKGROUND', which will heuristically calculate a value | |
2619 | if necessary. */ | |
2620 | unsigned long background; | |
2621 | ||
f6b54648 YM |
2622 | /* Foreground and background colors of the frame on which the image |
2623 | is created. */ | |
2624 | unsigned long frame_foreground, frame_background; | |
2625 | ||
0ff7c0d4 MB |
2626 | /* True if this image has a `transparent' background -- that is, is |
2627 | uses an image mask. The accessor macro for this is | |
2628 | `IMAGE_BACKGROUND_TRANSPARENT'. */ | |
2629 | unsigned background_transparent : 1; | |
2630 | ||
2631 | /* True if the `background' and `background_transparent' fields are | |
2632 | valid, respectively. */ | |
2633 | unsigned background_valid : 1, background_transparent_valid : 1; | |
2634 | ||
5f5c8ee5 GM |
2635 | /* Width and height of the image. */ |
2636 | int width, height; | |
87485d6f | 2637 | |
5f5c8ee5 GM |
2638 | /* These values are used for the rectangles displayed for images |
2639 | that can't be loaded. */ | |
2640 | #define DEFAULT_IMAGE_WIDTH 30 | |
2641 | #define DEFAULT_IMAGE_HEIGHT 30 | |
9f2279ad | 2642 | |
7b48cc13 KS |
2643 | /* Top/left and bottom/right corner pixel of actual image data. |
2644 | Used by four_corners_best to consider the real image data, | |
2645 | rather than looking at the optional image margin. */ | |
2646 | int corners[4]; | |
2647 | #define TOP_CORNER 0 | |
2648 | #define LEFT_CORNER 1 | |
2649 | #define BOT_CORNER 2 | |
2650 | #define RIGHT_CORNER 3 | |
2651 | ||
bdda7eb0 | 2652 | /* Percent of image height used as ascent. A value of |
54bff0bd | 2653 | CENTERED_IMAGE_ASCENT means draw the image centered on the |
bdda7eb0 | 2654 | line. */ |
5f5c8ee5 GM |
2655 | int ascent; |
2656 | #define DEFAULT_IMAGE_ASCENT 50 | |
bdda7eb0 | 2657 | #define CENTERED_IMAGE_ASCENT -1 |
c22ca93b | 2658 | |
5f5c8ee5 GM |
2659 | /* Lisp specification of this image. */ |
2660 | Lisp_Object spec; | |
c22ca93b | 2661 | |
a2bc5bdd SM |
2662 | /* List of "references" followed to build the image. |
2663 | Typically will just contain the name of the image file. | |
2664 | Used to allow fine-grained cache flushing. */ | |
2665 | Lisp_Object dependencies; | |
2666 | ||
5f5c8ee5 GM |
2667 | /* Relief to draw around the image. */ |
2668 | int relief; | |
c22ca93b | 2669 | |
f8215993 GM |
2670 | /* Optional margins around the image. This includes the relief. */ |
2671 | int hmargin, vmargin; | |
5f5c8ee5 GM |
2672 | |
2673 | /* Reference to the type of the image. */ | |
2674 | struct image_type *type; | |
2675 | ||
a7ac64a9 GM |
2676 | /* 1 means that loading the image failed. Don't try again. */ |
2677 | unsigned load_failed_p; | |
2678 | ||
5f5c8ee5 GM |
2679 | /* A place for image types to store additional data. The member |
2680 | data.lisp_val is marked during GC, so it's safe to store Lisp data | |
2681 | there. Image types should free this data when their `free' | |
2682 | function is called. */ | |
2683 | struct | |
c22ca93b | 2684 | { |
5f5c8ee5 GM |
2685 | int int_val; |
2686 | void *ptr_val; | |
2687 | Lisp_Object lisp_val; | |
2688 | } data; | |
c22ca93b | 2689 | |
5f5c8ee5 GM |
2690 | /* Hash value of image specification to speed up comparisons. */ |
2691 | unsigned hash; | |
2692 | ||
2693 | /* Image id of this image. */ | |
2694 | int id; | |
2695 | ||
2696 | /* Hash collision chain. */ | |
2697 | struct image *next, *prev; | |
2698 | }; | |
2699 | ||
2700 | ||
2701 | /* Cache of images. Each frame has a cache. X frames with the same | |
2702 | x_display_info share their caches. */ | |
2703 | ||
2704 | struct image_cache | |
2705 | { | |
2706 | /* Hash table of images. */ | |
2707 | struct image **buckets; | |
2708 | ||
2709 | /* Vector mapping image ids to images. */ | |
2710 | struct image **images; | |
2711 | ||
2712 | /* Allocated size of `images'. */ | |
2713 | unsigned size; | |
2714 | ||
2715 | /* Number of images in the cache. */ | |
2716 | unsigned used; | |
2717 | ||
2718 | /* Reference count (number of frames sharing this cache). */ | |
2719 | int refcount; | |
2720 | }; | |
2721 | ||
2722 | ||
5f5c8ee5 GM |
2723 | /* Value is a pointer to the image with id ID on frame F, or null if |
2724 | no image with that id exists. */ | |
2725 | ||
2726 | #define IMAGE_FROM_ID(F, ID) \ | |
354884c4 SM |
2727 | (((ID) >= 0 && (ID) < (FRAME_IMAGE_CACHE (F)->used)) \ |
2728 | ? FRAME_IMAGE_CACHE (F)->images[ID] \ | |
5f5c8ee5 GM |
2729 | : NULL) |
2730 | ||
2731 | /* Size of bucket vector of image caches. Should be prime. */ | |
2732 | ||
2733 | #define IMAGE_CACHE_BUCKETS_SIZE 1001 | |
2734 | ||
4397e334 | 2735 | #endif /* HAVE_WINDOW_SYSTEM */ |
5f5c8ee5 GM |
2736 | |
2737 | ||
2738 | \f | |
2739 | /*********************************************************************** | |
9ea173e8 | 2740 | Tool-bars |
5f5c8ee5 GM |
2741 | ***********************************************************************/ |
2742 | ||
9ea173e8 GM |
2743 | /* Enumeration defining where to find tool-bar item information in |
2744 | tool-bar items vectors stored with frames. Each tool-bar item | |
2745 | occupies TOOL_BAR_ITEM_NSLOTS elements in such a vector. */ | |
5f5c8ee5 | 2746 | |
9ea173e8 | 2747 | enum tool_bar_item_idx |
5f5c8ee5 | 2748 | { |
9ea173e8 | 2749 | /* The key of the tool-bar item. Used to remove items when a binding |
5f5c8ee5 | 2750 | for `undefined' is found. */ |
9ea173e8 | 2751 | TOOL_BAR_ITEM_KEY, |
5f5c8ee5 GM |
2752 | |
2753 | /* Non-nil if item is enabled. */ | |
9ea173e8 | 2754 | TOOL_BAR_ITEM_ENABLED_P, |
5f5c8ee5 GM |
2755 | |
2756 | /* Non-nil if item is selected (pressed). */ | |
9ea173e8 | 2757 | TOOL_BAR_ITEM_SELECTED_P, |
5f5c8ee5 GM |
2758 | |
2759 | /* Caption. */ | |
9ea173e8 | 2760 | TOOL_BAR_ITEM_CAPTION, |
5f5c8ee5 GM |
2761 | |
2762 | /* Image(s) to display. This is either a single image specification | |
2763 | or a vector of specifications. */ | |
9ea173e8 | 2764 | TOOL_BAR_ITEM_IMAGES, |
5f5c8ee5 GM |
2765 | |
2766 | /* The binding. */ | |
9ea173e8 | 2767 | TOOL_BAR_ITEM_BINDING, |
5f5c8ee5 GM |
2768 | |
2769 | /* Button type. One of nil, `:radio' or `:toggle'. */ | |
9ea173e8 | 2770 | TOOL_BAR_ITEM_TYPE, |
c22ca93b | 2771 | |
5f5c8ee5 | 2772 | /* Help string. */ |
9ea173e8 | 2773 | TOOL_BAR_ITEM_HELP, |
5f5c8ee5 | 2774 | |
fface677 JD |
2775 | /* Icon file name of right to left image when an RTL locale is used. */ |
2776 | TOOL_BAR_ITEM_RTL_IMAGE, | |
2777 | ||
9ea173e8 GM |
2778 | /* Sentinel = number of slots in tool_bar_items occupied by one |
2779 | tool-bar item. */ | |
2780 | TOOL_BAR_ITEM_NSLOTS | |
5f5c8ee5 GM |
2781 | }; |
2782 | ||
2783 | ||
2784 | /* An enumeration for the different images that can be specified | |
9ea173e8 | 2785 | for a tool-bar item. */ |
5f5c8ee5 | 2786 | |
9ea173e8 | 2787 | enum tool_bar_item_image |
5f5c8ee5 | 2788 | { |
9ea173e8 GM |
2789 | TOOL_BAR_IMAGE_ENABLED_SELECTED, |
2790 | TOOL_BAR_IMAGE_ENABLED_DESELECTED, | |
2791 | TOOL_BAR_IMAGE_DISABLED_SELECTED, | |
2792 | TOOL_BAR_IMAGE_DISABLED_DESELECTED | |
5f5c8ee5 GM |
2793 | }; |
2794 | ||
9ea173e8 | 2795 | /* Margin around tool-bar buttons in pixels. */ |
5f5c8ee5 | 2796 | |
cc4cb755 | 2797 | extern Lisp_Object Vtool_bar_button_margin; |
5f5c8ee5 | 2798 | |
9ea173e8 | 2799 | /* Thickness of relief to draw around tool-bar buttons. */ |
5f5c8ee5 | 2800 | |
31ade731 | 2801 | extern EMACS_INT tool_bar_button_relief; |
5f5c8ee5 | 2802 | |
cc4cb755 GM |
2803 | /* Default values of the above variables. */ |
2804 | ||
cfa5cf43 PJ |
2805 | #define DEFAULT_TOOL_BAR_BUTTON_MARGIN 4 |
2806 | #define DEFAULT_TOOL_BAR_BUTTON_RELIEF 1 | |
cc4cb755 GM |
2807 | |
2808 | /* The height in pixels of the default tool-bar images. */ | |
2809 | ||
2810 | #define DEFAULT_TOOL_BAR_IMAGE_HEIGHT 24 | |
5f5c8ee5 GM |
2811 | |
2812 | \f | |
2813 | /*********************************************************************** | |
a0816661 MB |
2814 | Terminal Capabilities |
2815 | ***********************************************************************/ | |
2816 | ||
8da139bc MB |
2817 | /* Each of these is a bit representing a terminal `capability' (bold, |
2818 | inverse, etc). They are or'd together to specify the set of | |
2819 | capabilities being queried for when calling `tty_capable_p' (which | |
2820 | returns true if the terminal supports all of them). */ | |
f0be5454 | 2821 | |
a0816661 MB |
2822 | #define TTY_CAP_INVERSE 0x01 |
2823 | #define TTY_CAP_UNDERLINE 0x02 | |
2824 | #define TTY_CAP_BOLD 0x04 | |
2825 | #define TTY_CAP_DIM 0x08 | |
2826 | #define TTY_CAP_BLINK 0x10 | |
2827 | #define TTY_CAP_ALT_CHARSET 0x20 | |
2828 | ||
2829 | \f | |
2830 | /*********************************************************************** | |
2831 | Function Prototypes | |
5f5c8ee5 GM |
2832 | ***********************************************************************/ |
2833 | ||
b7b65b15 EZ |
2834 | /* Defined in bidi.c */ |
2835 | ||
6bff6497 | 2836 | extern void bidi_init_it P_ ((EMACS_INT, EMACS_INT, struct bidi_it *)); |
89d3374a EZ |
2837 | extern void bidi_get_next_char_visually P_ ((struct bidi_it *)); |
2838 | extern void bidi_paragraph_init P_ ((bidi_dir_t, struct bidi_it *)); | |
e342a24d | 2839 | extern int bidi_mirror_char P_ ((int)); |
b7b65b15 | 2840 | |
5f5c8ee5 GM |
2841 | /* Defined in xdisp.c */ |
2842 | ||
65ace4c2 GM |
2843 | struct glyph_row *row_containing_pos P_ ((struct window *, int, |
2844 | struct glyph_row *, | |
229151ba | 2845 | struct glyph_row *, int)); |
c143c213 EZ |
2846 | EMACS_INT string_buffer_position P_ ((struct window *, Lisp_Object, |
2847 | EMACS_INT)); | |
5be57d49 | 2848 | int line_bottom_y P_ ((struct it *)); |
ce0b6717 | 2849 | int display_prop_intangible_p P_ ((Lisp_Object)); |
af42d485 | 2850 | void resize_echo_area_exactly P_ ((void)); |
c99f6080 | 2851 | int resize_mini_window P_ ((struct window *, int)); |
92489bdd | 2852 | int try_window P_ ((Lisp_Object, struct text_pos, int)); |
5f5c8ee5 GM |
2853 | void window_box P_ ((struct window *, int, int *, int *, int *, int *)); |
2854 | int window_box_height P_ ((struct window *)); | |
2855 | int window_text_bottom_y P_ ((struct window *)); | |
2856 | int window_box_width P_ ((struct window *, int)); | |
2857 | int window_box_left P_ ((struct window *, int)); | |
6b61353c | 2858 | int window_box_left_offset P_ ((struct window *, int)); |
5f5c8ee5 | 2859 | int window_box_right P_ ((struct window *, int)); |
6b61353c | 2860 | int window_box_right_offset P_ ((struct window *, int)); |
5f5c8ee5 | 2861 | void window_box_edges P_ ((struct window *, int, int *, int *, int *, int *)); |
d74b2553 | 2862 | int estimate_mode_line_height P_ ((struct frame *, enum face_id)); |
1853f74c KS |
2863 | void pixel_to_glyph_coords P_ ((struct frame *, int, int, int *, int *, |
2864 | NativeRectangle *, int)); | |
2865 | int glyph_to_pixel_coords P_ ((struct window *, int, int, int *, int *)); | |
d7f18f68 KS |
2866 | void remember_mouse_glyph P_ ((struct frame *, int, int, NativeRectangle *)); |
2867 | ||
5f5c8ee5 | 2868 | void mark_window_display_accurate P_ ((Lisp_Object, int)); |
69d1478a | 2869 | void redisplay_preserve_echo_area P_ ((int)); |
c558b5be KS |
2870 | int set_cursor_from_row P_ ((struct window *, struct glyph_row *, |
2871 | struct glyph_matrix *, int, int, int, int)); | |
5f5c8ee5 GM |
2872 | void init_iterator P_ ((struct it *, struct window *, int, |
2873 | int, struct glyph_row *, enum face_id)); | |
2874 | void init_iterator_to_row_start P_ ((struct it *, struct window *, | |
2875 | struct glyph_row *)); | |
2876 | int get_next_display_element P_ ((struct it *)); | |
d8300a8a | 2877 | void set_iterator_to_next P_ ((struct it *, int)); |
5f5c8ee5 GM |
2878 | void start_display P_ ((struct it *, struct window *, struct text_pos)); |
2879 | void move_it_to P_ ((struct it *, int, int, int, int, int)); | |
2880 | void move_it_vertically P_ ((struct it *, int)); | |
d1d1aa9c | 2881 | void move_it_vertically_backward P_ ((struct it *, int)); |
5f5c8ee5 | 2882 | void move_it_by_lines P_ ((struct it *, int, int)); |
5b2ad813 | 2883 | void move_it_past_eol P_ ((struct it *)); |
c876b227 SM |
2884 | void move_it_in_display_line (struct it *it, |
2885 | EMACS_INT to_charpos, int to_x, | |
2886 | enum move_operation_enum op); | |
c4f2431a | 2887 | int in_display_vector_p P_ ((struct it *)); |
5f5c8ee5 GM |
2888 | int frame_mode_line_height P_ ((struct frame *)); |
2889 | void highlight_trailing_whitespace P_ ((struct frame *, struct glyph_row *)); | |
9ea173e8 | 2890 | extern Lisp_Object Qtool_bar; |
c1ff17c5 | 2891 | extern Lisp_Object Vshow_trailing_whitespace; |
5f380a5b | 2892 | extern int mode_line_in_non_selected_windows; |
5f5c8ee5 | 2893 | extern int redisplaying_p; |
9ee84299 | 2894 | extern void add_to_log P_ ((char *, Lisp_Object, Lisp_Object)); |
583dba75 | 2895 | extern int help_echo_showing_p; |
e9e32f46 | 2896 | extern int current_mode_line_height, current_header_line_height; |
d74b2553 | 2897 | extern Lisp_Object help_echo_string, help_echo_window; |
0633d52c | 2898 | extern Lisp_Object help_echo_object, previous_help_echo_string; |
d74b2553 KS |
2899 | extern int help_echo_pos; |
2900 | extern struct frame *last_mouse_frame; | |
2901 | extern int last_tool_bar_item; | |
92b23323 | 2902 | extern Lisp_Object Vmouse_autoselect_window; |
502b3128 | 2903 | extern int unibyte_display_via_language_environment; |
2a3bd2e1 | 2904 | extern EMACS_INT underline_minimum_offset; |
502b3128 | 2905 | |
a7416ec1 | 2906 | extern void reseat_at_previous_visible_line_start P_ ((struct it *)); |
d74b2553 | 2907 | |
6b61353c | 2908 | extern int calc_pixel_width_or_height P_ ((double *, struct it *, Lisp_Object, |
93cf902a | 2909 | struct font *, int, int *)); |
6b61353c | 2910 | |
d74b2553 | 2911 | #ifdef HAVE_WINDOW_SYSTEM |
5f5c8ee5 | 2912 | |
d5cc60b8 KS |
2913 | #if GLYPH_DEBUG |
2914 | extern void dump_glyph_string P_ ((struct glyph_string *)); | |
2915 | #endif | |
2916 | ||
2917 | extern void x_get_glyph_overhangs P_ ((struct glyph *, struct frame *, | |
2918 | int *, int *)); | |
2919 | extern void x_produce_glyphs P_ ((struct it *)); | |
d5cc60b8 | 2920 | |
d74b2553 KS |
2921 | extern void x_write_glyphs P_ ((struct glyph *, int)); |
2922 | extern void x_insert_glyphs P_ ((struct glyph *, int len)); | |
2923 | extern void x_clear_end_of_line P_ ((int)); | |
2924 | ||
2925 | extern int x_stretch_cursor_p; | |
2926 | extern struct cursor_pos output_cursor; | |
2927 | ||
2928 | extern void x_fix_overlapping_area P_ ((struct window *, struct glyph_row *, | |
10a07952 | 2929 | enum glyph_row_area, int)); |
d74b2553 KS |
2930 | extern void draw_phys_cursor_glyph P_ ((struct window *, |
2931 | struct glyph_row *, | |
2932 | enum draw_glyphs_face)); | |
11d2f3e7 KS |
2933 | extern void get_phys_cursor_geometry P_ ((struct window *, struct glyph_row *, |
2934 | struct glyph *, int *, int *, int *)); | |
d74b2553 KS |
2935 | extern void erase_phys_cursor P_ ((struct window *)); |
2936 | extern void display_and_set_cursor P_ ((struct window *, | |
2937 | int, int, int, int, int)); | |
2938 | ||
2939 | extern void set_output_cursor P_ ((struct cursor_pos *)); | |
2940 | extern void x_cursor_to P_ ((int, int, int, int)); | |
2941 | ||
2942 | extern void x_update_cursor P_ ((struct frame *, int)); | |
2943 | extern void x_clear_cursor P_ ((struct window *)); | |
2944 | extern void x_draw_vertical_border P_ ((struct window *w)); | |
2945 | ||
2946 | extern void frame_to_window_pixel_xy P_ ((struct window *, int *, int *)); | |
10a07952 YM |
2947 | extern int get_glyph_string_clip_rects P_ ((struct glyph_string *, |
2948 | NativeRectangle *, int)); | |
d74b2553 KS |
2949 | extern void get_glyph_string_clip_rect P_ ((struct glyph_string *, |
2950 | NativeRectangle *nr)); | |
6b61353c | 2951 | extern Lisp_Object find_hot_spot P_ ((Lisp_Object, int, int)); |
d74b2553 KS |
2952 | extern void note_mouse_highlight P_ ((struct frame *, int, int)); |
2953 | extern void x_clear_window_mouse_face P_ ((struct window *)); | |
2954 | extern void cancel_mouse_face P_ ((struct frame *)); | |
2955 | ||
2956 | extern void handle_tool_bar_click P_ ((struct frame *, | |
2957 | int, int, int, unsigned int)); | |
2958 | ||
2959 | /* msdos.c defines its own versions of these functions. */ | |
2960 | extern int clear_mouse_face P_ ((Display_Info *)); | |
2961 | extern void show_mouse_face P_ ((Display_Info *, enum draw_glyphs_face)); | |
2962 | extern int cursor_in_mouse_face_p P_ ((struct window *w)); | |
2963 | ||
2964 | extern void expose_frame P_ ((struct frame *, int, int, int, int)); | |
2965 | extern int x_intersect_rectangles P_ ((XRectangle *, XRectangle *, | |
2966 | XRectangle *)); | |
2967 | #endif | |
d5cc60b8 | 2968 | |
6b61353c KH |
2969 | /* Defined in fringe.c */ |
2970 | ||
e72d7335 | 2971 | int lookup_fringe_bitmap (Lisp_Object); |
6b61353c KH |
2972 | void draw_fringe_bitmap P_ ((struct window *, struct glyph_row *, int)); |
2973 | void draw_row_fringe_bitmaps P_ ((struct window *, struct glyph_row *)); | |
98c95e4e | 2974 | int draw_window_fringes P_ ((struct window *, int)); |
6b61353c KH |
2975 | int update_window_fringes P_ ((struct window *, int)); |
2976 | void compute_fringe_widths P_ ((struct frame *, int)); | |
2977 | ||
8a8ce986 | 2978 | #ifdef WINDOWSNT |
2a29c3c1 | 2979 | void w32_init_fringe P_ ((struct redisplay_interface *)); |
6b61353c KH |
2980 | void w32_reset_fringes P_ ((void)); |
2981 | #endif | |
6b61353c KH |
2982 | /* Defined in image.c */ |
2983 | ||
2984 | #ifdef HAVE_WINDOW_SYSTEM | |
2985 | ||
2986 | extern int x_bitmap_height P_ ((struct frame *, int)); | |
2987 | extern int x_bitmap_width P_ ((struct frame *, int)); | |
2988 | extern int x_bitmap_pixmap P_ ((struct frame *, int)); | |
2989 | extern void x_reference_bitmap P_ ((struct frame *, int)); | |
2990 | extern int x_create_bitmap_from_data P_ ((struct frame *, char *, | |
2991 | unsigned int, unsigned int)); | |
2992 | extern int x_create_bitmap_from_file P_ ((struct frame *, Lisp_Object)); | |
516c741d SM |
2993 | #if defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) |
2994 | extern int x_create_bitmap_from_xpm_data P_ ((struct frame *f, char **bits)); | |
2995 | #endif | |
6b61353c KH |
2996 | #ifndef x_destroy_bitmap |
2997 | extern void x_destroy_bitmap P_ ((struct frame *, int)); | |
2998 | #endif | |
2999 | extern void x_destroy_all_bitmaps P_ ((Display_Info *)); | |
3000 | extern int x_create_bitmap_mask P_ ((struct frame * , int)); | |
3001 | extern Lisp_Object x_find_image_file P_ ((Lisp_Object)); | |
3002 | ||
3003 | void x_kill_gs_process P_ ((Pixmap, struct frame *)); | |
3004 | struct image_cache *make_image_cache P_ ((void)); | |
3005 | void free_image_cache P_ ((struct frame *)); | |
a2bc5bdd | 3006 | void clear_image_caches P_ ((Lisp_Object)); |
354884c4 | 3007 | void mark_image_cache P_ ((struct image_cache *)); |
6b61353c KH |
3008 | int valid_image_p P_ ((Lisp_Object)); |
3009 | void prepare_image_for_display P_ ((struct frame *, struct image *)); | |
3010 | int lookup_image P_ ((struct frame *, Lisp_Object)); | |
3011 | ||
3012 | unsigned long image_background P_ ((struct image *, struct frame *, | |
3013 | XImagePtr_or_DC ximg)); | |
3014 | int image_background_transparent P_ ((struct image *, struct frame *, | |
3015 | XImagePtr_or_DC mask)); | |
3016 | ||
0633d52c KS |
3017 | int image_ascent P_ ((struct image *, struct face *, struct glyph_slice *)); |
3018 | ||
6b61353c KH |
3019 | #endif |
3020 | ||
5f5c8ee5 GM |
3021 | /* Defined in sysdep.c */ |
3022 | ||
16c290d8 | 3023 | void get_tty_size P_ ((int, int *, int *)); |
5f5c8ee5 GM |
3024 | void request_sigio P_ ((void)); |
3025 | void unrequest_sigio P_ ((void)); | |
16c290d8 KL |
3026 | int tabs_safe_p P_ ((int)); |
3027 | void init_baud_rate P_ ((int)); | |
5f5c8ee5 GM |
3028 | void init_sigio P_ ((int)); |
3029 | ||
8317e104 GM |
3030 | /* Defined in xfaces.c */ |
3031 | ||
2ad412d7 GM |
3032 | #ifdef HAVE_X_WINDOWS |
3033 | void x_free_colors P_ ((struct frame *, unsigned long *, int)); | |
3034 | #endif | |
5f5c8ee5 | 3035 | |
76a6bc49 GM |
3036 | void update_face_from_frame_parameter P_ ((struct frame *, Lisp_Object, |
3037 | Lisp_Object)); | |
036480cb | 3038 | Lisp_Object tty_color_name P_ ((struct frame *, int)); |
5f5c8ee5 | 3039 | void clear_face_cache P_ ((int)); |
1cc03123 EZ |
3040 | unsigned long load_color P_ ((struct frame *, struct face *, Lisp_Object, |
3041 | enum lface_attribute_index)); | |
5f5c8ee5 | 3042 | void unload_color P_ ((struct frame *, unsigned long)); |
8f924df7 KH |
3043 | char *choose_face_font P_ ((struct frame *, Lisp_Object *, Lisp_Object, |
3044 | int *)); | |
5f5c8ee5 GM |
3045 | int ascii_face_of_lisp_face P_ ((struct frame *, int)); |
3046 | void prepare_face_for_display P_ ((struct frame *, struct face *)); | |
05131107 | 3047 | int xstrcasecmp P_ ((const unsigned char *, const unsigned char *)); |
da78062b | 3048 | int lookup_face P_ ((struct frame *, Lisp_Object *)); |
000fc2b1 | 3049 | int lookup_named_face P_ ((struct frame *, Lisp_Object, int)); |
f2cec7a9 | 3050 | int lookup_basic_face P_ ((struct frame *, int)); |
5f5c8ee5 GM |
3051 | int smaller_face P_ ((struct frame *, int, int)); |
3052 | int face_with_height P_ ((struct frame *, int, int)); | |
5c538596 | 3053 | int lookup_derived_face P_ ((struct frame *, Lisp_Object, int, int)); |
5f5c8ee5 GM |
3054 | void init_frame_faces P_ ((struct frame *)); |
3055 | void free_frame_faces P_ ((struct frame *)); | |
3056 | void recompute_basic_faces P_ ((struct frame *)); | |
0f8b27ea SM |
3057 | int face_at_buffer_position P_ ((struct window *w, EMACS_INT pos, |
3058 | EMACS_INT region_beg, EMACS_INT region_end, | |
3059 | EMACS_INT *endptr, EMACS_INT limit, | |
6970f632 | 3060 | int mouse, int base_face_id)); |
0f8b27ea SM |
3061 | int face_for_overlay_string P_ ((struct window *w, EMACS_INT pos, |
3062 | EMACS_INT region_beg, EMACS_INT region_end, | |
3063 | EMACS_INT *endptr, EMACS_INT limit, | |
3064 | int mouse, Lisp_Object overlay)); | |
3065 | int face_at_string_position P_ ((struct window *w, Lisp_Object string, | |
3066 | EMACS_INT pos, EMACS_INT bufpos, | |
3067 | EMACS_INT region_beg, EMACS_INT region_end, | |
3068 | EMACS_INT *endptr, enum face_id, int mouse)); | |
a2858aae | 3069 | int merge_faces P_ ((struct frame *, Lisp_Object, int, int)); |
5f5c8ee5 GM |
3070 | int compute_char_face P_ ((struct frame *, int, Lisp_Object)); |
3071 | void free_all_realized_faces P_ ((Lisp_Object)); | |
9cb01f03 | 3072 | void free_realized_face P_ ((struct frame *, struct face *)); |
5f5c8ee5 | 3073 | extern Lisp_Object Qforeground_color, Qbackground_color; |
9b0ad2cb | 3074 | extern Lisp_Object Qframe_set_background_mode; |
f0ba2d22 | 3075 | extern char unspecified_fg[], unspecified_bg[]; |
5f5c8ee5 | 3076 | |
f2cec7a9 MB |
3077 | extern Lisp_Object Vface_remapping_alist; |
3078 | ||
5f5c8ee5 GM |
3079 | /* Defined in xfns.c */ |
3080 | ||
4397e334 | 3081 | #ifdef HAVE_X_WINDOWS |
5ae040a6 | 3082 | void gamma_correct P_ ((struct frame *, XColor *)); |
4397e334 AI |
3083 | #endif |
3084 | #ifdef WINDOWSNT | |
3085 | void gamma_correct P_ ((struct frame *, COLORREF *)); | |
3086 | #endif | |
3087 | ||
3088 | #ifdef HAVE_WINDOW_SYSTEM | |
3089 | ||
5f5c8ee5 GM |
3090 | int x_screen_planes P_ ((struct frame *)); |
3091 | void x_implicitly_set_name P_ ((struct frame *, Lisp_Object, Lisp_Object)); | |
c26e3f6c | 3092 | |
4811586b | 3093 | extern Lisp_Object tip_frame; |
5f5c8ee5 | 3094 | extern Window tip_window; |
88a19a90 | 3095 | EXFUN (Fx_show_tip, 6); |
5f5c8ee5 | 3096 | EXFUN (Fx_hide_tip, 0); |
6a2b7977 GM |
3097 | extern void start_hourglass P_ ((void)); |
3098 | extern void cancel_hourglass P_ ((void)); | |
3b8029d7 | 3099 | extern int hourglass_started P_ ((void)); |
6a2b7977 | 3100 | extern int display_hourglass_p; |
1885ab29 AR |
3101 | extern int hourglass_shown_p; |
3102 | struct atimer; /* Defined in atimer.h. */ | |
3103 | /* If non-null, an asynchronous timer that, when it expires, displays | |
3104 | an hourglass cursor on all frames. */ | |
3105 | extern struct atimer *hourglass_atimer; | |
3106 | ||
6fb5f7da | 3107 | /* Each GUI implements these. FIXME: move into RIF. */ |
1885ab29 AR |
3108 | extern void show_hourglass P_ ((struct atimer *)); |
3109 | extern void hide_hourglass P_ ((void)); | |
5f5c8ee5 | 3110 | |
0ff7c0d4 MB |
3111 | /* Returns the background color of IMG, calculating one heuristically if |
3112 | necessary. If non-zero, XIMG is an existing XImage object to use for | |
3113 | the heuristic. */ | |
3114 | ||
3115 | #define IMAGE_BACKGROUND(img, f, ximg) \ | |
3116 | ((img)->background_valid \ | |
3117 | ? (img)->background \ | |
3118 | : image_background (img, f, ximg)) | |
3119 | ||
3120 | /* Returns true if IMG has a `transparent' background, using heuristics | |
3121 | to decide if necessary. If non-zero, MASK is an existing XImage | |
3122 | object to use for the heuristic. */ | |
3123 | ||
3124 | #define IMAGE_BACKGROUND_TRANSPARENT(img, f, mask) \ | |
3125 | ((img)->background_transparent_valid \ | |
3126 | ? (img)->background_transparent \ | |
3127 | : image_background_transparent (img, f, mask)) | |
3128 | ||
4397e334 | 3129 | #endif /* HAVE_WINDOW_SYSTEM */ |
5f5c8ee5 GM |
3130 | |
3131 | ||
3132 | /* Defined in xmenu.c */ | |
3133 | ||
3134 | int popup_activated P_ ((void)); | |
3135 | ||
3f7267e7 | 3136 | /* Defined in dispnew.c */ |
5f5c8ee5 | 3137 | |
283c6e3e | 3138 | extern int inverse_video; |
9a636f37 GM |
3139 | extern int required_matrix_width P_ ((struct window *)); |
3140 | extern int required_matrix_height P_ ((struct window *)); | |
6b61353c KH |
3141 | extern Lisp_Object buffer_posn_from_coords P_ ((struct window *, |
3142 | int *, int *, | |
3143 | struct display_pos *, | |
0633d52c | 3144 | Lisp_Object *, |
6b61353c KH |
3145 | int *, int *, int *, int *)); |
3146 | extern Lisp_Object mode_line_string P_ ((struct window *, enum window_part, | |
3147 | int *, int *, int *, | |
3148 | Lisp_Object *, | |
3149 | int *, int *, int *, int *)); | |
3150 | extern Lisp_Object marginal_area_string P_ ((struct window *, enum window_part, | |
3151 | int *, int *, int *, | |
3152 | Lisp_Object *, | |
3153 | int *, int *, int *, int *)); | |
ec5d8db7 AS |
3154 | extern void redraw_frame P_ ((struct frame *)); |
3155 | extern void redraw_garbaged_frames P_ ((void)); | |
ec5d8db7 | 3156 | extern void cancel_line P_ ((int, struct frame *)); |
ec5d8db7 | 3157 | extern void init_desired_glyphs P_ ((struct frame *)); |
ec5d8db7 | 3158 | extern int scroll_frame_lines P_ ((struct frame *, int, int, int, int)); |
ec5d8db7 AS |
3159 | extern int direct_output_for_insert P_ ((int)); |
3160 | extern int direct_output_forward_char P_ ((int)); | |
3161 | extern int update_frame P_ ((struct frame *, int, int)); | |
ec5d8db7 | 3162 | extern int scrolling P_ ((struct frame *)); |
ec5d8db7 | 3163 | extern void bitch_at_user P_ ((void)); |
5f5c8ee5 GM |
3164 | void adjust_glyphs P_ ((struct frame *)); |
3165 | void free_glyphs P_ ((struct frame *)); | |
3166 | void free_window_matrices P_ ((struct window *)); | |
3167 | void check_glyph_memory P_ ((void)); | |
3168 | void mirrored_line_dance P_ ((struct glyph_matrix *, int, int, int *, char *)); | |
3169 | void clear_glyph_matrix P_ ((struct glyph_matrix *)); | |
3170 | void clear_current_matrices P_ ((struct frame *f)); | |
3171 | void clear_desired_matrices P_ ((struct frame *)); | |
3172 | void shift_glyph_matrix P_ ((struct window *, struct glyph_matrix *, | |
3173 | int, int, int)); | |
3174 | void rotate_matrix P_ ((struct glyph_matrix *, int, int, int)); | |
84fc6d4d GM |
3175 | void increment_matrix_positions P_ ((struct glyph_matrix *, |
3176 | int, int, int, int)); | |
5f5c8ee5 | 3177 | void blank_row P_ ((struct window *, struct glyph_row *, int)); |
84fc6d4d | 3178 | void increment_row_positions P_ ((struct glyph_row *, int, int)); |
5f5c8ee5 GM |
3179 | void enable_glyph_matrix_rows P_ ((struct glyph_matrix *, int, int, int)); |
3180 | void clear_glyph_row P_ ((struct glyph_row *)); | |
3181 | void prepare_desired_row P_ ((struct glyph_row *)); | |
3182 | int line_hash_code P_ ((struct glyph_row *)); | |
3183 | void set_window_update_flags P_ ((struct window *, int)); | |
5f5c8ee5 GM |
3184 | void redraw_frame P_ ((struct frame *)); |
3185 | void redraw_garbaged_frames P_ ((void)); | |
3186 | int scroll_cost P_ ((struct frame *, int, int, int)); | |
3187 | int direct_output_for_insert P_ ((int)); | |
3188 | int direct_output_forward_char P_ ((int)); | |
3189 | int update_frame P_ ((struct frame *, int, int)); | |
3190 | void update_single_window P_ ((struct window *, int)); | |
3191 | int scrolling P_ ((struct frame *)); | |
3f7267e7 GM |
3192 | void do_pending_window_change P_ ((int)); |
3193 | void change_frame_size P_ ((struct frame *, int, int, int, int, int)); | |
5f5c8ee5 | 3194 | void bitch_at_user P_ ((void)); |
5f5c8ee5 GM |
3195 | void init_display P_ ((void)); |
3196 | void syms_of_display P_ ((void)); | |
69a7a14d | 3197 | extern Lisp_Object Qredisplay_dont_pause; |
652df850 | 3198 | void spec_glyph_lookup_face P_ ((struct window *, GLYPH *)); |
ec5d8db7 | 3199 | |
ed8dad6b | 3200 | /* Defined in terminal.c */ |
5f5c8ee5 | 3201 | |
385ed61f | 3202 | extern void ring_bell P_ ((struct frame *)); |
ec5d8db7 AS |
3203 | extern void update_begin P_ ((struct frame *)); |
3204 | extern void update_end P_ ((struct frame *)); | |
385ed61f | 3205 | extern void set_terminal_window P_ ((struct frame *, int)); |
ed8dad6b | 3206 | extern void cursor_to P_ ((struct frame *, int, int)); |
ed8dad6b KL |
3207 | extern void raw_cursor_to P_ ((struct frame *, int, int)); |
3208 | extern void clear_to_end P_ ((struct frame *)); | |
385ed61f KL |
3209 | extern void clear_frame P_ ((struct frame *)); |
3210 | extern void clear_end_of_line P_ ((struct frame *, int)); | |
ed8dad6b KL |
3211 | extern void write_glyphs P_ ((struct frame *, struct glyph *, int)); |
3212 | extern void insert_glyphs P_ ((struct frame *, struct glyph *, int)); | |
385ed61f KL |
3213 | extern void delete_glyphs P_ ((struct frame *, int)); |
3214 | extern void ins_del_lines P_ ((struct frame *, int, int)); | |
ed8dad6b | 3215 | |
6ed8eeff | 3216 | extern struct terminal *init_initial_terminal P_ ((void)); |
ed8dad6b KL |
3217 | |
3218 | ||
3219 | /* Defined in term.c */ | |
3220 | ||
6ed8eeff KL |
3221 | extern void tty_set_terminal_modes P_ ((struct terminal *)); |
3222 | extern void tty_reset_terminal_modes P_ ((struct terminal *)); | |
ed8dad6b KL |
3223 | extern void tty_turn_off_insert P_ ((struct tty_display_info *)); |
3224 | extern void tty_turn_off_highlight P_ ((struct tty_display_info *)); | |
ec5d8db7 AS |
3225 | extern int string_cost P_ ((char *)); |
3226 | extern int per_line_cost P_ ((char *)); | |
3227 | extern void calculate_costs P_ ((struct frame *)); | |
ed8dad6b KL |
3228 | extern void produce_glyphs P_ ((struct it *)); |
3229 | extern void produce_special_glyphs P_ ((struct it *, enum display_element_type)); | |
3230 | extern int tty_capable_p P_ ((struct tty_display_info *, unsigned, unsigned long, unsigned long)); | |
9b2cd403 | 3231 | extern void set_tty_color_mode (struct tty_display_info *, struct frame *); |
717a00ef | 3232 | extern struct terminal *get_tty_terminal P_ ((Lisp_Object, int)); |
6ed8eeff KL |
3233 | extern struct terminal *get_named_tty P_ ((char *)); |
3234 | EXFUN (Ftty_type, 1); | |
b2fedb04 | 3235 | extern void create_tty_output P_ ((struct frame *)); |
6ed8eeff | 3236 | extern struct terminal *init_tty P_ ((char *, char *, int)); |
b2fedb04 | 3237 | |
ec5d8db7 AS |
3238 | |
3239 | /* Defined in scroll.c */ | |
5f5c8ee5 | 3240 | |
ec5d8db7 AS |
3241 | extern int scrolling_max_lines_saved P_ ((int, int, int *, int *, int *)); |
3242 | extern int scroll_cost P_ ((struct frame *, int, int, int)); | |
3243 | extern void do_line_insertion_deletion_costs P_ ((struct frame *, char *, | |
3244 | char *, char *, char *, | |
3245 | char *, char *, int)); | |
5f5c8ee5 GM |
3246 | void scrolling_1 P_ ((struct frame *, int, int, int, int *, int *, int *, |
3247 | int *, int)); | |
87485d6f | 3248 | |
e6b3aecd KS |
3249 | /* Defined in frame.c */ |
3250 | ||
3251 | #ifdef HAVE_WINDOW_SYSTEM | |
3252 | ||
3253 | /* Types we might convert a resource string into. */ | |
3254 | enum resource_types | |
3255 | { | |
3256 | RES_TYPE_NUMBER, | |
3257 | RES_TYPE_FLOAT, | |
3258 | RES_TYPE_BOOLEAN, | |
3259 | RES_TYPE_STRING, | |
3260 | RES_TYPE_SYMBOL | |
3261 | }; | |
3262 | ||
3263 | extern Lisp_Object x_get_arg P_ ((Display_Info *, Lisp_Object, | |
3264 | Lisp_Object, char *, char *class, | |
3265 | enum resource_types)); | |
3266 | extern Lisp_Object x_frame_get_arg P_ ((struct frame *, Lisp_Object, | |
3267 | Lisp_Object, char *, char *, | |
3268 | enum resource_types)); | |
3269 | extern Lisp_Object x_frame_get_and_record_arg P_ (( | |
3270 | struct frame *, Lisp_Object, | |
3271 | Lisp_Object, char *, char *, | |
3272 | enum resource_types)); | |
3273 | extern Lisp_Object x_default_parameter P_ ((struct frame *, Lisp_Object, | |
3274 | Lisp_Object, Lisp_Object, | |
3275 | char *, char *, | |
3276 | enum resource_types)); | |
3277 | ||
3278 | #endif /* HAVE_WINDOW_SYSTEM */ | |
3279 | ||
5f5c8ee5 | 3280 | #endif /* not DISPEXTERN_H_INCLUDED */ |
6b61353c KH |
3281 | |
3282 | /* arch-tag: c65c475f-1c1e-4534-8795-990b8509fd65 | |
3283 | (do not change this comment) */ |