Commit | Line | Data |
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6b61353c | 1 | /* Fringe handling (split from xdisp.c). |
0b5538bd | 2 | Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1997, |
429ab54e | 3 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, |
114f9c96 | 4 | 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
6b61353c KH |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
6b61353c | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
6b61353c KH |
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 | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
6b61353c KH |
20 | |
21 | #include <config.h> | |
22 | #include <stdio.h> | |
d7306fe6 | 23 | #include <setjmp.h> |
6b61353c KH |
24 | |
25 | #include "lisp.h" | |
26 | #include "frame.h" | |
27 | #include "window.h" | |
28 | #include "dispextern.h" | |
29 | #include "buffer.h" | |
30 | #include "blockinput.h" | |
e581a466 | 31 | #include "termhooks.h" |
6b61353c KH |
32 | |
33 | #ifdef HAVE_WINDOW_SYSTEM | |
34 | ||
7a2a85be | 35 | extern Lisp_Object Qfringe; |
6b61353c | 36 | extern Lisp_Object Qtop, Qbottom, Qcenter; |
5797a7a0 | 37 | extern Lisp_Object Qup, Qdown, Qleft, Qright; |
6b61353c KH |
38 | |
39 | /* Non-nil means that newline may flow into the right fringe. */ | |
40 | ||
41 | Lisp_Object Voverflow_newline_into_fringe; | |
42 | ||
7a2a85be KS |
43 | /* List of known fringe bitmap symbols. |
44 | ||
45 | The fringe bitmap number is stored in the `fringe' property on | |
46 | those symbols. Names for the built-in bitmaps are installed by | |
47 | loading fringe.el. | |
48 | */ | |
49 | ||
50 | Lisp_Object Vfringe_bitmaps; | |
6b61353c | 51 | |
7840b332 KS |
52 | /* Fringe bitmaps are represented in three different ways: |
53 | ||
54 | Logical bitmaps are used internally to denote things like | |
55 | 'end-of-buffer', 'left-truncation', 'overlay-arrow', etc. | |
56 | ||
57 | Physical bitmaps specify the visual appearence of the bitmap, | |
58 | e.g. 'bottom-left-angle', 'left-arrow', 'left-triangle', etc. | |
59 | User defined bitmaps are physical bitmaps. | |
60 | ||
61 | Internally, fringe bitmaps for a specific display row are | |
62 | represented as a simple integer that is used as an index | |
63 | into the table of all defined bitmaps. This index is stored | |
64 | in the `fringe' property of the physical bitmap symbol. | |
65 | ||
66 | Logical bitmaps are mapped to physical bitmaps through the | |
67 | buffer-local `fringe-indicator-alist' variable. | |
68 | ||
69 | Each element of this alist is a cons (LOGICAL . PHYSICAL) | |
70 | mapping a logical bitmap to a physical bitmap. | |
71 | PHYSICAL is either a symbol to use in both left and right fringe, | |
72 | or a cons of two symbols (LEFT . RIGHT) denoting different | |
73 | bitmaps to use in left and right fringe. | |
74 | ||
75 | LOGICAL is first looked up in the window's buffer's buffer-local | |
76 | value of the fringe-indicator-alist variable, and if not present, | |
77 | in the global value of fringe-indicator-alist. | |
78 | ||
79 | If LOGICAL is not present in either alist, or the PHYSICAL value | |
80 | found is nil, no bitmap is shown for the logical bitmap. | |
81 | ||
82 | The `left-fringe' and `right-fringe' display properties | |
83 | must specify physical bitmap symbols. | |
84 | */ | |
85 | ||
86 | extern Lisp_Object Qunknown; | |
87 | Lisp_Object Qtruncation, Qcontinuation, Qoverlay_arrow; | |
88 | Lisp_Object Qempty_line, Qtop_bottom; | |
89 | extern Lisp_Object Qbar, Qhbar, Qbox, Qhollow; | |
90 | Lisp_Object Qhollow_small; | |
6b61353c KH |
91 | |
92 | enum fringe_bitmap_align | |
93 | { | |
94 | ALIGN_BITMAP_CENTER = 0, | |
95 | ALIGN_BITMAP_TOP, | |
96 | ALIGN_BITMAP_BOTTOM | |
97 | }; | |
98 | ||
99 | struct fringe_bitmap | |
100 | { | |
101 | unsigned short *bits; | |
102 | unsigned height : 8; | |
103 | unsigned width : 8; | |
104 | unsigned period : 8; | |
105 | unsigned align : 2; | |
106 | unsigned dynamic : 1; | |
107 | }; | |
108 | ||
109 | \f | |
110 | /*********************************************************************** | |
111 | Fringe bitmaps | |
112 | ***********************************************************************/ | |
113 | ||
114 | /* Undefined bitmap. A question mark. */ | |
115 | /* | |
116 | ..xxxx.. | |
117 | .xxxxxx. | |
118 | xx....xx | |
119 | xx....xx | |
120 | ....xx.. | |
121 | ...xx... | |
122 | ...xx... | |
123 | ........ | |
124 | ...xx... | |
125 | ...xx... | |
126 | */ | |
7840b332 | 127 | static unsigned short question_mark_bits[] = { |
6b61353c KH |
128 | 0x3c, 0x7e, 0x7e, 0x0c, 0x18, 0x18, 0x00, 0x18, 0x18}; |
129 | ||
130 | /* An arrow like this: `<-'. */ | |
131 | /* | |
132 | ...xx... | |
133 | ..xx.... | |
134 | .xx..... | |
135 | xxxxxx.. | |
136 | xxxxxx.. | |
137 | .xx..... | |
138 | ..xx.... | |
139 | ...xx... | |
140 | */ | |
141 | static unsigned short left_arrow_bits[] = { | |
142 | 0x18, 0x30, 0x60, 0xfc, 0xfc, 0x60, 0x30, 0x18}; | |
143 | ||
144 | ||
145 | /* Right truncation arrow bitmap `->'. */ | |
146 | /* | |
147 | ...xx... | |
148 | ....xx.. | |
149 | .....xx. | |
150 | ..xxxxxx | |
151 | ..xxxxxx | |
152 | .....xx. | |
153 | ....xx.. | |
154 | ...xx... | |
155 | */ | |
156 | static unsigned short right_arrow_bits[] = { | |
157 | 0x18, 0x0c, 0x06, 0x3f, 0x3f, 0x06, 0x0c, 0x18}; | |
158 | ||
159 | ||
160 | /* Up arrow bitmap. */ | |
161 | /* | |
162 | ...xx... | |
163 | ..xxxx.. | |
164 | .xxxxxx. | |
165 | xxxxxxxx | |
166 | ...xx... | |
167 | ...xx... | |
168 | ...xx... | |
169 | ...xx... | |
170 | */ | |
171 | static unsigned short up_arrow_bits[] = { | |
172 | 0x18, 0x3c, 0x7e, 0xff, 0x18, 0x18, 0x18, 0x18}; | |
173 | ||
174 | ||
175 | /* Down arrow bitmap. */ | |
176 | /* | |
177 | ...xx... | |
178 | ...xx... | |
179 | ...xx... | |
180 | ...xx... | |
181 | xxxxxxxx | |
182 | .xxxxxx. | |
183 | ..xxxx.. | |
184 | ...xx... | |
185 | */ | |
186 | static unsigned short down_arrow_bits[] = { | |
187 | 0x18, 0x18, 0x18, 0x18, 0xff, 0x7e, 0x3c, 0x18}; | |
188 | ||
6b61353c KH |
189 | /* Marker for continuation lines. */ |
190 | /* | |
191 | ..xxxx.. | |
192 | .xxxxx.. | |
193 | xx...... | |
194 | xxx..x.. | |
195 | xxxxxx.. | |
196 | .xxxxx.. | |
197 | ..xxxx.. | |
198 | .xxxxx.. | |
199 | */ | |
7840b332 | 200 | static unsigned short left_curly_arrow_bits[] = { |
6b61353c KH |
201 | 0x3c, 0x7c, 0xc0, 0xe4, 0xfc, 0x7c, 0x3c, 0x7c}; |
202 | ||
7840b332 | 203 | /* Marker for continued lines. */ |
6b61353c | 204 | /* |
7840b332 KS |
205 | ..xxxx.. |
206 | ..xxxxx. | |
207 | ......xx | |
208 | ..x..xxx | |
209 | ..xxxxxx | |
210 | ..xxxxx. | |
211 | ..xxxx.. | |
212 | ..xxxxx. | |
6b61353c | 213 | */ |
7840b332 KS |
214 | static unsigned short right_curly_arrow_bits[] = { |
215 | 0x3c, 0x3e, 0x03, 0x27, 0x3f, 0x3e, 0x3c, 0x3e}; | |
6b61353c | 216 | |
6b61353c KH |
217 | /* Reverse Overlay arrow bitmap. A triangular arrow. */ |
218 | /* | |
219 | ......xx | |
220 | ....xxxx | |
221 | ...xxxxx | |
222 | ..xxxxxx | |
223 | ..xxxxxx | |
224 | ...xxxxx | |
225 | ....xxxx | |
226 | ......xx | |
227 | */ | |
7840b332 | 228 | static unsigned short left_triangle_bits[] = { |
6b61353c | 229 | 0x03, 0x0f, 0x1f, 0x3f, 0x3f, 0x1f, 0x0f, 0x03}; |
7840b332 KS |
230 | |
231 | /* Overlay arrow bitmap. A triangular arrow. */ | |
232 | /* | |
233 | xx...... | |
234 | xxxx.... | |
235 | xxxxx... | |
236 | xxxxxx.. | |
237 | xxxxxx.. | |
238 | xxxxx... | |
239 | xxxx.... | |
240 | xx...... | |
241 | */ | |
242 | static unsigned short right_triangle_bits[] = { | |
243 | 0xc0, 0xf0, 0xf8, 0xfc, 0xfc, 0xf8, 0xf0, 0xc0}; | |
6b61353c KH |
244 | |
245 | /* First line bitmap. An top-left angle. */ | |
246 | /* | |
247 | xxxxxx.. | |
248 | xxxxxx.. | |
249 | xx...... | |
250 | xx...... | |
251 | xx...... | |
252 | xx...... | |
253 | xx...... | |
254 | ........ | |
255 | */ | |
256 | static unsigned short top_left_angle_bits[] = { | |
257 | 0xfc, 0xfc, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0x00}; | |
258 | ||
259 | /* First line bitmap. An right-up angle. */ | |
260 | /* | |
261 | ..xxxxxx | |
262 | ..xxxxxx | |
263 | ......xx | |
264 | ......xx | |
265 | ......xx | |
266 | ......xx | |
267 | ......xx | |
268 | ........ | |
269 | */ | |
270 | static unsigned short top_right_angle_bits[] = { | |
271 | 0x3f, 0x3f, 0x03, 0x03, 0x03, 0x03, 0x03, 0x00}; | |
272 | ||
273 | /* Last line bitmap. An left-down angle. */ | |
274 | /* | |
275 | ........ | |
276 | xx...... | |
277 | xx...... | |
278 | xx...... | |
279 | xx...... | |
280 | xx...... | |
281 | xxxxxx.. | |
282 | xxxxxx.. | |
283 | */ | |
284 | static unsigned short bottom_left_angle_bits[] = { | |
285 | 0x00, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xfc, 0xfc}; | |
286 | ||
287 | /* Last line bitmap. An right-down angle. */ | |
288 | /* | |
289 | ........ | |
290 | ......xx | |
291 | ......xx | |
292 | ......xx | |
293 | ......xx | |
294 | ......xx | |
295 | ..xxxxxx | |
296 | ..xxxxxx | |
297 | */ | |
298 | static unsigned short bottom_right_angle_bits[] = { | |
299 | 0x00, 0x03, 0x03, 0x03, 0x03, 0x03, 0x3f, 0x3f}; | |
300 | ||
301 | /* First/last line bitmap. An left bracket. */ | |
302 | /* | |
303 | xxxxxx.. | |
304 | xxxxxx.. | |
305 | xx...... | |
306 | xx...... | |
307 | xx...... | |
308 | xx...... | |
309 | xx...... | |
310 | xx...... | |
311 | xxxxxx.. | |
312 | xxxxxx.. | |
313 | */ | |
314 | static unsigned short left_bracket_bits[] = { | |
315 | 0xfc, 0xfc, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xfc, 0xfc}; | |
316 | ||
317 | /* First/last line bitmap. An right bracket. */ | |
318 | /* | |
319 | ..xxxxxx | |
320 | ..xxxxxx | |
321 | ......xx | |
322 | ......xx | |
323 | ......xx | |
324 | ......xx | |
325 | ......xx | |
326 | ......xx | |
327 | ..xxxxxx | |
328 | ..xxxxxx | |
329 | */ | |
330 | static unsigned short right_bracket_bits[] = { | |
331 | 0x3f, 0x3f, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x3f, 0x3f}; | |
332 | ||
333 | /* Filled box cursor bitmap. A filled box; max 13 pixels high. */ | |
334 | /* | |
335 | xxxxxxx. | |
336 | xxxxxxx. | |
337 | xxxxxxx. | |
338 | xxxxxxx. | |
339 | xxxxxxx. | |
340 | xxxxxxx. | |
341 | xxxxxxx. | |
342 | xxxxxxx. | |
343 | xxxxxxx. | |
344 | xxxxxxx. | |
345 | xxxxxxx. | |
346 | xxxxxxx. | |
347 | xxxxxxx. | |
348 | */ | |
7840b332 | 349 | static unsigned short filled_rectangle_bits[] = { |
6b61353c KH |
350 | 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe}; |
351 | ||
352 | /* Hollow box cursor bitmap. A hollow box; max 13 pixels high. */ | |
353 | /* | |
354 | xxxxxxx. | |
355 | x.....x. | |
356 | x.....x. | |
357 | x.....x. | |
358 | x.....x. | |
359 | x.....x. | |
360 | x.....x. | |
361 | x.....x. | |
362 | x.....x. | |
363 | x.....x. | |
364 | x.....x. | |
365 | x.....x. | |
366 | xxxxxxx. | |
367 | */ | |
7840b332 | 368 | static unsigned short hollow_rectangle_bits[] = { |
6b61353c KH |
369 | 0xfe, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0xfe}; |
370 | ||
7840b332 KS |
371 | /* Hollow square bitmap. */ |
372 | /* | |
373 | .xxxxxx. | |
374 | .x....x. | |
375 | .x....x. | |
376 | .x....x. | |
377 | .x....x. | |
378 | .xxxxxx. | |
379 | */ | |
380 | static unsigned short hollow_square_bits[] = { | |
381 | 0x7e, 0x42, 0x42, 0x42, 0x42, 0x7e}; | |
382 | ||
383 | /* Filled square bitmap. */ | |
384 | /* | |
385 | .xxxxxx. | |
386 | .xxxxxx. | |
387 | .xxxxxx. | |
388 | .xxxxxx. | |
389 | .xxxxxx. | |
390 | .xxxxxx. | |
391 | */ | |
392 | static unsigned short filled_square_bits[] = { | |
393 | 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e}; | |
394 | ||
6b61353c KH |
395 | /* Bar cursor bitmap. A vertical bar; max 13 pixels high. */ |
396 | /* | |
397 | xx...... | |
398 | xx...... | |
399 | xx...... | |
400 | xx...... | |
401 | xx...... | |
402 | xx...... | |
403 | xx...... | |
404 | xx...... | |
405 | xx...... | |
406 | xx...... | |
407 | xx...... | |
408 | xx...... | |
409 | xx...... | |
410 | */ | |
7840b332 | 411 | static unsigned short vertical_bar_bits[] = { |
6b61353c KH |
412 | 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0}; |
413 | ||
68a33afa | 414 | /* HBar cursor bitmap. A horizontal bar; 2 pixels high. */ |
6b61353c KH |
415 | /* |
416 | xxxxxxx. | |
417 | xxxxxxx. | |
418 | */ | |
68a33afa | 419 | static unsigned short horizontal_bar_bits[] = { |
6b61353c KH |
420 | 0xfe, 0xfe}; |
421 | ||
422 | ||
423 | /* Bitmap drawn to indicate lines not displaying text if | |
424 | `indicate-empty-lines' is non-nil. */ | |
425 | /* | |
426 | ........ | |
427 | ..xxxx.. | |
428 | ........ | |
429 | ........ | |
430 | ..xxxx.. | |
431 | ........ | |
432 | */ | |
7840b332 | 433 | static unsigned short empty_line_bits[] = { |
6b61353c KH |
434 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, |
435 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
436 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
437 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
438 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
439 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
440 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
441 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00}; | |
442 | ||
6b61353c KH |
443 | |
444 | #define BYTES_PER_BITMAP_ROW (sizeof (unsigned short)) | |
445 | #define STANDARD_BITMAP_HEIGHT(bits) (sizeof (bits)/BYTES_PER_BITMAP_ROW) | |
446 | #define FRBITS(bits) bits, STANDARD_BITMAP_HEIGHT (bits) | |
447 | ||
7840b332 KS |
448 | /* NOTE: The order of these bitmaps must match the sequence |
449 | used in fringe.el to define the corresponding symbols. */ | |
450 | ||
451 | struct fringe_bitmap standard_bitmaps[] = | |
6b61353c KH |
452 | { |
453 | { NULL, 0, 0, 0, 0, 0 }, /* NO_FRINGE_BITMAP */ | |
7840b332 | 454 | { FRBITS (question_mark_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
6b61353c KH |
455 | { FRBITS (left_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
456 | { FRBITS (right_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
457 | { FRBITS (up_arrow_bits), 8, 0, ALIGN_BITMAP_TOP, 0 }, | |
458 | { FRBITS (down_arrow_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, | |
7840b332 KS |
459 | { FRBITS (left_curly_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
460 | { FRBITS (right_curly_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
461 | { FRBITS (left_triangle_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
462 | { FRBITS (right_triangle_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
6b61353c KH |
463 | { FRBITS (top_left_angle_bits), 8, 0, ALIGN_BITMAP_TOP, 0 }, |
464 | { FRBITS (top_right_angle_bits), 8, 0, ALIGN_BITMAP_TOP, 0 }, | |
465 | { FRBITS (bottom_left_angle_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, | |
466 | { FRBITS (bottom_right_angle_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, | |
467 | { FRBITS (left_bracket_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
468 | { FRBITS (right_bracket_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
7840b332 KS |
469 | { FRBITS (filled_rectangle_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
470 | { FRBITS (hollow_rectangle_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
471 | { FRBITS (filled_square_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
6b61353c | 472 | { FRBITS (hollow_square_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
7840b332 | 473 | { FRBITS (vertical_bar_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
68a33afa | 474 | { FRBITS (horizontal_bar_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, |
7840b332 | 475 | { FRBITS (empty_line_bits), 8, 3, ALIGN_BITMAP_TOP, 0 }, |
6b61353c KH |
476 | }; |
477 | ||
7840b332 KS |
478 | #define NO_FRINGE_BITMAP 0 |
479 | #define UNDEF_FRINGE_BITMAP 1 | |
480 | #define MAX_STANDARD_FRINGE_BITMAPS (sizeof(standard_bitmaps)/sizeof(standard_bitmaps[0])) | |
481 | ||
ad67849e | 482 | static struct fringe_bitmap **fringe_bitmaps; |
49ce2dbd | 483 | static Lisp_Object *fringe_faces; |
ad67849e | 484 | static int max_fringe_bitmaps; |
6b61353c | 485 | |
edfda783 | 486 | int max_used_fringe_bitmap = MAX_STANDARD_FRINGE_BITMAPS; |
6b61353c | 487 | |
4cce0ab7 KS |
488 | |
489 | /* Lookup bitmap number for symbol BITMAP. | |
490 | Return 0 if not a bitmap. */ | |
6b61353c KH |
491 | |
492 | int | |
971de7fb | 493 | lookup_fringe_bitmap (Lisp_Object bitmap) |
7a2a85be KS |
494 | { |
495 | int bn; | |
496 | ||
4cce0ab7 | 497 | bitmap = Fget (bitmap, Qfringe); |
7a2a85be KS |
498 | if (!INTEGERP (bitmap)) |
499 | return 0; | |
500 | ||
501 | bn = XINT (bitmap); | |
4cce0ab7 KS |
502 | if (bn > NO_FRINGE_BITMAP |
503 | && bn < max_used_fringe_bitmap | |
504 | && (bn < MAX_STANDARD_FRINGE_BITMAPS | |
505 | || fringe_bitmaps[bn] != NULL)) | |
506 | return bn; | |
507 | ||
508 | return 0; | |
7a2a85be KS |
509 | } |
510 | ||
511 | /* Get fringe bitmap name for bitmap number BN. | |
512 | ||
513 | Found by traversing Vfringe_bitmaps comparing BN to the | |
514 | fringe property for each symbol. | |
515 | ||
516 | Return BN if not found in Vfringe_bitmaps. */ | |
517 | ||
518 | static Lisp_Object | |
971de7fb | 519 | get_fringe_bitmap_name (int bn) |
7a2a85be KS |
520 | { |
521 | Lisp_Object bitmaps; | |
522 | Lisp_Object num; | |
523 | ||
524 | /* Zero means no bitmap -- return nil. */ | |
525 | if (bn <= 0) | |
526 | return Qnil; | |
527 | ||
528 | bitmaps = Vfringe_bitmaps; | |
529 | num = make_number (bn); | |
530 | ||
531 | while (CONSP (bitmaps)) | |
532 | { | |
533 | Lisp_Object bitmap = XCAR (bitmaps); | |
534 | if (EQ (num, Fget (bitmap, Qfringe))) | |
535 | return bitmap; | |
536 | bitmaps = XCDR (bitmaps); | |
537 | } | |
538 | ||
539 | return num; | |
540 | } | |
541 | ||
542 | ||
6b61353c KH |
543 | /* Draw the bitmap WHICH in one of the left or right fringes of |
544 | window W. ROW is the glyph row for which to display the bitmap; it | |
545 | determines the vertical position at which the bitmap has to be | |
546 | drawn. | |
547 | LEFT_P is 1 for left fringe, 0 for right fringe. | |
548 | */ | |
549 | ||
7840b332 | 550 | static void |
971de7fb | 551 | draw_fringe_bitmap_1 (struct window *w, struct glyph_row *row, int left_p, int overlay, int which) |
6b61353c KH |
552 | { |
553 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
554 | struct draw_fringe_bitmap_params p; | |
555 | struct fringe_bitmap *fb; | |
556 | int period; | |
557 | int face_id = DEFAULT_FACE_ID; | |
5a874e95 | 558 | int offset, header_line_height; |
6b61353c | 559 | |
6b61353c KH |
560 | p.overlay_p = (overlay & 1) == 1; |
561 | p.cursor_p = (overlay & 2) == 2; | |
562 | ||
563 | if (which != NO_FRINGE_BITMAP) | |
564 | { | |
5a874e95 | 565 | offset = 0; |
6b61353c KH |
566 | } |
567 | else if (left_p) | |
568 | { | |
569 | which = row->left_fringe_bitmap; | |
570 | face_id = row->left_fringe_face_id; | |
5a874e95 | 571 | offset = row->left_fringe_offset; |
6b61353c KH |
572 | } |
573 | else | |
574 | { | |
575 | which = row->right_fringe_bitmap; | |
576 | face_id = row->right_fringe_face_id; | |
5a874e95 | 577 | offset = row->right_fringe_offset; |
6b61353c KH |
578 | } |
579 | ||
580 | if (face_id == DEFAULT_FACE_ID) | |
49ce2dbd | 581 | { |
67aecef9 CY |
582 | Lisp_Object face = fringe_faces[which]; |
583 | face_id = NILP (face) ? lookup_named_face (f, Qfringe, 0) | |
584 | : lookup_derived_face (f, face, FRINGE_FACE_ID, 0); | |
585 | if (face_id < 0) | |
49ce2dbd KS |
586 | face_id = FRINGE_FACE_ID; |
587 | } | |
6b61353c KH |
588 | |
589 | fb = fringe_bitmaps[which]; | |
590 | if (fb == NULL) | |
591 | fb = &standard_bitmaps[which < MAX_STANDARD_FRINGE_BITMAPS | |
592 | ? which : UNDEF_FRINGE_BITMAP]; | |
593 | ||
594 | period = fb->period; | |
595 | ||
596 | /* Convert row to frame coordinates. */ | |
5a874e95 | 597 | p.y = WINDOW_TO_FRAME_PIXEL_Y (w, row->y) + offset; |
6b61353c KH |
598 | |
599 | p.which = which; | |
600 | p.bits = fb->bits; | |
601 | p.wd = fb->width; | |
602 | ||
603 | p.h = fb->height; | |
604 | p.dh = (period > 0 ? (p.y % period) : 0); | |
605 | p.h -= p.dh; | |
5a874e95 YM |
606 | |
607 | /* Adjust y to the offset in the row to start drawing the bitmap. */ | |
608 | switch (fb->align) | |
609 | { | |
610 | case ALIGN_BITMAP_CENTER: | |
611 | p.y += (row->height - p.h) / 2; | |
612 | break; | |
613 | case ALIGN_BITMAP_BOTTOM: | |
614 | p.y += (row->visible_height - p.h); | |
615 | break; | |
616 | case ALIGN_BITMAP_TOP: | |
617 | break; | |
618 | } | |
6b61353c KH |
619 | |
620 | p.face = FACE_FROM_ID (f, face_id); | |
621 | ||
622 | if (p.face == NULL) | |
623 | { | |
49ce2dbd KS |
624 | /* This could happen after clearing face cache. |
625 | But it shouldn't happen anymore. ++kfs */ | |
6b61353c KH |
626 | return; |
627 | } | |
628 | ||
629 | PREPARE_FACE_FOR_DISPLAY (f, p.face); | |
630 | ||
631 | /* Clear left fringe if no bitmap to draw or if bitmap doesn't fill | |
632 | the fringe. */ | |
633 | p.bx = -1; | |
5a874e95 YM |
634 | header_line_height = WINDOW_HEADER_LINE_HEIGHT (w); |
635 | p.by = WINDOW_TO_FRAME_PIXEL_Y (w, max (header_line_height, row->y)); | |
636 | p.ny = row->visible_height; | |
6b61353c KH |
637 | if (left_p) |
638 | { | |
639 | int wd = WINDOW_LEFT_FRINGE_WIDTH (w); | |
640 | int x = window_box_left (w, (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
641 | ? LEFT_MARGIN_AREA | |
642 | : TEXT_AREA)); | |
643 | if (p.wd > wd) | |
644 | p.wd = wd; | |
645 | p.x = x - p.wd - (wd - p.wd) / 2; | |
646 | ||
5a874e95 | 647 | if (p.wd < wd || p.y > p.by || p.y + p.h < p.by + p.ny) |
6b61353c KH |
648 | { |
649 | /* If W has a vertical border to its left, don't draw over it. */ | |
650 | wd -= ((!WINDOW_LEFTMOST_P (w) | |
651 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) | |
652 | ? 1 : 0); | |
653 | p.bx = x - wd; | |
654 | p.nx = wd; | |
655 | } | |
656 | } | |
657 | else | |
658 | { | |
659 | int x = window_box_right (w, | |
660 | (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
661 | ? RIGHT_MARGIN_AREA | |
662 | : TEXT_AREA)); | |
663 | int wd = WINDOW_RIGHT_FRINGE_WIDTH (w); | |
664 | if (p.wd > wd) | |
665 | p.wd = wd; | |
666 | p.x = x + (wd - p.wd) / 2; | |
667 | /* Clear right fringe if no bitmap to draw of if bitmap doesn't fill | |
668 | the fringe. */ | |
5a874e95 | 669 | if (p.wd < wd || p.y > p.by || p.y + p.h < p.by + p.ny) |
6b61353c KH |
670 | { |
671 | p.bx = x; | |
672 | p.nx = wd; | |
673 | } | |
674 | } | |
675 | ||
e581a466 | 676 | FRAME_RIF (f)->draw_fringe_bitmap (w, row, &p); |
6b61353c KH |
677 | } |
678 | ||
7840b332 | 679 | static int |
971de7fb | 680 | get_logical_cursor_bitmap (struct window *w, Lisp_Object cursor) |
7840b332 KS |
681 | { |
682 | Lisp_Object cmap, bm = Qnil; | |
683 | ||
684 | if ((cmap = XBUFFER (w->buffer)->fringe_cursor_alist), !NILP (cmap)) | |
685 | { | |
686 | bm = Fassq (cursor, cmap); | |
687 | if (CONSP (bm)) | |
688 | { | |
689 | if ((bm = XCDR (bm)), NILP (bm)) | |
690 | return NO_FRINGE_BITMAP; | |
691 | return lookup_fringe_bitmap (bm); | |
692 | } | |
693 | } | |
694 | if (EQ (cmap, buffer_defaults.fringe_cursor_alist)) | |
695 | return NO_FRINGE_BITMAP; | |
696 | bm = Fassq (cursor, buffer_defaults.fringe_cursor_alist); | |
697 | if (!CONSP (bm) || ((bm = XCDR (bm)), NILP (bm))) | |
698 | return NO_FRINGE_BITMAP; | |
699 | return lookup_fringe_bitmap (bm); | |
700 | } | |
701 | ||
702 | static int | |
971de7fb | 703 | get_logical_fringe_bitmap (struct window *w, Lisp_Object bitmap, int right_p, int partial_p) |
7840b332 KS |
704 | { |
705 | Lisp_Object cmap, bm1 = Qnil, bm2 = Qnil, bm; | |
706 | int ln1 = 0, ln2 = 0; | |
707 | int ix1 = right_p; | |
708 | int ix2 = ix1 + (partial_p ? 2 : 0); | |
709 | ||
710 | /* Lookup in buffer-local fringe-indicator-alist before global alist. | |
711 | ||
712 | Elements are: | |
713 | BITMAP -- use for all | |
714 | (L R) -- use for left right (whether partial or not) | |
78edd3b7 | 715 | (L R PL PR) -- use for left right partial-left partial-right |
7840b332 KS |
716 | If any value in local binding is not present or t, use global value. |
717 | ||
718 | If partial, lookup partial bitmap in default value if not found here. | |
719 | If not partial, or no partial spec is present, use non-partial bitmap. */ | |
720 | ||
721 | if ((cmap = XBUFFER (w->buffer)->fringe_indicator_alist), !NILP (cmap)) | |
722 | { | |
723 | bm1 = Fassq (bitmap, cmap); | |
724 | if (CONSP (bm1)) | |
725 | { | |
726 | if ((bm1 = XCDR (bm1)), NILP (bm1)) | |
727 | return NO_FRINGE_BITMAP; | |
728 | if (CONSP (bm1)) | |
729 | { | |
730 | ln1 = XINT (Flength (bm1)); | |
731 | if (partial_p) | |
732 | { | |
733 | if (ln1 > ix2) | |
734 | { | |
735 | bm = Fnth (make_number (ix2), bm1); | |
736 | if (!EQ (bm, Qt)) | |
737 | goto found; | |
738 | } | |
739 | } | |
740 | else | |
741 | { | |
742 | if (ln1 > ix1) | |
743 | { | |
744 | bm = Fnth (make_number (ix1), bm1); | |
745 | if (!EQ (bm, Qt)) | |
746 | goto found; | |
747 | } | |
748 | } | |
749 | } | |
750 | else if ((bm = bm1, !EQ (bm, Qt))) | |
751 | goto found; | |
752 | } | |
753 | } | |
754 | ||
755 | if (!EQ (cmap, buffer_defaults.fringe_indicator_alist) | |
756 | && !NILP (buffer_defaults.fringe_indicator_alist)) | |
757 | { | |
758 | bm2 = Fassq (bitmap, buffer_defaults.fringe_indicator_alist); | |
759 | if (CONSP (bm2)) | |
760 | { | |
761 | if ((bm2 = XCDR (bm2)), !NILP (bm2)) | |
762 | { | |
763 | if (CONSP (bm2)) | |
764 | { | |
765 | ln2 = XINT (Flength (bm2)); | |
766 | if (partial_p) | |
767 | { | |
768 | if (ln2 > ix2) | |
769 | { | |
770 | bm = Fnth (make_number (ix2), bm2); | |
771 | if (!EQ (bm, Qt)) | |
772 | goto found; | |
773 | } | |
774 | } | |
775 | } | |
776 | } | |
777 | } | |
778 | } | |
779 | ||
780 | if (ln1 > ix1) | |
781 | { | |
782 | bm = Fnth (make_number (ix1), bm1); | |
783 | if (!EQ (bm, Qt)) | |
784 | goto found; | |
785 | } | |
786 | ||
787 | if (ln2 > ix1) | |
788 | { | |
789 | bm = Fnth (make_number (ix1), bm2); | |
790 | if (!EQ (bm, Qt)) | |
791 | goto found; | |
792 | return NO_FRINGE_BITMAP; | |
793 | } | |
794 | else if ((bm = bm2, NILP (bm))) | |
795 | return NO_FRINGE_BITMAP; | |
796 | ||
797 | found: | |
798 | return lookup_fringe_bitmap (bm); | |
799 | } | |
800 | ||
801 | ||
6b61353c | 802 | void |
971de7fb | 803 | draw_fringe_bitmap (struct window *w, struct glyph_row *row, int left_p) |
6b61353c KH |
804 | { |
805 | int overlay = 0; | |
806 | ||
f951a506 | 807 | if (left_p == row->reversed_p && row->cursor_in_fringe_p) |
6b61353c | 808 | { |
7840b332 | 809 | Lisp_Object cursor = Qnil; |
6b61353c KH |
810 | |
811 | switch (w->phys_cursor_type) | |
812 | { | |
813 | case HOLLOW_BOX_CURSOR: | |
7840b332 KS |
814 | if (row->visible_height >= STANDARD_BITMAP_HEIGHT (hollow_rectangle_bits)) |
815 | cursor = Qhollow; | |
6b61353c | 816 | else |
7840b332 | 817 | cursor = Qhollow_small; |
6b61353c KH |
818 | break; |
819 | case FILLED_BOX_CURSOR: | |
7840b332 | 820 | cursor = Qbox; |
6b61353c KH |
821 | break; |
822 | case BAR_CURSOR: | |
7840b332 | 823 | cursor = Qbar; |
6b61353c KH |
824 | break; |
825 | case HBAR_CURSOR: | |
7840b332 | 826 | cursor = Qhbar; |
6b61353c KH |
827 | break; |
828 | case NO_CURSOR: | |
829 | default: | |
830 | w->phys_cursor_on_p = 0; | |
831 | row->cursor_in_fringe_p = 0; | |
832 | break; | |
833 | } | |
7840b332 | 834 | if (!NILP (cursor)) |
6b61353c | 835 | { |
7840b332 KS |
836 | int bm = get_logical_cursor_bitmap (w, cursor); |
837 | if (bm != NO_FRINGE_BITMAP) | |
838 | { | |
f951a506 | 839 | draw_fringe_bitmap_1 (w, row, left_p, 2, bm); |
7840b332 KS |
840 | overlay = EQ (cursor, Qbox) ? 3 : 1; |
841 | } | |
6b61353c KH |
842 | } |
843 | } | |
844 | ||
845 | draw_fringe_bitmap_1 (w, row, left_p, overlay, NO_FRINGE_BITMAP); | |
846 | ||
a8b34fae | 847 | if (left_p && row->overlay_arrow_bitmap != NO_FRINGE_BITMAP) |
7dfa5c49 | 848 | draw_fringe_bitmap_1 (w, row, 1, 1, row->overlay_arrow_bitmap); |
6b61353c KH |
849 | } |
850 | ||
851 | ||
852 | /* Draw fringe bitmaps for glyph row ROW on window W. Call this | |
853 | function with input blocked. */ | |
854 | ||
855 | void | |
971de7fb | 856 | draw_row_fringe_bitmaps (struct window *w, struct glyph_row *row) |
6b61353c KH |
857 | { |
858 | xassert (interrupt_input_blocked); | |
859 | ||
860 | /* If row is completely invisible, because of vscrolling, we | |
861 | don't have to draw anything. */ | |
862 | if (row->visible_height <= 0) | |
863 | return; | |
864 | ||
865 | if (WINDOW_LEFT_FRINGE_WIDTH (w) != 0) | |
866 | draw_fringe_bitmap (w, row, 1); | |
867 | ||
868 | if (WINDOW_RIGHT_FRINGE_WIDTH (w) != 0) | |
869 | draw_fringe_bitmap (w, row, 0); | |
870 | } | |
871 | ||
872 | /* Draw the fringes of window W. Only fringes for rows marked for | |
11491cbb | 873 | update in redraw_fringe_bitmaps_p are drawn. |
6b61353c | 874 | |
11491cbb KS |
875 | Return >0 if left or right fringe was redrawn in any way. |
876 | ||
877 | If NO_FRINGE is non-zero, also return >0 if either fringe has zero width. | |
878 | ||
879 | A return value >0 indicates that the vertical line between windows | |
880 | needs update (as it may be drawn in the fringe). | |
881 | */ | |
882 | ||
883 | int | |
971de7fb | 884 | draw_window_fringes (struct window *w, int no_fringe) |
6b61353c KH |
885 | { |
886 | struct glyph_row *row; | |
887 | int yb = window_text_bottom_y (w); | |
888 | int nrows = w->current_matrix->nrows; | |
5a874e95 | 889 | int y, rn; |
11491cbb | 890 | int updated = 0; |
6b61353c KH |
891 | |
892 | if (w->pseudo_window_p) | |
11491cbb KS |
893 | return 0; |
894 | ||
895 | /* Must draw line if no fringe */ | |
896 | if (no_fringe | |
897 | && (WINDOW_LEFT_FRINGE_WIDTH (w) == 0 | |
898 | || WINDOW_RIGHT_FRINGE_WIDTH (w) == 0)) | |
899 | updated++; | |
6b61353c | 900 | |
5a874e95 | 901 | for (y = w->vscroll, rn = 0, row = w->current_matrix->rows; |
6b61353c KH |
902 | y < yb && rn < nrows; |
903 | y += row->height, ++row, ++rn) | |
904 | { | |
905 | if (!row->redraw_fringe_bitmaps_p) | |
906 | continue; | |
907 | draw_row_fringe_bitmaps (w, row); | |
908 | row->redraw_fringe_bitmaps_p = 0; | |
11491cbb | 909 | updated++; |
6b61353c | 910 | } |
11491cbb KS |
911 | |
912 | return updated; | |
6b61353c KH |
913 | } |
914 | ||
915 | ||
916 | /* Recalculate the bitmaps to show in the fringes of window W. | |
4dadc129 KS |
917 | Only mark rows with modified bitmaps for update in redraw_fringe_bitmaps_p. |
918 | ||
919 | If KEEP_CURRENT_P is 0, update current_matrix too. */ | |
6b61353c KH |
920 | |
921 | int | |
971de7fb | 922 | update_window_fringes (struct window *w, int keep_current_p) |
6b61353c KH |
923 | { |
924 | struct glyph_row *row, *cur = 0; | |
925 | int yb = window_text_bottom_y (w); | |
926 | int rn, nrows = w->current_matrix->nrows; | |
927 | int y; | |
928 | int redraw_p = 0; | |
5797a7a0 KS |
929 | Lisp_Object boundary_top = Qnil, boundary_bot = Qnil; |
930 | Lisp_Object arrow_top = Qnil, arrow_bot = Qnil; | |
931 | Lisp_Object empty_pos; | |
932 | Lisp_Object ind = Qnil; | |
7840b332 KS |
933 | #define MAX_BITMAP_CACHE (8*4) |
934 | int bitmap_cache[MAX_BITMAP_CACHE]; | |
5a874e95 YM |
935 | int top_ind_rn, bot_ind_rn; |
936 | int top_ind_min_y, bot_ind_max_y; | |
937 | int top_row_ends_at_zv_p, bot_row_ends_at_zv_p; | |
6b61353c KH |
938 | |
939 | if (w->pseudo_window_p) | |
940 | return 0; | |
941 | ||
942 | if (!MINI_WINDOW_P (w) | |
943 | && (ind = XBUFFER (w->buffer)->indicate_buffer_boundaries, !NILP (ind))) | |
944 | { | |
5797a7a0 KS |
945 | if (EQ (ind, Qleft) || EQ (ind, Qright)) |
946 | boundary_top = boundary_bot = arrow_top = arrow_bot = ind; | |
947 | else if (CONSP (ind) && CONSP (XCAR (ind))) | |
948 | { | |
949 | Lisp_Object pos; | |
950 | if (pos = Fassq (Qt, ind), !NILP (pos)) | |
951 | boundary_top = boundary_bot = arrow_top = arrow_bot = XCDR (pos); | |
952 | if (pos = Fassq (Qtop, ind), !NILP (pos)) | |
953 | boundary_top = XCDR (pos); | |
954 | if (pos = Fassq (Qbottom, ind), !NILP (pos)) | |
955 | boundary_bot = XCDR (pos); | |
956 | if (pos = Fassq (Qup, ind), !NILP (pos)) | |
957 | arrow_top = XCDR (pos); | |
958 | if (pos = Fassq (Qdown, ind), !NILP (pos)) | |
959 | arrow_bot = XCDR (pos); | |
960 | } | |
6b61353c | 961 | else |
a208b89c KS |
962 | /* Anything else means boundary on left and no arrows. */ |
963 | boundary_top = boundary_bot = Qleft; | |
5797a7a0 | 964 | } |
6b61353c | 965 | |
5a874e95 | 966 | top_ind_rn = bot_ind_rn = -1; |
5797a7a0 KS |
967 | if (!NILP (ind)) |
968 | { | |
5a874e95 | 969 | for (y = w->vscroll, rn = 0; |
6b61353c KH |
970 | y < yb && rn < nrows; |
971 | y += row->height, ++rn) | |
972 | { | |
973 | unsigned indicate_bob_p, indicate_top_line_p; | |
974 | unsigned indicate_eob_p, indicate_bottom_line_p; | |
975 | ||
976 | row = w->desired_matrix->rows + rn; | |
977 | if (!row->enabled_p) | |
978 | row = w->current_matrix->rows + rn; | |
979 | ||
980 | indicate_bob_p = row->indicate_bob_p; | |
981 | indicate_top_line_p = row->indicate_top_line_p; | |
982 | indicate_eob_p = row->indicate_eob_p; | |
983 | indicate_bottom_line_p = row->indicate_bottom_line_p; | |
984 | ||
985 | row->indicate_bob_p = row->indicate_top_line_p = 0; | |
986 | row->indicate_eob_p = row->indicate_bottom_line_p = 0; | |
987 | ||
26a5d440 KS |
988 | if (!row->mode_line_p) |
989 | { | |
5a874e95 | 990 | if (top_ind_rn < 0 && row->visible_height > 0) |
26a5d440 | 991 | { |
18e1c39a KS |
992 | if (MATRIX_ROW_START_CHARPOS (row) <= BUF_BEGV (XBUFFER (w->buffer)) |
993 | && !MATRIX_ROW_PARTIALLY_VISIBLE_AT_TOP_P (w, row)) | |
26a5d440 KS |
994 | row->indicate_bob_p = !NILP (boundary_top); |
995 | else | |
996 | row->indicate_top_line_p = !NILP (arrow_top); | |
5a874e95 | 997 | top_ind_rn = rn; |
26a5d440 | 998 | } |
6b61353c | 999 | |
5a874e95 | 1000 | if (bot_ind_rn < 0) |
26a5d440 | 1001 | { |
18e1c39a KS |
1002 | if (MATRIX_ROW_END_CHARPOS (row) >= BUF_ZV (XBUFFER (w->buffer)) |
1003 | && !MATRIX_ROW_PARTIALLY_VISIBLE_AT_BOTTOM_P (w, row)) | |
5a874e95 | 1004 | row->indicate_eob_p = !NILP (boundary_bot), bot_ind_rn = rn; |
26a5d440 | 1005 | else if (y + row->height >= yb) |
5a874e95 | 1006 | row->indicate_bottom_line_p = !NILP (arrow_bot), bot_ind_rn = rn; |
26a5d440 KS |
1007 | } |
1008 | } | |
6b61353c KH |
1009 | } |
1010 | } | |
1011 | ||
5797a7a0 KS |
1012 | empty_pos = XBUFFER (w->buffer)->indicate_empty_lines; |
1013 | if (!NILP (empty_pos) && !EQ (empty_pos, Qright)) | |
1014 | empty_pos = WINDOW_LEFT_FRINGE_WIDTH (w) == 0 ? Qright : Qleft; | |
6b61353c | 1015 | |
7840b332 KS |
1016 | for (y = 0; y < MAX_BITMAP_CACHE; y++) |
1017 | bitmap_cache[y] = -1; | |
1018 | ||
1019 | #define LEFT_FRINGE(cache, which, partial_p) \ | |
1020 | (bitmap_cache[cache*4+partial_p] >= 0 \ | |
1021 | ? bitmap_cache[cache*4+partial_p] \ | |
1022 | : (bitmap_cache[cache*4+partial_p] = \ | |
1023 | get_logical_fringe_bitmap (w, which, 0, partial_p))) | |
1024 | ||
1025 | #define RIGHT_FRINGE(cache, which, partial_p) \ | |
1026 | (bitmap_cache[cache*4+2+partial_p] >= 0 \ | |
1027 | ? bitmap_cache[cache*4+2+partial_p] \ | |
1028 | : (bitmap_cache[cache*4+2+partial_p] = \ | |
1029 | get_logical_fringe_bitmap (w, which, 1, partial_p))) | |
1030 | ||
1031 | ||
5a874e95 YM |
1032 | /* Extend top-aligned top indicator (or bottom-aligned bottom |
1033 | indicator) to adjacent rows if it doesn't fit in one row. */ | |
1034 | top_ind_min_y = bot_ind_max_y = -1; | |
1035 | if (top_ind_rn >= 0) | |
1036 | { | |
1037 | int bn = NO_FRINGE_BITMAP; | |
1038 | ||
1039 | row = w->desired_matrix->rows + top_ind_rn; | |
1040 | if (!row->enabled_p) | |
1041 | row = w->current_matrix->rows + top_ind_rn; | |
1042 | ||
1043 | top_row_ends_at_zv_p = row->ends_at_zv_p; | |
1044 | if (row->indicate_bob_p) | |
1045 | { | |
1046 | if (EQ (boundary_top, Qleft)) | |
1047 | bn = ((row->indicate_eob_p && EQ (boundary_bot, Qleft)) | |
1048 | ? LEFT_FRINGE (1, Qtop_bottom, row->ends_at_zv_p) | |
1049 | : LEFT_FRINGE (2, Qtop, 0)); | |
1050 | else | |
1051 | bn = ((row->indicate_eob_p && EQ (boundary_bot, Qright)) | |
1052 | ? RIGHT_FRINGE (1, Qtop_bottom, row->ends_at_zv_p) | |
1053 | : RIGHT_FRINGE (2, Qtop, 0)); | |
1054 | } | |
1055 | else if (row->indicate_top_line_p) | |
1056 | { | |
1057 | if (EQ (arrow_top, Qleft)) | |
1058 | bn = LEFT_FRINGE (6, Qup, 0); | |
1059 | else | |
1060 | bn = RIGHT_FRINGE (6, Qup, 0); | |
1061 | } | |
1062 | ||
1063 | if (bn != NO_FRINGE_BITMAP) | |
1064 | { | |
1065 | struct fringe_bitmap *fb; | |
1066 | ||
1067 | fb = fringe_bitmaps[bn]; | |
1068 | if (fb == NULL) | |
1069 | fb = &standard_bitmaps[bn < MAX_STANDARD_FRINGE_BITMAPS | |
1070 | ? bn : UNDEF_FRINGE_BITMAP]; | |
1071 | if (fb->align == ALIGN_BITMAP_TOP && fb->period == 0) | |
1072 | { | |
1073 | struct glyph_row *row1; | |
1074 | int top_ind_max_y; | |
1075 | ||
1076 | top_ind_min_y = WINDOW_HEADER_LINE_HEIGHT (w); | |
1077 | top_ind_max_y = top_ind_min_y + fb->height; | |
1078 | if (top_ind_max_y > yb) | |
1079 | top_ind_max_y = yb; | |
1080 | ||
1081 | for (y = row->y + row->height, rn = top_ind_rn + 1; | |
1082 | y < top_ind_max_y && rn < nrows; | |
1083 | y += row1->height, rn++) | |
1084 | { | |
1085 | if (bot_ind_rn >= 0 && rn >= bot_ind_rn) | |
1086 | break; | |
1087 | ||
1088 | row1 = w->desired_matrix->rows + rn; | |
1089 | if (!row1->enabled_p) | |
1090 | row1 = w->current_matrix->rows + rn; | |
1091 | ||
1092 | row1->indicate_bob_p = row->indicate_bob_p; | |
1093 | row1->indicate_top_line_p = row->indicate_top_line_p; | |
1094 | } | |
1095 | } | |
1096 | } | |
1097 | } | |
1098 | if (bot_ind_rn >= 0) | |
1099 | { | |
1100 | int bn = NO_FRINGE_BITMAP; | |
1101 | ||
1102 | row = w->desired_matrix->rows + bot_ind_rn; | |
1103 | if (!row->enabled_p) | |
1104 | row = w->current_matrix->rows + bot_ind_rn; | |
1105 | ||
1106 | bot_row_ends_at_zv_p = row->ends_at_zv_p; | |
1107 | if (row->indicate_eob_p) | |
1108 | { | |
1109 | if (EQ (boundary_bot, Qleft)) | |
1110 | bn = LEFT_FRINGE (3, Qbottom, row->ends_at_zv_p); | |
1111 | else | |
1112 | bn = RIGHT_FRINGE (3, Qbottom, row->ends_at_zv_p); | |
1113 | } | |
1114 | else if (row->indicate_bottom_line_p) | |
1115 | { | |
1116 | if (EQ (arrow_bot, Qleft)) | |
1117 | bn = LEFT_FRINGE (7, Qdown, 0); | |
1118 | else | |
1119 | bn = RIGHT_FRINGE (7, Qdown, 0); | |
1120 | } | |
1121 | ||
1122 | if (bn != NO_FRINGE_BITMAP) | |
1123 | { | |
1124 | struct fringe_bitmap *fb; | |
1125 | ||
1126 | fb = fringe_bitmaps[bn]; | |
1127 | if (fb == NULL) | |
1128 | fb = &standard_bitmaps[bn < MAX_STANDARD_FRINGE_BITMAPS | |
1129 | ? bn : UNDEF_FRINGE_BITMAP]; | |
1130 | if (fb->align == ALIGN_BITMAP_BOTTOM && fb->period == 0) | |
1131 | { | |
1132 | struct glyph_row *row1; | |
1133 | int bot_ind_min_y; | |
1134 | ||
1135 | bot_ind_max_y = row->y + row->visible_height; | |
1136 | bot_ind_min_y = bot_ind_max_y - fb->height; | |
1137 | if (bot_ind_min_y < WINDOW_HEADER_LINE_HEIGHT (w)) | |
1138 | bot_ind_min_y = WINDOW_HEADER_LINE_HEIGHT (w); | |
1139 | ||
1140 | for (y = row->y, rn = bot_ind_rn - 1; | |
1141 | y >= bot_ind_min_y && rn >= 0; | |
1142 | y -= row1->height, rn--) | |
1143 | { | |
1144 | if (top_ind_rn >= 0 && rn <= top_ind_rn) | |
1145 | break; | |
1146 | ||
1147 | row1 = w->desired_matrix->rows + rn; | |
1148 | if (!row1->enabled_p) | |
1149 | row1 = w->current_matrix->rows + rn; | |
1150 | ||
1151 | row1->indicate_eob_p = row->indicate_eob_p; | |
1152 | row1->indicate_bottom_line_p = row->indicate_bottom_line_p; | |
1153 | } | |
1154 | } | |
1155 | } | |
1156 | } | |
1157 | ||
1158 | for (y = w->vscroll, rn = 0; | |
6b61353c KH |
1159 | y < yb && rn < nrows; |
1160 | y += row->height, rn++) | |
1161 | { | |
7840b332 | 1162 | int left, right; |
6b61353c | 1163 | unsigned left_face_id, right_face_id; |
5a874e95 | 1164 | int left_offset, right_offset; |
6b61353c KH |
1165 | |
1166 | row = w->desired_matrix->rows + rn; | |
1167 | cur = w->current_matrix->rows + rn; | |
1168 | if (!row->enabled_p) | |
1169 | row = cur; | |
1170 | ||
1171 | left_face_id = right_face_id = DEFAULT_FACE_ID; | |
5a874e95 | 1172 | left_offset = right_offset = 0; |
6b61353c KH |
1173 | |
1174 | /* Decide which bitmap to draw in the left fringe. */ | |
1175 | if (WINDOW_LEFT_FRINGE_WIDTH (w) == 0) | |
1176 | left = NO_FRINGE_BITMAP; | |
1177 | else if (row->left_user_fringe_bitmap != NO_FRINGE_BITMAP) | |
1178 | { | |
1179 | left = row->left_user_fringe_bitmap; | |
1180 | left_face_id = row->left_user_fringe_face_id; | |
1181 | } | |
96d79611 EZ |
1182 | else if ((!row->reversed_p && row->truncated_on_left_p) |
1183 | || (row->reversed_p && row->truncated_on_right_p)) | |
7840b332 | 1184 | left = LEFT_FRINGE(0, Qtruncation, 0); |
5797a7a0 | 1185 | else if (row->indicate_bob_p && EQ (boundary_top, Qleft)) |
5a874e95 YM |
1186 | { |
1187 | left = ((row->indicate_eob_p && EQ (boundary_bot, Qleft)) | |
1188 | ? LEFT_FRINGE (1, Qtop_bottom, top_row_ends_at_zv_p) | |
1189 | : LEFT_FRINGE (2, Qtop, 0)); | |
1190 | if (top_ind_min_y >= 0) | |
1191 | left_offset = top_ind_min_y - row->y; | |
1192 | } | |
5797a7a0 | 1193 | else if (row->indicate_eob_p && EQ (boundary_bot, Qleft)) |
5a874e95 YM |
1194 | { |
1195 | left = LEFT_FRINGE (3, Qbottom, bot_row_ends_at_zv_p); | |
1196 | if (bot_ind_max_y >= 0) | |
1197 | left_offset = bot_ind_max_y - (row->y + row->visible_height); | |
1198 | } | |
c4affd2c EZ |
1199 | else if ((!row->reversed_p && MATRIX_ROW_CONTINUATION_LINE_P (row)) |
1200 | || (row->reversed_p && row->continued_p)) | |
7840b332 | 1201 | left = LEFT_FRINGE (4, Qcontinuation, 0); |
5797a7a0 | 1202 | else if (row->indicate_empty_line_p && EQ (empty_pos, Qleft)) |
7840b332 | 1203 | left = LEFT_FRINGE (5, Qempty_line, 0); |
5797a7a0 | 1204 | else if (row->indicate_top_line_p && EQ (arrow_top, Qleft)) |
5a874e95 YM |
1205 | { |
1206 | left = LEFT_FRINGE (6, Qup, 0); | |
1207 | if (top_ind_min_y >= 0) | |
1208 | left_offset = top_ind_min_y - row->y; | |
1209 | } | |
5797a7a0 | 1210 | else if (row->indicate_bottom_line_p && EQ (arrow_bot, Qleft)) |
5a874e95 YM |
1211 | { |
1212 | left = LEFT_FRINGE (7, Qdown, 0); | |
1213 | if (bot_ind_max_y >= 0) | |
1214 | left_offset = bot_ind_max_y - (row->y + row->visible_height); | |
1215 | } | |
6b61353c KH |
1216 | else |
1217 | left = NO_FRINGE_BITMAP; | |
1218 | ||
1219 | /* Decide which bitmap to draw in the right fringe. */ | |
1220 | if (WINDOW_RIGHT_FRINGE_WIDTH (w) == 0) | |
1221 | right = NO_FRINGE_BITMAP; | |
1222 | else if (row->right_user_fringe_bitmap != NO_FRINGE_BITMAP) | |
1223 | { | |
1224 | right = row->right_user_fringe_bitmap; | |
1225 | right_face_id = row->right_user_fringe_face_id; | |
1226 | } | |
96d79611 EZ |
1227 | else if ((!row->reversed_p && row->truncated_on_right_p) |
1228 | || (row->reversed_p && row->truncated_on_left_p)) | |
7840b332 | 1229 | right = RIGHT_FRINGE (0, Qtruncation, 0); |
5797a7a0 | 1230 | else if (row->indicate_bob_p && EQ (boundary_top, Qright)) |
5a874e95 YM |
1231 | { |
1232 | right = ((row->indicate_eob_p && EQ (boundary_bot, Qright)) | |
1233 | ? RIGHT_FRINGE (1, Qtop_bottom, top_row_ends_at_zv_p) | |
1234 | : RIGHT_FRINGE (2, Qtop, 0)); | |
1235 | if (top_ind_min_y >= 0) | |
1236 | right_offset = top_ind_min_y - row->y; | |
1237 | } | |
5797a7a0 | 1238 | else if (row->indicate_eob_p && EQ (boundary_bot, Qright)) |
5a874e95 YM |
1239 | { |
1240 | right = RIGHT_FRINGE (3, Qbottom, bot_row_ends_at_zv_p); | |
1241 | if (bot_ind_max_y >= 0) | |
1242 | right_offset = bot_ind_max_y - (row->y + row->visible_height); | |
1243 | } | |
c4affd2c EZ |
1244 | else if ((!row->reversed_p && row->continued_p) |
1245 | || (row->reversed_p && MATRIX_ROW_CONTINUATION_LINE_P (row))) | |
7840b332 | 1246 | right = RIGHT_FRINGE (4, Qcontinuation, 0); |
5797a7a0 | 1247 | else if (row->indicate_top_line_p && EQ (arrow_top, Qright)) |
5a874e95 YM |
1248 | { |
1249 | right = RIGHT_FRINGE (6, Qup, 0); | |
1250 | if (top_ind_min_y >= 0) | |
1251 | right_offset = top_ind_min_y - row->y; | |
1252 | } | |
5797a7a0 | 1253 | else if (row->indicate_bottom_line_p && EQ (arrow_bot, Qright)) |
5a874e95 YM |
1254 | { |
1255 | right = RIGHT_FRINGE (7, Qdown, 0); | |
1256 | if (bot_ind_max_y >= 0) | |
1257 | right_offset = bot_ind_max_y - (row->y + row->visible_height); | |
1258 | } | |
5797a7a0 | 1259 | else if (row->indicate_empty_line_p && EQ (empty_pos, Qright)) |
7840b332 | 1260 | right = RIGHT_FRINGE (5, Qempty_line, 0); |
6b61353c KH |
1261 | else |
1262 | right = NO_FRINGE_BITMAP; | |
1263 | ||
4dadc129 | 1264 | if (row->y != cur->y |
6b61353c | 1265 | || row->visible_height != cur->visible_height |
81544a1d | 1266 | || row->ends_at_zv_p != cur->ends_at_zv_p |
6b61353c KH |
1267 | || left != cur->left_fringe_bitmap |
1268 | || right != cur->right_fringe_bitmap | |
1269 | || left_face_id != cur->left_fringe_face_id | |
1270 | || right_face_id != cur->right_fringe_face_id | |
5a874e95 YM |
1271 | || left_offset != cur->left_fringe_offset |
1272 | || right_offset != cur->right_fringe_offset | |
6b61353c KH |
1273 | || cur->redraw_fringe_bitmaps_p) |
1274 | { | |
4dadc129 KS |
1275 | redraw_p = row->redraw_fringe_bitmaps_p = 1; |
1276 | if (!keep_current_p) | |
1277 | { | |
1278 | cur->redraw_fringe_bitmaps_p = 1; | |
1279 | cur->left_fringe_bitmap = left; | |
1280 | cur->right_fringe_bitmap = right; | |
1281 | cur->left_fringe_face_id = left_face_id; | |
1282 | cur->right_fringe_face_id = right_face_id; | |
5a874e95 YM |
1283 | cur->left_fringe_offset = left_offset; |
1284 | cur->right_fringe_offset = right_offset; | |
4dadc129 | 1285 | } |
6b61353c KH |
1286 | } |
1287 | ||
7dfa5c49 KS |
1288 | if (row->overlay_arrow_bitmap < 0) |
1289 | row->overlay_arrow_bitmap = get_logical_fringe_bitmap (w, Qoverlay_arrow, 0, 0); | |
1290 | ||
a8b34fae | 1291 | if (row->overlay_arrow_bitmap != cur->overlay_arrow_bitmap) |
6b61353c KH |
1292 | { |
1293 | redraw_p = row->redraw_fringe_bitmaps_p = cur->redraw_fringe_bitmaps_p = 1; | |
a8b34fae | 1294 | cur->overlay_arrow_bitmap = row->overlay_arrow_bitmap; |
6b61353c KH |
1295 | } |
1296 | ||
1297 | row->left_fringe_bitmap = left; | |
1298 | row->right_fringe_bitmap = right; | |
1299 | row->left_fringe_face_id = left_face_id; | |
1300 | row->right_fringe_face_id = right_face_id; | |
5a874e95 YM |
1301 | row->left_fringe_offset = left_offset; |
1302 | row->right_fringe_offset = right_offset; | |
6b61353c KH |
1303 | } |
1304 | ||
4dadc129 | 1305 | return redraw_p && !keep_current_p; |
6b61353c KH |
1306 | } |
1307 | ||
1308 | ||
1309 | /* Compute actual fringe widths for frame F. | |
1310 | ||
1311 | If REDRAW is 1, redraw F if the fringe settings was actually | |
1312 | modified and F is visible. | |
1313 | ||
1314 | Since the combined left and right fringe must occupy an integral | |
1315 | number of columns, we may need to add some pixels to each fringe. | |
1316 | Typically, we add an equal amount (+/- 1 pixel) to each fringe, | |
1317 | but a negative width value is taken literally (after negating it). | |
1318 | ||
11491cbb | 1319 | We never make the fringes narrower than specified. |
6b61353c KH |
1320 | */ |
1321 | ||
1322 | void | |
971de7fb | 1323 | compute_fringe_widths (struct frame *f, int redraw) |
6b61353c KH |
1324 | { |
1325 | int o_left = FRAME_LEFT_FRINGE_WIDTH (f); | |
1326 | int o_right = FRAME_RIGHT_FRINGE_WIDTH (f); | |
1327 | int o_cols = FRAME_FRINGE_COLS (f); | |
1328 | ||
1329 | Lisp_Object left_fringe = Fassq (Qleft_fringe, f->param_alist); | |
1330 | Lisp_Object right_fringe = Fassq (Qright_fringe, f->param_alist); | |
1331 | int left_fringe_width, right_fringe_width; | |
1332 | ||
1333 | if (!NILP (left_fringe)) | |
1334 | left_fringe = Fcdr (left_fringe); | |
1335 | if (!NILP (right_fringe)) | |
1336 | right_fringe = Fcdr (right_fringe); | |
1337 | ||
1338 | left_fringe_width = ((NILP (left_fringe) || !INTEGERP (left_fringe)) ? 8 : | |
1339 | XINT (left_fringe)); | |
1340 | right_fringe_width = ((NILP (right_fringe) || !INTEGERP (right_fringe)) ? 8 : | |
1341 | XINT (right_fringe)); | |
1342 | ||
1343 | if (left_fringe_width || right_fringe_width) | |
1344 | { | |
1345 | int left_wid = left_fringe_width >= 0 ? left_fringe_width : -left_fringe_width; | |
1346 | int right_wid = right_fringe_width >= 0 ? right_fringe_width : -right_fringe_width; | |
1347 | int conf_wid = left_wid + right_wid; | |
1348 | int font_wid = FRAME_COLUMN_WIDTH (f); | |
1349 | int cols = (left_wid + right_wid + font_wid-1) / font_wid; | |
1350 | int real_wid = cols * font_wid; | |
1351 | if (left_wid && right_wid) | |
1352 | { | |
1353 | if (left_fringe_width < 0) | |
1354 | { | |
1355 | /* Left fringe width is fixed, adjust right fringe if necessary */ | |
1356 | FRAME_LEFT_FRINGE_WIDTH (f) = left_wid; | |
1357 | FRAME_RIGHT_FRINGE_WIDTH (f) = real_wid - left_wid; | |
1358 | } | |
1359 | else if (right_fringe_width < 0) | |
1360 | { | |
1361 | /* Right fringe width is fixed, adjust left fringe if necessary */ | |
1362 | FRAME_LEFT_FRINGE_WIDTH (f) = real_wid - right_wid; | |
1363 | FRAME_RIGHT_FRINGE_WIDTH (f) = right_wid; | |
1364 | } | |
1365 | else | |
1366 | { | |
1367 | /* Adjust both fringes with an equal amount. | |
1368 | Note that we are doing integer arithmetic here, so don't | |
1369 | lose a pixel if the total width is an odd number. */ | |
1370 | int fill = real_wid - conf_wid; | |
1371 | FRAME_LEFT_FRINGE_WIDTH (f) = left_wid + fill/2; | |
1372 | FRAME_RIGHT_FRINGE_WIDTH (f) = right_wid + fill - fill/2; | |
1373 | } | |
1374 | } | |
1375 | else if (left_fringe_width) | |
1376 | { | |
1377 | FRAME_LEFT_FRINGE_WIDTH (f) = real_wid; | |
1378 | FRAME_RIGHT_FRINGE_WIDTH (f) = 0; | |
1379 | } | |
1380 | else | |
1381 | { | |
1382 | FRAME_LEFT_FRINGE_WIDTH (f) = 0; | |
1383 | FRAME_RIGHT_FRINGE_WIDTH (f) = real_wid; | |
1384 | } | |
1385 | FRAME_FRINGE_COLS (f) = cols; | |
1386 | } | |
1387 | else | |
1388 | { | |
1389 | FRAME_LEFT_FRINGE_WIDTH (f) = 0; | |
1390 | FRAME_RIGHT_FRINGE_WIDTH (f) = 0; | |
1391 | FRAME_FRINGE_COLS (f) = 0; | |
1392 | } | |
1393 | ||
1394 | if (redraw && FRAME_VISIBLE_P (f)) | |
1395 | if (o_left != FRAME_LEFT_FRINGE_WIDTH (f) || | |
1396 | o_right != FRAME_RIGHT_FRINGE_WIDTH (f) || | |
1397 | o_cols != FRAME_FRINGE_COLS (f)) | |
1398 | redraw_frame (f); | |
1399 | } | |
1400 | ||
7a2a85be | 1401 | |
4cce0ab7 KS |
1402 | /* Free resources used by a user-defined bitmap. */ |
1403 | ||
c3c69bb6 | 1404 | void |
971de7fb | 1405 | destroy_fringe_bitmap (int n) |
6b61353c | 1406 | { |
6b61353c KH |
1407 | struct fringe_bitmap **fbp; |
1408 | ||
49ce2dbd | 1409 | fringe_faces[n] = Qnil; |
6b61353c KH |
1410 | |
1411 | fbp = &fringe_bitmaps[n]; | |
1412 | if (*fbp && (*fbp)->dynamic) | |
1413 | { | |
e581a466 | 1414 | /* XXX Is SELECTED_FRAME OK here? */ |
04ccca97 | 1415 | struct redisplay_interface *rif = FRAME_RIF (SELECTED_FRAME ()); |
f2be4fd0 | 1416 | if (rif && rif->destroy_fringe_bitmap) |
6b61353c KH |
1417 | rif->destroy_fringe_bitmap (n); |
1418 | xfree (*fbp); | |
1419 | *fbp = NULL; | |
1420 | } | |
1421 | ||
1422 | while (max_used_fringe_bitmap > MAX_STANDARD_FRINGE_BITMAPS | |
1423 | && fringe_bitmaps[max_used_fringe_bitmap - 1] == NULL) | |
1424 | max_used_fringe_bitmap--; | |
7a2a85be KS |
1425 | } |
1426 | ||
6b61353c | 1427 | |
7a2a85be KS |
1428 | DEFUN ("destroy-fringe-bitmap", Fdestroy_fringe_bitmap, Sdestroy_fringe_bitmap, |
1429 | 1, 1, 0, | |
1430 | doc: /* Destroy fringe bitmap BITMAP. | |
1431 | If BITMAP overrides a standard fringe bitmap, the original bitmap is restored. */) | |
5842a27b | 1432 | (Lisp_Object bitmap) |
7a2a85be KS |
1433 | { |
1434 | int n; | |
7a2a85be | 1435 | |
4cce0ab7 KS |
1436 | CHECK_SYMBOL (bitmap); |
1437 | n = lookup_fringe_bitmap (bitmap); | |
1438 | if (!n) | |
7a2a85be KS |
1439 | return Qnil; |
1440 | ||
1441 | destroy_fringe_bitmap (n); | |
2d05deef | 1442 | |
4cce0ab7 | 1443 | if (n >= MAX_STANDARD_FRINGE_BITMAPS) |
7a2a85be | 1444 | { |
4cce0ab7 | 1445 | Vfringe_bitmaps = Fdelq (bitmap, Vfringe_bitmaps); |
7a2a85be | 1446 | /* It would be better to remove the fringe property. */ |
4cce0ab7 | 1447 | Fput (bitmap, Qfringe, Qnil); |
7a2a85be | 1448 | } |
4cce0ab7 | 1449 | |
6b61353c KH |
1450 | return Qnil; |
1451 | } | |
1452 | ||
1453 | ||
1454 | /* Initialize bitmap bit. | |
1455 | ||
1456 | On X, we bit-swap the built-in bitmaps and reduce bitmap | |
1457 | from short to char array if width is <= 8 bits. | |
1458 | ||
1459 | On MAC with big-endian CPU, we need to byte-swap each short. | |
1460 | ||
1461 | On W32 and MAC (little endian), there's no need to do this. | |
1462 | */ | |
1463 | ||
2e4e5023 | 1464 | #if defined (HAVE_X_WINDOWS) |
91433552 | 1465 | static const unsigned char swap_nibble[16] = { |
2e4e5023 GM |
1466 | 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */ |
1467 | 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */ | |
1468 | 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */ | |
1469 | 0x3, 0xb, 0x7, 0xf}; /* 0011 1011 0111 1111 */ | |
1470 | #endif /* HAVE_X_WINDOWS */ | |
1471 | ||
6b61353c | 1472 | void |
971de7fb | 1473 | init_fringe_bitmap (int which, struct fringe_bitmap *fb, int once_p) |
6b61353c KH |
1474 | { |
1475 | if (once_p || fb->dynamic) | |
1476 | { | |
1477 | #if defined (HAVE_X_WINDOWS) | |
6b61353c KH |
1478 | unsigned short *bits = fb->bits; |
1479 | int j; | |
1480 | ||
1481 | if (fb->width <= 8) | |
1482 | { | |
1483 | unsigned char *cbits = (unsigned char *)fb->bits; | |
1484 | for (j = 0; j < fb->height; j++) | |
1485 | { | |
1486 | unsigned short b = *bits++; | |
1487 | unsigned char c; | |
1488 | c = (unsigned char)((swap_nibble[b & 0xf] << 4) | |
1489 | | (swap_nibble[(b>>4) & 0xf])); | |
1490 | *cbits++ = (c >> (8 - fb->width)); | |
1491 | } | |
1492 | } | |
1493 | else | |
1494 | { | |
1495 | for (j = 0; j < fb->height; j++) | |
1496 | { | |
1497 | unsigned short b = *bits; | |
1498 | b = (unsigned short)((swap_nibble[b & 0xf] << 12) | |
1499 | | (swap_nibble[(b>>4) & 0xf] << 8) | |
1500 | | (swap_nibble[(b>>8) & 0xf] << 4) | |
1501 | | (swap_nibble[(b>>12) & 0xf])); | |
4e8231f3 YM |
1502 | b >>= (16 - fb->width); |
1503 | #ifdef WORDS_BIG_ENDIAN | |
1504 | b = ((b >> 8) | (b << 8)); | |
1505 | #endif | |
1506 | *bits++ = b; | |
6b61353c KH |
1507 | } |
1508 | } | |
1509 | #endif /* HAVE_X_WINDOWS */ | |
1510 | ||
6b61353c KH |
1511 | } |
1512 | ||
1513 | if (!once_p) | |
1514 | { | |
e581a466 | 1515 | /* XXX Is SELECTED_FRAME OK here? */ |
04ccca97 | 1516 | struct redisplay_interface *rif = FRAME_RIF (SELECTED_FRAME ()); |
a284b538 | 1517 | |
7a2a85be | 1518 | destroy_fringe_bitmap (which); |
6b61353c | 1519 | |
f2be4fd0 | 1520 | if (rif && rif->define_fringe_bitmap) |
6b61353c KH |
1521 | rif->define_fringe_bitmap (which, fb->bits, fb->height, fb->width); |
1522 | ||
1523 | fringe_bitmaps[which] = fb; | |
1524 | if (which >= max_used_fringe_bitmap) | |
1525 | max_used_fringe_bitmap = which + 1; | |
1526 | } | |
1527 | } | |
1528 | ||
1529 | ||
1530 | DEFUN ("define-fringe-bitmap", Fdefine_fringe_bitmap, Sdefine_fringe_bitmap, | |
7a2a85be KS |
1531 | 2, 5, 0, |
1532 | doc: /* Define fringe bitmap BITMAP from BITS of size HEIGHT x WIDTH. | |
2faacff7 | 1533 | BITMAP is a symbol identifying the new fringe bitmap. |
6b61353c KH |
1534 | BITS is either a string or a vector of integers. |
1535 | HEIGHT is height of bitmap. If HEIGHT is nil, use length of BITS. | |
1536 | WIDTH must be an integer between 1 and 16, or nil which defaults to 8. | |
7a2a85be | 1537 | Optional fifth arg ALIGN may be one of `top', `center', or `bottom', |
6b61353c | 1538 | indicating the positioning of the bitmap relative to the rows where it |
6b72791f | 1539 | is used; the default is to center the bitmap. Fifth arg may also be a |
6b61353c KH |
1540 | list (ALIGN PERIODIC) where PERIODIC non-nil specifies that the bitmap |
1541 | should be repeated. | |
7a2a85be | 1542 | If BITMAP already exists, the existing definition is replaced. */) |
5842a27b | 1543 | (Lisp_Object bitmap, Lisp_Object bits, Lisp_Object height, Lisp_Object width, Lisp_Object align) |
6b61353c | 1544 | { |
6b61353c KH |
1545 | int n, h, i, j; |
1546 | unsigned short *b; | |
1547 | struct fringe_bitmap fb, *xfb; | |
1548 | int fill1 = 0, fill2 = 0; | |
7a2a85be | 1549 | |
4cce0ab7 | 1550 | CHECK_SYMBOL (bitmap); |
6b61353c | 1551 | |
11e04b2d KS |
1552 | if (STRINGP (bits)) |
1553 | h = SCHARS (bits); | |
1554 | else if (VECTORP (bits)) | |
1555 | h = XVECTOR (bits)->size; | |
1556 | else | |
7fee0b51 | 1557 | wrong_type_argument (Qsequencep, bits); |
6b61353c KH |
1558 | |
1559 | if (NILP (height)) | |
11e04b2d | 1560 | fb.height = h; |
6b61353c KH |
1561 | else |
1562 | { | |
1563 | CHECK_NUMBER (height); | |
1564 | fb.height = min (XINT (height), 255); | |
11e04b2d | 1565 | if (fb.height > h) |
6b61353c | 1566 | { |
6b61353c KH |
1567 | fill1 = (fb.height - h) / 2; |
1568 | fill2 = fb.height - h - fill1; | |
1569 | } | |
1570 | } | |
1571 | ||
1572 | if (NILP (width)) | |
1573 | fb.width = 8; | |
1574 | else | |
1575 | { | |
1576 | CHECK_NUMBER (width); | |
1577 | fb.width = min (XINT (width), 255); | |
1578 | } | |
1579 | ||
1580 | fb.period = 0; | |
1581 | fb.align = ALIGN_BITMAP_CENTER; | |
1582 | ||
1583 | if (CONSP (align)) | |
1584 | { | |
1585 | Lisp_Object period = XCDR (align); | |
1586 | if (CONSP (period)) | |
1587 | { | |
1588 | period = XCAR (period); | |
1589 | if (!NILP (period)) | |
1590 | { | |
1591 | fb.period = fb.height; | |
1592 | fb.height = 255; | |
1593 | } | |
1594 | } | |
1595 | align = XCAR (align); | |
1596 | } | |
1597 | if (EQ (align, Qtop)) | |
1598 | fb.align = ALIGN_BITMAP_TOP; | |
1599 | else if (EQ (align, Qbottom)) | |
1600 | fb.align = ALIGN_BITMAP_BOTTOM; | |
1601 | else if (!NILP (align) && !EQ (align, Qcenter)) | |
1602 | error ("Bad align argument"); | |
1603 | ||
ad67849e | 1604 | n = lookup_fringe_bitmap (bitmap); |
4cce0ab7 | 1605 | if (!n) |
6b61353c | 1606 | { |
ad67849e | 1607 | if (max_used_fringe_bitmap < max_fringe_bitmaps) |
6b61353c KH |
1608 | n = max_used_fringe_bitmap++; |
1609 | else | |
1610 | { | |
1611 | for (n = MAX_STANDARD_FRINGE_BITMAPS; | |
ad67849e | 1612 | n < max_fringe_bitmaps; |
6b61353c KH |
1613 | n++) |
1614 | if (fringe_bitmaps[n] == NULL) | |
1615 | break; | |
ad67849e KS |
1616 | |
1617 | if (n == max_fringe_bitmaps) | |
1618 | { | |
1619 | if ((max_fringe_bitmaps + 20) > MAX_FRINGE_BITMAPS) | |
1620 | error ("No free fringe bitmap slots"); | |
1621 | ||
1622 | i = max_fringe_bitmaps; | |
1623 | max_fringe_bitmaps += 20; | |
1624 | fringe_bitmaps | |
1625 | = ((struct fringe_bitmap **) | |
1626 | xrealloc (fringe_bitmaps, max_fringe_bitmaps * sizeof (struct fringe_bitmap *))); | |
1627 | fringe_faces | |
50af5100 | 1628 | = (Lisp_Object *) xrealloc (fringe_faces, max_fringe_bitmaps * sizeof (Lisp_Object)); |
ad67849e KS |
1629 | |
1630 | for (; i < max_fringe_bitmaps; i++) | |
1631 | { | |
1632 | fringe_bitmaps[i] = NULL; | |
49ce2dbd | 1633 | fringe_faces[i] = Qnil; |
ad67849e KS |
1634 | } |
1635 | } | |
6b61353c | 1636 | } |
7a2a85be | 1637 | |
4cce0ab7 KS |
1638 | Vfringe_bitmaps = Fcons (bitmap, Vfringe_bitmaps); |
1639 | Fput (bitmap, Qfringe, make_number (n)); | |
6b61353c KH |
1640 | } |
1641 | ||
1642 | fb.dynamic = 1; | |
1643 | ||
1644 | xfb = (struct fringe_bitmap *) xmalloc (sizeof fb | |
1645 | + fb.height * BYTES_PER_BITMAP_ROW); | |
1646 | fb.bits = b = (unsigned short *) (xfb + 1); | |
72af86bd | 1647 | memset (b, 0, fb.height); |
6b61353c KH |
1648 | |
1649 | j = 0; | |
1650 | while (j < fb.height) | |
1651 | { | |
1652 | for (i = 0; i < fill1 && j < fb.height; i++) | |
1653 | b[j++] = 0; | |
1654 | for (i = 0; i < h && j < fb.height; i++) | |
1655 | { | |
1656 | Lisp_Object elt = Faref (bits, make_number (i)); | |
1657 | b[j++] = NUMBERP (elt) ? XINT (elt) : 0; | |
1658 | } | |
1659 | for (i = 0; i < fill2 && j < fb.height; i++) | |
1660 | b[j++] = 0; | |
1661 | } | |
1662 | ||
1663 | *xfb = fb; | |
1664 | ||
1665 | init_fringe_bitmap (n, xfb, 0); | |
1666 | ||
4cce0ab7 | 1667 | return bitmap; |
6b61353c KH |
1668 | } |
1669 | ||
1670 | DEFUN ("set-fringe-bitmap-face", Fset_fringe_bitmap_face, Sset_fringe_bitmap_face, | |
1671 | 1, 2, 0, | |
7a2a85be | 1672 | doc: /* Set face for fringe bitmap BITMAP to FACE. |
6b61353c | 1673 | If FACE is nil, reset face to default fringe face. */) |
5842a27b | 1674 | (Lisp_Object bitmap, Lisp_Object face) |
6b61353c | 1675 | { |
4cce0ab7 | 1676 | int n; |
6b61353c KH |
1677 | int face_id; |
1678 | ||
4cce0ab7 KS |
1679 | CHECK_SYMBOL (bitmap); |
1680 | n = lookup_fringe_bitmap (bitmap); | |
1681 | if (!n) | |
7a2a85be | 1682 | error ("Undefined fringe bitmap"); |
6b61353c KH |
1683 | |
1684 | if (!NILP (face)) | |
1685 | { | |
308785c1 | 1686 | face_id = lookup_derived_face (SELECTED_FRAME (), face, |
5c538596 | 1687 | FRINGE_FACE_ID, 1); |
6b61353c KH |
1688 | if (face_id < 0) |
1689 | error ("No such face"); | |
1690 | } | |
6b61353c | 1691 | |
49ce2dbd | 1692 | fringe_faces[n] = face; |
6b61353c KH |
1693 | |
1694 | return Qnil; | |
1695 | } | |
1696 | ||
1697 | DEFUN ("fringe-bitmaps-at-pos", Ffringe_bitmaps_at_pos, Sfringe_bitmaps_at_pos, | |
1698 | 0, 2, 0, | |
1699 | doc: /* Return fringe bitmaps of row containing position POS in window WINDOW. | |
1700 | If WINDOW is nil, use selected window. If POS is nil, use value of point | |
d3848fe9 KS |
1701 | in that window. Return value is a list (LEFT RIGHT OV), where LEFT |
1702 | is the symbol for the bitmap in the left fringe (or nil if no bitmap), | |
1703 | RIGHT is similar for the right fringe, and OV is non-nil if there is an | |
1704 | overlay arrow in the left fringe. | |
5797a7a0 | 1705 | Return nil if POS is not visible in WINDOW. */) |
5842a27b | 1706 | (Lisp_Object pos, Lisp_Object window) |
6b61353c KH |
1707 | { |
1708 | struct window *w; | |
6b61353c KH |
1709 | struct glyph_row *row; |
1710 | int textpos; | |
1711 | ||
1712 | if (NILP (window)) | |
1713 | window = selected_window; | |
1714 | CHECK_WINDOW (window); | |
1715 | w = XWINDOW (window); | |
1716 | ||
1717 | if (!NILP (pos)) | |
1718 | { | |
1719 | CHECK_NUMBER_COERCE_MARKER (pos); | |
1720 | textpos = XINT (pos); | |
1721 | } | |
1722 | else if (w == XWINDOW (selected_window)) | |
1723 | textpos = PT; | |
1724 | else | |
1725 | textpos = XMARKER (w->pointm)->charpos; | |
1726 | ||
1727 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
1728 | row = row_containing_pos (w, textpos, row, NULL, 0); | |
1729 | if (row) | |
d3848fe9 KS |
1730 | return list3 (get_fringe_bitmap_name (row->left_fringe_bitmap), |
1731 | get_fringe_bitmap_name (row->right_fringe_bitmap), | |
a8b34fae KS |
1732 | (row->overlay_arrow_bitmap == 0 ? Qnil |
1733 | : row->overlay_arrow_bitmap < 0 ? Qt | |
1734 | : get_fringe_bitmap_name (row->overlay_arrow_bitmap))); | |
6b61353c KH |
1735 | else |
1736 | return Qnil; | |
1737 | } | |
1738 | ||
1739 | ||
1740 | /*********************************************************************** | |
1741 | Initialization | |
1742 | ***********************************************************************/ | |
1743 | ||
1744 | void | |
971de7fb | 1745 | syms_of_fringe (void) |
6b61353c | 1746 | { |
d67b4f80 | 1747 | Qtruncation = intern_c_string ("truncation"); |
7840b332 | 1748 | staticpro (&Qtruncation); |
d67b4f80 | 1749 | Qcontinuation = intern_c_string ("continuation"); |
7840b332 | 1750 | staticpro (&Qcontinuation); |
d67b4f80 | 1751 | Qoverlay_arrow = intern_c_string ("overlay-arrow"); |
7840b332 | 1752 | staticpro (&Qoverlay_arrow); |
d67b4f80 | 1753 | Qempty_line = intern_c_string ("empty-line"); |
7840b332 | 1754 | staticpro (&Qempty_line); |
d67b4f80 | 1755 | Qtop_bottom = intern_c_string ("top-bottom"); |
7840b332 | 1756 | staticpro (&Qtop_bottom); |
d67b4f80 | 1757 | Qhollow_small = intern_c_string ("hollow-small"); |
7840b332 KS |
1758 | staticpro (&Qhollow_small); |
1759 | ||
6b61353c KH |
1760 | defsubr (&Sdestroy_fringe_bitmap); |
1761 | defsubr (&Sdefine_fringe_bitmap); | |
1762 | defsubr (&Sfringe_bitmaps_at_pos); | |
1763 | defsubr (&Sset_fringe_bitmap_face); | |
1764 | ||
1765 | DEFVAR_LISP ("overflow-newline-into-fringe", &Voverflow_newline_into_fringe, | |
1766 | doc: /* *Non-nil means that newline may flow into the right fringe. | |
1767 | This means that display lines which are exactly as wide as the window | |
1768 | (not counting the final newline) will only occupy one screen line, by | |
1769 | showing (or hiding) the final newline in the right fringe; when point | |
1770 | is at the final newline, the cursor is shown in the right fringe. | |
1771 | If nil, also continue lines which are exactly as wide as the window. */); | |
1772 | Voverflow_newline_into_fringe = Qt; | |
1773 | ||
7a2a85be | 1774 | DEFVAR_LISP ("fringe-bitmaps", &Vfringe_bitmaps, |
a4b7b036 | 1775 | doc: /* List of fringe bitmap symbols. */); |
7a2a85be | 1776 | Vfringe_bitmaps = Qnil; |
6b61353c KH |
1777 | } |
1778 | ||
49ce2dbd KS |
1779 | /* Garbage collection hook */ |
1780 | ||
1781 | void | |
971de7fb | 1782 | mark_fringe_data (void) |
49ce2dbd KS |
1783 | { |
1784 | int i; | |
1785 | ||
1786 | for (i = 0; i < max_fringe_bitmaps; i++) | |
1787 | if (!NILP (fringe_faces[i])) | |
1788 | mark_object (fringe_faces[i]); | |
1789 | } | |
1790 | ||
6b61353c KH |
1791 | /* Initialize this module when Emacs starts. */ |
1792 | ||
1793 | void | |
971de7fb | 1794 | init_fringe_once (void) |
6b61353c | 1795 | { |
7840b332 | 1796 | int bt; |
6b61353c KH |
1797 | |
1798 | for (bt = NO_FRINGE_BITMAP + 1; bt < MAX_STANDARD_FRINGE_BITMAPS; bt++) | |
1799 | init_fringe_bitmap(bt, &standard_bitmaps[bt], 1); | |
1800 | } | |
1801 | ||
1802 | void | |
971de7fb | 1803 | init_fringe (void) |
6b61353c KH |
1804 | { |
1805 | int i; | |
1806 | ||
ad67849e KS |
1807 | max_fringe_bitmaps = MAX_STANDARD_FRINGE_BITMAPS + 20; |
1808 | ||
1809 | fringe_bitmaps | |
1810 | = (struct fringe_bitmap **) xmalloc (max_fringe_bitmaps * sizeof (struct fringe_bitmap *)); | |
1811 | fringe_faces | |
50af5100 | 1812 | = (Lisp_Object *) xmalloc (max_fringe_bitmaps * sizeof (Lisp_Object)); |
ad67849e KS |
1813 | |
1814 | for (i = 0; i < max_fringe_bitmaps; i++) | |
1815 | { | |
1816 | fringe_bitmaps[i] = NULL; | |
49ce2dbd | 1817 | fringe_faces[i] = Qnil; |
ad67849e | 1818 | } |
6b61353c KH |
1819 | } |
1820 | ||
9e2a2647 | 1821 | #ifdef HAVE_NTGUI |
6b61353c KH |
1822 | |
1823 | void | |
9e2a2647 | 1824 | w32_init_fringe (struct redisplay_interface *rif) |
6b61353c | 1825 | { |
7840b332 | 1826 | int bt; |
6b61353c | 1827 | |
f2be4fd0 KS |
1828 | if (!rif) |
1829 | return; | |
1830 | ||
6b61353c KH |
1831 | for (bt = NO_FRINGE_BITMAP + 1; bt < MAX_STANDARD_FRINGE_BITMAPS; bt++) |
1832 | { | |
1833 | struct fringe_bitmap *fb = &standard_bitmaps[bt]; | |
1834 | rif->define_fringe_bitmap (bt, fb->bits, fb->height, fb->width); | |
1835 | } | |
1836 | } | |
1837 | ||
1838 | void | |
1839 | w32_reset_fringes () | |
1840 | { | |
1841 | /* Destroy row bitmaps. */ | |
1842 | int bt; | |
5c217767 | 1843 | struct redisplay_interface *rif = FRAME_RIF (SELECTED_FRAME ()); |
6b61353c | 1844 | |
f2be4fd0 KS |
1845 | if (!rif) |
1846 | return; | |
1847 | ||
6b61353c KH |
1848 | for (bt = NO_FRINGE_BITMAP + 1; bt < max_used_fringe_bitmap; bt++) |
1849 | rif->destroy_fringe_bitmap (bt); | |
1850 | } | |
1851 | ||
1852 | #endif /* HAVE_NTGUI */ | |
1853 | ||
1854 | #endif /* HAVE_WINDOW_SYSTEM */ | |
1855 | ||
1856 | /* arch-tag: 04596920-43eb-473d-b319-82712338162d | |
1857 | (do not change this comment) */ |