Commit | Line | Data |
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2d05deef KS |
1 | /* Fringe handling (split from xdisp.c). |
2 | Copyright (C) 1985,86,87,88,93,94,95,97,98,99,2000,01,02,03,04 | |
3 | Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | #include <config.h> | |
23 | #include <stdio.h> | |
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" | |
31 | ||
32 | #ifdef HAVE_WINDOW_SYSTEM | |
33 | ||
7a2a85be | 34 | extern Lisp_Object Qfringe; |
2d05deef | 35 | extern Lisp_Object Qtop, Qbottom, Qcenter; |
5797a7a0 | 36 | extern Lisp_Object Qup, Qdown, Qleft, Qright; |
2d05deef KS |
37 | |
38 | /* Non-nil means that newline may flow into the right fringe. */ | |
39 | ||
40 | Lisp_Object Voverflow_newline_into_fringe; | |
41 | ||
7a2a85be KS |
42 | /* List of known fringe bitmap symbols. |
43 | ||
44 | The fringe bitmap number is stored in the `fringe' property on | |
45 | those symbols. Names for the built-in bitmaps are installed by | |
46 | loading fringe.el. | |
47 | */ | |
48 | ||
49 | Lisp_Object Vfringe_bitmaps; | |
2d05deef KS |
50 | |
51 | enum fringe_bitmap_type | |
52 | { | |
53 | NO_FRINGE_BITMAP = 0, | |
54 | UNDEF_FRINGE_BITMAP, | |
55 | LEFT_TRUNCATION_BITMAP, | |
56 | RIGHT_TRUNCATION_BITMAP, | |
57 | UP_ARROW_BITMAP, | |
58 | DOWN_ARROW_BITMAP, | |
59 | CONTINUED_LINE_BITMAP, | |
60 | CONTINUATION_LINE_BITMAP, | |
61 | OVERLAY_ARROW_BITMAP, | |
62 | TOP_LEFT_ANGLE_BITMAP, | |
63 | TOP_RIGHT_ANGLE_BITMAP, | |
64 | BOTTOM_LEFT_ANGLE_BITMAP, | |
65 | BOTTOM_RIGHT_ANGLE_BITMAP, | |
66 | LEFT_BRACKET_BITMAP, | |
67 | RIGHT_BRACKET_BITMAP, | |
68 | FILLED_BOX_CURSOR_BITMAP, | |
69 | HOLLOW_BOX_CURSOR_BITMAP, | |
70 | HOLLOW_SQUARE_BITMAP, | |
71 | BAR_CURSOR_BITMAP, | |
72 | HBAR_CURSOR_BITMAP, | |
73 | ZV_LINE_BITMAP, | |
74 | MAX_STANDARD_FRINGE_BITMAPS | |
75 | }; | |
76 | ||
77 | enum fringe_bitmap_align | |
78 | { | |
79 | ALIGN_BITMAP_CENTER = 0, | |
80 | ALIGN_BITMAP_TOP, | |
81 | ALIGN_BITMAP_BOTTOM | |
82 | }; | |
83 | ||
84 | struct fringe_bitmap | |
85 | { | |
0881a0fd | 86 | unsigned short *bits; |
2d05deef KS |
87 | unsigned height : 8; |
88 | unsigned width : 8; | |
89 | unsigned period : 8; | |
90 | unsigned align : 2; | |
91 | unsigned dynamic : 1; | |
92 | }; | |
93 | ||
94 | \f | |
95 | /*********************************************************************** | |
96 | Fringe bitmaps | |
97 | ***********************************************************************/ | |
98 | ||
99 | /* Undefined bitmap. A question mark. */ | |
100 | /* | |
101 | ..xxxx.. | |
102 | .xxxxxx. | |
103 | xx....xx | |
104 | xx....xx | |
105 | ....xx.. | |
106 | ...xx... | |
107 | ...xx... | |
108 | ........ | |
109 | ...xx... | |
110 | ...xx... | |
111 | */ | |
0881a0fd | 112 | static unsigned short unknown_bits[] = { |
2d05deef KS |
113 | 0x3c, 0x7e, 0x7e, 0x0c, 0x18, 0x18, 0x00, 0x18, 0x18}; |
114 | ||
115 | /* An arrow like this: `<-'. */ | |
116 | /* | |
117 | ...xx... | |
118 | ..xx.... | |
119 | .xx..... | |
120 | xxxxxx.. | |
121 | xxxxxx.. | |
122 | .xx..... | |
123 | ..xx.... | |
124 | ...xx... | |
125 | */ | |
0881a0fd | 126 | static unsigned short left_arrow_bits[] = { |
2d05deef KS |
127 | 0x18, 0x30, 0x60, 0xfc, 0xfc, 0x60, 0x30, 0x18}; |
128 | ||
129 | ||
130 | /* Right truncation arrow bitmap `->'. */ | |
131 | /* | |
132 | ...xx... | |
133 | ....xx.. | |
134 | .....xx. | |
135 | ..xxxxxx | |
136 | ..xxxxxx | |
137 | .....xx. | |
138 | ....xx.. | |
139 | ...xx... | |
140 | */ | |
0881a0fd | 141 | static unsigned short right_arrow_bits[] = { |
2d05deef KS |
142 | 0x18, 0x0c, 0x06, 0x3f, 0x3f, 0x06, 0x0c, 0x18}; |
143 | ||
144 | ||
145 | /* Up arrow bitmap. */ | |
146 | /* | |
147 | ...xx... | |
148 | ..xxxx.. | |
149 | .xxxxxx. | |
150 | xxxxxxxx | |
151 | ...xx... | |
152 | ...xx... | |
153 | ...xx... | |
154 | ...xx... | |
155 | */ | |
0881a0fd | 156 | static unsigned short up_arrow_bits[] = { |
2d05deef KS |
157 | 0x18, 0x3c, 0x7e, 0xff, 0x18, 0x18, 0x18, 0x18}; |
158 | ||
159 | ||
160 | /* Down arrow bitmap. */ | |
161 | /* | |
162 | ...xx... | |
163 | ...xx... | |
164 | ...xx... | |
165 | ...xx... | |
166 | xxxxxxxx | |
167 | .xxxxxx. | |
168 | ..xxxx.. | |
169 | ...xx... | |
170 | */ | |
0881a0fd | 171 | static unsigned short down_arrow_bits[] = { |
2d05deef KS |
172 | 0x18, 0x18, 0x18, 0x18, 0xff, 0x7e, 0x3c, 0x18}; |
173 | ||
174 | /* Marker for continued lines. */ | |
175 | /* | |
176 | ..xxxx.. | |
177 | ..xxxxx. | |
178 | ......xx | |
179 | ..x..xxx | |
180 | ..xxxxxx | |
181 | ..xxxxx. | |
182 | ..xxxx.. | |
183 | ..xxxxx. | |
184 | */ | |
0881a0fd | 185 | static unsigned short continued_bits[] = { |
2d05deef KS |
186 | 0x3c, 0x3e, 0x03, 0x27, 0x3f, 0x3e, 0x3c, 0x3e}; |
187 | ||
188 | /* Marker for continuation lines. */ | |
189 | /* | |
190 | ..xxxx.. | |
191 | .xxxxx.. | |
192 | xx...... | |
193 | xxx..x.. | |
194 | xxxxxx.. | |
195 | .xxxxx.. | |
196 | ..xxxx.. | |
197 | .xxxxx.. | |
198 | */ | |
0881a0fd | 199 | static unsigned short continuation_bits[] = { |
2d05deef KS |
200 | 0x3c, 0x7c, 0xc0, 0xe4, 0xfc, 0x7c, 0x3c, 0x7c}; |
201 | ||
202 | /* Overlay arrow bitmap. A triangular arrow. */ | |
203 | /* | |
204 | xx...... | |
205 | xxxx.... | |
206 | xxxxx... | |
207 | xxxxxx.. | |
208 | xxxxxx.. | |
209 | xxxxx... | |
210 | xxxx.... | |
211 | xx...... | |
212 | */ | |
0881a0fd | 213 | static unsigned short ov_bits[] = { |
2d05deef KS |
214 | 0xc0, 0xf0, 0xf8, 0xfc, 0xfc, 0xf8, 0xf0, 0xc0}; |
215 | ||
216 | #if 0 | |
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 | */ | |
0881a0fd | 228 | static unsigned short rev_ov_bits[] = { |
2d05deef KS |
229 | 0x03, 0x0f, 0x1f, 0x3f, 0x3f, 0x1f, 0x0f, 0x03}; |
230 | #endif | |
231 | ||
232 | /* First line bitmap. An top-left angle. */ | |
233 | /* | |
234 | xxxxxx.. | |
235 | xxxxxx.. | |
236 | xx...... | |
237 | xx...... | |
238 | xx...... | |
239 | xx...... | |
240 | xx...... | |
241 | ........ | |
242 | */ | |
0881a0fd | 243 | static unsigned short top_left_angle_bits[] = { |
2d05deef KS |
244 | 0xfc, 0xfc, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0x00}; |
245 | ||
246 | /* First line bitmap. An right-up angle. */ | |
247 | /* | |
248 | ..xxxxxx | |
249 | ..xxxxxx | |
250 | ......xx | |
251 | ......xx | |
252 | ......xx | |
253 | ......xx | |
254 | ......xx | |
255 | ........ | |
256 | */ | |
0881a0fd | 257 | static unsigned short top_right_angle_bits[] = { |
2d05deef KS |
258 | 0x3f, 0x3f, 0x03, 0x03, 0x03, 0x03, 0x03, 0x00}; |
259 | ||
260 | /* Last line bitmap. An left-down angle. */ | |
261 | /* | |
262 | ........ | |
263 | xx...... | |
264 | xx...... | |
265 | xx...... | |
266 | xx...... | |
267 | xx...... | |
268 | xxxxxx.. | |
269 | xxxxxx.. | |
270 | */ | |
0881a0fd | 271 | static unsigned short bottom_left_angle_bits[] = { |
2d05deef KS |
272 | 0x00, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xfc, 0xfc}; |
273 | ||
274 | /* Last line bitmap. An right-down angle. */ | |
275 | /* | |
276 | ........ | |
277 | ......xx | |
278 | ......xx | |
279 | ......xx | |
280 | ......xx | |
281 | ......xx | |
282 | ..xxxxxx | |
283 | ..xxxxxx | |
284 | */ | |
0881a0fd | 285 | static unsigned short bottom_right_angle_bits[] = { |
2d05deef KS |
286 | 0x00, 0x03, 0x03, 0x03, 0x03, 0x03, 0x3f, 0x3f}; |
287 | ||
288 | /* First/last line bitmap. An left bracket. */ | |
289 | /* | |
290 | xxxxxx.. | |
291 | xxxxxx.. | |
292 | xx...... | |
293 | xx...... | |
294 | xx...... | |
295 | xx...... | |
296 | xx...... | |
297 | xx...... | |
298 | xxxxxx.. | |
299 | xxxxxx.. | |
300 | */ | |
0881a0fd | 301 | static unsigned short left_bracket_bits[] = { |
2d05deef KS |
302 | 0xfc, 0xfc, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xfc, 0xfc}; |
303 | ||
304 | /* First/last line bitmap. An right bracket. */ | |
305 | /* | |
306 | ..xxxxxx | |
307 | ..xxxxxx | |
308 | ......xx | |
309 | ......xx | |
310 | ......xx | |
311 | ......xx | |
312 | ......xx | |
313 | ......xx | |
314 | ..xxxxxx | |
315 | ..xxxxxx | |
316 | */ | |
0881a0fd | 317 | static unsigned short right_bracket_bits[] = { |
2d05deef KS |
318 | 0x3f, 0x3f, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x3f, 0x3f}; |
319 | ||
320 | /* Filled box cursor bitmap. A filled box; max 13 pixels high. */ | |
321 | /* | |
322 | xxxxxxx. | |
323 | xxxxxxx. | |
324 | xxxxxxx. | |
325 | xxxxxxx. | |
326 | xxxxxxx. | |
327 | xxxxxxx. | |
328 | xxxxxxx. | |
329 | xxxxxxx. | |
330 | xxxxxxx. | |
331 | xxxxxxx. | |
332 | xxxxxxx. | |
333 | xxxxxxx. | |
334 | xxxxxxx. | |
335 | */ | |
0881a0fd | 336 | static unsigned short filled_box_cursor_bits[] = { |
2d05deef KS |
337 | 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe}; |
338 | ||
339 | /* Hollow box cursor bitmap. A hollow box; max 13 pixels high. */ | |
340 | /* | |
341 | xxxxxxx. | |
342 | x.....x. | |
343 | x.....x. | |
344 | x.....x. | |
345 | x.....x. | |
346 | x.....x. | |
347 | x.....x. | |
348 | x.....x. | |
349 | x.....x. | |
350 | x.....x. | |
351 | x.....x. | |
352 | x.....x. | |
353 | xxxxxxx. | |
354 | */ | |
0881a0fd | 355 | static unsigned short hollow_box_cursor_bits[] = { |
2d05deef KS |
356 | 0xfe, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0xfe}; |
357 | ||
358 | /* Bar cursor bitmap. A vertical bar; max 13 pixels high. */ | |
359 | /* | |
360 | xx...... | |
361 | xx...... | |
362 | xx...... | |
363 | xx...... | |
364 | xx...... | |
365 | xx...... | |
366 | xx...... | |
367 | xx...... | |
368 | xx...... | |
369 | xx...... | |
370 | xx...... | |
371 | xx...... | |
372 | xx...... | |
373 | */ | |
0881a0fd | 374 | static unsigned short bar_cursor_bits[] = { |
2d05deef KS |
375 | 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0}; |
376 | ||
377 | /* HBar cursor bitmap. A horisontal bar; 2 pixels high. */ | |
378 | /* | |
379 | xxxxxxx. | |
380 | xxxxxxx. | |
381 | */ | |
0881a0fd | 382 | static unsigned short hbar_cursor_bits[] = { |
2d05deef KS |
383 | 0xfe, 0xfe}; |
384 | ||
385 | ||
386 | /* Bitmap drawn to indicate lines not displaying text if | |
387 | `indicate-empty-lines' is non-nil. */ | |
388 | /* | |
389 | ........ | |
390 | ..xxxx.. | |
391 | ........ | |
392 | ........ | |
393 | ..xxxx.. | |
394 | ........ | |
395 | */ | |
0881a0fd | 396 | static unsigned short zv_bits[] = { |
2d05deef KS |
397 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, |
398 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
399 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
400 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
401 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
402 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
403 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
404 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00}; | |
405 | ||
406 | /* Hollow square bitmap. */ | |
407 | /* | |
408 | .xxxxxx. | |
409 | .x....x. | |
410 | .x....x. | |
411 | .x....x. | |
412 | .x....x. | |
413 | .xxxxxx. | |
414 | */ | |
0881a0fd | 415 | static unsigned short hollow_square_bits[] = { |
2d05deef KS |
416 | 0x7e, 0x42, 0x42, 0x42, 0x42, 0x7e}; |
417 | ||
418 | ||
0881a0fd KS |
419 | #define BYTES_PER_BITMAP_ROW (sizeof (unsigned short)) |
420 | #define STANDARD_BITMAP_HEIGHT(bits) (sizeof (bits)/BYTES_PER_BITMAP_ROW) | |
421 | #define FRBITS(bits) bits, STANDARD_BITMAP_HEIGHT (bits) | |
2d05deef | 422 | |
2d05deef KS |
423 | struct fringe_bitmap standard_bitmaps[MAX_STANDARD_FRINGE_BITMAPS] = |
424 | { | |
425 | { NULL, 0, 0, 0, 0, 0 }, /* NO_FRINGE_BITMAP */ | |
426 | { FRBITS (unknown_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
427 | { FRBITS (left_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
428 | { FRBITS (right_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
429 | { FRBITS (up_arrow_bits), 8, 0, ALIGN_BITMAP_TOP, 0 }, | |
430 | { FRBITS (down_arrow_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, | |
431 | { FRBITS (continued_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
432 | { FRBITS (continuation_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
433 | { FRBITS (ov_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
434 | { FRBITS (top_left_angle_bits), 8, 0, ALIGN_BITMAP_TOP, 0 }, | |
435 | { FRBITS (top_right_angle_bits), 8, 0, ALIGN_BITMAP_TOP, 0 }, | |
436 | { FRBITS (bottom_left_angle_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, | |
437 | { FRBITS (bottom_right_angle_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, | |
438 | { FRBITS (left_bracket_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
439 | { FRBITS (right_bracket_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
440 | { FRBITS (filled_box_cursor_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
441 | { FRBITS (hollow_box_cursor_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
442 | { FRBITS (hollow_square_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
443 | { FRBITS (bar_cursor_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
444 | { FRBITS (hbar_cursor_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, | |
445 | { FRBITS (zv_bits), 8, 3, ALIGN_BITMAP_TOP, 0 }, | |
446 | }; | |
447 | ||
448 | static struct fringe_bitmap *fringe_bitmaps[MAX_FRINGE_BITMAPS]; | |
449 | static unsigned fringe_faces[MAX_FRINGE_BITMAPS]; | |
450 | ||
451 | static int max_used_fringe_bitmap = MAX_STANDARD_FRINGE_BITMAPS; | |
452 | ||
453 | /* Return 1 if FRINGE_ID is a valid fringe bitmap id. */ | |
454 | ||
455 | int | |
7a2a85be KS |
456 | valid_fringe_bitmap_p (bitmap) |
457 | Lisp_Object bitmap; | |
458 | { | |
459 | int bn; | |
460 | ||
461 | if (!INTEGERP (bitmap)) | |
462 | return 0; | |
463 | ||
464 | bn = XINT (bitmap); | |
465 | return (bn >= NO_FRINGE_BITMAP | |
466 | && bn < max_used_fringe_bitmap | |
467 | && (bn < MAX_STANDARD_FRINGE_BITMAPS | |
468 | || fringe_bitmaps[bn] != NULL)); | |
469 | } | |
470 | ||
471 | /* Get fringe bitmap name for bitmap number BN. | |
472 | ||
473 | Found by traversing Vfringe_bitmaps comparing BN to the | |
474 | fringe property for each symbol. | |
475 | ||
476 | Return BN if not found in Vfringe_bitmaps. */ | |
477 | ||
478 | static Lisp_Object | |
479 | get_fringe_bitmap_name (bn) | |
480 | int bn; | |
481 | { | |
482 | Lisp_Object bitmaps; | |
483 | Lisp_Object num; | |
484 | ||
485 | /* Zero means no bitmap -- return nil. */ | |
486 | if (bn <= 0) | |
487 | return Qnil; | |
488 | ||
489 | bitmaps = Vfringe_bitmaps; | |
490 | num = make_number (bn); | |
491 | ||
492 | while (CONSP (bitmaps)) | |
493 | { | |
494 | Lisp_Object bitmap = XCAR (bitmaps); | |
495 | if (EQ (num, Fget (bitmap, Qfringe))) | |
496 | return bitmap; | |
497 | bitmaps = XCDR (bitmaps); | |
498 | } | |
499 | ||
500 | return num; | |
501 | } | |
502 | ||
503 | ||
504 | /* Resolve a BITMAP parameter. | |
505 | ||
506 | An INTEGER, corresponding to a bitmap number. | |
507 | A STRING which is interned to a symbol. | |
508 | A SYMBOL which has a fringe property which is a bitmap number. | |
509 | */ | |
510 | ||
511 | static int | |
512 | resolve_fringe_bitmap (bitmap, namep) | |
513 | Lisp_Object bitmap; | |
514 | Lisp_Object *namep; | |
2d05deef | 515 | { |
7a2a85be KS |
516 | if (namep) |
517 | *namep = Qnil; | |
518 | ||
519 | if (STRINGP (bitmap)) | |
520 | bitmap = intern (SDATA (bitmap)); | |
521 | ||
522 | if (SYMBOLP (bitmap)) | |
523 | { | |
524 | if (namep) | |
525 | *namep = bitmap; | |
526 | bitmap = Fget (bitmap, Qfringe); | |
527 | } | |
528 | ||
529 | if (valid_fringe_bitmap_p (bitmap)) | |
530 | { | |
531 | if (namep && NILP (*namep)) | |
532 | *namep = get_fringe_bitmap_name (XINT (bitmap)); | |
533 | return XINT (bitmap); | |
534 | } | |
535 | ||
536 | return -1; | |
2d05deef KS |
537 | } |
538 | ||
7a2a85be | 539 | |
2d05deef KS |
540 | /* Draw the bitmap WHICH in one of the left or right fringes of |
541 | window W. ROW is the glyph row for which to display the bitmap; it | |
542 | determines the vertical position at which the bitmap has to be | |
543 | drawn. | |
544 | LEFT_P is 1 for left fringe, 0 for right fringe. | |
545 | */ | |
546 | ||
547 | void | |
548 | draw_fringe_bitmap_1 (w, row, left_p, overlay, which) | |
549 | struct window *w; | |
550 | struct glyph_row *row; | |
551 | int left_p, overlay; | |
552 | enum fringe_bitmap_type which; | |
553 | { | |
554 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
555 | struct draw_fringe_bitmap_params p; | |
556 | struct fringe_bitmap *fb; | |
557 | int period; | |
558 | int face_id = DEFAULT_FACE_ID; | |
559 | ||
560 | p.cursor_p = 0; | |
561 | p.overlay_p = (overlay & 1) == 1; | |
562 | p.cursor_p = (overlay & 2) == 2; | |
563 | ||
564 | if (which != NO_FRINGE_BITMAP) | |
565 | { | |
566 | } | |
567 | else if (left_p) | |
568 | { | |
569 | which = row->left_fringe_bitmap; | |
570 | face_id = row->left_fringe_face_id; | |
571 | } | |
572 | else | |
573 | { | |
574 | which = row->right_fringe_bitmap; | |
575 | face_id = row->right_fringe_face_id; | |
576 | } | |
577 | ||
578 | if (face_id == DEFAULT_FACE_ID) | |
579 | face_id = fringe_faces[which]; | |
580 | ||
581 | fb = fringe_bitmaps[which]; | |
582 | if (fb == NULL) | |
583 | fb = &standard_bitmaps[which < MAX_STANDARD_FRINGE_BITMAPS | |
584 | ? which : UNDEF_FRINGE_BITMAP]; | |
585 | ||
586 | period = fb->period; | |
587 | ||
588 | /* Convert row to frame coordinates. */ | |
589 | p.y = WINDOW_TO_FRAME_PIXEL_Y (w, row->y); | |
590 | ||
591 | p.which = which; | |
592 | p.bits = fb->bits; | |
593 | p.wd = fb->width; | |
594 | ||
595 | p.h = fb->height; | |
596 | p.dh = (period > 0 ? (p.y % period) : 0); | |
597 | p.h -= p.dh; | |
598 | /* Clip bitmap if too high. */ | |
599 | if (p.h > row->height) | |
600 | p.h = row->height; | |
601 | ||
602 | p.face = FACE_FROM_ID (f, face_id); | |
603 | ||
604 | if (p.face == NULL) | |
605 | { | |
606 | /* Why does this happen? ++kfs */ | |
607 | return; | |
608 | } | |
609 | ||
610 | PREPARE_FACE_FOR_DISPLAY (f, p.face); | |
611 | ||
612 | /* Clear left fringe if no bitmap to draw or if bitmap doesn't fill | |
613 | the fringe. */ | |
614 | p.bx = -1; | |
615 | if (left_p) | |
616 | { | |
617 | int wd = WINDOW_LEFT_FRINGE_WIDTH (w); | |
618 | int x = window_box_left (w, (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
619 | ? LEFT_MARGIN_AREA | |
620 | : TEXT_AREA)); | |
621 | if (p.wd > wd) | |
622 | p.wd = wd; | |
623 | p.x = x - p.wd - (wd - p.wd) / 2; | |
624 | ||
625 | if (p.wd < wd || row->height > p.h) | |
626 | { | |
627 | /* If W has a vertical border to its left, don't draw over it. */ | |
628 | wd -= ((!WINDOW_LEFTMOST_P (w) | |
629 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) | |
630 | ? 1 : 0); | |
631 | p.bx = x - wd; | |
632 | p.nx = wd; | |
633 | } | |
634 | } | |
635 | else | |
636 | { | |
637 | int x = window_box_right (w, | |
638 | (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
639 | ? RIGHT_MARGIN_AREA | |
640 | : TEXT_AREA)); | |
641 | int wd = WINDOW_RIGHT_FRINGE_WIDTH (w); | |
642 | if (p.wd > wd) | |
643 | p.wd = wd; | |
644 | p.x = x + (wd - p.wd) / 2; | |
645 | /* Clear right fringe if no bitmap to draw of if bitmap doesn't fill | |
646 | the fringe. */ | |
647 | if (p.wd < wd || row->height > p.h) | |
648 | { | |
649 | p.bx = x; | |
650 | p.nx = wd; | |
651 | } | |
652 | } | |
653 | ||
654 | if (p.bx >= 0) | |
655 | { | |
656 | int header_line_height = WINDOW_HEADER_LINE_HEIGHT (w); | |
657 | ||
658 | p.by = WINDOW_TO_FRAME_PIXEL_Y (w, max (header_line_height, row->y)); | |
659 | p.ny = row->visible_height; | |
660 | } | |
661 | ||
662 | /* Adjust y to the offset in the row to start drawing the bitmap. */ | |
663 | switch (fb->align) | |
664 | { | |
665 | case ALIGN_BITMAP_CENTER: | |
666 | p.y += (row->height - p.h) / 2; | |
667 | break; | |
668 | case ALIGN_BITMAP_BOTTOM: | |
669 | p.h = fb->height; | |
670 | p.y += (row->visible_height - p.h); | |
671 | break; | |
672 | case ALIGN_BITMAP_TOP: | |
673 | break; | |
674 | } | |
675 | ||
676 | rif->draw_fringe_bitmap (w, row, &p); | |
677 | } | |
678 | ||
679 | void | |
680 | draw_fringe_bitmap (w, row, left_p) | |
681 | struct window *w; | |
682 | struct glyph_row *row; | |
683 | int left_p; | |
684 | { | |
685 | int overlay = 0; | |
686 | ||
687 | if (!left_p && row->cursor_in_fringe_p) | |
688 | { | |
689 | int cursor = NO_FRINGE_BITMAP; | |
690 | ||
691 | switch (w->phys_cursor_type) | |
692 | { | |
693 | case HOLLOW_BOX_CURSOR: | |
0881a0fd | 694 | if (row->visible_height >= STANDARD_BITMAP_HEIGHT (hollow_box_cursor_bits)) |
2d05deef KS |
695 | cursor = HOLLOW_BOX_CURSOR_BITMAP; |
696 | else | |
697 | cursor = HOLLOW_SQUARE_BITMAP; | |
698 | break; | |
699 | case FILLED_BOX_CURSOR: | |
700 | cursor = FILLED_BOX_CURSOR_BITMAP; | |
701 | break; | |
702 | case BAR_CURSOR: | |
703 | cursor = BAR_CURSOR_BITMAP; | |
704 | break; | |
705 | case HBAR_CURSOR: | |
706 | cursor = HBAR_CURSOR_BITMAP; | |
707 | break; | |
708 | case NO_CURSOR: | |
709 | default: | |
710 | w->phys_cursor_on_p = 0; | |
711 | row->cursor_in_fringe_p = 0; | |
712 | break; | |
713 | } | |
714 | if (cursor != NO_FRINGE_BITMAP) | |
715 | { | |
716 | draw_fringe_bitmap_1 (w, row, 0, 2, cursor); | |
717 | overlay = cursor == FILLED_BOX_CURSOR_BITMAP ? 3 : 1; | |
718 | } | |
719 | } | |
720 | ||
721 | draw_fringe_bitmap_1 (w, row, left_p, overlay, NO_FRINGE_BITMAP); | |
722 | ||
723 | if (left_p && row->overlay_arrow_p) | |
1c2a9e98 KS |
724 | draw_fringe_bitmap_1 (w, row, 1, 1, |
725 | (w->overlay_arrow_bitmap | |
726 | ? w->overlay_arrow_bitmap | |
727 | : OVERLAY_ARROW_BITMAP)); | |
2d05deef KS |
728 | } |
729 | ||
730 | ||
731 | /* Draw fringe bitmaps for glyph row ROW on window W. Call this | |
732 | function with input blocked. */ | |
733 | ||
734 | void | |
735 | draw_row_fringe_bitmaps (w, row) | |
736 | struct window *w; | |
737 | struct glyph_row *row; | |
738 | { | |
739 | xassert (interrupt_input_blocked); | |
740 | ||
741 | /* If row is completely invisible, because of vscrolling, we | |
742 | don't have to draw anything. */ | |
743 | if (row->visible_height <= 0) | |
744 | return; | |
745 | ||
746 | if (WINDOW_LEFT_FRINGE_WIDTH (w) != 0) | |
747 | draw_fringe_bitmap (w, row, 1); | |
748 | ||
749 | if (WINDOW_RIGHT_FRINGE_WIDTH (w) != 0) | |
750 | draw_fringe_bitmap (w, row, 0); | |
751 | } | |
752 | ||
753 | /* Draw the fringes of window W. Only fringes for rows marked for | |
754 | update in redraw_fringe_bitmaps_p are drawn. */ | |
755 | ||
756 | void | |
757 | draw_window_fringes (w) | |
758 | struct window *w; | |
759 | { | |
760 | struct glyph_row *row; | |
761 | int yb = window_text_bottom_y (w); | |
762 | int nrows = w->current_matrix->nrows; | |
763 | int y = 0, rn; | |
764 | ||
765 | if (w->pseudo_window_p) | |
766 | return; | |
767 | ||
768 | for (y = 0, rn = 0, row = w->current_matrix->rows; | |
769 | y < yb && rn < nrows; | |
770 | y += row->height, ++row, ++rn) | |
771 | { | |
772 | if (!row->redraw_fringe_bitmaps_p) | |
773 | continue; | |
774 | draw_row_fringe_bitmaps (w, row); | |
775 | row->redraw_fringe_bitmaps_p = 0; | |
776 | } | |
777 | } | |
778 | ||
779 | ||
780 | /* Recalculate the bitmaps to show in the fringes of window W. | |
781 | If FORCE_P is 0, only mark rows with modified bitmaps for update in | |
782 | redraw_fringe_bitmaps_p; else mark all rows for update. */ | |
783 | ||
784 | int | |
785 | update_window_fringes (w, force_p) | |
786 | struct window *w; | |
787 | int force_p; | |
788 | { | |
789 | struct glyph_row *row, *cur = 0; | |
790 | int yb = window_text_bottom_y (w); | |
791 | int rn, nrows = w->current_matrix->nrows; | |
792 | int y; | |
793 | int redraw_p = 0; | |
5797a7a0 KS |
794 | Lisp_Object boundary_top = Qnil, boundary_bot = Qnil; |
795 | Lisp_Object arrow_top = Qnil, arrow_bot = Qnil; | |
796 | Lisp_Object empty_pos; | |
797 | Lisp_Object ind = Qnil; | |
2d05deef KS |
798 | |
799 | if (w->pseudo_window_p) | |
800 | return 0; | |
801 | ||
802 | if (!MINI_WINDOW_P (w) | |
803 | && (ind = XBUFFER (w->buffer)->indicate_buffer_boundaries, !NILP (ind))) | |
804 | { | |
5797a7a0 KS |
805 | if (EQ (ind, Qleft) || EQ (ind, Qright)) |
806 | boundary_top = boundary_bot = arrow_top = arrow_bot = ind; | |
807 | else if (CONSP (ind) && CONSP (XCAR (ind))) | |
808 | { | |
809 | Lisp_Object pos; | |
810 | if (pos = Fassq (Qt, ind), !NILP (pos)) | |
811 | boundary_top = boundary_bot = arrow_top = arrow_bot = XCDR (pos); | |
812 | if (pos = Fassq (Qtop, ind), !NILP (pos)) | |
813 | boundary_top = XCDR (pos); | |
814 | if (pos = Fassq (Qbottom, ind), !NILP (pos)) | |
815 | boundary_bot = XCDR (pos); | |
816 | if (pos = Fassq (Qup, ind), !NILP (pos)) | |
817 | arrow_top = XCDR (pos); | |
818 | if (pos = Fassq (Qdown, ind), !NILP (pos)) | |
819 | arrow_bot = XCDR (pos); | |
820 | } | |
2d05deef | 821 | else |
5797a7a0 KS |
822 | ind = Qnil; |
823 | } | |
2d05deef | 824 | |
5797a7a0 KS |
825 | if (!NILP (ind)) |
826 | { | |
827 | int do_eob = 1, do_bob = 1; | |
2d05deef KS |
828 | |
829 | for (y = 0, rn = 0; | |
830 | y < yb && rn < nrows; | |
831 | y += row->height, ++rn) | |
832 | { | |
833 | unsigned indicate_bob_p, indicate_top_line_p; | |
834 | unsigned indicate_eob_p, indicate_bottom_line_p; | |
bffe8c26 | 835 | |
2d05deef KS |
836 | row = w->desired_matrix->rows + rn; |
837 | if (!row->enabled_p) | |
838 | row = w->current_matrix->rows + rn; | |
839 | ||
840 | indicate_bob_p = row->indicate_bob_p; | |
841 | indicate_top_line_p = row->indicate_top_line_p; | |
842 | indicate_eob_p = row->indicate_eob_p; | |
843 | indicate_bottom_line_p = row->indicate_bottom_line_p; | |
bffe8c26 | 844 | |
2d05deef KS |
845 | row->indicate_bob_p = row->indicate_top_line_p = 0; |
846 | row->indicate_eob_p = row->indicate_bottom_line_p = 0; | |
847 | ||
5797a7a0 | 848 | if (!NILP (boundary_top) |
2d05deef KS |
849 | && MATRIX_ROW_START_CHARPOS (row) <= BUF_BEGV (XBUFFER (w->buffer))) |
850 | row->indicate_bob_p = do_bob, do_bob = 0; | |
5797a7a0 | 851 | else if (!NILP (arrow_top) |
2d05deef KS |
852 | && (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0) == rn) |
853 | row->indicate_top_line_p = 1; | |
854 | ||
5797a7a0 | 855 | if (!NILP (boundary_bot) |
2d05deef KS |
856 | && MATRIX_ROW_END_CHARPOS (row) >= BUF_ZV (XBUFFER (w->buffer))) |
857 | row->indicate_eob_p = do_eob, do_eob = 0; | |
5797a7a0 | 858 | else if (!NILP (arrow_bot) |
2d05deef KS |
859 | && y + row->height >= yb) |
860 | row->indicate_bottom_line_p = 1; | |
861 | ||
862 | if (indicate_bob_p != row->indicate_bob_p | |
863 | || indicate_top_line_p != row->indicate_top_line_p | |
864 | || indicate_eob_p != row->indicate_eob_p | |
865 | || indicate_bottom_line_p != row->indicate_bottom_line_p) | |
866 | row->redraw_fringe_bitmaps_p = 1; | |
867 | } | |
868 | } | |
869 | ||
5797a7a0 KS |
870 | empty_pos = XBUFFER (w->buffer)->indicate_empty_lines; |
871 | if (!NILP (empty_pos) && !EQ (empty_pos, Qright)) | |
872 | empty_pos = WINDOW_LEFT_FRINGE_WIDTH (w) == 0 ? Qright : Qleft; | |
2d05deef KS |
873 | |
874 | for (y = 0, rn = 0; | |
875 | y < yb && rn < nrows; | |
876 | y += row->height, rn++) | |
877 | { | |
878 | enum fringe_bitmap_type left, right; | |
879 | unsigned left_face_id, right_face_id; | |
880 | ||
881 | row = w->desired_matrix->rows + rn; | |
882 | cur = w->current_matrix->rows + rn; | |
883 | if (!row->enabled_p) | |
884 | row = cur; | |
885 | ||
886 | left_face_id = right_face_id = DEFAULT_FACE_ID; | |
887 | ||
888 | /* Decide which bitmap to draw in the left fringe. */ | |
889 | if (WINDOW_LEFT_FRINGE_WIDTH (w) == 0) | |
890 | left = NO_FRINGE_BITMAP; | |
891 | else if (row->left_user_fringe_bitmap != NO_FRINGE_BITMAP) | |
892 | { | |
893 | left = row->left_user_fringe_bitmap; | |
894 | left_face_id = row->left_user_fringe_face_id; | |
895 | } | |
5797a7a0 KS |
896 | else if (row->indicate_bob_p && EQ (boundary_top, Qleft)) |
897 | left = ((row->indicate_eob_p && EQ (boundary_bot, Qleft)) | |
2d05deef | 898 | ? LEFT_BRACKET_BITMAP : TOP_LEFT_ANGLE_BITMAP); |
5797a7a0 | 899 | else if (row->indicate_eob_p && EQ (boundary_bot, Qleft)) |
2d05deef KS |
900 | left = BOTTOM_LEFT_ANGLE_BITMAP; |
901 | else if (row->truncated_on_left_p) | |
902 | left = LEFT_TRUNCATION_BITMAP; | |
903 | else if (MATRIX_ROW_CONTINUATION_LINE_P (row)) | |
904 | left = CONTINUATION_LINE_BITMAP; | |
5797a7a0 | 905 | else if (row->indicate_empty_line_p && EQ (empty_pos, Qleft)) |
2d05deef | 906 | left = ZV_LINE_BITMAP; |
5797a7a0 | 907 | else if (row->indicate_top_line_p && EQ (arrow_top, Qleft)) |
2d05deef | 908 | left = UP_ARROW_BITMAP; |
5797a7a0 | 909 | else if (row->indicate_bottom_line_p && EQ (arrow_bot, Qleft)) |
2d05deef KS |
910 | left = DOWN_ARROW_BITMAP; |
911 | else | |
912 | left = NO_FRINGE_BITMAP; | |
913 | ||
914 | /* Decide which bitmap to draw in the right fringe. */ | |
915 | if (WINDOW_RIGHT_FRINGE_WIDTH (w) == 0) | |
916 | right = NO_FRINGE_BITMAP; | |
917 | else if (row->right_user_fringe_bitmap != NO_FRINGE_BITMAP) | |
918 | { | |
919 | right = row->right_user_fringe_bitmap; | |
920 | right_face_id = row->right_user_fringe_face_id; | |
921 | } | |
5797a7a0 KS |
922 | else if (row->indicate_bob_p && EQ (boundary_top, Qright)) |
923 | right = ((row->indicate_eob_p && EQ (boundary_bot, Qright)) | |
2d05deef | 924 | ? RIGHT_BRACKET_BITMAP : TOP_RIGHT_ANGLE_BITMAP); |
5797a7a0 | 925 | else if (row->indicate_eob_p && EQ (boundary_bot, Qright)) |
2d05deef KS |
926 | right = BOTTOM_RIGHT_ANGLE_BITMAP; |
927 | else if (row->truncated_on_right_p) | |
928 | right = RIGHT_TRUNCATION_BITMAP; | |
929 | else if (row->continued_p) | |
930 | right = CONTINUED_LINE_BITMAP; | |
5797a7a0 | 931 | else if (row->indicate_top_line_p && EQ (arrow_top, Qright)) |
2d05deef | 932 | right = UP_ARROW_BITMAP; |
5797a7a0 | 933 | else if (row->indicate_bottom_line_p && EQ (arrow_bot, Qright)) |
2d05deef | 934 | right = DOWN_ARROW_BITMAP; |
5797a7a0 | 935 | else if (row->indicate_empty_line_p && EQ (empty_pos, Qright)) |
2d05deef KS |
936 | right = ZV_LINE_BITMAP; |
937 | else | |
938 | right = NO_FRINGE_BITMAP; | |
939 | ||
940 | if (force_p | |
941 | || row->y != cur->y | |
942 | || row->visible_height != cur->visible_height | |
943 | || left != cur->left_fringe_bitmap | |
944 | || right != cur->right_fringe_bitmap | |
945 | || left_face_id != cur->left_fringe_face_id | |
946 | || right_face_id != cur->right_fringe_face_id | |
947 | || cur->redraw_fringe_bitmaps_p) | |
948 | { | |
949 | redraw_p = row->redraw_fringe_bitmaps_p = cur->redraw_fringe_bitmaps_p = 1; | |
950 | cur->left_fringe_bitmap = left; | |
951 | cur->right_fringe_bitmap = right; | |
952 | cur->left_fringe_face_id = left_face_id; | |
953 | cur->right_fringe_face_id = right_face_id; | |
954 | } | |
955 | ||
956 | if (row->overlay_arrow_p != cur->overlay_arrow_p) | |
957 | { | |
958 | redraw_p = row->redraw_fringe_bitmaps_p = cur->redraw_fringe_bitmaps_p = 1; | |
959 | cur->overlay_arrow_p = row->overlay_arrow_p; | |
960 | } | |
961 | ||
962 | row->left_fringe_bitmap = left; | |
963 | row->right_fringe_bitmap = right; | |
964 | row->left_fringe_face_id = left_face_id; | |
965 | row->right_fringe_face_id = right_face_id; | |
966 | } | |
967 | ||
968 | return redraw_p; | |
969 | } | |
970 | ||
971 | ||
bffe8c26 | 972 | /* Compute actual fringe widths for frame F. |
2d05deef KS |
973 | |
974 | If REDRAW is 1, redraw F if the fringe settings was actually | |
975 | modified and F is visible. | |
976 | ||
977 | Since the combined left and right fringe must occupy an integral | |
978 | number of columns, we may need to add some pixels to each fringe. | |
979 | Typically, we add an equal amount (+/- 1 pixel) to each fringe, | |
980 | but a negative width value is taken literally (after negating it). | |
981 | ||
982 | We never make the fringes narrower than specified. It is planned | |
983 | to make fringe bitmaps customizable and expandable, and at that | |
984 | time, the user will typically specify the minimum number of pixels | |
985 | needed for his bitmaps, so we shouldn't select anything less than | |
986 | what is specified. | |
987 | */ | |
988 | ||
989 | void | |
990 | compute_fringe_widths (f, redraw) | |
991 | struct frame *f; | |
992 | int redraw; | |
993 | { | |
994 | int o_left = FRAME_LEFT_FRINGE_WIDTH (f); | |
995 | int o_right = FRAME_RIGHT_FRINGE_WIDTH (f); | |
996 | int o_cols = FRAME_FRINGE_COLS (f); | |
997 | ||
998 | Lisp_Object left_fringe = Fassq (Qleft_fringe, f->param_alist); | |
999 | Lisp_Object right_fringe = Fassq (Qright_fringe, f->param_alist); | |
1000 | int left_fringe_width, right_fringe_width; | |
1001 | ||
1002 | if (!NILP (left_fringe)) | |
1003 | left_fringe = Fcdr (left_fringe); | |
1004 | if (!NILP (right_fringe)) | |
1005 | right_fringe = Fcdr (right_fringe); | |
1006 | ||
1007 | left_fringe_width = ((NILP (left_fringe) || !INTEGERP (left_fringe)) ? 8 : | |
1008 | XINT (left_fringe)); | |
1009 | right_fringe_width = ((NILP (right_fringe) || !INTEGERP (right_fringe)) ? 8 : | |
1010 | XINT (right_fringe)); | |
1011 | ||
1012 | if (left_fringe_width || right_fringe_width) | |
1013 | { | |
1014 | int left_wid = left_fringe_width >= 0 ? left_fringe_width : -left_fringe_width; | |
1015 | int right_wid = right_fringe_width >= 0 ? right_fringe_width : -right_fringe_width; | |
1016 | int conf_wid = left_wid + right_wid; | |
1017 | int font_wid = FRAME_COLUMN_WIDTH (f); | |
1018 | int cols = (left_wid + right_wid + font_wid-1) / font_wid; | |
1019 | int real_wid = cols * font_wid; | |
1020 | if (left_wid && right_wid) | |
1021 | { | |
1022 | if (left_fringe_width < 0) | |
1023 | { | |
1024 | /* Left fringe width is fixed, adjust right fringe if necessary */ | |
1025 | FRAME_LEFT_FRINGE_WIDTH (f) = left_wid; | |
1026 | FRAME_RIGHT_FRINGE_WIDTH (f) = real_wid - left_wid; | |
1027 | } | |
1028 | else if (right_fringe_width < 0) | |
1029 | { | |
1030 | /* Right fringe width is fixed, adjust left fringe if necessary */ | |
1031 | FRAME_LEFT_FRINGE_WIDTH (f) = real_wid - right_wid; | |
1032 | FRAME_RIGHT_FRINGE_WIDTH (f) = right_wid; | |
1033 | } | |
1034 | else | |
1035 | { | |
1036 | /* Adjust both fringes with an equal amount. | |
1037 | Note that we are doing integer arithmetic here, so don't | |
1038 | lose a pixel if the total width is an odd number. */ | |
1039 | int fill = real_wid - conf_wid; | |
1040 | FRAME_LEFT_FRINGE_WIDTH (f) = left_wid + fill/2; | |
1041 | FRAME_RIGHT_FRINGE_WIDTH (f) = right_wid + fill - fill/2; | |
1042 | } | |
1043 | } | |
1044 | else if (left_fringe_width) | |
1045 | { | |
1046 | FRAME_LEFT_FRINGE_WIDTH (f) = real_wid; | |
1047 | FRAME_RIGHT_FRINGE_WIDTH (f) = 0; | |
1048 | } | |
1049 | else | |
1050 | { | |
1051 | FRAME_LEFT_FRINGE_WIDTH (f) = 0; | |
1052 | FRAME_RIGHT_FRINGE_WIDTH (f) = real_wid; | |
1053 | } | |
1054 | FRAME_FRINGE_COLS (f) = cols; | |
1055 | } | |
1056 | else | |
1057 | { | |
1058 | FRAME_LEFT_FRINGE_WIDTH (f) = 0; | |
1059 | FRAME_RIGHT_FRINGE_WIDTH (f) = 0; | |
1060 | FRAME_FRINGE_COLS (f) = 0; | |
1061 | } | |
1062 | ||
1063 | if (redraw && FRAME_VISIBLE_P (f)) | |
1064 | if (o_left != FRAME_LEFT_FRINGE_WIDTH (f) || | |
1065 | o_right != FRAME_RIGHT_FRINGE_WIDTH (f) || | |
1066 | o_cols != FRAME_FRINGE_COLS (f)) | |
1067 | redraw_frame (f); | |
1068 | } | |
1069 | ||
7a2a85be KS |
1070 | |
1071 | void | |
1072 | destroy_fringe_bitmap (n) | |
1073 | int n; | |
2d05deef | 1074 | { |
2d05deef KS |
1075 | struct fringe_bitmap **fbp; |
1076 | ||
2d05deef KS |
1077 | fringe_faces[n] = FRINGE_FACE_ID; |
1078 | ||
1079 | fbp = &fringe_bitmaps[n]; | |
1080 | if (*fbp && (*fbp)->dynamic) | |
1081 | { | |
1082 | if (rif->destroy_fringe_bitmap) | |
1083 | rif->destroy_fringe_bitmap (n); | |
1084 | xfree (*fbp); | |
1085 | *fbp = NULL; | |
1086 | } | |
1087 | ||
1088 | while (max_used_fringe_bitmap > MAX_STANDARD_FRINGE_BITMAPS | |
1089 | && fringe_bitmaps[max_used_fringe_bitmap - 1] == NULL) | |
1090 | max_used_fringe_bitmap--; | |
7a2a85be KS |
1091 | } |
1092 | ||
1093 | ||
1094 | DEFUN ("destroy-fringe-bitmap", Fdestroy_fringe_bitmap, Sdestroy_fringe_bitmap, | |
1095 | 1, 1, 0, | |
1096 | doc: /* Destroy fringe bitmap BITMAP. | |
1097 | If BITMAP overrides a standard fringe bitmap, the original bitmap is restored. */) | |
1098 | (bitmap) | |
1099 | Lisp_Object bitmap; | |
1100 | { | |
1101 | int n; | |
1102 | Lisp_Object sym; | |
1103 | ||
1104 | n = resolve_fringe_bitmap (bitmap, &sym); | |
1105 | if (n < 0) | |
1106 | return Qnil; | |
1107 | ||
1108 | destroy_fringe_bitmap (n); | |
2d05deef | 1109 | |
7a2a85be KS |
1110 | if (SYMBOLP (sym)) |
1111 | { | |
1112 | Vfringe_bitmaps = Fdelq (sym, Vfringe_bitmaps); | |
1113 | /* It would be better to remove the fringe property. */ | |
1114 | Fput (sym, Qfringe, Qnil); | |
1115 | } | |
2d05deef KS |
1116 | return Qnil; |
1117 | } | |
1118 | ||
1119 | ||
1120 | /* Initialize bitmap bit. | |
0881a0fd KS |
1121 | |
1122 | On X, we bit-swap the built-in bitmaps and reduce bitmap | |
1123 | from short to char array if width is <= 8 bits. | |
1124 | ||
bd231131 KS |
1125 | On MAC with big-endian CPU, we need to byte-swap each short. |
1126 | ||
1127 | On W32 and MAC (little endian), there's no need to do this. | |
2d05deef KS |
1128 | */ |
1129 | ||
1130 | void | |
1131 | init_fringe_bitmap (which, fb, once_p) | |
1132 | enum fringe_bitmap_type which; | |
1133 | struct fringe_bitmap *fb; | |
1134 | int once_p; | |
1135 | { | |
1136 | if (once_p || fb->dynamic) | |
1137 | { | |
0881a0fd KS |
1138 | #if defined (HAVE_X_WINDOWS) |
1139 | static unsigned char swap_nibble[16] | |
1140 | = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */ | |
1141 | 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */ | |
1142 | 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */ | |
bd231131 | 1143 | 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */ |
0881a0fd | 1144 | unsigned short *bits = fb->bits; |
2d05deef | 1145 | int j; |
0881a0fd KS |
1146 | |
1147 | if (fb->width <= 8) | |
1148 | { | |
1149 | unsigned char *cbits = (unsigned char *)fb->bits; | |
1150 | for (j = 0; j < fb->height; j++) | |
1151 | { | |
1152 | unsigned short b = *bits++; | |
1153 | unsigned char c; | |
1154 | c = (unsigned char)((swap_nibble[b & 0xf] << 4) | |
1155 | | (swap_nibble[(b>>4) & 0xf])); | |
1156 | *cbits++ = (c >> (8 - fb->width)); | |
1157 | } | |
1158 | } | |
1159 | else | |
2d05deef | 1160 | { |
0881a0fd KS |
1161 | for (j = 0; j < fb->height; j++) |
1162 | { | |
1163 | unsigned short b = *bits; | |
1164 | b = (unsigned short)((swap_nibble[b & 0xf] << 12) | |
1165 | | (swap_nibble[(b>>4) & 0xf] << 8) | |
1166 | | (swap_nibble[(b>>8) & 0xf] << 4) | |
1167 | | (swap_nibble[(b>>12) & 0xf])); | |
1168 | *bits++ = (b >> (16 - fb->width)); | |
1169 | } | |
2d05deef | 1170 | } |
bd231131 KS |
1171 | #endif /* HAVE_X_WINDOWS */ |
1172 | ||
1173 | #if defined (MAC_OS) && defined (WORDS_BIG_ENDIAN) | |
1174 | unsigned short *bits = fb->bits; | |
159c348e | 1175 | int j; |
bd231131 KS |
1176 | for (j = 0; j < fb->height; j++) |
1177 | { | |
1178 | unsigned short b = *bits; | |
1179 | *bits++ = ((b >> 8) & 0xff) | ((b & 0xff) << 8); | |
1180 | } | |
1181 | #endif /* MAC_OS && WORDS_BIG_ENDIAN */ | |
2d05deef KS |
1182 | } |
1183 | ||
1184 | if (!once_p) | |
1185 | { | |
7a2a85be | 1186 | destroy_fringe_bitmap (which); |
2d05deef KS |
1187 | |
1188 | if (rif->define_fringe_bitmap) | |
1189 | rif->define_fringe_bitmap (which, fb->bits, fb->height, fb->width); | |
1190 | ||
1191 | fringe_bitmaps[which] = fb; | |
1192 | if (which >= max_used_fringe_bitmap) | |
1193 | max_used_fringe_bitmap = which + 1; | |
1194 | } | |
1195 | } | |
1196 | ||
1197 | ||
1198 | DEFUN ("define-fringe-bitmap", Fdefine_fringe_bitmap, Sdefine_fringe_bitmap, | |
7a2a85be KS |
1199 | 2, 5, 0, |
1200 | doc: /* Define fringe bitmap BITMAP from BITS of size HEIGHT x WIDTH. | |
1201 | BITMAP is a symbol or string naming the new fringe bitmap. | |
0881a0fd KS |
1202 | BITS is either a string or a vector of integers. |
1203 | HEIGHT is height of bitmap. If HEIGHT is nil, use length of BITS. | |
1204 | WIDTH must be an integer between 1 and 16, or nil which defaults to 8. | |
7a2a85be | 1205 | Optional fifth arg ALIGN may be one of `top', `center', or `bottom', |
0881a0fd KS |
1206 | indicating the positioning of the bitmap relative to the rows where it |
1207 | is used; the default is to center the bitmap. Fourth arg may also be a | |
1208 | list (ALIGN PERIODIC) where PERIODIC non-nil specifies that the bitmap | |
1209 | should be repeated. | |
7a2a85be KS |
1210 | If BITMAP already exists, the existing definition is replaced. */) |
1211 | (bitmap, bits, height, width, align) | |
1212 | Lisp_Object bitmap, bits, height, width, align; | |
2d05deef KS |
1213 | { |
1214 | Lisp_Object len; | |
1215 | int n, h, i, j; | |
0881a0fd | 1216 | unsigned short *b; |
2d05deef KS |
1217 | struct fringe_bitmap fb, *xfb; |
1218 | int fill1 = 0, fill2 = 0; | |
7a2a85be KS |
1219 | Lisp_Object sym; |
1220 | ||
1221 | n = resolve_fringe_bitmap (bitmap, &sym); | |
1222 | ||
1223 | if (NILP (sym) || INTEGERP (sym)) | |
1224 | sym = wrong_type_argument (Qsymbolp, bitmap); | |
2d05deef KS |
1225 | |
1226 | if (!STRINGP (bits) && !VECTORP (bits)) | |
1227 | bits = wrong_type_argument (Qstringp, bits); | |
1228 | ||
1229 | len = Flength (bits); | |
1230 | ||
1231 | if (NILP (height)) | |
1232 | h = fb.height = XINT (len); | |
1233 | else | |
1234 | { | |
1235 | CHECK_NUMBER (height); | |
1236 | fb.height = min (XINT (height), 255); | |
1237 | if (fb.height > XINT (len)) | |
1238 | { | |
1239 | h = XINT (len); | |
1240 | fill1 = (fb.height - h) / 2; | |
1241 | fill2 = fb.height - h - fill1; | |
1242 | } | |
1243 | } | |
bffe8c26 | 1244 | |
2d05deef KS |
1245 | if (NILP (width)) |
1246 | fb.width = 8; | |
1247 | else | |
1248 | { | |
1249 | CHECK_NUMBER (width); | |
1250 | fb.width = min (XINT (width), 255); | |
1251 | } | |
1252 | ||
1253 | fb.period = 0; | |
1254 | fb.align = ALIGN_BITMAP_CENTER; | |
1255 | ||
1256 | if (CONSP (align)) | |
1257 | { | |
1258 | Lisp_Object period = XCDR (align); | |
1259 | if (CONSP (period)) | |
1260 | { | |
1261 | period = XCAR (period); | |
1262 | if (!NILP (period)) | |
1263 | { | |
1264 | fb.period = fb.height; | |
1265 | fb.height = 255; | |
1266 | } | |
1267 | } | |
1268 | align = XCAR (align); | |
1269 | } | |
1270 | if (EQ (align, Qtop)) | |
1271 | fb.align = ALIGN_BITMAP_TOP; | |
1272 | else if (EQ (align, Qbottom)) | |
1273 | fb.align = ALIGN_BITMAP_BOTTOM; | |
1274 | else if (!NILP (align) && !EQ (align, Qcenter)) | |
1275 | error ("Bad align argument"); | |
1276 | ||
7a2a85be | 1277 | if (n < 0) |
2d05deef KS |
1278 | { |
1279 | if (max_used_fringe_bitmap < MAX_FRINGE_BITMAPS) | |
d2f14999 | 1280 | n = max_used_fringe_bitmap++; |
2d05deef KS |
1281 | else |
1282 | { | |
1283 | for (n = MAX_STANDARD_FRINGE_BITMAPS; | |
1284 | n < MAX_FRINGE_BITMAPS; | |
1285 | n++) | |
1286 | if (fringe_bitmaps[n] == NULL) | |
1287 | break; | |
1288 | if (n == MAX_FRINGE_BITMAPS) | |
7a2a85be | 1289 | error ("Cannot define more fringe bitmaps"); |
2d05deef | 1290 | } |
7a2a85be KS |
1291 | |
1292 | Vfringe_bitmaps = Fcons (sym, Vfringe_bitmaps); | |
1293 | Fput (sym, Qfringe, make_number (n)); | |
2d05deef KS |
1294 | } |
1295 | ||
1296 | fb.dynamic = 1; | |
1297 | ||
beaedd56 AS |
1298 | xfb = (struct fringe_bitmap *) xmalloc (sizeof fb |
1299 | + fb.height * BYTES_PER_BITMAP_ROW); | |
1300 | fb.bits = b = (unsigned short *) (xfb + 1); | |
2d05deef KS |
1301 | bzero (b, fb.height); |
1302 | ||
1303 | j = 0; | |
1304 | while (j < fb.height) | |
1305 | { | |
1306 | for (i = 0; i < fill1 && j < fb.height; i++) | |
1307 | b[j++] = 0; | |
beaedd56 | 1308 | for (i = 0; i < h && j < fb.height; i++) |
2d05deef KS |
1309 | { |
1310 | Lisp_Object elt = Faref (bits, make_number (i)); | |
1311 | b[j++] = NUMBERP (elt) ? XINT (elt) : 0; | |
1312 | } | |
1313 | for (i = 0; i < fill2 && j < fb.height; i++) | |
1314 | b[j++] = 0; | |
1315 | } | |
1316 | ||
1317 | *xfb = fb; | |
1318 | ||
1319 | init_fringe_bitmap (n, xfb, 0); | |
1320 | ||
7a2a85be | 1321 | return sym; |
2d05deef KS |
1322 | } |
1323 | ||
1324 | DEFUN ("set-fringe-bitmap-face", Fset_fringe_bitmap_face, Sset_fringe_bitmap_face, | |
1325 | 1, 2, 0, | |
7a2a85be | 1326 | doc: /* Set face for fringe bitmap BITMAP to FACE. |
2d05deef | 1327 | If FACE is nil, reset face to default fringe face. */) |
7a2a85be KS |
1328 | (bitmap, face) |
1329 | Lisp_Object bitmap, face; | |
2d05deef | 1330 | { |
7a2a85be | 1331 | int bn; |
2d05deef KS |
1332 | int face_id; |
1333 | ||
7a2a85be KS |
1334 | bn = resolve_fringe_bitmap (bitmap, 0); |
1335 | if (bn < 0) | |
1336 | error ("Undefined fringe bitmap"); | |
2d05deef KS |
1337 | |
1338 | if (!NILP (face)) | |
1339 | { | |
1340 | face_id = lookup_named_face (SELECTED_FRAME (), face, 'A'); | |
1341 | if (face_id < 0) | |
1342 | error ("No such face"); | |
1343 | } | |
1344 | else | |
1345 | face_id = FRINGE_FACE_ID; | |
1346 | ||
7a2a85be | 1347 | fringe_faces [bn] = face_id; |
2d05deef KS |
1348 | |
1349 | return Qnil; | |
1350 | } | |
1351 | ||
1352 | DEFUN ("fringe-bitmaps-at-pos", Ffringe_bitmaps_at_pos, Sfringe_bitmaps_at_pos, | |
1353 | 0, 2, 0, | |
bffe8c26 | 1354 | doc: /* Return fringe bitmaps of row containing position POS in window WINDOW. |
2d05deef KS |
1355 | If WINDOW is nil, use selected window. If POS is nil, use value of point |
1356 | in that window. Return value is a cons (LEFT . RIGHT) where LEFT and RIGHT | |
1357 | are the fringe bitmap numbers for the bitmaps in the left and right fringe, | |
5797a7a0 KS |
1358 | resp. If left or right fringe is empty, the corresponding element is nil. |
1359 | Return nil if POS is not visible in WINDOW. */) | |
2d05deef | 1360 | (pos, window) |
d30b6b33 | 1361 | Lisp_Object pos, window; |
2d05deef KS |
1362 | { |
1363 | struct window *w; | |
1364 | struct buffer *old_buffer = NULL; | |
1365 | struct glyph_row *row; | |
1366 | int textpos; | |
1367 | ||
1368 | if (NILP (window)) | |
1369 | window = selected_window; | |
1370 | CHECK_WINDOW (window); | |
1371 | w = XWINDOW (window); | |
1372 | ||
1373 | if (!NILP (pos)) | |
1374 | { | |
1375 | CHECK_NUMBER_COERCE_MARKER (pos); | |
1376 | textpos = XINT (pos); | |
1377 | } | |
1378 | else if (w == XWINDOW (selected_window)) | |
1379 | textpos = PT; | |
1380 | else | |
1381 | textpos = XMARKER (w->pointm)->charpos; | |
1382 | ||
1383 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
1384 | row = row_containing_pos (w, textpos, row, NULL, 0); | |
1385 | if (row) | |
7a2a85be KS |
1386 | return Fcons (get_fringe_bitmap_name (row->left_fringe_bitmap), |
1387 | get_fringe_bitmap_name (row->right_fringe_bitmap)); | |
2d05deef KS |
1388 | else |
1389 | return Qnil; | |
1390 | } | |
1391 | ||
1392 | ||
1393 | /*********************************************************************** | |
1394 | Initialization | |
1395 | ***********************************************************************/ | |
1396 | ||
1397 | void | |
1398 | syms_of_fringe () | |
1399 | { | |
2d05deef KS |
1400 | defsubr (&Sdestroy_fringe_bitmap); |
1401 | defsubr (&Sdefine_fringe_bitmap); | |
1402 | defsubr (&Sfringe_bitmaps_at_pos); | |
1403 | defsubr (&Sset_fringe_bitmap_face); | |
1404 | ||
1405 | DEFVAR_LISP ("overflow-newline-into-fringe", &Voverflow_newline_into_fringe, | |
1406 | doc: /* *Non-nil means that newline may flow into the right fringe. | |
1407 | This means that display lines which are exactly as wide as the window | |
1408 | (not counting the final newline) will only occupy one screen line, by | |
1409 | showing (or hiding) the final newline in the right fringe; when point | |
1410 | is at the final newline, the cursor is shown in the right fringe. | |
1411 | If nil, also continue lines which are exactly as wide as the window. */); | |
1412 | Voverflow_newline_into_fringe = Qt; | |
1413 | ||
7a2a85be KS |
1414 | DEFVAR_LISP ("fringe-bitmaps", &Vfringe_bitmaps, |
1415 | doc: /* List of fringe bitmap symbols. | |
1416 | You must (require 'fringe) to use fringe bitmap symbols in your programs." */); | |
1417 | Vfringe_bitmaps = Qnil; | |
2d05deef KS |
1418 | } |
1419 | ||
1420 | /* Initialize this module when Emacs starts. */ | |
1421 | ||
1422 | void | |
1423 | init_fringe_once () | |
1424 | { | |
1425 | enum fringe_bitmap_type bt; | |
1426 | ||
1427 | for (bt = NO_FRINGE_BITMAP + 1; bt < MAX_STANDARD_FRINGE_BITMAPS; bt++) | |
1428 | init_fringe_bitmap(bt, &standard_bitmaps[bt], 1); | |
1429 | } | |
1430 | ||
1431 | void | |
1432 | init_fringe () | |
1433 | { | |
1434 | int i; | |
1435 | ||
1436 | bzero (fringe_bitmaps, sizeof fringe_bitmaps); | |
1437 | for (i = 0; i < MAX_FRINGE_BITMAPS; i++) | |
1438 | fringe_faces[i] = FRINGE_FACE_ID; | |
1439 | } | |
1440 | ||
1441 | #ifdef HAVE_NTGUI | |
1442 | ||
1443 | void | |
1444 | w32_init_fringe () | |
1445 | { | |
1446 | enum fringe_bitmap_type bt; | |
1447 | ||
1448 | for (bt = NO_FRINGE_BITMAP + 1; bt < MAX_STANDARD_FRINGE_BITMAPS; bt++) | |
1449 | { | |
1450 | struct fringe_bitmap *fb = &standard_bitmaps[bt]; | |
1451 | rif->define_fringe_bitmap (bt, fb->bits, fb->height, fb->width); | |
1452 | } | |
1453 | } | |
1454 | ||
1455 | void | |
1456 | w32_reset_fringes () | |
1457 | { | |
1458 | /* Destroy row bitmaps. */ | |
1459 | int bt; | |
bffe8c26 | 1460 | |
2d05deef KS |
1461 | for (bt = NO_FRINGE_BITMAP + 1; bt < max_used_fringe_bitmap; bt++) |
1462 | rif->destroy_fringe_bitmap (bt); | |
1463 | } | |
1464 | ||
bd231131 | 1465 | #endif /* HAVE_NTGUI */ |
2d05deef KS |
1466 | |
1467 | #endif /* HAVE_WINDOW_SYSTEM */ | |
1468 | ||
429e7e2d MB |
1469 | /* arch-tag: 04596920-43eb-473d-b319-82712338162d |
1470 | (do not change this comment) */ |