Commit | Line | Data |
---|---|---|
6b61353c KH |
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; |
6b61353c | 35 | extern Lisp_Object Qtop, Qbottom, Qcenter; |
5797a7a0 | 36 | extern Lisp_Object Qup, Qdown, Qleft, Qright; |
6b61353c KH |
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; | |
6b61353c KH |
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 | { | |
86 | unsigned short *bits; | |
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 | */ | |
112 | static unsigned short unknown_bits[] = { | |
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 | */ | |
126 | static unsigned short left_arrow_bits[] = { | |
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 | */ | |
141 | static unsigned short right_arrow_bits[] = { | |
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 | */ | |
156 | static unsigned short up_arrow_bits[] = { | |
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 | */ | |
171 | static unsigned short down_arrow_bits[] = { | |
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 | */ | |
185 | static unsigned short continued_bits[] = { | |
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 | */ | |
199 | static unsigned short continuation_bits[] = { | |
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 | */ | |
213 | static unsigned short ov_bits[] = { | |
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 | */ | |
228 | static unsigned short rev_ov_bits[] = { | |
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 | */ | |
243 | static unsigned short top_left_angle_bits[] = { | |
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 | */ | |
257 | static unsigned short top_right_angle_bits[] = { | |
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 | */ | |
271 | static unsigned short bottom_left_angle_bits[] = { | |
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 | */ | |
285 | static unsigned short bottom_right_angle_bits[] = { | |
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 | */ | |
301 | static unsigned short left_bracket_bits[] = { | |
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 | */ | |
317 | static unsigned short right_bracket_bits[] = { | |
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 | */ | |
336 | static unsigned short filled_box_cursor_bits[] = { | |
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 | */ | |
355 | static unsigned short hollow_box_cursor_bits[] = { | |
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 | */ | |
374 | static unsigned short bar_cursor_bits[] = { | |
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 | */ | |
382 | static unsigned short hbar_cursor_bits[] = { | |
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 | */ | |
396 | static unsigned short zv_bits[] = { | |
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 | */ | |
415 | static unsigned short hollow_square_bits[] = { | |
416 | 0x7e, 0x42, 0x42, 0x42, 0x42, 0x7e}; | |
417 | ||
418 | ||
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) | |
422 | ||
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 | ||
ad67849e KS |
448 | static struct fringe_bitmap **fringe_bitmaps; |
449 | static unsigned *fringe_faces; | |
450 | static int max_fringe_bitmaps; | |
6b61353c KH |
451 | |
452 | static int max_used_fringe_bitmap = MAX_STANDARD_FRINGE_BITMAPS; | |
453 | ||
4cce0ab7 KS |
454 | |
455 | /* Lookup bitmap number for symbol BITMAP. | |
456 | Return 0 if not a bitmap. */ | |
6b61353c KH |
457 | |
458 | int | |
4cce0ab7 | 459 | lookup_fringe_bitmap (bitmap) |
7a2a85be KS |
460 | Lisp_Object bitmap; |
461 | { | |
462 | int bn; | |
463 | ||
4cce0ab7 | 464 | bitmap = Fget (bitmap, Qfringe); |
7a2a85be KS |
465 | if (!INTEGERP (bitmap)) |
466 | return 0; | |
467 | ||
468 | bn = XINT (bitmap); | |
4cce0ab7 KS |
469 | if (bn > NO_FRINGE_BITMAP |
470 | && bn < max_used_fringe_bitmap | |
471 | && (bn < MAX_STANDARD_FRINGE_BITMAPS | |
472 | || fringe_bitmaps[bn] != NULL)) | |
473 | return bn; | |
474 | ||
475 | return 0; | |
7a2a85be KS |
476 | } |
477 | ||
478 | /* Get fringe bitmap name for bitmap number BN. | |
479 | ||
480 | Found by traversing Vfringe_bitmaps comparing BN to the | |
481 | fringe property for each symbol. | |
482 | ||
483 | Return BN if not found in Vfringe_bitmaps. */ | |
484 | ||
485 | static Lisp_Object | |
486 | get_fringe_bitmap_name (bn) | |
487 | int bn; | |
488 | { | |
489 | Lisp_Object bitmaps; | |
490 | Lisp_Object num; | |
491 | ||
492 | /* Zero means no bitmap -- return nil. */ | |
493 | if (bn <= 0) | |
494 | return Qnil; | |
495 | ||
496 | bitmaps = Vfringe_bitmaps; | |
497 | num = make_number (bn); | |
498 | ||
499 | while (CONSP (bitmaps)) | |
500 | { | |
501 | Lisp_Object bitmap = XCAR (bitmaps); | |
502 | if (EQ (num, Fget (bitmap, Qfringe))) | |
503 | return bitmap; | |
504 | bitmaps = XCDR (bitmaps); | |
505 | } | |
506 | ||
507 | return num; | |
508 | } | |
509 | ||
510 | ||
6b61353c KH |
511 | /* Draw the bitmap WHICH in one of the left or right fringes of |
512 | window W. ROW is the glyph row for which to display the bitmap; it | |
513 | determines the vertical position at which the bitmap has to be | |
514 | drawn. | |
515 | LEFT_P is 1 for left fringe, 0 for right fringe. | |
516 | */ | |
517 | ||
518 | void | |
519 | draw_fringe_bitmap_1 (w, row, left_p, overlay, which) | |
520 | struct window *w; | |
521 | struct glyph_row *row; | |
522 | int left_p, overlay; | |
523 | enum fringe_bitmap_type which; | |
524 | { | |
525 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
526 | struct draw_fringe_bitmap_params p; | |
527 | struct fringe_bitmap *fb; | |
528 | int period; | |
529 | int face_id = DEFAULT_FACE_ID; | |
530 | ||
531 | p.cursor_p = 0; | |
532 | p.overlay_p = (overlay & 1) == 1; | |
533 | p.cursor_p = (overlay & 2) == 2; | |
534 | ||
535 | if (which != NO_FRINGE_BITMAP) | |
536 | { | |
537 | } | |
538 | else if (left_p) | |
539 | { | |
540 | which = row->left_fringe_bitmap; | |
541 | face_id = row->left_fringe_face_id; | |
542 | } | |
543 | else | |
544 | { | |
545 | which = row->right_fringe_bitmap; | |
546 | face_id = row->right_fringe_face_id; | |
547 | } | |
548 | ||
549 | if (face_id == DEFAULT_FACE_ID) | |
550 | face_id = fringe_faces[which]; | |
551 | ||
552 | fb = fringe_bitmaps[which]; | |
553 | if (fb == NULL) | |
554 | fb = &standard_bitmaps[which < MAX_STANDARD_FRINGE_BITMAPS | |
555 | ? which : UNDEF_FRINGE_BITMAP]; | |
556 | ||
557 | period = fb->period; | |
558 | ||
559 | /* Convert row to frame coordinates. */ | |
560 | p.y = WINDOW_TO_FRAME_PIXEL_Y (w, row->y); | |
561 | ||
562 | p.which = which; | |
563 | p.bits = fb->bits; | |
564 | p.wd = fb->width; | |
565 | ||
566 | p.h = fb->height; | |
567 | p.dh = (period > 0 ? (p.y % period) : 0); | |
568 | p.h -= p.dh; | |
569 | /* Clip bitmap if too high. */ | |
570 | if (p.h > row->height) | |
571 | p.h = row->height; | |
572 | ||
573 | p.face = FACE_FROM_ID (f, face_id); | |
574 | ||
575 | if (p.face == NULL) | |
576 | { | |
577 | /* Why does this happen? ++kfs */ | |
578 | return; | |
579 | } | |
580 | ||
581 | PREPARE_FACE_FOR_DISPLAY (f, p.face); | |
582 | ||
583 | /* Clear left fringe if no bitmap to draw or if bitmap doesn't fill | |
584 | the fringe. */ | |
585 | p.bx = -1; | |
586 | if (left_p) | |
587 | { | |
588 | int wd = WINDOW_LEFT_FRINGE_WIDTH (w); | |
589 | int x = window_box_left (w, (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
590 | ? LEFT_MARGIN_AREA | |
591 | : TEXT_AREA)); | |
592 | if (p.wd > wd) | |
593 | p.wd = wd; | |
594 | p.x = x - p.wd - (wd - p.wd) / 2; | |
595 | ||
596 | if (p.wd < wd || row->height > p.h) | |
597 | { | |
598 | /* If W has a vertical border to its left, don't draw over it. */ | |
599 | wd -= ((!WINDOW_LEFTMOST_P (w) | |
600 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) | |
601 | ? 1 : 0); | |
602 | p.bx = x - wd; | |
603 | p.nx = wd; | |
604 | } | |
605 | } | |
606 | else | |
607 | { | |
608 | int x = window_box_right (w, | |
609 | (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
610 | ? RIGHT_MARGIN_AREA | |
611 | : TEXT_AREA)); | |
612 | int wd = WINDOW_RIGHT_FRINGE_WIDTH (w); | |
613 | if (p.wd > wd) | |
614 | p.wd = wd; | |
615 | p.x = x + (wd - p.wd) / 2; | |
616 | /* Clear right fringe if no bitmap to draw of if bitmap doesn't fill | |
617 | the fringe. */ | |
618 | if (p.wd < wd || row->height > p.h) | |
619 | { | |
620 | p.bx = x; | |
621 | p.nx = wd; | |
622 | } | |
623 | } | |
624 | ||
625 | if (p.bx >= 0) | |
626 | { | |
627 | int header_line_height = WINDOW_HEADER_LINE_HEIGHT (w); | |
628 | ||
629 | p.by = WINDOW_TO_FRAME_PIXEL_Y (w, max (header_line_height, row->y)); | |
630 | p.ny = row->visible_height; | |
631 | } | |
632 | ||
633 | /* Adjust y to the offset in the row to start drawing the bitmap. */ | |
634 | switch (fb->align) | |
635 | { | |
636 | case ALIGN_BITMAP_CENTER: | |
637 | p.y += (row->height - p.h) / 2; | |
638 | break; | |
639 | case ALIGN_BITMAP_BOTTOM: | |
640 | p.h = fb->height; | |
641 | p.y += (row->visible_height - p.h); | |
642 | break; | |
643 | case ALIGN_BITMAP_TOP: | |
644 | break; | |
645 | } | |
646 | ||
647 | rif->draw_fringe_bitmap (w, row, &p); | |
648 | } | |
649 | ||
650 | void | |
651 | draw_fringe_bitmap (w, row, left_p) | |
652 | struct window *w; | |
653 | struct glyph_row *row; | |
654 | int left_p; | |
655 | { | |
656 | int overlay = 0; | |
657 | ||
658 | if (!left_p && row->cursor_in_fringe_p) | |
659 | { | |
660 | int cursor = NO_FRINGE_BITMAP; | |
661 | ||
662 | switch (w->phys_cursor_type) | |
663 | { | |
664 | case HOLLOW_BOX_CURSOR: | |
665 | if (row->visible_height >= STANDARD_BITMAP_HEIGHT (hollow_box_cursor_bits)) | |
666 | cursor = HOLLOW_BOX_CURSOR_BITMAP; | |
667 | else | |
668 | cursor = HOLLOW_SQUARE_BITMAP; | |
669 | break; | |
670 | case FILLED_BOX_CURSOR: | |
671 | cursor = FILLED_BOX_CURSOR_BITMAP; | |
672 | break; | |
673 | case BAR_CURSOR: | |
674 | cursor = BAR_CURSOR_BITMAP; | |
675 | break; | |
676 | case HBAR_CURSOR: | |
677 | cursor = HBAR_CURSOR_BITMAP; | |
678 | break; | |
679 | case NO_CURSOR: | |
680 | default: | |
681 | w->phys_cursor_on_p = 0; | |
682 | row->cursor_in_fringe_p = 0; | |
683 | break; | |
684 | } | |
685 | if (cursor != NO_FRINGE_BITMAP) | |
686 | { | |
687 | draw_fringe_bitmap_1 (w, row, 0, 2, cursor); | |
688 | overlay = cursor == FILLED_BOX_CURSOR_BITMAP ? 3 : 1; | |
689 | } | |
690 | } | |
691 | ||
692 | draw_fringe_bitmap_1 (w, row, left_p, overlay, NO_FRINGE_BITMAP); | |
693 | ||
694 | if (left_p && row->overlay_arrow_p) | |
695 | draw_fringe_bitmap_1 (w, row, 1, 1, | |
696 | (w->overlay_arrow_bitmap | |
697 | ? w->overlay_arrow_bitmap | |
698 | : OVERLAY_ARROW_BITMAP)); | |
699 | } | |
700 | ||
701 | ||
702 | /* Draw fringe bitmaps for glyph row ROW on window W. Call this | |
703 | function with input blocked. */ | |
704 | ||
705 | void | |
706 | draw_row_fringe_bitmaps (w, row) | |
707 | struct window *w; | |
708 | struct glyph_row *row; | |
709 | { | |
710 | xassert (interrupt_input_blocked); | |
711 | ||
712 | /* If row is completely invisible, because of vscrolling, we | |
713 | don't have to draw anything. */ | |
714 | if (row->visible_height <= 0) | |
715 | return; | |
716 | ||
717 | if (WINDOW_LEFT_FRINGE_WIDTH (w) != 0) | |
718 | draw_fringe_bitmap (w, row, 1); | |
719 | ||
720 | if (WINDOW_RIGHT_FRINGE_WIDTH (w) != 0) | |
721 | draw_fringe_bitmap (w, row, 0); | |
722 | } | |
723 | ||
724 | /* Draw the fringes of window W. Only fringes for rows marked for | |
725 | update in redraw_fringe_bitmaps_p are drawn. */ | |
726 | ||
727 | void | |
728 | draw_window_fringes (w) | |
729 | struct window *w; | |
730 | { | |
731 | struct glyph_row *row; | |
732 | int yb = window_text_bottom_y (w); | |
733 | int nrows = w->current_matrix->nrows; | |
734 | int y = 0, rn; | |
735 | ||
736 | if (w->pseudo_window_p) | |
737 | return; | |
738 | ||
739 | for (y = 0, rn = 0, row = w->current_matrix->rows; | |
740 | y < yb && rn < nrows; | |
741 | y += row->height, ++row, ++rn) | |
742 | { | |
743 | if (!row->redraw_fringe_bitmaps_p) | |
744 | continue; | |
745 | draw_row_fringe_bitmaps (w, row); | |
746 | row->redraw_fringe_bitmaps_p = 0; | |
747 | } | |
748 | } | |
749 | ||
750 | ||
751 | /* Recalculate the bitmaps to show in the fringes of window W. | |
752 | If FORCE_P is 0, only mark rows with modified bitmaps for update in | |
753 | redraw_fringe_bitmaps_p; else mark all rows for update. */ | |
754 | ||
755 | int | |
756 | update_window_fringes (w, force_p) | |
757 | struct window *w; | |
758 | int force_p; | |
759 | { | |
760 | struct glyph_row *row, *cur = 0; | |
761 | int yb = window_text_bottom_y (w); | |
762 | int rn, nrows = w->current_matrix->nrows; | |
763 | int y; | |
764 | int redraw_p = 0; | |
5797a7a0 KS |
765 | Lisp_Object boundary_top = Qnil, boundary_bot = Qnil; |
766 | Lisp_Object arrow_top = Qnil, arrow_bot = Qnil; | |
767 | Lisp_Object empty_pos; | |
768 | Lisp_Object ind = Qnil; | |
6b61353c KH |
769 | |
770 | if (w->pseudo_window_p) | |
771 | return 0; | |
772 | ||
773 | if (!MINI_WINDOW_P (w) | |
774 | && (ind = XBUFFER (w->buffer)->indicate_buffer_boundaries, !NILP (ind))) | |
775 | { | |
5797a7a0 KS |
776 | if (EQ (ind, Qleft) || EQ (ind, Qright)) |
777 | boundary_top = boundary_bot = arrow_top = arrow_bot = ind; | |
778 | else if (CONSP (ind) && CONSP (XCAR (ind))) | |
779 | { | |
780 | Lisp_Object pos; | |
781 | if (pos = Fassq (Qt, ind), !NILP (pos)) | |
782 | boundary_top = boundary_bot = arrow_top = arrow_bot = XCDR (pos); | |
783 | if (pos = Fassq (Qtop, ind), !NILP (pos)) | |
784 | boundary_top = XCDR (pos); | |
785 | if (pos = Fassq (Qbottom, ind), !NILP (pos)) | |
786 | boundary_bot = XCDR (pos); | |
787 | if (pos = Fassq (Qup, ind), !NILP (pos)) | |
788 | arrow_top = XCDR (pos); | |
789 | if (pos = Fassq (Qdown, ind), !NILP (pos)) | |
790 | arrow_bot = XCDR (pos); | |
791 | } | |
6b61353c | 792 | else |
5797a7a0 KS |
793 | ind = Qnil; |
794 | } | |
6b61353c | 795 | |
5797a7a0 KS |
796 | if (!NILP (ind)) |
797 | { | |
798 | int do_eob = 1, do_bob = 1; | |
6b61353c KH |
799 | |
800 | for (y = 0, rn = 0; | |
801 | y < yb && rn < nrows; | |
802 | y += row->height, ++rn) | |
803 | { | |
804 | unsigned indicate_bob_p, indicate_top_line_p; | |
805 | unsigned indicate_eob_p, indicate_bottom_line_p; | |
806 | ||
807 | row = w->desired_matrix->rows + rn; | |
808 | if (!row->enabled_p) | |
809 | row = w->current_matrix->rows + rn; | |
810 | ||
811 | indicate_bob_p = row->indicate_bob_p; | |
812 | indicate_top_line_p = row->indicate_top_line_p; | |
813 | indicate_eob_p = row->indicate_eob_p; | |
814 | indicate_bottom_line_p = row->indicate_bottom_line_p; | |
815 | ||
816 | row->indicate_bob_p = row->indicate_top_line_p = 0; | |
817 | row->indicate_eob_p = row->indicate_bottom_line_p = 0; | |
818 | ||
5797a7a0 | 819 | if (!NILP (boundary_top) |
6b61353c KH |
820 | && MATRIX_ROW_START_CHARPOS (row) <= BUF_BEGV (XBUFFER (w->buffer))) |
821 | row->indicate_bob_p = do_bob, do_bob = 0; | |
5797a7a0 | 822 | else if (!NILP (arrow_top) |
6b61353c KH |
823 | && (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0) == rn) |
824 | row->indicate_top_line_p = 1; | |
825 | ||
5797a7a0 | 826 | if (!NILP (boundary_bot) |
6b61353c KH |
827 | && MATRIX_ROW_END_CHARPOS (row) >= BUF_ZV (XBUFFER (w->buffer))) |
828 | row->indicate_eob_p = do_eob, do_eob = 0; | |
5797a7a0 | 829 | else if (!NILP (arrow_bot) |
6b61353c KH |
830 | && y + row->height >= yb) |
831 | row->indicate_bottom_line_p = 1; | |
832 | ||
833 | if (indicate_bob_p != row->indicate_bob_p | |
834 | || indicate_top_line_p != row->indicate_top_line_p | |
835 | || indicate_eob_p != row->indicate_eob_p | |
836 | || indicate_bottom_line_p != row->indicate_bottom_line_p) | |
837 | row->redraw_fringe_bitmaps_p = 1; | |
838 | } | |
839 | } | |
840 | ||
5797a7a0 KS |
841 | empty_pos = XBUFFER (w->buffer)->indicate_empty_lines; |
842 | if (!NILP (empty_pos) && !EQ (empty_pos, Qright)) | |
843 | empty_pos = WINDOW_LEFT_FRINGE_WIDTH (w) == 0 ? Qright : Qleft; | |
6b61353c KH |
844 | |
845 | for (y = 0, rn = 0; | |
846 | y < yb && rn < nrows; | |
847 | y += row->height, rn++) | |
848 | { | |
849 | enum fringe_bitmap_type left, right; | |
850 | unsigned left_face_id, right_face_id; | |
851 | ||
852 | row = w->desired_matrix->rows + rn; | |
853 | cur = w->current_matrix->rows + rn; | |
854 | if (!row->enabled_p) | |
855 | row = cur; | |
856 | ||
857 | left_face_id = right_face_id = DEFAULT_FACE_ID; | |
858 | ||
859 | /* Decide which bitmap to draw in the left fringe. */ | |
860 | if (WINDOW_LEFT_FRINGE_WIDTH (w) == 0) | |
861 | left = NO_FRINGE_BITMAP; | |
862 | else if (row->left_user_fringe_bitmap != NO_FRINGE_BITMAP) | |
863 | { | |
864 | left = row->left_user_fringe_bitmap; | |
865 | left_face_id = row->left_user_fringe_face_id; | |
866 | } | |
5797a7a0 KS |
867 | else if (row->indicate_bob_p && EQ (boundary_top, Qleft)) |
868 | left = ((row->indicate_eob_p && EQ (boundary_bot, Qleft)) | |
6b61353c | 869 | ? LEFT_BRACKET_BITMAP : TOP_LEFT_ANGLE_BITMAP); |
5797a7a0 | 870 | else if (row->indicate_eob_p && EQ (boundary_bot, Qleft)) |
6b61353c KH |
871 | left = BOTTOM_LEFT_ANGLE_BITMAP; |
872 | else if (row->truncated_on_left_p) | |
873 | left = LEFT_TRUNCATION_BITMAP; | |
874 | else if (MATRIX_ROW_CONTINUATION_LINE_P (row)) | |
875 | left = CONTINUATION_LINE_BITMAP; | |
5797a7a0 | 876 | else if (row->indicate_empty_line_p && EQ (empty_pos, Qleft)) |
6b61353c | 877 | left = ZV_LINE_BITMAP; |
5797a7a0 | 878 | else if (row->indicate_top_line_p && EQ (arrow_top, Qleft)) |
6b61353c | 879 | left = UP_ARROW_BITMAP; |
5797a7a0 | 880 | else if (row->indicate_bottom_line_p && EQ (arrow_bot, Qleft)) |
6b61353c KH |
881 | left = DOWN_ARROW_BITMAP; |
882 | else | |
883 | left = NO_FRINGE_BITMAP; | |
884 | ||
885 | /* Decide which bitmap to draw in the right fringe. */ | |
886 | if (WINDOW_RIGHT_FRINGE_WIDTH (w) == 0) | |
887 | right = NO_FRINGE_BITMAP; | |
888 | else if (row->right_user_fringe_bitmap != NO_FRINGE_BITMAP) | |
889 | { | |
890 | right = row->right_user_fringe_bitmap; | |
891 | right_face_id = row->right_user_fringe_face_id; | |
892 | } | |
5797a7a0 KS |
893 | else if (row->indicate_bob_p && EQ (boundary_top, Qright)) |
894 | right = ((row->indicate_eob_p && EQ (boundary_bot, Qright)) | |
6b61353c | 895 | ? RIGHT_BRACKET_BITMAP : TOP_RIGHT_ANGLE_BITMAP); |
5797a7a0 | 896 | else if (row->indicate_eob_p && EQ (boundary_bot, Qright)) |
6b61353c KH |
897 | right = BOTTOM_RIGHT_ANGLE_BITMAP; |
898 | else if (row->truncated_on_right_p) | |
899 | right = RIGHT_TRUNCATION_BITMAP; | |
900 | else if (row->continued_p) | |
901 | right = CONTINUED_LINE_BITMAP; | |
5797a7a0 | 902 | else if (row->indicate_top_line_p && EQ (arrow_top, Qright)) |
6b61353c | 903 | right = UP_ARROW_BITMAP; |
5797a7a0 | 904 | else if (row->indicate_bottom_line_p && EQ (arrow_bot, Qright)) |
6b61353c | 905 | right = DOWN_ARROW_BITMAP; |
5797a7a0 | 906 | else if (row->indicate_empty_line_p && EQ (empty_pos, Qright)) |
6b61353c KH |
907 | right = ZV_LINE_BITMAP; |
908 | else | |
909 | right = NO_FRINGE_BITMAP; | |
910 | ||
911 | if (force_p | |
912 | || row->y != cur->y | |
913 | || row->visible_height != cur->visible_height | |
914 | || left != cur->left_fringe_bitmap | |
915 | || right != cur->right_fringe_bitmap | |
916 | || left_face_id != cur->left_fringe_face_id | |
917 | || right_face_id != cur->right_fringe_face_id | |
918 | || cur->redraw_fringe_bitmaps_p) | |
919 | { | |
920 | redraw_p = row->redraw_fringe_bitmaps_p = cur->redraw_fringe_bitmaps_p = 1; | |
921 | cur->left_fringe_bitmap = left; | |
922 | cur->right_fringe_bitmap = right; | |
923 | cur->left_fringe_face_id = left_face_id; | |
924 | cur->right_fringe_face_id = right_face_id; | |
925 | } | |
926 | ||
927 | if (row->overlay_arrow_p != cur->overlay_arrow_p) | |
928 | { | |
929 | redraw_p = row->redraw_fringe_bitmaps_p = cur->redraw_fringe_bitmaps_p = 1; | |
930 | cur->overlay_arrow_p = row->overlay_arrow_p; | |
931 | } | |
932 | ||
933 | row->left_fringe_bitmap = left; | |
934 | row->right_fringe_bitmap = right; | |
935 | row->left_fringe_face_id = left_face_id; | |
936 | row->right_fringe_face_id = right_face_id; | |
937 | } | |
938 | ||
939 | return redraw_p; | |
940 | } | |
941 | ||
942 | ||
943 | /* Compute actual fringe widths for frame F. | |
944 | ||
945 | If REDRAW is 1, redraw F if the fringe settings was actually | |
946 | modified and F is visible. | |
947 | ||
948 | Since the combined left and right fringe must occupy an integral | |
949 | number of columns, we may need to add some pixels to each fringe. | |
950 | Typically, we add an equal amount (+/- 1 pixel) to each fringe, | |
951 | but a negative width value is taken literally (after negating it). | |
952 | ||
953 | We never make the fringes narrower than specified. It is planned | |
954 | to make fringe bitmaps customizable and expandable, and at that | |
955 | time, the user will typically specify the minimum number of pixels | |
956 | needed for his bitmaps, so we shouldn't select anything less than | |
957 | what is specified. | |
958 | */ | |
959 | ||
960 | void | |
961 | compute_fringe_widths (f, redraw) | |
962 | struct frame *f; | |
963 | int redraw; | |
964 | { | |
965 | int o_left = FRAME_LEFT_FRINGE_WIDTH (f); | |
966 | int o_right = FRAME_RIGHT_FRINGE_WIDTH (f); | |
967 | int o_cols = FRAME_FRINGE_COLS (f); | |
968 | ||
969 | Lisp_Object left_fringe = Fassq (Qleft_fringe, f->param_alist); | |
970 | Lisp_Object right_fringe = Fassq (Qright_fringe, f->param_alist); | |
971 | int left_fringe_width, right_fringe_width; | |
972 | ||
973 | if (!NILP (left_fringe)) | |
974 | left_fringe = Fcdr (left_fringe); | |
975 | if (!NILP (right_fringe)) | |
976 | right_fringe = Fcdr (right_fringe); | |
977 | ||
978 | left_fringe_width = ((NILP (left_fringe) || !INTEGERP (left_fringe)) ? 8 : | |
979 | XINT (left_fringe)); | |
980 | right_fringe_width = ((NILP (right_fringe) || !INTEGERP (right_fringe)) ? 8 : | |
981 | XINT (right_fringe)); | |
982 | ||
983 | if (left_fringe_width || right_fringe_width) | |
984 | { | |
985 | int left_wid = left_fringe_width >= 0 ? left_fringe_width : -left_fringe_width; | |
986 | int right_wid = right_fringe_width >= 0 ? right_fringe_width : -right_fringe_width; | |
987 | int conf_wid = left_wid + right_wid; | |
988 | int font_wid = FRAME_COLUMN_WIDTH (f); | |
989 | int cols = (left_wid + right_wid + font_wid-1) / font_wid; | |
990 | int real_wid = cols * font_wid; | |
991 | if (left_wid && right_wid) | |
992 | { | |
993 | if (left_fringe_width < 0) | |
994 | { | |
995 | /* Left fringe width is fixed, adjust right fringe if necessary */ | |
996 | FRAME_LEFT_FRINGE_WIDTH (f) = left_wid; | |
997 | FRAME_RIGHT_FRINGE_WIDTH (f) = real_wid - left_wid; | |
998 | } | |
999 | else if (right_fringe_width < 0) | |
1000 | { | |
1001 | /* Right fringe width is fixed, adjust left fringe if necessary */ | |
1002 | FRAME_LEFT_FRINGE_WIDTH (f) = real_wid - right_wid; | |
1003 | FRAME_RIGHT_FRINGE_WIDTH (f) = right_wid; | |
1004 | } | |
1005 | else | |
1006 | { | |
1007 | /* Adjust both fringes with an equal amount. | |
1008 | Note that we are doing integer arithmetic here, so don't | |
1009 | lose a pixel if the total width is an odd number. */ | |
1010 | int fill = real_wid - conf_wid; | |
1011 | FRAME_LEFT_FRINGE_WIDTH (f) = left_wid + fill/2; | |
1012 | FRAME_RIGHT_FRINGE_WIDTH (f) = right_wid + fill - fill/2; | |
1013 | } | |
1014 | } | |
1015 | else if (left_fringe_width) | |
1016 | { | |
1017 | FRAME_LEFT_FRINGE_WIDTH (f) = real_wid; | |
1018 | FRAME_RIGHT_FRINGE_WIDTH (f) = 0; | |
1019 | } | |
1020 | else | |
1021 | { | |
1022 | FRAME_LEFT_FRINGE_WIDTH (f) = 0; | |
1023 | FRAME_RIGHT_FRINGE_WIDTH (f) = real_wid; | |
1024 | } | |
1025 | FRAME_FRINGE_COLS (f) = cols; | |
1026 | } | |
1027 | else | |
1028 | { | |
1029 | FRAME_LEFT_FRINGE_WIDTH (f) = 0; | |
1030 | FRAME_RIGHT_FRINGE_WIDTH (f) = 0; | |
1031 | FRAME_FRINGE_COLS (f) = 0; | |
1032 | } | |
1033 | ||
1034 | if (redraw && FRAME_VISIBLE_P (f)) | |
1035 | if (o_left != FRAME_LEFT_FRINGE_WIDTH (f) || | |
1036 | o_right != FRAME_RIGHT_FRINGE_WIDTH (f) || | |
1037 | o_cols != FRAME_FRINGE_COLS (f)) | |
1038 | redraw_frame (f); | |
1039 | } | |
1040 | ||
7a2a85be | 1041 | |
4cce0ab7 KS |
1042 | /* Free resources used by a user-defined bitmap. */ |
1043 | ||
1044 | int | |
7a2a85be KS |
1045 | destroy_fringe_bitmap (n) |
1046 | int n; | |
6b61353c | 1047 | { |
6b61353c KH |
1048 | struct fringe_bitmap **fbp; |
1049 | ||
6b61353c KH |
1050 | fringe_faces[n] = FRINGE_FACE_ID; |
1051 | ||
1052 | fbp = &fringe_bitmaps[n]; | |
1053 | if (*fbp && (*fbp)->dynamic) | |
1054 | { | |
f2be4fd0 | 1055 | if (rif && rif->destroy_fringe_bitmap) |
6b61353c KH |
1056 | rif->destroy_fringe_bitmap (n); |
1057 | xfree (*fbp); | |
1058 | *fbp = NULL; | |
1059 | } | |
1060 | ||
1061 | while (max_used_fringe_bitmap > MAX_STANDARD_FRINGE_BITMAPS | |
1062 | && fringe_bitmaps[max_used_fringe_bitmap - 1] == NULL) | |
1063 | max_used_fringe_bitmap--; | |
7a2a85be KS |
1064 | } |
1065 | ||
6b61353c | 1066 | |
7a2a85be KS |
1067 | DEFUN ("destroy-fringe-bitmap", Fdestroy_fringe_bitmap, Sdestroy_fringe_bitmap, |
1068 | 1, 1, 0, | |
1069 | doc: /* Destroy fringe bitmap BITMAP. | |
1070 | If BITMAP overrides a standard fringe bitmap, the original bitmap is restored. */) | |
1071 | (bitmap) | |
1072 | Lisp_Object bitmap; | |
1073 | { | |
1074 | int n; | |
7a2a85be | 1075 | |
4cce0ab7 KS |
1076 | CHECK_SYMBOL (bitmap); |
1077 | n = lookup_fringe_bitmap (bitmap); | |
1078 | if (!n) | |
7a2a85be KS |
1079 | return Qnil; |
1080 | ||
1081 | destroy_fringe_bitmap (n); | |
2d05deef | 1082 | |
4cce0ab7 | 1083 | if (n >= MAX_STANDARD_FRINGE_BITMAPS) |
7a2a85be | 1084 | { |
4cce0ab7 | 1085 | Vfringe_bitmaps = Fdelq (bitmap, Vfringe_bitmaps); |
7a2a85be | 1086 | /* It would be better to remove the fringe property. */ |
4cce0ab7 | 1087 | Fput (bitmap, Qfringe, Qnil); |
7a2a85be | 1088 | } |
4cce0ab7 | 1089 | |
6b61353c KH |
1090 | return Qnil; |
1091 | } | |
1092 | ||
1093 | ||
1094 | /* Initialize bitmap bit. | |
1095 | ||
1096 | On X, we bit-swap the built-in bitmaps and reduce bitmap | |
1097 | from short to char array if width is <= 8 bits. | |
1098 | ||
1099 | On MAC with big-endian CPU, we need to byte-swap each short. | |
1100 | ||
1101 | On W32 and MAC (little endian), there's no need to do this. | |
1102 | */ | |
1103 | ||
1104 | void | |
1105 | init_fringe_bitmap (which, fb, once_p) | |
1106 | enum fringe_bitmap_type which; | |
1107 | struct fringe_bitmap *fb; | |
1108 | int once_p; | |
1109 | { | |
1110 | if (once_p || fb->dynamic) | |
1111 | { | |
1112 | #if defined (HAVE_X_WINDOWS) | |
1113 | static unsigned char swap_nibble[16] | |
1114 | = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */ | |
1115 | 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */ | |
1116 | 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */ | |
1117 | 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */ | |
1118 | unsigned short *bits = fb->bits; | |
1119 | int j; | |
1120 | ||
1121 | if (fb->width <= 8) | |
1122 | { | |
1123 | unsigned char *cbits = (unsigned char *)fb->bits; | |
1124 | for (j = 0; j < fb->height; j++) | |
1125 | { | |
1126 | unsigned short b = *bits++; | |
1127 | unsigned char c; | |
1128 | c = (unsigned char)((swap_nibble[b & 0xf] << 4) | |
1129 | | (swap_nibble[(b>>4) & 0xf])); | |
1130 | *cbits++ = (c >> (8 - fb->width)); | |
1131 | } | |
1132 | } | |
1133 | else | |
1134 | { | |
1135 | for (j = 0; j < fb->height; j++) | |
1136 | { | |
1137 | unsigned short b = *bits; | |
1138 | b = (unsigned short)((swap_nibble[b & 0xf] << 12) | |
1139 | | (swap_nibble[(b>>4) & 0xf] << 8) | |
1140 | | (swap_nibble[(b>>8) & 0xf] << 4) | |
1141 | | (swap_nibble[(b>>12) & 0xf])); | |
1142 | *bits++ = (b >> (16 - fb->width)); | |
1143 | } | |
1144 | } | |
1145 | #endif /* HAVE_X_WINDOWS */ | |
1146 | ||
1147 | #if defined (MAC_OS) && defined (WORDS_BIG_ENDIAN) | |
1148 | unsigned short *bits = fb->bits; | |
1149 | int j; | |
1150 | for (j = 0; j < fb->height; j++) | |
1151 | { | |
1152 | unsigned short b = *bits; | |
1153 | *bits++ = ((b >> 8) & 0xff) | ((b & 0xff) << 8); | |
1154 | } | |
1155 | #endif /* MAC_OS && WORDS_BIG_ENDIAN */ | |
1156 | } | |
1157 | ||
1158 | if (!once_p) | |
1159 | { | |
7a2a85be | 1160 | destroy_fringe_bitmap (which); |
6b61353c | 1161 | |
f2be4fd0 | 1162 | if (rif && rif->define_fringe_bitmap) |
6b61353c KH |
1163 | rif->define_fringe_bitmap (which, fb->bits, fb->height, fb->width); |
1164 | ||
1165 | fringe_bitmaps[which] = fb; | |
1166 | if (which >= max_used_fringe_bitmap) | |
1167 | max_used_fringe_bitmap = which + 1; | |
1168 | } | |
1169 | } | |
1170 | ||
1171 | ||
1172 | DEFUN ("define-fringe-bitmap", Fdefine_fringe_bitmap, Sdefine_fringe_bitmap, | |
7a2a85be KS |
1173 | 2, 5, 0, |
1174 | doc: /* Define fringe bitmap BITMAP from BITS of size HEIGHT x WIDTH. | |
1175 | BITMAP is a symbol or string naming the new fringe bitmap. | |
6b61353c KH |
1176 | BITS is either a string or a vector of integers. |
1177 | HEIGHT is height of bitmap. If HEIGHT is nil, use length of BITS. | |
1178 | WIDTH must be an integer between 1 and 16, or nil which defaults to 8. | |
7a2a85be | 1179 | Optional fifth arg ALIGN may be one of `top', `center', or `bottom', |
6b61353c KH |
1180 | indicating the positioning of the bitmap relative to the rows where it |
1181 | is used; the default is to center the bitmap. Fourth arg may also be a | |
1182 | list (ALIGN PERIODIC) where PERIODIC non-nil specifies that the bitmap | |
1183 | should be repeated. | |
7a2a85be KS |
1184 | If BITMAP already exists, the existing definition is replaced. */) |
1185 | (bitmap, bits, height, width, align) | |
1186 | Lisp_Object bitmap, bits, height, width, align; | |
6b61353c KH |
1187 | { |
1188 | Lisp_Object len; | |
1189 | int n, h, i, j; | |
1190 | unsigned short *b; | |
1191 | struct fringe_bitmap fb, *xfb; | |
1192 | int fill1 = 0, fill2 = 0; | |
7a2a85be | 1193 | |
4cce0ab7 | 1194 | CHECK_SYMBOL (bitmap); |
6b61353c KH |
1195 | |
1196 | if (!STRINGP (bits) && !VECTORP (bits)) | |
1197 | bits = wrong_type_argument (Qstringp, bits); | |
1198 | ||
1199 | len = Flength (bits); | |
1200 | ||
1201 | if (NILP (height)) | |
1202 | h = fb.height = XINT (len); | |
1203 | else | |
1204 | { | |
1205 | CHECK_NUMBER (height); | |
1206 | fb.height = min (XINT (height), 255); | |
1207 | if (fb.height > XINT (len)) | |
1208 | { | |
1209 | h = XINT (len); | |
1210 | fill1 = (fb.height - h) / 2; | |
1211 | fill2 = fb.height - h - fill1; | |
1212 | } | |
1213 | } | |
1214 | ||
1215 | if (NILP (width)) | |
1216 | fb.width = 8; | |
1217 | else | |
1218 | { | |
1219 | CHECK_NUMBER (width); | |
1220 | fb.width = min (XINT (width), 255); | |
1221 | } | |
1222 | ||
1223 | fb.period = 0; | |
1224 | fb.align = ALIGN_BITMAP_CENTER; | |
1225 | ||
1226 | if (CONSP (align)) | |
1227 | { | |
1228 | Lisp_Object period = XCDR (align); | |
1229 | if (CONSP (period)) | |
1230 | { | |
1231 | period = XCAR (period); | |
1232 | if (!NILP (period)) | |
1233 | { | |
1234 | fb.period = fb.height; | |
1235 | fb.height = 255; | |
1236 | } | |
1237 | } | |
1238 | align = XCAR (align); | |
1239 | } | |
1240 | if (EQ (align, Qtop)) | |
1241 | fb.align = ALIGN_BITMAP_TOP; | |
1242 | else if (EQ (align, Qbottom)) | |
1243 | fb.align = ALIGN_BITMAP_BOTTOM; | |
1244 | else if (!NILP (align) && !EQ (align, Qcenter)) | |
1245 | error ("Bad align argument"); | |
1246 | ||
ad67849e | 1247 | n = lookup_fringe_bitmap (bitmap); |
4cce0ab7 | 1248 | if (!n) |
6b61353c | 1249 | { |
ad67849e | 1250 | if (max_used_fringe_bitmap < max_fringe_bitmaps) |
6b61353c KH |
1251 | n = max_used_fringe_bitmap++; |
1252 | else | |
1253 | { | |
1254 | for (n = MAX_STANDARD_FRINGE_BITMAPS; | |
ad67849e | 1255 | n < max_fringe_bitmaps; |
6b61353c KH |
1256 | n++) |
1257 | if (fringe_bitmaps[n] == NULL) | |
1258 | break; | |
ad67849e KS |
1259 | |
1260 | if (n == max_fringe_bitmaps) | |
1261 | { | |
1262 | if ((max_fringe_bitmaps + 20) > MAX_FRINGE_BITMAPS) | |
1263 | error ("No free fringe bitmap slots"); | |
1264 | ||
1265 | i = max_fringe_bitmaps; | |
1266 | max_fringe_bitmaps += 20; | |
1267 | fringe_bitmaps | |
1268 | = ((struct fringe_bitmap **) | |
1269 | xrealloc (fringe_bitmaps, max_fringe_bitmaps * sizeof (struct fringe_bitmap *))); | |
1270 | fringe_faces | |
1271 | = (unsigned *) xrealloc (fringe_faces, max_fringe_bitmaps * sizeof (unsigned)); | |
1272 | ||
1273 | for (; i < max_fringe_bitmaps; i++) | |
1274 | { | |
1275 | fringe_bitmaps[i] = NULL; | |
1276 | fringe_faces[i] = FRINGE_FACE_ID; | |
1277 | } | |
1278 | } | |
6b61353c | 1279 | } |
7a2a85be | 1280 | |
4cce0ab7 KS |
1281 | Vfringe_bitmaps = Fcons (bitmap, Vfringe_bitmaps); |
1282 | Fput (bitmap, Qfringe, make_number (n)); | |
6b61353c KH |
1283 | } |
1284 | ||
1285 | fb.dynamic = 1; | |
1286 | ||
1287 | xfb = (struct fringe_bitmap *) xmalloc (sizeof fb | |
1288 | + fb.height * BYTES_PER_BITMAP_ROW); | |
1289 | fb.bits = b = (unsigned short *) (xfb + 1); | |
1290 | bzero (b, fb.height); | |
1291 | ||
1292 | j = 0; | |
1293 | while (j < fb.height) | |
1294 | { | |
1295 | for (i = 0; i < fill1 && j < fb.height; i++) | |
1296 | b[j++] = 0; | |
1297 | for (i = 0; i < h && j < fb.height; i++) | |
1298 | { | |
1299 | Lisp_Object elt = Faref (bits, make_number (i)); | |
1300 | b[j++] = NUMBERP (elt) ? XINT (elt) : 0; | |
1301 | } | |
1302 | for (i = 0; i < fill2 && j < fb.height; i++) | |
1303 | b[j++] = 0; | |
1304 | } | |
1305 | ||
1306 | *xfb = fb; | |
1307 | ||
1308 | init_fringe_bitmap (n, xfb, 0); | |
1309 | ||
4cce0ab7 | 1310 | return bitmap; |
6b61353c KH |
1311 | } |
1312 | ||
1313 | DEFUN ("set-fringe-bitmap-face", Fset_fringe_bitmap_face, Sset_fringe_bitmap_face, | |
1314 | 1, 2, 0, | |
7a2a85be | 1315 | doc: /* Set face for fringe bitmap BITMAP to FACE. |
6b61353c | 1316 | If FACE is nil, reset face to default fringe face. */) |
7a2a85be KS |
1317 | (bitmap, face) |
1318 | Lisp_Object bitmap, face; | |
6b61353c | 1319 | { |
4cce0ab7 | 1320 | int n; |
6b61353c KH |
1321 | int face_id; |
1322 | ||
4cce0ab7 KS |
1323 | CHECK_SYMBOL (bitmap); |
1324 | n = lookup_fringe_bitmap (bitmap); | |
1325 | if (!n) | |
7a2a85be | 1326 | error ("Undefined fringe bitmap"); |
6b61353c KH |
1327 | |
1328 | if (!NILP (face)) | |
1329 | { | |
1330 | face_id = lookup_named_face (SELECTED_FRAME (), face); | |
1331 | if (face_id < 0) | |
1332 | error ("No such face"); | |
1333 | } | |
1334 | else | |
1335 | face_id = FRINGE_FACE_ID; | |
1336 | ||
4cce0ab7 | 1337 | fringe_faces[n] = face_id; |
6b61353c KH |
1338 | |
1339 | return Qnil; | |
1340 | } | |
1341 | ||
1342 | DEFUN ("fringe-bitmaps-at-pos", Ffringe_bitmaps_at_pos, Sfringe_bitmaps_at_pos, | |
1343 | 0, 2, 0, | |
1344 | doc: /* Return fringe bitmaps of row containing position POS in window WINDOW. | |
1345 | If WINDOW is nil, use selected window. If POS is nil, use value of point | |
1346 | in that window. Return value is a cons (LEFT . RIGHT) where LEFT and RIGHT | |
1347 | are the fringe bitmap numbers for the bitmaps in the left and right fringe, | |
5797a7a0 KS |
1348 | resp. If left or right fringe is empty, the corresponding element is nil. |
1349 | Return nil if POS is not visible in WINDOW. */) | |
6b61353c KH |
1350 | (pos, window) |
1351 | Lisp_Object pos, window; | |
1352 | { | |
1353 | struct window *w; | |
1354 | struct buffer *old_buffer = NULL; | |
1355 | struct glyph_row *row; | |
1356 | int textpos; | |
1357 | ||
1358 | if (NILP (window)) | |
1359 | window = selected_window; | |
1360 | CHECK_WINDOW (window); | |
1361 | w = XWINDOW (window); | |
1362 | ||
1363 | if (!NILP (pos)) | |
1364 | { | |
1365 | CHECK_NUMBER_COERCE_MARKER (pos); | |
1366 | textpos = XINT (pos); | |
1367 | } | |
1368 | else if (w == XWINDOW (selected_window)) | |
1369 | textpos = PT; | |
1370 | else | |
1371 | textpos = XMARKER (w->pointm)->charpos; | |
1372 | ||
1373 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
1374 | row = row_containing_pos (w, textpos, row, NULL, 0); | |
1375 | if (row) | |
7a2a85be KS |
1376 | return Fcons (get_fringe_bitmap_name (row->left_fringe_bitmap), |
1377 | get_fringe_bitmap_name (row->right_fringe_bitmap)); | |
6b61353c KH |
1378 | else |
1379 | return Qnil; | |
1380 | } | |
1381 | ||
1382 | ||
1383 | /*********************************************************************** | |
1384 | Initialization | |
1385 | ***********************************************************************/ | |
1386 | ||
1387 | void | |
1388 | syms_of_fringe () | |
1389 | { | |
6b61353c KH |
1390 | defsubr (&Sdestroy_fringe_bitmap); |
1391 | defsubr (&Sdefine_fringe_bitmap); | |
1392 | defsubr (&Sfringe_bitmaps_at_pos); | |
1393 | defsubr (&Sset_fringe_bitmap_face); | |
1394 | ||
1395 | DEFVAR_LISP ("overflow-newline-into-fringe", &Voverflow_newline_into_fringe, | |
1396 | doc: /* *Non-nil means that newline may flow into the right fringe. | |
1397 | This means that display lines which are exactly as wide as the window | |
1398 | (not counting the final newline) will only occupy one screen line, by | |
1399 | showing (or hiding) the final newline in the right fringe; when point | |
1400 | is at the final newline, the cursor is shown in the right fringe. | |
1401 | If nil, also continue lines which are exactly as wide as the window. */); | |
1402 | Voverflow_newline_into_fringe = Qt; | |
1403 | ||
7a2a85be KS |
1404 | DEFVAR_LISP ("fringe-bitmaps", &Vfringe_bitmaps, |
1405 | doc: /* List of fringe bitmap symbols. | |
1406 | You must (require 'fringe) to use fringe bitmap symbols in your programs." */); | |
1407 | Vfringe_bitmaps = Qnil; | |
6b61353c KH |
1408 | } |
1409 | ||
1410 | /* Initialize this module when Emacs starts. */ | |
1411 | ||
1412 | void | |
1413 | init_fringe_once () | |
1414 | { | |
1415 | enum fringe_bitmap_type bt; | |
1416 | ||
1417 | for (bt = NO_FRINGE_BITMAP + 1; bt < MAX_STANDARD_FRINGE_BITMAPS; bt++) | |
1418 | init_fringe_bitmap(bt, &standard_bitmaps[bt], 1); | |
1419 | } | |
1420 | ||
1421 | void | |
1422 | init_fringe () | |
1423 | { | |
1424 | int i; | |
1425 | ||
ad67849e KS |
1426 | max_fringe_bitmaps = MAX_STANDARD_FRINGE_BITMAPS + 20; |
1427 | ||
1428 | fringe_bitmaps | |
1429 | = (struct fringe_bitmap **) xmalloc (max_fringe_bitmaps * sizeof (struct fringe_bitmap *)); | |
1430 | fringe_faces | |
1431 | = (unsigned *) xmalloc (max_fringe_bitmaps * sizeof (unsigned)); | |
1432 | ||
1433 | for (i = 0; i < max_fringe_bitmaps; i++) | |
1434 | { | |
1435 | fringe_bitmaps[i] = NULL; | |
1436 | fringe_faces[i] = FRINGE_FACE_ID; | |
1437 | } | |
6b61353c KH |
1438 | } |
1439 | ||
1440 | #ifdef HAVE_NTGUI | |
1441 | ||
1442 | void | |
1443 | w32_init_fringe () | |
1444 | { | |
1445 | enum fringe_bitmap_type bt; | |
1446 | ||
f2be4fd0 KS |
1447 | if (!rif) |
1448 | return; | |
1449 | ||
6b61353c KH |
1450 | for (bt = NO_FRINGE_BITMAP + 1; bt < MAX_STANDARD_FRINGE_BITMAPS; bt++) |
1451 | { | |
1452 | struct fringe_bitmap *fb = &standard_bitmaps[bt]; | |
1453 | rif->define_fringe_bitmap (bt, fb->bits, fb->height, fb->width); | |
1454 | } | |
1455 | } | |
1456 | ||
1457 | void | |
1458 | w32_reset_fringes () | |
1459 | { | |
1460 | /* Destroy row bitmaps. */ | |
1461 | int bt; | |
1462 | ||
f2be4fd0 KS |
1463 | if (!rif) |
1464 | return; | |
1465 | ||
6b61353c KH |
1466 | for (bt = NO_FRINGE_BITMAP + 1; bt < max_used_fringe_bitmap; bt++) |
1467 | rif->destroy_fringe_bitmap (bt); | |
1468 | } | |
1469 | ||
1470 | #endif /* HAVE_NTGUI */ | |
1471 | ||
1472 | #endif /* HAVE_WINDOW_SYSTEM */ | |
1473 | ||
1474 | /* arch-tag: 04596920-43eb-473d-b319-82712338162d | |
1475 | (do not change this comment) */ |