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" | |
e581a466 | 31 | #include "termhooks.h" |
2d05deef KS |
32 | |
33 | #ifdef HAVE_WINDOW_SYSTEM | |
34 | ||
7a2a85be | 35 | extern Lisp_Object Qfringe; |
2d05deef | 36 | extern Lisp_Object Qtop, Qbottom, Qcenter; |
5797a7a0 | 37 | extern Lisp_Object Qup, Qdown, Qleft, Qright; |
2d05deef KS |
38 | |
39 | /* Non-nil means that newline may flow into the right fringe. */ | |
40 | ||
41 | Lisp_Object Voverflow_newline_into_fringe; | |
42 | ||
7a2a85be KS |
43 | /* List of known fringe bitmap symbols. |
44 | ||
45 | The fringe bitmap number is stored in the `fringe' property on | |
46 | those symbols. Names for the built-in bitmaps are installed by | |
47 | loading fringe.el. | |
48 | */ | |
49 | ||
50 | Lisp_Object Vfringe_bitmaps; | |
2d05deef KS |
51 | |
52 | enum fringe_bitmap_type | |
53 | { | |
54 | NO_FRINGE_BITMAP = 0, | |
55 | UNDEF_FRINGE_BITMAP, | |
56 | LEFT_TRUNCATION_BITMAP, | |
57 | RIGHT_TRUNCATION_BITMAP, | |
58 | UP_ARROW_BITMAP, | |
59 | DOWN_ARROW_BITMAP, | |
60 | CONTINUED_LINE_BITMAP, | |
61 | CONTINUATION_LINE_BITMAP, | |
62 | OVERLAY_ARROW_BITMAP, | |
63 | TOP_LEFT_ANGLE_BITMAP, | |
64 | TOP_RIGHT_ANGLE_BITMAP, | |
65 | BOTTOM_LEFT_ANGLE_BITMAP, | |
66 | BOTTOM_RIGHT_ANGLE_BITMAP, | |
67 | LEFT_BRACKET_BITMAP, | |
68 | RIGHT_BRACKET_BITMAP, | |
69 | FILLED_BOX_CURSOR_BITMAP, | |
70 | HOLLOW_BOX_CURSOR_BITMAP, | |
71 | HOLLOW_SQUARE_BITMAP, | |
72 | BAR_CURSOR_BITMAP, | |
73 | HBAR_CURSOR_BITMAP, | |
74 | ZV_LINE_BITMAP, | |
75 | MAX_STANDARD_FRINGE_BITMAPS | |
76 | }; | |
77 | ||
78 | enum fringe_bitmap_align | |
79 | { | |
80 | ALIGN_BITMAP_CENTER = 0, | |
81 | ALIGN_BITMAP_TOP, | |
82 | ALIGN_BITMAP_BOTTOM | |
83 | }; | |
84 | ||
85 | struct fringe_bitmap | |
86 | { | |
0881a0fd | 87 | unsigned short *bits; |
2d05deef KS |
88 | unsigned height : 8; |
89 | unsigned width : 8; | |
90 | unsigned period : 8; | |
91 | unsigned align : 2; | |
92 | unsigned dynamic : 1; | |
93 | }; | |
94 | ||
95 | \f | |
96 | /*********************************************************************** | |
97 | Fringe bitmaps | |
98 | ***********************************************************************/ | |
99 | ||
100 | /* Undefined bitmap. A question mark. */ | |
101 | /* | |
102 | ..xxxx.. | |
103 | .xxxxxx. | |
104 | xx....xx | |
105 | xx....xx | |
106 | ....xx.. | |
107 | ...xx... | |
108 | ...xx... | |
109 | ........ | |
110 | ...xx... | |
111 | ...xx... | |
112 | */ | |
0881a0fd | 113 | static unsigned short unknown_bits[] = { |
2d05deef KS |
114 | 0x3c, 0x7e, 0x7e, 0x0c, 0x18, 0x18, 0x00, 0x18, 0x18}; |
115 | ||
116 | /* An arrow like this: `<-'. */ | |
117 | /* | |
118 | ...xx... | |
119 | ..xx.... | |
120 | .xx..... | |
121 | xxxxxx.. | |
122 | xxxxxx.. | |
123 | .xx..... | |
124 | ..xx.... | |
125 | ...xx... | |
126 | */ | |
0881a0fd | 127 | static unsigned short left_arrow_bits[] = { |
2d05deef KS |
128 | 0x18, 0x30, 0x60, 0xfc, 0xfc, 0x60, 0x30, 0x18}; |
129 | ||
130 | ||
131 | /* Right truncation arrow bitmap `->'. */ | |
132 | /* | |
133 | ...xx... | |
134 | ....xx.. | |
135 | .....xx. | |
136 | ..xxxxxx | |
137 | ..xxxxxx | |
138 | .....xx. | |
139 | ....xx.. | |
140 | ...xx... | |
141 | */ | |
0881a0fd | 142 | static unsigned short right_arrow_bits[] = { |
2d05deef KS |
143 | 0x18, 0x0c, 0x06, 0x3f, 0x3f, 0x06, 0x0c, 0x18}; |
144 | ||
145 | ||
146 | /* Up arrow bitmap. */ | |
147 | /* | |
148 | ...xx... | |
149 | ..xxxx.. | |
150 | .xxxxxx. | |
151 | xxxxxxxx | |
152 | ...xx... | |
153 | ...xx... | |
154 | ...xx... | |
155 | ...xx... | |
156 | */ | |
0881a0fd | 157 | static unsigned short up_arrow_bits[] = { |
2d05deef KS |
158 | 0x18, 0x3c, 0x7e, 0xff, 0x18, 0x18, 0x18, 0x18}; |
159 | ||
160 | ||
161 | /* Down arrow bitmap. */ | |
162 | /* | |
163 | ...xx... | |
164 | ...xx... | |
165 | ...xx... | |
166 | ...xx... | |
167 | xxxxxxxx | |
168 | .xxxxxx. | |
169 | ..xxxx.. | |
170 | ...xx... | |
171 | */ | |
0881a0fd | 172 | static unsigned short down_arrow_bits[] = { |
2d05deef KS |
173 | 0x18, 0x18, 0x18, 0x18, 0xff, 0x7e, 0x3c, 0x18}; |
174 | ||
175 | /* Marker for continued lines. */ | |
176 | /* | |
177 | ..xxxx.. | |
178 | ..xxxxx. | |
179 | ......xx | |
180 | ..x..xxx | |
181 | ..xxxxxx | |
182 | ..xxxxx. | |
183 | ..xxxx.. | |
184 | ..xxxxx. | |
185 | */ | |
0881a0fd | 186 | static unsigned short continued_bits[] = { |
2d05deef KS |
187 | 0x3c, 0x3e, 0x03, 0x27, 0x3f, 0x3e, 0x3c, 0x3e}; |
188 | ||
189 | /* Marker for continuation lines. */ | |
190 | /* | |
191 | ..xxxx.. | |
192 | .xxxxx.. | |
193 | xx...... | |
194 | xxx..x.. | |
195 | xxxxxx.. | |
196 | .xxxxx.. | |
197 | ..xxxx.. | |
198 | .xxxxx.. | |
199 | */ | |
0881a0fd | 200 | static unsigned short continuation_bits[] = { |
2d05deef KS |
201 | 0x3c, 0x7c, 0xc0, 0xe4, 0xfc, 0x7c, 0x3c, 0x7c}; |
202 | ||
203 | /* Overlay arrow bitmap. A triangular arrow. */ | |
204 | /* | |
205 | xx...... | |
206 | xxxx.... | |
207 | xxxxx... | |
208 | xxxxxx.. | |
209 | xxxxxx.. | |
210 | xxxxx... | |
211 | xxxx.... | |
212 | xx...... | |
213 | */ | |
0881a0fd | 214 | static unsigned short ov_bits[] = { |
2d05deef KS |
215 | 0xc0, 0xf0, 0xf8, 0xfc, 0xfc, 0xf8, 0xf0, 0xc0}; |
216 | ||
217 | #if 0 | |
218 | /* Reverse Overlay arrow bitmap. A triangular arrow. */ | |
219 | /* | |
220 | ......xx | |
221 | ....xxxx | |
222 | ...xxxxx | |
223 | ..xxxxxx | |
224 | ..xxxxxx | |
225 | ...xxxxx | |
226 | ....xxxx | |
227 | ......xx | |
228 | */ | |
0881a0fd | 229 | static unsigned short rev_ov_bits[] = { |
2d05deef KS |
230 | 0x03, 0x0f, 0x1f, 0x3f, 0x3f, 0x1f, 0x0f, 0x03}; |
231 | #endif | |
232 | ||
233 | /* First line bitmap. An top-left angle. */ | |
234 | /* | |
235 | xxxxxx.. | |
236 | xxxxxx.. | |
237 | xx...... | |
238 | xx...... | |
239 | xx...... | |
240 | xx...... | |
241 | xx...... | |
242 | ........ | |
243 | */ | |
0881a0fd | 244 | static unsigned short top_left_angle_bits[] = { |
2d05deef KS |
245 | 0xfc, 0xfc, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0x00}; |
246 | ||
247 | /* First line bitmap. An right-up angle. */ | |
248 | /* | |
249 | ..xxxxxx | |
250 | ..xxxxxx | |
251 | ......xx | |
252 | ......xx | |
253 | ......xx | |
254 | ......xx | |
255 | ......xx | |
256 | ........ | |
257 | */ | |
0881a0fd | 258 | static unsigned short top_right_angle_bits[] = { |
2d05deef KS |
259 | 0x3f, 0x3f, 0x03, 0x03, 0x03, 0x03, 0x03, 0x00}; |
260 | ||
261 | /* Last line bitmap. An left-down angle. */ | |
262 | /* | |
263 | ........ | |
264 | xx...... | |
265 | xx...... | |
266 | xx...... | |
267 | xx...... | |
268 | xx...... | |
269 | xxxxxx.. | |
270 | xxxxxx.. | |
271 | */ | |
0881a0fd | 272 | static unsigned short bottom_left_angle_bits[] = { |
2d05deef KS |
273 | 0x00, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xfc, 0xfc}; |
274 | ||
275 | /* Last line bitmap. An right-down angle. */ | |
276 | /* | |
277 | ........ | |
278 | ......xx | |
279 | ......xx | |
280 | ......xx | |
281 | ......xx | |
282 | ......xx | |
283 | ..xxxxxx | |
284 | ..xxxxxx | |
285 | */ | |
0881a0fd | 286 | static unsigned short bottom_right_angle_bits[] = { |
2d05deef KS |
287 | 0x00, 0x03, 0x03, 0x03, 0x03, 0x03, 0x3f, 0x3f}; |
288 | ||
289 | /* First/last line bitmap. An left bracket. */ | |
290 | /* | |
291 | xxxxxx.. | |
292 | xxxxxx.. | |
293 | xx...... | |
294 | xx...... | |
295 | xx...... | |
296 | xx...... | |
297 | xx...... | |
298 | xx...... | |
299 | xxxxxx.. | |
300 | xxxxxx.. | |
301 | */ | |
0881a0fd | 302 | static unsigned short left_bracket_bits[] = { |
2d05deef KS |
303 | 0xfc, 0xfc, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xfc, 0xfc}; |
304 | ||
305 | /* First/last line bitmap. An right bracket. */ | |
306 | /* | |
307 | ..xxxxxx | |
308 | ..xxxxxx | |
309 | ......xx | |
310 | ......xx | |
311 | ......xx | |
312 | ......xx | |
313 | ......xx | |
314 | ......xx | |
315 | ..xxxxxx | |
316 | ..xxxxxx | |
317 | */ | |
0881a0fd | 318 | static unsigned short right_bracket_bits[] = { |
2d05deef KS |
319 | 0x3f, 0x3f, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x3f, 0x3f}; |
320 | ||
321 | /* Filled box cursor bitmap. A filled box; max 13 pixels high. */ | |
322 | /* | |
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 | xxxxxxx. | |
336 | */ | |
0881a0fd | 337 | static unsigned short filled_box_cursor_bits[] = { |
2d05deef KS |
338 | 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe}; |
339 | ||
340 | /* Hollow box cursor bitmap. A hollow box; max 13 pixels high. */ | |
341 | /* | |
342 | xxxxxxx. | |
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 | x.....x. | |
354 | xxxxxxx. | |
355 | */ | |
0881a0fd | 356 | static unsigned short hollow_box_cursor_bits[] = { |
2d05deef KS |
357 | 0xfe, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0xfe}; |
358 | ||
359 | /* Bar cursor bitmap. A vertical bar; max 13 pixels high. */ | |
360 | /* | |
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 | xx...... | |
374 | */ | |
0881a0fd | 375 | static unsigned short bar_cursor_bits[] = { |
2d05deef KS |
376 | 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0}; |
377 | ||
378 | /* HBar cursor bitmap. A horisontal bar; 2 pixels high. */ | |
379 | /* | |
380 | xxxxxxx. | |
381 | xxxxxxx. | |
382 | */ | |
0881a0fd | 383 | static unsigned short hbar_cursor_bits[] = { |
2d05deef KS |
384 | 0xfe, 0xfe}; |
385 | ||
386 | ||
387 | /* Bitmap drawn to indicate lines not displaying text if | |
388 | `indicate-empty-lines' is non-nil. */ | |
389 | /* | |
390 | ........ | |
391 | ..xxxx.. | |
392 | ........ | |
393 | ........ | |
394 | ..xxxx.. | |
395 | ........ | |
396 | */ | |
0881a0fd | 397 | static unsigned short zv_bits[] = { |
2d05deef KS |
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 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00}; | |
406 | ||
407 | /* Hollow square bitmap. */ | |
408 | /* | |
409 | .xxxxxx. | |
410 | .x....x. | |
411 | .x....x. | |
412 | .x....x. | |
413 | .x....x. | |
414 | .xxxxxx. | |
415 | */ | |
0881a0fd | 416 | static unsigned short hollow_square_bits[] = { |
2d05deef KS |
417 | 0x7e, 0x42, 0x42, 0x42, 0x42, 0x7e}; |
418 | ||
419 | ||
0881a0fd KS |
420 | #define BYTES_PER_BITMAP_ROW (sizeof (unsigned short)) |
421 | #define STANDARD_BITMAP_HEIGHT(bits) (sizeof (bits)/BYTES_PER_BITMAP_ROW) | |
422 | #define FRBITS(bits) bits, STANDARD_BITMAP_HEIGHT (bits) | |
2d05deef | 423 | |
2d05deef KS |
424 | struct fringe_bitmap standard_bitmaps[MAX_STANDARD_FRINGE_BITMAPS] = |
425 | { | |
426 | { NULL, 0, 0, 0, 0, 0 }, /* NO_FRINGE_BITMAP */ | |
427 | { FRBITS (unknown_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
428 | { FRBITS (left_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
429 | { FRBITS (right_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
430 | { FRBITS (up_arrow_bits), 8, 0, ALIGN_BITMAP_TOP, 0 }, | |
431 | { FRBITS (down_arrow_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, | |
432 | { FRBITS (continued_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
433 | { FRBITS (continuation_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
434 | { FRBITS (ov_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
435 | { FRBITS (top_left_angle_bits), 8, 0, ALIGN_BITMAP_TOP, 0 }, | |
436 | { FRBITS (top_right_angle_bits), 8, 0, ALIGN_BITMAP_TOP, 0 }, | |
437 | { FRBITS (bottom_left_angle_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, | |
438 | { FRBITS (bottom_right_angle_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, | |
439 | { FRBITS (left_bracket_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
440 | { FRBITS (right_bracket_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
441 | { FRBITS (filled_box_cursor_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
442 | { FRBITS (hollow_box_cursor_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
443 | { FRBITS (hollow_square_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
444 | { FRBITS (bar_cursor_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
445 | { FRBITS (hbar_cursor_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, | |
446 | { FRBITS (zv_bits), 8, 3, ALIGN_BITMAP_TOP, 0 }, | |
447 | }; | |
448 | ||
449 | static struct fringe_bitmap *fringe_bitmaps[MAX_FRINGE_BITMAPS]; | |
450 | static unsigned fringe_faces[MAX_FRINGE_BITMAPS]; | |
451 | ||
452 | static int max_used_fringe_bitmap = MAX_STANDARD_FRINGE_BITMAPS; | |
453 | ||
454 | /* Return 1 if FRINGE_ID is a valid fringe bitmap id. */ | |
455 | ||
456 | int | |
7a2a85be KS |
457 | valid_fringe_bitmap_p (bitmap) |
458 | Lisp_Object bitmap; | |
459 | { | |
460 | int bn; | |
461 | ||
462 | if (!INTEGERP (bitmap)) | |
463 | return 0; | |
464 | ||
465 | bn = XINT (bitmap); | |
466 | return (bn >= NO_FRINGE_BITMAP | |
467 | && bn < max_used_fringe_bitmap | |
468 | && (bn < MAX_STANDARD_FRINGE_BITMAPS | |
469 | || fringe_bitmaps[bn] != NULL)); | |
470 | } | |
471 | ||
472 | /* Get fringe bitmap name for bitmap number BN. | |
473 | ||
474 | Found by traversing Vfringe_bitmaps comparing BN to the | |
475 | fringe property for each symbol. | |
476 | ||
477 | Return BN if not found in Vfringe_bitmaps. */ | |
478 | ||
479 | static Lisp_Object | |
480 | get_fringe_bitmap_name (bn) | |
481 | int bn; | |
482 | { | |
483 | Lisp_Object bitmaps; | |
484 | Lisp_Object num; | |
485 | ||
486 | /* Zero means no bitmap -- return nil. */ | |
487 | if (bn <= 0) | |
488 | return Qnil; | |
489 | ||
490 | bitmaps = Vfringe_bitmaps; | |
491 | num = make_number (bn); | |
492 | ||
493 | while (CONSP (bitmaps)) | |
494 | { | |
495 | Lisp_Object bitmap = XCAR (bitmaps); | |
496 | if (EQ (num, Fget (bitmap, Qfringe))) | |
497 | return bitmap; | |
498 | bitmaps = XCDR (bitmaps); | |
499 | } | |
500 | ||
501 | return num; | |
502 | } | |
503 | ||
504 | ||
505 | /* Resolve a BITMAP parameter. | |
506 | ||
507 | An INTEGER, corresponding to a bitmap number. | |
508 | A STRING which is interned to a symbol. | |
509 | A SYMBOL which has a fringe property which is a bitmap number. | |
510 | */ | |
511 | ||
512 | static int | |
513 | resolve_fringe_bitmap (bitmap, namep) | |
514 | Lisp_Object bitmap; | |
515 | Lisp_Object *namep; | |
2d05deef | 516 | { |
7a2a85be KS |
517 | if (namep) |
518 | *namep = Qnil; | |
519 | ||
520 | if (STRINGP (bitmap)) | |
521 | bitmap = intern (SDATA (bitmap)); | |
522 | ||
523 | if (SYMBOLP (bitmap)) | |
524 | { | |
525 | if (namep) | |
526 | *namep = bitmap; | |
527 | bitmap = Fget (bitmap, Qfringe); | |
528 | } | |
529 | ||
530 | if (valid_fringe_bitmap_p (bitmap)) | |
531 | { | |
532 | if (namep && NILP (*namep)) | |
533 | *namep = get_fringe_bitmap_name (XINT (bitmap)); | |
534 | return XINT (bitmap); | |
535 | } | |
536 | ||
537 | return -1; | |
2d05deef KS |
538 | } |
539 | ||
7a2a85be | 540 | |
2d05deef KS |
541 | /* Draw the bitmap WHICH in one of the left or right fringes of |
542 | window W. ROW is the glyph row for which to display the bitmap; it | |
543 | determines the vertical position at which the bitmap has to be | |
544 | drawn. | |
545 | LEFT_P is 1 for left fringe, 0 for right fringe. | |
546 | */ | |
547 | ||
548 | void | |
549 | draw_fringe_bitmap_1 (w, row, left_p, overlay, which) | |
550 | struct window *w; | |
551 | struct glyph_row *row; | |
552 | int left_p, overlay; | |
553 | enum fringe_bitmap_type which; | |
554 | { | |
555 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
556 | struct draw_fringe_bitmap_params p; | |
557 | struct fringe_bitmap *fb; | |
558 | int period; | |
559 | int face_id = DEFAULT_FACE_ID; | |
560 | ||
561 | p.cursor_p = 0; | |
562 | p.overlay_p = (overlay & 1) == 1; | |
563 | p.cursor_p = (overlay & 2) == 2; | |
564 | ||
565 | if (which != NO_FRINGE_BITMAP) | |
566 | { | |
567 | } | |
568 | else if (left_p) | |
569 | { | |
570 | which = row->left_fringe_bitmap; | |
571 | face_id = row->left_fringe_face_id; | |
572 | } | |
573 | else | |
574 | { | |
575 | which = row->right_fringe_bitmap; | |
576 | face_id = row->right_fringe_face_id; | |
577 | } | |
578 | ||
579 | if (face_id == DEFAULT_FACE_ID) | |
580 | face_id = fringe_faces[which]; | |
581 | ||
582 | fb = fringe_bitmaps[which]; | |
583 | if (fb == NULL) | |
584 | fb = &standard_bitmaps[which < MAX_STANDARD_FRINGE_BITMAPS | |
585 | ? which : UNDEF_FRINGE_BITMAP]; | |
586 | ||
587 | period = fb->period; | |
588 | ||
589 | /* Convert row to frame coordinates. */ | |
590 | p.y = WINDOW_TO_FRAME_PIXEL_Y (w, row->y); | |
591 | ||
592 | p.which = which; | |
593 | p.bits = fb->bits; | |
594 | p.wd = fb->width; | |
595 | ||
596 | p.h = fb->height; | |
597 | p.dh = (period > 0 ? (p.y % period) : 0); | |
598 | p.h -= p.dh; | |
599 | /* Clip bitmap if too high. */ | |
600 | if (p.h > row->height) | |
601 | p.h = row->height; | |
602 | ||
603 | p.face = FACE_FROM_ID (f, face_id); | |
604 | ||
605 | if (p.face == NULL) | |
606 | { | |
607 | /* Why does this happen? ++kfs */ | |
608 | return; | |
609 | } | |
610 | ||
611 | PREPARE_FACE_FOR_DISPLAY (f, p.face); | |
612 | ||
613 | /* Clear left fringe if no bitmap to draw or if bitmap doesn't fill | |
614 | the fringe. */ | |
615 | p.bx = -1; | |
616 | if (left_p) | |
617 | { | |
618 | int wd = WINDOW_LEFT_FRINGE_WIDTH (w); | |
619 | int x = window_box_left (w, (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
620 | ? LEFT_MARGIN_AREA | |
621 | : TEXT_AREA)); | |
622 | if (p.wd > wd) | |
623 | p.wd = wd; | |
624 | p.x = x - p.wd - (wd - p.wd) / 2; | |
625 | ||
626 | if (p.wd < wd || row->height > p.h) | |
627 | { | |
628 | /* If W has a vertical border to its left, don't draw over it. */ | |
629 | wd -= ((!WINDOW_LEFTMOST_P (w) | |
630 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) | |
631 | ? 1 : 0); | |
632 | p.bx = x - wd; | |
633 | p.nx = wd; | |
634 | } | |
635 | } | |
636 | else | |
637 | { | |
638 | int x = window_box_right (w, | |
639 | (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
640 | ? RIGHT_MARGIN_AREA | |
641 | : TEXT_AREA)); | |
642 | int wd = WINDOW_RIGHT_FRINGE_WIDTH (w); | |
643 | if (p.wd > wd) | |
644 | p.wd = wd; | |
645 | p.x = x + (wd - p.wd) / 2; | |
646 | /* Clear right fringe if no bitmap to draw of if bitmap doesn't fill | |
647 | the fringe. */ | |
648 | if (p.wd < wd || row->height > p.h) | |
649 | { | |
650 | p.bx = x; | |
651 | p.nx = wd; | |
652 | } | |
653 | } | |
654 | ||
655 | if (p.bx >= 0) | |
656 | { | |
657 | int header_line_height = WINDOW_HEADER_LINE_HEIGHT (w); | |
658 | ||
659 | p.by = WINDOW_TO_FRAME_PIXEL_Y (w, max (header_line_height, row->y)); | |
660 | p.ny = row->visible_height; | |
661 | } | |
662 | ||
663 | /* Adjust y to the offset in the row to start drawing the bitmap. */ | |
664 | switch (fb->align) | |
665 | { | |
666 | case ALIGN_BITMAP_CENTER: | |
667 | p.y += (row->height - p.h) / 2; | |
668 | break; | |
669 | case ALIGN_BITMAP_BOTTOM: | |
670 | p.h = fb->height; | |
671 | p.y += (row->visible_height - p.h); | |
672 | break; | |
673 | case ALIGN_BITMAP_TOP: | |
674 | break; | |
675 | } | |
676 | ||
e581a466 | 677 | FRAME_RIF (f)->draw_fringe_bitmap (w, row, &p); |
2d05deef KS |
678 | } |
679 | ||
680 | void | |
681 | draw_fringe_bitmap (w, row, left_p) | |
682 | struct window *w; | |
683 | struct glyph_row *row; | |
684 | int left_p; | |
685 | { | |
686 | int overlay = 0; | |
687 | ||
688 | if (!left_p && row->cursor_in_fringe_p) | |
689 | { | |
690 | int cursor = NO_FRINGE_BITMAP; | |
691 | ||
692 | switch (w->phys_cursor_type) | |
693 | { | |
694 | case HOLLOW_BOX_CURSOR: | |
0881a0fd | 695 | if (row->visible_height >= STANDARD_BITMAP_HEIGHT (hollow_box_cursor_bits)) |
2d05deef KS |
696 | cursor = HOLLOW_BOX_CURSOR_BITMAP; |
697 | else | |
698 | cursor = HOLLOW_SQUARE_BITMAP; | |
699 | break; | |
700 | case FILLED_BOX_CURSOR: | |
701 | cursor = FILLED_BOX_CURSOR_BITMAP; | |
702 | break; | |
703 | case BAR_CURSOR: | |
704 | cursor = BAR_CURSOR_BITMAP; | |
705 | break; | |
706 | case HBAR_CURSOR: | |
707 | cursor = HBAR_CURSOR_BITMAP; | |
708 | break; | |
709 | case NO_CURSOR: | |
710 | default: | |
711 | w->phys_cursor_on_p = 0; | |
712 | row->cursor_in_fringe_p = 0; | |
713 | break; | |
714 | } | |
715 | if (cursor != NO_FRINGE_BITMAP) | |
716 | { | |
717 | draw_fringe_bitmap_1 (w, row, 0, 2, cursor); | |
718 | overlay = cursor == FILLED_BOX_CURSOR_BITMAP ? 3 : 1; | |
719 | } | |
720 | } | |
721 | ||
722 | draw_fringe_bitmap_1 (w, row, left_p, overlay, NO_FRINGE_BITMAP); | |
723 | ||
724 | if (left_p && row->overlay_arrow_p) | |
1c2a9e98 KS |
725 | draw_fringe_bitmap_1 (w, row, 1, 1, |
726 | (w->overlay_arrow_bitmap | |
727 | ? w->overlay_arrow_bitmap | |
728 | : OVERLAY_ARROW_BITMAP)); | |
2d05deef KS |
729 | } |
730 | ||
731 | ||
732 | /* Draw fringe bitmaps for glyph row ROW on window W. Call this | |
733 | function with input blocked. */ | |
734 | ||
735 | void | |
736 | draw_row_fringe_bitmaps (w, row) | |
737 | struct window *w; | |
738 | struct glyph_row *row; | |
739 | { | |
740 | xassert (interrupt_input_blocked); | |
741 | ||
742 | /* If row is completely invisible, because of vscrolling, we | |
743 | don't have to draw anything. */ | |
744 | if (row->visible_height <= 0) | |
745 | return; | |
746 | ||
747 | if (WINDOW_LEFT_FRINGE_WIDTH (w) != 0) | |
748 | draw_fringe_bitmap (w, row, 1); | |
749 | ||
750 | if (WINDOW_RIGHT_FRINGE_WIDTH (w) != 0) | |
751 | draw_fringe_bitmap (w, row, 0); | |
752 | } | |
753 | ||
754 | /* Draw the fringes of window W. Only fringes for rows marked for | |
755 | update in redraw_fringe_bitmaps_p are drawn. */ | |
756 | ||
757 | void | |
758 | draw_window_fringes (w) | |
759 | struct window *w; | |
760 | { | |
761 | struct glyph_row *row; | |
762 | int yb = window_text_bottom_y (w); | |
763 | int nrows = w->current_matrix->nrows; | |
764 | int y = 0, rn; | |
765 | ||
766 | if (w->pseudo_window_p) | |
767 | return; | |
768 | ||
769 | for (y = 0, rn = 0, row = w->current_matrix->rows; | |
770 | y < yb && rn < nrows; | |
771 | y += row->height, ++row, ++rn) | |
772 | { | |
773 | if (!row->redraw_fringe_bitmaps_p) | |
774 | continue; | |
775 | draw_row_fringe_bitmaps (w, row); | |
776 | row->redraw_fringe_bitmaps_p = 0; | |
777 | } | |
778 | } | |
779 | ||
780 | ||
781 | /* Recalculate the bitmaps to show in the fringes of window W. | |
782 | If FORCE_P is 0, only mark rows with modified bitmaps for update in | |
783 | redraw_fringe_bitmaps_p; else mark all rows for update. */ | |
784 | ||
785 | int | |
786 | update_window_fringes (w, force_p) | |
787 | struct window *w; | |
788 | int force_p; | |
789 | { | |
790 | struct glyph_row *row, *cur = 0; | |
791 | int yb = window_text_bottom_y (w); | |
792 | int rn, nrows = w->current_matrix->nrows; | |
793 | int y; | |
794 | int redraw_p = 0; | |
5797a7a0 KS |
795 | Lisp_Object boundary_top = Qnil, boundary_bot = Qnil; |
796 | Lisp_Object arrow_top = Qnil, arrow_bot = Qnil; | |
797 | Lisp_Object empty_pos; | |
798 | Lisp_Object ind = Qnil; | |
2d05deef KS |
799 | |
800 | if (w->pseudo_window_p) | |
801 | return 0; | |
802 | ||
803 | if (!MINI_WINDOW_P (w) | |
804 | && (ind = XBUFFER (w->buffer)->indicate_buffer_boundaries, !NILP (ind))) | |
805 | { | |
5797a7a0 KS |
806 | if (EQ (ind, Qleft) || EQ (ind, Qright)) |
807 | boundary_top = boundary_bot = arrow_top = arrow_bot = ind; | |
808 | else if (CONSP (ind) && CONSP (XCAR (ind))) | |
809 | { | |
810 | Lisp_Object pos; | |
811 | if (pos = Fassq (Qt, ind), !NILP (pos)) | |
812 | boundary_top = boundary_bot = arrow_top = arrow_bot = XCDR (pos); | |
813 | if (pos = Fassq (Qtop, ind), !NILP (pos)) | |
814 | boundary_top = XCDR (pos); | |
815 | if (pos = Fassq (Qbottom, ind), !NILP (pos)) | |
816 | boundary_bot = XCDR (pos); | |
817 | if (pos = Fassq (Qup, ind), !NILP (pos)) | |
818 | arrow_top = XCDR (pos); | |
819 | if (pos = Fassq (Qdown, ind), !NILP (pos)) | |
820 | arrow_bot = XCDR (pos); | |
821 | } | |
2d05deef | 822 | else |
5797a7a0 KS |
823 | ind = Qnil; |
824 | } | |
2d05deef | 825 | |
5797a7a0 KS |
826 | if (!NILP (ind)) |
827 | { | |
828 | int do_eob = 1, do_bob = 1; | |
2d05deef KS |
829 | |
830 | for (y = 0, rn = 0; | |
831 | y < yb && rn < nrows; | |
832 | y += row->height, ++rn) | |
833 | { | |
834 | unsigned indicate_bob_p, indicate_top_line_p; | |
835 | unsigned indicate_eob_p, indicate_bottom_line_p; | |
bffe8c26 | 836 | |
2d05deef KS |
837 | row = w->desired_matrix->rows + rn; |
838 | if (!row->enabled_p) | |
839 | row = w->current_matrix->rows + rn; | |
840 | ||
841 | indicate_bob_p = row->indicate_bob_p; | |
842 | indicate_top_line_p = row->indicate_top_line_p; | |
843 | indicate_eob_p = row->indicate_eob_p; | |
844 | indicate_bottom_line_p = row->indicate_bottom_line_p; | |
bffe8c26 | 845 | |
2d05deef KS |
846 | row->indicate_bob_p = row->indicate_top_line_p = 0; |
847 | row->indicate_eob_p = row->indicate_bottom_line_p = 0; | |
848 | ||
5797a7a0 | 849 | if (!NILP (boundary_top) |
2d05deef KS |
850 | && MATRIX_ROW_START_CHARPOS (row) <= BUF_BEGV (XBUFFER (w->buffer))) |
851 | row->indicate_bob_p = do_bob, do_bob = 0; | |
5797a7a0 | 852 | else if (!NILP (arrow_top) |
2d05deef KS |
853 | && (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0) == rn) |
854 | row->indicate_top_line_p = 1; | |
855 | ||
5797a7a0 | 856 | if (!NILP (boundary_bot) |
2d05deef KS |
857 | && MATRIX_ROW_END_CHARPOS (row) >= BUF_ZV (XBUFFER (w->buffer))) |
858 | row->indicate_eob_p = do_eob, do_eob = 0; | |
5797a7a0 | 859 | else if (!NILP (arrow_bot) |
2d05deef KS |
860 | && y + row->height >= yb) |
861 | row->indicate_bottom_line_p = 1; | |
862 | ||
863 | if (indicate_bob_p != row->indicate_bob_p | |
864 | || indicate_top_line_p != row->indicate_top_line_p | |
865 | || indicate_eob_p != row->indicate_eob_p | |
866 | || indicate_bottom_line_p != row->indicate_bottom_line_p) | |
867 | row->redraw_fringe_bitmaps_p = 1; | |
868 | } | |
869 | } | |
870 | ||
5797a7a0 KS |
871 | empty_pos = XBUFFER (w->buffer)->indicate_empty_lines; |
872 | if (!NILP (empty_pos) && !EQ (empty_pos, Qright)) | |
873 | empty_pos = WINDOW_LEFT_FRINGE_WIDTH (w) == 0 ? Qright : Qleft; | |
2d05deef KS |
874 | |
875 | for (y = 0, rn = 0; | |
876 | y < yb && rn < nrows; | |
877 | y += row->height, rn++) | |
878 | { | |
879 | enum fringe_bitmap_type left, right; | |
880 | unsigned left_face_id, right_face_id; | |
881 | ||
882 | row = w->desired_matrix->rows + rn; | |
883 | cur = w->current_matrix->rows + rn; | |
884 | if (!row->enabled_p) | |
885 | row = cur; | |
886 | ||
887 | left_face_id = right_face_id = DEFAULT_FACE_ID; | |
888 | ||
889 | /* Decide which bitmap to draw in the left fringe. */ | |
890 | if (WINDOW_LEFT_FRINGE_WIDTH (w) == 0) | |
891 | left = NO_FRINGE_BITMAP; | |
892 | else if (row->left_user_fringe_bitmap != NO_FRINGE_BITMAP) | |
893 | { | |
894 | left = row->left_user_fringe_bitmap; | |
895 | left_face_id = row->left_user_fringe_face_id; | |
896 | } | |
5797a7a0 KS |
897 | else if (row->indicate_bob_p && EQ (boundary_top, Qleft)) |
898 | left = ((row->indicate_eob_p && EQ (boundary_bot, Qleft)) | |
2d05deef | 899 | ? LEFT_BRACKET_BITMAP : TOP_LEFT_ANGLE_BITMAP); |
5797a7a0 | 900 | else if (row->indicate_eob_p && EQ (boundary_bot, Qleft)) |
2d05deef KS |
901 | left = BOTTOM_LEFT_ANGLE_BITMAP; |
902 | else if (row->truncated_on_left_p) | |
903 | left = LEFT_TRUNCATION_BITMAP; | |
904 | else if (MATRIX_ROW_CONTINUATION_LINE_P (row)) | |
905 | left = CONTINUATION_LINE_BITMAP; | |
5797a7a0 | 906 | else if (row->indicate_empty_line_p && EQ (empty_pos, Qleft)) |
2d05deef | 907 | left = ZV_LINE_BITMAP; |
5797a7a0 | 908 | else if (row->indicate_top_line_p && EQ (arrow_top, Qleft)) |
2d05deef | 909 | left = UP_ARROW_BITMAP; |
5797a7a0 | 910 | else if (row->indicate_bottom_line_p && EQ (arrow_bot, Qleft)) |
2d05deef KS |
911 | left = DOWN_ARROW_BITMAP; |
912 | else | |
913 | left = NO_FRINGE_BITMAP; | |
914 | ||
915 | /* Decide which bitmap to draw in the right fringe. */ | |
916 | if (WINDOW_RIGHT_FRINGE_WIDTH (w) == 0) | |
917 | right = NO_FRINGE_BITMAP; | |
918 | else if (row->right_user_fringe_bitmap != NO_FRINGE_BITMAP) | |
919 | { | |
920 | right = row->right_user_fringe_bitmap; | |
921 | right_face_id = row->right_user_fringe_face_id; | |
922 | } | |
5797a7a0 KS |
923 | else if (row->indicate_bob_p && EQ (boundary_top, Qright)) |
924 | right = ((row->indicate_eob_p && EQ (boundary_bot, Qright)) | |
2d05deef | 925 | ? RIGHT_BRACKET_BITMAP : TOP_RIGHT_ANGLE_BITMAP); |
5797a7a0 | 926 | else if (row->indicate_eob_p && EQ (boundary_bot, Qright)) |
2d05deef KS |
927 | right = BOTTOM_RIGHT_ANGLE_BITMAP; |
928 | else if (row->truncated_on_right_p) | |
929 | right = RIGHT_TRUNCATION_BITMAP; | |
930 | else if (row->continued_p) | |
931 | right = CONTINUED_LINE_BITMAP; | |
5797a7a0 | 932 | else if (row->indicate_top_line_p && EQ (arrow_top, Qright)) |
2d05deef | 933 | right = UP_ARROW_BITMAP; |
5797a7a0 | 934 | else if (row->indicate_bottom_line_p && EQ (arrow_bot, Qright)) |
2d05deef | 935 | right = DOWN_ARROW_BITMAP; |
5797a7a0 | 936 | else if (row->indicate_empty_line_p && EQ (empty_pos, Qright)) |
2d05deef KS |
937 | right = ZV_LINE_BITMAP; |
938 | else | |
939 | right = NO_FRINGE_BITMAP; | |
940 | ||
941 | if (force_p | |
942 | || row->y != cur->y | |
943 | || row->visible_height != cur->visible_height | |
944 | || left != cur->left_fringe_bitmap | |
945 | || right != cur->right_fringe_bitmap | |
946 | || left_face_id != cur->left_fringe_face_id | |
947 | || right_face_id != cur->right_fringe_face_id | |
948 | || cur->redraw_fringe_bitmaps_p) | |
949 | { | |
950 | redraw_p = row->redraw_fringe_bitmaps_p = cur->redraw_fringe_bitmaps_p = 1; | |
951 | cur->left_fringe_bitmap = left; | |
952 | cur->right_fringe_bitmap = right; | |
953 | cur->left_fringe_face_id = left_face_id; | |
954 | cur->right_fringe_face_id = right_face_id; | |
955 | } | |
956 | ||
957 | if (row->overlay_arrow_p != cur->overlay_arrow_p) | |
958 | { | |
959 | redraw_p = row->redraw_fringe_bitmaps_p = cur->redraw_fringe_bitmaps_p = 1; | |
960 | cur->overlay_arrow_p = row->overlay_arrow_p; | |
961 | } | |
962 | ||
963 | row->left_fringe_bitmap = left; | |
964 | row->right_fringe_bitmap = right; | |
965 | row->left_fringe_face_id = left_face_id; | |
966 | row->right_fringe_face_id = right_face_id; | |
967 | } | |
968 | ||
969 | return redraw_p; | |
970 | } | |
971 | ||
972 | ||
bffe8c26 | 973 | /* Compute actual fringe widths for frame F. |
2d05deef KS |
974 | |
975 | If REDRAW is 1, redraw F if the fringe settings was actually | |
976 | modified and F is visible. | |
977 | ||
978 | Since the combined left and right fringe must occupy an integral | |
979 | number of columns, we may need to add some pixels to each fringe. | |
980 | Typically, we add an equal amount (+/- 1 pixel) to each fringe, | |
981 | but a negative width value is taken literally (after negating it). | |
982 | ||
983 | We never make the fringes narrower than specified. It is planned | |
984 | to make fringe bitmaps customizable and expandable, and at that | |
985 | time, the user will typically specify the minimum number of pixels | |
986 | needed for his bitmaps, so we shouldn't select anything less than | |
987 | what is specified. | |
988 | */ | |
989 | ||
990 | void | |
991 | compute_fringe_widths (f, redraw) | |
992 | struct frame *f; | |
993 | int redraw; | |
994 | { | |
995 | int o_left = FRAME_LEFT_FRINGE_WIDTH (f); | |
996 | int o_right = FRAME_RIGHT_FRINGE_WIDTH (f); | |
997 | int o_cols = FRAME_FRINGE_COLS (f); | |
998 | ||
999 | Lisp_Object left_fringe = Fassq (Qleft_fringe, f->param_alist); | |
1000 | Lisp_Object right_fringe = Fassq (Qright_fringe, f->param_alist); | |
1001 | int left_fringe_width, right_fringe_width; | |
1002 | ||
1003 | if (!NILP (left_fringe)) | |
1004 | left_fringe = Fcdr (left_fringe); | |
1005 | if (!NILP (right_fringe)) | |
1006 | right_fringe = Fcdr (right_fringe); | |
1007 | ||
1008 | left_fringe_width = ((NILP (left_fringe) || !INTEGERP (left_fringe)) ? 8 : | |
1009 | XINT (left_fringe)); | |
1010 | right_fringe_width = ((NILP (right_fringe) || !INTEGERP (right_fringe)) ? 8 : | |
1011 | XINT (right_fringe)); | |
1012 | ||
1013 | if (left_fringe_width || right_fringe_width) | |
1014 | { | |
1015 | int left_wid = left_fringe_width >= 0 ? left_fringe_width : -left_fringe_width; | |
1016 | int right_wid = right_fringe_width >= 0 ? right_fringe_width : -right_fringe_width; | |
1017 | int conf_wid = left_wid + right_wid; | |
1018 | int font_wid = FRAME_COLUMN_WIDTH (f); | |
1019 | int cols = (left_wid + right_wid + font_wid-1) / font_wid; | |
1020 | int real_wid = cols * font_wid; | |
1021 | if (left_wid && right_wid) | |
1022 | { | |
1023 | if (left_fringe_width < 0) | |
1024 | { | |
1025 | /* Left fringe width is fixed, adjust right fringe if necessary */ | |
1026 | FRAME_LEFT_FRINGE_WIDTH (f) = left_wid; | |
1027 | FRAME_RIGHT_FRINGE_WIDTH (f) = real_wid - left_wid; | |
1028 | } | |
1029 | else if (right_fringe_width < 0) | |
1030 | { | |
1031 | /* Right fringe width is fixed, adjust left fringe if necessary */ | |
1032 | FRAME_LEFT_FRINGE_WIDTH (f) = real_wid - right_wid; | |
1033 | FRAME_RIGHT_FRINGE_WIDTH (f) = right_wid; | |
1034 | } | |
1035 | else | |
1036 | { | |
1037 | /* Adjust both fringes with an equal amount. | |
1038 | Note that we are doing integer arithmetic here, so don't | |
1039 | lose a pixel if the total width is an odd number. */ | |
1040 | int fill = real_wid - conf_wid; | |
1041 | FRAME_LEFT_FRINGE_WIDTH (f) = left_wid + fill/2; | |
1042 | FRAME_RIGHT_FRINGE_WIDTH (f) = right_wid + fill - fill/2; | |
1043 | } | |
1044 | } | |
1045 | else if (left_fringe_width) | |
1046 | { | |
1047 | FRAME_LEFT_FRINGE_WIDTH (f) = real_wid; | |
1048 | FRAME_RIGHT_FRINGE_WIDTH (f) = 0; | |
1049 | } | |
1050 | else | |
1051 | { | |
1052 | FRAME_LEFT_FRINGE_WIDTH (f) = 0; | |
1053 | FRAME_RIGHT_FRINGE_WIDTH (f) = real_wid; | |
1054 | } | |
1055 | FRAME_FRINGE_COLS (f) = cols; | |
1056 | } | |
1057 | else | |
1058 | { | |
1059 | FRAME_LEFT_FRINGE_WIDTH (f) = 0; | |
1060 | FRAME_RIGHT_FRINGE_WIDTH (f) = 0; | |
1061 | FRAME_FRINGE_COLS (f) = 0; | |
1062 | } | |
1063 | ||
1064 | if (redraw && FRAME_VISIBLE_P (f)) | |
1065 | if (o_left != FRAME_LEFT_FRINGE_WIDTH (f) || | |
1066 | o_right != FRAME_RIGHT_FRINGE_WIDTH (f) || | |
1067 | o_cols != FRAME_FRINGE_COLS (f)) | |
1068 | redraw_frame (f); | |
1069 | } | |
1070 | ||
7a2a85be KS |
1071 | |
1072 | void | |
1073 | destroy_fringe_bitmap (n) | |
1074 | int n; | |
2d05deef | 1075 | { |
2d05deef KS |
1076 | struct fringe_bitmap **fbp; |
1077 | ||
2d05deef KS |
1078 | fringe_faces[n] = FRINGE_FACE_ID; |
1079 | ||
1080 | fbp = &fringe_bitmaps[n]; | |
1081 | if (*fbp && (*fbp)->dynamic) | |
1082 | { | |
e581a466 KL |
1083 | /* XXX Is SELECTED_FRAME OK here? */ |
1084 | if (FRAME_RIF (SELECTED_FRAME ())->destroy_fringe_bitmap) | |
1085 | FRAME_RIF (SELECTED_FRAME ())->destroy_fringe_bitmap (n); | |
2d05deef KS |
1086 | xfree (*fbp); |
1087 | *fbp = NULL; | |
1088 | } | |
1089 | ||
1090 | while (max_used_fringe_bitmap > MAX_STANDARD_FRINGE_BITMAPS | |
1091 | && fringe_bitmaps[max_used_fringe_bitmap - 1] == NULL) | |
1092 | max_used_fringe_bitmap--; | |
7a2a85be KS |
1093 | } |
1094 | ||
2d05deef | 1095 | |
7a2a85be KS |
1096 | DEFUN ("destroy-fringe-bitmap", Fdestroy_fringe_bitmap, Sdestroy_fringe_bitmap, |
1097 | 1, 1, 0, | |
1098 | doc: /* Destroy fringe bitmap BITMAP. | |
1099 | If BITMAP overrides a standard fringe bitmap, the original bitmap is restored. */) | |
1100 | (bitmap) | |
1101 | Lisp_Object bitmap; | |
1102 | { | |
1103 | int n; | |
1104 | Lisp_Object sym; | |
1105 | ||
1106 | n = resolve_fringe_bitmap (bitmap, &sym); | |
1107 | if (n < 0) | |
1108 | return Qnil; | |
1109 | ||
1110 | destroy_fringe_bitmap (n); | |
2d05deef | 1111 | |
7a2a85be KS |
1112 | if (SYMBOLP (sym)) |
1113 | { | |
1114 | Vfringe_bitmaps = Fdelq (sym, Vfringe_bitmaps); | |
1115 | /* It would be better to remove the fringe property. */ | |
1116 | Fput (sym, Qfringe, Qnil); | |
1117 | } | |
2d05deef KS |
1118 | return Qnil; |
1119 | } | |
1120 | ||
1121 | ||
1122 | /* Initialize bitmap bit. | |
0881a0fd KS |
1123 | |
1124 | On X, we bit-swap the built-in bitmaps and reduce bitmap | |
1125 | from short to char array if width is <= 8 bits. | |
1126 | ||
bd231131 KS |
1127 | On MAC with big-endian CPU, we need to byte-swap each short. |
1128 | ||
1129 | On W32 and MAC (little endian), there's no need to do this. | |
2d05deef KS |
1130 | */ |
1131 | ||
1132 | void | |
1133 | init_fringe_bitmap (which, fb, once_p) | |
1134 | enum fringe_bitmap_type which; | |
1135 | struct fringe_bitmap *fb; | |
1136 | int once_p; | |
1137 | { | |
1138 | if (once_p || fb->dynamic) | |
1139 | { | |
0881a0fd KS |
1140 | #if defined (HAVE_X_WINDOWS) |
1141 | static unsigned char swap_nibble[16] | |
1142 | = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */ | |
1143 | 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */ | |
1144 | 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */ | |
bd231131 | 1145 | 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */ |
0881a0fd | 1146 | unsigned short *bits = fb->bits; |
2d05deef | 1147 | int j; |
0881a0fd KS |
1148 | |
1149 | if (fb->width <= 8) | |
1150 | { | |
1151 | unsigned char *cbits = (unsigned char *)fb->bits; | |
1152 | for (j = 0; j < fb->height; j++) | |
1153 | { | |
1154 | unsigned short b = *bits++; | |
1155 | unsigned char c; | |
1156 | c = (unsigned char)((swap_nibble[b & 0xf] << 4) | |
1157 | | (swap_nibble[(b>>4) & 0xf])); | |
1158 | *cbits++ = (c >> (8 - fb->width)); | |
1159 | } | |
1160 | } | |
1161 | else | |
2d05deef | 1162 | { |
0881a0fd KS |
1163 | for (j = 0; j < fb->height; j++) |
1164 | { | |
1165 | unsigned short b = *bits; | |
1166 | b = (unsigned short)((swap_nibble[b & 0xf] << 12) | |
1167 | | (swap_nibble[(b>>4) & 0xf] << 8) | |
1168 | | (swap_nibble[(b>>8) & 0xf] << 4) | |
1169 | | (swap_nibble[(b>>12) & 0xf])); | |
1170 | *bits++ = (b >> (16 - fb->width)); | |
1171 | } | |
2d05deef | 1172 | } |
bd231131 KS |
1173 | #endif /* HAVE_X_WINDOWS */ |
1174 | ||
1175 | #if defined (MAC_OS) && defined (WORDS_BIG_ENDIAN) | |
1176 | unsigned short *bits = fb->bits; | |
159c348e | 1177 | int j; |
bd231131 KS |
1178 | for (j = 0; j < fb->height; j++) |
1179 | { | |
1180 | unsigned short b = *bits; | |
1181 | *bits++ = ((b >> 8) & 0xff) | ((b & 0xff) << 8); | |
1182 | } | |
1183 | #endif /* MAC_OS && WORDS_BIG_ENDIAN */ | |
2d05deef KS |
1184 | } |
1185 | ||
1186 | if (!once_p) | |
1187 | { | |
7a2a85be | 1188 | destroy_fringe_bitmap (which); |
2d05deef | 1189 | |
e581a466 KL |
1190 | /* XXX Is SELECTED_FRAME OK here? */ |
1191 | if (FRAME_RIF (SELECTED_FRAME ())->define_fringe_bitmap) | |
1192 | FRAME_RIF (SELECTED_FRAME ())->define_fringe_bitmap (which, fb->bits, fb->height, fb->width); | |
2d05deef KS |
1193 | |
1194 | fringe_bitmaps[which] = fb; | |
1195 | if (which >= max_used_fringe_bitmap) | |
1196 | max_used_fringe_bitmap = which + 1; | |
1197 | } | |
1198 | } | |
1199 | ||
1200 | ||
1201 | DEFUN ("define-fringe-bitmap", Fdefine_fringe_bitmap, Sdefine_fringe_bitmap, | |
7a2a85be KS |
1202 | 2, 5, 0, |
1203 | doc: /* Define fringe bitmap BITMAP from BITS of size HEIGHT x WIDTH. | |
1204 | BITMAP is a symbol or string naming the new fringe bitmap. | |
0881a0fd KS |
1205 | BITS is either a string or a vector of integers. |
1206 | HEIGHT is height of bitmap. If HEIGHT is nil, use length of BITS. | |
1207 | WIDTH must be an integer between 1 and 16, or nil which defaults to 8. | |
7a2a85be | 1208 | Optional fifth arg ALIGN may be one of `top', `center', or `bottom', |
0881a0fd KS |
1209 | indicating the positioning of the bitmap relative to the rows where it |
1210 | is used; the default is to center the bitmap. Fourth arg may also be a | |
1211 | list (ALIGN PERIODIC) where PERIODIC non-nil specifies that the bitmap | |
1212 | should be repeated. | |
7a2a85be KS |
1213 | If BITMAP already exists, the existing definition is replaced. */) |
1214 | (bitmap, bits, height, width, align) | |
1215 | Lisp_Object bitmap, bits, height, width, align; | |
2d05deef KS |
1216 | { |
1217 | Lisp_Object len; | |
1218 | int n, h, i, j; | |
0881a0fd | 1219 | unsigned short *b; |
2d05deef KS |
1220 | struct fringe_bitmap fb, *xfb; |
1221 | int fill1 = 0, fill2 = 0; | |
7a2a85be KS |
1222 | Lisp_Object sym; |
1223 | ||
1224 | n = resolve_fringe_bitmap (bitmap, &sym); | |
1225 | ||
1226 | if (NILP (sym) || INTEGERP (sym)) | |
1227 | sym = wrong_type_argument (Qsymbolp, bitmap); | |
2d05deef KS |
1228 | |
1229 | if (!STRINGP (bits) && !VECTORP (bits)) | |
1230 | bits = wrong_type_argument (Qstringp, bits); | |
1231 | ||
1232 | len = Flength (bits); | |
1233 | ||
1234 | if (NILP (height)) | |
1235 | h = fb.height = XINT (len); | |
1236 | else | |
1237 | { | |
1238 | CHECK_NUMBER (height); | |
1239 | fb.height = min (XINT (height), 255); | |
1240 | if (fb.height > XINT (len)) | |
1241 | { | |
1242 | h = XINT (len); | |
1243 | fill1 = (fb.height - h) / 2; | |
1244 | fill2 = fb.height - h - fill1; | |
1245 | } | |
1246 | } | |
bffe8c26 | 1247 | |
2d05deef KS |
1248 | if (NILP (width)) |
1249 | fb.width = 8; | |
1250 | else | |
1251 | { | |
1252 | CHECK_NUMBER (width); | |
1253 | fb.width = min (XINT (width), 255); | |
1254 | } | |
1255 | ||
1256 | fb.period = 0; | |
1257 | fb.align = ALIGN_BITMAP_CENTER; | |
1258 | ||
1259 | if (CONSP (align)) | |
1260 | { | |
1261 | Lisp_Object period = XCDR (align); | |
1262 | if (CONSP (period)) | |
1263 | { | |
1264 | period = XCAR (period); | |
1265 | if (!NILP (period)) | |
1266 | { | |
1267 | fb.period = fb.height; | |
1268 | fb.height = 255; | |
1269 | } | |
1270 | } | |
1271 | align = XCAR (align); | |
1272 | } | |
1273 | if (EQ (align, Qtop)) | |
1274 | fb.align = ALIGN_BITMAP_TOP; | |
1275 | else if (EQ (align, Qbottom)) | |
1276 | fb.align = ALIGN_BITMAP_BOTTOM; | |
1277 | else if (!NILP (align) && !EQ (align, Qcenter)) | |
1278 | error ("Bad align argument"); | |
1279 | ||
7a2a85be | 1280 | if (n < 0) |
2d05deef KS |
1281 | { |
1282 | if (max_used_fringe_bitmap < MAX_FRINGE_BITMAPS) | |
d2f14999 | 1283 | n = max_used_fringe_bitmap++; |
2d05deef KS |
1284 | else |
1285 | { | |
1286 | for (n = MAX_STANDARD_FRINGE_BITMAPS; | |
1287 | n < MAX_FRINGE_BITMAPS; | |
1288 | n++) | |
1289 | if (fringe_bitmaps[n] == NULL) | |
1290 | break; | |
1291 | if (n == MAX_FRINGE_BITMAPS) | |
7a2a85be | 1292 | error ("Cannot define more fringe bitmaps"); |
2d05deef | 1293 | } |
7a2a85be KS |
1294 | |
1295 | Vfringe_bitmaps = Fcons (sym, Vfringe_bitmaps); | |
1296 | Fput (sym, Qfringe, make_number (n)); | |
2d05deef KS |
1297 | } |
1298 | ||
1299 | fb.dynamic = 1; | |
1300 | ||
beaedd56 AS |
1301 | xfb = (struct fringe_bitmap *) xmalloc (sizeof fb |
1302 | + fb.height * BYTES_PER_BITMAP_ROW); | |
1303 | fb.bits = b = (unsigned short *) (xfb + 1); | |
2d05deef KS |
1304 | bzero (b, fb.height); |
1305 | ||
1306 | j = 0; | |
1307 | while (j < fb.height) | |
1308 | { | |
1309 | for (i = 0; i < fill1 && j < fb.height; i++) | |
1310 | b[j++] = 0; | |
e581a466 | 1311 | for (i = 0; i < h && j < fb.height; i++) |
2d05deef KS |
1312 | { |
1313 | Lisp_Object elt = Faref (bits, make_number (i)); | |
1314 | b[j++] = NUMBERP (elt) ? XINT (elt) : 0; | |
1315 | } | |
1316 | for (i = 0; i < fill2 && j < fb.height; i++) | |
1317 | b[j++] = 0; | |
1318 | } | |
1319 | ||
1320 | *xfb = fb; | |
1321 | ||
1322 | init_fringe_bitmap (n, xfb, 0); | |
1323 | ||
7a2a85be | 1324 | return sym; |
2d05deef KS |
1325 | } |
1326 | ||
1327 | DEFUN ("set-fringe-bitmap-face", Fset_fringe_bitmap_face, Sset_fringe_bitmap_face, | |
1328 | 1, 2, 0, | |
7a2a85be | 1329 | doc: /* Set face for fringe bitmap BITMAP to FACE. |
2d05deef | 1330 | If FACE is nil, reset face to default fringe face. */) |
7a2a85be KS |
1331 | (bitmap, face) |
1332 | Lisp_Object bitmap, face; | |
2d05deef | 1333 | { |
7a2a85be | 1334 | int bn; |
2d05deef KS |
1335 | int face_id; |
1336 | ||
7a2a85be KS |
1337 | bn = resolve_fringe_bitmap (bitmap, 0); |
1338 | if (bn < 0) | |
1339 | error ("Undefined fringe bitmap"); | |
2d05deef KS |
1340 | |
1341 | if (!NILP (face)) | |
1342 | { | |
1343 | face_id = lookup_named_face (SELECTED_FRAME (), face, 'A'); | |
1344 | if (face_id < 0) | |
1345 | error ("No such face"); | |
1346 | } | |
1347 | else | |
1348 | face_id = FRINGE_FACE_ID; | |
1349 | ||
7a2a85be | 1350 | fringe_faces [bn] = face_id; |
2d05deef KS |
1351 | |
1352 | return Qnil; | |
1353 | } | |
1354 | ||
1355 | DEFUN ("fringe-bitmaps-at-pos", Ffringe_bitmaps_at_pos, Sfringe_bitmaps_at_pos, | |
1356 | 0, 2, 0, | |
bffe8c26 | 1357 | doc: /* Return fringe bitmaps of row containing position POS in window WINDOW. |
2d05deef KS |
1358 | If WINDOW is nil, use selected window. If POS is nil, use value of point |
1359 | in that window. Return value is a cons (LEFT . RIGHT) where LEFT and RIGHT | |
1360 | are the fringe bitmap numbers for the bitmaps in the left and right fringe, | |
5797a7a0 KS |
1361 | resp. If left or right fringe is empty, the corresponding element is nil. |
1362 | Return nil if POS is not visible in WINDOW. */) | |
2d05deef | 1363 | (pos, window) |
d30b6b33 | 1364 | Lisp_Object pos, window; |
2d05deef KS |
1365 | { |
1366 | struct window *w; | |
2d05deef KS |
1367 | struct glyph_row *row; |
1368 | int textpos; | |
1369 | ||
1370 | if (NILP (window)) | |
1371 | window = selected_window; | |
1372 | CHECK_WINDOW (window); | |
1373 | w = XWINDOW (window); | |
1374 | ||
1375 | if (!NILP (pos)) | |
1376 | { | |
1377 | CHECK_NUMBER_COERCE_MARKER (pos); | |
1378 | textpos = XINT (pos); | |
1379 | } | |
1380 | else if (w == XWINDOW (selected_window)) | |
1381 | textpos = PT; | |
1382 | else | |
1383 | textpos = XMARKER (w->pointm)->charpos; | |
1384 | ||
1385 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
1386 | row = row_containing_pos (w, textpos, row, NULL, 0); | |
1387 | if (row) | |
7a2a85be KS |
1388 | return Fcons (get_fringe_bitmap_name (row->left_fringe_bitmap), |
1389 | get_fringe_bitmap_name (row->right_fringe_bitmap)); | |
2d05deef KS |
1390 | else |
1391 | return Qnil; | |
1392 | } | |
1393 | ||
1394 | ||
1395 | /*********************************************************************** | |
1396 | Initialization | |
1397 | ***********************************************************************/ | |
1398 | ||
1399 | void | |
1400 | syms_of_fringe () | |
1401 | { | |
2d05deef KS |
1402 | defsubr (&Sdestroy_fringe_bitmap); |
1403 | defsubr (&Sdefine_fringe_bitmap); | |
1404 | defsubr (&Sfringe_bitmaps_at_pos); | |
1405 | defsubr (&Sset_fringe_bitmap_face); | |
1406 | ||
1407 | DEFVAR_LISP ("overflow-newline-into-fringe", &Voverflow_newline_into_fringe, | |
1408 | doc: /* *Non-nil means that newline may flow into the right fringe. | |
1409 | This means that display lines which are exactly as wide as the window | |
1410 | (not counting the final newline) will only occupy one screen line, by | |
1411 | showing (or hiding) the final newline in the right fringe; when point | |
1412 | is at the final newline, the cursor is shown in the right fringe. | |
1413 | If nil, also continue lines which are exactly as wide as the window. */); | |
1414 | Voverflow_newline_into_fringe = Qt; | |
1415 | ||
7a2a85be KS |
1416 | DEFVAR_LISP ("fringe-bitmaps", &Vfringe_bitmaps, |
1417 | doc: /* List of fringe bitmap symbols. | |
1418 | You must (require 'fringe) to use fringe bitmap symbols in your programs." */); | |
1419 | Vfringe_bitmaps = Qnil; | |
2d05deef KS |
1420 | } |
1421 | ||
1422 | /* Initialize this module when Emacs starts. */ | |
1423 | ||
1424 | void | |
1425 | init_fringe_once () | |
1426 | { | |
1427 | enum fringe_bitmap_type bt; | |
1428 | ||
1429 | for (bt = NO_FRINGE_BITMAP + 1; bt < MAX_STANDARD_FRINGE_BITMAPS; bt++) | |
1430 | init_fringe_bitmap(bt, &standard_bitmaps[bt], 1); | |
1431 | } | |
1432 | ||
1433 | void | |
1434 | init_fringe () | |
1435 | { | |
1436 | int i; | |
1437 | ||
1438 | bzero (fringe_bitmaps, sizeof fringe_bitmaps); | |
1439 | for (i = 0; i < MAX_FRINGE_BITMAPS; i++) | |
1440 | fringe_faces[i] = FRINGE_FACE_ID; | |
1441 | } | |
1442 | ||
1443 | #ifdef HAVE_NTGUI | |
1444 | ||
1445 | void | |
1446 | w32_init_fringe () | |
1447 | { | |
1448 | enum fringe_bitmap_type bt; | |
1449 | ||
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; | |
bffe8c26 | 1462 | |
2d05deef KS |
1463 | for (bt = NO_FRINGE_BITMAP + 1; bt < max_used_fringe_bitmap; bt++) |
1464 | rif->destroy_fringe_bitmap (bt); | |
1465 | } | |
1466 | ||
bd231131 | 1467 | #endif /* HAVE_NTGUI */ |
2d05deef KS |
1468 | |
1469 | #endif /* HAVE_WINDOW_SYSTEM */ | |
1470 | ||
429e7e2d MB |
1471 | /* arch-tag: 04596920-43eb-473d-b319-82712338162d |
1472 | (do not change this comment) */ |