Commit | Line | Data |
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6b61353c | 1 | /* Fringe handling (split from xdisp.c). |
73b0cd50 | 2 | Copyright (C) 1985-1988, 1993-1995, 1997-2011 Free Software Foundation, Inc. |
6b61353c KH |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
9ec0b715 | 6 | GNU Emacs is free software: you can redistribute it and/or modify |
6b61353c | 7 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
8 | the Free Software Foundation, either version 3 of the License, or |
9 | (at your option) any later version. | |
6b61353c KH |
10 | |
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 17 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
6b61353c KH |
18 | |
19 | #include <config.h> | |
20 | #include <stdio.h> | |
d7306fe6 | 21 | #include <setjmp.h> |
6b61353c KH |
22 | |
23 | #include "lisp.h" | |
24 | #include "frame.h" | |
25 | #include "window.h" | |
26 | #include "dispextern.h" | |
27 | #include "buffer.h" | |
28 | #include "blockinput.h" | |
e581a466 | 29 | #include "termhooks.h" |
6b61353c KH |
30 | |
31 | #ifdef HAVE_WINDOW_SYSTEM | |
32 | ||
7840b332 KS |
33 | /* Fringe bitmaps are represented in three different ways: |
34 | ||
35 | Logical bitmaps are used internally to denote things like | |
36 | 'end-of-buffer', 'left-truncation', 'overlay-arrow', etc. | |
37 | ||
38 | Physical bitmaps specify the visual appearence of the bitmap, | |
39 | e.g. 'bottom-left-angle', 'left-arrow', 'left-triangle', etc. | |
40 | User defined bitmaps are physical bitmaps. | |
41 | ||
42 | Internally, fringe bitmaps for a specific display row are | |
43 | represented as a simple integer that is used as an index | |
44 | into the table of all defined bitmaps. This index is stored | |
45 | in the `fringe' property of the physical bitmap symbol. | |
46 | ||
47 | Logical bitmaps are mapped to physical bitmaps through the | |
48 | buffer-local `fringe-indicator-alist' variable. | |
49 | ||
50 | Each element of this alist is a cons (LOGICAL . PHYSICAL) | |
51 | mapping a logical bitmap to a physical bitmap. | |
52 | PHYSICAL is either a symbol to use in both left and right fringe, | |
53 | or a cons of two symbols (LEFT . RIGHT) denoting different | |
54 | bitmaps to use in left and right fringe. | |
55 | ||
56 | LOGICAL is first looked up in the window's buffer's buffer-local | |
57 | value of the fringe-indicator-alist variable, and if not present, | |
58 | in the global value of fringe-indicator-alist. | |
59 | ||
60 | If LOGICAL is not present in either alist, or the PHYSICAL value | |
61 | found is nil, no bitmap is shown for the logical bitmap. | |
62 | ||
63 | The `left-fringe' and `right-fringe' display properties | |
64 | must specify physical bitmap symbols. | |
65 | */ | |
66 | ||
955cbe7b PE |
67 | static Lisp_Object Qtruncation, Qcontinuation, Qoverlay_arrow; |
68 | static Lisp_Object Qempty_line, Qtop_bottom; | |
69 | static Lisp_Object Qhollow_small; | |
6b61353c KH |
70 | |
71 | enum fringe_bitmap_align | |
72 | { | |
73 | ALIGN_BITMAP_CENTER = 0, | |
74 | ALIGN_BITMAP_TOP, | |
75 | ALIGN_BITMAP_BOTTOM | |
76 | }; | |
77 | ||
78 | struct fringe_bitmap | |
79 | { | |
80 | unsigned short *bits; | |
81 | unsigned height : 8; | |
82 | unsigned width : 8; | |
83 | unsigned period : 8; | |
84 | unsigned align : 2; | |
85 | unsigned dynamic : 1; | |
86 | }; | |
87 | ||
88 | \f | |
89 | /*********************************************************************** | |
90 | Fringe bitmaps | |
91 | ***********************************************************************/ | |
92 | ||
93 | /* Undefined bitmap. A question mark. */ | |
94 | /* | |
95 | ..xxxx.. | |
96 | .xxxxxx. | |
97 | xx....xx | |
98 | xx....xx | |
99 | ....xx.. | |
100 | ...xx... | |
101 | ...xx... | |
102 | ........ | |
103 | ...xx... | |
104 | ...xx... | |
105 | */ | |
7840b332 | 106 | static unsigned short question_mark_bits[] = { |
6b61353c KH |
107 | 0x3c, 0x7e, 0x7e, 0x0c, 0x18, 0x18, 0x00, 0x18, 0x18}; |
108 | ||
109 | /* An arrow like this: `<-'. */ | |
110 | /* | |
111 | ...xx... | |
112 | ..xx.... | |
113 | .xx..... | |
114 | xxxxxx.. | |
115 | xxxxxx.. | |
116 | .xx..... | |
117 | ..xx.... | |
118 | ...xx... | |
119 | */ | |
120 | static unsigned short left_arrow_bits[] = { | |
121 | 0x18, 0x30, 0x60, 0xfc, 0xfc, 0x60, 0x30, 0x18}; | |
122 | ||
123 | ||
124 | /* Right truncation arrow bitmap `->'. */ | |
125 | /* | |
126 | ...xx... | |
127 | ....xx.. | |
128 | .....xx. | |
129 | ..xxxxxx | |
130 | ..xxxxxx | |
131 | .....xx. | |
132 | ....xx.. | |
133 | ...xx... | |
134 | */ | |
135 | static unsigned short right_arrow_bits[] = { | |
136 | 0x18, 0x0c, 0x06, 0x3f, 0x3f, 0x06, 0x0c, 0x18}; | |
137 | ||
138 | ||
139 | /* Up arrow bitmap. */ | |
140 | /* | |
141 | ...xx... | |
142 | ..xxxx.. | |
143 | .xxxxxx. | |
144 | xxxxxxxx | |
145 | ...xx... | |
146 | ...xx... | |
147 | ...xx... | |
148 | ...xx... | |
149 | */ | |
150 | static unsigned short up_arrow_bits[] = { | |
151 | 0x18, 0x3c, 0x7e, 0xff, 0x18, 0x18, 0x18, 0x18}; | |
152 | ||
153 | ||
154 | /* Down arrow bitmap. */ | |
155 | /* | |
156 | ...xx... | |
157 | ...xx... | |
158 | ...xx... | |
159 | ...xx... | |
160 | xxxxxxxx | |
161 | .xxxxxx. | |
162 | ..xxxx.. | |
163 | ...xx... | |
164 | */ | |
165 | static unsigned short down_arrow_bits[] = { | |
166 | 0x18, 0x18, 0x18, 0x18, 0xff, 0x7e, 0x3c, 0x18}; | |
167 | ||
6b61353c KH |
168 | /* Marker for continuation lines. */ |
169 | /* | |
170 | ..xxxx.. | |
171 | .xxxxx.. | |
172 | xx...... | |
173 | xxx..x.. | |
174 | xxxxxx.. | |
175 | .xxxxx.. | |
176 | ..xxxx.. | |
177 | .xxxxx.. | |
178 | */ | |
7840b332 | 179 | static unsigned short left_curly_arrow_bits[] = { |
6b61353c KH |
180 | 0x3c, 0x7c, 0xc0, 0xe4, 0xfc, 0x7c, 0x3c, 0x7c}; |
181 | ||
7840b332 | 182 | /* Marker for continued lines. */ |
6b61353c | 183 | /* |
7840b332 KS |
184 | ..xxxx.. |
185 | ..xxxxx. | |
186 | ......xx | |
187 | ..x..xxx | |
188 | ..xxxxxx | |
189 | ..xxxxx. | |
190 | ..xxxx.. | |
191 | ..xxxxx. | |
6b61353c | 192 | */ |
7840b332 KS |
193 | static unsigned short right_curly_arrow_bits[] = { |
194 | 0x3c, 0x3e, 0x03, 0x27, 0x3f, 0x3e, 0x3c, 0x3e}; | |
6b61353c | 195 | |
6b61353c KH |
196 | /* Reverse Overlay arrow bitmap. A triangular arrow. */ |
197 | /* | |
198 | ......xx | |
199 | ....xxxx | |
200 | ...xxxxx | |
201 | ..xxxxxx | |
202 | ..xxxxxx | |
203 | ...xxxxx | |
204 | ....xxxx | |
205 | ......xx | |
206 | */ | |
7840b332 | 207 | static unsigned short left_triangle_bits[] = { |
6b61353c | 208 | 0x03, 0x0f, 0x1f, 0x3f, 0x3f, 0x1f, 0x0f, 0x03}; |
7840b332 KS |
209 | |
210 | /* Overlay arrow bitmap. A triangular arrow. */ | |
211 | /* | |
212 | xx...... | |
213 | xxxx.... | |
214 | xxxxx... | |
215 | xxxxxx.. | |
216 | xxxxxx.. | |
217 | xxxxx... | |
218 | xxxx.... | |
219 | xx...... | |
220 | */ | |
221 | static unsigned short right_triangle_bits[] = { | |
222 | 0xc0, 0xf0, 0xf8, 0xfc, 0xfc, 0xf8, 0xf0, 0xc0}; | |
6b61353c KH |
223 | |
224 | /* First line bitmap. An top-left angle. */ | |
225 | /* | |
226 | xxxxxx.. | |
227 | xxxxxx.. | |
228 | xx...... | |
229 | xx...... | |
230 | xx...... | |
231 | xx...... | |
232 | xx...... | |
233 | ........ | |
234 | */ | |
235 | static unsigned short top_left_angle_bits[] = { | |
236 | 0xfc, 0xfc, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0x00}; | |
237 | ||
238 | /* First line bitmap. An right-up angle. */ | |
239 | /* | |
240 | ..xxxxxx | |
241 | ..xxxxxx | |
242 | ......xx | |
243 | ......xx | |
244 | ......xx | |
245 | ......xx | |
246 | ......xx | |
247 | ........ | |
248 | */ | |
249 | static unsigned short top_right_angle_bits[] = { | |
250 | 0x3f, 0x3f, 0x03, 0x03, 0x03, 0x03, 0x03, 0x00}; | |
251 | ||
252 | /* Last line bitmap. An left-down angle. */ | |
253 | /* | |
254 | ........ | |
255 | xx...... | |
256 | xx...... | |
257 | xx...... | |
258 | xx...... | |
259 | xx...... | |
260 | xxxxxx.. | |
261 | xxxxxx.. | |
262 | */ | |
263 | static unsigned short bottom_left_angle_bits[] = { | |
264 | 0x00, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xfc, 0xfc}; | |
265 | ||
266 | /* Last line bitmap. An right-down angle. */ | |
267 | /* | |
268 | ........ | |
269 | ......xx | |
270 | ......xx | |
271 | ......xx | |
272 | ......xx | |
273 | ......xx | |
274 | ..xxxxxx | |
275 | ..xxxxxx | |
276 | */ | |
277 | static unsigned short bottom_right_angle_bits[] = { | |
278 | 0x00, 0x03, 0x03, 0x03, 0x03, 0x03, 0x3f, 0x3f}; | |
279 | ||
280 | /* First/last line bitmap. An left bracket. */ | |
281 | /* | |
282 | xxxxxx.. | |
283 | xxxxxx.. | |
284 | xx...... | |
285 | xx...... | |
286 | xx...... | |
287 | xx...... | |
288 | xx...... | |
289 | xx...... | |
290 | xxxxxx.. | |
291 | xxxxxx.. | |
292 | */ | |
293 | static unsigned short left_bracket_bits[] = { | |
294 | 0xfc, 0xfc, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xfc, 0xfc}; | |
295 | ||
296 | /* First/last line bitmap. An right bracket. */ | |
297 | /* | |
298 | ..xxxxxx | |
299 | ..xxxxxx | |
300 | ......xx | |
301 | ......xx | |
302 | ......xx | |
303 | ......xx | |
304 | ......xx | |
305 | ......xx | |
306 | ..xxxxxx | |
307 | ..xxxxxx | |
308 | */ | |
309 | static unsigned short right_bracket_bits[] = { | |
310 | 0x3f, 0x3f, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x3f, 0x3f}; | |
311 | ||
312 | /* Filled box cursor bitmap. A filled box; max 13 pixels high. */ | |
313 | /* | |
314 | xxxxxxx. | |
315 | xxxxxxx. | |
316 | xxxxxxx. | |
317 | xxxxxxx. | |
318 | xxxxxxx. | |
319 | xxxxxxx. | |
320 | xxxxxxx. | |
321 | xxxxxxx. | |
322 | xxxxxxx. | |
323 | xxxxxxx. | |
324 | xxxxxxx. | |
325 | xxxxxxx. | |
326 | xxxxxxx. | |
327 | */ | |
7840b332 | 328 | static unsigned short filled_rectangle_bits[] = { |
6b61353c KH |
329 | 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe}; |
330 | ||
331 | /* Hollow box cursor bitmap. A hollow box; max 13 pixels high. */ | |
332 | /* | |
333 | xxxxxxx. | |
334 | x.....x. | |
335 | x.....x. | |
336 | x.....x. | |
337 | x.....x. | |
338 | x.....x. | |
339 | x.....x. | |
340 | x.....x. | |
341 | x.....x. | |
342 | x.....x. | |
343 | x.....x. | |
344 | x.....x. | |
345 | xxxxxxx. | |
346 | */ | |
7840b332 | 347 | static unsigned short hollow_rectangle_bits[] = { |
6b61353c KH |
348 | 0xfe, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0xfe}; |
349 | ||
7840b332 KS |
350 | /* Hollow square bitmap. */ |
351 | /* | |
352 | .xxxxxx. | |
353 | .x....x. | |
354 | .x....x. | |
355 | .x....x. | |
356 | .x....x. | |
357 | .xxxxxx. | |
358 | */ | |
359 | static unsigned short hollow_square_bits[] = { | |
360 | 0x7e, 0x42, 0x42, 0x42, 0x42, 0x7e}; | |
361 | ||
362 | /* Filled square bitmap. */ | |
363 | /* | |
364 | .xxxxxx. | |
365 | .xxxxxx. | |
366 | .xxxxxx. | |
367 | .xxxxxx. | |
368 | .xxxxxx. | |
369 | .xxxxxx. | |
370 | */ | |
371 | static unsigned short filled_square_bits[] = { | |
372 | 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e}; | |
373 | ||
6b61353c KH |
374 | /* Bar cursor bitmap. A vertical bar; max 13 pixels high. */ |
375 | /* | |
376 | xx...... | |
377 | xx...... | |
378 | xx...... | |
379 | xx...... | |
380 | xx...... | |
381 | xx...... | |
382 | xx...... | |
383 | xx...... | |
384 | xx...... | |
385 | xx...... | |
386 | xx...... | |
387 | xx...... | |
388 | xx...... | |
389 | */ | |
7840b332 | 390 | static unsigned short vertical_bar_bits[] = { |
6b61353c KH |
391 | 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0}; |
392 | ||
68a33afa | 393 | /* HBar cursor bitmap. A horizontal bar; 2 pixels high. */ |
6b61353c KH |
394 | /* |
395 | xxxxxxx. | |
396 | xxxxxxx. | |
397 | */ | |
68a33afa | 398 | static unsigned short horizontal_bar_bits[] = { |
6b61353c KH |
399 | 0xfe, 0xfe}; |
400 | ||
401 | ||
402 | /* Bitmap drawn to indicate lines not displaying text if | |
403 | `indicate-empty-lines' is non-nil. */ | |
404 | /* | |
405 | ........ | |
406 | ..xxxx.. | |
407 | ........ | |
408 | ........ | |
409 | ..xxxx.. | |
410 | ........ | |
411 | */ | |
7840b332 | 412 | static unsigned short empty_line_bits[] = { |
6b61353c KH |
413 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, |
414 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
415 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
416 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
417 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
418 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
419 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
420 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00}; | |
421 | ||
6b61353c KH |
422 | |
423 | #define BYTES_PER_BITMAP_ROW (sizeof (unsigned short)) | |
424 | #define STANDARD_BITMAP_HEIGHT(bits) (sizeof (bits)/BYTES_PER_BITMAP_ROW) | |
425 | #define FRBITS(bits) bits, STANDARD_BITMAP_HEIGHT (bits) | |
426 | ||
7840b332 KS |
427 | /* NOTE: The order of these bitmaps must match the sequence |
428 | used in fringe.el to define the corresponding symbols. */ | |
429 | ||
430 | struct fringe_bitmap standard_bitmaps[] = | |
6b61353c KH |
431 | { |
432 | { NULL, 0, 0, 0, 0, 0 }, /* NO_FRINGE_BITMAP */ | |
7840b332 | 433 | { FRBITS (question_mark_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
6b61353c KH |
434 | { FRBITS (left_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
435 | { FRBITS (right_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
436 | { FRBITS (up_arrow_bits), 8, 0, ALIGN_BITMAP_TOP, 0 }, | |
437 | { FRBITS (down_arrow_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, | |
7840b332 KS |
438 | { FRBITS (left_curly_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
439 | { FRBITS (right_curly_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
440 | { FRBITS (left_triangle_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
441 | { FRBITS (right_triangle_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
6b61353c KH |
442 | { FRBITS (top_left_angle_bits), 8, 0, ALIGN_BITMAP_TOP, 0 }, |
443 | { FRBITS (top_right_angle_bits), 8, 0, ALIGN_BITMAP_TOP, 0 }, | |
444 | { FRBITS (bottom_left_angle_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, | |
445 | { FRBITS (bottom_right_angle_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, | |
446 | { FRBITS (left_bracket_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
447 | { FRBITS (right_bracket_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
7840b332 KS |
448 | { FRBITS (filled_rectangle_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
449 | { FRBITS (hollow_rectangle_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
450 | { FRBITS (filled_square_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
6b61353c | 451 | { FRBITS (hollow_square_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
7840b332 | 452 | { FRBITS (vertical_bar_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
68a33afa | 453 | { FRBITS (horizontal_bar_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, |
7840b332 | 454 | { FRBITS (empty_line_bits), 8, 3, ALIGN_BITMAP_TOP, 0 }, |
6b61353c KH |
455 | }; |
456 | ||
7840b332 KS |
457 | #define NO_FRINGE_BITMAP 0 |
458 | #define UNDEF_FRINGE_BITMAP 1 | |
459 | #define MAX_STANDARD_FRINGE_BITMAPS (sizeof(standard_bitmaps)/sizeof(standard_bitmaps[0])) | |
460 | ||
ad67849e | 461 | static struct fringe_bitmap **fringe_bitmaps; |
49ce2dbd | 462 | static Lisp_Object *fringe_faces; |
ad67849e | 463 | static int max_fringe_bitmaps; |
6b61353c | 464 | |
edfda783 | 465 | int max_used_fringe_bitmap = MAX_STANDARD_FRINGE_BITMAPS; |
6b61353c | 466 | |
4cce0ab7 KS |
467 | |
468 | /* Lookup bitmap number for symbol BITMAP. | |
469 | Return 0 if not a bitmap. */ | |
6b61353c KH |
470 | |
471 | int | |
971de7fb | 472 | lookup_fringe_bitmap (Lisp_Object bitmap) |
7a2a85be KS |
473 | { |
474 | int bn; | |
475 | ||
4cce0ab7 | 476 | bitmap = Fget (bitmap, Qfringe); |
7a2a85be KS |
477 | if (!INTEGERP (bitmap)) |
478 | return 0; | |
479 | ||
480 | bn = XINT (bitmap); | |
4cce0ab7 KS |
481 | if (bn > NO_FRINGE_BITMAP |
482 | && bn < max_used_fringe_bitmap | |
483 | && (bn < MAX_STANDARD_FRINGE_BITMAPS | |
484 | || fringe_bitmaps[bn] != NULL)) | |
485 | return bn; | |
486 | ||
487 | return 0; | |
7a2a85be KS |
488 | } |
489 | ||
490 | /* Get fringe bitmap name for bitmap number BN. | |
491 | ||
492 | Found by traversing Vfringe_bitmaps comparing BN to the | |
493 | fringe property for each symbol. | |
494 | ||
495 | Return BN if not found in Vfringe_bitmaps. */ | |
496 | ||
497 | static Lisp_Object | |
971de7fb | 498 | get_fringe_bitmap_name (int bn) |
7a2a85be KS |
499 | { |
500 | Lisp_Object bitmaps; | |
501 | Lisp_Object num; | |
502 | ||
503 | /* Zero means no bitmap -- return nil. */ | |
504 | if (bn <= 0) | |
505 | return Qnil; | |
506 | ||
507 | bitmaps = Vfringe_bitmaps; | |
508 | num = make_number (bn); | |
509 | ||
510 | while (CONSP (bitmaps)) | |
511 | { | |
512 | Lisp_Object bitmap = XCAR (bitmaps); | |
513 | if (EQ (num, Fget (bitmap, Qfringe))) | |
514 | return bitmap; | |
515 | bitmaps = XCDR (bitmaps); | |
516 | } | |
517 | ||
518 | return num; | |
519 | } | |
520 | ||
521 | ||
6b61353c KH |
522 | /* Draw the bitmap WHICH in one of the left or right fringes of |
523 | window W. ROW is the glyph row for which to display the bitmap; it | |
524 | determines the vertical position at which the bitmap has to be | |
525 | drawn. | |
526 | LEFT_P is 1 for left fringe, 0 for right fringe. | |
527 | */ | |
528 | ||
7840b332 | 529 | static void |
971de7fb | 530 | draw_fringe_bitmap_1 (struct window *w, struct glyph_row *row, int left_p, int overlay, int which) |
6b61353c KH |
531 | { |
532 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
533 | struct draw_fringe_bitmap_params p; | |
534 | struct fringe_bitmap *fb; | |
535 | int period; | |
536 | int face_id = DEFAULT_FACE_ID; | |
5a874e95 | 537 | int offset, header_line_height; |
6b61353c | 538 | |
6b61353c KH |
539 | p.overlay_p = (overlay & 1) == 1; |
540 | p.cursor_p = (overlay & 2) == 2; | |
541 | ||
542 | if (which != NO_FRINGE_BITMAP) | |
543 | { | |
5a874e95 | 544 | offset = 0; |
6b61353c KH |
545 | } |
546 | else if (left_p) | |
547 | { | |
548 | which = row->left_fringe_bitmap; | |
549 | face_id = row->left_fringe_face_id; | |
5a874e95 | 550 | offset = row->left_fringe_offset; |
6b61353c KH |
551 | } |
552 | else | |
553 | { | |
554 | which = row->right_fringe_bitmap; | |
555 | face_id = row->right_fringe_face_id; | |
5a874e95 | 556 | offset = row->right_fringe_offset; |
6b61353c KH |
557 | } |
558 | ||
559 | if (face_id == DEFAULT_FACE_ID) | |
49ce2dbd | 560 | { |
67aecef9 CY |
561 | Lisp_Object face = fringe_faces[which]; |
562 | face_id = NILP (face) ? lookup_named_face (f, Qfringe, 0) | |
563 | : lookup_derived_face (f, face, FRINGE_FACE_ID, 0); | |
564 | if (face_id < 0) | |
49ce2dbd KS |
565 | face_id = FRINGE_FACE_ID; |
566 | } | |
6b61353c KH |
567 | |
568 | fb = fringe_bitmaps[which]; | |
569 | if (fb == NULL) | |
570 | fb = &standard_bitmaps[which < MAX_STANDARD_FRINGE_BITMAPS | |
571 | ? which : UNDEF_FRINGE_BITMAP]; | |
572 | ||
573 | period = fb->period; | |
574 | ||
575 | /* Convert row to frame coordinates. */ | |
5a874e95 | 576 | p.y = WINDOW_TO_FRAME_PIXEL_Y (w, row->y) + offset; |
6b61353c KH |
577 | |
578 | p.which = which; | |
579 | p.bits = fb->bits; | |
580 | p.wd = fb->width; | |
581 | ||
582 | p.h = fb->height; | |
583 | p.dh = (period > 0 ? (p.y % period) : 0); | |
584 | p.h -= p.dh; | |
5a874e95 YM |
585 | |
586 | /* Adjust y to the offset in the row to start drawing the bitmap. */ | |
587 | switch (fb->align) | |
588 | { | |
589 | case ALIGN_BITMAP_CENTER: | |
590 | p.y += (row->height - p.h) / 2; | |
591 | break; | |
592 | case ALIGN_BITMAP_BOTTOM: | |
593 | p.y += (row->visible_height - p.h); | |
594 | break; | |
595 | case ALIGN_BITMAP_TOP: | |
596 | break; | |
597 | } | |
6b61353c KH |
598 | |
599 | p.face = FACE_FROM_ID (f, face_id); | |
600 | ||
601 | if (p.face == NULL) | |
602 | { | |
49ce2dbd KS |
603 | /* This could happen after clearing face cache. |
604 | But it shouldn't happen anymore. ++kfs */ | |
6b61353c KH |
605 | return; |
606 | } | |
607 | ||
608 | PREPARE_FACE_FOR_DISPLAY (f, p.face); | |
609 | ||
610 | /* Clear left fringe if no bitmap to draw or if bitmap doesn't fill | |
611 | the fringe. */ | |
612 | p.bx = -1; | |
5a874e95 YM |
613 | header_line_height = WINDOW_HEADER_LINE_HEIGHT (w); |
614 | p.by = WINDOW_TO_FRAME_PIXEL_Y (w, max (header_line_height, row->y)); | |
615 | p.ny = row->visible_height; | |
6b61353c KH |
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 | ||
5a874e95 | 626 | if (p.wd < wd || p.y > p.by || p.y + p.h < p.by + p.ny) |
6b61353c KH |
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. */ | |
5a874e95 | 648 | if (p.wd < wd || p.y > p.by || p.y + p.h < p.by + p.ny) |
6b61353c KH |
649 | { |
650 | p.bx = x; | |
651 | p.nx = wd; | |
652 | } | |
653 | } | |
654 | ||
e581a466 | 655 | FRAME_RIF (f)->draw_fringe_bitmap (w, row, &p); |
6b61353c KH |
656 | } |
657 | ||
7840b332 | 658 | static int |
971de7fb | 659 | get_logical_cursor_bitmap (struct window *w, Lisp_Object cursor) |
7840b332 KS |
660 | { |
661 | Lisp_Object cmap, bm = Qnil; | |
662 | ||
4b4deea2 | 663 | if ((cmap = BVAR (XBUFFER (w->buffer), fringe_cursor_alist)), !NILP (cmap)) |
7840b332 KS |
664 | { |
665 | bm = Fassq (cursor, cmap); | |
666 | if (CONSP (bm)) | |
667 | { | |
668 | if ((bm = XCDR (bm)), NILP (bm)) | |
669 | return NO_FRINGE_BITMAP; | |
670 | return lookup_fringe_bitmap (bm); | |
671 | } | |
672 | } | |
4b4deea2 | 673 | if (EQ (cmap, BVAR (&buffer_defaults, fringe_cursor_alist))) |
7840b332 | 674 | return NO_FRINGE_BITMAP; |
4b4deea2 | 675 | bm = Fassq (cursor, BVAR (&buffer_defaults, fringe_cursor_alist)); |
7840b332 KS |
676 | if (!CONSP (bm) || ((bm = XCDR (bm)), NILP (bm))) |
677 | return NO_FRINGE_BITMAP; | |
678 | return lookup_fringe_bitmap (bm); | |
679 | } | |
680 | ||
681 | static int | |
971de7fb | 682 | get_logical_fringe_bitmap (struct window *w, Lisp_Object bitmap, int right_p, int partial_p) |
7840b332 KS |
683 | { |
684 | Lisp_Object cmap, bm1 = Qnil, bm2 = Qnil, bm; | |
685 | int ln1 = 0, ln2 = 0; | |
686 | int ix1 = right_p; | |
687 | int ix2 = ix1 + (partial_p ? 2 : 0); | |
688 | ||
689 | /* Lookup in buffer-local fringe-indicator-alist before global alist. | |
690 | ||
691 | Elements are: | |
692 | BITMAP -- use for all | |
693 | (L R) -- use for left right (whether partial or not) | |
78edd3b7 | 694 | (L R PL PR) -- use for left right partial-left partial-right |
7840b332 KS |
695 | If any value in local binding is not present or t, use global value. |
696 | ||
697 | If partial, lookup partial bitmap in default value if not found here. | |
698 | If not partial, or no partial spec is present, use non-partial bitmap. */ | |
699 | ||
4b4deea2 | 700 | if ((cmap = BVAR (XBUFFER (w->buffer), fringe_indicator_alist)), !NILP (cmap)) |
7840b332 KS |
701 | { |
702 | bm1 = Fassq (bitmap, cmap); | |
703 | if (CONSP (bm1)) | |
704 | { | |
705 | if ((bm1 = XCDR (bm1)), NILP (bm1)) | |
706 | return NO_FRINGE_BITMAP; | |
707 | if (CONSP (bm1)) | |
708 | { | |
709 | ln1 = XINT (Flength (bm1)); | |
710 | if (partial_p) | |
711 | { | |
712 | if (ln1 > ix2) | |
713 | { | |
714 | bm = Fnth (make_number (ix2), bm1); | |
715 | if (!EQ (bm, Qt)) | |
716 | goto found; | |
717 | } | |
718 | } | |
719 | else | |
720 | { | |
721 | if (ln1 > ix1) | |
722 | { | |
723 | bm = Fnth (make_number (ix1), bm1); | |
724 | if (!EQ (bm, Qt)) | |
725 | goto found; | |
726 | } | |
727 | } | |
728 | } | |
729 | else if ((bm = bm1, !EQ (bm, Qt))) | |
730 | goto found; | |
731 | } | |
732 | } | |
733 | ||
4b4deea2 TT |
734 | if (!EQ (cmap, BVAR (&buffer_defaults, fringe_indicator_alist)) |
735 | && !NILP (BVAR (&buffer_defaults, fringe_indicator_alist))) | |
7840b332 | 736 | { |
4b4deea2 | 737 | bm2 = Fassq (bitmap, BVAR (&buffer_defaults, fringe_indicator_alist)); |
7840b332 KS |
738 | if (CONSP (bm2)) |
739 | { | |
740 | if ((bm2 = XCDR (bm2)), !NILP (bm2)) | |
741 | { | |
742 | if (CONSP (bm2)) | |
743 | { | |
744 | ln2 = XINT (Flength (bm2)); | |
745 | if (partial_p) | |
746 | { | |
747 | if (ln2 > ix2) | |
748 | { | |
749 | bm = Fnth (make_number (ix2), bm2); | |
750 | if (!EQ (bm, Qt)) | |
751 | goto found; | |
752 | } | |
753 | } | |
754 | } | |
755 | } | |
756 | } | |
757 | } | |
758 | ||
759 | if (ln1 > ix1) | |
760 | { | |
761 | bm = Fnth (make_number (ix1), bm1); | |
762 | if (!EQ (bm, Qt)) | |
763 | goto found; | |
764 | } | |
765 | ||
766 | if (ln2 > ix1) | |
767 | { | |
768 | bm = Fnth (make_number (ix1), bm2); | |
769 | if (!EQ (bm, Qt)) | |
770 | goto found; | |
771 | return NO_FRINGE_BITMAP; | |
772 | } | |
773 | else if ((bm = bm2, NILP (bm))) | |
774 | return NO_FRINGE_BITMAP; | |
775 | ||
776 | found: | |
777 | return lookup_fringe_bitmap (bm); | |
778 | } | |
779 | ||
780 | ||
6b61353c | 781 | void |
971de7fb | 782 | draw_fringe_bitmap (struct window *w, struct glyph_row *row, int left_p) |
6b61353c KH |
783 | { |
784 | int overlay = 0; | |
785 | ||
f951a506 | 786 | if (left_p == row->reversed_p && row->cursor_in_fringe_p) |
6b61353c | 787 | { |
7840b332 | 788 | Lisp_Object cursor = Qnil; |
6b61353c KH |
789 | |
790 | switch (w->phys_cursor_type) | |
791 | { | |
792 | case HOLLOW_BOX_CURSOR: | |
7840b332 KS |
793 | if (row->visible_height >= STANDARD_BITMAP_HEIGHT (hollow_rectangle_bits)) |
794 | cursor = Qhollow; | |
6b61353c | 795 | else |
7840b332 | 796 | cursor = Qhollow_small; |
6b61353c KH |
797 | break; |
798 | case FILLED_BOX_CURSOR: | |
7840b332 | 799 | cursor = Qbox; |
6b61353c KH |
800 | break; |
801 | case BAR_CURSOR: | |
7840b332 | 802 | cursor = Qbar; |
6b61353c KH |
803 | break; |
804 | case HBAR_CURSOR: | |
7840b332 | 805 | cursor = Qhbar; |
6b61353c KH |
806 | break; |
807 | case NO_CURSOR: | |
808 | default: | |
809 | w->phys_cursor_on_p = 0; | |
810 | row->cursor_in_fringe_p = 0; | |
811 | break; | |
812 | } | |
7840b332 | 813 | if (!NILP (cursor)) |
6b61353c | 814 | { |
7840b332 KS |
815 | int bm = get_logical_cursor_bitmap (w, cursor); |
816 | if (bm != NO_FRINGE_BITMAP) | |
817 | { | |
f951a506 | 818 | draw_fringe_bitmap_1 (w, row, left_p, 2, bm); |
7840b332 KS |
819 | overlay = EQ (cursor, Qbox) ? 3 : 1; |
820 | } | |
6b61353c KH |
821 | } |
822 | } | |
823 | ||
824 | draw_fringe_bitmap_1 (w, row, left_p, overlay, NO_FRINGE_BITMAP); | |
825 | ||
a8b34fae | 826 | if (left_p && row->overlay_arrow_bitmap != NO_FRINGE_BITMAP) |
7dfa5c49 | 827 | draw_fringe_bitmap_1 (w, row, 1, 1, row->overlay_arrow_bitmap); |
6b61353c KH |
828 | } |
829 | ||
830 | ||
831 | /* Draw fringe bitmaps for glyph row ROW on window W. Call this | |
832 | function with input blocked. */ | |
833 | ||
834 | void | |
971de7fb | 835 | draw_row_fringe_bitmaps (struct window *w, struct glyph_row *row) |
6b61353c KH |
836 | { |
837 | xassert (interrupt_input_blocked); | |
838 | ||
839 | /* If row is completely invisible, because of vscrolling, we | |
840 | don't have to draw anything. */ | |
841 | if (row->visible_height <= 0) | |
842 | return; | |
843 | ||
844 | if (WINDOW_LEFT_FRINGE_WIDTH (w) != 0) | |
845 | draw_fringe_bitmap (w, row, 1); | |
846 | ||
847 | if (WINDOW_RIGHT_FRINGE_WIDTH (w) != 0) | |
848 | draw_fringe_bitmap (w, row, 0); | |
849 | } | |
850 | ||
851 | /* Draw the fringes of window W. Only fringes for rows marked for | |
11491cbb | 852 | update in redraw_fringe_bitmaps_p are drawn. |
6b61353c | 853 | |
11491cbb KS |
854 | Return >0 if left or right fringe was redrawn in any way. |
855 | ||
856 | If NO_FRINGE is non-zero, also return >0 if either fringe has zero width. | |
857 | ||
858 | A return value >0 indicates that the vertical line between windows | |
859 | needs update (as it may be drawn in the fringe). | |
860 | */ | |
861 | ||
862 | int | |
971de7fb | 863 | draw_window_fringes (struct window *w, int no_fringe) |
6b61353c KH |
864 | { |
865 | struct glyph_row *row; | |
866 | int yb = window_text_bottom_y (w); | |
867 | int nrows = w->current_matrix->nrows; | |
5a874e95 | 868 | int y, rn; |
11491cbb | 869 | int updated = 0; |
6b61353c KH |
870 | |
871 | if (w->pseudo_window_p) | |
11491cbb KS |
872 | return 0; |
873 | ||
874 | /* Must draw line if no fringe */ | |
875 | if (no_fringe | |
876 | && (WINDOW_LEFT_FRINGE_WIDTH (w) == 0 | |
877 | || WINDOW_RIGHT_FRINGE_WIDTH (w) == 0)) | |
878 | updated++; | |
6b61353c | 879 | |
5a874e95 | 880 | for (y = w->vscroll, rn = 0, row = w->current_matrix->rows; |
6b61353c KH |
881 | y < yb && rn < nrows; |
882 | y += row->height, ++row, ++rn) | |
883 | { | |
884 | if (!row->redraw_fringe_bitmaps_p) | |
885 | continue; | |
886 | draw_row_fringe_bitmaps (w, row); | |
887 | row->redraw_fringe_bitmaps_p = 0; | |
11491cbb | 888 | updated++; |
6b61353c | 889 | } |
11491cbb KS |
890 | |
891 | return updated; | |
6b61353c KH |
892 | } |
893 | ||
894 | ||
895 | /* Recalculate the bitmaps to show in the fringes of window W. | |
4dadc129 KS |
896 | Only mark rows with modified bitmaps for update in redraw_fringe_bitmaps_p. |
897 | ||
898 | If KEEP_CURRENT_P is 0, update current_matrix too. */ | |
6b61353c KH |
899 | |
900 | int | |
971de7fb | 901 | update_window_fringes (struct window *w, int keep_current_p) |
6b61353c KH |
902 | { |
903 | struct glyph_row *row, *cur = 0; | |
904 | int yb = window_text_bottom_y (w); | |
905 | int rn, nrows = w->current_matrix->nrows; | |
906 | int y; | |
907 | int redraw_p = 0; | |
5797a7a0 KS |
908 | Lisp_Object boundary_top = Qnil, boundary_bot = Qnil; |
909 | Lisp_Object arrow_top = Qnil, arrow_bot = Qnil; | |
910 | Lisp_Object empty_pos; | |
911 | Lisp_Object ind = Qnil; | |
7840b332 KS |
912 | #define MAX_BITMAP_CACHE (8*4) |
913 | int bitmap_cache[MAX_BITMAP_CACHE]; | |
5a874e95 YM |
914 | int top_ind_rn, bot_ind_rn; |
915 | int top_ind_min_y, bot_ind_max_y; | |
40714c53 PE |
916 | |
917 | /* top_ind_rn is set to a nonnegative value whenver | |
918 | row->indicate_bob_p is set, so it's OK that top_row_ends_at_zv_p | |
919 | is not initialized here. Similarly for bot_ind_rn, | |
920 | row->indicate_eob_p and bot_row_ends_at_zv_p. */ | |
4b1ec863 | 921 | int top_row_ends_at_zv_p IF_LINT (= 0), bot_row_ends_at_zv_p IF_LINT (= 0); |
6b61353c KH |
922 | |
923 | if (w->pseudo_window_p) | |
924 | return 0; | |
925 | ||
926 | if (!MINI_WINDOW_P (w) | |
4b4deea2 | 927 | && (ind = BVAR (XBUFFER (w->buffer), indicate_buffer_boundaries), !NILP (ind))) |
6b61353c | 928 | { |
5797a7a0 KS |
929 | if (EQ (ind, Qleft) || EQ (ind, Qright)) |
930 | boundary_top = boundary_bot = arrow_top = arrow_bot = ind; | |
931 | else if (CONSP (ind) && CONSP (XCAR (ind))) | |
932 | { | |
933 | Lisp_Object pos; | |
934 | if (pos = Fassq (Qt, ind), !NILP (pos)) | |
935 | boundary_top = boundary_bot = arrow_top = arrow_bot = XCDR (pos); | |
936 | if (pos = Fassq (Qtop, ind), !NILP (pos)) | |
937 | boundary_top = XCDR (pos); | |
938 | if (pos = Fassq (Qbottom, ind), !NILP (pos)) | |
939 | boundary_bot = XCDR (pos); | |
940 | if (pos = Fassq (Qup, ind), !NILP (pos)) | |
941 | arrow_top = XCDR (pos); | |
942 | if (pos = Fassq (Qdown, ind), !NILP (pos)) | |
943 | arrow_bot = XCDR (pos); | |
944 | } | |
6b61353c | 945 | else |
a208b89c KS |
946 | /* Anything else means boundary on left and no arrows. */ |
947 | boundary_top = boundary_bot = Qleft; | |
5797a7a0 | 948 | } |
6b61353c | 949 | |
5a874e95 | 950 | top_ind_rn = bot_ind_rn = -1; |
5797a7a0 KS |
951 | if (!NILP (ind)) |
952 | { | |
5a874e95 | 953 | for (y = w->vscroll, rn = 0; |
6b61353c KH |
954 | y < yb && rn < nrows; |
955 | y += row->height, ++rn) | |
956 | { | |
6b61353c KH |
957 | row = w->desired_matrix->rows + rn; |
958 | if (!row->enabled_p) | |
959 | row = w->current_matrix->rows + rn; | |
960 | ||
6b61353c KH |
961 | row->indicate_bob_p = row->indicate_top_line_p = 0; |
962 | row->indicate_eob_p = row->indicate_bottom_line_p = 0; | |
963 | ||
26a5d440 KS |
964 | if (!row->mode_line_p) |
965 | { | |
5a874e95 | 966 | if (top_ind_rn < 0 && row->visible_height > 0) |
26a5d440 | 967 | { |
18e1c39a KS |
968 | if (MATRIX_ROW_START_CHARPOS (row) <= BUF_BEGV (XBUFFER (w->buffer)) |
969 | && !MATRIX_ROW_PARTIALLY_VISIBLE_AT_TOP_P (w, row)) | |
26a5d440 KS |
970 | row->indicate_bob_p = !NILP (boundary_top); |
971 | else | |
972 | row->indicate_top_line_p = !NILP (arrow_top); | |
5a874e95 | 973 | top_ind_rn = rn; |
26a5d440 | 974 | } |
6b61353c | 975 | |
5a874e95 | 976 | if (bot_ind_rn < 0) |
26a5d440 | 977 | { |
18e1c39a KS |
978 | if (MATRIX_ROW_END_CHARPOS (row) >= BUF_ZV (XBUFFER (w->buffer)) |
979 | && !MATRIX_ROW_PARTIALLY_VISIBLE_AT_BOTTOM_P (w, row)) | |
5a874e95 | 980 | row->indicate_eob_p = !NILP (boundary_bot), bot_ind_rn = rn; |
26a5d440 | 981 | else if (y + row->height >= yb) |
5a874e95 | 982 | row->indicate_bottom_line_p = !NILP (arrow_bot), bot_ind_rn = rn; |
26a5d440 KS |
983 | } |
984 | } | |
6b61353c KH |
985 | } |
986 | } | |
987 | ||
4b4deea2 | 988 | empty_pos = BVAR (XBUFFER (w->buffer), indicate_empty_lines); |
5797a7a0 KS |
989 | if (!NILP (empty_pos) && !EQ (empty_pos, Qright)) |
990 | empty_pos = WINDOW_LEFT_FRINGE_WIDTH (w) == 0 ? Qright : Qleft; | |
6b61353c | 991 | |
7840b332 KS |
992 | for (y = 0; y < MAX_BITMAP_CACHE; y++) |
993 | bitmap_cache[y] = -1; | |
994 | ||
995 | #define LEFT_FRINGE(cache, which, partial_p) \ | |
996 | (bitmap_cache[cache*4+partial_p] >= 0 \ | |
997 | ? bitmap_cache[cache*4+partial_p] \ | |
998 | : (bitmap_cache[cache*4+partial_p] = \ | |
999 | get_logical_fringe_bitmap (w, which, 0, partial_p))) | |
1000 | ||
1001 | #define RIGHT_FRINGE(cache, which, partial_p) \ | |
1002 | (bitmap_cache[cache*4+2+partial_p] >= 0 \ | |
1003 | ? bitmap_cache[cache*4+2+partial_p] \ | |
1004 | : (bitmap_cache[cache*4+2+partial_p] = \ | |
1005 | get_logical_fringe_bitmap (w, which, 1, partial_p))) | |
1006 | ||
1007 | ||
5a874e95 YM |
1008 | /* Extend top-aligned top indicator (or bottom-aligned bottom |
1009 | indicator) to adjacent rows if it doesn't fit in one row. */ | |
1010 | top_ind_min_y = bot_ind_max_y = -1; | |
1011 | if (top_ind_rn >= 0) | |
1012 | { | |
1013 | int bn = NO_FRINGE_BITMAP; | |
1014 | ||
1015 | row = w->desired_matrix->rows + top_ind_rn; | |
1016 | if (!row->enabled_p) | |
1017 | row = w->current_matrix->rows + top_ind_rn; | |
1018 | ||
1019 | top_row_ends_at_zv_p = row->ends_at_zv_p; | |
1020 | if (row->indicate_bob_p) | |
1021 | { | |
1022 | if (EQ (boundary_top, Qleft)) | |
1023 | bn = ((row->indicate_eob_p && EQ (boundary_bot, Qleft)) | |
1024 | ? LEFT_FRINGE (1, Qtop_bottom, row->ends_at_zv_p) | |
1025 | : LEFT_FRINGE (2, Qtop, 0)); | |
1026 | else | |
1027 | bn = ((row->indicate_eob_p && EQ (boundary_bot, Qright)) | |
1028 | ? RIGHT_FRINGE (1, Qtop_bottom, row->ends_at_zv_p) | |
1029 | : RIGHT_FRINGE (2, Qtop, 0)); | |
1030 | } | |
1031 | else if (row->indicate_top_line_p) | |
1032 | { | |
1033 | if (EQ (arrow_top, Qleft)) | |
1034 | bn = LEFT_FRINGE (6, Qup, 0); | |
1035 | else | |
1036 | bn = RIGHT_FRINGE (6, Qup, 0); | |
1037 | } | |
1038 | ||
1039 | if (bn != NO_FRINGE_BITMAP) | |
1040 | { | |
1041 | struct fringe_bitmap *fb; | |
1042 | ||
1043 | fb = fringe_bitmaps[bn]; | |
1044 | if (fb == NULL) | |
1045 | fb = &standard_bitmaps[bn < MAX_STANDARD_FRINGE_BITMAPS | |
1046 | ? bn : UNDEF_FRINGE_BITMAP]; | |
1047 | if (fb->align == ALIGN_BITMAP_TOP && fb->period == 0) | |
1048 | { | |
1049 | struct glyph_row *row1; | |
1050 | int top_ind_max_y; | |
1051 | ||
1052 | top_ind_min_y = WINDOW_HEADER_LINE_HEIGHT (w); | |
1053 | top_ind_max_y = top_ind_min_y + fb->height; | |
1054 | if (top_ind_max_y > yb) | |
1055 | top_ind_max_y = yb; | |
1056 | ||
1057 | for (y = row->y + row->height, rn = top_ind_rn + 1; | |
1058 | y < top_ind_max_y && rn < nrows; | |
1059 | y += row1->height, rn++) | |
1060 | { | |
1061 | if (bot_ind_rn >= 0 && rn >= bot_ind_rn) | |
1062 | break; | |
1063 | ||
1064 | row1 = w->desired_matrix->rows + rn; | |
1065 | if (!row1->enabled_p) | |
1066 | row1 = w->current_matrix->rows + rn; | |
1067 | ||
1068 | row1->indicate_bob_p = row->indicate_bob_p; | |
1069 | row1->indicate_top_line_p = row->indicate_top_line_p; | |
1070 | } | |
1071 | } | |
1072 | } | |
1073 | } | |
1074 | if (bot_ind_rn >= 0) | |
1075 | { | |
1076 | int bn = NO_FRINGE_BITMAP; | |
1077 | ||
1078 | row = w->desired_matrix->rows + bot_ind_rn; | |
1079 | if (!row->enabled_p) | |
1080 | row = w->current_matrix->rows + bot_ind_rn; | |
1081 | ||
1082 | bot_row_ends_at_zv_p = row->ends_at_zv_p; | |
1083 | if (row->indicate_eob_p) | |
1084 | { | |
1085 | if (EQ (boundary_bot, Qleft)) | |
1086 | bn = LEFT_FRINGE (3, Qbottom, row->ends_at_zv_p); | |
1087 | else | |
1088 | bn = RIGHT_FRINGE (3, Qbottom, row->ends_at_zv_p); | |
1089 | } | |
1090 | else if (row->indicate_bottom_line_p) | |
1091 | { | |
1092 | if (EQ (arrow_bot, Qleft)) | |
1093 | bn = LEFT_FRINGE (7, Qdown, 0); | |
1094 | else | |
1095 | bn = RIGHT_FRINGE (7, Qdown, 0); | |
1096 | } | |
1097 | ||
1098 | if (bn != NO_FRINGE_BITMAP) | |
1099 | { | |
1100 | struct fringe_bitmap *fb; | |
1101 | ||
1102 | fb = fringe_bitmaps[bn]; | |
1103 | if (fb == NULL) | |
1104 | fb = &standard_bitmaps[bn < MAX_STANDARD_FRINGE_BITMAPS | |
1105 | ? bn : UNDEF_FRINGE_BITMAP]; | |
1106 | if (fb->align == ALIGN_BITMAP_BOTTOM && fb->period == 0) | |
1107 | { | |
1108 | struct glyph_row *row1; | |
1109 | int bot_ind_min_y; | |
1110 | ||
1111 | bot_ind_max_y = row->y + row->visible_height; | |
1112 | bot_ind_min_y = bot_ind_max_y - fb->height; | |
1113 | if (bot_ind_min_y < WINDOW_HEADER_LINE_HEIGHT (w)) | |
1114 | bot_ind_min_y = WINDOW_HEADER_LINE_HEIGHT (w); | |
1115 | ||
1116 | for (y = row->y, rn = bot_ind_rn - 1; | |
1117 | y >= bot_ind_min_y && rn >= 0; | |
1118 | y -= row1->height, rn--) | |
1119 | { | |
1120 | if (top_ind_rn >= 0 && rn <= top_ind_rn) | |
1121 | break; | |
1122 | ||
1123 | row1 = w->desired_matrix->rows + rn; | |
1124 | if (!row1->enabled_p) | |
1125 | row1 = w->current_matrix->rows + rn; | |
1126 | ||
1127 | row1->indicate_eob_p = row->indicate_eob_p; | |
1128 | row1->indicate_bottom_line_p = row->indicate_bottom_line_p; | |
1129 | } | |
1130 | } | |
1131 | } | |
1132 | } | |
1133 | ||
1134 | for (y = w->vscroll, rn = 0; | |
6b61353c KH |
1135 | y < yb && rn < nrows; |
1136 | y += row->height, rn++) | |
1137 | { | |
7840b332 | 1138 | int left, right; |
6b61353c | 1139 | unsigned left_face_id, right_face_id; |
5a874e95 | 1140 | int left_offset, right_offset; |
6b61353c KH |
1141 | |
1142 | row = w->desired_matrix->rows + rn; | |
1143 | cur = w->current_matrix->rows + rn; | |
1144 | if (!row->enabled_p) | |
1145 | row = cur; | |
1146 | ||
1147 | left_face_id = right_face_id = DEFAULT_FACE_ID; | |
5a874e95 | 1148 | left_offset = right_offset = 0; |
6b61353c KH |
1149 | |
1150 | /* Decide which bitmap to draw in the left fringe. */ | |
1151 | if (WINDOW_LEFT_FRINGE_WIDTH (w) == 0) | |
1152 | left = NO_FRINGE_BITMAP; | |
1153 | else if (row->left_user_fringe_bitmap != NO_FRINGE_BITMAP) | |
1154 | { | |
1155 | left = row->left_user_fringe_bitmap; | |
1156 | left_face_id = row->left_user_fringe_face_id; | |
1157 | } | |
96d79611 EZ |
1158 | else if ((!row->reversed_p && row->truncated_on_left_p) |
1159 | || (row->reversed_p && row->truncated_on_right_p)) | |
7840b332 | 1160 | left = LEFT_FRINGE(0, Qtruncation, 0); |
5797a7a0 | 1161 | else if (row->indicate_bob_p && EQ (boundary_top, Qleft)) |
5a874e95 YM |
1162 | { |
1163 | left = ((row->indicate_eob_p && EQ (boundary_bot, Qleft)) | |
1164 | ? LEFT_FRINGE (1, Qtop_bottom, top_row_ends_at_zv_p) | |
1165 | : LEFT_FRINGE (2, Qtop, 0)); | |
1166 | if (top_ind_min_y >= 0) | |
1167 | left_offset = top_ind_min_y - row->y; | |
1168 | } | |
5797a7a0 | 1169 | else if (row->indicate_eob_p && EQ (boundary_bot, Qleft)) |
5a874e95 YM |
1170 | { |
1171 | left = LEFT_FRINGE (3, Qbottom, bot_row_ends_at_zv_p); | |
1172 | if (bot_ind_max_y >= 0) | |
1173 | left_offset = bot_ind_max_y - (row->y + row->visible_height); | |
1174 | } | |
c4affd2c EZ |
1175 | else if ((!row->reversed_p && MATRIX_ROW_CONTINUATION_LINE_P (row)) |
1176 | || (row->reversed_p && row->continued_p)) | |
7840b332 | 1177 | left = LEFT_FRINGE (4, Qcontinuation, 0); |
5797a7a0 | 1178 | else if (row->indicate_empty_line_p && EQ (empty_pos, Qleft)) |
7840b332 | 1179 | left = LEFT_FRINGE (5, Qempty_line, 0); |
5797a7a0 | 1180 | else if (row->indicate_top_line_p && EQ (arrow_top, Qleft)) |
5a874e95 YM |
1181 | { |
1182 | left = LEFT_FRINGE (6, Qup, 0); | |
1183 | if (top_ind_min_y >= 0) | |
1184 | left_offset = top_ind_min_y - row->y; | |
1185 | } | |
5797a7a0 | 1186 | else if (row->indicate_bottom_line_p && EQ (arrow_bot, Qleft)) |
5a874e95 YM |
1187 | { |
1188 | left = LEFT_FRINGE (7, Qdown, 0); | |
1189 | if (bot_ind_max_y >= 0) | |
1190 | left_offset = bot_ind_max_y - (row->y + row->visible_height); | |
1191 | } | |
6b61353c KH |
1192 | else |
1193 | left = NO_FRINGE_BITMAP; | |
1194 | ||
1195 | /* Decide which bitmap to draw in the right fringe. */ | |
1196 | if (WINDOW_RIGHT_FRINGE_WIDTH (w) == 0) | |
1197 | right = NO_FRINGE_BITMAP; | |
1198 | else if (row->right_user_fringe_bitmap != NO_FRINGE_BITMAP) | |
1199 | { | |
1200 | right = row->right_user_fringe_bitmap; | |
1201 | right_face_id = row->right_user_fringe_face_id; | |
1202 | } | |
96d79611 EZ |
1203 | else if ((!row->reversed_p && row->truncated_on_right_p) |
1204 | || (row->reversed_p && row->truncated_on_left_p)) | |
7840b332 | 1205 | right = RIGHT_FRINGE (0, Qtruncation, 0); |
5797a7a0 | 1206 | else if (row->indicate_bob_p && EQ (boundary_top, Qright)) |
5a874e95 YM |
1207 | { |
1208 | right = ((row->indicate_eob_p && EQ (boundary_bot, Qright)) | |
1209 | ? RIGHT_FRINGE (1, Qtop_bottom, top_row_ends_at_zv_p) | |
1210 | : RIGHT_FRINGE (2, Qtop, 0)); | |
1211 | if (top_ind_min_y >= 0) | |
1212 | right_offset = top_ind_min_y - row->y; | |
1213 | } | |
5797a7a0 | 1214 | else if (row->indicate_eob_p && EQ (boundary_bot, Qright)) |
5a874e95 YM |
1215 | { |
1216 | right = RIGHT_FRINGE (3, Qbottom, bot_row_ends_at_zv_p); | |
1217 | if (bot_ind_max_y >= 0) | |
1218 | right_offset = bot_ind_max_y - (row->y + row->visible_height); | |
1219 | } | |
c4affd2c EZ |
1220 | else if ((!row->reversed_p && row->continued_p) |
1221 | || (row->reversed_p && MATRIX_ROW_CONTINUATION_LINE_P (row))) | |
7840b332 | 1222 | right = RIGHT_FRINGE (4, Qcontinuation, 0); |
5797a7a0 | 1223 | else if (row->indicate_top_line_p && EQ (arrow_top, Qright)) |
5a874e95 YM |
1224 | { |
1225 | right = RIGHT_FRINGE (6, Qup, 0); | |
1226 | if (top_ind_min_y >= 0) | |
1227 | right_offset = top_ind_min_y - row->y; | |
1228 | } | |
5797a7a0 | 1229 | else if (row->indicate_bottom_line_p && EQ (arrow_bot, Qright)) |
5a874e95 YM |
1230 | { |
1231 | right = RIGHT_FRINGE (7, Qdown, 0); | |
1232 | if (bot_ind_max_y >= 0) | |
1233 | right_offset = bot_ind_max_y - (row->y + row->visible_height); | |
1234 | } | |
5797a7a0 | 1235 | else if (row->indicate_empty_line_p && EQ (empty_pos, Qright)) |
7840b332 | 1236 | right = RIGHT_FRINGE (5, Qempty_line, 0); |
6b61353c KH |
1237 | else |
1238 | right = NO_FRINGE_BITMAP; | |
1239 | ||
4dadc129 | 1240 | if (row->y != cur->y |
6b61353c | 1241 | || row->visible_height != cur->visible_height |
81544a1d | 1242 | || row->ends_at_zv_p != cur->ends_at_zv_p |
6b61353c KH |
1243 | || left != cur->left_fringe_bitmap |
1244 | || right != cur->right_fringe_bitmap | |
1245 | || left_face_id != cur->left_fringe_face_id | |
1246 | || right_face_id != cur->right_fringe_face_id | |
5a874e95 YM |
1247 | || left_offset != cur->left_fringe_offset |
1248 | || right_offset != cur->right_fringe_offset | |
6b61353c KH |
1249 | || cur->redraw_fringe_bitmaps_p) |
1250 | { | |
4dadc129 KS |
1251 | redraw_p = row->redraw_fringe_bitmaps_p = 1; |
1252 | if (!keep_current_p) | |
1253 | { | |
1254 | cur->redraw_fringe_bitmaps_p = 1; | |
1255 | cur->left_fringe_bitmap = left; | |
1256 | cur->right_fringe_bitmap = right; | |
1257 | cur->left_fringe_face_id = left_face_id; | |
1258 | cur->right_fringe_face_id = right_face_id; | |
5a874e95 YM |
1259 | cur->left_fringe_offset = left_offset; |
1260 | cur->right_fringe_offset = right_offset; | |
4dadc129 | 1261 | } |
6b61353c KH |
1262 | } |
1263 | ||
7dfa5c49 KS |
1264 | if (row->overlay_arrow_bitmap < 0) |
1265 | row->overlay_arrow_bitmap = get_logical_fringe_bitmap (w, Qoverlay_arrow, 0, 0); | |
1266 | ||
a8b34fae | 1267 | if (row->overlay_arrow_bitmap != cur->overlay_arrow_bitmap) |
6b61353c KH |
1268 | { |
1269 | redraw_p = row->redraw_fringe_bitmaps_p = cur->redraw_fringe_bitmaps_p = 1; | |
a8b34fae | 1270 | cur->overlay_arrow_bitmap = row->overlay_arrow_bitmap; |
6b61353c KH |
1271 | } |
1272 | ||
1273 | row->left_fringe_bitmap = left; | |
1274 | row->right_fringe_bitmap = right; | |
1275 | row->left_fringe_face_id = left_face_id; | |
1276 | row->right_fringe_face_id = right_face_id; | |
5a874e95 YM |
1277 | row->left_fringe_offset = left_offset; |
1278 | row->right_fringe_offset = right_offset; | |
6b61353c KH |
1279 | } |
1280 | ||
4dadc129 | 1281 | return redraw_p && !keep_current_p; |
6b61353c KH |
1282 | } |
1283 | ||
1284 | ||
1285 | /* Compute actual fringe widths for frame F. | |
1286 | ||
1287 | If REDRAW is 1, redraw F if the fringe settings was actually | |
1288 | modified and F is visible. | |
1289 | ||
1290 | Since the combined left and right fringe must occupy an integral | |
1291 | number of columns, we may need to add some pixels to each fringe. | |
1292 | Typically, we add an equal amount (+/- 1 pixel) to each fringe, | |
1293 | but a negative width value is taken literally (after negating it). | |
1294 | ||
11491cbb | 1295 | We never make the fringes narrower than specified. |
6b61353c KH |
1296 | */ |
1297 | ||
1298 | void | |
971de7fb | 1299 | compute_fringe_widths (struct frame *f, int redraw) |
6b61353c KH |
1300 | { |
1301 | int o_left = FRAME_LEFT_FRINGE_WIDTH (f); | |
1302 | int o_right = FRAME_RIGHT_FRINGE_WIDTH (f); | |
1303 | int o_cols = FRAME_FRINGE_COLS (f); | |
1304 | ||
1305 | Lisp_Object left_fringe = Fassq (Qleft_fringe, f->param_alist); | |
1306 | Lisp_Object right_fringe = Fassq (Qright_fringe, f->param_alist); | |
1307 | int left_fringe_width, right_fringe_width; | |
1308 | ||
1309 | if (!NILP (left_fringe)) | |
1310 | left_fringe = Fcdr (left_fringe); | |
1311 | if (!NILP (right_fringe)) | |
1312 | right_fringe = Fcdr (right_fringe); | |
1313 | ||
1314 | left_fringe_width = ((NILP (left_fringe) || !INTEGERP (left_fringe)) ? 8 : | |
1315 | XINT (left_fringe)); | |
1316 | right_fringe_width = ((NILP (right_fringe) || !INTEGERP (right_fringe)) ? 8 : | |
1317 | XINT (right_fringe)); | |
1318 | ||
1319 | if (left_fringe_width || right_fringe_width) | |
1320 | { | |
1321 | int left_wid = left_fringe_width >= 0 ? left_fringe_width : -left_fringe_width; | |
1322 | int right_wid = right_fringe_width >= 0 ? right_fringe_width : -right_fringe_width; | |
1323 | int conf_wid = left_wid + right_wid; | |
1324 | int font_wid = FRAME_COLUMN_WIDTH (f); | |
1325 | int cols = (left_wid + right_wid + font_wid-1) / font_wid; | |
1326 | int real_wid = cols * font_wid; | |
1327 | if (left_wid && right_wid) | |
1328 | { | |
1329 | if (left_fringe_width < 0) | |
1330 | { | |
1331 | /* Left fringe width is fixed, adjust right fringe if necessary */ | |
1332 | FRAME_LEFT_FRINGE_WIDTH (f) = left_wid; | |
1333 | FRAME_RIGHT_FRINGE_WIDTH (f) = real_wid - left_wid; | |
1334 | } | |
1335 | else if (right_fringe_width < 0) | |
1336 | { | |
1337 | /* Right fringe width is fixed, adjust left fringe if necessary */ | |
1338 | FRAME_LEFT_FRINGE_WIDTH (f) = real_wid - right_wid; | |
1339 | FRAME_RIGHT_FRINGE_WIDTH (f) = right_wid; | |
1340 | } | |
1341 | else | |
1342 | { | |
1343 | /* Adjust both fringes with an equal amount. | |
1344 | Note that we are doing integer arithmetic here, so don't | |
1345 | lose a pixel if the total width is an odd number. */ | |
1346 | int fill = real_wid - conf_wid; | |
1347 | FRAME_LEFT_FRINGE_WIDTH (f) = left_wid + fill/2; | |
1348 | FRAME_RIGHT_FRINGE_WIDTH (f) = right_wid + fill - fill/2; | |
1349 | } | |
1350 | } | |
1351 | else if (left_fringe_width) | |
1352 | { | |
1353 | FRAME_LEFT_FRINGE_WIDTH (f) = real_wid; | |
1354 | FRAME_RIGHT_FRINGE_WIDTH (f) = 0; | |
1355 | } | |
1356 | else | |
1357 | { | |
1358 | FRAME_LEFT_FRINGE_WIDTH (f) = 0; | |
1359 | FRAME_RIGHT_FRINGE_WIDTH (f) = real_wid; | |
1360 | } | |
1361 | FRAME_FRINGE_COLS (f) = cols; | |
1362 | } | |
1363 | else | |
1364 | { | |
1365 | FRAME_LEFT_FRINGE_WIDTH (f) = 0; | |
1366 | FRAME_RIGHT_FRINGE_WIDTH (f) = 0; | |
1367 | FRAME_FRINGE_COLS (f) = 0; | |
1368 | } | |
1369 | ||
1370 | if (redraw && FRAME_VISIBLE_P (f)) | |
1371 | if (o_left != FRAME_LEFT_FRINGE_WIDTH (f) || | |
1372 | o_right != FRAME_RIGHT_FRINGE_WIDTH (f) || | |
1373 | o_cols != FRAME_FRINGE_COLS (f)) | |
1374 | redraw_frame (f); | |
1375 | } | |
1376 | ||
7a2a85be | 1377 | |
4cce0ab7 KS |
1378 | /* Free resources used by a user-defined bitmap. */ |
1379 | ||
bf60f616 | 1380 | static void |
971de7fb | 1381 | destroy_fringe_bitmap (int n) |
6b61353c | 1382 | { |
6b61353c KH |
1383 | struct fringe_bitmap **fbp; |
1384 | ||
49ce2dbd | 1385 | fringe_faces[n] = Qnil; |
6b61353c KH |
1386 | |
1387 | fbp = &fringe_bitmaps[n]; | |
1388 | if (*fbp && (*fbp)->dynamic) | |
1389 | { | |
e581a466 | 1390 | /* XXX Is SELECTED_FRAME OK here? */ |
04ccca97 | 1391 | struct redisplay_interface *rif = FRAME_RIF (SELECTED_FRAME ()); |
f2be4fd0 | 1392 | if (rif && rif->destroy_fringe_bitmap) |
6b61353c KH |
1393 | rif->destroy_fringe_bitmap (n); |
1394 | xfree (*fbp); | |
1395 | *fbp = NULL; | |
1396 | } | |
1397 | ||
1398 | while (max_used_fringe_bitmap > MAX_STANDARD_FRINGE_BITMAPS | |
1399 | && fringe_bitmaps[max_used_fringe_bitmap - 1] == NULL) | |
1400 | max_used_fringe_bitmap--; | |
7a2a85be KS |
1401 | } |
1402 | ||
6b61353c | 1403 | |
7a2a85be KS |
1404 | DEFUN ("destroy-fringe-bitmap", Fdestroy_fringe_bitmap, Sdestroy_fringe_bitmap, |
1405 | 1, 1, 0, | |
1406 | doc: /* Destroy fringe bitmap BITMAP. | |
1407 | If BITMAP overrides a standard fringe bitmap, the original bitmap is restored. */) | |
5842a27b | 1408 | (Lisp_Object bitmap) |
7a2a85be KS |
1409 | { |
1410 | int n; | |
7a2a85be | 1411 | |
4cce0ab7 KS |
1412 | CHECK_SYMBOL (bitmap); |
1413 | n = lookup_fringe_bitmap (bitmap); | |
1414 | if (!n) | |
7a2a85be KS |
1415 | return Qnil; |
1416 | ||
1417 | destroy_fringe_bitmap (n); | |
2d05deef | 1418 | |
4cce0ab7 | 1419 | if (n >= MAX_STANDARD_FRINGE_BITMAPS) |
7a2a85be | 1420 | { |
4cce0ab7 | 1421 | Vfringe_bitmaps = Fdelq (bitmap, Vfringe_bitmaps); |
7a2a85be | 1422 | /* It would be better to remove the fringe property. */ |
4cce0ab7 | 1423 | Fput (bitmap, Qfringe, Qnil); |
7a2a85be | 1424 | } |
4cce0ab7 | 1425 | |
6b61353c KH |
1426 | return Qnil; |
1427 | } | |
1428 | ||
1429 | ||
1430 | /* Initialize bitmap bit. | |
1431 | ||
1432 | On X, we bit-swap the built-in bitmaps and reduce bitmap | |
1433 | from short to char array if width is <= 8 bits. | |
1434 | ||
1435 | On MAC with big-endian CPU, we need to byte-swap each short. | |
1436 | ||
1437 | On W32 and MAC (little endian), there's no need to do this. | |
1438 | */ | |
1439 | ||
2e4e5023 | 1440 | #if defined (HAVE_X_WINDOWS) |
91433552 | 1441 | static const unsigned char swap_nibble[16] = { |
2e4e5023 GM |
1442 | 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */ |
1443 | 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */ | |
1444 | 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */ | |
1445 | 0x3, 0xb, 0x7, 0xf}; /* 0011 1011 0111 1111 */ | |
1446 | #endif /* HAVE_X_WINDOWS */ | |
1447 | ||
bf60f616 | 1448 | static void |
971de7fb | 1449 | init_fringe_bitmap (int which, struct fringe_bitmap *fb, int once_p) |
6b61353c KH |
1450 | { |
1451 | if (once_p || fb->dynamic) | |
1452 | { | |
1453 | #if defined (HAVE_X_WINDOWS) | |
6b61353c KH |
1454 | unsigned short *bits = fb->bits; |
1455 | int j; | |
1456 | ||
1457 | if (fb->width <= 8) | |
1458 | { | |
1459 | unsigned char *cbits = (unsigned char *)fb->bits; | |
1460 | for (j = 0; j < fb->height; j++) | |
1461 | { | |
1462 | unsigned short b = *bits++; | |
1463 | unsigned char c; | |
1464 | c = (unsigned char)((swap_nibble[b & 0xf] << 4) | |
1465 | | (swap_nibble[(b>>4) & 0xf])); | |
1466 | *cbits++ = (c >> (8 - fb->width)); | |
1467 | } | |
1468 | } | |
1469 | else | |
1470 | { | |
1471 | for (j = 0; j < fb->height; j++) | |
1472 | { | |
1473 | unsigned short b = *bits; | |
1474 | b = (unsigned short)((swap_nibble[b & 0xf] << 12) | |
1475 | | (swap_nibble[(b>>4) & 0xf] << 8) | |
1476 | | (swap_nibble[(b>>8) & 0xf] << 4) | |
1477 | | (swap_nibble[(b>>12) & 0xf])); | |
4e8231f3 | 1478 | b >>= (16 - fb->width); |
671d409f | 1479 | #ifdef WORDS_BIGENDIAN |
4e8231f3 YM |
1480 | b = ((b >> 8) | (b << 8)); |
1481 | #endif | |
1482 | *bits++ = b; | |
6b61353c KH |
1483 | } |
1484 | } | |
1485 | #endif /* HAVE_X_WINDOWS */ | |
1486 | ||
6b61353c KH |
1487 | } |
1488 | ||
1489 | if (!once_p) | |
1490 | { | |
e581a466 | 1491 | /* XXX Is SELECTED_FRAME OK here? */ |
04ccca97 | 1492 | struct redisplay_interface *rif = FRAME_RIF (SELECTED_FRAME ()); |
a284b538 | 1493 | |
7a2a85be | 1494 | destroy_fringe_bitmap (which); |
6b61353c | 1495 | |
f2be4fd0 | 1496 | if (rif && rif->define_fringe_bitmap) |
6b61353c KH |
1497 | rif->define_fringe_bitmap (which, fb->bits, fb->height, fb->width); |
1498 | ||
1499 | fringe_bitmaps[which] = fb; | |
1500 | if (which >= max_used_fringe_bitmap) | |
1501 | max_used_fringe_bitmap = which + 1; | |
1502 | } | |
1503 | } | |
1504 | ||
1505 | ||
1506 | DEFUN ("define-fringe-bitmap", Fdefine_fringe_bitmap, Sdefine_fringe_bitmap, | |
7a2a85be KS |
1507 | 2, 5, 0, |
1508 | doc: /* Define fringe bitmap BITMAP from BITS of size HEIGHT x WIDTH. | |
2faacff7 | 1509 | BITMAP is a symbol identifying the new fringe bitmap. |
6b61353c KH |
1510 | BITS is either a string or a vector of integers. |
1511 | HEIGHT is height of bitmap. If HEIGHT is nil, use length of BITS. | |
1512 | WIDTH must be an integer between 1 and 16, or nil which defaults to 8. | |
7a2a85be | 1513 | Optional fifth arg ALIGN may be one of `top', `center', or `bottom', |
6b61353c | 1514 | indicating the positioning of the bitmap relative to the rows where it |
6b72791f | 1515 | is used; the default is to center the bitmap. Fifth arg may also be a |
6b61353c KH |
1516 | list (ALIGN PERIODIC) where PERIODIC non-nil specifies that the bitmap |
1517 | should be repeated. | |
7a2a85be | 1518 | If BITMAP already exists, the existing definition is replaced. */) |
5842a27b | 1519 | (Lisp_Object bitmap, Lisp_Object bits, Lisp_Object height, Lisp_Object width, Lisp_Object align) |
6b61353c | 1520 | { |
6b61353c KH |
1521 | int n, h, i, j; |
1522 | unsigned short *b; | |
1523 | struct fringe_bitmap fb, *xfb; | |
1524 | int fill1 = 0, fill2 = 0; | |
7a2a85be | 1525 | |
4cce0ab7 | 1526 | CHECK_SYMBOL (bitmap); |
6b61353c | 1527 | |
11e04b2d KS |
1528 | if (STRINGP (bits)) |
1529 | h = SCHARS (bits); | |
1530 | else if (VECTORP (bits)) | |
1531 | h = XVECTOR (bits)->size; | |
1532 | else | |
7fee0b51 | 1533 | wrong_type_argument (Qsequencep, bits); |
6b61353c KH |
1534 | |
1535 | if (NILP (height)) | |
11e04b2d | 1536 | fb.height = h; |
6b61353c KH |
1537 | else |
1538 | { | |
1539 | CHECK_NUMBER (height); | |
1540 | fb.height = min (XINT (height), 255); | |
11e04b2d | 1541 | if (fb.height > h) |
6b61353c | 1542 | { |
6b61353c KH |
1543 | fill1 = (fb.height - h) / 2; |
1544 | fill2 = fb.height - h - fill1; | |
1545 | } | |
1546 | } | |
1547 | ||
1548 | if (NILP (width)) | |
1549 | fb.width = 8; | |
1550 | else | |
1551 | { | |
1552 | CHECK_NUMBER (width); | |
1553 | fb.width = min (XINT (width), 255); | |
1554 | } | |
1555 | ||
1556 | fb.period = 0; | |
1557 | fb.align = ALIGN_BITMAP_CENTER; | |
1558 | ||
1559 | if (CONSP (align)) | |
1560 | { | |
1561 | Lisp_Object period = XCDR (align); | |
1562 | if (CONSP (period)) | |
1563 | { | |
1564 | period = XCAR (period); | |
1565 | if (!NILP (period)) | |
1566 | { | |
1567 | fb.period = fb.height; | |
1568 | fb.height = 255; | |
1569 | } | |
1570 | } | |
1571 | align = XCAR (align); | |
1572 | } | |
1573 | if (EQ (align, Qtop)) | |
1574 | fb.align = ALIGN_BITMAP_TOP; | |
1575 | else if (EQ (align, Qbottom)) | |
1576 | fb.align = ALIGN_BITMAP_BOTTOM; | |
1577 | else if (!NILP (align) && !EQ (align, Qcenter)) | |
1578 | error ("Bad align argument"); | |
1579 | ||
ad67849e | 1580 | n = lookup_fringe_bitmap (bitmap); |
4cce0ab7 | 1581 | if (!n) |
6b61353c | 1582 | { |
ad67849e | 1583 | if (max_used_fringe_bitmap < max_fringe_bitmaps) |
6b61353c KH |
1584 | n = max_used_fringe_bitmap++; |
1585 | else | |
1586 | { | |
1587 | for (n = MAX_STANDARD_FRINGE_BITMAPS; | |
ad67849e | 1588 | n < max_fringe_bitmaps; |
6b61353c KH |
1589 | n++) |
1590 | if (fringe_bitmaps[n] == NULL) | |
1591 | break; | |
ad67849e KS |
1592 | |
1593 | if (n == max_fringe_bitmaps) | |
1594 | { | |
1595 | if ((max_fringe_bitmaps + 20) > MAX_FRINGE_BITMAPS) | |
1596 | error ("No free fringe bitmap slots"); | |
1597 | ||
1598 | i = max_fringe_bitmaps; | |
1599 | max_fringe_bitmaps += 20; | |
1600 | fringe_bitmaps | |
1601 | = ((struct fringe_bitmap **) | |
1602 | xrealloc (fringe_bitmaps, max_fringe_bitmaps * sizeof (struct fringe_bitmap *))); | |
1603 | fringe_faces | |
50af5100 | 1604 | = (Lisp_Object *) xrealloc (fringe_faces, max_fringe_bitmaps * sizeof (Lisp_Object)); |
ad67849e KS |
1605 | |
1606 | for (; i < max_fringe_bitmaps; i++) | |
1607 | { | |
1608 | fringe_bitmaps[i] = NULL; | |
49ce2dbd | 1609 | fringe_faces[i] = Qnil; |
ad67849e KS |
1610 | } |
1611 | } | |
6b61353c | 1612 | } |
7a2a85be | 1613 | |
4cce0ab7 KS |
1614 | Vfringe_bitmaps = Fcons (bitmap, Vfringe_bitmaps); |
1615 | Fput (bitmap, Qfringe, make_number (n)); | |
6b61353c KH |
1616 | } |
1617 | ||
1618 | fb.dynamic = 1; | |
1619 | ||
1620 | xfb = (struct fringe_bitmap *) xmalloc (sizeof fb | |
1621 | + fb.height * BYTES_PER_BITMAP_ROW); | |
1622 | fb.bits = b = (unsigned short *) (xfb + 1); | |
72af86bd | 1623 | memset (b, 0, fb.height); |
6b61353c KH |
1624 | |
1625 | j = 0; | |
1626 | while (j < fb.height) | |
1627 | { | |
1628 | for (i = 0; i < fill1 && j < fb.height; i++) | |
1629 | b[j++] = 0; | |
1630 | for (i = 0; i < h && j < fb.height; i++) | |
1631 | { | |
1632 | Lisp_Object elt = Faref (bits, make_number (i)); | |
1633 | b[j++] = NUMBERP (elt) ? XINT (elt) : 0; | |
1634 | } | |
1635 | for (i = 0; i < fill2 && j < fb.height; i++) | |
1636 | b[j++] = 0; | |
1637 | } | |
1638 | ||
1639 | *xfb = fb; | |
1640 | ||
1641 | init_fringe_bitmap (n, xfb, 0); | |
1642 | ||
4cce0ab7 | 1643 | return bitmap; |
6b61353c KH |
1644 | } |
1645 | ||
1646 | DEFUN ("set-fringe-bitmap-face", Fset_fringe_bitmap_face, Sset_fringe_bitmap_face, | |
1647 | 1, 2, 0, | |
7a2a85be | 1648 | doc: /* Set face for fringe bitmap BITMAP to FACE. |
6b61353c | 1649 | If FACE is nil, reset face to default fringe face. */) |
5842a27b | 1650 | (Lisp_Object bitmap, Lisp_Object face) |
6b61353c | 1651 | { |
4cce0ab7 | 1652 | int n; |
6b61353c KH |
1653 | int face_id; |
1654 | ||
4cce0ab7 KS |
1655 | CHECK_SYMBOL (bitmap); |
1656 | n = lookup_fringe_bitmap (bitmap); | |
1657 | if (!n) | |
7a2a85be | 1658 | error ("Undefined fringe bitmap"); |
6b61353c KH |
1659 | |
1660 | if (!NILP (face)) | |
1661 | { | |
308785c1 | 1662 | face_id = lookup_derived_face (SELECTED_FRAME (), face, |
5c538596 | 1663 | FRINGE_FACE_ID, 1); |
6b61353c KH |
1664 | if (face_id < 0) |
1665 | error ("No such face"); | |
1666 | } | |
6b61353c | 1667 | |
49ce2dbd | 1668 | fringe_faces[n] = face; |
6b61353c KH |
1669 | |
1670 | return Qnil; | |
1671 | } | |
1672 | ||
1673 | DEFUN ("fringe-bitmaps-at-pos", Ffringe_bitmaps_at_pos, Sfringe_bitmaps_at_pos, | |
1674 | 0, 2, 0, | |
1675 | doc: /* Return fringe bitmaps of row containing position POS in window WINDOW. | |
1676 | If WINDOW is nil, use selected window. If POS is nil, use value of point | |
d3848fe9 KS |
1677 | in that window. Return value is a list (LEFT RIGHT OV), where LEFT |
1678 | is the symbol for the bitmap in the left fringe (or nil if no bitmap), | |
1679 | RIGHT is similar for the right fringe, and OV is non-nil if there is an | |
1680 | overlay arrow in the left fringe. | |
5797a7a0 | 1681 | Return nil if POS is not visible in WINDOW. */) |
5842a27b | 1682 | (Lisp_Object pos, Lisp_Object window) |
6b61353c KH |
1683 | { |
1684 | struct window *w; | |
6b61353c KH |
1685 | struct glyph_row *row; |
1686 | int textpos; | |
1687 | ||
1688 | if (NILP (window)) | |
1689 | window = selected_window; | |
1690 | CHECK_WINDOW (window); | |
1691 | w = XWINDOW (window); | |
1692 | ||
1693 | if (!NILP (pos)) | |
1694 | { | |
1695 | CHECK_NUMBER_COERCE_MARKER (pos); | |
1696 | textpos = XINT (pos); | |
1697 | } | |
1698 | else if (w == XWINDOW (selected_window)) | |
1699 | textpos = PT; | |
1700 | else | |
1701 | textpos = XMARKER (w->pointm)->charpos; | |
1702 | ||
1703 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
1704 | row = row_containing_pos (w, textpos, row, NULL, 0); | |
1705 | if (row) | |
d3848fe9 KS |
1706 | return list3 (get_fringe_bitmap_name (row->left_fringe_bitmap), |
1707 | get_fringe_bitmap_name (row->right_fringe_bitmap), | |
a8b34fae KS |
1708 | (row->overlay_arrow_bitmap == 0 ? Qnil |
1709 | : row->overlay_arrow_bitmap < 0 ? Qt | |
1710 | : get_fringe_bitmap_name (row->overlay_arrow_bitmap))); | |
6b61353c KH |
1711 | else |
1712 | return Qnil; | |
1713 | } | |
1714 | ||
1715 | ||
1716 | /*********************************************************************** | |
1717 | Initialization | |
1718 | ***********************************************************************/ | |
1719 | ||
1720 | void | |
971de7fb | 1721 | syms_of_fringe (void) |
6b61353c | 1722 | { |
d67b4f80 | 1723 | Qtruncation = intern_c_string ("truncation"); |
7840b332 | 1724 | staticpro (&Qtruncation); |
d67b4f80 | 1725 | Qcontinuation = intern_c_string ("continuation"); |
7840b332 | 1726 | staticpro (&Qcontinuation); |
d67b4f80 | 1727 | Qoverlay_arrow = intern_c_string ("overlay-arrow"); |
7840b332 | 1728 | staticpro (&Qoverlay_arrow); |
d67b4f80 | 1729 | Qempty_line = intern_c_string ("empty-line"); |
7840b332 | 1730 | staticpro (&Qempty_line); |
d67b4f80 | 1731 | Qtop_bottom = intern_c_string ("top-bottom"); |
7840b332 | 1732 | staticpro (&Qtop_bottom); |
d67b4f80 | 1733 | Qhollow_small = intern_c_string ("hollow-small"); |
7840b332 KS |
1734 | staticpro (&Qhollow_small); |
1735 | ||
6b61353c KH |
1736 | defsubr (&Sdestroy_fringe_bitmap); |
1737 | defsubr (&Sdefine_fringe_bitmap); | |
1738 | defsubr (&Sfringe_bitmaps_at_pos); | |
1739 | defsubr (&Sset_fringe_bitmap_face); | |
1740 | ||
29208e82 | 1741 | DEFVAR_LISP ("overflow-newline-into-fringe", Voverflow_newline_into_fringe, |
6b61353c KH |
1742 | doc: /* *Non-nil means that newline may flow into the right fringe. |
1743 | This means that display lines which are exactly as wide as the window | |
1744 | (not counting the final newline) will only occupy one screen line, by | |
1745 | showing (or hiding) the final newline in the right fringe; when point | |
1746 | is at the final newline, the cursor is shown in the right fringe. | |
1747 | If nil, also continue lines which are exactly as wide as the window. */); | |
1748 | Voverflow_newline_into_fringe = Qt; | |
1749 | ||
29208e82 | 1750 | DEFVAR_LISP ("fringe-bitmaps", Vfringe_bitmaps, |
a4b7b036 | 1751 | doc: /* List of fringe bitmap symbols. */); |
7a2a85be | 1752 | Vfringe_bitmaps = Qnil; |
6b61353c KH |
1753 | } |
1754 | ||
49ce2dbd KS |
1755 | /* Garbage collection hook */ |
1756 | ||
1757 | void | |
971de7fb | 1758 | mark_fringe_data (void) |
49ce2dbd KS |
1759 | { |
1760 | int i; | |
1761 | ||
1762 | for (i = 0; i < max_fringe_bitmaps; i++) | |
1763 | if (!NILP (fringe_faces[i])) | |
1764 | mark_object (fringe_faces[i]); | |
1765 | } | |
1766 | ||
6b61353c KH |
1767 | /* Initialize this module when Emacs starts. */ |
1768 | ||
1769 | void | |
971de7fb | 1770 | init_fringe_once (void) |
6b61353c | 1771 | { |
7840b332 | 1772 | int bt; |
6b61353c KH |
1773 | |
1774 | for (bt = NO_FRINGE_BITMAP + 1; bt < MAX_STANDARD_FRINGE_BITMAPS; bt++) | |
1775 | init_fringe_bitmap(bt, &standard_bitmaps[bt], 1); | |
1776 | } | |
1777 | ||
1778 | void | |
971de7fb | 1779 | init_fringe (void) |
6b61353c KH |
1780 | { |
1781 | int i; | |
1782 | ||
ad67849e KS |
1783 | max_fringe_bitmaps = MAX_STANDARD_FRINGE_BITMAPS + 20; |
1784 | ||
1785 | fringe_bitmaps | |
1786 | = (struct fringe_bitmap **) xmalloc (max_fringe_bitmaps * sizeof (struct fringe_bitmap *)); | |
1787 | fringe_faces | |
50af5100 | 1788 | = (Lisp_Object *) xmalloc (max_fringe_bitmaps * sizeof (Lisp_Object)); |
ad67849e KS |
1789 | |
1790 | for (i = 0; i < max_fringe_bitmaps; i++) | |
1791 | { | |
1792 | fringe_bitmaps[i] = NULL; | |
49ce2dbd | 1793 | fringe_faces[i] = Qnil; |
ad67849e | 1794 | } |
6b61353c KH |
1795 | } |
1796 | ||
9e2a2647 | 1797 | #ifdef HAVE_NTGUI |
6b61353c KH |
1798 | |
1799 | void | |
9e2a2647 | 1800 | w32_init_fringe (struct redisplay_interface *rif) |
6b61353c | 1801 | { |
7840b332 | 1802 | int bt; |
6b61353c | 1803 | |
f2be4fd0 KS |
1804 | if (!rif) |
1805 | return; | |
1806 | ||
6b61353c KH |
1807 | for (bt = NO_FRINGE_BITMAP + 1; bt < MAX_STANDARD_FRINGE_BITMAPS; bt++) |
1808 | { | |
1809 | struct fringe_bitmap *fb = &standard_bitmaps[bt]; | |
1810 | rif->define_fringe_bitmap (bt, fb->bits, fb->height, fb->width); | |
1811 | } | |
1812 | } | |
1813 | ||
1814 | void | |
7c3320d8 | 1815 | w32_reset_fringes (void) |
6b61353c KH |
1816 | { |
1817 | /* Destroy row bitmaps. */ | |
1818 | int bt; | |
5c217767 | 1819 | struct redisplay_interface *rif = FRAME_RIF (SELECTED_FRAME ()); |
6b61353c | 1820 | |
f2be4fd0 KS |
1821 | if (!rif) |
1822 | return; | |
1823 | ||
6b61353c KH |
1824 | for (bt = NO_FRINGE_BITMAP + 1; bt < max_used_fringe_bitmap; bt++) |
1825 | rif->destroy_fringe_bitmap (bt); | |
1826 | } | |
1827 | ||
1828 | #endif /* HAVE_NTGUI */ | |
1829 | ||
1830 | #endif /* HAVE_WINDOW_SYSTEM */ |