Commit | Line | Data |
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6b61353c | 1 | /* Fringe handling (split from xdisp.c). |
acaf905b | 2 | Copyright (C) 1985-1988, 1993-1995, 1997-2012 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> | |
21 | ||
22 | #include "lisp.h" | |
23 | #include "frame.h" | |
24 | #include "window.h" | |
25 | #include "dispextern.h" | |
e5560ff7 | 26 | #include "character.h" |
6b61353c KH |
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 | ||
e4920bc9 | 38 | Physical bitmaps specify the visual appearance of the bitmap, |
7840b332 KS |
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 | ||
2e2d2a13 | 109 | /* An exclamation mark. */ |
cd276f6e LL |
110 | /* |
111 | ...XX... | |
112 | ...XX... | |
113 | ...XX... | |
114 | ...XX... | |
115 | ...XX... | |
116 | ...XX... | |
117 | ...XX... | |
118 | ........ | |
119 | ...XX... | |
120 | ...XX... | |
121 | */ | |
122 | static unsigned short exclamation_mark_bits[] = { | |
123 | 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x00, 0x18}; | |
124 | ||
6b61353c KH |
125 | /* An arrow like this: `<-'. */ |
126 | /* | |
127 | ...xx... | |
128 | ..xx.... | |
129 | .xx..... | |
130 | xxxxxx.. | |
131 | xxxxxx.. | |
132 | .xx..... | |
133 | ..xx.... | |
134 | ...xx... | |
135 | */ | |
136 | static unsigned short left_arrow_bits[] = { | |
137 | 0x18, 0x30, 0x60, 0xfc, 0xfc, 0x60, 0x30, 0x18}; | |
138 | ||
139 | ||
140 | /* Right truncation arrow bitmap `->'. */ | |
141 | /* | |
142 | ...xx... | |
143 | ....xx.. | |
144 | .....xx. | |
145 | ..xxxxxx | |
146 | ..xxxxxx | |
147 | .....xx. | |
148 | ....xx.. | |
149 | ...xx... | |
150 | */ | |
151 | static unsigned short right_arrow_bits[] = { | |
152 | 0x18, 0x0c, 0x06, 0x3f, 0x3f, 0x06, 0x0c, 0x18}; | |
153 | ||
154 | ||
155 | /* Up arrow bitmap. */ | |
156 | /* | |
157 | ...xx... | |
158 | ..xxxx.. | |
159 | .xxxxxx. | |
160 | xxxxxxxx | |
161 | ...xx... | |
162 | ...xx... | |
163 | ...xx... | |
164 | ...xx... | |
165 | */ | |
166 | static unsigned short up_arrow_bits[] = { | |
167 | 0x18, 0x3c, 0x7e, 0xff, 0x18, 0x18, 0x18, 0x18}; | |
168 | ||
169 | ||
170 | /* Down arrow bitmap. */ | |
171 | /* | |
172 | ...xx... | |
173 | ...xx... | |
174 | ...xx... | |
175 | ...xx... | |
176 | xxxxxxxx | |
177 | .xxxxxx. | |
178 | ..xxxx.. | |
179 | ...xx... | |
180 | */ | |
181 | static unsigned short down_arrow_bits[] = { | |
182 | 0x18, 0x18, 0x18, 0x18, 0xff, 0x7e, 0x3c, 0x18}; | |
183 | ||
6b61353c KH |
184 | /* Marker for continuation lines. */ |
185 | /* | |
186 | ..xxxx.. | |
187 | .xxxxx.. | |
188 | xx...... | |
189 | xxx..x.. | |
190 | xxxxxx.. | |
191 | .xxxxx.. | |
192 | ..xxxx.. | |
193 | .xxxxx.. | |
194 | */ | |
7840b332 | 195 | static unsigned short left_curly_arrow_bits[] = { |
6b61353c KH |
196 | 0x3c, 0x7c, 0xc0, 0xe4, 0xfc, 0x7c, 0x3c, 0x7c}; |
197 | ||
7840b332 | 198 | /* Marker for continued lines. */ |
6b61353c | 199 | /* |
7840b332 KS |
200 | ..xxxx.. |
201 | ..xxxxx. | |
202 | ......xx | |
203 | ..x..xxx | |
204 | ..xxxxxx | |
205 | ..xxxxx. | |
206 | ..xxxx.. | |
207 | ..xxxxx. | |
6b61353c | 208 | */ |
7840b332 KS |
209 | static unsigned short right_curly_arrow_bits[] = { |
210 | 0x3c, 0x3e, 0x03, 0x27, 0x3f, 0x3e, 0x3c, 0x3e}; | |
6b61353c | 211 | |
6b61353c KH |
212 | /* Reverse Overlay arrow bitmap. A triangular arrow. */ |
213 | /* | |
214 | ......xx | |
215 | ....xxxx | |
216 | ...xxxxx | |
217 | ..xxxxxx | |
218 | ..xxxxxx | |
219 | ...xxxxx | |
220 | ....xxxx | |
221 | ......xx | |
222 | */ | |
7840b332 | 223 | static unsigned short left_triangle_bits[] = { |
6b61353c | 224 | 0x03, 0x0f, 0x1f, 0x3f, 0x3f, 0x1f, 0x0f, 0x03}; |
7840b332 KS |
225 | |
226 | /* Overlay arrow bitmap. A triangular arrow. */ | |
227 | /* | |
228 | xx...... | |
229 | xxxx.... | |
230 | xxxxx... | |
231 | xxxxxx.. | |
232 | xxxxxx.. | |
233 | xxxxx... | |
234 | xxxx.... | |
235 | xx...... | |
236 | */ | |
237 | static unsigned short right_triangle_bits[] = { | |
238 | 0xc0, 0xf0, 0xf8, 0xfc, 0xfc, 0xf8, 0xf0, 0xc0}; | |
6b61353c KH |
239 | |
240 | /* First line bitmap. An top-left angle. */ | |
241 | /* | |
242 | xxxxxx.. | |
243 | xxxxxx.. | |
244 | xx...... | |
245 | xx...... | |
246 | xx...... | |
247 | xx...... | |
248 | xx...... | |
249 | ........ | |
250 | */ | |
251 | static unsigned short top_left_angle_bits[] = { | |
252 | 0xfc, 0xfc, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0x00}; | |
253 | ||
254 | /* First line bitmap. An right-up angle. */ | |
255 | /* | |
256 | ..xxxxxx | |
257 | ..xxxxxx | |
258 | ......xx | |
259 | ......xx | |
260 | ......xx | |
261 | ......xx | |
262 | ......xx | |
263 | ........ | |
264 | */ | |
265 | static unsigned short top_right_angle_bits[] = { | |
266 | 0x3f, 0x3f, 0x03, 0x03, 0x03, 0x03, 0x03, 0x00}; | |
267 | ||
268 | /* Last line bitmap. An left-down angle. */ | |
269 | /* | |
270 | ........ | |
271 | xx...... | |
272 | xx...... | |
273 | xx...... | |
274 | xx...... | |
275 | xx...... | |
276 | xxxxxx.. | |
277 | xxxxxx.. | |
278 | */ | |
279 | static unsigned short bottom_left_angle_bits[] = { | |
280 | 0x00, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xfc, 0xfc}; | |
281 | ||
282 | /* Last line bitmap. An right-down angle. */ | |
283 | /* | |
284 | ........ | |
285 | ......xx | |
286 | ......xx | |
287 | ......xx | |
288 | ......xx | |
289 | ......xx | |
290 | ..xxxxxx | |
291 | ..xxxxxx | |
292 | */ | |
293 | static unsigned short bottom_right_angle_bits[] = { | |
294 | 0x00, 0x03, 0x03, 0x03, 0x03, 0x03, 0x3f, 0x3f}; | |
295 | ||
296 | /* First/last line bitmap. An left 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 left_bracket_bits[] = { | |
310 | 0xfc, 0xfc, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xfc, 0xfc}; | |
311 | ||
312 | /* First/last line bitmap. An right bracket. */ | |
313 | /* | |
314 | ..xxxxxx | |
315 | ..xxxxxx | |
316 | ......xx | |
317 | ......xx | |
318 | ......xx | |
319 | ......xx | |
320 | ......xx | |
321 | ......xx | |
322 | ..xxxxxx | |
323 | ..xxxxxx | |
324 | */ | |
325 | static unsigned short right_bracket_bits[] = { | |
326 | 0x3f, 0x3f, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x3f, 0x3f}; | |
327 | ||
328 | /* Filled box cursor bitmap. A filled box; max 13 pixels high. */ | |
329 | /* | |
330 | xxxxxxx. | |
331 | xxxxxxx. | |
332 | xxxxxxx. | |
333 | xxxxxxx. | |
334 | xxxxxxx. | |
335 | xxxxxxx. | |
336 | xxxxxxx. | |
337 | xxxxxxx. | |
338 | xxxxxxx. | |
339 | xxxxxxx. | |
340 | xxxxxxx. | |
341 | xxxxxxx. | |
342 | xxxxxxx. | |
343 | */ | |
7840b332 | 344 | static unsigned short filled_rectangle_bits[] = { |
6b61353c KH |
345 | 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe}; |
346 | ||
347 | /* Hollow box cursor bitmap. A hollow box; max 13 pixels high. */ | |
348 | /* | |
349 | xxxxxxx. | |
350 | x.....x. | |
351 | x.....x. | |
352 | x.....x. | |
353 | x.....x. | |
354 | x.....x. | |
355 | x.....x. | |
356 | x.....x. | |
357 | x.....x. | |
358 | x.....x. | |
359 | x.....x. | |
360 | x.....x. | |
361 | xxxxxxx. | |
362 | */ | |
7840b332 | 363 | static unsigned short hollow_rectangle_bits[] = { |
6b61353c KH |
364 | 0xfe, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0xfe}; |
365 | ||
7840b332 KS |
366 | /* Hollow square bitmap. */ |
367 | /* | |
368 | .xxxxxx. | |
369 | .x....x. | |
370 | .x....x. | |
371 | .x....x. | |
372 | .x....x. | |
373 | .xxxxxx. | |
374 | */ | |
375 | static unsigned short hollow_square_bits[] = { | |
376 | 0x7e, 0x42, 0x42, 0x42, 0x42, 0x7e}; | |
377 | ||
378 | /* Filled square bitmap. */ | |
379 | /* | |
380 | .xxxxxx. | |
381 | .xxxxxx. | |
382 | .xxxxxx. | |
383 | .xxxxxx. | |
384 | .xxxxxx. | |
385 | .xxxxxx. | |
386 | */ | |
387 | static unsigned short filled_square_bits[] = { | |
388 | 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e}; | |
389 | ||
6b61353c KH |
390 | /* Bar cursor bitmap. A vertical bar; max 13 pixels high. */ |
391 | /* | |
392 | xx...... | |
393 | xx...... | |
394 | xx...... | |
395 | xx...... | |
396 | xx...... | |
397 | xx...... | |
398 | xx...... | |
399 | xx...... | |
400 | xx...... | |
401 | xx...... | |
402 | xx...... | |
403 | xx...... | |
404 | xx...... | |
405 | */ | |
7840b332 | 406 | static unsigned short vertical_bar_bits[] = { |
6b61353c KH |
407 | 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0}; |
408 | ||
68a33afa | 409 | /* HBar cursor bitmap. A horizontal bar; 2 pixels high. */ |
6b61353c KH |
410 | /* |
411 | xxxxxxx. | |
412 | xxxxxxx. | |
413 | */ | |
68a33afa | 414 | static unsigned short horizontal_bar_bits[] = { |
6b61353c KH |
415 | 0xfe, 0xfe}; |
416 | ||
417 | ||
418 | /* Bitmap drawn to indicate lines not displaying text if | |
419 | `indicate-empty-lines' is non-nil. */ | |
420 | /* | |
421 | ........ | |
422 | ..xxxx.. | |
423 | ........ | |
424 | ........ | |
425 | ..xxxx.. | |
426 | ........ | |
427 | */ | |
7840b332 | 428 | static unsigned short empty_line_bits[] = { |
6b61353c KH |
429 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, |
430 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
431 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
432 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
433 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
434 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
435 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
436 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00}; | |
437 | ||
6b61353c KH |
438 | |
439 | #define BYTES_PER_BITMAP_ROW (sizeof (unsigned short)) | |
440 | #define STANDARD_BITMAP_HEIGHT(bits) (sizeof (bits)/BYTES_PER_BITMAP_ROW) | |
441 | #define FRBITS(bits) bits, STANDARD_BITMAP_HEIGHT (bits) | |
442 | ||
7840b332 KS |
443 | /* NOTE: The order of these bitmaps must match the sequence |
444 | used in fringe.el to define the corresponding symbols. */ | |
445 | ||
ad9a7a06 | 446 | static struct fringe_bitmap standard_bitmaps[] = |
6b61353c KH |
447 | { |
448 | { NULL, 0, 0, 0, 0, 0 }, /* NO_FRINGE_BITMAP */ | |
7840b332 | 449 | { FRBITS (question_mark_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
cd276f6e | 450 | { FRBITS (exclamation_mark_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
6b61353c KH |
451 | { FRBITS (left_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
452 | { FRBITS (right_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
453 | { FRBITS (up_arrow_bits), 8, 0, ALIGN_BITMAP_TOP, 0 }, | |
454 | { FRBITS (down_arrow_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, | |
7840b332 KS |
455 | { FRBITS (left_curly_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
456 | { FRBITS (right_curly_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
457 | { FRBITS (left_triangle_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
458 | { FRBITS (right_triangle_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
6b61353c KH |
459 | { FRBITS (top_left_angle_bits), 8, 0, ALIGN_BITMAP_TOP, 0 }, |
460 | { FRBITS (top_right_angle_bits), 8, 0, ALIGN_BITMAP_TOP, 0 }, | |
461 | { FRBITS (bottom_left_angle_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, | |
462 | { FRBITS (bottom_right_angle_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, | |
463 | { FRBITS (left_bracket_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
464 | { FRBITS (right_bracket_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
7840b332 KS |
465 | { FRBITS (filled_rectangle_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
466 | { FRBITS (hollow_rectangle_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
467 | { FRBITS (filled_square_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
6b61353c | 468 | { FRBITS (hollow_square_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
7840b332 | 469 | { FRBITS (vertical_bar_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
68a33afa | 470 | { FRBITS (horizontal_bar_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, |
7840b332 | 471 | { FRBITS (empty_line_bits), 8, 3, ALIGN_BITMAP_TOP, 0 }, |
6b61353c KH |
472 | }; |
473 | ||
7840b332 KS |
474 | #define NO_FRINGE_BITMAP 0 |
475 | #define UNDEF_FRINGE_BITMAP 1 | |
5e617bc2 | 476 | #define MAX_STANDARD_FRINGE_BITMAPS (sizeof (standard_bitmaps)/sizeof (standard_bitmaps[0])) |
7840b332 | 477 | |
ad67849e | 478 | static struct fringe_bitmap **fringe_bitmaps; |
49ce2dbd | 479 | static Lisp_Object *fringe_faces; |
ad67849e | 480 | static int max_fringe_bitmaps; |
6b61353c | 481 | |
ad9a7a06 PE |
482 | #ifndef HAVE_NS |
483 | static | |
484 | #endif | |
edfda783 | 485 | int max_used_fringe_bitmap = MAX_STANDARD_FRINGE_BITMAPS; |
6b61353c | 486 | |
4cce0ab7 KS |
487 | |
488 | /* Lookup bitmap number for symbol BITMAP. | |
489 | Return 0 if not a bitmap. */ | |
6b61353c KH |
490 | |
491 | int | |
971de7fb | 492 | lookup_fringe_bitmap (Lisp_Object bitmap) |
7a2a85be | 493 | { |
d311d28c | 494 | EMACS_INT bn; |
7a2a85be | 495 | |
4cce0ab7 | 496 | bitmap = Fget (bitmap, Qfringe); |
7a2a85be KS |
497 | if (!INTEGERP (bitmap)) |
498 | return 0; | |
499 | ||
500 | bn = XINT (bitmap); | |
4cce0ab7 KS |
501 | if (bn > NO_FRINGE_BITMAP |
502 | && bn < max_used_fringe_bitmap | |
503 | && (bn < MAX_STANDARD_FRINGE_BITMAPS | |
504 | || fringe_bitmaps[bn] != NULL)) | |
505 | return bn; | |
506 | ||
507 | return 0; | |
7a2a85be KS |
508 | } |
509 | ||
510 | /* Get fringe bitmap name for bitmap number BN. | |
511 | ||
512 | Found by traversing Vfringe_bitmaps comparing BN to the | |
513 | fringe property for each symbol. | |
514 | ||
515 | Return BN if not found in Vfringe_bitmaps. */ | |
516 | ||
517 | static Lisp_Object | |
971de7fb | 518 | get_fringe_bitmap_name (int bn) |
7a2a85be KS |
519 | { |
520 | Lisp_Object bitmaps; | |
521 | Lisp_Object num; | |
522 | ||
523 | /* Zero means no bitmap -- return nil. */ | |
524 | if (bn <= 0) | |
525 | return Qnil; | |
526 | ||
527 | bitmaps = Vfringe_bitmaps; | |
528 | num = make_number (bn); | |
529 | ||
530 | while (CONSP (bitmaps)) | |
531 | { | |
532 | Lisp_Object bitmap = XCAR (bitmaps); | |
533 | if (EQ (num, Fget (bitmap, Qfringe))) | |
534 | return bitmap; | |
535 | bitmaps = XCDR (bitmaps); | |
536 | } | |
537 | ||
538 | return num; | |
539 | } | |
540 | ||
e61124cd YM |
541 | /* Get fringe bitmap data for bitmap number BN. */ |
542 | ||
543 | static struct fringe_bitmap * | |
544 | get_fringe_bitmap_data (int bn) | |
545 | { | |
546 | struct fringe_bitmap *fb; | |
547 | ||
548 | fb = fringe_bitmaps[bn]; | |
549 | if (fb == NULL) | |
550 | fb = &standard_bitmaps[bn < MAX_STANDARD_FRINGE_BITMAPS | |
551 | ? bn : UNDEF_FRINGE_BITMAP]; | |
552 | ||
553 | return fb; | |
554 | } | |
7a2a85be | 555 | |
6b61353c KH |
556 | /* Draw the bitmap WHICH in one of the left or right fringes of |
557 | window W. ROW is the glyph row for which to display the bitmap; it | |
558 | determines the vertical position at which the bitmap has to be | |
559 | drawn. | |
560 | LEFT_P is 1 for left fringe, 0 for right fringe. | |
561 | */ | |
562 | ||
7840b332 | 563 | static void |
971de7fb | 564 | draw_fringe_bitmap_1 (struct window *w, struct glyph_row *row, int left_p, int overlay, int which) |
6b61353c KH |
565 | { |
566 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
567 | struct draw_fringe_bitmap_params p; | |
568 | struct fringe_bitmap *fb; | |
569 | int period; | |
570 | int face_id = DEFAULT_FACE_ID; | |
5a874e95 | 571 | int offset, header_line_height; |
6b61353c | 572 | |
6b61353c KH |
573 | p.overlay_p = (overlay & 1) == 1; |
574 | p.cursor_p = (overlay & 2) == 2; | |
575 | ||
576 | if (which != NO_FRINGE_BITMAP) | |
577 | { | |
5a874e95 | 578 | offset = 0; |
6b61353c KH |
579 | } |
580 | else if (left_p) | |
581 | { | |
582 | which = row->left_fringe_bitmap; | |
583 | face_id = row->left_fringe_face_id; | |
5a874e95 | 584 | offset = row->left_fringe_offset; |
6b61353c KH |
585 | } |
586 | else | |
587 | { | |
588 | which = row->right_fringe_bitmap; | |
589 | face_id = row->right_fringe_face_id; | |
5a874e95 | 590 | offset = row->right_fringe_offset; |
6b61353c KH |
591 | } |
592 | ||
593 | if (face_id == DEFAULT_FACE_ID) | |
49ce2dbd | 594 | { |
67aecef9 CY |
595 | Lisp_Object face = fringe_faces[which]; |
596 | face_id = NILP (face) ? lookup_named_face (f, Qfringe, 0) | |
597 | : lookup_derived_face (f, face, FRINGE_FACE_ID, 0); | |
598 | if (face_id < 0) | |
49ce2dbd KS |
599 | face_id = FRINGE_FACE_ID; |
600 | } | |
6b61353c | 601 | |
e61124cd | 602 | fb = get_fringe_bitmap_data (which); |
6b61353c KH |
603 | |
604 | period = fb->period; | |
605 | ||
606 | /* Convert row to frame coordinates. */ | |
5a874e95 | 607 | p.y = WINDOW_TO_FRAME_PIXEL_Y (w, row->y) + offset; |
6b61353c KH |
608 | |
609 | p.which = which; | |
610 | p.bits = fb->bits; | |
611 | p.wd = fb->width; | |
612 | ||
613 | p.h = fb->height; | |
614 | p.dh = (period > 0 ? (p.y % period) : 0); | |
615 | p.h -= p.dh; | |
5a874e95 YM |
616 | |
617 | /* Adjust y to the offset in the row to start drawing the bitmap. */ | |
618 | switch (fb->align) | |
619 | { | |
620 | case ALIGN_BITMAP_CENTER: | |
621 | p.y += (row->height - p.h) / 2; | |
622 | break; | |
623 | case ALIGN_BITMAP_BOTTOM: | |
624 | p.y += (row->visible_height - p.h); | |
625 | break; | |
626 | case ALIGN_BITMAP_TOP: | |
627 | break; | |
628 | } | |
6b61353c KH |
629 | |
630 | p.face = FACE_FROM_ID (f, face_id); | |
631 | ||
632 | if (p.face == NULL) | |
633 | { | |
49ce2dbd KS |
634 | /* This could happen after clearing face cache. |
635 | But it shouldn't happen anymore. ++kfs */ | |
6b61353c KH |
636 | return; |
637 | } | |
638 | ||
639 | PREPARE_FACE_FOR_DISPLAY (f, p.face); | |
640 | ||
641 | /* Clear left fringe if no bitmap to draw or if bitmap doesn't fill | |
642 | the fringe. */ | |
643 | p.bx = -1; | |
5a874e95 YM |
644 | header_line_height = WINDOW_HEADER_LINE_HEIGHT (w); |
645 | p.by = WINDOW_TO_FRAME_PIXEL_Y (w, max (header_line_height, row->y)); | |
646 | p.ny = row->visible_height; | |
6b61353c KH |
647 | if (left_p) |
648 | { | |
649 | int wd = WINDOW_LEFT_FRINGE_WIDTH (w); | |
650 | int x = window_box_left (w, (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
651 | ? LEFT_MARGIN_AREA | |
652 | : TEXT_AREA)); | |
653 | if (p.wd > wd) | |
654 | p.wd = wd; | |
655 | p.x = x - p.wd - (wd - p.wd) / 2; | |
656 | ||
5a874e95 | 657 | if (p.wd < wd || p.y > p.by || p.y + p.h < p.by + p.ny) |
6b61353c KH |
658 | { |
659 | /* If W has a vertical border to its left, don't draw over it. */ | |
660 | wd -= ((!WINDOW_LEFTMOST_P (w) | |
aba05ce9 EZ |
661 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
662 | /* But don't reduce the fringe width if the window | |
663 | has a left margin, because that means we are not | |
664 | in danger of drawing over the vertical border, | |
665 | and OTOH leaving out that one pixel leaves behind | |
666 | traces of the cursor, if it was in column zero | |
667 | before drawing non-empty margin area. */ | |
668 | && NILP (w->left_margin_cols)) | |
6b61353c KH |
669 | ? 1 : 0); |
670 | p.bx = x - wd; | |
671 | p.nx = wd; | |
672 | } | |
673 | } | |
674 | else | |
675 | { | |
676 | int x = window_box_right (w, | |
677 | (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
678 | ? RIGHT_MARGIN_AREA | |
679 | : TEXT_AREA)); | |
680 | int wd = WINDOW_RIGHT_FRINGE_WIDTH (w); | |
681 | if (p.wd > wd) | |
682 | p.wd = wd; | |
683 | p.x = x + (wd - p.wd) / 2; | |
684 | /* Clear right fringe if no bitmap to draw of if bitmap doesn't fill | |
685 | the fringe. */ | |
5a874e95 | 686 | if (p.wd < wd || p.y > p.by || p.y + p.h < p.by + p.ny) |
6b61353c KH |
687 | { |
688 | p.bx = x; | |
689 | p.nx = wd; | |
690 | } | |
691 | } | |
692 | ||
e581a466 | 693 | FRAME_RIF (f)->draw_fringe_bitmap (w, row, &p); |
6b61353c KH |
694 | } |
695 | ||
7840b332 | 696 | static int |
971de7fb | 697 | get_logical_cursor_bitmap (struct window *w, Lisp_Object cursor) |
7840b332 KS |
698 | { |
699 | Lisp_Object cmap, bm = Qnil; | |
700 | ||
d3d50620 | 701 | if ((cmap = BVAR (XBUFFER (w->buffer), fringe_cursor_alist)), !NILP (cmap)) |
7840b332 KS |
702 | { |
703 | bm = Fassq (cursor, cmap); | |
704 | if (CONSP (bm)) | |
705 | { | |
706 | if ((bm = XCDR (bm)), NILP (bm)) | |
707 | return NO_FRINGE_BITMAP; | |
708 | return lookup_fringe_bitmap (bm); | |
709 | } | |
710 | } | |
4b4deea2 | 711 | if (EQ (cmap, BVAR (&buffer_defaults, fringe_cursor_alist))) |
7840b332 | 712 | return NO_FRINGE_BITMAP; |
4b4deea2 | 713 | bm = Fassq (cursor, BVAR (&buffer_defaults, fringe_cursor_alist)); |
7840b332 KS |
714 | if (!CONSP (bm) || ((bm = XCDR (bm)), NILP (bm))) |
715 | return NO_FRINGE_BITMAP; | |
716 | return lookup_fringe_bitmap (bm); | |
717 | } | |
718 | ||
719 | static int | |
971de7fb | 720 | get_logical_fringe_bitmap (struct window *w, Lisp_Object bitmap, int right_p, int partial_p) |
7840b332 KS |
721 | { |
722 | Lisp_Object cmap, bm1 = Qnil, bm2 = Qnil, bm; | |
d311d28c | 723 | EMACS_INT ln1 = 0, ln2 = 0; |
7840b332 KS |
724 | int ix1 = right_p; |
725 | int ix2 = ix1 + (partial_p ? 2 : 0); | |
726 | ||
727 | /* Lookup in buffer-local fringe-indicator-alist before global alist. | |
728 | ||
729 | Elements are: | |
730 | BITMAP -- use for all | |
731 | (L R) -- use for left right (whether partial or not) | |
78edd3b7 | 732 | (L R PL PR) -- use for left right partial-left partial-right |
7840b332 KS |
733 | If any value in local binding is not present or t, use global value. |
734 | ||
735 | If partial, lookup partial bitmap in default value if not found here. | |
736 | If not partial, or no partial spec is present, use non-partial bitmap. */ | |
737 | ||
d3d50620 | 738 | if ((cmap = BVAR (XBUFFER (w->buffer), fringe_indicator_alist)), !NILP (cmap)) |
7840b332 KS |
739 | { |
740 | bm1 = Fassq (bitmap, cmap); | |
741 | if (CONSP (bm1)) | |
742 | { | |
743 | if ((bm1 = XCDR (bm1)), NILP (bm1)) | |
744 | return NO_FRINGE_BITMAP; | |
745 | if (CONSP (bm1)) | |
746 | { | |
747 | ln1 = XINT (Flength (bm1)); | |
748 | if (partial_p) | |
749 | { | |
750 | if (ln1 > ix2) | |
751 | { | |
752 | bm = Fnth (make_number (ix2), bm1); | |
753 | if (!EQ (bm, Qt)) | |
754 | goto found; | |
755 | } | |
756 | } | |
757 | else | |
758 | { | |
759 | if (ln1 > ix1) | |
760 | { | |
761 | bm = Fnth (make_number (ix1), bm1); | |
762 | if (!EQ (bm, Qt)) | |
763 | goto found; | |
764 | } | |
765 | } | |
766 | } | |
767 | else if ((bm = bm1, !EQ (bm, Qt))) | |
768 | goto found; | |
769 | } | |
770 | } | |
771 | ||
4b4deea2 TT |
772 | if (!EQ (cmap, BVAR (&buffer_defaults, fringe_indicator_alist)) |
773 | && !NILP (BVAR (&buffer_defaults, fringe_indicator_alist))) | |
7840b332 | 774 | { |
4b4deea2 | 775 | bm2 = Fassq (bitmap, BVAR (&buffer_defaults, fringe_indicator_alist)); |
7840b332 KS |
776 | if (CONSP (bm2)) |
777 | { | |
778 | if ((bm2 = XCDR (bm2)), !NILP (bm2)) | |
779 | { | |
780 | if (CONSP (bm2)) | |
781 | { | |
782 | ln2 = XINT (Flength (bm2)); | |
783 | if (partial_p) | |
784 | { | |
785 | if (ln2 > ix2) | |
786 | { | |
787 | bm = Fnth (make_number (ix2), bm2); | |
788 | if (!EQ (bm, Qt)) | |
789 | goto found; | |
790 | } | |
791 | } | |
792 | } | |
793 | } | |
794 | } | |
795 | } | |
796 | ||
797 | if (ln1 > ix1) | |
798 | { | |
799 | bm = Fnth (make_number (ix1), bm1); | |
800 | if (!EQ (bm, Qt)) | |
801 | goto found; | |
802 | } | |
803 | ||
804 | if (ln2 > ix1) | |
805 | { | |
806 | bm = Fnth (make_number (ix1), bm2); | |
807 | if (!EQ (bm, Qt)) | |
808 | goto found; | |
809 | return NO_FRINGE_BITMAP; | |
810 | } | |
811 | else if ((bm = bm2, NILP (bm))) | |
812 | return NO_FRINGE_BITMAP; | |
813 | ||
814 | found: | |
815 | return lookup_fringe_bitmap (bm); | |
816 | } | |
817 | ||
818 | ||
6b61353c | 819 | void |
971de7fb | 820 | draw_fringe_bitmap (struct window *w, struct glyph_row *row, int left_p) |
6b61353c KH |
821 | { |
822 | int overlay = 0; | |
823 | ||
f951a506 | 824 | if (left_p == row->reversed_p && row->cursor_in_fringe_p) |
6b61353c | 825 | { |
7840b332 | 826 | Lisp_Object cursor = Qnil; |
6b61353c KH |
827 | |
828 | switch (w->phys_cursor_type) | |
829 | { | |
830 | case HOLLOW_BOX_CURSOR: | |
7840b332 KS |
831 | if (row->visible_height >= STANDARD_BITMAP_HEIGHT (hollow_rectangle_bits)) |
832 | cursor = Qhollow; | |
6b61353c | 833 | else |
7840b332 | 834 | cursor = Qhollow_small; |
6b61353c KH |
835 | break; |
836 | case FILLED_BOX_CURSOR: | |
7840b332 | 837 | cursor = Qbox; |
6b61353c KH |
838 | break; |
839 | case BAR_CURSOR: | |
7840b332 | 840 | cursor = Qbar; |
6b61353c KH |
841 | break; |
842 | case HBAR_CURSOR: | |
7840b332 | 843 | cursor = Qhbar; |
6b61353c KH |
844 | break; |
845 | case NO_CURSOR: | |
846 | default: | |
847 | w->phys_cursor_on_p = 0; | |
848 | row->cursor_in_fringe_p = 0; | |
849 | break; | |
850 | } | |
7840b332 | 851 | if (!NILP (cursor)) |
6b61353c | 852 | { |
7840b332 KS |
853 | int bm = get_logical_cursor_bitmap (w, cursor); |
854 | if (bm != NO_FRINGE_BITMAP) | |
855 | { | |
f951a506 | 856 | draw_fringe_bitmap_1 (w, row, left_p, 2, bm); |
7840b332 KS |
857 | overlay = EQ (cursor, Qbox) ? 3 : 1; |
858 | } | |
6b61353c KH |
859 | } |
860 | } | |
861 | ||
862 | draw_fringe_bitmap_1 (w, row, left_p, overlay, NO_FRINGE_BITMAP); | |
863 | ||
a8b34fae | 864 | if (left_p && row->overlay_arrow_bitmap != NO_FRINGE_BITMAP) |
7dfa5c49 | 865 | draw_fringe_bitmap_1 (w, row, 1, 1, row->overlay_arrow_bitmap); |
6b61353c KH |
866 | } |
867 | ||
868 | ||
869 | /* Draw fringe bitmaps for glyph row ROW on window W. Call this | |
870 | function with input blocked. */ | |
871 | ||
872 | void | |
971de7fb | 873 | draw_row_fringe_bitmaps (struct window *w, struct glyph_row *row) |
6b61353c | 874 | { |
4d7e6e51 | 875 | eassert (input_blocked_p ()); |
6b61353c KH |
876 | |
877 | /* If row is completely invisible, because of vscrolling, we | |
878 | don't have to draw anything. */ | |
879 | if (row->visible_height <= 0) | |
880 | return; | |
881 | ||
882 | if (WINDOW_LEFT_FRINGE_WIDTH (w) != 0) | |
883 | draw_fringe_bitmap (w, row, 1); | |
884 | ||
885 | if (WINDOW_RIGHT_FRINGE_WIDTH (w) != 0) | |
886 | draw_fringe_bitmap (w, row, 0); | |
887 | } | |
888 | ||
889 | /* Draw the fringes of window W. Only fringes for rows marked for | |
11491cbb | 890 | update in redraw_fringe_bitmaps_p are drawn. |
6b61353c | 891 | |
11491cbb KS |
892 | Return >0 if left or right fringe was redrawn in any way. |
893 | ||
894 | If NO_FRINGE is non-zero, also return >0 if either fringe has zero width. | |
895 | ||
896 | A return value >0 indicates that the vertical line between windows | |
897 | needs update (as it may be drawn in the fringe). | |
898 | */ | |
899 | ||
900 | int | |
971de7fb | 901 | draw_window_fringes (struct window *w, int no_fringe) |
6b61353c KH |
902 | { |
903 | struct glyph_row *row; | |
904 | int yb = window_text_bottom_y (w); | |
905 | int nrows = w->current_matrix->nrows; | |
5a874e95 | 906 | int y, rn; |
11491cbb | 907 | int updated = 0; |
6b61353c KH |
908 | |
909 | if (w->pseudo_window_p) | |
11491cbb KS |
910 | return 0; |
911 | ||
912 | /* Must draw line if no fringe */ | |
913 | if (no_fringe | |
914 | && (WINDOW_LEFT_FRINGE_WIDTH (w) == 0 | |
915 | || WINDOW_RIGHT_FRINGE_WIDTH (w) == 0)) | |
916 | updated++; | |
6b61353c | 917 | |
5a874e95 | 918 | for (y = w->vscroll, rn = 0, row = w->current_matrix->rows; |
6b61353c KH |
919 | y < yb && rn < nrows; |
920 | y += row->height, ++row, ++rn) | |
921 | { | |
922 | if (!row->redraw_fringe_bitmaps_p) | |
923 | continue; | |
924 | draw_row_fringe_bitmaps (w, row); | |
925 | row->redraw_fringe_bitmaps_p = 0; | |
11491cbb | 926 | updated++; |
6b61353c | 927 | } |
11491cbb KS |
928 | |
929 | return updated; | |
6b61353c KH |
930 | } |
931 | ||
932 | ||
933 | /* Recalculate the bitmaps to show in the fringes of window W. | |
4dadc129 KS |
934 | Only mark rows with modified bitmaps for update in redraw_fringe_bitmaps_p. |
935 | ||
936 | If KEEP_CURRENT_P is 0, update current_matrix too. */ | |
6b61353c KH |
937 | |
938 | int | |
971de7fb | 939 | update_window_fringes (struct window *w, int keep_current_p) |
6b61353c KH |
940 | { |
941 | struct glyph_row *row, *cur = 0; | |
942 | int yb = window_text_bottom_y (w); | |
943 | int rn, nrows = w->current_matrix->nrows; | |
944 | int y; | |
945 | int redraw_p = 0; | |
5797a7a0 KS |
946 | Lisp_Object boundary_top = Qnil, boundary_bot = Qnil; |
947 | Lisp_Object arrow_top = Qnil, arrow_bot = Qnil; | |
948 | Lisp_Object empty_pos; | |
949 | Lisp_Object ind = Qnil; | |
7840b332 KS |
950 | #define MAX_BITMAP_CACHE (8*4) |
951 | int bitmap_cache[MAX_BITMAP_CACHE]; | |
5a874e95 YM |
952 | int top_ind_rn, bot_ind_rn; |
953 | int top_ind_min_y, bot_ind_max_y; | |
40714c53 | 954 | |
ee7683eb | 955 | /* top_ind_rn is set to a nonnegative value whenever |
40714c53 PE |
956 | row->indicate_bob_p is set, so it's OK that top_row_ends_at_zv_p |
957 | is not initialized here. Similarly for bot_ind_rn, | |
958 | row->indicate_eob_p and bot_row_ends_at_zv_p. */ | |
4b1ec863 | 959 | int top_row_ends_at_zv_p IF_LINT (= 0), bot_row_ends_at_zv_p IF_LINT (= 0); |
6b61353c KH |
960 | |
961 | if (w->pseudo_window_p) | |
962 | return 0; | |
963 | ||
964 | if (!MINI_WINDOW_P (w) | |
d3d50620 | 965 | && (ind = BVAR (XBUFFER (w->buffer), indicate_buffer_boundaries), !NILP (ind))) |
6b61353c | 966 | { |
5797a7a0 KS |
967 | if (EQ (ind, Qleft) || EQ (ind, Qright)) |
968 | boundary_top = boundary_bot = arrow_top = arrow_bot = ind; | |
969 | else if (CONSP (ind) && CONSP (XCAR (ind))) | |
970 | { | |
971 | Lisp_Object pos; | |
972 | if (pos = Fassq (Qt, ind), !NILP (pos)) | |
973 | boundary_top = boundary_bot = arrow_top = arrow_bot = XCDR (pos); | |
974 | if (pos = Fassq (Qtop, ind), !NILP (pos)) | |
975 | boundary_top = XCDR (pos); | |
976 | if (pos = Fassq (Qbottom, ind), !NILP (pos)) | |
977 | boundary_bot = XCDR (pos); | |
978 | if (pos = Fassq (Qup, ind), !NILP (pos)) | |
979 | arrow_top = XCDR (pos); | |
980 | if (pos = Fassq (Qdown, ind), !NILP (pos)) | |
981 | arrow_bot = XCDR (pos); | |
982 | } | |
6b61353c | 983 | else |
a208b89c KS |
984 | /* Anything else means boundary on left and no arrows. */ |
985 | boundary_top = boundary_bot = Qleft; | |
5797a7a0 | 986 | } |
6b61353c | 987 | |
5a874e95 | 988 | top_ind_rn = bot_ind_rn = -1; |
5797a7a0 KS |
989 | if (!NILP (ind)) |
990 | { | |
5a874e95 | 991 | for (y = w->vscroll, rn = 0; |
6b61353c KH |
992 | y < yb && rn < nrows; |
993 | y += row->height, ++rn) | |
994 | { | |
6b61353c KH |
995 | row = w->desired_matrix->rows + rn; |
996 | if (!row->enabled_p) | |
997 | row = w->current_matrix->rows + rn; | |
998 | ||
6b61353c KH |
999 | row->indicate_bob_p = row->indicate_top_line_p = 0; |
1000 | row->indicate_eob_p = row->indicate_bottom_line_p = 0; | |
1001 | ||
26a5d440 KS |
1002 | if (!row->mode_line_p) |
1003 | { | |
5a874e95 | 1004 | if (top_ind_rn < 0 && row->visible_height > 0) |
26a5d440 | 1005 | { |
d3d50620 | 1006 | if (MATRIX_ROW_START_CHARPOS (row) <= BUF_BEGV (XBUFFER (w->buffer)) |
18e1c39a | 1007 | && !MATRIX_ROW_PARTIALLY_VISIBLE_AT_TOP_P (w, row)) |
26a5d440 KS |
1008 | row->indicate_bob_p = !NILP (boundary_top); |
1009 | else | |
1010 | row->indicate_top_line_p = !NILP (arrow_top); | |
5a874e95 | 1011 | top_ind_rn = rn; |
26a5d440 | 1012 | } |
6b61353c | 1013 | |
5a874e95 | 1014 | if (bot_ind_rn < 0) |
26a5d440 | 1015 | { |
d3d50620 | 1016 | if (MATRIX_ROW_END_CHARPOS (row) >= BUF_ZV (XBUFFER (w->buffer)) |
18e1c39a | 1017 | && !MATRIX_ROW_PARTIALLY_VISIBLE_AT_BOTTOM_P (w, row)) |
5a874e95 | 1018 | row->indicate_eob_p = !NILP (boundary_bot), bot_ind_rn = rn; |
26a5d440 | 1019 | else if (y + row->height >= yb) |
5a874e95 | 1020 | row->indicate_bottom_line_p = !NILP (arrow_bot), bot_ind_rn = rn; |
26a5d440 KS |
1021 | } |
1022 | } | |
6b61353c KH |
1023 | } |
1024 | } | |
1025 | ||
d3d50620 | 1026 | empty_pos = BVAR (XBUFFER (w->buffer), indicate_empty_lines); |
5797a7a0 KS |
1027 | if (!NILP (empty_pos) && !EQ (empty_pos, Qright)) |
1028 | empty_pos = WINDOW_LEFT_FRINGE_WIDTH (w) == 0 ? Qright : Qleft; | |
6b61353c | 1029 | |
7840b332 KS |
1030 | for (y = 0; y < MAX_BITMAP_CACHE; y++) |
1031 | bitmap_cache[y] = -1; | |
1032 | ||
1033 | #define LEFT_FRINGE(cache, which, partial_p) \ | |
1034 | (bitmap_cache[cache*4+partial_p] >= 0 \ | |
1035 | ? bitmap_cache[cache*4+partial_p] \ | |
1036 | : (bitmap_cache[cache*4+partial_p] = \ | |
1037 | get_logical_fringe_bitmap (w, which, 0, partial_p))) | |
1038 | ||
1039 | #define RIGHT_FRINGE(cache, which, partial_p) \ | |
1040 | (bitmap_cache[cache*4+2+partial_p] >= 0 \ | |
1041 | ? bitmap_cache[cache*4+2+partial_p] \ | |
1042 | : (bitmap_cache[cache*4+2+partial_p] = \ | |
1043 | get_logical_fringe_bitmap (w, which, 1, partial_p))) | |
1044 | ||
1045 | ||
5a874e95 YM |
1046 | /* Extend top-aligned top indicator (or bottom-aligned bottom |
1047 | indicator) to adjacent rows if it doesn't fit in one row. */ | |
1048 | top_ind_min_y = bot_ind_max_y = -1; | |
1049 | if (top_ind_rn >= 0) | |
1050 | { | |
1051 | int bn = NO_FRINGE_BITMAP; | |
1052 | ||
1053 | row = w->desired_matrix->rows + top_ind_rn; | |
1054 | if (!row->enabled_p) | |
1055 | row = w->current_matrix->rows + top_ind_rn; | |
1056 | ||
1057 | top_row_ends_at_zv_p = row->ends_at_zv_p; | |
1058 | if (row->indicate_bob_p) | |
1059 | { | |
1060 | if (EQ (boundary_top, Qleft)) | |
1061 | bn = ((row->indicate_eob_p && EQ (boundary_bot, Qleft)) | |
1062 | ? LEFT_FRINGE (1, Qtop_bottom, row->ends_at_zv_p) | |
1063 | : LEFT_FRINGE (2, Qtop, 0)); | |
1064 | else | |
1065 | bn = ((row->indicate_eob_p && EQ (boundary_bot, Qright)) | |
1066 | ? RIGHT_FRINGE (1, Qtop_bottom, row->ends_at_zv_p) | |
1067 | : RIGHT_FRINGE (2, Qtop, 0)); | |
1068 | } | |
1069 | else if (row->indicate_top_line_p) | |
1070 | { | |
1071 | if (EQ (arrow_top, Qleft)) | |
1072 | bn = LEFT_FRINGE (6, Qup, 0); | |
1073 | else | |
1074 | bn = RIGHT_FRINGE (6, Qup, 0); | |
1075 | } | |
1076 | ||
1077 | if (bn != NO_FRINGE_BITMAP) | |
1078 | { | |
e61124cd | 1079 | struct fringe_bitmap *fb = get_fringe_bitmap_data (bn); |
5a874e95 | 1080 | |
5a874e95 YM |
1081 | if (fb->align == ALIGN_BITMAP_TOP && fb->period == 0) |
1082 | { | |
1083 | struct glyph_row *row1; | |
1084 | int top_ind_max_y; | |
1085 | ||
1086 | top_ind_min_y = WINDOW_HEADER_LINE_HEIGHT (w); | |
1087 | top_ind_max_y = top_ind_min_y + fb->height; | |
1088 | if (top_ind_max_y > yb) | |
1089 | top_ind_max_y = yb; | |
1090 | ||
1091 | for (y = row->y + row->height, rn = top_ind_rn + 1; | |
1092 | y < top_ind_max_y && rn < nrows; | |
1093 | y += row1->height, rn++) | |
1094 | { | |
1095 | if (bot_ind_rn >= 0 && rn >= bot_ind_rn) | |
1096 | break; | |
1097 | ||
1098 | row1 = w->desired_matrix->rows + rn; | |
1099 | if (!row1->enabled_p) | |
1100 | row1 = w->current_matrix->rows + rn; | |
1101 | ||
1102 | row1->indicate_bob_p = row->indicate_bob_p; | |
1103 | row1->indicate_top_line_p = row->indicate_top_line_p; | |
1104 | } | |
1105 | } | |
1106 | } | |
1107 | } | |
1108 | if (bot_ind_rn >= 0) | |
1109 | { | |
1110 | int bn = NO_FRINGE_BITMAP; | |
1111 | ||
1112 | row = w->desired_matrix->rows + bot_ind_rn; | |
1113 | if (!row->enabled_p) | |
1114 | row = w->current_matrix->rows + bot_ind_rn; | |
1115 | ||
1116 | bot_row_ends_at_zv_p = row->ends_at_zv_p; | |
1117 | if (row->indicate_eob_p) | |
1118 | { | |
1119 | if (EQ (boundary_bot, Qleft)) | |
1120 | bn = LEFT_FRINGE (3, Qbottom, row->ends_at_zv_p); | |
1121 | else | |
1122 | bn = RIGHT_FRINGE (3, Qbottom, row->ends_at_zv_p); | |
1123 | } | |
1124 | else if (row->indicate_bottom_line_p) | |
1125 | { | |
1126 | if (EQ (arrow_bot, Qleft)) | |
1127 | bn = LEFT_FRINGE (7, Qdown, 0); | |
1128 | else | |
1129 | bn = RIGHT_FRINGE (7, Qdown, 0); | |
1130 | } | |
1131 | ||
1132 | if (bn != NO_FRINGE_BITMAP) | |
1133 | { | |
e61124cd | 1134 | struct fringe_bitmap *fb = get_fringe_bitmap_data (bn); |
5a874e95 | 1135 | |
5a874e95 YM |
1136 | if (fb->align == ALIGN_BITMAP_BOTTOM && fb->period == 0) |
1137 | { | |
1138 | struct glyph_row *row1; | |
1139 | int bot_ind_min_y; | |
1140 | ||
1141 | bot_ind_max_y = row->y + row->visible_height; | |
1142 | bot_ind_min_y = bot_ind_max_y - fb->height; | |
1143 | if (bot_ind_min_y < WINDOW_HEADER_LINE_HEIGHT (w)) | |
1144 | bot_ind_min_y = WINDOW_HEADER_LINE_HEIGHT (w); | |
1145 | ||
1146 | for (y = row->y, rn = bot_ind_rn - 1; | |
1147 | y >= bot_ind_min_y && rn >= 0; | |
1148 | y -= row1->height, rn--) | |
1149 | { | |
1150 | if (top_ind_rn >= 0 && rn <= top_ind_rn) | |
1151 | break; | |
1152 | ||
1153 | row1 = w->desired_matrix->rows + rn; | |
1154 | if (!row1->enabled_p) | |
1155 | row1 = w->current_matrix->rows + rn; | |
1156 | ||
1157 | row1->indicate_eob_p = row->indicate_eob_p; | |
1158 | row1->indicate_bottom_line_p = row->indicate_bottom_line_p; | |
1159 | } | |
1160 | } | |
1161 | } | |
1162 | } | |
1163 | ||
1164 | for (y = w->vscroll, rn = 0; | |
6b61353c KH |
1165 | y < yb && rn < nrows; |
1166 | y += row->height, rn++) | |
1167 | { | |
7840b332 | 1168 | int left, right; |
6b61353c | 1169 | unsigned left_face_id, right_face_id; |
5a874e95 | 1170 | int left_offset, right_offset; |
e61124cd | 1171 | int periodic_p; |
6b61353c KH |
1172 | |
1173 | row = w->desired_matrix->rows + rn; | |
1174 | cur = w->current_matrix->rows + rn; | |
1175 | if (!row->enabled_p) | |
1176 | row = cur; | |
1177 | ||
1178 | left_face_id = right_face_id = DEFAULT_FACE_ID; | |
5a874e95 | 1179 | left_offset = right_offset = 0; |
e61124cd | 1180 | periodic_p = 0; |
6b61353c KH |
1181 | |
1182 | /* Decide which bitmap to draw in the left fringe. */ | |
1183 | if (WINDOW_LEFT_FRINGE_WIDTH (w) == 0) | |
1184 | left = NO_FRINGE_BITMAP; | |
1185 | else if (row->left_user_fringe_bitmap != NO_FRINGE_BITMAP) | |
1186 | { | |
1187 | left = row->left_user_fringe_bitmap; | |
1188 | left_face_id = row->left_user_fringe_face_id; | |
1189 | } | |
96d79611 EZ |
1190 | else if ((!row->reversed_p && row->truncated_on_left_p) |
1191 | || (row->reversed_p && row->truncated_on_right_p)) | |
5e617bc2 | 1192 | left = LEFT_FRINGE (0, Qtruncation, 0); |
5797a7a0 | 1193 | else if (row->indicate_bob_p && EQ (boundary_top, Qleft)) |
5a874e95 YM |
1194 | { |
1195 | left = ((row->indicate_eob_p && EQ (boundary_bot, Qleft)) | |
1196 | ? LEFT_FRINGE (1, Qtop_bottom, top_row_ends_at_zv_p) | |
1197 | : LEFT_FRINGE (2, Qtop, 0)); | |
1198 | if (top_ind_min_y >= 0) | |
1199 | left_offset = top_ind_min_y - row->y; | |
1200 | } | |
5797a7a0 | 1201 | else if (row->indicate_eob_p && EQ (boundary_bot, Qleft)) |
5a874e95 YM |
1202 | { |
1203 | left = LEFT_FRINGE (3, Qbottom, bot_row_ends_at_zv_p); | |
1204 | if (bot_ind_max_y >= 0) | |
1205 | left_offset = bot_ind_max_y - (row->y + row->visible_height); | |
1206 | } | |
c4affd2c EZ |
1207 | else if ((!row->reversed_p && MATRIX_ROW_CONTINUATION_LINE_P (row)) |
1208 | || (row->reversed_p && row->continued_p)) | |
7840b332 | 1209 | left = LEFT_FRINGE (4, Qcontinuation, 0); |
5797a7a0 | 1210 | else if (row->indicate_empty_line_p && EQ (empty_pos, Qleft)) |
7840b332 | 1211 | left = LEFT_FRINGE (5, Qempty_line, 0); |
5797a7a0 | 1212 | else if (row->indicate_top_line_p && EQ (arrow_top, Qleft)) |
5a874e95 YM |
1213 | { |
1214 | left = LEFT_FRINGE (6, Qup, 0); | |
1215 | if (top_ind_min_y >= 0) | |
1216 | left_offset = top_ind_min_y - row->y; | |
1217 | } | |
5797a7a0 | 1218 | else if (row->indicate_bottom_line_p && EQ (arrow_bot, Qleft)) |
5a874e95 YM |
1219 | { |
1220 | left = LEFT_FRINGE (7, Qdown, 0); | |
1221 | if (bot_ind_max_y >= 0) | |
1222 | left_offset = bot_ind_max_y - (row->y + row->visible_height); | |
1223 | } | |
6b61353c KH |
1224 | else |
1225 | left = NO_FRINGE_BITMAP; | |
1226 | ||
1227 | /* Decide which bitmap to draw in the right fringe. */ | |
1228 | if (WINDOW_RIGHT_FRINGE_WIDTH (w) == 0) | |
1229 | right = NO_FRINGE_BITMAP; | |
1230 | else if (row->right_user_fringe_bitmap != NO_FRINGE_BITMAP) | |
1231 | { | |
1232 | right = row->right_user_fringe_bitmap; | |
1233 | right_face_id = row->right_user_fringe_face_id; | |
1234 | } | |
96d79611 EZ |
1235 | else if ((!row->reversed_p && row->truncated_on_right_p) |
1236 | || (row->reversed_p && row->truncated_on_left_p)) | |
7840b332 | 1237 | right = RIGHT_FRINGE (0, Qtruncation, 0); |
5797a7a0 | 1238 | else if (row->indicate_bob_p && EQ (boundary_top, Qright)) |
5a874e95 YM |
1239 | { |
1240 | right = ((row->indicate_eob_p && EQ (boundary_bot, Qright)) | |
1241 | ? RIGHT_FRINGE (1, Qtop_bottom, top_row_ends_at_zv_p) | |
1242 | : RIGHT_FRINGE (2, Qtop, 0)); | |
1243 | if (top_ind_min_y >= 0) | |
1244 | right_offset = top_ind_min_y - row->y; | |
1245 | } | |
5797a7a0 | 1246 | else if (row->indicate_eob_p && EQ (boundary_bot, Qright)) |
5a874e95 YM |
1247 | { |
1248 | right = RIGHT_FRINGE (3, Qbottom, bot_row_ends_at_zv_p); | |
1249 | if (bot_ind_max_y >= 0) | |
1250 | right_offset = bot_ind_max_y - (row->y + row->visible_height); | |
1251 | } | |
c4affd2c EZ |
1252 | else if ((!row->reversed_p && row->continued_p) |
1253 | || (row->reversed_p && MATRIX_ROW_CONTINUATION_LINE_P (row))) | |
7840b332 | 1254 | right = RIGHT_FRINGE (4, Qcontinuation, 0); |
5797a7a0 | 1255 | else if (row->indicate_top_line_p && EQ (arrow_top, Qright)) |
5a874e95 YM |
1256 | { |
1257 | right = RIGHT_FRINGE (6, Qup, 0); | |
1258 | if (top_ind_min_y >= 0) | |
1259 | right_offset = top_ind_min_y - row->y; | |
1260 | } | |
5797a7a0 | 1261 | else if (row->indicate_bottom_line_p && EQ (arrow_bot, Qright)) |
5a874e95 YM |
1262 | { |
1263 | right = RIGHT_FRINGE (7, Qdown, 0); | |
1264 | if (bot_ind_max_y >= 0) | |
1265 | right_offset = bot_ind_max_y - (row->y + row->visible_height); | |
1266 | } | |
5797a7a0 | 1267 | else if (row->indicate_empty_line_p && EQ (empty_pos, Qright)) |
7840b332 | 1268 | right = RIGHT_FRINGE (5, Qempty_line, 0); |
6b61353c KH |
1269 | else |
1270 | right = NO_FRINGE_BITMAP; | |
1271 | ||
e61124cd YM |
1272 | periodic_p = (get_fringe_bitmap_data (left)->period != 0 |
1273 | || get_fringe_bitmap_data (right)->period != 0); | |
1274 | ||
4dadc129 | 1275 | if (row->y != cur->y |
6b61353c | 1276 | || row->visible_height != cur->visible_height |
81544a1d | 1277 | || row->ends_at_zv_p != cur->ends_at_zv_p |
6b61353c KH |
1278 | || left != cur->left_fringe_bitmap |
1279 | || right != cur->right_fringe_bitmap | |
1280 | || left_face_id != cur->left_fringe_face_id | |
1281 | || right_face_id != cur->right_fringe_face_id | |
5a874e95 YM |
1282 | || left_offset != cur->left_fringe_offset |
1283 | || right_offset != cur->right_fringe_offset | |
e61124cd | 1284 | || periodic_p != cur->fringe_bitmap_periodic_p |
6b61353c KH |
1285 | || cur->redraw_fringe_bitmaps_p) |
1286 | { | |
4dadc129 KS |
1287 | redraw_p = row->redraw_fringe_bitmaps_p = 1; |
1288 | if (!keep_current_p) | |
1289 | { | |
1290 | cur->redraw_fringe_bitmaps_p = 1; | |
1291 | cur->left_fringe_bitmap = left; | |
1292 | cur->right_fringe_bitmap = right; | |
1293 | cur->left_fringe_face_id = left_face_id; | |
1294 | cur->right_fringe_face_id = right_face_id; | |
5a874e95 YM |
1295 | cur->left_fringe_offset = left_offset; |
1296 | cur->right_fringe_offset = right_offset; | |
e61124cd | 1297 | cur->fringe_bitmap_periodic_p = periodic_p; |
4dadc129 | 1298 | } |
6b61353c KH |
1299 | } |
1300 | ||
7dfa5c49 KS |
1301 | if (row->overlay_arrow_bitmap < 0) |
1302 | row->overlay_arrow_bitmap = get_logical_fringe_bitmap (w, Qoverlay_arrow, 0, 0); | |
1303 | ||
a8b34fae | 1304 | if (row->overlay_arrow_bitmap != cur->overlay_arrow_bitmap) |
6b61353c | 1305 | { |
14eca62f YM |
1306 | redraw_p = row->redraw_fringe_bitmaps_p = 1; |
1307 | if (!keep_current_p) | |
1308 | { | |
1309 | cur->redraw_fringe_bitmaps_p = 1; | |
1310 | cur->overlay_arrow_bitmap = row->overlay_arrow_bitmap; | |
1311 | } | |
6b61353c KH |
1312 | } |
1313 | ||
1314 | row->left_fringe_bitmap = left; | |
1315 | row->right_fringe_bitmap = right; | |
1316 | row->left_fringe_face_id = left_face_id; | |
1317 | row->right_fringe_face_id = right_face_id; | |
5a874e95 YM |
1318 | row->left_fringe_offset = left_offset; |
1319 | row->right_fringe_offset = right_offset; | |
e61124cd | 1320 | row->fringe_bitmap_periodic_p = periodic_p; |
6b61353c KH |
1321 | } |
1322 | ||
4dadc129 | 1323 | return redraw_p && !keep_current_p; |
6b61353c KH |
1324 | } |
1325 | ||
1326 | ||
1327 | /* Compute actual fringe widths for frame F. | |
1328 | ||
1329 | If REDRAW is 1, redraw F if the fringe settings was actually | |
1330 | modified and F is visible. | |
1331 | ||
1332 | Since the combined left and right fringe must occupy an integral | |
1333 | number of columns, we may need to add some pixels to each fringe. | |
1334 | Typically, we add an equal amount (+/- 1 pixel) to each fringe, | |
1335 | but a negative width value is taken literally (after negating it). | |
1336 | ||
11491cbb | 1337 | We never make the fringes narrower than specified. |
6b61353c KH |
1338 | */ |
1339 | ||
1340 | void | |
971de7fb | 1341 | compute_fringe_widths (struct frame *f, int redraw) |
6b61353c KH |
1342 | { |
1343 | int o_left = FRAME_LEFT_FRINGE_WIDTH (f); | |
1344 | int o_right = FRAME_RIGHT_FRINGE_WIDTH (f); | |
1345 | int o_cols = FRAME_FRINGE_COLS (f); | |
1346 | ||
e69b0960 DA |
1347 | Lisp_Object left_fringe = Fassq (Qleft_fringe, f->param_alist); |
1348 | Lisp_Object right_fringe = Fassq (Qright_fringe, f->param_alist); | |
6b61353c KH |
1349 | int left_fringe_width, right_fringe_width; |
1350 | ||
1351 | if (!NILP (left_fringe)) | |
1352 | left_fringe = Fcdr (left_fringe); | |
1353 | if (!NILP (right_fringe)) | |
1354 | right_fringe = Fcdr (right_fringe); | |
1355 | ||
1356 | left_fringe_width = ((NILP (left_fringe) || !INTEGERP (left_fringe)) ? 8 : | |
1357 | XINT (left_fringe)); | |
1358 | right_fringe_width = ((NILP (right_fringe) || !INTEGERP (right_fringe)) ? 8 : | |
1359 | XINT (right_fringe)); | |
1360 | ||
1361 | if (left_fringe_width || right_fringe_width) | |
1362 | { | |
1363 | int left_wid = left_fringe_width >= 0 ? left_fringe_width : -left_fringe_width; | |
1364 | int right_wid = right_fringe_width >= 0 ? right_fringe_width : -right_fringe_width; | |
1365 | int conf_wid = left_wid + right_wid; | |
1366 | int font_wid = FRAME_COLUMN_WIDTH (f); | |
1367 | int cols = (left_wid + right_wid + font_wid-1) / font_wid; | |
1368 | int real_wid = cols * font_wid; | |
1369 | if (left_wid && right_wid) | |
1370 | { | |
1371 | if (left_fringe_width < 0) | |
1372 | { | |
1373 | /* Left fringe width is fixed, adjust right fringe if necessary */ | |
1374 | FRAME_LEFT_FRINGE_WIDTH (f) = left_wid; | |
1375 | FRAME_RIGHT_FRINGE_WIDTH (f) = real_wid - left_wid; | |
1376 | } | |
1377 | else if (right_fringe_width < 0) | |
1378 | { | |
1379 | /* Right fringe width is fixed, adjust left fringe if necessary */ | |
1380 | FRAME_LEFT_FRINGE_WIDTH (f) = real_wid - right_wid; | |
1381 | FRAME_RIGHT_FRINGE_WIDTH (f) = right_wid; | |
1382 | } | |
1383 | else | |
1384 | { | |
1385 | /* Adjust both fringes with an equal amount. | |
1386 | Note that we are doing integer arithmetic here, so don't | |
1387 | lose a pixel if the total width is an odd number. */ | |
1388 | int fill = real_wid - conf_wid; | |
1389 | FRAME_LEFT_FRINGE_WIDTH (f) = left_wid + fill/2; | |
1390 | FRAME_RIGHT_FRINGE_WIDTH (f) = right_wid + fill - fill/2; | |
1391 | } | |
1392 | } | |
1393 | else if (left_fringe_width) | |
1394 | { | |
1395 | FRAME_LEFT_FRINGE_WIDTH (f) = real_wid; | |
1396 | FRAME_RIGHT_FRINGE_WIDTH (f) = 0; | |
1397 | } | |
1398 | else | |
1399 | { | |
1400 | FRAME_LEFT_FRINGE_WIDTH (f) = 0; | |
1401 | FRAME_RIGHT_FRINGE_WIDTH (f) = real_wid; | |
1402 | } | |
1403 | FRAME_FRINGE_COLS (f) = cols; | |
1404 | } | |
1405 | else | |
1406 | { | |
1407 | FRAME_LEFT_FRINGE_WIDTH (f) = 0; | |
1408 | FRAME_RIGHT_FRINGE_WIDTH (f) = 0; | |
1409 | FRAME_FRINGE_COLS (f) = 0; | |
1410 | } | |
1411 | ||
1412 | if (redraw && FRAME_VISIBLE_P (f)) | |
1413 | if (o_left != FRAME_LEFT_FRINGE_WIDTH (f) || | |
1414 | o_right != FRAME_RIGHT_FRINGE_WIDTH (f) || | |
1415 | o_cols != FRAME_FRINGE_COLS (f)) | |
1416 | redraw_frame (f); | |
1417 | } | |
1418 | ||
7a2a85be | 1419 | |
4cce0ab7 KS |
1420 | /* Free resources used by a user-defined bitmap. */ |
1421 | ||
bf60f616 | 1422 | static void |
971de7fb | 1423 | destroy_fringe_bitmap (int n) |
6b61353c | 1424 | { |
6b61353c KH |
1425 | struct fringe_bitmap **fbp; |
1426 | ||
49ce2dbd | 1427 | fringe_faces[n] = Qnil; |
6b61353c KH |
1428 | |
1429 | fbp = &fringe_bitmaps[n]; | |
1430 | if (*fbp && (*fbp)->dynamic) | |
1431 | { | |
e581a466 | 1432 | /* XXX Is SELECTED_FRAME OK here? */ |
04ccca97 | 1433 | struct redisplay_interface *rif = FRAME_RIF (SELECTED_FRAME ()); |
f2be4fd0 | 1434 | if (rif && rif->destroy_fringe_bitmap) |
6b61353c KH |
1435 | rif->destroy_fringe_bitmap (n); |
1436 | xfree (*fbp); | |
1437 | *fbp = NULL; | |
1438 | } | |
1439 | ||
1440 | while (max_used_fringe_bitmap > MAX_STANDARD_FRINGE_BITMAPS | |
1441 | && fringe_bitmaps[max_used_fringe_bitmap - 1] == NULL) | |
1442 | max_used_fringe_bitmap--; | |
7a2a85be KS |
1443 | } |
1444 | ||
6b61353c | 1445 | |
7a2a85be KS |
1446 | DEFUN ("destroy-fringe-bitmap", Fdestroy_fringe_bitmap, Sdestroy_fringe_bitmap, |
1447 | 1, 1, 0, | |
1448 | doc: /* Destroy fringe bitmap BITMAP. | |
1449 | If BITMAP overrides a standard fringe bitmap, the original bitmap is restored. */) | |
5842a27b | 1450 | (Lisp_Object bitmap) |
7a2a85be KS |
1451 | { |
1452 | int n; | |
7a2a85be | 1453 | |
4cce0ab7 KS |
1454 | CHECK_SYMBOL (bitmap); |
1455 | n = lookup_fringe_bitmap (bitmap); | |
1456 | if (!n) | |
7a2a85be KS |
1457 | return Qnil; |
1458 | ||
1459 | destroy_fringe_bitmap (n); | |
2d05deef | 1460 | |
4cce0ab7 | 1461 | if (n >= MAX_STANDARD_FRINGE_BITMAPS) |
7a2a85be | 1462 | { |
4cce0ab7 | 1463 | Vfringe_bitmaps = Fdelq (bitmap, Vfringe_bitmaps); |
7a2a85be | 1464 | /* It would be better to remove the fringe property. */ |
4cce0ab7 | 1465 | Fput (bitmap, Qfringe, Qnil); |
7a2a85be | 1466 | } |
4cce0ab7 | 1467 | |
6b61353c KH |
1468 | return Qnil; |
1469 | } | |
1470 | ||
1471 | ||
1472 | /* Initialize bitmap bit. | |
1473 | ||
1474 | On X, we bit-swap the built-in bitmaps and reduce bitmap | |
1475 | from short to char array if width is <= 8 bits. | |
1476 | ||
1477 | On MAC with big-endian CPU, we need to byte-swap each short. | |
1478 | ||
1479 | On W32 and MAC (little endian), there's no need to do this. | |
1480 | */ | |
1481 | ||
2e4e5023 | 1482 | #if defined (HAVE_X_WINDOWS) |
91433552 | 1483 | static const unsigned char swap_nibble[16] = { |
2e4e5023 GM |
1484 | 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */ |
1485 | 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */ | |
1486 | 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */ | |
1487 | 0x3, 0xb, 0x7, 0xf}; /* 0011 1011 0111 1111 */ | |
1488 | #endif /* HAVE_X_WINDOWS */ | |
1489 | ||
bf60f616 | 1490 | static void |
971de7fb | 1491 | init_fringe_bitmap (int which, struct fringe_bitmap *fb, int once_p) |
6b61353c KH |
1492 | { |
1493 | if (once_p || fb->dynamic) | |
1494 | { | |
1495 | #if defined (HAVE_X_WINDOWS) | |
6b61353c KH |
1496 | unsigned short *bits = fb->bits; |
1497 | int j; | |
1498 | ||
1499 | if (fb->width <= 8) | |
1500 | { | |
1501 | unsigned char *cbits = (unsigned char *)fb->bits; | |
1502 | for (j = 0; j < fb->height; j++) | |
1503 | { | |
1504 | unsigned short b = *bits++; | |
1505 | unsigned char c; | |
1506 | c = (unsigned char)((swap_nibble[b & 0xf] << 4) | |
1507 | | (swap_nibble[(b>>4) & 0xf])); | |
1508 | *cbits++ = (c >> (8 - fb->width)); | |
1509 | } | |
1510 | } | |
1511 | else | |
1512 | { | |
1513 | for (j = 0; j < fb->height; j++) | |
1514 | { | |
1515 | unsigned short b = *bits; | |
1516 | b = (unsigned short)((swap_nibble[b & 0xf] << 12) | |
1517 | | (swap_nibble[(b>>4) & 0xf] << 8) | |
1518 | | (swap_nibble[(b>>8) & 0xf] << 4) | |
1519 | | (swap_nibble[(b>>12) & 0xf])); | |
4e8231f3 | 1520 | b >>= (16 - fb->width); |
671d409f | 1521 | #ifdef WORDS_BIGENDIAN |
4e8231f3 YM |
1522 | b = ((b >> 8) | (b << 8)); |
1523 | #endif | |
1524 | *bits++ = b; | |
6b61353c KH |
1525 | } |
1526 | } | |
1527 | #endif /* HAVE_X_WINDOWS */ | |
1528 | ||
6b61353c KH |
1529 | } |
1530 | ||
1531 | if (!once_p) | |
1532 | { | |
e581a466 | 1533 | /* XXX Is SELECTED_FRAME OK here? */ |
04ccca97 | 1534 | struct redisplay_interface *rif = FRAME_RIF (SELECTED_FRAME ()); |
a284b538 | 1535 | |
7a2a85be | 1536 | destroy_fringe_bitmap (which); |
6b61353c | 1537 | |
f2be4fd0 | 1538 | if (rif && rif->define_fringe_bitmap) |
6b61353c KH |
1539 | rif->define_fringe_bitmap (which, fb->bits, fb->height, fb->width); |
1540 | ||
1541 | fringe_bitmaps[which] = fb; | |
1542 | if (which >= max_used_fringe_bitmap) | |
1543 | max_used_fringe_bitmap = which + 1; | |
1544 | } | |
1545 | } | |
1546 | ||
1547 | ||
1548 | DEFUN ("define-fringe-bitmap", Fdefine_fringe_bitmap, Sdefine_fringe_bitmap, | |
7a2a85be KS |
1549 | 2, 5, 0, |
1550 | doc: /* Define fringe bitmap BITMAP from BITS of size HEIGHT x WIDTH. | |
2faacff7 | 1551 | BITMAP is a symbol identifying the new fringe bitmap. |
6b61353c KH |
1552 | BITS is either a string or a vector of integers. |
1553 | HEIGHT is height of bitmap. If HEIGHT is nil, use length of BITS. | |
1554 | WIDTH must be an integer between 1 and 16, or nil which defaults to 8. | |
7a2a85be | 1555 | Optional fifth arg ALIGN may be one of `top', `center', or `bottom', |
6b61353c | 1556 | indicating the positioning of the bitmap relative to the rows where it |
6b72791f | 1557 | is used; the default is to center the bitmap. Fifth arg may also be a |
6b61353c KH |
1558 | list (ALIGN PERIODIC) where PERIODIC non-nil specifies that the bitmap |
1559 | should be repeated. | |
7a2a85be | 1560 | If BITMAP already exists, the existing definition is replaced. */) |
5842a27b | 1561 | (Lisp_Object bitmap, Lisp_Object bits, Lisp_Object height, Lisp_Object width, Lisp_Object align) |
6b61353c | 1562 | { |
6b61353c KH |
1563 | int n, h, i, j; |
1564 | unsigned short *b; | |
1565 | struct fringe_bitmap fb, *xfb; | |
1566 | int fill1 = 0, fill2 = 0; | |
7a2a85be | 1567 | |
4cce0ab7 | 1568 | CHECK_SYMBOL (bitmap); |
6b61353c | 1569 | |
11e04b2d KS |
1570 | if (STRINGP (bits)) |
1571 | h = SCHARS (bits); | |
1572 | else if (VECTORP (bits)) | |
77b37c05 | 1573 | h = ASIZE (bits); |
11e04b2d | 1574 | else |
7fee0b51 | 1575 | wrong_type_argument (Qsequencep, bits); |
6b61353c KH |
1576 | |
1577 | if (NILP (height)) | |
11e04b2d | 1578 | fb.height = h; |
6b61353c KH |
1579 | else |
1580 | { | |
1581 | CHECK_NUMBER (height); | |
d311d28c | 1582 | fb.height = max (0, min (XINT (height), 255)); |
11e04b2d | 1583 | if (fb.height > h) |
6b61353c | 1584 | { |
6b61353c KH |
1585 | fill1 = (fb.height - h) / 2; |
1586 | fill2 = fb.height - h - fill1; | |
1587 | } | |
1588 | } | |
1589 | ||
1590 | if (NILP (width)) | |
1591 | fb.width = 8; | |
1592 | else | |
1593 | { | |
1594 | CHECK_NUMBER (width); | |
d311d28c | 1595 | fb.width = max (0, min (XINT (width), 255)); |
6b61353c KH |
1596 | } |
1597 | ||
1598 | fb.period = 0; | |
1599 | fb.align = ALIGN_BITMAP_CENTER; | |
1600 | ||
1601 | if (CONSP (align)) | |
1602 | { | |
1603 | Lisp_Object period = XCDR (align); | |
1604 | if (CONSP (period)) | |
1605 | { | |
1606 | period = XCAR (period); | |
1607 | if (!NILP (period)) | |
1608 | { | |
1609 | fb.period = fb.height; | |
1610 | fb.height = 255; | |
1611 | } | |
1612 | } | |
1613 | align = XCAR (align); | |
1614 | } | |
1615 | if (EQ (align, Qtop)) | |
1616 | fb.align = ALIGN_BITMAP_TOP; | |
1617 | else if (EQ (align, Qbottom)) | |
1618 | fb.align = ALIGN_BITMAP_BOTTOM; | |
1619 | else if (!NILP (align) && !EQ (align, Qcenter)) | |
1620 | error ("Bad align argument"); | |
1621 | ||
ad67849e | 1622 | n = lookup_fringe_bitmap (bitmap); |
4cce0ab7 | 1623 | if (!n) |
6b61353c | 1624 | { |
ad67849e | 1625 | if (max_used_fringe_bitmap < max_fringe_bitmaps) |
6b61353c KH |
1626 | n = max_used_fringe_bitmap++; |
1627 | else | |
1628 | { | |
1629 | for (n = MAX_STANDARD_FRINGE_BITMAPS; | |
ad67849e | 1630 | n < max_fringe_bitmaps; |
6b61353c KH |
1631 | n++) |
1632 | if (fringe_bitmaps[n] == NULL) | |
1633 | break; | |
ad67849e KS |
1634 | |
1635 | if (n == max_fringe_bitmaps) | |
1636 | { | |
483a9e21 PE |
1637 | int bitmaps = max_fringe_bitmaps + 20; |
1638 | if (MAX_FRINGE_BITMAPS < bitmaps) | |
ad67849e KS |
1639 | error ("No free fringe bitmap slots"); |
1640 | ||
1641 | i = max_fringe_bitmaps; | |
38182d90 PE |
1642 | fringe_bitmaps = xrealloc (fringe_bitmaps, |
1643 | bitmaps * sizeof *fringe_bitmaps); | |
1644 | fringe_faces = xrealloc (fringe_faces, | |
1645 | bitmaps * sizeof *fringe_faces); | |
ad67849e | 1646 | |
483a9e21 | 1647 | for (i = max_fringe_bitmaps; i < bitmaps; i++) |
ad67849e KS |
1648 | { |
1649 | fringe_bitmaps[i] = NULL; | |
49ce2dbd | 1650 | fringe_faces[i] = Qnil; |
ad67849e | 1651 | } |
483a9e21 PE |
1652 | |
1653 | max_fringe_bitmaps = bitmaps; | |
ad67849e | 1654 | } |
6b61353c | 1655 | } |
7a2a85be | 1656 | |
4cce0ab7 KS |
1657 | Vfringe_bitmaps = Fcons (bitmap, Vfringe_bitmaps); |
1658 | Fput (bitmap, Qfringe, make_number (n)); | |
6b61353c KH |
1659 | } |
1660 | ||
1661 | fb.dynamic = 1; | |
1662 | ||
23f86fce | 1663 | xfb = xmalloc (sizeof fb + fb.height * BYTES_PER_BITMAP_ROW); |
6b61353c | 1664 | fb.bits = b = (unsigned short *) (xfb + 1); |
72af86bd | 1665 | memset (b, 0, fb.height); |
6b61353c KH |
1666 | |
1667 | j = 0; | |
1668 | while (j < fb.height) | |
1669 | { | |
1670 | for (i = 0; i < fill1 && j < fb.height; i++) | |
1671 | b[j++] = 0; | |
1672 | for (i = 0; i < h && j < fb.height; i++) | |
1673 | { | |
1674 | Lisp_Object elt = Faref (bits, make_number (i)); | |
1675 | b[j++] = NUMBERP (elt) ? XINT (elt) : 0; | |
1676 | } | |
1677 | for (i = 0; i < fill2 && j < fb.height; i++) | |
1678 | b[j++] = 0; | |
1679 | } | |
1680 | ||
1681 | *xfb = fb; | |
1682 | ||
1683 | init_fringe_bitmap (n, xfb, 0); | |
1684 | ||
4cce0ab7 | 1685 | return bitmap; |
6b61353c KH |
1686 | } |
1687 | ||
1688 | DEFUN ("set-fringe-bitmap-face", Fset_fringe_bitmap_face, Sset_fringe_bitmap_face, | |
1689 | 1, 2, 0, | |
7a2a85be | 1690 | doc: /* Set face for fringe bitmap BITMAP to FACE. |
6b61353c | 1691 | If FACE is nil, reset face to default fringe face. */) |
5842a27b | 1692 | (Lisp_Object bitmap, Lisp_Object face) |
6b61353c | 1693 | { |
4cce0ab7 | 1694 | int n; |
6b61353c | 1695 | |
4cce0ab7 KS |
1696 | CHECK_SYMBOL (bitmap); |
1697 | n = lookup_fringe_bitmap (bitmap); | |
1698 | if (!n) | |
7a2a85be | 1699 | error ("Undefined fringe bitmap"); |
6b61353c | 1700 | |
44286096 CY |
1701 | /* The purpose of the following code is to signal an error if FACE |
1702 | is not a face. This is for the caller's convenience only; the | |
1703 | redisplay code should be able to fail gracefully. Skip the check | |
1704 | if FRINGE_FACE_ID is unrealized (as in batch mode and during | |
1705 | daemon startup). */ | |
6b61353c KH |
1706 | if (!NILP (face)) |
1707 | { | |
44286096 CY |
1708 | struct frame *f = SELECTED_FRAME (); |
1709 | ||
1710 | if (FACE_FROM_ID (f, FRINGE_FACE_ID) | |
1711 | && lookup_derived_face (f, face, FRINGE_FACE_ID, 1) < 0) | |
6b61353c KH |
1712 | error ("No such face"); |
1713 | } | |
6b61353c | 1714 | |
49ce2dbd | 1715 | fringe_faces[n] = face; |
6b61353c KH |
1716 | return Qnil; |
1717 | } | |
1718 | ||
1719 | DEFUN ("fringe-bitmaps-at-pos", Ffringe_bitmaps_at_pos, Sfringe_bitmaps_at_pos, | |
1720 | 0, 2, 0, | |
1721 | doc: /* Return fringe bitmaps of row containing position POS in window WINDOW. | |
1722 | If WINDOW is nil, use selected window. If POS is nil, use value of point | |
d3848fe9 KS |
1723 | in that window. Return value is a list (LEFT RIGHT OV), where LEFT |
1724 | is the symbol for the bitmap in the left fringe (or nil if no bitmap), | |
1725 | RIGHT is similar for the right fringe, and OV is non-nil if there is an | |
1726 | overlay arrow in the left fringe. | |
5797a7a0 | 1727 | Return nil if POS is not visible in WINDOW. */) |
5842a27b | 1728 | (Lisp_Object pos, Lisp_Object window) |
6b61353c KH |
1729 | { |
1730 | struct window *w; | |
6b61353c | 1731 | struct glyph_row *row; |
d311d28c | 1732 | ptrdiff_t textpos; |
6b61353c KH |
1733 | |
1734 | if (NILP (window)) | |
1735 | window = selected_window; | |
1736 | CHECK_WINDOW (window); | |
1737 | w = XWINDOW (window); | |
1738 | ||
1739 | if (!NILP (pos)) | |
1740 | { | |
1741 | CHECK_NUMBER_COERCE_MARKER (pos); | |
d311d28c PE |
1742 | if (! (BEGV <= XINT (pos) && XINT (pos) <= ZV)) |
1743 | args_out_of_range (window, pos); | |
6b61353c KH |
1744 | textpos = XINT (pos); |
1745 | } | |
1746 | else if (w == XWINDOW (selected_window)) | |
1747 | textpos = PT; | |
1748 | else | |
d3d50620 | 1749 | textpos = XMARKER (w->pointm)->charpos; |
6b61353c KH |
1750 | |
1751 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
1752 | row = row_containing_pos (w, textpos, row, NULL, 0); | |
1753 | if (row) | |
d3848fe9 KS |
1754 | return list3 (get_fringe_bitmap_name (row->left_fringe_bitmap), |
1755 | get_fringe_bitmap_name (row->right_fringe_bitmap), | |
a8b34fae KS |
1756 | (row->overlay_arrow_bitmap == 0 ? Qnil |
1757 | : row->overlay_arrow_bitmap < 0 ? Qt | |
1758 | : get_fringe_bitmap_name (row->overlay_arrow_bitmap))); | |
6b61353c KH |
1759 | else |
1760 | return Qnil; | |
1761 | } | |
1762 | ||
1763 | ||
1764 | /*********************************************************************** | |
1765 | Initialization | |
1766 | ***********************************************************************/ | |
1767 | ||
1768 | void | |
971de7fb | 1769 | syms_of_fringe (void) |
6b61353c | 1770 | { |
cd3520a4 JB |
1771 | DEFSYM (Qtruncation, "truncation"); |
1772 | DEFSYM (Qcontinuation, "continuation"); | |
1773 | DEFSYM (Qoverlay_arrow, "overlay-arrow"); | |
1774 | DEFSYM (Qempty_line, "empty-line"); | |
1775 | DEFSYM (Qtop_bottom, "top-bottom"); | |
1776 | DEFSYM (Qhollow_small, "hollow-small"); | |
7840b332 | 1777 | |
6b61353c KH |
1778 | defsubr (&Sdestroy_fringe_bitmap); |
1779 | defsubr (&Sdefine_fringe_bitmap); | |
1780 | defsubr (&Sfringe_bitmaps_at_pos); | |
1781 | defsubr (&Sset_fringe_bitmap_face); | |
1782 | ||
29208e82 | 1783 | DEFVAR_LISP ("overflow-newline-into-fringe", Voverflow_newline_into_fringe, |
fb7ada5f | 1784 | doc: /* Non-nil means that newline may flow into the right fringe. |
6b61353c KH |
1785 | This means that display lines which are exactly as wide as the window |
1786 | (not counting the final newline) will only occupy one screen line, by | |
1787 | showing (or hiding) the final newline in the right fringe; when point | |
1788 | is at the final newline, the cursor is shown in the right fringe. | |
1789 | If nil, also continue lines which are exactly as wide as the window. */); | |
1790 | Voverflow_newline_into_fringe = Qt; | |
1791 | ||
29208e82 | 1792 | DEFVAR_LISP ("fringe-bitmaps", Vfringe_bitmaps, |
a4b7b036 | 1793 | doc: /* List of fringe bitmap symbols. */); |
7a2a85be | 1794 | Vfringe_bitmaps = Qnil; |
6b61353c KH |
1795 | } |
1796 | ||
49ce2dbd KS |
1797 | /* Garbage collection hook */ |
1798 | ||
1799 | void | |
971de7fb | 1800 | mark_fringe_data (void) |
49ce2dbd KS |
1801 | { |
1802 | int i; | |
1803 | ||
1804 | for (i = 0; i < max_fringe_bitmaps; i++) | |
1805 | if (!NILP (fringe_faces[i])) | |
1806 | mark_object (fringe_faces[i]); | |
1807 | } | |
1808 | ||
6b61353c KH |
1809 | /* Initialize this module when Emacs starts. */ |
1810 | ||
1811 | void | |
971de7fb | 1812 | init_fringe_once (void) |
6b61353c | 1813 | { |
7840b332 | 1814 | int bt; |
6b61353c KH |
1815 | |
1816 | for (bt = NO_FRINGE_BITMAP + 1; bt < MAX_STANDARD_FRINGE_BITMAPS; bt++) | |
5e617bc2 | 1817 | init_fringe_bitmap (bt, &standard_bitmaps[bt], 1); |
6b61353c KH |
1818 | } |
1819 | ||
1820 | void | |
971de7fb | 1821 | init_fringe (void) |
6b61353c KH |
1822 | { |
1823 | int i; | |
1824 | ||
ad67849e KS |
1825 | max_fringe_bitmaps = MAX_STANDARD_FRINGE_BITMAPS + 20; |
1826 | ||
38182d90 PE |
1827 | fringe_bitmaps = xzalloc (max_fringe_bitmaps * sizeof *fringe_bitmaps); |
1828 | fringe_faces = xmalloc (max_fringe_bitmaps * sizeof *fringe_faces); | |
ad67849e KS |
1829 | |
1830 | for (i = 0; i < max_fringe_bitmaps; i++) | |
23f86fce | 1831 | fringe_faces[i] = Qnil; |
6b61353c KH |
1832 | } |
1833 | ||
9e2a2647 | 1834 | #ifdef HAVE_NTGUI |
6b61353c KH |
1835 | |
1836 | void | |
9e2a2647 | 1837 | w32_init_fringe (struct redisplay_interface *rif) |
6b61353c | 1838 | { |
7840b332 | 1839 | int bt; |
6b61353c | 1840 | |
f2be4fd0 KS |
1841 | if (!rif) |
1842 | return; | |
1843 | ||
6b61353c KH |
1844 | for (bt = NO_FRINGE_BITMAP + 1; bt < MAX_STANDARD_FRINGE_BITMAPS; bt++) |
1845 | { | |
1846 | struct fringe_bitmap *fb = &standard_bitmaps[bt]; | |
1847 | rif->define_fringe_bitmap (bt, fb->bits, fb->height, fb->width); | |
1848 | } | |
1849 | } | |
1850 | ||
1851 | void | |
7c3320d8 | 1852 | w32_reset_fringes (void) |
6b61353c KH |
1853 | { |
1854 | /* Destroy row bitmaps. */ | |
1855 | int bt; | |
5c217767 | 1856 | struct redisplay_interface *rif = FRAME_RIF (SELECTED_FRAME ()); |
6b61353c | 1857 | |
f2be4fd0 KS |
1858 | if (!rif) |
1859 | return; | |
1860 | ||
6b61353c KH |
1861 | for (bt = NO_FRINGE_BITMAP + 1; bt < max_used_fringe_bitmap; bt++) |
1862 | rif->destroy_fringe_bitmap (bt); | |
1863 | } | |
1864 | ||
1865 | #endif /* HAVE_NTGUI */ | |
1866 | ||
1867 | #endif /* HAVE_WINDOW_SYSTEM */ |