Commit | Line | Data |
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6b61353c | 1 | /* Fringe handling (split from xdisp.c). |
ba318903 | 2 | Copyright (C) 1985-1988, 1993-1995, 1997-2014 Free Software |
ab422c4d | 3 | Foundation, Inc. |
6b61353c KH |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
9ec0b715 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
6b61353c | 8 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
6b61353c KH |
11 | |
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
6b61353c KH |
19 | |
20 | #include <config.h> | |
21 | #include <stdio.h> | |
22 | ||
4eed3157 PE |
23 | #include <byteswap.h> |
24 | ||
6b61353c KH |
25 | #include "lisp.h" |
26 | #include "frame.h" | |
27 | #include "window.h" | |
28 | #include "dispextern.h" | |
e5560ff7 | 29 | #include "character.h" |
6b61353c KH |
30 | #include "buffer.h" |
31 | #include "blockinput.h" | |
e581a466 | 32 | #include "termhooks.h" |
6b61353c | 33 | |
7840b332 KS |
34 | /* Fringe bitmaps are represented in three different ways: |
35 | ||
36 | Logical bitmaps are used internally to denote things like | |
37 | 'end-of-buffer', 'left-truncation', 'overlay-arrow', etc. | |
38 | ||
e4920bc9 | 39 | Physical bitmaps specify the visual appearance of the bitmap, |
7840b332 KS |
40 | e.g. 'bottom-left-angle', 'left-arrow', 'left-triangle', etc. |
41 | User defined bitmaps are physical bitmaps. | |
42 | ||
43 | Internally, fringe bitmaps for a specific display row are | |
44 | represented as a simple integer that is used as an index | |
45 | into the table of all defined bitmaps. This index is stored | |
46 | in the `fringe' property of the physical bitmap symbol. | |
47 | ||
48 | Logical bitmaps are mapped to physical bitmaps through the | |
49 | buffer-local `fringe-indicator-alist' variable. | |
50 | ||
51 | Each element of this alist is a cons (LOGICAL . PHYSICAL) | |
52 | mapping a logical bitmap to a physical bitmap. | |
53 | PHYSICAL is either a symbol to use in both left and right fringe, | |
54 | or a cons of two symbols (LEFT . RIGHT) denoting different | |
55 | bitmaps to use in left and right fringe. | |
56 | ||
57 | LOGICAL is first looked up in the window's buffer's buffer-local | |
58 | value of the fringe-indicator-alist variable, and if not present, | |
59 | in the global value of fringe-indicator-alist. | |
60 | ||
61 | If LOGICAL is not present in either alist, or the PHYSICAL value | |
62 | found is nil, no bitmap is shown for the logical bitmap. | |
63 | ||
64 | The `left-fringe' and `right-fringe' display properties | |
65 | must specify physical bitmap symbols. | |
66 | */ | |
67 | ||
955cbe7b PE |
68 | static Lisp_Object Qtruncation, Qcontinuation, Qoverlay_arrow; |
69 | static Lisp_Object Qempty_line, Qtop_bottom; | |
70 | static Lisp_Object Qhollow_small; | |
6b61353c KH |
71 | |
72 | enum fringe_bitmap_align | |
73 | { | |
74 | ALIGN_BITMAP_CENTER = 0, | |
75 | ALIGN_BITMAP_TOP, | |
76 | ALIGN_BITMAP_BOTTOM | |
77 | }; | |
78 | ||
79 | struct fringe_bitmap | |
80 | { | |
81 | unsigned short *bits; | |
82 | unsigned height : 8; | |
83 | unsigned width : 8; | |
84 | unsigned period : 8; | |
85 | unsigned align : 2; | |
96c06863 | 86 | bool_bf dynamic : 1; |
6b61353c KH |
87 | }; |
88 | ||
89 | \f | |
90 | /*********************************************************************** | |
91 | Fringe bitmaps | |
92 | ***********************************************************************/ | |
93 | ||
94 | /* Undefined bitmap. A question mark. */ | |
95 | /* | |
96 | ..xxxx.. | |
97 | .xxxxxx. | |
98 | xx....xx | |
99 | xx....xx | |
100 | ....xx.. | |
101 | ...xx... | |
102 | ...xx... | |
103 | ........ | |
104 | ...xx... | |
105 | ...xx... | |
106 | */ | |
7840b332 | 107 | static unsigned short question_mark_bits[] = { |
6b61353c KH |
108 | 0x3c, 0x7e, 0x7e, 0x0c, 0x18, 0x18, 0x00, 0x18, 0x18}; |
109 | ||
2e2d2a13 | 110 | /* An exclamation mark. */ |
cd276f6e LL |
111 | /* |
112 | ...XX... | |
113 | ...XX... | |
114 | ...XX... | |
115 | ...XX... | |
116 | ...XX... | |
117 | ...XX... | |
118 | ...XX... | |
119 | ........ | |
120 | ...XX... | |
121 | ...XX... | |
122 | */ | |
123 | static unsigned short exclamation_mark_bits[] = { | |
124 | 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x00, 0x18}; | |
125 | ||
6b61353c KH |
126 | /* An arrow like this: `<-'. */ |
127 | /* | |
128 | ...xx... | |
129 | ..xx.... | |
130 | .xx..... | |
131 | xxxxxx.. | |
132 | xxxxxx.. | |
133 | .xx..... | |
134 | ..xx.... | |
135 | ...xx... | |
136 | */ | |
137 | static unsigned short left_arrow_bits[] = { | |
138 | 0x18, 0x30, 0x60, 0xfc, 0xfc, 0x60, 0x30, 0x18}; | |
139 | ||
140 | ||
141 | /* Right truncation arrow bitmap `->'. */ | |
142 | /* | |
143 | ...xx... | |
144 | ....xx.. | |
145 | .....xx. | |
146 | ..xxxxxx | |
147 | ..xxxxxx | |
148 | .....xx. | |
149 | ....xx.. | |
150 | ...xx... | |
151 | */ | |
152 | static unsigned short right_arrow_bits[] = { | |
153 | 0x18, 0x0c, 0x06, 0x3f, 0x3f, 0x06, 0x0c, 0x18}; | |
154 | ||
155 | ||
156 | /* Up arrow bitmap. */ | |
157 | /* | |
158 | ...xx... | |
159 | ..xxxx.. | |
160 | .xxxxxx. | |
161 | xxxxxxxx | |
162 | ...xx... | |
163 | ...xx... | |
164 | ...xx... | |
165 | ...xx... | |
166 | */ | |
167 | static unsigned short up_arrow_bits[] = { | |
168 | 0x18, 0x3c, 0x7e, 0xff, 0x18, 0x18, 0x18, 0x18}; | |
169 | ||
170 | ||
171 | /* Down arrow bitmap. */ | |
172 | /* | |
173 | ...xx... | |
174 | ...xx... | |
175 | ...xx... | |
176 | ...xx... | |
177 | xxxxxxxx | |
178 | .xxxxxx. | |
179 | ..xxxx.. | |
180 | ...xx... | |
181 | */ | |
182 | static unsigned short down_arrow_bits[] = { | |
183 | 0x18, 0x18, 0x18, 0x18, 0xff, 0x7e, 0x3c, 0x18}; | |
184 | ||
6b61353c KH |
185 | /* Marker for continuation lines. */ |
186 | /* | |
187 | ..xxxx.. | |
188 | .xxxxx.. | |
189 | xx...... | |
190 | xxx..x.. | |
191 | xxxxxx.. | |
192 | .xxxxx.. | |
193 | ..xxxx.. | |
194 | .xxxxx.. | |
195 | */ | |
7840b332 | 196 | static unsigned short left_curly_arrow_bits[] = { |
6b61353c KH |
197 | 0x3c, 0x7c, 0xc0, 0xe4, 0xfc, 0x7c, 0x3c, 0x7c}; |
198 | ||
7840b332 | 199 | /* Marker for continued lines. */ |
6b61353c | 200 | /* |
7840b332 KS |
201 | ..xxxx.. |
202 | ..xxxxx. | |
203 | ......xx | |
204 | ..x..xxx | |
205 | ..xxxxxx | |
206 | ..xxxxx. | |
207 | ..xxxx.. | |
208 | ..xxxxx. | |
6b61353c | 209 | */ |
7840b332 KS |
210 | static unsigned short right_curly_arrow_bits[] = { |
211 | 0x3c, 0x3e, 0x03, 0x27, 0x3f, 0x3e, 0x3c, 0x3e}; | |
6b61353c | 212 | |
6b61353c KH |
213 | /* Reverse Overlay arrow bitmap. A triangular arrow. */ |
214 | /* | |
215 | ......xx | |
216 | ....xxxx | |
217 | ...xxxxx | |
218 | ..xxxxxx | |
219 | ..xxxxxx | |
220 | ...xxxxx | |
221 | ....xxxx | |
222 | ......xx | |
223 | */ | |
7840b332 | 224 | static unsigned short left_triangle_bits[] = { |
6b61353c | 225 | 0x03, 0x0f, 0x1f, 0x3f, 0x3f, 0x1f, 0x0f, 0x03}; |
7840b332 KS |
226 | |
227 | /* Overlay arrow bitmap. A triangular arrow. */ | |
228 | /* | |
229 | xx...... | |
230 | xxxx.... | |
231 | xxxxx... | |
232 | xxxxxx.. | |
233 | xxxxxx.. | |
234 | xxxxx... | |
235 | xxxx.... | |
236 | xx...... | |
237 | */ | |
238 | static unsigned short right_triangle_bits[] = { | |
239 | 0xc0, 0xf0, 0xf8, 0xfc, 0xfc, 0xf8, 0xf0, 0xc0}; | |
6b61353c KH |
240 | |
241 | /* First line bitmap. An top-left angle. */ | |
242 | /* | |
243 | xxxxxx.. | |
244 | xxxxxx.. | |
245 | xx...... | |
246 | xx...... | |
247 | xx...... | |
248 | xx...... | |
249 | xx...... | |
250 | ........ | |
251 | */ | |
252 | static unsigned short top_left_angle_bits[] = { | |
253 | 0xfc, 0xfc, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0x00}; | |
254 | ||
255 | /* First line bitmap. An right-up angle. */ | |
256 | /* | |
257 | ..xxxxxx | |
258 | ..xxxxxx | |
259 | ......xx | |
260 | ......xx | |
261 | ......xx | |
262 | ......xx | |
263 | ......xx | |
264 | ........ | |
265 | */ | |
266 | static unsigned short top_right_angle_bits[] = { | |
267 | 0x3f, 0x3f, 0x03, 0x03, 0x03, 0x03, 0x03, 0x00}; | |
268 | ||
269 | /* Last line bitmap. An left-down angle. */ | |
270 | /* | |
271 | ........ | |
272 | xx...... | |
273 | xx...... | |
274 | xx...... | |
275 | xx...... | |
276 | xx...... | |
277 | xxxxxx.. | |
278 | xxxxxx.. | |
279 | */ | |
280 | static unsigned short bottom_left_angle_bits[] = { | |
281 | 0x00, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xfc, 0xfc}; | |
282 | ||
283 | /* Last line bitmap. An right-down angle. */ | |
284 | /* | |
285 | ........ | |
286 | ......xx | |
287 | ......xx | |
288 | ......xx | |
289 | ......xx | |
290 | ......xx | |
291 | ..xxxxxx | |
292 | ..xxxxxx | |
293 | */ | |
294 | static unsigned short bottom_right_angle_bits[] = { | |
295 | 0x00, 0x03, 0x03, 0x03, 0x03, 0x03, 0x3f, 0x3f}; | |
296 | ||
297 | /* First/last line bitmap. An left bracket. */ | |
298 | /* | |
299 | xxxxxx.. | |
300 | xxxxxx.. | |
301 | xx...... | |
302 | xx...... | |
303 | xx...... | |
304 | xx...... | |
305 | xx...... | |
306 | xx...... | |
307 | xxxxxx.. | |
308 | xxxxxx.. | |
309 | */ | |
310 | static unsigned short left_bracket_bits[] = { | |
311 | 0xfc, 0xfc, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xfc, 0xfc}; | |
312 | ||
313 | /* First/last line bitmap. An right bracket. */ | |
314 | /* | |
315 | ..xxxxxx | |
316 | ..xxxxxx | |
317 | ......xx | |
318 | ......xx | |
319 | ......xx | |
320 | ......xx | |
321 | ......xx | |
322 | ......xx | |
323 | ..xxxxxx | |
324 | ..xxxxxx | |
325 | */ | |
326 | static unsigned short right_bracket_bits[] = { | |
327 | 0x3f, 0x3f, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x3f, 0x3f}; | |
328 | ||
329 | /* Filled box cursor bitmap. A filled box; max 13 pixels high. */ | |
330 | /* | |
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 | xxxxxxx. | |
344 | */ | |
7840b332 | 345 | static unsigned short filled_rectangle_bits[] = { |
6b61353c KH |
346 | 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe}; |
347 | ||
348 | /* Hollow box cursor bitmap. A hollow box; max 13 pixels high. */ | |
349 | /* | |
350 | xxxxxxx. | |
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 | x.....x. | |
362 | xxxxxxx. | |
363 | */ | |
7840b332 | 364 | static unsigned short hollow_rectangle_bits[] = { |
6b61353c KH |
365 | 0xfe, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0xfe}; |
366 | ||
7840b332 KS |
367 | /* Hollow square bitmap. */ |
368 | /* | |
369 | .xxxxxx. | |
370 | .x....x. | |
371 | .x....x. | |
372 | .x....x. | |
373 | .x....x. | |
374 | .xxxxxx. | |
375 | */ | |
376 | static unsigned short hollow_square_bits[] = { | |
377 | 0x7e, 0x42, 0x42, 0x42, 0x42, 0x7e}; | |
378 | ||
379 | /* Filled square bitmap. */ | |
380 | /* | |
381 | .xxxxxx. | |
382 | .xxxxxx. | |
383 | .xxxxxx. | |
384 | .xxxxxx. | |
385 | .xxxxxx. | |
386 | .xxxxxx. | |
387 | */ | |
388 | static unsigned short filled_square_bits[] = { | |
389 | 0x7e, 0x7e, 0x7e, 0x7e, 0x7e, 0x7e}; | |
390 | ||
6b61353c KH |
391 | /* Bar cursor bitmap. A vertical bar; max 13 pixels high. */ |
392 | /* | |
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 | xx...... | |
406 | */ | |
7840b332 | 407 | static unsigned short vertical_bar_bits[] = { |
6b61353c KH |
408 | 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0}; |
409 | ||
68a33afa | 410 | /* HBar cursor bitmap. A horizontal bar; 2 pixels high. */ |
6b61353c KH |
411 | /* |
412 | xxxxxxx. | |
413 | xxxxxxx. | |
414 | */ | |
68a33afa | 415 | static unsigned short horizontal_bar_bits[] = { |
6b61353c KH |
416 | 0xfe, 0xfe}; |
417 | ||
418 | ||
419 | /* Bitmap drawn to indicate lines not displaying text if | |
420 | `indicate-empty-lines' is non-nil. */ | |
421 | /* | |
422 | ........ | |
423 | ..xxxx.. | |
424 | ........ | |
425 | ........ | |
426 | ..xxxx.. | |
427 | ........ | |
428 | */ | |
7840b332 | 429 | static unsigned short empty_line_bits[] = { |
6b61353c KH |
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 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00}; | |
438 | ||
6b61353c KH |
439 | |
440 | #define BYTES_PER_BITMAP_ROW (sizeof (unsigned short)) | |
441 | #define STANDARD_BITMAP_HEIGHT(bits) (sizeof (bits)/BYTES_PER_BITMAP_ROW) | |
442 | #define FRBITS(bits) bits, STANDARD_BITMAP_HEIGHT (bits) | |
443 | ||
7840b332 KS |
444 | /* NOTE: The order of these bitmaps must match the sequence |
445 | used in fringe.el to define the corresponding symbols. */ | |
446 | ||
ad9a7a06 | 447 | static struct fringe_bitmap standard_bitmaps[] = |
6b61353c KH |
448 | { |
449 | { NULL, 0, 0, 0, 0, 0 }, /* NO_FRINGE_BITMAP */ | |
7840b332 | 450 | { FRBITS (question_mark_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
cd276f6e | 451 | { FRBITS (exclamation_mark_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
6b61353c KH |
452 | { FRBITS (left_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
453 | { FRBITS (right_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
454 | { FRBITS (up_arrow_bits), 8, 0, ALIGN_BITMAP_TOP, 0 }, | |
455 | { FRBITS (down_arrow_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, | |
7840b332 KS |
456 | { FRBITS (left_curly_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
457 | { FRBITS (right_curly_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
458 | { FRBITS (left_triangle_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
459 | { FRBITS (right_triangle_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
6b61353c KH |
460 | { FRBITS (top_left_angle_bits), 8, 0, ALIGN_BITMAP_TOP, 0 }, |
461 | { FRBITS (top_right_angle_bits), 8, 0, ALIGN_BITMAP_TOP, 0 }, | |
462 | { FRBITS (bottom_left_angle_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, | |
463 | { FRBITS (bottom_right_angle_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, | |
464 | { FRBITS (left_bracket_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
465 | { FRBITS (right_bracket_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
7840b332 KS |
466 | { FRBITS (filled_rectangle_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
467 | { FRBITS (hollow_rectangle_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
468 | { FRBITS (filled_square_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
6b61353c | 469 | { FRBITS (hollow_square_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
7840b332 | 470 | { FRBITS (vertical_bar_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, |
68a33afa | 471 | { FRBITS (horizontal_bar_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, |
7840b332 | 472 | { FRBITS (empty_line_bits), 8, 3, ALIGN_BITMAP_TOP, 0 }, |
6b61353c KH |
473 | }; |
474 | ||
7840b332 KS |
475 | #define NO_FRINGE_BITMAP 0 |
476 | #define UNDEF_FRINGE_BITMAP 1 | |
c72d972c | 477 | #define MAX_STANDARD_FRINGE_BITMAPS ARRAYELTS (standard_bitmaps) |
7840b332 | 478 | |
ad67849e | 479 | static struct fringe_bitmap **fringe_bitmaps; |
49ce2dbd | 480 | static Lisp_Object *fringe_faces; |
ad67849e | 481 | static int max_fringe_bitmaps; |
6b61353c | 482 | |
edfda783 | 483 | int max_used_fringe_bitmap = MAX_STANDARD_FRINGE_BITMAPS; |
6b61353c | 484 | |
4cce0ab7 KS |
485 | |
486 | /* Lookup bitmap number for symbol BITMAP. | |
487 | Return 0 if not a bitmap. */ | |
6b61353c KH |
488 | |
489 | int | |
971de7fb | 490 | lookup_fringe_bitmap (Lisp_Object bitmap) |
7a2a85be | 491 | { |
d311d28c | 492 | EMACS_INT bn; |
7a2a85be | 493 | |
4cce0ab7 | 494 | bitmap = Fget (bitmap, Qfringe); |
7a2a85be KS |
495 | if (!INTEGERP (bitmap)) |
496 | return 0; | |
497 | ||
498 | bn = XINT (bitmap); | |
4cce0ab7 KS |
499 | if (bn > NO_FRINGE_BITMAP |
500 | && bn < max_used_fringe_bitmap | |
501 | && (bn < MAX_STANDARD_FRINGE_BITMAPS | |
502 | || fringe_bitmaps[bn] != NULL)) | |
503 | return bn; | |
504 | ||
505 | return 0; | |
7a2a85be KS |
506 | } |
507 | ||
508 | /* Get fringe bitmap name for bitmap number BN. | |
509 | ||
510 | Found by traversing Vfringe_bitmaps comparing BN to the | |
511 | fringe property for each symbol. | |
512 | ||
513 | Return BN if not found in Vfringe_bitmaps. */ | |
514 | ||
515 | static Lisp_Object | |
971de7fb | 516 | get_fringe_bitmap_name (int bn) |
7a2a85be KS |
517 | { |
518 | Lisp_Object bitmaps; | |
519 | Lisp_Object num; | |
520 | ||
521 | /* Zero means no bitmap -- return nil. */ | |
522 | if (bn <= 0) | |
523 | return Qnil; | |
524 | ||
525 | bitmaps = Vfringe_bitmaps; | |
526 | num = make_number (bn); | |
527 | ||
528 | while (CONSP (bitmaps)) | |
529 | { | |
530 | Lisp_Object bitmap = XCAR (bitmaps); | |
531 | if (EQ (num, Fget (bitmap, Qfringe))) | |
532 | return bitmap; | |
533 | bitmaps = XCDR (bitmaps); | |
534 | } | |
535 | ||
536 | return num; | |
537 | } | |
538 | ||
e61124cd YM |
539 | /* Get fringe bitmap data for bitmap number BN. */ |
540 | ||
541 | static struct fringe_bitmap * | |
542 | get_fringe_bitmap_data (int bn) | |
543 | { | |
544 | struct fringe_bitmap *fb; | |
545 | ||
546 | fb = fringe_bitmaps[bn]; | |
547 | if (fb == NULL) | |
548 | fb = &standard_bitmaps[bn < MAX_STANDARD_FRINGE_BITMAPS | |
549 | ? bn : UNDEF_FRINGE_BITMAP]; | |
550 | ||
551 | return fb; | |
552 | } | |
7a2a85be | 553 | |
6b61353c KH |
554 | /* Draw the bitmap WHICH in one of the left or right fringes of |
555 | window W. ROW is the glyph row for which to display the bitmap; it | |
556 | determines the vertical position at which the bitmap has to be | |
557 | drawn. | |
558 | LEFT_P is 1 for left fringe, 0 for right fringe. | |
559 | */ | |
560 | ||
7840b332 | 561 | static void |
971de7fb | 562 | draw_fringe_bitmap_1 (struct window *w, struct glyph_row *row, int left_p, int overlay, int which) |
6b61353c KH |
563 | { |
564 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
565 | struct draw_fringe_bitmap_params p; | |
566 | struct fringe_bitmap *fb; | |
567 | int period; | |
568 | int face_id = DEFAULT_FACE_ID; | |
5a874e95 | 569 | int offset, header_line_height; |
6b61353c | 570 | |
6b61353c KH |
571 | p.overlay_p = (overlay & 1) == 1; |
572 | p.cursor_p = (overlay & 2) == 2; | |
573 | ||
574 | if (which != NO_FRINGE_BITMAP) | |
575 | { | |
5a874e95 | 576 | offset = 0; |
6b61353c KH |
577 | } |
578 | else if (left_p) | |
579 | { | |
580 | which = row->left_fringe_bitmap; | |
581 | face_id = row->left_fringe_face_id; | |
5a874e95 | 582 | offset = row->left_fringe_offset; |
6b61353c KH |
583 | } |
584 | else | |
585 | { | |
586 | which = row->right_fringe_bitmap; | |
587 | face_id = row->right_fringe_face_id; | |
5a874e95 | 588 | offset = row->right_fringe_offset; |
6b61353c KH |
589 | } |
590 | ||
591 | if (face_id == DEFAULT_FACE_ID) | |
49ce2dbd | 592 | { |
67aecef9 CY |
593 | Lisp_Object face = fringe_faces[which]; |
594 | face_id = NILP (face) ? lookup_named_face (f, Qfringe, 0) | |
595 | : lookup_derived_face (f, face, FRINGE_FACE_ID, 0); | |
596 | if (face_id < 0) | |
49ce2dbd KS |
597 | face_id = FRINGE_FACE_ID; |
598 | } | |
6b61353c | 599 | |
e61124cd | 600 | fb = get_fringe_bitmap_data (which); |
6b61353c KH |
601 | |
602 | period = fb->period; | |
603 | ||
604 | /* Convert row to frame coordinates. */ | |
5a874e95 | 605 | p.y = WINDOW_TO_FRAME_PIXEL_Y (w, row->y) + offset; |
6b61353c KH |
606 | |
607 | p.which = which; | |
608 | p.bits = fb->bits; | |
609 | p.wd = fb->width; | |
610 | ||
611 | p.h = fb->height; | |
612 | p.dh = (period > 0 ? (p.y % period) : 0); | |
613 | p.h -= p.dh; | |
5a874e95 YM |
614 | |
615 | /* Adjust y to the offset in the row to start drawing the bitmap. */ | |
616 | switch (fb->align) | |
617 | { | |
618 | case ALIGN_BITMAP_CENTER: | |
619 | p.y += (row->height - p.h) / 2; | |
620 | break; | |
621 | case ALIGN_BITMAP_BOTTOM: | |
622 | p.y += (row->visible_height - p.h); | |
623 | break; | |
624 | case ALIGN_BITMAP_TOP: | |
625 | break; | |
626 | } | |
6b61353c KH |
627 | |
628 | p.face = FACE_FROM_ID (f, face_id); | |
629 | ||
630 | if (p.face == NULL) | |
631 | { | |
49ce2dbd KS |
632 | /* This could happen after clearing face cache. |
633 | But it shouldn't happen anymore. ++kfs */ | |
6b61353c KH |
634 | return; |
635 | } | |
636 | ||
2e120be4 | 637 | prepare_face_for_display (f, p.face); |
6b61353c KH |
638 | |
639 | /* Clear left fringe if no bitmap to draw or if bitmap doesn't fill | |
640 | the fringe. */ | |
641 | p.bx = -1; | |
5a874e95 YM |
642 | header_line_height = WINDOW_HEADER_LINE_HEIGHT (w); |
643 | p.by = WINDOW_TO_FRAME_PIXEL_Y (w, max (header_line_height, row->y)); | |
644 | p.ny = row->visible_height; | |
6b61353c KH |
645 | if (left_p) |
646 | { | |
647 | int wd = WINDOW_LEFT_FRINGE_WIDTH (w); | |
648 | int x = window_box_left (w, (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
649 | ? LEFT_MARGIN_AREA | |
650 | : TEXT_AREA)); | |
651 | if (p.wd > wd) | |
652 | p.wd = wd; | |
653 | p.x = x - p.wd - (wd - p.wd) / 2; | |
654 | ||
5a874e95 | 655 | if (p.wd < wd || p.y > p.by || p.y + p.h < p.by + p.ny) |
6b61353c KH |
656 | { |
657 | /* If W has a vertical border to its left, don't draw over it. */ | |
658 | wd -= ((!WINDOW_LEFTMOST_P (w) | |
880e6158 MR |
659 | /* This could be wrong when we allow window local |
660 | right dividers - but the window on the left is hard | |
661 | to get. */ | |
662 | && !FRAME_RIGHT_DIVIDER_WIDTH (f) | |
aba05ce9 EZ |
663 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
664 | /* But don't reduce the fringe width if the window | |
665 | has a left margin, because that means we are not | |
666 | in danger of drawing over the vertical border, | |
667 | and OTOH leaving out that one pixel leaves behind | |
668 | traces of the cursor, if it was in column zero | |
669 | before drawing non-empty margin area. */ | |
eeaf9bf3 | 670 | && w->left_margin_cols == 0) |
6b61353c KH |
671 | ? 1 : 0); |
672 | p.bx = x - wd; | |
673 | p.nx = wd; | |
674 | } | |
675 | } | |
676 | else | |
677 | { | |
678 | int x = window_box_right (w, | |
679 | (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
680 | ? RIGHT_MARGIN_AREA | |
681 | : TEXT_AREA)); | |
682 | int wd = WINDOW_RIGHT_FRINGE_WIDTH (w); | |
683 | if (p.wd > wd) | |
684 | p.wd = wd; | |
685 | p.x = x + (wd - p.wd) / 2; | |
686 | /* Clear right fringe if no bitmap to draw of if bitmap doesn't fill | |
687 | the fringe. */ | |
5a874e95 | 688 | if (p.wd < wd || p.y > p.by || p.y + p.h < p.by + p.ny) |
6b61353c KH |
689 | { |
690 | p.bx = x; | |
691 | p.nx = wd; | |
692 | } | |
693 | } | |
694 | ||
415e3810 MR |
695 | if (p.x >= WINDOW_BOX_LEFT_EDGE_X (w) |
696 | && (p.x + p.wd) <= WINDOW_BOX_LEFT_EDGE_X (w) + WINDOW_PIXEL_WIDTH (w)) | |
697 | FRAME_RIF (f)->draw_fringe_bitmap (w, row, &p); | |
6b61353c KH |
698 | } |
699 | ||
7840b332 | 700 | static int |
971de7fb | 701 | get_logical_cursor_bitmap (struct window *w, Lisp_Object cursor) |
7840b332 KS |
702 | { |
703 | Lisp_Object cmap, bm = Qnil; | |
704 | ||
e74aeda8 | 705 | if ((cmap = BVAR (XBUFFER (w->contents), fringe_cursor_alist)), !NILP (cmap)) |
7840b332 KS |
706 | { |
707 | bm = Fassq (cursor, cmap); | |
708 | if (CONSP (bm)) | |
709 | { | |
710 | if ((bm = XCDR (bm)), NILP (bm)) | |
711 | return NO_FRINGE_BITMAP; | |
712 | return lookup_fringe_bitmap (bm); | |
713 | } | |
714 | } | |
4b4deea2 | 715 | if (EQ (cmap, BVAR (&buffer_defaults, fringe_cursor_alist))) |
7840b332 | 716 | return NO_FRINGE_BITMAP; |
4b4deea2 | 717 | bm = Fassq (cursor, BVAR (&buffer_defaults, fringe_cursor_alist)); |
7840b332 KS |
718 | if (!CONSP (bm) || ((bm = XCDR (bm)), NILP (bm))) |
719 | return NO_FRINGE_BITMAP; | |
720 | return lookup_fringe_bitmap (bm); | |
721 | } | |
722 | ||
723 | static int | |
971de7fb | 724 | get_logical_fringe_bitmap (struct window *w, Lisp_Object bitmap, int right_p, int partial_p) |
7840b332 KS |
725 | { |
726 | Lisp_Object cmap, bm1 = Qnil, bm2 = Qnil, bm; | |
d311d28c | 727 | EMACS_INT ln1 = 0, ln2 = 0; |
7840b332 KS |
728 | int ix1 = right_p; |
729 | int ix2 = ix1 + (partial_p ? 2 : 0); | |
730 | ||
731 | /* Lookup in buffer-local fringe-indicator-alist before global alist. | |
732 | ||
733 | Elements are: | |
734 | BITMAP -- use for all | |
735 | (L R) -- use for left right (whether partial or not) | |
78edd3b7 | 736 | (L R PL PR) -- use for left right partial-left partial-right |
7840b332 KS |
737 | If any value in local binding is not present or t, use global value. |
738 | ||
739 | If partial, lookup partial bitmap in default value if not found here. | |
740 | If not partial, or no partial spec is present, use non-partial bitmap. */ | |
741 | ||
e74aeda8 | 742 | if ((cmap = BVAR (XBUFFER (w->contents), fringe_indicator_alist)), !NILP (cmap)) |
7840b332 KS |
743 | { |
744 | bm1 = Fassq (bitmap, cmap); | |
745 | if (CONSP (bm1)) | |
746 | { | |
747 | if ((bm1 = XCDR (bm1)), NILP (bm1)) | |
748 | return NO_FRINGE_BITMAP; | |
749 | if (CONSP (bm1)) | |
750 | { | |
751 | ln1 = XINT (Flength (bm1)); | |
752 | if (partial_p) | |
753 | { | |
754 | if (ln1 > ix2) | |
755 | { | |
756 | bm = Fnth (make_number (ix2), bm1); | |
757 | if (!EQ (bm, Qt)) | |
758 | goto found; | |
759 | } | |
760 | } | |
761 | else | |
762 | { | |
763 | if (ln1 > ix1) | |
764 | { | |
765 | bm = Fnth (make_number (ix1), bm1); | |
766 | if (!EQ (bm, Qt)) | |
767 | goto found; | |
768 | } | |
769 | } | |
770 | } | |
771 | else if ((bm = bm1, !EQ (bm, Qt))) | |
772 | goto found; | |
773 | } | |
774 | } | |
775 | ||
4b4deea2 TT |
776 | if (!EQ (cmap, BVAR (&buffer_defaults, fringe_indicator_alist)) |
777 | && !NILP (BVAR (&buffer_defaults, fringe_indicator_alist))) | |
7840b332 | 778 | { |
4b4deea2 | 779 | bm2 = Fassq (bitmap, BVAR (&buffer_defaults, fringe_indicator_alist)); |
7840b332 KS |
780 | if (CONSP (bm2)) |
781 | { | |
782 | if ((bm2 = XCDR (bm2)), !NILP (bm2)) | |
783 | { | |
784 | if (CONSP (bm2)) | |
785 | { | |
786 | ln2 = XINT (Flength (bm2)); | |
787 | if (partial_p) | |
788 | { | |
789 | if (ln2 > ix2) | |
790 | { | |
791 | bm = Fnth (make_number (ix2), bm2); | |
792 | if (!EQ (bm, Qt)) | |
793 | goto found; | |
794 | } | |
795 | } | |
796 | } | |
797 | } | |
798 | } | |
799 | } | |
800 | ||
801 | if (ln1 > ix1) | |
802 | { | |
803 | bm = Fnth (make_number (ix1), bm1); | |
804 | if (!EQ (bm, Qt)) | |
805 | goto found; | |
806 | } | |
807 | ||
808 | if (ln2 > ix1) | |
809 | { | |
810 | bm = Fnth (make_number (ix1), bm2); | |
811 | if (!EQ (bm, Qt)) | |
812 | goto found; | |
813 | return NO_FRINGE_BITMAP; | |
814 | } | |
815 | else if ((bm = bm2, NILP (bm))) | |
816 | return NO_FRINGE_BITMAP; | |
817 | ||
818 | found: | |
819 | return lookup_fringe_bitmap (bm); | |
820 | } | |
821 | ||
822 | ||
6b61353c | 823 | void |
971de7fb | 824 | draw_fringe_bitmap (struct window *w, struct glyph_row *row, int left_p) |
6b61353c KH |
825 | { |
826 | int overlay = 0; | |
827 | ||
f951a506 | 828 | if (left_p == row->reversed_p && row->cursor_in_fringe_p) |
6b61353c | 829 | { |
7840b332 | 830 | Lisp_Object cursor = Qnil; |
6b61353c KH |
831 | |
832 | switch (w->phys_cursor_type) | |
833 | { | |
834 | case HOLLOW_BOX_CURSOR: | |
7840b332 KS |
835 | if (row->visible_height >= STANDARD_BITMAP_HEIGHT (hollow_rectangle_bits)) |
836 | cursor = Qhollow; | |
6b61353c | 837 | else |
7840b332 | 838 | cursor = Qhollow_small; |
6b61353c KH |
839 | break; |
840 | case FILLED_BOX_CURSOR: | |
7840b332 | 841 | cursor = Qbox; |
6b61353c KH |
842 | break; |
843 | case BAR_CURSOR: | |
7840b332 | 844 | cursor = Qbar; |
6b61353c KH |
845 | break; |
846 | case HBAR_CURSOR: | |
7840b332 | 847 | cursor = Qhbar; |
6b61353c KH |
848 | break; |
849 | case NO_CURSOR: | |
850 | default: | |
851 | w->phys_cursor_on_p = 0; | |
852 | row->cursor_in_fringe_p = 0; | |
853 | break; | |
854 | } | |
7840b332 | 855 | if (!NILP (cursor)) |
6b61353c | 856 | { |
7840b332 KS |
857 | int bm = get_logical_cursor_bitmap (w, cursor); |
858 | if (bm != NO_FRINGE_BITMAP) | |
859 | { | |
f951a506 | 860 | draw_fringe_bitmap_1 (w, row, left_p, 2, bm); |
7840b332 KS |
861 | overlay = EQ (cursor, Qbox) ? 3 : 1; |
862 | } | |
6b61353c KH |
863 | } |
864 | } | |
865 | ||
866 | draw_fringe_bitmap_1 (w, row, left_p, overlay, NO_FRINGE_BITMAP); | |
867 | ||
a8b34fae | 868 | if (left_p && row->overlay_arrow_bitmap != NO_FRINGE_BITMAP) |
7dfa5c49 | 869 | draw_fringe_bitmap_1 (w, row, 1, 1, row->overlay_arrow_bitmap); |
6b61353c KH |
870 | } |
871 | ||
872 | ||
873 | /* Draw fringe bitmaps for glyph row ROW on window W. Call this | |
874 | function with input blocked. */ | |
875 | ||
876 | void | |
971de7fb | 877 | draw_row_fringe_bitmaps (struct window *w, struct glyph_row *row) |
6b61353c | 878 | { |
4d7e6e51 | 879 | eassert (input_blocked_p ()); |
6b61353c KH |
880 | |
881 | /* If row is completely invisible, because of vscrolling, we | |
882 | don't have to draw anything. */ | |
883 | if (row->visible_height <= 0) | |
884 | return; | |
885 | ||
886 | if (WINDOW_LEFT_FRINGE_WIDTH (w) != 0) | |
887 | draw_fringe_bitmap (w, row, 1); | |
888 | ||
889 | if (WINDOW_RIGHT_FRINGE_WIDTH (w) != 0) | |
890 | draw_fringe_bitmap (w, row, 0); | |
891 | } | |
892 | ||
893 | /* Draw the fringes of window W. Only fringes for rows marked for | |
11491cbb | 894 | update in redraw_fringe_bitmaps_p are drawn. |
6b61353c | 895 | |
d7e6881a | 896 | Return nonzero if left or right fringe was redrawn in any way. |
11491cbb | 897 | |
d7e6881a DA |
898 | If NO_FRINGE_P is non-zero, also return nonzero if either fringe |
899 | has zero width. | |
11491cbb | 900 | |
d7e6881a DA |
901 | A return nonzero value indicates that the vertical line between |
902 | windows needs update (as it may be drawn in the fringe). | |
11491cbb KS |
903 | */ |
904 | ||
d7e6881a DA |
905 | bool |
906 | draw_window_fringes (struct window *w, bool no_fringe_p) | |
6b61353c KH |
907 | { |
908 | struct glyph_row *row; | |
909 | int yb = window_text_bottom_y (w); | |
910 | int nrows = w->current_matrix->nrows; | |
5a874e95 | 911 | int y, rn; |
d7e6881a | 912 | bool updated_p = 0; |
6b61353c KH |
913 | |
914 | if (w->pseudo_window_p) | |
d7e6881a | 915 | return updated_p; |
11491cbb KS |
916 | |
917 | /* Must draw line if no fringe */ | |
d7e6881a | 918 | if (no_fringe_p |
11491cbb KS |
919 | && (WINDOW_LEFT_FRINGE_WIDTH (w) == 0 |
920 | || WINDOW_RIGHT_FRINGE_WIDTH (w) == 0)) | |
d7e6881a | 921 | updated_p = 1; |
6b61353c | 922 | |
5a874e95 | 923 | for (y = w->vscroll, rn = 0, row = w->current_matrix->rows; |
6b61353c KH |
924 | y < yb && rn < nrows; |
925 | y += row->height, ++row, ++rn) | |
926 | { | |
927 | if (!row->redraw_fringe_bitmaps_p) | |
928 | continue; | |
929 | draw_row_fringe_bitmaps (w, row); | |
930 | row->redraw_fringe_bitmaps_p = 0; | |
d7e6881a | 931 | updated_p = 1; |
6b61353c | 932 | } |
11491cbb | 933 | |
d7e6881a | 934 | return updated_p; |
6b61353c KH |
935 | } |
936 | ||
937 | ||
938 | /* Recalculate the bitmaps to show in the fringes of window W. | |
4dadc129 KS |
939 | Only mark rows with modified bitmaps for update in redraw_fringe_bitmaps_p. |
940 | ||
941 | If KEEP_CURRENT_P is 0, update current_matrix too. */ | |
6b61353c | 942 | |
d7e6881a DA |
943 | bool |
944 | update_window_fringes (struct window *w, bool keep_current_p) | |
6b61353c KH |
945 | { |
946 | struct glyph_row *row, *cur = 0; | |
947 | int yb = window_text_bottom_y (w); | |
948 | int rn, nrows = w->current_matrix->nrows; | |
949 | int y; | |
d7e6881a | 950 | bool redraw_p = 0; |
5797a7a0 KS |
951 | Lisp_Object boundary_top = Qnil, boundary_bot = Qnil; |
952 | Lisp_Object arrow_top = Qnil, arrow_bot = Qnil; | |
953 | Lisp_Object empty_pos; | |
954 | Lisp_Object ind = Qnil; | |
7840b332 KS |
955 | #define MAX_BITMAP_CACHE (8*4) |
956 | int bitmap_cache[MAX_BITMAP_CACHE]; | |
5a874e95 YM |
957 | int top_ind_rn, bot_ind_rn; |
958 | int top_ind_min_y, bot_ind_max_y; | |
40714c53 | 959 | |
ee7683eb | 960 | /* top_ind_rn is set to a nonnegative value whenever |
40714c53 PE |
961 | row->indicate_bob_p is set, so it's OK that top_row_ends_at_zv_p |
962 | is not initialized here. Similarly for bot_ind_rn, | |
963 | row->indicate_eob_p and bot_row_ends_at_zv_p. */ | |
4b1ec863 | 964 | int top_row_ends_at_zv_p IF_LINT (= 0), bot_row_ends_at_zv_p IF_LINT (= 0); |
6b61353c KH |
965 | |
966 | if (w->pseudo_window_p) | |
967 | return 0; | |
968 | ||
969 | if (!MINI_WINDOW_P (w) | |
e74aeda8 | 970 | && (ind = BVAR (XBUFFER (w->contents), indicate_buffer_boundaries), !NILP (ind))) |
6b61353c | 971 | { |
5797a7a0 KS |
972 | if (EQ (ind, Qleft) || EQ (ind, Qright)) |
973 | boundary_top = boundary_bot = arrow_top = arrow_bot = ind; | |
974 | else if (CONSP (ind) && CONSP (XCAR (ind))) | |
975 | { | |
976 | Lisp_Object pos; | |
977 | if (pos = Fassq (Qt, ind), !NILP (pos)) | |
978 | boundary_top = boundary_bot = arrow_top = arrow_bot = XCDR (pos); | |
979 | if (pos = Fassq (Qtop, ind), !NILP (pos)) | |
980 | boundary_top = XCDR (pos); | |
981 | if (pos = Fassq (Qbottom, ind), !NILP (pos)) | |
982 | boundary_bot = XCDR (pos); | |
983 | if (pos = Fassq (Qup, ind), !NILP (pos)) | |
984 | arrow_top = XCDR (pos); | |
985 | if (pos = Fassq (Qdown, ind), !NILP (pos)) | |
986 | arrow_bot = XCDR (pos); | |
987 | } | |
6b61353c | 988 | else |
a208b89c KS |
989 | /* Anything else means boundary on left and no arrows. */ |
990 | boundary_top = boundary_bot = Qleft; | |
5797a7a0 | 991 | } |
6b61353c | 992 | |
5a874e95 | 993 | top_ind_rn = bot_ind_rn = -1; |
5797a7a0 KS |
994 | if (!NILP (ind)) |
995 | { | |
5a874e95 | 996 | for (y = w->vscroll, rn = 0; |
6b61353c KH |
997 | y < yb && rn < nrows; |
998 | y += row->height, ++rn) | |
999 | { | |
6b61353c KH |
1000 | row = w->desired_matrix->rows + rn; |
1001 | if (!row->enabled_p) | |
1002 | row = w->current_matrix->rows + rn; | |
1003 | ||
6b61353c KH |
1004 | row->indicate_bob_p = row->indicate_top_line_p = 0; |
1005 | row->indicate_eob_p = row->indicate_bottom_line_p = 0; | |
1006 | ||
26a5d440 KS |
1007 | if (!row->mode_line_p) |
1008 | { | |
5a874e95 | 1009 | if (top_ind_rn < 0 && row->visible_height > 0) |
26a5d440 | 1010 | { |
e74aeda8 | 1011 | if (MATRIX_ROW_START_CHARPOS (row) <= BUF_BEGV (XBUFFER (w->contents)) |
18e1c39a | 1012 | && !MATRIX_ROW_PARTIALLY_VISIBLE_AT_TOP_P (w, row)) |
26a5d440 KS |
1013 | row->indicate_bob_p = !NILP (boundary_top); |
1014 | else | |
1015 | row->indicate_top_line_p = !NILP (arrow_top); | |
5a874e95 | 1016 | top_ind_rn = rn; |
26a5d440 | 1017 | } |
6b61353c | 1018 | |
5a874e95 | 1019 | if (bot_ind_rn < 0) |
26a5d440 | 1020 | { |
e74aeda8 | 1021 | if (MATRIX_ROW_END_CHARPOS (row) >= BUF_ZV (XBUFFER (w->contents)) |
18e1c39a | 1022 | && !MATRIX_ROW_PARTIALLY_VISIBLE_AT_BOTTOM_P (w, row)) |
5a874e95 | 1023 | row->indicate_eob_p = !NILP (boundary_bot), bot_ind_rn = rn; |
26a5d440 | 1024 | else if (y + row->height >= yb) |
5a874e95 | 1025 | row->indicate_bottom_line_p = !NILP (arrow_bot), bot_ind_rn = rn; |
26a5d440 KS |
1026 | } |
1027 | } | |
6b61353c KH |
1028 | } |
1029 | } | |
1030 | ||
e74aeda8 | 1031 | empty_pos = BVAR (XBUFFER (w->contents), indicate_empty_lines); |
5797a7a0 KS |
1032 | if (!NILP (empty_pos) && !EQ (empty_pos, Qright)) |
1033 | empty_pos = WINDOW_LEFT_FRINGE_WIDTH (w) == 0 ? Qright : Qleft; | |
6b61353c | 1034 | |
7840b332 KS |
1035 | for (y = 0; y < MAX_BITMAP_CACHE; y++) |
1036 | bitmap_cache[y] = -1; | |
1037 | ||
1038 | #define LEFT_FRINGE(cache, which, partial_p) \ | |
1039 | (bitmap_cache[cache*4+partial_p] >= 0 \ | |
1040 | ? bitmap_cache[cache*4+partial_p] \ | |
1041 | : (bitmap_cache[cache*4+partial_p] = \ | |
1042 | get_logical_fringe_bitmap (w, which, 0, partial_p))) | |
1043 | ||
1044 | #define RIGHT_FRINGE(cache, which, partial_p) \ | |
1045 | (bitmap_cache[cache*4+2+partial_p] >= 0 \ | |
1046 | ? bitmap_cache[cache*4+2+partial_p] \ | |
1047 | : (bitmap_cache[cache*4+2+partial_p] = \ | |
1048 | get_logical_fringe_bitmap (w, which, 1, partial_p))) | |
1049 | ||
1050 | ||
5a874e95 YM |
1051 | /* Extend top-aligned top indicator (or bottom-aligned bottom |
1052 | indicator) to adjacent rows if it doesn't fit in one row. */ | |
1053 | top_ind_min_y = bot_ind_max_y = -1; | |
1054 | if (top_ind_rn >= 0) | |
1055 | { | |
1056 | int bn = NO_FRINGE_BITMAP; | |
1057 | ||
1058 | row = w->desired_matrix->rows + top_ind_rn; | |
1059 | if (!row->enabled_p) | |
1060 | row = w->current_matrix->rows + top_ind_rn; | |
1061 | ||
1062 | top_row_ends_at_zv_p = row->ends_at_zv_p; | |
1063 | if (row->indicate_bob_p) | |
1064 | { | |
1065 | if (EQ (boundary_top, Qleft)) | |
1066 | bn = ((row->indicate_eob_p && EQ (boundary_bot, Qleft)) | |
1067 | ? LEFT_FRINGE (1, Qtop_bottom, row->ends_at_zv_p) | |
1068 | : LEFT_FRINGE (2, Qtop, 0)); | |
1069 | else | |
1070 | bn = ((row->indicate_eob_p && EQ (boundary_bot, Qright)) | |
1071 | ? RIGHT_FRINGE (1, Qtop_bottom, row->ends_at_zv_p) | |
1072 | : RIGHT_FRINGE (2, Qtop, 0)); | |
1073 | } | |
1074 | else if (row->indicate_top_line_p) | |
1075 | { | |
1076 | if (EQ (arrow_top, Qleft)) | |
1077 | bn = LEFT_FRINGE (6, Qup, 0); | |
1078 | else | |
1079 | bn = RIGHT_FRINGE (6, Qup, 0); | |
1080 | } | |
1081 | ||
1082 | if (bn != NO_FRINGE_BITMAP) | |
1083 | { | |
e61124cd | 1084 | struct fringe_bitmap *fb = get_fringe_bitmap_data (bn); |
5a874e95 | 1085 | |
5a874e95 YM |
1086 | if (fb->align == ALIGN_BITMAP_TOP && fb->period == 0) |
1087 | { | |
1088 | struct glyph_row *row1; | |
1089 | int top_ind_max_y; | |
1090 | ||
1091 | top_ind_min_y = WINDOW_HEADER_LINE_HEIGHT (w); | |
1092 | top_ind_max_y = top_ind_min_y + fb->height; | |
1093 | if (top_ind_max_y > yb) | |
1094 | top_ind_max_y = yb; | |
1095 | ||
1096 | for (y = row->y + row->height, rn = top_ind_rn + 1; | |
1097 | y < top_ind_max_y && rn < nrows; | |
1098 | y += row1->height, rn++) | |
1099 | { | |
1100 | if (bot_ind_rn >= 0 && rn >= bot_ind_rn) | |
1101 | break; | |
1102 | ||
1103 | row1 = w->desired_matrix->rows + rn; | |
1104 | if (!row1->enabled_p) | |
1105 | row1 = w->current_matrix->rows + rn; | |
1106 | ||
1107 | row1->indicate_bob_p = row->indicate_bob_p; | |
1108 | row1->indicate_top_line_p = row->indicate_top_line_p; | |
1109 | } | |
1110 | } | |
1111 | } | |
1112 | } | |
1113 | if (bot_ind_rn >= 0) | |
1114 | { | |
1115 | int bn = NO_FRINGE_BITMAP; | |
1116 | ||
1117 | row = w->desired_matrix->rows + bot_ind_rn; | |
1118 | if (!row->enabled_p) | |
1119 | row = w->current_matrix->rows + bot_ind_rn; | |
1120 | ||
1121 | bot_row_ends_at_zv_p = row->ends_at_zv_p; | |
1122 | if (row->indicate_eob_p) | |
1123 | { | |
1124 | if (EQ (boundary_bot, Qleft)) | |
1125 | bn = LEFT_FRINGE (3, Qbottom, row->ends_at_zv_p); | |
1126 | else | |
1127 | bn = RIGHT_FRINGE (3, Qbottom, row->ends_at_zv_p); | |
1128 | } | |
1129 | else if (row->indicate_bottom_line_p) | |
1130 | { | |
1131 | if (EQ (arrow_bot, Qleft)) | |
1132 | bn = LEFT_FRINGE (7, Qdown, 0); | |
1133 | else | |
1134 | bn = RIGHT_FRINGE (7, Qdown, 0); | |
1135 | } | |
1136 | ||
1137 | if (bn != NO_FRINGE_BITMAP) | |
1138 | { | |
e61124cd | 1139 | struct fringe_bitmap *fb = get_fringe_bitmap_data (bn); |
5a874e95 | 1140 | |
5a874e95 YM |
1141 | if (fb->align == ALIGN_BITMAP_BOTTOM && fb->period == 0) |
1142 | { | |
1143 | struct glyph_row *row1; | |
1144 | int bot_ind_min_y; | |
1145 | ||
1146 | bot_ind_max_y = row->y + row->visible_height; | |
1147 | bot_ind_min_y = bot_ind_max_y - fb->height; | |
1148 | if (bot_ind_min_y < WINDOW_HEADER_LINE_HEIGHT (w)) | |
1149 | bot_ind_min_y = WINDOW_HEADER_LINE_HEIGHT (w); | |
1150 | ||
1151 | for (y = row->y, rn = bot_ind_rn - 1; | |
1152 | y >= bot_ind_min_y && rn >= 0; | |
1153 | y -= row1->height, rn--) | |
1154 | { | |
1155 | if (top_ind_rn >= 0 && rn <= top_ind_rn) | |
1156 | break; | |
1157 | ||
1158 | row1 = w->desired_matrix->rows + rn; | |
1159 | if (!row1->enabled_p) | |
1160 | row1 = w->current_matrix->rows + rn; | |
1161 | ||
1162 | row1->indicate_eob_p = row->indicate_eob_p; | |
1163 | row1->indicate_bottom_line_p = row->indicate_bottom_line_p; | |
1164 | } | |
1165 | } | |
1166 | } | |
1167 | } | |
1168 | ||
1169 | for (y = w->vscroll, rn = 0; | |
6b61353c KH |
1170 | y < yb && rn < nrows; |
1171 | y += row->height, rn++) | |
1172 | { | |
7840b332 | 1173 | int left, right; |
6b61353c | 1174 | unsigned left_face_id, right_face_id; |
5a874e95 | 1175 | int left_offset, right_offset; |
d7e6881a | 1176 | bool periodic_p; |
6b61353c KH |
1177 | |
1178 | row = w->desired_matrix->rows + rn; | |
1179 | cur = w->current_matrix->rows + rn; | |
1180 | if (!row->enabled_p) | |
1181 | row = cur; | |
1182 | ||
1183 | left_face_id = right_face_id = DEFAULT_FACE_ID; | |
5a874e95 | 1184 | left_offset = right_offset = 0; |
e61124cd | 1185 | periodic_p = 0; |
6b61353c KH |
1186 | |
1187 | /* Decide which bitmap to draw in the left fringe. */ | |
1188 | if (WINDOW_LEFT_FRINGE_WIDTH (w) == 0) | |
1189 | left = NO_FRINGE_BITMAP; | |
1190 | else if (row->left_user_fringe_bitmap != NO_FRINGE_BITMAP) | |
1191 | { | |
1192 | left = row->left_user_fringe_bitmap; | |
1193 | left_face_id = row->left_user_fringe_face_id; | |
1194 | } | |
96d79611 EZ |
1195 | else if ((!row->reversed_p && row->truncated_on_left_p) |
1196 | || (row->reversed_p && row->truncated_on_right_p)) | |
5e617bc2 | 1197 | left = LEFT_FRINGE (0, Qtruncation, 0); |
5797a7a0 | 1198 | else if (row->indicate_bob_p && EQ (boundary_top, Qleft)) |
5a874e95 YM |
1199 | { |
1200 | left = ((row->indicate_eob_p && EQ (boundary_bot, Qleft)) | |
1201 | ? LEFT_FRINGE (1, Qtop_bottom, top_row_ends_at_zv_p) | |
1202 | : LEFT_FRINGE (2, Qtop, 0)); | |
1203 | if (top_ind_min_y >= 0) | |
1204 | left_offset = top_ind_min_y - row->y; | |
1205 | } | |
5797a7a0 | 1206 | else if (row->indicate_eob_p && EQ (boundary_bot, Qleft)) |
5a874e95 YM |
1207 | { |
1208 | left = LEFT_FRINGE (3, Qbottom, bot_row_ends_at_zv_p); | |
1209 | if (bot_ind_max_y >= 0) | |
1210 | left_offset = bot_ind_max_y - (row->y + row->visible_height); | |
1211 | } | |
c4affd2c EZ |
1212 | else if ((!row->reversed_p && MATRIX_ROW_CONTINUATION_LINE_P (row)) |
1213 | || (row->reversed_p && row->continued_p)) | |
7840b332 | 1214 | left = LEFT_FRINGE (4, Qcontinuation, 0); |
5797a7a0 | 1215 | else if (row->indicate_empty_line_p && EQ (empty_pos, Qleft)) |
7840b332 | 1216 | left = LEFT_FRINGE (5, Qempty_line, 0); |
5797a7a0 | 1217 | else if (row->indicate_top_line_p && EQ (arrow_top, Qleft)) |
5a874e95 YM |
1218 | { |
1219 | left = LEFT_FRINGE (6, Qup, 0); | |
1220 | if (top_ind_min_y >= 0) | |
1221 | left_offset = top_ind_min_y - row->y; | |
1222 | } | |
5797a7a0 | 1223 | else if (row->indicate_bottom_line_p && EQ (arrow_bot, Qleft)) |
5a874e95 YM |
1224 | { |
1225 | left = LEFT_FRINGE (7, Qdown, 0); | |
1226 | if (bot_ind_max_y >= 0) | |
1227 | left_offset = bot_ind_max_y - (row->y + row->visible_height); | |
1228 | } | |
6b61353c KH |
1229 | else |
1230 | left = NO_FRINGE_BITMAP; | |
1231 | ||
1232 | /* Decide which bitmap to draw in the right fringe. */ | |
1233 | if (WINDOW_RIGHT_FRINGE_WIDTH (w) == 0) | |
1234 | right = NO_FRINGE_BITMAP; | |
1235 | else if (row->right_user_fringe_bitmap != NO_FRINGE_BITMAP) | |
1236 | { | |
1237 | right = row->right_user_fringe_bitmap; | |
1238 | right_face_id = row->right_user_fringe_face_id; | |
1239 | } | |
96d79611 EZ |
1240 | else if ((!row->reversed_p && row->truncated_on_right_p) |
1241 | || (row->reversed_p && row->truncated_on_left_p)) | |
7840b332 | 1242 | right = RIGHT_FRINGE (0, Qtruncation, 0); |
5797a7a0 | 1243 | else if (row->indicate_bob_p && EQ (boundary_top, Qright)) |
5a874e95 YM |
1244 | { |
1245 | right = ((row->indicate_eob_p && EQ (boundary_bot, Qright)) | |
1246 | ? RIGHT_FRINGE (1, Qtop_bottom, top_row_ends_at_zv_p) | |
1247 | : RIGHT_FRINGE (2, Qtop, 0)); | |
1248 | if (top_ind_min_y >= 0) | |
1249 | right_offset = top_ind_min_y - row->y; | |
1250 | } | |
5797a7a0 | 1251 | else if (row->indicate_eob_p && EQ (boundary_bot, Qright)) |
5a874e95 YM |
1252 | { |
1253 | right = RIGHT_FRINGE (3, Qbottom, bot_row_ends_at_zv_p); | |
1254 | if (bot_ind_max_y >= 0) | |
1255 | right_offset = bot_ind_max_y - (row->y + row->visible_height); | |
1256 | } | |
c4affd2c EZ |
1257 | else if ((!row->reversed_p && row->continued_p) |
1258 | || (row->reversed_p && MATRIX_ROW_CONTINUATION_LINE_P (row))) | |
7840b332 | 1259 | right = RIGHT_FRINGE (4, Qcontinuation, 0); |
5797a7a0 | 1260 | else if (row->indicate_top_line_p && EQ (arrow_top, Qright)) |
5a874e95 YM |
1261 | { |
1262 | right = RIGHT_FRINGE (6, Qup, 0); | |
1263 | if (top_ind_min_y >= 0) | |
1264 | right_offset = top_ind_min_y - row->y; | |
1265 | } | |
5797a7a0 | 1266 | else if (row->indicate_bottom_line_p && EQ (arrow_bot, Qright)) |
5a874e95 YM |
1267 | { |
1268 | right = RIGHT_FRINGE (7, Qdown, 0); | |
1269 | if (bot_ind_max_y >= 0) | |
1270 | right_offset = bot_ind_max_y - (row->y + row->visible_height); | |
1271 | } | |
5797a7a0 | 1272 | else if (row->indicate_empty_line_p && EQ (empty_pos, Qright)) |
7840b332 | 1273 | right = RIGHT_FRINGE (5, Qempty_line, 0); |
6b61353c KH |
1274 | else |
1275 | right = NO_FRINGE_BITMAP; | |
1276 | ||
e61124cd YM |
1277 | periodic_p = (get_fringe_bitmap_data (left)->period != 0 |
1278 | || get_fringe_bitmap_data (right)->period != 0); | |
1279 | ||
4dadc129 | 1280 | if (row->y != cur->y |
6b61353c | 1281 | || row->visible_height != cur->visible_height |
81544a1d | 1282 | || row->ends_at_zv_p != cur->ends_at_zv_p |
6b61353c KH |
1283 | || left != cur->left_fringe_bitmap |
1284 | || right != cur->right_fringe_bitmap | |
1285 | || left_face_id != cur->left_fringe_face_id | |
1286 | || right_face_id != cur->right_fringe_face_id | |
5a874e95 YM |
1287 | || left_offset != cur->left_fringe_offset |
1288 | || right_offset != cur->right_fringe_offset | |
e61124cd | 1289 | || periodic_p != cur->fringe_bitmap_periodic_p |
6b61353c KH |
1290 | || cur->redraw_fringe_bitmaps_p) |
1291 | { | |
d7e6881a | 1292 | redraw_p = 1, row->redraw_fringe_bitmaps_p = 1; |
4dadc129 KS |
1293 | if (!keep_current_p) |
1294 | { | |
1295 | cur->redraw_fringe_bitmaps_p = 1; | |
1296 | cur->left_fringe_bitmap = left; | |
1297 | cur->right_fringe_bitmap = right; | |
1298 | cur->left_fringe_face_id = left_face_id; | |
1299 | cur->right_fringe_face_id = right_face_id; | |
5a874e95 YM |
1300 | cur->left_fringe_offset = left_offset; |
1301 | cur->right_fringe_offset = right_offset; | |
e61124cd | 1302 | cur->fringe_bitmap_periodic_p = periodic_p; |
4dadc129 | 1303 | } |
6b61353c KH |
1304 | } |
1305 | ||
7dfa5c49 KS |
1306 | if (row->overlay_arrow_bitmap < 0) |
1307 | row->overlay_arrow_bitmap = get_logical_fringe_bitmap (w, Qoverlay_arrow, 0, 0); | |
1308 | ||
a8b34fae | 1309 | if (row->overlay_arrow_bitmap != cur->overlay_arrow_bitmap) |
6b61353c | 1310 | { |
d7e6881a | 1311 | redraw_p = 1, row->redraw_fringe_bitmaps_p = 1; |
14eca62f YM |
1312 | if (!keep_current_p) |
1313 | { | |
1314 | cur->redraw_fringe_bitmaps_p = 1; | |
1315 | cur->overlay_arrow_bitmap = row->overlay_arrow_bitmap; | |
1316 | } | |
6b61353c KH |
1317 | } |
1318 | ||
1319 | row->left_fringe_bitmap = left; | |
1320 | row->right_fringe_bitmap = right; | |
1321 | row->left_fringe_face_id = left_face_id; | |
1322 | row->right_fringe_face_id = right_face_id; | |
5a874e95 YM |
1323 | row->left_fringe_offset = left_offset; |
1324 | row->right_fringe_offset = right_offset; | |
e61124cd | 1325 | row->fringe_bitmap_periodic_p = periodic_p; |
6b61353c KH |
1326 | } |
1327 | ||
4dadc129 | 1328 | return redraw_p && !keep_current_p; |
6b61353c KH |
1329 | } |
1330 | ||
1331 | ||
1332 | /* Compute actual fringe widths for frame F. | |
1333 | ||
1334 | If REDRAW is 1, redraw F if the fringe settings was actually | |
1335 | modified and F is visible. | |
1336 | ||
1337 | Since the combined left and right fringe must occupy an integral | |
1338 | number of columns, we may need to add some pixels to each fringe. | |
1339 | Typically, we add an equal amount (+/- 1 pixel) to each fringe, | |
1340 | but a negative width value is taken literally (after negating it). | |
1341 | ||
11491cbb | 1342 | We never make the fringes narrower than specified. |
6b61353c KH |
1343 | */ |
1344 | ||
1345 | void | |
d7e6881a | 1346 | compute_fringe_widths (struct frame *f, bool redraw_p) |
6b61353c KH |
1347 | { |
1348 | int o_left = FRAME_LEFT_FRINGE_WIDTH (f); | |
1349 | int o_right = FRAME_RIGHT_FRINGE_WIDTH (f); | |
1350 | int o_cols = FRAME_FRINGE_COLS (f); | |
1351 | ||
e69b0960 DA |
1352 | Lisp_Object left_fringe = Fassq (Qleft_fringe, f->param_alist); |
1353 | Lisp_Object right_fringe = Fassq (Qright_fringe, f->param_alist); | |
6b61353c KH |
1354 | int left_fringe_width, right_fringe_width; |
1355 | ||
1356 | if (!NILP (left_fringe)) | |
1357 | left_fringe = Fcdr (left_fringe); | |
1358 | if (!NILP (right_fringe)) | |
1359 | right_fringe = Fcdr (right_fringe); | |
1360 | ||
1361 | left_fringe_width = ((NILP (left_fringe) || !INTEGERP (left_fringe)) ? 8 : | |
1362 | XINT (left_fringe)); | |
1363 | right_fringe_width = ((NILP (right_fringe) || !INTEGERP (right_fringe)) ? 8 : | |
1364 | XINT (right_fringe)); | |
1365 | ||
1366 | if (left_fringe_width || right_fringe_width) | |
1367 | { | |
71376d4b PE |
1368 | int left_wid = eabs (left_fringe_width); |
1369 | int right_wid = eabs (right_fringe_width); | |
6b61353c KH |
1370 | int conf_wid = left_wid + right_wid; |
1371 | int font_wid = FRAME_COLUMN_WIDTH (f); | |
1372 | int cols = (left_wid + right_wid + font_wid-1) / font_wid; | |
1373 | int real_wid = cols * font_wid; | |
1374 | if (left_wid && right_wid) | |
1375 | { | |
1376 | if (left_fringe_width < 0) | |
1377 | { | |
1378 | /* Left fringe width is fixed, adjust right fringe if necessary */ | |
1379 | FRAME_LEFT_FRINGE_WIDTH (f) = left_wid; | |
1380 | FRAME_RIGHT_FRINGE_WIDTH (f) = real_wid - left_wid; | |
1381 | } | |
1382 | else if (right_fringe_width < 0) | |
1383 | { | |
1384 | /* Right fringe width is fixed, adjust left fringe if necessary */ | |
1385 | FRAME_LEFT_FRINGE_WIDTH (f) = real_wid - right_wid; | |
1386 | FRAME_RIGHT_FRINGE_WIDTH (f) = right_wid; | |
1387 | } | |
1388 | else | |
1389 | { | |
1390 | /* Adjust both fringes with an equal amount. | |
1391 | Note that we are doing integer arithmetic here, so don't | |
1392 | lose a pixel if the total width is an odd number. */ | |
1393 | int fill = real_wid - conf_wid; | |
1394 | FRAME_LEFT_FRINGE_WIDTH (f) = left_wid + fill/2; | |
1395 | FRAME_RIGHT_FRINGE_WIDTH (f) = right_wid + fill - fill/2; | |
1396 | } | |
1397 | } | |
1398 | else if (left_fringe_width) | |
1399 | { | |
1400 | FRAME_LEFT_FRINGE_WIDTH (f) = real_wid; | |
1401 | FRAME_RIGHT_FRINGE_WIDTH (f) = 0; | |
1402 | } | |
1403 | else | |
1404 | { | |
1405 | FRAME_LEFT_FRINGE_WIDTH (f) = 0; | |
1406 | FRAME_RIGHT_FRINGE_WIDTH (f) = real_wid; | |
1407 | } | |
1408 | FRAME_FRINGE_COLS (f) = cols; | |
1409 | } | |
1410 | else | |
1411 | { | |
1412 | FRAME_LEFT_FRINGE_WIDTH (f) = 0; | |
1413 | FRAME_RIGHT_FRINGE_WIDTH (f) = 0; | |
1414 | FRAME_FRINGE_COLS (f) = 0; | |
1415 | } | |
1416 | ||
d7e6881a | 1417 | if (redraw_p && FRAME_VISIBLE_P (f)) |
6b61353c KH |
1418 | if (o_left != FRAME_LEFT_FRINGE_WIDTH (f) || |
1419 | o_right != FRAME_RIGHT_FRINGE_WIDTH (f) || | |
1420 | o_cols != FRAME_FRINGE_COLS (f)) | |
1421 | redraw_frame (f); | |
1422 | } | |
1423 | ||
7a2a85be | 1424 | |
4cce0ab7 KS |
1425 | /* Free resources used by a user-defined bitmap. */ |
1426 | ||
bf60f616 | 1427 | static void |
971de7fb | 1428 | destroy_fringe_bitmap (int n) |
6b61353c | 1429 | { |
6b61353c KH |
1430 | struct fringe_bitmap **fbp; |
1431 | ||
49ce2dbd | 1432 | fringe_faces[n] = Qnil; |
6b61353c KH |
1433 | |
1434 | fbp = &fringe_bitmaps[n]; | |
1435 | if (*fbp && (*fbp)->dynamic) | |
1436 | { | |
e581a466 | 1437 | /* XXX Is SELECTED_FRAME OK here? */ |
04ccca97 | 1438 | struct redisplay_interface *rif = FRAME_RIF (SELECTED_FRAME ()); |
f2be4fd0 | 1439 | if (rif && rif->destroy_fringe_bitmap) |
6b61353c KH |
1440 | rif->destroy_fringe_bitmap (n); |
1441 | xfree (*fbp); | |
1442 | *fbp = NULL; | |
1443 | } | |
1444 | ||
1445 | while (max_used_fringe_bitmap > MAX_STANDARD_FRINGE_BITMAPS | |
1446 | && fringe_bitmaps[max_used_fringe_bitmap - 1] == NULL) | |
1447 | max_used_fringe_bitmap--; | |
7a2a85be KS |
1448 | } |
1449 | ||
6b61353c | 1450 | |
7a2a85be KS |
1451 | DEFUN ("destroy-fringe-bitmap", Fdestroy_fringe_bitmap, Sdestroy_fringe_bitmap, |
1452 | 1, 1, 0, | |
1453 | doc: /* Destroy fringe bitmap BITMAP. | |
1454 | If BITMAP overrides a standard fringe bitmap, the original bitmap is restored. */) | |
5842a27b | 1455 | (Lisp_Object bitmap) |
7a2a85be KS |
1456 | { |
1457 | int n; | |
7a2a85be | 1458 | |
4cce0ab7 KS |
1459 | CHECK_SYMBOL (bitmap); |
1460 | n = lookup_fringe_bitmap (bitmap); | |
1461 | if (!n) | |
7a2a85be KS |
1462 | return Qnil; |
1463 | ||
1464 | destroy_fringe_bitmap (n); | |
2d05deef | 1465 | |
4cce0ab7 | 1466 | if (n >= MAX_STANDARD_FRINGE_BITMAPS) |
7a2a85be | 1467 | { |
4cce0ab7 | 1468 | Vfringe_bitmaps = Fdelq (bitmap, Vfringe_bitmaps); |
7a2a85be | 1469 | /* It would be better to remove the fringe property. */ |
4cce0ab7 | 1470 | Fput (bitmap, Qfringe, Qnil); |
7a2a85be | 1471 | } |
4cce0ab7 | 1472 | |
6b61353c KH |
1473 | return Qnil; |
1474 | } | |
1475 | ||
1476 | ||
1477 | /* Initialize bitmap bit. | |
1478 | ||
1479 | On X, we bit-swap the built-in bitmaps and reduce bitmap | |
1480 | from short to char array if width is <= 8 bits. | |
1481 | ||
1482 | On MAC with big-endian CPU, we need to byte-swap each short. | |
1483 | ||
1484 | On W32 and MAC (little endian), there's no need to do this. | |
1485 | */ | |
1486 | ||
2e4e5023 | 1487 | #if defined (HAVE_X_WINDOWS) |
91433552 | 1488 | static const unsigned char swap_nibble[16] = { |
2e4e5023 GM |
1489 | 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */ |
1490 | 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */ | |
1491 | 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */ | |
1492 | 0x3, 0xb, 0x7, 0xf}; /* 0011 1011 0111 1111 */ | |
1493 | #endif /* HAVE_X_WINDOWS */ | |
1494 | ||
bf60f616 | 1495 | static void |
971de7fb | 1496 | init_fringe_bitmap (int which, struct fringe_bitmap *fb, int once_p) |
6b61353c KH |
1497 | { |
1498 | if (once_p || fb->dynamic) | |
1499 | { | |
1500 | #if defined (HAVE_X_WINDOWS) | |
6b61353c KH |
1501 | unsigned short *bits = fb->bits; |
1502 | int j; | |
1503 | ||
1504 | if (fb->width <= 8) | |
1505 | { | |
1506 | unsigned char *cbits = (unsigned char *)fb->bits; | |
1507 | for (j = 0; j < fb->height; j++) | |
1508 | { | |
1509 | unsigned short b = *bits++; | |
1510 | unsigned char c; | |
1511 | c = (unsigned char)((swap_nibble[b & 0xf] << 4) | |
1512 | | (swap_nibble[(b>>4) & 0xf])); | |
1513 | *cbits++ = (c >> (8 - fb->width)); | |
1514 | } | |
1515 | } | |
1516 | else | |
1517 | { | |
1518 | for (j = 0; j < fb->height; j++) | |
1519 | { | |
1520 | unsigned short b = *bits; | |
1521 | b = (unsigned short)((swap_nibble[b & 0xf] << 12) | |
1522 | | (swap_nibble[(b>>4) & 0xf] << 8) | |
1523 | | (swap_nibble[(b>>8) & 0xf] << 4) | |
1524 | | (swap_nibble[(b>>12) & 0xf])); | |
4e8231f3 | 1525 | b >>= (16 - fb->width); |
671d409f | 1526 | #ifdef WORDS_BIGENDIAN |
4eed3157 | 1527 | b = bswap_16 (b); |
4e8231f3 YM |
1528 | #endif |
1529 | *bits++ = b; | |
6b61353c KH |
1530 | } |
1531 | } | |
1532 | #endif /* HAVE_X_WINDOWS */ | |
1533 | ||
6b61353c KH |
1534 | } |
1535 | ||
1536 | if (!once_p) | |
1537 | { | |
e581a466 | 1538 | /* XXX Is SELECTED_FRAME OK here? */ |
04ccca97 | 1539 | struct redisplay_interface *rif = FRAME_RIF (SELECTED_FRAME ()); |
a284b538 | 1540 | |
7a2a85be | 1541 | destroy_fringe_bitmap (which); |
6b61353c | 1542 | |
f2be4fd0 | 1543 | if (rif && rif->define_fringe_bitmap) |
6b61353c KH |
1544 | rif->define_fringe_bitmap (which, fb->bits, fb->height, fb->width); |
1545 | ||
1546 | fringe_bitmaps[which] = fb; | |
1547 | if (which >= max_used_fringe_bitmap) | |
1548 | max_used_fringe_bitmap = which + 1; | |
1549 | } | |
1550 | } | |
1551 | ||
1552 | ||
1553 | DEFUN ("define-fringe-bitmap", Fdefine_fringe_bitmap, Sdefine_fringe_bitmap, | |
7a2a85be KS |
1554 | 2, 5, 0, |
1555 | doc: /* Define fringe bitmap BITMAP from BITS of size HEIGHT x WIDTH. | |
2faacff7 | 1556 | BITMAP is a symbol identifying the new fringe bitmap. |
6b61353c KH |
1557 | BITS is either a string or a vector of integers. |
1558 | HEIGHT is height of bitmap. If HEIGHT is nil, use length of BITS. | |
1559 | WIDTH must be an integer between 1 and 16, or nil which defaults to 8. | |
7a2a85be | 1560 | Optional fifth arg ALIGN may be one of `top', `center', or `bottom', |
6b61353c | 1561 | indicating the positioning of the bitmap relative to the rows where it |
6b72791f | 1562 | is used; the default is to center the bitmap. Fifth arg may also be a |
6b61353c KH |
1563 | list (ALIGN PERIODIC) where PERIODIC non-nil specifies that the bitmap |
1564 | should be repeated. | |
7a2a85be | 1565 | If BITMAP already exists, the existing definition is replaced. */) |
5842a27b | 1566 | (Lisp_Object bitmap, Lisp_Object bits, Lisp_Object height, Lisp_Object width, Lisp_Object align) |
6b61353c | 1567 | { |
6b61353c KH |
1568 | int n, h, i, j; |
1569 | unsigned short *b; | |
1570 | struct fringe_bitmap fb, *xfb; | |
1571 | int fill1 = 0, fill2 = 0; | |
7a2a85be | 1572 | |
4cce0ab7 | 1573 | CHECK_SYMBOL (bitmap); |
6b61353c | 1574 | |
11e04b2d KS |
1575 | if (STRINGP (bits)) |
1576 | h = SCHARS (bits); | |
1577 | else if (VECTORP (bits)) | |
77b37c05 | 1578 | h = ASIZE (bits); |
11e04b2d | 1579 | else |
7fee0b51 | 1580 | wrong_type_argument (Qsequencep, bits); |
6b61353c KH |
1581 | |
1582 | if (NILP (height)) | |
11e04b2d | 1583 | fb.height = h; |
6b61353c KH |
1584 | else |
1585 | { | |
1586 | CHECK_NUMBER (height); | |
d311d28c | 1587 | fb.height = max (0, min (XINT (height), 255)); |
11e04b2d | 1588 | if (fb.height > h) |
6b61353c | 1589 | { |
6b61353c KH |
1590 | fill1 = (fb.height - h) / 2; |
1591 | fill2 = fb.height - h - fill1; | |
1592 | } | |
1593 | } | |
1594 | ||
1595 | if (NILP (width)) | |
1596 | fb.width = 8; | |
1597 | else | |
1598 | { | |
1599 | CHECK_NUMBER (width); | |
d311d28c | 1600 | fb.width = max (0, min (XINT (width), 255)); |
6b61353c KH |
1601 | } |
1602 | ||
1603 | fb.period = 0; | |
1604 | fb.align = ALIGN_BITMAP_CENTER; | |
1605 | ||
1606 | if (CONSP (align)) | |
1607 | { | |
1608 | Lisp_Object period = XCDR (align); | |
1609 | if (CONSP (period)) | |
1610 | { | |
1611 | period = XCAR (period); | |
1612 | if (!NILP (period)) | |
1613 | { | |
1614 | fb.period = fb.height; | |
1615 | fb.height = 255; | |
1616 | } | |
1617 | } | |
1618 | align = XCAR (align); | |
1619 | } | |
1620 | if (EQ (align, Qtop)) | |
1621 | fb.align = ALIGN_BITMAP_TOP; | |
1622 | else if (EQ (align, Qbottom)) | |
1623 | fb.align = ALIGN_BITMAP_BOTTOM; | |
1624 | else if (!NILP (align) && !EQ (align, Qcenter)) | |
1625 | error ("Bad align argument"); | |
1626 | ||
ad67849e | 1627 | n = lookup_fringe_bitmap (bitmap); |
4cce0ab7 | 1628 | if (!n) |
6b61353c | 1629 | { |
ad67849e | 1630 | if (max_used_fringe_bitmap < max_fringe_bitmaps) |
6b61353c KH |
1631 | n = max_used_fringe_bitmap++; |
1632 | else | |
1633 | { | |
1634 | for (n = MAX_STANDARD_FRINGE_BITMAPS; | |
ad67849e | 1635 | n < max_fringe_bitmaps; |
6b61353c KH |
1636 | n++) |
1637 | if (fringe_bitmaps[n] == NULL) | |
1638 | break; | |
ad67849e KS |
1639 | |
1640 | if (n == max_fringe_bitmaps) | |
1641 | { | |
483a9e21 PE |
1642 | int bitmaps = max_fringe_bitmaps + 20; |
1643 | if (MAX_FRINGE_BITMAPS < bitmaps) | |
ad67849e KS |
1644 | error ("No free fringe bitmap slots"); |
1645 | ||
1646 | i = max_fringe_bitmaps; | |
38182d90 PE |
1647 | fringe_bitmaps = xrealloc (fringe_bitmaps, |
1648 | bitmaps * sizeof *fringe_bitmaps); | |
1649 | fringe_faces = xrealloc (fringe_faces, | |
1650 | bitmaps * sizeof *fringe_faces); | |
ad67849e | 1651 | |
483a9e21 | 1652 | for (i = max_fringe_bitmaps; i < bitmaps; i++) |
ad67849e KS |
1653 | { |
1654 | fringe_bitmaps[i] = NULL; | |
49ce2dbd | 1655 | fringe_faces[i] = Qnil; |
ad67849e | 1656 | } |
483a9e21 PE |
1657 | |
1658 | max_fringe_bitmaps = bitmaps; | |
ad67849e | 1659 | } |
6b61353c | 1660 | } |
7a2a85be | 1661 | |
4cce0ab7 KS |
1662 | Vfringe_bitmaps = Fcons (bitmap, Vfringe_bitmaps); |
1663 | Fput (bitmap, Qfringe, make_number (n)); | |
6b61353c KH |
1664 | } |
1665 | ||
96c06863 | 1666 | fb.dynamic = true; |
6b61353c | 1667 | |
23f86fce | 1668 | xfb = xmalloc (sizeof fb + fb.height * BYTES_PER_BITMAP_ROW); |
6b61353c | 1669 | fb.bits = b = (unsigned short *) (xfb + 1); |
72af86bd | 1670 | memset (b, 0, fb.height); |
6b61353c KH |
1671 | |
1672 | j = 0; | |
1673 | while (j < fb.height) | |
1674 | { | |
1675 | for (i = 0; i < fill1 && j < fb.height; i++) | |
1676 | b[j++] = 0; | |
1677 | for (i = 0; i < h && j < fb.height; i++) | |
1678 | { | |
1679 | Lisp_Object elt = Faref (bits, make_number (i)); | |
1680 | b[j++] = NUMBERP (elt) ? XINT (elt) : 0; | |
1681 | } | |
1682 | for (i = 0; i < fill2 && j < fb.height; i++) | |
1683 | b[j++] = 0; | |
1684 | } | |
1685 | ||
1686 | *xfb = fb; | |
1687 | ||
1688 | init_fringe_bitmap (n, xfb, 0); | |
1689 | ||
4cce0ab7 | 1690 | return bitmap; |
6b61353c KH |
1691 | } |
1692 | ||
1693 | DEFUN ("set-fringe-bitmap-face", Fset_fringe_bitmap_face, Sset_fringe_bitmap_face, | |
1694 | 1, 2, 0, | |
7a2a85be | 1695 | doc: /* Set face for fringe bitmap BITMAP to FACE. |
2a03e2bc XF |
1696 | FACE is merged with the `fringe' face, so normally FACE should specify |
1697 | only the foreground color. | |
6b61353c | 1698 | If FACE is nil, reset face to default fringe face. */) |
5842a27b | 1699 | (Lisp_Object bitmap, Lisp_Object face) |
6b61353c | 1700 | { |
4cce0ab7 | 1701 | int n; |
6b61353c | 1702 | |
4cce0ab7 KS |
1703 | CHECK_SYMBOL (bitmap); |
1704 | n = lookup_fringe_bitmap (bitmap); | |
1705 | if (!n) | |
7a2a85be | 1706 | error ("Undefined fringe bitmap"); |
6b61353c | 1707 | |
44286096 CY |
1708 | /* The purpose of the following code is to signal an error if FACE |
1709 | is not a face. This is for the caller's convenience only; the | |
1710 | redisplay code should be able to fail gracefully. Skip the check | |
1711 | if FRINGE_FACE_ID is unrealized (as in batch mode and during | |
1712 | daemon startup). */ | |
6b61353c KH |
1713 | if (!NILP (face)) |
1714 | { | |
44286096 CY |
1715 | struct frame *f = SELECTED_FRAME (); |
1716 | ||
1717 | if (FACE_FROM_ID (f, FRINGE_FACE_ID) | |
1718 | && lookup_derived_face (f, face, FRINGE_FACE_ID, 1) < 0) | |
6b61353c KH |
1719 | error ("No such face"); |
1720 | } | |
6b61353c | 1721 | |
49ce2dbd | 1722 | fringe_faces[n] = face; |
6b61353c KH |
1723 | return Qnil; |
1724 | } | |
1725 | ||
1726 | DEFUN ("fringe-bitmaps-at-pos", Ffringe_bitmaps_at_pos, Sfringe_bitmaps_at_pos, | |
1727 | 0, 2, 0, | |
1728 | doc: /* Return fringe bitmaps of row containing position POS in window WINDOW. | |
1729 | If WINDOW is nil, use selected window. If POS is nil, use value of point | |
d3848fe9 KS |
1730 | in that window. Return value is a list (LEFT RIGHT OV), where LEFT |
1731 | is the symbol for the bitmap in the left fringe (or nil if no bitmap), | |
1732 | RIGHT is similar for the right fringe, and OV is non-nil if there is an | |
1733 | overlay arrow in the left fringe. | |
5797a7a0 | 1734 | Return nil if POS is not visible in WINDOW. */) |
5842a27b | 1735 | (Lisp_Object pos, Lisp_Object window) |
6b61353c KH |
1736 | { |
1737 | struct window *w; | |
6b61353c | 1738 | struct glyph_row *row; |
d311d28c | 1739 | ptrdiff_t textpos; |
6b61353c | 1740 | |
b9e9df47 DA |
1741 | w = decode_any_window (window); |
1742 | XSETWINDOW (window, w); | |
6b61353c KH |
1743 | |
1744 | if (!NILP (pos)) | |
1745 | { | |
1746 | CHECK_NUMBER_COERCE_MARKER (pos); | |
d311d28c PE |
1747 | if (! (BEGV <= XINT (pos) && XINT (pos) <= ZV)) |
1748 | args_out_of_range (window, pos); | |
6b61353c KH |
1749 | textpos = XINT (pos); |
1750 | } | |
1751 | else if (w == XWINDOW (selected_window)) | |
1752 | textpos = PT; | |
1753 | else | |
4c1acb95 | 1754 | textpos = marker_position (w->pointm); |
6b61353c KH |
1755 | |
1756 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
1757 | row = row_containing_pos (w, textpos, row, NULL, 0); | |
1758 | if (row) | |
d3848fe9 KS |
1759 | return list3 (get_fringe_bitmap_name (row->left_fringe_bitmap), |
1760 | get_fringe_bitmap_name (row->right_fringe_bitmap), | |
a8b34fae KS |
1761 | (row->overlay_arrow_bitmap == 0 ? Qnil |
1762 | : row->overlay_arrow_bitmap < 0 ? Qt | |
1763 | : get_fringe_bitmap_name (row->overlay_arrow_bitmap))); | |
6b61353c KH |
1764 | else |
1765 | return Qnil; | |
1766 | } | |
1767 | ||
1768 | ||
1769 | /*********************************************************************** | |
1770 | Initialization | |
1771 | ***********************************************************************/ | |
1772 | ||
1773 | void | |
971de7fb | 1774 | syms_of_fringe (void) |
6b61353c | 1775 | { |
fe6aa7a1 BT |
1776 | #include "fringe.x" |
1777 | ||
cd3520a4 JB |
1778 | DEFSYM (Qtruncation, "truncation"); |
1779 | DEFSYM (Qcontinuation, "continuation"); | |
1780 | DEFSYM (Qoverlay_arrow, "overlay-arrow"); | |
1781 | DEFSYM (Qempty_line, "empty-line"); | |
1782 | DEFSYM (Qtop_bottom, "top-bottom"); | |
1783 | DEFSYM (Qhollow_small, "hollow-small"); | |
7840b332 | 1784 | |
29208e82 | 1785 | DEFVAR_LISP ("overflow-newline-into-fringe", Voverflow_newline_into_fringe, |
fb7ada5f | 1786 | doc: /* Non-nil means that newline may flow into the right fringe. |
6b61353c KH |
1787 | This means that display lines which are exactly as wide as the window |
1788 | (not counting the final newline) will only occupy one screen line, by | |
1789 | showing (or hiding) the final newline in the right fringe; when point | |
1790 | is at the final newline, the cursor is shown in the right fringe. | |
1791 | If nil, also continue lines which are exactly as wide as the window. */); | |
1792 | Voverflow_newline_into_fringe = Qt; | |
1793 | ||
29208e82 | 1794 | DEFVAR_LISP ("fringe-bitmaps", Vfringe_bitmaps, |
a4b7b036 | 1795 | doc: /* List of fringe bitmap symbols. */); |
7a2a85be | 1796 | Vfringe_bitmaps = Qnil; |
6b61353c KH |
1797 | } |
1798 | ||
1799 | /* Initialize this module when Emacs starts. */ | |
1800 | ||
1801 | void | |
971de7fb | 1802 | init_fringe_once (void) |
6b61353c | 1803 | { |
7840b332 | 1804 | int bt; |
6b61353c KH |
1805 | |
1806 | for (bt = NO_FRINGE_BITMAP + 1; bt < MAX_STANDARD_FRINGE_BITMAPS; bt++) | |
5e617bc2 | 1807 | init_fringe_bitmap (bt, &standard_bitmaps[bt], 1); |
6b61353c KH |
1808 | } |
1809 | ||
1810 | void | |
971de7fb | 1811 | init_fringe (void) |
6b61353c KH |
1812 | { |
1813 | int i; | |
1814 | ||
ad67849e KS |
1815 | max_fringe_bitmaps = MAX_STANDARD_FRINGE_BITMAPS + 20; |
1816 | ||
38182d90 PE |
1817 | fringe_bitmaps = xzalloc (max_fringe_bitmaps * sizeof *fringe_bitmaps); |
1818 | fringe_faces = xmalloc (max_fringe_bitmaps * sizeof *fringe_faces); | |
ad67849e KS |
1819 | |
1820 | for (i = 0; i < max_fringe_bitmaps; i++) | |
23f86fce | 1821 | fringe_faces[i] = Qnil; |
6b61353c KH |
1822 | } |
1823 | ||
9e2a2647 | 1824 | #ifdef HAVE_NTGUI |
6b61353c KH |
1825 | |
1826 | void | |
9e2a2647 | 1827 | w32_init_fringe (struct redisplay_interface *rif) |
6b61353c | 1828 | { |
7840b332 | 1829 | int bt; |
6b61353c | 1830 | |
f2be4fd0 KS |
1831 | if (!rif) |
1832 | return; | |
1833 | ||
6b61353c KH |
1834 | for (bt = NO_FRINGE_BITMAP + 1; bt < MAX_STANDARD_FRINGE_BITMAPS; bt++) |
1835 | { | |
1836 | struct fringe_bitmap *fb = &standard_bitmaps[bt]; | |
1837 | rif->define_fringe_bitmap (bt, fb->bits, fb->height, fb->width); | |
1838 | } | |
1839 | } | |
1840 | ||
1841 | void | |
7c3320d8 | 1842 | w32_reset_fringes (void) |
6b61353c KH |
1843 | { |
1844 | /* Destroy row bitmaps. */ | |
1845 | int bt; | |
5c217767 | 1846 | struct redisplay_interface *rif = FRAME_RIF (SELECTED_FRAME ()); |
6b61353c | 1847 | |
f2be4fd0 KS |
1848 | if (!rif) |
1849 | return; | |
1850 | ||
6b61353c KH |
1851 | for (bt = NO_FRINGE_BITMAP + 1; bt < max_used_fringe_bitmap; bt++) |
1852 | rif->destroy_fringe_bitmap (bt); | |
1853 | } | |
1854 | ||
1855 | #endif /* HAVE_NTGUI */ |