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2d05deef KS |
1 | /* Fringe handling (split from xdisp.c). |
2 | Copyright (C) 1985,86,87,88,93,94,95,97,98,99,2000,01,02,03,04 | |
3 | Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | #include <config.h> | |
23 | #include <stdio.h> | |
24 | ||
25 | #include "lisp.h" | |
26 | #include "frame.h" | |
27 | #include "window.h" | |
28 | #include "dispextern.h" | |
29 | #include "buffer.h" | |
30 | #include "blockinput.h" | |
31 | ||
32 | #ifdef HAVE_WINDOW_SYSTEM | |
33 | ||
34 | extern Lisp_Object Qtop, Qbottom, Qcenter; | |
35 | ||
36 | /* Non-nil means that newline may flow into the right fringe. */ | |
37 | ||
38 | Lisp_Object Voverflow_newline_into_fringe; | |
39 | ||
40 | ||
41 | enum fringe_bitmap_type | |
42 | { | |
43 | NO_FRINGE_BITMAP = 0, | |
44 | UNDEF_FRINGE_BITMAP, | |
45 | LEFT_TRUNCATION_BITMAP, | |
46 | RIGHT_TRUNCATION_BITMAP, | |
47 | UP_ARROW_BITMAP, | |
48 | DOWN_ARROW_BITMAP, | |
49 | CONTINUED_LINE_BITMAP, | |
50 | CONTINUATION_LINE_BITMAP, | |
51 | OVERLAY_ARROW_BITMAP, | |
52 | TOP_LEFT_ANGLE_BITMAP, | |
53 | TOP_RIGHT_ANGLE_BITMAP, | |
54 | BOTTOM_LEFT_ANGLE_BITMAP, | |
55 | BOTTOM_RIGHT_ANGLE_BITMAP, | |
56 | LEFT_BRACKET_BITMAP, | |
57 | RIGHT_BRACKET_BITMAP, | |
58 | FILLED_BOX_CURSOR_BITMAP, | |
59 | HOLLOW_BOX_CURSOR_BITMAP, | |
60 | HOLLOW_SQUARE_BITMAP, | |
61 | BAR_CURSOR_BITMAP, | |
62 | HBAR_CURSOR_BITMAP, | |
63 | ZV_LINE_BITMAP, | |
64 | MAX_STANDARD_FRINGE_BITMAPS | |
65 | }; | |
66 | ||
67 | enum fringe_bitmap_align | |
68 | { | |
69 | ALIGN_BITMAP_CENTER = 0, | |
70 | ALIGN_BITMAP_TOP, | |
71 | ALIGN_BITMAP_BOTTOM | |
72 | }; | |
73 | ||
74 | struct fringe_bitmap | |
75 | { | |
0881a0fd | 76 | unsigned short *bits; |
2d05deef KS |
77 | unsigned height : 8; |
78 | unsigned width : 8; | |
79 | unsigned period : 8; | |
80 | unsigned align : 2; | |
81 | unsigned dynamic : 1; | |
82 | }; | |
83 | ||
84 | \f | |
85 | /*********************************************************************** | |
86 | Fringe bitmaps | |
87 | ***********************************************************************/ | |
88 | ||
89 | /* Undefined bitmap. A question mark. */ | |
90 | /* | |
91 | ..xxxx.. | |
92 | .xxxxxx. | |
93 | xx....xx | |
94 | xx....xx | |
95 | ....xx.. | |
96 | ...xx... | |
97 | ...xx... | |
98 | ........ | |
99 | ...xx... | |
100 | ...xx... | |
101 | */ | |
0881a0fd | 102 | static unsigned short unknown_bits[] = { |
2d05deef KS |
103 | 0x3c, 0x7e, 0x7e, 0x0c, 0x18, 0x18, 0x00, 0x18, 0x18}; |
104 | ||
105 | /* An arrow like this: `<-'. */ | |
106 | /* | |
107 | ...xx... | |
108 | ..xx.... | |
109 | .xx..... | |
110 | xxxxxx.. | |
111 | xxxxxx.. | |
112 | .xx..... | |
113 | ..xx.... | |
114 | ...xx... | |
115 | */ | |
0881a0fd | 116 | static unsigned short left_arrow_bits[] = { |
2d05deef KS |
117 | 0x18, 0x30, 0x60, 0xfc, 0xfc, 0x60, 0x30, 0x18}; |
118 | ||
119 | ||
120 | /* Right truncation arrow bitmap `->'. */ | |
121 | /* | |
122 | ...xx... | |
123 | ....xx.. | |
124 | .....xx. | |
125 | ..xxxxxx | |
126 | ..xxxxxx | |
127 | .....xx. | |
128 | ....xx.. | |
129 | ...xx... | |
130 | */ | |
0881a0fd | 131 | static unsigned short right_arrow_bits[] = { |
2d05deef KS |
132 | 0x18, 0x0c, 0x06, 0x3f, 0x3f, 0x06, 0x0c, 0x18}; |
133 | ||
134 | ||
135 | /* Up arrow bitmap. */ | |
136 | /* | |
137 | ...xx... | |
138 | ..xxxx.. | |
139 | .xxxxxx. | |
140 | xxxxxxxx | |
141 | ...xx... | |
142 | ...xx... | |
143 | ...xx... | |
144 | ...xx... | |
145 | */ | |
0881a0fd | 146 | static unsigned short up_arrow_bits[] = { |
2d05deef KS |
147 | 0x18, 0x3c, 0x7e, 0xff, 0x18, 0x18, 0x18, 0x18}; |
148 | ||
149 | ||
150 | /* Down arrow bitmap. */ | |
151 | /* | |
152 | ...xx... | |
153 | ...xx... | |
154 | ...xx... | |
155 | ...xx... | |
156 | xxxxxxxx | |
157 | .xxxxxx. | |
158 | ..xxxx.. | |
159 | ...xx... | |
160 | */ | |
0881a0fd | 161 | static unsigned short down_arrow_bits[] = { |
2d05deef KS |
162 | 0x18, 0x18, 0x18, 0x18, 0xff, 0x7e, 0x3c, 0x18}; |
163 | ||
164 | /* Marker for continued lines. */ | |
165 | /* | |
166 | ..xxxx.. | |
167 | ..xxxxx. | |
168 | ......xx | |
169 | ..x..xxx | |
170 | ..xxxxxx | |
171 | ..xxxxx. | |
172 | ..xxxx.. | |
173 | ..xxxxx. | |
174 | */ | |
0881a0fd | 175 | static unsigned short continued_bits[] = { |
2d05deef KS |
176 | 0x3c, 0x3e, 0x03, 0x27, 0x3f, 0x3e, 0x3c, 0x3e}; |
177 | ||
178 | /* Marker for continuation lines. */ | |
179 | /* | |
180 | ..xxxx.. | |
181 | .xxxxx.. | |
182 | xx...... | |
183 | xxx..x.. | |
184 | xxxxxx.. | |
185 | .xxxxx.. | |
186 | ..xxxx.. | |
187 | .xxxxx.. | |
188 | */ | |
0881a0fd | 189 | static unsigned short continuation_bits[] = { |
2d05deef KS |
190 | 0x3c, 0x7c, 0xc0, 0xe4, 0xfc, 0x7c, 0x3c, 0x7c}; |
191 | ||
192 | /* Overlay arrow bitmap. A triangular arrow. */ | |
193 | /* | |
194 | xx...... | |
195 | xxxx.... | |
196 | xxxxx... | |
197 | xxxxxx.. | |
198 | xxxxxx.. | |
199 | xxxxx... | |
200 | xxxx.... | |
201 | xx...... | |
202 | */ | |
0881a0fd | 203 | static unsigned short ov_bits[] = { |
2d05deef KS |
204 | 0xc0, 0xf0, 0xf8, 0xfc, 0xfc, 0xf8, 0xf0, 0xc0}; |
205 | ||
206 | #if 0 | |
207 | /* Reverse Overlay arrow bitmap. A triangular arrow. */ | |
208 | /* | |
209 | ......xx | |
210 | ....xxxx | |
211 | ...xxxxx | |
212 | ..xxxxxx | |
213 | ..xxxxxx | |
214 | ...xxxxx | |
215 | ....xxxx | |
216 | ......xx | |
217 | */ | |
0881a0fd | 218 | static unsigned short rev_ov_bits[] = { |
2d05deef KS |
219 | 0x03, 0x0f, 0x1f, 0x3f, 0x3f, 0x1f, 0x0f, 0x03}; |
220 | #endif | |
221 | ||
222 | /* First line bitmap. An top-left angle. */ | |
223 | /* | |
224 | xxxxxx.. | |
225 | xxxxxx.. | |
226 | xx...... | |
227 | xx...... | |
228 | xx...... | |
229 | xx...... | |
230 | xx...... | |
231 | ........ | |
232 | */ | |
0881a0fd | 233 | static unsigned short top_left_angle_bits[] = { |
2d05deef KS |
234 | 0xfc, 0xfc, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0x00}; |
235 | ||
236 | /* First line bitmap. An right-up angle. */ | |
237 | /* | |
238 | ..xxxxxx | |
239 | ..xxxxxx | |
240 | ......xx | |
241 | ......xx | |
242 | ......xx | |
243 | ......xx | |
244 | ......xx | |
245 | ........ | |
246 | */ | |
0881a0fd | 247 | static unsigned short top_right_angle_bits[] = { |
2d05deef KS |
248 | 0x3f, 0x3f, 0x03, 0x03, 0x03, 0x03, 0x03, 0x00}; |
249 | ||
250 | /* Last line bitmap. An left-down angle. */ | |
251 | /* | |
252 | ........ | |
253 | xx...... | |
254 | xx...... | |
255 | xx...... | |
256 | xx...... | |
257 | xx...... | |
258 | xxxxxx.. | |
259 | xxxxxx.. | |
260 | */ | |
0881a0fd | 261 | static unsigned short bottom_left_angle_bits[] = { |
2d05deef KS |
262 | 0x00, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xfc, 0xfc}; |
263 | ||
264 | /* Last line bitmap. An right-down angle. */ | |
265 | /* | |
266 | ........ | |
267 | ......xx | |
268 | ......xx | |
269 | ......xx | |
270 | ......xx | |
271 | ......xx | |
272 | ..xxxxxx | |
273 | ..xxxxxx | |
274 | */ | |
0881a0fd | 275 | static unsigned short bottom_right_angle_bits[] = { |
2d05deef KS |
276 | 0x00, 0x03, 0x03, 0x03, 0x03, 0x03, 0x3f, 0x3f}; |
277 | ||
278 | /* First/last line bitmap. An left bracket. */ | |
279 | /* | |
280 | xxxxxx.. | |
281 | xxxxxx.. | |
282 | xx...... | |
283 | xx...... | |
284 | xx...... | |
285 | xx...... | |
286 | xx...... | |
287 | xx...... | |
288 | xxxxxx.. | |
289 | xxxxxx.. | |
290 | */ | |
0881a0fd | 291 | static unsigned short left_bracket_bits[] = { |
2d05deef KS |
292 | 0xfc, 0xfc, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xfc, 0xfc}; |
293 | ||
294 | /* First/last line bitmap. An right bracket. */ | |
295 | /* | |
296 | ..xxxxxx | |
297 | ..xxxxxx | |
298 | ......xx | |
299 | ......xx | |
300 | ......xx | |
301 | ......xx | |
302 | ......xx | |
303 | ......xx | |
304 | ..xxxxxx | |
305 | ..xxxxxx | |
306 | */ | |
0881a0fd | 307 | static unsigned short right_bracket_bits[] = { |
2d05deef KS |
308 | 0x3f, 0x3f, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x3f, 0x3f}; |
309 | ||
310 | /* Filled box cursor bitmap. A filled box; max 13 pixels high. */ | |
311 | /* | |
312 | xxxxxxx. | |
313 | xxxxxxx. | |
314 | xxxxxxx. | |
315 | xxxxxxx. | |
316 | xxxxxxx. | |
317 | xxxxxxx. | |
318 | xxxxxxx. | |
319 | xxxxxxx. | |
320 | xxxxxxx. | |
321 | xxxxxxx. | |
322 | xxxxxxx. | |
323 | xxxxxxx. | |
324 | xxxxxxx. | |
325 | */ | |
0881a0fd | 326 | static unsigned short filled_box_cursor_bits[] = { |
2d05deef KS |
327 | 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe}; |
328 | ||
329 | /* Hollow box cursor bitmap. A hollow box; max 13 pixels high. */ | |
330 | /* | |
331 | xxxxxxx. | |
332 | x.....x. | |
333 | x.....x. | |
334 | x.....x. | |
335 | x.....x. | |
336 | x.....x. | |
337 | x.....x. | |
338 | x.....x. | |
339 | x.....x. | |
340 | x.....x. | |
341 | x.....x. | |
342 | x.....x. | |
343 | xxxxxxx. | |
344 | */ | |
0881a0fd | 345 | static unsigned short hollow_box_cursor_bits[] = { |
2d05deef KS |
346 | 0xfe, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0xfe}; |
347 | ||
348 | /* Bar cursor bitmap. A vertical bar; max 13 pixels high. */ | |
349 | /* | |
350 | xx...... | |
351 | xx...... | |
352 | xx...... | |
353 | xx...... | |
354 | xx...... | |
355 | xx...... | |
356 | xx...... | |
357 | xx...... | |
358 | xx...... | |
359 | xx...... | |
360 | xx...... | |
361 | xx...... | |
362 | xx...... | |
363 | */ | |
0881a0fd | 364 | static unsigned short bar_cursor_bits[] = { |
2d05deef KS |
365 | 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0}; |
366 | ||
367 | /* HBar cursor bitmap. A horisontal bar; 2 pixels high. */ | |
368 | /* | |
369 | xxxxxxx. | |
370 | xxxxxxx. | |
371 | */ | |
0881a0fd | 372 | static unsigned short hbar_cursor_bits[] = { |
2d05deef KS |
373 | 0xfe, 0xfe}; |
374 | ||
375 | ||
376 | /* Bitmap drawn to indicate lines not displaying text if | |
377 | `indicate-empty-lines' is non-nil. */ | |
378 | /* | |
379 | ........ | |
380 | ..xxxx.. | |
381 | ........ | |
382 | ........ | |
383 | ..xxxx.. | |
384 | ........ | |
385 | */ | |
0881a0fd | 386 | static unsigned short zv_bits[] = { |
2d05deef KS |
387 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, |
388 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
389 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
390 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
391 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
392 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
393 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, | |
394 | 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x3c, 0x00}; | |
395 | ||
396 | /* Hollow square bitmap. */ | |
397 | /* | |
398 | .xxxxxx. | |
399 | .x....x. | |
400 | .x....x. | |
401 | .x....x. | |
402 | .x....x. | |
403 | .xxxxxx. | |
404 | */ | |
0881a0fd | 405 | static unsigned short hollow_square_bits[] = { |
2d05deef KS |
406 | 0x7e, 0x42, 0x42, 0x42, 0x42, 0x7e}; |
407 | ||
408 | ||
0881a0fd KS |
409 | #define BYTES_PER_BITMAP_ROW (sizeof (unsigned short)) |
410 | #define STANDARD_BITMAP_HEIGHT(bits) (sizeof (bits)/BYTES_PER_BITMAP_ROW) | |
411 | #define FRBITS(bits) bits, STANDARD_BITMAP_HEIGHT (bits) | |
2d05deef | 412 | |
2d05deef KS |
413 | struct fringe_bitmap standard_bitmaps[MAX_STANDARD_FRINGE_BITMAPS] = |
414 | { | |
415 | { NULL, 0, 0, 0, 0, 0 }, /* NO_FRINGE_BITMAP */ | |
416 | { FRBITS (unknown_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
417 | { FRBITS (left_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
418 | { FRBITS (right_arrow_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
419 | { FRBITS (up_arrow_bits), 8, 0, ALIGN_BITMAP_TOP, 0 }, | |
420 | { FRBITS (down_arrow_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, | |
421 | { FRBITS (continued_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
422 | { FRBITS (continuation_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
423 | { FRBITS (ov_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
424 | { FRBITS (top_left_angle_bits), 8, 0, ALIGN_BITMAP_TOP, 0 }, | |
425 | { FRBITS (top_right_angle_bits), 8, 0, ALIGN_BITMAP_TOP, 0 }, | |
426 | { FRBITS (bottom_left_angle_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, | |
427 | { FRBITS (bottom_right_angle_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, | |
428 | { FRBITS (left_bracket_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
429 | { FRBITS (right_bracket_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
430 | { FRBITS (filled_box_cursor_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
431 | { FRBITS (hollow_box_cursor_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
432 | { FRBITS (hollow_square_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
433 | { FRBITS (bar_cursor_bits), 8, 0, ALIGN_BITMAP_CENTER, 0 }, | |
434 | { FRBITS (hbar_cursor_bits), 8, 0, ALIGN_BITMAP_BOTTOM, 0 }, | |
435 | { FRBITS (zv_bits), 8, 3, ALIGN_BITMAP_TOP, 0 }, | |
436 | }; | |
437 | ||
438 | static struct fringe_bitmap *fringe_bitmaps[MAX_FRINGE_BITMAPS]; | |
439 | static unsigned fringe_faces[MAX_FRINGE_BITMAPS]; | |
440 | ||
441 | static int max_used_fringe_bitmap = MAX_STANDARD_FRINGE_BITMAPS; | |
442 | ||
443 | /* Return 1 if FRINGE_ID is a valid fringe bitmap id. */ | |
444 | ||
445 | int | |
446 | valid_fringe_bitmap_id_p (fringe_id) | |
447 | int fringe_id; | |
448 | { | |
449 | return (fringe_id >= NO_FRINGE_BITMAP | |
450 | && fringe_id < max_used_fringe_bitmap | |
451 | && (fringe_id < MAX_STANDARD_FRINGE_BITMAPS | |
452 | || fringe_bitmaps[fringe_id] != NULL)); | |
453 | } | |
454 | ||
455 | /* Draw the bitmap WHICH in one of the left or right fringes of | |
456 | window W. ROW is the glyph row for which to display the bitmap; it | |
457 | determines the vertical position at which the bitmap has to be | |
458 | drawn. | |
459 | LEFT_P is 1 for left fringe, 0 for right fringe. | |
460 | */ | |
461 | ||
462 | void | |
463 | draw_fringe_bitmap_1 (w, row, left_p, overlay, which) | |
464 | struct window *w; | |
465 | struct glyph_row *row; | |
466 | int left_p, overlay; | |
467 | enum fringe_bitmap_type which; | |
468 | { | |
469 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
470 | struct draw_fringe_bitmap_params p; | |
471 | struct fringe_bitmap *fb; | |
472 | int period; | |
473 | int face_id = DEFAULT_FACE_ID; | |
474 | ||
475 | p.cursor_p = 0; | |
476 | p.overlay_p = (overlay & 1) == 1; | |
477 | p.cursor_p = (overlay & 2) == 2; | |
478 | ||
479 | if (which != NO_FRINGE_BITMAP) | |
480 | { | |
481 | } | |
482 | else if (left_p) | |
483 | { | |
484 | which = row->left_fringe_bitmap; | |
485 | face_id = row->left_fringe_face_id; | |
486 | } | |
487 | else | |
488 | { | |
489 | which = row->right_fringe_bitmap; | |
490 | face_id = row->right_fringe_face_id; | |
491 | } | |
492 | ||
493 | if (face_id == DEFAULT_FACE_ID) | |
494 | face_id = fringe_faces[which]; | |
495 | ||
496 | fb = fringe_bitmaps[which]; | |
497 | if (fb == NULL) | |
498 | fb = &standard_bitmaps[which < MAX_STANDARD_FRINGE_BITMAPS | |
499 | ? which : UNDEF_FRINGE_BITMAP]; | |
500 | ||
501 | period = fb->period; | |
502 | ||
503 | /* Convert row to frame coordinates. */ | |
504 | p.y = WINDOW_TO_FRAME_PIXEL_Y (w, row->y); | |
505 | ||
506 | p.which = which; | |
507 | p.bits = fb->bits; | |
508 | p.wd = fb->width; | |
509 | ||
510 | p.h = fb->height; | |
511 | p.dh = (period > 0 ? (p.y % period) : 0); | |
512 | p.h -= p.dh; | |
513 | /* Clip bitmap if too high. */ | |
514 | if (p.h > row->height) | |
515 | p.h = row->height; | |
516 | ||
517 | p.face = FACE_FROM_ID (f, face_id); | |
518 | ||
519 | if (p.face == NULL) | |
520 | { | |
521 | /* Why does this happen? ++kfs */ | |
522 | return; | |
523 | } | |
524 | ||
525 | PREPARE_FACE_FOR_DISPLAY (f, p.face); | |
526 | ||
527 | /* Clear left fringe if no bitmap to draw or if bitmap doesn't fill | |
528 | the fringe. */ | |
529 | p.bx = -1; | |
530 | if (left_p) | |
531 | { | |
532 | int wd = WINDOW_LEFT_FRINGE_WIDTH (w); | |
533 | int x = window_box_left (w, (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
534 | ? LEFT_MARGIN_AREA | |
535 | : TEXT_AREA)); | |
536 | if (p.wd > wd) | |
537 | p.wd = wd; | |
538 | p.x = x - p.wd - (wd - p.wd) / 2; | |
539 | ||
540 | if (p.wd < wd || row->height > p.h) | |
541 | { | |
542 | /* If W has a vertical border to its left, don't draw over it. */ | |
543 | wd -= ((!WINDOW_LEFTMOST_P (w) | |
544 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) | |
545 | ? 1 : 0); | |
546 | p.bx = x - wd; | |
547 | p.nx = wd; | |
548 | } | |
549 | } | |
550 | else | |
551 | { | |
552 | int x = window_box_right (w, | |
553 | (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
554 | ? RIGHT_MARGIN_AREA | |
555 | : TEXT_AREA)); | |
556 | int wd = WINDOW_RIGHT_FRINGE_WIDTH (w); | |
557 | if (p.wd > wd) | |
558 | p.wd = wd; | |
559 | p.x = x + (wd - p.wd) / 2; | |
560 | /* Clear right fringe if no bitmap to draw of if bitmap doesn't fill | |
561 | the fringe. */ | |
562 | if (p.wd < wd || row->height > p.h) | |
563 | { | |
564 | p.bx = x; | |
565 | p.nx = wd; | |
566 | } | |
567 | } | |
568 | ||
569 | if (p.bx >= 0) | |
570 | { | |
571 | int header_line_height = WINDOW_HEADER_LINE_HEIGHT (w); | |
572 | ||
573 | p.by = WINDOW_TO_FRAME_PIXEL_Y (w, max (header_line_height, row->y)); | |
574 | p.ny = row->visible_height; | |
575 | } | |
576 | ||
577 | /* Adjust y to the offset in the row to start drawing the bitmap. */ | |
578 | switch (fb->align) | |
579 | { | |
580 | case ALIGN_BITMAP_CENTER: | |
581 | p.y += (row->height - p.h) / 2; | |
582 | break; | |
583 | case ALIGN_BITMAP_BOTTOM: | |
584 | p.h = fb->height; | |
585 | p.y += (row->visible_height - p.h); | |
586 | break; | |
587 | case ALIGN_BITMAP_TOP: | |
588 | break; | |
589 | } | |
590 | ||
591 | rif->draw_fringe_bitmap (w, row, &p); | |
592 | } | |
593 | ||
594 | void | |
595 | draw_fringe_bitmap (w, row, left_p) | |
596 | struct window *w; | |
597 | struct glyph_row *row; | |
598 | int left_p; | |
599 | { | |
600 | int overlay = 0; | |
601 | ||
602 | if (!left_p && row->cursor_in_fringe_p) | |
603 | { | |
604 | int cursor = NO_FRINGE_BITMAP; | |
605 | ||
606 | switch (w->phys_cursor_type) | |
607 | { | |
608 | case HOLLOW_BOX_CURSOR: | |
0881a0fd | 609 | if (row->visible_height >= STANDARD_BITMAP_HEIGHT (hollow_box_cursor_bits)) |
2d05deef KS |
610 | cursor = HOLLOW_BOX_CURSOR_BITMAP; |
611 | else | |
612 | cursor = HOLLOW_SQUARE_BITMAP; | |
613 | break; | |
614 | case FILLED_BOX_CURSOR: | |
615 | cursor = FILLED_BOX_CURSOR_BITMAP; | |
616 | break; | |
617 | case BAR_CURSOR: | |
618 | cursor = BAR_CURSOR_BITMAP; | |
619 | break; | |
620 | case HBAR_CURSOR: | |
621 | cursor = HBAR_CURSOR_BITMAP; | |
622 | break; | |
623 | case NO_CURSOR: | |
624 | default: | |
625 | w->phys_cursor_on_p = 0; | |
626 | row->cursor_in_fringe_p = 0; | |
627 | break; | |
628 | } | |
629 | if (cursor != NO_FRINGE_BITMAP) | |
630 | { | |
631 | draw_fringe_bitmap_1 (w, row, 0, 2, cursor); | |
632 | overlay = cursor == FILLED_BOX_CURSOR_BITMAP ? 3 : 1; | |
633 | } | |
634 | } | |
635 | ||
636 | draw_fringe_bitmap_1 (w, row, left_p, overlay, NO_FRINGE_BITMAP); | |
637 | ||
638 | if (left_p && row->overlay_arrow_p) | |
1c2a9e98 KS |
639 | draw_fringe_bitmap_1 (w, row, 1, 1, |
640 | (w->overlay_arrow_bitmap | |
641 | ? w->overlay_arrow_bitmap | |
642 | : OVERLAY_ARROW_BITMAP)); | |
2d05deef KS |
643 | } |
644 | ||
645 | ||
646 | /* Draw fringe bitmaps for glyph row ROW on window W. Call this | |
647 | function with input blocked. */ | |
648 | ||
649 | void | |
650 | draw_row_fringe_bitmaps (w, row) | |
651 | struct window *w; | |
652 | struct glyph_row *row; | |
653 | { | |
654 | xassert (interrupt_input_blocked); | |
655 | ||
656 | /* If row is completely invisible, because of vscrolling, we | |
657 | don't have to draw anything. */ | |
658 | if (row->visible_height <= 0) | |
659 | return; | |
660 | ||
661 | if (WINDOW_LEFT_FRINGE_WIDTH (w) != 0) | |
662 | draw_fringe_bitmap (w, row, 1); | |
663 | ||
664 | if (WINDOW_RIGHT_FRINGE_WIDTH (w) != 0) | |
665 | draw_fringe_bitmap (w, row, 0); | |
666 | } | |
667 | ||
668 | /* Draw the fringes of window W. Only fringes for rows marked for | |
669 | update in redraw_fringe_bitmaps_p are drawn. */ | |
670 | ||
671 | void | |
672 | draw_window_fringes (w) | |
673 | struct window *w; | |
674 | { | |
675 | struct glyph_row *row; | |
676 | int yb = window_text_bottom_y (w); | |
677 | int nrows = w->current_matrix->nrows; | |
678 | int y = 0, rn; | |
679 | ||
680 | if (w->pseudo_window_p) | |
681 | return; | |
682 | ||
683 | for (y = 0, rn = 0, row = w->current_matrix->rows; | |
684 | y < yb && rn < nrows; | |
685 | y += row->height, ++row, ++rn) | |
686 | { | |
687 | if (!row->redraw_fringe_bitmaps_p) | |
688 | continue; | |
689 | draw_row_fringe_bitmaps (w, row); | |
690 | row->redraw_fringe_bitmaps_p = 0; | |
691 | } | |
692 | } | |
693 | ||
694 | ||
695 | /* Recalculate the bitmaps to show in the fringes of window W. | |
696 | If FORCE_P is 0, only mark rows with modified bitmaps for update in | |
697 | redraw_fringe_bitmaps_p; else mark all rows for update. */ | |
698 | ||
699 | int | |
700 | update_window_fringes (w, force_p) | |
701 | struct window *w; | |
702 | int force_p; | |
703 | { | |
704 | struct glyph_row *row, *cur = 0; | |
705 | int yb = window_text_bottom_y (w); | |
706 | int rn, nrows = w->current_matrix->nrows; | |
707 | int y; | |
708 | int redraw_p = 0; | |
709 | Lisp_Object ind; | |
710 | int boundary_pos = 0, arrow_pos = 0; | |
711 | int empty_pos = 0; | |
712 | ||
713 | if (w->pseudo_window_p) | |
714 | return 0; | |
715 | ||
716 | if (!MINI_WINDOW_P (w) | |
717 | && (ind = XBUFFER (w->buffer)->indicate_buffer_boundaries, !NILP (ind))) | |
718 | { | |
719 | int do_eob = 1, do_bob = 1; | |
720 | Lisp_Object arrows; | |
721 | ||
722 | if (CONSP (ind)) | |
723 | arrows = XCDR (ind), ind = XCAR (ind); | |
724 | else | |
725 | arrows = ind; | |
726 | ||
727 | if (EQ (ind, Qleft)) | |
728 | boundary_pos = -1; | |
729 | else if (EQ (ind, Qright)) | |
730 | boundary_pos = 1; | |
731 | ||
732 | if (EQ (arrows, Qleft)) | |
733 | arrow_pos = -1; | |
734 | else if (EQ (arrows, Qright)) | |
735 | arrow_pos = 1; | |
736 | ||
737 | for (y = 0, rn = 0; | |
738 | y < yb && rn < nrows; | |
739 | y += row->height, ++rn) | |
740 | { | |
741 | unsigned indicate_bob_p, indicate_top_line_p; | |
742 | unsigned indicate_eob_p, indicate_bottom_line_p; | |
bffe8c26 | 743 | |
2d05deef KS |
744 | row = w->desired_matrix->rows + rn; |
745 | if (!row->enabled_p) | |
746 | row = w->current_matrix->rows + rn; | |
747 | ||
748 | indicate_bob_p = row->indicate_bob_p; | |
749 | indicate_top_line_p = row->indicate_top_line_p; | |
750 | indicate_eob_p = row->indicate_eob_p; | |
751 | indicate_bottom_line_p = row->indicate_bottom_line_p; | |
bffe8c26 | 752 | |
2d05deef KS |
753 | row->indicate_bob_p = row->indicate_top_line_p = 0; |
754 | row->indicate_eob_p = row->indicate_bottom_line_p = 0; | |
755 | ||
756 | if (!NILP (ind) | |
757 | && MATRIX_ROW_START_CHARPOS (row) <= BUF_BEGV (XBUFFER (w->buffer))) | |
758 | row->indicate_bob_p = do_bob, do_bob = 0; | |
759 | else if (!NILP (arrows) | |
760 | && (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0) == rn) | |
761 | row->indicate_top_line_p = 1; | |
762 | ||
763 | if (!NILP (ind) | |
764 | && MATRIX_ROW_END_CHARPOS (row) >= BUF_ZV (XBUFFER (w->buffer))) | |
765 | row->indicate_eob_p = do_eob, do_eob = 0; | |
766 | else if (!NILP (arrows) | |
767 | && y + row->height >= yb) | |
768 | row->indicate_bottom_line_p = 1; | |
769 | ||
770 | if (indicate_bob_p != row->indicate_bob_p | |
771 | || indicate_top_line_p != row->indicate_top_line_p | |
772 | || indicate_eob_p != row->indicate_eob_p | |
773 | || indicate_bottom_line_p != row->indicate_bottom_line_p) | |
774 | row->redraw_fringe_bitmaps_p = 1; | |
775 | } | |
776 | } | |
777 | ||
778 | if (EQ (XBUFFER (w->buffer)->indicate_empty_lines, Qright)) | |
779 | empty_pos = 1; | |
780 | else if (EQ (XBUFFER (w->buffer)->indicate_empty_lines, Qleft)) | |
781 | empty_pos = -1; | |
782 | ||
783 | for (y = 0, rn = 0; | |
784 | y < yb && rn < nrows; | |
785 | y += row->height, rn++) | |
786 | { | |
787 | enum fringe_bitmap_type left, right; | |
788 | unsigned left_face_id, right_face_id; | |
789 | ||
790 | row = w->desired_matrix->rows + rn; | |
791 | cur = w->current_matrix->rows + rn; | |
792 | if (!row->enabled_p) | |
793 | row = cur; | |
794 | ||
795 | left_face_id = right_face_id = DEFAULT_FACE_ID; | |
796 | ||
797 | /* Decide which bitmap to draw in the left fringe. */ | |
798 | if (WINDOW_LEFT_FRINGE_WIDTH (w) == 0) | |
799 | left = NO_FRINGE_BITMAP; | |
800 | else if (row->left_user_fringe_bitmap != NO_FRINGE_BITMAP) | |
801 | { | |
802 | left = row->left_user_fringe_bitmap; | |
803 | left_face_id = row->left_user_fringe_face_id; | |
804 | } | |
2d05deef KS |
805 | else if (row->indicate_bob_p && boundary_pos <= 0) |
806 | left = ((row->indicate_eob_p && boundary_pos < 0) | |
807 | ? LEFT_BRACKET_BITMAP : TOP_LEFT_ANGLE_BITMAP); | |
808 | else if (row->indicate_eob_p && boundary_pos < 0) | |
809 | left = BOTTOM_LEFT_ANGLE_BITMAP; | |
810 | else if (row->truncated_on_left_p) | |
811 | left = LEFT_TRUNCATION_BITMAP; | |
812 | else if (MATRIX_ROW_CONTINUATION_LINE_P (row)) | |
813 | left = CONTINUATION_LINE_BITMAP; | |
814 | else if (row->indicate_empty_line_p && empty_pos <= 0) | |
815 | left = ZV_LINE_BITMAP; | |
816 | else if (row->indicate_top_line_p && arrow_pos <= 0) | |
817 | left = UP_ARROW_BITMAP; | |
818 | else if (row->indicate_bottom_line_p && arrow_pos < 0) | |
819 | left = DOWN_ARROW_BITMAP; | |
820 | else | |
821 | left = NO_FRINGE_BITMAP; | |
822 | ||
823 | /* Decide which bitmap to draw in the right fringe. */ | |
824 | if (WINDOW_RIGHT_FRINGE_WIDTH (w) == 0) | |
825 | right = NO_FRINGE_BITMAP; | |
826 | else if (row->right_user_fringe_bitmap != NO_FRINGE_BITMAP) | |
827 | { | |
828 | right = row->right_user_fringe_bitmap; | |
829 | right_face_id = row->right_user_fringe_face_id; | |
830 | } | |
831 | else if (row->indicate_bob_p && boundary_pos > 0) | |
832 | right = ((row->indicate_eob_p && boundary_pos >= 0) | |
833 | ? RIGHT_BRACKET_BITMAP : TOP_RIGHT_ANGLE_BITMAP); | |
834 | else if (row->indicate_eob_p && boundary_pos >= 0) | |
835 | right = BOTTOM_RIGHT_ANGLE_BITMAP; | |
836 | else if (row->truncated_on_right_p) | |
837 | right = RIGHT_TRUNCATION_BITMAP; | |
838 | else if (row->continued_p) | |
839 | right = CONTINUED_LINE_BITMAP; | |
840 | else if (row->indicate_top_line_p && arrow_pos > 0) | |
841 | right = UP_ARROW_BITMAP; | |
842 | else if (row->indicate_bottom_line_p && arrow_pos >= 0) | |
843 | right = DOWN_ARROW_BITMAP; | |
844 | else if (row->indicate_empty_line_p | |
845 | && (empty_pos > 0 | |
846 | || (WINDOW_LEFT_FRINGE_WIDTH (w) == 0 && empty_pos == 0))) | |
847 | right = ZV_LINE_BITMAP; | |
848 | else | |
849 | right = NO_FRINGE_BITMAP; | |
850 | ||
851 | if (force_p | |
852 | || row->y != cur->y | |
853 | || row->visible_height != cur->visible_height | |
854 | || left != cur->left_fringe_bitmap | |
855 | || right != cur->right_fringe_bitmap | |
856 | || left_face_id != cur->left_fringe_face_id | |
857 | || right_face_id != cur->right_fringe_face_id | |
858 | || cur->redraw_fringe_bitmaps_p) | |
859 | { | |
860 | redraw_p = row->redraw_fringe_bitmaps_p = cur->redraw_fringe_bitmaps_p = 1; | |
861 | cur->left_fringe_bitmap = left; | |
862 | cur->right_fringe_bitmap = right; | |
863 | cur->left_fringe_face_id = left_face_id; | |
864 | cur->right_fringe_face_id = right_face_id; | |
865 | } | |
866 | ||
867 | if (row->overlay_arrow_p != cur->overlay_arrow_p) | |
868 | { | |
869 | redraw_p = row->redraw_fringe_bitmaps_p = cur->redraw_fringe_bitmaps_p = 1; | |
870 | cur->overlay_arrow_p = row->overlay_arrow_p; | |
871 | } | |
872 | ||
873 | row->left_fringe_bitmap = left; | |
874 | row->right_fringe_bitmap = right; | |
875 | row->left_fringe_face_id = left_face_id; | |
876 | row->right_fringe_face_id = right_face_id; | |
877 | } | |
878 | ||
879 | return redraw_p; | |
880 | } | |
881 | ||
882 | ||
bffe8c26 | 883 | /* Compute actual fringe widths for frame F. |
2d05deef KS |
884 | |
885 | If REDRAW is 1, redraw F if the fringe settings was actually | |
886 | modified and F is visible. | |
887 | ||
888 | Since the combined left and right fringe must occupy an integral | |
889 | number of columns, we may need to add some pixels to each fringe. | |
890 | Typically, we add an equal amount (+/- 1 pixel) to each fringe, | |
891 | but a negative width value is taken literally (after negating it). | |
892 | ||
893 | We never make the fringes narrower than specified. It is planned | |
894 | to make fringe bitmaps customizable and expandable, and at that | |
895 | time, the user will typically specify the minimum number of pixels | |
896 | needed for his bitmaps, so we shouldn't select anything less than | |
897 | what is specified. | |
898 | */ | |
899 | ||
900 | void | |
901 | compute_fringe_widths (f, redraw) | |
902 | struct frame *f; | |
903 | int redraw; | |
904 | { | |
905 | int o_left = FRAME_LEFT_FRINGE_WIDTH (f); | |
906 | int o_right = FRAME_RIGHT_FRINGE_WIDTH (f); | |
907 | int o_cols = FRAME_FRINGE_COLS (f); | |
908 | ||
909 | Lisp_Object left_fringe = Fassq (Qleft_fringe, f->param_alist); | |
910 | Lisp_Object right_fringe = Fassq (Qright_fringe, f->param_alist); | |
911 | int left_fringe_width, right_fringe_width; | |
912 | ||
913 | if (!NILP (left_fringe)) | |
914 | left_fringe = Fcdr (left_fringe); | |
915 | if (!NILP (right_fringe)) | |
916 | right_fringe = Fcdr (right_fringe); | |
917 | ||
918 | left_fringe_width = ((NILP (left_fringe) || !INTEGERP (left_fringe)) ? 8 : | |
919 | XINT (left_fringe)); | |
920 | right_fringe_width = ((NILP (right_fringe) || !INTEGERP (right_fringe)) ? 8 : | |
921 | XINT (right_fringe)); | |
922 | ||
923 | if (left_fringe_width || right_fringe_width) | |
924 | { | |
925 | int left_wid = left_fringe_width >= 0 ? left_fringe_width : -left_fringe_width; | |
926 | int right_wid = right_fringe_width >= 0 ? right_fringe_width : -right_fringe_width; | |
927 | int conf_wid = left_wid + right_wid; | |
928 | int font_wid = FRAME_COLUMN_WIDTH (f); | |
929 | int cols = (left_wid + right_wid + font_wid-1) / font_wid; | |
930 | int real_wid = cols * font_wid; | |
931 | if (left_wid && right_wid) | |
932 | { | |
933 | if (left_fringe_width < 0) | |
934 | { | |
935 | /* Left fringe width is fixed, adjust right fringe if necessary */ | |
936 | FRAME_LEFT_FRINGE_WIDTH (f) = left_wid; | |
937 | FRAME_RIGHT_FRINGE_WIDTH (f) = real_wid - left_wid; | |
938 | } | |
939 | else if (right_fringe_width < 0) | |
940 | { | |
941 | /* Right fringe width is fixed, adjust left fringe if necessary */ | |
942 | FRAME_LEFT_FRINGE_WIDTH (f) = real_wid - right_wid; | |
943 | FRAME_RIGHT_FRINGE_WIDTH (f) = right_wid; | |
944 | } | |
945 | else | |
946 | { | |
947 | /* Adjust both fringes with an equal amount. | |
948 | Note that we are doing integer arithmetic here, so don't | |
949 | lose a pixel if the total width is an odd number. */ | |
950 | int fill = real_wid - conf_wid; | |
951 | FRAME_LEFT_FRINGE_WIDTH (f) = left_wid + fill/2; | |
952 | FRAME_RIGHT_FRINGE_WIDTH (f) = right_wid + fill - fill/2; | |
953 | } | |
954 | } | |
955 | else if (left_fringe_width) | |
956 | { | |
957 | FRAME_LEFT_FRINGE_WIDTH (f) = real_wid; | |
958 | FRAME_RIGHT_FRINGE_WIDTH (f) = 0; | |
959 | } | |
960 | else | |
961 | { | |
962 | FRAME_LEFT_FRINGE_WIDTH (f) = 0; | |
963 | FRAME_RIGHT_FRINGE_WIDTH (f) = real_wid; | |
964 | } | |
965 | FRAME_FRINGE_COLS (f) = cols; | |
966 | } | |
967 | else | |
968 | { | |
969 | FRAME_LEFT_FRINGE_WIDTH (f) = 0; | |
970 | FRAME_RIGHT_FRINGE_WIDTH (f) = 0; | |
971 | FRAME_FRINGE_COLS (f) = 0; | |
972 | } | |
973 | ||
974 | if (redraw && FRAME_VISIBLE_P (f)) | |
975 | if (o_left != FRAME_LEFT_FRINGE_WIDTH (f) || | |
976 | o_right != FRAME_RIGHT_FRINGE_WIDTH (f) || | |
977 | o_cols != FRAME_FRINGE_COLS (f)) | |
978 | redraw_frame (f); | |
979 | } | |
980 | ||
981 | DEFUN ("destroy-fringe-bitmap", Fdestroy_fringe_bitmap, Sdestroy_fringe_bitmap, | |
982 | 1, 1, 0, | |
983 | doc: /* Destroy fringe bitmap WHICH. | |
984 | If WHICH overrides a standard fringe bitmap, the original bitmap is restored. */) | |
985 | (which) | |
986 | Lisp_Object which; | |
987 | { | |
988 | int n; | |
989 | struct fringe_bitmap **fbp; | |
990 | ||
991 | CHECK_NUMBER (which); | |
992 | if (n = XINT (which), n >= max_used_fringe_bitmap) | |
993 | return Qnil; | |
994 | ||
995 | fringe_faces[n] = FRINGE_FACE_ID; | |
996 | ||
997 | fbp = &fringe_bitmaps[n]; | |
998 | if (*fbp && (*fbp)->dynamic) | |
999 | { | |
1000 | if (rif->destroy_fringe_bitmap) | |
1001 | rif->destroy_fringe_bitmap (n); | |
1002 | xfree (*fbp); | |
1003 | *fbp = NULL; | |
1004 | } | |
1005 | ||
1006 | while (max_used_fringe_bitmap > MAX_STANDARD_FRINGE_BITMAPS | |
1007 | && fringe_bitmaps[max_used_fringe_bitmap - 1] == NULL) | |
1008 | max_used_fringe_bitmap--; | |
1009 | ||
1010 | return Qnil; | |
1011 | } | |
1012 | ||
1013 | ||
1014 | /* Initialize bitmap bit. | |
0881a0fd KS |
1015 | |
1016 | On X, we bit-swap the built-in bitmaps and reduce bitmap | |
1017 | from short to char array if width is <= 8 bits. | |
1018 | ||
bd231131 KS |
1019 | On MAC with big-endian CPU, we need to byte-swap each short. |
1020 | ||
1021 | On W32 and MAC (little endian), there's no need to do this. | |
2d05deef KS |
1022 | */ |
1023 | ||
1024 | void | |
1025 | init_fringe_bitmap (which, fb, once_p) | |
1026 | enum fringe_bitmap_type which; | |
1027 | struct fringe_bitmap *fb; | |
1028 | int once_p; | |
1029 | { | |
1030 | if (once_p || fb->dynamic) | |
1031 | { | |
0881a0fd KS |
1032 | #if defined (HAVE_X_WINDOWS) |
1033 | static unsigned char swap_nibble[16] | |
1034 | = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */ | |
1035 | 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */ | |
1036 | 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */ | |
bd231131 | 1037 | 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */ |
0881a0fd | 1038 | unsigned short *bits = fb->bits; |
2d05deef | 1039 | int j; |
0881a0fd KS |
1040 | |
1041 | if (fb->width <= 8) | |
1042 | { | |
1043 | unsigned char *cbits = (unsigned char *)fb->bits; | |
1044 | for (j = 0; j < fb->height; j++) | |
1045 | { | |
1046 | unsigned short b = *bits++; | |
1047 | unsigned char c; | |
1048 | c = (unsigned char)((swap_nibble[b & 0xf] << 4) | |
1049 | | (swap_nibble[(b>>4) & 0xf])); | |
1050 | *cbits++ = (c >> (8 - fb->width)); | |
1051 | } | |
1052 | } | |
1053 | else | |
2d05deef | 1054 | { |
0881a0fd KS |
1055 | for (j = 0; j < fb->height; j++) |
1056 | { | |
1057 | unsigned short b = *bits; | |
1058 | b = (unsigned short)((swap_nibble[b & 0xf] << 12) | |
1059 | | (swap_nibble[(b>>4) & 0xf] << 8) | |
1060 | | (swap_nibble[(b>>8) & 0xf] << 4) | |
1061 | | (swap_nibble[(b>>12) & 0xf])); | |
1062 | *bits++ = (b >> (16 - fb->width)); | |
1063 | } | |
2d05deef | 1064 | } |
bd231131 KS |
1065 | #endif /* HAVE_X_WINDOWS */ |
1066 | ||
1067 | #if defined (MAC_OS) && defined (WORDS_BIG_ENDIAN) | |
1068 | unsigned short *bits = fb->bits; | |
159c348e | 1069 | int j; |
bd231131 KS |
1070 | for (j = 0; j < fb->height; j++) |
1071 | { | |
1072 | unsigned short b = *bits; | |
1073 | *bits++ = ((b >> 8) & 0xff) | ((b & 0xff) << 8); | |
1074 | } | |
1075 | #endif /* MAC_OS && WORDS_BIG_ENDIAN */ | |
2d05deef KS |
1076 | } |
1077 | ||
1078 | if (!once_p) | |
1079 | { | |
1080 | Fdestroy_fringe_bitmap (make_number (which)); | |
1081 | ||
1082 | if (rif->define_fringe_bitmap) | |
1083 | rif->define_fringe_bitmap (which, fb->bits, fb->height, fb->width); | |
1084 | ||
1085 | fringe_bitmaps[which] = fb; | |
1086 | if (which >= max_used_fringe_bitmap) | |
1087 | max_used_fringe_bitmap = which + 1; | |
1088 | } | |
1089 | } | |
1090 | ||
1091 | ||
1092 | DEFUN ("define-fringe-bitmap", Fdefine_fringe_bitmap, Sdefine_fringe_bitmap, | |
1093 | 1, 5, 0, | |
1094 | doc: /* Define a fringe bitmap from BITS of height HEIGHT and width WIDTH. | |
0881a0fd KS |
1095 | BITS is either a string or a vector of integers. |
1096 | HEIGHT is height of bitmap. If HEIGHT is nil, use length of BITS. | |
1097 | WIDTH must be an integer between 1 and 16, or nil which defaults to 8. | |
bffe8c26 | 1098 | Optional fourth arg ALIGN may be one of `top', `center', or `bottom', |
0881a0fd KS |
1099 | indicating the positioning of the bitmap relative to the rows where it |
1100 | is used; the default is to center the bitmap. Fourth arg may also be a | |
1101 | list (ALIGN PERIODIC) where PERIODIC non-nil specifies that the bitmap | |
1102 | should be repeated. | |
2d05deef KS |
1103 | Optional fifth argument WHICH is bitmap number to redefine. |
1104 | Return new bitmap number, or nil of no more free bitmap slots. */) | |
1105 | (bits, height, width, align, which) | |
1106 | Lisp_Object bits, height, width, align, which; | |
1107 | { | |
1108 | Lisp_Object len; | |
1109 | int n, h, i, j; | |
0881a0fd | 1110 | unsigned short *b; |
2d05deef KS |
1111 | struct fringe_bitmap fb, *xfb; |
1112 | int fill1 = 0, fill2 = 0; | |
1113 | ||
1114 | if (!STRINGP (bits) && !VECTORP (bits)) | |
1115 | bits = wrong_type_argument (Qstringp, bits); | |
1116 | ||
1117 | len = Flength (bits); | |
1118 | ||
1119 | if (NILP (height)) | |
1120 | h = fb.height = XINT (len); | |
1121 | else | |
1122 | { | |
1123 | CHECK_NUMBER (height); | |
1124 | fb.height = min (XINT (height), 255); | |
1125 | if (fb.height > XINT (len)) | |
1126 | { | |
1127 | h = XINT (len); | |
1128 | fill1 = (fb.height - h) / 2; | |
1129 | fill2 = fb.height - h - fill1; | |
1130 | } | |
1131 | } | |
bffe8c26 | 1132 | |
2d05deef KS |
1133 | if (NILP (width)) |
1134 | fb.width = 8; | |
1135 | else | |
1136 | { | |
1137 | CHECK_NUMBER (width); | |
1138 | fb.width = min (XINT (width), 255); | |
1139 | } | |
1140 | ||
1141 | fb.period = 0; | |
1142 | fb.align = ALIGN_BITMAP_CENTER; | |
1143 | ||
1144 | if (CONSP (align)) | |
1145 | { | |
1146 | Lisp_Object period = XCDR (align); | |
1147 | if (CONSP (period)) | |
1148 | { | |
1149 | period = XCAR (period); | |
1150 | if (!NILP (period)) | |
1151 | { | |
1152 | fb.period = fb.height; | |
1153 | fb.height = 255; | |
1154 | } | |
1155 | } | |
1156 | align = XCAR (align); | |
1157 | } | |
1158 | if (EQ (align, Qtop)) | |
1159 | fb.align = ALIGN_BITMAP_TOP; | |
1160 | else if (EQ (align, Qbottom)) | |
1161 | fb.align = ALIGN_BITMAP_BOTTOM; | |
1162 | else if (!NILP (align) && !EQ (align, Qcenter)) | |
1163 | error ("Bad align argument"); | |
1164 | ||
1165 | if (NILP (which)) | |
1166 | { | |
1167 | if (max_used_fringe_bitmap < MAX_FRINGE_BITMAPS) | |
d2f14999 | 1168 | n = max_used_fringe_bitmap++; |
2d05deef KS |
1169 | else |
1170 | { | |
1171 | for (n = MAX_STANDARD_FRINGE_BITMAPS; | |
1172 | n < MAX_FRINGE_BITMAPS; | |
1173 | n++) | |
1174 | if (fringe_bitmaps[n] == NULL) | |
1175 | break; | |
1176 | if (n == MAX_FRINGE_BITMAPS) | |
1177 | return Qnil; | |
1178 | } | |
1179 | which = make_number (n); | |
1180 | } | |
1181 | else | |
1182 | { | |
1183 | CHECK_NUMBER (which); | |
1184 | n = XINT (which); | |
1185 | if (n <= NO_FRINGE_BITMAP || n >= MAX_FRINGE_BITMAPS) | |
1186 | error ("Invalid fringe bitmap number"); | |
1187 | } | |
1188 | ||
1189 | fb.dynamic = 1; | |
1190 | ||
beaedd56 AS |
1191 | xfb = (struct fringe_bitmap *) xmalloc (sizeof fb |
1192 | + fb.height * BYTES_PER_BITMAP_ROW); | |
1193 | fb.bits = b = (unsigned short *) (xfb + 1); | |
2d05deef KS |
1194 | bzero (b, fb.height); |
1195 | ||
1196 | j = 0; | |
1197 | while (j < fb.height) | |
1198 | { | |
1199 | for (i = 0; i < fill1 && j < fb.height; i++) | |
1200 | b[j++] = 0; | |
beaedd56 | 1201 | for (i = 0; i < h && j < fb.height; i++) |
2d05deef KS |
1202 | { |
1203 | Lisp_Object elt = Faref (bits, make_number (i)); | |
1204 | b[j++] = NUMBERP (elt) ? XINT (elt) : 0; | |
1205 | } | |
1206 | for (i = 0; i < fill2 && j < fb.height; i++) | |
1207 | b[j++] = 0; | |
1208 | } | |
1209 | ||
1210 | *xfb = fb; | |
1211 | ||
1212 | init_fringe_bitmap (n, xfb, 0); | |
1213 | ||
1214 | return which; | |
1215 | } | |
1216 | ||
1217 | DEFUN ("set-fringe-bitmap-face", Fset_fringe_bitmap_face, Sset_fringe_bitmap_face, | |
1218 | 1, 2, 0, | |
bffe8c26 | 1219 | doc: /* Set face for fringe bitmap FRINGE-ID to FACE. |
2d05deef KS |
1220 | If FACE is nil, reset face to default fringe face. */) |
1221 | (fringe_id, face) | |
1222 | Lisp_Object fringe_id, face; | |
1223 | { | |
1224 | int face_id; | |
1225 | ||
1226 | CHECK_NUMBER (fringe_id); | |
1227 | if (!valid_fringe_bitmap_id_p (XINT (fringe_id))) | |
1228 | error ("Invalid fringe id"); | |
1229 | ||
1230 | if (!NILP (face)) | |
1231 | { | |
1232 | face_id = lookup_named_face (SELECTED_FRAME (), face, 'A'); | |
1233 | if (face_id < 0) | |
1234 | error ("No such face"); | |
1235 | } | |
1236 | else | |
1237 | face_id = FRINGE_FACE_ID; | |
1238 | ||
1239 | fringe_faces [XINT (fringe_id)] = face_id; | |
1240 | ||
1241 | return Qnil; | |
1242 | } | |
1243 | ||
1244 | DEFUN ("fringe-bitmaps-at-pos", Ffringe_bitmaps_at_pos, Sfringe_bitmaps_at_pos, | |
1245 | 0, 2, 0, | |
bffe8c26 | 1246 | doc: /* Return fringe bitmaps of row containing position POS in window WINDOW. |
2d05deef KS |
1247 | If WINDOW is nil, use selected window. If POS is nil, use value of point |
1248 | in that window. Return value is a cons (LEFT . RIGHT) where LEFT and RIGHT | |
1249 | are the fringe bitmap numbers for the bitmaps in the left and right fringe, | |
1250 | resp. Return nil if POS is not visible in WINDOW. */) | |
1251 | (pos, window) | |
d30b6b33 | 1252 | Lisp_Object pos, window; |
2d05deef KS |
1253 | { |
1254 | struct window *w; | |
1255 | struct buffer *old_buffer = NULL; | |
1256 | struct glyph_row *row; | |
1257 | int textpos; | |
1258 | ||
1259 | if (NILP (window)) | |
1260 | window = selected_window; | |
1261 | CHECK_WINDOW (window); | |
1262 | w = XWINDOW (window); | |
1263 | ||
1264 | if (!NILP (pos)) | |
1265 | { | |
1266 | CHECK_NUMBER_COERCE_MARKER (pos); | |
1267 | textpos = XINT (pos); | |
1268 | } | |
1269 | else if (w == XWINDOW (selected_window)) | |
1270 | textpos = PT; | |
1271 | else | |
1272 | textpos = XMARKER (w->pointm)->charpos; | |
1273 | ||
1274 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
1275 | row = row_containing_pos (w, textpos, row, NULL, 0); | |
1276 | if (row) | |
1277 | return Fcons (make_number (row->left_fringe_bitmap), | |
1278 | make_number (row->right_fringe_bitmap)); | |
1279 | else | |
1280 | return Qnil; | |
1281 | } | |
1282 | ||
1283 | ||
1284 | /*********************************************************************** | |
1285 | Initialization | |
1286 | ***********************************************************************/ | |
1287 | ||
1288 | void | |
1289 | syms_of_fringe () | |
1290 | { | |
1291 | ||
1292 | defsubr (&Sdestroy_fringe_bitmap); | |
1293 | defsubr (&Sdefine_fringe_bitmap); | |
1294 | defsubr (&Sfringe_bitmaps_at_pos); | |
1295 | defsubr (&Sset_fringe_bitmap_face); | |
1296 | ||
1297 | DEFVAR_LISP ("overflow-newline-into-fringe", &Voverflow_newline_into_fringe, | |
1298 | doc: /* *Non-nil means that newline may flow into the right fringe. | |
1299 | This means that display lines which are exactly as wide as the window | |
1300 | (not counting the final newline) will only occupy one screen line, by | |
1301 | showing (or hiding) the final newline in the right fringe; when point | |
1302 | is at the final newline, the cursor is shown in the right fringe. | |
1303 | If nil, also continue lines which are exactly as wide as the window. */); | |
1304 | Voverflow_newline_into_fringe = Qt; | |
1305 | ||
1306 | } | |
1307 | ||
1308 | /* Initialize this module when Emacs starts. */ | |
1309 | ||
1310 | void | |
1311 | init_fringe_once () | |
1312 | { | |
1313 | enum fringe_bitmap_type bt; | |
1314 | ||
1315 | for (bt = NO_FRINGE_BITMAP + 1; bt < MAX_STANDARD_FRINGE_BITMAPS; bt++) | |
1316 | init_fringe_bitmap(bt, &standard_bitmaps[bt], 1); | |
1317 | } | |
1318 | ||
1319 | void | |
1320 | init_fringe () | |
1321 | { | |
1322 | int i; | |
1323 | ||
1324 | bzero (fringe_bitmaps, sizeof fringe_bitmaps); | |
1325 | for (i = 0; i < MAX_FRINGE_BITMAPS; i++) | |
1326 | fringe_faces[i] = FRINGE_FACE_ID; | |
1327 | } | |
1328 | ||
1329 | #ifdef HAVE_NTGUI | |
1330 | ||
1331 | void | |
1332 | w32_init_fringe () | |
1333 | { | |
1334 | enum fringe_bitmap_type bt; | |
1335 | ||
1336 | for (bt = NO_FRINGE_BITMAP + 1; bt < MAX_STANDARD_FRINGE_BITMAPS; bt++) | |
1337 | { | |
1338 | struct fringe_bitmap *fb = &standard_bitmaps[bt]; | |
1339 | rif->define_fringe_bitmap (bt, fb->bits, fb->height, fb->width); | |
1340 | } | |
1341 | } | |
1342 | ||
1343 | void | |
1344 | w32_reset_fringes () | |
1345 | { | |
1346 | /* Destroy row bitmaps. */ | |
1347 | int bt; | |
bffe8c26 | 1348 | |
2d05deef KS |
1349 | for (bt = NO_FRINGE_BITMAP + 1; bt < max_used_fringe_bitmap; bt++) |
1350 | rif->destroy_fringe_bitmap (bt); | |
1351 | } | |
1352 | ||
bd231131 | 1353 | #endif /* HAVE_NTGUI */ |
2d05deef KS |
1354 | |
1355 | #endif /* HAVE_WINDOW_SYSTEM */ | |
1356 | ||
429e7e2d MB |
1357 | /* arch-tag: 04596920-43eb-473d-b319-82712338162d |
1358 | (do not change this comment) */ |