Mercurial > hg > xemacs-beta
annotate src/window.c @ 4699:0e1461b592ce
Check for gdbm/ndbm.h, too.
author | Stephen J. Turnbull <stephen@xemacs.org> |
---|---|
date | Thu, 24 Sep 2009 09:36:49 +0900 |
parents | 80cd90837ac5 |
children | 1d61580e0cf7 |
rev | line source |
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428 | 1 /* Window creation, deletion and examination for XEmacs. |
2 Copyright (C) 1985-1987, 1992-1995 Free Software Foundation, Inc. | |
3 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois. | |
793 | 4 Copyright (C) 1995, 1996, 2002 Ben Wing. |
428 | 5 Copyright (C) 1996 Chuck Thompson. |
6 | |
7 This file is part of XEmacs. | |
8 | |
9 XEmacs is free software; you can redistribute it and/or modify it | |
10 under the terms of the GNU General Public License as published by the | |
11 Free Software Foundation; either version 2, or (at your option) any | |
12 later version. | |
13 | |
14 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
17 for more details. | |
18 | |
19 You should have received a copy of the GNU General Public License | |
20 along with XEmacs; see the file COPYING. If not, write to | |
21 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
22 Boston, MA 02111-1307, USA. */ | |
23 | |
24 /* Synched up with: FSF 19.30. */ | |
25 /* Beginning to diverge significantly. */ | |
26 | |
853 | 27 /* Authorship: |
28 | |
29 Based on code from pre-release FSF 19, c. 1991. | |
30 Significantly reworked by Chuck Thompson, 1993-1996. | |
31 window mirror stuff added by Chuck Thompson c. 1993. | |
32 various cleanup by Ben Wing c. 1995 (window slots, window init code, | |
33 memory usage, synch. up to FSF 19.30, other). | |
34 Unknown work by Andy Piper. | |
35 new window-width/height fns. by Ben Wing, Mar 2000. */ | |
36 | |
428 | 37 /* This file has been Mule-ized. */ |
38 | |
39 #include <config.h> | |
40 #include "lisp.h" | |
41 | |
42 #include "buffer.h" | |
800 | 43 #include "commands.h" |
872 | 44 #include "device-impl.h" |
800 | 45 #include "elhash.h" |
428 | 46 #include "faces.h" |
872 | 47 #include "frame-impl.h" |
800 | 48 #include "glyphs.h" |
49 #include "gutter.h" | |
428 | 50 #include "objects.h" |
51 #include "redisplay.h" | |
872 | 52 #include "window-impl.h" |
428 | 53 |
1149 | 54 Lisp_Object Qwindowp, Qwindow_live_p; |
428 | 55 Lisp_Object Qdisplay_buffer; |
56 | |
57 #ifdef MEMORY_USAGE_STATS | |
58 Lisp_Object Qface_cache, Qglyph_cache, Qline_start_cache, Qother_redisplay; | |
59 #ifdef HAVE_SCROLLBARS | |
60 Lisp_Object Qscrollbar_instances; | |
61 #endif | |
62 #endif | |
63 | |
1979 | 64 extern int allow_deletion_of_last_visible_frame; |
65 | |
428 | 66 EXFUN (Fnext_window, 4); |
67 | |
68 static int window_pixel_width_to_char_width (struct window *w, | |
69 int pixel_width, | |
70 int include_margins_p); | |
71 static int window_char_width_to_pixel_width (struct window *w, | |
72 int char_width, | |
73 int include_margins_p); | |
74 static int window_pixel_height_to_char_height (struct window *w, | |
75 int pixel_height, | |
76 int include_gutters_p); | |
77 static int window_char_height_to_pixel_height (struct window *w, | |
78 int char_height, | |
79 int include_gutters_p); | |
444 | 80 static void change_window_height (Lisp_Object window, int delta, |
81 Lisp_Object horizontalp, int inpixels); | |
428 | 82 |
83 /* Thickness of shadow border around 3d modelines. */ | |
84 Lisp_Object Vmodeline_shadow_thickness; | |
85 | |
86 /* Whether vertical dividers are draggable and displayed */ | |
87 Lisp_Object Vvertical_divider_always_visible_p; | |
88 | |
89 /* Whether a modeline should be displayed. */ | |
90 Lisp_Object Vhas_modeline_p; | |
91 | |
92 /* Thickness of shadow border around vertical dividers. */ | |
93 Lisp_Object Vvertical_divider_shadow_thickness; | |
94 | |
95 /* Divider surface width (not counting 3-d borders) */ | |
96 Lisp_Object Vvertical_divider_line_width; | |
97 | |
442 | 98 /* Spacing between outer edge of divider border and window edge */ |
428 | 99 Lisp_Object Vvertical_divider_spacing; |
100 | |
101 /* How much to scroll by per-line. */ | |
102 Lisp_Object Vwindow_pixel_scroll_increment; | |
103 | |
104 /* Scroll if point lands on the bottom line and that line is partially | |
105 clipped. */ | |
106 int scroll_on_clipped_lines; | |
107 | |
108 /* The minibuffer window of the selected frame. | |
109 Note that you cannot test for minibufferness of an arbitrary window | |
110 by comparing against this; but you can test for minibufferness of | |
111 the selected window. */ | |
112 Lisp_Object minibuf_window; | |
113 | |
114 /* Non-nil means it is the window for C-M-v to scroll | |
115 when the minibuffer is selected. */ | |
116 Lisp_Object Vminibuffer_scroll_window; | |
117 | |
118 /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
119 Lisp_Object Vother_window_scroll_buffer; | |
120 | |
121 /* Non-nil means it's the function to call to display temp buffers. */ | |
122 Lisp_Object Vtemp_buffer_show_function; | |
123 | |
124 /* If a window gets smaller than either of these, it is removed. */ | |
458 | 125 Fixnum window_min_height; |
126 Fixnum window_min_width; | |
428 | 127 |
128 /* Number of lines of continuity in scrolling by screenfuls. */ | |
458 | 129 Fixnum next_screen_context_lines; |
428 | 130 |
1149 | 131 Lisp_Object Qcurrent_window_configuration, Qset_window_configuration; |
428 | 132 |
707 | 133 Lisp_Object Qtruncate_partial_width_windows; |
134 | |
428 | 135 #define SET_LAST_MODIFIED(w, cache_too) \ |
136 do { \ | |
137 (w)->last_modified[CURRENT_DISP] = Qzero; \ | |
138 (w)->last_modified[DESIRED_DISP] = Qzero; \ | |
139 (w)->last_modified[CMOTION_DISP] = Qzero; \ | |
140 if (cache_too) \ | |
141 (w)->line_cache_last_updated = Qzero; \ | |
142 } while (0) | |
143 | |
144 #define SET_LAST_FACECHANGE(w) \ | |
145 do { \ | |
146 (w)->last_facechange[CURRENT_DISP] = Qzero; \ | |
147 (w)->last_facechange[DESIRED_DISP] = Qzero; \ | |
148 (w)->last_facechange[CMOTION_DISP] = Qzero; \ | |
149 } while (0) | |
150 | |
151 | |
1204 | 152 |
153 static const struct memory_description int_description_1[] = { | |
154 { XD_END } | |
155 }; | |
156 | |
157 static const struct sized_memory_description int_description = { | |
158 sizeof (int), | |
159 int_description_1 | |
160 }; | |
161 | |
162 static const struct memory_description int_dynarr_description_1[] = { | |
163 XD_DYNARR_DESC (int_dynarr, &int_description), | |
164 { XD_END } | |
165 }; | |
166 | |
167 static const struct sized_memory_description int_dynarr_description = { | |
168 sizeof (int_dynarr), | |
169 int_dynarr_description_1 | |
170 }; | |
171 | |
172 static const struct memory_description face_cachel_description_1[] = { | |
2367 | 173 { XD_BLOCK_PTR, offsetof (face_cachel, merged_faces), |
2551 | 174 1, { &int_dynarr_description } }, |
1204 | 175 { XD_LISP_OBJECT, offsetof (face_cachel, face) }, |
176 { XD_LISP_OBJECT, offsetof (face_cachel, foreground) }, | |
177 { XD_LISP_OBJECT, offsetof (face_cachel, background) }, | |
178 { XD_LISP_OBJECT_ARRAY, offsetof (face_cachel, font), NUM_LEADING_BYTES }, | |
179 { XD_LISP_OBJECT, offsetof (face_cachel, display_table) }, | |
180 { XD_LISP_OBJECT, offsetof (face_cachel, background_pixmap) }, | |
181 { XD_END } | |
182 }; | |
183 | |
3092 | 184 #ifdef NEW_GC |
185 DEFINE_LRECORD_IMPLEMENTATION ("face-cachel", face_cachel, | |
186 1, /*dumpable-flag*/ | |
187 0, 0, 0, 0, 0, | |
188 face_cachel_description_1, | |
189 Lisp_Face_Cachel); | |
190 #endif /* NEW_GC */ | |
191 | |
1204 | 192 static const struct sized_memory_description face_cachel_description = { |
193 sizeof (face_cachel), | |
194 face_cachel_description_1 | |
195 }; | |
196 | |
197 static const struct memory_description face_cachel_dynarr_description_1[] = { | |
3092 | 198 #ifdef NEW_GC |
199 XD_LISP_DYNARR_DESC (face_cachel_dynarr, &face_cachel_description), | |
200 #else /* not NEW_GC */ | |
1204 | 201 XD_DYNARR_DESC (face_cachel_dynarr, &face_cachel_description), |
3092 | 202 #endif /* not NEW_GC */ |
1204 | 203 { XD_END } |
204 }; | |
205 | |
3092 | 206 #ifdef NEW_GC |
207 DEFINE_LRECORD_IMPLEMENTATION ("face-cachel-dynarr", face_cachel_dynarr, | |
208 1, /*dumpable-flag*/ | |
209 0, 0, 0, 0, 0, | |
210 face_cachel_dynarr_description_1, | |
211 face_cachel_dynarr); | |
212 #else /* not NEW_GC */ | |
1204 | 213 static const struct sized_memory_description face_cachel_dynarr_description = { |
214 sizeof (face_cachel_dynarr), | |
215 face_cachel_dynarr_description_1 | |
216 }; | |
3092 | 217 #endif /* not NEW_GC */ |
1204 | 218 |
219 static const struct memory_description glyph_cachel_description_1[] = { | |
220 { XD_LISP_OBJECT, offsetof (glyph_cachel, glyph) }, | |
221 { XD_END } | |
222 }; | |
223 | |
3092 | 224 #ifdef NEW_GC |
225 DEFINE_LRECORD_IMPLEMENTATION ("glyph-cachel", glyph_cachel, | |
226 1, /*dumpable-flag*/ | |
227 0, 0, 0, 0, 0, | |
228 glyph_cachel_description_1, | |
229 Lisp_Glyph_Cachel); | |
230 #endif /* NEW_GC */ | |
231 | |
1204 | 232 static const struct sized_memory_description glyph_cachel_description = { |
233 sizeof (glyph_cachel), | |
234 glyph_cachel_description_1 | |
235 }; | |
236 | |
237 static const struct memory_description glyph_cachel_dynarr_description_1[] = { | |
3092 | 238 #ifdef NEW_GC |
239 XD_LISP_DYNARR_DESC (glyph_cachel_dynarr, &glyph_cachel_description), | |
240 #else /* not NEW_GC */ | |
1204 | 241 XD_DYNARR_DESC (glyph_cachel_dynarr, &glyph_cachel_description), |
3092 | 242 #endif /* not NEW_GC */ |
1204 | 243 { XD_END } |
244 }; | |
245 | |
3092 | 246 #ifdef NEW_GC |
247 DEFINE_LRECORD_IMPLEMENTATION ("glyph-cachel-dynarr", glyph_cachel_dynarr, | |
248 1, /*dumpable-flag*/ | |
249 0, 0, 0, 0, 0, | |
250 glyph_cachel_dynarr_description_1, | |
251 glyph_cachel_dynarr); | |
252 #else /* not NEW_GC */ | |
1204 | 253 static const struct sized_memory_description glyph_cachel_dynarr_description = { |
254 sizeof (glyph_cachel_dynarr), | |
255 glyph_cachel_dynarr_description_1 | |
256 }; | |
3092 | 257 #endif /* not NEW_GC */ |
1204 | 258 |
259 static const struct memory_description line_start_cache_description_1[] = { | |
260 { XD_END } | |
261 }; | |
262 | |
263 static const struct sized_memory_description line_start_cache_description = { | |
264 sizeof (line_start_cache), | |
265 line_start_cache_description_1 | |
266 }; | |
267 | |
268 static const struct memory_description line_start_cache_dynarr_description_1[] = { | |
269 XD_DYNARR_DESC (line_start_cache_dynarr, &line_start_cache_description), | |
270 { XD_END } | |
271 }; | |
272 | |
273 static const struct sized_memory_description line_start_cache_dynarr_description = { | |
274 sizeof (line_start_cache_dynarr), | |
275 line_start_cache_dynarr_description_1 | |
276 }; | |
277 | |
278 static const struct memory_description window_description [] = { | |
279 #define WINDOW_SLOT(slot) { XD_LISP_OBJECT, offsetof (struct window, slot) }, | |
280 #define WINDOW_SLOT_ARRAY(slot, size) \ | |
281 { XD_LISP_OBJECT_ARRAY, offsetof (struct window, slot), size }, | |
282 #include "winslots.h" | |
283 | |
3092 | 284 #ifdef NEW_GC |
285 { XD_LISP_OBJECT, offsetof (struct window, face_cachels) }, | |
286 { XD_LISP_OBJECT, offsetof (struct window, glyph_cachels) }, | |
287 #else /* not NEW_GC */ | |
2367 | 288 { XD_BLOCK_PTR, offsetof (struct window, face_cachels), |
2551 | 289 1, { &face_cachel_dynarr_description } }, |
2367 | 290 { XD_BLOCK_PTR, offsetof (struct window, glyph_cachels), |
2551 | 291 1, { &glyph_cachel_dynarr_description } }, |
3092 | 292 #endif /* not NEW_GC */ |
2367 | 293 { XD_BLOCK_PTR, offsetof (struct window, line_start_cache), |
2775 | 294 1, { &line_start_cache_dynarr_description }, XD_FLAG_NO_KKCC }, |
1204 | 295 { XD_END } |
296 }; | |
428 | 297 |
298 static Lisp_Object | |
299 mark_window (Lisp_Object obj) | |
300 { | |
301 struct window *window = XWINDOW (obj); | |
302 | |
303 mark_face_cachels (window->face_cachels); | |
304 mark_glyph_cachels (window->glyph_cachels); | |
305 | |
617 | 306 #define WINDOW_SLOT(slot) mark_object (window->slot); |
428 | 307 #include "winslots.h" |
308 | |
309 return Qnil; | |
310 } | |
311 | |
312 static void | |
2286 | 313 print_window (Lisp_Object obj, Lisp_Object printcharfun, |
314 int UNUSED (escapeflag)) | |
428 | 315 { |
316 if (print_readably) | |
563 | 317 printing_unreadable_object ("#<window 0x%x>", XWINDOW (obj)->header.uid); |
428 | 318 |
826 | 319 write_c_string (printcharfun, "#<window"); |
428 | 320 if (!NILP (XWINDOW (obj)->buffer)) |
321 { | |
322 Lisp_Object name = XBUFFER (XWINDOW (obj)->buffer)->name; | |
800 | 323 write_fmt_string_lisp (printcharfun, " on %S", 1, name); |
428 | 324 } |
800 | 325 write_fmt_string (printcharfun, " 0x%x>", XWINDOW (obj)->header.uid); |
428 | 326 } |
327 | |
328 static void | |
2286 | 329 finalize_window (void *header, int UNUSED (for_disksave)) |
428 | 330 { |
331 struct window *w = (struct window *) header; | |
332 | |
333 if (w->line_start_cache) | |
334 { | |
335 Dynarr_free (w->line_start_cache); | |
336 w->line_start_cache = 0; | |
337 } | |
338 | |
339 if (w->face_cachels) | |
340 { | |
341 int i; | |
342 | |
343 for (i = 0; i < Dynarr_length (w->face_cachels); i++) | |
344 { | |
345 struct face_cachel *cachel = Dynarr_atp (w->face_cachels, i); | |
346 if (cachel->merged_faces) | |
347 { | |
348 Dynarr_free (cachel->merged_faces); | |
349 cachel->merged_faces = 0; | |
350 } | |
351 } | |
352 Dynarr_free (w->face_cachels); | |
353 w->face_cachels = 0; | |
354 } | |
355 | |
356 if (w->glyph_cachels) | |
357 { | |
358 Dynarr_free (w->glyph_cachels); | |
359 w->glyph_cachels = 0; | |
360 } | |
361 } | |
362 | |
844 | 363 /* These caches map buffers to markers. They are key-weak so that entries |
364 remain around as long as the buffers do. */ | |
365 | |
366 static Lisp_Object | |
367 make_saved_buffer_point_cache (void) | |
368 { | |
369 return make_lisp_hash_table (20, HASH_TABLE_KEY_WEAK, HASH_TABLE_EQ); | |
370 } | |
371 | |
934 | 372 DEFINE_LRECORD_IMPLEMENTATION ("window", window, |
373 0, /*dumpable-flag*/ | |
374 mark_window, print_window, finalize_window, | |
1204 | 375 0, 0, window_description, struct window); |
428 | 376 |
377 #define INIT_DISP_VARIABLE(field, initialization) \ | |
378 p->field[CURRENT_DISP] = initialization; \ | |
379 p->field[DESIRED_DISP] = initialization; \ | |
380 p->field[CMOTION_DISP] = initialization; | |
381 | |
382 /* We have an implicit assertion that the first two elements (default | |
383 and modeline faces) are always present in the face_element_cache. | |
384 Normally redisplay ensures this. However, it is possible for a | |
385 window to get created and functions which reference these values | |
386 called before redisplay works with the window for the first time. | |
387 All callers of allocate_window should therefore call | |
388 reset_face_cachels on the created window. We can't do it | |
389 here because the window must have its frame pointer set or | |
390 reset_face_cachels will fail. */ | |
391 Lisp_Object | |
392 allocate_window (void) | |
393 { | |
3017 | 394 struct window *p = ALLOC_LCRECORD_TYPE (struct window, &lrecord_window); |
1204 | 395 Lisp_Object val = wrap_window (p); |
617 | 396 |
397 #define WINDOW_SLOT(slot) p->slot = Qnil; | |
398 #include "winslots.h" | |
399 | |
428 | 400 INIT_DISP_VARIABLE (start, Fmake_marker ()); |
401 INIT_DISP_VARIABLE (pointm, Fmake_marker ()); | |
402 p->sb_point = Fmake_marker (); | |
844 | 403 p->saved_point_cache = make_saved_buffer_point_cache (); |
404 p->saved_last_window_start_cache = make_saved_buffer_point_cache (); | |
428 | 405 p->use_time = Qzero; |
406 INIT_DISP_VARIABLE (last_modified, Qzero); | |
407 INIT_DISP_VARIABLE (last_point, Fmake_marker ()); | |
408 INIT_DISP_VARIABLE (last_start, Fmake_marker ()); | |
409 INIT_DISP_VARIABLE (last_facechange, Qzero); | |
3092 | 410 #ifdef NEW_GC |
411 p->face_cachels = Dynarr_lisp_new (face_cachel, | |
412 &lrecord_face_cachel_dynarr, | |
413 &lrecord_face_cachel); | |
414 p->glyph_cachels = Dynarr_lisp_new (glyph_cachel, | |
415 &lrecord_glyph_cachel_dynarr, | |
416 &lrecord_glyph_cachel); | |
417 #else /* not NEW_GC */ | |
428 | 418 p->face_cachels = Dynarr_new (face_cachel); |
419 p->glyph_cachels = Dynarr_new (glyph_cachel); | |
3092 | 420 #endif /* not NEW_GC */ |
428 | 421 p->line_start_cache = Dynarr_new (line_start_cache); |
450 | 422 p->subwindow_instance_cache = make_image_instance_cache_hash_table (); |
423 | |
428 | 424 p->line_cache_last_updated = Qzero; |
442 | 425 |
428 | 426 p->windows_changed = 1; |
427 p->shadow_thickness_changed = 1; | |
428 | |
429 return val; | |
430 } | |
431 #undef INIT_DISP_VARIABLE | |
432 | |
617 | 433 /************************************************************************/ |
434 /* Window mirror structure */ | |
435 /************************************************************************/ | |
436 | |
428 | 437 /* |
438 * The redisplay structures used to be stored with each window. While | |
439 * they are logically something associated with frames they can't be | |
440 * stored there with a redisplay which handles variable height lines. | |
441 * Lines in horizontally split windows might not line up. So they get | |
442 * stored with the windows. | |
443 * | |
444 * The problem with this is window configurations. When restoring a | |
445 * window configuration it now becomes problematic to do an | |
446 * incremental redisplay. The solution is to store the redisplay | |
447 * structures with the frame as they should be but laid out in the | |
448 * same manner as the window structure. Thus is born the window | |
449 * mirror. | |
450 * | |
451 * It also becomes a convenient place to stick scrollbar instances | |
452 * since they extrapolate out to having the same problem described for | |
453 * the display structures. | |
454 */ | |
455 | |
617 | 456 /* NOTE: The window-mirror structure formerly was not a Lisp object, and |
457 marking was handled specially. I've gotten recurring crashes, however, | |
458 using the mouse wheel under Windows, where either the window mirror | |
459 accessed through a scrollbar instance, or the frame pointed to by that | |
460 window mirror, gets garbaged. Things are tricky under windows because | |
461 the scrollbar instances are stored in HWND-specific data. Furthermore, | |
462 we have scrollbar-instance caches to complicate things. Both of these | |
463 make it very difficult (for me at least, not being intimately familiar | |
464 with the redisplay code) to track exactly when and where a particular | |
465 window mirror or scrollbar instance has pointers to it, or whether a | |
466 window mirror might have a dead frame or buffer in it (i.e. not | |
467 necessarily gc-protected by being on a global list). By far the safest | |
468 thing, then, is to make both structures Lisp objects and not explicitly | |
469 xfree() them. This should make no practical difference in memory usage | |
470 because neither structure is created very often (only when windows are | |
471 created or deleted). --ben */ | |
472 | |
1204 | 473 static const struct memory_description window_mirror_description [] = { |
474 { XD_LISP_OBJECT, offsetof (struct window_mirror, frame) }, | |
475 { XD_LISP_OBJECT, offsetof (struct window_mirror, next) }, | |
476 { XD_LISP_OBJECT, offsetof (struct window_mirror, hchild) }, | |
477 { XD_LISP_OBJECT, offsetof (struct window_mirror, vchild) }, | |
478 | |
2367 | 479 { XD_BLOCK_PTR, offsetof (struct window_mirror, current_display_lines), |
2551 | 480 1, { &display_line_dynarr_description } }, |
2367 | 481 { XD_BLOCK_PTR, offsetof (struct window_mirror, desired_display_lines), |
2551 | 482 1, { &display_line_dynarr_description } }, |
1204 | 483 |
484 { XD_LISP_OBJECT, offsetof (struct window_mirror, buffer) }, | |
485 | |
486 #ifdef HAVE_SCROLLBARS | |
487 { XD_LISP_OBJECT, offsetof (struct window_mirror, | |
488 scrollbar_vertical_instance) }, | |
489 { XD_LISP_OBJECT, offsetof (struct window_mirror, | |
490 scrollbar_horizontal_instance) }, | |
491 #endif /* HAVE_SCROLLBARS */ | |
492 | |
934 | 493 { XD_END } |
494 }; | |
495 | |
617 | 496 static Lisp_Object |
497 mark_window_mirror (Lisp_Object obj) | |
498 { | |
499 struct window_mirror *mir = XWINDOW_MIRROR (obj); | |
500 | |
501 if (mir->current_display_lines) | |
502 mark_redisplay_structs (mir->current_display_lines); | |
503 if (mir->desired_display_lines) | |
504 mark_redisplay_structs (mir->desired_display_lines); | |
505 | |
506 if (mir->hchild) | |
507 mark_object (wrap_window_mirror (mir->hchild)); | |
508 if (mir->vchild) | |
509 mark_object (wrap_window_mirror (mir->vchild)); | |
510 | |
511 if (mir->frame) | |
512 mark_object (wrap_frame (mir->frame)); | |
513 if (mir->buffer) | |
514 mark_object (wrap_buffer (mir->buffer)); | |
515 | |
516 #ifdef HAVE_SCROLLBARS | |
517 if (mir->scrollbar_vertical_instance) | |
518 mark_object (wrap_scrollbar_instance (mir->scrollbar_vertical_instance)); | |
519 if (mir->scrollbar_horizontal_instance) | |
520 mark_object (wrap_scrollbar_instance (mir->scrollbar_horizontal_instance)); | |
521 #endif /* HAVE_SCROLLBARS */ | |
522 if (mir->next) | |
523 return wrap_window_mirror (mir->next); | |
524 else | |
525 return Qnil; | |
526 } | |
527 | |
934 | 528 DEFINE_LRECORD_IMPLEMENTATION ("window-mirror", window_mirror, |
529 0, /*dumpable-flag*/ | |
530 mark_window_mirror, internal_object_printer, | |
1204 | 531 0, 0, 0, window_mirror_description, |
532 struct window_mirror); | |
617 | 533 |
428 | 534 /* Create a new window mirror structure and associated redisplay |
535 structs. */ | |
536 static struct window_mirror * | |
537 new_window_mirror (struct frame *f) | |
538 { | |
617 | 539 struct window_mirror *t = |
3017 | 540 ALLOC_LCRECORD_TYPE (struct window_mirror, &lrecord_window_mirror); |
428 | 541 |
542 t->frame = f; | |
543 t->current_display_lines = Dynarr_new (display_line); | |
544 t->desired_display_lines = Dynarr_new (display_line); | |
545 | |
546 return t; | |
547 } | |
548 | |
549 /* Synchronize the mirror structure with a given window structure. | |
550 This is normally called from update_frame_window_mirror with a | |
551 starting window of f->root_window. */ | |
552 static struct window_mirror * | |
553 update_mirror_internal (Lisp_Object win, struct window_mirror *mir) | |
554 { | |
555 if (NILP (win)) | |
556 { | |
557 if (mir) | |
558 { | |
559 free_window_mirror (mir); | |
560 mir = NULL; | |
561 } | |
562 return mir; | |
563 } | |
564 else | |
565 if (!mir) | |
566 mir = new_window_mirror (XFRAME (XWINDOW (win)->frame)); | |
567 | |
1204 | 568 mir->next = update_mirror_internal (XWINDOW (win)->next, mir->next); |
428 | 569 mir->hchild = update_mirror_internal (XWINDOW (win)->hchild, mir->hchild); |
570 mir->vchild = update_mirror_internal (XWINDOW (win)->vchild, mir->vchild); | |
571 | |
572 /* | |
573 * If the redisplay structs are not empty and the mirror has | |
574 * children, then this mirror structure was formerly being used for | |
575 * display but is no longer. Reset its current display structs so | |
576 * that redisplay doesn't accidentally think they are accurate if it | |
577 * is later used for display purposes once again. Also, mark the | |
578 * scrollbar instance as not active. | |
579 */ | |
580 if (mir->vchild || mir->hchild) | |
581 { | |
582 /* The redisplay structures are big. Leaving them around in | |
583 non-leaf windows can add up to a lot of wasted space. So | |
584 don't do it. */ | |
585 free_display_structs (mir); | |
586 mir->current_display_lines = Dynarr_new (display_line); | |
587 mir->desired_display_lines = Dynarr_new (display_line); | |
588 | |
589 #ifdef HAVE_SCROLLBARS | |
590 update_window_scrollbars (XWINDOW (win), mir, 0, 0); | |
591 #endif | |
592 mir->buffer = NULL; | |
593 } | |
594 | |
595 return mir; | |
596 } | |
597 | |
598 /* Given a window mirror, determine which real window it contains the | |
599 redisplay structures for. */ | |
600 static Lisp_Object | |
601 real_window_internal (Lisp_Object win, struct window_mirror *rmir, | |
602 struct window_mirror *mir) | |
603 { | |
604 for (; !NILP (win) && rmir ; win = XWINDOW (win)->next, rmir = rmir->next) | |
605 { | |
606 if (mir == rmir) | |
607 return win; | |
608 if (!NILP (XWINDOW (win)->vchild)) | |
609 { | |
610 Lisp_Object retval = | |
611 real_window_internal (XWINDOW (win)->vchild, rmir->vchild, mir); | |
612 if (!NILP (retval)) | |
613 return retval; | |
614 } | |
615 if (!NILP (XWINDOW (win)->hchild)) | |
616 { | |
617 Lisp_Object retval = | |
618 real_window_internal (XWINDOW (win)->hchild, rmir->hchild, mir); | |
619 if (!NILP (retval)) | |
620 return retval; | |
621 } | |
622 } | |
623 | |
624 return Qnil; | |
625 } | |
626 | |
627 /* Given a real window, find the mirror structure which contains its | |
628 redisplay structures. */ | |
629 static struct window_mirror * | |
630 find_window_mirror_internal (Lisp_Object win, struct window_mirror *rmir, | |
631 struct window *w) | |
632 { | |
633 for (; !NILP (win); win = XWINDOW (win)->next, rmir = rmir->next) | |
634 { | |
635 if (w == XWINDOW (win)) | |
636 return rmir; | |
637 | |
638 if (!NILP (XWINDOW (win)->vchild)) | |
639 { | |
640 struct window_mirror *retval = | |
641 find_window_mirror_internal (XWINDOW (win)->vchild, | |
642 rmir->vchild, w); | |
643 if (retval) return retval; | |
644 } | |
645 | |
646 if (!NILP (XWINDOW (win)->hchild)) | |
647 { | |
648 struct window_mirror *retval = | |
649 find_window_mirror_internal (XWINDOW (win)->hchild, | |
650 rmir->hchild, w); | |
651 if (retval) return retval; | |
652 } | |
653 } | |
654 | |
655 return 0; | |
656 } | |
657 | |
658 /* Update the mirror structure for the given frame. */ | |
659 void | |
660 update_frame_window_mirror (struct frame *f) | |
661 { | |
617 | 662 f->root_mirror = |
663 wrap_window_mirror (update_mirror_internal | |
664 (f->root_window, | |
665 NILP (f->root_mirror) ? 0 : | |
666 XWINDOW_MIRROR (f->root_mirror))); | |
428 | 667 f->mirror_dirty = 0; |
668 } | |
669 | |
670 /* Free a given mirror structure along with all of its children as | |
671 well as their associated display structures. */ | |
672 void | |
673 free_window_mirror (struct window_mirror *mir) | |
674 { | |
675 while (mir) | |
676 { | |
677 if (mir->hchild) free_window_mirror (mir->hchild); | |
678 if (mir->vchild) free_window_mirror (mir->vchild); | |
679 #ifdef HAVE_SCROLLBARS | |
680 release_window_mirror_scrollbars (mir); | |
681 #endif | |
682 free_display_structs (mir); | |
683 mir = mir->next; | |
617 | 684 /* not worth calling free_managed_lcrecord() -- window mirrors |
685 are not created that frequently and it's dangerous. we don't | |
686 know for sure that there aren't other pointers around -- e.g. | |
687 in a scrollbar instance. */ | |
428 | 688 } |
689 } | |
690 | |
691 /* Given a mirror structure, return the window it mirrors. Calls | |
692 real_window_internal to do most of the work. */ | |
693 Lisp_Object | |
694 real_window (struct window_mirror *mir, int no_abort) | |
695 { | |
617 | 696 Lisp_Object retval = |
697 real_window_internal (mir->frame->root_window, | |
698 XWINDOW_MIRROR (mir->frame->root_mirror), mir); | |
428 | 699 if (NILP (retval) && !no_abort) |
2500 | 700 ABORT (); |
428 | 701 |
702 return retval; | |
703 } | |
704 | |
705 /* Given a real window, return its mirror structure. Calls | |
706 find_window_mirror_internal to do all of the work. */ | |
707 struct window_mirror * | |
708 find_window_mirror (struct window *w) | |
709 { | |
710 struct frame *f = XFRAME (w->frame); | |
711 if (f->mirror_dirty) | |
712 update_frame_window_mirror (f); | |
617 | 713 return find_window_mirror_internal (f->root_window, |
714 XWINDOW_MIRROR (f->root_mirror), w); | |
428 | 715 } |
716 | |
717 /***************************************************************************** | |
718 find_window_by_pixel_pos | |
719 | |
720 Given a pixel position relative to a frame, find the window at that | |
721 position. | |
722 ****************************************************************************/ | |
723 struct window * | |
724 find_window_by_pixel_pos (int pix_x, int pix_y, Lisp_Object win) | |
725 { | |
726 if (NILP (win)) | |
727 return 0; | |
728 | |
729 for (; !NILP (win); win = XWINDOW (win)->next) | |
730 { | |
731 struct window *w; | |
732 | |
733 if (!NILP (XWINDOW (win)->vchild)) | |
734 { | |
735 w = find_window_by_pixel_pos (pix_x, pix_y, XWINDOW (win)->vchild); | |
736 if (w) return w; | |
737 } | |
738 if (!NILP (XWINDOW (win)->hchild)) | |
739 { | |
740 w = find_window_by_pixel_pos (pix_x, pix_y, XWINDOW (win)->hchild); | |
741 if (w) return w; | |
742 } | |
743 w = XWINDOW (win); | |
744 if (pix_x >= WINDOW_LEFT (w) | |
745 && pix_x <= WINDOW_RIGHT (w) | |
746 && pix_y >= WINDOW_TOP (w) | |
747 && pix_y <= WINDOW_BOTTOM (w)) | |
748 return w; | |
749 } | |
750 return NULL; | |
751 } | |
752 | |
753 /* Return a pointer to the display structures for the given window. */ | |
754 display_line_dynarr * | |
755 window_display_lines (struct window *w, int which) | |
756 { | |
757 struct window_mirror *t; | |
758 | |
759 if (XFRAME (w->frame)->mirror_dirty) | |
760 update_frame_window_mirror (XFRAME (w->frame)); | |
761 t = find_window_mirror (w); | |
762 if (!t) | |
2500 | 763 ABORT (); |
428 | 764 |
765 if (which == CURRENT_DISP) | |
766 return t->current_display_lines; | |
767 else if (which == DESIRED_DISP) | |
768 return t->desired_display_lines; | |
769 else if (which == CMOTION_DISP) | |
770 /* The CMOTION_DISP display lines are global. */ | |
771 return cmotion_display_lines; | |
772 else | |
2500 | 773 ABORT (); |
428 | 774 |
775 return 0; /* shut up compiler */ | |
776 } | |
777 | |
778 struct buffer * | |
779 window_display_buffer (struct window *w) | |
780 { | |
781 struct window_mirror *t; | |
782 | |
783 if (XFRAME (w->frame)->mirror_dirty) | |
784 update_frame_window_mirror (XFRAME (w->frame)); | |
785 t = find_window_mirror (w); | |
786 if (!t) | |
2500 | 787 ABORT (); |
428 | 788 |
789 return t->buffer; | |
790 } | |
791 | |
792 void | |
793 set_window_display_buffer (struct window *w, struct buffer *b) | |
794 { | |
795 struct window_mirror *t; | |
796 | |
797 if (XFRAME (w->frame)->mirror_dirty) | |
798 update_frame_window_mirror (XFRAME (w->frame)); | |
799 t = find_window_mirror (w); | |
800 if (!t) | |
2500 | 801 ABORT (); |
428 | 802 |
803 t->buffer = b; | |
804 } | |
805 | |
806 | |
807 /* Determining a window's position based solely on its pixel | |
808 positioning doesn't work. Instead, we do it the intelligent way, | |
809 by checking its positioning in the window hierarchy. */ | |
810 int | |
811 window_is_leftmost (struct window *w) | |
812 { | |
813 Lisp_Object parent, current_ancestor, window; | |
814 | |
793 | 815 window = wrap_window (w); |
428 | 816 |
817 parent = XWINDOW (window)->parent; | |
818 current_ancestor = window; | |
819 | |
820 while (!NILP (parent)) | |
821 { | |
822 if (!NILP (XWINDOW (parent)->hchild) && | |
823 !EQ (XWINDOW (parent)->hchild, current_ancestor)) | |
824 return 0; | |
825 | |
826 current_ancestor = parent; | |
827 parent = XWINDOW (parent)->parent; | |
828 } | |
829 | |
830 return 1; | |
831 } | |
832 | |
833 int | |
834 window_is_rightmost (struct window *w) | |
835 { | |
836 Lisp_Object parent, current_ancestor, window; | |
837 | |
793 | 838 window = wrap_window (w); |
428 | 839 |
840 parent = XWINDOW (window)->parent; | |
841 current_ancestor = window; | |
842 | |
843 while (!NILP (parent)) | |
844 { | |
845 if (!NILP (XWINDOW (parent)->hchild) | |
846 && !NILP (XWINDOW (current_ancestor)->next)) | |
847 return 0; | |
848 | |
849 current_ancestor = parent; | |
850 parent = XWINDOW (parent)->parent; | |
851 } | |
852 | |
853 return 1; | |
854 } | |
855 | |
856 static int | |
857 window_full_width_p (struct window *w) | |
858 { | |
859 return window_is_leftmost (w) && window_is_rightmost (w); | |
860 } | |
861 | |
862 int | |
863 window_is_highest (struct window *w) | |
864 { | |
865 Lisp_Object parent, current_ancestor, window; | |
866 | |
793 | 867 window = wrap_window (w); |
428 | 868 |
869 parent = XWINDOW (window)->parent; | |
870 current_ancestor = window; | |
871 | |
872 while (!NILP (parent)) | |
873 { | |
874 if (!NILP (XWINDOW (parent)->vchild) && | |
875 !EQ (XWINDOW (parent)->vchild, current_ancestor)) | |
876 return 0; | |
877 | |
878 current_ancestor = parent; | |
879 parent = XWINDOW (parent)->parent; | |
880 } | |
881 | |
882 /* This is really to catch the minibuffer but we make it generic in | |
883 case we ever change things around to let the minibuffer be on top. */ | |
884 if (NILP (XWINDOW (current_ancestor)->prev)) | |
885 return 1; | |
886 else | |
887 return 0; | |
888 } | |
889 | |
890 int | |
891 window_is_lowest (struct window *w) | |
892 { | |
893 Lisp_Object parent, current_ancestor, window; | |
894 | |
793 | 895 window = wrap_window (w); |
428 | 896 |
897 parent = XWINDOW (window)->parent; | |
898 current_ancestor = window; | |
899 | |
900 while (!NILP (parent)) | |
901 { | |
902 if (!NILP (XWINDOW (parent)->vchild) | |
903 && !NILP (XWINDOW (current_ancestor)->next)) | |
904 return 0; | |
905 | |
906 current_ancestor = parent; | |
907 parent = XWINDOW (parent)->parent; | |
908 } | |
909 | |
910 return 1; | |
911 } | |
912 | |
913 #if 0 /* not currently used */ | |
914 | |
915 static int | |
916 window_full_height_p (struct window *w) | |
917 { | |
918 return window_is_highest (w) && window_is_lowest (w); | |
919 } | |
920 | |
921 #endif | |
922 | |
923 int | |
924 window_truncation_on (struct window *w) | |
925 { | |
926 /* Minibuffer windows are never truncated. | |
440 | 927 #### is this the right way ? */ |
428 | 928 if (MINI_WINDOW_P (w)) |
929 return 0; | |
930 | |
931 /* Horizontally scrolled windows are truncated. */ | |
932 if (w->hscroll) | |
933 return 1; | |
934 | |
935 /* If truncate_partial_width_windows is true and the window is not | |
936 the full width of the frame it is truncated. */ | |
707 | 937 if (!NILP (symbol_value_in_buffer (Qtruncate_partial_width_windows, |
938 w->buffer)) | |
428 | 939 && !(window_is_leftmost (w) && window_is_rightmost (w))) |
940 return 1; | |
941 | |
942 /* If the window's buffer's value of truncate_lines is non-nil, then | |
943 the window is truncated. */ | |
944 if (!NILP (XBUFFER (w->buffer)->truncate_lines)) | |
945 return 1; | |
946 | |
947 return 0; | |
948 } | |
949 | |
950 DEFUN ("window-truncated-p", Fwindow_truncated_p, 0, 1, 0, /* | |
442 | 951 Returns non-nil if text in the window is truncated. |
428 | 952 */ |
953 (window)) | |
954 { | |
955 struct window *w = decode_window (window); | |
956 | |
957 return window_truncation_on (w) ? Qt : Qnil; | |
958 } | |
959 | |
960 | |
961 static int | |
962 have_undivided_common_edge (struct window *w_right, void *closure) | |
963 { | |
964 struct window *w_left = (struct window *) closure; | |
965 return (WINDOW_RIGHT (w_left) == WINDOW_LEFT (w_right) | |
966 && WINDOW_TOP (w_left) < WINDOW_BOTTOM (w_right) | |
967 && WINDOW_TOP (w_right) < WINDOW_BOTTOM (w_left) | |
968 #ifdef HAVE_SCROLLBARS | |
969 && (NILP (w_right->scrollbar_on_left_p) | |
970 || NILP (w_right->vertical_scrollbar_visible_p) | |
971 || ZEROP (w_right->scrollbar_width)) | |
972 #endif | |
973 ); | |
974 } | |
975 | |
976 static int | |
977 window_needs_vertical_divider_1 (struct window *w) | |
978 { | |
979 /* Never if we're on the right */ | |
980 if (window_is_rightmost (w)) | |
981 return 0; | |
982 | |
983 /* Always if draggable */ | |
984 if (!NILP (w->vertical_divider_always_visible_p)) | |
985 return 1; | |
986 | |
987 #ifdef HAVE_SCROLLBARS | |
988 /* Our right scrollbar is enough to separate us at the right */ | |
989 if (NILP (w->scrollbar_on_left_p) | |
990 && !NILP (w->vertical_scrollbar_visible_p) | |
991 && !ZEROP (w->scrollbar_width)) | |
992 return 0; | |
993 #endif | |
994 | |
995 /* Ok. to determine whether we need a divider on the left, we must | |
996 check that our right neighbor windows have scrollbars on their | |
997 left sides. We must check all such windows which have common | |
998 left edge with our window's right edge. */ | |
999 return map_windows (XFRAME (WINDOW_FRAME (w)), | |
1000 have_undivided_common_edge, (void*)w); | |
1001 } | |
1002 | |
1003 int | |
1004 window_needs_vertical_divider (struct window *w) | |
1005 { | |
1006 if (!w->need_vertical_divider_valid_p) | |
1007 { | |
1008 w->need_vertical_divider_p = | |
1009 window_needs_vertical_divider_1 (w); | |
1010 w->need_vertical_divider_valid_p = 1; | |
1011 } | |
1012 return w->need_vertical_divider_p; | |
1013 } | |
1014 | |
1015 /* Called from invalidate_vertical_divider_cache_in_frame */ | |
1016 int | |
1017 invalidate_vertical_divider_cache_in_window (struct window *w, | |
2286 | 1018 void *UNUSED (unused)) |
428 | 1019 { |
1020 w->need_vertical_divider_valid_p = 0; | |
1021 return 0; | |
1022 } | |
1023 | |
1024 /* Calculate width of vertical divider, including its shadows | |
1025 and spacing. The returned value is effectively the distance | |
1026 between adjacent window edges. This function does not check | |
1027 whether a window needs a vertical divider, so the returned | |
1028 value is a "theoretical" one */ | |
1029 int | |
1030 window_divider_width (struct window *w) | |
1031 { | |
1032 /* the shadow thickness can be negative. This means that the divider | |
1033 will have a depressed look */ | |
1034 | |
1035 if (FRAME_WIN_P (XFRAME (WINDOW_FRAME (w)))) | |
1036 return | |
1037 XINT (w->vertical_divider_line_width) | |
1038 + 2 * XINT (w->vertical_divider_spacing) | |
1039 + 2 * abs (XINT (w->vertical_divider_shadow_thickness)); | |
1040 else | |
1041 return XINT (w->vertical_divider_line_width) == 0 ? 0 : 1; | |
1042 } | |
1043 | |
1044 int | |
1045 window_scrollbar_width (struct window *w) | |
1046 { | |
1047 #ifdef HAVE_SCROLLBARS | |
1048 if (!WINDOW_WIN_P (w) | |
1049 || MINI_WINDOW_P (w) | |
1050 || NILP (w->buffer) | |
1051 || NILP (w->vertical_scrollbar_visible_p)) | |
1052 /* #### when does NILP (w->buffer) happen? */ | |
1053 return 0; | |
1054 | |
1055 return XINT (w->scrollbar_width); | |
1056 #else | |
1057 return 0; | |
1058 #endif /* HAVE_SCROLLBARS */ | |
1059 } | |
1060 | |
1061 /* Horizontal scrollbars are only active on windows with truncation | |
1062 turned on. */ | |
1063 int | |
1064 window_scrollbar_height (struct window *w) | |
1065 { | |
1066 #ifdef HAVE_SCROLLBARS | |
1067 if (!WINDOW_WIN_P (w) | |
1068 || MINI_WINDOW_P (w) | |
1069 || NILP (w->buffer) | |
1070 || NILP (w->horizontal_scrollbar_visible_p) | |
1071 || !window_truncation_on (w)) | |
1072 return 0; | |
1073 | |
1074 return XINT (w->scrollbar_height); | |
1075 #else | |
1076 return 0; | |
1077 #endif /* HAVE_SCROLLBARS */ | |
1078 } | |
1079 | |
1080 int | |
1081 window_modeline_height (struct window *w) | |
1082 { | |
1083 struct frame *f = XFRAME (w->frame); | |
1084 int modeline_height; | |
1085 | |
1086 if (MINI_WINDOW_P (w) || NILP (w->buffer)) | |
1087 { | |
1088 modeline_height = 0; | |
1089 } | |
1090 else if (!WINDOW_HAS_MODELINE_P (w)) | |
1091 { | |
1092 if (window_scrollbar_height (w)) | |
1093 modeline_height = 0; | |
1094 else | |
1095 { | |
1096 modeline_height = FRAMEMETH (f, divider_height, ()); | |
1097 | |
1098 if (!EQ (Qzero, w->modeline_shadow_thickness) && FRAME_WIN_P (f)) | |
1099 modeline_height += (2 * MODELINE_SHADOW_THICKNESS (w)); | |
1100 } | |
1101 } | |
1102 else | |
1103 { | |
1104 if (noninteractive) | |
1105 modeline_height = 0; | |
1106 else | |
1107 { | |
1108 display_line_dynarr *dla; | |
1109 | |
1110 /* We don't force a regeneration of the modeline here. | |
1111 Instead it is now a precondition that any function calling | |
1112 this should make sure that one of these structures is | |
1113 up-to-date. In practice this only affects two internal | |
1114 redisplay functions, regenerate_window and | |
1115 regenerate_window_point_center. */ | |
1116 /* We check DESIRED_DISP because if it is valid it is more | |
1117 up-to-date than CURRENT_DISP. For calls to this outside | |
1118 of redisplay it doesn't matter which structure we check | |
1119 since there is a redisplay condition that these | |
1120 structures be identical outside of redisplay. */ | |
1121 dla = window_display_lines (w, DESIRED_DISP); | |
1122 if (dla && Dynarr_length (dla) && Dynarr_atp (dla, 0)->modeline) | |
1123 modeline_height = (Dynarr_atp (dla, 0)->ascent + | |
1124 Dynarr_atp (dla, 0)->descent); | |
1125 else | |
1126 { | |
1127 dla = window_display_lines (w, CURRENT_DISP); | |
1128 if (dla && Dynarr_length (dla) && Dynarr_atp (dla, 0)->modeline) | |
1129 modeline_height = (Dynarr_atp (dla, 0)->ascent + | |
1130 Dynarr_atp (dla, 0)->descent); | |
1131 else | |
1132 /* This should be an abort except I'm not yet 100% | |
1133 confident that it won't ever get hit (though I | |
1134 haven't been able to trigger it). It is extremely | |
1135 unlikely to cause any noticeable problem and even if | |
1136 it does it will be a minor display glitch. */ | |
1137 /* #### Bullshit alert. It does get hit and it causes | |
1138 noticeable glitches. real_current_modeline_height | |
1139 is a kludge to fix this for 19.14. */ | |
1140 modeline_height = real_current_modeline_height (w); | |
1141 } | |
1142 | |
1143 if (!EQ (Qzero, w->modeline_shadow_thickness) && FRAME_WIN_P (f)) | |
1144 modeline_height += (2 * MODELINE_SHADOW_THICKNESS (w)); | |
1145 } | |
1146 } | |
1147 | |
1148 return modeline_height; | |
1149 } | |
1150 | |
1151 /***************************************************************************** | |
1152 margin_width_internal | |
1153 | |
1154 For a given window, return the width in pixels of the specified margin. | |
1155 ****************************************************************************/ | |
1156 static int | |
1157 margin_width_internal (struct window *w, int left_margin) | |
1158 { | |
1159 int window_cwidth = window_char_width (w, 1); | |
1160 int margin_cwidth; | |
1161 int font_width; | |
1162 Lisp_Object window; | |
1163 | |
1164 /* We might be getting called on a non-leaf. */ | |
1165 if (NILP (w->buffer)) | |
1166 return 0; | |
1167 | |
1168 /* The minibuffer never has margins. */ | |
1169 if (MINI_WINDOW_P (w)) | |
1170 return 0; | |
1171 | |
793 | 1172 window = wrap_window (w); |
428 | 1173 margin_cwidth = (left_margin ? XINT (w->left_margin_width) : |
1174 XINT (w->right_margin_width)); | |
1175 | |
1176 default_face_height_and_width (window, 0, &font_width); | |
1177 | |
1178 /* The left margin takes precedence over the right margin so we | |
1179 subtract its width from the space available for the right | |
1180 margin. */ | |
1181 if (!left_margin) | |
1182 window_cwidth -= XINT (w->left_margin_width); | |
1183 | |
1184 /* The margin cannot be wider than the window is. We allow the | |
1185 value to be bigger since it is possible for the user to enlarge | |
1186 the window such that the left margin value would no longer be too | |
1187 big, but we won't return a value that is larger. */ | |
1188 if (margin_cwidth > window_cwidth) | |
1189 margin_cwidth = window_cwidth; | |
1190 | |
1191 /* At the user level the margin is always specified in characters. | |
1192 Internally however it is manipulated in terms of pixels. */ | |
1193 return margin_cwidth * font_width; | |
1194 } | |
1195 | |
1196 int | |
1197 window_left_margin_width (struct window *w) | |
1198 { | |
1199 return margin_width_internal (w, 1); | |
1200 } | |
1201 | |
1202 int | |
1203 window_right_margin_width (struct window *w) | |
1204 { | |
1205 return margin_width_internal (w, 0); | |
1206 } | |
1207 | |
1208 /***************************************************************************** | |
1209 Window Gutters | |
1210 | |
1211 The gutters of a window are those areas in the boundary defined by | |
1212 w->pixel_top, w->pixel_left, w->pixel_height and w->pixel_width which | |
1213 do not contain text. Items which may be in the gutters include | |
1214 scrollbars, toolbars and modelines. The margin areas are not | |
1215 included. This is an exception made because redisplay special cases | |
1216 the handling of those areas in many places in such a way that | |
1217 including them in the gutter area would make life difficult. | |
1218 | |
1219 The size functions refer to height for the bottom and top gutters and | |
1220 width for the left and right gutters. The starting position | |
1221 functions refer to the Y coord for bottom and top gutters and the X | |
1222 coord for left and right gutters. All starting positions are | |
1223 relative to the frame, not the window. | |
1224 ****************************************************************************/ | |
1225 | |
442 | 1226 static int |
1227 window_top_window_gutter_height (struct window *w) | |
1228 { | |
428 | 1229 if (!NILP (w->hchild) || !NILP (w->vchild)) |
1230 return 0; | |
1231 | |
1232 #ifdef HAVE_SCROLLBARS | |
1233 if (!NILP (w->scrollbar_on_top_p)) | |
442 | 1234 return window_scrollbar_height (w); |
428 | 1235 else |
1236 #endif | |
442 | 1237 return 0; |
428 | 1238 } |
1239 | |
1240 int | |
442 | 1241 window_top_gutter_height (struct window *w) |
1242 { | |
1243 return window_top_window_gutter_height (w); | |
1244 } | |
1245 | |
1246 static int | |
1247 window_bottom_window_gutter_height (struct window *w) | |
1248 { | |
1249 int gutter; | |
428 | 1250 |
1251 if (!NILP (w->hchild) || !NILP (w->vchild)) | |
1252 return 0; | |
1253 | |
442 | 1254 gutter = window_modeline_height (w); |
428 | 1255 |
1256 #ifdef HAVE_SCROLLBARS | |
1257 if (NILP (w->scrollbar_on_top_p)) | |
1258 return window_scrollbar_height (w) + gutter; | |
1259 else | |
1260 #endif | |
1261 return gutter; | |
1262 } | |
1263 | |
1264 int | |
442 | 1265 window_bottom_gutter_height (struct window *w) |
1266 { | |
1267 return window_bottom_window_gutter_height (w); | |
1268 } | |
1269 | |
1270 static int | |
1271 window_left_window_gutter_width (struct window *w, int modeline) | |
1272 { | |
428 | 1273 if (!NILP (w->hchild) || !NILP (w->vchild)) |
1274 return 0; | |
1275 | |
1276 #ifdef HAVE_SCROLLBARS | |
1277 if (!modeline && !NILP (w->scrollbar_on_left_p)) | |
442 | 1278 return window_scrollbar_width (w); |
428 | 1279 #endif |
1280 | |
442 | 1281 return 0; |
428 | 1282 } |
1283 | |
1284 int | |
442 | 1285 window_left_gutter_width (struct window *w, int modeline) |
1286 { | |
1287 return window_left_window_gutter_width (w, modeline); | |
1288 } | |
1289 | |
1290 static int | |
1291 window_right_window_gutter_width (struct window *w, int modeline) | |
1292 { | |
1293 int gutter = 0; | |
428 | 1294 |
1295 if (!NILP (w->hchild) || !NILP (w->vchild)) | |
1296 return 0; | |
1297 | |
1298 #ifdef HAVE_SCROLLBARS | |
1299 if (!modeline && NILP (w->scrollbar_on_left_p)) | |
1300 gutter += window_scrollbar_width (w); | |
1301 #endif | |
1302 | |
1303 if (window_needs_vertical_divider (w)) | |
1304 gutter += window_divider_width (w); | |
1305 | |
1306 return gutter; | |
1307 } | |
1308 | |
442 | 1309 int |
1310 window_right_gutter_width (struct window *w, int modeline) | |
1311 { | |
1312 return window_right_window_gutter_width (w, modeline); | |
1313 } | |
1314 | |
1315 static int | |
1316 window_pixel_height (struct window* w) | |
1317 { | |
1318 return WINDOW_HEIGHT (w); | |
1319 } | |
1320 | |
428 | 1321 |
1322 DEFUN ("windowp", Fwindowp, 1, 1, 0, /* | |
444 | 1323 Return t if OBJECT is a window. |
428 | 1324 */ |
444 | 1325 (object)) |
1326 { | |
1327 return WINDOWP (object) ? Qt : Qnil; | |
428 | 1328 } |
1329 | |
1330 DEFUN ("window-live-p", Fwindow_live_p, 1, 1, 0, /* | |
444 | 1331 Return t if OBJECT is a window which is currently visible. |
428 | 1332 */ |
444 | 1333 (object)) |
1334 { | |
1335 return WINDOWP (object) && WINDOW_LIVE_P (XWINDOW (object)) | |
1336 ? Qt : Qnil; | |
428 | 1337 } |
1338 | |
1339 DEFUN ("selected-window", Fselected_window, 0, 1, 0, /* | |
1340 Return the window that the cursor now appears in and commands apply to. | |
1341 If the optional argument CON-DEV-OR-FRAME is specified and is a frame, return | |
1342 the selected window used by that frame. If CON-DEV-OR-FRAME is a device, | |
1343 then the selected frame on that device will be used. If CON-DEV-OR-FRAME | |
1344 is a console, the selected frame on that console's selected device will | |
1345 be used. Otherwise, the selected frame is used. | |
1346 */ | |
1347 (con_dev_or_frame)) | |
1348 { | |
1349 if (NILP (con_dev_or_frame) && NILP (Fselected_device (Qnil))) | |
1350 return Qnil; /* happens at startup */ | |
1351 | |
1352 { | |
1353 struct frame *f = decode_frame_or_selected (con_dev_or_frame); | |
1354 return FRAME_SELECTED_WINDOW (f); | |
1355 } | |
1356 } | |
1357 | |
1358 DEFUN ("last-nonminibuf-window", Flast_nonminibuf_window, 0, 1, 0, /* | |
1359 Return the last selected window that is not a minibuffer window. | |
1360 If the optional argument CON-DEV-OR-FRAME is specified and is a frame, | |
1361 return the last non-minibuffer window used by that frame. If | |
1362 CON-DEV-OR-FRAME is a device, then the selected frame on that device | |
1363 will be used. If CON-DEV-OR-FRAME is a console, the selected frame on | |
1364 that console's selected device will be used. Otherwise, the selected | |
1365 frame is used. | |
1366 */ | |
1367 (con_dev_or_frame)) | |
1368 { | |
1369 if (NILP (con_dev_or_frame) && NILP (Fselected_device (Qnil))) | |
1370 return Qnil; /* happens at startup */ | |
1371 | |
1372 { | |
1373 struct frame *f = decode_frame_or_selected (con_dev_or_frame); | |
1374 return FRAME_LAST_NONMINIBUF_WINDOW (f); | |
1375 } | |
1376 } | |
1377 | |
1378 DEFUN ("minibuffer-window", Fminibuffer_window, 0, 1, 0, /* | |
1379 Return the window used now for minibuffers. | |
1380 If the optional argument CON-DEV-OR-FRAME is specified and is a frame, return | |
1381 the minibuffer window used by that frame. If CON-DEV-OR-FRAME is a device, | |
1382 then the selected frame on that device will be used. If CON-DEV-OR-FRAME | |
1383 is a console, the selected frame on that console's selected device will | |
1384 be used. Otherwise, the selected frame is used. | |
1385 */ | |
1386 (con_dev_or_frame)) | |
1387 { | |
1388 return FRAME_MINIBUF_WINDOW (decode_frame_or_selected (con_dev_or_frame)); | |
1389 } | |
1390 | |
438 | 1391 DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, 0, 1, 0, /* |
428 | 1392 Return non-nil if WINDOW is a minibuffer window. |
1393 */ | |
1394 (window)) | |
1395 { | |
1396 return MINI_WINDOW_P (decode_window (window)) ? Qt : Qnil; | |
1397 } | |
1398 | |
1399 DEFUN ("window-first-hchild", Fwindow_first_hchild, 1, 1, 0, /* | |
1400 Return the first horizontal child of WINDOW, or nil. | |
1401 */ | |
1402 (window)) | |
1403 { | |
1404 return decode_window (window)->hchild; | |
1405 } | |
1406 | |
1407 DEFUN ("window-first-vchild", Fwindow_first_vchild, 1, 1, 0, /* | |
1408 Return the first vertical child of WINDOW, or nil. | |
1409 */ | |
1410 (window)) | |
1411 { | |
1412 return decode_window (window)->vchild; | |
1413 } | |
1414 | |
1415 DEFUN ("window-next-child", Fwindow_next_child, 1, 1, 0, /* | |
1416 Return the next window on the same level as WINDOW, or nil. | |
1417 */ | |
1418 (window)) | |
1419 { | |
1420 return decode_window (window)->next; | |
1421 } | |
1422 | |
1423 DEFUN ("window-previous-child", Fwindow_previous_child, 1, 1, 0, /* | |
1424 Return the previous window on the same level as WINDOW, or nil. | |
1425 */ | |
1426 (window)) | |
1427 { | |
1428 return decode_window (window)->prev; | |
1429 } | |
1430 | |
1431 DEFUN ("window-parent", Fwindow_parent, 1, 1, 0, /* | |
1432 Return the parent of WINDOW, or nil. | |
1433 */ | |
1434 (window)) | |
1435 { | |
1436 return decode_window (window)->parent; | |
1437 } | |
1438 | |
1439 DEFUN ("window-lowest-p", Fwindow_lowest_p, 1, 1, 0, /* | |
1440 Return non-nil if WINDOW is along the bottom of its frame. | |
1441 */ | |
1442 (window)) | |
1443 { | |
1444 return window_is_lowest (decode_window (window)) ? Qt : Qnil; | |
1445 } | |
1446 | |
1447 DEFUN ("window-highest-p", Fwindow_highest_p, 1, 1, 0, /* | |
1448 Return non-nil if WINDOW is along the top of its frame. | |
1449 */ | |
1450 (window)) | |
1451 { | |
1452 return window_is_highest (decode_window (window)) ? Qt : Qnil; | |
1453 } | |
1454 | |
1455 DEFUN ("window-leftmost-p", Fwindow_leftmost_p, 1, 1, 0, /* | |
1456 Return non-nil if WINDOW is along the left edge of its frame. | |
1457 */ | |
1458 (window)) | |
1459 { | |
1460 return window_is_leftmost (decode_window (window)) ? Qt : Qnil; | |
1461 } | |
1462 | |
1463 DEFUN ("window-rightmost-p", Fwindow_rightmost_p, 1, 1, 0, /* | |
1464 Return non-nil if WINDOW is along the right edge of its frame. | |
1465 */ | |
1466 (window)) | |
1467 { | |
1468 return window_is_rightmost (decode_window (window)) ? Qt : Qnil; | |
1469 } | |
1470 | |
1708 | 1471 DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, 0, 3, 0, /* |
1472 Returns t if position POS is currently on the frame in WINDOW. | |
428 | 1473 Returns nil if that position is scrolled vertically out of view. |
1708 | 1474 If a character is only partially visible, nil is returned, unless the |
1475 optional argument PARTIALLY is non-nil. | |
428 | 1476 POS defaults to point in WINDOW's buffer; WINDOW, to the selected window. |
1477 */ | |
1708 | 1478 (pos, window, partially)) |
428 | 1479 { |
1480 struct window *w = decode_window (window); | |
665 | 1481 Charbpos top = marker_position (w->start[CURRENT_DISP]); |
1482 Charbpos posint; | |
428 | 1483 struct buffer *buf = XBUFFER (w->buffer); |
1484 | |
1485 if (NILP (pos)) | |
1486 posint = BUF_PT (buf); | |
1487 else | |
1488 { | |
1489 CHECK_INT_COERCE_MARKER (pos); | |
1490 posint = XINT (pos); | |
1491 } | |
1492 | |
1493 if (posint < top || posint > BUF_ZV (buf)) | |
1494 return Qnil; | |
1495 | |
1496 /* w->start can be out of range. If it is, do something reasonable. */ | |
1497 if (top < BUF_BEGV (buf) || top > BUF_ZV (buf)) | |
1498 return Qnil; | |
1499 | |
1708 | 1500 return point_would_be_visible (w, top, posint, !NILP (partially)) |
1501 ? Qt : Qnil; | |
428 | 1502 } |
1503 | |
1504 | |
1505 struct window * | |
1506 decode_window (Lisp_Object window) | |
1507 { | |
1508 if (NILP (window)) | |
1509 return XWINDOW (Fselected_window (Qnil)); | |
1510 | |
1511 CHECK_LIVE_WINDOW (window); | |
1512 return XWINDOW (window); | |
1513 } | |
1514 | |
872 | 1515 int |
1516 window_live_p (struct window *w) | |
1517 { | |
1518 return WINDOW_LIVE_P (w); | |
1519 } | |
1520 | |
1521 Lisp_Object | |
1522 window_frame (struct window *w) | |
1523 { | |
1524 return WINDOW_FRAME (w); | |
1525 } | |
1526 | |
1527 Lisp_Object | |
1528 window_buffer (struct window *w) | |
1529 { | |
1530 return WINDOW_BUFFER (w); | |
1531 } | |
1532 | |
428 | 1533 DEFUN ("window-buffer", Fwindow_buffer, 0, 1, 0, /* |
1534 Return the buffer that WINDOW is displaying. | |
1535 */ | |
1536 (window)) | |
1537 { | |
1538 return decode_window (window)->buffer; | |
1539 } | |
1540 | |
1541 DEFUN ("window-frame", Fwindow_frame, 0, 1, 0, /* | |
1542 Return the frame that window WINDOW is on. | |
1543 */ | |
1544 (window)) | |
1545 { | |
1546 return decode_window (window)->frame; | |
1547 } | |
1548 | |
1549 DEFUN ("window-height", Fwindow_height, 0, 1, 0, /* | |
1550 Return the number of default lines in WINDOW. | |
1551 This actually works by dividing the window's pixel height (including | |
1552 the modeline and horizontal scrollbar, if any) by the height of the | |
1553 default font; therefore, the number of displayed lines will probably | |
1554 be different. | |
1555 Use `window-height' to get consistent results in geometry calculations. | |
1556 Use `window-displayed-height' to get the actual number of lines | |
1557 currently displayed in a window. | |
442 | 1558 |
1559 The names are somewhat confusing; here's a table to help out: | |
1560 | |
1561 width height | |
1562 ------------------------------------------------------------------------- | |
1563 w/o gutters | |
1564 (rows/columns) window-width window-text-area-height | |
1565 (pixels) window-text-area-pixel-width window-text-area-pixel-height | |
1566 | |
1567 with gutters | |
1568 (rows/columns) window-full-width window-height | |
1569 (pixels) window-pixel-width window-pixel-height | |
1570 | |
1571 actually displayed | |
1572 (rows/columns) ---- window-displayed-height | |
1573 (pixels) ---- window-displayed-text-pixel-height | |
428 | 1574 */ |
1575 (window)) | |
1576 { | |
1577 return make_int (window_char_height (decode_window (window), 1)); | |
1578 } | |
1579 | |
1580 DEFUN ("window-displayed-height", Fwindow_displayed_height, 0, 1, 0, /* | |
1581 Return the number of lines currently displayed in WINDOW. | |
1582 This counts the actual number of lines displayed in WINDOW | |
1583 \(as opposed to `window-height'). The modeline and horizontal | |
1584 scrollbar do not count as lines. If there is some blank space | |
1585 between the end of the buffer and the end of the window, this | |
1586 function pretends that there are lines of text in the default | |
1587 font there. | |
1588 */ | |
1589 (window)) | |
1590 { | |
1591 return make_int (window_displayed_height (decode_window (window))); | |
1592 } | |
1593 | |
1594 DEFUN ("window-pixel-height", Fwindow_pixel_height, 0, 1, 0, /* | |
1595 Return the height of WINDOW in pixels. Defaults to current window. | |
1596 This includes the window's modeline and horizontal scrollbar (if any). | |
1597 */ | |
1598 (window)) | |
1599 { | |
442 | 1600 return make_int (window_pixel_height (decode_window (window))); |
1601 } | |
1602 | |
1603 DEFUN ("window-text-area-height", Fwindow_text_area_height, 0, 1, 0, /* | |
1604 Return the number of default lines in the text area of WINDOW. | |
1605 This actually works by dividing the window's text area pixel height (i.e. | |
1606 excluding the modeline and horizontal scrollbar, if any) by the height of the | |
1607 default font; therefore, the number of displayed lines will probably | |
1608 be different. | |
1609 See also `window-height' and `window-displayed-height'. | |
1610 */ | |
1611 (window)) | |
1612 { | |
1613 return make_int (window_char_height (decode_window (window), 0)); | |
428 | 1614 } |
1615 | |
1616 DEFUN ("window-text-area-pixel-height", | |
1617 Fwindow_text_area_pixel_height, 0, 1, 0, /* | |
1618 Return the height in pixels of the text-displaying portion of WINDOW. | |
1619 Unlike `window-pixel-height', the space occupied by the modeline and | |
1620 horizontal scrollbar, if any, is not counted. | |
1621 */ | |
1622 (window)) | |
1623 { | |
1624 struct window *w = decode_window (window); | |
1625 | |
1626 return make_int (WINDOW_TEXT_HEIGHT (w)); | |
1627 } | |
1628 | |
1629 DEFUN ("window-displayed-text-pixel-height", | |
1630 Fwindow_displayed_text_pixel_height, 0, 2, 0, /* | |
1631 Return the height in pixels of the text displayed in WINDOW. | |
1632 Unlike `window-text-area-pixel-height', any blank space below the | |
1633 end of the buffer is not included. If optional argument NOCLIPPED | |
1634 is non-nil, do not include space occupied by clipped lines. | |
1635 */ | |
1636 (window, noclipped)) | |
1637 { | |
1638 struct window *w; | |
665 | 1639 Charbpos start, eobuf; |
428 | 1640 int defheight; |
1641 int hlimit, height, prev_height = -1; | |
1642 int line; | |
1643 int elt, nelt, i; | |
1644 int needed; | |
1645 line_start_cache_dynarr *cache; | |
1646 | |
1647 if (NILP (window)) | |
1648 window = Fselected_window (Qnil); | |
1649 | |
1650 CHECK_LIVE_WINDOW (window); | |
1651 w = XWINDOW (window); | |
1652 | |
1653 start = marker_position (w->start[CURRENT_DISP]); | |
1654 hlimit = WINDOW_TEXT_HEIGHT (w); | |
1655 eobuf = BUF_ZV (XBUFFER (w->buffer)); | |
1656 | |
1657 default_face_height_and_width (window, &defheight, NULL); | |
1658 | |
1659 /* guess lines needed in line start cache + a few extra */ | |
1660 needed = (hlimit + defheight-1) / defheight + 3; | |
1661 | |
1662 while (1) { | |
1663 elt = point_in_line_start_cache (w, start, needed); | |
1664 assert (elt >= 0); /* in the cache */ | |
1665 | |
1666 cache = w->line_start_cache; | |
1667 nelt = Dynarr_length (cache); | |
1668 | |
1669 height = 0; | |
1670 for (i = elt; i < nelt; i++) { | |
1671 line = Dynarr_atp (cache, i)->height; | |
1672 | |
1673 if (height + line > hlimit) | |
1674 return make_int (!NILP (noclipped) ? height : hlimit); | |
1675 | |
1676 height += line; | |
1677 | |
1678 if (height == hlimit || Dynarr_atp (cache, i)->end >= eobuf) | |
1679 return make_int (height); | |
1680 } | |
1681 | |
1682 /* get here => need more cache lines. try again. */ | |
1683 assert(height > prev_height); /* progress? */ | |
1684 prev_height = height; | |
1685 | |
1686 needed += ((hlimit - height)*(nelt - elt) + height-1)/height + 3; | |
1687 } | |
1688 | |
1204 | 1689 RETURN_NOT_REACHED(make_int (0)); /* shut up compiler */ |
428 | 1690 } |
1691 | |
1692 DEFUN ("window-width", Fwindow_width, 0, 1, 0, /* | |
1693 Return the number of display columns in WINDOW. | |
442 | 1694 This is the width that is usable columns available for text in WINDOW, |
1695 and does not include vertical scrollbars, dividers, or the like. See also | |
1696 `window-full-width' and `window-height'. | |
428 | 1697 */ |
1698 (window)) | |
1699 { | |
1700 return make_int (window_char_width (decode_window (window), 0)); | |
1701 } | |
1702 | |
442 | 1703 DEFUN ("window-full-width", Fwindow_full_width, 0, 1, 0, /* |
1704 Return the total number of columns in WINDOW. | |
1705 This is like `window-width' but includes vertical scrollbars, dividers, | |
1706 etc. | |
1707 */ | |
1708 (window)) | |
1709 { | |
1710 return make_int (window_char_width (decode_window (window), 1)); | |
1711 } | |
1712 | |
428 | 1713 DEFUN ("window-pixel-width", Fwindow_pixel_width, 0, 1, 0, /* |
1714 Return the width of WINDOW in pixels. Defaults to current window. | |
1715 */ | |
1716 (window)) | |
1717 { | |
1718 return make_int (decode_window (window)->pixel_width); | |
1719 } | |
1720 | |
1721 DEFUN ("window-text-area-pixel-width", | |
1722 Fwindow_text_area_pixel_width, 0, 1, 0, /* | |
1723 Return the width in pixels of the text-displaying portion of WINDOW. | |
1724 Unlike `window-pixel-width', the space occupied by the vertical | |
1725 scrollbar or divider, if any, is not counted. | |
1726 */ | |
1727 (window)) | |
1728 { | |
1729 struct window *w = decode_window (window); | |
1730 | |
1731 return make_int (WINDOW_TEXT_WIDTH (w)); | |
1732 } | |
1733 | |
1734 DEFUN ("window-hscroll", Fwindow_hscroll, 0, 1, 0, /* | |
1735 Return the number of columns by which WINDOW is scrolled from left margin. | |
1736 */ | |
1737 (window)) | |
1738 { | |
1739 return make_int (decode_window (window)->hscroll); | |
1740 } | |
1741 | |
1742 DEFUN ("modeline-hscroll", Fmodeline_hscroll, 0, 1, 0, /* | |
442 | 1743 Return the horizontal scrolling amount of WINDOW's modeline. |
438 | 1744 If the window has no modeline, return nil. |
428 | 1745 */ |
1746 (window)) | |
1747 { | |
1748 struct window *w = decode_window (window); | |
1749 | |
438 | 1750 return (WINDOW_HAS_MODELINE_P (w)) ? make_int ((int) w->modeline_hscroll) : |
1751 Qnil; | |
428 | 1752 } |
1753 | |
1754 DEFUN ("set-modeline-hscroll", Fset_modeline_hscroll, 2, 2, 0, /* | |
442 | 1755 Set the horizontal scrolling amount of WINDOW's modeline to NCOL. |
438 | 1756 If NCOL is negative, it will silently be forced to 0. |
1757 If the window has no modeline, return nil. Otherwise, return the actual | |
1758 value that was set. | |
428 | 1759 */ |
1760 (window, ncol)) | |
1761 { | |
1762 struct window *w = decode_window (window); | |
1763 | |
1764 if (WINDOW_HAS_MODELINE_P (w)) | |
1765 { | |
438 | 1766 Charcount ncols; |
1767 | |
428 | 1768 CHECK_INT (ncol); |
438 | 1769 ncols = (XINT (ncol) <= 0) ? 0 : (Charcount) XINT (ncol); |
1770 if (ncols != w->modeline_hscroll) | |
1771 { | |
1772 MARK_MODELINE_CHANGED; | |
1773 w->modeline_hscroll = ncols; | |
1774 } | |
1775 return make_int ((int) ncols); | |
428 | 1776 } |
438 | 1777 |
428 | 1778 return Qnil; |
1779 } | |
1780 | |
1781 DEFUN ("set-window-hscroll", Fset_window_hscroll, 2, 2, 0, /* | |
1782 Set number of columns WINDOW is scrolled from left margin to NCOL. | |
1783 NCOL should be zero or positive. | |
1784 */ | |
1785 (window, ncol)) | |
1786 { | |
1787 struct window *w; | |
1788 int ncols; | |
1789 | |
1790 CHECK_INT (ncol); | |
1791 ncols = XINT (ncol); | |
1792 if (ncols < 0) ncols = 0; | |
1793 w = decode_window (window); | |
1794 if (w->hscroll != ncols) | |
1795 MARK_CLIP_CHANGED; /* FSF marks differently but we aren't FSF. */ | |
1796 w->hscroll = ncols; | |
1797 return ncol; | |
1798 } | |
1799 | |
1800 DEFUN ("window-pixel-edges", Fwindow_pixel_edges, 0, 1, 0, /* | |
1801 Return a list of the pixel edge coordinates of WINDOW. | |
444 | 1802 The returned list is of the form (LEFT TOP RIGHT BOTTOM), |
1803 all relative to 0, 0 at the top left corner of WINDOW's frame. | |
1804 The frame toolbars, menubars and gutters are considered to be outside | |
1805 of this area, while the scrollbars are considered to be inside. | |
428 | 1806 */ |
1807 (window)) | |
1808 { | |
1809 struct window *w = decode_window (window); | |
1810 struct frame *f = XFRAME (w->frame); | |
1811 | |
442 | 1812 int left = |
1813 w->pixel_left - FRAME_LEFT_BORDER_END (f) - FRAME_LEFT_GUTTER_BOUNDS (f); | |
1814 int top = | |
1815 w->pixel_top - FRAME_TOP_BORDER_END (f) - FRAME_TOP_GUTTER_BOUNDS (f); | |
428 | 1816 |
1817 return list4 (make_int (left), | |
1818 make_int (top), | |
1819 make_int (left + w->pixel_width), | |
1820 make_int (top + w->pixel_height)); | |
1821 } | |
1822 | |
1823 DEFUN ("window-text-area-pixel-edges", | |
1824 Fwindow_text_area_pixel_edges, 0, 1, 0, /* | |
1825 Return a list of the pixel edge coordinates of the text area of WINDOW. | |
444 | 1826 The returned list is of the form (LEFT TOP RIGHT BOTTOM), |
1827 all relative to 0, 0 at the top left corner of the total area allocated | |
1828 to the window, which includes the scrollbars. | |
428 | 1829 */ |
1830 (window)) | |
1831 { | |
1832 struct window *w = decode_window (window); | |
1833 | |
1834 int left = window_left_gutter_width (w, /* modeline = */ 0); | |
1835 int top = window_top_gutter_height (w); | |
1836 int right = WINDOW_WIDTH (w) - window_right_gutter_width (w, 0); | |
1837 int bottom = WINDOW_HEIGHT (w) - window_bottom_gutter_height (w); | |
1838 | |
1839 return list4 (make_int (left), | |
1840 make_int (top), | |
1841 make_int (right), | |
1842 make_int (bottom)); | |
1843 } | |
1844 | |
1845 DEFUN ("window-point", Fwindow_point, 0, 1, 0, /* | |
1846 Return current value of point in WINDOW. | |
442 | 1847 For a non-selected window, this is the value point would have |
428 | 1848 if that window were selected. |
1849 | |
1850 Note that, when WINDOW is the selected window and its buffer | |
1851 is also currently selected, the value returned is the same as (point). | |
1852 It would be more strictly correct to return the `top-level' value | |
1853 of point, outside of any save-excursion forms. | |
444 | 1854 But that value is hard to find. |
428 | 1855 */ |
1856 (window)) | |
1857 { | |
1858 struct window *w = decode_window (window); | |
1859 | |
1860 /* The special check for current buffer is necessary for this | |
1861 function to work as defined when called within an excursion. */ | |
1862 if (w == XWINDOW (Fselected_window (XFRAME (w->frame)->device)) | |
1863 && current_buffer == XBUFFER (w->buffer)) | |
1864 return Fpoint (Qnil); | |
1865 return Fmarker_position (w->pointm[CURRENT_DISP]); | |
1866 } | |
1867 | |
1868 DEFUN ("window-start", Fwindow_start, 0, 1, 0, /* | |
1869 Return position at which display currently starts in WINDOW. | |
1870 This is updated by redisplay or by calling `set-window-start'. | |
1871 */ | |
1872 (window)) | |
1873 { | |
1874 return Fmarker_position (decode_window (window)->start[CURRENT_DISP]); | |
1875 } | |
1876 | |
1877 DEFUN ("window-end", Fwindow_end, 0, 2, 0, /* | |
1878 Return position at which display currently ends in WINDOW. | |
1879 This is updated by redisplay, when it runs to completion. | |
444 | 1880 Simply changing the buffer text or setting `window-start' does not |
1881 update this value. WINDOW defaults to the selected window. | |
1882 | |
1883 If optional arg GUARANTEE is non-nil, the return value is guaranteed | |
1884 to be the same value as this function would return at the end of the | |
1885 next full redisplay assuming nothing else changes in the meantime. | |
1886 This function is potentially much slower with this flag set. | |
428 | 1887 */ |
1888 (window, guarantee)) | |
1889 { | |
1890 struct window *w = decode_window (window); | |
1891 | |
1892 if (NILP (guarantee)) | |
1893 { | |
1894 Lisp_Object buf; | |
1895 buf = w->buffer; | |
1896 CHECK_BUFFER (buf); | |
1897 return make_int (BUF_Z (XBUFFER (buf)) - w->window_end_pos[CURRENT_DISP]); | |
1898 } | |
1899 else | |
1900 { | |
665 | 1901 Charbpos startp = marker_position (w->start[CURRENT_DISP]); |
428 | 1902 return make_int (end_of_last_line (w, startp)); |
1903 } | |
1904 } | |
1905 | |
442 | 1906 DEFUN ("window-last-line-visible-height", Fwindow_last_line_visible_height, 0, 1, 0, /* |
1907 Return pixel height of visible part of last window line if it is clipped. | |
1908 If the last line is not clipped, return nil. | |
1909 */ | |
1910 (window)) | |
1911 { | |
1912 struct window *w = decode_window (window); | |
1913 display_line_dynarr *dla = window_display_lines (w, CURRENT_DISP); | |
1914 int num_lines = Dynarr_length (dla); | |
1915 struct display_line *dl; | |
1916 | |
1917 /* No lines - no clipped lines */ | |
1918 if (num_lines == 0 || (num_lines == 1 && Dynarr_atp (dla, 0)->modeline)) | |
1919 return Qnil; | |
1920 | |
1921 dl = Dynarr_atp (dla, num_lines - 1); | |
1922 if (dl->clip == 0) | |
1923 return Qnil; | |
1924 | |
1925 return make_int (dl->ascent + dl->descent - dl->clip); | |
1926 } | |
1927 | |
428 | 1928 DEFUN ("set-window-point", Fset_window_point, 2, 2, 0, /* |
1929 Make point value in WINDOW be at position POS in WINDOW's buffer. | |
1161 | 1930 If WINDOW is the selected window, and window's buffer is the current |
1931 buffer, this actually changes the buffer's point instead of the window's | |
1932 point. (The equivalence of the selected window's point with its buffer's | |
1933 point is maintained throughout XEmacs. However, enforcing the additional | |
1934 restriction on the current buffer is "bug compatible" with FSF and is | |
1935 perhaps more logical.) | |
428 | 1936 */ |
1937 (window, pos)) | |
1938 { | |
1939 struct window *w = decode_window (window); | |
1940 | |
1941 CHECK_INT_COERCE_MARKER (pos); | |
1161 | 1942 |
844 | 1943 /* Don't dereference selected-window because there may not |
1944 be one -- e.g. at startup */ | |
1161 | 1945 if (EQ (wrap_window (w), Fselected_window (Qnil)) |
1946 && EQ (w->buffer, Fcurrent_buffer ())) | |
1947 Fgoto_char (pos, Qnil); | |
428 | 1948 else |
1949 set_marker_restricted (w->pointm[CURRENT_DISP], pos, w->buffer); | |
1950 | |
1951 MARK_POINT_CHANGED; | |
1952 return pos; | |
1953 } | |
1954 | |
1955 DEFUN ("set-window-start", Fset_window_start, 2, 3, 0, /* | |
1956 Make display in WINDOW start at position POS in WINDOW's buffer. | |
1957 Optional third arg NOFORCE non-nil inhibits next redisplay | |
1958 from overriding motion of point in order to display at this exact start. | |
1959 */ | |
1960 (window, pos, noforce)) | |
1961 { | |
1962 struct window *w = decode_window (window); | |
1963 | |
1964 CHECK_INT_COERCE_MARKER (pos); | |
1965 set_marker_restricted (w->start[CURRENT_DISP], pos, w->buffer); | |
1966 /* this is not right, but much easier than doing what is right. */ | |
1967 /* w->start_at_line_beg = 0; */ | |
1968 /* WTF is the above supposed to mean? GE */ | |
1969 w->start_at_line_beg = beginning_of_line_p (XBUFFER (w->buffer), | |
1970 marker_position (w->start[CURRENT_DISP])); | |
1971 if (NILP (noforce)) | |
1972 w->force_start = 1; | |
1973 w->redo_modeline = 1; | |
1974 SET_LAST_MODIFIED (w, 0); | |
1975 SET_LAST_FACECHANGE (w); | |
1976 | |
1977 MARK_WINDOWS_CHANGED (w); | |
1978 | |
1979 return pos; | |
1980 } | |
1981 | |
1982 DEFUN ("window-dedicated-p", Fwindow_dedicated_p, 1, 1, 0, /* | |
1983 Return WINDOW's dedicated object, usually t or nil. | |
1984 See also `set-window-dedicated-p'. | |
1985 */ | |
1986 (window)) | |
1987 { | |
1988 return decode_window (window)->dedicated; | |
1989 } | |
1990 | |
1991 DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, 2, 2, 0, /* | |
1992 Control whether WINDOW is dedicated to the buffer it displays. | |
1993 If it is dedicated, Emacs will not automatically change | |
1994 which buffer appears in it. | |
1995 The second argument is the new value for the dedication flag; | |
1996 non-nil means yes. | |
1997 */ | |
1998 (window, arg)) | |
1999 { | |
2000 struct window *w = decode_window (window); | |
2001 | |
2002 w->dedicated = NILP (arg) ? Qnil : Qt; | |
2003 | |
2004 return w->dedicated; | |
2005 } | |
2006 | |
2007 /* FSFmacs has window-display-table here. We have display table as a | |
2008 specifier. */ | |
2009 | |
2010 | |
2011 /* Record info on buffer window w is displaying | |
2012 when it is about to cease to display that buffer. */ | |
2013 static void | |
2014 unshow_buffer (struct window *w) | |
2015 { | |
2016 Lisp_Object buf = w->buffer; | |
844 | 2017 struct buffer *b = XBUFFER (buf); |
2018 | |
2019 if (b != XMARKER (w->pointm[CURRENT_DISP])->buffer) | |
2500 | 2020 ABORT (); |
428 | 2021 |
2022 /* FSF disables this check, so I'll do it too. I hope it won't | |
2023 break things. --ben */ | |
2024 #if 0 | |
2025 if (w == XWINDOW (Fselected_window (Qnil)) | |
2026 || ! EQ (buf, XWINDOW (Fselected_window (Qnil))->buffer)) | |
2027 /* Do this except when the selected window's buffer | |
2028 is being removed from some other window. */ | |
2029 #endif | |
2030 /* last_window_start records the start position that this buffer | |
2031 had in the last window to be disconnected from it. | |
2032 Now that this statement is unconditional, | |
2033 it is possible for the buffer to be displayed in the | |
2034 selected window, while last_window_start reflects another | |
2035 window which was recently showing the same buffer. | |
2036 Some people might say that might be a good thing. Let's see. */ | |
2037 XBUFFER (buf)->last_window_start = | |
2038 marker_position (w->start[CURRENT_DISP]); | |
2039 | |
2040 /* Point in the selected window's buffer | |
2041 is actually stored in that buffer, and the window's pointm isn't used. | |
2042 So don't clobber point in that buffer. */ | |
2043 if (! EQ (buf, XWINDOW (Fselected_window (Qnil))->buffer)) | |
844 | 2044 BUF_SET_PT (b, |
2045 charbpos_clip_to_bounds | |
2046 (BUF_BEGV (b), | |
2047 marker_position (w->pointm[CURRENT_DISP]), | |
2048 BUF_ZV (b))); | |
2049 | |
2050 { | |
2051 Lisp_Object marker = Fgethash (buf, w->saved_point_cache, Qnil); | |
2052 int selected = EQ (wrap_window (w), Fselected_window (Qnil)); | |
2053 | |
2054 if (NILP (marker)) | |
2055 { | |
2056 marker = Fmake_marker (); | |
2057 Fputhash (buf, marker, w->saved_point_cache); | |
2058 } | |
2059 Fset_marker (marker, | |
2060 selected ? make_int (BUF_PT (b)) : w->pointm[CURRENT_DISP], | |
2061 buf); | |
2062 | |
2063 marker = Fgethash (buf, w->saved_last_window_start_cache, Qnil); | |
2064 | |
2065 if (NILP (marker)) | |
2066 { | |
2067 marker = Fmake_marker (); | |
2068 Fputhash (buf, marker, w->saved_last_window_start_cache); | |
2069 } | |
2070 Fset_marker (marker, w->start[CURRENT_DISP], buf); | |
2071 } | |
428 | 2072 } |
2073 | |
2074 /* Put REPLACEMENT into the window structure in place of OLD. */ | |
2075 static void | |
2076 replace_window (Lisp_Object old, Lisp_Object replacement) | |
2077 { | |
2078 Lisp_Object tem; | |
2079 struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
2080 | |
2081 /* If OLD is its frame's root_window, then replacement is the new | |
2082 root_window for that frame. */ | |
2083 | |
2084 if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) | |
2085 FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; | |
2086 | |
2087 WINDOW_LEFT (p) = WINDOW_LEFT (o); | |
2088 WINDOW_TOP (p) = WINDOW_TOP (o); | |
2089 WINDOW_WIDTH (p) = WINDOW_WIDTH (o); | |
2090 WINDOW_HEIGHT (p) = WINDOW_HEIGHT (o); | |
2091 | |
2092 p->next = tem = o->next; | |
2093 if (!NILP (tem)) | |
2094 XWINDOW (tem)->prev = replacement; | |
2095 | |
2096 p->prev = tem = o->prev; | |
2097 if (!NILP (tem)) | |
2098 XWINDOW (tem)->next = replacement; | |
2099 | |
2100 p->parent = tem = o->parent; | |
2101 if (!NILP (tem)) | |
2102 { | |
2103 if (EQ (XWINDOW (tem)->vchild, old)) | |
2104 XWINDOW (tem)->vchild = replacement; | |
2105 if (EQ (XWINDOW (tem)->hchild, old)) | |
2106 XWINDOW (tem)->hchild = replacement; | |
2107 } | |
2108 | |
2109 /* #### Here, if replacement is a vertical combination | |
2110 and so is its new parent, we should make replacement's | |
2111 children be children of that parent instead. */ | |
442 | 2112 |
2113 ERROR_CHECK_SUBWINDOW_CACHE (p); | |
2114 } | |
2115 | |
2116 static void | |
2117 window_unmap_subwindows (struct window* w) | |
2118 { | |
2119 assert (!NILP (w->subwindow_instance_cache)); | |
2120 elisp_maphash (unmap_subwindow_instance_cache_mapper, | |
2121 w->subwindow_instance_cache, (void*)1); | |
428 | 2122 } |
2123 | |
2124 /* we're deleting W; set the structure of W to indicate this. */ | |
2125 | |
2126 static void | |
2127 mark_window_as_deleted (struct window *w) | |
2128 { | |
442 | 2129 /* The window instance cache is going away now, so need to get the |
2130 cachels reset by redisplay. */ | |
2131 MARK_FRAME_SUBWINDOWS_CHANGED (XFRAME (WINDOW_FRAME (w))); | |
2132 | |
2133 /* The cache is going away. If we leave unmapping to | |
2134 reset_subwindow_cachels then we get in a situation where the | |
2135 domain (the window) has been deleted but we still need access to | |
2136 its attributes in order to unmap windows properly. Since the | |
2137 subwindows are going to get GC'd anyway as a result of the domain | |
2138 going away, it is safer to just unmap them all while we know the | |
2139 domain is still valid. */ | |
2140 ERROR_CHECK_SUBWINDOW_CACHE (w); | |
2141 window_unmap_subwindows (w); | |
2142 | |
617 | 2143 /* Free the extra data structures attached to windows immediately so |
2144 they don't sit around consuming excess space. They will be | |
2145 reinitialized by the window-configuration code as necessary. */ | |
2146 finalize_window ((void *) w, 0); | |
2147 | |
1149 | 2148 /* Nobody should be accessing anything in this object any more, |
618 | 2149 and making them Qnil allows for better GC'ing in case a pointer |
2150 to the dead window continues to hang around. Zero all other | |
2151 structs in case someone tries to access something through them. | |
2152 | |
2153 (So, in point of fact, we zero out all of the "saved" slots, | |
2154 which are obviously restored from the window config, plus the | |
2155 slots which were already zeroed.) | |
617 | 2156 |
2157 As an example of why setting the values to Qnil is good, here | |
2158 is an old comment: | |
2159 | |
2160 In the loop | |
428 | 2161 (while t (split-window) (delete-window)) |
2162 we end up with a tree of deleted windows which are all connected | |
2163 through the `next' slot. This might not seem so bad, as they're | |
2164 deleted, and will presumably be GCed - but if even *one* of those | |
2165 windows is still being pointed to, by the user, or by a window | |
1149 | 2166 configuration, then *all* of those windows stick around. */ |
617 | 2167 |
618 | 2168 #define WINDOW_SLOT(slot) |
2169 #define WINDOW_SAVED_SLOT(slot, compare) w->slot = Qnil; | |
617 | 2170 #include "winslots.h" |
428 | 2171 |
618 | 2172 w->next = Qnil; |
2173 w->prev = Qnil; | |
2174 w->hchild = Qnil; | |
2175 w->vchild = Qnil; | |
2176 w->parent = Qnil; | |
2177 w->subwindow_instance_cache = Qnil; | |
2178 | |
428 | 2179 w->dead = 1; |
853 | 2180 note_object_deleted (wrap_window (w)); |
428 | 2181 } |
2182 | |
1207 | 2183 /* Check if window contains pwindow. */ |
2184 | |
2185 static int | |
2186 contains_window (Lisp_Object window, Lisp_Object pwindow) | |
2187 { | |
2188 while (!NILP (pwindow)) | |
2189 { | |
2190 if (EQ (window, pwindow)) | |
2191 return 1; | |
2192 pwindow = XWINDOW (pwindow)->parent; | |
2193 } | |
2194 return 0; | |
2195 } | |
2196 | |
428 | 2197 DEFUN ("delete-window", Fdelete_window, 0, 2, "", /* |
2198 Remove WINDOW from the display. Default is selected window. | |
444 | 2199 If window is the only one on its frame, the frame is deleted as well. |
428 | 2200 Normally, you cannot delete the last non-minibuffer-only frame (you must |
2201 use `save-buffers-kill-emacs' or `kill-emacs'). However, if optional | |
2202 second argument FORCE is non-nil, you can delete the last frame. (This | |
2203 will automatically call `save-buffers-kill-emacs'.) | |
2204 */ | |
2205 (window, force)) | |
2206 { | |
2207 /* This function can GC if this is the only window in the frame */ | |
2208 struct window *w; | |
2209 Lisp_Object parent; | |
2210 struct window *par; | |
2211 Lisp_Object frame; | |
2212 struct frame *f; | |
2213 struct device *d; | |
2214 | |
2215 /* Note: this function is called by other C code on non-leaf | |
2216 windows. */ | |
2217 | |
2218 /* Do the equivalent of decode_window() but don't error out on | |
2219 deleted window; it's OK to delete an already-deleted window. */ | |
2220 if (NILP (window)) | |
2221 window = Fselected_window (Qnil); | |
2222 else | |
2223 CHECK_WINDOW (window); | |
442 | 2224 |
428 | 2225 w = XWINDOW (window); |
2226 | |
2227 /* It's okay to delete an already-deleted window. */ | |
2228 if (! WINDOW_LIVE_P (w)) | |
2229 return Qnil; | |
2230 | |
853 | 2231 check_allowed_operation (OPERATION_DELETE_OBJECT, window, Qnil); |
2232 | |
428 | 2233 frame = WINDOW_FRAME (w); |
2234 f = XFRAME (frame); | |
2235 d = XDEVICE (FRAME_DEVICE (f)); | |
2236 | |
2237 if (TOP_LEVEL_WINDOW_P (w)) | |
2238 { | |
2239 if (NILP (memq_no_quit (frame, DEVICE_FRAME_LIST (d)))) | |
2240 /* this frame isn't fully initialized yet; don't blow up. */ | |
2241 return Qnil; | |
2242 | |
2243 if (MINI_WINDOW_P (XWINDOW (window))) | |
563 | 2244 signal_error (Qinvalid_operation, "Attempt to delete the minibuffer window", Qunbound); |
428 | 2245 |
2246 /* It has been suggested that it's a good thing for C-x 0 to have this | |
2247 behavior, but not such a good idea for #'delete-window to have it. | |
2248 Maybe C-x 0 should be bound to something else, or maybe frame | |
2249 deletion should only happen when this is called interactively. | |
2250 */ | |
2251 delete_frame_internal (f, !NILP (force), 0, 0); | |
2252 return Qnil; | |
2253 } | |
2254 | |
2255 /* At this point, we know the window has a parent. */ | |
2256 parent = w->parent; | |
2257 par = XWINDOW (parent); | |
2258 | |
2259 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f); | |
430 | 2260 /* It's quite likely that deleting a window will result in |
2261 subwindows needing to be deleted also (since they are cached | |
2262 per-window). So we mark them as changed, so that the cachels will | |
2263 get reset by redisplay and thus deleted subwindows can get | |
2264 GC'd. */ | |
2265 MARK_FRAME_SUBWINDOWS_CHANGED (f); | |
428 | 2266 |
2267 /* Are we trying to delete any frame's selected window? | |
2268 Note that we could be dealing with a non-leaf window | |
2269 where the selected window is one of our children. | |
2270 So, we check by scanning all the ancestors of the | |
2271 frame's selected window and comparing each one with | |
2272 WINDOW. */ | |
1207 | 2273 if (contains_window (window, FRAME_SELECTED_WINDOW (f))) |
2274 { | |
2275 Lisp_Object alternative; | |
2276 alternative = Fnext_window (window, Qlambda, Qnil, Qnil); | |
2277 | |
2278 /* #### */ | |
2279 /* If we're about to delete the selected window on the | |
2280 selected frame, then we should use Fselect_window to select | |
2281 the new window. On the other hand, if we're about to | |
2282 delete the selected window on any other frame, we shouldn't do | |
2283 anything but set the frame's selected_window slot. */ | |
2284 if (EQ (frame, Fselected_frame (Qnil))) | |
2285 Fselect_window (alternative, Qnil); | |
2286 else | |
2287 set_frame_selected_window (f, alternative); | |
2288 } | |
2289 | |
2290 /* Some display parameters (gutter display specifically) depend on | |
2291 FRAME_LAST_NONMINIBUF (f) to be set to a live window. Ensure that. */ | |
2292 if (contains_window (window, FRAME_LAST_NONMINIBUF_WINDOW (f))) | |
2293 f->last_nonminibuf_window = Fnext_window (window, Qlambda, Qnil, Qnil); | |
428 | 2294 |
2295 /* w->buffer is nil in a non-leaf window; in this case, | |
2296 get rid of the markers we maintain that point into that buffer. */ | |
2297 if (!NILP (w->buffer)) | |
2298 { | |
2299 unshow_buffer (w); | |
2300 unchain_marker (w->pointm[CURRENT_DISP]); | |
2301 unchain_marker (w->pointm[DESIRED_DISP]); | |
2302 unchain_marker (w->pointm[CMOTION_DISP]); | |
2303 unchain_marker (w->start[CURRENT_DISP]); | |
2304 unchain_marker (w->start[DESIRED_DISP]); | |
2305 unchain_marker (w->start[CMOTION_DISP]); | |
2306 unchain_marker (w->sb_point); | |
1149 | 2307 w->buffer = Qnil; |
428 | 2308 } |
2309 | |
2310 /* close up the hole in the sibling list */ | |
2311 if (!NILP (w->next)) | |
2312 XWINDOW (w->next)->prev = w->prev; | |
2313 if (!NILP (w->prev)) | |
2314 XWINDOW (w->prev)->next = w->next; | |
2315 if (EQ (window, par->hchild)) | |
2316 par->hchild = w->next; | |
2317 if (EQ (window, par->vchild)) | |
2318 par->vchild = w->next; | |
2319 | |
2320 /* Find one of our siblings to give our space to. */ | |
2321 { | |
2322 Lisp_Object sib = w->prev; | |
2323 if (NILP (sib)) | |
2324 { | |
2325 /* If w gives its space to its next sibling, that sibling needs | |
2326 to have its top/left side pulled back to where w's is. | |
2327 set_window_{height,width} will re-position the sibling's | |
2328 children. */ | |
2329 sib = w->next; | |
2330 WINDOW_TOP (XWINDOW (sib)) = WINDOW_TOP (w); | |
2331 WINDOW_LEFT (XWINDOW (sib)) = WINDOW_LEFT (w); | |
2332 } | |
2333 | |
2334 /* Stretch that sibling. */ | |
2335 if (!NILP (par->vchild)) | |
2336 set_window_pixheight | |
2337 (sib, (WINDOW_HEIGHT (XWINDOW (sib)) + WINDOW_HEIGHT (w)), 1); | |
2338 if (!NILP (par->hchild)) | |
2339 set_window_pixwidth | |
2340 (sib, (WINDOW_WIDTH (XWINDOW (sib)) + WINDOW_WIDTH (w)), 1); | |
2341 } | |
2342 | |
2343 /* If parent now has only one child, | |
2344 put the child into the parent's place. */ | |
2345 { | |
2346 Lisp_Object parchild = par->hchild; | |
2347 if (NILP (parchild)) | |
2348 parchild = par->vchild; | |
2349 if (NILP (XWINDOW (parchild)->next)) | |
2350 { | |
2351 replace_window (parent, parchild); | |
2352 mark_window_as_deleted (XWINDOW (parent)); | |
2353 } | |
2354 } | |
2355 | |
2356 /* Since we may be deleting combination windows, we must make sure that | |
2357 not only W but all its children have been marked as deleted. */ | |
2358 if (!NILP (w->hchild)) | |
2359 delete_all_subwindows (XWINDOW (w->hchild)); | |
2360 else if (!NILP (w->vchild)) | |
2361 delete_all_subwindows (XWINDOW (w->vchild)); | |
2362 | |
1752 | 2363 /* Warning: mark_window_as_deleted calls window_unmap_subwindows and |
2364 therefore redisplay, so it requires the mirror structure to be | |
2365 correct. We must dirty the mirror before it is called. */ | |
2366 f->mirror_dirty = 1; | |
2367 | |
428 | 2368 mark_window_as_deleted (w); |
2369 | |
2370 return Qnil; | |
2371 } | |
2372 | |
2373 | |
2374 DEFUN ("next-window", Fnext_window, 0, 4, 0, /* | |
442 | 2375 Return the next window after WINDOW in the canonical ordering of windows. |
428 | 2376 If omitted, WINDOW defaults to the selected window. |
2377 | |
2378 Optional second arg MINIBUF t means count the minibuffer window even | |
2379 if not active. MINIBUF nil or omitted means count the minibuffer iff | |
2380 it is active. MINIBUF neither t nor nil means not to count the | |
2381 minibuffer even if it is active. | |
2382 | |
2383 Several frames may share a single minibuffer; if the minibuffer | |
2384 counts, all windows on all frames that share that minibuffer count | |
2385 too. Therefore, `next-window' can be used to iterate through the | |
2386 set of windows even when the minibuffer is on another frame. If the | |
2387 minibuffer does not count, only windows from WINDOW's frame count. | |
2388 | |
444 | 2389 By default, only the windows in the selected frame are considered. |
2390 The optional argument WHICH-FRAMES changes this behavior: | |
2391 WHICH-FRAMES = `visible' means search windows on all visible frames. | |
448 | 2392 WHICH-FRAMES = 0 means search windows on all visible and iconified frames. |
444 | 2393 WHICH-FRAMES = t means search windows on all frames including invisible frames. |
2394 WHICH-FRAMES = a frame means search only windows on that frame. | |
2395 Anything else means restrict to the selected frame. | |
2396 | |
2397 The optional fourth argument WHICH-DEVICES further clarifies on which | |
2398 devices to search for frames as specified by WHICH-FRAMES. This value | |
2399 is only meaningful if WHICH-FRAMES is non-nil. | |
2400 If nil or omitted, search all devices on the selected console. | |
2401 If a device, only search that device. | |
2402 If a console, search all devices on that console. | |
2403 If a device type, search all devices of that type. | |
2404 If `window-system', search all window-system devices. | |
2405 Any other non-nil value means search all devices. | |
2406 | |
2407 If you use consistent values for MINIBUF, WHICH-FRAMES, and WHICH-DEVICES, | |
2408 you can use `next-window' to iterate through the entire cycle of | |
2409 acceptable windows, eventually ending up back at the window you started with. | |
428 | 2410 `previous-window' traverses the same cycle, in the reverse order. |
2411 */ | |
444 | 2412 (window, minibuf, which_frames, which_devices)) |
428 | 2413 { |
2414 Lisp_Object tem; | |
2415 Lisp_Object start_window; | |
2416 | |
2417 if (NILP (window)) | |
2418 window = Fselected_window (Qnil); | |
2419 else | |
2420 CHECK_LIVE_WINDOW (window); | |
2421 | |
2422 start_window = window; | |
2423 | |
2424 /* minibuf == nil may or may not include minibuffers. | |
2425 Decide if it does. */ | |
2426 if (NILP (minibuf)) | |
2427 minibuf = (minibuf_level ? minibuf_window : Qlambda); | |
2428 else if (! EQ (minibuf, Qt)) | |
2429 minibuf = Qlambda; | |
442 | 2430 /* Now `minibuf' is one of: |
2431 t => count all minibuffer windows | |
2432 lambda => count none of them | |
428 | 2433 or a specific minibuffer window (the active one) to count. */ |
2434 | |
444 | 2435 /* which_frames == nil doesn't specify which frames to include. */ |
2436 if (NILP (which_frames)) | |
2437 which_frames = (! EQ (minibuf, Qlambda) | |
428 | 2438 ? (FRAME_MINIBUF_WINDOW |
2439 (XFRAME | |
2440 (WINDOW_FRAME | |
2441 (XWINDOW (window))))) | |
2442 : Qnil); | |
444 | 2443 else if (EQ (which_frames, Qvisible)) |
428 | 2444 ; |
444 | 2445 else if (ZEROP (which_frames)) |
428 | 2446 ; |
444 | 2447 else if (FRAMEP (which_frames) && ! EQ (which_frames, Fwindow_frame (window))) |
2448 /* If which_frames is a frame and window arg isn't on that frame, just | |
428 | 2449 return the first window on the frame. */ |
444 | 2450 return frame_first_window (XFRAME (which_frames)); |
2451 else if (! EQ (which_frames, Qt)) | |
2452 which_frames = Qnil; | |
2453 /* Now `which_frames' is one of: | |
442 | 2454 t => search all frames |
2455 nil => search just the current frame | |
2456 visible => search just visible frames | |
2457 0 => search visible and iconified frames | |
2458 a window => search the frame that window belongs to. */ | |
428 | 2459 |
2460 /* Do this loop at least once, to get the next window, and perhaps | |
2461 again, if we hit the minibuffer and that is not acceptable. */ | |
2462 do | |
2463 { | |
2464 /* Find a window that actually has a next one. This loop | |
2465 climbs up the tree. */ | |
2466 while (tem = XWINDOW (window)->next, NILP (tem)) | |
2467 if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
2468 window = tem; | |
2469 else /* window must be minibuffer window now */ | |
2470 { | |
2471 /* We've reached the end of this frame. | |
2472 Which other frames are acceptable? */ | |
2473 tem = WINDOW_FRAME (XWINDOW (window)); | |
2474 | |
444 | 2475 if (! NILP (which_frames)) |
428 | 2476 { |
442 | 2477 Lisp_Object tem1 = tem; |
444 | 2478 tem = next_frame (tem, which_frames, which_devices); |
442 | 2479 |
428 | 2480 /* In the case where the minibuffer is active, |
2481 and we include its frame as well as the selected one, | |
2482 next_frame may get stuck in that frame. | |
2483 If that happens, go back to the selected frame | |
2484 so we can complete the cycle. */ | |
2485 if (EQ (tem, tem1)) | |
793 | 2486 tem = wrap_frame (selected_frame ()); |
428 | 2487 } |
2488 | |
2489 tem = FRAME_ROOT_WINDOW (XFRAME (tem)); | |
2490 break; | |
2491 } | |
2492 | |
2493 window = tem; | |
2494 | |
2495 /* If we're in a combination window, find its first child and | |
2496 recurse on that. Otherwise, we've found the window we want. */ | |
2497 while (1) | |
2498 { | |
2499 if (!NILP (XWINDOW (window)->hchild)) | |
2500 window = XWINDOW (window)->hchild; | |
2501 else if (!NILP (XWINDOW (window)->vchild)) | |
2502 window = XWINDOW (window)->vchild; | |
2503 else break; | |
2504 } | |
2505 } | |
2506 /* Which windows are acceptable? | |
2507 Exit the loop and accept this window if | |
2508 this isn't a minibuffer window, | |
2509 or we're accepting all minibuffer windows, | |
2510 or this is the active minibuffer and we are accepting that one, or | |
2511 we've come all the way around and we're back at the original window. */ | |
2512 while (MINI_WINDOW_P (XWINDOW (window)) | |
2513 && ! EQ (minibuf, Qt) | |
2514 && ! EQ (minibuf, window) | |
2515 && ! EQ (window, start_window)); | |
2516 | |
2517 return window; | |
2518 } | |
2519 | |
2520 DEFUN ("previous-window", Fprevious_window, 0, 4, 0, /* | |
442 | 2521 Return the window preceding WINDOW in the canonical ordering of windows. |
428 | 2522 If omitted, WINDOW defaults to the selected window. |
2523 | |
2524 Optional second arg MINIBUF t means count the minibuffer window even | |
2525 if not active. MINIBUF nil or omitted means count the minibuffer iff | |
2526 it is active. MINIBUF neither t nor nil means not to count the | |
2527 minibuffer even if it is active. | |
2528 | |
2529 Several frames may share a single minibuffer; if the minibuffer | |
2530 counts, all windows on all frames that share that minibuffer count | |
2531 too. Therefore, `previous-window' can be used to iterate through | |
2532 the set of windows even when the minibuffer is on another frame. If | |
442 | 2533 the minibuffer does not count, only windows from WINDOW's frame count. |
2534 | |
444 | 2535 By default, only the windows in the selected frame are considered. |
2536 The optional argument WHICH-FRAMES changes this behavior: | |
2537 WHICH-FRAMES = `visible' means search windows on all visible frames. | |
448 | 2538 WHICH-FRAMES = 0 means search windows on all visible and iconified frames. |
444 | 2539 WHICH-FRAMES = t means search windows on all frames including invisible frames. |
2540 WHICH-FRAMES = a frame means search only windows on that frame. | |
2541 Anything else means restrict to the selected frame. | |
2542 | |
2543 The optional fourth argument WHICH-DEVICES further clarifies on which | |
2544 devices to search for frames as specified by WHICH-FRAMES. This value | |
2545 is only meaningful if WHICH-FRAMES is non-nil. | |
2546 If nil or omitted, search all devices on the selected console. | |
2547 If a device, only search that device. | |
2548 If a console, search all devices on that console. | |
2549 If a device type, search all devices of that type. | |
2550 If `window-system', search all window-system devices. | |
2551 Any other non-nil value means search all devices. | |
2552 | |
2553 If you use consistent values for MINIBUF, WHICH-FRAMES, and WHICH-DEVICES, | |
2554 you can use `previous-window' to iterate through the entire cycle of | |
2555 acceptable windows, eventually ending up back at the window you started with. | |
428 | 2556 `next-window' traverses the same cycle, in the reverse order. |
2557 */ | |
444 | 2558 (window, minibuf, which_frames, devices)) |
428 | 2559 { |
2560 Lisp_Object tem; | |
2561 Lisp_Object start_window; | |
2562 | |
2563 if (NILP (window)) | |
2564 window = Fselected_window (Qnil); | |
2565 else | |
2566 CHECK_LIVE_WINDOW (window); | |
2567 | |
2568 start_window = window; | |
2569 | |
2570 /* minibuf == nil may or may not include minibuffers. | |
2571 Decide if it does. */ | |
2572 if (NILP (minibuf)) | |
2573 minibuf = (minibuf_level ? minibuf_window : Qlambda); | |
2574 else if (! EQ (minibuf, Qt)) | |
2575 minibuf = Qlambda; | |
442 | 2576 /* Now `minibuf' is one of: |
2577 t => count all minibuffer windows | |
2578 lambda => count none of them | |
428 | 2579 or a specific minibuffer window (the active one) to count. */ |
2580 | |
444 | 2581 /* which_frames == nil doesn't specify which frames to include. |
428 | 2582 Decide which frames it includes. */ |
444 | 2583 if (NILP (which_frames)) |
2584 which_frames = (! EQ (minibuf, Qlambda) | |
428 | 2585 ? (FRAME_MINIBUF_WINDOW |
2586 (XFRAME | |
2587 (WINDOW_FRAME | |
2588 (XWINDOW (window))))) | |
2589 : Qnil); | |
444 | 2590 else if (EQ (which_frames, Qvisible)) |
428 | 2591 ; |
444 | 2592 else if (ZEROP (which_frames)) |
428 | 2593 ; |
444 | 2594 else if (FRAMEP (which_frames) && ! EQ (which_frames, Fwindow_frame (window))) |
2595 /* If which_frames is a frame and window arg isn't on that frame, just | |
428 | 2596 return the first window on the frame. */ |
444 | 2597 return frame_first_window (XFRAME (which_frames)); |
2598 else if (! EQ (which_frames, Qt)) | |
2599 which_frames = Qnil; | |
2600 /* Now `which_frames' is one of: | |
442 | 2601 t => search all frames |
2602 nil => search just the current frame | |
2603 visible => search just visible frames | |
2604 0 => search visible and iconified frames | |
2605 a window => search the frame that window belongs to. */ | |
428 | 2606 |
2607 /* Do this loop at least once, to get the next window, and perhaps | |
2608 again, if we hit the minibuffer and that is not acceptable. */ | |
2609 do | |
2610 { | |
2611 /* Find a window that actually has a next one. This loop | |
2612 climbs up the tree. */ | |
2613 while (tem = XWINDOW (window)->prev, NILP (tem)) | |
2614 if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
2615 window = tem; | |
2616 else /* window must be minibuffer window now */ | |
2617 { | |
2618 /* We have found the top window on the frame. | |
2619 Which frames are acceptable? */ | |
2620 tem = WINDOW_FRAME (XWINDOW (window)); | |
2621 | |
444 | 2622 if (! NILP (which_frames)) |
442 | 2623 /* It's actually important that we use previous_frame here, |
428 | 2624 rather than next_frame. All the windows acceptable |
2625 according to the given parameters should form a ring; | |
2626 Fnext_window and Fprevious_window should go back and | |
2627 forth around the ring. If we use next_frame here, | |
2628 then Fnext_window and Fprevious_window take different | |
2629 paths through the set of acceptable windows. | |
2630 window_loop assumes that these `ring' requirement are | |
2631 met. */ | |
2632 { | |
442 | 2633 Lisp_Object tem1 = tem; |
444 | 2634 tem = previous_frame (tem, which_frames, devices); |
428 | 2635 /* In the case where the minibuffer is active, |
2636 and we include its frame as well as the selected one, | |
2637 next_frame may get stuck in that frame. | |
2638 If that happens, go back to the selected frame | |
2639 so we can complete the cycle. */ | |
2640 if (EQ (tem, tem1)) | |
793 | 2641 tem = wrap_frame (selected_frame ()); |
428 | 2642 } |
2643 | |
2644 /* If this frame has a minibuffer, find that window first, | |
2645 because it is conceptually the last window in that frame. */ | |
2646 if (FRAME_HAS_MINIBUF_P (XFRAME (tem))) | |
2647 tem = FRAME_MINIBUF_WINDOW (XFRAME (tem)); | |
2648 else | |
2649 tem = FRAME_ROOT_WINDOW (XFRAME (tem)); | |
2650 | |
2651 break; | |
2652 } | |
2653 | |
2654 window = tem; | |
2655 | |
2656 /* If we're in a combination window, find its first child and | |
2657 recurse on that. Otherwise, we've found the window we want. */ | |
2658 while (1) | |
2659 { | |
2660 if (!NILP (XWINDOW (window)->hchild)) | |
2661 window = XWINDOW (window)->hchild; | |
2662 else if (!NILP (XWINDOW (window)->vchild)) | |
2663 window = XWINDOW (window)->vchild; | |
2664 else break; | |
2665 while (tem = XWINDOW (window)->next, !NILP (tem)) | |
2666 window = tem; | |
2667 } | |
2668 } | |
2669 /* Which windows are acceptable? | |
2670 Exit the loop and accept this window if | |
2671 this isn't a minibuffer window, | |
2672 or we're accepting all minibuffer windows, | |
2673 or this is the active minibuffer and we are accepting that one, or | |
2674 we've come all the way around and we're back at the original window. */ | |
2675 while (MINI_WINDOW_P (XWINDOW (window)) | |
2676 && ! EQ (minibuf, Qt) | |
2677 && ! EQ (minibuf, window) | |
2678 && ! EQ (window, start_window)); | |
2679 | |
2680 return window; | |
2681 } | |
2682 | |
2683 DEFUN ("next-vertical-window", Fnext_vertical_window, 0, 1, 0, /* | |
2684 Return the next window which is vertically after WINDOW. | |
2685 */ | |
2686 (window)) | |
2687 { | |
2688 Lisp_Object root; | |
2689 struct window *w = decode_window (window); | |
793 | 2690 window = wrap_window (w); |
428 | 2691 |
2692 if (MINI_WINDOW_P (XWINDOW (window))) | |
2693 return Qnil; | |
2694 | |
2695 root = FRAME_ROOT_WINDOW (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
2696 | |
2697 if (EQ (window, root)) | |
2698 { | |
2699 while (1) | |
2700 if (!NILP (XWINDOW (window)->hchild)) | |
2701 window = XWINDOW (window)->hchild; | |
2702 else if (!NILP (XWINDOW (window)->vchild)) | |
2703 window = XWINDOW (window)->vchild; | |
2704 else | |
2705 return window; | |
2706 } | |
2707 | |
2708 do | |
2709 { | |
2710 if (!NILP (XWINDOW (window)->parent) && | |
2711 !NILP (XWINDOW (XWINDOW (window)->parent)->vchild)) | |
2712 { | |
2713 if (!NILP (XWINDOW (window)->next)) | |
2714 return XWINDOW (window)->next; | |
2715 else | |
2716 window = XWINDOW (window)->parent; | |
2717 } | |
2718 else | |
2719 window = XWINDOW (window)->parent; | |
2720 } | |
2721 while (!EQ (window, root)); | |
2722 | |
2723 while (1) | |
2724 if (!NILP (XWINDOW (window)->hchild)) | |
2725 window = XWINDOW (window)->hchild; | |
2726 else if (!NILP (XWINDOW (window)->vchild)) | |
2727 window = XWINDOW (window)->vchild; | |
2728 else | |
2729 return window; | |
2730 } | |
2731 | |
2732 DEFUN ("other-window", Fother_window, 1, 3, "p", /* | |
444 | 2733 Select the COUNT'th different window on this frame. |
428 | 2734 All windows on current frame are arranged in a cyclic order. |
444 | 2735 This command selects the window COUNT steps away in that order. |
2736 A negative COUNT moves in the opposite order. | |
2737 | |
2738 By default, only the windows in the selected frame are considered. | |
2739 The optional argument WHICH-FRAMES changes this behavior: | |
2740 WHICH-FRAMES = `visible' means search windows on all visible frames. | |
448 | 2741 WHICH-FRAMES = 0 means search windows on all visible and iconified frames. |
444 | 2742 WHICH-FRAMES = t means search windows on all frames including invisible frames. |
2743 WHICH-FRAMES = a frame means search only windows on that frame. | |
2744 Anything else means restrict to the selected frame. | |
2745 | |
2746 The optional argument WHICH-DEVICES further clarifies on which devices | |
2747 to search for frames as specified by WHICH-FRAMES. This value is only | |
2748 meaningful if WHICH-FRAMES is non-nil. | |
2749 If nil or omitted, search all devices on the selected console. | |
2750 If a device, only search that device. | |
2751 If a console, search all devices on that console. | |
2752 If a device type, search all devices of that type. | |
2753 If `window-system', search all window-system devices. | |
2754 Any other non-nil value means search all devices. | |
428 | 2755 */ |
444 | 2756 (count, which_frames, which_devices)) |
428 | 2757 { |
2758 int i; | |
2759 Lisp_Object w; | |
2760 | |
444 | 2761 CHECK_INT (count); |
428 | 2762 w = Fselected_window (Qnil); |
444 | 2763 i = XINT (count); |
428 | 2764 |
2765 while (i > 0) | |
2766 { | |
444 | 2767 w = Fnext_window (w, Qnil, which_frames, which_devices); |
428 | 2768 i--; |
2769 } | |
2770 while (i < 0) | |
2771 { | |
444 | 2772 w = Fprevious_window (w, Qnil, which_frames, which_devices); |
428 | 2773 i++; |
2774 } | |
2775 Fselect_window (w, Qnil); | |
2776 return Qnil; | |
2777 } | |
2778 | |
2779 | |
2780 /* Look at all windows, performing an operation specified by TYPE | |
2781 with argument OBJ. | |
2782 | |
2783 If FRAMES is Qt, look at all frames, if Qnil, look at just the selected | |
2784 frame. If FRAMES is a frame, just look at windows on that frame. | |
2785 If MINI is non-zero, perform the operation on minibuffer windows too. | |
2786 */ | |
2787 | |
2788 enum window_loop | |
2789 { | |
2790 WINDOW_LOOP_UNUSED, | |
2791 GET_BUFFER_WINDOW, /* Arg is buffer */ | |
2792 GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
2793 DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
2794 DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
2795 GET_LARGEST_WINDOW, | |
2796 GET_BUFFER_WINDOW_COUNT, /* Arg is buffer */ | |
2797 GET_BUFFER_MRU_WINDOW /* Arg is buffer */ | |
2798 }; | |
2799 | |
2800 static Lisp_Object | |
2801 window_loop (enum window_loop type, | |
2802 Lisp_Object obj, | |
2803 int mini, | |
444 | 2804 Lisp_Object which_frames, |
428 | 2805 int dedicated_too, |
444 | 2806 Lisp_Object which_devices) |
428 | 2807 { |
448 | 2808 /* This function can GC if type == DELETE_BUFFER_WINDOWS */ |
428 | 2809 Lisp_Object w; |
2810 Lisp_Object best_window = Qnil; | |
2811 Lisp_Object next_window; | |
2812 Lisp_Object last_window; | |
2813 struct frame *frame; | |
2814 Lisp_Object frame_arg = Qt; | |
2815 int count = 0; /* for GET_BUFFER_WINDOW_COUNT */ | |
2816 /* #### I think the change of "precomputing" last_window and next_window | |
2817 * #### catch the lossage this is meant(?) to punt on... | |
2818 */ | |
2819 int lose_lose = 0; | |
2820 Lisp_Object devcons, concons; | |
2821 | |
2822 /* If we're only looping through windows on a particular frame, | |
2823 FRAME points to that frame. If we're looping through windows | |
2824 on all frames, FRAME is 0. */ | |
444 | 2825 if (FRAMEP (which_frames)) |
2826 frame = XFRAME (which_frames); | |
2827 else if (NILP (which_frames)) | |
428 | 2828 frame = selected_frame (); |
2829 else | |
2830 frame = 0; | |
442 | 2831 |
2832 /* FRAME_ARG is Qlambda to stick to one frame, | |
2833 Qvisible to consider all visible frames, | |
2834 or Qt otherwise. */ | |
428 | 2835 if (frame) |
2836 frame_arg = Qlambda; | |
444 | 2837 else if (ZEROP (which_frames)) |
2838 frame_arg = which_frames; | |
2839 else if (EQ (which_frames, Qvisible)) | |
2840 frame_arg = which_frames; | |
428 | 2841 |
2842 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
2843 { | |
2844 Lisp_Object device = XCAR (devcons); | |
2845 Lisp_Object the_frame; | |
2846 | |
2847 if (frame) | |
793 | 2848 the_frame = wrap_frame (frame); |
428 | 2849 else |
2850 the_frame = DEVICE_SELECTED_FRAME (XDEVICE (device)); | |
2851 | |
2852 if (NILP (the_frame)) | |
2853 continue; | |
2854 | |
444 | 2855 if (!device_matches_device_spec (device, |
2856 NILP (which_devices) ? | |
2857 FRAME_CONSOLE (XFRAME (the_frame)) : | |
2858 which_devices)) | |
428 | 2859 continue; |
2860 | |
2861 /* Pick a window to start with. */ | |
2862 if (WINDOWP (obj)) | |
2863 w = obj; | |
2864 else | |
2865 w = FRAME_SELECTED_WINDOW (XFRAME (the_frame)); | |
2866 | |
2867 /* Figure out the last window we're going to mess with. Since | |
2868 Fnext_window, given the same options, is guaranteed to go in a | |
2869 ring, we can just use Fprevious_window to find the last one. | |
2870 | |
2871 We can't just wait until we hit the first window again, | |
2872 because it might be deleted. */ | |
2873 | |
707 | 2874 last_window = Fprevious_window (w, mini ? Qt : Qnil, frame_arg, device); |
428 | 2875 |
2876 best_window = Qnil; | |
2877 for (;;) | |
2878 { | |
2879 struct window *p = XWINDOW (w); | |
2880 | |
2881 /* Pick the next window now, since some operations will delete | |
2882 the current window. */ | |
442 | 2883 next_window = Fnext_window (w, mini ? Qt : Qnil, frame_arg, device); |
428 | 2884 |
2885 /* #### Still needed ?? */ | |
2886 /* Given the outstanding quality of the rest of this code, | |
2887 I feel no shame about putting this piece of shit in. */ | |
2888 if (++lose_lose >= 500) | |
707 | 2889 { |
2500 | 2890 /* Call to ABORT() added by Darryl Okahata (16 Nov. 2001), |
707 | 2891 at Ben's request, to catch any remaining bugs. |
2892 | |
2893 If you find that XEmacs is aborting here, and you | |
2894 need to be up and running ASAP, it should be safe to | |
2500 | 2895 comment out the following ABORT(), as long as you |
707 | 2896 leave the "break;" alone. */ |
2500 | 2897 ABORT(); |
707 | 2898 break; /* <--- KEEP THIS HERE! Do not delete! */ |
2899 } | |
428 | 2900 |
2901 /* Note that we do not pay attention here to whether | |
2902 the frame is visible, since Fnext_window skips non-visible frames | |
2903 if that is desired, under the control of frame_arg. */ | |
2904 if (! MINI_WINDOW_P (p) | |
2905 || (mini && minibuf_level > 0)) | |
2906 switch (type) | |
2907 { | |
2908 case GET_BUFFER_WINDOW: | |
2909 { | |
2910 if (XBUFFER (p->buffer) == XBUFFER (obj)) | |
2911 return w; | |
2912 break; | |
2913 } | |
2914 | |
2915 case GET_BUFFER_WINDOW_COUNT: | |
2916 { | |
2917 if (XBUFFER (p->buffer) == XBUFFER (obj)) | |
2918 count++; | |
2919 break; | |
2920 } | |
2921 | |
2922 case GET_LRU_WINDOW: | |
2923 { | |
2924 /* t as arg means consider only full-width windows */ | |
2925 if (!NILP (obj) | |
2926 && !window_full_width_p (p)) | |
2927 break; | |
2928 /* Ignore dedicated windows and minibuffers. */ | |
2929 if (MINI_WINDOW_P (p) | |
2930 || (dedicated_too ? 0 : !NILP (p->dedicated))) | |
2931 break; | |
2932 if (NILP (best_window) | |
2933 || (XINT (XWINDOW (best_window)->use_time) | |
2934 > XINT (p->use_time))) | |
2935 best_window = w; | |
2936 break; | |
2937 } | |
2938 | |
2939 case GET_BUFFER_MRU_WINDOW: | |
2940 { | |
2941 /* #### what about the first check in GET_LRU_WINDOW? */ | |
2942 /* Ignore dedicated windows and minibuffers. */ | |
2943 if (MINI_WINDOW_P (p) | |
2944 || (dedicated_too ? 0 : !NILP (p->dedicated))) | |
2945 break; | |
2946 | |
2947 if (XBUFFER (p->buffer) == XBUFFER (obj)) | |
2948 { | |
2949 if (NILP (best_window) | |
2950 || (XINT (XWINDOW (best_window)->use_time) | |
2951 < XINT (p->use_time))) | |
2952 best_window = w; | |
2953 } | |
2954 break; | |
2955 } | |
2956 | |
2957 case DELETE_OTHER_WINDOWS: | |
2958 { | |
2959 /* Don't delete the last window on a frame; this can | |
2960 happen when the minibuffer is selected, and would | |
2961 cause the frame to be deleted. */ | |
2962 if (p != XWINDOW (obj) && !TOP_LEVEL_WINDOW_P (XWINDOW (w))) | |
2963 Fdelete_window (w, Qnil); | |
2964 break; | |
2965 } | |
2966 | |
2967 case DELETE_BUFFER_WINDOWS: | |
2968 { | |
2969 if (EQ (p->buffer, obj)) | |
2970 { | |
2971 struct frame *f = XFRAME (WINDOW_FRAME (p)); | |
2972 | |
2973 /* If this window is dedicated, and in a frame | |
2974 of its own, kill the frame. */ | |
2975 if (EQ (w, FRAME_ROOT_WINDOW (f)) | |
2976 && !NILP (p->dedicated) | |
1979 | 2977 && (allow_deletion_of_last_visible_frame |
2978 || other_visible_frames (f))) | |
428 | 2979 { |
2980 /* Skip the other windows on this frame. | |
2981 There might be one, the minibuffer! */ | |
2982 if (! EQ (w, last_window)) | |
2983 while (f == XFRAME (WINDOW_FRAME | |
2984 (XWINDOW (next_window)))) | |
2985 { | |
2986 /* As we go, check for the end of the | |
2987 loop. We mustn't start going | |
2988 around a second time. */ | |
2989 if (EQ (next_window, last_window)) | |
2990 { | |
2991 last_window = w; | |
2992 break; | |
2993 } | |
2994 next_window = Fnext_window (next_window, | |
2995 mini ? Qt : Qnil, | |
2996 frame_arg, Qt); | |
2997 } | |
2998 /* Now we can safely delete the frame. */ | |
2999 Fdelete_frame (WINDOW_FRAME (p), Qnil); | |
3000 } | |
3001 else | |
3002 /* If we're deleting the buffer displayed in | |
3003 the only window on the frame, find a new | |
3004 buffer to display there. */ | |
3005 if (NILP (p->parent)) | |
3006 { | |
3007 Lisp_Object new_buffer; | |
3008 new_buffer = Fother_buffer (obj, Qnil, Qnil); | |
3009 if (NILP (new_buffer)) | |
3010 new_buffer = Fget_buffer_create (QSscratch); | |
440 | 3011 Fset_window_buffer (w, new_buffer, Qnil); |
428 | 3012 if (EQ (w, Fselected_window (Qnil))) |
3013 Fset_buffer (p->buffer); | |
3014 } | |
3015 else | |
3016 Fdelete_window (w, Qnil); | |
3017 } | |
3018 break; | |
3019 } | |
3020 | |
3021 case GET_LARGEST_WINDOW: | |
3022 { | |
3023 /* Ignore dedicated windows and minibuffers. */ | |
3024 if (MINI_WINDOW_P (p) | |
3025 || (dedicated_too ? 0 : !NILP (p->dedicated))) | |
3026 break; | |
3027 { | |
3028 /* write the check as follows to avoid tripping | |
3029 error_check_window() --ben */ | |
3030 struct window *b = NILP (best_window) ? 0 : | |
3031 XWINDOW (best_window); | |
3032 if (NILP (best_window) | |
3033 || ((WINDOW_HEIGHT (p) * WINDOW_WIDTH (p)) | |
3034 > (WINDOW_HEIGHT (b) * WINDOW_WIDTH (b)))) | |
3035 best_window = w; | |
3036 } | |
3037 break; | |
3038 } | |
3039 | |
3040 default: | |
2500 | 3041 ABORT (); |
428 | 3042 } |
3043 | |
3044 if (EQ (w, last_window)) | |
3045 break; | |
3046 | |
3047 w = next_window; | |
3048 } | |
3049 } | |
3050 | |
3051 return type == GET_BUFFER_WINDOW_COUNT ? make_int (count) : best_window; | |
3052 } | |
3053 | |
3054 #if 0 /* not currently used */ | |
3055 | |
3056 int | |
3057 buffer_window_count (struct buffer *b, struct frame *f) | |
3058 { | |
3059 Lisp_Object buffer, frame; | |
3060 | |
793 | 3061 frame = wrap_frame (f); |
3062 buffer = wrap_buffer (b); | |
428 | 3063 |
3064 return XINT (window_loop (GET_BUFFER_WINDOW_COUNT, buffer, 0, frame, 1, | |
3065 Qnil)); | |
3066 } | |
3067 | |
3068 int | |
3069 buffer_window_mru (struct window *w) | |
3070 { | |
3071 Lisp_Object window = | |
3072 window_loop (GET_BUFFER_MRU_WINDOW, w->buffer, 0, w->frame, 1, Qnil); | |
3073 | |
3074 if (NILP (window)) | |
3075 return 0; | |
3076 else if (XWINDOW (window) == w) | |
3077 return 1; | |
3078 else | |
3079 return 0; | |
3080 } | |
3081 | |
3082 #endif | |
3083 | |
3084 | |
3085 DEFUN ("get-lru-window", Fget_lru_window, 0, 2, 0, /* | |
3086 Return the window least recently selected or used for display. | |
444 | 3087 |
3088 By default, only the windows in the selected frame are considered. | |
3089 The optional argument WHICH-FRAMES changes this behavior: | |
3090 If optional argument WHICH-FRAMES is `visible', search all visible frames. | |
3091 If WHICH-FRAMES is 0, search all visible and iconified frames. | |
3092 If WHICH-FRAMES is t, search all frames. | |
3093 If WHICH-FRAMES is nil, search only the selected frame. | |
3094 If WHICH-FRAMES is a frame, search only that frame. | |
3095 | |
3096 The optional argument WHICH-DEVICES further clarifies on which devices | |
3097 to search for frames as specified by WHICH-FRAMES. This value is only | |
3098 meaningful if WHICH-FRAMES is non-nil. | |
3099 If nil or omitted, search all devices on the selected console. | |
3100 If a device, only search that device. | |
3101 If a console, search all devices on that console. | |
3102 If a device type, search all devices of that type. | |
3103 If `window-system', search all devices on window-system consoles. | |
3104 Any other non-nil value means search all devices. | |
428 | 3105 */ |
444 | 3106 (which_frames, which_devices)) |
428 | 3107 { |
3108 Lisp_Object w; | |
3109 /* First try for a non-dedicated window that is full-width */ | |
444 | 3110 w = window_loop (GET_LRU_WINDOW, Qt, 0, which_frames, 0, which_devices); |
428 | 3111 if (!NILP (w) && !EQ (w, Fselected_window (Qnil))) |
3112 return w; | |
3113 | |
3114 /* Then try for any non-dedicated window */ | |
444 | 3115 w = window_loop (GET_LRU_WINDOW, Qnil, 0, which_frames, 0, which_devices); |
428 | 3116 if (!NILP (w) && !EQ (w, Fselected_window (Qnil))) |
3117 return w; | |
3118 | |
3119 #if 0 | |
3120 /* FSFmacs never returns a dedicated window here. If we do, | |
3121 it makes `display-buffer' not work right. #### All of this | |
3122 shit is so disgusting and awful that it needs to be rethought | |
3123 from scratch. */ | |
3124 /* then try for a dedicated window that is full-width */ | |
444 | 3125 w = window_loop (GET_LRU_WINDOW, Qt, 0, which_frames, 1, which_devices); |
428 | 3126 if (!NILP (w) && !EQ (w, Fselected_window (Qnil))) |
3127 return w; | |
3128 | |
3129 /* If none of them, then all windows, dedicated or not. */ | |
444 | 3130 w = window_loop (GET_LRU_WINDOW, Qnil, 0, which_frames, 1, which_devices); |
428 | 3131 |
3132 /* At this point we damn well better have found something. */ | |
2500 | 3133 if (NILP (w)) ABORT (); |
428 | 3134 #endif |
3135 | |
3136 return w; | |
3137 } | |
3138 | |
3139 DEFUN ("get-largest-window", Fget_largest_window, 0, 2, 0, /* | |
3140 Return the window largest in area. | |
444 | 3141 |
3142 By default, only the windows in the selected frame are considered. | |
3143 The optional argument WHICH-FRAMES changes this behavior: | |
3144 If optional argument WHICH-FRAMES is `visible', search all visible frames. | |
3145 If WHICH-FRAMES is 0, search all visible and iconified frames. | |
3146 If WHICH-FRAMES is t, search all frames. | |
3147 If WHICH-FRAMES is nil, search only the selected frame. | |
3148 If WHICH-FRAMES is a frame, search only that frame. | |
3149 | |
3150 The optional argument WHICH-DEVICES further clarifies on which devices | |
3151 to search for frames as specified by WHICH-FRAMES. This value is only | |
3152 meaningful if WHICH-FRAMES is non-nil. | |
3153 If nil or omitted, search all devices on the selected console. | |
3154 If a device, only search that device. | |
3155 If a console, search all devices on that console. | |
3156 If a device type, search all devices of that type. | |
3157 If `window-system', search all devices on window-system consoles. | |
3158 Any other non-nil value means search all devices. | |
428 | 3159 */ |
444 | 3160 (which_frames, which_devices)) |
428 | 3161 { |
3162 /* Don't search dedicated windows because FSFmacs doesn't. | |
3163 This stuff is all black magic so don't try to apply common | |
3164 sense to it. */ | |
444 | 3165 return window_loop (GET_LARGEST_WINDOW, Qnil, 0, |
3166 which_frames, 0, which_devices); | |
428 | 3167 } |
3168 | |
3169 DEFUN ("get-buffer-window", Fget_buffer_window, 1, 3, 0, /* | |
3170 Return a window currently displaying BUFFER, or nil if none. | |
444 | 3171 |
3172 By default, only the windows in the selected frame are considered. | |
3173 The optional argument WHICH-FRAMES changes this behavior: | |
3174 If optional argument WHICH-FRAMES is `visible', search all visible frames. | |
3175 If WHICH-FRAMES is 0, search all visible and iconified frames. | |
3176 If WHICH-FRAMES is t, search all frames. | |
3177 If WHICH-FRAMES is nil, search only the selected frame. | |
3178 If WHICH-FRAMES is a frame, search only that frame. | |
3179 | |
3180 The optional argument WHICH-DEVICES further clarifies on which devices | |
3181 to search for frames as specified by WHICH-FRAMES. This value is only | |
3182 meaningful if WHICH-FRAMES is non-nil. | |
3183 If nil or omitted, search all devices on the selected console. | |
3184 If a device, only search that device. | |
3185 If a console, search all devices on that console. | |
3186 If a device type, search all devices of that type. | |
3187 If `window-system', search all devices on window-system consoles. | |
3188 Any other non-nil value means search all devices. | |
428 | 3189 */ |
444 | 3190 (buffer, which_frames, which_devices)) |
428 | 3191 { |
3192 buffer = Fget_buffer (buffer); | |
3193 if (BUFFERP (buffer)) | |
3194 /* Search dedicated windows too. (Doesn't matter here anyway.) */ | |
444 | 3195 return window_loop (GET_BUFFER_WINDOW, buffer, 1, |
3196 which_frames, 1, which_devices); | |
428 | 3197 else |
3198 return Qnil; | |
3199 } | |
3200 | |
3201 /* These functions used to be `buffer-left-margin-pixel-width', etc. | |
3202 but there is no sensible way to implement those functions, since | |
3203 you can't in general derive a window from a buffer. */ | |
3204 | |
3205 DEFUN ("window-left-margin-pixel-width", Fwindow_left_margin_pixel_width, | |
3206 0, 1, 0, /* | |
3207 Return the width in pixels of the left outside margin of window WINDOW. | |
3208 If WINDOW is nil, the selected window is assumed. | |
3209 */ | |
3210 (window)) | |
3211 { | |
3212 return make_int (window_left_margin_width (decode_window (window))); | |
3213 } | |
3214 | |
3215 DEFUN ("window-right-margin-pixel-width", Fwindow_right_margin_pixel_width, | |
3216 0, 1, 0, /* | |
3217 Return the width in pixels of the right outside margin of window WINDOW. | |
3218 If WINDOW is nil, the selected window is assumed. | |
3219 */ | |
3220 (window)) | |
3221 { | |
3222 return make_int (window_right_margin_width (decode_window (window))); | |
3223 } | |
3224 | |
3225 DEFUN ("delete-other-windows", Fdelete_other_windows, 0, 1, "", /* | |
3226 Make WINDOW (or the selected window) fill its frame. | |
3227 Only the frame WINDOW is on is affected. | |
3228 This function tries to reduce display jumps | |
3229 by keeping the text previously visible in WINDOW | |
3230 in the same place on the frame. Doing this depends on | |
3231 the value of (window-start WINDOW), so if calling this function | |
3232 in a program gives strange scrolling, make sure the window-start | |
3233 value is reasonable when this function is called. | |
3234 */ | |
3235 (window)) | |
3236 { | |
3237 struct window *w = decode_window (window); | |
1207 | 3238 struct buffer *b; |
665 | 3239 Charbpos start_pos; |
428 | 3240 int old_top = WINDOW_TOP (w); |
3241 | |
1207 | 3242 if (NILP (WINDOW_BUFFER (w))) |
3243 invalid_operation ("Can't delete other windows of combination", window); | |
3244 | |
793 | 3245 window = wrap_window (w); |
1207 | 3246 b = XBUFFER (WINDOW_BUFFER (w)); |
428 | 3247 |
3248 if (MINI_WINDOW_P (w) && old_top > 0) | |
563 | 3249 invalid_operation ("Can't expand minibuffer to full frame", Qunbound); |
428 | 3250 |
3251 /* Ignore dedicated windows. */ | |
3252 window_loop (DELETE_OTHER_WINDOWS, window, 0, w->frame, 0, Qnil); | |
3253 | |
3254 start_pos = marker_position (w->start[CURRENT_DISP]); | |
3255 | |
3256 /* Try to minimize scrolling, by setting the window start to the | |
3257 point which will cause the text at the old window start to be at | |
3258 the same place on the frame. But don't try to do this if the | |
3259 window start is outside the visible portion (as might happen when | |
3260 the display is not current, due to typeahead). */ | |
3261 if (start_pos >= BUF_BEGV (b) && start_pos <= BUF_ZV (b) | |
3262 && !MINI_WINDOW_P (w)) | |
3263 { | |
665 | 3264 Charbpos new_start = start_with_line_at_pixpos (w, start_pos, old_top); |
428 | 3265 |
3266 if (new_start >= BUF_BEGV (b) && new_start <= BUF_ZV (b)) | |
3267 { | |
3268 Fset_marker (w->start[CURRENT_DISP], make_int (new_start), | |
3269 w->buffer); | |
3270 w->start_at_line_beg = beginning_of_line_p (b, new_start); | |
3271 } | |
3272 /* We need to do this, so that the window-scroll-functions | |
3273 get called. */ | |
3274 w->force_start = 1; | |
3275 } | |
3276 | |
3277 return Qnil; | |
3278 } | |
3279 | |
3280 DEFUN ("delete-windows-on", Fdelete_windows_on, 1, 3, | |
3281 "bDelete windows on (buffer): ", /* | |
3282 Delete all windows showing BUFFER. | |
444 | 3283 |
3284 Optional second argument WHICH-FRAMES controls which frames are affected. | |
428 | 3285 If nil or omitted, delete all windows showing BUFFER in any frame. |
3286 If t, delete only windows showing BUFFER in the selected frame. | |
3287 If `visible', delete all windows showing BUFFER in any visible frame. | |
3288 If a frame, delete only windows showing BUFFER in that frame. | |
444 | 3289 Warning: WHICH-FRAMES has the same meaning as with `next-window', |
3290 except that the meanings of nil and t are reversed. | |
3291 | |
3292 The optional third argument WHICH-DEVICES further clarifies on which | |
3293 devices to search for frames as specified by WHICH-FRAMES. This value | |
3294 is only meaningful if WHICH-FRAMES is not t. | |
3295 If nil or omitted, search only the selected console. | |
3296 If a device, only search that device. | |
3297 If a console, search all devices on that console. | |
3298 If a device type, search all devices of that type. | |
3299 If `window-system', search all devices on a window system. | |
3300 Any other non-nil value means search all devices. | |
428 | 3301 */ |
444 | 3302 (buffer, which_frames, which_devices)) |
428 | 3303 { |
3304 /* This function can GC */ | |
444 | 3305 buffer = Fget_buffer (buffer); |
3306 CHECK_BUFFER (buffer); | |
3307 | |
3308 /* WHICH-FRAMES values t and nil mean the opposite of what | |
3309 window_loop expects. */ | |
3310 if (EQ (which_frames, Qnil)) | |
3311 which_frames = Qt; | |
3312 else if (EQ (which_frames, Qt)) | |
3313 which_frames = Qnil; | |
3314 | |
3315 /* Ignore dedicated windows. */ | |
3316 window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, | |
3317 which_frames, 0, which_devices); | |
428 | 3318 return Qnil; |
3319 } | |
3320 | |
448 | 3321 static Lisp_Object |
3322 list_windows (struct window *w, Lisp_Object value) | |
3323 { | |
3324 for (;;) | |
3325 { | |
3326 if (!NILP (w->hchild)) | |
3327 value = list_windows (XWINDOW (w->hchild), value); | |
3328 else if (!NILP (w->vchild)) | |
3329 value = list_windows (XWINDOW (w->vchild), value); | |
3330 else | |
3331 { | |
793 | 3332 Lisp_Object window = wrap_window (w); |
3333 | |
448 | 3334 value = Fcons (window, value); |
3335 } | |
3336 if (NILP (w->next)) | |
3337 break; | |
3338 w = XWINDOW (w->next); | |
3339 } | |
3340 return value; | |
3341 } | |
3342 | |
3343 static Lisp_Object | |
3344 list_all_windows (Lisp_Object frame_spec, Lisp_Object device_spec) | |
3345 { | |
3346 Lisp_Object devcons, concons; | |
3347 Lisp_Object retval = Qnil; | |
3348 | |
3349 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
3350 { | |
3351 Lisp_Object frame_list, the_window; | |
3352 Lisp_Object device, tail; | |
3353 | |
3354 device = XCAR (devcons); | |
3355 frame_list = DEVICE_FRAME_LIST (XDEVICE (device)); | |
3356 | |
3357 LIST_LOOP (tail, frame_list) | |
3358 { | |
3359 if ((NILP (frame_spec) | |
3360 && !EQ (XCAR (tail), DEVICE_SELECTED_FRAME (XDEVICE (device)))) | |
3361 || (EQ (frame_spec, Qvisible) | |
3362 && !FRAME_VISIBLE_P (XFRAME (XCAR (tail)))) | |
3363 || (FRAMEP (frame_spec) | |
3364 && !EQ (frame_spec, XCAR (tail))) | |
3365 || (!NILP (frame_spec) | |
3366 && !device_matches_device_spec (device, | |
3367 NILP (device_spec) ? | |
3368 Vselected_console : | |
3369 device_spec))) | |
3370 continue; | |
3371 the_window = FRAME_ROOT_WINDOW (XFRAME (XCAR (tail))); | |
3372 retval = list_windows (XWINDOW (the_window), retval); | |
3373 } | |
3374 } | |
3375 return Fnreverse (retval); | |
3376 } | |
3377 | |
444 | 3378 DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, 1, 3, |
428 | 3379 "bReplace buffer in windows: ", /* |
3380 Replace BUFFER with some other buffer in all windows showing it. | |
444 | 3381 |
3382 Optional second argument WHICH-FRAMES controls which frames are affected. | |
3383 If nil or omitted, all frames are affected. | |
3384 If t, only the selected frame is affected. | |
3385 If `visible', all visible frames are affected. | |
3386 If a frame, only that frame is affected. | |
3387 Warning: WHICH-FRAMES has the same meaning as with `next-window', | |
3388 except that the meanings of nil and t are reversed. | |
3389 | |
3390 The optional third argument WHICH-DEVICES further clarifies on which | |
3391 devices to search for frames as specified by WHICH-FRAMES. This value | |
3392 is only meaningful if WHICH-FRAMES is not t. | |
3393 If nil or omitted, search only the selected console. | |
3394 If a device, only search that device. | |
3395 If a console, search all devices on that console. | |
3396 If a device type, search all devices of that type. | |
3397 If `window-system', search all devices on a window system. | |
3398 Any other non-nil value means search all devices. | |
428 | 3399 */ |
444 | 3400 (buffer, which_frames, which_devices)) |
428 | 3401 { |
3402 /* This function can GC */ | |
448 | 3403 Lisp_Object window_list; |
3404 Lisp_Object tail; | |
3405 struct gcpro gcpro1, gcpro2; | |
3406 | |
444 | 3407 if (EQ (which_frames, Qnil)) |
3408 which_frames = Qt; | |
3409 else if (EQ (which_frames, Qt)) | |
3410 which_frames = Qnil; | |
448 | 3411 window_list = list_all_windows (which_frames, which_devices); |
3412 | |
3413 buffer = Fget_buffer (buffer); | |
3414 CHECK_BUFFER (buffer); | |
3415 | |
3416 GCPRO2 (window_list, buffer); | |
3417 LIST_LOOP (tail, window_list) | |
3418 { | |
3419 Lisp_Object window = XCAR (tail); | |
3420 if (!MINI_WINDOW_P (XWINDOW (window)) | |
3421 && EQ (XWINDOW (window)->buffer, buffer)) | |
3422 { | |
3423 Lisp_Object another_buffer = Fother_buffer (buffer, Qnil, Qnil); | |
3424 Lisp_Object frame = WINDOW_FRAME (XWINDOW (window)); | |
3425 if (NILP (another_buffer)) | |
3426 another_buffer = Fget_buffer_create (QSscratch); | |
3427 if (!NILP (XWINDOW (window)->dedicated) | |
3428 && EQ (window, | |
3429 FRAME_ROOT_WINDOW (XFRAME (frame))) | |
1979 | 3430 && (allow_deletion_of_last_visible_frame |
3431 || other_visible_frames (XFRAME (frame)))) | |
448 | 3432 { |
3433 delete_frame_internal (XFRAME (frame), 0, 0, 0); /* GC */ | |
3434 } | |
3435 else | |
3436 { | |
3437 Fset_window_buffer (window, another_buffer, Qnil); | |
3438 if (EQ (window, Fselected_window (Qnil))) | |
3439 Fset_buffer (XWINDOW (window)->buffer); | |
3440 } | |
3441 } | |
3442 } | |
3443 UNGCPRO; | |
428 | 3444 return Qnil; |
3445 } | |
3446 | |
3447 /* The smallest acceptable dimensions for a window. Anything smaller | |
3448 might crash Emacs. */ | |
3449 #define MIN_SAFE_WINDOW_WIDTH (2) | |
3450 #define MIN_SAFE_WINDOW_HEIGHT (2) | |
3451 | |
3452 /* Make sure that window_min_height and window_min_width are | |
3453 not too small; if they are, set them to safe minima. */ | |
3454 | |
3455 static void | |
3456 check_min_window_sizes (void) | |
3457 { | |
3458 /* Smaller values might permit a crash. */ | |
3459 if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
3460 window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
3461 if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
3462 window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
3463 } | |
3464 | |
440 | 3465 static int |
3466 frame_min_height (struct frame *frame) | |
3467 { | |
3468 /* For height, we have to see whether the frame has a minibuffer, and | |
3469 whether it wants a modeline. */ | |
3470 return (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1 | |
3471 : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT | |
3472 : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); | |
3473 } | |
3474 | |
3475 /* Return non-zero if both frame sizes are less than or equal to | |
3476 minimal allowed values. ROWS and COLS are in characters */ | |
3477 int | |
3478 frame_size_valid_p (struct frame *frame, int rows, int cols) | |
3479 { | |
3480 return (rows >= frame_min_height (frame) | |
3481 && cols >= MIN_SAFE_WINDOW_WIDTH); | |
3482 } | |
3483 | |
3484 /* Return non-zero if both frame sizes are less than or equal to | |
3485 minimal allowed values. WIDTH and HEIGHT are in pixels */ | |
3486 int | |
3487 frame_pixsize_valid_p (struct frame *frame, int width, int height) | |
3488 { | |
3489 int rows, cols; | |
3490 pixel_to_real_char_size (frame, width, height, &cols, &rows); | |
3491 return frame_size_valid_p (frame, rows, cols); | |
3492 } | |
3493 | |
428 | 3494 /* If *ROWS or *COLS are too small a size for FRAME, set them to the |
3495 minimum allowable size. */ | |
3496 void | |
3497 check_frame_size (struct frame *frame, int *rows, int *cols) | |
3498 { | |
440 | 3499 int min_height = frame_min_height (frame); |
428 | 3500 |
3501 if (*rows < min_height) | |
3502 *rows = min_height; | |
3503 if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
3504 *cols = MIN_SAFE_WINDOW_WIDTH; | |
3505 } | |
3506 | |
3507 /* Normally the window is deleted if it gets too small. | |
3508 nodelete nonzero means do not do this. | |
3509 (The caller should check later and do so if appropriate) */ | |
3510 static void | |
3511 set_window_pixsize (Lisp_Object window, int new_pixsize, int nodelete, | |
3512 int set_height) | |
3513 { | |
3514 struct window *w = XWINDOW (window); | |
3515 struct frame *f = XFRAME (w->frame); | |
3516 struct window *c; | |
3517 int old_pixsize = (set_height ? WINDOW_HEIGHT (w) : WINDOW_WIDTH (w)); | |
3518 Lisp_Object child, minor_kid, major_kid; | |
3519 int minsize; | |
3520 int line_size; | |
3521 int defheight, defwidth; | |
3522 | |
3523 default_face_height_and_width (window, &defheight, &defwidth); | |
3524 line_size = (set_height ? defheight : defwidth); | |
3525 | |
3526 check_min_window_sizes (); | |
3527 | |
3528 minsize = (set_height ? window_min_height : window_min_width); | |
3529 minsize *= line_size; | |
3530 | |
3531 if (!nodelete | |
3532 && !TOP_LEVEL_WINDOW_P (w) | |
4375
74e0e1131e01
Update window-size computation.
Mike Sperber <sperber@deinprogramm.de>
parents:
3707
diff
changeset
|
3533 && (new_pixsize + window_modeline_height (w)) < minsize) |
428 | 3534 { |
3535 Fdelete_window (window, Qnil); | |
3536 return; | |
3537 } | |
3538 | |
3539 SET_LAST_MODIFIED (w, 0); | |
3540 SET_LAST_FACECHANGE (w); | |
3541 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f); /* multiple windows affected */ | |
3542 if (set_height) | |
3543 { | |
3544 WINDOW_HEIGHT (w) = new_pixsize; | |
3545 major_kid = w->vchild; | |
3546 minor_kid = w->hchild; | |
3547 } | |
3548 else | |
3549 { | |
3550 WINDOW_WIDTH (w) = new_pixsize; | |
3551 major_kid = w->hchild; | |
3552 minor_kid = w->vchild; | |
3553 } | |
3554 | |
3555 if (!NILP (minor_kid)) | |
3556 { | |
3557 for (child = minor_kid; !NILP (child); child = XWINDOW (child)->next) | |
3558 { | |
3559 if (set_height) | |
3560 WINDOW_TOP (XWINDOW (child)) = WINDOW_TOP (w); | |
3561 else | |
3562 WINDOW_LEFT (XWINDOW (child)) = WINDOW_LEFT (w); | |
3563 | |
3564 set_window_pixsize (child, new_pixsize, nodelete, set_height); | |
3565 } | |
3566 } | |
3567 else if (!NILP (major_kid)) | |
3568 { | |
3569 int last_pos, last_old_pos, pos, old_pos, first; | |
3570 int pixel_adj_left = new_pixsize - old_pixsize; | |
3571 int div_val = old_pixsize << 1; | |
3572 | |
3573 /* | |
3574 * Previously we bailed out here if there was no size change. | |
3575 * (pixel_adj_left == 0) But this broke toolbar updates. If a | |
3576 * toolbar appears or disappears, windows may not change size, | |
3577 * but their top and left coordinates need to be updated. | |
3578 * | |
3579 * So we don't bail until after the loop below. | |
3580 */ | |
3581 | |
3582 last_pos = first = (set_height ? WINDOW_TOP (w) : WINDOW_LEFT (w)); | |
3583 last_old_pos = 0; | |
3584 | |
3585 for (child = major_kid; !NILP (child); child = c->next) | |
3586 { | |
3587 c = XWINDOW (child); | |
3588 | |
3589 if (set_height) | |
3590 { | |
3591 old_pos = last_old_pos + WINDOW_HEIGHT (c); | |
3592 WINDOW_TOP (c) = last_pos; | |
3593 } | |
3594 else | |
3595 { | |
3596 old_pos = last_old_pos + WINDOW_WIDTH (c); | |
3597 WINDOW_LEFT (c) = last_pos; | |
3598 } | |
3599 | |
3600 pos = (((old_pos * new_pixsize) << 1) + old_pixsize) / div_val; | |
3601 /* All but the last window should have a height which is | |
3602 a multiple of the default line height. */ | |
3603 if (!NILP (c->next)) | |
4446
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3604 { |
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3605 /* |
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3606 * Round up when we're shrinking, down when we're growing |
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3607 * to make sure that pairs of grow / shrink meant to |
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3608 * cancel out actually do cancel out. |
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3609 */ |
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3610 if (pixel_adj_left < 0) |
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3611 pos = ((pos + line_size -1) / line_size) * line_size; |
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3612 else |
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3613 pos = (pos / line_size) * line_size; |
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3614 } |
428 | 3615 |
3616 /* Avoid confusion: don't delete child if it becomes too small */ | |
3617 set_window_pixsize (child, pos + first - last_pos, 1, set_height); | |
3618 | |
3619 last_pos = pos + first; | |
3620 last_old_pos = old_pos; | |
3621 } | |
3622 | |
3623 /* Sometimes we may get called with our old size. In that case | |
3624 we don't need to do anything else. */ | |
3625 if (!pixel_adj_left) | |
3626 return; | |
3627 | |
3628 /* Now delete any children that became too small. */ | |
3629 if (!nodelete) | |
3630 for (child = major_kid; !NILP (child); child = XWINDOW (child)->next) | |
3631 { | |
3632 if (set_height) | |
3633 set_window_pixheight (child, WINDOW_HEIGHT (XWINDOW (child)), 0); | |
3634 else | |
3635 set_window_pixwidth (child, WINDOW_WIDTH (XWINDOW (child)), 0); | |
3636 } | |
3637 } | |
3638 } | |
3639 | |
3640 /* Set the height of WINDOW and all its inferiors. */ | |
3641 void | |
3642 set_window_pixheight (Lisp_Object window, int new_pixheight, int nodelete) | |
3643 { | |
3644 set_window_pixsize (window, new_pixheight, nodelete, 1); | |
3645 } | |
3646 | |
3647 /* Recursively set width of WINDOW and its inferiors. */ | |
3648 void | |
3649 set_window_pixwidth (Lisp_Object window, int new_pixwidth, int nodelete) | |
3650 { | |
3651 set_window_pixsize (window, new_pixwidth, nodelete, 0); | |
3652 } | |
3653 | |
3654 | |
3655 static int window_select_count; | |
3656 | |
440 | 3657 DEFUN ("set-window-buffer", Fset_window_buffer, 2, 3, 0, /* |
428 | 3658 Make WINDOW display BUFFER as its contents. |
3659 BUFFER can be a buffer or buffer name. | |
440 | 3660 |
442 | 3661 With non-nil optional argument NORECORD, do not modify the |
440 | 3662 global or per-frame buffer ordering. |
428 | 3663 */ |
440 | 3664 (window, buffer, norecord)) |
428 | 3665 { |
3666 Lisp_Object tem; | |
3667 struct window *w = decode_window (window); | |
448 | 3668 int old_buffer_local_face_property = 0; |
428 | 3669 |
3670 buffer = Fget_buffer (buffer); | |
3671 CHECK_BUFFER (buffer); | |
3672 | |
3673 if (!BUFFER_LIVE_P (XBUFFER (buffer))) | |
563 | 3674 invalid_operation ("Attempt to display deleted buffer", Qunbound); |
428 | 3675 |
3676 tem = w->buffer; | |
3677 if (NILP (tem)) | |
563 | 3678 invalid_operation ("Window is deleted", Qunbound); |
428 | 3679 else if (EQ (tem, buffer)) |
3680 return Qnil; | |
3681 else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
3682 is first being set up. */ | |
3683 { | |
3684 if (!NILP (w->dedicated) && !EQ (tem, buffer)) | |
563 | 3685 signal_error (Qinvalid_operation, "Window is dedicated to buffer", tem); |
428 | 3686 |
448 | 3687 old_buffer_local_face_property = |
3688 XBUFFER (w->buffer)->buffer_local_face_property; | |
428 | 3689 unshow_buffer (w); |
3690 } | |
3691 | |
3692 w->buffer = buffer; | |
3693 w->window_end_pos[CURRENT_DISP] = 0; | |
3694 w->hscroll = 0; | |
3695 w->modeline_hscroll = 0; | |
844 | 3696 #if 0 /* pre point caches */ |
428 | 3697 Fset_marker (w->pointm[CURRENT_DISP], |
3698 make_int (BUF_PT (XBUFFER (buffer))), | |
3699 buffer); | |
3700 set_marker_restricted (w->start[CURRENT_DISP], | |
3701 make_int (XBUFFER (buffer)->last_window_start), | |
3702 buffer); | |
844 | 3703 #else |
3704 { | |
3705 Lisp_Object marker = Fgethash (buffer, w->saved_point_cache, Qnil); | |
3706 Lisp_Object newpoint = | |
3707 !NILP (marker) ? make_int (marker_position (marker)) : | |
3708 make_int (BUF_PT (XBUFFER (buffer))); | |
3709 /* Previously, we had in here set-window-point, which did one of the | |
3710 following two, but not both. However, that could result in pointm | |
3711 being in a different buffer from the window's buffer! Probably | |
3712 not a travesty since it always occurred when the window was | |
3713 selected, meaning its value of point was ignored in favor of the | |
3714 buffer's; but it tripped an assert() in unshow_buffer(). */ | |
3715 set_marker_restricted (w->pointm[CURRENT_DISP], newpoint, buffer); | |
3716 if (EQ (wrap_window (w), Fselected_window (Qnil))) | |
3717 Fgoto_char (newpoint, buffer); /* this will automatically clip to | |
3718 accessible */ | |
3719 marker = Fgethash (buffer, w->saved_last_window_start_cache, Qnil); | |
3720 set_marker_restricted (w->start[CURRENT_DISP], | |
3721 !NILP (marker) ? | |
3722 make_int (marker_position (marker)) : | |
3723 make_int (XBUFFER (buffer)->last_window_start), | |
3724 buffer); | |
3725 } | |
3726 #endif | |
3727 | |
428 | 3728 Fset_marker (w->sb_point, w->start[CURRENT_DISP], buffer); |
3729 /* set start_at_line_beg correctly. GE */ | |
844 | 3730 w->start_at_line_beg = |
3731 beginning_of_line_p (XBUFFER (buffer), | |
3732 marker_position (w->start[CURRENT_DISP])); | |
3733 w->force_start = 0; /* XEmacs fix */ | |
428 | 3734 SET_LAST_MODIFIED (w, 1); |
3735 SET_LAST_FACECHANGE (w); | |
3736 MARK_WINDOWS_CHANGED (w); | |
448 | 3737 { |
3738 int new_buffer_local_face_property = | |
3739 XBUFFER (w->buffer)->buffer_local_face_property; | |
3740 | |
3741 if (new_buffer_local_face_property | |
3742 || new_buffer_local_face_property != old_buffer_local_face_property) | |
3743 MARK_WINDOW_FACES_CHANGED (w); | |
3744 } | |
428 | 3745 recompute_all_cached_specifiers_in_window (w); |
3746 if (EQ (window, Fselected_window (Qnil))) | |
3747 { | |
440 | 3748 if (NILP (norecord)) |
3749 Frecord_buffer (buffer); | |
3750 | |
428 | 3751 Fset_buffer (buffer); |
3752 } | |
3753 return Qnil; | |
3754 } | |
3755 | |
3756 DEFUN ("select-window", Fselect_window, 1, 2, 0, /* | |
3757 Select WINDOW. Most editing will apply to WINDOW's buffer. | |
3758 The main editor command loop selects the buffer of the selected window | |
3759 before each command. | |
3760 | |
442 | 3761 With non-nil optional argument NORECORD, do not modify the |
428 | 3762 global or per-frame buffer ordering. |
3763 */ | |
3764 (window, norecord)) | |
3765 { | |
3766 struct window *w; | |
3767 Lisp_Object old_selected_window = Fselected_window (Qnil); | |
3768 | |
3769 CHECK_LIVE_WINDOW (window); | |
3770 w = XWINDOW (window); | |
3771 | |
3772 /* we have already caught dead-window errors */ | |
3773 if (!NILP (w->hchild) || !NILP (w->vchild)) | |
563 | 3774 invalid_operation ("Trying to select non-leaf window", Qunbound); |
428 | 3775 |
3776 w->use_time = make_int (++window_select_count); | |
442 | 3777 |
428 | 3778 if (EQ (window, old_selected_window)) |
3779 return window; | |
3780 | |
3781 /* deselect the old window, if it exists (it might not exist if | |
3782 the selected device has no frames, which occurs at startup) */ | |
3783 if (!NILP (old_selected_window)) | |
3784 { | |
3785 struct window *ow = XWINDOW (old_selected_window); | |
3786 | |
3787 Fset_marker (ow->pointm[CURRENT_DISP], | |
3788 make_int (BUF_PT (XBUFFER (ow->buffer))), | |
3789 ow->buffer); | |
3790 | |
3791 MARK_WINDOWS_CHANGED (ow); | |
3792 } | |
3793 | |
3794 /* now select the window's frame */ | |
3795 set_frame_selected_window (XFRAME (WINDOW_FRAME (w)), window); | |
3796 | |
3797 select_frame_1 (WINDOW_FRAME (w)); | |
3798 | |
3799 /* also select the window's buffer */ | |
3800 if (NILP (norecord)) | |
3801 Frecord_buffer (w->buffer); | |
3802 Fset_buffer (w->buffer); | |
3803 | |
3804 /* Go to the point recorded in the window. | |
3805 This is important when the buffer is in more | |
3806 than one window. It also matters when | |
3807 redisplay_window has altered point after scrolling, | |
3808 because it makes the change only in the window. */ | |
3809 { | |
665 | 3810 Charbpos new_point = marker_position (w->pointm[CURRENT_DISP]); |
428 | 3811 if (new_point < BUF_BEGV (current_buffer)) |
3812 new_point = BUF_BEGV (current_buffer); | |
3813 else if (new_point > BUF_ZV (current_buffer)) | |
3814 new_point = BUF_ZV (current_buffer); | |
3815 | |
3816 BUF_SET_PT (current_buffer, new_point); | |
3817 } | |
3818 | |
3819 MARK_WINDOWS_CHANGED (w); | |
3820 | |
3821 return window; | |
3822 } | |
3823 | |
3824 Lisp_Object | |
3825 display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, | |
3826 Lisp_Object override_frame) | |
3827 { | |
3828 return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); | |
3829 } | |
3830 | |
3831 void | |
3832 temp_output_buffer_show (Lisp_Object buf, Lisp_Object same_frame) | |
3833 { | |
3834 /* This function can GC */ | |
3835 Lisp_Object window; | |
3836 struct window *w; | |
3837 struct buffer *b = XBUFFER (buf); | |
3838 | |
3839 BUF_SAVE_MODIFF (XBUFFER (buf)) = BUF_MODIFF (b); | |
3840 widen_buffer (b, 0); | |
3841 BUF_SET_PT (b, BUF_BEG (b)); | |
3842 | |
3843 if (!NILP (Vtemp_buffer_show_function)) | |
3844 call1 (Vtemp_buffer_show_function, buf); | |
3845 else | |
3846 { | |
3847 window = display_buffer (buf, Qnil, same_frame); | |
3848 | |
3849 if (!EQ (XWINDOW (window)->frame, Fselected_frame (Qnil))) | |
3850 Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
3851 | |
3852 Vminibuffer_scroll_window = window; | |
3853 w = XWINDOW (window); | |
3854 w->hscroll = 0; | |
3855 w->modeline_hscroll = 0; | |
3856 set_marker_restricted (w->start[CURRENT_DISP], make_int (1), buf); | |
3857 set_marker_restricted (w->pointm[CURRENT_DISP], make_int (1), buf); | |
3858 set_marker_restricted (w->sb_point, make_int (1), buf); | |
3859 } | |
3860 } | |
3861 | |
3862 static void | |
3863 make_dummy_parent (Lisp_Object window) | |
3864 { | |
3025 | 3865 Lisp_Object new_; |
428 | 3866 struct window *o = XWINDOW (window); |
3017 | 3867 struct window *p = ALLOC_LCRECORD_TYPE (struct window, &lrecord_window); |
428 | 3868 |
3025 | 3869 new_ = wrap_window (p); |
3017 | 3870 COPY_LCRECORD (p, o); |
428 | 3871 |
3872 /* Don't copy the pointers to the line start cache or the face | |
3873 instances. */ | |
3874 p->line_start_cache = Dynarr_new (line_start_cache); | |
3092 | 3875 #ifdef NEW_GC |
3876 p->face_cachels = Dynarr_lisp_new (face_cachel, | |
3877 &lrecord_face_cachel_dynarr, | |
3878 &lrecord_face_cachel); | |
3879 p->glyph_cachels = Dynarr_lisp_new (glyph_cachel, | |
3880 &lrecord_glyph_cachel_dynarr, | |
3881 &lrecord_glyph_cachel); | |
3882 #else /* not NEW_GC */ | |
428 | 3883 p->face_cachels = Dynarr_new (face_cachel); |
3884 p->glyph_cachels = Dynarr_new (glyph_cachel); | |
3092 | 3885 #endif /* not NEW_GC */ |
442 | 3886 p->subwindow_instance_cache = |
450 | 3887 make_image_instance_cache_hash_table (); |
428 | 3888 |
3889 /* Put new into window structure in place of window */ | |
3025 | 3890 replace_window (window, new_); |
428 | 3891 |
3892 o->next = Qnil; | |
3893 o->prev = Qnil; | |
3894 o->vchild = Qnil; | |
3895 o->hchild = Qnil; | |
3025 | 3896 o->parent = new_; |
428 | 3897 |
3898 p->start[CURRENT_DISP] = Qnil; | |
3899 p->start[DESIRED_DISP] = Qnil; | |
3900 p->start[CMOTION_DISP] = Qnil; | |
3901 p->pointm[CURRENT_DISP] = Qnil; | |
3902 p->pointm[DESIRED_DISP] = Qnil; | |
3903 p->pointm[CMOTION_DISP] = Qnil; | |
3904 p->sb_point = Qnil; | |
844 | 3905 p->saved_point_cache = make_saved_buffer_point_cache (); |
3906 p->saved_last_window_start_cache = make_saved_buffer_point_cache (); | |
428 | 3907 p->buffer = Qnil; |
3908 } | |
3909 | |
3910 DEFUN ("split-window", Fsplit_window, 0, 3, "", /* | |
3911 Split WINDOW, putting SIZE lines in the first of the pair. | |
444 | 3912 WINDOW defaults to the selected one and SIZE to half its size. |
707 | 3913 If optional third arg HORFLAG is non-nil, split side by side and put |
3914 SIZE columns in the first of the pair. The newly created window is | |
3915 returned. | |
428 | 3916 */ |
444 | 3917 (window, size, horflag)) |
428 | 3918 { |
3025 | 3919 Lisp_Object new_; |
428 | 3920 struct window *o, *p; |
3921 struct frame *f; | |
444 | 3922 int csize; |
428 | 3923 int psize; |
3924 | |
3925 if (NILP (window)) | |
3926 window = Fselected_window (Qnil); | |
3927 else | |
3928 CHECK_LIVE_WINDOW (window); | |
3929 | |
3930 o = XWINDOW (window); | |
3931 f = XFRAME (WINDOW_FRAME (o)); | |
3932 | |
444 | 3933 if (NILP (size)) |
428 | 3934 { |
3935 if (!NILP (horflag)) | |
3936 /* In the new scheme, we are symmetric with respect to separators | |
3937 so there is no need to do weird things here. */ | |
3938 { | |
956 | 3939 psize = (WINDOW_WIDTH (o) + window_divider_width (o)) >> 1; |
444 | 3940 csize = window_pixel_width_to_char_width (o, psize, 0); |
428 | 3941 } |
3942 else | |
3943 { | |
3944 psize = WINDOW_HEIGHT (o) >> 1; | |
444 | 3945 csize = window_pixel_height_to_char_height (o, psize, 1); |
428 | 3946 } |
3947 } | |
3948 else | |
3949 { | |
444 | 3950 CHECK_INT (size); |
3951 csize = XINT (size); | |
428 | 3952 if (!NILP (horflag)) |
444 | 3953 psize = window_char_width_to_pixel_width (o, csize, 0); |
428 | 3954 else |
444 | 3955 psize = window_char_height_to_pixel_height (o, csize, 1); |
428 | 3956 } |
3957 | |
3958 if (MINI_WINDOW_P (o)) | |
563 | 3959 invalid_operation ("Attempt to split minibuffer window", Qunbound); |
428 | 3960 else if (FRAME_NO_SPLIT_P (XFRAME (WINDOW_FRAME (o)))) |
563 | 3961 invalid_operation ("Attempt to split unsplittable frame", Qunbound); |
428 | 3962 |
3963 check_min_window_sizes (); | |
3964 | |
3965 if (NILP (horflag)) | |
3966 { | |
444 | 3967 if (csize < window_min_height) |
563 | 3968 signal_error (Qinvalid_operation, "Window height too small (after splitting)", make_int (csize)); |
444 | 3969 if (csize + window_min_height > window_char_height (o, 1)) |
563 | 3970 signal_error (Qinvalid_operation, "Window height too small (after splitting)", |
3971 make_int (window_char_height (o, 1) - csize)); | |
428 | 3972 if (NILP (o->parent) |
3973 || NILP (XWINDOW (o->parent)->vchild)) | |
3974 { | |
3975 make_dummy_parent (window); | |
448 | 3976 #if 0 |
3977 /* #### I can't understand why you have to reset face | |
3978 cachels here. This can cause crash so let's disable it | |
3979 and see the difference. See redisplay-tests.el --yh */ | |
428 | 3980 reset_face_cachels (XWINDOW (window)); |
448 | 3981 #endif |
3025 | 3982 new_ = o->parent; |
3983 XWINDOW (new_)->vchild = window; | |
428 | 3984 XFRAME (o->frame)->mirror_dirty = 1; |
3985 } | |
3986 } | |
3987 else | |
3988 { | |
444 | 3989 if (csize < window_min_width) |
563 | 3990 signal_error (Qinvalid_operation, "Window width too small (after splitting)", make_int (csize)); |
444 | 3991 if (csize + window_min_width > window_char_width (o, 0)) |
563 | 3992 signal_error (Qinvalid_operation, "Window width too small (after splitting)", |
3993 make_int (window_char_width (o, 0) - csize)); | |
428 | 3994 if (NILP (o->parent) |
3995 || NILP (XWINDOW (o->parent)->hchild)) | |
3996 { | |
3997 make_dummy_parent (window); | |
448 | 3998 #if 0 |
3999 /* #### See above. */ | |
428 | 4000 reset_face_cachels (XWINDOW (window)); |
448 | 4001 #endif |
3025 | 4002 new_ = o->parent; |
4003 XWINDOW (new_)->hchild = window; | |
428 | 4004 XFRAME (o->frame)->mirror_dirty = 1; |
4005 } | |
4006 } | |
4007 | |
4008 /* Now we know that window's parent is a vertical combination | |
4009 if we are dividing vertically, or a horizontal combination | |
4010 if we are making side-by-side windows */ | |
4011 | |
4012 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f); | |
3025 | 4013 new_ = allocate_window (); |
4014 p = XWINDOW (new_); | |
428 | 4015 |
4016 p->frame = o->frame; | |
4017 p->next = o->next; | |
4018 if (!NILP (p->next)) | |
3025 | 4019 XWINDOW (p->next)->prev = new_; |
428 | 4020 p->prev = window; |
3025 | 4021 o->next = new_; |
428 | 4022 p->parent = o->parent; |
4023 p->buffer = Qt; | |
4024 | |
4025 reset_face_cachels (p); | |
4026 reset_glyph_cachels (p); | |
4027 | |
4028 | |
4029 /* Apportion the available frame space among the two new windows */ | |
4030 | |
4031 if (!NILP (horflag)) | |
4032 { | |
4033 WINDOW_HEIGHT (p) = WINDOW_HEIGHT (o); | |
4034 WINDOW_TOP (p) = WINDOW_TOP (o); | |
4035 WINDOW_WIDTH (p) = WINDOW_WIDTH (o) - psize; | |
4036 WINDOW_WIDTH (o) = psize; | |
4037 WINDOW_LEFT (p) = WINDOW_LEFT (o) + psize; | |
4038 } | |
4039 else | |
4040 { | |
4041 WINDOW_LEFT (p) = WINDOW_LEFT (o); | |
4042 WINDOW_WIDTH (p) = WINDOW_WIDTH (o); | |
4043 WINDOW_HEIGHT (p) = WINDOW_HEIGHT (o) - psize; | |
4044 WINDOW_HEIGHT (o) = psize; | |
4045 WINDOW_TOP (p) = WINDOW_TOP (o) + psize; | |
4046 } | |
4047 | |
4048 XFRAME (p->frame)->mirror_dirty = 1; | |
853 | 4049 |
3025 | 4050 note_object_created (new_); |
853 | 4051 |
428 | 4052 /* do this last (after the window is completely initialized and |
4053 the mirror-dirty flag is set) so that specifier recomputation | |
4054 caused as a result of this will work properly and not abort. */ | |
3025 | 4055 Fset_window_buffer (new_, o->buffer, Qt); |
4056 return new_; | |
428 | 4057 } |
4058 | |
4059 | |
4060 DEFUN ("enlarge-window", Fenlarge_window, 1, 3, "_p", /* | |
444 | 4061 Make the selected window COUNT lines taller. |
4062 From program, optional second arg HORIZONTALP non-nil means grow | |
4063 sideways COUNT columns, and optional third arg WINDOW specifies the | |
4064 window to change instead of the selected window. | |
428 | 4065 */ |
444 | 4066 (count, horizontalp, window)) |
4067 { | |
4068 CHECK_INT (count); | |
4069 change_window_height (window, XINT (count), horizontalp, /* inpixels */ 0); | |
428 | 4070 return Qnil; |
4071 } | |
4072 | |
4073 DEFUN ("enlarge-window-pixels", Fenlarge_window_pixels, 1, 3, "_p", /* | |
444 | 4074 Make the selected window COUNT pixels taller. |
4075 From program, optional second arg HORIZONTALP non-nil means grow | |
4076 sideways COUNT pixels, and optional third arg WINDOW specifies the | |
4077 window to change instead of the selected window. | |
428 | 4078 */ |
444 | 4079 (count, horizontalp, window)) |
4080 { | |
4081 CHECK_INT (count); | |
4082 change_window_height (window, XINT (count), horizontalp, /* inpixels */ 1); | |
428 | 4083 return Qnil; |
4084 } | |
4085 | |
4086 DEFUN ("shrink-window", Fshrink_window, 1, 3, "_p", /* | |
444 | 4087 Make the selected window COUNT lines shorter. |
4088 From program, optional second arg HORIZONTALP non-nil means shrink | |
4089 sideways COUNT columns, and optional third arg WINDOW specifies the | |
4090 window to change instead of the selected window. | |
428 | 4091 */ |
444 | 4092 (count, horizontalp, window)) |
4093 { | |
4094 CHECK_INT (count); | |
4095 change_window_height (window, -XINT (count), horizontalp, /* inpixels */ 0); | |
428 | 4096 return Qnil; |
4097 } | |
4098 | |
4099 DEFUN ("shrink-window-pixels", Fshrink_window_pixels, 1, 3, "_p", /* | |
444 | 4100 Make the selected window COUNT pixels smaller. |
4101 From program, optional second arg HORIZONTALP non-nil means shrink | |
4102 sideways COUNT pixels, and optional third arg WINDOW specifies the | |
4103 window to change instead of the selected window. | |
428 | 4104 */ |
444 | 4105 (count, horizontalp, window)) |
4106 { | |
4107 CHECK_INT (count); | |
4108 change_window_height (window, -XINT (count), horizontalp, /* inpixels */ 1); | |
428 | 4109 return Qnil; |
4110 } | |
4111 | |
4112 static int | |
4113 window_pixel_height_to_char_height (struct window *w, int pixel_height, | |
4114 int include_gutters_p) | |
4115 { | |
4116 int avail_height; | |
4117 int defheight, defwidth; | |
3687 | 4118 int char_height = 0; |
793 | 4119 Lisp_Object window = wrap_window (w); |
4120 | |
428 | 4121 |
4122 avail_height = (pixel_height - | |
4123 (include_gutters_p ? 0 : | |
442 | 4124 window_top_window_gutter_height (w) + |
4125 window_bottom_window_gutter_height (w))); | |
428 | 4126 |
4127 default_face_height_and_width (window, &defheight, &defwidth); | |
4128 | |
3687 | 4129 if (defheight) |
4130 char_height = avail_height / defheight; | |
428 | 4131 |
4132 /* It's the calling function's responsibility to check these values | |
4133 and make sure they're not out of range. | |
4134 | |
4135 #### We need to go through the calling functions and actually | |
4136 do this. */ | |
4137 return max (0, char_height); | |
4138 } | |
4139 | |
4140 static int | |
4141 window_char_height_to_pixel_height (struct window *w, int char_height, | |
4142 int include_gutters_p) | |
4143 { | |
4144 int avail_height; | |
4145 int defheight, defwidth; | |
4146 int pixel_height; | |
4147 | |
793 | 4148 Lisp_Object window = wrap_window (w); |
4149 | |
428 | 4150 |
4151 default_face_height_and_width (window, &defheight, &defwidth); | |
4152 | |
4153 avail_height = char_height * defheight; | |
4154 pixel_height = (avail_height + | |
4155 (include_gutters_p ? 0 : | |
442 | 4156 window_top_window_gutter_height (w) + |
4157 window_bottom_window_gutter_height (w))); | |
428 | 4158 |
4159 /* It's the calling function's responsibility to check these values | |
4160 and make sure they're not out of range. | |
4161 | |
4162 #### We need to go through the calling functions and actually | |
4163 do this. */ | |
4164 return max (0, pixel_height); | |
4165 } | |
4166 | |
4167 /* Return number of default lines of text can fit in the window W. | |
4168 If INCLUDE_GUTTERS_P is 1, include "gutter" space (modeline plus | |
4169 horizontal scrollbar) in the space that is used for the calculation. | |
442 | 4170 This doesn't include space used by the frame gutters. |
428 | 4171 */ |
4172 int | |
4173 window_char_height (struct window *w, int include_gutters_p) | |
4174 { | |
442 | 4175 return window_pixel_height_to_char_height (w, window_pixel_height (w), |
428 | 4176 include_gutters_p); |
4177 } | |
4178 | |
4179 /* | |
4180 * Return number of lines currently displayed in window w. If | |
4181 * end-of-buffer is displayed then the area below end-of-buffer is assume | |
4182 * to be blank lines of default height. | |
4183 * Does not include the modeline. | |
4184 */ | |
4185 int | |
4186 window_displayed_height (struct window *w) | |
4187 { | |
4188 struct buffer *b = XBUFFER (w->buffer); | |
4189 display_line_dynarr *dla = window_display_lines (w, CURRENT_DISP); | |
4190 int num_lines; | |
4191 Charcount end_pos = (BUF_Z (b) - w->window_end_pos[CURRENT_DISP] > BUF_ZV (b) | |
4192 ? -1 | |
4193 : w->window_end_pos[CURRENT_DISP]); | |
4194 | |
4195 if (!Dynarr_length (dla)) | |
4196 return window_char_height (w, 0); | |
4197 | |
4198 num_lines = Dynarr_length (dla); | |
4199 | |
4200 /* #### Document and assert somewhere that w->window_end_pos == -1 | |
4201 indicates that end-of-buffer is being displayed. */ | |
4202 if (end_pos == -1) | |
4203 { | |
4204 struct display_line *dl = Dynarr_atp (dla, 0); | |
4205 int ypos1 = dl->ypos + dl->descent; | |
4206 int ypos2 = WINDOW_TEXT_BOTTOM (w); | |
4207 Lisp_Object window; | |
4208 int defheight, defwidth; | |
4209 | |
793 | 4210 window = wrap_window (w); |
428 | 4211 |
4212 if (dl->modeline) | |
4213 { | |
4214 num_lines--; | |
4215 | |
4216 if (Dynarr_length (dla) == 1) | |
4217 ypos1 = WINDOW_TEXT_TOP (w); | |
4218 else | |
4219 { | |
4220 dl = Dynarr_atp (dla, Dynarr_length (dla) - 1); | |
4221 /* If this line is clipped then we know that there is no | |
4222 blank room between eob and the modeline. If we are | |
4223 scrolling on clipped lines just know off the clipped | |
4224 line and return .*/ | |
4225 if (scroll_on_clipped_lines && dl->clip) | |
4226 return num_lines - 1; | |
4227 ypos1 = dl->ypos + dl->descent - dl->clip; | |
4228 } | |
4229 } | |
4230 | |
4231 default_face_height_and_width (window, &defheight, &defwidth); | |
4232 /* #### This probably needs to know about the clipping area once a | |
4233 final definition is decided on. */ | |
3707 | 4234 if (defheight) |
4235 num_lines += ((ypos2 - ypos1) / defheight); | |
428 | 4236 } |
4237 else | |
4238 { | |
4239 if (num_lines > 1 && Dynarr_atp (dla, 0)->modeline) | |
4240 num_lines--; | |
4241 | |
4242 if (scroll_on_clipped_lines | |
4243 && Dynarr_atp (dla, Dynarr_length (dla) - 1)->clip) | |
4244 num_lines--; | |
4245 } | |
4246 | |
4247 return num_lines; | |
4248 } | |
4249 | |
4250 static int | |
4251 window_pixel_width (Lisp_Object window) | |
4252 { | |
4253 return WINDOW_WIDTH (XWINDOW (window)); | |
4254 } | |
4255 | |
442 | 4256 /* Calculate the pixel of a window, optionally including margin space |
4257 but no vertical gutters. */ | |
428 | 4258 static int |
4259 window_pixel_width_to_char_width (struct window *w, int pixel_width, | |
4260 int include_margins_p) | |
4261 { | |
4262 int avail_width; | |
3676 | 4263 int char_width = 0; |
428 | 4264 int defheight, defwidth; |
793 | 4265 Lisp_Object window = wrap_window (w); |
4266 | |
428 | 4267 |
4268 avail_width = (pixel_width - | |
4269 window_left_gutter_width (w, 0) - | |
4270 window_right_gutter_width (w, 0) - | |
4271 (include_margins_p ? 0 : window_left_margin_width (w)) - | |
4272 (include_margins_p ? 0 : window_right_margin_width (w))); | |
4273 | |
4274 default_face_height_and_width (window, &defheight, &defwidth); | |
4275 | |
3676 | 4276 if (defwidth) |
4277 char_width = (avail_width / defwidth); | |
428 | 4278 |
4279 /* It's the calling function's responsibility to check these values | |
4280 and make sure they're not out of range. | |
4281 | |
4282 #### We need to go through the calling functions and actually | |
4283 do this. */ | |
4284 return max (0, char_width); | |
4285 } | |
4286 | |
4287 static int | |
4288 window_char_width_to_pixel_width (struct window *w, int char_width, | |
4289 int include_margins_p) | |
4290 { | |
4291 int avail_width; | |
4292 int pixel_width; | |
4293 int defheight, defwidth; | |
793 | 4294 Lisp_Object window = wrap_window (w); |
4295 | |
428 | 4296 |
4297 default_face_height_and_width (window, &defheight, &defwidth); | |
4298 | |
4299 avail_width = char_width * defwidth; | |
4300 pixel_width = (avail_width + | |
442 | 4301 window_left_window_gutter_width (w, 0) + |
4302 window_right_window_gutter_width (w, 0) + | |
428 | 4303 (include_margins_p ? 0 : window_left_margin_width (w)) + |
4304 (include_margins_p ? 0 : window_right_margin_width (w))); | |
4305 | |
4306 /* It's the calling function's responsibility to check these values | |
4307 and make sure they're not out of range. | |
4308 | |
4309 #### We need to go through the calling functions and actually | |
4310 do this. */ | |
4311 return max (0, pixel_width); | |
4312 } | |
4313 | |
4314 /* This returns the usable space which doesn't include space needed by | |
4315 scrollbars or divider lines. */ | |
4316 int | |
4317 window_char_width (struct window *w, int include_margins_p) | |
4318 { | |
4319 return window_pixel_width_to_char_width (w, WINDOW_WIDTH (w), | |
4320 include_margins_p); | |
4321 } | |
4322 | |
4323 #define MINSIZE(w) \ | |
4324 (widthflag \ | |
4325 ? window_min_width * defwidth \ | |
4326 : (defheight * (MINI_WINDOW_P (XWINDOW (w)) ? 1 : window_min_height))) | |
4327 | |
4328 #define CURBEG(w) \ | |
4329 *(widthflag ? (int *) &WINDOW_LEFT (w) : (int *) &WINDOW_TOP (w)) | |
4330 | |
4331 #define CURSIZE(w) \ | |
4332 *(widthflag ? (int *) &WINDOW_WIDTH (w) : (int *) &WINDOW_HEIGHT (w)) | |
4333 | |
4334 #define CURCHARSIZE(w) \ | |
4335 (widthflag ? window_char_width (w, 0) : window_char_height (w, 1)) | |
4336 | |
4337 #define MINCHARSIZE(window) \ | |
4338 (widthflag ? window_min_width : MINI_WINDOW_P (XWINDOW (window)) \ | |
4339 ? 1 : window_min_height) | |
4340 | |
442 | 4341 static int |
4342 window_pixheight (Lisp_Object w) | |
4343 { | |
4344 return window_pixel_height (XWINDOW (w)); | |
4345 } | |
4346 | |
428 | 4347 /* Unlike set_window_pixheight, this function |
4348 also changes the heights of the siblings so as to | |
4349 keep everything consistent. */ | |
4350 | |
4351 static void | |
444 | 4352 change_window_height (Lisp_Object window, int delta, Lisp_Object horizontalp, |
428 | 4353 int inpixels) |
4354 { | |
444 | 4355 struct window *win = decode_window (window); |
4356 int widthflag = !NILP (horizontalp); | |
428 | 4357 Lisp_Object parent; |
4358 struct window *w; | |
4359 struct frame *f; | |
4360 int *sizep; | |
4361 int (*sizefun) (Lisp_Object) = (widthflag | |
4362 ? window_pixel_width | |
442 | 4363 : window_pixheight); |
428 | 4364 void (*setsizefun) (Lisp_Object, int, int) = (widthflag |
4365 ? set_window_pixwidth | |
4366 : set_window_pixheight); | |
4367 int dim; | |
4368 int defheight, defwidth; | |
4369 | |
4370 if (delta == 0) | |
4371 return; | |
4372 | |
4373 check_min_window_sizes (); | |
4374 | |
793 | 4375 window = wrap_window (win); |
428 | 4376 f = XFRAME (win->frame); |
4377 if (EQ (window, FRAME_ROOT_WINDOW (f))) | |
563 | 4378 invalid_operation ("Won't change only window", Qunbound); |
428 | 4379 |
4380 default_face_height_and_width (window, &defheight, &defwidth); | |
4381 | |
4382 while (1) | |
4383 { | |
4384 w = XWINDOW (window); | |
4385 parent = w->parent; | |
4386 if (NILP (parent)) | |
4387 { | |
4388 if (widthflag) | |
3078 | 4389 { |
4390 int new_pixsize; | |
4391 sizep = &CURSIZE (w); | |
3466 | 4392 dim = CURCHARSIZE (w); |
3078 | 4393 new_pixsize = inpixels?(*sizep + delta):(dim+delta); |
4394 set_window_pixsize (window, new_pixsize, 0, 0); | |
4395 return; | |
4396 } | |
428 | 4397 break; |
4398 } | |
4399 if (widthflag | |
4400 ? !NILP (XWINDOW (parent)->hchild) | |
4401 : !NILP (XWINDOW (parent)->vchild)) | |
4402 break; | |
4403 window = parent; | |
4404 } | |
4405 | |
4406 sizep = &CURSIZE (w); | |
4407 dim = CURCHARSIZE (w); | |
4408 | |
4409 if ((inpixels && (*sizep + delta) < MINSIZE (window)) || | |
4410 (!inpixels && (dim + delta) < MINCHARSIZE (window))) | |
4411 { | |
4412 if (MINI_WINDOW_P (XWINDOW (window))) | |
4413 return; | |
4414 else if (!NILP (parent)) | |
4415 { | |
4416 Fdelete_window (window, Qnil); | |
4417 return; | |
4418 } | |
4419 } | |
4420 | |
4421 if (!inpixels) | |
4422 delta *= (widthflag ? defwidth : defheight); | |
4423 | |
4424 { | |
4425 int maxdelta; | |
4426 | |
4427 maxdelta = ((!NILP (parent)) | |
4428 ? (*sizefun) (parent) - *sizep | |
4429 : ((!NILP (w->next)) | |
4430 ? (*sizefun) (w->next) - MINSIZE (w->next) | |
4431 : ((!NILP (w->prev)) | |
4432 ? (*sizefun) (w->prev) - MINSIZE (w->prev) | |
4433 /* This is a frame with only one window, | |
4434 a minibuffer-only or a minibufferless frame. */ | |
4435 : (delta = 0)))); | |
4436 | |
4437 if (delta > maxdelta) | |
4438 /* This case traps trying to make the minibuffer | |
4439 the full frame, or make the only window aside from the | |
4440 minibuffer the full frame. */ | |
4441 delta = maxdelta; | |
4442 | |
4443 if (delta == 0) | |
4444 return; | |
4445 | |
4446 #if 0 /* FSFmacs */ | |
4447 /* #### Chuck: is this correct? */ | |
4448 if (*sizep + delta < MINSIZE (window)) | |
4449 { | |
4450 Fdelete_window (window); | |
4451 return; | |
4452 } | |
4453 #endif | |
4454 } | |
4455 | |
4456 if (!NILP (w->next) && | |
4457 (*sizefun) (w->next) - delta >= (int) MINSIZE (w->next)) | |
4458 { | |
4459 CURBEG (XWINDOW (w->next)) += delta; | |
4460 (*setsizefun) (w->next, (*sizefun) (w->next) - delta, 0); | |
4461 (*setsizefun) (window, *sizep + delta, 0); | |
4462 } | |
4463 else if (!NILP (w->prev) && | |
4464 (*sizefun) (w->prev) - delta >= (int) MINSIZE (w->prev)) | |
4465 { | |
4466 (*setsizefun) (w->prev, (*sizefun) (w->prev) - delta, 0); | |
4467 CURBEG (w) -= delta; | |
4468 (*setsizefun) (window, *sizep + delta, 0); | |
4469 } | |
4470 else | |
4471 { | |
4472 int delta1; | |
4473 int opht = (*sizefun) (parent); | |
4474 | |
4475 /* If trying to grow this window to or beyond size of the parent, | |
4476 make delta1 so big that, on shrinking back down, | |
4477 all the siblings end up with less than one line and are deleted. */ | |
4478 if (opht <= *sizep + delta) | |
4479 delta1 = opht * opht * 2; | |
4480 /* Otherwise, make delta1 just right so that if we add delta1 | |
4481 lines to this window and to the parent, and then shrink | |
4482 the parent back to its original size, the new proportional | |
4483 size of this window will increase by delta. */ | |
4484 else | |
4485 delta1 = (delta * opht * 100) / ((opht - *sizep - delta) * 100); | |
4486 | |
4487 /* Add delta1 lines or columns to this window, and to the parent, | |
4488 keeping things consistent while not affecting siblings. */ | |
4489 CURSIZE (XWINDOW (parent)) = opht + delta1; | |
4490 (*setsizefun) (window, *sizep + delta1, 0); | |
4491 | |
4492 /* Squeeze out delta1 lines or columns from our parent, | |
4493 shrinking this window and siblings proportionately. | |
4494 This brings parent back to correct size. | |
4495 Delta1 was calculated so this makes this window the desired size, | |
4496 taking it all out of the siblings. */ | |
4497 (*setsizefun) (parent, opht, 0); | |
4498 } | |
4499 | |
4500 SET_LAST_MODIFIED (w, 0); | |
4501 SET_LAST_FACECHANGE (w); | |
4502 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f); | |
4503 /* overkill maybe, but better to be correct */ | |
4504 MARK_FRAME_GUTTERS_CHANGED (f); | |
4505 } | |
4506 #undef MINSIZE | |
4507 #undef CURBEG | |
4508 #undef CURSIZE | |
4509 #undef CURCHARSIZE | |
4510 #undef MINCHARSIZE | |
4511 | |
4512 | |
4513 | |
444 | 4514 /* Scroll contents of window WINDOW up COUNT lines. |
4515 If COUNT < (top line height / average line height) then we just adjust | |
4516 the top clip. */ | |
428 | 4517 void |
444 | 4518 window_scroll (Lisp_Object window, Lisp_Object count, int direction, |
578 | 4519 Error_Behavior errb) |
428 | 4520 { |
4521 struct window *w = XWINDOW (window); | |
4522 struct buffer *b = XBUFFER (w->buffer); | |
4523 int selected = EQ (window, Fselected_window (Qnil)); | |
4524 int value = 0; | |
4525 Lisp_Object point, tem; | |
4526 display_line_dynarr *dla; | |
4527 int fheight, fwidth, modeline = 0; | |
4528 struct display_line* dl; | |
4529 | |
4530 if (selected) | |
4531 point = make_int (BUF_PT (b)); | |
4532 else | |
4533 { | |
665 | 4534 Charbpos pos = marker_position (w->pointm[CURRENT_DISP]); |
428 | 4535 |
4536 if (pos < BUF_BEGV (b)) | |
4537 pos = BUF_BEGV (b); | |
4538 else if (pos > BUF_ZV (b)) | |
4539 pos = BUF_ZV (b); | |
4540 | |
4541 point = make_int (pos); | |
4542 } | |
4543 | |
4544 /* Always set force_start so that redisplay_window will run | |
4545 the window-scroll-functions. */ | |
4546 w->force_start = 1; | |
4547 | |
4548 /* #### When the fuck does this happen? I'm so glad that history has | |
4549 completely documented the behavior of the scrolling functions under | |
4550 all circumstances. */ | |
1708 | 4551 tem = Fpos_visible_in_window_p (point, window, Qnil); |
428 | 4552 if (NILP (tem)) |
4553 { | |
4554 Fvertical_motion (make_int (-window_char_height (w, 0) / 2), | |
4555 window, Qnil); | |
4556 Fset_marker (w->start[CURRENT_DISP], point, w->buffer); | |
4557 w->start_at_line_beg = beginning_of_line_p (b, XINT (point)); | |
4558 WINDOW_TEXT_TOP_CLIP (w) = 0; | |
4559 MARK_WINDOWS_CHANGED (w); | |
4560 } | |
4561 | |
444 | 4562 if (!NILP (count)) |
428 | 4563 { |
444 | 4564 if (EQ (count, Qminus)) |
428 | 4565 direction *= -1; |
4566 else | |
4567 { | |
444 | 4568 count = Fprefix_numeric_value (count); |
4569 value = XINT (count) * direction; | |
428 | 4570 |
4571 if (!value) | |
4572 return; /* someone just made a pointless call */ | |
4573 } | |
4574 } | |
4575 | |
4576 /* If the user didn't specify how far to scroll then we have to figure it | |
4577 out by ourselves. */ | |
444 | 4578 if (NILP (count) || EQ (count, Qminus)) |
428 | 4579 { |
4580 /* Going forwards is easy. If that is what we are doing then just | |
4581 set value and the section which handles the user specifying a | |
4582 positive value will work. */ | |
4583 if (direction == 1) | |
4584 { | |
4585 value = window_displayed_height (w) - next_screen_context_lines; | |
4586 value = (value < 1 ? 1 : value); | |
4587 } | |
4588 | |
4589 /* Going backwards is hard. We can't use the same loop used if the | |
4590 user specified a negative value because we care about | |
4591 next_screen_context_lines. In a variable height world you don't | |
4592 know how many lines above you can actually be displayed and still | |
4593 have the context lines appear. So we leave value set to 0 and add | |
4594 a separate section to deal with this. */ | |
4595 | |
4596 } | |
4597 | |
4598 if (direction == 1 && !value) | |
4599 { | |
4600 return; | |
4601 } | |
4602 | |
4603 /* Determine parameters to test for partial line scrolling with. */ | |
4604 dla = window_display_lines (w, CURRENT_DISP); | |
4605 | |
4606 if (INTP (Vwindow_pixel_scroll_increment)) | |
4607 fheight = XINT (Vwindow_pixel_scroll_increment); | |
440 | 4608 else if (!NILP (Vwindow_pixel_scroll_increment)) |
428 | 4609 default_face_height_and_width (window, &fheight, &fwidth); |
438 | 4610 |
428 | 4611 if (Dynarr_length (dla) >= 1) |
4612 modeline = Dynarr_atp (dla, 0)->modeline; | |
4613 | |
4614 dl = Dynarr_atp (dla, modeline); | |
438 | 4615 |
428 | 4616 if (value > 0) |
4617 { | |
4618 /* Go for partial display line scrolling. This just means bumping | |
4619 the clip by a reasonable amount and redisplaying, everything else | |
4620 remains unchanged. */ | |
4621 if (!NILP (Vwindow_pixel_scroll_increment) | |
4622 && | |
4623 Dynarr_length (dla) >= (1 + modeline) | |
4624 && | |
458 | 4625 (dl->ascent - dl->top_clip) > fheight * value) |
428 | 4626 { |
4627 WINDOW_TEXT_TOP_CLIP (w) += value * fheight; | |
4628 MARK_WINDOWS_CHANGED (w); | |
4629 } | |
4630 else | |
4631 { | |
4632 int vtarget; | |
665 | 4633 Charbpos startp, old_start; |
438 | 4634 |
428 | 4635 if (WINDOW_TEXT_TOP_CLIP (w)) |
4636 { | |
4637 WINDOW_TEXT_TOP_CLIP (w) = 0; | |
4638 MARK_WINDOWS_CHANGED (w); | |
4639 } | |
4640 | |
4641 old_start = marker_position (w->start[CURRENT_DISP]); | |
4642 startp = vmotion (w, old_start, value, &vtarget); | |
438 | 4643 |
428 | 4644 if (vtarget < value && |
4645 (w->window_end_pos[CURRENT_DISP] == -1 | |
4646 || (BUF_Z (b) - w->window_end_pos[CURRENT_DISP] > BUF_ZV (b)))) | |
4647 { | |
563 | 4648 maybe_signal_error_1 (Qend_of_buffer, Qnil, Qwindow, errb); |
428 | 4649 return; |
4650 } | |
4651 else | |
4652 { | |
4653 set_marker_restricted (w->start[CURRENT_DISP], make_int (startp), | |
4654 w->buffer); | |
4655 w->force_start = 1; | |
4656 w->start_at_line_beg = beginning_of_line_p (b, startp); | |
4657 MARK_WINDOWS_CHANGED (w); | |
438 | 4658 |
1708 | 4659 if (!point_would_be_visible (w, startp, XINT (point), 0)) |
844 | 4660 Fset_window_point (wrap_window (w), make_int (startp)); |
428 | 4661 } |
4662 } | |
4663 } | |
4664 else if (value < 0) | |
4665 { | |
4666 /* Go for partial display line scrolling. This just means bumping | |
4667 the clip by a reasonable amount and redisplaying, everything else | |
4668 remains unchanged. */ | |
4669 if (!NILP (Vwindow_pixel_scroll_increment) | |
4670 && | |
4671 Dynarr_length (dla) >= (1 + modeline) | |
4672 && | |
4673 (dl->ascent - dl->top_clip) - fheight * value < | |
4674 (dl->ascent + dl->descent - dl->clip) | |
4675 && | |
4676 WINDOW_TEXT_TOP_CLIP (w) + value * fheight > 0) | |
4677 { | |
4678 WINDOW_TEXT_TOP_CLIP (w) += value * fheight; | |
4679 MARK_WINDOWS_CHANGED (w); | |
4680 } | |
4681 else | |
4682 { | |
4683 int vtarget; | |
665 | 4684 Charbpos startp, old_start; |
438 | 4685 |
428 | 4686 if (WINDOW_TEXT_TOP_CLIP (w)) |
4687 { | |
4688 WINDOW_TEXT_TOP_CLIP (w) = 0; | |
4689 MARK_WINDOWS_CHANGED (w); | |
4690 } | |
438 | 4691 |
428 | 4692 old_start = marker_position (w->start[CURRENT_DISP]); |
4693 startp = vmotion (w, old_start, value, &vtarget); | |
438 | 4694 |
428 | 4695 if (vtarget > value |
4696 && marker_position (w->start[CURRENT_DISP]) == BUF_BEGV (b)) | |
4697 { | |
563 | 4698 maybe_signal_error_1 (Qbeginning_of_buffer, Qnil, Qwindow, errb); |
428 | 4699 return; |
4700 } | |
4701 else | |
4702 { | |
4703 set_marker_restricted (w->start[CURRENT_DISP], make_int (startp), | |
4704 w->buffer); | |
4705 w->force_start = 1; | |
4706 w->start_at_line_beg = beginning_of_line_p (b, startp); | |
4707 MARK_WINDOWS_CHANGED (w); | |
438 | 4708 |
440 | 4709 /* #### Scroll back by less than a line. This code was |
4710 originally for scrolling over large pixmaps and it | |
4711 loses when a line being *exposed* at the top of the | |
4712 window is bigger than the current one. However, for | |
4713 pixel based scrolling in general we can guess that | |
4714 the line we are going to display is probably the same | |
4715 size as the one we are on. In that instance we can | |
4716 have a reasonable stab at a suitable top clip. Fixing | |
4717 this properly is hard (and probably slow) as we would | |
4718 have to call redisplay to figure out the exposed line | |
4719 size. */ | |
4720 if (!NILP (Vwindow_pixel_scroll_increment) | |
4721 && Dynarr_length (dla) >= (1 + modeline) | |
4722 && dl->ascent + fheight * value > 0) | |
4723 { | |
4724 WINDOW_TEXT_TOP_CLIP (w) = (dl->ascent + fheight * value); | |
4725 } | |
4726 | |
1708 | 4727 if (!point_would_be_visible (w, startp, XINT (point), 0)) |
428 | 4728 { |
665 | 4729 Charbpos new_point; |
438 | 4730 |
428 | 4731 if (MINI_WINDOW_P (w)) |
4732 new_point = startp; | |
4733 else | |
4734 new_point = start_of_last_line (w, startp); | |
438 | 4735 |
844 | 4736 Fset_window_point (wrap_window (w), make_int (new_point)); |
428 | 4737 } |
4738 } | |
4739 } | |
4740 } | |
4741 else /* value == 0 && direction == -1 */ | |
4742 { | |
4743 if (WINDOW_TEXT_TOP_CLIP (w)) | |
4744 { | |
4745 WINDOW_TEXT_TOP_CLIP (w) = 0; | |
4746 MARK_WINDOWS_CHANGED (w); | |
4747 } | |
4748 if (marker_position (w->start[CURRENT_DISP]) == BUF_BEGV (b)) | |
4749 { | |
563 | 4750 maybe_signal_error_1 (Qbeginning_of_buffer, Qnil, Qwindow, errb); |
428 | 4751 return; |
4752 } | |
4753 else | |
4754 { | |
4755 int vtarget; | |
4756 int movement = next_screen_context_lines - 1; | |
665 | 4757 Charbpos old_startp = marker_position (w->start[CURRENT_DISP]); |
4758 Charbpos bottom = vmotion (w, old_startp, movement, &vtarget); | |
4759 Charbpos startp = | |
428 | 4760 start_with_point_on_display_line (w, bottom, |
4761 -1 - (movement - vtarget)); | |
4762 | |
4763 if (startp >= old_startp) | |
4764 startp = vmotion (w, old_startp, -1, NULL); | |
4765 | |
4766 set_marker_restricted (w->start[CURRENT_DISP], make_int (startp), | |
4767 w->buffer); | |
4768 w->force_start = 1; | |
4769 w->start_at_line_beg = beginning_of_line_p (b, startp); | |
4770 MARK_WINDOWS_CHANGED (w); | |
4771 | |
1708 | 4772 if (!point_would_be_visible (w, startp, XINT (point), 0)) |
428 | 4773 { |
665 | 4774 Charbpos new_point = start_of_last_line (w, startp); |
428 | 4775 |
844 | 4776 Fset_window_point (wrap_window (w), make_int (new_point)); |
428 | 4777 } |
4778 } | |
4779 } | |
4780 } | |
4781 | |
4782 DEFUN ("scroll-up", Fscroll_up, 0, 1, "_P", /* | |
444 | 4783 Scroll text of current window up COUNT lines; or near full screen if no arg. |
428 | 4784 A near full screen is `next-screen-context-lines' less than a full screen. |
444 | 4785 Negative COUNT means scroll downward. |
428 | 4786 When calling from a program, supply an integer as argument or nil. |
4787 On attempt to scroll past end of buffer, `end-of-buffer' is signaled. | |
4788 On attempt to scroll past beginning of buffer, `beginning-of-buffer' is | |
4789 signaled. | |
462 | 4790 |
4791 The characters that are moved over may be added to the current selection | |
4792 \(i.e. active region) if the Shift key is held down, a motion key is used | |
4793 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
4794 the documentation for this variable for more details. | |
428 | 4795 */ |
444 | 4796 (count)) |
4797 { | |
4798 window_scroll (Fselected_window (Qnil), count, 1, ERROR_ME); | |
428 | 4799 return Qnil; |
4800 } | |
4801 | |
4802 DEFUN ("scroll-down", Fscroll_down, 0, 1, "_P", /* | |
444 | 4803 Scroll text of current window down COUNT lines; or near full screen if no arg. |
428 | 4804 A near full screen is `next-screen-context-lines' less than a full screen. |
444 | 4805 Negative COUNT means scroll upward. |
428 | 4806 When calling from a program, supply a number as argument or nil. |
4807 On attempt to scroll past end of buffer, `end-of-buffer' is signaled. | |
4808 On attempt to scroll past beginning of buffer, `beginning-of-buffer' is | |
4809 signaled. | |
462 | 4810 |
4811 The characters that are moved over may be added to the current selection | |
4812 \(i.e. active region) if the Shift key is held down, a motion key is used | |
4813 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
4814 the documentation for this variable for more details. | |
428 | 4815 */ |
444 | 4816 (count)) |
4817 { | |
4818 window_scroll (Fselected_window (Qnil), count, -1, ERROR_ME); | |
428 | 4819 return Qnil; |
4820 } | |
4821 | |
4822 DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, 0, 0, 0, /* | |
4823 Return the other window for "other window scroll" commands. | |
4824 If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4825 specifies the window. | |
4826 If `other-window-scroll-buffer' is non-nil, a window | |
4827 showing that buffer is used. | |
4828 */ | |
4829 ()) | |
4830 { | |
4831 Lisp_Object window; | |
4832 Lisp_Object selected_window = Fselected_window (Qnil); | |
4833 | |
4834 if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
4835 && !NILP (Vminibuffer_scroll_window)) | |
4836 window = Vminibuffer_scroll_window; | |
4837 /* If buffer is specified, scroll that buffer. */ | |
4838 else if (!NILP (Vother_window_scroll_buffer)) | |
4839 { | |
4840 window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil, Qnil); | |
4841 if (NILP (window)) | |
4842 window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); | |
4843 } | |
4844 else | |
4845 { | |
4846 /* Nothing specified; look for a neighboring window on the same | |
4847 frame. */ | |
4848 window = Fnext_window (selected_window, Qnil, Qnil, Qnil); | |
4849 | |
4850 if (EQ (window, selected_window)) | |
4851 /* That didn't get us anywhere; look for a window on another | |
4852 visible frame. */ | |
4853 do | |
4854 window = Fnext_window (window, Qnil, Qt, Qnil); | |
4855 while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
4856 && ! EQ (window, selected_window)); | |
4857 } | |
4858 | |
4859 CHECK_LIVE_WINDOW (window); | |
4860 | |
4861 if (EQ (window, selected_window)) | |
563 | 4862 invalid_operation ("There is no other window", Qunbound); |
428 | 4863 |
4864 return window; | |
4865 } | |
4866 | |
4867 DEFUN ("scroll-other-window", Fscroll_other_window, 0, 1, "_P", /* | |
444 | 4868 Scroll next window upward COUNT lines; or near full frame if no arg. |
428 | 4869 The next window is the one below the current one; or the one at the top |
444 | 4870 if the current one is at the bottom. Negative COUNT means scroll downward. |
428 | 4871 When calling from a program, supply a number as argument or nil. |
4872 | |
4873 If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4874 specifies the window to scroll. | |
4875 If `other-window-scroll-buffer' is non-nil, scroll the window | |
4876 showing that buffer, popping the buffer up if necessary. | |
4877 */ | |
444 | 4878 (count)) |
4879 { | |
4880 window_scroll (Fother_window_for_scrolling (), count, 1, ERROR_ME); | |
428 | 4881 return Qnil; |
4882 } | |
4883 | |
4884 DEFUN ("scroll-left", Fscroll_left, 0, 1, "_P", /* | |
444 | 4885 Scroll selected window display COUNT columns left. |
4886 Default for COUNT is window width minus 2. | |
462 | 4887 |
4888 The characters that are moved over may be added to the current selection | |
4889 \(i.e. active region) if the Shift key is held down, a motion key is used | |
4890 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
4891 the documentation for this variable for more details. | |
428 | 4892 */ |
444 | 4893 (count)) |
428 | 4894 { |
4895 Lisp_Object window = Fselected_window (Qnil); | |
4896 struct window *w = XWINDOW (window); | |
444 | 4897 int n = (NILP (count) ? |
4898 window_char_width (w, 0) - 2 : | |
4899 XINT (Fprefix_numeric_value (count))); | |
4900 | |
4901 return Fset_window_hscroll (window, make_int (w->hscroll + n)); | |
428 | 4902 } |
4903 | |
4904 DEFUN ("scroll-right", Fscroll_right, 0, 1, "_P", /* | |
444 | 4905 Scroll selected window display COUNT columns right. |
4906 Default for COUNT is window width minus 2. | |
462 | 4907 |
4908 The characters that are moved over may be added to the current selection | |
4909 \(i.e. active region) if the Shift key is held down, a motion key is used | |
4910 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
4911 the documentation for this variable for more details. | |
428 | 4912 */ |
444 | 4913 (count)) |
428 | 4914 { |
4915 Lisp_Object window = Fselected_window (Qnil); | |
4916 struct window *w = XWINDOW (window); | |
444 | 4917 int n = (NILP (count) ? |
4918 window_char_width (w, 0) - 2 : | |
4919 XINT (Fprefix_numeric_value (count))); | |
4920 | |
4921 return Fset_window_hscroll (window, make_int (w->hscroll - n)); | |
428 | 4922 } |
4923 | |
4924 DEFUN ("center-to-window-line", Fcenter_to_window_line, 0, 2, "_P", /* | |
4925 Center point in WINDOW. With N, put point on line N. | |
4926 The desired position of point is always relative to the window. | |
4927 If WINDOW is nil, the selected window is used. | |
4928 */ | |
4929 (n, window)) | |
4930 { | |
4931 struct window *w = decode_window (window); | |
4932 struct buffer *b = XBUFFER (w->buffer); | |
665 | 4933 Charbpos opoint = BUF_PT (b); |
4934 Charbpos startp; | |
428 | 4935 |
4936 if (NILP (n)) | |
4937 startp = start_with_line_at_pixpos (w, opoint, window_half_pixpos (w)); | |
4938 else | |
4939 { | |
4940 n = Fprefix_numeric_value (n); | |
4941 CHECK_INT (n); | |
4942 startp = start_with_point_on_display_line (w, opoint, XINT (n)); | |
4943 } | |
4944 | |
4945 Fset_marker (w->start[CURRENT_DISP], make_int (startp), w->buffer); | |
4946 | |
4947 w->start_at_line_beg = beginning_of_line_p (b, startp); | |
4948 w->force_start = 1; | |
4949 MARK_WINDOWS_CHANGED (w); | |
4950 return Qnil; | |
4951 } | |
4952 | |
4953 DEFUN ("move-to-window-line", Fmove_to_window_line, 1, 2, "_P", /* | |
4954 Position point relative to WINDOW. | |
4955 With no argument, position text at center of window. | |
4956 An argument specifies window line; zero means top of window, | |
4957 negative means relative to bottom of window. | |
4958 If WINDOW is nil, the selected window is used. | |
4959 */ | |
4960 (arg, window)) | |
4961 { | |
4962 struct window *w; | |
4963 struct buffer *b; | |
4964 int height; | |
665 | 4965 Charbpos start, new_point; |
428 | 4966 int selected; |
4967 | |
4968 /* Don't use decode_window() because we need the new value of | |
4969 WINDOW. */ | |
4970 if (NILP (window)) | |
4971 window = Fselected_window (Qnil); | |
4972 else | |
4973 CHECK_LIVE_WINDOW (window); | |
4974 w = XWINDOW (window); | |
4975 b = XBUFFER (w->buffer); | |
4976 | |
4977 height = window_displayed_height (w); | |
4978 selected = EQ (window, Fselected_window (w->frame)); | |
4979 | |
4980 if (NILP (arg)) | |
4981 { | |
4982 int retval; | |
4983 | |
4984 if (XINT (w->last_modified[CURRENT_DISP]) >= BUF_MODIFF (b) | |
4985 && XINT (w->last_facechange[CURRENT_DISP]) >= BUF_FACECHANGE (b)) | |
4986 { | |
4987 new_point = point_at_center (w, CURRENT_DISP, 0, 0); | |
4988 | |
844 | 4989 /* #### Here we are checking the selected window of the frame |
4990 instead of the selected window period. Elsewhere we check | |
4991 the selected window of the device. What a mess! */ | |
428 | 4992 if (selected) |
4993 BUF_SET_PT (b, new_point); | |
4994 else | |
4995 Fset_window_point (window, make_int (new_point)); | |
4996 | |
4997 retval = line_at_center (w, CURRENT_DISP, 0, 0); | |
4998 } | |
4999 else | |
5000 { | |
5001 start = marker_position (w->start[CURRENT_DISP]); | |
5002 if (start < BUF_BEGV (b)) | |
5003 start = BUF_BEGV (b); | |
5004 else if (start > BUF_ZV (b)) | |
5005 start = BUF_ZV (b); | |
5006 | |
5007 if (selected) | |
5008 new_point = BUF_PT (b); | |
5009 else | |
5010 new_point = marker_position (w->pointm[CURRENT_DISP]); | |
5011 | |
5012 new_point = point_at_center (w, CMOTION_DISP, start, BUF_PT (b)); | |
5013 | |
5014 if (selected) | |
5015 BUF_SET_PT (b, new_point); | |
5016 else | |
5017 Fset_window_point (window, make_int (new_point)); | |
5018 | |
5019 retval = line_at_center (w, CMOTION_DISP, start, BUF_PT (b)); | |
5020 } | |
5021 | |
5022 return make_int (retval); | |
5023 } | |
5024 else | |
5025 { | |
5026 /* #### Is this going to work right when at eob? */ | |
5027 arg = Fprefix_numeric_value (arg); | |
5028 if (XINT (arg) < 0) | |
793 | 5029 arg = make_int (XINT (arg) + height); |
428 | 5030 } |
5031 | |
5032 start = marker_position (w->start[CURRENT_DISP]); | |
5033 if (start < BUF_BEGV (b) || start > BUF_ZV (b)) | |
5034 { | |
5035 if (selected) | |
5036 new_point = BUF_PT (b); | |
5037 else | |
5038 new_point = marker_position (w->pointm[CURRENT_DISP]); | |
5039 | |
5040 new_point = vmotion (XWINDOW (window), new_point, -height / 2, 0); | |
5041 | |
5042 if (selected) | |
5043 BUF_SET_PT (b, new_point); | |
5044 else | |
5045 Fset_window_point (window, make_int (new_point)); | |
5046 | |
5047 Fset_marker (w->start[CURRENT_DISP], make_int (new_point), | |
5048 w->buffer); | |
5049 w->start_at_line_beg = beginning_of_line_p (b, new_point); | |
5050 w->force_start = 1; | |
5051 } | |
5052 else | |
5053 { | |
5054 if (selected) | |
5055 BUF_SET_PT (b, start); | |
5056 else | |
5057 Fset_window_point (window, make_int (start)); | |
5058 } | |
5059 | |
5060 if (selected) | |
5061 return Fvertical_motion (arg, window, Qnil); | |
5062 else | |
5063 { | |
5064 int vpos; | |
5065 new_point = vmotion (XWINDOW (window), | |
5066 marker_position (w->pointm[CURRENT_DISP]), | |
5067 XINT (arg), &vpos); | |
5068 Fset_window_point (window, make_int (new_point)); | |
5069 return make_int (vpos); | |
5070 } | |
5071 } | |
5072 | |
5073 | |
5074 static int | |
5075 map_windows_1 (Lisp_Object window, | |
5076 int (*mapfun) (struct window *w, void *closure), | |
5077 void *closure) | |
5078 { | |
5079 for (; !NILP (window); window = XWINDOW (window)->next) | |
5080 { | |
5081 int retval; | |
5082 struct window *w = XWINDOW (window); | |
5083 | |
5084 if (!NILP (w->vchild)) | |
5085 retval = map_windows_1 (w->vchild, mapfun, closure); | |
5086 else if (!NILP (w->hchild)) | |
5087 retval = map_windows_1 (w->hchild, mapfun, closure); | |
5088 else | |
5089 retval = (mapfun) (w, closure); | |
5090 | |
5091 if (retval) | |
5092 return retval; | |
5093 } | |
5094 | |
5095 return 0; | |
5096 } | |
5097 | |
5098 /* Map MAPFUN over the windows in F. CLOSURE is passed to each | |
5099 invocation of MAPFUN. If any invocation of MAPFUN returns | |
5100 non-zero, the mapping is halted. Otherwise, map_windows() maps | |
5101 over all windows in F. | |
5102 | |
800 | 5103 If F is null, map over all frames on all devices and consoles. |
5104 | |
428 | 5105 If MAPFUN creates or deletes windows, the behavior is undefined. */ |
5106 | |
5107 int | |
5108 map_windows (struct frame *f, int (*mapfun) (struct window *w, void *closure), | |
5109 void *closure) | |
5110 { | |
5111 if (f) | |
5112 return map_windows_1 (FRAME_ROOT_WINDOW (f), mapfun, closure); | |
5113 else | |
5114 { | |
5115 Lisp_Object frmcons, devcons, concons; | |
5116 | |
5117 FRAME_LOOP_NO_BREAK(frmcons, devcons, concons) | |
5118 { | |
5119 int v = map_windows_1 (FRAME_ROOT_WINDOW (XFRAME (XCAR (frmcons))), | |
5120 mapfun, closure); | |
5121 if (v) | |
5122 return v; | |
5123 } | |
5124 } | |
5125 | |
5126 return 0; | |
5127 } | |
5128 | |
5129 | |
5130 static void | |
2286 | 5131 modeline_shadow_thickness_changed (Lisp_Object UNUSED (specifier), |
5132 struct window *w, | |
5133 Lisp_Object UNUSED (oldval)) | |
428 | 5134 { |
5135 w->shadow_thickness_changed = 1; | |
5136 MARK_WINDOWS_CHANGED (w); | |
5137 } | |
5138 | |
5139 static void | |
2286 | 5140 vertical_divider_changed_in_window (Lisp_Object UNUSED (specifier), |
428 | 5141 struct window *w, |
2286 | 5142 Lisp_Object UNUSED (oldval)) |
428 | 5143 { |
5144 MARK_WINDOWS_CHANGED (w); | |
5145 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (XFRAME (WINDOW_FRAME (w))); | |
5146 } | |
5147 | |
5148 /* also used in scrollbar.c */ | |
5149 void | |
2286 | 5150 some_window_value_changed (Lisp_Object UNUSED (specifier), |
5151 struct window *w, | |
5152 Lisp_Object UNUSED (oldval)) | |
428 | 5153 { |
5154 MARK_WINDOWS_CHANGED (w); | |
5155 } | |
5156 | |
5157 #ifdef MEMORY_USAGE_STATS | |
5158 | |
5159 struct window_stats | |
5160 { | |
5161 int face; | |
5162 int glyph; | |
5163 #ifdef HAVE_SCROLLBARS | |
5164 int scrollbar; | |
5165 #endif | |
5166 int line_start; | |
5167 int other_redisplay; | |
5168 int other; | |
5169 }; | |
5170 | |
5171 static void | |
5172 compute_window_mirror_usage (struct window_mirror *mir, | |
5173 struct window_stats *stats, | |
5174 struct overhead_stats *ovstats) | |
5175 { | |
5176 if (!mir) | |
5177 return; | |
3024 | 5178 stats->other += LISPOBJ_STORAGE_SIZE (mir, sizeof (*mir), ovstats); |
428 | 5179 #ifdef HAVE_SCROLLBARS |
5180 { | |
5181 struct device *d = XDEVICE (FRAME_DEVICE (mir->frame)); | |
5182 | |
5183 stats->scrollbar += | |
5184 compute_scrollbar_instance_usage (d, mir->scrollbar_vertical_instance, | |
5185 ovstats); | |
5186 stats->scrollbar += | |
5187 compute_scrollbar_instance_usage (d, mir->scrollbar_horizontal_instance, | |
5188 ovstats); | |
5189 } | |
5190 #endif /* HAVE_SCROLLBARS */ | |
5191 stats->other_redisplay += | |
5192 compute_display_line_dynarr_usage (mir->current_display_lines, ovstats); | |
5193 stats->other_redisplay += | |
5194 compute_display_line_dynarr_usage (mir->desired_display_lines, ovstats); | |
5195 } | |
5196 | |
5197 static void | |
5198 compute_window_usage (struct window *w, struct window_stats *stats, | |
5199 struct overhead_stats *ovstats) | |
5200 { | |
5201 xzero (*stats); | |
3024 | 5202 stats->other += LISPOBJ_STORAGE_SIZE (w, sizeof (*w), ovstats); |
428 | 5203 stats->face += compute_face_cachel_usage (w->face_cachels, ovstats); |
5204 stats->glyph += compute_glyph_cachel_usage (w->glyph_cachels, ovstats); | |
5205 stats->line_start += | |
5206 compute_line_start_cache_dynarr_usage (w->line_start_cache, ovstats); | |
5207 compute_window_mirror_usage (find_window_mirror (w), stats, ovstats); | |
5208 } | |
5209 | |
5210 DEFUN ("window-memory-usage", Fwindow_memory_usage, 1, 1, 0, /* | |
5211 Return stats about the memory usage of window WINDOW. | |
5212 The values returned are in the form of an alist of usage types and byte | |
5213 counts. The byte counts attempt to encompass all the memory used | |
5214 by the window (separate from the memory logically associated with a | |
5215 buffer or frame), including internal structures and any malloc() | |
5216 overhead associated with them. In practice, the byte counts are | |
5217 underestimated because certain memory usage is very hard to determine | |
5218 \(e.g. the amount of memory used inside the Xt library or inside the | |
5219 X server) and because there is other stuff that might logically | |
5220 be associated with a window, buffer, or frame (e.g. window configurations, | |
5221 glyphs) but should not obviously be included in the usage counts. | |
5222 | |
5223 Multiple slices of the total memory usage may be returned, separated | |
5224 by a nil. Each slice represents a particular view of the memory, a | |
5225 particular way of partitioning it into groups. Within a slice, there | |
5226 is no overlap between the groups of memory, and each slice collectively | |
5227 represents all the memory concerned. | |
5228 */ | |
5229 (window)) | |
5230 { | |
5231 struct window_stats stats; | |
5232 struct overhead_stats ovstats; | |
5233 Lisp_Object val = Qnil; | |
5234 | |
5235 CHECK_WINDOW (window); /* dead windows should be allowed, no? */ | |
5236 xzero (ovstats); | |
5237 compute_window_usage (XWINDOW (window), &stats, &ovstats); | |
5238 | |
5239 val = acons (Qface_cache, make_int (stats.face), val); | |
5240 val = acons (Qglyph_cache, make_int (stats.glyph), val); | |
5241 #ifdef HAVE_SCROLLBARS | |
5242 val = acons (Qscrollbar_instances, make_int (stats.scrollbar), val); | |
5243 #endif | |
5244 val = acons (Qline_start_cache, make_int (stats.line_start), val); | |
5245 val = acons (Qother_redisplay, make_int (stats.other_redisplay), val); | |
5246 val = acons (Qother, make_int (stats.other), val); | |
5247 val = Fcons (Qnil, val); | |
5248 val = acons (Qactually_requested, make_int (ovstats.was_requested), val); | |
5249 val = acons (Qmalloc_overhead, make_int (ovstats.malloc_overhead), val); | |
5250 val = acons (Qdynarr_overhead, make_int (ovstats.dynarr_overhead), val); | |
5251 | |
5252 return Fnreverse (val); | |
5253 } | |
5254 | |
5255 #endif /* MEMORY_USAGE_STATS */ | |
5256 | |
5257 /* Mark all subwindows of a window as deleted. The argument | |
5258 W is actually the subwindow tree of the window in question. */ | |
5259 | |
5260 void | |
5261 delete_all_subwindows (struct window *w) | |
5262 { | |
5263 if (!NILP (w->next)) delete_all_subwindows (XWINDOW (w->next)); | |
5264 if (!NILP (w->vchild)) delete_all_subwindows (XWINDOW (w->vchild)); | |
5265 if (!NILP (w->hchild)) delete_all_subwindows (XWINDOW (w->hchild)); | |
5266 | |
5267 mark_window_as_deleted (w); | |
5268 } | |
5269 | |
5270 Lisp_Object | |
5271 save_window_excursion_unwind (Lisp_Object window_config) | |
5272 { | |
1149 | 5273 Lisp_Object val = call1 (Qset_window_configuration, window_config); |
428 | 5274 return val; |
5275 } | |
5276 | |
5277 DEFUN ("save-window-excursion", Fsave_window_excursion, 0, UNEVALLED, 0, /* | |
4693
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4446
diff
changeset
|
5278 Execute BODY, preserving window sizes and contents. |
428 | 5279 Restores which buffer appears in which window, where display starts, |
5280 as well as the current buffer. | |
5281 Does not restore the value of point in current buffer. | |
4693
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4446
diff
changeset
|
5282 |
80cd90837ac5
Add argument information to remaining MANY or UNEVALLED C subrs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4446
diff
changeset
|
5283 arguments: (&rest BODY) |
428 | 5284 */ |
5285 (args)) | |
5286 { | |
5287 /* This function can GC */ | |
5288 int speccount = specpdl_depth (); | |
5289 | |
5290 record_unwind_protect (save_window_excursion_unwind, | |
1149 | 5291 call1 (Qcurrent_window_configuration, Qnil)); |
771 | 5292 return unbind_to_1 (speccount, Fprogn (args)); |
428 | 5293 } |
1149 | 5294 |
2289 | 5295 static int |
5296 get_current_pixel_pos (Lisp_Object window, Lisp_Object pos, | |
5297 struct window **w, | |
5298 struct rune **rb, struct display_line **dl) | |
428 | 5299 { |
2289 | 5300 display_line_dynarr *dla; |
5301 struct display_block *db = NULL; | |
5302 int x, y; | |
5303 | |
5304 *rb = NULL; | |
5305 *dl = NULL; | |
5306 *w = decode_window (window); | |
5307 dla = window_display_lines (*w, CURRENT_DISP); | |
5308 x = (*w)->last_point_x[CURRENT_DISP]; | |
5309 y = (*w)->last_point_y[CURRENT_DISP]; | |
5310 if (MINI_WINDOW_P (*w)) | |
5311 return 0; | |
428 | 5312 |
5313 if (y<0 || x<0 || y >= Dynarr_length (dla) || !NILP (pos)) | |
5314 { | |
5315 int first_line, i; | |
665 | 5316 Charbpos point; |
428 | 5317 |
5318 if (NILP (pos)) | |
5319 pos = Fwindow_point (window); | |
438 | 5320 |
428 | 5321 CHECK_INT (pos); |
5322 point = XINT (pos); | |
5323 | |
5324 if (Dynarr_length (dla) && Dynarr_atp (dla, 0)->modeline) | |
5325 first_line = 1; | |
5326 else | |
5327 first_line = 0; | |
5328 | |
5329 for (i = first_line; i < Dynarr_length (dla); i++) | |
5330 { | |
2289 | 5331 *dl = Dynarr_atp (dla, i); |
428 | 5332 /* find the vertical location first */ |
2289 | 5333 if (point >= (*dl)->charpos && point <= (*dl)->end_charpos) |
428 | 5334 { |
2289 | 5335 db = get_display_block_from_line (*dl, TEXT); |
428 | 5336 for (i = 0; i < Dynarr_length (db->runes); i++) |
5337 { | |
2289 | 5338 *rb = Dynarr_atp (db->runes, i); |
2290 | 5339 if (point <= (*rb)->charpos) |
826 | 5340 goto found_charpos; |
428 | 5341 } |
2289 | 5342 return 0; |
428 | 5343 } |
5344 } | |
2289 | 5345 return 0; |
826 | 5346 found_charpos: |
428 | 5347 ; |
5348 } | |
5349 else | |
5350 { | |
442 | 5351 /* optimized case */ |
2289 | 5352 *dl = Dynarr_atp (dla, y); |
5353 db = get_display_block_from_line (*dl, TEXT); | |
428 | 5354 |
5355 if (x >= Dynarr_length (db->runes)) | |
2289 | 5356 return 0; |
5357 | |
5358 *rb = Dynarr_atp (db->runes, x); | |
428 | 5359 } |
5360 | |
2289 | 5361 return 1; |
5362 } | |
5363 | |
5364 DEFUN ("current-pixel-column", Fcurrent_pixel_column, 0, 2, 0, /* | |
5365 Return the horizontal pixel position of point POS in window. | |
5366 Beginning of line is column 0. If WINDOW is nil, the current window | |
5367 is assumed. If POS is nil, point is assumed. Note that POS must be | |
5368 visible for a non-nil result to be returned. This is calculated using | |
5369 the redisplay display tables; because of this, the returned value will | |
5370 only be correct if the redisplay tables are up-to-date. Use | |
5371 \"(sit-for 0)\" to insure that they are; however, if WINDOW is part of | |
5372 a new frame, use the following instead: | |
5373 (while (not (frame-visible-p frame)) (sleep-for .5)) | |
5374 */ | |
5375 (window, pos)) | |
5376 { | |
5377 struct window* w; | |
5378 struct display_line *dl; | |
5379 struct rune* rb; | |
5380 | |
5381 if (!get_current_pixel_pos(window, pos, &w, &rb, &dl)) | |
5382 return Qnil; | |
5383 | |
428 | 5384 return make_int (rb->xpos - WINDOW_LEFT (w)); |
5385 } | |
5386 | |
2289 | 5387 DEFUN ("current-pixel-row", Fcurrent_pixel_row, 0, 2, 0, /* |
5388 Return the vertical pixel position of point POS in window. Top of | |
5389 window is row 0. If WINDOW is nil, the current window is assumed. If | |
5390 POS is nil, point is assumed. Note that POS must be visible for a | |
5391 non-nil result to be returned. This is calculated using the redisplay | |
5392 display tables; because of this, the returned value will only be | |
5393 correct if the redisplay tables are up-to-date. Use \"(sit-for 0)\" | |
5394 to insure that they are; however, if WINDOW is part of a new frame, | |
5395 use the following instead: | |
5396 (while (not (frame-visible-p frame)) (sleep-for .5)) | |
5397 */ | |
5398 (window, pos)) | |
5399 { | |
5400 struct window* w; | |
5401 struct display_line *dl; | |
5402 struct rune* rb; | |
5403 | |
5404 if (!get_current_pixel_pos(window, pos, &w, &rb, &dl)) | |
5405 return Qnil; | |
5406 | |
5407 return make_int (dl->ypos - dl->ascent - WINDOW_TOP (w)); | |
5408 } | |
5409 | |
428 | 5410 |
5411 #ifdef DEBUG_XEMACS | |
5412 /* This is short and simple in elisp, but... it was written to debug | |
5413 problems purely on the C side. That is where we need to call it so | |
5414 here it is. */ | |
5415 static void | |
5416 debug_print_window (Lisp_Object window, int level) | |
5417 { | |
5418 int i; | |
5419 Lisp_Object child = Fwindow_first_vchild (window); | |
5420 | |
5421 if (NILP (child)) | |
5422 child = Fwindow_first_hchild (window); | |
5423 | |
5424 for (i = level; i > 0; i--) | |
442 | 5425 stderr_out ("\t"); |
5426 | |
5427 stderr_out ("#<window"); | |
428 | 5428 { |
5429 Lisp_Object buffer = XWINDOW (window)->buffer; | |
5430 if (!NILP (buffer) && BUFFERP (buffer)) | |
442 | 5431 stderr_out (" on %s", XSTRING_DATA (XBUFFER (buffer)->name)); |
428 | 5432 } |
442 | 5433 stderr_out (" 0x%x>", XWINDOW (window)->header.uid); |
428 | 5434 |
5435 while (!NILP (child)) | |
5436 { | |
5437 debug_print_window (child, level + 1); | |
5438 child = Fwindow_next_child (child); | |
5439 } | |
5440 } | |
5441 | |
5442 void debug_print_windows (struct frame *f); | |
5443 void | |
5444 debug_print_windows (struct frame *f) | |
5445 { | |
5446 debug_print_window (f->root_window, 0); | |
5447 putc ('\n', stderr); | |
5448 } | |
5449 #endif /* DEBUG_XEMACS */ | |
5450 | |
5451 | |
5452 /************************************************************************/ | |
5453 /* initialization */ | |
5454 /************************************************************************/ | |
5455 | |
5456 void | |
5457 syms_of_window (void) | |
5458 { | |
442 | 5459 INIT_LRECORD_IMPLEMENTATION (window); |
617 | 5460 INIT_LRECORD_IMPLEMENTATION (window_mirror); |
3092 | 5461 #ifdef NEW_GC |
5462 INIT_LRECORD_IMPLEMENTATION (face_cachel); | |
5463 INIT_LRECORD_IMPLEMENTATION (face_cachel_dynarr); | |
5464 INIT_LRECORD_IMPLEMENTATION (glyph_cachel); | |
5465 INIT_LRECORD_IMPLEMENTATION (glyph_cachel_dynarr); | |
5466 #endif /* NEW_GC */ | |
442 | 5467 |
563 | 5468 DEFSYMBOL (Qwindowp); |
5469 DEFSYMBOL (Qwindow_live_p); | |
5470 DEFSYMBOL (Qdisplay_buffer); | |
428 | 5471 |
5472 #ifdef MEMORY_USAGE_STATS | |
563 | 5473 DEFSYMBOL (Qface_cache); |
5474 DEFSYMBOL (Qglyph_cache); | |
5475 DEFSYMBOL (Qline_start_cache); | |
428 | 5476 #ifdef HAVE_SCROLLBARS |
563 | 5477 DEFSYMBOL (Qscrollbar_instances); |
428 | 5478 #endif |
563 | 5479 DEFSYMBOL (Qother_redisplay); |
428 | 5480 /* Qother in general.c */ |
5481 #endif | |
5482 | |
707 | 5483 DEFSYMBOL (Qtruncate_partial_width_windows); |
1149 | 5484 DEFSYMBOL (Qcurrent_window_configuration); |
5485 DEFSYMBOL (Qset_window_configuration); | |
707 | 5486 |
428 | 5487 DEFSUBR (Fselected_window); |
5488 DEFSUBR (Flast_nonminibuf_window); | |
5489 DEFSUBR (Fminibuffer_window); | |
5490 DEFSUBR (Fwindow_minibuffer_p); | |
5491 DEFSUBR (Fwindowp); | |
5492 DEFSUBR (Fwindow_live_p); | |
5493 DEFSUBR (Fwindow_first_hchild); | |
5494 DEFSUBR (Fwindow_first_vchild); | |
5495 DEFSUBR (Fwindow_next_child); | |
5496 DEFSUBR (Fwindow_previous_child); | |
5497 DEFSUBR (Fwindow_parent); | |
5498 DEFSUBR (Fwindow_lowest_p); | |
5499 DEFSUBR (Fwindow_truncated_p); | |
5500 DEFSUBR (Fwindow_highest_p); | |
5501 DEFSUBR (Fwindow_leftmost_p); | |
5502 DEFSUBR (Fwindow_rightmost_p); | |
5503 DEFSUBR (Fpos_visible_in_window_p); | |
5504 DEFSUBR (Fwindow_buffer); | |
5505 DEFSUBR (Fwindow_frame); | |
5506 DEFSUBR (Fwindow_height); | |
5507 DEFSUBR (Fwindow_displayed_height); | |
5508 DEFSUBR (Fwindow_width); | |
442 | 5509 DEFSUBR (Fwindow_full_width); |
428 | 5510 DEFSUBR (Fwindow_pixel_height); |
5511 DEFSUBR (Fwindow_pixel_width); | |
442 | 5512 DEFSUBR (Fwindow_text_area_height); |
428 | 5513 DEFSUBR (Fwindow_text_area_pixel_height); |
5514 DEFSUBR (Fwindow_displayed_text_pixel_height); | |
5515 DEFSUBR (Fwindow_text_area_pixel_width); | |
5516 DEFSUBR (Fwindow_hscroll); | |
438 | 5517 DEFSUBR (Fset_window_hscroll); |
428 | 5518 DEFSUBR (Fmodeline_hscroll); |
5519 DEFSUBR (Fset_modeline_hscroll); | |
5520 DEFSUBR (Fwindow_pixel_edges); | |
5521 DEFSUBR (Fwindow_text_area_pixel_edges); | |
5522 DEFSUBR (Fwindow_point); | |
5523 DEFSUBR (Fwindow_start); | |
5524 DEFSUBR (Fwindow_end); | |
442 | 5525 DEFSUBR (Fwindow_last_line_visible_height); |
428 | 5526 DEFSUBR (Fset_window_point); |
5527 DEFSUBR (Fset_window_start); | |
5528 DEFSUBR (Fwindow_dedicated_p); | |
5529 DEFSUBR (Fset_window_dedicated_p); | |
5530 DEFSUBR (Fnext_window); | |
5531 DEFSUBR (Fprevious_window); | |
5532 DEFSUBR (Fnext_vertical_window); | |
5533 DEFSUBR (Fother_window); | |
5534 DEFSUBR (Fget_lru_window); | |
5535 DEFSUBR (Fget_largest_window); | |
5536 DEFSUBR (Fget_buffer_window); | |
5537 DEFSUBR (Fwindow_left_margin_pixel_width); | |
5538 DEFSUBR (Fwindow_right_margin_pixel_width); | |
5539 DEFSUBR (Fdelete_other_windows); | |
5540 DEFSUBR (Fdelete_windows_on); | |
5541 DEFSUBR (Freplace_buffer_in_windows); | |
5542 DEFSUBR (Fdelete_window); | |
5543 DEFSUBR (Fset_window_buffer); | |
5544 DEFSUBR (Fselect_window); | |
5545 DEFSUBR (Fsplit_window); | |
5546 DEFSUBR (Fenlarge_window); | |
5547 DEFSUBR (Fenlarge_window_pixels); | |
5548 DEFSUBR (Fshrink_window); | |
5549 DEFSUBR (Fshrink_window_pixels); | |
5550 DEFSUBR (Fscroll_up); | |
5551 DEFSUBR (Fscroll_down); | |
5552 DEFSUBR (Fscroll_left); | |
5553 DEFSUBR (Fscroll_right); | |
5554 DEFSUBR (Fother_window_for_scrolling); | |
5555 DEFSUBR (Fscroll_other_window); | |
5556 DEFSUBR (Fcenter_to_window_line); | |
5557 DEFSUBR (Fmove_to_window_line); | |
5558 #ifdef MEMORY_USAGE_STATS | |
5559 DEFSUBR (Fwindow_memory_usage); | |
5560 #endif | |
5561 DEFSUBR (Fsave_window_excursion); | |
5562 DEFSUBR (Fcurrent_pixel_column); | |
2289 | 5563 DEFSUBR (Fcurrent_pixel_row); |
428 | 5564 } |
5565 | |
5566 void | |
5567 reinit_vars_of_window (void) | |
5568 { | |
5569 /* Make sure all windows get marked */ | |
5570 minibuf_window = Qnil; | |
5571 staticpro_nodump (&minibuf_window); | |
5572 } | |
5573 | |
5574 void | |
5575 vars_of_window (void) | |
5576 { | |
5577 DEFVAR_BOOL ("scroll-on-clipped-lines", &scroll_on_clipped_lines /* | |
5578 *Non-nil means to scroll if point lands on a line which is clipped. | |
5579 */ ); | |
5580 scroll_on_clipped_lines = 1; | |
5581 | |
5582 DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function /* | |
5583 Non-nil means call as function to display a help buffer. | |
5584 The function is called with one argument, the buffer to be displayed. | |
5585 Used by `with-output-to-temp-buffer'. | |
5586 If this function is used, then it must do the entire job of showing | |
5587 the buffer; `temp-buffer-show-hook' is not run unless this function runs it. | |
442 | 5588 \(`temp-buffer-show-hook' is obsolete. Do not use in new code.) |
428 | 5589 */ ); |
5590 Vtemp_buffer_show_function = Qnil; | |
5591 | |
5592 DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuffer_scroll_window /* | |
5593 Non-nil means it is the window that \\<minibuffer-local-map>\\[scroll-other-window] in minibuffer should scroll. | |
5594 */ ); | |
5595 Vminibuffer_scroll_window = Qnil; | |
5596 | |
5597 DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer /* | |
5598 If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. | |
5599 */ ); | |
5600 Vother_window_scroll_buffer = Qnil; | |
5601 | |
5602 DEFVAR_LISP ("window-pixel-scroll-increment", &Vwindow_pixel_scroll_increment /* | |
5603 *Number of pixels to scroll by per requested line. | |
5604 If nil then normal line scrolling occurs regardless of line height. | |
5605 If t then scrolling is done in increments equal to the height of the default face. | |
5606 */ ); | |
5607 Vwindow_pixel_scroll_increment = Qt; | |
5608 | |
5609 DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines /* | |
5610 *Number of lines of continuity when scrolling by screenfuls. | |
5611 */ ); | |
5612 next_screen_context_lines = 2; | |
5613 | |
5614 DEFVAR_INT ("window-min-height", &window_min_height /* | |
5615 *Delete any window less than this tall (including its modeline). | |
5616 */ ); | |
5617 window_min_height = 4; | |
5618 | |
5619 DEFVAR_INT ("window-min-width", &window_min_width /* | |
5620 *Delete any window less than this wide. | |
5621 */ ); | |
5622 window_min_width = 10; | |
5623 } | |
5624 | |
5625 void | |
5626 specifier_vars_of_window (void) | |
5627 { | |
5628 DEFVAR_SPECIFIER ("modeline-shadow-thickness", &Vmodeline_shadow_thickness /* | |
5629 *How thick to draw 3D shadows around modelines. | |
5630 If this is set to 0, modelines will be the traditional 2D. Sizes above | |
5631 10 will be accepted but the maximum thickness that will be drawn is 10. | |
5632 This is a specifier; use `set-specifier' to change it. | |
5633 */ ); | |
5634 Vmodeline_shadow_thickness = Fmake_specifier (Qinteger); | |
5635 /* The initial value for modeline-shadow-thickness is 2, but if the | |
5636 user removes all specifications we provide a fallback value of 0, | |
5637 which is probably what was expected. */ | |
5638 set_specifier_fallback (Vmodeline_shadow_thickness, | |
5639 list1 (Fcons (Qnil, Qzero))); | |
5640 Fadd_spec_to_specifier (Vmodeline_shadow_thickness, make_int (2), | |
5641 Qnil, Qnil, Qnil); | |
5642 set_specifier_caching (Vmodeline_shadow_thickness, | |
438 | 5643 offsetof (struct window, modeline_shadow_thickness), |
428 | 5644 modeline_shadow_thickness_changed, |
444 | 5645 0, 0, 0); |
428 | 5646 |
5647 DEFVAR_SPECIFIER ("has-modeline-p", &Vhas_modeline_p /* | |
5648 *Whether the modeline should be displayed. | |
5649 This is a specifier; use `set-specifier' to change it. | |
5650 */ ); | |
5651 Vhas_modeline_p = Fmake_specifier (Qboolean); | |
5652 set_specifier_fallback (Vhas_modeline_p, | |
5653 list1 (Fcons (Qnil, Qt))); | |
5654 set_specifier_caching (Vhas_modeline_p, | |
438 | 5655 offsetof (struct window, has_modeline_p), |
428 | 5656 /* #### It's strange that we need a special |
5657 flag to indicate that the shadow-thickness | |
5658 has changed, but not one to indicate that | |
5659 the modeline has been turned off or on. */ | |
5660 some_window_value_changed, | |
444 | 5661 0, 0, 0); |
428 | 5662 |
5663 DEFVAR_SPECIFIER ("vertical-divider-always-visible-p", | |
5664 &Vvertical_divider_always_visible_p /* | |
5665 *Should XEmacs always display vertical dividers between windows. | |
5666 | |
5667 When this is non-nil, vertical dividers are always shown, and are | |
5668 draggable. When it is nil, vertical dividers are shown only when | |
5669 there are no scrollbars in between windows, and are not draggable. | |
5670 | |
5671 This is a specifier; use `set-specifier' to change it. | |
5672 */ ); | |
5673 Vvertical_divider_always_visible_p = Fmake_specifier (Qboolean); | |
5674 set_specifier_fallback (Vvertical_divider_always_visible_p, | |
5675 list1 (Fcons (Qnil, Qt))); | |
5676 set_specifier_caching (Vvertical_divider_always_visible_p, | |
438 | 5677 offsetof (struct window, |
5678 vertical_divider_always_visible_p), | |
428 | 5679 vertical_divider_changed_in_window, |
444 | 5680 0, 0, 0); |
428 | 5681 |
5682 DEFVAR_SPECIFIER ("vertical-divider-shadow-thickness", &Vvertical_divider_shadow_thickness /* | |
5683 *How thick to draw 3D shadows around vertical dividers. | |
5684 This is a specifier; use `set-specifier' to change it. | |
5685 */ ); | |
5686 Vvertical_divider_shadow_thickness = Fmake_specifier (Qinteger); | |
5687 set_specifier_fallback (Vvertical_divider_shadow_thickness, | |
5688 list1 (Fcons (Qnil, Qzero))); | |
5689 Fadd_spec_to_specifier (Vvertical_divider_shadow_thickness, make_int (2), | |
5690 Qnil, Qnil, Qnil); | |
5691 set_specifier_caching (Vvertical_divider_shadow_thickness, | |
438 | 5692 offsetof (struct window, |
5693 vertical_divider_shadow_thickness), | |
428 | 5694 vertical_divider_changed_in_window, |
444 | 5695 0, 0, 0); |
428 | 5696 DEFVAR_SPECIFIER ("vertical-divider-line-width", &Vvertical_divider_line_width /* |
5697 *The width of the vertical dividers, not including shadows. | |
5698 | |
5699 For TTY windows, divider line is always one character wide. When | |
5700 instance of this specifier is zero in a TTY window, no divider is | |
5701 drawn at all between windows. When non-zero, a one character wide | |
5702 divider is displayed. | |
5703 | |
5704 This is a specifier; use `set-specifier' to change it. | |
5705 */ ); | |
5706 | |
5707 Vvertical_divider_line_width = Fmake_specifier (Qnatnum); | |
5708 { | |
5709 Lisp_Object fb = Qnil; | |
5710 #ifdef HAVE_TTY | |
5711 fb = Fcons (Fcons (list1 (Qtty), make_int (1)), fb); | |
5712 #endif | |
462 | 5713 #ifdef HAVE_GTK |
5714 fb = Fcons (Fcons (list1 (Qgtk), make_int (3)), fb); | |
5715 #endif | |
428 | 5716 #ifdef HAVE_X_WINDOWS |
5717 fb = Fcons (Fcons (list1 (Qx), make_int (3)), fb); | |
5718 #endif | |
5719 #ifdef HAVE_MS_WINDOWS | |
5720 /* #### This should be made magic and made to obey system settings */ | |
5721 fb = Fcons (Fcons (list1 (Qmswindows), make_int (3)), fb); | |
5722 #endif | |
5723 set_specifier_fallback (Vvertical_divider_line_width, fb); | |
5724 } | |
5725 set_specifier_caching (Vvertical_divider_line_width, | |
438 | 5726 offsetof (struct window, |
5727 vertical_divider_line_width), | |
428 | 5728 vertical_divider_changed_in_window, |
444 | 5729 0, 0, 0); |
428 | 5730 |
5731 DEFVAR_SPECIFIER ("vertical-divider-spacing", &Vvertical_divider_spacing /* | |
5732 *How much space to leave around the vertical dividers. | |
5733 | |
5734 In TTY windows, spacing is always zero, and the value of this | |
5735 specifier is ignored. | |
5736 | |
5737 This is a specifier; use `set-specifier' to change it. | |
5738 */ ); | |
5739 Vvertical_divider_spacing = Fmake_specifier (Qnatnum); | |
5740 { | |
5741 Lisp_Object fb = Qnil; | |
5742 #ifdef HAVE_TTY | |
5743 fb = Fcons (Fcons (list1 (Qtty), Qzero), fb); | |
5744 #endif | |
5745 #ifdef HAVE_X_WINDOWS | |
5746 /* #### 3D dividers look great on MS Windows with spacing = 0. | |
5747 Should not the same value be the fallback under X? - kkm */ | |
5748 fb = Fcons (Fcons (list1 (Qx), make_int (2)), fb); | |
5749 #endif | |
462 | 5750 #ifdef HAVE_GTK |
5751 fb = Fcons (Fcons (list1 (Qgtk), Qzero), fb); | |
5752 #endif | |
428 | 5753 #ifdef HAVE_MS_WINDOWS |
5754 fb = Fcons (Fcons (list1 (Qmswindows), Qzero), fb); | |
5755 #endif | |
5756 set_specifier_fallback (Vvertical_divider_spacing, fb); | |
5757 } | |
5758 set_specifier_caching (Vvertical_divider_spacing, | |
438 | 5759 offsetof (struct window, vertical_divider_spacing), |
428 | 5760 vertical_divider_changed_in_window, |
444 | 5761 0, 0, 0); |
5762 } |