Commit | Line | Data |
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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
acaf905b | 3 | Copyright (C) 1985-1987, 1993-1998, 2000-2012 |
8cabe764 | 4 | Free Software Foundation, Inc. |
7ab12479 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
7ab12479 | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
7ab12479 JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
7ab12479 | 20 | |
18160b98 | 21 | #include <config.h> |
e8c17b81 PE |
22 | |
23 | #define WINDOW_INLINE EXTERN_INLINE | |
24 | ||
4d553a13 | 25 | #include <stdio.h> |
d7306fe6 | 26 | #include <setjmp.h> |
4d553a13 | 27 | |
7ab12479 | 28 | #include "lisp.h" |
e5560ff7 | 29 | #include "character.h" |
7ab12479 | 30 | #include "buffer.h" |
3e4731a3 | 31 | #include "keyboard.h" |
e35f6ff7 | 32 | #include "keymap.h" |
44fa5b1e | 33 | #include "frame.h" |
7ab12479 JB |
34 | #include "window.h" |
35 | #include "commands.h" | |
36 | #include "indent.h" | |
37 | #include "termchar.h" | |
38 | #include "disptab.h" | |
dfcf069d | 39 | #include "dispextern.h" |
5500c422 GM |
40 | #include "blockinput.h" |
41 | #include "intervals.h" | |
de509a60 | 42 | #include "termhooks.h" /* For FRAME_TERMINAL. */ |
5500c422 | 43 | |
6d55d620 | 44 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 45 | #include "xterm.h" |
5500c422 | 46 | #endif /* HAVE_X_WINDOWS */ |
8f23f280 AI |
47 | #ifdef WINDOWSNT |
48 | #include "w32term.h" | |
49 | #endif | |
1e3c8885 EZ |
50 | #ifdef MSDOS |
51 | #include "msdos.h" | |
52 | #endif | |
edfda783 AR |
53 | #ifdef HAVE_NS |
54 | #include "nsterm.h" | |
55 | #endif | |
5500c422 | 56 | |
b52d6985 PE |
57 | Lisp_Object Qwindowp, Qwindow_live_p; |
58 | static Lisp_Object Qwindow_valid_p; | |
b9e809c2 | 59 | static Lisp_Object Qwindow_configuration_p, Qrecord_window_buffer; |
9397e56f | 60 | static Lisp_Object Qwindow_deletable_p, Qdelete_window, Qdisplay_buffer; |
b9e809c2 | 61 | static Lisp_Object Qreplace_buffer_in_windows, Qget_mru_window; |
5386012d | 62 | static Lisp_Object Qwindow_resize_root_window, Qwindow_resize_root_window_vertically; |
955cbe7b | 63 | static Lisp_Object Qscroll_up, Qscroll_down, Qscroll_command; |
b9e809c2 | 64 | static Lisp_Object Qsafe, Qabove, Qbelow; |
457294dd | 65 | static Lisp_Object Qclone_of; |
b9e809c2 | 66 | |
f57e2426 | 67 | static int displayed_window_lines (struct window *); |
f57e2426 J |
68 | static int count_windows (struct window *); |
69 | static int get_leaf_windows (struct window *, struct window **, int); | |
d311d28c | 70 | static void window_scroll (Lisp_Object, EMACS_INT, int, int); |
f57e2426 J |
71 | static void window_scroll_pixel_based (Lisp_Object, int, int, int); |
72 | static void window_scroll_line_based (Lisp_Object, int, int, int); | |
f57e2426 | 73 | static int freeze_window_start (struct window *, void *); |
f57e2426 J |
74 | static Lisp_Object window_list (void); |
75 | static int add_window_to_list (struct window *, void *); | |
76 | static int candidate_window_p (Lisp_Object, Lisp_Object, Lisp_Object, | |
77 | Lisp_Object); | |
78 | static Lisp_Object next_window (Lisp_Object, Lisp_Object, | |
79 | Lisp_Object, int); | |
80 | static void decode_next_window_args (Lisp_Object *, Lisp_Object *, | |
81 | Lisp_Object *); | |
2f7c71a1 | 82 | static void foreach_window (struct frame *, |
f95464e4 | 83 | int (* fn) (struct window *, void *), |
2f7c71a1 | 84 | void *); |
f57e2426 J |
85 | static int foreach_window_1 (struct window *, |
86 | int (* fn) (struct window *, void *), | |
87 | void *); | |
88 | static Lisp_Object window_list_1 (Lisp_Object, Lisp_Object, Lisp_Object); | |
d615d6d2 MR |
89 | static int window_resize_check (struct window *, int); |
90 | static void window_resize_apply (struct window *, int); | |
7c82f3e2 | 91 | static Lisp_Object select_window (Lisp_Object, Lisp_Object, int); |
b7354ddf | 92 | |
7ab12479 JB |
93 | /* This is the window in which the terminal's cursor should |
94 | be left when nothing is being done with it. This must | |
95 | always be a leaf window, and its buffer is selected by | |
96 | the top level editing loop at the end of each command. | |
97 | ||
98 | This value is always the same as | |
44fa5b1e | 99 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
100 | Lisp_Object selected_window; |
101 | ||
67492200 GM |
102 | /* A list of all windows for use by next_window and Fwindow_list. |
103 | Functions creating or deleting windows should invalidate this cache | |
104 | by setting it to nil. */ | |
67492200 GM |
105 | Lisp_Object Vwindow_list; |
106 | ||
5500c422 GM |
107 | /* The mini-buffer window of the selected frame. |
108 | Note that you cannot test for mini-bufferness of an arbitrary window | |
109 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 JB |
110 | the selected window. */ |
111 | Lisp_Object minibuf_window; | |
112 | ||
3f49fddc KS |
113 | /* Non-nil means it is the window whose mode line should be |
114 | shown as the selected window when the minibuffer is selected. */ | |
3dbab091 | 115 | Lisp_Object minibuf_selected_window; |
3f49fddc | 116 | |
a58ec57d | 117 | /* Hook run at end of temp_output_buffer_show. */ |
955cbe7b | 118 | static Lisp_Object Qtemp_buffer_show_hook; |
a58ec57d | 119 | |
7ab12479 JB |
120 | /* Incremented for each window created. */ |
121 | static int sequence_number; | |
122 | ||
5b03d3c0 RS |
123 | /* Nonzero after init_window_once has finished. */ |
124 | static int window_initialized; | |
125 | ||
543f5fb1 | 126 | /* Hook to run when window config changes. */ |
eeca6f6f | 127 | static Lisp_Object Qwindow_configuration_change_hook; |
0d384044 | 128 | |
66d43aea | 129 | /* Used by the function window_scroll_pixel_based */ |
c876b227 | 130 | static int window_scroll_pixel_based_preserve_x; |
66fe93d1 | 131 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 132 | |
c876b227 | 133 | /* Same for window_scroll_line_based. */ |
d311d28c PE |
134 | static EMACS_INT window_scroll_preserve_hpos; |
135 | static EMACS_INT window_scroll_preserve_vpos; | |
f230ecc9 | 136 | \f |
e8c17b81 PE |
137 | /* These setters are used only in this file, so they can be private. */ |
138 | static inline void | |
139 | wset_combination_limit (struct window *w, Lisp_Object val) | |
140 | { | |
141 | w->combination_limit = val; | |
142 | } | |
143 | static inline void | |
144 | wset_dedicated (struct window *w, Lisp_Object val) | |
145 | { | |
146 | w->dedicated = val; | |
147 | } | |
148 | static inline void | |
149 | wset_display_table (struct window *w, Lisp_Object val) | |
150 | { | |
151 | w->display_table = val; | |
152 | } | |
153 | static inline void | |
154 | wset_hchild (struct window *w, Lisp_Object val) | |
155 | { | |
156 | w->hchild = val; | |
157 | } | |
158 | static inline void | |
159 | wset_left_fringe_width (struct window *w, Lisp_Object val) | |
160 | { | |
161 | w->left_fringe_width = val; | |
162 | } | |
163 | static inline void | |
164 | wset_left_margin_cols (struct window *w, Lisp_Object val) | |
165 | { | |
166 | w->left_margin_cols = val; | |
167 | } | |
168 | static inline void | |
169 | wset_new_normal (struct window *w, Lisp_Object val) | |
170 | { | |
171 | w->new_normal = val; | |
172 | } | |
173 | static inline void | |
174 | wset_new_total (struct window *w, Lisp_Object val) | |
175 | { | |
176 | w->new_total = val; | |
177 | } | |
178 | static inline void | |
179 | wset_next_buffers (struct window *w, Lisp_Object val) | |
180 | { | |
181 | w->next_buffers = val; | |
182 | } | |
183 | static inline void | |
184 | wset_normal_cols (struct window *w, Lisp_Object val) | |
185 | { | |
186 | w->normal_cols = val; | |
187 | } | |
188 | static inline void | |
189 | wset_normal_lines (struct window *w, Lisp_Object val) | |
190 | { | |
191 | w->normal_lines = val; | |
192 | } | |
193 | static inline void | |
194 | wset_parent (struct window *w, Lisp_Object val) | |
195 | { | |
196 | w->parent = val; | |
197 | } | |
198 | static inline void | |
199 | wset_pointm (struct window *w, Lisp_Object val) | |
200 | { | |
201 | w->pointm = val; | |
202 | } | |
203 | static inline void | |
204 | wset_prev_buffers (struct window *w, Lisp_Object val) | |
205 | { | |
206 | w->prev_buffers = val; | |
207 | } | |
208 | static inline void | |
209 | wset_right_fringe_width (struct window *w, Lisp_Object val) | |
210 | { | |
211 | w->right_fringe_width = val; | |
212 | } | |
213 | static inline void | |
214 | wset_right_margin_cols (struct window *w, Lisp_Object val) | |
215 | { | |
216 | w->right_margin_cols = val; | |
217 | } | |
218 | static inline void | |
219 | wset_scroll_bar_width (struct window *w, Lisp_Object val) | |
220 | { | |
221 | w->scroll_bar_width = val; | |
222 | } | |
223 | static inline void | |
224 | wset_start (struct window *w, Lisp_Object val) | |
225 | { | |
226 | w->start = val; | |
227 | } | |
228 | static inline void | |
229 | wset_temslot (struct window *w, Lisp_Object val) | |
230 | { | |
231 | w->temslot = val; | |
232 | } | |
233 | static inline void | |
234 | wset_vchild (struct window *w, Lisp_Object val) | |
235 | { | |
236 | w->vchild = val; | |
237 | } | |
238 | static inline void | |
239 | wset_vertical_scroll_bar_type (struct window *w, Lisp_Object val) | |
240 | { | |
241 | w->vertical_scroll_bar_type = val; | |
242 | } | |
243 | static inline void | |
244 | wset_window_parameters (struct window *w, Lisp_Object val) | |
245 | { | |
246 | w->window_parameters = val; | |
247 | } | |
248 | ||
52162052 MR |
249 | struct window * |
250 | decode_live_window (register Lisp_Object window) | |
f230ecc9 MR |
251 | { |
252 | if (NILP (window)) | |
253 | return XWINDOW (selected_window); | |
c876b227 | 254 | |
f230ecc9 MR |
255 | CHECK_LIVE_WINDOW (window); |
256 | return XWINDOW (window); | |
257 | } | |
258 | ||
259 | static struct window * | |
260 | decode_any_window (register Lisp_Object window) | |
261 | { | |
6e5d1c12 CY |
262 | struct window *w; |
263 | ||
f230ecc9 MR |
264 | if (NILP (window)) |
265 | return XWINDOW (selected_window); | |
266 | ||
267 | CHECK_WINDOW (window); | |
6e5d1c12 | 268 | w = XWINDOW (window); |
6e5d1c12 | 269 | return w; |
f230ecc9 | 270 | } |
666e158e | 271 | |
b52d6985 | 272 | static struct window * |
52162052 MR |
273 | decode_valid_window (register Lisp_Object window) |
274 | { | |
275 | struct window *w; | |
276 | ||
277 | if (NILP (window)) | |
278 | return XWINDOW (selected_window); | |
279 | ||
280 | CHECK_VALID_WINDOW (window); | |
281 | w = XWINDOW (window); | |
282 | return w; | |
283 | } | |
284 | ||
7ab12479 | 285 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, |
f230ecc9 | 286 | doc: /* Return t if OBJECT is a window and nil otherwise. */) |
5842a27b | 287 | (Lisp_Object object) |
7ab12479 | 288 | { |
413430c5 | 289 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
290 | } |
291 | ||
52162052 MR |
292 | DEFUN ("window-valid-p", Fwindow_valid_p, Swindow_valid_p, 1, 1, 0, |
293 | doc: /* Return t if OBJECT is a valid window and nil otherwise. | |
294 | A valid window is either a window that displays a buffer or an internal | |
295 | window. Deleted windows are not live. */) | |
296 | (Lisp_Object object) | |
297 | { | |
298 | return WINDOW_VALID_P (object) ? Qt : Qnil; | |
299 | } | |
300 | ||
806b4d9b | 301 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
f230ecc9 | 302 | doc: /* Return t if OBJECT is a live window and nil otherwise. |
49745b39 CY |
303 | A live window is a window that displays a buffer. |
304 | Internal windows and deleted windows are not live. */) | |
5842a27b | 305 | (Lisp_Object object) |
605be8af | 306 | { |
9e571f49 | 307 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af | 308 | } |
727e958e MR |
309 | \f |
310 | /* Frames and windows. */ | |
311 | DEFUN ("window-frame", Fwindow_frame, Swindow_frame, 1, 1, 0, | |
312 | doc: /* Return the frame that window WINDOW is on. | |
52162052 | 313 | WINDOW must be a valid window and defaults to the selected one. */) |
727e958e MR |
314 | (Lisp_Object window) |
315 | { | |
52162052 | 316 | return decode_valid_window (window)->frame; |
727e958e MR |
317 | } |
318 | ||
319 | DEFUN ("frame-root-window", Fframe_root_window, Sframe_root_window, 0, 1, 0, | |
87e68db4 JB |
320 | doc: /* Return the root window of FRAME-OR-WINDOW. |
321 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
49745b39 CY |
322 | With a frame argument, return that frame's root window. |
323 | With a window argument, return the root window of that window's frame. */) | |
727e958e MR |
324 | (Lisp_Object frame_or_window) |
325 | { | |
326 | Lisp_Object window; | |
327 | ||
328 | if (NILP (frame_or_window)) | |
e69b0960 | 329 | window = SELECTED_FRAME ()->root_window; |
52162052 MR |
330 | else if (WINDOW_VALID_P (frame_or_window)) |
331 | window = XFRAME (XWINDOW (frame_or_window)->frame)->root_window; | |
727e958e MR |
332 | else |
333 | { | |
334 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 335 | window = XFRAME (frame_or_window)->root_window; |
727e958e MR |
336 | } |
337 | ||
338 | return window; | |
339 | } | |
340 | ||
341 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, | |
49745b39 CY |
342 | doc: /* Return the minibuffer window for frame FRAME. |
343 | If FRAME is omitted or nil, it defaults to the selected frame. */) | |
727e958e MR |
344 | (Lisp_Object frame) |
345 | { | |
346 | if (NILP (frame)) | |
347 | frame = selected_frame; | |
348 | CHECK_LIVE_FRAME (frame); | |
349 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); | |
350 | } | |
351 | ||
352 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, | |
353 | Swindow_minibuffer_p, 0, 1, 0, | |
354 | doc: /* Return non-nil if WINDOW is a minibuffer window. | |
52162052 | 355 | WINDOW must be a valid window and defaults to the selected one. */) |
727e958e MR |
356 | (Lisp_Object window) |
357 | { | |
52162052 | 358 | return MINI_WINDOW_P (decode_valid_window (window)) ? Qt : Qnil; |
727e958e MR |
359 | } |
360 | ||
361 | /* Don't move this to window.el - this must be a safe routine. */ | |
362 | DEFUN ("frame-first-window", Fframe_first_window, Sframe_first_window, 0, 1, 0, | |
87e68db4 JB |
363 | doc: /* Return the topmost, leftmost live window on FRAME-OR-WINDOW. |
364 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
52162052 MR |
365 | Else if FRAME-OR-WINDOW denotes a valid window, return the first window |
366 | of that window's frame. If FRAME-OR-WINDOW denotes a live frame, return | |
727e958e MR |
367 | the first window of that frame. */) |
368 | (Lisp_Object frame_or_window) | |
369 | { | |
370 | Lisp_Object window; | |
371 | ||
372 | if (NILP (frame_or_window)) | |
e69b0960 | 373 | window = SELECTED_FRAME ()->root_window; |
52162052 | 374 | else if (WINDOW_VALID_P (frame_or_window)) |
e69b0960 | 375 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window; |
727e958e MR |
376 | else |
377 | { | |
378 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 379 | window = XFRAME (frame_or_window)->root_window; |
727e958e MR |
380 | } |
381 | ||
d3d50620 | 382 | while (NILP (XWINDOW (window)->buffer)) |
727e958e | 383 | { |
d3d50620 DA |
384 | if (! NILP (XWINDOW (window)->hchild)) |
385 | window = XWINDOW (window)->hchild; | |
386 | else if (! NILP (XWINDOW (window)->vchild)) | |
387 | window = XWINDOW (window)->vchild; | |
727e958e | 388 | else |
1088b922 | 389 | emacs_abort (); |
727e958e MR |
390 | } |
391 | ||
392 | return window; | |
393 | } | |
394 | ||
395 | DEFUN ("frame-selected-window", Fframe_selected_window, | |
396 | Sframe_selected_window, 0, 1, 0, | |
87e68db4 JB |
397 | doc: /* Return the selected window of FRAME-OR-WINDOW. |
398 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
52162052 MR |
399 | Else if FRAME-OR-WINDOW denotes a valid window, return the selected |
400 | window of that window's frame. If FRAME-OR-WINDOW denotes a live frame, | |
401 | return the selected window of that frame. */) | |
727e958e MR |
402 | (Lisp_Object frame_or_window) |
403 | { | |
404 | Lisp_Object window; | |
405 | ||
406 | if (NILP (frame_or_window)) | |
e69b0960 | 407 | window = SELECTED_FRAME ()->selected_window; |
52162052 | 408 | else if (WINDOW_VALID_P (frame_or_window)) |
e69b0960 | 409 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->selected_window; |
727e958e MR |
410 | else |
411 | { | |
412 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 413 | window = XFRAME (frame_or_window)->selected_window; |
727e958e MR |
414 | } |
415 | ||
416 | return window; | |
417 | } | |
418 | ||
419 | DEFUN ("set-frame-selected-window", Fset_frame_selected_window, | |
420 | Sset_frame_selected_window, 2, 3, 0, | |
421 | doc: /* Set selected window of FRAME to WINDOW. | |
422 | FRAME must be a live frame and defaults to the selected one. If FRAME | |
423 | is the selected frame, this makes WINDOW the selected window. Optional | |
424 | argument NORECORD non-nil means to neither change the order of recently | |
425 | selected windows nor the buffer list. WINDOW must denote a live window. | |
426 | Return WINDOW. */) | |
427 | (Lisp_Object frame, Lisp_Object window, Lisp_Object norecord) | |
428 | { | |
429 | if (NILP (frame)) | |
430 | frame = selected_frame; | |
431 | ||
432 | CHECK_LIVE_FRAME (frame); | |
433 | CHECK_LIVE_WINDOW (window); | |
434 | ||
435 | if (! EQ (frame, WINDOW_FRAME (XWINDOW (window)))) | |
436 | error ("In `set-frame-selected-window', WINDOW is not on FRAME"); | |
437 | ||
438 | if (EQ (frame, selected_frame)) | |
439 | return Fselect_window (window, norecord); | |
440 | else | |
f00af5b1 PE |
441 | { |
442 | fset_selected_window (XFRAME (frame), window); | |
443 | return window; | |
444 | } | |
727e958e MR |
445 | } |
446 | ||
447 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
448 | doc: /* Return the selected window. | |
449 | The selected window is the window in which the standard cursor for | |
450 | selected windows appears and to which many commands apply. */) | |
451 | (void) | |
452 | { | |
453 | return selected_window; | |
454 | } | |
455 | ||
9397e56f MR |
456 | int window_select_count; |
457 | ||
727e958e MR |
458 | /* If select_window is called with inhibit_point_swap non-zero it will |
459 | not store point of the old selected window's buffer back into that | |
460 | window's pointm slot. This is needed by Fset_window_configuration to | |
461 | avoid that the display routine is called with selected_window set to | |
462 | Qnil causing a subsequent crash. */ | |
463 | static Lisp_Object | |
464 | select_window (Lisp_Object window, Lisp_Object norecord, int inhibit_point_swap) | |
465 | { | |
466 | register struct window *w; | |
467 | register struct window *ow; | |
468 | struct frame *sf; | |
469 | ||
470 | CHECK_LIVE_WINDOW (window); | |
471 | ||
472 | w = XWINDOW (window); | |
473 | w->frozen_window_start_p = 0; | |
474 | ||
475 | if (NILP (norecord)) | |
476 | { | |
45942c7d | 477 | w->use_time = ++window_select_count; |
d3d50620 | 478 | record_buffer (w->buffer); |
727e958e MR |
479 | } |
480 | ||
734fbd86 MR |
481 | /* Make the selected window's buffer current. */ |
482 | Fset_buffer (w->buffer); | |
483 | ||
727e958e MR |
484 | if (EQ (window, selected_window) && !inhibit_point_swap) |
485 | return window; | |
486 | ||
487 | sf = SELECTED_FRAME (); | |
488 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
489 | { | |
f00af5b1 | 490 | fset_selected_window (XFRAME (WINDOW_FRAME (w)), window); |
727e958e MR |
491 | /* Use this rather than Fhandle_switch_frame |
492 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
493 | move around in the state where a minibuffer in a separate | |
494 | frame is active. */ | |
495 | Fselect_frame (WINDOW_FRAME (w), norecord); | |
496 | /* Fselect_frame called us back so we've done all the work already. */ | |
497 | eassert (EQ (window, selected_window)); | |
498 | return window; | |
499 | } | |
500 | else | |
f00af5b1 | 501 | fset_selected_window (sf, window); |
727e958e | 502 | |
734fbd86 MR |
503 | /* Store the old selected window's buffer's point in pointm of the old |
504 | selected window. It belongs to that window, and when the window is | |
505 | not selected, must be in the window. */ | |
727e958e MR |
506 | if (!inhibit_point_swap) |
507 | { | |
508 | ow = XWINDOW (selected_window); | |
d3d50620 DA |
509 | if (! NILP (ow->buffer)) |
510 | set_marker_both (ow->pointm, ow->buffer, | |
511 | BUF_PT (XBUFFER (ow->buffer)), | |
512 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
727e958e MR |
513 | } |
514 | ||
515 | selected_window = window; | |
39eb03f1 | 516 | bset_last_selected_window (XBUFFER (w->buffer), window); |
727e958e MR |
517 | |
518 | /* Go to the point recorded in the window. | |
519 | This is important when the buffer is in more | |
520 | than one window. It also matters when | |
521 | redisplay_window has altered point after scrolling, | |
522 | because it makes the change only in the window. */ | |
523 | { | |
d3d50620 | 524 | register ptrdiff_t new_point = marker_position (w->pointm); |
727e958e MR |
525 | if (new_point < BEGV) |
526 | SET_PT (BEGV); | |
527 | else if (new_point > ZV) | |
528 | SET_PT (ZV); | |
529 | else | |
530 | SET_PT (new_point); | |
531 | } | |
532 | ||
533 | windows_or_buffers_changed++; | |
534 | return window; | |
535 | } | |
536 | ||
537 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, | |
538 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. | |
539 | Also make WINDOW's buffer current and make WINDOW the frame's selected | |
540 | window. Return WINDOW. | |
541 | ||
542 | Optional second arg NORECORD non-nil means do not put this buffer at the | |
543 | front of the buffer list and do not make this window the most recently | |
544 | selected one. | |
605be8af | 545 | |
727e958e MR |
546 | Note that the main editor command loop sets the current buffer to the |
547 | buffer of the selected window before each command. */) | |
548 | (register Lisp_Object window, Lisp_Object norecord) | |
549 | { | |
550 | return select_window (window, norecord, 0); | |
551 | } | |
552 | \f | |
bf60a96b | 553 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
49745b39 CY |
554 | doc: /* Return the buffer displayed in window WINDOW. |
555 | If WINDOW is omitted or nil, it defaults to the selected window. | |
556 | Return nil for an internal window or a deleted window. */) | |
bf60a96b MR |
557 | (Lisp_Object window) |
558 | { | |
d3d50620 | 559 | return decode_any_window (window)->buffer; |
bf60a96b MR |
560 | } |
561 | ||
562 | DEFUN ("window-parent", Fwindow_parent, Swindow_parent, 0, 1, 0, | |
49745b39 | 563 | doc: /* Return the parent window of window WINDOW. |
52162052 | 564 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 | 565 | Return nil for a window with no parent (e.g. a root window). */) |
bf60a96b MR |
566 | (Lisp_Object window) |
567 | { | |
52162052 | 568 | return decode_valid_window (window)->parent; |
bf60a96b MR |
569 | } |
570 | ||
49745b39 CY |
571 | DEFUN ("window-top-child", Fwindow_top_child, Swindow_top_child, 1, 1, 0, |
572 | doc: /* Return the topmost child window of window WINDOW. | |
52162052 | 573 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 CY |
574 | Return nil if WINDOW is a live window (live windows have no children). |
575 | Return nil if WINDOW is an internal window whose children form a | |
576 | horizontal combination. */) | |
bf60a96b MR |
577 | (Lisp_Object window) |
578 | { | |
49745b39 | 579 | CHECK_WINDOW (window); |
52162052 | 580 | return decode_valid_window (window)->vchild; |
bf60a96b MR |
581 | } |
582 | ||
49745b39 CY |
583 | DEFUN ("window-left-child", Fwindow_left_child, Swindow_left_child, 1, 1, 0, |
584 | doc: /* Return the leftmost child window of window WINDOW. | |
52162052 | 585 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 CY |
586 | Return nil if WINDOW is a live window (live windows have no children). |
587 | Return nil if WINDOW is an internal window whose children form a | |
588 | vertical combination. */) | |
bf60a96b MR |
589 | (Lisp_Object window) |
590 | { | |
49745b39 | 591 | CHECK_WINDOW (window); |
52162052 | 592 | return decode_valid_window (window)->hchild; |
bf60a96b MR |
593 | } |
594 | ||
d68443dc | 595 | DEFUN ("window-next-sibling", Fwindow_next_sibling, Swindow_next_sibling, 0, 1, 0, |
49745b39 | 596 | doc: /* Return the next sibling window of window WINDOW. |
52162052 | 597 | WINDOW must be a valid window and defaults to the selected one. |
d68443dc | 598 | Return nil if WINDOW has no next sibling. */) |
bf60a96b MR |
599 | (Lisp_Object window) |
600 | { | |
52162052 | 601 | return decode_valid_window (window)->next; |
bf60a96b MR |
602 | } |
603 | ||
d68443dc | 604 | DEFUN ("window-prev-sibling", Fwindow_prev_sibling, Swindow_prev_sibling, 0, 1, 0, |
49745b39 | 605 | doc: /* Return the previous sibling window of window WINDOW. |
52162052 | 606 | WINDOW must be a valid window and defaults to the selected one. |
d68443dc | 607 | Return nil if WINDOW has no previous sibling. */) |
bf60a96b MR |
608 | (Lisp_Object window) |
609 | { | |
52162052 | 610 | return decode_valid_window (window)->prev; |
bf60a96b | 611 | } |
67492200 | 612 | |
df05a53c | 613 | DEFUN ("window-combination-limit", Fwindow_combination_limit, Swindow_combination_limit, 1, 1, 0, |
b6f67890 | 614 | doc: /* Return combination limit of window WINDOW. |
52162052 | 615 | WINDOW must be a valid window and defaults to the selected one. |
be7f5545 | 616 | If the return value is nil, child windows of WINDOW can be recombined with |
b6f67890 | 617 | WINDOW's siblings. A return value of t means that child windows of |
496e208e | 618 | WINDOW are never \(re-)combined with WINDOW's siblings. */) |
496e208e | 619 | (Lisp_Object window) |
7ab12479 | 620 | { |
52162052 | 621 | return decode_valid_window (window)->combination_limit; |
7ab12479 | 622 | } |
53bb6b99 | 623 | |
b6f67890 | 624 | DEFUN ("set-window-combination-limit", Fset_window_combination_limit, Sset_window_combination_limit, 2, 2, 0, |
d2999b1a | 625 | doc: /* Set combination limit of window WINDOW to LIMIT; return LIMIT. |
52162052 | 626 | WINDOW must be a valid window and defaults to the selected one. |
d2999b1a MR |
627 | If LIMIT is nil, child windows of WINDOW can be recombined with |
628 | WINDOW's siblings. LIMIT t means that child windows of WINDOW are | |
b6f67890 MR |
629 | never \(re-)combined with WINDOW's siblings. Other values are reserved |
630 | for future use. */) | |
d2999b1a | 631 | (Lisp_Object window, Lisp_Object limit) |
b3a10345 | 632 | { |
e8c17b81 PE |
633 | wset_combination_limit (decode_valid_window (window), limit); |
634 | return limit; | |
496e208e | 635 | } |
7bbc67d2 | 636 | |
496e208e | 637 | DEFUN ("window-use-time", Fwindow_use_time, Swindow_use_time, 0, 1, 0, |
49745b39 | 638 | doc: /* Return the use time of window WINDOW. |
52162052 | 639 | WINDOW must be a live window and defaults to the selected one. |
49745b39 CY |
640 | The window with the highest use time is the most recently selected |
641 | one. The window with the lowest use time is the least recently | |
642 | selected one. */) | |
496e208e MR |
643 | (Lisp_Object window) |
644 | { | |
52162052 | 645 | return make_number (decode_live_window (window)->use_time); |
496e208e | 646 | } |
abde8f8c | 647 | \f |
105216ed CY |
648 | DEFUN ("window-total-height", Fwindow_total_height, Swindow_total_height, 0, 1, 0, |
649 | doc: /* Return the total height, in lines, of window WINDOW. | |
52162052 | 650 | WINDOW must be a valid window and defaults to the selected one. |
b3a10345 | 651 | |
105216ed CY |
652 | The return value includes the mode line and header line, if any. |
653 | If WINDOW is an internal window, the total height is the height | |
654 | of the screen areas spanned by its children. | |
536833ab | 655 | |
105216ed CY |
656 | On a graphical display, this total height is reported as an |
657 | integer multiple of the default character height. */) | |
658 | (Lisp_Object window) | |
496e208e | 659 | { |
52162052 | 660 | return decode_valid_window (window)->total_lines; |
105216ed | 661 | } |
536833ab | 662 | |
105216ed CY |
663 | DEFUN ("window-total-width", Fwindow_total_width, Swindow_total_width, 0, 1, 0, |
664 | doc: /* Return the total width, in columns, of window WINDOW. | |
52162052 | 665 | WINDOW must be a valid window and defaults to the selected one. |
b3a10345 | 666 | |
105216ed CY |
667 | The return value includes any vertical dividers or scroll bars |
668 | belonging to WINDOW. If WINDOW is an internal window, the total width | |
669 | is the width of the screen areas spanned by its children. | |
b3a10345 | 670 | |
105216ed CY |
671 | On a graphical display, this total width is reported as an |
672 | integer multiple of the default character width. */) | |
496e208e MR |
673 | (Lisp_Object window) |
674 | { | |
52162052 | 675 | return decode_valid_window (window)->total_cols; |
abde8f8c | 676 | } |
b3a10345 | 677 | |
496e208e | 678 | DEFUN ("window-new-total", Fwindow_new_total, Swindow_new_total, 0, 1, 0, |
49745b39 | 679 | doc: /* Return the new total size of window WINDOW. |
52162052 | 680 | WINDOW must be a valid window and defaults to the selected one. */) |
496e208e MR |
681 | (Lisp_Object window) |
682 | { | |
52162052 | 683 | return decode_valid_window (window)->new_total; |
496e208e MR |
684 | } |
685 | ||
686 | DEFUN ("window-normal-size", Fwindow_normal_size, Swindow_normal_size, 0, 2, 0, | |
49745b39 | 687 | doc: /* Return the normal height of window WINDOW. |
52162052 | 688 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 | 689 | If HORIZONTAL is non-nil, return the normal width of WINDOW. */) |
496e208e MR |
690 | (Lisp_Object window, Lisp_Object horizontal) |
691 | { | |
52162052 | 692 | struct window *w = decode_valid_window (window); |
d3d50620 DA |
693 | |
694 | return NILP (horizontal) ? w->normal_lines : w->normal_cols; | |
496e208e MR |
695 | } |
696 | ||
697 | DEFUN ("window-new-normal", Fwindow_new_normal, Swindow_new_normal, 0, 1, 0, | |
49745b39 | 698 | doc: /* Return new normal size of window WINDOW. |
52162052 | 699 | WINDOW must be a valid window and defaults to the selected one. */) |
496e208e MR |
700 | (Lisp_Object window) |
701 | { | |
52162052 | 702 | return decode_valid_window (window)->new_normal; |
496e208e MR |
703 | } |
704 | ||
abde8f8c | 705 | DEFUN ("window-left-column", Fwindow_left_column, Swindow_left_column, 0, 1, 0, |
49745b39 | 706 | doc: /* Return left column of window WINDOW. |
105216ed CY |
707 | This is the distance, in columns, between the left edge of WINDOW and |
708 | the left edge of the frame's window area. For instance, the return | |
709 | value is 0 if there is no window to the left of WINDOW. | |
710 | ||
52162052 | 711 | WINDOW must be a valid window and defaults to the selected one. */) |
abde8f8c MR |
712 | (Lisp_Object window) |
713 | { | |
52162052 | 714 | return decode_valid_window (window)->left_col; |
abde8f8c MR |
715 | } |
716 | ||
717 | DEFUN ("window-top-line", Fwindow_top_line, Swindow_top_line, 0, 1, 0, | |
49745b39 | 718 | doc: /* Return top line of window WINDOW. |
105216ed CY |
719 | This is the distance, in lines, between the top of WINDOW and the top |
720 | of the frame's window area. For instance, the return value is 0 if | |
721 | there is no window above WINDOW. | |
722 | ||
52162052 | 723 | WINDOW must be a valid window and defaults to the selected one. */) |
abde8f8c MR |
724 | (Lisp_Object window) |
725 | { | |
52162052 | 726 | return decode_valid_window (window)->top_line; |
abde8f8c MR |
727 | } |
728 | ||
729 | /* Return the number of lines of W's body. Don't count any mode or | |
730 | header line of W. */ | |
731 | ||
46a4ce9e | 732 | static int |
abde8f8c MR |
733 | window_body_lines (struct window *w) |
734 | { | |
d3d50620 | 735 | int height = XFASTINT (w->total_lines); |
abde8f8c MR |
736 | |
737 | if (!MINI_WINDOW_P (w)) | |
738 | { | |
739 | if (WINDOW_WANTS_MODELINE_P (w)) | |
740 | --height; | |
741 | if (WINDOW_WANTS_HEADER_LINE_P (w)) | |
742 | --height; | |
743 | } | |
744 | ||
745 | return height; | |
746 | } | |
747 | ||
748 | /* Return the number of columns of W's body. Don't count columns | |
749 | occupied by the scroll bar or the vertical bar separating W from its | |
750 | right sibling. On window-systems don't count fringes or display | |
751 | margins either. */ | |
752 | ||
753 | int | |
754 | window_body_cols (struct window *w) | |
755 | { | |
756 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
d3d50620 | 757 | int width = XINT (w->total_cols); |
abde8f8c MR |
758 | |
759 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) | |
760 | /* Scroll bars occupy a few columns. */ | |
761 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); | |
762 | else if (!FRAME_WINDOW_P (f) | |
763 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
764 | /* The column of `|' characters separating side-by-side windows | |
765 | occupies one column only. */ | |
766 | width -= 1; | |
767 | ||
768 | if (FRAME_WINDOW_P (f)) | |
769 | /* On window-systems, fringes and display margins cannot be | |
770 | used for normal text. */ | |
771 | width -= (WINDOW_FRINGE_COLS (w) | |
772 | + WINDOW_LEFT_MARGIN_COLS (w) | |
773 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
774 | ||
775 | return width; | |
776 | } | |
777 | ||
105216ed CY |
778 | DEFUN ("window-body-height", Fwindow_body_height, Swindow_body_height, 0, 1, 0, |
779 | doc: /* Return the height, in lines, of WINDOW's text area. | |
52162052 | 780 | WINDOW must be a live window and defaults to the selected one. |
89bd5ee1 | 781 | |
105216ed CY |
782 | The returned height does not include the mode line or header line. |
783 | On a graphical display, the height is expressed as an integer multiple | |
784 | of the default character height. If a line at the bottom of the text | |
785 | area is only partially visible, that counts as a whole line; to | |
786 | exclude partially-visible lines, use `window-text-height'. */) | |
787 | (Lisp_Object window) | |
abde8f8c | 788 | { |
52162052 | 789 | struct window *w = decode_live_window (window); |
105216ed CY |
790 | return make_number (window_body_lines (w)); |
791 | } | |
abde8f8c | 792 | |
105216ed CY |
793 | DEFUN ("window-body-width", Fwindow_body_width, Swindow_body_width, 0, 1, 0, |
794 | doc: /* Return the width, in columns, of WINDOW's text area. | |
52162052 | 795 | WINDOW must be a live window and defaults to the selected one. |
105216ed CY |
796 | |
797 | The return value does not include any vertical dividers, fringe or | |
798 | marginal areas, or scroll bars. On a graphical display, the width is | |
799 | expressed as an integer multiple of the default character width. */) | |
800 | (Lisp_Object window) | |
801 | { | |
52162052 | 802 | struct window *w = decode_live_window (window); |
105216ed | 803 | return make_number (window_body_cols (w)); |
abde8f8c | 804 | } |
536833ab | 805 | |
7ab12479 | 806 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 | 807 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
496e208e | 808 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 809 | (Lisp_Object window) |
7ab12479 | 810 | { |
52162052 | 811 | return make_number (decode_live_window (window)->hscroll); |
7ab12479 JB |
812 | } |
813 | ||
24a212eb PE |
814 | /* Set W's horizontal scroll amount to HSCROLL clipped to a reasonable |
815 | range, returning the new amount as a fixnum. */ | |
816 | static Lisp_Object | |
817 | set_window_hscroll (struct window *w, EMACS_INT hscroll) | |
818 | { | |
4e71fd89 PE |
819 | /* Horizontal scrolling has problems with large scroll amounts. |
820 | It's too slow with long lines, and even with small lines the | |
821 | display can be messed up. For now, though, impose only the limits | |
822 | required by the internal representation: horizontal scrolling must | |
823 | fit in fixnum (since it's visible to Elisp) and into ptrdiff_t | |
824 | (since it's stored in a ptrdiff_t). */ | |
825 | ptrdiff_t hscroll_max = min (MOST_POSITIVE_FIXNUM, PTRDIFF_MAX); | |
826 | ptrdiff_t new_hscroll = clip_to_bounds (0, hscroll, hscroll_max); | |
24a212eb PE |
827 | |
828 | /* Prevent redisplay shortcuts when changing the hscroll. */ | |
829 | if (w->hscroll != new_hscroll) | |
d3d50620 | 830 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
24a212eb PE |
831 | |
832 | w->hscroll = new_hscroll; | |
833 | return make_number (new_hscroll); | |
834 | } | |
835 | ||
7ab12479 | 836 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, |
fdb82f93 | 837 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
52162052 | 838 | WINDOW must be a live window and defaults to the selected one. |
24a212eb PE |
839 | Clip the number to a reasonable value if out of range. |
840 | Return the new number. NCOL should be zero or positive. | |
ebadb1e4 EZ |
841 | |
842 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 843 | window so that the location of point moves off-window. */) |
5842a27b | 844 | (Lisp_Object window, Lisp_Object ncol) |
7ab12479 | 845 | { |
52162052 | 846 | struct window *w = decode_live_window (window); |
7ab12479 | 847 | |
b7826503 | 848 | CHECK_NUMBER (ncol); |
24a212eb | 849 | return set_window_hscroll (w, XINT (ncol)); |
7ab12479 JB |
850 | } |
851 | ||
190eb263 RS |
852 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
853 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 854 | doc: /* Return WINDOW's redisplay end trigger value. |
52162052 | 855 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 856 | See `set-window-redisplay-end-trigger' for more information. */) |
5842a27b | 857 | (Lisp_Object window) |
190eb263 | 858 | { |
52162052 | 859 | return decode_live_window (window)->redisplay_end_trigger; |
190eb263 RS |
860 | } |
861 | ||
862 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
863 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 | 864 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
52162052 MR |
865 | WINDOW must be a live window and defaults to the selected one. VALUE |
866 | should be a buffer position (typically a marker) or nil. If it is a | |
867 | buffer position, then if redisplay in WINDOW reaches a position beyond | |
868 | VALUE, the functions in `redisplay-end-trigger-functions' are called | |
869 | with two arguments: WINDOW, and the end trigger value. Afterwards the | |
870 | end-trigger value is reset to nil. */) | |
5842a27b | 871 | (register Lisp_Object window, Lisp_Object value) |
190eb263 | 872 | { |
e8c17b81 PE |
873 | wset_redisplay_end_trigger (decode_live_window (window), value); |
874 | return value; | |
190eb263 RS |
875 | } |
876 | ||
7ab12479 | 877 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 | 878 | doc: /* Return a list of the edge coordinates of WINDOW. |
52162052 MR |
879 | WINDOW must be a valid window and defaults to the selected one. |
880 | ||
881 | The returned list has the form (LEFT TOP RIGHT BOTTOM). TOP and BOTTOM | |
882 | count by lines, and LEFT and RIGHT count by columns, all relative to 0, | |
883 | 0 at top left corner of frame. | |
884 | ||
885 | RIGHT is one more than the rightmost column occupied by WINDOW. BOTTOM | |
886 | is one more than the bottommost row occupied by WINDOW. The edges | |
887 | include the space used by WINDOW's scroll bar, display margins, fringes, | |
888 | header line, and/or mode line. For the edges of just the text area, use | |
889 | `window-inside-edges'. */) | |
5842a27b | 890 | (Lisp_Object window) |
7ab12479 | 891 | { |
52162052 | 892 | register struct window *w = decode_valid_window (window); |
7ab12479 | 893 | |
949cf20f KS |
894 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
895 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), | |
896 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), | |
897 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), | |
898 | Qnil)))); | |
7ab12479 JB |
899 | } |
900 | ||
c99a9eb3 RS |
901 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
902 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
52162052 MR |
903 | WINDOW must be a valid window and defaults to the selected one. |
904 | ||
905 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
906 | 0, 0 at the top left corner of the frame. | |
b35ac83e CY |
907 | |
908 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
909 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
910 | The pixel edges include the space used by WINDOW's scroll bar, display | |
911 | margins, fringes, header line, and/or mode line. For the pixel edges | |
912 | of just the text area, use `window-inside-pixel-edges'. */) | |
5842a27b | 913 | (Lisp_Object window) |
c99a9eb3 | 914 | { |
52162052 | 915 | register struct window *w = decode_valid_window (window); |
c99a9eb3 RS |
916 | |
917 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w)), | |
918 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w)), | |
919 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w)), | |
920 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w)), | |
921 | Qnil)))); | |
922 | } | |
923 | ||
9d5405ec | 924 | static void |
5e617bc2 | 925 | calc_absolute_offset (struct window *w, int *add_x, int *add_y) |
9d5405ec | 926 | { |
d3d50620 | 927 | struct frame *f = XFRAME (w->frame); |
9d5405ec J |
928 | *add_y = f->top_pos; |
929 | #ifdef FRAME_MENUBAR_HEIGHT | |
930 | *add_y += FRAME_MENUBAR_HEIGHT (f); | |
931 | #endif | |
bfeabdc3 JD |
932 | #ifdef FRAME_TOOLBAR_TOP_HEIGHT |
933 | *add_y += FRAME_TOOLBAR_TOP_HEIGHT (f); | |
934 | #elif FRAME_TOOLBAR_HEIGHT | |
9d5405ec J |
935 | *add_y += FRAME_TOOLBAR_HEIGHT (f); |
936 | #endif | |
937 | #ifdef FRAME_NS_TITLEBAR_HEIGHT | |
938 | *add_y += FRAME_NS_TITLEBAR_HEIGHT (f); | |
939 | #endif | |
940 | *add_x = f->left_pos; | |
bfeabdc3 JD |
941 | #ifdef FRAME_TOOLBAR_LEFT_WIDTH |
942 | *add_x += FRAME_TOOLBAR_LEFT_WIDTH (f); | |
943 | #endif | |
9d5405ec J |
944 | } |
945 | ||
946 | DEFUN ("window-absolute-pixel-edges", Fwindow_absolute_pixel_edges, | |
947 | Swindow_absolute_pixel_edges, 0, 1, 0, | |
948 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
52162052 MR |
949 | WINDOW must be a valid window and defaults to the selected one. |
950 | ||
951 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
952 | 0, 0 at the top left corner of the display. | |
9d5405ec J |
953 | |
954 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
955 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
956 | The pixel edges include the space used by WINDOW's scroll bar, display | |
957 | margins, fringes, header line, and/or mode line. For the pixel edges | |
c49d071a | 958 | of just the text area, use `window-inside-absolute-pixel-edges'. */) |
5842a27b | 959 | (Lisp_Object window) |
9d5405ec | 960 | { |
52162052 | 961 | register struct window *w = decode_valid_window (window); |
9d5405ec | 962 | int add_x, add_y; |
ed3751c8 | 963 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec J |
964 | |
965 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w) + add_x), | |
966 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w) + add_y), | |
967 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w) + add_x), | |
968 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w) + add_y), | |
969 | Qnil)))); | |
970 | } | |
971 | ||
c99a9eb3 RS |
972 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, |
973 | doc: /* Return a list of the edge coordinates of WINDOW. | |
52162052 MR |
974 | WINDOW must be a live window and defaults to the selected one. |
975 | ||
976 | The returned list has the form (LEFT TOP RIGHT BOTTOM). TOP and BOTTOM | |
977 | count by lines, and LEFT and RIGHT count by columns, all relative to 0, | |
978 | 0 at top left corner of frame. | |
b35ac83e CY |
979 | |
980 | RIGHT is one more than the rightmost column of WINDOW's text area. | |
52162052 MR |
981 | BOTTOM is one more than the bottommost row of WINDOW's text area. The |
982 | inside edges do not include the space used by the WINDOW's scroll bar, | |
983 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 984 | (Lisp_Object window) |
c99a9eb3 | 985 | { |
52162052 | 986 | register struct window *w = decode_live_window (window); |
c99a9eb3 RS |
987 | |
988 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w) | |
989 | + WINDOW_LEFT_MARGIN_COLS (w) | |
990 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
991 | make_number (WINDOW_TOP_EDGE_LINE (w) | |
992 | + WINDOW_HEADER_LINE_LINES (w)), | |
f3fbdb1f | 993 | make_number (WINDOW_BOX_RIGHT_EDGE_COL (w) |
c99a9eb3 RS |
994 | - WINDOW_RIGHT_MARGIN_COLS (w) |
995 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
996 | make_number (WINDOW_BOTTOM_EDGE_LINE (w) | |
997 | - WINDOW_MODE_LINE_LINES (w))); | |
998 | } | |
999 | ||
1000 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
2fbdc249 | 1001 | doc: /* Return a list of the edge pixel coordinates of WINDOW's text area. |
52162052 MR |
1002 | WINDOW must be a live window and defaults to the selected one. |
1003 | ||
1004 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
1005 | (0,0) at the top left corner of the frame's window area. | |
b35ac83e CY |
1006 | |
1007 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
1008 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
1009 | The inside edges do not include the space used by WINDOW's scroll bar, | |
c99a9eb3 | 1010 | display margins, fringes, header line, and/or mode line. */) |
5842a27b | 1011 | (Lisp_Object window) |
c99a9eb3 | 1012 | { |
52162052 | 1013 | register struct window *w = decode_live_window (window); |
c99a9eb3 RS |
1014 | |
1015 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
1016 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
1017 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
1018 | make_number (WINDOW_TOP_EDGE_Y (w) | |
1019 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
f3fbdb1f | 1020 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) |
c99a9eb3 RS |
1021 | - WINDOW_RIGHT_MARGIN_WIDTH (w) |
1022 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
1023 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
1024 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
1025 | } | |
1026 | ||
9d5405ec J |
1027 | DEFUN ("window-inside-absolute-pixel-edges", |
1028 | Fwindow_inside_absolute_pixel_edges, | |
1029 | Swindow_inside_absolute_pixel_edges, 0, 1, 0, | |
2fbdc249 | 1030 | doc: /* Return a list of the edge pixel coordinates of WINDOW's text area. |
52162052 MR |
1031 | WINDOW must be a live window and defaults to the selected one. |
1032 | ||
1033 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
1034 | (0,0) at the top left corner of the frame's window area. | |
9d5405ec J |
1035 | |
1036 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
1037 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
1038 | The inside edges do not include the space used by WINDOW's scroll bar, | |
1039 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 1040 | (Lisp_Object window) |
9d5405ec | 1041 | { |
52162052 | 1042 | register struct window *w = decode_live_window (window); |
9d5405ec | 1043 | int add_x, add_y; |
ed3751c8 | 1044 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec J |
1045 | |
1046 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
1047 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
1048 | + WINDOW_LEFT_FRINGE_WIDTH (w) + add_x), | |
1049 | make_number (WINDOW_TOP_EDGE_Y (w) | |
1050 | + WINDOW_HEADER_LINE_HEIGHT (w) + add_y), | |
1051 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) | |
1052 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
1053 | - WINDOW_RIGHT_FRINGE_WIDTH (w) + add_x), | |
1054 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
1055 | - WINDOW_MODE_LINE_HEIGHT (w) + add_y)); | |
1056 | } | |
1057 | ||
9173a8fb | 1058 | /* Test if the character at column X, row Y is within window W. |
341f3858 | 1059 | If it is not, return ON_NOTHING; |
9173a8fb | 1060 | if it is in the window's text area, return ON_TEXT; |
341f3858 | 1061 | if it is on the window's modeline, return ON_MODE_LINE; |
d5783c40 | 1062 | if it is on the border between the window and its right sibling, |
341f3858 | 1063 | return ON_VERTICAL_BORDER. |
9173a8fb | 1064 | if it is on a scroll bar, return ON_SCROLL_BAR. |
341f3858 | 1065 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 1066 | if it is in left or right fringe of the window, |
9173a8fb | 1067 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE; |
49b996e7 | 1068 | if it is in the marginal area to the left/right of the window, |
9173a8fb | 1069 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN. |
5500c422 GM |
1070 | |
1071 | X and Y are frame relative pixel coordinates. */ | |
1072 | ||
7442878f | 1073 | static enum window_part |
9173a8fb | 1074 | coordinates_in_window (register struct window *w, int x, int y) |
d5783c40 | 1075 | { |
b0228ace | 1076 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
7442878f | 1077 | enum window_part part; |
949cf20f | 1078 | int ux = FRAME_COLUMN_WIDTH (f); |
c7b08b0d MR |
1079 | int left_x = WINDOW_LEFT_EDGE_X (w); |
1080 | int right_x = WINDOW_RIGHT_EDGE_X (w); | |
1081 | int top_y = WINDOW_TOP_EDGE_Y (w); | |
1082 | int bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
dad75588 GM |
1083 | /* The width of the area where the vertical line can be dragged. |
1084 | (Between mode lines for instance. */ | |
1085 | int grabbable_width = ux; | |
949cf20f | 1086 | int lmargin_width, rmargin_width, text_left, text_right; |
9173a8fb | 1087 | |
c7b08b0d MR |
1088 | /* Outside any interesting row or column? */ |
1089 | if (y < top_y || y >= bottom_y || x < left_x || x >= right_x) | |
9173a8fb | 1090 | return ON_NOTHING; |
b0228ace | 1091 | |
c7b08b0d MR |
1092 | /* On the mode line or header line? */ |
1093 | if ((WINDOW_WANTS_MODELINE_P (w) | |
1094 | && y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w) | |
1095 | && (part = ON_MODE_LINE)) | |
1096 | || (WINDOW_WANTS_HEADER_LINE_P (w) | |
1097 | && y < top_y + CURRENT_HEADER_LINE_HEIGHT (w) | |
1098 | && (part = ON_HEADER_LINE))) | |
1099 | { | |
1100 | /* If it's under/over the scroll bar portion of the mode/header | |
1101 | line, say it's on the vertical line. That's to be able to | |
1102 | resize windows horizontally in case we're using toolkit scroll | |
1103 | bars. Note: If scrollbars are on the left, the window that | |
1104 | must be eventually resized is that on the left of WINDOW. */ | |
1105 | if ((WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) | |
1106 | && !WINDOW_LEFTMOST_P (w) | |
1107 | && eabs (x - left_x) < grabbable_width) | |
1108 | || (!WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) | |
1109 | && !WINDOW_RIGHTMOST_P (w) | |
1110 | && eabs (x - right_x) < grabbable_width)) | |
1111 | return ON_VERTICAL_BORDER; | |
1112 | else | |
1113 | return part; | |
1114 | } | |
1115 | ||
466539bc EZ |
1116 | /* In what's below, we subtract 1 when computing right_x because we |
1117 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
1118 | if (w->pseudo_window_p) |
1119 | { | |
1120 | left_x = 0; | |
949cf20f | 1121 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
5500c422 GM |
1122 | } |
1123 | else | |
1124 | { | |
949cf20f KS |
1125 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
1126 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
5500c422 | 1127 | } |
37962e60 | 1128 | |
949cf20f | 1129 | /* Outside any interesting column? */ |
9173a8fb CY |
1130 | if (x < left_x || x > right_x) |
1131 | return ON_SCROLL_BAR; | |
949cf20f KS |
1132 | |
1133 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
1134 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 1135 | |
949cf20f KS |
1136 | text_left = window_box_left (w, TEXT_AREA); |
1137 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
1138 | ||
1139 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 1140 | { |
447e9da0 | 1141 | if (!w->pseudo_window_p |
949cf20f | 1142 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 1143 | && !WINDOW_RIGHTMOST_P (w) |
9173a8fb CY |
1144 | && (eabs (x - right_x) < grabbable_width)) |
1145 | return ON_VERTICAL_BORDER; | |
fbad6f9a | 1146 | } |
9173a8fb CY |
1147 | /* Need to say "x > right_x" rather than >=, since on character |
1148 | terminals, the vertical line's x coordinate is right_x. */ | |
1149 | else if (!w->pseudo_window_p | |
1150 | && !WINDOW_RIGHTMOST_P (w) | |
1151 | && x > right_x - ux) | |
1152 | return ON_VERTICAL_BORDER; | |
1153 | ||
1154 | if (x < text_left) | |
949cf20f KS |
1155 | { |
1156 | if (lmargin_width > 0 | |
1157 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1158 | ? (x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) |
1159 | : (x < left_x + lmargin_width))) | |
1160 | return ON_LEFT_MARGIN; | |
1161 | ||
949cf20f KS |
1162 | return ON_LEFT_FRINGE; |
1163 | } | |
1164 | ||
9173a8fb | 1165 | if (x >= text_right) |
949cf20f KS |
1166 | { |
1167 | if (rmargin_width > 0 | |
1168 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1169 | ? (x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) |
1170 | : (x >= right_x - rmargin_width))) | |
1171 | return ON_RIGHT_MARGIN; | |
1172 | ||
949cf20f KS |
1173 | return ON_RIGHT_FRINGE; |
1174 | } | |
1175 | ||
1176 | /* Everything special ruled out - must be on text area */ | |
949cf20f | 1177 | return ON_TEXT; |
d5783c40 JB |
1178 | } |
1179 | ||
9173a8fb CY |
1180 | /* Take X is the frame-relative pixel x-coordinate, and return the |
1181 | x-coordinate relative to part PART of window W. */ | |
1182 | int | |
1183 | window_relative_x_coord (struct window *w, enum window_part part, int x) | |
1184 | { | |
1185 | int left_x = (w->pseudo_window_p) ? 0 : WINDOW_BOX_LEFT_EDGE_X (w); | |
1186 | ||
1187 | switch (part) | |
1188 | { | |
1189 | case ON_TEXT: | |
1190 | return x - window_box_left (w, TEXT_AREA); | |
1191 | ||
1192 | case ON_LEFT_FRINGE: | |
1193 | return x - left_x; | |
1194 | ||
1195 | case ON_RIGHT_FRINGE: | |
1196 | return x - left_x - WINDOW_LEFT_FRINGE_WIDTH (w); | |
1197 | ||
1198 | case ON_LEFT_MARGIN: | |
1199 | return (x - left_x | |
1200 | - ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1201 | ? WINDOW_LEFT_FRINGE_WIDTH (w) : 0)); | |
1202 | ||
1203 | case ON_RIGHT_MARGIN: | |
1204 | return (x + 1 | |
1205 | - ((w->pseudo_window_p) | |
1206 | ? WINDOW_TOTAL_WIDTH (w) | |
1207 | : WINDOW_BOX_RIGHT_EDGE_X (w)) | |
1208 | + window_box_width (w, RIGHT_MARGIN_AREA) | |
1209 | + ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1210 | ? WINDOW_RIGHT_FRINGE_WIDTH (w) : 0)); | |
1211 | } | |
1212 | ||
1213 | /* ON_SCROLL_BAR, ON_NOTHING, and ON_VERTICAL_BORDER: */ | |
1214 | return 0; | |
1215 | } | |
1216 | ||
b0228ace | 1217 | |
d5783c40 | 1218 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
1219 | Scoordinates_in_window_p, 2, 2, 0, |
1220 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
52162052 | 1221 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1222 | COORDINATES is a cons of the form (X . Y), X and Y being distances |
1223 | measured in characters from the upper-left corner of the frame. | |
23fe745a | 1224 | \(0 . 0) denotes the character in the upper left corner of the |
fdb82f93 PJ |
1225 | frame. |
1226 | If COORDINATES are in the text portion of WINDOW, | |
1227 | the coordinates relative to the window are returned. | |
1228 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
1229 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
1230 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
1231 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 1232 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
1233 | `vertical-line' is returned. |
1234 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
1235 | or `right-margin' is returned. */) | |
5842a27b | 1236 | (register Lisp_Object coordinates, Lisp_Object window) |
d5783c40 | 1237 | { |
5500c422 GM |
1238 | struct window *w; |
1239 | struct frame *f; | |
d5783c40 | 1240 | int x, y; |
5500c422 | 1241 | Lisp_Object lx, ly; |
d5783c40 | 1242 | |
52162052 | 1243 | w = decode_live_window (window); |
d3d50620 | 1244 | f = XFRAME (w->frame); |
b7826503 | 1245 | CHECK_CONS (coordinates); |
5500c422 GM |
1246 | lx = Fcar (coordinates); |
1247 | ly = Fcdr (coordinates); | |
b7826503 PJ |
1248 | CHECK_NUMBER_OR_FLOAT (lx); |
1249 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
1250 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
1251 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 | 1252 | |
9173a8fb | 1253 | switch (coordinates_in_window (w, x, y)) |
d5783c40 | 1254 | { |
7442878f | 1255 | case ON_NOTHING: |
d5783c40 JB |
1256 | return Qnil; |
1257 | ||
7442878f | 1258 | case ON_TEXT: |
9173a8fb CY |
1259 | /* Convert X and Y to window relative pixel coordinates, and |
1260 | return the canonical char units. */ | |
1261 | x -= window_box_left (w, TEXT_AREA); | |
1262 | y -= WINDOW_TOP_EDGE_Y (w); | |
949cf20f KS |
1263 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
1264 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 1265 | |
7442878f | 1266 | case ON_MODE_LINE: |
d5783c40 | 1267 | return Qmode_line; |
37962e60 | 1268 | |
7442878f | 1269 | case ON_VERTICAL_BORDER: |
e5d77022 | 1270 | return Qvertical_line; |
d5783c40 | 1271 | |
7442878f | 1272 | case ON_HEADER_LINE: |
045dee35 | 1273 | return Qheader_line; |
5500c422 | 1274 | |
7442878f GM |
1275 | case ON_LEFT_FRINGE: |
1276 | return Qleft_fringe; | |
177c0ea7 | 1277 | |
7442878f GM |
1278 | case ON_RIGHT_FRINGE: |
1279 | return Qright_fringe; | |
fbad6f9a | 1280 | |
49b996e7 GM |
1281 | case ON_LEFT_MARGIN: |
1282 | return Qleft_margin; | |
177c0ea7 | 1283 | |
49b996e7 GM |
1284 | case ON_RIGHT_MARGIN: |
1285 | return Qright_margin; | |
1286 | ||
6487f669 RS |
1287 | case ON_SCROLL_BAR: |
1288 | /* Historically we are supposed to return nil in this case. */ | |
1289 | return Qnil; | |
1290 | ||
d5783c40 | 1291 | default: |
1088b922 | 1292 | emacs_abort (); |
d5783c40 JB |
1293 | } |
1294 | } | |
1295 | ||
67492200 GM |
1296 | |
1297 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
1298 | Check if window W contains coordinates specified by USER_DATA which |
1299 | is actually a pointer to a struct check_window_data CW. | |
1300 | ||
1301 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
1302 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 1303 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
1304 | zero from this function to stop iterating over windows. */ |
1305 | ||
1306 | struct check_window_data | |
1307 | { | |
1308 | Lisp_Object *window; | |
9173a8fb | 1309 | int x, y; |
341f3858 | 1310 | enum window_part *part; |
f95464e4 | 1311 | }; |
67492200 GM |
1312 | |
1313 | static int | |
971de7fb | 1314 | check_window_containing (struct window *w, void *user_data) |
67492200 | 1315 | { |
f95464e4 | 1316 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
1317 | enum window_part found; |
1318 | int continue_p = 1; | |
67492200 | 1319 | |
f95464e4 | 1320 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1321 | if (found != ON_NOTHING) |
67492200 | 1322 | { |
341f3858 | 1323 | *cw->part = found; |
f95464e4 | 1324 | XSETWINDOW (*cw->window, w); |
7442878f | 1325 | continue_p = 0; |
67492200 | 1326 | } |
177c0ea7 | 1327 | |
7442878f | 1328 | return continue_p; |
67492200 GM |
1329 | } |
1330 | ||
1331 | ||
5500c422 | 1332 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1333 | return it as a Lisp_Object. |
1334 | ||
1335 | If X, Y is on one of the window's special `window_part' elements, | |
9173a8fb | 1336 | set *PART to the id of that element. |
949cf20f | 1337 | |
341f3858 | 1338 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1339 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1340 | ||
1341 | This function was previously implemented with a loop cycling over | |
1342 | windows with Fnext_window, and starting with the frame's selected | |
1343 | window. It turned out that this doesn't work with an | |
1344 | implementation of next_window using Vwindow_list, because | |
1345 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1346 | tree of F when this function is called asynchronously from | |
1347 | note_mouse_highlight. The original loop didn't terminate in this | |
1348 | case. */ | |
5500c422 | 1349 | |
7ab12479 | 1350 | Lisp_Object |
9173a8fb CY |
1351 | window_from_coordinates (struct frame *f, int x, int y, |
1352 | enum window_part *part, int tool_bar_p) | |
7ab12479 | 1353 | { |
67492200 | 1354 | Lisp_Object window; |
f95464e4 | 1355 | struct check_window_data cw; |
341f3858 KS |
1356 | enum window_part dummy; |
1357 | ||
1358 | if (part == 0) | |
1359 | part = &dummy; | |
5500c422 | 1360 | |
67492200 | 1361 | window = Qnil; |
9173a8fb | 1362 | cw.window = &window, cw.x = x, cw.y = y; cw.part = part; |
f95464e4 | 1363 | foreach_window (f, check_window_containing, &cw); |
177c0ea7 | 1364 | |
67492200 GM |
1365 | /* If not found above, see if it's in the tool bar window, if a tool |
1366 | bar exists. */ | |
1367 | if (NILP (window) | |
1368 | && tool_bar_p | |
e69b0960 DA |
1369 | && WINDOWP (f->tool_bar_window) |
1370 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 | |
1371 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), x, y) | |
7442878f | 1372 | != ON_NOTHING)) |
5500c422 | 1373 | { |
341f3858 | 1374 | *part = ON_TEXT; |
e69b0960 | 1375 | window = f->tool_bar_window; |
5500c422 | 1376 | } |
37962e60 | 1377 | |
67492200 | 1378 | return window; |
7ab12479 JB |
1379 | } |
1380 | ||
ab17c3f2 | 1381 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 | 1382 | doc: /* Return window containing coordinates X and Y on FRAME. |
496e208e | 1383 | FRAME must be a live frame and defaults to the selected one. |
fdb82f93 PJ |
1384 | The top left corner of the frame is considered to be row 0, |
1385 | column 0. */) | |
5842a27b | 1386 | (Lisp_Object x, Lisp_Object y, Lisp_Object frame) |
7ab12479 | 1387 | { |
5500c422 | 1388 | struct frame *f; |
7ab12479 | 1389 | |
44fa5b1e | 1390 | if (NILP (frame)) |
1ae1a37d | 1391 | frame = selected_frame; |
b7826503 | 1392 | CHECK_LIVE_FRAME (frame); |
5500c422 | 1393 | f = XFRAME (frame); |
7ab12479 | 1394 | |
5500c422 | 1395 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1396 | CHECK_NUMBER_OR_FLOAT (x); |
1397 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1398 | |
177c0ea7 | 1399 | return window_from_coordinates (f, |
2c77cf3b RS |
1400 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1401 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1402 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1403 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
9173a8fb | 1404 | 0, 0); |
7ab12479 JB |
1405 | } |
1406 | ||
1407 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1408 | doc: /* Return current value of point in WINDOW. |
496e208e | 1409 | WINDOW must be a live window and defaults to the selected one. |
c85322d0 | 1410 | |
5481664a MR |
1411 | For a nonselected window, this is the value point would have if that |
1412 | window were selected. | |
1413 | ||
1414 | Note that, when WINDOW is selected, the value returned is the same as | |
1415 | that returned by `point' for WINDOW's buffer. It would be more strictly | |
1416 | correct to return the `top-level' value of `point', outside of any | |
1417 | `save-excursion' forms. But that is hard to define. */) | |
5842a27b | 1418 | (Lisp_Object window) |
7ab12479 | 1419 | { |
52162052 | 1420 | register struct window *w = decode_live_window (window); |
7ab12479 | 1421 | |
5481664a MR |
1422 | if (w == XWINDOW (selected_window)) |
1423 | return make_number (BUF_PT (XBUFFER (w->buffer))); | |
1424 | else | |
1425 | return Fmarker_position (w->pointm); | |
7ab12479 JB |
1426 | } |
1427 | ||
1428 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1429 | doc: /* Return position at which display currently starts in WINDOW. |
496e208e | 1430 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 1431 | This is updated by redisplay or by calling `set-window-start'. */) |
5842a27b | 1432 | (Lisp_Object window) |
7ab12479 | 1433 | { |
52162052 | 1434 | return Fmarker_position (decode_live_window (window)->start); |
7ab12479 JB |
1435 | } |
1436 | ||
8646118f RS |
1437 | /* This is text temporarily removed from the doc string below. |
1438 | ||
fdb82f93 PJ |
1439 | This function returns nil if the position is not currently known. |
1440 | That happens when redisplay is preempted and doesn't finish. | |
1441 | If in that case you want to compute where the end of the window would | |
1442 | have been if redisplay had finished, do this: | |
1443 | (save-excursion | |
1444 | (goto-char (window-start window)) | |
1445 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1446 | (point))") */ |
1447 | ||
478292ed | 1448 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1449 | doc: /* Return position at which display currently ends in WINDOW. |
496e208e | 1450 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1451 | This is updated by redisplay, when it runs to completion. |
1452 | Simply changing the buffer text or setting `window-start' | |
1453 | does not update this value. | |
87e68db4 | 1454 | Return nil if there is no recorded value. (This can happen if the |
a0a37a6f | 1455 | last redisplay of WINDOW was preempted, and did not finish.) |
fdb82f93 PJ |
1456 | If UPDATE is non-nil, compute the up-to-date position |
1457 | if it isn't already recorded. */) | |
5842a27b | 1458 | (Lisp_Object window, Lisp_Object update) |
7ab12479 JB |
1459 | { |
1460 | Lisp_Object value; | |
52162052 | 1461 | struct window *w = decode_live_window (window); |
5a41ab94 | 1462 | Lisp_Object buf; |
31790df3 | 1463 | struct buffer *b; |
5a41ab94 | 1464 | |
d3d50620 | 1465 | buf = w->buffer; |
b7826503 | 1466 | CHECK_BUFFER (buf); |
b3a10345 | 1467 | b = XBUFFER (buf); |
5a41ab94 | 1468 | |
8646118f | 1469 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1470 | /* If we don't know the end position, return nil. |
1471 | The user can compute it with vertical-motion if he wants to. | |
1472 | It would be nicer to do it automatically, | |
1473 | but that's so slow that it would probably bother people. */ | |
d3d50620 | 1474 | if (NILP (w->window_end_valid)) |
7250968e | 1475 | return Qnil; |
8646118f | 1476 | #endif |
7250968e | 1477 | |
478292ed | 1478 | if (! NILP (update) |
d3d50620 | 1479 | && ! (! NILP (w->window_end_valid) |
80b00b08 DA |
1480 | && w->last_modified >= BUF_MODIFF (b) |
1481 | && w->last_overlay_modified >= BUF_OVERLAY_MODIFF (b)) | |
41791a20 | 1482 | && !noninteractive) |
478292ed | 1483 | { |
cbc099e5 GM |
1484 | struct text_pos startp; |
1485 | struct it it; | |
b3a10345 | 1486 | struct buffer *old_buffer = NULL; |
57b3e30b | 1487 | void *itdata = NULL; |
b3a10345 KS |
1488 | |
1489 | /* Cannot use Fvertical_motion because that function doesn't | |
1490 | cope with variable-height lines. */ | |
1491 | if (b != current_buffer) | |
1492 | { | |
1493 | old_buffer = current_buffer; | |
1494 | set_buffer_internal (b); | |
1495 | } | |
2d6d9df0 GM |
1496 | |
1497 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1498 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1499 | `-l' containing a call to `rmail' with subsequent other |
1500 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1501 | rmail had already narrowed the buffer. */ |
d3d50620 | 1502 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 1503 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
d3d50620 | 1504 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 1505 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1506 | else |
d3d50620 | 1507 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
cbc099e5 | 1508 | |
57b3e30b | 1509 | itdata = bidi_shelve_cache (); |
cbc099e5 GM |
1510 | start_display (&it, w, startp); |
1511 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1512 | if (it.current_y < it.last_visible_y) |
1513 | move_it_past_eol (&it); | |
cbc099e5 | 1514 | value = make_number (IT_CHARPOS (it)); |
35928349 | 1515 | bidi_unshelve_cache (itdata, 0); |
177c0ea7 | 1516 | |
99593a9d GM |
1517 | if (old_buffer) |
1518 | set_buffer_internal (old_buffer); | |
478292ed RS |
1519 | } |
1520 | else | |
d3d50620 | 1521 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1522 | |
1523 | return value; | |
1524 | } | |
1525 | ||
a7ca3326 | 1526 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, |
a0a37a6f | 1527 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
52162052 | 1528 | WINDOW must be a live window and defaults to the selected one. |
a0a37a6f | 1529 | Return POS. */) |
5842a27b | 1530 | (Lisp_Object window, Lisp_Object pos) |
7ab12479 | 1531 | { |
52162052 | 1532 | register struct window *w = decode_live_window (window); |
7ab12479 | 1533 | |
b7826503 | 1534 | CHECK_NUMBER_COERCE_MARKER (pos); |
799417bd | 1535 | |
5481664a MR |
1536 | if (w == XWINDOW (selected_window)) |
1537 | { | |
1538 | if (XBUFFER (w->buffer) == current_buffer) | |
1539 | Fgoto_char (pos); | |
1540 | else | |
1541 | { | |
1542 | struct buffer *old_buffer = current_buffer; | |
1543 | ||
1544 | set_buffer_internal (XBUFFER (w->buffer)); | |
1545 | Fgoto_char (pos); | |
1546 | set_buffer_internal (old_buffer); | |
1547 | } | |
1548 | } | |
1549 | else | |
1550 | { | |
1551 | set_marker_restricted (w->pointm, pos, w->buffer); | |
1552 | /* We have to make sure that redisplay updates the window to show | |
1553 | the new value of point. */ | |
1554 | ++windows_or_buffers_changed; | |
1555 | } | |
177c0ea7 | 1556 | |
7ab12479 JB |
1557 | return pos; |
1558 | } | |
1559 | ||
1560 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1561 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
52162052 MR |
1562 | WINDOW must be a live window and defaults to the selected one. Return |
1563 | POS. Optional third arg NOFORCE non-nil inhibits next redisplay from | |
d653c8cc | 1564 | overriding motion of point in order to display at this exact start. */) |
5842a27b | 1565 | (Lisp_Object window, Lisp_Object pos, Lisp_Object noforce) |
7ab12479 | 1566 | { |
52162052 | 1567 | register struct window *w = decode_live_window (window); |
7ab12479 | 1568 | |
b7826503 | 1569 | CHECK_NUMBER_COERCE_MARKER (pos); |
d3d50620 | 1570 | set_marker_restricted (w->start, pos, w->buffer); |
7ab12479 | 1571 | /* this is not right, but much easier than doing what is right. */ |
c98ff5dd | 1572 | w->start_at_line_beg = 0; |
265a9e55 | 1573 | if (NILP (noforce)) |
c98ff5dd DA |
1574 | w->force_start = 1; |
1575 | w->update_mode_line = 1; | |
80b00b08 DA |
1576 | w->last_modified = 0; |
1577 | w->last_overlay_modified = 0; | |
62c07cc7 JB |
1578 | if (!EQ (window, selected_window)) |
1579 | windows_or_buffers_changed++; | |
ce7fae7d | 1580 | |
7ab12479 JB |
1581 | return pos; |
1582 | } | |
1583 | ||
496e208e MR |
1584 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
1585 | Spos_visible_in_window_p, 0, 3, 0, | |
1586 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. | |
52162052 MR |
1587 | WINDOW must be a live window and defaults to the selected one. |
1588 | ||
1589 | Return nil if that position is scrolled vertically out of view. If a | |
1590 | character is only partially visible, nil is returned, unless the | |
1591 | optional argument PARTIALLY is non-nil. If POS is only out of view | |
1592 | because of horizontal scrolling, return non-nil. If POS is t, it | |
1593 | specifies the position of the last visible glyph in WINDOW. POS | |
1594 | defaults to point in WINDOW; WINDOW defaults to the selected window. | |
496e208e MR |
1595 | |
1596 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
1597 | return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), | |
1598 | where X and Y are the pixel coordinates relative to the top left corner | |
1599 | of the window. The remaining elements are omitted if the character after | |
1600 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
1601 | off-window at the top and bottom of the row, ROWH is the height of the | |
1602 | display row, and VPOS is the row number (0-based) containing POS. */) | |
1603 | (Lisp_Object pos, Lisp_Object window, Lisp_Object partially) | |
1604 | { | |
1605 | register struct window *w; | |
1606 | register EMACS_INT posint; | |
1607 | register struct buffer *buf; | |
1608 | struct text_pos top; | |
1609 | Lisp_Object in_window = Qnil; | |
1610 | int rtop, rbot, rowh, vpos, fully_p = 1; | |
1611 | int x, y; | |
1612 | ||
52162052 | 1613 | w = decode_live_window (window); |
d3d50620 DA |
1614 | buf = XBUFFER (w->buffer); |
1615 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
496e208e MR |
1616 | |
1617 | if (EQ (pos, Qt)) | |
1618 | posint = -1; | |
1619 | else if (!NILP (pos)) | |
1620 | { | |
1621 | CHECK_NUMBER_COERCE_MARKER (pos); | |
1622 | posint = XINT (pos); | |
1623 | } | |
1624 | else if (w == XWINDOW (selected_window)) | |
1625 | posint = PT; | |
1626 | else | |
d3d50620 | 1627 | posint = XMARKER (w->pointm)->charpos; |
496e208e MR |
1628 | |
1629 | /* If position is above window start or outside buffer boundaries, | |
1630 | or if window start is out of range, position is not visible. */ | |
1631 | if ((EQ (pos, Qt) | |
1632 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
1633 | && CHARPOS (top) >= BUF_BEGV (buf) | |
1634 | && CHARPOS (top) <= BUF_ZV (buf) | |
1635 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) | |
1636 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) | |
1637 | in_window = Qt; | |
1638 | ||
1639 | if (!NILP (in_window) && !NILP (partially)) | |
1640 | { | |
1641 | Lisp_Object part = Qnil; | |
1642 | if (!fully_p) | |
1643 | part = list4 (make_number (rtop), make_number (rbot), | |
1644 | make_number (rowh), make_number (vpos)); | |
1645 | in_window = Fcons (make_number (x), | |
1646 | Fcons (make_number (y), part)); | |
1647 | } | |
1648 | ||
1649 | return in_window; | |
1650 | } | |
1651 | ||
1652 | DEFUN ("window-line-height", Fwindow_line_height, | |
1653 | Swindow_line_height, 0, 2, 0, | |
1654 | doc: /* Return height in pixels of text line LINE in window WINDOW. | |
52162052 | 1655 | WINDOW must be a live window and defaults to the selected one. |
496e208e MR |
1656 | |
1657 | Return height of current line if LINE is omitted or nil. Return height of | |
1658 | header or mode line if LINE is `header-line' or `mode-line'. | |
1659 | Otherwise, LINE is a text line number starting from 0. A negative number | |
1660 | counts from the end of the window. | |
1661 | ||
1662 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height | |
1663 | in pixels of the visible part of the line, VPOS and YPOS are the | |
1664 | vertical position in lines and pixels of the line, relative to the top | |
1665 | of the first text line, and OFFBOT is the number of off-window pixels at | |
1666 | the bottom of the text line. If there are off-window pixels at the top | |
1667 | of the (first) text line, YPOS is negative. | |
1668 | ||
1669 | Return nil if window display is not up-to-date. In that case, use | |
1670 | `pos-visible-in-window-p' to obtain the information. */) | |
1671 | (Lisp_Object line, Lisp_Object window) | |
1672 | { | |
1673 | register struct window *w; | |
1674 | register struct buffer *b; | |
1675 | struct glyph_row *row, *end_row; | |
d311d28c PE |
1676 | int max_y, crop, i; |
1677 | EMACS_INT n; | |
496e208e | 1678 | |
52162052 | 1679 | w = decode_live_window (window); |
496e208e MR |
1680 | |
1681 | if (noninteractive || w->pseudo_window_p) | |
1682 | return Qnil; | |
1683 | ||
d3d50620 DA |
1684 | CHECK_BUFFER (w->buffer); |
1685 | b = XBUFFER (w->buffer); | |
496e208e MR |
1686 | |
1687 | /* Fail if current matrix is not up-to-date. */ | |
d3d50620 | 1688 | if (NILP (w->window_end_valid) |
496e208e MR |
1689 | || current_buffer->clip_changed |
1690 | || current_buffer->prevent_redisplay_optimizations_p | |
80b00b08 DA |
1691 | || w->last_modified < BUF_MODIFF (b) |
1692 | || w->last_overlay_modified < BUF_OVERLAY_MODIFF (b)) | |
496e208e MR |
1693 | return Qnil; |
1694 | ||
1695 | if (NILP (line)) | |
1696 | { | |
1697 | i = w->cursor.vpos; | |
1698 | if (i < 0 || i >= w->current_matrix->nrows | |
1699 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
1700 | return Qnil; | |
1701 | max_y = window_text_bottom_y (w); | |
1702 | goto found_row; | |
1703 | } | |
1704 | ||
1705 | if (EQ (line, Qheader_line)) | |
1706 | { | |
1707 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) | |
1708 | return Qnil; | |
1709 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
1710 | if (!row->enabled_p) | |
1711 | return Qnil; | |
1712 | return list4 (make_number (row->height), | |
1713 | make_number (0), make_number (0), | |
1714 | make_number (0)); | |
1715 | } | |
1716 | ||
1717 | if (EQ (line, Qmode_line)) | |
1718 | { | |
1719 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); | |
1720 | if (!row->enabled_p) | |
1721 | return Qnil; | |
1722 | return list4 (make_number (row->height), | |
1723 | make_number (0), /* not accurate */ | |
1724 | make_number (WINDOW_HEADER_LINE_HEIGHT (w) | |
1725 | + window_text_bottom_y (w)), | |
1726 | make_number (0)); | |
1727 | } | |
1728 | ||
1729 | CHECK_NUMBER (line); | |
1730 | n = XINT (line); | |
1731 | ||
1732 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
1733 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
1734 | max_y = window_text_bottom_y (w); | |
1735 | i = 0; | |
1736 | ||
1737 | while ((n < 0 || i < n) | |
1738 | && row <= end_row && row->enabled_p | |
1739 | && row->y + row->height < max_y) | |
1740 | row++, i++; | |
1741 | ||
1742 | if (row > end_row || !row->enabled_p) | |
1743 | return Qnil; | |
1744 | ||
1745 | if (++n < 0) | |
1746 | { | |
1747 | if (-n > i) | |
1748 | return Qnil; | |
1749 | row += n; | |
1750 | i += n; | |
1751 | } | |
1752 | ||
1753 | found_row: | |
1754 | crop = max (0, (row->y + row->height) - max_y); | |
1755 | return list4 (make_number (row->height + min (0, row->y) - crop), | |
1756 | make_number (i), | |
1757 | make_number (row->y), | |
1758 | make_number (crop)); | |
1759 | } | |
d653c8cc | 1760 | |
a7ca3326 | 1761 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, |
d653c8cc MR |
1762 | 0, 1, 0, |
1763 | doc: /* Return non-nil when WINDOW is dedicated to its buffer. | |
12bb3111 | 1764 | More precisely, return the value assigned by the last call of |
7bfac547 MR |
1765 | `set-window-dedicated-p' for WINDOW. Return nil if that function was |
1766 | never called with WINDOW as its argument, or the value set by that | |
52162052 MR |
1767 | function was internally reset since its last call. WINDOW must be a |
1768 | live window and defaults to the selected one. | |
7bfac547 MR |
1769 | |
1770 | When a window is dedicated to its buffer, `display-buffer' will refrain | |
1771 | from displaying another buffer in it. `get-lru-window' and | |
1772 | `get-largest-window' treat dedicated windows specially. | |
1773 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1774 | `kill-buffer' can delete a dedicated window and the containing frame. | |
1775 | ||
1776 | Functions like `set-window-buffer' may change the buffer displayed by a | |
1777 | window, unless that window is "strongly" dedicated to its buffer, that | |
1778 | is the value returned by `window-dedicated-p' is t. */) | |
5842a27b | 1779 | (Lisp_Object window) |
7ab12479 | 1780 | { |
52162052 | 1781 | return decode_live_window (window)->dedicated; |
7ab12479 JB |
1782 | } |
1783 | ||
d207b766 RS |
1784 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1785 | Sset_window_dedicated_p, 2, 2, 0, | |
d653c8cc | 1786 | doc: /* Mark WINDOW as dedicated according to FLAG. |
496e208e MR |
1787 | WINDOW must be a live window and defaults to the selected one. FLAG |
1788 | non-nil means mark WINDOW as dedicated to its buffer. FLAG nil means | |
1789 | mark WINDOW as non-dedicated. Return FLAG. | |
d653c8cc | 1790 | |
7bfac547 MR |
1791 | When a window is dedicated to its buffer, `display-buffer' will refrain |
1792 | from displaying another buffer in it. `get-lru-window' and | |
1793 | `get-largest-window' treat dedicated windows specially. | |
496e208e MR |
1794 | `delete-windows-on', `replace-buffer-in-windows', `quit-window', |
1795 | `quit-restore-window' and `kill-buffer' can delete a dedicated window | |
1796 | and the containing frame. | |
7bfac547 MR |
1797 | |
1798 | As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to | |
1799 | its buffer. Functions like `set-window-buffer' may change the buffer | |
1800 | displayed by a window, unless that window is strongly dedicated to its | |
1801 | buffer. If and when `set-window-buffer' displays another buffer in a | |
496e208e | 1802 | window, it also makes sure that the window is no more dedicated. */) |
5842a27b | 1803 | (Lisp_Object window, Lisp_Object flag) |
7ab12479 | 1804 | { |
e8c17b81 PE |
1805 | wset_dedicated (decode_live_window (window), flag); |
1806 | return flag; | |
7ab12479 JB |
1807 | } |
1808 | ||
496e208e MR |
1809 | DEFUN ("window-prev-buffers", Fwindow_prev_buffers, Swindow_prev_buffers, |
1810 | 0, 1, 0, | |
1811 | doc: /* Return buffers previously shown in WINDOW. | |
1812 | WINDOW must be a live window and defaults to the selected one. | |
1813 | ||
94e0933e CY |
1814 | The return value is a list of elements (BUFFER WINDOW-START POS), |
1815 | where BUFFER is a buffer, WINDOW-START is the start position of the | |
1816 | window for that buffer, and POS is a window-specific point value. */) | |
496e208e MR |
1817 | (Lisp_Object window) |
1818 | { | |
52162052 | 1819 | return decode_live_window (window)->prev_buffers; |
496e208e MR |
1820 | } |
1821 | ||
1822 | DEFUN ("set-window-prev-buffers", Fset_window_prev_buffers, | |
1823 | Sset_window_prev_buffers, 2, 2, 0, | |
1824 | doc: /* Set WINDOW's previous buffers to PREV-BUFFERS. | |
94e0933e | 1825 | WINDOW must be a live window and defaults to the selected one. |
496e208e | 1826 | |
94e0933e CY |
1827 | PREV-BUFFERS should be a list of elements (BUFFER WINDOW-START POS), |
1828 | where BUFFER is a buffer, WINDOW-START is the start position of the | |
1829 | window for that buffer, and POS is a window-specific point value. */) | |
496e208e MR |
1830 | (Lisp_Object window, Lisp_Object prev_buffers) |
1831 | { | |
e8c17b81 PE |
1832 | wset_prev_buffers (decode_live_window (window), prev_buffers); |
1833 | return prev_buffers; | |
496e208e MR |
1834 | } |
1835 | ||
1836 | DEFUN ("window-next-buffers", Fwindow_next_buffers, Swindow_next_buffers, | |
1837 | 0, 1, 0, | |
1838 | doc: /* Return list of buffers recently re-shown in WINDOW. | |
1839 | WINDOW must be a live window and defaults to the selected one. */) | |
1840 | (Lisp_Object window) | |
1841 | { | |
52162052 | 1842 | return decode_live_window (window)->next_buffers; |
496e208e MR |
1843 | } |
1844 | ||
1845 | DEFUN ("set-window-next-buffers", Fset_window_next_buffers, | |
1846 | Sset_window_next_buffers, 2, 2, 0, | |
1847 | doc: /* Set WINDOW's next buffers to NEXT-BUFFERS. | |
94e0933e CY |
1848 | WINDOW must be a live window and defaults to the selected one. |
1849 | NEXT-BUFFERS should be a list of buffers. */) | |
496e208e MR |
1850 | (Lisp_Object window, Lisp_Object next_buffers) |
1851 | { | |
e8c17b81 PE |
1852 | wset_next_buffers (decode_live_window (window), next_buffers); |
1853 | return next_buffers; | |
496e208e | 1854 | } |
d653c8cc | 1855 | |
cfbb2395 JB |
1856 | DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters, |
1857 | 0, 1, 0, | |
d653c8cc | 1858 | doc: /* Return the parameters of WINDOW and their values. |
52162052 MR |
1859 | WINDOW must be a valid window and defaults to the selected one. The |
1860 | return value is a list of elements of the form (PARAMETER . VALUE). */) | |
5842a27b | 1861 | (Lisp_Object window) |
cfbb2395 | 1862 | { |
52162052 | 1863 | return Fcopy_alist (decode_valid_window (window)->window_parameters); |
cfbb2395 JB |
1864 | } |
1865 | ||
1866 | DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter, | |
1867 | 2, 2, 0, | |
d653c8cc | 1868 | doc: /* Return WINDOW's value for PARAMETER. |
52162052 | 1869 | WINDOW must be a valid window and defaults to the selected one. */) |
5842a27b | 1870 | (Lisp_Object window, Lisp_Object parameter) |
cfbb2395 | 1871 | { |
927abf37 JB |
1872 | Lisp_Object result; |
1873 | ||
52162052 | 1874 | result = Fassq (parameter, decode_valid_window (window)->window_parameters); |
927abf37 | 1875 | return CDR_SAFE (result); |
cfbb2395 JB |
1876 | } |
1877 | ||
cfbb2395 JB |
1878 | DEFUN ("set-window-parameter", Fset_window_parameter, |
1879 | Sset_window_parameter, 3, 3, 0, | |
d653c8cc | 1880 | doc: /* Set WINDOW's value of PARAMETER to VALUE. |
52162052 MR |
1881 | WINDOW must be a valid window and defaults to the selected one. |
1882 | Return VALUE. */) | |
5842a27b | 1883 | (Lisp_Object window, Lisp_Object parameter, Lisp_Object value) |
cfbb2395 | 1884 | { |
52162052 | 1885 | register struct window *w = decode_valid_window (window); |
cfbb2395 JB |
1886 | Lisp_Object old_alist_elt; |
1887 | ||
d3d50620 | 1888 | old_alist_elt = Fassq (parameter, w->window_parameters); |
12bb3111 | 1889 | if (NILP (old_alist_elt)) |
e8c17b81 PE |
1890 | wset_window_parameters |
1891 | (w, Fcons (Fcons (parameter, value), w->window_parameters)); | |
cfbb2395 JB |
1892 | else |
1893 | Fsetcdr (old_alist_elt, value); | |
927abf37 | 1894 | return value; |
cfbb2395 JB |
1895 | } |
1896 | ||
7ab12479 JB |
1897 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, |
1898 | 0, 1, 0, | |
c85322d0 | 1899 | doc: /* Return the display-table that WINDOW is using. |
52162052 | 1900 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 1901 | (Lisp_Object window) |
7ab12479 | 1902 | { |
52162052 | 1903 | return decode_live_window (window)->display_table; |
7ab12479 JB |
1904 | } |
1905 | ||
5500c422 GM |
1906 | /* Get the display table for use on window W. This is either W's |
1907 | display table or W's buffer's display table. Ignore the specified | |
1908 | tables if they are not valid; if no valid table is specified, | |
1909 | return 0. */ | |
7ab12479 | 1910 | |
319315f1 | 1911 | struct Lisp_Char_Table * |
971de7fb | 1912 | window_display_table (struct window *w) |
7ab12479 | 1913 | { |
c756cdbe GM |
1914 | struct Lisp_Char_Table *dp = NULL; |
1915 | ||
d3d50620 DA |
1916 | if (DISP_TABLE_P (w->display_table)) |
1917 | dp = XCHAR_TABLE (w->display_table); | |
1918 | else if (BUFFERP (w->buffer)) | |
c756cdbe | 1919 | { |
d3d50620 | 1920 | struct buffer *b = XBUFFER (w->buffer); |
177c0ea7 | 1921 | |
4b4deea2 TT |
1922 | if (DISP_TABLE_P (BVAR (b, display_table))) |
1923 | dp = XCHAR_TABLE (BVAR (b, display_table)); | |
c756cdbe GM |
1924 | else if (DISP_TABLE_P (Vstandard_display_table)) |
1925 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1926 | } | |
171d003c | 1927 | |
c756cdbe | 1928 | return dp; |
7ab12479 JB |
1929 | } |
1930 | ||
3a2712f9 | 1931 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
52162052 MR |
1932 | doc: /* Set WINDOW's display-table to TABLE. |
1933 | WINDOW must be a live window and defaults to the selected one. */) | |
5842a27b | 1934 | (register Lisp_Object window, Lisp_Object table) |
7ab12479 | 1935 | { |
e8c17b81 PE |
1936 | wset_display_table (decode_live_window (window), table); |
1937 | return table; | |
7ab12479 JB |
1938 | } |
1939 | \f | |
562dd5e9 | 1940 | /* Record info on buffer window W is displaying |
7ab12479 | 1941 | when it is about to cease to display that buffer. */ |
dfcf069d | 1942 | static void |
971de7fb | 1943 | unshow_buffer (register struct window *w) |
7ab12479 | 1944 | { |
12cae7c0 | 1945 | Lisp_Object buf; |
b73ea88e | 1946 | struct buffer *b; |
7ab12479 | 1947 | |
d3d50620 | 1948 | buf = w->buffer; |
b73ea88e | 1949 | b = XBUFFER (buf); |
d3d50620 | 1950 | if (b != XMARKER (w->pointm)->buffer) |
1088b922 | 1951 | emacs_abort (); |
7ab12479 | 1952 | |
573f41ab | 1953 | #if 0 |
7ab12479 | 1954 | if (w == XWINDOW (selected_window) |
d3d50620 | 1955 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) |
7ab12479 JB |
1956 | /* Do this except when the selected window's buffer |
1957 | is being removed from some other window. */ | |
573f41ab RS |
1958 | #endif |
1959 | /* last_window_start records the start position that this buffer | |
1960 | had in the last window to be disconnected from it. | |
1961 | Now that this statement is unconditional, | |
1962 | it is possible for the buffer to be displayed in the | |
1963 | selected window, while last_window_start reflects another | |
1964 | window which was recently showing the same buffer. | |
1965 | Some people might say that might be a good thing. Let's see. */ | |
d3d50620 | 1966 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1967 | |
1968 | /* Point in the selected window's buffer | |
1969 | is actually stored in that buffer, and the window's pointm isn't used. | |
1970 | So don't clobber point in that buffer. */ | |
d3d50620 | 1971 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
c4b6914d MR |
1972 | /* Don't clobber point in current buffer either (this could be |
1973 | useful in connection with bug#12208). | |
1974 | && XBUFFER (buf) != current_buffer */ | |
719eaeb1 | 1975 | /* This line helps to fix Horsley's testbug.el bug. */ |
4b4deea2 TT |
1976 | && !(WINDOWP (BVAR (b, last_selected_window)) |
1977 | && w != XWINDOW (BVAR (b, last_selected_window)) | |
d3d50620 | 1978 | && EQ (buf, XWINDOW (BVAR (b, last_selected_window))->buffer))) |
b73ea88e RS |
1979 | temp_set_point_both (b, |
1980 | clip_to_bounds (BUF_BEGV (b), | |
d3d50620 | 1981 | XMARKER (w->pointm)->charpos, |
b73ea88e RS |
1982 | BUF_ZV (b)), |
1983 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
d3d50620 | 1984 | marker_byte_position (w->pointm), |
b73ea88e | 1985 | BUF_ZV_BYTE (b))); |
177c0ea7 | 1986 | |
4b4deea2 TT |
1987 | if (WINDOWP (BVAR (b, last_selected_window)) |
1988 | && w == XWINDOW (BVAR (b, last_selected_window))) | |
39eb03f1 | 1989 | bset_last_selected_window (b, Qnil); |
7ab12479 JB |
1990 | } |
1991 | ||
1a13852e MR |
1992 | /* Put NEW into the window structure in place of OLD. SETFLAG zero |
1993 | means change window structure only. Otherwise store geometry and | |
1994 | other settings as well. */ | |
dfcf069d | 1995 | static void |
1a13852e | 1996 | replace_window (Lisp_Object old, Lisp_Object new, int setflag) |
7ab12479 JB |
1997 | { |
1998 | register Lisp_Object tem; | |
1a13852e | 1999 | register struct window *o = XWINDOW (old), *n = XWINDOW (new); |
7ab12479 | 2000 | |
1a13852e MR |
2001 | /* If OLD is its frame's root window, then NEW is the new |
2002 | root window for that frame. */ | |
d3d50620 | 2003 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
f00af5b1 | 2004 | fset_root_window (XFRAME (o->frame), new); |
077288cf DA |
2005 | |
2006 | if (setflag) | |
2007 | { | |
e8c17b81 PE |
2008 | wset_left_col (n, o->left_col); |
2009 | wset_top_line (n, o->top_line); | |
2010 | wset_total_cols (n, o->total_cols); | |
2011 | wset_total_lines (n, o->total_lines); | |
2012 | wset_normal_cols (n, o->normal_cols); | |
2013 | wset_normal_cols (o, make_float (1.0)); | |
2014 | wset_normal_lines (n, o->normal_lines); | |
2015 | wset_normal_lines (o, make_float (1.0)); | |
1a13852e MR |
2016 | n->desired_matrix = n->current_matrix = 0; |
2017 | n->vscroll = 0; | |
2018 | memset (&n->cursor, 0, sizeof (n->cursor)); | |
2019 | memset (&n->last_cursor, 0, sizeof (n->last_cursor)); | |
2020 | memset (&n->phys_cursor, 0, sizeof (n->phys_cursor)); | |
2021 | n->phys_cursor_type = -1; | |
2022 | n->phys_cursor_width = -1; | |
2023 | n->must_be_updated_p = 0; | |
2024 | n->pseudo_window_p = 0; | |
e8c17b81 PE |
2025 | wset_window_end_vpos (n, make_number (0)); |
2026 | wset_window_end_pos (n, make_number (0)); | |
2027 | wset_window_end_valid (n, Qnil); | |
1a13852e | 2028 | n->frozen_window_start_p = 0; |
1a13852e MR |
2029 | } |
2030 | ||
d3d50620 | 2031 | tem = o->next; |
e8c17b81 | 2032 | wset_next (n, tem); |
265a9e55 | 2033 | if (!NILP (tem)) |
e8c17b81 | 2034 | wset_prev (XWINDOW (tem), new); |
7ab12479 | 2035 | |
d3d50620 | 2036 | tem = o->prev; |
e8c17b81 | 2037 | wset_prev (n, tem); |
265a9e55 | 2038 | if (!NILP (tem)) |
e8c17b81 | 2039 | wset_next (XWINDOW (tem), new); |
7ab12479 | 2040 | |
d3d50620 | 2041 | tem = o->parent; |
e8c17b81 | 2042 | wset_parent (n, tem); |
265a9e55 | 2043 | if (!NILP (tem)) |
7ab12479 | 2044 | { |
d3d50620 | 2045 | if (EQ (XWINDOW (tem)->vchild, old)) |
e8c17b81 | 2046 | wset_vchild (XWINDOW (tem), new); |
d3d50620 | 2047 | if (EQ (XWINDOW (tem)->hchild, old)) |
e8c17b81 | 2048 | wset_hchild (XWINDOW (tem), new); |
7ab12479 | 2049 | } |
1a13852e MR |
2050 | } |
2051 | ||
2052 | /* If window WINDOW and its parent window are iso-combined, merge | |
2053 | WINDOW's children into those of its parent window and mark WINDOW as | |
2054 | deleted. */ | |
2055 | ||
2056 | static void | |
2057 | recombine_windows (Lisp_Object window) | |
2058 | { | |
2059 | struct window *w, *p, *c; | |
2060 | Lisp_Object parent, child; | |
2061 | int horflag; | |
2062 | ||
2063 | w = XWINDOW (window); | |
d3d50620 DA |
2064 | parent = w->parent; |
2065 | if (!NILP (parent) && NILP (w->combination_limit)) | |
1a13852e MR |
2066 | { |
2067 | p = XWINDOW (parent); | |
d3d50620 DA |
2068 | if (((!NILP (p->vchild) && !NILP (w->vchild)) |
2069 | || (!NILP (p->hchild) && !NILP (w->hchild)))) | |
1a13852e MR |
2070 | /* WINDOW and PARENT are both either a vertical or a horizontal |
2071 | combination. */ | |
2072 | { | |
d3d50620 DA |
2073 | horflag = NILP (w->vchild); |
2074 | child = horflag ? w->hchild : w->vchild; | |
1a13852e MR |
2075 | c = XWINDOW (child); |
2076 | ||
2077 | /* Splice WINDOW's children into its parent's children and | |
2078 | assign new normal sizes. */ | |
d3d50620 | 2079 | if (NILP (w->prev)) |
1a13852e | 2080 | if (horflag) |
e8c17b81 | 2081 | wset_hchild (p, child); |
1a13852e | 2082 | else |
e8c17b81 | 2083 | wset_vchild (p, child); |
1a13852e MR |
2084 | else |
2085 | { | |
e8c17b81 PE |
2086 | wset_prev (c, w->prev); |
2087 | wset_next (XWINDOW (w->prev), child); | |
1a13852e MR |
2088 | } |
2089 | ||
2090 | while (c) | |
2091 | { | |
e8c17b81 | 2092 | wset_parent (c, parent); |
1a13852e MR |
2093 | |
2094 | if (horflag) | |
e8c17b81 PE |
2095 | wset_normal_cols (c, |
2096 | make_float (XFLOATINT (c->total_cols) | |
2097 | / XFLOATINT (p->total_cols))); | |
1a13852e | 2098 | else |
e8c17b81 PE |
2099 | wset_normal_lines (c, |
2100 | make_float (XFLOATINT (c->total_lines) | |
2101 | / XFLOATINT (p->total_lines))); | |
1a13852e | 2102 | |
d3d50620 | 2103 | if (NILP (c->next)) |
1a13852e | 2104 | { |
d3d50620 | 2105 | if (!NILP (w->next)) |
1a13852e | 2106 | { |
e8c17b81 PE |
2107 | wset_next (c, w->next); |
2108 | wset_prev (XWINDOW (c->next), child); | |
1a13852e MR |
2109 | } |
2110 | ||
2111 | c = 0; | |
2112 | } | |
2113 | else | |
2114 | { | |
d3d50620 | 2115 | child = c->next; |
1a13852e MR |
2116 | c = XWINDOW (child); |
2117 | } | |
2118 | } | |
7ab12479 | 2119 | |
1a13852e | 2120 | /* WINDOW can be deleted now. */ |
e8c17b81 PE |
2121 | wset_vchild (w, Qnil); |
2122 | wset_hchild (w, Qnil); | |
1a13852e MR |
2123 | } |
2124 | } | |
7ab12479 | 2125 | } |
6198ccd0 MR |
2126 | |
2127 | /* If WINDOW can be deleted, delete it. */ | |
4475bec4 | 2128 | static void |
6198ccd0 MR |
2129 | delete_deletable_window (Lisp_Object window) |
2130 | { | |
2131 | if (!NILP (call1 (Qwindow_deletable_p, window))) | |
2132 | call1 (Qdelete_window, window); | |
2133 | } | |
1a13852e | 2134 | \f |
67492200 GM |
2135 | /*********************************************************************** |
2136 | Window List | |
2137 | ***********************************************************************/ | |
2138 | ||
f95464e4 GM |
2139 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
2140 | pointer. This is a callback function for foreach_window, used in | |
496e208e | 2141 | the window_list function. */ |
67492200 GM |
2142 | |
2143 | static int | |
971de7fb | 2144 | add_window_to_list (struct window *w, void *user_data) |
67492200 | 2145 | { |
f95464e4 | 2146 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
2147 | Lisp_Object window; |
2148 | XSETWINDOW (window, w); | |
212116d6 | 2149 | *list = Fcons (window, *list); |
67492200 GM |
2150 | return 1; |
2151 | } | |
2152 | ||
2153 | ||
2154 | /* Return a list of all windows, for use by next_window. If | |
2155 | Vwindow_list is a list, return that list. Otherwise, build a new | |
2156 | list, cache it in Vwindow_list, and return that. */ | |
2157 | ||
2158 | static Lisp_Object | |
971de7fb | 2159 | window_list (void) |
67492200 GM |
2160 | { |
2161 | if (!CONSP (Vwindow_list)) | |
2162 | { | |
2163 | Lisp_Object tail; | |
212116d6 | 2164 | |
67492200 GM |
2165 | Vwindow_list = Qnil; |
2166 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
2167 | { |
2168 | Lisp_Object args[2]; | |
2169 | ||
2170 | /* We are visiting windows in canonical order, and add | |
2171 | new windows at the front of args[1], which means we | |
2172 | have to reverse this list at the end. */ | |
2173 | args[1] = Qnil; | |
2174 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
2175 | args[0] = Vwindow_list; | |
2176 | args[1] = Fnreverse (args[1]); | |
2177 | Vwindow_list = Fnconc (2, args); | |
2178 | } | |
67492200 | 2179 | } |
177c0ea7 | 2180 | |
67492200 GM |
2181 | return Vwindow_list; |
2182 | } | |
2183 | ||
2184 | ||
118ea242 GM |
2185 | /* Value is non-zero if WINDOW satisfies the constraints given by |
2186 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 2187 | |
118ea242 GM |
2188 | MINIBUF t means WINDOW may be minibuffer windows. |
2189 | `lambda' means WINDOW may not be a minibuffer window. | |
2190 | a window means a specific minibuffer window | |
67492200 | 2191 | |
118ea242 GM |
2192 | ALL_FRAMES t means search all frames, |
2193 | nil means search just current frame, | |
aa248733 MS |
2194 | `visible' means search just visible frames on the |
2195 | current terminal, | |
2196 | 0 means search visible and iconified frames on the | |
2197 | current terminal, | |
118ea242 GM |
2198 | a window means search the frame that window belongs to, |
2199 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
2200 | |
2201 | static int | |
971de7fb | 2202 | candidate_window_p (Lisp_Object window, Lisp_Object owindow, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 GM |
2203 | { |
2204 | struct window *w = XWINDOW (window); | |
d3d50620 | 2205 | struct frame *f = XFRAME (w->frame); |
67492200 GM |
2206 | int candidate_p = 1; |
2207 | ||
d3d50620 | 2208 | if (!BUFFERP (w->buffer)) |
67492200 GM |
2209 | candidate_p = 0; |
2210 | else if (MINI_WINDOW_P (w) | |
2211 | && (EQ (minibuf, Qlambda) | |
2212 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
2213 | { | |
2214 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
2215 | If it is a window, consider only that one. */ | |
2216 | candidate_p = 0; | |
2217 | } | |
118ea242 GM |
2218 | else if (EQ (all_frames, Qt)) |
2219 | candidate_p = 1; | |
67492200 | 2220 | else if (NILP (all_frames)) |
118ea242 | 2221 | { |
a54e2c05 | 2222 | eassert (WINDOWP (owindow)); |
d3d50620 | 2223 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); |
118ea242 | 2224 | } |
67492200 GM |
2225 | else if (EQ (all_frames, Qvisible)) |
2226 | { | |
2227 | FRAME_SAMPLE_VISIBILITY (f); | |
de509a60 | 2228 | candidate_p = FRAME_VISIBLE_P (f) |
d3d50620 | 2229 | && (FRAME_TERMINAL (XFRAME (w->frame)) |
de509a60 SM |
2230 | == FRAME_TERMINAL (XFRAME (selected_frame))); |
2231 | ||
67492200 GM |
2232 | } |
2233 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
2234 | { | |
2235 | FRAME_SAMPLE_VISIBILITY (f); | |
ca2d5566 SM |
2236 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
2237 | #ifdef HAVE_X_WINDOWS | |
2238 | /* Yuck!! If we've just created the frame and the | |
2239 | window-manager requested the user to place it | |
2240 | manually, the window may still not be considered | |
2241 | `visible'. I'd argue it should be at least | |
2242 | something like `iconified', but don't know how to do | |
2243 | that yet. --Stef */ | |
2244 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
2245 | && !f->output_data.x->has_been_visible) | |
2246 | #endif | |
de509a60 | 2247 | ) |
d3d50620 | 2248 | && (FRAME_TERMINAL (XFRAME (w->frame)) |
de509a60 | 2249 | == FRAME_TERMINAL (XFRAME (selected_frame))); |
67492200 | 2250 | } |
67492200 GM |
2251 | else if (WINDOWP (all_frames)) |
2252 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
d3d50620 DA |
2253 | || EQ (XWINDOW (all_frames)->frame, w->frame) |
2254 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 | 2255 | else if (FRAMEP (all_frames)) |
d3d50620 | 2256 | candidate_p = EQ (all_frames, w->frame); |
67492200 GM |
2257 | |
2258 | return candidate_p; | |
2259 | } | |
2260 | ||
2261 | ||
2262 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
aa248733 MS |
2263 | Fwindow_list. See candidate_window_p for the meaning of WINDOW, |
2264 | MINIBUF, and ALL_FRAMES. */ | |
67492200 GM |
2265 | |
2266 | static void | |
971de7fb | 2267 | decode_next_window_args (Lisp_Object *window, Lisp_Object *minibuf, Lisp_Object *all_frames) |
67492200 GM |
2268 | { |
2269 | if (NILP (*window)) | |
2270 | *window = selected_window; | |
2271 | else | |
b7826503 | 2272 | CHECK_LIVE_WINDOW (*window); |
177c0ea7 | 2273 | |
67492200 GM |
2274 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
2275 | does. */ | |
2276 | if (NILP (*minibuf)) | |
2277 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
2278 | else if (!EQ (*minibuf, Qt)) | |
2279 | *minibuf = Qlambda; | |
177c0ea7 | 2280 | |
67492200 GM |
2281 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
2282 | => count none of them, or a specific minibuffer window (the | |
2283 | active one) to count. */ | |
2284 | ||
2285 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
2286 | if (NILP (*all_frames)) | |
f00af5b1 | 2287 | *all_frames |
3a45383a | 2288 | = (!EQ (*minibuf, Qlambda) |
d3d50620 | 2289 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) |
3a45383a | 2290 | : Qnil); |
67492200 GM |
2291 | else if (EQ (*all_frames, Qvisible)) |
2292 | ; | |
0f8fe9a2 | 2293 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
2294 | ; |
2295 | else if (FRAMEP (*all_frames)) | |
2296 | ; | |
2297 | else if (!EQ (*all_frames, Qt)) | |
2298 | *all_frames = Qnil; | |
67492200 GM |
2299 | } |
2300 | ||
2301 | ||
ab6d1131 | 2302 | /* Return the next or previous window of WINDOW in cyclic ordering |
67492200 GM |
2303 | of windows. NEXT_P non-zero means return the next window. See the |
2304 | documentation string of next-window for the meaning of MINIBUF and | |
2305 | ALL_FRAMES. */ | |
2306 | ||
2307 | static Lisp_Object | |
971de7fb | 2308 | next_window (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames, int next_p) |
67492200 GM |
2309 | { |
2310 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 2311 | |
67492200 GM |
2312 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
2313 | return the first window on the frame. */ | |
2314 | if (FRAMEP (all_frames) | |
d3d50620 | 2315 | && !EQ (all_frames, XWINDOW (window)->frame)) |
67492200 | 2316 | return Fframe_first_window (all_frames); |
177c0ea7 | 2317 | |
212116d6 | 2318 | if (next_p) |
67492200 GM |
2319 | { |
2320 | Lisp_Object list; | |
177c0ea7 | 2321 | |
67492200 GM |
2322 | /* Find WINDOW in the list of all windows. */ |
2323 | list = Fmemq (window, window_list ()); | |
2324 | ||
2325 | /* Scan forward from WINDOW to the end of the window list. */ | |
2326 | if (CONSP (list)) | |
2327 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 2328 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2329 | break; |
2330 | ||
2331 | /* Scan from the start of the window list up to WINDOW. */ | |
2332 | if (!CONSP (list)) | |
2333 | for (list = Vwindow_list; | |
2334 | CONSP (list) && !EQ (XCAR (list), window); | |
2335 | list = XCDR (list)) | |
118ea242 | 2336 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2337 | break; |
2338 | ||
2339 | if (CONSP (list)) | |
2340 | window = XCAR (list); | |
2341 | } | |
2342 | else | |
2343 | { | |
2344 | Lisp_Object candidate, list; | |
177c0ea7 | 2345 | |
67492200 GM |
2346 | /* Scan through the list of windows for candidates. If there are |
2347 | candidate windows in front of WINDOW, the last one of these | |
2348 | is the one we want. If there are candidates following WINDOW | |
2349 | in the list, again the last one of these is the one we want. */ | |
2350 | candidate = Qnil; | |
2351 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
2352 | { | |
2353 | if (EQ (XCAR (list), window)) | |
2354 | { | |
2355 | if (WINDOWP (candidate)) | |
2356 | break; | |
2357 | } | |
118ea242 GM |
2358 | else if (candidate_window_p (XCAR (list), window, minibuf, |
2359 | all_frames)) | |
67492200 GM |
2360 | candidate = XCAR (list); |
2361 | } | |
2362 | ||
2363 | if (WINDOWP (candidate)) | |
2364 | window = candidate; | |
2365 | } | |
2366 | ||
2367 | return window; | |
2368 | } | |
7ab12479 | 2369 | |
7ab12479 | 2370 | |
a7ca3326 | 2371 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
a9b9b7f5 | 2372 | doc: /* Return live window after WINDOW in the cyclic ordering of windows. |
87e68db4 | 2373 | WINDOW must be a live window and defaults to the selected one. The |
9397e56f MR |
2374 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to |
2375 | consider. | |
2376 | ||
2377 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2378 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2379 | even if the minibuffer is not active. Any other value means do not | |
2380 | consider the minibuffer window even if the minibuffer is active. | |
2381 | ||
2382 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2383 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2384 | minibuffer counts, consider all windows on all frames that share that | |
2385 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2386 | meanings: | |
2387 | ||
2388 | - t means consider all windows on all existing frames. | |
2389 | ||
2390 | - `visible' means consider all windows on all visible frames. | |
2391 | ||
2392 | - 0 (the number zero) means consider all windows on all visible and | |
2393 | iconified frames. | |
2394 | ||
2395 | - A frame means consider all windows on that frame only. | |
ab6d1131 | 2396 | |
ab6d1131 | 2397 | Anything else means consider all windows on WINDOW's frame and no |
9397e56f | 2398 | others. |
fdb82f93 PJ |
2399 | |
2400 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
2401 | `next-window' to iterate through the entire cycle of acceptable | |
2402 | windows, eventually ending up back at the window you started with. | |
2403 | `previous-window' traverses the same cycle, in the reverse order. */) | |
5842a27b | 2404 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2405 | { |
67492200 | 2406 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
2407 | } |
2408 | ||
67492200 | 2409 | |
26f6279d | 2410 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
a9b9b7f5 | 2411 | doc: /* Return live window before WINDOW in the cyclic ordering of windows. |
9397e56f MR |
2412 | WINDOW must be a live window and defaults to the selected one. The |
2413 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to | |
2414 | consider. | |
2415 | ||
2416 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2417 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2418 | even if the minibuffer is not active. Any other value means do not | |
2419 | consider the minibuffer window even if the minibuffer is active. | |
2420 | ||
2421 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2422 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2423 | minibuffer counts, consider all windows on all frames that share that | |
2424 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2425 | meanings: | |
2426 | ||
2427 | - t means consider all windows on all existing frames. | |
2428 | ||
2429 | - `visible' means consider all windows on all visible frames. | |
2430 | ||
2431 | - 0 (the number zero) means consider all windows on all visible and | |
2432 | iconified frames. | |
2433 | ||
2434 | - A frame means consider all windows on that frame only. | |
2435 | ||
2436 | Anything else means consider all windows on WINDOW's frame and no | |
2437 | others. | |
ab6d1131 MR |
2438 | |
2439 | If you use consistent values for MINIBUF and ALL-FRAMES, you can | |
2440 | use `previous-window' to iterate through the entire cycle of | |
2441 | acceptable windows, eventually ending up back at the window you | |
2442 | started with. `next-window' traverses the same cycle, in the | |
2443 | reverse order. */) | |
5842a27b | 2444 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2445 | { |
67492200 | 2446 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2447 | } |
2448 | ||
67492200 | 2449 | |
ab6d1131 | 2450 | /* Return a list of windows in cyclic ordering. Arguments are like |
cd2904bd GM |
2451 | for `next-window'. */ |
2452 | ||
2453 | static Lisp_Object | |
971de7fb | 2454 | window_list_1 (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 | 2455 | { |
403de3b4 | 2456 | Lisp_Object tail, list, rest; |
67492200 GM |
2457 | |
2458 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2459 | list = Qnil; | |
177c0ea7 | 2460 | |
67492200 | 2461 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2462 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2463 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2464 | |
403de3b4 RS |
2465 | /* Rotate the list to start with WINDOW. */ |
2466 | list = Fnreverse (list); | |
2467 | rest = Fmemq (window, list); | |
2468 | if (!NILP (rest) && !EQ (rest, list)) | |
2469 | { | |
1725a7c9 | 2470 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2471 | ; |
2472 | XSETCDR (tail, Qnil); | |
2473 | list = nconc2 (rest, list); | |
2474 | } | |
2475 | return list; | |
67492200 GM |
2476 | } |
2477 | ||
2478 | ||
abde8f8c MR |
2479 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, |
2480 | doc: /* Return a list of windows on FRAME, starting with WINDOW. | |
2481 | FRAME nil or omitted means use the selected frame. | |
49745b39 | 2482 | WINDOW nil or omitted means use the window selected within FRAME. |
abde8f8c MR |
2483 | MINIBUF t means include the minibuffer window, even if it isn't active. |
2484 | MINIBUF nil or omitted means include the minibuffer window only | |
2485 | if it's active. | |
2486 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2487 | (Lisp_Object frame, Lisp_Object minibuf, Lisp_Object window) | |
2488 | { | |
2489 | if (NILP (window)) | |
e69b0960 | 2490 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
abde8f8c MR |
2491 | CHECK_WINDOW (window); |
2492 | if (NILP (frame)) | |
2493 | frame = selected_frame; | |
2494 | ||
d3d50620 | 2495 | if (!EQ (frame, XWINDOW (window)->frame)) |
abde8f8c MR |
2496 | error ("Window is on a different frame"); |
2497 | ||
2498 | return window_list_1 (window, minibuf, frame); | |
2499 | } | |
2500 | ||
2501 | ||
1a13852e MR |
2502 | DEFUN ("window-list-1", Fwindow_list_1, Swindow_list_1, 0, 3, 0, |
2503 | doc: /* Return a list of all live windows. | |
2504 | WINDOW specifies the first window to list and defaults to the selected | |
2505 | window. | |
2506 | ||
2507 | Optional argument MINIBUF nil or omitted means consider the minibuffer | |
2508 | window only if the minibuffer is active. MINIBUF t means consider the | |
2509 | minibuffer window even if the minibuffer is not active. Any other value | |
2510 | means do not consider the minibuffer window even if the minibuffer is | |
2511 | active. | |
2512 | ||
2513 | Optional argument ALL-FRAMES nil or omitted means consider all windows | |
2514 | on WINDOW's frame, plus the minibuffer window if specified by the | |
2515 | MINIBUF argument. If the minibuffer counts, consider all windows on all | |
2516 | frames that share that minibuffer too. The following non-nil values of | |
2517 | ALL-FRAMES have special meanings: | |
2518 | ||
2519 | - t means consider all windows on all existing frames. | |
2520 | ||
2521 | - `visible' means consider all windows on all visible frames. | |
2522 | ||
2523 | - 0 (the number zero) means consider all windows on all visible and | |
2524 | iconified frames. | |
2525 | ||
2526 | - A frame means consider all windows on that frame only. | |
2527 | ||
2528 | Anything else means consider all windows on WINDOW's frame and no | |
2529 | others. | |
2530 | ||
2531 | If WINDOW is not on the list of windows returned, some other window will | |
8350f087 | 2532 | be listed first but no error is signaled. */) |
1a13852e MR |
2533 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
2534 | { | |
2535 | return window_list_1 (window, minibuf, all_frames); | |
2536 | } | |
7ab12479 JB |
2537 | \f |
2538 | /* Look at all windows, performing an operation specified by TYPE | |
2539 | with argument OBJ. | |
75d8f668 | 2540 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2541 | Qnil, look at just the selected frame; |
89bca612 | 2542 | Qvisible, look at visible frames; |
75d8f668 | 2543 | a frame, just look at windows on that frame. |
85fe3b5e | 2544 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2545 | |
2546 | enum window_loop | |
2547 | { | |
2548 | WINDOW_LOOP_UNUSED, | |
9397e56f MR |
2549 | GET_BUFFER_WINDOW, /* Arg is buffer */ |
2550 | REPLACE_BUFFER_IN_WINDOWS_SAFELY, /* Arg is buffer */ | |
2551 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ | |
3f8ab7bd | 2552 | CHECK_ALL_WINDOWS |
7ab12479 JB |
2553 | }; |
2554 | ||
2555 | static Lisp_Object | |
971de7fb | 2556 | window_loop (enum window_loop type, Lisp_Object obj, int mini, Lisp_Object frames) |
7ab12479 | 2557 | { |
118ea242 | 2558 | Lisp_Object window, windows, best_window, frame_arg; |
9397e56f | 2559 | int frame_best_window_flag = 0; |
118ea242 | 2560 | struct frame *f; |
ffdc852d | 2561 | struct gcpro gcpro1; |
177c0ea7 | 2562 | |
44fa5b1e JB |
2563 | /* If we're only looping through windows on a particular frame, |
2564 | frame points to that frame. If we're looping through windows | |
2565 | on all frames, frame is 0. */ | |
2566 | if (FRAMEP (frames)) | |
118ea242 | 2567 | f = XFRAME (frames); |
44fa5b1e | 2568 | else if (NILP (frames)) |
118ea242 | 2569 | f = SELECTED_FRAME (); |
7ab12479 | 2570 | else |
118ea242 | 2571 | f = NULL; |
177c0ea7 | 2572 | |
118ea242 | 2573 | if (f) |
89bca612 | 2574 | frame_arg = Qlambda; |
0f8fe9a2 | 2575 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2576 | frame_arg = frames; |
89bca612 RS |
2577 | else if (EQ (frames, Qvisible)) |
2578 | frame_arg = frames; | |
118ea242 GM |
2579 | else |
2580 | frame_arg = Qt; | |
7ab12479 | 2581 | |
89bca612 RS |
2582 | /* frame_arg is Qlambda to stick to one frame, |
2583 | Qvisible to consider all visible frames, | |
2584 | or Qt otherwise. */ | |
2585 | ||
7ab12479 | 2586 | /* Pick a window to start with. */ |
017b2bad | 2587 | if (WINDOWP (obj)) |
118ea242 GM |
2588 | window = obj; |
2589 | else if (f) | |
2590 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2591 | else |
118ea242 | 2592 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2593 | |
cd2904bd | 2594 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2595 | GCPRO1 (windows); |
7ab12479 | 2596 | best_window = Qnil; |
118ea242 | 2597 | |
e67a1dea | 2598 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2599 | { |
118ea242 | 2600 | struct window *w; |
177c0ea7 | 2601 | |
118ea242 GM |
2602 | window = XCAR (windows); |
2603 | w = XWINDOW (window); | |
177c0ea7 | 2604 | |
118ea242 GM |
2605 | /* Note that we do not pay attention here to whether the frame |
2606 | is visible, since Fwindow_list skips non-visible frames if | |
2607 | that is desired, under the control of frame_arg. */ | |
2608 | if (!MINI_WINDOW_P (w) | |
9397e56f MR |
2609 | /* For REPLACE_BUFFER_IN_WINDOWS_SAFELY, we must always |
2610 | consider all windows. */ | |
2611 | || type == REPLACE_BUFFER_IN_WINDOWS_SAFELY | |
7ab12479 JB |
2612 | || (mini && minibuf_level > 0)) |
2613 | switch (type) | |
2614 | { | |
2615 | case GET_BUFFER_WINDOW: | |
d3d50620 | 2616 | if (EQ (w->buffer, obj) |
9397e56f MR |
2617 | /* Don't find any minibuffer window except the one that |
2618 | is currently in use. */ | |
2619 | && (MINI_WINDOW_P (w) ? EQ (window, minibuf_window) : 1)) | |
118ea242 | 2620 | { |
9397e56f MR |
2621 | if (EQ (window, selected_window)) |
2622 | /* Preferably return the selected window. */ | |
ca2d5566 | 2623 | RETURN_UNGCPRO (window); |
d3d50620 | 2624 | else if (EQ (XWINDOW (window)->frame, selected_frame) |
9397e56f MR |
2625 | && !frame_best_window_flag) |
2626 | /* Prefer windows on the current frame (but don't | |
2627 | choose another one if we have one already). */ | |
118ea242 | 2628 | { |
9397e56f MR |
2629 | best_window = window; |
2630 | frame_best_window_flag = 1; | |
7ab12479 | 2631 | } |
9397e56f MR |
2632 | else if (NILP (best_window)) |
2633 | best_window = window; | |
7ab12479 JB |
2634 | } |
2635 | break; | |
2636 | ||
9397e56f MR |
2637 | case REPLACE_BUFFER_IN_WINDOWS_SAFELY: |
2638 | /* We could simply check whether the buffer shown by window | |
2639 | is live, and show another buffer in case it isn't. */ | |
d3d50620 | 2640 | if (EQ (w->buffer, obj)) |
7ab12479 | 2641 | { |
9397e56f | 2642 | /* Undedicate WINDOW. */ |
e8c17b81 | 2643 | wset_dedicated (w, Qnil); |
9397e56f MR |
2644 | /* Make WINDOW show the buffer returned by |
2645 | other_buffer_safely, don't run any hooks. */ | |
2646 | set_window_buffer | |
d3d50620 | 2647 | (window, other_buffer_safely (w->buffer), 0, 0); |
9397e56f MR |
2648 | /* If WINDOW is the selected window, make its buffer |
2649 | current. But do so only if the window shows the | |
2650 | current buffer (Bug#6454). */ | |
2651 | if (EQ (window, selected_window) | |
d3d50620 DA |
2652 | && XBUFFER (w->buffer) == current_buffer) |
2653 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2654 | } |
2655 | break; | |
3f8ab7bd | 2656 | |
6b61353c | 2657 | case REDISPLAY_BUFFER_WINDOWS: |
d3d50620 | 2658 | if (EQ (w->buffer, obj)) |
6b61353c KH |
2659 | { |
2660 | mark_window_display_accurate (window, 0); | |
c98ff5dd | 2661 | w->update_mode_line = 1; |
6b61353c KH |
2662 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; |
2663 | ++update_mode_lines; | |
2664 | best_window = window; | |
2665 | } | |
2666 | break; | |
2667 | ||
3f8ab7bd RS |
2668 | /* Check for a window that has a killed buffer. */ |
2669 | case CHECK_ALL_WINDOWS: | |
d3d50620 | 2670 | if (! NILP (w->buffer) |
e578f381 | 2671 | && !BUFFER_LIVE_P (XBUFFER (w->buffer))) |
1088b922 | 2672 | emacs_abort (); |
118ea242 | 2673 | break; |
6bbd7a29 GM |
2674 | |
2675 | case WINDOW_LOOP_UNUSED: | |
2676 | break; | |
7ab12479 | 2677 | } |
7ab12479 | 2678 | } |
7ab12479 | 2679 | |
118ea242 | 2680 | UNGCPRO; |
7ab12479 | 2681 | return best_window; |
37962e60 | 2682 | } |
605be8af | 2683 | |
3f8ab7bd RS |
2684 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2685 | ||
e3b27b31 | 2686 | extern void check_all_windows (void) EXTERNALLY_VISIBLE; |
233a4a2c | 2687 | void |
971de7fb | 2688 | check_all_windows (void) |
3f8ab7bd RS |
2689 | { |
2690 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2691 | } | |
2692 | ||
a7ca3326 | 2693 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 0, 2, 0, |
fec89261 | 2694 | doc: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none. |
496e208e MR |
2695 | BUFFER-OR-NAME may be a buffer or a buffer name and defaults to |
2696 | the current buffer. | |
2697 | ||
2698 | The optional argument ALL-FRAMES specifies the frames to consider: | |
2699 | ||
2700 | - t means consider all windows on all existing frames. | |
2701 | ||
2702 | - `visible' means consider all windows on all visible frames. | |
2703 | ||
2704 | - 0 (the number zero) means consider all windows on all visible | |
2705 | and iconified frames. | |
2706 | ||
2707 | - A frame means consider all windows on that frame only. | |
2708 | ||
2709 | Any other value of ALL-FRAMES means consider all windows on the | |
2710 | selected frame and no others. */) | |
2711 | (Lisp_Object buffer_or_name, Lisp_Object all_frames) | |
7ab12479 | 2712 | { |
fec89261 MR |
2713 | Lisp_Object buffer; |
2714 | ||
2715 | if (NILP (buffer_or_name)) | |
2716 | buffer = Fcurrent_buffer (); | |
2717 | else | |
2718 | buffer = Fget_buffer (buffer_or_name); | |
2719 | ||
017b2bad | 2720 | if (BUFFERP (buffer)) |
496e208e | 2721 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, all_frames); |
7ab12479 JB |
2722 | else |
2723 | return Qnil; | |
2724 | } | |
2725 | ||
4b66faf3 | 2726 | static Lisp_Object |
1a13852e MR |
2727 | resize_root_window (Lisp_Object window, Lisp_Object delta, Lisp_Object horizontal, Lisp_Object ignore) |
2728 | { | |
5386012d | 2729 | return call4 (Qwindow_resize_root_window, window, delta, horizontal, ignore); |
1a13852e MR |
2730 | } |
2731 | ||
2732 | ||
2733 | DEFUN ("delete-other-windows-internal", Fdelete_other_windows_internal, | |
2734 | Sdelete_other_windows_internal, 0, 2, "", | |
2735 | doc: /* Make WINDOW fill its frame. | |
52162052 MR |
2736 | Only the frame WINDOW is on is affected. WINDOW must be a valid window |
2737 | and defaults to the selected one. | |
1a13852e | 2738 | |
be7f5545 MR |
2739 | Optional argument ROOT, if non-nil, must specify an internal window such |
2740 | that WINDOW is in its window subtree. If this is the case, replace ROOT | |
2741 | by WINDOW and leave alone any windows not part of ROOT's subtree. | |
1a13852e MR |
2742 | |
2743 | When WINDOW is live try to reduce display jumps by keeping the text | |
2744 | previously visible in WINDOW in the same place on the frame. Doing this | |
2745 | depends on the value of (window-start WINDOW), so if calling this | |
2746 | function in a program gives strange scrolling, make sure the | |
2747 | window-start value is reasonable when this function is called. */) | |
2748 | (Lisp_Object window, Lisp_Object root) | |
2749 | { | |
2750 | struct window *w, *r, *s; | |
2751 | struct frame *f; | |
46a4ce9e | 2752 | Lisp_Object sibling, pwindow, swindow IF_LINT (= Qnil), delta; |
d311d28c | 2753 | ptrdiff_t startpos IF_LINT (= 0); |
46a4ce9e | 2754 | int top IF_LINT (= 0), new_top, resize_failed; |
1a13852e | 2755 | |
52162052 | 2756 | w = decode_valid_window (window); |
1a13852e | 2757 | XSETWINDOW (window, w); |
d3d50620 | 2758 | f = XFRAME (w->frame); |
1a13852e MR |
2759 | |
2760 | if (NILP (root)) | |
2761 | /* ROOT is the frame's root window. */ | |
2762 | { | |
2763 | root = FRAME_ROOT_WINDOW (f); | |
2764 | r = XWINDOW (root); | |
2765 | } | |
2766 | else | |
2767 | /* ROOT must be an ancestor of WINDOW. */ | |
2768 | { | |
52162052 | 2769 | r = decode_valid_window (root); |
d3d50620 | 2770 | pwindow = XWINDOW (window)->parent; |
1a13852e MR |
2771 | while (!NILP (pwindow)) |
2772 | if (EQ (pwindow, root)) | |
2773 | break; | |
2774 | else | |
d3d50620 | 2775 | pwindow = XWINDOW (pwindow)->parent; |
1a13852e MR |
2776 | if (!EQ (pwindow, root)) |
2777 | error ("Specified root is not an ancestor of specified window"); | |
2778 | } | |
2779 | ||
2780 | if (EQ (window, root)) | |
2781 | /* A noop. */ | |
2782 | return Qnil; | |
2783 | /* I don't understand the "top > 0" part below. If we deal with a | |
2784 | standalone minibuffer it would have been caught by the preceding | |
2785 | test. */ | |
2786 | else if (MINI_WINDOW_P (w)) /* && top > 0) */ | |
2787 | error ("Can't expand minibuffer to full frame"); | |
2788 | ||
d3d50620 | 2789 | if (!NILP (w->buffer)) |
1a13852e | 2790 | { |
d3d50620 | 2791 | startpos = marker_position (w->start); |
1a13852e MR |
2792 | top = WINDOW_TOP_EDGE_LINE (w) |
2793 | - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2794 | /* Make sure WINDOW is the frame's selected window. */ | |
2795 | if (!EQ (window, FRAME_SELECTED_WINDOW (f))) | |
2796 | { | |
d3d50620 | 2797 | if (EQ (selected_frame, w->frame)) |
1a13852e MR |
2798 | Fselect_window (window, Qnil); |
2799 | else | |
f00af5b1 | 2800 | fset_selected_window (f, window); |
1a13852e MR |
2801 | } |
2802 | } | |
2803 | else | |
2804 | { | |
be7f5545 MR |
2805 | /* See if the frame's selected window is a part of the window |
2806 | subtree rooted at WINDOW, by finding all the selected window's | |
2807 | parents and comparing each one with WINDOW. If it isn't we | |
2808 | need a new selected window for this frame. */ | |
1a13852e MR |
2809 | swindow = FRAME_SELECTED_WINDOW (f); |
2810 | while (1) | |
2811 | { | |
2812 | pwindow = swindow; | |
2813 | while (!NILP (pwindow) && !EQ (window, pwindow)) | |
d3d50620 | 2814 | pwindow = XWINDOW (pwindow)->parent; |
1a13852e MR |
2815 | |
2816 | if (EQ (window, pwindow)) | |
2817 | /* If WINDOW is an ancestor of SWINDOW, then SWINDOW is ok | |
2818 | as the new selected window. */ | |
2819 | break; | |
2820 | else | |
2821 | /* Else try the previous window of SWINDOW. */ | |
2822 | swindow = Fprevious_window (swindow, Qlambda, Qnil); | |
2823 | } | |
2824 | ||
2825 | if (!EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
2826 | { | |
d3d50620 | 2827 | if (EQ (selected_frame, w->frame)) |
1a13852e MR |
2828 | Fselect_window (swindow, Qnil); |
2829 | else | |
f00af5b1 | 2830 | fset_selected_window (f, swindow); |
1a13852e MR |
2831 | } |
2832 | } | |
2833 | ||
2834 | BLOCK_INPUT; | |
4c5501e9 EZ |
2835 | if (!FRAME_INITIAL_P (f)) |
2836 | { | |
2837 | Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f); | |
2838 | ||
2839 | /* We are going to free the glyph matrices of WINDOW, and with | |
2840 | that we might lose any information about glyph rows that have | |
2841 | some of their glyphs highlighted in mouse face. (These rows | |
2842 | are marked with a non-zero mouse_face_p flag.) If WINDOW | |
2843 | indeed has some glyphs highlighted in mouse face, signal to | |
2844 | frame's up-to-date hook that mouse highlight was overwritten, | |
2845 | so that it will arrange for redisplaying the highlight. */ | |
2846 | if (EQ (hlinfo->mouse_face_window, window)) | |
2847 | { | |
2848 | hlinfo->mouse_face_beg_row = hlinfo->mouse_face_beg_col = -1; | |
2849 | hlinfo->mouse_face_end_row = hlinfo->mouse_face_end_col = -1; | |
2850 | hlinfo->mouse_face_window = Qnil; | |
2851 | } | |
a6b1c7cc | 2852 | } |
1a13852e MR |
2853 | free_window_matrices (r); |
2854 | ||
2855 | windows_or_buffers_changed++; | |
2856 | Vwindow_list = Qnil; | |
2857 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
46a4ce9e | 2858 | resize_failed = 0; |
1a13852e | 2859 | |
d3d50620 | 2860 | if (NILP (w->buffer)) |
1a13852e | 2861 | { |
be7f5545 | 2862 | /* Resize child windows vertically. */ |
d3d50620 DA |
2863 | XSETINT (delta, XINT (r->total_lines) |
2864 | - XINT (w->total_lines)); | |
e8c17b81 | 2865 | wset_top_line (w, r->top_line); |
1a13852e | 2866 | resize_root_window (window, delta, Qnil, Qnil); |
d615d6d2 MR |
2867 | if (window_resize_check (w, 0)) |
2868 | window_resize_apply (w, 0); | |
1a13852e MR |
2869 | else |
2870 | { | |
2871 | resize_root_window (window, delta, Qnil, Qt); | |
d615d6d2 MR |
2872 | if (window_resize_check (w, 0)) |
2873 | window_resize_apply (w, 0); | |
1a13852e MR |
2874 | else |
2875 | resize_failed = 1; | |
2876 | } | |
2877 | ||
be7f5545 | 2878 | /* Resize child windows horizontally. */ |
1a13852e MR |
2879 | if (!resize_failed) |
2880 | { | |
e8c17b81 | 2881 | wset_left_col (w, r->left_col); |
f00af5b1 PE |
2882 | XSETINT (delta, |
2883 | XINT (r->total_cols) - XINT (w->total_cols)); | |
e8c17b81 | 2884 | wset_left_col (w, r->left_col); |
1a13852e | 2885 | resize_root_window (window, delta, Qt, Qnil); |
d615d6d2 MR |
2886 | if (window_resize_check (w, 1)) |
2887 | window_resize_apply (w, 1); | |
1a13852e MR |
2888 | else |
2889 | { | |
2890 | resize_root_window (window, delta, Qt, Qt); | |
d615d6d2 MR |
2891 | if (window_resize_check (w, 1)) |
2892 | window_resize_apply (w, 1); | |
1a13852e MR |
2893 | else |
2894 | resize_failed = 1; | |
2895 | } | |
2896 | } | |
2897 | ||
2898 | if (resize_failed) | |
2899 | /* Play safe, if we still can ... */ | |
2900 | { | |
2901 | window = swindow; | |
2902 | w = XWINDOW (window); | |
2903 | } | |
2904 | } | |
2905 | ||
2906 | /* Cleanly unlink WINDOW from window-tree. */ | |
d3d50620 | 2907 | if (!NILP (w->prev)) |
1a13852e MR |
2908 | /* Get SIBLING above (on the left of) WINDOW. */ |
2909 | { | |
d3d50620 | 2910 | sibling = w->prev; |
1a13852e | 2911 | s = XWINDOW (sibling); |
e8c17b81 | 2912 | wset_next (s, w->next); |
d3d50620 | 2913 | if (!NILP (s->next)) |
e8c17b81 | 2914 | wset_prev (XWINDOW (s->next), sibling); |
1a13852e MR |
2915 | } |
2916 | else | |
2917 | /* Get SIBLING below (on the right of) WINDOW. */ | |
2918 | { | |
d3d50620 | 2919 | sibling = w->next; |
1a13852e | 2920 | s = XWINDOW (sibling); |
e8c17b81 | 2921 | wset_prev (s, Qnil); |
d3d50620 | 2922 | if (!NILP (XWINDOW (w->parent)->vchild)) |
e8c17b81 | 2923 | wset_vchild (XWINDOW (w->parent), sibling); |
1a13852e | 2924 | else |
e8c17b81 | 2925 | wset_hchild (XWINDOW (w->parent), sibling); |
1a13852e MR |
2926 | } |
2927 | ||
be7f5545 | 2928 | /* Delete ROOT and all child windows of ROOT. */ |
d3d50620 | 2929 | if (!NILP (r->vchild)) |
1a13852e | 2930 | { |
d3d50620 | 2931 | delete_all_child_windows (r->vchild); |
e8c17b81 | 2932 | wset_vchild (r, Qnil); |
1a13852e | 2933 | } |
d3d50620 | 2934 | else if (!NILP (r->hchild)) |
1a13852e | 2935 | { |
d3d50620 | 2936 | delete_all_child_windows (r->hchild); |
e8c17b81 | 2937 | wset_hchild (r, Qnil); |
1a13852e MR |
2938 | } |
2939 | ||
2940 | replace_window (root, window, 1); | |
2941 | ||
1a13852e | 2942 | /* This must become SWINDOW anyway ....... */ |
d3d50620 | 2943 | if (!NILP (w->buffer) && !resize_failed) |
1a13852e MR |
2944 | { |
2945 | /* Try to minimize scrolling, by setting the window start to the | |
2946 | point will cause the text at the old window start to be at the | |
2947 | same place on the frame. But don't try to do this if the | |
2948 | window start is outside the visible portion (as might happen | |
2949 | when the display is not current, due to typeahead). */ | |
2950 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2951 | if (new_top != top | |
d3d50620 DA |
2952 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) |
2953 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) | |
1a13852e MR |
2954 | { |
2955 | struct position pos; | |
2956 | struct buffer *obuf = current_buffer; | |
2957 | ||
d3d50620 | 2958 | Fset_buffer (w->buffer); |
1a13852e MR |
2959 | /* This computation used to temporarily move point, but that |
2960 | can have unwanted side effects due to text properties. */ | |
2961 | pos = *vmotion (startpos, -top, w); | |
2962 | ||
d3d50620 | 2963 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
e8c17b81 | 2964 | wset_window_end_valid (w, Qnil); |
c98ff5dd DA |
2965 | w->start_at_line_beg = (pos.bytepos == BEGV_BYTE |
2966 | || FETCH_BYTE (pos.bytepos - 1) == '\n'); | |
1a13852e MR |
2967 | /* We need to do this, so that the window-scroll-functions |
2968 | get called. */ | |
c98ff5dd | 2969 | w->optional_new_start = 1; |
1a13852e MR |
2970 | |
2971 | set_buffer_internal (obuf); | |
2972 | } | |
2973 | } | |
2974 | ||
2975 | adjust_glyphs (f); | |
2976 | UNBLOCK_INPUT; | |
2977 | ||
2978 | run_window_configuration_change_hook (f); | |
2979 | ||
2980 | return Qnil; | |
2981 | } | |
2982 | ||
2983 | ||
9397e56f MR |
2984 | void |
2985 | replace_buffer_in_windows (Lisp_Object buffer) | |
7ab12479 | 2986 | { |
9397e56f | 2987 | call1 (Qreplace_buffer_in_windows, buffer); |
7ab12479 JB |
2988 | } |
2989 | ||
ff58478b | 2990 | |
9397e56f MR |
2991 | /* Safely replace BUFFER with some other buffer in all windows of all |
2992 | frames, even those on other keyboards. */ | |
ff58478b RS |
2993 | |
2994 | void | |
9397e56f | 2995 | replace_buffer_in_windows_safely (Lisp_Object buffer) |
ff58478b RS |
2996 | { |
2997 | Lisp_Object tail, frame; | |
2998 | ||
9397e56f MR |
2999 | /* A single call to window_loop won't do the job because it only |
3000 | considers frames on the current keyboard. So loop manually over | |
3001 | frames, and handle each one. */ | |
ff58478b | 3002 | FOR_EACH_FRAME (tail, frame) |
9397e56f | 3003 | window_loop (REPLACE_BUFFER_IN_WINDOWS_SAFELY, buffer, 1, frame); |
ff58478b | 3004 | } |
7ab12479 | 3005 | \f |
a481b3ea JB |
3006 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the |
3007 | minimum allowable size. */ | |
5500c422 | 3008 | |
605be8af | 3009 | void |
971de7fb | 3010 | check_frame_size (FRAME_PTR frame, int *rows, int *cols) |
a481b3ea | 3011 | { |
628df3bf | 3012 | /* For height, we have to see: |
54b8bcb5 RS |
3013 | how many windows the frame has at minimum (one or two), |
3014 | and whether it has a menu bar or other special stuff at the top. */ | |
3015 | int min_height | |
3016 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
3017 | ? MIN_SAFE_WINDOW_HEIGHT | |
3018 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 3019 | |
5500c422 GM |
3020 | if (FRAME_TOP_MARGIN (frame) > 0) |
3021 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
3022 | |
3023 | if (*rows < min_height) | |
3024 | *rows = min_height; | |
3025 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
3026 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
3027 | } | |
3028 | ||
79fd290e | 3029 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
3030 | Return 1 if window width is ok after adjustment; 0 if window |
3031 | is still too narrow. */ | |
3032 | ||
3033 | static int | |
971de7fb | 3034 | adjust_window_margins (struct window *w) |
949cf20f KS |
3035 | { |
3036 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
3037 | - WINDOW_FRINGE_COLS (w) | |
3038 | - WINDOW_SCROLL_BAR_COLS (w)); | |
3039 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
3040 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
3041 | ||
3042 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
3043 | return 1; | |
3044 | ||
3045 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
3046 | return 0; | |
3047 | ||
3048 | /* Window's text area is too narrow, but reducing the window | |
3049 | margins will fix that. */ | |
3050 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
3051 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
3052 | { | |
3053 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
077288cf | 3054 | { |
e8c17b81 PE |
3055 | wset_left_margin_cols (w, make_number (margin_cols / 2)); |
3056 | wset_right_margin_cols (w, make_number (margin_cols / 2)); | |
077288cf | 3057 | } |
949cf20f | 3058 | else |
e8c17b81 | 3059 | wset_right_margin_cols (w, make_number (margin_cols)); |
949cf20f KS |
3060 | } |
3061 | else | |
e8c17b81 | 3062 | wset_left_margin_cols (w, make_number (margin_cols)); |
949cf20f KS |
3063 | return 1; |
3064 | } | |
562dd5e9 | 3065 | \f |
9397e56f MR |
3066 | /* The following three routines are needed for running a window's |
3067 | configuration change hook. */ | |
562dd5e9 MR |
3068 | static void |
3069 | run_funs (Lisp_Object funs) | |
3070 | { | |
3071 | for (; CONSP (funs); funs = XCDR (funs)) | |
3072 | if (!EQ (XCAR (funs), Qt)) | |
3073 | call0 (XCAR (funs)); | |
3074 | } | |
6b61353c | 3075 | |
9397e56f MR |
3076 | static Lisp_Object |
3077 | select_window_norecord (Lisp_Object window) | |
3078 | { | |
3079 | return WINDOW_LIVE_P (window) | |
3080 | ? Fselect_window (window, Qt) : selected_window; | |
3081 | } | |
3082 | ||
3083 | static Lisp_Object | |
3084 | select_frame_norecord (Lisp_Object frame) | |
3085 | { | |
3086 | return FRAME_LIVE_P (XFRAME (frame)) | |
3087 | ? Fselect_frame (frame, Qt) : selected_frame; | |
3088 | } | |
6b61353c | 3089 | |
562dd5e9 MR |
3090 | void |
3091 | run_window_configuration_change_hook (struct frame *f) | |
3092 | { | |
d311d28c | 3093 | ptrdiff_t count = SPECPDL_INDEX (); |
562dd5e9 MR |
3094 | Lisp_Object frame, global_wcch |
3095 | = Fdefault_value (Qwindow_configuration_change_hook); | |
3096 | XSETFRAME (frame, f); | |
6b61353c | 3097 | |
d1f55f16 | 3098 | if (NILP (Vrun_hooks) || !NILP (inhibit_lisp_code)) |
562dd5e9 | 3099 | return; |
6b61353c | 3100 | |
562dd5e9 MR |
3101 | /* Use the right buffer. Matters when running the local hooks. */ |
3102 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
6b61353c | 3103 | { |
66322887 | 3104 | record_unwind_current_buffer (); |
562dd5e9 MR |
3105 | Fset_buffer (Fwindow_buffer (Qnil)); |
3106 | } | |
6a44ffb3 | 3107 | |
1a13852e MR |
3108 | if (SELECTED_FRAME () != f) |
3109 | { | |
3110 | record_unwind_protect (select_frame_norecord, Fselected_frame ()); | |
3111 | select_frame_norecord (frame); | |
3112 | } | |
3113 | ||
6a44ffb3 SM |
3114 | /* Look for buffer-local values. */ |
3115 | { | |
3116 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
3117 | for (; CONSP (windows); windows = XCDR (windows)) | |
3118 | { | |
3119 | Lisp_Object window = XCAR (windows); | |
3120 | Lisp_Object buffer = Fwindow_buffer (window); | |
3121 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
3122 | buffer))) | |
3123 | { | |
d311d28c | 3124 | ptrdiff_t inner_count = SPECPDL_INDEX (); |
6a44ffb3 SM |
3125 | record_unwind_protect (select_window_norecord, Fselected_window ()); |
3126 | select_window_norecord (window); | |
3127 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
3128 | buffer)); | |
46a4ce9e | 3129 | unbind_to (inner_count, Qnil); |
fec89261 | 3130 | } |
6a44ffb3 SM |
3131 | } |
3132 | } | |
047aaeb9 | 3133 | |
6a44ffb3 SM |
3134 | run_funs (global_wcch); |
3135 | unbind_to (count, Qnil); | |
ef264c42 SM |
3136 | } |
3137 | ||
1a13852e MR |
3138 | DEFUN ("run-window-configuration-change-hook", Frun_window_configuration_change_hook, |
3139 | Srun_window_configuration_change_hook, 1, 1, 0, | |
3140 | doc: /* Run `window-configuration-change-hook' for FRAME. */) | |
c4b6914d | 3141 | (Lisp_Object frame) |
1a13852e MR |
3142 | { |
3143 | CHECK_LIVE_FRAME (frame); | |
3144 | run_window_configuration_change_hook (XFRAME (frame)); | |
3145 | return Qnil; | |
3146 | } | |
3147 | ||
5500c422 GM |
3148 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3149 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3150 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3151 | margins, fringes, and scroll-bar settings of the window are not | |
3152 | reset from the buffer's local settings. */ | |
7ab12479 | 3153 | |
5500c422 | 3154 | void |
971de7fb | 3155 | set_window_buffer (Lisp_Object window, Lisp_Object buffer, int run_hooks_p, int keep_margins_p) |
5500c422 GM |
3156 | { |
3157 | struct window *w = XWINDOW (window); | |
3158 | struct buffer *b = XBUFFER (buffer); | |
d311d28c | 3159 | ptrdiff_t count = SPECPDL_INDEX (); |
d3d50620 | 3160 | int samebuf = EQ (buffer, w->buffer); |
7ab12479 | 3161 | |
e8c17b81 | 3162 | wset_buffer (w, buffer); |
86e48436 RS |
3163 | |
3164 | if (EQ (window, selected_window)) | |
39eb03f1 | 3165 | bset_last_selected_window (b, window); |
beb4e312 | 3166 | |
c49a0495 KS |
3167 | /* Let redisplay errors through. */ |
3168 | b->display_error_modiff = 0; | |
3169 | ||
beb4e312 | 3170 | /* Update time stamps of buffer display. */ |
4b4deea2 | 3171 | if (INTEGERP (BVAR (b, display_count))) |
39eb03f1 PE |
3172 | bset_display_count (b, make_number (XINT (BVAR (b, display_count)) + 1)); |
3173 | bset_display_time (b, Fcurrent_time ()); | |
86e48436 | 3174 | |
e8c17b81 PE |
3175 | wset_window_end_pos (w, make_number (0)); |
3176 | wset_window_end_vpos (w, make_number (0)); | |
72af86bd | 3177 | memset (&w->last_cursor, 0, sizeof w->last_cursor); |
e8c17b81 | 3178 | wset_window_end_valid (w, Qnil); |
c3b232e4 | 3179 | if (!(keep_margins_p && samebuf)) |
23fe745a | 3180 | { /* If we're not actually changing the buffer, don't reset hscroll and |
c3b232e4 SM |
3181 | vscroll. This case happens for example when called from |
3182 | change_frame_size_1, where we use a dummy call to | |
3183 | Fset_window_buffer on the frame's selected window (and no other) | |
3184 | just in order to run window-configuration-change-hook. | |
3185 | Resetting hscroll and vscroll here is problematic for things like | |
3186 | image-mode and doc-view-mode since it resets the image's position | |
3187 | whenever we resize the frame. */ | |
80b00b08 | 3188 | w->hscroll = w->min_hscroll = 0; |
c3b232e4 | 3189 | w->vscroll = 0; |
d3d50620 DA |
3190 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
3191 | set_marker_restricted (w->start, | |
c3b232e4 SM |
3192 | make_number (b->last_window_start), |
3193 | buffer); | |
c98ff5dd DA |
3194 | w->start_at_line_beg = 0; |
3195 | w->force_start = 0; | |
80b00b08 DA |
3196 | w->last_modified = 0; |
3197 | w->last_overlay_modified = 0; | |
c3b232e4 SM |
3198 | } |
3199 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
3200 | I doubt it's worth the trouble. */ | |
7ab12479 | 3201 | windows_or_buffers_changed++; |
5b03d3c0 | 3202 | |
da39107c | 3203 | /* We must select BUFFER for running the window-scroll-functions. */ |
5b03d3c0 RS |
3204 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3205 | because that might itself be a local variable. */ | |
da39107c | 3206 | if (window_initialized) |
5b03d3c0 | 3207 | { |
66322887 | 3208 | record_unwind_current_buffer (); |
5b03d3c0 RS |
3209 | Fset_buffer (buffer); |
3210 | } | |
3211 | ||
d3d50620 | 3212 | XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type); |
a1562258 | 3213 | |
949cf20f KS |
3214 | if (!keep_margins_p) |
3215 | { | |
3216 | /* Set left and right marginal area width etc. from buffer. */ | |
3217 | ||
79fd290e | 3218 | /* This may call adjust_window_margins three times, so |
949cf20f | 3219 | temporarily disable window margins. */ |
d3d50620 DA |
3220 | Lisp_Object save_left = w->left_margin_cols; |
3221 | Lisp_Object save_right = w->right_margin_cols; | |
6b61353c | 3222 | |
e8c17b81 PE |
3223 | wset_left_margin_cols (w, Qnil); |
3224 | wset_right_margin_cols (w, Qnil); | |
949cf20f KS |
3225 | |
3226 | Fset_window_fringes (window, | |
4b4deea2 TT |
3227 | BVAR (b, left_fringe_width), BVAR (b, right_fringe_width), |
3228 | BVAR (b, fringes_outside_margins)); | |
949cf20f KS |
3229 | |
3230 | Fset_window_scroll_bars (window, | |
4b4deea2 TT |
3231 | BVAR (b, scroll_bar_width), |
3232 | BVAR (b, vertical_scroll_bar_type), Qnil); | |
949cf20f | 3233 | |
e8c17b81 PE |
3234 | wset_left_margin_cols (w, save_left); |
3235 | wset_right_margin_cols (w, save_right); | |
6b61353c | 3236 | |
949cf20f | 3237 | Fset_window_margins (window, |
4b4deea2 | 3238 | BVAR (b, left_margin_cols), BVAR (b, right_margin_cols)); |
949cf20f | 3239 | } |
7ab12479 | 3240 | |
5500c422 GM |
3241 | if (run_hooks_p) |
3242 | { | |
3243 | if (! NILP (Vwindow_scroll_functions)) | |
3244 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
d3d50620 | 3245 | Fmarker_position (w->start)); |
ef264c42 | 3246 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
5500c422 | 3247 | } |
543f5fb1 | 3248 | |
5b03d3c0 | 3249 | unbind_to (count, Qnil); |
5500c422 | 3250 | } |
5b03d3c0 | 3251 | |
a7ca3326 | 3252 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
d653c8cc | 3253 | doc: /* Make WINDOW display BUFFER-OR-NAME as its contents. |
52162052 | 3254 | WINDOW must be a live window and defaults to the selected one. |
9397e56f MR |
3255 | BUFFER-OR-NAME must be a buffer or the name of an existing buffer. |
3256 | ||
3257 | Optional third argument KEEP-MARGINS non-nil means that WINDOW's current | |
3258 | display margins, fringe widths, and scroll bar settings are preserved; | |
3259 | the default is to reset these from the local settings for BUFFER-OR-NAME | |
3260 | or the frame defaults. Return nil. | |
d653c8cc | 3261 | |
7bfac547 MR |
3262 | This function throws an error when WINDOW is strongly dedicated to its |
3263 | buffer (that is `window-dedicated-p' returns t for WINDOW) and does not | |
3264 | already display BUFFER-OR-NAME. | |
6cb4a892 | 3265 | |
8fef9de1 MR |
3266 | This function runs `window-scroll-functions' before running |
3267 | `window-configuration-change-hook'. */) | |
5842a27b | 3268 | (register Lisp_Object window, Lisp_Object buffer_or_name, Lisp_Object keep_margins) |
5500c422 | 3269 | { |
d653c8cc | 3270 | register Lisp_Object tem, buffer; |
52162052 | 3271 | register struct window *w = decode_live_window (window); |
5500c422 | 3272 | |
bed0c171 | 3273 | XSETWINDOW (window, w); |
d653c8cc | 3274 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 3275 | CHECK_BUFFER (buffer); |
e578f381 | 3276 | if (!BUFFER_LIVE_P (XBUFFER (buffer))) |
5500c422 GM |
3277 | error ("Attempt to display deleted buffer"); |
3278 | ||
d3d50620 | 3279 | tem = w->buffer; |
aac0c6e3 MR |
3280 | if (NILP (tem)) |
3281 | error ("Window is deleted"); | |
3282 | else if (!EQ (tem, Qt)) | |
d653c8cc | 3283 | /* w->buffer is t when the window is first being set up. */ |
5500c422 | 3284 | { |
9397e56f MR |
3285 | if (!EQ (tem, buffer)) |
3286 | { | |
d3d50620 | 3287 | if (EQ (w->dedicated, Qt)) |
9397e56f MR |
3288 | /* WINDOW is strongly dedicated to its buffer, signal an |
3289 | error. */ | |
3290 | error ("Window is dedicated to `%s'", SDATA (BVAR (XBUFFER (tem), name))); | |
3291 | else | |
3292 | /* WINDOW is weakly dedicated to its buffer, reset | |
e4769531 | 3293 | dedication. */ |
e8c17b81 | 3294 | wset_dedicated (w, Qnil); |
9397e56f MR |
3295 | |
3296 | call1 (Qrecord_window_buffer, window); | |
3297 | } | |
5500c422 GM |
3298 | |
3299 | unshow_buffer (w); | |
3300 | } | |
3301 | ||
949cf20f | 3302 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 | 3303 | |
9397e56f | 3304 | return Qnil; |
c6932ecd | 3305 | } |
b7354ddf | 3306 | \f |
7e5cf297 | 3307 | static Lisp_Object |
971de7fb | 3308 | display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, Lisp_Object override_frame) |
d07f802a | 3309 | { |
87478b52 | 3310 | return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); |
d07f802a RS |
3311 | } |
3312 | ||
6b61353c KH |
3313 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, |
3314 | 0, 1, 0, | |
5a1048a5 | 3315 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 3316 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3317 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c | 3318 | displaying that buffer. */) |
5842a27b | 3319 | (Lisp_Object object) |
6b61353c KH |
3320 | { |
3321 | if (NILP (object)) | |
3322 | { | |
3323 | windows_or_buffers_changed++; | |
3324 | update_mode_lines++; | |
3325 | return Qt; | |
3326 | } | |
3327 | ||
3328 | if (WINDOWP (object)) | |
3329 | { | |
3330 | struct window *w = XWINDOW (object); | |
3331 | mark_window_display_accurate (object, 0); | |
c98ff5dd | 3332 | w->update_mode_line = 1; |
d3d50620 DA |
3333 | if (BUFFERP (w->buffer)) |
3334 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
6b61353c KH |
3335 | ++update_mode_lines; |
3336 | return Qt; | |
3337 | } | |
0cc1039f | 3338 | |
6b61353c KH |
3339 | if (STRINGP (object)) |
3340 | object = Fget_buffer (object); | |
e578f381 | 3341 | if (BUFFERP (object) && BUFFER_LIVE_P (XBUFFER (object))) |
6b61353c KH |
3342 | { |
3343 | /* Walk all windows looking for buffer, and force update | |
3344 | of each of those windows. */ | |
3345 | ||
3346 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); | |
3347 | return NILP (object) ? Qnil : Qt; | |
3348 | } | |
3349 | ||
3350 | /* If nothing suitable was found, just return. | |
3351 | We could signal an error, but this feature will typically be used | |
3352 | asynchronously in timers or process sentinels, so we don't. */ | |
3353 | return Qnil; | |
3354 | } | |
3355 | ||
3356 | ||
7ab12479 | 3357 | void |
971de7fb | 3358 | temp_output_buffer_show (register Lisp_Object buf) |
7ab12479 JB |
3359 | { |
3360 | register struct buffer *old = current_buffer; | |
3361 | register Lisp_Object window; | |
3362 | register struct window *w; | |
3363 | ||
39eb03f1 | 3364 | bset_directory (XBUFFER (buf), BVAR (current_buffer, directory)); |
bccd3dd1 | 3365 | |
7ab12479 | 3366 | Fset_buffer (buf); |
c6367666 | 3367 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3368 | BEGV = BEG; |
3369 | ZV = Z; | |
3370 | SET_PT (BEG); | |
7ab12479 JB |
3371 | set_buffer_internal (old); |
3372 | ||
e67a1dea | 3373 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3374 | call1 (Vtemp_buffer_show_function, buf); |
3375 | else | |
3376 | { | |
4ee88440 | 3377 | window = display_buffer (buf, Qnil, Qnil); |
7ab12479 | 3378 | |
d3d50620 | 3379 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3380 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3381 | Vminibuf_scroll_window = window; |
3382 | w = XWINDOW (window); | |
80b00b08 DA |
3383 | w->hscroll = 0; |
3384 | w->min_hscroll = 0; | |
d3d50620 DA |
3385 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3386 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3387 | |
beb4e312 | 3388 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3389 | and its buffer current. */ |
dee091a3 | 3390 | { |
d311d28c | 3391 | ptrdiff_t count = SPECPDL_INDEX (); |
dee091a3 JD |
3392 | Lisp_Object prev_window, prev_buffer; |
3393 | prev_window = selected_window; | |
3394 | XSETBUFFER (prev_buffer, old); | |
3395 | ||
3396 | /* Select the window that was chosen, for running the hook. | |
3397 | Note: Both Fselect_window and select_window_norecord may | |
3398 | set-buffer to the buffer displayed in the window, | |
3399 | so we need to save the current buffer. --stef */ | |
3400 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3401 | record_unwind_protect (select_window_norecord, prev_window); | |
3402 | Fselect_window (window, Qt); | |
d3d50620 | 3403 | Fset_buffer (w->buffer); |
dee091a3 JD |
3404 | Frun_hooks (1, &Qtemp_buffer_show_hook); |
3405 | unbind_to (count, Qnil); | |
3406 | } | |
2cccc823 | 3407 | } |
7ab12479 | 3408 | } |
3e21b6a7 SM |
3409 | |
3410 | DEFUN ("internal-temp-output-buffer-show", | |
3411 | Ftemp_output_buffer_show, Stemp_output_buffer_show, | |
3412 | 1, 1, 0, | |
87e68db4 | 3413 | doc: /* Internal function for `with-output-to-temp-buffer'. */) |
3e21b6a7 SM |
3414 | (Lisp_Object buf) |
3415 | { | |
3416 | temp_output_buffer_show (buf); | |
3417 | return Qnil; | |
3418 | } | |
7ab12479 | 3419 | \f |
1a13852e MR |
3420 | /* Make new window, have it replace WINDOW in window-tree, and make |
3421 | WINDOW its only vertical child (HORFLAG 1 means make WINDOW its only | |
3422 | horizontal child). */ | |
3423 | static void | |
3424 | make_parent_window (Lisp_Object window, int horflag) | |
3425 | { | |
3426 | Lisp_Object parent; | |
3427 | register struct window *o, *p; | |
1a13852e MR |
3428 | |
3429 | o = XWINDOW (window); | |
3430 | p = allocate_window (); | |
aa754e6a | 3431 | memcpy ((char *) p + sizeof (struct vectorlike_header), |
62efea5e | 3432 | (char *) o + sizeof (struct vectorlike_header), |
663e2b3f | 3433 | word_size * VECSIZE (struct window)); |
1a13852e MR |
3434 | XSETWINDOW (parent, p); |
3435 | ||
45942c7d | 3436 | p->sequence_number = ++sequence_number; |
1a13852e MR |
3437 | |
3438 | replace_window (window, parent, 1); | |
3439 | ||
e8c17b81 PE |
3440 | wset_next (o, Qnil); |
3441 | wset_prev (o, Qnil); | |
3442 | wset_parent (o, parent); | |
1a13852e | 3443 | |
e8c17b81 PE |
3444 | wset_hchild (p, horflag ? window : Qnil); |
3445 | wset_vchild (p, horflag ? Qnil : window); | |
3446 | wset_start (p, Qnil); | |
3447 | wset_pointm (p, Qnil); | |
3448 | wset_buffer (p, Qnil); | |
3449 | wset_combination_limit (p, Qnil); | |
3450 | wset_window_parameters (p, Qnil); | |
1a13852e MR |
3451 | } |
3452 | ||
496e208e MR |
3453 | /* Make new window from scratch. */ |
3454 | Lisp_Object | |
3455 | make_window (void) | |
3456 | { | |
3457 | Lisp_Object window; | |
3458 | register struct window *w; | |
3459 | ||
3460 | w = allocate_window (); | |
62efea5e DA |
3461 | /* Initialize Lisp data. Note that allocate_window initializes all |
3462 | Lisp data to nil, so do it only for slots which should not be nil. */ | |
e8c17b81 PE |
3463 | wset_left_col (w, make_number (0)); |
3464 | wset_top_line (w, make_number (0)); | |
3465 | wset_total_lines (w, make_number (0)); | |
3466 | wset_total_cols (w, make_number (0)); | |
3467 | wset_normal_lines (w, make_float (1.0)); | |
3468 | wset_normal_cols (w, make_float (1.0)); | |
3469 | wset_new_total (w, make_number (0)); | |
3470 | wset_new_normal (w, make_number (0)); | |
3471 | wset_start (w, Fmake_marker ()); | |
3472 | wset_pointm (w, Fmake_marker ()); | |
3473 | wset_vertical_scroll_bar_type (w, Qt); | |
3474 | wset_window_end_pos (w, make_number (0)); | |
3475 | wset_window_end_vpos (w, make_number (0)); | |
62efea5e DA |
3476 | |
3477 | /* Initialize non-Lisp data. Note that allocate_window zeroes out all | |
3478 | non-Lisp data, so do it only for slots which should not be zero. */ | |
496e208e | 3479 | w->nrows_scale_factor = w->ncols_scale_factor = 1; |
496e208e MR |
3480 | w->phys_cursor_type = -1; |
3481 | w->phys_cursor_width = -1; | |
45942c7d | 3482 | w->sequence_number = ++sequence_number; |
62efea5e | 3483 | |
496e208e MR |
3484 | /* Reset window_list. */ |
3485 | Vwindow_list = Qnil; | |
3486 | /* Return window. */ | |
3487 | XSETWINDOW (window, w); | |
3488 | return window; | |
3489 | } | |
3490 | \f | |
3491 | DEFUN ("set-window-new-total", Fset_window_new_total, Sset_window_new_total, 2, 3, 0, | |
3492 | doc: /* Set new total size of WINDOW to SIZE. | |
52162052 | 3493 | WINDOW must be a valid window and defaults to the selected one. |
496e208e MR |
3494 | Return SIZE. |
3495 | ||
3496 | Optional argument ADD non-nil means add SIZE to the new total size of | |
3497 | WINDOW and return the sum. | |
3498 | ||
be7f5545 | 3499 | Note: This function does not operate on any child windows of WINDOW. */) |
496e208e MR |
3500 | (Lisp_Object window, Lisp_Object size, Lisp_Object add) |
3501 | { | |
52162052 | 3502 | struct window *w = decode_valid_window (window); |
496e208e MR |
3503 | |
3504 | CHECK_NUMBER (size); | |
3505 | if (NILP (add)) | |
e8c17b81 | 3506 | wset_new_total (w, size); |
496e208e | 3507 | else |
e8c17b81 | 3508 | wset_new_total (w, make_number (XINT (w->new_total) + XINT (size))); |
496e208e | 3509 | |
d3d50620 | 3510 | return w->new_total; |
496e208e MR |
3511 | } |
3512 | ||
3513 | DEFUN ("set-window-new-normal", Fset_window_new_normal, Sset_window_new_normal, 1, 2, 0, | |
3514 | doc: /* Set new normal size of WINDOW to SIZE. | |
52162052 | 3515 | WINDOW must be a valid window and defaults to the selected one. |
496e208e MR |
3516 | Return SIZE. |
3517 | ||
be7f5545 | 3518 | Note: This function does not operate on any child windows of WINDOW. */) |
496e208e MR |
3519 | (Lisp_Object window, Lisp_Object size) |
3520 | { | |
e8c17b81 PE |
3521 | wset_new_normal (decode_valid_window (window), size); |
3522 | return size; | |
7ab12479 JB |
3523 | } |
3524 | ||
1a13852e MR |
3525 | /* Return 1 if setting w->total_lines (w->total_cols if HORFLAG is |
3526 | non-zero) to w->new_total would result in correct heights (widths) | |
be7f5545 | 3527 | for window W and recursively all child windows of W. |
1a13852e MR |
3528 | |
3529 | Note: This function does not check any of `window-fixed-size-p', | |
3530 | `window-min-height' or `window-min-width'. It does check that window | |
3531 | sizes do not drop below one line (two columns). */ | |
4b66faf3 | 3532 | static int |
d615d6d2 | 3533 | window_resize_check (struct window *w, int horflag) |
1a13852e MR |
3534 | { |
3535 | struct window *c; | |
3536 | ||
d3d50620 | 3537 | if (!NILP (w->vchild)) |
1a13852e MR |
3538 | /* W is a vertical combination. */ |
3539 | { | |
d3d50620 | 3540 | c = XWINDOW (w->vchild); |
1a13852e | 3541 | if (horflag) |
be7f5545 | 3542 | /* All child windows of W must have the same width as W. */ |
1a13852e MR |
3543 | { |
3544 | while (c) | |
3545 | { | |
d3d50620 | 3546 | if ((XINT (c->new_total) != XINT (w->new_total)) |
d615d6d2 | 3547 | || !window_resize_check (c, horflag)) |
1a13852e | 3548 | return 0; |
d3d50620 | 3549 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3550 | } |
3551 | return 1; | |
3552 | } | |
3553 | else | |
be7f5545 MR |
3554 | /* The sum of the heights of the child windows of W must equal |
3555 | W's height. */ | |
1a13852e MR |
3556 | { |
3557 | int sum_of_sizes = 0; | |
3558 | while (c) | |
3559 | { | |
d615d6d2 | 3560 | if (!window_resize_check (c, horflag)) |
1a13852e | 3561 | return 0; |
d3d50620 DA |
3562 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); |
3563 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e | 3564 | } |
d3d50620 | 3565 | return (sum_of_sizes == XINT (w->new_total)); |
1a13852e MR |
3566 | } |
3567 | } | |
d3d50620 | 3568 | else if (!NILP (w->hchild)) |
1a13852e MR |
3569 | /* W is a horizontal combination. */ |
3570 | { | |
d3d50620 | 3571 | c = XWINDOW (w->hchild); |
1a13852e | 3572 | if (horflag) |
be7f5545 | 3573 | /* The sum of the widths of the child windows of W must equal W's |
1a13852e MR |
3574 | width. */ |
3575 | { | |
3576 | int sum_of_sizes = 0; | |
3577 | while (c) | |
3578 | { | |
d615d6d2 | 3579 | if (!window_resize_check (c, horflag)) |
1a13852e | 3580 | return 0; |
d3d50620 DA |
3581 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); |
3582 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e | 3583 | } |
d3d50620 | 3584 | return (sum_of_sizes == XINT (w->new_total)); |
1a13852e MR |
3585 | } |
3586 | else | |
be7f5545 | 3587 | /* All child windows of W must have the same height as W. */ |
1a13852e MR |
3588 | { |
3589 | while (c) | |
3590 | { | |
d3d50620 | 3591 | if ((XINT (c->new_total) != XINT (w->new_total)) |
d615d6d2 | 3592 | || !window_resize_check (c, horflag)) |
1a13852e | 3593 | return 0; |
d3d50620 | 3594 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3595 | } |
3596 | return 1; | |
3597 | } | |
3598 | } | |
3599 | else | |
3600 | /* A leaf window. Make sure it's not too small. The following | |
3601 | hardcodes the values of `window-safe-min-width' (2) and | |
3602 | `window-safe-min-height' (1) which are defined in window.el. */ | |
d3d50620 | 3603 | return XINT (w->new_total) >= (horflag ? 2 : 1); |
1a13852e MR |
3604 | } |
3605 | ||
3606 | /* Set w->total_lines (w->total_cols if HORIZONTAL is non-zero) to | |
be7f5545 MR |
3607 | w->new_total for window W and recursively all child windows of W. |
3608 | Also calculate and assign the new vertical (horizontal) start | |
3609 | positions of each of these windows. | |
1a13852e MR |
3610 | |
3611 | This function does not perform any error checks. Make sure you have | |
d615d6d2 | 3612 | run window_resize_check on W before applying this function. */ |
440a42e3 | 3613 | static void |
d615d6d2 | 3614 | window_resize_apply (struct window *w, int horflag) |
1a13852e | 3615 | { |
46a4ce9e | 3616 | struct window *c; |
1a13852e MR |
3617 | int pos; |
3618 | ||
3619 | /* Note: Assigning new_normal requires that the new total size of the | |
3620 | parent window has been set *before*. */ | |
3621 | if (horflag) | |
3622 | { | |
e8c17b81 | 3623 | wset_total_cols (w, w->new_total); |
d3d50620 | 3624 | if (NUMBERP (w->new_normal)) |
e8c17b81 | 3625 | wset_normal_cols (w, w->new_normal); |
1a13852e | 3626 | |
d3d50620 | 3627 | pos = XINT (w->left_col); |
1a13852e MR |
3628 | } |
3629 | else | |
3630 | { | |
e8c17b81 | 3631 | wset_total_lines (w, w->new_total); |
d3d50620 | 3632 | if (NUMBERP (w->new_normal)) |
e8c17b81 | 3633 | wset_normal_lines (w, w->new_normal); |
1a13852e | 3634 | |
d3d50620 | 3635 | pos = XINT (w->top_line); |
1a13852e MR |
3636 | } |
3637 | ||
d3d50620 | 3638 | if (!NILP (w->vchild)) |
1a13852e MR |
3639 | /* W is a vertical combination. */ |
3640 | { | |
d3d50620 | 3641 | c = XWINDOW (w->vchild); |
1a13852e MR |
3642 | while (c) |
3643 | { | |
3644 | if (horflag) | |
e8c17b81 | 3645 | wset_left_col (c, make_number (pos)); |
1a13852e | 3646 | else |
e8c17b81 | 3647 | wset_top_line (c, make_number (pos)); |
d615d6d2 | 3648 | window_resize_apply (c, horflag); |
1a13852e | 3649 | if (!horflag) |
d3d50620 DA |
3650 | pos = pos + XINT (c->total_lines); |
3651 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e MR |
3652 | } |
3653 | } | |
d3d50620 | 3654 | else if (!NILP (w->hchild)) |
1a13852e MR |
3655 | /* W is a horizontal combination. */ |
3656 | { | |
d3d50620 | 3657 | c = XWINDOW (w->hchild); |
1a13852e MR |
3658 | while (c) |
3659 | { | |
3660 | if (horflag) | |
e8c17b81 | 3661 | wset_left_col (c, make_number (pos)); |
1a13852e | 3662 | else |
e8c17b81 | 3663 | wset_top_line (c, make_number (pos)); |
d615d6d2 | 3664 | window_resize_apply (c, horflag); |
1a13852e | 3665 | if (horflag) |
d3d50620 DA |
3666 | pos = pos + XINT (c->total_cols); |
3667 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e MR |
3668 | } |
3669 | } | |
3670 | ||
3671 | /* Clear out some redisplay caches. */ | |
80b00b08 DA |
3672 | w->last_modified = 0; |
3673 | w->last_overlay_modified = 0; | |
1a13852e MR |
3674 | } |
3675 | ||
3676 | ||
d615d6d2 | 3677 | DEFUN ("window-resize-apply", Fwindow_resize_apply, Swindow_resize_apply, 1, 2, 0, |
1a13852e MR |
3678 | doc: /* Apply requested size values for window-tree of FRAME. |
3679 | Optional argument HORIZONTAL omitted or nil means apply requested height | |
3680 | values. HORIZONTAL non-nil means apply requested width values. | |
3681 | ||
3682 | This function checks whether the requested values sum up to a valid | |
be7f5545 MR |
3683 | window layout, recursively assigns the new sizes of all child windows |
3684 | and calculates and assigns the new start positions of these windows. | |
1a13852e MR |
3685 | |
3686 | Note: This function does not check any of `window-fixed-size-p', | |
3687 | `window-min-height' or `window-min-width'. All these checks have to | |
3688 | be applied on the Elisp level. */) | |
3689 | (Lisp_Object frame, Lisp_Object horizontal) | |
3690 | { | |
3691 | struct frame *f; | |
3692 | struct window *r; | |
3693 | int horflag = !NILP (horizontal); | |
3694 | ||
3695 | if (NILP (frame)) | |
3696 | frame = selected_frame; | |
3697 | CHECK_LIVE_FRAME (frame); | |
3698 | ||
3699 | f = XFRAME (frame); | |
3700 | r = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3701 | ||
d615d6d2 | 3702 | if (!window_resize_check (r, horflag) |
d3d50620 DA |
3703 | || ! EQ (r->new_total, |
3704 | (horflag ? r->total_cols : r->total_lines))) | |
1a13852e MR |
3705 | return Qnil; |
3706 | ||
3707 | BLOCK_INPUT; | |
d615d6d2 | 3708 | window_resize_apply (r, horflag); |
1a13852e MR |
3709 | |
3710 | windows_or_buffers_changed++; | |
3711 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3712 | ||
3713 | adjust_glyphs (f); | |
3714 | UNBLOCK_INPUT; | |
3715 | ||
3716 | run_window_configuration_change_hook (f); | |
3717 | ||
3718 | return Qt; | |
3719 | } | |
3720 | ||
3721 | ||
3722 | /* Resize frame F's windows when number of lines of F is set to SIZE. | |
3723 | HORFLAG 1 means resize windows when number of columns of F is set to | |
3724 | SIZE. | |
3725 | ||
3726 | This function can delete all windows but the selected one in order to | |
3727 | satisfy the request. The result will be meaningful if and only if | |
3728 | F's windows have meaningful sizes when you call this. */ | |
3729 | void | |
3730 | resize_frame_windows (struct frame *f, int size, int horflag) | |
3731 | { | |
e69b0960 | 3732 | Lisp_Object root = f->root_window; |
1a13852e | 3733 | struct window *r = XWINDOW (root); |
e69b0960 | 3734 | Lisp_Object mini = f->minibuffer_window; |
1a13852e MR |
3735 | struct window *m; |
3736 | /* new_size is the new size of the frame's root window. */ | |
3737 | int new_size = (horflag | |
3738 | ? size | |
3739 | : (size | |
3740 | - FRAME_TOP_MARGIN (f) | |
3741 | - ((FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3742 | ? 1 : 0))); | |
3743 | ||
e8c17b81 | 3744 | wset_top_line (r, make_number (FRAME_TOP_MARGIN (f))); |
d3d50620 | 3745 | if (NILP (r->vchild) && NILP (r->hchild)) |
1a13852e MR |
3746 | /* For a leaf root window just set the size. */ |
3747 | if (horflag) | |
e8c17b81 | 3748 | wset_total_cols (r, make_number (new_size)); |
1a13852e | 3749 | else |
e8c17b81 | 3750 | wset_total_lines (r, make_number (new_size)); |
1a13852e MR |
3751 | else |
3752 | { | |
3753 | /* old_size is the old size of the frame's root window. */ | |
f00af5b1 | 3754 | int old_size = XFASTINT (horflag ? r->total_cols |
d3d50620 | 3755 | : r->total_lines); |
1a13852e MR |
3756 | Lisp_Object delta; |
3757 | ||
3758 | XSETINT (delta, new_size - old_size); | |
3759 | /* Try a "normal" resize first. */ | |
3760 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qnil); | |
3a45383a | 3761 | if (window_resize_check (r, horflag) |
d3d50620 | 3762 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3763 | window_resize_apply (r, horflag); |
1a13852e MR |
3764 | else |
3765 | { | |
3766 | /* Try with "reasonable" minimum sizes next. */ | |
3767 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qt); | |
d615d6d2 | 3768 | if (window_resize_check (r, horflag) |
d3d50620 | 3769 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3770 | window_resize_apply (r, horflag); |
1a13852e MR |
3771 | else |
3772 | { | |
3773 | /* Finally, try with "safe" minimum sizes. */ | |
3774 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qsafe); | |
d615d6d2 | 3775 | if (window_resize_check (r, horflag) |
d3d50620 | 3776 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3777 | window_resize_apply (r, horflag); |
1a13852e MR |
3778 | else |
3779 | { | |
3780 | /* We lost. Delete all windows but the frame's | |
3781 | selected one. */ | |
e69b0960 | 3782 | root = f->selected_window; |
1a13852e MR |
3783 | Fdelete_other_windows_internal (root, Qnil); |
3784 | if (horflag) | |
e8c17b81 | 3785 | wset_total_cols (XWINDOW (root), make_number (new_size)); |
1a13852e | 3786 | else |
e8c17b81 | 3787 | wset_total_lines (XWINDOW (root), make_number (new_size)); |
1a13852e MR |
3788 | } |
3789 | } | |
3790 | } | |
3791 | } | |
3792 | ||
3793 | if (FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3794 | { | |
3795 | m = XWINDOW (mini); | |
3796 | if (horflag) | |
e8c17b81 | 3797 | wset_total_cols (m, make_number (size)); |
1a13852e MR |
3798 | else |
3799 | { | |
3800 | /* Are we sure we always want 1 line here? */ | |
e8c17b81 PE |
3801 | wset_total_lines (m, make_number (1)); |
3802 | wset_top_line | |
3803 | (m, make_number (XINT (r->top_line) + XINT (r->total_lines))); | |
1a13852e MR |
3804 | } |
3805 | } | |
3806 | } | |
3807 | ||
3808 | ||
3809 | DEFUN ("split-window-internal", Fsplit_window_internal, Ssplit_window_internal, 4, 4, 0, | |
3810 | doc: /* Split window OLD. | |
3811 | Second argument TOTAL-SIZE specifies the number of lines or columns of the | |
9397e56f | 3812 | new window. In any case TOTAL-SIZE must be a positive integer. |
1a13852e MR |
3813 | |
3814 | Third argument SIDE nil (or `below') specifies that the new window shall | |
3815 | be located below WINDOW. SIDE `above' means the new window shall be | |
3816 | located above WINDOW. In both cases TOTAL-SIZE specifies the number of | |
3817 | lines of the new window including space reserved for the mode and/or | |
3818 | header line. | |
3819 | ||
3820 | SIDE t (or `right') specifies that the new window shall be located on | |
3821 | the right side of WINDOW. SIDE `left' means the new window shall be | |
3822 | located on the left of WINDOW. In both cases TOTAL-SIZE specifies the | |
3823 | number of columns of the new window including space reserved for fringes | |
3824 | and the scrollbar or a divider column. | |
3825 | ||
3826 | Fourth argument NORMAL-SIZE specifies the normal size of the new window | |
3827 | according to the SIDE argument. | |
3828 | ||
3829 | The new total and normal sizes of all involved windows must have been | |
3830 | set correctly. See the code of `split-window' for how this is done. */) | |
3831 | (Lisp_Object old, Lisp_Object total_size, Lisp_Object side, Lisp_Object normal_size) | |
3832 | { | |
3833 | /* OLD (*o) is the window we have to split. (*p) is either OLD's | |
3834 | parent window or an internal window we have to install as OLD's new | |
3835 | parent. REFERENCE (*r) must denote a live window, or is set to OLD | |
3836 | provided OLD is a leaf window, or to the frame's selected window. | |
3837 | NEW (*n) is the new window created with some parameters taken from | |
3838 | REFERENCE (*r). */ | |
3839 | register Lisp_Object new, frame, reference; | |
3840 | register struct window *o, *p, *n, *r; | |
3841 | struct frame *f; | |
3842 | int horflag | |
3843 | /* HORFLAG is 1 when we split side-by-side, 0 otherwise. */ | |
3844 | = EQ (side, Qt) || EQ (side, Qleft) || EQ (side, Qright); | |
b6f67890 | 3845 | int combination_limit = 0; |
1a13852e MR |
3846 | |
3847 | CHECK_WINDOW (old); | |
3848 | o = XWINDOW (old); | |
3849 | frame = WINDOW_FRAME (o); | |
3850 | f = XFRAME (frame); | |
3851 | ||
3852 | CHECK_NUMBER (total_size); | |
3853 | ||
b6f67890 MR |
3854 | /* Set combination_limit to 1 if we have to make a new parent window. |
3855 | We do that if either `window-combination-limit' is t, or OLD has no | |
3856 | parent, or OLD is ortho-combined. */ | |
3857 | combination_limit = | |
3858 | !NILP (Vwindow_combination_limit) | |
d3d50620 | 3859 | || NILP (o->parent) |
1a13852e | 3860 | || NILP (horflag |
d3d50620 DA |
3861 | ? (XWINDOW (o->parent)->hchild) |
3862 | : (XWINDOW (o->parent)->vchild)); | |
1a13852e MR |
3863 | |
3864 | /* We need a live reference window to initialize some parameters. */ | |
3865 | if (WINDOW_LIVE_P (old)) | |
3866 | /* OLD is live, use it as reference window. */ | |
3867 | reference = old; | |
3868 | else | |
3869 | /* Use the frame's selected window as reference window. */ | |
3870 | reference = FRAME_SELECTED_WINDOW (f); | |
3871 | r = XWINDOW (reference); | |
3872 | ||
3873 | /* The following bugs are caught by `split-window'. */ | |
3874 | if (MINI_WINDOW_P (o)) | |
3875 | error ("Attempt to split minibuffer window"); | |
3876 | else if (XINT (total_size) < (horflag ? 2 : 1)) | |
3877 | error ("Size of new window too small (after split)"); | |
a0c2d0ae MR |
3878 | else if (!combination_limit && !NILP (Vwindow_combination_resize)) |
3879 | /* `window-combination-resize' non-nil means try to resize OLD's siblings | |
1a13852e MR |
3880 | proportionally. */ |
3881 | { | |
d3d50620 | 3882 | p = XWINDOW (o->parent); |
1a13852e | 3883 | /* Temporarily pretend we split the parent window. */ |
e8c17b81 PE |
3884 | wset_new_total |
3885 | (p, make_number (XINT (horflag ? p->total_cols : p->total_lines) | |
077288cf | 3886 | - XINT (total_size))); |
d615d6d2 | 3887 | if (!window_resize_check (p, horflag)) |
1a13852e MR |
3888 | error ("Window sizes don't fit"); |
3889 | else | |
3890 | /* Undo the temporary pretension. */ | |
e8c17b81 | 3891 | wset_new_total (p, horflag ? p->total_cols : p->total_lines); |
1a13852e MR |
3892 | } |
3893 | else | |
3894 | { | |
d615d6d2 | 3895 | if (!window_resize_check (o, horflag)) |
1a13852e | 3896 | error ("Resizing old window failed"); |
d3d50620 DA |
3897 | else if (XINT (total_size) + XINT (o->new_total) |
3898 | != XINT (horflag ? o->total_cols : o->total_lines)) | |
1a13852e MR |
3899 | error ("Sum of sizes of old and new window don't fit"); |
3900 | } | |
3901 | ||
3902 | /* This is our point of no return. */ | |
b6f67890 | 3903 | if (combination_limit) |
1a13852e MR |
3904 | { |
3905 | /* Save the old value of o->normal_cols/lines. It gets corrupted | |
3906 | by make_parent_window and we need it below for assigning it to | |
3907 | p->new_normal. */ | |
3a45383a | 3908 | Lisp_Object new_normal |
d3d50620 | 3909 | = horflag ? o->normal_cols : o->normal_lines; |
1a13852e MR |
3910 | |
3911 | make_parent_window (old, horflag); | |
d3d50620 | 3912 | p = XWINDOW (o->parent); |
b6f67890 MR |
3913 | /* Store value of `window-combination-limit' in new parent's |
3914 | combination_limit slot. */ | |
e8c17b81 | 3915 | wset_combination_limit (p, Vwindow_combination_limit); |
1a13852e | 3916 | /* These get applied below. */ |
e8c17b81 PE |
3917 | wset_new_total (p, horflag ? o->total_cols : o->total_lines); |
3918 | wset_new_normal (p, new_normal); | |
1a13852e MR |
3919 | } |
3920 | else | |
d3d50620 | 3921 | p = XWINDOW (o->parent); |
1a13852e MR |
3922 | |
3923 | windows_or_buffers_changed++; | |
3924 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3925 | new = make_window (); | |
3926 | n = XWINDOW (new); | |
e8c17b81 PE |
3927 | wset_frame (n, frame); |
3928 | wset_parent (n, o->parent); | |
3929 | wset_vchild (n, Qnil); | |
3930 | wset_hchild (n, Qnil); | |
1a13852e MR |
3931 | |
3932 | if (EQ (side, Qabove) || EQ (side, Qleft)) | |
3933 | { | |
e8c17b81 | 3934 | wset_prev (n, o->prev); |
d3d50620 | 3935 | if (NILP (n->prev)) |
1a13852e | 3936 | if (horflag) |
e8c17b81 | 3937 | wset_hchild (p, new); |
1a13852e | 3938 | else |
e8c17b81 | 3939 | wset_vchild (p, new); |
1a13852e | 3940 | else |
e8c17b81 PE |
3941 | wset_next (XWINDOW (n->prev), new); |
3942 | wset_next (n, old); | |
3943 | wset_prev (o, new); | |
1a13852e MR |
3944 | } |
3945 | else | |
3946 | { | |
e8c17b81 | 3947 | wset_next (n, o->next); |
d3d50620 | 3948 | if (!NILP (n->next)) |
e8c17b81 PE |
3949 | wset_prev (XWINDOW (n->next), new); |
3950 | wset_prev (n, old); | |
3951 | wset_next (o, new); | |
1a13852e MR |
3952 | } |
3953 | ||
e8c17b81 PE |
3954 | wset_buffer (n, Qt); |
3955 | wset_window_end_valid (n, Qnil); | |
1a13852e MR |
3956 | memset (&n->last_cursor, 0, sizeof n->last_cursor); |
3957 | ||
3958 | /* Get special geometry settings from reference window. */ | |
e8c17b81 PE |
3959 | wset_left_margin_cols (n, r->left_margin_cols); |
3960 | wset_right_margin_cols (n, r->right_margin_cols); | |
3961 | wset_left_fringe_width (n, r->left_fringe_width); | |
3962 | wset_right_fringe_width (n, r->right_fringe_width); | |
1a13852e | 3963 | n->fringes_outside_margins = r->fringes_outside_margins; |
e8c17b81 PE |
3964 | wset_scroll_bar_width (n, r->scroll_bar_width); |
3965 | wset_vertical_scroll_bar_type (n, r->vertical_scroll_bar_type); | |
1a13852e | 3966 | |
1a13852e MR |
3967 | /* Directly assign orthogonal coordinates and sizes. */ |
3968 | if (horflag) | |
3969 | { | |
e8c17b81 PE |
3970 | wset_top_line (n, o->top_line); |
3971 | wset_total_lines (n, o->total_lines); | |
1a13852e MR |
3972 | } |
3973 | else | |
3974 | { | |
e8c17b81 PE |
3975 | wset_left_col (n, o->left_col); |
3976 | wset_total_cols (n, o->total_cols); | |
1a13852e MR |
3977 | } |
3978 | ||
d615d6d2 | 3979 | /* Iso-coordinates and sizes are assigned by window_resize_apply, |
1a13852e | 3980 | get them ready here. */ |
e8c17b81 PE |
3981 | wset_new_total (n, total_size); |
3982 | wset_new_normal (n, normal_size); | |
1a13852e MR |
3983 | |
3984 | BLOCK_INPUT; | |
d615d6d2 | 3985 | window_resize_apply (p, horflag); |
1a13852e MR |
3986 | adjust_glyphs (f); |
3987 | /* Set buffer of NEW to buffer of reference window. Don't run | |
3988 | any hooks. */ | |
d3d50620 | 3989 | set_window_buffer (new, r->buffer, 0, 1); |
1a13852e MR |
3990 | UNBLOCK_INPUT; |
3991 | ||
3992 | /* Maybe we should run the scroll functions in Elisp (which already | |
3993 | runs the configuration change hook). */ | |
3994 | if (! NILP (Vwindow_scroll_functions)) | |
3995 | run_hook_with_args_2 (Qwindow_scroll_functions, new, | |
d3d50620 | 3996 | Fmarker_position (n->start)); |
1a13852e MR |
3997 | /* Return NEW. */ |
3998 | return new; | |
3999 | } | |
4000 | ||
4001 | ||
4002 | DEFUN ("delete-window-internal", Fdelete_window_internal, Sdelete_window_internal, 1, 1, 0, | |
4003 | doc: /* Remove WINDOW from its frame. | |
87e68db4 JB |
4004 | WINDOW defaults to the selected window. Return nil. |
4005 | Signal an error when WINDOW is the only window on its frame. */) | |
1a13852e MR |
4006 | (register Lisp_Object window) |
4007 | { | |
4008 | register Lisp_Object parent, sibling, frame, root; | |
4009 | struct window *w, *p, *s, *r; | |
4010 | struct frame *f; | |
4011 | int horflag; | |
4012 | int before_sibling = 0; | |
4013 | ||
4014 | w = decode_any_window (window); | |
4015 | XSETWINDOW (window, w); | |
d3d50620 DA |
4016 | if (NILP (w->buffer) |
4017 | && NILP (w->hchild) && NILP (w->vchild)) | |
1a13852e MR |
4018 | /* It's a no-op to delete an already deleted window. */ |
4019 | return Qnil; | |
4020 | ||
d3d50620 | 4021 | parent = w->parent; |
1a13852e MR |
4022 | if (NILP (parent)) |
4023 | /* Never delete a minibuffer or frame root window. */ | |
4024 | error ("Attempt to delete minibuffer or sole ordinary window"); | |
d3d50620 | 4025 | else if (NILP (w->prev) && NILP (w->next)) |
1a13852e MR |
4026 | /* Rather bow out here, this case should be handled on the Elisp |
4027 | level. */ | |
4028 | error ("Attempt to delete sole window of parent"); | |
4029 | ||
4030 | p = XWINDOW (parent); | |
d3d50620 | 4031 | horflag = NILP (p->vchild); |
1a13852e MR |
4032 | |
4033 | frame = WINDOW_FRAME (w); | |
4034 | f = XFRAME (frame); | |
4035 | ||
4036 | root = FRAME_ROOT_WINDOW (f); | |
4037 | r = XWINDOW (root); | |
4038 | ||
4039 | /* Unlink WINDOW from window tree. */ | |
d3d50620 | 4040 | if (NILP (w->prev)) |
1a13852e MR |
4041 | /* Get SIBLING below (on the right of) WINDOW. */ |
4042 | { | |
4043 | /* before_sibling 1 means WINDOW is the first child of its | |
4044 | parent and thus before the sibling. */ | |
4045 | before_sibling = 1; | |
d3d50620 | 4046 | sibling = w->next; |
1a13852e | 4047 | s = XWINDOW (sibling); |
e8c17b81 | 4048 | wset_prev (s, Qnil); |
1a13852e | 4049 | if (horflag) |
e8c17b81 | 4050 | wset_hchild (p, sibling); |
1a13852e | 4051 | else |
e8c17b81 | 4052 | wset_vchild (p, sibling); |
1a13852e MR |
4053 | } |
4054 | else | |
4055 | /* Get SIBLING above (on the left of) WINDOW. */ | |
4056 | { | |
d3d50620 | 4057 | sibling = w->prev; |
1a13852e | 4058 | s = XWINDOW (sibling); |
e8c17b81 | 4059 | wset_next (s, w->next); |
d3d50620 | 4060 | if (!NILP (s->next)) |
e8c17b81 | 4061 | wset_prev (XWINDOW (s->next), sibling); |
7ab12479 JB |
4062 | } |
4063 | ||
d615d6d2 | 4064 | if (window_resize_check (r, horflag) |
d3d50620 DA |
4065 | && EQ (r->new_total, |
4066 | (horflag ? r->total_cols : r->total_lines))) | |
562dd5e9 MR |
4067 | /* We can delete WINDOW now. */ |
4068 | { | |
95986d52 | 4069 | |
562dd5e9 MR |
4070 | /* Block input. */ |
4071 | BLOCK_INPUT; | |
d615d6d2 | 4072 | window_resize_apply (p, horflag); |
0d384044 | 4073 | |
95986d52 CY |
4074 | /* If this window is referred to by the dpyinfo's mouse |
4075 | highlight, invalidate that slot to be safe (Bug#9904). */ | |
4c5501e9 EZ |
4076 | if (!FRAME_INITIAL_P (f)) |
4077 | { | |
4078 | Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f); | |
4079 | ||
4080 | if (EQ (hlinfo->mouse_face_window, window)) | |
4081 | hlinfo->mouse_face_window = Qnil; | |
4082 | } | |
95986d52 | 4083 | |
562dd5e9 MR |
4084 | windows_or_buffers_changed++; |
4085 | Vwindow_list = Qnil; | |
4086 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
0d384044 | 4087 | |
e8c17b81 | 4088 | wset_next (w, Qnil); /* Don't delete w->next too. */ |
562dd5e9 | 4089 | free_window_matrices (w); |
bd99e242 | 4090 | |
d3d50620 | 4091 | if (!NILP (w->vchild)) |
0d384044 | 4092 | { |
d3d50620 | 4093 | delete_all_child_windows (w->vchild); |
e8c17b81 | 4094 | wset_vchild (w, Qnil); |
0d384044 | 4095 | } |
d3d50620 | 4096 | else if (!NILP (w->hchild)) |
bd99e242 | 4097 | { |
d3d50620 | 4098 | delete_all_child_windows (w->hchild); |
e8c17b81 | 4099 | wset_hchild (w, Qnil); |
bd99e242 | 4100 | } |
d3d50620 | 4101 | else if (!NILP (w->buffer)) |
bd99e242 | 4102 | { |
562dd5e9 | 4103 | unshow_buffer (w); |
d3d50620 DA |
4104 | unchain_marker (XMARKER (w->pointm)); |
4105 | unchain_marker (XMARKER (w->start)); | |
e8c17b81 | 4106 | wset_buffer (w, Qnil); |
bd99e242 RS |
4107 | } |
4108 | ||
d3d50620 | 4109 | if (NILP (s->prev) && NILP (s->next)) |
562dd5e9 MR |
4110 | /* A matrjoshka where SIBLING has become the only child of |
4111 | PARENT. */ | |
c32de52a | 4112 | { |
562dd5e9 MR |
4113 | /* Put SIBLING into PARENT's place. */ |
4114 | replace_window (parent, sibling, 0); | |
4115 | /* Have SIBLING inherit the following three slot values from | |
b6f67890 | 4116 | PARENT (the combination_limit slot is not inherited). */ |
e8c17b81 PE |
4117 | wset_normal_cols (s, p->normal_cols); |
4118 | wset_normal_lines (s, p->normal_lines); | |
562dd5e9 | 4119 | /* Mark PARENT as deleted. */ |
e8c17b81 PE |
4120 | wset_vchild (p, Qnil); |
4121 | wset_hchild (p, Qnil); | |
562dd5e9 MR |
4122 | /* Try to merge SIBLING into its new parent. */ |
4123 | recombine_windows (sibling); | |
c32de52a RS |
4124 | } |
4125 | ||
562dd5e9 MR |
4126 | adjust_glyphs (f); |
4127 | ||
4128 | if (!WINDOW_LIVE_P (FRAME_SELECTED_WINDOW (f))) | |
4129 | /* We deleted the frame's selected window. */ | |
0d384044 | 4130 | { |
562dd5e9 MR |
4131 | /* Use the frame's first window as fallback ... */ |
4132 | Lisp_Object new_selected_window = Fframe_first_window (frame); | |
4133 | /* ... but preferably use its most recently used window. */ | |
4134 | Lisp_Object mru_window; | |
0d384044 | 4135 | |
562dd5e9 MR |
4136 | /* `get-mru-window' might fail for some reason so play it safe |
4137 | - promote the first window _without recording it_ first. */ | |
4138 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
4139 | Fselect_window (new_selected_window, Qt); | |
4140 | else | |
f00af5b1 | 4141 | fset_selected_window (f, new_selected_window); |
0d384044 | 4142 | |
562dd5e9 | 4143 | UNBLOCK_INPUT; |
0d384044 | 4144 | |
562dd5e9 MR |
4145 | /* Now look whether `get-mru-window' gets us something. */ |
4146 | mru_window = call1 (Qget_mru_window, frame); | |
4147 | if (WINDOW_LIVE_P (mru_window) | |
d3d50620 | 4148 | && EQ (XWINDOW (mru_window)->frame, frame)) |
562dd5e9 | 4149 | new_selected_window = mru_window; |
bd99e242 | 4150 | |
562dd5e9 MR |
4151 | /* If all ended up well, we now promote the mru window. */ |
4152 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
4153 | Fselect_window (new_selected_window, Qnil); | |
4154 | else | |
f00af5b1 | 4155 | fset_selected_window (f, new_selected_window); |
0d384044 RS |
4156 | } |
4157 | else | |
562dd5e9 | 4158 | UNBLOCK_INPUT; |
0d384044 | 4159 | |
562dd5e9 MR |
4160 | /* Must be run by the caller: |
4161 | run_window_configuration_change_hook (f); */ | |
0d384044 | 4162 | } |
562dd5e9 MR |
4163 | else |
4164 | /* We failed: Relink WINDOW into window tree. */ | |
0d384044 | 4165 | { |
562dd5e9 MR |
4166 | if (before_sibling) |
4167 | { | |
e8c17b81 | 4168 | wset_prev (s, window); |
562dd5e9 | 4169 | if (horflag) |
e8c17b81 | 4170 | wset_hchild (p, window); |
562dd5e9 | 4171 | else |
e8c17b81 | 4172 | wset_vchild (p, window); |
562dd5e9 MR |
4173 | } |
4174 | else | |
4175 | { | |
e8c17b81 | 4176 | wset_next (s, window); |
d3d50620 | 4177 | if (!NILP (w->next)) |
e8c17b81 | 4178 | wset_prev (XWINDOW (w->next), window); |
562dd5e9 MR |
4179 | } |
4180 | error ("Deletion failed"); | |
0d384044 RS |
4181 | } |
4182 | ||
0d384044 RS |
4183 | return Qnil; |
4184 | } | |
f984d4fc GM |
4185 | \f |
4186 | /*********************************************************************** | |
4187 | Resizing Mini-Windows | |
4188 | ***********************************************************************/ | |
4189 | ||
562dd5e9 MR |
4190 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we |
4191 | can. */ | |
4192 | void | |
4193 | grow_mini_window (struct window *w, int delta) | |
f984d4fc | 4194 | { |
d3d50620 | 4195 | struct frame *f = XFRAME (w->frame); |
562dd5e9 MR |
4196 | struct window *r; |
4197 | Lisp_Object root, value; | |
f984d4fc | 4198 | |
a54e2c05 DA |
4199 | eassert (MINI_WINDOW_P (w)); |
4200 | eassert (delta >= 0); | |
f984d4fc | 4201 | |
562dd5e9 MR |
4202 | root = FRAME_ROOT_WINDOW (f); |
4203 | r = XWINDOW (root); | |
5386012d MR |
4204 | value = call2 (Qwindow_resize_root_window_vertically, |
4205 | root, make_number (- delta)); | |
d615d6d2 | 4206 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4207 | { |
562dd5e9 | 4208 | BLOCK_INPUT; |
d615d6d2 | 4209 | window_resize_apply (r, 0); |
f984d4fc | 4210 | |
562dd5e9 | 4211 | /* Grow the mini-window. */ |
e8c17b81 PE |
4212 | wset_top_line |
4213 | (w, make_number (XFASTINT (r->top_line) + XFASTINT (r->total_lines))); | |
4214 | wset_total_lines | |
4215 | (w, make_number (XFASTINT (w->total_lines) - XINT (value))); | |
80b00b08 DA |
4216 | w->last_modified = 0; |
4217 | w->last_overlay_modified = 0; | |
f984d4fc | 4218 | |
562dd5e9 MR |
4219 | adjust_glyphs (f); |
4220 | UNBLOCK_INPUT; | |
f984d4fc GM |
4221 | } |
4222 | } | |
4223 | ||
4224 | ||
562dd5e9 MR |
4225 | /* Shrink mini-window W. */ |
4226 | void | |
4227 | shrink_mini_window (struct window *w) | |
f984d4fc | 4228 | { |
d3d50620 | 4229 | struct frame *f = XFRAME (w->frame); |
562dd5e9 MR |
4230 | struct window *r; |
4231 | Lisp_Object root, value; | |
4232 | EMACS_INT size; | |
43b4a21f | 4233 | |
a54e2c05 | 4234 | eassert (MINI_WINDOW_P (w)); |
177c0ea7 | 4235 | |
d3d50620 | 4236 | size = XINT (w->total_lines); |
562dd5e9 MR |
4237 | if (size > 1) |
4238 | { | |
4239 | root = FRAME_ROOT_WINDOW (f); | |
4240 | r = XWINDOW (root); | |
5386012d | 4241 | value = call2 (Qwindow_resize_root_window_vertically, |
562dd5e9 | 4242 | root, make_number (size - 1)); |
d615d6d2 | 4243 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4244 | { |
562dd5e9 | 4245 | BLOCK_INPUT; |
d615d6d2 | 4246 | window_resize_apply (r, 0); |
43b4a21f | 4247 | |
562dd5e9 | 4248 | /* Shrink the mini-window. */ |
e8c17b81 PE |
4249 | wset_top_line (w, make_number (XFASTINT (r->top_line) |
4250 | + XFASTINT (r->total_lines))); | |
4251 | wset_total_lines (w, make_number (1)); | |
43b4a21f | 4252 | |
80b00b08 DA |
4253 | w->last_modified = 0; |
4254 | w->last_overlay_modified = 0; | |
43b4a21f | 4255 | |
562dd5e9 MR |
4256 | adjust_glyphs (f); |
4257 | UNBLOCK_INPUT; | |
f984d4fc | 4258 | } |
562dd5e9 MR |
4259 | /* If the above failed for whatever strange reason we must make a |
4260 | one window frame here. The same routine will be needed when | |
4261 | shrinking the frame (and probably when making the initial | |
4262 | *scratch* window). For the moment leave things as they are. */ | |
f984d4fc GM |
4263 | } |
4264 | } | |
4265 | ||
562dd5e9 MR |
4266 | DEFUN ("resize-mini-window-internal", Fresize_mini_window_internal, Sresize_mini_window_internal, 1, 1, 0, |
4267 | doc: /* Resize minibuffer window WINDOW. */) | |
4268 | (Lisp_Object window) | |
f984d4fc | 4269 | { |
562dd5e9 MR |
4270 | struct window *w = XWINDOW (window); |
4271 | struct window *r; | |
4272 | struct frame *f; | |
4273 | int height; | |
177c0ea7 | 4274 | |
562dd5e9 | 4275 | CHECK_WINDOW (window); |
d3d50620 | 4276 | f = XFRAME (w->frame); |
177c0ea7 | 4277 | |
d3d50620 | 4278 | if (!EQ (FRAME_MINIBUF_WINDOW (XFRAME (w->frame)), window)) |
562dd5e9 MR |
4279 | error ("Not a valid minibuffer window"); |
4280 | else if (FRAME_MINIBUF_ONLY_P (f)) | |
4281 | error ("Cannot resize a minibuffer-only frame"); | |
177c0ea7 | 4282 | |
562dd5e9 | 4283 | r = XWINDOW (FRAME_ROOT_WINDOW (f)); |
d3d50620 | 4284 | height = XINT (r->total_lines) + XINT (w->total_lines); |
d615d6d2 | 4285 | if (window_resize_check (r, 0) |
d3d50620 DA |
4286 | && XINT (w->new_total) > 0 |
4287 | && height == XINT (r->new_total) + XINT (w->new_total)) | |
f984d4fc | 4288 | { |
562dd5e9 | 4289 | BLOCK_INPUT; |
d615d6d2 | 4290 | window_resize_apply (r, 0); |
f984d4fc | 4291 | |
e8c17b81 PE |
4292 | wset_total_lines (w, w->new_total); |
4293 | wset_top_line (w, make_number (XINT (r->top_line) | |
4294 | + XINT (r->total_lines))); | |
177c0ea7 | 4295 | |
562dd5e9 MR |
4296 | windows_or_buffers_changed++; |
4297 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
f984d4fc | 4298 | adjust_glyphs (f); |
562dd5e9 | 4299 | UNBLOCK_INPUT; |
f984d4fc | 4300 | |
562dd5e9 MR |
4301 | run_window_configuration_change_hook (f); |
4302 | return Qt; | |
86c8e823 | 4303 | } |
562dd5e9 | 4304 | else error ("Failed to resize minibuffer window"); |
f984d4fc | 4305 | } |
562dd5e9 | 4306 | \f |
5500c422 GM |
4307 | /* Mark window cursors off for all windows in the window tree rooted |
4308 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4309 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4310 | the frame are cleared. */ | |
4311 | ||
4312 | void | |
971de7fb | 4313 | mark_window_cursors_off (struct window *w) |
5500c422 GM |
4314 | { |
4315 | while (w) | |
4316 | { | |
d3d50620 DA |
4317 | if (!NILP (w->hchild)) |
4318 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4319 | else if (!NILP (w->vchild)) | |
4320 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
5500c422 GM |
4321 | else |
4322 | w->phys_cursor_on_p = 0; | |
4323 | ||
d3d50620 | 4324 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
5500c422 GM |
4325 | } |
4326 | } | |
4327 | ||
4328 | ||
e9c195b1 | 4329 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4330 | |
4331 | int | |
971de7fb | 4332 | window_internal_height (struct window *w) |
7ab12479 | 4333 | { |
d3d50620 | 4334 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4335 | |
e9c195b1 GM |
4336 | if (!MINI_WINDOW_P (w)) |
4337 | { | |
d3d50620 DA |
4338 | if (!NILP (w->parent) |
4339 | || !NILP (w->vchild) | |
4340 | || !NILP (w->hchild) | |
4341 | || !NILP (w->next) | |
4342 | || !NILP (w->prev) | |
e9c195b1 GM |
4343 | || WINDOW_WANTS_MODELINE_P (w)) |
4344 | --ht; | |
7ab12479 | 4345 | |
e9c195b1 GM |
4346 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4347 | --ht; | |
4348 | } | |
7ab12479 JB |
4349 | |
4350 | return ht; | |
4351 | } | |
5500c422 GM |
4352 | \f |
4353 | /************************************************************************ | |
4354 | Window Scrolling | |
4355 | ***********************************************************************/ | |
535e0b8e | 4356 | |
5500c422 | 4357 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4358 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4359 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4360 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4361 | means don't signal an error if we try to move over BEGV or ZV, | |
4362 | respectively. */ | |
7ab12479 | 4363 | |
101d1605 | 4364 | static void |
d311d28c | 4365 | window_scroll (Lisp_Object window, EMACS_INT n, int whole, int noerror) |
5500c422 | 4366 | { |
cba59f77 | 4367 | immediate_quit = 1; |
d311d28c | 4368 | n = clip_to_bounds (INT_MIN, n, INT_MAX); |
cba59f77 | 4369 | |
5500c422 GM |
4370 | /* If we must, use the pixel-based version which is much slower than |
4371 | the line-based one but can handle varying line heights. */ | |
d3d50620 | 4372 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) |
5500c422 GM |
4373 | window_scroll_pixel_based (window, n, whole, noerror); |
4374 | else | |
4375 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4376 | |
4377 | immediate_quit = 0; | |
5500c422 GM |
4378 | } |
4379 | ||
4380 | ||
4381 | /* Implementation of window_scroll that works based on pixel line | |
4382 | heights. See the comment of window_scroll for parameter | |
4383 | descriptions. */ | |
4384 | ||
4385 | static void | |
971de7fb | 4386 | window_scroll_pixel_based (Lisp_Object window, int n, int whole, int noerror) |
5500c422 GM |
4387 | { |
4388 | struct it it; | |
4389 | struct window *w = XWINDOW (window); | |
4390 | struct text_pos start; | |
5500c422 | 4391 | int this_scroll_margin; |
9d14503e | 4392 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5cdb3cf3 | 4393 | int vscrolled = 0; |
5a857365 | 4394 | int x, y, rtop, rbot, rowh, vpos; |
57b3e30b | 4395 | void *itdata = NULL; |
5500c422 | 4396 | |
d3d50620 | 4397 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
f0ee99a0 EZ |
4398 | /* Scrolling a minibuffer window via scroll bar when the echo area |
4399 | shows long text sometimes resets the minibuffer contents behind | |
4400 | our backs. */ | |
4401 | if (CHARPOS (start) > ZV) | |
4402 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
177c0ea7 | 4403 | |
5500c422 | 4404 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4405 | the screen. Allow PT to be partially visible, otherwise |
4406 | something like (scroll-down 1) with PT in the line before | |
4407 | the partially visible one would recenter. */ | |
5a857365 KS |
4408 | |
4409 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 | 4410 | { |
57b3e30b | 4411 | itdata = bidi_shelve_cache (); |
5500c422 GM |
4412 | /* Move backward half the height of the window. Performance note: |
4413 | vmotion used here is about 10% faster, but would give wrong | |
4414 | results for variable height lines. */ | |
4415 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4416 | it.current_y = it.last_visible_y; | |
f204989e | 4417 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4418 | |
5500c422 GM |
4419 | /* The function move_iterator_vertically may move over more than |
4420 | the specified y-distance. If it->w is small, e.g. a | |
4421 | mini-buffer window, we may end up in front of the window's | |
4422 | display area. This is the case when Start displaying at the | |
4423 | start of the line containing PT in this case. */ | |
4424 | if (it.current_y <= 0) | |
4425 | { | |
4426 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4427 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4428 | it.current_y = 0; |
4429 | } | |
4430 | ||
4431 | start = it.current.pos; | |
35928349 | 4432 | bidi_unshelve_cache (itdata, 0); |
5500c422 | 4433 | } |
e56263e5 KS |
4434 | else if (auto_window_vscroll_p) |
4435 | { | |
5a857365 | 4436 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
4437 | { |
4438 | int px; | |
4439 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4440 | if (whole) | |
e856c216 KS |
4441 | dy = max ((window_box_height (w) |
4442 | - next_screen_context_lines * dy), | |
4443 | dy); | |
e56263e5 KS |
4444 | dy *= n; |
4445 | ||
5a857365 | 4446 | if (n < 0) |
e56263e5 | 4447 | { |
5a857365 KS |
4448 | /* Only vscroll backwards if already vscrolled forwards. */ |
4449 | if (w->vscroll < 0 && rtop > 0) | |
4450 | { | |
4451 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
4452 | Fset_window_vscroll (window, make_number (px), Qt); | |
4453 | return; | |
4454 | } | |
e56263e5 | 4455 | } |
5a857365 | 4456 | if (n > 0) |
e56263e5 | 4457 | { |
5a857365 KS |
4458 | /* Do vscroll if already vscrolled or only display line. */ |
4459 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
4460 | { | |
4461 | px = max (0, -w->vscroll + min (rbot, dy)); | |
4462 | Fset_window_vscroll (window, make_number (px), Qt); | |
4463 | return; | |
4464 | } | |
4465 | ||
4466 | /* Maybe modify window start instead of scrolling. */ | |
4467 | if (rbot > 0 || w->vscroll < 0) | |
4468 | { | |
d311d28c | 4469 | ptrdiff_t spos; |
5a857365 KS |
4470 | |
4471 | Fset_window_vscroll (window, make_number (0), Qt); | |
4472 | /* If there are other text lines above the current row, | |
4473 | move window start to current row. Else to next row. */ | |
4474 | if (rbot > 0) | |
4475 | spos = XINT (Fline_beginning_position (Qnil)); | |
4476 | else | |
4477 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
d3d50620 DA |
4478 | set_marker_restricted (w->start, make_number (spos), |
4479 | w->buffer); | |
c98ff5dd DA |
4480 | w->start_at_line_beg = 1; |
4481 | w->update_mode_line = 1; | |
80b00b08 DA |
4482 | w->last_modified = 0; |
4483 | w->last_overlay_modified = 0; | |
5a857365 KS |
4484 | /* Set force_start so that redisplay_window will run the |
4485 | window-scroll-functions. */ | |
c98ff5dd | 4486 | w->force_start = 1; |
5a857365 KS |
4487 | return; |
4488 | } | |
e56263e5 KS |
4489 | } |
4490 | } | |
5a857365 | 4491 | /* Cancel previous vscroll. */ |
e56263e5 KS |
4492 | Fset_window_vscroll (window, make_number (0), Qt); |
4493 | } | |
5500c422 | 4494 | |
57b3e30b | 4495 | itdata = bidi_shelve_cache (); |
d0c38d63 | 4496 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
4497 | point in the same window line as it is now, so get that line. */ |
4498 | if (!NILP (Vscroll_preserve_screen_position)) | |
4499 | { | |
c525d842 | 4500 | /* We preserve the goal pixel coordinate across consecutive |
a4b000fb JL |
4501 | calls to scroll-up, scroll-down and other commands that |
4502 | have the `scroll-command' property. This avoids the | |
c525d842 CY |
4503 | possibility of point becoming "stuck" on a tall line when |
4504 | scrolling by one line. */ | |
66fe93d1 | 4505 | if (window_scroll_pixel_based_preserve_y < 0 |
1344aad4 TT |
4506 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4507 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c525d842 CY |
4508 | { |
4509 | start_display (&it, w, start); | |
4510 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 4511 | window_scroll_pixel_based_preserve_y = it.current_y; |
c876b227 | 4512 | window_scroll_pixel_based_preserve_x = it.current_x; |
c525d842 | 4513 | } |
5500c422 GM |
4514 | } |
4515 | else | |
c876b227 SM |
4516 | window_scroll_pixel_based_preserve_y |
4517 | = window_scroll_pixel_based_preserve_x = -1; | |
5500c422 GM |
4518 | |
4519 | /* Move iterator it from start the specified distance forward or | |
4520 | backward. The result is the new window start. */ | |
4521 | start_display (&it, w, start); | |
4522 | if (whole) | |
4523 | { | |
d311d28c | 4524 | ptrdiff_t start_pos = IT_CHARPOS (it); |
e856c216 KS |
4525 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); |
4526 | dy = max ((window_box_height (w) | |
4527 | - next_screen_context_lines * dy), | |
4528 | dy) * n; | |
d72340d4 GM |
4529 | |
4530 | /* Note that move_it_vertically always moves the iterator to the | |
4531 | start of a line. So, if the last line doesn't have a newline, | |
4532 | we would end up at the start of the line ending at ZV. */ | |
4533 | if (dy <= 0) | |
e856c216 KS |
4534 | { |
4535 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 4536 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
4537 | looking at an image that is taller that the window height. */ |
4538 | while (start_pos == IT_CHARPOS (it) | |
4539 | && start_pos > BEGV) | |
e4cc2dfc | 4540 | move_it_by_lines (&it, -1); |
e856c216 | 4541 | } |
d72340d4 | 4542 | else if (dy > 0) |
bed83ee4 | 4543 | { |
bed83ee4 KS |
4544 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
4545 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 4546 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
4547 | looking at an image that is taller that the window height. */ |
4548 | while (start_pos == IT_CHARPOS (it) | |
4549 | && start_pos < ZV) | |
e4cc2dfc | 4550 | move_it_by_lines (&it, 1); |
bed83ee4 | 4551 | } |
5500c422 GM |
4552 | } |
4553 | else | |
e4cc2dfc | 4554 | move_it_by_lines (&it, n); |
5500c422 | 4555 | |
96ae58c8 RS |
4556 | /* We failed if we find ZV is already on the screen (scrolling up, |
4557 | means there's nothing past the end), or if we can't start any | |
4558 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 4559 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 4560 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 4561 | { |
5cdb3cf3 MB |
4562 | if (IT_CHARPOS (it) == ZV) |
4563 | { | |
07ce8b53 RS |
4564 | if (it.current_y < it.last_visible_y |
4565 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 4566 | > it.last_visible_y)) |
a74eca50 GM |
4567 | { |
4568 | /* The last line was only partially visible, make it fully | |
4569 | visible. */ | |
4570 | w->vscroll = (it.last_visible_y | |
4571 | - it.current_y + it.max_ascent + it.max_descent); | |
4572 | adjust_glyphs (it.f); | |
4573 | } | |
5cdb3cf3 | 4574 | else |
57b3e30b | 4575 | { |
35928349 | 4576 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
4577 | if (noerror) |
4578 | return; | |
4579 | else if (n < 0) /* could happen with empty buffers */ | |
4580 | xsignal0 (Qbeginning_of_buffer); | |
4581 | else | |
4582 | xsignal0 (Qend_of_buffer); | |
4583 | } | |
5cdb3cf3 | 4584 | } |
5500c422 | 4585 | else |
5cdb3cf3 MB |
4586 | { |
4587 | if (w->vscroll != 0) | |
4588 | /* The first line was only partially visible, make it fully | |
4589 | visible. */ | |
4590 | w->vscroll = 0; | |
5cdb3cf3 | 4591 | else |
57b3e30b | 4592 | { |
35928349 | 4593 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
4594 | if (noerror) |
4595 | return; | |
4596 | else | |
4597 | xsignal0 (Qbeginning_of_buffer); | |
4598 | } | |
5cdb3cf3 MB |
4599 | } |
4600 | ||
4601 | /* If control gets here, then we vscrolled. */ | |
4602 | ||
d3d50620 | 4603 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
5cdb3cf3 MB |
4604 | |
4605 | /* Don't try to change the window start below. */ | |
4606 | vscrolled = 1; | |
5500c422 GM |
4607 | } |
4608 | ||
5cdb3cf3 MB |
4609 | if (! vscrolled) |
4610 | { | |
d311d28c PE |
4611 | ptrdiff_t pos = IT_CHARPOS (it); |
4612 | ptrdiff_t bytepos; | |
e68def1e AS |
4613 | |
4614 | /* If in the middle of a multi-glyph character move forward to | |
4615 | the next character. */ | |
4616 | if (in_display_vector_p (&it)) | |
4617 | { | |
4618 | ++pos; | |
4619 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
4620 | } | |
4621 | ||
5cdb3cf3 | 4622 | /* Set the window start, and set up the window for redisplay. */ |
d3d50620 DA |
4623 | set_marker_restricted (w->start, make_number (pos), |
4624 | w->buffer); | |
4625 | bytepos = XMARKER (w->start)->bytepos; | |
c98ff5dd DA |
4626 | w->start_at_line_beg = (pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n'); |
4627 | w->update_mode_line = 1; | |
80b00b08 DA |
4628 | w->last_modified = 0; |
4629 | w->last_overlay_modified = 0; | |
5cdb3cf3 MB |
4630 | /* Set force_start so that redisplay_window will run the |
4631 | window-scroll-functions. */ | |
c98ff5dd | 4632 | w->force_start = 1; |
5cdb3cf3 | 4633 | } |
177c0ea7 | 4634 | |
dc297565 RS |
4635 | /* The rest of this function uses current_y in a nonstandard way, |
4636 | not including the height of the header line if any. */ | |
5500c422 | 4637 | it.current_y = it.vpos = 0; |
177c0ea7 | 4638 | |
940f53e5 RS |
4639 | /* Move PT out of scroll margins. |
4640 | This code wants current_y to be zero at the window start position | |
4641 | even if there is a header line. */ | |
4642 | this_scroll_margin = max (0, scroll_margin); | |
3a45383a | 4643 | this_scroll_margin |
d3d50620 | 4644 | = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); |
940f53e5 RS |
4645 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); |
4646 | ||
4647 | if (n > 0) | |
5500c422 | 4648 | { |
940f53e5 RS |
4649 | /* We moved the window start towards ZV, so PT may be now |
4650 | in the scroll margin at the top. */ | |
4651 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
4652 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
4653 | && (NILP (Vscroll_preserve_screen_position) | |
4654 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4655 | /* We found PT at a legitimate height. Leave it alone. */ |
4656 | ; | |
66fe93d1 | 4657 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4658 | { |
fa3c3426 RS |
4659 | /* If we have a header line, take account of it. |
4660 | This is necessary because we set it.current_y to 0, above. */ | |
c876b227 SM |
4661 | move_it_to (&it, -1, |
4662 | window_scroll_pixel_based_preserve_x, | |
66fe93d1 LT |
4663 | window_scroll_pixel_based_preserve_y |
4664 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c876b227 | 4665 | -1, MOVE_TO_Y | MOVE_TO_X); |
940f53e5 RS |
4666 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4667 | } | |
4668 | else | |
5500c422 | 4669 | { |
5500c422 | 4670 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
4671 | { |
4672 | int prev = it.current_y; | |
e4cc2dfc | 4673 | move_it_by_lines (&it, 1); |
e9b2c961 RS |
4674 | if (prev == it.current_y) |
4675 | break; | |
4676 | } | |
5500c422 GM |
4677 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4678 | } | |
940f53e5 RS |
4679 | } |
4680 | else if (n < 0) | |
4681 | { | |
d311d28c | 4682 | ptrdiff_t charpos, bytepos; |
aed328bf | 4683 | int partial_p; |
940f53e5 | 4684 | |
66fe93d1 LT |
4685 | /* Save our position, for the |
4686 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
4687 | charpos = IT_CHARPOS (it); |
4688 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 4689 | |
940f53e5 RS |
4690 | /* We moved the window start towards BEGV, so PT may be now |
4691 | in the scroll margin at the bottom. */ | |
4692 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
4693 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
4694 | - this_scroll_margin - 1), | |
4695 | -1, | |
940f53e5 RS |
4696 | MOVE_TO_POS | MOVE_TO_Y); |
4697 | ||
aed328bf KS |
4698 | /* Save our position, in case it's correct. */ |
4699 | charpos = IT_CHARPOS (it); | |
4700 | bytepos = IT_BYTEPOS (it); | |
4701 | ||
4702 | /* See if point is on a partially visible line at the end. */ | |
4703 | if (it.what == IT_EOB) | |
4704 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
4705 | else | |
4706 | { | |
e4cc2dfc | 4707 | move_it_by_lines (&it, 1); |
aed328bf KS |
4708 | partial_p = it.current_y > it.last_visible_y; |
4709 | } | |
4710 | ||
bdf4ec93 RS |
4711 | if (charpos == PT && !partial_p |
4712 | && (NILP (Vscroll_preserve_screen_position) | |
4713 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4714 | /* We found PT before we found the display margin, so PT is ok. */ |
4715 | ; | |
66fe93d1 | 4716 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4717 | { |
d3d50620 | 4718 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
940f53e5 | 4719 | start_display (&it, w, start); |
c525d842 CY |
4720 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
4721 | here because we called start_display again and did not | |
4722 | alter it.current_y this time. */ | |
c876b227 SM |
4723 | move_it_to (&it, -1, window_scroll_pixel_based_preserve_x, |
4724 | window_scroll_pixel_based_preserve_y, -1, | |
4725 | MOVE_TO_Y | MOVE_TO_X); | |
940f53e5 RS |
4726 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4727 | } | |
4728 | else | |
4729 | { | |
aed328bf | 4730 | if (partial_p) |
5cdb3cf3 MB |
4731 | /* The last line was only partially visible, so back up two |
4732 | lines to make sure we're on a fully visible line. */ | |
4733 | { | |
e4cc2dfc | 4734 | move_it_by_lines (&it, -2); |
5cdb3cf3 MB |
4735 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4736 | } | |
4737 | else | |
4738 | /* No, the position we saved is OK, so use it. */ | |
4739 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
4740 | } |
4741 | } | |
35928349 | 4742 | bidi_unshelve_cache (itdata, 0); |
5500c422 GM |
4743 | } |
4744 | ||
4745 | ||
4746 | /* Implementation of window_scroll that works based on screen lines. | |
4747 | See the comment of window_scroll for parameter descriptions. */ | |
4748 | ||
4749 | static void | |
971de7fb | 4750 | window_scroll_line_based (Lisp_Object window, int n, int whole, int noerror) |
7ab12479 JB |
4751 | { |
4752 | register struct window *w = XWINDOW (window); | |
03ab8921 EZ |
4753 | /* Fvertical_motion enters redisplay, which can trigger |
4754 | fontification, which in turn can modify buffer text (e.g., if the | |
4755 | fontification functions replace escape sequences with faces, as | |
4756 | in `grep-mode-font-lock-keywords'). So we use a marker to record | |
4757 | the old point position, to prevent crashes in SET_PT_BOTH. */ | |
4758 | Lisp_Object opoint_marker = Fpoint_marker (); | |
d311d28c | 4759 | register ptrdiff_t pos, pos_byte; |
7ab12479 JB |
4760 | register int ht = window_internal_height (w); |
4761 | register Lisp_Object tem; | |
4762 | int lose; | |
5500c422 | 4763 | Lisp_Object bolp; |
d311d28c | 4764 | ptrdiff_t startpos; |
c876b227 | 4765 | Lisp_Object original_pos = Qnil; |
101d1605 | 4766 | |
d4e7cf01 GM |
4767 | /* If scrolling screen-fulls, compute the number of lines to |
4768 | scroll from the window's height. */ | |
4769 | if (whole) | |
4770 | n *= max (1, ht - next_screen_context_lines); | |
4771 | ||
d3d50620 | 4772 | startpos = marker_position (w->start); |
101d1605 | 4773 | |
c876b227 SM |
4774 | if (!NILP (Vscroll_preserve_screen_position)) |
4775 | { | |
4776 | if (window_scroll_preserve_vpos <= 0 | |
1344aad4 TT |
4777 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4778 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c876b227 SM |
4779 | { |
4780 | struct position posit | |
4781 | = *compute_motion (startpos, 0, 0, 0, | |
4782 | PT, ht, 0, | |
80b00b08 | 4783 | -1, w->hscroll, |
c876b227 SM |
4784 | 0, w); |
4785 | window_scroll_preserve_vpos = posit.vpos; | |
80b00b08 | 4786 | window_scroll_preserve_hpos = posit.hpos + w->hscroll; |
c876b227 SM |
4787 | } |
4788 | ||
4789 | original_pos = Fcons (make_number (window_scroll_preserve_hpos), | |
4790 | make_number (window_scroll_preserve_vpos)); | |
4791 | } | |
0a1f771a | 4792 | |
d834a2e9 | 4793 | XSETFASTINT (tem, PT); |
6ffdb539 | 4794 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 4795 | |
265a9e55 | 4796 | if (NILP (tem)) |
7ab12479 | 4797 | { |
cd2be1dd | 4798 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 4799 | startpos = PT; |
7ab12479 JB |
4800 | } |
4801 | ||
345d45b2 | 4802 | SET_PT (startpos); |
5ce7b543 | 4803 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 4804 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 4805 | pos = PT; |
b73ea88e | 4806 | pos_byte = PT_BYTE; |
7ab12479 | 4807 | bolp = Fbolp (); |
03ab8921 EZ |
4808 | SET_PT_BOTH (marker_position (opoint_marker), |
4809 | marker_byte_position (opoint_marker)); | |
7ab12479 JB |
4810 | |
4811 | if (lose) | |
f8026fd8 JB |
4812 | { |
4813 | if (noerror) | |
4814 | return; | |
4815 | else | |
ba96a5cf | 4816 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 4817 | } |
7ab12479 JB |
4818 | |
4819 | if (pos < ZV) | |
7ab12479 | 4820 | { |
0c7da84e | 4821 | /* Don't use a scroll margin that is negative or too large. */ |
71f02bc5 | 4822 | int this_scroll_margin = |
d3d50620 | 4823 | max (0, min (scroll_margin, XINT (w->total_lines) / 4)); |
0c7da84e | 4824 | |
d3d50620 | 4825 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
c98ff5dd DA |
4826 | w->start_at_line_beg = !NILP (bolp); |
4827 | w->update_mode_line = 1; | |
80b00b08 DA |
4828 | w->last_modified = 0; |
4829 | w->last_overlay_modified = 0; | |
345d45b2 RS |
4830 | /* Set force_start so that redisplay_window will run |
4831 | the window-scroll-functions. */ | |
c98ff5dd | 4832 | w->force_start = 1; |
0c7da84e | 4833 | |
bdf4ec93 RS |
4834 | if (!NILP (Vscroll_preserve_screen_position) |
4835 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 4836 | { |
b73ea88e | 4837 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4838 | Fvertical_motion (original_pos, window); |
0c7da84e | 4839 | } |
101d1605 RS |
4840 | /* If we scrolled forward, put point enough lines down |
4841 | that it is outside the scroll margin. */ | |
4842 | else if (n > 0) | |
0c7da84e | 4843 | { |
101d1605 RS |
4844 | int top_margin; |
4845 | ||
4846 | if (this_scroll_margin > 0) | |
4847 | { | |
b73ea88e | 4848 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4849 | Fvertical_motion (make_number (this_scroll_margin), window); |
4850 | top_margin = PT; | |
4851 | } | |
4852 | else | |
4853 | top_margin = pos; | |
4854 | ||
03ab8921 EZ |
4855 | if (top_margin <= marker_position (opoint_marker)) |
4856 | SET_PT_BOTH (marker_position (opoint_marker), | |
4857 | marker_byte_position (opoint_marker)); | |
5500c422 | 4858 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 4859 | { |
b73ea88e | 4860 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4861 | Fvertical_motion (original_pos, window); |
101d1605 | 4862 | } |
9317a85d | 4863 | else |
335406fc | 4864 | SET_PT (top_margin); |
0c7da84e | 4865 | } |
101d1605 | 4866 | else if (n < 0) |
7ab12479 | 4867 | { |
101d1605 RS |
4868 | int bottom_margin; |
4869 | ||
0c7da84e RS |
4870 | /* If we scrolled backward, put point near the end of the window |
4871 | but not within the scroll margin. */ | |
b73ea88e | 4872 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 4873 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
4874 | if (XFASTINT (tem) == ht - this_scroll_margin) |
4875 | bottom_margin = PT; | |
4876 | else | |
4877 | bottom_margin = PT + 1; | |
4878 | ||
03ab8921 EZ |
4879 | if (bottom_margin > marker_position (opoint_marker)) |
4880 | SET_PT_BOTH (marker_position (opoint_marker), | |
4881 | marker_byte_position (opoint_marker)); | |
7ab12479 | 4882 | else |
101d1605 | 4883 | { |
5500c422 | 4884 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 4885 | { |
b73ea88e | 4886 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4887 | Fvertical_motion (original_pos, window); |
9317a85d RS |
4888 | } |
4889 | else | |
4890 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 4891 | } |
7ab12479 JB |
4892 | } |
4893 | } | |
4894 | else | |
f8026fd8 JB |
4895 | { |
4896 | if (noerror) | |
4897 | return; | |
4898 | else | |
ba96a5cf | 4899 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 4900 | } |
7ab12479 | 4901 | } |
5500c422 GM |
4902 | |
4903 | ||
4904 | /* Scroll selected_window up or down. If N is nil, scroll a | |
4905 | screen-full which is defined as the height of the window minus | |
4906 | next_screen_context_lines. If N is the symbol `-', scroll. | |
4907 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
4908 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
4909 | |
4910 | static void | |
971de7fb | 4911 | scroll_command (Lisp_Object n, int direction) |
7ab12479 | 4912 | { |
d311d28c | 4913 | ptrdiff_t count = SPECPDL_INDEX (); |
7ab12479 | 4914 | |
a54e2c05 | 4915 | eassert (eabs (direction) == 1); |
5500c422 GM |
4916 | |
4917 | /* If selected window's buffer isn't current, make it current for | |
4918 | the moment. But don't screw up if window_scroll gets an error. */ | |
d3d50620 | 4919 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
4920 | { |
4921 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
d3d50620 | 4922 | Fset_buffer (XWINDOW (selected_window)->buffer); |
5500c422 GM |
4923 | |
4924 | /* Make redisplay consider other windows than just selected_window. */ | |
4925 | ++windows_or_buffers_changed; | |
95605e15 | 4926 | } |
7ab12479 | 4927 | |
265a9e55 | 4928 | if (NILP (n)) |
d4e7cf01 | 4929 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 4930 | else if (EQ (n, Qminus)) |
d4e7cf01 | 4931 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
4932 | else |
4933 | { | |
4934 | n = Fprefix_numeric_value (n); | |
101d1605 | 4935 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 4936 | } |
95605e15 JB |
4937 | |
4938 | unbind_to (count, Qnil); | |
7ab12479 JB |
4939 | } |
4940 | ||
e0965597 | 4941 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
12bb3111 | 4942 | doc: /* Scroll text of selected window upward ARG lines. |
a0a37a6f | 4943 | If ARG is omitted or nil, scroll upward by a near full screen. |
fdb82f93 PJ |
4944 | A near full screen is `next-screen-context-lines' less than a full screen. |
4945 | Negative ARG means scroll downward. | |
4946 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4947 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4948 | (Lisp_Object arg) |
7ab12479 | 4949 | { |
413430c5 | 4950 | scroll_command (arg, 1); |
7ab12479 JB |
4951 | return Qnil; |
4952 | } | |
4953 | ||
e0965597 | 4954 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
12bb3111 | 4955 | doc: /* Scroll text of selected window down ARG lines. |
a0a37a6f | 4956 | If ARG is omitted or nil, scroll down by a near full screen. |
fdb82f93 PJ |
4957 | A near full screen is `next-screen-context-lines' less than a full screen. |
4958 | Negative ARG means scroll upward. | |
4959 | If ARG is the atom `-', scroll upward by nearly full screen. | |
4960 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4961 | (Lisp_Object arg) |
7ab12479 | 4962 | { |
413430c5 | 4963 | scroll_command (arg, -1); |
7ab12479 JB |
4964 | return Qnil; |
4965 | } | |
ccd0664b RS |
4966 | \f |
4967 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 4968 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 4969 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
4970 | showing that buffer is used. |
4971 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4972 | specifies the window. This takes precedence over | |
4973 | `other-window-scroll-buffer'. */) | |
5842a27b | 4974 | (void) |
7ab12479 | 4975 | { |
ccd0664b | 4976 | Lisp_Object window; |
7ab12479 JB |
4977 | |
4978 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 4979 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
4980 | window = Vminibuf_scroll_window; |
4981 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 4982 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
4983 | { |
4984 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 4985 | if (NILP (window)) |
87478b52 | 4986 | window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
4987 | } |
4988 | else | |
dbc4e1c1 JB |
4989 | { |
4990 | /* Nothing specified; look for a neighboring window on the same | |
4991 | frame. */ | |
4992 | window = Fnext_window (selected_window, Qnil, Qnil); | |
4993 | ||
4994 | if (EQ (window, selected_window)) | |
4995 | /* That didn't get us anywhere; look for a window on another | |
4996 | visible frame. */ | |
4997 | do | |
4998 | window = Fnext_window (window, Qnil, Qt); | |
4999 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
5000 | && ! EQ (window, selected_window)); | |
5001 | } | |
5002 | ||
b7826503 | 5003 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
5004 | |
5005 | if (EQ (window, selected_window)) | |
5006 | error ("There is no other window"); | |
5007 | ||
ccd0664b RS |
5008 | return window; |
5009 | } | |
5010 | ||
5011 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
5012 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
5013 | A near full screen is `next-screen-context-lines' less than a full screen. | |
5014 | The next window is the one below the current one; or the one at the top | |
5015 | if the current one is at the bottom. Negative ARG means scroll downward. | |
5016 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5017 | When calling from a program, supply as argument a number, nil, or `-'. | |
5018 | ||
fdb82f93 | 5019 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5020 | showing that buffer, popping the buffer up if necessary. |
5021 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5022 | specifies the window to scroll. This takes precedence over | |
5023 | `other-window-scroll-buffer'. */) | |
5842a27b | 5024 | (Lisp_Object arg) |
ccd0664b | 5025 | { |
d4e7cf01 GM |
5026 | Lisp_Object window; |
5027 | struct window *w; | |
d311d28c | 5028 | ptrdiff_t count = SPECPDL_INDEX (); |
ccd0664b RS |
5029 | |
5030 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5031 | w = XWINDOW (window); |
7ab12479 JB |
5032 | |
5033 | /* Don't screw up if window_scroll gets an error. */ | |
5034 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5035 | ++windows_or_buffers_changed; |
7ab12479 | 5036 | |
d3d50620 DA |
5037 | Fset_buffer (w->buffer); |
5038 | SET_PT (marker_position (w->pointm)); | |
7ab12479 | 5039 | |
413430c5 | 5040 | if (NILP (arg)) |
d4e7cf01 | 5041 | window_scroll (window, 1, 1, 1); |
413430c5 | 5042 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5043 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5044 | else |
5045 | { | |
413430c5 | 5046 | if (CONSP (arg)) |
7d7bbefd | 5047 | arg = XCAR (arg); |
b7826503 | 5048 | CHECK_NUMBER (arg); |
101d1605 | 5049 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5050 | } |
5051 | ||
d3d50620 | 5052 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5053 | unbind_to (count, Qnil); |
7ab12479 JB |
5054 | |
5055 | return Qnil; | |
5056 | } | |
5057 | \f | |
e0965597 | 5058 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 5059 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5060 | Default for ARG is window width minus 2. |
5061 | Value is the total amount of leftward horizontal scrolling in | |
5062 | effect after the change. | |
23fe745a | 5063 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5064 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5065 | will not scroll a window to a column less than the value returned |
dc297565 | 5066 | by this function. This happens in an interactive call. */) |
5842a27b | 5067 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 5068 | { |
c67fa410 | 5069 | struct window *w = XWINDOW (selected_window); |
aa754e6a PE |
5070 | EMACS_INT requested_arg = (NILP (arg) |
5071 | ? window_body_cols (w) - 2 | |
5072 | : XINT (Fprefix_numeric_value (arg))); | |
24a212eb | 5073 | Lisp_Object result = set_window_hscroll (w, w->hscroll + requested_arg); |
c67fa410 | 5074 | |
dc297565 | 5075 | if (!NILP (set_minimum)) |
c67fa410 GM |
5076 | w->min_hscroll = w->hscroll; |
5077 | ||
5078 | return result; | |
7ab12479 JB |
5079 | } |
5080 | ||
e0965597 | 5081 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 5082 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5083 | Default for ARG is window width minus 2. |
5084 | Value is the total amount of leftward horizontal scrolling in | |
5085 | effect after the change. | |
23fe745a | 5086 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5087 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5088 | will not scroll a window to a column less than the value returned |
dc297565 | 5089 | by this function. This happens in an interactive call. */) |
5842a27b | 5090 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 5091 | { |
c67fa410 | 5092 | struct window *w = XWINDOW (selected_window); |
aa754e6a PE |
5093 | EMACS_INT requested_arg = (NILP (arg) |
5094 | ? window_body_cols (w) - 2 | |
5095 | : XINT (Fprefix_numeric_value (arg))); | |
24a212eb | 5096 | Lisp_Object result = set_window_hscroll (w, w->hscroll - requested_arg); |
177c0ea7 | 5097 | |
dc297565 | 5098 | if (!NILP (set_minimum)) |
c67fa410 GM |
5099 | w->min_hscroll = w->hscroll; |
5100 | ||
5101 | return result; | |
7ab12479 JB |
5102 | } |
5103 | ||
fa832261 KS |
5104 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5105 | doc: /* Return the window which was selected when entering the minibuffer. | |
12bb3111 | 5106 | Returns nil, if selected window is not a minibuffer window. */) |
5842a27b | 5107 | (void) |
fa832261 KS |
5108 | { |
5109 | if (minibuf_level > 0 | |
5110 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5111 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5112 | return minibuf_selected_window; | |
5113 | ||
5114 | return Qnil; | |
5115 | } | |
5116 | ||
12c8b416 GM |
5117 | /* Value is the number of lines actually displayed in window W, |
5118 | as opposed to its height. */ | |
5119 | ||
5120 | static int | |
971de7fb | 5121 | displayed_window_lines (struct window *w) |
12c8b416 GM |
5122 | { |
5123 | struct it it; | |
5124 | struct text_pos start; | |
5125 | int height = window_box_height (w); | |
5126 | struct buffer *old_buffer; | |
5127 | int bottom_y; | |
57b3e30b | 5128 | void *itdata = NULL; |
12c8b416 | 5129 | |
d3d50620 | 5130 | if (XBUFFER (w->buffer) != current_buffer) |
12c8b416 GM |
5131 | { |
5132 | old_buffer = current_buffer; | |
d3d50620 | 5133 | set_buffer_internal (XBUFFER (w->buffer)); |
12c8b416 GM |
5134 | } |
5135 | else | |
5136 | old_buffer = NULL; | |
5137 | ||
521b203e GM |
5138 | /* In case W->start is out of the accessible range, do something |
5139 | reasonable. This happens in Info mode when Info-scroll-down | |
5140 | calls (recenter -1) while W->start is 1. */ | |
d3d50620 | 5141 | if (XMARKER (w->start)->charpos < BEGV) |
521b203e | 5142 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); |
d3d50620 | 5143 | else if (XMARKER (w->start)->charpos > ZV) |
521b203e GM |
5144 | SET_TEXT_POS (start, ZV, ZV_BYTE); |
5145 | else | |
d3d50620 | 5146 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
521b203e | 5147 | |
57b3e30b | 5148 | itdata = bidi_shelve_cache (); |
12c8b416 GM |
5149 | start_display (&it, w, start); |
5150 | move_it_vertically (&it, height); | |
c8bc6f65 | 5151 | bottom_y = line_bottom_y (&it); |
35928349 | 5152 | bidi_unshelve_cache (itdata, 0); |
12c8b416 | 5153 | |
1de65f51 RS |
5154 | /* rms: On a non-window display, |
5155 | the value of it.vpos at the bottom of the screen | |
5156 | seems to be 1 larger than window_box_height (w). | |
5157 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5158 | when ZV is on the last screen line | |
5159 | moves to the previous screen line instead of the last one. */ | |
d3d50620 | 5160 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) |
1de65f51 RS |
5161 | height++; |
5162 | ||
12c8b416 GM |
5163 | /* Add in empty lines at the bottom of the window. */ |
5164 | if (bottom_y < height) | |
5165 | { | |
949cf20f | 5166 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5167 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5168 | } |
5169 | ||
c8bc6f65 GM |
5170 | if (old_buffer) |
5171 | set_buffer_internal (old_buffer); | |
5172 | ||
12c8b416 GM |
5173 | return it.vpos; |
5174 | } | |
5175 | ||
5176 | ||
a7ca3326 | 5177 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
666e158e | 5178 | doc: /* Center point in selected window and maybe redisplay frame. |
fdb82f93 | 5179 | With prefix argument ARG, recenter putting point on screen line ARG |
12bb3111 | 5180 | relative to the selected window. If ARG is negative, it counts up from the |
fdb82f93 PJ |
5181 | bottom of the window. (ARG should be less than the height of the window.) |
5182 | ||
666e158e MB |
5183 | If ARG is omitted or nil, then recenter with point on the middle line of |
5184 | the selected window; if the variable `recenter-redisplay' is non-nil, | |
5185 | also erase the entire frame and redraw it (when `auto-resize-tool-bars' | |
5186 | is set to `grow-only', this resets the tool-bar's height to the minimum | |
5187 | height needed); if `recenter-redisplay' has the special value `tty', | |
53524d93 | 5188 | then only tty frames are redrawn. |
7d1d98ee | 5189 | |
fdb82f93 PJ |
5190 | Just C-u as prefix means put point in the center of the window |
5191 | and redisplay normally--don't erase and redraw the frame. */) | |
5842a27b | 5192 | (register Lisp_Object arg) |
7ab12479 | 5193 | { |
6df47b59 | 5194 | struct window *w = XWINDOW (selected_window); |
d3d50620 | 5195 | struct buffer *buf = XBUFFER (w->buffer); |
478292ed | 5196 | struct buffer *obuf = current_buffer; |
6df47b59 | 5197 | int center_p = 0; |
d311d28c | 5198 | ptrdiff_t charpos, bytepos; |
71f02bc5 | 5199 | EMACS_INT iarg IF_LINT (= 0); |
f6b43440 | 5200 | int this_scroll_margin; |
7ab12479 | 5201 | |
0fa5d25b RS |
5202 | /* If redisplay is suppressed due to an error, try again. */ |
5203 | obuf->display_error_modiff = 0; | |
5204 | ||
413430c5 | 5205 | if (NILP (arg)) |
7ab12479 | 5206 | { |
666e158e MB |
5207 | if (!NILP (Vrecenter_redisplay) |
5208 | && (!EQ (Vrecenter_redisplay, Qtty) | |
5209 | || !NILP (Ftty_type (selected_frame)))) | |
5210 | { | |
ebfa62c0 | 5211 | ptrdiff_t i; |
f02d6d5c | 5212 | |
666e158e MB |
5213 | /* Invalidate pixel data calculated for all compositions. */ |
5214 | for (i = 0; i < n_compositions; i++) | |
5215 | composition_table[i]->font = NULL; | |
7ab12479 | 5216 | |
666e158e MB |
5217 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5218 | ||
5219 | Fredraw_frame (WINDOW_FRAME (w)); | |
5220 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
5221 | } | |
7d1d98ee | 5222 | |
6df47b59 | 5223 | center_p = 1; |
7ab12479 | 5224 | } |
413430c5 | 5225 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5226 | center_p = 1; |
7ab12479 JB |
5227 | else |
5228 | { | |
413430c5 | 5229 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5230 | CHECK_NUMBER (arg); |
ae12ecd7 | 5231 | iarg = XINT (arg); |
7ab12479 JB |
5232 | } |
5233 | ||
478292ed | 5234 | set_buffer_internal (buf); |
7ab12479 | 5235 | |
f6b43440 RS |
5236 | /* Do this after making BUF current |
5237 | in case scroll_margin is buffer-local. */ | |
71f02bc5 | 5238 | this_scroll_margin = |
d3d50620 | 5239 | max (0, min (scroll_margin, XFASTINT (w->total_lines) / 4)); |
f6b43440 | 5240 | |
521b203e | 5241 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5242 | have variable-height lines and centering point on the basis of |
5243 | line counts would lead to strange effects. */ | |
d3d50620 | 5244 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5245 | { |
6df47b59 GM |
5246 | if (center_p) |
5247 | { | |
521b203e GM |
5248 | struct it it; |
5249 | struct text_pos pt; | |
57b3e30b | 5250 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5251 | |
521b203e GM |
5252 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5253 | start_display (&it, w, pt); | |
f204989e | 5254 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5255 | charpos = IT_CHARPOS (it); |
5256 | bytepos = IT_BYTEPOS (it); | |
35928349 | 5257 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5258 | } |
f6b43440 | 5259 | else if (iarg < 0) |
6df47b59 | 5260 | { |
521b203e GM |
5261 | struct it it; |
5262 | struct text_pos pt; | |
5895d7b9 | 5263 | ptrdiff_t nlines = min (PTRDIFF_MAX, -iarg); |
f204989e KS |
5264 | int extra_line_spacing; |
5265 | int h = window_box_height (w); | |
57b3e30b | 5266 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5267 | |
f6b43440 RS |
5268 | iarg = - max (-iarg, this_scroll_margin); |
5269 | ||
521b203e GM |
5270 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5271 | start_display (&it, w, pt); | |
f204989e KS |
5272 | |
5273 | /* Be sure we have the exact height of the full line containing PT. */ | |
e4cc2dfc | 5274 | move_it_by_lines (&it, 0); |
521b203e | 5275 | |
d466fa4d | 5276 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5277 | height minus what's displayed in the line containing PT, |
5278 | and the lines below. */ | |
f204989e KS |
5279 | it.current_y = 0; |
5280 | it.vpos = 0; | |
e4cc2dfc | 5281 | move_it_by_lines (&it, nlines); |
d466fa4d | 5282 | |
f204989e KS |
5283 | if (it.vpos == nlines) |
5284 | h -= it.current_y; | |
5285 | else | |
5286 | { | |
5287 | /* Last line has no newline */ | |
5288 | h -= line_bottom_y (&it); | |
5289 | it.vpos++; | |
5290 | } | |
5291 | ||
5292 | /* Don't reserve space for extra line spacing of last line. */ | |
5293 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5294 | |
5295 | /* If we can't move down NLINES lines because we hit | |
5296 | the end of the buffer, count in some empty lines. */ | |
5297 | if (it.vpos < nlines) | |
f204989e KS |
5298 | { |
5299 | nlines -= it.vpos; | |
5300 | extra_line_spacing = it.extra_line_spacing; | |
5301 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5302 | } | |
5303 | if (h <= 0) | |
57b3e30b | 5304 | { |
35928349 | 5305 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
5306 | return Qnil; |
5307 | } | |
201c831a | 5308 | |
f204989e | 5309 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5310 | start_display (&it, w, pt); |
f204989e KS |
5311 | it.current_y = 0; |
5312 | move_it_vertically_backward (&it, h); | |
5313 | ||
5314 | /* If extra line spacing is present, we may move too far | |
5315 | back. This causes the last line to be only partially | |
5316 | visible (which triggers redisplay to recenter that line | |
5317 | in the middle), so move forward. | |
5318 | But ignore extra line spacing on last line, as it is not | |
5319 | considered to be part of the visible height of the line. | |
5320 | */ | |
5321 | h += extra_line_spacing; | |
5322 | while (-it.current_y > h) | |
e4cc2dfc | 5323 | move_it_by_lines (&it, 1); |
f204989e | 5324 | |
521b203e GM |
5325 | charpos = IT_CHARPOS (it); |
5326 | bytepos = IT_BYTEPOS (it); | |
57b3e30b | 5327 | |
35928349 | 5328 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5329 | } |
521b203e GM |
5330 | else |
5331 | { | |
5332 | struct position pos; | |
f6b43440 | 5333 | |
f6b43440 RS |
5334 | iarg = max (iarg, this_scroll_margin); |
5335 | ||
5336 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5337 | charpos = pos.bufpos; |
5338 | bytepos = pos.bytepos; | |
5339 | } | |
5340 | } | |
5341 | else | |
5342 | { | |
5343 | struct position pos; | |
5344 | int ht = window_internal_height (w); | |
5345 | ||
5346 | if (center_p) | |
a4429c5b | 5347 | iarg = ht / 2; |
f567c488 KS |
5348 | else if (iarg < 0) |
5349 | iarg += ht; | |
f6b43440 RS |
5350 | |
5351 | /* Don't let it get into the margin at either top or bottom. */ | |
5352 | iarg = max (iarg, this_scroll_margin); | |
5353 | iarg = min (iarg, ht - this_scroll_margin - 1); | |
177c0ea7 | 5354 | |
f6b43440 | 5355 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
5356 | charpos = pos.bufpos; |
5357 | bytepos = pos.bytepos; | |
5358 | } | |
5359 | ||
5360 | /* Set the new window start. */ | |
d3d50620 | 5361 | set_marker_both (w->start, w->buffer, charpos, bytepos); |
e8c17b81 | 5362 | wset_window_end_valid (w, Qnil); |
177c0ea7 | 5363 | |
c98ff5dd | 5364 | w->optional_new_start = 1; |
95605b1b | 5365 | |
c98ff5dd DA |
5366 | w->start_at_line_beg = (bytepos == BEGV_BYTE || |
5367 | FETCH_BYTE (bytepos - 1) == '\n'); | |
177c0ea7 | 5368 | |
478292ed | 5369 | set_buffer_internal (obuf); |
7ab12479 JB |
5370 | return Qnil; |
5371 | } | |
b7617575 | 5372 | |
81fe0836 | 5373 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5374 | 0, 1, 0, |
5375 | doc: /* Return the height in lines of the text display area of WINDOW. | |
52162052 | 5376 | WINDOW must be a live window and defaults to the selected one. |
8fef9de1 | 5377 | |
105216ed CY |
5378 | The returned height does not include the mode line, any header line, |
5379 | nor any partial-height lines at the bottom of the text area. */) | |
5842a27b | 5380 | (Lisp_Object window) |
81fe0836 | 5381 | { |
52162052 | 5382 | struct window *w = decode_live_window (window); |
81fe0836 | 5383 | int pixel_height = window_box_height (w); |
d3d50620 | 5384 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5385 | return make_number (line_height); |
5386 | } | |
5387 | ||
5388 | ||
7ab12479 JB |
5389 | \f |
5390 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5391 | 1, 1, "P", |
5392 | doc: /* Position point relative to window. | |
87e68db4 JB |
5393 | ARG nil means position point at center of window. |
5394 | Else, ARG specifies vertical position within the window; | |
fdb82f93 | 5395 | zero means top of window, negative means relative to bottom of window. */) |
5842a27b | 5396 | (Lisp_Object arg) |
7ab12479 | 5397 | { |
b7617575 GM |
5398 | struct window *w = XWINDOW (selected_window); |
5399 | int lines, start; | |
540b6aa0 | 5400 | Lisp_Object window; |
f6b43440 RS |
5401 | #if 0 |
5402 | int this_scroll_margin; | |
5403 | #endif | |
7ab12479 | 5404 | |
d3d50620 DA |
5405 | if (!(BUFFERP (w->buffer) |
5406 | && XBUFFER (w->buffer) == current_buffer)) | |
794b75c7 SM |
5407 | /* This test is needed to make sure PT/PT_BYTE make sense in w->buffer |
5408 | when passed below to set_marker_both. */ | |
5409 | error ("move-to-window-line called from unrelated buffer"); | |
6dc1d2d3 | 5410 | |
b7617575 | 5411 | window = selected_window; |
d3d50620 | 5412 | start = marker_position (w->start); |
7ab12479 JB |
5413 | if (start < BEGV || start > ZV) |
5414 | { | |
b7617575 | 5415 | int height = window_internal_height (w); |
cd2be1dd | 5416 | Fvertical_motion (make_number (- (height / 2)), window); |
d3d50620 | 5417 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
c98ff5dd DA |
5418 | w->start_at_line_beg = !NILP (Fbolp ()); |
5419 | w->force_start = 1; | |
7ab12479 JB |
5420 | } |
5421 | else | |
d3d50620 | 5422 | Fgoto_char (w->start); |
7ab12479 | 5423 | |
b7617575 | 5424 | lines = displayed_window_lines (w); |
f6b43440 RS |
5425 | |
5426 | #if 0 | |
71f02bc5 | 5427 | this_scroll_margin = max (0, min (scroll_margin, lines / 4)); |
f6b43440 RS |
5428 | #endif |
5429 | ||
b7617575 GM |
5430 | if (NILP (arg)) |
5431 | XSETFASTINT (arg, lines / 2); | |
5432 | else | |
5433 | { | |
71f02bc5 | 5434 | EMACS_INT iarg = XINT (Fprefix_numeric_value (arg)); |
f6b43440 RS |
5435 | |
5436 | if (iarg < 0) | |
5437 | iarg = iarg + lines; | |
5438 | ||
5439 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5440 | to a place inside the scroll margins (which would cause the | |
5441 | next redisplay to scroll). I wrote this code, but then concluded | |
5442 | it is probably better not to install it. However, it is here | |
5443 | inside #if 0 so as not to lose it. -- rms. */ | |
5444 | ||
5445 | /* Don't let it get into the margin at either top or bottom. */ | |
5446 | iarg = max (iarg, this_scroll_margin); | |
5447 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5448 | #endif | |
5449 | ||
5450 | arg = make_number (iarg); | |
b7617575 GM |
5451 | } |
5452 | ||
c8bc6f65 | 5453 | /* Skip past a partially visible first line. */ |
163784df | 5454 | if (w->vscroll) |
163784df MB |
5455 | XSETINT (arg, XINT (arg) + 1); |
5456 | ||
540b6aa0 | 5457 | return Fvertical_motion (arg, window); |
7ab12479 | 5458 | } |
5500c422 GM |
5459 | |
5460 | ||
7ab12479 | 5461 | \f |
5500c422 GM |
5462 | /*********************************************************************** |
5463 | Window Configuration | |
5464 | ***********************************************************************/ | |
5465 | ||
7ab12479 JB |
5466 | struct save_window_data |
5467 | { | |
b102ceb1 | 5468 | struct vectorlike_header header; |
bdc727bf | 5469 | Lisp_Object selected_frame; |
7ab12479 JB |
5470 | Lisp_Object current_window; |
5471 | Lisp_Object current_buffer; | |
5472 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5473 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5474 | Lisp_Object root_window; |
bdc727bf | 5475 | Lisp_Object focus_frame; |
cbff28e8 RS |
5476 | /* A vector, each of whose elements is a struct saved_window |
5477 | for one window. */ | |
7ab12479 | 5478 | Lisp_Object saved_windows; |
b05b4e27 SM |
5479 | |
5480 | /* All fields above are traced by the GC. | |
5481 | From `fame-cols' down, the fields are ignored by the GC. */ | |
5482 | ||
5483 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
5484 | int frame_tool_bar_lines; | |
7ab12479 | 5485 | }; |
ff06df24 | 5486 | |
cbff28e8 | 5487 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 5488 | struct saved_window |
ea68264b | 5489 | { |
b102ceb1 | 5490 | struct vectorlike_header header; |
496e208e | 5491 | |
28545e04 | 5492 | Lisp_Object window, buffer, start, pointm, mark; |
949cf20f | 5493 | Lisp_Object left_col, top_line, total_cols, total_lines; |
496e208e | 5494 | Lisp_Object normal_cols, normal_lines; |
949cf20f | 5495 | Lisp_Object hscroll, min_hscroll; |
ea68264b GM |
5496 | Lisp_Object parent, prev; |
5497 | Lisp_Object start_at_line_beg; | |
5498 | Lisp_Object display_table; | |
949cf20f KS |
5499 | Lisp_Object left_margin_cols, right_margin_cols; |
5500 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
562dd5e9 | 5501 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type, dedicated; |
b6f67890 | 5502 | Lisp_Object combination_limit, window_parameters; |
ea68264b GM |
5503 | }; |
5504 | ||
7ab12479 JB |
5505 | #define SAVED_WINDOW_N(swv,n) \ |
5506 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
5507 | ||
5508 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 | 5509 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5842a27b | 5510 | (Lisp_Object object) |
7ab12479 | 5511 | { |
6ad0381c | 5512 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
5513 | } |
5514 | ||
3f8ab7bd | 5515 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 | 5516 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5842a27b | 5517 | (Lisp_Object config) |
3f8ab7bd RS |
5518 | { |
5519 | register struct save_window_data *data; | |
5520 | struct Lisp_Vector *saved_windows; | |
5521 | ||
663fbbba | 5522 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
5523 | |
5524 | data = (struct save_window_data *) XVECTOR (config); | |
5525 | saved_windows = XVECTOR (data->saved_windows); | |
d3d50620 | 5526 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
3f8ab7bd RS |
5527 | } |
5528 | ||
a7ca3326 | 5529 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
5530 | Sset_window_configuration, 1, 1, 0, |
5531 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
5532 | CONFIGURATION must be a value previously returned | |
5533 | by `current-window-configuration' (which see). | |
5534 | If CONFIGURATION was made from a frame that is now deleted, | |
5535 | only frame-independent values can be restored. In this case, | |
5536 | the return value is nil. Otherwise the value is t. */) | |
5842a27b | 5537 | (Lisp_Object configuration) |
7ab12479 | 5538 | { |
7ab12479 JB |
5539 | register struct save_window_data *data; |
5540 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 5541 | Lisp_Object new_current_buffer; |
fd482be5 | 5542 | Lisp_Object frame; |
44fa5b1e | 5543 | FRAME_PTR f; |
d311d28c | 5544 | ptrdiff_t old_point = -1; |
7ab12479 | 5545 | |
663fbbba | 5546 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 5547 | |
2f83aebe | 5548 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
5549 | saved_windows = XVECTOR (data->saved_windows); |
5550 | ||
7ab12479 | 5551 | new_current_buffer = data->current_buffer; |
e578f381 | 5552 | if (!BUFFER_LIVE_P (XBUFFER (new_current_buffer))) |
7ab12479 | 5553 | new_current_buffer = Qnil; |
72695e47 | 5554 | else |
73cadfc1 DK |
5555 | { |
5556 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
5557 | /* The code further down "preserves point" by saving here PT in |
5558 | old_point and then setting it later back into PT. When the | |
5559 | current-selected-window and the final-selected-window both show | |
5560 | the current buffer, this suffers from the problem that the | |
5561 | current PT is the window-point of the current-selected-window, | |
5562 | while the final PT is the point of the final-selected-window, so | |
5563 | this copy from one PT to the other would end up moving the | |
5564 | window-point of the final-selected-window to the window-point of | |
5565 | the current-selected-window. So we have to be careful which | |
5566 | point of the current-buffer we copy into old_point. */ | |
d3d50620 | 5567 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) |
e67a1dea | 5568 | && WINDOWP (selected_window) |
d3d50620 | 5569 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) |
e67a1dea | 5570 | && !EQ (selected_window, data->current_window)) |
d3d50620 | 5571 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; |
e67a1dea SM |
5572 | else |
5573 | old_point = PT; | |
73cadfc1 | 5574 | else |
203eb0aa SM |
5575 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
5576 | point in new_current_buffer as of the last time this buffer was | |
5577 | used. This can be non-deterministic since it can be changed by | |
5578 | things like jit-lock by mere temporary selection of some random | |
5579 | window that happens to show this buffer. | |
5580 | So if possible we want this arbitrary choice of "which point" to | |
5581 | be the one from the to-be-selected-window so as to prevent this | |
5582 | window's cursor from being copied from another window. */ | |
d3d50620 | 5583 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) |
203eb0aa SM |
5584 | /* If current_window = selected_window, its point is in BUF_PT. */ |
5585 | && !EQ (selected_window, data->current_window)) | |
d3d50620 | 5586 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; |
203eb0aa SM |
5587 | else |
5588 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 5589 | } |
7ab12479 | 5590 | |
d3d50620 | 5591 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
fd482be5 | 5592 | f = XFRAME (frame); |
177c0ea7 | 5593 | |
fd482be5 JB |
5594 | /* If f is a dead frame, don't bother rebuilding its window tree. |
5595 | However, there is other stuff we should still try to do below. */ | |
5596 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 5597 | { |
6198ccd0 MR |
5598 | Lisp_Object window; |
5599 | Lisp_Object dead_windows = Qnil; | |
6a6ee00d | 5600 | register Lisp_Object tem, par, pers; |
fd482be5 JB |
5601 | register struct window *w; |
5602 | register struct saved_window *p; | |
5500c422 GM |
5603 | struct window *root_window; |
5604 | struct window **leaf_windows; | |
5605 | int n_leaf_windows; | |
71f02bc5 PE |
5606 | ptrdiff_t k; |
5607 | int i, n; | |
fd482be5 JB |
5608 | |
5609 | /* If the frame has been resized since this window configuration was | |
5610 | made, we change the frame to the size specified in the | |
5611 | configuration, restore the configuration, and then resize it | |
5612 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
5613 | int previous_frame_lines = FRAME_LINES (f); |
5614 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 5615 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 5616 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 5617 | |
37b9743e MR |
5618 | /* Don't do this within the main loop below: This may call Lisp |
5619 | code and is thus potentially unsafe while input is blocked. */ | |
5620 | for (k = 0; k < saved_windows->header.size; k++) | |
5621 | { | |
5622 | p = SAVED_WINDOW_N (saved_windows, k); | |
5623 | window = p->window; | |
5624 | w = XWINDOW (window); | |
5625 | if (!NILP (w->buffer) | |
5626 | && !EQ (w->buffer, p->buffer) | |
e578f381 | 5627 | && BUFFER_LIVE_P (XBUFFER (p->buffer))) |
37b9743e MR |
5628 | /* If a window we restore gets another buffer, record the |
5629 | window's old buffer. */ | |
5630 | call1 (Qrecord_window_buffer, window); | |
5631 | } | |
5632 | ||
d2b35234 RS |
5633 | /* The mouse highlighting code could get screwed up |
5634 | if it runs during this. */ | |
5635 | BLOCK_INPUT; | |
5636 | ||
b05b4e27 SM |
5637 | if (data->frame_lines != previous_frame_lines |
5638 | || data->frame_cols != previous_frame_cols) | |
5639 | change_frame_size (f, data->frame_lines, | |
5640 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 5641 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 5642 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 5643 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
5644 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
5645 | make_number (0)); | |
4314246f | 5646 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 5647 | if (data->frame_tool_bar_lines |
9ea173e8 | 5648 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
5649 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
5650 | make_number (0)); | |
4314246f | 5651 | #endif |
217f2871 | 5652 | #endif |
fd482be5 | 5653 | |
a46c0153 RS |
5654 | /* "Swap out" point from the selected window's buffer |
5655 | into the window itself. (Normally the pointm of the selected | |
5656 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
5657 | restoring the window contents, and prevent it from |
5658 | being done later on when we select a new window. */ | |
d3d50620 | 5659 | if (! NILP (XWINDOW (selected_window)->buffer)) |
596ae0cf RS |
5660 | { |
5661 | w = XWINDOW (selected_window); | |
d3d50620 DA |
5662 | set_marker_both (w->pointm, |
5663 | w->buffer, | |
5664 | BUF_PT (XBUFFER (w->buffer)), | |
5665 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
596ae0cf RS |
5666 | } |
5667 | ||
fd482be5 | 5668 | windows_or_buffers_changed++; |
29aeee73 | 5669 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 5670 | |
5500c422 | 5671 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 5672 | is a serious redisplay flickering problem. What we would |
5500c422 | 5673 | really like to do is to free only those matrices not reused |
9d14503e | 5674 | below. */ |
5500c422 | 5675 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); |
38182d90 PE |
5676 | leaf_windows = alloca (count_windows (root_window) |
5677 | * sizeof *leaf_windows); | |
5500c422 GM |
5678 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); |
5679 | ||
fd482be5 JB |
5680 | /* Kludge Alert! |
5681 | Mark all windows now on frame as "deleted". | |
5682 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 5683 | |
fd482be5 JB |
5684 | Save their current buffers in their height fields, since we may |
5685 | need it later, if a buffer saved in the configuration is now | |
5686 | dead. */ | |
be7f5545 | 5687 | delete_all_child_windows (FRAME_ROOT_WINDOW (f)); |
fd482be5 | 5688 | |
eab3844f | 5689 | for (k = 0; k < saved_windows->header.size; k++) |
fd482be5 JB |
5690 | { |
5691 | p = SAVED_WINDOW_N (saved_windows, k); | |
6198ccd0 MR |
5692 | window = p->window; |
5693 | w = XWINDOW (window); | |
e8c17b81 | 5694 | wset_next (w, Qnil); |
7ab12479 | 5695 | |
fd482be5 | 5696 | if (!NILP (p->parent)) |
e8c17b81 PE |
5697 | wset_parent |
5698 | (w, SAVED_WINDOW_N (saved_windows, XFASTINT (p->parent))->window); | |
fd482be5 | 5699 | else |
e8c17b81 | 5700 | wset_parent (w, Qnil); |
7ab12479 | 5701 | |
fd482be5 | 5702 | if (!NILP (p->prev)) |
7ab12479 | 5703 | { |
e8c17b81 PE |
5704 | wset_prev |
5705 | (w, SAVED_WINDOW_N (saved_windows, XFASTINT (p->prev))->window); | |
5706 | wset_next (XWINDOW (w->prev), p->window); | |
fd482be5 JB |
5707 | } |
5708 | else | |
5709 | { | |
e8c17b81 | 5710 | wset_prev (w, Qnil); |
d3d50620 | 5711 | if (!NILP (w->parent)) |
fd482be5 | 5712 | { |
d3d50620 | 5713 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 | 5714 | { |
e8c17b81 PE |
5715 | wset_vchild (XWINDOW (w->parent), p->window); |
5716 | wset_hchild (XWINDOW (w->parent), Qnil); | |
fd482be5 JB |
5717 | } |
5718 | else | |
5719 | { | |
e8c17b81 PE |
5720 | wset_hchild (XWINDOW (w->parent), p->window); |
5721 | wset_vchild (XWINDOW (w->parent), Qnil); | |
fd482be5 JB |
5722 | } |
5723 | } | |
5724 | } | |
5725 | ||
5726 | /* If we squirreled away the buffer in the window's height, | |
5727 | restore it now. */ | |
d3d50620 | 5728 | if (BUFFERP (w->total_lines)) |
e8c17b81 PE |
5729 | wset_buffer (w, w->total_lines); |
5730 | wset_left_col (w, p->left_col); | |
5731 | wset_top_line (w, p->top_line); | |
5732 | wset_total_cols (w, p->total_cols); | |
5733 | wset_total_lines (w, p->total_lines); | |
5734 | wset_normal_cols (w, p->normal_cols); | |
5735 | wset_normal_lines (w, p->normal_lines); | |
80b00b08 DA |
5736 | w->hscroll = XFASTINT (p->hscroll); |
5737 | w->min_hscroll = XFASTINT (p->min_hscroll); | |
e8c17b81 PE |
5738 | wset_display_table (w, p->display_table); |
5739 | wset_left_margin_cols (w, p->left_margin_cols); | |
5740 | wset_right_margin_cols (w, p->right_margin_cols); | |
5741 | wset_left_fringe_width (w, p->left_fringe_width); | |
5742 | wset_right_fringe_width (w, p->right_fringe_width); | |
2af3565e | 5743 | w->fringes_outside_margins = !NILP (p->fringes_outside_margins); |
e8c17b81 PE |
5744 | wset_scroll_bar_width (w, p->scroll_bar_width); |
5745 | wset_vertical_scroll_bar_type (w, p->vertical_scroll_bar_type); | |
5746 | wset_dedicated (w, p->dedicated); | |
5747 | wset_combination_limit (w, p->combination_limit); | |
6a6ee00d MR |
5748 | /* Restore any window parameters that have been saved. |
5749 | Parameters that have not been saved are left alone. */ | |
5750 | for (tem = p->window_parameters; CONSP (tem); tem = XCDR (tem)) | |
5751 | { | |
5752 | pers = XCAR (tem); | |
5753 | if (CONSP (pers)) | |
5754 | { | |
5755 | if (NILP (XCDR (pers))) | |
5756 | { | |
d3d50620 | 5757 | par = Fassq (XCAR (pers), w->window_parameters); |
6a6ee00d MR |
5758 | if (CONSP (par) && !NILP (XCDR (par))) |
5759 | /* Reset a parameter to nil if and only if it | |
5760 | has a non-nil association. Don't make new | |
5761 | associations. */ | |
5762 | Fsetcdr (par, Qnil); | |
5763 | } | |
5764 | else | |
5765 | /* Always restore a non-nil value. */ | |
5766 | Fset_window_parameter (window, XCAR (pers), XCDR (pers)); | |
5767 | } | |
5768 | } | |
5769 | ||
80b00b08 DA |
5770 | w->last_modified = 0; |
5771 | w->last_overlay_modified = 0; | |
fd482be5 JB |
5772 | |
5773 | /* Reinstall the saved buffer and pointers into it. */ | |
5774 | if (NILP (p->buffer)) | |
6198ccd0 | 5775 | /* An internal window. */ |
e8c17b81 | 5776 | wset_buffer (w, p->buffer); |
e578f381 | 5777 | else if (BUFFER_LIVE_P (XBUFFER (p->buffer))) |
6198ccd0 MR |
5778 | /* If saved buffer is alive, install it. */ |
5779 | { | |
e8c17b81 PE |
5780 | wset_buffer (w, p->buffer); |
5781 | w->start_at_line_beg = !NILP (p->start_at_line_beg); | |
5782 | set_marker_restricted (w->start, p->start, w->buffer); | |
5783 | set_marker_restricted (w->pointm, p->pointm, | |
5784 | w->buffer); | |
5785 | Fset_marker (BVAR (XBUFFER (w->buffer), mark), | |
5786 | p->mark, w->buffer); | |
5787 | ||
5788 | /* As documented in Fcurrent_window_configuration, don't | |
5789 | restore the location of point in the buffer which was | |
5790 | current when the window configuration was recorded. */ | |
5791 | if (!EQ (p->buffer, new_current_buffer) | |
5792 | && XBUFFER (p->buffer) == current_buffer) | |
5793 | Fgoto_char (w->pointm); | |
077288cf | 5794 | } |
d3d50620 | 5795 | else if (!NILP (w->buffer) |
e578f381 | 5796 | && BUFFER_LIVE_P (XBUFFER (w->buffer))) |
077288cf DA |
5797 | /* Keep window's old buffer; make sure the markers are |
5798 | real. */ | |
5799 | { | |
5800 | /* Set window markers at start of visible range. */ | |
d3d50620 DA |
5801 | if (XMARKER (w->start)->buffer == 0) |
5802 | set_marker_restricted (w->start, make_number (0), | |
5803 | w->buffer); | |
5804 | if (XMARKER (w->pointm)->buffer == 0) | |
f00af5b1 | 5805 | set_marker_restricted_both |
d3d50620 DA |
5806 | (w->pointm, w->buffer, |
5807 | BUF_PT (XBUFFER (w->buffer)), | |
5808 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
077288cf DA |
5809 | w->start_at_line_beg = 1; |
5810 | } | |
fd482be5 | 5811 | else |
6198ccd0 | 5812 | /* Window has no live buffer, get one. */ |
fd482be5 | 5813 | { |
6198ccd0 MR |
5814 | /* Get the buffer via other_buffer_safely in order to |
5815 | avoid showing an unimportant buffer and, if necessary, to | |
5816 | recreate *scratch* in the course (part of Juanma's bs-show | |
5817 | scenario from March 2011). */ | |
e8c17b81 | 5818 | wset_buffer (w, other_buffer_safely (Fcurrent_buffer ())); |
6198ccd0 MR |
5819 | /* This will set the markers to beginning of visible |
5820 | range. */ | |
d3d50620 DA |
5821 | set_marker_restricted (w->start, |
5822 | make_number (0), w->buffer); | |
5823 | set_marker_restricted (w->pointm, | |
5824 | make_number (0), w->buffer); | |
c98ff5dd | 5825 | w->start_at_line_beg = 1; |
d3d50620 | 5826 | if (!NILP (w->dedicated)) |
6198ccd0 MR |
5827 | /* Record this window as dead. */ |
5828 | dead_windows = Fcons (window, dead_windows); | |
5829 | /* Make sure window is no more dedicated. */ | |
e8c17b81 | 5830 | wset_dedicated (w, Qnil); |
7ab12479 JB |
5831 | } |
5832 | } | |
9ace597f | 5833 | |
f00af5b1 | 5834 | fset_root_window (f, data->root_window); |
a46c0153 RS |
5835 | /* Arrange *not* to restore point in the buffer that was |
5836 | current when the window configuration was saved. */ | |
d3d50620 DA |
5837 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
5838 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 5839 | make_number (old_point), |
d3d50620 | 5840 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 5841 | |
6198ccd0 MR |
5842 | /* In the following call to `select-window', prevent "swapping out |
5843 | point" in the old selected window using the buffer that has | |
5844 | been restored into it. We already swapped out that point from | |
5845 | that window's old buffer. */ | |
e6b84b30 | 5846 | select_window (data->current_window, Qnil, 1); |
d3d50620 | 5847 | BVAR (XBUFFER (XWINDOW (selected_window)->buffer), last_selected_window) |
396a830c | 5848 | = selected_window; |
7ab12479 | 5849 | |
db269683 | 5850 | if (NILP (data->focus_frame) |
017b2bad | 5851 | || (FRAMEP (data->focus_frame) |
db269683 JB |
5852 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
5853 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 5854 | |
fd482be5 | 5855 | /* Set the screen height to the value it had before this function. */ |
949cf20f KS |
5856 | if (previous_frame_lines != FRAME_LINES (f) |
5857 | || previous_frame_cols != FRAME_COLS (f)) | |
5858 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 5859 | 0, 0, 0); |
e3678b64 | 5860 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 5861 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
5862 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
5863 | make_number (0)); | |
4314246f | 5864 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5865 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
5866 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
5867 | make_number (0)); | |
4314246f | 5868 | #endif |
217f2871 | 5869 | #endif |
d2b35234 | 5870 | |
5500c422 | 5871 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
5872 | for (i = n = 0; i < n_leaf_windows; ++i) |
5873 | { | |
d3d50620 | 5874 | if (NILP (leaf_windows[i]->buffer)) |
c4280705 GM |
5875 | { |
5876 | /* Assert it's not reused as a combination. */ | |
d3d50620 DA |
5877 | eassert (NILP (leaf_windows[i]->hchild) |
5878 | && NILP (leaf_windows[i]->vchild)); | |
c4280705 | 5879 | free_window_matrices (leaf_windows[i]); |
c4280705 | 5880 | } |
d3d50620 | 5881 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) |
c4280705 GM |
5882 | ++n; |
5883 | } | |
177c0ea7 | 5884 | |
5500c422 | 5885 | adjust_glyphs (f); |
d2b35234 | 5886 | UNBLOCK_INPUT; |
756b6edc | 5887 | |
6198ccd0 MR |
5888 | /* Scan dead buffer windows. */ |
5889 | for (; CONSP (dead_windows); dead_windows = XCDR (dead_windows)) | |
5890 | { | |
5891 | window = XCAR (dead_windows); | |
5892 | if (WINDOW_LIVE_P (window) && !EQ (window, FRAME_ROOT_WINDOW (f))) | |
5893 | delete_deletable_window (window); | |
5894 | } | |
5895 | ||
478292ed RS |
5896 | /* Fselect_window will have made f the selected frame, so we |
5897 | reselect the proper frame here. Fhandle_switch_frame will change the | |
5898 | selected window too, but that doesn't make the call to | |
5899 | Fselect_window above totally superfluous; it still sets f's | |
5900 | selected window. */ | |
5901 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
c6932ecd | 5902 | do_switch_frame (data->selected_frame, 0, 0, Qnil); |
478292ed | 5903 | |
eeca6f6f | 5904 | run_window_configuration_change_hook (f); |
478292ed | 5905 | } |
bdc727bf JB |
5906 | |
5907 | if (!NILP (new_current_buffer)) | |
c4b6914d MR |
5908 | { |
5909 | Fset_buffer (new_current_buffer); | |
5910 | /* If the new current buffer doesn't appear in the selected | |
5911 | window, go to its old point (see bug#12208). */ | |
5912 | if (!EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) | |
5913 | Fgoto_char (make_number (old_point)); | |
5914 | } | |
bdc727bf | 5915 | |
478292ed | 5916 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 5917 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 5918 | |
3f8ab7bd | 5919 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
5920 | } |
5921 | ||
562dd5e9 | 5922 | |
be7f5545 MR |
5923 | /* Recursively delete all child windows reachable via the next, vchild, |
5924 | and hchild slots of WINDOW. */ | |
fd482be5 | 5925 | void |
be7f5545 | 5926 | delete_all_child_windows (Lisp_Object window) |
7ab12479 | 5927 | { |
fa8a67e6 MR |
5928 | register struct window *w; |
5929 | ||
5930 | w = XWINDOW (window); | |
5931 | ||
d3d50620 | 5932 | if (!NILP (w->next)) |
fa8a67e6 | 5933 | /* Delete WINDOW's siblings (we traverse postorderly). */ |
d3d50620 | 5934 | delete_all_child_windows (w->next); |
605be8af | 5935 | |
e8c17b81 PE |
5936 | /* See Fset_window_configuration for excuse. */ |
5937 | wset_total_lines (w, w->buffer); | |
605be8af | 5938 | |
d3d50620 | 5939 | if (!NILP (w->vchild)) |
fa8a67e6 | 5940 | { |
d3d50620 | 5941 | delete_all_child_windows (w->vchild); |
e8c17b81 | 5942 | wset_vchild (w, Qnil); |
fa8a67e6 | 5943 | } |
d3d50620 | 5944 | else if (!NILP (w->hchild)) |
fa8a67e6 | 5945 | { |
d3d50620 | 5946 | delete_all_child_windows (w->hchild); |
e8c17b81 | 5947 | wset_hchild (w, Qnil); |
fa8a67e6 | 5948 | } |
d3d50620 | 5949 | else if (!NILP (w->buffer)) |
fa8a67e6 MR |
5950 | { |
5951 | unshow_buffer (w); | |
d3d50620 DA |
5952 | unchain_marker (XMARKER (w->pointm)); |
5953 | unchain_marker (XMARKER (w->start)); | |
e8c17b81 | 5954 | wset_buffer (w, Qnil); |
fa8a67e6 | 5955 | } |
acf70840 GM |
5956 | |
5957 | Vwindow_list = Qnil; | |
7ab12479 JB |
5958 | } |
5959 | \f | |
5960 | static int | |
971de7fb | 5961 | count_windows (register struct window *window) |
7ab12479 JB |
5962 | { |
5963 | register int count = 1; | |
d3d50620 DA |
5964 | if (!NILP (window->next)) |
5965 | count += count_windows (XWINDOW (window->next)); | |
5966 | if (!NILP (window->vchild)) | |
5967 | count += count_windows (XWINDOW (window->vchild)); | |
5968 | if (!NILP (window->hchild)) | |
5969 | count += count_windows (XWINDOW (window->hchild)); | |
7ab12479 JB |
5970 | return count; |
5971 | } | |
5972 | ||
5500c422 | 5973 | |
177c0ea7 | 5974 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 | 5975 | Value is last index + 1. */ |
5500c422 | 5976 | static int |
971de7fb | 5977 | get_leaf_windows (struct window *w, struct window **flat, int i) |
5500c422 GM |
5978 | { |
5979 | while (w) | |
5980 | { | |
d3d50620 DA |
5981 | if (!NILP (w->hchild)) |
5982 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
5983 | else if (!NILP (w->vchild)) | |
5984 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 5985 | else |
5500c422 GM |
5986 | flat[i++] = w; |
5987 | ||
d3d50620 | 5988 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
5500c422 GM |
5989 | } |
5990 | ||
5991 | return i; | |
5992 | } | |
5993 | ||
5994 | ||
5995 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
c80e3b4a | 5996 | null if W's current matrix is invalid, so that no meaningful glyph |
5500c422 | 5997 | can be returned. */ |
5500c422 | 5998 | struct glyph * |
971de7fb | 5999 | get_phys_cursor_glyph (struct window *w) |
5500c422 GM |
6000 | { |
6001 | struct glyph_row *row; | |
6002 | struct glyph *glyph; | |
f8fe6f96 | 6003 | int hpos = w->phys_cursor.hpos; |
5500c422 | 6004 | |
f8fe6f96 EZ |
6005 | if (!(w->phys_cursor.vpos >= 0 |
6006 | && w->phys_cursor.vpos < w->current_matrix->nrows)) | |
6007 | return NULL; | |
6008 | ||
6009 | row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos); | |
6010 | if (!row->enabled_p) | |
6011 | return NULL; | |
6012 | ||
80b00b08 | 6013 | if (w->hscroll) |
f8fe6f96 EZ |
6014 | { |
6015 | /* When the window is hscrolled, cursor hpos can legitimately be | |
6016 | out of bounds, but we draw the cursor at the corresponding | |
6017 | window margin in that case. */ | |
6018 | if (!row->reversed_p && hpos < 0) | |
6019 | hpos = 0; | |
6020 | if (row->reversed_p && hpos >= row->used[TEXT_AREA]) | |
6021 | hpos = row->used[TEXT_AREA] - 1; | |
6022 | } | |
5500c422 | 6023 | |
f8fe6f96 EZ |
6024 | if (row->used[TEXT_AREA] > hpos |
6025 | && 0 <= hpos) | |
6026 | glyph = row->glyphs[TEXT_AREA] + hpos; | |
5500c422 GM |
6027 | else |
6028 | glyph = NULL; | |
6029 | ||
6030 | return glyph; | |
6031 | } | |
6032 | ||
6033 | ||
7ab12479 | 6034 | static int |
971de7fb | 6035 | save_window_save (Lisp_Object window, struct Lisp_Vector *vector, int i) |
7ab12479 JB |
6036 | { |
6037 | register struct saved_window *p; | |
6038 | register struct window *w; | |
6a6ee00d | 6039 | register Lisp_Object tem, pers, par; |
7ab12479 | 6040 | |
d3d50620 | 6041 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
6042 | { |
6043 | p = SAVED_WINDOW_N (vector, i); | |
6044 | w = XWINDOW (window); | |
6045 | ||
e8c17b81 | 6046 | wset_temslot (w, make_number (i)); i++; |
7ab12479 | 6047 | p->window = window; |
d3d50620 DA |
6048 | p->buffer = w->buffer; |
6049 | p->left_col = w->left_col; | |
6050 | p->top_line = w->top_line; | |
6051 | p->total_cols = w->total_cols; | |
6052 | p->total_lines = w->total_lines; | |
6053 | p->normal_cols = w->normal_cols; | |
6054 | p->normal_lines = w->normal_lines; | |
80b00b08 DA |
6055 | XSETFASTINT (p->hscroll, w->hscroll); |
6056 | XSETFASTINT (p->min_hscroll, w->min_hscroll); | |
d3d50620 DA |
6057 | p->display_table = w->display_table; |
6058 | p->left_margin_cols = w->left_margin_cols; | |
6059 | p->right_margin_cols = w->right_margin_cols; | |
6060 | p->left_fringe_width = w->left_fringe_width; | |
6061 | p->right_fringe_width = w->right_fringe_width; | |
2af3565e | 6062 | p->fringes_outside_margins = w->fringes_outside_margins ? Qt : Qnil; |
d3d50620 DA |
6063 | p->scroll_bar_width = w->scroll_bar_width; |
6064 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6065 | p->dedicated = w->dedicated; | |
6066 | p->combination_limit = w->combination_limit; | |
6a6ee00d MR |
6067 | p->window_parameters = Qnil; |
6068 | ||
6069 | if (!NILP (Vwindow_persistent_parameters)) | |
6070 | { | |
6071 | /* Run cycle detection on Vwindow_persistent_parameters. */ | |
6072 | Lisp_Object tortoise, hare; | |
6073 | ||
6074 | hare = tortoise = Vwindow_persistent_parameters; | |
6075 | while (CONSP (hare)) | |
6076 | { | |
6077 | hare = XCDR (hare); | |
6078 | if (!CONSP (hare)) | |
6079 | break; | |
6080 | ||
6081 | hare = XCDR (hare); | |
6082 | tortoise = XCDR (tortoise); | |
6083 | ||
6084 | if (EQ (hare, tortoise)) | |
6085 | /* Reset Vwindow_persistent_parameters to Qnil. */ | |
6086 | { | |
6087 | Vwindow_persistent_parameters = Qnil; | |
6088 | break; | |
6089 | } | |
6090 | } | |
6091 | ||
6092 | for (tem = Vwindow_persistent_parameters; CONSP (tem); | |
6093 | tem = XCDR (tem)) | |
6094 | { | |
6095 | pers = XCAR (tem); | |
34a02f46 MR |
6096 | /* Save values for persistent window parameters. */ |
6097 | if (CONSP (pers) && !NILP (XCDR (pers))) | |
6a6ee00d | 6098 | { |
d3d50620 | 6099 | par = Fassq (XCAR (pers), w->window_parameters); |
6a6ee00d MR |
6100 | if (NILP (par)) |
6101 | /* If the window has no value for the parameter, | |
6102 | make one. */ | |
6103 | p->window_parameters = Fcons (Fcons (XCAR (pers), Qnil), | |
6104 | p->window_parameters); | |
6105 | else | |
6106 | /* If the window has a value for the parameter, | |
6107 | save it. */ | |
6108 | p->window_parameters = Fcons (Fcons (XCAR (par), | |
6109 | XCDR (par)), | |
6110 | p->window_parameters); | |
6111 | } | |
6112 | } | |
6113 | } | |
6114 | ||
d3d50620 | 6115 | if (!NILP (w->buffer)) |
7ab12479 | 6116 | { |
6a6ee00d MR |
6117 | /* Save w's value of point in the window configuration. If w |
6118 | is the selected window, then get the value of point from | |
6119 | the buffer; pointm is garbage in the selected window. */ | |
7ab12479 | 6120 | if (EQ (window, selected_window)) |
d3d50620 DA |
6121 | p->pointm = build_marker (XBUFFER (w->buffer), |
6122 | BUF_PT (XBUFFER (w->buffer)), | |
6123 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 | 6124 | else |
d3d50620 | 6125 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
de8c03dc SM |
6126 | XMARKER (p->pointm)->insertion_type |
6127 | = !NILP (Vwindow_point_insertion_type); | |
7ab12479 | 6128 | |
d3d50620 | 6129 | p->start = Fcopy_marker (w->start, Qnil); |
c98ff5dd | 6130 | p->start_at_line_beg = w->start_at_line_beg ? Qt : Qnil; |
7ab12479 | 6131 | |
d3d50620 | 6132 | tem = BVAR (XBUFFER (w->buffer), mark); |
eeb82665 | 6133 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6134 | } |
6135 | else | |
6136 | { | |
6137 | p->pointm = Qnil; | |
6138 | p->start = Qnil; | |
6139 | p->mark = Qnil; | |
6140 | p->start_at_line_beg = Qnil; | |
6141 | } | |
6142 | ||
d3d50620 | 6143 | if (NILP (w->parent)) |
7ab12479 JB |
6144 | p->parent = Qnil; |
6145 | else | |
d3d50620 | 6146 | p->parent = XWINDOW (w->parent)->temslot; |
7ab12479 | 6147 | |
d3d50620 | 6148 | if (NILP (w->prev)) |
7ab12479 JB |
6149 | p->prev = Qnil; |
6150 | else | |
d3d50620 | 6151 | p->prev = XWINDOW (w->prev)->temslot; |
7ab12479 | 6152 | |
d3d50620 DA |
6153 | if (!NILP (w->vchild)) |
6154 | i = save_window_save (w->vchild, vector, i); | |
6155 | if (!NILP (w->hchild)) | |
6156 | i = save_window_save (w->hchild, vector, i); | |
7ab12479 JB |
6157 | } |
6158 | ||
6159 | return i; | |
6160 | } | |
6161 | ||
a7ca3326 | 6162 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6163 | Scurrent_window_configuration, 0, 1, 0, |
6164 | doc: /* Return an object representing the current window configuration of FRAME. | |
6165 | If FRAME is nil or omitted, use the selected frame. | |
6166 | This describes the number of windows, their sizes and current buffers, | |
6167 | and for each displayed buffer, where display starts, and the positions of | |
6168 | point and mark. An exception is made for point in the current buffer: | |
6169 | its value is -not- saved. | |
6170 | This also records the currently selected frame, and FRAME's focus | |
34a02f46 MR |
6171 | redirection (see `redirect-frame-focus'). The variable |
6172 | `window-persistent-parameters' specifies which window parameters are | |
6173 | saved by this function. */) | |
5842a27b | 6174 | (Lisp_Object frame) |
7ab12479 JB |
6175 | { |
6176 | register Lisp_Object tem; | |
6177 | register int n_windows; | |
6178 | register struct save_window_data *data; | |
6179 | register int i; | |
44fa5b1e | 6180 | FRAME_PTR f; |
43bad991 | 6181 | |
44fa5b1e | 6182 | if (NILP (frame)) |
1ae1a37d | 6183 | frame = selected_frame; |
b7826503 | 6184 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 6185 | f = XFRAME (frame); |
7ab12479 | 6186 | |
44fa5b1e | 6187 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
6188 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
6189 | PVEC_WINDOW_CONFIGURATION); | |
6190 | ||
6191 | data->frame_cols = FRAME_COLS (f); | |
6192 | data->frame_lines = FRAME_LINES (f); | |
6193 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
6194 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 6195 | data->selected_frame = selected_frame; |
44fa5b1e | 6196 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6197 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6198 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6199 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6200 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6201 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
7ab12479 JB |
6202 | tem = Fmake_vector (make_number (n_windows), Qnil); |
6203 | data->saved_windows = tem; | |
6204 | for (i = 0; i < n_windows; i++) | |
28be1ada DA |
6205 | ASET (tem, i, |
6206 | Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil)); | |
a1d58e5b | 6207 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6208 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6209 | return (tem); |
6210 | } | |
5500c422 GM |
6211 | \f |
6212 | /*********************************************************************** | |
6213 | Marginal Areas | |
6214 | ***********************************************************************/ | |
6215 | ||
6216 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6217 | 2, 3, 0, |
fdb82f93 | 6218 | doc: /* Set width of marginal areas of window WINDOW. |
52162052 MR |
6219 | WINDOW must be a live window and defaults to the selected one. |
6220 | ||
6b61353c KH |
6221 | Second arg LEFT-WIDTH specifies the number of character cells to |
6222 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6223 | does the same for the right marginal area. A nil width parameter | |
6224 | means no margin. */) | |
5842a27b | 6225 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width) |
5500c422 | 6226 | { |
52162052 | 6227 | struct window *w = decode_live_window (window); |
5500c422 | 6228 | |
6b61353c KH |
6229 | /* Translate negative or zero widths to nil. |
6230 | Margins that are too wide have to be checked elsewhere. */ | |
949cf20f | 6231 | |
c10ce82e | 6232 | if (!NILP (left_width)) |
6b61353c | 6233 | { |
c10ce82e JB |
6234 | CHECK_NUMBER (left_width); |
6235 | if (XINT (left_width) <= 0) | |
6236 | left_width = Qnil; | |
6b61353c | 6237 | } |
5500c422 | 6238 | |
c10ce82e | 6239 | if (!NILP (right_width)) |
6b61353c | 6240 | { |
c10ce82e JB |
6241 | CHECK_NUMBER (right_width); |
6242 | if (XINT (right_width) <= 0) | |
6243 | right_width = Qnil; | |
6b61353c | 6244 | } |
5500c422 | 6245 | |
d3d50620 DA |
6246 | if (!EQ (w->left_margin_cols, left_width) |
6247 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6248 | { |
e8c17b81 PE |
6249 | wset_left_margin_cols (w, left_width); |
6250 | wset_right_margin_cols (w, right_width); | |
949cf20f KS |
6251 | |
6252 | adjust_window_margins (w); | |
6253 | ||
6254 | ++windows_or_buffers_changed; | |
6255 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6256 | } | |
5500c422 | 6257 | |
5500c422 GM |
6258 | return Qnil; |
6259 | } | |
6260 | ||
6261 | ||
6262 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6263 | 0, 1, 0, | |
fdb82f93 | 6264 | doc: /* Get width of marginal areas of window WINDOW. |
52162052 MR |
6265 | WINDOW must be a live window and defaults to the selected one. |
6266 | ||
fdb82f93 PJ |
6267 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). |
6268 | If a marginal area does not exist, its width will be returned | |
6269 | as nil. */) | |
5842a27b | 6270 | (Lisp_Object window) |
5500c422 | 6271 | { |
52162052 | 6272 | struct window *w = decode_live_window (window); |
d3d50620 | 6273 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
949cf20f KS |
6274 | } |
6275 | ||
6276 | ||
6277 | \f | |
6278 | /*********************************************************************** | |
6279 | Fringes | |
6280 | ***********************************************************************/ | |
6281 | ||
a7ca3326 | 6282 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, |
949cf20f | 6283 | 2, 4, 0, |
6b61353c | 6284 | doc: /* Set the fringe widths of window WINDOW. |
52162052 MR |
6285 | WINDOW must be a live window and defaults to the selected one. |
6286 | ||
6b61353c KH |
6287 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for |
6288 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6289 | fringe width. If a fringe width arg is nil, that means to use the | |
6290 | frame's default fringe width. Default fringe widths can be set with | |
6291 | the command `set-fringe-style'. | |
6292 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6293 | outside of the display margins. By default, fringes are drawn between | |
6294 | display marginal areas and the text area. */) | |
5842a27b | 6295 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width, Lisp_Object outside_margins) |
949cf20f | 6296 | { |
52162052 | 6297 | struct window *w = decode_live_window (window); |
2af3565e | 6298 | int outside = !NILP (outside_margins); |
949cf20f | 6299 | |
c10ce82e JB |
6300 | if (!NILP (left_width)) |
6301 | CHECK_NATNUM (left_width); | |
6302 | if (!NILP (right_width)) | |
6303 | CHECK_NATNUM (right_width); | |
5a857365 | 6304 | |
017e297e | 6305 | /* Do nothing on a tty. */ |
d46c6df5 | 6306 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
d3d50620 DA |
6307 | && (!EQ (w->left_fringe_width, left_width) |
6308 | || !EQ (w->right_fringe_width, right_width) | |
2af3565e | 6309 | || w->fringes_outside_margins != outside)) |
949cf20f | 6310 | { |
e8c17b81 PE |
6311 | wset_left_fringe_width (w, left_width); |
6312 | wset_right_fringe_width (w, right_width); | |
2af3565e | 6313 | w->fringes_outside_margins = outside; |
949cf20f KS |
6314 | |
6315 | adjust_window_margins (w); | |
6316 | ||
6317 | clear_glyph_matrix (w->current_matrix); | |
e8c17b81 | 6318 | wset_window_end_valid (w, Qnil); |
949cf20f KS |
6319 | |
6320 | ++windows_or_buffers_changed; | |
6321 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6322 | } | |
6323 | ||
6324 | return Qnil; | |
6325 | } | |
6326 | ||
6327 | ||
6328 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6329 | 0, 1, 0, | |
6330 | doc: /* Get width of fringes of window WINDOW. | |
52162052 MR |
6331 | WINDOW must be a live window and defaults to the selected one. |
6332 | ||
6b61353c | 6333 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
5842a27b | 6334 | (Lisp_Object window) |
949cf20f | 6335 | { |
52162052 | 6336 | struct window *w = decode_live_window (window); |
d46c6df5 | 6337 | |
949cf20f KS |
6338 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6339 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
d46c6df5 NR |
6340 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
6341 | ? Qt : Qnil), Qnil))); | |
949cf20f KS |
6342 | } |
6343 | ||
6344 | ||
6345 | \f | |
6346 | /*********************************************************************** | |
6347 | Scroll bars | |
6348 | ***********************************************************************/ | |
6349 | ||
a7ca3326 | 6350 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, |
16a97296 | 6351 | Sset_window_scroll_bars, 2, 4, 0, |
949cf20f | 6352 | doc: /* Set width and type of scroll bars of window WINDOW. |
52162052 MR |
6353 | WINDOW must be a live window and defaults to the selected one. |
6354 | ||
949cf20f KS |
6355 | Second parameter WIDTH specifies the pixel width for the scroll bar; |
6356 | this is automatically adjusted to a multiple of the frame column width. | |
6357 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6358 | bar: left, right, or nil. | |
6b61353c | 6359 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6360 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6361 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
5842a27b | 6362 | (Lisp_Object window, Lisp_Object width, Lisp_Object vertical_type, Lisp_Object horizontal_type) |
949cf20f | 6363 | { |
52162052 | 6364 | struct window *w = decode_live_window (window); |
949cf20f KS |
6365 | |
6366 | if (!NILP (width)) | |
0f8fe9a2 | 6367 | { |
af5a5a98 | 6368 | CHECK_RANGED_INTEGER (width, 0, INT_MAX); |
949cf20f | 6369 | |
0f8fe9a2 SM |
6370 | if (XINT (width) == 0) |
6371 | vertical_type = Qnil; | |
6372 | } | |
949cf20f | 6373 | |
413a79ad | 6374 | if (!(NILP (vertical_type) |
0cc1039f | 6375 | || EQ (vertical_type, Qleft) |
6b61353c KH |
6376 | || EQ (vertical_type, Qright) |
6377 | || EQ (vertical_type, Qt))) | |
6378 | error ("Invalid type of vertical scroll bar"); | |
6379 | ||
d3d50620 DA |
6380 | if (!EQ (w->scroll_bar_width, width) |
6381 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
949cf20f | 6382 | { |
e8c17b81 PE |
6383 | wset_scroll_bar_width (w, width); |
6384 | wset_vertical_scroll_bar_type (w, vertical_type); | |
949cf20f KS |
6385 | |
6386 | adjust_window_margins (w); | |
6387 | ||
6388 | clear_glyph_matrix (w->current_matrix); | |
e8c17b81 | 6389 | wset_window_end_valid (w, Qnil); |
949cf20f KS |
6390 | |
6391 | ++windows_or_buffers_changed; | |
6392 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6393 | } | |
6394 | ||
6395 | return Qnil; | |
6396 | } | |
6397 | ||
6398 | ||
6399 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6400 | 0, 1, 0, | |
6401 | doc: /* Get width and type of scroll bars of window WINDOW. | |
52162052 MR |
6402 | WINDOW must be a live window and defaults to the selected one. |
6403 | ||
6b61353c KH |
6404 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6405 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6406 | value. */) | |
5842a27b | 6407 | (Lisp_Object window) |
949cf20f | 6408 | { |
52162052 | 6409 | struct window *w = decode_live_window (window); |
949cf20f KS |
6410 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) |
6411 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6412 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
6413 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
d3d50620 | 6414 | Fcons (w->vertical_scroll_bar_type, |
949cf20f | 6415 | Fcons (Qnil, Qnil)))); |
5500c422 GM |
6416 | } |
6417 | ||
6418 | ||
7ab12479 | 6419 | \f |
5500c422 GM |
6420 | /*********************************************************************** |
6421 | Smooth scrolling | |
6422 | ***********************************************************************/ | |
6423 | ||
0cc1039f | 6424 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 | 6425 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
49745b39 | 6426 | If WINDOW is omitted or nil, it defaults to the selected window. |
0cc1039f | 6427 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6428 | optional second arg PIXELS-P means value is measured in pixels. */) |
5842a27b | 6429 | (Lisp_Object window, Lisp_Object pixels_p) |
5500c422 | 6430 | { |
47004952 | 6431 | Lisp_Object result; |
5500c422 GM |
6432 | struct frame *f; |
6433 | struct window *w; | |
177c0ea7 | 6434 | |
5500c422 GM |
6435 | if (NILP (window)) |
6436 | window = selected_window; | |
47004952 | 6437 | else |
b7826503 | 6438 | CHECK_WINDOW (window); |
5500c422 | 6439 | w = XWINDOW (window); |
d3d50620 | 6440 | f = XFRAME (w->frame); |
177c0ea7 | 6441 | |
5500c422 | 6442 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6443 | result = (NILP (pixels_p) |
6444 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6445 | : make_number (-w->vscroll)); | |
5500c422 | 6446 | else |
47004952 GM |
6447 | result = make_number (0); |
6448 | return result; | |
5500c422 GM |
6449 | } |
6450 | ||
6451 | ||
6452 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6453 | 2, 3, 0, |
fdb82f93 | 6454 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6455 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6456 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6457 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6458 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6459 | corresponds to an integral number of pixels. The return value is the | |
6460 | result of this rounding. | |
6461 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
5842a27b | 6462 | (Lisp_Object window, Lisp_Object vscroll, Lisp_Object pixels_p) |
5500c422 GM |
6463 | { |
6464 | struct window *w; | |
6465 | struct frame *f; | |
177c0ea7 | 6466 | |
5500c422 GM |
6467 | if (NILP (window)) |
6468 | window = selected_window; | |
47004952 | 6469 | else |
b7826503 PJ |
6470 | CHECK_WINDOW (window); |
6471 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 6472 | |
5500c422 | 6473 | w = XWINDOW (window); |
d3d50620 | 6474 | f = XFRAME (w->frame); |
5500c422 GM |
6475 | |
6476 | if (FRAME_WINDOW_P (f)) | |
6477 | { | |
6478 | int old_dy = w->vscroll; | |
177c0ea7 | 6479 | |
0cc1039f KS |
6480 | w->vscroll = - (NILP (pixels_p) |
6481 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6482 | : XFLOATINT (vscroll)); | |
47004952 | 6483 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6484 | |
e56263e5 KS |
6485 | if (w->vscroll != old_dy) |
6486 | { | |
6487 | /* Adjust glyph matrix of the frame if the virtual display | |
6488 | area becomes larger than before. */ | |
6489 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
6490 | adjust_glyphs (f); | |
177c0ea7 | 6491 | |
e56263e5 | 6492 | /* Prevent redisplay shortcuts. */ |
d3d50620 | 6493 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
e56263e5 | 6494 | } |
5500c422 | 6495 | } |
177c0ea7 | 6496 | |
0cc1039f | 6497 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 6498 | } |
177c0ea7 | 6499 | |
7bbb5782 GM |
6500 | \f |
6501 | /* Call FN for all leaf windows on frame F. FN is called with the | |
6502 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 6503 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 | 6504 | |
2f7c71a1 AS |
6505 | static void |
6506 | foreach_window (struct frame *f, int (*fn) (struct window *, void *), | |
6507 | void *user_data) | |
7bbb5782 | 6508 | { |
56f2de10 | 6509 | /* delete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
76fb556f YM |
6510 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) |
6511 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
6512 | } |
6513 | ||
6514 | ||
6515 | /* Helper function for foreach_window. Call FN for all leaf windows | |
6516 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 6517 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 6518 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 6519 | |
67492200 | 6520 | static int |
971de7fb | 6521 | foreach_window_1 (struct window *w, int (*fn) (struct window *, void *), void *user_data) |
7bbb5782 | 6522 | { |
67492200 | 6523 | int cont; |
177c0ea7 | 6524 | |
67492200 | 6525 | for (cont = 1; w && cont;) |
7bbb5782 | 6526 | { |
d3d50620 DA |
6527 | if (!NILP (w->hchild)) |
6528 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); | |
6529 | else if (!NILP (w->vchild)) | |
6530 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); | |
177c0ea7 | 6531 | else |
0f532a9a | 6532 | cont = fn (w, user_data); |
177c0ea7 | 6533 | |
d3d50620 | 6534 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
7bbb5782 | 6535 | } |
67492200 GM |
6536 | |
6537 | return cont; | |
7bbb5782 GM |
6538 | } |
6539 | ||
6540 | ||
6d194a45 | 6541 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 6542 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
6543 | the window start. */ |
6544 | ||
67492200 | 6545 | static int |
971de7fb | 6546 | freeze_window_start (struct window *w, void *freeze_p) |
7bbb5782 | 6547 | { |
08c1d235 SM |
6548 | if (MINI_WINDOW_P (w) |
6549 | || (WINDOWP (selected_window) /* Can be nil in corner cases. */ | |
6550 | && (w == XWINDOW (selected_window) | |
6551 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
6552 | && ! NILP (Vminibuf_scroll_window) | |
6553 | && w == XWINDOW (Vminibuf_scroll_window))))) | |
f95464e4 | 6554 | freeze_p = NULL; |
177c0ea7 | 6555 | |
f95464e4 | 6556 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 6557 | return 1; |
7bbb5782 GM |
6558 | } |
6559 | ||
6560 | ||
6561 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
6562 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
6563 | means freeze the window start. */ | |
6564 | ||
6565 | void | |
971de7fb | 6566 | freeze_window_starts (struct frame *f, int freeze_p) |
7bbb5782 | 6567 | { |
cbccabec | 6568 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 6569 | } |
5500c422 GM |
6570 | |
6571 | \f | |
6572 | /*********************************************************************** | |
6573 | Initialization | |
6574 | ***********************************************************************/ | |
6575 | ||
6198ccd0 MR |
6576 | /* Return 1 if window configurations CONFIGURATION1 and CONFIGURATION2 |
6577 | describe the same state of affairs. This is used by Fequal. | |
6578 | ||
f75d7a91 | 6579 | IGNORE_POSITIONS means ignore non-matching scroll positions |
6198ccd0 MR |
6580 | and the like. |
6581 | ||
e4769531 | 6582 | This ignores a couple of things like the dedication status of |
b6f67890 MR |
6583 | window, combination_limit and the like. This might have to be |
6584 | fixed. */ | |
cbff28e8 | 6585 | |
f75d7a91 PE |
6586 | bool |
6587 | compare_window_configurations (Lisp_Object configuration1, | |
6588 | Lisp_Object configuration2, | |
6589 | bool ignore_positions) | |
cbff28e8 RS |
6590 | { |
6591 | register struct save_window_data *d1, *d2; | |
6198ccd0 | 6592 | struct Lisp_Vector *sws1, *sws2; |
71f02bc5 | 6593 | ptrdiff_t i; |
cbff28e8 | 6594 | |
6198ccd0 MR |
6595 | CHECK_WINDOW_CONFIGURATION (configuration1); |
6596 | CHECK_WINDOW_CONFIGURATION (configuration2); | |
6597 | ||
6598 | d1 = (struct save_window_data *) XVECTOR (configuration1); | |
6599 | d2 = (struct save_window_data *) XVECTOR (configuration2); | |
6600 | sws1 = XVECTOR (d1->saved_windows); | |
6601 | sws2 = XVECTOR (d2->saved_windows); | |
6602 | ||
6603 | /* Frame settings must match. */ | |
6604 | if (d1->frame_cols != d2->frame_cols | |
6605 | || d1->frame_lines != d2->frame_lines | |
6606 | || d1->frame_menu_bar_lines != d2->frame_menu_bar_lines | |
6607 | || !EQ (d1->selected_frame, d2->selected_frame) | |
6608 | || !EQ (d1->current_buffer, d2->current_buffer) | |
6609 | || (!ignore_positions | |
6610 | && (!EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window) | |
6611 | || !EQ (d1->minibuf_selected_window, d2->minibuf_selected_window))) | |
6612 | || !EQ (d1->focus_frame, d2->focus_frame) | |
6613 | /* Verify that the two configurations have the same number of windows. */ | |
6614 | || sws1->header.size != sws2->header.size) | |
cbff28e8 | 6615 | return 0; |
cbff28e8 | 6616 | |
6198ccd0 | 6617 | for (i = 0; i < sws1->header.size; i++) |
cbff28e8 | 6618 | { |
6198ccd0 | 6619 | struct saved_window *sw1, *sw2; |
cbff28e8 | 6620 | |
6198ccd0 MR |
6621 | sw1 = SAVED_WINDOW_N (sws1, i); |
6622 | sw2 = SAVED_WINDOW_N (sws2, i); | |
6623 | ||
6624 | if ( | |
6625 | /* The "current" windows in the two configurations must | |
6626 | correspond to each other. */ | |
6627 | EQ (d1->current_window, sw1->window) | |
6628 | != EQ (d2->current_window, sw2->window) | |
6629 | /* Windows' buffers must match. */ | |
6630 | || !EQ (sw1->buffer, sw2->buffer) | |
6631 | || !EQ (sw1->left_col, sw2->left_col) | |
6632 | || !EQ (sw1->top_line, sw2->top_line) | |
6633 | || !EQ (sw1->total_cols, sw2->total_cols) | |
6634 | || !EQ (sw1->total_lines, sw2->total_lines) | |
6635 | || !EQ (sw1->display_table, sw2->display_table) | |
6636 | /* The next two disjuncts check the window structure for | |
6637 | equality. */ | |
6638 | || !EQ (sw1->parent, sw2->parent) | |
6639 | || !EQ (sw1->prev, sw2->prev) | |
6640 | || (!ignore_positions | |
6641 | && (!EQ (sw1->hscroll, sw2->hscroll) | |
6642 | || !EQ (sw1->min_hscroll, sw2->min_hscroll) | |
6643 | || !EQ (sw1->start_at_line_beg, sw2->start_at_line_beg) | |
6644 | || NILP (Fequal (sw1->start, sw2->start)) | |
6645 | || NILP (Fequal (sw1->pointm, sw2->pointm)) | |
6646 | || NILP (Fequal (sw1->mark, sw2->mark)))) | |
6647 | || !EQ (sw1->left_margin_cols, sw2->left_margin_cols) | |
6648 | || !EQ (sw1->right_margin_cols, sw2->right_margin_cols) | |
6649 | || !EQ (sw1->left_fringe_width, sw2->left_fringe_width) | |
6650 | || !EQ (sw1->right_fringe_width, sw2->right_fringe_width) | |
6651 | || !EQ (sw1->fringes_outside_margins, sw2->fringes_outside_margins) | |
6652 | || !EQ (sw1->scroll_bar_width, sw2->scroll_bar_width) | |
6653 | || !EQ (sw1->vertical_scroll_bar_type, sw2->vertical_scroll_bar_type)) | |
949cf20f | 6654 | return 0; |
cbff28e8 RS |
6655 | } |
6656 | ||
6657 | return 1; | |
6658 | } | |
2f8274be RS |
6659 | |
6660 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
6661 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
6662 | doc: /* Compare two window configurations as regards the structure of windows. |
6663 | This function ignores details such as the values of point and mark | |
6664 | and scrolling positions. */) | |
5842a27b | 6665 | (Lisp_Object x, Lisp_Object y) |
2f8274be RS |
6666 | { |
6667 | if (compare_window_configurations (x, y, 1)) | |
6668 | return Qt; | |
6669 | return Qnil; | |
6670 | } | |
cbff28e8 | 6671 | \f |
dfcf069d | 6672 | void |
971de7fb | 6673 | init_window_once (void) |
7ab12479 | 6674 | { |
3224dac1 | 6675 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
6676 | XSETFRAME (selected_frame, f); |
6677 | Vterminal_frame = selected_frame; | |
e69b0960 DA |
6678 | minibuf_window = f->minibuffer_window; |
6679 | selected_window = f->selected_window; | |
1ae1a37d | 6680 | last_nonminibuf_frame = f; |
5b03d3c0 RS |
6681 | |
6682 | window_initialized = 1; | |
7ab12479 JB |
6683 | } |
6684 | ||
67492200 | 6685 | void |
971de7fb | 6686 | init_window (void) |
67492200 GM |
6687 | { |
6688 | Vwindow_list = Qnil; | |
6689 | } | |
6690 | ||
dfcf069d | 6691 | void |
971de7fb | 6692 | syms_of_window (void) |
7ab12479 | 6693 | { |
cd3520a4 JB |
6694 | DEFSYM (Qscroll_up, "scroll-up"); |
6695 | DEFSYM (Qscroll_down, "scroll-down"); | |
6696 | DEFSYM (Qscroll_command, "scroll-command"); | |
a4b000fb JL |
6697 | |
6698 | Fput (Qscroll_up, Qscroll_command, Qt); | |
6699 | Fput (Qscroll_down, Qscroll_command, Qt); | |
6700 | ||
cd3520a4 JB |
6701 | DEFSYM (Qwindow_configuration_change_hook, "window-configuration-change-hook"); |
6702 | DEFSYM (Qwindowp, "windowp"); | |
6703 | DEFSYM (Qwindow_configuration_p, "window-configuration-p"); | |
6704 | DEFSYM (Qwindow_live_p, "window-live-p"); | |
52162052 | 6705 | DEFSYM (Qwindow_valid_p, "window-valid-p"); |
cd3520a4 JB |
6706 | DEFSYM (Qwindow_deletable_p, "window-deletable-p"); |
6707 | DEFSYM (Qdelete_window, "delete-window"); | |
5386012d MR |
6708 | DEFSYM (Qwindow_resize_root_window, "window--resize-root-window"); |
6709 | DEFSYM (Qwindow_resize_root_window_vertically, "window--resize-root-window-vertically"); | |
cd3520a4 JB |
6710 | DEFSYM (Qsafe, "safe"); |
6711 | DEFSYM (Qdisplay_buffer, "display-buffer"); | |
6712 | DEFSYM (Qreplace_buffer_in_windows, "replace-buffer-in-windows"); | |
6713 | DEFSYM (Qrecord_window_buffer, "record-window-buffer"); | |
6714 | DEFSYM (Qget_mru_window, "get-mru-window"); | |
6715 | DEFSYM (Qtemp_buffer_show_hook, "temp-buffer-show-hook"); | |
6716 | DEFSYM (Qabove, "above"); | |
6717 | DEFSYM (Qbelow, "below"); | |
6a6ee00d | 6718 | DEFSYM (Qclone_of, "clone-of"); |
b9e809c2 | 6719 | |
67492200 | 6720 | staticpro (&Vwindow_list); |
8bfb170b KS |
6721 | |
6722 | minibuf_selected_window = Qnil; | |
3dbab091 | 6723 | staticpro (&minibuf_selected_window); |
67492200 | 6724 | |
c876b227 | 6725 | window_scroll_pixel_based_preserve_x = -1; |
66fe93d1 | 6726 | window_scroll_pixel_based_preserve_y = -1; |
c876b227 SM |
6727 | window_scroll_preserve_hpos = -1; |
6728 | window_scroll_preserve_vpos = -1; | |
66d43aea | 6729 | |
29208e82 | 6730 | DEFVAR_LISP ("temp-buffer-show-function", Vtemp_buffer_show_function, |
fdb82f93 PJ |
6731 | doc: /* Non-nil means call as function to display a help buffer. |
6732 | The function is called with one argument, the buffer to be displayed. | |
6733 | Used by `with-output-to-temp-buffer'. | |
6734 | If this function is used, then it must do the entire job of showing | |
6735 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 | 6736 | Vtemp_buffer_show_function = Qnil; |
e10ac9f1 | 6737 | |
29208e82 | 6738 | DEFVAR_LISP ("minibuffer-scroll-window", Vminibuf_scroll_window, |
fdb82f93 | 6739 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
6740 | Vminibuf_scroll_window = Qnil; |
6741 | ||
29208e82 | 6742 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", mode_line_in_non_selected_windows, |
26124d5e | 6743 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
6744 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
6745 | is displayed in the `mode-line' face. */); | |
6746 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 6747 | |
29208e82 | 6748 | DEFVAR_LISP ("other-window-scroll-buffer", Vother_window_scroll_buffer, |
fdb82f93 | 6749 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
6750 | Vother_window_scroll_buffer = Qnil; |
6751 | ||
29208e82 | 6752 | DEFVAR_BOOL ("auto-window-vscroll", auto_window_vscroll_p, |
e10ac9f1 | 6753 | doc: /* Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); |
e56263e5 KS |
6754 | auto_window_vscroll_p = 1; |
6755 | ||
29208e82 | 6756 | DEFVAR_INT ("next-screen-context-lines", next_screen_context_lines, |
e10ac9f1 | 6757 | doc: /* Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
6758 | next_screen_context_lines = 2; |
6759 | ||
5500c422 | 6760 | DEFVAR_LISP ("scroll-preserve-screen-position", |
29208e82 | 6761 | Vscroll_preserve_screen_position, |
e10ac9f1 | 6762 | doc: /* Controls if scroll commands move point to keep its screen position unchanged. |
bdf4ec93 RS |
6763 | A value of nil means point does not keep its screen position except |
6764 | at the scroll margin or window boundary respectively. | |
6765 | A value of t means point keeps its screen position if the scroll | |
6766 | command moved it vertically out of the window, e.g. when scrolling | |
6767 | by full screens. | |
9013a7f8 | 6768 | Any other value means point always keeps its screen position. |
a4b000fb JL |
6769 | Scroll commands should have the `scroll-command' property |
6770 | on their symbols to be controlled by this variable. */); | |
5500c422 | 6771 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 6772 | |
29208e82 | 6773 | DEFVAR_LISP ("window-point-insertion-type", Vwindow_point_insertion_type, |
a1562258 SM |
6774 | doc: /* Type of marker to use for `window-point'. */); |
6775 | Vwindow_point_insertion_type = Qnil; | |
6776 | ||
543f5fb1 | 6777 | DEFVAR_LISP ("window-configuration-change-hook", |
29208e82 | 6778 | Vwindow_configuration_change_hook, |
fdb82f93 | 6779 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
6780 | The buffer-local part is run once per window, with the relevant window |
6781 | selected; while the global part is run only once for the modified frame, | |
6782 | with the relevant frame selected. */); | |
543f5fb1 RS |
6783 | Vwindow_configuration_change_hook = Qnil; |
6784 | ||
29208e82 | 6785 | DEFVAR_LISP ("recenter-redisplay", Vrecenter_redisplay, |
61d4b438 MR |
6786 | doc: /* Non-nil means `recenter' redraws entire frame. |
6787 | If this option is non-nil, then the `recenter' command with a nil | |
6788 | argument will redraw the entire frame; the special value `tty' causes | |
6789 | the frame to be redrawn only if it is a tty frame. */); | |
666e158e MB |
6790 | Vrecenter_redisplay = Qtty; |
6791 | ||
a0c2d0ae | 6792 | DEFVAR_LISP ("window-combination-resize", Vwindow_combination_resize, |
454592a6 | 6793 | doc: /* If t, resize window combinations proportionally. |
1a13852e | 6794 | If this variable is nil, splitting a window gets the entire screen space |
a0c2d0ae | 6795 | for displaying the new window from the window to split. Deleting and |
df85d315 | 6796 | resizing a window preferably resizes one adjacent window only. |
a0c2d0ae | 6797 | |
454592a6 | 6798 | If this variable is t, splitting a window tries to get the space |
a0c2d0ae MR |
6799 | proportionally from all windows in the same combination. This also |
6800 | allows to split a window that is otherwise too small or of fixed size. | |
6801 | Resizing and deleting a window proportionally resize all windows in the | |
6802 | same combination. | |
1a13852e | 6803 | |
454592a6 MR |
6804 | Other values are reserved for future use. |
6805 | ||
b6f67890 | 6806 | This variable takes no effect if `window-combination-limit' is non-nil. */); |
a0c2d0ae | 6807 | Vwindow_combination_resize = Qnil; |
1a13852e | 6808 | |
b6f67890 | 6809 | DEFVAR_LISP ("window-combination-limit", Vwindow_combination_limit, |
454592a6 | 6810 | doc: /* If t, splitting a window makes a new parent window. |
1a13852e MR |
6811 | If this variable is nil, splitting a window will create a new parent |
6812 | window only if the window has no parent window or the window shall | |
58179cce | 6813 | become a combination orthogonal to the one it is part of. |
1a13852e | 6814 | |
b6f67890 MR |
6815 | If this variable is t, splitting a window always creates a new parent |
6816 | window. If all splits behave this way, each frame's window tree is a | |
6817 | binary tree and every window but the frame's root window has exactly one | |
6818 | sibling. | |
1a13852e | 6819 | |
b6f67890 | 6820 | Other values are reserved for future use. |
1a13852e | 6821 | |
d2999b1a MR |
6822 | The value of this variable is also assigned to the combination limit of |
6823 | the new parent window. The combination limit of a window can be | |
6824 | retrieved via the function `window-combination-limit' and altered by the | |
6825 | function `set-window-combination-limit'. */); | |
b6f67890 | 6826 | Vwindow_combination_limit = Qnil; |
666e158e | 6827 | |
6a6ee00d MR |
6828 | DEFVAR_LISP ("window-persistent-parameters", Vwindow_persistent_parameters, |
6829 | doc: /* Alist of persistent window parameters. | |
34a02f46 MR |
6830 | This alist specifies which window parameters shall get saved by |
6831 | `current-window-configuration' and `window-state-get' and subsequently | |
6832 | restored to their previous values by `set-window-configuration' and | |
6833 | `window-state-put'. | |
6a6ee00d MR |
6834 | |
6835 | The car of each entry of this alist is the symbol specifying the | |
6836 | parameter. The cdr is one of the following: | |
6837 | ||
34a02f46 MR |
6838 | nil means the parameter is neither saved by `window-state-get' nor by |
6839 | `current-window-configuration'. | |
6a6ee00d | 6840 | |
34a02f46 MR |
6841 | t means the parameter is saved by `current-window-configuration' and, |
6842 | provided its WRITABLE argument is nil, by `window-state-get'. | |
6a6ee00d | 6843 | |
34a02f46 MR |
6844 | The symbol `writable' means the parameter is saved unconditionally by |
6845 | both `current-window-configuration' and `window-state-get'. Do not use | |
6846 | this value for parameters without read syntax (like windows or frames). | |
6a6ee00d MR |
6847 | |
6848 | Parameters not saved by `current-window-configuration' or | |
6849 | `window-state-get' are left alone by `set-window-configuration' | |
6850 | respectively are not installed by `window-state-put'. */); | |
34a02f46 | 6851 | Vwindow_persistent_parameters = list1 (Fcons (Qclone_of, Qt)); |
6a6ee00d | 6852 | |
7ab12479 JB |
6853 | defsubr (&Sselected_window); |
6854 | defsubr (&Sminibuffer_window); | |
6855 | defsubr (&Swindow_minibuffer_p); | |
6856 | defsubr (&Swindowp); | |
52162052 | 6857 | defsubr (&Swindow_valid_p); |
806b4d9b | 6858 | defsubr (&Swindow_live_p); |
727e958e MR |
6859 | defsubr (&Swindow_frame); |
6860 | defsubr (&Sframe_root_window); | |
6861 | defsubr (&Sframe_first_window); | |
6862 | defsubr (&Sframe_selected_window); | |
6863 | defsubr (&Sset_frame_selected_window); | |
7ab12479 | 6864 | defsubr (&Spos_visible_in_window_p); |
536833ab | 6865 | defsubr (&Swindow_line_height); |
7ab12479 | 6866 | defsubr (&Swindow_buffer); |
bf60a96b | 6867 | defsubr (&Swindow_parent); |
d68443dc MR |
6868 | defsubr (&Swindow_top_child); |
6869 | defsubr (&Swindow_left_child); | |
6870 | defsubr (&Swindow_next_sibling); | |
6871 | defsubr (&Swindow_prev_sibling); | |
b6f67890 MR |
6872 | defsubr (&Swindow_combination_limit); |
6873 | defsubr (&Sset_window_combination_limit); | |
abde8f8c MR |
6874 | defsubr (&Swindow_use_time); |
6875 | defsubr (&Swindow_top_line); | |
6876 | defsubr (&Swindow_left_column); | |
105216ed CY |
6877 | defsubr (&Swindow_total_height); |
6878 | defsubr (&Swindow_total_width); | |
496e208e MR |
6879 | defsubr (&Swindow_normal_size); |
6880 | defsubr (&Swindow_new_total); | |
6881 | defsubr (&Swindow_new_normal); | |
6882 | defsubr (&Sset_window_new_total); | |
6883 | defsubr (&Sset_window_new_normal); | |
d615d6d2 | 6884 | defsubr (&Swindow_resize_apply); |
105216ed CY |
6885 | defsubr (&Swindow_body_height); |
6886 | defsubr (&Swindow_body_width); | |
7ab12479 JB |
6887 | defsubr (&Swindow_hscroll); |
6888 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
6889 | defsubr (&Swindow_redisplay_end_trigger); |
6890 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 6891 | defsubr (&Swindow_edges); |
c99a9eb3 | 6892 | defsubr (&Swindow_pixel_edges); |
9d5405ec | 6893 | defsubr (&Swindow_absolute_pixel_edges); |
c99a9eb3 RS |
6894 | defsubr (&Swindow_inside_edges); |
6895 | defsubr (&Swindow_inside_pixel_edges); | |
9d5405ec | 6896 | defsubr (&Swindow_inside_absolute_pixel_edges); |
d5783c40 JB |
6897 | defsubr (&Scoordinates_in_window_p); |
6898 | defsubr (&Swindow_at); | |
7ab12479 JB |
6899 | defsubr (&Swindow_point); |
6900 | defsubr (&Swindow_start); | |
6901 | defsubr (&Swindow_end); | |
6902 | defsubr (&Sset_window_point); | |
6903 | defsubr (&Sset_window_start); | |
6904 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 6905 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
6906 | defsubr (&Swindow_display_table); |
6907 | defsubr (&Sset_window_display_table); | |
6908 | defsubr (&Snext_window); | |
6909 | defsubr (&Sprevious_window); | |
7ab12479 | 6910 | defsubr (&Sget_buffer_window); |
1a13852e MR |
6911 | defsubr (&Sdelete_other_windows_internal); |
6912 | defsubr (&Sdelete_window_internal); | |
6913 | defsubr (&Sresize_mini_window_internal); | |
7ab12479 | 6914 | defsubr (&Sset_window_buffer); |
1a13852e | 6915 | defsubr (&Srun_window_configuration_change_hook); |
7ab12479 | 6916 | defsubr (&Sselect_window); |
6b61353c | 6917 | defsubr (&Sforce_window_update); |
3e21b6a7 | 6918 | defsubr (&Stemp_output_buffer_show); |
1a13852e | 6919 | defsubr (&Ssplit_window_internal); |
7ab12479 JB |
6920 | defsubr (&Sscroll_up); |
6921 | defsubr (&Sscroll_down); | |
6922 | defsubr (&Sscroll_left); | |
6923 | defsubr (&Sscroll_right); | |
ccd0664b | 6924 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 6925 | defsubr (&Sscroll_other_window); |
fa832261 | 6926 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 6927 | defsubr (&Srecenter); |
81fe0836 | 6928 | defsubr (&Swindow_text_height); |
7ab12479 JB |
6929 | defsubr (&Smove_to_window_line); |
6930 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 6931 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
6932 | defsubr (&Sset_window_configuration); |
6933 | defsubr (&Scurrent_window_configuration); | |
5500c422 GM |
6934 | defsubr (&Sset_window_margins); |
6935 | defsubr (&Swindow_margins); | |
949cf20f KS |
6936 | defsubr (&Sset_window_fringes); |
6937 | defsubr (&Swindow_fringes); | |
6938 | defsubr (&Sset_window_scroll_bars); | |
6939 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
6940 | defsubr (&Swindow_vscroll); |
6941 | defsubr (&Sset_window_vscroll); | |
2f8274be | 6942 | defsubr (&Scompare_window_configurations); |
67492200 | 6943 | defsubr (&Swindow_list); |
abde8f8c | 6944 | defsubr (&Swindow_list_1); |
496e208e MR |
6945 | defsubr (&Swindow_prev_buffers); |
6946 | defsubr (&Sset_window_prev_buffers); | |
6947 | defsubr (&Swindow_next_buffers); | |
6948 | defsubr (&Sset_window_next_buffers); | |
cfbb2395 JB |
6949 | defsubr (&Swindow_parameters); |
6950 | defsubr (&Swindow_parameter); | |
6951 | defsubr (&Sset_window_parameter); | |
7ab12479 JB |
6952 | } |
6953 | ||
dfcf069d | 6954 | void |
971de7fb | 6955 | keys_of_window (void) |
7ab12479 | 6956 | { |
7ab12479 JB |
6957 | initial_define_key (control_x_map, '<', "scroll-left"); |
6958 | initial_define_key (control_x_map, '>', "scroll-right"); | |
6959 | ||
32129746 | 6960 | initial_define_key (global_map, Ctl ('V'), "scroll-up-command"); |
7ab12479 | 6961 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); |
32129746 | 6962 | initial_define_key (meta_map, 'v', "scroll-down-command"); |
7ab12479 | 6963 | } |