Commit | Line | Data |
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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
ab422c4d PE |
3 | Copyright (C) 1985-1987, 1993-1998, 2000-2013 Free Software |
4 | 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 | 22 | |
4d553a13 KL |
23 | #include <stdio.h> |
24 | ||
7ab12479 | 25 | #include "lisp.h" |
e5560ff7 | 26 | #include "character.h" |
7ab12479 | 27 | #include "buffer.h" |
3e4731a3 | 28 | #include "keyboard.h" |
e35f6ff7 | 29 | #include "keymap.h" |
44fa5b1e | 30 | #include "frame.h" |
7ab12479 JB |
31 | #include "window.h" |
32 | #include "commands.h" | |
33 | #include "indent.h" | |
34 | #include "termchar.h" | |
35 | #include "disptab.h" | |
dfcf069d | 36 | #include "dispextern.h" |
5500c422 GM |
37 | #include "blockinput.h" |
38 | #include "intervals.h" | |
de509a60 | 39 | #include "termhooks.h" /* For FRAME_TERMINAL. */ |
66738305 DA |
40 | #ifdef HAVE_WINDOW_SYSTEM |
41 | #include TERM_HEADER | |
42 | #endif /* HAVE_WINDOW_SYSTEM */ | |
1e3c8885 EZ |
43 | #ifdef MSDOS |
44 | #include "msdos.h" | |
45 | #endif | |
5500c422 | 46 | |
b52d6985 PE |
47 | Lisp_Object Qwindowp, Qwindow_live_p; |
48 | static Lisp_Object Qwindow_valid_p; | |
84575e67 PE |
49 | static Lisp_Object Qwindow_configuration_p; |
50 | static Lisp_Object Qrecord_window_buffer; | |
9397e56f | 51 | static Lisp_Object Qwindow_deletable_p, Qdelete_window, Qdisplay_buffer; |
b9e809c2 | 52 | static Lisp_Object Qreplace_buffer_in_windows, Qget_mru_window; |
5386012d | 53 | static Lisp_Object Qwindow_resize_root_window, Qwindow_resize_root_window_vertically; |
955cbe7b | 54 | static Lisp_Object Qscroll_up, Qscroll_down, Qscroll_command; |
5938d519 | 55 | static Lisp_Object Qsafe, Qabove, Qbelow, Qwindow_size, Qclone_of; |
b9e809c2 | 56 | |
f57e2426 | 57 | static int displayed_window_lines (struct window *); |
f57e2426 J |
58 | static int count_windows (struct window *); |
59 | static int get_leaf_windows (struct window *, struct window **, int); | |
56b5d5b1 DA |
60 | static void window_scroll (Lisp_Object, EMACS_INT, bool, int); |
61 | static void window_scroll_pixel_based (Lisp_Object, int, bool, int); | |
62 | static void window_scroll_line_based (Lisp_Object, int, bool, int); | |
f57e2426 J |
63 | static Lisp_Object window_list (void); |
64 | static int add_window_to_list (struct window *, void *); | |
f57e2426 J |
65 | static Lisp_Object next_window (Lisp_Object, Lisp_Object, |
66 | Lisp_Object, int); | |
67 | static void decode_next_window_args (Lisp_Object *, Lisp_Object *, | |
68 | Lisp_Object *); | |
2f7c71a1 | 69 | static void foreach_window (struct frame *, |
f95464e4 | 70 | int (* fn) (struct window *, void *), |
2f7c71a1 | 71 | void *); |
f57e2426 J |
72 | static int foreach_window_1 (struct window *, |
73 | int (* fn) (struct window *, void *), | |
74 | void *); | |
75 | static Lisp_Object window_list_1 (Lisp_Object, Lisp_Object, Lisp_Object); | |
748fa866 DA |
76 | static int window_resize_check (struct window *, bool); |
77 | static void window_resize_apply (struct window *, bool); | |
7c82f3e2 | 78 | static Lisp_Object select_window (Lisp_Object, Lisp_Object, int); |
12384b01 | 79 | static void select_window_1 (Lisp_Object, bool); |
b7354ddf | 80 | |
25554267 DA |
81 | static struct window *set_window_fringes (struct window *, Lisp_Object, |
82 | Lisp_Object, Lisp_Object); | |
83 | static struct window *set_window_margins (struct window *, Lisp_Object, | |
84 | Lisp_Object); | |
85 | static struct window *set_window_scroll_bars (struct window *, Lisp_Object, | |
86 | Lisp_Object, Lisp_Object); | |
87 | static void apply_window_adjustment (struct window *); | |
88 | ||
7ab12479 JB |
89 | /* This is the window in which the terminal's cursor should |
90 | be left when nothing is being done with it. This must | |
91 | always be a leaf window, and its buffer is selected by | |
92 | the top level editing loop at the end of each command. | |
93 | ||
94 | This value is always the same as | |
44fa5b1e | 95 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
96 | Lisp_Object selected_window; |
97 | ||
67492200 GM |
98 | /* A list of all windows for use by next_window and Fwindow_list. |
99 | Functions creating or deleting windows should invalidate this cache | |
100 | by setting it to nil. */ | |
67492200 GM |
101 | Lisp_Object Vwindow_list; |
102 | ||
5500c422 GM |
103 | /* The mini-buffer window of the selected frame. |
104 | Note that you cannot test for mini-bufferness of an arbitrary window | |
105 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 JB |
106 | the selected window. */ |
107 | Lisp_Object minibuf_window; | |
108 | ||
3f49fddc KS |
109 | /* Non-nil means it is the window whose mode line should be |
110 | shown as the selected window when the minibuffer is selected. */ | |
3dbab091 | 111 | Lisp_Object minibuf_selected_window; |
3f49fddc | 112 | |
a58ec57d | 113 | /* Hook run at end of temp_output_buffer_show. */ |
955cbe7b | 114 | static Lisp_Object Qtemp_buffer_show_hook; |
a58ec57d | 115 | |
5b03d3c0 RS |
116 | /* Nonzero after init_window_once has finished. */ |
117 | static int window_initialized; | |
118 | ||
543f5fb1 | 119 | /* Hook to run when window config changes. */ |
eeca6f6f | 120 | static Lisp_Object Qwindow_configuration_change_hook; |
0d384044 | 121 | |
66d43aea | 122 | /* Used by the function window_scroll_pixel_based */ |
c876b227 | 123 | static int window_scroll_pixel_based_preserve_x; |
66fe93d1 | 124 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 125 | |
c876b227 | 126 | /* Same for window_scroll_line_based. */ |
d311d28c PE |
127 | static EMACS_INT window_scroll_preserve_hpos; |
128 | static EMACS_INT window_scroll_preserve_vpos; | |
f230ecc9 | 129 | \f |
84575e67 PE |
130 | static void |
131 | CHECK_WINDOW_CONFIGURATION (Lisp_Object x) | |
132 | { | |
133 | CHECK_TYPE (WINDOW_CONFIGURATIONP (x), Qwindow_configuration_p, x); | |
134 | } | |
135 | ||
e8c17b81 | 136 | /* These setters are used only in this file, so they can be private. */ |
b0ab8123 | 137 | static void |
e8c17b81 PE |
138 | wset_combination_limit (struct window *w, Lisp_Object val) |
139 | { | |
140 | w->combination_limit = val; | |
141 | } | |
b0ab8123 | 142 | static void |
e8c17b81 PE |
143 | wset_dedicated (struct window *w, Lisp_Object val) |
144 | { | |
145 | w->dedicated = val; | |
146 | } | |
b0ab8123 | 147 | static void |
e8c17b81 PE |
148 | wset_display_table (struct window *w, Lisp_Object val) |
149 | { | |
150 | w->display_table = val; | |
151 | } | |
b0ab8123 | 152 | static void |
e8c17b81 PE |
153 | wset_new_normal (struct window *w, Lisp_Object val) |
154 | { | |
155 | w->new_normal = val; | |
156 | } | |
b0ab8123 | 157 | static void |
e8c17b81 PE |
158 | wset_new_total (struct window *w, Lisp_Object val) |
159 | { | |
160 | w->new_total = val; | |
161 | } | |
b0ab8123 | 162 | static void |
e8c17b81 PE |
163 | wset_normal_cols (struct window *w, Lisp_Object val) |
164 | { | |
165 | w->normal_cols = val; | |
166 | } | |
b0ab8123 | 167 | static void |
e8c17b81 PE |
168 | wset_normal_lines (struct window *w, Lisp_Object val) |
169 | { | |
170 | w->normal_lines = val; | |
171 | } | |
b0ab8123 | 172 | static void |
e8c17b81 PE |
173 | wset_parent (struct window *w, Lisp_Object val) |
174 | { | |
175 | w->parent = val; | |
176 | } | |
b0ab8123 | 177 | static void |
e8c17b81 PE |
178 | wset_pointm (struct window *w, Lisp_Object val) |
179 | { | |
180 | w->pointm = val; | |
181 | } | |
b0ab8123 | 182 | static void |
e8c17b81 PE |
183 | wset_start (struct window *w, Lisp_Object val) |
184 | { | |
185 | w->start = val; | |
186 | } | |
b0ab8123 | 187 | static void |
e8c17b81 PE |
188 | wset_temslot (struct window *w, Lisp_Object val) |
189 | { | |
190 | w->temslot = val; | |
191 | } | |
b0ab8123 | 192 | static void |
e8c17b81 PE |
193 | wset_vertical_scroll_bar_type (struct window *w, Lisp_Object val) |
194 | { | |
195 | w->vertical_scroll_bar_type = val; | |
196 | } | |
b0ab8123 | 197 | static void |
e8c17b81 PE |
198 | wset_window_parameters (struct window *w, Lisp_Object val) |
199 | { | |
200 | w->window_parameters = val; | |
201 | } | |
e74aeda8 DA |
202 | static void |
203 | wset_combination (struct window *w, bool horflag, Lisp_Object val) | |
204 | { | |
205 | /* Since leaf windows never becomes non-leaf, there should | |
206 | be no buffer and markers in start and pointm fields of W. */ | |
207 | eassert (!BUFFERP (w->contents) && NILP (w->start) && NILP (w->pointm)); | |
208 | w->contents = val; | |
209 | /* When an internal window is deleted and VAL is nil, HORFLAG | |
210 | is meaningless. */ | |
211 | if (!NILP (val)) | |
212 | w->horizontal = horflag; | |
213 | } | |
e8c17b81 | 214 | |
170da1ec DA |
215 | /* Nonzero if leaf window W doesn't reflect the actual state |
216 | of displayed buffer due to its text or overlays change. */ | |
217 | ||
218 | bool | |
219 | window_outdated (struct window *w) | |
220 | { | |
221 | struct buffer *b = XBUFFER (w->contents); | |
222 | return (w->last_modified < BUF_MODIFF (b) | |
223 | || w->last_overlay_modified < BUF_OVERLAY_MODIFF (b)); | |
224 | } | |
225 | ||
52162052 MR |
226 | struct window * |
227 | decode_live_window (register Lisp_Object window) | |
f230ecc9 MR |
228 | { |
229 | if (NILP (window)) | |
230 | return XWINDOW (selected_window); | |
c876b227 | 231 | |
f230ecc9 MR |
232 | CHECK_LIVE_WINDOW (window); |
233 | return XWINDOW (window); | |
234 | } | |
235 | ||
b9e9df47 | 236 | struct window * |
f230ecc9 MR |
237 | decode_any_window (register Lisp_Object window) |
238 | { | |
6e5d1c12 CY |
239 | struct window *w; |
240 | ||
f230ecc9 MR |
241 | if (NILP (window)) |
242 | return XWINDOW (selected_window); | |
243 | ||
244 | CHECK_WINDOW (window); | |
6e5d1c12 | 245 | w = XWINDOW (window); |
6e5d1c12 | 246 | return w; |
f230ecc9 | 247 | } |
666e158e | 248 | |
b52d6985 | 249 | static struct window * |
52162052 MR |
250 | decode_valid_window (register Lisp_Object window) |
251 | { | |
252 | struct window *w; | |
253 | ||
254 | if (NILP (window)) | |
255 | return XWINDOW (selected_window); | |
256 | ||
257 | CHECK_VALID_WINDOW (window); | |
258 | w = XWINDOW (window); | |
259 | return w; | |
260 | } | |
261 | ||
98a07056 DA |
262 | /* Called when W's buffer slot is changed. ARG -1 means that W is about to |
263 | cease its buffer, and 1 means that W is about to set up the new one. */ | |
264 | ||
265 | static void | |
266 | adjust_window_count (struct window *w, int arg) | |
267 | { | |
268 | eassert (eabs (arg) == 1); | |
e74aeda8 | 269 | if (BUFFERP (w->contents)) |
98a07056 | 270 | { |
e74aeda8 | 271 | struct buffer *b = XBUFFER (w->contents); |
3f781c75 | 272 | |
98a07056 DA |
273 | if (b->base_buffer) |
274 | b = b->base_buffer; | |
275 | b->window_count += arg; | |
276 | eassert (b->window_count >= 0); | |
422ff52b | 277 | /* These should be recalculated by redisplay code. */ |
9d93ce29 | 278 | w->window_end_valid = 0; |
422ff52b | 279 | w->base_line_pos = 0; |
98a07056 DA |
280 | } |
281 | } | |
282 | ||
283 | /* Set W's buffer slot to VAL and recompute number | |
284 | of windows showing VAL if it is a buffer. */ | |
285 | ||
286 | void | |
287 | wset_buffer (struct window *w, Lisp_Object val) | |
288 | { | |
289 | adjust_window_count (w, -1); | |
e74aeda8 DA |
290 | if (BUFFERP (val)) |
291 | /* Make sure that we do not assign the buffer | |
292 | to an internal window. */ | |
293 | eassert (MARKERP (w->start) && MARKERP (w->pointm)); | |
294 | w->contents = val; | |
98a07056 DA |
295 | adjust_window_count (w, 1); |
296 | } | |
297 | ||
7ab12479 | 298 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, |
f230ecc9 | 299 | doc: /* Return t if OBJECT is a window and nil otherwise. */) |
5842a27b | 300 | (Lisp_Object object) |
7ab12479 | 301 | { |
413430c5 | 302 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
303 | } |
304 | ||
52162052 MR |
305 | DEFUN ("window-valid-p", Fwindow_valid_p, Swindow_valid_p, 1, 1, 0, |
306 | doc: /* Return t if OBJECT is a valid window and nil otherwise. | |
307 | A valid window is either a window that displays a buffer or an internal | |
308 | window. Deleted windows are not live. */) | |
309 | (Lisp_Object object) | |
310 | { | |
311 | return WINDOW_VALID_P (object) ? Qt : Qnil; | |
312 | } | |
313 | ||
806b4d9b | 314 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
f230ecc9 | 315 | doc: /* Return t if OBJECT is a live window and nil otherwise. |
49745b39 CY |
316 | A live window is a window that displays a buffer. |
317 | Internal windows and deleted windows are not live. */) | |
5842a27b | 318 | (Lisp_Object object) |
605be8af | 319 | { |
9e571f49 | 320 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af | 321 | } |
727e958e MR |
322 | \f |
323 | /* Frames and windows. */ | |
89bc0592 | 324 | DEFUN ("window-frame", Fwindow_frame, Swindow_frame, 0, 1, 0, |
727e958e | 325 | doc: /* Return the frame that window WINDOW is on. |
52162052 | 326 | WINDOW must be a valid window and defaults to the selected one. */) |
727e958e MR |
327 | (Lisp_Object window) |
328 | { | |
52162052 | 329 | return decode_valid_window (window)->frame; |
727e958e MR |
330 | } |
331 | ||
332 | DEFUN ("frame-root-window", Fframe_root_window, Sframe_root_window, 0, 1, 0, | |
87e68db4 JB |
333 | doc: /* Return the root window of FRAME-OR-WINDOW. |
334 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
49745b39 CY |
335 | With a frame argument, return that frame's root window. |
336 | With a window argument, return the root window of that window's frame. */) | |
727e958e MR |
337 | (Lisp_Object frame_or_window) |
338 | { | |
339 | Lisp_Object window; | |
340 | ||
341 | if (NILP (frame_or_window)) | |
e69b0960 | 342 | window = SELECTED_FRAME ()->root_window; |
52162052 MR |
343 | else if (WINDOW_VALID_P (frame_or_window)) |
344 | window = XFRAME (XWINDOW (frame_or_window)->frame)->root_window; | |
727e958e MR |
345 | else |
346 | { | |
347 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 348 | window = XFRAME (frame_or_window)->root_window; |
727e958e MR |
349 | } |
350 | ||
351 | return window; | |
352 | } | |
353 | ||
354 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, | |
49745b39 CY |
355 | doc: /* Return the minibuffer window for frame FRAME. |
356 | If FRAME is omitted or nil, it defaults to the selected frame. */) | |
727e958e MR |
357 | (Lisp_Object frame) |
358 | { | |
d9f07150 | 359 | return FRAME_MINIBUF_WINDOW (decode_live_frame (frame)); |
727e958e MR |
360 | } |
361 | ||
362 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, | |
363 | Swindow_minibuffer_p, 0, 1, 0, | |
364 | doc: /* Return non-nil if WINDOW is a minibuffer window. | |
52162052 | 365 | WINDOW must be a valid window and defaults to the selected one. */) |
727e958e MR |
366 | (Lisp_Object window) |
367 | { | |
52162052 | 368 | return MINI_WINDOW_P (decode_valid_window (window)) ? Qt : Qnil; |
727e958e MR |
369 | } |
370 | ||
371 | /* Don't move this to window.el - this must be a safe routine. */ | |
372 | DEFUN ("frame-first-window", Fframe_first_window, Sframe_first_window, 0, 1, 0, | |
87e68db4 JB |
373 | doc: /* Return the topmost, leftmost live window on FRAME-OR-WINDOW. |
374 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
52162052 MR |
375 | Else if FRAME-OR-WINDOW denotes a valid window, return the first window |
376 | of that window's frame. If FRAME-OR-WINDOW denotes a live frame, return | |
727e958e MR |
377 | the first window of that frame. */) |
378 | (Lisp_Object frame_or_window) | |
379 | { | |
380 | Lisp_Object window; | |
381 | ||
382 | if (NILP (frame_or_window)) | |
e69b0960 | 383 | window = SELECTED_FRAME ()->root_window; |
52162052 | 384 | else if (WINDOW_VALID_P (frame_or_window)) |
e69b0960 | 385 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window; |
727e958e MR |
386 | else |
387 | { | |
388 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 389 | window = XFRAME (frame_or_window)->root_window; |
727e958e MR |
390 | } |
391 | ||
e74aeda8 DA |
392 | while (WINDOWP (XWINDOW (window)->contents)) |
393 | window = XWINDOW (window)->contents; | |
727e958e MR |
394 | |
395 | return window; | |
396 | } | |
397 | ||
398 | DEFUN ("frame-selected-window", Fframe_selected_window, | |
399 | Sframe_selected_window, 0, 1, 0, | |
87e68db4 JB |
400 | doc: /* Return the selected window of FRAME-OR-WINDOW. |
401 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
52162052 MR |
402 | Else if FRAME-OR-WINDOW denotes a valid window, return the selected |
403 | window of that window's frame. If FRAME-OR-WINDOW denotes a live frame, | |
404 | return the selected window of that frame. */) | |
727e958e MR |
405 | (Lisp_Object frame_or_window) |
406 | { | |
407 | Lisp_Object window; | |
408 | ||
409 | if (NILP (frame_or_window)) | |
e69b0960 | 410 | window = SELECTED_FRAME ()->selected_window; |
52162052 | 411 | else if (WINDOW_VALID_P (frame_or_window)) |
e69b0960 | 412 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->selected_window; |
727e958e MR |
413 | else |
414 | { | |
415 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 416 | window = XFRAME (frame_or_window)->selected_window; |
727e958e MR |
417 | } |
418 | ||
419 | return window; | |
420 | } | |
421 | ||
422 | DEFUN ("set-frame-selected-window", Fset_frame_selected_window, | |
423 | Sset_frame_selected_window, 2, 3, 0, | |
424 | doc: /* Set selected window of FRAME to WINDOW. | |
425 | FRAME must be a live frame and defaults to the selected one. If FRAME | |
426 | is the selected frame, this makes WINDOW the selected window. Optional | |
427 | argument NORECORD non-nil means to neither change the order of recently | |
428 | selected windows nor the buffer list. WINDOW must denote a live window. | |
429 | Return WINDOW. */) | |
430 | (Lisp_Object frame, Lisp_Object window, Lisp_Object norecord) | |
431 | { | |
432 | if (NILP (frame)) | |
433 | frame = selected_frame; | |
434 | ||
435 | CHECK_LIVE_FRAME (frame); | |
436 | CHECK_LIVE_WINDOW (window); | |
437 | ||
438 | if (! EQ (frame, WINDOW_FRAME (XWINDOW (window)))) | |
439 | error ("In `set-frame-selected-window', WINDOW is not on FRAME"); | |
440 | ||
441 | if (EQ (frame, selected_frame)) | |
442 | return Fselect_window (window, norecord); | |
443 | else | |
f00af5b1 PE |
444 | { |
445 | fset_selected_window (XFRAME (frame), window); | |
446 | return window; | |
447 | } | |
727e958e MR |
448 | } |
449 | ||
450 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
451 | doc: /* Return the selected window. | |
452 | The selected window is the window in which the standard cursor for | |
453 | selected windows appears and to which many commands apply. */) | |
454 | (void) | |
455 | { | |
456 | return selected_window; | |
457 | } | |
458 | ||
9397e56f MR |
459 | int window_select_count; |
460 | ||
727e958e MR |
461 | /* If select_window is called with inhibit_point_swap non-zero it will |
462 | not store point of the old selected window's buffer back into that | |
463 | window's pointm slot. This is needed by Fset_window_configuration to | |
464 | avoid that the display routine is called with selected_window set to | |
465 | Qnil causing a subsequent crash. */ | |
466 | static Lisp_Object | |
467 | select_window (Lisp_Object window, Lisp_Object norecord, int inhibit_point_swap) | |
468 | { | |
469 | register struct window *w; | |
727e958e MR |
470 | struct frame *sf; |
471 | ||
472 | CHECK_LIVE_WINDOW (window); | |
473 | ||
474 | w = XWINDOW (window); | |
727e958e | 475 | |
734fbd86 | 476 | /* Make the selected window's buffer current. */ |
e74aeda8 | 477 | Fset_buffer (w->contents); |
734fbd86 | 478 | |
727e958e | 479 | if (EQ (window, selected_window) && !inhibit_point_swap) |
562c6ee9 SM |
480 | /* `switch-to-buffer' uses (select-window (selected-window)) as a "clever" |
481 | way to call record_buffer from Elisp, so it's important that we call | |
482 | record_buffer before returning here. */ | |
483 | goto record_and_return; | |
727e958e MR |
484 | |
485 | sf = SELECTED_FRAME (); | |
486 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
487 | { | |
f00af5b1 | 488 | fset_selected_window (XFRAME (WINDOW_FRAME (w)), window); |
727e958e MR |
489 | /* Use this rather than Fhandle_switch_frame |
490 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
491 | move around in the state where a minibuffer in a separate | |
492 | frame is active. */ | |
493 | Fselect_frame (WINDOW_FRAME (w), norecord); | |
494 | /* Fselect_frame called us back so we've done all the work already. */ | |
495 | eassert (EQ (window, selected_window)); | |
496 | return window; | |
497 | } | |
498 | else | |
f00af5b1 | 499 | fset_selected_window (sf, window); |
727e958e | 500 | |
1e101a4b | 501 | select_window_1 (window, inhibit_point_swap); |
562c6ee9 SM |
502 | bset_last_selected_window (XBUFFER (w->contents), window); |
503 | windows_or_buffers_changed++; | |
1e101a4b | 504 | |
562c6ee9 | 505 | record_and_return: |
7ffe7ef6 SM |
506 | /* record_buffer can run QUIT, so make sure it is run only after we have |
507 | re-established the invariant between selected_window and selected_frame, | |
508 | otherwise the temporary broken invariant might "escape" (bug#14161). */ | |
509 | if (NILP (norecord)) | |
510 | { | |
511 | w->use_time = ++window_select_count; | |
512 | record_buffer (w->contents); | |
513 | } | |
514 | ||
1e101a4b SM |
515 | return window; |
516 | } | |
517 | ||
518 | /* Select window with a minimum of fuss, i.e. don't record the change anywhere | |
3f781c75 | 519 | (not even for redisplay's benefit), and assume that the window's frame is |
1e101a4b | 520 | already selected. */ |
12384b01 | 521 | static void |
1e101a4b SM |
522 | select_window_1 (Lisp_Object window, bool inhibit_point_swap) |
523 | { | |
734fbd86 MR |
524 | /* Store the old selected window's buffer's point in pointm of the old |
525 | selected window. It belongs to that window, and when the window is | |
526 | not selected, must be in the window. */ | |
727e958e MR |
527 | if (!inhibit_point_swap) |
528 | { | |
1e101a4b | 529 | struct window *ow = XWINDOW (selected_window); |
e74aeda8 DA |
530 | if (BUFFERP (ow->contents)) |
531 | set_marker_both (ow->pointm, ow->contents, | |
532 | BUF_PT (XBUFFER (ow->contents)), | |
533 | BUF_PT_BYTE (XBUFFER (ow->contents))); | |
727e958e MR |
534 | } |
535 | ||
536 | selected_window = window; | |
727e958e MR |
537 | |
538 | /* Go to the point recorded in the window. | |
539 | This is important when the buffer is in more | |
540 | than one window. It also matters when | |
541 | redisplay_window has altered point after scrolling, | |
542 | because it makes the change only in the window. */ | |
032f7451 | 543 | set_point_from_marker (XWINDOW (window)->pointm); |
727e958e MR |
544 | } |
545 | ||
546 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, | |
94900bfe MR |
547 | doc: /* Select WINDOW which must be a live window. |
548 | Also make WINDOW's frame the selected frame and WINDOW that frame's | |
549 | selected window. In addition, make WINDOW's buffer current and set that | |
550 | buffer's value of `point' to the value of WINDOW's `window-point'. | |
551 | Return WINDOW. | |
727e958e MR |
552 | |
553 | Optional second arg NORECORD non-nil means do not put this buffer at the | |
554 | front of the buffer list and do not make this window the most recently | |
555 | selected one. | |
605be8af | 556 | |
727e958e MR |
557 | Note that the main editor command loop sets the current buffer to the |
558 | buffer of the selected window before each command. */) | |
559 | (register Lisp_Object window, Lisp_Object norecord) | |
560 | { | |
561 | return select_window (window, norecord, 0); | |
562 | } | |
563 | \f | |
bf60a96b | 564 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
49745b39 CY |
565 | doc: /* Return the buffer displayed in window WINDOW. |
566 | If WINDOW is omitted or nil, it defaults to the selected window. | |
567 | Return nil for an internal window or a deleted window. */) | |
bf60a96b MR |
568 | (Lisp_Object window) |
569 | { | |
e74aeda8 DA |
570 | struct window *w = decode_any_window (window); |
571 | return WINDOW_LEAF_P (w) ? w->contents : Qnil; | |
bf60a96b MR |
572 | } |
573 | ||
574 | DEFUN ("window-parent", Fwindow_parent, Swindow_parent, 0, 1, 0, | |
49745b39 | 575 | doc: /* Return the parent window of window WINDOW. |
52162052 | 576 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 | 577 | Return nil for a window with no parent (e.g. a root window). */) |
bf60a96b MR |
578 | (Lisp_Object window) |
579 | { | |
52162052 | 580 | return decode_valid_window (window)->parent; |
bf60a96b MR |
581 | } |
582 | ||
89bc0592 | 583 | DEFUN ("window-top-child", Fwindow_top_child, Swindow_top_child, 0, 1, 0, |
49745b39 | 584 | doc: /* Return the topmost 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 | horizontal combination. */) | |
bf60a96b MR |
589 | (Lisp_Object window) |
590 | { | |
e74aeda8 DA |
591 | struct window *w = decode_valid_window (window); |
592 | return WINDOW_VERTICAL_COMBINATION_P (w) ? w->contents : Qnil; | |
bf60a96b MR |
593 | } |
594 | ||
89bc0592 | 595 | DEFUN ("window-left-child", Fwindow_left_child, Swindow_left_child, 0, 1, 0, |
49745b39 | 596 | doc: /* Return the leftmost child window of window WINDOW. |
52162052 | 597 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 CY |
598 | Return nil if WINDOW is a live window (live windows have no children). |
599 | Return nil if WINDOW is an internal window whose children form a | |
600 | vertical combination. */) | |
bf60a96b MR |
601 | (Lisp_Object window) |
602 | { | |
e74aeda8 DA |
603 | struct window *w = decode_valid_window (window); |
604 | return WINDOW_HORIZONTAL_COMBINATION_P (w) ? w->contents : Qnil; | |
bf60a96b MR |
605 | } |
606 | ||
d68443dc | 607 | DEFUN ("window-next-sibling", Fwindow_next_sibling, Swindow_next_sibling, 0, 1, 0, |
49745b39 | 608 | doc: /* Return the next sibling window of window WINDOW. |
52162052 | 609 | WINDOW must be a valid window and defaults to the selected one. |
d68443dc | 610 | Return nil if WINDOW has no next sibling. */) |
bf60a96b MR |
611 | (Lisp_Object window) |
612 | { | |
52162052 | 613 | return decode_valid_window (window)->next; |
bf60a96b MR |
614 | } |
615 | ||
d68443dc | 616 | DEFUN ("window-prev-sibling", Fwindow_prev_sibling, Swindow_prev_sibling, 0, 1, 0, |
49745b39 | 617 | doc: /* Return the previous sibling window of window WINDOW. |
52162052 | 618 | WINDOW must be a valid window and defaults to the selected one. |
d68443dc | 619 | Return nil if WINDOW has no previous sibling. */) |
bf60a96b MR |
620 | (Lisp_Object window) |
621 | { | |
52162052 | 622 | return decode_valid_window (window)->prev; |
bf60a96b | 623 | } |
67492200 | 624 | |
72f94d4b | 625 | DEFUN ("window-combination-limit", Fwindow_combination_limit, Swindow_combination_limit, 1, 1, 0, |
b6f67890 | 626 | doc: /* Return combination limit of window WINDOW. |
095d384d | 627 | WINDOW must be a valid window used in horizontal or vertical combination. |
be7f5545 | 628 | If the return value is nil, child windows of WINDOW can be recombined with |
b6f67890 | 629 | WINDOW's siblings. A return value of t means that child windows of |
095d384d | 630 | WINDOW are never \(re-)combined with WINDOW's siblings. */) |
496e208e | 631 | (Lisp_Object window) |
7ab12479 | 632 | { |
095d384d DA |
633 | struct window *w; |
634 | ||
72f94d4b | 635 | CHECK_VALID_WINDOW (window); |
095d384d | 636 | w = XWINDOW (window); |
e74aeda8 | 637 | if (WINDOW_LEAF_P (w)) |
095d384d | 638 | error ("Combination limit is meaningful for internal windows only"); |
e74aeda8 | 639 | return w->combination_limit; |
7ab12479 | 640 | } |
53bb6b99 | 641 | |
b6f67890 | 642 | DEFUN ("set-window-combination-limit", Fset_window_combination_limit, Sset_window_combination_limit, 2, 2, 0, |
d2999b1a | 643 | doc: /* Set combination limit of window WINDOW to LIMIT; return LIMIT. |
095d384d | 644 | WINDOW must be a valid window used in horizontal or vertical combination. |
8e17c9ba MR |
645 | If LIMIT is nil, child windows of WINDOW can be recombined with WINDOW's |
646 | siblings. LIMIT t means that child windows of WINDOW are never | |
647 | \(re-)combined with WINDOW's siblings. Other values are reserved for | |
095d384d | 648 | future use. */) |
d2999b1a | 649 | (Lisp_Object window, Lisp_Object limit) |
b3a10345 | 650 | { |
095d384d DA |
651 | struct window *w; |
652 | ||
653 | CHECK_VALID_WINDOW (window); | |
654 | w = XWINDOW (window); | |
e74aeda8 | 655 | if (WINDOW_LEAF_P (w)) |
095d384d DA |
656 | error ("Combination limit is meaningful for internal windows only"); |
657 | wset_combination_limit (w, limit); | |
e8c17b81 | 658 | return limit; |
496e208e | 659 | } |
7bbc67d2 | 660 | |
496e208e | 661 | DEFUN ("window-use-time", Fwindow_use_time, Swindow_use_time, 0, 1, 0, |
49745b39 | 662 | doc: /* Return the use time of window WINDOW. |
52162052 | 663 | WINDOW must be a live window and defaults to the selected one. |
49745b39 CY |
664 | The window with the highest use time is the most recently selected |
665 | one. The window with the lowest use time is the least recently | |
666 | selected one. */) | |
496e208e MR |
667 | (Lisp_Object window) |
668 | { | |
52162052 | 669 | return make_number (decode_live_window (window)->use_time); |
496e208e | 670 | } |
abde8f8c | 671 | \f |
105216ed CY |
672 | DEFUN ("window-total-height", Fwindow_total_height, Swindow_total_height, 0, 1, 0, |
673 | doc: /* Return the total height, in lines, of window WINDOW. | |
52162052 | 674 | WINDOW must be a valid window and defaults to the selected one. |
b3a10345 | 675 | |
105216ed CY |
676 | The return value includes the mode line and header line, if any. |
677 | If WINDOW is an internal window, the total height is the height | |
678 | of the screen areas spanned by its children. | |
536833ab | 679 | |
105216ed CY |
680 | On a graphical display, this total height is reported as an |
681 | integer multiple of the default character height. */) | |
682 | (Lisp_Object window) | |
496e208e | 683 | { |
5f24fa51 | 684 | return make_number (decode_valid_window (window)->total_lines); |
105216ed | 685 | } |
536833ab | 686 | |
105216ed CY |
687 | DEFUN ("window-total-width", Fwindow_total_width, Swindow_total_width, 0, 1, 0, |
688 | doc: /* Return the total width, in columns, of window WINDOW. | |
52162052 | 689 | WINDOW must be a valid window and defaults to the selected one. |
b3a10345 | 690 | |
105216ed CY |
691 | The return value includes any vertical dividers or scroll bars |
692 | belonging to WINDOW. If WINDOW is an internal window, the total width | |
693 | is the width of the screen areas spanned by its children. | |
b3a10345 | 694 | |
105216ed CY |
695 | On a graphical display, this total width is reported as an |
696 | integer multiple of the default character width. */) | |
496e208e MR |
697 | (Lisp_Object window) |
698 | { | |
5f24fa51 | 699 | return make_number (decode_valid_window (window)->total_cols); |
abde8f8c | 700 | } |
b3a10345 | 701 | |
496e208e | 702 | DEFUN ("window-new-total", Fwindow_new_total, Swindow_new_total, 0, 1, 0, |
49745b39 | 703 | doc: /* Return the new total size of window WINDOW. |
52162052 | 704 | WINDOW must be a valid window and defaults to the selected one. */) |
496e208e MR |
705 | (Lisp_Object window) |
706 | { | |
52162052 | 707 | return decode_valid_window (window)->new_total; |
496e208e MR |
708 | } |
709 | ||
710 | DEFUN ("window-normal-size", Fwindow_normal_size, Swindow_normal_size, 0, 2, 0, | |
49745b39 | 711 | doc: /* Return the normal height of window WINDOW. |
52162052 | 712 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 | 713 | If HORIZONTAL is non-nil, return the normal width of WINDOW. */) |
496e208e MR |
714 | (Lisp_Object window, Lisp_Object horizontal) |
715 | { | |
52162052 | 716 | struct window *w = decode_valid_window (window); |
d3d50620 DA |
717 | |
718 | return NILP (horizontal) ? w->normal_lines : w->normal_cols; | |
496e208e MR |
719 | } |
720 | ||
721 | DEFUN ("window-new-normal", Fwindow_new_normal, Swindow_new_normal, 0, 1, 0, | |
49745b39 | 722 | doc: /* Return new normal size of window WINDOW. |
52162052 | 723 | WINDOW must be a valid window and defaults to the selected one. */) |
496e208e MR |
724 | (Lisp_Object window) |
725 | { | |
52162052 | 726 | return decode_valid_window (window)->new_normal; |
496e208e MR |
727 | } |
728 | ||
abde8f8c | 729 | DEFUN ("window-left-column", Fwindow_left_column, Swindow_left_column, 0, 1, 0, |
49745b39 | 730 | doc: /* Return left column of window WINDOW. |
105216ed CY |
731 | This is the distance, in columns, between the left edge of WINDOW and |
732 | the left edge of the frame's window area. For instance, the return | |
733 | value is 0 if there is no window to the left of WINDOW. | |
734 | ||
52162052 | 735 | WINDOW must be a valid window and defaults to the selected one. */) |
abde8f8c MR |
736 | (Lisp_Object window) |
737 | { | |
5f24fa51 | 738 | return make_number (decode_valid_window (window)->left_col); |
abde8f8c MR |
739 | } |
740 | ||
741 | DEFUN ("window-top-line", Fwindow_top_line, Swindow_top_line, 0, 1, 0, | |
49745b39 | 742 | doc: /* Return top line of window WINDOW. |
105216ed CY |
743 | This is the distance, in lines, between the top of WINDOW and the top |
744 | of the frame's window area. For instance, the return value is 0 if | |
745 | there is no window above WINDOW. | |
746 | ||
52162052 | 747 | WINDOW must be a valid window and defaults to the selected one. */) |
abde8f8c MR |
748 | (Lisp_Object window) |
749 | { | |
5f24fa51 | 750 | return make_number (decode_valid_window (window)->top_line); |
abde8f8c MR |
751 | } |
752 | ||
753 | /* Return the number of lines of W's body. Don't count any mode or | |
754 | header line of W. */ | |
755 | ||
46a4ce9e | 756 | static int |
abde8f8c MR |
757 | window_body_lines (struct window *w) |
758 | { | |
5f24fa51 | 759 | int height = w->total_lines; |
abde8f8c MR |
760 | |
761 | if (!MINI_WINDOW_P (w)) | |
762 | { | |
763 | if (WINDOW_WANTS_MODELINE_P (w)) | |
764 | --height; | |
765 | if (WINDOW_WANTS_HEADER_LINE_P (w)) | |
766 | --height; | |
767 | } | |
768 | ||
769 | return height; | |
770 | } | |
771 | ||
772 | /* Return the number of columns of W's body. Don't count columns | |
773 | occupied by the scroll bar or the vertical bar separating W from its | |
774 | right sibling. On window-systems don't count fringes or display | |
775 | margins either. */ | |
776 | ||
777 | int | |
778 | window_body_cols (struct window *w) | |
779 | { | |
780 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
5f24fa51 | 781 | int width = w->total_cols; |
abde8f8c MR |
782 | |
783 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) | |
784 | /* Scroll bars occupy a few columns. */ | |
785 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); | |
786 | else if (!FRAME_WINDOW_P (f) | |
787 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
788 | /* The column of `|' characters separating side-by-side windows | |
789 | occupies one column only. */ | |
790 | width -= 1; | |
791 | ||
f1665bdc EZ |
792 | /* Display margins cannot be used for normal text. */ |
793 | width -= WINDOW_LEFT_MARGIN_COLS (w) + WINDOW_RIGHT_MARGIN_COLS (w); | |
794 | ||
abde8f8c | 795 | if (FRAME_WINDOW_P (f)) |
f1665bdc EZ |
796 | /* On window-systems, fringes cannot be used for normal text. */ |
797 | width -= WINDOW_FRINGE_COLS (w); | |
abde8f8c MR |
798 | |
799 | return width; | |
800 | } | |
801 | ||
105216ed CY |
802 | DEFUN ("window-body-height", Fwindow_body_height, Swindow_body_height, 0, 1, 0, |
803 | doc: /* Return the height, in lines, of WINDOW's text area. | |
52162052 | 804 | WINDOW must be a live window and defaults to the selected one. |
89bd5ee1 | 805 | |
105216ed CY |
806 | The returned height does not include the mode line or header line. |
807 | On a graphical display, the height is expressed as an integer multiple | |
808 | of the default character height. If a line at the bottom of the text | |
809 | area is only partially visible, that counts as a whole line; to | |
810 | exclude partially-visible lines, use `window-text-height'. */) | |
811 | (Lisp_Object window) | |
abde8f8c | 812 | { |
b6a9e8b1 | 813 | return make_number (window_body_lines (decode_live_window (window))); |
105216ed | 814 | } |
abde8f8c | 815 | |
105216ed CY |
816 | DEFUN ("window-body-width", Fwindow_body_width, Swindow_body_width, 0, 1, 0, |
817 | doc: /* Return the width, in columns, of WINDOW's text area. | |
52162052 | 818 | WINDOW must be a live window and defaults to the selected one. |
105216ed CY |
819 | |
820 | The return value does not include any vertical dividers, fringe or | |
821 | marginal areas, or scroll bars. On a graphical display, the width is | |
822 | expressed as an integer multiple of the default character width. */) | |
823 | (Lisp_Object window) | |
824 | { | |
b6a9e8b1 | 825 | return make_number (window_body_cols (decode_live_window (window))); |
abde8f8c | 826 | } |
536833ab | 827 | |
7ab12479 | 828 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 | 829 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
496e208e | 830 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 831 | (Lisp_Object window) |
7ab12479 | 832 | { |
52162052 | 833 | return make_number (decode_live_window (window)->hscroll); |
7ab12479 JB |
834 | } |
835 | ||
24a212eb PE |
836 | /* Set W's horizontal scroll amount to HSCROLL clipped to a reasonable |
837 | range, returning the new amount as a fixnum. */ | |
838 | static Lisp_Object | |
839 | set_window_hscroll (struct window *w, EMACS_INT hscroll) | |
840 | { | |
4e71fd89 PE |
841 | /* Horizontal scrolling has problems with large scroll amounts. |
842 | It's too slow with long lines, and even with small lines the | |
843 | display can be messed up. For now, though, impose only the limits | |
844 | required by the internal representation: horizontal scrolling must | |
845 | fit in fixnum (since it's visible to Elisp) and into ptrdiff_t | |
846 | (since it's stored in a ptrdiff_t). */ | |
847 | ptrdiff_t hscroll_max = min (MOST_POSITIVE_FIXNUM, PTRDIFF_MAX); | |
848 | ptrdiff_t new_hscroll = clip_to_bounds (0, hscroll, hscroll_max); | |
24a212eb PE |
849 | |
850 | /* Prevent redisplay shortcuts when changing the hscroll. */ | |
851 | if (w->hscroll != new_hscroll) | |
e74aeda8 | 852 | XBUFFER (w->contents)->prevent_redisplay_optimizations_p = 1; |
24a212eb PE |
853 | |
854 | w->hscroll = new_hscroll; | |
855 | return make_number (new_hscroll); | |
856 | } | |
857 | ||
7ab12479 | 858 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, |
fdb82f93 | 859 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
52162052 | 860 | WINDOW must be a live window and defaults to the selected one. |
24a212eb PE |
861 | Clip the number to a reasonable value if out of range. |
862 | Return the new number. NCOL should be zero or positive. | |
ebadb1e4 EZ |
863 | |
864 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 865 | window so that the location of point moves off-window. */) |
5842a27b | 866 | (Lisp_Object window, Lisp_Object ncol) |
7ab12479 | 867 | { |
b7826503 | 868 | CHECK_NUMBER (ncol); |
89bc0592 | 869 | return set_window_hscroll (decode_live_window (window), XINT (ncol)); |
7ab12479 JB |
870 | } |
871 | ||
190eb263 RS |
872 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
873 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 874 | doc: /* Return WINDOW's redisplay end trigger value. |
52162052 | 875 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 876 | See `set-window-redisplay-end-trigger' for more information. */) |
5842a27b | 877 | (Lisp_Object window) |
190eb263 | 878 | { |
52162052 | 879 | return decode_live_window (window)->redisplay_end_trigger; |
190eb263 RS |
880 | } |
881 | ||
882 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
883 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 | 884 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
52162052 MR |
885 | WINDOW must be a live window and defaults to the selected one. VALUE |
886 | should be a buffer position (typically a marker) or nil. If it is a | |
887 | buffer position, then if redisplay in WINDOW reaches a position beyond | |
888 | VALUE, the functions in `redisplay-end-trigger-functions' are called | |
889 | with two arguments: WINDOW, and the end trigger value. Afterwards the | |
890 | end-trigger value is reset to nil. */) | |
5842a27b | 891 | (register Lisp_Object window, Lisp_Object value) |
190eb263 | 892 | { |
e8c17b81 PE |
893 | wset_redisplay_end_trigger (decode_live_window (window), value); |
894 | return value; | |
190eb263 RS |
895 | } |
896 | ||
7ab12479 | 897 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 | 898 | doc: /* Return a list of the edge coordinates of WINDOW. |
52162052 MR |
899 | WINDOW must be a valid window and defaults to the selected one. |
900 | ||
901 | The returned list has the form (LEFT TOP RIGHT BOTTOM). TOP and BOTTOM | |
902 | count by lines, and LEFT and RIGHT count by columns, all relative to 0, | |
903 | 0 at top left corner of frame. | |
904 | ||
905 | RIGHT is one more than the rightmost column occupied by WINDOW. BOTTOM | |
906 | is one more than the bottommost row occupied by WINDOW. The edges | |
907 | include the space used by WINDOW's scroll bar, display margins, fringes, | |
908 | header line, and/or mode line. For the edges of just the text area, use | |
909 | `window-inside-edges'. */) | |
5842a27b | 910 | (Lisp_Object window) |
7ab12479 | 911 | { |
52162052 | 912 | register struct window *w = decode_valid_window (window); |
7ab12479 | 913 | |
1479c557 PE |
914 | return list4i (WINDOW_LEFT_EDGE_COL (w), WINDOW_TOP_EDGE_LINE (w), |
915 | WINDOW_RIGHT_EDGE_COL (w), WINDOW_BOTTOM_EDGE_LINE (w)); | |
7ab12479 JB |
916 | } |
917 | ||
c99a9eb3 RS |
918 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
919 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
52162052 MR |
920 | WINDOW must be a valid window and defaults to the selected one. |
921 | ||
922 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
923 | 0, 0 at the top left corner of the frame. | |
b35ac83e CY |
924 | |
925 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
926 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
927 | The pixel edges include the space used by WINDOW's scroll bar, display | |
928 | margins, fringes, header line, and/or mode line. For the pixel edges | |
929 | of just the text area, use `window-inside-pixel-edges'. */) | |
5842a27b | 930 | (Lisp_Object window) |
c99a9eb3 | 931 | { |
52162052 | 932 | register struct window *w = decode_valid_window (window); |
c99a9eb3 | 933 | |
1479c557 PE |
934 | return list4i (WINDOW_LEFT_EDGE_X (w), WINDOW_TOP_EDGE_Y (w), |
935 | WINDOW_RIGHT_EDGE_X (w), WINDOW_BOTTOM_EDGE_Y (w)); | |
c99a9eb3 RS |
936 | } |
937 | ||
9d5405ec | 938 | static void |
5e617bc2 | 939 | calc_absolute_offset (struct window *w, int *add_x, int *add_y) |
9d5405ec | 940 | { |
d3d50620 | 941 | struct frame *f = XFRAME (w->frame); |
9d5405ec J |
942 | *add_y = f->top_pos; |
943 | #ifdef FRAME_MENUBAR_HEIGHT | |
944 | *add_y += FRAME_MENUBAR_HEIGHT (f); | |
945 | #endif | |
bfeabdc3 JD |
946 | #ifdef FRAME_TOOLBAR_TOP_HEIGHT |
947 | *add_y += FRAME_TOOLBAR_TOP_HEIGHT (f); | |
948 | #elif FRAME_TOOLBAR_HEIGHT | |
9d5405ec J |
949 | *add_y += FRAME_TOOLBAR_HEIGHT (f); |
950 | #endif | |
951 | #ifdef FRAME_NS_TITLEBAR_HEIGHT | |
952 | *add_y += FRAME_NS_TITLEBAR_HEIGHT (f); | |
953 | #endif | |
954 | *add_x = f->left_pos; | |
bfeabdc3 JD |
955 | #ifdef FRAME_TOOLBAR_LEFT_WIDTH |
956 | *add_x += FRAME_TOOLBAR_LEFT_WIDTH (f); | |
957 | #endif | |
9d5405ec J |
958 | } |
959 | ||
960 | DEFUN ("window-absolute-pixel-edges", Fwindow_absolute_pixel_edges, | |
961 | Swindow_absolute_pixel_edges, 0, 1, 0, | |
962 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
52162052 MR |
963 | WINDOW must be a valid window and defaults to the selected one. |
964 | ||
965 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
966 | 0, 0 at the top left corner of the display. | |
9d5405ec J |
967 | |
968 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
969 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
970 | The pixel edges include the space used by WINDOW's scroll bar, display | |
971 | margins, fringes, header line, and/or mode line. For the pixel edges | |
c49d071a | 972 | of just the text area, use `window-inside-absolute-pixel-edges'. */) |
5842a27b | 973 | (Lisp_Object window) |
9d5405ec | 974 | { |
52162052 | 975 | register struct window *w = decode_valid_window (window); |
9d5405ec | 976 | int add_x, add_y; |
89bc0592 | 977 | |
ed3751c8 | 978 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec | 979 | |
1479c557 PE |
980 | return list4i (WINDOW_LEFT_EDGE_X (w) + add_x, |
981 | WINDOW_TOP_EDGE_Y (w) + add_y, | |
982 | WINDOW_RIGHT_EDGE_X (w) + add_x, | |
983 | WINDOW_BOTTOM_EDGE_Y (w) + add_y); | |
9d5405ec J |
984 | } |
985 | ||
c99a9eb3 RS |
986 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, |
987 | doc: /* Return a list of the edge coordinates of WINDOW. | |
52162052 MR |
988 | WINDOW must be a live window and defaults to the selected one. |
989 | ||
990 | The returned list has the form (LEFT TOP RIGHT BOTTOM). TOP and BOTTOM | |
991 | count by lines, and LEFT and RIGHT count by columns, all relative to 0, | |
992 | 0 at top left corner of frame. | |
b35ac83e CY |
993 | |
994 | RIGHT is one more than the rightmost column of WINDOW's text area. | |
52162052 MR |
995 | BOTTOM is one more than the bottommost row of WINDOW's text area. The |
996 | inside edges do not include the space used by the WINDOW's scroll bar, | |
997 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 998 | (Lisp_Object window) |
c99a9eb3 | 999 | { |
52162052 | 1000 | register struct window *w = decode_live_window (window); |
c99a9eb3 | 1001 | |
1479c557 PE |
1002 | return list4i ((WINDOW_BOX_LEFT_EDGE_COL (w) |
1003 | + WINDOW_LEFT_MARGIN_COLS (w) | |
1004 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
1005 | (WINDOW_TOP_EDGE_LINE (w) | |
1006 | + WINDOW_HEADER_LINE_LINES (w)), | |
1007 | (WINDOW_BOX_RIGHT_EDGE_COL (w) | |
1008 | - WINDOW_RIGHT_MARGIN_COLS (w) | |
1009 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
1010 | (WINDOW_BOTTOM_EDGE_LINE (w) | |
1011 | - WINDOW_MODE_LINE_LINES (w))); | |
c99a9eb3 RS |
1012 | } |
1013 | ||
1014 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
2fbdc249 | 1015 | doc: /* Return a list of the edge pixel coordinates of WINDOW's text area. |
52162052 MR |
1016 | WINDOW must be a live window and defaults to the selected one. |
1017 | ||
1018 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
1019 | (0,0) at the top left corner of the frame's window area. | |
b35ac83e CY |
1020 | |
1021 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
1022 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
1023 | The inside edges do not include the space used by WINDOW's scroll bar, | |
c99a9eb3 | 1024 | display margins, fringes, header line, and/or mode line. */) |
5842a27b | 1025 | (Lisp_Object window) |
c99a9eb3 | 1026 | { |
52162052 | 1027 | register struct window *w = decode_live_window (window); |
c99a9eb3 | 1028 | |
1479c557 PE |
1029 | return list4i ((WINDOW_BOX_LEFT_EDGE_X (w) |
1030 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
1031 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
1032 | (WINDOW_TOP_EDGE_Y (w) | |
1033 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
1034 | (WINDOW_BOX_RIGHT_EDGE_X (w) | |
1035 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
1036 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
1037 | (WINDOW_BOTTOM_EDGE_Y (w) | |
1038 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
c99a9eb3 RS |
1039 | } |
1040 | ||
9d5405ec J |
1041 | DEFUN ("window-inside-absolute-pixel-edges", |
1042 | Fwindow_inside_absolute_pixel_edges, | |
1043 | Swindow_inside_absolute_pixel_edges, 0, 1, 0, | |
2fbdc249 | 1044 | doc: /* Return a list of the edge pixel coordinates of WINDOW's text area. |
52162052 MR |
1045 | WINDOW must be a live window and defaults to the selected one. |
1046 | ||
1047 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
1048 | (0,0) at the top left corner of the frame's window area. | |
9d5405ec J |
1049 | |
1050 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
1051 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
1052 | The inside edges do not include the space used by WINDOW's scroll bar, | |
1053 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 1054 | (Lisp_Object window) |
9d5405ec | 1055 | { |
52162052 | 1056 | register struct window *w = decode_live_window (window); |
9d5405ec | 1057 | int add_x, add_y; |
89bc0592 | 1058 | |
ed3751c8 | 1059 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec | 1060 | |
1479c557 PE |
1061 | return list4i ((WINDOW_BOX_LEFT_EDGE_X (w) |
1062 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
1063 | + WINDOW_LEFT_FRINGE_WIDTH (w) + add_x), | |
1064 | (WINDOW_TOP_EDGE_Y (w) | |
1065 | + WINDOW_HEADER_LINE_HEIGHT (w) + add_y), | |
1066 | (WINDOW_BOX_RIGHT_EDGE_X (w) | |
1067 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
1068 | - WINDOW_RIGHT_FRINGE_WIDTH (w) + add_x), | |
1069 | (WINDOW_BOTTOM_EDGE_Y (w) | |
1070 | - WINDOW_MODE_LINE_HEIGHT (w) + add_y)); | |
9d5405ec J |
1071 | } |
1072 | ||
9173a8fb | 1073 | /* Test if the character at column X, row Y is within window W. |
341f3858 | 1074 | If it is not, return ON_NOTHING; |
9173a8fb | 1075 | if it is in the window's text area, return ON_TEXT; |
341f3858 | 1076 | if it is on the window's modeline, return ON_MODE_LINE; |
d5783c40 | 1077 | if it is on the border between the window and its right sibling, |
341f3858 | 1078 | return ON_VERTICAL_BORDER. |
9173a8fb | 1079 | if it is on a scroll bar, return ON_SCROLL_BAR. |
341f3858 | 1080 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 1081 | if it is in left or right fringe of the window, |
9173a8fb | 1082 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE; |
49b996e7 | 1083 | if it is in the marginal area to the left/right of the window, |
9173a8fb | 1084 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN. |
5500c422 GM |
1085 | |
1086 | X and Y are frame relative pixel coordinates. */ | |
1087 | ||
7442878f | 1088 | static enum window_part |
9173a8fb | 1089 | coordinates_in_window (register struct window *w, int x, int y) |
d5783c40 | 1090 | { |
b0228ace | 1091 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
7442878f | 1092 | enum window_part part; |
949cf20f | 1093 | int ux = FRAME_COLUMN_WIDTH (f); |
c7b08b0d MR |
1094 | int left_x = WINDOW_LEFT_EDGE_X (w); |
1095 | int right_x = WINDOW_RIGHT_EDGE_X (w); | |
1096 | int top_y = WINDOW_TOP_EDGE_Y (w); | |
1097 | int bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
dad75588 GM |
1098 | /* The width of the area where the vertical line can be dragged. |
1099 | (Between mode lines for instance. */ | |
1100 | int grabbable_width = ux; | |
949cf20f | 1101 | int lmargin_width, rmargin_width, text_left, text_right; |
9173a8fb | 1102 | |
c7b08b0d MR |
1103 | /* Outside any interesting row or column? */ |
1104 | if (y < top_y || y >= bottom_y || x < left_x || x >= right_x) | |
9173a8fb | 1105 | return ON_NOTHING; |
b0228ace | 1106 | |
c7b08b0d MR |
1107 | /* On the mode line or header line? */ |
1108 | if ((WINDOW_WANTS_MODELINE_P (w) | |
1109 | && y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w) | |
1110 | && (part = ON_MODE_LINE)) | |
1111 | || (WINDOW_WANTS_HEADER_LINE_P (w) | |
1112 | && y < top_y + CURRENT_HEADER_LINE_HEIGHT (w) | |
1113 | && (part = ON_HEADER_LINE))) | |
1114 | { | |
1115 | /* If it's under/over the scroll bar portion of the mode/header | |
1116 | line, say it's on the vertical line. That's to be able to | |
1117 | resize windows horizontally in case we're using toolkit scroll | |
1118 | bars. Note: If scrollbars are on the left, the window that | |
1119 | must be eventually resized is that on the left of WINDOW. */ | |
1120 | if ((WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) | |
1121 | && !WINDOW_LEFTMOST_P (w) | |
1122 | && eabs (x - left_x) < grabbable_width) | |
1123 | || (!WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) | |
1124 | && !WINDOW_RIGHTMOST_P (w) | |
1125 | && eabs (x - right_x) < grabbable_width)) | |
1126 | return ON_VERTICAL_BORDER; | |
1127 | else | |
1128 | return part; | |
1129 | } | |
1130 | ||
466539bc EZ |
1131 | /* In what's below, we subtract 1 when computing right_x because we |
1132 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
1133 | if (w->pseudo_window_p) |
1134 | { | |
1135 | left_x = 0; | |
949cf20f | 1136 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
5500c422 GM |
1137 | } |
1138 | else | |
1139 | { | |
949cf20f KS |
1140 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
1141 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
5500c422 | 1142 | } |
37962e60 | 1143 | |
949cf20f | 1144 | /* Outside any interesting column? */ |
9173a8fb CY |
1145 | if (x < left_x || x > right_x) |
1146 | return ON_SCROLL_BAR; | |
949cf20f KS |
1147 | |
1148 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
1149 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 1150 | |
949cf20f KS |
1151 | text_left = window_box_left (w, TEXT_AREA); |
1152 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
1153 | ||
1154 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 1155 | { |
447e9da0 | 1156 | if (!w->pseudo_window_p |
949cf20f | 1157 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 1158 | && !WINDOW_RIGHTMOST_P (w) |
9173a8fb CY |
1159 | && (eabs (x - right_x) < grabbable_width)) |
1160 | return ON_VERTICAL_BORDER; | |
fbad6f9a | 1161 | } |
9173a8fb CY |
1162 | /* Need to say "x > right_x" rather than >=, since on character |
1163 | terminals, the vertical line's x coordinate is right_x. */ | |
1164 | else if (!w->pseudo_window_p | |
1165 | && !WINDOW_RIGHTMOST_P (w) | |
1166 | && x > right_x - ux) | |
1167 | return ON_VERTICAL_BORDER; | |
1168 | ||
1169 | if (x < text_left) | |
949cf20f KS |
1170 | { |
1171 | if (lmargin_width > 0 | |
1172 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1173 | ? (x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) |
1174 | : (x < left_x + lmargin_width))) | |
1175 | return ON_LEFT_MARGIN; | |
1176 | ||
949cf20f KS |
1177 | return ON_LEFT_FRINGE; |
1178 | } | |
1179 | ||
9173a8fb | 1180 | if (x >= text_right) |
949cf20f KS |
1181 | { |
1182 | if (rmargin_width > 0 | |
1183 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1184 | ? (x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) |
1185 | : (x >= right_x - rmargin_width))) | |
1186 | return ON_RIGHT_MARGIN; | |
1187 | ||
949cf20f KS |
1188 | return ON_RIGHT_FRINGE; |
1189 | } | |
1190 | ||
1191 | /* Everything special ruled out - must be on text area */ | |
949cf20f | 1192 | return ON_TEXT; |
d5783c40 JB |
1193 | } |
1194 | ||
9173a8fb CY |
1195 | /* Take X is the frame-relative pixel x-coordinate, and return the |
1196 | x-coordinate relative to part PART of window W. */ | |
1197 | int | |
1198 | window_relative_x_coord (struct window *w, enum window_part part, int x) | |
1199 | { | |
1200 | int left_x = (w->pseudo_window_p) ? 0 : WINDOW_BOX_LEFT_EDGE_X (w); | |
1201 | ||
1202 | switch (part) | |
1203 | { | |
1204 | case ON_TEXT: | |
1205 | return x - window_box_left (w, TEXT_AREA); | |
1206 | ||
1207 | case ON_LEFT_FRINGE: | |
1208 | return x - left_x; | |
1209 | ||
1210 | case ON_RIGHT_FRINGE: | |
1211 | return x - left_x - WINDOW_LEFT_FRINGE_WIDTH (w); | |
1212 | ||
1213 | case ON_LEFT_MARGIN: | |
1214 | return (x - left_x | |
1215 | - ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1216 | ? WINDOW_LEFT_FRINGE_WIDTH (w) : 0)); | |
1217 | ||
1218 | case ON_RIGHT_MARGIN: | |
1219 | return (x + 1 | |
1220 | - ((w->pseudo_window_p) | |
1221 | ? WINDOW_TOTAL_WIDTH (w) | |
1222 | : WINDOW_BOX_RIGHT_EDGE_X (w)) | |
1223 | + window_box_width (w, RIGHT_MARGIN_AREA) | |
1224 | + ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1225 | ? WINDOW_RIGHT_FRINGE_WIDTH (w) : 0)); | |
1226 | } | |
1227 | ||
1228 | /* ON_SCROLL_BAR, ON_NOTHING, and ON_VERTICAL_BORDER: */ | |
1229 | return 0; | |
1230 | } | |
1231 | ||
b0228ace | 1232 | |
d5783c40 | 1233 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
1234 | Scoordinates_in_window_p, 2, 2, 0, |
1235 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
52162052 | 1236 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1237 | COORDINATES is a cons of the form (X . Y), X and Y being distances |
1238 | measured in characters from the upper-left corner of the frame. | |
23fe745a | 1239 | \(0 . 0) denotes the character in the upper left corner of the |
fdb82f93 PJ |
1240 | frame. |
1241 | If COORDINATES are in the text portion of WINDOW, | |
1242 | the coordinates relative to the window are returned. | |
1243 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
1244 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
1245 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
1246 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 1247 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
1248 | `vertical-line' is returned. |
1249 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
1250 | or `right-margin' is returned. */) | |
5842a27b | 1251 | (register Lisp_Object coordinates, Lisp_Object window) |
d5783c40 | 1252 | { |
5500c422 GM |
1253 | struct window *w; |
1254 | struct frame *f; | |
d5783c40 | 1255 | int x, y; |
5500c422 | 1256 | Lisp_Object lx, ly; |
d5783c40 | 1257 | |
52162052 | 1258 | w = decode_live_window (window); |
d3d50620 | 1259 | f = XFRAME (w->frame); |
b7826503 | 1260 | CHECK_CONS (coordinates); |
5500c422 GM |
1261 | lx = Fcar (coordinates); |
1262 | ly = Fcdr (coordinates); | |
b7826503 PJ |
1263 | CHECK_NUMBER_OR_FLOAT (lx); |
1264 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
1265 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
1266 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 | 1267 | |
9173a8fb | 1268 | switch (coordinates_in_window (w, x, y)) |
d5783c40 | 1269 | { |
7442878f | 1270 | case ON_NOTHING: |
d5783c40 JB |
1271 | return Qnil; |
1272 | ||
7442878f | 1273 | case ON_TEXT: |
9173a8fb CY |
1274 | /* Convert X and Y to window relative pixel coordinates, and |
1275 | return the canonical char units. */ | |
1276 | x -= window_box_left (w, TEXT_AREA); | |
1277 | y -= WINDOW_TOP_EDGE_Y (w); | |
949cf20f KS |
1278 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
1279 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 1280 | |
7442878f | 1281 | case ON_MODE_LINE: |
d5783c40 | 1282 | return Qmode_line; |
37962e60 | 1283 | |
7442878f | 1284 | case ON_VERTICAL_BORDER: |
e5d77022 | 1285 | return Qvertical_line; |
d5783c40 | 1286 | |
7442878f | 1287 | case ON_HEADER_LINE: |
045dee35 | 1288 | return Qheader_line; |
5500c422 | 1289 | |
7442878f GM |
1290 | case ON_LEFT_FRINGE: |
1291 | return Qleft_fringe; | |
177c0ea7 | 1292 | |
7442878f GM |
1293 | case ON_RIGHT_FRINGE: |
1294 | return Qright_fringe; | |
fbad6f9a | 1295 | |
49b996e7 GM |
1296 | case ON_LEFT_MARGIN: |
1297 | return Qleft_margin; | |
177c0ea7 | 1298 | |
49b996e7 GM |
1299 | case ON_RIGHT_MARGIN: |
1300 | return Qright_margin; | |
1301 | ||
6487f669 RS |
1302 | case ON_SCROLL_BAR: |
1303 | /* Historically we are supposed to return nil in this case. */ | |
1304 | return Qnil; | |
1305 | ||
d5783c40 | 1306 | default: |
1088b922 | 1307 | emacs_abort (); |
d5783c40 JB |
1308 | } |
1309 | } | |
1310 | ||
67492200 GM |
1311 | |
1312 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
1313 | Check if window W contains coordinates specified by USER_DATA which |
1314 | is actually a pointer to a struct check_window_data CW. | |
1315 | ||
1316 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
1317 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 1318 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
1319 | zero from this function to stop iterating over windows. */ |
1320 | ||
1321 | struct check_window_data | |
1322 | { | |
1323 | Lisp_Object *window; | |
9173a8fb | 1324 | int x, y; |
341f3858 | 1325 | enum window_part *part; |
f95464e4 | 1326 | }; |
67492200 GM |
1327 | |
1328 | static int | |
971de7fb | 1329 | check_window_containing (struct window *w, void *user_data) |
67492200 | 1330 | { |
7d652d97 | 1331 | struct check_window_data *cw = user_data; |
7442878f GM |
1332 | enum window_part found; |
1333 | int continue_p = 1; | |
67492200 | 1334 | |
f95464e4 | 1335 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1336 | if (found != ON_NOTHING) |
67492200 | 1337 | { |
341f3858 | 1338 | *cw->part = found; |
f95464e4 | 1339 | XSETWINDOW (*cw->window, w); |
7442878f | 1340 | continue_p = 0; |
67492200 | 1341 | } |
177c0ea7 | 1342 | |
7442878f | 1343 | return continue_p; |
67492200 GM |
1344 | } |
1345 | ||
1346 | ||
5500c422 | 1347 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1348 | return it as a Lisp_Object. |
1349 | ||
1350 | If X, Y is on one of the window's special `window_part' elements, | |
9173a8fb | 1351 | set *PART to the id of that element. |
949cf20f | 1352 | |
341f3858 | 1353 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1354 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1355 | ||
1356 | This function was previously implemented with a loop cycling over | |
1357 | windows with Fnext_window, and starting with the frame's selected | |
1358 | window. It turned out that this doesn't work with an | |
1359 | implementation of next_window using Vwindow_list, because | |
1360 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1361 | tree of F when this function is called asynchronously from | |
1362 | note_mouse_highlight. The original loop didn't terminate in this | |
1363 | case. */ | |
5500c422 | 1364 | |
7ab12479 | 1365 | Lisp_Object |
9173a8fb | 1366 | window_from_coordinates (struct frame *f, int x, int y, |
748fa866 | 1367 | enum window_part *part, bool tool_bar_p) |
7ab12479 | 1368 | { |
67492200 | 1369 | Lisp_Object window; |
f95464e4 | 1370 | struct check_window_data cw; |
341f3858 KS |
1371 | enum window_part dummy; |
1372 | ||
1373 | if (part == 0) | |
1374 | part = &dummy; | |
5500c422 | 1375 | |
67492200 | 1376 | window = Qnil; |
9173a8fb | 1377 | cw.window = &window, cw.x = x, cw.y = y; cw.part = part; |
f95464e4 | 1378 | foreach_window (f, check_window_containing, &cw); |
177c0ea7 | 1379 | |
742516e0 | 1380 | #if defined (HAVE_WINDOW_SYSTEM) && ! defined (USE_GTK) && ! defined (HAVE_NS) |
67492200 GM |
1381 | /* If not found above, see if it's in the tool bar window, if a tool |
1382 | bar exists. */ | |
1383 | if (NILP (window) | |
1384 | && tool_bar_p | |
e69b0960 DA |
1385 | && WINDOWP (f->tool_bar_window) |
1386 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 | |
1387 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), x, y) | |
7442878f | 1388 | != ON_NOTHING)) |
5500c422 | 1389 | { |
341f3858 | 1390 | *part = ON_TEXT; |
e69b0960 | 1391 | window = f->tool_bar_window; |
5500c422 | 1392 | } |
742516e0 | 1393 | #endif |
37962e60 | 1394 | |
67492200 | 1395 | return window; |
7ab12479 JB |
1396 | } |
1397 | ||
ab17c3f2 | 1398 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 | 1399 | doc: /* Return window containing coordinates X and Y on FRAME. |
496e208e | 1400 | FRAME must be a live frame and defaults to the selected one. |
fdb82f93 PJ |
1401 | The top left corner of the frame is considered to be row 0, |
1402 | column 0. */) | |
5842a27b | 1403 | (Lisp_Object x, Lisp_Object y, Lisp_Object frame) |
7ab12479 | 1404 | { |
d9f07150 | 1405 | struct frame *f = decode_live_frame (frame); |
7ab12479 | 1406 | |
5500c422 | 1407 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1408 | CHECK_NUMBER_OR_FLOAT (x); |
1409 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1410 | |
177c0ea7 | 1411 | return window_from_coordinates (f, |
2c77cf3b RS |
1412 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1413 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1414 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1415 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
9173a8fb | 1416 | 0, 0); |
7ab12479 JB |
1417 | } |
1418 | ||
1419 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1420 | doc: /* Return current value of point in WINDOW. |
496e208e | 1421 | WINDOW must be a live window and defaults to the selected one. |
c85322d0 | 1422 | |
5481664a MR |
1423 | For a nonselected window, this is the value point would have if that |
1424 | window were selected. | |
1425 | ||
1426 | Note that, when WINDOW is selected, the value returned is the same as | |
1427 | that returned by `point' for WINDOW's buffer. It would be more strictly | |
9fc9a531 | 1428 | correct to return the top-level value of `point', outside of any |
5481664a | 1429 | `save-excursion' forms. But that is hard to define. */) |
5842a27b | 1430 | (Lisp_Object window) |
7ab12479 | 1431 | { |
52162052 | 1432 | register struct window *w = decode_live_window (window); |
7ab12479 | 1433 | |
5481664a | 1434 | if (w == XWINDOW (selected_window)) |
e74aeda8 | 1435 | return make_number (BUF_PT (XBUFFER (w->contents))); |
5481664a MR |
1436 | else |
1437 | return Fmarker_position (w->pointm); | |
7ab12479 JB |
1438 | } |
1439 | ||
1440 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1441 | doc: /* Return position at which display currently starts in WINDOW. |
496e208e | 1442 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 1443 | This is updated by redisplay or by calling `set-window-start'. */) |
5842a27b | 1444 | (Lisp_Object window) |
7ab12479 | 1445 | { |
52162052 | 1446 | return Fmarker_position (decode_live_window (window)->start); |
7ab12479 JB |
1447 | } |
1448 | ||
8646118f RS |
1449 | /* This is text temporarily removed from the doc string below. |
1450 | ||
fdb82f93 PJ |
1451 | This function returns nil if the position is not currently known. |
1452 | That happens when redisplay is preempted and doesn't finish. | |
1453 | If in that case you want to compute where the end of the window would | |
1454 | have been if redisplay had finished, do this: | |
1455 | (save-excursion | |
1456 | (goto-char (window-start window)) | |
1457 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1458 | (point))") */ |
1459 | ||
478292ed | 1460 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1461 | doc: /* Return position at which display currently ends in WINDOW. |
496e208e | 1462 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1463 | This is updated by redisplay, when it runs to completion. |
1464 | Simply changing the buffer text or setting `window-start' | |
1465 | does not update this value. | |
87e68db4 | 1466 | Return nil if there is no recorded value. (This can happen if the |
a0a37a6f | 1467 | last redisplay of WINDOW was preempted, and did not finish.) |
fdb82f93 PJ |
1468 | If UPDATE is non-nil, compute the up-to-date position |
1469 | if it isn't already recorded. */) | |
5842a27b | 1470 | (Lisp_Object window, Lisp_Object update) |
7ab12479 JB |
1471 | { |
1472 | Lisp_Object value; | |
52162052 | 1473 | struct window *w = decode_live_window (window); |
5a41ab94 | 1474 | Lisp_Object buf; |
31790df3 | 1475 | struct buffer *b; |
5a41ab94 | 1476 | |
e74aeda8 | 1477 | buf = w->contents; |
b7826503 | 1478 | CHECK_BUFFER (buf); |
b3a10345 | 1479 | b = XBUFFER (buf); |
5a41ab94 | 1480 | |
478292ed | 1481 | if (! NILP (update) |
fcc1fe85 EZ |
1482 | && (windows_or_buffers_changed |
1483 | || !w->window_end_valid | |
1484 | || b->clip_changed | |
1485 | || b->prevent_redisplay_optimizations_p | |
170da1ec | 1486 | || window_outdated (w)) |
41791a20 | 1487 | && !noninteractive) |
478292ed | 1488 | { |
cbc099e5 GM |
1489 | struct text_pos startp; |
1490 | struct it it; | |
b3a10345 | 1491 | struct buffer *old_buffer = NULL; |
57b3e30b | 1492 | void *itdata = NULL; |
b3a10345 KS |
1493 | |
1494 | /* Cannot use Fvertical_motion because that function doesn't | |
1495 | cope with variable-height lines. */ | |
1496 | if (b != current_buffer) | |
1497 | { | |
1498 | old_buffer = current_buffer; | |
1499 | set_buffer_internal (b); | |
1500 | } | |
2d6d9df0 GM |
1501 | |
1502 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1503 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1504 | `-l' containing a call to `rmail' with subsequent other |
1505 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1506 | rmail had already narrowed the buffer. */ |
cf91889a | 1507 | CLIP_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 | |
02455cb6 | 1521 | XSETINT (value, BUF_Z (b) - 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 | |
f74de345 | 1534 | /* Type of POS is checked by Fgoto_char or set_marker_restricted ... */ |
799417bd | 1535 | |
5481664a MR |
1536 | if (w == XWINDOW (selected_window)) |
1537 | { | |
e74aeda8 | 1538 | if (XBUFFER (w->contents) == current_buffer) |
5481664a MR |
1539 | Fgoto_char (pos); |
1540 | else | |
1541 | { | |
1542 | struct buffer *old_buffer = current_buffer; | |
1543 | ||
f74de345 DA |
1544 | /* ... but here we want to catch type error before buffer change. */ |
1545 | CHECK_NUMBER_COERCE_MARKER (pos); | |
e74aeda8 | 1546 | set_buffer_internal (XBUFFER (w->contents)); |
5481664a MR |
1547 | Fgoto_char (pos); |
1548 | set_buffer_internal (old_buffer); | |
1549 | } | |
1550 | } | |
1551 | else | |
1552 | { | |
e74aeda8 | 1553 | set_marker_restricted (w->pointm, pos, w->contents); |
5481664a MR |
1554 | /* We have to make sure that redisplay updates the window to show |
1555 | the new value of point. */ | |
1556 | ++windows_or_buffers_changed; | |
1557 | } | |
177c0ea7 | 1558 | |
7ab12479 JB |
1559 | return pos; |
1560 | } | |
1561 | ||
1562 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1563 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
52162052 MR |
1564 | WINDOW must be a live window and defaults to the selected one. Return |
1565 | POS. Optional third arg NOFORCE non-nil inhibits next redisplay from | |
d653c8cc | 1566 | overriding motion of point in order to display at this exact start. */) |
5842a27b | 1567 | (Lisp_Object window, Lisp_Object pos, Lisp_Object noforce) |
7ab12479 | 1568 | { |
52162052 | 1569 | register struct window *w = decode_live_window (window); |
7ab12479 | 1570 | |
e74aeda8 | 1571 | set_marker_restricted (w->start, pos, w->contents); |
f74de345 | 1572 | /* This is not right, but much easier than doing what is right. */ |
c98ff5dd | 1573 | w->start_at_line_beg = 0; |
265a9e55 | 1574 | if (NILP (noforce)) |
c98ff5dd DA |
1575 | w->force_start = 1; |
1576 | w->update_mode_line = 1; | |
ae966a86 | 1577 | if (w != XWINDOW (selected_window)) |
628fdc56 | 1578 | /* Enforce full redisplay. FIXME: make it more selective. */ |
62c07cc7 | 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, | |
ba59bd80 | 1597 | the return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), |
496e208e MR |
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 | |
ba59bd80 EZ |
1601 | off-window at the top and bottom of the screen line ("row") containing |
1602 | POS, ROWH is the visible height of that row, and VPOS is the row number | |
1603 | \(zero-based). */) | |
496e208e MR |
1604 | (Lisp_Object pos, Lisp_Object window, Lisp_Object partially) |
1605 | { | |
1606 | register struct window *w; | |
1607 | register EMACS_INT posint; | |
1608 | register struct buffer *buf; | |
1609 | struct text_pos top; | |
1610 | Lisp_Object in_window = Qnil; | |
1611 | int rtop, rbot, rowh, vpos, fully_p = 1; | |
1612 | int x, y; | |
1613 | ||
52162052 | 1614 | w = decode_live_window (window); |
e74aeda8 | 1615 | buf = XBUFFER (w->contents); |
d3d50620 | 1616 | SET_TEXT_POS_FROM_MARKER (top, w->start); |
496e208e MR |
1617 | |
1618 | if (EQ (pos, Qt)) | |
1619 | posint = -1; | |
1620 | else if (!NILP (pos)) | |
1621 | { | |
1622 | CHECK_NUMBER_COERCE_MARKER (pos); | |
1623 | posint = XINT (pos); | |
1624 | } | |
1625 | else if (w == XWINDOW (selected_window)) | |
1626 | posint = PT; | |
1627 | else | |
4c1acb95 | 1628 | posint = marker_position (w->pointm); |
496e208e MR |
1629 | |
1630 | /* If position is above window start or outside buffer boundaries, | |
1631 | or if window start is out of range, position is not visible. */ | |
1632 | if ((EQ (pos, Qt) | |
1633 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
1634 | && CHARPOS (top) >= BUF_BEGV (buf) | |
1635 | && CHARPOS (top) <= BUF_ZV (buf) | |
1636 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) | |
1637 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) | |
1638 | in_window = Qt; | |
1639 | ||
1640 | if (!NILP (in_window) && !NILP (partially)) | |
1641 | { | |
1642 | Lisp_Object part = Qnil; | |
1643 | if (!fully_p) | |
1479c557 | 1644 | part = list4i (rtop, rbot, rowh, vpos); |
496e208e MR |
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 | ||
e74aeda8 DA |
1684 | CHECK_BUFFER (w->contents); |
1685 | b = XBUFFER (w->contents); | |
496e208e MR |
1686 | |
1687 | /* Fail if current matrix is not up-to-date. */ | |
9d93ce29 | 1688 | if (!w->window_end_valid |
fcc1fe85 EZ |
1689 | || windows_or_buffers_changed |
1690 | || b->clip_changed | |
1691 | || b->prevent_redisplay_optimizations_p | |
170da1ec | 1692 | || window_outdated (w)) |
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); | |
1479c557 | 1710 | return row->enabled_p ? list4i (row->height, 0, 0, 0) : Qnil; |
496e208e MR |
1711 | } |
1712 | ||
1713 | if (EQ (line, Qmode_line)) | |
1714 | { | |
1715 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); | |
89bc0592 | 1716 | return (row->enabled_p ? |
1479c557 PE |
1717 | list4i (row->height, |
1718 | 0, /* not accurate */ | |
1719 | (WINDOW_HEADER_LINE_HEIGHT (w) | |
1720 | + window_text_bottom_y (w)), | |
1721 | 0) | |
89bc0592 | 1722 | : Qnil); |
496e208e MR |
1723 | } |
1724 | ||
1725 | CHECK_NUMBER (line); | |
1726 | n = XINT (line); | |
1727 | ||
1728 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
1729 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
1730 | max_y = window_text_bottom_y (w); | |
1731 | i = 0; | |
1732 | ||
1733 | while ((n < 0 || i < n) | |
1734 | && row <= end_row && row->enabled_p | |
1735 | && row->y + row->height < max_y) | |
1736 | row++, i++; | |
1737 | ||
1738 | if (row > end_row || !row->enabled_p) | |
1739 | return Qnil; | |
1740 | ||
1741 | if (++n < 0) | |
1742 | { | |
1743 | if (-n > i) | |
1744 | return Qnil; | |
1745 | row += n; | |
1746 | i += n; | |
1747 | } | |
1748 | ||
1749 | found_row: | |
1750 | crop = max (0, (row->y + row->height) - max_y); | |
1479c557 | 1751 | return list4i (row->height + min (0, row->y) - crop, i, row->y, crop); |
496e208e | 1752 | } |
d653c8cc | 1753 | |
a7ca3326 | 1754 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, |
d653c8cc MR |
1755 | 0, 1, 0, |
1756 | doc: /* Return non-nil when WINDOW is dedicated to its buffer. | |
12bb3111 | 1757 | More precisely, return the value assigned by the last call of |
7bfac547 MR |
1758 | `set-window-dedicated-p' for WINDOW. Return nil if that function was |
1759 | never called with WINDOW as its argument, or the value set by that | |
52162052 MR |
1760 | function was internally reset since its last call. WINDOW must be a |
1761 | live window and defaults to the selected one. | |
7bfac547 MR |
1762 | |
1763 | When a window is dedicated to its buffer, `display-buffer' will refrain | |
1764 | from displaying another buffer in it. `get-lru-window' and | |
1765 | `get-largest-window' treat dedicated windows specially. | |
1766 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1767 | `kill-buffer' can delete a dedicated window and the containing frame. | |
1768 | ||
1769 | Functions like `set-window-buffer' may change the buffer displayed by a | |
1770 | window, unless that window is "strongly" dedicated to its buffer, that | |
1771 | is the value returned by `window-dedicated-p' is t. */) | |
5842a27b | 1772 | (Lisp_Object window) |
7ab12479 | 1773 | { |
52162052 | 1774 | return decode_live_window (window)->dedicated; |
7ab12479 JB |
1775 | } |
1776 | ||
d207b766 RS |
1777 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1778 | Sset_window_dedicated_p, 2, 2, 0, | |
d653c8cc | 1779 | doc: /* Mark WINDOW as dedicated according to FLAG. |
496e208e MR |
1780 | WINDOW must be a live window and defaults to the selected one. FLAG |
1781 | non-nil means mark WINDOW as dedicated to its buffer. FLAG nil means | |
1782 | mark WINDOW as non-dedicated. Return FLAG. | |
d653c8cc | 1783 | |
7bfac547 MR |
1784 | When a window is dedicated to its buffer, `display-buffer' will refrain |
1785 | from displaying another buffer in it. `get-lru-window' and | |
1786 | `get-largest-window' treat dedicated windows specially. | |
496e208e MR |
1787 | `delete-windows-on', `replace-buffer-in-windows', `quit-window', |
1788 | `quit-restore-window' and `kill-buffer' can delete a dedicated window | |
1789 | and the containing frame. | |
7bfac547 MR |
1790 | |
1791 | As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to | |
1792 | its buffer. Functions like `set-window-buffer' may change the buffer | |
1793 | displayed by a window, unless that window is strongly dedicated to its | |
1794 | buffer. If and when `set-window-buffer' displays another buffer in a | |
496e208e | 1795 | window, it also makes sure that the window is no more dedicated. */) |
5842a27b | 1796 | (Lisp_Object window, Lisp_Object flag) |
7ab12479 | 1797 | { |
e8c17b81 PE |
1798 | wset_dedicated (decode_live_window (window), flag); |
1799 | return flag; | |
7ab12479 JB |
1800 | } |
1801 | ||
496e208e MR |
1802 | DEFUN ("window-prev-buffers", Fwindow_prev_buffers, Swindow_prev_buffers, |
1803 | 0, 1, 0, | |
1804 | doc: /* Return buffers previously shown in WINDOW. | |
1805 | WINDOW must be a live window and defaults to the selected one. | |
1806 | ||
94e0933e CY |
1807 | The return value is a list of elements (BUFFER WINDOW-START POS), |
1808 | where BUFFER is a buffer, WINDOW-START is the start position of the | |
1809 | window for that buffer, and POS is a window-specific point value. */) | |
496e208e MR |
1810 | (Lisp_Object window) |
1811 | { | |
52162052 | 1812 | return decode_live_window (window)->prev_buffers; |
496e208e MR |
1813 | } |
1814 | ||
1815 | DEFUN ("set-window-prev-buffers", Fset_window_prev_buffers, | |
1816 | Sset_window_prev_buffers, 2, 2, 0, | |
1817 | doc: /* Set WINDOW's previous buffers to PREV-BUFFERS. | |
94e0933e | 1818 | WINDOW must be a live window and defaults to the selected one. |
496e208e | 1819 | |
94e0933e CY |
1820 | PREV-BUFFERS should be a list of elements (BUFFER WINDOW-START POS), |
1821 | where BUFFER is a buffer, WINDOW-START is the start position of the | |
1822 | window for that buffer, and POS is a window-specific point value. */) | |
496e208e MR |
1823 | (Lisp_Object window, Lisp_Object prev_buffers) |
1824 | { | |
e8c17b81 PE |
1825 | wset_prev_buffers (decode_live_window (window), prev_buffers); |
1826 | return prev_buffers; | |
496e208e MR |
1827 | } |
1828 | ||
1829 | DEFUN ("window-next-buffers", Fwindow_next_buffers, Swindow_next_buffers, | |
1830 | 0, 1, 0, | |
1831 | doc: /* Return list of buffers recently re-shown in WINDOW. | |
1832 | WINDOW must be a live window and defaults to the selected one. */) | |
1833 | (Lisp_Object window) | |
1834 | { | |
52162052 | 1835 | return decode_live_window (window)->next_buffers; |
496e208e MR |
1836 | } |
1837 | ||
1838 | DEFUN ("set-window-next-buffers", Fset_window_next_buffers, | |
1839 | Sset_window_next_buffers, 2, 2, 0, | |
1840 | doc: /* Set WINDOW's next buffers to NEXT-BUFFERS. | |
94e0933e CY |
1841 | WINDOW must be a live window and defaults to the selected one. |
1842 | NEXT-BUFFERS should be a list of buffers. */) | |
496e208e MR |
1843 | (Lisp_Object window, Lisp_Object next_buffers) |
1844 | { | |
e8c17b81 PE |
1845 | wset_next_buffers (decode_live_window (window), next_buffers); |
1846 | return next_buffers; | |
496e208e | 1847 | } |
d653c8cc | 1848 | |
cfbb2395 JB |
1849 | DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters, |
1850 | 0, 1, 0, | |
d653c8cc | 1851 | doc: /* Return the parameters of WINDOW and their values. |
52162052 MR |
1852 | WINDOW must be a valid window and defaults to the selected one. The |
1853 | return value is a list of elements of the form (PARAMETER . VALUE). */) | |
5842a27b | 1854 | (Lisp_Object window) |
cfbb2395 | 1855 | { |
52162052 | 1856 | return Fcopy_alist (decode_valid_window (window)->window_parameters); |
cfbb2395 JB |
1857 | } |
1858 | ||
1859 | DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter, | |
1860 | 2, 2, 0, | |
d653c8cc | 1861 | doc: /* Return WINDOW's value for PARAMETER. |
a8c729af | 1862 | WINDOW can be any window and defaults to the selected one. */) |
5842a27b | 1863 | (Lisp_Object window, Lisp_Object parameter) |
cfbb2395 | 1864 | { |
927abf37 JB |
1865 | Lisp_Object result; |
1866 | ||
a8c729af | 1867 | result = Fassq (parameter, decode_any_window (window)->window_parameters); |
927abf37 | 1868 | return CDR_SAFE (result); |
cfbb2395 JB |
1869 | } |
1870 | ||
cfbb2395 JB |
1871 | DEFUN ("set-window-parameter", Fset_window_parameter, |
1872 | Sset_window_parameter, 3, 3, 0, | |
d653c8cc | 1873 | doc: /* Set WINDOW's value of PARAMETER to VALUE. |
a8c729af | 1874 | WINDOW can be any window and defaults to the selected one. |
52162052 | 1875 | Return VALUE. */) |
5842a27b | 1876 | (Lisp_Object window, Lisp_Object parameter, Lisp_Object value) |
cfbb2395 | 1877 | { |
a8c729af | 1878 | register struct window *w = decode_any_window (window); |
cfbb2395 JB |
1879 | Lisp_Object old_alist_elt; |
1880 | ||
d3d50620 | 1881 | old_alist_elt = Fassq (parameter, w->window_parameters); |
12bb3111 | 1882 | if (NILP (old_alist_elt)) |
e8c17b81 PE |
1883 | wset_window_parameters |
1884 | (w, Fcons (Fcons (parameter, value), w->window_parameters)); | |
cfbb2395 JB |
1885 | else |
1886 | Fsetcdr (old_alist_elt, value); | |
927abf37 | 1887 | return value; |
cfbb2395 JB |
1888 | } |
1889 | ||
7ab12479 JB |
1890 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, |
1891 | 0, 1, 0, | |
c85322d0 | 1892 | doc: /* Return the display-table that WINDOW is using. |
52162052 | 1893 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 1894 | (Lisp_Object window) |
7ab12479 | 1895 | { |
52162052 | 1896 | return decode_live_window (window)->display_table; |
7ab12479 JB |
1897 | } |
1898 | ||
5500c422 GM |
1899 | /* Get the display table for use on window W. This is either W's |
1900 | display table or W's buffer's display table. Ignore the specified | |
1901 | tables if they are not valid; if no valid table is specified, | |
1902 | return 0. */ | |
7ab12479 | 1903 | |
319315f1 | 1904 | struct Lisp_Char_Table * |
971de7fb | 1905 | window_display_table (struct window *w) |
7ab12479 | 1906 | { |
c756cdbe GM |
1907 | struct Lisp_Char_Table *dp = NULL; |
1908 | ||
d3d50620 DA |
1909 | if (DISP_TABLE_P (w->display_table)) |
1910 | dp = XCHAR_TABLE (w->display_table); | |
e74aeda8 | 1911 | else if (BUFFERP (w->contents)) |
c756cdbe | 1912 | { |
e74aeda8 | 1913 | struct buffer *b = XBUFFER (w->contents); |
177c0ea7 | 1914 | |
4b4deea2 TT |
1915 | if (DISP_TABLE_P (BVAR (b, display_table))) |
1916 | dp = XCHAR_TABLE (BVAR (b, display_table)); | |
c756cdbe GM |
1917 | else if (DISP_TABLE_P (Vstandard_display_table)) |
1918 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1919 | } | |
171d003c | 1920 | |
c756cdbe | 1921 | return dp; |
7ab12479 JB |
1922 | } |
1923 | ||
3a2712f9 | 1924 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
52162052 MR |
1925 | doc: /* Set WINDOW's display-table to TABLE. |
1926 | WINDOW must be a live window and defaults to the selected one. */) | |
5842a27b | 1927 | (register Lisp_Object window, Lisp_Object table) |
7ab12479 | 1928 | { |
e8c17b81 PE |
1929 | wset_display_table (decode_live_window (window), table); |
1930 | return table; | |
7ab12479 JB |
1931 | } |
1932 | \f | |
562dd5e9 | 1933 | /* Record info on buffer window W is displaying |
7ab12479 | 1934 | when it is about to cease to display that buffer. */ |
dfcf069d | 1935 | static void |
971de7fb | 1936 | unshow_buffer (register struct window *w) |
7ab12479 | 1937 | { |
e74aeda8 DA |
1938 | Lisp_Object buf = w->contents; |
1939 | struct buffer *b = XBUFFER (buf); | |
7ab12479 | 1940 | |
e74aeda8 | 1941 | eassert (b == XMARKER (w->pointm)->buffer); |
7ab12479 | 1942 | |
573f41ab | 1943 | #if 0 |
7ab12479 | 1944 | if (w == XWINDOW (selected_window) |
e74aeda8 | 1945 | || ! EQ (buf, XWINDOW (selected_window)->contents)) |
7ab12479 JB |
1946 | /* Do this except when the selected window's buffer |
1947 | is being removed from some other window. */ | |
573f41ab RS |
1948 | #endif |
1949 | /* last_window_start records the start position that this buffer | |
1950 | had in the last window to be disconnected from it. | |
1951 | Now that this statement is unconditional, | |
1952 | it is possible for the buffer to be displayed in the | |
1953 | selected window, while last_window_start reflects another | |
1954 | window which was recently showing the same buffer. | |
1955 | Some people might say that might be a good thing. Let's see. */ | |
d3d50620 | 1956 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1957 | |
1958 | /* Point in the selected window's buffer | |
1959 | is actually stored in that buffer, and the window's pointm isn't used. | |
1960 | So don't clobber point in that buffer. */ | |
e74aeda8 | 1961 | if (! EQ (buf, XWINDOW (selected_window)->contents) |
c4b6914d MR |
1962 | /* Don't clobber point in current buffer either (this could be |
1963 | useful in connection with bug#12208). | |
1964 | && XBUFFER (buf) != current_buffer */ | |
719eaeb1 | 1965 | /* This line helps to fix Horsley's testbug.el bug. */ |
4b4deea2 TT |
1966 | && !(WINDOWP (BVAR (b, last_selected_window)) |
1967 | && w != XWINDOW (BVAR (b, last_selected_window)) | |
e74aeda8 | 1968 | && EQ (buf, XWINDOW (BVAR (b, last_selected_window))->contents))) |
b73ea88e RS |
1969 | temp_set_point_both (b, |
1970 | clip_to_bounds (BUF_BEGV (b), | |
4c1acb95 | 1971 | marker_position (w->pointm), |
b73ea88e RS |
1972 | BUF_ZV (b)), |
1973 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
d3d50620 | 1974 | marker_byte_position (w->pointm), |
b73ea88e | 1975 | BUF_ZV_BYTE (b))); |
177c0ea7 | 1976 | |
4b4deea2 TT |
1977 | if (WINDOWP (BVAR (b, last_selected_window)) |
1978 | && w == XWINDOW (BVAR (b, last_selected_window))) | |
39eb03f1 | 1979 | bset_last_selected_window (b, Qnil); |
7ab12479 JB |
1980 | } |
1981 | ||
1a13852e MR |
1982 | /* Put NEW into the window structure in place of OLD. SETFLAG zero |
1983 | means change window structure only. Otherwise store geometry and | |
1984 | other settings as well. */ | |
dfcf069d | 1985 | static void |
1a13852e | 1986 | replace_window (Lisp_Object old, Lisp_Object new, int setflag) |
7ab12479 JB |
1987 | { |
1988 | register Lisp_Object tem; | |
1a13852e | 1989 | register struct window *o = XWINDOW (old), *n = XWINDOW (new); |
7ab12479 | 1990 | |
1a13852e MR |
1991 | /* If OLD is its frame's root window, then NEW is the new |
1992 | root window for that frame. */ | |
d3d50620 | 1993 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
f00af5b1 | 1994 | fset_root_window (XFRAME (o->frame), new); |
077288cf | 1995 | |
5f24fa51 DA |
1996 | if (setflag) |
1997 | { | |
1998 | n->left_col = o->left_col; | |
1999 | n->top_line = o->top_line; | |
2000 | n->total_cols = o->total_cols; | |
2001 | n->total_lines = o->total_lines; | |
e8c17b81 PE |
2002 | wset_normal_cols (n, o->normal_cols); |
2003 | wset_normal_cols (o, make_float (1.0)); | |
2004 | wset_normal_lines (n, o->normal_lines); | |
2005 | wset_normal_lines (o, make_float (1.0)); | |
1a13852e MR |
2006 | n->desired_matrix = n->current_matrix = 0; |
2007 | n->vscroll = 0; | |
2008 | memset (&n->cursor, 0, sizeof (n->cursor)); | |
1a13852e | 2009 | memset (&n->phys_cursor, 0, sizeof (n->phys_cursor)); |
c80016b3 | 2010 | n->last_cursor_vpos = 0; |
1a13852e MR |
2011 | n->phys_cursor_type = -1; |
2012 | n->phys_cursor_width = -1; | |
2013 | n->must_be_updated_p = 0; | |
2014 | n->pseudo_window_p = 0; | |
02455cb6 DA |
2015 | n->window_end_vpos = 0; |
2016 | n->window_end_pos = 0; | |
9d93ce29 | 2017 | n->window_end_valid = 0; |
1a13852e MR |
2018 | } |
2019 | ||
d3d50620 | 2020 | tem = o->next; |
e8c17b81 | 2021 | wset_next (n, tem); |
265a9e55 | 2022 | if (!NILP (tem)) |
e8c17b81 | 2023 | wset_prev (XWINDOW (tem), new); |
7ab12479 | 2024 | |
d3d50620 | 2025 | tem = o->prev; |
e8c17b81 | 2026 | wset_prev (n, tem); |
265a9e55 | 2027 | if (!NILP (tem)) |
e8c17b81 | 2028 | wset_next (XWINDOW (tem), new); |
7ab12479 | 2029 | |
d3d50620 | 2030 | tem = o->parent; |
e8c17b81 | 2031 | wset_parent (n, tem); |
e74aeda8 DA |
2032 | if (!NILP (tem) && EQ (XWINDOW (tem)->contents, old)) |
2033 | wset_combination (XWINDOW (tem), XWINDOW (tem)->horizontal, new); | |
1a13852e MR |
2034 | } |
2035 | ||
2036 | /* If window WINDOW and its parent window are iso-combined, merge | |
2037 | WINDOW's children into those of its parent window and mark WINDOW as | |
2038 | deleted. */ | |
2039 | ||
2040 | static void | |
2041 | recombine_windows (Lisp_Object window) | |
2042 | { | |
2043 | struct window *w, *p, *c; | |
2044 | Lisp_Object parent, child; | |
748fa866 | 2045 | bool horflag; |
1a13852e MR |
2046 | |
2047 | w = XWINDOW (window); | |
d3d50620 DA |
2048 | parent = w->parent; |
2049 | if (!NILP (parent) && NILP (w->combination_limit)) | |
1a13852e MR |
2050 | { |
2051 | p = XWINDOW (parent); | |
e74aeda8 DA |
2052 | if (WINDOWP (p->contents) && WINDOWP (w->contents) |
2053 | && p->horizontal == w->horizontal) | |
1a13852e MR |
2054 | /* WINDOW and PARENT are both either a vertical or a horizontal |
2055 | combination. */ | |
2056 | { | |
e74aeda8 DA |
2057 | horflag = WINDOW_HORIZONTAL_COMBINATION_P (w); |
2058 | child = w->contents; | |
1a13852e MR |
2059 | c = XWINDOW (child); |
2060 | ||
2061 | /* Splice WINDOW's children into its parent's children and | |
2062 | assign new normal sizes. */ | |
d3d50620 | 2063 | if (NILP (w->prev)) |
e74aeda8 | 2064 | wset_combination (p, horflag, child); |
1a13852e MR |
2065 | else |
2066 | { | |
e8c17b81 PE |
2067 | wset_prev (c, w->prev); |
2068 | wset_next (XWINDOW (w->prev), child); | |
1a13852e MR |
2069 | } |
2070 | ||
2071 | while (c) | |
2072 | { | |
e8c17b81 | 2073 | wset_parent (c, parent); |
1a13852e MR |
2074 | |
2075 | if (horflag) | |
e8c17b81 | 2076 | wset_normal_cols (c, |
5f24fa51 DA |
2077 | make_float ((double) c->total_cols |
2078 | / (double) p->total_cols)); | |
1a13852e | 2079 | else |
e8c17b81 | 2080 | wset_normal_lines (c, |
5f24fa51 DA |
2081 | make_float ((double) c->total_lines |
2082 | / (double) p->total_lines)); | |
1a13852e | 2083 | |
d3d50620 | 2084 | if (NILP (c->next)) |
1a13852e | 2085 | { |
d3d50620 | 2086 | if (!NILP (w->next)) |
1a13852e | 2087 | { |
e8c17b81 PE |
2088 | wset_next (c, w->next); |
2089 | wset_prev (XWINDOW (c->next), child); | |
1a13852e MR |
2090 | } |
2091 | ||
2092 | c = 0; | |
2093 | } | |
2094 | else | |
2095 | { | |
d3d50620 | 2096 | child = c->next; |
1a13852e MR |
2097 | c = XWINDOW (child); |
2098 | } | |
2099 | } | |
7ab12479 | 2100 | |
1a13852e | 2101 | /* WINDOW can be deleted now. */ |
e74aeda8 | 2102 | wset_combination (w, 0, Qnil); |
1a13852e MR |
2103 | } |
2104 | } | |
7ab12479 | 2105 | } |
6198ccd0 MR |
2106 | |
2107 | /* If WINDOW can be deleted, delete it. */ | |
4475bec4 | 2108 | static void |
6198ccd0 MR |
2109 | delete_deletable_window (Lisp_Object window) |
2110 | { | |
2111 | if (!NILP (call1 (Qwindow_deletable_p, window))) | |
2112 | call1 (Qdelete_window, window); | |
2113 | } | |
1a13852e | 2114 | \f |
67492200 GM |
2115 | /*********************************************************************** |
2116 | Window List | |
2117 | ***********************************************************************/ | |
2118 | ||
f95464e4 GM |
2119 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
2120 | pointer. This is a callback function for foreach_window, used in | |
496e208e | 2121 | the window_list function. */ |
67492200 GM |
2122 | |
2123 | static int | |
971de7fb | 2124 | add_window_to_list (struct window *w, void *user_data) |
67492200 | 2125 | { |
7d652d97 | 2126 | Lisp_Object *list = user_data; |
67492200 GM |
2127 | Lisp_Object window; |
2128 | XSETWINDOW (window, w); | |
212116d6 | 2129 | *list = Fcons (window, *list); |
67492200 GM |
2130 | return 1; |
2131 | } | |
2132 | ||
2133 | ||
2134 | /* Return a list of all windows, for use by next_window. If | |
2135 | Vwindow_list is a list, return that list. Otherwise, build a new | |
2136 | list, cache it in Vwindow_list, and return that. */ | |
2137 | ||
2138 | static Lisp_Object | |
971de7fb | 2139 | window_list (void) |
67492200 GM |
2140 | { |
2141 | if (!CONSP (Vwindow_list)) | |
2142 | { | |
5b04e9f9 | 2143 | Lisp_Object tail, frame; |
212116d6 | 2144 | |
67492200 | 2145 | Vwindow_list = Qnil; |
5b04e9f9 | 2146 | FOR_EACH_FRAME (tail, frame) |
212116d6 GM |
2147 | { |
2148 | Lisp_Object args[2]; | |
2149 | ||
2150 | /* We are visiting windows in canonical order, and add | |
2151 | new windows at the front of args[1], which means we | |
2152 | have to reverse this list at the end. */ | |
2153 | args[1] = Qnil; | |
5b04e9f9 | 2154 | foreach_window (XFRAME (frame), add_window_to_list, &args[1]); |
212116d6 GM |
2155 | args[0] = Vwindow_list; |
2156 | args[1] = Fnreverse (args[1]); | |
2157 | Vwindow_list = Fnconc (2, args); | |
2158 | } | |
67492200 | 2159 | } |
177c0ea7 | 2160 | |
67492200 GM |
2161 | return Vwindow_list; |
2162 | } | |
2163 | ||
2164 | ||
118ea242 GM |
2165 | /* Value is non-zero if WINDOW satisfies the constraints given by |
2166 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 2167 | |
118ea242 GM |
2168 | MINIBUF t means WINDOW may be minibuffer windows. |
2169 | `lambda' means WINDOW may not be a minibuffer window. | |
2170 | a window means a specific minibuffer window | |
67492200 | 2171 | |
118ea242 GM |
2172 | ALL_FRAMES t means search all frames, |
2173 | nil means search just current frame, | |
aa248733 MS |
2174 | `visible' means search just visible frames on the |
2175 | current terminal, | |
2176 | 0 means search visible and iconified frames on the | |
2177 | current terminal, | |
118ea242 GM |
2178 | a window means search the frame that window belongs to, |
2179 | a frame means consider windows on that frame, only. */ | |
67492200 | 2180 | |
d7e6881a DA |
2181 | static bool |
2182 | candidate_window_p (Lisp_Object window, Lisp_Object owindow, | |
2183 | Lisp_Object minibuf, Lisp_Object all_frames) | |
67492200 GM |
2184 | { |
2185 | struct window *w = XWINDOW (window); | |
d3d50620 | 2186 | struct frame *f = XFRAME (w->frame); |
d7e6881a | 2187 | bool candidate_p = 1; |
67492200 | 2188 | |
e74aeda8 | 2189 | if (!BUFFERP (w->contents)) |
67492200 GM |
2190 | candidate_p = 0; |
2191 | else if (MINI_WINDOW_P (w) | |
2192 | && (EQ (minibuf, Qlambda) | |
2193 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
2194 | { | |
2195 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
2196 | If it is a window, consider only that one. */ | |
2197 | candidate_p = 0; | |
2198 | } | |
118ea242 GM |
2199 | else if (EQ (all_frames, Qt)) |
2200 | candidate_p = 1; | |
67492200 | 2201 | else if (NILP (all_frames)) |
118ea242 | 2202 | { |
a54e2c05 | 2203 | eassert (WINDOWP (owindow)); |
d3d50620 | 2204 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); |
118ea242 | 2205 | } |
67492200 GM |
2206 | else if (EQ (all_frames, Qvisible)) |
2207 | { | |
de509a60 | 2208 | candidate_p = FRAME_VISIBLE_P (f) |
d3d50620 | 2209 | && (FRAME_TERMINAL (XFRAME (w->frame)) |
de509a60 SM |
2210 | == FRAME_TERMINAL (XFRAME (selected_frame))); |
2211 | ||
67492200 GM |
2212 | } |
2213 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
2214 | { | |
ca2d5566 SM |
2215 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
2216 | #ifdef HAVE_X_WINDOWS | |
2217 | /* Yuck!! If we've just created the frame and the | |
2218 | window-manager requested the user to place it | |
2219 | manually, the window may still not be considered | |
2220 | `visible'. I'd argue it should be at least | |
2221 | something like `iconified', but don't know how to do | |
2222 | that yet. --Stef */ | |
2223 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
2224 | && !f->output_data.x->has_been_visible) | |
2225 | #endif | |
de509a60 | 2226 | ) |
d3d50620 | 2227 | && (FRAME_TERMINAL (XFRAME (w->frame)) |
de509a60 | 2228 | == FRAME_TERMINAL (XFRAME (selected_frame))); |
67492200 | 2229 | } |
67492200 GM |
2230 | else if (WINDOWP (all_frames)) |
2231 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
d3d50620 DA |
2232 | || EQ (XWINDOW (all_frames)->frame, w->frame) |
2233 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 | 2234 | else if (FRAMEP (all_frames)) |
d3d50620 | 2235 | candidate_p = EQ (all_frames, w->frame); |
67492200 GM |
2236 | |
2237 | return candidate_p; | |
2238 | } | |
2239 | ||
2240 | ||
2241 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
aa248733 MS |
2242 | Fwindow_list. See candidate_window_p for the meaning of WINDOW, |
2243 | MINIBUF, and ALL_FRAMES. */ | |
67492200 GM |
2244 | |
2245 | static void | |
971de7fb | 2246 | decode_next_window_args (Lisp_Object *window, Lisp_Object *minibuf, Lisp_Object *all_frames) |
67492200 | 2247 | { |
b9e9df47 | 2248 | struct window *w = decode_live_window (*window); |
177c0ea7 | 2249 | |
b6a9e8b1 | 2250 | XSETWINDOW (*window, w); |
67492200 GM |
2251 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
2252 | does. */ | |
2253 | if (NILP (*minibuf)) | |
2254 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
2255 | else if (!EQ (*minibuf, Qt)) | |
2256 | *minibuf = Qlambda; | |
177c0ea7 | 2257 | |
67492200 GM |
2258 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
2259 | => count none of them, or a specific minibuffer window (the | |
2260 | active one) to count. */ | |
2261 | ||
2262 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
2263 | if (NILP (*all_frames)) | |
f00af5b1 | 2264 | *all_frames |
3a45383a | 2265 | = (!EQ (*minibuf, Qlambda) |
b9e9df47 | 2266 | ? FRAME_MINIBUF_WINDOW (XFRAME (w->frame)) |
3a45383a | 2267 | : Qnil); |
67492200 GM |
2268 | else if (EQ (*all_frames, Qvisible)) |
2269 | ; | |
0f8fe9a2 | 2270 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
2271 | ; |
2272 | else if (FRAMEP (*all_frames)) | |
2273 | ; | |
2274 | else if (!EQ (*all_frames, Qt)) | |
2275 | *all_frames = Qnil; | |
67492200 GM |
2276 | } |
2277 | ||
2278 | ||
ab6d1131 | 2279 | /* Return the next or previous window of WINDOW in cyclic ordering |
67492200 GM |
2280 | of windows. NEXT_P non-zero means return the next window. See the |
2281 | documentation string of next-window for the meaning of MINIBUF and | |
2282 | ALL_FRAMES. */ | |
2283 | ||
2284 | static Lisp_Object | |
971de7fb | 2285 | next_window (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames, int next_p) |
67492200 GM |
2286 | { |
2287 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 2288 | |
67492200 GM |
2289 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
2290 | return the first window on the frame. */ | |
2291 | if (FRAMEP (all_frames) | |
d3d50620 | 2292 | && !EQ (all_frames, XWINDOW (window)->frame)) |
67492200 | 2293 | return Fframe_first_window (all_frames); |
177c0ea7 | 2294 | |
212116d6 | 2295 | if (next_p) |
67492200 GM |
2296 | { |
2297 | Lisp_Object list; | |
177c0ea7 | 2298 | |
67492200 GM |
2299 | /* Find WINDOW in the list of all windows. */ |
2300 | list = Fmemq (window, window_list ()); | |
2301 | ||
2302 | /* Scan forward from WINDOW to the end of the window list. */ | |
2303 | if (CONSP (list)) | |
2304 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 2305 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2306 | break; |
2307 | ||
2308 | /* Scan from the start of the window list up to WINDOW. */ | |
2309 | if (!CONSP (list)) | |
2310 | for (list = Vwindow_list; | |
2311 | CONSP (list) && !EQ (XCAR (list), window); | |
2312 | list = XCDR (list)) | |
118ea242 | 2313 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2314 | break; |
2315 | ||
2316 | if (CONSP (list)) | |
2317 | window = XCAR (list); | |
2318 | } | |
2319 | else | |
2320 | { | |
2321 | Lisp_Object candidate, list; | |
177c0ea7 | 2322 | |
67492200 GM |
2323 | /* Scan through the list of windows for candidates. If there are |
2324 | candidate windows in front of WINDOW, the last one of these | |
2325 | is the one we want. If there are candidates following WINDOW | |
2326 | in the list, again the last one of these is the one we want. */ | |
2327 | candidate = Qnil; | |
2328 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
2329 | { | |
2330 | if (EQ (XCAR (list), window)) | |
2331 | { | |
2332 | if (WINDOWP (candidate)) | |
2333 | break; | |
2334 | } | |
118ea242 GM |
2335 | else if (candidate_window_p (XCAR (list), window, minibuf, |
2336 | all_frames)) | |
67492200 GM |
2337 | candidate = XCAR (list); |
2338 | } | |
2339 | ||
2340 | if (WINDOWP (candidate)) | |
2341 | window = candidate; | |
2342 | } | |
2343 | ||
2344 | return window; | |
2345 | } | |
7ab12479 | 2346 | |
7ab12479 | 2347 | |
a7ca3326 | 2348 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
a9b9b7f5 | 2349 | doc: /* Return live window after WINDOW in the cyclic ordering of windows. |
87e68db4 | 2350 | WINDOW must be a live window and defaults to the selected one. The |
9397e56f MR |
2351 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to |
2352 | consider. | |
2353 | ||
2354 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2355 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2356 | even if the minibuffer is not active. Any other value means do not | |
2357 | consider the minibuffer window even if the minibuffer is active. | |
2358 | ||
2359 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2360 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2361 | minibuffer counts, consider all windows on all frames that share that | |
2362 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2363 | meanings: | |
2364 | ||
2365 | - t means consider all windows on all existing frames. | |
2366 | ||
2367 | - `visible' means consider all windows on all visible frames. | |
2368 | ||
2369 | - 0 (the number zero) means consider all windows on all visible and | |
2370 | iconified frames. | |
2371 | ||
2372 | - A frame means consider all windows on that frame only. | |
ab6d1131 | 2373 | |
ab6d1131 | 2374 | Anything else means consider all windows on WINDOW's frame and no |
9397e56f | 2375 | others. |
fdb82f93 PJ |
2376 | |
2377 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
2378 | `next-window' to iterate through the entire cycle of acceptable | |
2379 | windows, eventually ending up back at the window you started with. | |
2380 | `previous-window' traverses the same cycle, in the reverse order. */) | |
5842a27b | 2381 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2382 | { |
67492200 | 2383 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
2384 | } |
2385 | ||
67492200 | 2386 | |
26f6279d | 2387 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
a9b9b7f5 | 2388 | doc: /* Return live window before WINDOW in the cyclic ordering of windows. |
9397e56f MR |
2389 | WINDOW must be a live window and defaults to the selected one. The |
2390 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to | |
2391 | consider. | |
2392 | ||
2393 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2394 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2395 | even if the minibuffer is not active. Any other value means do not | |
2396 | consider the minibuffer window even if the minibuffer is active. | |
2397 | ||
2398 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2399 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2400 | minibuffer counts, consider all windows on all frames that share that | |
2401 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2402 | meanings: | |
2403 | ||
2404 | - t means consider all windows on all existing frames. | |
2405 | ||
2406 | - `visible' means consider all windows on all visible frames. | |
2407 | ||
2408 | - 0 (the number zero) means consider all windows on all visible and | |
2409 | iconified frames. | |
2410 | ||
2411 | - A frame means consider all windows on that frame only. | |
2412 | ||
2413 | Anything else means consider all windows on WINDOW's frame and no | |
2414 | others. | |
ab6d1131 MR |
2415 | |
2416 | If you use consistent values for MINIBUF and ALL-FRAMES, you can | |
2417 | use `previous-window' to iterate through the entire cycle of | |
2418 | acceptable windows, eventually ending up back at the window you | |
2419 | started with. `next-window' traverses the same cycle, in the | |
2420 | reverse order. */) | |
5842a27b | 2421 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2422 | { |
67492200 | 2423 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2424 | } |
2425 | ||
67492200 | 2426 | |
ab6d1131 | 2427 | /* Return a list of windows in cyclic ordering. Arguments are like |
cd2904bd GM |
2428 | for `next-window'. */ |
2429 | ||
2430 | static Lisp_Object | |
971de7fb | 2431 | window_list_1 (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 | 2432 | { |
403de3b4 | 2433 | Lisp_Object tail, list, rest; |
67492200 GM |
2434 | |
2435 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2436 | list = Qnil; | |
177c0ea7 | 2437 | |
67492200 | 2438 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2439 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2440 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2441 | |
403de3b4 RS |
2442 | /* Rotate the list to start with WINDOW. */ |
2443 | list = Fnreverse (list); | |
2444 | rest = Fmemq (window, list); | |
2445 | if (!NILP (rest) && !EQ (rest, list)) | |
2446 | { | |
1725a7c9 | 2447 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2448 | ; |
2449 | XSETCDR (tail, Qnil); | |
2450 | list = nconc2 (rest, list); | |
2451 | } | |
2452 | return list; | |
67492200 GM |
2453 | } |
2454 | ||
2455 | ||
abde8f8c MR |
2456 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, |
2457 | doc: /* Return a list of windows on FRAME, starting with WINDOW. | |
2458 | FRAME nil or omitted means use the selected frame. | |
49745b39 | 2459 | WINDOW nil or omitted means use the window selected within FRAME. |
abde8f8c MR |
2460 | MINIBUF t means include the minibuffer window, even if it isn't active. |
2461 | MINIBUF nil or omitted means include the minibuffer window only | |
2462 | if it's active. | |
2463 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2464 | (Lisp_Object frame, Lisp_Object minibuf, Lisp_Object window) | |
2465 | { | |
2466 | if (NILP (window)) | |
e69b0960 | 2467 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
abde8f8c MR |
2468 | CHECK_WINDOW (window); |
2469 | if (NILP (frame)) | |
2470 | frame = selected_frame; | |
2471 | ||
d3d50620 | 2472 | if (!EQ (frame, XWINDOW (window)->frame)) |
abde8f8c MR |
2473 | error ("Window is on a different frame"); |
2474 | ||
2475 | return window_list_1 (window, minibuf, frame); | |
2476 | } | |
2477 | ||
2478 | ||
1a13852e MR |
2479 | DEFUN ("window-list-1", Fwindow_list_1, Swindow_list_1, 0, 3, 0, |
2480 | doc: /* Return a list of all live windows. | |
2481 | WINDOW specifies the first window to list and defaults to the selected | |
2482 | window. | |
2483 | ||
2484 | Optional argument MINIBUF nil or omitted means consider the minibuffer | |
2485 | window only if the minibuffer is active. MINIBUF t means consider the | |
2486 | minibuffer window even if the minibuffer is not active. Any other value | |
2487 | means do not consider the minibuffer window even if the minibuffer is | |
2488 | active. | |
2489 | ||
2490 | Optional argument ALL-FRAMES nil or omitted means consider all windows | |
2491 | on WINDOW's frame, plus the minibuffer window if specified by the | |
2492 | MINIBUF argument. If the minibuffer counts, consider all windows on all | |
2493 | frames that share that minibuffer too. The following non-nil values of | |
2494 | ALL-FRAMES have special meanings: | |
2495 | ||
2496 | - t means consider all windows on all existing frames. | |
2497 | ||
2498 | - `visible' means consider all windows on all visible frames. | |
2499 | ||
2500 | - 0 (the number zero) means consider all windows on all visible and | |
2501 | iconified frames. | |
2502 | ||
2503 | - A frame means consider all windows on that frame only. | |
2504 | ||
2505 | Anything else means consider all windows on WINDOW's frame and no | |
2506 | others. | |
2507 | ||
2508 | If WINDOW is not on the list of windows returned, some other window will | |
8350f087 | 2509 | be listed first but no error is signaled. */) |
1a13852e MR |
2510 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
2511 | { | |
2512 | return window_list_1 (window, minibuf, all_frames); | |
2513 | } | |
7ab12479 JB |
2514 | \f |
2515 | /* Look at all windows, performing an operation specified by TYPE | |
2516 | with argument OBJ. | |
75d8f668 | 2517 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2518 | Qnil, look at just the selected frame; |
89bca612 | 2519 | Qvisible, look at visible frames; |
75d8f668 | 2520 | a frame, just look at windows on that frame. |
85fe3b5e | 2521 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2522 | |
2523 | enum window_loop | |
2524 | { | |
2525 | WINDOW_LOOP_UNUSED, | |
9397e56f MR |
2526 | GET_BUFFER_WINDOW, /* Arg is buffer */ |
2527 | REPLACE_BUFFER_IN_WINDOWS_SAFELY, /* Arg is buffer */ | |
2528 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ | |
e74aeda8 | 2529 | CHECK_ALL_WINDOWS /* Arg is ignored */ |
7ab12479 JB |
2530 | }; |
2531 | ||
2532 | static Lisp_Object | |
971de7fb | 2533 | window_loop (enum window_loop type, Lisp_Object obj, int mini, Lisp_Object frames) |
7ab12479 | 2534 | { |
118ea242 | 2535 | Lisp_Object window, windows, best_window, frame_arg; |
9397e56f | 2536 | int frame_best_window_flag = 0; |
118ea242 | 2537 | struct frame *f; |
ffdc852d | 2538 | struct gcpro gcpro1; |
177c0ea7 | 2539 | |
44fa5b1e JB |
2540 | /* If we're only looping through windows on a particular frame, |
2541 | frame points to that frame. If we're looping through windows | |
2542 | on all frames, frame is 0. */ | |
2543 | if (FRAMEP (frames)) | |
118ea242 | 2544 | f = XFRAME (frames); |
44fa5b1e | 2545 | else if (NILP (frames)) |
118ea242 | 2546 | f = SELECTED_FRAME (); |
7ab12479 | 2547 | else |
118ea242 | 2548 | f = NULL; |
177c0ea7 | 2549 | |
118ea242 | 2550 | if (f) |
89bca612 | 2551 | frame_arg = Qlambda; |
0f8fe9a2 | 2552 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2553 | frame_arg = frames; |
89bca612 RS |
2554 | else if (EQ (frames, Qvisible)) |
2555 | frame_arg = frames; | |
118ea242 GM |
2556 | else |
2557 | frame_arg = Qt; | |
7ab12479 | 2558 | |
89bca612 RS |
2559 | /* frame_arg is Qlambda to stick to one frame, |
2560 | Qvisible to consider all visible frames, | |
2561 | or Qt otherwise. */ | |
2562 | ||
7ab12479 | 2563 | /* Pick a window to start with. */ |
017b2bad | 2564 | if (WINDOWP (obj)) |
118ea242 GM |
2565 | window = obj; |
2566 | else if (f) | |
2567 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2568 | else |
118ea242 | 2569 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2570 | |
cd2904bd | 2571 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2572 | GCPRO1 (windows); |
7ab12479 | 2573 | best_window = Qnil; |
118ea242 | 2574 | |
e67a1dea | 2575 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2576 | { |
118ea242 | 2577 | struct window *w; |
177c0ea7 | 2578 | |
118ea242 GM |
2579 | window = XCAR (windows); |
2580 | w = XWINDOW (window); | |
177c0ea7 | 2581 | |
118ea242 GM |
2582 | /* Note that we do not pay attention here to whether the frame |
2583 | is visible, since Fwindow_list skips non-visible frames if | |
2584 | that is desired, under the control of frame_arg. */ | |
2585 | if (!MINI_WINDOW_P (w) | |
9397e56f MR |
2586 | /* For REPLACE_BUFFER_IN_WINDOWS_SAFELY, we must always |
2587 | consider all windows. */ | |
2588 | || type == REPLACE_BUFFER_IN_WINDOWS_SAFELY | |
7ab12479 JB |
2589 | || (mini && minibuf_level > 0)) |
2590 | switch (type) | |
2591 | { | |
2592 | case GET_BUFFER_WINDOW: | |
e74aeda8 | 2593 | if (EQ (w->contents, obj) |
9397e56f MR |
2594 | /* Don't find any minibuffer window except the one that |
2595 | is currently in use. */ | |
2596 | && (MINI_WINDOW_P (w) ? EQ (window, minibuf_window) : 1)) | |
118ea242 | 2597 | { |
9397e56f MR |
2598 | if (EQ (window, selected_window)) |
2599 | /* Preferably return the selected window. */ | |
ca2d5566 | 2600 | RETURN_UNGCPRO (window); |
d3d50620 | 2601 | else if (EQ (XWINDOW (window)->frame, selected_frame) |
9397e56f MR |
2602 | && !frame_best_window_flag) |
2603 | /* Prefer windows on the current frame (but don't | |
2604 | choose another one if we have one already). */ | |
118ea242 | 2605 | { |
9397e56f MR |
2606 | best_window = window; |
2607 | frame_best_window_flag = 1; | |
7ab12479 | 2608 | } |
9397e56f MR |
2609 | else if (NILP (best_window)) |
2610 | best_window = window; | |
7ab12479 JB |
2611 | } |
2612 | break; | |
2613 | ||
9397e56f MR |
2614 | case REPLACE_BUFFER_IN_WINDOWS_SAFELY: |
2615 | /* We could simply check whether the buffer shown by window | |
2616 | is live, and show another buffer in case it isn't. */ | |
e74aeda8 | 2617 | if (EQ (w->contents, obj)) |
7ab12479 | 2618 | { |
9397e56f | 2619 | /* Undedicate WINDOW. */ |
e8c17b81 | 2620 | wset_dedicated (w, Qnil); |
9397e56f MR |
2621 | /* Make WINDOW show the buffer returned by |
2622 | other_buffer_safely, don't run any hooks. */ | |
2623 | set_window_buffer | |
e74aeda8 | 2624 | (window, other_buffer_safely (w->contents), 0, 0); |
9397e56f MR |
2625 | /* If WINDOW is the selected window, make its buffer |
2626 | current. But do so only if the window shows the | |
2627 | current buffer (Bug#6454). */ | |
2628 | if (EQ (window, selected_window) | |
e74aeda8 DA |
2629 | && XBUFFER (w->contents) == current_buffer) |
2630 | Fset_buffer (w->contents); | |
7ab12479 JB |
2631 | } |
2632 | break; | |
3f8ab7bd | 2633 | |
6b61353c | 2634 | case REDISPLAY_BUFFER_WINDOWS: |
e74aeda8 | 2635 | if (EQ (w->contents, obj)) |
6b61353c KH |
2636 | { |
2637 | mark_window_display_accurate (window, 0); | |
c98ff5dd | 2638 | w->update_mode_line = 1; |
6b61353c KH |
2639 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; |
2640 | ++update_mode_lines; | |
2641 | best_window = window; | |
2642 | } | |
2643 | break; | |
2644 | ||
e74aeda8 DA |
2645 | /* Check for a leaf window that has a killed buffer |
2646 | or broken markers. */ | |
3f8ab7bd | 2647 | case CHECK_ALL_WINDOWS: |
e74aeda8 DA |
2648 | if (BUFFERP (w->contents)) |
2649 | { | |
2650 | struct buffer *b = XBUFFER (w->contents); | |
2651 | ||
2652 | if (!BUFFER_LIVE_P (b)) | |
2653 | emacs_abort (); | |
2654 | if (!MARKERP (w->start) || XMARKER (w->start)->buffer != b) | |
2655 | emacs_abort (); | |
2656 | if (!MARKERP (w->pointm) || XMARKER (w->pointm)->buffer != b) | |
2657 | emacs_abort (); | |
2658 | } | |
118ea242 | 2659 | break; |
6bbd7a29 GM |
2660 | |
2661 | case WINDOW_LOOP_UNUSED: | |
2662 | break; | |
7ab12479 | 2663 | } |
7ab12479 | 2664 | } |
7ab12479 | 2665 | |
118ea242 | 2666 | UNGCPRO; |
7ab12479 | 2667 | return best_window; |
37962e60 | 2668 | } |
605be8af | 2669 | |
3f8ab7bd RS |
2670 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2671 | ||
e3b27b31 | 2672 | extern void check_all_windows (void) EXTERNALLY_VISIBLE; |
233a4a2c | 2673 | void |
971de7fb | 2674 | check_all_windows (void) |
3f8ab7bd RS |
2675 | { |
2676 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2677 | } | |
2678 | ||
a7ca3326 | 2679 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 0, 2, 0, |
fec89261 | 2680 | doc: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none. |
496e208e MR |
2681 | BUFFER-OR-NAME may be a buffer or a buffer name and defaults to |
2682 | the current buffer. | |
2683 | ||
2684 | The optional argument ALL-FRAMES specifies the frames to consider: | |
2685 | ||
2686 | - t means consider all windows on all existing frames. | |
2687 | ||
2688 | - `visible' means consider all windows on all visible frames. | |
2689 | ||
2690 | - 0 (the number zero) means consider all windows on all visible | |
2691 | and iconified frames. | |
2692 | ||
2693 | - A frame means consider all windows on that frame only. | |
2694 | ||
2695 | Any other value of ALL-FRAMES means consider all windows on the | |
2696 | selected frame and no others. */) | |
2697 | (Lisp_Object buffer_or_name, Lisp_Object all_frames) | |
7ab12479 | 2698 | { |
fec89261 MR |
2699 | Lisp_Object buffer; |
2700 | ||
2701 | if (NILP (buffer_or_name)) | |
2702 | buffer = Fcurrent_buffer (); | |
2703 | else | |
2704 | buffer = Fget_buffer (buffer_or_name); | |
2705 | ||
017b2bad | 2706 | if (BUFFERP (buffer)) |
496e208e | 2707 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, all_frames); |
7ab12479 JB |
2708 | else |
2709 | return Qnil; | |
2710 | } | |
2711 | ||
4b66faf3 | 2712 | static Lisp_Object |
1a13852e MR |
2713 | resize_root_window (Lisp_Object window, Lisp_Object delta, Lisp_Object horizontal, Lisp_Object ignore) |
2714 | { | |
5386012d | 2715 | return call4 (Qwindow_resize_root_window, window, delta, horizontal, ignore); |
1a13852e MR |
2716 | } |
2717 | ||
2718 | ||
2719 | DEFUN ("delete-other-windows-internal", Fdelete_other_windows_internal, | |
2720 | Sdelete_other_windows_internal, 0, 2, "", | |
2721 | doc: /* Make WINDOW fill its frame. | |
52162052 MR |
2722 | Only the frame WINDOW is on is affected. WINDOW must be a valid window |
2723 | and defaults to the selected one. | |
1a13852e | 2724 | |
be7f5545 MR |
2725 | Optional argument ROOT, if non-nil, must specify an internal window such |
2726 | that WINDOW is in its window subtree. If this is the case, replace ROOT | |
2727 | by WINDOW and leave alone any windows not part of ROOT's subtree. | |
1a13852e MR |
2728 | |
2729 | When WINDOW is live try to reduce display jumps by keeping the text | |
2730 | previously visible in WINDOW in the same place on the frame. Doing this | |
2731 | depends on the value of (window-start WINDOW), so if calling this | |
2732 | function in a program gives strange scrolling, make sure the | |
2733 | window-start value is reasonable when this function is called. */) | |
2734 | (Lisp_Object window, Lisp_Object root) | |
2735 | { | |
2736 | struct window *w, *r, *s; | |
2737 | struct frame *f; | |
46a4ce9e | 2738 | Lisp_Object sibling, pwindow, swindow IF_LINT (= Qnil), delta; |
c54aa166 | 2739 | ptrdiff_t startpos IF_LINT (= 0), startbyte IF_LINT (= 0); |
46a4ce9e | 2740 | int top IF_LINT (= 0), new_top, resize_failed; |
1a13852e | 2741 | |
52162052 | 2742 | w = decode_valid_window (window); |
1a13852e | 2743 | XSETWINDOW (window, w); |
d3d50620 | 2744 | f = XFRAME (w->frame); |
1a13852e MR |
2745 | |
2746 | if (NILP (root)) | |
2747 | /* ROOT is the frame's root window. */ | |
2748 | { | |
2749 | root = FRAME_ROOT_WINDOW (f); | |
2750 | r = XWINDOW (root); | |
2751 | } | |
2752 | else | |
2753 | /* ROOT must be an ancestor of WINDOW. */ | |
2754 | { | |
52162052 | 2755 | r = decode_valid_window (root); |
d3d50620 | 2756 | pwindow = XWINDOW (window)->parent; |
1a13852e MR |
2757 | while (!NILP (pwindow)) |
2758 | if (EQ (pwindow, root)) | |
2759 | break; | |
2760 | else | |
d3d50620 | 2761 | pwindow = XWINDOW (pwindow)->parent; |
1a13852e MR |
2762 | if (!EQ (pwindow, root)) |
2763 | error ("Specified root is not an ancestor of specified window"); | |
2764 | } | |
2765 | ||
2766 | if (EQ (window, root)) | |
2767 | /* A noop. */ | |
2768 | return Qnil; | |
2769 | /* I don't understand the "top > 0" part below. If we deal with a | |
2770 | standalone minibuffer it would have been caught by the preceding | |
2771 | test. */ | |
2772 | else if (MINI_WINDOW_P (w)) /* && top > 0) */ | |
2773 | error ("Can't expand minibuffer to full frame"); | |
2774 | ||
e74aeda8 | 2775 | if (BUFFERP (w->contents)) |
1a13852e | 2776 | { |
d3d50620 | 2777 | startpos = marker_position (w->start); |
c54aa166 | 2778 | startbyte = marker_byte_position (w->start); |
1a13852e MR |
2779 | top = WINDOW_TOP_EDGE_LINE (w) |
2780 | - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2781 | /* Make sure WINDOW is the frame's selected window. */ | |
2782 | if (!EQ (window, FRAME_SELECTED_WINDOW (f))) | |
2783 | { | |
d3d50620 | 2784 | if (EQ (selected_frame, w->frame)) |
1a13852e MR |
2785 | Fselect_window (window, Qnil); |
2786 | else | |
f00af5b1 | 2787 | fset_selected_window (f, window); |
1a13852e MR |
2788 | } |
2789 | } | |
2790 | else | |
2791 | { | |
be7f5545 MR |
2792 | /* See if the frame's selected window is a part of the window |
2793 | subtree rooted at WINDOW, by finding all the selected window's | |
2794 | parents and comparing each one with WINDOW. If it isn't we | |
2795 | need a new selected window for this frame. */ | |
1a13852e MR |
2796 | swindow = FRAME_SELECTED_WINDOW (f); |
2797 | while (1) | |
2798 | { | |
2799 | pwindow = swindow; | |
2800 | while (!NILP (pwindow) && !EQ (window, pwindow)) | |
d3d50620 | 2801 | pwindow = XWINDOW (pwindow)->parent; |
1a13852e MR |
2802 | |
2803 | if (EQ (window, pwindow)) | |
2804 | /* If WINDOW is an ancestor of SWINDOW, then SWINDOW is ok | |
2805 | as the new selected window. */ | |
2806 | break; | |
2807 | else | |
2808 | /* Else try the previous window of SWINDOW. */ | |
2809 | swindow = Fprevious_window (swindow, Qlambda, Qnil); | |
2810 | } | |
2811 | ||
2812 | if (!EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
2813 | { | |
d3d50620 | 2814 | if (EQ (selected_frame, w->frame)) |
1a13852e MR |
2815 | Fselect_window (swindow, Qnil); |
2816 | else | |
f00af5b1 | 2817 | fset_selected_window (f, swindow); |
1a13852e MR |
2818 | } |
2819 | } | |
2820 | ||
4d7e6e51 | 2821 | block_input (); |
4c5501e9 EZ |
2822 | if (!FRAME_INITIAL_P (f)) |
2823 | { | |
9fed9729 | 2824 | Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f); |
4c5501e9 EZ |
2825 | |
2826 | /* We are going to free the glyph matrices of WINDOW, and with | |
2827 | that we might lose any information about glyph rows that have | |
2828 | some of their glyphs highlighted in mouse face. (These rows | |
2829 | are marked with a non-zero mouse_face_p flag.) If WINDOW | |
2830 | indeed has some glyphs highlighted in mouse face, signal to | |
2831 | frame's up-to-date hook that mouse highlight was overwritten, | |
2832 | so that it will arrange for redisplaying the highlight. */ | |
2833 | if (EQ (hlinfo->mouse_face_window, window)) | |
9fed9729 | 2834 | reset_mouse_highlight (hlinfo); |
a6b1c7cc | 2835 | } |
1a13852e MR |
2836 | free_window_matrices (r); |
2837 | ||
2838 | windows_or_buffers_changed++; | |
2839 | Vwindow_list = Qnil; | |
2840 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
46a4ce9e | 2841 | resize_failed = 0; |
1a13852e | 2842 | |
e74aeda8 | 2843 | if (!WINDOW_LEAF_P (w)) |
1a13852e | 2844 | { |
be7f5545 | 2845 | /* Resize child windows vertically. */ |
5f24fa51 DA |
2846 | XSETINT (delta, r->total_lines - w->total_lines); |
2847 | w->top_line = r->top_line; | |
1a13852e | 2848 | resize_root_window (window, delta, Qnil, Qnil); |
d615d6d2 MR |
2849 | if (window_resize_check (w, 0)) |
2850 | window_resize_apply (w, 0); | |
1a13852e MR |
2851 | else |
2852 | { | |
2853 | resize_root_window (window, delta, Qnil, Qt); | |
d615d6d2 MR |
2854 | if (window_resize_check (w, 0)) |
2855 | window_resize_apply (w, 0); | |
1a13852e MR |
2856 | else |
2857 | resize_failed = 1; | |
2858 | } | |
2859 | ||
be7f5545 | 2860 | /* Resize child windows horizontally. */ |
1a13852e MR |
2861 | if (!resize_failed) |
2862 | { | |
5f24fa51 DA |
2863 | w->left_col = r->left_col; |
2864 | XSETINT (delta, r->total_cols - w->total_cols); | |
1a13852e | 2865 | resize_root_window (window, delta, Qt, Qnil); |
d615d6d2 MR |
2866 | if (window_resize_check (w, 1)) |
2867 | window_resize_apply (w, 1); | |
1a13852e MR |
2868 | else |
2869 | { | |
2870 | resize_root_window (window, delta, Qt, Qt); | |
d615d6d2 MR |
2871 | if (window_resize_check (w, 1)) |
2872 | window_resize_apply (w, 1); | |
1a13852e MR |
2873 | else |
2874 | resize_failed = 1; | |
2875 | } | |
2876 | } | |
2877 | ||
2878 | if (resize_failed) | |
2879 | /* Play safe, if we still can ... */ | |
2880 | { | |
2881 | window = swindow; | |
2882 | w = XWINDOW (window); | |
2883 | } | |
2884 | } | |
2885 | ||
2886 | /* Cleanly unlink WINDOW from window-tree. */ | |
d3d50620 | 2887 | if (!NILP (w->prev)) |
1a13852e MR |
2888 | /* Get SIBLING above (on the left of) WINDOW. */ |
2889 | { | |
d3d50620 | 2890 | sibling = w->prev; |
1a13852e | 2891 | s = XWINDOW (sibling); |
e8c17b81 | 2892 | wset_next (s, w->next); |
d3d50620 | 2893 | if (!NILP (s->next)) |
e8c17b81 | 2894 | wset_prev (XWINDOW (s->next), sibling); |
1a13852e MR |
2895 | } |
2896 | else | |
2897 | /* Get SIBLING below (on the right of) WINDOW. */ | |
2898 | { | |
d3d50620 | 2899 | sibling = w->next; |
1a13852e | 2900 | s = XWINDOW (sibling); |
e8c17b81 | 2901 | wset_prev (s, Qnil); |
e74aeda8 DA |
2902 | wset_combination (XWINDOW (w->parent), |
2903 | XWINDOW (w->parent)->horizontal, sibling); | |
1a13852e MR |
2904 | } |
2905 | ||
be7f5545 | 2906 | /* Delete ROOT and all child windows of ROOT. */ |
e74aeda8 | 2907 | if (WINDOWP (r->contents)) |
1a13852e | 2908 | { |
e74aeda8 DA |
2909 | delete_all_child_windows (r->contents); |
2910 | wset_combination (r, 0, Qnil); | |
1a13852e MR |
2911 | } |
2912 | ||
2913 | replace_window (root, window, 1); | |
2914 | ||
7ffe7ef6 | 2915 | /* This must become SWINDOW anyway ....... */ |
e74aeda8 | 2916 | if (BUFFERP (w->contents) && !resize_failed) |
1a13852e MR |
2917 | { |
2918 | /* Try to minimize scrolling, by setting the window start to the | |
2919 | point will cause the text at the old window start to be at the | |
2920 | same place on the frame. But don't try to do this if the | |
2921 | window start is outside the visible portion (as might happen | |
2922 | when the display is not current, due to typeahead). */ | |
2923 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2924 | if (new_top != top | |
e74aeda8 DA |
2925 | && startpos >= BUF_BEGV (XBUFFER (w->contents)) |
2926 | && startpos <= BUF_ZV (XBUFFER (w->contents))) | |
1a13852e MR |
2927 | { |
2928 | struct position pos; | |
2929 | struct buffer *obuf = current_buffer; | |
2930 | ||
e74aeda8 | 2931 | Fset_buffer (w->contents); |
1a13852e MR |
2932 | /* This computation used to temporarily move point, but that |
2933 | can have unwanted side effects due to text properties. */ | |
c54aa166 | 2934 | pos = *vmotion (startpos, startbyte, -top, w); |
1a13852e | 2935 | |
e74aeda8 | 2936 | set_marker_both (w->start, w->contents, pos.bufpos, pos.bytepos); |
9d93ce29 | 2937 | w->window_end_valid = 0; |
c98ff5dd DA |
2938 | w->start_at_line_beg = (pos.bytepos == BEGV_BYTE |
2939 | || FETCH_BYTE (pos.bytepos - 1) == '\n'); | |
1a13852e MR |
2940 | /* We need to do this, so that the window-scroll-functions |
2941 | get called. */ | |
c98ff5dd | 2942 | w->optional_new_start = 1; |
1a13852e MR |
2943 | |
2944 | set_buffer_internal (obuf); | |
2945 | } | |
2946 | } | |
2947 | ||
bd0443bb | 2948 | adjust_frame_glyphs (f); |
4d7e6e51 | 2949 | unblock_input (); |
1a13852e MR |
2950 | |
2951 | run_window_configuration_change_hook (f); | |
2952 | ||
2953 | return Qnil; | |
2954 | } | |
2955 | ||
2956 | ||
9397e56f MR |
2957 | void |
2958 | replace_buffer_in_windows (Lisp_Object buffer) | |
7ab12479 | 2959 | { |
9397e56f | 2960 | call1 (Qreplace_buffer_in_windows, buffer); |
7ab12479 JB |
2961 | } |
2962 | ||
c6afe371 DA |
2963 | /* If BUFFER is shown in a window, safely replace it with some other |
2964 | buffer in all windows of all frames, even those on other keyboards. */ | |
ff58478b RS |
2965 | |
2966 | void | |
9397e56f | 2967 | replace_buffer_in_windows_safely (Lisp_Object buffer) |
ff58478b | 2968 | { |
c6afe371 DA |
2969 | if (buffer_window_count (XBUFFER (buffer))) |
2970 | { | |
2971 | Lisp_Object tail, frame; | |
ff58478b | 2972 | |
c6afe371 DA |
2973 | /* A single call to window_loop won't do the job because it only |
2974 | considers frames on the current keyboard. So loop manually over | |
2975 | frames, and handle each one. */ | |
2976 | FOR_EACH_FRAME (tail, frame) | |
2977 | window_loop (REPLACE_BUFFER_IN_WINDOWS_SAFELY, buffer, 1, frame); | |
2978 | } | |
ff58478b | 2979 | } |
c6afe371 | 2980 | |
a481b3ea JB |
2981 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the |
2982 | minimum allowable size. */ | |
5500c422 | 2983 | |
605be8af | 2984 | void |
a10c8269 | 2985 | check_frame_size (struct frame *frame, int *rows, int *cols) |
a481b3ea | 2986 | { |
628df3bf | 2987 | /* For height, we have to see: |
54b8bcb5 RS |
2988 | how many windows the frame has at minimum (one or two), |
2989 | and whether it has a menu bar or other special stuff at the top. */ | |
2990 | int min_height | |
2991 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
2992 | ? MIN_SAFE_WINDOW_HEIGHT | |
2993 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 2994 | |
5500c422 GM |
2995 | if (FRAME_TOP_MARGIN (frame) > 0) |
2996 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2997 | |
2998 | if (*rows < min_height) | |
2999 | *rows = min_height; | |
3000 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
3001 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
3002 | } | |
3003 | ||
79fd290e | 3004 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
3005 | Return 1 if window width is ok after adjustment; 0 if window |
3006 | is still too narrow. */ | |
3007 | ||
3008 | static int | |
971de7fb | 3009 | adjust_window_margins (struct window *w) |
949cf20f KS |
3010 | { |
3011 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
3012 | - WINDOW_FRINGE_COLS (w) | |
3013 | - WINDOW_SCROLL_BAR_COLS (w)); | |
3014 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
3015 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
3016 | ||
3017 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
3018 | return 1; | |
3019 | ||
3020 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
3021 | return 0; | |
3022 | ||
3023 | /* Window's text area is too narrow, but reducing the window | |
3024 | margins will fix that. */ | |
3025 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
3026 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
3027 | { | |
3028 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
eeaf9bf3 | 3029 | w->left_margin_cols = w->right_margin_cols = margin_cols / 2; |
949cf20f | 3030 | else |
eeaf9bf3 | 3031 | w->right_margin_cols = margin_cols; |
949cf20f KS |
3032 | } |
3033 | else | |
eeaf9bf3 | 3034 | w->left_margin_cols = margin_cols; |
949cf20f KS |
3035 | return 1; |
3036 | } | |
562dd5e9 | 3037 | \f |
9397e56f MR |
3038 | /* The following three routines are needed for running a window's |
3039 | configuration change hook. */ | |
562dd5e9 MR |
3040 | static void |
3041 | run_funs (Lisp_Object funs) | |
3042 | { | |
3043 | for (; CONSP (funs); funs = XCDR (funs)) | |
3044 | if (!EQ (XCAR (funs), Qt)) | |
3045 | call0 (XCAR (funs)); | |
3046 | } | |
6b61353c | 3047 | |
27e498e6 | 3048 | static void |
9397e56f MR |
3049 | select_window_norecord (Lisp_Object window) |
3050 | { | |
27e498e6 PE |
3051 | if (WINDOW_LIVE_P (window)) |
3052 | Fselect_window (window, Qt); | |
9397e56f MR |
3053 | } |
3054 | ||
27e498e6 | 3055 | static void |
9397e56f MR |
3056 | select_frame_norecord (Lisp_Object frame) |
3057 | { | |
27e498e6 PE |
3058 | if (FRAME_LIVE_P (XFRAME (frame))) |
3059 | Fselect_frame (frame, Qt); | |
9397e56f | 3060 | } |
6b61353c | 3061 | |
562dd5e9 MR |
3062 | void |
3063 | run_window_configuration_change_hook (struct frame *f) | |
3064 | { | |
d311d28c | 3065 | ptrdiff_t count = SPECPDL_INDEX (); |
562dd5e9 MR |
3066 | Lisp_Object frame, global_wcch |
3067 | = Fdefault_value (Qwindow_configuration_change_hook); | |
3068 | XSETFRAME (frame, f); | |
6b61353c | 3069 | |
d1f55f16 | 3070 | if (NILP (Vrun_hooks) || !NILP (inhibit_lisp_code)) |
562dd5e9 | 3071 | return; |
6b61353c | 3072 | |
562dd5e9 MR |
3073 | /* Use the right buffer. Matters when running the local hooks. */ |
3074 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
6b61353c | 3075 | { |
66322887 | 3076 | record_unwind_current_buffer (); |
562dd5e9 MR |
3077 | Fset_buffer (Fwindow_buffer (Qnil)); |
3078 | } | |
6a44ffb3 | 3079 | |
1a13852e MR |
3080 | if (SELECTED_FRAME () != f) |
3081 | { | |
d2a95ffb | 3082 | record_unwind_protect (select_frame_norecord, selected_frame); |
1a13852e MR |
3083 | select_frame_norecord (frame); |
3084 | } | |
3085 | ||
6a44ffb3 SM |
3086 | /* Look for buffer-local values. */ |
3087 | { | |
3088 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
3089 | for (; CONSP (windows); windows = XCDR (windows)) | |
3090 | { | |
3091 | Lisp_Object window = XCAR (windows); | |
3092 | Lisp_Object buffer = Fwindow_buffer (window); | |
3093 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
3094 | buffer))) | |
3095 | { | |
d311d28c | 3096 | ptrdiff_t inner_count = SPECPDL_INDEX (); |
d2a95ffb | 3097 | record_unwind_protect (select_window_norecord, selected_window); |
6a44ffb3 SM |
3098 | select_window_norecord (window); |
3099 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
3100 | buffer)); | |
46a4ce9e | 3101 | unbind_to (inner_count, Qnil); |
fec89261 | 3102 | } |
6a44ffb3 SM |
3103 | } |
3104 | } | |
047aaeb9 | 3105 | |
6a44ffb3 SM |
3106 | run_funs (global_wcch); |
3107 | unbind_to (count, Qnil); | |
ef264c42 SM |
3108 | } |
3109 | ||
1a13852e | 3110 | DEFUN ("run-window-configuration-change-hook", Frun_window_configuration_change_hook, |
d9f07150 | 3111 | Srun_window_configuration_change_hook, 0, 1, 0, |
68f8f1c0 | 3112 | doc: /* Run `window-configuration-change-hook' for FRAME. |
d9f07150 | 3113 | If FRAME is omitted or nil, it defaults to the selected frame. */) |
c4b6914d | 3114 | (Lisp_Object frame) |
1a13852e | 3115 | { |
d9f07150 | 3116 | run_window_configuration_change_hook (decode_live_frame (frame)); |
1a13852e MR |
3117 | return Qnil; |
3118 | } | |
3119 | ||
5500c422 GM |
3120 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3121 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3122 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3123 | margins, fringes, and scroll-bar settings of the window are not | |
3124 | reset from the buffer's local settings. */ | |
7ab12479 | 3125 | |
5500c422 | 3126 | void |
748fa866 DA |
3127 | set_window_buffer (Lisp_Object window, Lisp_Object buffer, |
3128 | bool run_hooks_p, bool keep_margins_p) | |
5500c422 GM |
3129 | { |
3130 | struct window *w = XWINDOW (window); | |
3131 | struct buffer *b = XBUFFER (buffer); | |
d311d28c | 3132 | ptrdiff_t count = SPECPDL_INDEX (); |
e74aeda8 | 3133 | int samebuf = EQ (buffer, w->contents); |
7ab12479 | 3134 | |
e8c17b81 | 3135 | wset_buffer (w, buffer); |
86e48436 RS |
3136 | |
3137 | if (EQ (window, selected_window)) | |
39eb03f1 | 3138 | bset_last_selected_window (b, window); |
beb4e312 | 3139 | |
c49a0495 KS |
3140 | /* Let redisplay errors through. */ |
3141 | b->display_error_modiff = 0; | |
3142 | ||
beb4e312 | 3143 | /* Update time stamps of buffer display. */ |
4b4deea2 | 3144 | if (INTEGERP (BVAR (b, display_count))) |
39eb03f1 PE |
3145 | bset_display_count (b, make_number (XINT (BVAR (b, display_count)) + 1)); |
3146 | bset_display_time (b, Fcurrent_time ()); | |
86e48436 | 3147 | |
02455cb6 DA |
3148 | w->window_end_pos = 0; |
3149 | w->window_end_vpos = 0; | |
c80016b3 | 3150 | w->last_cursor_vpos = 0; |
9d93ce29 | 3151 | |
c3b232e4 | 3152 | if (!(keep_margins_p && samebuf)) |
23fe745a | 3153 | { /* If we're not actually changing the buffer, don't reset hscroll and |
c3b232e4 SM |
3154 | vscroll. This case happens for example when called from |
3155 | change_frame_size_1, where we use a dummy call to | |
3156 | Fset_window_buffer on the frame's selected window (and no other) | |
3157 | just in order to run window-configuration-change-hook. | |
3158 | Resetting hscroll and vscroll here is problematic for things like | |
3159 | image-mode and doc-view-mode since it resets the image's position | |
3160 | whenever we resize the frame. */ | |
80b00b08 | 3161 | w->hscroll = w->min_hscroll = 0; |
c3b232e4 | 3162 | w->vscroll = 0; |
d3d50620 DA |
3163 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
3164 | set_marker_restricted (w->start, | |
c3b232e4 SM |
3165 | make_number (b->last_window_start), |
3166 | buffer); | |
c98ff5dd DA |
3167 | w->start_at_line_beg = 0; |
3168 | w->force_start = 0; | |
c3b232e4 SM |
3169 | } |
3170 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
3171 | I doubt it's worth the trouble. */ | |
7ab12479 | 3172 | windows_or_buffers_changed++; |
5b03d3c0 | 3173 | |
da39107c | 3174 | /* We must select BUFFER for running the window-scroll-functions. */ |
5b03d3c0 RS |
3175 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3176 | because that might itself be a local variable. */ | |
da39107c | 3177 | if (window_initialized) |
5b03d3c0 | 3178 | { |
66322887 | 3179 | record_unwind_current_buffer (); |
5b03d3c0 RS |
3180 | Fset_buffer (buffer); |
3181 | } | |
3182 | ||
d3d50620 | 3183 | XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type); |
a1562258 | 3184 | |
949cf20f KS |
3185 | if (!keep_margins_p) |
3186 | { | |
3187 | /* Set left and right marginal area width etc. from buffer. */ | |
25554267 DA |
3188 | set_window_fringes (w, BVAR (b, left_fringe_width), |
3189 | BVAR (b, right_fringe_width), | |
3190 | BVAR (b, fringes_outside_margins)); | |
3191 | set_window_scroll_bars (w, BVAR (b, scroll_bar_width), | |
3192 | BVAR (b, vertical_scroll_bar_type), Qnil); | |
3193 | set_window_margins (w, BVAR (b, left_margin_cols), | |
3194 | BVAR (b, right_margin_cols)); | |
3195 | apply_window_adjustment (w); | |
949cf20f | 3196 | } |
7ab12479 | 3197 | |
5500c422 GM |
3198 | if (run_hooks_p) |
3199 | { | |
3200 | if (! NILP (Vwindow_scroll_functions)) | |
3201 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
d3d50620 | 3202 | Fmarker_position (w->start)); |
ef264c42 | 3203 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
5500c422 | 3204 | } |
543f5fb1 | 3205 | |
5b03d3c0 | 3206 | unbind_to (count, Qnil); |
5500c422 | 3207 | } |
5b03d3c0 | 3208 | |
a7ca3326 | 3209 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
d653c8cc | 3210 | doc: /* Make WINDOW display BUFFER-OR-NAME as its contents. |
52162052 | 3211 | WINDOW must be a live window and defaults to the selected one. |
9397e56f MR |
3212 | BUFFER-OR-NAME must be a buffer or the name of an existing buffer. |
3213 | ||
3214 | Optional third argument KEEP-MARGINS non-nil means that WINDOW's current | |
3215 | display margins, fringe widths, and scroll bar settings are preserved; | |
3216 | the default is to reset these from the local settings for BUFFER-OR-NAME | |
3217 | or the frame defaults. Return nil. | |
d653c8cc | 3218 | |
7bfac547 MR |
3219 | This function throws an error when WINDOW is strongly dedicated to its |
3220 | buffer (that is `window-dedicated-p' returns t for WINDOW) and does not | |
3221 | already display BUFFER-OR-NAME. | |
6cb4a892 | 3222 | |
8fef9de1 MR |
3223 | This function runs `window-scroll-functions' before running |
3224 | `window-configuration-change-hook'. */) | |
5842a27b | 3225 | (register Lisp_Object window, Lisp_Object buffer_or_name, Lisp_Object keep_margins) |
5500c422 | 3226 | { |
d653c8cc | 3227 | register Lisp_Object tem, buffer; |
52162052 | 3228 | register struct window *w = decode_live_window (window); |
5500c422 | 3229 | |
bed0c171 | 3230 | XSETWINDOW (window, w); |
d653c8cc | 3231 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 3232 | CHECK_BUFFER (buffer); |
e578f381 | 3233 | if (!BUFFER_LIVE_P (XBUFFER (buffer))) |
5500c422 GM |
3234 | error ("Attempt to display deleted buffer"); |
3235 | ||
e74aeda8 | 3236 | tem = w->contents; |
aac0c6e3 MR |
3237 | if (NILP (tem)) |
3238 | error ("Window is deleted"); | |
822995f8 | 3239 | else |
5500c422 | 3240 | { |
9397e56f MR |
3241 | if (!EQ (tem, buffer)) |
3242 | { | |
d3d50620 | 3243 | if (EQ (w->dedicated, Qt)) |
9397e56f MR |
3244 | /* WINDOW is strongly dedicated to its buffer, signal an |
3245 | error. */ | |
3246 | error ("Window is dedicated to `%s'", SDATA (BVAR (XBUFFER (tem), name))); | |
3247 | else | |
3248 | /* WINDOW is weakly dedicated to its buffer, reset | |
e4769531 | 3249 | dedication. */ |
e8c17b81 | 3250 | wset_dedicated (w, Qnil); |
9397e56f MR |
3251 | |
3252 | call1 (Qrecord_window_buffer, window); | |
3253 | } | |
5500c422 GM |
3254 | |
3255 | unshow_buffer (w); | |
3256 | } | |
3257 | ||
949cf20f | 3258 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 | 3259 | |
9397e56f | 3260 | return Qnil; |
c6932ecd | 3261 | } |
b7354ddf | 3262 | \f |
7e5cf297 | 3263 | static Lisp_Object |
971de7fb | 3264 | display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, Lisp_Object override_frame) |
d07f802a | 3265 | { |
87478b52 | 3266 | return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); |
d07f802a RS |
3267 | } |
3268 | ||
6b61353c KH |
3269 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, |
3270 | 0, 1, 0, | |
5a1048a5 | 3271 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 3272 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3273 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c | 3274 | displaying that buffer. */) |
5842a27b | 3275 | (Lisp_Object object) |
6b61353c KH |
3276 | { |
3277 | if (NILP (object)) | |
3278 | { | |
3279 | windows_or_buffers_changed++; | |
3280 | update_mode_lines++; | |
3281 | return Qt; | |
3282 | } | |
3283 | ||
3284 | if (WINDOWP (object)) | |
3285 | { | |
3286 | struct window *w = XWINDOW (object); | |
3287 | mark_window_display_accurate (object, 0); | |
c98ff5dd | 3288 | w->update_mode_line = 1; |
e74aeda8 DA |
3289 | if (BUFFERP (w->contents)) |
3290 | XBUFFER (w->contents)->prevent_redisplay_optimizations_p = 1; | |
6b61353c KH |
3291 | ++update_mode_lines; |
3292 | return Qt; | |
3293 | } | |
0cc1039f | 3294 | |
6b61353c KH |
3295 | if (STRINGP (object)) |
3296 | object = Fget_buffer (object); | |
c6afe371 DA |
3297 | if (BUFFERP (object) && BUFFER_LIVE_P (XBUFFER (object)) |
3298 | && buffer_window_count (XBUFFER (object))) | |
6b61353c | 3299 | { |
c6afe371 DA |
3300 | /* If buffer is live and shown in at least one window, find |
3301 | all windows showing this buffer and force update of them. */ | |
6b61353c KH |
3302 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); |
3303 | return NILP (object) ? Qnil : Qt; | |
3304 | } | |
3305 | ||
3306 | /* If nothing suitable was found, just return. | |
3307 | We could signal an error, but this feature will typically be used | |
3308 | asynchronously in timers or process sentinels, so we don't. */ | |
3309 | return Qnil; | |
3310 | } | |
3311 | ||
1f76f6f5 | 3312 | /* Obsolete since 24.3. */ |
7ab12479 | 3313 | void |
971de7fb | 3314 | temp_output_buffer_show (register Lisp_Object buf) |
7ab12479 JB |
3315 | { |
3316 | register struct buffer *old = current_buffer; | |
3317 | register Lisp_Object window; | |
3318 | register struct window *w; | |
3319 | ||
39eb03f1 | 3320 | bset_directory (XBUFFER (buf), BVAR (current_buffer, directory)); |
bccd3dd1 | 3321 | |
7ab12479 | 3322 | Fset_buffer (buf); |
c6367666 | 3323 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3324 | BEGV = BEG; |
3325 | ZV = Z; | |
3326 | SET_PT (BEG); | |
7ab12479 JB |
3327 | set_buffer_internal (old); |
3328 | ||
e67a1dea | 3329 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 | 3330 | call1 (Vtemp_buffer_show_function, buf); |
0a357e98 | 3331 | else if (WINDOW_LIVE_P (window = display_buffer (buf, Qnil, Qnil))) |
7ab12479 | 3332 | { |
d3d50620 | 3333 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3334 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3335 | Vminibuf_scroll_window = window; |
3336 | w = XWINDOW (window); | |
80b00b08 DA |
3337 | w->hscroll = 0; |
3338 | w->min_hscroll = 0; | |
d3d50620 DA |
3339 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3340 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3341 | |
beb4e312 | 3342 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3343 | and its buffer current. */ |
dee091a3 | 3344 | { |
d311d28c | 3345 | ptrdiff_t count = SPECPDL_INDEX (); |
dee091a3 JD |
3346 | Lisp_Object prev_window, prev_buffer; |
3347 | prev_window = selected_window; | |
3348 | XSETBUFFER (prev_buffer, old); | |
3349 | ||
3350 | /* Select the window that was chosen, for running the hook. | |
3351 | Note: Both Fselect_window and select_window_norecord may | |
3352 | set-buffer to the buffer displayed in the window, | |
3353 | so we need to save the current buffer. --stef */ | |
27e498e6 | 3354 | record_unwind_protect (restore_buffer, prev_buffer); |
dee091a3 JD |
3355 | record_unwind_protect (select_window_norecord, prev_window); |
3356 | Fselect_window (window, Qt); | |
e74aeda8 | 3357 | Fset_buffer (w->contents); |
dee091a3 JD |
3358 | Frun_hooks (1, &Qtemp_buffer_show_hook); |
3359 | unbind_to (count, Qnil); | |
3360 | } | |
2cccc823 | 3361 | } |
7ab12479 JB |
3362 | } |
3363 | \f | |
1a13852e MR |
3364 | /* Make new window, have it replace WINDOW in window-tree, and make |
3365 | WINDOW its only vertical child (HORFLAG 1 means make WINDOW its only | |
3366 | horizontal child). */ | |
3367 | static void | |
748fa866 | 3368 | make_parent_window (Lisp_Object window, bool horflag) |
1a13852e MR |
3369 | { |
3370 | Lisp_Object parent; | |
3371 | register struct window *o, *p; | |
1a13852e MR |
3372 | |
3373 | o = XWINDOW (window); | |
3374 | p = allocate_window (); | |
aa754e6a | 3375 | memcpy ((char *) p + sizeof (struct vectorlike_header), |
62efea5e | 3376 | (char *) o + sizeof (struct vectorlike_header), |
663e2b3f | 3377 | word_size * VECSIZE (struct window)); |
e74aeda8 | 3378 | /* P's buffer slot may change from nil to a buffer... */ |
98a07056 | 3379 | adjust_window_count (p, 1); |
1a13852e MR |
3380 | XSETWINDOW (parent, p); |
3381 | ||
1a13852e MR |
3382 | replace_window (window, parent, 1); |
3383 | ||
e8c17b81 PE |
3384 | wset_next (o, Qnil); |
3385 | wset_prev (o, Qnil); | |
3386 | wset_parent (o, parent); | |
e74aeda8 | 3387 | /* ...but now P becomes an internal window. */ |
e8c17b81 PE |
3388 | wset_start (p, Qnil); |
3389 | wset_pointm (p, Qnil); | |
3390 | wset_buffer (p, Qnil); | |
e74aeda8 | 3391 | wset_combination (p, horflag, window); |
e8c17b81 PE |
3392 | wset_combination_limit (p, Qnil); |
3393 | wset_window_parameters (p, Qnil); | |
1a13852e MR |
3394 | } |
3395 | ||
496e208e MR |
3396 | /* Make new window from scratch. */ |
3397 | Lisp_Object | |
3398 | make_window (void) | |
3399 | { | |
3400 | Lisp_Object window; | |
3401 | register struct window *w; | |
3402 | ||
3403 | w = allocate_window (); | |
62efea5e DA |
3404 | /* Initialize Lisp data. Note that allocate_window initializes all |
3405 | Lisp data to nil, so do it only for slots which should not be nil. */ | |
e8c17b81 PE |
3406 | wset_normal_lines (w, make_float (1.0)); |
3407 | wset_normal_cols (w, make_float (1.0)); | |
3408 | wset_new_total (w, make_number (0)); | |
3409 | wset_new_normal (w, make_number (0)); | |
3410 | wset_start (w, Fmake_marker ()); | |
3411 | wset_pointm (w, Fmake_marker ()); | |
3412 | wset_vertical_scroll_bar_type (w, Qt); | |
e99f70c8 SM |
3413 | /* These Lisp fields are marked specially so they're not set to nil by |
3414 | allocate_window. */ | |
3415 | wset_prev_buffers (w, Qnil); | |
3416 | wset_next_buffers (w, Qnil); | |
62efea5e DA |
3417 | |
3418 | /* Initialize non-Lisp data. Note that allocate_window zeroes out all | |
3419 | non-Lisp data, so do it only for slots which should not be zero. */ | |
496e208e | 3420 | w->nrows_scale_factor = w->ncols_scale_factor = 1; |
9e37ee3b | 3421 | w->left_fringe_width = w->right_fringe_width = -1; |
b9695828 | 3422 | w->mode_line_height = w->header_line_height = -1; |
496e208e MR |
3423 | w->phys_cursor_type = -1; |
3424 | w->phys_cursor_width = -1; | |
38a2c910 | 3425 | w->scroll_bar_width = -1; |
422ff52b | 3426 | w->column_number_displayed = -1; |
62efea5e | 3427 | |
496e208e MR |
3428 | /* Reset window_list. */ |
3429 | Vwindow_list = Qnil; | |
3430 | /* Return window. */ | |
3431 | XSETWINDOW (window, w); | |
3432 | return window; | |
3433 | } | |
3434 | \f | |
3435 | DEFUN ("set-window-new-total", Fset_window_new_total, Sset_window_new_total, 2, 3, 0, | |
3436 | doc: /* Set new total size of WINDOW to SIZE. | |
52162052 | 3437 | WINDOW must be a valid window and defaults to the selected one. |
496e208e MR |
3438 | Return SIZE. |
3439 | ||
3440 | Optional argument ADD non-nil means add SIZE to the new total size of | |
3441 | WINDOW and return the sum. | |
3442 | ||
be7f5545 | 3443 | Note: This function does not operate on any child windows of WINDOW. */) |
496e208e MR |
3444 | (Lisp_Object window, Lisp_Object size, Lisp_Object add) |
3445 | { | |
52162052 | 3446 | struct window *w = decode_valid_window (window); |
496e208e MR |
3447 | |
3448 | CHECK_NUMBER (size); | |
3449 | if (NILP (add)) | |
e8c17b81 | 3450 | wset_new_total (w, size); |
496e208e | 3451 | else |
e8c17b81 | 3452 | wset_new_total (w, make_number (XINT (w->new_total) + XINT (size))); |
496e208e | 3453 | |
d3d50620 | 3454 | return w->new_total; |
496e208e MR |
3455 | } |
3456 | ||
3457 | DEFUN ("set-window-new-normal", Fset_window_new_normal, Sset_window_new_normal, 1, 2, 0, | |
3458 | doc: /* Set new normal size of WINDOW to SIZE. | |
52162052 | 3459 | WINDOW must be a valid window and defaults to the selected one. |
496e208e MR |
3460 | Return SIZE. |
3461 | ||
be7f5545 | 3462 | Note: This function does not operate on any child windows of WINDOW. */) |
496e208e MR |
3463 | (Lisp_Object window, Lisp_Object size) |
3464 | { | |
e8c17b81 PE |
3465 | wset_new_normal (decode_valid_window (window), size); |
3466 | return size; | |
7ab12479 JB |
3467 | } |
3468 | ||
1a13852e MR |
3469 | /* Return 1 if setting w->total_lines (w->total_cols if HORFLAG is |
3470 | non-zero) to w->new_total would result in correct heights (widths) | |
be7f5545 | 3471 | for window W and recursively all child windows of W. |
1a13852e MR |
3472 | |
3473 | Note: This function does not check any of `window-fixed-size-p', | |
3474 | `window-min-height' or `window-min-width'. It does check that window | |
3475 | sizes do not drop below one line (two columns). */ | |
4b66faf3 | 3476 | static int |
748fa866 | 3477 | window_resize_check (struct window *w, bool horflag) |
1a13852e MR |
3478 | { |
3479 | struct window *c; | |
3480 | ||
e74aeda8 | 3481 | if (WINDOW_VERTICAL_COMBINATION_P (w)) |
1a13852e MR |
3482 | /* W is a vertical combination. */ |
3483 | { | |
e74aeda8 | 3484 | c = XWINDOW (w->contents); |
1a13852e | 3485 | if (horflag) |
be7f5545 | 3486 | /* All child windows of W must have the same width as W. */ |
1a13852e MR |
3487 | { |
3488 | while (c) | |
3489 | { | |
d3d50620 | 3490 | if ((XINT (c->new_total) != XINT (w->new_total)) |
d615d6d2 | 3491 | || !window_resize_check (c, horflag)) |
1a13852e | 3492 | return 0; |
d3d50620 | 3493 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3494 | } |
3495 | return 1; | |
3496 | } | |
3497 | else | |
be7f5545 MR |
3498 | /* The sum of the heights of the child windows of W must equal |
3499 | W's height. */ | |
1a13852e MR |
3500 | { |
3501 | int sum_of_sizes = 0; | |
3502 | while (c) | |
3503 | { | |
d615d6d2 | 3504 | if (!window_resize_check (c, horflag)) |
1a13852e | 3505 | return 0; |
d3d50620 DA |
3506 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); |
3507 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e | 3508 | } |
d3d50620 | 3509 | return (sum_of_sizes == XINT (w->new_total)); |
1a13852e MR |
3510 | } |
3511 | } | |
e74aeda8 | 3512 | else if (WINDOW_HORIZONTAL_COMBINATION_P (w)) |
1a13852e MR |
3513 | /* W is a horizontal combination. */ |
3514 | { | |
e74aeda8 | 3515 | c = XWINDOW (w->contents); |
1a13852e | 3516 | if (horflag) |
be7f5545 | 3517 | /* The sum of the widths of the child windows of W must equal W's |
1a13852e MR |
3518 | width. */ |
3519 | { | |
3520 | int sum_of_sizes = 0; | |
3521 | while (c) | |
3522 | { | |
d615d6d2 | 3523 | if (!window_resize_check (c, horflag)) |
1a13852e | 3524 | return 0; |
d3d50620 DA |
3525 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); |
3526 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e | 3527 | } |
d3d50620 | 3528 | return (sum_of_sizes == XINT (w->new_total)); |
1a13852e MR |
3529 | } |
3530 | else | |
be7f5545 | 3531 | /* All child windows of W must have the same height as W. */ |
1a13852e MR |
3532 | { |
3533 | while (c) | |
3534 | { | |
d3d50620 | 3535 | if ((XINT (c->new_total) != XINT (w->new_total)) |
d615d6d2 | 3536 | || !window_resize_check (c, horflag)) |
1a13852e | 3537 | return 0; |
d3d50620 | 3538 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3539 | } |
3540 | return 1; | |
3541 | } | |
3542 | } | |
3543 | else | |
3544 | /* A leaf window. Make sure it's not too small. The following | |
3545 | hardcodes the values of `window-safe-min-width' (2) and | |
3546 | `window-safe-min-height' (1) which are defined in window.el. */ | |
d3d50620 | 3547 | return XINT (w->new_total) >= (horflag ? 2 : 1); |
1a13852e MR |
3548 | } |
3549 | ||
3550 | /* Set w->total_lines (w->total_cols if HORIZONTAL is non-zero) to | |
be7f5545 MR |
3551 | w->new_total for window W and recursively all child windows of W. |
3552 | Also calculate and assign the new vertical (horizontal) start | |
3553 | positions of each of these windows. | |
1a13852e MR |
3554 | |
3555 | This function does not perform any error checks. Make sure you have | |
d615d6d2 | 3556 | run window_resize_check on W before applying this function. */ |
440a42e3 | 3557 | static void |
748fa866 | 3558 | window_resize_apply (struct window *w, bool horflag) |
1a13852e | 3559 | { |
46a4ce9e | 3560 | struct window *c; |
1a13852e MR |
3561 | int pos; |
3562 | ||
3563 | /* Note: Assigning new_normal requires that the new total size of the | |
3564 | parent window has been set *before*. */ | |
3565 | if (horflag) | |
3566 | { | |
5f24fa51 | 3567 | w->total_cols = XFASTINT (w->new_total); |
d3d50620 | 3568 | if (NUMBERP (w->new_normal)) |
e8c17b81 | 3569 | wset_normal_cols (w, w->new_normal); |
1a13852e | 3570 | |
5f24fa51 | 3571 | pos = w->left_col; |
1a13852e MR |
3572 | } |
3573 | else | |
3574 | { | |
5f24fa51 | 3575 | w->total_lines = XFASTINT (w->new_total); |
d3d50620 | 3576 | if (NUMBERP (w->new_normal)) |
e8c17b81 | 3577 | wset_normal_lines (w, w->new_normal); |
1a13852e | 3578 | |
5f24fa51 | 3579 | pos = w->top_line; |
1a13852e MR |
3580 | } |
3581 | ||
e74aeda8 | 3582 | if (WINDOW_VERTICAL_COMBINATION_P (w)) |
1a13852e MR |
3583 | /* W is a vertical combination. */ |
3584 | { | |
e74aeda8 | 3585 | c = XWINDOW (w->contents); |
1a13852e MR |
3586 | while (c) |
3587 | { | |
3588 | if (horflag) | |
5f24fa51 | 3589 | c->left_col = pos; |
1a13852e | 3590 | else |
5f24fa51 | 3591 | c->top_line = pos; |
d615d6d2 | 3592 | window_resize_apply (c, horflag); |
1a13852e | 3593 | if (!horflag) |
5f24fa51 | 3594 | pos = pos + c->total_lines; |
d3d50620 | 3595 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3596 | } |
3597 | } | |
e74aeda8 | 3598 | else if (WINDOW_HORIZONTAL_COMBINATION_P (w)) |
1a13852e MR |
3599 | /* W is a horizontal combination. */ |
3600 | { | |
e74aeda8 | 3601 | c = XWINDOW (w->contents); |
1a13852e MR |
3602 | while (c) |
3603 | { | |
3604 | if (horflag) | |
5f24fa51 | 3605 | c->left_col = pos; |
1a13852e | 3606 | else |
5f24fa51 | 3607 | c->top_line = pos; |
d615d6d2 | 3608 | window_resize_apply (c, horflag); |
1a13852e | 3609 | if (horflag) |
5f24fa51 | 3610 | pos = pos + c->total_cols; |
d3d50620 | 3611 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3612 | } |
3613 | } | |
1a13852e MR |
3614 | } |
3615 | ||
3616 | ||
d9f07150 | 3617 | DEFUN ("window-resize-apply", Fwindow_resize_apply, Swindow_resize_apply, 0, 2, 0, |
1a13852e | 3618 | doc: /* Apply requested size values for window-tree of FRAME. |
d9f07150 DA |
3619 | If FRAME is omitted or nil, it defaults to the selected frame. |
3620 | ||
3621 | Optional argument HORIZONTAL omitted or nil means apply requested | |
3622 | height values. HORIZONTAL non-nil means apply requested width values. | |
1a13852e MR |
3623 | |
3624 | This function checks whether the requested values sum up to a valid | |
be7f5545 MR |
3625 | window layout, recursively assigns the new sizes of all child windows |
3626 | and calculates and assigns the new start positions of these windows. | |
1a13852e MR |
3627 | |
3628 | Note: This function does not check any of `window-fixed-size-p', | |
3629 | `window-min-height' or `window-min-width'. All these checks have to | |
3630 | be applied on the Elisp level. */) | |
3631 | (Lisp_Object frame, Lisp_Object horizontal) | |
3632 | { | |
d9f07150 DA |
3633 | struct frame *f = decode_live_frame (frame); |
3634 | struct window *r = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
748fa866 | 3635 | bool horflag = !NILP (horizontal); |
1a13852e | 3636 | |
d615d6d2 | 3637 | if (!window_resize_check (r, horflag) |
5f24fa51 DA |
3638 | || (XINT (r->new_total) |
3639 | != (horflag ? r->total_cols : r->total_lines))) | |
1a13852e MR |
3640 | return Qnil; |
3641 | ||
4d7e6e51 | 3642 | block_input (); |
d615d6d2 | 3643 | window_resize_apply (r, horflag); |
1a13852e MR |
3644 | |
3645 | windows_or_buffers_changed++; | |
3646 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3647 | ||
bd0443bb | 3648 | adjust_frame_glyphs (f); |
4d7e6e51 | 3649 | unblock_input (); |
1a13852e MR |
3650 | |
3651 | run_window_configuration_change_hook (f); | |
3652 | ||
3653 | return Qt; | |
3654 | } | |
3655 | ||
3656 | ||
3657 | /* Resize frame F's windows when number of lines of F is set to SIZE. | |
3658 | HORFLAG 1 means resize windows when number of columns of F is set to | |
3659 | SIZE. | |
3660 | ||
3661 | This function can delete all windows but the selected one in order to | |
3662 | satisfy the request. The result will be meaningful if and only if | |
3663 | F's windows have meaningful sizes when you call this. */ | |
3664 | void | |
748fa866 | 3665 | resize_frame_windows (struct frame *f, int size, bool horflag) |
1a13852e | 3666 | { |
e69b0960 | 3667 | Lisp_Object root = f->root_window; |
1a13852e | 3668 | struct window *r = XWINDOW (root); |
e69b0960 | 3669 | Lisp_Object mini = f->minibuffer_window; |
1a13852e MR |
3670 | struct window *m; |
3671 | /* new_size is the new size of the frame's root window. */ | |
3672 | int new_size = (horflag | |
3673 | ? size | |
3674 | : (size | |
3675 | - FRAME_TOP_MARGIN (f) | |
3676 | - ((FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3677 | ? 1 : 0))); | |
3678 | ||
5f24fa51 | 3679 | r->top_line = FRAME_TOP_MARGIN (f); |
e74aeda8 | 3680 | if (WINDOW_LEAF_P (r)) |
1a13852e MR |
3681 | /* For a leaf root window just set the size. */ |
3682 | if (horflag) | |
5f24fa51 | 3683 | r->total_cols = new_size; |
1a13852e | 3684 | else |
5f24fa51 | 3685 | r->total_lines = new_size; |
1a13852e MR |
3686 | else |
3687 | { | |
3688 | /* old_size is the old size of the frame's root window. */ | |
5f24fa51 | 3689 | int old_size = horflag ? r->total_cols : r->total_lines; |
1a13852e MR |
3690 | Lisp_Object delta; |
3691 | ||
3692 | XSETINT (delta, new_size - old_size); | |
3693 | /* Try a "normal" resize first. */ | |
3694 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qnil); | |
3a45383a | 3695 | if (window_resize_check (r, horflag) |
d3d50620 | 3696 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3697 | window_resize_apply (r, horflag); |
1a13852e MR |
3698 | else |
3699 | { | |
3700 | /* Try with "reasonable" minimum sizes next. */ | |
3701 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qt); | |
d615d6d2 | 3702 | if (window_resize_check (r, horflag) |
d3d50620 | 3703 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3704 | window_resize_apply (r, horflag); |
1a13852e MR |
3705 | else |
3706 | { | |
3707 | /* Finally, try with "safe" minimum sizes. */ | |
3708 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qsafe); | |
d615d6d2 | 3709 | if (window_resize_check (r, horflag) |
d3d50620 | 3710 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3711 | window_resize_apply (r, horflag); |
1a13852e MR |
3712 | else |
3713 | { | |
3714 | /* We lost. Delete all windows but the frame's | |
3715 | selected one. */ | |
e69b0960 | 3716 | root = f->selected_window; |
1a13852e MR |
3717 | Fdelete_other_windows_internal (root, Qnil); |
3718 | if (horflag) | |
5f24fa51 | 3719 | XWINDOW (root)->total_cols = new_size; |
1a13852e | 3720 | else |
5f24fa51 | 3721 | XWINDOW (root)->total_lines = new_size; |
1a13852e MR |
3722 | } |
3723 | } | |
3724 | } | |
3725 | } | |
3726 | ||
3727 | if (FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3728 | { | |
3729 | m = XWINDOW (mini); | |
3730 | if (horflag) | |
5f24fa51 | 3731 | m->total_cols = size; |
1a13852e MR |
3732 | else |
3733 | { | |
3734 | /* Are we sure we always want 1 line here? */ | |
5f24fa51 DA |
3735 | m->total_lines = 1; |
3736 | m->top_line = r->top_line + r->total_lines; | |
1a13852e MR |
3737 | } |
3738 | } | |
dca778d5 MR |
3739 | |
3740 | windows_or_buffers_changed++; | |
1a13852e MR |
3741 | } |
3742 | ||
3743 | ||
3744 | DEFUN ("split-window-internal", Fsplit_window_internal, Ssplit_window_internal, 4, 4, 0, | |
3745 | doc: /* Split window OLD. | |
3746 | Second argument TOTAL-SIZE specifies the number of lines or columns of the | |
9397e56f | 3747 | new window. In any case TOTAL-SIZE must be a positive integer. |
1a13852e MR |
3748 | |
3749 | Third argument SIDE nil (or `below') specifies that the new window shall | |
3750 | be located below WINDOW. SIDE `above' means the new window shall be | |
3751 | located above WINDOW. In both cases TOTAL-SIZE specifies the number of | |
3752 | lines of the new window including space reserved for the mode and/or | |
3753 | header line. | |
3754 | ||
3755 | SIDE t (or `right') specifies that the new window shall be located on | |
3756 | the right side of WINDOW. SIDE `left' means the new window shall be | |
3757 | located on the left of WINDOW. In both cases TOTAL-SIZE specifies the | |
3758 | number of columns of the new window including space reserved for fringes | |
3759 | and the scrollbar or a divider column. | |
3760 | ||
3761 | Fourth argument NORMAL-SIZE specifies the normal size of the new window | |
3762 | according to the SIDE argument. | |
3763 | ||
3764 | The new total and normal sizes of all involved windows must have been | |
3765 | set correctly. See the code of `split-window' for how this is done. */) | |
3766 | (Lisp_Object old, Lisp_Object total_size, Lisp_Object side, Lisp_Object normal_size) | |
3767 | { | |
3768 | /* OLD (*o) is the window we have to split. (*p) is either OLD's | |
3769 | parent window or an internal window we have to install as OLD's new | |
3770 | parent. REFERENCE (*r) must denote a live window, or is set to OLD | |
3771 | provided OLD is a leaf window, or to the frame's selected window. | |
3772 | NEW (*n) is the new window created with some parameters taken from | |
3773 | REFERENCE (*r). */ | |
3774 | register Lisp_Object new, frame, reference; | |
3775 | register struct window *o, *p, *n, *r; | |
3776 | struct frame *f; | |
748fa866 | 3777 | bool horflag |
1a13852e MR |
3778 | /* HORFLAG is 1 when we split side-by-side, 0 otherwise. */ |
3779 | = EQ (side, Qt) || EQ (side, Qleft) || EQ (side, Qright); | |
b6f67890 | 3780 | int combination_limit = 0; |
1a13852e MR |
3781 | |
3782 | CHECK_WINDOW (old); | |
3783 | o = XWINDOW (old); | |
3784 | frame = WINDOW_FRAME (o); | |
3785 | f = XFRAME (frame); | |
3786 | ||
3787 | CHECK_NUMBER (total_size); | |
3788 | ||
b6f67890 MR |
3789 | /* Set combination_limit to 1 if we have to make a new parent window. |
3790 | We do that if either `window-combination-limit' is t, or OLD has no | |
3791 | parent, or OLD is ortho-combined. */ | |
3792 | combination_limit = | |
8e17c9ba | 3793 | EQ (Vwindow_combination_limit, Qt) |
d3d50620 | 3794 | || NILP (o->parent) |
e74aeda8 DA |
3795 | || (horflag |
3796 | ? WINDOW_VERTICAL_COMBINATION_P (XWINDOW (o->parent)) | |
3797 | : WINDOW_HORIZONTAL_COMBINATION_P (XWINDOW (o->parent))); | |
1a13852e MR |
3798 | |
3799 | /* We need a live reference window to initialize some parameters. */ | |
3800 | if (WINDOW_LIVE_P (old)) | |
3801 | /* OLD is live, use it as reference window. */ | |
3802 | reference = old; | |
3803 | else | |
3804 | /* Use the frame's selected window as reference window. */ | |
3805 | reference = FRAME_SELECTED_WINDOW (f); | |
3806 | r = XWINDOW (reference); | |
3807 | ||
3808 | /* The following bugs are caught by `split-window'. */ | |
3809 | if (MINI_WINDOW_P (o)) | |
3810 | error ("Attempt to split minibuffer window"); | |
3811 | else if (XINT (total_size) < (horflag ? 2 : 1)) | |
3812 | error ("Size of new window too small (after split)"); | |
a0c2d0ae MR |
3813 | else if (!combination_limit && !NILP (Vwindow_combination_resize)) |
3814 | /* `window-combination-resize' non-nil means try to resize OLD's siblings | |
1a13852e MR |
3815 | proportionally. */ |
3816 | { | |
d3d50620 | 3817 | p = XWINDOW (o->parent); |
1a13852e | 3818 | /* Temporarily pretend we split the parent window. */ |
e8c17b81 | 3819 | wset_new_total |
5f24fa51 | 3820 | (p, make_number ((horflag ? p->total_cols : p->total_lines) |
077288cf | 3821 | - XINT (total_size))); |
d615d6d2 | 3822 | if (!window_resize_check (p, horflag)) |
1a13852e MR |
3823 | error ("Window sizes don't fit"); |
3824 | else | |
3825 | /* Undo the temporary pretension. */ | |
5f24fa51 DA |
3826 | wset_new_total (p, make_number |
3827 | (horflag ? p->total_cols : p->total_lines)); | |
1a13852e MR |
3828 | } |
3829 | else | |
3830 | { | |
d615d6d2 | 3831 | if (!window_resize_check (o, horflag)) |
1a13852e | 3832 | error ("Resizing old window failed"); |
d3d50620 | 3833 | else if (XINT (total_size) + XINT (o->new_total) |
5f24fa51 | 3834 | != (horflag ? o->total_cols : o->total_lines)) |
1a13852e MR |
3835 | error ("Sum of sizes of old and new window don't fit"); |
3836 | } | |
3837 | ||
3838 | /* This is our point of no return. */ | |
b6f67890 | 3839 | if (combination_limit) |
1a13852e MR |
3840 | { |
3841 | /* Save the old value of o->normal_cols/lines. It gets corrupted | |
3842 | by make_parent_window and we need it below for assigning it to | |
3843 | p->new_normal. */ | |
3a45383a | 3844 | Lisp_Object new_normal |
d3d50620 | 3845 | = horflag ? o->normal_cols : o->normal_lines; |
1a13852e MR |
3846 | |
3847 | make_parent_window (old, horflag); | |
d3d50620 | 3848 | p = XWINDOW (o->parent); |
fdaf534a MR |
3849 | if (EQ (Vwindow_combination_limit, Qt)) |
3850 | /* Store t in the new parent's combination_limit slot to avoid | |
3851 | that its children get merged into another window. */ | |
3852 | wset_combination_limit (p, Qt); | |
1a13852e | 3853 | /* These get applied below. */ |
5f24fa51 DA |
3854 | wset_new_total (p, make_number |
3855 | (horflag ? o->total_cols : o->total_lines)); | |
e8c17b81 | 3856 | wset_new_normal (p, new_normal); |
1a13852e MR |
3857 | } |
3858 | else | |
d3d50620 | 3859 | p = XWINDOW (o->parent); |
1a13852e MR |
3860 | |
3861 | windows_or_buffers_changed++; | |
3862 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3863 | new = make_window (); | |
3864 | n = XWINDOW (new); | |
e8c17b81 PE |
3865 | wset_frame (n, frame); |
3866 | wset_parent (n, o->parent); | |
1a13852e MR |
3867 | |
3868 | if (EQ (side, Qabove) || EQ (side, Qleft)) | |
3869 | { | |
e8c17b81 | 3870 | wset_prev (n, o->prev); |
d3d50620 | 3871 | if (NILP (n->prev)) |
e74aeda8 | 3872 | wset_combination (p, horflag, new); |
1a13852e | 3873 | else |
e8c17b81 PE |
3874 | wset_next (XWINDOW (n->prev), new); |
3875 | wset_next (n, old); | |
3876 | wset_prev (o, new); | |
1a13852e MR |
3877 | } |
3878 | else | |
3879 | { | |
e8c17b81 | 3880 | wset_next (n, o->next); |
d3d50620 | 3881 | if (!NILP (n->next)) |
e8c17b81 PE |
3882 | wset_prev (XWINDOW (n->next), new); |
3883 | wset_prev (n, old); | |
3884 | wset_next (o, new); | |
1a13852e MR |
3885 | } |
3886 | ||
9d93ce29 | 3887 | n->window_end_valid = 0; |
c80016b3 | 3888 | n->last_cursor_vpos = 0; |
1a13852e MR |
3889 | |
3890 | /* Get special geometry settings from reference window. */ | |
eeaf9bf3 DA |
3891 | n->left_margin_cols = r->left_margin_cols; |
3892 | n->right_margin_cols = r->right_margin_cols; | |
9e37ee3b DA |
3893 | n->left_fringe_width = r->left_fringe_width; |
3894 | n->right_fringe_width = r->right_fringe_width; | |
1a13852e | 3895 | n->fringes_outside_margins = r->fringes_outside_margins; |
38a2c910 | 3896 | n->scroll_bar_width = r->scroll_bar_width; |
e8c17b81 | 3897 | wset_vertical_scroll_bar_type (n, r->vertical_scroll_bar_type); |
1a13852e | 3898 | |
1a13852e MR |
3899 | /* Directly assign orthogonal coordinates and sizes. */ |
3900 | if (horflag) | |
3901 | { | |
5f24fa51 DA |
3902 | n->top_line = o->top_line; |
3903 | n->total_lines = o->total_lines; | |
1a13852e MR |
3904 | } |
3905 | else | |
3906 | { | |
5f24fa51 DA |
3907 | n->left_col = o->left_col; |
3908 | n->total_cols = o->total_cols; | |
1a13852e MR |
3909 | } |
3910 | ||
d615d6d2 | 3911 | /* Iso-coordinates and sizes are assigned by window_resize_apply, |
1a13852e | 3912 | get them ready here. */ |
e8c17b81 PE |
3913 | wset_new_total (n, total_size); |
3914 | wset_new_normal (n, normal_size); | |
1a13852e | 3915 | |
4d7e6e51 | 3916 | block_input (); |
d615d6d2 | 3917 | window_resize_apply (p, horflag); |
bd0443bb | 3918 | adjust_frame_glyphs (f); |
1a13852e MR |
3919 | /* Set buffer of NEW to buffer of reference window. Don't run |
3920 | any hooks. */ | |
e74aeda8 | 3921 | set_window_buffer (new, r->contents, 0, 1); |
4d7e6e51 | 3922 | unblock_input (); |
1a13852e MR |
3923 | |
3924 | /* Maybe we should run the scroll functions in Elisp (which already | |
3925 | runs the configuration change hook). */ | |
3926 | if (! NILP (Vwindow_scroll_functions)) | |
3927 | run_hook_with_args_2 (Qwindow_scroll_functions, new, | |
d3d50620 | 3928 | Fmarker_position (n->start)); |
1a13852e MR |
3929 | /* Return NEW. */ |
3930 | return new; | |
3931 | } | |
3932 | ||
3933 | ||
3934 | DEFUN ("delete-window-internal", Fdelete_window_internal, Sdelete_window_internal, 1, 1, 0, | |
3935 | doc: /* Remove WINDOW from its frame. | |
87e68db4 JB |
3936 | WINDOW defaults to the selected window. Return nil. |
3937 | Signal an error when WINDOW is the only window on its frame. */) | |
1a13852e MR |
3938 | (register Lisp_Object window) |
3939 | { | |
3940 | register Lisp_Object parent, sibling, frame, root; | |
3941 | struct window *w, *p, *s, *r; | |
3942 | struct frame *f; | |
e74aeda8 | 3943 | bool horflag, before_sibling = 0; |
1a13852e MR |
3944 | |
3945 | w = decode_any_window (window); | |
3946 | XSETWINDOW (window, w); | |
e74aeda8 | 3947 | if (NILP (w->contents)) |
1a13852e MR |
3948 | /* It's a no-op to delete an already deleted window. */ |
3949 | return Qnil; | |
3950 | ||
d3d50620 | 3951 | parent = w->parent; |
1a13852e MR |
3952 | if (NILP (parent)) |
3953 | /* Never delete a minibuffer or frame root window. */ | |
3954 | error ("Attempt to delete minibuffer or sole ordinary window"); | |
d3d50620 | 3955 | else if (NILP (w->prev) && NILP (w->next)) |
1a13852e MR |
3956 | /* Rather bow out here, this case should be handled on the Elisp |
3957 | level. */ | |
3958 | error ("Attempt to delete sole window of parent"); | |
3959 | ||
3960 | p = XWINDOW (parent); | |
e74aeda8 | 3961 | horflag = WINDOW_HORIZONTAL_COMBINATION_P (p); |
1a13852e MR |
3962 | |
3963 | frame = WINDOW_FRAME (w); | |
3964 | f = XFRAME (frame); | |
3965 | ||
3966 | root = FRAME_ROOT_WINDOW (f); | |
3967 | r = XWINDOW (root); | |
3968 | ||
3969 | /* Unlink WINDOW from window tree. */ | |
d3d50620 | 3970 | if (NILP (w->prev)) |
1a13852e MR |
3971 | /* Get SIBLING below (on the right of) WINDOW. */ |
3972 | { | |
3973 | /* before_sibling 1 means WINDOW is the first child of its | |
3974 | parent and thus before the sibling. */ | |
3975 | before_sibling = 1; | |
d3d50620 | 3976 | sibling = w->next; |
1a13852e | 3977 | s = XWINDOW (sibling); |
e8c17b81 | 3978 | wset_prev (s, Qnil); |
e74aeda8 | 3979 | wset_combination (p, horflag, sibling); |
1a13852e MR |
3980 | } |
3981 | else | |
3982 | /* Get SIBLING above (on the left of) WINDOW. */ | |
3983 | { | |
d3d50620 | 3984 | sibling = w->prev; |
1a13852e | 3985 | s = XWINDOW (sibling); |
e8c17b81 | 3986 | wset_next (s, w->next); |
d3d50620 | 3987 | if (!NILP (s->next)) |
e8c17b81 | 3988 | wset_prev (XWINDOW (s->next), sibling); |
7ab12479 JB |
3989 | } |
3990 | ||
d615d6d2 | 3991 | if (window_resize_check (r, horflag) |
5f24fa51 DA |
3992 | && (XINT (r->new_total) |
3993 | == (horflag ? r->total_cols : r->total_lines))) | |
562dd5e9 MR |
3994 | /* We can delete WINDOW now. */ |
3995 | { | |
95986d52 | 3996 | |
562dd5e9 | 3997 | /* Block input. */ |
4d7e6e51 | 3998 | block_input (); |
d615d6d2 | 3999 | window_resize_apply (p, horflag); |
0d384044 | 4000 | |
95986d52 CY |
4001 | /* If this window is referred to by the dpyinfo's mouse |
4002 | highlight, invalidate that slot to be safe (Bug#9904). */ | |
4c5501e9 EZ |
4003 | if (!FRAME_INITIAL_P (f)) |
4004 | { | |
4005 | Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f); | |
4006 | ||
4007 | if (EQ (hlinfo->mouse_face_window, window)) | |
4008 | hlinfo->mouse_face_window = Qnil; | |
4009 | } | |
95986d52 | 4010 | |
562dd5e9 MR |
4011 | windows_or_buffers_changed++; |
4012 | Vwindow_list = Qnil; | |
4013 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
0d384044 | 4014 | |
e8c17b81 | 4015 | wset_next (w, Qnil); /* Don't delete w->next too. */ |
562dd5e9 | 4016 | free_window_matrices (w); |
bd99e242 | 4017 | |
e74aeda8 | 4018 | if (WINDOWP (w->contents)) |
0d384044 | 4019 | { |
e74aeda8 DA |
4020 | delete_all_child_windows (w->contents); |
4021 | wset_combination (w, 0, Qnil); | |
0d384044 | 4022 | } |
e74aeda8 | 4023 | else |
bd99e242 | 4024 | { |
562dd5e9 | 4025 | unshow_buffer (w); |
d3d50620 DA |
4026 | unchain_marker (XMARKER (w->pointm)); |
4027 | unchain_marker (XMARKER (w->start)); | |
e8c17b81 | 4028 | wset_buffer (w, Qnil); |
bd99e242 RS |
4029 | } |
4030 | ||
d3d50620 | 4031 | if (NILP (s->prev) && NILP (s->next)) |
562dd5e9 MR |
4032 | /* A matrjoshka where SIBLING has become the only child of |
4033 | PARENT. */ | |
c32de52a | 4034 | { |
562dd5e9 MR |
4035 | /* Put SIBLING into PARENT's place. */ |
4036 | replace_window (parent, sibling, 0); | |
4037 | /* Have SIBLING inherit the following three slot values from | |
b6f67890 | 4038 | PARENT (the combination_limit slot is not inherited). */ |
e8c17b81 PE |
4039 | wset_normal_cols (s, p->normal_cols); |
4040 | wset_normal_lines (s, p->normal_lines); | |
562dd5e9 | 4041 | /* Mark PARENT as deleted. */ |
e74aeda8 | 4042 | wset_combination (p, 0, Qnil); |
562dd5e9 MR |
4043 | /* Try to merge SIBLING into its new parent. */ |
4044 | recombine_windows (sibling); | |
c32de52a RS |
4045 | } |
4046 | ||
bd0443bb | 4047 | adjust_frame_glyphs (f); |
562dd5e9 MR |
4048 | |
4049 | if (!WINDOW_LIVE_P (FRAME_SELECTED_WINDOW (f))) | |
4050 | /* We deleted the frame's selected window. */ | |
0d384044 | 4051 | { |
562dd5e9 MR |
4052 | /* Use the frame's first window as fallback ... */ |
4053 | Lisp_Object new_selected_window = Fframe_first_window (frame); | |
4054 | /* ... but preferably use its most recently used window. */ | |
4055 | Lisp_Object mru_window; | |
0d384044 | 4056 | |
562dd5e9 MR |
4057 | /* `get-mru-window' might fail for some reason so play it safe |
4058 | - promote the first window _without recording it_ first. */ | |
4059 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
4060 | Fselect_window (new_selected_window, Qt); | |
4061 | else | |
f00af5b1 | 4062 | fset_selected_window (f, new_selected_window); |
0d384044 | 4063 | |
4d7e6e51 | 4064 | unblock_input (); |
0d384044 | 4065 | |
562dd5e9 MR |
4066 | /* Now look whether `get-mru-window' gets us something. */ |
4067 | mru_window = call1 (Qget_mru_window, frame); | |
4068 | if (WINDOW_LIVE_P (mru_window) | |
d3d50620 | 4069 | && EQ (XWINDOW (mru_window)->frame, frame)) |
562dd5e9 | 4070 | new_selected_window = mru_window; |
bd99e242 | 4071 | |
562dd5e9 MR |
4072 | /* If all ended up well, we now promote the mru window. */ |
4073 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
4074 | Fselect_window (new_selected_window, Qnil); | |
4075 | else | |
f00af5b1 | 4076 | fset_selected_window (f, new_selected_window); |
0d384044 RS |
4077 | } |
4078 | else | |
4d7e6e51 | 4079 | unblock_input (); |
0d384044 | 4080 | |
562dd5e9 MR |
4081 | /* Must be run by the caller: |
4082 | run_window_configuration_change_hook (f); */ | |
0d384044 | 4083 | } |
562dd5e9 MR |
4084 | else |
4085 | /* We failed: Relink WINDOW into window tree. */ | |
0d384044 | 4086 | { |
562dd5e9 MR |
4087 | if (before_sibling) |
4088 | { | |
e8c17b81 | 4089 | wset_prev (s, window); |
e74aeda8 | 4090 | wset_combination (p, horflag, window); |
562dd5e9 MR |
4091 | } |
4092 | else | |
4093 | { | |
e8c17b81 | 4094 | wset_next (s, window); |
d3d50620 | 4095 | if (!NILP (w->next)) |
e8c17b81 | 4096 | wset_prev (XWINDOW (w->next), window); |
562dd5e9 MR |
4097 | } |
4098 | error ("Deletion failed"); | |
0d384044 RS |
4099 | } |
4100 | ||
0d384044 RS |
4101 | return Qnil; |
4102 | } | |
f984d4fc GM |
4103 | \f |
4104 | /*********************************************************************** | |
4105 | Resizing Mini-Windows | |
4106 | ***********************************************************************/ | |
4107 | ||
562dd5e9 MR |
4108 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we |
4109 | can. */ | |
4110 | void | |
4111 | grow_mini_window (struct window *w, int delta) | |
f984d4fc | 4112 | { |
d3d50620 | 4113 | struct frame *f = XFRAME (w->frame); |
562dd5e9 MR |
4114 | struct window *r; |
4115 | Lisp_Object root, value; | |
f984d4fc | 4116 | |
a54e2c05 DA |
4117 | eassert (MINI_WINDOW_P (w)); |
4118 | eassert (delta >= 0); | |
f984d4fc | 4119 | |
562dd5e9 MR |
4120 | root = FRAME_ROOT_WINDOW (f); |
4121 | r = XWINDOW (root); | |
5386012d MR |
4122 | value = call2 (Qwindow_resize_root_window_vertically, |
4123 | root, make_number (- delta)); | |
d615d6d2 | 4124 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4125 | { |
4d7e6e51 | 4126 | block_input (); |
d615d6d2 | 4127 | window_resize_apply (r, 0); |
f984d4fc | 4128 | |
562dd5e9 | 4129 | /* Grow the mini-window. */ |
5f24fa51 DA |
4130 | w->top_line = r->top_line + r->total_lines; |
4131 | w->total_lines -= XINT (value); | |
628fdc56 | 4132 | /* Enforce full redisplay. FIXME: make it more selective. */ |
dca778d5 | 4133 | windows_or_buffers_changed++; |
bd0443bb | 4134 | adjust_frame_glyphs (f); |
4d7e6e51 | 4135 | unblock_input (); |
f984d4fc GM |
4136 | } |
4137 | } | |
4138 | ||
4139 | ||
562dd5e9 MR |
4140 | /* Shrink mini-window W. */ |
4141 | void | |
4142 | shrink_mini_window (struct window *w) | |
f984d4fc | 4143 | { |
d3d50620 | 4144 | struct frame *f = XFRAME (w->frame); |
562dd5e9 MR |
4145 | struct window *r; |
4146 | Lisp_Object root, value; | |
4147 | EMACS_INT size; | |
43b4a21f | 4148 | |
a54e2c05 | 4149 | eassert (MINI_WINDOW_P (w)); |
177c0ea7 | 4150 | |
5f24fa51 | 4151 | size = w->total_lines; |
562dd5e9 MR |
4152 | if (size > 1) |
4153 | { | |
4154 | root = FRAME_ROOT_WINDOW (f); | |
4155 | r = XWINDOW (root); | |
5386012d | 4156 | value = call2 (Qwindow_resize_root_window_vertically, |
562dd5e9 | 4157 | root, make_number (size - 1)); |
d615d6d2 | 4158 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4159 | { |
4d7e6e51 | 4160 | block_input (); |
d615d6d2 | 4161 | window_resize_apply (r, 0); |
43b4a21f | 4162 | |
562dd5e9 | 4163 | /* Shrink the mini-window. */ |
5f24fa51 DA |
4164 | w->top_line = r->top_line + r->total_lines; |
4165 | w->total_lines = 1; | |
628fdc56 | 4166 | /* Enforce full redisplay. FIXME: make it more selective. */ |
dca778d5 | 4167 | windows_or_buffers_changed++; |
bd0443bb | 4168 | adjust_frame_glyphs (f); |
4d7e6e51 | 4169 | unblock_input (); |
f984d4fc | 4170 | } |
562dd5e9 MR |
4171 | /* If the above failed for whatever strange reason we must make a |
4172 | one window frame here. The same routine will be needed when | |
4173 | shrinking the frame (and probably when making the initial | |
4174 | *scratch* window). For the moment leave things as they are. */ | |
f984d4fc GM |
4175 | } |
4176 | } | |
4177 | ||
562dd5e9 MR |
4178 | DEFUN ("resize-mini-window-internal", Fresize_mini_window_internal, Sresize_mini_window_internal, 1, 1, 0, |
4179 | doc: /* Resize minibuffer window WINDOW. */) | |
4180 | (Lisp_Object window) | |
f984d4fc | 4181 | { |
562dd5e9 MR |
4182 | struct window *w = XWINDOW (window); |
4183 | struct window *r; | |
4184 | struct frame *f; | |
4185 | int height; | |
177c0ea7 | 4186 | |
562dd5e9 | 4187 | CHECK_WINDOW (window); |
d3d50620 | 4188 | f = XFRAME (w->frame); |
177c0ea7 | 4189 | |
d3d50620 | 4190 | if (!EQ (FRAME_MINIBUF_WINDOW (XFRAME (w->frame)), window)) |
562dd5e9 MR |
4191 | error ("Not a valid minibuffer window"); |
4192 | else if (FRAME_MINIBUF_ONLY_P (f)) | |
4193 | error ("Cannot resize a minibuffer-only frame"); | |
177c0ea7 | 4194 | |
562dd5e9 | 4195 | r = XWINDOW (FRAME_ROOT_WINDOW (f)); |
5f24fa51 | 4196 | height = r->total_lines + w->total_lines; |
d615d6d2 | 4197 | if (window_resize_check (r, 0) |
d3d50620 DA |
4198 | && XINT (w->new_total) > 0 |
4199 | && height == XINT (r->new_total) + XINT (w->new_total)) | |
f984d4fc | 4200 | { |
4d7e6e51 | 4201 | block_input (); |
d615d6d2 | 4202 | window_resize_apply (r, 0); |
f984d4fc | 4203 | |
5f24fa51 DA |
4204 | w->total_lines = XFASTINT (w->new_total); |
4205 | w->top_line = r->top_line + r->total_lines; | |
177c0ea7 | 4206 | |
562dd5e9 MR |
4207 | windows_or_buffers_changed++; |
4208 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
bd0443bb | 4209 | adjust_frame_glyphs (f); |
4d7e6e51 | 4210 | unblock_input (); |
f984d4fc | 4211 | |
562dd5e9 MR |
4212 | run_window_configuration_change_hook (f); |
4213 | return Qt; | |
86c8e823 | 4214 | } |
562dd5e9 | 4215 | else error ("Failed to resize minibuffer window"); |
f984d4fc | 4216 | } |
562dd5e9 | 4217 | \f |
5500c422 GM |
4218 | /* Mark window cursors off for all windows in the window tree rooted |
4219 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4220 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4221 | the frame are cleared. */ | |
4222 | ||
4223 | void | |
971de7fb | 4224 | mark_window_cursors_off (struct window *w) |
5500c422 GM |
4225 | { |
4226 | while (w) | |
4227 | { | |
e74aeda8 DA |
4228 | if (WINDOWP (w->contents)) |
4229 | mark_window_cursors_off (XWINDOW (w->contents)); | |
5500c422 GM |
4230 | else |
4231 | w->phys_cursor_on_p = 0; | |
4232 | ||
d3d50620 | 4233 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
5500c422 GM |
4234 | } |
4235 | } | |
4236 | ||
4237 | ||
e9c195b1 | 4238 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4239 | |
4240 | int | |
971de7fb | 4241 | window_internal_height (struct window *w) |
7ab12479 | 4242 | { |
5f24fa51 | 4243 | int ht = w->total_lines; |
7ab12479 | 4244 | |
e9c195b1 GM |
4245 | if (!MINI_WINDOW_P (w)) |
4246 | { | |
d3d50620 | 4247 | if (!NILP (w->parent) |
e74aeda8 | 4248 | || WINDOWP (w->contents) |
d3d50620 DA |
4249 | || !NILP (w->next) |
4250 | || !NILP (w->prev) | |
e9c195b1 GM |
4251 | || WINDOW_WANTS_MODELINE_P (w)) |
4252 | --ht; | |
7ab12479 | 4253 | |
e9c195b1 GM |
4254 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4255 | --ht; | |
4256 | } | |
7ab12479 JB |
4257 | |
4258 | return ht; | |
4259 | } | |
5500c422 GM |
4260 | \f |
4261 | /************************************************************************ | |
4262 | Window Scrolling | |
4263 | ***********************************************************************/ | |
535e0b8e | 4264 | |
5500c422 | 4265 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4266 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4267 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4268 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4269 | means don't signal an error if we try to move over BEGV or ZV, | |
4270 | respectively. */ | |
7ab12479 | 4271 | |
101d1605 | 4272 | static void |
56b5d5b1 | 4273 | window_scroll (Lisp_Object window, EMACS_INT n, bool whole, int noerror) |
5500c422 | 4274 | { |
cba59f77 | 4275 | immediate_quit = 1; |
d311d28c | 4276 | n = clip_to_bounds (INT_MIN, n, INT_MAX); |
cba59f77 | 4277 | |
5500c422 GM |
4278 | /* If we must, use the pixel-based version which is much slower than |
4279 | the line-based one but can handle varying line heights. */ | |
d3d50620 | 4280 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) |
5500c422 GM |
4281 | window_scroll_pixel_based (window, n, whole, noerror); |
4282 | else | |
4283 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4284 | |
4285 | immediate_quit = 0; | |
5500c422 GM |
4286 | } |
4287 | ||
4288 | ||
4289 | /* Implementation of window_scroll that works based on pixel line | |
4290 | heights. See the comment of window_scroll for parameter | |
4291 | descriptions. */ | |
4292 | ||
4293 | static void | |
56b5d5b1 | 4294 | window_scroll_pixel_based (Lisp_Object window, int n, bool whole, int noerror) |
5500c422 GM |
4295 | { |
4296 | struct it it; | |
4297 | struct window *w = XWINDOW (window); | |
4298 | struct text_pos start; | |
5500c422 | 4299 | int this_scroll_margin; |
9d14503e | 4300 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5cdb3cf3 | 4301 | int vscrolled = 0; |
5a857365 | 4302 | int x, y, rtop, rbot, rowh, vpos; |
57b3e30b | 4303 | void *itdata = NULL; |
fdda0220 EZ |
4304 | int window_total_lines; |
4305 | int frame_line_height = default_line_pixel_height (w); | |
5500c422 | 4306 | |
d3d50620 | 4307 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
f0ee99a0 EZ |
4308 | /* Scrolling a minibuffer window via scroll bar when the echo area |
4309 | shows long text sometimes resets the minibuffer contents behind | |
4310 | our backs. */ | |
4311 | if (CHARPOS (start) > ZV) | |
4312 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
177c0ea7 | 4313 | |
5500c422 | 4314 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4315 | the screen. Allow PT to be partially visible, otherwise |
4316 | something like (scroll-down 1) with PT in the line before | |
4317 | the partially visible one would recenter. */ | |
5a857365 KS |
4318 | |
4319 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 | 4320 | { |
57b3e30b | 4321 | itdata = bidi_shelve_cache (); |
5500c422 GM |
4322 | /* Move backward half the height of the window. Performance note: |
4323 | vmotion used here is about 10% faster, but would give wrong | |
4324 | results for variable height lines. */ | |
4325 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4326 | it.current_y = it.last_visible_y; | |
f204989e | 4327 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4328 | |
5500c422 GM |
4329 | /* The function move_iterator_vertically may move over more than |
4330 | the specified y-distance. If it->w is small, e.g. a | |
4331 | mini-buffer window, we may end up in front of the window's | |
4332 | display area. This is the case when Start displaying at the | |
4333 | start of the line containing PT in this case. */ | |
4334 | if (it.current_y <= 0) | |
4335 | { | |
4336 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4337 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4338 | it.current_y = 0; |
4339 | } | |
4340 | ||
4341 | start = it.current.pos; | |
35928349 | 4342 | bidi_unshelve_cache (itdata, 0); |
5500c422 | 4343 | } |
e56263e5 KS |
4344 | else if (auto_window_vscroll_p) |
4345 | { | |
5a857365 | 4346 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
4347 | { |
4348 | int px; | |
fdda0220 | 4349 | int dy = frame_line_height; |
e56263e5 | 4350 | if (whole) |
e856c216 KS |
4351 | dy = max ((window_box_height (w) |
4352 | - next_screen_context_lines * dy), | |
4353 | dy); | |
e56263e5 KS |
4354 | dy *= n; |
4355 | ||
5a857365 | 4356 | if (n < 0) |
e56263e5 | 4357 | { |
5a857365 KS |
4358 | /* Only vscroll backwards if already vscrolled forwards. */ |
4359 | if (w->vscroll < 0 && rtop > 0) | |
4360 | { | |
4361 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
4362 | Fset_window_vscroll (window, make_number (px), Qt); | |
4363 | return; | |
4364 | } | |
e56263e5 | 4365 | } |
5a857365 | 4366 | if (n > 0) |
e56263e5 | 4367 | { |
5a857365 KS |
4368 | /* Do vscroll if already vscrolled or only display line. */ |
4369 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
4370 | { | |
4371 | px = max (0, -w->vscroll + min (rbot, dy)); | |
4372 | Fset_window_vscroll (window, make_number (px), Qt); | |
4373 | return; | |
4374 | } | |
4375 | ||
4376 | /* Maybe modify window start instead of scrolling. */ | |
4377 | if (rbot > 0 || w->vscroll < 0) | |
4378 | { | |
d311d28c | 4379 | ptrdiff_t spos; |
5a857365 KS |
4380 | |
4381 | Fset_window_vscroll (window, make_number (0), Qt); | |
4382 | /* If there are other text lines above the current row, | |
4383 | move window start to current row. Else to next row. */ | |
4384 | if (rbot > 0) | |
4385 | spos = XINT (Fline_beginning_position (Qnil)); | |
4386 | else | |
4387 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
d3d50620 | 4388 | set_marker_restricted (w->start, make_number (spos), |
e74aeda8 | 4389 | w->contents); |
c98ff5dd DA |
4390 | w->start_at_line_beg = 1; |
4391 | w->update_mode_line = 1; | |
5a857365 KS |
4392 | /* Set force_start so that redisplay_window will run the |
4393 | window-scroll-functions. */ | |
c98ff5dd | 4394 | w->force_start = 1; |
5a857365 KS |
4395 | return; |
4396 | } | |
e56263e5 KS |
4397 | } |
4398 | } | |
5a857365 | 4399 | /* Cancel previous vscroll. */ |
e56263e5 KS |
4400 | Fset_window_vscroll (window, make_number (0), Qt); |
4401 | } | |
5500c422 | 4402 | |
57b3e30b | 4403 | itdata = bidi_shelve_cache (); |
d0c38d63 | 4404 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
4405 | point in the same window line as it is now, so get that line. */ |
4406 | if (!NILP (Vscroll_preserve_screen_position)) | |
4407 | { | |
c525d842 | 4408 | /* We preserve the goal pixel coordinate across consecutive |
a4b000fb JL |
4409 | calls to scroll-up, scroll-down and other commands that |
4410 | have the `scroll-command' property. This avoids the | |
c525d842 CY |
4411 | possibility of point becoming "stuck" on a tall line when |
4412 | scrolling by one line. */ | |
66fe93d1 | 4413 | if (window_scroll_pixel_based_preserve_y < 0 |
1344aad4 TT |
4414 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4415 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c525d842 CY |
4416 | { |
4417 | start_display (&it, w, start); | |
4418 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 4419 | window_scroll_pixel_based_preserve_y = it.current_y; |
c876b227 | 4420 | window_scroll_pixel_based_preserve_x = it.current_x; |
c525d842 | 4421 | } |
5500c422 GM |
4422 | } |
4423 | else | |
c876b227 SM |
4424 | window_scroll_pixel_based_preserve_y |
4425 | = window_scroll_pixel_based_preserve_x = -1; | |
5500c422 GM |
4426 | |
4427 | /* Move iterator it from start the specified distance forward or | |
4428 | backward. The result is the new window start. */ | |
4429 | start_display (&it, w, start); | |
4430 | if (whole) | |
4431 | { | |
d311d28c | 4432 | ptrdiff_t start_pos = IT_CHARPOS (it); |
fdda0220 | 4433 | int dy = frame_line_height; |
e856c216 KS |
4434 | dy = max ((window_box_height (w) |
4435 | - next_screen_context_lines * dy), | |
4436 | dy) * n; | |
d72340d4 GM |
4437 | |
4438 | /* Note that move_it_vertically always moves the iterator to the | |
4439 | start of a line. So, if the last line doesn't have a newline, | |
4440 | we would end up at the start of the line ending at ZV. */ | |
4441 | if (dy <= 0) | |
e856c216 KS |
4442 | { |
4443 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 4444 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
4445 | looking at an image that is taller that the window height. */ |
4446 | while (start_pos == IT_CHARPOS (it) | |
4447 | && start_pos > BEGV) | |
e4cc2dfc | 4448 | move_it_by_lines (&it, -1); |
e856c216 | 4449 | } |
d72340d4 | 4450 | else if (dy > 0) |
bed83ee4 | 4451 | { |
bed83ee4 KS |
4452 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
4453 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 4454 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
4455 | looking at an image that is taller that the window height. */ |
4456 | while (start_pos == IT_CHARPOS (it) | |
4457 | && start_pos < ZV) | |
e4cc2dfc | 4458 | move_it_by_lines (&it, 1); |
bed83ee4 | 4459 | } |
5500c422 GM |
4460 | } |
4461 | else | |
e4cc2dfc | 4462 | move_it_by_lines (&it, n); |
5500c422 | 4463 | |
96ae58c8 RS |
4464 | /* We failed if we find ZV is already on the screen (scrolling up, |
4465 | means there's nothing past the end), or if we can't start any | |
4466 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 4467 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 4468 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 4469 | { |
5cdb3cf3 MB |
4470 | if (IT_CHARPOS (it) == ZV) |
4471 | { | |
07ce8b53 RS |
4472 | if (it.current_y < it.last_visible_y |
4473 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 4474 | > it.last_visible_y)) |
a74eca50 GM |
4475 | { |
4476 | /* The last line was only partially visible, make it fully | |
4477 | visible. */ | |
4478 | w->vscroll = (it.last_visible_y | |
4479 | - it.current_y + it.max_ascent + it.max_descent); | |
bd0443bb | 4480 | adjust_frame_glyphs (it.f); |
a74eca50 | 4481 | } |
5cdb3cf3 | 4482 | else |
57b3e30b | 4483 | { |
35928349 | 4484 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
4485 | if (noerror) |
4486 | return; | |
4487 | else if (n < 0) /* could happen with empty buffers */ | |
4488 | xsignal0 (Qbeginning_of_buffer); | |
4489 | else | |
4490 | xsignal0 (Qend_of_buffer); | |
4491 | } | |
5cdb3cf3 | 4492 | } |
5500c422 | 4493 | else |
5cdb3cf3 MB |
4494 | { |
4495 | if (w->vscroll != 0) | |
4496 | /* The first line was only partially visible, make it fully | |
4497 | visible. */ | |
4498 | w->vscroll = 0; | |
5cdb3cf3 | 4499 | else |
57b3e30b | 4500 | { |
35928349 | 4501 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
4502 | if (noerror) |
4503 | return; | |
4504 | else | |
4505 | xsignal0 (Qbeginning_of_buffer); | |
4506 | } | |
5cdb3cf3 MB |
4507 | } |
4508 | ||
4509 | /* If control gets here, then we vscrolled. */ | |
4510 | ||
e74aeda8 | 4511 | XBUFFER (w->contents)->prevent_redisplay_optimizations_p = 1; |
5cdb3cf3 MB |
4512 | |
4513 | /* Don't try to change the window start below. */ | |
4514 | vscrolled = 1; | |
5500c422 GM |
4515 | } |
4516 | ||
5cdb3cf3 MB |
4517 | if (! vscrolled) |
4518 | { | |
d311d28c PE |
4519 | ptrdiff_t pos = IT_CHARPOS (it); |
4520 | ptrdiff_t bytepos; | |
e68def1e AS |
4521 | |
4522 | /* If in the middle of a multi-glyph character move forward to | |
4523 | the next character. */ | |
4524 | if (in_display_vector_p (&it)) | |
4525 | { | |
4526 | ++pos; | |
4527 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
4528 | } | |
4529 | ||
5cdb3cf3 | 4530 | /* Set the window start, and set up the window for redisplay. */ |
e74aeda8 | 4531 | set_marker_restricted_both (w->start, w->contents, IT_CHARPOS (it), |
f74de345 | 4532 | IT_BYTEPOS (it)); |
4c1acb95 | 4533 | bytepos = marker_byte_position (w->start); |
c98ff5dd DA |
4534 | w->start_at_line_beg = (pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n'); |
4535 | w->update_mode_line = 1; | |
5cdb3cf3 MB |
4536 | /* Set force_start so that redisplay_window will run the |
4537 | window-scroll-functions. */ | |
c98ff5dd | 4538 | w->force_start = 1; |
5cdb3cf3 | 4539 | } |
177c0ea7 | 4540 | |
dc297565 RS |
4541 | /* The rest of this function uses current_y in a nonstandard way, |
4542 | not including the height of the header line if any. */ | |
5500c422 | 4543 | it.current_y = it.vpos = 0; |
177c0ea7 | 4544 | |
940f53e5 RS |
4545 | /* Move PT out of scroll margins. |
4546 | This code wants current_y to be zero at the window start position | |
4547 | even if there is a header line. */ | |
fdda0220 EZ |
4548 | window_total_lines |
4549 | = w->total_lines * WINDOW_FRAME_LINE_HEIGHT (w) / frame_line_height; | |
940f53e5 | 4550 | this_scroll_margin = max (0, scroll_margin); |
3a45383a | 4551 | this_scroll_margin |
fdda0220 EZ |
4552 | = min (this_scroll_margin, window_total_lines / 4); |
4553 | this_scroll_margin *= frame_line_height; | |
940f53e5 RS |
4554 | |
4555 | if (n > 0) | |
5500c422 | 4556 | { |
940f53e5 RS |
4557 | /* We moved the window start towards ZV, so PT may be now |
4558 | in the scroll margin at the top. */ | |
4559 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
4560 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
4561 | && (NILP (Vscroll_preserve_screen_position) | |
4562 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4563 | /* We found PT at a legitimate height. Leave it alone. */ |
4564 | ; | |
66fe93d1 | 4565 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4566 | { |
fa3c3426 RS |
4567 | /* If we have a header line, take account of it. |
4568 | This is necessary because we set it.current_y to 0, above. */ | |
c876b227 SM |
4569 | move_it_to (&it, -1, |
4570 | window_scroll_pixel_based_preserve_x, | |
66fe93d1 LT |
4571 | window_scroll_pixel_based_preserve_y |
4572 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c876b227 | 4573 | -1, MOVE_TO_Y | MOVE_TO_X); |
940f53e5 RS |
4574 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4575 | } | |
4576 | else | |
5500c422 | 4577 | { |
5500c422 | 4578 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
4579 | { |
4580 | int prev = it.current_y; | |
e4cc2dfc | 4581 | move_it_by_lines (&it, 1); |
e9b2c961 RS |
4582 | if (prev == it.current_y) |
4583 | break; | |
4584 | } | |
5500c422 GM |
4585 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4586 | } | |
940f53e5 RS |
4587 | } |
4588 | else if (n < 0) | |
4589 | { | |
d311d28c | 4590 | ptrdiff_t charpos, bytepos; |
aed328bf | 4591 | int partial_p; |
940f53e5 | 4592 | |
66fe93d1 LT |
4593 | /* Save our position, for the |
4594 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
4595 | charpos = IT_CHARPOS (it); |
4596 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 4597 | |
940f53e5 RS |
4598 | /* We moved the window start towards BEGV, so PT may be now |
4599 | in the scroll margin at the bottom. */ | |
4600 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
4601 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
4602 | - this_scroll_margin - 1), | |
4603 | -1, | |
940f53e5 RS |
4604 | MOVE_TO_POS | MOVE_TO_Y); |
4605 | ||
aed328bf KS |
4606 | /* Save our position, in case it's correct. */ |
4607 | charpos = IT_CHARPOS (it); | |
4608 | bytepos = IT_BYTEPOS (it); | |
4609 | ||
4610 | /* See if point is on a partially visible line at the end. */ | |
4611 | if (it.what == IT_EOB) | |
4612 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
4613 | else | |
4614 | { | |
e4cc2dfc | 4615 | move_it_by_lines (&it, 1); |
aed328bf KS |
4616 | partial_p = it.current_y > it.last_visible_y; |
4617 | } | |
4618 | ||
bdf4ec93 RS |
4619 | if (charpos == PT && !partial_p |
4620 | && (NILP (Vscroll_preserve_screen_position) | |
4621 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4622 | /* We found PT before we found the display margin, so PT is ok. */ |
4623 | ; | |
66fe93d1 | 4624 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4625 | { |
d3d50620 | 4626 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
940f53e5 | 4627 | start_display (&it, w, start); |
c525d842 CY |
4628 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
4629 | here because we called start_display again and did not | |
4630 | alter it.current_y this time. */ | |
c876b227 SM |
4631 | move_it_to (&it, -1, window_scroll_pixel_based_preserve_x, |
4632 | window_scroll_pixel_based_preserve_y, -1, | |
4633 | MOVE_TO_Y | MOVE_TO_X); | |
940f53e5 RS |
4634 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4635 | } | |
4636 | else | |
4637 | { | |
aed328bf | 4638 | if (partial_p) |
5cdb3cf3 MB |
4639 | /* The last line was only partially visible, so back up two |
4640 | lines to make sure we're on a fully visible line. */ | |
4641 | { | |
e4cc2dfc | 4642 | move_it_by_lines (&it, -2); |
5cdb3cf3 MB |
4643 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4644 | } | |
4645 | else | |
4646 | /* No, the position we saved is OK, so use it. */ | |
4647 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
4648 | } |
4649 | } | |
35928349 | 4650 | bidi_unshelve_cache (itdata, 0); |
5500c422 GM |
4651 | } |
4652 | ||
4653 | ||
4654 | /* Implementation of window_scroll that works based on screen lines. | |
4655 | See the comment of window_scroll for parameter descriptions. */ | |
4656 | ||
4657 | static void | |
56b5d5b1 | 4658 | window_scroll_line_based (Lisp_Object window, int n, bool whole, int noerror) |
7ab12479 JB |
4659 | { |
4660 | register struct window *w = XWINDOW (window); | |
03ab8921 EZ |
4661 | /* Fvertical_motion enters redisplay, which can trigger |
4662 | fontification, which in turn can modify buffer text (e.g., if the | |
4663 | fontification functions replace escape sequences with faces, as | |
4664 | in `grep-mode-font-lock-keywords'). So we use a marker to record | |
4665 | the old point position, to prevent crashes in SET_PT_BOTH. */ | |
4666 | Lisp_Object opoint_marker = Fpoint_marker (); | |
d311d28c | 4667 | register ptrdiff_t pos, pos_byte; |
7ab12479 JB |
4668 | register int ht = window_internal_height (w); |
4669 | register Lisp_Object tem; | |
56b5d5b1 | 4670 | bool lose; |
5500c422 | 4671 | Lisp_Object bolp; |
c54aa166 DA |
4672 | ptrdiff_t startpos = marker_position (w->start); |
4673 | ptrdiff_t startbyte = marker_byte_position (w->start); | |
c876b227 | 4674 | Lisp_Object original_pos = Qnil; |
101d1605 | 4675 | |
d4e7cf01 GM |
4676 | /* If scrolling screen-fulls, compute the number of lines to |
4677 | scroll from the window's height. */ | |
4678 | if (whole) | |
4679 | n *= max (1, ht - next_screen_context_lines); | |
4680 | ||
c876b227 SM |
4681 | if (!NILP (Vscroll_preserve_screen_position)) |
4682 | { | |
4683 | if (window_scroll_preserve_vpos <= 0 | |
1344aad4 TT |
4684 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4685 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c876b227 SM |
4686 | { |
4687 | struct position posit | |
c54aa166 DA |
4688 | = *compute_motion (startpos, startbyte, 0, 0, 0, |
4689 | PT, ht, 0, -1, w->hscroll, 0, w); | |
c876b227 | 4690 | window_scroll_preserve_vpos = posit.vpos; |
80b00b08 | 4691 | window_scroll_preserve_hpos = posit.hpos + w->hscroll; |
c876b227 SM |
4692 | } |
4693 | ||
4694 | original_pos = Fcons (make_number (window_scroll_preserve_hpos), | |
4695 | make_number (window_scroll_preserve_vpos)); | |
4696 | } | |
0a1f771a | 4697 | |
d834a2e9 | 4698 | XSETFASTINT (tem, PT); |
6ffdb539 | 4699 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 4700 | |
265a9e55 | 4701 | if (NILP (tem)) |
7ab12479 | 4702 | { |
cd2be1dd | 4703 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 4704 | startpos = PT; |
c54aa166 | 4705 | startbyte = PT_BYTE; |
7ab12479 JB |
4706 | } |
4707 | ||
c54aa166 | 4708 | SET_PT_BOTH (startpos, startbyte); |
5ce7b543 | 4709 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 4710 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 4711 | pos = PT; |
b73ea88e | 4712 | pos_byte = PT_BYTE; |
7ab12479 | 4713 | bolp = Fbolp (); |
03ab8921 EZ |
4714 | SET_PT_BOTH (marker_position (opoint_marker), |
4715 | marker_byte_position (opoint_marker)); | |
7ab12479 JB |
4716 | |
4717 | if (lose) | |
f8026fd8 JB |
4718 | { |
4719 | if (noerror) | |
4720 | return; | |
4721 | else | |
ba96a5cf | 4722 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 4723 | } |
7ab12479 JB |
4724 | |
4725 | if (pos < ZV) | |
7ab12479 | 4726 | { |
0c7da84e | 4727 | /* Don't use a scroll margin that is negative or too large. */ |
71f02bc5 | 4728 | int this_scroll_margin = |
5f24fa51 | 4729 | max (0, min (scroll_margin, w->total_lines / 4)); |
0c7da84e | 4730 | |
e74aeda8 | 4731 | set_marker_restricted_both (w->start, w->contents, pos, pos_byte); |
c98ff5dd DA |
4732 | w->start_at_line_beg = !NILP (bolp); |
4733 | w->update_mode_line = 1; | |
345d45b2 RS |
4734 | /* Set force_start so that redisplay_window will run |
4735 | the window-scroll-functions. */ | |
c98ff5dd | 4736 | w->force_start = 1; |
0c7da84e | 4737 | |
bdf4ec93 RS |
4738 | if (!NILP (Vscroll_preserve_screen_position) |
4739 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 4740 | { |
b73ea88e | 4741 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4742 | Fvertical_motion (original_pos, window); |
0c7da84e | 4743 | } |
101d1605 RS |
4744 | /* If we scrolled forward, put point enough lines down |
4745 | that it is outside the scroll margin. */ | |
4746 | else if (n > 0) | |
0c7da84e | 4747 | { |
101d1605 RS |
4748 | int top_margin; |
4749 | ||
4750 | if (this_scroll_margin > 0) | |
4751 | { | |
b73ea88e | 4752 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4753 | Fvertical_motion (make_number (this_scroll_margin), window); |
4754 | top_margin = PT; | |
4755 | } | |
4756 | else | |
4757 | top_margin = pos; | |
4758 | ||
03ab8921 EZ |
4759 | if (top_margin <= marker_position (opoint_marker)) |
4760 | SET_PT_BOTH (marker_position (opoint_marker), | |
4761 | marker_byte_position (opoint_marker)); | |
5500c422 | 4762 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 4763 | { |
b73ea88e | 4764 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4765 | Fvertical_motion (original_pos, window); |
101d1605 | 4766 | } |
9317a85d | 4767 | else |
335406fc | 4768 | SET_PT (top_margin); |
0c7da84e | 4769 | } |
101d1605 | 4770 | else if (n < 0) |
7ab12479 | 4771 | { |
101d1605 RS |
4772 | int bottom_margin; |
4773 | ||
0c7da84e RS |
4774 | /* If we scrolled backward, put point near the end of the window |
4775 | but not within the scroll margin. */ | |
b73ea88e | 4776 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 4777 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
4778 | if (XFASTINT (tem) == ht - this_scroll_margin) |
4779 | bottom_margin = PT; | |
4780 | else | |
4781 | bottom_margin = PT + 1; | |
4782 | ||
03ab8921 EZ |
4783 | if (bottom_margin > marker_position (opoint_marker)) |
4784 | SET_PT_BOTH (marker_position (opoint_marker), | |
4785 | marker_byte_position (opoint_marker)); | |
7ab12479 | 4786 | else |
101d1605 | 4787 | { |
5500c422 | 4788 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 4789 | { |
b73ea88e | 4790 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4791 | Fvertical_motion (original_pos, window); |
9317a85d RS |
4792 | } |
4793 | else | |
4794 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 4795 | } |
7ab12479 JB |
4796 | } |
4797 | } | |
4798 | else | |
f8026fd8 JB |
4799 | { |
4800 | if (noerror) | |
4801 | return; | |
4802 | else | |
ba96a5cf | 4803 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 4804 | } |
7ab12479 | 4805 | } |
5500c422 GM |
4806 | |
4807 | ||
4808 | /* Scroll selected_window up or down. If N is nil, scroll a | |
4809 | screen-full which is defined as the height of the window minus | |
4810 | next_screen_context_lines. If N is the symbol `-', scroll. | |
4811 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
4812 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
4813 | |
4814 | static void | |
971de7fb | 4815 | scroll_command (Lisp_Object n, int direction) |
7ab12479 | 4816 | { |
d311d28c | 4817 | ptrdiff_t count = SPECPDL_INDEX (); |
7ab12479 | 4818 | |
a54e2c05 | 4819 | eassert (eabs (direction) == 1); |
5500c422 GM |
4820 | |
4821 | /* If selected window's buffer isn't current, make it current for | |
4822 | the moment. But don't screw up if window_scroll gets an error. */ | |
e74aeda8 | 4823 | if (XBUFFER (XWINDOW (selected_window)->contents) != current_buffer) |
95605e15 JB |
4824 | { |
4825 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
e74aeda8 | 4826 | Fset_buffer (XWINDOW (selected_window)->contents); |
5500c422 GM |
4827 | |
4828 | /* Make redisplay consider other windows than just selected_window. */ | |
4829 | ++windows_or_buffers_changed; | |
95605e15 | 4830 | } |
7ab12479 | 4831 | |
265a9e55 | 4832 | if (NILP (n)) |
d4e7cf01 | 4833 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 4834 | else if (EQ (n, Qminus)) |
d4e7cf01 | 4835 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
4836 | else |
4837 | { | |
4838 | n = Fprefix_numeric_value (n); | |
101d1605 | 4839 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 4840 | } |
95605e15 JB |
4841 | |
4842 | unbind_to (count, Qnil); | |
7ab12479 JB |
4843 | } |
4844 | ||
e0965597 | 4845 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
12bb3111 | 4846 | doc: /* Scroll text of selected window upward ARG lines. |
a0a37a6f | 4847 | If ARG is omitted or nil, scroll upward by a near full screen. |
fdb82f93 PJ |
4848 | A near full screen is `next-screen-context-lines' less than a full screen. |
4849 | Negative ARG means scroll downward. | |
4850 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4851 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4852 | (Lisp_Object arg) |
7ab12479 | 4853 | { |
413430c5 | 4854 | scroll_command (arg, 1); |
7ab12479 JB |
4855 | return Qnil; |
4856 | } | |
4857 | ||
e0965597 | 4858 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
12bb3111 | 4859 | doc: /* Scroll text of selected window down ARG lines. |
a0a37a6f | 4860 | If ARG is omitted or nil, scroll down by a near full screen. |
fdb82f93 PJ |
4861 | A near full screen is `next-screen-context-lines' less than a full screen. |
4862 | Negative ARG means scroll upward. | |
4863 | If ARG is the atom `-', scroll upward by nearly full screen. | |
4864 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4865 | (Lisp_Object arg) |
7ab12479 | 4866 | { |
413430c5 | 4867 | scroll_command (arg, -1); |
7ab12479 JB |
4868 | return Qnil; |
4869 | } | |
ccd0664b RS |
4870 | \f |
4871 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 4872 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 4873 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
4874 | showing that buffer is used. |
4875 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4876 | specifies the window. This takes precedence over | |
4877 | `other-window-scroll-buffer'. */) | |
5842a27b | 4878 | (void) |
7ab12479 | 4879 | { |
ccd0664b | 4880 | Lisp_Object window; |
7ab12479 JB |
4881 | |
4882 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 4883 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
4884 | window = Vminibuf_scroll_window; |
4885 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 4886 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
4887 | { |
4888 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 4889 | if (NILP (window)) |
87478b52 | 4890 | window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
4891 | } |
4892 | else | |
dbc4e1c1 JB |
4893 | { |
4894 | /* Nothing specified; look for a neighboring window on the same | |
4895 | frame. */ | |
4896 | window = Fnext_window (selected_window, Qnil, Qnil); | |
4897 | ||
4898 | if (EQ (window, selected_window)) | |
4899 | /* That didn't get us anywhere; look for a window on another | |
4900 | visible frame. */ | |
4901 | do | |
4902 | window = Fnext_window (window, Qnil, Qt); | |
4903 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
4904 | && ! EQ (window, selected_window)); | |
4905 | } | |
4906 | ||
b7826503 | 4907 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
4908 | |
4909 | if (EQ (window, selected_window)) | |
4910 | error ("There is no other window"); | |
4911 | ||
ccd0664b RS |
4912 | return window; |
4913 | } | |
4914 | ||
4915 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
4916 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
4917 | A near full screen is `next-screen-context-lines' less than a full screen. | |
4918 | The next window is the one below the current one; or the one at the top | |
4919 | if the current one is at the bottom. Negative ARG means scroll downward. | |
4920 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4921 | When calling from a program, supply as argument a number, nil, or `-'. | |
4922 | ||
fdb82f93 | 4923 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
4924 | showing that buffer, popping the buffer up if necessary. |
4925 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4926 | specifies the window to scroll. This takes precedence over | |
4927 | `other-window-scroll-buffer'. */) | |
5842a27b | 4928 | (Lisp_Object arg) |
ccd0664b | 4929 | { |
d4e7cf01 GM |
4930 | Lisp_Object window; |
4931 | struct window *w; | |
d311d28c | 4932 | ptrdiff_t count = SPECPDL_INDEX (); |
ccd0664b RS |
4933 | |
4934 | window = Fother_window_for_scrolling (); | |
7ab12479 | 4935 | w = XWINDOW (window); |
7ab12479 JB |
4936 | |
4937 | /* Don't screw up if window_scroll gets an error. */ | |
4938 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 4939 | ++windows_or_buffers_changed; |
7ab12479 | 4940 | |
e74aeda8 | 4941 | Fset_buffer (w->contents); |
ffcd945e | 4942 | SET_PT_BOTH (marker_position (w->pointm), marker_byte_position (w->pointm)); |
7ab12479 | 4943 | |
413430c5 | 4944 | if (NILP (arg)) |
d4e7cf01 | 4945 | window_scroll (window, 1, 1, 1); |
413430c5 | 4946 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 4947 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
4948 | else |
4949 | { | |
413430c5 | 4950 | if (CONSP (arg)) |
7d7bbefd | 4951 | arg = XCAR (arg); |
b7826503 | 4952 | CHECK_NUMBER (arg); |
101d1605 | 4953 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
4954 | } |
4955 | ||
d3d50620 | 4956 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 4957 | unbind_to (count, Qnil); |
7ab12479 JB |
4958 | |
4959 | return Qnil; | |
4960 | } | |
4961 | \f | |
e0965597 | 4962 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 4963 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
4964 | Default for ARG is window width minus 2. |
4965 | Value is the total amount of leftward horizontal scrolling in | |
4966 | effect after the change. | |
23fe745a | 4967 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 4968 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 4969 | will not scroll a window to a column less than the value returned |
dc297565 | 4970 | by this function. This happens in an interactive call. */) |
5842a27b | 4971 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 4972 | { |
c67fa410 | 4973 | struct window *w = XWINDOW (selected_window); |
aa754e6a PE |
4974 | EMACS_INT requested_arg = (NILP (arg) |
4975 | ? window_body_cols (w) - 2 | |
4976 | : XINT (Fprefix_numeric_value (arg))); | |
24a212eb | 4977 | Lisp_Object result = set_window_hscroll (w, w->hscroll + requested_arg); |
c67fa410 | 4978 | |
dc297565 | 4979 | if (!NILP (set_minimum)) |
c67fa410 GM |
4980 | w->min_hscroll = w->hscroll; |
4981 | ||
4982 | return result; | |
7ab12479 JB |
4983 | } |
4984 | ||
e0965597 | 4985 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 4986 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
4987 | Default for ARG is window width minus 2. |
4988 | Value is the total amount of leftward horizontal scrolling in | |
4989 | effect after the change. | |
23fe745a | 4990 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 4991 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 4992 | will not scroll a window to a column less than the value returned |
dc297565 | 4993 | by this function. This happens in an interactive call. */) |
5842a27b | 4994 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 4995 | { |
c67fa410 | 4996 | struct window *w = XWINDOW (selected_window); |
aa754e6a PE |
4997 | EMACS_INT requested_arg = (NILP (arg) |
4998 | ? window_body_cols (w) - 2 | |
4999 | : XINT (Fprefix_numeric_value (arg))); | |
24a212eb | 5000 | Lisp_Object result = set_window_hscroll (w, w->hscroll - requested_arg); |
177c0ea7 | 5001 | |
dc297565 | 5002 | if (!NILP (set_minimum)) |
c67fa410 GM |
5003 | w->min_hscroll = w->hscroll; |
5004 | ||
5005 | return result; | |
7ab12479 JB |
5006 | } |
5007 | ||
fa832261 KS |
5008 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5009 | doc: /* Return the window which was selected when entering the minibuffer. | |
12bb3111 | 5010 | Returns nil, if selected window is not a minibuffer window. */) |
5842a27b | 5011 | (void) |
fa832261 KS |
5012 | { |
5013 | if (minibuf_level > 0 | |
5014 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5015 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5016 | return minibuf_selected_window; | |
5017 | ||
5018 | return Qnil; | |
5019 | } | |
5020 | ||
12c8b416 GM |
5021 | /* Value is the number of lines actually displayed in window W, |
5022 | as opposed to its height. */ | |
5023 | ||
5024 | static int | |
971de7fb | 5025 | displayed_window_lines (struct window *w) |
12c8b416 GM |
5026 | { |
5027 | struct it it; | |
5028 | struct text_pos start; | |
5029 | int height = window_box_height (w); | |
5030 | struct buffer *old_buffer; | |
5031 | int bottom_y; | |
57b3e30b | 5032 | void *itdata = NULL; |
12c8b416 | 5033 | |
e74aeda8 | 5034 | if (XBUFFER (w->contents) != current_buffer) |
12c8b416 GM |
5035 | { |
5036 | old_buffer = current_buffer; | |
e74aeda8 | 5037 | set_buffer_internal (XBUFFER (w->contents)); |
12c8b416 GM |
5038 | } |
5039 | else | |
5040 | old_buffer = NULL; | |
5041 | ||
521b203e GM |
5042 | /* In case W->start is out of the accessible range, do something |
5043 | reasonable. This happens in Info mode when Info-scroll-down | |
5044 | calls (recenter -1) while W->start is 1. */ | |
cf91889a | 5045 | CLIP_TEXT_POS_FROM_MARKER (start, w->start); |
521b203e | 5046 | |
57b3e30b | 5047 | itdata = bidi_shelve_cache (); |
12c8b416 GM |
5048 | start_display (&it, w, start); |
5049 | move_it_vertically (&it, height); | |
c8bc6f65 | 5050 | bottom_y = line_bottom_y (&it); |
35928349 | 5051 | bidi_unshelve_cache (itdata, 0); |
12c8b416 | 5052 | |
1de65f51 RS |
5053 | /* rms: On a non-window display, |
5054 | the value of it.vpos at the bottom of the screen | |
5055 | seems to be 1 larger than window_box_height (w). | |
5056 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5057 | when ZV is on the last screen line | |
5058 | moves to the previous screen line instead of the last one. */ | |
d3d50620 | 5059 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) |
1de65f51 RS |
5060 | height++; |
5061 | ||
12c8b416 GM |
5062 | /* Add in empty lines at the bottom of the window. */ |
5063 | if (bottom_y < height) | |
5064 | { | |
949cf20f | 5065 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5066 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5067 | } |
5068 | ||
c8bc6f65 GM |
5069 | if (old_buffer) |
5070 | set_buffer_internal (old_buffer); | |
5071 | ||
12c8b416 GM |
5072 | return it.vpos; |
5073 | } | |
5074 | ||
5075 | ||
a7ca3326 | 5076 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
666e158e | 5077 | doc: /* Center point in selected window and maybe redisplay frame. |
3b166f09 | 5078 | With a numeric prefix argument ARG, recenter putting point on screen line ARG |
12bb3111 | 5079 | relative to the selected window. If ARG is negative, it counts up from the |
fdb82f93 PJ |
5080 | bottom of the window. (ARG should be less than the height of the window.) |
5081 | ||
666e158e MB |
5082 | If ARG is omitted or nil, then recenter with point on the middle line of |
5083 | the selected window; if the variable `recenter-redisplay' is non-nil, | |
5084 | also erase the entire frame and redraw it (when `auto-resize-tool-bars' | |
5085 | is set to `grow-only', this resets the tool-bar's height to the minimum | |
5086 | height needed); if `recenter-redisplay' has the special value `tty', | |
53524d93 | 5087 | then only tty frames are redrawn. |
7d1d98ee | 5088 | |
fdb82f93 PJ |
5089 | Just C-u as prefix means put point in the center of the window |
5090 | and redisplay normally--don't erase and redraw the frame. */) | |
5842a27b | 5091 | (register Lisp_Object arg) |
7ab12479 | 5092 | { |
6df47b59 | 5093 | struct window *w = XWINDOW (selected_window); |
e74aeda8 | 5094 | struct buffer *buf = XBUFFER (w->contents); |
478292ed | 5095 | struct buffer *obuf = current_buffer; |
d7e6881a | 5096 | bool center_p = 0; |
d311d28c | 5097 | ptrdiff_t charpos, bytepos; |
71f02bc5 | 5098 | EMACS_INT iarg IF_LINT (= 0); |
f6b43440 | 5099 | int this_scroll_margin; |
7ab12479 | 5100 | |
0fa5d25b RS |
5101 | /* If redisplay is suppressed due to an error, try again. */ |
5102 | obuf->display_error_modiff = 0; | |
5103 | ||
413430c5 | 5104 | if (NILP (arg)) |
7ab12479 | 5105 | { |
666e158e MB |
5106 | if (!NILP (Vrecenter_redisplay) |
5107 | && (!EQ (Vrecenter_redisplay, Qtty) | |
5108 | || !NILP (Ftty_type (selected_frame)))) | |
5109 | { | |
ebfa62c0 | 5110 | ptrdiff_t i; |
f02d6d5c | 5111 | |
666e158e MB |
5112 | /* Invalidate pixel data calculated for all compositions. */ |
5113 | for (i = 0; i < n_compositions; i++) | |
5114 | composition_table[i]->font = NULL; | |
742516e0 | 5115 | #if defined (HAVE_WINDOW_SYSTEM) && ! defined (USE_GTK) && ! defined (HAVE_NS) |
666e158e | 5116 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
742516e0 | 5117 | #endif |
666e158e MB |
5118 | Fredraw_frame (WINDOW_FRAME (w)); |
5119 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
5120 | } | |
7d1d98ee | 5121 | |
6df47b59 | 5122 | center_p = 1; |
7ab12479 | 5123 | } |
413430c5 | 5124 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5125 | center_p = 1; |
7ab12479 JB |
5126 | else |
5127 | { | |
413430c5 | 5128 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5129 | CHECK_NUMBER (arg); |
ae12ecd7 | 5130 | iarg = XINT (arg); |
7ab12479 JB |
5131 | } |
5132 | ||
478292ed | 5133 | set_buffer_internal (buf); |
7ab12479 | 5134 | |
f6b43440 RS |
5135 | /* Do this after making BUF current |
5136 | in case scroll_margin is buffer-local. */ | |
71f02bc5 | 5137 | this_scroll_margin = |
5f24fa51 | 5138 | max (0, min (scroll_margin, w->total_lines / 4)); |
f6b43440 | 5139 | |
521b203e | 5140 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5141 | have variable-height lines and centering point on the basis of |
5142 | line counts would lead to strange effects. */ | |
d3d50620 | 5143 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5144 | { |
6df47b59 GM |
5145 | if (center_p) |
5146 | { | |
521b203e GM |
5147 | struct it it; |
5148 | struct text_pos pt; | |
57b3e30b | 5149 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5150 | |
521b203e GM |
5151 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5152 | start_display (&it, w, pt); | |
f204989e | 5153 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5154 | charpos = IT_CHARPOS (it); |
5155 | bytepos = IT_BYTEPOS (it); | |
35928349 | 5156 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5157 | } |
f6b43440 | 5158 | else if (iarg < 0) |
6df47b59 | 5159 | { |
521b203e GM |
5160 | struct it it; |
5161 | struct text_pos pt; | |
5895d7b9 | 5162 | ptrdiff_t nlines = min (PTRDIFF_MAX, -iarg); |
f204989e KS |
5163 | int extra_line_spacing; |
5164 | int h = window_box_height (w); | |
57b3e30b | 5165 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5166 | |
f6b43440 RS |
5167 | iarg = - max (-iarg, this_scroll_margin); |
5168 | ||
521b203e GM |
5169 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5170 | start_display (&it, w, pt); | |
f204989e KS |
5171 | |
5172 | /* Be sure we have the exact height of the full line containing PT. */ | |
e4cc2dfc | 5173 | move_it_by_lines (&it, 0); |
521b203e | 5174 | |
d466fa4d | 5175 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5176 | height minus what's displayed in the line containing PT, |
5177 | and the lines below. */ | |
f204989e KS |
5178 | it.current_y = 0; |
5179 | it.vpos = 0; | |
e4cc2dfc | 5180 | move_it_by_lines (&it, nlines); |
d466fa4d | 5181 | |
f204989e KS |
5182 | if (it.vpos == nlines) |
5183 | h -= it.current_y; | |
5184 | else | |
5185 | { | |
5186 | /* Last line has no newline */ | |
5187 | h -= line_bottom_y (&it); | |
5188 | it.vpos++; | |
5189 | } | |
5190 | ||
5191 | /* Don't reserve space for extra line spacing of last line. */ | |
5192 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5193 | |
5194 | /* If we can't move down NLINES lines because we hit | |
5195 | the end of the buffer, count in some empty lines. */ | |
5196 | if (it.vpos < nlines) | |
f204989e KS |
5197 | { |
5198 | nlines -= it.vpos; | |
5199 | extra_line_spacing = it.extra_line_spacing; | |
5200 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5201 | } | |
5202 | if (h <= 0) | |
57b3e30b | 5203 | { |
35928349 | 5204 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
5205 | return Qnil; |
5206 | } | |
201c831a | 5207 | |
f204989e | 5208 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5209 | start_display (&it, w, pt); |
f204989e KS |
5210 | it.current_y = 0; |
5211 | move_it_vertically_backward (&it, h); | |
5212 | ||
5213 | /* If extra line spacing is present, we may move too far | |
5214 | back. This causes the last line to be only partially | |
5215 | visible (which triggers redisplay to recenter that line | |
5216 | in the middle), so move forward. | |
5217 | But ignore extra line spacing on last line, as it is not | |
5218 | considered to be part of the visible height of the line. | |
5219 | */ | |
5220 | h += extra_line_spacing; | |
5221 | while (-it.current_y > h) | |
e4cc2dfc | 5222 | move_it_by_lines (&it, 1); |
f204989e | 5223 | |
521b203e GM |
5224 | charpos = IT_CHARPOS (it); |
5225 | bytepos = IT_BYTEPOS (it); | |
57b3e30b | 5226 | |
35928349 | 5227 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5228 | } |
521b203e GM |
5229 | else |
5230 | { | |
5231 | struct position pos; | |
f6b43440 | 5232 | |
f6b43440 RS |
5233 | iarg = max (iarg, this_scroll_margin); |
5234 | ||
c54aa166 | 5235 | pos = *vmotion (PT, PT_BYTE, -iarg, w); |
521b203e GM |
5236 | charpos = pos.bufpos; |
5237 | bytepos = pos.bytepos; | |
5238 | } | |
5239 | } | |
5240 | else | |
5241 | { | |
5242 | struct position pos; | |
5243 | int ht = window_internal_height (w); | |
5244 | ||
5245 | if (center_p) | |
a4429c5b | 5246 | iarg = ht / 2; |
f567c488 KS |
5247 | else if (iarg < 0) |
5248 | iarg += ht; | |
f6b43440 RS |
5249 | |
5250 | /* Don't let it get into the margin at either top or bottom. */ | |
2dd61a9b DA |
5251 | iarg = clip_to_bounds (this_scroll_margin, iarg, |
5252 | ht - this_scroll_margin - 1); | |
177c0ea7 | 5253 | |
c54aa166 | 5254 | pos = *vmotion (PT, PT_BYTE, - iarg, w); |
6df47b59 GM |
5255 | charpos = pos.bufpos; |
5256 | bytepos = pos.bytepos; | |
5257 | } | |
5258 | ||
5259 | /* Set the new window start. */ | |
e74aeda8 | 5260 | set_marker_both (w->start, w->contents, charpos, bytepos); |
9d93ce29 | 5261 | w->window_end_valid = 0; |
177c0ea7 | 5262 | |
c98ff5dd | 5263 | w->optional_new_start = 1; |
95605b1b | 5264 | |
c98ff5dd DA |
5265 | w->start_at_line_beg = (bytepos == BEGV_BYTE || |
5266 | FETCH_BYTE (bytepos - 1) == '\n'); | |
177c0ea7 | 5267 | |
478292ed | 5268 | set_buffer_internal (obuf); |
7ab12479 JB |
5269 | return Qnil; |
5270 | } | |
b7617575 | 5271 | |
81fe0836 | 5272 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5273 | 0, 1, 0, |
5274 | doc: /* Return the height in lines of the text display area of WINDOW. | |
52162052 | 5275 | WINDOW must be a live window and defaults to the selected one. |
8fef9de1 | 5276 | |
105216ed CY |
5277 | The returned height does not include the mode line, any header line, |
5278 | nor any partial-height lines at the bottom of the text area. */) | |
5842a27b | 5279 | (Lisp_Object window) |
81fe0836 | 5280 | { |
52162052 | 5281 | struct window *w = decode_live_window (window); |
81fe0836 | 5282 | int pixel_height = window_box_height (w); |
d3d50620 | 5283 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5284 | return make_number (line_height); |
5285 | } | |
5286 | ||
5287 | ||
7ab12479 JB |
5288 | \f |
5289 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5290 | 1, 1, "P", |
5291 | doc: /* Position point relative to window. | |
87e68db4 JB |
5292 | ARG nil means position point at center of window. |
5293 | Else, ARG specifies vertical position within the window; | |
fdb82f93 | 5294 | zero means top of window, negative means relative to bottom of window. */) |
5842a27b | 5295 | (Lisp_Object arg) |
7ab12479 | 5296 | { |
b7617575 GM |
5297 | struct window *w = XWINDOW (selected_window); |
5298 | int lines, start; | |
540b6aa0 | 5299 | Lisp_Object window; |
f6b43440 RS |
5300 | #if 0 |
5301 | int this_scroll_margin; | |
5302 | #endif | |
7ab12479 | 5303 | |
e74aeda8 DA |
5304 | if (!(BUFFERP (w->contents) && XBUFFER (w->contents) == current_buffer)) |
5305 | /* This test is needed to make sure PT/PT_BYTE make sense in w->contents | |
794b75c7 SM |
5306 | when passed below to set_marker_both. */ |
5307 | error ("move-to-window-line called from unrelated buffer"); | |
6dc1d2d3 | 5308 | |
b7617575 | 5309 | window = selected_window; |
d3d50620 | 5310 | start = marker_position (w->start); |
7ab12479 JB |
5311 | if (start < BEGV || start > ZV) |
5312 | { | |
b7617575 | 5313 | int height = window_internal_height (w); |
cd2be1dd | 5314 | Fvertical_motion (make_number (- (height / 2)), window); |
e74aeda8 | 5315 | set_marker_both (w->start, w->contents, PT, PT_BYTE); |
c98ff5dd DA |
5316 | w->start_at_line_beg = !NILP (Fbolp ()); |
5317 | w->force_start = 1; | |
7ab12479 JB |
5318 | } |
5319 | else | |
d3d50620 | 5320 | Fgoto_char (w->start); |
7ab12479 | 5321 | |
b7617575 | 5322 | lines = displayed_window_lines (w); |
f6b43440 RS |
5323 | |
5324 | #if 0 | |
71f02bc5 | 5325 | this_scroll_margin = max (0, min (scroll_margin, lines / 4)); |
f6b43440 RS |
5326 | #endif |
5327 | ||
b7617575 GM |
5328 | if (NILP (arg)) |
5329 | XSETFASTINT (arg, lines / 2); | |
5330 | else | |
5331 | { | |
71f02bc5 | 5332 | EMACS_INT iarg = XINT (Fprefix_numeric_value (arg)); |
f6b43440 RS |
5333 | |
5334 | if (iarg < 0) | |
5335 | iarg = iarg + lines; | |
5336 | ||
5337 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5338 | to a place inside the scroll margins (which would cause the | |
5339 | next redisplay to scroll). I wrote this code, but then concluded | |
5340 | it is probably better not to install it. However, it is here | |
5341 | inside #if 0 so as not to lose it. -- rms. */ | |
5342 | ||
5343 | /* Don't let it get into the margin at either top or bottom. */ | |
5344 | iarg = max (iarg, this_scroll_margin); | |
5345 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5346 | #endif | |
5347 | ||
5348 | arg = make_number (iarg); | |
b7617575 GM |
5349 | } |
5350 | ||
c8bc6f65 | 5351 | /* Skip past a partially visible first line. */ |
163784df | 5352 | if (w->vscroll) |
163784df MB |
5353 | XSETINT (arg, XINT (arg) + 1); |
5354 | ||
540b6aa0 | 5355 | return Fvertical_motion (arg, window); |
7ab12479 | 5356 | } |
5500c422 GM |
5357 | |
5358 | ||
7ab12479 | 5359 | \f |
5500c422 GM |
5360 | /*********************************************************************** |
5361 | Window Configuration | |
5362 | ***********************************************************************/ | |
5363 | ||
7ab12479 JB |
5364 | struct save_window_data |
5365 | { | |
b102ceb1 | 5366 | struct vectorlike_header header; |
bdc727bf | 5367 | Lisp_Object selected_frame; |
7ab12479 JB |
5368 | Lisp_Object current_window; |
5369 | Lisp_Object current_buffer; | |
5370 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5371 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5372 | Lisp_Object root_window; |
bdc727bf | 5373 | Lisp_Object focus_frame; |
cbff28e8 RS |
5374 | /* A vector, each of whose elements is a struct saved_window |
5375 | for one window. */ | |
7ab12479 | 5376 | Lisp_Object saved_windows; |
b05b4e27 SM |
5377 | |
5378 | /* All fields above are traced by the GC. | |
6b729d16 | 5379 | From `frame-cols' down, the fields are ignored by the GC. */ |
b05b4e27 SM |
5380 | |
5381 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
5382 | int frame_tool_bar_lines; | |
7ab12479 | 5383 | }; |
ff06df24 | 5384 | |
cbff28e8 | 5385 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 5386 | struct saved_window |
ea68264b | 5387 | { |
b102ceb1 | 5388 | struct vectorlike_header header; |
496e208e | 5389 | |
28545e04 | 5390 | Lisp_Object window, buffer, start, pointm, mark; |
949cf20f | 5391 | Lisp_Object left_col, top_line, total_cols, total_lines; |
496e208e | 5392 | Lisp_Object normal_cols, normal_lines; |
949cf20f | 5393 | Lisp_Object hscroll, min_hscroll; |
ea68264b GM |
5394 | Lisp_Object parent, prev; |
5395 | Lisp_Object start_at_line_beg; | |
5396 | Lisp_Object display_table; | |
949cf20f KS |
5397 | Lisp_Object left_margin_cols, right_margin_cols; |
5398 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
562dd5e9 | 5399 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type, dedicated; |
b6f67890 | 5400 | Lisp_Object combination_limit, window_parameters; |
ea68264b GM |
5401 | }; |
5402 | ||
7ab12479 | 5403 | #define SAVED_WINDOW_N(swv,n) \ |
d6d9cbc1 | 5404 | ((struct saved_window *) (XVECTOR ((swv)->u.contents[(n)]))) |
7ab12479 JB |
5405 | |
5406 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 | 5407 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5842a27b | 5408 | (Lisp_Object object) |
7ab12479 | 5409 | { |
6ad0381c | 5410 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
5411 | } |
5412 | ||
3f8ab7bd | 5413 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 | 5414 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5842a27b | 5415 | (Lisp_Object config) |
3f8ab7bd RS |
5416 | { |
5417 | register struct save_window_data *data; | |
5418 | struct Lisp_Vector *saved_windows; | |
5419 | ||
663fbbba | 5420 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
5421 | |
5422 | data = (struct save_window_data *) XVECTOR (config); | |
5423 | saved_windows = XVECTOR (data->saved_windows); | |
d3d50620 | 5424 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
3f8ab7bd RS |
5425 | } |
5426 | ||
a7ca3326 | 5427 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
5428 | Sset_window_configuration, 1, 1, 0, |
5429 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
5430 | CONFIGURATION must be a value previously returned | |
5431 | by `current-window-configuration' (which see). | |
5432 | If CONFIGURATION was made from a frame that is now deleted, | |
5433 | only frame-independent values can be restored. In this case, | |
5434 | the return value is nil. Otherwise the value is t. */) | |
5842a27b | 5435 | (Lisp_Object configuration) |
7ab12479 | 5436 | { |
7ab12479 JB |
5437 | register struct save_window_data *data; |
5438 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 5439 | Lisp_Object new_current_buffer; |
fd482be5 | 5440 | Lisp_Object frame; |
a10c8269 | 5441 | struct frame *f; |
d311d28c | 5442 | ptrdiff_t old_point = -1; |
7ab12479 | 5443 | |
663fbbba | 5444 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 5445 | |
2f83aebe | 5446 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
5447 | saved_windows = XVECTOR (data->saved_windows); |
5448 | ||
7ab12479 | 5449 | new_current_buffer = data->current_buffer; |
e578f381 | 5450 | if (!BUFFER_LIVE_P (XBUFFER (new_current_buffer))) |
7ab12479 | 5451 | new_current_buffer = Qnil; |
72695e47 | 5452 | else |
73cadfc1 DK |
5453 | { |
5454 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
5455 | /* The code further down "preserves point" by saving here PT in |
5456 | old_point and then setting it later back into PT. When the | |
5457 | current-selected-window and the final-selected-window both show | |
5458 | the current buffer, this suffers from the problem that the | |
5459 | current PT is the window-point of the current-selected-window, | |
5460 | while the final PT is the point of the final-selected-window, so | |
5461 | this copy from one PT to the other would end up moving the | |
5462 | window-point of the final-selected-window to the window-point of | |
5463 | the current-selected-window. So we have to be careful which | |
5464 | point of the current-buffer we copy into old_point. */ | |
e74aeda8 | 5465 | if (EQ (XWINDOW (data->current_window)->contents, new_current_buffer) |
e67a1dea | 5466 | && WINDOWP (selected_window) |
e74aeda8 | 5467 | && EQ (XWINDOW (selected_window)->contents, new_current_buffer) |
e67a1dea | 5468 | && !EQ (selected_window, data->current_window)) |
4c1acb95 | 5469 | old_point = marker_position (XWINDOW (data->current_window)->pointm); |
e67a1dea SM |
5470 | else |
5471 | old_point = PT; | |
73cadfc1 | 5472 | else |
203eb0aa SM |
5473 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
5474 | point in new_current_buffer as of the last time this buffer was | |
5475 | used. This can be non-deterministic since it can be changed by | |
5476 | things like jit-lock by mere temporary selection of some random | |
5477 | window that happens to show this buffer. | |
5478 | So if possible we want this arbitrary choice of "which point" to | |
5479 | be the one from the to-be-selected-window so as to prevent this | |
5480 | window's cursor from being copied from another window. */ | |
e74aeda8 | 5481 | if (EQ (XWINDOW (data->current_window)->contents, new_current_buffer) |
203eb0aa SM |
5482 | /* If current_window = selected_window, its point is in BUF_PT. */ |
5483 | && !EQ (selected_window, data->current_window)) | |
4c1acb95 | 5484 | old_point = marker_position (XWINDOW (data->current_window)->pointm); |
203eb0aa SM |
5485 | else |
5486 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 5487 | } |
7ab12479 | 5488 | |
d3d50620 | 5489 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
fd482be5 | 5490 | f = XFRAME (frame); |
177c0ea7 | 5491 | |
fd482be5 JB |
5492 | /* If f is a dead frame, don't bother rebuilding its window tree. |
5493 | However, there is other stuff we should still try to do below. */ | |
5494 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 5495 | { |
6198ccd0 MR |
5496 | Lisp_Object window; |
5497 | Lisp_Object dead_windows = Qnil; | |
6a6ee00d | 5498 | register Lisp_Object tem, par, pers; |
fd482be5 JB |
5499 | register struct window *w; |
5500 | register struct saved_window *p; | |
5500c422 GM |
5501 | struct window *root_window; |
5502 | struct window **leaf_windows; | |
5503 | int n_leaf_windows; | |
71f02bc5 PE |
5504 | ptrdiff_t k; |
5505 | int i, n; | |
fd482be5 JB |
5506 | |
5507 | /* If the frame has been resized since this window configuration was | |
5508 | made, we change the frame to the size specified in the | |
5509 | configuration, restore the configuration, and then resize it | |
5510 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
5511 | int previous_frame_lines = FRAME_LINES (f); |
5512 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 5513 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 5514 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 5515 | |
37b9743e MR |
5516 | /* Don't do this within the main loop below: This may call Lisp |
5517 | code and is thus potentially unsafe while input is blocked. */ | |
5518 | for (k = 0; k < saved_windows->header.size; k++) | |
5519 | { | |
5520 | p = SAVED_WINDOW_N (saved_windows, k); | |
5521 | window = p->window; | |
5522 | w = XWINDOW (window); | |
e74aeda8 DA |
5523 | if (BUFFERP (w->contents) |
5524 | && !EQ (w->contents, p->buffer) | |
e578f381 | 5525 | && BUFFER_LIVE_P (XBUFFER (p->buffer))) |
37b9743e MR |
5526 | /* If a window we restore gets another buffer, record the |
5527 | window's old buffer. */ | |
5528 | call1 (Qrecord_window_buffer, window); | |
5529 | } | |
5530 | ||
d2b35234 RS |
5531 | /* The mouse highlighting code could get screwed up |
5532 | if it runs during this. */ | |
4d7e6e51 | 5533 | block_input (); |
d2b35234 | 5534 | |
b05b4e27 SM |
5535 | if (data->frame_lines != previous_frame_lines |
5536 | || data->frame_cols != previous_frame_cols) | |
5537 | change_frame_size (f, data->frame_lines, | |
5538 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 5539 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 5540 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 5541 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
5542 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
5543 | make_number (0)); | |
4314246f | 5544 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 5545 | if (data->frame_tool_bar_lines |
9ea173e8 | 5546 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
5547 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
5548 | make_number (0)); | |
4314246f | 5549 | #endif |
217f2871 | 5550 | #endif |
fd482be5 | 5551 | |
a46c0153 RS |
5552 | /* "Swap out" point from the selected window's buffer |
5553 | into the window itself. (Normally the pointm of the selected | |
5554 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
5555 | restoring the window contents, and prevent it from |
5556 | being done later on when we select a new window. */ | |
e74aeda8 | 5557 | if (! NILP (XWINDOW (selected_window)->contents)) |
596ae0cf RS |
5558 | { |
5559 | w = XWINDOW (selected_window); | |
d3d50620 | 5560 | set_marker_both (w->pointm, |
e74aeda8 DA |
5561 | w->contents, |
5562 | BUF_PT (XBUFFER (w->contents)), | |
5563 | BUF_PT_BYTE (XBUFFER (w->contents))); | |
596ae0cf RS |
5564 | } |
5565 | ||
fd482be5 | 5566 | windows_or_buffers_changed++; |
29aeee73 | 5567 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 5568 | |
5500c422 | 5569 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 5570 | is a serious redisplay flickering problem. What we would |
5500c422 | 5571 | really like to do is to free only those matrices not reused |
9d14503e | 5572 | below. */ |
5500c422 | 5573 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); |
38182d90 PE |
5574 | leaf_windows = alloca (count_windows (root_window) |
5575 | * sizeof *leaf_windows); | |
5500c422 GM |
5576 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); |
5577 | ||
fd482be5 JB |
5578 | /* Kludge Alert! |
5579 | Mark all windows now on frame as "deleted". | |
5580 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 5581 | |
fd482be5 JB |
5582 | Save their current buffers in their height fields, since we may |
5583 | need it later, if a buffer saved in the configuration is now | |
5584 | dead. */ | |
be7f5545 | 5585 | delete_all_child_windows (FRAME_ROOT_WINDOW (f)); |
fd482be5 | 5586 | |
eab3844f | 5587 | for (k = 0; k < saved_windows->header.size; k++) |
fd482be5 JB |
5588 | { |
5589 | p = SAVED_WINDOW_N (saved_windows, k); | |
6198ccd0 MR |
5590 | window = p->window; |
5591 | w = XWINDOW (window); | |
e8c17b81 | 5592 | wset_next (w, Qnil); |
7ab12479 | 5593 | |
fd482be5 | 5594 | if (!NILP (p->parent)) |
e8c17b81 PE |
5595 | wset_parent |
5596 | (w, SAVED_WINDOW_N (saved_windows, XFASTINT (p->parent))->window); | |
fd482be5 | 5597 | else |
e8c17b81 | 5598 | wset_parent (w, Qnil); |
7ab12479 | 5599 | |
fd482be5 | 5600 | if (!NILP (p->prev)) |
7ab12479 | 5601 | { |
e8c17b81 PE |
5602 | wset_prev |
5603 | (w, SAVED_WINDOW_N (saved_windows, XFASTINT (p->prev))->window); | |
5604 | wset_next (XWINDOW (w->prev), p->window); | |
fd482be5 JB |
5605 | } |
5606 | else | |
5607 | { | |
e8c17b81 | 5608 | wset_prev (w, Qnil); |
d3d50620 | 5609 | if (!NILP (w->parent)) |
e74aeda8 DA |
5610 | wset_combination (XWINDOW (w->parent), |
5611 | (XINT (p->total_cols) | |
5612 | != XWINDOW (w->parent)->total_cols), | |
5613 | p->window); | |
fd482be5 JB |
5614 | } |
5615 | ||
095d384d DA |
5616 | /* If we squirreled away the buffer, restore it now. */ |
5617 | if (BUFFERP (w->combination_limit)) | |
5618 | wset_buffer (w, w->combination_limit); | |
5f24fa51 DA |
5619 | w->left_col = XFASTINT (p->left_col); |
5620 | w->top_line = XFASTINT (p->top_line); | |
5621 | w->total_cols = XFASTINT (p->total_cols); | |
5622 | w->total_lines = XFASTINT (p->total_lines); | |
e8c17b81 PE |
5623 | wset_normal_cols (w, p->normal_cols); |
5624 | wset_normal_lines (w, p->normal_lines); | |
80b00b08 DA |
5625 | w->hscroll = XFASTINT (p->hscroll); |
5626 | w->min_hscroll = XFASTINT (p->min_hscroll); | |
e8c17b81 | 5627 | wset_display_table (w, p->display_table); |
eeaf9bf3 DA |
5628 | w->left_margin_cols = XINT (p->left_margin_cols); |
5629 | w->right_margin_cols = XINT (p->right_margin_cols); | |
9e37ee3b DA |
5630 | w->left_fringe_width = XINT (p->left_fringe_width); |
5631 | w->right_fringe_width = XINT (p->right_fringe_width); | |
2af3565e | 5632 | w->fringes_outside_margins = !NILP (p->fringes_outside_margins); |
38a2c910 | 5633 | w->scroll_bar_width = XINT (p->scroll_bar_width); |
e8c17b81 PE |
5634 | wset_vertical_scroll_bar_type (w, p->vertical_scroll_bar_type); |
5635 | wset_dedicated (w, p->dedicated); | |
5636 | wset_combination_limit (w, p->combination_limit); | |
6a6ee00d MR |
5637 | /* Restore any window parameters that have been saved. |
5638 | Parameters that have not been saved are left alone. */ | |
5639 | for (tem = p->window_parameters; CONSP (tem); tem = XCDR (tem)) | |
5640 | { | |
5641 | pers = XCAR (tem); | |
5642 | if (CONSP (pers)) | |
5643 | { | |
5644 | if (NILP (XCDR (pers))) | |
5645 | { | |
d3d50620 | 5646 | par = Fassq (XCAR (pers), w->window_parameters); |
6a6ee00d MR |
5647 | if (CONSP (par) && !NILP (XCDR (par))) |
5648 | /* Reset a parameter to nil if and only if it | |
5649 | has a non-nil association. Don't make new | |
5650 | associations. */ | |
5651 | Fsetcdr (par, Qnil); | |
5652 | } | |
5653 | else | |
5654 | /* Always restore a non-nil value. */ | |
5655 | Fset_window_parameter (window, XCAR (pers), XCDR (pers)); | |
5656 | } | |
5657 | } | |
5658 | ||
e74aeda8 | 5659 | if (BUFFERP (p->buffer) && BUFFER_LIVE_P (XBUFFER (p->buffer))) |
6198ccd0 MR |
5660 | /* If saved buffer is alive, install it. */ |
5661 | { | |
e8c17b81 PE |
5662 | wset_buffer (w, p->buffer); |
5663 | w->start_at_line_beg = !NILP (p->start_at_line_beg); | |
e74aeda8 | 5664 | set_marker_restricted (w->start, p->start, w->contents); |
e8c17b81 | 5665 | set_marker_restricted (w->pointm, p->pointm, |
e74aeda8 DA |
5666 | w->contents); |
5667 | Fset_marker (BVAR (XBUFFER (w->contents), mark), | |
5668 | p->mark, w->contents); | |
e8c17b81 PE |
5669 | |
5670 | /* As documented in Fcurrent_window_configuration, don't | |
5671 | restore the location of point in the buffer which was | |
5672 | current when the window configuration was recorded. */ | |
5673 | if (!EQ (p->buffer, new_current_buffer) | |
5674 | && XBUFFER (p->buffer) == current_buffer) | |
5675 | Fgoto_char (w->pointm); | |
077288cf | 5676 | } |
e74aeda8 DA |
5677 | else if (BUFFERP (w->contents) && BUFFER_LIVE_P (XBUFFER (w->contents))) |
5678 | /* Keep window's old buffer; make sure the markers are real. */ | |
5679 | { | |
5680 | /* Set window markers at start of visible range. */ | |
5681 | if (XMARKER (w->start)->buffer == 0) | |
5682 | set_marker_restricted_both (w->start, w->contents, 0, 0); | |
5683 | if (XMARKER (w->pointm)->buffer == 0) | |
5684 | set_marker_restricted_both | |
5685 | (w->pointm, w->contents, | |
5686 | BUF_PT (XBUFFER (w->contents)), | |
5687 | BUF_PT_BYTE (XBUFFER (w->contents))); | |
5688 | w->start_at_line_beg = 1; | |
5689 | } | |
5690 | else if (!NILP (w->start)) | |
5691 | /* Leaf window has no live buffer, get one. */ | |
fd482be5 | 5692 | { |
6198ccd0 MR |
5693 | /* Get the buffer via other_buffer_safely in order to |
5694 | avoid showing an unimportant buffer and, if necessary, to | |
5695 | recreate *scratch* in the course (part of Juanma's bs-show | |
5696 | scenario from March 2011). */ | |
e8c17b81 | 5697 | wset_buffer (w, other_buffer_safely (Fcurrent_buffer ())); |
6198ccd0 MR |
5698 | /* This will set the markers to beginning of visible |
5699 | range. */ | |
e74aeda8 DA |
5700 | set_marker_restricted_both (w->start, w->contents, 0, 0); |
5701 | set_marker_restricted_both (w->pointm, w->contents, 0, 0); | |
c98ff5dd | 5702 | w->start_at_line_beg = 1; |
d3d50620 | 5703 | if (!NILP (w->dedicated)) |
6198ccd0 MR |
5704 | /* Record this window as dead. */ |
5705 | dead_windows = Fcons (window, dead_windows); | |
5706 | /* Make sure window is no more dedicated. */ | |
e8c17b81 | 5707 | wset_dedicated (w, Qnil); |
7ab12479 JB |
5708 | } |
5709 | } | |
9ace597f | 5710 | |
f00af5b1 | 5711 | fset_root_window (f, data->root_window); |
a46c0153 RS |
5712 | /* Arrange *not* to restore point in the buffer that was |
5713 | current when the window configuration was saved. */ | |
e74aeda8 | 5714 | if (EQ (XWINDOW (data->current_window)->contents, new_current_buffer)) |
d3d50620 | 5715 | set_marker_restricted (XWINDOW (data->current_window)->pointm, |
18787f5e | 5716 | make_number (old_point), |
e74aeda8 | 5717 | XWINDOW (data->current_window)->contents); |
177c0ea7 | 5718 | |
6198ccd0 MR |
5719 | /* In the following call to `select-window', prevent "swapping out |
5720 | point" in the old selected window using the buffer that has | |
5721 | been restored into it. We already swapped out that point from | |
5722 | that window's old buffer. */ | |
e6b84b30 | 5723 | select_window (data->current_window, Qnil, 1); |
e74aeda8 | 5724 | BVAR (XBUFFER (XWINDOW (selected_window)->contents), last_selected_window) |
396a830c | 5725 | = selected_window; |
7ab12479 | 5726 | |
db269683 | 5727 | if (NILP (data->focus_frame) |
017b2bad | 5728 | || (FRAMEP (data->focus_frame) |
db269683 JB |
5729 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
5730 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 5731 | |
fd482be5 | 5732 | /* Set the screen height to the value it had before this function. */ |
949cf20f KS |
5733 | if (previous_frame_lines != FRAME_LINES (f) |
5734 | || previous_frame_cols != FRAME_COLS (f)) | |
5735 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 5736 | 0, 0, 0); |
e3678b64 | 5737 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 5738 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
5739 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
5740 | make_number (0)); | |
4314246f | 5741 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5742 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
5743 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
5744 | make_number (0)); | |
4314246f | 5745 | #endif |
217f2871 | 5746 | #endif |
d2b35234 | 5747 | |
5500c422 | 5748 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
5749 | for (i = n = 0; i < n_leaf_windows; ++i) |
5750 | { | |
e74aeda8 DA |
5751 | if (NILP (leaf_windows[i]->contents)) |
5752 | free_window_matrices (leaf_windows[i]); | |
5753 | else if (EQ (leaf_windows[i]->contents, new_current_buffer)) | |
c4280705 GM |
5754 | ++n; |
5755 | } | |
177c0ea7 | 5756 | |
bd0443bb | 5757 | adjust_frame_glyphs (f); |
4d7e6e51 | 5758 | unblock_input (); |
756b6edc | 5759 | |
6198ccd0 MR |
5760 | /* Scan dead buffer windows. */ |
5761 | for (; CONSP (dead_windows); dead_windows = XCDR (dead_windows)) | |
5762 | { | |
5763 | window = XCAR (dead_windows); | |
5764 | if (WINDOW_LIVE_P (window) && !EQ (window, FRAME_ROOT_WINDOW (f))) | |
5765 | delete_deletable_window (window); | |
5766 | } | |
5767 | ||
478292ed RS |
5768 | /* Fselect_window will have made f the selected frame, so we |
5769 | reselect the proper frame here. Fhandle_switch_frame will change the | |
5770 | selected window too, but that doesn't make the call to | |
5771 | Fselect_window above totally superfluous; it still sets f's | |
5772 | selected window. */ | |
5773 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
c6932ecd | 5774 | do_switch_frame (data->selected_frame, 0, 0, Qnil); |
478292ed | 5775 | |
eeca6f6f | 5776 | run_window_configuration_change_hook (f); |
478292ed | 5777 | } |
bdc727bf JB |
5778 | |
5779 | if (!NILP (new_current_buffer)) | |
c4b6914d MR |
5780 | { |
5781 | Fset_buffer (new_current_buffer); | |
5782 | /* If the new current buffer doesn't appear in the selected | |
5783 | window, go to its old point (see bug#12208). */ | |
e74aeda8 | 5784 | if (!EQ (XWINDOW (data->current_window)->contents, new_current_buffer)) |
c4b6914d MR |
5785 | Fgoto_char (make_number (old_point)); |
5786 | } | |
bdc727bf | 5787 | |
478292ed | 5788 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 5789 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 5790 | |
3f8ab7bd | 5791 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
5792 | } |
5793 | ||
27e498e6 PE |
5794 | void |
5795 | restore_window_configuration (Lisp_Object configuration) | |
5796 | { | |
5797 | Fset_window_configuration (configuration); | |
5798 | } | |
5799 | ||
562dd5e9 | 5800 | |
e74aeda8 DA |
5801 | /* If WINDOW is an internal window, recursively delete all child windows |
5802 | reachable via the next and contents slots of WINDOW. Otherwise setup | |
5803 | WINDOW to not show any buffer. */ | |
5804 | ||
fd482be5 | 5805 | void |
be7f5545 | 5806 | delete_all_child_windows (Lisp_Object window) |
7ab12479 | 5807 | { |
fa8a67e6 MR |
5808 | register struct window *w; |
5809 | ||
5810 | w = XWINDOW (window); | |
5811 | ||
d3d50620 | 5812 | if (!NILP (w->next)) |
fa8a67e6 | 5813 | /* Delete WINDOW's siblings (we traverse postorderly). */ |
d3d50620 | 5814 | delete_all_child_windows (w->next); |
605be8af | 5815 | |
e74aeda8 | 5816 | if (WINDOWP (w->contents)) |
fa8a67e6 | 5817 | { |
e74aeda8 DA |
5818 | delete_all_child_windows (w->contents); |
5819 | wset_combination (w, 0, Qnil); | |
fa8a67e6 | 5820 | } |
e74aeda8 | 5821 | else if (BUFFERP (w->contents)) |
fa8a67e6 MR |
5822 | { |
5823 | unshow_buffer (w); | |
d3d50620 DA |
5824 | unchain_marker (XMARKER (w->pointm)); |
5825 | unchain_marker (XMARKER (w->start)); | |
095d384d DA |
5826 | /* Since combination limit makes sense for an internal windows |
5827 | only, we use this slot to save the buffer for the sake of | |
5828 | possible resurrection in Fset_window_configuration. */ | |
e74aeda8 | 5829 | wset_combination_limit (w, w->contents); |
e8c17b81 | 5830 | wset_buffer (w, Qnil); |
fa8a67e6 | 5831 | } |
acf70840 GM |
5832 | |
5833 | Vwindow_list = Qnil; | |
7ab12479 JB |
5834 | } |
5835 | \f | |
5836 | static int | |
971de7fb | 5837 | count_windows (register struct window *window) |
7ab12479 JB |
5838 | { |
5839 | register int count = 1; | |
d3d50620 DA |
5840 | if (!NILP (window->next)) |
5841 | count += count_windows (XWINDOW (window->next)); | |
e74aeda8 DA |
5842 | if (WINDOWP (window->contents)) |
5843 | count += count_windows (XWINDOW (window->contents)); | |
7ab12479 JB |
5844 | return count; |
5845 | } | |
5846 | ||
5500c422 | 5847 | |
177c0ea7 | 5848 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 | 5849 | Value is last index + 1. */ |
5500c422 | 5850 | static int |
971de7fb | 5851 | get_leaf_windows (struct window *w, struct window **flat, int i) |
5500c422 GM |
5852 | { |
5853 | while (w) | |
5854 | { | |
e74aeda8 DA |
5855 | if (WINDOWP (w->contents)) |
5856 | i = get_leaf_windows (XWINDOW (w->contents), flat, i); | |
177c0ea7 | 5857 | else |
5500c422 GM |
5858 | flat[i++] = w; |
5859 | ||
d3d50620 | 5860 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
5500c422 GM |
5861 | } |
5862 | ||
5863 | return i; | |
5864 | } | |
5865 | ||
5866 | ||
5867 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
c80e3b4a | 5868 | null if W's current matrix is invalid, so that no meaningful glyph |
5500c422 | 5869 | can be returned. */ |
5500c422 | 5870 | struct glyph * |
971de7fb | 5871 | get_phys_cursor_glyph (struct window *w) |
5500c422 GM |
5872 | { |
5873 | struct glyph_row *row; | |
5874 | struct glyph *glyph; | |
f8fe6f96 | 5875 | int hpos = w->phys_cursor.hpos; |
5500c422 | 5876 | |
f8fe6f96 EZ |
5877 | if (!(w->phys_cursor.vpos >= 0 |
5878 | && w->phys_cursor.vpos < w->current_matrix->nrows)) | |
5879 | return NULL; | |
5880 | ||
5881 | row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos); | |
5882 | if (!row->enabled_p) | |
5883 | return NULL; | |
5884 | ||
80b00b08 | 5885 | if (w->hscroll) |
f8fe6f96 EZ |
5886 | { |
5887 | /* When the window is hscrolled, cursor hpos can legitimately be | |
5888 | out of bounds, but we draw the cursor at the corresponding | |
5889 | window margin in that case. */ | |
5890 | if (!row->reversed_p && hpos < 0) | |
5891 | hpos = 0; | |
5892 | if (row->reversed_p && hpos >= row->used[TEXT_AREA]) | |
5893 | hpos = row->used[TEXT_AREA] - 1; | |
5894 | } | |
5500c422 | 5895 | |
7216e43b | 5896 | if (0 <= hpos && hpos < row->used[TEXT_AREA]) |
f8fe6f96 | 5897 | glyph = row->glyphs[TEXT_AREA] + hpos; |
5500c422 GM |
5898 | else |
5899 | glyph = NULL; | |
5900 | ||
5901 | return glyph; | |
5902 | } | |
5903 | ||
5904 | ||
7ab12479 | 5905 | static int |
971de7fb | 5906 | save_window_save (Lisp_Object window, struct Lisp_Vector *vector, int i) |
7ab12479 JB |
5907 | { |
5908 | register struct saved_window *p; | |
5909 | register struct window *w; | |
6a6ee00d | 5910 | register Lisp_Object tem, pers, par; |
7ab12479 | 5911 | |
e74aeda8 | 5912 | for (; !NILP (window); window = w->next) |
7ab12479 JB |
5913 | { |
5914 | p = SAVED_WINDOW_N (vector, i); | |
5915 | w = XWINDOW (window); | |
5916 | ||
e8c17b81 | 5917 | wset_temslot (w, make_number (i)); i++; |
7ab12479 | 5918 | p->window = window; |
e74aeda8 | 5919 | p->buffer = (WINDOW_LEAF_P (w) ? w->contents : Qnil); |
5f24fa51 DA |
5920 | p->left_col = make_number (w->left_col); |
5921 | p->top_line = make_number (w->top_line); | |
5922 | p->total_cols = make_number (w->total_cols); | |
5923 | p->total_lines = make_number (w->total_lines); | |
d3d50620 DA |
5924 | p->normal_cols = w->normal_cols; |
5925 | p->normal_lines = w->normal_lines; | |
80b00b08 DA |
5926 | XSETFASTINT (p->hscroll, w->hscroll); |
5927 | XSETFASTINT (p->min_hscroll, w->min_hscroll); | |
d3d50620 | 5928 | p->display_table = w->display_table; |
eeaf9bf3 DA |
5929 | p->left_margin_cols = make_number (w->left_margin_cols); |
5930 | p->right_margin_cols = make_number (w->right_margin_cols); | |
9e37ee3b DA |
5931 | p->left_fringe_width = make_number (w->left_fringe_width); |
5932 | p->right_fringe_width = make_number (w->right_fringe_width); | |
2af3565e | 5933 | p->fringes_outside_margins = w->fringes_outside_margins ? Qt : Qnil; |
38a2c910 | 5934 | p->scroll_bar_width = make_number (w->scroll_bar_width); |
d3d50620 DA |
5935 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; |
5936 | p->dedicated = w->dedicated; | |
5937 | p->combination_limit = w->combination_limit; | |
6a6ee00d MR |
5938 | p->window_parameters = Qnil; |
5939 | ||
5940 | if (!NILP (Vwindow_persistent_parameters)) | |
5941 | { | |
5942 | /* Run cycle detection on Vwindow_persistent_parameters. */ | |
5943 | Lisp_Object tortoise, hare; | |
5944 | ||
5945 | hare = tortoise = Vwindow_persistent_parameters; | |
5946 | while (CONSP (hare)) | |
5947 | { | |
5948 | hare = XCDR (hare); | |
5949 | if (!CONSP (hare)) | |
5950 | break; | |
5951 | ||
5952 | hare = XCDR (hare); | |
5953 | tortoise = XCDR (tortoise); | |
5954 | ||
5955 | if (EQ (hare, tortoise)) | |
5956 | /* Reset Vwindow_persistent_parameters to Qnil. */ | |
5957 | { | |
5958 | Vwindow_persistent_parameters = Qnil; | |
5959 | break; | |
5960 | } | |
5961 | } | |
5962 | ||
5963 | for (tem = Vwindow_persistent_parameters; CONSP (tem); | |
5964 | tem = XCDR (tem)) | |
5965 | { | |
5966 | pers = XCAR (tem); | |
34a02f46 MR |
5967 | /* Save values for persistent window parameters. */ |
5968 | if (CONSP (pers) && !NILP (XCDR (pers))) | |
6a6ee00d | 5969 | { |
d3d50620 | 5970 | par = Fassq (XCAR (pers), w->window_parameters); |
6a6ee00d MR |
5971 | if (NILP (par)) |
5972 | /* If the window has no value for the parameter, | |
5973 | make one. */ | |
5974 | p->window_parameters = Fcons (Fcons (XCAR (pers), Qnil), | |
5975 | p->window_parameters); | |
5976 | else | |
5977 | /* If the window has a value for the parameter, | |
5978 | save it. */ | |
5979 | p->window_parameters = Fcons (Fcons (XCAR (par), | |
5980 | XCDR (par)), | |
5981 | p->window_parameters); | |
5982 | } | |
5983 | } | |
5984 | } | |
5985 | ||
e74aeda8 | 5986 | if (BUFFERP (w->contents)) |
7ab12479 | 5987 | { |
6a6ee00d MR |
5988 | /* Save w's value of point in the window configuration. If w |
5989 | is the selected window, then get the value of point from | |
5990 | the buffer; pointm is garbage in the selected window. */ | |
7ab12479 | 5991 | if (EQ (window, selected_window)) |
e74aeda8 DA |
5992 | p->pointm = build_marker (XBUFFER (w->contents), |
5993 | BUF_PT (XBUFFER (w->contents)), | |
5994 | BUF_PT_BYTE (XBUFFER (w->contents))); | |
7ab12479 | 5995 | else |
d3d50620 | 5996 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
de8c03dc SM |
5997 | XMARKER (p->pointm)->insertion_type |
5998 | = !NILP (Vwindow_point_insertion_type); | |
7ab12479 | 5999 | |
d3d50620 | 6000 | p->start = Fcopy_marker (w->start, Qnil); |
c98ff5dd | 6001 | p->start_at_line_beg = w->start_at_line_beg ? Qt : Qnil; |
7ab12479 | 6002 | |
e74aeda8 | 6003 | tem = BVAR (XBUFFER (w->contents), mark); |
eeb82665 | 6004 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6005 | } |
6006 | else | |
6007 | { | |
6008 | p->pointm = Qnil; | |
6009 | p->start = Qnil; | |
6010 | p->mark = Qnil; | |
6011 | p->start_at_line_beg = Qnil; | |
6012 | } | |
6013 | ||
d3d50620 | 6014 | if (NILP (w->parent)) |
7ab12479 JB |
6015 | p->parent = Qnil; |
6016 | else | |
d3d50620 | 6017 | p->parent = XWINDOW (w->parent)->temslot; |
7ab12479 | 6018 | |
d3d50620 | 6019 | if (NILP (w->prev)) |
7ab12479 JB |
6020 | p->prev = Qnil; |
6021 | else | |
d3d50620 | 6022 | p->prev = XWINDOW (w->prev)->temslot; |
7ab12479 | 6023 | |
e74aeda8 DA |
6024 | if (WINDOWP (w->contents)) |
6025 | i = save_window_save (w->contents, vector, i); | |
7ab12479 JB |
6026 | } |
6027 | ||
6028 | return i; | |
6029 | } | |
6030 | ||
a7ca3326 | 6031 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6032 | Scurrent_window_configuration, 0, 1, 0, |
6033 | doc: /* Return an object representing the current window configuration of FRAME. | |
6034 | If FRAME is nil or omitted, use the selected frame. | |
6035 | This describes the number of windows, their sizes and current buffers, | |
6036 | and for each displayed buffer, where display starts, and the positions of | |
6037 | point and mark. An exception is made for point in the current buffer: | |
6038 | its value is -not- saved. | |
6039 | This also records the currently selected frame, and FRAME's focus | |
34a02f46 MR |
6040 | redirection (see `redirect-frame-focus'). The variable |
6041 | `window-persistent-parameters' specifies which window parameters are | |
6042 | saved by this function. */) | |
5842a27b | 6043 | (Lisp_Object frame) |
7ab12479 JB |
6044 | { |
6045 | register Lisp_Object tem; | |
6046 | register int n_windows; | |
6047 | register struct save_window_data *data; | |
6048 | register int i; | |
d9f07150 | 6049 | struct frame *f = decode_live_frame (frame); |
7ab12479 | 6050 | |
44fa5b1e | 6051 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
6052 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
6053 | PVEC_WINDOW_CONFIGURATION); | |
6054 | ||
6055 | data->frame_cols = FRAME_COLS (f); | |
6056 | data->frame_lines = FRAME_LINES (f); | |
6057 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
6058 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 6059 | data->selected_frame = selected_frame; |
44fa5b1e | 6060 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6061 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6062 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6063 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6064 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6065 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
25721f5b | 6066 | tem = make_uninit_vector (n_windows); |
7ab12479 JB |
6067 | data->saved_windows = tem; |
6068 | for (i = 0; i < n_windows; i++) | |
28be1ada | 6069 | ASET (tem, i, |
25721f5b | 6070 | Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil)); |
a1d58e5b | 6071 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6072 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6073 | return (tem); |
6074 | } | |
25554267 DA |
6075 | |
6076 | /* Called after W's margins, fringes or scroll bars was adjusted. */ | |
6077 | ||
6078 | static void | |
6079 | apply_window_adjustment (struct window *w) | |
6080 | { | |
6081 | eassert (w); | |
6082 | adjust_window_margins (w); | |
6083 | clear_glyph_matrix (w->current_matrix); | |
6084 | w->window_end_valid = 0; | |
6085 | windows_or_buffers_changed++; | |
bd0443bb | 6086 | adjust_frame_glyphs (XFRAME (WINDOW_FRAME (w))); |
25554267 DA |
6087 | } |
6088 | ||
5500c422 GM |
6089 | \f |
6090 | /*********************************************************************** | |
6091 | Marginal Areas | |
6092 | ***********************************************************************/ | |
6093 | ||
25554267 DA |
6094 | static struct window * |
6095 | set_window_margins (struct window *w, Lisp_Object left_width, | |
6096 | Lisp_Object right_width) | |
5500c422 | 6097 | { |
eeaf9bf3 | 6098 | int left, right; |
5500c422 | 6099 | |
eeaf9bf3 | 6100 | /* FIXME: what about margins that are too wide? */ |
eeaf9bf3 DA |
6101 | left = (NILP (left_width) ? 0 |
6102 | : (CHECK_NATNUM (left_width), XINT (left_width))); | |
6103 | right = (NILP (right_width) ? 0 | |
6104 | : (CHECK_NATNUM (right_width), XINT (right_width))); | |
5500c422 | 6105 | |
eeaf9bf3 | 6106 | if (w->left_margin_cols != left || w->right_margin_cols != right) |
6b61353c | 6107 | { |
eeaf9bf3 DA |
6108 | w->left_margin_cols = left; |
6109 | w->right_margin_cols = right; | |
25554267 DA |
6110 | return w; |
6111 | } | |
6112 | return NULL; | |
6113 | } | |
949cf20f | 6114 | |
25554267 DA |
6115 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, |
6116 | 2, 3, 0, | |
6117 | doc: /* Set width of marginal areas of window WINDOW. | |
6118 | WINDOW must be a live window and defaults to the selected one. | |
949cf20f | 6119 | |
25554267 DA |
6120 | Second arg LEFT-WIDTH specifies the number of character cells to |
6121 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6122 | does the same for the right marginal area. A nil width parameter | |
6123 | means no margin. | |
5500c422 | 6124 | |
25554267 DA |
6125 | Return t if any margin was actually changed and nil otherwise. */) |
6126 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width) | |
6127 | { | |
6128 | struct window *w = set_window_margins (decode_live_window (window), | |
6129 | left_width, right_width); | |
6130 | return w ? (apply_window_adjustment (w), Qt) : Qnil; | |
5500c422 GM |
6131 | } |
6132 | ||
6133 | ||
6134 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6135 | 0, 1, 0, | |
fdb82f93 | 6136 | doc: /* Get width of marginal areas of window WINDOW. |
52162052 MR |
6137 | WINDOW must be a live window and defaults to the selected one. |
6138 | ||
fdb82f93 PJ |
6139 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). |
6140 | If a marginal area does not exist, its width will be returned | |
6141 | as nil. */) | |
5842a27b | 6142 | (Lisp_Object window) |
5500c422 | 6143 | { |
52162052 | 6144 | struct window *w = decode_live_window (window); |
2fa611b7 EZ |
6145 | return Fcons (w->left_margin_cols ? make_number (w->left_margin_cols) : Qnil, |
6146 | w->right_margin_cols ? make_number (w->right_margin_cols) : Qnil); | |
949cf20f KS |
6147 | } |
6148 | ||
6149 | ||
6150 | \f | |
6151 | /*********************************************************************** | |
6152 | Fringes | |
6153 | ***********************************************************************/ | |
6154 | ||
25554267 DA |
6155 | static struct window * |
6156 | set_window_fringes (struct window *w, Lisp_Object left_width, | |
6157 | Lisp_Object right_width, Lisp_Object outside_margins) | |
949cf20f | 6158 | { |
9e37ee3b | 6159 | int left, right, outside = !NILP (outside_margins); |
949cf20f | 6160 | |
9e37ee3b DA |
6161 | left = (NILP (left_width) ? -1 |
6162 | : (CHECK_NATNUM (left_width), XINT (left_width))); | |
6163 | right = (NILP (right_width) ? -1 | |
6164 | : (CHECK_NATNUM (right_width), XINT (right_width))); | |
5a857365 | 6165 | |
9e37ee3b | 6166 | /* Do nothing on a tty or if nothing to actually change. */ |
d46c6df5 | 6167 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
9e37ee3b DA |
6168 | && (w->left_fringe_width != left |
6169 | || w->right_fringe_width != right | |
2af3565e | 6170 | || w->fringes_outside_margins != outside)) |
949cf20f | 6171 | { |
9e37ee3b DA |
6172 | w->left_fringe_width = left; |
6173 | w->right_fringe_width = right; | |
2af3565e | 6174 | w->fringes_outside_margins = outside; |
25554267 DA |
6175 | return w; |
6176 | } | |
6177 | return NULL; | |
6178 | } | |
949cf20f | 6179 | |
25554267 DA |
6180 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, |
6181 | 2, 4, 0, | |
6182 | doc: /* Set the fringe widths of window WINDOW. | |
6183 | WINDOW must be a live window and defaults to the selected one. | |
949cf20f | 6184 | |
25554267 DA |
6185 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for |
6186 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6187 | fringe width. If a fringe width arg is nil, that means to use the | |
6188 | frame's default fringe width. Default fringe widths can be set with | |
6189 | the command `set-fringe-style'. | |
6190 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6191 | outside of the display margins. By default, fringes are drawn between | |
6192 | display marginal areas and the text area. | |
949cf20f | 6193 | |
25554267 DA |
6194 | Return t if any fringe was actually changed and nil otherwise. */) |
6195 | (Lisp_Object window, Lisp_Object left_width, | |
6196 | Lisp_Object right_width, Lisp_Object outside_margins) | |
6197 | { | |
6198 | struct window *w | |
6199 | = set_window_fringes (decode_live_window (window), | |
6200 | left_width, right_width, outside_margins); | |
6201 | return w ? (apply_window_adjustment (w), Qt) : Qnil; | |
949cf20f KS |
6202 | } |
6203 | ||
6204 | ||
6205 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6206 | 0, 1, 0, | |
6207 | doc: /* Get width of fringes of window WINDOW. | |
52162052 MR |
6208 | WINDOW must be a live window and defaults to the selected one. |
6209 | ||
6b61353c | 6210 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
5842a27b | 6211 | (Lisp_Object window) |
949cf20f | 6212 | { |
52162052 | 6213 | struct window *w = decode_live_window (window); |
d46c6df5 | 6214 | |
89bc0592 DA |
6215 | return list3 (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6216 | make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
6217 | WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) ? Qt : Qnil); | |
949cf20f KS |
6218 | } |
6219 | ||
6220 | ||
6221 | \f | |
6222 | /*********************************************************************** | |
6223 | Scroll bars | |
6224 | ***********************************************************************/ | |
6225 | ||
25554267 DA |
6226 | static struct window * |
6227 | set_window_scroll_bars (struct window *w, Lisp_Object width, | |
6228 | Lisp_Object vertical_type, Lisp_Object horizontal_type) | |
949cf20f | 6229 | { |
38a2c910 | 6230 | int iwidth = (NILP (width) ? -1 : (CHECK_NATNUM (width), XINT (width))); |
949cf20f | 6231 | |
38a2c910 DA |
6232 | if (iwidth == 0) |
6233 | vertical_type = Qnil; | |
949cf20f | 6234 | |
413a79ad | 6235 | if (!(NILP (vertical_type) |
0cc1039f | 6236 | || EQ (vertical_type, Qleft) |
6b61353c KH |
6237 | || EQ (vertical_type, Qright) |
6238 | || EQ (vertical_type, Qt))) | |
6239 | error ("Invalid type of vertical scroll bar"); | |
6240 | ||
38a2c910 | 6241 | if (w->scroll_bar_width != iwidth |
d3d50620 | 6242 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) |
949cf20f | 6243 | { |
38a2c910 | 6244 | w->scroll_bar_width = iwidth; |
e8c17b81 | 6245 | wset_vertical_scroll_bar_type (w, vertical_type); |
25554267 DA |
6246 | return w; |
6247 | } | |
6248 | return NULL; | |
6249 | } | |
949cf20f | 6250 | |
25554267 DA |
6251 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, |
6252 | Sset_window_scroll_bars, 2, 4, 0, | |
6253 | doc: /* Set width and type of scroll bars of window WINDOW. | |
6254 | WINDOW must be a live window and defaults to the selected one. | |
949cf20f | 6255 | |
25554267 DA |
6256 | Second parameter WIDTH specifies the pixel width for the scroll bar; |
6257 | this is automatically adjusted to a multiple of the frame column width. | |
6258 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6259 | bar: left, right, or nil. | |
6260 | If WIDTH is nil, use the frame's scroll-bar width. | |
6261 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. | |
6262 | Fourth parameter HORIZONTAL-TYPE is currently unused. | |
949cf20f | 6263 | |
25554267 DA |
6264 | Return t if scroll bars was actually changed and nil otherwise. */) |
6265 | (Lisp_Object window, Lisp_Object width, | |
6266 | Lisp_Object vertical_type, Lisp_Object horizontal_type) | |
6267 | { | |
6268 | struct window *w | |
6269 | = set_window_scroll_bars (decode_live_window (window), | |
6270 | width, vertical_type, horizontal_type); | |
6271 | return w ? (apply_window_adjustment (w), Qt) : Qnil; | |
949cf20f KS |
6272 | } |
6273 | ||
6274 | ||
6275 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6276 | 0, 1, 0, | |
6277 | doc: /* Get width and type of scroll bars of window WINDOW. | |
52162052 MR |
6278 | WINDOW must be a live window and defaults to the selected one. |
6279 | ||
6b61353c KH |
6280 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6281 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6282 | value. */) | |
5842a27b | 6283 | (Lisp_Object window) |
949cf20f | 6284 | { |
52162052 | 6285 | struct window *w = decode_live_window (window); |
89bc0592 DA |
6286 | |
6287 | return list4 (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
949cf20f KS |
6288 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) |
6289 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
89bc0592 DA |
6290 | make_number (WINDOW_SCROLL_BAR_COLS (w)), |
6291 | w->vertical_scroll_bar_type, Qnil); | |
5500c422 GM |
6292 | } |
6293 | ||
6294 | ||
7ab12479 | 6295 | \f |
5500c422 GM |
6296 | /*********************************************************************** |
6297 | Smooth scrolling | |
6298 | ***********************************************************************/ | |
6299 | ||
0cc1039f | 6300 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 | 6301 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
49745b39 | 6302 | If WINDOW is omitted or nil, it defaults to the selected window. |
0cc1039f | 6303 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6304 | optional second arg PIXELS-P means value is measured in pixels. */) |
5842a27b | 6305 | (Lisp_Object window, Lisp_Object pixels_p) |
5500c422 | 6306 | { |
47004952 | 6307 | Lisp_Object result; |
1f76f6f5 MR |
6308 | struct window *w = decode_live_window (window); |
6309 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 6310 | |
5500c422 | 6311 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6312 | result = (NILP (pixels_p) |
6313 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6314 | : make_number (-w->vscroll)); | |
5500c422 | 6315 | else |
47004952 GM |
6316 | result = make_number (0); |
6317 | return result; | |
5500c422 GM |
6318 | } |
6319 | ||
6320 | ||
6321 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6322 | 2, 3, 0, |
fdb82f93 | 6323 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6324 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6325 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6326 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6327 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6328 | corresponds to an integral number of pixels. The return value is the | |
6329 | result of this rounding. | |
6330 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
5842a27b | 6331 | (Lisp_Object window, Lisp_Object vscroll, Lisp_Object pixels_p) |
5500c422 | 6332 | { |
1f76f6f5 MR |
6333 | struct window *w = decode_live_window (window); |
6334 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 6335 | |
b7826503 | 6336 | CHECK_NUMBER_OR_FLOAT (vscroll); |
177c0ea7 | 6337 | |
5500c422 GM |
6338 | if (FRAME_WINDOW_P (f)) |
6339 | { | |
6340 | int old_dy = w->vscroll; | |
177c0ea7 | 6341 | |
0cc1039f KS |
6342 | w->vscroll = - (NILP (pixels_p) |
6343 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6344 | : XFLOATINT (vscroll)); | |
47004952 | 6345 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6346 | |
e56263e5 KS |
6347 | if (w->vscroll != old_dy) |
6348 | { | |
6349 | /* Adjust glyph matrix of the frame if the virtual display | |
6350 | area becomes larger than before. */ | |
6351 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
bd0443bb | 6352 | adjust_frame_glyphs (f); |
177c0ea7 | 6353 | |
e56263e5 | 6354 | /* Prevent redisplay shortcuts. */ |
e74aeda8 | 6355 | XBUFFER (w->contents)->prevent_redisplay_optimizations_p = 1; |
e56263e5 | 6356 | } |
5500c422 | 6357 | } |
177c0ea7 | 6358 | |
0cc1039f | 6359 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 6360 | } |
177c0ea7 | 6361 | |
7bbb5782 GM |
6362 | \f |
6363 | /* Call FN for all leaf windows on frame F. FN is called with the | |
6364 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 6365 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 | 6366 | |
2f7c71a1 AS |
6367 | static void |
6368 | foreach_window (struct frame *f, int (*fn) (struct window *, void *), | |
6369 | void *user_data) | |
7bbb5782 | 6370 | { |
56f2de10 | 6371 | /* delete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
76fb556f YM |
6372 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) |
6373 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
6374 | } |
6375 | ||
6376 | ||
6377 | /* Helper function for foreach_window. Call FN for all leaf windows | |
6378 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 6379 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 6380 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 6381 | |
67492200 | 6382 | static int |
971de7fb | 6383 | foreach_window_1 (struct window *w, int (*fn) (struct window *, void *), void *user_data) |
7bbb5782 | 6384 | { |
67492200 | 6385 | int cont; |
177c0ea7 | 6386 | |
67492200 | 6387 | for (cont = 1; w && cont;) |
7bbb5782 | 6388 | { |
e74aeda8 DA |
6389 | if (WINDOWP (w->contents)) |
6390 | cont = foreach_window_1 (XWINDOW (w->contents), fn, user_data); | |
177c0ea7 | 6391 | else |
0f532a9a | 6392 | cont = fn (w, user_data); |
177c0ea7 | 6393 | |
d3d50620 | 6394 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
7bbb5782 | 6395 | } |
67492200 GM |
6396 | |
6397 | return cont; | |
7bbb5782 GM |
6398 | } |
6399 | ||
5500c422 GM |
6400 | /*********************************************************************** |
6401 | Initialization | |
6402 | ***********************************************************************/ | |
6403 | ||
6198ccd0 MR |
6404 | /* Return 1 if window configurations CONFIGURATION1 and CONFIGURATION2 |
6405 | describe the same state of affairs. This is used by Fequal. | |
6406 | ||
f75d7a91 | 6407 | IGNORE_POSITIONS means ignore non-matching scroll positions |
6198ccd0 MR |
6408 | and the like. |
6409 | ||
e4769531 | 6410 | This ignores a couple of things like the dedication status of |
b6f67890 MR |
6411 | window, combination_limit and the like. This might have to be |
6412 | fixed. */ | |
cbff28e8 | 6413 | |
f75d7a91 PE |
6414 | bool |
6415 | compare_window_configurations (Lisp_Object configuration1, | |
6416 | Lisp_Object configuration2, | |
6417 | bool ignore_positions) | |
cbff28e8 RS |
6418 | { |
6419 | register struct save_window_data *d1, *d2; | |
6198ccd0 | 6420 | struct Lisp_Vector *sws1, *sws2; |
71f02bc5 | 6421 | ptrdiff_t i; |
cbff28e8 | 6422 | |
6198ccd0 MR |
6423 | CHECK_WINDOW_CONFIGURATION (configuration1); |
6424 | CHECK_WINDOW_CONFIGURATION (configuration2); | |
6425 | ||
6426 | d1 = (struct save_window_data *) XVECTOR (configuration1); | |
6427 | d2 = (struct save_window_data *) XVECTOR (configuration2); | |
6428 | sws1 = XVECTOR (d1->saved_windows); | |
6429 | sws2 = XVECTOR (d2->saved_windows); | |
6430 | ||
6431 | /* Frame settings must match. */ | |
6432 | if (d1->frame_cols != d2->frame_cols | |
6433 | || d1->frame_lines != d2->frame_lines | |
6434 | || d1->frame_menu_bar_lines != d2->frame_menu_bar_lines | |
6435 | || !EQ (d1->selected_frame, d2->selected_frame) | |
6436 | || !EQ (d1->current_buffer, d2->current_buffer) | |
6437 | || (!ignore_positions | |
6438 | && (!EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window) | |
6439 | || !EQ (d1->minibuf_selected_window, d2->minibuf_selected_window))) | |
6440 | || !EQ (d1->focus_frame, d2->focus_frame) | |
6441 | /* Verify that the two configurations have the same number of windows. */ | |
6442 | || sws1->header.size != sws2->header.size) | |
cbff28e8 | 6443 | return 0; |
cbff28e8 | 6444 | |
6198ccd0 | 6445 | for (i = 0; i < sws1->header.size; i++) |
cbff28e8 | 6446 | { |
6198ccd0 | 6447 | struct saved_window *sw1, *sw2; |
cbff28e8 | 6448 | |
6198ccd0 MR |
6449 | sw1 = SAVED_WINDOW_N (sws1, i); |
6450 | sw2 = SAVED_WINDOW_N (sws2, i); | |
6451 | ||
6452 | if ( | |
6453 | /* The "current" windows in the two configurations must | |
6454 | correspond to each other. */ | |
6455 | EQ (d1->current_window, sw1->window) | |
6456 | != EQ (d2->current_window, sw2->window) | |
6457 | /* Windows' buffers must match. */ | |
6458 | || !EQ (sw1->buffer, sw2->buffer) | |
6459 | || !EQ (sw1->left_col, sw2->left_col) | |
6460 | || !EQ (sw1->top_line, sw2->top_line) | |
6461 | || !EQ (sw1->total_cols, sw2->total_cols) | |
6462 | || !EQ (sw1->total_lines, sw2->total_lines) | |
6463 | || !EQ (sw1->display_table, sw2->display_table) | |
6464 | /* The next two disjuncts check the window structure for | |
6465 | equality. */ | |
6466 | || !EQ (sw1->parent, sw2->parent) | |
6467 | || !EQ (sw1->prev, sw2->prev) | |
6468 | || (!ignore_positions | |
6469 | && (!EQ (sw1->hscroll, sw2->hscroll) | |
6470 | || !EQ (sw1->min_hscroll, sw2->min_hscroll) | |
6471 | || !EQ (sw1->start_at_line_beg, sw2->start_at_line_beg) | |
6472 | || NILP (Fequal (sw1->start, sw2->start)) | |
6473 | || NILP (Fequal (sw1->pointm, sw2->pointm)) | |
6474 | || NILP (Fequal (sw1->mark, sw2->mark)))) | |
6475 | || !EQ (sw1->left_margin_cols, sw2->left_margin_cols) | |
6476 | || !EQ (sw1->right_margin_cols, sw2->right_margin_cols) | |
6477 | || !EQ (sw1->left_fringe_width, sw2->left_fringe_width) | |
6478 | || !EQ (sw1->right_fringe_width, sw2->right_fringe_width) | |
6479 | || !EQ (sw1->fringes_outside_margins, sw2->fringes_outside_margins) | |
6480 | || !EQ (sw1->scroll_bar_width, sw2->scroll_bar_width) | |
6481 | || !EQ (sw1->vertical_scroll_bar_type, sw2->vertical_scroll_bar_type)) | |
949cf20f | 6482 | return 0; |
cbff28e8 RS |
6483 | } |
6484 | ||
6485 | return 1; | |
6486 | } | |
2f8274be RS |
6487 | |
6488 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
6489 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
6490 | doc: /* Compare two window configurations as regards the structure of windows. |
6491 | This function ignores details such as the values of point and mark | |
6492 | and scrolling positions. */) | |
5842a27b | 6493 | (Lisp_Object x, Lisp_Object y) |
2f8274be RS |
6494 | { |
6495 | if (compare_window_configurations (x, y, 1)) | |
6496 | return Qt; | |
6497 | return Qnil; | |
6498 | } | |
cbff28e8 | 6499 | \f |
dfcf069d | 6500 | void |
971de7fb | 6501 | init_window_once (void) |
7ab12479 | 6502 | { |
3224dac1 | 6503 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
6504 | XSETFRAME (selected_frame, f); |
6505 | Vterminal_frame = selected_frame; | |
e69b0960 DA |
6506 | minibuf_window = f->minibuffer_window; |
6507 | selected_window = f->selected_window; | |
5b03d3c0 RS |
6508 | |
6509 | window_initialized = 1; | |
7ab12479 JB |
6510 | } |
6511 | ||
67492200 | 6512 | void |
971de7fb | 6513 | init_window (void) |
67492200 GM |
6514 | { |
6515 | Vwindow_list = Qnil; | |
6516 | } | |
6517 | ||
dfcf069d | 6518 | void |
971de7fb | 6519 | syms_of_window (void) |
7ab12479 | 6520 | { |
cd3520a4 JB |
6521 | DEFSYM (Qscroll_up, "scroll-up"); |
6522 | DEFSYM (Qscroll_down, "scroll-down"); | |
6523 | DEFSYM (Qscroll_command, "scroll-command"); | |
a4b000fb JL |
6524 | |
6525 | Fput (Qscroll_up, Qscroll_command, Qt); | |
6526 | Fput (Qscroll_down, Qscroll_command, Qt); | |
6527 | ||
cd3520a4 JB |
6528 | DEFSYM (Qwindow_configuration_change_hook, "window-configuration-change-hook"); |
6529 | DEFSYM (Qwindowp, "windowp"); | |
6530 | DEFSYM (Qwindow_configuration_p, "window-configuration-p"); | |
6531 | DEFSYM (Qwindow_live_p, "window-live-p"); | |
52162052 | 6532 | DEFSYM (Qwindow_valid_p, "window-valid-p"); |
cd3520a4 JB |
6533 | DEFSYM (Qwindow_deletable_p, "window-deletable-p"); |
6534 | DEFSYM (Qdelete_window, "delete-window"); | |
5386012d MR |
6535 | DEFSYM (Qwindow_resize_root_window, "window--resize-root-window"); |
6536 | DEFSYM (Qwindow_resize_root_window_vertically, "window--resize-root-window-vertically"); | |
cd3520a4 JB |
6537 | DEFSYM (Qsafe, "safe"); |
6538 | DEFSYM (Qdisplay_buffer, "display-buffer"); | |
6539 | DEFSYM (Qreplace_buffer_in_windows, "replace-buffer-in-windows"); | |
6540 | DEFSYM (Qrecord_window_buffer, "record-window-buffer"); | |
6541 | DEFSYM (Qget_mru_window, "get-mru-window"); | |
5938d519 | 6542 | DEFSYM (Qwindow_size, "window-size"); |
cd3520a4 JB |
6543 | DEFSYM (Qtemp_buffer_show_hook, "temp-buffer-show-hook"); |
6544 | DEFSYM (Qabove, "above"); | |
6545 | DEFSYM (Qbelow, "below"); | |
6a6ee00d | 6546 | DEFSYM (Qclone_of, "clone-of"); |
b9e809c2 | 6547 | |
67492200 | 6548 | staticpro (&Vwindow_list); |
8bfb170b KS |
6549 | |
6550 | minibuf_selected_window = Qnil; | |
3dbab091 | 6551 | staticpro (&minibuf_selected_window); |
67492200 | 6552 | |
c876b227 | 6553 | window_scroll_pixel_based_preserve_x = -1; |
66fe93d1 | 6554 | window_scroll_pixel_based_preserve_y = -1; |
c876b227 SM |
6555 | window_scroll_preserve_hpos = -1; |
6556 | window_scroll_preserve_vpos = -1; | |
66d43aea | 6557 | |
29208e82 | 6558 | DEFVAR_LISP ("temp-buffer-show-function", Vtemp_buffer_show_function, |
fdb82f93 PJ |
6559 | doc: /* Non-nil means call as function to display a help buffer. |
6560 | The function is called with one argument, the buffer to be displayed. | |
6561 | Used by `with-output-to-temp-buffer'. | |
6562 | If this function is used, then it must do the entire job of showing | |
6563 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 | 6564 | Vtemp_buffer_show_function = Qnil; |
e10ac9f1 | 6565 | |
29208e82 | 6566 | DEFVAR_LISP ("minibuffer-scroll-window", Vminibuf_scroll_window, |
fdb82f93 | 6567 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
6568 | Vminibuf_scroll_window = Qnil; |
6569 | ||
29208e82 | 6570 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", mode_line_in_non_selected_windows, |
26124d5e | 6571 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
6572 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
6573 | is displayed in the `mode-line' face. */); | |
6574 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 6575 | |
29208e82 | 6576 | DEFVAR_LISP ("other-window-scroll-buffer", Vother_window_scroll_buffer, |
fdb82f93 | 6577 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
6578 | Vother_window_scroll_buffer = Qnil; |
6579 | ||
29208e82 | 6580 | DEFVAR_BOOL ("auto-window-vscroll", auto_window_vscroll_p, |
e10ac9f1 | 6581 | doc: /* Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); |
e56263e5 KS |
6582 | auto_window_vscroll_p = 1; |
6583 | ||
29208e82 | 6584 | DEFVAR_INT ("next-screen-context-lines", next_screen_context_lines, |
e10ac9f1 | 6585 | doc: /* Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
6586 | next_screen_context_lines = 2; |
6587 | ||
5500c422 | 6588 | DEFVAR_LISP ("scroll-preserve-screen-position", |
29208e82 | 6589 | Vscroll_preserve_screen_position, |
e10ac9f1 | 6590 | doc: /* Controls if scroll commands move point to keep its screen position unchanged. |
bdf4ec93 RS |
6591 | A value of nil means point does not keep its screen position except |
6592 | at the scroll margin or window boundary respectively. | |
6593 | A value of t means point keeps its screen position if the scroll | |
6594 | command moved it vertically out of the window, e.g. when scrolling | |
6595 | by full screens. | |
9013a7f8 | 6596 | Any other value means point always keeps its screen position. |
a4b000fb JL |
6597 | Scroll commands should have the `scroll-command' property |
6598 | on their symbols to be controlled by this variable. */); | |
5500c422 | 6599 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 6600 | |
29208e82 | 6601 | DEFVAR_LISP ("window-point-insertion-type", Vwindow_point_insertion_type, |
a1562258 SM |
6602 | doc: /* Type of marker to use for `window-point'. */); |
6603 | Vwindow_point_insertion_type = Qnil; | |
6604 | ||
543f5fb1 | 6605 | DEFVAR_LISP ("window-configuration-change-hook", |
29208e82 | 6606 | Vwindow_configuration_change_hook, |
fdb82f93 | 6607 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
6608 | The buffer-local part is run once per window, with the relevant window |
6609 | selected; while the global part is run only once for the modified frame, | |
6610 | with the relevant frame selected. */); | |
543f5fb1 RS |
6611 | Vwindow_configuration_change_hook = Qnil; |
6612 | ||
29208e82 | 6613 | DEFVAR_LISP ("recenter-redisplay", Vrecenter_redisplay, |
61d4b438 MR |
6614 | doc: /* Non-nil means `recenter' redraws entire frame. |
6615 | If this option is non-nil, then the `recenter' command with a nil | |
6616 | argument will redraw the entire frame; the special value `tty' causes | |
6617 | the frame to be redrawn only if it is a tty frame. */); | |
666e158e MB |
6618 | Vrecenter_redisplay = Qtty; |
6619 | ||
a0c2d0ae | 6620 | DEFVAR_LISP ("window-combination-resize", Vwindow_combination_resize, |
454592a6 | 6621 | doc: /* If t, resize window combinations proportionally. |
1a13852e | 6622 | If this variable is nil, splitting a window gets the entire screen space |
a0c2d0ae | 6623 | for displaying the new window from the window to split. Deleting and |
df85d315 | 6624 | resizing a window preferably resizes one adjacent window only. |
a0c2d0ae | 6625 | |
454592a6 | 6626 | If this variable is t, splitting a window tries to get the space |
a0c2d0ae MR |
6627 | proportionally from all windows in the same combination. This also |
6628 | allows to split a window that is otherwise too small or of fixed size. | |
6629 | Resizing and deleting a window proportionally resize all windows in the | |
6630 | same combination. | |
1a13852e | 6631 | |
454592a6 MR |
6632 | Other values are reserved for future use. |
6633 | ||
9fc9a531 AH |
6634 | This variable takes no effect if the variable `window-combination-limit' is |
6635 | non-nil. */); | |
a0c2d0ae | 6636 | Vwindow_combination_resize = Qnil; |
1a13852e | 6637 | |
b6f67890 | 6638 | DEFVAR_LISP ("window-combination-limit", Vwindow_combination_limit, |
8e17c9ba MR |
6639 | doc: /* If non-nil, splitting a window makes a new parent window. |
6640 | The following values are recognized: | |
1a13852e | 6641 | |
8e17c9ba | 6642 | nil means splitting a window will create a new parent window only if the |
5938d519 MR |
6643 | window has no parent window or the window shall become part of a |
6644 | combination orthogonal to the one it is part of. | |
1a13852e | 6645 | |
5938d519 MR |
6646 | `window-size' means that splitting a window for displaying a buffer |
6647 | makes a new parent window provided `display-buffer' is supposed to | |
6648 | explicitly set the window's size due to the presence of a | |
6649 | `window-height' or `window-width' entry in the alist used by | |
6650 | `display-buffer'. Otherwise, this value is handled like nil. | |
8e17c9ba MR |
6651 | |
6652 | `temp-buffer' means that splitting a window for displaying a temporary | |
6653 | buffer always makes a new parent window. Otherwise, this value is | |
6654 | handled like nil. | |
6655 | ||
8e17c9ba MR |
6656 | `display-buffer' means that splitting a window for displaying a buffer |
6657 | always makes a new parent window. Since temporary buffers are | |
6658 | displayed by the function `display-buffer', this value is stronger | |
6659 | than `temp-buffer'. Splitting a window for other purpose makes a | |
6660 | new parent window only if needed. | |
6661 | ||
6662 | t means that splitting a window always creates a new parent window. If | |
6663 | all splits behave this way, each frame's window tree is a binary | |
6664 | tree and every window but the frame's root window has exactly one | |
6665 | sibling. | |
1a13852e | 6666 | |
8e17c9ba | 6667 | Other values are reserved for future use. */); |
5938d519 | 6668 | Vwindow_combination_limit = Qwindow_size; |
666e158e | 6669 | |
6a6ee00d MR |
6670 | DEFVAR_LISP ("window-persistent-parameters", Vwindow_persistent_parameters, |
6671 | doc: /* Alist of persistent window parameters. | |
34a02f46 MR |
6672 | This alist specifies which window parameters shall get saved by |
6673 | `current-window-configuration' and `window-state-get' and subsequently | |
6674 | restored to their previous values by `set-window-configuration' and | |
6675 | `window-state-put'. | |
6a6ee00d MR |
6676 | |
6677 | The car of each entry of this alist is the symbol specifying the | |
6678 | parameter. The cdr is one of the following: | |
6679 | ||
34a02f46 MR |
6680 | nil means the parameter is neither saved by `window-state-get' nor by |
6681 | `current-window-configuration'. | |
6a6ee00d | 6682 | |
34a02f46 MR |
6683 | t means the parameter is saved by `current-window-configuration' and, |
6684 | provided its WRITABLE argument is nil, by `window-state-get'. | |
6a6ee00d | 6685 | |
34a02f46 MR |
6686 | The symbol `writable' means the parameter is saved unconditionally by |
6687 | both `current-window-configuration' and `window-state-get'. Do not use | |
6688 | this value for parameters without read syntax (like windows or frames). | |
6a6ee00d MR |
6689 | |
6690 | Parameters not saved by `current-window-configuration' or | |
6691 | `window-state-get' are left alone by `set-window-configuration' | |
6692 | respectively are not installed by `window-state-put'. */); | |
34a02f46 | 6693 | Vwindow_persistent_parameters = list1 (Fcons (Qclone_of, Qt)); |
6a6ee00d | 6694 | |
7ab12479 JB |
6695 | defsubr (&Sselected_window); |
6696 | defsubr (&Sminibuffer_window); | |
6697 | defsubr (&Swindow_minibuffer_p); | |
6698 | defsubr (&Swindowp); | |
52162052 | 6699 | defsubr (&Swindow_valid_p); |
806b4d9b | 6700 | defsubr (&Swindow_live_p); |
727e958e MR |
6701 | defsubr (&Swindow_frame); |
6702 | defsubr (&Sframe_root_window); | |
6703 | defsubr (&Sframe_first_window); | |
6704 | defsubr (&Sframe_selected_window); | |
6705 | defsubr (&Sset_frame_selected_window); | |
7ab12479 | 6706 | defsubr (&Spos_visible_in_window_p); |
536833ab | 6707 | defsubr (&Swindow_line_height); |
7ab12479 | 6708 | defsubr (&Swindow_buffer); |
bf60a96b | 6709 | defsubr (&Swindow_parent); |
d68443dc MR |
6710 | defsubr (&Swindow_top_child); |
6711 | defsubr (&Swindow_left_child); | |
6712 | defsubr (&Swindow_next_sibling); | |
6713 | defsubr (&Swindow_prev_sibling); | |
b6f67890 MR |
6714 | defsubr (&Swindow_combination_limit); |
6715 | defsubr (&Sset_window_combination_limit); | |
abde8f8c MR |
6716 | defsubr (&Swindow_use_time); |
6717 | defsubr (&Swindow_top_line); | |
6718 | defsubr (&Swindow_left_column); | |
105216ed CY |
6719 | defsubr (&Swindow_total_height); |
6720 | defsubr (&Swindow_total_width); | |
496e208e MR |
6721 | defsubr (&Swindow_normal_size); |
6722 | defsubr (&Swindow_new_total); | |
6723 | defsubr (&Swindow_new_normal); | |
6724 | defsubr (&Sset_window_new_total); | |
6725 | defsubr (&Sset_window_new_normal); | |
d615d6d2 | 6726 | defsubr (&Swindow_resize_apply); |
105216ed CY |
6727 | defsubr (&Swindow_body_height); |
6728 | defsubr (&Swindow_body_width); | |
7ab12479 JB |
6729 | defsubr (&Swindow_hscroll); |
6730 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
6731 | defsubr (&Swindow_redisplay_end_trigger); |
6732 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 6733 | defsubr (&Swindow_edges); |
c99a9eb3 | 6734 | defsubr (&Swindow_pixel_edges); |
9d5405ec | 6735 | defsubr (&Swindow_absolute_pixel_edges); |
c99a9eb3 RS |
6736 | defsubr (&Swindow_inside_edges); |
6737 | defsubr (&Swindow_inside_pixel_edges); | |
9d5405ec | 6738 | defsubr (&Swindow_inside_absolute_pixel_edges); |
d5783c40 JB |
6739 | defsubr (&Scoordinates_in_window_p); |
6740 | defsubr (&Swindow_at); | |
7ab12479 JB |
6741 | defsubr (&Swindow_point); |
6742 | defsubr (&Swindow_start); | |
6743 | defsubr (&Swindow_end); | |
6744 | defsubr (&Sset_window_point); | |
6745 | defsubr (&Sset_window_start); | |
6746 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 6747 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
6748 | defsubr (&Swindow_display_table); |
6749 | defsubr (&Sset_window_display_table); | |
6750 | defsubr (&Snext_window); | |
6751 | defsubr (&Sprevious_window); | |
7ab12479 | 6752 | defsubr (&Sget_buffer_window); |
1a13852e MR |
6753 | defsubr (&Sdelete_other_windows_internal); |
6754 | defsubr (&Sdelete_window_internal); | |
6755 | defsubr (&Sresize_mini_window_internal); | |
7ab12479 | 6756 | defsubr (&Sset_window_buffer); |
1a13852e | 6757 | defsubr (&Srun_window_configuration_change_hook); |
7ab12479 | 6758 | defsubr (&Sselect_window); |
6b61353c | 6759 | defsubr (&Sforce_window_update); |
1a13852e | 6760 | defsubr (&Ssplit_window_internal); |
7ab12479 JB |
6761 | defsubr (&Sscroll_up); |
6762 | defsubr (&Sscroll_down); | |
6763 | defsubr (&Sscroll_left); | |
6764 | defsubr (&Sscroll_right); | |
ccd0664b | 6765 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 6766 | defsubr (&Sscroll_other_window); |
fa832261 | 6767 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 6768 | defsubr (&Srecenter); |
81fe0836 | 6769 | defsubr (&Swindow_text_height); |
7ab12479 JB |
6770 | defsubr (&Smove_to_window_line); |
6771 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 6772 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
6773 | defsubr (&Sset_window_configuration); |
6774 | defsubr (&Scurrent_window_configuration); | |
5500c422 GM |
6775 | defsubr (&Sset_window_margins); |
6776 | defsubr (&Swindow_margins); | |
949cf20f KS |
6777 | defsubr (&Sset_window_fringes); |
6778 | defsubr (&Swindow_fringes); | |
6779 | defsubr (&Sset_window_scroll_bars); | |
6780 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
6781 | defsubr (&Swindow_vscroll); |
6782 | defsubr (&Sset_window_vscroll); | |
2f8274be | 6783 | defsubr (&Scompare_window_configurations); |
67492200 | 6784 | defsubr (&Swindow_list); |
abde8f8c | 6785 | defsubr (&Swindow_list_1); |
496e208e MR |
6786 | defsubr (&Swindow_prev_buffers); |
6787 | defsubr (&Sset_window_prev_buffers); | |
6788 | defsubr (&Swindow_next_buffers); | |
6789 | defsubr (&Sset_window_next_buffers); | |
cfbb2395 JB |
6790 | defsubr (&Swindow_parameters); |
6791 | defsubr (&Swindow_parameter); | |
6792 | defsubr (&Sset_window_parameter); | |
7ab12479 JB |
6793 | } |
6794 | ||
dfcf069d | 6795 | void |
971de7fb | 6796 | keys_of_window (void) |
7ab12479 | 6797 | { |
7ab12479 JB |
6798 | initial_define_key (control_x_map, '<', "scroll-left"); |
6799 | initial_define_key (control_x_map, '>', "scroll-right"); | |
6800 | ||
32129746 | 6801 | initial_define_key (global_map, Ctl ('V'), "scroll-up-command"); |
7ab12479 | 6802 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); |
32129746 | 6803 | initial_define_key (meta_map, 'v', "scroll-down-command"); |
7ab12479 | 6804 | } |