Commit | Line | Data |
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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
ba318903 | 3 | Copyright (C) 1985-1987, 1993-1998, 2000-2014 Free Software |
ab422c4d | 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" |
73bfe891 | 30 | #include "menu.h" |
44fa5b1e | 31 | #include "frame.h" |
7ab12479 JB |
32 | #include "window.h" |
33 | #include "commands.h" | |
34 | #include "indent.h" | |
35 | #include "termchar.h" | |
36 | #include "disptab.h" | |
dfcf069d | 37 | #include "dispextern.h" |
5500c422 GM |
38 | #include "blockinput.h" |
39 | #include "intervals.h" | |
de509a60 | 40 | #include "termhooks.h" /* For FRAME_TERMINAL. */ |
66738305 DA |
41 | #ifdef HAVE_WINDOW_SYSTEM |
42 | #include TERM_HEADER | |
43 | #endif /* HAVE_WINDOW_SYSTEM */ | |
1e3c8885 EZ |
44 | #ifdef MSDOS |
45 | #include "msdos.h" | |
46 | #endif | |
5500c422 | 47 | |
b52d6985 PE |
48 | Lisp_Object Qwindowp, Qwindow_live_p; |
49 | static Lisp_Object Qwindow_valid_p; | |
84575e67 PE |
50 | static Lisp_Object Qwindow_configuration_p; |
51 | static Lisp_Object Qrecord_window_buffer; | |
9397e56f | 52 | static Lisp_Object Qwindow_deletable_p, Qdelete_window, Qdisplay_buffer; |
b9e809c2 | 53 | static Lisp_Object Qreplace_buffer_in_windows, Qget_mru_window; |
5386012d | 54 | static Lisp_Object Qwindow_resize_root_window, Qwindow_resize_root_window_vertically; |
880e6158 | 55 | static Lisp_Object Qwindow_pixel_to_total; |
955cbe7b | 56 | static Lisp_Object Qscroll_up, Qscroll_down, Qscroll_command; |
5938d519 | 57 | static Lisp_Object Qsafe, Qabove, Qbelow, Qwindow_size, Qclone_of; |
6cb4da45 | 58 | static Lisp_Object Qfloor, Qceiling; |
63032a0e | 59 | static Lisp_Object Qwindow_point_insertion_type; |
b9e809c2 | 60 | |
f57e2426 | 61 | static int displayed_window_lines (struct window *); |
f57e2426 J |
62 | static int count_windows (struct window *); |
63 | static int get_leaf_windows (struct window *, struct window **, int); | |
56b5d5b1 DA |
64 | static void window_scroll (Lisp_Object, EMACS_INT, bool, int); |
65 | static void window_scroll_pixel_based (Lisp_Object, int, bool, int); | |
66 | static void window_scroll_line_based (Lisp_Object, int, bool, int); | |
f57e2426 | 67 | static int add_window_to_list (struct window *, void *); |
f57e2426 J |
68 | static Lisp_Object next_window (Lisp_Object, Lisp_Object, |
69 | Lisp_Object, int); | |
70 | static void decode_next_window_args (Lisp_Object *, Lisp_Object *, | |
71 | Lisp_Object *); | |
2f7c71a1 | 72 | static void foreach_window (struct frame *, |
f95464e4 | 73 | int (* fn) (struct window *, void *), |
2f7c71a1 | 74 | void *); |
f57e2426 J |
75 | static int foreach_window_1 (struct window *, |
76 | int (* fn) (struct window *, void *), | |
77 | void *); | |
78 | static Lisp_Object window_list_1 (Lisp_Object, Lisp_Object, Lisp_Object); | |
748fa866 DA |
79 | static int window_resize_check (struct window *, bool); |
80 | static void window_resize_apply (struct window *, bool); | |
880e6158 | 81 | static void window_resize_apply_total (struct window *, bool); |
7c82f3e2 | 82 | static Lisp_Object select_window (Lisp_Object, Lisp_Object, int); |
12384b01 | 83 | static void select_window_1 (Lisp_Object, bool); |
b7354ddf | 84 | |
25554267 DA |
85 | static struct window *set_window_fringes (struct window *, Lisp_Object, |
86 | Lisp_Object, Lisp_Object); | |
87 | static struct window *set_window_margins (struct window *, Lisp_Object, | |
88 | Lisp_Object); | |
89 | static struct window *set_window_scroll_bars (struct window *, Lisp_Object, | |
90 | Lisp_Object, Lisp_Object); | |
91 | static void apply_window_adjustment (struct window *); | |
92 | ||
7ab12479 JB |
93 | /* This is the window in which the terminal's cursor should |
94 | be left when nothing is being done with it. This must | |
95 | always be a leaf window, and its buffer is selected by | |
96 | the top level editing loop at the end of each command. | |
97 | ||
98 | This value is always the same as | |
44fa5b1e | 99 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
100 | Lisp_Object selected_window; |
101 | ||
67492200 GM |
102 | /* A list of all windows for use by next_window and Fwindow_list. |
103 | Functions creating or deleting windows should invalidate this cache | |
104 | by setting it to nil. */ | |
67492200 GM |
105 | Lisp_Object Vwindow_list; |
106 | ||
5500c422 GM |
107 | /* The mini-buffer window of the selected frame. |
108 | Note that you cannot test for mini-bufferness of an arbitrary window | |
109 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 JB |
110 | the selected window. */ |
111 | Lisp_Object minibuf_window; | |
112 | ||
3f49fddc KS |
113 | /* Non-nil means it is the window whose mode line should be |
114 | shown as the selected window when the minibuffer is selected. */ | |
3dbab091 | 115 | Lisp_Object minibuf_selected_window; |
3f49fddc | 116 | |
a58ec57d | 117 | /* Hook run at end of temp_output_buffer_show. */ |
955cbe7b | 118 | static Lisp_Object Qtemp_buffer_show_hook; |
a58ec57d | 119 | |
880e6158 MR |
120 | /* Incremented for each window created. */ |
121 | static int sequence_number; | |
122 | ||
543f5fb1 | 123 | /* Hook to run when window config changes. */ |
eeca6f6f | 124 | static Lisp_Object Qwindow_configuration_change_hook; |
0d384044 | 125 | |
63032a0e | 126 | /* Used by the function window_scroll_pixel_based. */ |
c876b227 | 127 | static int window_scroll_pixel_based_preserve_x; |
66fe93d1 | 128 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 129 | |
c876b227 | 130 | /* Same for window_scroll_line_based. */ |
d311d28c PE |
131 | static EMACS_INT window_scroll_preserve_hpos; |
132 | static EMACS_INT window_scroll_preserve_vpos; | |
f230ecc9 | 133 | \f |
84575e67 PE |
134 | static void |
135 | CHECK_WINDOW_CONFIGURATION (Lisp_Object x) | |
136 | { | |
137 | CHECK_TYPE (WINDOW_CONFIGURATIONP (x), Qwindow_configuration_p, x); | |
138 | } | |
139 | ||
e8c17b81 | 140 | /* These setters are used only in this file, so they can be private. */ |
b0ab8123 | 141 | static void |
e8c17b81 PE |
142 | wset_combination_limit (struct window *w, Lisp_Object val) |
143 | { | |
144 | w->combination_limit = val; | |
145 | } | |
b0ab8123 | 146 | static void |
e8c17b81 PE |
147 | wset_dedicated (struct window *w, Lisp_Object val) |
148 | { | |
149 | w->dedicated = val; | |
150 | } | |
b0ab8123 | 151 | static void |
e8c17b81 PE |
152 | wset_display_table (struct window *w, Lisp_Object val) |
153 | { | |
154 | w->display_table = val; | |
155 | } | |
b0ab8123 | 156 | static void |
e8c17b81 PE |
157 | wset_new_normal (struct window *w, Lisp_Object val) |
158 | { | |
159 | w->new_normal = val; | |
160 | } | |
b0ab8123 | 161 | static void |
e8c17b81 PE |
162 | wset_new_total (struct window *w, Lisp_Object val) |
163 | { | |
164 | w->new_total = val; | |
165 | } | |
b0ab8123 | 166 | static void |
e8c17b81 PE |
167 | wset_normal_cols (struct window *w, Lisp_Object val) |
168 | { | |
169 | w->normal_cols = val; | |
170 | } | |
b0ab8123 | 171 | static void |
e8c17b81 PE |
172 | wset_normal_lines (struct window *w, Lisp_Object val) |
173 | { | |
174 | w->normal_lines = val; | |
175 | } | |
b0ab8123 | 176 | static void |
e8c17b81 PE |
177 | wset_parent (struct window *w, Lisp_Object val) |
178 | { | |
179 | w->parent = val; | |
180 | } | |
b0ab8123 | 181 | static void |
e8c17b81 PE |
182 | wset_pointm (struct window *w, Lisp_Object val) |
183 | { | |
184 | w->pointm = val; | |
185 | } | |
b0ab8123 | 186 | static void |
e8c17b81 PE |
187 | wset_start (struct window *w, Lisp_Object val) |
188 | { | |
189 | w->start = val; | |
190 | } | |
b0ab8123 | 191 | static void |
e8c17b81 PE |
192 | wset_temslot (struct window *w, Lisp_Object val) |
193 | { | |
194 | w->temslot = val; | |
195 | } | |
b0ab8123 | 196 | static void |
e8c17b81 PE |
197 | wset_vertical_scroll_bar_type (struct window *w, Lisp_Object val) |
198 | { | |
199 | w->vertical_scroll_bar_type = val; | |
200 | } | |
b0ab8123 | 201 | static void |
e8c17b81 PE |
202 | wset_window_parameters (struct window *w, Lisp_Object val) |
203 | { | |
204 | w->window_parameters = val; | |
205 | } | |
e74aeda8 DA |
206 | static void |
207 | wset_combination (struct window *w, bool horflag, Lisp_Object val) | |
208 | { | |
209 | /* Since leaf windows never becomes non-leaf, there should | |
210 | be no buffer and markers in start and pointm fields of W. */ | |
211 | eassert (!BUFFERP (w->contents) && NILP (w->start) && NILP (w->pointm)); | |
212 | w->contents = val; | |
213 | /* When an internal window is deleted and VAL is nil, HORFLAG | |
214 | is meaningless. */ | |
215 | if (!NILP (val)) | |
216 | w->horizontal = horflag; | |
217 | } | |
e8c17b81 | 218 | |
170da1ec DA |
219 | /* Nonzero if leaf window W doesn't reflect the actual state |
220 | of displayed buffer due to its text or overlays change. */ | |
221 | ||
222 | bool | |
223 | window_outdated (struct window *w) | |
224 | { | |
225 | struct buffer *b = XBUFFER (w->contents); | |
226 | return (w->last_modified < BUF_MODIFF (b) | |
227 | || w->last_overlay_modified < BUF_OVERLAY_MODIFF (b)); | |
228 | } | |
229 | ||
52162052 MR |
230 | struct window * |
231 | decode_live_window (register Lisp_Object window) | |
f230ecc9 MR |
232 | { |
233 | if (NILP (window)) | |
234 | return XWINDOW (selected_window); | |
c876b227 | 235 | |
f230ecc9 MR |
236 | CHECK_LIVE_WINDOW (window); |
237 | return XWINDOW (window); | |
238 | } | |
239 | ||
b9e9df47 | 240 | struct window * |
f230ecc9 MR |
241 | decode_any_window (register Lisp_Object window) |
242 | { | |
6e5d1c12 CY |
243 | struct window *w; |
244 | ||
f230ecc9 MR |
245 | if (NILP (window)) |
246 | return XWINDOW (selected_window); | |
247 | ||
248 | CHECK_WINDOW (window); | |
6e5d1c12 | 249 | w = XWINDOW (window); |
6e5d1c12 | 250 | return w; |
f230ecc9 | 251 | } |
666e158e | 252 | |
b52d6985 | 253 | static struct window * |
52162052 MR |
254 | decode_valid_window (register Lisp_Object window) |
255 | { | |
256 | struct window *w; | |
257 | ||
258 | if (NILP (window)) | |
259 | return XWINDOW (selected_window); | |
260 | ||
261 | CHECK_VALID_WINDOW (window); | |
262 | w = XWINDOW (window); | |
263 | return w; | |
264 | } | |
265 | ||
98a07056 DA |
266 | /* Called when W's buffer slot is changed. ARG -1 means that W is about to |
267 | cease its buffer, and 1 means that W is about to set up the new one. */ | |
268 | ||
269 | static void | |
270 | adjust_window_count (struct window *w, int arg) | |
271 | { | |
272 | eassert (eabs (arg) == 1); | |
e74aeda8 | 273 | if (BUFFERP (w->contents)) |
98a07056 | 274 | { |
e74aeda8 | 275 | struct buffer *b = XBUFFER (w->contents); |
3f781c75 | 276 | |
98a07056 DA |
277 | if (b->base_buffer) |
278 | b = b->base_buffer; | |
279 | b->window_count += arg; | |
280 | eassert (b->window_count >= 0); | |
422ff52b | 281 | /* These should be recalculated by redisplay code. */ |
9d93ce29 | 282 | w->window_end_valid = 0; |
422ff52b | 283 | w->base_line_pos = 0; |
98a07056 DA |
284 | } |
285 | } | |
286 | ||
287 | /* Set W's buffer slot to VAL and recompute number | |
288 | of windows showing VAL if it is a buffer. */ | |
289 | ||
290 | void | |
291 | wset_buffer (struct window *w, Lisp_Object val) | |
292 | { | |
293 | adjust_window_count (w, -1); | |
e74aeda8 DA |
294 | if (BUFFERP (val)) |
295 | /* Make sure that we do not assign the buffer | |
296 | to an internal window. */ | |
297 | eassert (MARKERP (w->start) && MARKERP (w->pointm)); | |
298 | w->contents = val; | |
98a07056 DA |
299 | adjust_window_count (w, 1); |
300 | } | |
301 | ||
7ab12479 | 302 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, |
f230ecc9 | 303 | doc: /* Return t if OBJECT is a window and nil otherwise. */) |
5842a27b | 304 | (Lisp_Object object) |
7ab12479 | 305 | { |
413430c5 | 306 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
307 | } |
308 | ||
52162052 MR |
309 | DEFUN ("window-valid-p", Fwindow_valid_p, Swindow_valid_p, 1, 1, 0, |
310 | doc: /* Return t if OBJECT is a valid window and nil otherwise. | |
311 | A valid window is either a window that displays a buffer or an internal | |
312 | window. Deleted windows are not live. */) | |
313 | (Lisp_Object object) | |
314 | { | |
315 | return WINDOW_VALID_P (object) ? Qt : Qnil; | |
316 | } | |
317 | ||
806b4d9b | 318 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
f230ecc9 | 319 | doc: /* Return t if OBJECT is a live window and nil otherwise. |
49745b39 CY |
320 | A live window is a window that displays a buffer. |
321 | Internal windows and deleted windows are not live. */) | |
5842a27b | 322 | (Lisp_Object object) |
605be8af | 323 | { |
9e571f49 | 324 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af | 325 | } |
727e958e MR |
326 | \f |
327 | /* Frames and windows. */ | |
89bc0592 | 328 | DEFUN ("window-frame", Fwindow_frame, Swindow_frame, 0, 1, 0, |
727e958e | 329 | doc: /* Return the frame that window WINDOW is on. |
52162052 | 330 | WINDOW must be a valid window and defaults to the selected one. */) |
727e958e MR |
331 | (Lisp_Object window) |
332 | { | |
52162052 | 333 | return decode_valid_window (window)->frame; |
727e958e MR |
334 | } |
335 | ||
336 | DEFUN ("frame-root-window", Fframe_root_window, Sframe_root_window, 0, 1, 0, | |
87e68db4 JB |
337 | doc: /* Return the root window of FRAME-OR-WINDOW. |
338 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
49745b39 CY |
339 | With a frame argument, return that frame's root window. |
340 | With a window argument, return the root window of that window's frame. */) | |
727e958e MR |
341 | (Lisp_Object frame_or_window) |
342 | { | |
343 | Lisp_Object window; | |
344 | ||
345 | if (NILP (frame_or_window)) | |
e69b0960 | 346 | window = SELECTED_FRAME ()->root_window; |
52162052 MR |
347 | else if (WINDOW_VALID_P (frame_or_window)) |
348 | window = XFRAME (XWINDOW (frame_or_window)->frame)->root_window; | |
727e958e MR |
349 | else |
350 | { | |
351 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 352 | window = XFRAME (frame_or_window)->root_window; |
727e958e MR |
353 | } |
354 | ||
355 | return window; | |
356 | } | |
357 | ||
358 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, | |
49745b39 CY |
359 | doc: /* Return the minibuffer window for frame FRAME. |
360 | If FRAME is omitted or nil, it defaults to the selected frame. */) | |
727e958e MR |
361 | (Lisp_Object frame) |
362 | { | |
d9f07150 | 363 | return FRAME_MINIBUF_WINDOW (decode_live_frame (frame)); |
727e958e MR |
364 | } |
365 | ||
366 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, | |
367 | Swindow_minibuffer_p, 0, 1, 0, | |
368 | doc: /* Return non-nil if WINDOW is a minibuffer window. | |
52162052 | 369 | WINDOW must be a valid window and defaults to the selected one. */) |
727e958e MR |
370 | (Lisp_Object window) |
371 | { | |
52162052 | 372 | return MINI_WINDOW_P (decode_valid_window (window)) ? Qt : Qnil; |
727e958e MR |
373 | } |
374 | ||
375 | /* Don't move this to window.el - this must be a safe routine. */ | |
376 | DEFUN ("frame-first-window", Fframe_first_window, Sframe_first_window, 0, 1, 0, | |
87e68db4 JB |
377 | doc: /* Return the topmost, leftmost live window on FRAME-OR-WINDOW. |
378 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
52162052 MR |
379 | Else if FRAME-OR-WINDOW denotes a valid window, return the first window |
380 | of that window's frame. If FRAME-OR-WINDOW denotes a live frame, return | |
727e958e MR |
381 | the first window of that frame. */) |
382 | (Lisp_Object frame_or_window) | |
383 | { | |
384 | Lisp_Object window; | |
385 | ||
386 | if (NILP (frame_or_window)) | |
e69b0960 | 387 | window = SELECTED_FRAME ()->root_window; |
52162052 | 388 | else if (WINDOW_VALID_P (frame_or_window)) |
e69b0960 | 389 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window; |
727e958e MR |
390 | else |
391 | { | |
392 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 393 | window = XFRAME (frame_or_window)->root_window; |
727e958e MR |
394 | } |
395 | ||
e74aeda8 DA |
396 | while (WINDOWP (XWINDOW (window)->contents)) |
397 | window = XWINDOW (window)->contents; | |
727e958e MR |
398 | |
399 | return window; | |
400 | } | |
401 | ||
402 | DEFUN ("frame-selected-window", Fframe_selected_window, | |
403 | Sframe_selected_window, 0, 1, 0, | |
87e68db4 JB |
404 | doc: /* Return the selected window of FRAME-OR-WINDOW. |
405 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
52162052 MR |
406 | Else if FRAME-OR-WINDOW denotes a valid window, return the selected |
407 | window of that window's frame. If FRAME-OR-WINDOW denotes a live frame, | |
408 | return the selected window of that frame. */) | |
727e958e MR |
409 | (Lisp_Object frame_or_window) |
410 | { | |
411 | Lisp_Object window; | |
412 | ||
413 | if (NILP (frame_or_window)) | |
e69b0960 | 414 | window = SELECTED_FRAME ()->selected_window; |
52162052 | 415 | else if (WINDOW_VALID_P (frame_or_window)) |
e69b0960 | 416 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->selected_window; |
727e958e MR |
417 | else |
418 | { | |
419 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 420 | window = XFRAME (frame_or_window)->selected_window; |
727e958e MR |
421 | } |
422 | ||
423 | return window; | |
424 | } | |
425 | ||
426 | DEFUN ("set-frame-selected-window", Fset_frame_selected_window, | |
427 | Sset_frame_selected_window, 2, 3, 0, | |
428 | doc: /* Set selected window of FRAME to WINDOW. | |
429 | FRAME must be a live frame and defaults to the selected one. If FRAME | |
430 | is the selected frame, this makes WINDOW the selected window. Optional | |
431 | argument NORECORD non-nil means to neither change the order of recently | |
432 | selected windows nor the buffer list. WINDOW must denote a live window. | |
433 | Return WINDOW. */) | |
434 | (Lisp_Object frame, Lisp_Object window, Lisp_Object norecord) | |
435 | { | |
436 | if (NILP (frame)) | |
437 | frame = selected_frame; | |
438 | ||
439 | CHECK_LIVE_FRAME (frame); | |
440 | CHECK_LIVE_WINDOW (window); | |
441 | ||
442 | if (! EQ (frame, WINDOW_FRAME (XWINDOW (window)))) | |
443 | error ("In `set-frame-selected-window', WINDOW is not on FRAME"); | |
444 | ||
445 | if (EQ (frame, selected_frame)) | |
446 | return Fselect_window (window, norecord); | |
447 | else | |
f00af5b1 PE |
448 | { |
449 | fset_selected_window (XFRAME (frame), window); | |
450 | return window; | |
451 | } | |
727e958e MR |
452 | } |
453 | ||
454 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
455 | doc: /* Return the selected window. | |
456 | The selected window is the window in which the standard cursor for | |
457 | selected windows appears and to which many commands apply. */) | |
458 | (void) | |
459 | { | |
460 | return selected_window; | |
461 | } | |
462 | ||
9397e56f MR |
463 | int window_select_count; |
464 | ||
727e958e MR |
465 | /* If select_window is called with inhibit_point_swap non-zero it will |
466 | not store point of the old selected window's buffer back into that | |
467 | window's pointm slot. This is needed by Fset_window_configuration to | |
468 | avoid that the display routine is called with selected_window set to | |
469 | Qnil causing a subsequent crash. */ | |
470 | static Lisp_Object | |
471 | select_window (Lisp_Object window, Lisp_Object norecord, int inhibit_point_swap) | |
472 | { | |
473 | register struct window *w; | |
727e958e MR |
474 | struct frame *sf; |
475 | ||
476 | CHECK_LIVE_WINDOW (window); | |
477 | ||
478 | w = XWINDOW (window); | |
727e958e | 479 | |
734fbd86 | 480 | /* Make the selected window's buffer current. */ |
e74aeda8 | 481 | Fset_buffer (w->contents); |
734fbd86 | 482 | |
727e958e | 483 | if (EQ (window, selected_window) && !inhibit_point_swap) |
562c6ee9 SM |
484 | /* `switch-to-buffer' uses (select-window (selected-window)) as a "clever" |
485 | way to call record_buffer from Elisp, so it's important that we call | |
486 | record_buffer before returning here. */ | |
487 | goto record_and_return; | |
727e958e | 488 | |
655ab9a3 | 489 | if (NILP (norecord)) |
22800ae9 SM |
490 | { /* Mark the window for redisplay since the selected-window has |
491 | a different mode-line. */ | |
492 | wset_redisplay (XWINDOW (selected_window)); | |
493 | wset_redisplay (w); | |
494 | } | |
655ab9a3 SM |
495 | else |
496 | redisplay_other_windows (); | |
22800ae9 | 497 | |
727e958e MR |
498 | sf = SELECTED_FRAME (); |
499 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
500 | { | |
f00af5b1 | 501 | fset_selected_window (XFRAME (WINDOW_FRAME (w)), window); |
727e958e MR |
502 | /* Use this rather than Fhandle_switch_frame |
503 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
504 | move around in the state where a minibuffer in a separate | |
505 | frame is active. */ | |
506 | Fselect_frame (WINDOW_FRAME (w), norecord); | |
507 | /* Fselect_frame called us back so we've done all the work already. */ | |
508 | eassert (EQ (window, selected_window)); | |
509 | return window; | |
510 | } | |
511 | else | |
f00af5b1 | 512 | fset_selected_window (sf, window); |
727e958e | 513 | |
1e101a4b | 514 | select_window_1 (window, inhibit_point_swap); |
562c6ee9 | 515 | bset_last_selected_window (XBUFFER (w->contents), window); |
1e101a4b | 516 | |
562c6ee9 | 517 | record_and_return: |
7ffe7ef6 SM |
518 | /* record_buffer can run QUIT, so make sure it is run only after we have |
519 | re-established the invariant between selected_window and selected_frame, | |
520 | otherwise the temporary broken invariant might "escape" (bug#14161). */ | |
521 | if (NILP (norecord)) | |
522 | { | |
523 | w->use_time = ++window_select_count; | |
524 | record_buffer (w->contents); | |
525 | } | |
526 | ||
1e101a4b SM |
527 | return window; |
528 | } | |
529 | ||
530 | /* Select window with a minimum of fuss, i.e. don't record the change anywhere | |
3f781c75 | 531 | (not even for redisplay's benefit), and assume that the window's frame is |
1e101a4b | 532 | already selected. */ |
12384b01 | 533 | static void |
1e101a4b SM |
534 | select_window_1 (Lisp_Object window, bool inhibit_point_swap) |
535 | { | |
734fbd86 MR |
536 | /* Store the old selected window's buffer's point in pointm of the old |
537 | selected window. It belongs to that window, and when the window is | |
538 | not selected, must be in the window. */ | |
727e958e MR |
539 | if (!inhibit_point_swap) |
540 | { | |
1e101a4b | 541 | struct window *ow = XWINDOW (selected_window); |
e74aeda8 DA |
542 | if (BUFFERP (ow->contents)) |
543 | set_marker_both (ow->pointm, ow->contents, | |
544 | BUF_PT (XBUFFER (ow->contents)), | |
545 | BUF_PT_BYTE (XBUFFER (ow->contents))); | |
727e958e MR |
546 | } |
547 | ||
548 | selected_window = window; | |
727e958e MR |
549 | |
550 | /* Go to the point recorded in the window. | |
551 | This is important when the buffer is in more | |
552 | than one window. It also matters when | |
553 | redisplay_window has altered point after scrolling, | |
554 | because it makes the change only in the window. */ | |
032f7451 | 555 | set_point_from_marker (XWINDOW (window)->pointm); |
727e958e MR |
556 | } |
557 | ||
558 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, | |
94900bfe MR |
559 | doc: /* Select WINDOW which must be a live window. |
560 | Also make WINDOW's frame the selected frame and WINDOW that frame's | |
2c6053e8 | 561 | selected window. In addition, make WINDOW's buffer current and set its |
94900bfe MR |
562 | buffer's value of `point' to the value of WINDOW's `window-point'. |
563 | Return WINDOW. | |
727e958e MR |
564 | |
565 | Optional second arg NORECORD non-nil means do not put this buffer at the | |
566 | front of the buffer list and do not make this window the most recently | |
567 | selected one. | |
605be8af | 568 | |
2c6053e8 MR |
569 | Run `buffer-list-update-hook' unless NORECORD is non-nil. Note that |
570 | applications and internal routines often select a window temporarily for | |
571 | various purposes; mostly, to simplify coding. As a rule, such | |
572 | selections should be not recorded and therefore will not pollute | |
573 | `buffer-list-update-hook'. Selections that "really count" are those | |
574 | causing a visible change in the next redisplay of WINDOW's frame and | |
575 | should be always recorded. So if you think of running a function each | |
576 | time a window gets selected put it on `buffer-list-update-hook'. | |
577 | ||
578 | Also note that the main editor command loop sets the current buffer to | |
579 | the buffer of the selected window before each command. */) | |
727e958e MR |
580 | (register Lisp_Object window, Lisp_Object norecord) |
581 | { | |
582 | return select_window (window, norecord, 0); | |
583 | } | |
584 | \f | |
bf60a96b | 585 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
49745b39 CY |
586 | doc: /* Return the buffer displayed in window WINDOW. |
587 | If WINDOW is omitted or nil, it defaults to the selected window. | |
588 | Return nil for an internal window or a deleted window. */) | |
bf60a96b MR |
589 | (Lisp_Object window) |
590 | { | |
e74aeda8 DA |
591 | struct window *w = decode_any_window (window); |
592 | return WINDOW_LEAF_P (w) ? w->contents : Qnil; | |
bf60a96b MR |
593 | } |
594 | ||
595 | DEFUN ("window-parent", Fwindow_parent, Swindow_parent, 0, 1, 0, | |
49745b39 | 596 | doc: /* Return the parent window of window WINDOW. |
52162052 | 597 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 | 598 | Return nil for a window with no parent (e.g. a root window). */) |
bf60a96b MR |
599 | (Lisp_Object window) |
600 | { | |
52162052 | 601 | return decode_valid_window (window)->parent; |
bf60a96b MR |
602 | } |
603 | ||
89bc0592 | 604 | DEFUN ("window-top-child", Fwindow_top_child, Swindow_top_child, 0, 1, 0, |
49745b39 | 605 | doc: /* Return the topmost child window of window WINDOW. |
52162052 | 606 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 CY |
607 | Return nil if WINDOW is a live window (live windows have no children). |
608 | Return nil if WINDOW is an internal window whose children form a | |
609 | horizontal combination. */) | |
bf60a96b MR |
610 | (Lisp_Object window) |
611 | { | |
e74aeda8 DA |
612 | struct window *w = decode_valid_window (window); |
613 | return WINDOW_VERTICAL_COMBINATION_P (w) ? w->contents : Qnil; | |
bf60a96b MR |
614 | } |
615 | ||
89bc0592 | 616 | DEFUN ("window-left-child", Fwindow_left_child, Swindow_left_child, 0, 1, 0, |
49745b39 | 617 | doc: /* Return the leftmost child window of window WINDOW. |
52162052 | 618 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 CY |
619 | Return nil if WINDOW is a live window (live windows have no children). |
620 | Return nil if WINDOW is an internal window whose children form a | |
621 | vertical combination. */) | |
bf60a96b MR |
622 | (Lisp_Object window) |
623 | { | |
e74aeda8 DA |
624 | struct window *w = decode_valid_window (window); |
625 | return WINDOW_HORIZONTAL_COMBINATION_P (w) ? w->contents : Qnil; | |
bf60a96b MR |
626 | } |
627 | ||
d68443dc | 628 | DEFUN ("window-next-sibling", Fwindow_next_sibling, Swindow_next_sibling, 0, 1, 0, |
49745b39 | 629 | doc: /* Return the next sibling window of window WINDOW. |
52162052 | 630 | WINDOW must be a valid window and defaults to the selected one. |
d68443dc | 631 | Return nil if WINDOW has no next sibling. */) |
bf60a96b MR |
632 | (Lisp_Object window) |
633 | { | |
52162052 | 634 | return decode_valid_window (window)->next; |
bf60a96b MR |
635 | } |
636 | ||
d68443dc | 637 | DEFUN ("window-prev-sibling", Fwindow_prev_sibling, Swindow_prev_sibling, 0, 1, 0, |
49745b39 | 638 | doc: /* Return the previous sibling window of window WINDOW. |
52162052 | 639 | WINDOW must be a valid window and defaults to the selected one. |
d68443dc | 640 | Return nil if WINDOW has no previous sibling. */) |
bf60a96b MR |
641 | (Lisp_Object window) |
642 | { | |
52162052 | 643 | return decode_valid_window (window)->prev; |
bf60a96b | 644 | } |
67492200 | 645 | |
72f94d4b | 646 | DEFUN ("window-combination-limit", Fwindow_combination_limit, Swindow_combination_limit, 1, 1, 0, |
b6f67890 | 647 | doc: /* Return combination limit of window WINDOW. |
095d384d | 648 | WINDOW must be a valid window used in horizontal or vertical combination. |
be7f5545 | 649 | If the return value is nil, child windows of WINDOW can be recombined with |
b6f67890 | 650 | WINDOW's siblings. A return value of t means that child windows of |
095d384d | 651 | WINDOW are never \(re-)combined with WINDOW's siblings. */) |
496e208e | 652 | (Lisp_Object window) |
7ab12479 | 653 | { |
095d384d DA |
654 | struct window *w; |
655 | ||
72f94d4b | 656 | CHECK_VALID_WINDOW (window); |
095d384d | 657 | w = XWINDOW (window); |
e74aeda8 | 658 | if (WINDOW_LEAF_P (w)) |
095d384d | 659 | error ("Combination limit is meaningful for internal windows only"); |
e74aeda8 | 660 | return w->combination_limit; |
7ab12479 | 661 | } |
53bb6b99 | 662 | |
b6f67890 | 663 | DEFUN ("set-window-combination-limit", Fset_window_combination_limit, Sset_window_combination_limit, 2, 2, 0, |
d2999b1a | 664 | doc: /* Set combination limit of window WINDOW to LIMIT; return LIMIT. |
095d384d | 665 | WINDOW must be a valid window used in horizontal or vertical combination. |
8e17c9ba MR |
666 | If LIMIT is nil, child windows of WINDOW can be recombined with WINDOW's |
667 | siblings. LIMIT t means that child windows of WINDOW are never | |
668 | \(re-)combined with WINDOW's siblings. Other values are reserved for | |
095d384d | 669 | future use. */) |
d2999b1a | 670 | (Lisp_Object window, Lisp_Object limit) |
b3a10345 | 671 | { |
095d384d DA |
672 | struct window *w; |
673 | ||
674 | CHECK_VALID_WINDOW (window); | |
675 | w = XWINDOW (window); | |
e74aeda8 | 676 | if (WINDOW_LEAF_P (w)) |
095d384d DA |
677 | error ("Combination limit is meaningful for internal windows only"); |
678 | wset_combination_limit (w, limit); | |
e8c17b81 | 679 | return limit; |
496e208e | 680 | } |
7bbc67d2 | 681 | |
496e208e | 682 | DEFUN ("window-use-time", Fwindow_use_time, Swindow_use_time, 0, 1, 0, |
49745b39 | 683 | doc: /* Return the use time of window WINDOW. |
52162052 | 684 | WINDOW must be a live window and defaults to the selected one. |
49745b39 CY |
685 | The window with the highest use time is the most recently selected |
686 | one. The window with the lowest use time is the least recently | |
687 | selected one. */) | |
496e208e MR |
688 | (Lisp_Object window) |
689 | { | |
52162052 | 690 | return make_number (decode_live_window (window)->use_time); |
496e208e | 691 | } |
abde8f8c | 692 | \f |
880e6158 | 693 | DEFUN ("window-pixel-width", Fwindow_pixel_width, Swindow_pixel_width, 0, 1, 0, |
6cb4da45 | 694 | doc: /* Return the width of window WINDOW in pixels. |
880e6158 MR |
695 | WINDOW must be a valid window and defaults to the selected one. |
696 | ||
697 | The return value includes the fringes and margins of WINDOW as well as | |
698 | any vertical dividers or scroll bars belonging to WINDOW. If WINDOW is | |
699 | an internal window, its pixel width is the width of the screen areas | |
700 | spanned by its children. */) | |
701 | (Lisp_Object window) | |
702 | { | |
703 | return make_number (decode_valid_window (window)->pixel_width); | |
704 | } | |
705 | ||
706 | DEFUN ("window-pixel-height", Fwindow_pixel_height, Swindow_pixel_height, 0, 1, 0, | |
6cb4da45 | 707 | doc: /* Return the height of window WINDOW in pixels. |
880e6158 MR |
708 | WINDOW must be a valid window and defaults to the selected one. |
709 | ||
e1a2cb1c MR |
710 | The return value includes the mode line and header line and the bottom |
711 | divider, if any. If WINDOW is an internal window, its pixel height is | |
712 | the height of the screen areas spanned by its children. */) | |
880e6158 MR |
713 | (Lisp_Object window) |
714 | { | |
715 | return make_number (decode_valid_window (window)->pixel_height); | |
716 | } | |
717 | ||
6cb4da45 MR |
718 | DEFUN ("window-total-height", Fwindow_total_height, Swindow_total_height, 0, 2, 0, |
719 | doc: /* Return the height of window WINDOW in lines. | |
52162052 | 720 | WINDOW must be a valid window and defaults to the selected one. |
b3a10345 | 721 | |
6cb4da45 MR |
722 | The return value includes the heights of WINDOW's mode and header line |
723 | and its bottom divider, if any. If WINDOW is an internal window, the | |
724 | total height is the height of the screen areas spanned by its children. | |
536833ab | 725 | |
6cb4da45 MR |
726 | If WINDOW's pixel height is not an integral multiple of its frame's |
727 | character height, the number of lines occupied by WINDOW is rounded | |
728 | internally. This is done in a way such that, if WINDOW is a parent | |
729 | window, the sum of the total heights of all its children internally | |
730 | equals the total height of WINDOW. | |
731 | ||
732 | If the optional argument ROUND is `ceiling', return the smallest integer | |
733 | larger than WINDOW's pixel height divided by the character height of | |
734 | WINDOW's frame. ROUND `floor' means to return the largest integer | |
735 | smaller than WINDOW's pixel height divided by the character height of | |
736 | WINDOW's frame. Any other value of ROUND means to return the internal | |
737 | total height of WINDOW. */) | |
738 | (Lisp_Object window, Lisp_Object round) | |
496e208e | 739 | { |
6cb4da45 MR |
740 | struct window *w = decode_valid_window (window); |
741 | ||
742 | if (! EQ (round, Qfloor) && ! EQ (round, Qceiling)) | |
743 | return make_number (w->total_lines); | |
744 | else | |
745 | { | |
746 | int unit = FRAME_LINE_HEIGHT (WINDOW_XFRAME (w)); | |
747 | ||
748 | return make_number (EQ (round, Qceiling) | |
749 | ? ((w->pixel_height + unit - 1) /unit) | |
750 | : (w->pixel_height / unit)); | |
751 | } | |
105216ed | 752 | } |
536833ab | 753 | |
6cb4da45 MR |
754 | DEFUN ("window-total-width", Fwindow_total_width, Swindow_total_width, 0, 2, 0, |
755 | doc: /* Return the total width of window WINDOW in columns. | |
52162052 | 756 | WINDOW must be a valid window and defaults to the selected one. |
b3a10345 | 757 | |
6cb4da45 MR |
758 | The return value includes the widths of WINDOW's fringes, margins, |
759 | scroll bars and its right divider, if any. If WINDOW is an internal | |
760 | window, the total width is the width of the screen areas spanned by its | |
761 | children. | |
762 | ||
763 | If WINDOW's pixel width is not an integral multiple of its frame's | |
764 | character width, the number of lines occupied by WINDOW is rounded | |
765 | internally. This is done in a way such that, if WINDOW is a parent | |
766 | window, the sum of the total widths of all its children internally | |
767 | equals the total width of WINDOW. | |
768 | ||
769 | If the optional argument ROUND is `ceiling', return the smallest integer | |
770 | larger than WINDOW's pixel width divided by the character width of | |
771 | WINDOW's frame. ROUND `floor' means to return the largest integer | |
772 | smaller than WINDOW's pixel width divided by the character width of | |
773 | WINDOW's frame. Any other value of ROUND means to return the internal | |
774 | total width of WINDOW. */) | |
775 | (Lisp_Object window, Lisp_Object round) | |
496e208e | 776 | { |
6cb4da45 MR |
777 | struct window *w = decode_valid_window (window); |
778 | ||
779 | if (! EQ (round, Qfloor) && ! EQ (round, Qceiling)) | |
780 | return make_number (w->total_cols); | |
781 | else | |
782 | { | |
783 | int unit = FRAME_COLUMN_WIDTH (WINDOW_XFRAME (w)); | |
784 | ||
785 | return make_number (EQ (round, Qceiling) | |
786 | ? ((w->pixel_width + unit - 1) /unit) | |
787 | : (w->pixel_width / unit)); | |
788 | } | |
abde8f8c | 789 | } |
b3a10345 | 790 | |
496e208e | 791 | DEFUN ("window-new-total", Fwindow_new_total, Swindow_new_total, 0, 1, 0, |
49745b39 | 792 | doc: /* Return the new total size of window WINDOW. |
52162052 | 793 | WINDOW must be a valid window and defaults to the selected one. */) |
496e208e MR |
794 | (Lisp_Object window) |
795 | { | |
52162052 | 796 | return decode_valid_window (window)->new_total; |
496e208e MR |
797 | } |
798 | ||
799 | DEFUN ("window-normal-size", Fwindow_normal_size, Swindow_normal_size, 0, 2, 0, | |
49745b39 | 800 | doc: /* Return the normal height of window WINDOW. |
52162052 | 801 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 | 802 | If HORIZONTAL is non-nil, return the normal width of WINDOW. */) |
496e208e MR |
803 | (Lisp_Object window, Lisp_Object horizontal) |
804 | { | |
52162052 | 805 | struct window *w = decode_valid_window (window); |
d3d50620 DA |
806 | |
807 | return NILP (horizontal) ? w->normal_lines : w->normal_cols; | |
496e208e MR |
808 | } |
809 | ||
810 | DEFUN ("window-new-normal", Fwindow_new_normal, Swindow_new_normal, 0, 1, 0, | |
49745b39 | 811 | doc: /* Return new normal size of window WINDOW. |
52162052 | 812 | WINDOW must be a valid window and defaults to the selected one. */) |
496e208e MR |
813 | (Lisp_Object window) |
814 | { | |
52162052 | 815 | return decode_valid_window (window)->new_normal; |
496e208e MR |
816 | } |
817 | ||
880e6158 MR |
818 | DEFUN ("window-new-pixel", Fwindow_new_pixel, Swindow_new_pixel, 0, 1, 0, |
819 | doc: /* Return new pixel size of window WINDOW. | |
820 | WINDOW must be a valid window and defaults to the selected one. */) | |
821 | (Lisp_Object window) | |
822 | { | |
823 | return decode_valid_window (window)->new_pixel; | |
824 | } | |
825 | ||
826 | DEFUN ("window-pixel-left", Fwindow_pixel_left, Swindow_pixel_left, 0, 1, 0, | |
827 | doc: /* Return left pixel edge of window WINDOW. | |
828 | WINDOW must be a valid window and defaults to the selected one. */) | |
829 | (Lisp_Object window) | |
830 | { | |
831 | return make_number (decode_valid_window (window)->pixel_left); | |
832 | } | |
833 | ||
834 | DEFUN ("window-pixel-top", Fwindow_pixel_top, Swindow_pixel_top, 0, 1, 0, | |
835 | doc: /* Return top pixel edge of window WINDOW. | |
836 | WINDOW must be a valid window and defaults to the selected one. */) | |
837 | (Lisp_Object window) | |
838 | { | |
839 | return make_number (decode_valid_window (window)->pixel_top); | |
840 | } | |
841 | ||
abde8f8c | 842 | DEFUN ("window-left-column", Fwindow_left_column, Swindow_left_column, 0, 1, 0, |
49745b39 | 843 | doc: /* Return left column of window WINDOW. |
105216ed CY |
844 | This is the distance, in columns, between the left edge of WINDOW and |
845 | the left edge of the frame's window area. For instance, the return | |
846 | value is 0 if there is no window to the left of WINDOW. | |
847 | ||
52162052 | 848 | WINDOW must be a valid window and defaults to the selected one. */) |
abde8f8c MR |
849 | (Lisp_Object window) |
850 | { | |
5f24fa51 | 851 | return make_number (decode_valid_window (window)->left_col); |
abde8f8c MR |
852 | } |
853 | ||
854 | DEFUN ("window-top-line", Fwindow_top_line, Swindow_top_line, 0, 1, 0, | |
49745b39 | 855 | doc: /* Return top line of window WINDOW. |
105216ed CY |
856 | This is the distance, in lines, between the top of WINDOW and the top |
857 | of the frame's window area. For instance, the return value is 0 if | |
858 | there is no window above WINDOW. | |
859 | ||
52162052 | 860 | WINDOW must be a valid window and defaults to the selected one. */) |
abde8f8c MR |
861 | (Lisp_Object window) |
862 | { | |
5f24fa51 | 863 | return make_number (decode_valid_window (window)->top_line); |
abde8f8c MR |
864 | } |
865 | ||
6cb4da45 MR |
866 | /* Return the number of lines/pixels of W's body. Don't count any mode |
867 | or header line or horizontal divider of W. Rounds down to nearest | |
868 | integer when not working pixelwise. */ | |
46a4ce9e | 869 | static int |
880e6158 | 870 | window_body_height (struct window *w, bool pixelwise) |
abde8f8c | 871 | { |
6cb4da45 | 872 | int height = (w->pixel_height |
880e6158 | 873 | - WINDOW_HEADER_LINE_HEIGHT (w) |
6cb4da45 MR |
874 | - WINDOW_MODE_LINE_HEIGHT (w) |
875 | - WINDOW_BOTTOM_DIVIDER_WIDTH (w)); | |
abde8f8c | 876 | |
dc0e4c48 MR |
877 | /* Don't return a negative value. */ |
878 | return max (pixelwise | |
879 | ? height | |
880 | : height / FRAME_LINE_HEIGHT (WINDOW_XFRAME (w)), | |
881 | 0); | |
abde8f8c MR |
882 | } |
883 | ||
6cb4da45 MR |
884 | /* Return the number of columns/pixels of W's body. Don't count columns |
885 | occupied by the scroll bar or the divider/vertical bar separating W | |
886 | from its right sibling or margins. On window-systems don't count | |
887 | fringes either. Round down to nearest integer when not working | |
888 | pixelwise. */ | |
abde8f8c | 889 | int |
880e6158 | 890 | window_body_width (struct window *w, bool pixelwise) |
abde8f8c MR |
891 | { |
892 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
abde8f8c | 893 | |
6cb4da45 MR |
894 | int width = (w->pixel_width |
895 | - WINDOW_RIGHT_DIVIDER_WIDTH (w) | |
896 | - (WINDOW_HAS_VERTICAL_SCROLL_BAR (w) | |
897 | ? WINDOW_SCROLL_BAR_AREA_WIDTH (w) | |
898 | : ((!FRAME_WINDOW_P (f) | |
899 | && !WINDOW_RIGHTMOST_P (w) | |
900 | && !WINDOW_RIGHT_DIVIDER_WIDTH (w)) | |
901 | /* A vertical bar is either 1 or 0. */ | |
902 | ? 1 : 0)) | |
880e6158 MR |
903 | - WINDOW_MARGINS_WIDTH (w) |
904 | - (FRAME_WINDOW_P (f) | |
905 | ? WINDOW_FRINGES_WIDTH (w) | |
906 | : 0)); | |
880e6158 | 907 | |
dc0e4c48 MR |
908 | /* Don't return a negative value. */ |
909 | return max (pixelwise | |
910 | ? width | |
911 | : width / FRAME_COLUMN_WIDTH (WINDOW_XFRAME (w)), | |
912 | 0); | |
880e6158 MR |
913 | } |
914 | ||
915 | DEFUN ("window-body-height", Fwindow_body_height, Swindow_body_height, 0, 2, 0, | |
6cb4da45 MR |
916 | doc: /* Return the height of WINDOW's text area. |
917 | WINDOW must be a live window and defaults to the selected one. Optional | |
918 | argument PIXELWISE non-nil means return the height of WINDOW's text area | |
919 | in pixels. The return value does not include the mode line or header | |
920 | line or any horizontal divider. | |
921 | ||
922 | If PIXELWISE is nil, return the largest integer smaller than WINDOW's | |
923 | pixel height divided by the character height of WINDOW's frame. This | |
924 | means that if a line at the bottom of the text area is only partially | |
925 | visible, that line is not counted. */) | |
880e6158 MR |
926 | (Lisp_Object window, Lisp_Object pixelwise) |
927 | { | |
928 | return make_number (window_body_height (decode_live_window (window), | |
929 | NILP (pixelwise) ? 0 : 1)); | |
abde8f8c MR |
930 | } |
931 | ||
880e6158 | 932 | DEFUN ("window-body-width", Fwindow_body_width, Swindow_body_width, 0, 2, 0, |
6cb4da45 MR |
933 | doc: /* Return the width of WINDOW's text area. |
934 | WINDOW must be a live window and defaults to the selected one. Optional | |
935 | argument PIXELWISE non-nil means return the width in pixels. The return | |
936 | value does not include any vertical dividers, fringes or marginal areas, | |
937 | or scroll bars. | |
938 | ||
939 | If PIXELWISE is nil, return the largest integer smaller than WINDOW's | |
940 | pixel width divided by the character width of WINDOW's frame. This | |
941 | means that if a column at the right of the text area is only partially | |
942 | visible, that column is not counted. */) | |
880e6158 MR |
943 | (Lisp_Object window, Lisp_Object pixelwise) |
944 | { | |
945 | return make_number (window_body_width (decode_live_window (window), | |
946 | NILP (pixelwise) ? 0 : 1)); | |
947 | } | |
948 | ||
949 | DEFUN ("window-mode-line-height", Fwindow_mode_line_height, | |
950 | Swindow_mode_line_height, 0, 1, 0, | |
6cb4da45 | 951 | doc: /* Return the height in pixels of WINDOW's mode-line. |
880e6158 | 952 | WINDOW must be a live window and defaults to the selected one. */) |
105216ed | 953 | (Lisp_Object window) |
abde8f8c | 954 | { |
880e6158 | 955 | return (make_number (WINDOW_MODE_LINE_HEIGHT (decode_live_window (window)))); |
105216ed | 956 | } |
abde8f8c | 957 | |
880e6158 MR |
958 | DEFUN ("window-header-line-height", Fwindow_header_line_height, |
959 | Swindow_header_line_height, 0, 1, 0, | |
6cb4da45 | 960 | doc: /* Return the height in pixels of WINDOW's header-line. |
880e6158 MR |
961 | WINDOW must be a live window and defaults to the selected one. */) |
962 | (Lisp_Object window) | |
963 | { | |
964 | return (make_number (WINDOW_HEADER_LINE_HEIGHT (decode_live_window (window)))); | |
965 | } | |
105216ed | 966 | |
880e6158 MR |
967 | DEFUN ("window-right-divider-width", Fwindow_right_divider_width, |
968 | Swindow_right_divider_width, 0, 1, 0, | |
6cb4da45 | 969 | doc: /* Return the width in pixels of WINDOW's right divider. |
880e6158 | 970 | WINDOW must be a live window and defaults to the selected one. */) |
105216ed CY |
971 | (Lisp_Object window) |
972 | { | |
880e6158 MR |
973 | return (make_number (WINDOW_RIGHT_DIVIDER_WIDTH (decode_live_window (window)))); |
974 | } | |
975 | ||
976 | DEFUN ("window-bottom-divider-width", Fwindow_bottom_divider_width, | |
977 | Swindow_bottom_divider_width, 0, 1, 0, | |
6cb4da45 | 978 | doc: /* Return the width in pixels of WINDOW's bottom divider. |
880e6158 MR |
979 | WINDOW must be a live window and defaults to the selected one. */) |
980 | (Lisp_Object window) | |
981 | { | |
982 | return (make_number (WINDOW_BOTTOM_DIVIDER_WIDTH (decode_live_window (window)))); | |
abde8f8c | 983 | } |
536833ab | 984 | |
8dd3e94f MR |
985 | DEFUN ("window-scroll-bar-width", Fwindow_scroll_bar_width, |
986 | Swindow_scroll_bar_width, 0, 1, 0, | |
987 | doc: /* Return the width in pixels of WINDOW's vertical scrollbar. | |
988 | WINDOW must be a live window and defaults to the selected one. */) | |
989 | (Lisp_Object window) | |
990 | { | |
991 | return (make_number (WINDOW_SCROLL_BAR_AREA_WIDTH (decode_live_window (window)))); | |
992 | } | |
993 | ||
7ab12479 | 994 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 | 995 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
496e208e | 996 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 997 | (Lisp_Object window) |
7ab12479 | 998 | { |
52162052 | 999 | return make_number (decode_live_window (window)->hscroll); |
7ab12479 JB |
1000 | } |
1001 | ||
24a212eb PE |
1002 | /* Set W's horizontal scroll amount to HSCROLL clipped to a reasonable |
1003 | range, returning the new amount as a fixnum. */ | |
1004 | static Lisp_Object | |
1005 | set_window_hscroll (struct window *w, EMACS_INT hscroll) | |
1006 | { | |
4e71fd89 PE |
1007 | /* Horizontal scrolling has problems with large scroll amounts. |
1008 | It's too slow with long lines, and even with small lines the | |
1009 | display can be messed up. For now, though, impose only the limits | |
1010 | required by the internal representation: horizontal scrolling must | |
1011 | fit in fixnum (since it's visible to Elisp) and into ptrdiff_t | |
1012 | (since it's stored in a ptrdiff_t). */ | |
1013 | ptrdiff_t hscroll_max = min (MOST_POSITIVE_FIXNUM, PTRDIFF_MAX); | |
1014 | ptrdiff_t new_hscroll = clip_to_bounds (0, hscroll, hscroll_max); | |
24a212eb PE |
1015 | |
1016 | /* Prevent redisplay shortcuts when changing the hscroll. */ | |
1017 | if (w->hscroll != new_hscroll) | |
e74aeda8 | 1018 | XBUFFER (w->contents)->prevent_redisplay_optimizations_p = 1; |
24a212eb PE |
1019 | |
1020 | w->hscroll = new_hscroll; | |
1021 | return make_number (new_hscroll); | |
1022 | } | |
1023 | ||
7ab12479 | 1024 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, |
fdb82f93 | 1025 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
52162052 | 1026 | WINDOW must be a live window and defaults to the selected one. |
24a212eb PE |
1027 | Clip the number to a reasonable value if out of range. |
1028 | Return the new number. NCOL should be zero or positive. | |
ebadb1e4 EZ |
1029 | |
1030 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 1031 | window so that the location of point moves off-window. */) |
5842a27b | 1032 | (Lisp_Object window, Lisp_Object ncol) |
7ab12479 | 1033 | { |
b7826503 | 1034 | CHECK_NUMBER (ncol); |
89bc0592 | 1035 | return set_window_hscroll (decode_live_window (window), XINT (ncol)); |
7ab12479 JB |
1036 | } |
1037 | ||
190eb263 RS |
1038 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
1039 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 1040 | doc: /* Return WINDOW's redisplay end trigger value. |
52162052 | 1041 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 1042 | See `set-window-redisplay-end-trigger' for more information. */) |
5842a27b | 1043 | (Lisp_Object window) |
190eb263 | 1044 | { |
52162052 | 1045 | return decode_live_window (window)->redisplay_end_trigger; |
190eb263 RS |
1046 | } |
1047 | ||
1048 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
1049 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 | 1050 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
52162052 MR |
1051 | WINDOW must be a live window and defaults to the selected one. VALUE |
1052 | should be a buffer position (typically a marker) or nil. If it is a | |
1053 | buffer position, then if redisplay in WINDOW reaches a position beyond | |
1054 | VALUE, the functions in `redisplay-end-trigger-functions' are called | |
1055 | with two arguments: WINDOW, and the end trigger value. Afterwards the | |
1056 | end-trigger value is reset to nil. */) | |
5842a27b | 1057 | (register Lisp_Object window, Lisp_Object value) |
190eb263 | 1058 | { |
e8c17b81 PE |
1059 | wset_redisplay_end_trigger (decode_live_window (window), value); |
1060 | return value; | |
190eb263 RS |
1061 | } |
1062 | ||
7ab12479 | 1063 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 | 1064 | doc: /* Return a list of the edge coordinates of WINDOW. |
52162052 MR |
1065 | WINDOW must be a valid window and defaults to the selected one. |
1066 | ||
1067 | The returned list has the form (LEFT TOP RIGHT BOTTOM). TOP and BOTTOM | |
1068 | count by lines, and LEFT and RIGHT count by columns, all relative to 0, | |
1069 | 0 at top left corner of frame. | |
1070 | ||
1071 | RIGHT is one more than the rightmost column occupied by WINDOW. BOTTOM | |
1072 | is one more than the bottommost row occupied by WINDOW. The edges | |
1073 | include the space used by WINDOW's scroll bar, display margins, fringes, | |
1074 | header line, and/or mode line. For the edges of just the text area, use | |
1075 | `window-inside-edges'. */) | |
5842a27b | 1076 | (Lisp_Object window) |
7ab12479 | 1077 | { |
52162052 | 1078 | register struct window *w = decode_valid_window (window); |
7ab12479 | 1079 | |
1479c557 PE |
1080 | return list4i (WINDOW_LEFT_EDGE_COL (w), WINDOW_TOP_EDGE_LINE (w), |
1081 | WINDOW_RIGHT_EDGE_COL (w), WINDOW_BOTTOM_EDGE_LINE (w)); | |
7ab12479 JB |
1082 | } |
1083 | ||
c99a9eb3 RS |
1084 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
1085 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
52162052 MR |
1086 | WINDOW must be a valid window and defaults to the selected one. |
1087 | ||
1088 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
1089 | 0, 0 at the top left corner of the frame. | |
b35ac83e CY |
1090 | |
1091 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
1092 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
1093 | The pixel edges include the space used by WINDOW's scroll bar, display | |
1094 | margins, fringes, header line, and/or mode line. For the pixel edges | |
1095 | of just the text area, use `window-inside-pixel-edges'. */) | |
5842a27b | 1096 | (Lisp_Object window) |
c99a9eb3 | 1097 | { |
52162052 | 1098 | register struct window *w = decode_valid_window (window); |
c99a9eb3 | 1099 | |
1479c557 PE |
1100 | return list4i (WINDOW_LEFT_EDGE_X (w), WINDOW_TOP_EDGE_Y (w), |
1101 | WINDOW_RIGHT_EDGE_X (w), WINDOW_BOTTOM_EDGE_Y (w)); | |
c99a9eb3 RS |
1102 | } |
1103 | ||
9d5405ec | 1104 | static void |
5e617bc2 | 1105 | calc_absolute_offset (struct window *w, int *add_x, int *add_y) |
9d5405ec | 1106 | { |
d3d50620 | 1107 | struct frame *f = XFRAME (w->frame); |
9d5405ec J |
1108 | *add_y = f->top_pos; |
1109 | #ifdef FRAME_MENUBAR_HEIGHT | |
1110 | *add_y += FRAME_MENUBAR_HEIGHT (f); | |
1111 | #endif | |
bfeabdc3 JD |
1112 | #ifdef FRAME_TOOLBAR_TOP_HEIGHT |
1113 | *add_y += FRAME_TOOLBAR_TOP_HEIGHT (f); | |
66d13b20 | 1114 | #elif defined (FRAME_TOOLBAR_HEIGHT) |
9d5405ec J |
1115 | *add_y += FRAME_TOOLBAR_HEIGHT (f); |
1116 | #endif | |
1117 | #ifdef FRAME_NS_TITLEBAR_HEIGHT | |
1118 | *add_y += FRAME_NS_TITLEBAR_HEIGHT (f); | |
1119 | #endif | |
1120 | *add_x = f->left_pos; | |
bfeabdc3 JD |
1121 | #ifdef FRAME_TOOLBAR_LEFT_WIDTH |
1122 | *add_x += FRAME_TOOLBAR_LEFT_WIDTH (f); | |
1123 | #endif | |
9d5405ec J |
1124 | } |
1125 | ||
1126 | DEFUN ("window-absolute-pixel-edges", Fwindow_absolute_pixel_edges, | |
1127 | Swindow_absolute_pixel_edges, 0, 1, 0, | |
1128 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
52162052 MR |
1129 | WINDOW must be a valid window and defaults to the selected one. |
1130 | ||
1131 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
1132 | 0, 0 at the top left corner of the display. | |
9d5405ec J |
1133 | |
1134 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
1135 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
1136 | The pixel edges include the space used by WINDOW's scroll bar, display | |
1137 | margins, fringes, header line, and/or mode line. For the pixel edges | |
c49d071a | 1138 | of just the text area, use `window-inside-absolute-pixel-edges'. */) |
5842a27b | 1139 | (Lisp_Object window) |
9d5405ec | 1140 | { |
52162052 | 1141 | register struct window *w = decode_valid_window (window); |
9d5405ec | 1142 | int add_x, add_y; |
89bc0592 | 1143 | |
ed3751c8 | 1144 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec | 1145 | |
1479c557 PE |
1146 | return list4i (WINDOW_LEFT_EDGE_X (w) + add_x, |
1147 | WINDOW_TOP_EDGE_Y (w) + add_y, | |
1148 | WINDOW_RIGHT_EDGE_X (w) + add_x, | |
1149 | WINDOW_BOTTOM_EDGE_Y (w) + add_y); | |
9d5405ec J |
1150 | } |
1151 | ||
c99a9eb3 RS |
1152 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, |
1153 | doc: /* Return a list of the edge coordinates of WINDOW. | |
52162052 MR |
1154 | WINDOW must be a live window and defaults to the selected one. |
1155 | ||
1156 | The returned list has the form (LEFT TOP RIGHT BOTTOM). TOP and BOTTOM | |
1157 | count by lines, and LEFT and RIGHT count by columns, all relative to 0, | |
1158 | 0 at top left corner of frame. | |
b35ac83e CY |
1159 | |
1160 | RIGHT is one more than the rightmost column of WINDOW's text area. | |
52162052 MR |
1161 | BOTTOM is one more than the bottommost row of WINDOW's text area. The |
1162 | inside edges do not include the space used by the WINDOW's scroll bar, | |
1163 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 1164 | (Lisp_Object window) |
c99a9eb3 | 1165 | { |
52162052 | 1166 | register struct window *w = decode_live_window (window); |
c99a9eb3 | 1167 | |
1479c557 PE |
1168 | return list4i ((WINDOW_BOX_LEFT_EDGE_COL (w) |
1169 | + WINDOW_LEFT_MARGIN_COLS (w) | |
1170 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
1171 | (WINDOW_TOP_EDGE_LINE (w) | |
1172 | + WINDOW_HEADER_LINE_LINES (w)), | |
1173 | (WINDOW_BOX_RIGHT_EDGE_COL (w) | |
1174 | - WINDOW_RIGHT_MARGIN_COLS (w) | |
1175 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
1176 | (WINDOW_BOTTOM_EDGE_LINE (w) | |
1177 | - WINDOW_MODE_LINE_LINES (w))); | |
c99a9eb3 RS |
1178 | } |
1179 | ||
1180 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
2fbdc249 | 1181 | doc: /* Return a list of the edge pixel coordinates of WINDOW's text area. |
52162052 MR |
1182 | WINDOW must be a live window and defaults to the selected one. |
1183 | ||
1184 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
1185 | (0,0) at the top left corner of the frame's window area. | |
b35ac83e CY |
1186 | |
1187 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
1188 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
1189 | The inside edges do not include the space used by WINDOW's scroll bar, | |
c99a9eb3 | 1190 | display margins, fringes, header line, and/or mode line. */) |
5842a27b | 1191 | (Lisp_Object window) |
c99a9eb3 | 1192 | { |
52162052 | 1193 | register struct window *w = decode_live_window (window); |
c99a9eb3 | 1194 | |
1479c557 PE |
1195 | return list4i ((WINDOW_BOX_LEFT_EDGE_X (w) |
1196 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
1197 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
1198 | (WINDOW_TOP_EDGE_Y (w) | |
1199 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
1200 | (WINDOW_BOX_RIGHT_EDGE_X (w) | |
1201 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
1202 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
1203 | (WINDOW_BOTTOM_EDGE_Y (w) | |
1204 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
c99a9eb3 RS |
1205 | } |
1206 | ||
9d5405ec J |
1207 | DEFUN ("window-inside-absolute-pixel-edges", |
1208 | Fwindow_inside_absolute_pixel_edges, | |
1209 | Swindow_inside_absolute_pixel_edges, 0, 1, 0, | |
2fbdc249 | 1210 | doc: /* Return a list of the edge pixel coordinates of WINDOW's text area. |
52162052 MR |
1211 | WINDOW must be a live window and defaults to the selected one. |
1212 | ||
1213 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
1214 | (0,0) at the top left corner of the frame's window area. | |
9d5405ec J |
1215 | |
1216 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
1217 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
1218 | The inside edges do not include the space used by WINDOW's scroll bar, | |
1219 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 1220 | (Lisp_Object window) |
9d5405ec | 1221 | { |
52162052 | 1222 | register struct window *w = decode_live_window (window); |
9d5405ec | 1223 | int add_x, add_y; |
89bc0592 | 1224 | |
ed3751c8 | 1225 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec | 1226 | |
1479c557 PE |
1227 | return list4i ((WINDOW_BOX_LEFT_EDGE_X (w) |
1228 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
1229 | + WINDOW_LEFT_FRINGE_WIDTH (w) + add_x), | |
1230 | (WINDOW_TOP_EDGE_Y (w) | |
1231 | + WINDOW_HEADER_LINE_HEIGHT (w) + add_y), | |
1232 | (WINDOW_BOX_RIGHT_EDGE_X (w) | |
1233 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
1234 | - WINDOW_RIGHT_FRINGE_WIDTH (w) + add_x), | |
1235 | (WINDOW_BOTTOM_EDGE_Y (w) | |
1236 | - WINDOW_MODE_LINE_HEIGHT (w) + add_y)); | |
9d5405ec J |
1237 | } |
1238 | ||
9173a8fb | 1239 | /* Test if the character at column X, row Y is within window W. |
341f3858 | 1240 | If it is not, return ON_NOTHING; |
880e6158 MR |
1241 | if it is on the window's vertical divider, return |
1242 | ON_RIGHT_DIVIDER; | |
1243 | if it is on the window's horizontal divider, return | |
1244 | ON_BOTTOM_DIVIDER; | |
9173a8fb | 1245 | if it is in the window's text area, return ON_TEXT; |
341f3858 | 1246 | if it is on the window's modeline, return ON_MODE_LINE; |
d5783c40 | 1247 | if it is on the border between the window and its right sibling, |
880e6158 MR |
1248 | return ON_VERTICAL_BORDER; |
1249 | if it is on a scroll bar, return ON_SCROLL_BAR; | |
341f3858 | 1250 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 1251 | if it is in left or right fringe of the window, |
9173a8fb | 1252 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE; |
49b996e7 | 1253 | if it is in the marginal area to the left/right of the window, |
9173a8fb | 1254 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN. |
5500c422 GM |
1255 | |
1256 | X and Y are frame relative pixel coordinates. */ | |
1257 | ||
7442878f | 1258 | static enum window_part |
9173a8fb | 1259 | coordinates_in_window (register struct window *w, int x, int y) |
d5783c40 | 1260 | { |
b0228ace | 1261 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
7442878f | 1262 | enum window_part part; |
949cf20f | 1263 | int ux = FRAME_COLUMN_WIDTH (f); |
c7b08b0d MR |
1264 | int left_x = WINDOW_LEFT_EDGE_X (w); |
1265 | int right_x = WINDOW_RIGHT_EDGE_X (w); | |
1266 | int top_y = WINDOW_TOP_EDGE_Y (w); | |
1267 | int bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
dad75588 GM |
1268 | /* The width of the area where the vertical line can be dragged. |
1269 | (Between mode lines for instance. */ | |
1270 | int grabbable_width = ux; | |
949cf20f | 1271 | int lmargin_width, rmargin_width, text_left, text_right; |
9173a8fb | 1272 | |
c7b08b0d MR |
1273 | /* Outside any interesting row or column? */ |
1274 | if (y < top_y || y >= bottom_y || x < left_x || x >= right_x) | |
9173a8fb | 1275 | return ON_NOTHING; |
b0228ace | 1276 | |
653b6ea3 MR |
1277 | /* On the horizontal window divider (which prevails the vertical |
1278 | divider)? */ | |
1279 | if (WINDOW_BOTTOM_DIVIDER_WIDTH (w) > 0 | |
1280 | && y >= (bottom_y - WINDOW_BOTTOM_DIVIDER_WIDTH (w)) | |
1281 | && y <= bottom_y) | |
880e6158 | 1282 | return ON_BOTTOM_DIVIDER; |
653b6ea3 MR |
1283 | /* On vertical window divider? */ |
1284 | else if (!WINDOW_RIGHTMOST_P (w) | |
1285 | && WINDOW_RIGHT_DIVIDER_WIDTH (w) > 0 | |
1286 | && x >= right_x - WINDOW_RIGHT_DIVIDER_WIDTH (w) | |
1287 | && x <= right_x) | |
1288 | return ON_RIGHT_DIVIDER; | |
880e6158 MR |
1289 | /* On the mode or header line? */ |
1290 | else if ((WINDOW_WANTS_MODELINE_P (w) | |
1291 | && y >= (bottom_y | |
1292 | - CURRENT_MODE_LINE_HEIGHT (w) | |
1293 | - WINDOW_BOTTOM_DIVIDER_WIDTH (w)) | |
1294 | && y <= bottom_y - WINDOW_BOTTOM_DIVIDER_WIDTH (w) | |
1295 | && (part = ON_MODE_LINE)) | |
1296 | || (WINDOW_WANTS_HEADER_LINE_P (w) | |
1297 | && y < top_y + CURRENT_HEADER_LINE_HEIGHT (w) | |
1298 | && (part = ON_HEADER_LINE))) | |
c7b08b0d MR |
1299 | { |
1300 | /* If it's under/over the scroll bar portion of the mode/header | |
1301 | line, say it's on the vertical line. That's to be able to | |
1302 | resize windows horizontally in case we're using toolkit scroll | |
1303 | bars. Note: If scrollbars are on the left, the window that | |
1304 | must be eventually resized is that on the left of WINDOW. */ | |
aea124c4 | 1305 | if ((WINDOW_RIGHT_DIVIDER_WIDTH (w) == 0) |
653b6ea3 MR |
1306 | && ((WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) |
1307 | && !WINDOW_LEFTMOST_P (w) | |
1308 | && eabs (x - left_x) < grabbable_width) | |
1309 | || (!WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) | |
1310 | && !WINDOW_RIGHTMOST_P (w) | |
1311 | && eabs (x - right_x) < grabbable_width))) | |
c7b08b0d MR |
1312 | return ON_VERTICAL_BORDER; |
1313 | else | |
1314 | return part; | |
1315 | } | |
1316 | ||
466539bc EZ |
1317 | /* In what's below, we subtract 1 when computing right_x because we |
1318 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
1319 | if (w->pseudo_window_p) |
1320 | { | |
1321 | left_x = 0; | |
880e6158 | 1322 | right_x = WINDOW_PIXEL_WIDTH (w) - 1; |
5500c422 GM |
1323 | } |
1324 | else | |
1325 | { | |
949cf20f KS |
1326 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
1327 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
5500c422 | 1328 | } |
37962e60 | 1329 | |
949cf20f | 1330 | /* Outside any interesting column? */ |
9173a8fb CY |
1331 | if (x < left_x || x > right_x) |
1332 | return ON_SCROLL_BAR; | |
949cf20f KS |
1333 | |
1334 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
1335 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 1336 | |
949cf20f KS |
1337 | text_left = window_box_left (w, TEXT_AREA); |
1338 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
1339 | ||
1340 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 1341 | { |
447e9da0 | 1342 | if (!w->pseudo_window_p |
aea124c4 | 1343 | && WINDOW_RIGHT_DIVIDER_WIDTH (w) == 0 |
949cf20f | 1344 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 1345 | && !WINDOW_RIGHTMOST_P (w) |
9173a8fb CY |
1346 | && (eabs (x - right_x) < grabbable_width)) |
1347 | return ON_VERTICAL_BORDER; | |
fbad6f9a | 1348 | } |
9173a8fb CY |
1349 | /* Need to say "x > right_x" rather than >=, since on character |
1350 | terminals, the vertical line's x coordinate is right_x. */ | |
1351 | else if (!w->pseudo_window_p | |
aea124c4 | 1352 | && WINDOW_RIGHT_DIVIDER_WIDTH (w) == 0 |
9173a8fb | 1353 | && !WINDOW_RIGHTMOST_P (w) |
f224e500 PE |
1354 | /* Why check ux if we are not the rightmost window? Also |
1355 | shouldn't a pseudo window always be rightmost? */ | |
9173a8fb CY |
1356 | && x > right_x - ux) |
1357 | return ON_VERTICAL_BORDER; | |
1358 | ||
1359 | if (x < text_left) | |
949cf20f KS |
1360 | { |
1361 | if (lmargin_width > 0 | |
1362 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1363 | ? (x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) |
1364 | : (x < left_x + lmargin_width))) | |
1365 | return ON_LEFT_MARGIN; | |
aea124c4 MR |
1366 | else |
1367 | return ON_LEFT_FRINGE; | |
949cf20f KS |
1368 | } |
1369 | ||
9173a8fb | 1370 | if (x >= text_right) |
949cf20f KS |
1371 | { |
1372 | if (rmargin_width > 0 | |
1373 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1374 | ? (x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) |
1375 | : (x >= right_x - rmargin_width))) | |
1376 | return ON_RIGHT_MARGIN; | |
aea124c4 MR |
1377 | else |
1378 | return ON_RIGHT_FRINGE; | |
949cf20f KS |
1379 | } |
1380 | ||
1381 | /* Everything special ruled out - must be on text area */ | |
949cf20f | 1382 | return ON_TEXT; |
d5783c40 JB |
1383 | } |
1384 | ||
9173a8fb CY |
1385 | /* Take X is the frame-relative pixel x-coordinate, and return the |
1386 | x-coordinate relative to part PART of window W. */ | |
1387 | int | |
1388 | window_relative_x_coord (struct window *w, enum window_part part, int x) | |
1389 | { | |
1390 | int left_x = (w->pseudo_window_p) ? 0 : WINDOW_BOX_LEFT_EDGE_X (w); | |
1391 | ||
1392 | switch (part) | |
1393 | { | |
1394 | case ON_TEXT: | |
1395 | return x - window_box_left (w, TEXT_AREA); | |
1396 | ||
653b6ea3 MR |
1397 | case ON_HEADER_LINE: |
1398 | case ON_MODE_LINE: | |
9173a8fb CY |
1399 | case ON_LEFT_FRINGE: |
1400 | return x - left_x; | |
1401 | ||
1402 | case ON_RIGHT_FRINGE: | |
1403 | return x - left_x - WINDOW_LEFT_FRINGE_WIDTH (w); | |
1404 | ||
1405 | case ON_LEFT_MARGIN: | |
1406 | return (x - left_x | |
1407 | - ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1408 | ? WINDOW_LEFT_FRINGE_WIDTH (w) : 0)); | |
1409 | ||
1410 | case ON_RIGHT_MARGIN: | |
1411 | return (x + 1 | |
1412 | - ((w->pseudo_window_p) | |
880e6158 | 1413 | ? WINDOW_PIXEL_WIDTH (w) |
9173a8fb CY |
1414 | : WINDOW_BOX_RIGHT_EDGE_X (w)) |
1415 | + window_box_width (w, RIGHT_MARGIN_AREA) | |
1416 | + ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1417 | ? WINDOW_RIGHT_FRINGE_WIDTH (w) : 0)); | |
1418 | } | |
1419 | ||
1420 | /* ON_SCROLL_BAR, ON_NOTHING, and ON_VERTICAL_BORDER: */ | |
1421 | return 0; | |
1422 | } | |
1423 | ||
b0228ace | 1424 | |
d5783c40 | 1425 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
1426 | Scoordinates_in_window_p, 2, 2, 0, |
1427 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
52162052 | 1428 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1429 | COORDINATES is a cons of the form (X . Y), X and Y being distances |
1430 | measured in characters from the upper-left corner of the frame. | |
23fe745a | 1431 | \(0 . 0) denotes the character in the upper left corner of the |
fdb82f93 PJ |
1432 | frame. |
1433 | If COORDINATES are in the text portion of WINDOW, | |
1434 | the coordinates relative to the window are returned. | |
aea124c4 MR |
1435 | If they are in the bottom divider of WINDOW, `bottom-divider' is returned. |
1436 | If they are in the right divider of WINDOW, `right-divider' is returned. | |
fdb82f93 | 1437 | If they are in the mode line of WINDOW, `mode-line' is returned. |
aea124c4 | 1438 | If they are in the header line of WINDOW, `header-line' is returned. |
81d189fd KS |
1439 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
1440 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 1441 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
1442 | `vertical-line' is returned. |
1443 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
1444 | or `right-margin' is returned. */) | |
5842a27b | 1445 | (register Lisp_Object coordinates, Lisp_Object window) |
d5783c40 | 1446 | { |
5500c422 GM |
1447 | struct window *w; |
1448 | struct frame *f; | |
d5783c40 | 1449 | int x, y; |
5500c422 | 1450 | Lisp_Object lx, ly; |
d5783c40 | 1451 | |
52162052 | 1452 | w = decode_live_window (window); |
d3d50620 | 1453 | f = XFRAME (w->frame); |
b7826503 | 1454 | CHECK_CONS (coordinates); |
5500c422 GM |
1455 | lx = Fcar (coordinates); |
1456 | ly = Fcdr (coordinates); | |
b7826503 PJ |
1457 | CHECK_NUMBER_OR_FLOAT (lx); |
1458 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
1459 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
1460 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 | 1461 | |
9173a8fb | 1462 | switch (coordinates_in_window (w, x, y)) |
d5783c40 | 1463 | { |
7442878f | 1464 | case ON_NOTHING: |
d5783c40 JB |
1465 | return Qnil; |
1466 | ||
7442878f | 1467 | case ON_TEXT: |
9173a8fb CY |
1468 | /* Convert X and Y to window relative pixel coordinates, and |
1469 | return the canonical char units. */ | |
1470 | x -= window_box_left (w, TEXT_AREA); | |
1471 | y -= WINDOW_TOP_EDGE_Y (w); | |
949cf20f KS |
1472 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
1473 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 1474 | |
7442878f | 1475 | case ON_MODE_LINE: |
d5783c40 | 1476 | return Qmode_line; |
37962e60 | 1477 | |
7442878f | 1478 | case ON_VERTICAL_BORDER: |
e5d77022 | 1479 | return Qvertical_line; |
d5783c40 | 1480 | |
7442878f | 1481 | case ON_HEADER_LINE: |
045dee35 | 1482 | return Qheader_line; |
5500c422 | 1483 | |
7442878f GM |
1484 | case ON_LEFT_FRINGE: |
1485 | return Qleft_fringe; | |
177c0ea7 | 1486 | |
7442878f GM |
1487 | case ON_RIGHT_FRINGE: |
1488 | return Qright_fringe; | |
fbad6f9a | 1489 | |
49b996e7 GM |
1490 | case ON_LEFT_MARGIN: |
1491 | return Qleft_margin; | |
177c0ea7 | 1492 | |
49b996e7 GM |
1493 | case ON_RIGHT_MARGIN: |
1494 | return Qright_margin; | |
1495 | ||
6487f669 RS |
1496 | case ON_SCROLL_BAR: |
1497 | /* Historically we are supposed to return nil in this case. */ | |
1498 | return Qnil; | |
1499 | ||
880e6158 MR |
1500 | case ON_RIGHT_DIVIDER: |
1501 | return Qright_divider; | |
1502 | ||
1503 | case ON_BOTTOM_DIVIDER: | |
1504 | return Qbottom_divider; | |
1505 | ||
d5783c40 | 1506 | default: |
1088b922 | 1507 | emacs_abort (); |
d5783c40 JB |
1508 | } |
1509 | } | |
1510 | ||
67492200 GM |
1511 | |
1512 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
1513 | Check if window W contains coordinates specified by USER_DATA which |
1514 | is actually a pointer to a struct check_window_data CW. | |
1515 | ||
1516 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
1517 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 1518 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
1519 | zero from this function to stop iterating over windows. */ |
1520 | ||
1521 | struct check_window_data | |
1522 | { | |
1523 | Lisp_Object *window; | |
9173a8fb | 1524 | int x, y; |
341f3858 | 1525 | enum window_part *part; |
f95464e4 | 1526 | }; |
67492200 GM |
1527 | |
1528 | static int | |
971de7fb | 1529 | check_window_containing (struct window *w, void *user_data) |
67492200 | 1530 | { |
7d652d97 | 1531 | struct check_window_data *cw = user_data; |
7442878f GM |
1532 | enum window_part found; |
1533 | int continue_p = 1; | |
67492200 | 1534 | |
f95464e4 | 1535 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1536 | if (found != ON_NOTHING) |
67492200 | 1537 | { |
341f3858 | 1538 | *cw->part = found; |
f95464e4 | 1539 | XSETWINDOW (*cw->window, w); |
7442878f | 1540 | continue_p = 0; |
67492200 | 1541 | } |
177c0ea7 | 1542 | |
7442878f | 1543 | return continue_p; |
67492200 GM |
1544 | } |
1545 | ||
1546 | ||
5500c422 | 1547 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1548 | return it as a Lisp_Object. |
1549 | ||
1550 | If X, Y is on one of the window's special `window_part' elements, | |
9173a8fb | 1551 | set *PART to the id of that element. |
949cf20f | 1552 | |
341f3858 | 1553 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1554 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1555 | ||
1556 | This function was previously implemented with a loop cycling over | |
1557 | windows with Fnext_window, and starting with the frame's selected | |
1558 | window. It turned out that this doesn't work with an | |
1559 | implementation of next_window using Vwindow_list, because | |
1560 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1561 | tree of F when this function is called asynchronously from | |
1562 | note_mouse_highlight. The original loop didn't terminate in this | |
1563 | case. */ | |
5500c422 | 1564 | |
7ab12479 | 1565 | Lisp_Object |
9173a8fb | 1566 | window_from_coordinates (struct frame *f, int x, int y, |
748fa866 | 1567 | enum window_part *part, bool tool_bar_p) |
7ab12479 | 1568 | { |
67492200 | 1569 | Lisp_Object window; |
f95464e4 | 1570 | struct check_window_data cw; |
341f3858 KS |
1571 | enum window_part dummy; |
1572 | ||
1573 | if (part == 0) | |
1574 | part = &dummy; | |
5500c422 | 1575 | |
67492200 | 1576 | window = Qnil; |
9173a8fb | 1577 | cw.window = &window, cw.x = x, cw.y = y; cw.part = part; |
f95464e4 | 1578 | foreach_window (f, check_window_containing, &cw); |
177c0ea7 | 1579 | |
742516e0 | 1580 | #if defined (HAVE_WINDOW_SYSTEM) && ! defined (USE_GTK) && ! defined (HAVE_NS) |
67492200 GM |
1581 | /* If not found above, see if it's in the tool bar window, if a tool |
1582 | bar exists. */ | |
1583 | if (NILP (window) | |
1584 | && tool_bar_p | |
e69b0960 DA |
1585 | && WINDOWP (f->tool_bar_window) |
1586 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 | |
1587 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), x, y) | |
7442878f | 1588 | != ON_NOTHING)) |
5500c422 | 1589 | { |
341f3858 | 1590 | *part = ON_TEXT; |
e69b0960 | 1591 | window = f->tool_bar_window; |
5500c422 | 1592 | } |
742516e0 | 1593 | #endif |
37962e60 | 1594 | |
67492200 | 1595 | return window; |
7ab12479 JB |
1596 | } |
1597 | ||
ab17c3f2 | 1598 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 | 1599 | doc: /* Return window containing coordinates X and Y on FRAME. |
496e208e | 1600 | FRAME must be a live frame and defaults to the selected one. |
fdb82f93 PJ |
1601 | The top left corner of the frame is considered to be row 0, |
1602 | column 0. */) | |
5842a27b | 1603 | (Lisp_Object x, Lisp_Object y, Lisp_Object frame) |
7ab12479 | 1604 | { |
d9f07150 | 1605 | struct frame *f = decode_live_frame (frame); |
7ab12479 | 1606 | |
5500c422 | 1607 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1608 | CHECK_NUMBER_OR_FLOAT (x); |
1609 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1610 | |
177c0ea7 | 1611 | return window_from_coordinates (f, |
2c77cf3b RS |
1612 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1613 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1614 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1615 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
9173a8fb | 1616 | 0, 0); |
7ab12479 JB |
1617 | } |
1618 | ||
1619 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1620 | doc: /* Return current value of point in WINDOW. |
496e208e | 1621 | WINDOW must be a live window and defaults to the selected one. |
c85322d0 | 1622 | |
5481664a MR |
1623 | For a nonselected window, this is the value point would have if that |
1624 | window were selected. | |
1625 | ||
1626 | Note that, when WINDOW is selected, the value returned is the same as | |
1627 | that returned by `point' for WINDOW's buffer. It would be more strictly | |
9fc9a531 | 1628 | correct to return the top-level value of `point', outside of any |
5481664a | 1629 | `save-excursion' forms. But that is hard to define. */) |
5842a27b | 1630 | (Lisp_Object window) |
7ab12479 | 1631 | { |
52162052 | 1632 | register struct window *w = decode_live_window (window); |
7ab12479 | 1633 | |
5481664a | 1634 | if (w == XWINDOW (selected_window)) |
e74aeda8 | 1635 | return make_number (BUF_PT (XBUFFER (w->contents))); |
5481664a MR |
1636 | else |
1637 | return Fmarker_position (w->pointm); | |
7ab12479 JB |
1638 | } |
1639 | ||
1640 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1641 | doc: /* Return position at which display currently starts in WINDOW. |
496e208e | 1642 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 1643 | This is updated by redisplay or by calling `set-window-start'. */) |
5842a27b | 1644 | (Lisp_Object window) |
7ab12479 | 1645 | { |
52162052 | 1646 | return Fmarker_position (decode_live_window (window)->start); |
7ab12479 JB |
1647 | } |
1648 | ||
8646118f RS |
1649 | /* This is text temporarily removed from the doc string below. |
1650 | ||
fdb82f93 PJ |
1651 | This function returns nil if the position is not currently known. |
1652 | That happens when redisplay is preempted and doesn't finish. | |
1653 | If in that case you want to compute where the end of the window would | |
1654 | have been if redisplay had finished, do this: | |
1655 | (save-excursion | |
1656 | (goto-char (window-start window)) | |
1657 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1658 | (point))") */ |
1659 | ||
478292ed | 1660 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1661 | doc: /* Return position at which display currently ends in WINDOW. |
496e208e | 1662 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1663 | This is updated by redisplay, when it runs to completion. |
1664 | Simply changing the buffer text or setting `window-start' | |
1665 | does not update this value. | |
87e68db4 | 1666 | Return nil if there is no recorded value. (This can happen if the |
a0a37a6f | 1667 | last redisplay of WINDOW was preempted, and did not finish.) |
fdb82f93 PJ |
1668 | If UPDATE is non-nil, compute the up-to-date position |
1669 | if it isn't already recorded. */) | |
5842a27b | 1670 | (Lisp_Object window, Lisp_Object update) |
7ab12479 JB |
1671 | { |
1672 | Lisp_Object value; | |
52162052 | 1673 | struct window *w = decode_live_window (window); |
5a41ab94 | 1674 | Lisp_Object buf; |
31790df3 | 1675 | struct buffer *b; |
5a41ab94 | 1676 | |
e74aeda8 | 1677 | buf = w->contents; |
b7826503 | 1678 | CHECK_BUFFER (buf); |
b3a10345 | 1679 | b = XBUFFER (buf); |
5a41ab94 | 1680 | |
478292ed | 1681 | if (! NILP (update) |
fcc1fe85 EZ |
1682 | && (windows_or_buffers_changed |
1683 | || !w->window_end_valid | |
1684 | || b->clip_changed | |
1685 | || b->prevent_redisplay_optimizations_p | |
170da1ec | 1686 | || window_outdated (w)) |
41791a20 | 1687 | && !noninteractive) |
478292ed | 1688 | { |
cbc099e5 GM |
1689 | struct text_pos startp; |
1690 | struct it it; | |
b3a10345 | 1691 | struct buffer *old_buffer = NULL; |
57b3e30b | 1692 | void *itdata = NULL; |
b3a10345 KS |
1693 | |
1694 | /* Cannot use Fvertical_motion because that function doesn't | |
1695 | cope with variable-height lines. */ | |
1696 | if (b != current_buffer) | |
1697 | { | |
1698 | old_buffer = current_buffer; | |
1699 | set_buffer_internal (b); | |
1700 | } | |
2d6d9df0 GM |
1701 | |
1702 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1703 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1704 | `-l' containing a call to `rmail' with subsequent other |
1705 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1706 | rmail had already narrowed the buffer. */ |
cf91889a | 1707 | CLIP_TEXT_POS_FROM_MARKER (startp, w->start); |
cbc099e5 | 1708 | |
57b3e30b | 1709 | itdata = bidi_shelve_cache (); |
cbc099e5 GM |
1710 | start_display (&it, w, startp); |
1711 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1712 | if (it.current_y < it.last_visible_y) |
1713 | move_it_past_eol (&it); | |
cbc099e5 | 1714 | value = make_number (IT_CHARPOS (it)); |
35928349 | 1715 | bidi_unshelve_cache (itdata, 0); |
177c0ea7 | 1716 | |
99593a9d GM |
1717 | if (old_buffer) |
1718 | set_buffer_internal (old_buffer); | |
478292ed RS |
1719 | } |
1720 | else | |
02455cb6 | 1721 | XSETINT (value, BUF_Z (b) - w->window_end_pos); |
7ab12479 JB |
1722 | |
1723 | return value; | |
1724 | } | |
1725 | ||
a7ca3326 | 1726 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, |
a0a37a6f | 1727 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
52162052 | 1728 | WINDOW must be a live window and defaults to the selected one. |
a0a37a6f | 1729 | Return POS. */) |
5842a27b | 1730 | (Lisp_Object window, Lisp_Object pos) |
7ab12479 | 1731 | { |
52162052 | 1732 | register struct window *w = decode_live_window (window); |
7ab12479 | 1733 | |
f74de345 | 1734 | /* Type of POS is checked by Fgoto_char or set_marker_restricted ... */ |
799417bd | 1735 | |
5481664a MR |
1736 | if (w == XWINDOW (selected_window)) |
1737 | { | |
e74aeda8 | 1738 | if (XBUFFER (w->contents) == current_buffer) |
5481664a MR |
1739 | Fgoto_char (pos); |
1740 | else | |
1741 | { | |
1742 | struct buffer *old_buffer = current_buffer; | |
1743 | ||
f74de345 DA |
1744 | /* ... but here we want to catch type error before buffer change. */ |
1745 | CHECK_NUMBER_COERCE_MARKER (pos); | |
e74aeda8 | 1746 | set_buffer_internal (XBUFFER (w->contents)); |
5481664a MR |
1747 | Fgoto_char (pos); |
1748 | set_buffer_internal (old_buffer); | |
1749 | } | |
1750 | } | |
1751 | else | |
1752 | { | |
e74aeda8 | 1753 | set_marker_restricted (w->pointm, pos, w->contents); |
5481664a MR |
1754 | /* We have to make sure that redisplay updates the window to show |
1755 | the new value of point. */ | |
5961ad6c | 1756 | wset_redisplay (w); |
5481664a | 1757 | } |
177c0ea7 | 1758 | |
7ab12479 JB |
1759 | return pos; |
1760 | } | |
1761 | ||
1762 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1763 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
52162052 MR |
1764 | WINDOW must be a live window and defaults to the selected one. Return |
1765 | POS. Optional third arg NOFORCE non-nil inhibits next redisplay from | |
d653c8cc | 1766 | overriding motion of point in order to display at this exact start. */) |
5842a27b | 1767 | (Lisp_Object window, Lisp_Object pos, Lisp_Object noforce) |
7ab12479 | 1768 | { |
52162052 | 1769 | register struct window *w = decode_live_window (window); |
7ab12479 | 1770 | |
e74aeda8 | 1771 | set_marker_restricted (w->start, pos, w->contents); |
f74de345 | 1772 | /* This is not right, but much easier than doing what is right. */ |
c98ff5dd | 1773 | w->start_at_line_beg = 0; |
265a9e55 | 1774 | if (NILP (noforce)) |
c98ff5dd DA |
1775 | w->force_start = 1; |
1776 | w->update_mode_line = 1; | |
72fdd473 MR |
1777 | /* Bug#15957. */ |
1778 | w->window_end_valid = 0; | |
5961ad6c | 1779 | wset_redisplay (w); |
ce7fae7d | 1780 | |
7ab12479 JB |
1781 | return pos; |
1782 | } | |
1783 | ||
496e208e MR |
1784 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
1785 | Spos_visible_in_window_p, 0, 3, 0, | |
1786 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. | |
52162052 MR |
1787 | WINDOW must be a live window and defaults to the selected one. |
1788 | ||
1789 | Return nil if that position is scrolled vertically out of view. If a | |
1790 | character is only partially visible, nil is returned, unless the | |
1791 | optional argument PARTIALLY is non-nil. If POS is only out of view | |
1792 | because of horizontal scrolling, return non-nil. If POS is t, it | |
1793 | specifies the position of the last visible glyph in WINDOW. POS | |
1794 | defaults to point in WINDOW; WINDOW defaults to the selected window. | |
496e208e MR |
1795 | |
1796 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
ba59bd80 | 1797 | the return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), |
496e208e MR |
1798 | where X and Y are the pixel coordinates relative to the top left corner |
1799 | of the window. The remaining elements are omitted if the character after | |
1800 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
ba59bd80 EZ |
1801 | off-window at the top and bottom of the screen line ("row") containing |
1802 | POS, ROWH is the visible height of that row, and VPOS is the row number | |
1803 | \(zero-based). */) | |
496e208e MR |
1804 | (Lisp_Object pos, Lisp_Object window, Lisp_Object partially) |
1805 | { | |
1806 | register struct window *w; | |
1807 | register EMACS_INT posint; | |
1808 | register struct buffer *buf; | |
1809 | struct text_pos top; | |
1810 | Lisp_Object in_window = Qnil; | |
1811 | int rtop, rbot, rowh, vpos, fully_p = 1; | |
1812 | int x, y; | |
1813 | ||
52162052 | 1814 | w = decode_live_window (window); |
e74aeda8 | 1815 | buf = XBUFFER (w->contents); |
d3d50620 | 1816 | SET_TEXT_POS_FROM_MARKER (top, w->start); |
496e208e MR |
1817 | |
1818 | if (EQ (pos, Qt)) | |
1819 | posint = -1; | |
1820 | else if (!NILP (pos)) | |
1821 | { | |
1822 | CHECK_NUMBER_COERCE_MARKER (pos); | |
1823 | posint = XINT (pos); | |
1824 | } | |
1825 | else if (w == XWINDOW (selected_window)) | |
1826 | posint = PT; | |
1827 | else | |
4c1acb95 | 1828 | posint = marker_position (w->pointm); |
496e208e MR |
1829 | |
1830 | /* If position is above window start or outside buffer boundaries, | |
1831 | or if window start is out of range, position is not visible. */ | |
1832 | if ((EQ (pos, Qt) | |
1833 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
1834 | && CHARPOS (top) >= BUF_BEGV (buf) | |
1835 | && CHARPOS (top) <= BUF_ZV (buf) | |
1836 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) | |
1837 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) | |
1838 | in_window = Qt; | |
1839 | ||
1840 | if (!NILP (in_window) && !NILP (partially)) | |
1841 | { | |
1842 | Lisp_Object part = Qnil; | |
1843 | if (!fully_p) | |
1479c557 | 1844 | part = list4i (rtop, rbot, rowh, vpos); |
496e208e MR |
1845 | in_window = Fcons (make_number (x), |
1846 | Fcons (make_number (y), part)); | |
1847 | } | |
1848 | ||
1849 | return in_window; | |
1850 | } | |
1851 | ||
1852 | DEFUN ("window-line-height", Fwindow_line_height, | |
1853 | Swindow_line_height, 0, 2, 0, | |
1854 | doc: /* Return height in pixels of text line LINE in window WINDOW. | |
52162052 | 1855 | WINDOW must be a live window and defaults to the selected one. |
496e208e MR |
1856 | |
1857 | Return height of current line if LINE is omitted or nil. Return height of | |
1858 | header or mode line if LINE is `header-line' or `mode-line'. | |
1859 | Otherwise, LINE is a text line number starting from 0. A negative number | |
1860 | counts from the end of the window. | |
1861 | ||
1862 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height | |
1863 | in pixels of the visible part of the line, VPOS and YPOS are the | |
1864 | vertical position in lines and pixels of the line, relative to the top | |
1865 | of the first text line, and OFFBOT is the number of off-window pixels at | |
1866 | the bottom of the text line. If there are off-window pixels at the top | |
1867 | of the (first) text line, YPOS is negative. | |
1868 | ||
1869 | Return nil if window display is not up-to-date. In that case, use | |
1870 | `pos-visible-in-window-p' to obtain the information. */) | |
1871 | (Lisp_Object line, Lisp_Object window) | |
1872 | { | |
1873 | register struct window *w; | |
1874 | register struct buffer *b; | |
1875 | struct glyph_row *row, *end_row; | |
d311d28c PE |
1876 | int max_y, crop, i; |
1877 | EMACS_INT n; | |
496e208e | 1878 | |
52162052 | 1879 | w = decode_live_window (window); |
496e208e MR |
1880 | |
1881 | if (noninteractive || w->pseudo_window_p) | |
1882 | return Qnil; | |
1883 | ||
e74aeda8 DA |
1884 | CHECK_BUFFER (w->contents); |
1885 | b = XBUFFER (w->contents); | |
496e208e MR |
1886 | |
1887 | /* Fail if current matrix is not up-to-date. */ | |
9d93ce29 | 1888 | if (!w->window_end_valid |
fcc1fe85 EZ |
1889 | || windows_or_buffers_changed |
1890 | || b->clip_changed | |
1891 | || b->prevent_redisplay_optimizations_p | |
170da1ec | 1892 | || window_outdated (w)) |
496e208e MR |
1893 | return Qnil; |
1894 | ||
1895 | if (NILP (line)) | |
1896 | { | |
1897 | i = w->cursor.vpos; | |
1898 | if (i < 0 || i >= w->current_matrix->nrows | |
1899 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
1900 | return Qnil; | |
1901 | max_y = window_text_bottom_y (w); | |
1902 | goto found_row; | |
1903 | } | |
1904 | ||
1905 | if (EQ (line, Qheader_line)) | |
1906 | { | |
1907 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) | |
1908 | return Qnil; | |
1909 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
1479c557 | 1910 | return row->enabled_p ? list4i (row->height, 0, 0, 0) : Qnil; |
496e208e MR |
1911 | } |
1912 | ||
1913 | if (EQ (line, Qmode_line)) | |
1914 | { | |
1915 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); | |
89bc0592 | 1916 | return (row->enabled_p ? |
1479c557 PE |
1917 | list4i (row->height, |
1918 | 0, /* not accurate */ | |
1919 | (WINDOW_HEADER_LINE_HEIGHT (w) | |
1920 | + window_text_bottom_y (w)), | |
1921 | 0) | |
89bc0592 | 1922 | : Qnil); |
496e208e MR |
1923 | } |
1924 | ||
1925 | CHECK_NUMBER (line); | |
1926 | n = XINT (line); | |
1927 | ||
1928 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
1929 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
1930 | max_y = window_text_bottom_y (w); | |
1931 | i = 0; | |
1932 | ||
1933 | while ((n < 0 || i < n) | |
1934 | && row <= end_row && row->enabled_p | |
1935 | && row->y + row->height < max_y) | |
1936 | row++, i++; | |
1937 | ||
1938 | if (row > end_row || !row->enabled_p) | |
1939 | return Qnil; | |
1940 | ||
1941 | if (++n < 0) | |
1942 | { | |
1943 | if (-n > i) | |
1944 | return Qnil; | |
1945 | row += n; | |
1946 | i += n; | |
1947 | } | |
1948 | ||
1949 | found_row: | |
1950 | crop = max (0, (row->y + row->height) - max_y); | |
1479c557 | 1951 | return list4i (row->height + min (0, row->y) - crop, i, row->y, crop); |
496e208e | 1952 | } |
d653c8cc | 1953 | |
a7ca3326 | 1954 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, |
d653c8cc MR |
1955 | 0, 1, 0, |
1956 | doc: /* Return non-nil when WINDOW is dedicated to its buffer. | |
12bb3111 | 1957 | More precisely, return the value assigned by the last call of |
7bfac547 MR |
1958 | `set-window-dedicated-p' for WINDOW. Return nil if that function was |
1959 | never called with WINDOW as its argument, or the value set by that | |
52162052 MR |
1960 | function was internally reset since its last call. WINDOW must be a |
1961 | live window and defaults to the selected one. | |
7bfac547 MR |
1962 | |
1963 | When a window is dedicated to its buffer, `display-buffer' will refrain | |
1964 | from displaying another buffer in it. `get-lru-window' and | |
1965 | `get-largest-window' treat dedicated windows specially. | |
1966 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1967 | `kill-buffer' can delete a dedicated window and the containing frame. | |
1968 | ||
1969 | Functions like `set-window-buffer' may change the buffer displayed by a | |
1970 | window, unless that window is "strongly" dedicated to its buffer, that | |
1971 | is the value returned by `window-dedicated-p' is t. */) | |
5842a27b | 1972 | (Lisp_Object window) |
7ab12479 | 1973 | { |
52162052 | 1974 | return decode_live_window (window)->dedicated; |
7ab12479 JB |
1975 | } |
1976 | ||
d207b766 RS |
1977 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1978 | Sset_window_dedicated_p, 2, 2, 0, | |
d653c8cc | 1979 | doc: /* Mark WINDOW as dedicated according to FLAG. |
496e208e MR |
1980 | WINDOW must be a live window and defaults to the selected one. FLAG |
1981 | non-nil means mark WINDOW as dedicated to its buffer. FLAG nil means | |
1982 | mark WINDOW as non-dedicated. Return FLAG. | |
d653c8cc | 1983 | |
7bfac547 MR |
1984 | When a window is dedicated to its buffer, `display-buffer' will refrain |
1985 | from displaying another buffer in it. `get-lru-window' and | |
1986 | `get-largest-window' treat dedicated windows specially. | |
496e208e MR |
1987 | `delete-windows-on', `replace-buffer-in-windows', `quit-window', |
1988 | `quit-restore-window' and `kill-buffer' can delete a dedicated window | |
1989 | and the containing frame. | |
7bfac547 MR |
1990 | |
1991 | As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to | |
1992 | its buffer. Functions like `set-window-buffer' may change the buffer | |
1993 | displayed by a window, unless that window is strongly dedicated to its | |
1994 | buffer. If and when `set-window-buffer' displays another buffer in a | |
496e208e | 1995 | window, it also makes sure that the window is no more dedicated. */) |
5842a27b | 1996 | (Lisp_Object window, Lisp_Object flag) |
7ab12479 | 1997 | { |
e8c17b81 PE |
1998 | wset_dedicated (decode_live_window (window), flag); |
1999 | return flag; | |
7ab12479 JB |
2000 | } |
2001 | ||
496e208e MR |
2002 | DEFUN ("window-prev-buffers", Fwindow_prev_buffers, Swindow_prev_buffers, |
2003 | 0, 1, 0, | |
2004 | doc: /* Return buffers previously shown in WINDOW. | |
2005 | WINDOW must be a live window and defaults to the selected one. | |
2006 | ||
94e0933e CY |
2007 | The return value is a list of elements (BUFFER WINDOW-START POS), |
2008 | where BUFFER is a buffer, WINDOW-START is the start position of the | |
2009 | window for that buffer, and POS is a window-specific point value. */) | |
496e208e MR |
2010 | (Lisp_Object window) |
2011 | { | |
52162052 | 2012 | return decode_live_window (window)->prev_buffers; |
496e208e MR |
2013 | } |
2014 | ||
2015 | DEFUN ("set-window-prev-buffers", Fset_window_prev_buffers, | |
2016 | Sset_window_prev_buffers, 2, 2, 0, | |
2017 | doc: /* Set WINDOW's previous buffers to PREV-BUFFERS. | |
94e0933e | 2018 | WINDOW must be a live window and defaults to the selected one. |
496e208e | 2019 | |
94e0933e CY |
2020 | PREV-BUFFERS should be a list of elements (BUFFER WINDOW-START POS), |
2021 | where BUFFER is a buffer, WINDOW-START is the start position of the | |
2022 | window for that buffer, and POS is a window-specific point value. */) | |
496e208e MR |
2023 | (Lisp_Object window, Lisp_Object prev_buffers) |
2024 | { | |
e8c17b81 PE |
2025 | wset_prev_buffers (decode_live_window (window), prev_buffers); |
2026 | return prev_buffers; | |
496e208e MR |
2027 | } |
2028 | ||
2029 | DEFUN ("window-next-buffers", Fwindow_next_buffers, Swindow_next_buffers, | |
2030 | 0, 1, 0, | |
2031 | doc: /* Return list of buffers recently re-shown in WINDOW. | |
2032 | WINDOW must be a live window and defaults to the selected one. */) | |
2033 | (Lisp_Object window) | |
2034 | { | |
52162052 | 2035 | return decode_live_window (window)->next_buffers; |
496e208e MR |
2036 | } |
2037 | ||
2038 | DEFUN ("set-window-next-buffers", Fset_window_next_buffers, | |
2039 | Sset_window_next_buffers, 2, 2, 0, | |
2040 | doc: /* Set WINDOW's next buffers to NEXT-BUFFERS. | |
94e0933e CY |
2041 | WINDOW must be a live window and defaults to the selected one. |
2042 | NEXT-BUFFERS should be a list of buffers. */) | |
496e208e MR |
2043 | (Lisp_Object window, Lisp_Object next_buffers) |
2044 | { | |
e8c17b81 PE |
2045 | wset_next_buffers (decode_live_window (window), next_buffers); |
2046 | return next_buffers; | |
496e208e | 2047 | } |
d653c8cc | 2048 | |
cfbb2395 JB |
2049 | DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters, |
2050 | 0, 1, 0, | |
d653c8cc | 2051 | doc: /* Return the parameters of WINDOW and their values. |
52162052 MR |
2052 | WINDOW must be a valid window and defaults to the selected one. The |
2053 | return value is a list of elements of the form (PARAMETER . VALUE). */) | |
5842a27b | 2054 | (Lisp_Object window) |
cfbb2395 | 2055 | { |
52162052 | 2056 | return Fcopy_alist (decode_valid_window (window)->window_parameters); |
cfbb2395 JB |
2057 | } |
2058 | ||
2059 | DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter, | |
2060 | 2, 2, 0, | |
d653c8cc | 2061 | doc: /* Return WINDOW's value for PARAMETER. |
a8c729af | 2062 | WINDOW can be any window and defaults to the selected one. */) |
5842a27b | 2063 | (Lisp_Object window, Lisp_Object parameter) |
cfbb2395 | 2064 | { |
927abf37 JB |
2065 | Lisp_Object result; |
2066 | ||
a8c729af | 2067 | result = Fassq (parameter, decode_any_window (window)->window_parameters); |
927abf37 | 2068 | return CDR_SAFE (result); |
cfbb2395 JB |
2069 | } |
2070 | ||
cfbb2395 JB |
2071 | DEFUN ("set-window-parameter", Fset_window_parameter, |
2072 | Sset_window_parameter, 3, 3, 0, | |
d653c8cc | 2073 | doc: /* Set WINDOW's value of PARAMETER to VALUE. |
a8c729af | 2074 | WINDOW can be any window and defaults to the selected one. |
52162052 | 2075 | Return VALUE. */) |
5842a27b | 2076 | (Lisp_Object window, Lisp_Object parameter, Lisp_Object value) |
cfbb2395 | 2077 | { |
a8c729af | 2078 | register struct window *w = decode_any_window (window); |
cfbb2395 JB |
2079 | Lisp_Object old_alist_elt; |
2080 | ||
d3d50620 | 2081 | old_alist_elt = Fassq (parameter, w->window_parameters); |
12bb3111 | 2082 | if (NILP (old_alist_elt)) |
e8c17b81 PE |
2083 | wset_window_parameters |
2084 | (w, Fcons (Fcons (parameter, value), w->window_parameters)); | |
cfbb2395 JB |
2085 | else |
2086 | Fsetcdr (old_alist_elt, value); | |
927abf37 | 2087 | return value; |
cfbb2395 JB |
2088 | } |
2089 | ||
7ab12479 JB |
2090 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, |
2091 | 0, 1, 0, | |
c85322d0 | 2092 | doc: /* Return the display-table that WINDOW is using. |
52162052 | 2093 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 2094 | (Lisp_Object window) |
7ab12479 | 2095 | { |
52162052 | 2096 | return decode_live_window (window)->display_table; |
7ab12479 JB |
2097 | } |
2098 | ||
5500c422 GM |
2099 | /* Get the display table for use on window W. This is either W's |
2100 | display table or W's buffer's display table. Ignore the specified | |
2101 | tables if they are not valid; if no valid table is specified, | |
2102 | return 0. */ | |
7ab12479 | 2103 | |
319315f1 | 2104 | struct Lisp_Char_Table * |
971de7fb | 2105 | window_display_table (struct window *w) |
7ab12479 | 2106 | { |
c756cdbe GM |
2107 | struct Lisp_Char_Table *dp = NULL; |
2108 | ||
d3d50620 DA |
2109 | if (DISP_TABLE_P (w->display_table)) |
2110 | dp = XCHAR_TABLE (w->display_table); | |
e74aeda8 | 2111 | else if (BUFFERP (w->contents)) |
c756cdbe | 2112 | { |
e74aeda8 | 2113 | struct buffer *b = XBUFFER (w->contents); |
177c0ea7 | 2114 | |
4b4deea2 TT |
2115 | if (DISP_TABLE_P (BVAR (b, display_table))) |
2116 | dp = XCHAR_TABLE (BVAR (b, display_table)); | |
c756cdbe GM |
2117 | else if (DISP_TABLE_P (Vstandard_display_table)) |
2118 | dp = XCHAR_TABLE (Vstandard_display_table); | |
2119 | } | |
171d003c | 2120 | |
c756cdbe | 2121 | return dp; |
7ab12479 JB |
2122 | } |
2123 | ||
3a2712f9 | 2124 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
52162052 MR |
2125 | doc: /* Set WINDOW's display-table to TABLE. |
2126 | WINDOW must be a live window and defaults to the selected one. */) | |
5842a27b | 2127 | (register Lisp_Object window, Lisp_Object table) |
7ab12479 | 2128 | { |
e8c17b81 PE |
2129 | wset_display_table (decode_live_window (window), table); |
2130 | return table; | |
7ab12479 JB |
2131 | } |
2132 | \f | |
562dd5e9 | 2133 | /* Record info on buffer window W is displaying |
7ab12479 | 2134 | when it is about to cease to display that buffer. */ |
dfcf069d | 2135 | static void |
971de7fb | 2136 | unshow_buffer (register struct window *w) |
7ab12479 | 2137 | { |
e74aeda8 DA |
2138 | Lisp_Object buf = w->contents; |
2139 | struct buffer *b = XBUFFER (buf); | |
7ab12479 | 2140 | |
e74aeda8 | 2141 | eassert (b == XMARKER (w->pointm)->buffer); |
7ab12479 | 2142 | |
573f41ab | 2143 | #if 0 |
7ab12479 | 2144 | if (w == XWINDOW (selected_window) |
e74aeda8 | 2145 | || ! EQ (buf, XWINDOW (selected_window)->contents)) |
7ab12479 JB |
2146 | /* Do this except when the selected window's buffer |
2147 | is being removed from some other window. */ | |
573f41ab RS |
2148 | #endif |
2149 | /* last_window_start records the start position that this buffer | |
2150 | had in the last window to be disconnected from it. | |
2151 | Now that this statement is unconditional, | |
2152 | it is possible for the buffer to be displayed in the | |
2153 | selected window, while last_window_start reflects another | |
2154 | window which was recently showing the same buffer. | |
2155 | Some people might say that might be a good thing. Let's see. */ | |
d3d50620 | 2156 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
2157 | |
2158 | /* Point in the selected window's buffer | |
2159 | is actually stored in that buffer, and the window's pointm isn't used. | |
2160 | So don't clobber point in that buffer. */ | |
e74aeda8 | 2161 | if (! EQ (buf, XWINDOW (selected_window)->contents) |
c4b6914d MR |
2162 | /* Don't clobber point in current buffer either (this could be |
2163 | useful in connection with bug#12208). | |
2164 | && XBUFFER (buf) != current_buffer */ | |
719eaeb1 | 2165 | /* This line helps to fix Horsley's testbug.el bug. */ |
4b4deea2 TT |
2166 | && !(WINDOWP (BVAR (b, last_selected_window)) |
2167 | && w != XWINDOW (BVAR (b, last_selected_window)) | |
e74aeda8 | 2168 | && EQ (buf, XWINDOW (BVAR (b, last_selected_window))->contents))) |
b73ea88e RS |
2169 | temp_set_point_both (b, |
2170 | clip_to_bounds (BUF_BEGV (b), | |
4c1acb95 | 2171 | marker_position (w->pointm), |
b73ea88e RS |
2172 | BUF_ZV (b)), |
2173 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
d3d50620 | 2174 | marker_byte_position (w->pointm), |
b73ea88e | 2175 | BUF_ZV_BYTE (b))); |
177c0ea7 | 2176 | |
4b4deea2 TT |
2177 | if (WINDOWP (BVAR (b, last_selected_window)) |
2178 | && w == XWINDOW (BVAR (b, last_selected_window))) | |
39eb03f1 | 2179 | bset_last_selected_window (b, Qnil); |
7ab12479 JB |
2180 | } |
2181 | ||
1a13852e MR |
2182 | /* Put NEW into the window structure in place of OLD. SETFLAG zero |
2183 | means change window structure only. Otherwise store geometry and | |
2184 | other settings as well. */ | |
dfcf069d | 2185 | static void |
1a13852e | 2186 | replace_window (Lisp_Object old, Lisp_Object new, int setflag) |
7ab12479 JB |
2187 | { |
2188 | register Lisp_Object tem; | |
1a13852e | 2189 | register struct window *o = XWINDOW (old), *n = XWINDOW (new); |
7ab12479 | 2190 | |
1a13852e MR |
2191 | /* If OLD is its frame's root window, then NEW is the new |
2192 | root window for that frame. */ | |
d3d50620 | 2193 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
f00af5b1 | 2194 | fset_root_window (XFRAME (o->frame), new); |
077288cf | 2195 | |
5f24fa51 DA |
2196 | if (setflag) |
2197 | { | |
880e6158 MR |
2198 | n->pixel_left = o->pixel_left; |
2199 | n->pixel_top = o->pixel_top; | |
2200 | n->pixel_width = o->pixel_width; | |
2201 | n->pixel_height = o->pixel_height; | |
5f24fa51 DA |
2202 | n->left_col = o->left_col; |
2203 | n->top_line = o->top_line; | |
2204 | n->total_cols = o->total_cols; | |
2205 | n->total_lines = o->total_lines; | |
e8c17b81 PE |
2206 | wset_normal_cols (n, o->normal_cols); |
2207 | wset_normal_cols (o, make_float (1.0)); | |
2208 | wset_normal_lines (n, o->normal_lines); | |
2209 | wset_normal_lines (o, make_float (1.0)); | |
1a13852e MR |
2210 | n->desired_matrix = n->current_matrix = 0; |
2211 | n->vscroll = 0; | |
2212 | memset (&n->cursor, 0, sizeof (n->cursor)); | |
1a13852e | 2213 | memset (&n->phys_cursor, 0, sizeof (n->phys_cursor)); |
c80016b3 | 2214 | n->last_cursor_vpos = 0; |
29bf4de4 DA |
2215 | #ifdef HAVE_WINDOW_SYSTEM |
2216 | n->phys_cursor_type = NO_CURSOR; | |
1a13852e | 2217 | n->phys_cursor_width = -1; |
29bf4de4 | 2218 | #endif |
1a13852e MR |
2219 | n->must_be_updated_p = 0; |
2220 | n->pseudo_window_p = 0; | |
02455cb6 DA |
2221 | n->window_end_vpos = 0; |
2222 | n->window_end_pos = 0; | |
9d93ce29 | 2223 | n->window_end_valid = 0; |
1a13852e MR |
2224 | } |
2225 | ||
d3d50620 | 2226 | tem = o->next; |
e8c17b81 | 2227 | wset_next (n, tem); |
265a9e55 | 2228 | if (!NILP (tem)) |
e8c17b81 | 2229 | wset_prev (XWINDOW (tem), new); |
7ab12479 | 2230 | |
d3d50620 | 2231 | tem = o->prev; |
e8c17b81 | 2232 | wset_prev (n, tem); |
265a9e55 | 2233 | if (!NILP (tem)) |
e8c17b81 | 2234 | wset_next (XWINDOW (tem), new); |
7ab12479 | 2235 | |
d3d50620 | 2236 | tem = o->parent; |
e8c17b81 | 2237 | wset_parent (n, tem); |
e74aeda8 DA |
2238 | if (!NILP (tem) && EQ (XWINDOW (tem)->contents, old)) |
2239 | wset_combination (XWINDOW (tem), XWINDOW (tem)->horizontal, new); | |
1a13852e MR |
2240 | } |
2241 | ||
2242 | /* If window WINDOW and its parent window are iso-combined, merge | |
2243 | WINDOW's children into those of its parent window and mark WINDOW as | |
2244 | deleted. */ | |
2245 | ||
2246 | static void | |
2247 | recombine_windows (Lisp_Object window) | |
2248 | { | |
2249 | struct window *w, *p, *c; | |
2250 | Lisp_Object parent, child; | |
748fa866 | 2251 | bool horflag; |
1a13852e MR |
2252 | |
2253 | w = XWINDOW (window); | |
d3d50620 DA |
2254 | parent = w->parent; |
2255 | if (!NILP (parent) && NILP (w->combination_limit)) | |
1a13852e MR |
2256 | { |
2257 | p = XWINDOW (parent); | |
e74aeda8 DA |
2258 | if (WINDOWP (p->contents) && WINDOWP (w->contents) |
2259 | && p->horizontal == w->horizontal) | |
1a13852e MR |
2260 | /* WINDOW and PARENT are both either a vertical or a horizontal |
2261 | combination. */ | |
2262 | { | |
e74aeda8 DA |
2263 | horflag = WINDOW_HORIZONTAL_COMBINATION_P (w); |
2264 | child = w->contents; | |
1a13852e MR |
2265 | c = XWINDOW (child); |
2266 | ||
2267 | /* Splice WINDOW's children into its parent's children and | |
2268 | assign new normal sizes. */ | |
d3d50620 | 2269 | if (NILP (w->prev)) |
e74aeda8 | 2270 | wset_combination (p, horflag, child); |
1a13852e MR |
2271 | else |
2272 | { | |
e8c17b81 PE |
2273 | wset_prev (c, w->prev); |
2274 | wset_next (XWINDOW (w->prev), child); | |
1a13852e MR |
2275 | } |
2276 | ||
2277 | while (c) | |
2278 | { | |
e8c17b81 | 2279 | wset_parent (c, parent); |
1a13852e MR |
2280 | |
2281 | if (horflag) | |
880e6158 MR |
2282 | wset_normal_cols |
2283 | (c, make_float ((double) c->pixel_width | |
2284 | / (double) p->pixel_width)); | |
1a13852e | 2285 | else |
880e6158 MR |
2286 | wset_normal_lines |
2287 | (c, make_float ((double) c->pixel_height | |
2288 | / (double) p->pixel_height)); | |
1a13852e | 2289 | |
d3d50620 | 2290 | if (NILP (c->next)) |
1a13852e | 2291 | { |
d3d50620 | 2292 | if (!NILP (w->next)) |
1a13852e | 2293 | { |
e8c17b81 PE |
2294 | wset_next (c, w->next); |
2295 | wset_prev (XWINDOW (c->next), child); | |
1a13852e MR |
2296 | } |
2297 | ||
2298 | c = 0; | |
2299 | } | |
2300 | else | |
2301 | { | |
d3d50620 | 2302 | child = c->next; |
1a13852e MR |
2303 | c = XWINDOW (child); |
2304 | } | |
2305 | } | |
7ab12479 | 2306 | |
1a13852e | 2307 | /* WINDOW can be deleted now. */ |
e74aeda8 | 2308 | wset_combination (w, 0, Qnil); |
1a13852e MR |
2309 | } |
2310 | } | |
7ab12479 | 2311 | } |
6198ccd0 MR |
2312 | |
2313 | /* If WINDOW can be deleted, delete it. */ | |
4475bec4 | 2314 | static void |
6198ccd0 MR |
2315 | delete_deletable_window (Lisp_Object window) |
2316 | { | |
2317 | if (!NILP (call1 (Qwindow_deletable_p, window))) | |
2318 | call1 (Qdelete_window, window); | |
2319 | } | |
1a13852e | 2320 | \f |
67492200 GM |
2321 | /*********************************************************************** |
2322 | Window List | |
2323 | ***********************************************************************/ | |
2324 | ||
f95464e4 GM |
2325 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
2326 | pointer. This is a callback function for foreach_window, used in | |
496e208e | 2327 | the window_list function. */ |
67492200 GM |
2328 | |
2329 | static int | |
971de7fb | 2330 | add_window_to_list (struct window *w, void *user_data) |
67492200 | 2331 | { |
7d652d97 | 2332 | Lisp_Object *list = user_data; |
67492200 GM |
2333 | Lisp_Object window; |
2334 | XSETWINDOW (window, w); | |
212116d6 | 2335 | *list = Fcons (window, *list); |
67492200 GM |
2336 | return 1; |
2337 | } | |
2338 | ||
2339 | ||
2340 | /* Return a list of all windows, for use by next_window. If | |
2341 | Vwindow_list is a list, return that list. Otherwise, build a new | |
2342 | list, cache it in Vwindow_list, and return that. */ | |
2343 | ||
655ab9a3 | 2344 | Lisp_Object |
971de7fb | 2345 | window_list (void) |
67492200 GM |
2346 | { |
2347 | if (!CONSP (Vwindow_list)) | |
2348 | { | |
5b04e9f9 | 2349 | Lisp_Object tail, frame; |
212116d6 | 2350 | |
67492200 | 2351 | Vwindow_list = Qnil; |
5b04e9f9 | 2352 | FOR_EACH_FRAME (tail, frame) |
212116d6 GM |
2353 | { |
2354 | Lisp_Object args[2]; | |
2355 | ||
2356 | /* We are visiting windows in canonical order, and add | |
2357 | new windows at the front of args[1], which means we | |
2358 | have to reverse this list at the end. */ | |
2359 | args[1] = Qnil; | |
5b04e9f9 | 2360 | foreach_window (XFRAME (frame), add_window_to_list, &args[1]); |
212116d6 GM |
2361 | args[0] = Vwindow_list; |
2362 | args[1] = Fnreverse (args[1]); | |
2363 | Vwindow_list = Fnconc (2, args); | |
2364 | } | |
67492200 | 2365 | } |
177c0ea7 | 2366 | |
67492200 GM |
2367 | return Vwindow_list; |
2368 | } | |
2369 | ||
2370 | ||
118ea242 GM |
2371 | /* Value is non-zero if WINDOW satisfies the constraints given by |
2372 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 2373 | |
118ea242 GM |
2374 | MINIBUF t means WINDOW may be minibuffer windows. |
2375 | `lambda' means WINDOW may not be a minibuffer window. | |
2376 | a window means a specific minibuffer window | |
67492200 | 2377 | |
118ea242 GM |
2378 | ALL_FRAMES t means search all frames, |
2379 | nil means search just current frame, | |
aa248733 MS |
2380 | `visible' means search just visible frames on the |
2381 | current terminal, | |
2382 | 0 means search visible and iconified frames on the | |
2383 | current terminal, | |
118ea242 GM |
2384 | a window means search the frame that window belongs to, |
2385 | a frame means consider windows on that frame, only. */ | |
67492200 | 2386 | |
d7e6881a DA |
2387 | static bool |
2388 | candidate_window_p (Lisp_Object window, Lisp_Object owindow, | |
2389 | Lisp_Object minibuf, Lisp_Object all_frames) | |
67492200 GM |
2390 | { |
2391 | struct window *w = XWINDOW (window); | |
d3d50620 | 2392 | struct frame *f = XFRAME (w->frame); |
d7e6881a | 2393 | bool candidate_p = 1; |
67492200 | 2394 | |
e74aeda8 | 2395 | if (!BUFFERP (w->contents)) |
67492200 GM |
2396 | candidate_p = 0; |
2397 | else if (MINI_WINDOW_P (w) | |
2398 | && (EQ (minibuf, Qlambda) | |
2399 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
2400 | { | |
2401 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
2402 | If it is a window, consider only that one. */ | |
2403 | candidate_p = 0; | |
2404 | } | |
118ea242 GM |
2405 | else if (EQ (all_frames, Qt)) |
2406 | candidate_p = 1; | |
67492200 | 2407 | else if (NILP (all_frames)) |
118ea242 | 2408 | { |
a54e2c05 | 2409 | eassert (WINDOWP (owindow)); |
d3d50620 | 2410 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); |
118ea242 | 2411 | } |
67492200 GM |
2412 | else if (EQ (all_frames, Qvisible)) |
2413 | { | |
de509a60 | 2414 | candidate_p = FRAME_VISIBLE_P (f) |
d3d50620 | 2415 | && (FRAME_TERMINAL (XFRAME (w->frame)) |
de509a60 SM |
2416 | == FRAME_TERMINAL (XFRAME (selected_frame))); |
2417 | ||
67492200 GM |
2418 | } |
2419 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
2420 | { | |
ca2d5566 SM |
2421 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
2422 | #ifdef HAVE_X_WINDOWS | |
2423 | /* Yuck!! If we've just created the frame and the | |
2424 | window-manager requested the user to place it | |
2425 | manually, the window may still not be considered | |
2426 | `visible'. I'd argue it should be at least | |
2427 | something like `iconified', but don't know how to do | |
2428 | that yet. --Stef */ | |
2429 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
2430 | && !f->output_data.x->has_been_visible) | |
2431 | #endif | |
de509a60 | 2432 | ) |
d3d50620 | 2433 | && (FRAME_TERMINAL (XFRAME (w->frame)) |
de509a60 | 2434 | == FRAME_TERMINAL (XFRAME (selected_frame))); |
67492200 | 2435 | } |
67492200 GM |
2436 | else if (WINDOWP (all_frames)) |
2437 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
d3d50620 DA |
2438 | || EQ (XWINDOW (all_frames)->frame, w->frame) |
2439 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 | 2440 | else if (FRAMEP (all_frames)) |
d3d50620 | 2441 | candidate_p = EQ (all_frames, w->frame); |
67492200 GM |
2442 | |
2443 | return candidate_p; | |
2444 | } | |
2445 | ||
2446 | ||
2447 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
aa248733 MS |
2448 | Fwindow_list. See candidate_window_p for the meaning of WINDOW, |
2449 | MINIBUF, and ALL_FRAMES. */ | |
67492200 GM |
2450 | |
2451 | static void | |
971de7fb | 2452 | decode_next_window_args (Lisp_Object *window, Lisp_Object *minibuf, Lisp_Object *all_frames) |
67492200 | 2453 | { |
b9e9df47 | 2454 | struct window *w = decode_live_window (*window); |
177c0ea7 | 2455 | |
b6a9e8b1 | 2456 | XSETWINDOW (*window, w); |
67492200 GM |
2457 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
2458 | does. */ | |
2459 | if (NILP (*minibuf)) | |
2460 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
2461 | else if (!EQ (*minibuf, Qt)) | |
2462 | *minibuf = Qlambda; | |
177c0ea7 | 2463 | |
67492200 GM |
2464 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
2465 | => count none of them, or a specific minibuffer window (the | |
2466 | active one) to count. */ | |
2467 | ||
2468 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
2469 | if (NILP (*all_frames)) | |
f00af5b1 | 2470 | *all_frames |
3a45383a | 2471 | = (!EQ (*minibuf, Qlambda) |
b9e9df47 | 2472 | ? FRAME_MINIBUF_WINDOW (XFRAME (w->frame)) |
3a45383a | 2473 | : Qnil); |
67492200 GM |
2474 | else if (EQ (*all_frames, Qvisible)) |
2475 | ; | |
0f8fe9a2 | 2476 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
2477 | ; |
2478 | else if (FRAMEP (*all_frames)) | |
2479 | ; | |
2480 | else if (!EQ (*all_frames, Qt)) | |
2481 | *all_frames = Qnil; | |
67492200 GM |
2482 | } |
2483 | ||
2484 | ||
ab6d1131 | 2485 | /* Return the next or previous window of WINDOW in cyclic ordering |
67492200 GM |
2486 | of windows. NEXT_P non-zero means return the next window. See the |
2487 | documentation string of next-window for the meaning of MINIBUF and | |
2488 | ALL_FRAMES. */ | |
2489 | ||
2490 | static Lisp_Object | |
971de7fb | 2491 | next_window (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames, int next_p) |
67492200 GM |
2492 | { |
2493 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 2494 | |
67492200 GM |
2495 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
2496 | return the first window on the frame. */ | |
2497 | if (FRAMEP (all_frames) | |
d3d50620 | 2498 | && !EQ (all_frames, XWINDOW (window)->frame)) |
67492200 | 2499 | return Fframe_first_window (all_frames); |
177c0ea7 | 2500 | |
212116d6 | 2501 | if (next_p) |
67492200 GM |
2502 | { |
2503 | Lisp_Object list; | |
177c0ea7 | 2504 | |
67492200 GM |
2505 | /* Find WINDOW in the list of all windows. */ |
2506 | list = Fmemq (window, window_list ()); | |
2507 | ||
2508 | /* Scan forward from WINDOW to the end of the window list. */ | |
2509 | if (CONSP (list)) | |
2510 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 2511 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2512 | break; |
2513 | ||
2514 | /* Scan from the start of the window list up to WINDOW. */ | |
2515 | if (!CONSP (list)) | |
2516 | for (list = Vwindow_list; | |
2517 | CONSP (list) && !EQ (XCAR (list), window); | |
2518 | list = XCDR (list)) | |
118ea242 | 2519 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2520 | break; |
2521 | ||
2522 | if (CONSP (list)) | |
2523 | window = XCAR (list); | |
2524 | } | |
2525 | else | |
2526 | { | |
2527 | Lisp_Object candidate, list; | |
177c0ea7 | 2528 | |
67492200 GM |
2529 | /* Scan through the list of windows for candidates. If there are |
2530 | candidate windows in front of WINDOW, the last one of these | |
2531 | is the one we want. If there are candidates following WINDOW | |
2532 | in the list, again the last one of these is the one we want. */ | |
2533 | candidate = Qnil; | |
2534 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
2535 | { | |
2536 | if (EQ (XCAR (list), window)) | |
2537 | { | |
2538 | if (WINDOWP (candidate)) | |
2539 | break; | |
2540 | } | |
118ea242 GM |
2541 | else if (candidate_window_p (XCAR (list), window, minibuf, |
2542 | all_frames)) | |
67492200 GM |
2543 | candidate = XCAR (list); |
2544 | } | |
2545 | ||
2546 | if (WINDOWP (candidate)) | |
2547 | window = candidate; | |
2548 | } | |
2549 | ||
2550 | return window; | |
2551 | } | |
7ab12479 | 2552 | |
7ab12479 | 2553 | |
a7ca3326 | 2554 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
a9b9b7f5 | 2555 | doc: /* Return live window after WINDOW in the cyclic ordering of windows. |
87e68db4 | 2556 | WINDOW must be a live window and defaults to the selected one. The |
9397e56f MR |
2557 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to |
2558 | consider. | |
2559 | ||
2560 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2561 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2562 | even if the minibuffer is not active. Any other value means do not | |
2563 | consider the minibuffer window even if the minibuffer is active. | |
2564 | ||
2565 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2566 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2567 | minibuffer counts, consider all windows on all frames that share that | |
2568 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2569 | meanings: | |
2570 | ||
2571 | - t means consider all windows on all existing frames. | |
2572 | ||
2573 | - `visible' means consider all windows on all visible frames. | |
2574 | ||
2575 | - 0 (the number zero) means consider all windows on all visible and | |
2576 | iconified frames. | |
2577 | ||
2578 | - A frame means consider all windows on that frame only. | |
ab6d1131 | 2579 | |
ab6d1131 | 2580 | Anything else means consider all windows on WINDOW's frame and no |
9397e56f | 2581 | others. |
fdb82f93 PJ |
2582 | |
2583 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
2584 | `next-window' to iterate through the entire cycle of acceptable | |
2585 | windows, eventually ending up back at the window you started with. | |
2586 | `previous-window' traverses the same cycle, in the reverse order. */) | |
5842a27b | 2587 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2588 | { |
67492200 | 2589 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
2590 | } |
2591 | ||
67492200 | 2592 | |
26f6279d | 2593 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
a9b9b7f5 | 2594 | doc: /* Return live window before WINDOW in the cyclic ordering of windows. |
9397e56f MR |
2595 | WINDOW must be a live window and defaults to the selected one. The |
2596 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to | |
2597 | consider. | |
2598 | ||
2599 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2600 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2601 | even if the minibuffer is not active. Any other value means do not | |
2602 | consider the minibuffer window even if the minibuffer is active. | |
2603 | ||
2604 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2605 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2606 | minibuffer counts, consider all windows on all frames that share that | |
2607 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2608 | meanings: | |
2609 | ||
2610 | - t means consider all windows on all existing frames. | |
2611 | ||
2612 | - `visible' means consider all windows on all visible frames. | |
2613 | ||
2614 | - 0 (the number zero) means consider all windows on all visible and | |
2615 | iconified frames. | |
2616 | ||
2617 | - A frame means consider all windows on that frame only. | |
2618 | ||
2619 | Anything else means consider all windows on WINDOW's frame and no | |
2620 | others. | |
ab6d1131 MR |
2621 | |
2622 | If you use consistent values for MINIBUF and ALL-FRAMES, you can | |
2623 | use `previous-window' to iterate through the entire cycle of | |
2624 | acceptable windows, eventually ending up back at the window you | |
2625 | started with. `next-window' traverses the same cycle, in the | |
2626 | reverse order. */) | |
5842a27b | 2627 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2628 | { |
67492200 | 2629 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2630 | } |
2631 | ||
67492200 | 2632 | |
ab6d1131 | 2633 | /* Return a list of windows in cyclic ordering. Arguments are like |
cd2904bd GM |
2634 | for `next-window'. */ |
2635 | ||
2636 | static Lisp_Object | |
971de7fb | 2637 | window_list_1 (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 | 2638 | { |
403de3b4 | 2639 | Lisp_Object tail, list, rest; |
67492200 GM |
2640 | |
2641 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2642 | list = Qnil; | |
177c0ea7 | 2643 | |
67492200 | 2644 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2645 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2646 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2647 | |
403de3b4 RS |
2648 | /* Rotate the list to start with WINDOW. */ |
2649 | list = Fnreverse (list); | |
2650 | rest = Fmemq (window, list); | |
2651 | if (!NILP (rest) && !EQ (rest, list)) | |
2652 | { | |
1725a7c9 | 2653 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2654 | ; |
2655 | XSETCDR (tail, Qnil); | |
2656 | list = nconc2 (rest, list); | |
2657 | } | |
2658 | return list; | |
67492200 GM |
2659 | } |
2660 | ||
2661 | ||
abde8f8c MR |
2662 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, |
2663 | doc: /* Return a list of windows on FRAME, starting with WINDOW. | |
2664 | FRAME nil or omitted means use the selected frame. | |
49745b39 | 2665 | WINDOW nil or omitted means use the window selected within FRAME. |
abde8f8c MR |
2666 | MINIBUF t means include the minibuffer window, even if it isn't active. |
2667 | MINIBUF nil or omitted means include the minibuffer window only | |
2668 | if it's active. | |
2669 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2670 | (Lisp_Object frame, Lisp_Object minibuf, Lisp_Object window) | |
2671 | { | |
2672 | if (NILP (window)) | |
e69b0960 | 2673 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
abde8f8c MR |
2674 | CHECK_WINDOW (window); |
2675 | if (NILP (frame)) | |
2676 | frame = selected_frame; | |
2677 | ||
d3d50620 | 2678 | if (!EQ (frame, XWINDOW (window)->frame)) |
abde8f8c MR |
2679 | error ("Window is on a different frame"); |
2680 | ||
2681 | return window_list_1 (window, minibuf, frame); | |
2682 | } | |
2683 | ||
2684 | ||
1a13852e MR |
2685 | DEFUN ("window-list-1", Fwindow_list_1, Swindow_list_1, 0, 3, 0, |
2686 | doc: /* Return a list of all live windows. | |
2687 | WINDOW specifies the first window to list and defaults to the selected | |
2688 | window. | |
2689 | ||
2690 | Optional argument MINIBUF nil or omitted means consider the minibuffer | |
2691 | window only if the minibuffer is active. MINIBUF t means consider the | |
2692 | minibuffer window even if the minibuffer is not active. Any other value | |
2693 | means do not consider the minibuffer window even if the minibuffer is | |
2694 | active. | |
2695 | ||
2696 | Optional argument ALL-FRAMES nil or omitted means consider all windows | |
2697 | on WINDOW's frame, plus the minibuffer window if specified by the | |
2698 | MINIBUF argument. If the minibuffer counts, consider all windows on all | |
2699 | frames that share that minibuffer too. The following non-nil values of | |
2700 | ALL-FRAMES have special meanings: | |
2701 | ||
2702 | - t means consider all windows on all existing frames. | |
2703 | ||
2704 | - `visible' means consider all windows on all visible frames. | |
2705 | ||
2706 | - 0 (the number zero) means consider all windows on all visible and | |
2707 | iconified frames. | |
2708 | ||
2709 | - A frame means consider all windows on that frame only. | |
2710 | ||
2711 | Anything else means consider all windows on WINDOW's frame and no | |
2712 | others. | |
2713 | ||
2714 | If WINDOW is not on the list of windows returned, some other window will | |
8350f087 | 2715 | be listed first but no error is signaled. */) |
1a13852e MR |
2716 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
2717 | { | |
2718 | return window_list_1 (window, minibuf, all_frames); | |
2719 | } | |
7ab12479 JB |
2720 | \f |
2721 | /* Look at all windows, performing an operation specified by TYPE | |
2722 | with argument OBJ. | |
75d8f668 | 2723 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2724 | Qnil, look at just the selected frame; |
89bca612 | 2725 | Qvisible, look at visible frames; |
75d8f668 | 2726 | a frame, just look at windows on that frame. |
85fe3b5e | 2727 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2728 | |
2729 | enum window_loop | |
2730 | { | |
2731 | WINDOW_LOOP_UNUSED, | |
9397e56f MR |
2732 | GET_BUFFER_WINDOW, /* Arg is buffer */ |
2733 | REPLACE_BUFFER_IN_WINDOWS_SAFELY, /* Arg is buffer */ | |
2734 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ | |
e74aeda8 | 2735 | CHECK_ALL_WINDOWS /* Arg is ignored */ |
7ab12479 JB |
2736 | }; |
2737 | ||
2738 | static Lisp_Object | |
971de7fb | 2739 | window_loop (enum window_loop type, Lisp_Object obj, int mini, Lisp_Object frames) |
7ab12479 | 2740 | { |
118ea242 | 2741 | Lisp_Object window, windows, best_window, frame_arg; |
9397e56f | 2742 | int frame_best_window_flag = 0; |
118ea242 | 2743 | struct frame *f; |
ffdc852d | 2744 | struct gcpro gcpro1; |
177c0ea7 | 2745 | |
44fa5b1e JB |
2746 | /* If we're only looping through windows on a particular frame, |
2747 | frame points to that frame. If we're looping through windows | |
2748 | on all frames, frame is 0. */ | |
2749 | if (FRAMEP (frames)) | |
118ea242 | 2750 | f = XFRAME (frames); |
44fa5b1e | 2751 | else if (NILP (frames)) |
118ea242 | 2752 | f = SELECTED_FRAME (); |
7ab12479 | 2753 | else |
118ea242 | 2754 | f = NULL; |
177c0ea7 | 2755 | |
118ea242 | 2756 | if (f) |
89bca612 | 2757 | frame_arg = Qlambda; |
0f8fe9a2 | 2758 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2759 | frame_arg = frames; |
89bca612 RS |
2760 | else if (EQ (frames, Qvisible)) |
2761 | frame_arg = frames; | |
118ea242 GM |
2762 | else |
2763 | frame_arg = Qt; | |
7ab12479 | 2764 | |
89bca612 RS |
2765 | /* frame_arg is Qlambda to stick to one frame, |
2766 | Qvisible to consider all visible frames, | |
2767 | or Qt otherwise. */ | |
2768 | ||
7ab12479 | 2769 | /* Pick a window to start with. */ |
017b2bad | 2770 | if (WINDOWP (obj)) |
118ea242 GM |
2771 | window = obj; |
2772 | else if (f) | |
2773 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2774 | else |
118ea242 | 2775 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2776 | |
cd2904bd | 2777 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2778 | GCPRO1 (windows); |
7ab12479 | 2779 | best_window = Qnil; |
118ea242 | 2780 | |
e67a1dea | 2781 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2782 | { |
118ea242 | 2783 | struct window *w; |
177c0ea7 | 2784 | |
118ea242 GM |
2785 | window = XCAR (windows); |
2786 | w = XWINDOW (window); | |
177c0ea7 | 2787 | |
118ea242 GM |
2788 | /* Note that we do not pay attention here to whether the frame |
2789 | is visible, since Fwindow_list skips non-visible frames if | |
2790 | that is desired, under the control of frame_arg. */ | |
2791 | if (!MINI_WINDOW_P (w) | |
9397e56f MR |
2792 | /* For REPLACE_BUFFER_IN_WINDOWS_SAFELY, we must always |
2793 | consider all windows. */ | |
2794 | || type == REPLACE_BUFFER_IN_WINDOWS_SAFELY | |
7ab12479 JB |
2795 | || (mini && minibuf_level > 0)) |
2796 | switch (type) | |
2797 | { | |
2798 | case GET_BUFFER_WINDOW: | |
e74aeda8 | 2799 | if (EQ (w->contents, obj) |
9397e56f MR |
2800 | /* Don't find any minibuffer window except the one that |
2801 | is currently in use. */ | |
2802 | && (MINI_WINDOW_P (w) ? EQ (window, minibuf_window) : 1)) | |
118ea242 | 2803 | { |
9397e56f MR |
2804 | if (EQ (window, selected_window)) |
2805 | /* Preferably return the selected window. */ | |
2bfa3d3e | 2806 | return window; |
d3d50620 | 2807 | else if (EQ (XWINDOW (window)->frame, selected_frame) |
9397e56f MR |
2808 | && !frame_best_window_flag) |
2809 | /* Prefer windows on the current frame (but don't | |
2810 | choose another one if we have one already). */ | |
118ea242 | 2811 | { |
9397e56f MR |
2812 | best_window = window; |
2813 | frame_best_window_flag = 1; | |
7ab12479 | 2814 | } |
9397e56f MR |
2815 | else if (NILP (best_window)) |
2816 | best_window = window; | |
7ab12479 JB |
2817 | } |
2818 | break; | |
2819 | ||
9397e56f MR |
2820 | case REPLACE_BUFFER_IN_WINDOWS_SAFELY: |
2821 | /* We could simply check whether the buffer shown by window | |
2822 | is live, and show another buffer in case it isn't. */ | |
e74aeda8 | 2823 | if (EQ (w->contents, obj)) |
7ab12479 | 2824 | { |
9397e56f | 2825 | /* Undedicate WINDOW. */ |
e8c17b81 | 2826 | wset_dedicated (w, Qnil); |
9397e56f MR |
2827 | /* Make WINDOW show the buffer returned by |
2828 | other_buffer_safely, don't run any hooks. */ | |
2829 | set_window_buffer | |
e74aeda8 | 2830 | (window, other_buffer_safely (w->contents), 0, 0); |
9397e56f MR |
2831 | /* If WINDOW is the selected window, make its buffer |
2832 | current. But do so only if the window shows the | |
2833 | current buffer (Bug#6454). */ | |
2834 | if (EQ (window, selected_window) | |
e74aeda8 DA |
2835 | && XBUFFER (w->contents) == current_buffer) |
2836 | Fset_buffer (w->contents); | |
7ab12479 JB |
2837 | } |
2838 | break; | |
3f8ab7bd | 2839 | |
6b61353c | 2840 | case REDISPLAY_BUFFER_WINDOWS: |
e74aeda8 | 2841 | if (EQ (w->contents, obj)) |
6b61353c KH |
2842 | { |
2843 | mark_window_display_accurate (window, 0); | |
c98ff5dd | 2844 | w->update_mode_line = 1; |
6b61353c | 2845 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; |
2ec9db5d | 2846 | update_mode_lines = 27; |
6b61353c KH |
2847 | best_window = window; |
2848 | } | |
2849 | break; | |
2850 | ||
e74aeda8 DA |
2851 | /* Check for a leaf window that has a killed buffer |
2852 | or broken markers. */ | |
3f8ab7bd | 2853 | case CHECK_ALL_WINDOWS: |
e74aeda8 DA |
2854 | if (BUFFERP (w->contents)) |
2855 | { | |
2856 | struct buffer *b = XBUFFER (w->contents); | |
2857 | ||
2858 | if (!BUFFER_LIVE_P (b)) | |
2859 | emacs_abort (); | |
2860 | if (!MARKERP (w->start) || XMARKER (w->start)->buffer != b) | |
2861 | emacs_abort (); | |
2862 | if (!MARKERP (w->pointm) || XMARKER (w->pointm)->buffer != b) | |
2863 | emacs_abort (); | |
2864 | } | |
118ea242 | 2865 | break; |
6bbd7a29 GM |
2866 | |
2867 | case WINDOW_LOOP_UNUSED: | |
2868 | break; | |
7ab12479 | 2869 | } |
7ab12479 | 2870 | } |
7ab12479 | 2871 | |
118ea242 | 2872 | UNGCPRO; |
7ab12479 | 2873 | return best_window; |
37962e60 | 2874 | } |
605be8af | 2875 | |
3f8ab7bd RS |
2876 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2877 | ||
e3b27b31 | 2878 | extern void check_all_windows (void) EXTERNALLY_VISIBLE; |
233a4a2c | 2879 | void |
971de7fb | 2880 | check_all_windows (void) |
3f8ab7bd RS |
2881 | { |
2882 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2883 | } | |
2884 | ||
a7ca3326 | 2885 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 0, 2, 0, |
fec89261 | 2886 | doc: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none. |
496e208e MR |
2887 | BUFFER-OR-NAME may be a buffer or a buffer name and defaults to |
2888 | the current buffer. | |
2889 | ||
2890 | The optional argument ALL-FRAMES specifies the frames to consider: | |
2891 | ||
2892 | - t means consider all windows on all existing frames. | |
2893 | ||
2894 | - `visible' means consider all windows on all visible frames. | |
2895 | ||
2896 | - 0 (the number zero) means consider all windows on all visible | |
2897 | and iconified frames. | |
2898 | ||
2899 | - A frame means consider all windows on that frame only. | |
2900 | ||
2901 | Any other value of ALL-FRAMES means consider all windows on the | |
2902 | selected frame and no others. */) | |
2903 | (Lisp_Object buffer_or_name, Lisp_Object all_frames) | |
7ab12479 | 2904 | { |
fec89261 MR |
2905 | Lisp_Object buffer; |
2906 | ||
2907 | if (NILP (buffer_or_name)) | |
2908 | buffer = Fcurrent_buffer (); | |
2909 | else | |
2910 | buffer = Fget_buffer (buffer_or_name); | |
2911 | ||
017b2bad | 2912 | if (BUFFERP (buffer)) |
496e208e | 2913 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, all_frames); |
7ab12479 JB |
2914 | else |
2915 | return Qnil; | |
2916 | } | |
2917 | ||
4b66faf3 | 2918 | static Lisp_Object |
880e6158 MR |
2919 | resize_root_window (Lisp_Object window, Lisp_Object delta, Lisp_Object horizontal, Lisp_Object ignore, Lisp_Object pixelwise) |
2920 | { | |
2921 | return call5 (Qwindow_resize_root_window, window, delta, horizontal, ignore, pixelwise); | |
2922 | } | |
2923 | ||
2924 | ||
2925 | static Lisp_Object | |
2926 | window_pixel_to_total (Lisp_Object frame, Lisp_Object horizontal) | |
1a13852e | 2927 | { |
880e6158 | 2928 | return call2(Qwindow_pixel_to_total, frame, horizontal); |
1a13852e MR |
2929 | } |
2930 | ||
2931 | ||
2932 | DEFUN ("delete-other-windows-internal", Fdelete_other_windows_internal, | |
2933 | Sdelete_other_windows_internal, 0, 2, "", | |
2934 | doc: /* Make WINDOW fill its frame. | |
52162052 MR |
2935 | Only the frame WINDOW is on is affected. WINDOW must be a valid window |
2936 | and defaults to the selected one. | |
1a13852e | 2937 | |
be7f5545 MR |
2938 | Optional argument ROOT, if non-nil, must specify an internal window such |
2939 | that WINDOW is in its window subtree. If this is the case, replace ROOT | |
2940 | by WINDOW and leave alone any windows not part of ROOT's subtree. | |
1a13852e MR |
2941 | |
2942 | When WINDOW is live try to reduce display jumps by keeping the text | |
2943 | previously visible in WINDOW in the same place on the frame. Doing this | |
2944 | depends on the value of (window-start WINDOW), so if calling this | |
2945 | function in a program gives strange scrolling, make sure the | |
2946 | window-start value is reasonable when this function is called. */) | |
2947 | (Lisp_Object window, Lisp_Object root) | |
2948 | { | |
2949 | struct window *w, *r, *s; | |
2950 | struct frame *f; | |
46a4ce9e | 2951 | Lisp_Object sibling, pwindow, swindow IF_LINT (= Qnil), delta; |
c54aa166 | 2952 | ptrdiff_t startpos IF_LINT (= 0), startbyte IF_LINT (= 0); |
46a4ce9e | 2953 | int top IF_LINT (= 0), new_top, resize_failed; |
1a13852e | 2954 | |
52162052 | 2955 | w = decode_valid_window (window); |
1a13852e | 2956 | XSETWINDOW (window, w); |
d3d50620 | 2957 | f = XFRAME (w->frame); |
1a13852e MR |
2958 | |
2959 | if (NILP (root)) | |
2960 | /* ROOT is the frame's root window. */ | |
2961 | { | |
2962 | root = FRAME_ROOT_WINDOW (f); | |
2963 | r = XWINDOW (root); | |
2964 | } | |
2965 | else | |
2966 | /* ROOT must be an ancestor of WINDOW. */ | |
2967 | { | |
52162052 | 2968 | r = decode_valid_window (root); |
d3d50620 | 2969 | pwindow = XWINDOW (window)->parent; |
1a13852e MR |
2970 | while (!NILP (pwindow)) |
2971 | if (EQ (pwindow, root)) | |
2972 | break; | |
2973 | else | |
d3d50620 | 2974 | pwindow = XWINDOW (pwindow)->parent; |
1a13852e MR |
2975 | if (!EQ (pwindow, root)) |
2976 | error ("Specified root is not an ancestor of specified window"); | |
2977 | } | |
2978 | ||
2979 | if (EQ (window, root)) | |
2980 | /* A noop. */ | |
2981 | return Qnil; | |
2982 | /* I don't understand the "top > 0" part below. If we deal with a | |
2983 | standalone minibuffer it would have been caught by the preceding | |
2984 | test. */ | |
2985 | else if (MINI_WINDOW_P (w)) /* && top > 0) */ | |
2986 | error ("Can't expand minibuffer to full frame"); | |
2987 | ||
e74aeda8 | 2988 | if (BUFFERP (w->contents)) |
1a13852e | 2989 | { |
d3d50620 | 2990 | startpos = marker_position (w->start); |
c54aa166 | 2991 | startbyte = marker_byte_position (w->start); |
880e6158 MR |
2992 | top = (WINDOW_TOP_EDGE_LINE (w) |
2993 | - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w)))); | |
1a13852e MR |
2994 | /* Make sure WINDOW is the frame's selected window. */ |
2995 | if (!EQ (window, FRAME_SELECTED_WINDOW (f))) | |
2996 | { | |
d3d50620 | 2997 | if (EQ (selected_frame, w->frame)) |
1a13852e MR |
2998 | Fselect_window (window, Qnil); |
2999 | else | |
f00af5b1 | 3000 | fset_selected_window (f, window); |
1a13852e MR |
3001 | } |
3002 | } | |
3003 | else | |
3004 | { | |
be7f5545 MR |
3005 | /* See if the frame's selected window is a part of the window |
3006 | subtree rooted at WINDOW, by finding all the selected window's | |
3007 | parents and comparing each one with WINDOW. If it isn't we | |
3008 | need a new selected window for this frame. */ | |
1a13852e MR |
3009 | swindow = FRAME_SELECTED_WINDOW (f); |
3010 | while (1) | |
3011 | { | |
3012 | pwindow = swindow; | |
3013 | while (!NILP (pwindow) && !EQ (window, pwindow)) | |
d3d50620 | 3014 | pwindow = XWINDOW (pwindow)->parent; |
1a13852e MR |
3015 | |
3016 | if (EQ (window, pwindow)) | |
3017 | /* If WINDOW is an ancestor of SWINDOW, then SWINDOW is ok | |
3018 | as the new selected window. */ | |
3019 | break; | |
3020 | else | |
3021 | /* Else try the previous window of SWINDOW. */ | |
3022 | swindow = Fprevious_window (swindow, Qlambda, Qnil); | |
3023 | } | |
3024 | ||
3025 | if (!EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
3026 | { | |
d3d50620 | 3027 | if (EQ (selected_frame, w->frame)) |
1a13852e MR |
3028 | Fselect_window (swindow, Qnil); |
3029 | else | |
f00af5b1 | 3030 | fset_selected_window (f, swindow); |
1a13852e MR |
3031 | } |
3032 | } | |
3033 | ||
4d7e6e51 | 3034 | block_input (); |
4c5501e9 EZ |
3035 | if (!FRAME_INITIAL_P (f)) |
3036 | { | |
9fed9729 | 3037 | Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f); |
4c5501e9 EZ |
3038 | |
3039 | /* We are going to free the glyph matrices of WINDOW, and with | |
3040 | that we might lose any information about glyph rows that have | |
3041 | some of their glyphs highlighted in mouse face. (These rows | |
3042 | are marked with a non-zero mouse_face_p flag.) If WINDOW | |
3043 | indeed has some glyphs highlighted in mouse face, signal to | |
3044 | frame's up-to-date hook that mouse highlight was overwritten, | |
3045 | so that it will arrange for redisplaying the highlight. */ | |
3046 | if (EQ (hlinfo->mouse_face_window, window)) | |
9fed9729 | 3047 | reset_mouse_highlight (hlinfo); |
a6b1c7cc | 3048 | } |
1a13852e MR |
3049 | free_window_matrices (r); |
3050 | ||
5961ad6c | 3051 | fset_redisplay (f); |
1a13852e MR |
3052 | Vwindow_list = Qnil; |
3053 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
46a4ce9e | 3054 | resize_failed = 0; |
1a13852e | 3055 | |
e74aeda8 | 3056 | if (!WINDOW_LEAF_P (w)) |
1a13852e | 3057 | { |
be7f5545 | 3058 | /* Resize child windows vertically. */ |
880e6158 MR |
3059 | XSETINT (delta, r->pixel_height - w->pixel_height); |
3060 | w->pixel_top = r->pixel_top; | |
5f24fa51 | 3061 | w->top_line = r->top_line; |
880e6158 | 3062 | resize_root_window (window, delta, Qnil, Qnil, Qt); |
d615d6d2 | 3063 | if (window_resize_check (w, 0)) |
880e6158 MR |
3064 | { |
3065 | window_resize_apply (w, 0); | |
3066 | window_pixel_to_total (w->frame, Qnil); | |
3067 | } | |
1a13852e MR |
3068 | else |
3069 | { | |
880e6158 | 3070 | resize_root_window (window, delta, Qnil, Qt, Qt); |
d615d6d2 | 3071 | if (window_resize_check (w, 0)) |
880e6158 MR |
3072 | { |
3073 | window_resize_apply (w, 0); | |
3074 | window_pixel_to_total (w->frame, Qnil); | |
3075 | } | |
1a13852e MR |
3076 | else |
3077 | resize_failed = 1; | |
3078 | } | |
3079 | ||
be7f5545 | 3080 | /* Resize child windows horizontally. */ |
1a13852e MR |
3081 | if (!resize_failed) |
3082 | { | |
5f24fa51 | 3083 | w->left_col = r->left_col; |
880e6158 MR |
3084 | w->pixel_left = r->pixel_left; |
3085 | XSETINT (delta, r->pixel_width - w->pixel_width); | |
3086 | resize_root_window (window, delta, Qt, Qnil, Qt); | |
d615d6d2 | 3087 | if (window_resize_check (w, 1)) |
880e6158 MR |
3088 | { |
3089 | window_resize_apply (w, 1); | |
3090 | window_pixel_to_total (w->frame, Qt); | |
3091 | } | |
1a13852e MR |
3092 | else |
3093 | { | |
880e6158 | 3094 | resize_root_window (window, delta, Qt, Qt, Qt); |
d615d6d2 | 3095 | if (window_resize_check (w, 1)) |
880e6158 MR |
3096 | { |
3097 | window_resize_apply (w, 1); | |
3098 | window_pixel_to_total (w->frame, Qt); | |
3099 | } | |
1a13852e MR |
3100 | else |
3101 | resize_failed = 1; | |
3102 | } | |
3103 | } | |
3104 | ||
3105 | if (resize_failed) | |
3106 | /* Play safe, if we still can ... */ | |
3107 | { | |
3108 | window = swindow; | |
3109 | w = XWINDOW (window); | |
3110 | } | |
3111 | } | |
3112 | ||
3113 | /* Cleanly unlink WINDOW from window-tree. */ | |
d3d50620 | 3114 | if (!NILP (w->prev)) |
1a13852e MR |
3115 | /* Get SIBLING above (on the left of) WINDOW. */ |
3116 | { | |
d3d50620 | 3117 | sibling = w->prev; |
1a13852e | 3118 | s = XWINDOW (sibling); |
e8c17b81 | 3119 | wset_next (s, w->next); |
d3d50620 | 3120 | if (!NILP (s->next)) |
e8c17b81 | 3121 | wset_prev (XWINDOW (s->next), sibling); |
1a13852e MR |
3122 | } |
3123 | else | |
3124 | /* Get SIBLING below (on the right of) WINDOW. */ | |
3125 | { | |
d3d50620 | 3126 | sibling = w->next; |
1a13852e | 3127 | s = XWINDOW (sibling); |
e8c17b81 | 3128 | wset_prev (s, Qnil); |
e74aeda8 DA |
3129 | wset_combination (XWINDOW (w->parent), |
3130 | XWINDOW (w->parent)->horizontal, sibling); | |
1a13852e MR |
3131 | } |
3132 | ||
be7f5545 | 3133 | /* Delete ROOT and all child windows of ROOT. */ |
e74aeda8 | 3134 | if (WINDOWP (r->contents)) |
1a13852e | 3135 | { |
e74aeda8 DA |
3136 | delete_all_child_windows (r->contents); |
3137 | wset_combination (r, 0, Qnil); | |
1a13852e MR |
3138 | } |
3139 | ||
3140 | replace_window (root, window, 1); | |
3141 | ||
7ffe7ef6 | 3142 | /* This must become SWINDOW anyway ....... */ |
e74aeda8 | 3143 | if (BUFFERP (w->contents) && !resize_failed) |
1a13852e MR |
3144 | { |
3145 | /* Try to minimize scrolling, by setting the window start to the | |
3146 | point will cause the text at the old window start to be at the | |
3147 | same place on the frame. But don't try to do this if the | |
3148 | window start is outside the visible portion (as might happen | |
3149 | when the display is not current, due to typeahead). */ | |
3150 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
3151 | if (new_top != top | |
e74aeda8 DA |
3152 | && startpos >= BUF_BEGV (XBUFFER (w->contents)) |
3153 | && startpos <= BUF_ZV (XBUFFER (w->contents))) | |
1a13852e MR |
3154 | { |
3155 | struct position pos; | |
3156 | struct buffer *obuf = current_buffer; | |
3157 | ||
e74aeda8 | 3158 | Fset_buffer (w->contents); |
1a13852e MR |
3159 | /* This computation used to temporarily move point, but that |
3160 | can have unwanted side effects due to text properties. */ | |
c54aa166 | 3161 | pos = *vmotion (startpos, startbyte, -top, w); |
1a13852e | 3162 | |
e74aeda8 | 3163 | set_marker_both (w->start, w->contents, pos.bufpos, pos.bytepos); |
9d93ce29 | 3164 | w->window_end_valid = 0; |
c98ff5dd DA |
3165 | w->start_at_line_beg = (pos.bytepos == BEGV_BYTE |
3166 | || FETCH_BYTE (pos.bytepos - 1) == '\n'); | |
1a13852e MR |
3167 | /* We need to do this, so that the window-scroll-functions |
3168 | get called. */ | |
c98ff5dd | 3169 | w->optional_new_start = 1; |
1a13852e MR |
3170 | |
3171 | set_buffer_internal (obuf); | |
3172 | } | |
3173 | } | |
3174 | ||
bd0443bb | 3175 | adjust_frame_glyphs (f); |
4d7e6e51 | 3176 | unblock_input (); |
1a13852e MR |
3177 | |
3178 | run_window_configuration_change_hook (f); | |
3179 | ||
3180 | return Qnil; | |
3181 | } | |
3182 | ||
3183 | ||
9397e56f MR |
3184 | void |
3185 | replace_buffer_in_windows (Lisp_Object buffer) | |
7ab12479 | 3186 | { |
9397e56f | 3187 | call1 (Qreplace_buffer_in_windows, buffer); |
7ab12479 JB |
3188 | } |
3189 | ||
c6afe371 DA |
3190 | /* If BUFFER is shown in a window, safely replace it with some other |
3191 | buffer in all windows of all frames, even those on other keyboards. */ | |
ff58478b RS |
3192 | |
3193 | void | |
9397e56f | 3194 | replace_buffer_in_windows_safely (Lisp_Object buffer) |
ff58478b | 3195 | { |
c6afe371 DA |
3196 | if (buffer_window_count (XBUFFER (buffer))) |
3197 | { | |
3198 | Lisp_Object tail, frame; | |
ff58478b | 3199 | |
c6afe371 DA |
3200 | /* A single call to window_loop won't do the job because it only |
3201 | considers frames on the current keyboard. So loop manually over | |
3202 | frames, and handle each one. */ | |
3203 | FOR_EACH_FRAME (tail, frame) | |
3204 | window_loop (REPLACE_BUFFER_IN_WINDOWS_SAFELY, buffer, 1, frame); | |
3205 | } | |
ff58478b | 3206 | } |
c6afe371 | 3207 | |
880e6158 MR |
3208 | /* If *HEIGHT or *WIDTH are too small a size for FRAME, set them to the |
3209 | minimum allowable size. PIXELWISE means interpret these as pixel | |
3210 | sizes. */ | |
5500c422 | 3211 | |
605be8af | 3212 | void |
880e6158 | 3213 | check_frame_size (struct frame *frame, int *width, int *height, bool pixelwise) |
a481b3ea | 3214 | { |
628df3bf | 3215 | /* For height, we have to see: |
54b8bcb5 RS |
3216 | how many windows the frame has at minimum (one or two), |
3217 | and whether it has a menu bar or other special stuff at the top. */ | |
880e6158 MR |
3218 | if (pixelwise) |
3219 | { | |
3220 | int min_height = MIN_SAFE_WINDOW_HEIGHT * FRAME_LINE_HEIGHT (frame); | |
3221 | int min_width = MIN_SAFE_WINDOW_WIDTH * FRAME_COLUMN_WIDTH (frame); | |
177c0ea7 | 3222 | |
880e6158 MR |
3223 | if (!FRAME_MINIBUF_ONLY_P (frame) && FRAME_HAS_MINIBUF_P (frame)) |
3224 | min_height = 2 * min_height; | |
a481b3ea | 3225 | |
880e6158 | 3226 | min_height += FRAME_TOP_MARGIN_HEIGHT (frame); |
7d7ccb88 | 3227 | min_height += FRAME_INTERNAL_BORDER_WIDTH (frame); |
880e6158 MR |
3228 | |
3229 | if (*height < min_height) | |
3230 | *height = min_height; | |
3231 | if (*width < min_width) | |
3232 | *width = min_width; | |
3233 | } | |
3234 | else | |
3235 | { | |
3236 | int min_height | |
3237 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
3238 | ? MIN_SAFE_WINDOW_HEIGHT | |
3239 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
3240 | ||
3241 | if (FRAME_TOP_MARGIN (frame) > 0) | |
3242 | min_height += FRAME_TOP_MARGIN (frame); | |
3243 | ||
3244 | if (*height < min_height) | |
3245 | *height = min_height; | |
3246 | if (*width < MIN_SAFE_WINDOW_WIDTH) | |
3247 | *width = MIN_SAFE_WINDOW_WIDTH; | |
3248 | } | |
a481b3ea JB |
3249 | } |
3250 | ||
79fd290e | 3251 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
3252 | Return 1 if window width is ok after adjustment; 0 if window |
3253 | is still too narrow. */ | |
3254 | ||
3255 | static int | |
971de7fb | 3256 | adjust_window_margins (struct window *w) |
949cf20f | 3257 | { |
880e6158 MR |
3258 | int box_width = (WINDOW_PIXEL_WIDTH (w) |
3259 | - WINDOW_FRINGES_WIDTH (w) | |
3260 | - WINDOW_SCROLL_BAR_AREA_WIDTH (w)); | |
3261 | int margin_width = WINDOW_MARGINS_WIDTH (w); | |
949cf20f | 3262 | |
880e6158 | 3263 | if (box_width - margin_width >= MIN_SAFE_WINDOW_PIXEL_WIDTH (w)) |
949cf20f KS |
3264 | return 1; |
3265 | ||
880e6158 | 3266 | if (margin_width < 0 || box_width < MIN_SAFE_WINDOW_PIXEL_WIDTH (w)) |
949cf20f | 3267 | return 0; |
880e6158 MR |
3268 | else |
3269 | /* Window's text area is too narrow, but reducing the window | |
3270 | margins will fix that. */ | |
949cf20f | 3271 | { |
880e6158 MR |
3272 | int unit = WINDOW_FRAME_COLUMN_WIDTH (w); |
3273 | ||
3274 | margin_width = box_width - MIN_SAFE_WINDOW_PIXEL_WIDTH (w); | |
3275 | ||
3276 | if (WINDOW_RIGHT_MARGIN_WIDTH (w) > 0) | |
3277 | { | |
3278 | if (WINDOW_LEFT_MARGIN_WIDTH (w) > 0) | |
3279 | w->left_margin_cols = w->right_margin_cols = | |
3280 | margin_width / (2 * unit); | |
3281 | else | |
3282 | w->right_margin_cols = margin_width / unit; | |
3283 | } | |
949cf20f | 3284 | else |
880e6158 MR |
3285 | w->left_margin_cols = margin_width / unit; |
3286 | ||
3287 | return 1; | |
949cf20f | 3288 | } |
949cf20f | 3289 | } |
562dd5e9 | 3290 | \f |
9397e56f MR |
3291 | /* The following three routines are needed for running a window's |
3292 | configuration change hook. */ | |
562dd5e9 MR |
3293 | static void |
3294 | run_funs (Lisp_Object funs) | |
3295 | { | |
3296 | for (; CONSP (funs); funs = XCDR (funs)) | |
3297 | if (!EQ (XCAR (funs), Qt)) | |
3298 | call0 (XCAR (funs)); | |
3299 | } | |
6b61353c | 3300 | |
27e498e6 | 3301 | static void |
9397e56f MR |
3302 | select_window_norecord (Lisp_Object window) |
3303 | { | |
27e498e6 PE |
3304 | if (WINDOW_LIVE_P (window)) |
3305 | Fselect_window (window, Qt); | |
9397e56f MR |
3306 | } |
3307 | ||
27e498e6 | 3308 | static void |
9397e56f MR |
3309 | select_frame_norecord (Lisp_Object frame) |
3310 | { | |
27e498e6 PE |
3311 | if (FRAME_LIVE_P (XFRAME (frame))) |
3312 | Fselect_frame (frame, Qt); | |
9397e56f | 3313 | } |
6b61353c | 3314 | |
562dd5e9 MR |
3315 | void |
3316 | run_window_configuration_change_hook (struct frame *f) | |
3317 | { | |
2bfa3d3e | 3318 | dynwind_begin (); |
562dd5e9 MR |
3319 | Lisp_Object frame, global_wcch |
3320 | = Fdefault_value (Qwindow_configuration_change_hook); | |
3321 | XSETFRAME (frame, f); | |
6b61353c | 3322 | |
2bfa3d3e BT |
3323 | if (NILP (Vrun_hooks) || !NILP (inhibit_lisp_code)) { |
3324 | dynwind_end (); | |
562dd5e9 | 3325 | return; |
2bfa3d3e | 3326 | } |
6b61353c | 3327 | |
562dd5e9 MR |
3328 | /* Use the right buffer. Matters when running the local hooks. */ |
3329 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
6b61353c | 3330 | { |
66322887 | 3331 | record_unwind_current_buffer (); |
562dd5e9 MR |
3332 | Fset_buffer (Fwindow_buffer (Qnil)); |
3333 | } | |
6a44ffb3 | 3334 | |
1a13852e MR |
3335 | if (SELECTED_FRAME () != f) |
3336 | { | |
d2a95ffb | 3337 | record_unwind_protect (select_frame_norecord, selected_frame); |
1a13852e MR |
3338 | select_frame_norecord (frame); |
3339 | } | |
3340 | ||
6a44ffb3 SM |
3341 | /* Look for buffer-local values. */ |
3342 | { | |
3343 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
3344 | for (; CONSP (windows); windows = XCDR (windows)) | |
3345 | { | |
3346 | Lisp_Object window = XCAR (windows); | |
3347 | Lisp_Object buffer = Fwindow_buffer (window); | |
3348 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
3349 | buffer))) | |
3350 | { | |
2bfa3d3e | 3351 | dynwind_begin (); |
d2a95ffb | 3352 | record_unwind_protect (select_window_norecord, selected_window); |
6a44ffb3 SM |
3353 | select_window_norecord (window); |
3354 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
3355 | buffer)); | |
2bfa3d3e | 3356 | dynwind_end (); |
fec89261 | 3357 | } |
6a44ffb3 SM |
3358 | } |
3359 | } | |
047aaeb9 | 3360 | |
6a44ffb3 | 3361 | run_funs (global_wcch); |
2bfa3d3e | 3362 | dynwind_end (); |
ef264c42 SM |
3363 | } |
3364 | ||
1a13852e | 3365 | DEFUN ("run-window-configuration-change-hook", Frun_window_configuration_change_hook, |
d9f07150 | 3366 | Srun_window_configuration_change_hook, 0, 1, 0, |
68f8f1c0 | 3367 | doc: /* Run `window-configuration-change-hook' for FRAME. |
d9f07150 | 3368 | If FRAME is omitted or nil, it defaults to the selected frame. */) |
c4b6914d | 3369 | (Lisp_Object frame) |
1a13852e | 3370 | { |
d9f07150 | 3371 | run_window_configuration_change_hook (decode_live_frame (frame)); |
1a13852e MR |
3372 | return Qnil; |
3373 | } | |
3374 | ||
880e6158 MR |
3375 | DEFUN ("run-window-scroll-functions", Frun_window_scroll_functions, |
3376 | Srun_window_scroll_functions, 0, 1, 0, | |
3377 | doc: /* Run `window-scroll-functions' for WINDOW. | |
3378 | If WINDOW is omitted or nil, it defaults to the selected window. */) | |
3379 | (Lisp_Object window) | |
3380 | { | |
3381 | if (! NILP (Vwindow_scroll_functions)) | |
3382 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
3383 | Fmarker_position (decode_live_window (window)->start)); | |
3384 | return Qnil; | |
3385 | } | |
3386 | ||
3387 | /* Make WINDOW display BUFFER. RUN_HOOKS_P non-zero means it's allowed | |
3388 | to run hooks. See make_frame for a case where it's not allowed. | |
3389 | KEEP_MARGINS_P non-zero means that the current margins, fringes, and | |
3390 | scroll-bar settings of the window are not reset from the buffer's | |
3391 | local settings. */ | |
7ab12479 | 3392 | |
5500c422 | 3393 | void |
748fa866 DA |
3394 | set_window_buffer (Lisp_Object window, Lisp_Object buffer, |
3395 | bool run_hooks_p, bool keep_margins_p) | |
5500c422 GM |
3396 | { |
3397 | struct window *w = XWINDOW (window); | |
3398 | struct buffer *b = XBUFFER (buffer); | |
2bfa3d3e | 3399 | dynwind_begin (); |
880e6158 | 3400 | bool samebuf = EQ (buffer, w->contents); |
7ab12479 | 3401 | |
e8c17b81 | 3402 | wset_buffer (w, buffer); |
86e48436 RS |
3403 | |
3404 | if (EQ (window, selected_window)) | |
39eb03f1 | 3405 | bset_last_selected_window (b, window); |
beb4e312 | 3406 | |
c49a0495 KS |
3407 | /* Let redisplay errors through. */ |
3408 | b->display_error_modiff = 0; | |
3409 | ||
beb4e312 | 3410 | /* Update time stamps of buffer display. */ |
4b4deea2 | 3411 | if (INTEGERP (BVAR (b, display_count))) |
39eb03f1 PE |
3412 | bset_display_count (b, make_number (XINT (BVAR (b, display_count)) + 1)); |
3413 | bset_display_time (b, Fcurrent_time ()); | |
86e48436 | 3414 | |
02455cb6 DA |
3415 | w->window_end_pos = 0; |
3416 | w->window_end_vpos = 0; | |
c80016b3 | 3417 | w->last_cursor_vpos = 0; |
9d93ce29 | 3418 | |
c3b232e4 | 3419 | if (!(keep_margins_p && samebuf)) |
23fe745a | 3420 | { /* If we're not actually changing the buffer, don't reset hscroll and |
c3b232e4 SM |
3421 | vscroll. This case happens for example when called from |
3422 | change_frame_size_1, where we use a dummy call to | |
3423 | Fset_window_buffer on the frame's selected window (and no other) | |
3424 | just in order to run window-configuration-change-hook. | |
3425 | Resetting hscroll and vscroll here is problematic for things like | |
3426 | image-mode and doc-view-mode since it resets the image's position | |
3427 | whenever we resize the frame. */ | |
80b00b08 | 3428 | w->hscroll = w->min_hscroll = 0; |
c3b232e4 | 3429 | w->vscroll = 0; |
d3d50620 DA |
3430 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
3431 | set_marker_restricted (w->start, | |
c3b232e4 SM |
3432 | make_number (b->last_window_start), |
3433 | buffer); | |
c98ff5dd DA |
3434 | w->start_at_line_beg = 0; |
3435 | w->force_start = 0; | |
c3b232e4 SM |
3436 | } |
3437 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
3438 | I doubt it's worth the trouble. */ | |
5961ad6c | 3439 | wset_redisplay (w); |
0d9cba29 | 3440 | w->update_mode_line = true; |
5b03d3c0 | 3441 | |
8917710e SM |
3442 | /* We must select BUFFER to run the window-scroll-functions and to look up |
3443 | the buffer-local value of Vwindow_point_insertion_type. */ | |
3444 | record_unwind_current_buffer (); | |
3445 | Fset_buffer (buffer); | |
5b03d3c0 | 3446 | |
d3d50620 | 3447 | XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type); |
a1562258 | 3448 | |
949cf20f KS |
3449 | if (!keep_margins_p) |
3450 | { | |
3451 | /* Set left and right marginal area width etc. from buffer. */ | |
25554267 DA |
3452 | set_window_fringes (w, BVAR (b, left_fringe_width), |
3453 | BVAR (b, right_fringe_width), | |
3454 | BVAR (b, fringes_outside_margins)); | |
3455 | set_window_scroll_bars (w, BVAR (b, scroll_bar_width), | |
3456 | BVAR (b, vertical_scroll_bar_type), Qnil); | |
3457 | set_window_margins (w, BVAR (b, left_margin_cols), | |
3458 | BVAR (b, right_margin_cols)); | |
3459 | apply_window_adjustment (w); | |
949cf20f | 3460 | } |
7ab12479 | 3461 | |
5500c422 GM |
3462 | if (run_hooks_p) |
3463 | { | |
3464 | if (! NILP (Vwindow_scroll_functions)) | |
3465 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
d3d50620 | 3466 | Fmarker_position (w->start)); |
880e6158 MR |
3467 | if (!samebuf) |
3468 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); | |
5500c422 | 3469 | } |
543f5fb1 | 3470 | |
2bfa3d3e | 3471 | dynwind_end (); |
5500c422 | 3472 | } |
5b03d3c0 | 3473 | |
a7ca3326 | 3474 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
880e6158 | 3475 | doc: /* Make WINDOW display BUFFER-OR-NAME. |
52162052 | 3476 | WINDOW must be a live window and defaults to the selected one. |
9397e56f MR |
3477 | BUFFER-OR-NAME must be a buffer or the name of an existing buffer. |
3478 | ||
3479 | Optional third argument KEEP-MARGINS non-nil means that WINDOW's current | |
3480 | display margins, fringe widths, and scroll bar settings are preserved; | |
3481 | the default is to reset these from the local settings for BUFFER-OR-NAME | |
3482 | or the frame defaults. Return nil. | |
d653c8cc | 3483 | |
7bfac547 MR |
3484 | This function throws an error when WINDOW is strongly dedicated to its |
3485 | buffer (that is `window-dedicated-p' returns t for WINDOW) and does not | |
3486 | already display BUFFER-OR-NAME. | |
6cb4a892 | 3487 | |
8fef9de1 MR |
3488 | This function runs `window-scroll-functions' before running |
3489 | `window-configuration-change-hook'. */) | |
5842a27b | 3490 | (register Lisp_Object window, Lisp_Object buffer_or_name, Lisp_Object keep_margins) |
5500c422 | 3491 | { |
d653c8cc | 3492 | register Lisp_Object tem, buffer; |
52162052 | 3493 | register struct window *w = decode_live_window (window); |
5500c422 | 3494 | |
bed0c171 | 3495 | XSETWINDOW (window, w); |
d653c8cc | 3496 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 3497 | CHECK_BUFFER (buffer); |
e578f381 | 3498 | if (!BUFFER_LIVE_P (XBUFFER (buffer))) |
5500c422 GM |
3499 | error ("Attempt to display deleted buffer"); |
3500 | ||
e74aeda8 | 3501 | tem = w->contents; |
aac0c6e3 MR |
3502 | if (NILP (tem)) |
3503 | error ("Window is deleted"); | |
822995f8 | 3504 | else |
5500c422 | 3505 | { |
9397e56f MR |
3506 | if (!EQ (tem, buffer)) |
3507 | { | |
d3d50620 | 3508 | if (EQ (w->dedicated, Qt)) |
9397e56f MR |
3509 | /* WINDOW is strongly dedicated to its buffer, signal an |
3510 | error. */ | |
3511 | error ("Window is dedicated to `%s'", SDATA (BVAR (XBUFFER (tem), name))); | |
3512 | else | |
3513 | /* WINDOW is weakly dedicated to its buffer, reset | |
e4769531 | 3514 | dedication. */ |
e8c17b81 | 3515 | wset_dedicated (w, Qnil); |
9397e56f MR |
3516 | |
3517 | call1 (Qrecord_window_buffer, window); | |
3518 | } | |
5500c422 GM |
3519 | |
3520 | unshow_buffer (w); | |
3521 | } | |
3522 | ||
949cf20f | 3523 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 | 3524 | |
9397e56f | 3525 | return Qnil; |
c6932ecd | 3526 | } |
b7354ddf | 3527 | \f |
7e5cf297 | 3528 | static Lisp_Object |
971de7fb | 3529 | display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, Lisp_Object override_frame) |
d07f802a | 3530 | { |
87478b52 | 3531 | return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); |
d07f802a RS |
3532 | } |
3533 | ||
6b61353c KH |
3534 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, |
3535 | 0, 1, 0, | |
5a1048a5 | 3536 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 3537 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3538 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c | 3539 | displaying that buffer. */) |
5842a27b | 3540 | (Lisp_Object object) |
6b61353c KH |
3541 | { |
3542 | if (NILP (object)) | |
3543 | { | |
94ae2ad4 | 3544 | windows_or_buffers_changed = 29; |
2ec9db5d | 3545 | update_mode_lines = 28; |
6b61353c KH |
3546 | return Qt; |
3547 | } | |
3548 | ||
3549 | if (WINDOWP (object)) | |
3550 | { | |
3551 | struct window *w = XWINDOW (object); | |
3552 | mark_window_display_accurate (object, 0); | |
c98ff5dd | 3553 | w->update_mode_line = 1; |
e74aeda8 DA |
3554 | if (BUFFERP (w->contents)) |
3555 | XBUFFER (w->contents)->prevent_redisplay_optimizations_p = 1; | |
2ec9db5d | 3556 | update_mode_lines = 29; |
6b61353c KH |
3557 | return Qt; |
3558 | } | |
0cc1039f | 3559 | |
6b61353c KH |
3560 | if (STRINGP (object)) |
3561 | object = Fget_buffer (object); | |
c6afe371 DA |
3562 | if (BUFFERP (object) && BUFFER_LIVE_P (XBUFFER (object)) |
3563 | && buffer_window_count (XBUFFER (object))) | |
6b61353c | 3564 | { |
c6afe371 DA |
3565 | /* If buffer is live and shown in at least one window, find |
3566 | all windows showing this buffer and force update of them. */ | |
6b61353c KH |
3567 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); |
3568 | return NILP (object) ? Qnil : Qt; | |
3569 | } | |
3570 | ||
3571 | /* If nothing suitable was found, just return. | |
3572 | We could signal an error, but this feature will typically be used | |
3573 | asynchronously in timers or process sentinels, so we don't. */ | |
3574 | return Qnil; | |
3575 | } | |
3576 | ||
1f76f6f5 | 3577 | /* Obsolete since 24.3. */ |
7ab12479 | 3578 | void |
971de7fb | 3579 | temp_output_buffer_show (register Lisp_Object buf) |
7ab12479 JB |
3580 | { |
3581 | register struct buffer *old = current_buffer; | |
3582 | register Lisp_Object window; | |
3583 | register struct window *w; | |
3584 | ||
39eb03f1 | 3585 | bset_directory (XBUFFER (buf), BVAR (current_buffer, directory)); |
bccd3dd1 | 3586 | |
7ab12479 | 3587 | Fset_buffer (buf); |
c6367666 | 3588 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3589 | BEGV = BEG; |
3590 | ZV = Z; | |
3591 | SET_PT (BEG); | |
7ab12479 JB |
3592 | set_buffer_internal (old); |
3593 | ||
e67a1dea | 3594 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 | 3595 | call1 (Vtemp_buffer_show_function, buf); |
0a357e98 | 3596 | else if (WINDOW_LIVE_P (window = display_buffer (buf, Qnil, Qnil))) |
7ab12479 | 3597 | { |
d3d50620 | 3598 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3599 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3600 | Vminibuf_scroll_window = window; |
3601 | w = XWINDOW (window); | |
80b00b08 DA |
3602 | w->hscroll = 0; |
3603 | w->min_hscroll = 0; | |
d3d50620 DA |
3604 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3605 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3606 | |
beb4e312 | 3607 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3608 | and its buffer current. */ |
dee091a3 | 3609 | { |
2bfa3d3e | 3610 | dynwind_begin (); |
dee091a3 JD |
3611 | Lisp_Object prev_window, prev_buffer; |
3612 | prev_window = selected_window; | |
3613 | XSETBUFFER (prev_buffer, old); | |
3614 | ||
3615 | /* Select the window that was chosen, for running the hook. | |
3616 | Note: Both Fselect_window and select_window_norecord may | |
3617 | set-buffer to the buffer displayed in the window, | |
3618 | so we need to save the current buffer. --stef */ | |
27e498e6 | 3619 | record_unwind_protect (restore_buffer, prev_buffer); |
dee091a3 JD |
3620 | record_unwind_protect (select_window_norecord, prev_window); |
3621 | Fselect_window (window, Qt); | |
e74aeda8 | 3622 | Fset_buffer (w->contents); |
dee091a3 | 3623 | Frun_hooks (1, &Qtemp_buffer_show_hook); |
2bfa3d3e | 3624 | dynwind_end (); |
dee091a3 | 3625 | } |
2cccc823 | 3626 | } |
7ab12479 JB |
3627 | } |
3628 | \f | |
1a13852e MR |
3629 | /* Make new window, have it replace WINDOW in window-tree, and make |
3630 | WINDOW its only vertical child (HORFLAG 1 means make WINDOW its only | |
3631 | horizontal child). */ | |
3632 | static void | |
748fa866 | 3633 | make_parent_window (Lisp_Object window, bool horflag) |
1a13852e MR |
3634 | { |
3635 | Lisp_Object parent; | |
3636 | register struct window *o, *p; | |
1a13852e MR |
3637 | |
3638 | o = XWINDOW (window); | |
3639 | p = allocate_window (); | |
aa754e6a | 3640 | memcpy ((char *) p + sizeof (struct vectorlike_header), |
62efea5e | 3641 | (char *) o + sizeof (struct vectorlike_header), |
663e2b3f | 3642 | word_size * VECSIZE (struct window)); |
e74aeda8 | 3643 | /* P's buffer slot may change from nil to a buffer... */ |
98a07056 | 3644 | adjust_window_count (p, 1); |
1a13852e MR |
3645 | XSETWINDOW (parent, p); |
3646 | ||
880e6158 MR |
3647 | p->sequence_number = ++sequence_number; |
3648 | ||
1a13852e MR |
3649 | replace_window (window, parent, 1); |
3650 | ||
e8c17b81 PE |
3651 | wset_next (o, Qnil); |
3652 | wset_prev (o, Qnil); | |
3653 | wset_parent (o, parent); | |
e74aeda8 | 3654 | /* ...but now P becomes an internal window. */ |
e8c17b81 PE |
3655 | wset_start (p, Qnil); |
3656 | wset_pointm (p, Qnil); | |
3657 | wset_buffer (p, Qnil); | |
e74aeda8 | 3658 | wset_combination (p, horflag, window); |
e8c17b81 PE |
3659 | wset_combination_limit (p, Qnil); |
3660 | wset_window_parameters (p, Qnil); | |
1a13852e MR |
3661 | } |
3662 | ||
496e208e MR |
3663 | /* Make new window from scratch. */ |
3664 | Lisp_Object | |
3665 | make_window (void) | |
3666 | { | |
3667 | Lisp_Object window; | |
3668 | register struct window *w; | |
3669 | ||
3670 | w = allocate_window (); | |
62efea5e DA |
3671 | /* Initialize Lisp data. Note that allocate_window initializes all |
3672 | Lisp data to nil, so do it only for slots which should not be nil. */ | |
e8c17b81 PE |
3673 | wset_normal_lines (w, make_float (1.0)); |
3674 | wset_normal_cols (w, make_float (1.0)); | |
3675 | wset_new_total (w, make_number (0)); | |
3676 | wset_new_normal (w, make_number (0)); | |
880e6158 | 3677 | wset_new_pixel (w, make_number (0)); |
e8c17b81 PE |
3678 | wset_start (w, Fmake_marker ()); |
3679 | wset_pointm (w, Fmake_marker ()); | |
3680 | wset_vertical_scroll_bar_type (w, Qt); | |
e99f70c8 SM |
3681 | /* These Lisp fields are marked specially so they're not set to nil by |
3682 | allocate_window. */ | |
3683 | wset_prev_buffers (w, Qnil); | |
3684 | wset_next_buffers (w, Qnil); | |
62efea5e DA |
3685 | |
3686 | /* Initialize non-Lisp data. Note that allocate_window zeroes out all | |
3687 | non-Lisp data, so do it only for slots which should not be zero. */ | |
496e208e | 3688 | w->nrows_scale_factor = w->ncols_scale_factor = 1; |
9e37ee3b | 3689 | w->left_fringe_width = w->right_fringe_width = -1; |
b9695828 | 3690 | w->mode_line_height = w->header_line_height = -1; |
29bf4de4 DA |
3691 | #ifdef HAVE_WINDOW_SYSTEM |
3692 | w->phys_cursor_type = NO_CURSOR; | |
496e208e | 3693 | w->phys_cursor_width = -1; |
29bf4de4 | 3694 | #endif |
880e6158 | 3695 | w->sequence_number = ++sequence_number; |
38a2c910 | 3696 | w->scroll_bar_width = -1; |
422ff52b | 3697 | w->column_number_displayed = -1; |
62efea5e | 3698 | |
496e208e MR |
3699 | /* Reset window_list. */ |
3700 | Vwindow_list = Qnil; | |
3701 | /* Return window. */ | |
3702 | XSETWINDOW (window, w); | |
3703 | return window; | |
3704 | } | |
3705 | \f | |
880e6158 MR |
3706 | DEFUN ("set-window-new-pixel", Fset_window_new_pixel, Sset_window_new_pixel, 2, 3, 0, |
3707 | doc: /* Set new pixel size of WINDOW to SIZE. | |
3708 | WINDOW must be a valid window and defaults to the selected one. | |
3709 | Return SIZE. | |
3710 | ||
3711 | Optional argument ADD non-nil means add SIZE to the new pixel size of | |
3712 | WINDOW and return the sum. | |
3713 | ||
3714 | Note: This function does not operate on any child windows of WINDOW. */) | |
3715 | (Lisp_Object window, Lisp_Object size, Lisp_Object add) | |
3716 | { | |
3717 | struct window *w = decode_valid_window (window); | |
2654ac09 PE |
3718 | EMACS_INT size_min = NILP (add) ? 0 : - XINT (w->new_pixel); |
3719 | EMACS_INT size_max = size_min + min (INT_MAX, MOST_POSITIVE_FIXNUM); | |
880e6158 | 3720 | |
7303a0ae | 3721 | CHECK_RANGED_INTEGER (size, size_min, size_max); |
880e6158 MR |
3722 | if (NILP (add)) |
3723 | wset_new_pixel (w, size); | |
3724 | else | |
3725 | wset_new_pixel (w, make_number (XINT (w->new_pixel) + XINT (size))); | |
3726 | ||
3727 | return w->new_pixel; | |
3728 | } | |
3729 | ||
496e208e MR |
3730 | DEFUN ("set-window-new-total", Fset_window_new_total, Sset_window_new_total, 2, 3, 0, |
3731 | doc: /* Set new total size of WINDOW to SIZE. | |
52162052 | 3732 | WINDOW must be a valid window and defaults to the selected one. |
496e208e MR |
3733 | Return SIZE. |
3734 | ||
3735 | Optional argument ADD non-nil means add SIZE to the new total size of | |
3736 | WINDOW and return the sum. | |
3737 | ||
be7f5545 | 3738 | Note: This function does not operate on any child windows of WINDOW. */) |
496e208e MR |
3739 | (Lisp_Object window, Lisp_Object size, Lisp_Object add) |
3740 | { | |
52162052 | 3741 | struct window *w = decode_valid_window (window); |
496e208e MR |
3742 | |
3743 | CHECK_NUMBER (size); | |
3744 | if (NILP (add)) | |
e8c17b81 | 3745 | wset_new_total (w, size); |
496e208e | 3746 | else |
e8c17b81 | 3747 | wset_new_total (w, make_number (XINT (w->new_total) + XINT (size))); |
496e208e | 3748 | |
d3d50620 | 3749 | return w->new_total; |
496e208e MR |
3750 | } |
3751 | ||
3752 | DEFUN ("set-window-new-normal", Fset_window_new_normal, Sset_window_new_normal, 1, 2, 0, | |
3753 | doc: /* Set new normal size of WINDOW to SIZE. | |
52162052 | 3754 | WINDOW must be a valid window and defaults to the selected one. |
496e208e MR |
3755 | Return SIZE. |
3756 | ||
be7f5545 | 3757 | Note: This function does not operate on any child windows of WINDOW. */) |
496e208e MR |
3758 | (Lisp_Object window, Lisp_Object size) |
3759 | { | |
e8c17b81 PE |
3760 | wset_new_normal (decode_valid_window (window), size); |
3761 | return size; | |
7ab12479 JB |
3762 | } |
3763 | ||
880e6158 MR |
3764 | /* Return 1 if setting w->pixel_height (w->pixel_width if HORFLAG is |
3765 | non-zero) to w->new_pixel would result in correct heights (widths) | |
be7f5545 | 3766 | for window W and recursively all child windows of W. |
1a13852e MR |
3767 | |
3768 | Note: This function does not check any of `window-fixed-size-p', | |
3769 | `window-min-height' or `window-min-width'. It does check that window | |
3770 | sizes do not drop below one line (two columns). */ | |
4b66faf3 | 3771 | static int |
748fa866 | 3772 | window_resize_check (struct window *w, bool horflag) |
1a13852e | 3773 | { |
880e6158 | 3774 | struct frame *f = XFRAME (w->frame); |
1a13852e MR |
3775 | struct window *c; |
3776 | ||
e74aeda8 | 3777 | if (WINDOW_VERTICAL_COMBINATION_P (w)) |
1a13852e MR |
3778 | /* W is a vertical combination. */ |
3779 | { | |
e74aeda8 | 3780 | c = XWINDOW (w->contents); |
1a13852e | 3781 | if (horflag) |
be7f5545 | 3782 | /* All child windows of W must have the same width as W. */ |
1a13852e MR |
3783 | { |
3784 | while (c) | |
3785 | { | |
880e6158 | 3786 | if (XINT (c->new_pixel) != XINT (w->new_pixel) |
d615d6d2 | 3787 | || !window_resize_check (c, horflag)) |
1a13852e | 3788 | return 0; |
880e6158 | 3789 | |
d3d50620 | 3790 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e | 3791 | } |
880e6158 | 3792 | |
1a13852e MR |
3793 | return 1; |
3794 | } | |
3795 | else | |
be7f5545 MR |
3796 | /* The sum of the heights of the child windows of W must equal |
3797 | W's height. */ | |
1a13852e | 3798 | { |
2654ac09 | 3799 | int remaining_pixels = XINT (w->new_pixel); |
880e6158 | 3800 | |
1a13852e MR |
3801 | while (c) |
3802 | { | |
d615d6d2 | 3803 | if (!window_resize_check (c, horflag)) |
1a13852e | 3804 | return 0; |
880e6158 | 3805 | |
2654ac09 PE |
3806 | remaining_pixels -= XINT (c->new_pixel); |
3807 | if (remaining_pixels < 0) | |
3808 | return 0; | |
d3d50620 | 3809 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e | 3810 | } |
880e6158 | 3811 | |
2654ac09 | 3812 | return remaining_pixels == 0; |
1a13852e MR |
3813 | } |
3814 | } | |
e74aeda8 | 3815 | else if (WINDOW_HORIZONTAL_COMBINATION_P (w)) |
1a13852e MR |
3816 | /* W is a horizontal combination. */ |
3817 | { | |
e74aeda8 | 3818 | c = XWINDOW (w->contents); |
1a13852e | 3819 | if (horflag) |
be7f5545 | 3820 | /* The sum of the widths of the child windows of W must equal W's |
1a13852e MR |
3821 | width. */ |
3822 | { | |
2654ac09 | 3823 | int remaining_pixels = XINT (w->new_pixel); |
880e6158 | 3824 | |
1a13852e MR |
3825 | while (c) |
3826 | { | |
d615d6d2 | 3827 | if (!window_resize_check (c, horflag)) |
1a13852e | 3828 | return 0; |
880e6158 | 3829 | |
2654ac09 PE |
3830 | remaining_pixels -= XINT (c->new_pixel); |
3831 | if (remaining_pixels < 0) | |
3832 | return 0; | |
d3d50620 | 3833 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e | 3834 | } |
880e6158 | 3835 | |
2654ac09 | 3836 | return remaining_pixels == 0; |
1a13852e MR |
3837 | } |
3838 | else | |
be7f5545 | 3839 | /* All child windows of W must have the same height as W. */ |
1a13852e MR |
3840 | { |
3841 | while (c) | |
3842 | { | |
880e6158 | 3843 | if (XINT (c->new_pixel) != XINT (w->new_pixel) |
d615d6d2 | 3844 | || !window_resize_check (c, horflag)) |
1a13852e | 3845 | return 0; |
880e6158 | 3846 | |
d3d50620 | 3847 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e | 3848 | } |
880e6158 | 3849 | |
1a13852e MR |
3850 | return 1; |
3851 | } | |
3852 | } | |
3853 | else | |
3854 | /* A leaf window. Make sure it's not too small. The following | |
3855 | hardcodes the values of `window-safe-min-width' (2) and | |
3856 | `window-safe-min-height' (1) which are defined in window.el. */ | |
880e6158 MR |
3857 | return (XINT (w->new_pixel) >= (horflag |
3858 | ? (2 * FRAME_COLUMN_WIDTH (f)) | |
3859 | : FRAME_LINE_HEIGHT (f))); | |
1a13852e MR |
3860 | } |
3861 | ||
880e6158 MR |
3862 | |
3863 | /* Set w->pixel_height (w->pixel_height if HORIZONTAL is non-zero) to | |
3864 | w->new_pixel for window W and recursively all child windows of W. | |
3865 | Also calculate and assign the new vertical (horizontal) pixel start | |
be7f5545 | 3866 | positions of each of these windows. |
1a13852e MR |
3867 | |
3868 | This function does not perform any error checks. Make sure you have | |
d615d6d2 | 3869 | run window_resize_check on W before applying this function. */ |
440a42e3 | 3870 | static void |
748fa866 | 3871 | window_resize_apply (struct window *w, bool horflag) |
1a13852e | 3872 | { |
46a4ce9e | 3873 | struct window *c; |
880e6158 MR |
3874 | int edge; |
3875 | int unit = (horflag | |
3876 | ? FRAME_COLUMN_WIDTH (WINDOW_XFRAME (w)) | |
3877 | : FRAME_LINE_HEIGHT (WINDOW_XFRAME (w))); | |
1a13852e MR |
3878 | |
3879 | /* Note: Assigning new_normal requires that the new total size of the | |
3880 | parent window has been set *before*. */ | |
3881 | if (horflag) | |
3882 | { | |
880e6158 MR |
3883 | w->pixel_width = XFASTINT (w->new_pixel); |
3884 | w->total_cols = w->pixel_width / unit; | |
d3d50620 | 3885 | if (NUMBERP (w->new_normal)) |
e8c17b81 | 3886 | wset_normal_cols (w, w->new_normal); |
1a13852e | 3887 | |
880e6158 | 3888 | edge = w->pixel_left; |
1a13852e MR |
3889 | } |
3890 | else | |
3891 | { | |
880e6158 MR |
3892 | w->pixel_height = XFASTINT (w->new_pixel); |
3893 | w->total_lines = w->pixel_height / unit; | |
d3d50620 | 3894 | if (NUMBERP (w->new_normal)) |
e8c17b81 | 3895 | wset_normal_lines (w, w->new_normal); |
1a13852e | 3896 | |
880e6158 | 3897 | edge = w->pixel_top; |
1a13852e MR |
3898 | } |
3899 | ||
e74aeda8 | 3900 | if (WINDOW_VERTICAL_COMBINATION_P (w)) |
1a13852e MR |
3901 | /* W is a vertical combination. */ |
3902 | { | |
e74aeda8 | 3903 | c = XWINDOW (w->contents); |
1a13852e MR |
3904 | while (c) |
3905 | { | |
3906 | if (horflag) | |
880e6158 MR |
3907 | { |
3908 | c->pixel_left = edge; | |
3909 | c->left_col = edge / unit; | |
3910 | } | |
1a13852e | 3911 | else |
880e6158 MR |
3912 | { |
3913 | c->pixel_top = edge; | |
3914 | c->top_line = edge / unit; | |
3915 | } | |
d615d6d2 | 3916 | window_resize_apply (c, horflag); |
1a13852e | 3917 | if (!horflag) |
880e6158 MR |
3918 | edge = edge + c->pixel_height; |
3919 | ||
d3d50620 | 3920 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3921 | } |
3922 | } | |
e74aeda8 | 3923 | else if (WINDOW_HORIZONTAL_COMBINATION_P (w)) |
1a13852e MR |
3924 | /* W is a horizontal combination. */ |
3925 | { | |
e74aeda8 | 3926 | c = XWINDOW (w->contents); |
1a13852e MR |
3927 | while (c) |
3928 | { | |
3929 | if (horflag) | |
880e6158 MR |
3930 | { |
3931 | c->pixel_left = edge; | |
3932 | c->left_col = edge / unit; | |
3933 | } | |
1a13852e | 3934 | else |
880e6158 MR |
3935 | { |
3936 | c->pixel_top = edge; | |
3937 | c->top_line = edge / unit; | |
3938 | } | |
3939 | ||
d615d6d2 | 3940 | window_resize_apply (c, horflag); |
1a13852e | 3941 | if (horflag) |
880e6158 MR |
3942 | edge = edge + c->pixel_width; |
3943 | ||
d3d50620 | 3944 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3945 | } |
3946 | } | |
72fdd473 | 3947 | else |
9be95071 MR |
3948 | { |
3949 | adjust_window_margins (w); | |
3950 | /* Bug#15957. */ | |
3951 | w->window_end_valid = 0; | |
3952 | } | |
1a13852e MR |
3953 | } |
3954 | ||
3955 | ||
880e6158 MR |
3956 | /* Set w->total_lines (w->total_cols if HORIZONTAL is non-zero) to |
3957 | w->new_total for window W and recursively all child windows of W. | |
3958 | Also calculate and assign the new vertical (horizontal) start | |
3959 | positions of each of these windows. */ | |
3960 | static void | |
3961 | window_resize_apply_total (struct window *w, bool horflag) | |
3962 | { | |
3963 | struct window *c; | |
3964 | int edge; | |
3965 | ||
3966 | /* Note: Assigning new_normal requires that the new total size of the | |
3967 | parent window has been set *before*. */ | |
3968 | if (horflag) | |
3969 | { | |
3970 | w->total_cols = XFASTINT (w->new_total); | |
3971 | edge = w->left_col; | |
3972 | } | |
3973 | else | |
3974 | { | |
3975 | w->total_lines = XFASTINT (w->new_total); | |
3976 | edge = w->top_line; | |
3977 | } | |
3978 | ||
3979 | if (WINDOW_VERTICAL_COMBINATION_P (w)) | |
3980 | /* W is a vertical combination. */ | |
3981 | { | |
3982 | c = XWINDOW (w->contents); | |
3983 | while (c) | |
3984 | { | |
3985 | if (horflag) | |
3986 | c->left_col = edge; | |
3987 | else | |
3988 | c->top_line = edge; | |
3989 | ||
3990 | window_resize_apply_total (c, horflag); | |
3991 | if (!horflag) | |
3992 | edge = edge + c->total_lines; | |
3993 | ||
3994 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
3995 | } | |
3996 | } | |
3997 | else if (WINDOW_HORIZONTAL_COMBINATION_P (w)) | |
3998 | /* W is a horizontal combination. */ | |
3999 | { | |
4000 | c = XWINDOW (w->contents); | |
4001 | while (c) | |
4002 | { | |
4003 | if (horflag) | |
4004 | c->left_col = edge; | |
4005 | else | |
4006 | c->top_line = edge; | |
4007 | ||
4008 | window_resize_apply_total (c, horflag); | |
4009 | if (horflag) | |
4010 | edge = edge + c->total_cols; | |
4011 | ||
4012 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
4013 | } | |
4014 | } | |
4015 | } | |
4016 | ||
d9f07150 | 4017 | DEFUN ("window-resize-apply", Fwindow_resize_apply, Swindow_resize_apply, 0, 2, 0, |
1a13852e | 4018 | doc: /* Apply requested size values for window-tree of FRAME. |
d9f07150 DA |
4019 | If FRAME is omitted or nil, it defaults to the selected frame. |
4020 | ||
4021 | Optional argument HORIZONTAL omitted or nil means apply requested | |
4022 | height values. HORIZONTAL non-nil means apply requested width values. | |
1a13852e MR |
4023 | |
4024 | This function checks whether the requested values sum up to a valid | |
be7f5545 MR |
4025 | window layout, recursively assigns the new sizes of all child windows |
4026 | and calculates and assigns the new start positions of these windows. | |
1a13852e MR |
4027 | |
4028 | Note: This function does not check any of `window-fixed-size-p', | |
4029 | `window-min-height' or `window-min-width'. All these checks have to | |
4030 | be applied on the Elisp level. */) | |
4031 | (Lisp_Object frame, Lisp_Object horizontal) | |
4032 | { | |
d9f07150 DA |
4033 | struct frame *f = decode_live_frame (frame); |
4034 | struct window *r = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
748fa866 | 4035 | bool horflag = !NILP (horizontal); |
1a13852e | 4036 | |
d615d6d2 | 4037 | if (!window_resize_check (r, horflag) |
880e6158 MR |
4038 | || (XINT (r->new_pixel) |
4039 | != (horflag ? r->pixel_width : r->pixel_height))) | |
1a13852e MR |
4040 | return Qnil; |
4041 | ||
4d7e6e51 | 4042 | block_input (); |
d615d6d2 | 4043 | window_resize_apply (r, horflag); |
1a13852e | 4044 | |
5961ad6c | 4045 | fset_redisplay (f); |
1a13852e MR |
4046 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
4047 | ||
bd0443bb | 4048 | adjust_frame_glyphs (f); |
4d7e6e51 | 4049 | unblock_input (); |
1a13852e | 4050 | |
880e6158 MR |
4051 | return Qt; |
4052 | } | |
4053 | ||
4054 | ||
4055 | DEFUN ("window-resize-apply-total", Fwindow_resize_apply_total, Swindow_resize_apply_total, 0, 2, 0, | |
4056 | doc: /* Apply requested total size values for window-tree of FRAME. | |
4057 | If FRAME is omitted or nil, it defaults to the selected frame. | |
4058 | ||
4059 | This function does not assign pixel or normal size values. You should | |
4060 | have run `window-resize-apply' before running this. | |
4061 | ||
4062 | Optional argument HORIZONTAL omitted or nil means apply requested | |
4063 | height values. HORIZONTAL non-nil means apply requested width | |
4064 | values. */) | |
4065 | (Lisp_Object frame, Lisp_Object horizontal) | |
4066 | { | |
4067 | struct frame *f = decode_live_frame (frame); | |
4068 | struct window *r = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4069 | ||
4070 | block_input (); | |
4071 | /* Necessary when deleting the top-/or leftmost window. */ | |
4072 | r->left_col = 0; | |
4073 | r->top_line = FRAME_TOP_MARGIN (f); | |
4074 | window_resize_apply_total (r, !NILP (horizontal)); | |
c44de18d MR |
4075 | /* Handle the mini window. */ |
4076 | if (FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
4077 | { | |
4078 | struct window *m = XWINDOW (f->minibuffer_window); | |
4079 | ||
4080 | if (NILP (horizontal)) | |
4081 | { | |
4082 | m->top_line = r->top_line + r->total_lines; | |
4083 | m->total_lines = XFASTINT (m->new_total); | |
4084 | } | |
4085 | else | |
4086 | m->total_cols = XFASTINT (m->new_total); | |
4087 | } | |
4088 | ||
880e6158 | 4089 | unblock_input (); |
1a13852e MR |
4090 | |
4091 | return Qt; | |
4092 | } | |
4093 | ||
4094 | ||
4095 | /* Resize frame F's windows when number of lines of F is set to SIZE. | |
4096 | HORFLAG 1 means resize windows when number of columns of F is set to | |
880e6158 | 4097 | SIZE. PIXELWISE 1 means to interpret SIZE as pixels. |
1a13852e MR |
4098 | |
4099 | This function can delete all windows but the selected one in order to | |
4100 | satisfy the request. The result will be meaningful if and only if | |
4101 | F's windows have meaningful sizes when you call this. */ | |
4102 | void | |
880e6158 | 4103 | resize_frame_windows (struct frame *f, int size, bool horflag, bool pixelwise) |
1a13852e | 4104 | { |
e69b0960 | 4105 | Lisp_Object root = f->root_window; |
1a13852e | 4106 | struct window *r = XWINDOW (root); |
e69b0960 | 4107 | Lisp_Object mini = f->minibuffer_window; |
1a13852e | 4108 | struct window *m; |
880e6158 MR |
4109 | /* old_size is the old size of the frame's root window. */ |
4110 | int old_size = horflag ? r->total_cols : r->total_lines; | |
4111 | int old_pixel_size = horflag ? r->pixel_width : r->pixel_height; | |
1a13852e | 4112 | /* new_size is the new size of the frame's root window. */ |
880e6158 | 4113 | int new_size, new_pixel_size; |
0cbab19e | 4114 | int unit = horflag ? FRAME_COLUMN_WIDTH (f) : FRAME_LINE_HEIGHT (f); |
880e6158 | 4115 | |
0cbab19e MR |
4116 | /* Don't let the size drop below one unit. This is more comforting |
4117 | when we are called from x_set_tool_bar_lines since the latter may | |
4118 | have implicitly given us a zero or negative height. */ | |
880e6158 MR |
4119 | if (pixelwise) |
4120 | { | |
7d7ccb88 MR |
4121 | /* Note: This does not include the size for internal borders |
4122 | since these are not part of the frame's text area. */ | |
0cbab19e MR |
4123 | new_pixel_size = max (horflag |
4124 | ? size | |
4125 | : (size | |
4126 | - FRAME_TOP_MARGIN_HEIGHT (f) | |
4127 | - ((FRAME_HAS_MINIBUF_P (f) | |
4128 | && !FRAME_MINIBUF_ONLY_P (f)) | |
4129 | ? FRAME_LINE_HEIGHT (f) : 0)), | |
4130 | unit); | |
4131 | new_size = new_pixel_size / unit; | |
880e6158 | 4132 | } |
6ae87264 | 4133 | else |
880e6158 | 4134 | { |
0cbab19e MR |
4135 | new_size = max (horflag |
4136 | ? size | |
4137 | : (size | |
4138 | - FRAME_TOP_MARGIN (f) | |
4139 | - ((FRAME_HAS_MINIBUF_P (f) | |
4140 | && !FRAME_MINIBUF_ONLY_P (f)) | |
4141 | ? 1 : 0)), | |
4142 | 1); | |
4143 | new_pixel_size = new_size * unit; | |
880e6158 | 4144 | } |
1a13852e | 4145 | |
5f24fa51 | 4146 | r->top_line = FRAME_TOP_MARGIN (f); |
880e6158 MR |
4147 | r->pixel_top = FRAME_TOP_MARGIN_HEIGHT (f); |
4148 | ||
4149 | if (new_pixel_size == old_pixel_size) | |
d94c40c1 | 4150 | ; |
880e6158 | 4151 | else if (WINDOW_LEAF_P (r)) |
1a13852e MR |
4152 | /* For a leaf root window just set the size. */ |
4153 | if (horflag) | |
880e6158 MR |
4154 | { |
4155 | r->total_cols = new_size; | |
4156 | r->pixel_width = new_pixel_size; | |
4157 | } | |
1a13852e | 4158 | else |
880e6158 MR |
4159 | { |
4160 | r->total_lines = new_size; | |
4161 | r->pixel_height = new_pixel_size; | |
4162 | } | |
1a13852e MR |
4163 | else |
4164 | { | |
1a13852e MR |
4165 | Lisp_Object delta; |
4166 | ||
880e6158 MR |
4167 | if (pixelwise) |
4168 | XSETINT (delta, new_pixel_size - old_pixel_size); | |
4169 | else | |
4170 | XSETINT (delta, new_size - old_size); | |
4171 | ||
1a13852e | 4172 | /* Try a "normal" resize first. */ |
880e6158 MR |
4173 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qnil, |
4174 | pixelwise ? Qt : Qnil); | |
3a45383a | 4175 | if (window_resize_check (r, horflag) |
880e6158 MR |
4176 | && new_pixel_size == XINT (r->new_pixel)) |
4177 | { | |
4178 | window_resize_apply (r, horflag); | |
4179 | window_pixel_to_total (r->frame, horflag ? Qt : Qnil); | |
4180 | } | |
1a13852e MR |
4181 | else |
4182 | { | |
4183 | /* Try with "reasonable" minimum sizes next. */ | |
880e6158 MR |
4184 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qt, |
4185 | pixelwise ? Qt : Qnil); | |
d615d6d2 | 4186 | if (window_resize_check (r, horflag) |
880e6158 MR |
4187 | && new_pixel_size == XINT (r->new_pixel)) |
4188 | { | |
4189 | window_resize_apply (r, horflag); | |
4190 | window_pixel_to_total (r->frame, horflag ? Qt : Qnil); | |
4191 | } | |
1a13852e MR |
4192 | else |
4193 | { | |
4194 | /* Finally, try with "safe" minimum sizes. */ | |
880e6158 MR |
4195 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qsafe, |
4196 | pixelwise ? Qt : Qnil); | |
d615d6d2 | 4197 | if (window_resize_check (r, horflag) |
880e6158 MR |
4198 | && new_pixel_size == XINT (r->new_pixel)) |
4199 | { | |
4200 | window_resize_apply (r, horflag); | |
4201 | window_pixel_to_total (r->frame, horflag ? Qt : Qnil); | |
4202 | } | |
0cbab19e | 4203 | #if 0 /* Let's try without killing other windows. */ |
1a13852e MR |
4204 | else |
4205 | { | |
4206 | /* We lost. Delete all windows but the frame's | |
4207 | selected one. */ | |
e69b0960 | 4208 | root = f->selected_window; |
1a13852e MR |
4209 | Fdelete_other_windows_internal (root, Qnil); |
4210 | if (horflag) | |
880e6158 MR |
4211 | { |
4212 | XWINDOW (root)->total_cols = new_size; | |
4213 | XWINDOW (root)->pixel_width = new_pixel_size; | |
4214 | } | |
1a13852e | 4215 | else |
880e6158 MR |
4216 | { |
4217 | XWINDOW (root)->total_lines = new_size; | |
4218 | XWINDOW (root)->pixel_height = new_pixel_size; | |
4219 | } | |
1a13852e | 4220 | } |
0cbab19e | 4221 | #endif /* 0 */ |
1a13852e MR |
4222 | } |
4223 | } | |
4224 | } | |
4225 | ||
4226 | if (FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
4227 | { | |
4228 | m = XWINDOW (mini); | |
4229 | if (horflag) | |
880e6158 MR |
4230 | { |
4231 | m->total_cols = size; | |
4232 | m->pixel_width = new_pixel_size; | |
4233 | } | |
1a13852e MR |
4234 | else |
4235 | { | |
4236 | /* Are we sure we always want 1 line here? */ | |
5f24fa51 | 4237 | m->total_lines = 1; |
880e6158 | 4238 | m->pixel_height = FRAME_LINE_HEIGHT (f); |
5f24fa51 | 4239 | m->top_line = r->top_line + r->total_lines; |
880e6158 | 4240 | m->pixel_top = r->pixel_top + r->pixel_height; |
1a13852e MR |
4241 | } |
4242 | } | |
dca778d5 | 4243 | |
5961ad6c | 4244 | fset_redisplay (f); |
1a13852e MR |
4245 | } |
4246 | ||
4247 | ||
4248 | DEFUN ("split-window-internal", Fsplit_window_internal, Ssplit_window_internal, 4, 4, 0, | |
4249 | doc: /* Split window OLD. | |
880e6158 | 4250 | Second argument PIXEL-SIZE specifies the number of pixels of the |
9397e56f | 4251 | new window. In any case TOTAL-SIZE must be a positive integer. |
1a13852e MR |
4252 | |
4253 | Third argument SIDE nil (or `below') specifies that the new window shall | |
4254 | be located below WINDOW. SIDE `above' means the new window shall be | |
880e6158 MR |
4255 | located above WINDOW. In both cases PIXEL-SIZE specifies the pixel |
4256 | height of the new window including space reserved for the mode and/or | |
1a13852e MR |
4257 | header line. |
4258 | ||
4259 | SIDE t (or `right') specifies that the new window shall be located on | |
4260 | the right side of WINDOW. SIDE `left' means the new window shall be | |
880e6158 MR |
4261 | located on the left of WINDOW. In both cases PIXEL-SIZE specifies the |
4262 | width of the new window including space reserved for fringes and the | |
4263 | scrollbar or a divider column. | |
1a13852e MR |
4264 | |
4265 | Fourth argument NORMAL-SIZE specifies the normal size of the new window | |
4266 | according to the SIDE argument. | |
4267 | ||
880e6158 | 4268 | The new pixel and normal sizes of all involved windows must have been |
1a13852e | 4269 | set correctly. See the code of `split-window' for how this is done. */) |
880e6158 | 4270 | (Lisp_Object old, Lisp_Object pixel_size, Lisp_Object side, Lisp_Object normal_size) |
1a13852e MR |
4271 | { |
4272 | /* OLD (*o) is the window we have to split. (*p) is either OLD's | |
4273 | parent window or an internal window we have to install as OLD's new | |
4274 | parent. REFERENCE (*r) must denote a live window, or is set to OLD | |
4275 | provided OLD is a leaf window, or to the frame's selected window. | |
4276 | NEW (*n) is the new window created with some parameters taken from | |
4277 | REFERENCE (*r). */ | |
4278 | register Lisp_Object new, frame, reference; | |
880e6158 | 4279 | register struct window *o, *p, *n, *r, *c; |
1a13852e | 4280 | struct frame *f; |
748fa866 | 4281 | bool horflag |
1a13852e MR |
4282 | /* HORFLAG is 1 when we split side-by-side, 0 otherwise. */ |
4283 | = EQ (side, Qt) || EQ (side, Qleft) || EQ (side, Qright); | |
880e6158 MR |
4284 | int combination_limit = 0, sum = 0; |
4285 | int total_size; | |
1a13852e MR |
4286 | |
4287 | CHECK_WINDOW (old); | |
4288 | o = XWINDOW (old); | |
4289 | frame = WINDOW_FRAME (o); | |
4290 | f = XFRAME (frame); | |
4291 | ||
880e6158 MR |
4292 | CHECK_NUMBER (pixel_size); |
4293 | total_size | |
4294 | = XINT (pixel_size) / (horflag | |
4295 | ? FRAME_COLUMN_WIDTH (f) | |
4296 | : FRAME_LINE_HEIGHT (f)); | |
1a13852e | 4297 | |
b6f67890 MR |
4298 | /* Set combination_limit to 1 if we have to make a new parent window. |
4299 | We do that if either `window-combination-limit' is t, or OLD has no | |
4300 | parent, or OLD is ortho-combined. */ | |
4301 | combination_limit = | |
8e17c9ba | 4302 | EQ (Vwindow_combination_limit, Qt) |
d3d50620 | 4303 | || NILP (o->parent) |
e74aeda8 DA |
4304 | || (horflag |
4305 | ? WINDOW_VERTICAL_COMBINATION_P (XWINDOW (o->parent)) | |
4306 | : WINDOW_HORIZONTAL_COMBINATION_P (XWINDOW (o->parent))); | |
1a13852e MR |
4307 | |
4308 | /* We need a live reference window to initialize some parameters. */ | |
4309 | if (WINDOW_LIVE_P (old)) | |
4310 | /* OLD is live, use it as reference window. */ | |
4311 | reference = old; | |
4312 | else | |
4313 | /* Use the frame's selected window as reference window. */ | |
4314 | reference = FRAME_SELECTED_WINDOW (f); | |
4315 | r = XWINDOW (reference); | |
4316 | ||
4317 | /* The following bugs are caught by `split-window'. */ | |
4318 | if (MINI_WINDOW_P (o)) | |
4319 | error ("Attempt to split minibuffer window"); | |
880e6158 | 4320 | else if (total_size < (horflag ? 2 : 1)) |
1a13852e | 4321 | error ("Size of new window too small (after split)"); |
a0c2d0ae MR |
4322 | else if (!combination_limit && !NILP (Vwindow_combination_resize)) |
4323 | /* `window-combination-resize' non-nil means try to resize OLD's siblings | |
1a13852e MR |
4324 | proportionally. */ |
4325 | { | |
d3d50620 | 4326 | p = XWINDOW (o->parent); |
1a13852e | 4327 | /* Temporarily pretend we split the parent window. */ |
880e6158 MR |
4328 | wset_new_pixel |
4329 | (p, make_number ((horflag ? p->pixel_width : p->pixel_height) | |
4330 | - XINT (pixel_size))); | |
d615d6d2 | 4331 | if (!window_resize_check (p, horflag)) |
1a13852e MR |
4332 | error ("Window sizes don't fit"); |
4333 | else | |
4334 | /* Undo the temporary pretension. */ | |
880e6158 | 4335 | wset_new_pixel (p, make_number (horflag ? p->pixel_width : p->pixel_height)); |
1a13852e MR |
4336 | } |
4337 | else | |
4338 | { | |
d615d6d2 | 4339 | if (!window_resize_check (o, horflag)) |
1a13852e | 4340 | error ("Resizing old window failed"); |
880e6158 MR |
4341 | else if (XINT (pixel_size) + XINT (o->new_pixel) |
4342 | != (horflag ? o->pixel_width : o->pixel_height)) | |
1a13852e MR |
4343 | error ("Sum of sizes of old and new window don't fit"); |
4344 | } | |
4345 | ||
5961ad6c | 4346 | /* This is our point of no return. */ |
b6f67890 | 4347 | if (combination_limit) |
1a13852e MR |
4348 | { |
4349 | /* Save the old value of o->normal_cols/lines. It gets corrupted | |
4350 | by make_parent_window and we need it below for assigning it to | |
4351 | p->new_normal. */ | |
3a45383a | 4352 | Lisp_Object new_normal |
d3d50620 | 4353 | = horflag ? o->normal_cols : o->normal_lines; |
1a13852e MR |
4354 | |
4355 | make_parent_window (old, horflag); | |
d3d50620 | 4356 | p = XWINDOW (o->parent); |
fdaf534a MR |
4357 | if (EQ (Vwindow_combination_limit, Qt)) |
4358 | /* Store t in the new parent's combination_limit slot to avoid | |
4359 | that its children get merged into another window. */ | |
4360 | wset_combination_limit (p, Qt); | |
1a13852e | 4361 | /* These get applied below. */ |
880e6158 MR |
4362 | wset_new_pixel |
4363 | (p, make_number (horflag ? o->pixel_width : o->pixel_height)); | |
4364 | wset_new_total | |
4365 | (p, make_number (horflag ? o->total_cols : o->total_lines)); | |
e8c17b81 | 4366 | wset_new_normal (p, new_normal); |
1a13852e MR |
4367 | } |
4368 | else | |
d3d50620 | 4369 | p = XWINDOW (o->parent); |
1a13852e | 4370 | |
5961ad6c | 4371 | fset_redisplay (f); |
1a13852e MR |
4372 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
4373 | new = make_window (); | |
4374 | n = XWINDOW (new); | |
e8c17b81 PE |
4375 | wset_frame (n, frame); |
4376 | wset_parent (n, o->parent); | |
1a13852e MR |
4377 | |
4378 | if (EQ (side, Qabove) || EQ (side, Qleft)) | |
4379 | { | |
e8c17b81 | 4380 | wset_prev (n, o->prev); |
d3d50620 | 4381 | if (NILP (n->prev)) |
e74aeda8 | 4382 | wset_combination (p, horflag, new); |
1a13852e | 4383 | else |
e8c17b81 PE |
4384 | wset_next (XWINDOW (n->prev), new); |
4385 | wset_next (n, old); | |
4386 | wset_prev (o, new); | |
1a13852e MR |
4387 | } |
4388 | else | |
4389 | { | |
e8c17b81 | 4390 | wset_next (n, o->next); |
d3d50620 | 4391 | if (!NILP (n->next)) |
e8c17b81 PE |
4392 | wset_prev (XWINDOW (n->next), new); |
4393 | wset_prev (n, old); | |
4394 | wset_next (o, new); | |
1a13852e MR |
4395 | } |
4396 | ||
9d93ce29 | 4397 | n->window_end_valid = 0; |
c80016b3 | 4398 | n->last_cursor_vpos = 0; |
1a13852e MR |
4399 | |
4400 | /* Get special geometry settings from reference window. */ | |
eeaf9bf3 DA |
4401 | n->left_margin_cols = r->left_margin_cols; |
4402 | n->right_margin_cols = r->right_margin_cols; | |
9e37ee3b DA |
4403 | n->left_fringe_width = r->left_fringe_width; |
4404 | n->right_fringe_width = r->right_fringe_width; | |
1a13852e | 4405 | n->fringes_outside_margins = r->fringes_outside_margins; |
38a2c910 | 4406 | n->scroll_bar_width = r->scroll_bar_width; |
e8c17b81 | 4407 | wset_vertical_scroll_bar_type (n, r->vertical_scroll_bar_type); |
1a13852e | 4408 | |
1a13852e MR |
4409 | /* Directly assign orthogonal coordinates and sizes. */ |
4410 | if (horflag) | |
4411 | { | |
880e6158 | 4412 | n->pixel_top = o->pixel_top; |
5f24fa51 | 4413 | n->top_line = o->top_line; |
880e6158 | 4414 | n->pixel_height = o->pixel_height; |
5f24fa51 | 4415 | n->total_lines = o->total_lines; |
1a13852e MR |
4416 | } |
4417 | else | |
4418 | { | |
880e6158 | 4419 | n->pixel_left = o->pixel_left; |
5f24fa51 | 4420 | n->left_col = o->left_col; |
880e6158 | 4421 | n->pixel_width = o->pixel_width; |
5f24fa51 | 4422 | n->total_cols = o->total_cols; |
1a13852e MR |
4423 | } |
4424 | ||
d615d6d2 | 4425 | /* Iso-coordinates and sizes are assigned by window_resize_apply, |
1a13852e | 4426 | get them ready here. */ |
880e6158 MR |
4427 | wset_new_pixel (n, pixel_size); |
4428 | c = XWINDOW (p->contents); | |
4429 | while (c) | |
4430 | { | |
4431 | if (c != n) | |
4432 | sum = sum + XINT (c->new_total); | |
4433 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
4434 | } | |
4435 | wset_new_total (n, make_number ((horflag | |
4436 | ? p->total_cols | |
4437 | : p->total_lines) | |
4438 | - sum)); | |
e8c17b81 | 4439 | wset_new_normal (n, normal_size); |
1a13852e | 4440 | |
4d7e6e51 | 4441 | block_input (); |
d615d6d2 | 4442 | window_resize_apply (p, horflag); |
bd0443bb | 4443 | adjust_frame_glyphs (f); |
1a13852e MR |
4444 | /* Set buffer of NEW to buffer of reference window. Don't run |
4445 | any hooks. */ | |
e74aeda8 | 4446 | set_window_buffer (new, r->contents, 0, 1); |
4d7e6e51 | 4447 | unblock_input (); |
1a13852e MR |
4448 | |
4449 | /* Maybe we should run the scroll functions in Elisp (which already | |
4450 | runs the configuration change hook). */ | |
4451 | if (! NILP (Vwindow_scroll_functions)) | |
4452 | run_hook_with_args_2 (Qwindow_scroll_functions, new, | |
d3d50620 | 4453 | Fmarker_position (n->start)); |
1a13852e MR |
4454 | /* Return NEW. */ |
4455 | return new; | |
4456 | } | |
4457 | ||
4458 | ||
4459 | DEFUN ("delete-window-internal", Fdelete_window_internal, Sdelete_window_internal, 1, 1, 0, | |
4460 | doc: /* Remove WINDOW from its frame. | |
87e68db4 JB |
4461 | WINDOW defaults to the selected window. Return nil. |
4462 | Signal an error when WINDOW is the only window on its frame. */) | |
1a13852e MR |
4463 | (register Lisp_Object window) |
4464 | { | |
4465 | register Lisp_Object parent, sibling, frame, root; | |
4466 | struct window *w, *p, *s, *r; | |
4467 | struct frame *f; | |
e74aeda8 | 4468 | bool horflag, before_sibling = 0; |
1a13852e MR |
4469 | |
4470 | w = decode_any_window (window); | |
4471 | XSETWINDOW (window, w); | |
e74aeda8 | 4472 | if (NILP (w->contents)) |
1a13852e MR |
4473 | /* It's a no-op to delete an already deleted window. */ |
4474 | return Qnil; | |
4475 | ||
d3d50620 | 4476 | parent = w->parent; |
1a13852e MR |
4477 | if (NILP (parent)) |
4478 | /* Never delete a minibuffer or frame root window. */ | |
4479 | error ("Attempt to delete minibuffer or sole ordinary window"); | |
d3d50620 | 4480 | else if (NILP (w->prev) && NILP (w->next)) |
1a13852e MR |
4481 | /* Rather bow out here, this case should be handled on the Elisp |
4482 | level. */ | |
4483 | error ("Attempt to delete sole window of parent"); | |
4484 | ||
4485 | p = XWINDOW (parent); | |
e74aeda8 | 4486 | horflag = WINDOW_HORIZONTAL_COMBINATION_P (p); |
1a13852e MR |
4487 | |
4488 | frame = WINDOW_FRAME (w); | |
4489 | f = XFRAME (frame); | |
4490 | ||
4491 | root = FRAME_ROOT_WINDOW (f); | |
4492 | r = XWINDOW (root); | |
4493 | ||
4494 | /* Unlink WINDOW from window tree. */ | |
d3d50620 | 4495 | if (NILP (w->prev)) |
1a13852e MR |
4496 | /* Get SIBLING below (on the right of) WINDOW. */ |
4497 | { | |
4498 | /* before_sibling 1 means WINDOW is the first child of its | |
4499 | parent and thus before the sibling. */ | |
4500 | before_sibling = 1; | |
d3d50620 | 4501 | sibling = w->next; |
1a13852e | 4502 | s = XWINDOW (sibling); |
e8c17b81 | 4503 | wset_prev (s, Qnil); |
e74aeda8 | 4504 | wset_combination (p, horflag, sibling); |
1a13852e MR |
4505 | } |
4506 | else | |
4507 | /* Get SIBLING above (on the left of) WINDOW. */ | |
4508 | { | |
d3d50620 | 4509 | sibling = w->prev; |
1a13852e | 4510 | s = XWINDOW (sibling); |
e8c17b81 | 4511 | wset_next (s, w->next); |
d3d50620 | 4512 | if (!NILP (s->next)) |
e8c17b81 | 4513 | wset_prev (XWINDOW (s->next), sibling); |
7ab12479 JB |
4514 | } |
4515 | ||
d615d6d2 | 4516 | if (window_resize_check (r, horflag) |
880e6158 MR |
4517 | && (XINT (r->new_pixel) |
4518 | == (horflag ? r->pixel_width : r->pixel_height))) | |
562dd5e9 MR |
4519 | /* We can delete WINDOW now. */ |
4520 | { | |
95986d52 | 4521 | |
562dd5e9 | 4522 | /* Block input. */ |
4d7e6e51 | 4523 | block_input (); |
d615d6d2 | 4524 | window_resize_apply (p, horflag); |
95986d52 CY |
4525 | /* If this window is referred to by the dpyinfo's mouse |
4526 | highlight, invalidate that slot to be safe (Bug#9904). */ | |
4c5501e9 EZ |
4527 | if (!FRAME_INITIAL_P (f)) |
4528 | { | |
4529 | Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f); | |
4530 | ||
4531 | if (EQ (hlinfo->mouse_face_window, window)) | |
4532 | hlinfo->mouse_face_window = Qnil; | |
4533 | } | |
95986d52 | 4534 | |
5961ad6c | 4535 | fset_redisplay (f); |
562dd5e9 MR |
4536 | Vwindow_list = Qnil; |
4537 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
0d384044 | 4538 | |
e8c17b81 | 4539 | wset_next (w, Qnil); /* Don't delete w->next too. */ |
562dd5e9 | 4540 | free_window_matrices (w); |
bd99e242 | 4541 | |
e74aeda8 | 4542 | if (WINDOWP (w->contents)) |
0d384044 | 4543 | { |
e74aeda8 DA |
4544 | delete_all_child_windows (w->contents); |
4545 | wset_combination (w, 0, Qnil); | |
0d384044 | 4546 | } |
e74aeda8 | 4547 | else |
bd99e242 | 4548 | { |
562dd5e9 | 4549 | unshow_buffer (w); |
d3d50620 DA |
4550 | unchain_marker (XMARKER (w->pointm)); |
4551 | unchain_marker (XMARKER (w->start)); | |
e8c17b81 | 4552 | wset_buffer (w, Qnil); |
bd99e242 RS |
4553 | } |
4554 | ||
d3d50620 | 4555 | if (NILP (s->prev) && NILP (s->next)) |
562dd5e9 MR |
4556 | /* A matrjoshka where SIBLING has become the only child of |
4557 | PARENT. */ | |
c32de52a | 4558 | { |
562dd5e9 MR |
4559 | /* Put SIBLING into PARENT's place. */ |
4560 | replace_window (parent, sibling, 0); | |
4561 | /* Have SIBLING inherit the following three slot values from | |
b6f67890 | 4562 | PARENT (the combination_limit slot is not inherited). */ |
e8c17b81 PE |
4563 | wset_normal_cols (s, p->normal_cols); |
4564 | wset_normal_lines (s, p->normal_lines); | |
562dd5e9 | 4565 | /* Mark PARENT as deleted. */ |
e74aeda8 | 4566 | wset_combination (p, 0, Qnil); |
562dd5e9 MR |
4567 | /* Try to merge SIBLING into its new parent. */ |
4568 | recombine_windows (sibling); | |
c32de52a RS |
4569 | } |
4570 | ||
bd0443bb | 4571 | adjust_frame_glyphs (f); |
562dd5e9 MR |
4572 | |
4573 | if (!WINDOW_LIVE_P (FRAME_SELECTED_WINDOW (f))) | |
4574 | /* We deleted the frame's selected window. */ | |
0d384044 | 4575 | { |
562dd5e9 MR |
4576 | /* Use the frame's first window as fallback ... */ |
4577 | Lisp_Object new_selected_window = Fframe_first_window (frame); | |
4578 | /* ... but preferably use its most recently used window. */ | |
4579 | Lisp_Object mru_window; | |
0d384044 | 4580 | |
562dd5e9 MR |
4581 | /* `get-mru-window' might fail for some reason so play it safe |
4582 | - promote the first window _without recording it_ first. */ | |
4583 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
4584 | Fselect_window (new_selected_window, Qt); | |
4585 | else | |
f00af5b1 | 4586 | fset_selected_window (f, new_selected_window); |
0d384044 | 4587 | |
4d7e6e51 | 4588 | unblock_input (); |
0d384044 | 4589 | |
562dd5e9 MR |
4590 | /* Now look whether `get-mru-window' gets us something. */ |
4591 | mru_window = call1 (Qget_mru_window, frame); | |
4592 | if (WINDOW_LIVE_P (mru_window) | |
d3d50620 | 4593 | && EQ (XWINDOW (mru_window)->frame, frame)) |
562dd5e9 | 4594 | new_selected_window = mru_window; |
bd99e242 | 4595 | |
562dd5e9 MR |
4596 | /* If all ended up well, we now promote the mru window. */ |
4597 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
4598 | Fselect_window (new_selected_window, Qnil); | |
4599 | else | |
f00af5b1 | 4600 | fset_selected_window (f, new_selected_window); |
0d384044 RS |
4601 | } |
4602 | else | |
4d7e6e51 | 4603 | unblock_input (); |
0d384044 | 4604 | |
562dd5e9 MR |
4605 | /* Must be run by the caller: |
4606 | run_window_configuration_change_hook (f); */ | |
0d384044 | 4607 | } |
562dd5e9 MR |
4608 | else |
4609 | /* We failed: Relink WINDOW into window tree. */ | |
0d384044 | 4610 | { |
562dd5e9 MR |
4611 | if (before_sibling) |
4612 | { | |
e8c17b81 | 4613 | wset_prev (s, window); |
e74aeda8 | 4614 | wset_combination (p, horflag, window); |
562dd5e9 MR |
4615 | } |
4616 | else | |
4617 | { | |
e8c17b81 | 4618 | wset_next (s, window); |
d3d50620 | 4619 | if (!NILP (w->next)) |
e8c17b81 | 4620 | wset_prev (XWINDOW (w->next), window); |
562dd5e9 MR |
4621 | } |
4622 | error ("Deletion failed"); | |
0d384044 RS |
4623 | } |
4624 | ||
0d384044 RS |
4625 | return Qnil; |
4626 | } | |
f984d4fc GM |
4627 | \f |
4628 | /*********************************************************************** | |
4629 | Resizing Mini-Windows | |
4630 | ***********************************************************************/ | |
4631 | ||
562dd5e9 MR |
4632 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we |
4633 | can. */ | |
4634 | void | |
880e6158 | 4635 | grow_mini_window (struct window *w, int delta, bool pixelwise) |
f984d4fc | 4636 | { |
d3d50620 | 4637 | struct frame *f = XFRAME (w->frame); |
562dd5e9 | 4638 | struct window *r; |
880e6158 MR |
4639 | Lisp_Object root, height; |
4640 | int line_height, pixel_height; | |
f984d4fc | 4641 | |
a54e2c05 DA |
4642 | eassert (MINI_WINDOW_P (w)); |
4643 | eassert (delta >= 0); | |
f984d4fc | 4644 | |
880e6158 | 4645 | if (delta > 0) |
f984d4fc | 4646 | { |
880e6158 MR |
4647 | root = FRAME_ROOT_WINDOW (f); |
4648 | r = XWINDOW (root); | |
4649 | height = call3 (Qwindow_resize_root_window_vertically, | |
4650 | root, make_number (- delta), pixelwise ? Qt : Qnil); | |
4651 | if (INTEGERP (height) && window_resize_check (r, 0)) | |
4652 | { | |
4653 | block_input (); | |
4654 | window_resize_apply (r, 0); | |
f984d4fc | 4655 | |
880e6158 MR |
4656 | if (pixelwise) |
4657 | { | |
91415fb1 | 4658 | pixel_height = min (-XINT (height), INT_MAX - w->pixel_height); |
880e6158 MR |
4659 | line_height = pixel_height / FRAME_LINE_HEIGHT (f); |
4660 | } | |
4661 | else | |
4662 | { | |
91415fb1 MR |
4663 | line_height = min (-XINT (height), |
4664 | ((INT_MAX - w->pixel_height) | |
4665 | / FRAME_LINE_HEIGHT (f))); | |
880e6158 MR |
4666 | pixel_height = line_height * FRAME_LINE_HEIGHT (f); |
4667 | } | |
4668 | ||
4669 | /* Grow the mini-window. */ | |
4670 | w->pixel_top = r->pixel_top + r->pixel_height; | |
4671 | w->top_line = r->top_line + r->total_lines; | |
91415fb1 MR |
4672 | /* Make sure the mini-window has always at least one line. */ |
4673 | w->pixel_height = max (w->pixel_height + pixel_height, | |
4674 | FRAME_LINE_HEIGHT (f)); | |
4675 | w->total_lines = max (w->total_lines + line_height, 1); | |
880e6158 MR |
4676 | |
4677 | /* Enforce full redisplay of the frame. */ | |
4678 | /* FIXME: Shouldn't window--resize-root-window-vertically do it? */ | |
4679 | fset_redisplay (f); | |
4680 | adjust_frame_glyphs (f); | |
4681 | unblock_input (); | |
4682 | } | |
f984d4fc GM |
4683 | } |
4684 | } | |
4685 | ||
880e6158 | 4686 | /* Shrink mini-window W to one line. */ |
562dd5e9 | 4687 | void |
880e6158 | 4688 | shrink_mini_window (struct window *w, bool pixelwise) |
f984d4fc | 4689 | { |
d3d50620 | 4690 | struct frame *f = XFRAME (w->frame); |
562dd5e9 | 4691 | struct window *r; |
880e6158 MR |
4692 | Lisp_Object root, delta; |
4693 | EMACS_INT height, unit; | |
43b4a21f | 4694 | |
a54e2c05 | 4695 | eassert (MINI_WINDOW_P (w)); |
177c0ea7 | 4696 | |
6ae87264 | 4697 | height = pixelwise ? w->pixel_height : w->total_lines; |
880e6158 MR |
4698 | unit = pixelwise ? FRAME_LINE_HEIGHT (f) : 1; |
4699 | if (height > unit) | |
562dd5e9 MR |
4700 | { |
4701 | root = FRAME_ROOT_WINDOW (f); | |
4702 | r = XWINDOW (root); | |
880e6158 MR |
4703 | delta = call3 (Qwindow_resize_root_window_vertically, |
4704 | root, make_number (height - unit), | |
4705 | pixelwise ? Qt : Qnil); | |
4706 | if (INTEGERP (delta) && window_resize_check (r, 0)) | |
f984d4fc | 4707 | { |
4d7e6e51 | 4708 | block_input (); |
d615d6d2 | 4709 | window_resize_apply (r, 0); |
43b4a21f | 4710 | |
562dd5e9 | 4711 | /* Shrink the mini-window. */ |
5f24fa51 DA |
4712 | w->top_line = r->top_line + r->total_lines; |
4713 | w->total_lines = 1; | |
880e6158 MR |
4714 | w->pixel_top = r->pixel_top + r->pixel_height; |
4715 | w->pixel_height = FRAME_LINE_HEIGHT (f); | |
655ab9a3 SM |
4716 | /* Enforce full redisplay of the frame. */ |
4717 | /* FIXME: Shouldn't window--resize-root-window-vertically do it? */ | |
4718 | fset_redisplay (f); | |
bd0443bb | 4719 | adjust_frame_glyphs (f); |
4d7e6e51 | 4720 | unblock_input (); |
f984d4fc | 4721 | } |
562dd5e9 MR |
4722 | /* If the above failed for whatever strange reason we must make a |
4723 | one window frame here. The same routine will be needed when | |
4724 | shrinking the frame (and probably when making the initial | |
4725 | *scratch* window). For the moment leave things as they are. */ | |
f984d4fc GM |
4726 | } |
4727 | } | |
4728 | ||
562dd5e9 MR |
4729 | DEFUN ("resize-mini-window-internal", Fresize_mini_window_internal, Sresize_mini_window_internal, 1, 1, 0, |
4730 | doc: /* Resize minibuffer window WINDOW. */) | |
4731 | (Lisp_Object window) | |
f984d4fc | 4732 | { |
562dd5e9 MR |
4733 | struct window *w = XWINDOW (window); |
4734 | struct window *r; | |
4735 | struct frame *f; | |
4736 | int height; | |
177c0ea7 | 4737 | |
562dd5e9 | 4738 | CHECK_WINDOW (window); |
d3d50620 | 4739 | f = XFRAME (w->frame); |
177c0ea7 | 4740 | |
d3d50620 | 4741 | if (!EQ (FRAME_MINIBUF_WINDOW (XFRAME (w->frame)), window)) |
562dd5e9 MR |
4742 | error ("Not a valid minibuffer window"); |
4743 | else if (FRAME_MINIBUF_ONLY_P (f)) | |
4744 | error ("Cannot resize a minibuffer-only frame"); | |
177c0ea7 | 4745 | |
562dd5e9 | 4746 | r = XWINDOW (FRAME_ROOT_WINDOW (f)); |
880e6158 | 4747 | height = r->pixel_height + w->pixel_height; |
d615d6d2 | 4748 | if (window_resize_check (r, 0) |
880e6158 MR |
4749 | && XINT (w->new_pixel) > 0 |
4750 | && height == XINT (r->new_pixel) + XINT (w->new_pixel)) | |
f984d4fc | 4751 | { |
4d7e6e51 | 4752 | block_input (); |
d615d6d2 | 4753 | window_resize_apply (r, 0); |
f984d4fc | 4754 | |
5f24fa51 DA |
4755 | w->total_lines = XFASTINT (w->new_total); |
4756 | w->top_line = r->top_line + r->total_lines; | |
880e6158 MR |
4757 | w->pixel_height = XFASTINT (w->new_pixel); |
4758 | w->pixel_top = r->pixel_top + r->pixel_height; | |
177c0ea7 | 4759 | |
5961ad6c | 4760 | fset_redisplay (f); |
562dd5e9 | 4761 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
bd0443bb | 4762 | adjust_frame_glyphs (f); |
4d7e6e51 | 4763 | unblock_input (); |
562dd5e9 | 4764 | return Qt; |
86c8e823 | 4765 | } |
880e6158 MR |
4766 | else |
4767 | error ("Failed to resize minibuffer window"); | |
f984d4fc | 4768 | } |
562dd5e9 | 4769 | \f |
5500c422 GM |
4770 | /* Mark window cursors off for all windows in the window tree rooted |
4771 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4772 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4773 | the frame are cleared. */ | |
4774 | ||
4775 | void | |
971de7fb | 4776 | mark_window_cursors_off (struct window *w) |
5500c422 GM |
4777 | { |
4778 | while (w) | |
4779 | { | |
e74aeda8 DA |
4780 | if (WINDOWP (w->contents)) |
4781 | mark_window_cursors_off (XWINDOW (w->contents)); | |
5500c422 GM |
4782 | else |
4783 | w->phys_cursor_on_p = 0; | |
4784 | ||
d3d50620 | 4785 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
5500c422 GM |
4786 | } |
4787 | } | |
4788 | ||
4789 | ||
e9c195b1 | 4790 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4791 | |
4792 | int | |
971de7fb | 4793 | window_internal_height (struct window *w) |
7ab12479 | 4794 | { |
5f24fa51 | 4795 | int ht = w->total_lines; |
7ab12479 | 4796 | |
e9c195b1 GM |
4797 | if (!MINI_WINDOW_P (w)) |
4798 | { | |
d3d50620 | 4799 | if (!NILP (w->parent) |
e74aeda8 | 4800 | || WINDOWP (w->contents) |
d3d50620 DA |
4801 | || !NILP (w->next) |
4802 | || !NILP (w->prev) | |
e9c195b1 GM |
4803 | || WINDOW_WANTS_MODELINE_P (w)) |
4804 | --ht; | |
7ab12479 | 4805 | |
e9c195b1 GM |
4806 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4807 | --ht; | |
4808 | } | |
7ab12479 JB |
4809 | |
4810 | return ht; | |
4811 | } | |
5500c422 GM |
4812 | \f |
4813 | /************************************************************************ | |
4814 | Window Scrolling | |
4815 | ***********************************************************************/ | |
535e0b8e | 4816 | |
5500c422 | 4817 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4818 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4819 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4820 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4821 | means don't signal an error if we try to move over BEGV or ZV, | |
4822 | respectively. */ | |
7ab12479 | 4823 | |
101d1605 | 4824 | static void |
56b5d5b1 | 4825 | window_scroll (Lisp_Object window, EMACS_INT n, bool whole, int noerror) |
5500c422 | 4826 | { |
cba59f77 | 4827 | immediate_quit = 1; |
d311d28c | 4828 | n = clip_to_bounds (INT_MIN, n, INT_MAX); |
cba59f77 | 4829 | |
5961ad6c SM |
4830 | wset_redisplay (XWINDOW (window)); |
4831 | ||
5500c422 GM |
4832 | /* If we must, use the pixel-based version which is much slower than |
4833 | the line-based one but can handle varying line heights. */ | |
d3d50620 | 4834 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) |
5500c422 GM |
4835 | window_scroll_pixel_based (window, n, whole, noerror); |
4836 | else | |
4837 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 | 4838 | |
72fdd473 MR |
4839 | /* Bug#15957. */ |
4840 | XWINDOW (window)->window_end_valid = 0; | |
cba59f77 | 4841 | immediate_quit = 0; |
5500c422 GM |
4842 | } |
4843 | ||
4844 | ||
4845 | /* Implementation of window_scroll that works based on pixel line | |
4846 | heights. See the comment of window_scroll for parameter | |
4847 | descriptions. */ | |
4848 | ||
4849 | static void | |
56b5d5b1 | 4850 | window_scroll_pixel_based (Lisp_Object window, int n, bool whole, int noerror) |
5500c422 GM |
4851 | { |
4852 | struct it it; | |
4853 | struct window *w = XWINDOW (window); | |
4854 | struct text_pos start; | |
5500c422 | 4855 | int this_scroll_margin; |
9d14503e | 4856 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5cdb3cf3 | 4857 | int vscrolled = 0; |
5a857365 | 4858 | int x, y, rtop, rbot, rowh, vpos; |
57b3e30b | 4859 | void *itdata = NULL; |
fdda0220 EZ |
4860 | int window_total_lines; |
4861 | int frame_line_height = default_line_pixel_height (w); | |
5500c422 | 4862 | |
d3d50620 | 4863 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
f0ee99a0 EZ |
4864 | /* Scrolling a minibuffer window via scroll bar when the echo area |
4865 | shows long text sometimes resets the minibuffer contents behind | |
4866 | our backs. */ | |
4867 | if (CHARPOS (start) > ZV) | |
4868 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
177c0ea7 | 4869 | |
5500c422 | 4870 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4871 | the screen. Allow PT to be partially visible, otherwise |
4872 | something like (scroll-down 1) with PT in the line before | |
3da983f8 | 4873 | the partially visible one would recenter. */ |
5a857365 KS |
4874 | |
4875 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 | 4876 | { |
57b3e30b | 4877 | itdata = bidi_shelve_cache (); |
5500c422 GM |
4878 | /* Move backward half the height of the window. Performance note: |
4879 | vmotion used here is about 10% faster, but would give wrong | |
4880 | results for variable height lines. */ | |
4881 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4882 | it.current_y = it.last_visible_y; | |
f204989e | 4883 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4884 | |
5500c422 GM |
4885 | /* The function move_iterator_vertically may move over more than |
4886 | the specified y-distance. If it->w is small, e.g. a | |
4887 | mini-buffer window, we may end up in front of the window's | |
4888 | display area. This is the case when Start displaying at the | |
4889 | start of the line containing PT in this case. */ | |
4890 | if (it.current_y <= 0) | |
4891 | { | |
4892 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4893 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4894 | it.current_y = 0; |
4895 | } | |
4896 | ||
4897 | start = it.current.pos; | |
35928349 | 4898 | bidi_unshelve_cache (itdata, 0); |
5500c422 | 4899 | } |
e56263e5 KS |
4900 | else if (auto_window_vscroll_p) |
4901 | { | |
3da983f8 | 4902 | if (rtop || rbot) /* Partially visible. */ |
e56263e5 KS |
4903 | { |
4904 | int px; | |
fdda0220 | 4905 | int dy = frame_line_height; |
e56263e5 | 4906 | if (whole) |
e856c216 KS |
4907 | dy = max ((window_box_height (w) |
4908 | - next_screen_context_lines * dy), | |
4909 | dy); | |
e56263e5 KS |
4910 | dy *= n; |
4911 | ||
5a857365 | 4912 | if (n < 0) |
e56263e5 | 4913 | { |
5a857365 KS |
4914 | /* Only vscroll backwards if already vscrolled forwards. */ |
4915 | if (w->vscroll < 0 && rtop > 0) | |
4916 | { | |
4917 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
4918 | Fset_window_vscroll (window, make_number (px), Qt); | |
4919 | return; | |
4920 | } | |
e56263e5 | 4921 | } |
5a857365 | 4922 | if (n > 0) |
e56263e5 | 4923 | { |
5a857365 KS |
4924 | /* Do vscroll if already vscrolled or only display line. */ |
4925 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
4926 | { | |
4927 | px = max (0, -w->vscroll + min (rbot, dy)); | |
4928 | Fset_window_vscroll (window, make_number (px), Qt); | |
4929 | return; | |
4930 | } | |
4931 | ||
4932 | /* Maybe modify window start instead of scrolling. */ | |
4933 | if (rbot > 0 || w->vscroll < 0) | |
4934 | { | |
d311d28c | 4935 | ptrdiff_t spos; |
5a857365 KS |
4936 | |
4937 | Fset_window_vscroll (window, make_number (0), Qt); | |
4938 | /* If there are other text lines above the current row, | |
4939 | move window start to current row. Else to next row. */ | |
4940 | if (rbot > 0) | |
4941 | spos = XINT (Fline_beginning_position (Qnil)); | |
4942 | else | |
4943 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
d3d50620 | 4944 | set_marker_restricted (w->start, make_number (spos), |
e74aeda8 | 4945 | w->contents); |
c98ff5dd DA |
4946 | w->start_at_line_beg = 1; |
4947 | w->update_mode_line = 1; | |
5a857365 KS |
4948 | /* Set force_start so that redisplay_window will run the |
4949 | window-scroll-functions. */ | |
c98ff5dd | 4950 | w->force_start = 1; |
5a857365 KS |
4951 | return; |
4952 | } | |
e56263e5 KS |
4953 | } |
4954 | } | |
5a857365 | 4955 | /* Cancel previous vscroll. */ |
e56263e5 KS |
4956 | Fset_window_vscroll (window, make_number (0), Qt); |
4957 | } | |
5500c422 | 4958 | |
57b3e30b | 4959 | itdata = bidi_shelve_cache (); |
d0c38d63 | 4960 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
4961 | point in the same window line as it is now, so get that line. */ |
4962 | if (!NILP (Vscroll_preserve_screen_position)) | |
4963 | { | |
c525d842 | 4964 | /* We preserve the goal pixel coordinate across consecutive |
a4b000fb JL |
4965 | calls to scroll-up, scroll-down and other commands that |
4966 | have the `scroll-command' property. This avoids the | |
c525d842 CY |
4967 | possibility of point becoming "stuck" on a tall line when |
4968 | scrolling by one line. */ | |
66fe93d1 | 4969 | if (window_scroll_pixel_based_preserve_y < 0 |
1344aad4 TT |
4970 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4971 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c525d842 CY |
4972 | { |
4973 | start_display (&it, w, start); | |
4974 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 4975 | window_scroll_pixel_based_preserve_y = it.current_y; |
c876b227 | 4976 | window_scroll_pixel_based_preserve_x = it.current_x; |
c525d842 | 4977 | } |
5500c422 GM |
4978 | } |
4979 | else | |
c876b227 SM |
4980 | window_scroll_pixel_based_preserve_y |
4981 | = window_scroll_pixel_based_preserve_x = -1; | |
5500c422 GM |
4982 | |
4983 | /* Move iterator it from start the specified distance forward or | |
4984 | backward. The result is the new window start. */ | |
4985 | start_display (&it, w, start); | |
4986 | if (whole) | |
4987 | { | |
d311d28c | 4988 | ptrdiff_t start_pos = IT_CHARPOS (it); |
fdda0220 | 4989 | int dy = frame_line_height; |
e856c216 KS |
4990 | dy = max ((window_box_height (w) |
4991 | - next_screen_context_lines * dy), | |
4992 | dy) * n; | |
d72340d4 GM |
4993 | |
4994 | /* Note that move_it_vertically always moves the iterator to the | |
4995 | start of a line. So, if the last line doesn't have a newline, | |
4996 | we would end up at the start of the line ending at ZV. */ | |
4997 | if (dy <= 0) | |
e856c216 KS |
4998 | { |
4999 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 5000 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
5001 | looking at an image that is taller that the window height. */ |
5002 | while (start_pos == IT_CHARPOS (it) | |
5003 | && start_pos > BEGV) | |
e4cc2dfc | 5004 | move_it_by_lines (&it, -1); |
e856c216 | 5005 | } |
d72340d4 | 5006 | else if (dy > 0) |
bed83ee4 | 5007 | { |
bed83ee4 KS |
5008 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
5009 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 5010 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
5011 | looking at an image that is taller that the window height. */ |
5012 | while (start_pos == IT_CHARPOS (it) | |
5013 | && start_pos < ZV) | |
e4cc2dfc | 5014 | move_it_by_lines (&it, 1); |
bed83ee4 | 5015 | } |
5500c422 GM |
5016 | } |
5017 | else | |
e4cc2dfc | 5018 | move_it_by_lines (&it, n); |
5500c422 | 5019 | |
96ae58c8 RS |
5020 | /* We failed if we find ZV is already on the screen (scrolling up, |
5021 | means there's nothing past the end), or if we can't start any | |
5022 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 5023 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 5024 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 5025 | { |
5cdb3cf3 MB |
5026 | if (IT_CHARPOS (it) == ZV) |
5027 | { | |
07ce8b53 RS |
5028 | if (it.current_y < it.last_visible_y |
5029 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 5030 | > it.last_visible_y)) |
a74eca50 GM |
5031 | { |
5032 | /* The last line was only partially visible, make it fully | |
5033 | visible. */ | |
5034 | w->vscroll = (it.last_visible_y | |
5035 | - it.current_y + it.max_ascent + it.max_descent); | |
bd0443bb | 5036 | adjust_frame_glyphs (it.f); |
a74eca50 | 5037 | } |
5cdb3cf3 | 5038 | else |
57b3e30b | 5039 | { |
35928349 | 5040 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
5041 | if (noerror) |
5042 | return; | |
5043 | else if (n < 0) /* could happen with empty buffers */ | |
5044 | xsignal0 (Qbeginning_of_buffer); | |
5045 | else | |
5046 | xsignal0 (Qend_of_buffer); | |
5047 | } | |
5cdb3cf3 | 5048 | } |
5500c422 | 5049 | else |
5cdb3cf3 MB |
5050 | { |
5051 | if (w->vscroll != 0) | |
5052 | /* The first line was only partially visible, make it fully | |
5053 | visible. */ | |
5054 | w->vscroll = 0; | |
5cdb3cf3 | 5055 | else |
57b3e30b | 5056 | { |
35928349 | 5057 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
5058 | if (noerror) |
5059 | return; | |
5060 | else | |
5061 | xsignal0 (Qbeginning_of_buffer); | |
5062 | } | |
5cdb3cf3 MB |
5063 | } |
5064 | ||
5065 | /* If control gets here, then we vscrolled. */ | |
5066 | ||
e74aeda8 | 5067 | XBUFFER (w->contents)->prevent_redisplay_optimizations_p = 1; |
5cdb3cf3 MB |
5068 | |
5069 | /* Don't try to change the window start below. */ | |
5070 | vscrolled = 1; | |
5500c422 GM |
5071 | } |
5072 | ||
5cdb3cf3 MB |
5073 | if (! vscrolled) |
5074 | { | |
d311d28c PE |
5075 | ptrdiff_t pos = IT_CHARPOS (it); |
5076 | ptrdiff_t bytepos; | |
e68def1e AS |
5077 | |
5078 | /* If in the middle of a multi-glyph character move forward to | |
5079 | the next character. */ | |
5080 | if (in_display_vector_p (&it)) | |
5081 | { | |
5082 | ++pos; | |
5083 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
5084 | } | |
5085 | ||
5cdb3cf3 | 5086 | /* Set the window start, and set up the window for redisplay. */ |
e74aeda8 | 5087 | set_marker_restricted_both (w->start, w->contents, IT_CHARPOS (it), |
f74de345 | 5088 | IT_BYTEPOS (it)); |
4c1acb95 | 5089 | bytepos = marker_byte_position (w->start); |
c98ff5dd DA |
5090 | w->start_at_line_beg = (pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n'); |
5091 | w->update_mode_line = 1; | |
5cdb3cf3 MB |
5092 | /* Set force_start so that redisplay_window will run the |
5093 | window-scroll-functions. */ | |
c98ff5dd | 5094 | w->force_start = 1; |
5cdb3cf3 | 5095 | } |
177c0ea7 | 5096 | |
dc297565 RS |
5097 | /* The rest of this function uses current_y in a nonstandard way, |
5098 | not including the height of the header line if any. */ | |
5500c422 | 5099 | it.current_y = it.vpos = 0; |
177c0ea7 | 5100 | |
940f53e5 RS |
5101 | /* Move PT out of scroll margins. |
5102 | This code wants current_y to be zero at the window start position | |
5103 | even if there is a header line. */ | |
fdda0220 EZ |
5104 | window_total_lines |
5105 | = w->total_lines * WINDOW_FRAME_LINE_HEIGHT (w) / frame_line_height; | |
940f53e5 | 5106 | this_scroll_margin = max (0, scroll_margin); |
3a45383a | 5107 | this_scroll_margin |
fdda0220 EZ |
5108 | = min (this_scroll_margin, window_total_lines / 4); |
5109 | this_scroll_margin *= frame_line_height; | |
940f53e5 RS |
5110 | |
5111 | if (n > 0) | |
5500c422 | 5112 | { |
940f53e5 RS |
5113 | /* We moved the window start towards ZV, so PT may be now |
5114 | in the scroll margin at the top. */ | |
5115 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
5116 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
5117 | && (NILP (Vscroll_preserve_screen_position) | |
5118 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5119 | /* We found PT at a legitimate height. Leave it alone. */ |
5120 | ; | |
66fe93d1 | 5121 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 5122 | { |
fa3c3426 RS |
5123 | /* If we have a header line, take account of it. |
5124 | This is necessary because we set it.current_y to 0, above. */ | |
c876b227 SM |
5125 | move_it_to (&it, -1, |
5126 | window_scroll_pixel_based_preserve_x, | |
66fe93d1 LT |
5127 | window_scroll_pixel_based_preserve_y |
5128 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c876b227 | 5129 | -1, MOVE_TO_Y | MOVE_TO_X); |
940f53e5 RS |
5130 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5131 | } | |
5132 | else | |
5500c422 | 5133 | { |
5500c422 | 5134 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
5135 | { |
5136 | int prev = it.current_y; | |
e4cc2dfc | 5137 | move_it_by_lines (&it, 1); |
e9b2c961 RS |
5138 | if (prev == it.current_y) |
5139 | break; | |
5140 | } | |
5500c422 GM |
5141 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5142 | } | |
940f53e5 RS |
5143 | } |
5144 | else if (n < 0) | |
5145 | { | |
d311d28c | 5146 | ptrdiff_t charpos, bytepos; |
aed328bf | 5147 | int partial_p; |
940f53e5 | 5148 | |
66fe93d1 LT |
5149 | /* Save our position, for the |
5150 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
5151 | charpos = IT_CHARPOS (it); |
5152 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 5153 | |
940f53e5 RS |
5154 | /* We moved the window start towards BEGV, so PT may be now |
5155 | in the scroll margin at the bottom. */ | |
5156 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
5157 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
5158 | - this_scroll_margin - 1), | |
5159 | -1, | |
940f53e5 RS |
5160 | MOVE_TO_POS | MOVE_TO_Y); |
5161 | ||
aed328bf KS |
5162 | /* Save our position, in case it's correct. */ |
5163 | charpos = IT_CHARPOS (it); | |
5164 | bytepos = IT_BYTEPOS (it); | |
5165 | ||
5166 | /* See if point is on a partially visible line at the end. */ | |
5167 | if (it.what == IT_EOB) | |
5168 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
5169 | else | |
5170 | { | |
e4cc2dfc | 5171 | move_it_by_lines (&it, 1); |
aed328bf KS |
5172 | partial_p = it.current_y > it.last_visible_y; |
5173 | } | |
5174 | ||
bdf4ec93 RS |
5175 | if (charpos == PT && !partial_p |
5176 | && (NILP (Vscroll_preserve_screen_position) | |
5177 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5178 | /* We found PT before we found the display margin, so PT is ok. */ |
5179 | ; | |
66fe93d1 | 5180 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 5181 | { |
d3d50620 | 5182 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
940f53e5 | 5183 | start_display (&it, w, start); |
c525d842 CY |
5184 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
5185 | here because we called start_display again and did not | |
5186 | alter it.current_y this time. */ | |
c876b227 SM |
5187 | move_it_to (&it, -1, window_scroll_pixel_based_preserve_x, |
5188 | window_scroll_pixel_based_preserve_y, -1, | |
5189 | MOVE_TO_Y | MOVE_TO_X); | |
940f53e5 RS |
5190 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5191 | } | |
5192 | else | |
5193 | { | |
aed328bf | 5194 | if (partial_p) |
5cdb3cf3 MB |
5195 | /* The last line was only partially visible, so back up two |
5196 | lines to make sure we're on a fully visible line. */ | |
5197 | { | |
e4cc2dfc | 5198 | move_it_by_lines (&it, -2); |
5cdb3cf3 MB |
5199 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5200 | } | |
5201 | else | |
5202 | /* No, the position we saved is OK, so use it. */ | |
5203 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
5204 | } |
5205 | } | |
35928349 | 5206 | bidi_unshelve_cache (itdata, 0); |
5500c422 GM |
5207 | } |
5208 | ||
5209 | ||
5210 | /* Implementation of window_scroll that works based on screen lines. | |
5211 | See the comment of window_scroll for parameter descriptions. */ | |
5212 | ||
5213 | static void | |
56b5d5b1 | 5214 | window_scroll_line_based (Lisp_Object window, int n, bool whole, int noerror) |
7ab12479 JB |
5215 | { |
5216 | register struct window *w = XWINDOW (window); | |
03ab8921 EZ |
5217 | /* Fvertical_motion enters redisplay, which can trigger |
5218 | fontification, which in turn can modify buffer text (e.g., if the | |
5219 | fontification functions replace escape sequences with faces, as | |
5220 | in `grep-mode-font-lock-keywords'). So we use a marker to record | |
5221 | the old point position, to prevent crashes in SET_PT_BOTH. */ | |
5222 | Lisp_Object opoint_marker = Fpoint_marker (); | |
d311d28c | 5223 | register ptrdiff_t pos, pos_byte; |
7ab12479 JB |
5224 | register int ht = window_internal_height (w); |
5225 | register Lisp_Object tem; | |
56b5d5b1 | 5226 | bool lose; |
5500c422 | 5227 | Lisp_Object bolp; |
c54aa166 DA |
5228 | ptrdiff_t startpos = marker_position (w->start); |
5229 | ptrdiff_t startbyte = marker_byte_position (w->start); | |
c876b227 | 5230 | Lisp_Object original_pos = Qnil; |
101d1605 | 5231 | |
d4e7cf01 GM |
5232 | /* If scrolling screen-fulls, compute the number of lines to |
5233 | scroll from the window's height. */ | |
5234 | if (whole) | |
5235 | n *= max (1, ht - next_screen_context_lines); | |
5236 | ||
c876b227 SM |
5237 | if (!NILP (Vscroll_preserve_screen_position)) |
5238 | { | |
5239 | if (window_scroll_preserve_vpos <= 0 | |
1344aad4 TT |
5240 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
5241 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c876b227 SM |
5242 | { |
5243 | struct position posit | |
c54aa166 DA |
5244 | = *compute_motion (startpos, startbyte, 0, 0, 0, |
5245 | PT, ht, 0, -1, w->hscroll, 0, w); | |
c876b227 | 5246 | window_scroll_preserve_vpos = posit.vpos; |
80b00b08 | 5247 | window_scroll_preserve_hpos = posit.hpos + w->hscroll; |
c876b227 SM |
5248 | } |
5249 | ||
5250 | original_pos = Fcons (make_number (window_scroll_preserve_hpos), | |
5251 | make_number (window_scroll_preserve_vpos)); | |
5252 | } | |
0a1f771a | 5253 | |
d834a2e9 | 5254 | XSETFASTINT (tem, PT); |
6ffdb539 | 5255 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 5256 | |
265a9e55 | 5257 | if (NILP (tem)) |
7ab12479 | 5258 | { |
cd2be1dd | 5259 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 5260 | startpos = PT; |
c54aa166 | 5261 | startbyte = PT_BYTE; |
7ab12479 JB |
5262 | } |
5263 | ||
c54aa166 | 5264 | SET_PT_BOTH (startpos, startbyte); |
5ce7b543 | 5265 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 5266 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 5267 | pos = PT; |
b73ea88e | 5268 | pos_byte = PT_BYTE; |
7ab12479 | 5269 | bolp = Fbolp (); |
03ab8921 EZ |
5270 | SET_PT_BOTH (marker_position (opoint_marker), |
5271 | marker_byte_position (opoint_marker)); | |
7ab12479 JB |
5272 | |
5273 | if (lose) | |
f8026fd8 JB |
5274 | { |
5275 | if (noerror) | |
5276 | return; | |
5277 | else | |
ba96a5cf | 5278 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 5279 | } |
7ab12479 JB |
5280 | |
5281 | if (pos < ZV) | |
7ab12479 | 5282 | { |
0c7da84e | 5283 | /* Don't use a scroll margin that is negative or too large. */ |
71f02bc5 | 5284 | int this_scroll_margin = |
5f24fa51 | 5285 | max (0, min (scroll_margin, w->total_lines / 4)); |
0c7da84e | 5286 | |
e74aeda8 | 5287 | set_marker_restricted_both (w->start, w->contents, pos, pos_byte); |
c98ff5dd DA |
5288 | w->start_at_line_beg = !NILP (bolp); |
5289 | w->update_mode_line = 1; | |
345d45b2 RS |
5290 | /* Set force_start so that redisplay_window will run |
5291 | the window-scroll-functions. */ | |
c98ff5dd | 5292 | w->force_start = 1; |
0c7da84e | 5293 | |
bdf4ec93 RS |
5294 | if (!NILP (Vscroll_preserve_screen_position) |
5295 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 5296 | { |
b73ea88e | 5297 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5298 | Fvertical_motion (original_pos, window); |
0c7da84e | 5299 | } |
101d1605 RS |
5300 | /* If we scrolled forward, put point enough lines down |
5301 | that it is outside the scroll margin. */ | |
5302 | else if (n > 0) | |
0c7da84e | 5303 | { |
101d1605 RS |
5304 | int top_margin; |
5305 | ||
5306 | if (this_scroll_margin > 0) | |
5307 | { | |
b73ea88e | 5308 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
5309 | Fvertical_motion (make_number (this_scroll_margin), window); |
5310 | top_margin = PT; | |
5311 | } | |
5312 | else | |
5313 | top_margin = pos; | |
5314 | ||
03ab8921 EZ |
5315 | if (top_margin <= marker_position (opoint_marker)) |
5316 | SET_PT_BOTH (marker_position (opoint_marker), | |
5317 | marker_byte_position (opoint_marker)); | |
5500c422 | 5318 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 5319 | { |
b73ea88e | 5320 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5321 | Fvertical_motion (original_pos, window); |
101d1605 | 5322 | } |
9317a85d | 5323 | else |
335406fc | 5324 | SET_PT (top_margin); |
0c7da84e | 5325 | } |
101d1605 | 5326 | else if (n < 0) |
7ab12479 | 5327 | { |
101d1605 RS |
5328 | int bottom_margin; |
5329 | ||
0c7da84e RS |
5330 | /* If we scrolled backward, put point near the end of the window |
5331 | but not within the scroll margin. */ | |
b73ea88e | 5332 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 5333 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
5334 | if (XFASTINT (tem) == ht - this_scroll_margin) |
5335 | bottom_margin = PT; | |
5336 | else | |
5337 | bottom_margin = PT + 1; | |
5338 | ||
03ab8921 EZ |
5339 | if (bottom_margin > marker_position (opoint_marker)) |
5340 | SET_PT_BOTH (marker_position (opoint_marker), | |
5341 | marker_byte_position (opoint_marker)); | |
7ab12479 | 5342 | else |
101d1605 | 5343 | { |
5500c422 | 5344 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 5345 | { |
b73ea88e | 5346 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 5347 | Fvertical_motion (original_pos, window); |
9317a85d RS |
5348 | } |
5349 | else | |
5350 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 5351 | } |
7ab12479 JB |
5352 | } |
5353 | } | |
5354 | else | |
f8026fd8 JB |
5355 | { |
5356 | if (noerror) | |
5357 | return; | |
5358 | else | |
ba96a5cf | 5359 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 5360 | } |
7ab12479 | 5361 | } |
5500c422 GM |
5362 | |
5363 | ||
5364 | /* Scroll selected_window up or down. If N is nil, scroll a | |
5365 | screen-full which is defined as the height of the window minus | |
5366 | next_screen_context_lines. If N is the symbol `-', scroll. | |
5367 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
5368 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
5369 | |
5370 | static void | |
971de7fb | 5371 | scroll_command (Lisp_Object n, int direction) |
7ab12479 | 5372 | { |
2bfa3d3e | 5373 | dynwind_begin (); |
7ab12479 | 5374 | |
a54e2c05 | 5375 | eassert (eabs (direction) == 1); |
5500c422 GM |
5376 | |
5377 | /* If selected window's buffer isn't current, make it current for | |
5378 | the moment. But don't screw up if window_scroll gets an error. */ | |
e74aeda8 | 5379 | if (XBUFFER (XWINDOW (selected_window)->contents) != current_buffer) |
95605e15 JB |
5380 | { |
5381 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
e74aeda8 | 5382 | Fset_buffer (XWINDOW (selected_window)->contents); |
95605e15 | 5383 | } |
7ab12479 | 5384 | |
265a9e55 | 5385 | if (NILP (n)) |
d4e7cf01 | 5386 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 5387 | else if (EQ (n, Qminus)) |
d4e7cf01 | 5388 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
5389 | else |
5390 | { | |
5391 | n = Fprefix_numeric_value (n); | |
101d1605 | 5392 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 5393 | } |
95605e15 | 5394 | |
2bfa3d3e | 5395 | dynwind_end (); |
7ab12479 JB |
5396 | } |
5397 | ||
e0965597 | 5398 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
12bb3111 | 5399 | doc: /* Scroll text of selected window upward ARG lines. |
a0a37a6f | 5400 | If ARG is omitted or nil, scroll upward by a near full screen. |
fdb82f93 PJ |
5401 | A near full screen is `next-screen-context-lines' less than a full screen. |
5402 | Negative ARG means scroll downward. | |
5403 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5404 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 5405 | (Lisp_Object arg) |
7ab12479 | 5406 | { |
413430c5 | 5407 | scroll_command (arg, 1); |
7ab12479 JB |
5408 | return Qnil; |
5409 | } | |
5410 | ||
e0965597 | 5411 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
12bb3111 | 5412 | doc: /* Scroll text of selected window down ARG lines. |
a0a37a6f | 5413 | If ARG is omitted or nil, scroll down by a near full screen. |
fdb82f93 PJ |
5414 | A near full screen is `next-screen-context-lines' less than a full screen. |
5415 | Negative ARG means scroll upward. | |
5416 | If ARG is the atom `-', scroll upward by nearly full screen. | |
5417 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 5418 | (Lisp_Object arg) |
7ab12479 | 5419 | { |
413430c5 | 5420 | scroll_command (arg, -1); |
7ab12479 JB |
5421 | return Qnil; |
5422 | } | |
ccd0664b RS |
5423 | \f |
5424 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 5425 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 5426 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
5427 | showing that buffer is used. |
5428 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5429 | specifies the window. This takes precedence over | |
5430 | `other-window-scroll-buffer'. */) | |
5842a27b | 5431 | (void) |
7ab12479 | 5432 | { |
ccd0664b | 5433 | Lisp_Object window; |
7ab12479 JB |
5434 | |
5435 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 5436 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 | 5437 | window = Vminibuf_scroll_window; |
2907acd4 MR |
5438 | /* If buffer is specified and live, scroll that buffer. */ |
5439 | else if (!NILP (Vother_window_scroll_buffer) | |
cac0a1d6 | 5440 | && BUFFERP (Vother_window_scroll_buffer) |
2907acd4 | 5441 | && BUFFER_LIVE_P (XBUFFER (Vother_window_scroll_buffer))) |
7ab12479 JB |
5442 | { |
5443 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 5444 | if (NILP (window)) |
87478b52 | 5445 | window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
5446 | } |
5447 | else | |
dbc4e1c1 JB |
5448 | { |
5449 | /* Nothing specified; look for a neighboring window on the same | |
5450 | frame. */ | |
5451 | window = Fnext_window (selected_window, Qnil, Qnil); | |
5452 | ||
5453 | if (EQ (window, selected_window)) | |
5454 | /* That didn't get us anywhere; look for a window on another | |
5455 | visible frame. */ | |
5456 | do | |
5457 | window = Fnext_window (window, Qnil, Qt); | |
5458 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
5459 | && ! EQ (window, selected_window)); | |
5460 | } | |
5461 | ||
b7826503 | 5462 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
5463 | |
5464 | if (EQ (window, selected_window)) | |
5465 | error ("There is no other window"); | |
5466 | ||
ccd0664b RS |
5467 | return window; |
5468 | } | |
5469 | ||
5470 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
5471 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
5472 | A near full screen is `next-screen-context-lines' less than a full screen. | |
5473 | The next window is the one below the current one; or the one at the top | |
5474 | if the current one is at the bottom. Negative ARG means scroll downward. | |
5475 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5476 | When calling from a program, supply as argument a number, nil, or `-'. | |
5477 | ||
fdb82f93 | 5478 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5479 | showing that buffer, popping the buffer up if necessary. |
5480 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5481 | specifies the window to scroll. This takes precedence over | |
5482 | `other-window-scroll-buffer'. */) | |
5842a27b | 5483 | (Lisp_Object arg) |
ccd0664b | 5484 | { |
d4e7cf01 GM |
5485 | Lisp_Object window; |
5486 | struct window *w; | |
2bfa3d3e | 5487 | dynwind_begin (); |
ccd0664b RS |
5488 | |
5489 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5490 | w = XWINDOW (window); |
7ab12479 JB |
5491 | |
5492 | /* Don't screw up if window_scroll gets an error. */ | |
5493 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5494 | ||
e74aeda8 | 5495 | Fset_buffer (w->contents); |
ffcd945e | 5496 | SET_PT_BOTH (marker_position (w->pointm), marker_byte_position (w->pointm)); |
7ab12479 | 5497 | |
413430c5 | 5498 | if (NILP (arg)) |
d4e7cf01 | 5499 | window_scroll (window, 1, 1, 1); |
413430c5 | 5500 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5501 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5502 | else |
5503 | { | |
413430c5 | 5504 | if (CONSP (arg)) |
7d7bbefd | 5505 | arg = XCAR (arg); |
b7826503 | 5506 | CHECK_NUMBER (arg); |
101d1605 | 5507 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5508 | } |
5509 | ||
d3d50620 | 5510 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
2bfa3d3e | 5511 | dynwind_end (); |
7ab12479 JB |
5512 | |
5513 | return Qnil; | |
5514 | } | |
5515 | \f | |
e0965597 | 5516 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 5517 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5518 | Default for ARG is window width minus 2. |
5519 | Value is the total amount of leftward horizontal scrolling in | |
5520 | effect after the change. | |
23fe745a | 5521 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5522 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5523 | will not scroll a window to a column less than the value returned |
dc297565 | 5524 | by this function. This happens in an interactive call. */) |
5842a27b | 5525 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 5526 | { |
c67fa410 | 5527 | struct window *w = XWINDOW (selected_window); |
aa754e6a | 5528 | EMACS_INT requested_arg = (NILP (arg) |
880e6158 | 5529 | ? window_body_width (w, 0) - 2 |
aa754e6a | 5530 | : XINT (Fprefix_numeric_value (arg))); |
24a212eb | 5531 | Lisp_Object result = set_window_hscroll (w, w->hscroll + requested_arg); |
c67fa410 | 5532 | |
dc297565 | 5533 | if (!NILP (set_minimum)) |
c67fa410 GM |
5534 | w->min_hscroll = w->hscroll; |
5535 | ||
5536 | return result; | |
7ab12479 JB |
5537 | } |
5538 | ||
e0965597 | 5539 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 5540 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5541 | Default for ARG is window width minus 2. |
5542 | Value is the total amount of leftward horizontal scrolling in | |
5543 | effect after the change. | |
23fe745a | 5544 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5545 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5546 | will not scroll a window to a column less than the value returned |
dc297565 | 5547 | by this function. This happens in an interactive call. */) |
5842a27b | 5548 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 5549 | { |
c67fa410 | 5550 | struct window *w = XWINDOW (selected_window); |
aa754e6a | 5551 | EMACS_INT requested_arg = (NILP (arg) |
880e6158 | 5552 | ? window_body_width (w, 0) - 2 |
aa754e6a | 5553 | : XINT (Fprefix_numeric_value (arg))); |
24a212eb | 5554 | Lisp_Object result = set_window_hscroll (w, w->hscroll - requested_arg); |
177c0ea7 | 5555 | |
dc297565 | 5556 | if (!NILP (set_minimum)) |
c67fa410 GM |
5557 | w->min_hscroll = w->hscroll; |
5558 | ||
5559 | return result; | |
7ab12479 JB |
5560 | } |
5561 | ||
fa832261 KS |
5562 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5563 | doc: /* Return the window which was selected when entering the minibuffer. | |
12bb3111 | 5564 | Returns nil, if selected window is not a minibuffer window. */) |
5842a27b | 5565 | (void) |
fa832261 KS |
5566 | { |
5567 | if (minibuf_level > 0 | |
5568 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5569 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5570 | return minibuf_selected_window; | |
5571 | ||
5572 | return Qnil; | |
5573 | } | |
5574 | ||
12c8b416 GM |
5575 | /* Value is the number of lines actually displayed in window W, |
5576 | as opposed to its height. */ | |
5577 | ||
5578 | static int | |
971de7fb | 5579 | displayed_window_lines (struct window *w) |
12c8b416 GM |
5580 | { |
5581 | struct it it; | |
5582 | struct text_pos start; | |
5583 | int height = window_box_height (w); | |
5584 | struct buffer *old_buffer; | |
5585 | int bottom_y; | |
57b3e30b | 5586 | void *itdata = NULL; |
12c8b416 | 5587 | |
e74aeda8 | 5588 | if (XBUFFER (w->contents) != current_buffer) |
12c8b416 GM |
5589 | { |
5590 | old_buffer = current_buffer; | |
e74aeda8 | 5591 | set_buffer_internal (XBUFFER (w->contents)); |
12c8b416 GM |
5592 | } |
5593 | else | |
5594 | old_buffer = NULL; | |
5595 | ||
521b203e GM |
5596 | /* In case W->start is out of the accessible range, do something |
5597 | reasonable. This happens in Info mode when Info-scroll-down | |
5598 | calls (recenter -1) while W->start is 1. */ | |
cf91889a | 5599 | CLIP_TEXT_POS_FROM_MARKER (start, w->start); |
521b203e | 5600 | |
57b3e30b | 5601 | itdata = bidi_shelve_cache (); |
12c8b416 GM |
5602 | start_display (&it, w, start); |
5603 | move_it_vertically (&it, height); | |
c8bc6f65 | 5604 | bottom_y = line_bottom_y (&it); |
35928349 | 5605 | bidi_unshelve_cache (itdata, 0); |
12c8b416 | 5606 | |
1de65f51 RS |
5607 | /* rms: On a non-window display, |
5608 | the value of it.vpos at the bottom of the screen | |
5609 | seems to be 1 larger than window_box_height (w). | |
5610 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5611 | when ZV is on the last screen line | |
5612 | moves to the previous screen line instead of the last one. */ | |
d3d50620 | 5613 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) |
1de65f51 RS |
5614 | height++; |
5615 | ||
12c8b416 GM |
5616 | /* Add in empty lines at the bottom of the window. */ |
5617 | if (bottom_y < height) | |
5618 | { | |
949cf20f | 5619 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5620 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5621 | } |
5622 | ||
c8bc6f65 GM |
5623 | if (old_buffer) |
5624 | set_buffer_internal (old_buffer); | |
5625 | ||
12c8b416 GM |
5626 | return it.vpos; |
5627 | } | |
5628 | ||
5629 | ||
a7ca3326 | 5630 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
666e158e | 5631 | doc: /* Center point in selected window and maybe redisplay frame. |
3b166f09 | 5632 | With a numeric prefix argument ARG, recenter putting point on screen line ARG |
12bb3111 | 5633 | relative to the selected window. If ARG is negative, it counts up from the |
fdb82f93 PJ |
5634 | bottom of the window. (ARG should be less than the height of the window.) |
5635 | ||
666e158e MB |
5636 | If ARG is omitted or nil, then recenter with point on the middle line of |
5637 | the selected window; if the variable `recenter-redisplay' is non-nil, | |
5638 | also erase the entire frame and redraw it (when `auto-resize-tool-bars' | |
5639 | is set to `grow-only', this resets the tool-bar's height to the minimum | |
5640 | height needed); if `recenter-redisplay' has the special value `tty', | |
53524d93 | 5641 | then only tty frames are redrawn. |
7d1d98ee | 5642 | |
fdb82f93 PJ |
5643 | Just C-u as prefix means put point in the center of the window |
5644 | and redisplay normally--don't erase and redraw the frame. */) | |
5842a27b | 5645 | (register Lisp_Object arg) |
7ab12479 | 5646 | { |
6df47b59 | 5647 | struct window *w = XWINDOW (selected_window); |
e74aeda8 | 5648 | struct buffer *buf = XBUFFER (w->contents); |
d7e6881a | 5649 | bool center_p = 0; |
d311d28c | 5650 | ptrdiff_t charpos, bytepos; |
71f02bc5 | 5651 | EMACS_INT iarg IF_LINT (= 0); |
f6b43440 | 5652 | int this_scroll_margin; |
7ab12479 | 5653 | |
3da983f8 SM |
5654 | if (buf != current_buffer) |
5655 | error ("`recenter'ing a window that does not display current-buffer."); | |
5656 | ||
0fa5d25b | 5657 | /* If redisplay is suppressed due to an error, try again. */ |
3da983f8 | 5658 | buf->display_error_modiff = 0; |
0fa5d25b | 5659 | |
413430c5 | 5660 | if (NILP (arg)) |
7ab12479 | 5661 | { |
666e158e MB |
5662 | if (!NILP (Vrecenter_redisplay) |
5663 | && (!EQ (Vrecenter_redisplay, Qtty) | |
5664 | || !NILP (Ftty_type (selected_frame)))) | |
5665 | { | |
ebfa62c0 | 5666 | ptrdiff_t i; |
f02d6d5c | 5667 | |
666e158e MB |
5668 | /* Invalidate pixel data calculated for all compositions. */ |
5669 | for (i = 0; i < n_compositions; i++) | |
5670 | composition_table[i]->font = NULL; | |
742516e0 | 5671 | #if defined (HAVE_WINDOW_SYSTEM) && ! defined (USE_GTK) && ! defined (HAVE_NS) |
666e158e | 5672 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
742516e0 | 5673 | #endif |
666e158e MB |
5674 | Fredraw_frame (WINDOW_FRAME (w)); |
5675 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
5676 | } | |
7d1d98ee | 5677 | |
6df47b59 | 5678 | center_p = 1; |
7ab12479 | 5679 | } |
3da983f8 | 5680 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5681 | center_p = 1; |
7ab12479 JB |
5682 | else |
5683 | { | |
413430c5 | 5684 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5685 | CHECK_NUMBER (arg); |
ae12ecd7 | 5686 | iarg = XINT (arg); |
7ab12479 JB |
5687 | } |
5688 | ||
f6b43440 RS |
5689 | /* Do this after making BUF current |
5690 | in case scroll_margin is buffer-local. */ | |
3da983f8 SM |
5691 | this_scroll_margin |
5692 | = max (0, min (scroll_margin, w->total_lines / 4)); | |
f6b43440 | 5693 | |
521b203e | 5694 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5695 | have variable-height lines and centering point on the basis of |
5696 | line counts would lead to strange effects. */ | |
d3d50620 | 5697 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5698 | { |
6df47b59 GM |
5699 | if (center_p) |
5700 | { | |
521b203e GM |
5701 | struct it it; |
5702 | struct text_pos pt; | |
57b3e30b | 5703 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5704 | |
521b203e GM |
5705 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5706 | start_display (&it, w, pt); | |
f204989e | 5707 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5708 | charpos = IT_CHARPOS (it); |
5709 | bytepos = IT_BYTEPOS (it); | |
35928349 | 5710 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5711 | } |
f6b43440 | 5712 | else if (iarg < 0) |
6df47b59 | 5713 | { |
521b203e GM |
5714 | struct it it; |
5715 | struct text_pos pt; | |
5895d7b9 | 5716 | ptrdiff_t nlines = min (PTRDIFF_MAX, -iarg); |
f204989e KS |
5717 | int extra_line_spacing; |
5718 | int h = window_box_height (w); | |
57b3e30b | 5719 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5720 | |
f6b43440 RS |
5721 | iarg = - max (-iarg, this_scroll_margin); |
5722 | ||
521b203e GM |
5723 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5724 | start_display (&it, w, pt); | |
f204989e KS |
5725 | |
5726 | /* Be sure we have the exact height of the full line containing PT. */ | |
e4cc2dfc | 5727 | move_it_by_lines (&it, 0); |
521b203e | 5728 | |
d466fa4d | 5729 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5730 | height minus what's displayed in the line containing PT, |
5731 | and the lines below. */ | |
f204989e KS |
5732 | it.current_y = 0; |
5733 | it.vpos = 0; | |
e4cc2dfc | 5734 | move_it_by_lines (&it, nlines); |
d466fa4d | 5735 | |
f204989e KS |
5736 | if (it.vpos == nlines) |
5737 | h -= it.current_y; | |
5738 | else | |
5739 | { | |
3da983f8 | 5740 | /* Last line has no newline. */ |
f204989e KS |
5741 | h -= line_bottom_y (&it); |
5742 | it.vpos++; | |
5743 | } | |
5744 | ||
5745 | /* Don't reserve space for extra line spacing of last line. */ | |
5746 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5747 | |
5748 | /* If we can't move down NLINES lines because we hit | |
5749 | the end of the buffer, count in some empty lines. */ | |
5750 | if (it.vpos < nlines) | |
f204989e KS |
5751 | { |
5752 | nlines -= it.vpos; | |
5753 | extra_line_spacing = it.extra_line_spacing; | |
5754 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5755 | } | |
5756 | if (h <= 0) | |
57b3e30b | 5757 | { |
35928349 | 5758 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
5759 | return Qnil; |
5760 | } | |
201c831a | 5761 | |
f204989e | 5762 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5763 | start_display (&it, w, pt); |
f204989e KS |
5764 | it.current_y = 0; |
5765 | move_it_vertically_backward (&it, h); | |
5766 | ||
5767 | /* If extra line spacing is present, we may move too far | |
5768 | back. This causes the last line to be only partially | |
5769 | visible (which triggers redisplay to recenter that line | |
5770 | in the middle), so move forward. | |
5771 | But ignore extra line spacing on last line, as it is not | |
5772 | considered to be part of the visible height of the line. | |
5773 | */ | |
5774 | h += extra_line_spacing; | |
5775 | while (-it.current_y > h) | |
e4cc2dfc | 5776 | move_it_by_lines (&it, 1); |
f204989e | 5777 | |
521b203e GM |
5778 | charpos = IT_CHARPOS (it); |
5779 | bytepos = IT_BYTEPOS (it); | |
57b3e30b | 5780 | |
35928349 | 5781 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5782 | } |
521b203e GM |
5783 | else |
5784 | { | |
5785 | struct position pos; | |
f6b43440 | 5786 | |
f6b43440 RS |
5787 | iarg = max (iarg, this_scroll_margin); |
5788 | ||
c54aa166 | 5789 | pos = *vmotion (PT, PT_BYTE, -iarg, w); |
521b203e GM |
5790 | charpos = pos.bufpos; |
5791 | bytepos = pos.bytepos; | |
5792 | } | |
5793 | } | |
5794 | else | |
5795 | { | |
5796 | struct position pos; | |
5797 | int ht = window_internal_height (w); | |
5798 | ||
5799 | if (center_p) | |
a4429c5b | 5800 | iarg = ht / 2; |
f567c488 KS |
5801 | else if (iarg < 0) |
5802 | iarg += ht; | |
f6b43440 RS |
5803 | |
5804 | /* Don't let it get into the margin at either top or bottom. */ | |
2dd61a9b DA |
5805 | iarg = clip_to_bounds (this_scroll_margin, iarg, |
5806 | ht - this_scroll_margin - 1); | |
177c0ea7 | 5807 | |
c54aa166 | 5808 | pos = *vmotion (PT, PT_BYTE, - iarg, w); |
6df47b59 GM |
5809 | charpos = pos.bufpos; |
5810 | bytepos = pos.bytepos; | |
5811 | } | |
5812 | ||
5813 | /* Set the new window start. */ | |
e74aeda8 | 5814 | set_marker_both (w->start, w->contents, charpos, bytepos); |
9d93ce29 | 5815 | w->window_end_valid = 0; |
177c0ea7 | 5816 | |
c98ff5dd | 5817 | w->optional_new_start = 1; |
95605b1b | 5818 | |
3da983f8 SM |
5819 | w->start_at_line_beg = (bytepos == BEGV_BYTE |
5820 | || FETCH_BYTE (bytepos - 1) == '\n'); | |
177c0ea7 | 5821 | |
7ab12479 JB |
5822 | return Qnil; |
5823 | } | |
b7617575 | 5824 | |
880e6158 | 5825 | DEFUN ("window-text-width", Fwindow_text_width, Swindow_text_width, |
fdb82f93 | 5826 | 0, 1, 0, |
880e6158 | 5827 | doc: /* Return the width in columns of the text display area of WINDOW. |
52162052 | 5828 | WINDOW must be a live window and defaults to the selected one. |
8fef9de1 | 5829 | |
880e6158 MR |
5830 | The returned width does not include dividers, scrollbars, margins, |
5831 | fringes, nor any partial-width columns at the right of the text | |
5832 | area. */) | |
5842a27b | 5833 | (Lisp_Object window) |
81fe0836 | 5834 | { |
52162052 | 5835 | struct window *w = decode_live_window (window); |
880e6158 MR |
5836 | |
5837 | return make_number (window_box_width (w, TEXT_AREA) | |
5838 | / FRAME_COLUMN_WIDTH (WINDOW_XFRAME (w))); | |
81fe0836 MB |
5839 | } |
5840 | ||
880e6158 MR |
5841 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
5842 | 0, 1, 0, | |
5843 | doc: /* Return the height in lines of the text display area of WINDOW. | |
5844 | WINDOW must be a live window and defaults to the selected one. | |
81fe0836 | 5845 | |
880e6158 MR |
5846 | The returned height does not include dividers, the mode line, any header |
5847 | line, nor any partial-height lines at the bottom of the text area. */) | |
5848 | (Lisp_Object window) | |
5849 | { | |
5850 | struct window *w = decode_live_window (window); | |
5851 | ||
5852 | return make_number (window_box_height (w) | |
5853 | / FRAME_LINE_HEIGHT (WINDOW_XFRAME (w))); | |
5854 | } | |
7ab12479 JB |
5855 | \f |
5856 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5857 | 1, 1, "P", |
5858 | doc: /* Position point relative to window. | |
87e68db4 JB |
5859 | ARG nil means position point at center of window. |
5860 | Else, ARG specifies vertical position within the window; | |
fdb82f93 | 5861 | zero means top of window, negative means relative to bottom of window. */) |
5842a27b | 5862 | (Lisp_Object arg) |
7ab12479 | 5863 | { |
b7617575 GM |
5864 | struct window *w = XWINDOW (selected_window); |
5865 | int lines, start; | |
540b6aa0 | 5866 | Lisp_Object window; |
f6b43440 RS |
5867 | #if 0 |
5868 | int this_scroll_margin; | |
5869 | #endif | |
7ab12479 | 5870 | |
e74aeda8 DA |
5871 | if (!(BUFFERP (w->contents) && XBUFFER (w->contents) == current_buffer)) |
5872 | /* This test is needed to make sure PT/PT_BYTE make sense in w->contents | |
794b75c7 SM |
5873 | when passed below to set_marker_both. */ |
5874 | error ("move-to-window-line called from unrelated buffer"); | |
6dc1d2d3 | 5875 | |
b7617575 | 5876 | window = selected_window; |
d3d50620 | 5877 | start = marker_position (w->start); |
7ab12479 JB |
5878 | if (start < BEGV || start > ZV) |
5879 | { | |
b7617575 | 5880 | int height = window_internal_height (w); |
cd2be1dd | 5881 | Fvertical_motion (make_number (- (height / 2)), window); |
e74aeda8 | 5882 | set_marker_both (w->start, w->contents, PT, PT_BYTE); |
c98ff5dd DA |
5883 | w->start_at_line_beg = !NILP (Fbolp ()); |
5884 | w->force_start = 1; | |
7ab12479 JB |
5885 | } |
5886 | else | |
d3d50620 | 5887 | Fgoto_char (w->start); |
7ab12479 | 5888 | |
b7617575 | 5889 | lines = displayed_window_lines (w); |
f6b43440 RS |
5890 | |
5891 | #if 0 | |
71f02bc5 | 5892 | this_scroll_margin = max (0, min (scroll_margin, lines / 4)); |
f6b43440 RS |
5893 | #endif |
5894 | ||
b7617575 GM |
5895 | if (NILP (arg)) |
5896 | XSETFASTINT (arg, lines / 2); | |
5897 | else | |
5898 | { | |
71f02bc5 | 5899 | EMACS_INT iarg = XINT (Fprefix_numeric_value (arg)); |
f6b43440 RS |
5900 | |
5901 | if (iarg < 0) | |
5902 | iarg = iarg + lines; | |
5903 | ||
5904 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5905 | to a place inside the scroll margins (which would cause the | |
5906 | next redisplay to scroll). I wrote this code, but then concluded | |
5907 | it is probably better not to install it. However, it is here | |
5908 | inside #if 0 so as not to lose it. -- rms. */ | |
5909 | ||
5910 | /* Don't let it get into the margin at either top or bottom. */ | |
5911 | iarg = max (iarg, this_scroll_margin); | |
5912 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5913 | #endif | |
5914 | ||
5915 | arg = make_number (iarg); | |
b7617575 GM |
5916 | } |
5917 | ||
c8bc6f65 | 5918 | /* Skip past a partially visible first line. */ |
163784df | 5919 | if (w->vscroll) |
163784df MB |
5920 | XSETINT (arg, XINT (arg) + 1); |
5921 | ||
540b6aa0 | 5922 | return Fvertical_motion (arg, window); |
7ab12479 | 5923 | } |
5500c422 GM |
5924 | |
5925 | ||
7ab12479 | 5926 | \f |
5500c422 GM |
5927 | /*********************************************************************** |
5928 | Window Configuration | |
5929 | ***********************************************************************/ | |
5930 | ||
7ab12479 JB |
5931 | struct save_window_data |
5932 | { | |
b102ceb1 | 5933 | struct vectorlike_header header; |
bdc727bf | 5934 | Lisp_Object selected_frame; |
7ab12479 JB |
5935 | Lisp_Object current_window; |
5936 | Lisp_Object current_buffer; | |
5937 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5938 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5939 | Lisp_Object root_window; |
bdc727bf | 5940 | Lisp_Object focus_frame; |
cbff28e8 RS |
5941 | /* A vector, each of whose elements is a struct saved_window |
5942 | for one window. */ | |
7ab12479 | 5943 | Lisp_Object saved_windows; |
b05b4e27 SM |
5944 | |
5945 | /* All fields above are traced by the GC. | |
6b729d16 | 5946 | From `frame-cols' down, the fields are ignored by the GC. */ |
880e6158 MR |
5947 | /* We should be able to do without the following two. */ |
5948 | int frame_cols, frame_lines; | |
f224e500 | 5949 | /* These two should get eventually replaced by their pixel |
880e6158 MR |
5950 | counterparts. */ |
5951 | int frame_menu_bar_lines, frame_tool_bar_lines; | |
5952 | int frame_text_width, frame_text_height; | |
f224e500 PE |
5953 | /* These are currently unused. We need them as soon as we convert |
5954 | to pixels. */ | |
880e6158 | 5955 | int frame_menu_bar_height, frame_tool_bar_height; |
7ab12479 | 5956 | }; |
ff06df24 | 5957 | |
4d89ee37 | 5958 | /* This is saved as a Lisp_Vector. */ |
7ab12479 | 5959 | struct saved_window |
ea68264b | 5960 | { |
b102ceb1 | 5961 | struct vectorlike_header header; |
496e208e | 5962 | |
4d89ee37 | 5963 | Lisp_Object window, buffer, start, pointm; |
880e6158 | 5964 | Lisp_Object pixel_left, pixel_top, pixel_height, pixel_width; |
949cf20f | 5965 | Lisp_Object left_col, top_line, total_cols, total_lines; |
496e208e | 5966 | Lisp_Object normal_cols, normal_lines; |
949cf20f | 5967 | Lisp_Object hscroll, min_hscroll; |
ea68264b GM |
5968 | Lisp_Object parent, prev; |
5969 | Lisp_Object start_at_line_beg; | |
5970 | Lisp_Object display_table; | |
949cf20f KS |
5971 | Lisp_Object left_margin_cols, right_margin_cols; |
5972 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
562dd5e9 | 5973 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type, dedicated; |
b6f67890 | 5974 | Lisp_Object combination_limit, window_parameters; |
ea68264b GM |
5975 | }; |
5976 | ||
7ab12479 | 5977 | #define SAVED_WINDOW_N(swv,n) \ |
91f2d272 | 5978 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) |
7ab12479 JB |
5979 | |
5980 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 | 5981 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5842a27b | 5982 | (Lisp_Object object) |
7ab12479 | 5983 | { |
6ad0381c | 5984 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
5985 | } |
5986 | ||
3f8ab7bd | 5987 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 | 5988 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5842a27b | 5989 | (Lisp_Object config) |
3f8ab7bd RS |
5990 | { |
5991 | register struct save_window_data *data; | |
5992 | struct Lisp_Vector *saved_windows; | |
5993 | ||
663fbbba | 5994 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
5995 | |
5996 | data = (struct save_window_data *) XVECTOR (config); | |
5997 | saved_windows = XVECTOR (data->saved_windows); | |
d3d50620 | 5998 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
3f8ab7bd RS |
5999 | } |
6000 | ||
a2b89a51 MR |
6001 | /* From Chong's unwind_create_frame_1. */ |
6002 | static void | |
6003 | unwind_change_frame (Lisp_Object val) | |
6004 | { | |
6005 | inhibit_lisp_code = val; | |
6006 | } | |
6007 | ||
a7ca3326 | 6008 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
6009 | Sset_window_configuration, 1, 1, 0, |
6010 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
6011 | CONFIGURATION must be a value previously returned | |
6012 | by `current-window-configuration' (which see). | |
6013 | If CONFIGURATION was made from a frame that is now deleted, | |
6014 | only frame-independent values can be restored. In this case, | |
6015 | the return value is nil. Otherwise the value is t. */) | |
5842a27b | 6016 | (Lisp_Object configuration) |
7ab12479 | 6017 | { |
7ab12479 JB |
6018 | register struct save_window_data *data; |
6019 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 6020 | Lisp_Object new_current_buffer; |
fd482be5 | 6021 | Lisp_Object frame; |
a10c8269 | 6022 | struct frame *f; |
d311d28c | 6023 | ptrdiff_t old_point = -1; |
7ab12479 | 6024 | |
663fbbba | 6025 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 6026 | |
2f83aebe | 6027 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
6028 | saved_windows = XVECTOR (data->saved_windows); |
6029 | ||
7ab12479 | 6030 | new_current_buffer = data->current_buffer; |
e578f381 | 6031 | if (!BUFFER_LIVE_P (XBUFFER (new_current_buffer))) |
7ab12479 | 6032 | new_current_buffer = Qnil; |
72695e47 | 6033 | else |
73cadfc1 DK |
6034 | { |
6035 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
6036 | /* The code further down "preserves point" by saving here PT in |
6037 | old_point and then setting it later back into PT. When the | |
6038 | current-selected-window and the final-selected-window both show | |
6039 | the current buffer, this suffers from the problem that the | |
6040 | current PT is the window-point of the current-selected-window, | |
6041 | while the final PT is the point of the final-selected-window, so | |
6042 | this copy from one PT to the other would end up moving the | |
6043 | window-point of the final-selected-window to the window-point of | |
6044 | the current-selected-window. So we have to be careful which | |
6045 | point of the current-buffer we copy into old_point. */ | |
e74aeda8 | 6046 | if (EQ (XWINDOW (data->current_window)->contents, new_current_buffer) |
e67a1dea | 6047 | && WINDOWP (selected_window) |
e74aeda8 | 6048 | && EQ (XWINDOW (selected_window)->contents, new_current_buffer) |
e67a1dea | 6049 | && !EQ (selected_window, data->current_window)) |
4c1acb95 | 6050 | old_point = marker_position (XWINDOW (data->current_window)->pointm); |
e67a1dea SM |
6051 | else |
6052 | old_point = PT; | |
73cadfc1 | 6053 | else |
203eb0aa SM |
6054 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
6055 | point in new_current_buffer as of the last time this buffer was | |
6056 | used. This can be non-deterministic since it can be changed by | |
6057 | things like jit-lock by mere temporary selection of some random | |
6058 | window that happens to show this buffer. | |
6059 | So if possible we want this arbitrary choice of "which point" to | |
6060 | be the one from the to-be-selected-window so as to prevent this | |
6061 | window's cursor from being copied from another window. */ | |
e74aeda8 | 6062 | if (EQ (XWINDOW (data->current_window)->contents, new_current_buffer) |
203eb0aa SM |
6063 | /* If current_window = selected_window, its point is in BUF_PT. */ |
6064 | && !EQ (selected_window, data->current_window)) | |
4c1acb95 | 6065 | old_point = marker_position (XWINDOW (data->current_window)->pointm); |
203eb0aa SM |
6066 | else |
6067 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 6068 | } |
7ab12479 | 6069 | |
d3d50620 | 6070 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
fd482be5 | 6071 | f = XFRAME (frame); |
177c0ea7 | 6072 | |
fd482be5 JB |
6073 | /* If f is a dead frame, don't bother rebuilding its window tree. |
6074 | However, there is other stuff we should still try to do below. */ | |
6075 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 6076 | { |
6198ccd0 MR |
6077 | Lisp_Object window; |
6078 | Lisp_Object dead_windows = Qnil; | |
6a6ee00d | 6079 | register Lisp_Object tem, par, pers; |
fd482be5 JB |
6080 | register struct window *w; |
6081 | register struct saved_window *p; | |
5500c422 GM |
6082 | struct window *root_window; |
6083 | struct window **leaf_windows; | |
6084 | int n_leaf_windows; | |
71f02bc5 PE |
6085 | ptrdiff_t k; |
6086 | int i, n; | |
a2b89a51 | 6087 | ptrdiff_t count = SPECPDL_INDEX (); |
fd482be5 JB |
6088 | /* If the frame has been resized since this window configuration was |
6089 | made, we change the frame to the size specified in the | |
6090 | configuration, restore the configuration, and then resize it | |
6091 | back. We keep track of the prevailing height in these variables. */ | |
880e6158 MR |
6092 | int previous_frame_text_height = FRAME_TEXT_HEIGHT (f); |
6093 | int previous_frame_text_width = FRAME_TEXT_WIDTH (f); | |
6ae87264 JB |
6094 | /* int previous_frame_menu_bar_height = FRAME_MENU_BAR_HEIGHT (f); */ |
6095 | /* int previous_frame_tool_bar_height = FRAME_TOOL_BAR_HEIGHT (f); */ | |
6096 | /* int previous_frame_lines = FRAME_LINES (f); */ | |
6097 | /* int previous_frame_cols = FRAME_COLS (f); */ | |
8f6ea2e9 | 6098 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 6099 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 6100 | |
37b9743e MR |
6101 | /* Don't do this within the main loop below: This may call Lisp |
6102 | code and is thus potentially unsafe while input is blocked. */ | |
6103 | for (k = 0; k < saved_windows->header.size; k++) | |
6104 | { | |
6105 | p = SAVED_WINDOW_N (saved_windows, k); | |
6106 | window = p->window; | |
6107 | w = XWINDOW (window); | |
e74aeda8 DA |
6108 | if (BUFFERP (w->contents) |
6109 | && !EQ (w->contents, p->buffer) | |
e578f381 | 6110 | && BUFFER_LIVE_P (XBUFFER (p->buffer))) |
37b9743e MR |
6111 | /* If a window we restore gets another buffer, record the |
6112 | window's old buffer. */ | |
6113 | call1 (Qrecord_window_buffer, window); | |
6114 | } | |
6115 | ||
a2b89a51 MR |
6116 | /* Don't run lisp in the following segment since the frame is in a |
6117 | completely inconsistent state. See Bug#16207. */ | |
6118 | record_unwind_protect (unwind_change_frame, inhibit_lisp_code); | |
6119 | inhibit_lisp_code = Qt; | |
d2b35234 RS |
6120 | /* The mouse highlighting code could get screwed up |
6121 | if it runs during this. */ | |
4d7e6e51 | 6122 | block_input (); |
d2b35234 | 6123 | |
880e6158 MR |
6124 | if (data->frame_text_width != previous_frame_text_width |
6125 | || data->frame_text_height != previous_frame_text_height) | |
6126 | change_frame_size (f, data->frame_text_width, | |
6127 | data->frame_text_height, 0, 0, 0, 1); | |
6128 | ||
6129 | if (data->frame_menu_bar_lines != previous_frame_menu_bar_lines) | |
b5e9cbb6 | 6130 | { |
6509f772 | 6131 | #ifdef HAVE_WINDOW_SYSTEM |
b5e9cbb6 EZ |
6132 | if (FRAME_WINDOW_P (f)) |
6133 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), | |
6134 | make_number (0)); | |
6135 | else /* TTY or MSDOS */ | |
6509f772 | 6136 | #endif |
b5e9cbb6 EZ |
6137 | set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
6138 | make_number (0)); | |
6139 | } | |
4314246f | 6140 | #ifdef HAVE_WINDOW_SYSTEM |
880e6158 | 6141 | if (data->frame_tool_bar_lines != previous_frame_tool_bar_lines) |
b05b4e27 SM |
6142 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
6143 | make_number (0)); | |
217f2871 | 6144 | #endif |
fd482be5 | 6145 | |
a46c0153 RS |
6146 | /* "Swap out" point from the selected window's buffer |
6147 | into the window itself. (Normally the pointm of the selected | |
6148 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
6149 | restoring the window contents, and prevent it from |
6150 | being done later on when we select a new window. */ | |
e74aeda8 | 6151 | if (! NILP (XWINDOW (selected_window)->contents)) |
596ae0cf RS |
6152 | { |
6153 | w = XWINDOW (selected_window); | |
d3d50620 | 6154 | set_marker_both (w->pointm, |
e74aeda8 DA |
6155 | w->contents, |
6156 | BUF_PT (XBUFFER (w->contents)), | |
6157 | BUF_PT_BYTE (XBUFFER (w->contents))); | |
596ae0cf RS |
6158 | } |
6159 | ||
5961ad6c | 6160 | fset_redisplay (f); |
29aeee73 | 6161 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 6162 | |
5500c422 | 6163 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 6164 | is a serious redisplay flickering problem. What we would |
5500c422 | 6165 | really like to do is to free only those matrices not reused |
9d14503e | 6166 | below. */ |
5500c422 | 6167 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); |
38182d90 PE |
6168 | leaf_windows = alloca (count_windows (root_window) |
6169 | * sizeof *leaf_windows); | |
5500c422 GM |
6170 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); |
6171 | ||
fd482be5 JB |
6172 | /* Kludge Alert! |
6173 | Mark all windows now on frame as "deleted". | |
6174 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 6175 | |
fd482be5 JB |
6176 | Save their current buffers in their height fields, since we may |
6177 | need it later, if a buffer saved in the configuration is now | |
6178 | dead. */ | |
be7f5545 | 6179 | delete_all_child_windows (FRAME_ROOT_WINDOW (f)); |
fd482be5 | 6180 | |
eab3844f | 6181 | for (k = 0; k < saved_windows->header.size; k++) |
fd482be5 JB |
6182 | { |
6183 | p = SAVED_WINDOW_N (saved_windows, k); | |
6198ccd0 MR |
6184 | window = p->window; |
6185 | w = XWINDOW (window); | |
e8c17b81 | 6186 | wset_next (w, Qnil); |
7ab12479 | 6187 | |
fd482be5 | 6188 | if (!NILP (p->parent)) |
e8c17b81 PE |
6189 | wset_parent |
6190 | (w, SAVED_WINDOW_N (saved_windows, XFASTINT (p->parent))->window); | |
fd482be5 | 6191 | else |
e8c17b81 | 6192 | wset_parent (w, Qnil); |
7ab12479 | 6193 | |
fd482be5 | 6194 | if (!NILP (p->prev)) |
7ab12479 | 6195 | { |
e8c17b81 PE |
6196 | wset_prev |
6197 | (w, SAVED_WINDOW_N (saved_windows, XFASTINT (p->prev))->window); | |
6198 | wset_next (XWINDOW (w->prev), p->window); | |
fd482be5 JB |
6199 | } |
6200 | else | |
6201 | { | |
e8c17b81 | 6202 | wset_prev (w, Qnil); |
d3d50620 | 6203 | if (!NILP (w->parent)) |
e74aeda8 DA |
6204 | wset_combination (XWINDOW (w->parent), |
6205 | (XINT (p->total_cols) | |
6206 | != XWINDOW (w->parent)->total_cols), | |
6207 | p->window); | |
fd482be5 JB |
6208 | } |
6209 | ||
095d384d DA |
6210 | /* If we squirreled away the buffer, restore it now. */ |
6211 | if (BUFFERP (w->combination_limit)) | |
6212 | wset_buffer (w, w->combination_limit); | |
880e6158 MR |
6213 | w->pixel_left = XFASTINT (p->pixel_left); |
6214 | w->pixel_top = XFASTINT (p->pixel_top); | |
6215 | w->pixel_width = XFASTINT (p->pixel_width); | |
6216 | w->pixel_height = XFASTINT (p->pixel_height); | |
5f24fa51 DA |
6217 | w->left_col = XFASTINT (p->left_col); |
6218 | w->top_line = XFASTINT (p->top_line); | |
6219 | w->total_cols = XFASTINT (p->total_cols); | |
6220 | w->total_lines = XFASTINT (p->total_lines); | |
e8c17b81 PE |
6221 | wset_normal_cols (w, p->normal_cols); |
6222 | wset_normal_lines (w, p->normal_lines); | |
80b00b08 DA |
6223 | w->hscroll = XFASTINT (p->hscroll); |
6224 | w->min_hscroll = XFASTINT (p->min_hscroll); | |
e8c17b81 | 6225 | wset_display_table (w, p->display_table); |
eeaf9bf3 DA |
6226 | w->left_margin_cols = XINT (p->left_margin_cols); |
6227 | w->right_margin_cols = XINT (p->right_margin_cols); | |
9e37ee3b DA |
6228 | w->left_fringe_width = XINT (p->left_fringe_width); |
6229 | w->right_fringe_width = XINT (p->right_fringe_width); | |
2af3565e | 6230 | w->fringes_outside_margins = !NILP (p->fringes_outside_margins); |
38a2c910 | 6231 | w->scroll_bar_width = XINT (p->scroll_bar_width); |
e8c17b81 PE |
6232 | wset_vertical_scroll_bar_type (w, p->vertical_scroll_bar_type); |
6233 | wset_dedicated (w, p->dedicated); | |
6234 | wset_combination_limit (w, p->combination_limit); | |
6a6ee00d MR |
6235 | /* Restore any window parameters that have been saved. |
6236 | Parameters that have not been saved are left alone. */ | |
6237 | for (tem = p->window_parameters; CONSP (tem); tem = XCDR (tem)) | |
6238 | { | |
6239 | pers = XCAR (tem); | |
6240 | if (CONSP (pers)) | |
6241 | { | |
6242 | if (NILP (XCDR (pers))) | |
6243 | { | |
d3d50620 | 6244 | par = Fassq (XCAR (pers), w->window_parameters); |
6a6ee00d MR |
6245 | if (CONSP (par) && !NILP (XCDR (par))) |
6246 | /* Reset a parameter to nil if and only if it | |
6247 | has a non-nil association. Don't make new | |
6248 | associations. */ | |
6249 | Fsetcdr (par, Qnil); | |
6250 | } | |
6251 | else | |
6252 | /* Always restore a non-nil value. */ | |
6253 | Fset_window_parameter (window, XCAR (pers), XCDR (pers)); | |
6254 | } | |
6255 | } | |
6256 | ||
e74aeda8 | 6257 | if (BUFFERP (p->buffer) && BUFFER_LIVE_P (XBUFFER (p->buffer))) |
6198ccd0 MR |
6258 | /* If saved buffer is alive, install it. */ |
6259 | { | |
e8c17b81 PE |
6260 | wset_buffer (w, p->buffer); |
6261 | w->start_at_line_beg = !NILP (p->start_at_line_beg); | |
e74aeda8 | 6262 | set_marker_restricted (w->start, p->start, w->contents); |
e8c17b81 | 6263 | set_marker_restricted (w->pointm, p->pointm, |
e74aeda8 | 6264 | w->contents); |
e8c17b81 PE |
6265 | |
6266 | /* As documented in Fcurrent_window_configuration, don't | |
6267 | restore the location of point in the buffer which was | |
6268 | current when the window configuration was recorded. */ | |
6269 | if (!EQ (p->buffer, new_current_buffer) | |
6270 | && XBUFFER (p->buffer) == current_buffer) | |
6271 | Fgoto_char (w->pointm); | |
077288cf | 6272 | } |
e74aeda8 DA |
6273 | else if (BUFFERP (w->contents) && BUFFER_LIVE_P (XBUFFER (w->contents))) |
6274 | /* Keep window's old buffer; make sure the markers are real. */ | |
6275 | { | |
6276 | /* Set window markers at start of visible range. */ | |
6277 | if (XMARKER (w->start)->buffer == 0) | |
6278 | set_marker_restricted_both (w->start, w->contents, 0, 0); | |
6279 | if (XMARKER (w->pointm)->buffer == 0) | |
6280 | set_marker_restricted_both | |
6281 | (w->pointm, w->contents, | |
6282 | BUF_PT (XBUFFER (w->contents)), | |
6283 | BUF_PT_BYTE (XBUFFER (w->contents))); | |
6284 | w->start_at_line_beg = 1; | |
6285 | } | |
6286 | else if (!NILP (w->start)) | |
6287 | /* Leaf window has no live buffer, get one. */ | |
fd482be5 | 6288 | { |
6198ccd0 MR |
6289 | /* Get the buffer via other_buffer_safely in order to |
6290 | avoid showing an unimportant buffer and, if necessary, to | |
6291 | recreate *scratch* in the course (part of Juanma's bs-show | |
6292 | scenario from March 2011). */ | |
e8c17b81 | 6293 | wset_buffer (w, other_buffer_safely (Fcurrent_buffer ())); |
6198ccd0 MR |
6294 | /* This will set the markers to beginning of visible |
6295 | range. */ | |
e74aeda8 DA |
6296 | set_marker_restricted_both (w->start, w->contents, 0, 0); |
6297 | set_marker_restricted_both (w->pointm, w->contents, 0, 0); | |
c98ff5dd | 6298 | w->start_at_line_beg = 1; |
d3d50620 | 6299 | if (!NILP (w->dedicated)) |
6198ccd0 MR |
6300 | /* Record this window as dead. */ |
6301 | dead_windows = Fcons (window, dead_windows); | |
6302 | /* Make sure window is no more dedicated. */ | |
e8c17b81 | 6303 | wset_dedicated (w, Qnil); |
7ab12479 JB |
6304 | } |
6305 | } | |
9ace597f | 6306 | |
f00af5b1 | 6307 | fset_root_window (f, data->root_window); |
a46c0153 RS |
6308 | /* Arrange *not* to restore point in the buffer that was |
6309 | current when the window configuration was saved. */ | |
e74aeda8 | 6310 | if (EQ (XWINDOW (data->current_window)->contents, new_current_buffer)) |
d3d50620 | 6311 | set_marker_restricted (XWINDOW (data->current_window)->pointm, |
18787f5e | 6312 | make_number (old_point), |
e74aeda8 | 6313 | XWINDOW (data->current_window)->contents); |
177c0ea7 | 6314 | |
a2b89a51 MR |
6315 | /* In the following call to `select-window', prevent "swapping out |
6316 | point" in the old selected window using the buffer that has | |
6317 | been restored into it. We already swapped out that point from | |
6318 | that window's old buffer. | |
6319 | ||
6320 | Do not record the buffer here. We do that in a separate call | |
6321 | to select_window below. See also Bug#16207. */ | |
6322 | select_window (data->current_window, Qt, 1); | |
6323 | BVAR (XBUFFER (XWINDOW (selected_window)->contents), | |
6324 | last_selected_window) | |
6325 | = selected_window; | |
6326 | ||
db269683 | 6327 | if (NILP (data->focus_frame) |
017b2bad | 6328 | || (FRAMEP (data->focus_frame) |
db269683 JB |
6329 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
6330 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 6331 | |
880e6158 MR |
6332 | /* Set the frame size to the value it had before this function. */ |
6333 | if (previous_frame_text_width != FRAME_TEXT_WIDTH (f) | |
6334 | || previous_frame_text_height != FRAME_TEXT_HEIGHT (f)) | |
6335 | change_frame_size (f, previous_frame_text_width, | |
6336 | previous_frame_text_height, 0, 0, 0, 1); | |
6337 | ||
8f6ea2e9 | 6338 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
b5e9cbb6 | 6339 | { |
6509f772 | 6340 | #ifdef HAVE_WINDOW_SYSTEM |
b5e9cbb6 EZ |
6341 | if (FRAME_WINDOW_P (f)) |
6342 | x_set_menu_bar_lines (f, | |
6343 | make_number (previous_frame_menu_bar_lines), | |
6344 | make_number (0)); | |
6345 | else /* TTY or MSDOS */ | |
6509f772 | 6346 | #endif |
b5e9cbb6 EZ |
6347 | set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
6348 | make_number (0)); | |
6349 | } | |
4314246f | 6350 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
6351 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
6352 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
6353 | make_number (0)); | |
217f2871 | 6354 | #endif |
d2b35234 | 6355 | |
5500c422 | 6356 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
6357 | for (i = n = 0; i < n_leaf_windows; ++i) |
6358 | { | |
e74aeda8 DA |
6359 | if (NILP (leaf_windows[i]->contents)) |
6360 | free_window_matrices (leaf_windows[i]); | |
6361 | else if (EQ (leaf_windows[i]->contents, new_current_buffer)) | |
c4280705 GM |
6362 | ++n; |
6363 | } | |
177c0ea7 | 6364 | |
bd0443bb | 6365 | adjust_frame_glyphs (f); |
4d7e6e51 | 6366 | unblock_input (); |
a2b89a51 | 6367 | unbind_to (count, Qnil); |
756b6edc | 6368 | |
6198ccd0 MR |
6369 | /* Scan dead buffer windows. */ |
6370 | for (; CONSP (dead_windows); dead_windows = XCDR (dead_windows)) | |
6371 | { | |
6372 | window = XCAR (dead_windows); | |
6373 | if (WINDOW_LIVE_P (window) && !EQ (window, FRAME_ROOT_WINDOW (f))) | |
6374 | delete_deletable_window (window); | |
6375 | } | |
6376 | ||
a2b89a51 MR |
6377 | /* Record the selected window's buffer here. The window should |
6378 | already be the selected one from the call above. */ | |
6379 | select_window (data->current_window, Qnil, 0); | |
ef869611 | 6380 | |
478292ed RS |
6381 | /* Fselect_window will have made f the selected frame, so we |
6382 | reselect the proper frame here. Fhandle_switch_frame will change the | |
6383 | selected window too, but that doesn't make the call to | |
6384 | Fselect_window above totally superfluous; it still sets f's | |
6385 | selected window. */ | |
6386 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
c6932ecd | 6387 | do_switch_frame (data->selected_frame, 0, 0, Qnil); |
478292ed | 6388 | |
eeca6f6f | 6389 | run_window_configuration_change_hook (f); |
478292ed | 6390 | } |
bdc727bf JB |
6391 | |
6392 | if (!NILP (new_current_buffer)) | |
c4b6914d MR |
6393 | { |
6394 | Fset_buffer (new_current_buffer); | |
6395 | /* If the new current buffer doesn't appear in the selected | |
6396 | window, go to its old point (see bug#12208). */ | |
e74aeda8 | 6397 | if (!EQ (XWINDOW (data->current_window)->contents, new_current_buffer)) |
c4b6914d MR |
6398 | Fgoto_char (make_number (old_point)); |
6399 | } | |
bdc727bf | 6400 | |
478292ed | 6401 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 6402 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 6403 | |
3f8ab7bd | 6404 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
6405 | } |
6406 | ||
27e498e6 PE |
6407 | void |
6408 | restore_window_configuration (Lisp_Object configuration) | |
6409 | { | |
6410 | Fset_window_configuration (configuration); | |
6411 | } | |
6412 | ||
562dd5e9 | 6413 | |
e74aeda8 DA |
6414 | /* If WINDOW is an internal window, recursively delete all child windows |
6415 | reachable via the next and contents slots of WINDOW. Otherwise setup | |
6416 | WINDOW to not show any buffer. */ | |
6417 | ||
fd482be5 | 6418 | void |
be7f5545 | 6419 | delete_all_child_windows (Lisp_Object window) |
7ab12479 | 6420 | { |
fa8a67e6 MR |
6421 | register struct window *w; |
6422 | ||
6423 | w = XWINDOW (window); | |
6424 | ||
d3d50620 | 6425 | if (!NILP (w->next)) |
fa8a67e6 | 6426 | /* Delete WINDOW's siblings (we traverse postorderly). */ |
d3d50620 | 6427 | delete_all_child_windows (w->next); |
605be8af | 6428 | |
e74aeda8 | 6429 | if (WINDOWP (w->contents)) |
fa8a67e6 | 6430 | { |
e74aeda8 DA |
6431 | delete_all_child_windows (w->contents); |
6432 | wset_combination (w, 0, Qnil); | |
fa8a67e6 | 6433 | } |
e74aeda8 | 6434 | else if (BUFFERP (w->contents)) |
fa8a67e6 MR |
6435 | { |
6436 | unshow_buffer (w); | |
d3d50620 DA |
6437 | unchain_marker (XMARKER (w->pointm)); |
6438 | unchain_marker (XMARKER (w->start)); | |
095d384d DA |
6439 | /* Since combination limit makes sense for an internal windows |
6440 | only, we use this slot to save the buffer for the sake of | |
6441 | possible resurrection in Fset_window_configuration. */ | |
e74aeda8 | 6442 | wset_combination_limit (w, w->contents); |
e8c17b81 | 6443 | wset_buffer (w, Qnil); |
fa8a67e6 | 6444 | } |
acf70840 GM |
6445 | |
6446 | Vwindow_list = Qnil; | |
7ab12479 JB |
6447 | } |
6448 | \f | |
6449 | static int | |
971de7fb | 6450 | count_windows (register struct window *window) |
7ab12479 JB |
6451 | { |
6452 | register int count = 1; | |
d3d50620 DA |
6453 | if (!NILP (window->next)) |
6454 | count += count_windows (XWINDOW (window->next)); | |
e74aeda8 DA |
6455 | if (WINDOWP (window->contents)) |
6456 | count += count_windows (XWINDOW (window->contents)); | |
7ab12479 JB |
6457 | return count; |
6458 | } | |
6459 | ||
5500c422 | 6460 | |
177c0ea7 | 6461 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 | 6462 | Value is last index + 1. */ |
5500c422 | 6463 | static int |
971de7fb | 6464 | get_leaf_windows (struct window *w, struct window **flat, int i) |
5500c422 GM |
6465 | { |
6466 | while (w) | |
6467 | { | |
e74aeda8 DA |
6468 | if (WINDOWP (w->contents)) |
6469 | i = get_leaf_windows (XWINDOW (w->contents), flat, i); | |
177c0ea7 | 6470 | else |
5500c422 GM |
6471 | flat[i++] = w; |
6472 | ||
d3d50620 | 6473 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
5500c422 GM |
6474 | } |
6475 | ||
6476 | return i; | |
6477 | } | |
6478 | ||
6479 | ||
6480 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
c80e3b4a | 6481 | null if W's current matrix is invalid, so that no meaningful glyph |
5500c422 | 6482 | can be returned. */ |
5500c422 | 6483 | struct glyph * |
971de7fb | 6484 | get_phys_cursor_glyph (struct window *w) |
5500c422 GM |
6485 | { |
6486 | struct glyph_row *row; | |
6487 | struct glyph *glyph; | |
f8fe6f96 | 6488 | int hpos = w->phys_cursor.hpos; |
5500c422 | 6489 | |
f8fe6f96 EZ |
6490 | if (!(w->phys_cursor.vpos >= 0 |
6491 | && w->phys_cursor.vpos < w->current_matrix->nrows)) | |
6492 | return NULL; | |
6493 | ||
6494 | row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos); | |
6495 | if (!row->enabled_p) | |
6496 | return NULL; | |
6497 | ||
80b00b08 | 6498 | if (w->hscroll) |
f8fe6f96 EZ |
6499 | { |
6500 | /* When the window is hscrolled, cursor hpos can legitimately be | |
6501 | out of bounds, but we draw the cursor at the corresponding | |
6502 | window margin in that case. */ | |
6503 | if (!row->reversed_p && hpos < 0) | |
6504 | hpos = 0; | |
6505 | if (row->reversed_p && hpos >= row->used[TEXT_AREA]) | |
6506 | hpos = row->used[TEXT_AREA] - 1; | |
6507 | } | |
5500c422 | 6508 | |
7216e43b | 6509 | if (0 <= hpos && hpos < row->used[TEXT_AREA]) |
f8fe6f96 | 6510 | glyph = row->glyphs[TEXT_AREA] + hpos; |
5500c422 GM |
6511 | else |
6512 | glyph = NULL; | |
6513 | ||
6514 | return glyph; | |
6515 | } | |
6516 | ||
6517 | ||
7ab12479 | 6518 | static int |
971de7fb | 6519 | save_window_save (Lisp_Object window, struct Lisp_Vector *vector, int i) |
7ab12479 JB |
6520 | { |
6521 | register struct saved_window *p; | |
6522 | register struct window *w; | |
6a6ee00d | 6523 | register Lisp_Object tem, pers, par; |
7ab12479 | 6524 | |
e74aeda8 | 6525 | for (; !NILP (window); window = w->next) |
7ab12479 JB |
6526 | { |
6527 | p = SAVED_WINDOW_N (vector, i); | |
6528 | w = XWINDOW (window); | |
6529 | ||
e8c17b81 | 6530 | wset_temslot (w, make_number (i)); i++; |
7ab12479 | 6531 | p->window = window; |
e74aeda8 | 6532 | p->buffer = (WINDOW_LEAF_P (w) ? w->contents : Qnil); |
880e6158 MR |
6533 | p->pixel_left = make_number (w->pixel_left); |
6534 | p->pixel_top = make_number (w->pixel_top); | |
6535 | p->pixel_width = make_number (w->pixel_width); | |
6536 | p->pixel_height = make_number (w->pixel_height); | |
5f24fa51 DA |
6537 | p->left_col = make_number (w->left_col); |
6538 | p->top_line = make_number (w->top_line); | |
6539 | p->total_cols = make_number (w->total_cols); | |
6540 | p->total_lines = make_number (w->total_lines); | |
d3d50620 DA |
6541 | p->normal_cols = w->normal_cols; |
6542 | p->normal_lines = w->normal_lines; | |
80b00b08 DA |
6543 | XSETFASTINT (p->hscroll, w->hscroll); |
6544 | XSETFASTINT (p->min_hscroll, w->min_hscroll); | |
d3d50620 | 6545 | p->display_table = w->display_table; |
eeaf9bf3 DA |
6546 | p->left_margin_cols = make_number (w->left_margin_cols); |
6547 | p->right_margin_cols = make_number (w->right_margin_cols); | |
9e37ee3b DA |
6548 | p->left_fringe_width = make_number (w->left_fringe_width); |
6549 | p->right_fringe_width = make_number (w->right_fringe_width); | |
2af3565e | 6550 | p->fringes_outside_margins = w->fringes_outside_margins ? Qt : Qnil; |
38a2c910 | 6551 | p->scroll_bar_width = make_number (w->scroll_bar_width); |
d3d50620 DA |
6552 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; |
6553 | p->dedicated = w->dedicated; | |
6554 | p->combination_limit = w->combination_limit; | |
6a6ee00d MR |
6555 | p->window_parameters = Qnil; |
6556 | ||
6557 | if (!NILP (Vwindow_persistent_parameters)) | |
6558 | { | |
6559 | /* Run cycle detection on Vwindow_persistent_parameters. */ | |
6560 | Lisp_Object tortoise, hare; | |
6561 | ||
6562 | hare = tortoise = Vwindow_persistent_parameters; | |
6563 | while (CONSP (hare)) | |
6564 | { | |
6565 | hare = XCDR (hare); | |
6566 | if (!CONSP (hare)) | |
6567 | break; | |
6568 | ||
6569 | hare = XCDR (hare); | |
6570 | tortoise = XCDR (tortoise); | |
6571 | ||
6572 | if (EQ (hare, tortoise)) | |
6573 | /* Reset Vwindow_persistent_parameters to Qnil. */ | |
6574 | { | |
6575 | Vwindow_persistent_parameters = Qnil; | |
6576 | break; | |
6577 | } | |
6578 | } | |
6579 | ||
6580 | for (tem = Vwindow_persistent_parameters; CONSP (tem); | |
6581 | tem = XCDR (tem)) | |
6582 | { | |
6583 | pers = XCAR (tem); | |
34a02f46 MR |
6584 | /* Save values for persistent window parameters. */ |
6585 | if (CONSP (pers) && !NILP (XCDR (pers))) | |
6a6ee00d | 6586 | { |
d3d50620 | 6587 | par = Fassq (XCAR (pers), w->window_parameters); |
6a6ee00d MR |
6588 | if (NILP (par)) |
6589 | /* If the window has no value for the parameter, | |
6590 | make one. */ | |
6591 | p->window_parameters = Fcons (Fcons (XCAR (pers), Qnil), | |
6592 | p->window_parameters); | |
6593 | else | |
6594 | /* If the window has a value for the parameter, | |
6595 | save it. */ | |
6596 | p->window_parameters = Fcons (Fcons (XCAR (par), | |
6597 | XCDR (par)), | |
6598 | p->window_parameters); | |
6599 | } | |
6600 | } | |
6601 | } | |
6602 | ||
e74aeda8 | 6603 | if (BUFFERP (w->contents)) |
7ab12479 | 6604 | { |
6a6ee00d MR |
6605 | /* Save w's value of point in the window configuration. If w |
6606 | is the selected window, then get the value of point from | |
6607 | the buffer; pointm is garbage in the selected window. */ | |
7ab12479 | 6608 | if (EQ (window, selected_window)) |
e74aeda8 DA |
6609 | p->pointm = build_marker (XBUFFER (w->contents), |
6610 | BUF_PT (XBUFFER (w->contents)), | |
6611 | BUF_PT_BYTE (XBUFFER (w->contents))); | |
7ab12479 | 6612 | else |
d3d50620 | 6613 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
de8c03dc | 6614 | XMARKER (p->pointm)->insertion_type |
8917710e | 6615 | = !NILP (buffer_local_value /* Don't signal error if void. */ |
63032a0e | 6616 | (Qwindow_point_insertion_type, w->contents)); |
7ab12479 | 6617 | |
d3d50620 | 6618 | p->start = Fcopy_marker (w->start, Qnil); |
c98ff5dd | 6619 | p->start_at_line_beg = w->start_at_line_beg ? Qt : Qnil; |
7ab12479 JB |
6620 | } |
6621 | else | |
6622 | { | |
6623 | p->pointm = Qnil; | |
6624 | p->start = Qnil; | |
7ab12479 JB |
6625 | p->start_at_line_beg = Qnil; |
6626 | } | |
6627 | ||
4d89ee37 SM |
6628 | p->parent = NILP (w->parent) ? Qnil : XWINDOW (w->parent)->temslot; |
6629 | p->prev = NILP (w->prev) ? Qnil : XWINDOW (w->prev)->temslot; | |
7ab12479 | 6630 | |
e74aeda8 DA |
6631 | if (WINDOWP (w->contents)) |
6632 | i = save_window_save (w->contents, vector, i); | |
7ab12479 JB |
6633 | } |
6634 | ||
6635 | return i; | |
6636 | } | |
6637 | ||
a7ca3326 | 6638 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6639 | Scurrent_window_configuration, 0, 1, 0, |
6640 | doc: /* Return an object representing the current window configuration of FRAME. | |
6641 | If FRAME is nil or omitted, use the selected frame. | |
6642 | This describes the number of windows, their sizes and current buffers, | |
4d89ee37 SM |
6643 | and for each displayed buffer, where display starts, and the position of |
6644 | point. An exception is made for point in the current buffer: | |
fdb82f93 PJ |
6645 | its value is -not- saved. |
6646 | This also records the currently selected frame, and FRAME's focus | |
34a02f46 MR |
6647 | redirection (see `redirect-frame-focus'). The variable |
6648 | `window-persistent-parameters' specifies which window parameters are | |
6649 | saved by this function. */) | |
5842a27b | 6650 | (Lisp_Object frame) |
7ab12479 JB |
6651 | { |
6652 | register Lisp_Object tem; | |
6653 | register int n_windows; | |
6654 | register struct save_window_data *data; | |
6655 | register int i; | |
d9f07150 | 6656 | struct frame *f = decode_live_frame (frame); |
7ab12479 | 6657 | |
44fa5b1e | 6658 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
6659 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
6660 | PVEC_WINDOW_CONFIGURATION); | |
6661 | ||
6662 | data->frame_cols = FRAME_COLS (f); | |
6663 | data->frame_lines = FRAME_LINES (f); | |
6664 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
6665 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
880e6158 MR |
6666 | data->frame_text_width = FRAME_TEXT_WIDTH (f); |
6667 | data->frame_text_height = FRAME_TEXT_HEIGHT (f); | |
6668 | data->frame_menu_bar_height = FRAME_MENU_BAR_HEIGHT (f); | |
6669 | data->frame_tool_bar_height = FRAME_TOOL_BAR_HEIGHT (f); | |
1ae1a37d | 6670 | data->selected_frame = selected_frame; |
44fa5b1e | 6671 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6672 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6673 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6674 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6675 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6676 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
25721f5b | 6677 | tem = make_uninit_vector (n_windows); |
7ab12479 JB |
6678 | data->saved_windows = tem; |
6679 | for (i = 0; i < n_windows; i++) | |
28be1ada | 6680 | ASET (tem, i, |
25721f5b | 6681 | Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil)); |
a1d58e5b | 6682 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6683 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6684 | return (tem); |
6685 | } | |
25554267 DA |
6686 | |
6687 | /* Called after W's margins, fringes or scroll bars was adjusted. */ | |
6688 | ||
6689 | static void | |
6690 | apply_window_adjustment (struct window *w) | |
6691 | { | |
6692 | eassert (w); | |
6693 | adjust_window_margins (w); | |
6694 | clear_glyph_matrix (w->current_matrix); | |
6695 | w->window_end_valid = 0; | |
44c5e192 | 6696 | windows_or_buffers_changed = 30; |
5961ad6c | 6697 | wset_redisplay (w); |
bd0443bb | 6698 | adjust_frame_glyphs (XFRAME (WINDOW_FRAME (w))); |
25554267 DA |
6699 | } |
6700 | ||
5500c422 GM |
6701 | \f |
6702 | /*********************************************************************** | |
6703 | Marginal Areas | |
6704 | ***********************************************************************/ | |
6705 | ||
25554267 DA |
6706 | static struct window * |
6707 | set_window_margins (struct window *w, Lisp_Object left_width, | |
6708 | Lisp_Object right_width) | |
5500c422 | 6709 | { |
eeaf9bf3 | 6710 | int left, right; |
5500c422 | 6711 | |
eeaf9bf3 | 6712 | /* FIXME: what about margins that are too wide? */ |
eeaf9bf3 DA |
6713 | left = (NILP (left_width) ? 0 |
6714 | : (CHECK_NATNUM (left_width), XINT (left_width))); | |
6715 | right = (NILP (right_width) ? 0 | |
6716 | : (CHECK_NATNUM (right_width), XINT (right_width))); | |
5500c422 | 6717 | |
eeaf9bf3 | 6718 | if (w->left_margin_cols != left || w->right_margin_cols != right) |
6b61353c | 6719 | { |
eeaf9bf3 DA |
6720 | w->left_margin_cols = left; |
6721 | w->right_margin_cols = right; | |
25554267 DA |
6722 | return w; |
6723 | } | |
6724 | return NULL; | |
6725 | } | |
949cf20f | 6726 | |
25554267 DA |
6727 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, |
6728 | 2, 3, 0, | |
6729 | doc: /* Set width of marginal areas of window WINDOW. | |
6730 | WINDOW must be a live window and defaults to the selected one. | |
949cf20f | 6731 | |
25554267 DA |
6732 | Second arg LEFT-WIDTH specifies the number of character cells to |
6733 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6734 | does the same for the right marginal area. A nil width parameter | |
6735 | means no margin. | |
5500c422 | 6736 | |
25554267 DA |
6737 | Return t if any margin was actually changed and nil otherwise. */) |
6738 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width) | |
6739 | { | |
6740 | struct window *w = set_window_margins (decode_live_window (window), | |
6741 | left_width, right_width); | |
6742 | return w ? (apply_window_adjustment (w), Qt) : Qnil; | |
5500c422 GM |
6743 | } |
6744 | ||
6745 | ||
6746 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6747 | 0, 1, 0, | |
fdb82f93 | 6748 | doc: /* Get width of marginal areas of window WINDOW. |
52162052 MR |
6749 | WINDOW must be a live window and defaults to the selected one. |
6750 | ||
fdb82f93 PJ |
6751 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). |
6752 | If a marginal area does not exist, its width will be returned | |
6753 | as nil. */) | |
5842a27b | 6754 | (Lisp_Object window) |
5500c422 | 6755 | { |
52162052 | 6756 | struct window *w = decode_live_window (window); |
880e6158 MR |
6757 | return Fcons (w->left_margin_cols |
6758 | ? make_number (w->left_margin_cols) : Qnil, | |
6759 | w->right_margin_cols | |
6760 | ? make_number (w->right_margin_cols) : Qnil); | |
949cf20f KS |
6761 | } |
6762 | ||
6763 | ||
6764 | \f | |
6765 | /*********************************************************************** | |
6766 | Fringes | |
6767 | ***********************************************************************/ | |
6768 | ||
25554267 DA |
6769 | static struct window * |
6770 | set_window_fringes (struct window *w, Lisp_Object left_width, | |
6771 | Lisp_Object right_width, Lisp_Object outside_margins) | |
949cf20f | 6772 | { |
9e37ee3b | 6773 | int left, right, outside = !NILP (outside_margins); |
949cf20f | 6774 | |
9e37ee3b DA |
6775 | left = (NILP (left_width) ? -1 |
6776 | : (CHECK_NATNUM (left_width), XINT (left_width))); | |
6777 | right = (NILP (right_width) ? -1 | |
6778 | : (CHECK_NATNUM (right_width), XINT (right_width))); | |
5a857365 | 6779 | |
9e37ee3b | 6780 | /* Do nothing on a tty or if nothing to actually change. */ |
d46c6df5 | 6781 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
9e37ee3b DA |
6782 | && (w->left_fringe_width != left |
6783 | || w->right_fringe_width != right | |
2af3565e | 6784 | || w->fringes_outside_margins != outside)) |
949cf20f | 6785 | { |
9e37ee3b DA |
6786 | w->left_fringe_width = left; |
6787 | w->right_fringe_width = right; | |
2af3565e | 6788 | w->fringes_outside_margins = outside; |
25554267 DA |
6789 | return w; |
6790 | } | |
6791 | return NULL; | |
6792 | } | |
949cf20f | 6793 | |
25554267 DA |
6794 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, |
6795 | 2, 4, 0, | |
6796 | doc: /* Set the fringe widths of window WINDOW. | |
6797 | WINDOW must be a live window and defaults to the selected one. | |
949cf20f | 6798 | |
25554267 DA |
6799 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for |
6800 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6801 | fringe width. If a fringe width arg is nil, that means to use the | |
6802 | frame's default fringe width. Default fringe widths can be set with | |
6803 | the command `set-fringe-style'. | |
6804 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6805 | outside of the display margins. By default, fringes are drawn between | |
6806 | display marginal areas and the text area. | |
949cf20f | 6807 | |
25554267 DA |
6808 | Return t if any fringe was actually changed and nil otherwise. */) |
6809 | (Lisp_Object window, Lisp_Object left_width, | |
6810 | Lisp_Object right_width, Lisp_Object outside_margins) | |
6811 | { | |
6812 | struct window *w | |
6813 | = set_window_fringes (decode_live_window (window), | |
6814 | left_width, right_width, outside_margins); | |
6815 | return w ? (apply_window_adjustment (w), Qt) : Qnil; | |
949cf20f KS |
6816 | } |
6817 | ||
6818 | ||
6819 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6820 | 0, 1, 0, | |
6821 | doc: /* Get width of fringes of window WINDOW. | |
52162052 MR |
6822 | WINDOW must be a live window and defaults to the selected one. |
6823 | ||
6b61353c | 6824 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
5842a27b | 6825 | (Lisp_Object window) |
949cf20f | 6826 | { |
52162052 | 6827 | struct window *w = decode_live_window (window); |
d46c6df5 | 6828 | |
89bc0592 DA |
6829 | return list3 (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6830 | make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
6831 | WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) ? Qt : Qnil); | |
949cf20f KS |
6832 | } |
6833 | ||
6834 | ||
6835 | \f | |
6836 | /*********************************************************************** | |
6837 | Scroll bars | |
6838 | ***********************************************************************/ | |
6839 | ||
25554267 DA |
6840 | static struct window * |
6841 | set_window_scroll_bars (struct window *w, Lisp_Object width, | |
6842 | Lisp_Object vertical_type, Lisp_Object horizontal_type) | |
949cf20f | 6843 | { |
38a2c910 | 6844 | int iwidth = (NILP (width) ? -1 : (CHECK_NATNUM (width), XINT (width))); |
949cf20f | 6845 | |
38a2c910 DA |
6846 | if (iwidth == 0) |
6847 | vertical_type = Qnil; | |
949cf20f | 6848 | |
413a79ad | 6849 | if (!(NILP (vertical_type) |
0cc1039f | 6850 | || EQ (vertical_type, Qleft) |
6b61353c KH |
6851 | || EQ (vertical_type, Qright) |
6852 | || EQ (vertical_type, Qt))) | |
6853 | error ("Invalid type of vertical scroll bar"); | |
6854 | ||
38a2c910 | 6855 | if (w->scroll_bar_width != iwidth |
d3d50620 | 6856 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) |
949cf20f | 6857 | { |
38a2c910 | 6858 | w->scroll_bar_width = iwidth; |
e8c17b81 | 6859 | wset_vertical_scroll_bar_type (w, vertical_type); |
25554267 DA |
6860 | return w; |
6861 | } | |
6862 | return NULL; | |
6863 | } | |
949cf20f | 6864 | |
25554267 DA |
6865 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, |
6866 | Sset_window_scroll_bars, 2, 4, 0, | |
6867 | doc: /* Set width and type of scroll bars of window WINDOW. | |
6868 | WINDOW must be a live window and defaults to the selected one. | |
949cf20f | 6869 | |
880e6158 | 6870 | Second parameter WIDTH specifies the pixel width for the scroll bar. |
25554267 DA |
6871 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll |
6872 | bar: left, right, or nil. | |
6873 | If WIDTH is nil, use the frame's scroll-bar width. | |
6874 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. | |
6875 | Fourth parameter HORIZONTAL-TYPE is currently unused. | |
949cf20f | 6876 | |
880e6158 | 6877 | Return t if scroll bars were actually changed and nil otherwise. */) |
25554267 DA |
6878 | (Lisp_Object window, Lisp_Object width, |
6879 | Lisp_Object vertical_type, Lisp_Object horizontal_type) | |
6880 | { | |
6881 | struct window *w | |
6882 | = set_window_scroll_bars (decode_live_window (window), | |
6883 | width, vertical_type, horizontal_type); | |
6884 | return w ? (apply_window_adjustment (w), Qt) : Qnil; | |
949cf20f KS |
6885 | } |
6886 | ||
6887 | ||
6888 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6889 | 0, 1, 0, | |
6890 | doc: /* Get width and type of scroll bars of window WINDOW. | |
52162052 MR |
6891 | WINDOW must be a live window and defaults to the selected one. |
6892 | ||
6b61353c KH |
6893 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6894 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6895 | value. */) | |
5842a27b | 6896 | (Lisp_Object window) |
949cf20f | 6897 | { |
52162052 | 6898 | struct window *w = decode_live_window (window); |
89bc0592 | 6899 | |
44c5e192 | 6900 | return list4 (make_number (WINDOW_SCROLL_BAR_AREA_WIDTH (w)), |
89bc0592 DA |
6901 | make_number (WINDOW_SCROLL_BAR_COLS (w)), |
6902 | w->vertical_scroll_bar_type, Qnil); | |
5500c422 GM |
6903 | } |
6904 | ||
6905 | ||
7ab12479 | 6906 | \f |
5500c422 GM |
6907 | /*********************************************************************** |
6908 | Smooth scrolling | |
6909 | ***********************************************************************/ | |
6910 | ||
0cc1039f | 6911 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 | 6912 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
49745b39 | 6913 | If WINDOW is omitted or nil, it defaults to the selected window. |
0cc1039f | 6914 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6915 | optional second arg PIXELS-P means value is measured in pixels. */) |
5842a27b | 6916 | (Lisp_Object window, Lisp_Object pixels_p) |
5500c422 | 6917 | { |
47004952 | 6918 | Lisp_Object result; |
1f76f6f5 MR |
6919 | struct window *w = decode_live_window (window); |
6920 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 6921 | |
5500c422 | 6922 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6923 | result = (NILP (pixels_p) |
6924 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6925 | : make_number (-w->vscroll)); | |
5500c422 | 6926 | else |
47004952 GM |
6927 | result = make_number (0); |
6928 | return result; | |
5500c422 GM |
6929 | } |
6930 | ||
6931 | ||
6932 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6933 | 2, 3, 0, |
fdb82f93 | 6934 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6935 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6936 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6937 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6938 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6939 | corresponds to an integral number of pixels. The return value is the | |
6940 | result of this rounding. | |
6941 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
5842a27b | 6942 | (Lisp_Object window, Lisp_Object vscroll, Lisp_Object pixels_p) |
5500c422 | 6943 | { |
1f76f6f5 MR |
6944 | struct window *w = decode_live_window (window); |
6945 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 6946 | |
b7826503 | 6947 | CHECK_NUMBER_OR_FLOAT (vscroll); |
177c0ea7 | 6948 | |
5500c422 GM |
6949 | if (FRAME_WINDOW_P (f)) |
6950 | { | |
6951 | int old_dy = w->vscroll; | |
177c0ea7 | 6952 | |
0cc1039f KS |
6953 | w->vscroll = - (NILP (pixels_p) |
6954 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6955 | : XFLOATINT (vscroll)); | |
47004952 | 6956 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6957 | |
e56263e5 KS |
6958 | if (w->vscroll != old_dy) |
6959 | { | |
6960 | /* Adjust glyph matrix of the frame if the virtual display | |
6961 | area becomes larger than before. */ | |
6962 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
bd0443bb | 6963 | adjust_frame_glyphs (f); |
177c0ea7 | 6964 | |
e56263e5 | 6965 | /* Prevent redisplay shortcuts. */ |
e74aeda8 | 6966 | XBUFFER (w->contents)->prevent_redisplay_optimizations_p = 1; |
e56263e5 | 6967 | } |
5500c422 | 6968 | } |
177c0ea7 | 6969 | |
0cc1039f | 6970 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 6971 | } |
177c0ea7 | 6972 | |
7bbb5782 GM |
6973 | \f |
6974 | /* Call FN for all leaf windows on frame F. FN is called with the | |
6975 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 6976 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 | 6977 | |
2f7c71a1 AS |
6978 | static void |
6979 | foreach_window (struct frame *f, int (*fn) (struct window *, void *), | |
6980 | void *user_data) | |
7bbb5782 | 6981 | { |
56f2de10 | 6982 | /* delete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
76fb556f YM |
6983 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) |
6984 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
6985 | } |
6986 | ||
6987 | ||
6988 | /* Helper function for foreach_window. Call FN for all leaf windows | |
6989 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 6990 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 6991 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 6992 | |
67492200 | 6993 | static int |
971de7fb | 6994 | foreach_window_1 (struct window *w, int (*fn) (struct window *, void *), void *user_data) |
7bbb5782 | 6995 | { |
67492200 | 6996 | int cont; |
177c0ea7 | 6997 | |
67492200 | 6998 | for (cont = 1; w && cont;) |
7bbb5782 | 6999 | { |
e74aeda8 DA |
7000 | if (WINDOWP (w->contents)) |
7001 | cont = foreach_window_1 (XWINDOW (w->contents), fn, user_data); | |
177c0ea7 | 7002 | else |
0f532a9a | 7003 | cont = fn (w, user_data); |
177c0ea7 | 7004 | |
d3d50620 | 7005 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
7bbb5782 | 7006 | } |
67492200 GM |
7007 | |
7008 | return cont; | |
7bbb5782 GM |
7009 | } |
7010 | ||
5500c422 GM |
7011 | /*********************************************************************** |
7012 | Initialization | |
7013 | ***********************************************************************/ | |
7014 | ||
6198ccd0 MR |
7015 | /* Return 1 if window configurations CONFIGURATION1 and CONFIGURATION2 |
7016 | describe the same state of affairs. This is used by Fequal. | |
7017 | ||
f75d7a91 | 7018 | IGNORE_POSITIONS means ignore non-matching scroll positions |
6198ccd0 MR |
7019 | and the like. |
7020 | ||
e4769531 | 7021 | This ignores a couple of things like the dedication status of |
b6f67890 MR |
7022 | window, combination_limit and the like. This might have to be |
7023 | fixed. */ | |
cbff28e8 | 7024 | |
f75d7a91 PE |
7025 | bool |
7026 | compare_window_configurations (Lisp_Object configuration1, | |
7027 | Lisp_Object configuration2, | |
7028 | bool ignore_positions) | |
cbff28e8 RS |
7029 | { |
7030 | register struct save_window_data *d1, *d2; | |
6198ccd0 | 7031 | struct Lisp_Vector *sws1, *sws2; |
71f02bc5 | 7032 | ptrdiff_t i; |
cbff28e8 | 7033 | |
6198ccd0 MR |
7034 | CHECK_WINDOW_CONFIGURATION (configuration1); |
7035 | CHECK_WINDOW_CONFIGURATION (configuration2); | |
7036 | ||
7037 | d1 = (struct save_window_data *) XVECTOR (configuration1); | |
7038 | d2 = (struct save_window_data *) XVECTOR (configuration2); | |
7039 | sws1 = XVECTOR (d1->saved_windows); | |
7040 | sws2 = XVECTOR (d2->saved_windows); | |
7041 | ||
7042 | /* Frame settings must match. */ | |
7043 | if (d1->frame_cols != d2->frame_cols | |
7044 | || d1->frame_lines != d2->frame_lines | |
7045 | || d1->frame_menu_bar_lines != d2->frame_menu_bar_lines | |
7046 | || !EQ (d1->selected_frame, d2->selected_frame) | |
7047 | || !EQ (d1->current_buffer, d2->current_buffer) | |
7048 | || (!ignore_positions | |
7049 | && (!EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window) | |
7050 | || !EQ (d1->minibuf_selected_window, d2->minibuf_selected_window))) | |
7051 | || !EQ (d1->focus_frame, d2->focus_frame) | |
7052 | /* Verify that the two configurations have the same number of windows. */ | |
7053 | || sws1->header.size != sws2->header.size) | |
cbff28e8 | 7054 | return 0; |
cbff28e8 | 7055 | |
6198ccd0 | 7056 | for (i = 0; i < sws1->header.size; i++) |
cbff28e8 | 7057 | { |
6198ccd0 | 7058 | struct saved_window *sw1, *sw2; |
cbff28e8 | 7059 | |
6198ccd0 MR |
7060 | sw1 = SAVED_WINDOW_N (sws1, i); |
7061 | sw2 = SAVED_WINDOW_N (sws2, i); | |
7062 | ||
7063 | if ( | |
7064 | /* The "current" windows in the two configurations must | |
7065 | correspond to each other. */ | |
7066 | EQ (d1->current_window, sw1->window) | |
7067 | != EQ (d2->current_window, sw2->window) | |
7068 | /* Windows' buffers must match. */ | |
7069 | || !EQ (sw1->buffer, sw2->buffer) | |
880e6158 MR |
7070 | || !EQ (sw1->pixel_left, sw2->pixel_left) |
7071 | || !EQ (sw1->pixel_top, sw2->pixel_top) | |
7072 | || !EQ (sw1->pixel_height, sw2->pixel_height) | |
7073 | || !EQ (sw1->pixel_width, sw2->pixel_width) | |
6198ccd0 MR |
7074 | || !EQ (sw1->left_col, sw2->left_col) |
7075 | || !EQ (sw1->top_line, sw2->top_line) | |
7076 | || !EQ (sw1->total_cols, sw2->total_cols) | |
7077 | || !EQ (sw1->total_lines, sw2->total_lines) | |
7078 | || !EQ (sw1->display_table, sw2->display_table) | |
7079 | /* The next two disjuncts check the window structure for | |
7080 | equality. */ | |
7081 | || !EQ (sw1->parent, sw2->parent) | |
7082 | || !EQ (sw1->prev, sw2->prev) | |
7083 | || (!ignore_positions | |
7084 | && (!EQ (sw1->hscroll, sw2->hscroll) | |
7085 | || !EQ (sw1->min_hscroll, sw2->min_hscroll) | |
7086 | || !EQ (sw1->start_at_line_beg, sw2->start_at_line_beg) | |
7087 | || NILP (Fequal (sw1->start, sw2->start)) | |
4d89ee37 | 7088 | || NILP (Fequal (sw1->pointm, sw2->pointm)))) |
6198ccd0 MR |
7089 | || !EQ (sw1->left_margin_cols, sw2->left_margin_cols) |
7090 | || !EQ (sw1->right_margin_cols, sw2->right_margin_cols) | |
7091 | || !EQ (sw1->left_fringe_width, sw2->left_fringe_width) | |
7092 | || !EQ (sw1->right_fringe_width, sw2->right_fringe_width) | |
7093 | || !EQ (sw1->fringes_outside_margins, sw2->fringes_outside_margins) | |
7094 | || !EQ (sw1->scroll_bar_width, sw2->scroll_bar_width) | |
7095 | || !EQ (sw1->vertical_scroll_bar_type, sw2->vertical_scroll_bar_type)) | |
949cf20f | 7096 | return 0; |
cbff28e8 RS |
7097 | } |
7098 | ||
7099 | return 1; | |
7100 | } | |
2f8274be RS |
7101 | |
7102 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
7103 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 | 7104 | doc: /* Compare two window configurations as regards the structure of windows. |
4d89ee37 | 7105 | This function ignores details such as the values of point |
fdb82f93 | 7106 | and scrolling positions. */) |
5842a27b | 7107 | (Lisp_Object x, Lisp_Object y) |
2f8274be RS |
7108 | { |
7109 | if (compare_window_configurations (x, y, 1)) | |
7110 | return Qt; | |
7111 | return Qnil; | |
7112 | } | |
cbff28e8 | 7113 | \f |
dfcf069d | 7114 | void |
971de7fb | 7115 | init_window_once (void) |
7ab12479 | 7116 | { |
3224dac1 | 7117 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
7118 | XSETFRAME (selected_frame, f); |
7119 | Vterminal_frame = selected_frame; | |
e69b0960 DA |
7120 | minibuf_window = f->minibuffer_window; |
7121 | selected_window = f->selected_window; | |
7ab12479 JB |
7122 | } |
7123 | ||
67492200 | 7124 | void |
971de7fb | 7125 | init_window (void) |
67492200 GM |
7126 | { |
7127 | Vwindow_list = Qnil; | |
7128 | } | |
7129 | ||
dfcf069d | 7130 | void |
971de7fb | 7131 | syms_of_window (void) |
7ab12479 | 7132 | { |
fe6aa7a1 BT |
7133 | #include "window.x" |
7134 | ||
cd3520a4 JB |
7135 | DEFSYM (Qscroll_up, "scroll-up"); |
7136 | DEFSYM (Qscroll_down, "scroll-down"); | |
7137 | DEFSYM (Qscroll_command, "scroll-command"); | |
a4b000fb JL |
7138 | |
7139 | Fput (Qscroll_up, Qscroll_command, Qt); | |
7140 | Fput (Qscroll_down, Qscroll_command, Qt); | |
7141 | ||
cd3520a4 JB |
7142 | DEFSYM (Qwindow_configuration_change_hook, "window-configuration-change-hook"); |
7143 | DEFSYM (Qwindowp, "windowp"); | |
7144 | DEFSYM (Qwindow_configuration_p, "window-configuration-p"); | |
7145 | DEFSYM (Qwindow_live_p, "window-live-p"); | |
52162052 | 7146 | DEFSYM (Qwindow_valid_p, "window-valid-p"); |
cd3520a4 JB |
7147 | DEFSYM (Qwindow_deletable_p, "window-deletable-p"); |
7148 | DEFSYM (Qdelete_window, "delete-window"); | |
5386012d MR |
7149 | DEFSYM (Qwindow_resize_root_window, "window--resize-root-window"); |
7150 | DEFSYM (Qwindow_resize_root_window_vertically, "window--resize-root-window-vertically"); | |
880e6158 | 7151 | DEFSYM (Qwindow_pixel_to_total, "window--pixel-to-total"); |
cd3520a4 JB |
7152 | DEFSYM (Qsafe, "safe"); |
7153 | DEFSYM (Qdisplay_buffer, "display-buffer"); | |
7154 | DEFSYM (Qreplace_buffer_in_windows, "replace-buffer-in-windows"); | |
7155 | DEFSYM (Qrecord_window_buffer, "record-window-buffer"); | |
7156 | DEFSYM (Qget_mru_window, "get-mru-window"); | |
5938d519 | 7157 | DEFSYM (Qwindow_size, "window-size"); |
cd3520a4 JB |
7158 | DEFSYM (Qtemp_buffer_show_hook, "temp-buffer-show-hook"); |
7159 | DEFSYM (Qabove, "above"); | |
7160 | DEFSYM (Qbelow, "below"); | |
6a6ee00d | 7161 | DEFSYM (Qclone_of, "clone-of"); |
6cb4da45 MR |
7162 | DEFSYM (Qfloor, "floor"); |
7163 | DEFSYM (Qceiling, "ceiling"); | |
b9e809c2 | 7164 | |
67492200 | 7165 | staticpro (&Vwindow_list); |
8bfb170b KS |
7166 | |
7167 | minibuf_selected_window = Qnil; | |
3dbab091 | 7168 | staticpro (&minibuf_selected_window); |
67492200 | 7169 | |
c876b227 | 7170 | window_scroll_pixel_based_preserve_x = -1; |
66fe93d1 | 7171 | window_scroll_pixel_based_preserve_y = -1; |
c876b227 SM |
7172 | window_scroll_preserve_hpos = -1; |
7173 | window_scroll_preserve_vpos = -1; | |
66d43aea | 7174 | |
29208e82 | 7175 | DEFVAR_LISP ("temp-buffer-show-function", Vtemp_buffer_show_function, |
fdb82f93 PJ |
7176 | doc: /* Non-nil means call as function to display a help buffer. |
7177 | The function is called with one argument, the buffer to be displayed. | |
7178 | Used by `with-output-to-temp-buffer'. | |
7179 | If this function is used, then it must do the entire job of showing | |
7180 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 | 7181 | Vtemp_buffer_show_function = Qnil; |
e10ac9f1 | 7182 | |
29208e82 | 7183 | DEFVAR_LISP ("minibuffer-scroll-window", Vminibuf_scroll_window, |
fdb82f93 | 7184 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
7185 | Vminibuf_scroll_window = Qnil; |
7186 | ||
29208e82 | 7187 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", mode_line_in_non_selected_windows, |
26124d5e | 7188 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
7189 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
7190 | is displayed in the `mode-line' face. */); | |
7191 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 7192 | |
29208e82 | 7193 | DEFVAR_LISP ("other-window-scroll-buffer", Vother_window_scroll_buffer, |
2907acd4 | 7194 | doc: /* If this is a live buffer, \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
7195 | Vother_window_scroll_buffer = Qnil; |
7196 | ||
29208e82 | 7197 | DEFVAR_BOOL ("auto-window-vscroll", auto_window_vscroll_p, |
e10ac9f1 | 7198 | doc: /* Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); |
e56263e5 KS |
7199 | auto_window_vscroll_p = 1; |
7200 | ||
29208e82 | 7201 | DEFVAR_INT ("next-screen-context-lines", next_screen_context_lines, |
e10ac9f1 | 7202 | doc: /* Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
7203 | next_screen_context_lines = 2; |
7204 | ||
5500c422 | 7205 | DEFVAR_LISP ("scroll-preserve-screen-position", |
29208e82 | 7206 | Vscroll_preserve_screen_position, |
e10ac9f1 | 7207 | doc: /* Controls if scroll commands move point to keep its screen position unchanged. |
bdf4ec93 RS |
7208 | A value of nil means point does not keep its screen position except |
7209 | at the scroll margin or window boundary respectively. | |
7210 | A value of t means point keeps its screen position if the scroll | |
7211 | command moved it vertically out of the window, e.g. when scrolling | |
7212 | by full screens. | |
9013a7f8 | 7213 | Any other value means point always keeps its screen position. |
a4b000fb JL |
7214 | Scroll commands should have the `scroll-command' property |
7215 | on their symbols to be controlled by this variable. */); | |
5500c422 | 7216 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 7217 | |
29208e82 | 7218 | DEFVAR_LISP ("window-point-insertion-type", Vwindow_point_insertion_type, |
a1562258 SM |
7219 | doc: /* Type of marker to use for `window-point'. */); |
7220 | Vwindow_point_insertion_type = Qnil; | |
63032a0e | 7221 | DEFSYM (Qwindow_point_insertion_type, "window_point_insertion_type"); |
a1562258 | 7222 | |
543f5fb1 | 7223 | DEFVAR_LISP ("window-configuration-change-hook", |
29208e82 | 7224 | Vwindow_configuration_change_hook, |
fdb82f93 | 7225 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
7226 | The buffer-local part is run once per window, with the relevant window |
7227 | selected; while the global part is run only once for the modified frame, | |
7228 | with the relevant frame selected. */); | |
543f5fb1 RS |
7229 | Vwindow_configuration_change_hook = Qnil; |
7230 | ||
29208e82 | 7231 | DEFVAR_LISP ("recenter-redisplay", Vrecenter_redisplay, |
61d4b438 MR |
7232 | doc: /* Non-nil means `recenter' redraws entire frame. |
7233 | If this option is non-nil, then the `recenter' command with a nil | |
7234 | argument will redraw the entire frame; the special value `tty' causes | |
7235 | the frame to be redrawn only if it is a tty frame. */); | |
666e158e MB |
7236 | Vrecenter_redisplay = Qtty; |
7237 | ||
a0c2d0ae | 7238 | DEFVAR_LISP ("window-combination-resize", Vwindow_combination_resize, |
454592a6 | 7239 | doc: /* If t, resize window combinations proportionally. |
1a13852e | 7240 | If this variable is nil, splitting a window gets the entire screen space |
a0c2d0ae | 7241 | for displaying the new window from the window to split. Deleting and |
df85d315 | 7242 | resizing a window preferably resizes one adjacent window only. |
a0c2d0ae | 7243 | |
454592a6 | 7244 | If this variable is t, splitting a window tries to get the space |
a0c2d0ae MR |
7245 | proportionally from all windows in the same combination. This also |
7246 | allows to split a window that is otherwise too small or of fixed size. | |
7247 | Resizing and deleting a window proportionally resize all windows in the | |
7248 | same combination. | |
1a13852e | 7249 | |
454592a6 MR |
7250 | Other values are reserved for future use. |
7251 | ||
9fc9a531 AH |
7252 | This variable takes no effect if the variable `window-combination-limit' is |
7253 | non-nil. */); | |
a0c2d0ae | 7254 | Vwindow_combination_resize = Qnil; |
1a13852e | 7255 | |
b6f67890 | 7256 | DEFVAR_LISP ("window-combination-limit", Vwindow_combination_limit, |
8e17c9ba MR |
7257 | doc: /* If non-nil, splitting a window makes a new parent window. |
7258 | The following values are recognized: | |
1a13852e | 7259 | |
8e17c9ba | 7260 | nil means splitting a window will create a new parent window only if the |
5938d519 MR |
7261 | window has no parent window or the window shall become part of a |
7262 | combination orthogonal to the one it is part of. | |
1a13852e | 7263 | |
5938d519 MR |
7264 | `window-size' means that splitting a window for displaying a buffer |
7265 | makes a new parent window provided `display-buffer' is supposed to | |
7266 | explicitly set the window's size due to the presence of a | |
7267 | `window-height' or `window-width' entry in the alist used by | |
7268 | `display-buffer'. Otherwise, this value is handled like nil. | |
8e17c9ba MR |
7269 | |
7270 | `temp-buffer' means that splitting a window for displaying a temporary | |
7271 | buffer always makes a new parent window. Otherwise, this value is | |
7272 | handled like nil. | |
7273 | ||
8e17c9ba MR |
7274 | `display-buffer' means that splitting a window for displaying a buffer |
7275 | always makes a new parent window. Since temporary buffers are | |
7276 | displayed by the function `display-buffer', this value is stronger | |
7277 | than `temp-buffer'. Splitting a window for other purpose makes a | |
7278 | new parent window only if needed. | |
7279 | ||
7280 | t means that splitting a window always creates a new parent window. If | |
7281 | all splits behave this way, each frame's window tree is a binary | |
7282 | tree and every window but the frame's root window has exactly one | |
7283 | sibling. | |
1a13852e | 7284 | |
8e17c9ba | 7285 | Other values are reserved for future use. */); |
5938d519 | 7286 | Vwindow_combination_limit = Qwindow_size; |
666e158e | 7287 | |
6a6ee00d MR |
7288 | DEFVAR_LISP ("window-persistent-parameters", Vwindow_persistent_parameters, |
7289 | doc: /* Alist of persistent window parameters. | |
34a02f46 MR |
7290 | This alist specifies which window parameters shall get saved by |
7291 | `current-window-configuration' and `window-state-get' and subsequently | |
7292 | restored to their previous values by `set-window-configuration' and | |
7293 | `window-state-put'. | |
6a6ee00d MR |
7294 | |
7295 | The car of each entry of this alist is the symbol specifying the | |
7296 | parameter. The cdr is one of the following: | |
7297 | ||
34a02f46 MR |
7298 | nil means the parameter is neither saved by `window-state-get' nor by |
7299 | `current-window-configuration'. | |
6a6ee00d | 7300 | |
34a02f46 MR |
7301 | t means the parameter is saved by `current-window-configuration' and, |
7302 | provided its WRITABLE argument is nil, by `window-state-get'. | |
6a6ee00d | 7303 | |
34a02f46 MR |
7304 | The symbol `writable' means the parameter is saved unconditionally by |
7305 | both `current-window-configuration' and `window-state-get'. Do not use | |
7306 | this value for parameters without read syntax (like windows or frames). | |
6a6ee00d MR |
7307 | |
7308 | Parameters not saved by `current-window-configuration' or | |
7309 | `window-state-get' are left alone by `set-window-configuration' | |
7310 | respectively are not installed by `window-state-put'. */); | |
34a02f46 | 7311 | Vwindow_persistent_parameters = list1 (Fcons (Qclone_of, Qt)); |
6a6ee00d | 7312 | |
880e6158 | 7313 | DEFVAR_BOOL ("window-resize-pixelwise", window_resize_pixelwise, |
ca58fa73 GM |
7314 | doc: /* Non-nil means resize windows pixelwise. |
7315 | This currently affects the functions: `split-window', `maximize-window', | |
7316 | `minimize-window', `fit-window-to-buffer' and `fit-frame-to-buffer', and | |
7317 | all functions that symmetrically resize a parent window. | |
880e6158 MR |
7318 | |
7319 | Note that when a frame's pixel size is not a multiple of the | |
7320 | frame's character size, at least one window may get resized | |
7321 | pixelwise even if this option is nil. */); | |
7322 | window_resize_pixelwise = 0; | |
7ab12479 JB |
7323 | } |
7324 | ||
dfcf069d | 7325 | void |
971de7fb | 7326 | keys_of_window (void) |
7ab12479 | 7327 | { |
7ab12479 JB |
7328 | initial_define_key (control_x_map, '<', "scroll-left"); |
7329 | initial_define_key (control_x_map, '>', "scroll-right"); | |
7330 | ||
32129746 | 7331 | initial_define_key (global_map, Ctl ('V'), "scroll-up-command"); |
7ab12479 | 7332 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); |
32129746 | 7333 | initial_define_key (meta_map, 'v', "scroll-down-command"); |
7ab12479 | 7334 | } |