Commit | Line | Data |
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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
ab422c4d PE |
3 | Copyright (C) 1985-1987, 1993-1998, 2000-2013 Free Software |
4 | Foundation, Inc. | |
7ab12479 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
7ab12479 | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
7ab12479 JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
7ab12479 | 20 | |
18160b98 | 21 | #include <config.h> |
e8c17b81 PE |
22 | |
23 | #define WINDOW_INLINE EXTERN_INLINE | |
24 | ||
4d553a13 KL |
25 | #include <stdio.h> |
26 | ||
7ab12479 | 27 | #include "lisp.h" |
e5560ff7 | 28 | #include "character.h" |
7ab12479 | 29 | #include "buffer.h" |
3e4731a3 | 30 | #include "keyboard.h" |
e35f6ff7 | 31 | #include "keymap.h" |
44fa5b1e | 32 | #include "frame.h" |
7ab12479 JB |
33 | #include "window.h" |
34 | #include "commands.h" | |
35 | #include "indent.h" | |
36 | #include "termchar.h" | |
37 | #include "disptab.h" | |
dfcf069d | 38 | #include "dispextern.h" |
5500c422 GM |
39 | #include "blockinput.h" |
40 | #include "intervals.h" | |
de509a60 | 41 | #include "termhooks.h" /* For FRAME_TERMINAL. */ |
5500c422 | 42 | |
6d55d620 | 43 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 44 | #include "xterm.h" |
5500c422 | 45 | #endif /* HAVE_X_WINDOWS */ |
0fda9b75 | 46 | #ifdef HAVE_NTGUI |
8f23f280 AI |
47 | #include "w32term.h" |
48 | #endif | |
1e3c8885 EZ |
49 | #ifdef MSDOS |
50 | #include "msdos.h" | |
51 | #endif | |
edfda783 AR |
52 | #ifdef HAVE_NS |
53 | #include "nsterm.h" | |
54 | #endif | |
5500c422 | 55 | |
b52d6985 PE |
56 | Lisp_Object Qwindowp, Qwindow_live_p; |
57 | static Lisp_Object Qwindow_valid_p; | |
84575e67 PE |
58 | static Lisp_Object Qwindow_configuration_p; |
59 | static Lisp_Object Qrecord_window_buffer; | |
9397e56f | 60 | static Lisp_Object Qwindow_deletable_p, Qdelete_window, Qdisplay_buffer; |
b9e809c2 | 61 | static Lisp_Object Qreplace_buffer_in_windows, Qget_mru_window; |
5386012d | 62 | static Lisp_Object Qwindow_resize_root_window, Qwindow_resize_root_window_vertically; |
955cbe7b | 63 | static Lisp_Object Qscroll_up, Qscroll_down, Qscroll_command; |
5938d519 | 64 | static Lisp_Object Qsafe, Qabove, Qbelow, Qwindow_size, Qclone_of; |
b9e809c2 | 65 | |
f57e2426 | 66 | static int displayed_window_lines (struct window *); |
f57e2426 J |
67 | static int count_windows (struct window *); |
68 | static int get_leaf_windows (struct window *, struct window **, int); | |
56b5d5b1 DA |
69 | static void window_scroll (Lisp_Object, EMACS_INT, bool, int); |
70 | static void window_scroll_pixel_based (Lisp_Object, int, bool, int); | |
71 | static void window_scroll_line_based (Lisp_Object, int, bool, int); | |
f57e2426 J |
72 | static Lisp_Object window_list (void); |
73 | static int add_window_to_list (struct window *, void *); | |
f57e2426 J |
74 | static Lisp_Object next_window (Lisp_Object, Lisp_Object, |
75 | Lisp_Object, int); | |
76 | static void decode_next_window_args (Lisp_Object *, Lisp_Object *, | |
77 | Lisp_Object *); | |
2f7c71a1 | 78 | static void foreach_window (struct frame *, |
f95464e4 | 79 | int (* fn) (struct window *, void *), |
2f7c71a1 | 80 | void *); |
f57e2426 J |
81 | static int foreach_window_1 (struct window *, |
82 | int (* fn) (struct window *, void *), | |
83 | void *); | |
84 | static Lisp_Object window_list_1 (Lisp_Object, Lisp_Object, Lisp_Object); | |
748fa866 DA |
85 | static int window_resize_check (struct window *, bool); |
86 | static void window_resize_apply (struct window *, bool); | |
7c82f3e2 | 87 | static Lisp_Object select_window (Lisp_Object, Lisp_Object, int); |
12384b01 | 88 | static void select_window_1 (Lisp_Object, bool); |
b7354ddf | 89 | |
25554267 DA |
90 | static struct window *set_window_fringes (struct window *, Lisp_Object, |
91 | Lisp_Object, Lisp_Object); | |
92 | static struct window *set_window_margins (struct window *, Lisp_Object, | |
93 | Lisp_Object); | |
94 | static struct window *set_window_scroll_bars (struct window *, Lisp_Object, | |
95 | Lisp_Object, Lisp_Object); | |
96 | static void apply_window_adjustment (struct window *); | |
97 | ||
7ab12479 JB |
98 | /* This is the window in which the terminal's cursor should |
99 | be left when nothing is being done with it. This must | |
100 | always be a leaf window, and its buffer is selected by | |
101 | the top level editing loop at the end of each command. | |
102 | ||
103 | This value is always the same as | |
44fa5b1e | 104 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
105 | Lisp_Object selected_window; |
106 | ||
67492200 GM |
107 | /* A list of all windows for use by next_window and Fwindow_list. |
108 | Functions creating or deleting windows should invalidate this cache | |
109 | by setting it to nil. */ | |
67492200 GM |
110 | Lisp_Object Vwindow_list; |
111 | ||
5500c422 GM |
112 | /* The mini-buffer window of the selected frame. |
113 | Note that you cannot test for mini-bufferness of an arbitrary window | |
114 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 JB |
115 | the selected window. */ |
116 | Lisp_Object minibuf_window; | |
117 | ||
3f49fddc KS |
118 | /* Non-nil means it is the window whose mode line should be |
119 | shown as the selected window when the minibuffer is selected. */ | |
3dbab091 | 120 | Lisp_Object minibuf_selected_window; |
3f49fddc | 121 | |
a58ec57d | 122 | /* Hook run at end of temp_output_buffer_show. */ |
955cbe7b | 123 | static Lisp_Object Qtemp_buffer_show_hook; |
a58ec57d | 124 | |
5b03d3c0 RS |
125 | /* Nonzero after init_window_once has finished. */ |
126 | static int window_initialized; | |
127 | ||
543f5fb1 | 128 | /* Hook to run when window config changes. */ |
eeca6f6f | 129 | static Lisp_Object Qwindow_configuration_change_hook; |
0d384044 | 130 | |
66d43aea | 131 | /* Used by the function window_scroll_pixel_based */ |
c876b227 | 132 | static int window_scroll_pixel_based_preserve_x; |
66fe93d1 | 133 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 134 | |
c876b227 | 135 | /* Same for window_scroll_line_based. */ |
d311d28c PE |
136 | static EMACS_INT window_scroll_preserve_hpos; |
137 | static EMACS_INT window_scroll_preserve_vpos; | |
f230ecc9 | 138 | \f |
84575e67 PE |
139 | static void |
140 | CHECK_WINDOW_CONFIGURATION (Lisp_Object x) | |
141 | { | |
142 | CHECK_TYPE (WINDOW_CONFIGURATIONP (x), Qwindow_configuration_p, x); | |
143 | } | |
144 | ||
e8c17b81 | 145 | /* These setters are used only in this file, so they can be private. */ |
b0ab8123 | 146 | static void |
e8c17b81 PE |
147 | wset_combination_limit (struct window *w, Lisp_Object val) |
148 | { | |
149 | w->combination_limit = val; | |
150 | } | |
b0ab8123 | 151 | static void |
e8c17b81 PE |
152 | wset_dedicated (struct window *w, Lisp_Object val) |
153 | { | |
154 | w->dedicated = val; | |
155 | } | |
b0ab8123 | 156 | static void |
e8c17b81 PE |
157 | wset_display_table (struct window *w, Lisp_Object val) |
158 | { | |
159 | w->display_table = val; | |
160 | } | |
b0ab8123 | 161 | static void |
e8c17b81 PE |
162 | wset_new_normal (struct window *w, Lisp_Object val) |
163 | { | |
164 | w->new_normal = val; | |
165 | } | |
b0ab8123 | 166 | static void |
e8c17b81 PE |
167 | wset_new_total (struct window *w, Lisp_Object val) |
168 | { | |
169 | w->new_total = val; | |
170 | } | |
b0ab8123 | 171 | static void |
e8c17b81 PE |
172 | wset_normal_cols (struct window *w, Lisp_Object val) |
173 | { | |
174 | w->normal_cols = val; | |
175 | } | |
b0ab8123 | 176 | static void |
e8c17b81 PE |
177 | wset_normal_lines (struct window *w, Lisp_Object val) |
178 | { | |
179 | w->normal_lines = val; | |
180 | } | |
b0ab8123 | 181 | static void |
e8c17b81 PE |
182 | wset_parent (struct window *w, Lisp_Object val) |
183 | { | |
184 | w->parent = val; | |
185 | } | |
b0ab8123 | 186 | static void |
e8c17b81 PE |
187 | wset_pointm (struct window *w, Lisp_Object val) |
188 | { | |
189 | w->pointm = val; | |
190 | } | |
b0ab8123 | 191 | static void |
e8c17b81 PE |
192 | wset_start (struct window *w, Lisp_Object val) |
193 | { | |
194 | w->start = val; | |
195 | } | |
b0ab8123 | 196 | static void |
e8c17b81 PE |
197 | wset_temslot (struct window *w, Lisp_Object val) |
198 | { | |
199 | w->temslot = val; | |
200 | } | |
b0ab8123 | 201 | static void |
e8c17b81 PE |
202 | wset_vertical_scroll_bar_type (struct window *w, Lisp_Object val) |
203 | { | |
204 | w->vertical_scroll_bar_type = val; | |
205 | } | |
b0ab8123 | 206 | static void |
e8c17b81 PE |
207 | wset_window_parameters (struct window *w, Lisp_Object val) |
208 | { | |
209 | w->window_parameters = val; | |
210 | } | |
e74aeda8 DA |
211 | static void |
212 | wset_combination (struct window *w, bool horflag, Lisp_Object val) | |
213 | { | |
214 | /* Since leaf windows never becomes non-leaf, there should | |
215 | be no buffer and markers in start and pointm fields of W. */ | |
216 | eassert (!BUFFERP (w->contents) && NILP (w->start) && NILP (w->pointm)); | |
217 | w->contents = val; | |
218 | /* When an internal window is deleted and VAL is nil, HORFLAG | |
219 | is meaningless. */ | |
220 | if (!NILP (val)) | |
221 | w->horizontal = horflag; | |
222 | } | |
e8c17b81 | 223 | |
170da1ec DA |
224 | /* Nonzero if leaf window W doesn't reflect the actual state |
225 | of displayed buffer due to its text or overlays change. */ | |
226 | ||
227 | bool | |
228 | window_outdated (struct window *w) | |
229 | { | |
230 | struct buffer *b = XBUFFER (w->contents); | |
231 | return (w->last_modified < BUF_MODIFF (b) | |
232 | || w->last_overlay_modified < BUF_OVERLAY_MODIFF (b)); | |
233 | } | |
234 | ||
52162052 MR |
235 | struct window * |
236 | decode_live_window (register Lisp_Object window) | |
f230ecc9 MR |
237 | { |
238 | if (NILP (window)) | |
239 | return XWINDOW (selected_window); | |
c876b227 | 240 | |
f230ecc9 MR |
241 | CHECK_LIVE_WINDOW (window); |
242 | return XWINDOW (window); | |
243 | } | |
244 | ||
b9e9df47 | 245 | struct window * |
f230ecc9 MR |
246 | decode_any_window (register Lisp_Object window) |
247 | { | |
6e5d1c12 CY |
248 | struct window *w; |
249 | ||
f230ecc9 MR |
250 | if (NILP (window)) |
251 | return XWINDOW (selected_window); | |
252 | ||
253 | CHECK_WINDOW (window); | |
6e5d1c12 | 254 | w = XWINDOW (window); |
6e5d1c12 | 255 | return w; |
f230ecc9 | 256 | } |
666e158e | 257 | |
b52d6985 | 258 | static struct window * |
52162052 MR |
259 | decode_valid_window (register Lisp_Object window) |
260 | { | |
261 | struct window *w; | |
262 | ||
263 | if (NILP (window)) | |
264 | return XWINDOW (selected_window); | |
265 | ||
266 | CHECK_VALID_WINDOW (window); | |
267 | w = XWINDOW (window); | |
268 | return w; | |
269 | } | |
270 | ||
98a07056 DA |
271 | /* Called when W's buffer slot is changed. ARG -1 means that W is about to |
272 | cease its buffer, and 1 means that W is about to set up the new one. */ | |
273 | ||
274 | static void | |
275 | adjust_window_count (struct window *w, int arg) | |
276 | { | |
277 | eassert (eabs (arg) == 1); | |
e74aeda8 | 278 | if (BUFFERP (w->contents)) |
98a07056 | 279 | { |
e74aeda8 | 280 | struct buffer *b = XBUFFER (w->contents); |
3f781c75 | 281 | |
98a07056 DA |
282 | if (b->base_buffer) |
283 | b = b->base_buffer; | |
284 | b->window_count += arg; | |
285 | eassert (b->window_count >= 0); | |
422ff52b | 286 | /* These should be recalculated by redisplay code. */ |
9d93ce29 | 287 | w->window_end_valid = 0; |
422ff52b | 288 | w->base_line_pos = 0; |
98a07056 DA |
289 | } |
290 | } | |
291 | ||
292 | /* Set W's buffer slot to VAL and recompute number | |
293 | of windows showing VAL if it is a buffer. */ | |
294 | ||
295 | void | |
296 | wset_buffer (struct window *w, Lisp_Object val) | |
297 | { | |
298 | adjust_window_count (w, -1); | |
e74aeda8 DA |
299 | if (BUFFERP (val)) |
300 | /* Make sure that we do not assign the buffer | |
301 | to an internal window. */ | |
302 | eassert (MARKERP (w->start) && MARKERP (w->pointm)); | |
303 | w->contents = val; | |
98a07056 DA |
304 | adjust_window_count (w, 1); |
305 | } | |
306 | ||
7ab12479 | 307 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, |
f230ecc9 | 308 | doc: /* Return t if OBJECT is a window and nil otherwise. */) |
5842a27b | 309 | (Lisp_Object object) |
7ab12479 | 310 | { |
413430c5 | 311 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
312 | } |
313 | ||
52162052 MR |
314 | DEFUN ("window-valid-p", Fwindow_valid_p, Swindow_valid_p, 1, 1, 0, |
315 | doc: /* Return t if OBJECT is a valid window and nil otherwise. | |
316 | A valid window is either a window that displays a buffer or an internal | |
317 | window. Deleted windows are not live. */) | |
318 | (Lisp_Object object) | |
319 | { | |
320 | return WINDOW_VALID_P (object) ? Qt : Qnil; | |
321 | } | |
322 | ||
806b4d9b | 323 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
f230ecc9 | 324 | doc: /* Return t if OBJECT is a live window and nil otherwise. |
49745b39 CY |
325 | A live window is a window that displays a buffer. |
326 | Internal windows and deleted windows are not live. */) | |
5842a27b | 327 | (Lisp_Object object) |
605be8af | 328 | { |
9e571f49 | 329 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af | 330 | } |
727e958e MR |
331 | \f |
332 | /* Frames and windows. */ | |
89bc0592 | 333 | DEFUN ("window-frame", Fwindow_frame, Swindow_frame, 0, 1, 0, |
727e958e | 334 | doc: /* Return the frame that window WINDOW is on. |
52162052 | 335 | WINDOW must be a valid window and defaults to the selected one. */) |
727e958e MR |
336 | (Lisp_Object window) |
337 | { | |
52162052 | 338 | return decode_valid_window (window)->frame; |
727e958e MR |
339 | } |
340 | ||
341 | DEFUN ("frame-root-window", Fframe_root_window, Sframe_root_window, 0, 1, 0, | |
87e68db4 JB |
342 | doc: /* Return the root window of FRAME-OR-WINDOW. |
343 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
49745b39 CY |
344 | With a frame argument, return that frame's root window. |
345 | With a window argument, return the root window of that window's frame. */) | |
727e958e MR |
346 | (Lisp_Object frame_or_window) |
347 | { | |
348 | Lisp_Object window; | |
349 | ||
350 | if (NILP (frame_or_window)) | |
e69b0960 | 351 | window = SELECTED_FRAME ()->root_window; |
52162052 MR |
352 | else if (WINDOW_VALID_P (frame_or_window)) |
353 | window = XFRAME (XWINDOW (frame_or_window)->frame)->root_window; | |
727e958e MR |
354 | else |
355 | { | |
356 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 357 | window = XFRAME (frame_or_window)->root_window; |
727e958e MR |
358 | } |
359 | ||
360 | return window; | |
361 | } | |
362 | ||
363 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, | |
49745b39 CY |
364 | doc: /* Return the minibuffer window for frame FRAME. |
365 | If FRAME is omitted or nil, it defaults to the selected frame. */) | |
727e958e MR |
366 | (Lisp_Object frame) |
367 | { | |
d9f07150 | 368 | return FRAME_MINIBUF_WINDOW (decode_live_frame (frame)); |
727e958e MR |
369 | } |
370 | ||
371 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, | |
372 | Swindow_minibuffer_p, 0, 1, 0, | |
373 | doc: /* Return non-nil if WINDOW is a minibuffer window. | |
52162052 | 374 | WINDOW must be a valid window and defaults to the selected one. */) |
727e958e MR |
375 | (Lisp_Object window) |
376 | { | |
52162052 | 377 | return MINI_WINDOW_P (decode_valid_window (window)) ? Qt : Qnil; |
727e958e MR |
378 | } |
379 | ||
380 | /* Don't move this to window.el - this must be a safe routine. */ | |
381 | DEFUN ("frame-first-window", Fframe_first_window, Sframe_first_window, 0, 1, 0, | |
87e68db4 JB |
382 | doc: /* Return the topmost, leftmost live window on FRAME-OR-WINDOW. |
383 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
52162052 MR |
384 | Else if FRAME-OR-WINDOW denotes a valid window, return the first window |
385 | of that window's frame. If FRAME-OR-WINDOW denotes a live frame, return | |
727e958e MR |
386 | the first window of that frame. */) |
387 | (Lisp_Object frame_or_window) | |
388 | { | |
389 | Lisp_Object window; | |
390 | ||
391 | if (NILP (frame_or_window)) | |
e69b0960 | 392 | window = SELECTED_FRAME ()->root_window; |
52162052 | 393 | else if (WINDOW_VALID_P (frame_or_window)) |
e69b0960 | 394 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window; |
727e958e MR |
395 | else |
396 | { | |
397 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 398 | window = XFRAME (frame_or_window)->root_window; |
727e958e MR |
399 | } |
400 | ||
e74aeda8 DA |
401 | while (WINDOWP (XWINDOW (window)->contents)) |
402 | window = XWINDOW (window)->contents; | |
727e958e MR |
403 | |
404 | return window; | |
405 | } | |
406 | ||
407 | DEFUN ("frame-selected-window", Fframe_selected_window, | |
408 | Sframe_selected_window, 0, 1, 0, | |
87e68db4 JB |
409 | doc: /* Return the selected window of FRAME-OR-WINDOW. |
410 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
52162052 MR |
411 | Else if FRAME-OR-WINDOW denotes a valid window, return the selected |
412 | window of that window's frame. If FRAME-OR-WINDOW denotes a live frame, | |
413 | return the selected window of that frame. */) | |
727e958e MR |
414 | (Lisp_Object frame_or_window) |
415 | { | |
416 | Lisp_Object window; | |
417 | ||
418 | if (NILP (frame_or_window)) | |
e69b0960 | 419 | window = SELECTED_FRAME ()->selected_window; |
52162052 | 420 | else if (WINDOW_VALID_P (frame_or_window)) |
e69b0960 | 421 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->selected_window; |
727e958e MR |
422 | else |
423 | { | |
424 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 425 | window = XFRAME (frame_or_window)->selected_window; |
727e958e MR |
426 | } |
427 | ||
428 | return window; | |
429 | } | |
430 | ||
431 | DEFUN ("set-frame-selected-window", Fset_frame_selected_window, | |
432 | Sset_frame_selected_window, 2, 3, 0, | |
433 | doc: /* Set selected window of FRAME to WINDOW. | |
434 | FRAME must be a live frame and defaults to the selected one. If FRAME | |
435 | is the selected frame, this makes WINDOW the selected window. Optional | |
436 | argument NORECORD non-nil means to neither change the order of recently | |
437 | selected windows nor the buffer list. WINDOW must denote a live window. | |
438 | Return WINDOW. */) | |
439 | (Lisp_Object frame, Lisp_Object window, Lisp_Object norecord) | |
440 | { | |
441 | if (NILP (frame)) | |
442 | frame = selected_frame; | |
443 | ||
444 | CHECK_LIVE_FRAME (frame); | |
445 | CHECK_LIVE_WINDOW (window); | |
446 | ||
447 | if (! EQ (frame, WINDOW_FRAME (XWINDOW (window)))) | |
448 | error ("In `set-frame-selected-window', WINDOW is not on FRAME"); | |
449 | ||
450 | if (EQ (frame, selected_frame)) | |
451 | return Fselect_window (window, norecord); | |
452 | else | |
f00af5b1 PE |
453 | { |
454 | fset_selected_window (XFRAME (frame), window); | |
455 | return window; | |
456 | } | |
727e958e MR |
457 | } |
458 | ||
459 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
460 | doc: /* Return the selected window. | |
461 | The selected window is the window in which the standard cursor for | |
462 | selected windows appears and to which many commands apply. */) | |
463 | (void) | |
464 | { | |
465 | return selected_window; | |
466 | } | |
467 | ||
9397e56f MR |
468 | int window_select_count; |
469 | ||
727e958e MR |
470 | /* If select_window is called with inhibit_point_swap non-zero it will |
471 | not store point of the old selected window's buffer back into that | |
472 | window's pointm slot. This is needed by Fset_window_configuration to | |
473 | avoid that the display routine is called with selected_window set to | |
474 | Qnil causing a subsequent crash. */ | |
475 | static Lisp_Object | |
476 | select_window (Lisp_Object window, Lisp_Object norecord, int inhibit_point_swap) | |
477 | { | |
478 | register struct window *w; | |
727e958e MR |
479 | struct frame *sf; |
480 | ||
481 | CHECK_LIVE_WINDOW (window); | |
482 | ||
483 | w = XWINDOW (window); | |
727e958e | 484 | |
734fbd86 | 485 | /* Make the selected window's buffer current. */ |
e74aeda8 | 486 | Fset_buffer (w->contents); |
734fbd86 | 487 | |
727e958e | 488 | if (EQ (window, selected_window) && !inhibit_point_swap) |
562c6ee9 SM |
489 | /* `switch-to-buffer' uses (select-window (selected-window)) as a "clever" |
490 | way to call record_buffer from Elisp, so it's important that we call | |
491 | record_buffer before returning here. */ | |
492 | goto record_and_return; | |
727e958e MR |
493 | |
494 | sf = SELECTED_FRAME (); | |
495 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
496 | { | |
f00af5b1 | 497 | fset_selected_window (XFRAME (WINDOW_FRAME (w)), window); |
727e958e MR |
498 | /* Use this rather than Fhandle_switch_frame |
499 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
500 | move around in the state where a minibuffer in a separate | |
501 | frame is active. */ | |
502 | Fselect_frame (WINDOW_FRAME (w), norecord); | |
503 | /* Fselect_frame called us back so we've done all the work already. */ | |
504 | eassert (EQ (window, selected_window)); | |
505 | return window; | |
506 | } | |
507 | else | |
f00af5b1 | 508 | fset_selected_window (sf, window); |
727e958e | 509 | |
1e101a4b | 510 | select_window_1 (window, inhibit_point_swap); |
562c6ee9 SM |
511 | bset_last_selected_window (XBUFFER (w->contents), window); |
512 | windows_or_buffers_changed++; | |
1e101a4b | 513 | |
562c6ee9 | 514 | record_and_return: |
7ffe7ef6 SM |
515 | /* record_buffer can run QUIT, so make sure it is run only after we have |
516 | re-established the invariant between selected_window and selected_frame, | |
517 | otherwise the temporary broken invariant might "escape" (bug#14161). */ | |
518 | if (NILP (norecord)) | |
519 | { | |
520 | w->use_time = ++window_select_count; | |
521 | record_buffer (w->contents); | |
522 | } | |
523 | ||
1e101a4b SM |
524 | return window; |
525 | } | |
526 | ||
527 | /* Select window with a minimum of fuss, i.e. don't record the change anywhere | |
3f781c75 | 528 | (not even for redisplay's benefit), and assume that the window's frame is |
1e101a4b | 529 | already selected. */ |
12384b01 | 530 | static void |
1e101a4b SM |
531 | select_window_1 (Lisp_Object window, bool inhibit_point_swap) |
532 | { | |
734fbd86 MR |
533 | /* Store the old selected window's buffer's point in pointm of the old |
534 | selected window. It belongs to that window, and when the window is | |
535 | not selected, must be in the window. */ | |
727e958e MR |
536 | if (!inhibit_point_swap) |
537 | { | |
1e101a4b | 538 | struct window *ow = XWINDOW (selected_window); |
e74aeda8 DA |
539 | if (BUFFERP (ow->contents)) |
540 | set_marker_both (ow->pointm, ow->contents, | |
541 | BUF_PT (XBUFFER (ow->contents)), | |
542 | BUF_PT_BYTE (XBUFFER (ow->contents))); | |
727e958e MR |
543 | } |
544 | ||
545 | selected_window = window; | |
727e958e MR |
546 | |
547 | /* Go to the point recorded in the window. | |
548 | This is important when the buffer is in more | |
549 | than one window. It also matters when | |
550 | redisplay_window has altered point after scrolling, | |
551 | because it makes the change only in the window. */ | |
032f7451 | 552 | set_point_from_marker (XWINDOW (window)->pointm); |
727e958e MR |
553 | } |
554 | ||
555 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, | |
94900bfe MR |
556 | doc: /* Select WINDOW which must be a live window. |
557 | Also make WINDOW's frame the selected frame and WINDOW that frame's | |
558 | selected window. In addition, make WINDOW's buffer current and set that | |
559 | buffer's value of `point' to the value of WINDOW's `window-point'. | |
560 | Return WINDOW. | |
727e958e MR |
561 | |
562 | Optional second arg NORECORD non-nil means do not put this buffer at the | |
563 | front of the buffer list and do not make this window the most recently | |
564 | selected one. | |
605be8af | 565 | |
727e958e MR |
566 | Note that the main editor command loop sets the current buffer to the |
567 | buffer of the selected window before each command. */) | |
568 | (register Lisp_Object window, Lisp_Object norecord) | |
569 | { | |
570 | return select_window (window, norecord, 0); | |
571 | } | |
572 | \f | |
bf60a96b | 573 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
49745b39 CY |
574 | doc: /* Return the buffer displayed in window WINDOW. |
575 | If WINDOW is omitted or nil, it defaults to the selected window. | |
576 | Return nil for an internal window or a deleted window. */) | |
bf60a96b MR |
577 | (Lisp_Object window) |
578 | { | |
e74aeda8 DA |
579 | struct window *w = decode_any_window (window); |
580 | return WINDOW_LEAF_P (w) ? w->contents : Qnil; | |
bf60a96b MR |
581 | } |
582 | ||
583 | DEFUN ("window-parent", Fwindow_parent, Swindow_parent, 0, 1, 0, | |
49745b39 | 584 | doc: /* Return the parent window of window WINDOW. |
52162052 | 585 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 | 586 | Return nil for a window with no parent (e.g. a root window). */) |
bf60a96b MR |
587 | (Lisp_Object window) |
588 | { | |
52162052 | 589 | return decode_valid_window (window)->parent; |
bf60a96b MR |
590 | } |
591 | ||
89bc0592 | 592 | DEFUN ("window-top-child", Fwindow_top_child, Swindow_top_child, 0, 1, 0, |
49745b39 | 593 | doc: /* Return the topmost child window of window WINDOW. |
52162052 | 594 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 CY |
595 | Return nil if WINDOW is a live window (live windows have no children). |
596 | Return nil if WINDOW is an internal window whose children form a | |
597 | horizontal combination. */) | |
bf60a96b MR |
598 | (Lisp_Object window) |
599 | { | |
e74aeda8 DA |
600 | struct window *w = decode_valid_window (window); |
601 | return WINDOW_VERTICAL_COMBINATION_P (w) ? w->contents : Qnil; | |
bf60a96b MR |
602 | } |
603 | ||
89bc0592 | 604 | DEFUN ("window-left-child", Fwindow_left_child, Swindow_left_child, 0, 1, 0, |
49745b39 | 605 | doc: /* Return the leftmost 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 | vertical combination. */) | |
bf60a96b MR |
610 | (Lisp_Object window) |
611 | { | |
e74aeda8 DA |
612 | struct window *w = decode_valid_window (window); |
613 | return WINDOW_HORIZONTAL_COMBINATION_P (w) ? w->contents : Qnil; | |
bf60a96b MR |
614 | } |
615 | ||
d68443dc | 616 | DEFUN ("window-next-sibling", Fwindow_next_sibling, Swindow_next_sibling, 0, 1, 0, |
49745b39 | 617 | doc: /* Return the next sibling window of window WINDOW. |
52162052 | 618 | WINDOW must be a valid window and defaults to the selected one. |
d68443dc | 619 | Return nil if WINDOW has no next sibling. */) |
bf60a96b MR |
620 | (Lisp_Object window) |
621 | { | |
52162052 | 622 | return decode_valid_window (window)->next; |
bf60a96b MR |
623 | } |
624 | ||
d68443dc | 625 | DEFUN ("window-prev-sibling", Fwindow_prev_sibling, Swindow_prev_sibling, 0, 1, 0, |
49745b39 | 626 | doc: /* Return the previous sibling window of window WINDOW. |
52162052 | 627 | WINDOW must be a valid window and defaults to the selected one. |
d68443dc | 628 | Return nil if WINDOW has no previous sibling. */) |
bf60a96b MR |
629 | (Lisp_Object window) |
630 | { | |
52162052 | 631 | return decode_valid_window (window)->prev; |
bf60a96b | 632 | } |
67492200 | 633 | |
72f94d4b | 634 | DEFUN ("window-combination-limit", Fwindow_combination_limit, Swindow_combination_limit, 1, 1, 0, |
b6f67890 | 635 | doc: /* Return combination limit of window WINDOW. |
095d384d | 636 | WINDOW must be a valid window used in horizontal or vertical combination. |
be7f5545 | 637 | If the return value is nil, child windows of WINDOW can be recombined with |
b6f67890 | 638 | WINDOW's siblings. A return value of t means that child windows of |
095d384d | 639 | WINDOW are never \(re-)combined with WINDOW's siblings. */) |
496e208e | 640 | (Lisp_Object window) |
7ab12479 | 641 | { |
095d384d DA |
642 | struct window *w; |
643 | ||
72f94d4b | 644 | CHECK_VALID_WINDOW (window); |
095d384d | 645 | w = XWINDOW (window); |
e74aeda8 | 646 | if (WINDOW_LEAF_P (w)) |
095d384d | 647 | error ("Combination limit is meaningful for internal windows only"); |
e74aeda8 | 648 | return w->combination_limit; |
7ab12479 | 649 | } |
53bb6b99 | 650 | |
b6f67890 | 651 | DEFUN ("set-window-combination-limit", Fset_window_combination_limit, Sset_window_combination_limit, 2, 2, 0, |
d2999b1a | 652 | doc: /* Set combination limit of window WINDOW to LIMIT; return LIMIT. |
095d384d | 653 | WINDOW must be a valid window used in horizontal or vertical combination. |
8e17c9ba MR |
654 | If LIMIT is nil, child windows of WINDOW can be recombined with WINDOW's |
655 | siblings. LIMIT t means that child windows of WINDOW are never | |
656 | \(re-)combined with WINDOW's siblings. Other values are reserved for | |
095d384d | 657 | future use. */) |
d2999b1a | 658 | (Lisp_Object window, Lisp_Object limit) |
b3a10345 | 659 | { |
095d384d DA |
660 | struct window *w; |
661 | ||
662 | CHECK_VALID_WINDOW (window); | |
663 | w = XWINDOW (window); | |
e74aeda8 | 664 | if (WINDOW_LEAF_P (w)) |
095d384d DA |
665 | error ("Combination limit is meaningful for internal windows only"); |
666 | wset_combination_limit (w, limit); | |
e8c17b81 | 667 | return limit; |
496e208e | 668 | } |
7bbc67d2 | 669 | |
496e208e | 670 | DEFUN ("window-use-time", Fwindow_use_time, Swindow_use_time, 0, 1, 0, |
49745b39 | 671 | doc: /* Return the use time of window WINDOW. |
52162052 | 672 | WINDOW must be a live window and defaults to the selected one. |
49745b39 CY |
673 | The window with the highest use time is the most recently selected |
674 | one. The window with the lowest use time is the least recently | |
675 | selected one. */) | |
496e208e MR |
676 | (Lisp_Object window) |
677 | { | |
52162052 | 678 | return make_number (decode_live_window (window)->use_time); |
496e208e | 679 | } |
abde8f8c | 680 | \f |
105216ed CY |
681 | DEFUN ("window-total-height", Fwindow_total_height, Swindow_total_height, 0, 1, 0, |
682 | doc: /* Return the total height, in lines, of window WINDOW. | |
52162052 | 683 | WINDOW must be a valid window and defaults to the selected one. |
b3a10345 | 684 | |
105216ed CY |
685 | The return value includes the mode line and header line, if any. |
686 | If WINDOW is an internal window, the total height is the height | |
687 | of the screen areas spanned by its children. | |
536833ab | 688 | |
105216ed CY |
689 | On a graphical display, this total height is reported as an |
690 | integer multiple of the default character height. */) | |
691 | (Lisp_Object window) | |
496e208e | 692 | { |
5f24fa51 | 693 | return make_number (decode_valid_window (window)->total_lines); |
105216ed | 694 | } |
536833ab | 695 | |
105216ed CY |
696 | DEFUN ("window-total-width", Fwindow_total_width, Swindow_total_width, 0, 1, 0, |
697 | doc: /* Return the total width, in columns, of window WINDOW. | |
52162052 | 698 | WINDOW must be a valid window and defaults to the selected one. |
b3a10345 | 699 | |
105216ed CY |
700 | The return value includes any vertical dividers or scroll bars |
701 | belonging to WINDOW. If WINDOW is an internal window, the total width | |
702 | is the width of the screen areas spanned by its children. | |
b3a10345 | 703 | |
105216ed CY |
704 | On a graphical display, this total width is reported as an |
705 | integer multiple of the default character width. */) | |
496e208e MR |
706 | (Lisp_Object window) |
707 | { | |
5f24fa51 | 708 | return make_number (decode_valid_window (window)->total_cols); |
abde8f8c | 709 | } |
b3a10345 | 710 | |
496e208e | 711 | DEFUN ("window-new-total", Fwindow_new_total, Swindow_new_total, 0, 1, 0, |
49745b39 | 712 | doc: /* Return the new total size of window WINDOW. |
52162052 | 713 | WINDOW must be a valid window and defaults to the selected one. */) |
496e208e MR |
714 | (Lisp_Object window) |
715 | { | |
52162052 | 716 | return decode_valid_window (window)->new_total; |
496e208e MR |
717 | } |
718 | ||
719 | DEFUN ("window-normal-size", Fwindow_normal_size, Swindow_normal_size, 0, 2, 0, | |
49745b39 | 720 | doc: /* Return the normal height of window WINDOW. |
52162052 | 721 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 | 722 | If HORIZONTAL is non-nil, return the normal width of WINDOW. */) |
496e208e MR |
723 | (Lisp_Object window, Lisp_Object horizontal) |
724 | { | |
52162052 | 725 | struct window *w = decode_valid_window (window); |
d3d50620 DA |
726 | |
727 | return NILP (horizontal) ? w->normal_lines : w->normal_cols; | |
496e208e MR |
728 | } |
729 | ||
730 | DEFUN ("window-new-normal", Fwindow_new_normal, Swindow_new_normal, 0, 1, 0, | |
49745b39 | 731 | doc: /* Return new normal size of window WINDOW. |
52162052 | 732 | WINDOW must be a valid window and defaults to the selected one. */) |
496e208e MR |
733 | (Lisp_Object window) |
734 | { | |
52162052 | 735 | return decode_valid_window (window)->new_normal; |
496e208e MR |
736 | } |
737 | ||
abde8f8c | 738 | DEFUN ("window-left-column", Fwindow_left_column, Swindow_left_column, 0, 1, 0, |
49745b39 | 739 | doc: /* Return left column of window WINDOW. |
105216ed CY |
740 | This is the distance, in columns, between the left edge of WINDOW and |
741 | the left edge of the frame's window area. For instance, the return | |
742 | value is 0 if there is no window to the left of WINDOW. | |
743 | ||
52162052 | 744 | WINDOW must be a valid window and defaults to the selected one. */) |
abde8f8c MR |
745 | (Lisp_Object window) |
746 | { | |
5f24fa51 | 747 | return make_number (decode_valid_window (window)->left_col); |
abde8f8c MR |
748 | } |
749 | ||
750 | DEFUN ("window-top-line", Fwindow_top_line, Swindow_top_line, 0, 1, 0, | |
49745b39 | 751 | doc: /* Return top line of window WINDOW. |
105216ed CY |
752 | This is the distance, in lines, between the top of WINDOW and the top |
753 | of the frame's window area. For instance, the return value is 0 if | |
754 | there is no window above WINDOW. | |
755 | ||
52162052 | 756 | WINDOW must be a valid window and defaults to the selected one. */) |
abde8f8c MR |
757 | (Lisp_Object window) |
758 | { | |
5f24fa51 | 759 | return make_number (decode_valid_window (window)->top_line); |
abde8f8c MR |
760 | } |
761 | ||
762 | /* Return the number of lines of W's body. Don't count any mode or | |
763 | header line of W. */ | |
764 | ||
46a4ce9e | 765 | static int |
abde8f8c MR |
766 | window_body_lines (struct window *w) |
767 | { | |
5f24fa51 | 768 | int height = w->total_lines; |
abde8f8c MR |
769 | |
770 | if (!MINI_WINDOW_P (w)) | |
771 | { | |
772 | if (WINDOW_WANTS_MODELINE_P (w)) | |
773 | --height; | |
774 | if (WINDOW_WANTS_HEADER_LINE_P (w)) | |
775 | --height; | |
776 | } | |
777 | ||
778 | return height; | |
779 | } | |
780 | ||
781 | /* Return the number of columns of W's body. Don't count columns | |
782 | occupied by the scroll bar or the vertical bar separating W from its | |
783 | right sibling. On window-systems don't count fringes or display | |
784 | margins either. */ | |
785 | ||
786 | int | |
787 | window_body_cols (struct window *w) | |
788 | { | |
789 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
5f24fa51 | 790 | int width = w->total_cols; |
abde8f8c MR |
791 | |
792 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) | |
793 | /* Scroll bars occupy a few columns. */ | |
794 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); | |
795 | else if (!FRAME_WINDOW_P (f) | |
796 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
797 | /* The column of `|' characters separating side-by-side windows | |
798 | occupies one column only. */ | |
799 | width -= 1; | |
800 | ||
f1665bdc EZ |
801 | /* Display margins cannot be used for normal text. */ |
802 | width -= WINDOW_LEFT_MARGIN_COLS (w) + WINDOW_RIGHT_MARGIN_COLS (w); | |
803 | ||
abde8f8c | 804 | if (FRAME_WINDOW_P (f)) |
f1665bdc EZ |
805 | /* On window-systems, fringes cannot be used for normal text. */ |
806 | width -= WINDOW_FRINGE_COLS (w); | |
abde8f8c MR |
807 | |
808 | return width; | |
809 | } | |
810 | ||
105216ed CY |
811 | DEFUN ("window-body-height", Fwindow_body_height, Swindow_body_height, 0, 1, 0, |
812 | doc: /* Return the height, in lines, of WINDOW's text area. | |
52162052 | 813 | WINDOW must be a live window and defaults to the selected one. |
89bd5ee1 | 814 | |
105216ed CY |
815 | The returned height does not include the mode line or header line. |
816 | On a graphical display, the height is expressed as an integer multiple | |
817 | of the default character height. If a line at the bottom of the text | |
818 | area is only partially visible, that counts as a whole line; to | |
819 | exclude partially-visible lines, use `window-text-height'. */) | |
820 | (Lisp_Object window) | |
abde8f8c | 821 | { |
b6a9e8b1 | 822 | return make_number (window_body_lines (decode_live_window (window))); |
105216ed | 823 | } |
abde8f8c | 824 | |
105216ed CY |
825 | DEFUN ("window-body-width", Fwindow_body_width, Swindow_body_width, 0, 1, 0, |
826 | doc: /* Return the width, in columns, of WINDOW's text area. | |
52162052 | 827 | WINDOW must be a live window and defaults to the selected one. |
105216ed CY |
828 | |
829 | The return value does not include any vertical dividers, fringe or | |
830 | marginal areas, or scroll bars. On a graphical display, the width is | |
831 | expressed as an integer multiple of the default character width. */) | |
832 | (Lisp_Object window) | |
833 | { | |
b6a9e8b1 | 834 | return make_number (window_body_cols (decode_live_window (window))); |
abde8f8c | 835 | } |
536833ab | 836 | |
7ab12479 | 837 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 | 838 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
496e208e | 839 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 840 | (Lisp_Object window) |
7ab12479 | 841 | { |
52162052 | 842 | return make_number (decode_live_window (window)->hscroll); |
7ab12479 JB |
843 | } |
844 | ||
24a212eb PE |
845 | /* Set W's horizontal scroll amount to HSCROLL clipped to a reasonable |
846 | range, returning the new amount as a fixnum. */ | |
847 | static Lisp_Object | |
848 | set_window_hscroll (struct window *w, EMACS_INT hscroll) | |
849 | { | |
4e71fd89 PE |
850 | /* Horizontal scrolling has problems with large scroll amounts. |
851 | It's too slow with long lines, and even with small lines the | |
852 | display can be messed up. For now, though, impose only the limits | |
853 | required by the internal representation: horizontal scrolling must | |
854 | fit in fixnum (since it's visible to Elisp) and into ptrdiff_t | |
855 | (since it's stored in a ptrdiff_t). */ | |
856 | ptrdiff_t hscroll_max = min (MOST_POSITIVE_FIXNUM, PTRDIFF_MAX); | |
857 | ptrdiff_t new_hscroll = clip_to_bounds (0, hscroll, hscroll_max); | |
24a212eb PE |
858 | |
859 | /* Prevent redisplay shortcuts when changing the hscroll. */ | |
860 | if (w->hscroll != new_hscroll) | |
e74aeda8 | 861 | XBUFFER (w->contents)->prevent_redisplay_optimizations_p = 1; |
24a212eb PE |
862 | |
863 | w->hscroll = new_hscroll; | |
864 | return make_number (new_hscroll); | |
865 | } | |
866 | ||
7ab12479 | 867 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, |
fdb82f93 | 868 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
52162052 | 869 | WINDOW must be a live window and defaults to the selected one. |
24a212eb PE |
870 | Clip the number to a reasonable value if out of range. |
871 | Return the new number. NCOL should be zero or positive. | |
ebadb1e4 EZ |
872 | |
873 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 874 | window so that the location of point moves off-window. */) |
5842a27b | 875 | (Lisp_Object window, Lisp_Object ncol) |
7ab12479 | 876 | { |
b7826503 | 877 | CHECK_NUMBER (ncol); |
89bc0592 | 878 | return set_window_hscroll (decode_live_window (window), XINT (ncol)); |
7ab12479 JB |
879 | } |
880 | ||
190eb263 RS |
881 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
882 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 883 | doc: /* Return WINDOW's redisplay end trigger value. |
52162052 | 884 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 885 | See `set-window-redisplay-end-trigger' for more information. */) |
5842a27b | 886 | (Lisp_Object window) |
190eb263 | 887 | { |
52162052 | 888 | return decode_live_window (window)->redisplay_end_trigger; |
190eb263 RS |
889 | } |
890 | ||
891 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
892 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 | 893 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
52162052 MR |
894 | WINDOW must be a live window and defaults to the selected one. VALUE |
895 | should be a buffer position (typically a marker) or nil. If it is a | |
896 | buffer position, then if redisplay in WINDOW reaches a position beyond | |
897 | VALUE, the functions in `redisplay-end-trigger-functions' are called | |
898 | with two arguments: WINDOW, and the end trigger value. Afterwards the | |
899 | end-trigger value is reset to nil. */) | |
5842a27b | 900 | (register Lisp_Object window, Lisp_Object value) |
190eb263 | 901 | { |
e8c17b81 PE |
902 | wset_redisplay_end_trigger (decode_live_window (window), value); |
903 | return value; | |
190eb263 RS |
904 | } |
905 | ||
7ab12479 | 906 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 | 907 | doc: /* Return a list of the edge coordinates of WINDOW. |
52162052 MR |
908 | WINDOW must be a valid window and defaults to the selected one. |
909 | ||
910 | The returned list has the form (LEFT TOP RIGHT BOTTOM). TOP and BOTTOM | |
911 | count by lines, and LEFT and RIGHT count by columns, all relative to 0, | |
912 | 0 at top left corner of frame. | |
913 | ||
914 | RIGHT is one more than the rightmost column occupied by WINDOW. BOTTOM | |
915 | is one more than the bottommost row occupied by WINDOW. The edges | |
916 | include the space used by WINDOW's scroll bar, display margins, fringes, | |
917 | header line, and/or mode line. For the edges of just the text area, use | |
918 | `window-inside-edges'. */) | |
5842a27b | 919 | (Lisp_Object window) |
7ab12479 | 920 | { |
52162052 | 921 | register struct window *w = decode_valid_window (window); |
7ab12479 | 922 | |
1479c557 PE |
923 | return list4i (WINDOW_LEFT_EDGE_COL (w), WINDOW_TOP_EDGE_LINE (w), |
924 | WINDOW_RIGHT_EDGE_COL (w), WINDOW_BOTTOM_EDGE_LINE (w)); | |
7ab12479 JB |
925 | } |
926 | ||
c99a9eb3 RS |
927 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
928 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
52162052 MR |
929 | WINDOW must be a valid window and defaults to the selected one. |
930 | ||
931 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
932 | 0, 0 at the top left corner of the frame. | |
b35ac83e CY |
933 | |
934 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
935 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
936 | The pixel edges include the space used by WINDOW's scroll bar, display | |
937 | margins, fringes, header line, and/or mode line. For the pixel edges | |
938 | of just the text area, use `window-inside-pixel-edges'. */) | |
5842a27b | 939 | (Lisp_Object window) |
c99a9eb3 | 940 | { |
52162052 | 941 | register struct window *w = decode_valid_window (window); |
c99a9eb3 | 942 | |
1479c557 PE |
943 | return list4i (WINDOW_LEFT_EDGE_X (w), WINDOW_TOP_EDGE_Y (w), |
944 | WINDOW_RIGHT_EDGE_X (w), WINDOW_BOTTOM_EDGE_Y (w)); | |
c99a9eb3 RS |
945 | } |
946 | ||
9d5405ec | 947 | static void |
5e617bc2 | 948 | calc_absolute_offset (struct window *w, int *add_x, int *add_y) |
9d5405ec | 949 | { |
d3d50620 | 950 | struct frame *f = XFRAME (w->frame); |
9d5405ec J |
951 | *add_y = f->top_pos; |
952 | #ifdef FRAME_MENUBAR_HEIGHT | |
953 | *add_y += FRAME_MENUBAR_HEIGHT (f); | |
954 | #endif | |
bfeabdc3 JD |
955 | #ifdef FRAME_TOOLBAR_TOP_HEIGHT |
956 | *add_y += FRAME_TOOLBAR_TOP_HEIGHT (f); | |
957 | #elif FRAME_TOOLBAR_HEIGHT | |
9d5405ec J |
958 | *add_y += FRAME_TOOLBAR_HEIGHT (f); |
959 | #endif | |
960 | #ifdef FRAME_NS_TITLEBAR_HEIGHT | |
961 | *add_y += FRAME_NS_TITLEBAR_HEIGHT (f); | |
962 | #endif | |
963 | *add_x = f->left_pos; | |
bfeabdc3 JD |
964 | #ifdef FRAME_TOOLBAR_LEFT_WIDTH |
965 | *add_x += FRAME_TOOLBAR_LEFT_WIDTH (f); | |
966 | #endif | |
9d5405ec J |
967 | } |
968 | ||
969 | DEFUN ("window-absolute-pixel-edges", Fwindow_absolute_pixel_edges, | |
970 | Swindow_absolute_pixel_edges, 0, 1, 0, | |
971 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
52162052 MR |
972 | WINDOW must be a valid window and defaults to the selected one. |
973 | ||
974 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
975 | 0, 0 at the top left corner of the display. | |
9d5405ec J |
976 | |
977 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
978 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
979 | The pixel edges include the space used by WINDOW's scroll bar, display | |
980 | margins, fringes, header line, and/or mode line. For the pixel edges | |
c49d071a | 981 | of just the text area, use `window-inside-absolute-pixel-edges'. */) |
5842a27b | 982 | (Lisp_Object window) |
9d5405ec | 983 | { |
52162052 | 984 | register struct window *w = decode_valid_window (window); |
9d5405ec | 985 | int add_x, add_y; |
89bc0592 | 986 | |
ed3751c8 | 987 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec | 988 | |
1479c557 PE |
989 | return list4i (WINDOW_LEFT_EDGE_X (w) + add_x, |
990 | WINDOW_TOP_EDGE_Y (w) + add_y, | |
991 | WINDOW_RIGHT_EDGE_X (w) + add_x, | |
992 | WINDOW_BOTTOM_EDGE_Y (w) + add_y); | |
9d5405ec J |
993 | } |
994 | ||
c99a9eb3 RS |
995 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, |
996 | doc: /* Return a list of the edge coordinates of WINDOW. | |
52162052 MR |
997 | WINDOW must be a live window and defaults to the selected one. |
998 | ||
999 | The returned list has the form (LEFT TOP RIGHT BOTTOM). TOP and BOTTOM | |
1000 | count by lines, and LEFT and RIGHT count by columns, all relative to 0, | |
1001 | 0 at top left corner of frame. | |
b35ac83e CY |
1002 | |
1003 | RIGHT is one more than the rightmost column of WINDOW's text area. | |
52162052 MR |
1004 | BOTTOM is one more than the bottommost row of WINDOW's text area. The |
1005 | inside edges do not include the space used by the WINDOW's scroll bar, | |
1006 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 1007 | (Lisp_Object window) |
c99a9eb3 | 1008 | { |
52162052 | 1009 | register struct window *w = decode_live_window (window); |
c99a9eb3 | 1010 | |
1479c557 PE |
1011 | return list4i ((WINDOW_BOX_LEFT_EDGE_COL (w) |
1012 | + WINDOW_LEFT_MARGIN_COLS (w) | |
1013 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
1014 | (WINDOW_TOP_EDGE_LINE (w) | |
1015 | + WINDOW_HEADER_LINE_LINES (w)), | |
1016 | (WINDOW_BOX_RIGHT_EDGE_COL (w) | |
1017 | - WINDOW_RIGHT_MARGIN_COLS (w) | |
1018 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
1019 | (WINDOW_BOTTOM_EDGE_LINE (w) | |
1020 | - WINDOW_MODE_LINE_LINES (w))); | |
c99a9eb3 RS |
1021 | } |
1022 | ||
1023 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
2fbdc249 | 1024 | doc: /* Return a list of the edge pixel coordinates of WINDOW's text area. |
52162052 MR |
1025 | WINDOW must be a live window and defaults to the selected one. |
1026 | ||
1027 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
1028 | (0,0) at the top left corner of the frame's window area. | |
b35ac83e CY |
1029 | |
1030 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
1031 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
1032 | The inside edges do not include the space used by WINDOW's scroll bar, | |
c99a9eb3 | 1033 | display margins, fringes, header line, and/or mode line. */) |
5842a27b | 1034 | (Lisp_Object window) |
c99a9eb3 | 1035 | { |
52162052 | 1036 | register struct window *w = decode_live_window (window); |
c99a9eb3 | 1037 | |
1479c557 PE |
1038 | return list4i ((WINDOW_BOX_LEFT_EDGE_X (w) |
1039 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
1040 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
1041 | (WINDOW_TOP_EDGE_Y (w) | |
1042 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
1043 | (WINDOW_BOX_RIGHT_EDGE_X (w) | |
1044 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
1045 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
1046 | (WINDOW_BOTTOM_EDGE_Y (w) | |
1047 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
c99a9eb3 RS |
1048 | } |
1049 | ||
9d5405ec J |
1050 | DEFUN ("window-inside-absolute-pixel-edges", |
1051 | Fwindow_inside_absolute_pixel_edges, | |
1052 | Swindow_inside_absolute_pixel_edges, 0, 1, 0, | |
2fbdc249 | 1053 | doc: /* Return a list of the edge pixel coordinates of WINDOW's text area. |
52162052 MR |
1054 | WINDOW must be a live window and defaults to the selected one. |
1055 | ||
1056 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
1057 | (0,0) at the top left corner of the frame's window area. | |
9d5405ec J |
1058 | |
1059 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
1060 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
1061 | The inside edges do not include the space used by WINDOW's scroll bar, | |
1062 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 1063 | (Lisp_Object window) |
9d5405ec | 1064 | { |
52162052 | 1065 | register struct window *w = decode_live_window (window); |
9d5405ec | 1066 | int add_x, add_y; |
89bc0592 | 1067 | |
ed3751c8 | 1068 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec | 1069 | |
1479c557 PE |
1070 | return list4i ((WINDOW_BOX_LEFT_EDGE_X (w) |
1071 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
1072 | + WINDOW_LEFT_FRINGE_WIDTH (w) + add_x), | |
1073 | (WINDOW_TOP_EDGE_Y (w) | |
1074 | + WINDOW_HEADER_LINE_HEIGHT (w) + add_y), | |
1075 | (WINDOW_BOX_RIGHT_EDGE_X (w) | |
1076 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
1077 | - WINDOW_RIGHT_FRINGE_WIDTH (w) + add_x), | |
1078 | (WINDOW_BOTTOM_EDGE_Y (w) | |
1079 | - WINDOW_MODE_LINE_HEIGHT (w) + add_y)); | |
9d5405ec J |
1080 | } |
1081 | ||
9173a8fb | 1082 | /* Test if the character at column X, row Y is within window W. |
341f3858 | 1083 | If it is not, return ON_NOTHING; |
9173a8fb | 1084 | if it is in the window's text area, return ON_TEXT; |
341f3858 | 1085 | if it is on the window's modeline, return ON_MODE_LINE; |
d5783c40 | 1086 | if it is on the border between the window and its right sibling, |
341f3858 | 1087 | return ON_VERTICAL_BORDER. |
9173a8fb | 1088 | if it is on a scroll bar, return ON_SCROLL_BAR. |
341f3858 | 1089 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 1090 | if it is in left or right fringe of the window, |
9173a8fb | 1091 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE; |
49b996e7 | 1092 | if it is in the marginal area to the left/right of the window, |
9173a8fb | 1093 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN. |
5500c422 GM |
1094 | |
1095 | X and Y are frame relative pixel coordinates. */ | |
1096 | ||
7442878f | 1097 | static enum window_part |
9173a8fb | 1098 | coordinates_in_window (register struct window *w, int x, int y) |
d5783c40 | 1099 | { |
b0228ace | 1100 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
7442878f | 1101 | enum window_part part; |
949cf20f | 1102 | int ux = FRAME_COLUMN_WIDTH (f); |
c7b08b0d MR |
1103 | int left_x = WINDOW_LEFT_EDGE_X (w); |
1104 | int right_x = WINDOW_RIGHT_EDGE_X (w); | |
1105 | int top_y = WINDOW_TOP_EDGE_Y (w); | |
1106 | int bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
dad75588 GM |
1107 | /* The width of the area where the vertical line can be dragged. |
1108 | (Between mode lines for instance. */ | |
1109 | int grabbable_width = ux; | |
949cf20f | 1110 | int lmargin_width, rmargin_width, text_left, text_right; |
9173a8fb | 1111 | |
c7b08b0d MR |
1112 | /* Outside any interesting row or column? */ |
1113 | if (y < top_y || y >= bottom_y || x < left_x || x >= right_x) | |
9173a8fb | 1114 | return ON_NOTHING; |
b0228ace | 1115 | |
c7b08b0d MR |
1116 | /* On the mode line or header line? */ |
1117 | if ((WINDOW_WANTS_MODELINE_P (w) | |
1118 | && y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w) | |
1119 | && (part = ON_MODE_LINE)) | |
1120 | || (WINDOW_WANTS_HEADER_LINE_P (w) | |
1121 | && y < top_y + CURRENT_HEADER_LINE_HEIGHT (w) | |
1122 | && (part = ON_HEADER_LINE))) | |
1123 | { | |
1124 | /* If it's under/over the scroll bar portion of the mode/header | |
1125 | line, say it's on the vertical line. That's to be able to | |
1126 | resize windows horizontally in case we're using toolkit scroll | |
1127 | bars. Note: If scrollbars are on the left, the window that | |
1128 | must be eventually resized is that on the left of WINDOW. */ | |
1129 | if ((WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) | |
1130 | && !WINDOW_LEFTMOST_P (w) | |
1131 | && eabs (x - left_x) < grabbable_width) | |
1132 | || (!WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) | |
1133 | && !WINDOW_RIGHTMOST_P (w) | |
1134 | && eabs (x - right_x) < grabbable_width)) | |
1135 | return ON_VERTICAL_BORDER; | |
1136 | else | |
1137 | return part; | |
1138 | } | |
1139 | ||
466539bc EZ |
1140 | /* In what's below, we subtract 1 when computing right_x because we |
1141 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
1142 | if (w->pseudo_window_p) |
1143 | { | |
1144 | left_x = 0; | |
949cf20f | 1145 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
5500c422 GM |
1146 | } |
1147 | else | |
1148 | { | |
949cf20f KS |
1149 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
1150 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
5500c422 | 1151 | } |
37962e60 | 1152 | |
949cf20f | 1153 | /* Outside any interesting column? */ |
9173a8fb CY |
1154 | if (x < left_x || x > right_x) |
1155 | return ON_SCROLL_BAR; | |
949cf20f KS |
1156 | |
1157 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
1158 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 1159 | |
949cf20f KS |
1160 | text_left = window_box_left (w, TEXT_AREA); |
1161 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
1162 | ||
1163 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 1164 | { |
447e9da0 | 1165 | if (!w->pseudo_window_p |
949cf20f | 1166 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 1167 | && !WINDOW_RIGHTMOST_P (w) |
9173a8fb CY |
1168 | && (eabs (x - right_x) < grabbable_width)) |
1169 | return ON_VERTICAL_BORDER; | |
fbad6f9a | 1170 | } |
9173a8fb CY |
1171 | /* Need to say "x > right_x" rather than >=, since on character |
1172 | terminals, the vertical line's x coordinate is right_x. */ | |
1173 | else if (!w->pseudo_window_p | |
1174 | && !WINDOW_RIGHTMOST_P (w) | |
1175 | && x > right_x - ux) | |
1176 | return ON_VERTICAL_BORDER; | |
1177 | ||
1178 | if (x < text_left) | |
949cf20f KS |
1179 | { |
1180 | if (lmargin_width > 0 | |
1181 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1182 | ? (x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) |
1183 | : (x < left_x + lmargin_width))) | |
1184 | return ON_LEFT_MARGIN; | |
1185 | ||
949cf20f KS |
1186 | return ON_LEFT_FRINGE; |
1187 | } | |
1188 | ||
9173a8fb | 1189 | if (x >= text_right) |
949cf20f KS |
1190 | { |
1191 | if (rmargin_width > 0 | |
1192 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1193 | ? (x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) |
1194 | : (x >= right_x - rmargin_width))) | |
1195 | return ON_RIGHT_MARGIN; | |
1196 | ||
949cf20f KS |
1197 | return ON_RIGHT_FRINGE; |
1198 | } | |
1199 | ||
1200 | /* Everything special ruled out - must be on text area */ | |
949cf20f | 1201 | return ON_TEXT; |
d5783c40 JB |
1202 | } |
1203 | ||
9173a8fb CY |
1204 | /* Take X is the frame-relative pixel x-coordinate, and return the |
1205 | x-coordinate relative to part PART of window W. */ | |
1206 | int | |
1207 | window_relative_x_coord (struct window *w, enum window_part part, int x) | |
1208 | { | |
1209 | int left_x = (w->pseudo_window_p) ? 0 : WINDOW_BOX_LEFT_EDGE_X (w); | |
1210 | ||
1211 | switch (part) | |
1212 | { | |
1213 | case ON_TEXT: | |
1214 | return x - window_box_left (w, TEXT_AREA); | |
1215 | ||
1216 | case ON_LEFT_FRINGE: | |
1217 | return x - left_x; | |
1218 | ||
1219 | case ON_RIGHT_FRINGE: | |
1220 | return x - left_x - WINDOW_LEFT_FRINGE_WIDTH (w); | |
1221 | ||
1222 | case ON_LEFT_MARGIN: | |
1223 | return (x - left_x | |
1224 | - ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1225 | ? WINDOW_LEFT_FRINGE_WIDTH (w) : 0)); | |
1226 | ||
1227 | case ON_RIGHT_MARGIN: | |
1228 | return (x + 1 | |
1229 | - ((w->pseudo_window_p) | |
1230 | ? WINDOW_TOTAL_WIDTH (w) | |
1231 | : WINDOW_BOX_RIGHT_EDGE_X (w)) | |
1232 | + window_box_width (w, RIGHT_MARGIN_AREA) | |
1233 | + ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1234 | ? WINDOW_RIGHT_FRINGE_WIDTH (w) : 0)); | |
1235 | } | |
1236 | ||
1237 | /* ON_SCROLL_BAR, ON_NOTHING, and ON_VERTICAL_BORDER: */ | |
1238 | return 0; | |
1239 | } | |
1240 | ||
b0228ace | 1241 | |
d5783c40 | 1242 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
1243 | Scoordinates_in_window_p, 2, 2, 0, |
1244 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
52162052 | 1245 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1246 | COORDINATES is a cons of the form (X . Y), X and Y being distances |
1247 | measured in characters from the upper-left corner of the frame. | |
23fe745a | 1248 | \(0 . 0) denotes the character in the upper left corner of the |
fdb82f93 PJ |
1249 | frame. |
1250 | If COORDINATES are in the text portion of WINDOW, | |
1251 | the coordinates relative to the window are returned. | |
1252 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
1253 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
1254 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
1255 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 1256 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
1257 | `vertical-line' is returned. |
1258 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
1259 | or `right-margin' is returned. */) | |
5842a27b | 1260 | (register Lisp_Object coordinates, Lisp_Object window) |
d5783c40 | 1261 | { |
5500c422 GM |
1262 | struct window *w; |
1263 | struct frame *f; | |
d5783c40 | 1264 | int x, y; |
5500c422 | 1265 | Lisp_Object lx, ly; |
d5783c40 | 1266 | |
52162052 | 1267 | w = decode_live_window (window); |
d3d50620 | 1268 | f = XFRAME (w->frame); |
b7826503 | 1269 | CHECK_CONS (coordinates); |
5500c422 GM |
1270 | lx = Fcar (coordinates); |
1271 | ly = Fcdr (coordinates); | |
b7826503 PJ |
1272 | CHECK_NUMBER_OR_FLOAT (lx); |
1273 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
1274 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
1275 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 | 1276 | |
9173a8fb | 1277 | switch (coordinates_in_window (w, x, y)) |
d5783c40 | 1278 | { |
7442878f | 1279 | case ON_NOTHING: |
d5783c40 JB |
1280 | return Qnil; |
1281 | ||
7442878f | 1282 | case ON_TEXT: |
9173a8fb CY |
1283 | /* Convert X and Y to window relative pixel coordinates, and |
1284 | return the canonical char units. */ | |
1285 | x -= window_box_left (w, TEXT_AREA); | |
1286 | y -= WINDOW_TOP_EDGE_Y (w); | |
949cf20f KS |
1287 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
1288 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 1289 | |
7442878f | 1290 | case ON_MODE_LINE: |
d5783c40 | 1291 | return Qmode_line; |
37962e60 | 1292 | |
7442878f | 1293 | case ON_VERTICAL_BORDER: |
e5d77022 | 1294 | return Qvertical_line; |
d5783c40 | 1295 | |
7442878f | 1296 | case ON_HEADER_LINE: |
045dee35 | 1297 | return Qheader_line; |
5500c422 | 1298 | |
7442878f GM |
1299 | case ON_LEFT_FRINGE: |
1300 | return Qleft_fringe; | |
177c0ea7 | 1301 | |
7442878f GM |
1302 | case ON_RIGHT_FRINGE: |
1303 | return Qright_fringe; | |
fbad6f9a | 1304 | |
49b996e7 GM |
1305 | case ON_LEFT_MARGIN: |
1306 | return Qleft_margin; | |
177c0ea7 | 1307 | |
49b996e7 GM |
1308 | case ON_RIGHT_MARGIN: |
1309 | return Qright_margin; | |
1310 | ||
6487f669 RS |
1311 | case ON_SCROLL_BAR: |
1312 | /* Historically we are supposed to return nil in this case. */ | |
1313 | return Qnil; | |
1314 | ||
d5783c40 | 1315 | default: |
1088b922 | 1316 | emacs_abort (); |
d5783c40 JB |
1317 | } |
1318 | } | |
1319 | ||
67492200 GM |
1320 | |
1321 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
1322 | Check if window W contains coordinates specified by USER_DATA which |
1323 | is actually a pointer to a struct check_window_data CW. | |
1324 | ||
1325 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
1326 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 1327 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
1328 | zero from this function to stop iterating over windows. */ |
1329 | ||
1330 | struct check_window_data | |
1331 | { | |
1332 | Lisp_Object *window; | |
9173a8fb | 1333 | int x, y; |
341f3858 | 1334 | enum window_part *part; |
f95464e4 | 1335 | }; |
67492200 GM |
1336 | |
1337 | static int | |
971de7fb | 1338 | check_window_containing (struct window *w, void *user_data) |
67492200 | 1339 | { |
7d652d97 | 1340 | struct check_window_data *cw = user_data; |
7442878f GM |
1341 | enum window_part found; |
1342 | int continue_p = 1; | |
67492200 | 1343 | |
f95464e4 | 1344 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1345 | if (found != ON_NOTHING) |
67492200 | 1346 | { |
341f3858 | 1347 | *cw->part = found; |
f95464e4 | 1348 | XSETWINDOW (*cw->window, w); |
7442878f | 1349 | continue_p = 0; |
67492200 | 1350 | } |
177c0ea7 | 1351 | |
7442878f | 1352 | return continue_p; |
67492200 GM |
1353 | } |
1354 | ||
1355 | ||
5500c422 | 1356 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1357 | return it as a Lisp_Object. |
1358 | ||
1359 | If X, Y is on one of the window's special `window_part' elements, | |
9173a8fb | 1360 | set *PART to the id of that element. |
949cf20f | 1361 | |
341f3858 | 1362 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1363 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1364 | ||
1365 | This function was previously implemented with a loop cycling over | |
1366 | windows with Fnext_window, and starting with the frame's selected | |
1367 | window. It turned out that this doesn't work with an | |
1368 | implementation of next_window using Vwindow_list, because | |
1369 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1370 | tree of F when this function is called asynchronously from | |
1371 | note_mouse_highlight. The original loop didn't terminate in this | |
1372 | case. */ | |
5500c422 | 1373 | |
7ab12479 | 1374 | Lisp_Object |
9173a8fb | 1375 | window_from_coordinates (struct frame *f, int x, int y, |
748fa866 | 1376 | enum window_part *part, bool tool_bar_p) |
7ab12479 | 1377 | { |
67492200 | 1378 | Lisp_Object window; |
f95464e4 | 1379 | struct check_window_data cw; |
341f3858 KS |
1380 | enum window_part dummy; |
1381 | ||
1382 | if (part == 0) | |
1383 | part = &dummy; | |
5500c422 | 1384 | |
67492200 | 1385 | window = Qnil; |
9173a8fb | 1386 | cw.window = &window, cw.x = x, cw.y = y; cw.part = part; |
f95464e4 | 1387 | foreach_window (f, check_window_containing, &cw); |
177c0ea7 | 1388 | |
67492200 GM |
1389 | /* If not found above, see if it's in the tool bar window, if a tool |
1390 | bar exists. */ | |
1391 | if (NILP (window) | |
1392 | && tool_bar_p | |
e69b0960 DA |
1393 | && WINDOWP (f->tool_bar_window) |
1394 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 | |
1395 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), x, y) | |
7442878f | 1396 | != ON_NOTHING)) |
5500c422 | 1397 | { |
341f3858 | 1398 | *part = ON_TEXT; |
e69b0960 | 1399 | window = f->tool_bar_window; |
5500c422 | 1400 | } |
37962e60 | 1401 | |
67492200 | 1402 | return window; |
7ab12479 JB |
1403 | } |
1404 | ||
ab17c3f2 | 1405 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 | 1406 | doc: /* Return window containing coordinates X and Y on FRAME. |
496e208e | 1407 | FRAME must be a live frame and defaults to the selected one. |
fdb82f93 PJ |
1408 | The top left corner of the frame is considered to be row 0, |
1409 | column 0. */) | |
5842a27b | 1410 | (Lisp_Object x, Lisp_Object y, Lisp_Object frame) |
7ab12479 | 1411 | { |
d9f07150 | 1412 | struct frame *f = decode_live_frame (frame); |
7ab12479 | 1413 | |
5500c422 | 1414 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1415 | CHECK_NUMBER_OR_FLOAT (x); |
1416 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1417 | |
177c0ea7 | 1418 | return window_from_coordinates (f, |
2c77cf3b RS |
1419 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1420 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1421 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1422 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
9173a8fb | 1423 | 0, 0); |
7ab12479 JB |
1424 | } |
1425 | ||
1426 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1427 | doc: /* Return current value of point in WINDOW. |
496e208e | 1428 | WINDOW must be a live window and defaults to the selected one. |
c85322d0 | 1429 | |
5481664a MR |
1430 | For a nonselected window, this is the value point would have if that |
1431 | window were selected. | |
1432 | ||
1433 | Note that, when WINDOW is selected, the value returned is the same as | |
1434 | that returned by `point' for WINDOW's buffer. It would be more strictly | |
9fc9a531 | 1435 | correct to return the top-level value of `point', outside of any |
5481664a | 1436 | `save-excursion' forms. But that is hard to define. */) |
5842a27b | 1437 | (Lisp_Object window) |
7ab12479 | 1438 | { |
52162052 | 1439 | register struct window *w = decode_live_window (window); |
7ab12479 | 1440 | |
5481664a | 1441 | if (w == XWINDOW (selected_window)) |
e74aeda8 | 1442 | return make_number (BUF_PT (XBUFFER (w->contents))); |
5481664a MR |
1443 | else |
1444 | return Fmarker_position (w->pointm); | |
7ab12479 JB |
1445 | } |
1446 | ||
1447 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1448 | doc: /* Return position at which display currently starts in WINDOW. |
496e208e | 1449 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 1450 | This is updated by redisplay or by calling `set-window-start'. */) |
5842a27b | 1451 | (Lisp_Object window) |
7ab12479 | 1452 | { |
52162052 | 1453 | return Fmarker_position (decode_live_window (window)->start); |
7ab12479 JB |
1454 | } |
1455 | ||
8646118f RS |
1456 | /* This is text temporarily removed from the doc string below. |
1457 | ||
fdb82f93 PJ |
1458 | This function returns nil if the position is not currently known. |
1459 | That happens when redisplay is preempted and doesn't finish. | |
1460 | If in that case you want to compute where the end of the window would | |
1461 | have been if redisplay had finished, do this: | |
1462 | (save-excursion | |
1463 | (goto-char (window-start window)) | |
1464 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1465 | (point))") */ |
1466 | ||
478292ed | 1467 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1468 | doc: /* Return position at which display currently ends in WINDOW. |
496e208e | 1469 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1470 | This is updated by redisplay, when it runs to completion. |
1471 | Simply changing the buffer text or setting `window-start' | |
1472 | does not update this value. | |
87e68db4 | 1473 | Return nil if there is no recorded value. (This can happen if the |
a0a37a6f | 1474 | last redisplay of WINDOW was preempted, and did not finish.) |
fdb82f93 PJ |
1475 | If UPDATE is non-nil, compute the up-to-date position |
1476 | if it isn't already recorded. */) | |
5842a27b | 1477 | (Lisp_Object window, Lisp_Object update) |
7ab12479 JB |
1478 | { |
1479 | Lisp_Object value; | |
52162052 | 1480 | struct window *w = decode_live_window (window); |
5a41ab94 | 1481 | Lisp_Object buf; |
31790df3 | 1482 | struct buffer *b; |
5a41ab94 | 1483 | |
e74aeda8 | 1484 | buf = w->contents; |
b7826503 | 1485 | CHECK_BUFFER (buf); |
b3a10345 | 1486 | b = XBUFFER (buf); |
5a41ab94 | 1487 | |
478292ed | 1488 | if (! NILP (update) |
fcc1fe85 EZ |
1489 | && (windows_or_buffers_changed |
1490 | || !w->window_end_valid | |
1491 | || b->clip_changed | |
1492 | || b->prevent_redisplay_optimizations_p | |
170da1ec | 1493 | || window_outdated (w)) |
41791a20 | 1494 | && !noninteractive) |
478292ed | 1495 | { |
cbc099e5 | 1496 | struct text_pos startp; |
4c1acb95 | 1497 | ptrdiff_t charpos = marker_position (w->start); |
cbc099e5 | 1498 | struct it it; |
b3a10345 | 1499 | struct buffer *old_buffer = NULL; |
57b3e30b | 1500 | void *itdata = NULL; |
b3a10345 KS |
1501 | |
1502 | /* Cannot use Fvertical_motion because that function doesn't | |
1503 | cope with variable-height lines. */ | |
1504 | if (b != current_buffer) | |
1505 | { | |
1506 | old_buffer = current_buffer; | |
1507 | set_buffer_internal (b); | |
1508 | } | |
2d6d9df0 GM |
1509 | |
1510 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1511 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1512 | `-l' containing a call to `rmail' with subsequent other |
1513 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1514 | rmail had already narrowed the buffer. */ |
4c1acb95 | 1515 | if (charpos < BEGV) |
cbc099e5 | 1516 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
4c1acb95 | 1517 | else if (charpos > ZV) |
cbc099e5 | 1518 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1519 | else |
d3d50620 | 1520 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
cbc099e5 | 1521 | |
57b3e30b | 1522 | itdata = bidi_shelve_cache (); |
cbc099e5 GM |
1523 | start_display (&it, w, startp); |
1524 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1525 | if (it.current_y < it.last_visible_y) |
1526 | move_it_past_eol (&it); | |
cbc099e5 | 1527 | value = make_number (IT_CHARPOS (it)); |
35928349 | 1528 | bidi_unshelve_cache (itdata, 0); |
177c0ea7 | 1529 | |
99593a9d GM |
1530 | if (old_buffer) |
1531 | set_buffer_internal (old_buffer); | |
478292ed RS |
1532 | } |
1533 | else | |
02455cb6 | 1534 | XSETINT (value, BUF_Z (b) - w->window_end_pos); |
7ab12479 JB |
1535 | |
1536 | return value; | |
1537 | } | |
1538 | ||
a7ca3326 | 1539 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, |
a0a37a6f | 1540 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
52162052 | 1541 | WINDOW must be a live window and defaults to the selected one. |
a0a37a6f | 1542 | Return POS. */) |
5842a27b | 1543 | (Lisp_Object window, Lisp_Object pos) |
7ab12479 | 1544 | { |
52162052 | 1545 | register struct window *w = decode_live_window (window); |
7ab12479 | 1546 | |
f74de345 | 1547 | /* Type of POS is checked by Fgoto_char or set_marker_restricted ... */ |
799417bd | 1548 | |
5481664a MR |
1549 | if (w == XWINDOW (selected_window)) |
1550 | { | |
e74aeda8 | 1551 | if (XBUFFER (w->contents) == current_buffer) |
5481664a MR |
1552 | Fgoto_char (pos); |
1553 | else | |
1554 | { | |
1555 | struct buffer *old_buffer = current_buffer; | |
1556 | ||
f74de345 DA |
1557 | /* ... but here we want to catch type error before buffer change. */ |
1558 | CHECK_NUMBER_COERCE_MARKER (pos); | |
e74aeda8 | 1559 | set_buffer_internal (XBUFFER (w->contents)); |
5481664a MR |
1560 | Fgoto_char (pos); |
1561 | set_buffer_internal (old_buffer); | |
1562 | } | |
1563 | } | |
1564 | else | |
1565 | { | |
e74aeda8 | 1566 | set_marker_restricted (w->pointm, pos, w->contents); |
5481664a MR |
1567 | /* We have to make sure that redisplay updates the window to show |
1568 | the new value of point. */ | |
1569 | ++windows_or_buffers_changed; | |
1570 | } | |
177c0ea7 | 1571 | |
7ab12479 JB |
1572 | return pos; |
1573 | } | |
1574 | ||
1575 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1576 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
52162052 MR |
1577 | WINDOW must be a live window and defaults to the selected one. Return |
1578 | POS. Optional third arg NOFORCE non-nil inhibits next redisplay from | |
d653c8cc | 1579 | overriding motion of point in order to display at this exact start. */) |
5842a27b | 1580 | (Lisp_Object window, Lisp_Object pos, Lisp_Object noforce) |
7ab12479 | 1581 | { |
52162052 | 1582 | register struct window *w = decode_live_window (window); |
7ab12479 | 1583 | |
e74aeda8 | 1584 | set_marker_restricted (w->start, pos, w->contents); |
f74de345 | 1585 | /* This is not right, but much easier than doing what is right. */ |
c98ff5dd | 1586 | w->start_at_line_beg = 0; |
265a9e55 | 1587 | if (NILP (noforce)) |
c98ff5dd DA |
1588 | w->force_start = 1; |
1589 | w->update_mode_line = 1; | |
ae966a86 | 1590 | if (w != XWINDOW (selected_window)) |
628fdc56 | 1591 | /* Enforce full redisplay. FIXME: make it more selective. */ |
62c07cc7 | 1592 | windows_or_buffers_changed++; |
ce7fae7d | 1593 | |
7ab12479 JB |
1594 | return pos; |
1595 | } | |
1596 | ||
496e208e MR |
1597 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
1598 | Spos_visible_in_window_p, 0, 3, 0, | |
1599 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. | |
52162052 MR |
1600 | WINDOW must be a live window and defaults to the selected one. |
1601 | ||
1602 | Return nil if that position is scrolled vertically out of view. If a | |
1603 | character is only partially visible, nil is returned, unless the | |
1604 | optional argument PARTIALLY is non-nil. If POS is only out of view | |
1605 | because of horizontal scrolling, return non-nil. If POS is t, it | |
1606 | specifies the position of the last visible glyph in WINDOW. POS | |
1607 | defaults to point in WINDOW; WINDOW defaults to the selected window. | |
496e208e MR |
1608 | |
1609 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
ba59bd80 | 1610 | the return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), |
496e208e MR |
1611 | where X and Y are the pixel coordinates relative to the top left corner |
1612 | of the window. The remaining elements are omitted if the character after | |
1613 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
ba59bd80 EZ |
1614 | off-window at the top and bottom of the screen line ("row") containing |
1615 | POS, ROWH is the visible height of that row, and VPOS is the row number | |
1616 | \(zero-based). */) | |
496e208e MR |
1617 | (Lisp_Object pos, Lisp_Object window, Lisp_Object partially) |
1618 | { | |
1619 | register struct window *w; | |
1620 | register EMACS_INT posint; | |
1621 | register struct buffer *buf; | |
1622 | struct text_pos top; | |
1623 | Lisp_Object in_window = Qnil; | |
1624 | int rtop, rbot, rowh, vpos, fully_p = 1; | |
1625 | int x, y; | |
1626 | ||
52162052 | 1627 | w = decode_live_window (window); |
e74aeda8 | 1628 | buf = XBUFFER (w->contents); |
d3d50620 | 1629 | SET_TEXT_POS_FROM_MARKER (top, w->start); |
496e208e MR |
1630 | |
1631 | if (EQ (pos, Qt)) | |
1632 | posint = -1; | |
1633 | else if (!NILP (pos)) | |
1634 | { | |
1635 | CHECK_NUMBER_COERCE_MARKER (pos); | |
1636 | posint = XINT (pos); | |
1637 | } | |
1638 | else if (w == XWINDOW (selected_window)) | |
1639 | posint = PT; | |
1640 | else | |
4c1acb95 | 1641 | posint = marker_position (w->pointm); |
496e208e MR |
1642 | |
1643 | /* If position is above window start or outside buffer boundaries, | |
1644 | or if window start is out of range, position is not visible. */ | |
1645 | if ((EQ (pos, Qt) | |
1646 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
1647 | && CHARPOS (top) >= BUF_BEGV (buf) | |
1648 | && CHARPOS (top) <= BUF_ZV (buf) | |
1649 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) | |
1650 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) | |
1651 | in_window = Qt; | |
1652 | ||
1653 | if (!NILP (in_window) && !NILP (partially)) | |
1654 | { | |
1655 | Lisp_Object part = Qnil; | |
1656 | if (!fully_p) | |
1479c557 | 1657 | part = list4i (rtop, rbot, rowh, vpos); |
496e208e MR |
1658 | in_window = Fcons (make_number (x), |
1659 | Fcons (make_number (y), part)); | |
1660 | } | |
1661 | ||
1662 | return in_window; | |
1663 | } | |
1664 | ||
1665 | DEFUN ("window-line-height", Fwindow_line_height, | |
1666 | Swindow_line_height, 0, 2, 0, | |
1667 | doc: /* Return height in pixels of text line LINE in window WINDOW. | |
52162052 | 1668 | WINDOW must be a live window and defaults to the selected one. |
496e208e MR |
1669 | |
1670 | Return height of current line if LINE is omitted or nil. Return height of | |
1671 | header or mode line if LINE is `header-line' or `mode-line'. | |
1672 | Otherwise, LINE is a text line number starting from 0. A negative number | |
1673 | counts from the end of the window. | |
1674 | ||
1675 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height | |
1676 | in pixels of the visible part of the line, VPOS and YPOS are the | |
1677 | vertical position in lines and pixels of the line, relative to the top | |
1678 | of the first text line, and OFFBOT is the number of off-window pixels at | |
1679 | the bottom of the text line. If there are off-window pixels at the top | |
1680 | of the (first) text line, YPOS is negative. | |
1681 | ||
1682 | Return nil if window display is not up-to-date. In that case, use | |
1683 | `pos-visible-in-window-p' to obtain the information. */) | |
1684 | (Lisp_Object line, Lisp_Object window) | |
1685 | { | |
1686 | register struct window *w; | |
1687 | register struct buffer *b; | |
1688 | struct glyph_row *row, *end_row; | |
d311d28c PE |
1689 | int max_y, crop, i; |
1690 | EMACS_INT n; | |
496e208e | 1691 | |
52162052 | 1692 | w = decode_live_window (window); |
496e208e MR |
1693 | |
1694 | if (noninteractive || w->pseudo_window_p) | |
1695 | return Qnil; | |
1696 | ||
e74aeda8 DA |
1697 | CHECK_BUFFER (w->contents); |
1698 | b = XBUFFER (w->contents); | |
496e208e MR |
1699 | |
1700 | /* Fail if current matrix is not up-to-date. */ | |
9d93ce29 | 1701 | if (!w->window_end_valid |
fcc1fe85 EZ |
1702 | || windows_or_buffers_changed |
1703 | || b->clip_changed | |
1704 | || b->prevent_redisplay_optimizations_p | |
170da1ec | 1705 | || window_outdated (w)) |
496e208e MR |
1706 | return Qnil; |
1707 | ||
1708 | if (NILP (line)) | |
1709 | { | |
1710 | i = w->cursor.vpos; | |
1711 | if (i < 0 || i >= w->current_matrix->nrows | |
1712 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
1713 | return Qnil; | |
1714 | max_y = window_text_bottom_y (w); | |
1715 | goto found_row; | |
1716 | } | |
1717 | ||
1718 | if (EQ (line, Qheader_line)) | |
1719 | { | |
1720 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) | |
1721 | return Qnil; | |
1722 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
1479c557 | 1723 | return row->enabled_p ? list4i (row->height, 0, 0, 0) : Qnil; |
496e208e MR |
1724 | } |
1725 | ||
1726 | if (EQ (line, Qmode_line)) | |
1727 | { | |
1728 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); | |
89bc0592 | 1729 | return (row->enabled_p ? |
1479c557 PE |
1730 | list4i (row->height, |
1731 | 0, /* not accurate */ | |
1732 | (WINDOW_HEADER_LINE_HEIGHT (w) | |
1733 | + window_text_bottom_y (w)), | |
1734 | 0) | |
89bc0592 | 1735 | : Qnil); |
496e208e MR |
1736 | } |
1737 | ||
1738 | CHECK_NUMBER (line); | |
1739 | n = XINT (line); | |
1740 | ||
1741 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
1742 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
1743 | max_y = window_text_bottom_y (w); | |
1744 | i = 0; | |
1745 | ||
1746 | while ((n < 0 || i < n) | |
1747 | && row <= end_row && row->enabled_p | |
1748 | && row->y + row->height < max_y) | |
1749 | row++, i++; | |
1750 | ||
1751 | if (row > end_row || !row->enabled_p) | |
1752 | return Qnil; | |
1753 | ||
1754 | if (++n < 0) | |
1755 | { | |
1756 | if (-n > i) | |
1757 | return Qnil; | |
1758 | row += n; | |
1759 | i += n; | |
1760 | } | |
1761 | ||
1762 | found_row: | |
1763 | crop = max (0, (row->y + row->height) - max_y); | |
1479c557 | 1764 | return list4i (row->height + min (0, row->y) - crop, i, row->y, crop); |
496e208e | 1765 | } |
d653c8cc | 1766 | |
a7ca3326 | 1767 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, |
d653c8cc MR |
1768 | 0, 1, 0, |
1769 | doc: /* Return non-nil when WINDOW is dedicated to its buffer. | |
12bb3111 | 1770 | More precisely, return the value assigned by the last call of |
7bfac547 MR |
1771 | `set-window-dedicated-p' for WINDOW. Return nil if that function was |
1772 | never called with WINDOW as its argument, or the value set by that | |
52162052 MR |
1773 | function was internally reset since its last call. WINDOW must be a |
1774 | live window and defaults to the selected one. | |
7bfac547 MR |
1775 | |
1776 | When a window is dedicated to its buffer, `display-buffer' will refrain | |
1777 | from displaying another buffer in it. `get-lru-window' and | |
1778 | `get-largest-window' treat dedicated windows specially. | |
1779 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1780 | `kill-buffer' can delete a dedicated window and the containing frame. | |
1781 | ||
1782 | Functions like `set-window-buffer' may change the buffer displayed by a | |
1783 | window, unless that window is "strongly" dedicated to its buffer, that | |
1784 | is the value returned by `window-dedicated-p' is t. */) | |
5842a27b | 1785 | (Lisp_Object window) |
7ab12479 | 1786 | { |
52162052 | 1787 | return decode_live_window (window)->dedicated; |
7ab12479 JB |
1788 | } |
1789 | ||
d207b766 RS |
1790 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1791 | Sset_window_dedicated_p, 2, 2, 0, | |
d653c8cc | 1792 | doc: /* Mark WINDOW as dedicated according to FLAG. |
496e208e MR |
1793 | WINDOW must be a live window and defaults to the selected one. FLAG |
1794 | non-nil means mark WINDOW as dedicated to its buffer. FLAG nil means | |
1795 | mark WINDOW as non-dedicated. Return FLAG. | |
d653c8cc | 1796 | |
7bfac547 MR |
1797 | When a window is dedicated to its buffer, `display-buffer' will refrain |
1798 | from displaying another buffer in it. `get-lru-window' and | |
1799 | `get-largest-window' treat dedicated windows specially. | |
496e208e MR |
1800 | `delete-windows-on', `replace-buffer-in-windows', `quit-window', |
1801 | `quit-restore-window' and `kill-buffer' can delete a dedicated window | |
1802 | and the containing frame. | |
7bfac547 MR |
1803 | |
1804 | As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to | |
1805 | its buffer. Functions like `set-window-buffer' may change the buffer | |
1806 | displayed by a window, unless that window is strongly dedicated to its | |
1807 | buffer. If and when `set-window-buffer' displays another buffer in a | |
496e208e | 1808 | window, it also makes sure that the window is no more dedicated. */) |
5842a27b | 1809 | (Lisp_Object window, Lisp_Object flag) |
7ab12479 | 1810 | { |
e8c17b81 PE |
1811 | wset_dedicated (decode_live_window (window), flag); |
1812 | return flag; | |
7ab12479 JB |
1813 | } |
1814 | ||
496e208e MR |
1815 | DEFUN ("window-prev-buffers", Fwindow_prev_buffers, Swindow_prev_buffers, |
1816 | 0, 1, 0, | |
1817 | doc: /* Return buffers previously shown in WINDOW. | |
1818 | WINDOW must be a live window and defaults to the selected one. | |
1819 | ||
94e0933e CY |
1820 | The return value is a list of elements (BUFFER WINDOW-START POS), |
1821 | where BUFFER is a buffer, WINDOW-START is the start position of the | |
1822 | window for that buffer, and POS is a window-specific point value. */) | |
496e208e MR |
1823 | (Lisp_Object window) |
1824 | { | |
52162052 | 1825 | return decode_live_window (window)->prev_buffers; |
496e208e MR |
1826 | } |
1827 | ||
1828 | DEFUN ("set-window-prev-buffers", Fset_window_prev_buffers, | |
1829 | Sset_window_prev_buffers, 2, 2, 0, | |
1830 | doc: /* Set WINDOW's previous buffers to PREV-BUFFERS. | |
94e0933e | 1831 | WINDOW must be a live window and defaults to the selected one. |
496e208e | 1832 | |
94e0933e CY |
1833 | PREV-BUFFERS should be a list of elements (BUFFER WINDOW-START POS), |
1834 | where BUFFER is a buffer, WINDOW-START is the start position of the | |
1835 | window for that buffer, and POS is a window-specific point value. */) | |
496e208e MR |
1836 | (Lisp_Object window, Lisp_Object prev_buffers) |
1837 | { | |
e8c17b81 PE |
1838 | wset_prev_buffers (decode_live_window (window), prev_buffers); |
1839 | return prev_buffers; | |
496e208e MR |
1840 | } |
1841 | ||
1842 | DEFUN ("window-next-buffers", Fwindow_next_buffers, Swindow_next_buffers, | |
1843 | 0, 1, 0, | |
1844 | doc: /* Return list of buffers recently re-shown in WINDOW. | |
1845 | WINDOW must be a live window and defaults to the selected one. */) | |
1846 | (Lisp_Object window) | |
1847 | { | |
52162052 | 1848 | return decode_live_window (window)->next_buffers; |
496e208e MR |
1849 | } |
1850 | ||
1851 | DEFUN ("set-window-next-buffers", Fset_window_next_buffers, | |
1852 | Sset_window_next_buffers, 2, 2, 0, | |
1853 | doc: /* Set WINDOW's next buffers to NEXT-BUFFERS. | |
94e0933e CY |
1854 | WINDOW must be a live window and defaults to the selected one. |
1855 | NEXT-BUFFERS should be a list of buffers. */) | |
496e208e MR |
1856 | (Lisp_Object window, Lisp_Object next_buffers) |
1857 | { | |
e8c17b81 PE |
1858 | wset_next_buffers (decode_live_window (window), next_buffers); |
1859 | return next_buffers; | |
496e208e | 1860 | } |
d653c8cc | 1861 | |
cfbb2395 JB |
1862 | DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters, |
1863 | 0, 1, 0, | |
d653c8cc | 1864 | doc: /* Return the parameters of WINDOW and their values. |
52162052 MR |
1865 | WINDOW must be a valid window and defaults to the selected one. The |
1866 | return value is a list of elements of the form (PARAMETER . VALUE). */) | |
5842a27b | 1867 | (Lisp_Object window) |
cfbb2395 | 1868 | { |
52162052 | 1869 | return Fcopy_alist (decode_valid_window (window)->window_parameters); |
cfbb2395 JB |
1870 | } |
1871 | ||
1872 | DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter, | |
1873 | 2, 2, 0, | |
d653c8cc | 1874 | doc: /* Return WINDOW's value for PARAMETER. |
a8c729af | 1875 | WINDOW can be any window and defaults to the selected one. */) |
5842a27b | 1876 | (Lisp_Object window, Lisp_Object parameter) |
cfbb2395 | 1877 | { |
927abf37 JB |
1878 | Lisp_Object result; |
1879 | ||
a8c729af | 1880 | result = Fassq (parameter, decode_any_window (window)->window_parameters); |
927abf37 | 1881 | return CDR_SAFE (result); |
cfbb2395 JB |
1882 | } |
1883 | ||
cfbb2395 JB |
1884 | DEFUN ("set-window-parameter", Fset_window_parameter, |
1885 | Sset_window_parameter, 3, 3, 0, | |
d653c8cc | 1886 | doc: /* Set WINDOW's value of PARAMETER to VALUE. |
a8c729af | 1887 | WINDOW can be any window and defaults to the selected one. |
52162052 | 1888 | Return VALUE. */) |
5842a27b | 1889 | (Lisp_Object window, Lisp_Object parameter, Lisp_Object value) |
cfbb2395 | 1890 | { |
a8c729af | 1891 | register struct window *w = decode_any_window (window); |
cfbb2395 JB |
1892 | Lisp_Object old_alist_elt; |
1893 | ||
d3d50620 | 1894 | old_alist_elt = Fassq (parameter, w->window_parameters); |
12bb3111 | 1895 | if (NILP (old_alist_elt)) |
e8c17b81 PE |
1896 | wset_window_parameters |
1897 | (w, Fcons (Fcons (parameter, value), w->window_parameters)); | |
cfbb2395 JB |
1898 | else |
1899 | Fsetcdr (old_alist_elt, value); | |
927abf37 | 1900 | return value; |
cfbb2395 JB |
1901 | } |
1902 | ||
7ab12479 JB |
1903 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, |
1904 | 0, 1, 0, | |
c85322d0 | 1905 | doc: /* Return the display-table that WINDOW is using. |
52162052 | 1906 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 1907 | (Lisp_Object window) |
7ab12479 | 1908 | { |
52162052 | 1909 | return decode_live_window (window)->display_table; |
7ab12479 JB |
1910 | } |
1911 | ||
5500c422 GM |
1912 | /* Get the display table for use on window W. This is either W's |
1913 | display table or W's buffer's display table. Ignore the specified | |
1914 | tables if they are not valid; if no valid table is specified, | |
1915 | return 0. */ | |
7ab12479 | 1916 | |
319315f1 | 1917 | struct Lisp_Char_Table * |
971de7fb | 1918 | window_display_table (struct window *w) |
7ab12479 | 1919 | { |
c756cdbe GM |
1920 | struct Lisp_Char_Table *dp = NULL; |
1921 | ||
d3d50620 DA |
1922 | if (DISP_TABLE_P (w->display_table)) |
1923 | dp = XCHAR_TABLE (w->display_table); | |
e74aeda8 | 1924 | else if (BUFFERP (w->contents)) |
c756cdbe | 1925 | { |
e74aeda8 | 1926 | struct buffer *b = XBUFFER (w->contents); |
177c0ea7 | 1927 | |
4b4deea2 TT |
1928 | if (DISP_TABLE_P (BVAR (b, display_table))) |
1929 | dp = XCHAR_TABLE (BVAR (b, display_table)); | |
c756cdbe GM |
1930 | else if (DISP_TABLE_P (Vstandard_display_table)) |
1931 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1932 | } | |
171d003c | 1933 | |
c756cdbe | 1934 | return dp; |
7ab12479 JB |
1935 | } |
1936 | ||
3a2712f9 | 1937 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
52162052 MR |
1938 | doc: /* Set WINDOW's display-table to TABLE. |
1939 | WINDOW must be a live window and defaults to the selected one. */) | |
5842a27b | 1940 | (register Lisp_Object window, Lisp_Object table) |
7ab12479 | 1941 | { |
e8c17b81 PE |
1942 | wset_display_table (decode_live_window (window), table); |
1943 | return table; | |
7ab12479 JB |
1944 | } |
1945 | \f | |
562dd5e9 | 1946 | /* Record info on buffer window W is displaying |
7ab12479 | 1947 | when it is about to cease to display that buffer. */ |
dfcf069d | 1948 | static void |
971de7fb | 1949 | unshow_buffer (register struct window *w) |
7ab12479 | 1950 | { |
e74aeda8 DA |
1951 | Lisp_Object buf = w->contents; |
1952 | struct buffer *b = XBUFFER (buf); | |
7ab12479 | 1953 | |
e74aeda8 | 1954 | eassert (b == XMARKER (w->pointm)->buffer); |
7ab12479 | 1955 | |
573f41ab | 1956 | #if 0 |
7ab12479 | 1957 | if (w == XWINDOW (selected_window) |
e74aeda8 | 1958 | || ! EQ (buf, XWINDOW (selected_window)->contents)) |
7ab12479 JB |
1959 | /* Do this except when the selected window's buffer |
1960 | is being removed from some other window. */ | |
573f41ab RS |
1961 | #endif |
1962 | /* last_window_start records the start position that this buffer | |
1963 | had in the last window to be disconnected from it. | |
1964 | Now that this statement is unconditional, | |
1965 | it is possible for the buffer to be displayed in the | |
1966 | selected window, while last_window_start reflects another | |
1967 | window which was recently showing the same buffer. | |
1968 | Some people might say that might be a good thing. Let's see. */ | |
d3d50620 | 1969 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1970 | |
1971 | /* Point in the selected window's buffer | |
1972 | is actually stored in that buffer, and the window's pointm isn't used. | |
1973 | So don't clobber point in that buffer. */ | |
e74aeda8 | 1974 | if (! EQ (buf, XWINDOW (selected_window)->contents) |
c4b6914d MR |
1975 | /* Don't clobber point in current buffer either (this could be |
1976 | useful in connection with bug#12208). | |
1977 | && XBUFFER (buf) != current_buffer */ | |
719eaeb1 | 1978 | /* This line helps to fix Horsley's testbug.el bug. */ |
4b4deea2 TT |
1979 | && !(WINDOWP (BVAR (b, last_selected_window)) |
1980 | && w != XWINDOW (BVAR (b, last_selected_window)) | |
e74aeda8 | 1981 | && EQ (buf, XWINDOW (BVAR (b, last_selected_window))->contents))) |
b73ea88e RS |
1982 | temp_set_point_both (b, |
1983 | clip_to_bounds (BUF_BEGV (b), | |
4c1acb95 | 1984 | marker_position (w->pointm), |
b73ea88e RS |
1985 | BUF_ZV (b)), |
1986 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
d3d50620 | 1987 | marker_byte_position (w->pointm), |
b73ea88e | 1988 | BUF_ZV_BYTE (b))); |
177c0ea7 | 1989 | |
4b4deea2 TT |
1990 | if (WINDOWP (BVAR (b, last_selected_window)) |
1991 | && w == XWINDOW (BVAR (b, last_selected_window))) | |
39eb03f1 | 1992 | bset_last_selected_window (b, Qnil); |
7ab12479 JB |
1993 | } |
1994 | ||
1a13852e MR |
1995 | /* Put NEW into the window structure in place of OLD. SETFLAG zero |
1996 | means change window structure only. Otherwise store geometry and | |
1997 | other settings as well. */ | |
dfcf069d | 1998 | static void |
1a13852e | 1999 | replace_window (Lisp_Object old, Lisp_Object new, int setflag) |
7ab12479 JB |
2000 | { |
2001 | register Lisp_Object tem; | |
1a13852e | 2002 | register struct window *o = XWINDOW (old), *n = XWINDOW (new); |
7ab12479 | 2003 | |
1a13852e MR |
2004 | /* If OLD is its frame's root window, then NEW is the new |
2005 | root window for that frame. */ | |
d3d50620 | 2006 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
f00af5b1 | 2007 | fset_root_window (XFRAME (o->frame), new); |
077288cf | 2008 | |
5f24fa51 DA |
2009 | if (setflag) |
2010 | { | |
2011 | n->left_col = o->left_col; | |
2012 | n->top_line = o->top_line; | |
2013 | n->total_cols = o->total_cols; | |
2014 | n->total_lines = o->total_lines; | |
e8c17b81 PE |
2015 | wset_normal_cols (n, o->normal_cols); |
2016 | wset_normal_cols (o, make_float (1.0)); | |
2017 | wset_normal_lines (n, o->normal_lines); | |
2018 | wset_normal_lines (o, make_float (1.0)); | |
1a13852e MR |
2019 | n->desired_matrix = n->current_matrix = 0; |
2020 | n->vscroll = 0; | |
2021 | memset (&n->cursor, 0, sizeof (n->cursor)); | |
1a13852e | 2022 | memset (&n->phys_cursor, 0, sizeof (n->phys_cursor)); |
c80016b3 | 2023 | n->last_cursor_vpos = 0; |
1a13852e MR |
2024 | n->phys_cursor_type = -1; |
2025 | n->phys_cursor_width = -1; | |
2026 | n->must_be_updated_p = 0; | |
2027 | n->pseudo_window_p = 0; | |
02455cb6 DA |
2028 | n->window_end_vpos = 0; |
2029 | n->window_end_pos = 0; | |
9d93ce29 | 2030 | n->window_end_valid = 0; |
1a13852e MR |
2031 | } |
2032 | ||
d3d50620 | 2033 | tem = o->next; |
e8c17b81 | 2034 | wset_next (n, tem); |
265a9e55 | 2035 | if (!NILP (tem)) |
e8c17b81 | 2036 | wset_prev (XWINDOW (tem), new); |
7ab12479 | 2037 | |
d3d50620 | 2038 | tem = o->prev; |
e8c17b81 | 2039 | wset_prev (n, tem); |
265a9e55 | 2040 | if (!NILP (tem)) |
e8c17b81 | 2041 | wset_next (XWINDOW (tem), new); |
7ab12479 | 2042 | |
d3d50620 | 2043 | tem = o->parent; |
e8c17b81 | 2044 | wset_parent (n, tem); |
e74aeda8 DA |
2045 | if (!NILP (tem) && EQ (XWINDOW (tem)->contents, old)) |
2046 | wset_combination (XWINDOW (tem), XWINDOW (tem)->horizontal, new); | |
1a13852e MR |
2047 | } |
2048 | ||
2049 | /* If window WINDOW and its parent window are iso-combined, merge | |
2050 | WINDOW's children into those of its parent window and mark WINDOW as | |
2051 | deleted. */ | |
2052 | ||
2053 | static void | |
2054 | recombine_windows (Lisp_Object window) | |
2055 | { | |
2056 | struct window *w, *p, *c; | |
2057 | Lisp_Object parent, child; | |
748fa866 | 2058 | bool horflag; |
1a13852e MR |
2059 | |
2060 | w = XWINDOW (window); | |
d3d50620 DA |
2061 | parent = w->parent; |
2062 | if (!NILP (parent) && NILP (w->combination_limit)) | |
1a13852e MR |
2063 | { |
2064 | p = XWINDOW (parent); | |
e74aeda8 DA |
2065 | if (WINDOWP (p->contents) && WINDOWP (w->contents) |
2066 | && p->horizontal == w->horizontal) | |
1a13852e MR |
2067 | /* WINDOW and PARENT are both either a vertical or a horizontal |
2068 | combination. */ | |
2069 | { | |
e74aeda8 DA |
2070 | horflag = WINDOW_HORIZONTAL_COMBINATION_P (w); |
2071 | child = w->contents; | |
1a13852e MR |
2072 | c = XWINDOW (child); |
2073 | ||
2074 | /* Splice WINDOW's children into its parent's children and | |
2075 | assign new normal sizes. */ | |
d3d50620 | 2076 | if (NILP (w->prev)) |
e74aeda8 | 2077 | wset_combination (p, horflag, child); |
1a13852e MR |
2078 | else |
2079 | { | |
e8c17b81 PE |
2080 | wset_prev (c, w->prev); |
2081 | wset_next (XWINDOW (w->prev), child); | |
1a13852e MR |
2082 | } |
2083 | ||
2084 | while (c) | |
2085 | { | |
e8c17b81 | 2086 | wset_parent (c, parent); |
1a13852e MR |
2087 | |
2088 | if (horflag) | |
e8c17b81 | 2089 | wset_normal_cols (c, |
5f24fa51 DA |
2090 | make_float ((double) c->total_cols |
2091 | / (double) p->total_cols)); | |
1a13852e | 2092 | else |
e8c17b81 | 2093 | wset_normal_lines (c, |
5f24fa51 DA |
2094 | make_float ((double) c->total_lines |
2095 | / (double) p->total_lines)); | |
1a13852e | 2096 | |
d3d50620 | 2097 | if (NILP (c->next)) |
1a13852e | 2098 | { |
d3d50620 | 2099 | if (!NILP (w->next)) |
1a13852e | 2100 | { |
e8c17b81 PE |
2101 | wset_next (c, w->next); |
2102 | wset_prev (XWINDOW (c->next), child); | |
1a13852e MR |
2103 | } |
2104 | ||
2105 | c = 0; | |
2106 | } | |
2107 | else | |
2108 | { | |
d3d50620 | 2109 | child = c->next; |
1a13852e MR |
2110 | c = XWINDOW (child); |
2111 | } | |
2112 | } | |
7ab12479 | 2113 | |
1a13852e | 2114 | /* WINDOW can be deleted now. */ |
e74aeda8 | 2115 | wset_combination (w, 0, Qnil); |
1a13852e MR |
2116 | } |
2117 | } | |
7ab12479 | 2118 | } |
6198ccd0 MR |
2119 | |
2120 | /* If WINDOW can be deleted, delete it. */ | |
4475bec4 | 2121 | static void |
6198ccd0 MR |
2122 | delete_deletable_window (Lisp_Object window) |
2123 | { | |
2124 | if (!NILP (call1 (Qwindow_deletable_p, window))) | |
2125 | call1 (Qdelete_window, window); | |
2126 | } | |
1a13852e | 2127 | \f |
67492200 GM |
2128 | /*********************************************************************** |
2129 | Window List | |
2130 | ***********************************************************************/ | |
2131 | ||
f95464e4 GM |
2132 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
2133 | pointer. This is a callback function for foreach_window, used in | |
496e208e | 2134 | the window_list function. */ |
67492200 GM |
2135 | |
2136 | static int | |
971de7fb | 2137 | add_window_to_list (struct window *w, void *user_data) |
67492200 | 2138 | { |
7d652d97 | 2139 | Lisp_Object *list = user_data; |
67492200 GM |
2140 | Lisp_Object window; |
2141 | XSETWINDOW (window, w); | |
212116d6 | 2142 | *list = Fcons (window, *list); |
67492200 GM |
2143 | return 1; |
2144 | } | |
2145 | ||
2146 | ||
2147 | /* Return a list of all windows, for use by next_window. If | |
2148 | Vwindow_list is a list, return that list. Otherwise, build a new | |
2149 | list, cache it in Vwindow_list, and return that. */ | |
2150 | ||
2151 | static Lisp_Object | |
971de7fb | 2152 | window_list (void) |
67492200 GM |
2153 | { |
2154 | if (!CONSP (Vwindow_list)) | |
2155 | { | |
5b04e9f9 | 2156 | Lisp_Object tail, frame; |
212116d6 | 2157 | |
67492200 | 2158 | Vwindow_list = Qnil; |
5b04e9f9 | 2159 | FOR_EACH_FRAME (tail, frame) |
212116d6 GM |
2160 | { |
2161 | Lisp_Object args[2]; | |
2162 | ||
2163 | /* We are visiting windows in canonical order, and add | |
2164 | new windows at the front of args[1], which means we | |
2165 | have to reverse this list at the end. */ | |
2166 | args[1] = Qnil; | |
5b04e9f9 | 2167 | foreach_window (XFRAME (frame), add_window_to_list, &args[1]); |
212116d6 GM |
2168 | args[0] = Vwindow_list; |
2169 | args[1] = Fnreverse (args[1]); | |
2170 | Vwindow_list = Fnconc (2, args); | |
2171 | } | |
67492200 | 2172 | } |
177c0ea7 | 2173 | |
67492200 GM |
2174 | return Vwindow_list; |
2175 | } | |
2176 | ||
2177 | ||
118ea242 GM |
2178 | /* Value is non-zero if WINDOW satisfies the constraints given by |
2179 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 2180 | |
118ea242 GM |
2181 | MINIBUF t means WINDOW may be minibuffer windows. |
2182 | `lambda' means WINDOW may not be a minibuffer window. | |
2183 | a window means a specific minibuffer window | |
67492200 | 2184 | |
118ea242 GM |
2185 | ALL_FRAMES t means search all frames, |
2186 | nil means search just current frame, | |
aa248733 MS |
2187 | `visible' means search just visible frames on the |
2188 | current terminal, | |
2189 | 0 means search visible and iconified frames on the | |
2190 | current terminal, | |
118ea242 GM |
2191 | a window means search the frame that window belongs to, |
2192 | a frame means consider windows on that frame, only. */ | |
67492200 | 2193 | |
d7e6881a DA |
2194 | static bool |
2195 | candidate_window_p (Lisp_Object window, Lisp_Object owindow, | |
2196 | Lisp_Object minibuf, Lisp_Object all_frames) | |
67492200 GM |
2197 | { |
2198 | struct window *w = XWINDOW (window); | |
d3d50620 | 2199 | struct frame *f = XFRAME (w->frame); |
d7e6881a | 2200 | bool candidate_p = 1; |
67492200 | 2201 | |
e74aeda8 | 2202 | if (!BUFFERP (w->contents)) |
67492200 GM |
2203 | candidate_p = 0; |
2204 | else if (MINI_WINDOW_P (w) | |
2205 | && (EQ (minibuf, Qlambda) | |
2206 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
2207 | { | |
2208 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
2209 | If it is a window, consider only that one. */ | |
2210 | candidate_p = 0; | |
2211 | } | |
118ea242 GM |
2212 | else if (EQ (all_frames, Qt)) |
2213 | candidate_p = 1; | |
67492200 | 2214 | else if (NILP (all_frames)) |
118ea242 | 2215 | { |
a54e2c05 | 2216 | eassert (WINDOWP (owindow)); |
d3d50620 | 2217 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); |
118ea242 | 2218 | } |
67492200 GM |
2219 | else if (EQ (all_frames, Qvisible)) |
2220 | { | |
de509a60 | 2221 | candidate_p = FRAME_VISIBLE_P (f) |
d3d50620 | 2222 | && (FRAME_TERMINAL (XFRAME (w->frame)) |
de509a60 SM |
2223 | == FRAME_TERMINAL (XFRAME (selected_frame))); |
2224 | ||
67492200 GM |
2225 | } |
2226 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
2227 | { | |
ca2d5566 SM |
2228 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
2229 | #ifdef HAVE_X_WINDOWS | |
2230 | /* Yuck!! If we've just created the frame and the | |
2231 | window-manager requested the user to place it | |
2232 | manually, the window may still not be considered | |
2233 | `visible'. I'd argue it should be at least | |
2234 | something like `iconified', but don't know how to do | |
2235 | that yet. --Stef */ | |
2236 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
2237 | && !f->output_data.x->has_been_visible) | |
2238 | #endif | |
de509a60 | 2239 | ) |
d3d50620 | 2240 | && (FRAME_TERMINAL (XFRAME (w->frame)) |
de509a60 | 2241 | == FRAME_TERMINAL (XFRAME (selected_frame))); |
67492200 | 2242 | } |
67492200 GM |
2243 | else if (WINDOWP (all_frames)) |
2244 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
d3d50620 DA |
2245 | || EQ (XWINDOW (all_frames)->frame, w->frame) |
2246 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 | 2247 | else if (FRAMEP (all_frames)) |
d3d50620 | 2248 | candidate_p = EQ (all_frames, w->frame); |
67492200 GM |
2249 | |
2250 | return candidate_p; | |
2251 | } | |
2252 | ||
2253 | ||
2254 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
aa248733 MS |
2255 | Fwindow_list. See candidate_window_p for the meaning of WINDOW, |
2256 | MINIBUF, and ALL_FRAMES. */ | |
67492200 GM |
2257 | |
2258 | static void | |
971de7fb | 2259 | decode_next_window_args (Lisp_Object *window, Lisp_Object *minibuf, Lisp_Object *all_frames) |
67492200 | 2260 | { |
b9e9df47 | 2261 | struct window *w = decode_live_window (*window); |
177c0ea7 | 2262 | |
b6a9e8b1 | 2263 | XSETWINDOW (*window, w); |
67492200 GM |
2264 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
2265 | does. */ | |
2266 | if (NILP (*minibuf)) | |
2267 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
2268 | else if (!EQ (*minibuf, Qt)) | |
2269 | *minibuf = Qlambda; | |
177c0ea7 | 2270 | |
67492200 GM |
2271 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
2272 | => count none of them, or a specific minibuffer window (the | |
2273 | active one) to count. */ | |
2274 | ||
2275 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
2276 | if (NILP (*all_frames)) | |
f00af5b1 | 2277 | *all_frames |
3a45383a | 2278 | = (!EQ (*minibuf, Qlambda) |
b9e9df47 | 2279 | ? FRAME_MINIBUF_WINDOW (XFRAME (w->frame)) |
3a45383a | 2280 | : Qnil); |
67492200 GM |
2281 | else if (EQ (*all_frames, Qvisible)) |
2282 | ; | |
0f8fe9a2 | 2283 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
2284 | ; |
2285 | else if (FRAMEP (*all_frames)) | |
2286 | ; | |
2287 | else if (!EQ (*all_frames, Qt)) | |
2288 | *all_frames = Qnil; | |
67492200 GM |
2289 | } |
2290 | ||
2291 | ||
ab6d1131 | 2292 | /* Return the next or previous window of WINDOW in cyclic ordering |
67492200 GM |
2293 | of windows. NEXT_P non-zero means return the next window. See the |
2294 | documentation string of next-window for the meaning of MINIBUF and | |
2295 | ALL_FRAMES. */ | |
2296 | ||
2297 | static Lisp_Object | |
971de7fb | 2298 | next_window (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames, int next_p) |
67492200 GM |
2299 | { |
2300 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 2301 | |
67492200 GM |
2302 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
2303 | return the first window on the frame. */ | |
2304 | if (FRAMEP (all_frames) | |
d3d50620 | 2305 | && !EQ (all_frames, XWINDOW (window)->frame)) |
67492200 | 2306 | return Fframe_first_window (all_frames); |
177c0ea7 | 2307 | |
212116d6 | 2308 | if (next_p) |
67492200 GM |
2309 | { |
2310 | Lisp_Object list; | |
177c0ea7 | 2311 | |
67492200 GM |
2312 | /* Find WINDOW in the list of all windows. */ |
2313 | list = Fmemq (window, window_list ()); | |
2314 | ||
2315 | /* Scan forward from WINDOW to the end of the window list. */ | |
2316 | if (CONSP (list)) | |
2317 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 2318 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2319 | break; |
2320 | ||
2321 | /* Scan from the start of the window list up to WINDOW. */ | |
2322 | if (!CONSP (list)) | |
2323 | for (list = Vwindow_list; | |
2324 | CONSP (list) && !EQ (XCAR (list), window); | |
2325 | list = XCDR (list)) | |
118ea242 | 2326 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2327 | break; |
2328 | ||
2329 | if (CONSP (list)) | |
2330 | window = XCAR (list); | |
2331 | } | |
2332 | else | |
2333 | { | |
2334 | Lisp_Object candidate, list; | |
177c0ea7 | 2335 | |
67492200 GM |
2336 | /* Scan through the list of windows for candidates. If there are |
2337 | candidate windows in front of WINDOW, the last one of these | |
2338 | is the one we want. If there are candidates following WINDOW | |
2339 | in the list, again the last one of these is the one we want. */ | |
2340 | candidate = Qnil; | |
2341 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
2342 | { | |
2343 | if (EQ (XCAR (list), window)) | |
2344 | { | |
2345 | if (WINDOWP (candidate)) | |
2346 | break; | |
2347 | } | |
118ea242 GM |
2348 | else if (candidate_window_p (XCAR (list), window, minibuf, |
2349 | all_frames)) | |
67492200 GM |
2350 | candidate = XCAR (list); |
2351 | } | |
2352 | ||
2353 | if (WINDOWP (candidate)) | |
2354 | window = candidate; | |
2355 | } | |
2356 | ||
2357 | return window; | |
2358 | } | |
7ab12479 | 2359 | |
7ab12479 | 2360 | |
a7ca3326 | 2361 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
a9b9b7f5 | 2362 | doc: /* Return live window after WINDOW in the cyclic ordering of windows. |
87e68db4 | 2363 | WINDOW must be a live window and defaults to the selected one. The |
9397e56f MR |
2364 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to |
2365 | consider. | |
2366 | ||
2367 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2368 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2369 | even if the minibuffer is not active. Any other value means do not | |
2370 | consider the minibuffer window even if the minibuffer is active. | |
2371 | ||
2372 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2373 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2374 | minibuffer counts, consider all windows on all frames that share that | |
2375 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2376 | meanings: | |
2377 | ||
2378 | - t means consider all windows on all existing frames. | |
2379 | ||
2380 | - `visible' means consider all windows on all visible frames. | |
2381 | ||
2382 | - 0 (the number zero) means consider all windows on all visible and | |
2383 | iconified frames. | |
2384 | ||
2385 | - A frame means consider all windows on that frame only. | |
ab6d1131 | 2386 | |
ab6d1131 | 2387 | Anything else means consider all windows on WINDOW's frame and no |
9397e56f | 2388 | others. |
fdb82f93 PJ |
2389 | |
2390 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
2391 | `next-window' to iterate through the entire cycle of acceptable | |
2392 | windows, eventually ending up back at the window you started with. | |
2393 | `previous-window' traverses the same cycle, in the reverse order. */) | |
5842a27b | 2394 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2395 | { |
67492200 | 2396 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
2397 | } |
2398 | ||
67492200 | 2399 | |
26f6279d | 2400 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
a9b9b7f5 | 2401 | doc: /* Return live window before WINDOW in the cyclic ordering of windows. |
9397e56f MR |
2402 | WINDOW must be a live window and defaults to the selected one. The |
2403 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to | |
2404 | consider. | |
2405 | ||
2406 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2407 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2408 | even if the minibuffer is not active. Any other value means do not | |
2409 | consider the minibuffer window even if the minibuffer is active. | |
2410 | ||
2411 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2412 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2413 | minibuffer counts, consider all windows on all frames that share that | |
2414 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2415 | meanings: | |
2416 | ||
2417 | - t means consider all windows on all existing frames. | |
2418 | ||
2419 | - `visible' means consider all windows on all visible frames. | |
2420 | ||
2421 | - 0 (the number zero) means consider all windows on all visible and | |
2422 | iconified frames. | |
2423 | ||
2424 | - A frame means consider all windows on that frame only. | |
2425 | ||
2426 | Anything else means consider all windows on WINDOW's frame and no | |
2427 | others. | |
ab6d1131 MR |
2428 | |
2429 | If you use consistent values for MINIBUF and ALL-FRAMES, you can | |
2430 | use `previous-window' to iterate through the entire cycle of | |
2431 | acceptable windows, eventually ending up back at the window you | |
2432 | started with. `next-window' traverses the same cycle, in the | |
2433 | reverse order. */) | |
5842a27b | 2434 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2435 | { |
67492200 | 2436 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2437 | } |
2438 | ||
67492200 | 2439 | |
ab6d1131 | 2440 | /* Return a list of windows in cyclic ordering. Arguments are like |
cd2904bd GM |
2441 | for `next-window'. */ |
2442 | ||
2443 | static Lisp_Object | |
971de7fb | 2444 | window_list_1 (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 | 2445 | { |
403de3b4 | 2446 | Lisp_Object tail, list, rest; |
67492200 GM |
2447 | |
2448 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2449 | list = Qnil; | |
177c0ea7 | 2450 | |
67492200 | 2451 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2452 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2453 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2454 | |
403de3b4 RS |
2455 | /* Rotate the list to start with WINDOW. */ |
2456 | list = Fnreverse (list); | |
2457 | rest = Fmemq (window, list); | |
2458 | if (!NILP (rest) && !EQ (rest, list)) | |
2459 | { | |
1725a7c9 | 2460 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2461 | ; |
2462 | XSETCDR (tail, Qnil); | |
2463 | list = nconc2 (rest, list); | |
2464 | } | |
2465 | return list; | |
67492200 GM |
2466 | } |
2467 | ||
2468 | ||
abde8f8c MR |
2469 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, |
2470 | doc: /* Return a list of windows on FRAME, starting with WINDOW. | |
2471 | FRAME nil or omitted means use the selected frame. | |
49745b39 | 2472 | WINDOW nil or omitted means use the window selected within FRAME. |
abde8f8c MR |
2473 | MINIBUF t means include the minibuffer window, even if it isn't active. |
2474 | MINIBUF nil or omitted means include the minibuffer window only | |
2475 | if it's active. | |
2476 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2477 | (Lisp_Object frame, Lisp_Object minibuf, Lisp_Object window) | |
2478 | { | |
2479 | if (NILP (window)) | |
e69b0960 | 2480 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
abde8f8c MR |
2481 | CHECK_WINDOW (window); |
2482 | if (NILP (frame)) | |
2483 | frame = selected_frame; | |
2484 | ||
d3d50620 | 2485 | if (!EQ (frame, XWINDOW (window)->frame)) |
abde8f8c MR |
2486 | error ("Window is on a different frame"); |
2487 | ||
2488 | return window_list_1 (window, minibuf, frame); | |
2489 | } | |
2490 | ||
2491 | ||
1a13852e MR |
2492 | DEFUN ("window-list-1", Fwindow_list_1, Swindow_list_1, 0, 3, 0, |
2493 | doc: /* Return a list of all live windows. | |
2494 | WINDOW specifies the first window to list and defaults to the selected | |
2495 | window. | |
2496 | ||
2497 | Optional argument MINIBUF nil or omitted means consider the minibuffer | |
2498 | window only if the minibuffer is active. MINIBUF t means consider the | |
2499 | minibuffer window even if the minibuffer is not active. Any other value | |
2500 | means do not consider the minibuffer window even if the minibuffer is | |
2501 | active. | |
2502 | ||
2503 | Optional argument ALL-FRAMES nil or omitted means consider all windows | |
2504 | on WINDOW's frame, plus the minibuffer window if specified by the | |
2505 | MINIBUF argument. If the minibuffer counts, consider all windows on all | |
2506 | frames that share that minibuffer too. The following non-nil values of | |
2507 | ALL-FRAMES have special meanings: | |
2508 | ||
2509 | - t means consider all windows on all existing frames. | |
2510 | ||
2511 | - `visible' means consider all windows on all visible frames. | |
2512 | ||
2513 | - 0 (the number zero) means consider all windows on all visible and | |
2514 | iconified frames. | |
2515 | ||
2516 | - A frame means consider all windows on that frame only. | |
2517 | ||
2518 | Anything else means consider all windows on WINDOW's frame and no | |
2519 | others. | |
2520 | ||
2521 | If WINDOW is not on the list of windows returned, some other window will | |
8350f087 | 2522 | be listed first but no error is signaled. */) |
1a13852e MR |
2523 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
2524 | { | |
2525 | return window_list_1 (window, minibuf, all_frames); | |
2526 | } | |
7ab12479 JB |
2527 | \f |
2528 | /* Look at all windows, performing an operation specified by TYPE | |
2529 | with argument OBJ. | |
75d8f668 | 2530 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2531 | Qnil, look at just the selected frame; |
89bca612 | 2532 | Qvisible, look at visible frames; |
75d8f668 | 2533 | a frame, just look at windows on that frame. |
85fe3b5e | 2534 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2535 | |
2536 | enum window_loop | |
2537 | { | |
2538 | WINDOW_LOOP_UNUSED, | |
9397e56f MR |
2539 | GET_BUFFER_WINDOW, /* Arg is buffer */ |
2540 | REPLACE_BUFFER_IN_WINDOWS_SAFELY, /* Arg is buffer */ | |
2541 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ | |
e74aeda8 | 2542 | CHECK_ALL_WINDOWS /* Arg is ignored */ |
7ab12479 JB |
2543 | }; |
2544 | ||
2545 | static Lisp_Object | |
971de7fb | 2546 | window_loop (enum window_loop type, Lisp_Object obj, int mini, Lisp_Object frames) |
7ab12479 | 2547 | { |
118ea242 | 2548 | Lisp_Object window, windows, best_window, frame_arg; |
9397e56f | 2549 | int frame_best_window_flag = 0; |
118ea242 | 2550 | struct frame *f; |
ffdc852d | 2551 | struct gcpro gcpro1; |
177c0ea7 | 2552 | |
44fa5b1e JB |
2553 | /* If we're only looping through windows on a particular frame, |
2554 | frame points to that frame. If we're looping through windows | |
2555 | on all frames, frame is 0. */ | |
2556 | if (FRAMEP (frames)) | |
118ea242 | 2557 | f = XFRAME (frames); |
44fa5b1e | 2558 | else if (NILP (frames)) |
118ea242 | 2559 | f = SELECTED_FRAME (); |
7ab12479 | 2560 | else |
118ea242 | 2561 | f = NULL; |
177c0ea7 | 2562 | |
118ea242 | 2563 | if (f) |
89bca612 | 2564 | frame_arg = Qlambda; |
0f8fe9a2 | 2565 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2566 | frame_arg = frames; |
89bca612 RS |
2567 | else if (EQ (frames, Qvisible)) |
2568 | frame_arg = frames; | |
118ea242 GM |
2569 | else |
2570 | frame_arg = Qt; | |
7ab12479 | 2571 | |
89bca612 RS |
2572 | /* frame_arg is Qlambda to stick to one frame, |
2573 | Qvisible to consider all visible frames, | |
2574 | or Qt otherwise. */ | |
2575 | ||
7ab12479 | 2576 | /* Pick a window to start with. */ |
017b2bad | 2577 | if (WINDOWP (obj)) |
118ea242 GM |
2578 | window = obj; |
2579 | else if (f) | |
2580 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2581 | else |
118ea242 | 2582 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2583 | |
cd2904bd | 2584 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2585 | GCPRO1 (windows); |
7ab12479 | 2586 | best_window = Qnil; |
118ea242 | 2587 | |
e67a1dea | 2588 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2589 | { |
118ea242 | 2590 | struct window *w; |
177c0ea7 | 2591 | |
118ea242 GM |
2592 | window = XCAR (windows); |
2593 | w = XWINDOW (window); | |
177c0ea7 | 2594 | |
118ea242 GM |
2595 | /* Note that we do not pay attention here to whether the frame |
2596 | is visible, since Fwindow_list skips non-visible frames if | |
2597 | that is desired, under the control of frame_arg. */ | |
2598 | if (!MINI_WINDOW_P (w) | |
9397e56f MR |
2599 | /* For REPLACE_BUFFER_IN_WINDOWS_SAFELY, we must always |
2600 | consider all windows. */ | |
2601 | || type == REPLACE_BUFFER_IN_WINDOWS_SAFELY | |
7ab12479 JB |
2602 | || (mini && minibuf_level > 0)) |
2603 | switch (type) | |
2604 | { | |
2605 | case GET_BUFFER_WINDOW: | |
e74aeda8 | 2606 | if (EQ (w->contents, obj) |
9397e56f MR |
2607 | /* Don't find any minibuffer window except the one that |
2608 | is currently in use. */ | |
2609 | && (MINI_WINDOW_P (w) ? EQ (window, minibuf_window) : 1)) | |
118ea242 | 2610 | { |
9397e56f MR |
2611 | if (EQ (window, selected_window)) |
2612 | /* Preferably return the selected window. */ | |
ca2d5566 | 2613 | RETURN_UNGCPRO (window); |
d3d50620 | 2614 | else if (EQ (XWINDOW (window)->frame, selected_frame) |
9397e56f MR |
2615 | && !frame_best_window_flag) |
2616 | /* Prefer windows on the current frame (but don't | |
2617 | choose another one if we have one already). */ | |
118ea242 | 2618 | { |
9397e56f MR |
2619 | best_window = window; |
2620 | frame_best_window_flag = 1; | |
7ab12479 | 2621 | } |
9397e56f MR |
2622 | else if (NILP (best_window)) |
2623 | best_window = window; | |
7ab12479 JB |
2624 | } |
2625 | break; | |
2626 | ||
9397e56f MR |
2627 | case REPLACE_BUFFER_IN_WINDOWS_SAFELY: |
2628 | /* We could simply check whether the buffer shown by window | |
2629 | is live, and show another buffer in case it isn't. */ | |
e74aeda8 | 2630 | if (EQ (w->contents, obj)) |
7ab12479 | 2631 | { |
9397e56f | 2632 | /* Undedicate WINDOW. */ |
e8c17b81 | 2633 | wset_dedicated (w, Qnil); |
9397e56f MR |
2634 | /* Make WINDOW show the buffer returned by |
2635 | other_buffer_safely, don't run any hooks. */ | |
2636 | set_window_buffer | |
e74aeda8 | 2637 | (window, other_buffer_safely (w->contents), 0, 0); |
9397e56f MR |
2638 | /* If WINDOW is the selected window, make its buffer |
2639 | current. But do so only if the window shows the | |
2640 | current buffer (Bug#6454). */ | |
2641 | if (EQ (window, selected_window) | |
e74aeda8 DA |
2642 | && XBUFFER (w->contents) == current_buffer) |
2643 | Fset_buffer (w->contents); | |
7ab12479 JB |
2644 | } |
2645 | break; | |
3f8ab7bd | 2646 | |
6b61353c | 2647 | case REDISPLAY_BUFFER_WINDOWS: |
e74aeda8 | 2648 | if (EQ (w->contents, obj)) |
6b61353c KH |
2649 | { |
2650 | mark_window_display_accurate (window, 0); | |
c98ff5dd | 2651 | w->update_mode_line = 1; |
6b61353c KH |
2652 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; |
2653 | ++update_mode_lines; | |
2654 | best_window = window; | |
2655 | } | |
2656 | break; | |
2657 | ||
e74aeda8 DA |
2658 | /* Check for a leaf window that has a killed buffer |
2659 | or broken markers. */ | |
3f8ab7bd | 2660 | case CHECK_ALL_WINDOWS: |
e74aeda8 DA |
2661 | if (BUFFERP (w->contents)) |
2662 | { | |
2663 | struct buffer *b = XBUFFER (w->contents); | |
2664 | ||
2665 | if (!BUFFER_LIVE_P (b)) | |
2666 | emacs_abort (); | |
2667 | if (!MARKERP (w->start) || XMARKER (w->start)->buffer != b) | |
2668 | emacs_abort (); | |
2669 | if (!MARKERP (w->pointm) || XMARKER (w->pointm)->buffer != b) | |
2670 | emacs_abort (); | |
2671 | } | |
118ea242 | 2672 | break; |
6bbd7a29 GM |
2673 | |
2674 | case WINDOW_LOOP_UNUSED: | |
2675 | break; | |
7ab12479 | 2676 | } |
7ab12479 | 2677 | } |
7ab12479 | 2678 | |
118ea242 | 2679 | UNGCPRO; |
7ab12479 | 2680 | return best_window; |
37962e60 | 2681 | } |
605be8af | 2682 | |
3f8ab7bd RS |
2683 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2684 | ||
e3b27b31 | 2685 | extern void check_all_windows (void) EXTERNALLY_VISIBLE; |
233a4a2c | 2686 | void |
971de7fb | 2687 | check_all_windows (void) |
3f8ab7bd RS |
2688 | { |
2689 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2690 | } | |
2691 | ||
a7ca3326 | 2692 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 0, 2, 0, |
fec89261 | 2693 | doc: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none. |
496e208e MR |
2694 | BUFFER-OR-NAME may be a buffer or a buffer name and defaults to |
2695 | the current buffer. | |
2696 | ||
2697 | The optional argument ALL-FRAMES specifies the frames to consider: | |
2698 | ||
2699 | - t means consider all windows on all existing frames. | |
2700 | ||
2701 | - `visible' means consider all windows on all visible frames. | |
2702 | ||
2703 | - 0 (the number zero) means consider all windows on all visible | |
2704 | and iconified frames. | |
2705 | ||
2706 | - A frame means consider all windows on that frame only. | |
2707 | ||
2708 | Any other value of ALL-FRAMES means consider all windows on the | |
2709 | selected frame and no others. */) | |
2710 | (Lisp_Object buffer_or_name, Lisp_Object all_frames) | |
7ab12479 | 2711 | { |
fec89261 MR |
2712 | Lisp_Object buffer; |
2713 | ||
2714 | if (NILP (buffer_or_name)) | |
2715 | buffer = Fcurrent_buffer (); | |
2716 | else | |
2717 | buffer = Fget_buffer (buffer_or_name); | |
2718 | ||
017b2bad | 2719 | if (BUFFERP (buffer)) |
496e208e | 2720 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, all_frames); |
7ab12479 JB |
2721 | else |
2722 | return Qnil; | |
2723 | } | |
2724 | ||
4b66faf3 | 2725 | static Lisp_Object |
1a13852e MR |
2726 | resize_root_window (Lisp_Object window, Lisp_Object delta, Lisp_Object horizontal, Lisp_Object ignore) |
2727 | { | |
5386012d | 2728 | return call4 (Qwindow_resize_root_window, window, delta, horizontal, ignore); |
1a13852e MR |
2729 | } |
2730 | ||
2731 | ||
2732 | DEFUN ("delete-other-windows-internal", Fdelete_other_windows_internal, | |
2733 | Sdelete_other_windows_internal, 0, 2, "", | |
2734 | doc: /* Make WINDOW fill its frame. | |
52162052 MR |
2735 | Only the frame WINDOW is on is affected. WINDOW must be a valid window |
2736 | and defaults to the selected one. | |
1a13852e | 2737 | |
be7f5545 MR |
2738 | Optional argument ROOT, if non-nil, must specify an internal window such |
2739 | that WINDOW is in its window subtree. If this is the case, replace ROOT | |
2740 | by WINDOW and leave alone any windows not part of ROOT's subtree. | |
1a13852e MR |
2741 | |
2742 | When WINDOW is live try to reduce display jumps by keeping the text | |
2743 | previously visible in WINDOW in the same place on the frame. Doing this | |
2744 | depends on the value of (window-start WINDOW), so if calling this | |
2745 | function in a program gives strange scrolling, make sure the | |
2746 | window-start value is reasonable when this function is called. */) | |
2747 | (Lisp_Object window, Lisp_Object root) | |
2748 | { | |
2749 | struct window *w, *r, *s; | |
2750 | struct frame *f; | |
46a4ce9e | 2751 | Lisp_Object sibling, pwindow, swindow IF_LINT (= Qnil), delta; |
c54aa166 | 2752 | ptrdiff_t startpos IF_LINT (= 0), startbyte IF_LINT (= 0); |
46a4ce9e | 2753 | int top IF_LINT (= 0), new_top, resize_failed; |
1a13852e | 2754 | |
52162052 | 2755 | w = decode_valid_window (window); |
1a13852e | 2756 | XSETWINDOW (window, w); |
d3d50620 | 2757 | f = XFRAME (w->frame); |
1a13852e MR |
2758 | |
2759 | if (NILP (root)) | |
2760 | /* ROOT is the frame's root window. */ | |
2761 | { | |
2762 | root = FRAME_ROOT_WINDOW (f); | |
2763 | r = XWINDOW (root); | |
2764 | } | |
2765 | else | |
2766 | /* ROOT must be an ancestor of WINDOW. */ | |
2767 | { | |
52162052 | 2768 | r = decode_valid_window (root); |
d3d50620 | 2769 | pwindow = XWINDOW (window)->parent; |
1a13852e MR |
2770 | while (!NILP (pwindow)) |
2771 | if (EQ (pwindow, root)) | |
2772 | break; | |
2773 | else | |
d3d50620 | 2774 | pwindow = XWINDOW (pwindow)->parent; |
1a13852e MR |
2775 | if (!EQ (pwindow, root)) |
2776 | error ("Specified root is not an ancestor of specified window"); | |
2777 | } | |
2778 | ||
2779 | if (EQ (window, root)) | |
2780 | /* A noop. */ | |
2781 | return Qnil; | |
2782 | /* I don't understand the "top > 0" part below. If we deal with a | |
2783 | standalone minibuffer it would have been caught by the preceding | |
2784 | test. */ | |
2785 | else if (MINI_WINDOW_P (w)) /* && top > 0) */ | |
2786 | error ("Can't expand minibuffer to full frame"); | |
2787 | ||
e74aeda8 | 2788 | if (BUFFERP (w->contents)) |
1a13852e | 2789 | { |
d3d50620 | 2790 | startpos = marker_position (w->start); |
c54aa166 | 2791 | startbyte = marker_byte_position (w->start); |
1a13852e MR |
2792 | top = WINDOW_TOP_EDGE_LINE (w) |
2793 | - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2794 | /* Make sure WINDOW is the frame's selected window. */ | |
2795 | if (!EQ (window, FRAME_SELECTED_WINDOW (f))) | |
2796 | { | |
d3d50620 | 2797 | if (EQ (selected_frame, w->frame)) |
1a13852e MR |
2798 | Fselect_window (window, Qnil); |
2799 | else | |
f00af5b1 | 2800 | fset_selected_window (f, window); |
1a13852e MR |
2801 | } |
2802 | } | |
2803 | else | |
2804 | { | |
be7f5545 MR |
2805 | /* See if the frame's selected window is a part of the window |
2806 | subtree rooted at WINDOW, by finding all the selected window's | |
2807 | parents and comparing each one with WINDOW. If it isn't we | |
2808 | need a new selected window for this frame. */ | |
1a13852e MR |
2809 | swindow = FRAME_SELECTED_WINDOW (f); |
2810 | while (1) | |
2811 | { | |
2812 | pwindow = swindow; | |
2813 | while (!NILP (pwindow) && !EQ (window, pwindow)) | |
d3d50620 | 2814 | pwindow = XWINDOW (pwindow)->parent; |
1a13852e MR |
2815 | |
2816 | if (EQ (window, pwindow)) | |
2817 | /* If WINDOW is an ancestor of SWINDOW, then SWINDOW is ok | |
2818 | as the new selected window. */ | |
2819 | break; | |
2820 | else | |
2821 | /* Else try the previous window of SWINDOW. */ | |
2822 | swindow = Fprevious_window (swindow, Qlambda, Qnil); | |
2823 | } | |
2824 | ||
2825 | if (!EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
2826 | { | |
d3d50620 | 2827 | if (EQ (selected_frame, w->frame)) |
1a13852e MR |
2828 | Fselect_window (swindow, Qnil); |
2829 | else | |
f00af5b1 | 2830 | fset_selected_window (f, swindow); |
1a13852e MR |
2831 | } |
2832 | } | |
2833 | ||
4d7e6e51 | 2834 | block_input (); |
4c5501e9 EZ |
2835 | if (!FRAME_INITIAL_P (f)) |
2836 | { | |
9fed9729 | 2837 | Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f); |
4c5501e9 EZ |
2838 | |
2839 | /* We are going to free the glyph matrices of WINDOW, and with | |
2840 | that we might lose any information about glyph rows that have | |
2841 | some of their glyphs highlighted in mouse face. (These rows | |
2842 | are marked with a non-zero mouse_face_p flag.) If WINDOW | |
2843 | indeed has some glyphs highlighted in mouse face, signal to | |
2844 | frame's up-to-date hook that mouse highlight was overwritten, | |
2845 | so that it will arrange for redisplaying the highlight. */ | |
2846 | if (EQ (hlinfo->mouse_face_window, window)) | |
9fed9729 | 2847 | reset_mouse_highlight (hlinfo); |
a6b1c7cc | 2848 | } |
1a13852e MR |
2849 | free_window_matrices (r); |
2850 | ||
2851 | windows_or_buffers_changed++; | |
2852 | Vwindow_list = Qnil; | |
2853 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
46a4ce9e | 2854 | resize_failed = 0; |
1a13852e | 2855 | |
e74aeda8 | 2856 | if (!WINDOW_LEAF_P (w)) |
1a13852e | 2857 | { |
be7f5545 | 2858 | /* Resize child windows vertically. */ |
5f24fa51 DA |
2859 | XSETINT (delta, r->total_lines - w->total_lines); |
2860 | w->top_line = r->top_line; | |
1a13852e | 2861 | resize_root_window (window, delta, Qnil, Qnil); |
d615d6d2 MR |
2862 | if (window_resize_check (w, 0)) |
2863 | window_resize_apply (w, 0); | |
1a13852e MR |
2864 | else |
2865 | { | |
2866 | resize_root_window (window, delta, Qnil, Qt); | |
d615d6d2 MR |
2867 | if (window_resize_check (w, 0)) |
2868 | window_resize_apply (w, 0); | |
1a13852e MR |
2869 | else |
2870 | resize_failed = 1; | |
2871 | } | |
2872 | ||
be7f5545 | 2873 | /* Resize child windows horizontally. */ |
1a13852e MR |
2874 | if (!resize_failed) |
2875 | { | |
5f24fa51 DA |
2876 | w->left_col = r->left_col; |
2877 | XSETINT (delta, r->total_cols - w->total_cols); | |
1a13852e | 2878 | resize_root_window (window, delta, Qt, Qnil); |
d615d6d2 MR |
2879 | if (window_resize_check (w, 1)) |
2880 | window_resize_apply (w, 1); | |
1a13852e MR |
2881 | else |
2882 | { | |
2883 | resize_root_window (window, delta, Qt, Qt); | |
d615d6d2 MR |
2884 | if (window_resize_check (w, 1)) |
2885 | window_resize_apply (w, 1); | |
1a13852e MR |
2886 | else |
2887 | resize_failed = 1; | |
2888 | } | |
2889 | } | |
2890 | ||
2891 | if (resize_failed) | |
2892 | /* Play safe, if we still can ... */ | |
2893 | { | |
2894 | window = swindow; | |
2895 | w = XWINDOW (window); | |
2896 | } | |
2897 | } | |
2898 | ||
2899 | /* Cleanly unlink WINDOW from window-tree. */ | |
d3d50620 | 2900 | if (!NILP (w->prev)) |
1a13852e MR |
2901 | /* Get SIBLING above (on the left of) WINDOW. */ |
2902 | { | |
d3d50620 | 2903 | sibling = w->prev; |
1a13852e | 2904 | s = XWINDOW (sibling); |
e8c17b81 | 2905 | wset_next (s, w->next); |
d3d50620 | 2906 | if (!NILP (s->next)) |
e8c17b81 | 2907 | wset_prev (XWINDOW (s->next), sibling); |
1a13852e MR |
2908 | } |
2909 | else | |
2910 | /* Get SIBLING below (on the right of) WINDOW. */ | |
2911 | { | |
d3d50620 | 2912 | sibling = w->next; |
1a13852e | 2913 | s = XWINDOW (sibling); |
e8c17b81 | 2914 | wset_prev (s, Qnil); |
e74aeda8 DA |
2915 | wset_combination (XWINDOW (w->parent), |
2916 | XWINDOW (w->parent)->horizontal, sibling); | |
1a13852e MR |
2917 | } |
2918 | ||
be7f5545 | 2919 | /* Delete ROOT and all child windows of ROOT. */ |
e74aeda8 | 2920 | if (WINDOWP (r->contents)) |
1a13852e | 2921 | { |
e74aeda8 DA |
2922 | delete_all_child_windows (r->contents); |
2923 | wset_combination (r, 0, Qnil); | |
1a13852e MR |
2924 | } |
2925 | ||
2926 | replace_window (root, window, 1); | |
2927 | ||
7ffe7ef6 | 2928 | /* This must become SWINDOW anyway ....... */ |
e74aeda8 | 2929 | if (BUFFERP (w->contents) && !resize_failed) |
1a13852e MR |
2930 | { |
2931 | /* Try to minimize scrolling, by setting the window start to the | |
2932 | point will cause the text at the old window start to be at the | |
2933 | same place on the frame. But don't try to do this if the | |
2934 | window start is outside the visible portion (as might happen | |
2935 | when the display is not current, due to typeahead). */ | |
2936 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2937 | if (new_top != top | |
e74aeda8 DA |
2938 | && startpos >= BUF_BEGV (XBUFFER (w->contents)) |
2939 | && startpos <= BUF_ZV (XBUFFER (w->contents))) | |
1a13852e MR |
2940 | { |
2941 | struct position pos; | |
2942 | struct buffer *obuf = current_buffer; | |
2943 | ||
e74aeda8 | 2944 | Fset_buffer (w->contents); |
1a13852e MR |
2945 | /* This computation used to temporarily move point, but that |
2946 | can have unwanted side effects due to text properties. */ | |
c54aa166 | 2947 | pos = *vmotion (startpos, startbyte, -top, w); |
1a13852e | 2948 | |
e74aeda8 | 2949 | set_marker_both (w->start, w->contents, pos.bufpos, pos.bytepos); |
9d93ce29 | 2950 | w->window_end_valid = 0; |
c98ff5dd DA |
2951 | w->start_at_line_beg = (pos.bytepos == BEGV_BYTE |
2952 | || FETCH_BYTE (pos.bytepos - 1) == '\n'); | |
1a13852e MR |
2953 | /* We need to do this, so that the window-scroll-functions |
2954 | get called. */ | |
c98ff5dd | 2955 | w->optional_new_start = 1; |
1a13852e MR |
2956 | |
2957 | set_buffer_internal (obuf); | |
2958 | } | |
2959 | } | |
2960 | ||
2961 | adjust_glyphs (f); | |
4d7e6e51 | 2962 | unblock_input (); |
1a13852e MR |
2963 | |
2964 | run_window_configuration_change_hook (f); | |
2965 | ||
2966 | return Qnil; | |
2967 | } | |
2968 | ||
2969 | ||
9397e56f MR |
2970 | void |
2971 | replace_buffer_in_windows (Lisp_Object buffer) | |
7ab12479 | 2972 | { |
9397e56f | 2973 | call1 (Qreplace_buffer_in_windows, buffer); |
7ab12479 JB |
2974 | } |
2975 | ||
c6afe371 DA |
2976 | /* If BUFFER is shown in a window, safely replace it with some other |
2977 | buffer in all windows of all frames, even those on other keyboards. */ | |
ff58478b RS |
2978 | |
2979 | void | |
9397e56f | 2980 | replace_buffer_in_windows_safely (Lisp_Object buffer) |
ff58478b | 2981 | { |
c6afe371 DA |
2982 | if (buffer_window_count (XBUFFER (buffer))) |
2983 | { | |
2984 | Lisp_Object tail, frame; | |
ff58478b | 2985 | |
c6afe371 DA |
2986 | /* A single call to window_loop won't do the job because it only |
2987 | considers frames on the current keyboard. So loop manually over | |
2988 | frames, and handle each one. */ | |
2989 | FOR_EACH_FRAME (tail, frame) | |
2990 | window_loop (REPLACE_BUFFER_IN_WINDOWS_SAFELY, buffer, 1, frame); | |
2991 | } | |
ff58478b | 2992 | } |
c6afe371 | 2993 | |
a481b3ea JB |
2994 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the |
2995 | minimum allowable size. */ | |
5500c422 | 2996 | |
605be8af | 2997 | void |
a10c8269 | 2998 | check_frame_size (struct frame *frame, int *rows, int *cols) |
a481b3ea | 2999 | { |
628df3bf | 3000 | /* For height, we have to see: |
54b8bcb5 RS |
3001 | how many windows the frame has at minimum (one or two), |
3002 | and whether it has a menu bar or other special stuff at the top. */ | |
3003 | int min_height | |
3004 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
3005 | ? MIN_SAFE_WINDOW_HEIGHT | |
3006 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 3007 | |
5500c422 GM |
3008 | if (FRAME_TOP_MARGIN (frame) > 0) |
3009 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
3010 | |
3011 | if (*rows < min_height) | |
3012 | *rows = min_height; | |
3013 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
3014 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
3015 | } | |
3016 | ||
79fd290e | 3017 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
3018 | Return 1 if window width is ok after adjustment; 0 if window |
3019 | is still too narrow. */ | |
3020 | ||
3021 | static int | |
971de7fb | 3022 | adjust_window_margins (struct window *w) |
949cf20f KS |
3023 | { |
3024 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
3025 | - WINDOW_FRINGE_COLS (w) | |
3026 | - WINDOW_SCROLL_BAR_COLS (w)); | |
3027 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
3028 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
3029 | ||
3030 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
3031 | return 1; | |
3032 | ||
3033 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
3034 | return 0; | |
3035 | ||
3036 | /* Window's text area is too narrow, but reducing the window | |
3037 | margins will fix that. */ | |
3038 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
3039 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
3040 | { | |
3041 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
eeaf9bf3 | 3042 | w->left_margin_cols = w->right_margin_cols = margin_cols / 2; |
949cf20f | 3043 | else |
eeaf9bf3 | 3044 | w->right_margin_cols = margin_cols; |
949cf20f KS |
3045 | } |
3046 | else | |
eeaf9bf3 | 3047 | w->left_margin_cols = margin_cols; |
949cf20f KS |
3048 | return 1; |
3049 | } | |
562dd5e9 | 3050 | \f |
9397e56f MR |
3051 | /* The following three routines are needed for running a window's |
3052 | configuration change hook. */ | |
562dd5e9 MR |
3053 | static void |
3054 | run_funs (Lisp_Object funs) | |
3055 | { | |
3056 | for (; CONSP (funs); funs = XCDR (funs)) | |
3057 | if (!EQ (XCAR (funs), Qt)) | |
3058 | call0 (XCAR (funs)); | |
3059 | } | |
6b61353c | 3060 | |
27e498e6 | 3061 | static void |
9397e56f MR |
3062 | select_window_norecord (Lisp_Object window) |
3063 | { | |
27e498e6 PE |
3064 | if (WINDOW_LIVE_P (window)) |
3065 | Fselect_window (window, Qt); | |
9397e56f MR |
3066 | } |
3067 | ||
27e498e6 | 3068 | static void |
9397e56f MR |
3069 | select_frame_norecord (Lisp_Object frame) |
3070 | { | |
27e498e6 PE |
3071 | if (FRAME_LIVE_P (XFRAME (frame))) |
3072 | Fselect_frame (frame, Qt); | |
9397e56f | 3073 | } |
6b61353c | 3074 | |
562dd5e9 MR |
3075 | void |
3076 | run_window_configuration_change_hook (struct frame *f) | |
3077 | { | |
d311d28c | 3078 | ptrdiff_t count = SPECPDL_INDEX (); |
562dd5e9 MR |
3079 | Lisp_Object frame, global_wcch |
3080 | = Fdefault_value (Qwindow_configuration_change_hook); | |
3081 | XSETFRAME (frame, f); | |
6b61353c | 3082 | |
d1f55f16 | 3083 | if (NILP (Vrun_hooks) || !NILP (inhibit_lisp_code)) |
562dd5e9 | 3084 | return; |
6b61353c | 3085 | |
562dd5e9 MR |
3086 | /* Use the right buffer. Matters when running the local hooks. */ |
3087 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
6b61353c | 3088 | { |
66322887 | 3089 | record_unwind_current_buffer (); |
562dd5e9 MR |
3090 | Fset_buffer (Fwindow_buffer (Qnil)); |
3091 | } | |
6a44ffb3 | 3092 | |
1a13852e MR |
3093 | if (SELECTED_FRAME () != f) |
3094 | { | |
d2a95ffb | 3095 | record_unwind_protect (select_frame_norecord, selected_frame); |
1a13852e MR |
3096 | select_frame_norecord (frame); |
3097 | } | |
3098 | ||
6a44ffb3 SM |
3099 | /* Look for buffer-local values. */ |
3100 | { | |
3101 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
3102 | for (; CONSP (windows); windows = XCDR (windows)) | |
3103 | { | |
3104 | Lisp_Object window = XCAR (windows); | |
3105 | Lisp_Object buffer = Fwindow_buffer (window); | |
3106 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
3107 | buffer))) | |
3108 | { | |
d311d28c | 3109 | ptrdiff_t inner_count = SPECPDL_INDEX (); |
d2a95ffb | 3110 | record_unwind_protect (select_window_norecord, selected_window); |
6a44ffb3 SM |
3111 | select_window_norecord (window); |
3112 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
3113 | buffer)); | |
46a4ce9e | 3114 | unbind_to (inner_count, Qnil); |
fec89261 | 3115 | } |
6a44ffb3 SM |
3116 | } |
3117 | } | |
047aaeb9 | 3118 | |
6a44ffb3 SM |
3119 | run_funs (global_wcch); |
3120 | unbind_to (count, Qnil); | |
ef264c42 SM |
3121 | } |
3122 | ||
1a13852e | 3123 | DEFUN ("run-window-configuration-change-hook", Frun_window_configuration_change_hook, |
d9f07150 | 3124 | Srun_window_configuration_change_hook, 0, 1, 0, |
68f8f1c0 | 3125 | doc: /* Run `window-configuration-change-hook' for FRAME. |
d9f07150 | 3126 | If FRAME is omitted or nil, it defaults to the selected frame. */) |
c4b6914d | 3127 | (Lisp_Object frame) |
1a13852e | 3128 | { |
d9f07150 | 3129 | run_window_configuration_change_hook (decode_live_frame (frame)); |
1a13852e MR |
3130 | return Qnil; |
3131 | } | |
3132 | ||
5500c422 GM |
3133 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3134 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3135 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3136 | margins, fringes, and scroll-bar settings of the window are not | |
3137 | reset from the buffer's local settings. */ | |
7ab12479 | 3138 | |
5500c422 | 3139 | void |
748fa866 DA |
3140 | set_window_buffer (Lisp_Object window, Lisp_Object buffer, |
3141 | bool run_hooks_p, bool keep_margins_p) | |
5500c422 GM |
3142 | { |
3143 | struct window *w = XWINDOW (window); | |
3144 | struct buffer *b = XBUFFER (buffer); | |
d311d28c | 3145 | ptrdiff_t count = SPECPDL_INDEX (); |
e74aeda8 | 3146 | int samebuf = EQ (buffer, w->contents); |
7ab12479 | 3147 | |
e8c17b81 | 3148 | wset_buffer (w, buffer); |
86e48436 RS |
3149 | |
3150 | if (EQ (window, selected_window)) | |
39eb03f1 | 3151 | bset_last_selected_window (b, window); |
beb4e312 | 3152 | |
c49a0495 KS |
3153 | /* Let redisplay errors through. */ |
3154 | b->display_error_modiff = 0; | |
3155 | ||
beb4e312 | 3156 | /* Update time stamps of buffer display. */ |
4b4deea2 | 3157 | if (INTEGERP (BVAR (b, display_count))) |
39eb03f1 PE |
3158 | bset_display_count (b, make_number (XINT (BVAR (b, display_count)) + 1)); |
3159 | bset_display_time (b, Fcurrent_time ()); | |
86e48436 | 3160 | |
02455cb6 DA |
3161 | w->window_end_pos = 0; |
3162 | w->window_end_vpos = 0; | |
c80016b3 | 3163 | w->last_cursor_vpos = 0; |
9d93ce29 | 3164 | |
c3b232e4 | 3165 | if (!(keep_margins_p && samebuf)) |
23fe745a | 3166 | { /* If we're not actually changing the buffer, don't reset hscroll and |
c3b232e4 SM |
3167 | vscroll. This case happens for example when called from |
3168 | change_frame_size_1, where we use a dummy call to | |
3169 | Fset_window_buffer on the frame's selected window (and no other) | |
3170 | just in order to run window-configuration-change-hook. | |
3171 | Resetting hscroll and vscroll here is problematic for things like | |
3172 | image-mode and doc-view-mode since it resets the image's position | |
3173 | whenever we resize the frame. */ | |
80b00b08 | 3174 | w->hscroll = w->min_hscroll = 0; |
c3b232e4 | 3175 | w->vscroll = 0; |
d3d50620 DA |
3176 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
3177 | set_marker_restricted (w->start, | |
c3b232e4 SM |
3178 | make_number (b->last_window_start), |
3179 | buffer); | |
c98ff5dd DA |
3180 | w->start_at_line_beg = 0; |
3181 | w->force_start = 0; | |
c3b232e4 SM |
3182 | } |
3183 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
3184 | I doubt it's worth the trouble. */ | |
7ab12479 | 3185 | windows_or_buffers_changed++; |
5b03d3c0 | 3186 | |
da39107c | 3187 | /* We must select BUFFER for running the window-scroll-functions. */ |
5b03d3c0 RS |
3188 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3189 | because that might itself be a local variable. */ | |
da39107c | 3190 | if (window_initialized) |
5b03d3c0 | 3191 | { |
66322887 | 3192 | record_unwind_current_buffer (); |
5b03d3c0 RS |
3193 | Fset_buffer (buffer); |
3194 | } | |
3195 | ||
d3d50620 | 3196 | XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type); |
a1562258 | 3197 | |
949cf20f KS |
3198 | if (!keep_margins_p) |
3199 | { | |
3200 | /* Set left and right marginal area width etc. from buffer. */ | |
25554267 DA |
3201 | set_window_fringes (w, BVAR (b, left_fringe_width), |
3202 | BVAR (b, right_fringe_width), | |
3203 | BVAR (b, fringes_outside_margins)); | |
3204 | set_window_scroll_bars (w, BVAR (b, scroll_bar_width), | |
3205 | BVAR (b, vertical_scroll_bar_type), Qnil); | |
3206 | set_window_margins (w, BVAR (b, left_margin_cols), | |
3207 | BVAR (b, right_margin_cols)); | |
3208 | apply_window_adjustment (w); | |
949cf20f | 3209 | } |
7ab12479 | 3210 | |
5500c422 GM |
3211 | if (run_hooks_p) |
3212 | { | |
3213 | if (! NILP (Vwindow_scroll_functions)) | |
3214 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
d3d50620 | 3215 | Fmarker_position (w->start)); |
ef264c42 | 3216 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
5500c422 | 3217 | } |
543f5fb1 | 3218 | |
5b03d3c0 | 3219 | unbind_to (count, Qnil); |
5500c422 | 3220 | } |
5b03d3c0 | 3221 | |
a7ca3326 | 3222 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
d653c8cc | 3223 | doc: /* Make WINDOW display BUFFER-OR-NAME as its contents. |
52162052 | 3224 | WINDOW must be a live window and defaults to the selected one. |
9397e56f MR |
3225 | BUFFER-OR-NAME must be a buffer or the name of an existing buffer. |
3226 | ||
3227 | Optional third argument KEEP-MARGINS non-nil means that WINDOW's current | |
3228 | display margins, fringe widths, and scroll bar settings are preserved; | |
3229 | the default is to reset these from the local settings for BUFFER-OR-NAME | |
3230 | or the frame defaults. Return nil. | |
d653c8cc | 3231 | |
7bfac547 MR |
3232 | This function throws an error when WINDOW is strongly dedicated to its |
3233 | buffer (that is `window-dedicated-p' returns t for WINDOW) and does not | |
3234 | already display BUFFER-OR-NAME. | |
6cb4a892 | 3235 | |
8fef9de1 MR |
3236 | This function runs `window-scroll-functions' before running |
3237 | `window-configuration-change-hook'. */) | |
5842a27b | 3238 | (register Lisp_Object window, Lisp_Object buffer_or_name, Lisp_Object keep_margins) |
5500c422 | 3239 | { |
d653c8cc | 3240 | register Lisp_Object tem, buffer; |
52162052 | 3241 | register struct window *w = decode_live_window (window); |
5500c422 | 3242 | |
bed0c171 | 3243 | XSETWINDOW (window, w); |
d653c8cc | 3244 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 3245 | CHECK_BUFFER (buffer); |
e578f381 | 3246 | if (!BUFFER_LIVE_P (XBUFFER (buffer))) |
5500c422 GM |
3247 | error ("Attempt to display deleted buffer"); |
3248 | ||
e74aeda8 | 3249 | tem = w->contents; |
aac0c6e3 MR |
3250 | if (NILP (tem)) |
3251 | error ("Window is deleted"); | |
822995f8 | 3252 | else |
5500c422 | 3253 | { |
9397e56f MR |
3254 | if (!EQ (tem, buffer)) |
3255 | { | |
d3d50620 | 3256 | if (EQ (w->dedicated, Qt)) |
9397e56f MR |
3257 | /* WINDOW is strongly dedicated to its buffer, signal an |
3258 | error. */ | |
3259 | error ("Window is dedicated to `%s'", SDATA (BVAR (XBUFFER (tem), name))); | |
3260 | else | |
3261 | /* WINDOW is weakly dedicated to its buffer, reset | |
e4769531 | 3262 | dedication. */ |
e8c17b81 | 3263 | wset_dedicated (w, Qnil); |
9397e56f MR |
3264 | |
3265 | call1 (Qrecord_window_buffer, window); | |
3266 | } | |
5500c422 GM |
3267 | |
3268 | unshow_buffer (w); | |
3269 | } | |
3270 | ||
949cf20f | 3271 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 | 3272 | |
9397e56f | 3273 | return Qnil; |
c6932ecd | 3274 | } |
b7354ddf | 3275 | \f |
7e5cf297 | 3276 | static Lisp_Object |
971de7fb | 3277 | display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, Lisp_Object override_frame) |
d07f802a | 3278 | { |
87478b52 | 3279 | return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); |
d07f802a RS |
3280 | } |
3281 | ||
6b61353c KH |
3282 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, |
3283 | 0, 1, 0, | |
5a1048a5 | 3284 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 3285 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3286 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c | 3287 | displaying that buffer. */) |
5842a27b | 3288 | (Lisp_Object object) |
6b61353c KH |
3289 | { |
3290 | if (NILP (object)) | |
3291 | { | |
3292 | windows_or_buffers_changed++; | |
3293 | update_mode_lines++; | |
3294 | return Qt; | |
3295 | } | |
3296 | ||
3297 | if (WINDOWP (object)) | |
3298 | { | |
3299 | struct window *w = XWINDOW (object); | |
3300 | mark_window_display_accurate (object, 0); | |
c98ff5dd | 3301 | w->update_mode_line = 1; |
e74aeda8 DA |
3302 | if (BUFFERP (w->contents)) |
3303 | XBUFFER (w->contents)->prevent_redisplay_optimizations_p = 1; | |
6b61353c KH |
3304 | ++update_mode_lines; |
3305 | return Qt; | |
3306 | } | |
0cc1039f | 3307 | |
6b61353c KH |
3308 | if (STRINGP (object)) |
3309 | object = Fget_buffer (object); | |
c6afe371 DA |
3310 | if (BUFFERP (object) && BUFFER_LIVE_P (XBUFFER (object)) |
3311 | && buffer_window_count (XBUFFER (object))) | |
6b61353c | 3312 | { |
c6afe371 DA |
3313 | /* If buffer is live and shown in at least one window, find |
3314 | all windows showing this buffer and force update of them. */ | |
6b61353c KH |
3315 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); |
3316 | return NILP (object) ? Qnil : Qt; | |
3317 | } | |
3318 | ||
3319 | /* If nothing suitable was found, just return. | |
3320 | We could signal an error, but this feature will typically be used | |
3321 | asynchronously in timers or process sentinels, so we don't. */ | |
3322 | return Qnil; | |
3323 | } | |
3324 | ||
1f76f6f5 | 3325 | /* Obsolete since 24.3. */ |
7ab12479 | 3326 | void |
971de7fb | 3327 | temp_output_buffer_show (register Lisp_Object buf) |
7ab12479 JB |
3328 | { |
3329 | register struct buffer *old = current_buffer; | |
3330 | register Lisp_Object window; | |
3331 | register struct window *w; | |
3332 | ||
39eb03f1 | 3333 | bset_directory (XBUFFER (buf), BVAR (current_buffer, directory)); |
bccd3dd1 | 3334 | |
7ab12479 | 3335 | Fset_buffer (buf); |
c6367666 | 3336 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3337 | BEGV = BEG; |
3338 | ZV = Z; | |
3339 | SET_PT (BEG); | |
7ab12479 JB |
3340 | set_buffer_internal (old); |
3341 | ||
e67a1dea | 3342 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 | 3343 | call1 (Vtemp_buffer_show_function, buf); |
0a357e98 | 3344 | else if (WINDOW_LIVE_P (window = display_buffer (buf, Qnil, Qnil))) |
7ab12479 | 3345 | { |
d3d50620 | 3346 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3347 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3348 | Vminibuf_scroll_window = window; |
3349 | w = XWINDOW (window); | |
80b00b08 DA |
3350 | w->hscroll = 0; |
3351 | w->min_hscroll = 0; | |
d3d50620 DA |
3352 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3353 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3354 | |
beb4e312 | 3355 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3356 | and its buffer current. */ |
dee091a3 | 3357 | { |
d311d28c | 3358 | ptrdiff_t count = SPECPDL_INDEX (); |
dee091a3 JD |
3359 | Lisp_Object prev_window, prev_buffer; |
3360 | prev_window = selected_window; | |
3361 | XSETBUFFER (prev_buffer, old); | |
3362 | ||
3363 | /* Select the window that was chosen, for running the hook. | |
3364 | Note: Both Fselect_window and select_window_norecord may | |
3365 | set-buffer to the buffer displayed in the window, | |
3366 | so we need to save the current buffer. --stef */ | |
27e498e6 | 3367 | record_unwind_protect (restore_buffer, prev_buffer); |
dee091a3 JD |
3368 | record_unwind_protect (select_window_norecord, prev_window); |
3369 | Fselect_window (window, Qt); | |
e74aeda8 | 3370 | Fset_buffer (w->contents); |
dee091a3 JD |
3371 | Frun_hooks (1, &Qtemp_buffer_show_hook); |
3372 | unbind_to (count, Qnil); | |
3373 | } | |
2cccc823 | 3374 | } |
7ab12479 JB |
3375 | } |
3376 | \f | |
1a13852e MR |
3377 | /* Make new window, have it replace WINDOW in window-tree, and make |
3378 | WINDOW its only vertical child (HORFLAG 1 means make WINDOW its only | |
3379 | horizontal child). */ | |
3380 | static void | |
748fa866 | 3381 | make_parent_window (Lisp_Object window, bool horflag) |
1a13852e MR |
3382 | { |
3383 | Lisp_Object parent; | |
3384 | register struct window *o, *p; | |
1a13852e MR |
3385 | |
3386 | o = XWINDOW (window); | |
3387 | p = allocate_window (); | |
aa754e6a | 3388 | memcpy ((char *) p + sizeof (struct vectorlike_header), |
62efea5e | 3389 | (char *) o + sizeof (struct vectorlike_header), |
663e2b3f | 3390 | word_size * VECSIZE (struct window)); |
e74aeda8 | 3391 | /* P's buffer slot may change from nil to a buffer... */ |
98a07056 | 3392 | adjust_window_count (p, 1); |
1a13852e MR |
3393 | XSETWINDOW (parent, p); |
3394 | ||
1a13852e MR |
3395 | replace_window (window, parent, 1); |
3396 | ||
e8c17b81 PE |
3397 | wset_next (o, Qnil); |
3398 | wset_prev (o, Qnil); | |
3399 | wset_parent (o, parent); | |
e74aeda8 | 3400 | /* ...but now P becomes an internal window. */ |
e8c17b81 PE |
3401 | wset_start (p, Qnil); |
3402 | wset_pointm (p, Qnil); | |
3403 | wset_buffer (p, Qnil); | |
e74aeda8 | 3404 | wset_combination (p, horflag, window); |
e8c17b81 PE |
3405 | wset_combination_limit (p, Qnil); |
3406 | wset_window_parameters (p, Qnil); | |
1a13852e MR |
3407 | } |
3408 | ||
496e208e MR |
3409 | /* Make new window from scratch. */ |
3410 | Lisp_Object | |
3411 | make_window (void) | |
3412 | { | |
3413 | Lisp_Object window; | |
3414 | register struct window *w; | |
3415 | ||
3416 | w = allocate_window (); | |
62efea5e DA |
3417 | /* Initialize Lisp data. Note that allocate_window initializes all |
3418 | Lisp data to nil, so do it only for slots which should not be nil. */ | |
e8c17b81 PE |
3419 | wset_normal_lines (w, make_float (1.0)); |
3420 | wset_normal_cols (w, make_float (1.0)); | |
3421 | wset_new_total (w, make_number (0)); | |
3422 | wset_new_normal (w, make_number (0)); | |
3423 | wset_start (w, Fmake_marker ()); | |
3424 | wset_pointm (w, Fmake_marker ()); | |
3425 | wset_vertical_scroll_bar_type (w, Qt); | |
e99f70c8 SM |
3426 | /* These Lisp fields are marked specially so they're not set to nil by |
3427 | allocate_window. */ | |
3428 | wset_prev_buffers (w, Qnil); | |
3429 | wset_next_buffers (w, Qnil); | |
62efea5e DA |
3430 | |
3431 | /* Initialize non-Lisp data. Note that allocate_window zeroes out all | |
3432 | non-Lisp data, so do it only for slots which should not be zero. */ | |
496e208e | 3433 | w->nrows_scale_factor = w->ncols_scale_factor = 1; |
9e37ee3b | 3434 | w->left_fringe_width = w->right_fringe_width = -1; |
496e208e MR |
3435 | w->phys_cursor_type = -1; |
3436 | w->phys_cursor_width = -1; | |
38a2c910 | 3437 | w->scroll_bar_width = -1; |
422ff52b | 3438 | w->column_number_displayed = -1; |
62efea5e | 3439 | |
496e208e MR |
3440 | /* Reset window_list. */ |
3441 | Vwindow_list = Qnil; | |
3442 | /* Return window. */ | |
3443 | XSETWINDOW (window, w); | |
3444 | return window; | |
3445 | } | |
3446 | \f | |
3447 | DEFUN ("set-window-new-total", Fset_window_new_total, Sset_window_new_total, 2, 3, 0, | |
3448 | doc: /* Set new total size of WINDOW to SIZE. | |
52162052 | 3449 | WINDOW must be a valid window and defaults to the selected one. |
496e208e MR |
3450 | Return SIZE. |
3451 | ||
3452 | Optional argument ADD non-nil means add SIZE to the new total size of | |
3453 | WINDOW and return the sum. | |
3454 | ||
be7f5545 | 3455 | Note: This function does not operate on any child windows of WINDOW. */) |
496e208e MR |
3456 | (Lisp_Object window, Lisp_Object size, Lisp_Object add) |
3457 | { | |
52162052 | 3458 | struct window *w = decode_valid_window (window); |
496e208e MR |
3459 | |
3460 | CHECK_NUMBER (size); | |
3461 | if (NILP (add)) | |
e8c17b81 | 3462 | wset_new_total (w, size); |
496e208e | 3463 | else |
e8c17b81 | 3464 | wset_new_total (w, make_number (XINT (w->new_total) + XINT (size))); |
496e208e | 3465 | |
d3d50620 | 3466 | return w->new_total; |
496e208e MR |
3467 | } |
3468 | ||
3469 | DEFUN ("set-window-new-normal", Fset_window_new_normal, Sset_window_new_normal, 1, 2, 0, | |
3470 | doc: /* Set new normal size of WINDOW to SIZE. | |
52162052 | 3471 | WINDOW must be a valid window and defaults to the selected one. |
496e208e MR |
3472 | Return SIZE. |
3473 | ||
be7f5545 | 3474 | Note: This function does not operate on any child windows of WINDOW. */) |
496e208e MR |
3475 | (Lisp_Object window, Lisp_Object size) |
3476 | { | |
e8c17b81 PE |
3477 | wset_new_normal (decode_valid_window (window), size); |
3478 | return size; | |
7ab12479 JB |
3479 | } |
3480 | ||
1a13852e MR |
3481 | /* Return 1 if setting w->total_lines (w->total_cols if HORFLAG is |
3482 | non-zero) to w->new_total would result in correct heights (widths) | |
be7f5545 | 3483 | for window W and recursively all child windows of W. |
1a13852e MR |
3484 | |
3485 | Note: This function does not check any of `window-fixed-size-p', | |
3486 | `window-min-height' or `window-min-width'. It does check that window | |
3487 | sizes do not drop below one line (two columns). */ | |
4b66faf3 | 3488 | static int |
748fa866 | 3489 | window_resize_check (struct window *w, bool horflag) |
1a13852e MR |
3490 | { |
3491 | struct window *c; | |
3492 | ||
e74aeda8 | 3493 | if (WINDOW_VERTICAL_COMBINATION_P (w)) |
1a13852e MR |
3494 | /* W is a vertical combination. */ |
3495 | { | |
e74aeda8 | 3496 | c = XWINDOW (w->contents); |
1a13852e | 3497 | if (horflag) |
be7f5545 | 3498 | /* All child windows of W must have the same width as W. */ |
1a13852e MR |
3499 | { |
3500 | while (c) | |
3501 | { | |
d3d50620 | 3502 | if ((XINT (c->new_total) != XINT (w->new_total)) |
d615d6d2 | 3503 | || !window_resize_check (c, horflag)) |
1a13852e | 3504 | return 0; |
d3d50620 | 3505 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3506 | } |
3507 | return 1; | |
3508 | } | |
3509 | else | |
be7f5545 MR |
3510 | /* The sum of the heights of the child windows of W must equal |
3511 | W's height. */ | |
1a13852e MR |
3512 | { |
3513 | int sum_of_sizes = 0; | |
3514 | while (c) | |
3515 | { | |
d615d6d2 | 3516 | if (!window_resize_check (c, horflag)) |
1a13852e | 3517 | return 0; |
d3d50620 DA |
3518 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); |
3519 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e | 3520 | } |
d3d50620 | 3521 | return (sum_of_sizes == XINT (w->new_total)); |
1a13852e MR |
3522 | } |
3523 | } | |
e74aeda8 | 3524 | else if (WINDOW_HORIZONTAL_COMBINATION_P (w)) |
1a13852e MR |
3525 | /* W is a horizontal combination. */ |
3526 | { | |
e74aeda8 | 3527 | c = XWINDOW (w->contents); |
1a13852e | 3528 | if (horflag) |
be7f5545 | 3529 | /* The sum of the widths of the child windows of W must equal W's |
1a13852e MR |
3530 | width. */ |
3531 | { | |
3532 | int sum_of_sizes = 0; | |
3533 | while (c) | |
3534 | { | |
d615d6d2 | 3535 | if (!window_resize_check (c, horflag)) |
1a13852e | 3536 | return 0; |
d3d50620 DA |
3537 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); |
3538 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e | 3539 | } |
d3d50620 | 3540 | return (sum_of_sizes == XINT (w->new_total)); |
1a13852e MR |
3541 | } |
3542 | else | |
be7f5545 | 3543 | /* All child windows of W must have the same height as W. */ |
1a13852e MR |
3544 | { |
3545 | while (c) | |
3546 | { | |
d3d50620 | 3547 | if ((XINT (c->new_total) != XINT (w->new_total)) |
d615d6d2 | 3548 | || !window_resize_check (c, horflag)) |
1a13852e | 3549 | return 0; |
d3d50620 | 3550 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3551 | } |
3552 | return 1; | |
3553 | } | |
3554 | } | |
3555 | else | |
3556 | /* A leaf window. Make sure it's not too small. The following | |
3557 | hardcodes the values of `window-safe-min-width' (2) and | |
3558 | `window-safe-min-height' (1) which are defined in window.el. */ | |
d3d50620 | 3559 | return XINT (w->new_total) >= (horflag ? 2 : 1); |
1a13852e MR |
3560 | } |
3561 | ||
3562 | /* Set w->total_lines (w->total_cols if HORIZONTAL is non-zero) to | |
be7f5545 MR |
3563 | w->new_total for window W and recursively all child windows of W. |
3564 | Also calculate and assign the new vertical (horizontal) start | |
3565 | positions of each of these windows. | |
1a13852e MR |
3566 | |
3567 | This function does not perform any error checks. Make sure you have | |
d615d6d2 | 3568 | run window_resize_check on W before applying this function. */ |
440a42e3 | 3569 | static void |
748fa866 | 3570 | window_resize_apply (struct window *w, bool horflag) |
1a13852e | 3571 | { |
46a4ce9e | 3572 | struct window *c; |
1a13852e MR |
3573 | int pos; |
3574 | ||
3575 | /* Note: Assigning new_normal requires that the new total size of the | |
3576 | parent window has been set *before*. */ | |
3577 | if (horflag) | |
3578 | { | |
5f24fa51 | 3579 | w->total_cols = XFASTINT (w->new_total); |
d3d50620 | 3580 | if (NUMBERP (w->new_normal)) |
e8c17b81 | 3581 | wset_normal_cols (w, w->new_normal); |
1a13852e | 3582 | |
5f24fa51 | 3583 | pos = w->left_col; |
1a13852e MR |
3584 | } |
3585 | else | |
3586 | { | |
5f24fa51 | 3587 | w->total_lines = XFASTINT (w->new_total); |
d3d50620 | 3588 | if (NUMBERP (w->new_normal)) |
e8c17b81 | 3589 | wset_normal_lines (w, w->new_normal); |
1a13852e | 3590 | |
5f24fa51 | 3591 | pos = w->top_line; |
1a13852e MR |
3592 | } |
3593 | ||
e74aeda8 | 3594 | if (WINDOW_VERTICAL_COMBINATION_P (w)) |
1a13852e MR |
3595 | /* W is a vertical combination. */ |
3596 | { | |
e74aeda8 | 3597 | c = XWINDOW (w->contents); |
1a13852e MR |
3598 | while (c) |
3599 | { | |
3600 | if (horflag) | |
5f24fa51 | 3601 | c->left_col = pos; |
1a13852e | 3602 | else |
5f24fa51 | 3603 | c->top_line = pos; |
d615d6d2 | 3604 | window_resize_apply (c, horflag); |
1a13852e | 3605 | if (!horflag) |
5f24fa51 | 3606 | pos = pos + c->total_lines; |
d3d50620 | 3607 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3608 | } |
3609 | } | |
e74aeda8 | 3610 | else if (WINDOW_HORIZONTAL_COMBINATION_P (w)) |
1a13852e MR |
3611 | /* W is a horizontal combination. */ |
3612 | { | |
e74aeda8 | 3613 | c = XWINDOW (w->contents); |
1a13852e MR |
3614 | while (c) |
3615 | { | |
3616 | if (horflag) | |
5f24fa51 | 3617 | c->left_col = pos; |
1a13852e | 3618 | else |
5f24fa51 | 3619 | c->top_line = pos; |
d615d6d2 | 3620 | window_resize_apply (c, horflag); |
1a13852e | 3621 | if (horflag) |
5f24fa51 | 3622 | pos = pos + c->total_cols; |
d3d50620 | 3623 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3624 | } |
3625 | } | |
1a13852e MR |
3626 | } |
3627 | ||
3628 | ||
d9f07150 | 3629 | DEFUN ("window-resize-apply", Fwindow_resize_apply, Swindow_resize_apply, 0, 2, 0, |
1a13852e | 3630 | doc: /* Apply requested size values for window-tree of FRAME. |
d9f07150 DA |
3631 | If FRAME is omitted or nil, it defaults to the selected frame. |
3632 | ||
3633 | Optional argument HORIZONTAL omitted or nil means apply requested | |
3634 | height values. HORIZONTAL non-nil means apply requested width values. | |
1a13852e MR |
3635 | |
3636 | This function checks whether the requested values sum up to a valid | |
be7f5545 MR |
3637 | window layout, recursively assigns the new sizes of all child windows |
3638 | and calculates and assigns the new start positions of these windows. | |
1a13852e MR |
3639 | |
3640 | Note: This function does not check any of `window-fixed-size-p', | |
3641 | `window-min-height' or `window-min-width'. All these checks have to | |
3642 | be applied on the Elisp level. */) | |
3643 | (Lisp_Object frame, Lisp_Object horizontal) | |
3644 | { | |
d9f07150 DA |
3645 | struct frame *f = decode_live_frame (frame); |
3646 | struct window *r = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
748fa866 | 3647 | bool horflag = !NILP (horizontal); |
1a13852e | 3648 | |
d615d6d2 | 3649 | if (!window_resize_check (r, horflag) |
5f24fa51 DA |
3650 | || (XINT (r->new_total) |
3651 | != (horflag ? r->total_cols : r->total_lines))) | |
1a13852e MR |
3652 | return Qnil; |
3653 | ||
4d7e6e51 | 3654 | block_input (); |
d615d6d2 | 3655 | window_resize_apply (r, horflag); |
1a13852e MR |
3656 | |
3657 | windows_or_buffers_changed++; | |
3658 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3659 | ||
3660 | adjust_glyphs (f); | |
4d7e6e51 | 3661 | unblock_input (); |
1a13852e MR |
3662 | |
3663 | run_window_configuration_change_hook (f); | |
3664 | ||
3665 | return Qt; | |
3666 | } | |
3667 | ||
3668 | ||
3669 | /* Resize frame F's windows when number of lines of F is set to SIZE. | |
3670 | HORFLAG 1 means resize windows when number of columns of F is set to | |
3671 | SIZE. | |
3672 | ||
3673 | This function can delete all windows but the selected one in order to | |
3674 | satisfy the request. The result will be meaningful if and only if | |
3675 | F's windows have meaningful sizes when you call this. */ | |
3676 | void | |
748fa866 | 3677 | resize_frame_windows (struct frame *f, int size, bool horflag) |
1a13852e | 3678 | { |
e69b0960 | 3679 | Lisp_Object root = f->root_window; |
1a13852e | 3680 | struct window *r = XWINDOW (root); |
e69b0960 | 3681 | Lisp_Object mini = f->minibuffer_window; |
1a13852e MR |
3682 | struct window *m; |
3683 | /* new_size is the new size of the frame's root window. */ | |
3684 | int new_size = (horflag | |
3685 | ? size | |
3686 | : (size | |
3687 | - FRAME_TOP_MARGIN (f) | |
3688 | - ((FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3689 | ? 1 : 0))); | |
3690 | ||
5f24fa51 | 3691 | r->top_line = FRAME_TOP_MARGIN (f); |
e74aeda8 | 3692 | if (WINDOW_LEAF_P (r)) |
1a13852e MR |
3693 | /* For a leaf root window just set the size. */ |
3694 | if (horflag) | |
5f24fa51 | 3695 | r->total_cols = new_size; |
1a13852e | 3696 | else |
5f24fa51 | 3697 | r->total_lines = new_size; |
1a13852e MR |
3698 | else |
3699 | { | |
3700 | /* old_size is the old size of the frame's root window. */ | |
5f24fa51 | 3701 | int old_size = horflag ? r->total_cols : r->total_lines; |
1a13852e MR |
3702 | Lisp_Object delta; |
3703 | ||
3704 | XSETINT (delta, new_size - old_size); | |
3705 | /* Try a "normal" resize first. */ | |
3706 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qnil); | |
3a45383a | 3707 | if (window_resize_check (r, horflag) |
d3d50620 | 3708 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3709 | window_resize_apply (r, horflag); |
1a13852e MR |
3710 | else |
3711 | { | |
3712 | /* Try with "reasonable" minimum sizes next. */ | |
3713 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qt); | |
d615d6d2 | 3714 | if (window_resize_check (r, horflag) |
d3d50620 | 3715 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3716 | window_resize_apply (r, horflag); |
1a13852e MR |
3717 | else |
3718 | { | |
3719 | /* Finally, try with "safe" minimum sizes. */ | |
3720 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qsafe); | |
d615d6d2 | 3721 | if (window_resize_check (r, horflag) |
d3d50620 | 3722 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3723 | window_resize_apply (r, horflag); |
1a13852e MR |
3724 | else |
3725 | { | |
3726 | /* We lost. Delete all windows but the frame's | |
3727 | selected one. */ | |
e69b0960 | 3728 | root = f->selected_window; |
1a13852e MR |
3729 | Fdelete_other_windows_internal (root, Qnil); |
3730 | if (horflag) | |
5f24fa51 | 3731 | XWINDOW (root)->total_cols = new_size; |
1a13852e | 3732 | else |
5f24fa51 | 3733 | XWINDOW (root)->total_lines = new_size; |
1a13852e MR |
3734 | } |
3735 | } | |
3736 | } | |
3737 | } | |
3738 | ||
3739 | if (FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3740 | { | |
3741 | m = XWINDOW (mini); | |
3742 | if (horflag) | |
5f24fa51 | 3743 | m->total_cols = size; |
1a13852e MR |
3744 | else |
3745 | { | |
3746 | /* Are we sure we always want 1 line here? */ | |
5f24fa51 DA |
3747 | m->total_lines = 1; |
3748 | m->top_line = r->top_line + r->total_lines; | |
1a13852e MR |
3749 | } |
3750 | } | |
dca778d5 MR |
3751 | |
3752 | windows_or_buffers_changed++; | |
1a13852e MR |
3753 | } |
3754 | ||
3755 | ||
3756 | DEFUN ("split-window-internal", Fsplit_window_internal, Ssplit_window_internal, 4, 4, 0, | |
3757 | doc: /* Split window OLD. | |
3758 | Second argument TOTAL-SIZE specifies the number of lines or columns of the | |
9397e56f | 3759 | new window. In any case TOTAL-SIZE must be a positive integer. |
1a13852e MR |
3760 | |
3761 | Third argument SIDE nil (or `below') specifies that the new window shall | |
3762 | be located below WINDOW. SIDE `above' means the new window shall be | |
3763 | located above WINDOW. In both cases TOTAL-SIZE specifies the number of | |
3764 | lines of the new window including space reserved for the mode and/or | |
3765 | header line. | |
3766 | ||
3767 | SIDE t (or `right') specifies that the new window shall be located on | |
3768 | the right side of WINDOW. SIDE `left' means the new window shall be | |
3769 | located on the left of WINDOW. In both cases TOTAL-SIZE specifies the | |
3770 | number of columns of the new window including space reserved for fringes | |
3771 | and the scrollbar or a divider column. | |
3772 | ||
3773 | Fourth argument NORMAL-SIZE specifies the normal size of the new window | |
3774 | according to the SIDE argument. | |
3775 | ||
3776 | The new total and normal sizes of all involved windows must have been | |
3777 | set correctly. See the code of `split-window' for how this is done. */) | |
3778 | (Lisp_Object old, Lisp_Object total_size, Lisp_Object side, Lisp_Object normal_size) | |
3779 | { | |
3780 | /* OLD (*o) is the window we have to split. (*p) is either OLD's | |
3781 | parent window or an internal window we have to install as OLD's new | |
3782 | parent. REFERENCE (*r) must denote a live window, or is set to OLD | |
3783 | provided OLD is a leaf window, or to the frame's selected window. | |
3784 | NEW (*n) is the new window created with some parameters taken from | |
3785 | REFERENCE (*r). */ | |
3786 | register Lisp_Object new, frame, reference; | |
3787 | register struct window *o, *p, *n, *r; | |
3788 | struct frame *f; | |
748fa866 | 3789 | bool horflag |
1a13852e MR |
3790 | /* HORFLAG is 1 when we split side-by-side, 0 otherwise. */ |
3791 | = EQ (side, Qt) || EQ (side, Qleft) || EQ (side, Qright); | |
b6f67890 | 3792 | int combination_limit = 0; |
1a13852e MR |
3793 | |
3794 | CHECK_WINDOW (old); | |
3795 | o = XWINDOW (old); | |
3796 | frame = WINDOW_FRAME (o); | |
3797 | f = XFRAME (frame); | |
3798 | ||
3799 | CHECK_NUMBER (total_size); | |
3800 | ||
b6f67890 MR |
3801 | /* Set combination_limit to 1 if we have to make a new parent window. |
3802 | We do that if either `window-combination-limit' is t, or OLD has no | |
3803 | parent, or OLD is ortho-combined. */ | |
3804 | combination_limit = | |
8e17c9ba | 3805 | EQ (Vwindow_combination_limit, Qt) |
d3d50620 | 3806 | || NILP (o->parent) |
e74aeda8 DA |
3807 | || (horflag |
3808 | ? WINDOW_VERTICAL_COMBINATION_P (XWINDOW (o->parent)) | |
3809 | : WINDOW_HORIZONTAL_COMBINATION_P (XWINDOW (o->parent))); | |
1a13852e MR |
3810 | |
3811 | /* We need a live reference window to initialize some parameters. */ | |
3812 | if (WINDOW_LIVE_P (old)) | |
3813 | /* OLD is live, use it as reference window. */ | |
3814 | reference = old; | |
3815 | else | |
3816 | /* Use the frame's selected window as reference window. */ | |
3817 | reference = FRAME_SELECTED_WINDOW (f); | |
3818 | r = XWINDOW (reference); | |
3819 | ||
3820 | /* The following bugs are caught by `split-window'. */ | |
3821 | if (MINI_WINDOW_P (o)) | |
3822 | error ("Attempt to split minibuffer window"); | |
3823 | else if (XINT (total_size) < (horflag ? 2 : 1)) | |
3824 | error ("Size of new window too small (after split)"); | |
a0c2d0ae MR |
3825 | else if (!combination_limit && !NILP (Vwindow_combination_resize)) |
3826 | /* `window-combination-resize' non-nil means try to resize OLD's siblings | |
1a13852e MR |
3827 | proportionally. */ |
3828 | { | |
d3d50620 | 3829 | p = XWINDOW (o->parent); |
1a13852e | 3830 | /* Temporarily pretend we split the parent window. */ |
e8c17b81 | 3831 | wset_new_total |
5f24fa51 | 3832 | (p, make_number ((horflag ? p->total_cols : p->total_lines) |
077288cf | 3833 | - XINT (total_size))); |
d615d6d2 | 3834 | if (!window_resize_check (p, horflag)) |
1a13852e MR |
3835 | error ("Window sizes don't fit"); |
3836 | else | |
3837 | /* Undo the temporary pretension. */ | |
5f24fa51 DA |
3838 | wset_new_total (p, make_number |
3839 | (horflag ? p->total_cols : p->total_lines)); | |
1a13852e MR |
3840 | } |
3841 | else | |
3842 | { | |
d615d6d2 | 3843 | if (!window_resize_check (o, horflag)) |
1a13852e | 3844 | error ("Resizing old window failed"); |
d3d50620 | 3845 | else if (XINT (total_size) + XINT (o->new_total) |
5f24fa51 | 3846 | != (horflag ? o->total_cols : o->total_lines)) |
1a13852e MR |
3847 | error ("Sum of sizes of old and new window don't fit"); |
3848 | } | |
3849 | ||
3850 | /* This is our point of no return. */ | |
b6f67890 | 3851 | if (combination_limit) |
1a13852e MR |
3852 | { |
3853 | /* Save the old value of o->normal_cols/lines. It gets corrupted | |
3854 | by make_parent_window and we need it below for assigning it to | |
3855 | p->new_normal. */ | |
3a45383a | 3856 | Lisp_Object new_normal |
d3d50620 | 3857 | = horflag ? o->normal_cols : o->normal_lines; |
1a13852e MR |
3858 | |
3859 | make_parent_window (old, horflag); | |
d3d50620 | 3860 | p = XWINDOW (o->parent); |
fdaf534a MR |
3861 | if (EQ (Vwindow_combination_limit, Qt)) |
3862 | /* Store t in the new parent's combination_limit slot to avoid | |
3863 | that its children get merged into another window. */ | |
3864 | wset_combination_limit (p, Qt); | |
1a13852e | 3865 | /* These get applied below. */ |
5f24fa51 DA |
3866 | wset_new_total (p, make_number |
3867 | (horflag ? o->total_cols : o->total_lines)); | |
e8c17b81 | 3868 | wset_new_normal (p, new_normal); |
1a13852e MR |
3869 | } |
3870 | else | |
d3d50620 | 3871 | p = XWINDOW (o->parent); |
1a13852e MR |
3872 | |
3873 | windows_or_buffers_changed++; | |
3874 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3875 | new = make_window (); | |
3876 | n = XWINDOW (new); | |
e8c17b81 PE |
3877 | wset_frame (n, frame); |
3878 | wset_parent (n, o->parent); | |
1a13852e MR |
3879 | |
3880 | if (EQ (side, Qabove) || EQ (side, Qleft)) | |
3881 | { | |
e8c17b81 | 3882 | wset_prev (n, o->prev); |
d3d50620 | 3883 | if (NILP (n->prev)) |
e74aeda8 | 3884 | wset_combination (p, horflag, new); |
1a13852e | 3885 | else |
e8c17b81 PE |
3886 | wset_next (XWINDOW (n->prev), new); |
3887 | wset_next (n, old); | |
3888 | wset_prev (o, new); | |
1a13852e MR |
3889 | } |
3890 | else | |
3891 | { | |
e8c17b81 | 3892 | wset_next (n, o->next); |
d3d50620 | 3893 | if (!NILP (n->next)) |
e8c17b81 PE |
3894 | wset_prev (XWINDOW (n->next), new); |
3895 | wset_prev (n, old); | |
3896 | wset_next (o, new); | |
1a13852e MR |
3897 | } |
3898 | ||
9d93ce29 | 3899 | n->window_end_valid = 0; |
c80016b3 | 3900 | n->last_cursor_vpos = 0; |
1a13852e MR |
3901 | |
3902 | /* Get special geometry settings from reference window. */ | |
eeaf9bf3 DA |
3903 | n->left_margin_cols = r->left_margin_cols; |
3904 | n->right_margin_cols = r->right_margin_cols; | |
9e37ee3b DA |
3905 | n->left_fringe_width = r->left_fringe_width; |
3906 | n->right_fringe_width = r->right_fringe_width; | |
1a13852e | 3907 | n->fringes_outside_margins = r->fringes_outside_margins; |
38a2c910 | 3908 | n->scroll_bar_width = r->scroll_bar_width; |
e8c17b81 | 3909 | wset_vertical_scroll_bar_type (n, r->vertical_scroll_bar_type); |
1a13852e | 3910 | |
1a13852e MR |
3911 | /* Directly assign orthogonal coordinates and sizes. */ |
3912 | if (horflag) | |
3913 | { | |
5f24fa51 DA |
3914 | n->top_line = o->top_line; |
3915 | n->total_lines = o->total_lines; | |
1a13852e MR |
3916 | } |
3917 | else | |
3918 | { | |
5f24fa51 DA |
3919 | n->left_col = o->left_col; |
3920 | n->total_cols = o->total_cols; | |
1a13852e MR |
3921 | } |
3922 | ||
d615d6d2 | 3923 | /* Iso-coordinates and sizes are assigned by window_resize_apply, |
1a13852e | 3924 | get them ready here. */ |
e8c17b81 PE |
3925 | wset_new_total (n, total_size); |
3926 | wset_new_normal (n, normal_size); | |
1a13852e | 3927 | |
4d7e6e51 | 3928 | block_input (); |
d615d6d2 | 3929 | window_resize_apply (p, horflag); |
1a13852e MR |
3930 | adjust_glyphs (f); |
3931 | /* Set buffer of NEW to buffer of reference window. Don't run | |
3932 | any hooks. */ | |
e74aeda8 | 3933 | set_window_buffer (new, r->contents, 0, 1); |
4d7e6e51 | 3934 | unblock_input (); |
1a13852e MR |
3935 | |
3936 | /* Maybe we should run the scroll functions in Elisp (which already | |
3937 | runs the configuration change hook). */ | |
3938 | if (! NILP (Vwindow_scroll_functions)) | |
3939 | run_hook_with_args_2 (Qwindow_scroll_functions, new, | |
d3d50620 | 3940 | Fmarker_position (n->start)); |
1a13852e MR |
3941 | /* Return NEW. */ |
3942 | return new; | |
3943 | } | |
3944 | ||
3945 | ||
3946 | DEFUN ("delete-window-internal", Fdelete_window_internal, Sdelete_window_internal, 1, 1, 0, | |
3947 | doc: /* Remove WINDOW from its frame. | |
87e68db4 JB |
3948 | WINDOW defaults to the selected window. Return nil. |
3949 | Signal an error when WINDOW is the only window on its frame. */) | |
1a13852e MR |
3950 | (register Lisp_Object window) |
3951 | { | |
3952 | register Lisp_Object parent, sibling, frame, root; | |
3953 | struct window *w, *p, *s, *r; | |
3954 | struct frame *f; | |
e74aeda8 | 3955 | bool horflag, before_sibling = 0; |
1a13852e MR |
3956 | |
3957 | w = decode_any_window (window); | |
3958 | XSETWINDOW (window, w); | |
e74aeda8 | 3959 | if (NILP (w->contents)) |
1a13852e MR |
3960 | /* It's a no-op to delete an already deleted window. */ |
3961 | return Qnil; | |
3962 | ||
d3d50620 | 3963 | parent = w->parent; |
1a13852e MR |
3964 | if (NILP (parent)) |
3965 | /* Never delete a minibuffer or frame root window. */ | |
3966 | error ("Attempt to delete minibuffer or sole ordinary window"); | |
d3d50620 | 3967 | else if (NILP (w->prev) && NILP (w->next)) |
1a13852e MR |
3968 | /* Rather bow out here, this case should be handled on the Elisp |
3969 | level. */ | |
3970 | error ("Attempt to delete sole window of parent"); | |
3971 | ||
3972 | p = XWINDOW (parent); | |
e74aeda8 | 3973 | horflag = WINDOW_HORIZONTAL_COMBINATION_P (p); |
1a13852e MR |
3974 | |
3975 | frame = WINDOW_FRAME (w); | |
3976 | f = XFRAME (frame); | |
3977 | ||
3978 | root = FRAME_ROOT_WINDOW (f); | |
3979 | r = XWINDOW (root); | |
3980 | ||
3981 | /* Unlink WINDOW from window tree. */ | |
d3d50620 | 3982 | if (NILP (w->prev)) |
1a13852e MR |
3983 | /* Get SIBLING below (on the right of) WINDOW. */ |
3984 | { | |
3985 | /* before_sibling 1 means WINDOW is the first child of its | |
3986 | parent and thus before the sibling. */ | |
3987 | before_sibling = 1; | |
d3d50620 | 3988 | sibling = w->next; |
1a13852e | 3989 | s = XWINDOW (sibling); |
e8c17b81 | 3990 | wset_prev (s, Qnil); |
e74aeda8 | 3991 | wset_combination (p, horflag, sibling); |
1a13852e MR |
3992 | } |
3993 | else | |
3994 | /* Get SIBLING above (on the left of) WINDOW. */ | |
3995 | { | |
d3d50620 | 3996 | sibling = w->prev; |
1a13852e | 3997 | s = XWINDOW (sibling); |
e8c17b81 | 3998 | wset_next (s, w->next); |
d3d50620 | 3999 | if (!NILP (s->next)) |
e8c17b81 | 4000 | wset_prev (XWINDOW (s->next), sibling); |
7ab12479 JB |
4001 | } |
4002 | ||
d615d6d2 | 4003 | if (window_resize_check (r, horflag) |
5f24fa51 DA |
4004 | && (XINT (r->new_total) |
4005 | == (horflag ? r->total_cols : r->total_lines))) | |
562dd5e9 MR |
4006 | /* We can delete WINDOW now. */ |
4007 | { | |
95986d52 | 4008 | |
562dd5e9 | 4009 | /* Block input. */ |
4d7e6e51 | 4010 | block_input (); |
d615d6d2 | 4011 | window_resize_apply (p, horflag); |
0d384044 | 4012 | |
95986d52 CY |
4013 | /* If this window is referred to by the dpyinfo's mouse |
4014 | highlight, invalidate that slot to be safe (Bug#9904). */ | |
4c5501e9 EZ |
4015 | if (!FRAME_INITIAL_P (f)) |
4016 | { | |
4017 | Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f); | |
4018 | ||
4019 | if (EQ (hlinfo->mouse_face_window, window)) | |
4020 | hlinfo->mouse_face_window = Qnil; | |
4021 | } | |
95986d52 | 4022 | |
562dd5e9 MR |
4023 | windows_or_buffers_changed++; |
4024 | Vwindow_list = Qnil; | |
4025 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
0d384044 | 4026 | |
e8c17b81 | 4027 | wset_next (w, Qnil); /* Don't delete w->next too. */ |
562dd5e9 | 4028 | free_window_matrices (w); |
bd99e242 | 4029 | |
e74aeda8 | 4030 | if (WINDOWP (w->contents)) |
0d384044 | 4031 | { |
e74aeda8 DA |
4032 | delete_all_child_windows (w->contents); |
4033 | wset_combination (w, 0, Qnil); | |
0d384044 | 4034 | } |
e74aeda8 | 4035 | else |
bd99e242 | 4036 | { |
562dd5e9 | 4037 | unshow_buffer (w); |
d3d50620 DA |
4038 | unchain_marker (XMARKER (w->pointm)); |
4039 | unchain_marker (XMARKER (w->start)); | |
e8c17b81 | 4040 | wset_buffer (w, Qnil); |
bd99e242 RS |
4041 | } |
4042 | ||
d3d50620 | 4043 | if (NILP (s->prev) && NILP (s->next)) |
562dd5e9 MR |
4044 | /* A matrjoshka where SIBLING has become the only child of |
4045 | PARENT. */ | |
c32de52a | 4046 | { |
562dd5e9 MR |
4047 | /* Put SIBLING into PARENT's place. */ |
4048 | replace_window (parent, sibling, 0); | |
4049 | /* Have SIBLING inherit the following three slot values from | |
b6f67890 | 4050 | PARENT (the combination_limit slot is not inherited). */ |
e8c17b81 PE |
4051 | wset_normal_cols (s, p->normal_cols); |
4052 | wset_normal_lines (s, p->normal_lines); | |
562dd5e9 | 4053 | /* Mark PARENT as deleted. */ |
e74aeda8 | 4054 | wset_combination (p, 0, Qnil); |
562dd5e9 MR |
4055 | /* Try to merge SIBLING into its new parent. */ |
4056 | recombine_windows (sibling); | |
c32de52a RS |
4057 | } |
4058 | ||
562dd5e9 MR |
4059 | adjust_glyphs (f); |
4060 | ||
4061 | if (!WINDOW_LIVE_P (FRAME_SELECTED_WINDOW (f))) | |
4062 | /* We deleted the frame's selected window. */ | |
0d384044 | 4063 | { |
562dd5e9 MR |
4064 | /* Use the frame's first window as fallback ... */ |
4065 | Lisp_Object new_selected_window = Fframe_first_window (frame); | |
4066 | /* ... but preferably use its most recently used window. */ | |
4067 | Lisp_Object mru_window; | |
0d384044 | 4068 | |
562dd5e9 MR |
4069 | /* `get-mru-window' might fail for some reason so play it safe |
4070 | - promote the first window _without recording it_ first. */ | |
4071 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
4072 | Fselect_window (new_selected_window, Qt); | |
4073 | else | |
f00af5b1 | 4074 | fset_selected_window (f, new_selected_window); |
0d384044 | 4075 | |
4d7e6e51 | 4076 | unblock_input (); |
0d384044 | 4077 | |
562dd5e9 MR |
4078 | /* Now look whether `get-mru-window' gets us something. */ |
4079 | mru_window = call1 (Qget_mru_window, frame); | |
4080 | if (WINDOW_LIVE_P (mru_window) | |
d3d50620 | 4081 | && EQ (XWINDOW (mru_window)->frame, frame)) |
562dd5e9 | 4082 | new_selected_window = mru_window; |
bd99e242 | 4083 | |
562dd5e9 MR |
4084 | /* If all ended up well, we now promote the mru window. */ |
4085 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
4086 | Fselect_window (new_selected_window, Qnil); | |
4087 | else | |
f00af5b1 | 4088 | fset_selected_window (f, new_selected_window); |
0d384044 RS |
4089 | } |
4090 | else | |
4d7e6e51 | 4091 | unblock_input (); |
0d384044 | 4092 | |
562dd5e9 MR |
4093 | /* Must be run by the caller: |
4094 | run_window_configuration_change_hook (f); */ | |
0d384044 | 4095 | } |
562dd5e9 MR |
4096 | else |
4097 | /* We failed: Relink WINDOW into window tree. */ | |
0d384044 | 4098 | { |
562dd5e9 MR |
4099 | if (before_sibling) |
4100 | { | |
e8c17b81 | 4101 | wset_prev (s, window); |
e74aeda8 | 4102 | wset_combination (p, horflag, window); |
562dd5e9 MR |
4103 | } |
4104 | else | |
4105 | { | |
e8c17b81 | 4106 | wset_next (s, window); |
d3d50620 | 4107 | if (!NILP (w->next)) |
e8c17b81 | 4108 | wset_prev (XWINDOW (w->next), window); |
562dd5e9 MR |
4109 | } |
4110 | error ("Deletion failed"); | |
0d384044 RS |
4111 | } |
4112 | ||
0d384044 RS |
4113 | return Qnil; |
4114 | } | |
f984d4fc GM |
4115 | \f |
4116 | /*********************************************************************** | |
4117 | Resizing Mini-Windows | |
4118 | ***********************************************************************/ | |
4119 | ||
562dd5e9 MR |
4120 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we |
4121 | can. */ | |
4122 | void | |
4123 | grow_mini_window (struct window *w, int delta) | |
f984d4fc | 4124 | { |
d3d50620 | 4125 | struct frame *f = XFRAME (w->frame); |
562dd5e9 MR |
4126 | struct window *r; |
4127 | Lisp_Object root, value; | |
f984d4fc | 4128 | |
a54e2c05 DA |
4129 | eassert (MINI_WINDOW_P (w)); |
4130 | eassert (delta >= 0); | |
f984d4fc | 4131 | |
562dd5e9 MR |
4132 | root = FRAME_ROOT_WINDOW (f); |
4133 | r = XWINDOW (root); | |
5386012d MR |
4134 | value = call2 (Qwindow_resize_root_window_vertically, |
4135 | root, make_number (- delta)); | |
d615d6d2 | 4136 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4137 | { |
4d7e6e51 | 4138 | block_input (); |
d615d6d2 | 4139 | window_resize_apply (r, 0); |
f984d4fc | 4140 | |
562dd5e9 | 4141 | /* Grow the mini-window. */ |
5f24fa51 DA |
4142 | w->top_line = r->top_line + r->total_lines; |
4143 | w->total_lines -= XINT (value); | |
628fdc56 | 4144 | /* Enforce full redisplay. FIXME: make it more selective. */ |
dca778d5 | 4145 | windows_or_buffers_changed++; |
562dd5e9 | 4146 | adjust_glyphs (f); |
4d7e6e51 | 4147 | unblock_input (); |
f984d4fc GM |
4148 | } |
4149 | } | |
4150 | ||
4151 | ||
562dd5e9 MR |
4152 | /* Shrink mini-window W. */ |
4153 | void | |
4154 | shrink_mini_window (struct window *w) | |
f984d4fc | 4155 | { |
d3d50620 | 4156 | struct frame *f = XFRAME (w->frame); |
562dd5e9 MR |
4157 | struct window *r; |
4158 | Lisp_Object root, value; | |
4159 | EMACS_INT size; | |
43b4a21f | 4160 | |
a54e2c05 | 4161 | eassert (MINI_WINDOW_P (w)); |
177c0ea7 | 4162 | |
5f24fa51 | 4163 | size = w->total_lines; |
562dd5e9 MR |
4164 | if (size > 1) |
4165 | { | |
4166 | root = FRAME_ROOT_WINDOW (f); | |
4167 | r = XWINDOW (root); | |
5386012d | 4168 | value = call2 (Qwindow_resize_root_window_vertically, |
562dd5e9 | 4169 | root, make_number (size - 1)); |
d615d6d2 | 4170 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4171 | { |
4d7e6e51 | 4172 | block_input (); |
d615d6d2 | 4173 | window_resize_apply (r, 0); |
43b4a21f | 4174 | |
562dd5e9 | 4175 | /* Shrink the mini-window. */ |
5f24fa51 DA |
4176 | w->top_line = r->top_line + r->total_lines; |
4177 | w->total_lines = 1; | |
628fdc56 | 4178 | /* Enforce full redisplay. FIXME: make it more selective. */ |
dca778d5 | 4179 | windows_or_buffers_changed++; |
562dd5e9 | 4180 | adjust_glyphs (f); |
4d7e6e51 | 4181 | unblock_input (); |
f984d4fc | 4182 | } |
562dd5e9 MR |
4183 | /* If the above failed for whatever strange reason we must make a |
4184 | one window frame here. The same routine will be needed when | |
4185 | shrinking the frame (and probably when making the initial | |
4186 | *scratch* window). For the moment leave things as they are. */ | |
f984d4fc GM |
4187 | } |
4188 | } | |
4189 | ||
562dd5e9 MR |
4190 | DEFUN ("resize-mini-window-internal", Fresize_mini_window_internal, Sresize_mini_window_internal, 1, 1, 0, |
4191 | doc: /* Resize minibuffer window WINDOW. */) | |
4192 | (Lisp_Object window) | |
f984d4fc | 4193 | { |
562dd5e9 MR |
4194 | struct window *w = XWINDOW (window); |
4195 | struct window *r; | |
4196 | struct frame *f; | |
4197 | int height; | |
177c0ea7 | 4198 | |
562dd5e9 | 4199 | CHECK_WINDOW (window); |
d3d50620 | 4200 | f = XFRAME (w->frame); |
177c0ea7 | 4201 | |
d3d50620 | 4202 | if (!EQ (FRAME_MINIBUF_WINDOW (XFRAME (w->frame)), window)) |
562dd5e9 MR |
4203 | error ("Not a valid minibuffer window"); |
4204 | else if (FRAME_MINIBUF_ONLY_P (f)) | |
4205 | error ("Cannot resize a minibuffer-only frame"); | |
177c0ea7 | 4206 | |
562dd5e9 | 4207 | r = XWINDOW (FRAME_ROOT_WINDOW (f)); |
5f24fa51 | 4208 | height = r->total_lines + w->total_lines; |
d615d6d2 | 4209 | if (window_resize_check (r, 0) |
d3d50620 DA |
4210 | && XINT (w->new_total) > 0 |
4211 | && height == XINT (r->new_total) + XINT (w->new_total)) | |
f984d4fc | 4212 | { |
4d7e6e51 | 4213 | block_input (); |
d615d6d2 | 4214 | window_resize_apply (r, 0); |
f984d4fc | 4215 | |
5f24fa51 DA |
4216 | w->total_lines = XFASTINT (w->new_total); |
4217 | w->top_line = r->top_line + r->total_lines; | |
177c0ea7 | 4218 | |
562dd5e9 MR |
4219 | windows_or_buffers_changed++; |
4220 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
f984d4fc | 4221 | adjust_glyphs (f); |
4d7e6e51 | 4222 | unblock_input (); |
f984d4fc | 4223 | |
562dd5e9 MR |
4224 | run_window_configuration_change_hook (f); |
4225 | return Qt; | |
86c8e823 | 4226 | } |
562dd5e9 | 4227 | else error ("Failed to resize minibuffer window"); |
f984d4fc | 4228 | } |
562dd5e9 | 4229 | \f |
5500c422 GM |
4230 | /* Mark window cursors off for all windows in the window tree rooted |
4231 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4232 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4233 | the frame are cleared. */ | |
4234 | ||
4235 | void | |
971de7fb | 4236 | mark_window_cursors_off (struct window *w) |
5500c422 GM |
4237 | { |
4238 | while (w) | |
4239 | { | |
e74aeda8 DA |
4240 | if (WINDOWP (w->contents)) |
4241 | mark_window_cursors_off (XWINDOW (w->contents)); | |
5500c422 GM |
4242 | else |
4243 | w->phys_cursor_on_p = 0; | |
4244 | ||
d3d50620 | 4245 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
5500c422 GM |
4246 | } |
4247 | } | |
4248 | ||
4249 | ||
e9c195b1 | 4250 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4251 | |
4252 | int | |
971de7fb | 4253 | window_internal_height (struct window *w) |
7ab12479 | 4254 | { |
5f24fa51 | 4255 | int ht = w->total_lines; |
7ab12479 | 4256 | |
e9c195b1 GM |
4257 | if (!MINI_WINDOW_P (w)) |
4258 | { | |
d3d50620 | 4259 | if (!NILP (w->parent) |
e74aeda8 | 4260 | || WINDOWP (w->contents) |
d3d50620 DA |
4261 | || !NILP (w->next) |
4262 | || !NILP (w->prev) | |
e9c195b1 GM |
4263 | || WINDOW_WANTS_MODELINE_P (w)) |
4264 | --ht; | |
7ab12479 | 4265 | |
e9c195b1 GM |
4266 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4267 | --ht; | |
4268 | } | |
7ab12479 JB |
4269 | |
4270 | return ht; | |
4271 | } | |
5500c422 GM |
4272 | \f |
4273 | /************************************************************************ | |
4274 | Window Scrolling | |
4275 | ***********************************************************************/ | |
535e0b8e | 4276 | |
5500c422 | 4277 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4278 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4279 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4280 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4281 | means don't signal an error if we try to move over BEGV or ZV, | |
4282 | respectively. */ | |
7ab12479 | 4283 | |
101d1605 | 4284 | static void |
56b5d5b1 | 4285 | window_scroll (Lisp_Object window, EMACS_INT n, bool whole, int noerror) |
5500c422 | 4286 | { |
cba59f77 | 4287 | immediate_quit = 1; |
d311d28c | 4288 | n = clip_to_bounds (INT_MIN, n, INT_MAX); |
cba59f77 | 4289 | |
5500c422 GM |
4290 | /* If we must, use the pixel-based version which is much slower than |
4291 | the line-based one but can handle varying line heights. */ | |
d3d50620 | 4292 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) |
5500c422 GM |
4293 | window_scroll_pixel_based (window, n, whole, noerror); |
4294 | else | |
4295 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4296 | |
4297 | immediate_quit = 0; | |
5500c422 GM |
4298 | } |
4299 | ||
4300 | ||
4301 | /* Implementation of window_scroll that works based on pixel line | |
4302 | heights. See the comment of window_scroll for parameter | |
4303 | descriptions. */ | |
4304 | ||
4305 | static void | |
56b5d5b1 | 4306 | window_scroll_pixel_based (Lisp_Object window, int n, bool whole, int noerror) |
5500c422 GM |
4307 | { |
4308 | struct it it; | |
4309 | struct window *w = XWINDOW (window); | |
4310 | struct text_pos start; | |
5500c422 | 4311 | int this_scroll_margin; |
9d14503e | 4312 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5cdb3cf3 | 4313 | int vscrolled = 0; |
5a857365 | 4314 | int x, y, rtop, rbot, rowh, vpos; |
57b3e30b | 4315 | void *itdata = NULL; |
fdda0220 EZ |
4316 | int window_total_lines; |
4317 | int frame_line_height = default_line_pixel_height (w); | |
5500c422 | 4318 | |
d3d50620 | 4319 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
f0ee99a0 EZ |
4320 | /* Scrolling a minibuffer window via scroll bar when the echo area |
4321 | shows long text sometimes resets the minibuffer contents behind | |
4322 | our backs. */ | |
4323 | if (CHARPOS (start) > ZV) | |
4324 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
177c0ea7 | 4325 | |
5500c422 | 4326 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4327 | the screen. Allow PT to be partially visible, otherwise |
4328 | something like (scroll-down 1) with PT in the line before | |
4329 | the partially visible one would recenter. */ | |
5a857365 KS |
4330 | |
4331 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 | 4332 | { |
57b3e30b | 4333 | itdata = bidi_shelve_cache (); |
5500c422 GM |
4334 | /* Move backward half the height of the window. Performance note: |
4335 | vmotion used here is about 10% faster, but would give wrong | |
4336 | results for variable height lines. */ | |
4337 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4338 | it.current_y = it.last_visible_y; | |
f204989e | 4339 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4340 | |
5500c422 GM |
4341 | /* The function move_iterator_vertically may move over more than |
4342 | the specified y-distance. If it->w is small, e.g. a | |
4343 | mini-buffer window, we may end up in front of the window's | |
4344 | display area. This is the case when Start displaying at the | |
4345 | start of the line containing PT in this case. */ | |
4346 | if (it.current_y <= 0) | |
4347 | { | |
4348 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4349 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4350 | it.current_y = 0; |
4351 | } | |
4352 | ||
4353 | start = it.current.pos; | |
35928349 | 4354 | bidi_unshelve_cache (itdata, 0); |
5500c422 | 4355 | } |
e56263e5 KS |
4356 | else if (auto_window_vscroll_p) |
4357 | { | |
5a857365 | 4358 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
4359 | { |
4360 | int px; | |
fdda0220 | 4361 | int dy = frame_line_height; |
e56263e5 | 4362 | if (whole) |
e856c216 KS |
4363 | dy = max ((window_box_height (w) |
4364 | - next_screen_context_lines * dy), | |
4365 | dy); | |
e56263e5 KS |
4366 | dy *= n; |
4367 | ||
5a857365 | 4368 | if (n < 0) |
e56263e5 | 4369 | { |
5a857365 KS |
4370 | /* Only vscroll backwards if already vscrolled forwards. */ |
4371 | if (w->vscroll < 0 && rtop > 0) | |
4372 | { | |
4373 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
4374 | Fset_window_vscroll (window, make_number (px), Qt); | |
4375 | return; | |
4376 | } | |
e56263e5 | 4377 | } |
5a857365 | 4378 | if (n > 0) |
e56263e5 | 4379 | { |
5a857365 KS |
4380 | /* Do vscroll if already vscrolled or only display line. */ |
4381 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
4382 | { | |
4383 | px = max (0, -w->vscroll + min (rbot, dy)); | |
4384 | Fset_window_vscroll (window, make_number (px), Qt); | |
4385 | return; | |
4386 | } | |
4387 | ||
4388 | /* Maybe modify window start instead of scrolling. */ | |
4389 | if (rbot > 0 || w->vscroll < 0) | |
4390 | { | |
d311d28c | 4391 | ptrdiff_t spos; |
5a857365 KS |
4392 | |
4393 | Fset_window_vscroll (window, make_number (0), Qt); | |
4394 | /* If there are other text lines above the current row, | |
4395 | move window start to current row. Else to next row. */ | |
4396 | if (rbot > 0) | |
4397 | spos = XINT (Fline_beginning_position (Qnil)); | |
4398 | else | |
4399 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
d3d50620 | 4400 | set_marker_restricted (w->start, make_number (spos), |
e74aeda8 | 4401 | w->contents); |
c98ff5dd DA |
4402 | w->start_at_line_beg = 1; |
4403 | w->update_mode_line = 1; | |
5a857365 KS |
4404 | /* Set force_start so that redisplay_window will run the |
4405 | window-scroll-functions. */ | |
c98ff5dd | 4406 | w->force_start = 1; |
5a857365 KS |
4407 | return; |
4408 | } | |
e56263e5 KS |
4409 | } |
4410 | } | |
5a857365 | 4411 | /* Cancel previous vscroll. */ |
e56263e5 KS |
4412 | Fset_window_vscroll (window, make_number (0), Qt); |
4413 | } | |
5500c422 | 4414 | |
57b3e30b | 4415 | itdata = bidi_shelve_cache (); |
d0c38d63 | 4416 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
4417 | point in the same window line as it is now, so get that line. */ |
4418 | if (!NILP (Vscroll_preserve_screen_position)) | |
4419 | { | |
c525d842 | 4420 | /* We preserve the goal pixel coordinate across consecutive |
a4b000fb JL |
4421 | calls to scroll-up, scroll-down and other commands that |
4422 | have the `scroll-command' property. This avoids the | |
c525d842 CY |
4423 | possibility of point becoming "stuck" on a tall line when |
4424 | scrolling by one line. */ | |
66fe93d1 | 4425 | if (window_scroll_pixel_based_preserve_y < 0 |
1344aad4 TT |
4426 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4427 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c525d842 CY |
4428 | { |
4429 | start_display (&it, w, start); | |
4430 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 4431 | window_scroll_pixel_based_preserve_y = it.current_y; |
c876b227 | 4432 | window_scroll_pixel_based_preserve_x = it.current_x; |
c525d842 | 4433 | } |
5500c422 GM |
4434 | } |
4435 | else | |
c876b227 SM |
4436 | window_scroll_pixel_based_preserve_y |
4437 | = window_scroll_pixel_based_preserve_x = -1; | |
5500c422 GM |
4438 | |
4439 | /* Move iterator it from start the specified distance forward or | |
4440 | backward. The result is the new window start. */ | |
4441 | start_display (&it, w, start); | |
4442 | if (whole) | |
4443 | { | |
d311d28c | 4444 | ptrdiff_t start_pos = IT_CHARPOS (it); |
fdda0220 | 4445 | int dy = frame_line_height; |
e856c216 KS |
4446 | dy = max ((window_box_height (w) |
4447 | - next_screen_context_lines * dy), | |
4448 | dy) * n; | |
d72340d4 GM |
4449 | |
4450 | /* Note that move_it_vertically always moves the iterator to the | |
4451 | start of a line. So, if the last line doesn't have a newline, | |
4452 | we would end up at the start of the line ending at ZV. */ | |
4453 | if (dy <= 0) | |
e856c216 KS |
4454 | { |
4455 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 4456 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
4457 | looking at an image that is taller that the window height. */ |
4458 | while (start_pos == IT_CHARPOS (it) | |
4459 | && start_pos > BEGV) | |
e4cc2dfc | 4460 | move_it_by_lines (&it, -1); |
e856c216 | 4461 | } |
d72340d4 | 4462 | else if (dy > 0) |
bed83ee4 | 4463 | { |
bed83ee4 KS |
4464 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
4465 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 4466 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
4467 | looking at an image that is taller that the window height. */ |
4468 | while (start_pos == IT_CHARPOS (it) | |
4469 | && start_pos < ZV) | |
e4cc2dfc | 4470 | move_it_by_lines (&it, 1); |
bed83ee4 | 4471 | } |
5500c422 GM |
4472 | } |
4473 | else | |
e4cc2dfc | 4474 | move_it_by_lines (&it, n); |
5500c422 | 4475 | |
96ae58c8 RS |
4476 | /* We failed if we find ZV is already on the screen (scrolling up, |
4477 | means there's nothing past the end), or if we can't start any | |
4478 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 4479 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 4480 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 4481 | { |
5cdb3cf3 MB |
4482 | if (IT_CHARPOS (it) == ZV) |
4483 | { | |
07ce8b53 RS |
4484 | if (it.current_y < it.last_visible_y |
4485 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 4486 | > it.last_visible_y)) |
a74eca50 GM |
4487 | { |
4488 | /* The last line was only partially visible, make it fully | |
4489 | visible. */ | |
4490 | w->vscroll = (it.last_visible_y | |
4491 | - it.current_y + it.max_ascent + it.max_descent); | |
4492 | adjust_glyphs (it.f); | |
4493 | } | |
5cdb3cf3 | 4494 | else |
57b3e30b | 4495 | { |
35928349 | 4496 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
4497 | if (noerror) |
4498 | return; | |
4499 | else if (n < 0) /* could happen with empty buffers */ | |
4500 | xsignal0 (Qbeginning_of_buffer); | |
4501 | else | |
4502 | xsignal0 (Qend_of_buffer); | |
4503 | } | |
5cdb3cf3 | 4504 | } |
5500c422 | 4505 | else |
5cdb3cf3 MB |
4506 | { |
4507 | if (w->vscroll != 0) | |
4508 | /* The first line was only partially visible, make it fully | |
4509 | visible. */ | |
4510 | w->vscroll = 0; | |
5cdb3cf3 | 4511 | else |
57b3e30b | 4512 | { |
35928349 | 4513 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
4514 | if (noerror) |
4515 | return; | |
4516 | else | |
4517 | xsignal0 (Qbeginning_of_buffer); | |
4518 | } | |
5cdb3cf3 MB |
4519 | } |
4520 | ||
4521 | /* If control gets here, then we vscrolled. */ | |
4522 | ||
e74aeda8 | 4523 | XBUFFER (w->contents)->prevent_redisplay_optimizations_p = 1; |
5cdb3cf3 MB |
4524 | |
4525 | /* Don't try to change the window start below. */ | |
4526 | vscrolled = 1; | |
5500c422 GM |
4527 | } |
4528 | ||
5cdb3cf3 MB |
4529 | if (! vscrolled) |
4530 | { | |
d311d28c PE |
4531 | ptrdiff_t pos = IT_CHARPOS (it); |
4532 | ptrdiff_t bytepos; | |
e68def1e AS |
4533 | |
4534 | /* If in the middle of a multi-glyph character move forward to | |
4535 | the next character. */ | |
4536 | if (in_display_vector_p (&it)) | |
4537 | { | |
4538 | ++pos; | |
4539 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
4540 | } | |
4541 | ||
5cdb3cf3 | 4542 | /* Set the window start, and set up the window for redisplay. */ |
e74aeda8 | 4543 | set_marker_restricted_both (w->start, w->contents, IT_CHARPOS (it), |
f74de345 | 4544 | IT_BYTEPOS (it)); |
4c1acb95 | 4545 | bytepos = marker_byte_position (w->start); |
c98ff5dd DA |
4546 | w->start_at_line_beg = (pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n'); |
4547 | w->update_mode_line = 1; | |
5cdb3cf3 MB |
4548 | /* Set force_start so that redisplay_window will run the |
4549 | window-scroll-functions. */ | |
c98ff5dd | 4550 | w->force_start = 1; |
5cdb3cf3 | 4551 | } |
177c0ea7 | 4552 | |
dc297565 RS |
4553 | /* The rest of this function uses current_y in a nonstandard way, |
4554 | not including the height of the header line if any. */ | |
5500c422 | 4555 | it.current_y = it.vpos = 0; |
177c0ea7 | 4556 | |
940f53e5 RS |
4557 | /* Move PT out of scroll margins. |
4558 | This code wants current_y to be zero at the window start position | |
4559 | even if there is a header line. */ | |
fdda0220 EZ |
4560 | window_total_lines |
4561 | = w->total_lines * WINDOW_FRAME_LINE_HEIGHT (w) / frame_line_height; | |
940f53e5 | 4562 | this_scroll_margin = max (0, scroll_margin); |
3a45383a | 4563 | this_scroll_margin |
fdda0220 EZ |
4564 | = min (this_scroll_margin, window_total_lines / 4); |
4565 | this_scroll_margin *= frame_line_height; | |
940f53e5 RS |
4566 | |
4567 | if (n > 0) | |
5500c422 | 4568 | { |
940f53e5 RS |
4569 | /* We moved the window start towards ZV, so PT may be now |
4570 | in the scroll margin at the top. */ | |
4571 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
4572 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
4573 | && (NILP (Vscroll_preserve_screen_position) | |
4574 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4575 | /* We found PT at a legitimate height. Leave it alone. */ |
4576 | ; | |
66fe93d1 | 4577 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4578 | { |
fa3c3426 RS |
4579 | /* If we have a header line, take account of it. |
4580 | This is necessary because we set it.current_y to 0, above. */ | |
c876b227 SM |
4581 | move_it_to (&it, -1, |
4582 | window_scroll_pixel_based_preserve_x, | |
66fe93d1 LT |
4583 | window_scroll_pixel_based_preserve_y |
4584 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c876b227 | 4585 | -1, MOVE_TO_Y | MOVE_TO_X); |
940f53e5 RS |
4586 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4587 | } | |
4588 | else | |
5500c422 | 4589 | { |
5500c422 | 4590 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
4591 | { |
4592 | int prev = it.current_y; | |
e4cc2dfc | 4593 | move_it_by_lines (&it, 1); |
e9b2c961 RS |
4594 | if (prev == it.current_y) |
4595 | break; | |
4596 | } | |
5500c422 GM |
4597 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4598 | } | |
940f53e5 RS |
4599 | } |
4600 | else if (n < 0) | |
4601 | { | |
d311d28c | 4602 | ptrdiff_t charpos, bytepos; |
aed328bf | 4603 | int partial_p; |
940f53e5 | 4604 | |
66fe93d1 LT |
4605 | /* Save our position, for the |
4606 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
4607 | charpos = IT_CHARPOS (it); |
4608 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 4609 | |
940f53e5 RS |
4610 | /* We moved the window start towards BEGV, so PT may be now |
4611 | in the scroll margin at the bottom. */ | |
4612 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
4613 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
4614 | - this_scroll_margin - 1), | |
4615 | -1, | |
940f53e5 RS |
4616 | MOVE_TO_POS | MOVE_TO_Y); |
4617 | ||
aed328bf KS |
4618 | /* Save our position, in case it's correct. */ |
4619 | charpos = IT_CHARPOS (it); | |
4620 | bytepos = IT_BYTEPOS (it); | |
4621 | ||
4622 | /* See if point is on a partially visible line at the end. */ | |
4623 | if (it.what == IT_EOB) | |
4624 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
4625 | else | |
4626 | { | |
e4cc2dfc | 4627 | move_it_by_lines (&it, 1); |
aed328bf KS |
4628 | partial_p = it.current_y > it.last_visible_y; |
4629 | } | |
4630 | ||
bdf4ec93 RS |
4631 | if (charpos == PT && !partial_p |
4632 | && (NILP (Vscroll_preserve_screen_position) | |
4633 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4634 | /* We found PT before we found the display margin, so PT is ok. */ |
4635 | ; | |
66fe93d1 | 4636 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4637 | { |
d3d50620 | 4638 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
940f53e5 | 4639 | start_display (&it, w, start); |
c525d842 CY |
4640 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
4641 | here because we called start_display again and did not | |
4642 | alter it.current_y this time. */ | |
c876b227 SM |
4643 | move_it_to (&it, -1, window_scroll_pixel_based_preserve_x, |
4644 | window_scroll_pixel_based_preserve_y, -1, | |
4645 | MOVE_TO_Y | MOVE_TO_X); | |
940f53e5 RS |
4646 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4647 | } | |
4648 | else | |
4649 | { | |
aed328bf | 4650 | if (partial_p) |
5cdb3cf3 MB |
4651 | /* The last line was only partially visible, so back up two |
4652 | lines to make sure we're on a fully visible line. */ | |
4653 | { | |
e4cc2dfc | 4654 | move_it_by_lines (&it, -2); |
5cdb3cf3 MB |
4655 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4656 | } | |
4657 | else | |
4658 | /* No, the position we saved is OK, so use it. */ | |
4659 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
4660 | } |
4661 | } | |
35928349 | 4662 | bidi_unshelve_cache (itdata, 0); |
5500c422 GM |
4663 | } |
4664 | ||
4665 | ||
4666 | /* Implementation of window_scroll that works based on screen lines. | |
4667 | See the comment of window_scroll for parameter descriptions. */ | |
4668 | ||
4669 | static void | |
56b5d5b1 | 4670 | window_scroll_line_based (Lisp_Object window, int n, bool whole, int noerror) |
7ab12479 JB |
4671 | { |
4672 | register struct window *w = XWINDOW (window); | |
03ab8921 EZ |
4673 | /* Fvertical_motion enters redisplay, which can trigger |
4674 | fontification, which in turn can modify buffer text (e.g., if the | |
4675 | fontification functions replace escape sequences with faces, as | |
4676 | in `grep-mode-font-lock-keywords'). So we use a marker to record | |
4677 | the old point position, to prevent crashes in SET_PT_BOTH. */ | |
4678 | Lisp_Object opoint_marker = Fpoint_marker (); | |
d311d28c | 4679 | register ptrdiff_t pos, pos_byte; |
7ab12479 JB |
4680 | register int ht = window_internal_height (w); |
4681 | register Lisp_Object tem; | |
56b5d5b1 | 4682 | bool lose; |
5500c422 | 4683 | Lisp_Object bolp; |
c54aa166 DA |
4684 | ptrdiff_t startpos = marker_position (w->start); |
4685 | ptrdiff_t startbyte = marker_byte_position (w->start); | |
c876b227 | 4686 | Lisp_Object original_pos = Qnil; |
101d1605 | 4687 | |
d4e7cf01 GM |
4688 | /* If scrolling screen-fulls, compute the number of lines to |
4689 | scroll from the window's height. */ | |
4690 | if (whole) | |
4691 | n *= max (1, ht - next_screen_context_lines); | |
4692 | ||
c876b227 SM |
4693 | if (!NILP (Vscroll_preserve_screen_position)) |
4694 | { | |
4695 | if (window_scroll_preserve_vpos <= 0 | |
1344aad4 TT |
4696 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4697 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c876b227 SM |
4698 | { |
4699 | struct position posit | |
c54aa166 DA |
4700 | = *compute_motion (startpos, startbyte, 0, 0, 0, |
4701 | PT, ht, 0, -1, w->hscroll, 0, w); | |
c876b227 | 4702 | window_scroll_preserve_vpos = posit.vpos; |
80b00b08 | 4703 | window_scroll_preserve_hpos = posit.hpos + w->hscroll; |
c876b227 SM |
4704 | } |
4705 | ||
4706 | original_pos = Fcons (make_number (window_scroll_preserve_hpos), | |
4707 | make_number (window_scroll_preserve_vpos)); | |
4708 | } | |
0a1f771a | 4709 | |
d834a2e9 | 4710 | XSETFASTINT (tem, PT); |
6ffdb539 | 4711 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 4712 | |
265a9e55 | 4713 | if (NILP (tem)) |
7ab12479 | 4714 | { |
cd2be1dd | 4715 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 4716 | startpos = PT; |
c54aa166 | 4717 | startbyte = PT_BYTE; |
7ab12479 JB |
4718 | } |
4719 | ||
c54aa166 | 4720 | SET_PT_BOTH (startpos, startbyte); |
5ce7b543 | 4721 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 4722 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 4723 | pos = PT; |
b73ea88e | 4724 | pos_byte = PT_BYTE; |
7ab12479 | 4725 | bolp = Fbolp (); |
03ab8921 EZ |
4726 | SET_PT_BOTH (marker_position (opoint_marker), |
4727 | marker_byte_position (opoint_marker)); | |
7ab12479 JB |
4728 | |
4729 | if (lose) | |
f8026fd8 JB |
4730 | { |
4731 | if (noerror) | |
4732 | return; | |
4733 | else | |
ba96a5cf | 4734 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 4735 | } |
7ab12479 JB |
4736 | |
4737 | if (pos < ZV) | |
7ab12479 | 4738 | { |
0c7da84e | 4739 | /* Don't use a scroll margin that is negative or too large. */ |
71f02bc5 | 4740 | int this_scroll_margin = |
5f24fa51 | 4741 | max (0, min (scroll_margin, w->total_lines / 4)); |
0c7da84e | 4742 | |
e74aeda8 | 4743 | set_marker_restricted_both (w->start, w->contents, pos, pos_byte); |
c98ff5dd DA |
4744 | w->start_at_line_beg = !NILP (bolp); |
4745 | w->update_mode_line = 1; | |
345d45b2 RS |
4746 | /* Set force_start so that redisplay_window will run |
4747 | the window-scroll-functions. */ | |
c98ff5dd | 4748 | w->force_start = 1; |
0c7da84e | 4749 | |
bdf4ec93 RS |
4750 | if (!NILP (Vscroll_preserve_screen_position) |
4751 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 4752 | { |
b73ea88e | 4753 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4754 | Fvertical_motion (original_pos, window); |
0c7da84e | 4755 | } |
101d1605 RS |
4756 | /* If we scrolled forward, put point enough lines down |
4757 | that it is outside the scroll margin. */ | |
4758 | else if (n > 0) | |
0c7da84e | 4759 | { |
101d1605 RS |
4760 | int top_margin; |
4761 | ||
4762 | if (this_scroll_margin > 0) | |
4763 | { | |
b73ea88e | 4764 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4765 | Fvertical_motion (make_number (this_scroll_margin), window); |
4766 | top_margin = PT; | |
4767 | } | |
4768 | else | |
4769 | top_margin = pos; | |
4770 | ||
03ab8921 EZ |
4771 | if (top_margin <= marker_position (opoint_marker)) |
4772 | SET_PT_BOTH (marker_position (opoint_marker), | |
4773 | marker_byte_position (opoint_marker)); | |
5500c422 | 4774 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 4775 | { |
b73ea88e | 4776 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4777 | Fvertical_motion (original_pos, window); |
101d1605 | 4778 | } |
9317a85d | 4779 | else |
335406fc | 4780 | SET_PT (top_margin); |
0c7da84e | 4781 | } |
101d1605 | 4782 | else if (n < 0) |
7ab12479 | 4783 | { |
101d1605 RS |
4784 | int bottom_margin; |
4785 | ||
0c7da84e RS |
4786 | /* If we scrolled backward, put point near the end of the window |
4787 | but not within the scroll margin. */ | |
b73ea88e | 4788 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 4789 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
4790 | if (XFASTINT (tem) == ht - this_scroll_margin) |
4791 | bottom_margin = PT; | |
4792 | else | |
4793 | bottom_margin = PT + 1; | |
4794 | ||
03ab8921 EZ |
4795 | if (bottom_margin > marker_position (opoint_marker)) |
4796 | SET_PT_BOTH (marker_position (opoint_marker), | |
4797 | marker_byte_position (opoint_marker)); | |
7ab12479 | 4798 | else |
101d1605 | 4799 | { |
5500c422 | 4800 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 4801 | { |
b73ea88e | 4802 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4803 | Fvertical_motion (original_pos, window); |
9317a85d RS |
4804 | } |
4805 | else | |
4806 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 4807 | } |
7ab12479 JB |
4808 | } |
4809 | } | |
4810 | else | |
f8026fd8 JB |
4811 | { |
4812 | if (noerror) | |
4813 | return; | |
4814 | else | |
ba96a5cf | 4815 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 4816 | } |
7ab12479 | 4817 | } |
5500c422 GM |
4818 | |
4819 | ||
4820 | /* Scroll selected_window up or down. If N is nil, scroll a | |
4821 | screen-full which is defined as the height of the window minus | |
4822 | next_screen_context_lines. If N is the symbol `-', scroll. | |
4823 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
4824 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
4825 | |
4826 | static void | |
971de7fb | 4827 | scroll_command (Lisp_Object n, int direction) |
7ab12479 | 4828 | { |
d311d28c | 4829 | ptrdiff_t count = SPECPDL_INDEX (); |
7ab12479 | 4830 | |
a54e2c05 | 4831 | eassert (eabs (direction) == 1); |
5500c422 GM |
4832 | |
4833 | /* If selected window's buffer isn't current, make it current for | |
4834 | the moment. But don't screw up if window_scroll gets an error. */ | |
e74aeda8 | 4835 | if (XBUFFER (XWINDOW (selected_window)->contents) != current_buffer) |
95605e15 JB |
4836 | { |
4837 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
e74aeda8 | 4838 | Fset_buffer (XWINDOW (selected_window)->contents); |
5500c422 GM |
4839 | |
4840 | /* Make redisplay consider other windows than just selected_window. */ | |
4841 | ++windows_or_buffers_changed; | |
95605e15 | 4842 | } |
7ab12479 | 4843 | |
265a9e55 | 4844 | if (NILP (n)) |
d4e7cf01 | 4845 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 4846 | else if (EQ (n, Qminus)) |
d4e7cf01 | 4847 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
4848 | else |
4849 | { | |
4850 | n = Fprefix_numeric_value (n); | |
101d1605 | 4851 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 4852 | } |
95605e15 JB |
4853 | |
4854 | unbind_to (count, Qnil); | |
7ab12479 JB |
4855 | } |
4856 | ||
e0965597 | 4857 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
12bb3111 | 4858 | doc: /* Scroll text of selected window upward ARG lines. |
a0a37a6f | 4859 | If ARG is omitted or nil, scroll upward by a near full screen. |
fdb82f93 PJ |
4860 | A near full screen is `next-screen-context-lines' less than a full screen. |
4861 | Negative ARG means scroll downward. | |
4862 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4863 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4864 | (Lisp_Object arg) |
7ab12479 | 4865 | { |
413430c5 | 4866 | scroll_command (arg, 1); |
7ab12479 JB |
4867 | return Qnil; |
4868 | } | |
4869 | ||
e0965597 | 4870 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
12bb3111 | 4871 | doc: /* Scroll text of selected window down ARG lines. |
a0a37a6f | 4872 | If ARG is omitted or nil, scroll down by a near full screen. |
fdb82f93 PJ |
4873 | A near full screen is `next-screen-context-lines' less than a full screen. |
4874 | Negative ARG means scroll upward. | |
4875 | If ARG is the atom `-', scroll upward by nearly full screen. | |
4876 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4877 | (Lisp_Object arg) |
7ab12479 | 4878 | { |
413430c5 | 4879 | scroll_command (arg, -1); |
7ab12479 JB |
4880 | return Qnil; |
4881 | } | |
ccd0664b RS |
4882 | \f |
4883 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 4884 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 4885 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
4886 | showing that buffer is used. |
4887 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4888 | specifies the window. This takes precedence over | |
4889 | `other-window-scroll-buffer'. */) | |
5842a27b | 4890 | (void) |
7ab12479 | 4891 | { |
ccd0664b | 4892 | Lisp_Object window; |
7ab12479 JB |
4893 | |
4894 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 4895 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
4896 | window = Vminibuf_scroll_window; |
4897 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 4898 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
4899 | { |
4900 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 4901 | if (NILP (window)) |
87478b52 | 4902 | window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
4903 | } |
4904 | else | |
dbc4e1c1 JB |
4905 | { |
4906 | /* Nothing specified; look for a neighboring window on the same | |
4907 | frame. */ | |
4908 | window = Fnext_window (selected_window, Qnil, Qnil); | |
4909 | ||
4910 | if (EQ (window, selected_window)) | |
4911 | /* That didn't get us anywhere; look for a window on another | |
4912 | visible frame. */ | |
4913 | do | |
4914 | window = Fnext_window (window, Qnil, Qt); | |
4915 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
4916 | && ! EQ (window, selected_window)); | |
4917 | } | |
4918 | ||
b7826503 | 4919 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
4920 | |
4921 | if (EQ (window, selected_window)) | |
4922 | error ("There is no other window"); | |
4923 | ||
ccd0664b RS |
4924 | return window; |
4925 | } | |
4926 | ||
4927 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
4928 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
4929 | A near full screen is `next-screen-context-lines' less than a full screen. | |
4930 | The next window is the one below the current one; or the one at the top | |
4931 | if the current one is at the bottom. Negative ARG means scroll downward. | |
4932 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4933 | When calling from a program, supply as argument a number, nil, or `-'. | |
4934 | ||
fdb82f93 | 4935 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
4936 | showing that buffer, popping the buffer up if necessary. |
4937 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4938 | specifies the window to scroll. This takes precedence over | |
4939 | `other-window-scroll-buffer'. */) | |
5842a27b | 4940 | (Lisp_Object arg) |
ccd0664b | 4941 | { |
d4e7cf01 GM |
4942 | Lisp_Object window; |
4943 | struct window *w; | |
d311d28c | 4944 | ptrdiff_t count = SPECPDL_INDEX (); |
ccd0664b RS |
4945 | |
4946 | window = Fother_window_for_scrolling (); | |
7ab12479 | 4947 | w = XWINDOW (window); |
7ab12479 JB |
4948 | |
4949 | /* Don't screw up if window_scroll gets an error. */ | |
4950 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 4951 | ++windows_or_buffers_changed; |
7ab12479 | 4952 | |
e74aeda8 | 4953 | Fset_buffer (w->contents); |
ffcd945e | 4954 | SET_PT_BOTH (marker_position (w->pointm), marker_byte_position (w->pointm)); |
7ab12479 | 4955 | |
413430c5 | 4956 | if (NILP (arg)) |
d4e7cf01 | 4957 | window_scroll (window, 1, 1, 1); |
413430c5 | 4958 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 4959 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
4960 | else |
4961 | { | |
413430c5 | 4962 | if (CONSP (arg)) |
7d7bbefd | 4963 | arg = XCAR (arg); |
b7826503 | 4964 | CHECK_NUMBER (arg); |
101d1605 | 4965 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
4966 | } |
4967 | ||
d3d50620 | 4968 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 4969 | unbind_to (count, Qnil); |
7ab12479 JB |
4970 | |
4971 | return Qnil; | |
4972 | } | |
4973 | \f | |
e0965597 | 4974 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 4975 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
4976 | Default for ARG is window width minus 2. |
4977 | Value is the total amount of leftward horizontal scrolling in | |
4978 | effect after the change. | |
23fe745a | 4979 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 4980 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 4981 | will not scroll a window to a column less than the value returned |
dc297565 | 4982 | by this function. This happens in an interactive call. */) |
5842a27b | 4983 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 4984 | { |
c67fa410 | 4985 | struct window *w = XWINDOW (selected_window); |
aa754e6a PE |
4986 | EMACS_INT requested_arg = (NILP (arg) |
4987 | ? window_body_cols (w) - 2 | |
4988 | : XINT (Fprefix_numeric_value (arg))); | |
24a212eb | 4989 | Lisp_Object result = set_window_hscroll (w, w->hscroll + requested_arg); |
c67fa410 | 4990 | |
dc297565 | 4991 | if (!NILP (set_minimum)) |
c67fa410 GM |
4992 | w->min_hscroll = w->hscroll; |
4993 | ||
4994 | return result; | |
7ab12479 JB |
4995 | } |
4996 | ||
e0965597 | 4997 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 4998 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
4999 | Default for ARG is window width minus 2. |
5000 | Value is the total amount of leftward horizontal scrolling in | |
5001 | effect after the change. | |
23fe745a | 5002 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5003 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5004 | will not scroll a window to a column less than the value returned |
dc297565 | 5005 | by this function. This happens in an interactive call. */) |
5842a27b | 5006 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 5007 | { |
c67fa410 | 5008 | struct window *w = XWINDOW (selected_window); |
aa754e6a PE |
5009 | EMACS_INT requested_arg = (NILP (arg) |
5010 | ? window_body_cols (w) - 2 | |
5011 | : XINT (Fprefix_numeric_value (arg))); | |
24a212eb | 5012 | Lisp_Object result = set_window_hscroll (w, w->hscroll - requested_arg); |
177c0ea7 | 5013 | |
dc297565 | 5014 | if (!NILP (set_minimum)) |
c67fa410 GM |
5015 | w->min_hscroll = w->hscroll; |
5016 | ||
5017 | return result; | |
7ab12479 JB |
5018 | } |
5019 | ||
fa832261 KS |
5020 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5021 | doc: /* Return the window which was selected when entering the minibuffer. | |
12bb3111 | 5022 | Returns nil, if selected window is not a minibuffer window. */) |
5842a27b | 5023 | (void) |
fa832261 KS |
5024 | { |
5025 | if (minibuf_level > 0 | |
5026 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5027 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5028 | return minibuf_selected_window; | |
5029 | ||
5030 | return Qnil; | |
5031 | } | |
5032 | ||
12c8b416 GM |
5033 | /* Value is the number of lines actually displayed in window W, |
5034 | as opposed to its height. */ | |
5035 | ||
5036 | static int | |
971de7fb | 5037 | displayed_window_lines (struct window *w) |
12c8b416 GM |
5038 | { |
5039 | struct it it; | |
5040 | struct text_pos start; | |
4c1acb95 | 5041 | ptrdiff_t charpos = marker_position (w->start); |
12c8b416 GM |
5042 | int height = window_box_height (w); |
5043 | struct buffer *old_buffer; | |
5044 | int bottom_y; | |
57b3e30b | 5045 | void *itdata = NULL; |
12c8b416 | 5046 | |
e74aeda8 | 5047 | if (XBUFFER (w->contents) != current_buffer) |
12c8b416 GM |
5048 | { |
5049 | old_buffer = current_buffer; | |
e74aeda8 | 5050 | set_buffer_internal (XBUFFER (w->contents)); |
12c8b416 GM |
5051 | } |
5052 | else | |
5053 | old_buffer = NULL; | |
5054 | ||
521b203e GM |
5055 | /* In case W->start is out of the accessible range, do something |
5056 | reasonable. This happens in Info mode when Info-scroll-down | |
5057 | calls (recenter -1) while W->start is 1. */ | |
4c1acb95 | 5058 | if (charpos < BEGV) |
521b203e | 5059 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); |
4c1acb95 | 5060 | else if (charpos > ZV) |
521b203e GM |
5061 | SET_TEXT_POS (start, ZV, ZV_BYTE); |
5062 | else | |
d3d50620 | 5063 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
521b203e | 5064 | |
57b3e30b | 5065 | itdata = bidi_shelve_cache (); |
12c8b416 GM |
5066 | start_display (&it, w, start); |
5067 | move_it_vertically (&it, height); | |
c8bc6f65 | 5068 | bottom_y = line_bottom_y (&it); |
35928349 | 5069 | bidi_unshelve_cache (itdata, 0); |
12c8b416 | 5070 | |
1de65f51 RS |
5071 | /* rms: On a non-window display, |
5072 | the value of it.vpos at the bottom of the screen | |
5073 | seems to be 1 larger than window_box_height (w). | |
5074 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5075 | when ZV is on the last screen line | |
5076 | moves to the previous screen line instead of the last one. */ | |
d3d50620 | 5077 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) |
1de65f51 RS |
5078 | height++; |
5079 | ||
12c8b416 GM |
5080 | /* Add in empty lines at the bottom of the window. */ |
5081 | if (bottom_y < height) | |
5082 | { | |
949cf20f | 5083 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5084 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5085 | } |
5086 | ||
c8bc6f65 GM |
5087 | if (old_buffer) |
5088 | set_buffer_internal (old_buffer); | |
5089 | ||
12c8b416 GM |
5090 | return it.vpos; |
5091 | } | |
5092 | ||
5093 | ||
a7ca3326 | 5094 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
666e158e | 5095 | doc: /* Center point in selected window and maybe redisplay frame. |
3b166f09 | 5096 | With a numeric prefix argument ARG, recenter putting point on screen line ARG |
12bb3111 | 5097 | relative to the selected window. If ARG is negative, it counts up from the |
fdb82f93 PJ |
5098 | bottom of the window. (ARG should be less than the height of the window.) |
5099 | ||
666e158e MB |
5100 | If ARG is omitted or nil, then recenter with point on the middle line of |
5101 | the selected window; if the variable `recenter-redisplay' is non-nil, | |
5102 | also erase the entire frame and redraw it (when `auto-resize-tool-bars' | |
5103 | is set to `grow-only', this resets the tool-bar's height to the minimum | |
5104 | height needed); if `recenter-redisplay' has the special value `tty', | |
53524d93 | 5105 | then only tty frames are redrawn. |
7d1d98ee | 5106 | |
fdb82f93 PJ |
5107 | Just C-u as prefix means put point in the center of the window |
5108 | and redisplay normally--don't erase and redraw the frame. */) | |
5842a27b | 5109 | (register Lisp_Object arg) |
7ab12479 | 5110 | { |
6df47b59 | 5111 | struct window *w = XWINDOW (selected_window); |
e74aeda8 | 5112 | struct buffer *buf = XBUFFER (w->contents); |
478292ed | 5113 | struct buffer *obuf = current_buffer; |
d7e6881a | 5114 | bool center_p = 0; |
d311d28c | 5115 | ptrdiff_t charpos, bytepos; |
71f02bc5 | 5116 | EMACS_INT iarg IF_LINT (= 0); |
f6b43440 | 5117 | int this_scroll_margin; |
7ab12479 | 5118 | |
0fa5d25b RS |
5119 | /* If redisplay is suppressed due to an error, try again. */ |
5120 | obuf->display_error_modiff = 0; | |
5121 | ||
413430c5 | 5122 | if (NILP (arg)) |
7ab12479 | 5123 | { |
666e158e MB |
5124 | if (!NILP (Vrecenter_redisplay) |
5125 | && (!EQ (Vrecenter_redisplay, Qtty) | |
5126 | || !NILP (Ftty_type (selected_frame)))) | |
5127 | { | |
ebfa62c0 | 5128 | ptrdiff_t i; |
f02d6d5c | 5129 | |
666e158e MB |
5130 | /* Invalidate pixel data calculated for all compositions. */ |
5131 | for (i = 0; i < n_compositions; i++) | |
5132 | composition_table[i]->font = NULL; | |
7ab12479 | 5133 | |
666e158e MB |
5134 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5135 | ||
5136 | Fredraw_frame (WINDOW_FRAME (w)); | |
5137 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
5138 | } | |
7d1d98ee | 5139 | |
6df47b59 | 5140 | center_p = 1; |
7ab12479 | 5141 | } |
413430c5 | 5142 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5143 | center_p = 1; |
7ab12479 JB |
5144 | else |
5145 | { | |
413430c5 | 5146 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5147 | CHECK_NUMBER (arg); |
ae12ecd7 | 5148 | iarg = XINT (arg); |
7ab12479 JB |
5149 | } |
5150 | ||
478292ed | 5151 | set_buffer_internal (buf); |
7ab12479 | 5152 | |
f6b43440 RS |
5153 | /* Do this after making BUF current |
5154 | in case scroll_margin is buffer-local. */ | |
71f02bc5 | 5155 | this_scroll_margin = |
5f24fa51 | 5156 | max (0, min (scroll_margin, w->total_lines / 4)); |
f6b43440 | 5157 | |
521b203e | 5158 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5159 | have variable-height lines and centering point on the basis of |
5160 | line counts would lead to strange effects. */ | |
d3d50620 | 5161 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5162 | { |
6df47b59 GM |
5163 | if (center_p) |
5164 | { | |
521b203e GM |
5165 | struct it it; |
5166 | struct text_pos pt; | |
57b3e30b | 5167 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5168 | |
521b203e GM |
5169 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5170 | start_display (&it, w, pt); | |
f204989e | 5171 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5172 | charpos = IT_CHARPOS (it); |
5173 | bytepos = IT_BYTEPOS (it); | |
35928349 | 5174 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5175 | } |
f6b43440 | 5176 | else if (iarg < 0) |
6df47b59 | 5177 | { |
521b203e GM |
5178 | struct it it; |
5179 | struct text_pos pt; | |
5895d7b9 | 5180 | ptrdiff_t nlines = min (PTRDIFF_MAX, -iarg); |
f204989e KS |
5181 | int extra_line_spacing; |
5182 | int h = window_box_height (w); | |
57b3e30b | 5183 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5184 | |
f6b43440 RS |
5185 | iarg = - max (-iarg, this_scroll_margin); |
5186 | ||
521b203e GM |
5187 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5188 | start_display (&it, w, pt); | |
f204989e KS |
5189 | |
5190 | /* Be sure we have the exact height of the full line containing PT. */ | |
e4cc2dfc | 5191 | move_it_by_lines (&it, 0); |
521b203e | 5192 | |
d466fa4d | 5193 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5194 | height minus what's displayed in the line containing PT, |
5195 | and the lines below. */ | |
f204989e KS |
5196 | it.current_y = 0; |
5197 | it.vpos = 0; | |
e4cc2dfc | 5198 | move_it_by_lines (&it, nlines); |
d466fa4d | 5199 | |
f204989e KS |
5200 | if (it.vpos == nlines) |
5201 | h -= it.current_y; | |
5202 | else | |
5203 | { | |
5204 | /* Last line has no newline */ | |
5205 | h -= line_bottom_y (&it); | |
5206 | it.vpos++; | |
5207 | } | |
5208 | ||
5209 | /* Don't reserve space for extra line spacing of last line. */ | |
5210 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5211 | |
5212 | /* If we can't move down NLINES lines because we hit | |
5213 | the end of the buffer, count in some empty lines. */ | |
5214 | if (it.vpos < nlines) | |
f204989e KS |
5215 | { |
5216 | nlines -= it.vpos; | |
5217 | extra_line_spacing = it.extra_line_spacing; | |
5218 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5219 | } | |
5220 | if (h <= 0) | |
57b3e30b | 5221 | { |
35928349 | 5222 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
5223 | return Qnil; |
5224 | } | |
201c831a | 5225 | |
f204989e | 5226 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5227 | start_display (&it, w, pt); |
f204989e KS |
5228 | it.current_y = 0; |
5229 | move_it_vertically_backward (&it, h); | |
5230 | ||
5231 | /* If extra line spacing is present, we may move too far | |
5232 | back. This causes the last line to be only partially | |
5233 | visible (which triggers redisplay to recenter that line | |
5234 | in the middle), so move forward. | |
5235 | But ignore extra line spacing on last line, as it is not | |
5236 | considered to be part of the visible height of the line. | |
5237 | */ | |
5238 | h += extra_line_spacing; | |
5239 | while (-it.current_y > h) | |
e4cc2dfc | 5240 | move_it_by_lines (&it, 1); |
f204989e | 5241 | |
521b203e GM |
5242 | charpos = IT_CHARPOS (it); |
5243 | bytepos = IT_BYTEPOS (it); | |
57b3e30b | 5244 | |
35928349 | 5245 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5246 | } |
521b203e GM |
5247 | else |
5248 | { | |
5249 | struct position pos; | |
f6b43440 | 5250 | |
f6b43440 RS |
5251 | iarg = max (iarg, this_scroll_margin); |
5252 | ||
c54aa166 | 5253 | pos = *vmotion (PT, PT_BYTE, -iarg, w); |
521b203e GM |
5254 | charpos = pos.bufpos; |
5255 | bytepos = pos.bytepos; | |
5256 | } | |
5257 | } | |
5258 | else | |
5259 | { | |
5260 | struct position pos; | |
5261 | int ht = window_internal_height (w); | |
5262 | ||
5263 | if (center_p) | |
a4429c5b | 5264 | iarg = ht / 2; |
f567c488 KS |
5265 | else if (iarg < 0) |
5266 | iarg += ht; | |
f6b43440 RS |
5267 | |
5268 | /* Don't let it get into the margin at either top or bottom. */ | |
2dd61a9b DA |
5269 | iarg = clip_to_bounds (this_scroll_margin, iarg, |
5270 | ht - this_scroll_margin - 1); | |
177c0ea7 | 5271 | |
c54aa166 | 5272 | pos = *vmotion (PT, PT_BYTE, - iarg, w); |
6df47b59 GM |
5273 | charpos = pos.bufpos; |
5274 | bytepos = pos.bytepos; | |
5275 | } | |
5276 | ||
5277 | /* Set the new window start. */ | |
e74aeda8 | 5278 | set_marker_both (w->start, w->contents, charpos, bytepos); |
9d93ce29 | 5279 | w->window_end_valid = 0; |
177c0ea7 | 5280 | |
c98ff5dd | 5281 | w->optional_new_start = 1; |
95605b1b | 5282 | |
c98ff5dd DA |
5283 | w->start_at_line_beg = (bytepos == BEGV_BYTE || |
5284 | FETCH_BYTE (bytepos - 1) == '\n'); | |
177c0ea7 | 5285 | |
478292ed | 5286 | set_buffer_internal (obuf); |
7ab12479 JB |
5287 | return Qnil; |
5288 | } | |
b7617575 | 5289 | |
81fe0836 | 5290 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5291 | 0, 1, 0, |
5292 | doc: /* Return the height in lines of the text display area of WINDOW. | |
52162052 | 5293 | WINDOW must be a live window and defaults to the selected one. |
8fef9de1 | 5294 | |
105216ed CY |
5295 | The returned height does not include the mode line, any header line, |
5296 | nor any partial-height lines at the bottom of the text area. */) | |
5842a27b | 5297 | (Lisp_Object window) |
81fe0836 | 5298 | { |
52162052 | 5299 | struct window *w = decode_live_window (window); |
81fe0836 | 5300 | int pixel_height = window_box_height (w); |
d3d50620 | 5301 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5302 | return make_number (line_height); |
5303 | } | |
5304 | ||
5305 | ||
7ab12479 JB |
5306 | \f |
5307 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5308 | 1, 1, "P", |
5309 | doc: /* Position point relative to window. | |
87e68db4 JB |
5310 | ARG nil means position point at center of window. |
5311 | Else, ARG specifies vertical position within the window; | |
fdb82f93 | 5312 | zero means top of window, negative means relative to bottom of window. */) |
5842a27b | 5313 | (Lisp_Object arg) |
7ab12479 | 5314 | { |
b7617575 GM |
5315 | struct window *w = XWINDOW (selected_window); |
5316 | int lines, start; | |
540b6aa0 | 5317 | Lisp_Object window; |
f6b43440 RS |
5318 | #if 0 |
5319 | int this_scroll_margin; | |
5320 | #endif | |
7ab12479 | 5321 | |
e74aeda8 DA |
5322 | if (!(BUFFERP (w->contents) && XBUFFER (w->contents) == current_buffer)) |
5323 | /* This test is needed to make sure PT/PT_BYTE make sense in w->contents | |
794b75c7 SM |
5324 | when passed below to set_marker_both. */ |
5325 | error ("move-to-window-line called from unrelated buffer"); | |
6dc1d2d3 | 5326 | |
b7617575 | 5327 | window = selected_window; |
d3d50620 | 5328 | start = marker_position (w->start); |
7ab12479 JB |
5329 | if (start < BEGV || start > ZV) |
5330 | { | |
b7617575 | 5331 | int height = window_internal_height (w); |
cd2be1dd | 5332 | Fvertical_motion (make_number (- (height / 2)), window); |
e74aeda8 | 5333 | set_marker_both (w->start, w->contents, PT, PT_BYTE); |
c98ff5dd DA |
5334 | w->start_at_line_beg = !NILP (Fbolp ()); |
5335 | w->force_start = 1; | |
7ab12479 JB |
5336 | } |
5337 | else | |
d3d50620 | 5338 | Fgoto_char (w->start); |
7ab12479 | 5339 | |
b7617575 | 5340 | lines = displayed_window_lines (w); |
f6b43440 RS |
5341 | |
5342 | #if 0 | |
71f02bc5 | 5343 | this_scroll_margin = max (0, min (scroll_margin, lines / 4)); |
f6b43440 RS |
5344 | #endif |
5345 | ||
b7617575 GM |
5346 | if (NILP (arg)) |
5347 | XSETFASTINT (arg, lines / 2); | |
5348 | else | |
5349 | { | |
71f02bc5 | 5350 | EMACS_INT iarg = XINT (Fprefix_numeric_value (arg)); |
f6b43440 RS |
5351 | |
5352 | if (iarg < 0) | |
5353 | iarg = iarg + lines; | |
5354 | ||
5355 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5356 | to a place inside the scroll margins (which would cause the | |
5357 | next redisplay to scroll). I wrote this code, but then concluded | |
5358 | it is probably better not to install it. However, it is here | |
5359 | inside #if 0 so as not to lose it. -- rms. */ | |
5360 | ||
5361 | /* Don't let it get into the margin at either top or bottom. */ | |
5362 | iarg = max (iarg, this_scroll_margin); | |
5363 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5364 | #endif | |
5365 | ||
5366 | arg = make_number (iarg); | |
b7617575 GM |
5367 | } |
5368 | ||
c8bc6f65 | 5369 | /* Skip past a partially visible first line. */ |
163784df | 5370 | if (w->vscroll) |
163784df MB |
5371 | XSETINT (arg, XINT (arg) + 1); |
5372 | ||
540b6aa0 | 5373 | return Fvertical_motion (arg, window); |
7ab12479 | 5374 | } |
5500c422 GM |
5375 | |
5376 | ||
7ab12479 | 5377 | \f |
5500c422 GM |
5378 | /*********************************************************************** |
5379 | Window Configuration | |
5380 | ***********************************************************************/ | |
5381 | ||
7ab12479 JB |
5382 | struct save_window_data |
5383 | { | |
b102ceb1 | 5384 | struct vectorlike_header header; |
bdc727bf | 5385 | Lisp_Object selected_frame; |
7ab12479 JB |
5386 | Lisp_Object current_window; |
5387 | Lisp_Object current_buffer; | |
5388 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5389 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5390 | Lisp_Object root_window; |
bdc727bf | 5391 | Lisp_Object focus_frame; |
cbff28e8 RS |
5392 | /* A vector, each of whose elements is a struct saved_window |
5393 | for one window. */ | |
7ab12479 | 5394 | Lisp_Object saved_windows; |
b05b4e27 SM |
5395 | |
5396 | /* All fields above are traced by the GC. | |
6b729d16 | 5397 | From `frame-cols' down, the fields are ignored by the GC. */ |
b05b4e27 SM |
5398 | |
5399 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
5400 | int frame_tool_bar_lines; | |
7ab12479 | 5401 | }; |
ff06df24 | 5402 | |
cbff28e8 | 5403 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 5404 | struct saved_window |
ea68264b | 5405 | { |
b102ceb1 | 5406 | struct vectorlike_header header; |
496e208e | 5407 | |
28545e04 | 5408 | Lisp_Object window, buffer, start, pointm, mark; |
949cf20f | 5409 | Lisp_Object left_col, top_line, total_cols, total_lines; |
496e208e | 5410 | Lisp_Object normal_cols, normal_lines; |
949cf20f | 5411 | Lisp_Object hscroll, min_hscroll; |
ea68264b GM |
5412 | Lisp_Object parent, prev; |
5413 | Lisp_Object start_at_line_beg; | |
5414 | Lisp_Object display_table; | |
949cf20f KS |
5415 | Lisp_Object left_margin_cols, right_margin_cols; |
5416 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
562dd5e9 | 5417 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type, dedicated; |
b6f67890 | 5418 | Lisp_Object combination_limit, window_parameters; |
ea68264b GM |
5419 | }; |
5420 | ||
7ab12479 JB |
5421 | #define SAVED_WINDOW_N(swv,n) \ |
5422 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
5423 | ||
5424 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 | 5425 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5842a27b | 5426 | (Lisp_Object object) |
7ab12479 | 5427 | { |
6ad0381c | 5428 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
5429 | } |
5430 | ||
3f8ab7bd | 5431 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 | 5432 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5842a27b | 5433 | (Lisp_Object config) |
3f8ab7bd RS |
5434 | { |
5435 | register struct save_window_data *data; | |
5436 | struct Lisp_Vector *saved_windows; | |
5437 | ||
663fbbba | 5438 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
5439 | |
5440 | data = (struct save_window_data *) XVECTOR (config); | |
5441 | saved_windows = XVECTOR (data->saved_windows); | |
d3d50620 | 5442 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
3f8ab7bd RS |
5443 | } |
5444 | ||
a7ca3326 | 5445 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
5446 | Sset_window_configuration, 1, 1, 0, |
5447 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
5448 | CONFIGURATION must be a value previously returned | |
5449 | by `current-window-configuration' (which see). | |
5450 | If CONFIGURATION was made from a frame that is now deleted, | |
5451 | only frame-independent values can be restored. In this case, | |
5452 | the return value is nil. Otherwise the value is t. */) | |
5842a27b | 5453 | (Lisp_Object configuration) |
7ab12479 | 5454 | { |
7ab12479 JB |
5455 | register struct save_window_data *data; |
5456 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 5457 | Lisp_Object new_current_buffer; |
fd482be5 | 5458 | Lisp_Object frame; |
a10c8269 | 5459 | struct frame *f; |
d311d28c | 5460 | ptrdiff_t old_point = -1; |
7ab12479 | 5461 | |
663fbbba | 5462 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 5463 | |
2f83aebe | 5464 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
5465 | saved_windows = XVECTOR (data->saved_windows); |
5466 | ||
7ab12479 | 5467 | new_current_buffer = data->current_buffer; |
e578f381 | 5468 | if (!BUFFER_LIVE_P (XBUFFER (new_current_buffer))) |
7ab12479 | 5469 | new_current_buffer = Qnil; |
72695e47 | 5470 | else |
73cadfc1 DK |
5471 | { |
5472 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
5473 | /* The code further down "preserves point" by saving here PT in |
5474 | old_point and then setting it later back into PT. When the | |
5475 | current-selected-window and the final-selected-window both show | |
5476 | the current buffer, this suffers from the problem that the | |
5477 | current PT is the window-point of the current-selected-window, | |
5478 | while the final PT is the point of the final-selected-window, so | |
5479 | this copy from one PT to the other would end up moving the | |
5480 | window-point of the final-selected-window to the window-point of | |
5481 | the current-selected-window. So we have to be careful which | |
5482 | point of the current-buffer we copy into old_point. */ | |
e74aeda8 | 5483 | if (EQ (XWINDOW (data->current_window)->contents, new_current_buffer) |
e67a1dea | 5484 | && WINDOWP (selected_window) |
e74aeda8 | 5485 | && EQ (XWINDOW (selected_window)->contents, new_current_buffer) |
e67a1dea | 5486 | && !EQ (selected_window, data->current_window)) |
4c1acb95 | 5487 | old_point = marker_position (XWINDOW (data->current_window)->pointm); |
e67a1dea SM |
5488 | else |
5489 | old_point = PT; | |
73cadfc1 | 5490 | else |
203eb0aa SM |
5491 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
5492 | point in new_current_buffer as of the last time this buffer was | |
5493 | used. This can be non-deterministic since it can be changed by | |
5494 | things like jit-lock by mere temporary selection of some random | |
5495 | window that happens to show this buffer. | |
5496 | So if possible we want this arbitrary choice of "which point" to | |
5497 | be the one from the to-be-selected-window so as to prevent this | |
5498 | window's cursor from being copied from another window. */ | |
e74aeda8 | 5499 | if (EQ (XWINDOW (data->current_window)->contents, new_current_buffer) |
203eb0aa SM |
5500 | /* If current_window = selected_window, its point is in BUF_PT. */ |
5501 | && !EQ (selected_window, data->current_window)) | |
4c1acb95 | 5502 | old_point = marker_position (XWINDOW (data->current_window)->pointm); |
203eb0aa SM |
5503 | else |
5504 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 5505 | } |
7ab12479 | 5506 | |
d3d50620 | 5507 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
fd482be5 | 5508 | f = XFRAME (frame); |
177c0ea7 | 5509 | |
fd482be5 JB |
5510 | /* If f is a dead frame, don't bother rebuilding its window tree. |
5511 | However, there is other stuff we should still try to do below. */ | |
5512 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 5513 | { |
6198ccd0 MR |
5514 | Lisp_Object window; |
5515 | Lisp_Object dead_windows = Qnil; | |
6a6ee00d | 5516 | register Lisp_Object tem, par, pers; |
fd482be5 JB |
5517 | register struct window *w; |
5518 | register struct saved_window *p; | |
5500c422 GM |
5519 | struct window *root_window; |
5520 | struct window **leaf_windows; | |
5521 | int n_leaf_windows; | |
71f02bc5 PE |
5522 | ptrdiff_t k; |
5523 | int i, n; | |
fd482be5 JB |
5524 | |
5525 | /* If the frame has been resized since this window configuration was | |
5526 | made, we change the frame to the size specified in the | |
5527 | configuration, restore the configuration, and then resize it | |
5528 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
5529 | int previous_frame_lines = FRAME_LINES (f); |
5530 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 5531 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 5532 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 5533 | |
37b9743e MR |
5534 | /* Don't do this within the main loop below: This may call Lisp |
5535 | code and is thus potentially unsafe while input is blocked. */ | |
5536 | for (k = 0; k < saved_windows->header.size; k++) | |
5537 | { | |
5538 | p = SAVED_WINDOW_N (saved_windows, k); | |
5539 | window = p->window; | |
5540 | w = XWINDOW (window); | |
e74aeda8 DA |
5541 | if (BUFFERP (w->contents) |
5542 | && !EQ (w->contents, p->buffer) | |
e578f381 | 5543 | && BUFFER_LIVE_P (XBUFFER (p->buffer))) |
37b9743e MR |
5544 | /* If a window we restore gets another buffer, record the |
5545 | window's old buffer. */ | |
5546 | call1 (Qrecord_window_buffer, window); | |
5547 | } | |
5548 | ||
d2b35234 RS |
5549 | /* The mouse highlighting code could get screwed up |
5550 | if it runs during this. */ | |
4d7e6e51 | 5551 | block_input (); |
d2b35234 | 5552 | |
b05b4e27 SM |
5553 | if (data->frame_lines != previous_frame_lines |
5554 | || data->frame_cols != previous_frame_cols) | |
5555 | change_frame_size (f, data->frame_lines, | |
5556 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 5557 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 5558 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 5559 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
5560 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
5561 | make_number (0)); | |
4314246f | 5562 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 5563 | if (data->frame_tool_bar_lines |
9ea173e8 | 5564 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
5565 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
5566 | make_number (0)); | |
4314246f | 5567 | #endif |
217f2871 | 5568 | #endif |
fd482be5 | 5569 | |
a46c0153 RS |
5570 | /* "Swap out" point from the selected window's buffer |
5571 | into the window itself. (Normally the pointm of the selected | |
5572 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
5573 | restoring the window contents, and prevent it from |
5574 | being done later on when we select a new window. */ | |
e74aeda8 | 5575 | if (! NILP (XWINDOW (selected_window)->contents)) |
596ae0cf RS |
5576 | { |
5577 | w = XWINDOW (selected_window); | |
d3d50620 | 5578 | set_marker_both (w->pointm, |
e74aeda8 DA |
5579 | w->contents, |
5580 | BUF_PT (XBUFFER (w->contents)), | |
5581 | BUF_PT_BYTE (XBUFFER (w->contents))); | |
596ae0cf RS |
5582 | } |
5583 | ||
fd482be5 | 5584 | windows_or_buffers_changed++; |
29aeee73 | 5585 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 5586 | |
5500c422 | 5587 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 5588 | is a serious redisplay flickering problem. What we would |
5500c422 | 5589 | really like to do is to free only those matrices not reused |
9d14503e | 5590 | below. */ |
5500c422 | 5591 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); |
38182d90 PE |
5592 | leaf_windows = alloca (count_windows (root_window) |
5593 | * sizeof *leaf_windows); | |
5500c422 GM |
5594 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); |
5595 | ||
fd482be5 JB |
5596 | /* Kludge Alert! |
5597 | Mark all windows now on frame as "deleted". | |
5598 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 5599 | |
fd482be5 JB |
5600 | Save their current buffers in their height fields, since we may |
5601 | need it later, if a buffer saved in the configuration is now | |
5602 | dead. */ | |
be7f5545 | 5603 | delete_all_child_windows (FRAME_ROOT_WINDOW (f)); |
fd482be5 | 5604 | |
eab3844f | 5605 | for (k = 0; k < saved_windows->header.size; k++) |
fd482be5 JB |
5606 | { |
5607 | p = SAVED_WINDOW_N (saved_windows, k); | |
6198ccd0 MR |
5608 | window = p->window; |
5609 | w = XWINDOW (window); | |
e8c17b81 | 5610 | wset_next (w, Qnil); |
7ab12479 | 5611 | |
fd482be5 | 5612 | if (!NILP (p->parent)) |
e8c17b81 PE |
5613 | wset_parent |
5614 | (w, SAVED_WINDOW_N (saved_windows, XFASTINT (p->parent))->window); | |
fd482be5 | 5615 | else |
e8c17b81 | 5616 | wset_parent (w, Qnil); |
7ab12479 | 5617 | |
fd482be5 | 5618 | if (!NILP (p->prev)) |
7ab12479 | 5619 | { |
e8c17b81 PE |
5620 | wset_prev |
5621 | (w, SAVED_WINDOW_N (saved_windows, XFASTINT (p->prev))->window); | |
5622 | wset_next (XWINDOW (w->prev), p->window); | |
fd482be5 JB |
5623 | } |
5624 | else | |
5625 | { | |
e8c17b81 | 5626 | wset_prev (w, Qnil); |
d3d50620 | 5627 | if (!NILP (w->parent)) |
e74aeda8 DA |
5628 | wset_combination (XWINDOW (w->parent), |
5629 | (XINT (p->total_cols) | |
5630 | != XWINDOW (w->parent)->total_cols), | |
5631 | p->window); | |
fd482be5 JB |
5632 | } |
5633 | ||
095d384d DA |
5634 | /* If we squirreled away the buffer, restore it now. */ |
5635 | if (BUFFERP (w->combination_limit)) | |
5636 | wset_buffer (w, w->combination_limit); | |
5f24fa51 DA |
5637 | w->left_col = XFASTINT (p->left_col); |
5638 | w->top_line = XFASTINT (p->top_line); | |
5639 | w->total_cols = XFASTINT (p->total_cols); | |
5640 | w->total_lines = XFASTINT (p->total_lines); | |
e8c17b81 PE |
5641 | wset_normal_cols (w, p->normal_cols); |
5642 | wset_normal_lines (w, p->normal_lines); | |
80b00b08 DA |
5643 | w->hscroll = XFASTINT (p->hscroll); |
5644 | w->min_hscroll = XFASTINT (p->min_hscroll); | |
e8c17b81 | 5645 | wset_display_table (w, p->display_table); |
eeaf9bf3 DA |
5646 | w->left_margin_cols = XINT (p->left_margin_cols); |
5647 | w->right_margin_cols = XINT (p->right_margin_cols); | |
9e37ee3b DA |
5648 | w->left_fringe_width = XINT (p->left_fringe_width); |
5649 | w->right_fringe_width = XINT (p->right_fringe_width); | |
2af3565e | 5650 | w->fringes_outside_margins = !NILP (p->fringes_outside_margins); |
38a2c910 | 5651 | w->scroll_bar_width = XINT (p->scroll_bar_width); |
e8c17b81 PE |
5652 | wset_vertical_scroll_bar_type (w, p->vertical_scroll_bar_type); |
5653 | wset_dedicated (w, p->dedicated); | |
5654 | wset_combination_limit (w, p->combination_limit); | |
6a6ee00d MR |
5655 | /* Restore any window parameters that have been saved. |
5656 | Parameters that have not been saved are left alone. */ | |
5657 | for (tem = p->window_parameters; CONSP (tem); tem = XCDR (tem)) | |
5658 | { | |
5659 | pers = XCAR (tem); | |
5660 | if (CONSP (pers)) | |
5661 | { | |
5662 | if (NILP (XCDR (pers))) | |
5663 | { | |
d3d50620 | 5664 | par = Fassq (XCAR (pers), w->window_parameters); |
6a6ee00d MR |
5665 | if (CONSP (par) && !NILP (XCDR (par))) |
5666 | /* Reset a parameter to nil if and only if it | |
5667 | has a non-nil association. Don't make new | |
5668 | associations. */ | |
5669 | Fsetcdr (par, Qnil); | |
5670 | } | |
5671 | else | |
5672 | /* Always restore a non-nil value. */ | |
5673 | Fset_window_parameter (window, XCAR (pers), XCDR (pers)); | |
5674 | } | |
5675 | } | |
5676 | ||
e74aeda8 | 5677 | if (BUFFERP (p->buffer) && BUFFER_LIVE_P (XBUFFER (p->buffer))) |
6198ccd0 MR |
5678 | /* If saved buffer is alive, install it. */ |
5679 | { | |
e8c17b81 PE |
5680 | wset_buffer (w, p->buffer); |
5681 | w->start_at_line_beg = !NILP (p->start_at_line_beg); | |
e74aeda8 | 5682 | set_marker_restricted (w->start, p->start, w->contents); |
e8c17b81 | 5683 | set_marker_restricted (w->pointm, p->pointm, |
e74aeda8 DA |
5684 | w->contents); |
5685 | Fset_marker (BVAR (XBUFFER (w->contents), mark), | |
5686 | p->mark, w->contents); | |
e8c17b81 PE |
5687 | |
5688 | /* As documented in Fcurrent_window_configuration, don't | |
5689 | restore the location of point in the buffer which was | |
5690 | current when the window configuration was recorded. */ | |
5691 | if (!EQ (p->buffer, new_current_buffer) | |
5692 | && XBUFFER (p->buffer) == current_buffer) | |
5693 | Fgoto_char (w->pointm); | |
077288cf | 5694 | } |
e74aeda8 DA |
5695 | else if (BUFFERP (w->contents) && BUFFER_LIVE_P (XBUFFER (w->contents))) |
5696 | /* Keep window's old buffer; make sure the markers are real. */ | |
5697 | { | |
5698 | /* Set window markers at start of visible range. */ | |
5699 | if (XMARKER (w->start)->buffer == 0) | |
5700 | set_marker_restricted_both (w->start, w->contents, 0, 0); | |
5701 | if (XMARKER (w->pointm)->buffer == 0) | |
5702 | set_marker_restricted_both | |
5703 | (w->pointm, w->contents, | |
5704 | BUF_PT (XBUFFER (w->contents)), | |
5705 | BUF_PT_BYTE (XBUFFER (w->contents))); | |
5706 | w->start_at_line_beg = 1; | |
5707 | } | |
5708 | else if (!NILP (w->start)) | |
5709 | /* Leaf window has no live buffer, get one. */ | |
fd482be5 | 5710 | { |
6198ccd0 MR |
5711 | /* Get the buffer via other_buffer_safely in order to |
5712 | avoid showing an unimportant buffer and, if necessary, to | |
5713 | recreate *scratch* in the course (part of Juanma's bs-show | |
5714 | scenario from March 2011). */ | |
e8c17b81 | 5715 | wset_buffer (w, other_buffer_safely (Fcurrent_buffer ())); |
6198ccd0 MR |
5716 | /* This will set the markers to beginning of visible |
5717 | range. */ | |
e74aeda8 DA |
5718 | set_marker_restricted_both (w->start, w->contents, 0, 0); |
5719 | set_marker_restricted_both (w->pointm, w->contents, 0, 0); | |
c98ff5dd | 5720 | w->start_at_line_beg = 1; |
d3d50620 | 5721 | if (!NILP (w->dedicated)) |
6198ccd0 MR |
5722 | /* Record this window as dead. */ |
5723 | dead_windows = Fcons (window, dead_windows); | |
5724 | /* Make sure window is no more dedicated. */ | |
e8c17b81 | 5725 | wset_dedicated (w, Qnil); |
7ab12479 JB |
5726 | } |
5727 | } | |
9ace597f | 5728 | |
f00af5b1 | 5729 | fset_root_window (f, data->root_window); |
a46c0153 RS |
5730 | /* Arrange *not* to restore point in the buffer that was |
5731 | current when the window configuration was saved. */ | |
e74aeda8 | 5732 | if (EQ (XWINDOW (data->current_window)->contents, new_current_buffer)) |
d3d50620 | 5733 | set_marker_restricted (XWINDOW (data->current_window)->pointm, |
18787f5e | 5734 | make_number (old_point), |
e74aeda8 | 5735 | XWINDOW (data->current_window)->contents); |
177c0ea7 | 5736 | |
6198ccd0 MR |
5737 | /* In the following call to `select-window', prevent "swapping out |
5738 | point" in the old selected window using the buffer that has | |
5739 | been restored into it. We already swapped out that point from | |
5740 | that window's old buffer. */ | |
e6b84b30 | 5741 | select_window (data->current_window, Qnil, 1); |
e74aeda8 | 5742 | BVAR (XBUFFER (XWINDOW (selected_window)->contents), last_selected_window) |
396a830c | 5743 | = selected_window; |
7ab12479 | 5744 | |
db269683 | 5745 | if (NILP (data->focus_frame) |
017b2bad | 5746 | || (FRAMEP (data->focus_frame) |
db269683 JB |
5747 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
5748 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 5749 | |
fd482be5 | 5750 | /* Set the screen height to the value it had before this function. */ |
949cf20f KS |
5751 | if (previous_frame_lines != FRAME_LINES (f) |
5752 | || previous_frame_cols != FRAME_COLS (f)) | |
5753 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 5754 | 0, 0, 0); |
e3678b64 | 5755 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 5756 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
5757 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
5758 | make_number (0)); | |
4314246f | 5759 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5760 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
5761 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
5762 | make_number (0)); | |
4314246f | 5763 | #endif |
217f2871 | 5764 | #endif |
d2b35234 | 5765 | |
5500c422 | 5766 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
5767 | for (i = n = 0; i < n_leaf_windows; ++i) |
5768 | { | |
e74aeda8 DA |
5769 | if (NILP (leaf_windows[i]->contents)) |
5770 | free_window_matrices (leaf_windows[i]); | |
5771 | else if (EQ (leaf_windows[i]->contents, new_current_buffer)) | |
c4280705 GM |
5772 | ++n; |
5773 | } | |
177c0ea7 | 5774 | |
5500c422 | 5775 | adjust_glyphs (f); |
4d7e6e51 | 5776 | unblock_input (); |
756b6edc | 5777 | |
6198ccd0 MR |
5778 | /* Scan dead buffer windows. */ |
5779 | for (; CONSP (dead_windows); dead_windows = XCDR (dead_windows)) | |
5780 | { | |
5781 | window = XCAR (dead_windows); | |
5782 | if (WINDOW_LIVE_P (window) && !EQ (window, FRAME_ROOT_WINDOW (f))) | |
5783 | delete_deletable_window (window); | |
5784 | } | |
5785 | ||
478292ed RS |
5786 | /* Fselect_window will have made f the selected frame, so we |
5787 | reselect the proper frame here. Fhandle_switch_frame will change the | |
5788 | selected window too, but that doesn't make the call to | |
5789 | Fselect_window above totally superfluous; it still sets f's | |
5790 | selected window. */ | |
5791 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
c6932ecd | 5792 | do_switch_frame (data->selected_frame, 0, 0, Qnil); |
478292ed | 5793 | |
eeca6f6f | 5794 | run_window_configuration_change_hook (f); |
478292ed | 5795 | } |
bdc727bf JB |
5796 | |
5797 | if (!NILP (new_current_buffer)) | |
c4b6914d MR |
5798 | { |
5799 | Fset_buffer (new_current_buffer); | |
5800 | /* If the new current buffer doesn't appear in the selected | |
5801 | window, go to its old point (see bug#12208). */ | |
e74aeda8 | 5802 | if (!EQ (XWINDOW (data->current_window)->contents, new_current_buffer)) |
c4b6914d MR |
5803 | Fgoto_char (make_number (old_point)); |
5804 | } | |
bdc727bf | 5805 | |
478292ed | 5806 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 5807 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 5808 | |
3f8ab7bd | 5809 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
5810 | } |
5811 | ||
27e498e6 PE |
5812 | void |
5813 | restore_window_configuration (Lisp_Object configuration) | |
5814 | { | |
5815 | Fset_window_configuration (configuration); | |
5816 | } | |
5817 | ||
562dd5e9 | 5818 | |
e74aeda8 DA |
5819 | /* If WINDOW is an internal window, recursively delete all child windows |
5820 | reachable via the next and contents slots of WINDOW. Otherwise setup | |
5821 | WINDOW to not show any buffer. */ | |
5822 | ||
fd482be5 | 5823 | void |
be7f5545 | 5824 | delete_all_child_windows (Lisp_Object window) |
7ab12479 | 5825 | { |
fa8a67e6 MR |
5826 | register struct window *w; |
5827 | ||
5828 | w = XWINDOW (window); | |
5829 | ||
d3d50620 | 5830 | if (!NILP (w->next)) |
fa8a67e6 | 5831 | /* Delete WINDOW's siblings (we traverse postorderly). */ |
d3d50620 | 5832 | delete_all_child_windows (w->next); |
605be8af | 5833 | |
e74aeda8 | 5834 | if (WINDOWP (w->contents)) |
fa8a67e6 | 5835 | { |
e74aeda8 DA |
5836 | delete_all_child_windows (w->contents); |
5837 | wset_combination (w, 0, Qnil); | |
fa8a67e6 | 5838 | } |
e74aeda8 | 5839 | else if (BUFFERP (w->contents)) |
fa8a67e6 MR |
5840 | { |
5841 | unshow_buffer (w); | |
d3d50620 DA |
5842 | unchain_marker (XMARKER (w->pointm)); |
5843 | unchain_marker (XMARKER (w->start)); | |
095d384d DA |
5844 | /* Since combination limit makes sense for an internal windows |
5845 | only, we use this slot to save the buffer for the sake of | |
5846 | possible resurrection in Fset_window_configuration. */ | |
e74aeda8 | 5847 | wset_combination_limit (w, w->contents); |
e8c17b81 | 5848 | wset_buffer (w, Qnil); |
fa8a67e6 | 5849 | } |
acf70840 GM |
5850 | |
5851 | Vwindow_list = Qnil; | |
7ab12479 JB |
5852 | } |
5853 | \f | |
5854 | static int | |
971de7fb | 5855 | count_windows (register struct window *window) |
7ab12479 JB |
5856 | { |
5857 | register int count = 1; | |
d3d50620 DA |
5858 | if (!NILP (window->next)) |
5859 | count += count_windows (XWINDOW (window->next)); | |
e74aeda8 DA |
5860 | if (WINDOWP (window->contents)) |
5861 | count += count_windows (XWINDOW (window->contents)); | |
7ab12479 JB |
5862 | return count; |
5863 | } | |
5864 | ||
5500c422 | 5865 | |
177c0ea7 | 5866 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 | 5867 | Value is last index + 1. */ |
5500c422 | 5868 | static int |
971de7fb | 5869 | get_leaf_windows (struct window *w, struct window **flat, int i) |
5500c422 GM |
5870 | { |
5871 | while (w) | |
5872 | { | |
e74aeda8 DA |
5873 | if (WINDOWP (w->contents)) |
5874 | i = get_leaf_windows (XWINDOW (w->contents), flat, i); | |
177c0ea7 | 5875 | else |
5500c422 GM |
5876 | flat[i++] = w; |
5877 | ||
d3d50620 | 5878 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
5500c422 GM |
5879 | } |
5880 | ||
5881 | return i; | |
5882 | } | |
5883 | ||
5884 | ||
5885 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
c80e3b4a | 5886 | null if W's current matrix is invalid, so that no meaningful glyph |
5500c422 | 5887 | can be returned. */ |
5500c422 | 5888 | struct glyph * |
971de7fb | 5889 | get_phys_cursor_glyph (struct window *w) |
5500c422 GM |
5890 | { |
5891 | struct glyph_row *row; | |
5892 | struct glyph *glyph; | |
f8fe6f96 | 5893 | int hpos = w->phys_cursor.hpos; |
5500c422 | 5894 | |
f8fe6f96 EZ |
5895 | if (!(w->phys_cursor.vpos >= 0 |
5896 | && w->phys_cursor.vpos < w->current_matrix->nrows)) | |
5897 | return NULL; | |
5898 | ||
5899 | row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos); | |
5900 | if (!row->enabled_p) | |
5901 | return NULL; | |
5902 | ||
80b00b08 | 5903 | if (w->hscroll) |
f8fe6f96 EZ |
5904 | { |
5905 | /* When the window is hscrolled, cursor hpos can legitimately be | |
5906 | out of bounds, but we draw the cursor at the corresponding | |
5907 | window margin in that case. */ | |
5908 | if (!row->reversed_p && hpos < 0) | |
5909 | hpos = 0; | |
5910 | if (row->reversed_p && hpos >= row->used[TEXT_AREA]) | |
5911 | hpos = row->used[TEXT_AREA] - 1; | |
5912 | } | |
5500c422 | 5913 | |
7216e43b | 5914 | if (0 <= hpos && hpos < row->used[TEXT_AREA]) |
f8fe6f96 | 5915 | glyph = row->glyphs[TEXT_AREA] + hpos; |
5500c422 GM |
5916 | else |
5917 | glyph = NULL; | |
5918 | ||
5919 | return glyph; | |
5920 | } | |
5921 | ||
5922 | ||
7ab12479 | 5923 | static int |
971de7fb | 5924 | save_window_save (Lisp_Object window, struct Lisp_Vector *vector, int i) |
7ab12479 JB |
5925 | { |
5926 | register struct saved_window *p; | |
5927 | register struct window *w; | |
6a6ee00d | 5928 | register Lisp_Object tem, pers, par; |
7ab12479 | 5929 | |
e74aeda8 | 5930 | for (; !NILP (window); window = w->next) |
7ab12479 JB |
5931 | { |
5932 | p = SAVED_WINDOW_N (vector, i); | |
5933 | w = XWINDOW (window); | |
5934 | ||
e8c17b81 | 5935 | wset_temslot (w, make_number (i)); i++; |
7ab12479 | 5936 | p->window = window; |
e74aeda8 | 5937 | p->buffer = (WINDOW_LEAF_P (w) ? w->contents : Qnil); |
5f24fa51 DA |
5938 | p->left_col = make_number (w->left_col); |
5939 | p->top_line = make_number (w->top_line); | |
5940 | p->total_cols = make_number (w->total_cols); | |
5941 | p->total_lines = make_number (w->total_lines); | |
d3d50620 DA |
5942 | p->normal_cols = w->normal_cols; |
5943 | p->normal_lines = w->normal_lines; | |
80b00b08 DA |
5944 | XSETFASTINT (p->hscroll, w->hscroll); |
5945 | XSETFASTINT (p->min_hscroll, w->min_hscroll); | |
d3d50620 | 5946 | p->display_table = w->display_table; |
eeaf9bf3 DA |
5947 | p->left_margin_cols = make_number (w->left_margin_cols); |
5948 | p->right_margin_cols = make_number (w->right_margin_cols); | |
9e37ee3b DA |
5949 | p->left_fringe_width = make_number (w->left_fringe_width); |
5950 | p->right_fringe_width = make_number (w->right_fringe_width); | |
2af3565e | 5951 | p->fringes_outside_margins = w->fringes_outside_margins ? Qt : Qnil; |
38a2c910 | 5952 | p->scroll_bar_width = make_number (w->scroll_bar_width); |
d3d50620 DA |
5953 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; |
5954 | p->dedicated = w->dedicated; | |
5955 | p->combination_limit = w->combination_limit; | |
6a6ee00d MR |
5956 | p->window_parameters = Qnil; |
5957 | ||
5958 | if (!NILP (Vwindow_persistent_parameters)) | |
5959 | { | |
5960 | /* Run cycle detection on Vwindow_persistent_parameters. */ | |
5961 | Lisp_Object tortoise, hare; | |
5962 | ||
5963 | hare = tortoise = Vwindow_persistent_parameters; | |
5964 | while (CONSP (hare)) | |
5965 | { | |
5966 | hare = XCDR (hare); | |
5967 | if (!CONSP (hare)) | |
5968 | break; | |
5969 | ||
5970 | hare = XCDR (hare); | |
5971 | tortoise = XCDR (tortoise); | |
5972 | ||
5973 | if (EQ (hare, tortoise)) | |
5974 | /* Reset Vwindow_persistent_parameters to Qnil. */ | |
5975 | { | |
5976 | Vwindow_persistent_parameters = Qnil; | |
5977 | break; | |
5978 | } | |
5979 | } | |
5980 | ||
5981 | for (tem = Vwindow_persistent_parameters; CONSP (tem); | |
5982 | tem = XCDR (tem)) | |
5983 | { | |
5984 | pers = XCAR (tem); | |
34a02f46 MR |
5985 | /* Save values for persistent window parameters. */ |
5986 | if (CONSP (pers) && !NILP (XCDR (pers))) | |
6a6ee00d | 5987 | { |
d3d50620 | 5988 | par = Fassq (XCAR (pers), w->window_parameters); |
6a6ee00d MR |
5989 | if (NILP (par)) |
5990 | /* If the window has no value for the parameter, | |
5991 | make one. */ | |
5992 | p->window_parameters = Fcons (Fcons (XCAR (pers), Qnil), | |
5993 | p->window_parameters); | |
5994 | else | |
5995 | /* If the window has a value for the parameter, | |
5996 | save it. */ | |
5997 | p->window_parameters = Fcons (Fcons (XCAR (par), | |
5998 | XCDR (par)), | |
5999 | p->window_parameters); | |
6000 | } | |
6001 | } | |
6002 | } | |
6003 | ||
e74aeda8 | 6004 | if (BUFFERP (w->contents)) |
7ab12479 | 6005 | { |
6a6ee00d MR |
6006 | /* Save w's value of point in the window configuration. If w |
6007 | is the selected window, then get the value of point from | |
6008 | the buffer; pointm is garbage in the selected window. */ | |
7ab12479 | 6009 | if (EQ (window, selected_window)) |
e74aeda8 DA |
6010 | p->pointm = build_marker (XBUFFER (w->contents), |
6011 | BUF_PT (XBUFFER (w->contents)), | |
6012 | BUF_PT_BYTE (XBUFFER (w->contents))); | |
7ab12479 | 6013 | else |
d3d50620 | 6014 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
de8c03dc SM |
6015 | XMARKER (p->pointm)->insertion_type |
6016 | = !NILP (Vwindow_point_insertion_type); | |
7ab12479 | 6017 | |
d3d50620 | 6018 | p->start = Fcopy_marker (w->start, Qnil); |
c98ff5dd | 6019 | p->start_at_line_beg = w->start_at_line_beg ? Qt : Qnil; |
7ab12479 | 6020 | |
e74aeda8 | 6021 | tem = BVAR (XBUFFER (w->contents), mark); |
eeb82665 | 6022 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6023 | } |
6024 | else | |
6025 | { | |
6026 | p->pointm = Qnil; | |
6027 | p->start = Qnil; | |
6028 | p->mark = Qnil; | |
6029 | p->start_at_line_beg = Qnil; | |
6030 | } | |
6031 | ||
d3d50620 | 6032 | if (NILP (w->parent)) |
7ab12479 JB |
6033 | p->parent = Qnil; |
6034 | else | |
d3d50620 | 6035 | p->parent = XWINDOW (w->parent)->temslot; |
7ab12479 | 6036 | |
d3d50620 | 6037 | if (NILP (w->prev)) |
7ab12479 JB |
6038 | p->prev = Qnil; |
6039 | else | |
d3d50620 | 6040 | p->prev = XWINDOW (w->prev)->temslot; |
7ab12479 | 6041 | |
e74aeda8 DA |
6042 | if (WINDOWP (w->contents)) |
6043 | i = save_window_save (w->contents, vector, i); | |
7ab12479 JB |
6044 | } |
6045 | ||
6046 | return i; | |
6047 | } | |
6048 | ||
a7ca3326 | 6049 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6050 | Scurrent_window_configuration, 0, 1, 0, |
6051 | doc: /* Return an object representing the current window configuration of FRAME. | |
6052 | If FRAME is nil or omitted, use the selected frame. | |
6053 | This describes the number of windows, their sizes and current buffers, | |
6054 | and for each displayed buffer, where display starts, and the positions of | |
6055 | point and mark. An exception is made for point in the current buffer: | |
6056 | its value is -not- saved. | |
6057 | This also records the currently selected frame, and FRAME's focus | |
34a02f46 MR |
6058 | redirection (see `redirect-frame-focus'). The variable |
6059 | `window-persistent-parameters' specifies which window parameters are | |
6060 | saved by this function. */) | |
5842a27b | 6061 | (Lisp_Object frame) |
7ab12479 JB |
6062 | { |
6063 | register Lisp_Object tem; | |
6064 | register int n_windows; | |
6065 | register struct save_window_data *data; | |
6066 | register int i; | |
d9f07150 | 6067 | struct frame *f = decode_live_frame (frame); |
7ab12479 | 6068 | |
44fa5b1e | 6069 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
6070 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
6071 | PVEC_WINDOW_CONFIGURATION); | |
6072 | ||
6073 | data->frame_cols = FRAME_COLS (f); | |
6074 | data->frame_lines = FRAME_LINES (f); | |
6075 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
6076 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 6077 | data->selected_frame = selected_frame; |
44fa5b1e | 6078 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6079 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6080 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6081 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6082 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6083 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
25721f5b | 6084 | tem = make_uninit_vector (n_windows); |
7ab12479 JB |
6085 | data->saved_windows = tem; |
6086 | for (i = 0; i < n_windows; i++) | |
28be1ada | 6087 | ASET (tem, i, |
25721f5b | 6088 | Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil)); |
a1d58e5b | 6089 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6090 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6091 | return (tem); |
6092 | } | |
25554267 DA |
6093 | |
6094 | /* Called after W's margins, fringes or scroll bars was adjusted. */ | |
6095 | ||
6096 | static void | |
6097 | apply_window_adjustment (struct window *w) | |
6098 | { | |
6099 | eassert (w); | |
6100 | adjust_window_margins (w); | |
6101 | clear_glyph_matrix (w->current_matrix); | |
6102 | w->window_end_valid = 0; | |
6103 | windows_or_buffers_changed++; | |
6104 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6105 | } | |
6106 | ||
5500c422 GM |
6107 | \f |
6108 | /*********************************************************************** | |
6109 | Marginal Areas | |
6110 | ***********************************************************************/ | |
6111 | ||
25554267 DA |
6112 | static struct window * |
6113 | set_window_margins (struct window *w, Lisp_Object left_width, | |
6114 | Lisp_Object right_width) | |
5500c422 | 6115 | { |
eeaf9bf3 | 6116 | int left, right; |
5500c422 | 6117 | |
eeaf9bf3 | 6118 | /* FIXME: what about margins that are too wide? */ |
eeaf9bf3 DA |
6119 | left = (NILP (left_width) ? 0 |
6120 | : (CHECK_NATNUM (left_width), XINT (left_width))); | |
6121 | right = (NILP (right_width) ? 0 | |
6122 | : (CHECK_NATNUM (right_width), XINT (right_width))); | |
5500c422 | 6123 | |
eeaf9bf3 | 6124 | if (w->left_margin_cols != left || w->right_margin_cols != right) |
6b61353c | 6125 | { |
eeaf9bf3 DA |
6126 | w->left_margin_cols = left; |
6127 | w->right_margin_cols = right; | |
25554267 DA |
6128 | return w; |
6129 | } | |
6130 | return NULL; | |
6131 | } | |
949cf20f | 6132 | |
25554267 DA |
6133 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, |
6134 | 2, 3, 0, | |
6135 | doc: /* Set width of marginal areas of window WINDOW. | |
6136 | WINDOW must be a live window and defaults to the selected one. | |
949cf20f | 6137 | |
25554267 DA |
6138 | Second arg LEFT-WIDTH specifies the number of character cells to |
6139 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6140 | does the same for the right marginal area. A nil width parameter | |
6141 | means no margin. | |
5500c422 | 6142 | |
25554267 DA |
6143 | Return t if any margin was actually changed and nil otherwise. */) |
6144 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width) | |
6145 | { | |
6146 | struct window *w = set_window_margins (decode_live_window (window), | |
6147 | left_width, right_width); | |
6148 | return w ? (apply_window_adjustment (w), Qt) : Qnil; | |
5500c422 GM |
6149 | } |
6150 | ||
6151 | ||
6152 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6153 | 0, 1, 0, | |
fdb82f93 | 6154 | doc: /* Get width of marginal areas of window WINDOW. |
52162052 MR |
6155 | WINDOW must be a live window and defaults to the selected one. |
6156 | ||
fdb82f93 PJ |
6157 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). |
6158 | If a marginal area does not exist, its width will be returned | |
6159 | as nil. */) | |
5842a27b | 6160 | (Lisp_Object window) |
5500c422 | 6161 | { |
52162052 | 6162 | struct window *w = decode_live_window (window); |
2fa611b7 EZ |
6163 | return Fcons (w->left_margin_cols ? make_number (w->left_margin_cols) : Qnil, |
6164 | w->right_margin_cols ? make_number (w->right_margin_cols) : Qnil); | |
949cf20f KS |
6165 | } |
6166 | ||
6167 | ||
6168 | \f | |
6169 | /*********************************************************************** | |
6170 | Fringes | |
6171 | ***********************************************************************/ | |
6172 | ||
25554267 DA |
6173 | static struct window * |
6174 | set_window_fringes (struct window *w, Lisp_Object left_width, | |
6175 | Lisp_Object right_width, Lisp_Object outside_margins) | |
949cf20f | 6176 | { |
9e37ee3b | 6177 | int left, right, outside = !NILP (outside_margins); |
949cf20f | 6178 | |
9e37ee3b DA |
6179 | left = (NILP (left_width) ? -1 |
6180 | : (CHECK_NATNUM (left_width), XINT (left_width))); | |
6181 | right = (NILP (right_width) ? -1 | |
6182 | : (CHECK_NATNUM (right_width), XINT (right_width))); | |
5a857365 | 6183 | |
9e37ee3b | 6184 | /* Do nothing on a tty or if nothing to actually change. */ |
d46c6df5 | 6185 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
9e37ee3b DA |
6186 | && (w->left_fringe_width != left |
6187 | || w->right_fringe_width != right | |
2af3565e | 6188 | || w->fringes_outside_margins != outside)) |
949cf20f | 6189 | { |
9e37ee3b DA |
6190 | w->left_fringe_width = left; |
6191 | w->right_fringe_width = right; | |
2af3565e | 6192 | w->fringes_outside_margins = outside; |
25554267 DA |
6193 | return w; |
6194 | } | |
6195 | return NULL; | |
6196 | } | |
949cf20f | 6197 | |
25554267 DA |
6198 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, |
6199 | 2, 4, 0, | |
6200 | doc: /* Set the fringe widths of window WINDOW. | |
6201 | WINDOW must be a live window and defaults to the selected one. | |
949cf20f | 6202 | |
25554267 DA |
6203 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for |
6204 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6205 | fringe width. If a fringe width arg is nil, that means to use the | |
6206 | frame's default fringe width. Default fringe widths can be set with | |
6207 | the command `set-fringe-style'. | |
6208 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6209 | outside of the display margins. By default, fringes are drawn between | |
6210 | display marginal areas and the text area. | |
949cf20f | 6211 | |
25554267 DA |
6212 | Return t if any fringe was actually changed and nil otherwise. */) |
6213 | (Lisp_Object window, Lisp_Object left_width, | |
6214 | Lisp_Object right_width, Lisp_Object outside_margins) | |
6215 | { | |
6216 | struct window *w | |
6217 | = set_window_fringes (decode_live_window (window), | |
6218 | left_width, right_width, outside_margins); | |
6219 | return w ? (apply_window_adjustment (w), Qt) : Qnil; | |
949cf20f KS |
6220 | } |
6221 | ||
6222 | ||
6223 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6224 | 0, 1, 0, | |
6225 | doc: /* Get width of fringes of window WINDOW. | |
52162052 MR |
6226 | WINDOW must be a live window and defaults to the selected one. |
6227 | ||
6b61353c | 6228 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
5842a27b | 6229 | (Lisp_Object window) |
949cf20f | 6230 | { |
52162052 | 6231 | struct window *w = decode_live_window (window); |
d46c6df5 | 6232 | |
89bc0592 DA |
6233 | return list3 (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6234 | make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
6235 | WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) ? Qt : Qnil); | |
949cf20f KS |
6236 | } |
6237 | ||
6238 | ||
6239 | \f | |
6240 | /*********************************************************************** | |
6241 | Scroll bars | |
6242 | ***********************************************************************/ | |
6243 | ||
25554267 DA |
6244 | static struct window * |
6245 | set_window_scroll_bars (struct window *w, Lisp_Object width, | |
6246 | Lisp_Object vertical_type, Lisp_Object horizontal_type) | |
949cf20f | 6247 | { |
38a2c910 | 6248 | int iwidth = (NILP (width) ? -1 : (CHECK_NATNUM (width), XINT (width))); |
949cf20f | 6249 | |
38a2c910 DA |
6250 | if (iwidth == 0) |
6251 | vertical_type = Qnil; | |
949cf20f | 6252 | |
413a79ad | 6253 | if (!(NILP (vertical_type) |
0cc1039f | 6254 | || EQ (vertical_type, Qleft) |
6b61353c KH |
6255 | || EQ (vertical_type, Qright) |
6256 | || EQ (vertical_type, Qt))) | |
6257 | error ("Invalid type of vertical scroll bar"); | |
6258 | ||
38a2c910 | 6259 | if (w->scroll_bar_width != iwidth |
d3d50620 | 6260 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) |
949cf20f | 6261 | { |
38a2c910 | 6262 | w->scroll_bar_width = iwidth; |
e8c17b81 | 6263 | wset_vertical_scroll_bar_type (w, vertical_type); |
25554267 DA |
6264 | return w; |
6265 | } | |
6266 | return NULL; | |
6267 | } | |
949cf20f | 6268 | |
25554267 DA |
6269 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, |
6270 | Sset_window_scroll_bars, 2, 4, 0, | |
6271 | doc: /* Set width and type of scroll bars of window WINDOW. | |
6272 | WINDOW must be a live window and defaults to the selected one. | |
949cf20f | 6273 | |
25554267 DA |
6274 | Second parameter WIDTH specifies the pixel width for the scroll bar; |
6275 | this is automatically adjusted to a multiple of the frame column width. | |
6276 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6277 | bar: left, right, or nil. | |
6278 | If WIDTH is nil, use the frame's scroll-bar width. | |
6279 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. | |
6280 | Fourth parameter HORIZONTAL-TYPE is currently unused. | |
949cf20f | 6281 | |
25554267 DA |
6282 | Return t if scroll bars was actually changed and nil otherwise. */) |
6283 | (Lisp_Object window, Lisp_Object width, | |
6284 | Lisp_Object vertical_type, Lisp_Object horizontal_type) | |
6285 | { | |
6286 | struct window *w | |
6287 | = set_window_scroll_bars (decode_live_window (window), | |
6288 | width, vertical_type, horizontal_type); | |
6289 | return w ? (apply_window_adjustment (w), Qt) : Qnil; | |
949cf20f KS |
6290 | } |
6291 | ||
6292 | ||
6293 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6294 | 0, 1, 0, | |
6295 | doc: /* Get width and type of scroll bars of window WINDOW. | |
52162052 MR |
6296 | WINDOW must be a live window and defaults to the selected one. |
6297 | ||
6b61353c KH |
6298 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6299 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6300 | value. */) | |
5842a27b | 6301 | (Lisp_Object window) |
949cf20f | 6302 | { |
52162052 | 6303 | struct window *w = decode_live_window (window); |
89bc0592 DA |
6304 | |
6305 | return list4 (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
949cf20f KS |
6306 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) |
6307 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
89bc0592 DA |
6308 | make_number (WINDOW_SCROLL_BAR_COLS (w)), |
6309 | w->vertical_scroll_bar_type, Qnil); | |
5500c422 GM |
6310 | } |
6311 | ||
6312 | ||
7ab12479 | 6313 | \f |
5500c422 GM |
6314 | /*********************************************************************** |
6315 | Smooth scrolling | |
6316 | ***********************************************************************/ | |
6317 | ||
0cc1039f | 6318 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 | 6319 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
49745b39 | 6320 | If WINDOW is omitted or nil, it defaults to the selected window. |
0cc1039f | 6321 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6322 | optional second arg PIXELS-P means value is measured in pixels. */) |
5842a27b | 6323 | (Lisp_Object window, Lisp_Object pixels_p) |
5500c422 | 6324 | { |
47004952 | 6325 | Lisp_Object result; |
1f76f6f5 MR |
6326 | struct window *w = decode_live_window (window); |
6327 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 6328 | |
5500c422 | 6329 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6330 | result = (NILP (pixels_p) |
6331 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6332 | : make_number (-w->vscroll)); | |
5500c422 | 6333 | else |
47004952 GM |
6334 | result = make_number (0); |
6335 | return result; | |
5500c422 GM |
6336 | } |
6337 | ||
6338 | ||
6339 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6340 | 2, 3, 0, |
fdb82f93 | 6341 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6342 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6343 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6344 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6345 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6346 | corresponds to an integral number of pixels. The return value is the | |
6347 | result of this rounding. | |
6348 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
5842a27b | 6349 | (Lisp_Object window, Lisp_Object vscroll, Lisp_Object pixels_p) |
5500c422 | 6350 | { |
1f76f6f5 MR |
6351 | struct window *w = decode_live_window (window); |
6352 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 6353 | |
b7826503 | 6354 | CHECK_NUMBER_OR_FLOAT (vscroll); |
177c0ea7 | 6355 | |
5500c422 GM |
6356 | if (FRAME_WINDOW_P (f)) |
6357 | { | |
6358 | int old_dy = w->vscroll; | |
177c0ea7 | 6359 | |
0cc1039f KS |
6360 | w->vscroll = - (NILP (pixels_p) |
6361 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6362 | : XFLOATINT (vscroll)); | |
47004952 | 6363 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6364 | |
e56263e5 KS |
6365 | if (w->vscroll != old_dy) |
6366 | { | |
6367 | /* Adjust glyph matrix of the frame if the virtual display | |
6368 | area becomes larger than before. */ | |
6369 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
6370 | adjust_glyphs (f); | |
177c0ea7 | 6371 | |
e56263e5 | 6372 | /* Prevent redisplay shortcuts. */ |
e74aeda8 | 6373 | XBUFFER (w->contents)->prevent_redisplay_optimizations_p = 1; |
e56263e5 | 6374 | } |
5500c422 | 6375 | } |
177c0ea7 | 6376 | |
0cc1039f | 6377 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 6378 | } |
177c0ea7 | 6379 | |
7bbb5782 GM |
6380 | \f |
6381 | /* Call FN for all leaf windows on frame F. FN is called with the | |
6382 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 6383 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 | 6384 | |
2f7c71a1 AS |
6385 | static void |
6386 | foreach_window (struct frame *f, int (*fn) (struct window *, void *), | |
6387 | void *user_data) | |
7bbb5782 | 6388 | { |
56f2de10 | 6389 | /* delete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
76fb556f YM |
6390 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) |
6391 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
6392 | } |
6393 | ||
6394 | ||
6395 | /* Helper function for foreach_window. Call FN for all leaf windows | |
6396 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 6397 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 6398 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 6399 | |
67492200 | 6400 | static int |
971de7fb | 6401 | foreach_window_1 (struct window *w, int (*fn) (struct window *, void *), void *user_data) |
7bbb5782 | 6402 | { |
67492200 | 6403 | int cont; |
177c0ea7 | 6404 | |
67492200 | 6405 | for (cont = 1; w && cont;) |
7bbb5782 | 6406 | { |
e74aeda8 DA |
6407 | if (WINDOWP (w->contents)) |
6408 | cont = foreach_window_1 (XWINDOW (w->contents), fn, user_data); | |
177c0ea7 | 6409 | else |
0f532a9a | 6410 | cont = fn (w, user_data); |
177c0ea7 | 6411 | |
d3d50620 | 6412 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
7bbb5782 | 6413 | } |
67492200 GM |
6414 | |
6415 | return cont; | |
7bbb5782 GM |
6416 | } |
6417 | ||
5500c422 GM |
6418 | /*********************************************************************** |
6419 | Initialization | |
6420 | ***********************************************************************/ | |
6421 | ||
6198ccd0 MR |
6422 | /* Return 1 if window configurations CONFIGURATION1 and CONFIGURATION2 |
6423 | describe the same state of affairs. This is used by Fequal. | |
6424 | ||
f75d7a91 | 6425 | IGNORE_POSITIONS means ignore non-matching scroll positions |
6198ccd0 MR |
6426 | and the like. |
6427 | ||
e4769531 | 6428 | This ignores a couple of things like the dedication status of |
b6f67890 MR |
6429 | window, combination_limit and the like. This might have to be |
6430 | fixed. */ | |
cbff28e8 | 6431 | |
f75d7a91 PE |
6432 | bool |
6433 | compare_window_configurations (Lisp_Object configuration1, | |
6434 | Lisp_Object configuration2, | |
6435 | bool ignore_positions) | |
cbff28e8 RS |
6436 | { |
6437 | register struct save_window_data *d1, *d2; | |
6198ccd0 | 6438 | struct Lisp_Vector *sws1, *sws2; |
71f02bc5 | 6439 | ptrdiff_t i; |
cbff28e8 | 6440 | |
6198ccd0 MR |
6441 | CHECK_WINDOW_CONFIGURATION (configuration1); |
6442 | CHECK_WINDOW_CONFIGURATION (configuration2); | |
6443 | ||
6444 | d1 = (struct save_window_data *) XVECTOR (configuration1); | |
6445 | d2 = (struct save_window_data *) XVECTOR (configuration2); | |
6446 | sws1 = XVECTOR (d1->saved_windows); | |
6447 | sws2 = XVECTOR (d2->saved_windows); | |
6448 | ||
6449 | /* Frame settings must match. */ | |
6450 | if (d1->frame_cols != d2->frame_cols | |
6451 | || d1->frame_lines != d2->frame_lines | |
6452 | || d1->frame_menu_bar_lines != d2->frame_menu_bar_lines | |
6453 | || !EQ (d1->selected_frame, d2->selected_frame) | |
6454 | || !EQ (d1->current_buffer, d2->current_buffer) | |
6455 | || (!ignore_positions | |
6456 | && (!EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window) | |
6457 | || !EQ (d1->minibuf_selected_window, d2->minibuf_selected_window))) | |
6458 | || !EQ (d1->focus_frame, d2->focus_frame) | |
6459 | /* Verify that the two configurations have the same number of windows. */ | |
6460 | || sws1->header.size != sws2->header.size) | |
cbff28e8 | 6461 | return 0; |
cbff28e8 | 6462 | |
6198ccd0 | 6463 | for (i = 0; i < sws1->header.size; i++) |
cbff28e8 | 6464 | { |
6198ccd0 | 6465 | struct saved_window *sw1, *sw2; |
cbff28e8 | 6466 | |
6198ccd0 MR |
6467 | sw1 = SAVED_WINDOW_N (sws1, i); |
6468 | sw2 = SAVED_WINDOW_N (sws2, i); | |
6469 | ||
6470 | if ( | |
6471 | /* The "current" windows in the two configurations must | |
6472 | correspond to each other. */ | |
6473 | EQ (d1->current_window, sw1->window) | |
6474 | != EQ (d2->current_window, sw2->window) | |
6475 | /* Windows' buffers must match. */ | |
6476 | || !EQ (sw1->buffer, sw2->buffer) | |
6477 | || !EQ (sw1->left_col, sw2->left_col) | |
6478 | || !EQ (sw1->top_line, sw2->top_line) | |
6479 | || !EQ (sw1->total_cols, sw2->total_cols) | |
6480 | || !EQ (sw1->total_lines, sw2->total_lines) | |
6481 | || !EQ (sw1->display_table, sw2->display_table) | |
6482 | /* The next two disjuncts check the window structure for | |
6483 | equality. */ | |
6484 | || !EQ (sw1->parent, sw2->parent) | |
6485 | || !EQ (sw1->prev, sw2->prev) | |
6486 | || (!ignore_positions | |
6487 | && (!EQ (sw1->hscroll, sw2->hscroll) | |
6488 | || !EQ (sw1->min_hscroll, sw2->min_hscroll) | |
6489 | || !EQ (sw1->start_at_line_beg, sw2->start_at_line_beg) | |
6490 | || NILP (Fequal (sw1->start, sw2->start)) | |
6491 | || NILP (Fequal (sw1->pointm, sw2->pointm)) | |
6492 | || NILP (Fequal (sw1->mark, sw2->mark)))) | |
6493 | || !EQ (sw1->left_margin_cols, sw2->left_margin_cols) | |
6494 | || !EQ (sw1->right_margin_cols, sw2->right_margin_cols) | |
6495 | || !EQ (sw1->left_fringe_width, sw2->left_fringe_width) | |
6496 | || !EQ (sw1->right_fringe_width, sw2->right_fringe_width) | |
6497 | || !EQ (sw1->fringes_outside_margins, sw2->fringes_outside_margins) | |
6498 | || !EQ (sw1->scroll_bar_width, sw2->scroll_bar_width) | |
6499 | || !EQ (sw1->vertical_scroll_bar_type, sw2->vertical_scroll_bar_type)) | |
949cf20f | 6500 | return 0; |
cbff28e8 RS |
6501 | } |
6502 | ||
6503 | return 1; | |
6504 | } | |
2f8274be RS |
6505 | |
6506 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
6507 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
6508 | doc: /* Compare two window configurations as regards the structure of windows. |
6509 | This function ignores details such as the values of point and mark | |
6510 | and scrolling positions. */) | |
5842a27b | 6511 | (Lisp_Object x, Lisp_Object y) |
2f8274be RS |
6512 | { |
6513 | if (compare_window_configurations (x, y, 1)) | |
6514 | return Qt; | |
6515 | return Qnil; | |
6516 | } | |
cbff28e8 | 6517 | \f |
dfcf069d | 6518 | void |
971de7fb | 6519 | init_window_once (void) |
7ab12479 | 6520 | { |
3224dac1 | 6521 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
6522 | XSETFRAME (selected_frame, f); |
6523 | Vterminal_frame = selected_frame; | |
e69b0960 DA |
6524 | minibuf_window = f->minibuffer_window; |
6525 | selected_window = f->selected_window; | |
1ae1a37d | 6526 | last_nonminibuf_frame = f; |
5b03d3c0 RS |
6527 | |
6528 | window_initialized = 1; | |
7ab12479 JB |
6529 | } |
6530 | ||
67492200 | 6531 | void |
971de7fb | 6532 | init_window (void) |
67492200 GM |
6533 | { |
6534 | Vwindow_list = Qnil; | |
6535 | } | |
6536 | ||
dfcf069d | 6537 | void |
971de7fb | 6538 | syms_of_window (void) |
7ab12479 | 6539 | { |
cd3520a4 JB |
6540 | DEFSYM (Qscroll_up, "scroll-up"); |
6541 | DEFSYM (Qscroll_down, "scroll-down"); | |
6542 | DEFSYM (Qscroll_command, "scroll-command"); | |
a4b000fb JL |
6543 | |
6544 | Fput (Qscroll_up, Qscroll_command, Qt); | |
6545 | Fput (Qscroll_down, Qscroll_command, Qt); | |
6546 | ||
cd3520a4 JB |
6547 | DEFSYM (Qwindow_configuration_change_hook, "window-configuration-change-hook"); |
6548 | DEFSYM (Qwindowp, "windowp"); | |
6549 | DEFSYM (Qwindow_configuration_p, "window-configuration-p"); | |
6550 | DEFSYM (Qwindow_live_p, "window-live-p"); | |
52162052 | 6551 | DEFSYM (Qwindow_valid_p, "window-valid-p"); |
cd3520a4 JB |
6552 | DEFSYM (Qwindow_deletable_p, "window-deletable-p"); |
6553 | DEFSYM (Qdelete_window, "delete-window"); | |
5386012d MR |
6554 | DEFSYM (Qwindow_resize_root_window, "window--resize-root-window"); |
6555 | DEFSYM (Qwindow_resize_root_window_vertically, "window--resize-root-window-vertically"); | |
cd3520a4 JB |
6556 | DEFSYM (Qsafe, "safe"); |
6557 | DEFSYM (Qdisplay_buffer, "display-buffer"); | |
6558 | DEFSYM (Qreplace_buffer_in_windows, "replace-buffer-in-windows"); | |
6559 | DEFSYM (Qrecord_window_buffer, "record-window-buffer"); | |
6560 | DEFSYM (Qget_mru_window, "get-mru-window"); | |
5938d519 | 6561 | DEFSYM (Qwindow_size, "window-size"); |
cd3520a4 JB |
6562 | DEFSYM (Qtemp_buffer_show_hook, "temp-buffer-show-hook"); |
6563 | DEFSYM (Qabove, "above"); | |
6564 | DEFSYM (Qbelow, "below"); | |
6a6ee00d | 6565 | DEFSYM (Qclone_of, "clone-of"); |
b9e809c2 | 6566 | |
67492200 | 6567 | staticpro (&Vwindow_list); |
8bfb170b KS |
6568 | |
6569 | minibuf_selected_window = Qnil; | |
3dbab091 | 6570 | staticpro (&minibuf_selected_window); |
67492200 | 6571 | |
c876b227 | 6572 | window_scroll_pixel_based_preserve_x = -1; |
66fe93d1 | 6573 | window_scroll_pixel_based_preserve_y = -1; |
c876b227 SM |
6574 | window_scroll_preserve_hpos = -1; |
6575 | window_scroll_preserve_vpos = -1; | |
66d43aea | 6576 | |
29208e82 | 6577 | DEFVAR_LISP ("temp-buffer-show-function", Vtemp_buffer_show_function, |
fdb82f93 PJ |
6578 | doc: /* Non-nil means call as function to display a help buffer. |
6579 | The function is called with one argument, the buffer to be displayed. | |
6580 | Used by `with-output-to-temp-buffer'. | |
6581 | If this function is used, then it must do the entire job of showing | |
6582 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 | 6583 | Vtemp_buffer_show_function = Qnil; |
e10ac9f1 | 6584 | |
29208e82 | 6585 | DEFVAR_LISP ("minibuffer-scroll-window", Vminibuf_scroll_window, |
fdb82f93 | 6586 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
6587 | Vminibuf_scroll_window = Qnil; |
6588 | ||
29208e82 | 6589 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", mode_line_in_non_selected_windows, |
26124d5e | 6590 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
6591 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
6592 | is displayed in the `mode-line' face. */); | |
6593 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 6594 | |
29208e82 | 6595 | DEFVAR_LISP ("other-window-scroll-buffer", Vother_window_scroll_buffer, |
fdb82f93 | 6596 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
6597 | Vother_window_scroll_buffer = Qnil; |
6598 | ||
29208e82 | 6599 | DEFVAR_BOOL ("auto-window-vscroll", auto_window_vscroll_p, |
e10ac9f1 | 6600 | doc: /* Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); |
e56263e5 KS |
6601 | auto_window_vscroll_p = 1; |
6602 | ||
29208e82 | 6603 | DEFVAR_INT ("next-screen-context-lines", next_screen_context_lines, |
e10ac9f1 | 6604 | doc: /* Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
6605 | next_screen_context_lines = 2; |
6606 | ||
5500c422 | 6607 | DEFVAR_LISP ("scroll-preserve-screen-position", |
29208e82 | 6608 | Vscroll_preserve_screen_position, |
e10ac9f1 | 6609 | doc: /* Controls if scroll commands move point to keep its screen position unchanged. |
bdf4ec93 RS |
6610 | A value of nil means point does not keep its screen position except |
6611 | at the scroll margin or window boundary respectively. | |
6612 | A value of t means point keeps its screen position if the scroll | |
6613 | command moved it vertically out of the window, e.g. when scrolling | |
6614 | by full screens. | |
9013a7f8 | 6615 | Any other value means point always keeps its screen position. |
a4b000fb JL |
6616 | Scroll commands should have the `scroll-command' property |
6617 | on their symbols to be controlled by this variable. */); | |
5500c422 | 6618 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 6619 | |
29208e82 | 6620 | DEFVAR_LISP ("window-point-insertion-type", Vwindow_point_insertion_type, |
a1562258 SM |
6621 | doc: /* Type of marker to use for `window-point'. */); |
6622 | Vwindow_point_insertion_type = Qnil; | |
6623 | ||
543f5fb1 | 6624 | DEFVAR_LISP ("window-configuration-change-hook", |
29208e82 | 6625 | Vwindow_configuration_change_hook, |
fdb82f93 | 6626 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
6627 | The buffer-local part is run once per window, with the relevant window |
6628 | selected; while the global part is run only once for the modified frame, | |
6629 | with the relevant frame selected. */); | |
543f5fb1 RS |
6630 | Vwindow_configuration_change_hook = Qnil; |
6631 | ||
29208e82 | 6632 | DEFVAR_LISP ("recenter-redisplay", Vrecenter_redisplay, |
61d4b438 MR |
6633 | doc: /* Non-nil means `recenter' redraws entire frame. |
6634 | If this option is non-nil, then the `recenter' command with a nil | |
6635 | argument will redraw the entire frame; the special value `tty' causes | |
6636 | the frame to be redrawn only if it is a tty frame. */); | |
666e158e MB |
6637 | Vrecenter_redisplay = Qtty; |
6638 | ||
a0c2d0ae | 6639 | DEFVAR_LISP ("window-combination-resize", Vwindow_combination_resize, |
454592a6 | 6640 | doc: /* If t, resize window combinations proportionally. |
1a13852e | 6641 | If this variable is nil, splitting a window gets the entire screen space |
a0c2d0ae | 6642 | for displaying the new window from the window to split. Deleting and |
df85d315 | 6643 | resizing a window preferably resizes one adjacent window only. |
a0c2d0ae | 6644 | |
454592a6 | 6645 | If this variable is t, splitting a window tries to get the space |
a0c2d0ae MR |
6646 | proportionally from all windows in the same combination. This also |
6647 | allows to split a window that is otherwise too small or of fixed size. | |
6648 | Resizing and deleting a window proportionally resize all windows in the | |
6649 | same combination. | |
1a13852e | 6650 | |
454592a6 MR |
6651 | Other values are reserved for future use. |
6652 | ||
9fc9a531 AH |
6653 | This variable takes no effect if the variable `window-combination-limit' is |
6654 | non-nil. */); | |
a0c2d0ae | 6655 | Vwindow_combination_resize = Qnil; |
1a13852e | 6656 | |
b6f67890 | 6657 | DEFVAR_LISP ("window-combination-limit", Vwindow_combination_limit, |
8e17c9ba MR |
6658 | doc: /* If non-nil, splitting a window makes a new parent window. |
6659 | The following values are recognized: | |
1a13852e | 6660 | |
8e17c9ba | 6661 | nil means splitting a window will create a new parent window only if the |
5938d519 MR |
6662 | window has no parent window or the window shall become part of a |
6663 | combination orthogonal to the one it is part of. | |
1a13852e | 6664 | |
5938d519 MR |
6665 | `window-size' means that splitting a window for displaying a buffer |
6666 | makes a new parent window provided `display-buffer' is supposed to | |
6667 | explicitly set the window's size due to the presence of a | |
6668 | `window-height' or `window-width' entry in the alist used by | |
6669 | `display-buffer'. Otherwise, this value is handled like nil. | |
8e17c9ba MR |
6670 | |
6671 | `temp-buffer' means that splitting a window for displaying a temporary | |
6672 | buffer always makes a new parent window. Otherwise, this value is | |
6673 | handled like nil. | |
6674 | ||
8e17c9ba MR |
6675 | `display-buffer' means that splitting a window for displaying a buffer |
6676 | always makes a new parent window. Since temporary buffers are | |
6677 | displayed by the function `display-buffer', this value is stronger | |
6678 | than `temp-buffer'. Splitting a window for other purpose makes a | |
6679 | new parent window only if needed. | |
6680 | ||
6681 | t means that splitting a window always creates a new parent window. If | |
6682 | all splits behave this way, each frame's window tree is a binary | |
6683 | tree and every window but the frame's root window has exactly one | |
6684 | sibling. | |
1a13852e | 6685 | |
8e17c9ba | 6686 | Other values are reserved for future use. */); |
5938d519 | 6687 | Vwindow_combination_limit = Qwindow_size; |
666e158e | 6688 | |
6a6ee00d MR |
6689 | DEFVAR_LISP ("window-persistent-parameters", Vwindow_persistent_parameters, |
6690 | doc: /* Alist of persistent window parameters. | |
34a02f46 MR |
6691 | This alist specifies which window parameters shall get saved by |
6692 | `current-window-configuration' and `window-state-get' and subsequently | |
6693 | restored to their previous values by `set-window-configuration' and | |
6694 | `window-state-put'. | |
6a6ee00d MR |
6695 | |
6696 | The car of each entry of this alist is the symbol specifying the | |
6697 | parameter. The cdr is one of the following: | |
6698 | ||
34a02f46 MR |
6699 | nil means the parameter is neither saved by `window-state-get' nor by |
6700 | `current-window-configuration'. | |
6a6ee00d | 6701 | |
34a02f46 MR |
6702 | t means the parameter is saved by `current-window-configuration' and, |
6703 | provided its WRITABLE argument is nil, by `window-state-get'. | |
6a6ee00d | 6704 | |
34a02f46 MR |
6705 | The symbol `writable' means the parameter is saved unconditionally by |
6706 | both `current-window-configuration' and `window-state-get'. Do not use | |
6707 | this value for parameters without read syntax (like windows or frames). | |
6a6ee00d MR |
6708 | |
6709 | Parameters not saved by `current-window-configuration' or | |
6710 | `window-state-get' are left alone by `set-window-configuration' | |
6711 | respectively are not installed by `window-state-put'. */); | |
34a02f46 | 6712 | Vwindow_persistent_parameters = list1 (Fcons (Qclone_of, Qt)); |
6a6ee00d | 6713 | |
7ab12479 JB |
6714 | defsubr (&Sselected_window); |
6715 | defsubr (&Sminibuffer_window); | |
6716 | defsubr (&Swindow_minibuffer_p); | |
6717 | defsubr (&Swindowp); | |
52162052 | 6718 | defsubr (&Swindow_valid_p); |
806b4d9b | 6719 | defsubr (&Swindow_live_p); |
727e958e MR |
6720 | defsubr (&Swindow_frame); |
6721 | defsubr (&Sframe_root_window); | |
6722 | defsubr (&Sframe_first_window); | |
6723 | defsubr (&Sframe_selected_window); | |
6724 | defsubr (&Sset_frame_selected_window); | |
7ab12479 | 6725 | defsubr (&Spos_visible_in_window_p); |
536833ab | 6726 | defsubr (&Swindow_line_height); |
7ab12479 | 6727 | defsubr (&Swindow_buffer); |
bf60a96b | 6728 | defsubr (&Swindow_parent); |
d68443dc MR |
6729 | defsubr (&Swindow_top_child); |
6730 | defsubr (&Swindow_left_child); | |
6731 | defsubr (&Swindow_next_sibling); | |
6732 | defsubr (&Swindow_prev_sibling); | |
b6f67890 MR |
6733 | defsubr (&Swindow_combination_limit); |
6734 | defsubr (&Sset_window_combination_limit); | |
abde8f8c MR |
6735 | defsubr (&Swindow_use_time); |
6736 | defsubr (&Swindow_top_line); | |
6737 | defsubr (&Swindow_left_column); | |
105216ed CY |
6738 | defsubr (&Swindow_total_height); |
6739 | defsubr (&Swindow_total_width); | |
496e208e MR |
6740 | defsubr (&Swindow_normal_size); |
6741 | defsubr (&Swindow_new_total); | |
6742 | defsubr (&Swindow_new_normal); | |
6743 | defsubr (&Sset_window_new_total); | |
6744 | defsubr (&Sset_window_new_normal); | |
d615d6d2 | 6745 | defsubr (&Swindow_resize_apply); |
105216ed CY |
6746 | defsubr (&Swindow_body_height); |
6747 | defsubr (&Swindow_body_width); | |
7ab12479 JB |
6748 | defsubr (&Swindow_hscroll); |
6749 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
6750 | defsubr (&Swindow_redisplay_end_trigger); |
6751 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 6752 | defsubr (&Swindow_edges); |
c99a9eb3 | 6753 | defsubr (&Swindow_pixel_edges); |
9d5405ec | 6754 | defsubr (&Swindow_absolute_pixel_edges); |
c99a9eb3 RS |
6755 | defsubr (&Swindow_inside_edges); |
6756 | defsubr (&Swindow_inside_pixel_edges); | |
9d5405ec | 6757 | defsubr (&Swindow_inside_absolute_pixel_edges); |
d5783c40 JB |
6758 | defsubr (&Scoordinates_in_window_p); |
6759 | defsubr (&Swindow_at); | |
7ab12479 JB |
6760 | defsubr (&Swindow_point); |
6761 | defsubr (&Swindow_start); | |
6762 | defsubr (&Swindow_end); | |
6763 | defsubr (&Sset_window_point); | |
6764 | defsubr (&Sset_window_start); | |
6765 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 6766 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
6767 | defsubr (&Swindow_display_table); |
6768 | defsubr (&Sset_window_display_table); | |
6769 | defsubr (&Snext_window); | |
6770 | defsubr (&Sprevious_window); | |
7ab12479 | 6771 | defsubr (&Sget_buffer_window); |
1a13852e MR |
6772 | defsubr (&Sdelete_other_windows_internal); |
6773 | defsubr (&Sdelete_window_internal); | |
6774 | defsubr (&Sresize_mini_window_internal); | |
7ab12479 | 6775 | defsubr (&Sset_window_buffer); |
1a13852e | 6776 | defsubr (&Srun_window_configuration_change_hook); |
7ab12479 | 6777 | defsubr (&Sselect_window); |
6b61353c | 6778 | defsubr (&Sforce_window_update); |
1a13852e | 6779 | defsubr (&Ssplit_window_internal); |
7ab12479 JB |
6780 | defsubr (&Sscroll_up); |
6781 | defsubr (&Sscroll_down); | |
6782 | defsubr (&Sscroll_left); | |
6783 | defsubr (&Sscroll_right); | |
ccd0664b | 6784 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 6785 | defsubr (&Sscroll_other_window); |
fa832261 | 6786 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 6787 | defsubr (&Srecenter); |
81fe0836 | 6788 | defsubr (&Swindow_text_height); |
7ab12479 JB |
6789 | defsubr (&Smove_to_window_line); |
6790 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 6791 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
6792 | defsubr (&Sset_window_configuration); |
6793 | defsubr (&Scurrent_window_configuration); | |
5500c422 GM |
6794 | defsubr (&Sset_window_margins); |
6795 | defsubr (&Swindow_margins); | |
949cf20f KS |
6796 | defsubr (&Sset_window_fringes); |
6797 | defsubr (&Swindow_fringes); | |
6798 | defsubr (&Sset_window_scroll_bars); | |
6799 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
6800 | defsubr (&Swindow_vscroll); |
6801 | defsubr (&Sset_window_vscroll); | |
2f8274be | 6802 | defsubr (&Scompare_window_configurations); |
67492200 | 6803 | defsubr (&Swindow_list); |
abde8f8c | 6804 | defsubr (&Swindow_list_1); |
496e208e MR |
6805 | defsubr (&Swindow_prev_buffers); |
6806 | defsubr (&Sset_window_prev_buffers); | |
6807 | defsubr (&Swindow_next_buffers); | |
6808 | defsubr (&Sset_window_next_buffers); | |
cfbb2395 JB |
6809 | defsubr (&Swindow_parameters); |
6810 | defsubr (&Swindow_parameter); | |
6811 | defsubr (&Sset_window_parameter); | |
7ab12479 JB |
6812 | } |
6813 | ||
dfcf069d | 6814 | void |
971de7fb | 6815 | keys_of_window (void) |
7ab12479 | 6816 | { |
7ab12479 JB |
6817 | initial_define_key (control_x_map, '<', "scroll-left"); |
6818 | initial_define_key (control_x_map, '>', "scroll-right"); | |
6819 | ||
32129746 | 6820 | initial_define_key (global_map, Ctl ('V'), "scroll-up-command"); |
7ab12479 | 6821 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); |
32129746 | 6822 | initial_define_key (meta_map, 'v', "scroll-down-command"); |
7ab12479 | 6823 | } |