Commit | Line | Data |
---|---|---|
7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
acaf905b | 3 | Copyright (C) 1985-1987, 1993-1998, 2000-2012 |
8cabe764 | 4 | Free Software Foundation, Inc. |
7ab12479 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
7ab12479 | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
7ab12479 JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
7ab12479 | 20 | |
18160b98 | 21 | #include <config.h> |
4d553a13 | 22 | #include <stdio.h> |
d7306fe6 | 23 | #include <setjmp.h> |
4d553a13 | 24 | |
7ab12479 | 25 | #include "lisp.h" |
e5560ff7 | 26 | #include "character.h" |
7ab12479 | 27 | #include "buffer.h" |
3e4731a3 | 28 | #include "keyboard.h" |
e35f6ff7 | 29 | #include "keymap.h" |
44fa5b1e | 30 | #include "frame.h" |
7ab12479 JB |
31 | #include "window.h" |
32 | #include "commands.h" | |
33 | #include "indent.h" | |
34 | #include "termchar.h" | |
35 | #include "disptab.h" | |
dfcf069d | 36 | #include "dispextern.h" |
5500c422 GM |
37 | #include "blockinput.h" |
38 | #include "intervals.h" | |
de509a60 | 39 | #include "termhooks.h" /* For FRAME_TERMINAL. */ |
5500c422 | 40 | |
6d55d620 | 41 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 42 | #include "xterm.h" |
5500c422 | 43 | #endif /* HAVE_X_WINDOWS */ |
8f23f280 AI |
44 | #ifdef WINDOWSNT |
45 | #include "w32term.h" | |
46 | #endif | |
1e3c8885 EZ |
47 | #ifdef MSDOS |
48 | #include "msdos.h" | |
49 | #endif | |
edfda783 AR |
50 | #ifdef HAVE_NS |
51 | #include "nsterm.h" | |
52 | #endif | |
5500c422 | 53 | |
9397e56f | 54 | Lisp_Object Qwindowp, Qwindow_live_p; |
b9e809c2 | 55 | static Lisp_Object Qwindow_configuration_p, Qrecord_window_buffer; |
9397e56f | 56 | static Lisp_Object Qwindow_deletable_p, Qdelete_window, Qdisplay_buffer; |
b9e809c2 | 57 | static Lisp_Object Qreplace_buffer_in_windows, Qget_mru_window; |
5386012d | 58 | static Lisp_Object Qwindow_resize_root_window, Qwindow_resize_root_window_vertically; |
955cbe7b | 59 | static Lisp_Object Qscroll_up, Qscroll_down, Qscroll_command; |
b9e809c2 | 60 | static Lisp_Object Qsafe, Qabove, Qbelow; |
34a02f46 | 61 | static Lisp_Object Qauto_buffer_name, Qclone_of; |
b9e809c2 | 62 | |
f57e2426 J |
63 | static int displayed_window_lines (struct window *); |
64 | static struct window *decode_window (Lisp_Object); | |
65 | static int count_windows (struct window *); | |
66 | static int get_leaf_windows (struct window *, struct window **, int); | |
d311d28c | 67 | static void window_scroll (Lisp_Object, EMACS_INT, int, int); |
f57e2426 J |
68 | static void window_scroll_pixel_based (Lisp_Object, int, int, int); |
69 | static void window_scroll_line_based (Lisp_Object, int, int, int); | |
f57e2426 | 70 | static int freeze_window_start (struct window *, void *); |
f57e2426 J |
71 | static Lisp_Object window_list (void); |
72 | static int add_window_to_list (struct window *, void *); | |
73 | static int candidate_window_p (Lisp_Object, Lisp_Object, Lisp_Object, | |
74 | Lisp_Object); | |
75 | static Lisp_Object next_window (Lisp_Object, Lisp_Object, | |
76 | Lisp_Object, int); | |
77 | static void decode_next_window_args (Lisp_Object *, Lisp_Object *, | |
78 | Lisp_Object *); | |
2f7c71a1 | 79 | static void foreach_window (struct frame *, |
f95464e4 | 80 | int (* fn) (struct window *, void *), |
2f7c71a1 | 81 | void *); |
f57e2426 J |
82 | static int foreach_window_1 (struct window *, |
83 | int (* fn) (struct window *, void *), | |
84 | void *); | |
85 | static Lisp_Object window_list_1 (Lisp_Object, Lisp_Object, Lisp_Object); | |
d615d6d2 MR |
86 | static int window_resize_check (struct window *, int); |
87 | static void window_resize_apply (struct window *, int); | |
7c82f3e2 | 88 | static Lisp_Object select_window (Lisp_Object, Lisp_Object, int); |
b7354ddf | 89 | |
7ab12479 JB |
90 | /* This is the window in which the terminal's cursor should |
91 | be left when nothing is being done with it. This must | |
92 | always be a leaf window, and its buffer is selected by | |
93 | the top level editing loop at the end of each command. | |
94 | ||
95 | This value is always the same as | |
44fa5b1e | 96 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
97 | Lisp_Object selected_window; |
98 | ||
67492200 GM |
99 | /* A list of all windows for use by next_window and Fwindow_list. |
100 | Functions creating or deleting windows should invalidate this cache | |
101 | by setting it to nil. */ | |
67492200 GM |
102 | Lisp_Object Vwindow_list; |
103 | ||
5500c422 GM |
104 | /* The mini-buffer window of the selected frame. |
105 | Note that you cannot test for mini-bufferness of an arbitrary window | |
106 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 JB |
107 | the selected window. */ |
108 | Lisp_Object minibuf_window; | |
109 | ||
3f49fddc KS |
110 | /* Non-nil means it is the window whose mode line should be |
111 | shown as the selected window when the minibuffer is selected. */ | |
3dbab091 | 112 | Lisp_Object minibuf_selected_window; |
3f49fddc | 113 | |
a58ec57d | 114 | /* Hook run at end of temp_output_buffer_show. */ |
955cbe7b | 115 | static Lisp_Object Qtemp_buffer_show_hook; |
a58ec57d | 116 | |
7ab12479 JB |
117 | /* Incremented for each window created. */ |
118 | static int sequence_number; | |
119 | ||
5b03d3c0 RS |
120 | /* Nonzero after init_window_once has finished. */ |
121 | static int window_initialized; | |
122 | ||
543f5fb1 | 123 | /* Hook to run when window config changes. */ |
eeca6f6f | 124 | static Lisp_Object Qwindow_configuration_change_hook; |
0d384044 | 125 | |
66d43aea | 126 | /* Used by the function window_scroll_pixel_based */ |
c876b227 | 127 | static int window_scroll_pixel_based_preserve_x; |
66fe93d1 | 128 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 129 | |
c876b227 | 130 | /* Same for window_scroll_line_based. */ |
d311d28c PE |
131 | static EMACS_INT window_scroll_preserve_hpos; |
132 | static EMACS_INT window_scroll_preserve_vpos; | |
f230ecc9 MR |
133 | \f |
134 | static struct window * | |
135 | decode_window (register Lisp_Object window) | |
136 | { | |
137 | if (NILP (window)) | |
138 | return XWINDOW (selected_window); | |
c876b227 | 139 | |
f230ecc9 MR |
140 | CHECK_LIVE_WINDOW (window); |
141 | return XWINDOW (window); | |
142 | } | |
143 | ||
144 | static struct window * | |
145 | decode_any_window (register Lisp_Object window) | |
146 | { | |
6e5d1c12 CY |
147 | struct window *w; |
148 | ||
f230ecc9 MR |
149 | if (NILP (window)) |
150 | return XWINDOW (selected_window); | |
151 | ||
152 | CHECK_WINDOW (window); | |
6e5d1c12 | 153 | w = XWINDOW (window); |
6e5d1c12 | 154 | return w; |
f230ecc9 | 155 | } |
666e158e | 156 | |
7ab12479 | 157 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, |
f230ecc9 | 158 | doc: /* Return t if OBJECT is a window and nil otherwise. */) |
5842a27b | 159 | (Lisp_Object object) |
7ab12479 | 160 | { |
413430c5 | 161 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
162 | } |
163 | ||
806b4d9b | 164 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
f230ecc9 | 165 | doc: /* Return t if OBJECT is a live window and nil otherwise. |
49745b39 CY |
166 | A live window is a window that displays a buffer. |
167 | Internal windows and deleted windows are not live. */) | |
5842a27b | 168 | (Lisp_Object object) |
605be8af | 169 | { |
9e571f49 | 170 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af | 171 | } |
727e958e MR |
172 | \f |
173 | /* Frames and windows. */ | |
174 | DEFUN ("window-frame", Fwindow_frame, Swindow_frame, 1, 1, 0, | |
175 | doc: /* Return the frame that window WINDOW is on. | |
49745b39 | 176 | If WINDOW is omitted or nil, it defaults to the selected window. */) |
727e958e MR |
177 | (Lisp_Object window) |
178 | { | |
d3d50620 | 179 | return decode_any_window (window)->frame; |
727e958e MR |
180 | } |
181 | ||
182 | DEFUN ("frame-root-window", Fframe_root_window, Sframe_root_window, 0, 1, 0, | |
87e68db4 JB |
183 | doc: /* Return the root window of FRAME-OR-WINDOW. |
184 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
49745b39 CY |
185 | With a frame argument, return that frame's root window. |
186 | With a window argument, return the root window of that window's frame. */) | |
727e958e MR |
187 | (Lisp_Object frame_or_window) |
188 | { | |
189 | Lisp_Object window; | |
190 | ||
191 | if (NILP (frame_or_window)) | |
e69b0960 | 192 | window = SELECTED_FRAME ()->root_window; |
727e958e | 193 | else if (WINDOWP (frame_or_window)) |
e69b0960 | 194 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window; |
727e958e MR |
195 | else |
196 | { | |
197 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 198 | window = XFRAME (frame_or_window)->root_window; |
727e958e MR |
199 | } |
200 | ||
201 | return window; | |
202 | } | |
203 | ||
204 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, | |
49745b39 CY |
205 | doc: /* Return the minibuffer window for frame FRAME. |
206 | If FRAME is omitted or nil, it defaults to the selected frame. */) | |
727e958e MR |
207 | (Lisp_Object frame) |
208 | { | |
209 | if (NILP (frame)) | |
210 | frame = selected_frame; | |
211 | CHECK_LIVE_FRAME (frame); | |
212 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); | |
213 | } | |
214 | ||
215 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, | |
216 | Swindow_minibuffer_p, 0, 1, 0, | |
217 | doc: /* Return non-nil if WINDOW is a minibuffer window. | |
49745b39 | 218 | If WINDOW is omitted or nil, it defaults to the selected window. */) |
727e958e MR |
219 | (Lisp_Object window) |
220 | { | |
221 | return MINI_WINDOW_P (decode_any_window (window)) ? Qt : Qnil; | |
222 | } | |
223 | ||
224 | /* Don't move this to window.el - this must be a safe routine. */ | |
225 | DEFUN ("frame-first-window", Fframe_first_window, Sframe_first_window, 0, 1, 0, | |
87e68db4 JB |
226 | doc: /* Return the topmost, leftmost live window on FRAME-OR-WINDOW. |
227 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
228 | Else if FRAME-OR-WINDOW denotes any window, return the first window of | |
229 | that window's frame. If FRAME-OR-WINDOW denotes a live frame, return | |
727e958e MR |
230 | the first window of that frame. */) |
231 | (Lisp_Object frame_or_window) | |
232 | { | |
233 | Lisp_Object window; | |
234 | ||
235 | if (NILP (frame_or_window)) | |
e69b0960 | 236 | window = SELECTED_FRAME ()->root_window; |
727e958e | 237 | else if (WINDOWP (frame_or_window)) |
e69b0960 | 238 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window; |
727e958e MR |
239 | else |
240 | { | |
241 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 242 | window = XFRAME (frame_or_window)->root_window; |
727e958e MR |
243 | } |
244 | ||
d3d50620 | 245 | while (NILP (XWINDOW (window)->buffer)) |
727e958e | 246 | { |
d3d50620 DA |
247 | if (! NILP (XWINDOW (window)->hchild)) |
248 | window = XWINDOW (window)->hchild; | |
249 | else if (! NILP (XWINDOW (window)->vchild)) | |
250 | window = XWINDOW (window)->vchild; | |
727e958e MR |
251 | else |
252 | abort (); | |
253 | } | |
254 | ||
255 | return window; | |
256 | } | |
257 | ||
258 | DEFUN ("frame-selected-window", Fframe_selected_window, | |
259 | Sframe_selected_window, 0, 1, 0, | |
87e68db4 JB |
260 | doc: /* Return the selected window of FRAME-OR-WINDOW. |
261 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
262 | Else if FRAME-OR-WINDOW denotes any window, return the selected window | |
263 | of that window's frame. If FRAME-OR-WINDOW denotes a live frame, return | |
727e958e MR |
264 | the selected window of that frame. */) |
265 | (Lisp_Object frame_or_window) | |
266 | { | |
267 | Lisp_Object window; | |
268 | ||
269 | if (NILP (frame_or_window)) | |
e69b0960 | 270 | window = SELECTED_FRAME ()->selected_window; |
727e958e | 271 | else if (WINDOWP (frame_or_window)) |
e69b0960 | 272 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->selected_window; |
727e958e MR |
273 | else |
274 | { | |
275 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 276 | window = XFRAME (frame_or_window)->selected_window; |
727e958e MR |
277 | } |
278 | ||
279 | return window; | |
280 | } | |
281 | ||
282 | DEFUN ("set-frame-selected-window", Fset_frame_selected_window, | |
283 | Sset_frame_selected_window, 2, 3, 0, | |
284 | doc: /* Set selected window of FRAME to WINDOW. | |
285 | FRAME must be a live frame and defaults to the selected one. If FRAME | |
286 | is the selected frame, this makes WINDOW the selected window. Optional | |
287 | argument NORECORD non-nil means to neither change the order of recently | |
288 | selected windows nor the buffer list. WINDOW must denote a live window. | |
289 | Return WINDOW. */) | |
290 | (Lisp_Object frame, Lisp_Object window, Lisp_Object norecord) | |
291 | { | |
292 | if (NILP (frame)) | |
293 | frame = selected_frame; | |
294 | ||
295 | CHECK_LIVE_FRAME (frame); | |
296 | CHECK_LIVE_WINDOW (window); | |
297 | ||
298 | if (! EQ (frame, WINDOW_FRAME (XWINDOW (window)))) | |
299 | error ("In `set-frame-selected-window', WINDOW is not on FRAME"); | |
300 | ||
301 | if (EQ (frame, selected_frame)) | |
302 | return Fselect_window (window, norecord); | |
303 | else | |
edd74c35 | 304 | return FSET (XFRAME (frame), selected_window, window); |
727e958e MR |
305 | } |
306 | ||
307 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
308 | doc: /* Return the selected window. | |
309 | The selected window is the window in which the standard cursor for | |
310 | selected windows appears and to which many commands apply. */) | |
311 | (void) | |
312 | { | |
313 | return selected_window; | |
314 | } | |
315 | ||
9397e56f MR |
316 | int window_select_count; |
317 | ||
727e958e MR |
318 | /* If select_window is called with inhibit_point_swap non-zero it will |
319 | not store point of the old selected window's buffer back into that | |
320 | window's pointm slot. This is needed by Fset_window_configuration to | |
321 | avoid that the display routine is called with selected_window set to | |
322 | Qnil causing a subsequent crash. */ | |
323 | static Lisp_Object | |
324 | select_window (Lisp_Object window, Lisp_Object norecord, int inhibit_point_swap) | |
325 | { | |
326 | register struct window *w; | |
327 | register struct window *ow; | |
328 | struct frame *sf; | |
329 | ||
330 | CHECK_LIVE_WINDOW (window); | |
331 | ||
332 | w = XWINDOW (window); | |
333 | w->frozen_window_start_p = 0; | |
334 | ||
335 | if (NILP (norecord)) | |
336 | { | |
45942c7d | 337 | w->use_time = ++window_select_count; |
d3d50620 | 338 | record_buffer (w->buffer); |
727e958e MR |
339 | } |
340 | ||
341 | if (EQ (window, selected_window) && !inhibit_point_swap) | |
342 | return window; | |
343 | ||
344 | sf = SELECTED_FRAME (); | |
345 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
346 | { | |
edd74c35 | 347 | FSET (XFRAME (WINDOW_FRAME (w)), selected_window, window); |
727e958e MR |
348 | /* Use this rather than Fhandle_switch_frame |
349 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
350 | move around in the state where a minibuffer in a separate | |
351 | frame is active. */ | |
352 | Fselect_frame (WINDOW_FRAME (w), norecord); | |
353 | /* Fselect_frame called us back so we've done all the work already. */ | |
354 | eassert (EQ (window, selected_window)); | |
355 | return window; | |
356 | } | |
357 | else | |
edd74c35 | 358 | FSET (sf, selected_window, window); |
727e958e MR |
359 | |
360 | /* Store the current buffer's actual point into the | |
361 | old selected window. It belongs to that window, | |
362 | and when the window is not selected, must be in the window. */ | |
363 | if (!inhibit_point_swap) | |
364 | { | |
365 | ow = XWINDOW (selected_window); | |
d3d50620 DA |
366 | if (! NILP (ow->buffer)) |
367 | set_marker_both (ow->pointm, ow->buffer, | |
368 | BUF_PT (XBUFFER (ow->buffer)), | |
369 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
727e958e MR |
370 | } |
371 | ||
372 | selected_window = window; | |
373 | ||
d3d50620 | 374 | Fset_buffer (w->buffer); |
727e958e | 375 | |
4c31be61 | 376 | BSET (XBUFFER (w->buffer), last_selected_window, window); |
727e958e MR |
377 | |
378 | /* Go to the point recorded in the window. | |
379 | This is important when the buffer is in more | |
380 | than one window. It also matters when | |
381 | redisplay_window has altered point after scrolling, | |
382 | because it makes the change only in the window. */ | |
383 | { | |
d3d50620 | 384 | register ptrdiff_t new_point = marker_position (w->pointm); |
727e958e MR |
385 | if (new_point < BEGV) |
386 | SET_PT (BEGV); | |
387 | else if (new_point > ZV) | |
388 | SET_PT (ZV); | |
389 | else | |
390 | SET_PT (new_point); | |
391 | } | |
392 | ||
393 | windows_or_buffers_changed++; | |
394 | return window; | |
395 | } | |
396 | ||
397 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, | |
398 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. | |
399 | Also make WINDOW's buffer current and make WINDOW the frame's selected | |
400 | window. Return WINDOW. | |
401 | ||
402 | Optional second arg NORECORD non-nil means do not put this buffer at the | |
403 | front of the buffer list and do not make this window the most recently | |
404 | selected one. | |
605be8af | 405 | |
727e958e MR |
406 | Note that the main editor command loop sets the current buffer to the |
407 | buffer of the selected window before each command. */) | |
408 | (register Lisp_Object window, Lisp_Object norecord) | |
409 | { | |
410 | return select_window (window, norecord, 0); | |
411 | } | |
412 | \f | |
bf60a96b | 413 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
49745b39 CY |
414 | doc: /* Return the buffer displayed in window WINDOW. |
415 | If WINDOW is omitted or nil, it defaults to the selected window. | |
416 | Return nil for an internal window or a deleted window. */) | |
bf60a96b MR |
417 | (Lisp_Object window) |
418 | { | |
d3d50620 | 419 | return decode_any_window (window)->buffer; |
bf60a96b MR |
420 | } |
421 | ||
422 | DEFUN ("window-parent", Fwindow_parent, Swindow_parent, 0, 1, 0, | |
49745b39 CY |
423 | doc: /* Return the parent window of window WINDOW. |
424 | If WINDOW is omitted or nil, it defaults to the selected window. | |
425 | Return nil for a window with no parent (e.g. a root window). */) | |
bf60a96b MR |
426 | (Lisp_Object window) |
427 | { | |
d3d50620 | 428 | return decode_any_window (window)->parent; |
bf60a96b MR |
429 | } |
430 | ||
49745b39 CY |
431 | DEFUN ("window-top-child", Fwindow_top_child, Swindow_top_child, 1, 1, 0, |
432 | doc: /* Return the topmost child window of window WINDOW. | |
433 | Return nil if WINDOW is a live window (live windows have no children). | |
434 | Return nil if WINDOW is an internal window whose children form a | |
435 | horizontal combination. */) | |
bf60a96b MR |
436 | (Lisp_Object window) |
437 | { | |
49745b39 | 438 | CHECK_WINDOW (window); |
d3d50620 | 439 | return decode_any_window (window)->vchild; |
bf60a96b MR |
440 | } |
441 | ||
49745b39 CY |
442 | DEFUN ("window-left-child", Fwindow_left_child, Swindow_left_child, 1, 1, 0, |
443 | doc: /* Return the leftmost child window of window WINDOW. | |
444 | Return nil if WINDOW is a live window (live windows have no children). | |
445 | Return nil if WINDOW is an internal window whose children form a | |
446 | vertical combination. */) | |
bf60a96b MR |
447 | (Lisp_Object window) |
448 | { | |
49745b39 | 449 | CHECK_WINDOW (window); |
d3d50620 | 450 | return decode_any_window (window)->hchild; |
bf60a96b MR |
451 | } |
452 | ||
d68443dc | 453 | DEFUN ("window-next-sibling", Fwindow_next_sibling, Swindow_next_sibling, 0, 1, 0, |
49745b39 CY |
454 | doc: /* Return the next sibling window of window WINDOW. |
455 | If WINDOW is omitted or nil, it defaults to the selected window. | |
d68443dc | 456 | Return nil if WINDOW has no next sibling. */) |
bf60a96b MR |
457 | (Lisp_Object window) |
458 | { | |
d3d50620 | 459 | return decode_any_window (window)->next; |
bf60a96b MR |
460 | } |
461 | ||
d68443dc | 462 | DEFUN ("window-prev-sibling", Fwindow_prev_sibling, Swindow_prev_sibling, 0, 1, 0, |
49745b39 CY |
463 | doc: /* Return the previous sibling window of window WINDOW. |
464 | If WINDOW is omitted or nil, it defaults to the selected window. | |
d68443dc | 465 | Return nil if WINDOW has no previous sibling. */) |
bf60a96b MR |
466 | (Lisp_Object window) |
467 | { | |
d3d50620 | 468 | return decode_any_window (window)->prev; |
bf60a96b | 469 | } |
67492200 | 470 | |
df05a53c | 471 | DEFUN ("window-combination-limit", Fwindow_combination_limit, Swindow_combination_limit, 1, 1, 0, |
b6f67890 | 472 | doc: /* Return combination limit of window WINDOW. |
be7f5545 | 473 | If the return value is nil, child windows of WINDOW can be recombined with |
b6f67890 | 474 | WINDOW's siblings. A return value of t means that child windows of |
496e208e | 475 | WINDOW are never \(re-)combined with WINDOW's siblings. */) |
496e208e | 476 | (Lisp_Object window) |
7ab12479 | 477 | { |
d3d50620 | 478 | return decode_any_window (window)->combination_limit; |
7ab12479 | 479 | } |
53bb6b99 | 480 | |
b6f67890 | 481 | DEFUN ("set-window-combination-limit", Fset_window_combination_limit, Sset_window_combination_limit, 2, 2, 0, |
d2999b1a MR |
482 | doc: /* Set combination limit of window WINDOW to LIMIT; return LIMIT. |
483 | If LIMIT is nil, child windows of WINDOW can be recombined with | |
484 | WINDOW's siblings. LIMIT t means that child windows of WINDOW are | |
b6f67890 MR |
485 | never \(re-)combined with WINDOW's siblings. Other values are reserved |
486 | for future use. */) | |
d2999b1a | 487 | (Lisp_Object window, Lisp_Object limit) |
b3a10345 | 488 | { |
077288cf | 489 | return WSET (decode_any_window (window), combination_limit, limit); |
496e208e | 490 | } |
7bbc67d2 | 491 | |
496e208e | 492 | DEFUN ("window-use-time", Fwindow_use_time, Swindow_use_time, 0, 1, 0, |
49745b39 CY |
493 | doc: /* Return the use time of window WINDOW. |
494 | If WINDOW is omitted or nil, it defaults to the selected window. | |
495 | The window with the highest use time is the most recently selected | |
496 | one. The window with the lowest use time is the least recently | |
497 | selected one. */) | |
496e208e MR |
498 | (Lisp_Object window) |
499 | { | |
45942c7d | 500 | return make_number (decode_window (window)->use_time); |
496e208e | 501 | } |
abde8f8c | 502 | \f |
105216ed CY |
503 | DEFUN ("window-total-height", Fwindow_total_height, Swindow_total_height, 0, 1, 0, |
504 | doc: /* Return the total height, in lines, of window WINDOW. | |
49745b39 | 505 | If WINDOW is omitted or nil, it defaults to the selected window. |
b3a10345 | 506 | |
105216ed CY |
507 | The return value includes the mode line and header line, if any. |
508 | If WINDOW is an internal window, the total height is the height | |
509 | of the screen areas spanned by its children. | |
536833ab | 510 | |
105216ed CY |
511 | On a graphical display, this total height is reported as an |
512 | integer multiple of the default character height. */) | |
513 | (Lisp_Object window) | |
496e208e | 514 | { |
d3d50620 | 515 | return decode_any_window (window)->total_lines; |
105216ed | 516 | } |
536833ab | 517 | |
105216ed CY |
518 | DEFUN ("window-total-width", Fwindow_total_width, Swindow_total_width, 0, 1, 0, |
519 | doc: /* Return the total width, in columns, of window WINDOW. | |
520 | If WINDOW is omitted or nil, it defaults to the selected window. | |
b3a10345 | 521 | |
105216ed CY |
522 | The return value includes any vertical dividers or scroll bars |
523 | belonging to WINDOW. If WINDOW is an internal window, the total width | |
524 | is the width of the screen areas spanned by its children. | |
b3a10345 | 525 | |
105216ed CY |
526 | On a graphical display, this total width is reported as an |
527 | integer multiple of the default character width. */) | |
496e208e MR |
528 | (Lisp_Object window) |
529 | { | |
d3d50620 | 530 | return decode_any_window (window)->total_cols; |
abde8f8c | 531 | } |
b3a10345 | 532 | |
496e208e | 533 | DEFUN ("window-new-total", Fwindow_new_total, Swindow_new_total, 0, 1, 0, |
49745b39 CY |
534 | doc: /* Return the new total size of window WINDOW. |
535 | If WINDOW is omitted or nil, it defaults to the selected window. */) | |
496e208e MR |
536 | (Lisp_Object window) |
537 | { | |
d3d50620 | 538 | return decode_any_window (window)->new_total; |
496e208e MR |
539 | } |
540 | ||
541 | DEFUN ("window-normal-size", Fwindow_normal_size, Swindow_normal_size, 0, 2, 0, | |
49745b39 CY |
542 | doc: /* Return the normal height of window WINDOW. |
543 | If WINDOW is omitted or nil, it defaults to the selected window. | |
544 | If HORIZONTAL is non-nil, return the normal width of WINDOW. */) | |
496e208e MR |
545 | (Lisp_Object window, Lisp_Object horizontal) |
546 | { | |
d3d50620 DA |
547 | struct window *w = decode_any_window (window); |
548 | ||
549 | return NILP (horizontal) ? w->normal_lines : w->normal_cols; | |
496e208e MR |
550 | } |
551 | ||
552 | DEFUN ("window-new-normal", Fwindow_new_normal, Swindow_new_normal, 0, 1, 0, | |
49745b39 CY |
553 | doc: /* Return new normal size of window WINDOW. |
554 | If WINDOW is omitted or nil, it defaults to the selected window. */) | |
496e208e MR |
555 | (Lisp_Object window) |
556 | { | |
d3d50620 | 557 | return decode_any_window (window)->new_normal; |
496e208e MR |
558 | } |
559 | ||
abde8f8c | 560 | DEFUN ("window-left-column", Fwindow_left_column, Swindow_left_column, 0, 1, 0, |
49745b39 | 561 | doc: /* Return left column of window WINDOW. |
105216ed CY |
562 | This is the distance, in columns, between the left edge of WINDOW and |
563 | the left edge of the frame's window area. For instance, the return | |
564 | value is 0 if there is no window to the left of WINDOW. | |
565 | ||
49745b39 | 566 | If WINDOW is omitted or nil, it defaults to the selected window. */) |
abde8f8c MR |
567 | (Lisp_Object window) |
568 | { | |
d3d50620 | 569 | return decode_any_window (window)->left_col; |
abde8f8c MR |
570 | } |
571 | ||
572 | DEFUN ("window-top-line", Fwindow_top_line, Swindow_top_line, 0, 1, 0, | |
49745b39 | 573 | doc: /* Return top line of window WINDOW. |
105216ed CY |
574 | This is the distance, in lines, between the top of WINDOW and the top |
575 | of the frame's window area. For instance, the return value is 0 if | |
576 | there is no window above WINDOW. | |
577 | ||
49745b39 | 578 | If WINDOW is omitted or nil, it defaults to the selected window. */) |
abde8f8c MR |
579 | (Lisp_Object window) |
580 | { | |
d3d50620 | 581 | return decode_any_window (window)->top_line; |
abde8f8c MR |
582 | } |
583 | ||
584 | /* Return the number of lines of W's body. Don't count any mode or | |
585 | header line of W. */ | |
586 | ||
46a4ce9e | 587 | static int |
abde8f8c MR |
588 | window_body_lines (struct window *w) |
589 | { | |
d3d50620 | 590 | int height = XFASTINT (w->total_lines); |
abde8f8c MR |
591 | |
592 | if (!MINI_WINDOW_P (w)) | |
593 | { | |
594 | if (WINDOW_WANTS_MODELINE_P (w)) | |
595 | --height; | |
596 | if (WINDOW_WANTS_HEADER_LINE_P (w)) | |
597 | --height; | |
598 | } | |
599 | ||
600 | return height; | |
601 | } | |
602 | ||
603 | /* Return the number of columns of W's body. Don't count columns | |
604 | occupied by the scroll bar or the vertical bar separating W from its | |
605 | right sibling. On window-systems don't count fringes or display | |
606 | margins either. */ | |
607 | ||
608 | int | |
609 | window_body_cols (struct window *w) | |
610 | { | |
611 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
d3d50620 | 612 | int width = XINT (w->total_cols); |
abde8f8c MR |
613 | |
614 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) | |
615 | /* Scroll bars occupy a few columns. */ | |
616 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); | |
617 | else if (!FRAME_WINDOW_P (f) | |
618 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
619 | /* The column of `|' characters separating side-by-side windows | |
620 | occupies one column only. */ | |
621 | width -= 1; | |
622 | ||
623 | if (FRAME_WINDOW_P (f)) | |
624 | /* On window-systems, fringes and display margins cannot be | |
625 | used for normal text. */ | |
626 | width -= (WINDOW_FRINGE_COLS (w) | |
627 | + WINDOW_LEFT_MARGIN_COLS (w) | |
628 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
629 | ||
630 | return width; | |
631 | } | |
632 | ||
105216ed CY |
633 | DEFUN ("window-body-height", Fwindow_body_height, Swindow_body_height, 0, 1, 0, |
634 | doc: /* Return the height, in lines, of WINDOW's text area. | |
635 | If WINDOW is omitted or nil, it defaults to the selected window. | |
636 | Signal an error if the window is not live. | |
89bd5ee1 | 637 | |
105216ed CY |
638 | The returned height does not include the mode line or header line. |
639 | On a graphical display, the height is expressed as an integer multiple | |
640 | of the default character height. If a line at the bottom of the text | |
641 | area is only partially visible, that counts as a whole line; to | |
642 | exclude partially-visible lines, use `window-text-height'. */) | |
643 | (Lisp_Object window) | |
abde8f8c | 644 | { |
105216ed CY |
645 | struct window *w = decode_window (window); |
646 | return make_number (window_body_lines (w)); | |
647 | } | |
abde8f8c | 648 | |
105216ed CY |
649 | DEFUN ("window-body-width", Fwindow_body_width, Swindow_body_width, 0, 1, 0, |
650 | doc: /* Return the width, in columns, of WINDOW's text area. | |
651 | If WINDOW is omitted or nil, it defaults to the selected window. | |
652 | Signal an error if the window is not live. | |
653 | ||
654 | The return value does not include any vertical dividers, fringe or | |
655 | marginal areas, or scroll bars. On a graphical display, the width is | |
656 | expressed as an integer multiple of the default character width. */) | |
657 | (Lisp_Object window) | |
658 | { | |
659 | struct window *w = decode_window (window); | |
660 | return make_number (window_body_cols (w)); | |
abde8f8c | 661 | } |
536833ab | 662 | |
7ab12479 | 663 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 | 664 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
496e208e | 665 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 666 | (Lisp_Object window) |
7ab12479 | 667 | { |
80b00b08 | 668 | return make_number (decode_window (window)->hscroll); |
7ab12479 JB |
669 | } |
670 | ||
24a212eb PE |
671 | /* Set W's horizontal scroll amount to HSCROLL clipped to a reasonable |
672 | range, returning the new amount as a fixnum. */ | |
673 | static Lisp_Object | |
674 | set_window_hscroll (struct window *w, EMACS_INT hscroll) | |
675 | { | |
4e71fd89 PE |
676 | /* Horizontal scrolling has problems with large scroll amounts. |
677 | It's too slow with long lines, and even with small lines the | |
678 | display can be messed up. For now, though, impose only the limits | |
679 | required by the internal representation: horizontal scrolling must | |
680 | fit in fixnum (since it's visible to Elisp) and into ptrdiff_t | |
681 | (since it's stored in a ptrdiff_t). */ | |
682 | ptrdiff_t hscroll_max = min (MOST_POSITIVE_FIXNUM, PTRDIFF_MAX); | |
683 | ptrdiff_t new_hscroll = clip_to_bounds (0, hscroll, hscroll_max); | |
24a212eb PE |
684 | |
685 | /* Prevent redisplay shortcuts when changing the hscroll. */ | |
686 | if (w->hscroll != new_hscroll) | |
d3d50620 | 687 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
24a212eb PE |
688 | |
689 | w->hscroll = new_hscroll; | |
690 | return make_number (new_hscroll); | |
691 | } | |
692 | ||
7ab12479 | 693 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, |
fdb82f93 | 694 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
0cf34688 | 695 | If WINDOW is nil, the selected window is used. |
24a212eb PE |
696 | Clip the number to a reasonable value if out of range. |
697 | Return the new number. NCOL should be zero or positive. | |
ebadb1e4 EZ |
698 | |
699 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 700 | window so that the location of point moves off-window. */) |
5842a27b | 701 | (Lisp_Object window, Lisp_Object ncol) |
7ab12479 | 702 | { |
ea68264b | 703 | struct window *w = decode_window (window); |
7ab12479 | 704 | |
b7826503 | 705 | CHECK_NUMBER (ncol); |
24a212eb | 706 | return set_window_hscroll (w, XINT (ncol)); |
7ab12479 JB |
707 | } |
708 | ||
190eb263 RS |
709 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
710 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 711 | doc: /* Return WINDOW's redisplay end trigger value. |
c85322d0 | 712 | WINDOW defaults to the selected window. |
fdb82f93 | 713 | See `set-window-redisplay-end-trigger' for more information. */) |
5842a27b | 714 | (Lisp_Object window) |
190eb263 | 715 | { |
d3d50620 | 716 | return decode_window (window)->redisplay_end_trigger; |
190eb263 RS |
717 | } |
718 | ||
719 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
720 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
721 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
722 | VALUE should be a buffer position (typically a marker) or nil. | |
723 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
724 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
725 | with two arguments: WINDOW, and the end trigger value. | |
726 | Afterwards the end-trigger value is reset to nil. */) | |
5842a27b | 727 | (register Lisp_Object window, Lisp_Object value) |
190eb263 | 728 | { |
077288cf | 729 | return WSET (decode_window (window), redisplay_end_trigger, value); |
190eb263 RS |
730 | } |
731 | ||
7ab12479 | 732 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 | 733 | doc: /* Return a list of the edge coordinates of WINDOW. |
b35ac83e CY |
734 | The list has the form (LEFT TOP RIGHT BOTTOM). |
735 | TOP and BOTTOM count by lines, and LEFT and RIGHT count by columns, | |
736 | all relative to 0, 0 at top left corner of frame. | |
737 | ||
738 | RIGHT is one more than the rightmost column occupied by WINDOW. | |
739 | BOTTOM is one more than the bottommost row occupied by WINDOW. | |
740 | The edges include the space used by WINDOW's scroll bar, display | |
741 | margins, fringes, header line, and/or mode line. For the edges of | |
742 | just the text area, use `window-inside-edges'. */) | |
5842a27b | 743 | (Lisp_Object window) |
7ab12479 | 744 | { |
6b61353c | 745 | register struct window *w = decode_any_window (window); |
d3d50620 | 746 | CHECK_LIVE_FRAME (w->frame); |
7ab12479 | 747 | |
949cf20f KS |
748 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
749 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), | |
750 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), | |
751 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), | |
752 | Qnil)))); | |
7ab12479 JB |
753 | } |
754 | ||
c99a9eb3 RS |
755 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
756 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
b35ac83e CY |
757 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at |
758 | the top left corner of the frame. | |
759 | ||
760 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
761 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
762 | The pixel edges include the space used by WINDOW's scroll bar, display | |
763 | margins, fringes, header line, and/or mode line. For the pixel edges | |
764 | of just the text area, use `window-inside-pixel-edges'. */) | |
5842a27b | 765 | (Lisp_Object window) |
c99a9eb3 | 766 | { |
6b61353c | 767 | register struct window *w = decode_any_window (window); |
d3d50620 | 768 | CHECK_LIVE_FRAME (w->frame); |
c99a9eb3 RS |
769 | |
770 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w)), | |
771 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w)), | |
772 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w)), | |
773 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w)), | |
774 | Qnil)))); | |
775 | } | |
776 | ||
9d5405ec | 777 | static void |
5e617bc2 | 778 | calc_absolute_offset (struct window *w, int *add_x, int *add_y) |
9d5405ec | 779 | { |
d3d50620 | 780 | struct frame *f = XFRAME (w->frame); |
9d5405ec J |
781 | *add_y = f->top_pos; |
782 | #ifdef FRAME_MENUBAR_HEIGHT | |
783 | *add_y += FRAME_MENUBAR_HEIGHT (f); | |
784 | #endif | |
bfeabdc3 JD |
785 | #ifdef FRAME_TOOLBAR_TOP_HEIGHT |
786 | *add_y += FRAME_TOOLBAR_TOP_HEIGHT (f); | |
787 | #elif FRAME_TOOLBAR_HEIGHT | |
9d5405ec J |
788 | *add_y += FRAME_TOOLBAR_HEIGHT (f); |
789 | #endif | |
790 | #ifdef FRAME_NS_TITLEBAR_HEIGHT | |
791 | *add_y += FRAME_NS_TITLEBAR_HEIGHT (f); | |
792 | #endif | |
793 | *add_x = f->left_pos; | |
bfeabdc3 JD |
794 | #ifdef FRAME_TOOLBAR_LEFT_WIDTH |
795 | *add_x += FRAME_TOOLBAR_LEFT_WIDTH (f); | |
796 | #endif | |
9d5405ec J |
797 | } |
798 | ||
799 | DEFUN ("window-absolute-pixel-edges", Fwindow_absolute_pixel_edges, | |
800 | Swindow_absolute_pixel_edges, 0, 1, 0, | |
801 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
802 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at | |
803 | the top left corner of the display. | |
804 | ||
805 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
806 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
807 | The pixel edges include the space used by WINDOW's scroll bar, display | |
808 | margins, fringes, header line, and/or mode line. For the pixel edges | |
c49d071a | 809 | of just the text area, use `window-inside-absolute-pixel-edges'. */) |
5842a27b | 810 | (Lisp_Object window) |
9d5405ec J |
811 | { |
812 | register struct window *w = decode_any_window (window); | |
813 | int add_x, add_y; | |
d10a51dc | 814 | |
d3d50620 | 815 | CHECK_LIVE_FRAME (w->frame); |
ed3751c8 | 816 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec J |
817 | |
818 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w) + add_x), | |
819 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w) + add_y), | |
820 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w) + add_x), | |
821 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w) + add_y), | |
822 | Qnil)))); | |
823 | } | |
824 | ||
c99a9eb3 RS |
825 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, |
826 | doc: /* Return a list of the edge coordinates of WINDOW. | |
b35ac83e CY |
827 | The list has the form (LEFT TOP RIGHT BOTTOM). |
828 | TOP and BOTTOM count by lines, and LEFT and RIGHT count by columns, | |
829 | all relative to 0, 0 at top left corner of frame. | |
830 | ||
831 | RIGHT is one more than the rightmost column of WINDOW's text area. | |
832 | BOTTOM is one more than the bottommost row of WINDOW's text area. | |
833 | The inside edges do not include the space used by the WINDOW's scroll | |
834 | bar, display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 835 | (Lisp_Object window) |
c99a9eb3 | 836 | { |
2fbdc249 | 837 | register struct window *w = decode_window (window); |
c99a9eb3 RS |
838 | |
839 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w) | |
840 | + WINDOW_LEFT_MARGIN_COLS (w) | |
841 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
842 | make_number (WINDOW_TOP_EDGE_LINE (w) | |
843 | + WINDOW_HEADER_LINE_LINES (w)), | |
f3fbdb1f | 844 | make_number (WINDOW_BOX_RIGHT_EDGE_COL (w) |
c99a9eb3 RS |
845 | - WINDOW_RIGHT_MARGIN_COLS (w) |
846 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
847 | make_number (WINDOW_BOTTOM_EDGE_LINE (w) | |
848 | - WINDOW_MODE_LINE_LINES (w))); | |
849 | } | |
850 | ||
851 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
2fbdc249 CY |
852 | doc: /* Return a list of the edge pixel coordinates of WINDOW's text area. |
853 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to (0,0) | |
854 | at the top left corner of the frame's window area. | |
b35ac83e CY |
855 | |
856 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
857 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
858 | The inside edges do not include the space used by WINDOW's scroll bar, | |
c99a9eb3 | 859 | display margins, fringes, header line, and/or mode line. */) |
5842a27b | 860 | (Lisp_Object window) |
c99a9eb3 | 861 | { |
2fbdc249 | 862 | register struct window *w = decode_window (window); |
c99a9eb3 RS |
863 | |
864 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
865 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
866 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
867 | make_number (WINDOW_TOP_EDGE_Y (w) | |
868 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
f3fbdb1f | 869 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) |
c99a9eb3 RS |
870 | - WINDOW_RIGHT_MARGIN_WIDTH (w) |
871 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
872 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
873 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
874 | } | |
875 | ||
9d5405ec J |
876 | DEFUN ("window-inside-absolute-pixel-edges", |
877 | Fwindow_inside_absolute_pixel_edges, | |
878 | Swindow_inside_absolute_pixel_edges, 0, 1, 0, | |
2fbdc249 CY |
879 | doc: /* Return a list of the edge pixel coordinates of WINDOW's text area. |
880 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to (0,0) | |
881 | at the top left corner of the frame's window area. | |
9d5405ec J |
882 | |
883 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
884 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
885 | The inside edges do not include the space used by WINDOW's scroll bar, | |
886 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 887 | (Lisp_Object window) |
9d5405ec | 888 | { |
2fbdc249 | 889 | register struct window *w = decode_window (window); |
9d5405ec | 890 | int add_x, add_y; |
ed3751c8 | 891 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec J |
892 | |
893 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
894 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
895 | + WINDOW_LEFT_FRINGE_WIDTH (w) + add_x), | |
896 | make_number (WINDOW_TOP_EDGE_Y (w) | |
897 | + WINDOW_HEADER_LINE_HEIGHT (w) + add_y), | |
898 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) | |
899 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
900 | - WINDOW_RIGHT_FRINGE_WIDTH (w) + add_x), | |
901 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
902 | - WINDOW_MODE_LINE_HEIGHT (w) + add_y)); | |
903 | } | |
904 | ||
9173a8fb | 905 | /* Test if the character at column X, row Y is within window W. |
341f3858 | 906 | If it is not, return ON_NOTHING; |
9173a8fb | 907 | if it is in the window's text area, return ON_TEXT; |
341f3858 | 908 | if it is on the window's modeline, return ON_MODE_LINE; |
d5783c40 | 909 | if it is on the border between the window and its right sibling, |
341f3858 | 910 | return ON_VERTICAL_BORDER. |
9173a8fb | 911 | if it is on a scroll bar, return ON_SCROLL_BAR. |
341f3858 | 912 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 913 | if it is in left or right fringe of the window, |
9173a8fb | 914 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE; |
49b996e7 | 915 | if it is in the marginal area to the left/right of the window, |
9173a8fb | 916 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN. |
5500c422 GM |
917 | |
918 | X and Y are frame relative pixel coordinates. */ | |
919 | ||
7442878f | 920 | static enum window_part |
9173a8fb | 921 | coordinates_in_window (register struct window *w, int x, int y) |
d5783c40 | 922 | { |
b0228ace | 923 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
7442878f | 924 | enum window_part part; |
949cf20f | 925 | int ux = FRAME_COLUMN_WIDTH (f); |
c7b08b0d MR |
926 | int left_x = WINDOW_LEFT_EDGE_X (w); |
927 | int right_x = WINDOW_RIGHT_EDGE_X (w); | |
928 | int top_y = WINDOW_TOP_EDGE_Y (w); | |
929 | int bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
dad75588 GM |
930 | /* The width of the area where the vertical line can be dragged. |
931 | (Between mode lines for instance. */ | |
932 | int grabbable_width = ux; | |
949cf20f | 933 | int lmargin_width, rmargin_width, text_left, text_right; |
9173a8fb | 934 | |
c7b08b0d MR |
935 | /* Outside any interesting row or column? */ |
936 | if (y < top_y || y >= bottom_y || x < left_x || x >= right_x) | |
9173a8fb | 937 | return ON_NOTHING; |
b0228ace | 938 | |
c7b08b0d MR |
939 | /* On the mode line or header line? */ |
940 | if ((WINDOW_WANTS_MODELINE_P (w) | |
941 | && y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w) | |
942 | && (part = ON_MODE_LINE)) | |
943 | || (WINDOW_WANTS_HEADER_LINE_P (w) | |
944 | && y < top_y + CURRENT_HEADER_LINE_HEIGHT (w) | |
945 | && (part = ON_HEADER_LINE))) | |
946 | { | |
947 | /* If it's under/over the scroll bar portion of the mode/header | |
948 | line, say it's on the vertical line. That's to be able to | |
949 | resize windows horizontally in case we're using toolkit scroll | |
950 | bars. Note: If scrollbars are on the left, the window that | |
951 | must be eventually resized is that on the left of WINDOW. */ | |
952 | if ((WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) | |
953 | && !WINDOW_LEFTMOST_P (w) | |
954 | && eabs (x - left_x) < grabbable_width) | |
955 | || (!WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) | |
956 | && !WINDOW_RIGHTMOST_P (w) | |
957 | && eabs (x - right_x) < grabbable_width)) | |
958 | return ON_VERTICAL_BORDER; | |
959 | else | |
960 | return part; | |
961 | } | |
962 | ||
466539bc EZ |
963 | /* In what's below, we subtract 1 when computing right_x because we |
964 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
965 | if (w->pseudo_window_p) |
966 | { | |
967 | left_x = 0; | |
949cf20f | 968 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
5500c422 GM |
969 | } |
970 | else | |
971 | { | |
949cf20f KS |
972 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
973 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
5500c422 | 974 | } |
37962e60 | 975 | |
949cf20f | 976 | /* Outside any interesting column? */ |
9173a8fb CY |
977 | if (x < left_x || x > right_x) |
978 | return ON_SCROLL_BAR; | |
949cf20f KS |
979 | |
980 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
981 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 982 | |
949cf20f KS |
983 | text_left = window_box_left (w, TEXT_AREA); |
984 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
985 | ||
986 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 987 | { |
447e9da0 | 988 | if (!w->pseudo_window_p |
949cf20f | 989 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 990 | && !WINDOW_RIGHTMOST_P (w) |
9173a8fb CY |
991 | && (eabs (x - right_x) < grabbable_width)) |
992 | return ON_VERTICAL_BORDER; | |
fbad6f9a | 993 | } |
9173a8fb CY |
994 | /* Need to say "x > right_x" rather than >=, since on character |
995 | terminals, the vertical line's x coordinate is right_x. */ | |
996 | else if (!w->pseudo_window_p | |
997 | && !WINDOW_RIGHTMOST_P (w) | |
998 | && x > right_x - ux) | |
999 | return ON_VERTICAL_BORDER; | |
1000 | ||
1001 | if (x < text_left) | |
949cf20f KS |
1002 | { |
1003 | if (lmargin_width > 0 | |
1004 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1005 | ? (x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) |
1006 | : (x < left_x + lmargin_width))) | |
1007 | return ON_LEFT_MARGIN; | |
1008 | ||
949cf20f KS |
1009 | return ON_LEFT_FRINGE; |
1010 | } | |
1011 | ||
9173a8fb | 1012 | if (x >= text_right) |
949cf20f KS |
1013 | { |
1014 | if (rmargin_width > 0 | |
1015 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1016 | ? (x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) |
1017 | : (x >= right_x - rmargin_width))) | |
1018 | return ON_RIGHT_MARGIN; | |
1019 | ||
949cf20f KS |
1020 | return ON_RIGHT_FRINGE; |
1021 | } | |
1022 | ||
1023 | /* Everything special ruled out - must be on text area */ | |
949cf20f | 1024 | return ON_TEXT; |
d5783c40 JB |
1025 | } |
1026 | ||
9173a8fb CY |
1027 | /* Take X is the frame-relative pixel x-coordinate, and return the |
1028 | x-coordinate relative to part PART of window W. */ | |
1029 | int | |
1030 | window_relative_x_coord (struct window *w, enum window_part part, int x) | |
1031 | { | |
1032 | int left_x = (w->pseudo_window_p) ? 0 : WINDOW_BOX_LEFT_EDGE_X (w); | |
1033 | ||
1034 | switch (part) | |
1035 | { | |
1036 | case ON_TEXT: | |
1037 | return x - window_box_left (w, TEXT_AREA); | |
1038 | ||
1039 | case ON_LEFT_FRINGE: | |
1040 | return x - left_x; | |
1041 | ||
1042 | case ON_RIGHT_FRINGE: | |
1043 | return x - left_x - WINDOW_LEFT_FRINGE_WIDTH (w); | |
1044 | ||
1045 | case ON_LEFT_MARGIN: | |
1046 | return (x - left_x | |
1047 | - ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1048 | ? WINDOW_LEFT_FRINGE_WIDTH (w) : 0)); | |
1049 | ||
1050 | case ON_RIGHT_MARGIN: | |
1051 | return (x + 1 | |
1052 | - ((w->pseudo_window_p) | |
1053 | ? WINDOW_TOTAL_WIDTH (w) | |
1054 | : WINDOW_BOX_RIGHT_EDGE_X (w)) | |
1055 | + window_box_width (w, RIGHT_MARGIN_AREA) | |
1056 | + ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1057 | ? WINDOW_RIGHT_FRINGE_WIDTH (w) : 0)); | |
1058 | } | |
1059 | ||
1060 | /* ON_SCROLL_BAR, ON_NOTHING, and ON_VERTICAL_BORDER: */ | |
1061 | return 0; | |
1062 | } | |
1063 | ||
b0228ace | 1064 | |
d5783c40 | 1065 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
1066 | Scoordinates_in_window_p, 2, 2, 0, |
1067 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
90ec88df | 1068 | WINDOW must be a live window. |
fdb82f93 PJ |
1069 | COORDINATES is a cons of the form (X . Y), X and Y being distances |
1070 | measured in characters from the upper-left corner of the frame. | |
23fe745a | 1071 | \(0 . 0) denotes the character in the upper left corner of the |
fdb82f93 PJ |
1072 | frame. |
1073 | If COORDINATES are in the text portion of WINDOW, | |
1074 | the coordinates relative to the window are returned. | |
1075 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
1076 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
1077 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
1078 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 1079 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
1080 | `vertical-line' is returned. |
1081 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
1082 | or `right-margin' is returned. */) | |
5842a27b | 1083 | (register Lisp_Object coordinates, Lisp_Object window) |
d5783c40 | 1084 | { |
5500c422 GM |
1085 | struct window *w; |
1086 | struct frame *f; | |
d5783c40 | 1087 | int x, y; |
5500c422 | 1088 | Lisp_Object lx, ly; |
d5783c40 | 1089 | |
90ec88df | 1090 | CHECK_LIVE_WINDOW (window); |
5500c422 | 1091 | w = XWINDOW (window); |
d3d50620 | 1092 | f = XFRAME (w->frame); |
b7826503 | 1093 | CHECK_CONS (coordinates); |
5500c422 GM |
1094 | lx = Fcar (coordinates); |
1095 | ly = Fcdr (coordinates); | |
b7826503 PJ |
1096 | CHECK_NUMBER_OR_FLOAT (lx); |
1097 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
1098 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
1099 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 | 1100 | |
9173a8fb | 1101 | switch (coordinates_in_window (w, x, y)) |
d5783c40 | 1102 | { |
7442878f | 1103 | case ON_NOTHING: |
d5783c40 JB |
1104 | return Qnil; |
1105 | ||
7442878f | 1106 | case ON_TEXT: |
9173a8fb CY |
1107 | /* Convert X and Y to window relative pixel coordinates, and |
1108 | return the canonical char units. */ | |
1109 | x -= window_box_left (w, TEXT_AREA); | |
1110 | y -= WINDOW_TOP_EDGE_Y (w); | |
949cf20f KS |
1111 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
1112 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 1113 | |
7442878f | 1114 | case ON_MODE_LINE: |
d5783c40 | 1115 | return Qmode_line; |
37962e60 | 1116 | |
7442878f | 1117 | case ON_VERTICAL_BORDER: |
e5d77022 | 1118 | return Qvertical_line; |
d5783c40 | 1119 | |
7442878f | 1120 | case ON_HEADER_LINE: |
045dee35 | 1121 | return Qheader_line; |
5500c422 | 1122 | |
7442878f GM |
1123 | case ON_LEFT_FRINGE: |
1124 | return Qleft_fringe; | |
177c0ea7 | 1125 | |
7442878f GM |
1126 | case ON_RIGHT_FRINGE: |
1127 | return Qright_fringe; | |
fbad6f9a | 1128 | |
49b996e7 GM |
1129 | case ON_LEFT_MARGIN: |
1130 | return Qleft_margin; | |
177c0ea7 | 1131 | |
49b996e7 GM |
1132 | case ON_RIGHT_MARGIN: |
1133 | return Qright_margin; | |
1134 | ||
6487f669 RS |
1135 | case ON_SCROLL_BAR: |
1136 | /* Historically we are supposed to return nil in this case. */ | |
1137 | return Qnil; | |
1138 | ||
d5783c40 JB |
1139 | default: |
1140 | abort (); | |
1141 | } | |
1142 | } | |
1143 | ||
67492200 GM |
1144 | |
1145 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
1146 | Check if window W contains coordinates specified by USER_DATA which |
1147 | is actually a pointer to a struct check_window_data CW. | |
1148 | ||
1149 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
1150 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 1151 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
1152 | zero from this function to stop iterating over windows. */ |
1153 | ||
1154 | struct check_window_data | |
1155 | { | |
1156 | Lisp_Object *window; | |
9173a8fb | 1157 | int x, y; |
341f3858 | 1158 | enum window_part *part; |
f95464e4 | 1159 | }; |
67492200 GM |
1160 | |
1161 | static int | |
971de7fb | 1162 | check_window_containing (struct window *w, void *user_data) |
67492200 | 1163 | { |
f95464e4 | 1164 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
1165 | enum window_part found; |
1166 | int continue_p = 1; | |
67492200 | 1167 | |
f95464e4 | 1168 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1169 | if (found != ON_NOTHING) |
67492200 | 1170 | { |
341f3858 | 1171 | *cw->part = found; |
f95464e4 | 1172 | XSETWINDOW (*cw->window, w); |
7442878f | 1173 | continue_p = 0; |
67492200 | 1174 | } |
177c0ea7 | 1175 | |
7442878f | 1176 | return continue_p; |
67492200 GM |
1177 | } |
1178 | ||
1179 | ||
5500c422 | 1180 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1181 | return it as a Lisp_Object. |
1182 | ||
1183 | If X, Y is on one of the window's special `window_part' elements, | |
9173a8fb | 1184 | set *PART to the id of that element. |
949cf20f | 1185 | |
341f3858 | 1186 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1187 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1188 | ||
1189 | This function was previously implemented with a loop cycling over | |
1190 | windows with Fnext_window, and starting with the frame's selected | |
1191 | window. It turned out that this doesn't work with an | |
1192 | implementation of next_window using Vwindow_list, because | |
1193 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1194 | tree of F when this function is called asynchronously from | |
1195 | note_mouse_highlight. The original loop didn't terminate in this | |
1196 | case. */ | |
5500c422 | 1197 | |
7ab12479 | 1198 | Lisp_Object |
9173a8fb CY |
1199 | window_from_coordinates (struct frame *f, int x, int y, |
1200 | enum window_part *part, int tool_bar_p) | |
7ab12479 | 1201 | { |
67492200 | 1202 | Lisp_Object window; |
f95464e4 | 1203 | struct check_window_data cw; |
341f3858 KS |
1204 | enum window_part dummy; |
1205 | ||
1206 | if (part == 0) | |
1207 | part = &dummy; | |
5500c422 | 1208 | |
67492200 | 1209 | window = Qnil; |
9173a8fb | 1210 | cw.window = &window, cw.x = x, cw.y = y; cw.part = part; |
f95464e4 | 1211 | foreach_window (f, check_window_containing, &cw); |
177c0ea7 | 1212 | |
67492200 GM |
1213 | /* If not found above, see if it's in the tool bar window, if a tool |
1214 | bar exists. */ | |
1215 | if (NILP (window) | |
1216 | && tool_bar_p | |
e69b0960 DA |
1217 | && WINDOWP (f->tool_bar_window) |
1218 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 | |
1219 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), x, y) | |
7442878f | 1220 | != ON_NOTHING)) |
5500c422 | 1221 | { |
341f3858 | 1222 | *part = ON_TEXT; |
e69b0960 | 1223 | window = f->tool_bar_window; |
5500c422 | 1224 | } |
37962e60 | 1225 | |
67492200 | 1226 | return window; |
7ab12479 JB |
1227 | } |
1228 | ||
ab17c3f2 | 1229 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 | 1230 | doc: /* Return window containing coordinates X and Y on FRAME. |
496e208e | 1231 | FRAME must be a live frame and defaults to the selected one. |
fdb82f93 PJ |
1232 | The top left corner of the frame is considered to be row 0, |
1233 | column 0. */) | |
5842a27b | 1234 | (Lisp_Object x, Lisp_Object y, Lisp_Object frame) |
7ab12479 | 1235 | { |
5500c422 | 1236 | struct frame *f; |
7ab12479 | 1237 | |
44fa5b1e | 1238 | if (NILP (frame)) |
1ae1a37d | 1239 | frame = selected_frame; |
b7826503 | 1240 | CHECK_LIVE_FRAME (frame); |
5500c422 | 1241 | f = XFRAME (frame); |
7ab12479 | 1242 | |
5500c422 | 1243 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1244 | CHECK_NUMBER_OR_FLOAT (x); |
1245 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1246 | |
177c0ea7 | 1247 | return window_from_coordinates (f, |
2c77cf3b RS |
1248 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1249 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1250 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1251 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
9173a8fb | 1252 | 0, 0); |
7ab12479 JB |
1253 | } |
1254 | ||
1255 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1256 | doc: /* Return current value of point in WINDOW. |
496e208e | 1257 | WINDOW must be a live window and defaults to the selected one. |
c85322d0 | 1258 | |
fdb82f93 PJ |
1259 | For a nonselected window, this is the value point would have |
1260 | if that window were selected. | |
1261 | ||
1262 | Note that, when WINDOW is the selected window and its buffer | |
1263 | is also currently selected, the value returned is the same as (point). | |
1264 | It would be more strictly correct to return the `top-level' value | |
1265 | of point, outside of any save-excursion forms. | |
1266 | But that is hard to define. */) | |
5842a27b | 1267 | (Lisp_Object window) |
7ab12479 JB |
1268 | { |
1269 | register struct window *w = decode_window (window); | |
1270 | ||
1271 | if (w == XWINDOW (selected_window) | |
d3d50620 | 1272 | && current_buffer == XBUFFER (w->buffer)) |
7ab12479 | 1273 | return Fpoint (); |
d3d50620 | 1274 | return Fmarker_position (w->pointm); |
7ab12479 JB |
1275 | } |
1276 | ||
1277 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1278 | doc: /* Return position at which display currently starts in WINDOW. |
496e208e | 1279 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 1280 | This is updated by redisplay or by calling `set-window-start'. */) |
5842a27b | 1281 | (Lisp_Object window) |
7ab12479 | 1282 | { |
d3d50620 | 1283 | return Fmarker_position (decode_window (window)->start); |
7ab12479 JB |
1284 | } |
1285 | ||
8646118f RS |
1286 | /* This is text temporarily removed from the doc string below. |
1287 | ||
fdb82f93 PJ |
1288 | This function returns nil if the position is not currently known. |
1289 | That happens when redisplay is preempted and doesn't finish. | |
1290 | If in that case you want to compute where the end of the window would | |
1291 | have been if redisplay had finished, do this: | |
1292 | (save-excursion | |
1293 | (goto-char (window-start window)) | |
1294 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1295 | (point))") */ |
1296 | ||
478292ed | 1297 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1298 | doc: /* Return position at which display currently ends in WINDOW. |
496e208e | 1299 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1300 | This is updated by redisplay, when it runs to completion. |
1301 | Simply changing the buffer text or setting `window-start' | |
1302 | does not update this value. | |
87e68db4 | 1303 | Return nil if there is no recorded value. (This can happen if the |
a0a37a6f | 1304 | last redisplay of WINDOW was preempted, and did not finish.) |
fdb82f93 PJ |
1305 | If UPDATE is non-nil, compute the up-to-date position |
1306 | if it isn't already recorded. */) | |
5842a27b | 1307 | (Lisp_Object window, Lisp_Object update) |
7ab12479 JB |
1308 | { |
1309 | Lisp_Object value; | |
1310 | struct window *w = decode_window (window); | |
5a41ab94 | 1311 | Lisp_Object buf; |
31790df3 | 1312 | struct buffer *b; |
5a41ab94 | 1313 | |
d3d50620 | 1314 | buf = w->buffer; |
b7826503 | 1315 | CHECK_BUFFER (buf); |
b3a10345 | 1316 | b = XBUFFER (buf); |
5a41ab94 | 1317 | |
8646118f | 1318 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1319 | /* If we don't know the end position, return nil. |
1320 | The user can compute it with vertical-motion if he wants to. | |
1321 | It would be nicer to do it automatically, | |
1322 | but that's so slow that it would probably bother people. */ | |
d3d50620 | 1323 | if (NILP (w->window_end_valid)) |
7250968e | 1324 | return Qnil; |
8646118f | 1325 | #endif |
7250968e | 1326 | |
478292ed | 1327 | if (! NILP (update) |
d3d50620 | 1328 | && ! (! NILP (w->window_end_valid) |
80b00b08 DA |
1329 | && w->last_modified >= BUF_MODIFF (b) |
1330 | && w->last_overlay_modified >= BUF_OVERLAY_MODIFF (b)) | |
41791a20 | 1331 | && !noninteractive) |
478292ed | 1332 | { |
cbc099e5 GM |
1333 | struct text_pos startp; |
1334 | struct it it; | |
b3a10345 | 1335 | struct buffer *old_buffer = NULL; |
57b3e30b | 1336 | void *itdata = NULL; |
b3a10345 KS |
1337 | |
1338 | /* Cannot use Fvertical_motion because that function doesn't | |
1339 | cope with variable-height lines. */ | |
1340 | if (b != current_buffer) | |
1341 | { | |
1342 | old_buffer = current_buffer; | |
1343 | set_buffer_internal (b); | |
1344 | } | |
2d6d9df0 GM |
1345 | |
1346 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1347 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1348 | `-l' containing a call to `rmail' with subsequent other |
1349 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1350 | rmail had already narrowed the buffer. */ |
d3d50620 | 1351 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 1352 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
d3d50620 | 1353 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 1354 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1355 | else |
d3d50620 | 1356 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
cbc099e5 | 1357 | |
57b3e30b | 1358 | itdata = bidi_shelve_cache (); |
cbc099e5 GM |
1359 | start_display (&it, w, startp); |
1360 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1361 | if (it.current_y < it.last_visible_y) |
1362 | move_it_past_eol (&it); | |
cbc099e5 | 1363 | value = make_number (IT_CHARPOS (it)); |
35928349 | 1364 | bidi_unshelve_cache (itdata, 0); |
177c0ea7 | 1365 | |
99593a9d GM |
1366 | if (old_buffer) |
1367 | set_buffer_internal (old_buffer); | |
478292ed RS |
1368 | } |
1369 | else | |
d3d50620 | 1370 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1371 | |
1372 | return value; | |
1373 | } | |
1374 | ||
a7ca3326 | 1375 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, |
a0a37a6f LT |
1376 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
1377 | Return POS. */) | |
5842a27b | 1378 | (Lisp_Object window, Lisp_Object pos) |
7ab12479 JB |
1379 | { |
1380 | register struct window *w = decode_window (window); | |
1381 | ||
b7826503 | 1382 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 | 1383 | if (w == XWINDOW (selected_window) |
d3d50620 | 1384 | && XBUFFER (w->buffer) == current_buffer) |
7ab12479 JB |
1385 | Fgoto_char (pos); |
1386 | else | |
d3d50620 | 1387 | set_marker_restricted (w->pointm, pos, w->buffer); |
799417bd | 1388 | |
0685cb3c GM |
1389 | /* We have to make sure that redisplay updates the window to show |
1390 | the new value of point. */ | |
1391 | if (!EQ (window, selected_window)) | |
799417bd | 1392 | ++windows_or_buffers_changed; |
177c0ea7 | 1393 | |
7ab12479 JB |
1394 | return pos; |
1395 | } | |
1396 | ||
1397 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1398 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
0cf34688 | 1399 | If WINDOW is nil, the selected window is used. Return POS. |
d653c8cc MR |
1400 | Optional third arg NOFORCE non-nil inhibits next redisplay from |
1401 | overriding motion of point in order to display at this exact start. */) | |
5842a27b | 1402 | (Lisp_Object window, Lisp_Object pos, Lisp_Object noforce) |
7ab12479 JB |
1403 | { |
1404 | register struct window *w = decode_window (window); | |
1405 | ||
b7826503 | 1406 | CHECK_NUMBER_COERCE_MARKER (pos); |
d3d50620 | 1407 | set_marker_restricted (w->start, pos, w->buffer); |
7ab12479 | 1408 | /* this is not right, but much easier than doing what is right. */ |
c98ff5dd | 1409 | w->start_at_line_beg = 0; |
265a9e55 | 1410 | if (NILP (noforce)) |
c98ff5dd DA |
1411 | w->force_start = 1; |
1412 | w->update_mode_line = 1; | |
80b00b08 DA |
1413 | w->last_modified = 0; |
1414 | w->last_overlay_modified = 0; | |
62c07cc7 JB |
1415 | if (!EQ (window, selected_window)) |
1416 | windows_or_buffers_changed++; | |
ce7fae7d | 1417 | |
7ab12479 JB |
1418 | return pos; |
1419 | } | |
1420 | ||
496e208e MR |
1421 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
1422 | Spos_visible_in_window_p, 0, 3, 0, | |
1423 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. | |
1424 | Return nil if that position is scrolled vertically out of view. | |
1425 | If a character is only partially visible, nil is returned, unless the | |
1426 | optional argument PARTIALLY is non-nil. | |
1427 | If POS is only out of view because of horizontal scrolling, return non-nil. | |
1428 | If POS is t, it specifies the position of the last visible glyph in WINDOW. | |
1429 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. | |
1430 | ||
1431 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
1432 | return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), | |
1433 | where X and Y are the pixel coordinates relative to the top left corner | |
1434 | of the window. The remaining elements are omitted if the character after | |
1435 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
1436 | off-window at the top and bottom of the row, ROWH is the height of the | |
1437 | display row, and VPOS is the row number (0-based) containing POS. */) | |
1438 | (Lisp_Object pos, Lisp_Object window, Lisp_Object partially) | |
1439 | { | |
1440 | register struct window *w; | |
1441 | register EMACS_INT posint; | |
1442 | register struct buffer *buf; | |
1443 | struct text_pos top; | |
1444 | Lisp_Object in_window = Qnil; | |
1445 | int rtop, rbot, rowh, vpos, fully_p = 1; | |
1446 | int x, y; | |
1447 | ||
1448 | w = decode_window (window); | |
d3d50620 DA |
1449 | buf = XBUFFER (w->buffer); |
1450 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
496e208e MR |
1451 | |
1452 | if (EQ (pos, Qt)) | |
1453 | posint = -1; | |
1454 | else if (!NILP (pos)) | |
1455 | { | |
1456 | CHECK_NUMBER_COERCE_MARKER (pos); | |
1457 | posint = XINT (pos); | |
1458 | } | |
1459 | else if (w == XWINDOW (selected_window)) | |
1460 | posint = PT; | |
1461 | else | |
d3d50620 | 1462 | posint = XMARKER (w->pointm)->charpos; |
496e208e MR |
1463 | |
1464 | /* If position is above window start or outside buffer boundaries, | |
1465 | or if window start is out of range, position is not visible. */ | |
1466 | if ((EQ (pos, Qt) | |
1467 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
1468 | && CHARPOS (top) >= BUF_BEGV (buf) | |
1469 | && CHARPOS (top) <= BUF_ZV (buf) | |
1470 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) | |
1471 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) | |
1472 | in_window = Qt; | |
1473 | ||
1474 | if (!NILP (in_window) && !NILP (partially)) | |
1475 | { | |
1476 | Lisp_Object part = Qnil; | |
1477 | if (!fully_p) | |
1478 | part = list4 (make_number (rtop), make_number (rbot), | |
1479 | make_number (rowh), make_number (vpos)); | |
1480 | in_window = Fcons (make_number (x), | |
1481 | Fcons (make_number (y), part)); | |
1482 | } | |
1483 | ||
1484 | return in_window; | |
1485 | } | |
1486 | ||
1487 | DEFUN ("window-line-height", Fwindow_line_height, | |
1488 | Swindow_line_height, 0, 2, 0, | |
1489 | doc: /* Return height in pixels of text line LINE in window WINDOW. | |
1490 | WINDOW defaults to the selected window. | |
1491 | ||
1492 | Return height of current line if LINE is omitted or nil. Return height of | |
1493 | header or mode line if LINE is `header-line' or `mode-line'. | |
1494 | Otherwise, LINE is a text line number starting from 0. A negative number | |
1495 | counts from the end of the window. | |
1496 | ||
1497 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height | |
1498 | in pixels of the visible part of the line, VPOS and YPOS are the | |
1499 | vertical position in lines and pixels of the line, relative to the top | |
1500 | of the first text line, and OFFBOT is the number of off-window pixels at | |
1501 | the bottom of the text line. If there are off-window pixels at the top | |
1502 | of the (first) text line, YPOS is negative. | |
1503 | ||
1504 | Return nil if window display is not up-to-date. In that case, use | |
1505 | `pos-visible-in-window-p' to obtain the information. */) | |
1506 | (Lisp_Object line, Lisp_Object window) | |
1507 | { | |
1508 | register struct window *w; | |
1509 | register struct buffer *b; | |
1510 | struct glyph_row *row, *end_row; | |
d311d28c PE |
1511 | int max_y, crop, i; |
1512 | EMACS_INT n; | |
496e208e MR |
1513 | |
1514 | w = decode_window (window); | |
1515 | ||
1516 | if (noninteractive || w->pseudo_window_p) | |
1517 | return Qnil; | |
1518 | ||
d3d50620 DA |
1519 | CHECK_BUFFER (w->buffer); |
1520 | b = XBUFFER (w->buffer); | |
496e208e MR |
1521 | |
1522 | /* Fail if current matrix is not up-to-date. */ | |
d3d50620 | 1523 | if (NILP (w->window_end_valid) |
496e208e MR |
1524 | || current_buffer->clip_changed |
1525 | || current_buffer->prevent_redisplay_optimizations_p | |
80b00b08 DA |
1526 | || w->last_modified < BUF_MODIFF (b) |
1527 | || w->last_overlay_modified < BUF_OVERLAY_MODIFF (b)) | |
496e208e MR |
1528 | return Qnil; |
1529 | ||
1530 | if (NILP (line)) | |
1531 | { | |
1532 | i = w->cursor.vpos; | |
1533 | if (i < 0 || i >= w->current_matrix->nrows | |
1534 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
1535 | return Qnil; | |
1536 | max_y = window_text_bottom_y (w); | |
1537 | goto found_row; | |
1538 | } | |
1539 | ||
1540 | if (EQ (line, Qheader_line)) | |
1541 | { | |
1542 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) | |
1543 | return Qnil; | |
1544 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
1545 | if (!row->enabled_p) | |
1546 | return Qnil; | |
1547 | return list4 (make_number (row->height), | |
1548 | make_number (0), make_number (0), | |
1549 | make_number (0)); | |
1550 | } | |
1551 | ||
1552 | if (EQ (line, Qmode_line)) | |
1553 | { | |
1554 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); | |
1555 | if (!row->enabled_p) | |
1556 | return Qnil; | |
1557 | return list4 (make_number (row->height), | |
1558 | make_number (0), /* not accurate */ | |
1559 | make_number (WINDOW_HEADER_LINE_HEIGHT (w) | |
1560 | + window_text_bottom_y (w)), | |
1561 | make_number (0)); | |
1562 | } | |
1563 | ||
1564 | CHECK_NUMBER (line); | |
1565 | n = XINT (line); | |
1566 | ||
1567 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
1568 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
1569 | max_y = window_text_bottom_y (w); | |
1570 | i = 0; | |
1571 | ||
1572 | while ((n < 0 || i < n) | |
1573 | && row <= end_row && row->enabled_p | |
1574 | && row->y + row->height < max_y) | |
1575 | row++, i++; | |
1576 | ||
1577 | if (row > end_row || !row->enabled_p) | |
1578 | return Qnil; | |
1579 | ||
1580 | if (++n < 0) | |
1581 | { | |
1582 | if (-n > i) | |
1583 | return Qnil; | |
1584 | row += n; | |
1585 | i += n; | |
1586 | } | |
1587 | ||
1588 | found_row: | |
1589 | crop = max (0, (row->y + row->height) - max_y); | |
1590 | return list4 (make_number (row->height + min (0, row->y) - crop), | |
1591 | make_number (i), | |
1592 | make_number (row->y), | |
1593 | make_number (crop)); | |
1594 | } | |
d653c8cc | 1595 | |
a7ca3326 | 1596 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, |
d653c8cc MR |
1597 | 0, 1, 0, |
1598 | doc: /* Return non-nil when WINDOW is dedicated to its buffer. | |
12bb3111 | 1599 | More precisely, return the value assigned by the last call of |
7bfac547 MR |
1600 | `set-window-dedicated-p' for WINDOW. Return nil if that function was |
1601 | never called with WINDOW as its argument, or the value set by that | |
1602 | function was internally reset since its last call. WINDOW defaults to | |
1603 | the selected window. | |
1604 | ||
1605 | When a window is dedicated to its buffer, `display-buffer' will refrain | |
1606 | from displaying another buffer in it. `get-lru-window' and | |
1607 | `get-largest-window' treat dedicated windows specially. | |
1608 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1609 | `kill-buffer' can delete a dedicated window and the containing frame. | |
1610 | ||
1611 | Functions like `set-window-buffer' may change the buffer displayed by a | |
1612 | window, unless that window is "strongly" dedicated to its buffer, that | |
1613 | is the value returned by `window-dedicated-p' is t. */) | |
5842a27b | 1614 | (Lisp_Object window) |
7ab12479 | 1615 | { |
d3d50620 | 1616 | return decode_window (window)->dedicated; |
7ab12479 JB |
1617 | } |
1618 | ||
d207b766 RS |
1619 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1620 | Sset_window_dedicated_p, 2, 2, 0, | |
d653c8cc | 1621 | doc: /* Mark WINDOW as dedicated according to FLAG. |
496e208e MR |
1622 | WINDOW must be a live window and defaults to the selected one. FLAG |
1623 | non-nil means mark WINDOW as dedicated to its buffer. FLAG nil means | |
1624 | mark WINDOW as non-dedicated. Return FLAG. | |
d653c8cc | 1625 | |
7bfac547 MR |
1626 | When a window is dedicated to its buffer, `display-buffer' will refrain |
1627 | from displaying another buffer in it. `get-lru-window' and | |
1628 | `get-largest-window' treat dedicated windows specially. | |
496e208e MR |
1629 | `delete-windows-on', `replace-buffer-in-windows', `quit-window', |
1630 | `quit-restore-window' and `kill-buffer' can delete a dedicated window | |
1631 | and the containing frame. | |
7bfac547 MR |
1632 | |
1633 | As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to | |
1634 | its buffer. Functions like `set-window-buffer' may change the buffer | |
1635 | displayed by a window, unless that window is strongly dedicated to its | |
1636 | buffer. If and when `set-window-buffer' displays another buffer in a | |
496e208e | 1637 | window, it also makes sure that the window is no more dedicated. */) |
5842a27b | 1638 | (Lisp_Object window, Lisp_Object flag) |
7ab12479 | 1639 | { |
077288cf | 1640 | return WSET (decode_window (window), dedicated, flag); |
7ab12479 JB |
1641 | } |
1642 | ||
496e208e MR |
1643 | DEFUN ("window-prev-buffers", Fwindow_prev_buffers, Swindow_prev_buffers, |
1644 | 0, 1, 0, | |
1645 | doc: /* Return buffers previously shown in WINDOW. | |
1646 | WINDOW must be a live window and defaults to the selected one. | |
1647 | ||
94e0933e CY |
1648 | The return value is a list of elements (BUFFER WINDOW-START POS), |
1649 | where BUFFER is a buffer, WINDOW-START is the start position of the | |
1650 | window for that buffer, and POS is a window-specific point value. */) | |
496e208e MR |
1651 | (Lisp_Object window) |
1652 | { | |
d3d50620 | 1653 | return decode_window (window)->prev_buffers; |
496e208e MR |
1654 | } |
1655 | ||
1656 | DEFUN ("set-window-prev-buffers", Fset_window_prev_buffers, | |
1657 | Sset_window_prev_buffers, 2, 2, 0, | |
1658 | doc: /* Set WINDOW's previous buffers to PREV-BUFFERS. | |
94e0933e | 1659 | WINDOW must be a live window and defaults to the selected one. |
496e208e | 1660 | |
94e0933e CY |
1661 | PREV-BUFFERS should be a list of elements (BUFFER WINDOW-START POS), |
1662 | where BUFFER is a buffer, WINDOW-START is the start position of the | |
1663 | window for that buffer, and POS is a window-specific point value. */) | |
496e208e MR |
1664 | (Lisp_Object window, Lisp_Object prev_buffers) |
1665 | { | |
077288cf | 1666 | return WSET (decode_window (window), prev_buffers, prev_buffers); |
496e208e MR |
1667 | } |
1668 | ||
1669 | DEFUN ("window-next-buffers", Fwindow_next_buffers, Swindow_next_buffers, | |
1670 | 0, 1, 0, | |
1671 | doc: /* Return list of buffers recently re-shown in WINDOW. | |
1672 | WINDOW must be a live window and defaults to the selected one. */) | |
1673 | (Lisp_Object window) | |
1674 | { | |
d3d50620 | 1675 | return decode_window (window)->next_buffers; |
496e208e MR |
1676 | } |
1677 | ||
1678 | DEFUN ("set-window-next-buffers", Fset_window_next_buffers, | |
1679 | Sset_window_next_buffers, 2, 2, 0, | |
1680 | doc: /* Set WINDOW's next buffers to NEXT-BUFFERS. | |
94e0933e CY |
1681 | WINDOW must be a live window and defaults to the selected one. |
1682 | NEXT-BUFFERS should be a list of buffers. */) | |
496e208e MR |
1683 | (Lisp_Object window, Lisp_Object next_buffers) |
1684 | { | |
077288cf | 1685 | return WSET (decode_window (window), next_buffers, next_buffers); |
496e208e | 1686 | } |
d653c8cc | 1687 | |
cfbb2395 JB |
1688 | DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters, |
1689 | 0, 1, 0, | |
d653c8cc MR |
1690 | doc: /* Return the parameters of WINDOW and their values. |
1691 | WINDOW defaults to the selected window. The return value is a list of | |
87e68db4 | 1692 | elements of the form (PARAMETER . VALUE). */) |
5842a27b | 1693 | (Lisp_Object window) |
cfbb2395 | 1694 | { |
d3d50620 | 1695 | return Fcopy_alist (decode_any_window (window)->window_parameters); |
cfbb2395 JB |
1696 | } |
1697 | ||
1698 | DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter, | |
1699 | 2, 2, 0, | |
d653c8cc MR |
1700 | doc: /* Return WINDOW's value for PARAMETER. |
1701 | WINDOW defaults to the selected window. */) | |
5842a27b | 1702 | (Lisp_Object window, Lisp_Object parameter) |
cfbb2395 | 1703 | { |
927abf37 JB |
1704 | Lisp_Object result; |
1705 | ||
d3d50620 | 1706 | result = Fassq (parameter, decode_any_window (window)->window_parameters); |
927abf37 | 1707 | return CDR_SAFE (result); |
cfbb2395 JB |
1708 | } |
1709 | ||
cfbb2395 JB |
1710 | DEFUN ("set-window-parameter", Fset_window_parameter, |
1711 | Sset_window_parameter, 3, 3, 0, | |
d653c8cc MR |
1712 | doc: /* Set WINDOW's value of PARAMETER to VALUE. |
1713 | WINDOW defaults to the selected window. Return VALUE. */) | |
5842a27b | 1714 | (Lisp_Object window, Lisp_Object parameter, Lisp_Object value) |
cfbb2395 | 1715 | { |
496e208e | 1716 | register struct window *w = decode_any_window (window); |
cfbb2395 JB |
1717 | Lisp_Object old_alist_elt; |
1718 | ||
d3d50620 | 1719 | old_alist_elt = Fassq (parameter, w->window_parameters); |
12bb3111 | 1720 | if (NILP (old_alist_elt)) |
077288cf | 1721 | WSET (w, window_parameters, |
d3d50620 | 1722 | Fcons (Fcons (parameter, value), w->window_parameters)); |
cfbb2395 JB |
1723 | else |
1724 | Fsetcdr (old_alist_elt, value); | |
927abf37 | 1725 | return value; |
cfbb2395 JB |
1726 | } |
1727 | ||
7ab12479 JB |
1728 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, |
1729 | 0, 1, 0, | |
c85322d0 EZ |
1730 | doc: /* Return the display-table that WINDOW is using. |
1731 | WINDOW defaults to the selected window. */) | |
5842a27b | 1732 | (Lisp_Object window) |
7ab12479 | 1733 | { |
d3d50620 | 1734 | return decode_window (window)->display_table; |
7ab12479 JB |
1735 | } |
1736 | ||
5500c422 GM |
1737 | /* Get the display table for use on window W. This is either W's |
1738 | display table or W's buffer's display table. Ignore the specified | |
1739 | tables if they are not valid; if no valid table is specified, | |
1740 | return 0. */ | |
7ab12479 | 1741 | |
319315f1 | 1742 | struct Lisp_Char_Table * |
971de7fb | 1743 | window_display_table (struct window *w) |
7ab12479 | 1744 | { |
c756cdbe GM |
1745 | struct Lisp_Char_Table *dp = NULL; |
1746 | ||
d3d50620 DA |
1747 | if (DISP_TABLE_P (w->display_table)) |
1748 | dp = XCHAR_TABLE (w->display_table); | |
1749 | else if (BUFFERP (w->buffer)) | |
c756cdbe | 1750 | { |
d3d50620 | 1751 | struct buffer *b = XBUFFER (w->buffer); |
177c0ea7 | 1752 | |
4b4deea2 TT |
1753 | if (DISP_TABLE_P (BVAR (b, display_table))) |
1754 | dp = XCHAR_TABLE (BVAR (b, display_table)); | |
c756cdbe GM |
1755 | else if (DISP_TABLE_P (Vstandard_display_table)) |
1756 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1757 | } | |
171d003c | 1758 | |
c756cdbe | 1759 | return dp; |
7ab12479 JB |
1760 | } |
1761 | ||
3a2712f9 | 1762 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 | 1763 | doc: /* Set WINDOW's display-table to TABLE. */) |
5842a27b | 1764 | (register Lisp_Object window, Lisp_Object table) |
7ab12479 | 1765 | { |
077288cf | 1766 | return WSET (decode_window (window), display_table, table); |
7ab12479 JB |
1767 | } |
1768 | \f | |
562dd5e9 | 1769 | /* Record info on buffer window W is displaying |
7ab12479 | 1770 | when it is about to cease to display that buffer. */ |
dfcf069d | 1771 | static void |
971de7fb | 1772 | unshow_buffer (register struct window *w) |
7ab12479 | 1773 | { |
12cae7c0 | 1774 | Lisp_Object buf; |
b73ea88e | 1775 | struct buffer *b; |
7ab12479 | 1776 | |
d3d50620 | 1777 | buf = w->buffer; |
b73ea88e | 1778 | b = XBUFFER (buf); |
d3d50620 | 1779 | if (b != XMARKER (w->pointm)->buffer) |
7ab12479 JB |
1780 | abort (); |
1781 | ||
573f41ab | 1782 | #if 0 |
7ab12479 | 1783 | if (w == XWINDOW (selected_window) |
d3d50620 | 1784 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) |
7ab12479 JB |
1785 | /* Do this except when the selected window's buffer |
1786 | is being removed from some other window. */ | |
573f41ab RS |
1787 | #endif |
1788 | /* last_window_start records the start position that this buffer | |
1789 | had in the last window to be disconnected from it. | |
1790 | Now that this statement is unconditional, | |
1791 | it is possible for the buffer to be displayed in the | |
1792 | selected window, while last_window_start reflects another | |
1793 | window which was recently showing the same buffer. | |
1794 | Some people might say that might be a good thing. Let's see. */ | |
d3d50620 | 1795 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1796 | |
1797 | /* Point in the selected window's buffer | |
1798 | is actually stored in that buffer, and the window's pointm isn't used. | |
1799 | So don't clobber point in that buffer. */ | |
d3d50620 | 1800 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
719eaeb1 | 1801 | /* This line helps to fix Horsley's testbug.el bug. */ |
4b4deea2 TT |
1802 | && !(WINDOWP (BVAR (b, last_selected_window)) |
1803 | && w != XWINDOW (BVAR (b, last_selected_window)) | |
d3d50620 | 1804 | && EQ (buf, XWINDOW (BVAR (b, last_selected_window))->buffer))) |
b73ea88e RS |
1805 | temp_set_point_both (b, |
1806 | clip_to_bounds (BUF_BEGV (b), | |
d3d50620 | 1807 | XMARKER (w->pointm)->charpos, |
b73ea88e RS |
1808 | BUF_ZV (b)), |
1809 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
d3d50620 | 1810 | marker_byte_position (w->pointm), |
b73ea88e | 1811 | BUF_ZV_BYTE (b))); |
177c0ea7 | 1812 | |
4b4deea2 TT |
1813 | if (WINDOWP (BVAR (b, last_selected_window)) |
1814 | && w == XWINDOW (BVAR (b, last_selected_window))) | |
4c31be61 | 1815 | BSET (b, last_selected_window, Qnil); |
7ab12479 JB |
1816 | } |
1817 | ||
1a13852e MR |
1818 | /* Put NEW into the window structure in place of OLD. SETFLAG zero |
1819 | means change window structure only. Otherwise store geometry and | |
1820 | other settings as well. */ | |
dfcf069d | 1821 | static void |
1a13852e | 1822 | replace_window (Lisp_Object old, Lisp_Object new, int setflag) |
7ab12479 JB |
1823 | { |
1824 | register Lisp_Object tem; | |
1a13852e | 1825 | register struct window *o = XWINDOW (old), *n = XWINDOW (new); |
7ab12479 | 1826 | |
1a13852e MR |
1827 | /* If OLD is its frame's root window, then NEW is the new |
1828 | root window for that frame. */ | |
d3d50620 DA |
1829 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
1830 | FSET (XFRAME (o->frame), root_window, new); | |
077288cf DA |
1831 | |
1832 | if (setflag) | |
1833 | { | |
d3d50620 DA |
1834 | WSET (n, left_col, o->left_col); |
1835 | WSET (n, top_line, o->top_line); | |
1836 | WSET (n, total_cols, o->total_cols); | |
1837 | WSET (n, total_lines, o->total_lines); | |
1838 | WSET (n, normal_cols, o->normal_cols); | |
077288cf | 1839 | WSET (o, normal_cols, make_float (1.0)); |
d3d50620 | 1840 | WSET (n, normal_lines, o->normal_lines); |
077288cf | 1841 | WSET (o, normal_lines, make_float (1.0)); |
1a13852e MR |
1842 | n->desired_matrix = n->current_matrix = 0; |
1843 | n->vscroll = 0; | |
1844 | memset (&n->cursor, 0, sizeof (n->cursor)); | |
1845 | memset (&n->last_cursor, 0, sizeof (n->last_cursor)); | |
1846 | memset (&n->phys_cursor, 0, sizeof (n->phys_cursor)); | |
1847 | n->phys_cursor_type = -1; | |
1848 | n->phys_cursor_width = -1; | |
1849 | n->must_be_updated_p = 0; | |
1850 | n->pseudo_window_p = 0; | |
077288cf DA |
1851 | WSET (n, window_end_vpos, make_number (0)); |
1852 | WSET (n, window_end_pos, make_number (0)); | |
1853 | WSET (n, window_end_valid, Qnil); | |
1a13852e | 1854 | n->frozen_window_start_p = 0; |
1a13852e MR |
1855 | } |
1856 | ||
d3d50620 | 1857 | tem = o->next; |
077288cf | 1858 | WSET (n, next, tem); |
265a9e55 | 1859 | if (!NILP (tem)) |
077288cf | 1860 | WSET (XWINDOW (tem), prev, new); |
7ab12479 | 1861 | |
d3d50620 | 1862 | tem = o->prev; |
077288cf | 1863 | WSET (n, prev, tem); |
265a9e55 | 1864 | if (!NILP (tem)) |
077288cf | 1865 | WSET (XWINDOW (tem), next, new); |
7ab12479 | 1866 | |
d3d50620 | 1867 | tem = o->parent; |
077288cf | 1868 | WSET (n, parent, tem); |
265a9e55 | 1869 | if (!NILP (tem)) |
7ab12479 | 1870 | { |
d3d50620 | 1871 | if (EQ (XWINDOW (tem)->vchild, old)) |
077288cf | 1872 | WSET (XWINDOW (tem), vchild, new); |
d3d50620 | 1873 | if (EQ (XWINDOW (tem)->hchild, old)) |
077288cf | 1874 | WSET (XWINDOW (tem), hchild, new); |
7ab12479 | 1875 | } |
1a13852e MR |
1876 | } |
1877 | ||
1878 | /* If window WINDOW and its parent window are iso-combined, merge | |
1879 | WINDOW's children into those of its parent window and mark WINDOW as | |
1880 | deleted. */ | |
1881 | ||
1882 | static void | |
1883 | recombine_windows (Lisp_Object window) | |
1884 | { | |
1885 | struct window *w, *p, *c; | |
1886 | Lisp_Object parent, child; | |
1887 | int horflag; | |
1888 | ||
1889 | w = XWINDOW (window); | |
d3d50620 DA |
1890 | parent = w->parent; |
1891 | if (!NILP (parent) && NILP (w->combination_limit)) | |
1a13852e MR |
1892 | { |
1893 | p = XWINDOW (parent); | |
d3d50620 DA |
1894 | if (((!NILP (p->vchild) && !NILP (w->vchild)) |
1895 | || (!NILP (p->hchild) && !NILP (w->hchild)))) | |
1a13852e MR |
1896 | /* WINDOW and PARENT are both either a vertical or a horizontal |
1897 | combination. */ | |
1898 | { | |
d3d50620 DA |
1899 | horflag = NILP (w->vchild); |
1900 | child = horflag ? w->hchild : w->vchild; | |
1a13852e MR |
1901 | c = XWINDOW (child); |
1902 | ||
1903 | /* Splice WINDOW's children into its parent's children and | |
1904 | assign new normal sizes. */ | |
d3d50620 | 1905 | if (NILP (w->prev)) |
1a13852e | 1906 | if (horflag) |
077288cf | 1907 | WSET (p, hchild, child); |
1a13852e | 1908 | else |
077288cf | 1909 | WSET (p, vchild, child); |
1a13852e MR |
1910 | else |
1911 | { | |
d3d50620 DA |
1912 | WSET (c, prev, w->prev); |
1913 | WSET (XWINDOW (w->prev), next, child); | |
1a13852e MR |
1914 | } |
1915 | ||
1916 | while (c) | |
1917 | { | |
077288cf | 1918 | WSET (c, parent, parent); |
1a13852e MR |
1919 | |
1920 | if (horflag) | |
077288cf | 1921 | WSET (c, normal_cols, |
d3d50620 DA |
1922 | make_float (XFLOATINT (c->total_cols) |
1923 | / XFLOATINT (p->total_cols))); | |
1a13852e | 1924 | else |
077288cf | 1925 | WSET (c, normal_lines, |
d3d50620 DA |
1926 | make_float (XFLOATINT (c->total_lines) |
1927 | / XFLOATINT (p->total_lines))); | |
1a13852e | 1928 | |
d3d50620 | 1929 | if (NILP (c->next)) |
1a13852e | 1930 | { |
d3d50620 | 1931 | if (!NILP (w->next)) |
1a13852e | 1932 | { |
d3d50620 DA |
1933 | WSET (c, next, w->next); |
1934 | WSET (XWINDOW (c->next), prev, child); | |
1a13852e MR |
1935 | } |
1936 | ||
1937 | c = 0; | |
1938 | } | |
1939 | else | |
1940 | { | |
d3d50620 | 1941 | child = c->next; |
1a13852e MR |
1942 | c = XWINDOW (child); |
1943 | } | |
1944 | } | |
7ab12479 | 1945 | |
1a13852e | 1946 | /* WINDOW can be deleted now. */ |
077288cf DA |
1947 | WSET (w, vchild, Qnil); |
1948 | WSET (w, hchild, Qnil); | |
1a13852e MR |
1949 | } |
1950 | } | |
7ab12479 | 1951 | } |
6198ccd0 MR |
1952 | |
1953 | /* If WINDOW can be deleted, delete it. */ | |
4475bec4 | 1954 | static void |
6198ccd0 MR |
1955 | delete_deletable_window (Lisp_Object window) |
1956 | { | |
1957 | if (!NILP (call1 (Qwindow_deletable_p, window))) | |
1958 | call1 (Qdelete_window, window); | |
1959 | } | |
1a13852e | 1960 | \f |
67492200 GM |
1961 | /*********************************************************************** |
1962 | Window List | |
1963 | ***********************************************************************/ | |
1964 | ||
f95464e4 GM |
1965 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1966 | pointer. This is a callback function for foreach_window, used in | |
496e208e | 1967 | the window_list function. */ |
67492200 GM |
1968 | |
1969 | static int | |
971de7fb | 1970 | add_window_to_list (struct window *w, void *user_data) |
67492200 | 1971 | { |
f95464e4 | 1972 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1973 | Lisp_Object window; |
1974 | XSETWINDOW (window, w); | |
212116d6 | 1975 | *list = Fcons (window, *list); |
67492200 GM |
1976 | return 1; |
1977 | } | |
1978 | ||
1979 | ||
1980 | /* Return a list of all windows, for use by next_window. If | |
1981 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1982 | list, cache it in Vwindow_list, and return that. */ | |
1983 | ||
1984 | static Lisp_Object | |
971de7fb | 1985 | window_list (void) |
67492200 GM |
1986 | { |
1987 | if (!CONSP (Vwindow_list)) | |
1988 | { | |
1989 | Lisp_Object tail; | |
212116d6 | 1990 | |
67492200 GM |
1991 | Vwindow_list = Qnil; |
1992 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1993 | { |
1994 | Lisp_Object args[2]; | |
1995 | ||
1996 | /* We are visiting windows in canonical order, and add | |
1997 | new windows at the front of args[1], which means we | |
1998 | have to reverse this list at the end. */ | |
1999 | args[1] = Qnil; | |
2000 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
2001 | args[0] = Vwindow_list; | |
2002 | args[1] = Fnreverse (args[1]); | |
2003 | Vwindow_list = Fnconc (2, args); | |
2004 | } | |
67492200 | 2005 | } |
177c0ea7 | 2006 | |
67492200 GM |
2007 | return Vwindow_list; |
2008 | } | |
2009 | ||
2010 | ||
118ea242 GM |
2011 | /* Value is non-zero if WINDOW satisfies the constraints given by |
2012 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 2013 | |
118ea242 GM |
2014 | MINIBUF t means WINDOW may be minibuffer windows. |
2015 | `lambda' means WINDOW may not be a minibuffer window. | |
2016 | a window means a specific minibuffer window | |
67492200 | 2017 | |
118ea242 GM |
2018 | ALL_FRAMES t means search all frames, |
2019 | nil means search just current frame, | |
aa248733 MS |
2020 | `visible' means search just visible frames on the |
2021 | current terminal, | |
2022 | 0 means search visible and iconified frames on the | |
2023 | current terminal, | |
118ea242 GM |
2024 | a window means search the frame that window belongs to, |
2025 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
2026 | |
2027 | static int | |
971de7fb | 2028 | candidate_window_p (Lisp_Object window, Lisp_Object owindow, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 GM |
2029 | { |
2030 | struct window *w = XWINDOW (window); | |
d3d50620 | 2031 | struct frame *f = XFRAME (w->frame); |
67492200 GM |
2032 | int candidate_p = 1; |
2033 | ||
d3d50620 | 2034 | if (!BUFFERP (w->buffer)) |
67492200 GM |
2035 | candidate_p = 0; |
2036 | else if (MINI_WINDOW_P (w) | |
2037 | && (EQ (minibuf, Qlambda) | |
2038 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
2039 | { | |
2040 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
2041 | If it is a window, consider only that one. */ | |
2042 | candidate_p = 0; | |
2043 | } | |
118ea242 GM |
2044 | else if (EQ (all_frames, Qt)) |
2045 | candidate_p = 1; | |
67492200 | 2046 | else if (NILP (all_frames)) |
118ea242 | 2047 | { |
a54e2c05 | 2048 | eassert (WINDOWP (owindow)); |
d3d50620 | 2049 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); |
118ea242 | 2050 | } |
67492200 GM |
2051 | else if (EQ (all_frames, Qvisible)) |
2052 | { | |
2053 | FRAME_SAMPLE_VISIBILITY (f); | |
de509a60 | 2054 | candidate_p = FRAME_VISIBLE_P (f) |
d3d50620 | 2055 | && (FRAME_TERMINAL (XFRAME (w->frame)) |
de509a60 SM |
2056 | == FRAME_TERMINAL (XFRAME (selected_frame))); |
2057 | ||
67492200 GM |
2058 | } |
2059 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
2060 | { | |
2061 | FRAME_SAMPLE_VISIBILITY (f); | |
ca2d5566 SM |
2062 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
2063 | #ifdef HAVE_X_WINDOWS | |
2064 | /* Yuck!! If we've just created the frame and the | |
2065 | window-manager requested the user to place it | |
2066 | manually, the window may still not be considered | |
2067 | `visible'. I'd argue it should be at least | |
2068 | something like `iconified', but don't know how to do | |
2069 | that yet. --Stef */ | |
2070 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
2071 | && !f->output_data.x->has_been_visible) | |
2072 | #endif | |
de509a60 | 2073 | ) |
d3d50620 | 2074 | && (FRAME_TERMINAL (XFRAME (w->frame)) |
de509a60 | 2075 | == FRAME_TERMINAL (XFRAME (selected_frame))); |
67492200 | 2076 | } |
67492200 GM |
2077 | else if (WINDOWP (all_frames)) |
2078 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
d3d50620 DA |
2079 | || EQ (XWINDOW (all_frames)->frame, w->frame) |
2080 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 | 2081 | else if (FRAMEP (all_frames)) |
d3d50620 | 2082 | candidate_p = EQ (all_frames, w->frame); |
67492200 GM |
2083 | |
2084 | return candidate_p; | |
2085 | } | |
2086 | ||
2087 | ||
2088 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
aa248733 MS |
2089 | Fwindow_list. See candidate_window_p for the meaning of WINDOW, |
2090 | MINIBUF, and ALL_FRAMES. */ | |
67492200 GM |
2091 | |
2092 | static void | |
971de7fb | 2093 | decode_next_window_args (Lisp_Object *window, Lisp_Object *minibuf, Lisp_Object *all_frames) |
67492200 GM |
2094 | { |
2095 | if (NILP (*window)) | |
2096 | *window = selected_window; | |
2097 | else | |
b7826503 | 2098 | CHECK_LIVE_WINDOW (*window); |
177c0ea7 | 2099 | |
67492200 GM |
2100 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
2101 | does. */ | |
2102 | if (NILP (*minibuf)) | |
2103 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
2104 | else if (!EQ (*minibuf, Qt)) | |
2105 | *minibuf = Qlambda; | |
177c0ea7 | 2106 | |
67492200 GM |
2107 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
2108 | => count none of them, or a specific minibuffer window (the | |
2109 | active one) to count. */ | |
2110 | ||
2111 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
2112 | if (NILP (*all_frames)) | |
3a45383a DA |
2113 | *all_frames |
2114 | = (!EQ (*minibuf, Qlambda) | |
d3d50620 | 2115 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) |
3a45383a | 2116 | : Qnil); |
67492200 GM |
2117 | else if (EQ (*all_frames, Qvisible)) |
2118 | ; | |
0f8fe9a2 | 2119 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
2120 | ; |
2121 | else if (FRAMEP (*all_frames)) | |
2122 | ; | |
2123 | else if (!EQ (*all_frames, Qt)) | |
2124 | *all_frames = Qnil; | |
67492200 GM |
2125 | } |
2126 | ||
2127 | ||
ab6d1131 | 2128 | /* Return the next or previous window of WINDOW in cyclic ordering |
67492200 GM |
2129 | of windows. NEXT_P non-zero means return the next window. See the |
2130 | documentation string of next-window for the meaning of MINIBUF and | |
2131 | ALL_FRAMES. */ | |
2132 | ||
2133 | static Lisp_Object | |
971de7fb | 2134 | next_window (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames, int next_p) |
67492200 GM |
2135 | { |
2136 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 2137 | |
67492200 GM |
2138 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
2139 | return the first window on the frame. */ | |
2140 | if (FRAMEP (all_frames) | |
d3d50620 | 2141 | && !EQ (all_frames, XWINDOW (window)->frame)) |
67492200 | 2142 | return Fframe_first_window (all_frames); |
177c0ea7 | 2143 | |
212116d6 | 2144 | if (next_p) |
67492200 GM |
2145 | { |
2146 | Lisp_Object list; | |
177c0ea7 | 2147 | |
67492200 GM |
2148 | /* Find WINDOW in the list of all windows. */ |
2149 | list = Fmemq (window, window_list ()); | |
2150 | ||
2151 | /* Scan forward from WINDOW to the end of the window list. */ | |
2152 | if (CONSP (list)) | |
2153 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 2154 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2155 | break; |
2156 | ||
2157 | /* Scan from the start of the window list up to WINDOW. */ | |
2158 | if (!CONSP (list)) | |
2159 | for (list = Vwindow_list; | |
2160 | CONSP (list) && !EQ (XCAR (list), window); | |
2161 | list = XCDR (list)) | |
118ea242 | 2162 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2163 | break; |
2164 | ||
2165 | if (CONSP (list)) | |
2166 | window = XCAR (list); | |
2167 | } | |
2168 | else | |
2169 | { | |
2170 | Lisp_Object candidate, list; | |
177c0ea7 | 2171 | |
67492200 GM |
2172 | /* Scan through the list of windows for candidates. If there are |
2173 | candidate windows in front of WINDOW, the last one of these | |
2174 | is the one we want. If there are candidates following WINDOW | |
2175 | in the list, again the last one of these is the one we want. */ | |
2176 | candidate = Qnil; | |
2177 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
2178 | { | |
2179 | if (EQ (XCAR (list), window)) | |
2180 | { | |
2181 | if (WINDOWP (candidate)) | |
2182 | break; | |
2183 | } | |
118ea242 GM |
2184 | else if (candidate_window_p (XCAR (list), window, minibuf, |
2185 | all_frames)) | |
67492200 GM |
2186 | candidate = XCAR (list); |
2187 | } | |
2188 | ||
2189 | if (WINDOWP (candidate)) | |
2190 | window = candidate; | |
2191 | } | |
2192 | ||
2193 | return window; | |
2194 | } | |
7ab12479 | 2195 | |
7ab12479 | 2196 | |
a7ca3326 | 2197 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
a9b9b7f5 | 2198 | doc: /* Return live window after WINDOW in the cyclic ordering of windows. |
87e68db4 | 2199 | WINDOW must be a live window and defaults to the selected one. The |
9397e56f MR |
2200 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to |
2201 | consider. | |
2202 | ||
2203 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2204 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2205 | even if the minibuffer is not active. Any other value means do not | |
2206 | consider the minibuffer window even if the minibuffer is active. | |
2207 | ||
2208 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2209 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2210 | minibuffer counts, consider all windows on all frames that share that | |
2211 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2212 | meanings: | |
2213 | ||
2214 | - t means consider all windows on all existing frames. | |
2215 | ||
2216 | - `visible' means consider all windows on all visible frames. | |
2217 | ||
2218 | - 0 (the number zero) means consider all windows on all visible and | |
2219 | iconified frames. | |
2220 | ||
2221 | - A frame means consider all windows on that frame only. | |
ab6d1131 | 2222 | |
ab6d1131 | 2223 | Anything else means consider all windows on WINDOW's frame and no |
9397e56f | 2224 | others. |
fdb82f93 PJ |
2225 | |
2226 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
2227 | `next-window' to iterate through the entire cycle of acceptable | |
2228 | windows, eventually ending up back at the window you started with. | |
2229 | `previous-window' traverses the same cycle, in the reverse order. */) | |
5842a27b | 2230 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2231 | { |
67492200 | 2232 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
2233 | } |
2234 | ||
67492200 | 2235 | |
26f6279d | 2236 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
a9b9b7f5 | 2237 | doc: /* Return live window before WINDOW in the cyclic ordering of windows. |
9397e56f MR |
2238 | WINDOW must be a live window and defaults to the selected one. The |
2239 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to | |
2240 | consider. | |
2241 | ||
2242 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2243 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2244 | even if the minibuffer is not active. Any other value means do not | |
2245 | consider the minibuffer window even if the minibuffer is active. | |
2246 | ||
2247 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2248 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2249 | minibuffer counts, consider all windows on all frames that share that | |
2250 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2251 | meanings: | |
2252 | ||
2253 | - t means consider all windows on all existing frames. | |
2254 | ||
2255 | - `visible' means consider all windows on all visible frames. | |
2256 | ||
2257 | - 0 (the number zero) means consider all windows on all visible and | |
2258 | iconified frames. | |
2259 | ||
2260 | - A frame means consider all windows on that frame only. | |
2261 | ||
2262 | Anything else means consider all windows on WINDOW's frame and no | |
2263 | others. | |
ab6d1131 MR |
2264 | |
2265 | If you use consistent values for MINIBUF and ALL-FRAMES, you can | |
2266 | use `previous-window' to iterate through the entire cycle of | |
2267 | acceptable windows, eventually ending up back at the window you | |
2268 | started with. `next-window' traverses the same cycle, in the | |
2269 | reverse order. */) | |
5842a27b | 2270 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2271 | { |
67492200 | 2272 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2273 | } |
2274 | ||
67492200 | 2275 | |
ab6d1131 | 2276 | /* Return a list of windows in cyclic ordering. Arguments are like |
cd2904bd GM |
2277 | for `next-window'. */ |
2278 | ||
2279 | static Lisp_Object | |
971de7fb | 2280 | window_list_1 (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 | 2281 | { |
403de3b4 | 2282 | Lisp_Object tail, list, rest; |
67492200 GM |
2283 | |
2284 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2285 | list = Qnil; | |
177c0ea7 | 2286 | |
67492200 | 2287 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2288 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2289 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2290 | |
403de3b4 RS |
2291 | /* Rotate the list to start with WINDOW. */ |
2292 | list = Fnreverse (list); | |
2293 | rest = Fmemq (window, list); | |
2294 | if (!NILP (rest) && !EQ (rest, list)) | |
2295 | { | |
1725a7c9 | 2296 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2297 | ; |
2298 | XSETCDR (tail, Qnil); | |
2299 | list = nconc2 (rest, list); | |
2300 | } | |
2301 | return list; | |
67492200 GM |
2302 | } |
2303 | ||
2304 | ||
abde8f8c MR |
2305 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, |
2306 | doc: /* Return a list of windows on FRAME, starting with WINDOW. | |
2307 | FRAME nil or omitted means use the selected frame. | |
49745b39 | 2308 | WINDOW nil or omitted means use the window selected within FRAME. |
abde8f8c MR |
2309 | MINIBUF t means include the minibuffer window, even if it isn't active. |
2310 | MINIBUF nil or omitted means include the minibuffer window only | |
2311 | if it's active. | |
2312 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2313 | (Lisp_Object frame, Lisp_Object minibuf, Lisp_Object window) | |
2314 | { | |
2315 | if (NILP (window)) | |
e69b0960 | 2316 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
abde8f8c MR |
2317 | CHECK_WINDOW (window); |
2318 | if (NILP (frame)) | |
2319 | frame = selected_frame; | |
2320 | ||
d3d50620 | 2321 | if (!EQ (frame, XWINDOW (window)->frame)) |
abde8f8c MR |
2322 | error ("Window is on a different frame"); |
2323 | ||
2324 | return window_list_1 (window, minibuf, frame); | |
2325 | } | |
2326 | ||
2327 | ||
1a13852e MR |
2328 | DEFUN ("window-list-1", Fwindow_list_1, Swindow_list_1, 0, 3, 0, |
2329 | doc: /* Return a list of all live windows. | |
2330 | WINDOW specifies the first window to list and defaults to the selected | |
2331 | window. | |
2332 | ||
2333 | Optional argument MINIBUF nil or omitted means consider the minibuffer | |
2334 | window only if the minibuffer is active. MINIBUF t means consider the | |
2335 | minibuffer window even if the minibuffer is not active. Any other value | |
2336 | means do not consider the minibuffer window even if the minibuffer is | |
2337 | active. | |
2338 | ||
2339 | Optional argument ALL-FRAMES nil or omitted means consider all windows | |
2340 | on WINDOW's frame, plus the minibuffer window if specified by the | |
2341 | MINIBUF argument. If the minibuffer counts, consider all windows on all | |
2342 | frames that share that minibuffer too. The following non-nil values of | |
2343 | ALL-FRAMES have special meanings: | |
2344 | ||
2345 | - t means consider all windows on all existing frames. | |
2346 | ||
2347 | - `visible' means consider all windows on all visible frames. | |
2348 | ||
2349 | - 0 (the number zero) means consider all windows on all visible and | |
2350 | iconified frames. | |
2351 | ||
2352 | - A frame means consider all windows on that frame only. | |
2353 | ||
2354 | Anything else means consider all windows on WINDOW's frame and no | |
2355 | others. | |
2356 | ||
2357 | If WINDOW is not on the list of windows returned, some other window will | |
8350f087 | 2358 | be listed first but no error is signaled. */) |
1a13852e MR |
2359 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
2360 | { | |
2361 | return window_list_1 (window, minibuf, all_frames); | |
2362 | } | |
7ab12479 JB |
2363 | \f |
2364 | /* Look at all windows, performing an operation specified by TYPE | |
2365 | with argument OBJ. | |
75d8f668 | 2366 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2367 | Qnil, look at just the selected frame; |
89bca612 | 2368 | Qvisible, look at visible frames; |
75d8f668 | 2369 | a frame, just look at windows on that frame. |
85fe3b5e | 2370 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2371 | |
2372 | enum window_loop | |
2373 | { | |
2374 | WINDOW_LOOP_UNUSED, | |
9397e56f MR |
2375 | GET_BUFFER_WINDOW, /* Arg is buffer */ |
2376 | REPLACE_BUFFER_IN_WINDOWS_SAFELY, /* Arg is buffer */ | |
2377 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ | |
3f8ab7bd | 2378 | CHECK_ALL_WINDOWS |
7ab12479 JB |
2379 | }; |
2380 | ||
2381 | static Lisp_Object | |
971de7fb | 2382 | window_loop (enum window_loop type, Lisp_Object obj, int mini, Lisp_Object frames) |
7ab12479 | 2383 | { |
118ea242 | 2384 | Lisp_Object window, windows, best_window, frame_arg; |
9397e56f | 2385 | int frame_best_window_flag = 0; |
118ea242 | 2386 | struct frame *f; |
ffdc852d | 2387 | struct gcpro gcpro1; |
177c0ea7 | 2388 | |
44fa5b1e JB |
2389 | /* If we're only looping through windows on a particular frame, |
2390 | frame points to that frame. If we're looping through windows | |
2391 | on all frames, frame is 0. */ | |
2392 | if (FRAMEP (frames)) | |
118ea242 | 2393 | f = XFRAME (frames); |
44fa5b1e | 2394 | else if (NILP (frames)) |
118ea242 | 2395 | f = SELECTED_FRAME (); |
7ab12479 | 2396 | else |
118ea242 | 2397 | f = NULL; |
177c0ea7 | 2398 | |
118ea242 | 2399 | if (f) |
89bca612 | 2400 | frame_arg = Qlambda; |
0f8fe9a2 | 2401 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2402 | frame_arg = frames; |
89bca612 RS |
2403 | else if (EQ (frames, Qvisible)) |
2404 | frame_arg = frames; | |
118ea242 GM |
2405 | else |
2406 | frame_arg = Qt; | |
7ab12479 | 2407 | |
89bca612 RS |
2408 | /* frame_arg is Qlambda to stick to one frame, |
2409 | Qvisible to consider all visible frames, | |
2410 | or Qt otherwise. */ | |
2411 | ||
7ab12479 | 2412 | /* Pick a window to start with. */ |
017b2bad | 2413 | if (WINDOWP (obj)) |
118ea242 GM |
2414 | window = obj; |
2415 | else if (f) | |
2416 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2417 | else |
118ea242 | 2418 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2419 | |
cd2904bd | 2420 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2421 | GCPRO1 (windows); |
7ab12479 | 2422 | best_window = Qnil; |
118ea242 | 2423 | |
e67a1dea | 2424 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2425 | { |
118ea242 | 2426 | struct window *w; |
177c0ea7 | 2427 | |
118ea242 GM |
2428 | window = XCAR (windows); |
2429 | w = XWINDOW (window); | |
177c0ea7 | 2430 | |
118ea242 GM |
2431 | /* Note that we do not pay attention here to whether the frame |
2432 | is visible, since Fwindow_list skips non-visible frames if | |
2433 | that is desired, under the control of frame_arg. */ | |
2434 | if (!MINI_WINDOW_P (w) | |
9397e56f MR |
2435 | /* For REPLACE_BUFFER_IN_WINDOWS_SAFELY, we must always |
2436 | consider all windows. */ | |
2437 | || type == REPLACE_BUFFER_IN_WINDOWS_SAFELY | |
7ab12479 JB |
2438 | || (mini && minibuf_level > 0)) |
2439 | switch (type) | |
2440 | { | |
2441 | case GET_BUFFER_WINDOW: | |
d3d50620 | 2442 | if (EQ (w->buffer, obj) |
9397e56f MR |
2443 | /* Don't find any minibuffer window except the one that |
2444 | is currently in use. */ | |
2445 | && (MINI_WINDOW_P (w) ? EQ (window, minibuf_window) : 1)) | |
118ea242 | 2446 | { |
9397e56f MR |
2447 | if (EQ (window, selected_window)) |
2448 | /* Preferably return the selected window. */ | |
ca2d5566 | 2449 | RETURN_UNGCPRO (window); |
d3d50620 | 2450 | else if (EQ (XWINDOW (window)->frame, selected_frame) |
9397e56f MR |
2451 | && !frame_best_window_flag) |
2452 | /* Prefer windows on the current frame (but don't | |
2453 | choose another one if we have one already). */ | |
118ea242 | 2454 | { |
9397e56f MR |
2455 | best_window = window; |
2456 | frame_best_window_flag = 1; | |
7ab12479 | 2457 | } |
9397e56f MR |
2458 | else if (NILP (best_window)) |
2459 | best_window = window; | |
7ab12479 JB |
2460 | } |
2461 | break; | |
2462 | ||
9397e56f MR |
2463 | case REPLACE_BUFFER_IN_WINDOWS_SAFELY: |
2464 | /* We could simply check whether the buffer shown by window | |
2465 | is live, and show another buffer in case it isn't. */ | |
d3d50620 | 2466 | if (EQ (w->buffer, obj)) |
7ab12479 | 2467 | { |
9397e56f | 2468 | /* Undedicate WINDOW. */ |
077288cf | 2469 | WSET (w, dedicated, Qnil); |
9397e56f MR |
2470 | /* Make WINDOW show the buffer returned by |
2471 | other_buffer_safely, don't run any hooks. */ | |
2472 | set_window_buffer | |
d3d50620 | 2473 | (window, other_buffer_safely (w->buffer), 0, 0); |
9397e56f MR |
2474 | /* If WINDOW is the selected window, make its buffer |
2475 | current. But do so only if the window shows the | |
2476 | current buffer (Bug#6454). */ | |
2477 | if (EQ (window, selected_window) | |
d3d50620 DA |
2478 | && XBUFFER (w->buffer) == current_buffer) |
2479 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2480 | } |
2481 | break; | |
3f8ab7bd | 2482 | |
6b61353c | 2483 | case REDISPLAY_BUFFER_WINDOWS: |
d3d50620 | 2484 | if (EQ (w->buffer, obj)) |
6b61353c KH |
2485 | { |
2486 | mark_window_display_accurate (window, 0); | |
c98ff5dd | 2487 | w->update_mode_line = 1; |
6b61353c KH |
2488 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; |
2489 | ++update_mode_lines; | |
2490 | best_window = window; | |
2491 | } | |
2492 | break; | |
2493 | ||
3f8ab7bd RS |
2494 | /* Check for a window that has a killed buffer. */ |
2495 | case CHECK_ALL_WINDOWS: | |
d3d50620 DA |
2496 | if (! NILP (w->buffer) |
2497 | && NILP (BVAR (XBUFFER (w->buffer), name))) | |
3f8ab7bd | 2498 | abort (); |
118ea242 | 2499 | break; |
6bbd7a29 GM |
2500 | |
2501 | case WINDOW_LOOP_UNUSED: | |
2502 | break; | |
7ab12479 | 2503 | } |
7ab12479 | 2504 | } |
7ab12479 | 2505 | |
118ea242 | 2506 | UNGCPRO; |
7ab12479 | 2507 | return best_window; |
37962e60 | 2508 | } |
605be8af | 2509 | |
3f8ab7bd RS |
2510 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2511 | ||
e3b27b31 | 2512 | extern void check_all_windows (void) EXTERNALLY_VISIBLE; |
233a4a2c | 2513 | void |
971de7fb | 2514 | check_all_windows (void) |
3f8ab7bd RS |
2515 | { |
2516 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2517 | } | |
2518 | ||
a7ca3326 | 2519 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 0, 2, 0, |
fec89261 | 2520 | doc: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none. |
496e208e MR |
2521 | BUFFER-OR-NAME may be a buffer or a buffer name and defaults to |
2522 | the current buffer. | |
2523 | ||
2524 | The optional argument ALL-FRAMES specifies the frames to consider: | |
2525 | ||
2526 | - t means consider all windows on all existing frames. | |
2527 | ||
2528 | - `visible' means consider all windows on all visible frames. | |
2529 | ||
2530 | - 0 (the number zero) means consider all windows on all visible | |
2531 | and iconified frames. | |
2532 | ||
2533 | - A frame means consider all windows on that frame only. | |
2534 | ||
2535 | Any other value of ALL-FRAMES means consider all windows on the | |
2536 | selected frame and no others. */) | |
2537 | (Lisp_Object buffer_or_name, Lisp_Object all_frames) | |
7ab12479 | 2538 | { |
fec89261 MR |
2539 | Lisp_Object buffer; |
2540 | ||
2541 | if (NILP (buffer_or_name)) | |
2542 | buffer = Fcurrent_buffer (); | |
2543 | else | |
2544 | buffer = Fget_buffer (buffer_or_name); | |
2545 | ||
017b2bad | 2546 | if (BUFFERP (buffer)) |
496e208e | 2547 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, all_frames); |
7ab12479 JB |
2548 | else |
2549 | return Qnil; | |
2550 | } | |
2551 | ||
4b66faf3 | 2552 | static Lisp_Object |
1a13852e MR |
2553 | resize_root_window (Lisp_Object window, Lisp_Object delta, Lisp_Object horizontal, Lisp_Object ignore) |
2554 | { | |
5386012d | 2555 | return call4 (Qwindow_resize_root_window, window, delta, horizontal, ignore); |
1a13852e MR |
2556 | } |
2557 | ||
2558 | ||
2559 | DEFUN ("delete-other-windows-internal", Fdelete_other_windows_internal, | |
2560 | Sdelete_other_windows_internal, 0, 2, "", | |
2561 | doc: /* Make WINDOW fill its frame. | |
2562 | Only the frame WINDOW is on is affected. WINDOW may be any window and | |
2563 | defaults to the selected one. | |
2564 | ||
be7f5545 MR |
2565 | Optional argument ROOT, if non-nil, must specify an internal window such |
2566 | that WINDOW is in its window subtree. If this is the case, replace ROOT | |
2567 | by WINDOW and leave alone any windows not part of ROOT's subtree. | |
1a13852e MR |
2568 | |
2569 | When WINDOW is live try to reduce display jumps by keeping the text | |
2570 | previously visible in WINDOW in the same place on the frame. Doing this | |
2571 | depends on the value of (window-start WINDOW), so if calling this | |
2572 | function in a program gives strange scrolling, make sure the | |
2573 | window-start value is reasonable when this function is called. */) | |
2574 | (Lisp_Object window, Lisp_Object root) | |
2575 | { | |
2576 | struct window *w, *r, *s; | |
2577 | struct frame *f; | |
46a4ce9e | 2578 | Lisp_Object sibling, pwindow, swindow IF_LINT (= Qnil), delta; |
d311d28c | 2579 | ptrdiff_t startpos IF_LINT (= 0); |
46a4ce9e | 2580 | int top IF_LINT (= 0), new_top, resize_failed; |
1a13852e MR |
2581 | |
2582 | w = decode_any_window (window); | |
d3d50620 | 2583 | CHECK_LIVE_FRAME (w->frame); |
1a13852e | 2584 | XSETWINDOW (window, w); |
d3d50620 | 2585 | f = XFRAME (w->frame); |
1a13852e MR |
2586 | |
2587 | if (NILP (root)) | |
2588 | /* ROOT is the frame's root window. */ | |
2589 | { | |
2590 | root = FRAME_ROOT_WINDOW (f); | |
2591 | r = XWINDOW (root); | |
2592 | } | |
2593 | else | |
2594 | /* ROOT must be an ancestor of WINDOW. */ | |
2595 | { | |
2596 | r = decode_any_window (root); | |
d3d50620 DA |
2597 | CHECK_LIVE_FRAME (r->frame); |
2598 | pwindow = XWINDOW (window)->parent; | |
1a13852e MR |
2599 | while (!NILP (pwindow)) |
2600 | if (EQ (pwindow, root)) | |
2601 | break; | |
2602 | else | |
d3d50620 | 2603 | pwindow = XWINDOW (pwindow)->parent; |
1a13852e MR |
2604 | if (!EQ (pwindow, root)) |
2605 | error ("Specified root is not an ancestor of specified window"); | |
2606 | } | |
2607 | ||
2608 | if (EQ (window, root)) | |
2609 | /* A noop. */ | |
2610 | return Qnil; | |
2611 | /* I don't understand the "top > 0" part below. If we deal with a | |
2612 | standalone minibuffer it would have been caught by the preceding | |
2613 | test. */ | |
2614 | else if (MINI_WINDOW_P (w)) /* && top > 0) */ | |
2615 | error ("Can't expand minibuffer to full frame"); | |
2616 | ||
d3d50620 | 2617 | if (!NILP (w->buffer)) |
1a13852e | 2618 | { |
d3d50620 | 2619 | startpos = marker_position (w->start); |
1a13852e MR |
2620 | top = WINDOW_TOP_EDGE_LINE (w) |
2621 | - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2622 | /* Make sure WINDOW is the frame's selected window. */ | |
2623 | if (!EQ (window, FRAME_SELECTED_WINDOW (f))) | |
2624 | { | |
d3d50620 | 2625 | if (EQ (selected_frame, w->frame)) |
1a13852e MR |
2626 | Fselect_window (window, Qnil); |
2627 | else | |
edd74c35 | 2628 | FSET (f, selected_window, window); |
1a13852e MR |
2629 | } |
2630 | } | |
2631 | else | |
2632 | { | |
be7f5545 MR |
2633 | /* See if the frame's selected window is a part of the window |
2634 | subtree rooted at WINDOW, by finding all the selected window's | |
2635 | parents and comparing each one with WINDOW. If it isn't we | |
2636 | need a new selected window for this frame. */ | |
1a13852e MR |
2637 | swindow = FRAME_SELECTED_WINDOW (f); |
2638 | while (1) | |
2639 | { | |
2640 | pwindow = swindow; | |
2641 | while (!NILP (pwindow) && !EQ (window, pwindow)) | |
d3d50620 | 2642 | pwindow = XWINDOW (pwindow)->parent; |
1a13852e MR |
2643 | |
2644 | if (EQ (window, pwindow)) | |
2645 | /* If WINDOW is an ancestor of SWINDOW, then SWINDOW is ok | |
2646 | as the new selected window. */ | |
2647 | break; | |
2648 | else | |
2649 | /* Else try the previous window of SWINDOW. */ | |
2650 | swindow = Fprevious_window (swindow, Qlambda, Qnil); | |
2651 | } | |
2652 | ||
2653 | if (!EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
2654 | { | |
d3d50620 | 2655 | if (EQ (selected_frame, w->frame)) |
1a13852e MR |
2656 | Fselect_window (swindow, Qnil); |
2657 | else | |
edd74c35 | 2658 | FSET (f, selected_window, swindow); |
1a13852e MR |
2659 | } |
2660 | } | |
2661 | ||
2662 | BLOCK_INPUT; | |
4c5501e9 EZ |
2663 | if (!FRAME_INITIAL_P (f)) |
2664 | { | |
2665 | Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f); | |
2666 | ||
2667 | /* We are going to free the glyph matrices of WINDOW, and with | |
2668 | that we might lose any information about glyph rows that have | |
2669 | some of their glyphs highlighted in mouse face. (These rows | |
2670 | are marked with a non-zero mouse_face_p flag.) If WINDOW | |
2671 | indeed has some glyphs highlighted in mouse face, signal to | |
2672 | frame's up-to-date hook that mouse highlight was overwritten, | |
2673 | so that it will arrange for redisplaying the highlight. */ | |
2674 | if (EQ (hlinfo->mouse_face_window, window)) | |
2675 | { | |
2676 | hlinfo->mouse_face_beg_row = hlinfo->mouse_face_beg_col = -1; | |
2677 | hlinfo->mouse_face_end_row = hlinfo->mouse_face_end_col = -1; | |
2678 | hlinfo->mouse_face_window = Qnil; | |
2679 | } | |
a6b1c7cc | 2680 | } |
1a13852e MR |
2681 | free_window_matrices (r); |
2682 | ||
2683 | windows_or_buffers_changed++; | |
2684 | Vwindow_list = Qnil; | |
2685 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
46a4ce9e | 2686 | resize_failed = 0; |
1a13852e | 2687 | |
d3d50620 | 2688 | if (NILP (w->buffer)) |
1a13852e | 2689 | { |
be7f5545 | 2690 | /* Resize child windows vertically. */ |
d3d50620 DA |
2691 | XSETINT (delta, XINT (r->total_lines) |
2692 | - XINT (w->total_lines)); | |
2693 | WSET (w, top_line, r->top_line); | |
1a13852e | 2694 | resize_root_window (window, delta, Qnil, Qnil); |
d615d6d2 MR |
2695 | if (window_resize_check (w, 0)) |
2696 | window_resize_apply (w, 0); | |
1a13852e MR |
2697 | else |
2698 | { | |
2699 | resize_root_window (window, delta, Qnil, Qt); | |
d615d6d2 MR |
2700 | if (window_resize_check (w, 0)) |
2701 | window_resize_apply (w, 0); | |
1a13852e MR |
2702 | else |
2703 | resize_failed = 1; | |
2704 | } | |
2705 | ||
be7f5545 | 2706 | /* Resize child windows horizontally. */ |
1a13852e MR |
2707 | if (!resize_failed) |
2708 | { | |
d3d50620 DA |
2709 | WSET (w, left_col, r->left_col); |
2710 | XSETINT (delta, XINT (r->total_cols) | |
2711 | - XINT (w->total_cols)); | |
2712 | WSET (w, left_col, r->left_col); | |
1a13852e | 2713 | resize_root_window (window, delta, Qt, Qnil); |
d615d6d2 MR |
2714 | if (window_resize_check (w, 1)) |
2715 | window_resize_apply (w, 1); | |
1a13852e MR |
2716 | else |
2717 | { | |
2718 | resize_root_window (window, delta, Qt, Qt); | |
d615d6d2 MR |
2719 | if (window_resize_check (w, 1)) |
2720 | window_resize_apply (w, 1); | |
1a13852e MR |
2721 | else |
2722 | resize_failed = 1; | |
2723 | } | |
2724 | } | |
2725 | ||
2726 | if (resize_failed) | |
2727 | /* Play safe, if we still can ... */ | |
2728 | { | |
2729 | window = swindow; | |
2730 | w = XWINDOW (window); | |
2731 | } | |
2732 | } | |
2733 | ||
2734 | /* Cleanly unlink WINDOW from window-tree. */ | |
d3d50620 | 2735 | if (!NILP (w->prev)) |
1a13852e MR |
2736 | /* Get SIBLING above (on the left of) WINDOW. */ |
2737 | { | |
d3d50620 | 2738 | sibling = w->prev; |
1a13852e | 2739 | s = XWINDOW (sibling); |
d3d50620 DA |
2740 | WSET (s, next, w->next); |
2741 | if (!NILP (s->next)) | |
2742 | WSET (XWINDOW (s->next), prev, sibling); | |
1a13852e MR |
2743 | } |
2744 | else | |
2745 | /* Get SIBLING below (on the right of) WINDOW. */ | |
2746 | { | |
d3d50620 | 2747 | sibling = w->next; |
1a13852e | 2748 | s = XWINDOW (sibling); |
077288cf | 2749 | WSET (s, prev, Qnil); |
d3d50620 DA |
2750 | if (!NILP (XWINDOW (w->parent)->vchild)) |
2751 | WSET (XWINDOW (w->parent), vchild, sibling); | |
1a13852e | 2752 | else |
d3d50620 | 2753 | WSET (XWINDOW (w->parent), hchild, sibling); |
1a13852e MR |
2754 | } |
2755 | ||
be7f5545 | 2756 | /* Delete ROOT and all child windows of ROOT. */ |
d3d50620 | 2757 | if (!NILP (r->vchild)) |
1a13852e | 2758 | { |
d3d50620 | 2759 | delete_all_child_windows (r->vchild); |
077288cf | 2760 | WSET (r, vchild, Qnil); |
1a13852e | 2761 | } |
d3d50620 | 2762 | else if (!NILP (r->hchild)) |
1a13852e | 2763 | { |
d3d50620 | 2764 | delete_all_child_windows (r->hchild); |
077288cf | 2765 | WSET (r, hchild, Qnil); |
1a13852e MR |
2766 | } |
2767 | ||
2768 | replace_window (root, window, 1); | |
2769 | ||
1a13852e | 2770 | /* This must become SWINDOW anyway ....... */ |
d3d50620 | 2771 | if (!NILP (w->buffer) && !resize_failed) |
1a13852e MR |
2772 | { |
2773 | /* Try to minimize scrolling, by setting the window start to the | |
2774 | point will cause the text at the old window start to be at the | |
2775 | same place on the frame. But don't try to do this if the | |
2776 | window start is outside the visible portion (as might happen | |
2777 | when the display is not current, due to typeahead). */ | |
2778 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2779 | if (new_top != top | |
d3d50620 DA |
2780 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) |
2781 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) | |
1a13852e MR |
2782 | { |
2783 | struct position pos; | |
2784 | struct buffer *obuf = current_buffer; | |
2785 | ||
d3d50620 | 2786 | Fset_buffer (w->buffer); |
1a13852e MR |
2787 | /* This computation used to temporarily move point, but that |
2788 | can have unwanted side effects due to text properties. */ | |
2789 | pos = *vmotion (startpos, -top, w); | |
2790 | ||
d3d50620 | 2791 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
077288cf | 2792 | WSET (w, window_end_valid, Qnil); |
c98ff5dd DA |
2793 | w->start_at_line_beg = (pos.bytepos == BEGV_BYTE |
2794 | || FETCH_BYTE (pos.bytepos - 1) == '\n'); | |
1a13852e MR |
2795 | /* We need to do this, so that the window-scroll-functions |
2796 | get called. */ | |
c98ff5dd | 2797 | w->optional_new_start = 1; |
1a13852e MR |
2798 | |
2799 | set_buffer_internal (obuf); | |
2800 | } | |
2801 | } | |
2802 | ||
2803 | adjust_glyphs (f); | |
2804 | UNBLOCK_INPUT; | |
2805 | ||
2806 | run_window_configuration_change_hook (f); | |
2807 | ||
2808 | return Qnil; | |
2809 | } | |
2810 | ||
2811 | ||
9397e56f MR |
2812 | void |
2813 | replace_buffer_in_windows (Lisp_Object buffer) | |
7ab12479 | 2814 | { |
9397e56f | 2815 | call1 (Qreplace_buffer_in_windows, buffer); |
7ab12479 JB |
2816 | } |
2817 | ||
ff58478b | 2818 | |
9397e56f MR |
2819 | /* Safely replace BUFFER with some other buffer in all windows of all |
2820 | frames, even those on other keyboards. */ | |
ff58478b RS |
2821 | |
2822 | void | |
9397e56f | 2823 | replace_buffer_in_windows_safely (Lisp_Object buffer) |
ff58478b RS |
2824 | { |
2825 | Lisp_Object tail, frame; | |
2826 | ||
9397e56f MR |
2827 | /* A single call to window_loop won't do the job because it only |
2828 | considers frames on the current keyboard. So loop manually over | |
2829 | frames, and handle each one. */ | |
ff58478b | 2830 | FOR_EACH_FRAME (tail, frame) |
9397e56f | 2831 | window_loop (REPLACE_BUFFER_IN_WINDOWS_SAFELY, buffer, 1, frame); |
ff58478b | 2832 | } |
7ab12479 | 2833 | \f |
a481b3ea JB |
2834 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the |
2835 | minimum allowable size. */ | |
5500c422 | 2836 | |
605be8af | 2837 | void |
971de7fb | 2838 | check_frame_size (FRAME_PTR frame, int *rows, int *cols) |
a481b3ea | 2839 | { |
628df3bf | 2840 | /* For height, we have to see: |
54b8bcb5 RS |
2841 | how many windows the frame has at minimum (one or two), |
2842 | and whether it has a menu bar or other special stuff at the top. */ | |
2843 | int min_height | |
2844 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
2845 | ? MIN_SAFE_WINDOW_HEIGHT | |
2846 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 2847 | |
5500c422 GM |
2848 | if (FRAME_TOP_MARGIN (frame) > 0) |
2849 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2850 | |
2851 | if (*rows < min_height) | |
2852 | *rows = min_height; | |
2853 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2854 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2855 | } | |
2856 | ||
79fd290e | 2857 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
2858 | Return 1 if window width is ok after adjustment; 0 if window |
2859 | is still too narrow. */ | |
2860 | ||
2861 | static int | |
971de7fb | 2862 | adjust_window_margins (struct window *w) |
949cf20f KS |
2863 | { |
2864 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
2865 | - WINDOW_FRINGE_COLS (w) | |
2866 | - WINDOW_SCROLL_BAR_COLS (w)); | |
2867 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
2868 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
2869 | ||
2870 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
2871 | return 1; | |
2872 | ||
2873 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
2874 | return 0; | |
2875 | ||
2876 | /* Window's text area is too narrow, but reducing the window | |
2877 | margins will fix that. */ | |
2878 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
2879 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
2880 | { | |
2881 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
077288cf DA |
2882 | { |
2883 | WSET (w, left_margin_cols, make_number (margin_cols / 2)); | |
2884 | WSET (w, right_margin_cols, make_number (margin_cols / 2)); | |
2885 | } | |
949cf20f | 2886 | else |
077288cf | 2887 | WSET (w, right_margin_cols, make_number (margin_cols)); |
949cf20f KS |
2888 | } |
2889 | else | |
077288cf | 2890 | WSET (w, left_margin_cols, make_number (margin_cols)); |
949cf20f KS |
2891 | return 1; |
2892 | } | |
562dd5e9 | 2893 | \f |
9397e56f MR |
2894 | /* The following three routines are needed for running a window's |
2895 | configuration change hook. */ | |
562dd5e9 MR |
2896 | static void |
2897 | run_funs (Lisp_Object funs) | |
2898 | { | |
2899 | for (; CONSP (funs); funs = XCDR (funs)) | |
2900 | if (!EQ (XCAR (funs), Qt)) | |
2901 | call0 (XCAR (funs)); | |
2902 | } | |
6b61353c | 2903 | |
9397e56f MR |
2904 | static Lisp_Object |
2905 | select_window_norecord (Lisp_Object window) | |
2906 | { | |
2907 | return WINDOW_LIVE_P (window) | |
2908 | ? Fselect_window (window, Qt) : selected_window; | |
2909 | } | |
2910 | ||
2911 | static Lisp_Object | |
2912 | select_frame_norecord (Lisp_Object frame) | |
2913 | { | |
2914 | return FRAME_LIVE_P (XFRAME (frame)) | |
2915 | ? Fselect_frame (frame, Qt) : selected_frame; | |
2916 | } | |
6b61353c | 2917 | |
562dd5e9 MR |
2918 | void |
2919 | run_window_configuration_change_hook (struct frame *f) | |
2920 | { | |
d311d28c | 2921 | ptrdiff_t count = SPECPDL_INDEX (); |
562dd5e9 MR |
2922 | Lisp_Object frame, global_wcch |
2923 | = Fdefault_value (Qwindow_configuration_change_hook); | |
2924 | XSETFRAME (frame, f); | |
6b61353c | 2925 | |
d1f55f16 | 2926 | if (NILP (Vrun_hooks) || !NILP (inhibit_lisp_code)) |
562dd5e9 | 2927 | return; |
6b61353c | 2928 | |
562dd5e9 MR |
2929 | /* Use the right buffer. Matters when running the local hooks. */ |
2930 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
6b61353c | 2931 | { |
562dd5e9 MR |
2932 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
2933 | Fset_buffer (Fwindow_buffer (Qnil)); | |
2934 | } | |
6a44ffb3 | 2935 | |
1a13852e MR |
2936 | if (SELECTED_FRAME () != f) |
2937 | { | |
2938 | record_unwind_protect (select_frame_norecord, Fselected_frame ()); | |
2939 | select_frame_norecord (frame); | |
2940 | } | |
2941 | ||
6a44ffb3 SM |
2942 | /* Look for buffer-local values. */ |
2943 | { | |
2944 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
2945 | for (; CONSP (windows); windows = XCDR (windows)) | |
2946 | { | |
2947 | Lisp_Object window = XCAR (windows); | |
2948 | Lisp_Object buffer = Fwindow_buffer (window); | |
2949 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
2950 | buffer))) | |
2951 | { | |
d311d28c | 2952 | ptrdiff_t inner_count = SPECPDL_INDEX (); |
6a44ffb3 SM |
2953 | record_unwind_protect (select_window_norecord, Fselected_window ()); |
2954 | select_window_norecord (window); | |
2955 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
2956 | buffer)); | |
46a4ce9e | 2957 | unbind_to (inner_count, Qnil); |
fec89261 | 2958 | } |
6a44ffb3 SM |
2959 | } |
2960 | } | |
047aaeb9 | 2961 | |
6a44ffb3 SM |
2962 | run_funs (global_wcch); |
2963 | unbind_to (count, Qnil); | |
ef264c42 SM |
2964 | } |
2965 | ||
1a13852e MR |
2966 | DEFUN ("run-window-configuration-change-hook", Frun_window_configuration_change_hook, |
2967 | Srun_window_configuration_change_hook, 1, 1, 0, | |
2968 | doc: /* Run `window-configuration-change-hook' for FRAME. */) | |
2969 | (Lisp_Object frame) | |
2970 | { | |
2971 | CHECK_LIVE_FRAME (frame); | |
2972 | run_window_configuration_change_hook (XFRAME (frame)); | |
2973 | return Qnil; | |
2974 | } | |
2975 | ||
5500c422 GM |
2976 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
2977 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
2978 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
2979 | margins, fringes, and scroll-bar settings of the window are not | |
2980 | reset from the buffer's local settings. */ | |
7ab12479 | 2981 | |
5500c422 | 2982 | void |
971de7fb | 2983 | set_window_buffer (Lisp_Object window, Lisp_Object buffer, int run_hooks_p, int keep_margins_p) |
5500c422 GM |
2984 | { |
2985 | struct window *w = XWINDOW (window); | |
2986 | struct buffer *b = XBUFFER (buffer); | |
d311d28c | 2987 | ptrdiff_t count = SPECPDL_INDEX (); |
d3d50620 | 2988 | int samebuf = EQ (buffer, w->buffer); |
7ab12479 | 2989 | |
077288cf | 2990 | WSET (w, buffer, buffer); |
86e48436 RS |
2991 | |
2992 | if (EQ (window, selected_window)) | |
4c31be61 | 2993 | BSET (b, last_selected_window, window); |
beb4e312 | 2994 | |
c49a0495 KS |
2995 | /* Let redisplay errors through. */ |
2996 | b->display_error_modiff = 0; | |
2997 | ||
beb4e312 | 2998 | /* Update time stamps of buffer display. */ |
4b4deea2 | 2999 | if (INTEGERP (BVAR (b, display_count))) |
4c31be61 DA |
3000 | BSET (b, display_count, make_number (XINT (BVAR (b, display_count)) + 1)); |
3001 | BSET (b, display_time, Fcurrent_time ()); | |
86e48436 | 3002 | |
077288cf DA |
3003 | WSET (w, window_end_pos, make_number (0)); |
3004 | WSET (w, window_end_vpos, make_number (0)); | |
72af86bd | 3005 | memset (&w->last_cursor, 0, sizeof w->last_cursor); |
077288cf | 3006 | WSET (w, window_end_valid, Qnil); |
c3b232e4 | 3007 | if (!(keep_margins_p && samebuf)) |
23fe745a | 3008 | { /* If we're not actually changing the buffer, don't reset hscroll and |
c3b232e4 SM |
3009 | vscroll. This case happens for example when called from |
3010 | change_frame_size_1, where we use a dummy call to | |
3011 | Fset_window_buffer on the frame's selected window (and no other) | |
3012 | just in order to run window-configuration-change-hook. | |
3013 | Resetting hscroll and vscroll here is problematic for things like | |
3014 | image-mode and doc-view-mode since it resets the image's position | |
3015 | whenever we resize the frame. */ | |
80b00b08 | 3016 | w->hscroll = w->min_hscroll = 0; |
c3b232e4 | 3017 | w->vscroll = 0; |
d3d50620 DA |
3018 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
3019 | set_marker_restricted (w->start, | |
c3b232e4 SM |
3020 | make_number (b->last_window_start), |
3021 | buffer); | |
c98ff5dd DA |
3022 | w->start_at_line_beg = 0; |
3023 | w->force_start = 0; | |
80b00b08 DA |
3024 | w->last_modified = 0; |
3025 | w->last_overlay_modified = 0; | |
c3b232e4 SM |
3026 | } |
3027 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
3028 | I doubt it's worth the trouble. */ | |
7ab12479 | 3029 | windows_or_buffers_changed++; |
5b03d3c0 | 3030 | |
da39107c | 3031 | /* We must select BUFFER for running the window-scroll-functions. */ |
5b03d3c0 RS |
3032 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3033 | because that might itself be a local variable. */ | |
da39107c | 3034 | if (window_initialized) |
5b03d3c0 | 3035 | { |
da39107c | 3036 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
5b03d3c0 RS |
3037 | Fset_buffer (buffer); |
3038 | } | |
3039 | ||
d3d50620 | 3040 | XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type); |
a1562258 | 3041 | |
949cf20f KS |
3042 | if (!keep_margins_p) |
3043 | { | |
3044 | /* Set left and right marginal area width etc. from buffer. */ | |
3045 | ||
79fd290e | 3046 | /* This may call adjust_window_margins three times, so |
949cf20f | 3047 | temporarily disable window margins. */ |
d3d50620 DA |
3048 | Lisp_Object save_left = w->left_margin_cols; |
3049 | Lisp_Object save_right = w->right_margin_cols; | |
6b61353c | 3050 | |
077288cf DA |
3051 | WSET (w, left_margin_cols, Qnil); |
3052 | WSET (w, right_margin_cols, Qnil); | |
949cf20f KS |
3053 | |
3054 | Fset_window_fringes (window, | |
4b4deea2 TT |
3055 | BVAR (b, left_fringe_width), BVAR (b, right_fringe_width), |
3056 | BVAR (b, fringes_outside_margins)); | |
949cf20f KS |
3057 | |
3058 | Fset_window_scroll_bars (window, | |
4b4deea2 TT |
3059 | BVAR (b, scroll_bar_width), |
3060 | BVAR (b, vertical_scroll_bar_type), Qnil); | |
949cf20f | 3061 | |
077288cf DA |
3062 | WSET (w, left_margin_cols, save_left); |
3063 | WSET (w, right_margin_cols, save_right); | |
6b61353c | 3064 | |
949cf20f | 3065 | Fset_window_margins (window, |
4b4deea2 | 3066 | BVAR (b, left_margin_cols), BVAR (b, right_margin_cols)); |
949cf20f | 3067 | } |
7ab12479 | 3068 | |
5500c422 GM |
3069 | if (run_hooks_p) |
3070 | { | |
3071 | if (! NILP (Vwindow_scroll_functions)) | |
3072 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
d3d50620 | 3073 | Fmarker_position (w->start)); |
ef264c42 | 3074 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
5500c422 | 3075 | } |
543f5fb1 | 3076 | |
5b03d3c0 | 3077 | unbind_to (count, Qnil); |
5500c422 | 3078 | } |
5b03d3c0 | 3079 | |
a7ca3326 | 3080 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
d653c8cc | 3081 | doc: /* Make WINDOW display BUFFER-OR-NAME as its contents. |
9397e56f MR |
3082 | WINDOW has to be a live window and defaults to the selected one. |
3083 | BUFFER-OR-NAME must be a buffer or the name of an existing buffer. | |
3084 | ||
3085 | Optional third argument KEEP-MARGINS non-nil means that WINDOW's current | |
3086 | display margins, fringe widths, and scroll bar settings are preserved; | |
3087 | the default is to reset these from the local settings for BUFFER-OR-NAME | |
3088 | or the frame defaults. Return nil. | |
d653c8cc | 3089 | |
7bfac547 MR |
3090 | This function throws an error when WINDOW is strongly dedicated to its |
3091 | buffer (that is `window-dedicated-p' returns t for WINDOW) and does not | |
3092 | already display BUFFER-OR-NAME. | |
6cb4a892 | 3093 | |
8fef9de1 MR |
3094 | This function runs `window-scroll-functions' before running |
3095 | `window-configuration-change-hook'. */) | |
5842a27b | 3096 | (register Lisp_Object window, Lisp_Object buffer_or_name, Lisp_Object keep_margins) |
5500c422 | 3097 | { |
d653c8cc | 3098 | register Lisp_Object tem, buffer; |
5500c422 | 3099 | register struct window *w = decode_window (window); |
5500c422 | 3100 | |
bed0c171 | 3101 | XSETWINDOW (window, w); |
d653c8cc | 3102 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 3103 | CHECK_BUFFER (buffer); |
4b4deea2 | 3104 | if (NILP (BVAR (XBUFFER (buffer), name))) |
5500c422 GM |
3105 | error ("Attempt to display deleted buffer"); |
3106 | ||
d3d50620 | 3107 | tem = w->buffer; |
aac0c6e3 MR |
3108 | if (NILP (tem)) |
3109 | error ("Window is deleted"); | |
3110 | else if (!EQ (tem, Qt)) | |
d653c8cc | 3111 | /* w->buffer is t when the window is first being set up. */ |
5500c422 | 3112 | { |
9397e56f MR |
3113 | if (!EQ (tem, buffer)) |
3114 | { | |
d3d50620 | 3115 | if (EQ (w->dedicated, Qt)) |
9397e56f MR |
3116 | /* WINDOW is strongly dedicated to its buffer, signal an |
3117 | error. */ | |
3118 | error ("Window is dedicated to `%s'", SDATA (BVAR (XBUFFER (tem), name))); | |
3119 | else | |
3120 | /* WINDOW is weakly dedicated to its buffer, reset | |
e4769531 | 3121 | dedication. */ |
077288cf | 3122 | WSET (w, dedicated, Qnil); |
9397e56f MR |
3123 | |
3124 | call1 (Qrecord_window_buffer, window); | |
3125 | } | |
5500c422 GM |
3126 | |
3127 | unshow_buffer (w); | |
3128 | } | |
3129 | ||
949cf20f | 3130 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 | 3131 | |
9397e56f | 3132 | return Qnil; |
c6932ecd | 3133 | } |
b7354ddf | 3134 | \f |
7e5cf297 | 3135 | static Lisp_Object |
971de7fb | 3136 | display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, Lisp_Object override_frame) |
d07f802a | 3137 | { |
87478b52 | 3138 | return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); |
d07f802a RS |
3139 | } |
3140 | ||
6b61353c KH |
3141 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, |
3142 | 0, 1, 0, | |
5a1048a5 | 3143 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 3144 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3145 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c | 3146 | displaying that buffer. */) |
5842a27b | 3147 | (Lisp_Object object) |
6b61353c KH |
3148 | { |
3149 | if (NILP (object)) | |
3150 | { | |
3151 | windows_or_buffers_changed++; | |
3152 | update_mode_lines++; | |
3153 | return Qt; | |
3154 | } | |
3155 | ||
3156 | if (WINDOWP (object)) | |
3157 | { | |
3158 | struct window *w = XWINDOW (object); | |
3159 | mark_window_display_accurate (object, 0); | |
c98ff5dd | 3160 | w->update_mode_line = 1; |
d3d50620 DA |
3161 | if (BUFFERP (w->buffer)) |
3162 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
6b61353c KH |
3163 | ++update_mode_lines; |
3164 | return Qt; | |
3165 | } | |
0cc1039f | 3166 | |
6b61353c KH |
3167 | if (STRINGP (object)) |
3168 | object = Fget_buffer (object); | |
4b4deea2 | 3169 | if (BUFFERP (object) && !NILP (BVAR (XBUFFER (object), name))) |
6b61353c KH |
3170 | { |
3171 | /* Walk all windows looking for buffer, and force update | |
3172 | of each of those windows. */ | |
3173 | ||
3174 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); | |
3175 | return NILP (object) ? Qnil : Qt; | |
3176 | } | |
3177 | ||
3178 | /* If nothing suitable was found, just return. | |
3179 | We could signal an error, but this feature will typically be used | |
3180 | asynchronously in timers or process sentinels, so we don't. */ | |
3181 | return Qnil; | |
3182 | } | |
3183 | ||
3184 | ||
7ab12479 | 3185 | void |
971de7fb | 3186 | temp_output_buffer_show (register Lisp_Object buf) |
7ab12479 JB |
3187 | { |
3188 | register struct buffer *old = current_buffer; | |
3189 | register Lisp_Object window; | |
3190 | register struct window *w; | |
3191 | ||
4c31be61 | 3192 | BSET (XBUFFER (buf), directory, BVAR (current_buffer, directory)); |
bccd3dd1 | 3193 | |
7ab12479 | 3194 | Fset_buffer (buf); |
c6367666 | 3195 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3196 | BEGV = BEG; |
3197 | ZV = Z; | |
3198 | SET_PT (BEG); | |
7ab12479 JB |
3199 | set_buffer_internal (old); |
3200 | ||
e67a1dea | 3201 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3202 | call1 (Vtemp_buffer_show_function, buf); |
3203 | else | |
3204 | { | |
4ee88440 | 3205 | window = display_buffer (buf, Qnil, Qnil); |
7ab12479 | 3206 | |
d3d50620 | 3207 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3208 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3209 | Vminibuf_scroll_window = window; |
3210 | w = XWINDOW (window); | |
80b00b08 DA |
3211 | w->hscroll = 0; |
3212 | w->min_hscroll = 0; | |
d3d50620 DA |
3213 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3214 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3215 | |
beb4e312 | 3216 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3217 | and its buffer current. */ |
dee091a3 | 3218 | { |
d311d28c | 3219 | ptrdiff_t count = SPECPDL_INDEX (); |
dee091a3 JD |
3220 | Lisp_Object prev_window, prev_buffer; |
3221 | prev_window = selected_window; | |
3222 | XSETBUFFER (prev_buffer, old); | |
3223 | ||
3224 | /* Select the window that was chosen, for running the hook. | |
3225 | Note: Both Fselect_window and select_window_norecord may | |
3226 | set-buffer to the buffer displayed in the window, | |
3227 | so we need to save the current buffer. --stef */ | |
3228 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3229 | record_unwind_protect (select_window_norecord, prev_window); | |
3230 | Fselect_window (window, Qt); | |
d3d50620 | 3231 | Fset_buffer (w->buffer); |
dee091a3 JD |
3232 | Frun_hooks (1, &Qtemp_buffer_show_hook); |
3233 | unbind_to (count, Qnil); | |
3234 | } | |
2cccc823 | 3235 | } |
7ab12479 | 3236 | } |
3e21b6a7 SM |
3237 | |
3238 | DEFUN ("internal-temp-output-buffer-show", | |
3239 | Ftemp_output_buffer_show, Stemp_output_buffer_show, | |
3240 | 1, 1, 0, | |
87e68db4 | 3241 | doc: /* Internal function for `with-output-to-temp-buffer'. */) |
3e21b6a7 SM |
3242 | (Lisp_Object buf) |
3243 | { | |
3244 | temp_output_buffer_show (buf); | |
3245 | return Qnil; | |
3246 | } | |
7ab12479 | 3247 | \f |
1a13852e MR |
3248 | /* Make new window, have it replace WINDOW in window-tree, and make |
3249 | WINDOW its only vertical child (HORFLAG 1 means make WINDOW its only | |
3250 | horizontal child). */ | |
3251 | static void | |
3252 | make_parent_window (Lisp_Object window, int horflag) | |
3253 | { | |
3254 | Lisp_Object parent; | |
3255 | register struct window *o, *p; | |
1a13852e MR |
3256 | |
3257 | o = XWINDOW (window); | |
3258 | p = allocate_window (); | |
aa754e6a | 3259 | memcpy ((char *) p + sizeof (struct vectorlike_header), |
62efea5e | 3260 | (char *) o + sizeof (struct vectorlike_header), |
663e2b3f | 3261 | word_size * VECSIZE (struct window)); |
1a13852e MR |
3262 | XSETWINDOW (parent, p); |
3263 | ||
45942c7d | 3264 | p->sequence_number = ++sequence_number; |
1a13852e MR |
3265 | |
3266 | replace_window (window, parent, 1); | |
3267 | ||
077288cf DA |
3268 | WSET (o, next, Qnil); |
3269 | WSET (o, prev, Qnil); | |
3270 | WSET (o, parent, parent); | |
1a13852e | 3271 | |
077288cf DA |
3272 | WSET (p, hchild, horflag ? window : Qnil); |
3273 | WSET (p, vchild, horflag ? Qnil : window); | |
3274 | WSET (p, start, Qnil); | |
3275 | WSET (p, pointm, Qnil); | |
3276 | WSET (p, buffer, Qnil); | |
3277 | WSET (p, combination_limit, Qnil); | |
3278 | WSET (p, window_parameters, Qnil); | |
1a13852e MR |
3279 | } |
3280 | ||
496e208e MR |
3281 | /* Make new window from scratch. */ |
3282 | Lisp_Object | |
3283 | make_window (void) | |
3284 | { | |
3285 | Lisp_Object window; | |
3286 | register struct window *w; | |
3287 | ||
3288 | w = allocate_window (); | |
62efea5e DA |
3289 | /* Initialize Lisp data. Note that allocate_window initializes all |
3290 | Lisp data to nil, so do it only for slots which should not be nil. */ | |
077288cf DA |
3291 | WSET (w, left_col, make_number (0)); |
3292 | WSET (w, top_line, make_number (0)); | |
3293 | WSET (w, total_lines, make_number (0)); | |
3294 | WSET (w, total_cols, make_number (0)); | |
3295 | WSET (w, normal_lines, make_float (1.0)); | |
3296 | WSET (w, normal_cols, make_float (1.0)); | |
3297 | WSET (w, new_total, make_number (0)); | |
3298 | WSET (w, new_normal, make_number (0)); | |
3299 | WSET (w, start, Fmake_marker ()); | |
3300 | WSET (w, pointm, Fmake_marker ()); | |
3301 | WSET (w, vertical_scroll_bar_type, Qt); | |
3302 | WSET (w, window_end_pos, make_number (0)); | |
3303 | WSET (w, window_end_vpos, make_number (0)); | |
62efea5e DA |
3304 | |
3305 | /* Initialize non-Lisp data. Note that allocate_window zeroes out all | |
3306 | non-Lisp data, so do it only for slots which should not be zero. */ | |
496e208e | 3307 | w->nrows_scale_factor = w->ncols_scale_factor = 1; |
496e208e MR |
3308 | w->phys_cursor_type = -1; |
3309 | w->phys_cursor_width = -1; | |
45942c7d | 3310 | w->sequence_number = ++sequence_number; |
62efea5e | 3311 | |
496e208e MR |
3312 | /* Reset window_list. */ |
3313 | Vwindow_list = Qnil; | |
3314 | /* Return window. */ | |
3315 | XSETWINDOW (window, w); | |
3316 | return window; | |
3317 | } | |
3318 | \f | |
3319 | DEFUN ("set-window-new-total", Fset_window_new_total, Sset_window_new_total, 2, 3, 0, | |
3320 | doc: /* Set new total size of WINDOW to SIZE. | |
3321 | Return SIZE. | |
3322 | ||
3323 | Optional argument ADD non-nil means add SIZE to the new total size of | |
3324 | WINDOW and return the sum. | |
3325 | ||
be7f5545 | 3326 | Note: This function does not operate on any child windows of WINDOW. */) |
496e208e MR |
3327 | (Lisp_Object window, Lisp_Object size, Lisp_Object add) |
3328 | { | |
3329 | struct window *w = decode_any_window (window); | |
3330 | ||
3331 | CHECK_NUMBER (size); | |
3332 | if (NILP (add)) | |
077288cf | 3333 | WSET (w, new_total, size); |
496e208e | 3334 | else |
d3d50620 | 3335 | WSET (w, new_total, make_number (XINT (w->new_total) + XINT (size))); |
496e208e | 3336 | |
d3d50620 | 3337 | return w->new_total; |
496e208e MR |
3338 | } |
3339 | ||
3340 | DEFUN ("set-window-new-normal", Fset_window_new_normal, Sset_window_new_normal, 1, 2, 0, | |
3341 | doc: /* Set new normal size of WINDOW to SIZE. | |
3342 | Return SIZE. | |
3343 | ||
be7f5545 | 3344 | Note: This function does not operate on any child windows of WINDOW. */) |
496e208e MR |
3345 | (Lisp_Object window, Lisp_Object size) |
3346 | { | |
077288cf | 3347 | return WSET (decode_any_window (window), new_normal, size); |
7ab12479 JB |
3348 | } |
3349 | ||
1a13852e MR |
3350 | /* Return 1 if setting w->total_lines (w->total_cols if HORFLAG is |
3351 | non-zero) to w->new_total would result in correct heights (widths) | |
be7f5545 | 3352 | for window W and recursively all child windows of W. |
1a13852e MR |
3353 | |
3354 | Note: This function does not check any of `window-fixed-size-p', | |
3355 | `window-min-height' or `window-min-width'. It does check that window | |
3356 | sizes do not drop below one line (two columns). */ | |
4b66faf3 | 3357 | static int |
d615d6d2 | 3358 | window_resize_check (struct window *w, int horflag) |
1a13852e MR |
3359 | { |
3360 | struct window *c; | |
3361 | ||
d3d50620 | 3362 | if (!NILP (w->vchild)) |
1a13852e MR |
3363 | /* W is a vertical combination. */ |
3364 | { | |
d3d50620 | 3365 | c = XWINDOW (w->vchild); |
1a13852e | 3366 | if (horflag) |
be7f5545 | 3367 | /* All child windows of W must have the same width as W. */ |
1a13852e MR |
3368 | { |
3369 | while (c) | |
3370 | { | |
d3d50620 | 3371 | if ((XINT (c->new_total) != XINT (w->new_total)) |
d615d6d2 | 3372 | || !window_resize_check (c, horflag)) |
1a13852e | 3373 | return 0; |
d3d50620 | 3374 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3375 | } |
3376 | return 1; | |
3377 | } | |
3378 | else | |
be7f5545 MR |
3379 | /* The sum of the heights of the child windows of W must equal |
3380 | W's height. */ | |
1a13852e MR |
3381 | { |
3382 | int sum_of_sizes = 0; | |
3383 | while (c) | |
3384 | { | |
d615d6d2 | 3385 | if (!window_resize_check (c, horflag)) |
1a13852e | 3386 | return 0; |
d3d50620 DA |
3387 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); |
3388 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e | 3389 | } |
d3d50620 | 3390 | return (sum_of_sizes == XINT (w->new_total)); |
1a13852e MR |
3391 | } |
3392 | } | |
d3d50620 | 3393 | else if (!NILP (w->hchild)) |
1a13852e MR |
3394 | /* W is a horizontal combination. */ |
3395 | { | |
d3d50620 | 3396 | c = XWINDOW (w->hchild); |
1a13852e | 3397 | if (horflag) |
be7f5545 | 3398 | /* The sum of the widths of the child windows of W must equal W's |
1a13852e MR |
3399 | width. */ |
3400 | { | |
3401 | int sum_of_sizes = 0; | |
3402 | while (c) | |
3403 | { | |
d615d6d2 | 3404 | if (!window_resize_check (c, horflag)) |
1a13852e | 3405 | return 0; |
d3d50620 DA |
3406 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); |
3407 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e | 3408 | } |
d3d50620 | 3409 | return (sum_of_sizes == XINT (w->new_total)); |
1a13852e MR |
3410 | } |
3411 | else | |
be7f5545 | 3412 | /* All child windows of W must have the same height as W. */ |
1a13852e MR |
3413 | { |
3414 | while (c) | |
3415 | { | |
d3d50620 | 3416 | if ((XINT (c->new_total) != XINT (w->new_total)) |
d615d6d2 | 3417 | || !window_resize_check (c, horflag)) |
1a13852e | 3418 | return 0; |
d3d50620 | 3419 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3420 | } |
3421 | return 1; | |
3422 | } | |
3423 | } | |
3424 | else | |
3425 | /* A leaf window. Make sure it's not too small. The following | |
3426 | hardcodes the values of `window-safe-min-width' (2) and | |
3427 | `window-safe-min-height' (1) which are defined in window.el. */ | |
d3d50620 | 3428 | return XINT (w->new_total) >= (horflag ? 2 : 1); |
1a13852e MR |
3429 | } |
3430 | ||
3431 | /* Set w->total_lines (w->total_cols if HORIZONTAL is non-zero) to | |
be7f5545 MR |
3432 | w->new_total for window W and recursively all child windows of W. |
3433 | Also calculate and assign the new vertical (horizontal) start | |
3434 | positions of each of these windows. | |
1a13852e MR |
3435 | |
3436 | This function does not perform any error checks. Make sure you have | |
d615d6d2 | 3437 | run window_resize_check on W before applying this function. */ |
440a42e3 | 3438 | static void |
d615d6d2 | 3439 | window_resize_apply (struct window *w, int horflag) |
1a13852e | 3440 | { |
46a4ce9e | 3441 | struct window *c; |
1a13852e MR |
3442 | int pos; |
3443 | ||
3444 | /* Note: Assigning new_normal requires that the new total size of the | |
3445 | parent window has been set *before*. */ | |
3446 | if (horflag) | |
3447 | { | |
d3d50620 DA |
3448 | WSET (w, total_cols, w->new_total); |
3449 | if (NUMBERP (w->new_normal)) | |
3450 | WSET (w, normal_cols, w->new_normal); | |
1a13852e | 3451 | |
d3d50620 | 3452 | pos = XINT (w->left_col); |
1a13852e MR |
3453 | } |
3454 | else | |
3455 | { | |
d3d50620 DA |
3456 | WSET (w, total_lines, w->new_total); |
3457 | if (NUMBERP (w->new_normal)) | |
3458 | WSET (w, normal_lines, w->new_normal); | |
1a13852e | 3459 | |
d3d50620 | 3460 | pos = XINT (w->top_line); |
1a13852e MR |
3461 | } |
3462 | ||
d3d50620 | 3463 | if (!NILP (w->vchild)) |
1a13852e MR |
3464 | /* W is a vertical combination. */ |
3465 | { | |
d3d50620 | 3466 | c = XWINDOW (w->vchild); |
1a13852e MR |
3467 | while (c) |
3468 | { | |
3469 | if (horflag) | |
077288cf | 3470 | WSET (c, left_col, make_number (pos)); |
1a13852e | 3471 | else |
077288cf | 3472 | WSET (c, top_line, make_number (pos)); |
d615d6d2 | 3473 | window_resize_apply (c, horflag); |
1a13852e | 3474 | if (!horflag) |
d3d50620 DA |
3475 | pos = pos + XINT (c->total_lines); |
3476 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e MR |
3477 | } |
3478 | } | |
d3d50620 | 3479 | else if (!NILP (w->hchild)) |
1a13852e MR |
3480 | /* W is a horizontal combination. */ |
3481 | { | |
d3d50620 | 3482 | c = XWINDOW (w->hchild); |
1a13852e MR |
3483 | while (c) |
3484 | { | |
3485 | if (horflag) | |
077288cf | 3486 | WSET (c, left_col, make_number (pos)); |
1a13852e | 3487 | else |
077288cf | 3488 | WSET (c, top_line, make_number (pos)); |
d615d6d2 | 3489 | window_resize_apply (c, horflag); |
1a13852e | 3490 | if (horflag) |
d3d50620 DA |
3491 | pos = pos + XINT (c->total_cols); |
3492 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e MR |
3493 | } |
3494 | } | |
3495 | ||
3496 | /* Clear out some redisplay caches. */ | |
80b00b08 DA |
3497 | w->last_modified = 0; |
3498 | w->last_overlay_modified = 0; | |
1a13852e MR |
3499 | } |
3500 | ||
3501 | ||
d615d6d2 | 3502 | DEFUN ("window-resize-apply", Fwindow_resize_apply, Swindow_resize_apply, 1, 2, 0, |
1a13852e MR |
3503 | doc: /* Apply requested size values for window-tree of FRAME. |
3504 | Optional argument HORIZONTAL omitted or nil means apply requested height | |
3505 | values. HORIZONTAL non-nil means apply requested width values. | |
3506 | ||
3507 | This function checks whether the requested values sum up to a valid | |
be7f5545 MR |
3508 | window layout, recursively assigns the new sizes of all child windows |
3509 | and calculates and assigns the new start positions of these windows. | |
1a13852e MR |
3510 | |
3511 | Note: This function does not check any of `window-fixed-size-p', | |
3512 | `window-min-height' or `window-min-width'. All these checks have to | |
3513 | be applied on the Elisp level. */) | |
3514 | (Lisp_Object frame, Lisp_Object horizontal) | |
3515 | { | |
3516 | struct frame *f; | |
3517 | struct window *r; | |
3518 | int horflag = !NILP (horizontal); | |
3519 | ||
3520 | if (NILP (frame)) | |
3521 | frame = selected_frame; | |
3522 | CHECK_LIVE_FRAME (frame); | |
3523 | ||
3524 | f = XFRAME (frame); | |
3525 | r = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3526 | ||
d615d6d2 | 3527 | if (!window_resize_check (r, horflag) |
d3d50620 DA |
3528 | || ! EQ (r->new_total, |
3529 | (horflag ? r->total_cols : r->total_lines))) | |
1a13852e MR |
3530 | return Qnil; |
3531 | ||
3532 | BLOCK_INPUT; | |
d615d6d2 | 3533 | window_resize_apply (r, horflag); |
1a13852e MR |
3534 | |
3535 | windows_or_buffers_changed++; | |
3536 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3537 | ||
3538 | adjust_glyphs (f); | |
3539 | UNBLOCK_INPUT; | |
3540 | ||
3541 | run_window_configuration_change_hook (f); | |
3542 | ||
3543 | return Qt; | |
3544 | } | |
3545 | ||
3546 | ||
3547 | /* Resize frame F's windows when number of lines of F is set to SIZE. | |
3548 | HORFLAG 1 means resize windows when number of columns of F is set to | |
3549 | SIZE. | |
3550 | ||
3551 | This function can delete all windows but the selected one in order to | |
3552 | satisfy the request. The result will be meaningful if and only if | |
3553 | F's windows have meaningful sizes when you call this. */ | |
3554 | void | |
3555 | resize_frame_windows (struct frame *f, int size, int horflag) | |
3556 | { | |
e69b0960 | 3557 | Lisp_Object root = f->root_window; |
1a13852e | 3558 | struct window *r = XWINDOW (root); |
e69b0960 | 3559 | Lisp_Object mini = f->minibuffer_window; |
1a13852e MR |
3560 | struct window *m; |
3561 | /* new_size is the new size of the frame's root window. */ | |
3562 | int new_size = (horflag | |
3563 | ? size | |
3564 | : (size | |
3565 | - FRAME_TOP_MARGIN (f) | |
3566 | - ((FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3567 | ? 1 : 0))); | |
3568 | ||
077288cf | 3569 | WSET (r, top_line, make_number (FRAME_TOP_MARGIN (f))); |
d3d50620 | 3570 | if (NILP (r->vchild) && NILP (r->hchild)) |
1a13852e MR |
3571 | /* For a leaf root window just set the size. */ |
3572 | if (horflag) | |
077288cf | 3573 | WSET (r, total_cols, make_number (new_size)); |
1a13852e | 3574 | else |
077288cf | 3575 | WSET (r, total_lines, make_number (new_size)); |
1a13852e MR |
3576 | else |
3577 | { | |
3578 | /* old_size is the old size of the frame's root window. */ | |
d3d50620 DA |
3579 | int old_size = XFASTINT (horflag ? r->total_cols |
3580 | : r->total_lines); | |
1a13852e MR |
3581 | Lisp_Object delta; |
3582 | ||
3583 | XSETINT (delta, new_size - old_size); | |
3584 | /* Try a "normal" resize first. */ | |
3585 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qnil); | |
3a45383a | 3586 | if (window_resize_check (r, horflag) |
d3d50620 | 3587 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3588 | window_resize_apply (r, horflag); |
1a13852e MR |
3589 | else |
3590 | { | |
3591 | /* Try with "reasonable" minimum sizes next. */ | |
3592 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qt); | |
d615d6d2 | 3593 | if (window_resize_check (r, horflag) |
d3d50620 | 3594 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3595 | window_resize_apply (r, horflag); |
1a13852e MR |
3596 | else |
3597 | { | |
3598 | /* Finally, try with "safe" minimum sizes. */ | |
3599 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qsafe); | |
d615d6d2 | 3600 | if (window_resize_check (r, horflag) |
d3d50620 | 3601 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3602 | window_resize_apply (r, horflag); |
1a13852e MR |
3603 | else |
3604 | { | |
3605 | /* We lost. Delete all windows but the frame's | |
3606 | selected one. */ | |
e69b0960 | 3607 | root = f->selected_window; |
1a13852e MR |
3608 | Fdelete_other_windows_internal (root, Qnil); |
3609 | if (horflag) | |
077288cf | 3610 | WSET (XWINDOW (root), total_cols, make_number (new_size)); |
1a13852e | 3611 | else |
077288cf | 3612 | WSET (XWINDOW (root), total_lines, make_number (new_size)); |
1a13852e MR |
3613 | } |
3614 | } | |
3615 | } | |
3616 | } | |
3617 | ||
3618 | if (FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3619 | { | |
3620 | m = XWINDOW (mini); | |
3621 | if (horflag) | |
077288cf | 3622 | WSET (m, total_cols, make_number (size)); |
1a13852e MR |
3623 | else |
3624 | { | |
3625 | /* Are we sure we always want 1 line here? */ | |
077288cf DA |
3626 | WSET (m, total_lines, make_number (1)); |
3627 | WSET (m, top_line, | |
d3d50620 | 3628 | make_number (XINT (r->top_line) + XINT (r->total_lines))); |
1a13852e MR |
3629 | } |
3630 | } | |
3631 | } | |
3632 | ||
3633 | ||
3634 | DEFUN ("split-window-internal", Fsplit_window_internal, Ssplit_window_internal, 4, 4, 0, | |
3635 | doc: /* Split window OLD. | |
3636 | Second argument TOTAL-SIZE specifies the number of lines or columns of the | |
9397e56f | 3637 | new window. In any case TOTAL-SIZE must be a positive integer. |
1a13852e MR |
3638 | |
3639 | Third argument SIDE nil (or `below') specifies that the new window shall | |
3640 | be located below WINDOW. SIDE `above' means the new window shall be | |
3641 | located above WINDOW. In both cases TOTAL-SIZE specifies the number of | |
3642 | lines of the new window including space reserved for the mode and/or | |
3643 | header line. | |
3644 | ||
3645 | SIDE t (or `right') specifies that the new window shall be located on | |
3646 | the right side of WINDOW. SIDE `left' means the new window shall be | |
3647 | located on the left of WINDOW. In both cases TOTAL-SIZE specifies the | |
3648 | number of columns of the new window including space reserved for fringes | |
3649 | and the scrollbar or a divider column. | |
3650 | ||
3651 | Fourth argument NORMAL-SIZE specifies the normal size of the new window | |
3652 | according to the SIDE argument. | |
3653 | ||
3654 | The new total and normal sizes of all involved windows must have been | |
3655 | set correctly. See the code of `split-window' for how this is done. */) | |
3656 | (Lisp_Object old, Lisp_Object total_size, Lisp_Object side, Lisp_Object normal_size) | |
3657 | { | |
3658 | /* OLD (*o) is the window we have to split. (*p) is either OLD's | |
3659 | parent window or an internal window we have to install as OLD's new | |
3660 | parent. REFERENCE (*r) must denote a live window, or is set to OLD | |
3661 | provided OLD is a leaf window, or to the frame's selected window. | |
3662 | NEW (*n) is the new window created with some parameters taken from | |
3663 | REFERENCE (*r). */ | |
3664 | register Lisp_Object new, frame, reference; | |
3665 | register struct window *o, *p, *n, *r; | |
3666 | struct frame *f; | |
3667 | int horflag | |
3668 | /* HORFLAG is 1 when we split side-by-side, 0 otherwise. */ | |
3669 | = EQ (side, Qt) || EQ (side, Qleft) || EQ (side, Qright); | |
b6f67890 | 3670 | int combination_limit = 0; |
1a13852e MR |
3671 | |
3672 | CHECK_WINDOW (old); | |
3673 | o = XWINDOW (old); | |
3674 | frame = WINDOW_FRAME (o); | |
3675 | f = XFRAME (frame); | |
3676 | ||
3677 | CHECK_NUMBER (total_size); | |
3678 | ||
b6f67890 MR |
3679 | /* Set combination_limit to 1 if we have to make a new parent window. |
3680 | We do that if either `window-combination-limit' is t, or OLD has no | |
3681 | parent, or OLD is ortho-combined. */ | |
3682 | combination_limit = | |
3683 | !NILP (Vwindow_combination_limit) | |
d3d50620 | 3684 | || NILP (o->parent) |
1a13852e | 3685 | || NILP (horflag |
d3d50620 DA |
3686 | ? (XWINDOW (o->parent)->hchild) |
3687 | : (XWINDOW (o->parent)->vchild)); | |
1a13852e MR |
3688 | |
3689 | /* We need a live reference window to initialize some parameters. */ | |
3690 | if (WINDOW_LIVE_P (old)) | |
3691 | /* OLD is live, use it as reference window. */ | |
3692 | reference = old; | |
3693 | else | |
3694 | /* Use the frame's selected window as reference window. */ | |
3695 | reference = FRAME_SELECTED_WINDOW (f); | |
3696 | r = XWINDOW (reference); | |
3697 | ||
3698 | /* The following bugs are caught by `split-window'. */ | |
3699 | if (MINI_WINDOW_P (o)) | |
3700 | error ("Attempt to split minibuffer window"); | |
3701 | else if (XINT (total_size) < (horflag ? 2 : 1)) | |
3702 | error ("Size of new window too small (after split)"); | |
a0c2d0ae MR |
3703 | else if (!combination_limit && !NILP (Vwindow_combination_resize)) |
3704 | /* `window-combination-resize' non-nil means try to resize OLD's siblings | |
1a13852e MR |
3705 | proportionally. */ |
3706 | { | |
d3d50620 | 3707 | p = XWINDOW (o->parent); |
1a13852e | 3708 | /* Temporarily pretend we split the parent window. */ |
077288cf | 3709 | WSET (p, new_total, |
d3d50620 | 3710 | make_number (XINT (horflag ? p->total_cols : p->total_lines) |
077288cf | 3711 | - XINT (total_size))); |
d615d6d2 | 3712 | if (!window_resize_check (p, horflag)) |
1a13852e MR |
3713 | error ("Window sizes don't fit"); |
3714 | else | |
3715 | /* Undo the temporary pretension. */ | |
077288cf | 3716 | WSET (p, new_total, |
d3d50620 | 3717 | horflag ? p->total_cols : p->total_lines); |
1a13852e MR |
3718 | } |
3719 | else | |
3720 | { | |
d615d6d2 | 3721 | if (!window_resize_check (o, horflag)) |
1a13852e | 3722 | error ("Resizing old window failed"); |
d3d50620 DA |
3723 | else if (XINT (total_size) + XINT (o->new_total) |
3724 | != XINT (horflag ? o->total_cols : o->total_lines)) | |
1a13852e MR |
3725 | error ("Sum of sizes of old and new window don't fit"); |
3726 | } | |
3727 | ||
3728 | /* This is our point of no return. */ | |
b6f67890 | 3729 | if (combination_limit) |
1a13852e MR |
3730 | { |
3731 | /* Save the old value of o->normal_cols/lines. It gets corrupted | |
3732 | by make_parent_window and we need it below for assigning it to | |
3733 | p->new_normal. */ | |
3a45383a | 3734 | Lisp_Object new_normal |
d3d50620 | 3735 | = horflag ? o->normal_cols : o->normal_lines; |
1a13852e MR |
3736 | |
3737 | make_parent_window (old, horflag); | |
d3d50620 | 3738 | p = XWINDOW (o->parent); |
b6f67890 MR |
3739 | /* Store value of `window-combination-limit' in new parent's |
3740 | combination_limit slot. */ | |
077288cf | 3741 | WSET (p, combination_limit, Vwindow_combination_limit); |
1a13852e | 3742 | /* These get applied below. */ |
d3d50620 | 3743 | WSET (p, new_total, horflag ? o->total_cols : o->total_lines); |
077288cf | 3744 | WSET (p, new_normal, new_normal); |
1a13852e MR |
3745 | } |
3746 | else | |
d3d50620 | 3747 | p = XWINDOW (o->parent); |
1a13852e MR |
3748 | |
3749 | windows_or_buffers_changed++; | |
3750 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3751 | new = make_window (); | |
3752 | n = XWINDOW (new); | |
077288cf | 3753 | WSET (n, frame, frame); |
d3d50620 | 3754 | WSET (n, parent, o->parent); |
077288cf DA |
3755 | WSET (n, vchild, Qnil); |
3756 | WSET (n, hchild, Qnil); | |
1a13852e MR |
3757 | |
3758 | if (EQ (side, Qabove) || EQ (side, Qleft)) | |
3759 | { | |
d3d50620 DA |
3760 | WSET (n, prev, o->prev); |
3761 | if (NILP (n->prev)) | |
1a13852e | 3762 | if (horflag) |
077288cf | 3763 | WSET (p, hchild, new); |
1a13852e | 3764 | else |
077288cf | 3765 | WSET (p, vchild, new); |
1a13852e | 3766 | else |
d3d50620 | 3767 | WSET (XWINDOW (n->prev), next, new); |
077288cf DA |
3768 | WSET (n, next, old); |
3769 | WSET (o, prev, new); | |
1a13852e MR |
3770 | } |
3771 | else | |
3772 | { | |
d3d50620 DA |
3773 | WSET (n, next, o->next); |
3774 | if (!NILP (n->next)) | |
3775 | WSET (XWINDOW (n->next), prev, new); | |
077288cf DA |
3776 | WSET (n, prev, old); |
3777 | WSET (o, next, new); | |
1a13852e MR |
3778 | } |
3779 | ||
077288cf DA |
3780 | WSET (n, buffer, Qt); |
3781 | WSET (n, window_end_valid, Qnil); | |
1a13852e MR |
3782 | memset (&n->last_cursor, 0, sizeof n->last_cursor); |
3783 | ||
3784 | /* Get special geometry settings from reference window. */ | |
d3d50620 DA |
3785 | WSET (n, left_margin_cols, r->left_margin_cols); |
3786 | WSET (n, right_margin_cols, r->right_margin_cols); | |
3787 | WSET (n, left_fringe_width, r->left_fringe_width); | |
3788 | WSET (n, right_fringe_width, r->right_fringe_width); | |
1a13852e | 3789 | n->fringes_outside_margins = r->fringes_outside_margins; |
d3d50620 DA |
3790 | WSET (n, scroll_bar_width, r->scroll_bar_width); |
3791 | WSET (n, vertical_scroll_bar_type, r->vertical_scroll_bar_type); | |
1a13852e | 3792 | |
1a13852e MR |
3793 | /* Directly assign orthogonal coordinates and sizes. */ |
3794 | if (horflag) | |
3795 | { | |
d3d50620 DA |
3796 | WSET (n, top_line, o->top_line); |
3797 | WSET (n, total_lines, o->total_lines); | |
1a13852e MR |
3798 | } |
3799 | else | |
3800 | { | |
d3d50620 DA |
3801 | WSET (n, left_col, o->left_col); |
3802 | WSET (n, total_cols, o->total_cols); | |
1a13852e MR |
3803 | } |
3804 | ||
d615d6d2 | 3805 | /* Iso-coordinates and sizes are assigned by window_resize_apply, |
1a13852e | 3806 | get them ready here. */ |
077288cf DA |
3807 | WSET (n, new_total, total_size); |
3808 | WSET (n, new_normal, normal_size); | |
1a13852e MR |
3809 | |
3810 | BLOCK_INPUT; | |
d615d6d2 | 3811 | window_resize_apply (p, horflag); |
1a13852e MR |
3812 | adjust_glyphs (f); |
3813 | /* Set buffer of NEW to buffer of reference window. Don't run | |
3814 | any hooks. */ | |
d3d50620 | 3815 | set_window_buffer (new, r->buffer, 0, 1); |
1a13852e MR |
3816 | UNBLOCK_INPUT; |
3817 | ||
3818 | /* Maybe we should run the scroll functions in Elisp (which already | |
3819 | runs the configuration change hook). */ | |
3820 | if (! NILP (Vwindow_scroll_functions)) | |
3821 | run_hook_with_args_2 (Qwindow_scroll_functions, new, | |
d3d50620 | 3822 | Fmarker_position (n->start)); |
1a13852e MR |
3823 | /* Return NEW. */ |
3824 | return new; | |
3825 | } | |
3826 | ||
3827 | ||
3828 | DEFUN ("delete-window-internal", Fdelete_window_internal, Sdelete_window_internal, 1, 1, 0, | |
3829 | doc: /* Remove WINDOW from its frame. | |
87e68db4 JB |
3830 | WINDOW defaults to the selected window. Return nil. |
3831 | Signal an error when WINDOW is the only window on its frame. */) | |
1a13852e MR |
3832 | (register Lisp_Object window) |
3833 | { | |
3834 | register Lisp_Object parent, sibling, frame, root; | |
3835 | struct window *w, *p, *s, *r; | |
3836 | struct frame *f; | |
3837 | int horflag; | |
3838 | int before_sibling = 0; | |
3839 | ||
3840 | w = decode_any_window (window); | |
d3d50620 | 3841 | CHECK_LIVE_FRAME (w->frame); |
d10a51dc | 3842 | |
1a13852e | 3843 | XSETWINDOW (window, w); |
d3d50620 DA |
3844 | if (NILP (w->buffer) |
3845 | && NILP (w->hchild) && NILP (w->vchild)) | |
1a13852e MR |
3846 | /* It's a no-op to delete an already deleted window. */ |
3847 | return Qnil; | |
3848 | ||
d3d50620 | 3849 | parent = w->parent; |
1a13852e MR |
3850 | if (NILP (parent)) |
3851 | /* Never delete a minibuffer or frame root window. */ | |
3852 | error ("Attempt to delete minibuffer or sole ordinary window"); | |
d3d50620 | 3853 | else if (NILP (w->prev) && NILP (w->next)) |
1a13852e MR |
3854 | /* Rather bow out here, this case should be handled on the Elisp |
3855 | level. */ | |
3856 | error ("Attempt to delete sole window of parent"); | |
3857 | ||
3858 | p = XWINDOW (parent); | |
d3d50620 | 3859 | horflag = NILP (p->vchild); |
1a13852e MR |
3860 | |
3861 | frame = WINDOW_FRAME (w); | |
3862 | f = XFRAME (frame); | |
3863 | ||
3864 | root = FRAME_ROOT_WINDOW (f); | |
3865 | r = XWINDOW (root); | |
3866 | ||
3867 | /* Unlink WINDOW from window tree. */ | |
d3d50620 | 3868 | if (NILP (w->prev)) |
1a13852e MR |
3869 | /* Get SIBLING below (on the right of) WINDOW. */ |
3870 | { | |
3871 | /* before_sibling 1 means WINDOW is the first child of its | |
3872 | parent and thus before the sibling. */ | |
3873 | before_sibling = 1; | |
d3d50620 | 3874 | sibling = w->next; |
1a13852e | 3875 | s = XWINDOW (sibling); |
077288cf | 3876 | WSET (s, prev, Qnil); |
1a13852e | 3877 | if (horflag) |
077288cf | 3878 | WSET (p, hchild, sibling); |
1a13852e | 3879 | else |
077288cf | 3880 | WSET (p, vchild, sibling); |
1a13852e MR |
3881 | } |
3882 | else | |
3883 | /* Get SIBLING above (on the left of) WINDOW. */ | |
3884 | { | |
d3d50620 | 3885 | sibling = w->prev; |
1a13852e | 3886 | s = XWINDOW (sibling); |
d3d50620 DA |
3887 | WSET (s, next, w->next); |
3888 | if (!NILP (s->next)) | |
3889 | WSET (XWINDOW (s->next), prev, sibling); | |
7ab12479 JB |
3890 | } |
3891 | ||
d615d6d2 | 3892 | if (window_resize_check (r, horflag) |
d3d50620 DA |
3893 | && EQ (r->new_total, |
3894 | (horflag ? r->total_cols : r->total_lines))) | |
562dd5e9 MR |
3895 | /* We can delete WINDOW now. */ |
3896 | { | |
95986d52 | 3897 | |
562dd5e9 MR |
3898 | /* Block input. */ |
3899 | BLOCK_INPUT; | |
d615d6d2 | 3900 | window_resize_apply (p, horflag); |
0d384044 | 3901 | |
95986d52 CY |
3902 | /* If this window is referred to by the dpyinfo's mouse |
3903 | highlight, invalidate that slot to be safe (Bug#9904). */ | |
4c5501e9 EZ |
3904 | if (!FRAME_INITIAL_P (f)) |
3905 | { | |
3906 | Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f); | |
3907 | ||
3908 | if (EQ (hlinfo->mouse_face_window, window)) | |
3909 | hlinfo->mouse_face_window = Qnil; | |
3910 | } | |
95986d52 | 3911 | |
562dd5e9 MR |
3912 | windows_or_buffers_changed++; |
3913 | Vwindow_list = Qnil; | |
3914 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
0d384044 | 3915 | |
077288cf | 3916 | WSET (w, next, Qnil); /* Don't delete w->next too. */ |
562dd5e9 | 3917 | free_window_matrices (w); |
bd99e242 | 3918 | |
d3d50620 | 3919 | if (!NILP (w->vchild)) |
0d384044 | 3920 | { |
d3d50620 | 3921 | delete_all_child_windows (w->vchild); |
077288cf | 3922 | WSET (w, vchild, Qnil); |
0d384044 | 3923 | } |
d3d50620 | 3924 | else if (!NILP (w->hchild)) |
bd99e242 | 3925 | { |
d3d50620 | 3926 | delete_all_child_windows (w->hchild); |
077288cf | 3927 | WSET (w, hchild, Qnil); |
bd99e242 | 3928 | } |
d3d50620 | 3929 | else if (!NILP (w->buffer)) |
bd99e242 | 3930 | { |
562dd5e9 | 3931 | unshow_buffer (w); |
d3d50620 DA |
3932 | unchain_marker (XMARKER (w->pointm)); |
3933 | unchain_marker (XMARKER (w->start)); | |
077288cf | 3934 | WSET (w, buffer, Qnil); |
bd99e242 RS |
3935 | } |
3936 | ||
d3d50620 | 3937 | if (NILP (s->prev) && NILP (s->next)) |
562dd5e9 MR |
3938 | /* A matrjoshka where SIBLING has become the only child of |
3939 | PARENT. */ | |
c32de52a | 3940 | { |
562dd5e9 MR |
3941 | /* Put SIBLING into PARENT's place. */ |
3942 | replace_window (parent, sibling, 0); | |
3943 | /* Have SIBLING inherit the following three slot values from | |
b6f67890 | 3944 | PARENT (the combination_limit slot is not inherited). */ |
d3d50620 DA |
3945 | WSET (s, normal_cols, p->normal_cols); |
3946 | WSET (s, normal_lines, p->normal_lines); | |
562dd5e9 | 3947 | /* Mark PARENT as deleted. */ |
077288cf DA |
3948 | WSET (p, vchild, Qnil); |
3949 | WSET (p, hchild, Qnil); | |
562dd5e9 MR |
3950 | /* Try to merge SIBLING into its new parent. */ |
3951 | recombine_windows (sibling); | |
c32de52a RS |
3952 | } |
3953 | ||
562dd5e9 MR |
3954 | adjust_glyphs (f); |
3955 | ||
3956 | if (!WINDOW_LIVE_P (FRAME_SELECTED_WINDOW (f))) | |
3957 | /* We deleted the frame's selected window. */ | |
0d384044 | 3958 | { |
562dd5e9 MR |
3959 | /* Use the frame's first window as fallback ... */ |
3960 | Lisp_Object new_selected_window = Fframe_first_window (frame); | |
3961 | /* ... but preferably use its most recently used window. */ | |
3962 | Lisp_Object mru_window; | |
0d384044 | 3963 | |
562dd5e9 MR |
3964 | /* `get-mru-window' might fail for some reason so play it safe |
3965 | - promote the first window _without recording it_ first. */ | |
3966 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
3967 | Fselect_window (new_selected_window, Qt); | |
3968 | else | |
edd74c35 | 3969 | FSET (f, selected_window, new_selected_window); |
0d384044 | 3970 | |
562dd5e9 | 3971 | UNBLOCK_INPUT; |
0d384044 | 3972 | |
562dd5e9 MR |
3973 | /* Now look whether `get-mru-window' gets us something. */ |
3974 | mru_window = call1 (Qget_mru_window, frame); | |
3975 | if (WINDOW_LIVE_P (mru_window) | |
d3d50620 | 3976 | && EQ (XWINDOW (mru_window)->frame, frame)) |
562dd5e9 | 3977 | new_selected_window = mru_window; |
bd99e242 | 3978 | |
562dd5e9 MR |
3979 | /* If all ended up well, we now promote the mru window. */ |
3980 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
3981 | Fselect_window (new_selected_window, Qnil); | |
3982 | else | |
edd74c35 | 3983 | FSET (f, selected_window, new_selected_window); |
0d384044 RS |
3984 | } |
3985 | else | |
562dd5e9 | 3986 | UNBLOCK_INPUT; |
0d384044 | 3987 | |
562dd5e9 MR |
3988 | /* Must be run by the caller: |
3989 | run_window_configuration_change_hook (f); */ | |
0d384044 | 3990 | } |
562dd5e9 MR |
3991 | else |
3992 | /* We failed: Relink WINDOW into window tree. */ | |
0d384044 | 3993 | { |
562dd5e9 MR |
3994 | if (before_sibling) |
3995 | { | |
077288cf | 3996 | WSET (s, prev, window); |
562dd5e9 | 3997 | if (horflag) |
077288cf | 3998 | WSET (p, hchild, window); |
562dd5e9 | 3999 | else |
077288cf | 4000 | WSET (p, vchild, window); |
562dd5e9 MR |
4001 | } |
4002 | else | |
4003 | { | |
077288cf | 4004 | WSET (s, next, window); |
d3d50620 DA |
4005 | if (!NILP (w->next)) |
4006 | WSET (XWINDOW (w->next), prev, window); | |
562dd5e9 MR |
4007 | } |
4008 | error ("Deletion failed"); | |
0d384044 RS |
4009 | } |
4010 | ||
0d384044 RS |
4011 | return Qnil; |
4012 | } | |
f984d4fc GM |
4013 | \f |
4014 | /*********************************************************************** | |
4015 | Resizing Mini-Windows | |
4016 | ***********************************************************************/ | |
4017 | ||
562dd5e9 MR |
4018 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we |
4019 | can. */ | |
4020 | void | |
4021 | grow_mini_window (struct window *w, int delta) | |
f984d4fc | 4022 | { |
d3d50620 | 4023 | struct frame *f = XFRAME (w->frame); |
562dd5e9 MR |
4024 | struct window *r; |
4025 | Lisp_Object root, value; | |
f984d4fc | 4026 | |
a54e2c05 DA |
4027 | eassert (MINI_WINDOW_P (w)); |
4028 | eassert (delta >= 0); | |
f984d4fc | 4029 | |
562dd5e9 MR |
4030 | root = FRAME_ROOT_WINDOW (f); |
4031 | r = XWINDOW (root); | |
5386012d MR |
4032 | value = call2 (Qwindow_resize_root_window_vertically, |
4033 | root, make_number (- delta)); | |
d615d6d2 | 4034 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4035 | { |
562dd5e9 | 4036 | BLOCK_INPUT; |
d615d6d2 | 4037 | window_resize_apply (r, 0); |
f984d4fc | 4038 | |
562dd5e9 | 4039 | /* Grow the mini-window. */ |
077288cf | 4040 | WSET (w, top_line, |
d3d50620 | 4041 | make_number (XFASTINT (r->top_line) + XFASTINT (r->total_lines))); |
077288cf | 4042 | WSET (w, total_lines, |
d3d50620 | 4043 | make_number (XFASTINT (w->total_lines) - XINT (value))); |
80b00b08 DA |
4044 | w->last_modified = 0; |
4045 | w->last_overlay_modified = 0; | |
f984d4fc | 4046 | |
562dd5e9 MR |
4047 | adjust_glyphs (f); |
4048 | UNBLOCK_INPUT; | |
f984d4fc GM |
4049 | } |
4050 | } | |
4051 | ||
4052 | ||
562dd5e9 MR |
4053 | /* Shrink mini-window W. */ |
4054 | void | |
4055 | shrink_mini_window (struct window *w) | |
f984d4fc | 4056 | { |
d3d50620 | 4057 | struct frame *f = XFRAME (w->frame); |
562dd5e9 MR |
4058 | struct window *r; |
4059 | Lisp_Object root, value; | |
4060 | EMACS_INT size; | |
43b4a21f | 4061 | |
a54e2c05 | 4062 | eassert (MINI_WINDOW_P (w)); |
177c0ea7 | 4063 | |
d3d50620 | 4064 | size = XINT (w->total_lines); |
562dd5e9 MR |
4065 | if (size > 1) |
4066 | { | |
4067 | root = FRAME_ROOT_WINDOW (f); | |
4068 | r = XWINDOW (root); | |
5386012d | 4069 | value = call2 (Qwindow_resize_root_window_vertically, |
562dd5e9 | 4070 | root, make_number (size - 1)); |
d615d6d2 | 4071 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4072 | { |
562dd5e9 | 4073 | BLOCK_INPUT; |
d615d6d2 | 4074 | window_resize_apply (r, 0); |
43b4a21f | 4075 | |
562dd5e9 | 4076 | /* Shrink the mini-window. */ |
077288cf | 4077 | WSET (w, top_line, |
d3d50620 | 4078 | make_number (XFASTINT (r->top_line) + XFASTINT (r->total_lines))); |
077288cf | 4079 | WSET (w, total_lines, make_number (1)); |
43b4a21f | 4080 | |
80b00b08 DA |
4081 | w->last_modified = 0; |
4082 | w->last_overlay_modified = 0; | |
43b4a21f | 4083 | |
562dd5e9 MR |
4084 | adjust_glyphs (f); |
4085 | UNBLOCK_INPUT; | |
f984d4fc | 4086 | } |
562dd5e9 MR |
4087 | /* If the above failed for whatever strange reason we must make a |
4088 | one window frame here. The same routine will be needed when | |
4089 | shrinking the frame (and probably when making the initial | |
4090 | *scratch* window). For the moment leave things as they are. */ | |
f984d4fc GM |
4091 | } |
4092 | } | |
4093 | ||
562dd5e9 MR |
4094 | DEFUN ("resize-mini-window-internal", Fresize_mini_window_internal, Sresize_mini_window_internal, 1, 1, 0, |
4095 | doc: /* Resize minibuffer window WINDOW. */) | |
4096 | (Lisp_Object window) | |
f984d4fc | 4097 | { |
562dd5e9 MR |
4098 | struct window *w = XWINDOW (window); |
4099 | struct window *r; | |
4100 | struct frame *f; | |
4101 | int height; | |
177c0ea7 | 4102 | |
562dd5e9 | 4103 | CHECK_WINDOW (window); |
d3d50620 | 4104 | f = XFRAME (w->frame); |
177c0ea7 | 4105 | |
d3d50620 | 4106 | if (!EQ (FRAME_MINIBUF_WINDOW (XFRAME (w->frame)), window)) |
562dd5e9 MR |
4107 | error ("Not a valid minibuffer window"); |
4108 | else if (FRAME_MINIBUF_ONLY_P (f)) | |
4109 | error ("Cannot resize a minibuffer-only frame"); | |
177c0ea7 | 4110 | |
562dd5e9 | 4111 | r = XWINDOW (FRAME_ROOT_WINDOW (f)); |
d3d50620 | 4112 | height = XINT (r->total_lines) + XINT (w->total_lines); |
d615d6d2 | 4113 | if (window_resize_check (r, 0) |
d3d50620 DA |
4114 | && XINT (w->new_total) > 0 |
4115 | && height == XINT (r->new_total) + XINT (w->new_total)) | |
f984d4fc | 4116 | { |
562dd5e9 | 4117 | BLOCK_INPUT; |
d615d6d2 | 4118 | window_resize_apply (r, 0); |
f984d4fc | 4119 | |
d3d50620 | 4120 | WSET (w, total_lines, w->new_total); |
077288cf | 4121 | WSET (w, top_line, |
d3d50620 | 4122 | make_number (XINT (r->top_line) + XINT (r->total_lines))); |
177c0ea7 | 4123 | |
562dd5e9 MR |
4124 | windows_or_buffers_changed++; |
4125 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
f984d4fc | 4126 | adjust_glyphs (f); |
562dd5e9 | 4127 | UNBLOCK_INPUT; |
f984d4fc | 4128 | |
562dd5e9 MR |
4129 | run_window_configuration_change_hook (f); |
4130 | return Qt; | |
86c8e823 | 4131 | } |
562dd5e9 | 4132 | else error ("Failed to resize minibuffer window"); |
f984d4fc | 4133 | } |
562dd5e9 | 4134 | \f |
5500c422 GM |
4135 | /* Mark window cursors off for all windows in the window tree rooted |
4136 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4137 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4138 | the frame are cleared. */ | |
4139 | ||
4140 | void | |
971de7fb | 4141 | mark_window_cursors_off (struct window *w) |
5500c422 GM |
4142 | { |
4143 | while (w) | |
4144 | { | |
d3d50620 DA |
4145 | if (!NILP (w->hchild)) |
4146 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4147 | else if (!NILP (w->vchild)) | |
4148 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
5500c422 GM |
4149 | else |
4150 | w->phys_cursor_on_p = 0; | |
4151 | ||
d3d50620 | 4152 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
5500c422 GM |
4153 | } |
4154 | } | |
4155 | ||
4156 | ||
e9c195b1 | 4157 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4158 | |
4159 | int | |
971de7fb | 4160 | window_internal_height (struct window *w) |
7ab12479 | 4161 | { |
d3d50620 | 4162 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4163 | |
e9c195b1 GM |
4164 | if (!MINI_WINDOW_P (w)) |
4165 | { | |
d3d50620 DA |
4166 | if (!NILP (w->parent) |
4167 | || !NILP (w->vchild) | |
4168 | || !NILP (w->hchild) | |
4169 | || !NILP (w->next) | |
4170 | || !NILP (w->prev) | |
e9c195b1 GM |
4171 | || WINDOW_WANTS_MODELINE_P (w)) |
4172 | --ht; | |
7ab12479 | 4173 | |
e9c195b1 GM |
4174 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4175 | --ht; | |
4176 | } | |
7ab12479 JB |
4177 | |
4178 | return ht; | |
4179 | } | |
5500c422 GM |
4180 | \f |
4181 | /************************************************************************ | |
4182 | Window Scrolling | |
4183 | ***********************************************************************/ | |
535e0b8e | 4184 | |
5500c422 | 4185 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4186 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4187 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4188 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4189 | means don't signal an error if we try to move over BEGV or ZV, | |
4190 | respectively. */ | |
7ab12479 | 4191 | |
101d1605 | 4192 | static void |
d311d28c | 4193 | window_scroll (Lisp_Object window, EMACS_INT n, int whole, int noerror) |
5500c422 | 4194 | { |
cba59f77 | 4195 | immediate_quit = 1; |
d311d28c | 4196 | n = clip_to_bounds (INT_MIN, n, INT_MAX); |
cba59f77 | 4197 | |
5500c422 GM |
4198 | /* If we must, use the pixel-based version which is much slower than |
4199 | the line-based one but can handle varying line heights. */ | |
d3d50620 | 4200 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) |
5500c422 GM |
4201 | window_scroll_pixel_based (window, n, whole, noerror); |
4202 | else | |
4203 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4204 | |
4205 | immediate_quit = 0; | |
5500c422 GM |
4206 | } |
4207 | ||
4208 | ||
4209 | /* Implementation of window_scroll that works based on pixel line | |
4210 | heights. See the comment of window_scroll for parameter | |
4211 | descriptions. */ | |
4212 | ||
4213 | static void | |
971de7fb | 4214 | window_scroll_pixel_based (Lisp_Object window, int n, int whole, int noerror) |
5500c422 GM |
4215 | { |
4216 | struct it it; | |
4217 | struct window *w = XWINDOW (window); | |
4218 | struct text_pos start; | |
5500c422 | 4219 | int this_scroll_margin; |
9d14503e | 4220 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5cdb3cf3 | 4221 | int vscrolled = 0; |
5a857365 | 4222 | int x, y, rtop, rbot, rowh, vpos; |
57b3e30b | 4223 | void *itdata = NULL; |
5500c422 | 4224 | |
d3d50620 | 4225 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
f0ee99a0 EZ |
4226 | /* Scrolling a minibuffer window via scroll bar when the echo area |
4227 | shows long text sometimes resets the minibuffer contents behind | |
4228 | our backs. */ | |
4229 | if (CHARPOS (start) > ZV) | |
4230 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
177c0ea7 | 4231 | |
5500c422 | 4232 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4233 | the screen. Allow PT to be partially visible, otherwise |
4234 | something like (scroll-down 1) with PT in the line before | |
4235 | the partially visible one would recenter. */ | |
5a857365 KS |
4236 | |
4237 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 | 4238 | { |
57b3e30b | 4239 | itdata = bidi_shelve_cache (); |
5500c422 GM |
4240 | /* Move backward half the height of the window. Performance note: |
4241 | vmotion used here is about 10% faster, but would give wrong | |
4242 | results for variable height lines. */ | |
4243 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4244 | it.current_y = it.last_visible_y; | |
f204989e | 4245 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4246 | |
5500c422 GM |
4247 | /* The function move_iterator_vertically may move over more than |
4248 | the specified y-distance. If it->w is small, e.g. a | |
4249 | mini-buffer window, we may end up in front of the window's | |
4250 | display area. This is the case when Start displaying at the | |
4251 | start of the line containing PT in this case. */ | |
4252 | if (it.current_y <= 0) | |
4253 | { | |
4254 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4255 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4256 | it.current_y = 0; |
4257 | } | |
4258 | ||
4259 | start = it.current.pos; | |
35928349 | 4260 | bidi_unshelve_cache (itdata, 0); |
5500c422 | 4261 | } |
e56263e5 KS |
4262 | else if (auto_window_vscroll_p) |
4263 | { | |
5a857365 | 4264 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
4265 | { |
4266 | int px; | |
4267 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4268 | if (whole) | |
e856c216 KS |
4269 | dy = max ((window_box_height (w) |
4270 | - next_screen_context_lines * dy), | |
4271 | dy); | |
e56263e5 KS |
4272 | dy *= n; |
4273 | ||
5a857365 | 4274 | if (n < 0) |
e56263e5 | 4275 | { |
5a857365 KS |
4276 | /* Only vscroll backwards if already vscrolled forwards. */ |
4277 | if (w->vscroll < 0 && rtop > 0) | |
4278 | { | |
4279 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
4280 | Fset_window_vscroll (window, make_number (px), Qt); | |
4281 | return; | |
4282 | } | |
e56263e5 | 4283 | } |
5a857365 | 4284 | if (n > 0) |
e56263e5 | 4285 | { |
5a857365 KS |
4286 | /* Do vscroll if already vscrolled or only display line. */ |
4287 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
4288 | { | |
4289 | px = max (0, -w->vscroll + min (rbot, dy)); | |
4290 | Fset_window_vscroll (window, make_number (px), Qt); | |
4291 | return; | |
4292 | } | |
4293 | ||
4294 | /* Maybe modify window start instead of scrolling. */ | |
4295 | if (rbot > 0 || w->vscroll < 0) | |
4296 | { | |
d311d28c | 4297 | ptrdiff_t spos; |
5a857365 KS |
4298 | |
4299 | Fset_window_vscroll (window, make_number (0), Qt); | |
4300 | /* If there are other text lines above the current row, | |
4301 | move window start to current row. Else to next row. */ | |
4302 | if (rbot > 0) | |
4303 | spos = XINT (Fline_beginning_position (Qnil)); | |
4304 | else | |
4305 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
d3d50620 DA |
4306 | set_marker_restricted (w->start, make_number (spos), |
4307 | w->buffer); | |
c98ff5dd DA |
4308 | w->start_at_line_beg = 1; |
4309 | w->update_mode_line = 1; | |
80b00b08 DA |
4310 | w->last_modified = 0; |
4311 | w->last_overlay_modified = 0; | |
5a857365 KS |
4312 | /* Set force_start so that redisplay_window will run the |
4313 | window-scroll-functions. */ | |
c98ff5dd | 4314 | w->force_start = 1; |
5a857365 KS |
4315 | return; |
4316 | } | |
e56263e5 KS |
4317 | } |
4318 | } | |
5a857365 | 4319 | /* Cancel previous vscroll. */ |
e56263e5 KS |
4320 | Fset_window_vscroll (window, make_number (0), Qt); |
4321 | } | |
5500c422 | 4322 | |
57b3e30b | 4323 | itdata = bidi_shelve_cache (); |
d0c38d63 | 4324 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
4325 | point in the same window line as it is now, so get that line. */ |
4326 | if (!NILP (Vscroll_preserve_screen_position)) | |
4327 | { | |
c525d842 | 4328 | /* We preserve the goal pixel coordinate across consecutive |
a4b000fb JL |
4329 | calls to scroll-up, scroll-down and other commands that |
4330 | have the `scroll-command' property. This avoids the | |
c525d842 CY |
4331 | possibility of point becoming "stuck" on a tall line when |
4332 | scrolling by one line. */ | |
66fe93d1 | 4333 | if (window_scroll_pixel_based_preserve_y < 0 |
1344aad4 TT |
4334 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4335 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c525d842 CY |
4336 | { |
4337 | start_display (&it, w, start); | |
4338 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 4339 | window_scroll_pixel_based_preserve_y = it.current_y; |
c876b227 | 4340 | window_scroll_pixel_based_preserve_x = it.current_x; |
c525d842 | 4341 | } |
5500c422 GM |
4342 | } |
4343 | else | |
c876b227 SM |
4344 | window_scroll_pixel_based_preserve_y |
4345 | = window_scroll_pixel_based_preserve_x = -1; | |
5500c422 GM |
4346 | |
4347 | /* Move iterator it from start the specified distance forward or | |
4348 | backward. The result is the new window start. */ | |
4349 | start_display (&it, w, start); | |
4350 | if (whole) | |
4351 | { | |
d311d28c | 4352 | ptrdiff_t start_pos = IT_CHARPOS (it); |
e856c216 KS |
4353 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); |
4354 | dy = max ((window_box_height (w) | |
4355 | - next_screen_context_lines * dy), | |
4356 | dy) * n; | |
d72340d4 GM |
4357 | |
4358 | /* Note that move_it_vertically always moves the iterator to the | |
4359 | start of a line. So, if the last line doesn't have a newline, | |
4360 | we would end up at the start of the line ending at ZV. */ | |
4361 | if (dy <= 0) | |
e856c216 KS |
4362 | { |
4363 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 4364 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
4365 | looking at an image that is taller that the window height. */ |
4366 | while (start_pos == IT_CHARPOS (it) | |
4367 | && start_pos > BEGV) | |
e4cc2dfc | 4368 | move_it_by_lines (&it, -1); |
e856c216 | 4369 | } |
d72340d4 | 4370 | else if (dy > 0) |
bed83ee4 | 4371 | { |
bed83ee4 KS |
4372 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
4373 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 4374 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
4375 | looking at an image that is taller that the window height. */ |
4376 | while (start_pos == IT_CHARPOS (it) | |
4377 | && start_pos < ZV) | |
e4cc2dfc | 4378 | move_it_by_lines (&it, 1); |
bed83ee4 | 4379 | } |
5500c422 GM |
4380 | } |
4381 | else | |
e4cc2dfc | 4382 | move_it_by_lines (&it, n); |
5500c422 | 4383 | |
96ae58c8 RS |
4384 | /* We failed if we find ZV is already on the screen (scrolling up, |
4385 | means there's nothing past the end), or if we can't start any | |
4386 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 4387 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 4388 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 4389 | { |
5cdb3cf3 MB |
4390 | if (IT_CHARPOS (it) == ZV) |
4391 | { | |
07ce8b53 RS |
4392 | if (it.current_y < it.last_visible_y |
4393 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 4394 | > it.last_visible_y)) |
a74eca50 GM |
4395 | { |
4396 | /* The last line was only partially visible, make it fully | |
4397 | visible. */ | |
4398 | w->vscroll = (it.last_visible_y | |
4399 | - it.current_y + it.max_ascent + it.max_descent); | |
4400 | adjust_glyphs (it.f); | |
4401 | } | |
5cdb3cf3 | 4402 | else |
57b3e30b | 4403 | { |
35928349 | 4404 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
4405 | if (noerror) |
4406 | return; | |
4407 | else if (n < 0) /* could happen with empty buffers */ | |
4408 | xsignal0 (Qbeginning_of_buffer); | |
4409 | else | |
4410 | xsignal0 (Qend_of_buffer); | |
4411 | } | |
5cdb3cf3 | 4412 | } |
5500c422 | 4413 | else |
5cdb3cf3 MB |
4414 | { |
4415 | if (w->vscroll != 0) | |
4416 | /* The first line was only partially visible, make it fully | |
4417 | visible. */ | |
4418 | w->vscroll = 0; | |
5cdb3cf3 | 4419 | else |
57b3e30b | 4420 | { |
35928349 | 4421 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
4422 | if (noerror) |
4423 | return; | |
4424 | else | |
4425 | xsignal0 (Qbeginning_of_buffer); | |
4426 | } | |
5cdb3cf3 MB |
4427 | } |
4428 | ||
4429 | /* If control gets here, then we vscrolled. */ | |
4430 | ||
d3d50620 | 4431 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
5cdb3cf3 MB |
4432 | |
4433 | /* Don't try to change the window start below. */ | |
4434 | vscrolled = 1; | |
5500c422 GM |
4435 | } |
4436 | ||
5cdb3cf3 MB |
4437 | if (! vscrolled) |
4438 | { | |
d311d28c PE |
4439 | ptrdiff_t pos = IT_CHARPOS (it); |
4440 | ptrdiff_t bytepos; | |
e68def1e AS |
4441 | |
4442 | /* If in the middle of a multi-glyph character move forward to | |
4443 | the next character. */ | |
4444 | if (in_display_vector_p (&it)) | |
4445 | { | |
4446 | ++pos; | |
4447 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
4448 | } | |
4449 | ||
5cdb3cf3 | 4450 | /* Set the window start, and set up the window for redisplay. */ |
d3d50620 DA |
4451 | set_marker_restricted (w->start, make_number (pos), |
4452 | w->buffer); | |
4453 | bytepos = XMARKER (w->start)->bytepos; | |
c98ff5dd DA |
4454 | w->start_at_line_beg = (pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n'); |
4455 | w->update_mode_line = 1; | |
80b00b08 DA |
4456 | w->last_modified = 0; |
4457 | w->last_overlay_modified = 0; | |
5cdb3cf3 MB |
4458 | /* Set force_start so that redisplay_window will run the |
4459 | window-scroll-functions. */ | |
c98ff5dd | 4460 | w->force_start = 1; |
5cdb3cf3 | 4461 | } |
177c0ea7 | 4462 | |
dc297565 RS |
4463 | /* The rest of this function uses current_y in a nonstandard way, |
4464 | not including the height of the header line if any. */ | |
5500c422 | 4465 | it.current_y = it.vpos = 0; |
177c0ea7 | 4466 | |
940f53e5 RS |
4467 | /* Move PT out of scroll margins. |
4468 | This code wants current_y to be zero at the window start position | |
4469 | even if there is a header line. */ | |
4470 | this_scroll_margin = max (0, scroll_margin); | |
3a45383a | 4471 | this_scroll_margin |
d3d50620 | 4472 | = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); |
940f53e5 RS |
4473 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); |
4474 | ||
4475 | if (n > 0) | |
5500c422 | 4476 | { |
940f53e5 RS |
4477 | /* We moved the window start towards ZV, so PT may be now |
4478 | in the scroll margin at the top. */ | |
4479 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
4480 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
4481 | && (NILP (Vscroll_preserve_screen_position) | |
4482 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4483 | /* We found PT at a legitimate height. Leave it alone. */ |
4484 | ; | |
66fe93d1 | 4485 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4486 | { |
fa3c3426 RS |
4487 | /* If we have a header line, take account of it. |
4488 | This is necessary because we set it.current_y to 0, above. */ | |
c876b227 SM |
4489 | move_it_to (&it, -1, |
4490 | window_scroll_pixel_based_preserve_x, | |
66fe93d1 LT |
4491 | window_scroll_pixel_based_preserve_y |
4492 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c876b227 | 4493 | -1, MOVE_TO_Y | MOVE_TO_X); |
940f53e5 RS |
4494 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4495 | } | |
4496 | else | |
5500c422 | 4497 | { |
5500c422 | 4498 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
4499 | { |
4500 | int prev = it.current_y; | |
e4cc2dfc | 4501 | move_it_by_lines (&it, 1); |
e9b2c961 RS |
4502 | if (prev == it.current_y) |
4503 | break; | |
4504 | } | |
5500c422 GM |
4505 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4506 | } | |
940f53e5 RS |
4507 | } |
4508 | else if (n < 0) | |
4509 | { | |
d311d28c | 4510 | ptrdiff_t charpos, bytepos; |
aed328bf | 4511 | int partial_p; |
940f53e5 | 4512 | |
66fe93d1 LT |
4513 | /* Save our position, for the |
4514 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
4515 | charpos = IT_CHARPOS (it); |
4516 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 4517 | |
940f53e5 RS |
4518 | /* We moved the window start towards BEGV, so PT may be now |
4519 | in the scroll margin at the bottom. */ | |
4520 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
4521 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
4522 | - this_scroll_margin - 1), | |
4523 | -1, | |
940f53e5 RS |
4524 | MOVE_TO_POS | MOVE_TO_Y); |
4525 | ||
aed328bf KS |
4526 | /* Save our position, in case it's correct. */ |
4527 | charpos = IT_CHARPOS (it); | |
4528 | bytepos = IT_BYTEPOS (it); | |
4529 | ||
4530 | /* See if point is on a partially visible line at the end. */ | |
4531 | if (it.what == IT_EOB) | |
4532 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
4533 | else | |
4534 | { | |
e4cc2dfc | 4535 | move_it_by_lines (&it, 1); |
aed328bf KS |
4536 | partial_p = it.current_y > it.last_visible_y; |
4537 | } | |
4538 | ||
bdf4ec93 RS |
4539 | if (charpos == PT && !partial_p |
4540 | && (NILP (Vscroll_preserve_screen_position) | |
4541 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4542 | /* We found PT before we found the display margin, so PT is ok. */ |
4543 | ; | |
66fe93d1 | 4544 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4545 | { |
d3d50620 | 4546 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
940f53e5 | 4547 | start_display (&it, w, start); |
c525d842 CY |
4548 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
4549 | here because we called start_display again and did not | |
4550 | alter it.current_y this time. */ | |
c876b227 SM |
4551 | move_it_to (&it, -1, window_scroll_pixel_based_preserve_x, |
4552 | window_scroll_pixel_based_preserve_y, -1, | |
4553 | MOVE_TO_Y | MOVE_TO_X); | |
940f53e5 RS |
4554 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4555 | } | |
4556 | else | |
4557 | { | |
aed328bf | 4558 | if (partial_p) |
5cdb3cf3 MB |
4559 | /* The last line was only partially visible, so back up two |
4560 | lines to make sure we're on a fully visible line. */ | |
4561 | { | |
e4cc2dfc | 4562 | move_it_by_lines (&it, -2); |
5cdb3cf3 MB |
4563 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4564 | } | |
4565 | else | |
4566 | /* No, the position we saved is OK, so use it. */ | |
4567 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
4568 | } |
4569 | } | |
35928349 | 4570 | bidi_unshelve_cache (itdata, 0); |
5500c422 GM |
4571 | } |
4572 | ||
4573 | ||
4574 | /* Implementation of window_scroll that works based on screen lines. | |
4575 | See the comment of window_scroll for parameter descriptions. */ | |
4576 | ||
4577 | static void | |
971de7fb | 4578 | window_scroll_line_based (Lisp_Object window, int n, int whole, int noerror) |
7ab12479 JB |
4579 | { |
4580 | register struct window *w = XWINDOW (window); | |
03ab8921 EZ |
4581 | /* Fvertical_motion enters redisplay, which can trigger |
4582 | fontification, which in turn can modify buffer text (e.g., if the | |
4583 | fontification functions replace escape sequences with faces, as | |
4584 | in `grep-mode-font-lock-keywords'). So we use a marker to record | |
4585 | the old point position, to prevent crashes in SET_PT_BOTH. */ | |
4586 | Lisp_Object opoint_marker = Fpoint_marker (); | |
d311d28c | 4587 | register ptrdiff_t pos, pos_byte; |
7ab12479 JB |
4588 | register int ht = window_internal_height (w); |
4589 | register Lisp_Object tem; | |
4590 | int lose; | |
5500c422 | 4591 | Lisp_Object bolp; |
d311d28c | 4592 | ptrdiff_t startpos; |
c876b227 | 4593 | Lisp_Object original_pos = Qnil; |
101d1605 | 4594 | |
d4e7cf01 GM |
4595 | /* If scrolling screen-fulls, compute the number of lines to |
4596 | scroll from the window's height. */ | |
4597 | if (whole) | |
4598 | n *= max (1, ht - next_screen_context_lines); | |
4599 | ||
d3d50620 | 4600 | startpos = marker_position (w->start); |
101d1605 | 4601 | |
c876b227 SM |
4602 | if (!NILP (Vscroll_preserve_screen_position)) |
4603 | { | |
4604 | if (window_scroll_preserve_vpos <= 0 | |
1344aad4 TT |
4605 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4606 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c876b227 SM |
4607 | { |
4608 | struct position posit | |
4609 | = *compute_motion (startpos, 0, 0, 0, | |
4610 | PT, ht, 0, | |
80b00b08 | 4611 | -1, w->hscroll, |
c876b227 SM |
4612 | 0, w); |
4613 | window_scroll_preserve_vpos = posit.vpos; | |
80b00b08 | 4614 | window_scroll_preserve_hpos = posit.hpos + w->hscroll; |
c876b227 SM |
4615 | } |
4616 | ||
4617 | original_pos = Fcons (make_number (window_scroll_preserve_hpos), | |
4618 | make_number (window_scroll_preserve_vpos)); | |
4619 | } | |
0a1f771a | 4620 | |
d834a2e9 | 4621 | XSETFASTINT (tem, PT); |
6ffdb539 | 4622 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 4623 | |
265a9e55 | 4624 | if (NILP (tem)) |
7ab12479 | 4625 | { |
cd2be1dd | 4626 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 4627 | startpos = PT; |
7ab12479 JB |
4628 | } |
4629 | ||
345d45b2 | 4630 | SET_PT (startpos); |
5ce7b543 | 4631 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 4632 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 4633 | pos = PT; |
b73ea88e | 4634 | pos_byte = PT_BYTE; |
7ab12479 | 4635 | bolp = Fbolp (); |
03ab8921 EZ |
4636 | SET_PT_BOTH (marker_position (opoint_marker), |
4637 | marker_byte_position (opoint_marker)); | |
7ab12479 JB |
4638 | |
4639 | if (lose) | |
f8026fd8 JB |
4640 | { |
4641 | if (noerror) | |
4642 | return; | |
4643 | else | |
ba96a5cf | 4644 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 4645 | } |
7ab12479 JB |
4646 | |
4647 | if (pos < ZV) | |
7ab12479 | 4648 | { |
0c7da84e | 4649 | /* Don't use a scroll margin that is negative or too large. */ |
71f02bc5 | 4650 | int this_scroll_margin = |
d3d50620 | 4651 | max (0, min (scroll_margin, XINT (w->total_lines) / 4)); |
0c7da84e | 4652 | |
d3d50620 | 4653 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
c98ff5dd DA |
4654 | w->start_at_line_beg = !NILP (bolp); |
4655 | w->update_mode_line = 1; | |
80b00b08 DA |
4656 | w->last_modified = 0; |
4657 | w->last_overlay_modified = 0; | |
345d45b2 RS |
4658 | /* Set force_start so that redisplay_window will run |
4659 | the window-scroll-functions. */ | |
c98ff5dd | 4660 | w->force_start = 1; |
0c7da84e | 4661 | |
bdf4ec93 RS |
4662 | if (!NILP (Vscroll_preserve_screen_position) |
4663 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 4664 | { |
b73ea88e | 4665 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4666 | Fvertical_motion (original_pos, window); |
0c7da84e | 4667 | } |
101d1605 RS |
4668 | /* If we scrolled forward, put point enough lines down |
4669 | that it is outside the scroll margin. */ | |
4670 | else if (n > 0) | |
0c7da84e | 4671 | { |
101d1605 RS |
4672 | int top_margin; |
4673 | ||
4674 | if (this_scroll_margin > 0) | |
4675 | { | |
b73ea88e | 4676 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4677 | Fvertical_motion (make_number (this_scroll_margin), window); |
4678 | top_margin = PT; | |
4679 | } | |
4680 | else | |
4681 | top_margin = pos; | |
4682 | ||
03ab8921 EZ |
4683 | if (top_margin <= marker_position (opoint_marker)) |
4684 | SET_PT_BOTH (marker_position (opoint_marker), | |
4685 | marker_byte_position (opoint_marker)); | |
5500c422 | 4686 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 4687 | { |
b73ea88e | 4688 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4689 | Fvertical_motion (original_pos, window); |
101d1605 | 4690 | } |
9317a85d | 4691 | else |
335406fc | 4692 | SET_PT (top_margin); |
0c7da84e | 4693 | } |
101d1605 | 4694 | else if (n < 0) |
7ab12479 | 4695 | { |
101d1605 RS |
4696 | int bottom_margin; |
4697 | ||
0c7da84e RS |
4698 | /* If we scrolled backward, put point near the end of the window |
4699 | but not within the scroll margin. */ | |
b73ea88e | 4700 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 4701 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
4702 | if (XFASTINT (tem) == ht - this_scroll_margin) |
4703 | bottom_margin = PT; | |
4704 | else | |
4705 | bottom_margin = PT + 1; | |
4706 | ||
03ab8921 EZ |
4707 | if (bottom_margin > marker_position (opoint_marker)) |
4708 | SET_PT_BOTH (marker_position (opoint_marker), | |
4709 | marker_byte_position (opoint_marker)); | |
7ab12479 | 4710 | else |
101d1605 | 4711 | { |
5500c422 | 4712 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 4713 | { |
b73ea88e | 4714 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4715 | Fvertical_motion (original_pos, window); |
9317a85d RS |
4716 | } |
4717 | else | |
4718 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 4719 | } |
7ab12479 JB |
4720 | } |
4721 | } | |
4722 | else | |
f8026fd8 JB |
4723 | { |
4724 | if (noerror) | |
4725 | return; | |
4726 | else | |
ba96a5cf | 4727 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 4728 | } |
7ab12479 | 4729 | } |
5500c422 GM |
4730 | |
4731 | ||
4732 | /* Scroll selected_window up or down. If N is nil, scroll a | |
4733 | screen-full which is defined as the height of the window minus | |
4734 | next_screen_context_lines. If N is the symbol `-', scroll. | |
4735 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
4736 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
4737 | |
4738 | static void | |
971de7fb | 4739 | scroll_command (Lisp_Object n, int direction) |
7ab12479 | 4740 | { |
d311d28c | 4741 | ptrdiff_t count = SPECPDL_INDEX (); |
7ab12479 | 4742 | |
a54e2c05 | 4743 | eassert (eabs (direction) == 1); |
5500c422 GM |
4744 | |
4745 | /* If selected window's buffer isn't current, make it current for | |
4746 | the moment. But don't screw up if window_scroll gets an error. */ | |
d3d50620 | 4747 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
4748 | { |
4749 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
d3d50620 | 4750 | Fset_buffer (XWINDOW (selected_window)->buffer); |
5500c422 GM |
4751 | |
4752 | /* Make redisplay consider other windows than just selected_window. */ | |
4753 | ++windows_or_buffers_changed; | |
95605e15 | 4754 | } |
7ab12479 | 4755 | |
265a9e55 | 4756 | if (NILP (n)) |
d4e7cf01 | 4757 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 4758 | else if (EQ (n, Qminus)) |
d4e7cf01 | 4759 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
4760 | else |
4761 | { | |
4762 | n = Fprefix_numeric_value (n); | |
101d1605 | 4763 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 4764 | } |
95605e15 JB |
4765 | |
4766 | unbind_to (count, Qnil); | |
7ab12479 JB |
4767 | } |
4768 | ||
e0965597 | 4769 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
12bb3111 | 4770 | doc: /* Scroll text of selected window upward ARG lines. |
a0a37a6f | 4771 | If ARG is omitted or nil, scroll upward by a near full screen. |
fdb82f93 PJ |
4772 | A near full screen is `next-screen-context-lines' less than a full screen. |
4773 | Negative ARG means scroll downward. | |
4774 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4775 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4776 | (Lisp_Object arg) |
7ab12479 | 4777 | { |
413430c5 | 4778 | scroll_command (arg, 1); |
7ab12479 JB |
4779 | return Qnil; |
4780 | } | |
4781 | ||
e0965597 | 4782 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
12bb3111 | 4783 | doc: /* Scroll text of selected window down ARG lines. |
a0a37a6f | 4784 | If ARG is omitted or nil, scroll down by a near full screen. |
fdb82f93 PJ |
4785 | A near full screen is `next-screen-context-lines' less than a full screen. |
4786 | Negative ARG means scroll upward. | |
4787 | If ARG is the atom `-', scroll upward by nearly full screen. | |
4788 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4789 | (Lisp_Object arg) |
7ab12479 | 4790 | { |
413430c5 | 4791 | scroll_command (arg, -1); |
7ab12479 JB |
4792 | return Qnil; |
4793 | } | |
ccd0664b RS |
4794 | \f |
4795 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 4796 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 4797 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
4798 | showing that buffer is used. |
4799 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4800 | specifies the window. This takes precedence over | |
4801 | `other-window-scroll-buffer'. */) | |
5842a27b | 4802 | (void) |
7ab12479 | 4803 | { |
ccd0664b | 4804 | Lisp_Object window; |
7ab12479 JB |
4805 | |
4806 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 4807 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
4808 | window = Vminibuf_scroll_window; |
4809 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 4810 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
4811 | { |
4812 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 4813 | if (NILP (window)) |
87478b52 | 4814 | window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
4815 | } |
4816 | else | |
dbc4e1c1 JB |
4817 | { |
4818 | /* Nothing specified; look for a neighboring window on the same | |
4819 | frame. */ | |
4820 | window = Fnext_window (selected_window, Qnil, Qnil); | |
4821 | ||
4822 | if (EQ (window, selected_window)) | |
4823 | /* That didn't get us anywhere; look for a window on another | |
4824 | visible frame. */ | |
4825 | do | |
4826 | window = Fnext_window (window, Qnil, Qt); | |
4827 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
4828 | && ! EQ (window, selected_window)); | |
4829 | } | |
4830 | ||
b7826503 | 4831 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
4832 | |
4833 | if (EQ (window, selected_window)) | |
4834 | error ("There is no other window"); | |
4835 | ||
ccd0664b RS |
4836 | return window; |
4837 | } | |
4838 | ||
4839 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
4840 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
4841 | A near full screen is `next-screen-context-lines' less than a full screen. | |
4842 | The next window is the one below the current one; or the one at the top | |
4843 | if the current one is at the bottom. Negative ARG means scroll downward. | |
4844 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4845 | When calling from a program, supply as argument a number, nil, or `-'. | |
4846 | ||
fdb82f93 | 4847 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
4848 | showing that buffer, popping the buffer up if necessary. |
4849 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4850 | specifies the window to scroll. This takes precedence over | |
4851 | `other-window-scroll-buffer'. */) | |
5842a27b | 4852 | (Lisp_Object arg) |
ccd0664b | 4853 | { |
d4e7cf01 GM |
4854 | Lisp_Object window; |
4855 | struct window *w; | |
d311d28c | 4856 | ptrdiff_t count = SPECPDL_INDEX (); |
ccd0664b RS |
4857 | |
4858 | window = Fother_window_for_scrolling (); | |
7ab12479 | 4859 | w = XWINDOW (window); |
7ab12479 JB |
4860 | |
4861 | /* Don't screw up if window_scroll gets an error. */ | |
4862 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 4863 | ++windows_or_buffers_changed; |
7ab12479 | 4864 | |
d3d50620 DA |
4865 | Fset_buffer (w->buffer); |
4866 | SET_PT (marker_position (w->pointm)); | |
7ab12479 | 4867 | |
413430c5 | 4868 | if (NILP (arg)) |
d4e7cf01 | 4869 | window_scroll (window, 1, 1, 1); |
413430c5 | 4870 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 4871 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
4872 | else |
4873 | { | |
413430c5 | 4874 | if (CONSP (arg)) |
7d7bbefd | 4875 | arg = XCAR (arg); |
b7826503 | 4876 | CHECK_NUMBER (arg); |
101d1605 | 4877 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
4878 | } |
4879 | ||
d3d50620 | 4880 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 4881 | unbind_to (count, Qnil); |
7ab12479 JB |
4882 | |
4883 | return Qnil; | |
4884 | } | |
4885 | \f | |
e0965597 | 4886 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 4887 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
4888 | Default for ARG is window width minus 2. |
4889 | Value is the total amount of leftward horizontal scrolling in | |
4890 | effect after the change. | |
23fe745a | 4891 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 4892 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 4893 | will not scroll a window to a column less than the value returned |
dc297565 | 4894 | by this function. This happens in an interactive call. */) |
5842a27b | 4895 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 4896 | { |
c67fa410 | 4897 | struct window *w = XWINDOW (selected_window); |
aa754e6a PE |
4898 | EMACS_INT requested_arg = (NILP (arg) |
4899 | ? window_body_cols (w) - 2 | |
4900 | : XINT (Fprefix_numeric_value (arg))); | |
24a212eb | 4901 | Lisp_Object result = set_window_hscroll (w, w->hscroll + requested_arg); |
c67fa410 | 4902 | |
dc297565 | 4903 | if (!NILP (set_minimum)) |
c67fa410 GM |
4904 | w->min_hscroll = w->hscroll; |
4905 | ||
4906 | return result; | |
7ab12479 JB |
4907 | } |
4908 | ||
e0965597 | 4909 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 4910 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
4911 | Default for ARG is window width minus 2. |
4912 | Value is the total amount of leftward horizontal scrolling in | |
4913 | effect after the change. | |
23fe745a | 4914 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 4915 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 4916 | will not scroll a window to a column less than the value returned |
dc297565 | 4917 | by this function. This happens in an interactive call. */) |
5842a27b | 4918 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 4919 | { |
c67fa410 | 4920 | struct window *w = XWINDOW (selected_window); |
aa754e6a PE |
4921 | EMACS_INT requested_arg = (NILP (arg) |
4922 | ? window_body_cols (w) - 2 | |
4923 | : XINT (Fprefix_numeric_value (arg))); | |
24a212eb | 4924 | Lisp_Object result = set_window_hscroll (w, w->hscroll - requested_arg); |
177c0ea7 | 4925 | |
dc297565 | 4926 | if (!NILP (set_minimum)) |
c67fa410 GM |
4927 | w->min_hscroll = w->hscroll; |
4928 | ||
4929 | return result; | |
7ab12479 JB |
4930 | } |
4931 | ||
fa832261 KS |
4932 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
4933 | doc: /* Return the window which was selected when entering the minibuffer. | |
12bb3111 | 4934 | Returns nil, if selected window is not a minibuffer window. */) |
5842a27b | 4935 | (void) |
fa832261 KS |
4936 | { |
4937 | if (minibuf_level > 0 | |
4938 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
4939 | && WINDOW_LIVE_P (minibuf_selected_window)) |
4940 | return minibuf_selected_window; | |
4941 | ||
4942 | return Qnil; | |
4943 | } | |
4944 | ||
12c8b416 GM |
4945 | /* Value is the number of lines actually displayed in window W, |
4946 | as opposed to its height. */ | |
4947 | ||
4948 | static int | |
971de7fb | 4949 | displayed_window_lines (struct window *w) |
12c8b416 GM |
4950 | { |
4951 | struct it it; | |
4952 | struct text_pos start; | |
4953 | int height = window_box_height (w); | |
4954 | struct buffer *old_buffer; | |
4955 | int bottom_y; | |
57b3e30b | 4956 | void *itdata = NULL; |
12c8b416 | 4957 | |
d3d50620 | 4958 | if (XBUFFER (w->buffer) != current_buffer) |
12c8b416 GM |
4959 | { |
4960 | old_buffer = current_buffer; | |
d3d50620 | 4961 | set_buffer_internal (XBUFFER (w->buffer)); |
12c8b416 GM |
4962 | } |
4963 | else | |
4964 | old_buffer = NULL; | |
4965 | ||
521b203e GM |
4966 | /* In case W->start is out of the accessible range, do something |
4967 | reasonable. This happens in Info mode when Info-scroll-down | |
4968 | calls (recenter -1) while W->start is 1. */ | |
d3d50620 | 4969 | if (XMARKER (w->start)->charpos < BEGV) |
521b203e | 4970 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); |
d3d50620 | 4971 | else if (XMARKER (w->start)->charpos > ZV) |
521b203e GM |
4972 | SET_TEXT_POS (start, ZV, ZV_BYTE); |
4973 | else | |
d3d50620 | 4974 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
521b203e | 4975 | |
57b3e30b | 4976 | itdata = bidi_shelve_cache (); |
12c8b416 GM |
4977 | start_display (&it, w, start); |
4978 | move_it_vertically (&it, height); | |
c8bc6f65 | 4979 | bottom_y = line_bottom_y (&it); |
35928349 | 4980 | bidi_unshelve_cache (itdata, 0); |
12c8b416 | 4981 | |
1de65f51 RS |
4982 | /* rms: On a non-window display, |
4983 | the value of it.vpos at the bottom of the screen | |
4984 | seems to be 1 larger than window_box_height (w). | |
4985 | This kludge fixes a bug whereby (move-to-window-line -1) | |
4986 | when ZV is on the last screen line | |
4987 | moves to the previous screen line instead of the last one. */ | |
d3d50620 | 4988 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) |
1de65f51 RS |
4989 | height++; |
4990 | ||
12c8b416 GM |
4991 | /* Add in empty lines at the bottom of the window. */ |
4992 | if (bottom_y < height) | |
4993 | { | |
949cf20f | 4994 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 4995 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
4996 | } |
4997 | ||
c8bc6f65 GM |
4998 | if (old_buffer) |
4999 | set_buffer_internal (old_buffer); | |
5000 | ||
12c8b416 GM |
5001 | return it.vpos; |
5002 | } | |
5003 | ||
5004 | ||
a7ca3326 | 5005 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
666e158e | 5006 | doc: /* Center point in selected window and maybe redisplay frame. |
fdb82f93 | 5007 | With prefix argument ARG, recenter putting point on screen line ARG |
12bb3111 | 5008 | relative to the selected window. If ARG is negative, it counts up from the |
fdb82f93 PJ |
5009 | bottom of the window. (ARG should be less than the height of the window.) |
5010 | ||
666e158e MB |
5011 | If ARG is omitted or nil, then recenter with point on the middle line of |
5012 | the selected window; if the variable `recenter-redisplay' is non-nil, | |
5013 | also erase the entire frame and redraw it (when `auto-resize-tool-bars' | |
5014 | is set to `grow-only', this resets the tool-bar's height to the minimum | |
5015 | height needed); if `recenter-redisplay' has the special value `tty', | |
53524d93 | 5016 | then only tty frames are redrawn. |
7d1d98ee | 5017 | |
fdb82f93 PJ |
5018 | Just C-u as prefix means put point in the center of the window |
5019 | and redisplay normally--don't erase and redraw the frame. */) | |
5842a27b | 5020 | (register Lisp_Object arg) |
7ab12479 | 5021 | { |
6df47b59 | 5022 | struct window *w = XWINDOW (selected_window); |
d3d50620 | 5023 | struct buffer *buf = XBUFFER (w->buffer); |
478292ed | 5024 | struct buffer *obuf = current_buffer; |
6df47b59 | 5025 | int center_p = 0; |
d311d28c | 5026 | ptrdiff_t charpos, bytepos; |
71f02bc5 | 5027 | EMACS_INT iarg IF_LINT (= 0); |
f6b43440 | 5028 | int this_scroll_margin; |
7ab12479 | 5029 | |
0fa5d25b RS |
5030 | /* If redisplay is suppressed due to an error, try again. */ |
5031 | obuf->display_error_modiff = 0; | |
5032 | ||
413430c5 | 5033 | if (NILP (arg)) |
7ab12479 | 5034 | { |
666e158e MB |
5035 | if (!NILP (Vrecenter_redisplay) |
5036 | && (!EQ (Vrecenter_redisplay, Qtty) | |
5037 | || !NILP (Ftty_type (selected_frame)))) | |
5038 | { | |
ebfa62c0 | 5039 | ptrdiff_t i; |
f02d6d5c | 5040 | |
666e158e MB |
5041 | /* Invalidate pixel data calculated for all compositions. */ |
5042 | for (i = 0; i < n_compositions; i++) | |
5043 | composition_table[i]->font = NULL; | |
7ab12479 | 5044 | |
666e158e MB |
5045 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5046 | ||
5047 | Fredraw_frame (WINDOW_FRAME (w)); | |
5048 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
5049 | } | |
7d1d98ee | 5050 | |
6df47b59 | 5051 | center_p = 1; |
7ab12479 | 5052 | } |
413430c5 | 5053 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5054 | center_p = 1; |
7ab12479 JB |
5055 | else |
5056 | { | |
413430c5 | 5057 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5058 | CHECK_NUMBER (arg); |
ae12ecd7 | 5059 | iarg = XINT (arg); |
7ab12479 JB |
5060 | } |
5061 | ||
478292ed | 5062 | set_buffer_internal (buf); |
7ab12479 | 5063 | |
f6b43440 RS |
5064 | /* Do this after making BUF current |
5065 | in case scroll_margin is buffer-local. */ | |
71f02bc5 | 5066 | this_scroll_margin = |
d3d50620 | 5067 | max (0, min (scroll_margin, XFASTINT (w->total_lines) / 4)); |
f6b43440 | 5068 | |
521b203e | 5069 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5070 | have variable-height lines and centering point on the basis of |
5071 | line counts would lead to strange effects. */ | |
d3d50620 | 5072 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5073 | { |
6df47b59 GM |
5074 | if (center_p) |
5075 | { | |
521b203e GM |
5076 | struct it it; |
5077 | struct text_pos pt; | |
57b3e30b | 5078 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5079 | |
521b203e GM |
5080 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5081 | start_display (&it, w, pt); | |
f204989e | 5082 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5083 | charpos = IT_CHARPOS (it); |
5084 | bytepos = IT_BYTEPOS (it); | |
35928349 | 5085 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5086 | } |
f6b43440 | 5087 | else if (iarg < 0) |
6df47b59 | 5088 | { |
521b203e GM |
5089 | struct it it; |
5090 | struct text_pos pt; | |
5895d7b9 | 5091 | ptrdiff_t nlines = min (PTRDIFF_MAX, -iarg); |
f204989e KS |
5092 | int extra_line_spacing; |
5093 | int h = window_box_height (w); | |
57b3e30b | 5094 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5095 | |
f6b43440 RS |
5096 | iarg = - max (-iarg, this_scroll_margin); |
5097 | ||
521b203e GM |
5098 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5099 | start_display (&it, w, pt); | |
f204989e KS |
5100 | |
5101 | /* Be sure we have the exact height of the full line containing PT. */ | |
e4cc2dfc | 5102 | move_it_by_lines (&it, 0); |
521b203e | 5103 | |
d466fa4d | 5104 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5105 | height minus what's displayed in the line containing PT, |
5106 | and the lines below. */ | |
f204989e KS |
5107 | it.current_y = 0; |
5108 | it.vpos = 0; | |
e4cc2dfc | 5109 | move_it_by_lines (&it, nlines); |
d466fa4d | 5110 | |
f204989e KS |
5111 | if (it.vpos == nlines) |
5112 | h -= it.current_y; | |
5113 | else | |
5114 | { | |
5115 | /* Last line has no newline */ | |
5116 | h -= line_bottom_y (&it); | |
5117 | it.vpos++; | |
5118 | } | |
5119 | ||
5120 | /* Don't reserve space for extra line spacing of last line. */ | |
5121 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5122 | |
5123 | /* If we can't move down NLINES lines because we hit | |
5124 | the end of the buffer, count in some empty lines. */ | |
5125 | if (it.vpos < nlines) | |
f204989e KS |
5126 | { |
5127 | nlines -= it.vpos; | |
5128 | extra_line_spacing = it.extra_line_spacing; | |
5129 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5130 | } | |
5131 | if (h <= 0) | |
57b3e30b | 5132 | { |
35928349 | 5133 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
5134 | return Qnil; |
5135 | } | |
201c831a | 5136 | |
f204989e | 5137 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5138 | start_display (&it, w, pt); |
f204989e KS |
5139 | it.current_y = 0; |
5140 | move_it_vertically_backward (&it, h); | |
5141 | ||
5142 | /* If extra line spacing is present, we may move too far | |
5143 | back. This causes the last line to be only partially | |
5144 | visible (which triggers redisplay to recenter that line | |
5145 | in the middle), so move forward. | |
5146 | But ignore extra line spacing on last line, as it is not | |
5147 | considered to be part of the visible height of the line. | |
5148 | */ | |
5149 | h += extra_line_spacing; | |
5150 | while (-it.current_y > h) | |
e4cc2dfc | 5151 | move_it_by_lines (&it, 1); |
f204989e | 5152 | |
521b203e GM |
5153 | charpos = IT_CHARPOS (it); |
5154 | bytepos = IT_BYTEPOS (it); | |
57b3e30b | 5155 | |
35928349 | 5156 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5157 | } |
521b203e GM |
5158 | else |
5159 | { | |
5160 | struct position pos; | |
f6b43440 | 5161 | |
f6b43440 RS |
5162 | iarg = max (iarg, this_scroll_margin); |
5163 | ||
5164 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5165 | charpos = pos.bufpos; |
5166 | bytepos = pos.bytepos; | |
5167 | } | |
5168 | } | |
5169 | else | |
5170 | { | |
5171 | struct position pos; | |
5172 | int ht = window_internal_height (w); | |
5173 | ||
5174 | if (center_p) | |
a4429c5b | 5175 | iarg = ht / 2; |
f567c488 KS |
5176 | else if (iarg < 0) |
5177 | iarg += ht; | |
f6b43440 RS |
5178 | |
5179 | /* Don't let it get into the margin at either top or bottom. */ | |
5180 | iarg = max (iarg, this_scroll_margin); | |
5181 | iarg = min (iarg, ht - this_scroll_margin - 1); | |
177c0ea7 | 5182 | |
f6b43440 | 5183 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
5184 | charpos = pos.bufpos; |
5185 | bytepos = pos.bytepos; | |
5186 | } | |
5187 | ||
5188 | /* Set the new window start. */ | |
d3d50620 | 5189 | set_marker_both (w->start, w->buffer, charpos, bytepos); |
077288cf | 5190 | WSET (w, window_end_valid, Qnil); |
177c0ea7 | 5191 | |
c98ff5dd | 5192 | w->optional_new_start = 1; |
95605b1b | 5193 | |
c98ff5dd DA |
5194 | w->start_at_line_beg = (bytepos == BEGV_BYTE || |
5195 | FETCH_BYTE (bytepos - 1) == '\n'); | |
177c0ea7 | 5196 | |
478292ed | 5197 | set_buffer_internal (obuf); |
7ab12479 JB |
5198 | return Qnil; |
5199 | } | |
b7617575 | 5200 | |
81fe0836 | 5201 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5202 | 0, 1, 0, |
5203 | doc: /* Return the height in lines of the text display area of WINDOW. | |
105216ed | 5204 | If WINDOW is omitted or nil, it defaults to the selected window. |
8fef9de1 | 5205 | |
105216ed CY |
5206 | The returned height does not include the mode line, any header line, |
5207 | nor any partial-height lines at the bottom of the text area. */) | |
5842a27b | 5208 | (Lisp_Object window) |
81fe0836 MB |
5209 | { |
5210 | struct window *w = decode_window (window); | |
5211 | int pixel_height = window_box_height (w); | |
d3d50620 | 5212 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5213 | return make_number (line_height); |
5214 | } | |
5215 | ||
5216 | ||
7ab12479 JB |
5217 | \f |
5218 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5219 | 1, 1, "P", |
5220 | doc: /* Position point relative to window. | |
87e68db4 JB |
5221 | ARG nil means position point at center of window. |
5222 | Else, ARG specifies vertical position within the window; | |
fdb82f93 | 5223 | zero means top of window, negative means relative to bottom of window. */) |
5842a27b | 5224 | (Lisp_Object arg) |
7ab12479 | 5225 | { |
b7617575 GM |
5226 | struct window *w = XWINDOW (selected_window); |
5227 | int lines, start; | |
540b6aa0 | 5228 | Lisp_Object window; |
f6b43440 RS |
5229 | #if 0 |
5230 | int this_scroll_margin; | |
5231 | #endif | |
7ab12479 | 5232 | |
d3d50620 DA |
5233 | if (!(BUFFERP (w->buffer) |
5234 | && XBUFFER (w->buffer) == current_buffer)) | |
794b75c7 SM |
5235 | /* This test is needed to make sure PT/PT_BYTE make sense in w->buffer |
5236 | when passed below to set_marker_both. */ | |
5237 | error ("move-to-window-line called from unrelated buffer"); | |
6dc1d2d3 | 5238 | |
b7617575 | 5239 | window = selected_window; |
d3d50620 | 5240 | start = marker_position (w->start); |
7ab12479 JB |
5241 | if (start < BEGV || start > ZV) |
5242 | { | |
b7617575 | 5243 | int height = window_internal_height (w); |
cd2be1dd | 5244 | Fvertical_motion (make_number (- (height / 2)), window); |
d3d50620 | 5245 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
c98ff5dd DA |
5246 | w->start_at_line_beg = !NILP (Fbolp ()); |
5247 | w->force_start = 1; | |
7ab12479 JB |
5248 | } |
5249 | else | |
d3d50620 | 5250 | Fgoto_char (w->start); |
7ab12479 | 5251 | |
b7617575 | 5252 | lines = displayed_window_lines (w); |
f6b43440 RS |
5253 | |
5254 | #if 0 | |
71f02bc5 | 5255 | this_scroll_margin = max (0, min (scroll_margin, lines / 4)); |
f6b43440 RS |
5256 | #endif |
5257 | ||
b7617575 GM |
5258 | if (NILP (arg)) |
5259 | XSETFASTINT (arg, lines / 2); | |
5260 | else | |
5261 | { | |
71f02bc5 | 5262 | EMACS_INT iarg = XINT (Fprefix_numeric_value (arg)); |
f6b43440 RS |
5263 | |
5264 | if (iarg < 0) | |
5265 | iarg = iarg + lines; | |
5266 | ||
5267 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5268 | to a place inside the scroll margins (which would cause the | |
5269 | next redisplay to scroll). I wrote this code, but then concluded | |
5270 | it is probably better not to install it. However, it is here | |
5271 | inside #if 0 so as not to lose it. -- rms. */ | |
5272 | ||
5273 | /* Don't let it get into the margin at either top or bottom. */ | |
5274 | iarg = max (iarg, this_scroll_margin); | |
5275 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5276 | #endif | |
5277 | ||
5278 | arg = make_number (iarg); | |
b7617575 GM |
5279 | } |
5280 | ||
c8bc6f65 | 5281 | /* Skip past a partially visible first line. */ |
163784df | 5282 | if (w->vscroll) |
163784df MB |
5283 | XSETINT (arg, XINT (arg) + 1); |
5284 | ||
540b6aa0 | 5285 | return Fvertical_motion (arg, window); |
7ab12479 | 5286 | } |
5500c422 GM |
5287 | |
5288 | ||
7ab12479 | 5289 | \f |
5500c422 GM |
5290 | /*********************************************************************** |
5291 | Window Configuration | |
5292 | ***********************************************************************/ | |
5293 | ||
7ab12479 JB |
5294 | struct save_window_data |
5295 | { | |
b102ceb1 | 5296 | struct vectorlike_header header; |
bdc727bf | 5297 | Lisp_Object selected_frame; |
7ab12479 JB |
5298 | Lisp_Object current_window; |
5299 | Lisp_Object current_buffer; | |
5300 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5301 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5302 | Lisp_Object root_window; |
bdc727bf | 5303 | Lisp_Object focus_frame; |
cbff28e8 RS |
5304 | /* A vector, each of whose elements is a struct saved_window |
5305 | for one window. */ | |
7ab12479 | 5306 | Lisp_Object saved_windows; |
b05b4e27 SM |
5307 | |
5308 | /* All fields above are traced by the GC. | |
5309 | From `fame-cols' down, the fields are ignored by the GC. */ | |
5310 | ||
5311 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
5312 | int frame_tool_bar_lines; | |
7ab12479 | 5313 | }; |
ff06df24 | 5314 | |
cbff28e8 | 5315 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 5316 | struct saved_window |
ea68264b | 5317 | { |
b102ceb1 | 5318 | struct vectorlike_header header; |
496e208e | 5319 | |
28545e04 | 5320 | Lisp_Object window, buffer, start, pointm, mark; |
949cf20f | 5321 | Lisp_Object left_col, top_line, total_cols, total_lines; |
496e208e | 5322 | Lisp_Object normal_cols, normal_lines; |
949cf20f | 5323 | Lisp_Object hscroll, min_hscroll; |
ea68264b GM |
5324 | Lisp_Object parent, prev; |
5325 | Lisp_Object start_at_line_beg; | |
5326 | Lisp_Object display_table; | |
949cf20f KS |
5327 | Lisp_Object left_margin_cols, right_margin_cols; |
5328 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
562dd5e9 | 5329 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type, dedicated; |
b6f67890 | 5330 | Lisp_Object combination_limit, window_parameters; |
ea68264b GM |
5331 | }; |
5332 | ||
7ab12479 JB |
5333 | #define SAVED_WINDOW_N(swv,n) \ |
5334 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
5335 | ||
5336 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 | 5337 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5842a27b | 5338 | (Lisp_Object object) |
7ab12479 | 5339 | { |
6ad0381c | 5340 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
5341 | } |
5342 | ||
3f8ab7bd | 5343 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 | 5344 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5842a27b | 5345 | (Lisp_Object config) |
3f8ab7bd RS |
5346 | { |
5347 | register struct save_window_data *data; | |
5348 | struct Lisp_Vector *saved_windows; | |
5349 | ||
663fbbba | 5350 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
5351 | |
5352 | data = (struct save_window_data *) XVECTOR (config); | |
5353 | saved_windows = XVECTOR (data->saved_windows); | |
d3d50620 | 5354 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
3f8ab7bd RS |
5355 | } |
5356 | ||
a7ca3326 | 5357 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
5358 | Sset_window_configuration, 1, 1, 0, |
5359 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
5360 | CONFIGURATION must be a value previously returned | |
5361 | by `current-window-configuration' (which see). | |
5362 | If CONFIGURATION was made from a frame that is now deleted, | |
5363 | only frame-independent values can be restored. In this case, | |
5364 | the return value is nil. Otherwise the value is t. */) | |
5842a27b | 5365 | (Lisp_Object configuration) |
7ab12479 | 5366 | { |
7ab12479 JB |
5367 | register struct save_window_data *data; |
5368 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 5369 | Lisp_Object new_current_buffer; |
fd482be5 | 5370 | Lisp_Object frame; |
6198ccd0 | 5371 | Lisp_Object auto_buffer_name; |
44fa5b1e | 5372 | FRAME_PTR f; |
d311d28c | 5373 | ptrdiff_t old_point = -1; |
7ab12479 | 5374 | |
663fbbba | 5375 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 5376 | |
2f83aebe | 5377 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
5378 | saved_windows = XVECTOR (data->saved_windows); |
5379 | ||
7ab12479 | 5380 | new_current_buffer = data->current_buffer; |
4b4deea2 | 5381 | if (NILP (BVAR (XBUFFER (new_current_buffer), name))) |
7ab12479 | 5382 | new_current_buffer = Qnil; |
72695e47 | 5383 | else |
73cadfc1 DK |
5384 | { |
5385 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
5386 | /* The code further down "preserves point" by saving here PT in |
5387 | old_point and then setting it later back into PT. When the | |
5388 | current-selected-window and the final-selected-window both show | |
5389 | the current buffer, this suffers from the problem that the | |
5390 | current PT is the window-point of the current-selected-window, | |
5391 | while the final PT is the point of the final-selected-window, so | |
5392 | this copy from one PT to the other would end up moving the | |
5393 | window-point of the final-selected-window to the window-point of | |
5394 | the current-selected-window. So we have to be careful which | |
5395 | point of the current-buffer we copy into old_point. */ | |
d3d50620 | 5396 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) |
e67a1dea | 5397 | && WINDOWP (selected_window) |
d3d50620 | 5398 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) |
e67a1dea | 5399 | && !EQ (selected_window, data->current_window)) |
d3d50620 | 5400 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; |
e67a1dea SM |
5401 | else |
5402 | old_point = PT; | |
73cadfc1 | 5403 | else |
203eb0aa SM |
5404 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
5405 | point in new_current_buffer as of the last time this buffer was | |
5406 | used. This can be non-deterministic since it can be changed by | |
5407 | things like jit-lock by mere temporary selection of some random | |
5408 | window that happens to show this buffer. | |
5409 | So if possible we want this arbitrary choice of "which point" to | |
5410 | be the one from the to-be-selected-window so as to prevent this | |
5411 | window's cursor from being copied from another window. */ | |
d3d50620 | 5412 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) |
203eb0aa SM |
5413 | /* If current_window = selected_window, its point is in BUF_PT. */ |
5414 | && !EQ (selected_window, data->current_window)) | |
d3d50620 | 5415 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; |
203eb0aa SM |
5416 | else |
5417 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 5418 | } |
7ab12479 | 5419 | |
d3d50620 | 5420 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
fd482be5 | 5421 | f = XFRAME (frame); |
177c0ea7 | 5422 | |
fd482be5 JB |
5423 | /* If f is a dead frame, don't bother rebuilding its window tree. |
5424 | However, there is other stuff we should still try to do below. */ | |
5425 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 5426 | { |
6198ccd0 MR |
5427 | Lisp_Object window; |
5428 | Lisp_Object dead_windows = Qnil; | |
6a6ee00d | 5429 | register Lisp_Object tem, par, pers; |
fd482be5 JB |
5430 | register struct window *w; |
5431 | register struct saved_window *p; | |
5500c422 GM |
5432 | struct window *root_window; |
5433 | struct window **leaf_windows; | |
5434 | int n_leaf_windows; | |
71f02bc5 PE |
5435 | ptrdiff_t k; |
5436 | int i, n; | |
fd482be5 JB |
5437 | |
5438 | /* If the frame has been resized since this window configuration was | |
5439 | made, we change the frame to the size specified in the | |
5440 | configuration, restore the configuration, and then resize it | |
5441 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
5442 | int previous_frame_lines = FRAME_LINES (f); |
5443 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 5444 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 5445 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 5446 | |
d2b35234 RS |
5447 | /* The mouse highlighting code could get screwed up |
5448 | if it runs during this. */ | |
5449 | BLOCK_INPUT; | |
5450 | ||
b05b4e27 SM |
5451 | if (data->frame_lines != previous_frame_lines |
5452 | || data->frame_cols != previous_frame_cols) | |
5453 | change_frame_size (f, data->frame_lines, | |
5454 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 5455 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 5456 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 5457 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
5458 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
5459 | make_number (0)); | |
4314246f | 5460 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 5461 | if (data->frame_tool_bar_lines |
9ea173e8 | 5462 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
5463 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
5464 | make_number (0)); | |
4314246f | 5465 | #endif |
217f2871 | 5466 | #endif |
fd482be5 | 5467 | |
a46c0153 RS |
5468 | /* "Swap out" point from the selected window's buffer |
5469 | into the window itself. (Normally the pointm of the selected | |
5470 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
5471 | restoring the window contents, and prevent it from |
5472 | being done later on when we select a new window. */ | |
d3d50620 | 5473 | if (! NILP (XWINDOW (selected_window)->buffer)) |
596ae0cf RS |
5474 | { |
5475 | w = XWINDOW (selected_window); | |
d3d50620 DA |
5476 | set_marker_both (w->pointm, |
5477 | w->buffer, | |
5478 | BUF_PT (XBUFFER (w->buffer)), | |
5479 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
596ae0cf RS |
5480 | } |
5481 | ||
fd482be5 | 5482 | windows_or_buffers_changed++; |
29aeee73 | 5483 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 5484 | |
5500c422 | 5485 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 5486 | is a serious redisplay flickering problem. What we would |
5500c422 | 5487 | really like to do is to free only those matrices not reused |
9d14503e | 5488 | below. */ |
5500c422 | 5489 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); |
38182d90 PE |
5490 | leaf_windows = alloca (count_windows (root_window) |
5491 | * sizeof *leaf_windows); | |
5500c422 GM |
5492 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); |
5493 | ||
fd482be5 JB |
5494 | /* Kludge Alert! |
5495 | Mark all windows now on frame as "deleted". | |
5496 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 5497 | |
fd482be5 JB |
5498 | Save their current buffers in their height fields, since we may |
5499 | need it later, if a buffer saved in the configuration is now | |
5500 | dead. */ | |
be7f5545 | 5501 | delete_all_child_windows (FRAME_ROOT_WINDOW (f)); |
fd482be5 | 5502 | |
eab3844f | 5503 | for (k = 0; k < saved_windows->header.size; k++) |
fd482be5 JB |
5504 | { |
5505 | p = SAVED_WINDOW_N (saved_windows, k); | |
6198ccd0 MR |
5506 | window = p->window; |
5507 | w = XWINDOW (window); | |
077288cf | 5508 | WSET (w, next, Qnil); |
7ab12479 | 5509 | |
fd482be5 | 5510 | if (!NILP (p->parent)) |
d3d50620 DA |
5511 | WSET (w, parent, SAVED_WINDOW_N |
5512 | (saved_windows, XFASTINT (p->parent))->window); | |
fd482be5 | 5513 | else |
077288cf | 5514 | WSET (w, parent, Qnil); |
7ab12479 | 5515 | |
fd482be5 | 5516 | if (!NILP (p->prev)) |
7ab12479 | 5517 | { |
d3d50620 DA |
5518 | WSET (w, prev, SAVED_WINDOW_N |
5519 | (saved_windows, XFASTINT (p->prev))->window); | |
5520 | WSET (XWINDOW (w->prev), next, p->window); | |
fd482be5 JB |
5521 | } |
5522 | else | |
5523 | { | |
077288cf | 5524 | WSET (w, prev, Qnil); |
d3d50620 | 5525 | if (!NILP (w->parent)) |
fd482be5 | 5526 | { |
d3d50620 | 5527 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 | 5528 | { |
d3d50620 DA |
5529 | WSET (XWINDOW (w->parent), vchild, p->window); |
5530 | WSET (XWINDOW (w->parent), hchild, Qnil); | |
fd482be5 JB |
5531 | } |
5532 | else | |
5533 | { | |
d3d50620 DA |
5534 | WSET (XWINDOW (w->parent), hchild, p->window); |
5535 | WSET (XWINDOW (w->parent), vchild, Qnil); | |
fd482be5 JB |
5536 | } |
5537 | } | |
5538 | } | |
5539 | ||
5540 | /* If we squirreled away the buffer in the window's height, | |
5541 | restore it now. */ | |
d3d50620 DA |
5542 | if (BUFFERP (w->total_lines)) |
5543 | WSET (w, buffer, w->total_lines); | |
077288cf DA |
5544 | WSET (w, left_col, p->left_col); |
5545 | WSET (w, top_line, p->top_line); | |
5546 | WSET (w, total_cols, p->total_cols); | |
5547 | WSET (w, total_lines, p->total_lines); | |
5548 | WSET (w, normal_cols, p->normal_cols); | |
5549 | WSET (w, normal_lines, p->normal_lines); | |
80b00b08 DA |
5550 | w->hscroll = XFASTINT (p->hscroll); |
5551 | w->min_hscroll = XFASTINT (p->min_hscroll); | |
077288cf DA |
5552 | WSET (w, display_table, p->display_table); |
5553 | WSET (w, left_margin_cols, p->left_margin_cols); | |
5554 | WSET (w, right_margin_cols, p->right_margin_cols); | |
5555 | WSET (w, left_fringe_width, p->left_fringe_width); | |
5556 | WSET (w, right_fringe_width, p->right_fringe_width); | |
2af3565e | 5557 | w->fringes_outside_margins = !NILP (p->fringes_outside_margins); |
077288cf DA |
5558 | WSET (w, scroll_bar_width, p->scroll_bar_width); |
5559 | WSET (w, vertical_scroll_bar_type, p->vertical_scroll_bar_type); | |
5560 | WSET (w, dedicated, p->dedicated); | |
5561 | WSET (w, combination_limit, p->combination_limit); | |
6a6ee00d MR |
5562 | /* Restore any window parameters that have been saved. |
5563 | Parameters that have not been saved are left alone. */ | |
5564 | for (tem = p->window_parameters; CONSP (tem); tem = XCDR (tem)) | |
5565 | { | |
5566 | pers = XCAR (tem); | |
5567 | if (CONSP (pers)) | |
5568 | { | |
5569 | if (NILP (XCDR (pers))) | |
5570 | { | |
d3d50620 | 5571 | par = Fassq (XCAR (pers), w->window_parameters); |
6a6ee00d MR |
5572 | if (CONSP (par) && !NILP (XCDR (par))) |
5573 | /* Reset a parameter to nil if and only if it | |
5574 | has a non-nil association. Don't make new | |
5575 | associations. */ | |
5576 | Fsetcdr (par, Qnil); | |
5577 | } | |
5578 | else | |
5579 | /* Always restore a non-nil value. */ | |
5580 | Fset_window_parameter (window, XCAR (pers), XCDR (pers)); | |
5581 | } | |
5582 | } | |
5583 | ||
80b00b08 DA |
5584 | w->last_modified = 0; |
5585 | w->last_overlay_modified = 0; | |
fd482be5 JB |
5586 | |
5587 | /* Reinstall the saved buffer and pointers into it. */ | |
5588 | if (NILP (p->buffer)) | |
6198ccd0 | 5589 | /* An internal window. */ |
077288cf | 5590 | WSET (w, buffer, p->buffer); |
6198ccd0 MR |
5591 | else if (!NILP (BVAR (XBUFFER (p->buffer), name))) |
5592 | /* If saved buffer is alive, install it. */ | |
5593 | { | |
077288cf DA |
5594 | WSET (w, buffer, p->buffer); |
5595 | w->start_at_line_beg = !NILP (p->start_at_line_beg); | |
d3d50620 DA |
5596 | set_marker_restricted (w->start, p->start, w->buffer); |
5597 | set_marker_restricted (w->pointm, p->pointm, | |
5598 | w->buffer); | |
5599 | Fset_marker (BVAR (XBUFFER (w->buffer), mark), | |
5600 | p->mark, w->buffer); | |
077288cf DA |
5601 | |
5602 | /* As documented in Fcurrent_window_configuration, don't | |
5603 | restore the location of point in the buffer which was | |
5604 | current when the window configuration was recorded. */ | |
5605 | if (!EQ (p->buffer, new_current_buffer) | |
5606 | && XBUFFER (p->buffer) == current_buffer) | |
d3d50620 | 5607 | Fgoto_char (w->pointm); |
077288cf | 5608 | } |
d3d50620 DA |
5609 | else if (!NILP (w->buffer) |
5610 | && !NILP (BVAR (XBUFFER (w->buffer), name))) | |
077288cf DA |
5611 | /* Keep window's old buffer; make sure the markers are |
5612 | real. */ | |
5613 | { | |
5614 | /* Set window markers at start of visible range. */ | |
d3d50620 DA |
5615 | if (XMARKER (w->start)->buffer == 0) |
5616 | set_marker_restricted (w->start, make_number (0), | |
5617 | w->buffer); | |
5618 | if (XMARKER (w->pointm)->buffer == 0) | |
077288cf | 5619 | set_marker_restricted_both |
d3d50620 DA |
5620 | (w->pointm, w->buffer, |
5621 | BUF_PT (XBUFFER (w->buffer)), | |
5622 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
077288cf DA |
5623 | w->start_at_line_beg = 1; |
5624 | } | |
5625 | else if (STRINGP (auto_buffer_name = | |
5626 | Fwindow_parameter (window, Qauto_buffer_name)) | |
5627 | && SCHARS (auto_buffer_name) != 0 | |
5628 | && !NILP (WSET (w, buffer, Fget_buffer_create (auto_buffer_name)))) | |
6198ccd0 | 5629 | { |
d3d50620 DA |
5630 | set_marker_restricted (w->start, |
5631 | make_number (0), w->buffer); | |
5632 | set_marker_restricted (w->pointm, | |
5633 | make_number (0), w->buffer); | |
c98ff5dd | 5634 | w->start_at_line_beg = 1; |
6198ccd0 | 5635 | } |
fd482be5 | 5636 | else |
6198ccd0 | 5637 | /* Window has no live buffer, get one. */ |
fd482be5 | 5638 | { |
6198ccd0 MR |
5639 | /* Get the buffer via other_buffer_safely in order to |
5640 | avoid showing an unimportant buffer and, if necessary, to | |
5641 | recreate *scratch* in the course (part of Juanma's bs-show | |
5642 | scenario from March 2011). */ | |
077288cf | 5643 | WSET (w, buffer, other_buffer_safely (Fcurrent_buffer ())); |
6198ccd0 MR |
5644 | /* This will set the markers to beginning of visible |
5645 | range. */ | |
d3d50620 DA |
5646 | set_marker_restricted (w->start, |
5647 | make_number (0), w->buffer); | |
5648 | set_marker_restricted (w->pointm, | |
5649 | make_number (0), w->buffer); | |
c98ff5dd | 5650 | w->start_at_line_beg = 1; |
d3d50620 | 5651 | if (!NILP (w->dedicated)) |
6198ccd0 MR |
5652 | /* Record this window as dead. */ |
5653 | dead_windows = Fcons (window, dead_windows); | |
5654 | /* Make sure window is no more dedicated. */ | |
077288cf | 5655 | WSET (w, dedicated, Qnil); |
7ab12479 JB |
5656 | } |
5657 | } | |
9ace597f | 5658 | |
edd74c35 | 5659 | FSET (f, root_window, data->root_window); |
a46c0153 RS |
5660 | /* Arrange *not* to restore point in the buffer that was |
5661 | current when the window configuration was saved. */ | |
d3d50620 DA |
5662 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
5663 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 5664 | make_number (old_point), |
d3d50620 | 5665 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 5666 | |
6198ccd0 MR |
5667 | /* In the following call to `select-window', prevent "swapping out |
5668 | point" in the old selected window using the buffer that has | |
5669 | been restored into it. We already swapped out that point from | |
5670 | that window's old buffer. */ | |
e6b84b30 | 5671 | select_window (data->current_window, Qnil, 1); |
d3d50620 | 5672 | BVAR (XBUFFER (XWINDOW (selected_window)->buffer), last_selected_window) |
396a830c | 5673 | = selected_window; |
7ab12479 | 5674 | |
db269683 | 5675 | if (NILP (data->focus_frame) |
017b2bad | 5676 | || (FRAMEP (data->focus_frame) |
db269683 JB |
5677 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
5678 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 5679 | |
fd482be5 | 5680 | /* Set the screen height to the value it had before this function. */ |
949cf20f KS |
5681 | if (previous_frame_lines != FRAME_LINES (f) |
5682 | || previous_frame_cols != FRAME_COLS (f)) | |
5683 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 5684 | 0, 0, 0); |
e3678b64 | 5685 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 5686 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
5687 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
5688 | make_number (0)); | |
4314246f | 5689 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5690 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
5691 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
5692 | make_number (0)); | |
4314246f | 5693 | #endif |
217f2871 | 5694 | #endif |
d2b35234 | 5695 | |
5500c422 | 5696 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
5697 | for (i = n = 0; i < n_leaf_windows; ++i) |
5698 | { | |
d3d50620 | 5699 | if (NILP (leaf_windows[i]->buffer)) |
c4280705 GM |
5700 | { |
5701 | /* Assert it's not reused as a combination. */ | |
d3d50620 DA |
5702 | eassert (NILP (leaf_windows[i]->hchild) |
5703 | && NILP (leaf_windows[i]->vchild)); | |
c4280705 | 5704 | free_window_matrices (leaf_windows[i]); |
c4280705 | 5705 | } |
d3d50620 | 5706 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) |
c4280705 GM |
5707 | ++n; |
5708 | } | |
177c0ea7 | 5709 | |
5500c422 | 5710 | adjust_glyphs (f); |
d2b35234 | 5711 | UNBLOCK_INPUT; |
756b6edc | 5712 | |
6198ccd0 MR |
5713 | /* Scan dead buffer windows. */ |
5714 | for (; CONSP (dead_windows); dead_windows = XCDR (dead_windows)) | |
5715 | { | |
5716 | window = XCAR (dead_windows); | |
5717 | if (WINDOW_LIVE_P (window) && !EQ (window, FRAME_ROOT_WINDOW (f))) | |
5718 | delete_deletable_window (window); | |
5719 | } | |
5720 | ||
478292ed RS |
5721 | /* Fselect_window will have made f the selected frame, so we |
5722 | reselect the proper frame here. Fhandle_switch_frame will change the | |
5723 | selected window too, but that doesn't make the call to | |
5724 | Fselect_window above totally superfluous; it still sets f's | |
5725 | selected window. */ | |
5726 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
c6932ecd | 5727 | do_switch_frame (data->selected_frame, 0, 0, Qnil); |
478292ed | 5728 | |
eeca6f6f | 5729 | run_window_configuration_change_hook (f); |
478292ed | 5730 | } |
bdc727bf JB |
5731 | |
5732 | if (!NILP (new_current_buffer)) | |
243a5ce6 | 5733 | Fset_buffer (new_current_buffer); |
bdc727bf | 5734 | |
478292ed | 5735 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 5736 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 5737 | |
3f8ab7bd | 5738 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
5739 | } |
5740 | ||
562dd5e9 | 5741 | |
be7f5545 MR |
5742 | /* Recursively delete all child windows reachable via the next, vchild, |
5743 | and hchild slots of WINDOW. */ | |
fd482be5 | 5744 | void |
be7f5545 | 5745 | delete_all_child_windows (Lisp_Object window) |
7ab12479 | 5746 | { |
fa8a67e6 MR |
5747 | register struct window *w; |
5748 | ||
5749 | w = XWINDOW (window); | |
5750 | ||
d3d50620 | 5751 | if (!NILP (w->next)) |
fa8a67e6 | 5752 | /* Delete WINDOW's siblings (we traverse postorderly). */ |
d3d50620 | 5753 | delete_all_child_windows (w->next); |
605be8af | 5754 | |
d3d50620 | 5755 | WSET (w, total_lines, w->buffer); /* See Fset_window_configuration for excuse. */ |
605be8af | 5756 | |
d3d50620 | 5757 | if (!NILP (w->vchild)) |
fa8a67e6 | 5758 | { |
d3d50620 | 5759 | delete_all_child_windows (w->vchild); |
077288cf | 5760 | WSET (w, vchild, Qnil); |
fa8a67e6 | 5761 | } |
d3d50620 | 5762 | else if (!NILP (w->hchild)) |
fa8a67e6 | 5763 | { |
d3d50620 | 5764 | delete_all_child_windows (w->hchild); |
077288cf | 5765 | WSET (w, hchild, Qnil); |
fa8a67e6 | 5766 | } |
d3d50620 | 5767 | else if (!NILP (w->buffer)) |
fa8a67e6 MR |
5768 | { |
5769 | unshow_buffer (w); | |
d3d50620 DA |
5770 | unchain_marker (XMARKER (w->pointm)); |
5771 | unchain_marker (XMARKER (w->start)); | |
077288cf | 5772 | WSET (w, buffer, Qnil); |
fa8a67e6 | 5773 | } |
acf70840 GM |
5774 | |
5775 | Vwindow_list = Qnil; | |
7ab12479 JB |
5776 | } |
5777 | \f | |
5778 | static int | |
971de7fb | 5779 | count_windows (register struct window *window) |
7ab12479 JB |
5780 | { |
5781 | register int count = 1; | |
d3d50620 DA |
5782 | if (!NILP (window->next)) |
5783 | count += count_windows (XWINDOW (window->next)); | |
5784 | if (!NILP (window->vchild)) | |
5785 | count += count_windows (XWINDOW (window->vchild)); | |
5786 | if (!NILP (window->hchild)) | |
5787 | count += count_windows (XWINDOW (window->hchild)); | |
7ab12479 JB |
5788 | return count; |
5789 | } | |
5790 | ||
5500c422 | 5791 | |
177c0ea7 | 5792 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 | 5793 | Value is last index + 1. */ |
5500c422 | 5794 | static int |
971de7fb | 5795 | get_leaf_windows (struct window *w, struct window **flat, int i) |
5500c422 GM |
5796 | { |
5797 | while (w) | |
5798 | { | |
d3d50620 DA |
5799 | if (!NILP (w->hchild)) |
5800 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
5801 | else if (!NILP (w->vchild)) | |
5802 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 5803 | else |
5500c422 GM |
5804 | flat[i++] = w; |
5805 | ||
d3d50620 | 5806 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
5500c422 GM |
5807 | } |
5808 | ||
5809 | return i; | |
5810 | } | |
5811 | ||
5812 | ||
5813 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
c80e3b4a | 5814 | null if W's current matrix is invalid, so that no meaningful glyph |
5500c422 | 5815 | can be returned. */ |
5500c422 | 5816 | struct glyph * |
971de7fb | 5817 | get_phys_cursor_glyph (struct window *w) |
5500c422 GM |
5818 | { |
5819 | struct glyph_row *row; | |
5820 | struct glyph *glyph; | |
f8fe6f96 | 5821 | int hpos = w->phys_cursor.hpos; |
5500c422 | 5822 | |
f8fe6f96 EZ |
5823 | if (!(w->phys_cursor.vpos >= 0 |
5824 | && w->phys_cursor.vpos < w->current_matrix->nrows)) | |
5825 | return NULL; | |
5826 | ||
5827 | row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos); | |
5828 | if (!row->enabled_p) | |
5829 | return NULL; | |
5830 | ||
80b00b08 | 5831 | if (w->hscroll) |
f8fe6f96 EZ |
5832 | { |
5833 | /* When the window is hscrolled, cursor hpos can legitimately be | |
5834 | out of bounds, but we draw the cursor at the corresponding | |
5835 | window margin in that case. */ | |
5836 | if (!row->reversed_p && hpos < 0) | |
5837 | hpos = 0; | |
5838 | if (row->reversed_p && hpos >= row->used[TEXT_AREA]) | |
5839 | hpos = row->used[TEXT_AREA] - 1; | |
5840 | } | |
5500c422 | 5841 | |
f8fe6f96 EZ |
5842 | if (row->used[TEXT_AREA] > hpos |
5843 | && 0 <= hpos) | |
5844 | glyph = row->glyphs[TEXT_AREA] + hpos; | |
5500c422 GM |
5845 | else |
5846 | glyph = NULL; | |
5847 | ||
5848 | return glyph; | |
5849 | } | |
5850 | ||
5851 | ||
7ab12479 | 5852 | static int |
971de7fb | 5853 | save_window_save (Lisp_Object window, struct Lisp_Vector *vector, int i) |
7ab12479 JB |
5854 | { |
5855 | register struct saved_window *p; | |
5856 | register struct window *w; | |
6a6ee00d | 5857 | register Lisp_Object tem, pers, par; |
7ab12479 | 5858 | |
d3d50620 | 5859 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
5860 | { |
5861 | p = SAVED_WINDOW_N (vector, i); | |
5862 | w = XWINDOW (window); | |
5863 | ||
077288cf | 5864 | WSET (w, temslot, make_number (i)); i++; |
7ab12479 | 5865 | p->window = window; |
d3d50620 DA |
5866 | p->buffer = w->buffer; |
5867 | p->left_col = w->left_col; | |
5868 | p->top_line = w->top_line; | |
5869 | p->total_cols = w->total_cols; | |
5870 | p->total_lines = w->total_lines; | |
5871 | p->normal_cols = w->normal_cols; | |
5872 | p->normal_lines = w->normal_lines; | |
80b00b08 DA |
5873 | XSETFASTINT (p->hscroll, w->hscroll); |
5874 | XSETFASTINT (p->min_hscroll, w->min_hscroll); | |
d3d50620 DA |
5875 | p->display_table = w->display_table; |
5876 | p->left_margin_cols = w->left_margin_cols; | |
5877 | p->right_margin_cols = w->right_margin_cols; | |
5878 | p->left_fringe_width = w->left_fringe_width; | |
5879 | p->right_fringe_width = w->right_fringe_width; | |
2af3565e | 5880 | p->fringes_outside_margins = w->fringes_outside_margins ? Qt : Qnil; |
d3d50620 DA |
5881 | p->scroll_bar_width = w->scroll_bar_width; |
5882 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
5883 | p->dedicated = w->dedicated; | |
5884 | p->combination_limit = w->combination_limit; | |
6a6ee00d MR |
5885 | p->window_parameters = Qnil; |
5886 | ||
5887 | if (!NILP (Vwindow_persistent_parameters)) | |
5888 | { | |
5889 | /* Run cycle detection on Vwindow_persistent_parameters. */ | |
5890 | Lisp_Object tortoise, hare; | |
5891 | ||
5892 | hare = tortoise = Vwindow_persistent_parameters; | |
5893 | while (CONSP (hare)) | |
5894 | { | |
5895 | hare = XCDR (hare); | |
5896 | if (!CONSP (hare)) | |
5897 | break; | |
5898 | ||
5899 | hare = XCDR (hare); | |
5900 | tortoise = XCDR (tortoise); | |
5901 | ||
5902 | if (EQ (hare, tortoise)) | |
5903 | /* Reset Vwindow_persistent_parameters to Qnil. */ | |
5904 | { | |
5905 | Vwindow_persistent_parameters = Qnil; | |
5906 | break; | |
5907 | } | |
5908 | } | |
5909 | ||
5910 | for (tem = Vwindow_persistent_parameters; CONSP (tem); | |
5911 | tem = XCDR (tem)) | |
5912 | { | |
5913 | pers = XCAR (tem); | |
34a02f46 MR |
5914 | /* Save values for persistent window parameters. */ |
5915 | if (CONSP (pers) && !NILP (XCDR (pers))) | |
6a6ee00d | 5916 | { |
d3d50620 | 5917 | par = Fassq (XCAR (pers), w->window_parameters); |
6a6ee00d MR |
5918 | if (NILP (par)) |
5919 | /* If the window has no value for the parameter, | |
5920 | make one. */ | |
5921 | p->window_parameters = Fcons (Fcons (XCAR (pers), Qnil), | |
5922 | p->window_parameters); | |
5923 | else | |
5924 | /* If the window has a value for the parameter, | |
5925 | save it. */ | |
5926 | p->window_parameters = Fcons (Fcons (XCAR (par), | |
5927 | XCDR (par)), | |
5928 | p->window_parameters); | |
5929 | } | |
5930 | } | |
5931 | } | |
5932 | ||
d3d50620 | 5933 | if (!NILP (w->buffer)) |
7ab12479 | 5934 | { |
6a6ee00d MR |
5935 | /* Save w's value of point in the window configuration. If w |
5936 | is the selected window, then get the value of point from | |
5937 | the buffer; pointm is garbage in the selected window. */ | |
7ab12479 | 5938 | if (EQ (window, selected_window)) |
d3d50620 DA |
5939 | p->pointm = build_marker (XBUFFER (w->buffer), |
5940 | BUF_PT (XBUFFER (w->buffer)), | |
5941 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 | 5942 | else |
d3d50620 | 5943 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
de8c03dc SM |
5944 | XMARKER (p->pointm)->insertion_type |
5945 | = !NILP (Vwindow_point_insertion_type); | |
7ab12479 | 5946 | |
d3d50620 | 5947 | p->start = Fcopy_marker (w->start, Qnil); |
c98ff5dd | 5948 | p->start_at_line_beg = w->start_at_line_beg ? Qt : Qnil; |
7ab12479 | 5949 | |
d3d50620 | 5950 | tem = BVAR (XBUFFER (w->buffer), mark); |
eeb82665 | 5951 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
5952 | } |
5953 | else | |
5954 | { | |
5955 | p->pointm = Qnil; | |
5956 | p->start = Qnil; | |
5957 | p->mark = Qnil; | |
5958 | p->start_at_line_beg = Qnil; | |
5959 | } | |
5960 | ||
d3d50620 | 5961 | if (NILP (w->parent)) |
7ab12479 JB |
5962 | p->parent = Qnil; |
5963 | else | |
d3d50620 | 5964 | p->parent = XWINDOW (w->parent)->temslot; |
7ab12479 | 5965 | |
d3d50620 | 5966 | if (NILP (w->prev)) |
7ab12479 JB |
5967 | p->prev = Qnil; |
5968 | else | |
d3d50620 | 5969 | p->prev = XWINDOW (w->prev)->temslot; |
7ab12479 | 5970 | |
d3d50620 DA |
5971 | if (!NILP (w->vchild)) |
5972 | i = save_window_save (w->vchild, vector, i); | |
5973 | if (!NILP (w->hchild)) | |
5974 | i = save_window_save (w->hchild, vector, i); | |
7ab12479 JB |
5975 | } |
5976 | ||
5977 | return i; | |
5978 | } | |
5979 | ||
a7ca3326 | 5980 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
5981 | Scurrent_window_configuration, 0, 1, 0, |
5982 | doc: /* Return an object representing the current window configuration of FRAME. | |
5983 | If FRAME is nil or omitted, use the selected frame. | |
5984 | This describes the number of windows, their sizes and current buffers, | |
5985 | and for each displayed buffer, where display starts, and the positions of | |
5986 | point and mark. An exception is made for point in the current buffer: | |
5987 | its value is -not- saved. | |
5988 | This also records the currently selected frame, and FRAME's focus | |
34a02f46 MR |
5989 | redirection (see `redirect-frame-focus'). The variable |
5990 | `window-persistent-parameters' specifies which window parameters are | |
5991 | saved by this function. */) | |
5842a27b | 5992 | (Lisp_Object frame) |
7ab12479 JB |
5993 | { |
5994 | register Lisp_Object tem; | |
5995 | register int n_windows; | |
5996 | register struct save_window_data *data; | |
5997 | register int i; | |
44fa5b1e | 5998 | FRAME_PTR f; |
43bad991 | 5999 | |
44fa5b1e | 6000 | if (NILP (frame)) |
1ae1a37d | 6001 | frame = selected_frame; |
b7826503 | 6002 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 6003 | f = XFRAME (frame); |
7ab12479 | 6004 | |
44fa5b1e | 6005 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
6006 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
6007 | PVEC_WINDOW_CONFIGURATION); | |
6008 | ||
6009 | data->frame_cols = FRAME_COLS (f); | |
6010 | data->frame_lines = FRAME_LINES (f); | |
6011 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
6012 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 6013 | data->selected_frame = selected_frame; |
44fa5b1e | 6014 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6015 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6016 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6017 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6018 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6019 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
7ab12479 JB |
6020 | tem = Fmake_vector (make_number (n_windows), Qnil); |
6021 | data->saved_windows = tem; | |
6022 | for (i = 0; i < n_windows; i++) | |
28be1ada DA |
6023 | ASET (tem, i, |
6024 | Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil)); | |
a1d58e5b | 6025 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6026 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6027 | return (tem); |
6028 | } | |
5500c422 GM |
6029 | \f |
6030 | /*********************************************************************** | |
6031 | Marginal Areas | |
6032 | ***********************************************************************/ | |
6033 | ||
6034 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6035 | 2, 3, 0, |
fdb82f93 | 6036 | doc: /* Set width of marginal areas of window WINDOW. |
6b61353c KH |
6037 | If WINDOW is nil, set margins of the currently selected window. |
6038 | Second arg LEFT-WIDTH specifies the number of character cells to | |
6039 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6040 | does the same for the right marginal area. A nil width parameter | |
6041 | means no margin. */) | |
5842a27b | 6042 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width) |
5500c422 GM |
6043 | { |
6044 | struct window *w = decode_window (window); | |
5500c422 | 6045 | |
6b61353c KH |
6046 | /* Translate negative or zero widths to nil. |
6047 | Margins that are too wide have to be checked elsewhere. */ | |
949cf20f | 6048 | |
c10ce82e | 6049 | if (!NILP (left_width)) |
6b61353c | 6050 | { |
c10ce82e JB |
6051 | CHECK_NUMBER (left_width); |
6052 | if (XINT (left_width) <= 0) | |
6053 | left_width = Qnil; | |
6b61353c | 6054 | } |
5500c422 | 6055 | |
c10ce82e | 6056 | if (!NILP (right_width)) |
6b61353c | 6057 | { |
c10ce82e JB |
6058 | CHECK_NUMBER (right_width); |
6059 | if (XINT (right_width) <= 0) | |
6060 | right_width = Qnil; | |
6b61353c | 6061 | } |
5500c422 | 6062 | |
d3d50620 DA |
6063 | if (!EQ (w->left_margin_cols, left_width) |
6064 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6065 | { |
077288cf DA |
6066 | WSET (w, left_margin_cols, left_width); |
6067 | WSET (w, right_margin_cols, right_width); | |
949cf20f KS |
6068 | |
6069 | adjust_window_margins (w); | |
6070 | ||
6071 | ++windows_or_buffers_changed; | |
6072 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6073 | } | |
5500c422 | 6074 | |
5500c422 GM |
6075 | return Qnil; |
6076 | } | |
6077 | ||
6078 | ||
6079 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6080 | 0, 1, 0, | |
fdb82f93 | 6081 | doc: /* Get width of marginal areas of window WINDOW. |
49745b39 | 6082 | If WINDOW is omitted or nil, it defaults to the selected window. |
fdb82f93 PJ |
6083 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). |
6084 | If a marginal area does not exist, its width will be returned | |
6085 | as nil. */) | |
5842a27b | 6086 | (Lisp_Object window) |
5500c422 GM |
6087 | { |
6088 | struct window *w = decode_window (window); | |
d3d50620 | 6089 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
949cf20f KS |
6090 | } |
6091 | ||
6092 | ||
6093 | \f | |
6094 | /*********************************************************************** | |
6095 | Fringes | |
6096 | ***********************************************************************/ | |
6097 | ||
a7ca3326 | 6098 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, |
949cf20f | 6099 | 2, 4, 0, |
6b61353c KH |
6100 | doc: /* Set the fringe widths of window WINDOW. |
6101 | If WINDOW is nil, set the fringe widths of the currently selected | |
6102 | window. | |
6103 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for | |
6104 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6105 | fringe width. If a fringe width arg is nil, that means to use the | |
6106 | frame's default fringe width. Default fringe widths can be set with | |
6107 | the command `set-fringe-style'. | |
6108 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6109 | outside of the display margins. By default, fringes are drawn between | |
6110 | display marginal areas and the text area. */) | |
5842a27b | 6111 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width, Lisp_Object outside_margins) |
949cf20f KS |
6112 | { |
6113 | struct window *w = decode_window (window); | |
2af3565e | 6114 | int outside = !NILP (outside_margins); |
949cf20f | 6115 | |
c10ce82e JB |
6116 | if (!NILP (left_width)) |
6117 | CHECK_NATNUM (left_width); | |
6118 | if (!NILP (right_width)) | |
6119 | CHECK_NATNUM (right_width); | |
5a857365 | 6120 | |
017e297e | 6121 | /* Do nothing on a tty. */ |
d46c6df5 | 6122 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
d3d50620 DA |
6123 | && (!EQ (w->left_fringe_width, left_width) |
6124 | || !EQ (w->right_fringe_width, right_width) | |
2af3565e | 6125 | || w->fringes_outside_margins != outside)) |
949cf20f | 6126 | { |
077288cf DA |
6127 | WSET (w, left_fringe_width, left_width); |
6128 | WSET (w, right_fringe_width, right_width); | |
2af3565e | 6129 | w->fringes_outside_margins = outside; |
949cf20f KS |
6130 | |
6131 | adjust_window_margins (w); | |
6132 | ||
6133 | clear_glyph_matrix (w->current_matrix); | |
077288cf | 6134 | WSET (w, window_end_valid, Qnil); |
949cf20f KS |
6135 | |
6136 | ++windows_or_buffers_changed; | |
6137 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6138 | } | |
6139 | ||
6140 | return Qnil; | |
6141 | } | |
6142 | ||
6143 | ||
6144 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6145 | 0, 1, 0, | |
6146 | doc: /* Get width of fringes of window WINDOW. | |
49745b39 | 6147 | If WINDOW is omitted or nil, it defaults to the selected window. |
6b61353c | 6148 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
5842a27b | 6149 | (Lisp_Object window) |
949cf20f KS |
6150 | { |
6151 | struct window *w = decode_window (window); | |
d46c6df5 | 6152 | |
949cf20f KS |
6153 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6154 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
d46c6df5 NR |
6155 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
6156 | ? Qt : Qnil), Qnil))); | |
949cf20f KS |
6157 | } |
6158 | ||
6159 | ||
6160 | \f | |
6161 | /*********************************************************************** | |
6162 | Scroll bars | |
6163 | ***********************************************************************/ | |
6164 | ||
a7ca3326 | 6165 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, |
16a97296 | 6166 | Sset_window_scroll_bars, 2, 4, 0, |
949cf20f KS |
6167 | doc: /* Set width and type of scroll bars of window WINDOW. |
6168 | If window is nil, set scroll bars of the currently selected window. | |
6169 | Second parameter WIDTH specifies the pixel width for the scroll bar; | |
6170 | this is automatically adjusted to a multiple of the frame column width. | |
6171 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6172 | bar: left, right, or nil. | |
6b61353c | 6173 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6174 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6175 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
5842a27b | 6176 | (Lisp_Object window, Lisp_Object width, Lisp_Object vertical_type, Lisp_Object horizontal_type) |
949cf20f KS |
6177 | { |
6178 | struct window *w = decode_window (window); | |
6179 | ||
6180 | if (!NILP (width)) | |
0f8fe9a2 | 6181 | { |
af5a5a98 | 6182 | CHECK_RANGED_INTEGER (width, 0, INT_MAX); |
949cf20f | 6183 | |
0f8fe9a2 SM |
6184 | if (XINT (width) == 0) |
6185 | vertical_type = Qnil; | |
6186 | } | |
949cf20f | 6187 | |
413a79ad | 6188 | if (!(NILP (vertical_type) |
0cc1039f | 6189 | || EQ (vertical_type, Qleft) |
6b61353c KH |
6190 | || EQ (vertical_type, Qright) |
6191 | || EQ (vertical_type, Qt))) | |
6192 | error ("Invalid type of vertical scroll bar"); | |
6193 | ||
d3d50620 DA |
6194 | if (!EQ (w->scroll_bar_width, width) |
6195 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
949cf20f | 6196 | { |
077288cf DA |
6197 | WSET (w, scroll_bar_width, width); |
6198 | WSET (w, vertical_scroll_bar_type, vertical_type); | |
949cf20f KS |
6199 | |
6200 | adjust_window_margins (w); | |
6201 | ||
6202 | clear_glyph_matrix (w->current_matrix); | |
077288cf | 6203 | WSET (w, window_end_valid, Qnil); |
949cf20f KS |
6204 | |
6205 | ++windows_or_buffers_changed; | |
6206 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6207 | } | |
6208 | ||
6209 | return Qnil; | |
6210 | } | |
6211 | ||
6212 | ||
6213 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6214 | 0, 1, 0, | |
6215 | doc: /* Get width and type of scroll bars of window WINDOW. | |
49745b39 | 6216 | If WINDOW is omitted or nil, it defaults to the selected window. |
6b61353c KH |
6217 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6218 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6219 | value. */) | |
5842a27b | 6220 | (Lisp_Object window) |
949cf20f KS |
6221 | { |
6222 | struct window *w = decode_window (window); | |
6223 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6224 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6225 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
6226 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
d3d50620 | 6227 | Fcons (w->vertical_scroll_bar_type, |
949cf20f | 6228 | Fcons (Qnil, Qnil)))); |
5500c422 GM |
6229 | } |
6230 | ||
6231 | ||
7ab12479 | 6232 | \f |
5500c422 GM |
6233 | /*********************************************************************** |
6234 | Smooth scrolling | |
6235 | ***********************************************************************/ | |
6236 | ||
0cc1039f | 6237 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 | 6238 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
49745b39 | 6239 | If WINDOW is omitted or nil, it defaults to the selected window. |
0cc1039f | 6240 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6241 | optional second arg PIXELS-P means value is measured in pixels. */) |
5842a27b | 6242 | (Lisp_Object window, Lisp_Object pixels_p) |
5500c422 | 6243 | { |
47004952 | 6244 | Lisp_Object result; |
5500c422 GM |
6245 | struct frame *f; |
6246 | struct window *w; | |
177c0ea7 | 6247 | |
5500c422 GM |
6248 | if (NILP (window)) |
6249 | window = selected_window; | |
47004952 | 6250 | else |
b7826503 | 6251 | CHECK_WINDOW (window); |
5500c422 | 6252 | w = XWINDOW (window); |
d3d50620 | 6253 | f = XFRAME (w->frame); |
177c0ea7 | 6254 | |
5500c422 | 6255 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6256 | result = (NILP (pixels_p) |
6257 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6258 | : make_number (-w->vscroll)); | |
5500c422 | 6259 | else |
47004952 GM |
6260 | result = make_number (0); |
6261 | return result; | |
5500c422 GM |
6262 | } |
6263 | ||
6264 | ||
6265 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6266 | 2, 3, 0, |
fdb82f93 | 6267 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6268 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6269 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6270 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6271 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6272 | corresponds to an integral number of pixels. The return value is the | |
6273 | result of this rounding. | |
6274 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
5842a27b | 6275 | (Lisp_Object window, Lisp_Object vscroll, Lisp_Object pixels_p) |
5500c422 GM |
6276 | { |
6277 | struct window *w; | |
6278 | struct frame *f; | |
177c0ea7 | 6279 | |
5500c422 GM |
6280 | if (NILP (window)) |
6281 | window = selected_window; | |
47004952 | 6282 | else |
b7826503 PJ |
6283 | CHECK_WINDOW (window); |
6284 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 6285 | |
5500c422 | 6286 | w = XWINDOW (window); |
d3d50620 | 6287 | f = XFRAME (w->frame); |
5500c422 GM |
6288 | |
6289 | if (FRAME_WINDOW_P (f)) | |
6290 | { | |
6291 | int old_dy = w->vscroll; | |
177c0ea7 | 6292 | |
0cc1039f KS |
6293 | w->vscroll = - (NILP (pixels_p) |
6294 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6295 | : XFLOATINT (vscroll)); | |
47004952 | 6296 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6297 | |
e56263e5 KS |
6298 | if (w->vscroll != old_dy) |
6299 | { | |
6300 | /* Adjust glyph matrix of the frame if the virtual display | |
6301 | area becomes larger than before. */ | |
6302 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
6303 | adjust_glyphs (f); | |
177c0ea7 | 6304 | |
e56263e5 | 6305 | /* Prevent redisplay shortcuts. */ |
d3d50620 | 6306 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
e56263e5 | 6307 | } |
5500c422 | 6308 | } |
177c0ea7 | 6309 | |
0cc1039f | 6310 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 6311 | } |
177c0ea7 | 6312 | |
7bbb5782 GM |
6313 | \f |
6314 | /* Call FN for all leaf windows on frame F. FN is called with the | |
6315 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 6316 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 | 6317 | |
2f7c71a1 AS |
6318 | static void |
6319 | foreach_window (struct frame *f, int (*fn) (struct window *, void *), | |
6320 | void *user_data) | |
7bbb5782 | 6321 | { |
56f2de10 | 6322 | /* delete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
76fb556f YM |
6323 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) |
6324 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
6325 | } |
6326 | ||
6327 | ||
6328 | /* Helper function for foreach_window. Call FN for all leaf windows | |
6329 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 6330 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 6331 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 6332 | |
67492200 | 6333 | static int |
971de7fb | 6334 | foreach_window_1 (struct window *w, int (*fn) (struct window *, void *), void *user_data) |
7bbb5782 | 6335 | { |
67492200 | 6336 | int cont; |
177c0ea7 | 6337 | |
67492200 | 6338 | for (cont = 1; w && cont;) |
7bbb5782 | 6339 | { |
d3d50620 DA |
6340 | if (!NILP (w->hchild)) |
6341 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); | |
6342 | else if (!NILP (w->vchild)) | |
6343 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); | |
177c0ea7 | 6344 | else |
0f532a9a | 6345 | cont = fn (w, user_data); |
177c0ea7 | 6346 | |
d3d50620 | 6347 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
7bbb5782 | 6348 | } |
67492200 GM |
6349 | |
6350 | return cont; | |
7bbb5782 GM |
6351 | } |
6352 | ||
6353 | ||
6d194a45 | 6354 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 6355 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
6356 | the window start. */ |
6357 | ||
67492200 | 6358 | static int |
971de7fb | 6359 | freeze_window_start (struct window *w, void *freeze_p) |
7bbb5782 | 6360 | { |
08c1d235 SM |
6361 | if (MINI_WINDOW_P (w) |
6362 | || (WINDOWP (selected_window) /* Can be nil in corner cases. */ | |
6363 | && (w == XWINDOW (selected_window) | |
6364 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
6365 | && ! NILP (Vminibuf_scroll_window) | |
6366 | && w == XWINDOW (Vminibuf_scroll_window))))) | |
f95464e4 | 6367 | freeze_p = NULL; |
177c0ea7 | 6368 | |
f95464e4 | 6369 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 6370 | return 1; |
7bbb5782 GM |
6371 | } |
6372 | ||
6373 | ||
6374 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
6375 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
6376 | means freeze the window start. */ | |
6377 | ||
6378 | void | |
971de7fb | 6379 | freeze_window_starts (struct frame *f, int freeze_p) |
7bbb5782 | 6380 | { |
cbccabec | 6381 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 6382 | } |
5500c422 GM |
6383 | |
6384 | \f | |
6385 | /*********************************************************************** | |
6386 | Initialization | |
6387 | ***********************************************************************/ | |
6388 | ||
6198ccd0 MR |
6389 | /* Return 1 if window configurations CONFIGURATION1 and CONFIGURATION2 |
6390 | describe the same state of affairs. This is used by Fequal. | |
6391 | ||
6392 | ignore_positions non-zero means ignore non-matching scroll positions | |
6393 | and the like. | |
6394 | ||
e4769531 | 6395 | This ignores a couple of things like the dedication status of |
b6f67890 MR |
6396 | window, combination_limit and the like. This might have to be |
6397 | fixed. */ | |
cbff28e8 RS |
6398 | |
6399 | int | |
6198ccd0 | 6400 | compare_window_configurations (Lisp_Object configuration1, Lisp_Object configuration2, int ignore_positions) |
cbff28e8 RS |
6401 | { |
6402 | register struct save_window_data *d1, *d2; | |
6198ccd0 | 6403 | struct Lisp_Vector *sws1, *sws2; |
71f02bc5 | 6404 | ptrdiff_t i; |
cbff28e8 | 6405 | |
6198ccd0 MR |
6406 | CHECK_WINDOW_CONFIGURATION (configuration1); |
6407 | CHECK_WINDOW_CONFIGURATION (configuration2); | |
6408 | ||
6409 | d1 = (struct save_window_data *) XVECTOR (configuration1); | |
6410 | d2 = (struct save_window_data *) XVECTOR (configuration2); | |
6411 | sws1 = XVECTOR (d1->saved_windows); | |
6412 | sws2 = XVECTOR (d2->saved_windows); | |
6413 | ||
6414 | /* Frame settings must match. */ | |
6415 | if (d1->frame_cols != d2->frame_cols | |
6416 | || d1->frame_lines != d2->frame_lines | |
6417 | || d1->frame_menu_bar_lines != d2->frame_menu_bar_lines | |
6418 | || !EQ (d1->selected_frame, d2->selected_frame) | |
6419 | || !EQ (d1->current_buffer, d2->current_buffer) | |
6420 | || (!ignore_positions | |
6421 | && (!EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window) | |
6422 | || !EQ (d1->minibuf_selected_window, d2->minibuf_selected_window))) | |
6423 | || !EQ (d1->focus_frame, d2->focus_frame) | |
6424 | /* Verify that the two configurations have the same number of windows. */ | |
6425 | || sws1->header.size != sws2->header.size) | |
cbff28e8 | 6426 | return 0; |
cbff28e8 | 6427 | |
6198ccd0 | 6428 | for (i = 0; i < sws1->header.size; i++) |
cbff28e8 | 6429 | { |
6198ccd0 | 6430 | struct saved_window *sw1, *sw2; |
cbff28e8 | 6431 | |
6198ccd0 MR |
6432 | sw1 = SAVED_WINDOW_N (sws1, i); |
6433 | sw2 = SAVED_WINDOW_N (sws2, i); | |
6434 | ||
6435 | if ( | |
6436 | /* The "current" windows in the two configurations must | |
6437 | correspond to each other. */ | |
6438 | EQ (d1->current_window, sw1->window) | |
6439 | != EQ (d2->current_window, sw2->window) | |
6440 | /* Windows' buffers must match. */ | |
6441 | || !EQ (sw1->buffer, sw2->buffer) | |
6442 | || !EQ (sw1->left_col, sw2->left_col) | |
6443 | || !EQ (sw1->top_line, sw2->top_line) | |
6444 | || !EQ (sw1->total_cols, sw2->total_cols) | |
6445 | || !EQ (sw1->total_lines, sw2->total_lines) | |
6446 | || !EQ (sw1->display_table, sw2->display_table) | |
6447 | /* The next two disjuncts check the window structure for | |
6448 | equality. */ | |
6449 | || !EQ (sw1->parent, sw2->parent) | |
6450 | || !EQ (sw1->prev, sw2->prev) | |
6451 | || (!ignore_positions | |
6452 | && (!EQ (sw1->hscroll, sw2->hscroll) | |
6453 | || !EQ (sw1->min_hscroll, sw2->min_hscroll) | |
6454 | || !EQ (sw1->start_at_line_beg, sw2->start_at_line_beg) | |
6455 | || NILP (Fequal (sw1->start, sw2->start)) | |
6456 | || NILP (Fequal (sw1->pointm, sw2->pointm)) | |
6457 | || NILP (Fequal (sw1->mark, sw2->mark)))) | |
6458 | || !EQ (sw1->left_margin_cols, sw2->left_margin_cols) | |
6459 | || !EQ (sw1->right_margin_cols, sw2->right_margin_cols) | |
6460 | || !EQ (sw1->left_fringe_width, sw2->left_fringe_width) | |
6461 | || !EQ (sw1->right_fringe_width, sw2->right_fringe_width) | |
6462 | || !EQ (sw1->fringes_outside_margins, sw2->fringes_outside_margins) | |
6463 | || !EQ (sw1->scroll_bar_width, sw2->scroll_bar_width) | |
6464 | || !EQ (sw1->vertical_scroll_bar_type, sw2->vertical_scroll_bar_type)) | |
949cf20f | 6465 | return 0; |
cbff28e8 RS |
6466 | } |
6467 | ||
6468 | return 1; | |
6469 | } | |
2f8274be RS |
6470 | |
6471 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
6472 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
6473 | doc: /* Compare two window configurations as regards the structure of windows. |
6474 | This function ignores details such as the values of point and mark | |
6475 | and scrolling positions. */) | |
5842a27b | 6476 | (Lisp_Object x, Lisp_Object y) |
2f8274be RS |
6477 | { |
6478 | if (compare_window_configurations (x, y, 1)) | |
6479 | return Qt; | |
6480 | return Qnil; | |
6481 | } | |
cbff28e8 | 6482 | \f |
dfcf069d | 6483 | void |
971de7fb | 6484 | init_window_once (void) |
7ab12479 | 6485 | { |
3224dac1 | 6486 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
6487 | XSETFRAME (selected_frame, f); |
6488 | Vterminal_frame = selected_frame; | |
e69b0960 DA |
6489 | minibuf_window = f->minibuffer_window; |
6490 | selected_window = f->selected_window; | |
1ae1a37d | 6491 | last_nonminibuf_frame = f; |
5b03d3c0 RS |
6492 | |
6493 | window_initialized = 1; | |
7ab12479 JB |
6494 | } |
6495 | ||
67492200 | 6496 | void |
971de7fb | 6497 | init_window (void) |
67492200 GM |
6498 | { |
6499 | Vwindow_list = Qnil; | |
6500 | } | |
6501 | ||
dfcf069d | 6502 | void |
971de7fb | 6503 | syms_of_window (void) |
7ab12479 | 6504 | { |
cd3520a4 JB |
6505 | DEFSYM (Qscroll_up, "scroll-up"); |
6506 | DEFSYM (Qscroll_down, "scroll-down"); | |
6507 | DEFSYM (Qscroll_command, "scroll-command"); | |
a4b000fb JL |
6508 | |
6509 | Fput (Qscroll_up, Qscroll_command, Qt); | |
6510 | Fput (Qscroll_down, Qscroll_command, Qt); | |
6511 | ||
cd3520a4 JB |
6512 | DEFSYM (Qwindow_configuration_change_hook, "window-configuration-change-hook"); |
6513 | DEFSYM (Qwindowp, "windowp"); | |
6514 | DEFSYM (Qwindow_configuration_p, "window-configuration-p"); | |
6515 | DEFSYM (Qwindow_live_p, "window-live-p"); | |
6516 | DEFSYM (Qwindow_deletable_p, "window-deletable-p"); | |
6517 | DEFSYM (Qdelete_window, "delete-window"); | |
5386012d MR |
6518 | DEFSYM (Qwindow_resize_root_window, "window--resize-root-window"); |
6519 | DEFSYM (Qwindow_resize_root_window_vertically, "window--resize-root-window-vertically"); | |
cd3520a4 JB |
6520 | DEFSYM (Qsafe, "safe"); |
6521 | DEFSYM (Qdisplay_buffer, "display-buffer"); | |
6522 | DEFSYM (Qreplace_buffer_in_windows, "replace-buffer-in-windows"); | |
6523 | DEFSYM (Qrecord_window_buffer, "record-window-buffer"); | |
6524 | DEFSYM (Qget_mru_window, "get-mru-window"); | |
6525 | DEFSYM (Qtemp_buffer_show_hook, "temp-buffer-show-hook"); | |
6526 | DEFSYM (Qabove, "above"); | |
6527 | DEFSYM (Qbelow, "below"); | |
6528 | DEFSYM (Qauto_buffer_name, "auto-buffer-name"); | |
6a6ee00d | 6529 | DEFSYM (Qclone_of, "clone-of"); |
b9e809c2 | 6530 | |
67492200 | 6531 | staticpro (&Vwindow_list); |
8bfb170b KS |
6532 | |
6533 | minibuf_selected_window = Qnil; | |
3dbab091 | 6534 | staticpro (&minibuf_selected_window); |
67492200 | 6535 | |
c876b227 | 6536 | window_scroll_pixel_based_preserve_x = -1; |
66fe93d1 | 6537 | window_scroll_pixel_based_preserve_y = -1; |
c876b227 SM |
6538 | window_scroll_preserve_hpos = -1; |
6539 | window_scroll_preserve_vpos = -1; | |
66d43aea | 6540 | |
29208e82 | 6541 | DEFVAR_LISP ("temp-buffer-show-function", Vtemp_buffer_show_function, |
fdb82f93 PJ |
6542 | doc: /* Non-nil means call as function to display a help buffer. |
6543 | The function is called with one argument, the buffer to be displayed. | |
6544 | Used by `with-output-to-temp-buffer'. | |
6545 | If this function is used, then it must do the entire job of showing | |
6546 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 | 6547 | Vtemp_buffer_show_function = Qnil; |
e10ac9f1 | 6548 | |
29208e82 | 6549 | DEFVAR_LISP ("minibuffer-scroll-window", Vminibuf_scroll_window, |
fdb82f93 | 6550 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
6551 | Vminibuf_scroll_window = Qnil; |
6552 | ||
29208e82 | 6553 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", mode_line_in_non_selected_windows, |
26124d5e | 6554 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
6555 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
6556 | is displayed in the `mode-line' face. */); | |
6557 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 6558 | |
29208e82 | 6559 | DEFVAR_LISP ("other-window-scroll-buffer", Vother_window_scroll_buffer, |
fdb82f93 | 6560 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
6561 | Vother_window_scroll_buffer = Qnil; |
6562 | ||
29208e82 | 6563 | DEFVAR_BOOL ("auto-window-vscroll", auto_window_vscroll_p, |
e10ac9f1 | 6564 | doc: /* Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); |
e56263e5 KS |
6565 | auto_window_vscroll_p = 1; |
6566 | ||
29208e82 | 6567 | DEFVAR_INT ("next-screen-context-lines", next_screen_context_lines, |
e10ac9f1 | 6568 | doc: /* Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
6569 | next_screen_context_lines = 2; |
6570 | ||
5500c422 | 6571 | DEFVAR_LISP ("scroll-preserve-screen-position", |
29208e82 | 6572 | Vscroll_preserve_screen_position, |
e10ac9f1 | 6573 | doc: /* Controls if scroll commands move point to keep its screen position unchanged. |
bdf4ec93 RS |
6574 | A value of nil means point does not keep its screen position except |
6575 | at the scroll margin or window boundary respectively. | |
6576 | A value of t means point keeps its screen position if the scroll | |
6577 | command moved it vertically out of the window, e.g. when scrolling | |
6578 | by full screens. | |
9013a7f8 | 6579 | Any other value means point always keeps its screen position. |
a4b000fb JL |
6580 | Scroll commands should have the `scroll-command' property |
6581 | on their symbols to be controlled by this variable. */); | |
5500c422 | 6582 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 6583 | |
29208e82 | 6584 | DEFVAR_LISP ("window-point-insertion-type", Vwindow_point_insertion_type, |
a1562258 SM |
6585 | doc: /* Type of marker to use for `window-point'. */); |
6586 | Vwindow_point_insertion_type = Qnil; | |
6587 | ||
543f5fb1 | 6588 | DEFVAR_LISP ("window-configuration-change-hook", |
29208e82 | 6589 | Vwindow_configuration_change_hook, |
fdb82f93 | 6590 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
6591 | The buffer-local part is run once per window, with the relevant window |
6592 | selected; while the global part is run only once for the modified frame, | |
6593 | with the relevant frame selected. */); | |
543f5fb1 RS |
6594 | Vwindow_configuration_change_hook = Qnil; |
6595 | ||
29208e82 | 6596 | DEFVAR_LISP ("recenter-redisplay", Vrecenter_redisplay, |
61d4b438 MR |
6597 | doc: /* Non-nil means `recenter' redraws entire frame. |
6598 | If this option is non-nil, then the `recenter' command with a nil | |
6599 | argument will redraw the entire frame; the special value `tty' causes | |
6600 | the frame to be redrawn only if it is a tty frame. */); | |
666e158e MB |
6601 | Vrecenter_redisplay = Qtty; |
6602 | ||
a0c2d0ae | 6603 | DEFVAR_LISP ("window-combination-resize", Vwindow_combination_resize, |
454592a6 | 6604 | doc: /* If t, resize window combinations proportionally. |
1a13852e | 6605 | If this variable is nil, splitting a window gets the entire screen space |
a0c2d0ae | 6606 | for displaying the new window from the window to split. Deleting and |
df85d315 | 6607 | resizing a window preferably resizes one adjacent window only. |
a0c2d0ae | 6608 | |
454592a6 | 6609 | If this variable is t, splitting a window tries to get the space |
a0c2d0ae MR |
6610 | proportionally from all windows in the same combination. This also |
6611 | allows to split a window that is otherwise too small or of fixed size. | |
6612 | Resizing and deleting a window proportionally resize all windows in the | |
6613 | same combination. | |
1a13852e | 6614 | |
454592a6 MR |
6615 | Other values are reserved for future use. |
6616 | ||
b6f67890 | 6617 | This variable takes no effect if `window-combination-limit' is non-nil. */); |
a0c2d0ae | 6618 | Vwindow_combination_resize = Qnil; |
1a13852e | 6619 | |
b6f67890 | 6620 | DEFVAR_LISP ("window-combination-limit", Vwindow_combination_limit, |
454592a6 | 6621 | doc: /* If t, splitting a window makes a new parent window. |
1a13852e MR |
6622 | If this variable is nil, splitting a window will create a new parent |
6623 | window only if the window has no parent window or the window shall | |
58179cce | 6624 | become a combination orthogonal to the one it is part of. |
1a13852e | 6625 | |
b6f67890 MR |
6626 | If this variable is t, splitting a window always creates a new parent |
6627 | window. If all splits behave this way, each frame's window tree is a | |
6628 | binary tree and every window but the frame's root window has exactly one | |
6629 | sibling. | |
1a13852e | 6630 | |
b6f67890 | 6631 | Other values are reserved for future use. |
1a13852e | 6632 | |
d2999b1a MR |
6633 | The value of this variable is also assigned to the combination limit of |
6634 | the new parent window. The combination limit of a window can be | |
6635 | retrieved via the function `window-combination-limit' and altered by the | |
6636 | function `set-window-combination-limit'. */); | |
b6f67890 | 6637 | Vwindow_combination_limit = Qnil; |
666e158e | 6638 | |
6a6ee00d MR |
6639 | DEFVAR_LISP ("window-persistent-parameters", Vwindow_persistent_parameters, |
6640 | doc: /* Alist of persistent window parameters. | |
34a02f46 MR |
6641 | This alist specifies which window parameters shall get saved by |
6642 | `current-window-configuration' and `window-state-get' and subsequently | |
6643 | restored to their previous values by `set-window-configuration' and | |
6644 | `window-state-put'. | |
6a6ee00d MR |
6645 | |
6646 | The car of each entry of this alist is the symbol specifying the | |
6647 | parameter. The cdr is one of the following: | |
6648 | ||
34a02f46 MR |
6649 | nil means the parameter is neither saved by `window-state-get' nor by |
6650 | `current-window-configuration'. | |
6a6ee00d | 6651 | |
34a02f46 MR |
6652 | t means the parameter is saved by `current-window-configuration' and, |
6653 | provided its WRITABLE argument is nil, by `window-state-get'. | |
6a6ee00d | 6654 | |
34a02f46 MR |
6655 | The symbol `writable' means the parameter is saved unconditionally by |
6656 | both `current-window-configuration' and `window-state-get'. Do not use | |
6657 | this value for parameters without read syntax (like windows or frames). | |
6a6ee00d MR |
6658 | |
6659 | Parameters not saved by `current-window-configuration' or | |
6660 | `window-state-get' are left alone by `set-window-configuration' | |
6661 | respectively are not installed by `window-state-put'. */); | |
34a02f46 | 6662 | Vwindow_persistent_parameters = list1 (Fcons (Qclone_of, Qt)); |
6a6ee00d | 6663 | |
7ab12479 JB |
6664 | defsubr (&Sselected_window); |
6665 | defsubr (&Sminibuffer_window); | |
6666 | defsubr (&Swindow_minibuffer_p); | |
6667 | defsubr (&Swindowp); | |
806b4d9b | 6668 | defsubr (&Swindow_live_p); |
727e958e MR |
6669 | defsubr (&Swindow_frame); |
6670 | defsubr (&Sframe_root_window); | |
6671 | defsubr (&Sframe_first_window); | |
6672 | defsubr (&Sframe_selected_window); | |
6673 | defsubr (&Sset_frame_selected_window); | |
7ab12479 | 6674 | defsubr (&Spos_visible_in_window_p); |
536833ab | 6675 | defsubr (&Swindow_line_height); |
7ab12479 | 6676 | defsubr (&Swindow_buffer); |
bf60a96b | 6677 | defsubr (&Swindow_parent); |
d68443dc MR |
6678 | defsubr (&Swindow_top_child); |
6679 | defsubr (&Swindow_left_child); | |
6680 | defsubr (&Swindow_next_sibling); | |
6681 | defsubr (&Swindow_prev_sibling); | |
b6f67890 MR |
6682 | defsubr (&Swindow_combination_limit); |
6683 | defsubr (&Sset_window_combination_limit); | |
abde8f8c MR |
6684 | defsubr (&Swindow_use_time); |
6685 | defsubr (&Swindow_top_line); | |
6686 | defsubr (&Swindow_left_column); | |
105216ed CY |
6687 | defsubr (&Swindow_total_height); |
6688 | defsubr (&Swindow_total_width); | |
496e208e MR |
6689 | defsubr (&Swindow_normal_size); |
6690 | defsubr (&Swindow_new_total); | |
6691 | defsubr (&Swindow_new_normal); | |
6692 | defsubr (&Sset_window_new_total); | |
6693 | defsubr (&Sset_window_new_normal); | |
d615d6d2 | 6694 | defsubr (&Swindow_resize_apply); |
105216ed CY |
6695 | defsubr (&Swindow_body_height); |
6696 | defsubr (&Swindow_body_width); | |
7ab12479 JB |
6697 | defsubr (&Swindow_hscroll); |
6698 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
6699 | defsubr (&Swindow_redisplay_end_trigger); |
6700 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 6701 | defsubr (&Swindow_edges); |
c99a9eb3 | 6702 | defsubr (&Swindow_pixel_edges); |
9d5405ec | 6703 | defsubr (&Swindow_absolute_pixel_edges); |
c99a9eb3 RS |
6704 | defsubr (&Swindow_inside_edges); |
6705 | defsubr (&Swindow_inside_pixel_edges); | |
9d5405ec | 6706 | defsubr (&Swindow_inside_absolute_pixel_edges); |
d5783c40 JB |
6707 | defsubr (&Scoordinates_in_window_p); |
6708 | defsubr (&Swindow_at); | |
7ab12479 JB |
6709 | defsubr (&Swindow_point); |
6710 | defsubr (&Swindow_start); | |
6711 | defsubr (&Swindow_end); | |
6712 | defsubr (&Sset_window_point); | |
6713 | defsubr (&Sset_window_start); | |
6714 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 6715 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
6716 | defsubr (&Swindow_display_table); |
6717 | defsubr (&Sset_window_display_table); | |
6718 | defsubr (&Snext_window); | |
6719 | defsubr (&Sprevious_window); | |
7ab12479 | 6720 | defsubr (&Sget_buffer_window); |
1a13852e MR |
6721 | defsubr (&Sdelete_other_windows_internal); |
6722 | defsubr (&Sdelete_window_internal); | |
6723 | defsubr (&Sresize_mini_window_internal); | |
7ab12479 | 6724 | defsubr (&Sset_window_buffer); |
1a13852e | 6725 | defsubr (&Srun_window_configuration_change_hook); |
7ab12479 | 6726 | defsubr (&Sselect_window); |
6b61353c | 6727 | defsubr (&Sforce_window_update); |
3e21b6a7 | 6728 | defsubr (&Stemp_output_buffer_show); |
1a13852e | 6729 | defsubr (&Ssplit_window_internal); |
7ab12479 JB |
6730 | defsubr (&Sscroll_up); |
6731 | defsubr (&Sscroll_down); | |
6732 | defsubr (&Sscroll_left); | |
6733 | defsubr (&Sscroll_right); | |
ccd0664b | 6734 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 6735 | defsubr (&Sscroll_other_window); |
fa832261 | 6736 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 6737 | defsubr (&Srecenter); |
81fe0836 | 6738 | defsubr (&Swindow_text_height); |
7ab12479 JB |
6739 | defsubr (&Smove_to_window_line); |
6740 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 6741 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
6742 | defsubr (&Sset_window_configuration); |
6743 | defsubr (&Scurrent_window_configuration); | |
5500c422 GM |
6744 | defsubr (&Sset_window_margins); |
6745 | defsubr (&Swindow_margins); | |
949cf20f KS |
6746 | defsubr (&Sset_window_fringes); |
6747 | defsubr (&Swindow_fringes); | |
6748 | defsubr (&Sset_window_scroll_bars); | |
6749 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
6750 | defsubr (&Swindow_vscroll); |
6751 | defsubr (&Sset_window_vscroll); | |
2f8274be | 6752 | defsubr (&Scompare_window_configurations); |
67492200 | 6753 | defsubr (&Swindow_list); |
abde8f8c | 6754 | defsubr (&Swindow_list_1); |
496e208e MR |
6755 | defsubr (&Swindow_prev_buffers); |
6756 | defsubr (&Sset_window_prev_buffers); | |
6757 | defsubr (&Swindow_next_buffers); | |
6758 | defsubr (&Sset_window_next_buffers); | |
cfbb2395 JB |
6759 | defsubr (&Swindow_parameters); |
6760 | defsubr (&Swindow_parameter); | |
6761 | defsubr (&Sset_window_parameter); | |
7ab12479 JB |
6762 | } |
6763 | ||
dfcf069d | 6764 | void |
971de7fb | 6765 | keys_of_window (void) |
7ab12479 | 6766 | { |
7ab12479 JB |
6767 | initial_define_key (control_x_map, '<', "scroll-left"); |
6768 | initial_define_key (control_x_map, '>', "scroll-right"); | |
6769 | ||
32129746 | 6770 | initial_define_key (global_map, Ctl ('V'), "scroll-up-command"); |
7ab12479 | 6771 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); |
32129746 | 6772 | initial_define_key (meta_map, 'v', "scroll-down-command"); |
7ab12479 | 6773 | } |