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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
73b0cd50 | 3 | Copyright (C) 1985-1987, 1993-1998, 2000-2011 |
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 JB |
25 | #include "lisp.h" |
26 | #include "buffer.h" | |
3e4731a3 | 27 | #include "keyboard.h" |
e35f6ff7 | 28 | #include "keymap.h" |
44fa5b1e | 29 | #include "frame.h" |
7ab12479 JB |
30 | #include "window.h" |
31 | #include "commands.h" | |
32 | #include "indent.h" | |
33 | #include "termchar.h" | |
34 | #include "disptab.h" | |
dfcf069d | 35 | #include "dispextern.h" |
5500c422 GM |
36 | #include "blockinput.h" |
37 | #include "intervals.h" | |
de509a60 | 38 | #include "termhooks.h" /* For FRAME_TERMINAL. */ |
5500c422 | 39 | |
6d55d620 | 40 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 41 | #include "xterm.h" |
5500c422 | 42 | #endif /* HAVE_X_WINDOWS */ |
8f23f280 AI |
43 | #ifdef WINDOWSNT |
44 | #include "w32term.h" | |
45 | #endif | |
1e3c8885 EZ |
46 | #ifdef MSDOS |
47 | #include "msdos.h" | |
48 | #endif | |
edfda783 AR |
49 | #ifdef HAVE_NS |
50 | #include "nsterm.h" | |
51 | #endif | |
5500c422 | 52 | |
9397e56f | 53 | Lisp_Object Qwindowp, Qwindow_live_p; |
b9e809c2 | 54 | static Lisp_Object Qwindow_configuration_p, Qrecord_window_buffer; |
9397e56f | 55 | static Lisp_Object Qwindow_deletable_p, Qdelete_window, Qdisplay_buffer; |
b9e809c2 | 56 | static Lisp_Object Qreplace_buffer_in_windows, Qget_mru_window; |
5386012d | 57 | static Lisp_Object Qwindow_resize_root_window, Qwindow_resize_root_window_vertically; |
955cbe7b | 58 | static Lisp_Object Qscroll_up, Qscroll_down, Qscroll_command; |
b9e809c2 MR |
59 | static Lisp_Object Qsafe, Qabove, Qbelow; |
60 | static Lisp_Object Qauto_buffer_name; | |
61 | ||
f57e2426 J |
62 | static int displayed_window_lines (struct window *); |
63 | static struct window *decode_window (Lisp_Object); | |
64 | static int count_windows (struct window *); | |
65 | static int get_leaf_windows (struct window *, struct window **, int); | |
66 | static void window_scroll (Lisp_Object, int, int, int); | |
67 | static void window_scroll_pixel_based (Lisp_Object, int, int, int); | |
68 | static void window_scroll_line_based (Lisp_Object, int, int, int); | |
f57e2426 | 69 | static int freeze_window_start (struct window *, void *); |
f57e2426 J |
70 | static Lisp_Object window_list (void); |
71 | static int add_window_to_list (struct window *, void *); | |
72 | static int candidate_window_p (Lisp_Object, Lisp_Object, Lisp_Object, | |
73 | Lisp_Object); | |
74 | static Lisp_Object next_window (Lisp_Object, Lisp_Object, | |
75 | Lisp_Object, int); | |
76 | static void decode_next_window_args (Lisp_Object *, Lisp_Object *, | |
77 | Lisp_Object *); | |
2f7c71a1 | 78 | static void foreach_window (struct frame *, |
f95464e4 | 79 | int (* fn) (struct window *, void *), |
2f7c71a1 | 80 | void *); |
f57e2426 J |
81 | static int foreach_window_1 (struct window *, |
82 | int (* fn) (struct window *, void *), | |
83 | void *); | |
84 | static Lisp_Object window_list_1 (Lisp_Object, Lisp_Object, Lisp_Object); | |
d615d6d2 MR |
85 | static int window_resize_check (struct window *, int); |
86 | static void window_resize_apply (struct window *, int); | |
7c82f3e2 | 87 | static Lisp_Object select_window (Lisp_Object, Lisp_Object, int); |
b7354ddf | 88 | |
7ab12479 JB |
89 | /* This is the window in which the terminal's cursor should |
90 | be left when nothing is being done with it. This must | |
91 | always be a leaf window, and its buffer is selected by | |
92 | the top level editing loop at the end of each command. | |
93 | ||
94 | This value is always the same as | |
44fa5b1e | 95 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
96 | Lisp_Object selected_window; |
97 | ||
67492200 GM |
98 | /* A list of all windows for use by next_window and Fwindow_list. |
99 | Functions creating or deleting windows should invalidate this cache | |
100 | by setting it to nil. */ | |
67492200 GM |
101 | Lisp_Object Vwindow_list; |
102 | ||
5500c422 GM |
103 | /* The mini-buffer window of the selected frame. |
104 | Note that you cannot test for mini-bufferness of an arbitrary window | |
105 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 JB |
106 | the selected window. */ |
107 | Lisp_Object minibuf_window; | |
108 | ||
3f49fddc KS |
109 | /* Non-nil means it is the window whose mode line should be |
110 | shown as the selected window when the minibuffer is selected. */ | |
3dbab091 | 111 | Lisp_Object minibuf_selected_window; |
3f49fddc | 112 | |
a58ec57d | 113 | /* Hook run at end of temp_output_buffer_show. */ |
955cbe7b | 114 | static Lisp_Object Qtemp_buffer_show_hook; |
a58ec57d | 115 | |
7ab12479 JB |
116 | /* Incremented for each window created. */ |
117 | static int sequence_number; | |
118 | ||
5b03d3c0 RS |
119 | /* Nonzero after init_window_once has finished. */ |
120 | static int window_initialized; | |
121 | ||
543f5fb1 | 122 | /* Hook to run when window config changes. */ |
eeca6f6f | 123 | static Lisp_Object Qwindow_configuration_change_hook; |
0d384044 | 124 | |
66d43aea | 125 | /* Used by the function window_scroll_pixel_based */ |
c876b227 | 126 | static int window_scroll_pixel_based_preserve_x; |
66fe93d1 | 127 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 128 | |
c876b227 | 129 | /* Same for window_scroll_line_based. */ |
c876b227 SM |
130 | static int window_scroll_preserve_hpos; |
131 | static int window_scroll_preserve_vpos; | |
f230ecc9 MR |
132 | \f |
133 | static struct window * | |
134 | decode_window (register Lisp_Object window) | |
135 | { | |
136 | if (NILP (window)) | |
137 | return XWINDOW (selected_window); | |
c876b227 | 138 | |
f230ecc9 MR |
139 | CHECK_LIVE_WINDOW (window); |
140 | return XWINDOW (window); | |
141 | } | |
142 | ||
143 | static struct window * | |
144 | decode_any_window (register Lisp_Object window) | |
145 | { | |
146 | if (NILP (window)) | |
147 | return XWINDOW (selected_window); | |
148 | ||
149 | CHECK_WINDOW (window); | |
150 | return XWINDOW (window); | |
151 | } | |
666e158e | 152 | |
7ab12479 | 153 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, |
f230ecc9 | 154 | doc: /* Return t if OBJECT is a window and nil otherwise. */) |
5842a27b | 155 | (Lisp_Object object) |
7ab12479 | 156 | { |
413430c5 | 157 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
158 | } |
159 | ||
806b4d9b | 160 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
f230ecc9 | 161 | doc: /* Return t if OBJECT is a live window and nil otherwise. |
49745b39 CY |
162 | A live window is a window that displays a buffer. |
163 | Internal windows and deleted windows are not live. */) | |
5842a27b | 164 | (Lisp_Object object) |
605be8af | 165 | { |
9e571f49 | 166 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af | 167 | } |
727e958e MR |
168 | \f |
169 | /* Frames and windows. */ | |
170 | DEFUN ("window-frame", Fwindow_frame, Swindow_frame, 1, 1, 0, | |
171 | doc: /* Return the frame that window WINDOW is on. | |
49745b39 | 172 | If WINDOW is omitted or nil, it defaults to the selected window. */) |
727e958e MR |
173 | (Lisp_Object window) |
174 | { | |
175 | return decode_any_window (window)->frame; | |
176 | } | |
177 | ||
178 | DEFUN ("frame-root-window", Fframe_root_window, Sframe_root_window, 0, 1, 0, | |
87e68db4 JB |
179 | doc: /* Return the root window of FRAME-OR-WINDOW. |
180 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
49745b39 CY |
181 | With a frame argument, return that frame's root window. |
182 | With a window argument, return the root window of that window's frame. */) | |
727e958e MR |
183 | (Lisp_Object frame_or_window) |
184 | { | |
185 | Lisp_Object window; | |
186 | ||
187 | if (NILP (frame_or_window)) | |
188 | window = SELECTED_FRAME ()->root_window; | |
189 | else if (WINDOWP (frame_or_window)) | |
190 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window; | |
191 | else | |
192 | { | |
193 | CHECK_LIVE_FRAME (frame_or_window); | |
194 | window = XFRAME (frame_or_window)->root_window; | |
195 | } | |
196 | ||
197 | return window; | |
198 | } | |
199 | ||
200 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, | |
49745b39 CY |
201 | doc: /* Return the minibuffer window for frame FRAME. |
202 | If FRAME is omitted or nil, it defaults to the selected frame. */) | |
727e958e MR |
203 | (Lisp_Object frame) |
204 | { | |
205 | if (NILP (frame)) | |
206 | frame = selected_frame; | |
207 | CHECK_LIVE_FRAME (frame); | |
208 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); | |
209 | } | |
210 | ||
211 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, | |
212 | Swindow_minibuffer_p, 0, 1, 0, | |
213 | doc: /* Return non-nil if WINDOW is a minibuffer window. | |
49745b39 | 214 | If WINDOW is omitted or nil, it defaults to the selected window. */) |
727e958e MR |
215 | (Lisp_Object window) |
216 | { | |
217 | return MINI_WINDOW_P (decode_any_window (window)) ? Qt : Qnil; | |
218 | } | |
219 | ||
220 | /* Don't move this to window.el - this must be a safe routine. */ | |
221 | DEFUN ("frame-first-window", Fframe_first_window, Sframe_first_window, 0, 1, 0, | |
87e68db4 JB |
222 | doc: /* Return the topmost, leftmost live window on FRAME-OR-WINDOW. |
223 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
224 | Else if FRAME-OR-WINDOW denotes any window, return the first window of | |
225 | that window's frame. If FRAME-OR-WINDOW denotes a live frame, return | |
727e958e MR |
226 | the first window of that frame. */) |
227 | (Lisp_Object frame_or_window) | |
228 | { | |
229 | Lisp_Object window; | |
230 | ||
231 | if (NILP (frame_or_window)) | |
232 | window = SELECTED_FRAME ()->root_window; | |
233 | else if (WINDOWP (frame_or_window)) | |
234 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window; | |
235 | else | |
236 | { | |
237 | CHECK_LIVE_FRAME (frame_or_window); | |
238 | window = XFRAME (frame_or_window)->root_window; | |
239 | } | |
240 | ||
241 | while (NILP (XWINDOW (window)->buffer)) | |
242 | { | |
243 | if (! NILP (XWINDOW (window)->hchild)) | |
244 | window = XWINDOW (window)->hchild; | |
245 | else if (! NILP (XWINDOW (window)->vchild)) | |
246 | window = XWINDOW (window)->vchild; | |
247 | else | |
248 | abort (); | |
249 | } | |
250 | ||
251 | return window; | |
252 | } | |
253 | ||
254 | DEFUN ("frame-selected-window", Fframe_selected_window, | |
255 | Sframe_selected_window, 0, 1, 0, | |
87e68db4 JB |
256 | doc: /* Return the selected window of FRAME-OR-WINDOW. |
257 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
258 | Else if FRAME-OR-WINDOW denotes any window, return the selected window | |
259 | of that window's frame. If FRAME-OR-WINDOW denotes a live frame, return | |
727e958e MR |
260 | the selected window of that frame. */) |
261 | (Lisp_Object frame_or_window) | |
262 | { | |
263 | Lisp_Object window; | |
264 | ||
265 | if (NILP (frame_or_window)) | |
266 | window = SELECTED_FRAME ()->selected_window; | |
267 | else if (WINDOWP (frame_or_window)) | |
268 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->selected_window; | |
269 | else | |
270 | { | |
271 | CHECK_LIVE_FRAME (frame_or_window); | |
272 | window = XFRAME (frame_or_window)->selected_window; | |
273 | } | |
274 | ||
275 | return window; | |
276 | } | |
277 | ||
278 | DEFUN ("set-frame-selected-window", Fset_frame_selected_window, | |
279 | Sset_frame_selected_window, 2, 3, 0, | |
280 | doc: /* Set selected window of FRAME to WINDOW. | |
281 | FRAME must be a live frame and defaults to the selected one. If FRAME | |
282 | is the selected frame, this makes WINDOW the selected window. Optional | |
283 | argument NORECORD non-nil means to neither change the order of recently | |
284 | selected windows nor the buffer list. WINDOW must denote a live window. | |
285 | Return WINDOW. */) | |
286 | (Lisp_Object frame, Lisp_Object window, Lisp_Object norecord) | |
287 | { | |
288 | if (NILP (frame)) | |
289 | frame = selected_frame; | |
290 | ||
291 | CHECK_LIVE_FRAME (frame); | |
292 | CHECK_LIVE_WINDOW (window); | |
293 | ||
294 | if (! EQ (frame, WINDOW_FRAME (XWINDOW (window)))) | |
295 | error ("In `set-frame-selected-window', WINDOW is not on FRAME"); | |
296 | ||
297 | if (EQ (frame, selected_frame)) | |
298 | return Fselect_window (window, norecord); | |
299 | else | |
300 | return XFRAME (frame)->selected_window = window; | |
301 | } | |
302 | ||
303 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
304 | doc: /* Return the selected window. | |
305 | The selected window is the window in which the standard cursor for | |
306 | selected windows appears and to which many commands apply. */) | |
307 | (void) | |
308 | { | |
309 | return selected_window; | |
310 | } | |
311 | ||
9397e56f MR |
312 | int window_select_count; |
313 | ||
727e958e MR |
314 | /* If select_window is called with inhibit_point_swap non-zero it will |
315 | not store point of the old selected window's buffer back into that | |
316 | window's pointm slot. This is needed by Fset_window_configuration to | |
317 | avoid that the display routine is called with selected_window set to | |
318 | Qnil causing a subsequent crash. */ | |
319 | static Lisp_Object | |
320 | select_window (Lisp_Object window, Lisp_Object norecord, int inhibit_point_swap) | |
321 | { | |
322 | register struct window *w; | |
323 | register struct window *ow; | |
324 | struct frame *sf; | |
325 | ||
326 | CHECK_LIVE_WINDOW (window); | |
327 | ||
328 | w = XWINDOW (window); | |
329 | w->frozen_window_start_p = 0; | |
330 | ||
331 | if (NILP (norecord)) | |
332 | { | |
333 | ++window_select_count; | |
334 | XSETFASTINT (w->use_time, window_select_count); | |
335 | record_buffer (w->buffer); | |
336 | } | |
337 | ||
338 | if (EQ (window, selected_window) && !inhibit_point_swap) | |
339 | return window; | |
340 | ||
341 | sf = SELECTED_FRAME (); | |
342 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
343 | { | |
344 | XFRAME (WINDOW_FRAME (w))->selected_window = window; | |
345 | /* Use this rather than Fhandle_switch_frame | |
346 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
347 | move around in the state where a minibuffer in a separate | |
348 | frame is active. */ | |
349 | Fselect_frame (WINDOW_FRAME (w), norecord); | |
350 | /* Fselect_frame called us back so we've done all the work already. */ | |
351 | eassert (EQ (window, selected_window)); | |
352 | return window; | |
353 | } | |
354 | else | |
355 | sf->selected_window = window; | |
356 | ||
357 | /* Store the current buffer's actual point into the | |
358 | old selected window. It belongs to that window, | |
359 | and when the window is not selected, must be in the window. */ | |
360 | if (!inhibit_point_swap) | |
361 | { | |
362 | ow = XWINDOW (selected_window); | |
363 | if (! NILP (ow->buffer)) | |
364 | set_marker_both (ow->pointm, ow->buffer, | |
365 | BUF_PT (XBUFFER (ow->buffer)), | |
366 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
367 | } | |
368 | ||
369 | selected_window = window; | |
370 | ||
371 | Fset_buffer (w->buffer); | |
372 | ||
373 | BVAR (XBUFFER (w->buffer), last_selected_window) = window; | |
374 | ||
375 | /* Go to the point recorded in the window. | |
376 | This is important when the buffer is in more | |
377 | than one window. It also matters when | |
378 | redisplay_window has altered point after scrolling, | |
379 | because it makes the change only in the window. */ | |
380 | { | |
381 | register EMACS_INT new_point = marker_position (w->pointm); | |
382 | if (new_point < BEGV) | |
383 | SET_PT (BEGV); | |
384 | else if (new_point > ZV) | |
385 | SET_PT (ZV); | |
386 | else | |
387 | SET_PT (new_point); | |
388 | } | |
389 | ||
390 | windows_or_buffers_changed++; | |
391 | return window; | |
392 | } | |
393 | ||
394 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, | |
395 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. | |
396 | Also make WINDOW's buffer current and make WINDOW the frame's selected | |
397 | window. Return WINDOW. | |
398 | ||
399 | Optional second arg NORECORD non-nil means do not put this buffer at the | |
400 | front of the buffer list and do not make this window the most recently | |
401 | selected one. | |
605be8af | 402 | |
727e958e MR |
403 | Note that the main editor command loop sets the current buffer to the |
404 | buffer of the selected window before each command. */) | |
405 | (register Lisp_Object window, Lisp_Object norecord) | |
406 | { | |
407 | return select_window (window, norecord, 0); | |
408 | } | |
409 | \f | |
bf60a96b | 410 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
49745b39 CY |
411 | doc: /* Return the buffer displayed in window WINDOW. |
412 | If WINDOW is omitted or nil, it defaults to the selected window. | |
413 | Return nil for an internal window or a deleted window. */) | |
bf60a96b MR |
414 | (Lisp_Object window) |
415 | { | |
416 | return decode_any_window (window)->buffer; | |
417 | } | |
418 | ||
419 | DEFUN ("window-parent", Fwindow_parent, Swindow_parent, 0, 1, 0, | |
49745b39 CY |
420 | doc: /* Return the parent window of window WINDOW. |
421 | If WINDOW is omitted or nil, it defaults to the selected window. | |
422 | Return nil for a window with no parent (e.g. a root window). */) | |
bf60a96b MR |
423 | (Lisp_Object window) |
424 | { | |
425 | return decode_any_window (window)->parent; | |
426 | } | |
427 | ||
49745b39 CY |
428 | DEFUN ("window-top-child", Fwindow_top_child, Swindow_top_child, 1, 1, 0, |
429 | doc: /* Return the topmost child window of window WINDOW. | |
430 | Return nil if WINDOW is a live window (live windows have no children). | |
431 | Return nil if WINDOW is an internal window whose children form a | |
432 | horizontal combination. */) | |
bf60a96b MR |
433 | (Lisp_Object window) |
434 | { | |
49745b39 | 435 | CHECK_WINDOW (window); |
bf60a96b MR |
436 | return decode_any_window (window)->vchild; |
437 | } | |
438 | ||
49745b39 CY |
439 | DEFUN ("window-left-child", Fwindow_left_child, Swindow_left_child, 1, 1, 0, |
440 | doc: /* Return the leftmost child window of window WINDOW. | |
441 | Return nil if WINDOW is a live window (live windows have no children). | |
442 | Return nil if WINDOW is an internal window whose children form a | |
443 | vertical combination. */) | |
bf60a96b MR |
444 | (Lisp_Object window) |
445 | { | |
49745b39 | 446 | CHECK_WINDOW (window); |
bf60a96b MR |
447 | return decode_any_window (window)->hchild; |
448 | } | |
449 | ||
d68443dc | 450 | DEFUN ("window-next-sibling", Fwindow_next_sibling, Swindow_next_sibling, 0, 1, 0, |
49745b39 CY |
451 | doc: /* Return the next sibling window of window WINDOW. |
452 | If WINDOW is omitted or nil, it defaults to the selected window. | |
d68443dc | 453 | Return nil if WINDOW has no next sibling. */) |
bf60a96b MR |
454 | (Lisp_Object window) |
455 | { | |
456 | return decode_any_window (window)->next; | |
457 | } | |
458 | ||
d68443dc | 459 | DEFUN ("window-prev-sibling", Fwindow_prev_sibling, Swindow_prev_sibling, 0, 1, 0, |
49745b39 CY |
460 | doc: /* Return the previous sibling window of window WINDOW. |
461 | If WINDOW is omitted or nil, it defaults to the selected window. | |
d68443dc | 462 | Return nil if WINDOW has no previous sibling. */) |
bf60a96b MR |
463 | (Lisp_Object window) |
464 | { | |
465 | return decode_any_window (window)->prev; | |
466 | } | |
67492200 | 467 | |
df05a53c | 468 | DEFUN ("window-combination-limit", Fwindow_combination_limit, Swindow_combination_limit, 1, 1, 0, |
b6f67890 | 469 | doc: /* Return combination limit of window WINDOW. |
be7f5545 | 470 | If the return value is nil, child windows of WINDOW can be recombined with |
b6f67890 | 471 | WINDOW's siblings. A return value of t means that child windows of |
496e208e MR |
472 | WINDOW are never \(re-)combined with WINDOW's siblings. */) |
473 | (Lisp_Object window) | |
474 | { | |
b6f67890 | 475 | return decode_any_window (window)->combination_limit; |
496e208e | 476 | } |
b3a10345 | 477 | |
b6f67890 | 478 | DEFUN ("set-window-combination-limit", Fset_window_combination_limit, Sset_window_combination_limit, 2, 2, 0, |
d2999b1a MR |
479 | doc: /* Set combination limit of window WINDOW to LIMIT; return LIMIT. |
480 | If LIMIT is nil, child windows of WINDOW can be recombined with | |
481 | WINDOW's siblings. LIMIT t means that child windows of WINDOW are | |
b6f67890 MR |
482 | never \(re-)combined with WINDOW's siblings. Other values are reserved |
483 | for future use. */) | |
d2999b1a | 484 | (Lisp_Object window, Lisp_Object limit) |
496e208e MR |
485 | { |
486 | register struct window *w = decode_any_window (window); | |
536833ab | 487 | |
d2999b1a | 488 | w->combination_limit = limit; |
b3a10345 | 489 | |
b6f67890 | 490 | return w->combination_limit; |
496e208e | 491 | } |
b3a10345 | 492 | |
496e208e | 493 | DEFUN ("window-use-time", Fwindow_use_time, Swindow_use_time, 0, 1, 0, |
49745b39 CY |
494 | doc: /* Return the use time of window WINDOW. |
495 | If WINDOW is omitted or nil, it defaults to the selected window. | |
496 | The window with the highest use time is the most recently selected | |
497 | one. The window with the lowest use time is the least recently | |
498 | selected one. */) | |
496e208e MR |
499 | (Lisp_Object window) |
500 | { | |
501 | return decode_window (window)->use_time; | |
b3a10345 | 502 | } |
abde8f8c | 503 | \f |
105216ed CY |
504 | DEFUN ("window-total-height", Fwindow_total_height, Swindow_total_height, 0, 1, 0, |
505 | doc: /* Return the total height, in lines, of window WINDOW. | |
49745b39 CY |
506 | If WINDOW is omitted or nil, it defaults to the selected window. |
507 | ||
105216ed CY |
508 | The return value includes the mode line and header line, if any. |
509 | If WINDOW is an internal window, the total height is the height | |
510 | of the screen areas spanned by its children. | |
511 | ||
512 | On a graphical display, this total height is reported as an | |
513 | integer multiple of the default character height. */) | |
514 | (Lisp_Object window) | |
abde8f8c | 515 | { |
105216ed CY |
516 | return decode_any_window (window)->total_lines; |
517 | } | |
518 | ||
519 | DEFUN ("window-total-width", Fwindow_total_width, Swindow_total_width, 0, 1, 0, | |
520 | doc: /* Return the total width, in columns, of window WINDOW. | |
521 | If WINDOW is omitted or nil, it defaults to the selected window. | |
522 | ||
523 | The return value includes any vertical dividers or scroll bars | |
524 | belonging to WINDOW. If WINDOW is an internal window, the total width | |
525 | is the width of the screen areas spanned by its children. | |
526 | ||
527 | On a graphical display, this total width is reported as an | |
528 | integer multiple of the default character width. */) | |
529 | (Lisp_Object window) | |
530 | { | |
531 | return decode_any_window (window)->total_cols; | |
abde8f8c | 532 | } |
b3a10345 | 533 | |
496e208e | 534 | DEFUN ("window-new-total", Fwindow_new_total, Swindow_new_total, 0, 1, 0, |
49745b39 CY |
535 | doc: /* Return the new total size of window WINDOW. |
536 | If WINDOW is omitted or nil, it defaults to the selected window. */) | |
496e208e MR |
537 | (Lisp_Object window) |
538 | { | |
539 | return decode_any_window (window)->new_total; | |
540 | } | |
541 | ||
542 | DEFUN ("window-normal-size", Fwindow_normal_size, Swindow_normal_size, 0, 2, 0, | |
49745b39 CY |
543 | doc: /* Return the normal height of window WINDOW. |
544 | If WINDOW is omitted or nil, it defaults to the selected window. | |
545 | If HORIZONTAL is non-nil, return the normal width of WINDOW. */) | |
496e208e MR |
546 | (Lisp_Object window, Lisp_Object horizontal) |
547 | { | |
548 | if (NILP (horizontal)) | |
549 | return decode_any_window (window)->normal_lines; | |
550 | else | |
551 | return decode_any_window (window)->normal_cols; | |
552 | } | |
553 | ||
554 | DEFUN ("window-new-normal", Fwindow_new_normal, Swindow_new_normal, 0, 1, 0, | |
49745b39 CY |
555 | doc: /* Return new normal size of window WINDOW. |
556 | If WINDOW is omitted or nil, it defaults to the selected window. */) | |
496e208e MR |
557 | (Lisp_Object window) |
558 | { | |
559 | return decode_any_window (window)->new_normal; | |
560 | } | |
561 | ||
abde8f8c | 562 | DEFUN ("window-left-column", Fwindow_left_column, Swindow_left_column, 0, 1, 0, |
49745b39 | 563 | doc: /* Return left column of window WINDOW. |
105216ed CY |
564 | This is the distance, in columns, between the left edge of WINDOW and |
565 | the left edge of the frame's window area. For instance, the return | |
566 | value is 0 if there is no window to the left of WINDOW. | |
567 | ||
49745b39 | 568 | If WINDOW is omitted or nil, it defaults to the selected window. */) |
abde8f8c MR |
569 | (Lisp_Object window) |
570 | { | |
571 | return decode_any_window (window)->left_col; | |
572 | } | |
573 | ||
574 | DEFUN ("window-top-line", Fwindow_top_line, Swindow_top_line, 0, 1, 0, | |
49745b39 | 575 | doc: /* Return top line of window WINDOW. |
105216ed CY |
576 | This is the distance, in lines, between the top of WINDOW and the top |
577 | of the frame's window area. For instance, the return value is 0 if | |
578 | there is no window above WINDOW. | |
579 | ||
49745b39 | 580 | If WINDOW is omitted or nil, it defaults to the selected window. */) |
abde8f8c MR |
581 | (Lisp_Object window) |
582 | { | |
583 | return decode_any_window (window)->top_line; | |
584 | } | |
585 | ||
586 | /* Return the number of lines of W's body. Don't count any mode or | |
587 | header line of W. */ | |
588 | ||
46a4ce9e | 589 | static int |
abde8f8c MR |
590 | window_body_lines (struct window *w) |
591 | { | |
592 | int height = XFASTINT (w->total_lines); | |
593 | ||
594 | if (!MINI_WINDOW_P (w)) | |
595 | { | |
596 | if (WINDOW_WANTS_MODELINE_P (w)) | |
597 | --height; | |
598 | if (WINDOW_WANTS_HEADER_LINE_P (w)) | |
599 | --height; | |
600 | } | |
601 | ||
602 | return height; | |
603 | } | |
604 | ||
605 | /* Return the number of columns of W's body. Don't count columns | |
606 | occupied by the scroll bar or the vertical bar separating W from its | |
607 | right sibling. On window-systems don't count fringes or display | |
608 | margins either. */ | |
609 | ||
610 | int | |
611 | window_body_cols (struct window *w) | |
612 | { | |
613 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
614 | int width = XINT (w->total_cols); | |
615 | ||
616 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) | |
617 | /* Scroll bars occupy a few columns. */ | |
618 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); | |
619 | else if (!FRAME_WINDOW_P (f) | |
620 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
621 | /* The column of `|' characters separating side-by-side windows | |
622 | occupies one column only. */ | |
623 | width -= 1; | |
624 | ||
625 | if (FRAME_WINDOW_P (f)) | |
626 | /* On window-systems, fringes and display margins cannot be | |
627 | used for normal text. */ | |
628 | width -= (WINDOW_FRINGE_COLS (w) | |
629 | + WINDOW_LEFT_MARGIN_COLS (w) | |
630 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
631 | ||
632 | return width; | |
633 | } | |
634 | ||
105216ed CY |
635 | DEFUN ("window-body-height", Fwindow_body_height, Swindow_body_height, 0, 1, 0, |
636 | doc: /* Return the height, in lines, of WINDOW's text area. | |
637 | If WINDOW is omitted or nil, it defaults to the selected window. | |
638 | Signal an error if the window is not live. | |
89bd5ee1 | 639 | |
105216ed CY |
640 | The returned height does not include the mode line or header line. |
641 | On a graphical display, the height is expressed as an integer multiple | |
642 | of the default character height. If a line at the bottom of the text | |
643 | area is only partially visible, that counts as a whole line; to | |
644 | exclude partially-visible lines, use `window-text-height'. */) | |
645 | (Lisp_Object window) | |
abde8f8c | 646 | { |
105216ed CY |
647 | struct window *w = decode_window (window); |
648 | return make_number (window_body_lines (w)); | |
649 | } | |
abde8f8c | 650 | |
105216ed CY |
651 | DEFUN ("window-body-width", Fwindow_body_width, Swindow_body_width, 0, 1, 0, |
652 | doc: /* Return the width, in columns, of WINDOW's text area. | |
653 | If WINDOW is omitted or nil, it defaults to the selected window. | |
654 | Signal an error if the window is not live. | |
655 | ||
656 | The return value does not include any vertical dividers, fringe or | |
657 | marginal areas, or scroll bars. On a graphical display, the width is | |
658 | expressed as an integer multiple of the default character width. */) | |
659 | (Lisp_Object window) | |
660 | { | |
661 | struct window *w = decode_window (window); | |
662 | return make_number (window_body_cols (w)); | |
abde8f8c | 663 | } |
536833ab | 664 | |
7ab12479 | 665 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 | 666 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
496e208e | 667 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 668 | (Lisp_Object window) |
7ab12479 JB |
669 | { |
670 | return decode_window (window)->hscroll; | |
671 | } | |
672 | ||
673 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 | 674 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
0cf34688 | 675 | If WINDOW is nil, the selected window is used. |
a0a37a6f | 676 | Return NCOL. NCOL should be zero or positive. |
ebadb1e4 EZ |
677 | |
678 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 679 | window so that the location of point moves off-window. */) |
5842a27b | 680 | (Lisp_Object window, Lisp_Object ncol) |
7ab12479 | 681 | { |
ea68264b GM |
682 | struct window *w = decode_window (window); |
683 | int hscroll; | |
7ab12479 | 684 | |
b7826503 | 685 | CHECK_NUMBER (ncol); |
ea68264b | 686 | hscroll = max (0, XINT (ncol)); |
177c0ea7 | 687 | |
ea68264b GM |
688 | /* Prevent redisplay shortcuts when changing the hscroll. */ |
689 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 690 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
177c0ea7 | 691 | |
c67fa410 | 692 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
693 | return ncol; |
694 | } | |
695 | ||
190eb263 RS |
696 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
697 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 698 | doc: /* Return WINDOW's redisplay end trigger value. |
c85322d0 | 699 | WINDOW defaults to the selected window. |
fdb82f93 | 700 | See `set-window-redisplay-end-trigger' for more information. */) |
5842a27b | 701 | (Lisp_Object window) |
190eb263 RS |
702 | { |
703 | return decode_window (window)->redisplay_end_trigger; | |
704 | } | |
705 | ||
706 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
707 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
708 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
709 | VALUE should be a buffer position (typically a marker) or nil. | |
710 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
711 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
712 | with two arguments: WINDOW, and the end trigger value. | |
713 | Afterwards the end-trigger value is reset to nil. */) | |
5842a27b | 714 | (register Lisp_Object window, Lisp_Object value) |
190eb263 RS |
715 | { |
716 | register struct window *w; | |
717 | ||
718 | w = decode_window (window); | |
719 | w->redisplay_end_trigger = value; | |
720 | return value; | |
721 | } | |
722 | ||
7ab12479 | 723 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 | 724 | doc: /* Return a list of the edge coordinates of WINDOW. |
b35ac83e CY |
725 | The list has the form (LEFT TOP RIGHT BOTTOM). |
726 | TOP and BOTTOM count by lines, and LEFT and RIGHT count by columns, | |
727 | all relative to 0, 0 at top left corner of frame. | |
728 | ||
729 | RIGHT is one more than the rightmost column occupied by WINDOW. | |
730 | BOTTOM is one more than the bottommost row occupied by WINDOW. | |
731 | The edges include the space used by WINDOW's scroll bar, display | |
732 | margins, fringes, header line, and/or mode line. For the edges of | |
733 | just the text area, use `window-inside-edges'. */) | |
5842a27b | 734 | (Lisp_Object window) |
7ab12479 | 735 | { |
6b61353c | 736 | register struct window *w = decode_any_window (window); |
7ab12479 | 737 | |
949cf20f KS |
738 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
739 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), | |
740 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), | |
741 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), | |
742 | Qnil)))); | |
7ab12479 JB |
743 | } |
744 | ||
c99a9eb3 RS |
745 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
746 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
b35ac83e CY |
747 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at |
748 | the top left corner of the frame. | |
749 | ||
750 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
751 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
752 | The pixel edges include the space used by WINDOW's scroll bar, display | |
753 | margins, fringes, header line, and/or mode line. For the pixel edges | |
754 | of just the text area, use `window-inside-pixel-edges'. */) | |
5842a27b | 755 | (Lisp_Object window) |
c99a9eb3 | 756 | { |
6b61353c | 757 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
758 | |
759 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w)), | |
760 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w)), | |
761 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w)), | |
762 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w)), | |
763 | Qnil)))); | |
764 | } | |
765 | ||
9d5405ec | 766 | static void |
5e617bc2 | 767 | calc_absolute_offset (struct window *w, int *add_x, int *add_y) |
9d5405ec J |
768 | { |
769 | struct frame *f = XFRAME (w->frame); | |
770 | *add_y = f->top_pos; | |
771 | #ifdef FRAME_MENUBAR_HEIGHT | |
772 | *add_y += FRAME_MENUBAR_HEIGHT (f); | |
773 | #endif | |
bfeabdc3 JD |
774 | #ifdef FRAME_TOOLBAR_TOP_HEIGHT |
775 | *add_y += FRAME_TOOLBAR_TOP_HEIGHT (f); | |
776 | #elif FRAME_TOOLBAR_HEIGHT | |
9d5405ec J |
777 | *add_y += FRAME_TOOLBAR_HEIGHT (f); |
778 | #endif | |
779 | #ifdef FRAME_NS_TITLEBAR_HEIGHT | |
780 | *add_y += FRAME_NS_TITLEBAR_HEIGHT (f); | |
781 | #endif | |
782 | *add_x = f->left_pos; | |
bfeabdc3 JD |
783 | #ifdef FRAME_TOOLBAR_LEFT_WIDTH |
784 | *add_x += FRAME_TOOLBAR_LEFT_WIDTH (f); | |
785 | #endif | |
9d5405ec J |
786 | } |
787 | ||
788 | DEFUN ("window-absolute-pixel-edges", Fwindow_absolute_pixel_edges, | |
789 | Swindow_absolute_pixel_edges, 0, 1, 0, | |
790 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
791 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at | |
792 | the top left corner of the display. | |
793 | ||
794 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
795 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
796 | The pixel edges include the space used by WINDOW's scroll bar, display | |
797 | margins, fringes, header line, and/or mode line. For the pixel edges | |
c49d071a | 798 | of just the text area, use `window-inside-absolute-pixel-edges'. */) |
5842a27b | 799 | (Lisp_Object window) |
9d5405ec J |
800 | { |
801 | register struct window *w = decode_any_window (window); | |
802 | int add_x, add_y; | |
ed3751c8 | 803 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec J |
804 | |
805 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w) + add_x), | |
806 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w) + add_y), | |
807 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w) + add_x), | |
808 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w) + add_y), | |
809 | Qnil)))); | |
810 | } | |
811 | ||
c99a9eb3 RS |
812 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, |
813 | doc: /* Return a list of the edge coordinates of WINDOW. | |
b35ac83e CY |
814 | The list has the form (LEFT TOP RIGHT BOTTOM). |
815 | TOP and BOTTOM count by lines, and LEFT and RIGHT count by columns, | |
816 | all relative to 0, 0 at top left corner of frame. | |
817 | ||
818 | RIGHT is one more than the rightmost column of WINDOW's text area. | |
819 | BOTTOM is one more than the bottommost row of WINDOW's text area. | |
820 | The inside edges do not include the space used by the WINDOW's scroll | |
821 | bar, display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 822 | (Lisp_Object window) |
c99a9eb3 | 823 | { |
2fbdc249 | 824 | register struct window *w = decode_window (window); |
c99a9eb3 RS |
825 | |
826 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w) | |
827 | + WINDOW_LEFT_MARGIN_COLS (w) | |
828 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
829 | make_number (WINDOW_TOP_EDGE_LINE (w) | |
830 | + WINDOW_HEADER_LINE_LINES (w)), | |
f3fbdb1f | 831 | make_number (WINDOW_BOX_RIGHT_EDGE_COL (w) |
c99a9eb3 RS |
832 | - WINDOW_RIGHT_MARGIN_COLS (w) |
833 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
834 | make_number (WINDOW_BOTTOM_EDGE_LINE (w) | |
835 | - WINDOW_MODE_LINE_LINES (w))); | |
836 | } | |
837 | ||
838 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
2fbdc249 CY |
839 | doc: /* Return a list of the edge pixel coordinates of WINDOW's text area. |
840 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to (0,0) | |
841 | at the top left corner of the frame's window area. | |
b35ac83e CY |
842 | |
843 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
844 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
845 | The inside edges do not include the space used by WINDOW's scroll bar, | |
c99a9eb3 | 846 | display margins, fringes, header line, and/or mode line. */) |
5842a27b | 847 | (Lisp_Object window) |
c99a9eb3 | 848 | { |
2fbdc249 | 849 | register struct window *w = decode_window (window); |
c99a9eb3 RS |
850 | |
851 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
852 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
853 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
854 | make_number (WINDOW_TOP_EDGE_Y (w) | |
855 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
f3fbdb1f | 856 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) |
c99a9eb3 RS |
857 | - WINDOW_RIGHT_MARGIN_WIDTH (w) |
858 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
859 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
860 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
861 | } | |
862 | ||
9d5405ec J |
863 | DEFUN ("window-inside-absolute-pixel-edges", |
864 | Fwindow_inside_absolute_pixel_edges, | |
865 | Swindow_inside_absolute_pixel_edges, 0, 1, 0, | |
2fbdc249 CY |
866 | doc: /* Return a list of the edge pixel coordinates of WINDOW's text area. |
867 | The list has the form (LEFT TOP RIGHT BOTTOM), all relative to (0,0) | |
868 | at the top left corner of the frame's window area. | |
9d5405ec J |
869 | |
870 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
871 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
872 | The inside edges do not include the space used by WINDOW's scroll bar, | |
873 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 874 | (Lisp_Object window) |
9d5405ec | 875 | { |
2fbdc249 | 876 | register struct window *w = decode_window (window); |
9d5405ec | 877 | int add_x, add_y; |
ed3751c8 | 878 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec J |
879 | |
880 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
881 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
882 | + WINDOW_LEFT_FRINGE_WIDTH (w) + add_x), | |
883 | make_number (WINDOW_TOP_EDGE_Y (w) | |
884 | + WINDOW_HEADER_LINE_HEIGHT (w) + add_y), | |
885 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) | |
886 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
887 | - WINDOW_RIGHT_FRINGE_WIDTH (w) + add_x), | |
888 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
889 | - WINDOW_MODE_LINE_HEIGHT (w) + add_y)); | |
890 | } | |
891 | ||
9173a8fb | 892 | /* Test if the character at column X, row Y is within window W. |
341f3858 | 893 | If it is not, return ON_NOTHING; |
9173a8fb | 894 | if it is in the window's text area, return ON_TEXT; |
341f3858 | 895 | if it is on the window's modeline, return ON_MODE_LINE; |
d5783c40 | 896 | if it is on the border between the window and its right sibling, |
341f3858 | 897 | return ON_VERTICAL_BORDER. |
9173a8fb | 898 | if it is on a scroll bar, return ON_SCROLL_BAR. |
341f3858 | 899 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 900 | if it is in left or right fringe of the window, |
9173a8fb | 901 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE; |
49b996e7 | 902 | if it is in the marginal area to the left/right of the window, |
9173a8fb | 903 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN. |
5500c422 GM |
904 | |
905 | X and Y are frame relative pixel coordinates. */ | |
906 | ||
7442878f | 907 | static enum window_part |
9173a8fb | 908 | coordinates_in_window (register struct window *w, int x, int y) |
d5783c40 | 909 | { |
b0228ace | 910 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
7442878f | 911 | enum window_part part; |
949cf20f | 912 | int ux = FRAME_COLUMN_WIDTH (f); |
c7b08b0d MR |
913 | int left_x = WINDOW_LEFT_EDGE_X (w); |
914 | int right_x = WINDOW_RIGHT_EDGE_X (w); | |
915 | int top_y = WINDOW_TOP_EDGE_Y (w); | |
916 | int bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
dad75588 GM |
917 | /* The width of the area where the vertical line can be dragged. |
918 | (Between mode lines for instance. */ | |
919 | int grabbable_width = ux; | |
949cf20f | 920 | int lmargin_width, rmargin_width, text_left, text_right; |
9173a8fb | 921 | |
c7b08b0d MR |
922 | /* Outside any interesting row or column? */ |
923 | if (y < top_y || y >= bottom_y || x < left_x || x >= right_x) | |
9173a8fb | 924 | return ON_NOTHING; |
b0228ace | 925 | |
c7b08b0d MR |
926 | /* On the mode line or header line? */ |
927 | if ((WINDOW_WANTS_MODELINE_P (w) | |
928 | && y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w) | |
929 | && (part = ON_MODE_LINE)) | |
930 | || (WINDOW_WANTS_HEADER_LINE_P (w) | |
931 | && y < top_y + CURRENT_HEADER_LINE_HEIGHT (w) | |
932 | && (part = ON_HEADER_LINE))) | |
933 | { | |
934 | /* If it's under/over the scroll bar portion of the mode/header | |
935 | line, say it's on the vertical line. That's to be able to | |
936 | resize windows horizontally in case we're using toolkit scroll | |
937 | bars. Note: If scrollbars are on the left, the window that | |
938 | must be eventually resized is that on the left of WINDOW. */ | |
939 | if ((WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) | |
940 | && !WINDOW_LEFTMOST_P (w) | |
941 | && eabs (x - left_x) < grabbable_width) | |
942 | || (!WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) | |
943 | && !WINDOW_RIGHTMOST_P (w) | |
944 | && eabs (x - right_x) < grabbable_width)) | |
945 | return ON_VERTICAL_BORDER; | |
946 | else | |
947 | return part; | |
948 | } | |
949 | ||
466539bc EZ |
950 | /* In what's below, we subtract 1 when computing right_x because we |
951 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
952 | if (w->pseudo_window_p) |
953 | { | |
954 | left_x = 0; | |
949cf20f | 955 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
5500c422 GM |
956 | } |
957 | else | |
958 | { | |
949cf20f KS |
959 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
960 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
5500c422 | 961 | } |
37962e60 | 962 | |
949cf20f | 963 | /* Outside any interesting column? */ |
9173a8fb CY |
964 | if (x < left_x || x > right_x) |
965 | return ON_SCROLL_BAR; | |
949cf20f KS |
966 | |
967 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
968 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 969 | |
949cf20f KS |
970 | text_left = window_box_left (w, TEXT_AREA); |
971 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
972 | ||
973 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 974 | { |
447e9da0 | 975 | if (!w->pseudo_window_p |
949cf20f | 976 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 977 | && !WINDOW_RIGHTMOST_P (w) |
9173a8fb CY |
978 | && (eabs (x - right_x) < grabbable_width)) |
979 | return ON_VERTICAL_BORDER; | |
fbad6f9a | 980 | } |
9173a8fb CY |
981 | /* Need to say "x > right_x" rather than >=, since on character |
982 | terminals, the vertical line's x coordinate is right_x. */ | |
983 | else if (!w->pseudo_window_p | |
984 | && !WINDOW_RIGHTMOST_P (w) | |
985 | && x > right_x - ux) | |
986 | return ON_VERTICAL_BORDER; | |
987 | ||
988 | if (x < text_left) | |
949cf20f KS |
989 | { |
990 | if (lmargin_width > 0 | |
991 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
992 | ? (x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) |
993 | : (x < left_x + lmargin_width))) | |
994 | return ON_LEFT_MARGIN; | |
995 | ||
949cf20f KS |
996 | return ON_LEFT_FRINGE; |
997 | } | |
998 | ||
9173a8fb | 999 | if (x >= text_right) |
949cf20f KS |
1000 | { |
1001 | if (rmargin_width > 0 | |
1002 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1003 | ? (x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) |
1004 | : (x >= right_x - rmargin_width))) | |
1005 | return ON_RIGHT_MARGIN; | |
1006 | ||
949cf20f KS |
1007 | return ON_RIGHT_FRINGE; |
1008 | } | |
1009 | ||
1010 | /* Everything special ruled out - must be on text area */ | |
949cf20f | 1011 | return ON_TEXT; |
d5783c40 JB |
1012 | } |
1013 | ||
9173a8fb CY |
1014 | /* Take X is the frame-relative pixel x-coordinate, and return the |
1015 | x-coordinate relative to part PART of window W. */ | |
1016 | int | |
1017 | window_relative_x_coord (struct window *w, enum window_part part, int x) | |
1018 | { | |
1019 | int left_x = (w->pseudo_window_p) ? 0 : WINDOW_BOX_LEFT_EDGE_X (w); | |
1020 | ||
1021 | switch (part) | |
1022 | { | |
1023 | case ON_TEXT: | |
1024 | return x - window_box_left (w, TEXT_AREA); | |
1025 | ||
1026 | case ON_LEFT_FRINGE: | |
1027 | return x - left_x; | |
1028 | ||
1029 | case ON_RIGHT_FRINGE: | |
1030 | return x - left_x - WINDOW_LEFT_FRINGE_WIDTH (w); | |
1031 | ||
1032 | case ON_LEFT_MARGIN: | |
1033 | return (x - left_x | |
1034 | - ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1035 | ? WINDOW_LEFT_FRINGE_WIDTH (w) : 0)); | |
1036 | ||
1037 | case ON_RIGHT_MARGIN: | |
1038 | return (x + 1 | |
1039 | - ((w->pseudo_window_p) | |
1040 | ? WINDOW_TOTAL_WIDTH (w) | |
1041 | : WINDOW_BOX_RIGHT_EDGE_X (w)) | |
1042 | + window_box_width (w, RIGHT_MARGIN_AREA) | |
1043 | + ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1044 | ? WINDOW_RIGHT_FRINGE_WIDTH (w) : 0)); | |
1045 | } | |
1046 | ||
1047 | /* ON_SCROLL_BAR, ON_NOTHING, and ON_VERTICAL_BORDER: */ | |
1048 | return 0; | |
1049 | } | |
1050 | ||
b0228ace | 1051 | |
d5783c40 | 1052 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
1053 | Scoordinates_in_window_p, 2, 2, 0, |
1054 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
1055 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
1056 | measured in characters from the upper-left corner of the frame. | |
23fe745a | 1057 | \(0 . 0) denotes the character in the upper left corner of the |
fdb82f93 PJ |
1058 | frame. |
1059 | If COORDINATES are in the text portion of WINDOW, | |
1060 | the coordinates relative to the window are returned. | |
1061 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
1062 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
1063 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
1064 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 1065 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
1066 | `vertical-line' is returned. |
1067 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
1068 | or `right-margin' is returned. */) | |
5842a27b | 1069 | (register Lisp_Object coordinates, Lisp_Object window) |
d5783c40 | 1070 | { |
5500c422 GM |
1071 | struct window *w; |
1072 | struct frame *f; | |
d5783c40 | 1073 | int x, y; |
5500c422 | 1074 | Lisp_Object lx, ly; |
d5783c40 | 1075 | |
6b61353c | 1076 | CHECK_WINDOW (window); |
5500c422 GM |
1077 | w = XWINDOW (window); |
1078 | f = XFRAME (w->frame); | |
b7826503 | 1079 | CHECK_CONS (coordinates); |
5500c422 GM |
1080 | lx = Fcar (coordinates); |
1081 | ly = Fcdr (coordinates); | |
b7826503 PJ |
1082 | CHECK_NUMBER_OR_FLOAT (lx); |
1083 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
1084 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
1085 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 | 1086 | |
9173a8fb | 1087 | switch (coordinates_in_window (w, x, y)) |
d5783c40 | 1088 | { |
7442878f | 1089 | case ON_NOTHING: |
d5783c40 JB |
1090 | return Qnil; |
1091 | ||
7442878f | 1092 | case ON_TEXT: |
9173a8fb CY |
1093 | /* Convert X and Y to window relative pixel coordinates, and |
1094 | return the canonical char units. */ | |
1095 | x -= window_box_left (w, TEXT_AREA); | |
1096 | y -= WINDOW_TOP_EDGE_Y (w); | |
949cf20f KS |
1097 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
1098 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 1099 | |
7442878f | 1100 | case ON_MODE_LINE: |
d5783c40 | 1101 | return Qmode_line; |
37962e60 | 1102 | |
7442878f | 1103 | case ON_VERTICAL_BORDER: |
e5d77022 | 1104 | return Qvertical_line; |
d5783c40 | 1105 | |
7442878f | 1106 | case ON_HEADER_LINE: |
045dee35 | 1107 | return Qheader_line; |
5500c422 | 1108 | |
7442878f GM |
1109 | case ON_LEFT_FRINGE: |
1110 | return Qleft_fringe; | |
177c0ea7 | 1111 | |
7442878f GM |
1112 | case ON_RIGHT_FRINGE: |
1113 | return Qright_fringe; | |
fbad6f9a | 1114 | |
49b996e7 GM |
1115 | case ON_LEFT_MARGIN: |
1116 | return Qleft_margin; | |
177c0ea7 | 1117 | |
49b996e7 GM |
1118 | case ON_RIGHT_MARGIN: |
1119 | return Qright_margin; | |
1120 | ||
6487f669 RS |
1121 | case ON_SCROLL_BAR: |
1122 | /* Historically we are supposed to return nil in this case. */ | |
1123 | return Qnil; | |
1124 | ||
d5783c40 JB |
1125 | default: |
1126 | abort (); | |
1127 | } | |
1128 | } | |
1129 | ||
67492200 GM |
1130 | |
1131 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
1132 | Check if window W contains coordinates specified by USER_DATA which |
1133 | is actually a pointer to a struct check_window_data CW. | |
1134 | ||
1135 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
1136 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 1137 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
1138 | zero from this function to stop iterating over windows. */ |
1139 | ||
1140 | struct check_window_data | |
1141 | { | |
1142 | Lisp_Object *window; | |
9173a8fb | 1143 | int x, y; |
341f3858 | 1144 | enum window_part *part; |
f95464e4 | 1145 | }; |
67492200 GM |
1146 | |
1147 | static int | |
971de7fb | 1148 | check_window_containing (struct window *w, void *user_data) |
67492200 | 1149 | { |
f95464e4 | 1150 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
1151 | enum window_part found; |
1152 | int continue_p = 1; | |
67492200 | 1153 | |
f95464e4 | 1154 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1155 | if (found != ON_NOTHING) |
67492200 | 1156 | { |
341f3858 | 1157 | *cw->part = found; |
f95464e4 | 1158 | XSETWINDOW (*cw->window, w); |
7442878f | 1159 | continue_p = 0; |
67492200 | 1160 | } |
177c0ea7 | 1161 | |
7442878f | 1162 | return continue_p; |
67492200 GM |
1163 | } |
1164 | ||
1165 | ||
5500c422 | 1166 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1167 | return it as a Lisp_Object. |
1168 | ||
1169 | If X, Y is on one of the window's special `window_part' elements, | |
9173a8fb | 1170 | set *PART to the id of that element. |
949cf20f | 1171 | |
341f3858 | 1172 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1173 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1174 | ||
1175 | This function was previously implemented with a loop cycling over | |
1176 | windows with Fnext_window, and starting with the frame's selected | |
1177 | window. It turned out that this doesn't work with an | |
1178 | implementation of next_window using Vwindow_list, because | |
1179 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1180 | tree of F when this function is called asynchronously from | |
1181 | note_mouse_highlight. The original loop didn't terminate in this | |
1182 | case. */ | |
5500c422 | 1183 | |
7ab12479 | 1184 | Lisp_Object |
9173a8fb CY |
1185 | window_from_coordinates (struct frame *f, int x, int y, |
1186 | enum window_part *part, int tool_bar_p) | |
7ab12479 | 1187 | { |
67492200 | 1188 | Lisp_Object window; |
f95464e4 | 1189 | struct check_window_data cw; |
341f3858 KS |
1190 | enum window_part dummy; |
1191 | ||
1192 | if (part == 0) | |
1193 | part = &dummy; | |
5500c422 | 1194 | |
67492200 | 1195 | window = Qnil; |
9173a8fb | 1196 | cw.window = &window, cw.x = x, cw.y = y; cw.part = part; |
f95464e4 | 1197 | foreach_window (f, check_window_containing, &cw); |
177c0ea7 | 1198 | |
67492200 GM |
1199 | /* If not found above, see if it's in the tool bar window, if a tool |
1200 | bar exists. */ | |
1201 | if (NILP (window) | |
1202 | && tool_bar_p | |
1203 | && WINDOWP (f->tool_bar_window) | |
949cf20f | 1204 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 |
9173a8fb | 1205 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), x, y) |
7442878f | 1206 | != ON_NOTHING)) |
5500c422 | 1207 | { |
341f3858 | 1208 | *part = ON_TEXT; |
67492200 | 1209 | window = f->tool_bar_window; |
5500c422 | 1210 | } |
37962e60 | 1211 | |
67492200 | 1212 | return window; |
7ab12479 JB |
1213 | } |
1214 | ||
ab17c3f2 | 1215 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 | 1216 | doc: /* Return window containing coordinates X and Y on FRAME. |
496e208e | 1217 | FRAME must be a live frame and defaults to the selected one. |
fdb82f93 PJ |
1218 | The top left corner of the frame is considered to be row 0, |
1219 | column 0. */) | |
5842a27b | 1220 | (Lisp_Object x, Lisp_Object y, Lisp_Object frame) |
7ab12479 | 1221 | { |
5500c422 | 1222 | struct frame *f; |
7ab12479 | 1223 | |
44fa5b1e | 1224 | if (NILP (frame)) |
1ae1a37d | 1225 | frame = selected_frame; |
b7826503 | 1226 | CHECK_LIVE_FRAME (frame); |
5500c422 | 1227 | f = XFRAME (frame); |
7ab12479 | 1228 | |
5500c422 | 1229 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1230 | CHECK_NUMBER_OR_FLOAT (x); |
1231 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1232 | |
177c0ea7 | 1233 | return window_from_coordinates (f, |
2c77cf3b RS |
1234 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1235 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1236 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1237 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
9173a8fb | 1238 | 0, 0); |
7ab12479 JB |
1239 | } |
1240 | ||
1241 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1242 | doc: /* Return current value of point in WINDOW. |
496e208e | 1243 | WINDOW must be a live window and defaults to the selected one. |
c85322d0 | 1244 | |
fdb82f93 PJ |
1245 | For a nonselected window, this is the value point would have |
1246 | if that window were selected. | |
1247 | ||
1248 | Note that, when WINDOW is the selected window and its buffer | |
1249 | is also currently selected, the value returned is the same as (point). | |
1250 | It would be more strictly correct to return the `top-level' value | |
1251 | of point, outside of any save-excursion forms. | |
1252 | But that is hard to define. */) | |
5842a27b | 1253 | (Lisp_Object window) |
7ab12479 JB |
1254 | { |
1255 | register struct window *w = decode_window (window); | |
1256 | ||
1257 | if (w == XWINDOW (selected_window) | |
1258 | && current_buffer == XBUFFER (w->buffer)) | |
1259 | return Fpoint (); | |
1260 | return Fmarker_position (w->pointm); | |
1261 | } | |
1262 | ||
1263 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1264 | doc: /* Return position at which display currently starts in WINDOW. |
496e208e | 1265 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 1266 | This is updated by redisplay or by calling `set-window-start'. */) |
5842a27b | 1267 | (Lisp_Object window) |
7ab12479 JB |
1268 | { |
1269 | return Fmarker_position (decode_window (window)->start); | |
1270 | } | |
1271 | ||
8646118f RS |
1272 | /* This is text temporarily removed from the doc string below. |
1273 | ||
fdb82f93 PJ |
1274 | This function returns nil if the position is not currently known. |
1275 | That happens when redisplay is preempted and doesn't finish. | |
1276 | If in that case you want to compute where the end of the window would | |
1277 | have been if redisplay had finished, do this: | |
1278 | (save-excursion | |
1279 | (goto-char (window-start window)) | |
1280 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1281 | (point))") */ |
1282 | ||
478292ed | 1283 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1284 | doc: /* Return position at which display currently ends in WINDOW. |
496e208e | 1285 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1286 | This is updated by redisplay, when it runs to completion. |
1287 | Simply changing the buffer text or setting `window-start' | |
1288 | does not update this value. | |
87e68db4 | 1289 | Return nil if there is no recorded value. (This can happen if the |
a0a37a6f | 1290 | last redisplay of WINDOW was preempted, and did not finish.) |
fdb82f93 PJ |
1291 | If UPDATE is non-nil, compute the up-to-date position |
1292 | if it isn't already recorded. */) | |
5842a27b | 1293 | (Lisp_Object window, Lisp_Object update) |
7ab12479 JB |
1294 | { |
1295 | Lisp_Object value; | |
1296 | struct window *w = decode_window (window); | |
5a41ab94 | 1297 | Lisp_Object buf; |
31790df3 | 1298 | struct buffer *b; |
5a41ab94 RS |
1299 | |
1300 | buf = w->buffer; | |
b7826503 | 1301 | CHECK_BUFFER (buf); |
b3a10345 | 1302 | b = XBUFFER (buf); |
5a41ab94 | 1303 | |
8646118f | 1304 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1305 | /* If we don't know the end position, return nil. |
1306 | The user can compute it with vertical-motion if he wants to. | |
1307 | It would be nicer to do it automatically, | |
1308 | but that's so slow that it would probably bother people. */ | |
1309 | if (NILP (w->window_end_valid)) | |
1310 | return Qnil; | |
8646118f | 1311 | #endif |
7250968e | 1312 | |
478292ed RS |
1313 | if (! NILP (update) |
1314 | && ! (! NILP (w->window_end_valid) | |
dfc265a3 | 1315 | && XFASTINT (w->last_modified) >= BUF_MODIFF (b) |
4c9564e8 | 1316 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (b)) |
41791a20 | 1317 | && !noninteractive) |
478292ed | 1318 | { |
cbc099e5 GM |
1319 | struct text_pos startp; |
1320 | struct it it; | |
b3a10345 | 1321 | struct buffer *old_buffer = NULL; |
57b3e30b | 1322 | void *itdata = NULL; |
b3a10345 KS |
1323 | |
1324 | /* Cannot use Fvertical_motion because that function doesn't | |
1325 | cope with variable-height lines. */ | |
1326 | if (b != current_buffer) | |
1327 | { | |
1328 | old_buffer = current_buffer; | |
1329 | set_buffer_internal (b); | |
1330 | } | |
2d6d9df0 GM |
1331 | |
1332 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1333 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1334 | `-l' containing a call to `rmail' with subsequent other |
1335 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1336 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 1337 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 1338 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 1339 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 1340 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1341 | else |
cbc099e5 GM |
1342 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
1343 | ||
57b3e30b | 1344 | itdata = bidi_shelve_cache (); |
cbc099e5 GM |
1345 | start_display (&it, w, startp); |
1346 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1347 | if (it.current_y < it.last_visible_y) |
1348 | move_it_past_eol (&it); | |
cbc099e5 | 1349 | value = make_number (IT_CHARPOS (it)); |
35928349 | 1350 | bidi_unshelve_cache (itdata, 0); |
177c0ea7 | 1351 | |
99593a9d GM |
1352 | if (old_buffer) |
1353 | set_buffer_internal (old_buffer); | |
478292ed RS |
1354 | } |
1355 | else | |
b3a10345 | 1356 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1357 | |
1358 | return value; | |
1359 | } | |
1360 | ||
a7ca3326 | 1361 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, |
a0a37a6f LT |
1362 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
1363 | Return POS. */) | |
5842a27b | 1364 | (Lisp_Object window, Lisp_Object pos) |
7ab12479 JB |
1365 | { |
1366 | register struct window *w = decode_window (window); | |
1367 | ||
b7826503 | 1368 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
1369 | if (w == XWINDOW (selected_window) |
1370 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
1371 | Fgoto_char (pos); |
1372 | else | |
1373 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 1374 | |
0685cb3c GM |
1375 | /* We have to make sure that redisplay updates the window to show |
1376 | the new value of point. */ | |
1377 | if (!EQ (window, selected_window)) | |
799417bd | 1378 | ++windows_or_buffers_changed; |
177c0ea7 | 1379 | |
7ab12479 JB |
1380 | return pos; |
1381 | } | |
1382 | ||
1383 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1384 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
0cf34688 | 1385 | If WINDOW is nil, the selected window is used. Return POS. |
d653c8cc MR |
1386 | Optional third arg NOFORCE non-nil inhibits next redisplay from |
1387 | overriding motion of point in order to display at this exact start. */) | |
5842a27b | 1388 | (Lisp_Object window, Lisp_Object pos, Lisp_Object noforce) |
7ab12479 JB |
1389 | { |
1390 | register struct window *w = decode_window (window); | |
1391 | ||
b7826503 | 1392 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
1393 | set_marker_restricted (w->start, pos, w->buffer); |
1394 | /* this is not right, but much easier than doing what is right. */ | |
1395 | w->start_at_line_beg = Qnil; | |
265a9e55 | 1396 | if (NILP (noforce)) |
7ab12479 JB |
1397 | w->force_start = Qt; |
1398 | w->update_mode_line = Qt; | |
d834a2e9 | 1399 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1400 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
1401 | if (!EQ (window, selected_window)) |
1402 | windows_or_buffers_changed++; | |
ce7fae7d | 1403 | |
7ab12479 JB |
1404 | return pos; |
1405 | } | |
1406 | ||
496e208e MR |
1407 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
1408 | Spos_visible_in_window_p, 0, 3, 0, | |
1409 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. | |
1410 | Return nil if that position is scrolled vertically out of view. | |
1411 | If a character is only partially visible, nil is returned, unless the | |
1412 | optional argument PARTIALLY is non-nil. | |
1413 | If POS is only out of view because of horizontal scrolling, return non-nil. | |
1414 | If POS is t, it specifies the position of the last visible glyph in WINDOW. | |
1415 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. | |
1416 | ||
1417 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
1418 | return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), | |
1419 | where X and Y are the pixel coordinates relative to the top left corner | |
1420 | of the window. The remaining elements are omitted if the character after | |
1421 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
1422 | off-window at the top and bottom of the row, ROWH is the height of the | |
1423 | display row, and VPOS is the row number (0-based) containing POS. */) | |
1424 | (Lisp_Object pos, Lisp_Object window, Lisp_Object partially) | |
1425 | { | |
1426 | register struct window *w; | |
1427 | register EMACS_INT posint; | |
1428 | register struct buffer *buf; | |
1429 | struct text_pos top; | |
1430 | Lisp_Object in_window = Qnil; | |
1431 | int rtop, rbot, rowh, vpos, fully_p = 1; | |
1432 | int x, y; | |
1433 | ||
1434 | w = decode_window (window); | |
1435 | buf = XBUFFER (w->buffer); | |
1436 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
1437 | ||
1438 | if (EQ (pos, Qt)) | |
1439 | posint = -1; | |
1440 | else if (!NILP (pos)) | |
1441 | { | |
1442 | CHECK_NUMBER_COERCE_MARKER (pos); | |
1443 | posint = XINT (pos); | |
1444 | } | |
1445 | else if (w == XWINDOW (selected_window)) | |
1446 | posint = PT; | |
1447 | else | |
1448 | posint = XMARKER (w->pointm)->charpos; | |
1449 | ||
1450 | /* If position is above window start or outside buffer boundaries, | |
1451 | or if window start is out of range, position is not visible. */ | |
1452 | if ((EQ (pos, Qt) | |
1453 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
1454 | && CHARPOS (top) >= BUF_BEGV (buf) | |
1455 | && CHARPOS (top) <= BUF_ZV (buf) | |
1456 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) | |
1457 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) | |
1458 | in_window = Qt; | |
1459 | ||
1460 | if (!NILP (in_window) && !NILP (partially)) | |
1461 | { | |
1462 | Lisp_Object part = Qnil; | |
1463 | if (!fully_p) | |
1464 | part = list4 (make_number (rtop), make_number (rbot), | |
1465 | make_number (rowh), make_number (vpos)); | |
1466 | in_window = Fcons (make_number (x), | |
1467 | Fcons (make_number (y), part)); | |
1468 | } | |
1469 | ||
1470 | return in_window; | |
1471 | } | |
1472 | ||
1473 | DEFUN ("window-line-height", Fwindow_line_height, | |
1474 | Swindow_line_height, 0, 2, 0, | |
1475 | doc: /* Return height in pixels of text line LINE in window WINDOW. | |
1476 | WINDOW defaults to the selected window. | |
1477 | ||
1478 | Return height of current line if LINE is omitted or nil. Return height of | |
1479 | header or mode line if LINE is `header-line' or `mode-line'. | |
1480 | Otherwise, LINE is a text line number starting from 0. A negative number | |
1481 | counts from the end of the window. | |
1482 | ||
1483 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height | |
1484 | in pixels of the visible part of the line, VPOS and YPOS are the | |
1485 | vertical position in lines and pixels of the line, relative to the top | |
1486 | of the first text line, and OFFBOT is the number of off-window pixels at | |
1487 | the bottom of the text line. If there are off-window pixels at the top | |
1488 | of the (first) text line, YPOS is negative. | |
1489 | ||
1490 | Return nil if window display is not up-to-date. In that case, use | |
1491 | `pos-visible-in-window-p' to obtain the information. */) | |
1492 | (Lisp_Object line, Lisp_Object window) | |
1493 | { | |
1494 | register struct window *w; | |
1495 | register struct buffer *b; | |
1496 | struct glyph_row *row, *end_row; | |
1497 | int max_y, crop, i, n; | |
1498 | ||
1499 | w = decode_window (window); | |
1500 | ||
1501 | if (noninteractive || w->pseudo_window_p) | |
1502 | return Qnil; | |
1503 | ||
1504 | CHECK_BUFFER (w->buffer); | |
1505 | b = XBUFFER (w->buffer); | |
1506 | ||
1507 | /* Fail if current matrix is not up-to-date. */ | |
1508 | if (NILP (w->window_end_valid) | |
1509 | || current_buffer->clip_changed | |
1510 | || current_buffer->prevent_redisplay_optimizations_p | |
1511 | || XFASTINT (w->last_modified) < BUF_MODIFF (b) | |
1512 | || XFASTINT (w->last_overlay_modified) < BUF_OVERLAY_MODIFF (b)) | |
1513 | return Qnil; | |
1514 | ||
1515 | if (NILP (line)) | |
1516 | { | |
1517 | i = w->cursor.vpos; | |
1518 | if (i < 0 || i >= w->current_matrix->nrows | |
1519 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
1520 | return Qnil; | |
1521 | max_y = window_text_bottom_y (w); | |
1522 | goto found_row; | |
1523 | } | |
1524 | ||
1525 | if (EQ (line, Qheader_line)) | |
1526 | { | |
1527 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) | |
1528 | return Qnil; | |
1529 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
1530 | if (!row->enabled_p) | |
1531 | return Qnil; | |
1532 | return list4 (make_number (row->height), | |
1533 | make_number (0), make_number (0), | |
1534 | make_number (0)); | |
1535 | } | |
1536 | ||
1537 | if (EQ (line, Qmode_line)) | |
1538 | { | |
1539 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); | |
1540 | if (!row->enabled_p) | |
1541 | return Qnil; | |
1542 | return list4 (make_number (row->height), | |
1543 | make_number (0), /* not accurate */ | |
1544 | make_number (WINDOW_HEADER_LINE_HEIGHT (w) | |
1545 | + window_text_bottom_y (w)), | |
1546 | make_number (0)); | |
1547 | } | |
1548 | ||
1549 | CHECK_NUMBER (line); | |
1550 | n = XINT (line); | |
1551 | ||
1552 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
1553 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
1554 | max_y = window_text_bottom_y (w); | |
1555 | i = 0; | |
1556 | ||
1557 | while ((n < 0 || i < n) | |
1558 | && row <= end_row && row->enabled_p | |
1559 | && row->y + row->height < max_y) | |
1560 | row++, i++; | |
1561 | ||
1562 | if (row > end_row || !row->enabled_p) | |
1563 | return Qnil; | |
1564 | ||
1565 | if (++n < 0) | |
1566 | { | |
1567 | if (-n > i) | |
1568 | return Qnil; | |
1569 | row += n; | |
1570 | i += n; | |
1571 | } | |
1572 | ||
1573 | found_row: | |
1574 | crop = max (0, (row->y + row->height) - max_y); | |
1575 | return list4 (make_number (row->height + min (0, row->y) - crop), | |
1576 | make_number (i), | |
1577 | make_number (row->y), | |
1578 | make_number (crop)); | |
1579 | } | |
d653c8cc | 1580 | |
a7ca3326 | 1581 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, |
d653c8cc MR |
1582 | 0, 1, 0, |
1583 | doc: /* Return non-nil when WINDOW is dedicated to its buffer. | |
12bb3111 | 1584 | More precisely, return the value assigned by the last call of |
7bfac547 MR |
1585 | `set-window-dedicated-p' for WINDOW. Return nil if that function was |
1586 | never called with WINDOW as its argument, or the value set by that | |
1587 | function was internally reset since its last call. WINDOW defaults to | |
1588 | the selected window. | |
1589 | ||
1590 | When a window is dedicated to its buffer, `display-buffer' will refrain | |
1591 | from displaying another buffer in it. `get-lru-window' and | |
1592 | `get-largest-window' treat dedicated windows specially. | |
1593 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1594 | `kill-buffer' can delete a dedicated window and the containing frame. | |
1595 | ||
1596 | Functions like `set-window-buffer' may change the buffer displayed by a | |
1597 | window, unless that window is "strongly" dedicated to its buffer, that | |
1598 | is the value returned by `window-dedicated-p' is t. */) | |
5842a27b | 1599 | (Lisp_Object window) |
7ab12479 JB |
1600 | { |
1601 | return decode_window (window)->dedicated; | |
1602 | } | |
1603 | ||
d207b766 RS |
1604 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1605 | Sset_window_dedicated_p, 2, 2, 0, | |
d653c8cc | 1606 | doc: /* Mark WINDOW as dedicated according to FLAG. |
496e208e MR |
1607 | WINDOW must be a live window and defaults to the selected one. FLAG |
1608 | non-nil means mark WINDOW as dedicated to its buffer. FLAG nil means | |
1609 | mark WINDOW as non-dedicated. Return FLAG. | |
d653c8cc | 1610 | |
7bfac547 MR |
1611 | When a window is dedicated to its buffer, `display-buffer' will refrain |
1612 | from displaying another buffer in it. `get-lru-window' and | |
1613 | `get-largest-window' treat dedicated windows specially. | |
496e208e MR |
1614 | `delete-windows-on', `replace-buffer-in-windows', `quit-window', |
1615 | `quit-restore-window' and `kill-buffer' can delete a dedicated window | |
1616 | and the containing frame. | |
7bfac547 MR |
1617 | |
1618 | As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to | |
1619 | its buffer. Functions like `set-window-buffer' may change the buffer | |
1620 | displayed by a window, unless that window is strongly dedicated to its | |
1621 | buffer. If and when `set-window-buffer' displays another buffer in a | |
496e208e | 1622 | window, it also makes sure that the window is no more dedicated. */) |
5842a27b | 1623 | (Lisp_Object window, Lisp_Object flag) |
7ab12479 JB |
1624 | { |
1625 | register struct window *w = decode_window (window); | |
1626 | ||
d653c8cc | 1627 | w->dedicated = flag; |
7ab12479 JB |
1628 | return w->dedicated; |
1629 | } | |
1630 | ||
496e208e MR |
1631 | DEFUN ("window-prev-buffers", Fwindow_prev_buffers, Swindow_prev_buffers, |
1632 | 0, 1, 0, | |
1633 | doc: /* Return buffers previously shown in WINDOW. | |
1634 | WINDOW must be a live window and defaults to the selected one. | |
1635 | ||
94e0933e CY |
1636 | The return value is a list of elements (BUFFER WINDOW-START POS), |
1637 | where BUFFER is a buffer, WINDOW-START is the start position of the | |
1638 | window for that buffer, and POS is a window-specific point value. */) | |
496e208e MR |
1639 | (Lisp_Object window) |
1640 | { | |
1641 | return decode_window (window)->prev_buffers; | |
1642 | } | |
1643 | ||
1644 | DEFUN ("set-window-prev-buffers", Fset_window_prev_buffers, | |
1645 | Sset_window_prev_buffers, 2, 2, 0, | |
1646 | doc: /* Set WINDOW's previous buffers to PREV-BUFFERS. | |
94e0933e | 1647 | WINDOW must be a live window and defaults to the selected one. |
496e208e | 1648 | |
94e0933e CY |
1649 | PREV-BUFFERS should be a list of elements (BUFFER WINDOW-START POS), |
1650 | where BUFFER is a buffer, WINDOW-START is the start position of the | |
1651 | window for that buffer, and POS is a window-specific point value. */) | |
496e208e MR |
1652 | (Lisp_Object window, Lisp_Object prev_buffers) |
1653 | { | |
9b1c252e | 1654 | return decode_window (window)->prev_buffers = prev_buffers; |
496e208e MR |
1655 | } |
1656 | ||
1657 | DEFUN ("window-next-buffers", Fwindow_next_buffers, Swindow_next_buffers, | |
1658 | 0, 1, 0, | |
1659 | doc: /* Return list of buffers recently re-shown in WINDOW. | |
1660 | WINDOW must be a live window and defaults to the selected one. */) | |
1661 | (Lisp_Object window) | |
1662 | { | |
1663 | return decode_window (window)->next_buffers; | |
1664 | } | |
1665 | ||
1666 | DEFUN ("set-window-next-buffers", Fset_window_next_buffers, | |
1667 | Sset_window_next_buffers, 2, 2, 0, | |
1668 | doc: /* Set WINDOW's next buffers to NEXT-BUFFERS. | |
94e0933e CY |
1669 | WINDOW must be a live window and defaults to the selected one. |
1670 | NEXT-BUFFERS should be a list of buffers. */) | |
496e208e MR |
1671 | (Lisp_Object window, Lisp_Object next_buffers) |
1672 | { | |
9b1c252e | 1673 | return decode_window (window)->next_buffers = next_buffers; |
496e208e | 1674 | } |
d653c8cc | 1675 | |
cfbb2395 JB |
1676 | DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters, |
1677 | 0, 1, 0, | |
d653c8cc MR |
1678 | doc: /* Return the parameters of WINDOW and their values. |
1679 | WINDOW defaults to the selected window. The return value is a list of | |
87e68db4 | 1680 | elements of the form (PARAMETER . VALUE). */) |
5842a27b | 1681 | (Lisp_Object window) |
cfbb2395 | 1682 | { |
496e208e | 1683 | return Fcopy_alist (decode_any_window (window)->window_parameters); |
cfbb2395 JB |
1684 | } |
1685 | ||
1686 | DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter, | |
1687 | 2, 2, 0, | |
d653c8cc MR |
1688 | doc: /* Return WINDOW's value for PARAMETER. |
1689 | WINDOW defaults to the selected window. */) | |
5842a27b | 1690 | (Lisp_Object window, Lisp_Object parameter) |
cfbb2395 | 1691 | { |
927abf37 JB |
1692 | Lisp_Object result; |
1693 | ||
496e208e | 1694 | result = Fassq (parameter, decode_any_window (window)->window_parameters); |
927abf37 | 1695 | return CDR_SAFE (result); |
cfbb2395 JB |
1696 | } |
1697 | ||
cfbb2395 JB |
1698 | DEFUN ("set-window-parameter", Fset_window_parameter, |
1699 | Sset_window_parameter, 3, 3, 0, | |
d653c8cc MR |
1700 | doc: /* Set WINDOW's value of PARAMETER to VALUE. |
1701 | WINDOW defaults to the selected window. Return VALUE. */) | |
5842a27b | 1702 | (Lisp_Object window, Lisp_Object parameter, Lisp_Object value) |
cfbb2395 | 1703 | { |
496e208e | 1704 | register struct window *w = decode_any_window (window); |
cfbb2395 JB |
1705 | Lisp_Object old_alist_elt; |
1706 | ||
1707 | old_alist_elt = Fassq (parameter, w->window_parameters); | |
12bb3111 | 1708 | if (NILP (old_alist_elt)) |
cfbb2395 JB |
1709 | w->window_parameters = Fcons (Fcons (parameter, value), w->window_parameters); |
1710 | else | |
1711 | Fsetcdr (old_alist_elt, value); | |
927abf37 | 1712 | return value; |
cfbb2395 JB |
1713 | } |
1714 | ||
7ab12479 JB |
1715 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, |
1716 | 0, 1, 0, | |
c85322d0 EZ |
1717 | doc: /* Return the display-table that WINDOW is using. |
1718 | WINDOW defaults to the selected window. */) | |
5842a27b | 1719 | (Lisp_Object window) |
7ab12479 JB |
1720 | { |
1721 | return decode_window (window)->display_table; | |
1722 | } | |
1723 | ||
5500c422 GM |
1724 | /* Get the display table for use on window W. This is either W's |
1725 | display table or W's buffer's display table. Ignore the specified | |
1726 | tables if they are not valid; if no valid table is specified, | |
1727 | return 0. */ | |
7ab12479 | 1728 | |
319315f1 | 1729 | struct Lisp_Char_Table * |
971de7fb | 1730 | window_display_table (struct window *w) |
7ab12479 | 1731 | { |
c756cdbe GM |
1732 | struct Lisp_Char_Table *dp = NULL; |
1733 | ||
1734 | if (DISP_TABLE_P (w->display_table)) | |
1735 | dp = XCHAR_TABLE (w->display_table); | |
1736 | else if (BUFFERP (w->buffer)) | |
1737 | { | |
1738 | struct buffer *b = XBUFFER (w->buffer); | |
177c0ea7 | 1739 | |
4b4deea2 TT |
1740 | if (DISP_TABLE_P (BVAR (b, display_table))) |
1741 | dp = XCHAR_TABLE (BVAR (b, display_table)); | |
c756cdbe GM |
1742 | else if (DISP_TABLE_P (Vstandard_display_table)) |
1743 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1744 | } | |
171d003c | 1745 | |
c756cdbe | 1746 | return dp; |
7ab12479 JB |
1747 | } |
1748 | ||
3a2712f9 | 1749 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 | 1750 | doc: /* Set WINDOW's display-table to TABLE. */) |
5842a27b | 1751 | (register Lisp_Object window, Lisp_Object table) |
7ab12479 JB |
1752 | { |
1753 | register struct window *w; | |
7ab12479 JB |
1754 | |
1755 | w = decode_window (window); | |
1756 | w->display_table = table; | |
1757 | return table; | |
1758 | } | |
1759 | \f | |
562dd5e9 | 1760 | /* Record info on buffer window W is displaying |
7ab12479 | 1761 | when it is about to cease to display that buffer. */ |
dfcf069d | 1762 | static void |
971de7fb | 1763 | unshow_buffer (register struct window *w) |
7ab12479 | 1764 | { |
12cae7c0 | 1765 | Lisp_Object buf; |
b73ea88e | 1766 | struct buffer *b; |
7ab12479 | 1767 | |
12cae7c0 | 1768 | buf = w->buffer; |
b73ea88e RS |
1769 | b = XBUFFER (buf); |
1770 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1771 | abort (); |
1772 | ||
573f41ab | 1773 | #if 0 |
7ab12479 JB |
1774 | if (w == XWINDOW (selected_window) |
1775 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1776 | /* Do this except when the selected window's buffer | |
1777 | is being removed from some other window. */ | |
573f41ab RS |
1778 | #endif |
1779 | /* last_window_start records the start position that this buffer | |
1780 | had in the last window to be disconnected from it. | |
1781 | Now that this statement is unconditional, | |
1782 | it is possible for the buffer to be displayed in the | |
1783 | selected window, while last_window_start reflects another | |
1784 | window which was recently showing the same buffer. | |
1785 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1786 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1787 | |
1788 | /* Point in the selected window's buffer | |
1789 | is actually stored in that buffer, and the window's pointm isn't used. | |
1790 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1791 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1792 | /* This line helps to fix Horsley's testbug.el bug. */ | |
4b4deea2 TT |
1793 | && !(WINDOWP (BVAR (b, last_selected_window)) |
1794 | && w != XWINDOW (BVAR (b, last_selected_window)) | |
1795 | && EQ (buf, XWINDOW (BVAR (b, last_selected_window))->buffer))) | |
b73ea88e RS |
1796 | temp_set_point_both (b, |
1797 | clip_to_bounds (BUF_BEGV (b), | |
1798 | XMARKER (w->pointm)->charpos, | |
1799 | BUF_ZV (b)), | |
1800 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1801 | marker_byte_position (w->pointm), | |
1802 | BUF_ZV_BYTE (b))); | |
177c0ea7 | 1803 | |
4b4deea2 TT |
1804 | if (WINDOWP (BVAR (b, last_selected_window)) |
1805 | && w == XWINDOW (BVAR (b, last_selected_window))) | |
1806 | BVAR (b, last_selected_window) = Qnil; | |
7ab12479 JB |
1807 | } |
1808 | ||
1a13852e MR |
1809 | /* Put NEW into the window structure in place of OLD. SETFLAG zero |
1810 | means change window structure only. Otherwise store geometry and | |
1811 | other settings as well. */ | |
dfcf069d | 1812 | static void |
1a13852e | 1813 | replace_window (Lisp_Object old, Lisp_Object new, int setflag) |
7ab12479 JB |
1814 | { |
1815 | register Lisp_Object tem; | |
1a13852e | 1816 | register struct window *o = XWINDOW (old), *n = XWINDOW (new); |
7ab12479 | 1817 | |
1a13852e MR |
1818 | /* If OLD is its frame's root window, then NEW is the new |
1819 | root window for that frame. */ | |
7f4161e0 | 1820 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
1a13852e MR |
1821 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = new; |
1822 | ||
1823 | if (setflag) | |
1824 | { | |
1825 | n->left_col = o->left_col; | |
1826 | n->top_line = o->top_line; | |
1827 | n->total_cols = o->total_cols; | |
1828 | n->total_lines = o->total_lines; | |
1829 | n->normal_cols = o->normal_cols; | |
1830 | o->normal_cols = make_float (1.0); | |
1831 | n->normal_lines = o->normal_lines; | |
1832 | o->normal_lines = make_float (1.0); | |
1833 | n->desired_matrix = n->current_matrix = 0; | |
1834 | n->vscroll = 0; | |
1835 | memset (&n->cursor, 0, sizeof (n->cursor)); | |
1836 | memset (&n->last_cursor, 0, sizeof (n->last_cursor)); | |
1837 | memset (&n->phys_cursor, 0, sizeof (n->phys_cursor)); | |
1838 | n->phys_cursor_type = -1; | |
1839 | n->phys_cursor_width = -1; | |
1840 | n->must_be_updated_p = 0; | |
1841 | n->pseudo_window_p = 0; | |
1842 | XSETFASTINT (n->window_end_vpos, 0); | |
1843 | XSETFASTINT (n->window_end_pos, 0); | |
1844 | n->window_end_valid = Qnil; | |
1845 | n->frozen_window_start_p = 0; | |
1a13852e MR |
1846 | } |
1847 | ||
1848 | n->next = tem = o->next; | |
265a9e55 | 1849 | if (!NILP (tem)) |
1a13852e | 1850 | XWINDOW (tem)->prev = new; |
7ab12479 | 1851 | |
1a13852e | 1852 | n->prev = tem = o->prev; |
265a9e55 | 1853 | if (!NILP (tem)) |
1a13852e | 1854 | XWINDOW (tem)->next = new; |
7ab12479 | 1855 | |
1a13852e | 1856 | n->parent = tem = o->parent; |
265a9e55 | 1857 | if (!NILP (tem)) |
7ab12479 JB |
1858 | { |
1859 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1a13852e | 1860 | XWINDOW (tem)->vchild = new; |
7ab12479 | 1861 | if (EQ (XWINDOW (tem)->hchild, old)) |
1a13852e | 1862 | XWINDOW (tem)->hchild = new; |
7ab12479 | 1863 | } |
1a13852e MR |
1864 | } |
1865 | ||
1866 | /* If window WINDOW and its parent window are iso-combined, merge | |
1867 | WINDOW's children into those of its parent window and mark WINDOW as | |
1868 | deleted. */ | |
1869 | ||
1870 | static void | |
1871 | recombine_windows (Lisp_Object window) | |
1872 | { | |
1873 | struct window *w, *p, *c; | |
1874 | Lisp_Object parent, child; | |
1875 | int horflag; | |
1876 | ||
1877 | w = XWINDOW (window); | |
1878 | parent = w->parent; | |
b6f67890 | 1879 | if (!NILP (parent) && NILP (w->combination_limit)) |
1a13852e MR |
1880 | { |
1881 | p = XWINDOW (parent); | |
1882 | if (((!NILP (p->vchild) && !NILP (w->vchild)) | |
1883 | || (!NILP (p->hchild) && !NILP (w->hchild)))) | |
1884 | /* WINDOW and PARENT are both either a vertical or a horizontal | |
1885 | combination. */ | |
1886 | { | |
1887 | horflag = NILP (w->vchild); | |
1888 | child = horflag ? w->hchild : w->vchild; | |
1889 | c = XWINDOW (child); | |
1890 | ||
1891 | /* Splice WINDOW's children into its parent's children and | |
1892 | assign new normal sizes. */ | |
1893 | if (NILP (w->prev)) | |
1894 | if (horflag) | |
1895 | p->hchild = child; | |
1896 | else | |
1897 | p->vchild = child; | |
1898 | else | |
1899 | { | |
1900 | c->prev = w->prev; | |
1901 | XWINDOW (w->prev)->next = child; | |
1902 | } | |
1903 | ||
1904 | while (c) | |
1905 | { | |
1906 | c->parent = parent; | |
1907 | ||
1908 | if (horflag) | |
1909 | c->normal_cols | |
1910 | = make_float (XFLOATINT (c->total_cols) | |
1911 | / XFLOATINT (p->total_cols)); | |
1912 | else | |
1913 | c->normal_lines | |
1914 | = make_float (XFLOATINT (c->total_lines) | |
1915 | / XFLOATINT (p->total_lines)); | |
1916 | ||
1917 | if (NILP (c->next)) | |
1918 | { | |
1919 | if (!NILP (w->next)) | |
1920 | { | |
1921 | c->next = w->next; | |
1922 | XWINDOW (c->next)->prev = child; | |
1923 | } | |
1924 | ||
1925 | c = 0; | |
1926 | } | |
1927 | else | |
1928 | { | |
1929 | child = c->next; | |
1930 | c = XWINDOW (child); | |
1931 | } | |
1932 | } | |
7ab12479 | 1933 | |
1a13852e MR |
1934 | /* WINDOW can be deleted now. */ |
1935 | w->vchild = w->hchild = Qnil; | |
1936 | } | |
1937 | } | |
7ab12479 | 1938 | } |
6198ccd0 MR |
1939 | |
1940 | /* If WINDOW can be deleted, delete it. */ | |
4475bec4 | 1941 | static void |
6198ccd0 MR |
1942 | delete_deletable_window (Lisp_Object window) |
1943 | { | |
1944 | if (!NILP (call1 (Qwindow_deletable_p, window))) | |
1945 | call1 (Qdelete_window, window); | |
1946 | } | |
1a13852e | 1947 | \f |
67492200 GM |
1948 | /*********************************************************************** |
1949 | Window List | |
1950 | ***********************************************************************/ | |
1951 | ||
f95464e4 GM |
1952 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1953 | pointer. This is a callback function for foreach_window, used in | |
496e208e | 1954 | the window_list function. */ |
67492200 GM |
1955 | |
1956 | static int | |
971de7fb | 1957 | add_window_to_list (struct window *w, void *user_data) |
67492200 | 1958 | { |
f95464e4 | 1959 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1960 | Lisp_Object window; |
1961 | XSETWINDOW (window, w); | |
212116d6 | 1962 | *list = Fcons (window, *list); |
67492200 GM |
1963 | return 1; |
1964 | } | |
1965 | ||
1966 | ||
1967 | /* Return a list of all windows, for use by next_window. If | |
1968 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1969 | list, cache it in Vwindow_list, and return that. */ | |
1970 | ||
1971 | static Lisp_Object | |
971de7fb | 1972 | window_list (void) |
67492200 GM |
1973 | { |
1974 | if (!CONSP (Vwindow_list)) | |
1975 | { | |
1976 | Lisp_Object tail; | |
212116d6 | 1977 | |
67492200 GM |
1978 | Vwindow_list = Qnil; |
1979 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1980 | { |
1981 | Lisp_Object args[2]; | |
1982 | ||
1983 | /* We are visiting windows in canonical order, and add | |
1984 | new windows at the front of args[1], which means we | |
1985 | have to reverse this list at the end. */ | |
1986 | args[1] = Qnil; | |
1987 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
1988 | args[0] = Vwindow_list; | |
1989 | args[1] = Fnreverse (args[1]); | |
1990 | Vwindow_list = Fnconc (2, args); | |
1991 | } | |
67492200 | 1992 | } |
177c0ea7 | 1993 | |
67492200 GM |
1994 | return Vwindow_list; |
1995 | } | |
1996 | ||
1997 | ||
118ea242 GM |
1998 | /* Value is non-zero if WINDOW satisfies the constraints given by |
1999 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 2000 | |
118ea242 GM |
2001 | MINIBUF t means WINDOW may be minibuffer windows. |
2002 | `lambda' means WINDOW may not be a minibuffer window. | |
2003 | a window means a specific minibuffer window | |
67492200 | 2004 | |
118ea242 GM |
2005 | ALL_FRAMES t means search all frames, |
2006 | nil means search just current frame, | |
aa248733 MS |
2007 | `visible' means search just visible frames on the |
2008 | current terminal, | |
2009 | 0 means search visible and iconified frames on the | |
2010 | current terminal, | |
118ea242 GM |
2011 | a window means search the frame that window belongs to, |
2012 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
2013 | |
2014 | static int | |
971de7fb | 2015 | candidate_window_p (Lisp_Object window, Lisp_Object owindow, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 GM |
2016 | { |
2017 | struct window *w = XWINDOW (window); | |
2018 | struct frame *f = XFRAME (w->frame); | |
2019 | int candidate_p = 1; | |
2020 | ||
2021 | if (!BUFFERP (w->buffer)) | |
2022 | candidate_p = 0; | |
2023 | else if (MINI_WINDOW_P (w) | |
2024 | && (EQ (minibuf, Qlambda) | |
2025 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
2026 | { | |
2027 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
2028 | If it is a window, consider only that one. */ | |
2029 | candidate_p = 0; | |
2030 | } | |
118ea242 GM |
2031 | else if (EQ (all_frames, Qt)) |
2032 | candidate_p = 1; | |
67492200 | 2033 | else if (NILP (all_frames)) |
118ea242 GM |
2034 | { |
2035 | xassert (WINDOWP (owindow)); | |
2036 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
2037 | } | |
67492200 GM |
2038 | else if (EQ (all_frames, Qvisible)) |
2039 | { | |
2040 | FRAME_SAMPLE_VISIBILITY (f); | |
de509a60 SM |
2041 | candidate_p = FRAME_VISIBLE_P (f) |
2042 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
2043 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
2044 | ||
67492200 GM |
2045 | } |
2046 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
2047 | { | |
2048 | FRAME_SAMPLE_VISIBILITY (f); | |
ca2d5566 SM |
2049 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
2050 | #ifdef HAVE_X_WINDOWS | |
2051 | /* Yuck!! If we've just created the frame and the | |
2052 | window-manager requested the user to place it | |
2053 | manually, the window may still not be considered | |
2054 | `visible'. I'd argue it should be at least | |
2055 | something like `iconified', but don't know how to do | |
2056 | that yet. --Stef */ | |
2057 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
2058 | && !f->output_data.x->has_been_visible) | |
2059 | #endif | |
de509a60 SM |
2060 | ) |
2061 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
2062 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
67492200 | 2063 | } |
67492200 GM |
2064 | else if (WINDOWP (all_frames)) |
2065 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
2066 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
2067 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
2068 | else if (FRAMEP (all_frames)) |
2069 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
2070 | |
2071 | return candidate_p; | |
2072 | } | |
2073 | ||
2074 | ||
2075 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
aa248733 MS |
2076 | Fwindow_list. See candidate_window_p for the meaning of WINDOW, |
2077 | MINIBUF, and ALL_FRAMES. */ | |
67492200 GM |
2078 | |
2079 | static void | |
971de7fb | 2080 | decode_next_window_args (Lisp_Object *window, Lisp_Object *minibuf, Lisp_Object *all_frames) |
67492200 GM |
2081 | { |
2082 | if (NILP (*window)) | |
2083 | *window = selected_window; | |
2084 | else | |
b7826503 | 2085 | CHECK_LIVE_WINDOW (*window); |
177c0ea7 | 2086 | |
67492200 GM |
2087 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
2088 | does. */ | |
2089 | if (NILP (*minibuf)) | |
2090 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
2091 | else if (!EQ (*minibuf, Qt)) | |
2092 | *minibuf = Qlambda; | |
177c0ea7 | 2093 | |
67492200 GM |
2094 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
2095 | => count none of them, or a specific minibuffer window (the | |
2096 | active one) to count. */ | |
2097 | ||
2098 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
2099 | if (NILP (*all_frames)) | |
2100 | *all_frames = (!EQ (*minibuf, Qlambda) | |
2101 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
2102 | : Qnil); | |
2103 | else if (EQ (*all_frames, Qvisible)) | |
2104 | ; | |
0f8fe9a2 | 2105 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
2106 | ; |
2107 | else if (FRAMEP (*all_frames)) | |
2108 | ; | |
2109 | else if (!EQ (*all_frames, Qt)) | |
2110 | *all_frames = Qnil; | |
67492200 GM |
2111 | } |
2112 | ||
2113 | ||
ab6d1131 | 2114 | /* Return the next or previous window of WINDOW in cyclic ordering |
67492200 GM |
2115 | of windows. NEXT_P non-zero means return the next window. See the |
2116 | documentation string of next-window for the meaning of MINIBUF and | |
2117 | ALL_FRAMES. */ | |
2118 | ||
2119 | static Lisp_Object | |
971de7fb | 2120 | next_window (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames, int next_p) |
67492200 GM |
2121 | { |
2122 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 2123 | |
67492200 GM |
2124 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
2125 | return the first window on the frame. */ | |
2126 | if (FRAMEP (all_frames) | |
2127 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
2128 | return Fframe_first_window (all_frames); | |
177c0ea7 | 2129 | |
212116d6 | 2130 | if (next_p) |
67492200 GM |
2131 | { |
2132 | Lisp_Object list; | |
177c0ea7 | 2133 | |
67492200 GM |
2134 | /* Find WINDOW in the list of all windows. */ |
2135 | list = Fmemq (window, window_list ()); | |
2136 | ||
2137 | /* Scan forward from WINDOW to the end of the window list. */ | |
2138 | if (CONSP (list)) | |
2139 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 2140 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2141 | break; |
2142 | ||
2143 | /* Scan from the start of the window list up to WINDOW. */ | |
2144 | if (!CONSP (list)) | |
2145 | for (list = Vwindow_list; | |
2146 | CONSP (list) && !EQ (XCAR (list), window); | |
2147 | list = XCDR (list)) | |
118ea242 | 2148 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2149 | break; |
2150 | ||
2151 | if (CONSP (list)) | |
2152 | window = XCAR (list); | |
2153 | } | |
2154 | else | |
2155 | { | |
2156 | Lisp_Object candidate, list; | |
177c0ea7 | 2157 | |
67492200 GM |
2158 | /* Scan through the list of windows for candidates. If there are |
2159 | candidate windows in front of WINDOW, the last one of these | |
2160 | is the one we want. If there are candidates following WINDOW | |
2161 | in the list, again the last one of these is the one we want. */ | |
2162 | candidate = Qnil; | |
2163 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
2164 | { | |
2165 | if (EQ (XCAR (list), window)) | |
2166 | { | |
2167 | if (WINDOWP (candidate)) | |
2168 | break; | |
2169 | } | |
118ea242 GM |
2170 | else if (candidate_window_p (XCAR (list), window, minibuf, |
2171 | all_frames)) | |
67492200 GM |
2172 | candidate = XCAR (list); |
2173 | } | |
2174 | ||
2175 | if (WINDOWP (candidate)) | |
2176 | window = candidate; | |
2177 | } | |
2178 | ||
2179 | return window; | |
2180 | } | |
7ab12479 | 2181 | |
7ab12479 | 2182 | |
a7ca3326 | 2183 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
ab6d1131 | 2184 | doc: /* Return window following WINDOW in cyclic ordering of windows. |
87e68db4 | 2185 | WINDOW must be a live window and defaults to the selected one. The |
9397e56f MR |
2186 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to |
2187 | consider. | |
2188 | ||
2189 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2190 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2191 | even if the minibuffer is not active. Any other value means do not | |
2192 | consider the minibuffer window even if the minibuffer is active. | |
2193 | ||
2194 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2195 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2196 | minibuffer counts, consider all windows on all frames that share that | |
2197 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2198 | meanings: | |
2199 | ||
2200 | - t means consider all windows on all existing frames. | |
2201 | ||
2202 | - `visible' means consider all windows on all visible frames. | |
2203 | ||
2204 | - 0 (the number zero) means consider all windows on all visible and | |
2205 | iconified frames. | |
2206 | ||
2207 | - A frame means consider all windows on that frame only. | |
ab6d1131 | 2208 | |
ab6d1131 | 2209 | Anything else means consider all windows on WINDOW's frame and no |
9397e56f | 2210 | others. |
fdb82f93 PJ |
2211 | |
2212 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
2213 | `next-window' to iterate through the entire cycle of acceptable | |
2214 | windows, eventually ending up back at the window you started with. | |
2215 | `previous-window' traverses the same cycle, in the reverse order. */) | |
5842a27b | 2216 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2217 | { |
67492200 | 2218 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
2219 | } |
2220 | ||
67492200 | 2221 | |
26f6279d | 2222 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
ab6d1131 | 2223 | doc: /* Return window preceding WINDOW in cyclic ordering of windows. |
9397e56f MR |
2224 | WINDOW must be a live window and defaults to the selected one. The |
2225 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to | |
2226 | consider. | |
2227 | ||
2228 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2229 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2230 | even if the minibuffer is not active. Any other value means do not | |
2231 | consider the minibuffer window even if the minibuffer is active. | |
2232 | ||
2233 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2234 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2235 | minibuffer counts, consider all windows on all frames that share that | |
2236 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2237 | meanings: | |
2238 | ||
2239 | - t means consider all windows on all existing frames. | |
2240 | ||
2241 | - `visible' means consider all windows on all visible frames. | |
2242 | ||
2243 | - 0 (the number zero) means consider all windows on all visible and | |
2244 | iconified frames. | |
2245 | ||
2246 | - A frame means consider all windows on that frame only. | |
2247 | ||
2248 | Anything else means consider all windows on WINDOW's frame and no | |
2249 | others. | |
ab6d1131 MR |
2250 | |
2251 | If you use consistent values for MINIBUF and ALL-FRAMES, you can | |
2252 | use `previous-window' to iterate through the entire cycle of | |
2253 | acceptable windows, eventually ending up back at the window you | |
2254 | started with. `next-window' traverses the same cycle, in the | |
2255 | reverse order. */) | |
5842a27b | 2256 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2257 | { |
67492200 | 2258 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2259 | } |
2260 | ||
67492200 | 2261 | |
ab6d1131 | 2262 | /* Return a list of windows in cyclic ordering. Arguments are like |
cd2904bd GM |
2263 | for `next-window'. */ |
2264 | ||
2265 | static Lisp_Object | |
971de7fb | 2266 | window_list_1 (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 | 2267 | { |
403de3b4 | 2268 | Lisp_Object tail, list, rest; |
67492200 GM |
2269 | |
2270 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2271 | list = Qnil; | |
177c0ea7 | 2272 | |
67492200 | 2273 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2274 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2275 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2276 | |
403de3b4 RS |
2277 | /* Rotate the list to start with WINDOW. */ |
2278 | list = Fnreverse (list); | |
2279 | rest = Fmemq (window, list); | |
2280 | if (!NILP (rest) && !EQ (rest, list)) | |
2281 | { | |
1725a7c9 | 2282 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2283 | ; |
2284 | XSETCDR (tail, Qnil); | |
2285 | list = nconc2 (rest, list); | |
2286 | } | |
2287 | return list; | |
67492200 GM |
2288 | } |
2289 | ||
2290 | ||
abde8f8c MR |
2291 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, |
2292 | doc: /* Return a list of windows on FRAME, starting with WINDOW. | |
2293 | FRAME nil or omitted means use the selected frame. | |
49745b39 | 2294 | WINDOW nil or omitted means use the window selected within FRAME. |
abde8f8c MR |
2295 | MINIBUF t means include the minibuffer window, even if it isn't active. |
2296 | MINIBUF nil or omitted means include the minibuffer window only | |
2297 | if it's active. | |
2298 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2299 | (Lisp_Object frame, Lisp_Object minibuf, Lisp_Object window) | |
2300 | { | |
2301 | if (NILP (window)) | |
2302 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; | |
2303 | CHECK_WINDOW (window); | |
2304 | if (NILP (frame)) | |
2305 | frame = selected_frame; | |
2306 | ||
2307 | if (!EQ (frame, XWINDOW (window)->frame)) | |
2308 | error ("Window is on a different frame"); | |
2309 | ||
2310 | return window_list_1 (window, minibuf, frame); | |
2311 | } | |
2312 | ||
2313 | ||
1a13852e MR |
2314 | DEFUN ("window-list-1", Fwindow_list_1, Swindow_list_1, 0, 3, 0, |
2315 | doc: /* Return a list of all live windows. | |
2316 | WINDOW specifies the first window to list and defaults to the selected | |
2317 | window. | |
2318 | ||
2319 | Optional argument MINIBUF nil or omitted means consider the minibuffer | |
2320 | window only if the minibuffer is active. MINIBUF t means consider the | |
2321 | minibuffer window even if the minibuffer is not active. Any other value | |
2322 | means do not consider the minibuffer window even if the minibuffer is | |
2323 | active. | |
2324 | ||
2325 | Optional argument ALL-FRAMES nil or omitted means consider all windows | |
2326 | on WINDOW's frame, plus the minibuffer window if specified by the | |
2327 | MINIBUF argument. If the minibuffer counts, consider all windows on all | |
2328 | frames that share that minibuffer too. The following non-nil values of | |
2329 | ALL-FRAMES have special meanings: | |
2330 | ||
2331 | - t means consider all windows on all existing frames. | |
2332 | ||
2333 | - `visible' means consider all windows on all visible frames. | |
2334 | ||
2335 | - 0 (the number zero) means consider all windows on all visible and | |
2336 | iconified frames. | |
2337 | ||
2338 | - A frame means consider all windows on that frame only. | |
2339 | ||
2340 | Anything else means consider all windows on WINDOW's frame and no | |
2341 | others. | |
2342 | ||
2343 | If WINDOW is not on the list of windows returned, some other window will | |
8350f087 | 2344 | be listed first but no error is signaled. */) |
1a13852e MR |
2345 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
2346 | { | |
2347 | return window_list_1 (window, minibuf, all_frames); | |
2348 | } | |
7ab12479 JB |
2349 | \f |
2350 | /* Look at all windows, performing an operation specified by TYPE | |
2351 | with argument OBJ. | |
75d8f668 | 2352 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2353 | Qnil, look at just the selected frame; |
89bca612 | 2354 | Qvisible, look at visible frames; |
75d8f668 | 2355 | a frame, just look at windows on that frame. |
85fe3b5e | 2356 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2357 | |
2358 | enum window_loop | |
2359 | { | |
2360 | WINDOW_LOOP_UNUSED, | |
9397e56f MR |
2361 | GET_BUFFER_WINDOW, /* Arg is buffer */ |
2362 | REPLACE_BUFFER_IN_WINDOWS_SAFELY, /* Arg is buffer */ | |
2363 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ | |
3f8ab7bd | 2364 | CHECK_ALL_WINDOWS |
7ab12479 JB |
2365 | }; |
2366 | ||
2367 | static Lisp_Object | |
971de7fb | 2368 | window_loop (enum window_loop type, Lisp_Object obj, int mini, Lisp_Object frames) |
7ab12479 | 2369 | { |
118ea242 | 2370 | Lisp_Object window, windows, best_window, frame_arg; |
9397e56f | 2371 | int frame_best_window_flag = 0; |
118ea242 | 2372 | struct frame *f; |
ffdc852d | 2373 | struct gcpro gcpro1; |
177c0ea7 | 2374 | |
44fa5b1e JB |
2375 | /* If we're only looping through windows on a particular frame, |
2376 | frame points to that frame. If we're looping through windows | |
2377 | on all frames, frame is 0. */ | |
2378 | if (FRAMEP (frames)) | |
118ea242 | 2379 | f = XFRAME (frames); |
44fa5b1e | 2380 | else if (NILP (frames)) |
118ea242 | 2381 | f = SELECTED_FRAME (); |
7ab12479 | 2382 | else |
118ea242 | 2383 | f = NULL; |
177c0ea7 | 2384 | |
118ea242 | 2385 | if (f) |
89bca612 | 2386 | frame_arg = Qlambda; |
0f8fe9a2 | 2387 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2388 | frame_arg = frames; |
89bca612 RS |
2389 | else if (EQ (frames, Qvisible)) |
2390 | frame_arg = frames; | |
118ea242 GM |
2391 | else |
2392 | frame_arg = Qt; | |
7ab12479 | 2393 | |
89bca612 RS |
2394 | /* frame_arg is Qlambda to stick to one frame, |
2395 | Qvisible to consider all visible frames, | |
2396 | or Qt otherwise. */ | |
2397 | ||
7ab12479 | 2398 | /* Pick a window to start with. */ |
017b2bad | 2399 | if (WINDOWP (obj)) |
118ea242 GM |
2400 | window = obj; |
2401 | else if (f) | |
2402 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2403 | else |
118ea242 | 2404 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2405 | |
cd2904bd | 2406 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2407 | GCPRO1 (windows); |
7ab12479 | 2408 | best_window = Qnil; |
118ea242 | 2409 | |
e67a1dea | 2410 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2411 | { |
118ea242 | 2412 | struct window *w; |
177c0ea7 | 2413 | |
118ea242 GM |
2414 | window = XCAR (windows); |
2415 | w = XWINDOW (window); | |
177c0ea7 | 2416 | |
118ea242 GM |
2417 | /* Note that we do not pay attention here to whether the frame |
2418 | is visible, since Fwindow_list skips non-visible frames if | |
2419 | that is desired, under the control of frame_arg. */ | |
2420 | if (!MINI_WINDOW_P (w) | |
9397e56f MR |
2421 | /* For REPLACE_BUFFER_IN_WINDOWS_SAFELY, we must always |
2422 | consider all windows. */ | |
2423 | || type == REPLACE_BUFFER_IN_WINDOWS_SAFELY | |
7ab12479 JB |
2424 | || (mini && minibuf_level > 0)) |
2425 | switch (type) | |
2426 | { | |
2427 | case GET_BUFFER_WINDOW: | |
118ea242 | 2428 | if (EQ (w->buffer, obj) |
9397e56f MR |
2429 | /* Don't find any minibuffer window except the one that |
2430 | is currently in use. */ | |
2431 | && (MINI_WINDOW_P (w) ? EQ (window, minibuf_window) : 1)) | |
118ea242 | 2432 | { |
9397e56f MR |
2433 | if (EQ (window, selected_window)) |
2434 | /* Preferably return the selected window. */ | |
ca2d5566 | 2435 | RETURN_UNGCPRO (window); |
9397e56f MR |
2436 | else if (EQ (XWINDOW (window)->frame, selected_frame) |
2437 | && !frame_best_window_flag) | |
2438 | /* Prefer windows on the current frame (but don't | |
2439 | choose another one if we have one already). */ | |
118ea242 | 2440 | { |
9397e56f MR |
2441 | best_window = window; |
2442 | frame_best_window_flag = 1; | |
7ab12479 | 2443 | } |
9397e56f MR |
2444 | else if (NILP (best_window)) |
2445 | best_window = window; | |
7ab12479 JB |
2446 | } |
2447 | break; | |
2448 | ||
9397e56f MR |
2449 | case REPLACE_BUFFER_IN_WINDOWS_SAFELY: |
2450 | /* We could simply check whether the buffer shown by window | |
2451 | is live, and show another buffer in case it isn't. */ | |
118ea242 | 2452 | if (EQ (w->buffer, obj)) |
7ab12479 | 2453 | { |
9397e56f MR |
2454 | /* Undedicate WINDOW. */ |
2455 | w->dedicated = Qnil; | |
2456 | /* Make WINDOW show the buffer returned by | |
2457 | other_buffer_safely, don't run any hooks. */ | |
2458 | set_window_buffer | |
2459 | (window, other_buffer_safely (w->buffer), 0, 0); | |
2460 | /* If WINDOW is the selected window, make its buffer | |
2461 | current. But do so only if the window shows the | |
2462 | current buffer (Bug#6454). */ | |
2463 | if (EQ (window, selected_window) | |
2464 | && XBUFFER (w->buffer) == current_buffer) | |
2465 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2466 | } |
2467 | break; | |
3f8ab7bd | 2468 | |
6b61353c KH |
2469 | case REDISPLAY_BUFFER_WINDOWS: |
2470 | if (EQ (w->buffer, obj)) | |
2471 | { | |
2472 | mark_window_display_accurate (window, 0); | |
2473 | w->update_mode_line = Qt; | |
2474 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; | |
2475 | ++update_mode_lines; | |
2476 | best_window = window; | |
2477 | } | |
2478 | break; | |
2479 | ||
3f8ab7bd RS |
2480 | /* Check for a window that has a killed buffer. */ |
2481 | case CHECK_ALL_WINDOWS: | |
118ea242 | 2482 | if (! NILP (w->buffer) |
4b4deea2 | 2483 | && NILP (BVAR (XBUFFER (w->buffer), name))) |
3f8ab7bd | 2484 | abort (); |
118ea242 | 2485 | break; |
6bbd7a29 GM |
2486 | |
2487 | case WINDOW_LOOP_UNUSED: | |
2488 | break; | |
7ab12479 | 2489 | } |
7ab12479 | 2490 | } |
7ab12479 | 2491 | |
118ea242 | 2492 | UNGCPRO; |
7ab12479 | 2493 | return best_window; |
37962e60 | 2494 | } |
605be8af | 2495 | |
3f8ab7bd RS |
2496 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2497 | ||
e3b27b31 | 2498 | extern void check_all_windows (void) EXTERNALLY_VISIBLE; |
233a4a2c | 2499 | void |
971de7fb | 2500 | check_all_windows (void) |
3f8ab7bd RS |
2501 | { |
2502 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2503 | } | |
2504 | ||
a7ca3326 | 2505 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 0, 2, 0, |
fec89261 | 2506 | doc: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none. |
496e208e MR |
2507 | BUFFER-OR-NAME may be a buffer or a buffer name and defaults to |
2508 | the current buffer. | |
2509 | ||
2510 | The optional argument ALL-FRAMES specifies the frames to consider: | |
2511 | ||
2512 | - t means consider all windows on all existing frames. | |
2513 | ||
2514 | - `visible' means consider all windows on all visible frames. | |
2515 | ||
2516 | - 0 (the number zero) means consider all windows on all visible | |
2517 | and iconified frames. | |
2518 | ||
2519 | - A frame means consider all windows on that frame only. | |
2520 | ||
2521 | Any other value of ALL-FRAMES means consider all windows on the | |
2522 | selected frame and no others. */) | |
2523 | (Lisp_Object buffer_or_name, Lisp_Object all_frames) | |
7ab12479 | 2524 | { |
fec89261 MR |
2525 | Lisp_Object buffer; |
2526 | ||
2527 | if (NILP (buffer_or_name)) | |
2528 | buffer = Fcurrent_buffer (); | |
2529 | else | |
2530 | buffer = Fget_buffer (buffer_or_name); | |
2531 | ||
017b2bad | 2532 | if (BUFFERP (buffer)) |
496e208e | 2533 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, all_frames); |
7ab12479 JB |
2534 | else |
2535 | return Qnil; | |
2536 | } | |
2537 | ||
4b66faf3 | 2538 | static Lisp_Object |
1a13852e MR |
2539 | resize_root_window (Lisp_Object window, Lisp_Object delta, Lisp_Object horizontal, Lisp_Object ignore) |
2540 | { | |
5386012d | 2541 | return call4 (Qwindow_resize_root_window, window, delta, horizontal, ignore); |
1a13852e MR |
2542 | } |
2543 | ||
2544 | ||
2545 | DEFUN ("delete-other-windows-internal", Fdelete_other_windows_internal, | |
2546 | Sdelete_other_windows_internal, 0, 2, "", | |
2547 | doc: /* Make WINDOW fill its frame. | |
2548 | Only the frame WINDOW is on is affected. WINDOW may be any window and | |
2549 | defaults to the selected one. | |
2550 | ||
be7f5545 MR |
2551 | Optional argument ROOT, if non-nil, must specify an internal window such |
2552 | that WINDOW is in its window subtree. If this is the case, replace ROOT | |
2553 | by WINDOW and leave alone any windows not part of ROOT's subtree. | |
1a13852e MR |
2554 | |
2555 | When WINDOW is live try to reduce display jumps by keeping the text | |
2556 | previously visible in WINDOW in the same place on the frame. Doing this | |
2557 | depends on the value of (window-start WINDOW), so if calling this | |
2558 | function in a program gives strange scrolling, make sure the | |
2559 | window-start value is reasonable when this function is called. */) | |
2560 | (Lisp_Object window, Lisp_Object root) | |
2561 | { | |
2562 | struct window *w, *r, *s; | |
2563 | struct frame *f; | |
46a4ce9e PE |
2564 | Lisp_Object sibling, pwindow, swindow IF_LINT (= Qnil), delta; |
2565 | EMACS_INT startpos IF_LINT (= 0); | |
2566 | int top IF_LINT (= 0), new_top, resize_failed; | |
1a13852e MR |
2567 | |
2568 | w = decode_any_window (window); | |
2569 | XSETWINDOW (window, w); | |
2570 | f = XFRAME (w->frame); | |
2571 | ||
2572 | if (NILP (root)) | |
2573 | /* ROOT is the frame's root window. */ | |
2574 | { | |
2575 | root = FRAME_ROOT_WINDOW (f); | |
2576 | r = XWINDOW (root); | |
2577 | } | |
2578 | else | |
2579 | /* ROOT must be an ancestor of WINDOW. */ | |
2580 | { | |
2581 | r = decode_any_window (root); | |
2582 | pwindow = XWINDOW (window)->parent; | |
2583 | while (!NILP (pwindow)) | |
2584 | if (EQ (pwindow, root)) | |
2585 | break; | |
2586 | else | |
2587 | pwindow = XWINDOW (pwindow)->parent; | |
2588 | if (!EQ (pwindow, root)) | |
2589 | error ("Specified root is not an ancestor of specified window"); | |
2590 | } | |
2591 | ||
2592 | if (EQ (window, root)) | |
2593 | /* A noop. */ | |
2594 | return Qnil; | |
2595 | /* I don't understand the "top > 0" part below. If we deal with a | |
2596 | standalone minibuffer it would have been caught by the preceding | |
2597 | test. */ | |
2598 | else if (MINI_WINDOW_P (w)) /* && top > 0) */ | |
2599 | error ("Can't expand minibuffer to full frame"); | |
2600 | ||
2601 | if (!NILP (w->buffer)) | |
2602 | { | |
2603 | startpos = marker_position (w->start); | |
2604 | top = WINDOW_TOP_EDGE_LINE (w) | |
2605 | - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2606 | /* Make sure WINDOW is the frame's selected window. */ | |
2607 | if (!EQ (window, FRAME_SELECTED_WINDOW (f))) | |
2608 | { | |
2609 | if (EQ (selected_frame, w->frame)) | |
2610 | Fselect_window (window, Qnil); | |
2611 | else | |
2612 | FRAME_SELECTED_WINDOW (f) = window; | |
2613 | } | |
2614 | } | |
2615 | else | |
2616 | { | |
be7f5545 MR |
2617 | /* See if the frame's selected window is a part of the window |
2618 | subtree rooted at WINDOW, by finding all the selected window's | |
2619 | parents and comparing each one with WINDOW. If it isn't we | |
2620 | need a new selected window for this frame. */ | |
1a13852e MR |
2621 | swindow = FRAME_SELECTED_WINDOW (f); |
2622 | while (1) | |
2623 | { | |
2624 | pwindow = swindow; | |
2625 | while (!NILP (pwindow) && !EQ (window, pwindow)) | |
2626 | pwindow = XWINDOW (pwindow)->parent; | |
2627 | ||
2628 | if (EQ (window, pwindow)) | |
2629 | /* If WINDOW is an ancestor of SWINDOW, then SWINDOW is ok | |
2630 | as the new selected window. */ | |
2631 | break; | |
2632 | else | |
2633 | /* Else try the previous window of SWINDOW. */ | |
2634 | swindow = Fprevious_window (swindow, Qlambda, Qnil); | |
2635 | } | |
2636 | ||
2637 | if (!EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
2638 | { | |
2639 | if (EQ (selected_frame, w->frame)) | |
2640 | Fselect_window (swindow, Qnil); | |
2641 | else | |
2642 | FRAME_SELECTED_WINDOW (f) = swindow; | |
2643 | } | |
2644 | } | |
2645 | ||
2646 | BLOCK_INPUT; | |
2647 | free_window_matrices (r); | |
2648 | ||
2649 | windows_or_buffers_changed++; | |
2650 | Vwindow_list = Qnil; | |
2651 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
46a4ce9e | 2652 | resize_failed = 0; |
1a13852e MR |
2653 | |
2654 | if (NILP (w->buffer)) | |
2655 | { | |
be7f5545 | 2656 | /* Resize child windows vertically. */ |
1a13852e MR |
2657 | XSETINT (delta, XINT (r->total_lines) - XINT (w->total_lines)); |
2658 | w->top_line = r->top_line; | |
2659 | resize_root_window (window, delta, Qnil, Qnil); | |
d615d6d2 MR |
2660 | if (window_resize_check (w, 0)) |
2661 | window_resize_apply (w, 0); | |
1a13852e MR |
2662 | else |
2663 | { | |
2664 | resize_root_window (window, delta, Qnil, Qt); | |
d615d6d2 MR |
2665 | if (window_resize_check (w, 0)) |
2666 | window_resize_apply (w, 0); | |
1a13852e MR |
2667 | else |
2668 | resize_failed = 1; | |
2669 | } | |
2670 | ||
be7f5545 | 2671 | /* Resize child windows horizontally. */ |
1a13852e MR |
2672 | if (!resize_failed) |
2673 | { | |
2674 | w->left_col = r->left_col; | |
2675 | XSETINT (delta, XINT (r->total_cols) - XINT (w->total_cols)); | |
2676 | w->left_col = r->left_col; | |
2677 | resize_root_window (window, delta, Qt, Qnil); | |
d615d6d2 MR |
2678 | if (window_resize_check (w, 1)) |
2679 | window_resize_apply (w, 1); | |
1a13852e MR |
2680 | else |
2681 | { | |
2682 | resize_root_window (window, delta, Qt, Qt); | |
d615d6d2 MR |
2683 | if (window_resize_check (w, 1)) |
2684 | window_resize_apply (w, 1); | |
1a13852e MR |
2685 | else |
2686 | resize_failed = 1; | |
2687 | } | |
2688 | } | |
2689 | ||
2690 | if (resize_failed) | |
2691 | /* Play safe, if we still can ... */ | |
2692 | { | |
2693 | window = swindow; | |
2694 | w = XWINDOW (window); | |
2695 | } | |
2696 | } | |
2697 | ||
2698 | /* Cleanly unlink WINDOW from window-tree. */ | |
2699 | if (!NILP (w->prev)) | |
2700 | /* Get SIBLING above (on the left of) WINDOW. */ | |
2701 | { | |
2702 | sibling = w->prev; | |
2703 | s = XWINDOW (sibling); | |
2704 | s->next = w->next; | |
2705 | if (!NILP (s->next)) | |
2706 | XWINDOW (s->next)->prev = sibling; | |
2707 | } | |
2708 | else | |
2709 | /* Get SIBLING below (on the right of) WINDOW. */ | |
2710 | { | |
2711 | sibling = w->next; | |
2712 | s = XWINDOW (sibling); | |
2713 | s->prev = Qnil; | |
2714 | if (!NILP (XWINDOW (w->parent)->vchild)) | |
2715 | XWINDOW (w->parent)->vchild = sibling; | |
2716 | else | |
2717 | XWINDOW (w->parent)->hchild = sibling; | |
2718 | } | |
2719 | ||
be7f5545 | 2720 | /* Delete ROOT and all child windows of ROOT. */ |
1a13852e MR |
2721 | if (!NILP (r->vchild)) |
2722 | { | |
be7f5545 | 2723 | delete_all_child_windows (r->vchild); |
1a13852e MR |
2724 | r->vchild = Qnil; |
2725 | } | |
2726 | else if (!NILP (r->hchild)) | |
2727 | { | |
be7f5545 | 2728 | delete_all_child_windows (r->hchild); |
1a13852e MR |
2729 | r->hchild = Qnil; |
2730 | } | |
2731 | ||
2732 | replace_window (root, window, 1); | |
2733 | ||
1a13852e MR |
2734 | /* This must become SWINDOW anyway ....... */ |
2735 | if (!NILP (w->buffer) && !resize_failed) | |
2736 | { | |
2737 | /* Try to minimize scrolling, by setting the window start to the | |
2738 | point will cause the text at the old window start to be at the | |
2739 | same place on the frame. But don't try to do this if the | |
2740 | window start is outside the visible portion (as might happen | |
2741 | when the display is not current, due to typeahead). */ | |
2742 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2743 | if (new_top != top | |
2744 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
2745 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) | |
2746 | { | |
2747 | struct position pos; | |
2748 | struct buffer *obuf = current_buffer; | |
2749 | ||
2750 | Fset_buffer (w->buffer); | |
2751 | /* This computation used to temporarily move point, but that | |
2752 | can have unwanted side effects due to text properties. */ | |
2753 | pos = *vmotion (startpos, -top, w); | |
2754 | ||
2755 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); | |
2756 | w->window_end_valid = Qnil; | |
2757 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE | |
2758 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
2759 | : Qnil); | |
2760 | /* We need to do this, so that the window-scroll-functions | |
2761 | get called. */ | |
2762 | w->optional_new_start = Qt; | |
2763 | ||
2764 | set_buffer_internal (obuf); | |
2765 | } | |
2766 | } | |
2767 | ||
2768 | adjust_glyphs (f); | |
2769 | UNBLOCK_INPUT; | |
2770 | ||
2771 | run_window_configuration_change_hook (f); | |
2772 | ||
2773 | return Qnil; | |
2774 | } | |
2775 | ||
2776 | ||
9397e56f MR |
2777 | void |
2778 | replace_buffer_in_windows (Lisp_Object buffer) | |
7ab12479 | 2779 | { |
9397e56f | 2780 | call1 (Qreplace_buffer_in_windows, buffer); |
7ab12479 JB |
2781 | } |
2782 | ||
ff58478b | 2783 | |
9397e56f MR |
2784 | /* Safely replace BUFFER with some other buffer in all windows of all |
2785 | frames, even those on other keyboards. */ | |
ff58478b RS |
2786 | |
2787 | void | |
9397e56f | 2788 | replace_buffer_in_windows_safely (Lisp_Object buffer) |
ff58478b RS |
2789 | { |
2790 | Lisp_Object tail, frame; | |
2791 | ||
9397e56f MR |
2792 | /* A single call to window_loop won't do the job because it only |
2793 | considers frames on the current keyboard. So loop manually over | |
2794 | frames, and handle each one. */ | |
ff58478b | 2795 | FOR_EACH_FRAME (tail, frame) |
9397e56f | 2796 | window_loop (REPLACE_BUFFER_IN_WINDOWS_SAFELY, buffer, 1, frame); |
ff58478b | 2797 | } |
7ab12479 | 2798 | \f |
a481b3ea JB |
2799 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the |
2800 | minimum allowable size. */ | |
5500c422 | 2801 | |
605be8af | 2802 | void |
971de7fb | 2803 | check_frame_size (FRAME_PTR frame, int *rows, int *cols) |
a481b3ea | 2804 | { |
628df3bf | 2805 | /* For height, we have to see: |
54b8bcb5 RS |
2806 | how many windows the frame has at minimum (one or two), |
2807 | and whether it has a menu bar or other special stuff at the top. */ | |
2808 | int min_height | |
2809 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
2810 | ? MIN_SAFE_WINDOW_HEIGHT | |
2811 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 2812 | |
5500c422 GM |
2813 | if (FRAME_TOP_MARGIN (frame) > 0) |
2814 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2815 | |
2816 | if (*rows < min_height) | |
2817 | *rows = min_height; | |
2818 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2819 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2820 | } | |
2821 | ||
79fd290e | 2822 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
2823 | Return 1 if window width is ok after adjustment; 0 if window |
2824 | is still too narrow. */ | |
2825 | ||
2826 | static int | |
971de7fb | 2827 | adjust_window_margins (struct window *w) |
949cf20f KS |
2828 | { |
2829 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
2830 | - WINDOW_FRINGE_COLS (w) | |
2831 | - WINDOW_SCROLL_BAR_COLS (w)); | |
2832 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
2833 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
2834 | ||
2835 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
2836 | return 1; | |
2837 | ||
2838 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
2839 | return 0; | |
2840 | ||
2841 | /* Window's text area is too narrow, but reducing the window | |
2842 | margins will fix that. */ | |
2843 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
2844 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
2845 | { | |
2846 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
2847 | w->left_margin_cols = w->right_margin_cols | |
2848 | = make_number (margin_cols/2); | |
2849 | else | |
2850 | w->right_margin_cols = make_number (margin_cols); | |
2851 | } | |
2852 | else | |
2853 | w->left_margin_cols = make_number (margin_cols); | |
2854 | return 1; | |
2855 | } | |
562dd5e9 | 2856 | \f |
562dd5e9 MR |
2857 | static Lisp_Object Fset_window_margins (Lisp_Object, Lisp_Object, Lisp_Object); |
2858 | static Lisp_Object Fset_window_fringes (Lisp_Object, Lisp_Object, Lisp_Object, | |
2859 | Lisp_Object); | |
2860 | static Lisp_Object Fset_window_scroll_bars (Lisp_Object, Lisp_Object, | |
2861 | Lisp_Object, Lisp_Object); | |
2862 | static Lisp_Object Fset_window_vscroll (Lisp_Object, Lisp_Object, Lisp_Object); | |
6b61353c | 2863 | |
9397e56f MR |
2864 | /* The following three routines are needed for running a window's |
2865 | configuration change hook. */ | |
562dd5e9 MR |
2866 | static void |
2867 | run_funs (Lisp_Object funs) | |
2868 | { | |
2869 | for (; CONSP (funs); funs = XCDR (funs)) | |
2870 | if (!EQ (XCAR (funs), Qt)) | |
2871 | call0 (XCAR (funs)); | |
2872 | } | |
6b61353c | 2873 | |
9397e56f MR |
2874 | static Lisp_Object |
2875 | select_window_norecord (Lisp_Object window) | |
2876 | { | |
2877 | return WINDOW_LIVE_P (window) | |
2878 | ? Fselect_window (window, Qt) : selected_window; | |
2879 | } | |
2880 | ||
2881 | static Lisp_Object | |
2882 | select_frame_norecord (Lisp_Object frame) | |
2883 | { | |
2884 | return FRAME_LIVE_P (XFRAME (frame)) | |
2885 | ? Fselect_frame (frame, Qt) : selected_frame; | |
2886 | } | |
6b61353c | 2887 | |
562dd5e9 MR |
2888 | void |
2889 | run_window_configuration_change_hook (struct frame *f) | |
2890 | { | |
2891 | int count = SPECPDL_INDEX (); | |
2892 | Lisp_Object frame, global_wcch | |
2893 | = Fdefault_value (Qwindow_configuration_change_hook); | |
2894 | XSETFRAME (frame, f); | |
6b61353c | 2895 | |
562dd5e9 MR |
2896 | if (NILP (Vrun_hooks)) |
2897 | return; | |
6b61353c | 2898 | |
562dd5e9 MR |
2899 | /* Use the right buffer. Matters when running the local hooks. */ |
2900 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
6b61353c | 2901 | { |
562dd5e9 MR |
2902 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
2903 | Fset_buffer (Fwindow_buffer (Qnil)); | |
2904 | } | |
6a44ffb3 | 2905 | |
1a13852e MR |
2906 | if (SELECTED_FRAME () != f) |
2907 | { | |
2908 | record_unwind_protect (select_frame_norecord, Fselected_frame ()); | |
2909 | select_frame_norecord (frame); | |
2910 | } | |
2911 | ||
6a44ffb3 SM |
2912 | /* Look for buffer-local values. */ |
2913 | { | |
2914 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
2915 | for (; CONSP (windows); windows = XCDR (windows)) | |
2916 | { | |
2917 | Lisp_Object window = XCAR (windows); | |
2918 | Lisp_Object buffer = Fwindow_buffer (window); | |
2919 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
2920 | buffer))) | |
2921 | { | |
46a4ce9e | 2922 | int inner_count = SPECPDL_INDEX (); |
6a44ffb3 SM |
2923 | record_unwind_protect (select_window_norecord, Fselected_window ()); |
2924 | select_window_norecord (window); | |
2925 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
2926 | buffer)); | |
46a4ce9e | 2927 | unbind_to (inner_count, Qnil); |
fec89261 | 2928 | } |
6a44ffb3 SM |
2929 | } |
2930 | } | |
047aaeb9 | 2931 | |
6a44ffb3 SM |
2932 | run_funs (global_wcch); |
2933 | unbind_to (count, Qnil); | |
ef264c42 SM |
2934 | } |
2935 | ||
1a13852e MR |
2936 | DEFUN ("run-window-configuration-change-hook", Frun_window_configuration_change_hook, |
2937 | Srun_window_configuration_change_hook, 1, 1, 0, | |
2938 | doc: /* Run `window-configuration-change-hook' for FRAME. */) | |
2939 | (Lisp_Object frame) | |
2940 | { | |
2941 | CHECK_LIVE_FRAME (frame); | |
2942 | run_window_configuration_change_hook (XFRAME (frame)); | |
2943 | return Qnil; | |
2944 | } | |
2945 | ||
5500c422 GM |
2946 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
2947 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
2948 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
2949 | margins, fringes, and scroll-bar settings of the window are not | |
2950 | reset from the buffer's local settings. */ | |
7ab12479 | 2951 | |
5500c422 | 2952 | void |
971de7fb | 2953 | set_window_buffer (Lisp_Object window, Lisp_Object buffer, int run_hooks_p, int keep_margins_p) |
5500c422 GM |
2954 | { |
2955 | struct window *w = XWINDOW (window); | |
2956 | struct buffer *b = XBUFFER (buffer); | |
aed13378 | 2957 | int count = SPECPDL_INDEX (); |
c3b232e4 | 2958 | int samebuf = EQ (buffer, w->buffer); |
7ab12479 JB |
2959 | |
2960 | w->buffer = buffer; | |
86e48436 RS |
2961 | |
2962 | if (EQ (window, selected_window)) | |
4b4deea2 | 2963 | BVAR (b, last_selected_window) = window; |
beb4e312 | 2964 | |
c49a0495 KS |
2965 | /* Let redisplay errors through. */ |
2966 | b->display_error_modiff = 0; | |
2967 | ||
beb4e312 | 2968 | /* Update time stamps of buffer display. */ |
4b4deea2 TT |
2969 | if (INTEGERP (BVAR (b, display_count))) |
2970 | XSETINT (BVAR (b, display_count), XINT (BVAR (b, display_count)) + 1); | |
2971 | BVAR (b, display_time) = Fcurrent_time (); | |
86e48436 | 2972 | |
d834a2e9 | 2973 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 | 2974 | XSETFASTINT (w->window_end_vpos, 0); |
72af86bd | 2975 | memset (&w->last_cursor, 0, sizeof w->last_cursor); |
5a41ab94 | 2976 | w->window_end_valid = Qnil; |
c3b232e4 | 2977 | if (!(keep_margins_p && samebuf)) |
23fe745a | 2978 | { /* If we're not actually changing the buffer, don't reset hscroll and |
c3b232e4 SM |
2979 | vscroll. This case happens for example when called from |
2980 | change_frame_size_1, where we use a dummy call to | |
2981 | Fset_window_buffer on the frame's selected window (and no other) | |
2982 | just in order to run window-configuration-change-hook. | |
2983 | Resetting hscroll and vscroll here is problematic for things like | |
2984 | image-mode and doc-view-mode since it resets the image's position | |
2985 | whenever we resize the frame. */ | |
2986 | w->hscroll = w->min_hscroll = make_number (0); | |
2987 | w->vscroll = 0; | |
2988 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
2989 | set_marker_restricted (w->start, | |
2990 | make_number (b->last_window_start), | |
2991 | buffer); | |
2992 | w->start_at_line_beg = Qnil; | |
2993 | w->force_start = Qnil; | |
2994 | XSETFASTINT (w->last_modified, 0); | |
2995 | XSETFASTINT (w->last_overlay_modified, 0); | |
2996 | } | |
2997 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
2998 | I doubt it's worth the trouble. */ | |
7ab12479 | 2999 | windows_or_buffers_changed++; |
5b03d3c0 | 3000 | |
da39107c | 3001 | /* We must select BUFFER for running the window-scroll-functions. */ |
5b03d3c0 RS |
3002 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3003 | because that might itself be a local variable. */ | |
da39107c | 3004 | if (window_initialized) |
5b03d3c0 | 3005 | { |
da39107c | 3006 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
5b03d3c0 RS |
3007 | Fset_buffer (buffer); |
3008 | } | |
3009 | ||
a1562258 SM |
3010 | XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type); |
3011 | ||
949cf20f KS |
3012 | if (!keep_margins_p) |
3013 | { | |
3014 | /* Set left and right marginal area width etc. from buffer. */ | |
3015 | ||
79fd290e | 3016 | /* This may call adjust_window_margins three times, so |
949cf20f | 3017 | temporarily disable window margins. */ |
6b61353c KH |
3018 | Lisp_Object save_left = w->left_margin_cols; |
3019 | Lisp_Object save_right = w->right_margin_cols; | |
3020 | ||
949cf20f KS |
3021 | w->left_margin_cols = w->right_margin_cols = Qnil; |
3022 | ||
3023 | Fset_window_fringes (window, | |
4b4deea2 TT |
3024 | BVAR (b, left_fringe_width), BVAR (b, right_fringe_width), |
3025 | BVAR (b, fringes_outside_margins)); | |
949cf20f KS |
3026 | |
3027 | Fset_window_scroll_bars (window, | |
4b4deea2 TT |
3028 | BVAR (b, scroll_bar_width), |
3029 | BVAR (b, vertical_scroll_bar_type), Qnil); | |
949cf20f | 3030 | |
6b61353c KH |
3031 | w->left_margin_cols = save_left; |
3032 | w->right_margin_cols = save_right; | |
3033 | ||
949cf20f | 3034 | Fset_window_margins (window, |
4b4deea2 | 3035 | BVAR (b, left_margin_cols), BVAR (b, right_margin_cols)); |
949cf20f | 3036 | } |
7ab12479 | 3037 | |
5500c422 GM |
3038 | if (run_hooks_p) |
3039 | { | |
3040 | if (! NILP (Vwindow_scroll_functions)) | |
3041 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
3042 | Fmarker_position (w->start)); | |
ef264c42 | 3043 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
5500c422 | 3044 | } |
543f5fb1 | 3045 | |
5b03d3c0 | 3046 | unbind_to (count, Qnil); |
5500c422 | 3047 | } |
5b03d3c0 | 3048 | |
a7ca3326 | 3049 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
d653c8cc | 3050 | doc: /* Make WINDOW display BUFFER-OR-NAME as its contents. |
9397e56f MR |
3051 | WINDOW has to be a live window and defaults to the selected one. |
3052 | BUFFER-OR-NAME must be a buffer or the name of an existing buffer. | |
3053 | ||
3054 | Optional third argument KEEP-MARGINS non-nil means that WINDOW's current | |
3055 | display margins, fringe widths, and scroll bar settings are preserved; | |
3056 | the default is to reset these from the local settings for BUFFER-OR-NAME | |
3057 | or the frame defaults. Return nil. | |
d653c8cc | 3058 | |
7bfac547 MR |
3059 | This function throws an error when WINDOW is strongly dedicated to its |
3060 | buffer (that is `window-dedicated-p' returns t for WINDOW) and does not | |
3061 | already display BUFFER-OR-NAME. | |
6cb4a892 | 3062 | |
8fef9de1 MR |
3063 | This function runs `window-scroll-functions' before running |
3064 | `window-configuration-change-hook'. */) | |
5842a27b | 3065 | (register Lisp_Object window, Lisp_Object buffer_or_name, Lisp_Object keep_margins) |
5500c422 | 3066 | { |
d653c8cc | 3067 | register Lisp_Object tem, buffer; |
5500c422 | 3068 | register struct window *w = decode_window (window); |
5500c422 | 3069 | |
bed0c171 | 3070 | XSETWINDOW (window, w); |
d653c8cc | 3071 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 3072 | CHECK_BUFFER (buffer); |
4b4deea2 | 3073 | if (NILP (BVAR (XBUFFER (buffer), name))) |
5500c422 GM |
3074 | error ("Attempt to display deleted buffer"); |
3075 | ||
3076 | tem = w->buffer; | |
aac0c6e3 MR |
3077 | if (NILP (tem)) |
3078 | error ("Window is deleted"); | |
3079 | else if (!EQ (tem, Qt)) | |
d653c8cc | 3080 | /* w->buffer is t when the window is first being set up. */ |
5500c422 | 3081 | { |
9397e56f MR |
3082 | if (!EQ (tem, buffer)) |
3083 | { | |
3084 | if (EQ (w->dedicated, Qt)) | |
3085 | /* WINDOW is strongly dedicated to its buffer, signal an | |
3086 | error. */ | |
3087 | error ("Window is dedicated to `%s'", SDATA (BVAR (XBUFFER (tem), name))); | |
3088 | else | |
3089 | /* WINDOW is weakly dedicated to its buffer, reset | |
3090 | dedicatedness. */ | |
3091 | w->dedicated = Qnil; | |
3092 | ||
3093 | call1 (Qrecord_window_buffer, window); | |
3094 | } | |
5500c422 GM |
3095 | |
3096 | unshow_buffer (w); | |
3097 | } | |
3098 | ||
949cf20f | 3099 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 | 3100 | |
9397e56f | 3101 | return Qnil; |
c6932ecd | 3102 | } |
b7354ddf | 3103 | \f |
7e5cf297 | 3104 | static Lisp_Object |
971de7fb | 3105 | display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, Lisp_Object override_frame) |
d07f802a | 3106 | { |
87478b52 | 3107 | return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); |
d07f802a RS |
3108 | } |
3109 | ||
6b61353c KH |
3110 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, |
3111 | 0, 1, 0, | |
5a1048a5 | 3112 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 3113 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3114 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c | 3115 | displaying that buffer. */) |
5842a27b | 3116 | (Lisp_Object object) |
6b61353c KH |
3117 | { |
3118 | if (NILP (object)) | |
3119 | { | |
3120 | windows_or_buffers_changed++; | |
3121 | update_mode_lines++; | |
3122 | return Qt; | |
3123 | } | |
3124 | ||
3125 | if (WINDOWP (object)) | |
3126 | { | |
3127 | struct window *w = XWINDOW (object); | |
3128 | mark_window_display_accurate (object, 0); | |
3129 | w->update_mode_line = Qt; | |
3130 | if (BUFFERP (w->buffer)) | |
3131 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
3132 | ++update_mode_lines; | |
3133 | return Qt; | |
3134 | } | |
0cc1039f | 3135 | |
6b61353c KH |
3136 | if (STRINGP (object)) |
3137 | object = Fget_buffer (object); | |
4b4deea2 | 3138 | if (BUFFERP (object) && !NILP (BVAR (XBUFFER (object), name))) |
6b61353c KH |
3139 | { |
3140 | /* Walk all windows looking for buffer, and force update | |
3141 | of each of those windows. */ | |
3142 | ||
3143 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); | |
3144 | return NILP (object) ? Qnil : Qt; | |
3145 | } | |
3146 | ||
3147 | /* If nothing suitable was found, just return. | |
3148 | We could signal an error, but this feature will typically be used | |
3149 | asynchronously in timers or process sentinels, so we don't. */ | |
3150 | return Qnil; | |
3151 | } | |
3152 | ||
3153 | ||
7ab12479 | 3154 | void |
971de7fb | 3155 | temp_output_buffer_show (register Lisp_Object buf) |
7ab12479 JB |
3156 | { |
3157 | register struct buffer *old = current_buffer; | |
3158 | register Lisp_Object window; | |
3159 | register struct window *w; | |
3160 | ||
4b4deea2 | 3161 | BVAR (XBUFFER (buf), directory) = BVAR (current_buffer, directory); |
bccd3dd1 | 3162 | |
7ab12479 | 3163 | Fset_buffer (buf); |
c6367666 | 3164 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3165 | BEGV = BEG; |
3166 | ZV = Z; | |
3167 | SET_PT (BEG); | |
7ab12479 JB |
3168 | set_buffer_internal (old); |
3169 | ||
e67a1dea | 3170 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3171 | call1 (Vtemp_buffer_show_function, buf); |
3172 | else | |
3173 | { | |
4ee88440 | 3174 | window = display_buffer (buf, Qnil, Qnil); |
7ab12479 | 3175 | |
1ae1a37d | 3176 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3177 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3178 | Vminibuf_scroll_window = window; |
3179 | w = XWINDOW (window); | |
d834a2e9 | 3180 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3181 | XSETFASTINT (w->min_hscroll, 0); |
2d0834cc SM |
3182 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3183 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3184 | |
beb4e312 | 3185 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3186 | and its buffer current. */ |
dee091a3 JD |
3187 | { |
3188 | int count = SPECPDL_INDEX (); | |
3189 | Lisp_Object prev_window, prev_buffer; | |
3190 | prev_window = selected_window; | |
3191 | XSETBUFFER (prev_buffer, old); | |
3192 | ||
3193 | /* Select the window that was chosen, for running the hook. | |
3194 | Note: Both Fselect_window and select_window_norecord may | |
3195 | set-buffer to the buffer displayed in the window, | |
3196 | so we need to save the current buffer. --stef */ | |
3197 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3198 | record_unwind_protect (select_window_norecord, prev_window); | |
3199 | Fselect_window (window, Qt); | |
3200 | Fset_buffer (w->buffer); | |
3201 | Frun_hooks (1, &Qtemp_buffer_show_hook); | |
3202 | unbind_to (count, Qnil); | |
3203 | } | |
2cccc823 | 3204 | } |
7ab12479 | 3205 | } |
3e21b6a7 SM |
3206 | |
3207 | DEFUN ("internal-temp-output-buffer-show", | |
3208 | Ftemp_output_buffer_show, Stemp_output_buffer_show, | |
3209 | 1, 1, 0, | |
87e68db4 | 3210 | doc: /* Internal function for `with-output-to-temp-buffer'. */) |
3e21b6a7 SM |
3211 | (Lisp_Object buf) |
3212 | { | |
3213 | temp_output_buffer_show (buf); | |
3214 | return Qnil; | |
3215 | } | |
7ab12479 | 3216 | \f |
1a13852e MR |
3217 | /* Make new window, have it replace WINDOW in window-tree, and make |
3218 | WINDOW its only vertical child (HORFLAG 1 means make WINDOW its only | |
3219 | horizontal child). */ | |
3220 | static void | |
3221 | make_parent_window (Lisp_Object window, int horflag) | |
3222 | { | |
3223 | Lisp_Object parent; | |
3224 | register struct window *o, *p; | |
3225 | int i; | |
3226 | ||
3227 | o = XWINDOW (window); | |
3228 | p = allocate_window (); | |
3229 | for (i = 0; i < VECSIZE (struct window); ++i) | |
3230 | ((struct Lisp_Vector *) p)->contents[i] | |
3231 | = ((struct Lisp_Vector *) o)->contents[i]; | |
3232 | XSETWINDOW (parent, p); | |
3233 | ||
3234 | ++sequence_number; | |
3235 | XSETFASTINT (p->sequence_number, sequence_number); | |
1a13852e MR |
3236 | |
3237 | replace_window (window, parent, 1); | |
3238 | ||
3239 | o->next = Qnil; | |
3240 | o->prev = Qnil; | |
3241 | o->parent = parent; | |
3242 | ||
3243 | p->hchild = horflag ? window : Qnil; | |
3244 | p->vchild = horflag ? Qnil : window; | |
3245 | p->start = Qnil; | |
3246 | p->pointm = Qnil; | |
3247 | p->buffer = Qnil; | |
b6f67890 | 3248 | p->combination_limit = Qnil; |
1a13852e MR |
3249 | p->window_parameters = Qnil; |
3250 | } | |
3251 | ||
496e208e MR |
3252 | /* Make new window from scratch. */ |
3253 | Lisp_Object | |
3254 | make_window (void) | |
3255 | { | |
3256 | Lisp_Object window; | |
3257 | register struct window *w; | |
3258 | ||
3259 | w = allocate_window (); | |
3260 | /* Initialize all Lisp data. */ | |
3261 | w->frame = w->mini_p = Qnil; | |
3262 | w->next = w->prev = w->hchild = w->vchild = w->parent = Qnil; | |
3263 | XSETFASTINT (w->left_col, 0); | |
3264 | XSETFASTINT (w->top_line, 0); | |
3265 | XSETFASTINT (w->total_lines, 0); | |
3266 | XSETFASTINT (w->total_cols, 0); | |
3267 | w->normal_lines = make_float (1.0); | |
3268 | w->normal_cols = make_float (1.0); | |
3269 | XSETFASTINT (w->new_total, 0); | |
3270 | XSETFASTINT (w->new_normal, 0); | |
3271 | w->buffer = Qnil; | |
3272 | w->start = Fmake_marker (); | |
3273 | w->pointm = Fmake_marker (); | |
3274 | w->force_start = w->optional_new_start = Qnil; | |
3275 | XSETFASTINT (w->hscroll, 0); | |
3276 | XSETFASTINT (w->min_hscroll, 0); | |
3277 | XSETFASTINT (w->use_time, 0); | |
3278 | ++sequence_number; | |
3279 | XSETFASTINT (w->sequence_number, sequence_number); | |
496e208e MR |
3280 | w->temslot = w->last_modified = w->last_overlay_modified = Qnil; |
3281 | XSETFASTINT (w->last_point, 0); | |
3282 | w->last_had_star = w->vertical_scroll_bar = Qnil; | |
3283 | w->left_margin_cols = w->right_margin_cols = Qnil; | |
3284 | w->left_fringe_width = w->right_fringe_width = Qnil; | |
3285 | w->fringes_outside_margins = Qnil; | |
3286 | w->scroll_bar_width = Qnil; | |
3287 | w->vertical_scroll_bar_type = Qt; | |
3288 | w->last_mark_x = w->last_mark_y = Qnil; | |
3289 | XSETFASTINT (w->window_end_pos, 0); | |
3290 | XSETFASTINT (w->window_end_vpos, 0); | |
3291 | w->window_end_valid = w->update_mode_line = Qnil; | |
3292 | w->start_at_line_beg = w->display_table = w->dedicated = Qnil; | |
3293 | w->base_line_number = w->base_line_pos = w->region_showing = Qnil; | |
3294 | w->column_number_displayed = w->redisplay_end_trigger = Qnil; | |
b6f67890 | 3295 | w->combination_limit = w->window_parameters = Qnil; |
496e208e MR |
3296 | w->prev_buffers = w->next_buffers = Qnil; |
3297 | /* Initialize non-Lisp data. */ | |
3298 | w->desired_matrix = w->current_matrix = 0; | |
3299 | w->nrows_scale_factor = w->ncols_scale_factor = 1; | |
3300 | memset (&w->cursor, 0, sizeof (w->cursor)); | |
3301 | memset (&w->last_cursor, 0, sizeof (w->last_cursor)); | |
3302 | memset (&w->phys_cursor, 0, sizeof (w->phys_cursor)); | |
3303 | w->phys_cursor_type = -1; | |
3304 | w->phys_cursor_width = -1; | |
31b39d13 | 3305 | w->phys_cursor_on_p = 0; |
496e208e MR |
3306 | w->last_cursor_off_p = w->cursor_off_p = 0; |
3307 | w->must_be_updated_p = 0; | |
3308 | w->pseudo_window_p = 0; | |
3309 | w->frozen_window_start_p = 0; | |
3310 | w->vscroll = 0; | |
496e208e MR |
3311 | /* Reset window_list. */ |
3312 | Vwindow_list = Qnil; | |
3313 | /* Return window. */ | |
3314 | XSETWINDOW (window, w); | |
3315 | return window; | |
3316 | } | |
3317 | \f | |
3318 | DEFUN ("set-window-new-total", Fset_window_new_total, Sset_window_new_total, 2, 3, 0, | |
3319 | doc: /* Set new total size of WINDOW to SIZE. | |
3320 | Return SIZE. | |
3321 | ||
3322 | Optional argument ADD non-nil means add SIZE to the new total size of | |
3323 | WINDOW and return the sum. | |
3324 | ||
be7f5545 | 3325 | Note: This function does not operate on any child windows of WINDOW. */) |
496e208e MR |
3326 | (Lisp_Object window, Lisp_Object size, Lisp_Object add) |
3327 | { | |
3328 | struct window *w = decode_any_window (window); | |
3329 | ||
3330 | CHECK_NUMBER (size); | |
3331 | if (NILP (add)) | |
3332 | XSETINT (w->new_total, XINT (size)); | |
3333 | else | |
3334 | XSETINT (w->new_total, XINT (w->new_total) + XINT (size)); | |
3335 | ||
3336 | return w->new_total; | |
3337 | } | |
3338 | ||
3339 | DEFUN ("set-window-new-normal", Fset_window_new_normal, Sset_window_new_normal, 1, 2, 0, | |
3340 | doc: /* Set new normal size of WINDOW to SIZE. | |
3341 | Return SIZE. | |
3342 | ||
be7f5545 | 3343 | Note: This function does not operate on any child windows of WINDOW. */) |
496e208e MR |
3344 | (Lisp_Object window, Lisp_Object size) |
3345 | { | |
3346 | struct window *w = decode_any_window (window); | |
3347 | ||
3348 | w->new_normal = size; | |
3349 | return w->new_normal; | |
7ab12479 JB |
3350 | } |
3351 | ||
1a13852e MR |
3352 | /* Return 1 if setting w->total_lines (w->total_cols if HORFLAG is |
3353 | non-zero) to w->new_total would result in correct heights (widths) | |
be7f5545 | 3354 | for window W and recursively all child windows of W. |
1a13852e MR |
3355 | |
3356 | Note: This function does not check any of `window-fixed-size-p', | |
3357 | `window-min-height' or `window-min-width'. It does check that window | |
3358 | sizes do not drop below one line (two columns). */ | |
4b66faf3 | 3359 | static int |
d615d6d2 | 3360 | window_resize_check (struct window *w, int horflag) |
1a13852e MR |
3361 | { |
3362 | struct window *c; | |
3363 | ||
3364 | if (!NILP (w->vchild)) | |
3365 | /* W is a vertical combination. */ | |
3366 | { | |
3367 | c = XWINDOW (w->vchild); | |
3368 | if (horflag) | |
be7f5545 | 3369 | /* All child windows of W must have the same width as W. */ |
1a13852e MR |
3370 | { |
3371 | while (c) | |
3372 | { | |
3373 | if ((XINT (c->new_total) != XINT (w->new_total)) | |
d615d6d2 | 3374 | || !window_resize_check (c, horflag)) |
1a13852e MR |
3375 | return 0; |
3376 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
3377 | } | |
3378 | return 1; | |
3379 | } | |
3380 | else | |
be7f5545 MR |
3381 | /* The sum of the heights of the child windows of W must equal |
3382 | W's height. */ | |
1a13852e MR |
3383 | { |
3384 | int sum_of_sizes = 0; | |
3385 | while (c) | |
3386 | { | |
d615d6d2 | 3387 | if (!window_resize_check (c, horflag)) |
1a13852e MR |
3388 | return 0; |
3389 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); | |
3390 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
3391 | } | |
3392 | return (sum_of_sizes == XINT (w->new_total)); | |
3393 | } | |
3394 | } | |
3395 | else if (!NILP (w->hchild)) | |
3396 | /* W is a horizontal combination. */ | |
3397 | { | |
3398 | c = XWINDOW (w->hchild); | |
3399 | if (horflag) | |
be7f5545 | 3400 | /* The sum of the widths of the child windows of W must equal W's |
1a13852e MR |
3401 | width. */ |
3402 | { | |
3403 | int sum_of_sizes = 0; | |
3404 | while (c) | |
3405 | { | |
d615d6d2 | 3406 | if (!window_resize_check (c, horflag)) |
1a13852e MR |
3407 | return 0; |
3408 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); | |
3409 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
3410 | } | |
3411 | return (sum_of_sizes == XINT (w->new_total)); | |
3412 | } | |
3413 | else | |
be7f5545 | 3414 | /* All child windows of W must have the same height as W. */ |
1a13852e MR |
3415 | { |
3416 | while (c) | |
3417 | { | |
3418 | if ((XINT (c->new_total) != XINT (w->new_total)) | |
d615d6d2 | 3419 | || !window_resize_check (c, horflag)) |
1a13852e MR |
3420 | return 0; |
3421 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
3422 | } | |
3423 | return 1; | |
3424 | } | |
3425 | } | |
3426 | else | |
3427 | /* A leaf window. Make sure it's not too small. The following | |
3428 | hardcodes the values of `window-safe-min-width' (2) and | |
3429 | `window-safe-min-height' (1) which are defined in window.el. */ | |
3430 | return XINT (w->new_total) >= (horflag ? 2 : 1); | |
3431 | } | |
3432 | ||
3433 | /* Set w->total_lines (w->total_cols if HORIZONTAL is non-zero) to | |
be7f5545 MR |
3434 | w->new_total for window W and recursively all child windows of W. |
3435 | Also calculate and assign the new vertical (horizontal) start | |
3436 | positions of each of these windows. | |
1a13852e MR |
3437 | |
3438 | This function does not perform any error checks. Make sure you have | |
d615d6d2 | 3439 | run window_resize_check on W before applying this function. */ |
440a42e3 | 3440 | static void |
d615d6d2 | 3441 | window_resize_apply (struct window *w, int horflag) |
1a13852e | 3442 | { |
46a4ce9e | 3443 | struct window *c; |
1a13852e MR |
3444 | int pos; |
3445 | ||
3446 | /* Note: Assigning new_normal requires that the new total size of the | |
3447 | parent window has been set *before*. */ | |
3448 | if (horflag) | |
3449 | { | |
3450 | w->total_cols = w->new_total; | |
3451 | if (NUMBERP (w->new_normal)) | |
3452 | w->normal_cols = w->new_normal; | |
3453 | ||
3454 | pos = XINT (w->left_col); | |
3455 | } | |
3456 | else | |
3457 | { | |
3458 | w->total_lines = w->new_total; | |
3459 | if (NUMBERP (w->new_normal)) | |
3460 | w->normal_lines = w->new_normal; | |
3461 | ||
3462 | pos = XINT (w->top_line); | |
3463 | } | |
3464 | ||
3465 | if (!NILP (w->vchild)) | |
3466 | /* W is a vertical combination. */ | |
3467 | { | |
3468 | c = XWINDOW (w->vchild); | |
3469 | while (c) | |
3470 | { | |
3471 | if (horflag) | |
3472 | XSETFASTINT (c->left_col, pos); | |
3473 | else | |
3474 | XSETFASTINT (c->top_line, pos); | |
d615d6d2 | 3475 | window_resize_apply (c, horflag); |
1a13852e MR |
3476 | if (!horflag) |
3477 | pos = pos + XINT (c->total_lines); | |
3478 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
3479 | } | |
3480 | } | |
3481 | else if (!NILP (w->hchild)) | |
3482 | /* W is a horizontal combination. */ | |
3483 | { | |
3484 | c = XWINDOW (w->hchild); | |
3485 | while (c) | |
3486 | { | |
3487 | if (horflag) | |
3488 | XSETFASTINT (c->left_col, pos); | |
3489 | else | |
3490 | XSETFASTINT (c->top_line, pos); | |
d615d6d2 | 3491 | window_resize_apply (c, horflag); |
1a13852e MR |
3492 | if (horflag) |
3493 | pos = pos + XINT (c->total_cols); | |
3494 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
3495 | } | |
3496 | } | |
3497 | ||
3498 | /* Clear out some redisplay caches. */ | |
3499 | XSETFASTINT (w->last_modified, 0); | |
3500 | XSETFASTINT (w->last_overlay_modified, 0); | |
3501 | } | |
3502 | ||
3503 | ||
d615d6d2 | 3504 | DEFUN ("window-resize-apply", Fwindow_resize_apply, Swindow_resize_apply, 1, 2, 0, |
1a13852e MR |
3505 | doc: /* Apply requested size values for window-tree of FRAME. |
3506 | Optional argument HORIZONTAL omitted or nil means apply requested height | |
3507 | values. HORIZONTAL non-nil means apply requested width values. | |
3508 | ||
3509 | This function checks whether the requested values sum up to a valid | |
be7f5545 MR |
3510 | window layout, recursively assigns the new sizes of all child windows |
3511 | and calculates and assigns the new start positions of these windows. | |
1a13852e MR |
3512 | |
3513 | Note: This function does not check any of `window-fixed-size-p', | |
3514 | `window-min-height' or `window-min-width'. All these checks have to | |
3515 | be applied on the Elisp level. */) | |
3516 | (Lisp_Object frame, Lisp_Object horizontal) | |
3517 | { | |
3518 | struct frame *f; | |
3519 | struct window *r; | |
3520 | int horflag = !NILP (horizontal); | |
3521 | ||
3522 | if (NILP (frame)) | |
3523 | frame = selected_frame; | |
3524 | CHECK_LIVE_FRAME (frame); | |
3525 | ||
3526 | f = XFRAME (frame); | |
3527 | r = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3528 | ||
d615d6d2 | 3529 | if (!window_resize_check (r, horflag) |
1a13852e MR |
3530 | || ! EQ (r->new_total, (horflag ? r->total_cols : r->total_lines))) |
3531 | return Qnil; | |
3532 | ||
3533 | BLOCK_INPUT; | |
d615d6d2 | 3534 | window_resize_apply (r, horflag); |
1a13852e MR |
3535 | |
3536 | windows_or_buffers_changed++; | |
3537 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3538 | ||
3539 | adjust_glyphs (f); | |
3540 | UNBLOCK_INPUT; | |
3541 | ||
3542 | run_window_configuration_change_hook (f); | |
3543 | ||
3544 | return Qt; | |
3545 | } | |
3546 | ||
3547 | ||
3548 | /* Resize frame F's windows when number of lines of F is set to SIZE. | |
3549 | HORFLAG 1 means resize windows when number of columns of F is set to | |
3550 | SIZE. | |
3551 | ||
3552 | This function can delete all windows but the selected one in order to | |
3553 | satisfy the request. The result will be meaningful if and only if | |
3554 | F's windows have meaningful sizes when you call this. */ | |
3555 | void | |
3556 | resize_frame_windows (struct frame *f, int size, int horflag) | |
3557 | { | |
3558 | Lisp_Object root = f->root_window; | |
3559 | struct window *r = XWINDOW (root); | |
3560 | Lisp_Object mini = f->minibuffer_window; | |
3561 | struct window *m; | |
3562 | /* new_size is the new size of the frame's root window. */ | |
3563 | int new_size = (horflag | |
3564 | ? size | |
3565 | : (size | |
3566 | - FRAME_TOP_MARGIN (f) | |
3567 | - ((FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3568 | ? 1 : 0))); | |
3569 | ||
3570 | XSETFASTINT (r->top_line, FRAME_TOP_MARGIN (f)); | |
3571 | if (NILP (r->vchild) && NILP (r->hchild)) | |
3572 | /* For a leaf root window just set the size. */ | |
3573 | if (horflag) | |
3574 | XSETFASTINT (r->total_cols, new_size); | |
3575 | else | |
3576 | XSETFASTINT (r->total_lines, new_size); | |
3577 | else | |
3578 | { | |
3579 | /* old_size is the old size of the frame's root window. */ | |
3580 | int old_size = XFASTINT (horflag ? r->total_cols : r->total_lines); | |
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); | |
d615d6d2 MR |
3586 | if (window_resize_check (r, horflag) && new_size == XINT (r->new_total)) |
3587 | window_resize_apply (r, horflag); | |
1a13852e MR |
3588 | else |
3589 | { | |
3590 | /* Try with "reasonable" minimum sizes next. */ | |
3591 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qt); | |
d615d6d2 | 3592 | if (window_resize_check (r, horflag) |
1a13852e | 3593 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3594 | window_resize_apply (r, horflag); |
1a13852e MR |
3595 | else |
3596 | { | |
3597 | /* Finally, try with "safe" minimum sizes. */ | |
3598 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qsafe); | |
d615d6d2 | 3599 | if (window_resize_check (r, horflag) |
1a13852e | 3600 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3601 | window_resize_apply (r, horflag); |
1a13852e MR |
3602 | else |
3603 | { | |
3604 | /* We lost. Delete all windows but the frame's | |
3605 | selected one. */ | |
3606 | root = f->selected_window; | |
3607 | Fdelete_other_windows_internal (root, Qnil); | |
3608 | if (horflag) | |
3609 | XSETFASTINT (XWINDOW (root)->total_cols, new_size); | |
3610 | else | |
3611 | XSETFASTINT (XWINDOW (root)->total_lines, new_size); | |
3612 | } | |
3613 | } | |
3614 | } | |
3615 | } | |
3616 | ||
3617 | if (FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3618 | { | |
3619 | m = XWINDOW (mini); | |
3620 | if (horflag) | |
3621 | XSETFASTINT (m->total_cols, size); | |
3622 | else | |
3623 | { | |
3624 | /* Are we sure we always want 1 line here? */ | |
3625 | XSETFASTINT (m->total_lines, 1); | |
3626 | XSETFASTINT (m->top_line, XINT (r->top_line) + XINT (r->total_lines)); | |
3627 | } | |
3628 | } | |
3629 | } | |
3630 | ||
3631 | ||
3632 | DEFUN ("split-window-internal", Fsplit_window_internal, Ssplit_window_internal, 4, 4, 0, | |
3633 | doc: /* Split window OLD. | |
3634 | Second argument TOTAL-SIZE specifies the number of lines or columns of the | |
9397e56f | 3635 | new window. In any case TOTAL-SIZE must be a positive integer. |
1a13852e MR |
3636 | |
3637 | Third argument SIDE nil (or `below') specifies that the new window shall | |
3638 | be located below WINDOW. SIDE `above' means the new window shall be | |
3639 | located above WINDOW. In both cases TOTAL-SIZE specifies the number of | |
3640 | lines of the new window including space reserved for the mode and/or | |
3641 | header line. | |
3642 | ||
3643 | SIDE t (or `right') specifies that the new window shall be located on | |
3644 | the right side of WINDOW. SIDE `left' means the new window shall be | |
3645 | located on the left of WINDOW. In both cases TOTAL-SIZE specifies the | |
3646 | number of columns of the new window including space reserved for fringes | |
3647 | and the scrollbar or a divider column. | |
3648 | ||
3649 | Fourth argument NORMAL-SIZE specifies the normal size of the new window | |
3650 | according to the SIDE argument. | |
3651 | ||
3652 | The new total and normal sizes of all involved windows must have been | |
3653 | set correctly. See the code of `split-window' for how this is done. */) | |
3654 | (Lisp_Object old, Lisp_Object total_size, Lisp_Object side, Lisp_Object normal_size) | |
3655 | { | |
3656 | /* OLD (*o) is the window we have to split. (*p) is either OLD's | |
3657 | parent window or an internal window we have to install as OLD's new | |
3658 | parent. REFERENCE (*r) must denote a live window, or is set to OLD | |
3659 | provided OLD is a leaf window, or to the frame's selected window. | |
3660 | NEW (*n) is the new window created with some parameters taken from | |
3661 | REFERENCE (*r). */ | |
3662 | register Lisp_Object new, frame, reference; | |
3663 | register struct window *o, *p, *n, *r; | |
3664 | struct frame *f; | |
3665 | int horflag | |
3666 | /* HORFLAG is 1 when we split side-by-side, 0 otherwise. */ | |
3667 | = EQ (side, Qt) || EQ (side, Qleft) || EQ (side, Qright); | |
b6f67890 | 3668 | int combination_limit = 0; |
1a13852e MR |
3669 | |
3670 | CHECK_WINDOW (old); | |
3671 | o = XWINDOW (old); | |
3672 | frame = WINDOW_FRAME (o); | |
3673 | f = XFRAME (frame); | |
3674 | ||
3675 | CHECK_NUMBER (total_size); | |
3676 | ||
b6f67890 MR |
3677 | /* Set combination_limit to 1 if we have to make a new parent window. |
3678 | We do that if either `window-combination-limit' is t, or OLD has no | |
3679 | parent, or OLD is ortho-combined. */ | |
3680 | combination_limit = | |
3681 | !NILP (Vwindow_combination_limit) | |
1a13852e MR |
3682 | || NILP (o->parent) |
3683 | || NILP (horflag | |
3684 | ? (XWINDOW (o->parent)->hchild) | |
3685 | : (XWINDOW (o->parent)->vchild)); | |
3686 | ||
3687 | /* We need a live reference window to initialize some parameters. */ | |
3688 | if (WINDOW_LIVE_P (old)) | |
3689 | /* OLD is live, use it as reference window. */ | |
3690 | reference = old; | |
3691 | else | |
3692 | /* Use the frame's selected window as reference window. */ | |
3693 | reference = FRAME_SELECTED_WINDOW (f); | |
3694 | r = XWINDOW (reference); | |
3695 | ||
3696 | /* The following bugs are caught by `split-window'. */ | |
3697 | if (MINI_WINDOW_P (o)) | |
3698 | error ("Attempt to split minibuffer window"); | |
3699 | else if (XINT (total_size) < (horflag ? 2 : 1)) | |
3700 | error ("Size of new window too small (after split)"); | |
a0c2d0ae MR |
3701 | else if (!combination_limit && !NILP (Vwindow_combination_resize)) |
3702 | /* `window-combination-resize' non-nil means try to resize OLD's siblings | |
1a13852e MR |
3703 | proportionally. */ |
3704 | { | |
3705 | p = XWINDOW (o->parent); | |
3706 | /* Temporarily pretend we split the parent window. */ | |
3707 | XSETINT (p->new_total, | |
3708 | XINT (horflag ? p->total_cols : p->total_lines) | |
3709 | - XINT (total_size)); | |
d615d6d2 | 3710 | if (!window_resize_check (p, horflag)) |
1a13852e MR |
3711 | error ("Window sizes don't fit"); |
3712 | else | |
3713 | /* Undo the temporary pretension. */ | |
3714 | p->new_total = horflag ? p->total_cols : p->total_lines; | |
3715 | } | |
3716 | else | |
3717 | { | |
d615d6d2 | 3718 | if (!window_resize_check (o, horflag)) |
1a13852e MR |
3719 | error ("Resizing old window failed"); |
3720 | else if (XINT (total_size) + XINT (o->new_total) | |
3721 | != XINT (horflag ? o->total_cols : o->total_lines)) | |
3722 | error ("Sum of sizes of old and new window don't fit"); | |
3723 | } | |
3724 | ||
3725 | /* This is our point of no return. */ | |
b6f67890 | 3726 | if (combination_limit) |
1a13852e MR |
3727 | { |
3728 | /* Save the old value of o->normal_cols/lines. It gets corrupted | |
3729 | by make_parent_window and we need it below for assigning it to | |
3730 | p->new_normal. */ | |
3731 | Lisp_Object new_normal = horflag ? o->normal_cols : o->normal_lines; | |
3732 | ||
3733 | make_parent_window (old, horflag); | |
3734 | p = XWINDOW (o->parent); | |
b6f67890 MR |
3735 | /* Store value of `window-combination-limit' in new parent's |
3736 | combination_limit slot. */ | |
3737 | p->combination_limit = Vwindow_combination_limit; | |
1a13852e MR |
3738 | /* These get applied below. */ |
3739 | p->new_total = horflag ? o->total_cols : o->total_lines; | |
3740 | p->new_normal = new_normal; | |
3741 | } | |
3742 | else | |
3743 | p = XWINDOW (o->parent); | |
3744 | ||
3745 | windows_or_buffers_changed++; | |
3746 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3747 | new = make_window (); | |
3748 | n = XWINDOW (new); | |
3749 | n->frame = frame; | |
3750 | n->parent = o->parent; | |
3751 | n->vchild = n->hchild = Qnil; | |
3752 | ||
3753 | if (EQ (side, Qabove) || EQ (side, Qleft)) | |
3754 | { | |
3755 | n->prev = o->prev; | |
3756 | if (NILP (n->prev)) | |
3757 | if (horflag) | |
3758 | p->hchild = new; | |
3759 | else | |
3760 | p->vchild = new; | |
3761 | else | |
3762 | XWINDOW (n->prev)->next = new; | |
3763 | n->next = old; | |
3764 | o->prev = new; | |
3765 | } | |
3766 | else | |
3767 | { | |
3768 | n->next = o->next; | |
3769 | if (!NILP (n->next)) | |
3770 | XWINDOW (n->next)->prev = new; | |
3771 | n->prev = old; | |
3772 | o->next = new; | |
3773 | } | |
3774 | ||
3775 | n->buffer = Qt; | |
3776 | n->window_end_valid = Qnil; | |
3777 | memset (&n->last_cursor, 0, sizeof n->last_cursor); | |
3778 | ||
3779 | /* Get special geometry settings from reference window. */ | |
3780 | n->left_margin_cols = r->left_margin_cols; | |
3781 | n->right_margin_cols = r->right_margin_cols; | |
3782 | n->left_fringe_width = r->left_fringe_width; | |
3783 | n->right_fringe_width = r->right_fringe_width; | |
3784 | n->fringes_outside_margins = r->fringes_outside_margins; | |
3785 | n->scroll_bar_width = r->scroll_bar_width; | |
3786 | n->vertical_scroll_bar_type = r->vertical_scroll_bar_type; | |
3787 | ||
1a13852e MR |
3788 | /* Directly assign orthogonal coordinates and sizes. */ |
3789 | if (horflag) | |
3790 | { | |
3791 | n->top_line = o->top_line; | |
3792 | n->total_lines = o->total_lines; | |
3793 | } | |
3794 | else | |
3795 | { | |
3796 | n->left_col = o->left_col; | |
3797 | n->total_cols = o->total_cols; | |
3798 | } | |
3799 | ||
d615d6d2 | 3800 | /* Iso-coordinates and sizes are assigned by window_resize_apply, |
1a13852e MR |
3801 | get them ready here. */ |
3802 | n->new_total = total_size; | |
3803 | n->new_normal = normal_size; | |
3804 | ||
3805 | BLOCK_INPUT; | |
d615d6d2 | 3806 | window_resize_apply (p, horflag); |
1a13852e MR |
3807 | adjust_glyphs (f); |
3808 | /* Set buffer of NEW to buffer of reference window. Don't run | |
3809 | any hooks. */ | |
3810 | set_window_buffer (new, r->buffer, 0, 1); | |
3811 | UNBLOCK_INPUT; | |
3812 | ||
3813 | /* Maybe we should run the scroll functions in Elisp (which already | |
3814 | runs the configuration change hook). */ | |
3815 | if (! NILP (Vwindow_scroll_functions)) | |
3816 | run_hook_with_args_2 (Qwindow_scroll_functions, new, | |
3817 | Fmarker_position (n->start)); | |
3818 | /* Return NEW. */ | |
3819 | return new; | |
3820 | } | |
3821 | ||
3822 | ||
3823 | DEFUN ("delete-window-internal", Fdelete_window_internal, Sdelete_window_internal, 1, 1, 0, | |
3824 | doc: /* Remove WINDOW from its frame. | |
87e68db4 JB |
3825 | WINDOW defaults to the selected window. Return nil. |
3826 | Signal an error when WINDOW is the only window on its frame. */) | |
1a13852e MR |
3827 | (register Lisp_Object window) |
3828 | { | |
3829 | register Lisp_Object parent, sibling, frame, root; | |
3830 | struct window *w, *p, *s, *r; | |
3831 | struct frame *f; | |
3832 | int horflag; | |
3833 | int before_sibling = 0; | |
3834 | ||
3835 | w = decode_any_window (window); | |
3836 | XSETWINDOW (window, w); | |
3837 | if (NILP (w->buffer) && NILP (w->hchild) && NILP (w->vchild)) | |
3838 | /* It's a no-op to delete an already deleted window. */ | |
3839 | return Qnil; | |
3840 | ||
3841 | parent = w->parent; | |
3842 | if (NILP (parent)) | |
3843 | /* Never delete a minibuffer or frame root window. */ | |
3844 | error ("Attempt to delete minibuffer or sole ordinary window"); | |
3845 | else if (NILP (w->prev) && NILP (w->next)) | |
3846 | /* Rather bow out here, this case should be handled on the Elisp | |
3847 | level. */ | |
3848 | error ("Attempt to delete sole window of parent"); | |
3849 | ||
3850 | p = XWINDOW (parent); | |
3851 | horflag = NILP (p->vchild); | |
3852 | ||
3853 | frame = WINDOW_FRAME (w); | |
3854 | f = XFRAME (frame); | |
3855 | ||
3856 | root = FRAME_ROOT_WINDOW (f); | |
3857 | r = XWINDOW (root); | |
3858 | ||
3859 | /* Unlink WINDOW from window tree. */ | |
3860 | if (NILP (w->prev)) | |
3861 | /* Get SIBLING below (on the right of) WINDOW. */ | |
3862 | { | |
3863 | /* before_sibling 1 means WINDOW is the first child of its | |
3864 | parent and thus before the sibling. */ | |
3865 | before_sibling = 1; | |
3866 | sibling = w->next; | |
3867 | s = XWINDOW (sibling); | |
3868 | s->prev = Qnil; | |
3869 | if (horflag) | |
3870 | p->hchild = sibling; | |
3871 | else | |
3872 | p->vchild = sibling; | |
3873 | } | |
3874 | else | |
3875 | /* Get SIBLING above (on the left of) WINDOW. */ | |
3876 | { | |
3877 | sibling = w->prev; | |
3878 | s = XWINDOW (sibling); | |
3879 | s->next = w->next; | |
562dd5e9 MR |
3880 | if (!NILP (s->next)) |
3881 | XWINDOW (s->next)->prev = sibling; | |
7ab12479 JB |
3882 | } |
3883 | ||
d615d6d2 | 3884 | if (window_resize_check (r, horflag) |
562dd5e9 MR |
3885 | && EQ (r->new_total, (horflag ? r->total_cols : r->total_lines))) |
3886 | /* We can delete WINDOW now. */ | |
3887 | { | |
3888 | /* Block input. */ | |
3889 | BLOCK_INPUT; | |
d615d6d2 | 3890 | window_resize_apply (p, horflag); |
0d384044 | 3891 | |
562dd5e9 MR |
3892 | windows_or_buffers_changed++; |
3893 | Vwindow_list = Qnil; | |
3894 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
0d384044 | 3895 | |
562dd5e9 MR |
3896 | w->next = Qnil; /* Don't delete w->next too. */ |
3897 | free_window_matrices (w); | |
bd99e242 | 3898 | |
562dd5e9 | 3899 | if (!NILP (w->vchild)) |
0d384044 | 3900 | { |
be7f5545 | 3901 | delete_all_child_windows (w->vchild); |
562dd5e9 | 3902 | w->vchild = Qnil; |
0d384044 | 3903 | } |
562dd5e9 | 3904 | else if (!NILP (w->hchild)) |
bd99e242 | 3905 | { |
be7f5545 | 3906 | delete_all_child_windows (w->hchild); |
562dd5e9 | 3907 | w->hchild = Qnil; |
bd99e242 | 3908 | } |
562dd5e9 | 3909 | else if (!NILP (w->buffer)) |
bd99e242 | 3910 | { |
562dd5e9 MR |
3911 | unshow_buffer (w); |
3912 | unchain_marker (XMARKER (w->pointm)); | |
3913 | unchain_marker (XMARKER (w->start)); | |
3914 | w->buffer = Qnil; | |
bd99e242 RS |
3915 | } |
3916 | ||
562dd5e9 MR |
3917 | if (NILP (s->prev) && NILP (s->next)) |
3918 | /* A matrjoshka where SIBLING has become the only child of | |
3919 | PARENT. */ | |
c32de52a | 3920 | { |
562dd5e9 MR |
3921 | /* Put SIBLING into PARENT's place. */ |
3922 | replace_window (parent, sibling, 0); | |
3923 | /* Have SIBLING inherit the following three slot values from | |
b6f67890 | 3924 | PARENT (the combination_limit slot is not inherited). */ |
562dd5e9 MR |
3925 | s->normal_cols = p->normal_cols; |
3926 | s->normal_lines = p->normal_lines; | |
562dd5e9 MR |
3927 | /* Mark PARENT as deleted. */ |
3928 | p->vchild = p->hchild = Qnil; | |
3929 | /* Try to merge SIBLING into its new parent. */ | |
3930 | recombine_windows (sibling); | |
c32de52a RS |
3931 | } |
3932 | ||
562dd5e9 MR |
3933 | adjust_glyphs (f); |
3934 | ||
3935 | if (!WINDOW_LIVE_P (FRAME_SELECTED_WINDOW (f))) | |
3936 | /* We deleted the frame's selected window. */ | |
0d384044 | 3937 | { |
562dd5e9 MR |
3938 | /* Use the frame's first window as fallback ... */ |
3939 | Lisp_Object new_selected_window = Fframe_first_window (frame); | |
3940 | /* ... but preferably use its most recently used window. */ | |
3941 | Lisp_Object mru_window; | |
0d384044 | 3942 | |
562dd5e9 MR |
3943 | /* `get-mru-window' might fail for some reason so play it safe |
3944 | - promote the first window _without recording it_ first. */ | |
3945 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
3946 | Fselect_window (new_selected_window, Qt); | |
3947 | else | |
3948 | FRAME_SELECTED_WINDOW (f) = new_selected_window; | |
0d384044 | 3949 | |
562dd5e9 | 3950 | UNBLOCK_INPUT; |
0d384044 | 3951 | |
562dd5e9 MR |
3952 | /* Now look whether `get-mru-window' gets us something. */ |
3953 | mru_window = call1 (Qget_mru_window, frame); | |
3954 | if (WINDOW_LIVE_P (mru_window) | |
3955 | && EQ (XWINDOW (mru_window)->frame, frame)) | |
3956 | new_selected_window = mru_window; | |
bd99e242 | 3957 | |
562dd5e9 MR |
3958 | /* If all ended up well, we now promote the mru window. */ |
3959 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
3960 | Fselect_window (new_selected_window, Qnil); | |
3961 | else | |
3962 | FRAME_SELECTED_WINDOW (f) = new_selected_window; | |
0d384044 RS |
3963 | } |
3964 | else | |
562dd5e9 | 3965 | UNBLOCK_INPUT; |
0d384044 | 3966 | |
562dd5e9 MR |
3967 | /* Must be run by the caller: |
3968 | run_window_configuration_change_hook (f); */ | |
0d384044 | 3969 | } |
562dd5e9 MR |
3970 | else |
3971 | /* We failed: Relink WINDOW into window tree. */ | |
0d384044 | 3972 | { |
562dd5e9 MR |
3973 | if (before_sibling) |
3974 | { | |
3975 | s->prev = window; | |
3976 | if (horflag) | |
3977 | p->hchild = window; | |
3978 | else | |
3979 | p->vchild = window; | |
3980 | } | |
3981 | else | |
3982 | { | |
3983 | s->next = window; | |
3984 | if (!NILP (w->next)) | |
3985 | XWINDOW (w->next)->prev = window; | |
3986 | } | |
3987 | error ("Deletion failed"); | |
0d384044 RS |
3988 | } |
3989 | ||
0d384044 RS |
3990 | return Qnil; |
3991 | } | |
f984d4fc GM |
3992 | \f |
3993 | /*********************************************************************** | |
3994 | Resizing Mini-Windows | |
3995 | ***********************************************************************/ | |
3996 | ||
562dd5e9 MR |
3997 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we |
3998 | can. */ | |
3999 | void | |
4000 | grow_mini_window (struct window *w, int delta) | |
f984d4fc | 4001 | { |
562dd5e9 MR |
4002 | struct frame *f = XFRAME (w->frame); |
4003 | struct window *r; | |
4004 | Lisp_Object root, value; | |
f984d4fc | 4005 | |
562dd5e9 MR |
4006 | xassert (MINI_WINDOW_P (w)); |
4007 | xassert (delta >= 0); | |
f984d4fc | 4008 | |
562dd5e9 MR |
4009 | root = FRAME_ROOT_WINDOW (f); |
4010 | r = XWINDOW (root); | |
5386012d MR |
4011 | value = call2 (Qwindow_resize_root_window_vertically, |
4012 | root, make_number (- delta)); | |
d615d6d2 | 4013 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4014 | { |
562dd5e9 | 4015 | BLOCK_INPUT; |
d615d6d2 | 4016 | window_resize_apply (r, 0); |
f984d4fc | 4017 | |
562dd5e9 MR |
4018 | /* Grow the mini-window. */ |
4019 | XSETFASTINT (w->top_line, XFASTINT (r->top_line) + XFASTINT (r->total_lines)); | |
4020 | XSETFASTINT (w->total_lines, XFASTINT (w->total_lines) - XINT (value)); | |
4021 | XSETFASTINT (w->last_modified, 0); | |
4022 | XSETFASTINT (w->last_overlay_modified, 0); | |
f984d4fc | 4023 | |
562dd5e9 MR |
4024 | adjust_glyphs (f); |
4025 | UNBLOCK_INPUT; | |
f984d4fc GM |
4026 | } |
4027 | } | |
4028 | ||
4029 | ||
562dd5e9 MR |
4030 | /* Shrink mini-window W. */ |
4031 | void | |
4032 | shrink_mini_window (struct window *w) | |
f984d4fc | 4033 | { |
562dd5e9 MR |
4034 | struct frame *f = XFRAME (w->frame); |
4035 | struct window *r; | |
4036 | Lisp_Object root, value; | |
4037 | EMACS_INT size; | |
43b4a21f | 4038 | |
562dd5e9 | 4039 | xassert (MINI_WINDOW_P (w)); |
177c0ea7 | 4040 | |
562dd5e9 MR |
4041 | size = XINT (w->total_lines); |
4042 | if (size > 1) | |
4043 | { | |
4044 | root = FRAME_ROOT_WINDOW (f); | |
4045 | r = XWINDOW (root); | |
5386012d | 4046 | value = call2 (Qwindow_resize_root_window_vertically, |
562dd5e9 | 4047 | root, make_number (size - 1)); |
d615d6d2 | 4048 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4049 | { |
562dd5e9 | 4050 | BLOCK_INPUT; |
d615d6d2 | 4051 | window_resize_apply (r, 0); |
43b4a21f | 4052 | |
562dd5e9 MR |
4053 | /* Shrink the mini-window. */ |
4054 | XSETFASTINT (w->top_line, XFASTINT (r->top_line) + XFASTINT (r->total_lines)); | |
4055 | XSETFASTINT (w->total_lines, 1); | |
43b4a21f | 4056 | |
562dd5e9 MR |
4057 | XSETFASTINT (w->last_modified, 0); |
4058 | XSETFASTINT (w->last_overlay_modified, 0); | |
43b4a21f | 4059 | |
562dd5e9 MR |
4060 | adjust_glyphs (f); |
4061 | UNBLOCK_INPUT; | |
f984d4fc | 4062 | } |
562dd5e9 MR |
4063 | /* If the above failed for whatever strange reason we must make a |
4064 | one window frame here. The same routine will be needed when | |
4065 | shrinking the frame (and probably when making the initial | |
4066 | *scratch* window). For the moment leave things as they are. */ | |
f984d4fc GM |
4067 | } |
4068 | } | |
4069 | ||
562dd5e9 MR |
4070 | DEFUN ("resize-mini-window-internal", Fresize_mini_window_internal, Sresize_mini_window_internal, 1, 1, 0, |
4071 | doc: /* Resize minibuffer window WINDOW. */) | |
4072 | (Lisp_Object window) | |
f984d4fc | 4073 | { |
562dd5e9 MR |
4074 | struct window *w = XWINDOW (window); |
4075 | struct window *r; | |
4076 | struct frame *f; | |
4077 | int height; | |
177c0ea7 | 4078 | |
562dd5e9 MR |
4079 | CHECK_WINDOW (window); |
4080 | f = XFRAME (w->frame); | |
177c0ea7 | 4081 | |
562dd5e9 MR |
4082 | if (!EQ (FRAME_MINIBUF_WINDOW (XFRAME (w->frame)), window)) |
4083 | error ("Not a valid minibuffer window"); | |
4084 | else if (FRAME_MINIBUF_ONLY_P (f)) | |
4085 | error ("Cannot resize a minibuffer-only frame"); | |
177c0ea7 | 4086 | |
562dd5e9 MR |
4087 | r = XWINDOW (FRAME_ROOT_WINDOW (f)); |
4088 | height = XINT (r->total_lines) + XINT (w->total_lines); | |
d615d6d2 | 4089 | if (window_resize_check (r, 0) |
562dd5e9 MR |
4090 | && XINT (w->new_total) > 0 |
4091 | && height == XINT (r->new_total) + XINT (w->new_total)) | |
f984d4fc | 4092 | { |
562dd5e9 | 4093 | BLOCK_INPUT; |
d615d6d2 | 4094 | window_resize_apply (r, 0); |
f984d4fc | 4095 | |
562dd5e9 MR |
4096 | w->total_lines = w->new_total; |
4097 | XSETFASTINT (w->top_line, XINT (r->top_line) + XINT (r->total_lines)); | |
177c0ea7 | 4098 | |
562dd5e9 MR |
4099 | windows_or_buffers_changed++; |
4100 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
f984d4fc | 4101 | adjust_glyphs (f); |
562dd5e9 | 4102 | UNBLOCK_INPUT; |
f984d4fc | 4103 | |
562dd5e9 MR |
4104 | run_window_configuration_change_hook (f); |
4105 | return Qt; | |
86c8e823 | 4106 | } |
562dd5e9 | 4107 | else error ("Failed to resize minibuffer window"); |
f984d4fc | 4108 | } |
562dd5e9 | 4109 | \f |
5500c422 GM |
4110 | /* Mark window cursors off for all windows in the window tree rooted |
4111 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4112 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4113 | the frame are cleared. */ | |
4114 | ||
4115 | void | |
971de7fb | 4116 | mark_window_cursors_off (struct window *w) |
5500c422 GM |
4117 | { |
4118 | while (w) | |
4119 | { | |
4120 | if (!NILP (w->hchild)) | |
4121 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4122 | else if (!NILP (w->vchild)) | |
4123 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
4124 | else | |
4125 | w->phys_cursor_on_p = 0; | |
4126 | ||
4127 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4128 | } | |
4129 | } | |
4130 | ||
4131 | ||
e9c195b1 | 4132 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4133 | |
4134 | int | |
971de7fb | 4135 | window_internal_height (struct window *w) |
7ab12479 | 4136 | { |
949cf20f | 4137 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4138 | |
e9c195b1 GM |
4139 | if (!MINI_WINDOW_P (w)) |
4140 | { | |
4141 | if (!NILP (w->parent) | |
4142 | || !NILP (w->vchild) | |
4143 | || !NILP (w->hchild) | |
4144 | || !NILP (w->next) | |
4145 | || !NILP (w->prev) | |
4146 | || WINDOW_WANTS_MODELINE_P (w)) | |
4147 | --ht; | |
7ab12479 | 4148 | |
e9c195b1 GM |
4149 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4150 | --ht; | |
4151 | } | |
7ab12479 JB |
4152 | |
4153 | return ht; | |
4154 | } | |
5500c422 GM |
4155 | \f |
4156 | /************************************************************************ | |
4157 | Window Scrolling | |
4158 | ***********************************************************************/ | |
535e0b8e | 4159 | |
5500c422 | 4160 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4161 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4162 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4163 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4164 | means don't signal an error if we try to move over BEGV or ZV, | |
4165 | respectively. */ | |
7ab12479 | 4166 | |
101d1605 | 4167 | static void |
971de7fb | 4168 | window_scroll (Lisp_Object window, int n, int whole, int noerror) |
5500c422 | 4169 | { |
cba59f77 RS |
4170 | immediate_quit = 1; |
4171 | ||
5500c422 GM |
4172 | /* If we must, use the pixel-based version which is much slower than |
4173 | the line-based one but can handle varying line heights. */ | |
4174 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
4175 | window_scroll_pixel_based (window, n, whole, noerror); | |
4176 | else | |
4177 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4178 | |
4179 | immediate_quit = 0; | |
5500c422 GM |
4180 | } |
4181 | ||
4182 | ||
4183 | /* Implementation of window_scroll that works based on pixel line | |
4184 | heights. See the comment of window_scroll for parameter | |
4185 | descriptions. */ | |
4186 | ||
4187 | static void | |
971de7fb | 4188 | window_scroll_pixel_based (Lisp_Object window, int n, int whole, int noerror) |
5500c422 GM |
4189 | { |
4190 | struct it it; | |
4191 | struct window *w = XWINDOW (window); | |
4192 | struct text_pos start; | |
5500c422 | 4193 | int this_scroll_margin; |
9d14503e | 4194 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5cdb3cf3 | 4195 | int vscrolled = 0; |
5a857365 | 4196 | int x, y, rtop, rbot, rowh, vpos; |
57b3e30b | 4197 | void *itdata = NULL; |
5500c422 GM |
4198 | |
4199 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
177c0ea7 | 4200 | |
5500c422 | 4201 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4202 | the screen. Allow PT to be partially visible, otherwise |
4203 | something like (scroll-down 1) with PT in the line before | |
4204 | the partially visible one would recenter. */ | |
5a857365 KS |
4205 | |
4206 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 | 4207 | { |
57b3e30b | 4208 | itdata = bidi_shelve_cache (); |
5500c422 GM |
4209 | /* Move backward half the height of the window. Performance note: |
4210 | vmotion used here is about 10% faster, but would give wrong | |
4211 | results for variable height lines. */ | |
4212 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4213 | it.current_y = it.last_visible_y; | |
f204989e | 4214 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4215 | |
5500c422 GM |
4216 | /* The function move_iterator_vertically may move over more than |
4217 | the specified y-distance. If it->w is small, e.g. a | |
4218 | mini-buffer window, we may end up in front of the window's | |
4219 | display area. This is the case when Start displaying at the | |
4220 | start of the line containing PT in this case. */ | |
4221 | if (it.current_y <= 0) | |
4222 | { | |
4223 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4224 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4225 | it.current_y = 0; |
4226 | } | |
4227 | ||
4228 | start = it.current.pos; | |
35928349 | 4229 | bidi_unshelve_cache (itdata, 0); |
5500c422 | 4230 | } |
e56263e5 KS |
4231 | else if (auto_window_vscroll_p) |
4232 | { | |
5a857365 | 4233 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
4234 | { |
4235 | int px; | |
4236 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4237 | if (whole) | |
e856c216 KS |
4238 | dy = max ((window_box_height (w) |
4239 | - next_screen_context_lines * dy), | |
4240 | dy); | |
e56263e5 KS |
4241 | dy *= n; |
4242 | ||
5a857365 | 4243 | if (n < 0) |
e56263e5 | 4244 | { |
5a857365 KS |
4245 | /* Only vscroll backwards if already vscrolled forwards. */ |
4246 | if (w->vscroll < 0 && rtop > 0) | |
4247 | { | |
4248 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
4249 | Fset_window_vscroll (window, make_number (px), Qt); | |
4250 | return; | |
4251 | } | |
e56263e5 | 4252 | } |
5a857365 | 4253 | if (n > 0) |
e56263e5 | 4254 | { |
5a857365 KS |
4255 | /* Do vscroll if already vscrolled or only display line. */ |
4256 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
4257 | { | |
4258 | px = max (0, -w->vscroll + min (rbot, dy)); | |
4259 | Fset_window_vscroll (window, make_number (px), Qt); | |
4260 | return; | |
4261 | } | |
4262 | ||
4263 | /* Maybe modify window start instead of scrolling. */ | |
4264 | if (rbot > 0 || w->vscroll < 0) | |
4265 | { | |
2452438f | 4266 | EMACS_INT spos; |
5a857365 KS |
4267 | |
4268 | Fset_window_vscroll (window, make_number (0), Qt); | |
4269 | /* If there are other text lines above the current row, | |
4270 | move window start to current row. Else to next row. */ | |
4271 | if (rbot > 0) | |
4272 | spos = XINT (Fline_beginning_position (Qnil)); | |
4273 | else | |
4274 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
4275 | set_marker_restricted (w->start, make_number (spos), | |
4276 | w->buffer); | |
4277 | w->start_at_line_beg = Qt; | |
4278 | w->update_mode_line = Qt; | |
4279 | XSETFASTINT (w->last_modified, 0); | |
4280 | XSETFASTINT (w->last_overlay_modified, 0); | |
4281 | /* Set force_start so that redisplay_window will run the | |
4282 | window-scroll-functions. */ | |
4283 | w->force_start = Qt; | |
4284 | return; | |
4285 | } | |
e56263e5 KS |
4286 | } |
4287 | } | |
5a857365 | 4288 | /* Cancel previous vscroll. */ |
e56263e5 KS |
4289 | Fset_window_vscroll (window, make_number (0), Qt); |
4290 | } | |
5500c422 | 4291 | |
57b3e30b | 4292 | itdata = bidi_shelve_cache (); |
d0c38d63 | 4293 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
4294 | point in the same window line as it is now, so get that line. */ |
4295 | if (!NILP (Vscroll_preserve_screen_position)) | |
4296 | { | |
c525d842 | 4297 | /* We preserve the goal pixel coordinate across consecutive |
a4b000fb JL |
4298 | calls to scroll-up, scroll-down and other commands that |
4299 | have the `scroll-command' property. This avoids the | |
c525d842 CY |
4300 | possibility of point becoming "stuck" on a tall line when |
4301 | scrolling by one line. */ | |
66fe93d1 | 4302 | if (window_scroll_pixel_based_preserve_y < 0 |
1344aad4 TT |
4303 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4304 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c525d842 CY |
4305 | { |
4306 | start_display (&it, w, start); | |
4307 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 4308 | window_scroll_pixel_based_preserve_y = it.current_y; |
c876b227 | 4309 | window_scroll_pixel_based_preserve_x = it.current_x; |
c525d842 | 4310 | } |
5500c422 GM |
4311 | } |
4312 | else | |
c876b227 SM |
4313 | window_scroll_pixel_based_preserve_y |
4314 | = window_scroll_pixel_based_preserve_x = -1; | |
5500c422 GM |
4315 | |
4316 | /* Move iterator it from start the specified distance forward or | |
4317 | backward. The result is the new window start. */ | |
4318 | start_display (&it, w, start); | |
4319 | if (whole) | |
4320 | { | |
2452438f | 4321 | EMACS_INT start_pos = IT_CHARPOS (it); |
e856c216 KS |
4322 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); |
4323 | dy = max ((window_box_height (w) | |
4324 | - next_screen_context_lines * dy), | |
4325 | dy) * n; | |
d72340d4 GM |
4326 | |
4327 | /* Note that move_it_vertically always moves the iterator to the | |
4328 | start of a line. So, if the last line doesn't have a newline, | |
4329 | we would end up at the start of the line ending at ZV. */ | |
4330 | if (dy <= 0) | |
e856c216 KS |
4331 | { |
4332 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 4333 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
4334 | looking at an image that is taller that the window height. */ |
4335 | while (start_pos == IT_CHARPOS (it) | |
4336 | && start_pos > BEGV) | |
e4cc2dfc | 4337 | move_it_by_lines (&it, -1); |
e856c216 | 4338 | } |
d72340d4 | 4339 | else if (dy > 0) |
bed83ee4 | 4340 | { |
bed83ee4 KS |
4341 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
4342 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 4343 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
4344 | looking at an image that is taller that the window height. */ |
4345 | while (start_pos == IT_CHARPOS (it) | |
4346 | && start_pos < ZV) | |
e4cc2dfc | 4347 | move_it_by_lines (&it, 1); |
bed83ee4 | 4348 | } |
5500c422 GM |
4349 | } |
4350 | else | |
e4cc2dfc | 4351 | move_it_by_lines (&it, n); |
5500c422 | 4352 | |
96ae58c8 RS |
4353 | /* We failed if we find ZV is already on the screen (scrolling up, |
4354 | means there's nothing past the end), or if we can't start any | |
4355 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 4356 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 4357 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 4358 | { |
5cdb3cf3 MB |
4359 | if (IT_CHARPOS (it) == ZV) |
4360 | { | |
07ce8b53 RS |
4361 | if (it.current_y < it.last_visible_y |
4362 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 4363 | > it.last_visible_y)) |
a74eca50 GM |
4364 | { |
4365 | /* The last line was only partially visible, make it fully | |
4366 | visible. */ | |
4367 | w->vscroll = (it.last_visible_y | |
4368 | - it.current_y + it.max_ascent + it.max_descent); | |
4369 | adjust_glyphs (it.f); | |
4370 | } | |
5cdb3cf3 | 4371 | else |
57b3e30b | 4372 | { |
35928349 | 4373 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
4374 | if (noerror) |
4375 | return; | |
4376 | else if (n < 0) /* could happen with empty buffers */ | |
4377 | xsignal0 (Qbeginning_of_buffer); | |
4378 | else | |
4379 | xsignal0 (Qend_of_buffer); | |
4380 | } | |
5cdb3cf3 | 4381 | } |
5500c422 | 4382 | else |
5cdb3cf3 MB |
4383 | { |
4384 | if (w->vscroll != 0) | |
4385 | /* The first line was only partially visible, make it fully | |
4386 | visible. */ | |
4387 | w->vscroll = 0; | |
5cdb3cf3 | 4388 | else |
57b3e30b | 4389 | { |
35928349 | 4390 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
4391 | if (noerror) |
4392 | return; | |
4393 | else | |
4394 | xsignal0 (Qbeginning_of_buffer); | |
4395 | } | |
5cdb3cf3 MB |
4396 | } |
4397 | ||
4398 | /* If control gets here, then we vscrolled. */ | |
4399 | ||
4400 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
4401 | ||
4402 | /* Don't try to change the window start below. */ | |
4403 | vscrolled = 1; | |
5500c422 GM |
4404 | } |
4405 | ||
5cdb3cf3 MB |
4406 | if (! vscrolled) |
4407 | { | |
2452438f EZ |
4408 | EMACS_INT pos = IT_CHARPOS (it); |
4409 | EMACS_INT bytepos; | |
e68def1e AS |
4410 | |
4411 | /* If in the middle of a multi-glyph character move forward to | |
4412 | the next character. */ | |
4413 | if (in_display_vector_p (&it)) | |
4414 | { | |
4415 | ++pos; | |
4416 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
4417 | } | |
4418 | ||
5cdb3cf3 | 4419 | /* Set the window start, and set up the window for redisplay. */ |
dad67609 | 4420 | set_marker_restricted (w->start, make_number (pos), |
5cdb3cf3 | 4421 | w->buffer); |
dad67609 RS |
4422 | bytepos = XMARKER (w->start)->bytepos; |
4423 | w->start_at_line_beg = ((pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n') | |
4424 | ? Qt : Qnil); | |
5cdb3cf3 MB |
4425 | w->update_mode_line = Qt; |
4426 | XSETFASTINT (w->last_modified, 0); | |
4427 | XSETFASTINT (w->last_overlay_modified, 0); | |
4428 | /* Set force_start so that redisplay_window will run the | |
4429 | window-scroll-functions. */ | |
4430 | w->force_start = Qt; | |
4431 | } | |
177c0ea7 | 4432 | |
dc297565 RS |
4433 | /* The rest of this function uses current_y in a nonstandard way, |
4434 | not including the height of the header line if any. */ | |
5500c422 | 4435 | it.current_y = it.vpos = 0; |
177c0ea7 | 4436 | |
940f53e5 RS |
4437 | /* Move PT out of scroll margins. |
4438 | This code wants current_y to be zero at the window start position | |
4439 | even if there is a header line. */ | |
4440 | this_scroll_margin = max (0, scroll_margin); | |
4441 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); | |
4442 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); | |
4443 | ||
4444 | if (n > 0) | |
5500c422 | 4445 | { |
940f53e5 RS |
4446 | /* We moved the window start towards ZV, so PT may be now |
4447 | in the scroll margin at the top. */ | |
4448 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
4449 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
4450 | && (NILP (Vscroll_preserve_screen_position) | |
4451 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4452 | /* We found PT at a legitimate height. Leave it alone. */ |
4453 | ; | |
66fe93d1 | 4454 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4455 | { |
fa3c3426 RS |
4456 | /* If we have a header line, take account of it. |
4457 | This is necessary because we set it.current_y to 0, above. */ | |
c876b227 SM |
4458 | move_it_to (&it, -1, |
4459 | window_scroll_pixel_based_preserve_x, | |
66fe93d1 LT |
4460 | window_scroll_pixel_based_preserve_y |
4461 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c876b227 | 4462 | -1, MOVE_TO_Y | MOVE_TO_X); |
940f53e5 RS |
4463 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4464 | } | |
4465 | else | |
5500c422 | 4466 | { |
5500c422 | 4467 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
4468 | { |
4469 | int prev = it.current_y; | |
e4cc2dfc | 4470 | move_it_by_lines (&it, 1); |
e9b2c961 RS |
4471 | if (prev == it.current_y) |
4472 | break; | |
4473 | } | |
5500c422 GM |
4474 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4475 | } | |
940f53e5 RS |
4476 | } |
4477 | else if (n < 0) | |
4478 | { | |
2452438f | 4479 | EMACS_INT charpos, bytepos; |
aed328bf | 4480 | int partial_p; |
940f53e5 | 4481 | |
66fe93d1 LT |
4482 | /* Save our position, for the |
4483 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
4484 | charpos = IT_CHARPOS (it); |
4485 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 4486 | |
940f53e5 RS |
4487 | /* We moved the window start towards BEGV, so PT may be now |
4488 | in the scroll margin at the bottom. */ | |
4489 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
4490 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
4491 | - this_scroll_margin - 1), | |
4492 | -1, | |
940f53e5 RS |
4493 | MOVE_TO_POS | MOVE_TO_Y); |
4494 | ||
aed328bf KS |
4495 | /* Save our position, in case it's correct. */ |
4496 | charpos = IT_CHARPOS (it); | |
4497 | bytepos = IT_BYTEPOS (it); | |
4498 | ||
4499 | /* See if point is on a partially visible line at the end. */ | |
4500 | if (it.what == IT_EOB) | |
4501 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
4502 | else | |
4503 | { | |
e4cc2dfc | 4504 | move_it_by_lines (&it, 1); |
aed328bf KS |
4505 | partial_p = it.current_y > it.last_visible_y; |
4506 | } | |
4507 | ||
bdf4ec93 RS |
4508 | if (charpos == PT && !partial_p |
4509 | && (NILP (Vscroll_preserve_screen_position) | |
4510 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4511 | /* We found PT before we found the display margin, so PT is ok. */ |
4512 | ; | |
66fe93d1 | 4513 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 RS |
4514 | { |
4515 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
4516 | start_display (&it, w, start); | |
c525d842 CY |
4517 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
4518 | here because we called start_display again and did not | |
4519 | alter it.current_y this time. */ | |
c876b227 SM |
4520 | move_it_to (&it, -1, window_scroll_pixel_based_preserve_x, |
4521 | window_scroll_pixel_based_preserve_y, -1, | |
4522 | MOVE_TO_Y | MOVE_TO_X); | |
940f53e5 RS |
4523 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4524 | } | |
4525 | else | |
4526 | { | |
aed328bf | 4527 | if (partial_p) |
5cdb3cf3 MB |
4528 | /* The last line was only partially visible, so back up two |
4529 | lines to make sure we're on a fully visible line. */ | |
4530 | { | |
e4cc2dfc | 4531 | move_it_by_lines (&it, -2); |
5cdb3cf3 MB |
4532 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4533 | } | |
4534 | else | |
4535 | /* No, the position we saved is OK, so use it. */ | |
4536 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
4537 | } |
4538 | } | |
35928349 | 4539 | bidi_unshelve_cache (itdata, 0); |
5500c422 GM |
4540 | } |
4541 | ||
4542 | ||
4543 | /* Implementation of window_scroll that works based on screen lines. | |
4544 | See the comment of window_scroll for parameter descriptions. */ | |
4545 | ||
4546 | static void | |
971de7fb | 4547 | window_scroll_line_based (Lisp_Object window, int n, int whole, int noerror) |
7ab12479 JB |
4548 | { |
4549 | register struct window *w = XWINDOW (window); | |
03ab8921 EZ |
4550 | /* Fvertical_motion enters redisplay, which can trigger |
4551 | fontification, which in turn can modify buffer text (e.g., if the | |
4552 | fontification functions replace escape sequences with faces, as | |
4553 | in `grep-mode-font-lock-keywords'). So we use a marker to record | |
4554 | the old point position, to prevent crashes in SET_PT_BOTH. */ | |
4555 | Lisp_Object opoint_marker = Fpoint_marker (); | |
2452438f | 4556 | register EMACS_INT pos, pos_byte; |
7ab12479 JB |
4557 | register int ht = window_internal_height (w); |
4558 | register Lisp_Object tem; | |
4559 | int lose; | |
5500c422 | 4560 | Lisp_Object bolp; |
2452438f | 4561 | EMACS_INT startpos; |
c876b227 | 4562 | Lisp_Object original_pos = Qnil; |
101d1605 | 4563 | |
d4e7cf01 GM |
4564 | /* If scrolling screen-fulls, compute the number of lines to |
4565 | scroll from the window's height. */ | |
4566 | if (whole) | |
4567 | n *= max (1, ht - next_screen_context_lines); | |
4568 | ||
101d1605 RS |
4569 | startpos = marker_position (w->start); |
4570 | ||
c876b227 SM |
4571 | if (!NILP (Vscroll_preserve_screen_position)) |
4572 | { | |
4573 | if (window_scroll_preserve_vpos <= 0 | |
1344aad4 TT |
4574 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4575 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c876b227 SM |
4576 | { |
4577 | struct position posit | |
4578 | = *compute_motion (startpos, 0, 0, 0, | |
4579 | PT, ht, 0, | |
4580 | -1, XINT (w->hscroll), | |
4581 | 0, w); | |
4582 | window_scroll_preserve_vpos = posit.vpos; | |
4583 | window_scroll_preserve_hpos = posit.hpos + XINT (w->hscroll); | |
4584 | } | |
4585 | ||
4586 | original_pos = Fcons (make_number (window_scroll_preserve_hpos), | |
4587 | make_number (window_scroll_preserve_vpos)); | |
4588 | } | |
0a1f771a | 4589 | |
d834a2e9 | 4590 | XSETFASTINT (tem, PT); |
6ffdb539 | 4591 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 4592 | |
265a9e55 | 4593 | if (NILP (tem)) |
7ab12479 | 4594 | { |
cd2be1dd | 4595 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 4596 | startpos = PT; |
7ab12479 JB |
4597 | } |
4598 | ||
345d45b2 | 4599 | SET_PT (startpos); |
5ce7b543 | 4600 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 4601 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 4602 | pos = PT; |
b73ea88e | 4603 | pos_byte = PT_BYTE; |
7ab12479 | 4604 | bolp = Fbolp (); |
03ab8921 EZ |
4605 | SET_PT_BOTH (marker_position (opoint_marker), |
4606 | marker_byte_position (opoint_marker)); | |
7ab12479 JB |
4607 | |
4608 | if (lose) | |
f8026fd8 JB |
4609 | { |
4610 | if (noerror) | |
4611 | return; | |
4612 | else | |
ba96a5cf | 4613 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 4614 | } |
7ab12479 JB |
4615 | |
4616 | if (pos < ZV) | |
7ab12479 | 4617 | { |
0c7da84e | 4618 | /* Don't use a scroll margin that is negative or too large. */ |
71f02bc5 PE |
4619 | int this_scroll_margin = |
4620 | max (0, min (scroll_margin, XINT (w->total_lines) / 4)); | |
0c7da84e | 4621 | |
b73ea88e | 4622 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
4623 | w->start_at_line_beg = bolp; |
4624 | w->update_mode_line = Qt; | |
d834a2e9 | 4625 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 4626 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
4627 | /* Set force_start so that redisplay_window will run |
4628 | the window-scroll-functions. */ | |
4629 | w->force_start = Qt; | |
0c7da84e | 4630 | |
bdf4ec93 RS |
4631 | if (!NILP (Vscroll_preserve_screen_position) |
4632 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 4633 | { |
b73ea88e | 4634 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4635 | Fvertical_motion (original_pos, window); |
0c7da84e | 4636 | } |
101d1605 RS |
4637 | /* If we scrolled forward, put point enough lines down |
4638 | that it is outside the scroll margin. */ | |
4639 | else if (n > 0) | |
0c7da84e | 4640 | { |
101d1605 RS |
4641 | int top_margin; |
4642 | ||
4643 | if (this_scroll_margin > 0) | |
4644 | { | |
b73ea88e | 4645 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4646 | Fvertical_motion (make_number (this_scroll_margin), window); |
4647 | top_margin = PT; | |
4648 | } | |
4649 | else | |
4650 | top_margin = pos; | |
4651 | ||
03ab8921 EZ |
4652 | if (top_margin <= marker_position (opoint_marker)) |
4653 | SET_PT_BOTH (marker_position (opoint_marker), | |
4654 | marker_byte_position (opoint_marker)); | |
5500c422 | 4655 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 4656 | { |
b73ea88e | 4657 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4658 | Fvertical_motion (original_pos, window); |
101d1605 | 4659 | } |
9317a85d | 4660 | else |
335406fc | 4661 | SET_PT (top_margin); |
0c7da84e | 4662 | } |
101d1605 | 4663 | else if (n < 0) |
7ab12479 | 4664 | { |
101d1605 RS |
4665 | int bottom_margin; |
4666 | ||
0c7da84e RS |
4667 | /* If we scrolled backward, put point near the end of the window |
4668 | but not within the scroll margin. */ | |
b73ea88e | 4669 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 4670 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
4671 | if (XFASTINT (tem) == ht - this_scroll_margin) |
4672 | bottom_margin = PT; | |
4673 | else | |
4674 | bottom_margin = PT + 1; | |
4675 | ||
03ab8921 EZ |
4676 | if (bottom_margin > marker_position (opoint_marker)) |
4677 | SET_PT_BOTH (marker_position (opoint_marker), | |
4678 | marker_byte_position (opoint_marker)); | |
7ab12479 | 4679 | else |
101d1605 | 4680 | { |
5500c422 | 4681 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 4682 | { |
b73ea88e | 4683 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4684 | Fvertical_motion (original_pos, window); |
9317a85d RS |
4685 | } |
4686 | else | |
4687 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 4688 | } |
7ab12479 JB |
4689 | } |
4690 | } | |
4691 | else | |
f8026fd8 JB |
4692 | { |
4693 | if (noerror) | |
4694 | return; | |
4695 | else | |
ba96a5cf | 4696 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 4697 | } |
7ab12479 | 4698 | } |
5500c422 GM |
4699 | |
4700 | ||
4701 | /* Scroll selected_window up or down. If N is nil, scroll a | |
4702 | screen-full which is defined as the height of the window minus | |
4703 | next_screen_context_lines. If N is the symbol `-', scroll. | |
4704 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
4705 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
4706 | |
4707 | static void | |
971de7fb | 4708 | scroll_command (Lisp_Object n, int direction) |
7ab12479 | 4709 | { |
331379bf | 4710 | int count = SPECPDL_INDEX (); |
7ab12479 | 4711 | |
1ea40aa2 | 4712 | xassert (eabs (direction) == 1); |
5500c422 GM |
4713 | |
4714 | /* If selected window's buffer isn't current, make it current for | |
4715 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 4716 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
4717 | { |
4718 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
4719 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
4720 | |
4721 | /* Make redisplay consider other windows than just selected_window. */ | |
4722 | ++windows_or_buffers_changed; | |
95605e15 | 4723 | } |
7ab12479 | 4724 | |
265a9e55 | 4725 | if (NILP (n)) |
d4e7cf01 | 4726 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 4727 | else if (EQ (n, Qminus)) |
d4e7cf01 | 4728 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
4729 | else |
4730 | { | |
4731 | n = Fprefix_numeric_value (n); | |
101d1605 | 4732 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 4733 | } |
95605e15 JB |
4734 | |
4735 | unbind_to (count, Qnil); | |
7ab12479 JB |
4736 | } |
4737 | ||
e0965597 | 4738 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
12bb3111 | 4739 | doc: /* Scroll text of selected window upward ARG lines. |
a0a37a6f | 4740 | If ARG is omitted or nil, scroll upward by a near full screen. |
fdb82f93 PJ |
4741 | A near full screen is `next-screen-context-lines' less than a full screen. |
4742 | Negative ARG means scroll downward. | |
4743 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4744 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4745 | (Lisp_Object arg) |
7ab12479 | 4746 | { |
413430c5 | 4747 | scroll_command (arg, 1); |
7ab12479 JB |
4748 | return Qnil; |
4749 | } | |
4750 | ||
e0965597 | 4751 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
12bb3111 | 4752 | doc: /* Scroll text of selected window down ARG lines. |
a0a37a6f | 4753 | If ARG is omitted or nil, scroll down by a near full screen. |
fdb82f93 PJ |
4754 | A near full screen is `next-screen-context-lines' less than a full screen. |
4755 | Negative ARG means scroll upward. | |
4756 | If ARG is the atom `-', scroll upward by nearly full screen. | |
4757 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4758 | (Lisp_Object arg) |
7ab12479 | 4759 | { |
413430c5 | 4760 | scroll_command (arg, -1); |
7ab12479 JB |
4761 | return Qnil; |
4762 | } | |
ccd0664b RS |
4763 | \f |
4764 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 4765 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 4766 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
4767 | showing that buffer is used. |
4768 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4769 | specifies the window. This takes precedence over | |
4770 | `other-window-scroll-buffer'. */) | |
5842a27b | 4771 | (void) |
7ab12479 | 4772 | { |
ccd0664b | 4773 | Lisp_Object window; |
7ab12479 JB |
4774 | |
4775 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 4776 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
4777 | window = Vminibuf_scroll_window; |
4778 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 4779 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
4780 | { |
4781 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 4782 | if (NILP (window)) |
87478b52 | 4783 | window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
4784 | } |
4785 | else | |
dbc4e1c1 JB |
4786 | { |
4787 | /* Nothing specified; look for a neighboring window on the same | |
4788 | frame. */ | |
4789 | window = Fnext_window (selected_window, Qnil, Qnil); | |
4790 | ||
4791 | if (EQ (window, selected_window)) | |
4792 | /* That didn't get us anywhere; look for a window on another | |
4793 | visible frame. */ | |
4794 | do | |
4795 | window = Fnext_window (window, Qnil, Qt); | |
4796 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
4797 | && ! EQ (window, selected_window)); | |
4798 | } | |
4799 | ||
b7826503 | 4800 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
4801 | |
4802 | if (EQ (window, selected_window)) | |
4803 | error ("There is no other window"); | |
4804 | ||
ccd0664b RS |
4805 | return window; |
4806 | } | |
4807 | ||
4808 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
4809 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
4810 | A near full screen is `next-screen-context-lines' less than a full screen. | |
4811 | The next window is the one below the current one; or the one at the top | |
4812 | if the current one is at the bottom. Negative ARG means scroll downward. | |
4813 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4814 | When calling from a program, supply as argument a number, nil, or `-'. | |
4815 | ||
fdb82f93 | 4816 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
4817 | showing that buffer, popping the buffer up if necessary. |
4818 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4819 | specifies the window to scroll. This takes precedence over | |
4820 | `other-window-scroll-buffer'. */) | |
5842a27b | 4821 | (Lisp_Object arg) |
ccd0664b | 4822 | { |
d4e7cf01 GM |
4823 | Lisp_Object window; |
4824 | struct window *w; | |
331379bf | 4825 | int count = SPECPDL_INDEX (); |
ccd0664b RS |
4826 | |
4827 | window = Fother_window_for_scrolling (); | |
7ab12479 | 4828 | w = XWINDOW (window); |
7ab12479 JB |
4829 | |
4830 | /* Don't screw up if window_scroll gets an error. */ | |
4831 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 4832 | ++windows_or_buffers_changed; |
7ab12479 JB |
4833 | |
4834 | Fset_buffer (w->buffer); | |
4835 | SET_PT (marker_position (w->pointm)); | |
4836 | ||
413430c5 | 4837 | if (NILP (arg)) |
d4e7cf01 | 4838 | window_scroll (window, 1, 1, 1); |
413430c5 | 4839 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 4840 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
4841 | else |
4842 | { | |
413430c5 EN |
4843 | if (CONSP (arg)) |
4844 | arg = Fcar (arg); | |
b7826503 | 4845 | CHECK_NUMBER (arg); |
101d1605 | 4846 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
4847 | } |
4848 | ||
b73ea88e | 4849 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 4850 | unbind_to (count, Qnil); |
7ab12479 JB |
4851 | |
4852 | return Qnil; | |
4853 | } | |
4854 | \f | |
e0965597 | 4855 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 4856 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
4857 | Default for ARG is window width minus 2. |
4858 | Value is the total amount of leftward horizontal scrolling in | |
4859 | effect after the change. | |
23fe745a | 4860 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 4861 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 4862 | will not scroll a window to a column less than the value returned |
dc297565 | 4863 | by this function. This happens in an interactive call. */) |
5842a27b | 4864 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 4865 | { |
c67fa410 GM |
4866 | Lisp_Object result; |
4867 | int hscroll; | |
4868 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 4869 | |
265a9e55 | 4870 | if (NILP (arg)) |
abde8f8c | 4871 | XSETFASTINT (arg, window_body_cols (w) - 2); |
7ab12479 JB |
4872 | else |
4873 | arg = Fprefix_numeric_value (arg); | |
4874 | ||
c67fa410 GM |
4875 | hscroll = XINT (w->hscroll) + XINT (arg); |
4876 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
4877 | ||
dc297565 | 4878 | if (!NILP (set_minimum)) |
c67fa410 GM |
4879 | w->min_hscroll = w->hscroll; |
4880 | ||
4881 | return result; | |
7ab12479 JB |
4882 | } |
4883 | ||
e0965597 | 4884 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 4885 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
4886 | Default for ARG is window width minus 2. |
4887 | Value is the total amount of leftward horizontal scrolling in | |
4888 | effect after the change. | |
23fe745a | 4889 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 4890 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 4891 | will not scroll a window to a column less than the value returned |
dc297565 | 4892 | by this function. This happens in an interactive call. */) |
5842a27b | 4893 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 4894 | { |
c67fa410 GM |
4895 | Lisp_Object result; |
4896 | int hscroll; | |
4897 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 4898 | |
265a9e55 | 4899 | if (NILP (arg)) |
abde8f8c | 4900 | XSETFASTINT (arg, window_body_cols (w) - 2); |
7ab12479 JB |
4901 | else |
4902 | arg = Fprefix_numeric_value (arg); | |
4903 | ||
c67fa410 GM |
4904 | hscroll = XINT (w->hscroll) - XINT (arg); |
4905 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
177c0ea7 | 4906 | |
dc297565 | 4907 | if (!NILP (set_minimum)) |
c67fa410 GM |
4908 | w->min_hscroll = w->hscroll; |
4909 | ||
4910 | return result; | |
7ab12479 JB |
4911 | } |
4912 | ||
fa832261 KS |
4913 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
4914 | doc: /* Return the window which was selected when entering the minibuffer. | |
12bb3111 | 4915 | Returns nil, if selected window is not a minibuffer window. */) |
5842a27b | 4916 | (void) |
fa832261 KS |
4917 | { |
4918 | if (minibuf_level > 0 | |
4919 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
4920 | && WINDOW_LIVE_P (minibuf_selected_window)) |
4921 | return minibuf_selected_window; | |
4922 | ||
4923 | return Qnil; | |
4924 | } | |
4925 | ||
12c8b416 GM |
4926 | /* Value is the number of lines actually displayed in window W, |
4927 | as opposed to its height. */ | |
4928 | ||
4929 | static int | |
971de7fb | 4930 | displayed_window_lines (struct window *w) |
12c8b416 GM |
4931 | { |
4932 | struct it it; | |
4933 | struct text_pos start; | |
4934 | int height = window_box_height (w); | |
4935 | struct buffer *old_buffer; | |
4936 | int bottom_y; | |
57b3e30b | 4937 | void *itdata = NULL; |
12c8b416 GM |
4938 | |
4939 | if (XBUFFER (w->buffer) != current_buffer) | |
4940 | { | |
4941 | old_buffer = current_buffer; | |
4942 | set_buffer_internal (XBUFFER (w->buffer)); | |
4943 | } | |
4944 | else | |
4945 | old_buffer = NULL; | |
4946 | ||
521b203e GM |
4947 | /* In case W->start is out of the accessible range, do something |
4948 | reasonable. This happens in Info mode when Info-scroll-down | |
4949 | calls (recenter -1) while W->start is 1. */ | |
4950 | if (XMARKER (w->start)->charpos < BEGV) | |
4951 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
4952 | else if (XMARKER (w->start)->charpos > ZV) | |
4953 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
4954 | else | |
4955 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
4956 | ||
57b3e30b | 4957 | itdata = bidi_shelve_cache (); |
12c8b416 GM |
4958 | start_display (&it, w, start); |
4959 | move_it_vertically (&it, height); | |
c8bc6f65 | 4960 | bottom_y = line_bottom_y (&it); |
35928349 | 4961 | bidi_unshelve_cache (itdata, 0); |
12c8b416 | 4962 | |
1de65f51 RS |
4963 | /* rms: On a non-window display, |
4964 | the value of it.vpos at the bottom of the screen | |
4965 | seems to be 1 larger than window_box_height (w). | |
4966 | This kludge fixes a bug whereby (move-to-window-line -1) | |
4967 | when ZV is on the last screen line | |
4968 | moves to the previous screen line instead of the last one. */ | |
4969 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) | |
4970 | height++; | |
4971 | ||
12c8b416 GM |
4972 | /* Add in empty lines at the bottom of the window. */ |
4973 | if (bottom_y < height) | |
4974 | { | |
949cf20f | 4975 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 4976 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
4977 | } |
4978 | ||
c8bc6f65 GM |
4979 | if (old_buffer) |
4980 | set_buffer_internal (old_buffer); | |
4981 | ||
12c8b416 GM |
4982 | return it.vpos; |
4983 | } | |
4984 | ||
4985 | ||
a7ca3326 | 4986 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
666e158e | 4987 | doc: /* Center point in selected window and maybe redisplay frame. |
fdb82f93 | 4988 | With prefix argument ARG, recenter putting point on screen line ARG |
12bb3111 | 4989 | relative to the selected window. If ARG is negative, it counts up from the |
fdb82f93 PJ |
4990 | bottom of the window. (ARG should be less than the height of the window.) |
4991 | ||
666e158e MB |
4992 | If ARG is omitted or nil, then recenter with point on the middle line of |
4993 | the selected window; if the variable `recenter-redisplay' is non-nil, | |
4994 | also erase the entire frame and redraw it (when `auto-resize-tool-bars' | |
4995 | is set to `grow-only', this resets the tool-bar's height to the minimum | |
4996 | height needed); if `recenter-redisplay' has the special value `tty', | |
4997 | then only tty frame are redrawn. | |
7d1d98ee | 4998 | |
fdb82f93 PJ |
4999 | Just C-u as prefix means put point in the center of the window |
5000 | and redisplay normally--don't erase and redraw the frame. */) | |
5842a27b | 5001 | (register Lisp_Object arg) |
7ab12479 | 5002 | { |
6df47b59 | 5003 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
5004 | struct buffer *buf = XBUFFER (w->buffer); |
5005 | struct buffer *obuf = current_buffer; | |
6df47b59 | 5006 | int center_p = 0; |
2452438f | 5007 | EMACS_INT charpos, bytepos; |
71f02bc5 | 5008 | EMACS_INT iarg IF_LINT (= 0); |
f6b43440 | 5009 | int this_scroll_margin; |
7ab12479 | 5010 | |
0fa5d25b RS |
5011 | /* If redisplay is suppressed due to an error, try again. */ |
5012 | obuf->display_error_modiff = 0; | |
5013 | ||
413430c5 | 5014 | if (NILP (arg)) |
7ab12479 | 5015 | { |
666e158e MB |
5016 | if (!NILP (Vrecenter_redisplay) |
5017 | && (!EQ (Vrecenter_redisplay, Qtty) | |
5018 | || !NILP (Ftty_type (selected_frame)))) | |
5019 | { | |
ebfa62c0 | 5020 | ptrdiff_t i; |
f02d6d5c | 5021 | |
666e158e MB |
5022 | /* Invalidate pixel data calculated for all compositions. */ |
5023 | for (i = 0; i < n_compositions; i++) | |
5024 | composition_table[i]->font = NULL; | |
7ab12479 | 5025 | |
666e158e MB |
5026 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5027 | ||
5028 | Fredraw_frame (WINDOW_FRAME (w)); | |
5029 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
5030 | } | |
7d1d98ee | 5031 | |
6df47b59 | 5032 | center_p = 1; |
7ab12479 | 5033 | } |
413430c5 | 5034 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5035 | center_p = 1; |
7ab12479 JB |
5036 | else |
5037 | { | |
413430c5 | 5038 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5039 | CHECK_NUMBER (arg); |
ae12ecd7 | 5040 | iarg = XINT (arg); |
7ab12479 JB |
5041 | } |
5042 | ||
478292ed | 5043 | set_buffer_internal (buf); |
7ab12479 | 5044 | |
f6b43440 RS |
5045 | /* Do this after making BUF current |
5046 | in case scroll_margin is buffer-local. */ | |
71f02bc5 PE |
5047 | this_scroll_margin = |
5048 | max (0, min (scroll_margin, XFASTINT (w->total_lines) / 4)); | |
f6b43440 | 5049 | |
521b203e | 5050 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5051 | have variable-height lines and centering point on the basis of |
5052 | line counts would lead to strange effects. */ | |
521b203e | 5053 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5054 | { |
6df47b59 GM |
5055 | if (center_p) |
5056 | { | |
521b203e GM |
5057 | struct it it; |
5058 | struct text_pos pt; | |
57b3e30b | 5059 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5060 | |
521b203e GM |
5061 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5062 | start_display (&it, w, pt); | |
f204989e | 5063 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5064 | charpos = IT_CHARPOS (it); |
5065 | bytepos = IT_BYTEPOS (it); | |
35928349 | 5066 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5067 | } |
f6b43440 | 5068 | else if (iarg < 0) |
6df47b59 | 5069 | { |
521b203e GM |
5070 | struct it it; |
5071 | struct text_pos pt; | |
71f02bc5 | 5072 | int nlines = min (INT_MAX, -iarg); |
f204989e KS |
5073 | int extra_line_spacing; |
5074 | int h = window_box_height (w); | |
57b3e30b | 5075 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5076 | |
f6b43440 RS |
5077 | iarg = - max (-iarg, this_scroll_margin); |
5078 | ||
521b203e GM |
5079 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5080 | start_display (&it, w, pt); | |
f204989e KS |
5081 | |
5082 | /* Be sure we have the exact height of the full line containing PT. */ | |
e4cc2dfc | 5083 | move_it_by_lines (&it, 0); |
521b203e | 5084 | |
d466fa4d | 5085 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5086 | height minus what's displayed in the line containing PT, |
5087 | and the lines below. */ | |
f204989e KS |
5088 | it.current_y = 0; |
5089 | it.vpos = 0; | |
e4cc2dfc | 5090 | move_it_by_lines (&it, nlines); |
d466fa4d | 5091 | |
f204989e KS |
5092 | if (it.vpos == nlines) |
5093 | h -= it.current_y; | |
5094 | else | |
5095 | { | |
5096 | /* Last line has no newline */ | |
5097 | h -= line_bottom_y (&it); | |
5098 | it.vpos++; | |
5099 | } | |
5100 | ||
5101 | /* Don't reserve space for extra line spacing of last line. */ | |
5102 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5103 | |
5104 | /* If we can't move down NLINES lines because we hit | |
5105 | the end of the buffer, count in some empty lines. */ | |
5106 | if (it.vpos < nlines) | |
f204989e KS |
5107 | { |
5108 | nlines -= it.vpos; | |
5109 | extra_line_spacing = it.extra_line_spacing; | |
5110 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5111 | } | |
5112 | if (h <= 0) | |
57b3e30b | 5113 | { |
35928349 | 5114 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
5115 | return Qnil; |
5116 | } | |
201c831a | 5117 | |
f204989e | 5118 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5119 | start_display (&it, w, pt); |
f204989e KS |
5120 | it.current_y = 0; |
5121 | move_it_vertically_backward (&it, h); | |
5122 | ||
5123 | /* If extra line spacing is present, we may move too far | |
5124 | back. This causes the last line to be only partially | |
5125 | visible (which triggers redisplay to recenter that line | |
5126 | in the middle), so move forward. | |
5127 | But ignore extra line spacing on last line, as it is not | |
5128 | considered to be part of the visible height of the line. | |
5129 | */ | |
5130 | h += extra_line_spacing; | |
5131 | while (-it.current_y > h) | |
e4cc2dfc | 5132 | move_it_by_lines (&it, 1); |
f204989e | 5133 | |
521b203e GM |
5134 | charpos = IT_CHARPOS (it); |
5135 | bytepos = IT_BYTEPOS (it); | |
57b3e30b | 5136 | |
35928349 | 5137 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5138 | } |
521b203e GM |
5139 | else |
5140 | { | |
5141 | struct position pos; | |
f6b43440 | 5142 | |
f6b43440 RS |
5143 | iarg = max (iarg, this_scroll_margin); |
5144 | ||
5145 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5146 | charpos = pos.bufpos; |
5147 | bytepos = pos.bytepos; | |
5148 | } | |
5149 | } | |
5150 | else | |
5151 | { | |
5152 | struct position pos; | |
5153 | int ht = window_internal_height (w); | |
5154 | ||
5155 | if (center_p) | |
a4429c5b | 5156 | iarg = ht / 2; |
f567c488 KS |
5157 | else if (iarg < 0) |
5158 | iarg += ht; | |
f6b43440 RS |
5159 | |
5160 | /* Don't let it get into the margin at either top or bottom. */ | |
5161 | iarg = max (iarg, this_scroll_margin); | |
5162 | iarg = min (iarg, ht - this_scroll_margin - 1); | |
177c0ea7 | 5163 | |
f6b43440 | 5164 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
5165 | charpos = pos.bufpos; |
5166 | bytepos = pos.bytepos; | |
5167 | } | |
5168 | ||
5169 | /* Set the new window start. */ | |
5170 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 5171 | w->window_end_valid = Qnil; |
177c0ea7 | 5172 | |
95605b1b RS |
5173 | w->optional_new_start = Qt; |
5174 | ||
6df47b59 GM |
5175 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
5176 | w->start_at_line_beg = Qt; | |
5177 | else | |
5178 | w->start_at_line_beg = Qnil; | |
177c0ea7 | 5179 | |
478292ed | 5180 | set_buffer_internal (obuf); |
7ab12479 JB |
5181 | return Qnil; |
5182 | } | |
b7617575 | 5183 | |
81fe0836 | 5184 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5185 | 0, 1, 0, |
5186 | doc: /* Return the height in lines of the text display area of WINDOW. | |
105216ed | 5187 | If WINDOW is omitted or nil, it defaults to the selected window. |
8fef9de1 | 5188 | |
105216ed CY |
5189 | The returned height does not include the mode line, any header line, |
5190 | nor any partial-height lines at the bottom of the text area. */) | |
5842a27b | 5191 | (Lisp_Object window) |
81fe0836 MB |
5192 | { |
5193 | struct window *w = decode_window (window); | |
5194 | int pixel_height = window_box_height (w); | |
949cf20f | 5195 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5196 | return make_number (line_height); |
5197 | } | |
5198 | ||
5199 | ||
7ab12479 JB |
5200 | \f |
5201 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5202 | 1, 1, "P", |
5203 | doc: /* Position point relative to window. | |
87e68db4 JB |
5204 | ARG nil means position point at center of window. |
5205 | Else, ARG specifies vertical position within the window; | |
fdb82f93 | 5206 | zero means top of window, negative means relative to bottom of window. */) |
5842a27b | 5207 | (Lisp_Object arg) |
7ab12479 | 5208 | { |
b7617575 GM |
5209 | struct window *w = XWINDOW (selected_window); |
5210 | int lines, start; | |
540b6aa0 | 5211 | Lisp_Object window; |
f6b43440 RS |
5212 | #if 0 |
5213 | int this_scroll_margin; | |
5214 | #endif | |
7ab12479 | 5215 | |
794b75c7 SM |
5216 | if (!(BUFFERP (w->buffer) |
5217 | && XBUFFER (w->buffer) == current_buffer)) | |
5218 | /* This test is needed to make sure PT/PT_BYTE make sense in w->buffer | |
5219 | when passed below to set_marker_both. */ | |
5220 | error ("move-to-window-line called from unrelated buffer"); | |
6dc1d2d3 | 5221 | |
b7617575 | 5222 | window = selected_window; |
7ab12479 JB |
5223 | start = marker_position (w->start); |
5224 | if (start < BEGV || start > ZV) | |
5225 | { | |
b7617575 | 5226 | int height = window_internal_height (w); |
cd2be1dd | 5227 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 5228 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
5229 | w->start_at_line_beg = Fbolp (); |
5230 | w->force_start = Qt; | |
5231 | } | |
5232 | else | |
b73ea88e | 5233 | Fgoto_char (w->start); |
7ab12479 | 5234 | |
b7617575 | 5235 | lines = displayed_window_lines (w); |
f6b43440 RS |
5236 | |
5237 | #if 0 | |
71f02bc5 | 5238 | this_scroll_margin = max (0, min (scroll_margin, lines / 4)); |
f6b43440 RS |
5239 | #endif |
5240 | ||
b7617575 GM |
5241 | if (NILP (arg)) |
5242 | XSETFASTINT (arg, lines / 2); | |
5243 | else | |
5244 | { | |
71f02bc5 | 5245 | EMACS_INT iarg = XINT (Fprefix_numeric_value (arg)); |
f6b43440 RS |
5246 | |
5247 | if (iarg < 0) | |
5248 | iarg = iarg + lines; | |
5249 | ||
5250 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5251 | to a place inside the scroll margins (which would cause the | |
5252 | next redisplay to scroll). I wrote this code, but then concluded | |
5253 | it is probably better not to install it. However, it is here | |
5254 | inside #if 0 so as not to lose it. -- rms. */ | |
5255 | ||
5256 | /* Don't let it get into the margin at either top or bottom. */ | |
5257 | iarg = max (iarg, this_scroll_margin); | |
5258 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5259 | #endif | |
5260 | ||
5261 | arg = make_number (iarg); | |
b7617575 GM |
5262 | } |
5263 | ||
c8bc6f65 | 5264 | /* Skip past a partially visible first line. */ |
163784df | 5265 | if (w->vscroll) |
163784df MB |
5266 | XSETINT (arg, XINT (arg) + 1); |
5267 | ||
540b6aa0 | 5268 | return Fvertical_motion (arg, window); |
7ab12479 | 5269 | } |
5500c422 GM |
5270 | |
5271 | ||
7ab12479 | 5272 | \f |
5500c422 GM |
5273 | /*********************************************************************** |
5274 | Window Configuration | |
5275 | ***********************************************************************/ | |
5276 | ||
7ab12479 JB |
5277 | struct save_window_data |
5278 | { | |
b102ceb1 | 5279 | struct vectorlike_header header; |
bdc727bf | 5280 | Lisp_Object selected_frame; |
7ab12479 JB |
5281 | Lisp_Object current_window; |
5282 | Lisp_Object current_buffer; | |
5283 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5284 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5285 | Lisp_Object root_window; |
bdc727bf | 5286 | Lisp_Object focus_frame; |
cbff28e8 RS |
5287 | /* A vector, each of whose elements is a struct saved_window |
5288 | for one window. */ | |
7ab12479 | 5289 | Lisp_Object saved_windows; |
b05b4e27 SM |
5290 | |
5291 | /* All fields above are traced by the GC. | |
5292 | From `fame-cols' down, the fields are ignored by the GC. */ | |
5293 | ||
5294 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
5295 | int frame_tool_bar_lines; | |
7ab12479 | 5296 | }; |
ff06df24 | 5297 | |
cbff28e8 | 5298 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 5299 | struct saved_window |
ea68264b | 5300 | { |
b102ceb1 | 5301 | struct vectorlike_header header; |
496e208e | 5302 | |
28545e04 | 5303 | Lisp_Object window, buffer, start, pointm, mark; |
949cf20f | 5304 | Lisp_Object left_col, top_line, total_cols, total_lines; |
496e208e | 5305 | Lisp_Object normal_cols, normal_lines; |
949cf20f | 5306 | Lisp_Object hscroll, min_hscroll; |
ea68264b GM |
5307 | Lisp_Object parent, prev; |
5308 | Lisp_Object start_at_line_beg; | |
5309 | Lisp_Object display_table; | |
949cf20f KS |
5310 | Lisp_Object left_margin_cols, right_margin_cols; |
5311 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
562dd5e9 | 5312 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type, dedicated; |
b6f67890 | 5313 | Lisp_Object combination_limit, window_parameters; |
ea68264b GM |
5314 | }; |
5315 | ||
7ab12479 JB |
5316 | #define SAVED_WINDOW_N(swv,n) \ |
5317 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
5318 | ||
5319 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 | 5320 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5842a27b | 5321 | (Lisp_Object object) |
7ab12479 | 5322 | { |
6ad0381c | 5323 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
5324 | } |
5325 | ||
3f8ab7bd | 5326 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 | 5327 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5842a27b | 5328 | (Lisp_Object config) |
3f8ab7bd RS |
5329 | { |
5330 | register struct save_window_data *data; | |
5331 | struct Lisp_Vector *saved_windows; | |
5332 | ||
663fbbba | 5333 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
5334 | |
5335 | data = (struct save_window_data *) XVECTOR (config); | |
5336 | saved_windows = XVECTOR (data->saved_windows); | |
5337 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
5338 | } | |
5339 | ||
a7ca3326 | 5340 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
5341 | Sset_window_configuration, 1, 1, 0, |
5342 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
5343 | CONFIGURATION must be a value previously returned | |
5344 | by `current-window-configuration' (which see). | |
5345 | If CONFIGURATION was made from a frame that is now deleted, | |
5346 | only frame-independent values can be restored. In this case, | |
5347 | the return value is nil. Otherwise the value is t. */) | |
5842a27b | 5348 | (Lisp_Object configuration) |
7ab12479 | 5349 | { |
7ab12479 JB |
5350 | register struct save_window_data *data; |
5351 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 5352 | Lisp_Object new_current_buffer; |
fd482be5 | 5353 | Lisp_Object frame; |
6198ccd0 | 5354 | Lisp_Object auto_buffer_name; |
44fa5b1e | 5355 | FRAME_PTR f; |
2452438f | 5356 | EMACS_INT old_point = -1; |
7ab12479 | 5357 | |
663fbbba | 5358 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 5359 | |
2f83aebe | 5360 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
5361 | saved_windows = XVECTOR (data->saved_windows); |
5362 | ||
7ab12479 | 5363 | new_current_buffer = data->current_buffer; |
4b4deea2 | 5364 | if (NILP (BVAR (XBUFFER (new_current_buffer), name))) |
7ab12479 | 5365 | new_current_buffer = Qnil; |
72695e47 | 5366 | else |
73cadfc1 DK |
5367 | { |
5368 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
5369 | /* The code further down "preserves point" by saving here PT in |
5370 | old_point and then setting it later back into PT. When the | |
5371 | current-selected-window and the final-selected-window both show | |
5372 | the current buffer, this suffers from the problem that the | |
5373 | current PT is the window-point of the current-selected-window, | |
5374 | while the final PT is the point of the final-selected-window, so | |
5375 | this copy from one PT to the other would end up moving the | |
5376 | window-point of the final-selected-window to the window-point of | |
5377 | the current-selected-window. So we have to be careful which | |
5378 | point of the current-buffer we copy into old_point. */ | |
5379 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
5380 | && WINDOWP (selected_window) | |
5381 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) | |
5382 | && !EQ (selected_window, data->current_window)) | |
5383 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
5384 | else | |
5385 | old_point = PT; | |
73cadfc1 | 5386 | else |
203eb0aa SM |
5387 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
5388 | point in new_current_buffer as of the last time this buffer was | |
5389 | used. This can be non-deterministic since it can be changed by | |
5390 | things like jit-lock by mere temporary selection of some random | |
5391 | window that happens to show this buffer. | |
5392 | So if possible we want this arbitrary choice of "which point" to | |
5393 | be the one from the to-be-selected-window so as to prevent this | |
5394 | window's cursor from being copied from another window. */ | |
5395 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
5396 | /* If current_window = selected_window, its point is in BUF_PT. */ | |
5397 | && !EQ (selected_window, data->current_window)) | |
5398 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
5399 | else | |
5400 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 5401 | } |
7ab12479 | 5402 | |
fd482be5 JB |
5403 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
5404 | f = XFRAME (frame); | |
177c0ea7 | 5405 | |
fd482be5 JB |
5406 | /* If f is a dead frame, don't bother rebuilding its window tree. |
5407 | However, there is other stuff we should still try to do below. */ | |
5408 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 5409 | { |
6198ccd0 MR |
5410 | Lisp_Object window; |
5411 | Lisp_Object dead_windows = Qnil; | |
fd482be5 JB |
5412 | register struct window *w; |
5413 | register struct saved_window *p; | |
5500c422 GM |
5414 | struct window *root_window; |
5415 | struct window **leaf_windows; | |
5416 | int n_leaf_windows; | |
71f02bc5 PE |
5417 | ptrdiff_t k; |
5418 | int i, n; | |
fd482be5 JB |
5419 | |
5420 | /* If the frame has been resized since this window configuration was | |
5421 | made, we change the frame to the size specified in the | |
5422 | configuration, restore the configuration, and then resize it | |
5423 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
5424 | int previous_frame_lines = FRAME_LINES (f); |
5425 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 5426 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 5427 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 5428 | |
d2b35234 RS |
5429 | /* The mouse highlighting code could get screwed up |
5430 | if it runs during this. */ | |
5431 | BLOCK_INPUT; | |
5432 | ||
b05b4e27 SM |
5433 | if (data->frame_lines != previous_frame_lines |
5434 | || data->frame_cols != previous_frame_cols) | |
5435 | change_frame_size (f, data->frame_lines, | |
5436 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 5437 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 5438 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 5439 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
5440 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
5441 | make_number (0)); | |
4314246f | 5442 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 5443 | if (data->frame_tool_bar_lines |
9ea173e8 | 5444 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
5445 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
5446 | make_number (0)); | |
4314246f | 5447 | #endif |
217f2871 | 5448 | #endif |
fd482be5 | 5449 | |
a46c0153 RS |
5450 | /* "Swap out" point from the selected window's buffer |
5451 | into the window itself. (Normally the pointm of the selected | |
5452 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
5453 | restoring the window contents, and prevent it from |
5454 | being done later on when we select a new window. */ | |
596ae0cf RS |
5455 | if (! NILP (XWINDOW (selected_window)->buffer)) |
5456 | { | |
5457 | w = XWINDOW (selected_window); | |
5458 | set_marker_both (w->pointm, | |
5459 | w->buffer, | |
5460 | BUF_PT (XBUFFER (w->buffer)), | |
5461 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
5462 | } | |
5463 | ||
fd482be5 | 5464 | windows_or_buffers_changed++; |
29aeee73 | 5465 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 5466 | |
5500c422 | 5467 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 5468 | is a serious redisplay flickering problem. What we would |
5500c422 | 5469 | really like to do is to free only those matrices not reused |
9d14503e | 5470 | below. */ |
5500c422 GM |
5471 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); |
5472 | leaf_windows | |
5473 | = (struct window **) alloca (count_windows (root_window) | |
5474 | * sizeof (struct window *)); | |
5475 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
5476 | ||
fd482be5 JB |
5477 | /* Kludge Alert! |
5478 | Mark all windows now on frame as "deleted". | |
5479 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 5480 | |
fd482be5 JB |
5481 | Save their current buffers in their height fields, since we may |
5482 | need it later, if a buffer saved in the configuration is now | |
5483 | dead. */ | |
be7f5545 | 5484 | delete_all_child_windows (FRAME_ROOT_WINDOW (f)); |
fd482be5 | 5485 | |
eab3844f | 5486 | for (k = 0; k < saved_windows->header.size; k++) |
fd482be5 JB |
5487 | { |
5488 | p = SAVED_WINDOW_N (saved_windows, k); | |
6198ccd0 MR |
5489 | window = p->window; |
5490 | w = XWINDOW (window); | |
fd482be5 | 5491 | w->next = Qnil; |
7ab12479 | 5492 | |
fd482be5 JB |
5493 | if (!NILP (p->parent)) |
5494 | w->parent = SAVED_WINDOW_N (saved_windows, | |
5495 | XFASTINT (p->parent))->window; | |
5496 | else | |
5497 | w->parent = Qnil; | |
7ab12479 | 5498 | |
fd482be5 | 5499 | if (!NILP (p->prev)) |
7ab12479 | 5500 | { |
fd482be5 JB |
5501 | w->prev = SAVED_WINDOW_N (saved_windows, |
5502 | XFASTINT (p->prev))->window; | |
5503 | XWINDOW (w->prev)->next = p->window; | |
5504 | } | |
5505 | else | |
5506 | { | |
5507 | w->prev = Qnil; | |
5508 | if (!NILP (w->parent)) | |
5509 | { | |
949cf20f | 5510 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 JB |
5511 | { |
5512 | XWINDOW (w->parent)->vchild = p->window; | |
5513 | XWINDOW (w->parent)->hchild = Qnil; | |
5514 | } | |
5515 | else | |
5516 | { | |
5517 | XWINDOW (w->parent)->hchild = p->window; | |
5518 | XWINDOW (w->parent)->vchild = Qnil; | |
5519 | } | |
5520 | } | |
5521 | } | |
5522 | ||
5523 | /* If we squirreled away the buffer in the window's height, | |
5524 | restore it now. */ | |
949cf20f KS |
5525 | if (BUFFERP (w->total_lines)) |
5526 | w->buffer = w->total_lines; | |
5527 | w->left_col = p->left_col; | |
5528 | w->top_line = p->top_line; | |
5529 | w->total_cols = p->total_cols; | |
5530 | w->total_lines = p->total_lines; | |
496e208e MR |
5531 | w->normal_cols = p->normal_cols; |
5532 | w->normal_lines = p->normal_lines; | |
fd482be5 | 5533 | w->hscroll = p->hscroll; |
ea68264b | 5534 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 5535 | w->display_table = p->display_table; |
949cf20f KS |
5536 | w->left_margin_cols = p->left_margin_cols; |
5537 | w->right_margin_cols = p->right_margin_cols; | |
5538 | w->left_fringe_width = p->left_fringe_width; | |
5539 | w->right_fringe_width = p->right_fringe_width; | |
5540 | w->fringes_outside_margins = p->fringes_outside_margins; | |
5541 | w->scroll_bar_width = p->scroll_bar_width; | |
5542 | w->vertical_scroll_bar_type = p->vertical_scroll_bar_type; | |
6ad0381c | 5543 | w->dedicated = p->dedicated; |
b6f67890 | 5544 | w->combination_limit = p->combination_limit; |
496e208e | 5545 | w->window_parameters = p->window_parameters; |
d834a2e9 | 5546 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 5547 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
5548 | |
5549 | /* Reinstall the saved buffer and pointers into it. */ | |
5550 | if (NILP (p->buffer)) | |
6198ccd0 | 5551 | /* An internal window. */ |
fd482be5 | 5552 | w->buffer = p->buffer; |
6198ccd0 MR |
5553 | else if (!NILP (BVAR (XBUFFER (p->buffer), name))) |
5554 | /* If saved buffer is alive, install it. */ | |
5555 | { | |
5556 | w->buffer = p->buffer; | |
5557 | w->start_at_line_beg = p->start_at_line_beg; | |
5558 | set_marker_restricted (w->start, p->start, w->buffer); | |
5559 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
5560 | Fset_marker (BVAR (XBUFFER (w->buffer), mark), | |
5561 | p->mark, w->buffer); | |
5562 | ||
5563 | /* As documented in Fcurrent_window_configuration, don't | |
5564 | restore the location of point in the buffer which was | |
5565 | current when the window configuration was recorded. */ | |
5566 | if (!EQ (p->buffer, new_current_buffer) | |
5567 | && XBUFFER (p->buffer) == current_buffer) | |
5568 | Fgoto_char (w->pointm); | |
5569 | } | |
5570 | else if (!NILP (w->buffer) && !NILP (BVAR (XBUFFER (w->buffer), name))) | |
5571 | /* Keep window's old buffer; make sure the markers are | |
5572 | real. */ | |
5573 | { | |
5574 | /* Set window markers at start of visible range. */ | |
5575 | if (XMARKER (w->start)->buffer == 0) | |
5576 | set_marker_restricted (w->start, make_number (0), | |
5577 | w->buffer); | |
5578 | if (XMARKER (w->pointm)->buffer == 0) | |
5579 | set_marker_restricted_both (w->pointm, w->buffer, | |
5580 | BUF_PT (XBUFFER (w->buffer)), | |
5581 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
5582 | w->start_at_line_beg = Qt; | |
5583 | } | |
5584 | else if (STRINGP (auto_buffer_name = | |
5585 | Fwindow_parameter (window, Qauto_buffer_name)) | |
5586 | && SCHARS (auto_buffer_name) != 0 | |
5587 | && !NILP (w->buffer = Fget_buffer_create (auto_buffer_name))) | |
5588 | { | |
5589 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
5590 | set_marker_restricted (w->pointm, make_number (0), w->buffer); | |
5591 | w->start_at_line_beg = Qt; | |
5592 | } | |
fd482be5 | 5593 | else |
6198ccd0 | 5594 | /* Window has no live buffer, get one. */ |
fd482be5 | 5595 | { |
6198ccd0 MR |
5596 | /* Get the buffer via other_buffer_safely in order to |
5597 | avoid showing an unimportant buffer and, if necessary, to | |
5598 | recreate *scratch* in the course (part of Juanma's bs-show | |
5599 | scenario from March 2011). */ | |
5600 | w->buffer = other_buffer_safely (Fcurrent_buffer ()); | |
5601 | /* This will set the markers to beginning of visible | |
5602 | range. */ | |
5603 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
5604 | set_marker_restricted (w->pointm, make_number (0), w->buffer); | |
5605 | w->start_at_line_beg = Qt; | |
5606 | if (!NILP (w->dedicated)) | |
5607 | /* Record this window as dead. */ | |
5608 | dead_windows = Fcons (window, dead_windows); | |
5609 | /* Make sure window is no more dedicated. */ | |
5610 | w->dedicated = Qnil; | |
7ab12479 JB |
5611 | } |
5612 | } | |
9ace597f | 5613 | |
fd482be5 | 5614 | FRAME_ROOT_WINDOW (f) = data->root_window; |
a46c0153 RS |
5615 | /* Arrange *not* to restore point in the buffer that was |
5616 | current when the window configuration was saved. */ | |
243a5ce6 RS |
5617 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
5618 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 5619 | make_number (old_point), |
243a5ce6 | 5620 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 5621 | |
6198ccd0 MR |
5622 | /* In the following call to `select-window', prevent "swapping out |
5623 | point" in the old selected window using the buffer that has | |
5624 | been restored into it. We already swapped out that point from | |
5625 | that window's old buffer. */ | |
e6b84b30 | 5626 | select_window (data->current_window, Qnil, 1); |
4b4deea2 | 5627 | BVAR (XBUFFER (XWINDOW (selected_window)->buffer), last_selected_window) |
396a830c | 5628 | = selected_window; |
7ab12479 | 5629 | |
db269683 | 5630 | if (NILP (data->focus_frame) |
017b2bad | 5631 | || (FRAMEP (data->focus_frame) |
db269683 JB |
5632 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
5633 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 5634 | |
fd482be5 | 5635 | /* Set the screen height to the value it had before this function. */ |
949cf20f KS |
5636 | if (previous_frame_lines != FRAME_LINES (f) |
5637 | || previous_frame_cols != FRAME_COLS (f)) | |
5638 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 5639 | 0, 0, 0); |
e3678b64 | 5640 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 5641 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
5642 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
5643 | make_number (0)); | |
4314246f | 5644 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5645 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
5646 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
5647 | make_number (0)); | |
4314246f | 5648 | #endif |
217f2871 | 5649 | #endif |
d2b35234 | 5650 | |
5500c422 | 5651 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
5652 | for (i = n = 0; i < n_leaf_windows; ++i) |
5653 | { | |
5654 | if (NILP (leaf_windows[i]->buffer)) | |
5655 | { | |
5656 | /* Assert it's not reused as a combination. */ | |
177c0ea7 | 5657 | xassert (NILP (leaf_windows[i]->hchild) |
c4280705 GM |
5658 | && NILP (leaf_windows[i]->vchild)); |
5659 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
5660 | } |
5661 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
5662 | ++n; | |
5663 | } | |
177c0ea7 | 5664 | |
5500c422 | 5665 | adjust_glyphs (f); |
d2b35234 | 5666 | UNBLOCK_INPUT; |
756b6edc | 5667 | |
6198ccd0 MR |
5668 | /* Scan dead buffer windows. */ |
5669 | for (; CONSP (dead_windows); dead_windows = XCDR (dead_windows)) | |
5670 | { | |
5671 | window = XCAR (dead_windows); | |
5672 | if (WINDOW_LIVE_P (window) && !EQ (window, FRAME_ROOT_WINDOW (f))) | |
5673 | delete_deletable_window (window); | |
5674 | } | |
5675 | ||
478292ed RS |
5676 | /* Fselect_window will have made f the selected frame, so we |
5677 | reselect the proper frame here. Fhandle_switch_frame will change the | |
5678 | selected window too, but that doesn't make the call to | |
5679 | Fselect_window above totally superfluous; it still sets f's | |
5680 | selected window. */ | |
5681 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
c6932ecd | 5682 | do_switch_frame (data->selected_frame, 0, 0, Qnil); |
478292ed | 5683 | |
eeca6f6f | 5684 | run_window_configuration_change_hook (f); |
478292ed | 5685 | } |
bdc727bf JB |
5686 | |
5687 | if (!NILP (new_current_buffer)) | |
243a5ce6 | 5688 | Fset_buffer (new_current_buffer); |
bdc727bf | 5689 | |
478292ed | 5690 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 5691 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 5692 | |
3f8ab7bd | 5693 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
5694 | } |
5695 | ||
562dd5e9 | 5696 | |
be7f5545 MR |
5697 | /* Recursively delete all child windows reachable via the next, vchild, |
5698 | and hchild slots of WINDOW. */ | |
fd482be5 | 5699 | void |
be7f5545 | 5700 | delete_all_child_windows (Lisp_Object window) |
7ab12479 | 5701 | { |
fa8a67e6 MR |
5702 | register struct window *w; |
5703 | ||
5704 | w = XWINDOW (window); | |
5705 | ||
265a9e55 | 5706 | if (!NILP (w->next)) |
fa8a67e6 | 5707 | /* Delete WINDOW's siblings (we traverse postorderly). */ |
be7f5545 | 5708 | delete_all_child_windows (w->next); |
605be8af | 5709 | |
949cf20f | 5710 | w->total_lines = w->buffer; /* See Fset_window_configuration for excuse. */ |
605be8af | 5711 | |
fa8a67e6 MR |
5712 | if (!NILP (w->vchild)) |
5713 | { | |
be7f5545 | 5714 | delete_all_child_windows (w->vchild); |
fa8a67e6 MR |
5715 | w->vchild = Qnil; |
5716 | } | |
5717 | else if (!NILP (w->hchild)) | |
5718 | { | |
be7f5545 | 5719 | delete_all_child_windows (w->hchild); |
fa8a67e6 MR |
5720 | w->hchild = Qnil; |
5721 | } | |
5722 | else if (!NILP (w->buffer)) | |
5723 | { | |
5724 | unshow_buffer (w); | |
5725 | unchain_marker (XMARKER (w->pointm)); | |
5726 | unchain_marker (XMARKER (w->start)); | |
5727 | w->buffer = Qnil; | |
5728 | } | |
acf70840 GM |
5729 | |
5730 | Vwindow_list = Qnil; | |
7ab12479 JB |
5731 | } |
5732 | \f | |
5733 | static int | |
971de7fb | 5734 | count_windows (register struct window *window) |
7ab12479 JB |
5735 | { |
5736 | register int count = 1; | |
265a9e55 | 5737 | if (!NILP (window->next)) |
7ab12479 | 5738 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 5739 | if (!NILP (window->vchild)) |
7ab12479 | 5740 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 5741 | if (!NILP (window->hchild)) |
7ab12479 JB |
5742 | count += count_windows (XWINDOW (window->hchild)); |
5743 | return count; | |
5744 | } | |
5745 | ||
5500c422 | 5746 | |
177c0ea7 | 5747 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 | 5748 | Value is last index + 1. */ |
5500c422 | 5749 | static int |
971de7fb | 5750 | get_leaf_windows (struct window *w, struct window **flat, int i) |
5500c422 GM |
5751 | { |
5752 | while (w) | |
5753 | { | |
5754 | if (!NILP (w->hchild)) | |
5755 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
5756 | else if (!NILP (w->vchild)) | |
5757 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 5758 | else |
5500c422 GM |
5759 | flat[i++] = w; |
5760 | ||
5761 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
5762 | } | |
5763 | ||
5764 | return i; | |
5765 | } | |
5766 | ||
5767 | ||
5768 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
5769 | null if W's current matrix is invalid, so that no meaningfull glyph | |
5770 | can be returned. */ | |
5500c422 | 5771 | struct glyph * |
971de7fb | 5772 | get_phys_cursor_glyph (struct window *w) |
5500c422 GM |
5773 | { |
5774 | struct glyph_row *row; | |
5775 | struct glyph *glyph; | |
f8fe6f96 | 5776 | int hpos = w->phys_cursor.hpos; |
5500c422 | 5777 | |
f8fe6f96 EZ |
5778 | if (!(w->phys_cursor.vpos >= 0 |
5779 | && w->phys_cursor.vpos < w->current_matrix->nrows)) | |
5780 | return NULL; | |
5781 | ||
5782 | row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos); | |
5783 | if (!row->enabled_p) | |
5784 | return NULL; | |
5785 | ||
5786 | if (w->hscroll) | |
5787 | { | |
5788 | /* When the window is hscrolled, cursor hpos can legitimately be | |
5789 | out of bounds, but we draw the cursor at the corresponding | |
5790 | window margin in that case. */ | |
5791 | if (!row->reversed_p && hpos < 0) | |
5792 | hpos = 0; | |
5793 | if (row->reversed_p && hpos >= row->used[TEXT_AREA]) | |
5794 | hpos = row->used[TEXT_AREA] - 1; | |
5795 | } | |
5796 | ||
5797 | if (row->used[TEXT_AREA] > hpos | |
5798 | && 0 <= hpos) | |
5799 | glyph = row->glyphs[TEXT_AREA] + hpos; | |
5500c422 GM |
5800 | else |
5801 | glyph = NULL; | |
5802 | ||
5803 | return glyph; | |
5804 | } | |
5805 | ||
5806 | ||
7ab12479 | 5807 | static int |
971de7fb | 5808 | save_window_save (Lisp_Object window, struct Lisp_Vector *vector, int i) |
7ab12479 JB |
5809 | { |
5810 | register struct saved_window *p; | |
5811 | register struct window *w; | |
5812 | register Lisp_Object tem; | |
5813 | ||
265a9e55 | 5814 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
5815 | { |
5816 | p = SAVED_WINDOW_N (vector, i); | |
5817 | w = XWINDOW (window); | |
5818 | ||
2a1893f4 | 5819 | XSETFASTINT (w->temslot, i); i++; |
7ab12479 JB |
5820 | p->window = window; |
5821 | p->buffer = w->buffer; | |
949cf20f KS |
5822 | p->left_col = w->left_col; |
5823 | p->top_line = w->top_line; | |
5824 | p->total_cols = w->total_cols; | |
5825 | p->total_lines = w->total_lines; | |
496e208e MR |
5826 | p->normal_cols = w->normal_cols; |
5827 | p->normal_lines = w->normal_lines; | |
7ab12479 | 5828 | p->hscroll = w->hscroll; |
ea68264b | 5829 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 5830 | p->display_table = w->display_table; |
949cf20f KS |
5831 | p->left_margin_cols = w->left_margin_cols; |
5832 | p->right_margin_cols = w->right_margin_cols; | |
5833 | p->left_fringe_width = w->left_fringe_width; | |
5834 | p->right_fringe_width = w->right_fringe_width; | |
5835 | p->fringes_outside_margins = w->fringes_outside_margins; | |
5836 | p->scroll_bar_width = w->scroll_bar_width; | |
5837 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6ad0381c | 5838 | p->dedicated = w->dedicated; |
b6f67890 | 5839 | p->combination_limit = w->combination_limit; |
496e208e | 5840 | p->window_parameters = w->window_parameters; |
265a9e55 | 5841 | if (!NILP (w->buffer)) |
7ab12479 JB |
5842 | { |
5843 | /* Save w's value of point in the window configuration. | |
5844 | If w is the selected window, then get the value of point | |
5845 | from the buffer; pointm is garbage in the selected window. */ | |
5846 | if (EQ (window, selected_window)) | |
5847 | { | |
5848 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
5849 | set_marker_both (p->pointm, w->buffer, |
5850 | BUF_PT (XBUFFER (w->buffer)), | |
5851 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
5852 | } |
5853 | else | |
eeb82665 | 5854 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 5855 | |
eeb82665 | 5856 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
5857 | p->start_at_line_beg = w->start_at_line_beg; |
5858 | ||
4b4deea2 | 5859 | tem = BVAR (XBUFFER (w->buffer), mark); |
eeb82665 | 5860 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
5861 | } |
5862 | else | |
5863 | { | |
5864 | p->pointm = Qnil; | |
5865 | p->start = Qnil; | |
5866 | p->mark = Qnil; | |
5867 | p->start_at_line_beg = Qnil; | |
5868 | } | |
5869 | ||
265a9e55 | 5870 | if (NILP (w->parent)) |
7ab12479 JB |
5871 | p->parent = Qnil; |
5872 | else | |
5873 | p->parent = XWINDOW (w->parent)->temslot; | |
5874 | ||
265a9e55 | 5875 | if (NILP (w->prev)) |
7ab12479 JB |
5876 | p->prev = Qnil; |
5877 | else | |
5878 | p->prev = XWINDOW (w->prev)->temslot; | |
5879 | ||
265a9e55 | 5880 | if (!NILP (w->vchild)) |
7ab12479 | 5881 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 5882 | if (!NILP (w->hchild)) |
7ab12479 JB |
5883 | i = save_window_save (w->hchild, vector, i); |
5884 | } | |
5885 | ||
5886 | return i; | |
5887 | } | |
5888 | ||
a7ca3326 | 5889 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
5890 | Scurrent_window_configuration, 0, 1, 0, |
5891 | doc: /* Return an object representing the current window configuration of FRAME. | |
5892 | If FRAME is nil or omitted, use the selected frame. | |
5893 | This describes the number of windows, their sizes and current buffers, | |
5894 | and for each displayed buffer, where display starts, and the positions of | |
5895 | point and mark. An exception is made for point in the current buffer: | |
5896 | its value is -not- saved. | |
5897 | This also records the currently selected frame, and FRAME's focus | |
5898 | redirection (see `redirect-frame-focus'). */) | |
5842a27b | 5899 | (Lisp_Object frame) |
7ab12479 JB |
5900 | { |
5901 | register Lisp_Object tem; | |
5902 | register int n_windows; | |
5903 | register struct save_window_data *data; | |
5904 | register int i; | |
44fa5b1e | 5905 | FRAME_PTR f; |
43bad991 | 5906 | |
44fa5b1e | 5907 | if (NILP (frame)) |
1ae1a37d | 5908 | frame = selected_frame; |
b7826503 | 5909 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 5910 | f = XFRAME (frame); |
7ab12479 | 5911 | |
44fa5b1e | 5912 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
5913 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
5914 | PVEC_WINDOW_CONFIGURATION); | |
5915 | ||
5916 | data->frame_cols = FRAME_COLS (f); | |
5917 | data->frame_lines = FRAME_LINES (f); | |
5918 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
5919 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 5920 | data->selected_frame = selected_frame; |
44fa5b1e | 5921 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 5922 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 5923 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 5924 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 5925 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 5926 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
7ab12479 JB |
5927 | tem = Fmake_vector (make_number (n_windows), Qnil); |
5928 | data->saved_windows = tem; | |
5929 | for (i = 0; i < n_windows; i++) | |
5930 | XVECTOR (tem)->contents[i] | |
8a450f0a | 5931 | = Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil); |
a1d58e5b | 5932 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 5933 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
5934 | return (tem); |
5935 | } | |
5500c422 GM |
5936 | \f |
5937 | /*********************************************************************** | |
5938 | Marginal Areas | |
5939 | ***********************************************************************/ | |
5940 | ||
5941 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 5942 | 2, 3, 0, |
fdb82f93 | 5943 | doc: /* Set width of marginal areas of window WINDOW. |
6b61353c KH |
5944 | If WINDOW is nil, set margins of the currently selected window. |
5945 | Second arg LEFT-WIDTH specifies the number of character cells to | |
5946 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
5947 | does the same for the right marginal area. A nil width parameter | |
5948 | means no margin. */) | |
5842a27b | 5949 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width) |
5500c422 GM |
5950 | { |
5951 | struct window *w = decode_window (window); | |
5500c422 | 5952 | |
6b61353c KH |
5953 | /* Translate negative or zero widths to nil. |
5954 | Margins that are too wide have to be checked elsewhere. */ | |
949cf20f | 5955 | |
c10ce82e | 5956 | if (!NILP (left_width)) |
6b61353c | 5957 | { |
c10ce82e JB |
5958 | CHECK_NUMBER (left_width); |
5959 | if (XINT (left_width) <= 0) | |
5960 | left_width = Qnil; | |
6b61353c | 5961 | } |
5500c422 | 5962 | |
c10ce82e | 5963 | if (!NILP (right_width)) |
6b61353c | 5964 | { |
c10ce82e JB |
5965 | CHECK_NUMBER (right_width); |
5966 | if (XINT (right_width) <= 0) | |
5967 | right_width = Qnil; | |
6b61353c | 5968 | } |
5500c422 | 5969 | |
c10ce82e JB |
5970 | if (!EQ (w->left_margin_cols, left_width) |
5971 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 5972 | { |
c10ce82e JB |
5973 | w->left_margin_cols = left_width; |
5974 | w->right_margin_cols = right_width; | |
949cf20f KS |
5975 | |
5976 | adjust_window_margins (w); | |
5977 | ||
5978 | ++windows_or_buffers_changed; | |
5979 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
5980 | } | |
5500c422 | 5981 | |
5500c422 GM |
5982 | return Qnil; |
5983 | } | |
5984 | ||
5985 | ||
5986 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
5987 | 0, 1, 0, | |
fdb82f93 | 5988 | doc: /* Get width of marginal areas of window WINDOW. |
49745b39 | 5989 | If WINDOW is omitted or nil, it defaults to the selected window. |
fdb82f93 PJ |
5990 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). |
5991 | If a marginal area does not exist, its width will be returned | |
5992 | as nil. */) | |
5842a27b | 5993 | (Lisp_Object window) |
5500c422 GM |
5994 | { |
5995 | struct window *w = decode_window (window); | |
949cf20f KS |
5996 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
5997 | } | |
5998 | ||
5999 | ||
6000 | \f | |
6001 | /*********************************************************************** | |
6002 | Fringes | |
6003 | ***********************************************************************/ | |
6004 | ||
a7ca3326 | 6005 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, |
949cf20f | 6006 | 2, 4, 0, |
6b61353c KH |
6007 | doc: /* Set the fringe widths of window WINDOW. |
6008 | If WINDOW is nil, set the fringe widths of the currently selected | |
6009 | window. | |
6010 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for | |
6011 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6012 | fringe width. If a fringe width arg is nil, that means to use the | |
6013 | frame's default fringe width. Default fringe widths can be set with | |
6014 | the command `set-fringe-style'. | |
6015 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6016 | outside of the display margins. By default, fringes are drawn between | |
6017 | display marginal areas and the text area. */) | |
5842a27b | 6018 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width, Lisp_Object outside_margins) |
949cf20f KS |
6019 | { |
6020 | struct window *w = decode_window (window); | |
6021 | ||
c10ce82e JB |
6022 | if (!NILP (left_width)) |
6023 | CHECK_NATNUM (left_width); | |
6024 | if (!NILP (right_width)) | |
6025 | CHECK_NATNUM (right_width); | |
5a857365 | 6026 | |
017e297e | 6027 | /* Do nothing on a tty. */ |
d46c6df5 NR |
6028 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
6029 | && (!EQ (w->left_fringe_width, left_width) | |
6030 | || !EQ (w->right_fringe_width, right_width) | |
6031 | || !EQ (w->fringes_outside_margins, outside_margins))) | |
949cf20f | 6032 | { |
c10ce82e JB |
6033 | w->left_fringe_width = left_width; |
6034 | w->right_fringe_width = right_width; | |
949cf20f KS |
6035 | w->fringes_outside_margins = outside_margins; |
6036 | ||
6037 | adjust_window_margins (w); | |
6038 | ||
6039 | clear_glyph_matrix (w->current_matrix); | |
6040 | w->window_end_valid = Qnil; | |
6041 | ||
6042 | ++windows_or_buffers_changed; | |
6043 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6044 | } | |
6045 | ||
6046 | return Qnil; | |
6047 | } | |
6048 | ||
6049 | ||
6050 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6051 | 0, 1, 0, | |
6052 | doc: /* Get width of fringes of window WINDOW. | |
49745b39 | 6053 | If WINDOW is omitted or nil, it defaults to the selected window. |
6b61353c | 6054 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
5842a27b | 6055 | (Lisp_Object window) |
949cf20f KS |
6056 | { |
6057 | struct window *w = decode_window (window); | |
d46c6df5 | 6058 | |
949cf20f KS |
6059 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6060 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
d46c6df5 NR |
6061 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
6062 | ? Qt : Qnil), Qnil))); | |
949cf20f KS |
6063 | } |
6064 | ||
6065 | ||
6066 | \f | |
6067 | /*********************************************************************** | |
6068 | Scroll bars | |
6069 | ***********************************************************************/ | |
6070 | ||
a7ca3326 | 6071 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, |
16a97296 | 6072 | Sset_window_scroll_bars, 2, 4, 0, |
949cf20f KS |
6073 | doc: /* Set width and type of scroll bars of window WINDOW. |
6074 | If window is nil, set scroll bars of the currently selected window. | |
6075 | Second parameter WIDTH specifies the pixel width for the scroll bar; | |
6076 | this is automatically adjusted to a multiple of the frame column width. | |
6077 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6078 | bar: left, right, or nil. | |
6b61353c | 6079 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6080 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6081 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
5842a27b | 6082 | (Lisp_Object window, Lisp_Object width, Lisp_Object vertical_type, Lisp_Object horizontal_type) |
949cf20f KS |
6083 | { |
6084 | struct window *w = decode_window (window); | |
6085 | ||
6086 | if (!NILP (width)) | |
0f8fe9a2 SM |
6087 | { |
6088 | CHECK_NATNUM (width); | |
949cf20f | 6089 | |
0f8fe9a2 SM |
6090 | if (XINT (width) == 0) |
6091 | vertical_type = Qnil; | |
6092 | } | |
949cf20f | 6093 | |
413a79ad | 6094 | if (!(NILP (vertical_type) |
0cc1039f | 6095 | || EQ (vertical_type, Qleft) |
6b61353c KH |
6096 | || EQ (vertical_type, Qright) |
6097 | || EQ (vertical_type, Qt))) | |
6098 | error ("Invalid type of vertical scroll bar"); | |
6099 | ||
949cf20f KS |
6100 | if (!EQ (w->scroll_bar_width, width) |
6101 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
6102 | { | |
6103 | w->scroll_bar_width = width; | |
6104 | w->vertical_scroll_bar_type = vertical_type; | |
6105 | ||
6106 | adjust_window_margins (w); | |
6107 | ||
6108 | clear_glyph_matrix (w->current_matrix); | |
6109 | w->window_end_valid = Qnil; | |
6110 | ||
6111 | ++windows_or_buffers_changed; | |
6112 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6113 | } | |
6114 | ||
6115 | return Qnil; | |
6116 | } | |
6117 | ||
6118 | ||
6119 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6120 | 0, 1, 0, | |
6121 | doc: /* Get width and type of scroll bars of window WINDOW. | |
49745b39 | 6122 | If WINDOW is omitted or nil, it defaults to the selected window. |
6b61353c KH |
6123 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6124 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6125 | value. */) | |
5842a27b | 6126 | (Lisp_Object window) |
949cf20f KS |
6127 | { |
6128 | struct window *w = decode_window (window); | |
6129 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6130 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6131 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
6132 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
6133 | Fcons (w->vertical_scroll_bar_type, | |
6134 | Fcons (Qnil, Qnil)))); | |
5500c422 GM |
6135 | } |
6136 | ||
6137 | ||
7ab12479 | 6138 | \f |
5500c422 GM |
6139 | /*********************************************************************** |
6140 | Smooth scrolling | |
6141 | ***********************************************************************/ | |
6142 | ||
0cc1039f | 6143 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 | 6144 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
49745b39 | 6145 | If WINDOW is omitted or nil, it defaults to the selected window. |
0cc1039f | 6146 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6147 | optional second arg PIXELS-P means value is measured in pixels. */) |
5842a27b | 6148 | (Lisp_Object window, Lisp_Object pixels_p) |
5500c422 | 6149 | { |
47004952 | 6150 | Lisp_Object result; |
5500c422 GM |
6151 | struct frame *f; |
6152 | struct window *w; | |
177c0ea7 | 6153 | |
5500c422 GM |
6154 | if (NILP (window)) |
6155 | window = selected_window; | |
47004952 | 6156 | else |
b7826503 | 6157 | CHECK_WINDOW (window); |
5500c422 GM |
6158 | w = XWINDOW (window); |
6159 | f = XFRAME (w->frame); | |
177c0ea7 | 6160 | |
5500c422 | 6161 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6162 | result = (NILP (pixels_p) |
6163 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6164 | : make_number (-w->vscroll)); | |
5500c422 | 6165 | else |
47004952 GM |
6166 | result = make_number (0); |
6167 | return result; | |
5500c422 GM |
6168 | } |
6169 | ||
6170 | ||
6171 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6172 | 2, 3, 0, |
fdb82f93 | 6173 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6174 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6175 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6176 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6177 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6178 | corresponds to an integral number of pixels. The return value is the | |
6179 | result of this rounding. | |
6180 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
5842a27b | 6181 | (Lisp_Object window, Lisp_Object vscroll, Lisp_Object pixels_p) |
5500c422 GM |
6182 | { |
6183 | struct window *w; | |
6184 | struct frame *f; | |
177c0ea7 | 6185 | |
5500c422 GM |
6186 | if (NILP (window)) |
6187 | window = selected_window; | |
47004952 | 6188 | else |
b7826503 PJ |
6189 | CHECK_WINDOW (window); |
6190 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 6191 | |
5500c422 GM |
6192 | w = XWINDOW (window); |
6193 | f = XFRAME (w->frame); | |
6194 | ||
6195 | if (FRAME_WINDOW_P (f)) | |
6196 | { | |
6197 | int old_dy = w->vscroll; | |
177c0ea7 | 6198 | |
0cc1039f KS |
6199 | w->vscroll = - (NILP (pixels_p) |
6200 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6201 | : XFLOATINT (vscroll)); | |
47004952 | 6202 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6203 | |
e56263e5 KS |
6204 | if (w->vscroll != old_dy) |
6205 | { | |
6206 | /* Adjust glyph matrix of the frame if the virtual display | |
6207 | area becomes larger than before. */ | |
6208 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
6209 | adjust_glyphs (f); | |
177c0ea7 | 6210 | |
e56263e5 KS |
6211 | /* Prevent redisplay shortcuts. */ |
6212 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
6213 | } | |
5500c422 | 6214 | } |
177c0ea7 | 6215 | |
0cc1039f | 6216 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 6217 | } |
177c0ea7 | 6218 | |
7bbb5782 GM |
6219 | \f |
6220 | /* Call FN for all leaf windows on frame F. FN is called with the | |
6221 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 6222 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 | 6223 | |
2f7c71a1 AS |
6224 | static void |
6225 | foreach_window (struct frame *f, int (*fn) (struct window *, void *), | |
6226 | void *user_data) | |
7bbb5782 | 6227 | { |
56f2de10 | 6228 | /* delete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
76fb556f YM |
6229 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) |
6230 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
6231 | } |
6232 | ||
6233 | ||
6234 | /* Helper function for foreach_window. Call FN for all leaf windows | |
6235 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 6236 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 6237 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 6238 | |
67492200 | 6239 | static int |
971de7fb | 6240 | foreach_window_1 (struct window *w, int (*fn) (struct window *, void *), void *user_data) |
7bbb5782 | 6241 | { |
67492200 | 6242 | int cont; |
177c0ea7 | 6243 | |
67492200 | 6244 | for (cont = 1; w && cont;) |
7bbb5782 GM |
6245 | { |
6246 | if (!NILP (w->hchild)) | |
f95464e4 | 6247 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 6248 | else if (!NILP (w->vchild)) |
f95464e4 | 6249 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
177c0ea7 | 6250 | else |
0f532a9a | 6251 | cont = fn (w, user_data); |
177c0ea7 | 6252 | |
7bbb5782 GM |
6253 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
6254 | } | |
67492200 GM |
6255 | |
6256 | return cont; | |
7bbb5782 GM |
6257 | } |
6258 | ||
6259 | ||
6d194a45 | 6260 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 6261 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
6262 | the window start. */ |
6263 | ||
67492200 | 6264 | static int |
971de7fb | 6265 | freeze_window_start (struct window *w, void *freeze_p) |
7bbb5782 | 6266 | { |
08c1d235 SM |
6267 | if (MINI_WINDOW_P (w) |
6268 | || (WINDOWP (selected_window) /* Can be nil in corner cases. */ | |
6269 | && (w == XWINDOW (selected_window) | |
6270 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
6271 | && ! NILP (Vminibuf_scroll_window) | |
6272 | && w == XWINDOW (Vminibuf_scroll_window))))) | |
f95464e4 | 6273 | freeze_p = NULL; |
177c0ea7 | 6274 | |
f95464e4 | 6275 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 6276 | return 1; |
7bbb5782 GM |
6277 | } |
6278 | ||
6279 | ||
6280 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
6281 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
6282 | means freeze the window start. */ | |
6283 | ||
6284 | void | |
971de7fb | 6285 | freeze_window_starts (struct frame *f, int freeze_p) |
7bbb5782 | 6286 | { |
cbccabec | 6287 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 6288 | } |
5500c422 GM |
6289 | |
6290 | \f | |
6291 | /*********************************************************************** | |
6292 | Initialization | |
6293 | ***********************************************************************/ | |
6294 | ||
6198ccd0 MR |
6295 | /* Return 1 if window configurations CONFIGURATION1 and CONFIGURATION2 |
6296 | describe the same state of affairs. This is used by Fequal. | |
6297 | ||
6298 | ignore_positions non-zero means ignore non-matching scroll positions | |
6299 | and the like. | |
6300 | ||
6301 | This ignores a couple of things like the dedicatedness status of | |
b6f67890 MR |
6302 | window, combination_limit and the like. This might have to be |
6303 | fixed. */ | |
cbff28e8 RS |
6304 | |
6305 | int | |
6198ccd0 | 6306 | compare_window_configurations (Lisp_Object configuration1, Lisp_Object configuration2, int ignore_positions) |
cbff28e8 RS |
6307 | { |
6308 | register struct save_window_data *d1, *d2; | |
6198ccd0 | 6309 | struct Lisp_Vector *sws1, *sws2; |
71f02bc5 | 6310 | ptrdiff_t i; |
cbff28e8 | 6311 | |
6198ccd0 MR |
6312 | CHECK_WINDOW_CONFIGURATION (configuration1); |
6313 | CHECK_WINDOW_CONFIGURATION (configuration2); | |
6314 | ||
6315 | d1 = (struct save_window_data *) XVECTOR (configuration1); | |
6316 | d2 = (struct save_window_data *) XVECTOR (configuration2); | |
6317 | sws1 = XVECTOR (d1->saved_windows); | |
6318 | sws2 = XVECTOR (d2->saved_windows); | |
6319 | ||
6320 | /* Frame settings must match. */ | |
6321 | if (d1->frame_cols != d2->frame_cols | |
6322 | || d1->frame_lines != d2->frame_lines | |
6323 | || d1->frame_menu_bar_lines != d2->frame_menu_bar_lines | |
6324 | || !EQ (d1->selected_frame, d2->selected_frame) | |
6325 | || !EQ (d1->current_buffer, d2->current_buffer) | |
6326 | || (!ignore_positions | |
6327 | && (!EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window) | |
6328 | || !EQ (d1->minibuf_selected_window, d2->minibuf_selected_window))) | |
6329 | || !EQ (d1->focus_frame, d2->focus_frame) | |
6330 | /* Verify that the two configurations have the same number of windows. */ | |
6331 | || sws1->header.size != sws2->header.size) | |
cbff28e8 | 6332 | return 0; |
cbff28e8 | 6333 | |
6198ccd0 | 6334 | for (i = 0; i < sws1->header.size; i++) |
cbff28e8 | 6335 | { |
6198ccd0 | 6336 | struct saved_window *sw1, *sw2; |
cbff28e8 | 6337 | |
6198ccd0 MR |
6338 | sw1 = SAVED_WINDOW_N (sws1, i); |
6339 | sw2 = SAVED_WINDOW_N (sws2, i); | |
6340 | ||
6341 | if ( | |
6342 | /* The "current" windows in the two configurations must | |
6343 | correspond to each other. */ | |
6344 | EQ (d1->current_window, sw1->window) | |
6345 | != EQ (d2->current_window, sw2->window) | |
6346 | /* Windows' buffers must match. */ | |
6347 | || !EQ (sw1->buffer, sw2->buffer) | |
6348 | || !EQ (sw1->left_col, sw2->left_col) | |
6349 | || !EQ (sw1->top_line, sw2->top_line) | |
6350 | || !EQ (sw1->total_cols, sw2->total_cols) | |
6351 | || !EQ (sw1->total_lines, sw2->total_lines) | |
6352 | || !EQ (sw1->display_table, sw2->display_table) | |
6353 | /* The next two disjuncts check the window structure for | |
6354 | equality. */ | |
6355 | || !EQ (sw1->parent, sw2->parent) | |
6356 | || !EQ (sw1->prev, sw2->prev) | |
6357 | || (!ignore_positions | |
6358 | && (!EQ (sw1->hscroll, sw2->hscroll) | |
6359 | || !EQ (sw1->min_hscroll, sw2->min_hscroll) | |
6360 | || !EQ (sw1->start_at_line_beg, sw2->start_at_line_beg) | |
6361 | || NILP (Fequal (sw1->start, sw2->start)) | |
6362 | || NILP (Fequal (sw1->pointm, sw2->pointm)) | |
6363 | || NILP (Fequal (sw1->mark, sw2->mark)))) | |
6364 | || !EQ (sw1->left_margin_cols, sw2->left_margin_cols) | |
6365 | || !EQ (sw1->right_margin_cols, sw2->right_margin_cols) | |
6366 | || !EQ (sw1->left_fringe_width, sw2->left_fringe_width) | |
6367 | || !EQ (sw1->right_fringe_width, sw2->right_fringe_width) | |
6368 | || !EQ (sw1->fringes_outside_margins, sw2->fringes_outside_margins) | |
6369 | || !EQ (sw1->scroll_bar_width, sw2->scroll_bar_width) | |
6370 | || !EQ (sw1->vertical_scroll_bar_type, sw2->vertical_scroll_bar_type)) | |
949cf20f | 6371 | return 0; |
cbff28e8 RS |
6372 | } |
6373 | ||
6374 | return 1; | |
6375 | } | |
2f8274be RS |
6376 | |
6377 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
6378 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
6379 | doc: /* Compare two window configurations as regards the structure of windows. |
6380 | This function ignores details such as the values of point and mark | |
6381 | and scrolling positions. */) | |
5842a27b | 6382 | (Lisp_Object x, Lisp_Object y) |
2f8274be RS |
6383 | { |
6384 | if (compare_window_configurations (x, y, 1)) | |
6385 | return Qt; | |
6386 | return Qnil; | |
6387 | } | |
cbff28e8 | 6388 | \f |
dfcf069d | 6389 | void |
971de7fb | 6390 | init_window_once (void) |
7ab12479 | 6391 | { |
3224dac1 | 6392 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
6393 | XSETFRAME (selected_frame, f); |
6394 | Vterminal_frame = selected_frame; | |
6395 | minibuf_window = f->minibuffer_window; | |
6396 | selected_window = f->selected_window; | |
6397 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
6398 | |
6399 | window_initialized = 1; | |
7ab12479 JB |
6400 | } |
6401 | ||
67492200 | 6402 | void |
971de7fb | 6403 | init_window (void) |
67492200 GM |
6404 | { |
6405 | Vwindow_list = Qnil; | |
6406 | } | |
6407 | ||
dfcf069d | 6408 | void |
971de7fb | 6409 | syms_of_window (void) |
7ab12479 | 6410 | { |
cd3520a4 JB |
6411 | DEFSYM (Qscroll_up, "scroll-up"); |
6412 | DEFSYM (Qscroll_down, "scroll-down"); | |
6413 | DEFSYM (Qscroll_command, "scroll-command"); | |
a4b000fb JL |
6414 | |
6415 | Fput (Qscroll_up, Qscroll_command, Qt); | |
6416 | Fput (Qscroll_down, Qscroll_command, Qt); | |
6417 | ||
cd3520a4 JB |
6418 | DEFSYM (Qwindow_configuration_change_hook, "window-configuration-change-hook"); |
6419 | DEFSYM (Qwindowp, "windowp"); | |
6420 | DEFSYM (Qwindow_configuration_p, "window-configuration-p"); | |
6421 | DEFSYM (Qwindow_live_p, "window-live-p"); | |
6422 | DEFSYM (Qwindow_deletable_p, "window-deletable-p"); | |
6423 | DEFSYM (Qdelete_window, "delete-window"); | |
5386012d MR |
6424 | DEFSYM (Qwindow_resize_root_window, "window--resize-root-window"); |
6425 | DEFSYM (Qwindow_resize_root_window_vertically, "window--resize-root-window-vertically"); | |
cd3520a4 JB |
6426 | DEFSYM (Qsafe, "safe"); |
6427 | DEFSYM (Qdisplay_buffer, "display-buffer"); | |
6428 | DEFSYM (Qreplace_buffer_in_windows, "replace-buffer-in-windows"); | |
6429 | DEFSYM (Qrecord_window_buffer, "record-window-buffer"); | |
6430 | DEFSYM (Qget_mru_window, "get-mru-window"); | |
6431 | DEFSYM (Qtemp_buffer_show_hook, "temp-buffer-show-hook"); | |
6432 | DEFSYM (Qabove, "above"); | |
6433 | DEFSYM (Qbelow, "below"); | |
6434 | DEFSYM (Qauto_buffer_name, "auto-buffer-name"); | |
b9e809c2 | 6435 | |
67492200 | 6436 | staticpro (&Vwindow_list); |
8bfb170b KS |
6437 | |
6438 | minibuf_selected_window = Qnil; | |
3dbab091 | 6439 | staticpro (&minibuf_selected_window); |
67492200 | 6440 | |
c876b227 | 6441 | window_scroll_pixel_based_preserve_x = -1; |
66fe93d1 | 6442 | window_scroll_pixel_based_preserve_y = -1; |
c876b227 SM |
6443 | window_scroll_preserve_hpos = -1; |
6444 | window_scroll_preserve_vpos = -1; | |
66d43aea | 6445 | |
29208e82 | 6446 | DEFVAR_LISP ("temp-buffer-show-function", Vtemp_buffer_show_function, |
fdb82f93 PJ |
6447 | doc: /* Non-nil means call as function to display a help buffer. |
6448 | The function is called with one argument, the buffer to be displayed. | |
6449 | Used by `with-output-to-temp-buffer'. | |
6450 | If this function is used, then it must do the entire job of showing | |
6451 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 | 6452 | Vtemp_buffer_show_function = Qnil; |
e10ac9f1 | 6453 | |
29208e82 | 6454 | DEFVAR_LISP ("minibuffer-scroll-window", Vminibuf_scroll_window, |
fdb82f93 | 6455 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
6456 | Vminibuf_scroll_window = Qnil; |
6457 | ||
29208e82 | 6458 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", mode_line_in_non_selected_windows, |
26124d5e | 6459 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
6460 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
6461 | is displayed in the `mode-line' face. */); | |
6462 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 6463 | |
29208e82 | 6464 | DEFVAR_LISP ("other-window-scroll-buffer", Vother_window_scroll_buffer, |
fdb82f93 | 6465 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
6466 | Vother_window_scroll_buffer = Qnil; |
6467 | ||
29208e82 | 6468 | DEFVAR_BOOL ("auto-window-vscroll", auto_window_vscroll_p, |
e10ac9f1 | 6469 | doc: /* Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); |
e56263e5 KS |
6470 | auto_window_vscroll_p = 1; |
6471 | ||
29208e82 | 6472 | DEFVAR_INT ("next-screen-context-lines", next_screen_context_lines, |
e10ac9f1 | 6473 | doc: /* Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
6474 | next_screen_context_lines = 2; |
6475 | ||
5500c422 | 6476 | DEFVAR_LISP ("scroll-preserve-screen-position", |
29208e82 | 6477 | Vscroll_preserve_screen_position, |
e10ac9f1 | 6478 | doc: /* Controls if scroll commands move point to keep its screen position unchanged. |
bdf4ec93 RS |
6479 | A value of nil means point does not keep its screen position except |
6480 | at the scroll margin or window boundary respectively. | |
6481 | A value of t means point keeps its screen position if the scroll | |
6482 | command moved it vertically out of the window, e.g. when scrolling | |
6483 | by full screens. | |
9013a7f8 | 6484 | Any other value means point always keeps its screen position. |
a4b000fb JL |
6485 | Scroll commands should have the `scroll-command' property |
6486 | on their symbols to be controlled by this variable. */); | |
5500c422 | 6487 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 6488 | |
29208e82 | 6489 | DEFVAR_LISP ("window-point-insertion-type", Vwindow_point_insertion_type, |
a1562258 SM |
6490 | doc: /* Type of marker to use for `window-point'. */); |
6491 | Vwindow_point_insertion_type = Qnil; | |
6492 | ||
543f5fb1 | 6493 | DEFVAR_LISP ("window-configuration-change-hook", |
29208e82 | 6494 | Vwindow_configuration_change_hook, |
fdb82f93 | 6495 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
6496 | The buffer-local part is run once per window, with the relevant window |
6497 | selected; while the global part is run only once for the modified frame, | |
6498 | with the relevant frame selected. */); | |
543f5fb1 RS |
6499 | Vwindow_configuration_change_hook = Qnil; |
6500 | ||
29208e82 | 6501 | DEFVAR_LISP ("recenter-redisplay", Vrecenter_redisplay, |
666e158e | 6502 | doc: /* If non-nil, then the `recenter' command with a nil argument |
6e6e5760 | 6503 | will redraw the entire frame; the special value `tty' causes the |
666e158e MB |
6504 | frame to be redrawn only if it is a tty frame. */); |
6505 | Vrecenter_redisplay = Qtty; | |
6506 | ||
a0c2d0ae MR |
6507 | DEFVAR_LISP ("window-combination-resize", Vwindow_combination_resize, |
6508 | doc: /* Non-nil means resize window combinations proportionally. | |
1a13852e | 6509 | If this variable is nil, splitting a window gets the entire screen space |
a0c2d0ae | 6510 | for displaying the new window from the window to split. Deleting and |
df85d315 | 6511 | resizing a window preferably resizes one adjacent window only. |
a0c2d0ae MR |
6512 | |
6513 | If this variable is non-nil, splitting a window tries to get the space | |
6514 | proportionally from all windows in the same combination. This also | |
6515 | allows to split a window that is otherwise too small or of fixed size. | |
6516 | Resizing and deleting a window proportionally resize all windows in the | |
6517 | same combination. | |
1a13852e | 6518 | |
b6f67890 | 6519 | This variable takes no effect if `window-combination-limit' is non-nil. */); |
a0c2d0ae | 6520 | Vwindow_combination_resize = Qnil; |
1a13852e | 6521 | |
b6f67890 | 6522 | DEFVAR_LISP ("window-combination-limit", Vwindow_combination_limit, |
1a13852e MR |
6523 | doc: /* Non-nil means splitting a window makes a new parent window. |
6524 | If this variable is nil, splitting a window will create a new parent | |
6525 | window only if the window has no parent window or the window shall | |
58179cce | 6526 | become a combination orthogonal to the one it is part of. |
1a13852e | 6527 | |
b6f67890 MR |
6528 | If this variable is t, splitting a window always creates a new parent |
6529 | window. If all splits behave this way, each frame's window tree is a | |
6530 | binary tree and every window but the frame's root window has exactly one | |
6531 | sibling. | |
1a13852e | 6532 | |
b6f67890 MR |
6533 | Other values are reserved for future use. |
6534 | ||
d2999b1a MR |
6535 | The value of this variable is also assigned to the combination limit of |
6536 | the new parent window. The combination limit of a window can be | |
6537 | retrieved via the function `window-combination-limit' and altered by the | |
6538 | function `set-window-combination-limit'. */); | |
b6f67890 | 6539 | Vwindow_combination_limit = Qnil; |
666e158e | 6540 | |
7ab12479 JB |
6541 | defsubr (&Sselected_window); |
6542 | defsubr (&Sminibuffer_window); | |
6543 | defsubr (&Swindow_minibuffer_p); | |
6544 | defsubr (&Swindowp); | |
806b4d9b | 6545 | defsubr (&Swindow_live_p); |
727e958e MR |
6546 | defsubr (&Swindow_frame); |
6547 | defsubr (&Sframe_root_window); | |
6548 | defsubr (&Sframe_first_window); | |
6549 | defsubr (&Sframe_selected_window); | |
6550 | defsubr (&Sset_frame_selected_window); | |
7ab12479 | 6551 | defsubr (&Spos_visible_in_window_p); |
536833ab | 6552 | defsubr (&Swindow_line_height); |
7ab12479 | 6553 | defsubr (&Swindow_buffer); |
bf60a96b | 6554 | defsubr (&Swindow_parent); |
d68443dc MR |
6555 | defsubr (&Swindow_top_child); |
6556 | defsubr (&Swindow_left_child); | |
6557 | defsubr (&Swindow_next_sibling); | |
6558 | defsubr (&Swindow_prev_sibling); | |
b6f67890 MR |
6559 | defsubr (&Swindow_combination_limit); |
6560 | defsubr (&Sset_window_combination_limit); | |
abde8f8c MR |
6561 | defsubr (&Swindow_use_time); |
6562 | defsubr (&Swindow_top_line); | |
6563 | defsubr (&Swindow_left_column); | |
105216ed CY |
6564 | defsubr (&Swindow_total_height); |
6565 | defsubr (&Swindow_total_width); | |
496e208e MR |
6566 | defsubr (&Swindow_normal_size); |
6567 | defsubr (&Swindow_new_total); | |
6568 | defsubr (&Swindow_new_normal); | |
6569 | defsubr (&Sset_window_new_total); | |
6570 | defsubr (&Sset_window_new_normal); | |
d615d6d2 | 6571 | defsubr (&Swindow_resize_apply); |
105216ed CY |
6572 | defsubr (&Swindow_body_height); |
6573 | defsubr (&Swindow_body_width); | |
7ab12479 JB |
6574 | defsubr (&Swindow_hscroll); |
6575 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
6576 | defsubr (&Swindow_redisplay_end_trigger); |
6577 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 6578 | defsubr (&Swindow_edges); |
c99a9eb3 | 6579 | defsubr (&Swindow_pixel_edges); |
9d5405ec | 6580 | defsubr (&Swindow_absolute_pixel_edges); |
c99a9eb3 RS |
6581 | defsubr (&Swindow_inside_edges); |
6582 | defsubr (&Swindow_inside_pixel_edges); | |
9d5405ec | 6583 | defsubr (&Swindow_inside_absolute_pixel_edges); |
d5783c40 JB |
6584 | defsubr (&Scoordinates_in_window_p); |
6585 | defsubr (&Swindow_at); | |
7ab12479 JB |
6586 | defsubr (&Swindow_point); |
6587 | defsubr (&Swindow_start); | |
6588 | defsubr (&Swindow_end); | |
6589 | defsubr (&Sset_window_point); | |
6590 | defsubr (&Sset_window_start); | |
6591 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 6592 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
6593 | defsubr (&Swindow_display_table); |
6594 | defsubr (&Sset_window_display_table); | |
6595 | defsubr (&Snext_window); | |
6596 | defsubr (&Sprevious_window); | |
7ab12479 | 6597 | defsubr (&Sget_buffer_window); |
1a13852e MR |
6598 | defsubr (&Sdelete_other_windows_internal); |
6599 | defsubr (&Sdelete_window_internal); | |
6600 | defsubr (&Sresize_mini_window_internal); | |
7ab12479 | 6601 | defsubr (&Sset_window_buffer); |
1a13852e | 6602 | defsubr (&Srun_window_configuration_change_hook); |
7ab12479 | 6603 | defsubr (&Sselect_window); |
6b61353c | 6604 | defsubr (&Sforce_window_update); |
3e21b6a7 | 6605 | defsubr (&Stemp_output_buffer_show); |
1a13852e | 6606 | defsubr (&Ssplit_window_internal); |
7ab12479 JB |
6607 | defsubr (&Sscroll_up); |
6608 | defsubr (&Sscroll_down); | |
6609 | defsubr (&Sscroll_left); | |
6610 | defsubr (&Sscroll_right); | |
ccd0664b | 6611 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 6612 | defsubr (&Sscroll_other_window); |
fa832261 | 6613 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 6614 | defsubr (&Srecenter); |
81fe0836 | 6615 | defsubr (&Swindow_text_height); |
7ab12479 JB |
6616 | defsubr (&Smove_to_window_line); |
6617 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 6618 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
6619 | defsubr (&Sset_window_configuration); |
6620 | defsubr (&Scurrent_window_configuration); | |
5500c422 GM |
6621 | defsubr (&Sset_window_margins); |
6622 | defsubr (&Swindow_margins); | |
949cf20f KS |
6623 | defsubr (&Sset_window_fringes); |
6624 | defsubr (&Swindow_fringes); | |
6625 | defsubr (&Sset_window_scroll_bars); | |
6626 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
6627 | defsubr (&Swindow_vscroll); |
6628 | defsubr (&Sset_window_vscroll); | |
2f8274be | 6629 | defsubr (&Scompare_window_configurations); |
67492200 | 6630 | defsubr (&Swindow_list); |
abde8f8c | 6631 | defsubr (&Swindow_list_1); |
496e208e MR |
6632 | defsubr (&Swindow_prev_buffers); |
6633 | defsubr (&Sset_window_prev_buffers); | |
6634 | defsubr (&Swindow_next_buffers); | |
6635 | defsubr (&Sset_window_next_buffers); | |
cfbb2395 JB |
6636 | defsubr (&Swindow_parameters); |
6637 | defsubr (&Swindow_parameter); | |
6638 | defsubr (&Sset_window_parameter); | |
7ab12479 JB |
6639 | } |
6640 | ||
dfcf069d | 6641 | void |
971de7fb | 6642 | keys_of_window (void) |
7ab12479 | 6643 | { |
7ab12479 JB |
6644 | initial_define_key (control_x_map, '<', "scroll-left"); |
6645 | initial_define_key (control_x_map, '>', "scroll-right"); | |
6646 | ||
32129746 | 6647 | initial_define_key (global_map, Ctl ('V'), "scroll-up-command"); |
7ab12479 | 6648 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); |
32129746 | 6649 | initial_define_key (meta_map, 'v', "scroll-down-command"); |
7ab12479 | 6650 | } |