Commit | Line | Data |
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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
acaf905b | 3 | Copyright (C) 1985-1987, 1993-1998, 2000-2012 |
8cabe764 | 4 | Free Software Foundation, Inc. |
7ab12479 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
7ab12479 | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
7ab12479 JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
7ab12479 | 20 | |
18160b98 | 21 | #include <config.h> |
e8c17b81 PE |
22 | |
23 | #define WINDOW_INLINE EXTERN_INLINE | |
24 | ||
4d553a13 KL |
25 | #include <stdio.h> |
26 | ||
7ab12479 | 27 | #include "lisp.h" |
e5560ff7 | 28 | #include "character.h" |
7ab12479 | 29 | #include "buffer.h" |
3e4731a3 | 30 | #include "keyboard.h" |
e35f6ff7 | 31 | #include "keymap.h" |
44fa5b1e | 32 | #include "frame.h" |
7ab12479 JB |
33 | #include "window.h" |
34 | #include "commands.h" | |
35 | #include "indent.h" | |
36 | #include "termchar.h" | |
37 | #include "disptab.h" | |
dfcf069d | 38 | #include "dispextern.h" |
5500c422 GM |
39 | #include "blockinput.h" |
40 | #include "intervals.h" | |
de509a60 | 41 | #include "termhooks.h" /* For FRAME_TERMINAL. */ |
5500c422 | 42 | |
6d55d620 | 43 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 44 | #include "xterm.h" |
5500c422 | 45 | #endif /* HAVE_X_WINDOWS */ |
0fda9b75 | 46 | #ifdef HAVE_NTGUI |
8f23f280 AI |
47 | #include "w32term.h" |
48 | #endif | |
1e3c8885 EZ |
49 | #ifdef MSDOS |
50 | #include "msdos.h" | |
51 | #endif | |
edfda783 AR |
52 | #ifdef HAVE_NS |
53 | #include "nsterm.h" | |
54 | #endif | |
5500c422 | 55 | |
b52d6985 PE |
56 | Lisp_Object Qwindowp, Qwindow_live_p; |
57 | static Lisp_Object Qwindow_valid_p; | |
b9e809c2 | 58 | static Lisp_Object Qwindow_configuration_p, Qrecord_window_buffer; |
9397e56f | 59 | static Lisp_Object Qwindow_deletable_p, Qdelete_window, Qdisplay_buffer; |
b9e809c2 | 60 | static Lisp_Object Qreplace_buffer_in_windows, Qget_mru_window; |
5386012d | 61 | static Lisp_Object Qwindow_resize_root_window, Qwindow_resize_root_window_vertically; |
955cbe7b | 62 | static Lisp_Object Qscroll_up, Qscroll_down, Qscroll_command; |
5938d519 | 63 | static Lisp_Object Qsafe, Qabove, Qbelow, Qwindow_size, Qclone_of; |
b9e809c2 | 64 | |
f57e2426 | 65 | static int displayed_window_lines (struct window *); |
f57e2426 J |
66 | static int count_windows (struct window *); |
67 | static int get_leaf_windows (struct window *, struct window **, int); | |
d311d28c | 68 | static void window_scroll (Lisp_Object, EMACS_INT, int, int); |
f57e2426 J |
69 | static void window_scroll_pixel_based (Lisp_Object, int, int, int); |
70 | static void window_scroll_line_based (Lisp_Object, int, int, int); | |
f57e2426 | 71 | static int freeze_window_start (struct window *, void *); |
f57e2426 J |
72 | static Lisp_Object window_list (void); |
73 | static int add_window_to_list (struct window *, void *); | |
74 | static int candidate_window_p (Lisp_Object, Lisp_Object, Lisp_Object, | |
75 | Lisp_Object); | |
76 | static Lisp_Object next_window (Lisp_Object, Lisp_Object, | |
77 | Lisp_Object, int); | |
78 | static void decode_next_window_args (Lisp_Object *, Lisp_Object *, | |
79 | Lisp_Object *); | |
2f7c71a1 | 80 | static void foreach_window (struct frame *, |
f95464e4 | 81 | int (* fn) (struct window *, void *), |
2f7c71a1 | 82 | void *); |
f57e2426 J |
83 | static int foreach_window_1 (struct window *, |
84 | int (* fn) (struct window *, void *), | |
85 | void *); | |
86 | static Lisp_Object window_list_1 (Lisp_Object, Lisp_Object, Lisp_Object); | |
d615d6d2 MR |
87 | static int window_resize_check (struct window *, int); |
88 | static void window_resize_apply (struct window *, int); | |
7c82f3e2 | 89 | static Lisp_Object select_window (Lisp_Object, Lisp_Object, int); |
b7354ddf | 90 | |
7ab12479 JB |
91 | /* This is the window in which the terminal's cursor should |
92 | be left when nothing is being done with it. This must | |
93 | always be a leaf window, and its buffer is selected by | |
94 | the top level editing loop at the end of each command. | |
95 | ||
96 | This value is always the same as | |
44fa5b1e | 97 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
98 | Lisp_Object selected_window; |
99 | ||
67492200 GM |
100 | /* A list of all windows for use by next_window and Fwindow_list. |
101 | Functions creating or deleting windows should invalidate this cache | |
102 | by setting it to nil. */ | |
67492200 GM |
103 | Lisp_Object Vwindow_list; |
104 | ||
5500c422 GM |
105 | /* The mini-buffer window of the selected frame. |
106 | Note that you cannot test for mini-bufferness of an arbitrary window | |
107 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 JB |
108 | the selected window. */ |
109 | Lisp_Object minibuf_window; | |
110 | ||
3f49fddc KS |
111 | /* Non-nil means it is the window whose mode line should be |
112 | shown as the selected window when the minibuffer is selected. */ | |
3dbab091 | 113 | Lisp_Object minibuf_selected_window; |
3f49fddc | 114 | |
a58ec57d | 115 | /* Hook run at end of temp_output_buffer_show. */ |
955cbe7b | 116 | static Lisp_Object Qtemp_buffer_show_hook; |
a58ec57d | 117 | |
7ab12479 JB |
118 | /* Incremented for each window created. */ |
119 | static int sequence_number; | |
120 | ||
5b03d3c0 RS |
121 | /* Nonzero after init_window_once has finished. */ |
122 | static int window_initialized; | |
123 | ||
543f5fb1 | 124 | /* Hook to run when window config changes. */ |
eeca6f6f | 125 | static Lisp_Object Qwindow_configuration_change_hook; |
0d384044 | 126 | |
66d43aea | 127 | /* Used by the function window_scroll_pixel_based */ |
c876b227 | 128 | static int window_scroll_pixel_based_preserve_x; |
66fe93d1 | 129 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 130 | |
c876b227 | 131 | /* Same for window_scroll_line_based. */ |
d311d28c PE |
132 | static EMACS_INT window_scroll_preserve_hpos; |
133 | static EMACS_INT window_scroll_preserve_vpos; | |
f230ecc9 | 134 | \f |
e8c17b81 | 135 | /* These setters are used only in this file, so they can be private. */ |
b0ab8123 | 136 | static void |
e8c17b81 PE |
137 | wset_combination_limit (struct window *w, Lisp_Object val) |
138 | { | |
139 | w->combination_limit = val; | |
140 | } | |
b0ab8123 | 141 | static void |
e8c17b81 PE |
142 | wset_dedicated (struct window *w, Lisp_Object val) |
143 | { | |
144 | w->dedicated = val; | |
145 | } | |
b0ab8123 | 146 | static void |
e8c17b81 PE |
147 | wset_display_table (struct window *w, Lisp_Object val) |
148 | { | |
149 | w->display_table = val; | |
150 | } | |
b0ab8123 | 151 | static void |
e8c17b81 PE |
152 | wset_hchild (struct window *w, Lisp_Object val) |
153 | { | |
154 | w->hchild = val; | |
155 | } | |
b0ab8123 | 156 | static void |
e8c17b81 PE |
157 | wset_left_fringe_width (struct window *w, Lisp_Object val) |
158 | { | |
159 | w->left_fringe_width = val; | |
160 | } | |
b0ab8123 | 161 | static void |
e8c17b81 PE |
162 | wset_left_margin_cols (struct window *w, Lisp_Object val) |
163 | { | |
164 | w->left_margin_cols = val; | |
165 | } | |
b0ab8123 | 166 | static void |
e8c17b81 PE |
167 | wset_new_normal (struct window *w, Lisp_Object val) |
168 | { | |
169 | w->new_normal = val; | |
170 | } | |
b0ab8123 | 171 | static void |
e8c17b81 PE |
172 | wset_new_total (struct window *w, Lisp_Object val) |
173 | { | |
174 | w->new_total = val; | |
175 | } | |
b0ab8123 | 176 | static void |
e8c17b81 PE |
177 | wset_normal_cols (struct window *w, Lisp_Object val) |
178 | { | |
179 | w->normal_cols = val; | |
180 | } | |
b0ab8123 | 181 | static void |
e8c17b81 PE |
182 | wset_normal_lines (struct window *w, Lisp_Object val) |
183 | { | |
184 | w->normal_lines = val; | |
185 | } | |
b0ab8123 | 186 | static void |
e8c17b81 PE |
187 | wset_parent (struct window *w, Lisp_Object val) |
188 | { | |
189 | w->parent = val; | |
190 | } | |
b0ab8123 | 191 | static void |
e8c17b81 PE |
192 | wset_pointm (struct window *w, Lisp_Object val) |
193 | { | |
194 | w->pointm = val; | |
195 | } | |
b0ab8123 | 196 | static void |
e8c17b81 PE |
197 | wset_right_fringe_width (struct window *w, Lisp_Object val) |
198 | { | |
199 | w->right_fringe_width = val; | |
200 | } | |
b0ab8123 | 201 | static void |
e8c17b81 PE |
202 | wset_right_margin_cols (struct window *w, Lisp_Object val) |
203 | { | |
204 | w->right_margin_cols = val; | |
205 | } | |
b0ab8123 | 206 | static void |
e8c17b81 PE |
207 | wset_scroll_bar_width (struct window *w, Lisp_Object val) |
208 | { | |
209 | w->scroll_bar_width = val; | |
210 | } | |
b0ab8123 | 211 | static void |
e8c17b81 PE |
212 | wset_start (struct window *w, Lisp_Object val) |
213 | { | |
214 | w->start = val; | |
215 | } | |
b0ab8123 | 216 | static void |
e8c17b81 PE |
217 | wset_temslot (struct window *w, Lisp_Object val) |
218 | { | |
219 | w->temslot = val; | |
220 | } | |
b0ab8123 | 221 | static void |
e8c17b81 PE |
222 | wset_vchild (struct window *w, Lisp_Object val) |
223 | { | |
224 | w->vchild = val; | |
225 | } | |
b0ab8123 | 226 | static void |
e8c17b81 PE |
227 | wset_vertical_scroll_bar_type (struct window *w, Lisp_Object val) |
228 | { | |
229 | w->vertical_scroll_bar_type = val; | |
230 | } | |
b0ab8123 | 231 | static void |
e8c17b81 PE |
232 | wset_window_parameters (struct window *w, Lisp_Object val) |
233 | { | |
234 | w->window_parameters = val; | |
235 | } | |
236 | ||
52162052 MR |
237 | struct window * |
238 | decode_live_window (register Lisp_Object window) | |
f230ecc9 MR |
239 | { |
240 | if (NILP (window)) | |
241 | return XWINDOW (selected_window); | |
c876b227 | 242 | |
f230ecc9 MR |
243 | CHECK_LIVE_WINDOW (window); |
244 | return XWINDOW (window); | |
245 | } | |
246 | ||
b9e9df47 | 247 | struct window * |
f230ecc9 MR |
248 | decode_any_window (register Lisp_Object window) |
249 | { | |
6e5d1c12 CY |
250 | struct window *w; |
251 | ||
f230ecc9 MR |
252 | if (NILP (window)) |
253 | return XWINDOW (selected_window); | |
254 | ||
255 | CHECK_WINDOW (window); | |
6e5d1c12 | 256 | w = XWINDOW (window); |
6e5d1c12 | 257 | return w; |
f230ecc9 | 258 | } |
666e158e | 259 | |
b52d6985 | 260 | static struct window * |
52162052 MR |
261 | decode_valid_window (register Lisp_Object window) |
262 | { | |
263 | struct window *w; | |
264 | ||
265 | if (NILP (window)) | |
266 | return XWINDOW (selected_window); | |
267 | ||
268 | CHECK_VALID_WINDOW (window); | |
269 | w = XWINDOW (window); | |
270 | return w; | |
271 | } | |
272 | ||
7ab12479 | 273 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, |
f230ecc9 | 274 | doc: /* Return t if OBJECT is a window and nil otherwise. */) |
5842a27b | 275 | (Lisp_Object object) |
7ab12479 | 276 | { |
413430c5 | 277 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
278 | } |
279 | ||
52162052 MR |
280 | DEFUN ("window-valid-p", Fwindow_valid_p, Swindow_valid_p, 1, 1, 0, |
281 | doc: /* Return t if OBJECT is a valid window and nil otherwise. | |
282 | A valid window is either a window that displays a buffer or an internal | |
283 | window. Deleted windows are not live. */) | |
284 | (Lisp_Object object) | |
285 | { | |
286 | return WINDOW_VALID_P (object) ? Qt : Qnil; | |
287 | } | |
288 | ||
806b4d9b | 289 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
f230ecc9 | 290 | doc: /* Return t if OBJECT is a live window and nil otherwise. |
49745b39 CY |
291 | A live window is a window that displays a buffer. |
292 | Internal windows and deleted windows are not live. */) | |
5842a27b | 293 | (Lisp_Object object) |
605be8af | 294 | { |
9e571f49 | 295 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af | 296 | } |
727e958e MR |
297 | \f |
298 | /* Frames and windows. */ | |
299 | DEFUN ("window-frame", Fwindow_frame, Swindow_frame, 1, 1, 0, | |
300 | doc: /* Return the frame that window WINDOW is on. | |
52162052 | 301 | WINDOW must be a valid window and defaults to the selected one. */) |
727e958e MR |
302 | (Lisp_Object window) |
303 | { | |
52162052 | 304 | return decode_valid_window (window)->frame; |
727e958e MR |
305 | } |
306 | ||
307 | DEFUN ("frame-root-window", Fframe_root_window, Sframe_root_window, 0, 1, 0, | |
87e68db4 JB |
308 | doc: /* Return the root window of FRAME-OR-WINDOW. |
309 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
49745b39 CY |
310 | With a frame argument, return that frame's root window. |
311 | With a window argument, return the root window of that window's frame. */) | |
727e958e MR |
312 | (Lisp_Object frame_or_window) |
313 | { | |
314 | Lisp_Object window; | |
315 | ||
316 | if (NILP (frame_or_window)) | |
e69b0960 | 317 | window = SELECTED_FRAME ()->root_window; |
52162052 MR |
318 | else if (WINDOW_VALID_P (frame_or_window)) |
319 | window = XFRAME (XWINDOW (frame_or_window)->frame)->root_window; | |
727e958e MR |
320 | else |
321 | { | |
322 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 323 | window = XFRAME (frame_or_window)->root_window; |
727e958e MR |
324 | } |
325 | ||
326 | return window; | |
327 | } | |
328 | ||
329 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, | |
49745b39 CY |
330 | doc: /* Return the minibuffer window for frame FRAME. |
331 | If FRAME is omitted or nil, it defaults to the selected frame. */) | |
727e958e MR |
332 | (Lisp_Object frame) |
333 | { | |
334 | if (NILP (frame)) | |
335 | frame = selected_frame; | |
336 | CHECK_LIVE_FRAME (frame); | |
337 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); | |
338 | } | |
339 | ||
340 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, | |
341 | Swindow_minibuffer_p, 0, 1, 0, | |
342 | doc: /* Return non-nil if WINDOW is a minibuffer window. | |
52162052 | 343 | WINDOW must be a valid window and defaults to the selected one. */) |
727e958e MR |
344 | (Lisp_Object window) |
345 | { | |
52162052 | 346 | return MINI_WINDOW_P (decode_valid_window (window)) ? Qt : Qnil; |
727e958e MR |
347 | } |
348 | ||
349 | /* Don't move this to window.el - this must be a safe routine. */ | |
350 | DEFUN ("frame-first-window", Fframe_first_window, Sframe_first_window, 0, 1, 0, | |
87e68db4 JB |
351 | doc: /* Return the topmost, leftmost live window on FRAME-OR-WINDOW. |
352 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
52162052 MR |
353 | Else if FRAME-OR-WINDOW denotes a valid window, return the first window |
354 | of that window's frame. If FRAME-OR-WINDOW denotes a live frame, return | |
727e958e MR |
355 | the first window of that frame. */) |
356 | (Lisp_Object frame_or_window) | |
357 | { | |
358 | Lisp_Object window; | |
359 | ||
360 | if (NILP (frame_or_window)) | |
e69b0960 | 361 | window = SELECTED_FRAME ()->root_window; |
52162052 | 362 | else if (WINDOW_VALID_P (frame_or_window)) |
e69b0960 | 363 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window; |
727e958e MR |
364 | else |
365 | { | |
366 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 367 | window = XFRAME (frame_or_window)->root_window; |
727e958e MR |
368 | } |
369 | ||
d3d50620 | 370 | while (NILP (XWINDOW (window)->buffer)) |
727e958e | 371 | { |
d3d50620 DA |
372 | if (! NILP (XWINDOW (window)->hchild)) |
373 | window = XWINDOW (window)->hchild; | |
374 | else if (! NILP (XWINDOW (window)->vchild)) | |
375 | window = XWINDOW (window)->vchild; | |
727e958e | 376 | else |
1088b922 | 377 | emacs_abort (); |
727e958e MR |
378 | } |
379 | ||
380 | return window; | |
381 | } | |
382 | ||
383 | DEFUN ("frame-selected-window", Fframe_selected_window, | |
384 | Sframe_selected_window, 0, 1, 0, | |
87e68db4 JB |
385 | doc: /* Return the selected window of FRAME-OR-WINDOW. |
386 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
52162052 MR |
387 | Else if FRAME-OR-WINDOW denotes a valid window, return the selected |
388 | window of that window's frame. If FRAME-OR-WINDOW denotes a live frame, | |
389 | return the selected window of that frame. */) | |
727e958e MR |
390 | (Lisp_Object frame_or_window) |
391 | { | |
392 | Lisp_Object window; | |
393 | ||
394 | if (NILP (frame_or_window)) | |
e69b0960 | 395 | window = SELECTED_FRAME ()->selected_window; |
52162052 | 396 | else if (WINDOW_VALID_P (frame_or_window)) |
e69b0960 | 397 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->selected_window; |
727e958e MR |
398 | else |
399 | { | |
400 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 401 | window = XFRAME (frame_or_window)->selected_window; |
727e958e MR |
402 | } |
403 | ||
404 | return window; | |
405 | } | |
406 | ||
407 | DEFUN ("set-frame-selected-window", Fset_frame_selected_window, | |
408 | Sset_frame_selected_window, 2, 3, 0, | |
409 | doc: /* Set selected window of FRAME to WINDOW. | |
410 | FRAME must be a live frame and defaults to the selected one. If FRAME | |
411 | is the selected frame, this makes WINDOW the selected window. Optional | |
412 | argument NORECORD non-nil means to neither change the order of recently | |
413 | selected windows nor the buffer list. WINDOW must denote a live window. | |
414 | Return WINDOW. */) | |
415 | (Lisp_Object frame, Lisp_Object window, Lisp_Object norecord) | |
416 | { | |
417 | if (NILP (frame)) | |
418 | frame = selected_frame; | |
419 | ||
420 | CHECK_LIVE_FRAME (frame); | |
421 | CHECK_LIVE_WINDOW (window); | |
422 | ||
423 | if (! EQ (frame, WINDOW_FRAME (XWINDOW (window)))) | |
424 | error ("In `set-frame-selected-window', WINDOW is not on FRAME"); | |
425 | ||
426 | if (EQ (frame, selected_frame)) | |
427 | return Fselect_window (window, norecord); | |
428 | else | |
f00af5b1 PE |
429 | { |
430 | fset_selected_window (XFRAME (frame), window); | |
431 | return window; | |
432 | } | |
727e958e MR |
433 | } |
434 | ||
435 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
436 | doc: /* Return the selected window. | |
437 | The selected window is the window in which the standard cursor for | |
438 | selected windows appears and to which many commands apply. */) | |
439 | (void) | |
440 | { | |
441 | return selected_window; | |
442 | } | |
443 | ||
9397e56f MR |
444 | int window_select_count; |
445 | ||
727e958e MR |
446 | /* If select_window is called with inhibit_point_swap non-zero it will |
447 | not store point of the old selected window's buffer back into that | |
448 | window's pointm slot. This is needed by Fset_window_configuration to | |
449 | avoid that the display routine is called with selected_window set to | |
450 | Qnil causing a subsequent crash. */ | |
451 | static Lisp_Object | |
452 | select_window (Lisp_Object window, Lisp_Object norecord, int inhibit_point_swap) | |
453 | { | |
454 | register struct window *w; | |
455 | register struct window *ow; | |
456 | struct frame *sf; | |
457 | ||
458 | CHECK_LIVE_WINDOW (window); | |
459 | ||
460 | w = XWINDOW (window); | |
461 | w->frozen_window_start_p = 0; | |
462 | ||
463 | if (NILP (norecord)) | |
464 | { | |
45942c7d | 465 | w->use_time = ++window_select_count; |
d3d50620 | 466 | record_buffer (w->buffer); |
727e958e MR |
467 | } |
468 | ||
734fbd86 MR |
469 | /* Make the selected window's buffer current. */ |
470 | Fset_buffer (w->buffer); | |
471 | ||
727e958e MR |
472 | if (EQ (window, selected_window) && !inhibit_point_swap) |
473 | return window; | |
474 | ||
475 | sf = SELECTED_FRAME (); | |
476 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
477 | { | |
f00af5b1 | 478 | fset_selected_window (XFRAME (WINDOW_FRAME (w)), window); |
727e958e MR |
479 | /* Use this rather than Fhandle_switch_frame |
480 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
481 | move around in the state where a minibuffer in a separate | |
482 | frame is active. */ | |
483 | Fselect_frame (WINDOW_FRAME (w), norecord); | |
484 | /* Fselect_frame called us back so we've done all the work already. */ | |
485 | eassert (EQ (window, selected_window)); | |
486 | return window; | |
487 | } | |
488 | else | |
f00af5b1 | 489 | fset_selected_window (sf, window); |
727e958e | 490 | |
734fbd86 MR |
491 | /* Store the old selected window's buffer's point in pointm of the old |
492 | selected window. It belongs to that window, and when the window is | |
493 | not selected, must be in the window. */ | |
727e958e MR |
494 | if (!inhibit_point_swap) |
495 | { | |
496 | ow = XWINDOW (selected_window); | |
d3d50620 DA |
497 | if (! NILP (ow->buffer)) |
498 | set_marker_both (ow->pointm, ow->buffer, | |
499 | BUF_PT (XBUFFER (ow->buffer)), | |
500 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
727e958e MR |
501 | } |
502 | ||
503 | selected_window = window; | |
39eb03f1 | 504 | bset_last_selected_window (XBUFFER (w->buffer), window); |
727e958e MR |
505 | |
506 | /* Go to the point recorded in the window. | |
507 | This is important when the buffer is in more | |
508 | than one window. It also matters when | |
509 | redisplay_window has altered point after scrolling, | |
510 | because it makes the change only in the window. */ | |
511 | { | |
d3d50620 | 512 | register ptrdiff_t new_point = marker_position (w->pointm); |
727e958e MR |
513 | if (new_point < BEGV) |
514 | SET_PT (BEGV); | |
515 | else if (new_point > ZV) | |
516 | SET_PT (ZV); | |
517 | else | |
518 | SET_PT (new_point); | |
519 | } | |
520 | ||
521 | windows_or_buffers_changed++; | |
522 | return window; | |
523 | } | |
524 | ||
525 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, | |
526 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. | |
527 | Also make WINDOW's buffer current and make WINDOW the frame's selected | |
528 | window. Return WINDOW. | |
529 | ||
530 | Optional second arg NORECORD non-nil means do not put this buffer at the | |
531 | front of the buffer list and do not make this window the most recently | |
532 | selected one. | |
605be8af | 533 | |
727e958e MR |
534 | Note that the main editor command loop sets the current buffer to the |
535 | buffer of the selected window before each command. */) | |
536 | (register Lisp_Object window, Lisp_Object norecord) | |
537 | { | |
538 | return select_window (window, norecord, 0); | |
539 | } | |
540 | \f | |
bf60a96b | 541 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
49745b39 CY |
542 | doc: /* Return the buffer displayed in window WINDOW. |
543 | If WINDOW is omitted or nil, it defaults to the selected window. | |
544 | Return nil for an internal window or a deleted window. */) | |
bf60a96b MR |
545 | (Lisp_Object window) |
546 | { | |
d3d50620 | 547 | return decode_any_window (window)->buffer; |
bf60a96b MR |
548 | } |
549 | ||
550 | DEFUN ("window-parent", Fwindow_parent, Swindow_parent, 0, 1, 0, | |
49745b39 | 551 | doc: /* Return the parent window of window WINDOW. |
52162052 | 552 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 | 553 | Return nil for a window with no parent (e.g. a root window). */) |
bf60a96b MR |
554 | (Lisp_Object window) |
555 | { | |
52162052 | 556 | return decode_valid_window (window)->parent; |
bf60a96b MR |
557 | } |
558 | ||
49745b39 CY |
559 | DEFUN ("window-top-child", Fwindow_top_child, Swindow_top_child, 1, 1, 0, |
560 | doc: /* Return the topmost child window of window WINDOW. | |
52162052 | 561 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 CY |
562 | Return nil if WINDOW is a live window (live windows have no children). |
563 | Return nil if WINDOW is an internal window whose children form a | |
564 | horizontal combination. */) | |
bf60a96b MR |
565 | (Lisp_Object window) |
566 | { | |
49745b39 | 567 | CHECK_WINDOW (window); |
52162052 | 568 | return decode_valid_window (window)->vchild; |
bf60a96b MR |
569 | } |
570 | ||
49745b39 CY |
571 | DEFUN ("window-left-child", Fwindow_left_child, Swindow_left_child, 1, 1, 0, |
572 | doc: /* Return the leftmost child window of window WINDOW. | |
52162052 | 573 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 CY |
574 | Return nil if WINDOW is a live window (live windows have no children). |
575 | Return nil if WINDOW is an internal window whose children form a | |
576 | vertical combination. */) | |
bf60a96b MR |
577 | (Lisp_Object window) |
578 | { | |
49745b39 | 579 | CHECK_WINDOW (window); |
52162052 | 580 | return decode_valid_window (window)->hchild; |
bf60a96b MR |
581 | } |
582 | ||
d68443dc | 583 | DEFUN ("window-next-sibling", Fwindow_next_sibling, Swindow_next_sibling, 0, 1, 0, |
49745b39 | 584 | doc: /* Return the next sibling window of window WINDOW. |
52162052 | 585 | WINDOW must be a valid window and defaults to the selected one. |
d68443dc | 586 | Return nil if WINDOW has no next sibling. */) |
bf60a96b MR |
587 | (Lisp_Object window) |
588 | { | |
52162052 | 589 | return decode_valid_window (window)->next; |
bf60a96b MR |
590 | } |
591 | ||
d68443dc | 592 | DEFUN ("window-prev-sibling", Fwindow_prev_sibling, Swindow_prev_sibling, 0, 1, 0, |
49745b39 | 593 | doc: /* Return the previous sibling window of window WINDOW. |
52162052 | 594 | WINDOW must be a valid window and defaults to the selected one. |
d68443dc | 595 | Return nil if WINDOW has no previous sibling. */) |
bf60a96b MR |
596 | (Lisp_Object window) |
597 | { | |
52162052 | 598 | return decode_valid_window (window)->prev; |
bf60a96b | 599 | } |
67492200 | 600 | |
df05a53c | 601 | DEFUN ("window-combination-limit", Fwindow_combination_limit, Swindow_combination_limit, 1, 1, 0, |
b6f67890 | 602 | doc: /* Return combination limit of window WINDOW. |
52162052 | 603 | WINDOW must be a valid window and defaults to the selected one. |
be7f5545 | 604 | If the return value is nil, child windows of WINDOW can be recombined with |
b6f67890 | 605 | WINDOW's siblings. A return value of t means that child windows of |
496e208e | 606 | WINDOW are never \(re-)combined with WINDOW's siblings. */) |
496e208e | 607 | (Lisp_Object window) |
7ab12479 | 608 | { |
52162052 | 609 | return decode_valid_window (window)->combination_limit; |
7ab12479 | 610 | } |
53bb6b99 | 611 | |
b6f67890 | 612 | DEFUN ("set-window-combination-limit", Fset_window_combination_limit, Sset_window_combination_limit, 2, 2, 0, |
d2999b1a | 613 | doc: /* Set combination limit of window WINDOW to LIMIT; return LIMIT. |
52162052 | 614 | WINDOW must be a valid window and defaults to the selected one. |
8e17c9ba MR |
615 | If LIMIT is nil, child windows of WINDOW can be recombined with WINDOW's |
616 | siblings. LIMIT t means that child windows of WINDOW are never | |
617 | \(re-)combined with WINDOW's siblings. Other values are reserved for | |
618 | future use. */) | |
d2999b1a | 619 | (Lisp_Object window, Lisp_Object limit) |
b3a10345 | 620 | { |
e8c17b81 PE |
621 | wset_combination_limit (decode_valid_window (window), limit); |
622 | return limit; | |
496e208e | 623 | } |
7bbc67d2 | 624 | |
496e208e | 625 | DEFUN ("window-use-time", Fwindow_use_time, Swindow_use_time, 0, 1, 0, |
49745b39 | 626 | doc: /* Return the use time of window WINDOW. |
52162052 | 627 | WINDOW must be a live window and defaults to the selected one. |
49745b39 CY |
628 | The window with the highest use time is the most recently selected |
629 | one. The window with the lowest use time is the least recently | |
630 | selected one. */) | |
496e208e MR |
631 | (Lisp_Object window) |
632 | { | |
52162052 | 633 | return make_number (decode_live_window (window)->use_time); |
496e208e | 634 | } |
abde8f8c | 635 | \f |
105216ed CY |
636 | DEFUN ("window-total-height", Fwindow_total_height, Swindow_total_height, 0, 1, 0, |
637 | doc: /* Return the total height, in lines, of window WINDOW. | |
52162052 | 638 | WINDOW must be a valid window and defaults to the selected one. |
b3a10345 | 639 | |
105216ed CY |
640 | The return value includes the mode line and header line, if any. |
641 | If WINDOW is an internal window, the total height is the height | |
642 | of the screen areas spanned by its children. | |
536833ab | 643 | |
105216ed CY |
644 | On a graphical display, this total height is reported as an |
645 | integer multiple of the default character height. */) | |
646 | (Lisp_Object window) | |
496e208e | 647 | { |
52162052 | 648 | return decode_valid_window (window)->total_lines; |
105216ed | 649 | } |
536833ab | 650 | |
105216ed CY |
651 | DEFUN ("window-total-width", Fwindow_total_width, Swindow_total_width, 0, 1, 0, |
652 | doc: /* Return the total width, in columns, of window WINDOW. | |
52162052 | 653 | WINDOW must be a valid window and defaults to the selected one. |
b3a10345 | 654 | |
105216ed CY |
655 | The return value includes any vertical dividers or scroll bars |
656 | belonging to WINDOW. If WINDOW is an internal window, the total width | |
657 | is the width of the screen areas spanned by its children. | |
b3a10345 | 658 | |
105216ed CY |
659 | On a graphical display, this total width is reported as an |
660 | integer multiple of the default character width. */) | |
496e208e MR |
661 | (Lisp_Object window) |
662 | { | |
52162052 | 663 | return decode_valid_window (window)->total_cols; |
abde8f8c | 664 | } |
b3a10345 | 665 | |
496e208e | 666 | DEFUN ("window-new-total", Fwindow_new_total, Swindow_new_total, 0, 1, 0, |
49745b39 | 667 | doc: /* Return the new total size of window WINDOW. |
52162052 | 668 | WINDOW must be a valid window and defaults to the selected one. */) |
496e208e MR |
669 | (Lisp_Object window) |
670 | { | |
52162052 | 671 | return decode_valid_window (window)->new_total; |
496e208e MR |
672 | } |
673 | ||
674 | DEFUN ("window-normal-size", Fwindow_normal_size, Swindow_normal_size, 0, 2, 0, | |
49745b39 | 675 | doc: /* Return the normal height of window WINDOW. |
52162052 | 676 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 | 677 | If HORIZONTAL is non-nil, return the normal width of WINDOW. */) |
496e208e MR |
678 | (Lisp_Object window, Lisp_Object horizontal) |
679 | { | |
52162052 | 680 | struct window *w = decode_valid_window (window); |
d3d50620 DA |
681 | |
682 | return NILP (horizontal) ? w->normal_lines : w->normal_cols; | |
496e208e MR |
683 | } |
684 | ||
685 | DEFUN ("window-new-normal", Fwindow_new_normal, Swindow_new_normal, 0, 1, 0, | |
49745b39 | 686 | doc: /* Return new normal size of window WINDOW. |
52162052 | 687 | WINDOW must be a valid window and defaults to the selected one. */) |
496e208e MR |
688 | (Lisp_Object window) |
689 | { | |
52162052 | 690 | return decode_valid_window (window)->new_normal; |
496e208e MR |
691 | } |
692 | ||
abde8f8c | 693 | DEFUN ("window-left-column", Fwindow_left_column, Swindow_left_column, 0, 1, 0, |
49745b39 | 694 | doc: /* Return left column of window WINDOW. |
105216ed CY |
695 | This is the distance, in columns, between the left edge of WINDOW and |
696 | the left edge of the frame's window area. For instance, the return | |
697 | value is 0 if there is no window to the left of WINDOW. | |
698 | ||
52162052 | 699 | WINDOW must be a valid window and defaults to the selected one. */) |
abde8f8c MR |
700 | (Lisp_Object window) |
701 | { | |
52162052 | 702 | return decode_valid_window (window)->left_col; |
abde8f8c MR |
703 | } |
704 | ||
705 | DEFUN ("window-top-line", Fwindow_top_line, Swindow_top_line, 0, 1, 0, | |
49745b39 | 706 | doc: /* Return top line of window WINDOW. |
105216ed CY |
707 | This is the distance, in lines, between the top of WINDOW and the top |
708 | of the frame's window area. For instance, the return value is 0 if | |
709 | there is no window above WINDOW. | |
710 | ||
52162052 | 711 | WINDOW must be a valid window and defaults to the selected one. */) |
abde8f8c MR |
712 | (Lisp_Object window) |
713 | { | |
52162052 | 714 | return decode_valid_window (window)->top_line; |
abde8f8c MR |
715 | } |
716 | ||
717 | /* Return the number of lines of W's body. Don't count any mode or | |
718 | header line of W. */ | |
719 | ||
46a4ce9e | 720 | static int |
abde8f8c MR |
721 | window_body_lines (struct window *w) |
722 | { | |
d3d50620 | 723 | int height = XFASTINT (w->total_lines); |
abde8f8c MR |
724 | |
725 | if (!MINI_WINDOW_P (w)) | |
726 | { | |
727 | if (WINDOW_WANTS_MODELINE_P (w)) | |
728 | --height; | |
729 | if (WINDOW_WANTS_HEADER_LINE_P (w)) | |
730 | --height; | |
731 | } | |
732 | ||
733 | return height; | |
734 | } | |
735 | ||
736 | /* Return the number of columns of W's body. Don't count columns | |
737 | occupied by the scroll bar or the vertical bar separating W from its | |
738 | right sibling. On window-systems don't count fringes or display | |
739 | margins either. */ | |
740 | ||
741 | int | |
742 | window_body_cols (struct window *w) | |
743 | { | |
744 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
d3d50620 | 745 | int width = XINT (w->total_cols); |
abde8f8c MR |
746 | |
747 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) | |
748 | /* Scroll bars occupy a few columns. */ | |
749 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); | |
750 | else if (!FRAME_WINDOW_P (f) | |
751 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
752 | /* The column of `|' characters separating side-by-side windows | |
753 | occupies one column only. */ | |
754 | width -= 1; | |
755 | ||
756 | if (FRAME_WINDOW_P (f)) | |
757 | /* On window-systems, fringes and display margins cannot be | |
758 | used for normal text. */ | |
759 | width -= (WINDOW_FRINGE_COLS (w) | |
760 | + WINDOW_LEFT_MARGIN_COLS (w) | |
761 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
762 | ||
763 | return width; | |
764 | } | |
765 | ||
105216ed CY |
766 | DEFUN ("window-body-height", Fwindow_body_height, Swindow_body_height, 0, 1, 0, |
767 | doc: /* Return the height, in lines, of WINDOW's text area. | |
52162052 | 768 | WINDOW must be a live window and defaults to the selected one. |
89bd5ee1 | 769 | |
105216ed CY |
770 | The returned height does not include the mode line or header line. |
771 | On a graphical display, the height is expressed as an integer multiple | |
772 | of the default character height. If a line at the bottom of the text | |
773 | area is only partially visible, that counts as a whole line; to | |
774 | exclude partially-visible lines, use `window-text-height'. */) | |
775 | (Lisp_Object window) | |
abde8f8c | 776 | { |
52162052 | 777 | struct window *w = decode_live_window (window); |
105216ed CY |
778 | return make_number (window_body_lines (w)); |
779 | } | |
abde8f8c | 780 | |
105216ed CY |
781 | DEFUN ("window-body-width", Fwindow_body_width, Swindow_body_width, 0, 1, 0, |
782 | doc: /* Return the width, in columns, of WINDOW's text area. | |
52162052 | 783 | WINDOW must be a live window and defaults to the selected one. |
105216ed CY |
784 | |
785 | The return value does not include any vertical dividers, fringe or | |
786 | marginal areas, or scroll bars. On a graphical display, the width is | |
787 | expressed as an integer multiple of the default character width. */) | |
788 | (Lisp_Object window) | |
789 | { | |
52162052 | 790 | struct window *w = decode_live_window (window); |
105216ed | 791 | return make_number (window_body_cols (w)); |
abde8f8c | 792 | } |
536833ab | 793 | |
7ab12479 | 794 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 | 795 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
496e208e | 796 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 797 | (Lisp_Object window) |
7ab12479 | 798 | { |
52162052 | 799 | return make_number (decode_live_window (window)->hscroll); |
7ab12479 JB |
800 | } |
801 | ||
24a212eb PE |
802 | /* Set W's horizontal scroll amount to HSCROLL clipped to a reasonable |
803 | range, returning the new amount as a fixnum. */ | |
804 | static Lisp_Object | |
805 | set_window_hscroll (struct window *w, EMACS_INT hscroll) | |
806 | { | |
4e71fd89 PE |
807 | /* Horizontal scrolling has problems with large scroll amounts. |
808 | It's too slow with long lines, and even with small lines the | |
809 | display can be messed up. For now, though, impose only the limits | |
810 | required by the internal representation: horizontal scrolling must | |
811 | fit in fixnum (since it's visible to Elisp) and into ptrdiff_t | |
812 | (since it's stored in a ptrdiff_t). */ | |
813 | ptrdiff_t hscroll_max = min (MOST_POSITIVE_FIXNUM, PTRDIFF_MAX); | |
814 | ptrdiff_t new_hscroll = clip_to_bounds (0, hscroll, hscroll_max); | |
24a212eb PE |
815 | |
816 | /* Prevent redisplay shortcuts when changing the hscroll. */ | |
817 | if (w->hscroll != new_hscroll) | |
d3d50620 | 818 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
24a212eb PE |
819 | |
820 | w->hscroll = new_hscroll; | |
821 | return make_number (new_hscroll); | |
822 | } | |
823 | ||
7ab12479 | 824 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, |
fdb82f93 | 825 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
52162052 | 826 | WINDOW must be a live window and defaults to the selected one. |
24a212eb PE |
827 | Clip the number to a reasonable value if out of range. |
828 | Return the new number. NCOL should be zero or positive. | |
ebadb1e4 EZ |
829 | |
830 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 831 | window so that the location of point moves off-window. */) |
5842a27b | 832 | (Lisp_Object window, Lisp_Object ncol) |
7ab12479 | 833 | { |
52162052 | 834 | struct window *w = decode_live_window (window); |
7ab12479 | 835 | |
b7826503 | 836 | CHECK_NUMBER (ncol); |
24a212eb | 837 | return set_window_hscroll (w, XINT (ncol)); |
7ab12479 JB |
838 | } |
839 | ||
190eb263 RS |
840 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
841 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 842 | doc: /* Return WINDOW's redisplay end trigger value. |
52162052 | 843 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 844 | See `set-window-redisplay-end-trigger' for more information. */) |
5842a27b | 845 | (Lisp_Object window) |
190eb263 | 846 | { |
52162052 | 847 | return decode_live_window (window)->redisplay_end_trigger; |
190eb263 RS |
848 | } |
849 | ||
850 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
851 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 | 852 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
52162052 MR |
853 | WINDOW must be a live window and defaults to the selected one. VALUE |
854 | should be a buffer position (typically a marker) or nil. If it is a | |
855 | buffer position, then if redisplay in WINDOW reaches a position beyond | |
856 | VALUE, the functions in `redisplay-end-trigger-functions' are called | |
857 | with two arguments: WINDOW, and the end trigger value. Afterwards the | |
858 | end-trigger value is reset to nil. */) | |
5842a27b | 859 | (register Lisp_Object window, Lisp_Object value) |
190eb263 | 860 | { |
e8c17b81 PE |
861 | wset_redisplay_end_trigger (decode_live_window (window), value); |
862 | return value; | |
190eb263 RS |
863 | } |
864 | ||
7ab12479 | 865 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 | 866 | doc: /* Return a list of the edge coordinates of WINDOW. |
52162052 MR |
867 | WINDOW must be a valid window and defaults to the selected one. |
868 | ||
869 | The returned list has the form (LEFT TOP RIGHT BOTTOM). TOP and BOTTOM | |
870 | count by lines, and LEFT and RIGHT count by columns, all relative to 0, | |
871 | 0 at top left corner of frame. | |
872 | ||
873 | RIGHT is one more than the rightmost column occupied by WINDOW. BOTTOM | |
874 | is one more than the bottommost row occupied by WINDOW. The edges | |
875 | include the space used by WINDOW's scroll bar, display margins, fringes, | |
876 | header line, and/or mode line. For the edges of just the text area, use | |
877 | `window-inside-edges'. */) | |
5842a27b | 878 | (Lisp_Object window) |
7ab12479 | 879 | { |
52162052 | 880 | register struct window *w = decode_valid_window (window); |
7ab12479 | 881 | |
949cf20f KS |
882 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
883 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), | |
884 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), | |
885 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), | |
886 | Qnil)))); | |
7ab12479 JB |
887 | } |
888 | ||
c99a9eb3 RS |
889 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
890 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
52162052 MR |
891 | WINDOW must be a valid window and defaults to the selected one. |
892 | ||
893 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
894 | 0, 0 at the top left corner of the frame. | |
b35ac83e CY |
895 | |
896 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
897 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
898 | The pixel edges include the space used by WINDOW's scroll bar, display | |
899 | margins, fringes, header line, and/or mode line. For the pixel edges | |
900 | of just the text area, use `window-inside-pixel-edges'. */) | |
5842a27b | 901 | (Lisp_Object window) |
c99a9eb3 | 902 | { |
52162052 | 903 | register struct window *w = decode_valid_window (window); |
c99a9eb3 RS |
904 | |
905 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w)), | |
906 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w)), | |
907 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w)), | |
908 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w)), | |
909 | Qnil)))); | |
910 | } | |
911 | ||
9d5405ec | 912 | static void |
5e617bc2 | 913 | calc_absolute_offset (struct window *w, int *add_x, int *add_y) |
9d5405ec | 914 | { |
d3d50620 | 915 | struct frame *f = XFRAME (w->frame); |
9d5405ec J |
916 | *add_y = f->top_pos; |
917 | #ifdef FRAME_MENUBAR_HEIGHT | |
918 | *add_y += FRAME_MENUBAR_HEIGHT (f); | |
919 | #endif | |
bfeabdc3 JD |
920 | #ifdef FRAME_TOOLBAR_TOP_HEIGHT |
921 | *add_y += FRAME_TOOLBAR_TOP_HEIGHT (f); | |
922 | #elif FRAME_TOOLBAR_HEIGHT | |
9d5405ec J |
923 | *add_y += FRAME_TOOLBAR_HEIGHT (f); |
924 | #endif | |
925 | #ifdef FRAME_NS_TITLEBAR_HEIGHT | |
926 | *add_y += FRAME_NS_TITLEBAR_HEIGHT (f); | |
927 | #endif | |
928 | *add_x = f->left_pos; | |
bfeabdc3 JD |
929 | #ifdef FRAME_TOOLBAR_LEFT_WIDTH |
930 | *add_x += FRAME_TOOLBAR_LEFT_WIDTH (f); | |
931 | #endif | |
9d5405ec J |
932 | } |
933 | ||
934 | DEFUN ("window-absolute-pixel-edges", Fwindow_absolute_pixel_edges, | |
935 | Swindow_absolute_pixel_edges, 0, 1, 0, | |
936 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
52162052 MR |
937 | WINDOW must be a valid window and defaults to the selected one. |
938 | ||
939 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
940 | 0, 0 at the top left corner of the display. | |
9d5405ec J |
941 | |
942 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
943 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
944 | The pixel edges include the space used by WINDOW's scroll bar, display | |
945 | margins, fringes, header line, and/or mode line. For the pixel edges | |
c49d071a | 946 | of just the text area, use `window-inside-absolute-pixel-edges'. */) |
5842a27b | 947 | (Lisp_Object window) |
9d5405ec | 948 | { |
52162052 | 949 | register struct window *w = decode_valid_window (window); |
9d5405ec | 950 | int add_x, add_y; |
ed3751c8 | 951 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec J |
952 | |
953 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w) + add_x), | |
954 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w) + add_y), | |
955 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w) + add_x), | |
956 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w) + add_y), | |
957 | Qnil)))); | |
958 | } | |
959 | ||
c99a9eb3 RS |
960 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, |
961 | doc: /* Return a list of the edge coordinates of WINDOW. | |
52162052 MR |
962 | WINDOW must be a live window and defaults to the selected one. |
963 | ||
964 | The returned list has the form (LEFT TOP RIGHT BOTTOM). TOP and BOTTOM | |
965 | count by lines, and LEFT and RIGHT count by columns, all relative to 0, | |
966 | 0 at top left corner of frame. | |
b35ac83e CY |
967 | |
968 | RIGHT is one more than the rightmost column of WINDOW's text area. | |
52162052 MR |
969 | BOTTOM is one more than the bottommost row of WINDOW's text area. The |
970 | inside edges do not include the space used by the WINDOW's scroll bar, | |
971 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 972 | (Lisp_Object window) |
c99a9eb3 | 973 | { |
52162052 | 974 | register struct window *w = decode_live_window (window); |
c99a9eb3 RS |
975 | |
976 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w) | |
977 | + WINDOW_LEFT_MARGIN_COLS (w) | |
978 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
979 | make_number (WINDOW_TOP_EDGE_LINE (w) | |
980 | + WINDOW_HEADER_LINE_LINES (w)), | |
f3fbdb1f | 981 | make_number (WINDOW_BOX_RIGHT_EDGE_COL (w) |
c99a9eb3 RS |
982 | - WINDOW_RIGHT_MARGIN_COLS (w) |
983 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
984 | make_number (WINDOW_BOTTOM_EDGE_LINE (w) | |
985 | - WINDOW_MODE_LINE_LINES (w))); | |
986 | } | |
987 | ||
988 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
2fbdc249 | 989 | doc: /* Return a list of the edge pixel coordinates of WINDOW's text area. |
52162052 MR |
990 | WINDOW must be a live window and defaults to the selected one. |
991 | ||
992 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
993 | (0,0) at the top left corner of the frame's window area. | |
b35ac83e CY |
994 | |
995 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
996 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
997 | The inside edges do not include the space used by WINDOW's scroll bar, | |
c99a9eb3 | 998 | display margins, fringes, header line, and/or mode line. */) |
5842a27b | 999 | (Lisp_Object window) |
c99a9eb3 | 1000 | { |
52162052 | 1001 | register struct window *w = decode_live_window (window); |
c99a9eb3 RS |
1002 | |
1003 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
1004 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
1005 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
1006 | make_number (WINDOW_TOP_EDGE_Y (w) | |
1007 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
f3fbdb1f | 1008 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) |
c99a9eb3 RS |
1009 | - WINDOW_RIGHT_MARGIN_WIDTH (w) |
1010 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
1011 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
1012 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
1013 | } | |
1014 | ||
9d5405ec J |
1015 | DEFUN ("window-inside-absolute-pixel-edges", |
1016 | Fwindow_inside_absolute_pixel_edges, | |
1017 | Swindow_inside_absolute_pixel_edges, 0, 1, 0, | |
2fbdc249 | 1018 | doc: /* Return a list of the edge pixel coordinates of WINDOW's text area. |
52162052 MR |
1019 | WINDOW must be a live window and defaults to the selected one. |
1020 | ||
1021 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
1022 | (0,0) at the top left corner of the frame's window area. | |
9d5405ec J |
1023 | |
1024 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
1025 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
1026 | The inside edges do not include the space used by WINDOW's scroll bar, | |
1027 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 1028 | (Lisp_Object window) |
9d5405ec | 1029 | { |
52162052 | 1030 | register struct window *w = decode_live_window (window); |
9d5405ec | 1031 | int add_x, add_y; |
ed3751c8 | 1032 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec J |
1033 | |
1034 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
1035 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
1036 | + WINDOW_LEFT_FRINGE_WIDTH (w) + add_x), | |
1037 | make_number (WINDOW_TOP_EDGE_Y (w) | |
1038 | + WINDOW_HEADER_LINE_HEIGHT (w) + add_y), | |
1039 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) | |
1040 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
1041 | - WINDOW_RIGHT_FRINGE_WIDTH (w) + add_x), | |
1042 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
1043 | - WINDOW_MODE_LINE_HEIGHT (w) + add_y)); | |
1044 | } | |
1045 | ||
9173a8fb | 1046 | /* Test if the character at column X, row Y is within window W. |
341f3858 | 1047 | If it is not, return ON_NOTHING; |
9173a8fb | 1048 | if it is in the window's text area, return ON_TEXT; |
341f3858 | 1049 | if it is on the window's modeline, return ON_MODE_LINE; |
d5783c40 | 1050 | if it is on the border between the window and its right sibling, |
341f3858 | 1051 | return ON_VERTICAL_BORDER. |
9173a8fb | 1052 | if it is on a scroll bar, return ON_SCROLL_BAR. |
341f3858 | 1053 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 1054 | if it is in left or right fringe of the window, |
9173a8fb | 1055 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE; |
49b996e7 | 1056 | if it is in the marginal area to the left/right of the window, |
9173a8fb | 1057 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN. |
5500c422 GM |
1058 | |
1059 | X and Y are frame relative pixel coordinates. */ | |
1060 | ||
7442878f | 1061 | static enum window_part |
9173a8fb | 1062 | coordinates_in_window (register struct window *w, int x, int y) |
d5783c40 | 1063 | { |
b0228ace | 1064 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
7442878f | 1065 | enum window_part part; |
949cf20f | 1066 | int ux = FRAME_COLUMN_WIDTH (f); |
c7b08b0d MR |
1067 | int left_x = WINDOW_LEFT_EDGE_X (w); |
1068 | int right_x = WINDOW_RIGHT_EDGE_X (w); | |
1069 | int top_y = WINDOW_TOP_EDGE_Y (w); | |
1070 | int bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
dad75588 GM |
1071 | /* The width of the area where the vertical line can be dragged. |
1072 | (Between mode lines for instance. */ | |
1073 | int grabbable_width = ux; | |
949cf20f | 1074 | int lmargin_width, rmargin_width, text_left, text_right; |
9173a8fb | 1075 | |
c7b08b0d MR |
1076 | /* Outside any interesting row or column? */ |
1077 | if (y < top_y || y >= bottom_y || x < left_x || x >= right_x) | |
9173a8fb | 1078 | return ON_NOTHING; |
b0228ace | 1079 | |
c7b08b0d MR |
1080 | /* On the mode line or header line? */ |
1081 | if ((WINDOW_WANTS_MODELINE_P (w) | |
1082 | && y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w) | |
1083 | && (part = ON_MODE_LINE)) | |
1084 | || (WINDOW_WANTS_HEADER_LINE_P (w) | |
1085 | && y < top_y + CURRENT_HEADER_LINE_HEIGHT (w) | |
1086 | && (part = ON_HEADER_LINE))) | |
1087 | { | |
1088 | /* If it's under/over the scroll bar portion of the mode/header | |
1089 | line, say it's on the vertical line. That's to be able to | |
1090 | resize windows horizontally in case we're using toolkit scroll | |
1091 | bars. Note: If scrollbars are on the left, the window that | |
1092 | must be eventually resized is that on the left of WINDOW. */ | |
1093 | if ((WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) | |
1094 | && !WINDOW_LEFTMOST_P (w) | |
1095 | && eabs (x - left_x) < grabbable_width) | |
1096 | || (!WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) | |
1097 | && !WINDOW_RIGHTMOST_P (w) | |
1098 | && eabs (x - right_x) < grabbable_width)) | |
1099 | return ON_VERTICAL_BORDER; | |
1100 | else | |
1101 | return part; | |
1102 | } | |
1103 | ||
466539bc EZ |
1104 | /* In what's below, we subtract 1 when computing right_x because we |
1105 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
1106 | if (w->pseudo_window_p) |
1107 | { | |
1108 | left_x = 0; | |
949cf20f | 1109 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
5500c422 GM |
1110 | } |
1111 | else | |
1112 | { | |
949cf20f KS |
1113 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
1114 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
5500c422 | 1115 | } |
37962e60 | 1116 | |
949cf20f | 1117 | /* Outside any interesting column? */ |
9173a8fb CY |
1118 | if (x < left_x || x > right_x) |
1119 | return ON_SCROLL_BAR; | |
949cf20f KS |
1120 | |
1121 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
1122 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 1123 | |
949cf20f KS |
1124 | text_left = window_box_left (w, TEXT_AREA); |
1125 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
1126 | ||
1127 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 1128 | { |
447e9da0 | 1129 | if (!w->pseudo_window_p |
949cf20f | 1130 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 1131 | && !WINDOW_RIGHTMOST_P (w) |
9173a8fb CY |
1132 | && (eabs (x - right_x) < grabbable_width)) |
1133 | return ON_VERTICAL_BORDER; | |
fbad6f9a | 1134 | } |
9173a8fb CY |
1135 | /* Need to say "x > right_x" rather than >=, since on character |
1136 | terminals, the vertical line's x coordinate is right_x. */ | |
1137 | else if (!w->pseudo_window_p | |
1138 | && !WINDOW_RIGHTMOST_P (w) | |
1139 | && x > right_x - ux) | |
1140 | return ON_VERTICAL_BORDER; | |
1141 | ||
1142 | if (x < text_left) | |
949cf20f KS |
1143 | { |
1144 | if (lmargin_width > 0 | |
1145 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1146 | ? (x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) |
1147 | : (x < left_x + lmargin_width))) | |
1148 | return ON_LEFT_MARGIN; | |
1149 | ||
949cf20f KS |
1150 | return ON_LEFT_FRINGE; |
1151 | } | |
1152 | ||
9173a8fb | 1153 | if (x >= text_right) |
949cf20f KS |
1154 | { |
1155 | if (rmargin_width > 0 | |
1156 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1157 | ? (x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) |
1158 | : (x >= right_x - rmargin_width))) | |
1159 | return ON_RIGHT_MARGIN; | |
1160 | ||
949cf20f KS |
1161 | return ON_RIGHT_FRINGE; |
1162 | } | |
1163 | ||
1164 | /* Everything special ruled out - must be on text area */ | |
949cf20f | 1165 | return ON_TEXT; |
d5783c40 JB |
1166 | } |
1167 | ||
9173a8fb CY |
1168 | /* Take X is the frame-relative pixel x-coordinate, and return the |
1169 | x-coordinate relative to part PART of window W. */ | |
1170 | int | |
1171 | window_relative_x_coord (struct window *w, enum window_part part, int x) | |
1172 | { | |
1173 | int left_x = (w->pseudo_window_p) ? 0 : WINDOW_BOX_LEFT_EDGE_X (w); | |
1174 | ||
1175 | switch (part) | |
1176 | { | |
1177 | case ON_TEXT: | |
1178 | return x - window_box_left (w, TEXT_AREA); | |
1179 | ||
1180 | case ON_LEFT_FRINGE: | |
1181 | return x - left_x; | |
1182 | ||
1183 | case ON_RIGHT_FRINGE: | |
1184 | return x - left_x - WINDOW_LEFT_FRINGE_WIDTH (w); | |
1185 | ||
1186 | case ON_LEFT_MARGIN: | |
1187 | return (x - left_x | |
1188 | - ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1189 | ? WINDOW_LEFT_FRINGE_WIDTH (w) : 0)); | |
1190 | ||
1191 | case ON_RIGHT_MARGIN: | |
1192 | return (x + 1 | |
1193 | - ((w->pseudo_window_p) | |
1194 | ? WINDOW_TOTAL_WIDTH (w) | |
1195 | : WINDOW_BOX_RIGHT_EDGE_X (w)) | |
1196 | + window_box_width (w, RIGHT_MARGIN_AREA) | |
1197 | + ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1198 | ? WINDOW_RIGHT_FRINGE_WIDTH (w) : 0)); | |
1199 | } | |
1200 | ||
1201 | /* ON_SCROLL_BAR, ON_NOTHING, and ON_VERTICAL_BORDER: */ | |
1202 | return 0; | |
1203 | } | |
1204 | ||
b0228ace | 1205 | |
d5783c40 | 1206 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
1207 | Scoordinates_in_window_p, 2, 2, 0, |
1208 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
52162052 | 1209 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1210 | COORDINATES is a cons of the form (X . Y), X and Y being distances |
1211 | measured in characters from the upper-left corner of the frame. | |
23fe745a | 1212 | \(0 . 0) denotes the character in the upper left corner of the |
fdb82f93 PJ |
1213 | frame. |
1214 | If COORDINATES are in the text portion of WINDOW, | |
1215 | the coordinates relative to the window are returned. | |
1216 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
1217 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
1218 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
1219 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 1220 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
1221 | `vertical-line' is returned. |
1222 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
1223 | or `right-margin' is returned. */) | |
5842a27b | 1224 | (register Lisp_Object coordinates, Lisp_Object window) |
d5783c40 | 1225 | { |
5500c422 GM |
1226 | struct window *w; |
1227 | struct frame *f; | |
d5783c40 | 1228 | int x, y; |
5500c422 | 1229 | Lisp_Object lx, ly; |
d5783c40 | 1230 | |
52162052 | 1231 | w = decode_live_window (window); |
d3d50620 | 1232 | f = XFRAME (w->frame); |
b7826503 | 1233 | CHECK_CONS (coordinates); |
5500c422 GM |
1234 | lx = Fcar (coordinates); |
1235 | ly = Fcdr (coordinates); | |
b7826503 PJ |
1236 | CHECK_NUMBER_OR_FLOAT (lx); |
1237 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
1238 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
1239 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 | 1240 | |
9173a8fb | 1241 | switch (coordinates_in_window (w, x, y)) |
d5783c40 | 1242 | { |
7442878f | 1243 | case ON_NOTHING: |
d5783c40 JB |
1244 | return Qnil; |
1245 | ||
7442878f | 1246 | case ON_TEXT: |
9173a8fb CY |
1247 | /* Convert X and Y to window relative pixel coordinates, and |
1248 | return the canonical char units. */ | |
1249 | x -= window_box_left (w, TEXT_AREA); | |
1250 | y -= WINDOW_TOP_EDGE_Y (w); | |
949cf20f KS |
1251 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
1252 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 1253 | |
7442878f | 1254 | case ON_MODE_LINE: |
d5783c40 | 1255 | return Qmode_line; |
37962e60 | 1256 | |
7442878f | 1257 | case ON_VERTICAL_BORDER: |
e5d77022 | 1258 | return Qvertical_line; |
d5783c40 | 1259 | |
7442878f | 1260 | case ON_HEADER_LINE: |
045dee35 | 1261 | return Qheader_line; |
5500c422 | 1262 | |
7442878f GM |
1263 | case ON_LEFT_FRINGE: |
1264 | return Qleft_fringe; | |
177c0ea7 | 1265 | |
7442878f GM |
1266 | case ON_RIGHT_FRINGE: |
1267 | return Qright_fringe; | |
fbad6f9a | 1268 | |
49b996e7 GM |
1269 | case ON_LEFT_MARGIN: |
1270 | return Qleft_margin; | |
177c0ea7 | 1271 | |
49b996e7 GM |
1272 | case ON_RIGHT_MARGIN: |
1273 | return Qright_margin; | |
1274 | ||
6487f669 RS |
1275 | case ON_SCROLL_BAR: |
1276 | /* Historically we are supposed to return nil in this case. */ | |
1277 | return Qnil; | |
1278 | ||
d5783c40 | 1279 | default: |
1088b922 | 1280 | emacs_abort (); |
d5783c40 JB |
1281 | } |
1282 | } | |
1283 | ||
67492200 GM |
1284 | |
1285 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
1286 | Check if window W contains coordinates specified by USER_DATA which |
1287 | is actually a pointer to a struct check_window_data CW. | |
1288 | ||
1289 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
1290 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 1291 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
1292 | zero from this function to stop iterating over windows. */ |
1293 | ||
1294 | struct check_window_data | |
1295 | { | |
1296 | Lisp_Object *window; | |
9173a8fb | 1297 | int x, y; |
341f3858 | 1298 | enum window_part *part; |
f95464e4 | 1299 | }; |
67492200 GM |
1300 | |
1301 | static int | |
971de7fb | 1302 | check_window_containing (struct window *w, void *user_data) |
67492200 | 1303 | { |
f95464e4 | 1304 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
1305 | enum window_part found; |
1306 | int continue_p = 1; | |
67492200 | 1307 | |
f95464e4 | 1308 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1309 | if (found != ON_NOTHING) |
67492200 | 1310 | { |
341f3858 | 1311 | *cw->part = found; |
f95464e4 | 1312 | XSETWINDOW (*cw->window, w); |
7442878f | 1313 | continue_p = 0; |
67492200 | 1314 | } |
177c0ea7 | 1315 | |
7442878f | 1316 | return continue_p; |
67492200 GM |
1317 | } |
1318 | ||
1319 | ||
5500c422 | 1320 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1321 | return it as a Lisp_Object. |
1322 | ||
1323 | If X, Y is on one of the window's special `window_part' elements, | |
9173a8fb | 1324 | set *PART to the id of that element. |
949cf20f | 1325 | |
341f3858 | 1326 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1327 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1328 | ||
1329 | This function was previously implemented with a loop cycling over | |
1330 | windows with Fnext_window, and starting with the frame's selected | |
1331 | window. It turned out that this doesn't work with an | |
1332 | implementation of next_window using Vwindow_list, because | |
1333 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1334 | tree of F when this function is called asynchronously from | |
1335 | note_mouse_highlight. The original loop didn't terminate in this | |
1336 | case. */ | |
5500c422 | 1337 | |
7ab12479 | 1338 | Lisp_Object |
9173a8fb CY |
1339 | window_from_coordinates (struct frame *f, int x, int y, |
1340 | enum window_part *part, int tool_bar_p) | |
7ab12479 | 1341 | { |
67492200 | 1342 | Lisp_Object window; |
f95464e4 | 1343 | struct check_window_data cw; |
341f3858 KS |
1344 | enum window_part dummy; |
1345 | ||
1346 | if (part == 0) | |
1347 | part = &dummy; | |
5500c422 | 1348 | |
67492200 | 1349 | window = Qnil; |
9173a8fb | 1350 | cw.window = &window, cw.x = x, cw.y = y; cw.part = part; |
f95464e4 | 1351 | foreach_window (f, check_window_containing, &cw); |
177c0ea7 | 1352 | |
67492200 GM |
1353 | /* If not found above, see if it's in the tool bar window, if a tool |
1354 | bar exists. */ | |
1355 | if (NILP (window) | |
1356 | && tool_bar_p | |
e69b0960 DA |
1357 | && WINDOWP (f->tool_bar_window) |
1358 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 | |
1359 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), x, y) | |
7442878f | 1360 | != ON_NOTHING)) |
5500c422 | 1361 | { |
341f3858 | 1362 | *part = ON_TEXT; |
e69b0960 | 1363 | window = f->tool_bar_window; |
5500c422 | 1364 | } |
37962e60 | 1365 | |
67492200 | 1366 | return window; |
7ab12479 JB |
1367 | } |
1368 | ||
ab17c3f2 | 1369 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 | 1370 | doc: /* Return window containing coordinates X and Y on FRAME. |
496e208e | 1371 | FRAME must be a live frame and defaults to the selected one. |
fdb82f93 PJ |
1372 | The top left corner of the frame is considered to be row 0, |
1373 | column 0. */) | |
5842a27b | 1374 | (Lisp_Object x, Lisp_Object y, Lisp_Object frame) |
7ab12479 | 1375 | { |
5500c422 | 1376 | struct frame *f; |
7ab12479 | 1377 | |
44fa5b1e | 1378 | if (NILP (frame)) |
1ae1a37d | 1379 | frame = selected_frame; |
b7826503 | 1380 | CHECK_LIVE_FRAME (frame); |
5500c422 | 1381 | f = XFRAME (frame); |
7ab12479 | 1382 | |
5500c422 | 1383 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1384 | CHECK_NUMBER_OR_FLOAT (x); |
1385 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1386 | |
177c0ea7 | 1387 | return window_from_coordinates (f, |
2c77cf3b RS |
1388 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1389 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1390 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1391 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
9173a8fb | 1392 | 0, 0); |
7ab12479 JB |
1393 | } |
1394 | ||
1395 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1396 | doc: /* Return current value of point in WINDOW. |
496e208e | 1397 | WINDOW must be a live window and defaults to the selected one. |
c85322d0 | 1398 | |
5481664a MR |
1399 | For a nonselected window, this is the value point would have if that |
1400 | window were selected. | |
1401 | ||
1402 | Note that, when WINDOW is selected, the value returned is the same as | |
1403 | that returned by `point' for WINDOW's buffer. It would be more strictly | |
1404 | correct to return the `top-level' value of `point', outside of any | |
1405 | `save-excursion' forms. But that is hard to define. */) | |
5842a27b | 1406 | (Lisp_Object window) |
7ab12479 | 1407 | { |
52162052 | 1408 | register struct window *w = decode_live_window (window); |
7ab12479 | 1409 | |
5481664a MR |
1410 | if (w == XWINDOW (selected_window)) |
1411 | return make_number (BUF_PT (XBUFFER (w->buffer))); | |
1412 | else | |
1413 | return Fmarker_position (w->pointm); | |
7ab12479 JB |
1414 | } |
1415 | ||
1416 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1417 | doc: /* Return position at which display currently starts in WINDOW. |
496e208e | 1418 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 1419 | This is updated by redisplay or by calling `set-window-start'. */) |
5842a27b | 1420 | (Lisp_Object window) |
7ab12479 | 1421 | { |
52162052 | 1422 | return Fmarker_position (decode_live_window (window)->start); |
7ab12479 JB |
1423 | } |
1424 | ||
8646118f RS |
1425 | /* This is text temporarily removed from the doc string below. |
1426 | ||
fdb82f93 PJ |
1427 | This function returns nil if the position is not currently known. |
1428 | That happens when redisplay is preempted and doesn't finish. | |
1429 | If in that case you want to compute where the end of the window would | |
1430 | have been if redisplay had finished, do this: | |
1431 | (save-excursion | |
1432 | (goto-char (window-start window)) | |
1433 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1434 | (point))") */ |
1435 | ||
478292ed | 1436 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1437 | doc: /* Return position at which display currently ends in WINDOW. |
496e208e | 1438 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1439 | This is updated by redisplay, when it runs to completion. |
1440 | Simply changing the buffer text or setting `window-start' | |
1441 | does not update this value. | |
87e68db4 | 1442 | Return nil if there is no recorded value. (This can happen if the |
a0a37a6f | 1443 | last redisplay of WINDOW was preempted, and did not finish.) |
fdb82f93 PJ |
1444 | If UPDATE is non-nil, compute the up-to-date position |
1445 | if it isn't already recorded. */) | |
5842a27b | 1446 | (Lisp_Object window, Lisp_Object update) |
7ab12479 JB |
1447 | { |
1448 | Lisp_Object value; | |
52162052 | 1449 | struct window *w = decode_live_window (window); |
5a41ab94 | 1450 | Lisp_Object buf; |
31790df3 | 1451 | struct buffer *b; |
5a41ab94 | 1452 | |
d3d50620 | 1453 | buf = w->buffer; |
b7826503 | 1454 | CHECK_BUFFER (buf); |
b3a10345 | 1455 | b = XBUFFER (buf); |
5a41ab94 | 1456 | |
8646118f | 1457 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1458 | /* If we don't know the end position, return nil. |
1459 | The user can compute it with vertical-motion if he wants to. | |
1460 | It would be nicer to do it automatically, | |
1461 | but that's so slow that it would probably bother people. */ | |
d3d50620 | 1462 | if (NILP (w->window_end_valid)) |
7250968e | 1463 | return Qnil; |
8646118f | 1464 | #endif |
7250968e | 1465 | |
478292ed | 1466 | if (! NILP (update) |
dca778d5 | 1467 | && (windows_or_buffers_changed || NILP (w->window_end_valid)) |
41791a20 | 1468 | && !noninteractive) |
478292ed | 1469 | { |
cbc099e5 GM |
1470 | struct text_pos startp; |
1471 | struct it it; | |
b3a10345 | 1472 | struct buffer *old_buffer = NULL; |
57b3e30b | 1473 | void *itdata = NULL; |
b3a10345 KS |
1474 | |
1475 | /* Cannot use Fvertical_motion because that function doesn't | |
1476 | cope with variable-height lines. */ | |
1477 | if (b != current_buffer) | |
1478 | { | |
1479 | old_buffer = current_buffer; | |
1480 | set_buffer_internal (b); | |
1481 | } | |
2d6d9df0 GM |
1482 | |
1483 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1484 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1485 | `-l' containing a call to `rmail' with subsequent other |
1486 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1487 | rmail had already narrowed the buffer. */ |
d3d50620 | 1488 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 1489 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
d3d50620 | 1490 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 1491 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1492 | else |
d3d50620 | 1493 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
cbc099e5 | 1494 | |
57b3e30b | 1495 | itdata = bidi_shelve_cache (); |
cbc099e5 GM |
1496 | start_display (&it, w, startp); |
1497 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1498 | if (it.current_y < it.last_visible_y) |
1499 | move_it_past_eol (&it); | |
cbc099e5 | 1500 | value = make_number (IT_CHARPOS (it)); |
35928349 | 1501 | bidi_unshelve_cache (itdata, 0); |
177c0ea7 | 1502 | |
99593a9d GM |
1503 | if (old_buffer) |
1504 | set_buffer_internal (old_buffer); | |
478292ed RS |
1505 | } |
1506 | else | |
d3d50620 | 1507 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1508 | |
1509 | return value; | |
1510 | } | |
1511 | ||
a7ca3326 | 1512 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, |
a0a37a6f | 1513 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
52162052 | 1514 | WINDOW must be a live window and defaults to the selected one. |
a0a37a6f | 1515 | Return POS. */) |
5842a27b | 1516 | (Lisp_Object window, Lisp_Object pos) |
7ab12479 | 1517 | { |
52162052 | 1518 | register struct window *w = decode_live_window (window); |
7ab12479 | 1519 | |
b7826503 | 1520 | CHECK_NUMBER_COERCE_MARKER (pos); |
799417bd | 1521 | |
5481664a MR |
1522 | if (w == XWINDOW (selected_window)) |
1523 | { | |
1524 | if (XBUFFER (w->buffer) == current_buffer) | |
1525 | Fgoto_char (pos); | |
1526 | else | |
1527 | { | |
1528 | struct buffer *old_buffer = current_buffer; | |
1529 | ||
1530 | set_buffer_internal (XBUFFER (w->buffer)); | |
1531 | Fgoto_char (pos); | |
1532 | set_buffer_internal (old_buffer); | |
1533 | } | |
1534 | } | |
1535 | else | |
1536 | { | |
1537 | set_marker_restricted (w->pointm, pos, w->buffer); | |
1538 | /* We have to make sure that redisplay updates the window to show | |
1539 | the new value of point. */ | |
1540 | ++windows_or_buffers_changed; | |
1541 | } | |
177c0ea7 | 1542 | |
7ab12479 JB |
1543 | return pos; |
1544 | } | |
1545 | ||
1546 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1547 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
52162052 MR |
1548 | WINDOW must be a live window and defaults to the selected one. Return |
1549 | POS. Optional third arg NOFORCE non-nil inhibits next redisplay from | |
d653c8cc | 1550 | overriding motion of point in order to display at this exact start. */) |
5842a27b | 1551 | (Lisp_Object window, Lisp_Object pos, Lisp_Object noforce) |
7ab12479 | 1552 | { |
52162052 | 1553 | register struct window *w = decode_live_window (window); |
7ab12479 | 1554 | |
b7826503 | 1555 | CHECK_NUMBER_COERCE_MARKER (pos); |
d3d50620 | 1556 | set_marker_restricted (w->start, pos, w->buffer); |
7ab12479 | 1557 | /* this is not right, but much easier than doing what is right. */ |
c98ff5dd | 1558 | w->start_at_line_beg = 0; |
265a9e55 | 1559 | if (NILP (noforce)) |
c98ff5dd DA |
1560 | w->force_start = 1; |
1561 | w->update_mode_line = 1; | |
80b00b08 DA |
1562 | w->last_modified = 0; |
1563 | w->last_overlay_modified = 0; | |
62c07cc7 JB |
1564 | if (!EQ (window, selected_window)) |
1565 | windows_or_buffers_changed++; | |
ce7fae7d | 1566 | |
7ab12479 JB |
1567 | return pos; |
1568 | } | |
1569 | ||
496e208e MR |
1570 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
1571 | Spos_visible_in_window_p, 0, 3, 0, | |
1572 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. | |
52162052 MR |
1573 | WINDOW must be a live window and defaults to the selected one. |
1574 | ||
1575 | Return nil if that position is scrolled vertically out of view. If a | |
1576 | character is only partially visible, nil is returned, unless the | |
1577 | optional argument PARTIALLY is non-nil. If POS is only out of view | |
1578 | because of horizontal scrolling, return non-nil. If POS is t, it | |
1579 | specifies the position of the last visible glyph in WINDOW. POS | |
1580 | defaults to point in WINDOW; WINDOW defaults to the selected window. | |
496e208e MR |
1581 | |
1582 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
1583 | return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), | |
1584 | where X and Y are the pixel coordinates relative to the top left corner | |
1585 | of the window. The remaining elements are omitted if the character after | |
1586 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
1587 | off-window at the top and bottom of the row, ROWH is the height of the | |
1588 | display row, and VPOS is the row number (0-based) containing POS. */) | |
1589 | (Lisp_Object pos, Lisp_Object window, Lisp_Object partially) | |
1590 | { | |
1591 | register struct window *w; | |
1592 | register EMACS_INT posint; | |
1593 | register struct buffer *buf; | |
1594 | struct text_pos top; | |
1595 | Lisp_Object in_window = Qnil; | |
1596 | int rtop, rbot, rowh, vpos, fully_p = 1; | |
1597 | int x, y; | |
1598 | ||
52162052 | 1599 | w = decode_live_window (window); |
d3d50620 DA |
1600 | buf = XBUFFER (w->buffer); |
1601 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
496e208e MR |
1602 | |
1603 | if (EQ (pos, Qt)) | |
1604 | posint = -1; | |
1605 | else if (!NILP (pos)) | |
1606 | { | |
1607 | CHECK_NUMBER_COERCE_MARKER (pos); | |
1608 | posint = XINT (pos); | |
1609 | } | |
1610 | else if (w == XWINDOW (selected_window)) | |
1611 | posint = PT; | |
1612 | else | |
d3d50620 | 1613 | posint = XMARKER (w->pointm)->charpos; |
496e208e MR |
1614 | |
1615 | /* If position is above window start or outside buffer boundaries, | |
1616 | or if window start is out of range, position is not visible. */ | |
1617 | if ((EQ (pos, Qt) | |
1618 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
1619 | && CHARPOS (top) >= BUF_BEGV (buf) | |
1620 | && CHARPOS (top) <= BUF_ZV (buf) | |
1621 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) | |
1622 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) | |
1623 | in_window = Qt; | |
1624 | ||
1625 | if (!NILP (in_window) && !NILP (partially)) | |
1626 | { | |
1627 | Lisp_Object part = Qnil; | |
1628 | if (!fully_p) | |
1629 | part = list4 (make_number (rtop), make_number (rbot), | |
1630 | make_number (rowh), make_number (vpos)); | |
1631 | in_window = Fcons (make_number (x), | |
1632 | Fcons (make_number (y), part)); | |
1633 | } | |
1634 | ||
1635 | return in_window; | |
1636 | } | |
1637 | ||
1638 | DEFUN ("window-line-height", Fwindow_line_height, | |
1639 | Swindow_line_height, 0, 2, 0, | |
1640 | doc: /* Return height in pixels of text line LINE in window WINDOW. | |
52162052 | 1641 | WINDOW must be a live window and defaults to the selected one. |
496e208e MR |
1642 | |
1643 | Return height of current line if LINE is omitted or nil. Return height of | |
1644 | header or mode line if LINE is `header-line' or `mode-line'. | |
1645 | Otherwise, LINE is a text line number starting from 0. A negative number | |
1646 | counts from the end of the window. | |
1647 | ||
1648 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height | |
1649 | in pixels of the visible part of the line, VPOS and YPOS are the | |
1650 | vertical position in lines and pixels of the line, relative to the top | |
1651 | of the first text line, and OFFBOT is the number of off-window pixels at | |
1652 | the bottom of the text line. If there are off-window pixels at the top | |
1653 | of the (first) text line, YPOS is negative. | |
1654 | ||
1655 | Return nil if window display is not up-to-date. In that case, use | |
1656 | `pos-visible-in-window-p' to obtain the information. */) | |
1657 | (Lisp_Object line, Lisp_Object window) | |
1658 | { | |
1659 | register struct window *w; | |
1660 | register struct buffer *b; | |
1661 | struct glyph_row *row, *end_row; | |
d311d28c PE |
1662 | int max_y, crop, i; |
1663 | EMACS_INT n; | |
496e208e | 1664 | |
52162052 | 1665 | w = decode_live_window (window); |
496e208e MR |
1666 | |
1667 | if (noninteractive || w->pseudo_window_p) | |
1668 | return Qnil; | |
1669 | ||
d3d50620 DA |
1670 | CHECK_BUFFER (w->buffer); |
1671 | b = XBUFFER (w->buffer); | |
496e208e MR |
1672 | |
1673 | /* Fail if current matrix is not up-to-date. */ | |
d3d50620 | 1674 | if (NILP (w->window_end_valid) |
496e208e MR |
1675 | || current_buffer->clip_changed |
1676 | || current_buffer->prevent_redisplay_optimizations_p | |
80b00b08 DA |
1677 | || w->last_modified < BUF_MODIFF (b) |
1678 | || w->last_overlay_modified < BUF_OVERLAY_MODIFF (b)) | |
496e208e MR |
1679 | return Qnil; |
1680 | ||
1681 | if (NILP (line)) | |
1682 | { | |
1683 | i = w->cursor.vpos; | |
1684 | if (i < 0 || i >= w->current_matrix->nrows | |
1685 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
1686 | return Qnil; | |
1687 | max_y = window_text_bottom_y (w); | |
1688 | goto found_row; | |
1689 | } | |
1690 | ||
1691 | if (EQ (line, Qheader_line)) | |
1692 | { | |
1693 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) | |
1694 | return Qnil; | |
1695 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
1696 | if (!row->enabled_p) | |
1697 | return Qnil; | |
1698 | return list4 (make_number (row->height), | |
1699 | make_number (0), make_number (0), | |
1700 | make_number (0)); | |
1701 | } | |
1702 | ||
1703 | if (EQ (line, Qmode_line)) | |
1704 | { | |
1705 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); | |
1706 | if (!row->enabled_p) | |
1707 | return Qnil; | |
1708 | return list4 (make_number (row->height), | |
1709 | make_number (0), /* not accurate */ | |
1710 | make_number (WINDOW_HEADER_LINE_HEIGHT (w) | |
1711 | + window_text_bottom_y (w)), | |
1712 | make_number (0)); | |
1713 | } | |
1714 | ||
1715 | CHECK_NUMBER (line); | |
1716 | n = XINT (line); | |
1717 | ||
1718 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
1719 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
1720 | max_y = window_text_bottom_y (w); | |
1721 | i = 0; | |
1722 | ||
1723 | while ((n < 0 || i < n) | |
1724 | && row <= end_row && row->enabled_p | |
1725 | && row->y + row->height < max_y) | |
1726 | row++, i++; | |
1727 | ||
1728 | if (row > end_row || !row->enabled_p) | |
1729 | return Qnil; | |
1730 | ||
1731 | if (++n < 0) | |
1732 | { | |
1733 | if (-n > i) | |
1734 | return Qnil; | |
1735 | row += n; | |
1736 | i += n; | |
1737 | } | |
1738 | ||
1739 | found_row: | |
1740 | crop = max (0, (row->y + row->height) - max_y); | |
1741 | return list4 (make_number (row->height + min (0, row->y) - crop), | |
1742 | make_number (i), | |
1743 | make_number (row->y), | |
1744 | make_number (crop)); | |
1745 | } | |
d653c8cc | 1746 | |
a7ca3326 | 1747 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, |
d653c8cc MR |
1748 | 0, 1, 0, |
1749 | doc: /* Return non-nil when WINDOW is dedicated to its buffer. | |
12bb3111 | 1750 | More precisely, return the value assigned by the last call of |
7bfac547 MR |
1751 | `set-window-dedicated-p' for WINDOW. Return nil if that function was |
1752 | never called with WINDOW as its argument, or the value set by that | |
52162052 MR |
1753 | function was internally reset since its last call. WINDOW must be a |
1754 | live window and defaults to the selected one. | |
7bfac547 MR |
1755 | |
1756 | When a window is dedicated to its buffer, `display-buffer' will refrain | |
1757 | from displaying another buffer in it. `get-lru-window' and | |
1758 | `get-largest-window' treat dedicated windows specially. | |
1759 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1760 | `kill-buffer' can delete a dedicated window and the containing frame. | |
1761 | ||
1762 | Functions like `set-window-buffer' may change the buffer displayed by a | |
1763 | window, unless that window is "strongly" dedicated to its buffer, that | |
1764 | is the value returned by `window-dedicated-p' is t. */) | |
5842a27b | 1765 | (Lisp_Object window) |
7ab12479 | 1766 | { |
52162052 | 1767 | return decode_live_window (window)->dedicated; |
7ab12479 JB |
1768 | } |
1769 | ||
d207b766 RS |
1770 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1771 | Sset_window_dedicated_p, 2, 2, 0, | |
d653c8cc | 1772 | doc: /* Mark WINDOW as dedicated according to FLAG. |
496e208e MR |
1773 | WINDOW must be a live window and defaults to the selected one. FLAG |
1774 | non-nil means mark WINDOW as dedicated to its buffer. FLAG nil means | |
1775 | mark WINDOW as non-dedicated. Return FLAG. | |
d653c8cc | 1776 | |
7bfac547 MR |
1777 | When a window is dedicated to its buffer, `display-buffer' will refrain |
1778 | from displaying another buffer in it. `get-lru-window' and | |
1779 | `get-largest-window' treat dedicated windows specially. | |
496e208e MR |
1780 | `delete-windows-on', `replace-buffer-in-windows', `quit-window', |
1781 | `quit-restore-window' and `kill-buffer' can delete a dedicated window | |
1782 | and the containing frame. | |
7bfac547 MR |
1783 | |
1784 | As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to | |
1785 | its buffer. Functions like `set-window-buffer' may change the buffer | |
1786 | displayed by a window, unless that window is strongly dedicated to its | |
1787 | buffer. If and when `set-window-buffer' displays another buffer in a | |
496e208e | 1788 | window, it also makes sure that the window is no more dedicated. */) |
5842a27b | 1789 | (Lisp_Object window, Lisp_Object flag) |
7ab12479 | 1790 | { |
e8c17b81 PE |
1791 | wset_dedicated (decode_live_window (window), flag); |
1792 | return flag; | |
7ab12479 JB |
1793 | } |
1794 | ||
496e208e MR |
1795 | DEFUN ("window-prev-buffers", Fwindow_prev_buffers, Swindow_prev_buffers, |
1796 | 0, 1, 0, | |
1797 | doc: /* Return buffers previously shown in WINDOW. | |
1798 | WINDOW must be a live window and defaults to the selected one. | |
1799 | ||
94e0933e CY |
1800 | The return value is a list of elements (BUFFER WINDOW-START POS), |
1801 | where BUFFER is a buffer, WINDOW-START is the start position of the | |
1802 | window for that buffer, and POS is a window-specific point value. */) | |
496e208e MR |
1803 | (Lisp_Object window) |
1804 | { | |
52162052 | 1805 | return decode_live_window (window)->prev_buffers; |
496e208e MR |
1806 | } |
1807 | ||
1808 | DEFUN ("set-window-prev-buffers", Fset_window_prev_buffers, | |
1809 | Sset_window_prev_buffers, 2, 2, 0, | |
1810 | doc: /* Set WINDOW's previous buffers to PREV-BUFFERS. | |
94e0933e | 1811 | WINDOW must be a live window and defaults to the selected one. |
496e208e | 1812 | |
94e0933e CY |
1813 | PREV-BUFFERS should be a list of elements (BUFFER WINDOW-START POS), |
1814 | where BUFFER is a buffer, WINDOW-START is the start position of the | |
1815 | window for that buffer, and POS is a window-specific point value. */) | |
496e208e MR |
1816 | (Lisp_Object window, Lisp_Object prev_buffers) |
1817 | { | |
e8c17b81 PE |
1818 | wset_prev_buffers (decode_live_window (window), prev_buffers); |
1819 | return prev_buffers; | |
496e208e MR |
1820 | } |
1821 | ||
1822 | DEFUN ("window-next-buffers", Fwindow_next_buffers, Swindow_next_buffers, | |
1823 | 0, 1, 0, | |
1824 | doc: /* Return list of buffers recently re-shown in WINDOW. | |
1825 | WINDOW must be a live window and defaults to the selected one. */) | |
1826 | (Lisp_Object window) | |
1827 | { | |
52162052 | 1828 | return decode_live_window (window)->next_buffers; |
496e208e MR |
1829 | } |
1830 | ||
1831 | DEFUN ("set-window-next-buffers", Fset_window_next_buffers, | |
1832 | Sset_window_next_buffers, 2, 2, 0, | |
1833 | doc: /* Set WINDOW's next buffers to NEXT-BUFFERS. | |
94e0933e CY |
1834 | WINDOW must be a live window and defaults to the selected one. |
1835 | NEXT-BUFFERS should be a list of buffers. */) | |
496e208e MR |
1836 | (Lisp_Object window, Lisp_Object next_buffers) |
1837 | { | |
e8c17b81 PE |
1838 | wset_next_buffers (decode_live_window (window), next_buffers); |
1839 | return next_buffers; | |
496e208e | 1840 | } |
d653c8cc | 1841 | |
cfbb2395 JB |
1842 | DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters, |
1843 | 0, 1, 0, | |
d653c8cc | 1844 | doc: /* Return the parameters of WINDOW and their values. |
52162052 MR |
1845 | WINDOW must be a valid window and defaults to the selected one. The |
1846 | return value is a list of elements of the form (PARAMETER . VALUE). */) | |
5842a27b | 1847 | (Lisp_Object window) |
cfbb2395 | 1848 | { |
52162052 | 1849 | return Fcopy_alist (decode_valid_window (window)->window_parameters); |
cfbb2395 JB |
1850 | } |
1851 | ||
1852 | DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter, | |
1853 | 2, 2, 0, | |
d653c8cc | 1854 | doc: /* Return WINDOW's value for PARAMETER. |
a8c729af | 1855 | WINDOW can be any window and defaults to the selected one. */) |
5842a27b | 1856 | (Lisp_Object window, Lisp_Object parameter) |
cfbb2395 | 1857 | { |
927abf37 JB |
1858 | Lisp_Object result; |
1859 | ||
a8c729af | 1860 | result = Fassq (parameter, decode_any_window (window)->window_parameters); |
927abf37 | 1861 | return CDR_SAFE (result); |
cfbb2395 JB |
1862 | } |
1863 | ||
cfbb2395 JB |
1864 | DEFUN ("set-window-parameter", Fset_window_parameter, |
1865 | Sset_window_parameter, 3, 3, 0, | |
d653c8cc | 1866 | doc: /* Set WINDOW's value of PARAMETER to VALUE. |
a8c729af | 1867 | WINDOW can be any window and defaults to the selected one. |
52162052 | 1868 | Return VALUE. */) |
5842a27b | 1869 | (Lisp_Object window, Lisp_Object parameter, Lisp_Object value) |
cfbb2395 | 1870 | { |
a8c729af | 1871 | register struct window *w = decode_any_window (window); |
cfbb2395 JB |
1872 | Lisp_Object old_alist_elt; |
1873 | ||
d3d50620 | 1874 | old_alist_elt = Fassq (parameter, w->window_parameters); |
12bb3111 | 1875 | if (NILP (old_alist_elt)) |
e8c17b81 PE |
1876 | wset_window_parameters |
1877 | (w, Fcons (Fcons (parameter, value), w->window_parameters)); | |
cfbb2395 JB |
1878 | else |
1879 | Fsetcdr (old_alist_elt, value); | |
927abf37 | 1880 | return value; |
cfbb2395 JB |
1881 | } |
1882 | ||
7ab12479 JB |
1883 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, |
1884 | 0, 1, 0, | |
c85322d0 | 1885 | doc: /* Return the display-table that WINDOW is using. |
52162052 | 1886 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 1887 | (Lisp_Object window) |
7ab12479 | 1888 | { |
52162052 | 1889 | return decode_live_window (window)->display_table; |
7ab12479 JB |
1890 | } |
1891 | ||
5500c422 GM |
1892 | /* Get the display table for use on window W. This is either W's |
1893 | display table or W's buffer's display table. Ignore the specified | |
1894 | tables if they are not valid; if no valid table is specified, | |
1895 | return 0. */ | |
7ab12479 | 1896 | |
319315f1 | 1897 | struct Lisp_Char_Table * |
971de7fb | 1898 | window_display_table (struct window *w) |
7ab12479 | 1899 | { |
c756cdbe GM |
1900 | struct Lisp_Char_Table *dp = NULL; |
1901 | ||
d3d50620 DA |
1902 | if (DISP_TABLE_P (w->display_table)) |
1903 | dp = XCHAR_TABLE (w->display_table); | |
1904 | else if (BUFFERP (w->buffer)) | |
c756cdbe | 1905 | { |
d3d50620 | 1906 | struct buffer *b = XBUFFER (w->buffer); |
177c0ea7 | 1907 | |
4b4deea2 TT |
1908 | if (DISP_TABLE_P (BVAR (b, display_table))) |
1909 | dp = XCHAR_TABLE (BVAR (b, display_table)); | |
c756cdbe GM |
1910 | else if (DISP_TABLE_P (Vstandard_display_table)) |
1911 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1912 | } | |
171d003c | 1913 | |
c756cdbe | 1914 | return dp; |
7ab12479 JB |
1915 | } |
1916 | ||
3a2712f9 | 1917 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
52162052 MR |
1918 | doc: /* Set WINDOW's display-table to TABLE. |
1919 | WINDOW must be a live window and defaults to the selected one. */) | |
5842a27b | 1920 | (register Lisp_Object window, Lisp_Object table) |
7ab12479 | 1921 | { |
e8c17b81 PE |
1922 | wset_display_table (decode_live_window (window), table); |
1923 | return table; | |
7ab12479 JB |
1924 | } |
1925 | \f | |
562dd5e9 | 1926 | /* Record info on buffer window W is displaying |
7ab12479 | 1927 | when it is about to cease to display that buffer. */ |
dfcf069d | 1928 | static void |
971de7fb | 1929 | unshow_buffer (register struct window *w) |
7ab12479 | 1930 | { |
12cae7c0 | 1931 | Lisp_Object buf; |
b73ea88e | 1932 | struct buffer *b; |
7ab12479 | 1933 | |
d3d50620 | 1934 | buf = w->buffer; |
b73ea88e | 1935 | b = XBUFFER (buf); |
d3d50620 | 1936 | if (b != XMARKER (w->pointm)->buffer) |
1088b922 | 1937 | emacs_abort (); |
7ab12479 | 1938 | |
573f41ab | 1939 | #if 0 |
7ab12479 | 1940 | if (w == XWINDOW (selected_window) |
d3d50620 | 1941 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) |
7ab12479 JB |
1942 | /* Do this except when the selected window's buffer |
1943 | is being removed from some other window. */ | |
573f41ab RS |
1944 | #endif |
1945 | /* last_window_start records the start position that this buffer | |
1946 | had in the last window to be disconnected from it. | |
1947 | Now that this statement is unconditional, | |
1948 | it is possible for the buffer to be displayed in the | |
1949 | selected window, while last_window_start reflects another | |
1950 | window which was recently showing the same buffer. | |
1951 | Some people might say that might be a good thing. Let's see. */ | |
d3d50620 | 1952 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1953 | |
1954 | /* Point in the selected window's buffer | |
1955 | is actually stored in that buffer, and the window's pointm isn't used. | |
1956 | So don't clobber point in that buffer. */ | |
d3d50620 | 1957 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
c4b6914d MR |
1958 | /* Don't clobber point in current buffer either (this could be |
1959 | useful in connection with bug#12208). | |
1960 | && XBUFFER (buf) != current_buffer */ | |
719eaeb1 | 1961 | /* This line helps to fix Horsley's testbug.el bug. */ |
4b4deea2 TT |
1962 | && !(WINDOWP (BVAR (b, last_selected_window)) |
1963 | && w != XWINDOW (BVAR (b, last_selected_window)) | |
d3d50620 | 1964 | && EQ (buf, XWINDOW (BVAR (b, last_selected_window))->buffer))) |
b73ea88e RS |
1965 | temp_set_point_both (b, |
1966 | clip_to_bounds (BUF_BEGV (b), | |
d3d50620 | 1967 | XMARKER (w->pointm)->charpos, |
b73ea88e RS |
1968 | BUF_ZV (b)), |
1969 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
d3d50620 | 1970 | marker_byte_position (w->pointm), |
b73ea88e | 1971 | BUF_ZV_BYTE (b))); |
177c0ea7 | 1972 | |
4b4deea2 TT |
1973 | if (WINDOWP (BVAR (b, last_selected_window)) |
1974 | && w == XWINDOW (BVAR (b, last_selected_window))) | |
39eb03f1 | 1975 | bset_last_selected_window (b, Qnil); |
7ab12479 JB |
1976 | } |
1977 | ||
1a13852e MR |
1978 | /* Put NEW into the window structure in place of OLD. SETFLAG zero |
1979 | means change window structure only. Otherwise store geometry and | |
1980 | other settings as well. */ | |
dfcf069d | 1981 | static void |
1a13852e | 1982 | replace_window (Lisp_Object old, Lisp_Object new, int setflag) |
7ab12479 JB |
1983 | { |
1984 | register Lisp_Object tem; | |
1a13852e | 1985 | register struct window *o = XWINDOW (old), *n = XWINDOW (new); |
7ab12479 | 1986 | |
1a13852e MR |
1987 | /* If OLD is its frame's root window, then NEW is the new |
1988 | root window for that frame. */ | |
d3d50620 | 1989 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
f00af5b1 | 1990 | fset_root_window (XFRAME (o->frame), new); |
077288cf DA |
1991 | |
1992 | if (setflag) | |
1993 | { | |
e8c17b81 PE |
1994 | wset_left_col (n, o->left_col); |
1995 | wset_top_line (n, o->top_line); | |
1996 | wset_total_cols (n, o->total_cols); | |
1997 | wset_total_lines (n, o->total_lines); | |
1998 | wset_normal_cols (n, o->normal_cols); | |
1999 | wset_normal_cols (o, make_float (1.0)); | |
2000 | wset_normal_lines (n, o->normal_lines); | |
2001 | wset_normal_lines (o, make_float (1.0)); | |
1a13852e MR |
2002 | n->desired_matrix = n->current_matrix = 0; |
2003 | n->vscroll = 0; | |
2004 | memset (&n->cursor, 0, sizeof (n->cursor)); | |
2005 | memset (&n->last_cursor, 0, sizeof (n->last_cursor)); | |
2006 | memset (&n->phys_cursor, 0, sizeof (n->phys_cursor)); | |
2007 | n->phys_cursor_type = -1; | |
2008 | n->phys_cursor_width = -1; | |
2009 | n->must_be_updated_p = 0; | |
2010 | n->pseudo_window_p = 0; | |
e8c17b81 PE |
2011 | wset_window_end_vpos (n, make_number (0)); |
2012 | wset_window_end_pos (n, make_number (0)); | |
2013 | wset_window_end_valid (n, Qnil); | |
1a13852e | 2014 | n->frozen_window_start_p = 0; |
1a13852e MR |
2015 | } |
2016 | ||
d3d50620 | 2017 | tem = o->next; |
e8c17b81 | 2018 | wset_next (n, tem); |
265a9e55 | 2019 | if (!NILP (tem)) |
e8c17b81 | 2020 | wset_prev (XWINDOW (tem), new); |
7ab12479 | 2021 | |
d3d50620 | 2022 | tem = o->prev; |
e8c17b81 | 2023 | wset_prev (n, tem); |
265a9e55 | 2024 | if (!NILP (tem)) |
e8c17b81 | 2025 | wset_next (XWINDOW (tem), new); |
7ab12479 | 2026 | |
d3d50620 | 2027 | tem = o->parent; |
e8c17b81 | 2028 | wset_parent (n, tem); |
265a9e55 | 2029 | if (!NILP (tem)) |
7ab12479 | 2030 | { |
d3d50620 | 2031 | if (EQ (XWINDOW (tem)->vchild, old)) |
e8c17b81 | 2032 | wset_vchild (XWINDOW (tem), new); |
d3d50620 | 2033 | if (EQ (XWINDOW (tem)->hchild, old)) |
e8c17b81 | 2034 | wset_hchild (XWINDOW (tem), new); |
7ab12479 | 2035 | } |
1a13852e MR |
2036 | } |
2037 | ||
2038 | /* If window WINDOW and its parent window are iso-combined, merge | |
2039 | WINDOW's children into those of its parent window and mark WINDOW as | |
2040 | deleted. */ | |
2041 | ||
2042 | static void | |
2043 | recombine_windows (Lisp_Object window) | |
2044 | { | |
2045 | struct window *w, *p, *c; | |
2046 | Lisp_Object parent, child; | |
2047 | int horflag; | |
2048 | ||
2049 | w = XWINDOW (window); | |
d3d50620 DA |
2050 | parent = w->parent; |
2051 | if (!NILP (parent) && NILP (w->combination_limit)) | |
1a13852e MR |
2052 | { |
2053 | p = XWINDOW (parent); | |
d3d50620 DA |
2054 | if (((!NILP (p->vchild) && !NILP (w->vchild)) |
2055 | || (!NILP (p->hchild) && !NILP (w->hchild)))) | |
1a13852e MR |
2056 | /* WINDOW and PARENT are both either a vertical or a horizontal |
2057 | combination. */ | |
2058 | { | |
d3d50620 DA |
2059 | horflag = NILP (w->vchild); |
2060 | child = horflag ? w->hchild : w->vchild; | |
1a13852e MR |
2061 | c = XWINDOW (child); |
2062 | ||
2063 | /* Splice WINDOW's children into its parent's children and | |
2064 | assign new normal sizes. */ | |
d3d50620 | 2065 | if (NILP (w->prev)) |
1a13852e | 2066 | if (horflag) |
e8c17b81 | 2067 | wset_hchild (p, child); |
1a13852e | 2068 | else |
e8c17b81 | 2069 | wset_vchild (p, child); |
1a13852e MR |
2070 | else |
2071 | { | |
e8c17b81 PE |
2072 | wset_prev (c, w->prev); |
2073 | wset_next (XWINDOW (w->prev), child); | |
1a13852e MR |
2074 | } |
2075 | ||
2076 | while (c) | |
2077 | { | |
e8c17b81 | 2078 | wset_parent (c, parent); |
1a13852e MR |
2079 | |
2080 | if (horflag) | |
e8c17b81 PE |
2081 | wset_normal_cols (c, |
2082 | make_float (XFLOATINT (c->total_cols) | |
2083 | / XFLOATINT (p->total_cols))); | |
1a13852e | 2084 | else |
e8c17b81 PE |
2085 | wset_normal_lines (c, |
2086 | make_float (XFLOATINT (c->total_lines) | |
2087 | / XFLOATINT (p->total_lines))); | |
1a13852e | 2088 | |
d3d50620 | 2089 | if (NILP (c->next)) |
1a13852e | 2090 | { |
d3d50620 | 2091 | if (!NILP (w->next)) |
1a13852e | 2092 | { |
e8c17b81 PE |
2093 | wset_next (c, w->next); |
2094 | wset_prev (XWINDOW (c->next), child); | |
1a13852e MR |
2095 | } |
2096 | ||
2097 | c = 0; | |
2098 | } | |
2099 | else | |
2100 | { | |
d3d50620 | 2101 | child = c->next; |
1a13852e MR |
2102 | c = XWINDOW (child); |
2103 | } | |
2104 | } | |
7ab12479 | 2105 | |
1a13852e | 2106 | /* WINDOW can be deleted now. */ |
e8c17b81 PE |
2107 | wset_vchild (w, Qnil); |
2108 | wset_hchild (w, Qnil); | |
1a13852e MR |
2109 | } |
2110 | } | |
7ab12479 | 2111 | } |
6198ccd0 MR |
2112 | |
2113 | /* If WINDOW can be deleted, delete it. */ | |
4475bec4 | 2114 | static void |
6198ccd0 MR |
2115 | delete_deletable_window (Lisp_Object window) |
2116 | { | |
2117 | if (!NILP (call1 (Qwindow_deletable_p, window))) | |
2118 | call1 (Qdelete_window, window); | |
2119 | } | |
1a13852e | 2120 | \f |
67492200 GM |
2121 | /*********************************************************************** |
2122 | Window List | |
2123 | ***********************************************************************/ | |
2124 | ||
f95464e4 GM |
2125 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
2126 | pointer. This is a callback function for foreach_window, used in | |
496e208e | 2127 | the window_list function. */ |
67492200 GM |
2128 | |
2129 | static int | |
971de7fb | 2130 | add_window_to_list (struct window *w, void *user_data) |
67492200 | 2131 | { |
f95464e4 | 2132 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
2133 | Lisp_Object window; |
2134 | XSETWINDOW (window, w); | |
212116d6 | 2135 | *list = Fcons (window, *list); |
67492200 GM |
2136 | return 1; |
2137 | } | |
2138 | ||
2139 | ||
2140 | /* Return a list of all windows, for use by next_window. If | |
2141 | Vwindow_list is a list, return that list. Otherwise, build a new | |
2142 | list, cache it in Vwindow_list, and return that. */ | |
2143 | ||
2144 | static Lisp_Object | |
971de7fb | 2145 | window_list (void) |
67492200 GM |
2146 | { |
2147 | if (!CONSP (Vwindow_list)) | |
2148 | { | |
2149 | Lisp_Object tail; | |
212116d6 | 2150 | |
67492200 GM |
2151 | Vwindow_list = Qnil; |
2152 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
2153 | { |
2154 | Lisp_Object args[2]; | |
2155 | ||
2156 | /* We are visiting windows in canonical order, and add | |
2157 | new windows at the front of args[1], which means we | |
2158 | have to reverse this list at the end. */ | |
2159 | args[1] = Qnil; | |
2160 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
2161 | args[0] = Vwindow_list; | |
2162 | args[1] = Fnreverse (args[1]); | |
2163 | Vwindow_list = Fnconc (2, args); | |
2164 | } | |
67492200 | 2165 | } |
177c0ea7 | 2166 | |
67492200 GM |
2167 | return Vwindow_list; |
2168 | } | |
2169 | ||
2170 | ||
118ea242 GM |
2171 | /* Value is non-zero if WINDOW satisfies the constraints given by |
2172 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 2173 | |
118ea242 GM |
2174 | MINIBUF t means WINDOW may be minibuffer windows. |
2175 | `lambda' means WINDOW may not be a minibuffer window. | |
2176 | a window means a specific minibuffer window | |
67492200 | 2177 | |
118ea242 GM |
2178 | ALL_FRAMES t means search all frames, |
2179 | nil means search just current frame, | |
aa248733 MS |
2180 | `visible' means search just visible frames on the |
2181 | current terminal, | |
2182 | 0 means search visible and iconified frames on the | |
2183 | current terminal, | |
118ea242 GM |
2184 | a window means search the frame that window belongs to, |
2185 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
2186 | |
2187 | static int | |
971de7fb | 2188 | candidate_window_p (Lisp_Object window, Lisp_Object owindow, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 GM |
2189 | { |
2190 | struct window *w = XWINDOW (window); | |
d3d50620 | 2191 | struct frame *f = XFRAME (w->frame); |
67492200 GM |
2192 | int candidate_p = 1; |
2193 | ||
d3d50620 | 2194 | if (!BUFFERP (w->buffer)) |
67492200 GM |
2195 | candidate_p = 0; |
2196 | else if (MINI_WINDOW_P (w) | |
2197 | && (EQ (minibuf, Qlambda) | |
2198 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
2199 | { | |
2200 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
2201 | If it is a window, consider only that one. */ | |
2202 | candidate_p = 0; | |
2203 | } | |
118ea242 GM |
2204 | else if (EQ (all_frames, Qt)) |
2205 | candidate_p = 1; | |
67492200 | 2206 | else if (NILP (all_frames)) |
118ea242 | 2207 | { |
a54e2c05 | 2208 | eassert (WINDOWP (owindow)); |
d3d50620 | 2209 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); |
118ea242 | 2210 | } |
67492200 GM |
2211 | else if (EQ (all_frames, Qvisible)) |
2212 | { | |
2213 | FRAME_SAMPLE_VISIBILITY (f); | |
de509a60 | 2214 | candidate_p = FRAME_VISIBLE_P (f) |
d3d50620 | 2215 | && (FRAME_TERMINAL (XFRAME (w->frame)) |
de509a60 SM |
2216 | == FRAME_TERMINAL (XFRAME (selected_frame))); |
2217 | ||
67492200 GM |
2218 | } |
2219 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
2220 | { | |
2221 | FRAME_SAMPLE_VISIBILITY (f); | |
ca2d5566 SM |
2222 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
2223 | #ifdef HAVE_X_WINDOWS | |
2224 | /* Yuck!! If we've just created the frame and the | |
2225 | window-manager requested the user to place it | |
2226 | manually, the window may still not be considered | |
2227 | `visible'. I'd argue it should be at least | |
2228 | something like `iconified', but don't know how to do | |
2229 | that yet. --Stef */ | |
2230 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
2231 | && !f->output_data.x->has_been_visible) | |
2232 | #endif | |
de509a60 | 2233 | ) |
d3d50620 | 2234 | && (FRAME_TERMINAL (XFRAME (w->frame)) |
de509a60 | 2235 | == FRAME_TERMINAL (XFRAME (selected_frame))); |
67492200 | 2236 | } |
67492200 GM |
2237 | else if (WINDOWP (all_frames)) |
2238 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
d3d50620 DA |
2239 | || EQ (XWINDOW (all_frames)->frame, w->frame) |
2240 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 | 2241 | else if (FRAMEP (all_frames)) |
d3d50620 | 2242 | candidate_p = EQ (all_frames, w->frame); |
67492200 GM |
2243 | |
2244 | return candidate_p; | |
2245 | } | |
2246 | ||
2247 | ||
2248 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
aa248733 MS |
2249 | Fwindow_list. See candidate_window_p for the meaning of WINDOW, |
2250 | MINIBUF, and ALL_FRAMES. */ | |
67492200 GM |
2251 | |
2252 | static void | |
971de7fb | 2253 | decode_next_window_args (Lisp_Object *window, Lisp_Object *minibuf, Lisp_Object *all_frames) |
67492200 | 2254 | { |
b9e9df47 | 2255 | struct window *w = decode_live_window (*window); |
177c0ea7 | 2256 | |
67492200 GM |
2257 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
2258 | does. */ | |
2259 | if (NILP (*minibuf)) | |
2260 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
2261 | else if (!EQ (*minibuf, Qt)) | |
2262 | *minibuf = Qlambda; | |
177c0ea7 | 2263 | |
67492200 GM |
2264 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
2265 | => count none of them, or a specific minibuffer window (the | |
2266 | active one) to count. */ | |
2267 | ||
2268 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
2269 | if (NILP (*all_frames)) | |
f00af5b1 | 2270 | *all_frames |
3a45383a | 2271 | = (!EQ (*minibuf, Qlambda) |
b9e9df47 | 2272 | ? FRAME_MINIBUF_WINDOW (XFRAME (w->frame)) |
3a45383a | 2273 | : Qnil); |
67492200 GM |
2274 | else if (EQ (*all_frames, Qvisible)) |
2275 | ; | |
0f8fe9a2 | 2276 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
2277 | ; |
2278 | else if (FRAMEP (*all_frames)) | |
2279 | ; | |
2280 | else if (!EQ (*all_frames, Qt)) | |
2281 | *all_frames = Qnil; | |
67492200 GM |
2282 | } |
2283 | ||
2284 | ||
ab6d1131 | 2285 | /* Return the next or previous window of WINDOW in cyclic ordering |
67492200 GM |
2286 | of windows. NEXT_P non-zero means return the next window. See the |
2287 | documentation string of next-window for the meaning of MINIBUF and | |
2288 | ALL_FRAMES. */ | |
2289 | ||
2290 | static Lisp_Object | |
971de7fb | 2291 | next_window (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames, int next_p) |
67492200 GM |
2292 | { |
2293 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 2294 | |
67492200 GM |
2295 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
2296 | return the first window on the frame. */ | |
2297 | if (FRAMEP (all_frames) | |
d3d50620 | 2298 | && !EQ (all_frames, XWINDOW (window)->frame)) |
67492200 | 2299 | return Fframe_first_window (all_frames); |
177c0ea7 | 2300 | |
212116d6 | 2301 | if (next_p) |
67492200 GM |
2302 | { |
2303 | Lisp_Object list; | |
177c0ea7 | 2304 | |
67492200 GM |
2305 | /* Find WINDOW in the list of all windows. */ |
2306 | list = Fmemq (window, window_list ()); | |
2307 | ||
2308 | /* Scan forward from WINDOW to the end of the window list. */ | |
2309 | if (CONSP (list)) | |
2310 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 2311 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2312 | break; |
2313 | ||
2314 | /* Scan from the start of the window list up to WINDOW. */ | |
2315 | if (!CONSP (list)) | |
2316 | for (list = Vwindow_list; | |
2317 | CONSP (list) && !EQ (XCAR (list), window); | |
2318 | list = XCDR (list)) | |
118ea242 | 2319 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2320 | break; |
2321 | ||
2322 | if (CONSP (list)) | |
2323 | window = XCAR (list); | |
2324 | } | |
2325 | else | |
2326 | { | |
2327 | Lisp_Object candidate, list; | |
177c0ea7 | 2328 | |
67492200 GM |
2329 | /* Scan through the list of windows for candidates. If there are |
2330 | candidate windows in front of WINDOW, the last one of these | |
2331 | is the one we want. If there are candidates following WINDOW | |
2332 | in the list, again the last one of these is the one we want. */ | |
2333 | candidate = Qnil; | |
2334 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
2335 | { | |
2336 | if (EQ (XCAR (list), window)) | |
2337 | { | |
2338 | if (WINDOWP (candidate)) | |
2339 | break; | |
2340 | } | |
118ea242 GM |
2341 | else if (candidate_window_p (XCAR (list), window, minibuf, |
2342 | all_frames)) | |
67492200 GM |
2343 | candidate = XCAR (list); |
2344 | } | |
2345 | ||
2346 | if (WINDOWP (candidate)) | |
2347 | window = candidate; | |
2348 | } | |
2349 | ||
2350 | return window; | |
2351 | } | |
7ab12479 | 2352 | |
7ab12479 | 2353 | |
a7ca3326 | 2354 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
a9b9b7f5 | 2355 | doc: /* Return live window after WINDOW in the cyclic ordering of windows. |
87e68db4 | 2356 | WINDOW must be a live window and defaults to the selected one. The |
9397e56f MR |
2357 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to |
2358 | consider. | |
2359 | ||
2360 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2361 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2362 | even if the minibuffer is not active. Any other value means do not | |
2363 | consider the minibuffer window even if the minibuffer is active. | |
2364 | ||
2365 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2366 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2367 | minibuffer counts, consider all windows on all frames that share that | |
2368 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2369 | meanings: | |
2370 | ||
2371 | - t means consider all windows on all existing frames. | |
2372 | ||
2373 | - `visible' means consider all windows on all visible frames. | |
2374 | ||
2375 | - 0 (the number zero) means consider all windows on all visible and | |
2376 | iconified frames. | |
2377 | ||
2378 | - A frame means consider all windows on that frame only. | |
ab6d1131 | 2379 | |
ab6d1131 | 2380 | Anything else means consider all windows on WINDOW's frame and no |
9397e56f | 2381 | others. |
fdb82f93 PJ |
2382 | |
2383 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
2384 | `next-window' to iterate through the entire cycle of acceptable | |
2385 | windows, eventually ending up back at the window you started with. | |
2386 | `previous-window' traverses the same cycle, in the reverse order. */) | |
5842a27b | 2387 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2388 | { |
67492200 | 2389 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
2390 | } |
2391 | ||
67492200 | 2392 | |
26f6279d | 2393 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
a9b9b7f5 | 2394 | doc: /* Return live window before WINDOW in the cyclic ordering of windows. |
9397e56f MR |
2395 | WINDOW must be a live window and defaults to the selected one. The |
2396 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to | |
2397 | consider. | |
2398 | ||
2399 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2400 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2401 | even if the minibuffer is not active. Any other value means do not | |
2402 | consider the minibuffer window even if the minibuffer is active. | |
2403 | ||
2404 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2405 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2406 | minibuffer counts, consider all windows on all frames that share that | |
2407 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2408 | meanings: | |
2409 | ||
2410 | - t means consider all windows on all existing frames. | |
2411 | ||
2412 | - `visible' means consider all windows on all visible frames. | |
2413 | ||
2414 | - 0 (the number zero) means consider all windows on all visible and | |
2415 | iconified frames. | |
2416 | ||
2417 | - A frame means consider all windows on that frame only. | |
2418 | ||
2419 | Anything else means consider all windows on WINDOW's frame and no | |
2420 | others. | |
ab6d1131 MR |
2421 | |
2422 | If you use consistent values for MINIBUF and ALL-FRAMES, you can | |
2423 | use `previous-window' to iterate through the entire cycle of | |
2424 | acceptable windows, eventually ending up back at the window you | |
2425 | started with. `next-window' traverses the same cycle, in the | |
2426 | reverse order. */) | |
5842a27b | 2427 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2428 | { |
67492200 | 2429 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2430 | } |
2431 | ||
67492200 | 2432 | |
ab6d1131 | 2433 | /* Return a list of windows in cyclic ordering. Arguments are like |
cd2904bd GM |
2434 | for `next-window'. */ |
2435 | ||
2436 | static Lisp_Object | |
971de7fb | 2437 | window_list_1 (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 | 2438 | { |
403de3b4 | 2439 | Lisp_Object tail, list, rest; |
67492200 GM |
2440 | |
2441 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2442 | list = Qnil; | |
177c0ea7 | 2443 | |
67492200 | 2444 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2445 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2446 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2447 | |
403de3b4 RS |
2448 | /* Rotate the list to start with WINDOW. */ |
2449 | list = Fnreverse (list); | |
2450 | rest = Fmemq (window, list); | |
2451 | if (!NILP (rest) && !EQ (rest, list)) | |
2452 | { | |
1725a7c9 | 2453 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2454 | ; |
2455 | XSETCDR (tail, Qnil); | |
2456 | list = nconc2 (rest, list); | |
2457 | } | |
2458 | return list; | |
67492200 GM |
2459 | } |
2460 | ||
2461 | ||
abde8f8c MR |
2462 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, |
2463 | doc: /* Return a list of windows on FRAME, starting with WINDOW. | |
2464 | FRAME nil or omitted means use the selected frame. | |
49745b39 | 2465 | WINDOW nil or omitted means use the window selected within FRAME. |
abde8f8c MR |
2466 | MINIBUF t means include the minibuffer window, even if it isn't active. |
2467 | MINIBUF nil or omitted means include the minibuffer window only | |
2468 | if it's active. | |
2469 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2470 | (Lisp_Object frame, Lisp_Object minibuf, Lisp_Object window) | |
2471 | { | |
2472 | if (NILP (window)) | |
e69b0960 | 2473 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
abde8f8c MR |
2474 | CHECK_WINDOW (window); |
2475 | if (NILP (frame)) | |
2476 | frame = selected_frame; | |
2477 | ||
d3d50620 | 2478 | if (!EQ (frame, XWINDOW (window)->frame)) |
abde8f8c MR |
2479 | error ("Window is on a different frame"); |
2480 | ||
2481 | return window_list_1 (window, minibuf, frame); | |
2482 | } | |
2483 | ||
2484 | ||
1a13852e MR |
2485 | DEFUN ("window-list-1", Fwindow_list_1, Swindow_list_1, 0, 3, 0, |
2486 | doc: /* Return a list of all live windows. | |
2487 | WINDOW specifies the first window to list and defaults to the selected | |
2488 | window. | |
2489 | ||
2490 | Optional argument MINIBUF nil or omitted means consider the minibuffer | |
2491 | window only if the minibuffer is active. MINIBUF t means consider the | |
2492 | minibuffer window even if the minibuffer is not active. Any other value | |
2493 | means do not consider the minibuffer window even if the minibuffer is | |
2494 | active. | |
2495 | ||
2496 | Optional argument ALL-FRAMES nil or omitted means consider all windows | |
2497 | on WINDOW's frame, plus the minibuffer window if specified by the | |
2498 | MINIBUF argument. If the minibuffer counts, consider all windows on all | |
2499 | frames that share that minibuffer too. The following non-nil values of | |
2500 | ALL-FRAMES have special meanings: | |
2501 | ||
2502 | - t means consider all windows on all existing frames. | |
2503 | ||
2504 | - `visible' means consider all windows on all visible frames. | |
2505 | ||
2506 | - 0 (the number zero) means consider all windows on all visible and | |
2507 | iconified frames. | |
2508 | ||
2509 | - A frame means consider all windows on that frame only. | |
2510 | ||
2511 | Anything else means consider all windows on WINDOW's frame and no | |
2512 | others. | |
2513 | ||
2514 | If WINDOW is not on the list of windows returned, some other window will | |
8350f087 | 2515 | be listed first but no error is signaled. */) |
1a13852e MR |
2516 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
2517 | { | |
2518 | return window_list_1 (window, minibuf, all_frames); | |
2519 | } | |
7ab12479 JB |
2520 | \f |
2521 | /* Look at all windows, performing an operation specified by TYPE | |
2522 | with argument OBJ. | |
75d8f668 | 2523 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2524 | Qnil, look at just the selected frame; |
89bca612 | 2525 | Qvisible, look at visible frames; |
75d8f668 | 2526 | a frame, just look at windows on that frame. |
85fe3b5e | 2527 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2528 | |
2529 | enum window_loop | |
2530 | { | |
2531 | WINDOW_LOOP_UNUSED, | |
9397e56f MR |
2532 | GET_BUFFER_WINDOW, /* Arg is buffer */ |
2533 | REPLACE_BUFFER_IN_WINDOWS_SAFELY, /* Arg is buffer */ | |
2534 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ | |
3f8ab7bd | 2535 | CHECK_ALL_WINDOWS |
7ab12479 JB |
2536 | }; |
2537 | ||
2538 | static Lisp_Object | |
971de7fb | 2539 | window_loop (enum window_loop type, Lisp_Object obj, int mini, Lisp_Object frames) |
7ab12479 | 2540 | { |
118ea242 | 2541 | Lisp_Object window, windows, best_window, frame_arg; |
9397e56f | 2542 | int frame_best_window_flag = 0; |
118ea242 | 2543 | struct frame *f; |
ffdc852d | 2544 | struct gcpro gcpro1; |
177c0ea7 | 2545 | |
44fa5b1e JB |
2546 | /* If we're only looping through windows on a particular frame, |
2547 | frame points to that frame. If we're looping through windows | |
2548 | on all frames, frame is 0. */ | |
2549 | if (FRAMEP (frames)) | |
118ea242 | 2550 | f = XFRAME (frames); |
44fa5b1e | 2551 | else if (NILP (frames)) |
118ea242 | 2552 | f = SELECTED_FRAME (); |
7ab12479 | 2553 | else |
118ea242 | 2554 | f = NULL; |
177c0ea7 | 2555 | |
118ea242 | 2556 | if (f) |
89bca612 | 2557 | frame_arg = Qlambda; |
0f8fe9a2 | 2558 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2559 | frame_arg = frames; |
89bca612 RS |
2560 | else if (EQ (frames, Qvisible)) |
2561 | frame_arg = frames; | |
118ea242 GM |
2562 | else |
2563 | frame_arg = Qt; | |
7ab12479 | 2564 | |
89bca612 RS |
2565 | /* frame_arg is Qlambda to stick to one frame, |
2566 | Qvisible to consider all visible frames, | |
2567 | or Qt otherwise. */ | |
2568 | ||
7ab12479 | 2569 | /* Pick a window to start with. */ |
017b2bad | 2570 | if (WINDOWP (obj)) |
118ea242 GM |
2571 | window = obj; |
2572 | else if (f) | |
2573 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2574 | else |
118ea242 | 2575 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2576 | |
cd2904bd | 2577 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2578 | GCPRO1 (windows); |
7ab12479 | 2579 | best_window = Qnil; |
118ea242 | 2580 | |
e67a1dea | 2581 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2582 | { |
118ea242 | 2583 | struct window *w; |
177c0ea7 | 2584 | |
118ea242 GM |
2585 | window = XCAR (windows); |
2586 | w = XWINDOW (window); | |
177c0ea7 | 2587 | |
118ea242 GM |
2588 | /* Note that we do not pay attention here to whether the frame |
2589 | is visible, since Fwindow_list skips non-visible frames if | |
2590 | that is desired, under the control of frame_arg. */ | |
2591 | if (!MINI_WINDOW_P (w) | |
9397e56f MR |
2592 | /* For REPLACE_BUFFER_IN_WINDOWS_SAFELY, we must always |
2593 | consider all windows. */ | |
2594 | || type == REPLACE_BUFFER_IN_WINDOWS_SAFELY | |
7ab12479 JB |
2595 | || (mini && minibuf_level > 0)) |
2596 | switch (type) | |
2597 | { | |
2598 | case GET_BUFFER_WINDOW: | |
d3d50620 | 2599 | if (EQ (w->buffer, obj) |
9397e56f MR |
2600 | /* Don't find any minibuffer window except the one that |
2601 | is currently in use. */ | |
2602 | && (MINI_WINDOW_P (w) ? EQ (window, minibuf_window) : 1)) | |
118ea242 | 2603 | { |
9397e56f MR |
2604 | if (EQ (window, selected_window)) |
2605 | /* Preferably return the selected window. */ | |
ca2d5566 | 2606 | RETURN_UNGCPRO (window); |
d3d50620 | 2607 | else if (EQ (XWINDOW (window)->frame, selected_frame) |
9397e56f MR |
2608 | && !frame_best_window_flag) |
2609 | /* Prefer windows on the current frame (but don't | |
2610 | choose another one if we have one already). */ | |
118ea242 | 2611 | { |
9397e56f MR |
2612 | best_window = window; |
2613 | frame_best_window_flag = 1; | |
7ab12479 | 2614 | } |
9397e56f MR |
2615 | else if (NILP (best_window)) |
2616 | best_window = window; | |
7ab12479 JB |
2617 | } |
2618 | break; | |
2619 | ||
9397e56f MR |
2620 | case REPLACE_BUFFER_IN_WINDOWS_SAFELY: |
2621 | /* We could simply check whether the buffer shown by window | |
2622 | is live, and show another buffer in case it isn't. */ | |
d3d50620 | 2623 | if (EQ (w->buffer, obj)) |
7ab12479 | 2624 | { |
9397e56f | 2625 | /* Undedicate WINDOW. */ |
e8c17b81 | 2626 | wset_dedicated (w, Qnil); |
9397e56f MR |
2627 | /* Make WINDOW show the buffer returned by |
2628 | other_buffer_safely, don't run any hooks. */ | |
2629 | set_window_buffer | |
d3d50620 | 2630 | (window, other_buffer_safely (w->buffer), 0, 0); |
9397e56f MR |
2631 | /* If WINDOW is the selected window, make its buffer |
2632 | current. But do so only if the window shows the | |
2633 | current buffer (Bug#6454). */ | |
2634 | if (EQ (window, selected_window) | |
d3d50620 DA |
2635 | && XBUFFER (w->buffer) == current_buffer) |
2636 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2637 | } |
2638 | break; | |
3f8ab7bd | 2639 | |
6b61353c | 2640 | case REDISPLAY_BUFFER_WINDOWS: |
d3d50620 | 2641 | if (EQ (w->buffer, obj)) |
6b61353c KH |
2642 | { |
2643 | mark_window_display_accurate (window, 0); | |
c98ff5dd | 2644 | w->update_mode_line = 1; |
6b61353c KH |
2645 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; |
2646 | ++update_mode_lines; | |
2647 | best_window = window; | |
2648 | } | |
2649 | break; | |
2650 | ||
3f8ab7bd RS |
2651 | /* Check for a window that has a killed buffer. */ |
2652 | case CHECK_ALL_WINDOWS: | |
d3d50620 | 2653 | if (! NILP (w->buffer) |
e578f381 | 2654 | && !BUFFER_LIVE_P (XBUFFER (w->buffer))) |
1088b922 | 2655 | emacs_abort (); |
118ea242 | 2656 | break; |
6bbd7a29 GM |
2657 | |
2658 | case WINDOW_LOOP_UNUSED: | |
2659 | break; | |
7ab12479 | 2660 | } |
7ab12479 | 2661 | } |
7ab12479 | 2662 | |
118ea242 | 2663 | UNGCPRO; |
7ab12479 | 2664 | return best_window; |
37962e60 | 2665 | } |
605be8af | 2666 | |
3f8ab7bd RS |
2667 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2668 | ||
e3b27b31 | 2669 | extern void check_all_windows (void) EXTERNALLY_VISIBLE; |
233a4a2c | 2670 | void |
971de7fb | 2671 | check_all_windows (void) |
3f8ab7bd RS |
2672 | { |
2673 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2674 | } | |
2675 | ||
a7ca3326 | 2676 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 0, 2, 0, |
fec89261 | 2677 | doc: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none. |
496e208e MR |
2678 | BUFFER-OR-NAME may be a buffer or a buffer name and defaults to |
2679 | the current buffer. | |
2680 | ||
2681 | The optional argument ALL-FRAMES specifies the frames to consider: | |
2682 | ||
2683 | - t means consider all windows on all existing frames. | |
2684 | ||
2685 | - `visible' means consider all windows on all visible frames. | |
2686 | ||
2687 | - 0 (the number zero) means consider all windows on all visible | |
2688 | and iconified frames. | |
2689 | ||
2690 | - A frame means consider all windows on that frame only. | |
2691 | ||
2692 | Any other value of ALL-FRAMES means consider all windows on the | |
2693 | selected frame and no others. */) | |
2694 | (Lisp_Object buffer_or_name, Lisp_Object all_frames) | |
7ab12479 | 2695 | { |
fec89261 MR |
2696 | Lisp_Object buffer; |
2697 | ||
2698 | if (NILP (buffer_or_name)) | |
2699 | buffer = Fcurrent_buffer (); | |
2700 | else | |
2701 | buffer = Fget_buffer (buffer_or_name); | |
2702 | ||
017b2bad | 2703 | if (BUFFERP (buffer)) |
496e208e | 2704 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, all_frames); |
7ab12479 JB |
2705 | else |
2706 | return Qnil; | |
2707 | } | |
2708 | ||
4b66faf3 | 2709 | static Lisp_Object |
1a13852e MR |
2710 | resize_root_window (Lisp_Object window, Lisp_Object delta, Lisp_Object horizontal, Lisp_Object ignore) |
2711 | { | |
5386012d | 2712 | return call4 (Qwindow_resize_root_window, window, delta, horizontal, ignore); |
1a13852e MR |
2713 | } |
2714 | ||
2715 | ||
2716 | DEFUN ("delete-other-windows-internal", Fdelete_other_windows_internal, | |
2717 | Sdelete_other_windows_internal, 0, 2, "", | |
2718 | doc: /* Make WINDOW fill its frame. | |
52162052 MR |
2719 | Only the frame WINDOW is on is affected. WINDOW must be a valid window |
2720 | and defaults to the selected one. | |
1a13852e | 2721 | |
be7f5545 MR |
2722 | Optional argument ROOT, if non-nil, must specify an internal window such |
2723 | that WINDOW is in its window subtree. If this is the case, replace ROOT | |
2724 | by WINDOW and leave alone any windows not part of ROOT's subtree. | |
1a13852e MR |
2725 | |
2726 | When WINDOW is live try to reduce display jumps by keeping the text | |
2727 | previously visible in WINDOW in the same place on the frame. Doing this | |
2728 | depends on the value of (window-start WINDOW), so if calling this | |
2729 | function in a program gives strange scrolling, make sure the | |
2730 | window-start value is reasonable when this function is called. */) | |
2731 | (Lisp_Object window, Lisp_Object root) | |
2732 | { | |
2733 | struct window *w, *r, *s; | |
2734 | struct frame *f; | |
46a4ce9e | 2735 | Lisp_Object sibling, pwindow, swindow IF_LINT (= Qnil), delta; |
d311d28c | 2736 | ptrdiff_t startpos IF_LINT (= 0); |
46a4ce9e | 2737 | int top IF_LINT (= 0), new_top, resize_failed; |
1a13852e | 2738 | |
52162052 | 2739 | w = decode_valid_window (window); |
1a13852e | 2740 | XSETWINDOW (window, w); |
d3d50620 | 2741 | f = XFRAME (w->frame); |
1a13852e MR |
2742 | |
2743 | if (NILP (root)) | |
2744 | /* ROOT is the frame's root window. */ | |
2745 | { | |
2746 | root = FRAME_ROOT_WINDOW (f); | |
2747 | r = XWINDOW (root); | |
2748 | } | |
2749 | else | |
2750 | /* ROOT must be an ancestor of WINDOW. */ | |
2751 | { | |
52162052 | 2752 | r = decode_valid_window (root); |
d3d50620 | 2753 | pwindow = XWINDOW (window)->parent; |
1a13852e MR |
2754 | while (!NILP (pwindow)) |
2755 | if (EQ (pwindow, root)) | |
2756 | break; | |
2757 | else | |
d3d50620 | 2758 | pwindow = XWINDOW (pwindow)->parent; |
1a13852e MR |
2759 | if (!EQ (pwindow, root)) |
2760 | error ("Specified root is not an ancestor of specified window"); | |
2761 | } | |
2762 | ||
2763 | if (EQ (window, root)) | |
2764 | /* A noop. */ | |
2765 | return Qnil; | |
2766 | /* I don't understand the "top > 0" part below. If we deal with a | |
2767 | standalone minibuffer it would have been caught by the preceding | |
2768 | test. */ | |
2769 | else if (MINI_WINDOW_P (w)) /* && top > 0) */ | |
2770 | error ("Can't expand minibuffer to full frame"); | |
2771 | ||
d3d50620 | 2772 | if (!NILP (w->buffer)) |
1a13852e | 2773 | { |
d3d50620 | 2774 | startpos = marker_position (w->start); |
1a13852e MR |
2775 | top = WINDOW_TOP_EDGE_LINE (w) |
2776 | - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2777 | /* Make sure WINDOW is the frame's selected window. */ | |
2778 | if (!EQ (window, FRAME_SELECTED_WINDOW (f))) | |
2779 | { | |
d3d50620 | 2780 | if (EQ (selected_frame, w->frame)) |
1a13852e MR |
2781 | Fselect_window (window, Qnil); |
2782 | else | |
f00af5b1 | 2783 | fset_selected_window (f, window); |
1a13852e MR |
2784 | } |
2785 | } | |
2786 | else | |
2787 | { | |
be7f5545 MR |
2788 | /* See if the frame's selected window is a part of the window |
2789 | subtree rooted at WINDOW, by finding all the selected window's | |
2790 | parents and comparing each one with WINDOW. If it isn't we | |
2791 | need a new selected window for this frame. */ | |
1a13852e MR |
2792 | swindow = FRAME_SELECTED_WINDOW (f); |
2793 | while (1) | |
2794 | { | |
2795 | pwindow = swindow; | |
2796 | while (!NILP (pwindow) && !EQ (window, pwindow)) | |
d3d50620 | 2797 | pwindow = XWINDOW (pwindow)->parent; |
1a13852e MR |
2798 | |
2799 | if (EQ (window, pwindow)) | |
2800 | /* If WINDOW is an ancestor of SWINDOW, then SWINDOW is ok | |
2801 | as the new selected window. */ | |
2802 | break; | |
2803 | else | |
2804 | /* Else try the previous window of SWINDOW. */ | |
2805 | swindow = Fprevious_window (swindow, Qlambda, Qnil); | |
2806 | } | |
2807 | ||
2808 | if (!EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
2809 | { | |
d3d50620 | 2810 | if (EQ (selected_frame, w->frame)) |
1a13852e MR |
2811 | Fselect_window (swindow, Qnil); |
2812 | else | |
f00af5b1 | 2813 | fset_selected_window (f, swindow); |
1a13852e MR |
2814 | } |
2815 | } | |
2816 | ||
4d7e6e51 | 2817 | block_input (); |
4c5501e9 EZ |
2818 | if (!FRAME_INITIAL_P (f)) |
2819 | { | |
2820 | Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f); | |
2821 | ||
2822 | /* We are going to free the glyph matrices of WINDOW, and with | |
2823 | that we might lose any information about glyph rows that have | |
2824 | some of their glyphs highlighted in mouse face. (These rows | |
2825 | are marked with a non-zero mouse_face_p flag.) If WINDOW | |
2826 | indeed has some glyphs highlighted in mouse face, signal to | |
2827 | frame's up-to-date hook that mouse highlight was overwritten, | |
2828 | so that it will arrange for redisplaying the highlight. */ | |
2829 | if (EQ (hlinfo->mouse_face_window, window)) | |
2830 | { | |
2831 | hlinfo->mouse_face_beg_row = hlinfo->mouse_face_beg_col = -1; | |
2832 | hlinfo->mouse_face_end_row = hlinfo->mouse_face_end_col = -1; | |
2833 | hlinfo->mouse_face_window = Qnil; | |
2834 | } | |
a6b1c7cc | 2835 | } |
1a13852e MR |
2836 | free_window_matrices (r); |
2837 | ||
2838 | windows_or_buffers_changed++; | |
2839 | Vwindow_list = Qnil; | |
2840 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
46a4ce9e | 2841 | resize_failed = 0; |
1a13852e | 2842 | |
d3d50620 | 2843 | if (NILP (w->buffer)) |
1a13852e | 2844 | { |
be7f5545 | 2845 | /* Resize child windows vertically. */ |
d3d50620 DA |
2846 | XSETINT (delta, XINT (r->total_lines) |
2847 | - XINT (w->total_lines)); | |
e8c17b81 | 2848 | wset_top_line (w, r->top_line); |
1a13852e | 2849 | resize_root_window (window, delta, Qnil, Qnil); |
d615d6d2 MR |
2850 | if (window_resize_check (w, 0)) |
2851 | window_resize_apply (w, 0); | |
1a13852e MR |
2852 | else |
2853 | { | |
2854 | resize_root_window (window, delta, Qnil, Qt); | |
d615d6d2 MR |
2855 | if (window_resize_check (w, 0)) |
2856 | window_resize_apply (w, 0); | |
1a13852e MR |
2857 | else |
2858 | resize_failed = 1; | |
2859 | } | |
2860 | ||
be7f5545 | 2861 | /* Resize child windows horizontally. */ |
1a13852e MR |
2862 | if (!resize_failed) |
2863 | { | |
e8c17b81 | 2864 | wset_left_col (w, r->left_col); |
f00af5b1 PE |
2865 | XSETINT (delta, |
2866 | XINT (r->total_cols) - XINT (w->total_cols)); | |
e8c17b81 | 2867 | wset_left_col (w, r->left_col); |
1a13852e | 2868 | resize_root_window (window, delta, Qt, Qnil); |
d615d6d2 MR |
2869 | if (window_resize_check (w, 1)) |
2870 | window_resize_apply (w, 1); | |
1a13852e MR |
2871 | else |
2872 | { | |
2873 | resize_root_window (window, delta, Qt, Qt); | |
d615d6d2 MR |
2874 | if (window_resize_check (w, 1)) |
2875 | window_resize_apply (w, 1); | |
1a13852e MR |
2876 | else |
2877 | resize_failed = 1; | |
2878 | } | |
2879 | } | |
2880 | ||
2881 | if (resize_failed) | |
2882 | /* Play safe, if we still can ... */ | |
2883 | { | |
2884 | window = swindow; | |
2885 | w = XWINDOW (window); | |
2886 | } | |
2887 | } | |
2888 | ||
2889 | /* Cleanly unlink WINDOW from window-tree. */ | |
d3d50620 | 2890 | if (!NILP (w->prev)) |
1a13852e MR |
2891 | /* Get SIBLING above (on the left of) WINDOW. */ |
2892 | { | |
d3d50620 | 2893 | sibling = w->prev; |
1a13852e | 2894 | s = XWINDOW (sibling); |
e8c17b81 | 2895 | wset_next (s, w->next); |
d3d50620 | 2896 | if (!NILP (s->next)) |
e8c17b81 | 2897 | wset_prev (XWINDOW (s->next), sibling); |
1a13852e MR |
2898 | } |
2899 | else | |
2900 | /* Get SIBLING below (on the right of) WINDOW. */ | |
2901 | { | |
d3d50620 | 2902 | sibling = w->next; |
1a13852e | 2903 | s = XWINDOW (sibling); |
e8c17b81 | 2904 | wset_prev (s, Qnil); |
d3d50620 | 2905 | if (!NILP (XWINDOW (w->parent)->vchild)) |
e8c17b81 | 2906 | wset_vchild (XWINDOW (w->parent), sibling); |
1a13852e | 2907 | else |
e8c17b81 | 2908 | wset_hchild (XWINDOW (w->parent), sibling); |
1a13852e MR |
2909 | } |
2910 | ||
be7f5545 | 2911 | /* Delete ROOT and all child windows of ROOT. */ |
d3d50620 | 2912 | if (!NILP (r->vchild)) |
1a13852e | 2913 | { |
d3d50620 | 2914 | delete_all_child_windows (r->vchild); |
e8c17b81 | 2915 | wset_vchild (r, Qnil); |
1a13852e | 2916 | } |
d3d50620 | 2917 | else if (!NILP (r->hchild)) |
1a13852e | 2918 | { |
d3d50620 | 2919 | delete_all_child_windows (r->hchild); |
e8c17b81 | 2920 | wset_hchild (r, Qnil); |
1a13852e MR |
2921 | } |
2922 | ||
2923 | replace_window (root, window, 1); | |
2924 | ||
1a13852e | 2925 | /* This must become SWINDOW anyway ....... */ |
d3d50620 | 2926 | if (!NILP (w->buffer) && !resize_failed) |
1a13852e MR |
2927 | { |
2928 | /* Try to minimize scrolling, by setting the window start to the | |
2929 | point will cause the text at the old window start to be at the | |
2930 | same place on the frame. But don't try to do this if the | |
2931 | window start is outside the visible portion (as might happen | |
2932 | when the display is not current, due to typeahead). */ | |
2933 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2934 | if (new_top != top | |
d3d50620 DA |
2935 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) |
2936 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) | |
1a13852e MR |
2937 | { |
2938 | struct position pos; | |
2939 | struct buffer *obuf = current_buffer; | |
2940 | ||
d3d50620 | 2941 | Fset_buffer (w->buffer); |
1a13852e MR |
2942 | /* This computation used to temporarily move point, but that |
2943 | can have unwanted side effects due to text properties. */ | |
2944 | pos = *vmotion (startpos, -top, w); | |
2945 | ||
d3d50620 | 2946 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
e8c17b81 | 2947 | wset_window_end_valid (w, Qnil); |
c98ff5dd DA |
2948 | w->start_at_line_beg = (pos.bytepos == BEGV_BYTE |
2949 | || FETCH_BYTE (pos.bytepos - 1) == '\n'); | |
1a13852e MR |
2950 | /* We need to do this, so that the window-scroll-functions |
2951 | get called. */ | |
c98ff5dd | 2952 | w->optional_new_start = 1; |
1a13852e MR |
2953 | |
2954 | set_buffer_internal (obuf); | |
2955 | } | |
2956 | } | |
2957 | ||
2958 | adjust_glyphs (f); | |
4d7e6e51 | 2959 | unblock_input (); |
1a13852e MR |
2960 | |
2961 | run_window_configuration_change_hook (f); | |
2962 | ||
2963 | return Qnil; | |
2964 | } | |
2965 | ||
2966 | ||
9397e56f MR |
2967 | void |
2968 | replace_buffer_in_windows (Lisp_Object buffer) | |
7ab12479 | 2969 | { |
9397e56f | 2970 | call1 (Qreplace_buffer_in_windows, buffer); |
7ab12479 JB |
2971 | } |
2972 | ||
ff58478b | 2973 | |
9397e56f MR |
2974 | /* Safely replace BUFFER with some other buffer in all windows of all |
2975 | frames, even those on other keyboards. */ | |
ff58478b RS |
2976 | |
2977 | void | |
9397e56f | 2978 | replace_buffer_in_windows_safely (Lisp_Object buffer) |
ff58478b RS |
2979 | { |
2980 | Lisp_Object tail, frame; | |
2981 | ||
9397e56f MR |
2982 | /* A single call to window_loop won't do the job because it only |
2983 | considers frames on the current keyboard. So loop manually over | |
2984 | frames, and handle each one. */ | |
ff58478b | 2985 | FOR_EACH_FRAME (tail, frame) |
9397e56f | 2986 | window_loop (REPLACE_BUFFER_IN_WINDOWS_SAFELY, buffer, 1, frame); |
ff58478b | 2987 | } |
7ab12479 | 2988 | \f |
a481b3ea JB |
2989 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the |
2990 | minimum allowable size. */ | |
5500c422 | 2991 | |
605be8af | 2992 | void |
971de7fb | 2993 | check_frame_size (FRAME_PTR frame, int *rows, int *cols) |
a481b3ea | 2994 | { |
628df3bf | 2995 | /* For height, we have to see: |
54b8bcb5 RS |
2996 | how many windows the frame has at minimum (one or two), |
2997 | and whether it has a menu bar or other special stuff at the top. */ | |
2998 | int min_height | |
2999 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
3000 | ? MIN_SAFE_WINDOW_HEIGHT | |
3001 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 3002 | |
5500c422 GM |
3003 | if (FRAME_TOP_MARGIN (frame) > 0) |
3004 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
3005 | |
3006 | if (*rows < min_height) | |
3007 | *rows = min_height; | |
3008 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
3009 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
3010 | } | |
3011 | ||
79fd290e | 3012 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
3013 | Return 1 if window width is ok after adjustment; 0 if window |
3014 | is still too narrow. */ | |
3015 | ||
3016 | static int | |
971de7fb | 3017 | adjust_window_margins (struct window *w) |
949cf20f KS |
3018 | { |
3019 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
3020 | - WINDOW_FRINGE_COLS (w) | |
3021 | - WINDOW_SCROLL_BAR_COLS (w)); | |
3022 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
3023 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
3024 | ||
3025 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
3026 | return 1; | |
3027 | ||
3028 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
3029 | return 0; | |
3030 | ||
3031 | /* Window's text area is too narrow, but reducing the window | |
3032 | margins will fix that. */ | |
3033 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
3034 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
3035 | { | |
3036 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
077288cf | 3037 | { |
e8c17b81 PE |
3038 | wset_left_margin_cols (w, make_number (margin_cols / 2)); |
3039 | wset_right_margin_cols (w, make_number (margin_cols / 2)); | |
077288cf | 3040 | } |
949cf20f | 3041 | else |
e8c17b81 | 3042 | wset_right_margin_cols (w, make_number (margin_cols)); |
949cf20f KS |
3043 | } |
3044 | else | |
e8c17b81 | 3045 | wset_left_margin_cols (w, make_number (margin_cols)); |
949cf20f KS |
3046 | return 1; |
3047 | } | |
562dd5e9 | 3048 | \f |
9397e56f MR |
3049 | /* The following three routines are needed for running a window's |
3050 | configuration change hook. */ | |
562dd5e9 MR |
3051 | static void |
3052 | run_funs (Lisp_Object funs) | |
3053 | { | |
3054 | for (; CONSP (funs); funs = XCDR (funs)) | |
3055 | if (!EQ (XCAR (funs), Qt)) | |
3056 | call0 (XCAR (funs)); | |
3057 | } | |
6b61353c | 3058 | |
9397e56f MR |
3059 | static Lisp_Object |
3060 | select_window_norecord (Lisp_Object window) | |
3061 | { | |
3062 | return WINDOW_LIVE_P (window) | |
3063 | ? Fselect_window (window, Qt) : selected_window; | |
3064 | } | |
3065 | ||
3066 | static Lisp_Object | |
3067 | select_frame_norecord (Lisp_Object frame) | |
3068 | { | |
3069 | return FRAME_LIVE_P (XFRAME (frame)) | |
3070 | ? Fselect_frame (frame, Qt) : selected_frame; | |
3071 | } | |
6b61353c | 3072 | |
562dd5e9 MR |
3073 | void |
3074 | run_window_configuration_change_hook (struct frame *f) | |
3075 | { | |
d311d28c | 3076 | ptrdiff_t count = SPECPDL_INDEX (); |
562dd5e9 MR |
3077 | Lisp_Object frame, global_wcch |
3078 | = Fdefault_value (Qwindow_configuration_change_hook); | |
3079 | XSETFRAME (frame, f); | |
6b61353c | 3080 | |
d1f55f16 | 3081 | if (NILP (Vrun_hooks) || !NILP (inhibit_lisp_code)) |
562dd5e9 | 3082 | return; |
6b61353c | 3083 | |
562dd5e9 MR |
3084 | /* Use the right buffer. Matters when running the local hooks. */ |
3085 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
6b61353c | 3086 | { |
66322887 | 3087 | record_unwind_current_buffer (); |
562dd5e9 MR |
3088 | Fset_buffer (Fwindow_buffer (Qnil)); |
3089 | } | |
6a44ffb3 | 3090 | |
1a13852e MR |
3091 | if (SELECTED_FRAME () != f) |
3092 | { | |
3093 | record_unwind_protect (select_frame_norecord, Fselected_frame ()); | |
3094 | select_frame_norecord (frame); | |
3095 | } | |
3096 | ||
6a44ffb3 SM |
3097 | /* Look for buffer-local values. */ |
3098 | { | |
3099 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
3100 | for (; CONSP (windows); windows = XCDR (windows)) | |
3101 | { | |
3102 | Lisp_Object window = XCAR (windows); | |
3103 | Lisp_Object buffer = Fwindow_buffer (window); | |
3104 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
3105 | buffer))) | |
3106 | { | |
d311d28c | 3107 | ptrdiff_t inner_count = SPECPDL_INDEX (); |
6a44ffb3 SM |
3108 | record_unwind_protect (select_window_norecord, Fselected_window ()); |
3109 | select_window_norecord (window); | |
3110 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
3111 | buffer)); | |
46a4ce9e | 3112 | unbind_to (inner_count, Qnil); |
fec89261 | 3113 | } |
6a44ffb3 SM |
3114 | } |
3115 | } | |
047aaeb9 | 3116 | |
6a44ffb3 SM |
3117 | run_funs (global_wcch); |
3118 | unbind_to (count, Qnil); | |
ef264c42 SM |
3119 | } |
3120 | ||
1a13852e MR |
3121 | DEFUN ("run-window-configuration-change-hook", Frun_window_configuration_change_hook, |
3122 | Srun_window_configuration_change_hook, 1, 1, 0, | |
3123 | doc: /* Run `window-configuration-change-hook' for FRAME. */) | |
c4b6914d | 3124 | (Lisp_Object frame) |
1a13852e MR |
3125 | { |
3126 | CHECK_LIVE_FRAME (frame); | |
3127 | run_window_configuration_change_hook (XFRAME (frame)); | |
3128 | return Qnil; | |
3129 | } | |
3130 | ||
5500c422 GM |
3131 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3132 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3133 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3134 | margins, fringes, and scroll-bar settings of the window are not | |
3135 | reset from the buffer's local settings. */ | |
7ab12479 | 3136 | |
5500c422 | 3137 | void |
971de7fb | 3138 | set_window_buffer (Lisp_Object window, Lisp_Object buffer, int run_hooks_p, int keep_margins_p) |
5500c422 GM |
3139 | { |
3140 | struct window *w = XWINDOW (window); | |
3141 | struct buffer *b = XBUFFER (buffer); | |
d311d28c | 3142 | ptrdiff_t count = SPECPDL_INDEX (); |
d3d50620 | 3143 | int samebuf = EQ (buffer, w->buffer); |
7ab12479 | 3144 | |
e8c17b81 | 3145 | wset_buffer (w, buffer); |
86e48436 RS |
3146 | |
3147 | if (EQ (window, selected_window)) | |
39eb03f1 | 3148 | bset_last_selected_window (b, window); |
beb4e312 | 3149 | |
c49a0495 KS |
3150 | /* Let redisplay errors through. */ |
3151 | b->display_error_modiff = 0; | |
3152 | ||
beb4e312 | 3153 | /* Update time stamps of buffer display. */ |
4b4deea2 | 3154 | if (INTEGERP (BVAR (b, display_count))) |
39eb03f1 PE |
3155 | bset_display_count (b, make_number (XINT (BVAR (b, display_count)) + 1)); |
3156 | bset_display_time (b, Fcurrent_time ()); | |
86e48436 | 3157 | |
e8c17b81 PE |
3158 | wset_window_end_pos (w, make_number (0)); |
3159 | wset_window_end_vpos (w, make_number (0)); | |
72af86bd | 3160 | memset (&w->last_cursor, 0, sizeof w->last_cursor); |
e8c17b81 | 3161 | wset_window_end_valid (w, Qnil); |
c3b232e4 | 3162 | if (!(keep_margins_p && samebuf)) |
23fe745a | 3163 | { /* If we're not actually changing the buffer, don't reset hscroll and |
c3b232e4 SM |
3164 | vscroll. This case happens for example when called from |
3165 | change_frame_size_1, where we use a dummy call to | |
3166 | Fset_window_buffer on the frame's selected window (and no other) | |
3167 | just in order to run window-configuration-change-hook. | |
3168 | Resetting hscroll and vscroll here is problematic for things like | |
3169 | image-mode and doc-view-mode since it resets the image's position | |
3170 | whenever we resize the frame. */ | |
80b00b08 | 3171 | w->hscroll = w->min_hscroll = 0; |
c3b232e4 | 3172 | w->vscroll = 0; |
d3d50620 DA |
3173 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
3174 | set_marker_restricted (w->start, | |
c3b232e4 SM |
3175 | make_number (b->last_window_start), |
3176 | buffer); | |
c98ff5dd DA |
3177 | w->start_at_line_beg = 0; |
3178 | w->force_start = 0; | |
80b00b08 DA |
3179 | w->last_modified = 0; |
3180 | w->last_overlay_modified = 0; | |
c3b232e4 SM |
3181 | } |
3182 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
3183 | I doubt it's worth the trouble. */ | |
7ab12479 | 3184 | windows_or_buffers_changed++; |
5b03d3c0 | 3185 | |
da39107c | 3186 | /* We must select BUFFER for running the window-scroll-functions. */ |
5b03d3c0 RS |
3187 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3188 | because that might itself be a local variable. */ | |
da39107c | 3189 | if (window_initialized) |
5b03d3c0 | 3190 | { |
66322887 | 3191 | record_unwind_current_buffer (); |
5b03d3c0 RS |
3192 | Fset_buffer (buffer); |
3193 | } | |
3194 | ||
d3d50620 | 3195 | XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type); |
a1562258 | 3196 | |
949cf20f KS |
3197 | if (!keep_margins_p) |
3198 | { | |
3199 | /* Set left and right marginal area width etc. from buffer. */ | |
3200 | ||
79fd290e | 3201 | /* This may call adjust_window_margins three times, so |
949cf20f | 3202 | temporarily disable window margins. */ |
d3d50620 DA |
3203 | Lisp_Object save_left = w->left_margin_cols; |
3204 | Lisp_Object save_right = w->right_margin_cols; | |
6b61353c | 3205 | |
e8c17b81 PE |
3206 | wset_left_margin_cols (w, Qnil); |
3207 | wset_right_margin_cols (w, Qnil); | |
949cf20f KS |
3208 | |
3209 | Fset_window_fringes (window, | |
4b4deea2 TT |
3210 | BVAR (b, left_fringe_width), BVAR (b, right_fringe_width), |
3211 | BVAR (b, fringes_outside_margins)); | |
949cf20f KS |
3212 | |
3213 | Fset_window_scroll_bars (window, | |
4b4deea2 TT |
3214 | BVAR (b, scroll_bar_width), |
3215 | BVAR (b, vertical_scroll_bar_type), Qnil); | |
949cf20f | 3216 | |
e8c17b81 PE |
3217 | wset_left_margin_cols (w, save_left); |
3218 | wset_right_margin_cols (w, save_right); | |
6b61353c | 3219 | |
949cf20f | 3220 | Fset_window_margins (window, |
4b4deea2 | 3221 | BVAR (b, left_margin_cols), BVAR (b, right_margin_cols)); |
949cf20f | 3222 | } |
7ab12479 | 3223 | |
5500c422 GM |
3224 | if (run_hooks_p) |
3225 | { | |
3226 | if (! NILP (Vwindow_scroll_functions)) | |
3227 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
d3d50620 | 3228 | Fmarker_position (w->start)); |
ef264c42 | 3229 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
5500c422 | 3230 | } |
543f5fb1 | 3231 | |
5b03d3c0 | 3232 | unbind_to (count, Qnil); |
5500c422 | 3233 | } |
5b03d3c0 | 3234 | |
a7ca3326 | 3235 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
d653c8cc | 3236 | doc: /* Make WINDOW display BUFFER-OR-NAME as its contents. |
52162052 | 3237 | WINDOW must be a live window and defaults to the selected one. |
9397e56f MR |
3238 | BUFFER-OR-NAME must be a buffer or the name of an existing buffer. |
3239 | ||
3240 | Optional third argument KEEP-MARGINS non-nil means that WINDOW's current | |
3241 | display margins, fringe widths, and scroll bar settings are preserved; | |
3242 | the default is to reset these from the local settings for BUFFER-OR-NAME | |
3243 | or the frame defaults. Return nil. | |
d653c8cc | 3244 | |
7bfac547 MR |
3245 | This function throws an error when WINDOW is strongly dedicated to its |
3246 | buffer (that is `window-dedicated-p' returns t for WINDOW) and does not | |
3247 | already display BUFFER-OR-NAME. | |
6cb4a892 | 3248 | |
8fef9de1 MR |
3249 | This function runs `window-scroll-functions' before running |
3250 | `window-configuration-change-hook'. */) | |
5842a27b | 3251 | (register Lisp_Object window, Lisp_Object buffer_or_name, Lisp_Object keep_margins) |
5500c422 | 3252 | { |
d653c8cc | 3253 | register Lisp_Object tem, buffer; |
52162052 | 3254 | register struct window *w = decode_live_window (window); |
5500c422 | 3255 | |
bed0c171 | 3256 | XSETWINDOW (window, w); |
d653c8cc | 3257 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 3258 | CHECK_BUFFER (buffer); |
e578f381 | 3259 | if (!BUFFER_LIVE_P (XBUFFER (buffer))) |
5500c422 GM |
3260 | error ("Attempt to display deleted buffer"); |
3261 | ||
d3d50620 | 3262 | tem = w->buffer; |
aac0c6e3 MR |
3263 | if (NILP (tem)) |
3264 | error ("Window is deleted"); | |
3265 | else if (!EQ (tem, Qt)) | |
d653c8cc | 3266 | /* w->buffer is t when the window is first being set up. */ |
5500c422 | 3267 | { |
9397e56f MR |
3268 | if (!EQ (tem, buffer)) |
3269 | { | |
d3d50620 | 3270 | if (EQ (w->dedicated, Qt)) |
9397e56f MR |
3271 | /* WINDOW is strongly dedicated to its buffer, signal an |
3272 | error. */ | |
3273 | error ("Window is dedicated to `%s'", SDATA (BVAR (XBUFFER (tem), name))); | |
3274 | else | |
3275 | /* WINDOW is weakly dedicated to its buffer, reset | |
e4769531 | 3276 | dedication. */ |
e8c17b81 | 3277 | wset_dedicated (w, Qnil); |
9397e56f MR |
3278 | |
3279 | call1 (Qrecord_window_buffer, window); | |
3280 | } | |
5500c422 GM |
3281 | |
3282 | unshow_buffer (w); | |
3283 | } | |
3284 | ||
949cf20f | 3285 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 | 3286 | |
9397e56f | 3287 | return Qnil; |
c6932ecd | 3288 | } |
b7354ddf | 3289 | \f |
7e5cf297 | 3290 | static Lisp_Object |
971de7fb | 3291 | display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, Lisp_Object override_frame) |
d07f802a | 3292 | { |
87478b52 | 3293 | return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); |
d07f802a RS |
3294 | } |
3295 | ||
6b61353c KH |
3296 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, |
3297 | 0, 1, 0, | |
5a1048a5 | 3298 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 3299 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3300 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c | 3301 | displaying that buffer. */) |
5842a27b | 3302 | (Lisp_Object object) |
6b61353c KH |
3303 | { |
3304 | if (NILP (object)) | |
3305 | { | |
3306 | windows_or_buffers_changed++; | |
3307 | update_mode_lines++; | |
3308 | return Qt; | |
3309 | } | |
3310 | ||
3311 | if (WINDOWP (object)) | |
3312 | { | |
3313 | struct window *w = XWINDOW (object); | |
3314 | mark_window_display_accurate (object, 0); | |
c98ff5dd | 3315 | w->update_mode_line = 1; |
d3d50620 DA |
3316 | if (BUFFERP (w->buffer)) |
3317 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
6b61353c KH |
3318 | ++update_mode_lines; |
3319 | return Qt; | |
3320 | } | |
0cc1039f | 3321 | |
6b61353c KH |
3322 | if (STRINGP (object)) |
3323 | object = Fget_buffer (object); | |
e578f381 | 3324 | if (BUFFERP (object) && BUFFER_LIVE_P (XBUFFER (object))) |
6b61353c KH |
3325 | { |
3326 | /* Walk all windows looking for buffer, and force update | |
3327 | of each of those windows. */ | |
3328 | ||
3329 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); | |
3330 | return NILP (object) ? Qnil : Qt; | |
3331 | } | |
3332 | ||
3333 | /* If nothing suitable was found, just return. | |
3334 | We could signal an error, but this feature will typically be used | |
3335 | asynchronously in timers or process sentinels, so we don't. */ | |
3336 | return Qnil; | |
3337 | } | |
3338 | ||
1f76f6f5 | 3339 | /* Obsolete since 24.3. */ |
7ab12479 | 3340 | void |
971de7fb | 3341 | temp_output_buffer_show (register Lisp_Object buf) |
7ab12479 JB |
3342 | { |
3343 | register struct buffer *old = current_buffer; | |
3344 | register Lisp_Object window; | |
3345 | register struct window *w; | |
3346 | ||
39eb03f1 | 3347 | bset_directory (XBUFFER (buf), BVAR (current_buffer, directory)); |
bccd3dd1 | 3348 | |
7ab12479 | 3349 | Fset_buffer (buf); |
c6367666 | 3350 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3351 | BEGV = BEG; |
3352 | ZV = Z; | |
3353 | SET_PT (BEG); | |
7ab12479 JB |
3354 | set_buffer_internal (old); |
3355 | ||
e67a1dea | 3356 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3357 | call1 (Vtemp_buffer_show_function, buf); |
3358 | else | |
3359 | { | |
4ee88440 | 3360 | window = display_buffer (buf, Qnil, Qnil); |
7ab12479 | 3361 | |
d3d50620 | 3362 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3363 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3364 | Vminibuf_scroll_window = window; |
3365 | w = XWINDOW (window); | |
80b00b08 DA |
3366 | w->hscroll = 0; |
3367 | w->min_hscroll = 0; | |
d3d50620 DA |
3368 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3369 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3370 | |
beb4e312 | 3371 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3372 | and its buffer current. */ |
dee091a3 | 3373 | { |
d311d28c | 3374 | ptrdiff_t count = SPECPDL_INDEX (); |
dee091a3 JD |
3375 | Lisp_Object prev_window, prev_buffer; |
3376 | prev_window = selected_window; | |
3377 | XSETBUFFER (prev_buffer, old); | |
3378 | ||
3379 | /* Select the window that was chosen, for running the hook. | |
3380 | Note: Both Fselect_window and select_window_norecord may | |
3381 | set-buffer to the buffer displayed in the window, | |
3382 | so we need to save the current buffer. --stef */ | |
3383 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3384 | record_unwind_protect (select_window_norecord, prev_window); | |
3385 | Fselect_window (window, Qt); | |
d3d50620 | 3386 | Fset_buffer (w->buffer); |
dee091a3 JD |
3387 | Frun_hooks (1, &Qtemp_buffer_show_hook); |
3388 | unbind_to (count, Qnil); | |
3389 | } | |
2cccc823 | 3390 | } |
7ab12479 JB |
3391 | } |
3392 | \f | |
1a13852e MR |
3393 | /* Make new window, have it replace WINDOW in window-tree, and make |
3394 | WINDOW its only vertical child (HORFLAG 1 means make WINDOW its only | |
3395 | horizontal child). */ | |
3396 | static void | |
3397 | make_parent_window (Lisp_Object window, int horflag) | |
3398 | { | |
3399 | Lisp_Object parent; | |
3400 | register struct window *o, *p; | |
1a13852e MR |
3401 | |
3402 | o = XWINDOW (window); | |
3403 | p = allocate_window (); | |
aa754e6a | 3404 | memcpy ((char *) p + sizeof (struct vectorlike_header), |
62efea5e | 3405 | (char *) o + sizeof (struct vectorlike_header), |
663e2b3f | 3406 | word_size * VECSIZE (struct window)); |
1a13852e MR |
3407 | XSETWINDOW (parent, p); |
3408 | ||
45942c7d | 3409 | p->sequence_number = ++sequence_number; |
1a13852e MR |
3410 | |
3411 | replace_window (window, parent, 1); | |
3412 | ||
e8c17b81 PE |
3413 | wset_next (o, Qnil); |
3414 | wset_prev (o, Qnil); | |
3415 | wset_parent (o, parent); | |
1a13852e | 3416 | |
e8c17b81 PE |
3417 | wset_hchild (p, horflag ? window : Qnil); |
3418 | wset_vchild (p, horflag ? Qnil : window); | |
3419 | wset_start (p, Qnil); | |
3420 | wset_pointm (p, Qnil); | |
3421 | wset_buffer (p, Qnil); | |
3422 | wset_combination_limit (p, Qnil); | |
3423 | wset_window_parameters (p, Qnil); | |
1a13852e MR |
3424 | } |
3425 | ||
496e208e MR |
3426 | /* Make new window from scratch. */ |
3427 | Lisp_Object | |
3428 | make_window (void) | |
3429 | { | |
3430 | Lisp_Object window; | |
3431 | register struct window *w; | |
3432 | ||
3433 | w = allocate_window (); | |
62efea5e DA |
3434 | /* Initialize Lisp data. Note that allocate_window initializes all |
3435 | Lisp data to nil, so do it only for slots which should not be nil. */ | |
e8c17b81 PE |
3436 | wset_left_col (w, make_number (0)); |
3437 | wset_top_line (w, make_number (0)); | |
3438 | wset_total_lines (w, make_number (0)); | |
3439 | wset_total_cols (w, make_number (0)); | |
3440 | wset_normal_lines (w, make_float (1.0)); | |
3441 | wset_normal_cols (w, make_float (1.0)); | |
3442 | wset_new_total (w, make_number (0)); | |
3443 | wset_new_normal (w, make_number (0)); | |
3444 | wset_start (w, Fmake_marker ()); | |
3445 | wset_pointm (w, Fmake_marker ()); | |
3446 | wset_vertical_scroll_bar_type (w, Qt); | |
3447 | wset_window_end_pos (w, make_number (0)); | |
3448 | wset_window_end_vpos (w, make_number (0)); | |
e99f70c8 SM |
3449 | /* These Lisp fields are marked specially so they're not set to nil by |
3450 | allocate_window. */ | |
3451 | wset_prev_buffers (w, Qnil); | |
3452 | wset_next_buffers (w, Qnil); | |
62efea5e DA |
3453 | |
3454 | /* Initialize non-Lisp data. Note that allocate_window zeroes out all | |
3455 | non-Lisp data, so do it only for slots which should not be zero. */ | |
496e208e | 3456 | w->nrows_scale_factor = w->ncols_scale_factor = 1; |
496e208e MR |
3457 | w->phys_cursor_type = -1; |
3458 | w->phys_cursor_width = -1; | |
45942c7d | 3459 | w->sequence_number = ++sequence_number; |
62efea5e | 3460 | |
496e208e MR |
3461 | /* Reset window_list. */ |
3462 | Vwindow_list = Qnil; | |
3463 | /* Return window. */ | |
3464 | XSETWINDOW (window, w); | |
3465 | return window; | |
3466 | } | |
3467 | \f | |
3468 | DEFUN ("set-window-new-total", Fset_window_new_total, Sset_window_new_total, 2, 3, 0, | |
3469 | doc: /* Set new total size of WINDOW to SIZE. | |
52162052 | 3470 | WINDOW must be a valid window and defaults to the selected one. |
496e208e MR |
3471 | Return SIZE. |
3472 | ||
3473 | Optional argument ADD non-nil means add SIZE to the new total size of | |
3474 | WINDOW and return the sum. | |
3475 | ||
be7f5545 | 3476 | Note: This function does not operate on any child windows of WINDOW. */) |
496e208e MR |
3477 | (Lisp_Object window, Lisp_Object size, Lisp_Object add) |
3478 | { | |
52162052 | 3479 | struct window *w = decode_valid_window (window); |
496e208e MR |
3480 | |
3481 | CHECK_NUMBER (size); | |
3482 | if (NILP (add)) | |
e8c17b81 | 3483 | wset_new_total (w, size); |
496e208e | 3484 | else |
e8c17b81 | 3485 | wset_new_total (w, make_number (XINT (w->new_total) + XINT (size))); |
496e208e | 3486 | |
d3d50620 | 3487 | return w->new_total; |
496e208e MR |
3488 | } |
3489 | ||
3490 | DEFUN ("set-window-new-normal", Fset_window_new_normal, Sset_window_new_normal, 1, 2, 0, | |
3491 | doc: /* Set new normal size of WINDOW to SIZE. | |
52162052 | 3492 | WINDOW must be a valid window and defaults to the selected one. |
496e208e MR |
3493 | Return SIZE. |
3494 | ||
be7f5545 | 3495 | Note: This function does not operate on any child windows of WINDOW. */) |
496e208e MR |
3496 | (Lisp_Object window, Lisp_Object size) |
3497 | { | |
e8c17b81 PE |
3498 | wset_new_normal (decode_valid_window (window), size); |
3499 | return size; | |
7ab12479 JB |
3500 | } |
3501 | ||
1a13852e MR |
3502 | /* Return 1 if setting w->total_lines (w->total_cols if HORFLAG is |
3503 | non-zero) to w->new_total would result in correct heights (widths) | |
be7f5545 | 3504 | for window W and recursively all child windows of W. |
1a13852e MR |
3505 | |
3506 | Note: This function does not check any of `window-fixed-size-p', | |
3507 | `window-min-height' or `window-min-width'. It does check that window | |
3508 | sizes do not drop below one line (two columns). */ | |
4b66faf3 | 3509 | static int |
d615d6d2 | 3510 | window_resize_check (struct window *w, int horflag) |
1a13852e MR |
3511 | { |
3512 | struct window *c; | |
3513 | ||
d3d50620 | 3514 | if (!NILP (w->vchild)) |
1a13852e MR |
3515 | /* W is a vertical combination. */ |
3516 | { | |
d3d50620 | 3517 | c = XWINDOW (w->vchild); |
1a13852e | 3518 | if (horflag) |
be7f5545 | 3519 | /* All child windows of W must have the same width as W. */ |
1a13852e MR |
3520 | { |
3521 | while (c) | |
3522 | { | |
d3d50620 | 3523 | if ((XINT (c->new_total) != XINT (w->new_total)) |
d615d6d2 | 3524 | || !window_resize_check (c, horflag)) |
1a13852e | 3525 | return 0; |
d3d50620 | 3526 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3527 | } |
3528 | return 1; | |
3529 | } | |
3530 | else | |
be7f5545 MR |
3531 | /* The sum of the heights of the child windows of W must equal |
3532 | W's height. */ | |
1a13852e MR |
3533 | { |
3534 | int sum_of_sizes = 0; | |
3535 | while (c) | |
3536 | { | |
d615d6d2 | 3537 | if (!window_resize_check (c, horflag)) |
1a13852e | 3538 | return 0; |
d3d50620 DA |
3539 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); |
3540 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e | 3541 | } |
d3d50620 | 3542 | return (sum_of_sizes == XINT (w->new_total)); |
1a13852e MR |
3543 | } |
3544 | } | |
d3d50620 | 3545 | else if (!NILP (w->hchild)) |
1a13852e MR |
3546 | /* W is a horizontal combination. */ |
3547 | { | |
d3d50620 | 3548 | c = XWINDOW (w->hchild); |
1a13852e | 3549 | if (horflag) |
be7f5545 | 3550 | /* The sum of the widths of the child windows of W must equal W's |
1a13852e MR |
3551 | width. */ |
3552 | { | |
3553 | int sum_of_sizes = 0; | |
3554 | while (c) | |
3555 | { | |
d615d6d2 | 3556 | if (!window_resize_check (c, horflag)) |
1a13852e | 3557 | return 0; |
d3d50620 DA |
3558 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); |
3559 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e | 3560 | } |
d3d50620 | 3561 | return (sum_of_sizes == XINT (w->new_total)); |
1a13852e MR |
3562 | } |
3563 | else | |
be7f5545 | 3564 | /* All child windows of W must have the same height as W. */ |
1a13852e MR |
3565 | { |
3566 | while (c) | |
3567 | { | |
d3d50620 | 3568 | if ((XINT (c->new_total) != XINT (w->new_total)) |
d615d6d2 | 3569 | || !window_resize_check (c, horflag)) |
1a13852e | 3570 | return 0; |
d3d50620 | 3571 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3572 | } |
3573 | return 1; | |
3574 | } | |
3575 | } | |
3576 | else | |
3577 | /* A leaf window. Make sure it's not too small. The following | |
3578 | hardcodes the values of `window-safe-min-width' (2) and | |
3579 | `window-safe-min-height' (1) which are defined in window.el. */ | |
d3d50620 | 3580 | return XINT (w->new_total) >= (horflag ? 2 : 1); |
1a13852e MR |
3581 | } |
3582 | ||
3583 | /* Set w->total_lines (w->total_cols if HORIZONTAL is non-zero) to | |
be7f5545 MR |
3584 | w->new_total for window W and recursively all child windows of W. |
3585 | Also calculate and assign the new vertical (horizontal) start | |
3586 | positions of each of these windows. | |
1a13852e MR |
3587 | |
3588 | This function does not perform any error checks. Make sure you have | |
d615d6d2 | 3589 | run window_resize_check on W before applying this function. */ |
440a42e3 | 3590 | static void |
d615d6d2 | 3591 | window_resize_apply (struct window *w, int horflag) |
1a13852e | 3592 | { |
46a4ce9e | 3593 | struct window *c; |
1a13852e MR |
3594 | int pos; |
3595 | ||
3596 | /* Note: Assigning new_normal requires that the new total size of the | |
3597 | parent window has been set *before*. */ | |
3598 | if (horflag) | |
3599 | { | |
e8c17b81 | 3600 | wset_total_cols (w, w->new_total); |
d3d50620 | 3601 | if (NUMBERP (w->new_normal)) |
e8c17b81 | 3602 | wset_normal_cols (w, w->new_normal); |
1a13852e | 3603 | |
d3d50620 | 3604 | pos = XINT (w->left_col); |
1a13852e MR |
3605 | } |
3606 | else | |
3607 | { | |
e8c17b81 | 3608 | wset_total_lines (w, w->new_total); |
d3d50620 | 3609 | if (NUMBERP (w->new_normal)) |
e8c17b81 | 3610 | wset_normal_lines (w, w->new_normal); |
1a13852e | 3611 | |
d3d50620 | 3612 | pos = XINT (w->top_line); |
1a13852e MR |
3613 | } |
3614 | ||
d3d50620 | 3615 | if (!NILP (w->vchild)) |
1a13852e MR |
3616 | /* W is a vertical combination. */ |
3617 | { | |
d3d50620 | 3618 | c = XWINDOW (w->vchild); |
1a13852e MR |
3619 | while (c) |
3620 | { | |
3621 | if (horflag) | |
e8c17b81 | 3622 | wset_left_col (c, make_number (pos)); |
1a13852e | 3623 | else |
e8c17b81 | 3624 | wset_top_line (c, make_number (pos)); |
d615d6d2 | 3625 | window_resize_apply (c, horflag); |
1a13852e | 3626 | if (!horflag) |
d3d50620 DA |
3627 | pos = pos + XINT (c->total_lines); |
3628 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e MR |
3629 | } |
3630 | } | |
d3d50620 | 3631 | else if (!NILP (w->hchild)) |
1a13852e MR |
3632 | /* W is a horizontal combination. */ |
3633 | { | |
d3d50620 | 3634 | c = XWINDOW (w->hchild); |
1a13852e MR |
3635 | while (c) |
3636 | { | |
3637 | if (horflag) | |
e8c17b81 | 3638 | wset_left_col (c, make_number (pos)); |
1a13852e | 3639 | else |
e8c17b81 | 3640 | wset_top_line (c, make_number (pos)); |
d615d6d2 | 3641 | window_resize_apply (c, horflag); |
1a13852e | 3642 | if (horflag) |
d3d50620 DA |
3643 | pos = pos + XINT (c->total_cols); |
3644 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e MR |
3645 | } |
3646 | } | |
3647 | ||
3648 | /* Clear out some redisplay caches. */ | |
80b00b08 DA |
3649 | w->last_modified = 0; |
3650 | w->last_overlay_modified = 0; | |
1a13852e MR |
3651 | } |
3652 | ||
3653 | ||
d615d6d2 | 3654 | DEFUN ("window-resize-apply", Fwindow_resize_apply, Swindow_resize_apply, 1, 2, 0, |
1a13852e MR |
3655 | doc: /* Apply requested size values for window-tree of FRAME. |
3656 | Optional argument HORIZONTAL omitted or nil means apply requested height | |
3657 | values. HORIZONTAL non-nil means apply requested width values. | |
3658 | ||
3659 | This function checks whether the requested values sum up to a valid | |
be7f5545 MR |
3660 | window layout, recursively assigns the new sizes of all child windows |
3661 | and calculates and assigns the new start positions of these windows. | |
1a13852e MR |
3662 | |
3663 | Note: This function does not check any of `window-fixed-size-p', | |
3664 | `window-min-height' or `window-min-width'. All these checks have to | |
3665 | be applied on the Elisp level. */) | |
3666 | (Lisp_Object frame, Lisp_Object horizontal) | |
3667 | { | |
3668 | struct frame *f; | |
3669 | struct window *r; | |
3670 | int horflag = !NILP (horizontal); | |
3671 | ||
3672 | if (NILP (frame)) | |
3673 | frame = selected_frame; | |
3674 | CHECK_LIVE_FRAME (frame); | |
3675 | ||
3676 | f = XFRAME (frame); | |
3677 | r = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
3678 | ||
d615d6d2 | 3679 | if (!window_resize_check (r, horflag) |
d3d50620 DA |
3680 | || ! EQ (r->new_total, |
3681 | (horflag ? r->total_cols : r->total_lines))) | |
1a13852e MR |
3682 | return Qnil; |
3683 | ||
4d7e6e51 | 3684 | block_input (); |
d615d6d2 | 3685 | window_resize_apply (r, horflag); |
1a13852e MR |
3686 | |
3687 | windows_or_buffers_changed++; | |
3688 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3689 | ||
3690 | adjust_glyphs (f); | |
4d7e6e51 | 3691 | unblock_input (); |
1a13852e MR |
3692 | |
3693 | run_window_configuration_change_hook (f); | |
3694 | ||
3695 | return Qt; | |
3696 | } | |
3697 | ||
3698 | ||
3699 | /* Resize frame F's windows when number of lines of F is set to SIZE. | |
3700 | HORFLAG 1 means resize windows when number of columns of F is set to | |
3701 | SIZE. | |
3702 | ||
3703 | This function can delete all windows but the selected one in order to | |
3704 | satisfy the request. The result will be meaningful if and only if | |
3705 | F's windows have meaningful sizes when you call this. */ | |
3706 | void | |
3707 | resize_frame_windows (struct frame *f, int size, int horflag) | |
3708 | { | |
e69b0960 | 3709 | Lisp_Object root = f->root_window; |
1a13852e | 3710 | struct window *r = XWINDOW (root); |
e69b0960 | 3711 | Lisp_Object mini = f->minibuffer_window; |
1a13852e MR |
3712 | struct window *m; |
3713 | /* new_size is the new size of the frame's root window. */ | |
3714 | int new_size = (horflag | |
3715 | ? size | |
3716 | : (size | |
3717 | - FRAME_TOP_MARGIN (f) | |
3718 | - ((FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3719 | ? 1 : 0))); | |
3720 | ||
e8c17b81 | 3721 | wset_top_line (r, make_number (FRAME_TOP_MARGIN (f))); |
d3d50620 | 3722 | if (NILP (r->vchild) && NILP (r->hchild)) |
1a13852e MR |
3723 | /* For a leaf root window just set the size. */ |
3724 | if (horflag) | |
e8c17b81 | 3725 | wset_total_cols (r, make_number (new_size)); |
1a13852e | 3726 | else |
e8c17b81 | 3727 | wset_total_lines (r, make_number (new_size)); |
1a13852e MR |
3728 | else |
3729 | { | |
3730 | /* old_size is the old size of the frame's root window. */ | |
f00af5b1 | 3731 | int old_size = XFASTINT (horflag ? r->total_cols |
d3d50620 | 3732 | : r->total_lines); |
1a13852e MR |
3733 | Lisp_Object delta; |
3734 | ||
3735 | XSETINT (delta, new_size - old_size); | |
3736 | /* Try a "normal" resize first. */ | |
3737 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qnil); | |
3a45383a | 3738 | if (window_resize_check (r, horflag) |
d3d50620 | 3739 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3740 | window_resize_apply (r, horflag); |
1a13852e MR |
3741 | else |
3742 | { | |
3743 | /* Try with "reasonable" minimum sizes next. */ | |
3744 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qt); | |
d615d6d2 | 3745 | if (window_resize_check (r, horflag) |
d3d50620 | 3746 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3747 | window_resize_apply (r, horflag); |
1a13852e MR |
3748 | else |
3749 | { | |
3750 | /* Finally, try with "safe" minimum sizes. */ | |
3751 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qsafe); | |
d615d6d2 | 3752 | if (window_resize_check (r, horflag) |
d3d50620 | 3753 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3754 | window_resize_apply (r, horflag); |
1a13852e MR |
3755 | else |
3756 | { | |
3757 | /* We lost. Delete all windows but the frame's | |
3758 | selected one. */ | |
e69b0960 | 3759 | root = f->selected_window; |
1a13852e MR |
3760 | Fdelete_other_windows_internal (root, Qnil); |
3761 | if (horflag) | |
e8c17b81 | 3762 | wset_total_cols (XWINDOW (root), make_number (new_size)); |
1a13852e | 3763 | else |
e8c17b81 | 3764 | wset_total_lines (XWINDOW (root), make_number (new_size)); |
1a13852e MR |
3765 | } |
3766 | } | |
3767 | } | |
3768 | } | |
3769 | ||
3770 | if (FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3771 | { | |
3772 | m = XWINDOW (mini); | |
3773 | if (horflag) | |
e8c17b81 | 3774 | wset_total_cols (m, make_number (size)); |
1a13852e MR |
3775 | else |
3776 | { | |
3777 | /* Are we sure we always want 1 line here? */ | |
e8c17b81 PE |
3778 | wset_total_lines (m, make_number (1)); |
3779 | wset_top_line | |
3780 | (m, make_number (XINT (r->top_line) + XINT (r->total_lines))); | |
1a13852e MR |
3781 | } |
3782 | } | |
dca778d5 MR |
3783 | |
3784 | windows_or_buffers_changed++; | |
1a13852e MR |
3785 | } |
3786 | ||
3787 | ||
3788 | DEFUN ("split-window-internal", Fsplit_window_internal, Ssplit_window_internal, 4, 4, 0, | |
3789 | doc: /* Split window OLD. | |
3790 | Second argument TOTAL-SIZE specifies the number of lines or columns of the | |
9397e56f | 3791 | new window. In any case TOTAL-SIZE must be a positive integer. |
1a13852e MR |
3792 | |
3793 | Third argument SIDE nil (or `below') specifies that the new window shall | |
3794 | be located below WINDOW. SIDE `above' means the new window shall be | |
3795 | located above WINDOW. In both cases TOTAL-SIZE specifies the number of | |
3796 | lines of the new window including space reserved for the mode and/or | |
3797 | header line. | |
3798 | ||
3799 | SIDE t (or `right') specifies that the new window shall be located on | |
3800 | the right side of WINDOW. SIDE `left' means the new window shall be | |
3801 | located on the left of WINDOW. In both cases TOTAL-SIZE specifies the | |
3802 | number of columns of the new window including space reserved for fringes | |
3803 | and the scrollbar or a divider column. | |
3804 | ||
3805 | Fourth argument NORMAL-SIZE specifies the normal size of the new window | |
3806 | according to the SIDE argument. | |
3807 | ||
3808 | The new total and normal sizes of all involved windows must have been | |
3809 | set correctly. See the code of `split-window' for how this is done. */) | |
3810 | (Lisp_Object old, Lisp_Object total_size, Lisp_Object side, Lisp_Object normal_size) | |
3811 | { | |
3812 | /* OLD (*o) is the window we have to split. (*p) is either OLD's | |
3813 | parent window or an internal window we have to install as OLD's new | |
3814 | parent. REFERENCE (*r) must denote a live window, or is set to OLD | |
3815 | provided OLD is a leaf window, or to the frame's selected window. | |
3816 | NEW (*n) is the new window created with some parameters taken from | |
3817 | REFERENCE (*r). */ | |
3818 | register Lisp_Object new, frame, reference; | |
3819 | register struct window *o, *p, *n, *r; | |
3820 | struct frame *f; | |
3821 | int horflag | |
3822 | /* HORFLAG is 1 when we split side-by-side, 0 otherwise. */ | |
3823 | = EQ (side, Qt) || EQ (side, Qleft) || EQ (side, Qright); | |
b6f67890 | 3824 | int combination_limit = 0; |
1a13852e MR |
3825 | |
3826 | CHECK_WINDOW (old); | |
3827 | o = XWINDOW (old); | |
3828 | frame = WINDOW_FRAME (o); | |
3829 | f = XFRAME (frame); | |
3830 | ||
3831 | CHECK_NUMBER (total_size); | |
3832 | ||
b6f67890 MR |
3833 | /* Set combination_limit to 1 if we have to make a new parent window. |
3834 | We do that if either `window-combination-limit' is t, or OLD has no | |
3835 | parent, or OLD is ortho-combined. */ | |
3836 | combination_limit = | |
8e17c9ba | 3837 | EQ (Vwindow_combination_limit, Qt) |
d3d50620 | 3838 | || NILP (o->parent) |
1a13852e | 3839 | || NILP (horflag |
d3d50620 DA |
3840 | ? (XWINDOW (o->parent)->hchild) |
3841 | : (XWINDOW (o->parent)->vchild)); | |
1a13852e MR |
3842 | |
3843 | /* We need a live reference window to initialize some parameters. */ | |
3844 | if (WINDOW_LIVE_P (old)) | |
3845 | /* OLD is live, use it as reference window. */ | |
3846 | reference = old; | |
3847 | else | |
3848 | /* Use the frame's selected window as reference window. */ | |
3849 | reference = FRAME_SELECTED_WINDOW (f); | |
3850 | r = XWINDOW (reference); | |
3851 | ||
3852 | /* The following bugs are caught by `split-window'. */ | |
3853 | if (MINI_WINDOW_P (o)) | |
3854 | error ("Attempt to split minibuffer window"); | |
3855 | else if (XINT (total_size) < (horflag ? 2 : 1)) | |
3856 | error ("Size of new window too small (after split)"); | |
a0c2d0ae MR |
3857 | else if (!combination_limit && !NILP (Vwindow_combination_resize)) |
3858 | /* `window-combination-resize' non-nil means try to resize OLD's siblings | |
1a13852e MR |
3859 | proportionally. */ |
3860 | { | |
d3d50620 | 3861 | p = XWINDOW (o->parent); |
1a13852e | 3862 | /* Temporarily pretend we split the parent window. */ |
e8c17b81 PE |
3863 | wset_new_total |
3864 | (p, make_number (XINT (horflag ? p->total_cols : p->total_lines) | |
077288cf | 3865 | - XINT (total_size))); |
d615d6d2 | 3866 | if (!window_resize_check (p, horflag)) |
1a13852e MR |
3867 | error ("Window sizes don't fit"); |
3868 | else | |
3869 | /* Undo the temporary pretension. */ | |
e8c17b81 | 3870 | wset_new_total (p, horflag ? p->total_cols : p->total_lines); |
1a13852e MR |
3871 | } |
3872 | else | |
3873 | { | |
d615d6d2 | 3874 | if (!window_resize_check (o, horflag)) |
1a13852e | 3875 | error ("Resizing old window failed"); |
d3d50620 DA |
3876 | else if (XINT (total_size) + XINT (o->new_total) |
3877 | != XINT (horflag ? o->total_cols : o->total_lines)) | |
1a13852e MR |
3878 | error ("Sum of sizes of old and new window don't fit"); |
3879 | } | |
3880 | ||
3881 | /* This is our point of no return. */ | |
b6f67890 | 3882 | if (combination_limit) |
1a13852e MR |
3883 | { |
3884 | /* Save the old value of o->normal_cols/lines. It gets corrupted | |
3885 | by make_parent_window and we need it below for assigning it to | |
3886 | p->new_normal. */ | |
3a45383a | 3887 | Lisp_Object new_normal |
d3d50620 | 3888 | = horflag ? o->normal_cols : o->normal_lines; |
1a13852e MR |
3889 | |
3890 | make_parent_window (old, horflag); | |
d3d50620 | 3891 | p = XWINDOW (o->parent); |
8e17c9ba MR |
3892 | /* Store t in the new parent's combination_limit slot to avoid |
3893 | that its children get merged into another window. */ | |
3894 | wset_combination_limit (p, Qt); | |
1a13852e | 3895 | /* These get applied below. */ |
e8c17b81 PE |
3896 | wset_new_total (p, horflag ? o->total_cols : o->total_lines); |
3897 | wset_new_normal (p, new_normal); | |
1a13852e MR |
3898 | } |
3899 | else | |
d3d50620 | 3900 | p = XWINDOW (o->parent); |
1a13852e MR |
3901 | |
3902 | windows_or_buffers_changed++; | |
3903 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3904 | new = make_window (); | |
3905 | n = XWINDOW (new); | |
e8c17b81 PE |
3906 | wset_frame (n, frame); |
3907 | wset_parent (n, o->parent); | |
3908 | wset_vchild (n, Qnil); | |
3909 | wset_hchild (n, Qnil); | |
1a13852e MR |
3910 | |
3911 | if (EQ (side, Qabove) || EQ (side, Qleft)) | |
3912 | { | |
e8c17b81 | 3913 | wset_prev (n, o->prev); |
d3d50620 | 3914 | if (NILP (n->prev)) |
1a13852e | 3915 | if (horflag) |
e8c17b81 | 3916 | wset_hchild (p, new); |
1a13852e | 3917 | else |
e8c17b81 | 3918 | wset_vchild (p, new); |
1a13852e | 3919 | else |
e8c17b81 PE |
3920 | wset_next (XWINDOW (n->prev), new); |
3921 | wset_next (n, old); | |
3922 | wset_prev (o, new); | |
1a13852e MR |
3923 | } |
3924 | else | |
3925 | { | |
e8c17b81 | 3926 | wset_next (n, o->next); |
d3d50620 | 3927 | if (!NILP (n->next)) |
e8c17b81 PE |
3928 | wset_prev (XWINDOW (n->next), new); |
3929 | wset_prev (n, old); | |
3930 | wset_next (o, new); | |
1a13852e MR |
3931 | } |
3932 | ||
e8c17b81 PE |
3933 | wset_buffer (n, Qt); |
3934 | wset_window_end_valid (n, Qnil); | |
1a13852e MR |
3935 | memset (&n->last_cursor, 0, sizeof n->last_cursor); |
3936 | ||
3937 | /* Get special geometry settings from reference window. */ | |
e8c17b81 PE |
3938 | wset_left_margin_cols (n, r->left_margin_cols); |
3939 | wset_right_margin_cols (n, r->right_margin_cols); | |
3940 | wset_left_fringe_width (n, r->left_fringe_width); | |
3941 | wset_right_fringe_width (n, r->right_fringe_width); | |
1a13852e | 3942 | n->fringes_outside_margins = r->fringes_outside_margins; |
e8c17b81 PE |
3943 | wset_scroll_bar_width (n, r->scroll_bar_width); |
3944 | wset_vertical_scroll_bar_type (n, r->vertical_scroll_bar_type); | |
1a13852e | 3945 | |
1a13852e MR |
3946 | /* Directly assign orthogonal coordinates and sizes. */ |
3947 | if (horflag) | |
3948 | { | |
e8c17b81 PE |
3949 | wset_top_line (n, o->top_line); |
3950 | wset_total_lines (n, o->total_lines); | |
1a13852e MR |
3951 | } |
3952 | else | |
3953 | { | |
e8c17b81 PE |
3954 | wset_left_col (n, o->left_col); |
3955 | wset_total_cols (n, o->total_cols); | |
1a13852e MR |
3956 | } |
3957 | ||
d615d6d2 | 3958 | /* Iso-coordinates and sizes are assigned by window_resize_apply, |
1a13852e | 3959 | get them ready here. */ |
e8c17b81 PE |
3960 | wset_new_total (n, total_size); |
3961 | wset_new_normal (n, normal_size); | |
1a13852e | 3962 | |
4d7e6e51 | 3963 | block_input (); |
d615d6d2 | 3964 | window_resize_apply (p, horflag); |
1a13852e MR |
3965 | adjust_glyphs (f); |
3966 | /* Set buffer of NEW to buffer of reference window. Don't run | |
3967 | any hooks. */ | |
d3d50620 | 3968 | set_window_buffer (new, r->buffer, 0, 1); |
4d7e6e51 | 3969 | unblock_input (); |
1a13852e MR |
3970 | |
3971 | /* Maybe we should run the scroll functions in Elisp (which already | |
3972 | runs the configuration change hook). */ | |
3973 | if (! NILP (Vwindow_scroll_functions)) | |
3974 | run_hook_with_args_2 (Qwindow_scroll_functions, new, | |
d3d50620 | 3975 | Fmarker_position (n->start)); |
1a13852e MR |
3976 | /* Return NEW. */ |
3977 | return new; | |
3978 | } | |
3979 | ||
3980 | ||
3981 | DEFUN ("delete-window-internal", Fdelete_window_internal, Sdelete_window_internal, 1, 1, 0, | |
3982 | doc: /* Remove WINDOW from its frame. | |
87e68db4 JB |
3983 | WINDOW defaults to the selected window. Return nil. |
3984 | Signal an error when WINDOW is the only window on its frame. */) | |
1a13852e MR |
3985 | (register Lisp_Object window) |
3986 | { | |
3987 | register Lisp_Object parent, sibling, frame, root; | |
3988 | struct window *w, *p, *s, *r; | |
3989 | struct frame *f; | |
3990 | int horflag; | |
3991 | int before_sibling = 0; | |
3992 | ||
3993 | w = decode_any_window (window); | |
3994 | XSETWINDOW (window, w); | |
d3d50620 DA |
3995 | if (NILP (w->buffer) |
3996 | && NILP (w->hchild) && NILP (w->vchild)) | |
1a13852e MR |
3997 | /* It's a no-op to delete an already deleted window. */ |
3998 | return Qnil; | |
3999 | ||
d3d50620 | 4000 | parent = w->parent; |
1a13852e MR |
4001 | if (NILP (parent)) |
4002 | /* Never delete a minibuffer or frame root window. */ | |
4003 | error ("Attempt to delete minibuffer or sole ordinary window"); | |
d3d50620 | 4004 | else if (NILP (w->prev) && NILP (w->next)) |
1a13852e MR |
4005 | /* Rather bow out here, this case should be handled on the Elisp |
4006 | level. */ | |
4007 | error ("Attempt to delete sole window of parent"); | |
4008 | ||
4009 | p = XWINDOW (parent); | |
d3d50620 | 4010 | horflag = NILP (p->vchild); |
1a13852e MR |
4011 | |
4012 | frame = WINDOW_FRAME (w); | |
4013 | f = XFRAME (frame); | |
4014 | ||
4015 | root = FRAME_ROOT_WINDOW (f); | |
4016 | r = XWINDOW (root); | |
4017 | ||
4018 | /* Unlink WINDOW from window tree. */ | |
d3d50620 | 4019 | if (NILP (w->prev)) |
1a13852e MR |
4020 | /* Get SIBLING below (on the right of) WINDOW. */ |
4021 | { | |
4022 | /* before_sibling 1 means WINDOW is the first child of its | |
4023 | parent and thus before the sibling. */ | |
4024 | before_sibling = 1; | |
d3d50620 | 4025 | sibling = w->next; |
1a13852e | 4026 | s = XWINDOW (sibling); |
e8c17b81 | 4027 | wset_prev (s, Qnil); |
1a13852e | 4028 | if (horflag) |
e8c17b81 | 4029 | wset_hchild (p, sibling); |
1a13852e | 4030 | else |
e8c17b81 | 4031 | wset_vchild (p, sibling); |
1a13852e MR |
4032 | } |
4033 | else | |
4034 | /* Get SIBLING above (on the left of) WINDOW. */ | |
4035 | { | |
d3d50620 | 4036 | sibling = w->prev; |
1a13852e | 4037 | s = XWINDOW (sibling); |
e8c17b81 | 4038 | wset_next (s, w->next); |
d3d50620 | 4039 | if (!NILP (s->next)) |
e8c17b81 | 4040 | wset_prev (XWINDOW (s->next), sibling); |
7ab12479 JB |
4041 | } |
4042 | ||
d615d6d2 | 4043 | if (window_resize_check (r, horflag) |
d3d50620 DA |
4044 | && EQ (r->new_total, |
4045 | (horflag ? r->total_cols : r->total_lines))) | |
562dd5e9 MR |
4046 | /* We can delete WINDOW now. */ |
4047 | { | |
95986d52 | 4048 | |
562dd5e9 | 4049 | /* Block input. */ |
4d7e6e51 | 4050 | block_input (); |
d615d6d2 | 4051 | window_resize_apply (p, horflag); |
0d384044 | 4052 | |
95986d52 CY |
4053 | /* If this window is referred to by the dpyinfo's mouse |
4054 | highlight, invalidate that slot to be safe (Bug#9904). */ | |
4c5501e9 EZ |
4055 | if (!FRAME_INITIAL_P (f)) |
4056 | { | |
4057 | Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f); | |
4058 | ||
4059 | if (EQ (hlinfo->mouse_face_window, window)) | |
4060 | hlinfo->mouse_face_window = Qnil; | |
4061 | } | |
95986d52 | 4062 | |
562dd5e9 MR |
4063 | windows_or_buffers_changed++; |
4064 | Vwindow_list = Qnil; | |
4065 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
0d384044 | 4066 | |
e8c17b81 | 4067 | wset_next (w, Qnil); /* Don't delete w->next too. */ |
562dd5e9 | 4068 | free_window_matrices (w); |
bd99e242 | 4069 | |
d3d50620 | 4070 | if (!NILP (w->vchild)) |
0d384044 | 4071 | { |
d3d50620 | 4072 | delete_all_child_windows (w->vchild); |
e8c17b81 | 4073 | wset_vchild (w, Qnil); |
0d384044 | 4074 | } |
d3d50620 | 4075 | else if (!NILP (w->hchild)) |
bd99e242 | 4076 | { |
d3d50620 | 4077 | delete_all_child_windows (w->hchild); |
e8c17b81 | 4078 | wset_hchild (w, Qnil); |
bd99e242 | 4079 | } |
d3d50620 | 4080 | else if (!NILP (w->buffer)) |
bd99e242 | 4081 | { |
562dd5e9 | 4082 | unshow_buffer (w); |
d3d50620 DA |
4083 | unchain_marker (XMARKER (w->pointm)); |
4084 | unchain_marker (XMARKER (w->start)); | |
e8c17b81 | 4085 | wset_buffer (w, Qnil); |
bd99e242 RS |
4086 | } |
4087 | ||
d3d50620 | 4088 | if (NILP (s->prev) && NILP (s->next)) |
562dd5e9 MR |
4089 | /* A matrjoshka where SIBLING has become the only child of |
4090 | PARENT. */ | |
c32de52a | 4091 | { |
562dd5e9 MR |
4092 | /* Put SIBLING into PARENT's place. */ |
4093 | replace_window (parent, sibling, 0); | |
4094 | /* Have SIBLING inherit the following three slot values from | |
b6f67890 | 4095 | PARENT (the combination_limit slot is not inherited). */ |
e8c17b81 PE |
4096 | wset_normal_cols (s, p->normal_cols); |
4097 | wset_normal_lines (s, p->normal_lines); | |
562dd5e9 | 4098 | /* Mark PARENT as deleted. */ |
e8c17b81 PE |
4099 | wset_vchild (p, Qnil); |
4100 | wset_hchild (p, Qnil); | |
562dd5e9 MR |
4101 | /* Try to merge SIBLING into its new parent. */ |
4102 | recombine_windows (sibling); | |
c32de52a RS |
4103 | } |
4104 | ||
562dd5e9 MR |
4105 | adjust_glyphs (f); |
4106 | ||
4107 | if (!WINDOW_LIVE_P (FRAME_SELECTED_WINDOW (f))) | |
4108 | /* We deleted the frame's selected window. */ | |
0d384044 | 4109 | { |
562dd5e9 MR |
4110 | /* Use the frame's first window as fallback ... */ |
4111 | Lisp_Object new_selected_window = Fframe_first_window (frame); | |
4112 | /* ... but preferably use its most recently used window. */ | |
4113 | Lisp_Object mru_window; | |
0d384044 | 4114 | |
562dd5e9 MR |
4115 | /* `get-mru-window' might fail for some reason so play it safe |
4116 | - promote the first window _without recording it_ first. */ | |
4117 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
4118 | Fselect_window (new_selected_window, Qt); | |
4119 | else | |
f00af5b1 | 4120 | fset_selected_window (f, new_selected_window); |
0d384044 | 4121 | |
4d7e6e51 | 4122 | unblock_input (); |
0d384044 | 4123 | |
562dd5e9 MR |
4124 | /* Now look whether `get-mru-window' gets us something. */ |
4125 | mru_window = call1 (Qget_mru_window, frame); | |
4126 | if (WINDOW_LIVE_P (mru_window) | |
d3d50620 | 4127 | && EQ (XWINDOW (mru_window)->frame, frame)) |
562dd5e9 | 4128 | new_selected_window = mru_window; |
bd99e242 | 4129 | |
562dd5e9 MR |
4130 | /* If all ended up well, we now promote the mru window. */ |
4131 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
4132 | Fselect_window (new_selected_window, Qnil); | |
4133 | else | |
f00af5b1 | 4134 | fset_selected_window (f, new_selected_window); |
0d384044 RS |
4135 | } |
4136 | else | |
4d7e6e51 | 4137 | unblock_input (); |
0d384044 | 4138 | |
562dd5e9 MR |
4139 | /* Must be run by the caller: |
4140 | run_window_configuration_change_hook (f); */ | |
0d384044 | 4141 | } |
562dd5e9 MR |
4142 | else |
4143 | /* We failed: Relink WINDOW into window tree. */ | |
0d384044 | 4144 | { |
562dd5e9 MR |
4145 | if (before_sibling) |
4146 | { | |
e8c17b81 | 4147 | wset_prev (s, window); |
562dd5e9 | 4148 | if (horflag) |
e8c17b81 | 4149 | wset_hchild (p, window); |
562dd5e9 | 4150 | else |
e8c17b81 | 4151 | wset_vchild (p, window); |
562dd5e9 MR |
4152 | } |
4153 | else | |
4154 | { | |
e8c17b81 | 4155 | wset_next (s, window); |
d3d50620 | 4156 | if (!NILP (w->next)) |
e8c17b81 | 4157 | wset_prev (XWINDOW (w->next), window); |
562dd5e9 MR |
4158 | } |
4159 | error ("Deletion failed"); | |
0d384044 RS |
4160 | } |
4161 | ||
0d384044 RS |
4162 | return Qnil; |
4163 | } | |
f984d4fc GM |
4164 | \f |
4165 | /*********************************************************************** | |
4166 | Resizing Mini-Windows | |
4167 | ***********************************************************************/ | |
4168 | ||
562dd5e9 MR |
4169 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we |
4170 | can. */ | |
4171 | void | |
4172 | grow_mini_window (struct window *w, int delta) | |
f984d4fc | 4173 | { |
d3d50620 | 4174 | struct frame *f = XFRAME (w->frame); |
562dd5e9 MR |
4175 | struct window *r; |
4176 | Lisp_Object root, value; | |
f984d4fc | 4177 | |
a54e2c05 DA |
4178 | eassert (MINI_WINDOW_P (w)); |
4179 | eassert (delta >= 0); | |
f984d4fc | 4180 | |
562dd5e9 MR |
4181 | root = FRAME_ROOT_WINDOW (f); |
4182 | r = XWINDOW (root); | |
5386012d MR |
4183 | value = call2 (Qwindow_resize_root_window_vertically, |
4184 | root, make_number (- delta)); | |
d615d6d2 | 4185 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4186 | { |
4d7e6e51 | 4187 | block_input (); |
d615d6d2 | 4188 | window_resize_apply (r, 0); |
f984d4fc | 4189 | |
562dd5e9 | 4190 | /* Grow the mini-window. */ |
e8c17b81 PE |
4191 | wset_top_line |
4192 | (w, make_number (XFASTINT (r->top_line) + XFASTINT (r->total_lines))); | |
4193 | wset_total_lines | |
4194 | (w, make_number (XFASTINT (w->total_lines) - XINT (value))); | |
80b00b08 DA |
4195 | w->last_modified = 0; |
4196 | w->last_overlay_modified = 0; | |
f984d4fc | 4197 | |
dca778d5 | 4198 | windows_or_buffers_changed++; |
562dd5e9 | 4199 | adjust_glyphs (f); |
4d7e6e51 | 4200 | unblock_input (); |
f984d4fc GM |
4201 | } |
4202 | } | |
4203 | ||
4204 | ||
562dd5e9 MR |
4205 | /* Shrink mini-window W. */ |
4206 | void | |
4207 | shrink_mini_window (struct window *w) | |
f984d4fc | 4208 | { |
d3d50620 | 4209 | struct frame *f = XFRAME (w->frame); |
562dd5e9 MR |
4210 | struct window *r; |
4211 | Lisp_Object root, value; | |
4212 | EMACS_INT size; | |
43b4a21f | 4213 | |
a54e2c05 | 4214 | eassert (MINI_WINDOW_P (w)); |
177c0ea7 | 4215 | |
d3d50620 | 4216 | size = XINT (w->total_lines); |
562dd5e9 MR |
4217 | if (size > 1) |
4218 | { | |
4219 | root = FRAME_ROOT_WINDOW (f); | |
4220 | r = XWINDOW (root); | |
5386012d | 4221 | value = call2 (Qwindow_resize_root_window_vertically, |
562dd5e9 | 4222 | root, make_number (size - 1)); |
d615d6d2 | 4223 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4224 | { |
4d7e6e51 | 4225 | block_input (); |
d615d6d2 | 4226 | window_resize_apply (r, 0); |
43b4a21f | 4227 | |
562dd5e9 | 4228 | /* Shrink the mini-window. */ |
e8c17b81 PE |
4229 | wset_top_line (w, make_number (XFASTINT (r->top_line) |
4230 | + XFASTINT (r->total_lines))); | |
4231 | wset_total_lines (w, make_number (1)); | |
43b4a21f | 4232 | |
80b00b08 DA |
4233 | w->last_modified = 0; |
4234 | w->last_overlay_modified = 0; | |
43b4a21f | 4235 | |
dca778d5 | 4236 | windows_or_buffers_changed++; |
562dd5e9 | 4237 | adjust_glyphs (f); |
4d7e6e51 | 4238 | unblock_input (); |
f984d4fc | 4239 | } |
562dd5e9 MR |
4240 | /* If the above failed for whatever strange reason we must make a |
4241 | one window frame here. The same routine will be needed when | |
4242 | shrinking the frame (and probably when making the initial | |
4243 | *scratch* window). For the moment leave things as they are. */ | |
f984d4fc GM |
4244 | } |
4245 | } | |
4246 | ||
562dd5e9 MR |
4247 | DEFUN ("resize-mini-window-internal", Fresize_mini_window_internal, Sresize_mini_window_internal, 1, 1, 0, |
4248 | doc: /* Resize minibuffer window WINDOW. */) | |
4249 | (Lisp_Object window) | |
f984d4fc | 4250 | { |
562dd5e9 MR |
4251 | struct window *w = XWINDOW (window); |
4252 | struct window *r; | |
4253 | struct frame *f; | |
4254 | int height; | |
177c0ea7 | 4255 | |
562dd5e9 | 4256 | CHECK_WINDOW (window); |
d3d50620 | 4257 | f = XFRAME (w->frame); |
177c0ea7 | 4258 | |
d3d50620 | 4259 | if (!EQ (FRAME_MINIBUF_WINDOW (XFRAME (w->frame)), window)) |
562dd5e9 MR |
4260 | error ("Not a valid minibuffer window"); |
4261 | else if (FRAME_MINIBUF_ONLY_P (f)) | |
4262 | error ("Cannot resize a minibuffer-only frame"); | |
177c0ea7 | 4263 | |
562dd5e9 | 4264 | r = XWINDOW (FRAME_ROOT_WINDOW (f)); |
d3d50620 | 4265 | height = XINT (r->total_lines) + XINT (w->total_lines); |
d615d6d2 | 4266 | if (window_resize_check (r, 0) |
d3d50620 DA |
4267 | && XINT (w->new_total) > 0 |
4268 | && height == XINT (r->new_total) + XINT (w->new_total)) | |
f984d4fc | 4269 | { |
4d7e6e51 | 4270 | block_input (); |
d615d6d2 | 4271 | window_resize_apply (r, 0); |
f984d4fc | 4272 | |
e8c17b81 PE |
4273 | wset_total_lines (w, w->new_total); |
4274 | wset_top_line (w, make_number (XINT (r->top_line) | |
4275 | + XINT (r->total_lines))); | |
177c0ea7 | 4276 | |
562dd5e9 MR |
4277 | windows_or_buffers_changed++; |
4278 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
f984d4fc | 4279 | adjust_glyphs (f); |
4d7e6e51 | 4280 | unblock_input (); |
f984d4fc | 4281 | |
562dd5e9 MR |
4282 | run_window_configuration_change_hook (f); |
4283 | return Qt; | |
86c8e823 | 4284 | } |
562dd5e9 | 4285 | else error ("Failed to resize minibuffer window"); |
f984d4fc | 4286 | } |
562dd5e9 | 4287 | \f |
5500c422 GM |
4288 | /* Mark window cursors off for all windows in the window tree rooted |
4289 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4290 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4291 | the frame are cleared. */ | |
4292 | ||
4293 | void | |
971de7fb | 4294 | mark_window_cursors_off (struct window *w) |
5500c422 GM |
4295 | { |
4296 | while (w) | |
4297 | { | |
d3d50620 DA |
4298 | if (!NILP (w->hchild)) |
4299 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4300 | else if (!NILP (w->vchild)) | |
4301 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
5500c422 GM |
4302 | else |
4303 | w->phys_cursor_on_p = 0; | |
4304 | ||
d3d50620 | 4305 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
5500c422 GM |
4306 | } |
4307 | } | |
4308 | ||
4309 | ||
e9c195b1 | 4310 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4311 | |
4312 | int | |
971de7fb | 4313 | window_internal_height (struct window *w) |
7ab12479 | 4314 | { |
d3d50620 | 4315 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4316 | |
e9c195b1 GM |
4317 | if (!MINI_WINDOW_P (w)) |
4318 | { | |
d3d50620 DA |
4319 | if (!NILP (w->parent) |
4320 | || !NILP (w->vchild) | |
4321 | || !NILP (w->hchild) | |
4322 | || !NILP (w->next) | |
4323 | || !NILP (w->prev) | |
e9c195b1 GM |
4324 | || WINDOW_WANTS_MODELINE_P (w)) |
4325 | --ht; | |
7ab12479 | 4326 | |
e9c195b1 GM |
4327 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4328 | --ht; | |
4329 | } | |
7ab12479 JB |
4330 | |
4331 | return ht; | |
4332 | } | |
5500c422 GM |
4333 | \f |
4334 | /************************************************************************ | |
4335 | Window Scrolling | |
4336 | ***********************************************************************/ | |
535e0b8e | 4337 | |
5500c422 | 4338 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4339 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4340 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4341 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4342 | means don't signal an error if we try to move over BEGV or ZV, | |
4343 | respectively. */ | |
7ab12479 | 4344 | |
101d1605 | 4345 | static void |
d311d28c | 4346 | window_scroll (Lisp_Object window, EMACS_INT n, int whole, int noerror) |
5500c422 | 4347 | { |
cba59f77 | 4348 | immediate_quit = 1; |
d311d28c | 4349 | n = clip_to_bounds (INT_MIN, n, INT_MAX); |
cba59f77 | 4350 | |
5500c422 GM |
4351 | /* If we must, use the pixel-based version which is much slower than |
4352 | the line-based one but can handle varying line heights. */ | |
d3d50620 | 4353 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) |
5500c422 GM |
4354 | window_scroll_pixel_based (window, n, whole, noerror); |
4355 | else | |
4356 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4357 | |
4358 | immediate_quit = 0; | |
5500c422 GM |
4359 | } |
4360 | ||
4361 | ||
4362 | /* Implementation of window_scroll that works based on pixel line | |
4363 | heights. See the comment of window_scroll for parameter | |
4364 | descriptions. */ | |
4365 | ||
4366 | static void | |
971de7fb | 4367 | window_scroll_pixel_based (Lisp_Object window, int n, int whole, int noerror) |
5500c422 GM |
4368 | { |
4369 | struct it it; | |
4370 | struct window *w = XWINDOW (window); | |
4371 | struct text_pos start; | |
5500c422 | 4372 | int this_scroll_margin; |
9d14503e | 4373 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5cdb3cf3 | 4374 | int vscrolled = 0; |
5a857365 | 4375 | int x, y, rtop, rbot, rowh, vpos; |
57b3e30b | 4376 | void *itdata = NULL; |
5500c422 | 4377 | |
d3d50620 | 4378 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
f0ee99a0 EZ |
4379 | /* Scrolling a minibuffer window via scroll bar when the echo area |
4380 | shows long text sometimes resets the minibuffer contents behind | |
4381 | our backs. */ | |
4382 | if (CHARPOS (start) > ZV) | |
4383 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
177c0ea7 | 4384 | |
5500c422 | 4385 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4386 | the screen. Allow PT to be partially visible, otherwise |
4387 | something like (scroll-down 1) with PT in the line before | |
4388 | the partially visible one would recenter. */ | |
5a857365 KS |
4389 | |
4390 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 | 4391 | { |
57b3e30b | 4392 | itdata = bidi_shelve_cache (); |
5500c422 GM |
4393 | /* Move backward half the height of the window. Performance note: |
4394 | vmotion used here is about 10% faster, but would give wrong | |
4395 | results for variable height lines. */ | |
4396 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4397 | it.current_y = it.last_visible_y; | |
f204989e | 4398 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4399 | |
5500c422 GM |
4400 | /* The function move_iterator_vertically may move over more than |
4401 | the specified y-distance. If it->w is small, e.g. a | |
4402 | mini-buffer window, we may end up in front of the window's | |
4403 | display area. This is the case when Start displaying at the | |
4404 | start of the line containing PT in this case. */ | |
4405 | if (it.current_y <= 0) | |
4406 | { | |
4407 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4408 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4409 | it.current_y = 0; |
4410 | } | |
4411 | ||
4412 | start = it.current.pos; | |
35928349 | 4413 | bidi_unshelve_cache (itdata, 0); |
5500c422 | 4414 | } |
e56263e5 KS |
4415 | else if (auto_window_vscroll_p) |
4416 | { | |
5a857365 | 4417 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
4418 | { |
4419 | int px; | |
4420 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4421 | if (whole) | |
e856c216 KS |
4422 | dy = max ((window_box_height (w) |
4423 | - next_screen_context_lines * dy), | |
4424 | dy); | |
e56263e5 KS |
4425 | dy *= n; |
4426 | ||
5a857365 | 4427 | if (n < 0) |
e56263e5 | 4428 | { |
5a857365 KS |
4429 | /* Only vscroll backwards if already vscrolled forwards. */ |
4430 | if (w->vscroll < 0 && rtop > 0) | |
4431 | { | |
4432 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
4433 | Fset_window_vscroll (window, make_number (px), Qt); | |
4434 | return; | |
4435 | } | |
e56263e5 | 4436 | } |
5a857365 | 4437 | if (n > 0) |
e56263e5 | 4438 | { |
5a857365 KS |
4439 | /* Do vscroll if already vscrolled or only display line. */ |
4440 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
4441 | { | |
4442 | px = max (0, -w->vscroll + min (rbot, dy)); | |
4443 | Fset_window_vscroll (window, make_number (px), Qt); | |
4444 | return; | |
4445 | } | |
4446 | ||
4447 | /* Maybe modify window start instead of scrolling. */ | |
4448 | if (rbot > 0 || w->vscroll < 0) | |
4449 | { | |
d311d28c | 4450 | ptrdiff_t spos; |
5a857365 KS |
4451 | |
4452 | Fset_window_vscroll (window, make_number (0), Qt); | |
4453 | /* If there are other text lines above the current row, | |
4454 | move window start to current row. Else to next row. */ | |
4455 | if (rbot > 0) | |
4456 | spos = XINT (Fline_beginning_position (Qnil)); | |
4457 | else | |
4458 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
d3d50620 DA |
4459 | set_marker_restricted (w->start, make_number (spos), |
4460 | w->buffer); | |
c98ff5dd DA |
4461 | w->start_at_line_beg = 1; |
4462 | w->update_mode_line = 1; | |
80b00b08 DA |
4463 | w->last_modified = 0; |
4464 | w->last_overlay_modified = 0; | |
5a857365 KS |
4465 | /* Set force_start so that redisplay_window will run the |
4466 | window-scroll-functions. */ | |
c98ff5dd | 4467 | w->force_start = 1; |
5a857365 KS |
4468 | return; |
4469 | } | |
e56263e5 KS |
4470 | } |
4471 | } | |
5a857365 | 4472 | /* Cancel previous vscroll. */ |
e56263e5 KS |
4473 | Fset_window_vscroll (window, make_number (0), Qt); |
4474 | } | |
5500c422 | 4475 | |
57b3e30b | 4476 | itdata = bidi_shelve_cache (); |
d0c38d63 | 4477 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
4478 | point in the same window line as it is now, so get that line. */ |
4479 | if (!NILP (Vscroll_preserve_screen_position)) | |
4480 | { | |
c525d842 | 4481 | /* We preserve the goal pixel coordinate across consecutive |
a4b000fb JL |
4482 | calls to scroll-up, scroll-down and other commands that |
4483 | have the `scroll-command' property. This avoids the | |
c525d842 CY |
4484 | possibility of point becoming "stuck" on a tall line when |
4485 | scrolling by one line. */ | |
66fe93d1 | 4486 | if (window_scroll_pixel_based_preserve_y < 0 |
1344aad4 TT |
4487 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4488 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c525d842 CY |
4489 | { |
4490 | start_display (&it, w, start); | |
4491 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 4492 | window_scroll_pixel_based_preserve_y = it.current_y; |
c876b227 | 4493 | window_scroll_pixel_based_preserve_x = it.current_x; |
c525d842 | 4494 | } |
5500c422 GM |
4495 | } |
4496 | else | |
c876b227 SM |
4497 | window_scroll_pixel_based_preserve_y |
4498 | = window_scroll_pixel_based_preserve_x = -1; | |
5500c422 GM |
4499 | |
4500 | /* Move iterator it from start the specified distance forward or | |
4501 | backward. The result is the new window start. */ | |
4502 | start_display (&it, w, start); | |
4503 | if (whole) | |
4504 | { | |
d311d28c | 4505 | ptrdiff_t start_pos = IT_CHARPOS (it); |
e856c216 KS |
4506 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); |
4507 | dy = max ((window_box_height (w) | |
4508 | - next_screen_context_lines * dy), | |
4509 | dy) * n; | |
d72340d4 GM |
4510 | |
4511 | /* Note that move_it_vertically always moves the iterator to the | |
4512 | start of a line. So, if the last line doesn't have a newline, | |
4513 | we would end up at the start of the line ending at ZV. */ | |
4514 | if (dy <= 0) | |
e856c216 KS |
4515 | { |
4516 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 4517 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
4518 | looking at an image that is taller that the window height. */ |
4519 | while (start_pos == IT_CHARPOS (it) | |
4520 | && start_pos > BEGV) | |
e4cc2dfc | 4521 | move_it_by_lines (&it, -1); |
e856c216 | 4522 | } |
d72340d4 | 4523 | else if (dy > 0) |
bed83ee4 | 4524 | { |
bed83ee4 KS |
4525 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
4526 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 4527 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
4528 | looking at an image that is taller that the window height. */ |
4529 | while (start_pos == IT_CHARPOS (it) | |
4530 | && start_pos < ZV) | |
e4cc2dfc | 4531 | move_it_by_lines (&it, 1); |
bed83ee4 | 4532 | } |
5500c422 GM |
4533 | } |
4534 | else | |
e4cc2dfc | 4535 | move_it_by_lines (&it, n); |
5500c422 | 4536 | |
96ae58c8 RS |
4537 | /* We failed if we find ZV is already on the screen (scrolling up, |
4538 | means there's nothing past the end), or if we can't start any | |
4539 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 4540 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 4541 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 4542 | { |
5cdb3cf3 MB |
4543 | if (IT_CHARPOS (it) == ZV) |
4544 | { | |
07ce8b53 RS |
4545 | if (it.current_y < it.last_visible_y |
4546 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 4547 | > it.last_visible_y)) |
a74eca50 GM |
4548 | { |
4549 | /* The last line was only partially visible, make it fully | |
4550 | visible. */ | |
4551 | w->vscroll = (it.last_visible_y | |
4552 | - it.current_y + it.max_ascent + it.max_descent); | |
4553 | adjust_glyphs (it.f); | |
4554 | } | |
5cdb3cf3 | 4555 | else |
57b3e30b | 4556 | { |
35928349 | 4557 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
4558 | if (noerror) |
4559 | return; | |
4560 | else if (n < 0) /* could happen with empty buffers */ | |
4561 | xsignal0 (Qbeginning_of_buffer); | |
4562 | else | |
4563 | xsignal0 (Qend_of_buffer); | |
4564 | } | |
5cdb3cf3 | 4565 | } |
5500c422 | 4566 | else |
5cdb3cf3 MB |
4567 | { |
4568 | if (w->vscroll != 0) | |
4569 | /* The first line was only partially visible, make it fully | |
4570 | visible. */ | |
4571 | w->vscroll = 0; | |
5cdb3cf3 | 4572 | else |
57b3e30b | 4573 | { |
35928349 | 4574 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
4575 | if (noerror) |
4576 | return; | |
4577 | else | |
4578 | xsignal0 (Qbeginning_of_buffer); | |
4579 | } | |
5cdb3cf3 MB |
4580 | } |
4581 | ||
4582 | /* If control gets here, then we vscrolled. */ | |
4583 | ||
d3d50620 | 4584 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
5cdb3cf3 MB |
4585 | |
4586 | /* Don't try to change the window start below. */ | |
4587 | vscrolled = 1; | |
5500c422 GM |
4588 | } |
4589 | ||
5cdb3cf3 MB |
4590 | if (! vscrolled) |
4591 | { | |
d311d28c PE |
4592 | ptrdiff_t pos = IT_CHARPOS (it); |
4593 | ptrdiff_t bytepos; | |
e68def1e AS |
4594 | |
4595 | /* If in the middle of a multi-glyph character move forward to | |
4596 | the next character. */ | |
4597 | if (in_display_vector_p (&it)) | |
4598 | { | |
4599 | ++pos; | |
4600 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
4601 | } | |
4602 | ||
5cdb3cf3 | 4603 | /* Set the window start, and set up the window for redisplay. */ |
d3d50620 DA |
4604 | set_marker_restricted (w->start, make_number (pos), |
4605 | w->buffer); | |
4606 | bytepos = XMARKER (w->start)->bytepos; | |
c98ff5dd DA |
4607 | w->start_at_line_beg = (pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n'); |
4608 | w->update_mode_line = 1; | |
80b00b08 DA |
4609 | w->last_modified = 0; |
4610 | w->last_overlay_modified = 0; | |
5cdb3cf3 MB |
4611 | /* Set force_start so that redisplay_window will run the |
4612 | window-scroll-functions. */ | |
c98ff5dd | 4613 | w->force_start = 1; |
5cdb3cf3 | 4614 | } |
177c0ea7 | 4615 | |
dc297565 RS |
4616 | /* The rest of this function uses current_y in a nonstandard way, |
4617 | not including the height of the header line if any. */ | |
5500c422 | 4618 | it.current_y = it.vpos = 0; |
177c0ea7 | 4619 | |
940f53e5 RS |
4620 | /* Move PT out of scroll margins. |
4621 | This code wants current_y to be zero at the window start position | |
4622 | even if there is a header line. */ | |
4623 | this_scroll_margin = max (0, scroll_margin); | |
3a45383a | 4624 | this_scroll_margin |
d3d50620 | 4625 | = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); |
940f53e5 RS |
4626 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); |
4627 | ||
4628 | if (n > 0) | |
5500c422 | 4629 | { |
940f53e5 RS |
4630 | /* We moved the window start towards ZV, so PT may be now |
4631 | in the scroll margin at the top. */ | |
4632 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
4633 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
4634 | && (NILP (Vscroll_preserve_screen_position) | |
4635 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4636 | /* We found PT at a legitimate height. Leave it alone. */ |
4637 | ; | |
66fe93d1 | 4638 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4639 | { |
fa3c3426 RS |
4640 | /* If we have a header line, take account of it. |
4641 | This is necessary because we set it.current_y to 0, above. */ | |
c876b227 SM |
4642 | move_it_to (&it, -1, |
4643 | window_scroll_pixel_based_preserve_x, | |
66fe93d1 LT |
4644 | window_scroll_pixel_based_preserve_y |
4645 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c876b227 | 4646 | -1, MOVE_TO_Y | MOVE_TO_X); |
940f53e5 RS |
4647 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4648 | } | |
4649 | else | |
5500c422 | 4650 | { |
5500c422 | 4651 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
4652 | { |
4653 | int prev = it.current_y; | |
e4cc2dfc | 4654 | move_it_by_lines (&it, 1); |
e9b2c961 RS |
4655 | if (prev == it.current_y) |
4656 | break; | |
4657 | } | |
5500c422 GM |
4658 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4659 | } | |
940f53e5 RS |
4660 | } |
4661 | else if (n < 0) | |
4662 | { | |
d311d28c | 4663 | ptrdiff_t charpos, bytepos; |
aed328bf | 4664 | int partial_p; |
940f53e5 | 4665 | |
66fe93d1 LT |
4666 | /* Save our position, for the |
4667 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
4668 | charpos = IT_CHARPOS (it); |
4669 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 4670 | |
940f53e5 RS |
4671 | /* We moved the window start towards BEGV, so PT may be now |
4672 | in the scroll margin at the bottom. */ | |
4673 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
4674 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
4675 | - this_scroll_margin - 1), | |
4676 | -1, | |
940f53e5 RS |
4677 | MOVE_TO_POS | MOVE_TO_Y); |
4678 | ||
aed328bf KS |
4679 | /* Save our position, in case it's correct. */ |
4680 | charpos = IT_CHARPOS (it); | |
4681 | bytepos = IT_BYTEPOS (it); | |
4682 | ||
4683 | /* See if point is on a partially visible line at the end. */ | |
4684 | if (it.what == IT_EOB) | |
4685 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
4686 | else | |
4687 | { | |
e4cc2dfc | 4688 | move_it_by_lines (&it, 1); |
aed328bf KS |
4689 | partial_p = it.current_y > it.last_visible_y; |
4690 | } | |
4691 | ||
bdf4ec93 RS |
4692 | if (charpos == PT && !partial_p |
4693 | && (NILP (Vscroll_preserve_screen_position) | |
4694 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4695 | /* We found PT before we found the display margin, so PT is ok. */ |
4696 | ; | |
66fe93d1 | 4697 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4698 | { |
d3d50620 | 4699 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
940f53e5 | 4700 | start_display (&it, w, start); |
c525d842 CY |
4701 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
4702 | here because we called start_display again and did not | |
4703 | alter it.current_y this time. */ | |
c876b227 SM |
4704 | move_it_to (&it, -1, window_scroll_pixel_based_preserve_x, |
4705 | window_scroll_pixel_based_preserve_y, -1, | |
4706 | MOVE_TO_Y | MOVE_TO_X); | |
940f53e5 RS |
4707 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4708 | } | |
4709 | else | |
4710 | { | |
aed328bf | 4711 | if (partial_p) |
5cdb3cf3 MB |
4712 | /* The last line was only partially visible, so back up two |
4713 | lines to make sure we're on a fully visible line. */ | |
4714 | { | |
e4cc2dfc | 4715 | move_it_by_lines (&it, -2); |
5cdb3cf3 MB |
4716 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4717 | } | |
4718 | else | |
4719 | /* No, the position we saved is OK, so use it. */ | |
4720 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
4721 | } |
4722 | } | |
35928349 | 4723 | bidi_unshelve_cache (itdata, 0); |
5500c422 GM |
4724 | } |
4725 | ||
4726 | ||
4727 | /* Implementation of window_scroll that works based on screen lines. | |
4728 | See the comment of window_scroll for parameter descriptions. */ | |
4729 | ||
4730 | static void | |
971de7fb | 4731 | window_scroll_line_based (Lisp_Object window, int n, int whole, int noerror) |
7ab12479 JB |
4732 | { |
4733 | register struct window *w = XWINDOW (window); | |
03ab8921 EZ |
4734 | /* Fvertical_motion enters redisplay, which can trigger |
4735 | fontification, which in turn can modify buffer text (e.g., if the | |
4736 | fontification functions replace escape sequences with faces, as | |
4737 | in `grep-mode-font-lock-keywords'). So we use a marker to record | |
4738 | the old point position, to prevent crashes in SET_PT_BOTH. */ | |
4739 | Lisp_Object opoint_marker = Fpoint_marker (); | |
d311d28c | 4740 | register ptrdiff_t pos, pos_byte; |
7ab12479 JB |
4741 | register int ht = window_internal_height (w); |
4742 | register Lisp_Object tem; | |
4743 | int lose; | |
5500c422 | 4744 | Lisp_Object bolp; |
d311d28c | 4745 | ptrdiff_t startpos; |
c876b227 | 4746 | Lisp_Object original_pos = Qnil; |
101d1605 | 4747 | |
d4e7cf01 GM |
4748 | /* If scrolling screen-fulls, compute the number of lines to |
4749 | scroll from the window's height. */ | |
4750 | if (whole) | |
4751 | n *= max (1, ht - next_screen_context_lines); | |
4752 | ||
d3d50620 | 4753 | startpos = marker_position (w->start); |
101d1605 | 4754 | |
c876b227 SM |
4755 | if (!NILP (Vscroll_preserve_screen_position)) |
4756 | { | |
4757 | if (window_scroll_preserve_vpos <= 0 | |
1344aad4 TT |
4758 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4759 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c876b227 SM |
4760 | { |
4761 | struct position posit | |
4762 | = *compute_motion (startpos, 0, 0, 0, | |
4763 | PT, ht, 0, | |
80b00b08 | 4764 | -1, w->hscroll, |
c876b227 SM |
4765 | 0, w); |
4766 | window_scroll_preserve_vpos = posit.vpos; | |
80b00b08 | 4767 | window_scroll_preserve_hpos = posit.hpos + w->hscroll; |
c876b227 SM |
4768 | } |
4769 | ||
4770 | original_pos = Fcons (make_number (window_scroll_preserve_hpos), | |
4771 | make_number (window_scroll_preserve_vpos)); | |
4772 | } | |
0a1f771a | 4773 | |
d834a2e9 | 4774 | XSETFASTINT (tem, PT); |
6ffdb539 | 4775 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 4776 | |
265a9e55 | 4777 | if (NILP (tem)) |
7ab12479 | 4778 | { |
cd2be1dd | 4779 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 4780 | startpos = PT; |
7ab12479 JB |
4781 | } |
4782 | ||
345d45b2 | 4783 | SET_PT (startpos); |
5ce7b543 | 4784 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 4785 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 4786 | pos = PT; |
b73ea88e | 4787 | pos_byte = PT_BYTE; |
7ab12479 | 4788 | bolp = Fbolp (); |
03ab8921 EZ |
4789 | SET_PT_BOTH (marker_position (opoint_marker), |
4790 | marker_byte_position (opoint_marker)); | |
7ab12479 JB |
4791 | |
4792 | if (lose) | |
f8026fd8 JB |
4793 | { |
4794 | if (noerror) | |
4795 | return; | |
4796 | else | |
ba96a5cf | 4797 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 4798 | } |
7ab12479 JB |
4799 | |
4800 | if (pos < ZV) | |
7ab12479 | 4801 | { |
0c7da84e | 4802 | /* Don't use a scroll margin that is negative or too large. */ |
71f02bc5 | 4803 | int this_scroll_margin = |
d3d50620 | 4804 | max (0, min (scroll_margin, XINT (w->total_lines) / 4)); |
0c7da84e | 4805 | |
d3d50620 | 4806 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
c98ff5dd DA |
4807 | w->start_at_line_beg = !NILP (bolp); |
4808 | w->update_mode_line = 1; | |
80b00b08 DA |
4809 | w->last_modified = 0; |
4810 | w->last_overlay_modified = 0; | |
345d45b2 RS |
4811 | /* Set force_start so that redisplay_window will run |
4812 | the window-scroll-functions. */ | |
c98ff5dd | 4813 | w->force_start = 1; |
0c7da84e | 4814 | |
bdf4ec93 RS |
4815 | if (!NILP (Vscroll_preserve_screen_position) |
4816 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 4817 | { |
b73ea88e | 4818 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4819 | Fvertical_motion (original_pos, window); |
0c7da84e | 4820 | } |
101d1605 RS |
4821 | /* If we scrolled forward, put point enough lines down |
4822 | that it is outside the scroll margin. */ | |
4823 | else if (n > 0) | |
0c7da84e | 4824 | { |
101d1605 RS |
4825 | int top_margin; |
4826 | ||
4827 | if (this_scroll_margin > 0) | |
4828 | { | |
b73ea88e | 4829 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4830 | Fvertical_motion (make_number (this_scroll_margin), window); |
4831 | top_margin = PT; | |
4832 | } | |
4833 | else | |
4834 | top_margin = pos; | |
4835 | ||
03ab8921 EZ |
4836 | if (top_margin <= marker_position (opoint_marker)) |
4837 | SET_PT_BOTH (marker_position (opoint_marker), | |
4838 | marker_byte_position (opoint_marker)); | |
5500c422 | 4839 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 4840 | { |
b73ea88e | 4841 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4842 | Fvertical_motion (original_pos, window); |
101d1605 | 4843 | } |
9317a85d | 4844 | else |
335406fc | 4845 | SET_PT (top_margin); |
0c7da84e | 4846 | } |
101d1605 | 4847 | else if (n < 0) |
7ab12479 | 4848 | { |
101d1605 RS |
4849 | int bottom_margin; |
4850 | ||
0c7da84e RS |
4851 | /* If we scrolled backward, put point near the end of the window |
4852 | but not within the scroll margin. */ | |
b73ea88e | 4853 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 4854 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
4855 | if (XFASTINT (tem) == ht - this_scroll_margin) |
4856 | bottom_margin = PT; | |
4857 | else | |
4858 | bottom_margin = PT + 1; | |
4859 | ||
03ab8921 EZ |
4860 | if (bottom_margin > marker_position (opoint_marker)) |
4861 | SET_PT_BOTH (marker_position (opoint_marker), | |
4862 | marker_byte_position (opoint_marker)); | |
7ab12479 | 4863 | else |
101d1605 | 4864 | { |
5500c422 | 4865 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 4866 | { |
b73ea88e | 4867 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4868 | Fvertical_motion (original_pos, window); |
9317a85d RS |
4869 | } |
4870 | else | |
4871 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 4872 | } |
7ab12479 JB |
4873 | } |
4874 | } | |
4875 | else | |
f8026fd8 JB |
4876 | { |
4877 | if (noerror) | |
4878 | return; | |
4879 | else | |
ba96a5cf | 4880 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 4881 | } |
7ab12479 | 4882 | } |
5500c422 GM |
4883 | |
4884 | ||
4885 | /* Scroll selected_window up or down. If N is nil, scroll a | |
4886 | screen-full which is defined as the height of the window minus | |
4887 | next_screen_context_lines. If N is the symbol `-', scroll. | |
4888 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
4889 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
4890 | |
4891 | static void | |
971de7fb | 4892 | scroll_command (Lisp_Object n, int direction) |
7ab12479 | 4893 | { |
d311d28c | 4894 | ptrdiff_t count = SPECPDL_INDEX (); |
7ab12479 | 4895 | |
a54e2c05 | 4896 | eassert (eabs (direction) == 1); |
5500c422 GM |
4897 | |
4898 | /* If selected window's buffer isn't current, make it current for | |
4899 | the moment. But don't screw up if window_scroll gets an error. */ | |
d3d50620 | 4900 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
4901 | { |
4902 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
d3d50620 | 4903 | Fset_buffer (XWINDOW (selected_window)->buffer); |
5500c422 GM |
4904 | |
4905 | /* Make redisplay consider other windows than just selected_window. */ | |
4906 | ++windows_or_buffers_changed; | |
95605e15 | 4907 | } |
7ab12479 | 4908 | |
265a9e55 | 4909 | if (NILP (n)) |
d4e7cf01 | 4910 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 4911 | else if (EQ (n, Qminus)) |
d4e7cf01 | 4912 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
4913 | else |
4914 | { | |
4915 | n = Fprefix_numeric_value (n); | |
101d1605 | 4916 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 4917 | } |
95605e15 JB |
4918 | |
4919 | unbind_to (count, Qnil); | |
7ab12479 JB |
4920 | } |
4921 | ||
e0965597 | 4922 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
12bb3111 | 4923 | doc: /* Scroll text of selected window upward ARG lines. |
a0a37a6f | 4924 | If ARG is omitted or nil, scroll upward by a near full screen. |
fdb82f93 PJ |
4925 | A near full screen is `next-screen-context-lines' less than a full screen. |
4926 | Negative ARG means scroll downward. | |
4927 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4928 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4929 | (Lisp_Object arg) |
7ab12479 | 4930 | { |
413430c5 | 4931 | scroll_command (arg, 1); |
7ab12479 JB |
4932 | return Qnil; |
4933 | } | |
4934 | ||
e0965597 | 4935 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
12bb3111 | 4936 | doc: /* Scroll text of selected window down ARG lines. |
a0a37a6f | 4937 | If ARG is omitted or nil, scroll down by a near full screen. |
fdb82f93 PJ |
4938 | A near full screen is `next-screen-context-lines' less than a full screen. |
4939 | Negative ARG means scroll upward. | |
4940 | If ARG is the atom `-', scroll upward by nearly full screen. | |
4941 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4942 | (Lisp_Object arg) |
7ab12479 | 4943 | { |
413430c5 | 4944 | scroll_command (arg, -1); |
7ab12479 JB |
4945 | return Qnil; |
4946 | } | |
ccd0664b RS |
4947 | \f |
4948 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 4949 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 4950 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
4951 | showing that buffer is used. |
4952 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4953 | specifies the window. This takes precedence over | |
4954 | `other-window-scroll-buffer'. */) | |
5842a27b | 4955 | (void) |
7ab12479 | 4956 | { |
ccd0664b | 4957 | Lisp_Object window; |
7ab12479 JB |
4958 | |
4959 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 4960 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
4961 | window = Vminibuf_scroll_window; |
4962 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 4963 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
4964 | { |
4965 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 4966 | if (NILP (window)) |
87478b52 | 4967 | window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
4968 | } |
4969 | else | |
dbc4e1c1 JB |
4970 | { |
4971 | /* Nothing specified; look for a neighboring window on the same | |
4972 | frame. */ | |
4973 | window = Fnext_window (selected_window, Qnil, Qnil); | |
4974 | ||
4975 | if (EQ (window, selected_window)) | |
4976 | /* That didn't get us anywhere; look for a window on another | |
4977 | visible frame. */ | |
4978 | do | |
4979 | window = Fnext_window (window, Qnil, Qt); | |
4980 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
4981 | && ! EQ (window, selected_window)); | |
4982 | } | |
4983 | ||
b7826503 | 4984 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
4985 | |
4986 | if (EQ (window, selected_window)) | |
4987 | error ("There is no other window"); | |
4988 | ||
ccd0664b RS |
4989 | return window; |
4990 | } | |
4991 | ||
4992 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
4993 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
4994 | A near full screen is `next-screen-context-lines' less than a full screen. | |
4995 | The next window is the one below the current one; or the one at the top | |
4996 | if the current one is at the bottom. Negative ARG means scroll downward. | |
4997 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4998 | When calling from a program, supply as argument a number, nil, or `-'. | |
4999 | ||
fdb82f93 | 5000 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5001 | showing that buffer, popping the buffer up if necessary. |
5002 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5003 | specifies the window to scroll. This takes precedence over | |
5004 | `other-window-scroll-buffer'. */) | |
5842a27b | 5005 | (Lisp_Object arg) |
ccd0664b | 5006 | { |
d4e7cf01 GM |
5007 | Lisp_Object window; |
5008 | struct window *w; | |
d311d28c | 5009 | ptrdiff_t count = SPECPDL_INDEX (); |
ccd0664b RS |
5010 | |
5011 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5012 | w = XWINDOW (window); |
7ab12479 JB |
5013 | |
5014 | /* Don't screw up if window_scroll gets an error. */ | |
5015 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5016 | ++windows_or_buffers_changed; |
7ab12479 | 5017 | |
d3d50620 DA |
5018 | Fset_buffer (w->buffer); |
5019 | SET_PT (marker_position (w->pointm)); | |
7ab12479 | 5020 | |
413430c5 | 5021 | if (NILP (arg)) |
d4e7cf01 | 5022 | window_scroll (window, 1, 1, 1); |
413430c5 | 5023 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5024 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5025 | else |
5026 | { | |
413430c5 | 5027 | if (CONSP (arg)) |
7d7bbefd | 5028 | arg = XCAR (arg); |
b7826503 | 5029 | CHECK_NUMBER (arg); |
101d1605 | 5030 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5031 | } |
5032 | ||
d3d50620 | 5033 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5034 | unbind_to (count, Qnil); |
7ab12479 JB |
5035 | |
5036 | return Qnil; | |
5037 | } | |
5038 | \f | |
e0965597 | 5039 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 5040 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5041 | Default for ARG is window width minus 2. |
5042 | Value is the total amount of leftward horizontal scrolling in | |
5043 | effect after the change. | |
23fe745a | 5044 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5045 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5046 | will not scroll a window to a column less than the value returned |
dc297565 | 5047 | by this function. This happens in an interactive call. */) |
5842a27b | 5048 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 5049 | { |
c67fa410 | 5050 | struct window *w = XWINDOW (selected_window); |
aa754e6a PE |
5051 | EMACS_INT requested_arg = (NILP (arg) |
5052 | ? window_body_cols (w) - 2 | |
5053 | : XINT (Fprefix_numeric_value (arg))); | |
24a212eb | 5054 | Lisp_Object result = set_window_hscroll (w, w->hscroll + requested_arg); |
c67fa410 | 5055 | |
dc297565 | 5056 | if (!NILP (set_minimum)) |
c67fa410 GM |
5057 | w->min_hscroll = w->hscroll; |
5058 | ||
5059 | return result; | |
7ab12479 JB |
5060 | } |
5061 | ||
e0965597 | 5062 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 5063 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5064 | Default for ARG is window width minus 2. |
5065 | Value is the total amount of leftward horizontal scrolling in | |
5066 | effect after the change. | |
23fe745a | 5067 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5068 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5069 | will not scroll a window to a column less than the value returned |
dc297565 | 5070 | by this function. This happens in an interactive call. */) |
5842a27b | 5071 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 5072 | { |
c67fa410 | 5073 | struct window *w = XWINDOW (selected_window); |
aa754e6a PE |
5074 | EMACS_INT requested_arg = (NILP (arg) |
5075 | ? window_body_cols (w) - 2 | |
5076 | : XINT (Fprefix_numeric_value (arg))); | |
24a212eb | 5077 | Lisp_Object result = set_window_hscroll (w, w->hscroll - requested_arg); |
177c0ea7 | 5078 | |
dc297565 | 5079 | if (!NILP (set_minimum)) |
c67fa410 GM |
5080 | w->min_hscroll = w->hscroll; |
5081 | ||
5082 | return result; | |
7ab12479 JB |
5083 | } |
5084 | ||
fa832261 KS |
5085 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5086 | doc: /* Return the window which was selected when entering the minibuffer. | |
12bb3111 | 5087 | Returns nil, if selected window is not a minibuffer window. */) |
5842a27b | 5088 | (void) |
fa832261 KS |
5089 | { |
5090 | if (minibuf_level > 0 | |
5091 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5092 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5093 | return minibuf_selected_window; | |
5094 | ||
5095 | return Qnil; | |
5096 | } | |
5097 | ||
12c8b416 GM |
5098 | /* Value is the number of lines actually displayed in window W, |
5099 | as opposed to its height. */ | |
5100 | ||
5101 | static int | |
971de7fb | 5102 | displayed_window_lines (struct window *w) |
12c8b416 GM |
5103 | { |
5104 | struct it it; | |
5105 | struct text_pos start; | |
5106 | int height = window_box_height (w); | |
5107 | struct buffer *old_buffer; | |
5108 | int bottom_y; | |
57b3e30b | 5109 | void *itdata = NULL; |
12c8b416 | 5110 | |
d3d50620 | 5111 | if (XBUFFER (w->buffer) != current_buffer) |
12c8b416 GM |
5112 | { |
5113 | old_buffer = current_buffer; | |
d3d50620 | 5114 | set_buffer_internal (XBUFFER (w->buffer)); |
12c8b416 GM |
5115 | } |
5116 | else | |
5117 | old_buffer = NULL; | |
5118 | ||
521b203e GM |
5119 | /* In case W->start is out of the accessible range, do something |
5120 | reasonable. This happens in Info mode when Info-scroll-down | |
5121 | calls (recenter -1) while W->start is 1. */ | |
d3d50620 | 5122 | if (XMARKER (w->start)->charpos < BEGV) |
521b203e | 5123 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); |
d3d50620 | 5124 | else if (XMARKER (w->start)->charpos > ZV) |
521b203e GM |
5125 | SET_TEXT_POS (start, ZV, ZV_BYTE); |
5126 | else | |
d3d50620 | 5127 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
521b203e | 5128 | |
57b3e30b | 5129 | itdata = bidi_shelve_cache (); |
12c8b416 GM |
5130 | start_display (&it, w, start); |
5131 | move_it_vertically (&it, height); | |
c8bc6f65 | 5132 | bottom_y = line_bottom_y (&it); |
35928349 | 5133 | bidi_unshelve_cache (itdata, 0); |
12c8b416 | 5134 | |
1de65f51 RS |
5135 | /* rms: On a non-window display, |
5136 | the value of it.vpos at the bottom of the screen | |
5137 | seems to be 1 larger than window_box_height (w). | |
5138 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5139 | when ZV is on the last screen line | |
5140 | moves to the previous screen line instead of the last one. */ | |
d3d50620 | 5141 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) |
1de65f51 RS |
5142 | height++; |
5143 | ||
12c8b416 GM |
5144 | /* Add in empty lines at the bottom of the window. */ |
5145 | if (bottom_y < height) | |
5146 | { | |
949cf20f | 5147 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5148 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5149 | } |
5150 | ||
c8bc6f65 GM |
5151 | if (old_buffer) |
5152 | set_buffer_internal (old_buffer); | |
5153 | ||
12c8b416 GM |
5154 | return it.vpos; |
5155 | } | |
5156 | ||
5157 | ||
a7ca3326 | 5158 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
666e158e | 5159 | doc: /* Center point in selected window and maybe redisplay frame. |
fdb82f93 | 5160 | With prefix argument ARG, recenter putting point on screen line ARG |
12bb3111 | 5161 | relative to the selected window. If ARG is negative, it counts up from the |
fdb82f93 PJ |
5162 | bottom of the window. (ARG should be less than the height of the window.) |
5163 | ||
666e158e MB |
5164 | If ARG is omitted or nil, then recenter with point on the middle line of |
5165 | the selected window; if the variable `recenter-redisplay' is non-nil, | |
5166 | also erase the entire frame and redraw it (when `auto-resize-tool-bars' | |
5167 | is set to `grow-only', this resets the tool-bar's height to the minimum | |
5168 | height needed); if `recenter-redisplay' has the special value `tty', | |
53524d93 | 5169 | then only tty frames are redrawn. |
7d1d98ee | 5170 | |
fdb82f93 PJ |
5171 | Just C-u as prefix means put point in the center of the window |
5172 | and redisplay normally--don't erase and redraw the frame. */) | |
5842a27b | 5173 | (register Lisp_Object arg) |
7ab12479 | 5174 | { |
6df47b59 | 5175 | struct window *w = XWINDOW (selected_window); |
d3d50620 | 5176 | struct buffer *buf = XBUFFER (w->buffer); |
478292ed | 5177 | struct buffer *obuf = current_buffer; |
6df47b59 | 5178 | int center_p = 0; |
d311d28c | 5179 | ptrdiff_t charpos, bytepos; |
71f02bc5 | 5180 | EMACS_INT iarg IF_LINT (= 0); |
f6b43440 | 5181 | int this_scroll_margin; |
7ab12479 | 5182 | |
0fa5d25b RS |
5183 | /* If redisplay is suppressed due to an error, try again. */ |
5184 | obuf->display_error_modiff = 0; | |
5185 | ||
413430c5 | 5186 | if (NILP (arg)) |
7ab12479 | 5187 | { |
666e158e MB |
5188 | if (!NILP (Vrecenter_redisplay) |
5189 | && (!EQ (Vrecenter_redisplay, Qtty) | |
5190 | || !NILP (Ftty_type (selected_frame)))) | |
5191 | { | |
ebfa62c0 | 5192 | ptrdiff_t i; |
f02d6d5c | 5193 | |
666e158e MB |
5194 | /* Invalidate pixel data calculated for all compositions. */ |
5195 | for (i = 0; i < n_compositions; i++) | |
5196 | composition_table[i]->font = NULL; | |
7ab12479 | 5197 | |
666e158e MB |
5198 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5199 | ||
5200 | Fredraw_frame (WINDOW_FRAME (w)); | |
5201 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
5202 | } | |
7d1d98ee | 5203 | |
6df47b59 | 5204 | center_p = 1; |
7ab12479 | 5205 | } |
413430c5 | 5206 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5207 | center_p = 1; |
7ab12479 JB |
5208 | else |
5209 | { | |
413430c5 | 5210 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5211 | CHECK_NUMBER (arg); |
ae12ecd7 | 5212 | iarg = XINT (arg); |
7ab12479 JB |
5213 | } |
5214 | ||
478292ed | 5215 | set_buffer_internal (buf); |
7ab12479 | 5216 | |
f6b43440 RS |
5217 | /* Do this after making BUF current |
5218 | in case scroll_margin is buffer-local. */ | |
71f02bc5 | 5219 | this_scroll_margin = |
d3d50620 | 5220 | max (0, min (scroll_margin, XFASTINT (w->total_lines) / 4)); |
f6b43440 | 5221 | |
521b203e | 5222 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5223 | have variable-height lines and centering point on the basis of |
5224 | line counts would lead to strange effects. */ | |
d3d50620 | 5225 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5226 | { |
6df47b59 GM |
5227 | if (center_p) |
5228 | { | |
521b203e GM |
5229 | struct it it; |
5230 | struct text_pos pt; | |
57b3e30b | 5231 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5232 | |
521b203e GM |
5233 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5234 | start_display (&it, w, pt); | |
f204989e | 5235 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5236 | charpos = IT_CHARPOS (it); |
5237 | bytepos = IT_BYTEPOS (it); | |
35928349 | 5238 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5239 | } |
f6b43440 | 5240 | else if (iarg < 0) |
6df47b59 | 5241 | { |
521b203e GM |
5242 | struct it it; |
5243 | struct text_pos pt; | |
5895d7b9 | 5244 | ptrdiff_t nlines = min (PTRDIFF_MAX, -iarg); |
f204989e KS |
5245 | int extra_line_spacing; |
5246 | int h = window_box_height (w); | |
57b3e30b | 5247 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5248 | |
f6b43440 RS |
5249 | iarg = - max (-iarg, this_scroll_margin); |
5250 | ||
521b203e GM |
5251 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5252 | start_display (&it, w, pt); | |
f204989e KS |
5253 | |
5254 | /* Be sure we have the exact height of the full line containing PT. */ | |
e4cc2dfc | 5255 | move_it_by_lines (&it, 0); |
521b203e | 5256 | |
d466fa4d | 5257 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5258 | height minus what's displayed in the line containing PT, |
5259 | and the lines below. */ | |
f204989e KS |
5260 | it.current_y = 0; |
5261 | it.vpos = 0; | |
e4cc2dfc | 5262 | move_it_by_lines (&it, nlines); |
d466fa4d | 5263 | |
f204989e KS |
5264 | if (it.vpos == nlines) |
5265 | h -= it.current_y; | |
5266 | else | |
5267 | { | |
5268 | /* Last line has no newline */ | |
5269 | h -= line_bottom_y (&it); | |
5270 | it.vpos++; | |
5271 | } | |
5272 | ||
5273 | /* Don't reserve space for extra line spacing of last line. */ | |
5274 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5275 | |
5276 | /* If we can't move down NLINES lines because we hit | |
5277 | the end of the buffer, count in some empty lines. */ | |
5278 | if (it.vpos < nlines) | |
f204989e KS |
5279 | { |
5280 | nlines -= it.vpos; | |
5281 | extra_line_spacing = it.extra_line_spacing; | |
5282 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5283 | } | |
5284 | if (h <= 0) | |
57b3e30b | 5285 | { |
35928349 | 5286 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
5287 | return Qnil; |
5288 | } | |
201c831a | 5289 | |
f204989e | 5290 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5291 | start_display (&it, w, pt); |
f204989e KS |
5292 | it.current_y = 0; |
5293 | move_it_vertically_backward (&it, h); | |
5294 | ||
5295 | /* If extra line spacing is present, we may move too far | |
5296 | back. This causes the last line to be only partially | |
5297 | visible (which triggers redisplay to recenter that line | |
5298 | in the middle), so move forward. | |
5299 | But ignore extra line spacing on last line, as it is not | |
5300 | considered to be part of the visible height of the line. | |
5301 | */ | |
5302 | h += extra_line_spacing; | |
5303 | while (-it.current_y > h) | |
e4cc2dfc | 5304 | move_it_by_lines (&it, 1); |
f204989e | 5305 | |
521b203e GM |
5306 | charpos = IT_CHARPOS (it); |
5307 | bytepos = IT_BYTEPOS (it); | |
57b3e30b | 5308 | |
35928349 | 5309 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5310 | } |
521b203e GM |
5311 | else |
5312 | { | |
5313 | struct position pos; | |
f6b43440 | 5314 | |
f6b43440 RS |
5315 | iarg = max (iarg, this_scroll_margin); |
5316 | ||
5317 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5318 | charpos = pos.bufpos; |
5319 | bytepos = pos.bytepos; | |
5320 | } | |
5321 | } | |
5322 | else | |
5323 | { | |
5324 | struct position pos; | |
5325 | int ht = window_internal_height (w); | |
5326 | ||
5327 | if (center_p) | |
a4429c5b | 5328 | iarg = ht / 2; |
f567c488 KS |
5329 | else if (iarg < 0) |
5330 | iarg += ht; | |
f6b43440 RS |
5331 | |
5332 | /* Don't let it get into the margin at either top or bottom. */ | |
5333 | iarg = max (iarg, this_scroll_margin); | |
5334 | iarg = min (iarg, ht - this_scroll_margin - 1); | |
177c0ea7 | 5335 | |
f6b43440 | 5336 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
5337 | charpos = pos.bufpos; |
5338 | bytepos = pos.bytepos; | |
5339 | } | |
5340 | ||
5341 | /* Set the new window start. */ | |
d3d50620 | 5342 | set_marker_both (w->start, w->buffer, charpos, bytepos); |
e8c17b81 | 5343 | wset_window_end_valid (w, Qnil); |
177c0ea7 | 5344 | |
c98ff5dd | 5345 | w->optional_new_start = 1; |
95605b1b | 5346 | |
c98ff5dd DA |
5347 | w->start_at_line_beg = (bytepos == BEGV_BYTE || |
5348 | FETCH_BYTE (bytepos - 1) == '\n'); | |
177c0ea7 | 5349 | |
478292ed | 5350 | set_buffer_internal (obuf); |
7ab12479 JB |
5351 | return Qnil; |
5352 | } | |
b7617575 | 5353 | |
81fe0836 | 5354 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5355 | 0, 1, 0, |
5356 | doc: /* Return the height in lines of the text display area of WINDOW. | |
52162052 | 5357 | WINDOW must be a live window and defaults to the selected one. |
8fef9de1 | 5358 | |
105216ed CY |
5359 | The returned height does not include the mode line, any header line, |
5360 | nor any partial-height lines at the bottom of the text area. */) | |
5842a27b | 5361 | (Lisp_Object window) |
81fe0836 | 5362 | { |
52162052 | 5363 | struct window *w = decode_live_window (window); |
81fe0836 | 5364 | int pixel_height = window_box_height (w); |
d3d50620 | 5365 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5366 | return make_number (line_height); |
5367 | } | |
5368 | ||
5369 | ||
7ab12479 JB |
5370 | \f |
5371 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5372 | 1, 1, "P", |
5373 | doc: /* Position point relative to window. | |
87e68db4 JB |
5374 | ARG nil means position point at center of window. |
5375 | Else, ARG specifies vertical position within the window; | |
fdb82f93 | 5376 | zero means top of window, negative means relative to bottom of window. */) |
5842a27b | 5377 | (Lisp_Object arg) |
7ab12479 | 5378 | { |
b7617575 GM |
5379 | struct window *w = XWINDOW (selected_window); |
5380 | int lines, start; | |
540b6aa0 | 5381 | Lisp_Object window; |
f6b43440 RS |
5382 | #if 0 |
5383 | int this_scroll_margin; | |
5384 | #endif | |
7ab12479 | 5385 | |
d3d50620 DA |
5386 | if (!(BUFFERP (w->buffer) |
5387 | && XBUFFER (w->buffer) == current_buffer)) | |
794b75c7 SM |
5388 | /* This test is needed to make sure PT/PT_BYTE make sense in w->buffer |
5389 | when passed below to set_marker_both. */ | |
5390 | error ("move-to-window-line called from unrelated buffer"); | |
6dc1d2d3 | 5391 | |
b7617575 | 5392 | window = selected_window; |
d3d50620 | 5393 | start = marker_position (w->start); |
7ab12479 JB |
5394 | if (start < BEGV || start > ZV) |
5395 | { | |
b7617575 | 5396 | int height = window_internal_height (w); |
cd2be1dd | 5397 | Fvertical_motion (make_number (- (height / 2)), window); |
d3d50620 | 5398 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
c98ff5dd DA |
5399 | w->start_at_line_beg = !NILP (Fbolp ()); |
5400 | w->force_start = 1; | |
7ab12479 JB |
5401 | } |
5402 | else | |
d3d50620 | 5403 | Fgoto_char (w->start); |
7ab12479 | 5404 | |
b7617575 | 5405 | lines = displayed_window_lines (w); |
f6b43440 RS |
5406 | |
5407 | #if 0 | |
71f02bc5 | 5408 | this_scroll_margin = max (0, min (scroll_margin, lines / 4)); |
f6b43440 RS |
5409 | #endif |
5410 | ||
b7617575 GM |
5411 | if (NILP (arg)) |
5412 | XSETFASTINT (arg, lines / 2); | |
5413 | else | |
5414 | { | |
71f02bc5 | 5415 | EMACS_INT iarg = XINT (Fprefix_numeric_value (arg)); |
f6b43440 RS |
5416 | |
5417 | if (iarg < 0) | |
5418 | iarg = iarg + lines; | |
5419 | ||
5420 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5421 | to a place inside the scroll margins (which would cause the | |
5422 | next redisplay to scroll). I wrote this code, but then concluded | |
5423 | it is probably better not to install it. However, it is here | |
5424 | inside #if 0 so as not to lose it. -- rms. */ | |
5425 | ||
5426 | /* Don't let it get into the margin at either top or bottom. */ | |
5427 | iarg = max (iarg, this_scroll_margin); | |
5428 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5429 | #endif | |
5430 | ||
5431 | arg = make_number (iarg); | |
b7617575 GM |
5432 | } |
5433 | ||
c8bc6f65 | 5434 | /* Skip past a partially visible first line. */ |
163784df | 5435 | if (w->vscroll) |
163784df MB |
5436 | XSETINT (arg, XINT (arg) + 1); |
5437 | ||
540b6aa0 | 5438 | return Fvertical_motion (arg, window); |
7ab12479 | 5439 | } |
5500c422 GM |
5440 | |
5441 | ||
7ab12479 | 5442 | \f |
5500c422 GM |
5443 | /*********************************************************************** |
5444 | Window Configuration | |
5445 | ***********************************************************************/ | |
5446 | ||
7ab12479 JB |
5447 | struct save_window_data |
5448 | { | |
b102ceb1 | 5449 | struct vectorlike_header header; |
bdc727bf | 5450 | Lisp_Object selected_frame; |
7ab12479 JB |
5451 | Lisp_Object current_window; |
5452 | Lisp_Object current_buffer; | |
5453 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5454 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5455 | Lisp_Object root_window; |
bdc727bf | 5456 | Lisp_Object focus_frame; |
cbff28e8 RS |
5457 | /* A vector, each of whose elements is a struct saved_window |
5458 | for one window. */ | |
7ab12479 | 5459 | Lisp_Object saved_windows; |
b05b4e27 SM |
5460 | |
5461 | /* All fields above are traced by the GC. | |
5462 | From `fame-cols' down, the fields are ignored by the GC. */ | |
5463 | ||
5464 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
5465 | int frame_tool_bar_lines; | |
7ab12479 | 5466 | }; |
ff06df24 | 5467 | |
cbff28e8 | 5468 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 5469 | struct saved_window |
ea68264b | 5470 | { |
b102ceb1 | 5471 | struct vectorlike_header header; |
496e208e | 5472 | |
28545e04 | 5473 | Lisp_Object window, buffer, start, pointm, mark; |
949cf20f | 5474 | Lisp_Object left_col, top_line, total_cols, total_lines; |
496e208e | 5475 | Lisp_Object normal_cols, normal_lines; |
949cf20f | 5476 | Lisp_Object hscroll, min_hscroll; |
ea68264b GM |
5477 | Lisp_Object parent, prev; |
5478 | Lisp_Object start_at_line_beg; | |
5479 | Lisp_Object display_table; | |
949cf20f KS |
5480 | Lisp_Object left_margin_cols, right_margin_cols; |
5481 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
562dd5e9 | 5482 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type, dedicated; |
b6f67890 | 5483 | Lisp_Object combination_limit, window_parameters; |
ea68264b GM |
5484 | }; |
5485 | ||
7ab12479 JB |
5486 | #define SAVED_WINDOW_N(swv,n) \ |
5487 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
5488 | ||
5489 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 | 5490 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5842a27b | 5491 | (Lisp_Object object) |
7ab12479 | 5492 | { |
6ad0381c | 5493 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
5494 | } |
5495 | ||
3f8ab7bd | 5496 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 | 5497 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5842a27b | 5498 | (Lisp_Object config) |
3f8ab7bd RS |
5499 | { |
5500 | register struct save_window_data *data; | |
5501 | struct Lisp_Vector *saved_windows; | |
5502 | ||
663fbbba | 5503 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
5504 | |
5505 | data = (struct save_window_data *) XVECTOR (config); | |
5506 | saved_windows = XVECTOR (data->saved_windows); | |
d3d50620 | 5507 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
3f8ab7bd RS |
5508 | } |
5509 | ||
a7ca3326 | 5510 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
5511 | Sset_window_configuration, 1, 1, 0, |
5512 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
5513 | CONFIGURATION must be a value previously returned | |
5514 | by `current-window-configuration' (which see). | |
5515 | If CONFIGURATION was made from a frame that is now deleted, | |
5516 | only frame-independent values can be restored. In this case, | |
5517 | the return value is nil. Otherwise the value is t. */) | |
5842a27b | 5518 | (Lisp_Object configuration) |
7ab12479 | 5519 | { |
7ab12479 JB |
5520 | register struct save_window_data *data; |
5521 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 5522 | Lisp_Object new_current_buffer; |
fd482be5 | 5523 | Lisp_Object frame; |
44fa5b1e | 5524 | FRAME_PTR f; |
d311d28c | 5525 | ptrdiff_t old_point = -1; |
7ab12479 | 5526 | |
663fbbba | 5527 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 5528 | |
2f83aebe | 5529 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
5530 | saved_windows = XVECTOR (data->saved_windows); |
5531 | ||
7ab12479 | 5532 | new_current_buffer = data->current_buffer; |
e578f381 | 5533 | if (!BUFFER_LIVE_P (XBUFFER (new_current_buffer))) |
7ab12479 | 5534 | new_current_buffer = Qnil; |
72695e47 | 5535 | else |
73cadfc1 DK |
5536 | { |
5537 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
5538 | /* The code further down "preserves point" by saving here PT in |
5539 | old_point and then setting it later back into PT. When the | |
5540 | current-selected-window and the final-selected-window both show | |
5541 | the current buffer, this suffers from the problem that the | |
5542 | current PT is the window-point of the current-selected-window, | |
5543 | while the final PT is the point of the final-selected-window, so | |
5544 | this copy from one PT to the other would end up moving the | |
5545 | window-point of the final-selected-window to the window-point of | |
5546 | the current-selected-window. So we have to be careful which | |
5547 | point of the current-buffer we copy into old_point. */ | |
d3d50620 | 5548 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) |
e67a1dea | 5549 | && WINDOWP (selected_window) |
d3d50620 | 5550 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) |
e67a1dea | 5551 | && !EQ (selected_window, data->current_window)) |
d3d50620 | 5552 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; |
e67a1dea SM |
5553 | else |
5554 | old_point = PT; | |
73cadfc1 | 5555 | else |
203eb0aa SM |
5556 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
5557 | point in new_current_buffer as of the last time this buffer was | |
5558 | used. This can be non-deterministic since it can be changed by | |
5559 | things like jit-lock by mere temporary selection of some random | |
5560 | window that happens to show this buffer. | |
5561 | So if possible we want this arbitrary choice of "which point" to | |
5562 | be the one from the to-be-selected-window so as to prevent this | |
5563 | window's cursor from being copied from another window. */ | |
d3d50620 | 5564 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) |
203eb0aa SM |
5565 | /* If current_window = selected_window, its point is in BUF_PT. */ |
5566 | && !EQ (selected_window, data->current_window)) | |
d3d50620 | 5567 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; |
203eb0aa SM |
5568 | else |
5569 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 5570 | } |
7ab12479 | 5571 | |
d3d50620 | 5572 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
fd482be5 | 5573 | f = XFRAME (frame); |
177c0ea7 | 5574 | |
fd482be5 JB |
5575 | /* If f is a dead frame, don't bother rebuilding its window tree. |
5576 | However, there is other stuff we should still try to do below. */ | |
5577 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 5578 | { |
6198ccd0 MR |
5579 | Lisp_Object window; |
5580 | Lisp_Object dead_windows = Qnil; | |
6a6ee00d | 5581 | register Lisp_Object tem, par, pers; |
fd482be5 JB |
5582 | register struct window *w; |
5583 | register struct saved_window *p; | |
5500c422 GM |
5584 | struct window *root_window; |
5585 | struct window **leaf_windows; | |
5586 | int n_leaf_windows; | |
71f02bc5 PE |
5587 | ptrdiff_t k; |
5588 | int i, n; | |
fd482be5 JB |
5589 | |
5590 | /* If the frame has been resized since this window configuration was | |
5591 | made, we change the frame to the size specified in the | |
5592 | configuration, restore the configuration, and then resize it | |
5593 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
5594 | int previous_frame_lines = FRAME_LINES (f); |
5595 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 5596 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 5597 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 5598 | |
37b9743e MR |
5599 | /* Don't do this within the main loop below: This may call Lisp |
5600 | code and is thus potentially unsafe while input is blocked. */ | |
5601 | for (k = 0; k < saved_windows->header.size; k++) | |
5602 | { | |
5603 | p = SAVED_WINDOW_N (saved_windows, k); | |
5604 | window = p->window; | |
5605 | w = XWINDOW (window); | |
5606 | if (!NILP (w->buffer) | |
5607 | && !EQ (w->buffer, p->buffer) | |
e578f381 | 5608 | && BUFFER_LIVE_P (XBUFFER (p->buffer))) |
37b9743e MR |
5609 | /* If a window we restore gets another buffer, record the |
5610 | window's old buffer. */ | |
5611 | call1 (Qrecord_window_buffer, window); | |
5612 | } | |
5613 | ||
d2b35234 RS |
5614 | /* The mouse highlighting code could get screwed up |
5615 | if it runs during this. */ | |
4d7e6e51 | 5616 | block_input (); |
d2b35234 | 5617 | |
b05b4e27 SM |
5618 | if (data->frame_lines != previous_frame_lines |
5619 | || data->frame_cols != previous_frame_cols) | |
5620 | change_frame_size (f, data->frame_lines, | |
5621 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 5622 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 5623 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 5624 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
5625 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
5626 | make_number (0)); | |
4314246f | 5627 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 5628 | if (data->frame_tool_bar_lines |
9ea173e8 | 5629 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
5630 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
5631 | make_number (0)); | |
4314246f | 5632 | #endif |
217f2871 | 5633 | #endif |
fd482be5 | 5634 | |
a46c0153 RS |
5635 | /* "Swap out" point from the selected window's buffer |
5636 | into the window itself. (Normally the pointm of the selected | |
5637 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
5638 | restoring the window contents, and prevent it from |
5639 | being done later on when we select a new window. */ | |
d3d50620 | 5640 | if (! NILP (XWINDOW (selected_window)->buffer)) |
596ae0cf RS |
5641 | { |
5642 | w = XWINDOW (selected_window); | |
d3d50620 DA |
5643 | set_marker_both (w->pointm, |
5644 | w->buffer, | |
5645 | BUF_PT (XBUFFER (w->buffer)), | |
5646 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
596ae0cf RS |
5647 | } |
5648 | ||
fd482be5 | 5649 | windows_or_buffers_changed++; |
29aeee73 | 5650 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 5651 | |
5500c422 | 5652 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 5653 | is a serious redisplay flickering problem. What we would |
5500c422 | 5654 | really like to do is to free only those matrices not reused |
9d14503e | 5655 | below. */ |
5500c422 | 5656 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); |
38182d90 PE |
5657 | leaf_windows = alloca (count_windows (root_window) |
5658 | * sizeof *leaf_windows); | |
5500c422 GM |
5659 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); |
5660 | ||
fd482be5 JB |
5661 | /* Kludge Alert! |
5662 | Mark all windows now on frame as "deleted". | |
5663 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 5664 | |
fd482be5 JB |
5665 | Save their current buffers in their height fields, since we may |
5666 | need it later, if a buffer saved in the configuration is now | |
5667 | dead. */ | |
be7f5545 | 5668 | delete_all_child_windows (FRAME_ROOT_WINDOW (f)); |
fd482be5 | 5669 | |
eab3844f | 5670 | for (k = 0; k < saved_windows->header.size; k++) |
fd482be5 JB |
5671 | { |
5672 | p = SAVED_WINDOW_N (saved_windows, k); | |
6198ccd0 MR |
5673 | window = p->window; |
5674 | w = XWINDOW (window); | |
e8c17b81 | 5675 | wset_next (w, Qnil); |
7ab12479 | 5676 | |
fd482be5 | 5677 | if (!NILP (p->parent)) |
e8c17b81 PE |
5678 | wset_parent |
5679 | (w, SAVED_WINDOW_N (saved_windows, XFASTINT (p->parent))->window); | |
fd482be5 | 5680 | else |
e8c17b81 | 5681 | wset_parent (w, Qnil); |
7ab12479 | 5682 | |
fd482be5 | 5683 | if (!NILP (p->prev)) |
7ab12479 | 5684 | { |
e8c17b81 PE |
5685 | wset_prev |
5686 | (w, SAVED_WINDOW_N (saved_windows, XFASTINT (p->prev))->window); | |
5687 | wset_next (XWINDOW (w->prev), p->window); | |
fd482be5 JB |
5688 | } |
5689 | else | |
5690 | { | |
e8c17b81 | 5691 | wset_prev (w, Qnil); |
d3d50620 | 5692 | if (!NILP (w->parent)) |
fd482be5 | 5693 | { |
d3d50620 | 5694 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 | 5695 | { |
e8c17b81 PE |
5696 | wset_vchild (XWINDOW (w->parent), p->window); |
5697 | wset_hchild (XWINDOW (w->parent), Qnil); | |
fd482be5 JB |
5698 | } |
5699 | else | |
5700 | { | |
e8c17b81 PE |
5701 | wset_hchild (XWINDOW (w->parent), p->window); |
5702 | wset_vchild (XWINDOW (w->parent), Qnil); | |
fd482be5 JB |
5703 | } |
5704 | } | |
5705 | } | |
5706 | ||
5707 | /* If we squirreled away the buffer in the window's height, | |
5708 | restore it now. */ | |
d3d50620 | 5709 | if (BUFFERP (w->total_lines)) |
e8c17b81 PE |
5710 | wset_buffer (w, w->total_lines); |
5711 | wset_left_col (w, p->left_col); | |
5712 | wset_top_line (w, p->top_line); | |
5713 | wset_total_cols (w, p->total_cols); | |
5714 | wset_total_lines (w, p->total_lines); | |
5715 | wset_normal_cols (w, p->normal_cols); | |
5716 | wset_normal_lines (w, p->normal_lines); | |
80b00b08 DA |
5717 | w->hscroll = XFASTINT (p->hscroll); |
5718 | w->min_hscroll = XFASTINT (p->min_hscroll); | |
e8c17b81 PE |
5719 | wset_display_table (w, p->display_table); |
5720 | wset_left_margin_cols (w, p->left_margin_cols); | |
5721 | wset_right_margin_cols (w, p->right_margin_cols); | |
5722 | wset_left_fringe_width (w, p->left_fringe_width); | |
5723 | wset_right_fringe_width (w, p->right_fringe_width); | |
2af3565e | 5724 | w->fringes_outside_margins = !NILP (p->fringes_outside_margins); |
e8c17b81 PE |
5725 | wset_scroll_bar_width (w, p->scroll_bar_width); |
5726 | wset_vertical_scroll_bar_type (w, p->vertical_scroll_bar_type); | |
5727 | wset_dedicated (w, p->dedicated); | |
5728 | wset_combination_limit (w, p->combination_limit); | |
6a6ee00d MR |
5729 | /* Restore any window parameters that have been saved. |
5730 | Parameters that have not been saved are left alone. */ | |
5731 | for (tem = p->window_parameters; CONSP (tem); tem = XCDR (tem)) | |
5732 | { | |
5733 | pers = XCAR (tem); | |
5734 | if (CONSP (pers)) | |
5735 | { | |
5736 | if (NILP (XCDR (pers))) | |
5737 | { | |
d3d50620 | 5738 | par = Fassq (XCAR (pers), w->window_parameters); |
6a6ee00d MR |
5739 | if (CONSP (par) && !NILP (XCDR (par))) |
5740 | /* Reset a parameter to nil if and only if it | |
5741 | has a non-nil association. Don't make new | |
5742 | associations. */ | |
5743 | Fsetcdr (par, Qnil); | |
5744 | } | |
5745 | else | |
5746 | /* Always restore a non-nil value. */ | |
5747 | Fset_window_parameter (window, XCAR (pers), XCDR (pers)); | |
5748 | } | |
5749 | } | |
5750 | ||
80b00b08 DA |
5751 | w->last_modified = 0; |
5752 | w->last_overlay_modified = 0; | |
fd482be5 JB |
5753 | |
5754 | /* Reinstall the saved buffer and pointers into it. */ | |
5755 | if (NILP (p->buffer)) | |
6198ccd0 | 5756 | /* An internal window. */ |
e8c17b81 | 5757 | wset_buffer (w, p->buffer); |
e578f381 | 5758 | else if (BUFFER_LIVE_P (XBUFFER (p->buffer))) |
6198ccd0 MR |
5759 | /* If saved buffer is alive, install it. */ |
5760 | { | |
e8c17b81 PE |
5761 | wset_buffer (w, p->buffer); |
5762 | w->start_at_line_beg = !NILP (p->start_at_line_beg); | |
5763 | set_marker_restricted (w->start, p->start, w->buffer); | |
5764 | set_marker_restricted (w->pointm, p->pointm, | |
5765 | w->buffer); | |
5766 | Fset_marker (BVAR (XBUFFER (w->buffer), mark), | |
5767 | p->mark, w->buffer); | |
5768 | ||
5769 | /* As documented in Fcurrent_window_configuration, don't | |
5770 | restore the location of point in the buffer which was | |
5771 | current when the window configuration was recorded. */ | |
5772 | if (!EQ (p->buffer, new_current_buffer) | |
5773 | && XBUFFER (p->buffer) == current_buffer) | |
5774 | Fgoto_char (w->pointm); | |
077288cf | 5775 | } |
d3d50620 | 5776 | else if (!NILP (w->buffer) |
e578f381 | 5777 | && BUFFER_LIVE_P (XBUFFER (w->buffer))) |
077288cf DA |
5778 | /* Keep window's old buffer; make sure the markers are |
5779 | real. */ | |
5780 | { | |
5781 | /* Set window markers at start of visible range. */ | |
d3d50620 DA |
5782 | if (XMARKER (w->start)->buffer == 0) |
5783 | set_marker_restricted (w->start, make_number (0), | |
5784 | w->buffer); | |
5785 | if (XMARKER (w->pointm)->buffer == 0) | |
f00af5b1 | 5786 | set_marker_restricted_both |
d3d50620 DA |
5787 | (w->pointm, w->buffer, |
5788 | BUF_PT (XBUFFER (w->buffer)), | |
5789 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
077288cf DA |
5790 | w->start_at_line_beg = 1; |
5791 | } | |
fd482be5 | 5792 | else |
6198ccd0 | 5793 | /* Window has no live buffer, get one. */ |
fd482be5 | 5794 | { |
6198ccd0 MR |
5795 | /* Get the buffer via other_buffer_safely in order to |
5796 | avoid showing an unimportant buffer and, if necessary, to | |
5797 | recreate *scratch* in the course (part of Juanma's bs-show | |
5798 | scenario from March 2011). */ | |
e8c17b81 | 5799 | wset_buffer (w, other_buffer_safely (Fcurrent_buffer ())); |
6198ccd0 MR |
5800 | /* This will set the markers to beginning of visible |
5801 | range. */ | |
d3d50620 DA |
5802 | set_marker_restricted (w->start, |
5803 | make_number (0), w->buffer); | |
5804 | set_marker_restricted (w->pointm, | |
5805 | make_number (0), w->buffer); | |
c98ff5dd | 5806 | w->start_at_line_beg = 1; |
d3d50620 | 5807 | if (!NILP (w->dedicated)) |
6198ccd0 MR |
5808 | /* Record this window as dead. */ |
5809 | dead_windows = Fcons (window, dead_windows); | |
5810 | /* Make sure window is no more dedicated. */ | |
e8c17b81 | 5811 | wset_dedicated (w, Qnil); |
7ab12479 JB |
5812 | } |
5813 | } | |
9ace597f | 5814 | |
f00af5b1 | 5815 | fset_root_window (f, data->root_window); |
a46c0153 RS |
5816 | /* Arrange *not* to restore point in the buffer that was |
5817 | current when the window configuration was saved. */ | |
d3d50620 DA |
5818 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
5819 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 5820 | make_number (old_point), |
d3d50620 | 5821 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 5822 | |
6198ccd0 MR |
5823 | /* In the following call to `select-window', prevent "swapping out |
5824 | point" in the old selected window using the buffer that has | |
5825 | been restored into it. We already swapped out that point from | |
5826 | that window's old buffer. */ | |
e6b84b30 | 5827 | select_window (data->current_window, Qnil, 1); |
d3d50620 | 5828 | BVAR (XBUFFER (XWINDOW (selected_window)->buffer), last_selected_window) |
396a830c | 5829 | = selected_window; |
7ab12479 | 5830 | |
db269683 | 5831 | if (NILP (data->focus_frame) |
017b2bad | 5832 | || (FRAMEP (data->focus_frame) |
db269683 JB |
5833 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
5834 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 5835 | |
fd482be5 | 5836 | /* Set the screen height to the value it had before this function. */ |
949cf20f KS |
5837 | if (previous_frame_lines != FRAME_LINES (f) |
5838 | || previous_frame_cols != FRAME_COLS (f)) | |
5839 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 5840 | 0, 0, 0); |
e3678b64 | 5841 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 5842 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
5843 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
5844 | make_number (0)); | |
4314246f | 5845 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5846 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
5847 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
5848 | make_number (0)); | |
4314246f | 5849 | #endif |
217f2871 | 5850 | #endif |
d2b35234 | 5851 | |
5500c422 | 5852 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
5853 | for (i = n = 0; i < n_leaf_windows; ++i) |
5854 | { | |
d3d50620 | 5855 | if (NILP (leaf_windows[i]->buffer)) |
c4280705 GM |
5856 | { |
5857 | /* Assert it's not reused as a combination. */ | |
d3d50620 DA |
5858 | eassert (NILP (leaf_windows[i]->hchild) |
5859 | && NILP (leaf_windows[i]->vchild)); | |
c4280705 | 5860 | free_window_matrices (leaf_windows[i]); |
c4280705 | 5861 | } |
d3d50620 | 5862 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) |
c4280705 GM |
5863 | ++n; |
5864 | } | |
177c0ea7 | 5865 | |
5500c422 | 5866 | adjust_glyphs (f); |
4d7e6e51 | 5867 | unblock_input (); |
756b6edc | 5868 | |
6198ccd0 MR |
5869 | /* Scan dead buffer windows. */ |
5870 | for (; CONSP (dead_windows); dead_windows = XCDR (dead_windows)) | |
5871 | { | |
5872 | window = XCAR (dead_windows); | |
5873 | if (WINDOW_LIVE_P (window) && !EQ (window, FRAME_ROOT_WINDOW (f))) | |
5874 | delete_deletable_window (window); | |
5875 | } | |
5876 | ||
478292ed RS |
5877 | /* Fselect_window will have made f the selected frame, so we |
5878 | reselect the proper frame here. Fhandle_switch_frame will change the | |
5879 | selected window too, but that doesn't make the call to | |
5880 | Fselect_window above totally superfluous; it still sets f's | |
5881 | selected window. */ | |
5882 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
c6932ecd | 5883 | do_switch_frame (data->selected_frame, 0, 0, Qnil); |
478292ed | 5884 | |
eeca6f6f | 5885 | run_window_configuration_change_hook (f); |
478292ed | 5886 | } |
bdc727bf JB |
5887 | |
5888 | if (!NILP (new_current_buffer)) | |
c4b6914d MR |
5889 | { |
5890 | Fset_buffer (new_current_buffer); | |
5891 | /* If the new current buffer doesn't appear in the selected | |
5892 | window, go to its old point (see bug#12208). */ | |
5893 | if (!EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) | |
5894 | Fgoto_char (make_number (old_point)); | |
5895 | } | |
bdc727bf | 5896 | |
478292ed | 5897 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 5898 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 5899 | |
3f8ab7bd | 5900 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
5901 | } |
5902 | ||
562dd5e9 | 5903 | |
be7f5545 MR |
5904 | /* Recursively delete all child windows reachable via the next, vchild, |
5905 | and hchild slots of WINDOW. */ | |
fd482be5 | 5906 | void |
be7f5545 | 5907 | delete_all_child_windows (Lisp_Object window) |
7ab12479 | 5908 | { |
fa8a67e6 MR |
5909 | register struct window *w; |
5910 | ||
5911 | w = XWINDOW (window); | |
5912 | ||
d3d50620 | 5913 | if (!NILP (w->next)) |
fa8a67e6 | 5914 | /* Delete WINDOW's siblings (we traverse postorderly). */ |
d3d50620 | 5915 | delete_all_child_windows (w->next); |
605be8af | 5916 | |
e8c17b81 PE |
5917 | /* See Fset_window_configuration for excuse. */ |
5918 | wset_total_lines (w, w->buffer); | |
605be8af | 5919 | |
d3d50620 | 5920 | if (!NILP (w->vchild)) |
fa8a67e6 | 5921 | { |
d3d50620 | 5922 | delete_all_child_windows (w->vchild); |
e8c17b81 | 5923 | wset_vchild (w, Qnil); |
fa8a67e6 | 5924 | } |
d3d50620 | 5925 | else if (!NILP (w->hchild)) |
fa8a67e6 | 5926 | { |
d3d50620 | 5927 | delete_all_child_windows (w->hchild); |
e8c17b81 | 5928 | wset_hchild (w, Qnil); |
fa8a67e6 | 5929 | } |
d3d50620 | 5930 | else if (!NILP (w->buffer)) |
fa8a67e6 MR |
5931 | { |
5932 | unshow_buffer (w); | |
d3d50620 DA |
5933 | unchain_marker (XMARKER (w->pointm)); |
5934 | unchain_marker (XMARKER (w->start)); | |
e8c17b81 | 5935 | wset_buffer (w, Qnil); |
fa8a67e6 | 5936 | } |
acf70840 GM |
5937 | |
5938 | Vwindow_list = Qnil; | |
7ab12479 JB |
5939 | } |
5940 | \f | |
5941 | static int | |
971de7fb | 5942 | count_windows (register struct window *window) |
7ab12479 JB |
5943 | { |
5944 | register int count = 1; | |
d3d50620 DA |
5945 | if (!NILP (window->next)) |
5946 | count += count_windows (XWINDOW (window->next)); | |
5947 | if (!NILP (window->vchild)) | |
5948 | count += count_windows (XWINDOW (window->vchild)); | |
5949 | if (!NILP (window->hchild)) | |
5950 | count += count_windows (XWINDOW (window->hchild)); | |
7ab12479 JB |
5951 | return count; |
5952 | } | |
5953 | ||
5500c422 | 5954 | |
177c0ea7 | 5955 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 | 5956 | Value is last index + 1. */ |
5500c422 | 5957 | static int |
971de7fb | 5958 | get_leaf_windows (struct window *w, struct window **flat, int i) |
5500c422 GM |
5959 | { |
5960 | while (w) | |
5961 | { | |
d3d50620 DA |
5962 | if (!NILP (w->hchild)) |
5963 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
5964 | else if (!NILP (w->vchild)) | |
5965 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 5966 | else |
5500c422 GM |
5967 | flat[i++] = w; |
5968 | ||
d3d50620 | 5969 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
5500c422 GM |
5970 | } |
5971 | ||
5972 | return i; | |
5973 | } | |
5974 | ||
5975 | ||
5976 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
c80e3b4a | 5977 | null if W's current matrix is invalid, so that no meaningful glyph |
5500c422 | 5978 | can be returned. */ |
5500c422 | 5979 | struct glyph * |
971de7fb | 5980 | get_phys_cursor_glyph (struct window *w) |
5500c422 GM |
5981 | { |
5982 | struct glyph_row *row; | |
5983 | struct glyph *glyph; | |
f8fe6f96 | 5984 | int hpos = w->phys_cursor.hpos; |
5500c422 | 5985 | |
f8fe6f96 EZ |
5986 | if (!(w->phys_cursor.vpos >= 0 |
5987 | && w->phys_cursor.vpos < w->current_matrix->nrows)) | |
5988 | return NULL; | |
5989 | ||
5990 | row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos); | |
5991 | if (!row->enabled_p) | |
5992 | return NULL; | |
5993 | ||
80b00b08 | 5994 | if (w->hscroll) |
f8fe6f96 EZ |
5995 | { |
5996 | /* When the window is hscrolled, cursor hpos can legitimately be | |
5997 | out of bounds, but we draw the cursor at the corresponding | |
5998 | window margin in that case. */ | |
5999 | if (!row->reversed_p && hpos < 0) | |
6000 | hpos = 0; | |
6001 | if (row->reversed_p && hpos >= row->used[TEXT_AREA]) | |
6002 | hpos = row->used[TEXT_AREA] - 1; | |
6003 | } | |
5500c422 | 6004 | |
f8fe6f96 EZ |
6005 | if (row->used[TEXT_AREA] > hpos |
6006 | && 0 <= hpos) | |
6007 | glyph = row->glyphs[TEXT_AREA] + hpos; | |
5500c422 GM |
6008 | else |
6009 | glyph = NULL; | |
6010 | ||
6011 | return glyph; | |
6012 | } | |
6013 | ||
6014 | ||
7ab12479 | 6015 | static int |
971de7fb | 6016 | save_window_save (Lisp_Object window, struct Lisp_Vector *vector, int i) |
7ab12479 JB |
6017 | { |
6018 | register struct saved_window *p; | |
6019 | register struct window *w; | |
6a6ee00d | 6020 | register Lisp_Object tem, pers, par; |
7ab12479 | 6021 | |
d3d50620 | 6022 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
6023 | { |
6024 | p = SAVED_WINDOW_N (vector, i); | |
6025 | w = XWINDOW (window); | |
6026 | ||
e8c17b81 | 6027 | wset_temslot (w, make_number (i)); i++; |
7ab12479 | 6028 | p->window = window; |
d3d50620 DA |
6029 | p->buffer = w->buffer; |
6030 | p->left_col = w->left_col; | |
6031 | p->top_line = w->top_line; | |
6032 | p->total_cols = w->total_cols; | |
6033 | p->total_lines = w->total_lines; | |
6034 | p->normal_cols = w->normal_cols; | |
6035 | p->normal_lines = w->normal_lines; | |
80b00b08 DA |
6036 | XSETFASTINT (p->hscroll, w->hscroll); |
6037 | XSETFASTINT (p->min_hscroll, w->min_hscroll); | |
d3d50620 DA |
6038 | p->display_table = w->display_table; |
6039 | p->left_margin_cols = w->left_margin_cols; | |
6040 | p->right_margin_cols = w->right_margin_cols; | |
6041 | p->left_fringe_width = w->left_fringe_width; | |
6042 | p->right_fringe_width = w->right_fringe_width; | |
2af3565e | 6043 | p->fringes_outside_margins = w->fringes_outside_margins ? Qt : Qnil; |
d3d50620 DA |
6044 | p->scroll_bar_width = w->scroll_bar_width; |
6045 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6046 | p->dedicated = w->dedicated; | |
6047 | p->combination_limit = w->combination_limit; | |
6a6ee00d MR |
6048 | p->window_parameters = Qnil; |
6049 | ||
6050 | if (!NILP (Vwindow_persistent_parameters)) | |
6051 | { | |
6052 | /* Run cycle detection on Vwindow_persistent_parameters. */ | |
6053 | Lisp_Object tortoise, hare; | |
6054 | ||
6055 | hare = tortoise = Vwindow_persistent_parameters; | |
6056 | while (CONSP (hare)) | |
6057 | { | |
6058 | hare = XCDR (hare); | |
6059 | if (!CONSP (hare)) | |
6060 | break; | |
6061 | ||
6062 | hare = XCDR (hare); | |
6063 | tortoise = XCDR (tortoise); | |
6064 | ||
6065 | if (EQ (hare, tortoise)) | |
6066 | /* Reset Vwindow_persistent_parameters to Qnil. */ | |
6067 | { | |
6068 | Vwindow_persistent_parameters = Qnil; | |
6069 | break; | |
6070 | } | |
6071 | } | |
6072 | ||
6073 | for (tem = Vwindow_persistent_parameters; CONSP (tem); | |
6074 | tem = XCDR (tem)) | |
6075 | { | |
6076 | pers = XCAR (tem); | |
34a02f46 MR |
6077 | /* Save values for persistent window parameters. */ |
6078 | if (CONSP (pers) && !NILP (XCDR (pers))) | |
6a6ee00d | 6079 | { |
d3d50620 | 6080 | par = Fassq (XCAR (pers), w->window_parameters); |
6a6ee00d MR |
6081 | if (NILP (par)) |
6082 | /* If the window has no value for the parameter, | |
6083 | make one. */ | |
6084 | p->window_parameters = Fcons (Fcons (XCAR (pers), Qnil), | |
6085 | p->window_parameters); | |
6086 | else | |
6087 | /* If the window has a value for the parameter, | |
6088 | save it. */ | |
6089 | p->window_parameters = Fcons (Fcons (XCAR (par), | |
6090 | XCDR (par)), | |
6091 | p->window_parameters); | |
6092 | } | |
6093 | } | |
6094 | } | |
6095 | ||
d3d50620 | 6096 | if (!NILP (w->buffer)) |
7ab12479 | 6097 | { |
6a6ee00d MR |
6098 | /* Save w's value of point in the window configuration. If w |
6099 | is the selected window, then get the value of point from | |
6100 | the buffer; pointm is garbage in the selected window. */ | |
7ab12479 | 6101 | if (EQ (window, selected_window)) |
d3d50620 DA |
6102 | p->pointm = build_marker (XBUFFER (w->buffer), |
6103 | BUF_PT (XBUFFER (w->buffer)), | |
6104 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 | 6105 | else |
d3d50620 | 6106 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
de8c03dc SM |
6107 | XMARKER (p->pointm)->insertion_type |
6108 | = !NILP (Vwindow_point_insertion_type); | |
7ab12479 | 6109 | |
d3d50620 | 6110 | p->start = Fcopy_marker (w->start, Qnil); |
c98ff5dd | 6111 | p->start_at_line_beg = w->start_at_line_beg ? Qt : Qnil; |
7ab12479 | 6112 | |
d3d50620 | 6113 | tem = BVAR (XBUFFER (w->buffer), mark); |
eeb82665 | 6114 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6115 | } |
6116 | else | |
6117 | { | |
6118 | p->pointm = Qnil; | |
6119 | p->start = Qnil; | |
6120 | p->mark = Qnil; | |
6121 | p->start_at_line_beg = Qnil; | |
6122 | } | |
6123 | ||
d3d50620 | 6124 | if (NILP (w->parent)) |
7ab12479 JB |
6125 | p->parent = Qnil; |
6126 | else | |
d3d50620 | 6127 | p->parent = XWINDOW (w->parent)->temslot; |
7ab12479 | 6128 | |
d3d50620 | 6129 | if (NILP (w->prev)) |
7ab12479 JB |
6130 | p->prev = Qnil; |
6131 | else | |
d3d50620 | 6132 | p->prev = XWINDOW (w->prev)->temslot; |
7ab12479 | 6133 | |
d3d50620 DA |
6134 | if (!NILP (w->vchild)) |
6135 | i = save_window_save (w->vchild, vector, i); | |
6136 | if (!NILP (w->hchild)) | |
6137 | i = save_window_save (w->hchild, vector, i); | |
7ab12479 JB |
6138 | } |
6139 | ||
6140 | return i; | |
6141 | } | |
6142 | ||
a7ca3326 | 6143 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6144 | Scurrent_window_configuration, 0, 1, 0, |
6145 | doc: /* Return an object representing the current window configuration of FRAME. | |
6146 | If FRAME is nil or omitted, use the selected frame. | |
6147 | This describes the number of windows, their sizes and current buffers, | |
6148 | and for each displayed buffer, where display starts, and the positions of | |
6149 | point and mark. An exception is made for point in the current buffer: | |
6150 | its value is -not- saved. | |
6151 | This also records the currently selected frame, and FRAME's focus | |
34a02f46 MR |
6152 | redirection (see `redirect-frame-focus'). The variable |
6153 | `window-persistent-parameters' specifies which window parameters are | |
6154 | saved by this function. */) | |
5842a27b | 6155 | (Lisp_Object frame) |
7ab12479 JB |
6156 | { |
6157 | register Lisp_Object tem; | |
6158 | register int n_windows; | |
6159 | register struct save_window_data *data; | |
6160 | register int i; | |
44fa5b1e | 6161 | FRAME_PTR f; |
43bad991 | 6162 | |
44fa5b1e | 6163 | if (NILP (frame)) |
1ae1a37d | 6164 | frame = selected_frame; |
b7826503 | 6165 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 6166 | f = XFRAME (frame); |
7ab12479 | 6167 | |
44fa5b1e | 6168 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
6169 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
6170 | PVEC_WINDOW_CONFIGURATION); | |
6171 | ||
6172 | data->frame_cols = FRAME_COLS (f); | |
6173 | data->frame_lines = FRAME_LINES (f); | |
6174 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
6175 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 6176 | data->selected_frame = selected_frame; |
44fa5b1e | 6177 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6178 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6179 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6180 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6181 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6182 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
7ab12479 JB |
6183 | tem = Fmake_vector (make_number (n_windows), Qnil); |
6184 | data->saved_windows = tem; | |
6185 | for (i = 0; i < n_windows; i++) | |
28be1ada DA |
6186 | ASET (tem, i, |
6187 | Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil)); | |
a1d58e5b | 6188 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6189 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6190 | return (tem); |
6191 | } | |
5500c422 GM |
6192 | \f |
6193 | /*********************************************************************** | |
6194 | Marginal Areas | |
6195 | ***********************************************************************/ | |
6196 | ||
6197 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6198 | 2, 3, 0, |
fdb82f93 | 6199 | doc: /* Set width of marginal areas of window WINDOW. |
52162052 MR |
6200 | WINDOW must be a live window and defaults to the selected one. |
6201 | ||
6b61353c KH |
6202 | Second arg LEFT-WIDTH specifies the number of character cells to |
6203 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6204 | does the same for the right marginal area. A nil width parameter | |
6205 | means no margin. */) | |
5842a27b | 6206 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width) |
5500c422 | 6207 | { |
52162052 | 6208 | struct window *w = decode_live_window (window); |
5500c422 | 6209 | |
6b61353c KH |
6210 | /* Translate negative or zero widths to nil. |
6211 | Margins that are too wide have to be checked elsewhere. */ | |
949cf20f | 6212 | |
c10ce82e | 6213 | if (!NILP (left_width)) |
6b61353c | 6214 | { |
c10ce82e JB |
6215 | CHECK_NUMBER (left_width); |
6216 | if (XINT (left_width) <= 0) | |
6217 | left_width = Qnil; | |
6b61353c | 6218 | } |
5500c422 | 6219 | |
c10ce82e | 6220 | if (!NILP (right_width)) |
6b61353c | 6221 | { |
c10ce82e JB |
6222 | CHECK_NUMBER (right_width); |
6223 | if (XINT (right_width) <= 0) | |
6224 | right_width = Qnil; | |
6b61353c | 6225 | } |
5500c422 | 6226 | |
d3d50620 DA |
6227 | if (!EQ (w->left_margin_cols, left_width) |
6228 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6229 | { |
e8c17b81 PE |
6230 | wset_left_margin_cols (w, left_width); |
6231 | wset_right_margin_cols (w, right_width); | |
949cf20f KS |
6232 | |
6233 | adjust_window_margins (w); | |
6234 | ||
6235 | ++windows_or_buffers_changed; | |
6236 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6237 | } | |
5500c422 | 6238 | |
5500c422 GM |
6239 | return Qnil; |
6240 | } | |
6241 | ||
6242 | ||
6243 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6244 | 0, 1, 0, | |
fdb82f93 | 6245 | doc: /* Get width of marginal areas of window WINDOW. |
52162052 MR |
6246 | WINDOW must be a live window and defaults to the selected one. |
6247 | ||
fdb82f93 PJ |
6248 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). |
6249 | If a marginal area does not exist, its width will be returned | |
6250 | as nil. */) | |
5842a27b | 6251 | (Lisp_Object window) |
5500c422 | 6252 | { |
52162052 | 6253 | struct window *w = decode_live_window (window); |
d3d50620 | 6254 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
949cf20f KS |
6255 | } |
6256 | ||
6257 | ||
6258 | \f | |
6259 | /*********************************************************************** | |
6260 | Fringes | |
6261 | ***********************************************************************/ | |
6262 | ||
a7ca3326 | 6263 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, |
949cf20f | 6264 | 2, 4, 0, |
6b61353c | 6265 | doc: /* Set the fringe widths of window WINDOW. |
52162052 MR |
6266 | WINDOW must be a live window and defaults to the selected one. |
6267 | ||
6b61353c KH |
6268 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for |
6269 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6270 | fringe width. If a fringe width arg is nil, that means to use the | |
6271 | frame's default fringe width. Default fringe widths can be set with | |
6272 | the command `set-fringe-style'. | |
6273 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6274 | outside of the display margins. By default, fringes are drawn between | |
6275 | display marginal areas and the text area. */) | |
5842a27b | 6276 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width, Lisp_Object outside_margins) |
949cf20f | 6277 | { |
52162052 | 6278 | struct window *w = decode_live_window (window); |
2af3565e | 6279 | int outside = !NILP (outside_margins); |
949cf20f | 6280 | |
c10ce82e JB |
6281 | if (!NILP (left_width)) |
6282 | CHECK_NATNUM (left_width); | |
6283 | if (!NILP (right_width)) | |
6284 | CHECK_NATNUM (right_width); | |
5a857365 | 6285 | |
017e297e | 6286 | /* Do nothing on a tty. */ |
d46c6df5 | 6287 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
d3d50620 DA |
6288 | && (!EQ (w->left_fringe_width, left_width) |
6289 | || !EQ (w->right_fringe_width, right_width) | |
2af3565e | 6290 | || w->fringes_outside_margins != outside)) |
949cf20f | 6291 | { |
e8c17b81 PE |
6292 | wset_left_fringe_width (w, left_width); |
6293 | wset_right_fringe_width (w, right_width); | |
2af3565e | 6294 | w->fringes_outside_margins = outside; |
949cf20f KS |
6295 | |
6296 | adjust_window_margins (w); | |
6297 | ||
6298 | clear_glyph_matrix (w->current_matrix); | |
e8c17b81 | 6299 | wset_window_end_valid (w, Qnil); |
949cf20f KS |
6300 | |
6301 | ++windows_or_buffers_changed; | |
6302 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6303 | } | |
6304 | ||
6305 | return Qnil; | |
6306 | } | |
6307 | ||
6308 | ||
6309 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6310 | 0, 1, 0, | |
6311 | doc: /* Get width of fringes of window WINDOW. | |
52162052 MR |
6312 | WINDOW must be a live window and defaults to the selected one. |
6313 | ||
6b61353c | 6314 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
5842a27b | 6315 | (Lisp_Object window) |
949cf20f | 6316 | { |
52162052 | 6317 | struct window *w = decode_live_window (window); |
d46c6df5 | 6318 | |
949cf20f KS |
6319 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6320 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
d46c6df5 NR |
6321 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
6322 | ? Qt : Qnil), Qnil))); | |
949cf20f KS |
6323 | } |
6324 | ||
6325 | ||
6326 | \f | |
6327 | /*********************************************************************** | |
6328 | Scroll bars | |
6329 | ***********************************************************************/ | |
6330 | ||
a7ca3326 | 6331 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, |
16a97296 | 6332 | Sset_window_scroll_bars, 2, 4, 0, |
949cf20f | 6333 | doc: /* Set width and type of scroll bars of window WINDOW. |
52162052 MR |
6334 | WINDOW must be a live window and defaults to the selected one. |
6335 | ||
949cf20f KS |
6336 | Second parameter WIDTH specifies the pixel width for the scroll bar; |
6337 | this is automatically adjusted to a multiple of the frame column width. | |
6338 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6339 | bar: left, right, or nil. | |
6b61353c | 6340 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6341 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6342 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
5842a27b | 6343 | (Lisp_Object window, Lisp_Object width, Lisp_Object vertical_type, Lisp_Object horizontal_type) |
949cf20f | 6344 | { |
52162052 | 6345 | struct window *w = decode_live_window (window); |
949cf20f KS |
6346 | |
6347 | if (!NILP (width)) | |
0f8fe9a2 | 6348 | { |
af5a5a98 | 6349 | CHECK_RANGED_INTEGER (width, 0, INT_MAX); |
949cf20f | 6350 | |
0f8fe9a2 SM |
6351 | if (XINT (width) == 0) |
6352 | vertical_type = Qnil; | |
6353 | } | |
949cf20f | 6354 | |
413a79ad | 6355 | if (!(NILP (vertical_type) |
0cc1039f | 6356 | || EQ (vertical_type, Qleft) |
6b61353c KH |
6357 | || EQ (vertical_type, Qright) |
6358 | || EQ (vertical_type, Qt))) | |
6359 | error ("Invalid type of vertical scroll bar"); | |
6360 | ||
d3d50620 DA |
6361 | if (!EQ (w->scroll_bar_width, width) |
6362 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
949cf20f | 6363 | { |
e8c17b81 PE |
6364 | wset_scroll_bar_width (w, width); |
6365 | wset_vertical_scroll_bar_type (w, vertical_type); | |
949cf20f KS |
6366 | |
6367 | adjust_window_margins (w); | |
6368 | ||
6369 | clear_glyph_matrix (w->current_matrix); | |
e8c17b81 | 6370 | wset_window_end_valid (w, Qnil); |
949cf20f KS |
6371 | |
6372 | ++windows_or_buffers_changed; | |
6373 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6374 | } | |
6375 | ||
6376 | return Qnil; | |
6377 | } | |
6378 | ||
6379 | ||
6380 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6381 | 0, 1, 0, | |
6382 | doc: /* Get width and type of scroll bars of window WINDOW. | |
52162052 MR |
6383 | WINDOW must be a live window and defaults to the selected one. |
6384 | ||
6b61353c KH |
6385 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6386 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6387 | value. */) | |
5842a27b | 6388 | (Lisp_Object window) |
949cf20f | 6389 | { |
52162052 | 6390 | struct window *w = decode_live_window (window); |
949cf20f KS |
6391 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) |
6392 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6393 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
6394 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
d3d50620 | 6395 | Fcons (w->vertical_scroll_bar_type, |
949cf20f | 6396 | Fcons (Qnil, Qnil)))); |
5500c422 GM |
6397 | } |
6398 | ||
6399 | ||
7ab12479 | 6400 | \f |
5500c422 GM |
6401 | /*********************************************************************** |
6402 | Smooth scrolling | |
6403 | ***********************************************************************/ | |
6404 | ||
0cc1039f | 6405 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 | 6406 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
49745b39 | 6407 | If WINDOW is omitted or nil, it defaults to the selected window. |
0cc1039f | 6408 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6409 | optional second arg PIXELS-P means value is measured in pixels. */) |
5842a27b | 6410 | (Lisp_Object window, Lisp_Object pixels_p) |
5500c422 | 6411 | { |
47004952 | 6412 | Lisp_Object result; |
1f76f6f5 MR |
6413 | struct window *w = decode_live_window (window); |
6414 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 6415 | |
5500c422 | 6416 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6417 | result = (NILP (pixels_p) |
6418 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6419 | : make_number (-w->vscroll)); | |
5500c422 | 6420 | else |
47004952 GM |
6421 | result = make_number (0); |
6422 | return result; | |
5500c422 GM |
6423 | } |
6424 | ||
6425 | ||
6426 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6427 | 2, 3, 0, |
fdb82f93 | 6428 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6429 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6430 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6431 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6432 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6433 | corresponds to an integral number of pixels. The return value is the | |
6434 | result of this rounding. | |
6435 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
5842a27b | 6436 | (Lisp_Object window, Lisp_Object vscroll, Lisp_Object pixels_p) |
5500c422 | 6437 | { |
1f76f6f5 MR |
6438 | struct window *w = decode_live_window (window); |
6439 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 6440 | |
b7826503 | 6441 | CHECK_NUMBER_OR_FLOAT (vscroll); |
177c0ea7 | 6442 | |
5500c422 GM |
6443 | if (FRAME_WINDOW_P (f)) |
6444 | { | |
6445 | int old_dy = w->vscroll; | |
177c0ea7 | 6446 | |
0cc1039f KS |
6447 | w->vscroll = - (NILP (pixels_p) |
6448 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6449 | : XFLOATINT (vscroll)); | |
47004952 | 6450 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6451 | |
e56263e5 KS |
6452 | if (w->vscroll != old_dy) |
6453 | { | |
6454 | /* Adjust glyph matrix of the frame if the virtual display | |
6455 | area becomes larger than before. */ | |
6456 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
6457 | adjust_glyphs (f); | |
177c0ea7 | 6458 | |
e56263e5 | 6459 | /* Prevent redisplay shortcuts. */ |
d3d50620 | 6460 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
e56263e5 | 6461 | } |
5500c422 | 6462 | } |
177c0ea7 | 6463 | |
0cc1039f | 6464 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 6465 | } |
177c0ea7 | 6466 | |
7bbb5782 GM |
6467 | \f |
6468 | /* Call FN for all leaf windows on frame F. FN is called with the | |
6469 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 6470 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 | 6471 | |
2f7c71a1 AS |
6472 | static void |
6473 | foreach_window (struct frame *f, int (*fn) (struct window *, void *), | |
6474 | void *user_data) | |
7bbb5782 | 6475 | { |
56f2de10 | 6476 | /* delete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
76fb556f YM |
6477 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) |
6478 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
6479 | } |
6480 | ||
6481 | ||
6482 | /* Helper function for foreach_window. Call FN for all leaf windows | |
6483 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 6484 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 6485 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 6486 | |
67492200 | 6487 | static int |
971de7fb | 6488 | foreach_window_1 (struct window *w, int (*fn) (struct window *, void *), void *user_data) |
7bbb5782 | 6489 | { |
67492200 | 6490 | int cont; |
177c0ea7 | 6491 | |
67492200 | 6492 | for (cont = 1; w && cont;) |
7bbb5782 | 6493 | { |
d3d50620 DA |
6494 | if (!NILP (w->hchild)) |
6495 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); | |
6496 | else if (!NILP (w->vchild)) | |
6497 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); | |
177c0ea7 | 6498 | else |
0f532a9a | 6499 | cont = fn (w, user_data); |
177c0ea7 | 6500 | |
d3d50620 | 6501 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
7bbb5782 | 6502 | } |
67492200 GM |
6503 | |
6504 | return cont; | |
7bbb5782 GM |
6505 | } |
6506 | ||
6507 | ||
6d194a45 | 6508 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 6509 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
6510 | the window start. */ |
6511 | ||
67492200 | 6512 | static int |
971de7fb | 6513 | freeze_window_start (struct window *w, void *freeze_p) |
7bbb5782 | 6514 | { |
08c1d235 SM |
6515 | if (MINI_WINDOW_P (w) |
6516 | || (WINDOWP (selected_window) /* Can be nil in corner cases. */ | |
6517 | && (w == XWINDOW (selected_window) | |
6518 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
6519 | && ! NILP (Vminibuf_scroll_window) | |
6520 | && w == XWINDOW (Vminibuf_scroll_window))))) | |
f95464e4 | 6521 | freeze_p = NULL; |
177c0ea7 | 6522 | |
f95464e4 | 6523 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 6524 | return 1; |
7bbb5782 GM |
6525 | } |
6526 | ||
6527 | ||
6528 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
6529 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
6530 | means freeze the window start. */ | |
6531 | ||
6532 | void | |
971de7fb | 6533 | freeze_window_starts (struct frame *f, int freeze_p) |
7bbb5782 | 6534 | { |
cbccabec | 6535 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 6536 | } |
5500c422 GM |
6537 | |
6538 | \f | |
6539 | /*********************************************************************** | |
6540 | Initialization | |
6541 | ***********************************************************************/ | |
6542 | ||
6198ccd0 MR |
6543 | /* Return 1 if window configurations CONFIGURATION1 and CONFIGURATION2 |
6544 | describe the same state of affairs. This is used by Fequal. | |
6545 | ||
f75d7a91 | 6546 | IGNORE_POSITIONS means ignore non-matching scroll positions |
6198ccd0 MR |
6547 | and the like. |
6548 | ||
e4769531 | 6549 | This ignores a couple of things like the dedication status of |
b6f67890 MR |
6550 | window, combination_limit and the like. This might have to be |
6551 | fixed. */ | |
cbff28e8 | 6552 | |
f75d7a91 PE |
6553 | bool |
6554 | compare_window_configurations (Lisp_Object configuration1, | |
6555 | Lisp_Object configuration2, | |
6556 | bool ignore_positions) | |
cbff28e8 RS |
6557 | { |
6558 | register struct save_window_data *d1, *d2; | |
6198ccd0 | 6559 | struct Lisp_Vector *sws1, *sws2; |
71f02bc5 | 6560 | ptrdiff_t i; |
cbff28e8 | 6561 | |
6198ccd0 MR |
6562 | CHECK_WINDOW_CONFIGURATION (configuration1); |
6563 | CHECK_WINDOW_CONFIGURATION (configuration2); | |
6564 | ||
6565 | d1 = (struct save_window_data *) XVECTOR (configuration1); | |
6566 | d2 = (struct save_window_data *) XVECTOR (configuration2); | |
6567 | sws1 = XVECTOR (d1->saved_windows); | |
6568 | sws2 = XVECTOR (d2->saved_windows); | |
6569 | ||
6570 | /* Frame settings must match. */ | |
6571 | if (d1->frame_cols != d2->frame_cols | |
6572 | || d1->frame_lines != d2->frame_lines | |
6573 | || d1->frame_menu_bar_lines != d2->frame_menu_bar_lines | |
6574 | || !EQ (d1->selected_frame, d2->selected_frame) | |
6575 | || !EQ (d1->current_buffer, d2->current_buffer) | |
6576 | || (!ignore_positions | |
6577 | && (!EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window) | |
6578 | || !EQ (d1->minibuf_selected_window, d2->minibuf_selected_window))) | |
6579 | || !EQ (d1->focus_frame, d2->focus_frame) | |
6580 | /* Verify that the two configurations have the same number of windows. */ | |
6581 | || sws1->header.size != sws2->header.size) | |
cbff28e8 | 6582 | return 0; |
cbff28e8 | 6583 | |
6198ccd0 | 6584 | for (i = 0; i < sws1->header.size; i++) |
cbff28e8 | 6585 | { |
6198ccd0 | 6586 | struct saved_window *sw1, *sw2; |
cbff28e8 | 6587 | |
6198ccd0 MR |
6588 | sw1 = SAVED_WINDOW_N (sws1, i); |
6589 | sw2 = SAVED_WINDOW_N (sws2, i); | |
6590 | ||
6591 | if ( | |
6592 | /* The "current" windows in the two configurations must | |
6593 | correspond to each other. */ | |
6594 | EQ (d1->current_window, sw1->window) | |
6595 | != EQ (d2->current_window, sw2->window) | |
6596 | /* Windows' buffers must match. */ | |
6597 | || !EQ (sw1->buffer, sw2->buffer) | |
6598 | || !EQ (sw1->left_col, sw2->left_col) | |
6599 | || !EQ (sw1->top_line, sw2->top_line) | |
6600 | || !EQ (sw1->total_cols, sw2->total_cols) | |
6601 | || !EQ (sw1->total_lines, sw2->total_lines) | |
6602 | || !EQ (sw1->display_table, sw2->display_table) | |
6603 | /* The next two disjuncts check the window structure for | |
6604 | equality. */ | |
6605 | || !EQ (sw1->parent, sw2->parent) | |
6606 | || !EQ (sw1->prev, sw2->prev) | |
6607 | || (!ignore_positions | |
6608 | && (!EQ (sw1->hscroll, sw2->hscroll) | |
6609 | || !EQ (sw1->min_hscroll, sw2->min_hscroll) | |
6610 | || !EQ (sw1->start_at_line_beg, sw2->start_at_line_beg) | |
6611 | || NILP (Fequal (sw1->start, sw2->start)) | |
6612 | || NILP (Fequal (sw1->pointm, sw2->pointm)) | |
6613 | || NILP (Fequal (sw1->mark, sw2->mark)))) | |
6614 | || !EQ (sw1->left_margin_cols, sw2->left_margin_cols) | |
6615 | || !EQ (sw1->right_margin_cols, sw2->right_margin_cols) | |
6616 | || !EQ (sw1->left_fringe_width, sw2->left_fringe_width) | |
6617 | || !EQ (sw1->right_fringe_width, sw2->right_fringe_width) | |
6618 | || !EQ (sw1->fringes_outside_margins, sw2->fringes_outside_margins) | |
6619 | || !EQ (sw1->scroll_bar_width, sw2->scroll_bar_width) | |
6620 | || !EQ (sw1->vertical_scroll_bar_type, sw2->vertical_scroll_bar_type)) | |
949cf20f | 6621 | return 0; |
cbff28e8 RS |
6622 | } |
6623 | ||
6624 | return 1; | |
6625 | } | |
2f8274be RS |
6626 | |
6627 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
6628 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
6629 | doc: /* Compare two window configurations as regards the structure of windows. |
6630 | This function ignores details such as the values of point and mark | |
6631 | and scrolling positions. */) | |
5842a27b | 6632 | (Lisp_Object x, Lisp_Object y) |
2f8274be RS |
6633 | { |
6634 | if (compare_window_configurations (x, y, 1)) | |
6635 | return Qt; | |
6636 | return Qnil; | |
6637 | } | |
cbff28e8 | 6638 | \f |
dfcf069d | 6639 | void |
971de7fb | 6640 | init_window_once (void) |
7ab12479 | 6641 | { |
3224dac1 | 6642 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
6643 | XSETFRAME (selected_frame, f); |
6644 | Vterminal_frame = selected_frame; | |
e69b0960 DA |
6645 | minibuf_window = f->minibuffer_window; |
6646 | selected_window = f->selected_window; | |
1ae1a37d | 6647 | last_nonminibuf_frame = f; |
5b03d3c0 RS |
6648 | |
6649 | window_initialized = 1; | |
7ab12479 JB |
6650 | } |
6651 | ||
67492200 | 6652 | void |
971de7fb | 6653 | init_window (void) |
67492200 GM |
6654 | { |
6655 | Vwindow_list = Qnil; | |
6656 | } | |
6657 | ||
dfcf069d | 6658 | void |
971de7fb | 6659 | syms_of_window (void) |
7ab12479 | 6660 | { |
cd3520a4 JB |
6661 | DEFSYM (Qscroll_up, "scroll-up"); |
6662 | DEFSYM (Qscroll_down, "scroll-down"); | |
6663 | DEFSYM (Qscroll_command, "scroll-command"); | |
a4b000fb JL |
6664 | |
6665 | Fput (Qscroll_up, Qscroll_command, Qt); | |
6666 | Fput (Qscroll_down, Qscroll_command, Qt); | |
6667 | ||
cd3520a4 JB |
6668 | DEFSYM (Qwindow_configuration_change_hook, "window-configuration-change-hook"); |
6669 | DEFSYM (Qwindowp, "windowp"); | |
6670 | DEFSYM (Qwindow_configuration_p, "window-configuration-p"); | |
6671 | DEFSYM (Qwindow_live_p, "window-live-p"); | |
52162052 | 6672 | DEFSYM (Qwindow_valid_p, "window-valid-p"); |
cd3520a4 JB |
6673 | DEFSYM (Qwindow_deletable_p, "window-deletable-p"); |
6674 | DEFSYM (Qdelete_window, "delete-window"); | |
5386012d MR |
6675 | DEFSYM (Qwindow_resize_root_window, "window--resize-root-window"); |
6676 | DEFSYM (Qwindow_resize_root_window_vertically, "window--resize-root-window-vertically"); | |
cd3520a4 JB |
6677 | DEFSYM (Qsafe, "safe"); |
6678 | DEFSYM (Qdisplay_buffer, "display-buffer"); | |
6679 | DEFSYM (Qreplace_buffer_in_windows, "replace-buffer-in-windows"); | |
6680 | DEFSYM (Qrecord_window_buffer, "record-window-buffer"); | |
6681 | DEFSYM (Qget_mru_window, "get-mru-window"); | |
5938d519 | 6682 | DEFSYM (Qwindow_size, "window-size"); |
cd3520a4 JB |
6683 | DEFSYM (Qtemp_buffer_show_hook, "temp-buffer-show-hook"); |
6684 | DEFSYM (Qabove, "above"); | |
6685 | DEFSYM (Qbelow, "below"); | |
6a6ee00d | 6686 | DEFSYM (Qclone_of, "clone-of"); |
b9e809c2 | 6687 | |
67492200 | 6688 | staticpro (&Vwindow_list); |
8bfb170b KS |
6689 | |
6690 | minibuf_selected_window = Qnil; | |
3dbab091 | 6691 | staticpro (&minibuf_selected_window); |
67492200 | 6692 | |
c876b227 | 6693 | window_scroll_pixel_based_preserve_x = -1; |
66fe93d1 | 6694 | window_scroll_pixel_based_preserve_y = -1; |
c876b227 SM |
6695 | window_scroll_preserve_hpos = -1; |
6696 | window_scroll_preserve_vpos = -1; | |
66d43aea | 6697 | |
29208e82 | 6698 | DEFVAR_LISP ("temp-buffer-show-function", Vtemp_buffer_show_function, |
fdb82f93 PJ |
6699 | doc: /* Non-nil means call as function to display a help buffer. |
6700 | The function is called with one argument, the buffer to be displayed. | |
6701 | Used by `with-output-to-temp-buffer'. | |
6702 | If this function is used, then it must do the entire job of showing | |
6703 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 | 6704 | Vtemp_buffer_show_function = Qnil; |
e10ac9f1 | 6705 | |
29208e82 | 6706 | DEFVAR_LISP ("minibuffer-scroll-window", Vminibuf_scroll_window, |
fdb82f93 | 6707 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
6708 | Vminibuf_scroll_window = Qnil; |
6709 | ||
29208e82 | 6710 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", mode_line_in_non_selected_windows, |
26124d5e | 6711 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
6712 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
6713 | is displayed in the `mode-line' face. */); | |
6714 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 6715 | |
29208e82 | 6716 | DEFVAR_LISP ("other-window-scroll-buffer", Vother_window_scroll_buffer, |
fdb82f93 | 6717 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
6718 | Vother_window_scroll_buffer = Qnil; |
6719 | ||
29208e82 | 6720 | DEFVAR_BOOL ("auto-window-vscroll", auto_window_vscroll_p, |
e10ac9f1 | 6721 | doc: /* Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); |
e56263e5 KS |
6722 | auto_window_vscroll_p = 1; |
6723 | ||
29208e82 | 6724 | DEFVAR_INT ("next-screen-context-lines", next_screen_context_lines, |
e10ac9f1 | 6725 | doc: /* Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
6726 | next_screen_context_lines = 2; |
6727 | ||
5500c422 | 6728 | DEFVAR_LISP ("scroll-preserve-screen-position", |
29208e82 | 6729 | Vscroll_preserve_screen_position, |
e10ac9f1 | 6730 | doc: /* Controls if scroll commands move point to keep its screen position unchanged. |
bdf4ec93 RS |
6731 | A value of nil means point does not keep its screen position except |
6732 | at the scroll margin or window boundary respectively. | |
6733 | A value of t means point keeps its screen position if the scroll | |
6734 | command moved it vertically out of the window, e.g. when scrolling | |
6735 | by full screens. | |
9013a7f8 | 6736 | Any other value means point always keeps its screen position. |
a4b000fb JL |
6737 | Scroll commands should have the `scroll-command' property |
6738 | on their symbols to be controlled by this variable. */); | |
5500c422 | 6739 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 6740 | |
29208e82 | 6741 | DEFVAR_LISP ("window-point-insertion-type", Vwindow_point_insertion_type, |
a1562258 SM |
6742 | doc: /* Type of marker to use for `window-point'. */); |
6743 | Vwindow_point_insertion_type = Qnil; | |
6744 | ||
543f5fb1 | 6745 | DEFVAR_LISP ("window-configuration-change-hook", |
29208e82 | 6746 | Vwindow_configuration_change_hook, |
fdb82f93 | 6747 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
6748 | The buffer-local part is run once per window, with the relevant window |
6749 | selected; while the global part is run only once for the modified frame, | |
6750 | with the relevant frame selected. */); | |
543f5fb1 RS |
6751 | Vwindow_configuration_change_hook = Qnil; |
6752 | ||
29208e82 | 6753 | DEFVAR_LISP ("recenter-redisplay", Vrecenter_redisplay, |
61d4b438 MR |
6754 | doc: /* Non-nil means `recenter' redraws entire frame. |
6755 | If this option is non-nil, then the `recenter' command with a nil | |
6756 | argument will redraw the entire frame; the special value `tty' causes | |
6757 | the frame to be redrawn only if it is a tty frame. */); | |
666e158e MB |
6758 | Vrecenter_redisplay = Qtty; |
6759 | ||
a0c2d0ae | 6760 | DEFVAR_LISP ("window-combination-resize", Vwindow_combination_resize, |
454592a6 | 6761 | doc: /* If t, resize window combinations proportionally. |
1a13852e | 6762 | If this variable is nil, splitting a window gets the entire screen space |
a0c2d0ae | 6763 | for displaying the new window from the window to split. Deleting and |
df85d315 | 6764 | resizing a window preferably resizes one adjacent window only. |
a0c2d0ae | 6765 | |
454592a6 | 6766 | If this variable is t, splitting a window tries to get the space |
a0c2d0ae MR |
6767 | proportionally from all windows in the same combination. This also |
6768 | allows to split a window that is otherwise too small or of fixed size. | |
6769 | Resizing and deleting a window proportionally resize all windows in the | |
6770 | same combination. | |
1a13852e | 6771 | |
454592a6 MR |
6772 | Other values are reserved for future use. |
6773 | ||
b6f67890 | 6774 | This variable takes no effect if `window-combination-limit' is non-nil. */); |
a0c2d0ae | 6775 | Vwindow_combination_resize = Qnil; |
1a13852e | 6776 | |
b6f67890 | 6777 | DEFVAR_LISP ("window-combination-limit", Vwindow_combination_limit, |
8e17c9ba MR |
6778 | doc: /* If non-nil, splitting a window makes a new parent window. |
6779 | The following values are recognized: | |
1a13852e | 6780 | |
8e17c9ba | 6781 | nil means splitting a window will create a new parent window only if the |
5938d519 MR |
6782 | window has no parent window or the window shall become part of a |
6783 | combination orthogonal to the one it is part of. | |
1a13852e | 6784 | |
5938d519 MR |
6785 | `window-size' means that splitting a window for displaying a buffer |
6786 | makes a new parent window provided `display-buffer' is supposed to | |
6787 | explicitly set the window's size due to the presence of a | |
6788 | `window-height' or `window-width' entry in the alist used by | |
6789 | `display-buffer'. Otherwise, this value is handled like nil. | |
8e17c9ba MR |
6790 | |
6791 | `temp-buffer' means that splitting a window for displaying a temporary | |
6792 | buffer always makes a new parent window. Otherwise, this value is | |
6793 | handled like nil. | |
6794 | ||
8e17c9ba MR |
6795 | `display-buffer' means that splitting a window for displaying a buffer |
6796 | always makes a new parent window. Since temporary buffers are | |
6797 | displayed by the function `display-buffer', this value is stronger | |
6798 | than `temp-buffer'. Splitting a window for other purpose makes a | |
6799 | new parent window only if needed. | |
6800 | ||
6801 | t means that splitting a window always creates a new parent window. If | |
6802 | all splits behave this way, each frame's window tree is a binary | |
6803 | tree and every window but the frame's root window has exactly one | |
6804 | sibling. | |
1a13852e | 6805 | |
8e17c9ba | 6806 | Other values are reserved for future use. */); |
5938d519 | 6807 | Vwindow_combination_limit = Qwindow_size; |
666e158e | 6808 | |
6a6ee00d MR |
6809 | DEFVAR_LISP ("window-persistent-parameters", Vwindow_persistent_parameters, |
6810 | doc: /* Alist of persistent window parameters. | |
34a02f46 MR |
6811 | This alist specifies which window parameters shall get saved by |
6812 | `current-window-configuration' and `window-state-get' and subsequently | |
6813 | restored to their previous values by `set-window-configuration' and | |
6814 | `window-state-put'. | |
6a6ee00d MR |
6815 | |
6816 | The car of each entry of this alist is the symbol specifying the | |
6817 | parameter. The cdr is one of the following: | |
6818 | ||
34a02f46 MR |
6819 | nil means the parameter is neither saved by `window-state-get' nor by |
6820 | `current-window-configuration'. | |
6a6ee00d | 6821 | |
34a02f46 MR |
6822 | t means the parameter is saved by `current-window-configuration' and, |
6823 | provided its WRITABLE argument is nil, by `window-state-get'. | |
6a6ee00d | 6824 | |
34a02f46 MR |
6825 | The symbol `writable' means the parameter is saved unconditionally by |
6826 | both `current-window-configuration' and `window-state-get'. Do not use | |
6827 | this value for parameters without read syntax (like windows or frames). | |
6a6ee00d MR |
6828 | |
6829 | Parameters not saved by `current-window-configuration' or | |
6830 | `window-state-get' are left alone by `set-window-configuration' | |
6831 | respectively are not installed by `window-state-put'. */); | |
34a02f46 | 6832 | Vwindow_persistent_parameters = list1 (Fcons (Qclone_of, Qt)); |
6a6ee00d | 6833 | |
7ab12479 JB |
6834 | defsubr (&Sselected_window); |
6835 | defsubr (&Sminibuffer_window); | |
6836 | defsubr (&Swindow_minibuffer_p); | |
6837 | defsubr (&Swindowp); | |
52162052 | 6838 | defsubr (&Swindow_valid_p); |
806b4d9b | 6839 | defsubr (&Swindow_live_p); |
727e958e MR |
6840 | defsubr (&Swindow_frame); |
6841 | defsubr (&Sframe_root_window); | |
6842 | defsubr (&Sframe_first_window); | |
6843 | defsubr (&Sframe_selected_window); | |
6844 | defsubr (&Sset_frame_selected_window); | |
7ab12479 | 6845 | defsubr (&Spos_visible_in_window_p); |
536833ab | 6846 | defsubr (&Swindow_line_height); |
7ab12479 | 6847 | defsubr (&Swindow_buffer); |
bf60a96b | 6848 | defsubr (&Swindow_parent); |
d68443dc MR |
6849 | defsubr (&Swindow_top_child); |
6850 | defsubr (&Swindow_left_child); | |
6851 | defsubr (&Swindow_next_sibling); | |
6852 | defsubr (&Swindow_prev_sibling); | |
b6f67890 MR |
6853 | defsubr (&Swindow_combination_limit); |
6854 | defsubr (&Sset_window_combination_limit); | |
abde8f8c MR |
6855 | defsubr (&Swindow_use_time); |
6856 | defsubr (&Swindow_top_line); | |
6857 | defsubr (&Swindow_left_column); | |
105216ed CY |
6858 | defsubr (&Swindow_total_height); |
6859 | defsubr (&Swindow_total_width); | |
496e208e MR |
6860 | defsubr (&Swindow_normal_size); |
6861 | defsubr (&Swindow_new_total); | |
6862 | defsubr (&Swindow_new_normal); | |
6863 | defsubr (&Sset_window_new_total); | |
6864 | defsubr (&Sset_window_new_normal); | |
d615d6d2 | 6865 | defsubr (&Swindow_resize_apply); |
105216ed CY |
6866 | defsubr (&Swindow_body_height); |
6867 | defsubr (&Swindow_body_width); | |
7ab12479 JB |
6868 | defsubr (&Swindow_hscroll); |
6869 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
6870 | defsubr (&Swindow_redisplay_end_trigger); |
6871 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 6872 | defsubr (&Swindow_edges); |
c99a9eb3 | 6873 | defsubr (&Swindow_pixel_edges); |
9d5405ec | 6874 | defsubr (&Swindow_absolute_pixel_edges); |
c99a9eb3 RS |
6875 | defsubr (&Swindow_inside_edges); |
6876 | defsubr (&Swindow_inside_pixel_edges); | |
9d5405ec | 6877 | defsubr (&Swindow_inside_absolute_pixel_edges); |
d5783c40 JB |
6878 | defsubr (&Scoordinates_in_window_p); |
6879 | defsubr (&Swindow_at); | |
7ab12479 JB |
6880 | defsubr (&Swindow_point); |
6881 | defsubr (&Swindow_start); | |
6882 | defsubr (&Swindow_end); | |
6883 | defsubr (&Sset_window_point); | |
6884 | defsubr (&Sset_window_start); | |
6885 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 6886 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
6887 | defsubr (&Swindow_display_table); |
6888 | defsubr (&Sset_window_display_table); | |
6889 | defsubr (&Snext_window); | |
6890 | defsubr (&Sprevious_window); | |
7ab12479 | 6891 | defsubr (&Sget_buffer_window); |
1a13852e MR |
6892 | defsubr (&Sdelete_other_windows_internal); |
6893 | defsubr (&Sdelete_window_internal); | |
6894 | defsubr (&Sresize_mini_window_internal); | |
7ab12479 | 6895 | defsubr (&Sset_window_buffer); |
1a13852e | 6896 | defsubr (&Srun_window_configuration_change_hook); |
7ab12479 | 6897 | defsubr (&Sselect_window); |
6b61353c | 6898 | defsubr (&Sforce_window_update); |
1a13852e | 6899 | defsubr (&Ssplit_window_internal); |
7ab12479 JB |
6900 | defsubr (&Sscroll_up); |
6901 | defsubr (&Sscroll_down); | |
6902 | defsubr (&Sscroll_left); | |
6903 | defsubr (&Sscroll_right); | |
ccd0664b | 6904 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 6905 | defsubr (&Sscroll_other_window); |
fa832261 | 6906 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 6907 | defsubr (&Srecenter); |
81fe0836 | 6908 | defsubr (&Swindow_text_height); |
7ab12479 JB |
6909 | defsubr (&Smove_to_window_line); |
6910 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 6911 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
6912 | defsubr (&Sset_window_configuration); |
6913 | defsubr (&Scurrent_window_configuration); | |
5500c422 GM |
6914 | defsubr (&Sset_window_margins); |
6915 | defsubr (&Swindow_margins); | |
949cf20f KS |
6916 | defsubr (&Sset_window_fringes); |
6917 | defsubr (&Swindow_fringes); | |
6918 | defsubr (&Sset_window_scroll_bars); | |
6919 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
6920 | defsubr (&Swindow_vscroll); |
6921 | defsubr (&Sset_window_vscroll); | |
2f8274be | 6922 | defsubr (&Scompare_window_configurations); |
67492200 | 6923 | defsubr (&Swindow_list); |
abde8f8c | 6924 | defsubr (&Swindow_list_1); |
496e208e MR |
6925 | defsubr (&Swindow_prev_buffers); |
6926 | defsubr (&Sset_window_prev_buffers); | |
6927 | defsubr (&Swindow_next_buffers); | |
6928 | defsubr (&Sset_window_next_buffers); | |
cfbb2395 JB |
6929 | defsubr (&Swindow_parameters); |
6930 | defsubr (&Swindow_parameter); | |
6931 | defsubr (&Sset_window_parameter); | |
7ab12479 JB |
6932 | } |
6933 | ||
dfcf069d | 6934 | void |
971de7fb | 6935 | keys_of_window (void) |
7ab12479 | 6936 | { |
7ab12479 JB |
6937 | initial_define_key (control_x_map, '<', "scroll-left"); |
6938 | initial_define_key (control_x_map, '>', "scroll-right"); | |
6939 | ||
32129746 | 6940 | initial_define_key (global_map, Ctl ('V'), "scroll-up-command"); |
7ab12479 | 6941 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); |
32129746 | 6942 | initial_define_key (meta_map, 'v', "scroll-down-command"); |
7ab12479 | 6943 | } |