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 | ||
98a07056 DA |
273 | /* Called when W's buffer slot is changed. ARG -1 means that W is about to |
274 | cease its buffer, and 1 means that W is about to set up the new one. */ | |
275 | ||
276 | static void | |
277 | adjust_window_count (struct window *w, int arg) | |
278 | { | |
279 | eassert (eabs (arg) == 1); | |
280 | if (BUFFERP (w->buffer)) | |
281 | { | |
282 | struct buffer *b = XBUFFER (w->buffer); | |
3f781c75 | 283 | |
98a07056 DA |
284 | if (b->base_buffer) |
285 | b = b->base_buffer; | |
286 | b->window_count += arg; | |
287 | eassert (b->window_count >= 0); | |
288 | } | |
289 | } | |
290 | ||
291 | /* Set W's buffer slot to VAL and recompute number | |
292 | of windows showing VAL if it is a buffer. */ | |
293 | ||
294 | void | |
295 | wset_buffer (struct window *w, Lisp_Object val) | |
296 | { | |
297 | adjust_window_count (w, -1); | |
298 | w->buffer = val; | |
299 | adjust_window_count (w, 1); | |
300 | } | |
301 | ||
89bc0592 DA |
302 | /* Build a frequently used 4-integer (X Y W H) list. */ |
303 | ||
304 | static Lisp_Object | |
1479c557 | 305 | list4i (EMACS_INT x, EMACS_INT y, EMACS_INT w, EMACS_INT h) |
89bc0592 DA |
306 | { |
307 | return list4 (make_number (x), make_number (y), | |
308 | make_number (w), make_number (h)); | |
309 | } | |
310 | ||
7ab12479 | 311 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, |
f230ecc9 | 312 | doc: /* Return t if OBJECT is a window and nil otherwise. */) |
5842a27b | 313 | (Lisp_Object object) |
7ab12479 | 314 | { |
413430c5 | 315 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
316 | } |
317 | ||
52162052 MR |
318 | DEFUN ("window-valid-p", Fwindow_valid_p, Swindow_valid_p, 1, 1, 0, |
319 | doc: /* Return t if OBJECT is a valid window and nil otherwise. | |
320 | A valid window is either a window that displays a buffer or an internal | |
321 | window. Deleted windows are not live. */) | |
322 | (Lisp_Object object) | |
323 | { | |
324 | return WINDOW_VALID_P (object) ? Qt : Qnil; | |
325 | } | |
326 | ||
806b4d9b | 327 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
f230ecc9 | 328 | doc: /* Return t if OBJECT is a live window and nil otherwise. |
49745b39 CY |
329 | A live window is a window that displays a buffer. |
330 | Internal windows and deleted windows are not live. */) | |
5842a27b | 331 | (Lisp_Object object) |
605be8af | 332 | { |
9e571f49 | 333 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af | 334 | } |
727e958e MR |
335 | \f |
336 | /* Frames and windows. */ | |
89bc0592 | 337 | DEFUN ("window-frame", Fwindow_frame, Swindow_frame, 0, 1, 0, |
727e958e | 338 | doc: /* Return the frame that window WINDOW is on. |
52162052 | 339 | WINDOW must be a valid window and defaults to the selected one. */) |
727e958e MR |
340 | (Lisp_Object window) |
341 | { | |
52162052 | 342 | return decode_valid_window (window)->frame; |
727e958e MR |
343 | } |
344 | ||
345 | DEFUN ("frame-root-window", Fframe_root_window, Sframe_root_window, 0, 1, 0, | |
87e68db4 JB |
346 | doc: /* Return the root window of FRAME-OR-WINDOW. |
347 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
49745b39 CY |
348 | With a frame argument, return that frame's root window. |
349 | With a window argument, return the root window of that window's frame. */) | |
727e958e MR |
350 | (Lisp_Object frame_or_window) |
351 | { | |
352 | Lisp_Object window; | |
353 | ||
354 | if (NILP (frame_or_window)) | |
e69b0960 | 355 | window = SELECTED_FRAME ()->root_window; |
52162052 MR |
356 | else if (WINDOW_VALID_P (frame_or_window)) |
357 | window = XFRAME (XWINDOW (frame_or_window)->frame)->root_window; | |
727e958e MR |
358 | else |
359 | { | |
360 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 361 | window = XFRAME (frame_or_window)->root_window; |
727e958e MR |
362 | } |
363 | ||
364 | return window; | |
365 | } | |
366 | ||
367 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, | |
49745b39 CY |
368 | doc: /* Return the minibuffer window for frame FRAME. |
369 | If FRAME is omitted or nil, it defaults to the selected frame. */) | |
727e958e MR |
370 | (Lisp_Object frame) |
371 | { | |
d9f07150 | 372 | return FRAME_MINIBUF_WINDOW (decode_live_frame (frame)); |
727e958e MR |
373 | } |
374 | ||
375 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, | |
376 | Swindow_minibuffer_p, 0, 1, 0, | |
377 | doc: /* Return non-nil if WINDOW is a minibuffer window. | |
52162052 | 378 | WINDOW must be a valid window and defaults to the selected one. */) |
727e958e MR |
379 | (Lisp_Object window) |
380 | { | |
52162052 | 381 | return MINI_WINDOW_P (decode_valid_window (window)) ? Qt : Qnil; |
727e958e MR |
382 | } |
383 | ||
384 | /* Don't move this to window.el - this must be a safe routine. */ | |
385 | DEFUN ("frame-first-window", Fframe_first_window, Sframe_first_window, 0, 1, 0, | |
87e68db4 JB |
386 | doc: /* Return the topmost, leftmost live window on FRAME-OR-WINDOW. |
387 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
52162052 MR |
388 | Else if FRAME-OR-WINDOW denotes a valid window, return the first window |
389 | of that window's frame. If FRAME-OR-WINDOW denotes a live frame, return | |
727e958e MR |
390 | the first window of that frame. */) |
391 | (Lisp_Object frame_or_window) | |
392 | { | |
393 | Lisp_Object window; | |
394 | ||
395 | if (NILP (frame_or_window)) | |
e69b0960 | 396 | window = SELECTED_FRAME ()->root_window; |
52162052 | 397 | else if (WINDOW_VALID_P (frame_or_window)) |
e69b0960 | 398 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window; |
727e958e MR |
399 | else |
400 | { | |
401 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 402 | window = XFRAME (frame_or_window)->root_window; |
727e958e MR |
403 | } |
404 | ||
d3d50620 | 405 | while (NILP (XWINDOW (window)->buffer)) |
727e958e | 406 | { |
d3d50620 DA |
407 | if (! NILP (XWINDOW (window)->hchild)) |
408 | window = XWINDOW (window)->hchild; | |
409 | else if (! NILP (XWINDOW (window)->vchild)) | |
410 | window = XWINDOW (window)->vchild; | |
727e958e | 411 | else |
1088b922 | 412 | emacs_abort (); |
727e958e MR |
413 | } |
414 | ||
415 | return window; | |
416 | } | |
417 | ||
418 | DEFUN ("frame-selected-window", Fframe_selected_window, | |
419 | Sframe_selected_window, 0, 1, 0, | |
87e68db4 JB |
420 | doc: /* Return the selected window of FRAME-OR-WINDOW. |
421 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
52162052 MR |
422 | Else if FRAME-OR-WINDOW denotes a valid window, return the selected |
423 | window of that window's frame. If FRAME-OR-WINDOW denotes a live frame, | |
424 | return the selected window of that frame. */) | |
727e958e MR |
425 | (Lisp_Object frame_or_window) |
426 | { | |
427 | Lisp_Object window; | |
428 | ||
429 | if (NILP (frame_or_window)) | |
e69b0960 | 430 | window = SELECTED_FRAME ()->selected_window; |
52162052 | 431 | else if (WINDOW_VALID_P (frame_or_window)) |
e69b0960 | 432 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->selected_window; |
727e958e MR |
433 | else |
434 | { | |
435 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 436 | window = XFRAME (frame_or_window)->selected_window; |
727e958e MR |
437 | } |
438 | ||
439 | return window; | |
440 | } | |
441 | ||
442 | DEFUN ("set-frame-selected-window", Fset_frame_selected_window, | |
443 | Sset_frame_selected_window, 2, 3, 0, | |
444 | doc: /* Set selected window of FRAME to WINDOW. | |
445 | FRAME must be a live frame and defaults to the selected one. If FRAME | |
446 | is the selected frame, this makes WINDOW the selected window. Optional | |
447 | argument NORECORD non-nil means to neither change the order of recently | |
448 | selected windows nor the buffer list. WINDOW must denote a live window. | |
449 | Return WINDOW. */) | |
450 | (Lisp_Object frame, Lisp_Object window, Lisp_Object norecord) | |
451 | { | |
452 | if (NILP (frame)) | |
453 | frame = selected_frame; | |
454 | ||
455 | CHECK_LIVE_FRAME (frame); | |
456 | CHECK_LIVE_WINDOW (window); | |
457 | ||
458 | if (! EQ (frame, WINDOW_FRAME (XWINDOW (window)))) | |
459 | error ("In `set-frame-selected-window', WINDOW is not on FRAME"); | |
460 | ||
461 | if (EQ (frame, selected_frame)) | |
462 | return Fselect_window (window, norecord); | |
463 | else | |
f00af5b1 PE |
464 | { |
465 | fset_selected_window (XFRAME (frame), window); | |
466 | return window; | |
467 | } | |
727e958e MR |
468 | } |
469 | ||
470 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
471 | doc: /* Return the selected window. | |
472 | The selected window is the window in which the standard cursor for | |
473 | selected windows appears and to which many commands apply. */) | |
474 | (void) | |
475 | { | |
476 | return selected_window; | |
477 | } | |
478 | ||
9397e56f MR |
479 | int window_select_count; |
480 | ||
727e958e MR |
481 | /* If select_window is called with inhibit_point_swap non-zero it will |
482 | not store point of the old selected window's buffer back into that | |
483 | window's pointm slot. This is needed by Fset_window_configuration to | |
484 | avoid that the display routine is called with selected_window set to | |
485 | Qnil causing a subsequent crash. */ | |
486 | static Lisp_Object | |
487 | select_window (Lisp_Object window, Lisp_Object norecord, int inhibit_point_swap) | |
488 | { | |
489 | register struct window *w; | |
727e958e MR |
490 | struct frame *sf; |
491 | ||
492 | CHECK_LIVE_WINDOW (window); | |
493 | ||
494 | w = XWINDOW (window); | |
495 | w->frozen_window_start_p = 0; | |
496 | ||
497 | if (NILP (norecord)) | |
498 | { | |
45942c7d | 499 | w->use_time = ++window_select_count; |
d3d50620 | 500 | record_buffer (w->buffer); |
727e958e MR |
501 | } |
502 | ||
734fbd86 MR |
503 | /* Make the selected window's buffer current. */ |
504 | Fset_buffer (w->buffer); | |
505 | ||
727e958e MR |
506 | if (EQ (window, selected_window) && !inhibit_point_swap) |
507 | return window; | |
508 | ||
509 | sf = SELECTED_FRAME (); | |
510 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
511 | { | |
f00af5b1 | 512 | fset_selected_window (XFRAME (WINDOW_FRAME (w)), window); |
727e958e MR |
513 | /* Use this rather than Fhandle_switch_frame |
514 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
515 | move around in the state where a minibuffer in a separate | |
516 | frame is active. */ | |
517 | Fselect_frame (WINDOW_FRAME (w), norecord); | |
518 | /* Fselect_frame called us back so we've done all the work already. */ | |
519 | eassert (EQ (window, selected_window)); | |
520 | return window; | |
521 | } | |
522 | else | |
f00af5b1 | 523 | fset_selected_window (sf, window); |
727e958e | 524 | |
1e101a4b SM |
525 | select_window_1 (window, inhibit_point_swap); |
526 | ||
527 | bset_last_selected_window (XBUFFER (w->buffer), window); | |
528 | windows_or_buffers_changed++; | |
529 | return window; | |
530 | } | |
531 | ||
532 | /* Select window with a minimum of fuss, i.e. don't record the change anywhere | |
3f781c75 | 533 | (not even for redisplay's benefit), and assume that the window's frame is |
1e101a4b SM |
534 | already selected. */ |
535 | void | |
536 | select_window_1 (Lisp_Object window, bool inhibit_point_swap) | |
537 | { | |
734fbd86 MR |
538 | /* Store the old selected window's buffer's point in pointm of the old |
539 | selected window. It belongs to that window, and when the window is | |
540 | not selected, must be in the window. */ | |
727e958e MR |
541 | if (!inhibit_point_swap) |
542 | { | |
1e101a4b | 543 | struct window *ow = XWINDOW (selected_window); |
d3d50620 DA |
544 | if (! NILP (ow->buffer)) |
545 | set_marker_both (ow->pointm, ow->buffer, | |
546 | BUF_PT (XBUFFER (ow->buffer)), | |
547 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
727e958e MR |
548 | } |
549 | ||
550 | selected_window = window; | |
727e958e MR |
551 | |
552 | /* Go to the point recorded in the window. | |
553 | This is important when the buffer is in more | |
554 | than one window. It also matters when | |
555 | redisplay_window has altered point after scrolling, | |
556 | because it makes the change only in the window. */ | |
557 | { | |
1e101a4b | 558 | register ptrdiff_t new_point = marker_position (XWINDOW (window)->pointm); |
727e958e MR |
559 | if (new_point < BEGV) |
560 | SET_PT (BEGV); | |
561 | else if (new_point > ZV) | |
562 | SET_PT (ZV); | |
563 | else | |
564 | SET_PT (new_point); | |
565 | } | |
727e958e MR |
566 | } |
567 | ||
568 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, | |
94900bfe MR |
569 | doc: /* Select WINDOW which must be a live window. |
570 | Also make WINDOW's frame the selected frame and WINDOW that frame's | |
571 | selected window. In addition, make WINDOW's buffer current and set that | |
572 | buffer's value of `point' to the value of WINDOW's `window-point'. | |
573 | Return WINDOW. | |
727e958e MR |
574 | |
575 | Optional second arg NORECORD non-nil means do not put this buffer at the | |
576 | front of the buffer list and do not make this window the most recently | |
577 | selected one. | |
605be8af | 578 | |
727e958e MR |
579 | Note that the main editor command loop sets the current buffer to the |
580 | buffer of the selected window before each command. */) | |
581 | (register Lisp_Object window, Lisp_Object norecord) | |
582 | { | |
583 | return select_window (window, norecord, 0); | |
584 | } | |
585 | \f | |
bf60a96b | 586 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
49745b39 CY |
587 | doc: /* Return the buffer displayed in window WINDOW. |
588 | If WINDOW is omitted or nil, it defaults to the selected window. | |
589 | Return nil for an internal window or a deleted window. */) | |
bf60a96b MR |
590 | (Lisp_Object window) |
591 | { | |
d3d50620 | 592 | return decode_any_window (window)->buffer; |
bf60a96b MR |
593 | } |
594 | ||
595 | DEFUN ("window-parent", Fwindow_parent, Swindow_parent, 0, 1, 0, | |
49745b39 | 596 | doc: /* Return the parent window of window WINDOW. |
52162052 | 597 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 | 598 | Return nil for a window with no parent (e.g. a root window). */) |
bf60a96b MR |
599 | (Lisp_Object window) |
600 | { | |
52162052 | 601 | return decode_valid_window (window)->parent; |
bf60a96b MR |
602 | } |
603 | ||
89bc0592 | 604 | DEFUN ("window-top-child", Fwindow_top_child, Swindow_top_child, 0, 1, 0, |
49745b39 | 605 | doc: /* Return the topmost child window of window WINDOW. |
52162052 | 606 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 CY |
607 | Return nil if WINDOW is a live window (live windows have no children). |
608 | Return nil if WINDOW is an internal window whose children form a | |
609 | horizontal combination. */) | |
bf60a96b MR |
610 | (Lisp_Object window) |
611 | { | |
52162052 | 612 | return decode_valid_window (window)->vchild; |
bf60a96b MR |
613 | } |
614 | ||
89bc0592 | 615 | DEFUN ("window-left-child", Fwindow_left_child, Swindow_left_child, 0, 1, 0, |
49745b39 | 616 | doc: /* Return the leftmost child window of window WINDOW. |
52162052 | 617 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 CY |
618 | Return nil if WINDOW is a live window (live windows have no children). |
619 | Return nil if WINDOW is an internal window whose children form a | |
620 | vertical combination. */) | |
bf60a96b MR |
621 | (Lisp_Object window) |
622 | { | |
52162052 | 623 | return decode_valid_window (window)->hchild; |
bf60a96b MR |
624 | } |
625 | ||
d68443dc | 626 | DEFUN ("window-next-sibling", Fwindow_next_sibling, Swindow_next_sibling, 0, 1, 0, |
49745b39 | 627 | doc: /* Return the next sibling window of window WINDOW. |
52162052 | 628 | WINDOW must be a valid window and defaults to the selected one. |
d68443dc | 629 | Return nil if WINDOW has no next sibling. */) |
bf60a96b MR |
630 | (Lisp_Object window) |
631 | { | |
52162052 | 632 | return decode_valid_window (window)->next; |
bf60a96b MR |
633 | } |
634 | ||
d68443dc | 635 | DEFUN ("window-prev-sibling", Fwindow_prev_sibling, Swindow_prev_sibling, 0, 1, 0, |
49745b39 | 636 | doc: /* Return the previous sibling window of window WINDOW. |
52162052 | 637 | WINDOW must be a valid window and defaults to the selected one. |
d68443dc | 638 | Return nil if WINDOW has no previous sibling. */) |
bf60a96b MR |
639 | (Lisp_Object window) |
640 | { | |
52162052 | 641 | return decode_valid_window (window)->prev; |
bf60a96b | 642 | } |
67492200 | 643 | |
72f94d4b | 644 | DEFUN ("window-combination-limit", Fwindow_combination_limit, Swindow_combination_limit, 1, 1, 0, |
b6f67890 | 645 | doc: /* Return combination limit of window WINDOW. |
be7f5545 | 646 | If the return value is nil, child windows of WINDOW can be recombined with |
b6f67890 | 647 | WINDOW's siblings. A return value of t means that child windows of |
72f94d4b DA |
648 | WINDOW are never \(re-)combined with WINDOW's siblings. |
649 | ||
650 | WINDOW must be a valid window. The return value is meaningful for | |
651 | internal windows only. */) | |
496e208e | 652 | (Lisp_Object window) |
7ab12479 | 653 | { |
72f94d4b DA |
654 | CHECK_VALID_WINDOW (window); |
655 | return XWINDOW (window)->combination_limit; | |
7ab12479 | 656 | } |
53bb6b99 | 657 | |
b6f67890 | 658 | DEFUN ("set-window-combination-limit", Fset_window_combination_limit, Sset_window_combination_limit, 2, 2, 0, |
d2999b1a | 659 | doc: /* Set combination limit of window WINDOW to LIMIT; return LIMIT. |
8e17c9ba MR |
660 | If LIMIT is nil, child windows of WINDOW can be recombined with WINDOW's |
661 | siblings. LIMIT t means that child windows of WINDOW are never | |
662 | \(re-)combined with WINDOW's siblings. Other values are reserved for | |
fdaf534a MR |
663 | future use. |
664 | ||
665 | WINDOW must be a valid window. Setting the combination limit is | |
666 | meaningful for internal windows only. */) | |
d2999b1a | 667 | (Lisp_Object window, Lisp_Object limit) |
b3a10345 | 668 | { |
e8c17b81 PE |
669 | wset_combination_limit (decode_valid_window (window), limit); |
670 | return limit; | |
496e208e | 671 | } |
7bbc67d2 | 672 | |
496e208e | 673 | DEFUN ("window-use-time", Fwindow_use_time, Swindow_use_time, 0, 1, 0, |
49745b39 | 674 | doc: /* Return the use time of window WINDOW. |
52162052 | 675 | WINDOW must be a live window and defaults to the selected one. |
49745b39 CY |
676 | The window with the highest use time is the most recently selected |
677 | one. The window with the lowest use time is the least recently | |
678 | selected one. */) | |
496e208e MR |
679 | (Lisp_Object window) |
680 | { | |
52162052 | 681 | return make_number (decode_live_window (window)->use_time); |
496e208e | 682 | } |
abde8f8c | 683 | \f |
105216ed CY |
684 | DEFUN ("window-total-height", Fwindow_total_height, Swindow_total_height, 0, 1, 0, |
685 | doc: /* Return the total height, in lines, of window WINDOW. | |
52162052 | 686 | WINDOW must be a valid window and defaults to the selected one. |
b3a10345 | 687 | |
105216ed CY |
688 | The return value includes the mode line and header line, if any. |
689 | If WINDOW is an internal window, the total height is the height | |
690 | of the screen areas spanned by its children. | |
536833ab | 691 | |
105216ed CY |
692 | On a graphical display, this total height is reported as an |
693 | integer multiple of the default character height. */) | |
694 | (Lisp_Object window) | |
496e208e | 695 | { |
52162052 | 696 | return decode_valid_window (window)->total_lines; |
105216ed | 697 | } |
536833ab | 698 | |
105216ed CY |
699 | DEFUN ("window-total-width", Fwindow_total_width, Swindow_total_width, 0, 1, 0, |
700 | doc: /* Return the total width, in columns, of window WINDOW. | |
52162052 | 701 | WINDOW must be a valid window and defaults to the selected one. |
b3a10345 | 702 | |
105216ed CY |
703 | The return value includes any vertical dividers or scroll bars |
704 | belonging to WINDOW. If WINDOW is an internal window, the total width | |
705 | is the width of the screen areas spanned by its children. | |
b3a10345 | 706 | |
105216ed CY |
707 | On a graphical display, this total width is reported as an |
708 | integer multiple of the default character width. */) | |
496e208e MR |
709 | (Lisp_Object window) |
710 | { | |
52162052 | 711 | return decode_valid_window (window)->total_cols; |
abde8f8c | 712 | } |
b3a10345 | 713 | |
496e208e | 714 | DEFUN ("window-new-total", Fwindow_new_total, Swindow_new_total, 0, 1, 0, |
49745b39 | 715 | doc: /* Return the new total size of window WINDOW. |
52162052 | 716 | WINDOW must be a valid window and defaults to the selected one. */) |
496e208e MR |
717 | (Lisp_Object window) |
718 | { | |
52162052 | 719 | return decode_valid_window (window)->new_total; |
496e208e MR |
720 | } |
721 | ||
722 | DEFUN ("window-normal-size", Fwindow_normal_size, Swindow_normal_size, 0, 2, 0, | |
49745b39 | 723 | doc: /* Return the normal height of window WINDOW. |
52162052 | 724 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 | 725 | If HORIZONTAL is non-nil, return the normal width of WINDOW. */) |
496e208e MR |
726 | (Lisp_Object window, Lisp_Object horizontal) |
727 | { | |
52162052 | 728 | struct window *w = decode_valid_window (window); |
d3d50620 DA |
729 | |
730 | return NILP (horizontal) ? w->normal_lines : w->normal_cols; | |
496e208e MR |
731 | } |
732 | ||
733 | DEFUN ("window-new-normal", Fwindow_new_normal, Swindow_new_normal, 0, 1, 0, | |
49745b39 | 734 | doc: /* Return new normal size of window WINDOW. |
52162052 | 735 | WINDOW must be a valid window and defaults to the selected one. */) |
496e208e MR |
736 | (Lisp_Object window) |
737 | { | |
52162052 | 738 | return decode_valid_window (window)->new_normal; |
496e208e MR |
739 | } |
740 | ||
abde8f8c | 741 | DEFUN ("window-left-column", Fwindow_left_column, Swindow_left_column, 0, 1, 0, |
49745b39 | 742 | doc: /* Return left column of window WINDOW. |
105216ed CY |
743 | This is the distance, in columns, between the left edge of WINDOW and |
744 | the left edge of the frame's window area. For instance, the return | |
745 | value is 0 if there is no window to the left of WINDOW. | |
746 | ||
52162052 | 747 | WINDOW must be a valid window and defaults to the selected one. */) |
abde8f8c MR |
748 | (Lisp_Object window) |
749 | { | |
52162052 | 750 | return decode_valid_window (window)->left_col; |
abde8f8c MR |
751 | } |
752 | ||
753 | DEFUN ("window-top-line", Fwindow_top_line, Swindow_top_line, 0, 1, 0, | |
49745b39 | 754 | doc: /* Return top line of window WINDOW. |
105216ed CY |
755 | This is the distance, in lines, between the top of WINDOW and the top |
756 | of the frame's window area. For instance, the return value is 0 if | |
757 | there is no window above WINDOW. | |
758 | ||
52162052 | 759 | WINDOW must be a valid window and defaults to the selected one. */) |
abde8f8c MR |
760 | (Lisp_Object window) |
761 | { | |
52162052 | 762 | return decode_valid_window (window)->top_line; |
abde8f8c MR |
763 | } |
764 | ||
765 | /* Return the number of lines of W's body. Don't count any mode or | |
766 | header line of W. */ | |
767 | ||
46a4ce9e | 768 | static int |
abde8f8c MR |
769 | window_body_lines (struct window *w) |
770 | { | |
d3d50620 | 771 | int height = XFASTINT (w->total_lines); |
abde8f8c MR |
772 | |
773 | if (!MINI_WINDOW_P (w)) | |
774 | { | |
775 | if (WINDOW_WANTS_MODELINE_P (w)) | |
776 | --height; | |
777 | if (WINDOW_WANTS_HEADER_LINE_P (w)) | |
778 | --height; | |
779 | } | |
780 | ||
781 | return height; | |
782 | } | |
783 | ||
784 | /* Return the number of columns of W's body. Don't count columns | |
785 | occupied by the scroll bar or the vertical bar separating W from its | |
786 | right sibling. On window-systems don't count fringes or display | |
787 | margins either. */ | |
788 | ||
789 | int | |
790 | window_body_cols (struct window *w) | |
791 | { | |
792 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
d3d50620 | 793 | int width = XINT (w->total_cols); |
abde8f8c MR |
794 | |
795 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) | |
796 | /* Scroll bars occupy a few columns. */ | |
797 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); | |
798 | else if (!FRAME_WINDOW_P (f) | |
799 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
800 | /* The column of `|' characters separating side-by-side windows | |
801 | occupies one column only. */ | |
802 | width -= 1; | |
803 | ||
804 | if (FRAME_WINDOW_P (f)) | |
805 | /* On window-systems, fringes and display margins cannot be | |
806 | used for normal text. */ | |
807 | width -= (WINDOW_FRINGE_COLS (w) | |
808 | + WINDOW_LEFT_MARGIN_COLS (w) | |
809 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
810 | ||
811 | return width; | |
812 | } | |
813 | ||
105216ed CY |
814 | DEFUN ("window-body-height", Fwindow_body_height, Swindow_body_height, 0, 1, 0, |
815 | doc: /* Return the height, in lines, of WINDOW's text area. | |
52162052 | 816 | WINDOW must be a live window and defaults to the selected one. |
89bd5ee1 | 817 | |
105216ed CY |
818 | The returned height does not include the mode line or header line. |
819 | On a graphical display, the height is expressed as an integer multiple | |
820 | of the default character height. If a line at the bottom of the text | |
821 | area is only partially visible, that counts as a whole line; to | |
822 | exclude partially-visible lines, use `window-text-height'. */) | |
823 | (Lisp_Object window) | |
abde8f8c | 824 | { |
b6a9e8b1 | 825 | return make_number (window_body_lines (decode_live_window (window))); |
105216ed | 826 | } |
abde8f8c | 827 | |
105216ed CY |
828 | DEFUN ("window-body-width", Fwindow_body_width, Swindow_body_width, 0, 1, 0, |
829 | doc: /* Return the width, in columns, of WINDOW's text area. | |
52162052 | 830 | WINDOW must be a live window and defaults to the selected one. |
105216ed CY |
831 | |
832 | The return value does not include any vertical dividers, fringe or | |
833 | marginal areas, or scroll bars. On a graphical display, the width is | |
834 | expressed as an integer multiple of the default character width. */) | |
835 | (Lisp_Object window) | |
836 | { | |
b6a9e8b1 | 837 | return make_number (window_body_cols (decode_live_window (window))); |
abde8f8c | 838 | } |
536833ab | 839 | |
7ab12479 | 840 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 | 841 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
496e208e | 842 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 843 | (Lisp_Object window) |
7ab12479 | 844 | { |
52162052 | 845 | return make_number (decode_live_window (window)->hscroll); |
7ab12479 JB |
846 | } |
847 | ||
24a212eb PE |
848 | /* Set W's horizontal scroll amount to HSCROLL clipped to a reasonable |
849 | range, returning the new amount as a fixnum. */ | |
850 | static Lisp_Object | |
851 | set_window_hscroll (struct window *w, EMACS_INT hscroll) | |
852 | { | |
4e71fd89 PE |
853 | /* Horizontal scrolling has problems with large scroll amounts. |
854 | It's too slow with long lines, and even with small lines the | |
855 | display can be messed up. For now, though, impose only the limits | |
856 | required by the internal representation: horizontal scrolling must | |
857 | fit in fixnum (since it's visible to Elisp) and into ptrdiff_t | |
858 | (since it's stored in a ptrdiff_t). */ | |
859 | ptrdiff_t hscroll_max = min (MOST_POSITIVE_FIXNUM, PTRDIFF_MAX); | |
860 | ptrdiff_t new_hscroll = clip_to_bounds (0, hscroll, hscroll_max); | |
24a212eb PE |
861 | |
862 | /* Prevent redisplay shortcuts when changing the hscroll. */ | |
863 | if (w->hscroll != new_hscroll) | |
d3d50620 | 864 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
24a212eb PE |
865 | |
866 | w->hscroll = new_hscroll; | |
867 | return make_number (new_hscroll); | |
868 | } | |
869 | ||
7ab12479 | 870 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, |
fdb82f93 | 871 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
52162052 | 872 | WINDOW must be a live window and defaults to the selected one. |
24a212eb PE |
873 | Clip the number to a reasonable value if out of range. |
874 | Return the new number. NCOL should be zero or positive. | |
ebadb1e4 EZ |
875 | |
876 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 877 | window so that the location of point moves off-window. */) |
5842a27b | 878 | (Lisp_Object window, Lisp_Object ncol) |
7ab12479 | 879 | { |
b7826503 | 880 | CHECK_NUMBER (ncol); |
89bc0592 | 881 | return set_window_hscroll (decode_live_window (window), XINT (ncol)); |
7ab12479 JB |
882 | } |
883 | ||
190eb263 RS |
884 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
885 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 886 | doc: /* Return WINDOW's redisplay end trigger value. |
52162052 | 887 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 888 | See `set-window-redisplay-end-trigger' for more information. */) |
5842a27b | 889 | (Lisp_Object window) |
190eb263 | 890 | { |
52162052 | 891 | return decode_live_window (window)->redisplay_end_trigger; |
190eb263 RS |
892 | } |
893 | ||
894 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
895 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 | 896 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
52162052 MR |
897 | WINDOW must be a live window and defaults to the selected one. VALUE |
898 | should be a buffer position (typically a marker) or nil. If it is a | |
899 | buffer position, then if redisplay in WINDOW reaches a position beyond | |
900 | VALUE, the functions in `redisplay-end-trigger-functions' are called | |
901 | with two arguments: WINDOW, and the end trigger value. Afterwards the | |
902 | end-trigger value is reset to nil. */) | |
5842a27b | 903 | (register Lisp_Object window, Lisp_Object value) |
190eb263 | 904 | { |
e8c17b81 PE |
905 | wset_redisplay_end_trigger (decode_live_window (window), value); |
906 | return value; | |
190eb263 RS |
907 | } |
908 | ||
7ab12479 | 909 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 | 910 | doc: /* Return a list of the edge coordinates of WINDOW. |
52162052 MR |
911 | WINDOW must be a valid window and defaults to the selected one. |
912 | ||
913 | The returned list has the form (LEFT TOP RIGHT BOTTOM). TOP and BOTTOM | |
914 | count by lines, and LEFT and RIGHT count by columns, all relative to 0, | |
915 | 0 at top left corner of frame. | |
916 | ||
917 | RIGHT is one more than the rightmost column occupied by WINDOW. BOTTOM | |
918 | is one more than the bottommost row occupied by WINDOW. The edges | |
919 | include the space used by WINDOW's scroll bar, display margins, fringes, | |
920 | header line, and/or mode line. For the edges of just the text area, use | |
921 | `window-inside-edges'. */) | |
5842a27b | 922 | (Lisp_Object window) |
7ab12479 | 923 | { |
52162052 | 924 | register struct window *w = decode_valid_window (window); |
7ab12479 | 925 | |
1479c557 PE |
926 | return list4i (WINDOW_LEFT_EDGE_COL (w), WINDOW_TOP_EDGE_LINE (w), |
927 | WINDOW_RIGHT_EDGE_COL (w), WINDOW_BOTTOM_EDGE_LINE (w)); | |
7ab12479 JB |
928 | } |
929 | ||
c99a9eb3 RS |
930 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
931 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
52162052 MR |
932 | WINDOW must be a valid window and defaults to the selected one. |
933 | ||
934 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
935 | 0, 0 at the top left corner of the frame. | |
b35ac83e CY |
936 | |
937 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
938 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
939 | The pixel edges include the space used by WINDOW's scroll bar, display | |
940 | margins, fringes, header line, and/or mode line. For the pixel edges | |
941 | of just the text area, use `window-inside-pixel-edges'. */) | |
5842a27b | 942 | (Lisp_Object window) |
c99a9eb3 | 943 | { |
52162052 | 944 | register struct window *w = decode_valid_window (window); |
c99a9eb3 | 945 | |
1479c557 PE |
946 | return list4i (WINDOW_LEFT_EDGE_X (w), WINDOW_TOP_EDGE_Y (w), |
947 | WINDOW_RIGHT_EDGE_X (w), WINDOW_BOTTOM_EDGE_Y (w)); | |
c99a9eb3 RS |
948 | } |
949 | ||
9d5405ec | 950 | static void |
5e617bc2 | 951 | calc_absolute_offset (struct window *w, int *add_x, int *add_y) |
9d5405ec | 952 | { |
d3d50620 | 953 | struct frame *f = XFRAME (w->frame); |
9d5405ec J |
954 | *add_y = f->top_pos; |
955 | #ifdef FRAME_MENUBAR_HEIGHT | |
956 | *add_y += FRAME_MENUBAR_HEIGHT (f); | |
957 | #endif | |
bfeabdc3 JD |
958 | #ifdef FRAME_TOOLBAR_TOP_HEIGHT |
959 | *add_y += FRAME_TOOLBAR_TOP_HEIGHT (f); | |
960 | #elif FRAME_TOOLBAR_HEIGHT | |
9d5405ec J |
961 | *add_y += FRAME_TOOLBAR_HEIGHT (f); |
962 | #endif | |
963 | #ifdef FRAME_NS_TITLEBAR_HEIGHT | |
964 | *add_y += FRAME_NS_TITLEBAR_HEIGHT (f); | |
965 | #endif | |
966 | *add_x = f->left_pos; | |
bfeabdc3 JD |
967 | #ifdef FRAME_TOOLBAR_LEFT_WIDTH |
968 | *add_x += FRAME_TOOLBAR_LEFT_WIDTH (f); | |
969 | #endif | |
9d5405ec J |
970 | } |
971 | ||
972 | DEFUN ("window-absolute-pixel-edges", Fwindow_absolute_pixel_edges, | |
973 | Swindow_absolute_pixel_edges, 0, 1, 0, | |
974 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
52162052 MR |
975 | WINDOW must be a valid window and defaults to the selected one. |
976 | ||
977 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
978 | 0, 0 at the top left corner of the display. | |
9d5405ec J |
979 | |
980 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
981 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
982 | The pixel edges include the space used by WINDOW's scroll bar, display | |
983 | margins, fringes, header line, and/or mode line. For the pixel edges | |
c49d071a | 984 | of just the text area, use `window-inside-absolute-pixel-edges'. */) |
5842a27b | 985 | (Lisp_Object window) |
9d5405ec | 986 | { |
52162052 | 987 | register struct window *w = decode_valid_window (window); |
9d5405ec | 988 | int add_x, add_y; |
89bc0592 | 989 | |
ed3751c8 | 990 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec | 991 | |
1479c557 PE |
992 | return list4i (WINDOW_LEFT_EDGE_X (w) + add_x, |
993 | WINDOW_TOP_EDGE_Y (w) + add_y, | |
994 | WINDOW_RIGHT_EDGE_X (w) + add_x, | |
995 | WINDOW_BOTTOM_EDGE_Y (w) + add_y); | |
9d5405ec J |
996 | } |
997 | ||
c99a9eb3 RS |
998 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, |
999 | doc: /* Return a list of the edge coordinates of WINDOW. | |
52162052 MR |
1000 | WINDOW must be a live window and defaults to the selected one. |
1001 | ||
1002 | The returned list has the form (LEFT TOP RIGHT BOTTOM). TOP and BOTTOM | |
1003 | count by lines, and LEFT and RIGHT count by columns, all relative to 0, | |
1004 | 0 at top left corner of frame. | |
b35ac83e CY |
1005 | |
1006 | RIGHT is one more than the rightmost column of WINDOW's text area. | |
52162052 MR |
1007 | BOTTOM is one more than the bottommost row of WINDOW's text area. The |
1008 | inside edges do not include the space used by the WINDOW's scroll bar, | |
1009 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 1010 | (Lisp_Object window) |
c99a9eb3 | 1011 | { |
52162052 | 1012 | register struct window *w = decode_live_window (window); |
c99a9eb3 | 1013 | |
1479c557 PE |
1014 | return list4i ((WINDOW_BOX_LEFT_EDGE_COL (w) |
1015 | + WINDOW_LEFT_MARGIN_COLS (w) | |
1016 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
1017 | (WINDOW_TOP_EDGE_LINE (w) | |
1018 | + WINDOW_HEADER_LINE_LINES (w)), | |
1019 | (WINDOW_BOX_RIGHT_EDGE_COL (w) | |
1020 | - WINDOW_RIGHT_MARGIN_COLS (w) | |
1021 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
1022 | (WINDOW_BOTTOM_EDGE_LINE (w) | |
1023 | - WINDOW_MODE_LINE_LINES (w))); | |
c99a9eb3 RS |
1024 | } |
1025 | ||
1026 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
2fbdc249 | 1027 | doc: /* Return a list of the edge pixel coordinates of WINDOW's text area. |
52162052 MR |
1028 | WINDOW must be a live window and defaults to the selected one. |
1029 | ||
1030 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
1031 | (0,0) at the top left corner of the frame's window area. | |
b35ac83e CY |
1032 | |
1033 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
1034 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
1035 | The inside edges do not include the space used by WINDOW's scroll bar, | |
c99a9eb3 | 1036 | display margins, fringes, header line, and/or mode line. */) |
5842a27b | 1037 | (Lisp_Object window) |
c99a9eb3 | 1038 | { |
52162052 | 1039 | register struct window *w = decode_live_window (window); |
c99a9eb3 | 1040 | |
1479c557 PE |
1041 | return list4i ((WINDOW_BOX_LEFT_EDGE_X (w) |
1042 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
1043 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
1044 | (WINDOW_TOP_EDGE_Y (w) | |
1045 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
1046 | (WINDOW_BOX_RIGHT_EDGE_X (w) | |
1047 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
1048 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
1049 | (WINDOW_BOTTOM_EDGE_Y (w) | |
1050 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
c99a9eb3 RS |
1051 | } |
1052 | ||
9d5405ec J |
1053 | DEFUN ("window-inside-absolute-pixel-edges", |
1054 | Fwindow_inside_absolute_pixel_edges, | |
1055 | Swindow_inside_absolute_pixel_edges, 0, 1, 0, | |
2fbdc249 | 1056 | doc: /* Return a list of the edge pixel coordinates of WINDOW's text area. |
52162052 MR |
1057 | WINDOW must be a live window and defaults to the selected one. |
1058 | ||
1059 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
1060 | (0,0) at the top left corner of the frame's window area. | |
9d5405ec J |
1061 | |
1062 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
1063 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
1064 | The inside edges do not include the space used by WINDOW's scroll bar, | |
1065 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 1066 | (Lisp_Object window) |
9d5405ec | 1067 | { |
52162052 | 1068 | register struct window *w = decode_live_window (window); |
9d5405ec | 1069 | int add_x, add_y; |
89bc0592 | 1070 | |
ed3751c8 | 1071 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec | 1072 | |
1479c557 PE |
1073 | return list4i ((WINDOW_BOX_LEFT_EDGE_X (w) |
1074 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
1075 | + WINDOW_LEFT_FRINGE_WIDTH (w) + add_x), | |
1076 | (WINDOW_TOP_EDGE_Y (w) | |
1077 | + WINDOW_HEADER_LINE_HEIGHT (w) + add_y), | |
1078 | (WINDOW_BOX_RIGHT_EDGE_X (w) | |
1079 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
1080 | - WINDOW_RIGHT_FRINGE_WIDTH (w) + add_x), | |
1081 | (WINDOW_BOTTOM_EDGE_Y (w) | |
1082 | - WINDOW_MODE_LINE_HEIGHT (w) + add_y)); | |
9d5405ec J |
1083 | } |
1084 | ||
9173a8fb | 1085 | /* Test if the character at column X, row Y is within window W. |
341f3858 | 1086 | If it is not, return ON_NOTHING; |
9173a8fb | 1087 | if it is in the window's text area, return ON_TEXT; |
341f3858 | 1088 | if it is on the window's modeline, return ON_MODE_LINE; |
d5783c40 | 1089 | if it is on the border between the window and its right sibling, |
341f3858 | 1090 | return ON_VERTICAL_BORDER. |
9173a8fb | 1091 | if it is on a scroll bar, return ON_SCROLL_BAR. |
341f3858 | 1092 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 1093 | if it is in left or right fringe of the window, |
9173a8fb | 1094 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE; |
49b996e7 | 1095 | if it is in the marginal area to the left/right of the window, |
9173a8fb | 1096 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN. |
5500c422 GM |
1097 | |
1098 | X and Y are frame relative pixel coordinates. */ | |
1099 | ||
7442878f | 1100 | static enum window_part |
9173a8fb | 1101 | coordinates_in_window (register struct window *w, int x, int y) |
d5783c40 | 1102 | { |
b0228ace | 1103 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
7442878f | 1104 | enum window_part part; |
949cf20f | 1105 | int ux = FRAME_COLUMN_WIDTH (f); |
c7b08b0d MR |
1106 | int left_x = WINDOW_LEFT_EDGE_X (w); |
1107 | int right_x = WINDOW_RIGHT_EDGE_X (w); | |
1108 | int top_y = WINDOW_TOP_EDGE_Y (w); | |
1109 | int bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
dad75588 GM |
1110 | /* The width of the area where the vertical line can be dragged. |
1111 | (Between mode lines for instance. */ | |
1112 | int grabbable_width = ux; | |
949cf20f | 1113 | int lmargin_width, rmargin_width, text_left, text_right; |
9173a8fb | 1114 | |
c7b08b0d MR |
1115 | /* Outside any interesting row or column? */ |
1116 | if (y < top_y || y >= bottom_y || x < left_x || x >= right_x) | |
9173a8fb | 1117 | return ON_NOTHING; |
b0228ace | 1118 | |
c7b08b0d MR |
1119 | /* On the mode line or header line? */ |
1120 | if ((WINDOW_WANTS_MODELINE_P (w) | |
1121 | && y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w) | |
1122 | && (part = ON_MODE_LINE)) | |
1123 | || (WINDOW_WANTS_HEADER_LINE_P (w) | |
1124 | && y < top_y + CURRENT_HEADER_LINE_HEIGHT (w) | |
1125 | && (part = ON_HEADER_LINE))) | |
1126 | { | |
1127 | /* If it's under/over the scroll bar portion of the mode/header | |
1128 | line, say it's on the vertical line. That's to be able to | |
1129 | resize windows horizontally in case we're using toolkit scroll | |
1130 | bars. Note: If scrollbars are on the left, the window that | |
1131 | must be eventually resized is that on the left of WINDOW. */ | |
1132 | if ((WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) | |
1133 | && !WINDOW_LEFTMOST_P (w) | |
1134 | && eabs (x - left_x) < grabbable_width) | |
1135 | || (!WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) | |
1136 | && !WINDOW_RIGHTMOST_P (w) | |
1137 | && eabs (x - right_x) < grabbable_width)) | |
1138 | return ON_VERTICAL_BORDER; | |
1139 | else | |
1140 | return part; | |
1141 | } | |
1142 | ||
466539bc EZ |
1143 | /* In what's below, we subtract 1 when computing right_x because we |
1144 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
1145 | if (w->pseudo_window_p) |
1146 | { | |
1147 | left_x = 0; | |
949cf20f | 1148 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
5500c422 GM |
1149 | } |
1150 | else | |
1151 | { | |
949cf20f KS |
1152 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
1153 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
5500c422 | 1154 | } |
37962e60 | 1155 | |
949cf20f | 1156 | /* Outside any interesting column? */ |
9173a8fb CY |
1157 | if (x < left_x || x > right_x) |
1158 | return ON_SCROLL_BAR; | |
949cf20f KS |
1159 | |
1160 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
1161 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 1162 | |
949cf20f KS |
1163 | text_left = window_box_left (w, TEXT_AREA); |
1164 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
1165 | ||
1166 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 1167 | { |
447e9da0 | 1168 | if (!w->pseudo_window_p |
949cf20f | 1169 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 1170 | && !WINDOW_RIGHTMOST_P (w) |
9173a8fb CY |
1171 | && (eabs (x - right_x) < grabbable_width)) |
1172 | return ON_VERTICAL_BORDER; | |
fbad6f9a | 1173 | } |
9173a8fb CY |
1174 | /* Need to say "x > right_x" rather than >=, since on character |
1175 | terminals, the vertical line's x coordinate is right_x. */ | |
1176 | else if (!w->pseudo_window_p | |
1177 | && !WINDOW_RIGHTMOST_P (w) | |
1178 | && x > right_x - ux) | |
1179 | return ON_VERTICAL_BORDER; | |
1180 | ||
1181 | if (x < text_left) | |
949cf20f KS |
1182 | { |
1183 | if (lmargin_width > 0 | |
1184 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1185 | ? (x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) |
1186 | : (x < left_x + lmargin_width))) | |
1187 | return ON_LEFT_MARGIN; | |
1188 | ||
949cf20f KS |
1189 | return ON_LEFT_FRINGE; |
1190 | } | |
1191 | ||
9173a8fb | 1192 | if (x >= text_right) |
949cf20f KS |
1193 | { |
1194 | if (rmargin_width > 0 | |
1195 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1196 | ? (x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) |
1197 | : (x >= right_x - rmargin_width))) | |
1198 | return ON_RIGHT_MARGIN; | |
1199 | ||
949cf20f KS |
1200 | return ON_RIGHT_FRINGE; |
1201 | } | |
1202 | ||
1203 | /* Everything special ruled out - must be on text area */ | |
949cf20f | 1204 | return ON_TEXT; |
d5783c40 JB |
1205 | } |
1206 | ||
9173a8fb CY |
1207 | /* Take X is the frame-relative pixel x-coordinate, and return the |
1208 | x-coordinate relative to part PART of window W. */ | |
1209 | int | |
1210 | window_relative_x_coord (struct window *w, enum window_part part, int x) | |
1211 | { | |
1212 | int left_x = (w->pseudo_window_p) ? 0 : WINDOW_BOX_LEFT_EDGE_X (w); | |
1213 | ||
1214 | switch (part) | |
1215 | { | |
1216 | case ON_TEXT: | |
1217 | return x - window_box_left (w, TEXT_AREA); | |
1218 | ||
1219 | case ON_LEFT_FRINGE: | |
1220 | return x - left_x; | |
1221 | ||
1222 | case ON_RIGHT_FRINGE: | |
1223 | return x - left_x - WINDOW_LEFT_FRINGE_WIDTH (w); | |
1224 | ||
1225 | case ON_LEFT_MARGIN: | |
1226 | return (x - left_x | |
1227 | - ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1228 | ? WINDOW_LEFT_FRINGE_WIDTH (w) : 0)); | |
1229 | ||
1230 | case ON_RIGHT_MARGIN: | |
1231 | return (x + 1 | |
1232 | - ((w->pseudo_window_p) | |
1233 | ? WINDOW_TOTAL_WIDTH (w) | |
1234 | : WINDOW_BOX_RIGHT_EDGE_X (w)) | |
1235 | + window_box_width (w, RIGHT_MARGIN_AREA) | |
1236 | + ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1237 | ? WINDOW_RIGHT_FRINGE_WIDTH (w) : 0)); | |
1238 | } | |
1239 | ||
1240 | /* ON_SCROLL_BAR, ON_NOTHING, and ON_VERTICAL_BORDER: */ | |
1241 | return 0; | |
1242 | } | |
1243 | ||
b0228ace | 1244 | |
d5783c40 | 1245 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
1246 | Scoordinates_in_window_p, 2, 2, 0, |
1247 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
52162052 | 1248 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1249 | COORDINATES is a cons of the form (X . Y), X and Y being distances |
1250 | measured in characters from the upper-left corner of the frame. | |
23fe745a | 1251 | \(0 . 0) denotes the character in the upper left corner of the |
fdb82f93 PJ |
1252 | frame. |
1253 | If COORDINATES are in the text portion of WINDOW, | |
1254 | the coordinates relative to the window are returned. | |
1255 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
1256 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
1257 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
1258 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 1259 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
1260 | `vertical-line' is returned. |
1261 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
1262 | or `right-margin' is returned. */) | |
5842a27b | 1263 | (register Lisp_Object coordinates, Lisp_Object window) |
d5783c40 | 1264 | { |
5500c422 GM |
1265 | struct window *w; |
1266 | struct frame *f; | |
d5783c40 | 1267 | int x, y; |
5500c422 | 1268 | Lisp_Object lx, ly; |
d5783c40 | 1269 | |
52162052 | 1270 | w = decode_live_window (window); |
d3d50620 | 1271 | f = XFRAME (w->frame); |
b7826503 | 1272 | CHECK_CONS (coordinates); |
5500c422 GM |
1273 | lx = Fcar (coordinates); |
1274 | ly = Fcdr (coordinates); | |
b7826503 PJ |
1275 | CHECK_NUMBER_OR_FLOAT (lx); |
1276 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
1277 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
1278 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 | 1279 | |
9173a8fb | 1280 | switch (coordinates_in_window (w, x, y)) |
d5783c40 | 1281 | { |
7442878f | 1282 | case ON_NOTHING: |
d5783c40 JB |
1283 | return Qnil; |
1284 | ||
7442878f | 1285 | case ON_TEXT: |
9173a8fb CY |
1286 | /* Convert X and Y to window relative pixel coordinates, and |
1287 | return the canonical char units. */ | |
1288 | x -= window_box_left (w, TEXT_AREA); | |
1289 | y -= WINDOW_TOP_EDGE_Y (w); | |
949cf20f KS |
1290 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
1291 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 1292 | |
7442878f | 1293 | case ON_MODE_LINE: |
d5783c40 | 1294 | return Qmode_line; |
37962e60 | 1295 | |
7442878f | 1296 | case ON_VERTICAL_BORDER: |
e5d77022 | 1297 | return Qvertical_line; |
d5783c40 | 1298 | |
7442878f | 1299 | case ON_HEADER_LINE: |
045dee35 | 1300 | return Qheader_line; |
5500c422 | 1301 | |
7442878f GM |
1302 | case ON_LEFT_FRINGE: |
1303 | return Qleft_fringe; | |
177c0ea7 | 1304 | |
7442878f GM |
1305 | case ON_RIGHT_FRINGE: |
1306 | return Qright_fringe; | |
fbad6f9a | 1307 | |
49b996e7 GM |
1308 | case ON_LEFT_MARGIN: |
1309 | return Qleft_margin; | |
177c0ea7 | 1310 | |
49b996e7 GM |
1311 | case ON_RIGHT_MARGIN: |
1312 | return Qright_margin; | |
1313 | ||
6487f669 RS |
1314 | case ON_SCROLL_BAR: |
1315 | /* Historically we are supposed to return nil in this case. */ | |
1316 | return Qnil; | |
1317 | ||
d5783c40 | 1318 | default: |
1088b922 | 1319 | emacs_abort (); |
d5783c40 JB |
1320 | } |
1321 | } | |
1322 | ||
67492200 GM |
1323 | |
1324 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
1325 | Check if window W contains coordinates specified by USER_DATA which |
1326 | is actually a pointer to a struct check_window_data CW. | |
1327 | ||
1328 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
1329 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 1330 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
1331 | zero from this function to stop iterating over windows. */ |
1332 | ||
1333 | struct check_window_data | |
1334 | { | |
1335 | Lisp_Object *window; | |
9173a8fb | 1336 | int x, y; |
341f3858 | 1337 | enum window_part *part; |
f95464e4 | 1338 | }; |
67492200 GM |
1339 | |
1340 | static int | |
971de7fb | 1341 | check_window_containing (struct window *w, void *user_data) |
67492200 | 1342 | { |
f95464e4 | 1343 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
1344 | enum window_part found; |
1345 | int continue_p = 1; | |
67492200 | 1346 | |
f95464e4 | 1347 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1348 | if (found != ON_NOTHING) |
67492200 | 1349 | { |
341f3858 | 1350 | *cw->part = found; |
f95464e4 | 1351 | XSETWINDOW (*cw->window, w); |
7442878f | 1352 | continue_p = 0; |
67492200 | 1353 | } |
177c0ea7 | 1354 | |
7442878f | 1355 | return continue_p; |
67492200 GM |
1356 | } |
1357 | ||
1358 | ||
5500c422 | 1359 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1360 | return it as a Lisp_Object. |
1361 | ||
1362 | If X, Y is on one of the window's special `window_part' elements, | |
9173a8fb | 1363 | set *PART to the id of that element. |
949cf20f | 1364 | |
341f3858 | 1365 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1366 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1367 | ||
1368 | This function was previously implemented with a loop cycling over | |
1369 | windows with Fnext_window, and starting with the frame's selected | |
1370 | window. It turned out that this doesn't work with an | |
1371 | implementation of next_window using Vwindow_list, because | |
1372 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1373 | tree of F when this function is called asynchronously from | |
1374 | note_mouse_highlight. The original loop didn't terminate in this | |
1375 | case. */ | |
5500c422 | 1376 | |
7ab12479 | 1377 | Lisp_Object |
9173a8fb CY |
1378 | window_from_coordinates (struct frame *f, int x, int y, |
1379 | enum window_part *part, int tool_bar_p) | |
7ab12479 | 1380 | { |
67492200 | 1381 | Lisp_Object window; |
f95464e4 | 1382 | struct check_window_data cw; |
341f3858 KS |
1383 | enum window_part dummy; |
1384 | ||
1385 | if (part == 0) | |
1386 | part = &dummy; | |
5500c422 | 1387 | |
67492200 | 1388 | window = Qnil; |
9173a8fb | 1389 | cw.window = &window, cw.x = x, cw.y = y; cw.part = part; |
f95464e4 | 1390 | foreach_window (f, check_window_containing, &cw); |
177c0ea7 | 1391 | |
67492200 GM |
1392 | /* If not found above, see if it's in the tool bar window, if a tool |
1393 | bar exists. */ | |
1394 | if (NILP (window) | |
1395 | && tool_bar_p | |
e69b0960 DA |
1396 | && WINDOWP (f->tool_bar_window) |
1397 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 | |
1398 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), x, y) | |
7442878f | 1399 | != ON_NOTHING)) |
5500c422 | 1400 | { |
341f3858 | 1401 | *part = ON_TEXT; |
e69b0960 | 1402 | window = f->tool_bar_window; |
5500c422 | 1403 | } |
37962e60 | 1404 | |
67492200 | 1405 | return window; |
7ab12479 JB |
1406 | } |
1407 | ||
ab17c3f2 | 1408 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 | 1409 | doc: /* Return window containing coordinates X and Y on FRAME. |
496e208e | 1410 | FRAME must be a live frame and defaults to the selected one. |
fdb82f93 PJ |
1411 | The top left corner of the frame is considered to be row 0, |
1412 | column 0. */) | |
5842a27b | 1413 | (Lisp_Object x, Lisp_Object y, Lisp_Object frame) |
7ab12479 | 1414 | { |
d9f07150 | 1415 | struct frame *f = decode_live_frame (frame); |
7ab12479 | 1416 | |
5500c422 | 1417 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1418 | CHECK_NUMBER_OR_FLOAT (x); |
1419 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1420 | |
177c0ea7 | 1421 | return window_from_coordinates (f, |
2c77cf3b RS |
1422 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1423 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1424 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1425 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
9173a8fb | 1426 | 0, 0); |
7ab12479 JB |
1427 | } |
1428 | ||
1429 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1430 | doc: /* Return current value of point in WINDOW. |
496e208e | 1431 | WINDOW must be a live window and defaults to the selected one. |
c85322d0 | 1432 | |
5481664a MR |
1433 | For a nonselected window, this is the value point would have if that |
1434 | window were selected. | |
1435 | ||
1436 | Note that, when WINDOW is selected, the value returned is the same as | |
1437 | that returned by `point' for WINDOW's buffer. It would be more strictly | |
1438 | correct to return the `top-level' value of `point', outside of any | |
1439 | `save-excursion' forms. But that is hard to define. */) | |
5842a27b | 1440 | (Lisp_Object window) |
7ab12479 | 1441 | { |
52162052 | 1442 | register struct window *w = decode_live_window (window); |
7ab12479 | 1443 | |
5481664a MR |
1444 | if (w == XWINDOW (selected_window)) |
1445 | return make_number (BUF_PT (XBUFFER (w->buffer))); | |
1446 | else | |
1447 | return Fmarker_position (w->pointm); | |
7ab12479 JB |
1448 | } |
1449 | ||
1450 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1451 | doc: /* Return position at which display currently starts in WINDOW. |
496e208e | 1452 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 1453 | This is updated by redisplay or by calling `set-window-start'. */) |
5842a27b | 1454 | (Lisp_Object window) |
7ab12479 | 1455 | { |
52162052 | 1456 | return Fmarker_position (decode_live_window (window)->start); |
7ab12479 JB |
1457 | } |
1458 | ||
8646118f RS |
1459 | /* This is text temporarily removed from the doc string below. |
1460 | ||
fdb82f93 PJ |
1461 | This function returns nil if the position is not currently known. |
1462 | That happens when redisplay is preempted and doesn't finish. | |
1463 | If in that case you want to compute where the end of the window would | |
1464 | have been if redisplay had finished, do this: | |
1465 | (save-excursion | |
1466 | (goto-char (window-start window)) | |
1467 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1468 | (point))") */ |
1469 | ||
478292ed | 1470 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1471 | doc: /* Return position at which display currently ends in WINDOW. |
496e208e | 1472 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1473 | This is updated by redisplay, when it runs to completion. |
1474 | Simply changing the buffer text or setting `window-start' | |
1475 | does not update this value. | |
87e68db4 | 1476 | Return nil if there is no recorded value. (This can happen if the |
a0a37a6f | 1477 | last redisplay of WINDOW was preempted, and did not finish.) |
fdb82f93 PJ |
1478 | If UPDATE is non-nil, compute the up-to-date position |
1479 | if it isn't already recorded. */) | |
5842a27b | 1480 | (Lisp_Object window, Lisp_Object update) |
7ab12479 JB |
1481 | { |
1482 | Lisp_Object value; | |
52162052 | 1483 | struct window *w = decode_live_window (window); |
5a41ab94 | 1484 | Lisp_Object buf; |
31790df3 | 1485 | struct buffer *b; |
5a41ab94 | 1486 | |
d3d50620 | 1487 | buf = w->buffer; |
b7826503 | 1488 | CHECK_BUFFER (buf); |
b3a10345 | 1489 | b = XBUFFER (buf); |
5a41ab94 | 1490 | |
8646118f | 1491 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1492 | /* If we don't know the end position, return nil. |
1493 | The user can compute it with vertical-motion if he wants to. | |
1494 | It would be nicer to do it automatically, | |
1495 | but that's so slow that it would probably bother people. */ | |
d3d50620 | 1496 | if (NILP (w->window_end_valid)) |
7250968e | 1497 | return Qnil; |
8646118f | 1498 | #endif |
7250968e | 1499 | |
478292ed | 1500 | if (! NILP (update) |
dca778d5 | 1501 | && (windows_or_buffers_changed || NILP (w->window_end_valid)) |
41791a20 | 1502 | && !noninteractive) |
478292ed | 1503 | { |
cbc099e5 | 1504 | struct text_pos startp; |
4c1acb95 | 1505 | ptrdiff_t charpos = marker_position (w->start); |
cbc099e5 | 1506 | struct it it; |
b3a10345 | 1507 | struct buffer *old_buffer = NULL; |
57b3e30b | 1508 | void *itdata = NULL; |
b3a10345 KS |
1509 | |
1510 | /* Cannot use Fvertical_motion because that function doesn't | |
1511 | cope with variable-height lines. */ | |
1512 | if (b != current_buffer) | |
1513 | { | |
1514 | old_buffer = current_buffer; | |
1515 | set_buffer_internal (b); | |
1516 | } | |
2d6d9df0 GM |
1517 | |
1518 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1519 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1520 | `-l' containing a call to `rmail' with subsequent other |
1521 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1522 | rmail had already narrowed the buffer. */ |
4c1acb95 | 1523 | if (charpos < BEGV) |
cbc099e5 | 1524 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
4c1acb95 | 1525 | else if (charpos > ZV) |
cbc099e5 | 1526 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1527 | else |
d3d50620 | 1528 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
cbc099e5 | 1529 | |
57b3e30b | 1530 | itdata = bidi_shelve_cache (); |
cbc099e5 GM |
1531 | start_display (&it, w, startp); |
1532 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1533 | if (it.current_y < it.last_visible_y) |
1534 | move_it_past_eol (&it); | |
cbc099e5 | 1535 | value = make_number (IT_CHARPOS (it)); |
35928349 | 1536 | bidi_unshelve_cache (itdata, 0); |
177c0ea7 | 1537 | |
99593a9d GM |
1538 | if (old_buffer) |
1539 | set_buffer_internal (old_buffer); | |
478292ed RS |
1540 | } |
1541 | else | |
d3d50620 | 1542 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1543 | |
1544 | return value; | |
1545 | } | |
1546 | ||
a7ca3326 | 1547 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, |
a0a37a6f | 1548 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
52162052 | 1549 | WINDOW must be a live window and defaults to the selected one. |
a0a37a6f | 1550 | Return POS. */) |
5842a27b | 1551 | (Lisp_Object window, Lisp_Object pos) |
7ab12479 | 1552 | { |
52162052 | 1553 | register struct window *w = decode_live_window (window); |
7ab12479 | 1554 | |
b7826503 | 1555 | CHECK_NUMBER_COERCE_MARKER (pos); |
799417bd | 1556 | |
5481664a MR |
1557 | if (w == XWINDOW (selected_window)) |
1558 | { | |
1559 | if (XBUFFER (w->buffer) == current_buffer) | |
1560 | Fgoto_char (pos); | |
1561 | else | |
1562 | { | |
1563 | struct buffer *old_buffer = current_buffer; | |
1564 | ||
1565 | set_buffer_internal (XBUFFER (w->buffer)); | |
1566 | Fgoto_char (pos); | |
1567 | set_buffer_internal (old_buffer); | |
1568 | } | |
1569 | } | |
1570 | else | |
1571 | { | |
1572 | set_marker_restricted (w->pointm, pos, w->buffer); | |
1573 | /* We have to make sure that redisplay updates the window to show | |
1574 | the new value of point. */ | |
1575 | ++windows_or_buffers_changed; | |
1576 | } | |
177c0ea7 | 1577 | |
7ab12479 JB |
1578 | return pos; |
1579 | } | |
1580 | ||
1581 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1582 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
52162052 MR |
1583 | WINDOW must be a live window and defaults to the selected one. Return |
1584 | POS. Optional third arg NOFORCE non-nil inhibits next redisplay from | |
d653c8cc | 1585 | overriding motion of point in order to display at this exact start. */) |
5842a27b | 1586 | (Lisp_Object window, Lisp_Object pos, Lisp_Object noforce) |
7ab12479 | 1587 | { |
52162052 | 1588 | register struct window *w = decode_live_window (window); |
7ab12479 | 1589 | |
b7826503 | 1590 | CHECK_NUMBER_COERCE_MARKER (pos); |
d3d50620 | 1591 | set_marker_restricted (w->start, pos, w->buffer); |
7ab12479 | 1592 | /* this is not right, but much easier than doing what is right. */ |
c98ff5dd | 1593 | w->start_at_line_beg = 0; |
265a9e55 | 1594 | if (NILP (noforce)) |
c98ff5dd DA |
1595 | w->force_start = 1; |
1596 | w->update_mode_line = 1; | |
80b00b08 DA |
1597 | w->last_modified = 0; |
1598 | w->last_overlay_modified = 0; | |
62c07cc7 JB |
1599 | if (!EQ (window, selected_window)) |
1600 | windows_or_buffers_changed++; | |
ce7fae7d | 1601 | |
7ab12479 JB |
1602 | return pos; |
1603 | } | |
1604 | ||
496e208e MR |
1605 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
1606 | Spos_visible_in_window_p, 0, 3, 0, | |
1607 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. | |
52162052 MR |
1608 | WINDOW must be a live window and defaults to the selected one. |
1609 | ||
1610 | Return nil if that position is scrolled vertically out of view. If a | |
1611 | character is only partially visible, nil is returned, unless the | |
1612 | optional argument PARTIALLY is non-nil. If POS is only out of view | |
1613 | because of horizontal scrolling, return non-nil. If POS is t, it | |
1614 | specifies the position of the last visible glyph in WINDOW. POS | |
1615 | defaults to point in WINDOW; WINDOW defaults to the selected window. | |
496e208e MR |
1616 | |
1617 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
1618 | return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), | |
1619 | where X and Y are the pixel coordinates relative to the top left corner | |
1620 | of the window. The remaining elements are omitted if the character after | |
1621 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
1622 | off-window at the top and bottom of the row, ROWH is the height of the | |
1623 | display row, and VPOS is the row number (0-based) containing POS. */) | |
1624 | (Lisp_Object pos, Lisp_Object window, Lisp_Object partially) | |
1625 | { | |
1626 | register struct window *w; | |
1627 | register EMACS_INT posint; | |
1628 | register struct buffer *buf; | |
1629 | struct text_pos top; | |
1630 | Lisp_Object in_window = Qnil; | |
1631 | int rtop, rbot, rowh, vpos, fully_p = 1; | |
1632 | int x, y; | |
1633 | ||
52162052 | 1634 | w = decode_live_window (window); |
d3d50620 DA |
1635 | buf = XBUFFER (w->buffer); |
1636 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
496e208e MR |
1637 | |
1638 | if (EQ (pos, Qt)) | |
1639 | posint = -1; | |
1640 | else if (!NILP (pos)) | |
1641 | { | |
1642 | CHECK_NUMBER_COERCE_MARKER (pos); | |
1643 | posint = XINT (pos); | |
1644 | } | |
1645 | else if (w == XWINDOW (selected_window)) | |
1646 | posint = PT; | |
1647 | else | |
4c1acb95 | 1648 | posint = marker_position (w->pointm); |
496e208e MR |
1649 | |
1650 | /* If position is above window start or outside buffer boundaries, | |
1651 | or if window start is out of range, position is not visible. */ | |
1652 | if ((EQ (pos, Qt) | |
1653 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
1654 | && CHARPOS (top) >= BUF_BEGV (buf) | |
1655 | && CHARPOS (top) <= BUF_ZV (buf) | |
1656 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) | |
1657 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) | |
1658 | in_window = Qt; | |
1659 | ||
1660 | if (!NILP (in_window) && !NILP (partially)) | |
1661 | { | |
1662 | Lisp_Object part = Qnil; | |
1663 | if (!fully_p) | |
1479c557 | 1664 | part = list4i (rtop, rbot, rowh, vpos); |
496e208e MR |
1665 | in_window = Fcons (make_number (x), |
1666 | Fcons (make_number (y), part)); | |
1667 | } | |
1668 | ||
1669 | return in_window; | |
1670 | } | |
1671 | ||
1672 | DEFUN ("window-line-height", Fwindow_line_height, | |
1673 | Swindow_line_height, 0, 2, 0, | |
1674 | doc: /* Return height in pixels of text line LINE in window WINDOW. | |
52162052 | 1675 | WINDOW must be a live window and defaults to the selected one. |
496e208e MR |
1676 | |
1677 | Return height of current line if LINE is omitted or nil. Return height of | |
1678 | header or mode line if LINE is `header-line' or `mode-line'. | |
1679 | Otherwise, LINE is a text line number starting from 0. A negative number | |
1680 | counts from the end of the window. | |
1681 | ||
1682 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height | |
1683 | in pixels of the visible part of the line, VPOS and YPOS are the | |
1684 | vertical position in lines and pixels of the line, relative to the top | |
1685 | of the first text line, and OFFBOT is the number of off-window pixels at | |
1686 | the bottom of the text line. If there are off-window pixels at the top | |
1687 | of the (first) text line, YPOS is negative. | |
1688 | ||
1689 | Return nil if window display is not up-to-date. In that case, use | |
1690 | `pos-visible-in-window-p' to obtain the information. */) | |
1691 | (Lisp_Object line, Lisp_Object window) | |
1692 | { | |
1693 | register struct window *w; | |
1694 | register struct buffer *b; | |
1695 | struct glyph_row *row, *end_row; | |
d311d28c PE |
1696 | int max_y, crop, i; |
1697 | EMACS_INT n; | |
496e208e | 1698 | |
52162052 | 1699 | w = decode_live_window (window); |
496e208e MR |
1700 | |
1701 | if (noninteractive || w->pseudo_window_p) | |
1702 | return Qnil; | |
1703 | ||
d3d50620 DA |
1704 | CHECK_BUFFER (w->buffer); |
1705 | b = XBUFFER (w->buffer); | |
496e208e MR |
1706 | |
1707 | /* Fail if current matrix is not up-to-date. */ | |
d3d50620 | 1708 | if (NILP (w->window_end_valid) |
496e208e MR |
1709 | || current_buffer->clip_changed |
1710 | || current_buffer->prevent_redisplay_optimizations_p | |
80b00b08 DA |
1711 | || w->last_modified < BUF_MODIFF (b) |
1712 | || w->last_overlay_modified < BUF_OVERLAY_MODIFF (b)) | |
496e208e MR |
1713 | return Qnil; |
1714 | ||
1715 | if (NILP (line)) | |
1716 | { | |
1717 | i = w->cursor.vpos; | |
1718 | if (i < 0 || i >= w->current_matrix->nrows | |
1719 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
1720 | return Qnil; | |
1721 | max_y = window_text_bottom_y (w); | |
1722 | goto found_row; | |
1723 | } | |
1724 | ||
1725 | if (EQ (line, Qheader_line)) | |
1726 | { | |
1727 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) | |
1728 | return Qnil; | |
1729 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
1479c557 | 1730 | return row->enabled_p ? list4i (row->height, 0, 0, 0) : Qnil; |
496e208e MR |
1731 | } |
1732 | ||
1733 | if (EQ (line, Qmode_line)) | |
1734 | { | |
1735 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); | |
89bc0592 | 1736 | return (row->enabled_p ? |
1479c557 PE |
1737 | list4i (row->height, |
1738 | 0, /* not accurate */ | |
1739 | (WINDOW_HEADER_LINE_HEIGHT (w) | |
1740 | + window_text_bottom_y (w)), | |
1741 | 0) | |
89bc0592 | 1742 | : Qnil); |
496e208e MR |
1743 | } |
1744 | ||
1745 | CHECK_NUMBER (line); | |
1746 | n = XINT (line); | |
1747 | ||
1748 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
1749 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
1750 | max_y = window_text_bottom_y (w); | |
1751 | i = 0; | |
1752 | ||
1753 | while ((n < 0 || i < n) | |
1754 | && row <= end_row && row->enabled_p | |
1755 | && row->y + row->height < max_y) | |
1756 | row++, i++; | |
1757 | ||
1758 | if (row > end_row || !row->enabled_p) | |
1759 | return Qnil; | |
1760 | ||
1761 | if (++n < 0) | |
1762 | { | |
1763 | if (-n > i) | |
1764 | return Qnil; | |
1765 | row += n; | |
1766 | i += n; | |
1767 | } | |
1768 | ||
1769 | found_row: | |
1770 | crop = max (0, (row->y + row->height) - max_y); | |
1479c557 | 1771 | return list4i (row->height + min (0, row->y) - crop, i, row->y, crop); |
496e208e | 1772 | } |
d653c8cc | 1773 | |
a7ca3326 | 1774 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, |
d653c8cc MR |
1775 | 0, 1, 0, |
1776 | doc: /* Return non-nil when WINDOW is dedicated to its buffer. | |
12bb3111 | 1777 | More precisely, return the value assigned by the last call of |
7bfac547 MR |
1778 | `set-window-dedicated-p' for WINDOW. Return nil if that function was |
1779 | never called with WINDOW as its argument, or the value set by that | |
52162052 MR |
1780 | function was internally reset since its last call. WINDOW must be a |
1781 | live window and defaults to the selected one. | |
7bfac547 MR |
1782 | |
1783 | When a window is dedicated to its buffer, `display-buffer' will refrain | |
1784 | from displaying another buffer in it. `get-lru-window' and | |
1785 | `get-largest-window' treat dedicated windows specially. | |
1786 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1787 | `kill-buffer' can delete a dedicated window and the containing frame. | |
1788 | ||
1789 | Functions like `set-window-buffer' may change the buffer displayed by a | |
1790 | window, unless that window is "strongly" dedicated to its buffer, that | |
1791 | is the value returned by `window-dedicated-p' is t. */) | |
5842a27b | 1792 | (Lisp_Object window) |
7ab12479 | 1793 | { |
52162052 | 1794 | return decode_live_window (window)->dedicated; |
7ab12479 JB |
1795 | } |
1796 | ||
d207b766 RS |
1797 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1798 | Sset_window_dedicated_p, 2, 2, 0, | |
d653c8cc | 1799 | doc: /* Mark WINDOW as dedicated according to FLAG. |
496e208e MR |
1800 | WINDOW must be a live window and defaults to the selected one. FLAG |
1801 | non-nil means mark WINDOW as dedicated to its buffer. FLAG nil means | |
1802 | mark WINDOW as non-dedicated. Return FLAG. | |
d653c8cc | 1803 | |
7bfac547 MR |
1804 | When a window is dedicated to its buffer, `display-buffer' will refrain |
1805 | from displaying another buffer in it. `get-lru-window' and | |
1806 | `get-largest-window' treat dedicated windows specially. | |
496e208e MR |
1807 | `delete-windows-on', `replace-buffer-in-windows', `quit-window', |
1808 | `quit-restore-window' and `kill-buffer' can delete a dedicated window | |
1809 | and the containing frame. | |
7bfac547 MR |
1810 | |
1811 | As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to | |
1812 | its buffer. Functions like `set-window-buffer' may change the buffer | |
1813 | displayed by a window, unless that window is strongly dedicated to its | |
1814 | buffer. If and when `set-window-buffer' displays another buffer in a | |
496e208e | 1815 | window, it also makes sure that the window is no more dedicated. */) |
5842a27b | 1816 | (Lisp_Object window, Lisp_Object flag) |
7ab12479 | 1817 | { |
e8c17b81 PE |
1818 | wset_dedicated (decode_live_window (window), flag); |
1819 | return flag; | |
7ab12479 JB |
1820 | } |
1821 | ||
496e208e MR |
1822 | DEFUN ("window-prev-buffers", Fwindow_prev_buffers, Swindow_prev_buffers, |
1823 | 0, 1, 0, | |
1824 | doc: /* Return buffers previously shown in WINDOW. | |
1825 | WINDOW must be a live window and defaults to the selected one. | |
1826 | ||
94e0933e CY |
1827 | The return value is a list of elements (BUFFER WINDOW-START POS), |
1828 | where BUFFER is a buffer, WINDOW-START is the start position of the | |
1829 | window for that buffer, and POS is a window-specific point value. */) | |
496e208e MR |
1830 | (Lisp_Object window) |
1831 | { | |
52162052 | 1832 | return decode_live_window (window)->prev_buffers; |
496e208e MR |
1833 | } |
1834 | ||
1835 | DEFUN ("set-window-prev-buffers", Fset_window_prev_buffers, | |
1836 | Sset_window_prev_buffers, 2, 2, 0, | |
1837 | doc: /* Set WINDOW's previous buffers to PREV-BUFFERS. | |
94e0933e | 1838 | WINDOW must be a live window and defaults to the selected one. |
496e208e | 1839 | |
94e0933e CY |
1840 | PREV-BUFFERS should be a list of elements (BUFFER WINDOW-START POS), |
1841 | where BUFFER is a buffer, WINDOW-START is the start position of the | |
1842 | window for that buffer, and POS is a window-specific point value. */) | |
496e208e MR |
1843 | (Lisp_Object window, Lisp_Object prev_buffers) |
1844 | { | |
e8c17b81 PE |
1845 | wset_prev_buffers (decode_live_window (window), prev_buffers); |
1846 | return prev_buffers; | |
496e208e MR |
1847 | } |
1848 | ||
1849 | DEFUN ("window-next-buffers", Fwindow_next_buffers, Swindow_next_buffers, | |
1850 | 0, 1, 0, | |
1851 | doc: /* Return list of buffers recently re-shown in WINDOW. | |
1852 | WINDOW must be a live window and defaults to the selected one. */) | |
1853 | (Lisp_Object window) | |
1854 | { | |
52162052 | 1855 | return decode_live_window (window)->next_buffers; |
496e208e MR |
1856 | } |
1857 | ||
1858 | DEFUN ("set-window-next-buffers", Fset_window_next_buffers, | |
1859 | Sset_window_next_buffers, 2, 2, 0, | |
1860 | doc: /* Set WINDOW's next buffers to NEXT-BUFFERS. | |
94e0933e CY |
1861 | WINDOW must be a live window and defaults to the selected one. |
1862 | NEXT-BUFFERS should be a list of buffers. */) | |
496e208e MR |
1863 | (Lisp_Object window, Lisp_Object next_buffers) |
1864 | { | |
e8c17b81 PE |
1865 | wset_next_buffers (decode_live_window (window), next_buffers); |
1866 | return next_buffers; | |
496e208e | 1867 | } |
d653c8cc | 1868 | |
cfbb2395 JB |
1869 | DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters, |
1870 | 0, 1, 0, | |
d653c8cc | 1871 | doc: /* Return the parameters of WINDOW and their values. |
52162052 MR |
1872 | WINDOW must be a valid window and defaults to the selected one. The |
1873 | return value is a list of elements of the form (PARAMETER . VALUE). */) | |
5842a27b | 1874 | (Lisp_Object window) |
cfbb2395 | 1875 | { |
52162052 | 1876 | return Fcopy_alist (decode_valid_window (window)->window_parameters); |
cfbb2395 JB |
1877 | } |
1878 | ||
1879 | DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter, | |
1880 | 2, 2, 0, | |
d653c8cc | 1881 | doc: /* Return WINDOW's value for PARAMETER. |
a8c729af | 1882 | WINDOW can be any window and defaults to the selected one. */) |
5842a27b | 1883 | (Lisp_Object window, Lisp_Object parameter) |
cfbb2395 | 1884 | { |
927abf37 JB |
1885 | Lisp_Object result; |
1886 | ||
a8c729af | 1887 | result = Fassq (parameter, decode_any_window (window)->window_parameters); |
927abf37 | 1888 | return CDR_SAFE (result); |
cfbb2395 JB |
1889 | } |
1890 | ||
cfbb2395 JB |
1891 | DEFUN ("set-window-parameter", Fset_window_parameter, |
1892 | Sset_window_parameter, 3, 3, 0, | |
d653c8cc | 1893 | doc: /* Set WINDOW's value of PARAMETER to VALUE. |
a8c729af | 1894 | WINDOW can be any window and defaults to the selected one. |
52162052 | 1895 | Return VALUE. */) |
5842a27b | 1896 | (Lisp_Object window, Lisp_Object parameter, Lisp_Object value) |
cfbb2395 | 1897 | { |
a8c729af | 1898 | register struct window *w = decode_any_window (window); |
cfbb2395 JB |
1899 | Lisp_Object old_alist_elt; |
1900 | ||
d3d50620 | 1901 | old_alist_elt = Fassq (parameter, w->window_parameters); |
12bb3111 | 1902 | if (NILP (old_alist_elt)) |
e8c17b81 PE |
1903 | wset_window_parameters |
1904 | (w, Fcons (Fcons (parameter, value), w->window_parameters)); | |
cfbb2395 JB |
1905 | else |
1906 | Fsetcdr (old_alist_elt, value); | |
927abf37 | 1907 | return value; |
cfbb2395 JB |
1908 | } |
1909 | ||
7ab12479 JB |
1910 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, |
1911 | 0, 1, 0, | |
c85322d0 | 1912 | doc: /* Return the display-table that WINDOW is using. |
52162052 | 1913 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 1914 | (Lisp_Object window) |
7ab12479 | 1915 | { |
52162052 | 1916 | return decode_live_window (window)->display_table; |
7ab12479 JB |
1917 | } |
1918 | ||
5500c422 GM |
1919 | /* Get the display table for use on window W. This is either W's |
1920 | display table or W's buffer's display table. Ignore the specified | |
1921 | tables if they are not valid; if no valid table is specified, | |
1922 | return 0. */ | |
7ab12479 | 1923 | |
319315f1 | 1924 | struct Lisp_Char_Table * |
971de7fb | 1925 | window_display_table (struct window *w) |
7ab12479 | 1926 | { |
c756cdbe GM |
1927 | struct Lisp_Char_Table *dp = NULL; |
1928 | ||
d3d50620 DA |
1929 | if (DISP_TABLE_P (w->display_table)) |
1930 | dp = XCHAR_TABLE (w->display_table); | |
1931 | else if (BUFFERP (w->buffer)) | |
c756cdbe | 1932 | { |
d3d50620 | 1933 | struct buffer *b = XBUFFER (w->buffer); |
177c0ea7 | 1934 | |
4b4deea2 TT |
1935 | if (DISP_TABLE_P (BVAR (b, display_table))) |
1936 | dp = XCHAR_TABLE (BVAR (b, display_table)); | |
c756cdbe GM |
1937 | else if (DISP_TABLE_P (Vstandard_display_table)) |
1938 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1939 | } | |
171d003c | 1940 | |
c756cdbe | 1941 | return dp; |
7ab12479 JB |
1942 | } |
1943 | ||
3a2712f9 | 1944 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
52162052 MR |
1945 | doc: /* Set WINDOW's display-table to TABLE. |
1946 | WINDOW must be a live window and defaults to the selected one. */) | |
5842a27b | 1947 | (register Lisp_Object window, Lisp_Object table) |
7ab12479 | 1948 | { |
e8c17b81 PE |
1949 | wset_display_table (decode_live_window (window), table); |
1950 | return table; | |
7ab12479 JB |
1951 | } |
1952 | \f | |
562dd5e9 | 1953 | /* Record info on buffer window W is displaying |
7ab12479 | 1954 | when it is about to cease to display that buffer. */ |
dfcf069d | 1955 | static void |
971de7fb | 1956 | unshow_buffer (register struct window *w) |
7ab12479 | 1957 | { |
12cae7c0 | 1958 | Lisp_Object buf; |
b73ea88e | 1959 | struct buffer *b; |
7ab12479 | 1960 | |
d3d50620 | 1961 | buf = w->buffer; |
b73ea88e | 1962 | b = XBUFFER (buf); |
d3d50620 | 1963 | if (b != XMARKER (w->pointm)->buffer) |
1088b922 | 1964 | emacs_abort (); |
7ab12479 | 1965 | |
573f41ab | 1966 | #if 0 |
7ab12479 | 1967 | if (w == XWINDOW (selected_window) |
d3d50620 | 1968 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) |
7ab12479 JB |
1969 | /* Do this except when the selected window's buffer |
1970 | is being removed from some other window. */ | |
573f41ab RS |
1971 | #endif |
1972 | /* last_window_start records the start position that this buffer | |
1973 | had in the last window to be disconnected from it. | |
1974 | Now that this statement is unconditional, | |
1975 | it is possible for the buffer to be displayed in the | |
1976 | selected window, while last_window_start reflects another | |
1977 | window which was recently showing the same buffer. | |
1978 | Some people might say that might be a good thing. Let's see. */ | |
d3d50620 | 1979 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1980 | |
1981 | /* Point in the selected window's buffer | |
1982 | is actually stored in that buffer, and the window's pointm isn't used. | |
1983 | So don't clobber point in that buffer. */ | |
d3d50620 | 1984 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
c4b6914d MR |
1985 | /* Don't clobber point in current buffer either (this could be |
1986 | useful in connection with bug#12208). | |
1987 | && XBUFFER (buf) != current_buffer */ | |
719eaeb1 | 1988 | /* This line helps to fix Horsley's testbug.el bug. */ |
4b4deea2 TT |
1989 | && !(WINDOWP (BVAR (b, last_selected_window)) |
1990 | && w != XWINDOW (BVAR (b, last_selected_window)) | |
d3d50620 | 1991 | && EQ (buf, XWINDOW (BVAR (b, last_selected_window))->buffer))) |
b73ea88e RS |
1992 | temp_set_point_both (b, |
1993 | clip_to_bounds (BUF_BEGV (b), | |
4c1acb95 | 1994 | marker_position (w->pointm), |
b73ea88e RS |
1995 | BUF_ZV (b)), |
1996 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
d3d50620 | 1997 | marker_byte_position (w->pointm), |
b73ea88e | 1998 | BUF_ZV_BYTE (b))); |
177c0ea7 | 1999 | |
4b4deea2 TT |
2000 | if (WINDOWP (BVAR (b, last_selected_window)) |
2001 | && w == XWINDOW (BVAR (b, last_selected_window))) | |
39eb03f1 | 2002 | bset_last_selected_window (b, Qnil); |
7ab12479 JB |
2003 | } |
2004 | ||
1a13852e MR |
2005 | /* Put NEW into the window structure in place of OLD. SETFLAG zero |
2006 | means change window structure only. Otherwise store geometry and | |
2007 | other settings as well. */ | |
dfcf069d | 2008 | static void |
1a13852e | 2009 | replace_window (Lisp_Object old, Lisp_Object new, int setflag) |
7ab12479 JB |
2010 | { |
2011 | register Lisp_Object tem; | |
1a13852e | 2012 | register struct window *o = XWINDOW (old), *n = XWINDOW (new); |
7ab12479 | 2013 | |
1a13852e MR |
2014 | /* If OLD is its frame's root window, then NEW is the new |
2015 | root window for that frame. */ | |
d3d50620 | 2016 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
f00af5b1 | 2017 | fset_root_window (XFRAME (o->frame), new); |
077288cf DA |
2018 | |
2019 | if (setflag) | |
2020 | { | |
e8c17b81 PE |
2021 | wset_left_col (n, o->left_col); |
2022 | wset_top_line (n, o->top_line); | |
2023 | wset_total_cols (n, o->total_cols); | |
2024 | wset_total_lines (n, o->total_lines); | |
2025 | wset_normal_cols (n, o->normal_cols); | |
2026 | wset_normal_cols (o, make_float (1.0)); | |
2027 | wset_normal_lines (n, o->normal_lines); | |
2028 | wset_normal_lines (o, make_float (1.0)); | |
1a13852e MR |
2029 | n->desired_matrix = n->current_matrix = 0; |
2030 | n->vscroll = 0; | |
2031 | memset (&n->cursor, 0, sizeof (n->cursor)); | |
2032 | memset (&n->last_cursor, 0, sizeof (n->last_cursor)); | |
2033 | memset (&n->phys_cursor, 0, sizeof (n->phys_cursor)); | |
2034 | n->phys_cursor_type = -1; | |
2035 | n->phys_cursor_width = -1; | |
2036 | n->must_be_updated_p = 0; | |
2037 | n->pseudo_window_p = 0; | |
e8c17b81 PE |
2038 | wset_window_end_vpos (n, make_number (0)); |
2039 | wset_window_end_pos (n, make_number (0)); | |
2040 | wset_window_end_valid (n, Qnil); | |
1a13852e | 2041 | n->frozen_window_start_p = 0; |
1a13852e MR |
2042 | } |
2043 | ||
d3d50620 | 2044 | tem = o->next; |
e8c17b81 | 2045 | wset_next (n, tem); |
265a9e55 | 2046 | if (!NILP (tem)) |
e8c17b81 | 2047 | wset_prev (XWINDOW (tem), new); |
7ab12479 | 2048 | |
d3d50620 | 2049 | tem = o->prev; |
e8c17b81 | 2050 | wset_prev (n, tem); |
265a9e55 | 2051 | if (!NILP (tem)) |
e8c17b81 | 2052 | wset_next (XWINDOW (tem), new); |
7ab12479 | 2053 | |
d3d50620 | 2054 | tem = o->parent; |
e8c17b81 | 2055 | wset_parent (n, tem); |
265a9e55 | 2056 | if (!NILP (tem)) |
7ab12479 | 2057 | { |
d3d50620 | 2058 | if (EQ (XWINDOW (tem)->vchild, old)) |
e8c17b81 | 2059 | wset_vchild (XWINDOW (tem), new); |
d3d50620 | 2060 | if (EQ (XWINDOW (tem)->hchild, old)) |
e8c17b81 | 2061 | wset_hchild (XWINDOW (tem), new); |
7ab12479 | 2062 | } |
1a13852e MR |
2063 | } |
2064 | ||
2065 | /* If window WINDOW and its parent window are iso-combined, merge | |
2066 | WINDOW's children into those of its parent window and mark WINDOW as | |
2067 | deleted. */ | |
2068 | ||
2069 | static void | |
2070 | recombine_windows (Lisp_Object window) | |
2071 | { | |
2072 | struct window *w, *p, *c; | |
2073 | Lisp_Object parent, child; | |
2074 | int horflag; | |
2075 | ||
2076 | w = XWINDOW (window); | |
d3d50620 DA |
2077 | parent = w->parent; |
2078 | if (!NILP (parent) && NILP (w->combination_limit)) | |
1a13852e MR |
2079 | { |
2080 | p = XWINDOW (parent); | |
d3d50620 DA |
2081 | if (((!NILP (p->vchild) && !NILP (w->vchild)) |
2082 | || (!NILP (p->hchild) && !NILP (w->hchild)))) | |
1a13852e MR |
2083 | /* WINDOW and PARENT are both either a vertical or a horizontal |
2084 | combination. */ | |
2085 | { | |
d3d50620 DA |
2086 | horflag = NILP (w->vchild); |
2087 | child = horflag ? w->hchild : w->vchild; | |
1a13852e MR |
2088 | c = XWINDOW (child); |
2089 | ||
2090 | /* Splice WINDOW's children into its parent's children and | |
2091 | assign new normal sizes. */ | |
d3d50620 | 2092 | if (NILP (w->prev)) |
1a13852e | 2093 | if (horflag) |
e8c17b81 | 2094 | wset_hchild (p, child); |
1a13852e | 2095 | else |
e8c17b81 | 2096 | wset_vchild (p, child); |
1a13852e MR |
2097 | else |
2098 | { | |
e8c17b81 PE |
2099 | wset_prev (c, w->prev); |
2100 | wset_next (XWINDOW (w->prev), child); | |
1a13852e MR |
2101 | } |
2102 | ||
2103 | while (c) | |
2104 | { | |
e8c17b81 | 2105 | wset_parent (c, parent); |
1a13852e MR |
2106 | |
2107 | if (horflag) | |
e8c17b81 PE |
2108 | wset_normal_cols (c, |
2109 | make_float (XFLOATINT (c->total_cols) | |
2110 | / XFLOATINT (p->total_cols))); | |
1a13852e | 2111 | else |
e8c17b81 PE |
2112 | wset_normal_lines (c, |
2113 | make_float (XFLOATINT (c->total_lines) | |
2114 | / XFLOATINT (p->total_lines))); | |
1a13852e | 2115 | |
d3d50620 | 2116 | if (NILP (c->next)) |
1a13852e | 2117 | { |
d3d50620 | 2118 | if (!NILP (w->next)) |
1a13852e | 2119 | { |
e8c17b81 PE |
2120 | wset_next (c, w->next); |
2121 | wset_prev (XWINDOW (c->next), child); | |
1a13852e MR |
2122 | } |
2123 | ||
2124 | c = 0; | |
2125 | } | |
2126 | else | |
2127 | { | |
d3d50620 | 2128 | child = c->next; |
1a13852e MR |
2129 | c = XWINDOW (child); |
2130 | } | |
2131 | } | |
7ab12479 | 2132 | |
1a13852e | 2133 | /* WINDOW can be deleted now. */ |
e8c17b81 PE |
2134 | wset_vchild (w, Qnil); |
2135 | wset_hchild (w, Qnil); | |
1a13852e MR |
2136 | } |
2137 | } | |
7ab12479 | 2138 | } |
6198ccd0 MR |
2139 | |
2140 | /* If WINDOW can be deleted, delete it. */ | |
4475bec4 | 2141 | static void |
6198ccd0 MR |
2142 | delete_deletable_window (Lisp_Object window) |
2143 | { | |
2144 | if (!NILP (call1 (Qwindow_deletable_p, window))) | |
2145 | call1 (Qdelete_window, window); | |
2146 | } | |
1a13852e | 2147 | \f |
67492200 GM |
2148 | /*********************************************************************** |
2149 | Window List | |
2150 | ***********************************************************************/ | |
2151 | ||
f95464e4 GM |
2152 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
2153 | pointer. This is a callback function for foreach_window, used in | |
496e208e | 2154 | the window_list function. */ |
67492200 GM |
2155 | |
2156 | static int | |
971de7fb | 2157 | add_window_to_list (struct window *w, void *user_data) |
67492200 | 2158 | { |
f95464e4 | 2159 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
2160 | Lisp_Object window; |
2161 | XSETWINDOW (window, w); | |
212116d6 | 2162 | *list = Fcons (window, *list); |
67492200 GM |
2163 | return 1; |
2164 | } | |
2165 | ||
2166 | ||
2167 | /* Return a list of all windows, for use by next_window. If | |
2168 | Vwindow_list is a list, return that list. Otherwise, build a new | |
2169 | list, cache it in Vwindow_list, and return that. */ | |
2170 | ||
2171 | static Lisp_Object | |
971de7fb | 2172 | window_list (void) |
67492200 GM |
2173 | { |
2174 | if (!CONSP (Vwindow_list)) | |
2175 | { | |
5b04e9f9 | 2176 | Lisp_Object tail, frame; |
212116d6 | 2177 | |
67492200 | 2178 | Vwindow_list = Qnil; |
5b04e9f9 | 2179 | FOR_EACH_FRAME (tail, frame) |
212116d6 GM |
2180 | { |
2181 | Lisp_Object args[2]; | |
2182 | ||
2183 | /* We are visiting windows in canonical order, and add | |
2184 | new windows at the front of args[1], which means we | |
2185 | have to reverse this list at the end. */ | |
2186 | args[1] = Qnil; | |
5b04e9f9 | 2187 | foreach_window (XFRAME (frame), add_window_to_list, &args[1]); |
212116d6 GM |
2188 | args[0] = Vwindow_list; |
2189 | args[1] = Fnreverse (args[1]); | |
2190 | Vwindow_list = Fnconc (2, args); | |
2191 | } | |
67492200 | 2192 | } |
177c0ea7 | 2193 | |
67492200 GM |
2194 | return Vwindow_list; |
2195 | } | |
2196 | ||
2197 | ||
118ea242 GM |
2198 | /* Value is non-zero if WINDOW satisfies the constraints given by |
2199 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 2200 | |
118ea242 GM |
2201 | MINIBUF t means WINDOW may be minibuffer windows. |
2202 | `lambda' means WINDOW may not be a minibuffer window. | |
2203 | a window means a specific minibuffer window | |
67492200 | 2204 | |
118ea242 GM |
2205 | ALL_FRAMES t means search all frames, |
2206 | nil means search just current frame, | |
aa248733 MS |
2207 | `visible' means search just visible frames on the |
2208 | current terminal, | |
2209 | 0 means search visible and iconified frames on the | |
2210 | current terminal, | |
118ea242 GM |
2211 | a window means search the frame that window belongs to, |
2212 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
2213 | |
2214 | static int | |
971de7fb | 2215 | candidate_window_p (Lisp_Object window, Lisp_Object owindow, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 GM |
2216 | { |
2217 | struct window *w = XWINDOW (window); | |
d3d50620 | 2218 | struct frame *f = XFRAME (w->frame); |
67492200 GM |
2219 | int candidate_p = 1; |
2220 | ||
d3d50620 | 2221 | if (!BUFFERP (w->buffer)) |
67492200 GM |
2222 | candidate_p = 0; |
2223 | else if (MINI_WINDOW_P (w) | |
2224 | && (EQ (minibuf, Qlambda) | |
2225 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
2226 | { | |
2227 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
2228 | If it is a window, consider only that one. */ | |
2229 | candidate_p = 0; | |
2230 | } | |
118ea242 GM |
2231 | else if (EQ (all_frames, Qt)) |
2232 | candidate_p = 1; | |
67492200 | 2233 | else if (NILP (all_frames)) |
118ea242 | 2234 | { |
a54e2c05 | 2235 | eassert (WINDOWP (owindow)); |
d3d50620 | 2236 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); |
118ea242 | 2237 | } |
67492200 GM |
2238 | else if (EQ (all_frames, Qvisible)) |
2239 | { | |
2240 | FRAME_SAMPLE_VISIBILITY (f); | |
de509a60 | 2241 | candidate_p = FRAME_VISIBLE_P (f) |
d3d50620 | 2242 | && (FRAME_TERMINAL (XFRAME (w->frame)) |
de509a60 SM |
2243 | == FRAME_TERMINAL (XFRAME (selected_frame))); |
2244 | ||
67492200 GM |
2245 | } |
2246 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
2247 | { | |
2248 | FRAME_SAMPLE_VISIBILITY (f); | |
ca2d5566 SM |
2249 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
2250 | #ifdef HAVE_X_WINDOWS | |
2251 | /* Yuck!! If we've just created the frame and the | |
2252 | window-manager requested the user to place it | |
2253 | manually, the window may still not be considered | |
2254 | `visible'. I'd argue it should be at least | |
2255 | something like `iconified', but don't know how to do | |
2256 | that yet. --Stef */ | |
2257 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
2258 | && !f->output_data.x->has_been_visible) | |
2259 | #endif | |
de509a60 | 2260 | ) |
d3d50620 | 2261 | && (FRAME_TERMINAL (XFRAME (w->frame)) |
de509a60 | 2262 | == FRAME_TERMINAL (XFRAME (selected_frame))); |
67492200 | 2263 | } |
67492200 GM |
2264 | else if (WINDOWP (all_frames)) |
2265 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
d3d50620 DA |
2266 | || EQ (XWINDOW (all_frames)->frame, w->frame) |
2267 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 | 2268 | else if (FRAMEP (all_frames)) |
d3d50620 | 2269 | candidate_p = EQ (all_frames, w->frame); |
67492200 GM |
2270 | |
2271 | return candidate_p; | |
2272 | } | |
2273 | ||
2274 | ||
2275 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
aa248733 MS |
2276 | Fwindow_list. See candidate_window_p for the meaning of WINDOW, |
2277 | MINIBUF, and ALL_FRAMES. */ | |
67492200 GM |
2278 | |
2279 | static void | |
971de7fb | 2280 | decode_next_window_args (Lisp_Object *window, Lisp_Object *minibuf, Lisp_Object *all_frames) |
67492200 | 2281 | { |
b9e9df47 | 2282 | struct window *w = decode_live_window (*window); |
177c0ea7 | 2283 | |
b6a9e8b1 | 2284 | XSETWINDOW (*window, w); |
67492200 GM |
2285 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
2286 | does. */ | |
2287 | if (NILP (*minibuf)) | |
2288 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
2289 | else if (!EQ (*minibuf, Qt)) | |
2290 | *minibuf = Qlambda; | |
177c0ea7 | 2291 | |
67492200 GM |
2292 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
2293 | => count none of them, or a specific minibuffer window (the | |
2294 | active one) to count. */ | |
2295 | ||
2296 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
2297 | if (NILP (*all_frames)) | |
f00af5b1 | 2298 | *all_frames |
3a45383a | 2299 | = (!EQ (*minibuf, Qlambda) |
b9e9df47 | 2300 | ? FRAME_MINIBUF_WINDOW (XFRAME (w->frame)) |
3a45383a | 2301 | : Qnil); |
67492200 GM |
2302 | else if (EQ (*all_frames, Qvisible)) |
2303 | ; | |
0f8fe9a2 | 2304 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
2305 | ; |
2306 | else if (FRAMEP (*all_frames)) | |
2307 | ; | |
2308 | else if (!EQ (*all_frames, Qt)) | |
2309 | *all_frames = Qnil; | |
67492200 GM |
2310 | } |
2311 | ||
2312 | ||
ab6d1131 | 2313 | /* Return the next or previous window of WINDOW in cyclic ordering |
67492200 GM |
2314 | of windows. NEXT_P non-zero means return the next window. See the |
2315 | documentation string of next-window for the meaning of MINIBUF and | |
2316 | ALL_FRAMES. */ | |
2317 | ||
2318 | static Lisp_Object | |
971de7fb | 2319 | next_window (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames, int next_p) |
67492200 GM |
2320 | { |
2321 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 2322 | |
67492200 GM |
2323 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
2324 | return the first window on the frame. */ | |
2325 | if (FRAMEP (all_frames) | |
d3d50620 | 2326 | && !EQ (all_frames, XWINDOW (window)->frame)) |
67492200 | 2327 | return Fframe_first_window (all_frames); |
177c0ea7 | 2328 | |
212116d6 | 2329 | if (next_p) |
67492200 GM |
2330 | { |
2331 | Lisp_Object list; | |
177c0ea7 | 2332 | |
67492200 GM |
2333 | /* Find WINDOW in the list of all windows. */ |
2334 | list = Fmemq (window, window_list ()); | |
2335 | ||
2336 | /* Scan forward from WINDOW to the end of the window list. */ | |
2337 | if (CONSP (list)) | |
2338 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 2339 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2340 | break; |
2341 | ||
2342 | /* Scan from the start of the window list up to WINDOW. */ | |
2343 | if (!CONSP (list)) | |
2344 | for (list = Vwindow_list; | |
2345 | CONSP (list) && !EQ (XCAR (list), window); | |
2346 | list = XCDR (list)) | |
118ea242 | 2347 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2348 | break; |
2349 | ||
2350 | if (CONSP (list)) | |
2351 | window = XCAR (list); | |
2352 | } | |
2353 | else | |
2354 | { | |
2355 | Lisp_Object candidate, list; | |
177c0ea7 | 2356 | |
67492200 GM |
2357 | /* Scan through the list of windows for candidates. If there are |
2358 | candidate windows in front of WINDOW, the last one of these | |
2359 | is the one we want. If there are candidates following WINDOW | |
2360 | in the list, again the last one of these is the one we want. */ | |
2361 | candidate = Qnil; | |
2362 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
2363 | { | |
2364 | if (EQ (XCAR (list), window)) | |
2365 | { | |
2366 | if (WINDOWP (candidate)) | |
2367 | break; | |
2368 | } | |
118ea242 GM |
2369 | else if (candidate_window_p (XCAR (list), window, minibuf, |
2370 | all_frames)) | |
67492200 GM |
2371 | candidate = XCAR (list); |
2372 | } | |
2373 | ||
2374 | if (WINDOWP (candidate)) | |
2375 | window = candidate; | |
2376 | } | |
2377 | ||
2378 | return window; | |
2379 | } | |
7ab12479 | 2380 | |
7ab12479 | 2381 | |
a7ca3326 | 2382 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
a9b9b7f5 | 2383 | doc: /* Return live window after WINDOW in the cyclic ordering of windows. |
87e68db4 | 2384 | WINDOW must be a live window and defaults to the selected one. The |
9397e56f MR |
2385 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to |
2386 | consider. | |
2387 | ||
2388 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2389 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2390 | even if the minibuffer is not active. Any other value means do not | |
2391 | consider the minibuffer window even if the minibuffer is active. | |
2392 | ||
2393 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2394 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2395 | minibuffer counts, consider all windows on all frames that share that | |
2396 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2397 | meanings: | |
2398 | ||
2399 | - t means consider all windows on all existing frames. | |
2400 | ||
2401 | - `visible' means consider all windows on all visible frames. | |
2402 | ||
2403 | - 0 (the number zero) means consider all windows on all visible and | |
2404 | iconified frames. | |
2405 | ||
2406 | - A frame means consider all windows on that frame only. | |
ab6d1131 | 2407 | |
ab6d1131 | 2408 | Anything else means consider all windows on WINDOW's frame and no |
9397e56f | 2409 | others. |
fdb82f93 PJ |
2410 | |
2411 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
2412 | `next-window' to iterate through the entire cycle of acceptable | |
2413 | windows, eventually ending up back at the window you started with. | |
2414 | `previous-window' traverses the same cycle, in the reverse order. */) | |
5842a27b | 2415 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2416 | { |
67492200 | 2417 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
2418 | } |
2419 | ||
67492200 | 2420 | |
26f6279d | 2421 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
a9b9b7f5 | 2422 | doc: /* Return live window before WINDOW in the cyclic ordering of windows. |
9397e56f MR |
2423 | WINDOW must be a live window and defaults to the selected one. The |
2424 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to | |
2425 | consider. | |
2426 | ||
2427 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2428 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2429 | even if the minibuffer is not active. Any other value means do not | |
2430 | consider the minibuffer window even if the minibuffer is active. | |
2431 | ||
2432 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2433 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2434 | minibuffer counts, consider all windows on all frames that share that | |
2435 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2436 | meanings: | |
2437 | ||
2438 | - t means consider all windows on all existing frames. | |
2439 | ||
2440 | - `visible' means consider all windows on all visible frames. | |
2441 | ||
2442 | - 0 (the number zero) means consider all windows on all visible and | |
2443 | iconified frames. | |
2444 | ||
2445 | - A frame means consider all windows on that frame only. | |
2446 | ||
2447 | Anything else means consider all windows on WINDOW's frame and no | |
2448 | others. | |
ab6d1131 MR |
2449 | |
2450 | If you use consistent values for MINIBUF and ALL-FRAMES, you can | |
2451 | use `previous-window' to iterate through the entire cycle of | |
2452 | acceptable windows, eventually ending up back at the window you | |
2453 | started with. `next-window' traverses the same cycle, in the | |
2454 | reverse order. */) | |
5842a27b | 2455 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2456 | { |
67492200 | 2457 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2458 | } |
2459 | ||
67492200 | 2460 | |
ab6d1131 | 2461 | /* Return a list of windows in cyclic ordering. Arguments are like |
cd2904bd GM |
2462 | for `next-window'. */ |
2463 | ||
2464 | static Lisp_Object | |
971de7fb | 2465 | window_list_1 (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 | 2466 | { |
403de3b4 | 2467 | Lisp_Object tail, list, rest; |
67492200 GM |
2468 | |
2469 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2470 | list = Qnil; | |
177c0ea7 | 2471 | |
67492200 | 2472 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2473 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2474 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2475 | |
403de3b4 RS |
2476 | /* Rotate the list to start with WINDOW. */ |
2477 | list = Fnreverse (list); | |
2478 | rest = Fmemq (window, list); | |
2479 | if (!NILP (rest) && !EQ (rest, list)) | |
2480 | { | |
1725a7c9 | 2481 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2482 | ; |
2483 | XSETCDR (tail, Qnil); | |
2484 | list = nconc2 (rest, list); | |
2485 | } | |
2486 | return list; | |
67492200 GM |
2487 | } |
2488 | ||
2489 | ||
abde8f8c MR |
2490 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, |
2491 | doc: /* Return a list of windows on FRAME, starting with WINDOW. | |
2492 | FRAME nil or omitted means use the selected frame. | |
49745b39 | 2493 | WINDOW nil or omitted means use the window selected within FRAME. |
abde8f8c MR |
2494 | MINIBUF t means include the minibuffer window, even if it isn't active. |
2495 | MINIBUF nil or omitted means include the minibuffer window only | |
2496 | if it's active. | |
2497 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2498 | (Lisp_Object frame, Lisp_Object minibuf, Lisp_Object window) | |
2499 | { | |
2500 | if (NILP (window)) | |
e69b0960 | 2501 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
abde8f8c MR |
2502 | CHECK_WINDOW (window); |
2503 | if (NILP (frame)) | |
2504 | frame = selected_frame; | |
2505 | ||
d3d50620 | 2506 | if (!EQ (frame, XWINDOW (window)->frame)) |
abde8f8c MR |
2507 | error ("Window is on a different frame"); |
2508 | ||
2509 | return window_list_1 (window, minibuf, frame); | |
2510 | } | |
2511 | ||
2512 | ||
1a13852e MR |
2513 | DEFUN ("window-list-1", Fwindow_list_1, Swindow_list_1, 0, 3, 0, |
2514 | doc: /* Return a list of all live windows. | |
2515 | WINDOW specifies the first window to list and defaults to the selected | |
2516 | window. | |
2517 | ||
2518 | Optional argument MINIBUF nil or omitted means consider the minibuffer | |
2519 | window only if the minibuffer is active. MINIBUF t means consider the | |
2520 | minibuffer window even if the minibuffer is not active. Any other value | |
2521 | means do not consider the minibuffer window even if the minibuffer is | |
2522 | active. | |
2523 | ||
2524 | Optional argument ALL-FRAMES nil or omitted means consider all windows | |
2525 | on WINDOW's frame, plus the minibuffer window if specified by the | |
2526 | MINIBUF argument. If the minibuffer counts, consider all windows on all | |
2527 | frames that share that minibuffer too. The following non-nil values of | |
2528 | ALL-FRAMES have special meanings: | |
2529 | ||
2530 | - t means consider all windows on all existing frames. | |
2531 | ||
2532 | - `visible' means consider all windows on all visible frames. | |
2533 | ||
2534 | - 0 (the number zero) means consider all windows on all visible and | |
2535 | iconified frames. | |
2536 | ||
2537 | - A frame means consider all windows on that frame only. | |
2538 | ||
2539 | Anything else means consider all windows on WINDOW's frame and no | |
2540 | others. | |
2541 | ||
2542 | If WINDOW is not on the list of windows returned, some other window will | |
8350f087 | 2543 | be listed first but no error is signaled. */) |
1a13852e MR |
2544 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
2545 | { | |
2546 | return window_list_1 (window, minibuf, all_frames); | |
2547 | } | |
7ab12479 JB |
2548 | \f |
2549 | /* Look at all windows, performing an operation specified by TYPE | |
2550 | with argument OBJ. | |
75d8f668 | 2551 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2552 | Qnil, look at just the selected frame; |
89bca612 | 2553 | Qvisible, look at visible frames; |
75d8f668 | 2554 | a frame, just look at windows on that frame. |
85fe3b5e | 2555 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2556 | |
2557 | enum window_loop | |
2558 | { | |
2559 | WINDOW_LOOP_UNUSED, | |
9397e56f MR |
2560 | GET_BUFFER_WINDOW, /* Arg is buffer */ |
2561 | REPLACE_BUFFER_IN_WINDOWS_SAFELY, /* Arg is buffer */ | |
2562 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ | |
3f8ab7bd | 2563 | CHECK_ALL_WINDOWS |
7ab12479 JB |
2564 | }; |
2565 | ||
2566 | static Lisp_Object | |
971de7fb | 2567 | window_loop (enum window_loop type, Lisp_Object obj, int mini, Lisp_Object frames) |
7ab12479 | 2568 | { |
118ea242 | 2569 | Lisp_Object window, windows, best_window, frame_arg; |
9397e56f | 2570 | int frame_best_window_flag = 0; |
118ea242 | 2571 | struct frame *f; |
ffdc852d | 2572 | struct gcpro gcpro1; |
177c0ea7 | 2573 | |
44fa5b1e JB |
2574 | /* If we're only looping through windows on a particular frame, |
2575 | frame points to that frame. If we're looping through windows | |
2576 | on all frames, frame is 0. */ | |
2577 | if (FRAMEP (frames)) | |
118ea242 | 2578 | f = XFRAME (frames); |
44fa5b1e | 2579 | else if (NILP (frames)) |
118ea242 | 2580 | f = SELECTED_FRAME (); |
7ab12479 | 2581 | else |
118ea242 | 2582 | f = NULL; |
177c0ea7 | 2583 | |
118ea242 | 2584 | if (f) |
89bca612 | 2585 | frame_arg = Qlambda; |
0f8fe9a2 | 2586 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2587 | frame_arg = frames; |
89bca612 RS |
2588 | else if (EQ (frames, Qvisible)) |
2589 | frame_arg = frames; | |
118ea242 GM |
2590 | else |
2591 | frame_arg = Qt; | |
7ab12479 | 2592 | |
89bca612 RS |
2593 | /* frame_arg is Qlambda to stick to one frame, |
2594 | Qvisible to consider all visible frames, | |
2595 | or Qt otherwise. */ | |
2596 | ||
7ab12479 | 2597 | /* Pick a window to start with. */ |
017b2bad | 2598 | if (WINDOWP (obj)) |
118ea242 GM |
2599 | window = obj; |
2600 | else if (f) | |
2601 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2602 | else |
118ea242 | 2603 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2604 | |
cd2904bd | 2605 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2606 | GCPRO1 (windows); |
7ab12479 | 2607 | best_window = Qnil; |
118ea242 | 2608 | |
e67a1dea | 2609 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2610 | { |
118ea242 | 2611 | struct window *w; |
177c0ea7 | 2612 | |
118ea242 GM |
2613 | window = XCAR (windows); |
2614 | w = XWINDOW (window); | |
177c0ea7 | 2615 | |
118ea242 GM |
2616 | /* Note that we do not pay attention here to whether the frame |
2617 | is visible, since Fwindow_list skips non-visible frames if | |
2618 | that is desired, under the control of frame_arg. */ | |
2619 | if (!MINI_WINDOW_P (w) | |
9397e56f MR |
2620 | /* For REPLACE_BUFFER_IN_WINDOWS_SAFELY, we must always |
2621 | consider all windows. */ | |
2622 | || type == REPLACE_BUFFER_IN_WINDOWS_SAFELY | |
7ab12479 JB |
2623 | || (mini && minibuf_level > 0)) |
2624 | switch (type) | |
2625 | { | |
2626 | case GET_BUFFER_WINDOW: | |
d3d50620 | 2627 | if (EQ (w->buffer, obj) |
9397e56f MR |
2628 | /* Don't find any minibuffer window except the one that |
2629 | is currently in use. */ | |
2630 | && (MINI_WINDOW_P (w) ? EQ (window, minibuf_window) : 1)) | |
118ea242 | 2631 | { |
9397e56f MR |
2632 | if (EQ (window, selected_window)) |
2633 | /* Preferably return the selected window. */ | |
ca2d5566 | 2634 | RETURN_UNGCPRO (window); |
d3d50620 | 2635 | else if (EQ (XWINDOW (window)->frame, selected_frame) |
9397e56f MR |
2636 | && !frame_best_window_flag) |
2637 | /* Prefer windows on the current frame (but don't | |
2638 | choose another one if we have one already). */ | |
118ea242 | 2639 | { |
9397e56f MR |
2640 | best_window = window; |
2641 | frame_best_window_flag = 1; | |
7ab12479 | 2642 | } |
9397e56f MR |
2643 | else if (NILP (best_window)) |
2644 | best_window = window; | |
7ab12479 JB |
2645 | } |
2646 | break; | |
2647 | ||
9397e56f MR |
2648 | case REPLACE_BUFFER_IN_WINDOWS_SAFELY: |
2649 | /* We could simply check whether the buffer shown by window | |
2650 | is live, and show another buffer in case it isn't. */ | |
d3d50620 | 2651 | if (EQ (w->buffer, obj)) |
7ab12479 | 2652 | { |
9397e56f | 2653 | /* Undedicate WINDOW. */ |
e8c17b81 | 2654 | wset_dedicated (w, Qnil); |
9397e56f MR |
2655 | /* Make WINDOW show the buffer returned by |
2656 | other_buffer_safely, don't run any hooks. */ | |
2657 | set_window_buffer | |
d3d50620 | 2658 | (window, other_buffer_safely (w->buffer), 0, 0); |
9397e56f MR |
2659 | /* If WINDOW is the selected window, make its buffer |
2660 | current. But do so only if the window shows the | |
2661 | current buffer (Bug#6454). */ | |
2662 | if (EQ (window, selected_window) | |
d3d50620 DA |
2663 | && XBUFFER (w->buffer) == current_buffer) |
2664 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2665 | } |
2666 | break; | |
3f8ab7bd | 2667 | |
6b61353c | 2668 | case REDISPLAY_BUFFER_WINDOWS: |
d3d50620 | 2669 | if (EQ (w->buffer, obj)) |
6b61353c KH |
2670 | { |
2671 | mark_window_display_accurate (window, 0); | |
c98ff5dd | 2672 | w->update_mode_line = 1; |
6b61353c KH |
2673 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; |
2674 | ++update_mode_lines; | |
2675 | best_window = window; | |
2676 | } | |
2677 | break; | |
2678 | ||
3f8ab7bd RS |
2679 | /* Check for a window that has a killed buffer. */ |
2680 | case CHECK_ALL_WINDOWS: | |
d3d50620 | 2681 | if (! NILP (w->buffer) |
e578f381 | 2682 | && !BUFFER_LIVE_P (XBUFFER (w->buffer))) |
1088b922 | 2683 | emacs_abort (); |
118ea242 | 2684 | break; |
6bbd7a29 GM |
2685 | |
2686 | case WINDOW_LOOP_UNUSED: | |
2687 | break; | |
7ab12479 | 2688 | } |
7ab12479 | 2689 | } |
7ab12479 | 2690 | |
118ea242 | 2691 | UNGCPRO; |
7ab12479 | 2692 | return best_window; |
37962e60 | 2693 | } |
605be8af | 2694 | |
3f8ab7bd RS |
2695 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2696 | ||
e3b27b31 | 2697 | extern void check_all_windows (void) EXTERNALLY_VISIBLE; |
233a4a2c | 2698 | void |
971de7fb | 2699 | check_all_windows (void) |
3f8ab7bd RS |
2700 | { |
2701 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2702 | } | |
2703 | ||
a7ca3326 | 2704 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 0, 2, 0, |
fec89261 | 2705 | doc: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none. |
496e208e MR |
2706 | BUFFER-OR-NAME may be a buffer or a buffer name and defaults to |
2707 | the current buffer. | |
2708 | ||
2709 | The optional argument ALL-FRAMES specifies the frames to consider: | |
2710 | ||
2711 | - t means consider all windows on all existing frames. | |
2712 | ||
2713 | - `visible' means consider all windows on all visible frames. | |
2714 | ||
2715 | - 0 (the number zero) means consider all windows on all visible | |
2716 | and iconified frames. | |
2717 | ||
2718 | - A frame means consider all windows on that frame only. | |
2719 | ||
2720 | Any other value of ALL-FRAMES means consider all windows on the | |
2721 | selected frame and no others. */) | |
2722 | (Lisp_Object buffer_or_name, Lisp_Object all_frames) | |
7ab12479 | 2723 | { |
fec89261 MR |
2724 | Lisp_Object buffer; |
2725 | ||
2726 | if (NILP (buffer_or_name)) | |
2727 | buffer = Fcurrent_buffer (); | |
2728 | else | |
2729 | buffer = Fget_buffer (buffer_or_name); | |
2730 | ||
017b2bad | 2731 | if (BUFFERP (buffer)) |
496e208e | 2732 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, all_frames); |
7ab12479 JB |
2733 | else |
2734 | return Qnil; | |
2735 | } | |
2736 | ||
4b66faf3 | 2737 | static Lisp_Object |
1a13852e MR |
2738 | resize_root_window (Lisp_Object window, Lisp_Object delta, Lisp_Object horizontal, Lisp_Object ignore) |
2739 | { | |
5386012d | 2740 | return call4 (Qwindow_resize_root_window, window, delta, horizontal, ignore); |
1a13852e MR |
2741 | } |
2742 | ||
2743 | ||
2744 | DEFUN ("delete-other-windows-internal", Fdelete_other_windows_internal, | |
2745 | Sdelete_other_windows_internal, 0, 2, "", | |
2746 | doc: /* Make WINDOW fill its frame. | |
52162052 MR |
2747 | Only the frame WINDOW is on is affected. WINDOW must be a valid window |
2748 | and defaults to the selected one. | |
1a13852e | 2749 | |
be7f5545 MR |
2750 | Optional argument ROOT, if non-nil, must specify an internal window such |
2751 | that WINDOW is in its window subtree. If this is the case, replace ROOT | |
2752 | by WINDOW and leave alone any windows not part of ROOT's subtree. | |
1a13852e MR |
2753 | |
2754 | When WINDOW is live try to reduce display jumps by keeping the text | |
2755 | previously visible in WINDOW in the same place on the frame. Doing this | |
2756 | depends on the value of (window-start WINDOW), so if calling this | |
2757 | function in a program gives strange scrolling, make sure the | |
2758 | window-start value is reasonable when this function is called. */) | |
2759 | (Lisp_Object window, Lisp_Object root) | |
2760 | { | |
2761 | struct window *w, *r, *s; | |
2762 | struct frame *f; | |
46a4ce9e | 2763 | Lisp_Object sibling, pwindow, swindow IF_LINT (= Qnil), delta; |
d311d28c | 2764 | ptrdiff_t startpos IF_LINT (= 0); |
46a4ce9e | 2765 | int top IF_LINT (= 0), new_top, resize_failed; |
1a13852e | 2766 | |
52162052 | 2767 | w = decode_valid_window (window); |
1a13852e | 2768 | XSETWINDOW (window, w); |
d3d50620 | 2769 | f = XFRAME (w->frame); |
1a13852e MR |
2770 | |
2771 | if (NILP (root)) | |
2772 | /* ROOT is the frame's root window. */ | |
2773 | { | |
2774 | root = FRAME_ROOT_WINDOW (f); | |
2775 | r = XWINDOW (root); | |
2776 | } | |
2777 | else | |
2778 | /* ROOT must be an ancestor of WINDOW. */ | |
2779 | { | |
52162052 | 2780 | r = decode_valid_window (root); |
d3d50620 | 2781 | pwindow = XWINDOW (window)->parent; |
1a13852e MR |
2782 | while (!NILP (pwindow)) |
2783 | if (EQ (pwindow, root)) | |
2784 | break; | |
2785 | else | |
d3d50620 | 2786 | pwindow = XWINDOW (pwindow)->parent; |
1a13852e MR |
2787 | if (!EQ (pwindow, root)) |
2788 | error ("Specified root is not an ancestor of specified window"); | |
2789 | } | |
2790 | ||
2791 | if (EQ (window, root)) | |
2792 | /* A noop. */ | |
2793 | return Qnil; | |
2794 | /* I don't understand the "top > 0" part below. If we deal with a | |
2795 | standalone minibuffer it would have been caught by the preceding | |
2796 | test. */ | |
2797 | else if (MINI_WINDOW_P (w)) /* && top > 0) */ | |
2798 | error ("Can't expand minibuffer to full frame"); | |
2799 | ||
d3d50620 | 2800 | if (!NILP (w->buffer)) |
1a13852e | 2801 | { |
d3d50620 | 2802 | startpos = marker_position (w->start); |
1a13852e MR |
2803 | top = WINDOW_TOP_EDGE_LINE (w) |
2804 | - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2805 | /* Make sure WINDOW is the frame's selected window. */ | |
2806 | if (!EQ (window, FRAME_SELECTED_WINDOW (f))) | |
2807 | { | |
d3d50620 | 2808 | if (EQ (selected_frame, w->frame)) |
1a13852e MR |
2809 | Fselect_window (window, Qnil); |
2810 | else | |
f00af5b1 | 2811 | fset_selected_window (f, window); |
1a13852e MR |
2812 | } |
2813 | } | |
2814 | else | |
2815 | { | |
be7f5545 MR |
2816 | /* See if the frame's selected window is a part of the window |
2817 | subtree rooted at WINDOW, by finding all the selected window's | |
2818 | parents and comparing each one with WINDOW. If it isn't we | |
2819 | need a new selected window for this frame. */ | |
1a13852e MR |
2820 | swindow = FRAME_SELECTED_WINDOW (f); |
2821 | while (1) | |
2822 | { | |
2823 | pwindow = swindow; | |
2824 | while (!NILP (pwindow) && !EQ (window, pwindow)) | |
d3d50620 | 2825 | pwindow = XWINDOW (pwindow)->parent; |
1a13852e MR |
2826 | |
2827 | if (EQ (window, pwindow)) | |
2828 | /* If WINDOW is an ancestor of SWINDOW, then SWINDOW is ok | |
2829 | as the new selected window. */ | |
2830 | break; | |
2831 | else | |
2832 | /* Else try the previous window of SWINDOW. */ | |
2833 | swindow = Fprevious_window (swindow, Qlambda, Qnil); | |
2834 | } | |
2835 | ||
2836 | if (!EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
2837 | { | |
d3d50620 | 2838 | if (EQ (selected_frame, w->frame)) |
1a13852e MR |
2839 | Fselect_window (swindow, Qnil); |
2840 | else | |
f00af5b1 | 2841 | fset_selected_window (f, swindow); |
1a13852e MR |
2842 | } |
2843 | } | |
2844 | ||
4d7e6e51 | 2845 | block_input (); |
4c5501e9 EZ |
2846 | if (!FRAME_INITIAL_P (f)) |
2847 | { | |
2848 | Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f); | |
2849 | ||
2850 | /* We are going to free the glyph matrices of WINDOW, and with | |
2851 | that we might lose any information about glyph rows that have | |
2852 | some of their glyphs highlighted in mouse face. (These rows | |
2853 | are marked with a non-zero mouse_face_p flag.) If WINDOW | |
2854 | indeed has some glyphs highlighted in mouse face, signal to | |
2855 | frame's up-to-date hook that mouse highlight was overwritten, | |
2856 | so that it will arrange for redisplaying the highlight. */ | |
2857 | if (EQ (hlinfo->mouse_face_window, window)) | |
2858 | { | |
2859 | hlinfo->mouse_face_beg_row = hlinfo->mouse_face_beg_col = -1; | |
2860 | hlinfo->mouse_face_end_row = hlinfo->mouse_face_end_col = -1; | |
2861 | hlinfo->mouse_face_window = Qnil; | |
2862 | } | |
a6b1c7cc | 2863 | } |
1a13852e MR |
2864 | free_window_matrices (r); |
2865 | ||
2866 | windows_or_buffers_changed++; | |
2867 | Vwindow_list = Qnil; | |
2868 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
46a4ce9e | 2869 | resize_failed = 0; |
1a13852e | 2870 | |
d3d50620 | 2871 | if (NILP (w->buffer)) |
1a13852e | 2872 | { |
be7f5545 | 2873 | /* Resize child windows vertically. */ |
d3d50620 DA |
2874 | XSETINT (delta, XINT (r->total_lines) |
2875 | - XINT (w->total_lines)); | |
e8c17b81 | 2876 | wset_top_line (w, r->top_line); |
1a13852e | 2877 | resize_root_window (window, delta, Qnil, Qnil); |
d615d6d2 MR |
2878 | if (window_resize_check (w, 0)) |
2879 | window_resize_apply (w, 0); | |
1a13852e MR |
2880 | else |
2881 | { | |
2882 | resize_root_window (window, delta, Qnil, Qt); | |
d615d6d2 MR |
2883 | if (window_resize_check (w, 0)) |
2884 | window_resize_apply (w, 0); | |
1a13852e MR |
2885 | else |
2886 | resize_failed = 1; | |
2887 | } | |
2888 | ||
be7f5545 | 2889 | /* Resize child windows horizontally. */ |
1a13852e MR |
2890 | if (!resize_failed) |
2891 | { | |
e8c17b81 | 2892 | wset_left_col (w, r->left_col); |
f00af5b1 PE |
2893 | XSETINT (delta, |
2894 | XINT (r->total_cols) - XINT (w->total_cols)); | |
e8c17b81 | 2895 | wset_left_col (w, r->left_col); |
1a13852e | 2896 | resize_root_window (window, delta, Qt, Qnil); |
d615d6d2 MR |
2897 | if (window_resize_check (w, 1)) |
2898 | window_resize_apply (w, 1); | |
1a13852e MR |
2899 | else |
2900 | { | |
2901 | resize_root_window (window, delta, Qt, Qt); | |
d615d6d2 MR |
2902 | if (window_resize_check (w, 1)) |
2903 | window_resize_apply (w, 1); | |
1a13852e MR |
2904 | else |
2905 | resize_failed = 1; | |
2906 | } | |
2907 | } | |
2908 | ||
2909 | if (resize_failed) | |
2910 | /* Play safe, if we still can ... */ | |
2911 | { | |
2912 | window = swindow; | |
2913 | w = XWINDOW (window); | |
2914 | } | |
2915 | } | |
2916 | ||
2917 | /* Cleanly unlink WINDOW from window-tree. */ | |
d3d50620 | 2918 | if (!NILP (w->prev)) |
1a13852e MR |
2919 | /* Get SIBLING above (on the left of) WINDOW. */ |
2920 | { | |
d3d50620 | 2921 | sibling = w->prev; |
1a13852e | 2922 | s = XWINDOW (sibling); |
e8c17b81 | 2923 | wset_next (s, w->next); |
d3d50620 | 2924 | if (!NILP (s->next)) |
e8c17b81 | 2925 | wset_prev (XWINDOW (s->next), sibling); |
1a13852e MR |
2926 | } |
2927 | else | |
2928 | /* Get SIBLING below (on the right of) WINDOW. */ | |
2929 | { | |
d3d50620 | 2930 | sibling = w->next; |
1a13852e | 2931 | s = XWINDOW (sibling); |
e8c17b81 | 2932 | wset_prev (s, Qnil); |
d3d50620 | 2933 | if (!NILP (XWINDOW (w->parent)->vchild)) |
e8c17b81 | 2934 | wset_vchild (XWINDOW (w->parent), sibling); |
1a13852e | 2935 | else |
e8c17b81 | 2936 | wset_hchild (XWINDOW (w->parent), sibling); |
1a13852e MR |
2937 | } |
2938 | ||
be7f5545 | 2939 | /* Delete ROOT and all child windows of ROOT. */ |
d3d50620 | 2940 | if (!NILP (r->vchild)) |
1a13852e | 2941 | { |
d3d50620 | 2942 | delete_all_child_windows (r->vchild); |
e8c17b81 | 2943 | wset_vchild (r, Qnil); |
1a13852e | 2944 | } |
d3d50620 | 2945 | else if (!NILP (r->hchild)) |
1a13852e | 2946 | { |
d3d50620 | 2947 | delete_all_child_windows (r->hchild); |
e8c17b81 | 2948 | wset_hchild (r, Qnil); |
1a13852e MR |
2949 | } |
2950 | ||
2951 | replace_window (root, window, 1); | |
2952 | ||
1a13852e | 2953 | /* This must become SWINDOW anyway ....... */ |
d3d50620 | 2954 | if (!NILP (w->buffer) && !resize_failed) |
1a13852e MR |
2955 | { |
2956 | /* Try to minimize scrolling, by setting the window start to the | |
2957 | point will cause the text at the old window start to be at the | |
2958 | same place on the frame. But don't try to do this if the | |
2959 | window start is outside the visible portion (as might happen | |
2960 | when the display is not current, due to typeahead). */ | |
2961 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2962 | if (new_top != top | |
d3d50620 DA |
2963 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) |
2964 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) | |
1a13852e MR |
2965 | { |
2966 | struct position pos; | |
2967 | struct buffer *obuf = current_buffer; | |
2968 | ||
d3d50620 | 2969 | Fset_buffer (w->buffer); |
1a13852e MR |
2970 | /* This computation used to temporarily move point, but that |
2971 | can have unwanted side effects due to text properties. */ | |
2972 | pos = *vmotion (startpos, -top, w); | |
2973 | ||
d3d50620 | 2974 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
e8c17b81 | 2975 | wset_window_end_valid (w, Qnil); |
c98ff5dd DA |
2976 | w->start_at_line_beg = (pos.bytepos == BEGV_BYTE |
2977 | || FETCH_BYTE (pos.bytepos - 1) == '\n'); | |
1a13852e MR |
2978 | /* We need to do this, so that the window-scroll-functions |
2979 | get called. */ | |
c98ff5dd | 2980 | w->optional_new_start = 1; |
1a13852e MR |
2981 | |
2982 | set_buffer_internal (obuf); | |
2983 | } | |
2984 | } | |
2985 | ||
2986 | adjust_glyphs (f); | |
4d7e6e51 | 2987 | unblock_input (); |
1a13852e MR |
2988 | |
2989 | run_window_configuration_change_hook (f); | |
2990 | ||
2991 | return Qnil; | |
2992 | } | |
2993 | ||
2994 | ||
9397e56f MR |
2995 | void |
2996 | replace_buffer_in_windows (Lisp_Object buffer) | |
7ab12479 | 2997 | { |
9397e56f | 2998 | call1 (Qreplace_buffer_in_windows, buffer); |
7ab12479 JB |
2999 | } |
3000 | ||
c6afe371 DA |
3001 | /* If BUFFER is shown in a window, safely replace it with some other |
3002 | buffer in all windows of all frames, even those on other keyboards. */ | |
ff58478b RS |
3003 | |
3004 | void | |
9397e56f | 3005 | replace_buffer_in_windows_safely (Lisp_Object buffer) |
ff58478b | 3006 | { |
c6afe371 DA |
3007 | if (buffer_window_count (XBUFFER (buffer))) |
3008 | { | |
3009 | Lisp_Object tail, frame; | |
ff58478b | 3010 | |
c6afe371 DA |
3011 | /* A single call to window_loop won't do the job because it only |
3012 | considers frames on the current keyboard. So loop manually over | |
3013 | frames, and handle each one. */ | |
3014 | FOR_EACH_FRAME (tail, frame) | |
3015 | window_loop (REPLACE_BUFFER_IN_WINDOWS_SAFELY, buffer, 1, frame); | |
3016 | } | |
ff58478b | 3017 | } |
c6afe371 | 3018 | |
a481b3ea JB |
3019 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the |
3020 | minimum allowable size. */ | |
5500c422 | 3021 | |
605be8af | 3022 | void |
971de7fb | 3023 | check_frame_size (FRAME_PTR frame, int *rows, int *cols) |
a481b3ea | 3024 | { |
628df3bf | 3025 | /* For height, we have to see: |
54b8bcb5 RS |
3026 | how many windows the frame has at minimum (one or two), |
3027 | and whether it has a menu bar or other special stuff at the top. */ | |
3028 | int min_height | |
3029 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
3030 | ? MIN_SAFE_WINDOW_HEIGHT | |
3031 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 3032 | |
5500c422 GM |
3033 | if (FRAME_TOP_MARGIN (frame) > 0) |
3034 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
3035 | |
3036 | if (*rows < min_height) | |
3037 | *rows = min_height; | |
3038 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
3039 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
3040 | } | |
3041 | ||
79fd290e | 3042 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
3043 | Return 1 if window width is ok after adjustment; 0 if window |
3044 | is still too narrow. */ | |
3045 | ||
3046 | static int | |
971de7fb | 3047 | adjust_window_margins (struct window *w) |
949cf20f KS |
3048 | { |
3049 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
3050 | - WINDOW_FRINGE_COLS (w) | |
3051 | - WINDOW_SCROLL_BAR_COLS (w)); | |
3052 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
3053 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
3054 | ||
3055 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
3056 | return 1; | |
3057 | ||
3058 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
3059 | return 0; | |
3060 | ||
3061 | /* Window's text area is too narrow, but reducing the window | |
3062 | margins will fix that. */ | |
3063 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
3064 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
3065 | { | |
3066 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
077288cf | 3067 | { |
e8c17b81 PE |
3068 | wset_left_margin_cols (w, make_number (margin_cols / 2)); |
3069 | wset_right_margin_cols (w, make_number (margin_cols / 2)); | |
077288cf | 3070 | } |
949cf20f | 3071 | else |
e8c17b81 | 3072 | wset_right_margin_cols (w, make_number (margin_cols)); |
949cf20f KS |
3073 | } |
3074 | else | |
e8c17b81 | 3075 | wset_left_margin_cols (w, make_number (margin_cols)); |
949cf20f KS |
3076 | return 1; |
3077 | } | |
562dd5e9 | 3078 | \f |
9397e56f MR |
3079 | /* The following three routines are needed for running a window's |
3080 | configuration change hook. */ | |
562dd5e9 MR |
3081 | static void |
3082 | run_funs (Lisp_Object funs) | |
3083 | { | |
3084 | for (; CONSP (funs); funs = XCDR (funs)) | |
3085 | if (!EQ (XCAR (funs), Qt)) | |
3086 | call0 (XCAR (funs)); | |
3087 | } | |
6b61353c | 3088 | |
9397e56f MR |
3089 | static Lisp_Object |
3090 | select_window_norecord (Lisp_Object window) | |
3091 | { | |
3092 | return WINDOW_LIVE_P (window) | |
3093 | ? Fselect_window (window, Qt) : selected_window; | |
3094 | } | |
3095 | ||
3096 | static Lisp_Object | |
3097 | select_frame_norecord (Lisp_Object frame) | |
3098 | { | |
3099 | return FRAME_LIVE_P (XFRAME (frame)) | |
3100 | ? Fselect_frame (frame, Qt) : selected_frame; | |
3101 | } | |
6b61353c | 3102 | |
562dd5e9 MR |
3103 | void |
3104 | run_window_configuration_change_hook (struct frame *f) | |
3105 | { | |
d311d28c | 3106 | ptrdiff_t count = SPECPDL_INDEX (); |
562dd5e9 MR |
3107 | Lisp_Object frame, global_wcch |
3108 | = Fdefault_value (Qwindow_configuration_change_hook); | |
3109 | XSETFRAME (frame, f); | |
6b61353c | 3110 | |
d1f55f16 | 3111 | if (NILP (Vrun_hooks) || !NILP (inhibit_lisp_code)) |
562dd5e9 | 3112 | return; |
6b61353c | 3113 | |
562dd5e9 MR |
3114 | /* Use the right buffer. Matters when running the local hooks. */ |
3115 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
6b61353c | 3116 | { |
66322887 | 3117 | record_unwind_current_buffer (); |
562dd5e9 MR |
3118 | Fset_buffer (Fwindow_buffer (Qnil)); |
3119 | } | |
6a44ffb3 | 3120 | |
1a13852e MR |
3121 | if (SELECTED_FRAME () != f) |
3122 | { | |
3123 | record_unwind_protect (select_frame_norecord, Fselected_frame ()); | |
3124 | select_frame_norecord (frame); | |
3125 | } | |
3126 | ||
6a44ffb3 SM |
3127 | /* Look for buffer-local values. */ |
3128 | { | |
3129 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
3130 | for (; CONSP (windows); windows = XCDR (windows)) | |
3131 | { | |
3132 | Lisp_Object window = XCAR (windows); | |
3133 | Lisp_Object buffer = Fwindow_buffer (window); | |
3134 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
3135 | buffer))) | |
3136 | { | |
d311d28c | 3137 | ptrdiff_t inner_count = SPECPDL_INDEX (); |
6a44ffb3 SM |
3138 | record_unwind_protect (select_window_norecord, Fselected_window ()); |
3139 | select_window_norecord (window); | |
3140 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
3141 | buffer)); | |
46a4ce9e | 3142 | unbind_to (inner_count, Qnil); |
fec89261 | 3143 | } |
6a44ffb3 SM |
3144 | } |
3145 | } | |
047aaeb9 | 3146 | |
6a44ffb3 SM |
3147 | run_funs (global_wcch); |
3148 | unbind_to (count, Qnil); | |
ef264c42 SM |
3149 | } |
3150 | ||
1a13852e | 3151 | DEFUN ("run-window-configuration-change-hook", Frun_window_configuration_change_hook, |
d9f07150 | 3152 | Srun_window_configuration_change_hook, 0, 1, 0, |
68f8f1c0 | 3153 | doc: /* Run `window-configuration-change-hook' for FRAME. |
d9f07150 | 3154 | If FRAME is omitted or nil, it defaults to the selected frame. */) |
c4b6914d | 3155 | (Lisp_Object frame) |
1a13852e | 3156 | { |
d9f07150 | 3157 | run_window_configuration_change_hook (decode_live_frame (frame)); |
1a13852e MR |
3158 | return Qnil; |
3159 | } | |
3160 | ||
5500c422 GM |
3161 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3162 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3163 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3164 | margins, fringes, and scroll-bar settings of the window are not | |
3165 | reset from the buffer's local settings. */ | |
7ab12479 | 3166 | |
5500c422 | 3167 | void |
971de7fb | 3168 | set_window_buffer (Lisp_Object window, Lisp_Object buffer, int run_hooks_p, int keep_margins_p) |
5500c422 GM |
3169 | { |
3170 | struct window *w = XWINDOW (window); | |
3171 | struct buffer *b = XBUFFER (buffer); | |
d311d28c | 3172 | ptrdiff_t count = SPECPDL_INDEX (); |
d3d50620 | 3173 | int samebuf = EQ (buffer, w->buffer); |
7ab12479 | 3174 | |
e8c17b81 | 3175 | wset_buffer (w, buffer); |
86e48436 RS |
3176 | |
3177 | if (EQ (window, selected_window)) | |
39eb03f1 | 3178 | bset_last_selected_window (b, window); |
beb4e312 | 3179 | |
c49a0495 KS |
3180 | /* Let redisplay errors through. */ |
3181 | b->display_error_modiff = 0; | |
3182 | ||
beb4e312 | 3183 | /* Update time stamps of buffer display. */ |
4b4deea2 | 3184 | if (INTEGERP (BVAR (b, display_count))) |
39eb03f1 PE |
3185 | bset_display_count (b, make_number (XINT (BVAR (b, display_count)) + 1)); |
3186 | bset_display_time (b, Fcurrent_time ()); | |
86e48436 | 3187 | |
e8c17b81 PE |
3188 | wset_window_end_pos (w, make_number (0)); |
3189 | wset_window_end_vpos (w, make_number (0)); | |
72af86bd | 3190 | memset (&w->last_cursor, 0, sizeof w->last_cursor); |
e8c17b81 | 3191 | wset_window_end_valid (w, Qnil); |
c3b232e4 | 3192 | if (!(keep_margins_p && samebuf)) |
23fe745a | 3193 | { /* If we're not actually changing the buffer, don't reset hscroll and |
c3b232e4 SM |
3194 | vscroll. This case happens for example when called from |
3195 | change_frame_size_1, where we use a dummy call to | |
3196 | Fset_window_buffer on the frame's selected window (and no other) | |
3197 | just in order to run window-configuration-change-hook. | |
3198 | Resetting hscroll and vscroll here is problematic for things like | |
3199 | image-mode and doc-view-mode since it resets the image's position | |
3200 | whenever we resize the frame. */ | |
80b00b08 | 3201 | w->hscroll = w->min_hscroll = 0; |
c3b232e4 | 3202 | w->vscroll = 0; |
d3d50620 DA |
3203 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
3204 | set_marker_restricted (w->start, | |
c3b232e4 SM |
3205 | make_number (b->last_window_start), |
3206 | buffer); | |
c98ff5dd DA |
3207 | w->start_at_line_beg = 0; |
3208 | w->force_start = 0; | |
80b00b08 DA |
3209 | w->last_modified = 0; |
3210 | w->last_overlay_modified = 0; | |
c3b232e4 SM |
3211 | } |
3212 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
3213 | I doubt it's worth the trouble. */ | |
7ab12479 | 3214 | windows_or_buffers_changed++; |
5b03d3c0 | 3215 | |
da39107c | 3216 | /* We must select BUFFER for running the window-scroll-functions. */ |
5b03d3c0 RS |
3217 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3218 | because that might itself be a local variable. */ | |
da39107c | 3219 | if (window_initialized) |
5b03d3c0 | 3220 | { |
66322887 | 3221 | record_unwind_current_buffer (); |
5b03d3c0 RS |
3222 | Fset_buffer (buffer); |
3223 | } | |
3224 | ||
d3d50620 | 3225 | XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type); |
a1562258 | 3226 | |
949cf20f KS |
3227 | if (!keep_margins_p) |
3228 | { | |
3229 | /* Set left and right marginal area width etc. from buffer. */ | |
3230 | ||
79fd290e | 3231 | /* This may call adjust_window_margins three times, so |
949cf20f | 3232 | temporarily disable window margins. */ |
d3d50620 DA |
3233 | Lisp_Object save_left = w->left_margin_cols; |
3234 | Lisp_Object save_right = w->right_margin_cols; | |
6b61353c | 3235 | |
e8c17b81 PE |
3236 | wset_left_margin_cols (w, Qnil); |
3237 | wset_right_margin_cols (w, Qnil); | |
949cf20f KS |
3238 | |
3239 | Fset_window_fringes (window, | |
4b4deea2 TT |
3240 | BVAR (b, left_fringe_width), BVAR (b, right_fringe_width), |
3241 | BVAR (b, fringes_outside_margins)); | |
949cf20f KS |
3242 | |
3243 | Fset_window_scroll_bars (window, | |
4b4deea2 TT |
3244 | BVAR (b, scroll_bar_width), |
3245 | BVAR (b, vertical_scroll_bar_type), Qnil); | |
949cf20f | 3246 | |
e8c17b81 PE |
3247 | wset_left_margin_cols (w, save_left); |
3248 | wset_right_margin_cols (w, save_right); | |
6b61353c | 3249 | |
949cf20f | 3250 | Fset_window_margins (window, |
4b4deea2 | 3251 | BVAR (b, left_margin_cols), BVAR (b, right_margin_cols)); |
949cf20f | 3252 | } |
7ab12479 | 3253 | |
5500c422 GM |
3254 | if (run_hooks_p) |
3255 | { | |
3256 | if (! NILP (Vwindow_scroll_functions)) | |
3257 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
d3d50620 | 3258 | Fmarker_position (w->start)); |
ef264c42 | 3259 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
5500c422 | 3260 | } |
543f5fb1 | 3261 | |
5b03d3c0 | 3262 | unbind_to (count, Qnil); |
5500c422 | 3263 | } |
5b03d3c0 | 3264 | |
a7ca3326 | 3265 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
d653c8cc | 3266 | doc: /* Make WINDOW display BUFFER-OR-NAME as its contents. |
52162052 | 3267 | WINDOW must be a live window and defaults to the selected one. |
9397e56f MR |
3268 | BUFFER-OR-NAME must be a buffer or the name of an existing buffer. |
3269 | ||
3270 | Optional third argument KEEP-MARGINS non-nil means that WINDOW's current | |
3271 | display margins, fringe widths, and scroll bar settings are preserved; | |
3272 | the default is to reset these from the local settings for BUFFER-OR-NAME | |
3273 | or the frame defaults. Return nil. | |
d653c8cc | 3274 | |
7bfac547 MR |
3275 | This function throws an error when WINDOW is strongly dedicated to its |
3276 | buffer (that is `window-dedicated-p' returns t for WINDOW) and does not | |
3277 | already display BUFFER-OR-NAME. | |
6cb4a892 | 3278 | |
8fef9de1 MR |
3279 | This function runs `window-scroll-functions' before running |
3280 | `window-configuration-change-hook'. */) | |
5842a27b | 3281 | (register Lisp_Object window, Lisp_Object buffer_or_name, Lisp_Object keep_margins) |
5500c422 | 3282 | { |
d653c8cc | 3283 | register Lisp_Object tem, buffer; |
52162052 | 3284 | register struct window *w = decode_live_window (window); |
5500c422 | 3285 | |
bed0c171 | 3286 | XSETWINDOW (window, w); |
d653c8cc | 3287 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 3288 | CHECK_BUFFER (buffer); |
e578f381 | 3289 | if (!BUFFER_LIVE_P (XBUFFER (buffer))) |
5500c422 GM |
3290 | error ("Attempt to display deleted buffer"); |
3291 | ||
d3d50620 | 3292 | tem = w->buffer; |
aac0c6e3 MR |
3293 | if (NILP (tem)) |
3294 | error ("Window is deleted"); | |
822995f8 | 3295 | else |
5500c422 | 3296 | { |
9397e56f MR |
3297 | if (!EQ (tem, buffer)) |
3298 | { | |
d3d50620 | 3299 | if (EQ (w->dedicated, Qt)) |
9397e56f MR |
3300 | /* WINDOW is strongly dedicated to its buffer, signal an |
3301 | error. */ | |
3302 | error ("Window is dedicated to `%s'", SDATA (BVAR (XBUFFER (tem), name))); | |
3303 | else | |
3304 | /* WINDOW is weakly dedicated to its buffer, reset | |
e4769531 | 3305 | dedication. */ |
e8c17b81 | 3306 | wset_dedicated (w, Qnil); |
9397e56f MR |
3307 | |
3308 | call1 (Qrecord_window_buffer, window); | |
3309 | } | |
5500c422 GM |
3310 | |
3311 | unshow_buffer (w); | |
3312 | } | |
3313 | ||
949cf20f | 3314 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 | 3315 | |
9397e56f | 3316 | return Qnil; |
c6932ecd | 3317 | } |
b7354ddf | 3318 | \f |
7e5cf297 | 3319 | static Lisp_Object |
971de7fb | 3320 | display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, Lisp_Object override_frame) |
d07f802a | 3321 | { |
87478b52 | 3322 | return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); |
d07f802a RS |
3323 | } |
3324 | ||
6b61353c KH |
3325 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, |
3326 | 0, 1, 0, | |
5a1048a5 | 3327 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 3328 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3329 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c | 3330 | displaying that buffer. */) |
5842a27b | 3331 | (Lisp_Object object) |
6b61353c KH |
3332 | { |
3333 | if (NILP (object)) | |
3334 | { | |
3335 | windows_or_buffers_changed++; | |
3336 | update_mode_lines++; | |
3337 | return Qt; | |
3338 | } | |
3339 | ||
3340 | if (WINDOWP (object)) | |
3341 | { | |
3342 | struct window *w = XWINDOW (object); | |
3343 | mark_window_display_accurate (object, 0); | |
c98ff5dd | 3344 | w->update_mode_line = 1; |
d3d50620 DA |
3345 | if (BUFFERP (w->buffer)) |
3346 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
6b61353c KH |
3347 | ++update_mode_lines; |
3348 | return Qt; | |
3349 | } | |
0cc1039f | 3350 | |
6b61353c KH |
3351 | if (STRINGP (object)) |
3352 | object = Fget_buffer (object); | |
c6afe371 DA |
3353 | if (BUFFERP (object) && BUFFER_LIVE_P (XBUFFER (object)) |
3354 | && buffer_window_count (XBUFFER (object))) | |
6b61353c | 3355 | { |
c6afe371 DA |
3356 | /* If buffer is live and shown in at least one window, find |
3357 | all windows showing this buffer and force update of them. */ | |
6b61353c KH |
3358 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); |
3359 | return NILP (object) ? Qnil : Qt; | |
3360 | } | |
3361 | ||
3362 | /* If nothing suitable was found, just return. | |
3363 | We could signal an error, but this feature will typically be used | |
3364 | asynchronously in timers or process sentinels, so we don't. */ | |
3365 | return Qnil; | |
3366 | } | |
3367 | ||
1f76f6f5 | 3368 | /* Obsolete since 24.3. */ |
7ab12479 | 3369 | void |
971de7fb | 3370 | temp_output_buffer_show (register Lisp_Object buf) |
7ab12479 JB |
3371 | { |
3372 | register struct buffer *old = current_buffer; | |
3373 | register Lisp_Object window; | |
3374 | register struct window *w; | |
3375 | ||
39eb03f1 | 3376 | bset_directory (XBUFFER (buf), BVAR (current_buffer, directory)); |
bccd3dd1 | 3377 | |
7ab12479 | 3378 | Fset_buffer (buf); |
c6367666 | 3379 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3380 | BEGV = BEG; |
3381 | ZV = Z; | |
3382 | SET_PT (BEG); | |
7ab12479 JB |
3383 | set_buffer_internal (old); |
3384 | ||
e67a1dea | 3385 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3386 | call1 (Vtemp_buffer_show_function, buf); |
3387 | else | |
3388 | { | |
4ee88440 | 3389 | window = display_buffer (buf, Qnil, Qnil); |
7ab12479 | 3390 | |
d3d50620 | 3391 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3392 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3393 | Vminibuf_scroll_window = window; |
3394 | w = XWINDOW (window); | |
80b00b08 DA |
3395 | w->hscroll = 0; |
3396 | w->min_hscroll = 0; | |
d3d50620 DA |
3397 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3398 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3399 | |
beb4e312 | 3400 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3401 | and its buffer current. */ |
dee091a3 | 3402 | { |
d311d28c | 3403 | ptrdiff_t count = SPECPDL_INDEX (); |
dee091a3 JD |
3404 | Lisp_Object prev_window, prev_buffer; |
3405 | prev_window = selected_window; | |
3406 | XSETBUFFER (prev_buffer, old); | |
3407 | ||
3408 | /* Select the window that was chosen, for running the hook. | |
3409 | Note: Both Fselect_window and select_window_norecord may | |
3410 | set-buffer to the buffer displayed in the window, | |
3411 | so we need to save the current buffer. --stef */ | |
3412 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3413 | record_unwind_protect (select_window_norecord, prev_window); | |
3414 | Fselect_window (window, Qt); | |
d3d50620 | 3415 | Fset_buffer (w->buffer); |
dee091a3 JD |
3416 | Frun_hooks (1, &Qtemp_buffer_show_hook); |
3417 | unbind_to (count, Qnil); | |
3418 | } | |
2cccc823 | 3419 | } |
7ab12479 JB |
3420 | } |
3421 | \f | |
1a13852e MR |
3422 | /* Make new window, have it replace WINDOW in window-tree, and make |
3423 | WINDOW its only vertical child (HORFLAG 1 means make WINDOW its only | |
3424 | horizontal child). */ | |
3425 | static void | |
3426 | make_parent_window (Lisp_Object window, int horflag) | |
3427 | { | |
3428 | Lisp_Object parent; | |
3429 | register struct window *o, *p; | |
1a13852e MR |
3430 | |
3431 | o = XWINDOW (window); | |
3432 | p = allocate_window (); | |
aa754e6a | 3433 | memcpy ((char *) p + sizeof (struct vectorlike_header), |
62efea5e | 3434 | (char *) o + sizeof (struct vectorlike_header), |
663e2b3f | 3435 | word_size * VECSIZE (struct window)); |
98a07056 DA |
3436 | /* P's buffer slot may change from nil to a buffer. */ |
3437 | adjust_window_count (p, 1); | |
1a13852e MR |
3438 | XSETWINDOW (parent, p); |
3439 | ||
45942c7d | 3440 | p->sequence_number = ++sequence_number; |
1a13852e MR |
3441 | |
3442 | replace_window (window, parent, 1); | |
3443 | ||
e8c17b81 PE |
3444 | wset_next (o, Qnil); |
3445 | wset_prev (o, Qnil); | |
3446 | wset_parent (o, parent); | |
1a13852e | 3447 | |
e8c17b81 PE |
3448 | wset_hchild (p, horflag ? window : Qnil); |
3449 | wset_vchild (p, horflag ? Qnil : window); | |
3450 | wset_start (p, Qnil); | |
3451 | wset_pointm (p, Qnil); | |
3452 | wset_buffer (p, Qnil); | |
3453 | wset_combination_limit (p, Qnil); | |
3454 | wset_window_parameters (p, Qnil); | |
1a13852e MR |
3455 | } |
3456 | ||
496e208e MR |
3457 | /* Make new window from scratch. */ |
3458 | Lisp_Object | |
3459 | make_window (void) | |
3460 | { | |
3461 | Lisp_Object window; | |
3462 | register struct window *w; | |
3463 | ||
3464 | w = allocate_window (); | |
62efea5e DA |
3465 | /* Initialize Lisp data. Note that allocate_window initializes all |
3466 | Lisp data to nil, so do it only for slots which should not be nil. */ | |
e8c17b81 PE |
3467 | wset_left_col (w, make_number (0)); |
3468 | wset_top_line (w, make_number (0)); | |
3469 | wset_total_lines (w, make_number (0)); | |
3470 | wset_total_cols (w, make_number (0)); | |
3471 | wset_normal_lines (w, make_float (1.0)); | |
3472 | wset_normal_cols (w, make_float (1.0)); | |
3473 | wset_new_total (w, make_number (0)); | |
3474 | wset_new_normal (w, make_number (0)); | |
3475 | wset_start (w, Fmake_marker ()); | |
3476 | wset_pointm (w, Fmake_marker ()); | |
3477 | wset_vertical_scroll_bar_type (w, Qt); | |
3478 | wset_window_end_pos (w, make_number (0)); | |
3479 | wset_window_end_vpos (w, make_number (0)); | |
e99f70c8 SM |
3480 | /* These Lisp fields are marked specially so they're not set to nil by |
3481 | allocate_window. */ | |
3482 | wset_prev_buffers (w, Qnil); | |
3483 | wset_next_buffers (w, Qnil); | |
62efea5e DA |
3484 | |
3485 | /* Initialize non-Lisp data. Note that allocate_window zeroes out all | |
3486 | non-Lisp data, so do it only for slots which should not be zero. */ | |
496e208e | 3487 | w->nrows_scale_factor = w->ncols_scale_factor = 1; |
496e208e MR |
3488 | w->phys_cursor_type = -1; |
3489 | w->phys_cursor_width = -1; | |
45942c7d | 3490 | w->sequence_number = ++sequence_number; |
62efea5e | 3491 | |
496e208e MR |
3492 | /* Reset window_list. */ |
3493 | Vwindow_list = Qnil; | |
3494 | /* Return window. */ | |
3495 | XSETWINDOW (window, w); | |
3496 | return window; | |
3497 | } | |
3498 | \f | |
3499 | DEFUN ("set-window-new-total", Fset_window_new_total, Sset_window_new_total, 2, 3, 0, | |
3500 | doc: /* Set new total size of WINDOW to SIZE. | |
52162052 | 3501 | WINDOW must be a valid window and defaults to the selected one. |
496e208e MR |
3502 | Return SIZE. |
3503 | ||
3504 | Optional argument ADD non-nil means add SIZE to the new total size of | |
3505 | WINDOW and return the sum. | |
3506 | ||
be7f5545 | 3507 | Note: This function does not operate on any child windows of WINDOW. */) |
496e208e MR |
3508 | (Lisp_Object window, Lisp_Object size, Lisp_Object add) |
3509 | { | |
52162052 | 3510 | struct window *w = decode_valid_window (window); |
496e208e MR |
3511 | |
3512 | CHECK_NUMBER (size); | |
3513 | if (NILP (add)) | |
e8c17b81 | 3514 | wset_new_total (w, size); |
496e208e | 3515 | else |
e8c17b81 | 3516 | wset_new_total (w, make_number (XINT (w->new_total) + XINT (size))); |
496e208e | 3517 | |
d3d50620 | 3518 | return w->new_total; |
496e208e MR |
3519 | } |
3520 | ||
3521 | DEFUN ("set-window-new-normal", Fset_window_new_normal, Sset_window_new_normal, 1, 2, 0, | |
3522 | doc: /* Set new normal size of WINDOW to SIZE. | |
52162052 | 3523 | WINDOW must be a valid window and defaults to the selected one. |
496e208e MR |
3524 | Return SIZE. |
3525 | ||
be7f5545 | 3526 | Note: This function does not operate on any child windows of WINDOW. */) |
496e208e MR |
3527 | (Lisp_Object window, Lisp_Object size) |
3528 | { | |
e8c17b81 PE |
3529 | wset_new_normal (decode_valid_window (window), size); |
3530 | return size; | |
7ab12479 JB |
3531 | } |
3532 | ||
1a13852e MR |
3533 | /* Return 1 if setting w->total_lines (w->total_cols if HORFLAG is |
3534 | non-zero) to w->new_total would result in correct heights (widths) | |
be7f5545 | 3535 | for window W and recursively all child windows of W. |
1a13852e MR |
3536 | |
3537 | Note: This function does not check any of `window-fixed-size-p', | |
3538 | `window-min-height' or `window-min-width'. It does check that window | |
3539 | sizes do not drop below one line (two columns). */ | |
4b66faf3 | 3540 | static int |
d615d6d2 | 3541 | window_resize_check (struct window *w, int horflag) |
1a13852e MR |
3542 | { |
3543 | struct window *c; | |
3544 | ||
d3d50620 | 3545 | if (!NILP (w->vchild)) |
1a13852e MR |
3546 | /* W is a vertical combination. */ |
3547 | { | |
d3d50620 | 3548 | c = XWINDOW (w->vchild); |
1a13852e | 3549 | if (horflag) |
be7f5545 | 3550 | /* All child windows of W must have the same width as W. */ |
1a13852e MR |
3551 | { |
3552 | while (c) | |
3553 | { | |
d3d50620 | 3554 | if ((XINT (c->new_total) != XINT (w->new_total)) |
d615d6d2 | 3555 | || !window_resize_check (c, horflag)) |
1a13852e | 3556 | return 0; |
d3d50620 | 3557 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3558 | } |
3559 | return 1; | |
3560 | } | |
3561 | else | |
be7f5545 MR |
3562 | /* The sum of the heights of the child windows of W must equal |
3563 | W's height. */ | |
1a13852e MR |
3564 | { |
3565 | int sum_of_sizes = 0; | |
3566 | while (c) | |
3567 | { | |
d615d6d2 | 3568 | if (!window_resize_check (c, horflag)) |
1a13852e | 3569 | return 0; |
d3d50620 DA |
3570 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); |
3571 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e | 3572 | } |
d3d50620 | 3573 | return (sum_of_sizes == XINT (w->new_total)); |
1a13852e MR |
3574 | } |
3575 | } | |
d3d50620 | 3576 | else if (!NILP (w->hchild)) |
1a13852e MR |
3577 | /* W is a horizontal combination. */ |
3578 | { | |
d3d50620 | 3579 | c = XWINDOW (w->hchild); |
1a13852e | 3580 | if (horflag) |
be7f5545 | 3581 | /* The sum of the widths of the child windows of W must equal W's |
1a13852e MR |
3582 | width. */ |
3583 | { | |
3584 | int sum_of_sizes = 0; | |
3585 | while (c) | |
3586 | { | |
d615d6d2 | 3587 | if (!window_resize_check (c, horflag)) |
1a13852e | 3588 | return 0; |
d3d50620 DA |
3589 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); |
3590 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e | 3591 | } |
d3d50620 | 3592 | return (sum_of_sizes == XINT (w->new_total)); |
1a13852e MR |
3593 | } |
3594 | else | |
be7f5545 | 3595 | /* All child windows of W must have the same height as W. */ |
1a13852e MR |
3596 | { |
3597 | while (c) | |
3598 | { | |
d3d50620 | 3599 | if ((XINT (c->new_total) != XINT (w->new_total)) |
d615d6d2 | 3600 | || !window_resize_check (c, horflag)) |
1a13852e | 3601 | return 0; |
d3d50620 | 3602 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3603 | } |
3604 | return 1; | |
3605 | } | |
3606 | } | |
3607 | else | |
3608 | /* A leaf window. Make sure it's not too small. The following | |
3609 | hardcodes the values of `window-safe-min-width' (2) and | |
3610 | `window-safe-min-height' (1) which are defined in window.el. */ | |
d3d50620 | 3611 | return XINT (w->new_total) >= (horflag ? 2 : 1); |
1a13852e MR |
3612 | } |
3613 | ||
3614 | /* Set w->total_lines (w->total_cols if HORIZONTAL is non-zero) to | |
be7f5545 MR |
3615 | w->new_total for window W and recursively all child windows of W. |
3616 | Also calculate and assign the new vertical (horizontal) start | |
3617 | positions of each of these windows. | |
1a13852e MR |
3618 | |
3619 | This function does not perform any error checks. Make sure you have | |
d615d6d2 | 3620 | run window_resize_check on W before applying this function. */ |
440a42e3 | 3621 | static void |
d615d6d2 | 3622 | window_resize_apply (struct window *w, int horflag) |
1a13852e | 3623 | { |
46a4ce9e | 3624 | struct window *c; |
1a13852e MR |
3625 | int pos; |
3626 | ||
3627 | /* Note: Assigning new_normal requires that the new total size of the | |
3628 | parent window has been set *before*. */ | |
3629 | if (horflag) | |
3630 | { | |
e8c17b81 | 3631 | wset_total_cols (w, w->new_total); |
d3d50620 | 3632 | if (NUMBERP (w->new_normal)) |
e8c17b81 | 3633 | wset_normal_cols (w, w->new_normal); |
1a13852e | 3634 | |
d3d50620 | 3635 | pos = XINT (w->left_col); |
1a13852e MR |
3636 | } |
3637 | else | |
3638 | { | |
e8c17b81 | 3639 | wset_total_lines (w, w->new_total); |
d3d50620 | 3640 | if (NUMBERP (w->new_normal)) |
e8c17b81 | 3641 | wset_normal_lines (w, w->new_normal); |
1a13852e | 3642 | |
d3d50620 | 3643 | pos = XINT (w->top_line); |
1a13852e MR |
3644 | } |
3645 | ||
d3d50620 | 3646 | if (!NILP (w->vchild)) |
1a13852e MR |
3647 | /* W is a vertical combination. */ |
3648 | { | |
d3d50620 | 3649 | c = XWINDOW (w->vchild); |
1a13852e MR |
3650 | while (c) |
3651 | { | |
3652 | if (horflag) | |
e8c17b81 | 3653 | wset_left_col (c, make_number (pos)); |
1a13852e | 3654 | else |
e8c17b81 | 3655 | wset_top_line (c, make_number (pos)); |
d615d6d2 | 3656 | window_resize_apply (c, horflag); |
1a13852e | 3657 | if (!horflag) |
d3d50620 DA |
3658 | pos = pos + XINT (c->total_lines); |
3659 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e MR |
3660 | } |
3661 | } | |
d3d50620 | 3662 | else if (!NILP (w->hchild)) |
1a13852e MR |
3663 | /* W is a horizontal combination. */ |
3664 | { | |
d3d50620 | 3665 | c = XWINDOW (w->hchild); |
1a13852e MR |
3666 | while (c) |
3667 | { | |
3668 | if (horflag) | |
e8c17b81 | 3669 | wset_left_col (c, make_number (pos)); |
1a13852e | 3670 | else |
e8c17b81 | 3671 | wset_top_line (c, make_number (pos)); |
d615d6d2 | 3672 | window_resize_apply (c, horflag); |
1a13852e | 3673 | if (horflag) |
d3d50620 DA |
3674 | pos = pos + XINT (c->total_cols); |
3675 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e MR |
3676 | } |
3677 | } | |
3678 | ||
3679 | /* Clear out some redisplay caches. */ | |
80b00b08 DA |
3680 | w->last_modified = 0; |
3681 | w->last_overlay_modified = 0; | |
1a13852e MR |
3682 | } |
3683 | ||
3684 | ||
d9f07150 | 3685 | DEFUN ("window-resize-apply", Fwindow_resize_apply, Swindow_resize_apply, 0, 2, 0, |
1a13852e | 3686 | doc: /* Apply requested size values for window-tree of FRAME. |
d9f07150 DA |
3687 | If FRAME is omitted or nil, it defaults to the selected frame. |
3688 | ||
3689 | Optional argument HORIZONTAL omitted or nil means apply requested | |
3690 | height values. HORIZONTAL non-nil means apply requested width values. | |
1a13852e MR |
3691 | |
3692 | This function checks whether the requested values sum up to a valid | |
be7f5545 MR |
3693 | window layout, recursively assigns the new sizes of all child windows |
3694 | and calculates and assigns the new start positions of these windows. | |
1a13852e MR |
3695 | |
3696 | Note: This function does not check any of `window-fixed-size-p', | |
3697 | `window-min-height' or `window-min-width'. All these checks have to | |
3698 | be applied on the Elisp level. */) | |
3699 | (Lisp_Object frame, Lisp_Object horizontal) | |
3700 | { | |
d9f07150 DA |
3701 | struct frame *f = decode_live_frame (frame); |
3702 | struct window *r = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
1a13852e MR |
3703 | int horflag = !NILP (horizontal); |
3704 | ||
d615d6d2 | 3705 | if (!window_resize_check (r, horflag) |
d3d50620 DA |
3706 | || ! EQ (r->new_total, |
3707 | (horflag ? r->total_cols : r->total_lines))) | |
1a13852e MR |
3708 | return Qnil; |
3709 | ||
4d7e6e51 | 3710 | block_input (); |
d615d6d2 | 3711 | window_resize_apply (r, horflag); |
1a13852e MR |
3712 | |
3713 | windows_or_buffers_changed++; | |
3714 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3715 | ||
3716 | adjust_glyphs (f); | |
4d7e6e51 | 3717 | unblock_input (); |
1a13852e MR |
3718 | |
3719 | run_window_configuration_change_hook (f); | |
3720 | ||
3721 | return Qt; | |
3722 | } | |
3723 | ||
3724 | ||
3725 | /* Resize frame F's windows when number of lines of F is set to SIZE. | |
3726 | HORFLAG 1 means resize windows when number of columns of F is set to | |
3727 | SIZE. | |
3728 | ||
3729 | This function can delete all windows but the selected one in order to | |
3730 | satisfy the request. The result will be meaningful if and only if | |
3731 | F's windows have meaningful sizes when you call this. */ | |
3732 | void | |
3733 | resize_frame_windows (struct frame *f, int size, int horflag) | |
3734 | { | |
e69b0960 | 3735 | Lisp_Object root = f->root_window; |
1a13852e | 3736 | struct window *r = XWINDOW (root); |
e69b0960 | 3737 | Lisp_Object mini = f->minibuffer_window; |
1a13852e MR |
3738 | struct window *m; |
3739 | /* new_size is the new size of the frame's root window. */ | |
3740 | int new_size = (horflag | |
3741 | ? size | |
3742 | : (size | |
3743 | - FRAME_TOP_MARGIN (f) | |
3744 | - ((FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3745 | ? 1 : 0))); | |
3746 | ||
e8c17b81 | 3747 | wset_top_line (r, make_number (FRAME_TOP_MARGIN (f))); |
d3d50620 | 3748 | if (NILP (r->vchild) && NILP (r->hchild)) |
1a13852e MR |
3749 | /* For a leaf root window just set the size. */ |
3750 | if (horflag) | |
e8c17b81 | 3751 | wset_total_cols (r, make_number (new_size)); |
1a13852e | 3752 | else |
e8c17b81 | 3753 | wset_total_lines (r, make_number (new_size)); |
1a13852e MR |
3754 | else |
3755 | { | |
3756 | /* old_size is the old size of the frame's root window. */ | |
f00af5b1 | 3757 | int old_size = XFASTINT (horflag ? r->total_cols |
d3d50620 | 3758 | : r->total_lines); |
1a13852e MR |
3759 | Lisp_Object delta; |
3760 | ||
3761 | XSETINT (delta, new_size - old_size); | |
3762 | /* Try a "normal" resize first. */ | |
3763 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qnil); | |
3a45383a | 3764 | if (window_resize_check (r, horflag) |
d3d50620 | 3765 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3766 | window_resize_apply (r, horflag); |
1a13852e MR |
3767 | else |
3768 | { | |
3769 | /* Try with "reasonable" minimum sizes next. */ | |
3770 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qt); | |
d615d6d2 | 3771 | if (window_resize_check (r, horflag) |
d3d50620 | 3772 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3773 | window_resize_apply (r, horflag); |
1a13852e MR |
3774 | else |
3775 | { | |
3776 | /* Finally, try with "safe" minimum sizes. */ | |
3777 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qsafe); | |
d615d6d2 | 3778 | if (window_resize_check (r, horflag) |
d3d50620 | 3779 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3780 | window_resize_apply (r, horflag); |
1a13852e MR |
3781 | else |
3782 | { | |
3783 | /* We lost. Delete all windows but the frame's | |
3784 | selected one. */ | |
e69b0960 | 3785 | root = f->selected_window; |
1a13852e MR |
3786 | Fdelete_other_windows_internal (root, Qnil); |
3787 | if (horflag) | |
e8c17b81 | 3788 | wset_total_cols (XWINDOW (root), make_number (new_size)); |
1a13852e | 3789 | else |
e8c17b81 | 3790 | wset_total_lines (XWINDOW (root), make_number (new_size)); |
1a13852e MR |
3791 | } |
3792 | } | |
3793 | } | |
3794 | } | |
3795 | ||
3796 | if (FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3797 | { | |
3798 | m = XWINDOW (mini); | |
3799 | if (horflag) | |
e8c17b81 | 3800 | wset_total_cols (m, make_number (size)); |
1a13852e MR |
3801 | else |
3802 | { | |
3803 | /* Are we sure we always want 1 line here? */ | |
e8c17b81 PE |
3804 | wset_total_lines (m, make_number (1)); |
3805 | wset_top_line | |
3806 | (m, make_number (XINT (r->top_line) + XINT (r->total_lines))); | |
1a13852e MR |
3807 | } |
3808 | } | |
dca778d5 MR |
3809 | |
3810 | windows_or_buffers_changed++; | |
1a13852e MR |
3811 | } |
3812 | ||
3813 | ||
3814 | DEFUN ("split-window-internal", Fsplit_window_internal, Ssplit_window_internal, 4, 4, 0, | |
3815 | doc: /* Split window OLD. | |
3816 | Second argument TOTAL-SIZE specifies the number of lines or columns of the | |
9397e56f | 3817 | new window. In any case TOTAL-SIZE must be a positive integer. |
1a13852e MR |
3818 | |
3819 | Third argument SIDE nil (or `below') specifies that the new window shall | |
3820 | be located below WINDOW. SIDE `above' means the new window shall be | |
3821 | located above WINDOW. In both cases TOTAL-SIZE specifies the number of | |
3822 | lines of the new window including space reserved for the mode and/or | |
3823 | header line. | |
3824 | ||
3825 | SIDE t (or `right') specifies that the new window shall be located on | |
3826 | the right side of WINDOW. SIDE `left' means the new window shall be | |
3827 | located on the left of WINDOW. In both cases TOTAL-SIZE specifies the | |
3828 | number of columns of the new window including space reserved for fringes | |
3829 | and the scrollbar or a divider column. | |
3830 | ||
3831 | Fourth argument NORMAL-SIZE specifies the normal size of the new window | |
3832 | according to the SIDE argument. | |
3833 | ||
3834 | The new total and normal sizes of all involved windows must have been | |
3835 | set correctly. See the code of `split-window' for how this is done. */) | |
3836 | (Lisp_Object old, Lisp_Object total_size, Lisp_Object side, Lisp_Object normal_size) | |
3837 | { | |
3838 | /* OLD (*o) is the window we have to split. (*p) is either OLD's | |
3839 | parent window or an internal window we have to install as OLD's new | |
3840 | parent. REFERENCE (*r) must denote a live window, or is set to OLD | |
3841 | provided OLD is a leaf window, or to the frame's selected window. | |
3842 | NEW (*n) is the new window created with some parameters taken from | |
3843 | REFERENCE (*r). */ | |
3844 | register Lisp_Object new, frame, reference; | |
3845 | register struct window *o, *p, *n, *r; | |
3846 | struct frame *f; | |
3847 | int horflag | |
3848 | /* HORFLAG is 1 when we split side-by-side, 0 otherwise. */ | |
3849 | = EQ (side, Qt) || EQ (side, Qleft) || EQ (side, Qright); | |
b6f67890 | 3850 | int combination_limit = 0; |
1a13852e MR |
3851 | |
3852 | CHECK_WINDOW (old); | |
3853 | o = XWINDOW (old); | |
3854 | frame = WINDOW_FRAME (o); | |
3855 | f = XFRAME (frame); | |
3856 | ||
3857 | CHECK_NUMBER (total_size); | |
3858 | ||
b6f67890 MR |
3859 | /* Set combination_limit to 1 if we have to make a new parent window. |
3860 | We do that if either `window-combination-limit' is t, or OLD has no | |
3861 | parent, or OLD is ortho-combined. */ | |
3862 | combination_limit = | |
8e17c9ba | 3863 | EQ (Vwindow_combination_limit, Qt) |
d3d50620 | 3864 | || NILP (o->parent) |
1a13852e | 3865 | || NILP (horflag |
d3d50620 DA |
3866 | ? (XWINDOW (o->parent)->hchild) |
3867 | : (XWINDOW (o->parent)->vchild)); | |
1a13852e MR |
3868 | |
3869 | /* We need a live reference window to initialize some parameters. */ | |
3870 | if (WINDOW_LIVE_P (old)) | |
3871 | /* OLD is live, use it as reference window. */ | |
3872 | reference = old; | |
3873 | else | |
3874 | /* Use the frame's selected window as reference window. */ | |
3875 | reference = FRAME_SELECTED_WINDOW (f); | |
3876 | r = XWINDOW (reference); | |
3877 | ||
3878 | /* The following bugs are caught by `split-window'. */ | |
3879 | if (MINI_WINDOW_P (o)) | |
3880 | error ("Attempt to split minibuffer window"); | |
3881 | else if (XINT (total_size) < (horflag ? 2 : 1)) | |
3882 | error ("Size of new window too small (after split)"); | |
a0c2d0ae MR |
3883 | else if (!combination_limit && !NILP (Vwindow_combination_resize)) |
3884 | /* `window-combination-resize' non-nil means try to resize OLD's siblings | |
1a13852e MR |
3885 | proportionally. */ |
3886 | { | |
d3d50620 | 3887 | p = XWINDOW (o->parent); |
1a13852e | 3888 | /* Temporarily pretend we split the parent window. */ |
e8c17b81 PE |
3889 | wset_new_total |
3890 | (p, make_number (XINT (horflag ? p->total_cols : p->total_lines) | |
077288cf | 3891 | - XINT (total_size))); |
d615d6d2 | 3892 | if (!window_resize_check (p, horflag)) |
1a13852e MR |
3893 | error ("Window sizes don't fit"); |
3894 | else | |
3895 | /* Undo the temporary pretension. */ | |
e8c17b81 | 3896 | wset_new_total (p, horflag ? p->total_cols : p->total_lines); |
1a13852e MR |
3897 | } |
3898 | else | |
3899 | { | |
d615d6d2 | 3900 | if (!window_resize_check (o, horflag)) |
1a13852e | 3901 | error ("Resizing old window failed"); |
d3d50620 DA |
3902 | else if (XINT (total_size) + XINT (o->new_total) |
3903 | != XINT (horflag ? o->total_cols : o->total_lines)) | |
1a13852e MR |
3904 | error ("Sum of sizes of old and new window don't fit"); |
3905 | } | |
3906 | ||
3907 | /* This is our point of no return. */ | |
b6f67890 | 3908 | if (combination_limit) |
1a13852e MR |
3909 | { |
3910 | /* Save the old value of o->normal_cols/lines. It gets corrupted | |
3911 | by make_parent_window and we need it below for assigning it to | |
3912 | p->new_normal. */ | |
3a45383a | 3913 | Lisp_Object new_normal |
d3d50620 | 3914 | = horflag ? o->normal_cols : o->normal_lines; |
1a13852e MR |
3915 | |
3916 | make_parent_window (old, horflag); | |
d3d50620 | 3917 | p = XWINDOW (o->parent); |
fdaf534a MR |
3918 | if (EQ (Vwindow_combination_limit, Qt)) |
3919 | /* Store t in the new parent's combination_limit slot to avoid | |
3920 | that its children get merged into another window. */ | |
3921 | wset_combination_limit (p, Qt); | |
1a13852e | 3922 | /* These get applied below. */ |
e8c17b81 PE |
3923 | wset_new_total (p, horflag ? o->total_cols : o->total_lines); |
3924 | wset_new_normal (p, new_normal); | |
1a13852e MR |
3925 | } |
3926 | else | |
d3d50620 | 3927 | p = XWINDOW (o->parent); |
1a13852e MR |
3928 | |
3929 | windows_or_buffers_changed++; | |
3930 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3931 | new = make_window (); | |
3932 | n = XWINDOW (new); | |
e8c17b81 PE |
3933 | wset_frame (n, frame); |
3934 | wset_parent (n, o->parent); | |
3935 | wset_vchild (n, Qnil); | |
3936 | wset_hchild (n, Qnil); | |
1a13852e MR |
3937 | |
3938 | if (EQ (side, Qabove) || EQ (side, Qleft)) | |
3939 | { | |
e8c17b81 | 3940 | wset_prev (n, o->prev); |
d3d50620 | 3941 | if (NILP (n->prev)) |
1a13852e | 3942 | if (horflag) |
e8c17b81 | 3943 | wset_hchild (p, new); |
1a13852e | 3944 | else |
e8c17b81 | 3945 | wset_vchild (p, new); |
1a13852e | 3946 | else |
e8c17b81 PE |
3947 | wset_next (XWINDOW (n->prev), new); |
3948 | wset_next (n, old); | |
3949 | wset_prev (o, new); | |
1a13852e MR |
3950 | } |
3951 | else | |
3952 | { | |
e8c17b81 | 3953 | wset_next (n, o->next); |
d3d50620 | 3954 | if (!NILP (n->next)) |
e8c17b81 PE |
3955 | wset_prev (XWINDOW (n->next), new); |
3956 | wset_prev (n, old); | |
3957 | wset_next (o, new); | |
1a13852e MR |
3958 | } |
3959 | ||
e8c17b81 | 3960 | wset_window_end_valid (n, Qnil); |
1a13852e MR |
3961 | memset (&n->last_cursor, 0, sizeof n->last_cursor); |
3962 | ||
3963 | /* Get special geometry settings from reference window. */ | |
e8c17b81 PE |
3964 | wset_left_margin_cols (n, r->left_margin_cols); |
3965 | wset_right_margin_cols (n, r->right_margin_cols); | |
3966 | wset_left_fringe_width (n, r->left_fringe_width); | |
3967 | wset_right_fringe_width (n, r->right_fringe_width); | |
1a13852e | 3968 | n->fringes_outside_margins = r->fringes_outside_margins; |
e8c17b81 PE |
3969 | wset_scroll_bar_width (n, r->scroll_bar_width); |
3970 | wset_vertical_scroll_bar_type (n, r->vertical_scroll_bar_type); | |
1a13852e | 3971 | |
1a13852e MR |
3972 | /* Directly assign orthogonal coordinates and sizes. */ |
3973 | if (horflag) | |
3974 | { | |
e8c17b81 PE |
3975 | wset_top_line (n, o->top_line); |
3976 | wset_total_lines (n, o->total_lines); | |
1a13852e MR |
3977 | } |
3978 | else | |
3979 | { | |
e8c17b81 PE |
3980 | wset_left_col (n, o->left_col); |
3981 | wset_total_cols (n, o->total_cols); | |
1a13852e MR |
3982 | } |
3983 | ||
d615d6d2 | 3984 | /* Iso-coordinates and sizes are assigned by window_resize_apply, |
1a13852e | 3985 | get them ready here. */ |
e8c17b81 PE |
3986 | wset_new_total (n, total_size); |
3987 | wset_new_normal (n, normal_size); | |
1a13852e | 3988 | |
4d7e6e51 | 3989 | block_input (); |
d615d6d2 | 3990 | window_resize_apply (p, horflag); |
1a13852e MR |
3991 | adjust_glyphs (f); |
3992 | /* Set buffer of NEW to buffer of reference window. Don't run | |
3993 | any hooks. */ | |
d3d50620 | 3994 | set_window_buffer (new, r->buffer, 0, 1); |
4d7e6e51 | 3995 | unblock_input (); |
1a13852e MR |
3996 | |
3997 | /* Maybe we should run the scroll functions in Elisp (which already | |
3998 | runs the configuration change hook). */ | |
3999 | if (! NILP (Vwindow_scroll_functions)) | |
4000 | run_hook_with_args_2 (Qwindow_scroll_functions, new, | |
d3d50620 | 4001 | Fmarker_position (n->start)); |
1a13852e MR |
4002 | /* Return NEW. */ |
4003 | return new; | |
4004 | } | |
4005 | ||
4006 | ||
4007 | DEFUN ("delete-window-internal", Fdelete_window_internal, Sdelete_window_internal, 1, 1, 0, | |
4008 | doc: /* Remove WINDOW from its frame. | |
87e68db4 JB |
4009 | WINDOW defaults to the selected window. Return nil. |
4010 | Signal an error when WINDOW is the only window on its frame. */) | |
1a13852e MR |
4011 | (register Lisp_Object window) |
4012 | { | |
4013 | register Lisp_Object parent, sibling, frame, root; | |
4014 | struct window *w, *p, *s, *r; | |
4015 | struct frame *f; | |
4016 | int horflag; | |
4017 | int before_sibling = 0; | |
4018 | ||
4019 | w = decode_any_window (window); | |
4020 | XSETWINDOW (window, w); | |
d3d50620 DA |
4021 | if (NILP (w->buffer) |
4022 | && NILP (w->hchild) && NILP (w->vchild)) | |
1a13852e MR |
4023 | /* It's a no-op to delete an already deleted window. */ |
4024 | return Qnil; | |
4025 | ||
d3d50620 | 4026 | parent = w->parent; |
1a13852e MR |
4027 | if (NILP (parent)) |
4028 | /* Never delete a minibuffer or frame root window. */ | |
4029 | error ("Attempt to delete minibuffer or sole ordinary window"); | |
d3d50620 | 4030 | else if (NILP (w->prev) && NILP (w->next)) |
1a13852e MR |
4031 | /* Rather bow out here, this case should be handled on the Elisp |
4032 | level. */ | |
4033 | error ("Attempt to delete sole window of parent"); | |
4034 | ||
4035 | p = XWINDOW (parent); | |
d3d50620 | 4036 | horflag = NILP (p->vchild); |
1a13852e MR |
4037 | |
4038 | frame = WINDOW_FRAME (w); | |
4039 | f = XFRAME (frame); | |
4040 | ||
4041 | root = FRAME_ROOT_WINDOW (f); | |
4042 | r = XWINDOW (root); | |
4043 | ||
4044 | /* Unlink WINDOW from window tree. */ | |
d3d50620 | 4045 | if (NILP (w->prev)) |
1a13852e MR |
4046 | /* Get SIBLING below (on the right of) WINDOW. */ |
4047 | { | |
4048 | /* before_sibling 1 means WINDOW is the first child of its | |
4049 | parent and thus before the sibling. */ | |
4050 | before_sibling = 1; | |
d3d50620 | 4051 | sibling = w->next; |
1a13852e | 4052 | s = XWINDOW (sibling); |
e8c17b81 | 4053 | wset_prev (s, Qnil); |
1a13852e | 4054 | if (horflag) |
e8c17b81 | 4055 | wset_hchild (p, sibling); |
1a13852e | 4056 | else |
e8c17b81 | 4057 | wset_vchild (p, sibling); |
1a13852e MR |
4058 | } |
4059 | else | |
4060 | /* Get SIBLING above (on the left of) WINDOW. */ | |
4061 | { | |
d3d50620 | 4062 | sibling = w->prev; |
1a13852e | 4063 | s = XWINDOW (sibling); |
e8c17b81 | 4064 | wset_next (s, w->next); |
d3d50620 | 4065 | if (!NILP (s->next)) |
e8c17b81 | 4066 | wset_prev (XWINDOW (s->next), sibling); |
7ab12479 JB |
4067 | } |
4068 | ||
d615d6d2 | 4069 | if (window_resize_check (r, horflag) |
d3d50620 DA |
4070 | && EQ (r->new_total, |
4071 | (horflag ? r->total_cols : r->total_lines))) | |
562dd5e9 MR |
4072 | /* We can delete WINDOW now. */ |
4073 | { | |
95986d52 | 4074 | |
562dd5e9 | 4075 | /* Block input. */ |
4d7e6e51 | 4076 | block_input (); |
d615d6d2 | 4077 | window_resize_apply (p, horflag); |
0d384044 | 4078 | |
95986d52 CY |
4079 | /* If this window is referred to by the dpyinfo's mouse |
4080 | highlight, invalidate that slot to be safe (Bug#9904). */ | |
4c5501e9 EZ |
4081 | if (!FRAME_INITIAL_P (f)) |
4082 | { | |
4083 | Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f); | |
4084 | ||
4085 | if (EQ (hlinfo->mouse_face_window, window)) | |
4086 | hlinfo->mouse_face_window = Qnil; | |
4087 | } | |
95986d52 | 4088 | |
562dd5e9 MR |
4089 | windows_or_buffers_changed++; |
4090 | Vwindow_list = Qnil; | |
4091 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
0d384044 | 4092 | |
e8c17b81 | 4093 | wset_next (w, Qnil); /* Don't delete w->next too. */ |
562dd5e9 | 4094 | free_window_matrices (w); |
bd99e242 | 4095 | |
d3d50620 | 4096 | if (!NILP (w->vchild)) |
0d384044 | 4097 | { |
d3d50620 | 4098 | delete_all_child_windows (w->vchild); |
e8c17b81 | 4099 | wset_vchild (w, Qnil); |
0d384044 | 4100 | } |
d3d50620 | 4101 | else if (!NILP (w->hchild)) |
bd99e242 | 4102 | { |
d3d50620 | 4103 | delete_all_child_windows (w->hchild); |
e8c17b81 | 4104 | wset_hchild (w, Qnil); |
bd99e242 | 4105 | } |
d3d50620 | 4106 | else if (!NILP (w->buffer)) |
bd99e242 | 4107 | { |
562dd5e9 | 4108 | unshow_buffer (w); |
d3d50620 DA |
4109 | unchain_marker (XMARKER (w->pointm)); |
4110 | unchain_marker (XMARKER (w->start)); | |
e8c17b81 | 4111 | wset_buffer (w, Qnil); |
bd99e242 RS |
4112 | } |
4113 | ||
d3d50620 | 4114 | if (NILP (s->prev) && NILP (s->next)) |
562dd5e9 MR |
4115 | /* A matrjoshka where SIBLING has become the only child of |
4116 | PARENT. */ | |
c32de52a | 4117 | { |
562dd5e9 MR |
4118 | /* Put SIBLING into PARENT's place. */ |
4119 | replace_window (parent, sibling, 0); | |
4120 | /* Have SIBLING inherit the following three slot values from | |
b6f67890 | 4121 | PARENT (the combination_limit slot is not inherited). */ |
e8c17b81 PE |
4122 | wset_normal_cols (s, p->normal_cols); |
4123 | wset_normal_lines (s, p->normal_lines); | |
562dd5e9 | 4124 | /* Mark PARENT as deleted. */ |
e8c17b81 PE |
4125 | wset_vchild (p, Qnil); |
4126 | wset_hchild (p, Qnil); | |
562dd5e9 MR |
4127 | /* Try to merge SIBLING into its new parent. */ |
4128 | recombine_windows (sibling); | |
c32de52a RS |
4129 | } |
4130 | ||
562dd5e9 MR |
4131 | adjust_glyphs (f); |
4132 | ||
4133 | if (!WINDOW_LIVE_P (FRAME_SELECTED_WINDOW (f))) | |
4134 | /* We deleted the frame's selected window. */ | |
0d384044 | 4135 | { |
562dd5e9 MR |
4136 | /* Use the frame's first window as fallback ... */ |
4137 | Lisp_Object new_selected_window = Fframe_first_window (frame); | |
4138 | /* ... but preferably use its most recently used window. */ | |
4139 | Lisp_Object mru_window; | |
0d384044 | 4140 | |
562dd5e9 MR |
4141 | /* `get-mru-window' might fail for some reason so play it safe |
4142 | - promote the first window _without recording it_ first. */ | |
4143 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
4144 | Fselect_window (new_selected_window, Qt); | |
4145 | else | |
f00af5b1 | 4146 | fset_selected_window (f, new_selected_window); |
0d384044 | 4147 | |
4d7e6e51 | 4148 | unblock_input (); |
0d384044 | 4149 | |
562dd5e9 MR |
4150 | /* Now look whether `get-mru-window' gets us something. */ |
4151 | mru_window = call1 (Qget_mru_window, frame); | |
4152 | if (WINDOW_LIVE_P (mru_window) | |
d3d50620 | 4153 | && EQ (XWINDOW (mru_window)->frame, frame)) |
562dd5e9 | 4154 | new_selected_window = mru_window; |
bd99e242 | 4155 | |
562dd5e9 MR |
4156 | /* If all ended up well, we now promote the mru window. */ |
4157 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
4158 | Fselect_window (new_selected_window, Qnil); | |
4159 | else | |
f00af5b1 | 4160 | fset_selected_window (f, new_selected_window); |
0d384044 RS |
4161 | } |
4162 | else | |
4d7e6e51 | 4163 | unblock_input (); |
0d384044 | 4164 | |
562dd5e9 MR |
4165 | /* Must be run by the caller: |
4166 | run_window_configuration_change_hook (f); */ | |
0d384044 | 4167 | } |
562dd5e9 MR |
4168 | else |
4169 | /* We failed: Relink WINDOW into window tree. */ | |
0d384044 | 4170 | { |
562dd5e9 MR |
4171 | if (before_sibling) |
4172 | { | |
e8c17b81 | 4173 | wset_prev (s, window); |
562dd5e9 | 4174 | if (horflag) |
e8c17b81 | 4175 | wset_hchild (p, window); |
562dd5e9 | 4176 | else |
e8c17b81 | 4177 | wset_vchild (p, window); |
562dd5e9 MR |
4178 | } |
4179 | else | |
4180 | { | |
e8c17b81 | 4181 | wset_next (s, window); |
d3d50620 | 4182 | if (!NILP (w->next)) |
e8c17b81 | 4183 | wset_prev (XWINDOW (w->next), window); |
562dd5e9 MR |
4184 | } |
4185 | error ("Deletion failed"); | |
0d384044 RS |
4186 | } |
4187 | ||
0d384044 RS |
4188 | return Qnil; |
4189 | } | |
f984d4fc GM |
4190 | \f |
4191 | /*********************************************************************** | |
4192 | Resizing Mini-Windows | |
4193 | ***********************************************************************/ | |
4194 | ||
562dd5e9 MR |
4195 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we |
4196 | can. */ | |
4197 | void | |
4198 | grow_mini_window (struct window *w, int delta) | |
f984d4fc | 4199 | { |
d3d50620 | 4200 | struct frame *f = XFRAME (w->frame); |
562dd5e9 MR |
4201 | struct window *r; |
4202 | Lisp_Object root, value; | |
f984d4fc | 4203 | |
a54e2c05 DA |
4204 | eassert (MINI_WINDOW_P (w)); |
4205 | eassert (delta >= 0); | |
f984d4fc | 4206 | |
562dd5e9 MR |
4207 | root = FRAME_ROOT_WINDOW (f); |
4208 | r = XWINDOW (root); | |
5386012d MR |
4209 | value = call2 (Qwindow_resize_root_window_vertically, |
4210 | root, make_number (- delta)); | |
d615d6d2 | 4211 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4212 | { |
4d7e6e51 | 4213 | block_input (); |
d615d6d2 | 4214 | window_resize_apply (r, 0); |
f984d4fc | 4215 | |
562dd5e9 | 4216 | /* Grow the mini-window. */ |
e8c17b81 PE |
4217 | wset_top_line |
4218 | (w, make_number (XFASTINT (r->top_line) + XFASTINT (r->total_lines))); | |
4219 | wset_total_lines | |
4220 | (w, make_number (XFASTINT (w->total_lines) - XINT (value))); | |
80b00b08 DA |
4221 | w->last_modified = 0; |
4222 | w->last_overlay_modified = 0; | |
f984d4fc | 4223 | |
dca778d5 | 4224 | windows_or_buffers_changed++; |
562dd5e9 | 4225 | adjust_glyphs (f); |
4d7e6e51 | 4226 | unblock_input (); |
f984d4fc GM |
4227 | } |
4228 | } | |
4229 | ||
4230 | ||
562dd5e9 MR |
4231 | /* Shrink mini-window W. */ |
4232 | void | |
4233 | shrink_mini_window (struct window *w) | |
f984d4fc | 4234 | { |
d3d50620 | 4235 | struct frame *f = XFRAME (w->frame); |
562dd5e9 MR |
4236 | struct window *r; |
4237 | Lisp_Object root, value; | |
4238 | EMACS_INT size; | |
43b4a21f | 4239 | |
a54e2c05 | 4240 | eassert (MINI_WINDOW_P (w)); |
177c0ea7 | 4241 | |
d3d50620 | 4242 | size = XINT (w->total_lines); |
562dd5e9 MR |
4243 | if (size > 1) |
4244 | { | |
4245 | root = FRAME_ROOT_WINDOW (f); | |
4246 | r = XWINDOW (root); | |
5386012d | 4247 | value = call2 (Qwindow_resize_root_window_vertically, |
562dd5e9 | 4248 | root, make_number (size - 1)); |
d615d6d2 | 4249 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4250 | { |
4d7e6e51 | 4251 | block_input (); |
d615d6d2 | 4252 | window_resize_apply (r, 0); |
43b4a21f | 4253 | |
562dd5e9 | 4254 | /* Shrink the mini-window. */ |
e8c17b81 PE |
4255 | wset_top_line (w, make_number (XFASTINT (r->top_line) |
4256 | + XFASTINT (r->total_lines))); | |
4257 | wset_total_lines (w, make_number (1)); | |
43b4a21f | 4258 | |
80b00b08 DA |
4259 | w->last_modified = 0; |
4260 | w->last_overlay_modified = 0; | |
43b4a21f | 4261 | |
dca778d5 | 4262 | windows_or_buffers_changed++; |
562dd5e9 | 4263 | adjust_glyphs (f); |
4d7e6e51 | 4264 | unblock_input (); |
f984d4fc | 4265 | } |
562dd5e9 MR |
4266 | /* If the above failed for whatever strange reason we must make a |
4267 | one window frame here. The same routine will be needed when | |
4268 | shrinking the frame (and probably when making the initial | |
4269 | *scratch* window). For the moment leave things as they are. */ | |
f984d4fc GM |
4270 | } |
4271 | } | |
4272 | ||
562dd5e9 MR |
4273 | DEFUN ("resize-mini-window-internal", Fresize_mini_window_internal, Sresize_mini_window_internal, 1, 1, 0, |
4274 | doc: /* Resize minibuffer window WINDOW. */) | |
4275 | (Lisp_Object window) | |
f984d4fc | 4276 | { |
562dd5e9 MR |
4277 | struct window *w = XWINDOW (window); |
4278 | struct window *r; | |
4279 | struct frame *f; | |
4280 | int height; | |
177c0ea7 | 4281 | |
562dd5e9 | 4282 | CHECK_WINDOW (window); |
d3d50620 | 4283 | f = XFRAME (w->frame); |
177c0ea7 | 4284 | |
d3d50620 | 4285 | if (!EQ (FRAME_MINIBUF_WINDOW (XFRAME (w->frame)), window)) |
562dd5e9 MR |
4286 | error ("Not a valid minibuffer window"); |
4287 | else if (FRAME_MINIBUF_ONLY_P (f)) | |
4288 | error ("Cannot resize a minibuffer-only frame"); | |
177c0ea7 | 4289 | |
562dd5e9 | 4290 | r = XWINDOW (FRAME_ROOT_WINDOW (f)); |
d3d50620 | 4291 | height = XINT (r->total_lines) + XINT (w->total_lines); |
d615d6d2 | 4292 | if (window_resize_check (r, 0) |
d3d50620 DA |
4293 | && XINT (w->new_total) > 0 |
4294 | && height == XINT (r->new_total) + XINT (w->new_total)) | |
f984d4fc | 4295 | { |
4d7e6e51 | 4296 | block_input (); |
d615d6d2 | 4297 | window_resize_apply (r, 0); |
f984d4fc | 4298 | |
e8c17b81 PE |
4299 | wset_total_lines (w, w->new_total); |
4300 | wset_top_line (w, make_number (XINT (r->top_line) | |
4301 | + XINT (r->total_lines))); | |
177c0ea7 | 4302 | |
562dd5e9 MR |
4303 | windows_or_buffers_changed++; |
4304 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
f984d4fc | 4305 | adjust_glyphs (f); |
4d7e6e51 | 4306 | unblock_input (); |
f984d4fc | 4307 | |
562dd5e9 MR |
4308 | run_window_configuration_change_hook (f); |
4309 | return Qt; | |
86c8e823 | 4310 | } |
562dd5e9 | 4311 | else error ("Failed to resize minibuffer window"); |
f984d4fc | 4312 | } |
562dd5e9 | 4313 | \f |
5500c422 GM |
4314 | /* Mark window cursors off for all windows in the window tree rooted |
4315 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4316 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4317 | the frame are cleared. */ | |
4318 | ||
4319 | void | |
971de7fb | 4320 | mark_window_cursors_off (struct window *w) |
5500c422 GM |
4321 | { |
4322 | while (w) | |
4323 | { | |
d3d50620 DA |
4324 | if (!NILP (w->hchild)) |
4325 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4326 | else if (!NILP (w->vchild)) | |
4327 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
5500c422 GM |
4328 | else |
4329 | w->phys_cursor_on_p = 0; | |
4330 | ||
d3d50620 | 4331 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
5500c422 GM |
4332 | } |
4333 | } | |
4334 | ||
4335 | ||
e9c195b1 | 4336 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4337 | |
4338 | int | |
971de7fb | 4339 | window_internal_height (struct window *w) |
7ab12479 | 4340 | { |
d3d50620 | 4341 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4342 | |
e9c195b1 GM |
4343 | if (!MINI_WINDOW_P (w)) |
4344 | { | |
d3d50620 DA |
4345 | if (!NILP (w->parent) |
4346 | || !NILP (w->vchild) | |
4347 | || !NILP (w->hchild) | |
4348 | || !NILP (w->next) | |
4349 | || !NILP (w->prev) | |
e9c195b1 GM |
4350 | || WINDOW_WANTS_MODELINE_P (w)) |
4351 | --ht; | |
7ab12479 | 4352 | |
e9c195b1 GM |
4353 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4354 | --ht; | |
4355 | } | |
7ab12479 JB |
4356 | |
4357 | return ht; | |
4358 | } | |
5500c422 GM |
4359 | \f |
4360 | /************************************************************************ | |
4361 | Window Scrolling | |
4362 | ***********************************************************************/ | |
535e0b8e | 4363 | |
5500c422 | 4364 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4365 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4366 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4367 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4368 | means don't signal an error if we try to move over BEGV or ZV, | |
4369 | respectively. */ | |
7ab12479 | 4370 | |
101d1605 | 4371 | static void |
d311d28c | 4372 | window_scroll (Lisp_Object window, EMACS_INT n, int whole, int noerror) |
5500c422 | 4373 | { |
cba59f77 | 4374 | immediate_quit = 1; |
d311d28c | 4375 | n = clip_to_bounds (INT_MIN, n, INT_MAX); |
cba59f77 | 4376 | |
5500c422 GM |
4377 | /* If we must, use the pixel-based version which is much slower than |
4378 | the line-based one but can handle varying line heights. */ | |
d3d50620 | 4379 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) |
5500c422 GM |
4380 | window_scroll_pixel_based (window, n, whole, noerror); |
4381 | else | |
4382 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4383 | |
4384 | immediate_quit = 0; | |
5500c422 GM |
4385 | } |
4386 | ||
4387 | ||
4388 | /* Implementation of window_scroll that works based on pixel line | |
4389 | heights. See the comment of window_scroll for parameter | |
4390 | descriptions. */ | |
4391 | ||
4392 | static void | |
971de7fb | 4393 | window_scroll_pixel_based (Lisp_Object window, int n, int whole, int noerror) |
5500c422 GM |
4394 | { |
4395 | struct it it; | |
4396 | struct window *w = XWINDOW (window); | |
4397 | struct text_pos start; | |
5500c422 | 4398 | int this_scroll_margin; |
9d14503e | 4399 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5cdb3cf3 | 4400 | int vscrolled = 0; |
5a857365 | 4401 | int x, y, rtop, rbot, rowh, vpos; |
57b3e30b | 4402 | void *itdata = NULL; |
5500c422 | 4403 | |
d3d50620 | 4404 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
f0ee99a0 EZ |
4405 | /* Scrolling a minibuffer window via scroll bar when the echo area |
4406 | shows long text sometimes resets the minibuffer contents behind | |
4407 | our backs. */ | |
4408 | if (CHARPOS (start) > ZV) | |
4409 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
177c0ea7 | 4410 | |
5500c422 | 4411 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4412 | the screen. Allow PT to be partially visible, otherwise |
4413 | something like (scroll-down 1) with PT in the line before | |
4414 | the partially visible one would recenter. */ | |
5a857365 KS |
4415 | |
4416 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 | 4417 | { |
57b3e30b | 4418 | itdata = bidi_shelve_cache (); |
5500c422 GM |
4419 | /* Move backward half the height of the window. Performance note: |
4420 | vmotion used here is about 10% faster, but would give wrong | |
4421 | results for variable height lines. */ | |
4422 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4423 | it.current_y = it.last_visible_y; | |
f204989e | 4424 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4425 | |
5500c422 GM |
4426 | /* The function move_iterator_vertically may move over more than |
4427 | the specified y-distance. If it->w is small, e.g. a | |
4428 | mini-buffer window, we may end up in front of the window's | |
4429 | display area. This is the case when Start displaying at the | |
4430 | start of the line containing PT in this case. */ | |
4431 | if (it.current_y <= 0) | |
4432 | { | |
4433 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4434 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4435 | it.current_y = 0; |
4436 | } | |
4437 | ||
4438 | start = it.current.pos; | |
35928349 | 4439 | bidi_unshelve_cache (itdata, 0); |
5500c422 | 4440 | } |
e56263e5 KS |
4441 | else if (auto_window_vscroll_p) |
4442 | { | |
5a857365 | 4443 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
4444 | { |
4445 | int px; | |
4446 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4447 | if (whole) | |
e856c216 KS |
4448 | dy = max ((window_box_height (w) |
4449 | - next_screen_context_lines * dy), | |
4450 | dy); | |
e56263e5 KS |
4451 | dy *= n; |
4452 | ||
5a857365 | 4453 | if (n < 0) |
e56263e5 | 4454 | { |
5a857365 KS |
4455 | /* Only vscroll backwards if already vscrolled forwards. */ |
4456 | if (w->vscroll < 0 && rtop > 0) | |
4457 | { | |
4458 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
4459 | Fset_window_vscroll (window, make_number (px), Qt); | |
4460 | return; | |
4461 | } | |
e56263e5 | 4462 | } |
5a857365 | 4463 | if (n > 0) |
e56263e5 | 4464 | { |
5a857365 KS |
4465 | /* Do vscroll if already vscrolled or only display line. */ |
4466 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
4467 | { | |
4468 | px = max (0, -w->vscroll + min (rbot, dy)); | |
4469 | Fset_window_vscroll (window, make_number (px), Qt); | |
4470 | return; | |
4471 | } | |
4472 | ||
4473 | /* Maybe modify window start instead of scrolling. */ | |
4474 | if (rbot > 0 || w->vscroll < 0) | |
4475 | { | |
d311d28c | 4476 | ptrdiff_t spos; |
5a857365 KS |
4477 | |
4478 | Fset_window_vscroll (window, make_number (0), Qt); | |
4479 | /* If there are other text lines above the current row, | |
4480 | move window start to current row. Else to next row. */ | |
4481 | if (rbot > 0) | |
4482 | spos = XINT (Fline_beginning_position (Qnil)); | |
4483 | else | |
4484 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
d3d50620 DA |
4485 | set_marker_restricted (w->start, make_number (spos), |
4486 | w->buffer); | |
c98ff5dd DA |
4487 | w->start_at_line_beg = 1; |
4488 | w->update_mode_line = 1; | |
80b00b08 DA |
4489 | w->last_modified = 0; |
4490 | w->last_overlay_modified = 0; | |
5a857365 KS |
4491 | /* Set force_start so that redisplay_window will run the |
4492 | window-scroll-functions. */ | |
c98ff5dd | 4493 | w->force_start = 1; |
5a857365 KS |
4494 | return; |
4495 | } | |
e56263e5 KS |
4496 | } |
4497 | } | |
5a857365 | 4498 | /* Cancel previous vscroll. */ |
e56263e5 KS |
4499 | Fset_window_vscroll (window, make_number (0), Qt); |
4500 | } | |
5500c422 | 4501 | |
57b3e30b | 4502 | itdata = bidi_shelve_cache (); |
d0c38d63 | 4503 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
4504 | point in the same window line as it is now, so get that line. */ |
4505 | if (!NILP (Vscroll_preserve_screen_position)) | |
4506 | { | |
c525d842 | 4507 | /* We preserve the goal pixel coordinate across consecutive |
a4b000fb JL |
4508 | calls to scroll-up, scroll-down and other commands that |
4509 | have the `scroll-command' property. This avoids the | |
c525d842 CY |
4510 | possibility of point becoming "stuck" on a tall line when |
4511 | scrolling by one line. */ | |
66fe93d1 | 4512 | if (window_scroll_pixel_based_preserve_y < 0 |
1344aad4 TT |
4513 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4514 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c525d842 CY |
4515 | { |
4516 | start_display (&it, w, start); | |
4517 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 4518 | window_scroll_pixel_based_preserve_y = it.current_y; |
c876b227 | 4519 | window_scroll_pixel_based_preserve_x = it.current_x; |
c525d842 | 4520 | } |
5500c422 GM |
4521 | } |
4522 | else | |
c876b227 SM |
4523 | window_scroll_pixel_based_preserve_y |
4524 | = window_scroll_pixel_based_preserve_x = -1; | |
5500c422 GM |
4525 | |
4526 | /* Move iterator it from start the specified distance forward or | |
4527 | backward. The result is the new window start. */ | |
4528 | start_display (&it, w, start); | |
4529 | if (whole) | |
4530 | { | |
d311d28c | 4531 | ptrdiff_t start_pos = IT_CHARPOS (it); |
e856c216 KS |
4532 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); |
4533 | dy = max ((window_box_height (w) | |
4534 | - next_screen_context_lines * dy), | |
4535 | dy) * n; | |
d72340d4 GM |
4536 | |
4537 | /* Note that move_it_vertically always moves the iterator to the | |
4538 | start of a line. So, if the last line doesn't have a newline, | |
4539 | we would end up at the start of the line ending at ZV. */ | |
4540 | if (dy <= 0) | |
e856c216 KS |
4541 | { |
4542 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 4543 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
4544 | looking at an image that is taller that the window height. */ |
4545 | while (start_pos == IT_CHARPOS (it) | |
4546 | && start_pos > BEGV) | |
e4cc2dfc | 4547 | move_it_by_lines (&it, -1); |
e856c216 | 4548 | } |
d72340d4 | 4549 | else if (dy > 0) |
bed83ee4 | 4550 | { |
bed83ee4 KS |
4551 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
4552 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 4553 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
4554 | looking at an image that is taller that the window height. */ |
4555 | while (start_pos == IT_CHARPOS (it) | |
4556 | && start_pos < ZV) | |
e4cc2dfc | 4557 | move_it_by_lines (&it, 1); |
bed83ee4 | 4558 | } |
5500c422 GM |
4559 | } |
4560 | else | |
e4cc2dfc | 4561 | move_it_by_lines (&it, n); |
5500c422 | 4562 | |
96ae58c8 RS |
4563 | /* We failed if we find ZV is already on the screen (scrolling up, |
4564 | means there's nothing past the end), or if we can't start any | |
4565 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 4566 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 4567 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 4568 | { |
5cdb3cf3 MB |
4569 | if (IT_CHARPOS (it) == ZV) |
4570 | { | |
07ce8b53 RS |
4571 | if (it.current_y < it.last_visible_y |
4572 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 4573 | > it.last_visible_y)) |
a74eca50 GM |
4574 | { |
4575 | /* The last line was only partially visible, make it fully | |
4576 | visible. */ | |
4577 | w->vscroll = (it.last_visible_y | |
4578 | - it.current_y + it.max_ascent + it.max_descent); | |
4579 | adjust_glyphs (it.f); | |
4580 | } | |
5cdb3cf3 | 4581 | else |
57b3e30b | 4582 | { |
35928349 | 4583 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
4584 | if (noerror) |
4585 | return; | |
4586 | else if (n < 0) /* could happen with empty buffers */ | |
4587 | xsignal0 (Qbeginning_of_buffer); | |
4588 | else | |
4589 | xsignal0 (Qend_of_buffer); | |
4590 | } | |
5cdb3cf3 | 4591 | } |
5500c422 | 4592 | else |
5cdb3cf3 MB |
4593 | { |
4594 | if (w->vscroll != 0) | |
4595 | /* The first line was only partially visible, make it fully | |
4596 | visible. */ | |
4597 | w->vscroll = 0; | |
5cdb3cf3 | 4598 | else |
57b3e30b | 4599 | { |
35928349 | 4600 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
4601 | if (noerror) |
4602 | return; | |
4603 | else | |
4604 | xsignal0 (Qbeginning_of_buffer); | |
4605 | } | |
5cdb3cf3 MB |
4606 | } |
4607 | ||
4608 | /* If control gets here, then we vscrolled. */ | |
4609 | ||
d3d50620 | 4610 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
5cdb3cf3 MB |
4611 | |
4612 | /* Don't try to change the window start below. */ | |
4613 | vscrolled = 1; | |
5500c422 GM |
4614 | } |
4615 | ||
5cdb3cf3 MB |
4616 | if (! vscrolled) |
4617 | { | |
d311d28c PE |
4618 | ptrdiff_t pos = IT_CHARPOS (it); |
4619 | ptrdiff_t bytepos; | |
e68def1e AS |
4620 | |
4621 | /* If in the middle of a multi-glyph character move forward to | |
4622 | the next character. */ | |
4623 | if (in_display_vector_p (&it)) | |
4624 | { | |
4625 | ++pos; | |
4626 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
4627 | } | |
4628 | ||
5cdb3cf3 | 4629 | /* Set the window start, and set up the window for redisplay. */ |
d3d50620 DA |
4630 | set_marker_restricted (w->start, make_number (pos), |
4631 | w->buffer); | |
4c1acb95 | 4632 | bytepos = marker_byte_position (w->start); |
c98ff5dd DA |
4633 | w->start_at_line_beg = (pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n'); |
4634 | w->update_mode_line = 1; | |
80b00b08 DA |
4635 | w->last_modified = 0; |
4636 | w->last_overlay_modified = 0; | |
5cdb3cf3 MB |
4637 | /* Set force_start so that redisplay_window will run the |
4638 | window-scroll-functions. */ | |
c98ff5dd | 4639 | w->force_start = 1; |
5cdb3cf3 | 4640 | } |
177c0ea7 | 4641 | |
dc297565 RS |
4642 | /* The rest of this function uses current_y in a nonstandard way, |
4643 | not including the height of the header line if any. */ | |
5500c422 | 4644 | it.current_y = it.vpos = 0; |
177c0ea7 | 4645 | |
940f53e5 RS |
4646 | /* Move PT out of scroll margins. |
4647 | This code wants current_y to be zero at the window start position | |
4648 | even if there is a header line. */ | |
4649 | this_scroll_margin = max (0, scroll_margin); | |
3a45383a | 4650 | this_scroll_margin |
d3d50620 | 4651 | = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); |
940f53e5 RS |
4652 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); |
4653 | ||
4654 | if (n > 0) | |
5500c422 | 4655 | { |
940f53e5 RS |
4656 | /* We moved the window start towards ZV, so PT may be now |
4657 | in the scroll margin at the top. */ | |
4658 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
4659 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
4660 | && (NILP (Vscroll_preserve_screen_position) | |
4661 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4662 | /* We found PT at a legitimate height. Leave it alone. */ |
4663 | ; | |
66fe93d1 | 4664 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4665 | { |
fa3c3426 RS |
4666 | /* If we have a header line, take account of it. |
4667 | This is necessary because we set it.current_y to 0, above. */ | |
c876b227 SM |
4668 | move_it_to (&it, -1, |
4669 | window_scroll_pixel_based_preserve_x, | |
66fe93d1 LT |
4670 | window_scroll_pixel_based_preserve_y |
4671 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c876b227 | 4672 | -1, MOVE_TO_Y | MOVE_TO_X); |
940f53e5 RS |
4673 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4674 | } | |
4675 | else | |
5500c422 | 4676 | { |
5500c422 | 4677 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
4678 | { |
4679 | int prev = it.current_y; | |
e4cc2dfc | 4680 | move_it_by_lines (&it, 1); |
e9b2c961 RS |
4681 | if (prev == it.current_y) |
4682 | break; | |
4683 | } | |
5500c422 GM |
4684 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4685 | } | |
940f53e5 RS |
4686 | } |
4687 | else if (n < 0) | |
4688 | { | |
d311d28c | 4689 | ptrdiff_t charpos, bytepos; |
aed328bf | 4690 | int partial_p; |
940f53e5 | 4691 | |
66fe93d1 LT |
4692 | /* Save our position, for the |
4693 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
4694 | charpos = IT_CHARPOS (it); |
4695 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 4696 | |
940f53e5 RS |
4697 | /* We moved the window start towards BEGV, so PT may be now |
4698 | in the scroll margin at the bottom. */ | |
4699 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
4700 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
4701 | - this_scroll_margin - 1), | |
4702 | -1, | |
940f53e5 RS |
4703 | MOVE_TO_POS | MOVE_TO_Y); |
4704 | ||
aed328bf KS |
4705 | /* Save our position, in case it's correct. */ |
4706 | charpos = IT_CHARPOS (it); | |
4707 | bytepos = IT_BYTEPOS (it); | |
4708 | ||
4709 | /* See if point is on a partially visible line at the end. */ | |
4710 | if (it.what == IT_EOB) | |
4711 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
4712 | else | |
4713 | { | |
e4cc2dfc | 4714 | move_it_by_lines (&it, 1); |
aed328bf KS |
4715 | partial_p = it.current_y > it.last_visible_y; |
4716 | } | |
4717 | ||
bdf4ec93 RS |
4718 | if (charpos == PT && !partial_p |
4719 | && (NILP (Vscroll_preserve_screen_position) | |
4720 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4721 | /* We found PT before we found the display margin, so PT is ok. */ |
4722 | ; | |
66fe93d1 | 4723 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4724 | { |
d3d50620 | 4725 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
940f53e5 | 4726 | start_display (&it, w, start); |
c525d842 CY |
4727 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
4728 | here because we called start_display again and did not | |
4729 | alter it.current_y this time. */ | |
c876b227 SM |
4730 | move_it_to (&it, -1, window_scroll_pixel_based_preserve_x, |
4731 | window_scroll_pixel_based_preserve_y, -1, | |
4732 | MOVE_TO_Y | MOVE_TO_X); | |
940f53e5 RS |
4733 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4734 | } | |
4735 | else | |
4736 | { | |
aed328bf | 4737 | if (partial_p) |
5cdb3cf3 MB |
4738 | /* The last line was only partially visible, so back up two |
4739 | lines to make sure we're on a fully visible line. */ | |
4740 | { | |
e4cc2dfc | 4741 | move_it_by_lines (&it, -2); |
5cdb3cf3 MB |
4742 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4743 | } | |
4744 | else | |
4745 | /* No, the position we saved is OK, so use it. */ | |
4746 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
4747 | } |
4748 | } | |
35928349 | 4749 | bidi_unshelve_cache (itdata, 0); |
5500c422 GM |
4750 | } |
4751 | ||
4752 | ||
4753 | /* Implementation of window_scroll that works based on screen lines. | |
4754 | See the comment of window_scroll for parameter descriptions. */ | |
4755 | ||
4756 | static void | |
971de7fb | 4757 | window_scroll_line_based (Lisp_Object window, int n, int whole, int noerror) |
7ab12479 JB |
4758 | { |
4759 | register struct window *w = XWINDOW (window); | |
03ab8921 EZ |
4760 | /* Fvertical_motion enters redisplay, which can trigger |
4761 | fontification, which in turn can modify buffer text (e.g., if the | |
4762 | fontification functions replace escape sequences with faces, as | |
4763 | in `grep-mode-font-lock-keywords'). So we use a marker to record | |
4764 | the old point position, to prevent crashes in SET_PT_BOTH. */ | |
4765 | Lisp_Object opoint_marker = Fpoint_marker (); | |
d311d28c | 4766 | register ptrdiff_t pos, pos_byte; |
7ab12479 JB |
4767 | register int ht = window_internal_height (w); |
4768 | register Lisp_Object tem; | |
4769 | int lose; | |
5500c422 | 4770 | Lisp_Object bolp; |
d311d28c | 4771 | ptrdiff_t startpos; |
c876b227 | 4772 | Lisp_Object original_pos = Qnil; |
101d1605 | 4773 | |
d4e7cf01 GM |
4774 | /* If scrolling screen-fulls, compute the number of lines to |
4775 | scroll from the window's height. */ | |
4776 | if (whole) | |
4777 | n *= max (1, ht - next_screen_context_lines); | |
4778 | ||
d3d50620 | 4779 | startpos = marker_position (w->start); |
101d1605 | 4780 | |
c876b227 SM |
4781 | if (!NILP (Vscroll_preserve_screen_position)) |
4782 | { | |
4783 | if (window_scroll_preserve_vpos <= 0 | |
1344aad4 TT |
4784 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4785 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c876b227 SM |
4786 | { |
4787 | struct position posit | |
4788 | = *compute_motion (startpos, 0, 0, 0, | |
4789 | PT, ht, 0, | |
80b00b08 | 4790 | -1, w->hscroll, |
c876b227 SM |
4791 | 0, w); |
4792 | window_scroll_preserve_vpos = posit.vpos; | |
80b00b08 | 4793 | window_scroll_preserve_hpos = posit.hpos + w->hscroll; |
c876b227 SM |
4794 | } |
4795 | ||
4796 | original_pos = Fcons (make_number (window_scroll_preserve_hpos), | |
4797 | make_number (window_scroll_preserve_vpos)); | |
4798 | } | |
0a1f771a | 4799 | |
d834a2e9 | 4800 | XSETFASTINT (tem, PT); |
6ffdb539 | 4801 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 4802 | |
265a9e55 | 4803 | if (NILP (tem)) |
7ab12479 | 4804 | { |
cd2be1dd | 4805 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 4806 | startpos = PT; |
7ab12479 JB |
4807 | } |
4808 | ||
345d45b2 | 4809 | SET_PT (startpos); |
5ce7b543 | 4810 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 4811 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 4812 | pos = PT; |
b73ea88e | 4813 | pos_byte = PT_BYTE; |
7ab12479 | 4814 | bolp = Fbolp (); |
03ab8921 EZ |
4815 | SET_PT_BOTH (marker_position (opoint_marker), |
4816 | marker_byte_position (opoint_marker)); | |
7ab12479 JB |
4817 | |
4818 | if (lose) | |
f8026fd8 JB |
4819 | { |
4820 | if (noerror) | |
4821 | return; | |
4822 | else | |
ba96a5cf | 4823 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 4824 | } |
7ab12479 JB |
4825 | |
4826 | if (pos < ZV) | |
7ab12479 | 4827 | { |
0c7da84e | 4828 | /* Don't use a scroll margin that is negative or too large. */ |
71f02bc5 | 4829 | int this_scroll_margin = |
d3d50620 | 4830 | max (0, min (scroll_margin, XINT (w->total_lines) / 4)); |
0c7da84e | 4831 | |
d3d50620 | 4832 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
c98ff5dd DA |
4833 | w->start_at_line_beg = !NILP (bolp); |
4834 | w->update_mode_line = 1; | |
80b00b08 DA |
4835 | w->last_modified = 0; |
4836 | w->last_overlay_modified = 0; | |
345d45b2 RS |
4837 | /* Set force_start so that redisplay_window will run |
4838 | the window-scroll-functions. */ | |
c98ff5dd | 4839 | w->force_start = 1; |
0c7da84e | 4840 | |
bdf4ec93 RS |
4841 | if (!NILP (Vscroll_preserve_screen_position) |
4842 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 4843 | { |
b73ea88e | 4844 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4845 | Fvertical_motion (original_pos, window); |
0c7da84e | 4846 | } |
101d1605 RS |
4847 | /* If we scrolled forward, put point enough lines down |
4848 | that it is outside the scroll margin. */ | |
4849 | else if (n > 0) | |
0c7da84e | 4850 | { |
101d1605 RS |
4851 | int top_margin; |
4852 | ||
4853 | if (this_scroll_margin > 0) | |
4854 | { | |
b73ea88e | 4855 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4856 | Fvertical_motion (make_number (this_scroll_margin), window); |
4857 | top_margin = PT; | |
4858 | } | |
4859 | else | |
4860 | top_margin = pos; | |
4861 | ||
03ab8921 EZ |
4862 | if (top_margin <= marker_position (opoint_marker)) |
4863 | SET_PT_BOTH (marker_position (opoint_marker), | |
4864 | marker_byte_position (opoint_marker)); | |
5500c422 | 4865 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 4866 | { |
b73ea88e | 4867 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4868 | Fvertical_motion (original_pos, window); |
101d1605 | 4869 | } |
9317a85d | 4870 | else |
335406fc | 4871 | SET_PT (top_margin); |
0c7da84e | 4872 | } |
101d1605 | 4873 | else if (n < 0) |
7ab12479 | 4874 | { |
101d1605 RS |
4875 | int bottom_margin; |
4876 | ||
0c7da84e RS |
4877 | /* If we scrolled backward, put point near the end of the window |
4878 | but not within the scroll margin. */ | |
b73ea88e | 4879 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 4880 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
4881 | if (XFASTINT (tem) == ht - this_scroll_margin) |
4882 | bottom_margin = PT; | |
4883 | else | |
4884 | bottom_margin = PT + 1; | |
4885 | ||
03ab8921 EZ |
4886 | if (bottom_margin > marker_position (opoint_marker)) |
4887 | SET_PT_BOTH (marker_position (opoint_marker), | |
4888 | marker_byte_position (opoint_marker)); | |
7ab12479 | 4889 | else |
101d1605 | 4890 | { |
5500c422 | 4891 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 4892 | { |
b73ea88e | 4893 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4894 | Fvertical_motion (original_pos, window); |
9317a85d RS |
4895 | } |
4896 | else | |
4897 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 4898 | } |
7ab12479 JB |
4899 | } |
4900 | } | |
4901 | else | |
f8026fd8 JB |
4902 | { |
4903 | if (noerror) | |
4904 | return; | |
4905 | else | |
ba96a5cf | 4906 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 4907 | } |
7ab12479 | 4908 | } |
5500c422 GM |
4909 | |
4910 | ||
4911 | /* Scroll selected_window up or down. If N is nil, scroll a | |
4912 | screen-full which is defined as the height of the window minus | |
4913 | next_screen_context_lines. If N is the symbol `-', scroll. | |
4914 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
4915 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
4916 | |
4917 | static void | |
971de7fb | 4918 | scroll_command (Lisp_Object n, int direction) |
7ab12479 | 4919 | { |
d311d28c | 4920 | ptrdiff_t count = SPECPDL_INDEX (); |
7ab12479 | 4921 | |
a54e2c05 | 4922 | eassert (eabs (direction) == 1); |
5500c422 GM |
4923 | |
4924 | /* If selected window's buffer isn't current, make it current for | |
4925 | the moment. But don't screw up if window_scroll gets an error. */ | |
d3d50620 | 4926 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
4927 | { |
4928 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
d3d50620 | 4929 | Fset_buffer (XWINDOW (selected_window)->buffer); |
5500c422 GM |
4930 | |
4931 | /* Make redisplay consider other windows than just selected_window. */ | |
4932 | ++windows_or_buffers_changed; | |
95605e15 | 4933 | } |
7ab12479 | 4934 | |
265a9e55 | 4935 | if (NILP (n)) |
d4e7cf01 | 4936 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 4937 | else if (EQ (n, Qminus)) |
d4e7cf01 | 4938 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
4939 | else |
4940 | { | |
4941 | n = Fprefix_numeric_value (n); | |
101d1605 | 4942 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 4943 | } |
95605e15 JB |
4944 | |
4945 | unbind_to (count, Qnil); | |
7ab12479 JB |
4946 | } |
4947 | ||
e0965597 | 4948 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
12bb3111 | 4949 | doc: /* Scroll text of selected window upward ARG lines. |
a0a37a6f | 4950 | If ARG is omitted or nil, scroll upward by a near full screen. |
fdb82f93 PJ |
4951 | A near full screen is `next-screen-context-lines' less than a full screen. |
4952 | Negative ARG means scroll downward. | |
4953 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4954 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4955 | (Lisp_Object arg) |
7ab12479 | 4956 | { |
413430c5 | 4957 | scroll_command (arg, 1); |
7ab12479 JB |
4958 | return Qnil; |
4959 | } | |
4960 | ||
e0965597 | 4961 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
12bb3111 | 4962 | doc: /* Scroll text of selected window down ARG lines. |
a0a37a6f | 4963 | If ARG is omitted or nil, scroll down by a near full screen. |
fdb82f93 PJ |
4964 | A near full screen is `next-screen-context-lines' less than a full screen. |
4965 | Negative ARG means scroll upward. | |
4966 | If ARG is the atom `-', scroll upward by nearly full screen. | |
4967 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4968 | (Lisp_Object arg) |
7ab12479 | 4969 | { |
413430c5 | 4970 | scroll_command (arg, -1); |
7ab12479 JB |
4971 | return Qnil; |
4972 | } | |
ccd0664b RS |
4973 | \f |
4974 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 4975 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 4976 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
4977 | showing that buffer is used. |
4978 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4979 | specifies the window. This takes precedence over | |
4980 | `other-window-scroll-buffer'. */) | |
5842a27b | 4981 | (void) |
7ab12479 | 4982 | { |
ccd0664b | 4983 | Lisp_Object window; |
7ab12479 JB |
4984 | |
4985 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 4986 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
4987 | window = Vminibuf_scroll_window; |
4988 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 4989 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
4990 | { |
4991 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 4992 | if (NILP (window)) |
87478b52 | 4993 | window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
4994 | } |
4995 | else | |
dbc4e1c1 JB |
4996 | { |
4997 | /* Nothing specified; look for a neighboring window on the same | |
4998 | frame. */ | |
4999 | window = Fnext_window (selected_window, Qnil, Qnil); | |
5000 | ||
5001 | if (EQ (window, selected_window)) | |
5002 | /* That didn't get us anywhere; look for a window on another | |
5003 | visible frame. */ | |
5004 | do | |
5005 | window = Fnext_window (window, Qnil, Qt); | |
5006 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
5007 | && ! EQ (window, selected_window)); | |
5008 | } | |
5009 | ||
b7826503 | 5010 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
5011 | |
5012 | if (EQ (window, selected_window)) | |
5013 | error ("There is no other window"); | |
5014 | ||
ccd0664b RS |
5015 | return window; |
5016 | } | |
5017 | ||
5018 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
5019 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
5020 | A near full screen is `next-screen-context-lines' less than a full screen. | |
5021 | The next window is the one below the current one; or the one at the top | |
5022 | if the current one is at the bottom. Negative ARG means scroll downward. | |
5023 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5024 | When calling from a program, supply as argument a number, nil, or `-'. | |
5025 | ||
fdb82f93 | 5026 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5027 | showing that buffer, popping the buffer up if necessary. |
5028 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5029 | specifies the window to scroll. This takes precedence over | |
5030 | `other-window-scroll-buffer'. */) | |
5842a27b | 5031 | (Lisp_Object arg) |
ccd0664b | 5032 | { |
d4e7cf01 GM |
5033 | Lisp_Object window; |
5034 | struct window *w; | |
d311d28c | 5035 | ptrdiff_t count = SPECPDL_INDEX (); |
ccd0664b RS |
5036 | |
5037 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5038 | w = XWINDOW (window); |
7ab12479 JB |
5039 | |
5040 | /* Don't screw up if window_scroll gets an error. */ | |
5041 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5042 | ++windows_or_buffers_changed; |
7ab12479 | 5043 | |
d3d50620 DA |
5044 | Fset_buffer (w->buffer); |
5045 | SET_PT (marker_position (w->pointm)); | |
7ab12479 | 5046 | |
413430c5 | 5047 | if (NILP (arg)) |
d4e7cf01 | 5048 | window_scroll (window, 1, 1, 1); |
413430c5 | 5049 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5050 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5051 | else |
5052 | { | |
413430c5 | 5053 | if (CONSP (arg)) |
7d7bbefd | 5054 | arg = XCAR (arg); |
b7826503 | 5055 | CHECK_NUMBER (arg); |
101d1605 | 5056 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5057 | } |
5058 | ||
d3d50620 | 5059 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5060 | unbind_to (count, Qnil); |
7ab12479 JB |
5061 | |
5062 | return Qnil; | |
5063 | } | |
5064 | \f | |
e0965597 | 5065 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 5066 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5067 | Default for ARG is window width minus 2. |
5068 | Value is the total amount of leftward horizontal scrolling in | |
5069 | effect after the change. | |
23fe745a | 5070 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5071 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5072 | will not scroll a window to a column less than the value returned |
dc297565 | 5073 | by this function. This happens in an interactive call. */) |
5842a27b | 5074 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 5075 | { |
c67fa410 | 5076 | struct window *w = XWINDOW (selected_window); |
aa754e6a PE |
5077 | EMACS_INT requested_arg = (NILP (arg) |
5078 | ? window_body_cols (w) - 2 | |
5079 | : XINT (Fprefix_numeric_value (arg))); | |
24a212eb | 5080 | Lisp_Object result = set_window_hscroll (w, w->hscroll + requested_arg); |
c67fa410 | 5081 | |
dc297565 | 5082 | if (!NILP (set_minimum)) |
c67fa410 GM |
5083 | w->min_hscroll = w->hscroll; |
5084 | ||
5085 | return result; | |
7ab12479 JB |
5086 | } |
5087 | ||
e0965597 | 5088 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 5089 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5090 | Default for ARG is window width minus 2. |
5091 | Value is the total amount of leftward horizontal scrolling in | |
5092 | effect after the change. | |
23fe745a | 5093 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5094 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5095 | will not scroll a window to a column less than the value returned |
dc297565 | 5096 | by this function. This happens in an interactive call. */) |
5842a27b | 5097 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 5098 | { |
c67fa410 | 5099 | struct window *w = XWINDOW (selected_window); |
aa754e6a PE |
5100 | EMACS_INT requested_arg = (NILP (arg) |
5101 | ? window_body_cols (w) - 2 | |
5102 | : XINT (Fprefix_numeric_value (arg))); | |
24a212eb | 5103 | Lisp_Object result = set_window_hscroll (w, w->hscroll - requested_arg); |
177c0ea7 | 5104 | |
dc297565 | 5105 | if (!NILP (set_minimum)) |
c67fa410 GM |
5106 | w->min_hscroll = w->hscroll; |
5107 | ||
5108 | return result; | |
7ab12479 JB |
5109 | } |
5110 | ||
fa832261 KS |
5111 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5112 | doc: /* Return the window which was selected when entering the minibuffer. | |
12bb3111 | 5113 | Returns nil, if selected window is not a minibuffer window. */) |
5842a27b | 5114 | (void) |
fa832261 KS |
5115 | { |
5116 | if (minibuf_level > 0 | |
5117 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5118 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5119 | return minibuf_selected_window; | |
5120 | ||
5121 | return Qnil; | |
5122 | } | |
5123 | ||
12c8b416 GM |
5124 | /* Value is the number of lines actually displayed in window W, |
5125 | as opposed to its height. */ | |
5126 | ||
5127 | static int | |
971de7fb | 5128 | displayed_window_lines (struct window *w) |
12c8b416 GM |
5129 | { |
5130 | struct it it; | |
5131 | struct text_pos start; | |
4c1acb95 | 5132 | ptrdiff_t charpos = marker_position (w->start); |
12c8b416 GM |
5133 | int height = window_box_height (w); |
5134 | struct buffer *old_buffer; | |
5135 | int bottom_y; | |
57b3e30b | 5136 | void *itdata = NULL; |
12c8b416 | 5137 | |
d3d50620 | 5138 | if (XBUFFER (w->buffer) != current_buffer) |
12c8b416 GM |
5139 | { |
5140 | old_buffer = current_buffer; | |
d3d50620 | 5141 | set_buffer_internal (XBUFFER (w->buffer)); |
12c8b416 GM |
5142 | } |
5143 | else | |
5144 | old_buffer = NULL; | |
5145 | ||
521b203e GM |
5146 | /* In case W->start is out of the accessible range, do something |
5147 | reasonable. This happens in Info mode when Info-scroll-down | |
5148 | calls (recenter -1) while W->start is 1. */ | |
4c1acb95 | 5149 | if (charpos < BEGV) |
521b203e | 5150 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); |
4c1acb95 | 5151 | else if (charpos > ZV) |
521b203e GM |
5152 | SET_TEXT_POS (start, ZV, ZV_BYTE); |
5153 | else | |
d3d50620 | 5154 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
521b203e | 5155 | |
57b3e30b | 5156 | itdata = bidi_shelve_cache (); |
12c8b416 GM |
5157 | start_display (&it, w, start); |
5158 | move_it_vertically (&it, height); | |
c8bc6f65 | 5159 | bottom_y = line_bottom_y (&it); |
35928349 | 5160 | bidi_unshelve_cache (itdata, 0); |
12c8b416 | 5161 | |
1de65f51 RS |
5162 | /* rms: On a non-window display, |
5163 | the value of it.vpos at the bottom of the screen | |
5164 | seems to be 1 larger than window_box_height (w). | |
5165 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5166 | when ZV is on the last screen line | |
5167 | moves to the previous screen line instead of the last one. */ | |
d3d50620 | 5168 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) |
1de65f51 RS |
5169 | height++; |
5170 | ||
12c8b416 GM |
5171 | /* Add in empty lines at the bottom of the window. */ |
5172 | if (bottom_y < height) | |
5173 | { | |
949cf20f | 5174 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5175 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5176 | } |
5177 | ||
c8bc6f65 GM |
5178 | if (old_buffer) |
5179 | set_buffer_internal (old_buffer); | |
5180 | ||
12c8b416 GM |
5181 | return it.vpos; |
5182 | } | |
5183 | ||
5184 | ||
a7ca3326 | 5185 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
666e158e | 5186 | doc: /* Center point in selected window and maybe redisplay frame. |
fdb82f93 | 5187 | With prefix argument ARG, recenter putting point on screen line ARG |
12bb3111 | 5188 | relative to the selected window. If ARG is negative, it counts up from the |
fdb82f93 PJ |
5189 | bottom of the window. (ARG should be less than the height of the window.) |
5190 | ||
666e158e MB |
5191 | If ARG is omitted or nil, then recenter with point on the middle line of |
5192 | the selected window; if the variable `recenter-redisplay' is non-nil, | |
5193 | also erase the entire frame and redraw it (when `auto-resize-tool-bars' | |
5194 | is set to `grow-only', this resets the tool-bar's height to the minimum | |
5195 | height needed); if `recenter-redisplay' has the special value `tty', | |
53524d93 | 5196 | then only tty frames are redrawn. |
7d1d98ee | 5197 | |
fdb82f93 PJ |
5198 | Just C-u as prefix means put point in the center of the window |
5199 | and redisplay normally--don't erase and redraw the frame. */) | |
5842a27b | 5200 | (register Lisp_Object arg) |
7ab12479 | 5201 | { |
6df47b59 | 5202 | struct window *w = XWINDOW (selected_window); |
d3d50620 | 5203 | struct buffer *buf = XBUFFER (w->buffer); |
478292ed | 5204 | struct buffer *obuf = current_buffer; |
6df47b59 | 5205 | int center_p = 0; |
d311d28c | 5206 | ptrdiff_t charpos, bytepos; |
71f02bc5 | 5207 | EMACS_INT iarg IF_LINT (= 0); |
f6b43440 | 5208 | int this_scroll_margin; |
7ab12479 | 5209 | |
0fa5d25b RS |
5210 | /* If redisplay is suppressed due to an error, try again. */ |
5211 | obuf->display_error_modiff = 0; | |
5212 | ||
413430c5 | 5213 | if (NILP (arg)) |
7ab12479 | 5214 | { |
666e158e MB |
5215 | if (!NILP (Vrecenter_redisplay) |
5216 | && (!EQ (Vrecenter_redisplay, Qtty) | |
5217 | || !NILP (Ftty_type (selected_frame)))) | |
5218 | { | |
ebfa62c0 | 5219 | ptrdiff_t i; |
f02d6d5c | 5220 | |
666e158e MB |
5221 | /* Invalidate pixel data calculated for all compositions. */ |
5222 | for (i = 0; i < n_compositions; i++) | |
5223 | composition_table[i]->font = NULL; | |
7ab12479 | 5224 | |
666e158e MB |
5225 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5226 | ||
5227 | Fredraw_frame (WINDOW_FRAME (w)); | |
5228 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
5229 | } | |
7d1d98ee | 5230 | |
6df47b59 | 5231 | center_p = 1; |
7ab12479 | 5232 | } |
413430c5 | 5233 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5234 | center_p = 1; |
7ab12479 JB |
5235 | else |
5236 | { | |
413430c5 | 5237 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5238 | CHECK_NUMBER (arg); |
ae12ecd7 | 5239 | iarg = XINT (arg); |
7ab12479 JB |
5240 | } |
5241 | ||
478292ed | 5242 | set_buffer_internal (buf); |
7ab12479 | 5243 | |
f6b43440 RS |
5244 | /* Do this after making BUF current |
5245 | in case scroll_margin is buffer-local. */ | |
71f02bc5 | 5246 | this_scroll_margin = |
d3d50620 | 5247 | max (0, min (scroll_margin, XFASTINT (w->total_lines) / 4)); |
f6b43440 | 5248 | |
521b203e | 5249 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5250 | have variable-height lines and centering point on the basis of |
5251 | line counts would lead to strange effects. */ | |
d3d50620 | 5252 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5253 | { |
6df47b59 GM |
5254 | if (center_p) |
5255 | { | |
521b203e GM |
5256 | struct it it; |
5257 | struct text_pos pt; | |
57b3e30b | 5258 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5259 | |
521b203e GM |
5260 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5261 | start_display (&it, w, pt); | |
f204989e | 5262 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5263 | charpos = IT_CHARPOS (it); |
5264 | bytepos = IT_BYTEPOS (it); | |
35928349 | 5265 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5266 | } |
f6b43440 | 5267 | else if (iarg < 0) |
6df47b59 | 5268 | { |
521b203e GM |
5269 | struct it it; |
5270 | struct text_pos pt; | |
5895d7b9 | 5271 | ptrdiff_t nlines = min (PTRDIFF_MAX, -iarg); |
f204989e KS |
5272 | int extra_line_spacing; |
5273 | int h = window_box_height (w); | |
57b3e30b | 5274 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5275 | |
f6b43440 RS |
5276 | iarg = - max (-iarg, this_scroll_margin); |
5277 | ||
521b203e GM |
5278 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5279 | start_display (&it, w, pt); | |
f204989e KS |
5280 | |
5281 | /* Be sure we have the exact height of the full line containing PT. */ | |
e4cc2dfc | 5282 | move_it_by_lines (&it, 0); |
521b203e | 5283 | |
d466fa4d | 5284 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5285 | height minus what's displayed in the line containing PT, |
5286 | and the lines below. */ | |
f204989e KS |
5287 | it.current_y = 0; |
5288 | it.vpos = 0; | |
e4cc2dfc | 5289 | move_it_by_lines (&it, nlines); |
d466fa4d | 5290 | |
f204989e KS |
5291 | if (it.vpos == nlines) |
5292 | h -= it.current_y; | |
5293 | else | |
5294 | { | |
5295 | /* Last line has no newline */ | |
5296 | h -= line_bottom_y (&it); | |
5297 | it.vpos++; | |
5298 | } | |
5299 | ||
5300 | /* Don't reserve space for extra line spacing of last line. */ | |
5301 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5302 | |
5303 | /* If we can't move down NLINES lines because we hit | |
5304 | the end of the buffer, count in some empty lines. */ | |
5305 | if (it.vpos < nlines) | |
f204989e KS |
5306 | { |
5307 | nlines -= it.vpos; | |
5308 | extra_line_spacing = it.extra_line_spacing; | |
5309 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5310 | } | |
5311 | if (h <= 0) | |
57b3e30b | 5312 | { |
35928349 | 5313 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
5314 | return Qnil; |
5315 | } | |
201c831a | 5316 | |
f204989e | 5317 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5318 | start_display (&it, w, pt); |
f204989e KS |
5319 | it.current_y = 0; |
5320 | move_it_vertically_backward (&it, h); | |
5321 | ||
5322 | /* If extra line spacing is present, we may move too far | |
5323 | back. This causes the last line to be only partially | |
5324 | visible (which triggers redisplay to recenter that line | |
5325 | in the middle), so move forward. | |
5326 | But ignore extra line spacing on last line, as it is not | |
5327 | considered to be part of the visible height of the line. | |
5328 | */ | |
5329 | h += extra_line_spacing; | |
5330 | while (-it.current_y > h) | |
e4cc2dfc | 5331 | move_it_by_lines (&it, 1); |
f204989e | 5332 | |
521b203e GM |
5333 | charpos = IT_CHARPOS (it); |
5334 | bytepos = IT_BYTEPOS (it); | |
57b3e30b | 5335 | |
35928349 | 5336 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5337 | } |
521b203e GM |
5338 | else |
5339 | { | |
5340 | struct position pos; | |
f6b43440 | 5341 | |
f6b43440 RS |
5342 | iarg = max (iarg, this_scroll_margin); |
5343 | ||
5344 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5345 | charpos = pos.bufpos; |
5346 | bytepos = pos.bytepos; | |
5347 | } | |
5348 | } | |
5349 | else | |
5350 | { | |
5351 | struct position pos; | |
5352 | int ht = window_internal_height (w); | |
5353 | ||
5354 | if (center_p) | |
a4429c5b | 5355 | iarg = ht / 2; |
f567c488 KS |
5356 | else if (iarg < 0) |
5357 | iarg += ht; | |
f6b43440 RS |
5358 | |
5359 | /* Don't let it get into the margin at either top or bottom. */ | |
2dd61a9b DA |
5360 | iarg = clip_to_bounds (this_scroll_margin, iarg, |
5361 | ht - this_scroll_margin - 1); | |
177c0ea7 | 5362 | |
f6b43440 | 5363 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
5364 | charpos = pos.bufpos; |
5365 | bytepos = pos.bytepos; | |
5366 | } | |
5367 | ||
5368 | /* Set the new window start. */ | |
d3d50620 | 5369 | set_marker_both (w->start, w->buffer, charpos, bytepos); |
e8c17b81 | 5370 | wset_window_end_valid (w, Qnil); |
177c0ea7 | 5371 | |
c98ff5dd | 5372 | w->optional_new_start = 1; |
95605b1b | 5373 | |
c98ff5dd DA |
5374 | w->start_at_line_beg = (bytepos == BEGV_BYTE || |
5375 | FETCH_BYTE (bytepos - 1) == '\n'); | |
177c0ea7 | 5376 | |
478292ed | 5377 | set_buffer_internal (obuf); |
7ab12479 JB |
5378 | return Qnil; |
5379 | } | |
b7617575 | 5380 | |
81fe0836 | 5381 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5382 | 0, 1, 0, |
5383 | doc: /* Return the height in lines of the text display area of WINDOW. | |
52162052 | 5384 | WINDOW must be a live window and defaults to the selected one. |
8fef9de1 | 5385 | |
105216ed CY |
5386 | The returned height does not include the mode line, any header line, |
5387 | nor any partial-height lines at the bottom of the text area. */) | |
5842a27b | 5388 | (Lisp_Object window) |
81fe0836 | 5389 | { |
52162052 | 5390 | struct window *w = decode_live_window (window); |
81fe0836 | 5391 | int pixel_height = window_box_height (w); |
d3d50620 | 5392 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5393 | return make_number (line_height); |
5394 | } | |
5395 | ||
5396 | ||
7ab12479 JB |
5397 | \f |
5398 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5399 | 1, 1, "P", |
5400 | doc: /* Position point relative to window. | |
87e68db4 JB |
5401 | ARG nil means position point at center of window. |
5402 | Else, ARG specifies vertical position within the window; | |
fdb82f93 | 5403 | zero means top of window, negative means relative to bottom of window. */) |
5842a27b | 5404 | (Lisp_Object arg) |
7ab12479 | 5405 | { |
b7617575 GM |
5406 | struct window *w = XWINDOW (selected_window); |
5407 | int lines, start; | |
540b6aa0 | 5408 | Lisp_Object window; |
f6b43440 RS |
5409 | #if 0 |
5410 | int this_scroll_margin; | |
5411 | #endif | |
7ab12479 | 5412 | |
d3d50620 DA |
5413 | if (!(BUFFERP (w->buffer) |
5414 | && XBUFFER (w->buffer) == current_buffer)) | |
794b75c7 SM |
5415 | /* This test is needed to make sure PT/PT_BYTE make sense in w->buffer |
5416 | when passed below to set_marker_both. */ | |
5417 | error ("move-to-window-line called from unrelated buffer"); | |
6dc1d2d3 | 5418 | |
b7617575 | 5419 | window = selected_window; |
d3d50620 | 5420 | start = marker_position (w->start); |
7ab12479 JB |
5421 | if (start < BEGV || start > ZV) |
5422 | { | |
b7617575 | 5423 | int height = window_internal_height (w); |
cd2be1dd | 5424 | Fvertical_motion (make_number (- (height / 2)), window); |
d3d50620 | 5425 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
c98ff5dd DA |
5426 | w->start_at_line_beg = !NILP (Fbolp ()); |
5427 | w->force_start = 1; | |
7ab12479 JB |
5428 | } |
5429 | else | |
d3d50620 | 5430 | Fgoto_char (w->start); |
7ab12479 | 5431 | |
b7617575 | 5432 | lines = displayed_window_lines (w); |
f6b43440 RS |
5433 | |
5434 | #if 0 | |
71f02bc5 | 5435 | this_scroll_margin = max (0, min (scroll_margin, lines / 4)); |
f6b43440 RS |
5436 | #endif |
5437 | ||
b7617575 GM |
5438 | if (NILP (arg)) |
5439 | XSETFASTINT (arg, lines / 2); | |
5440 | else | |
5441 | { | |
71f02bc5 | 5442 | EMACS_INT iarg = XINT (Fprefix_numeric_value (arg)); |
f6b43440 RS |
5443 | |
5444 | if (iarg < 0) | |
5445 | iarg = iarg + lines; | |
5446 | ||
5447 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5448 | to a place inside the scroll margins (which would cause the | |
5449 | next redisplay to scroll). I wrote this code, but then concluded | |
5450 | it is probably better not to install it. However, it is here | |
5451 | inside #if 0 so as not to lose it. -- rms. */ | |
5452 | ||
5453 | /* Don't let it get into the margin at either top or bottom. */ | |
5454 | iarg = max (iarg, this_scroll_margin); | |
5455 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5456 | #endif | |
5457 | ||
5458 | arg = make_number (iarg); | |
b7617575 GM |
5459 | } |
5460 | ||
c8bc6f65 | 5461 | /* Skip past a partially visible first line. */ |
163784df | 5462 | if (w->vscroll) |
163784df MB |
5463 | XSETINT (arg, XINT (arg) + 1); |
5464 | ||
540b6aa0 | 5465 | return Fvertical_motion (arg, window); |
7ab12479 | 5466 | } |
5500c422 GM |
5467 | |
5468 | ||
7ab12479 | 5469 | \f |
5500c422 GM |
5470 | /*********************************************************************** |
5471 | Window Configuration | |
5472 | ***********************************************************************/ | |
5473 | ||
7ab12479 JB |
5474 | struct save_window_data |
5475 | { | |
b102ceb1 | 5476 | struct vectorlike_header header; |
bdc727bf | 5477 | Lisp_Object selected_frame; |
7ab12479 JB |
5478 | Lisp_Object current_window; |
5479 | Lisp_Object current_buffer; | |
5480 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5481 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5482 | Lisp_Object root_window; |
bdc727bf | 5483 | Lisp_Object focus_frame; |
cbff28e8 RS |
5484 | /* A vector, each of whose elements is a struct saved_window |
5485 | for one window. */ | |
7ab12479 | 5486 | Lisp_Object saved_windows; |
b05b4e27 SM |
5487 | |
5488 | /* All fields above are traced by the GC. | |
5489 | From `fame-cols' down, the fields are ignored by the GC. */ | |
5490 | ||
5491 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
5492 | int frame_tool_bar_lines; | |
7ab12479 | 5493 | }; |
ff06df24 | 5494 | |
cbff28e8 | 5495 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 5496 | struct saved_window |
ea68264b | 5497 | { |
b102ceb1 | 5498 | struct vectorlike_header header; |
496e208e | 5499 | |
28545e04 | 5500 | Lisp_Object window, buffer, start, pointm, mark; |
949cf20f | 5501 | Lisp_Object left_col, top_line, total_cols, total_lines; |
496e208e | 5502 | Lisp_Object normal_cols, normal_lines; |
949cf20f | 5503 | Lisp_Object hscroll, min_hscroll; |
ea68264b GM |
5504 | Lisp_Object parent, prev; |
5505 | Lisp_Object start_at_line_beg; | |
5506 | Lisp_Object display_table; | |
949cf20f KS |
5507 | Lisp_Object left_margin_cols, right_margin_cols; |
5508 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
562dd5e9 | 5509 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type, dedicated; |
b6f67890 | 5510 | Lisp_Object combination_limit, window_parameters; |
ea68264b GM |
5511 | }; |
5512 | ||
7ab12479 JB |
5513 | #define SAVED_WINDOW_N(swv,n) \ |
5514 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
5515 | ||
5516 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 | 5517 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5842a27b | 5518 | (Lisp_Object object) |
7ab12479 | 5519 | { |
6ad0381c | 5520 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
5521 | } |
5522 | ||
3f8ab7bd | 5523 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 | 5524 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5842a27b | 5525 | (Lisp_Object config) |
3f8ab7bd RS |
5526 | { |
5527 | register struct save_window_data *data; | |
5528 | struct Lisp_Vector *saved_windows; | |
5529 | ||
663fbbba | 5530 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
5531 | |
5532 | data = (struct save_window_data *) XVECTOR (config); | |
5533 | saved_windows = XVECTOR (data->saved_windows); | |
d3d50620 | 5534 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
3f8ab7bd RS |
5535 | } |
5536 | ||
a7ca3326 | 5537 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
5538 | Sset_window_configuration, 1, 1, 0, |
5539 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
5540 | CONFIGURATION must be a value previously returned | |
5541 | by `current-window-configuration' (which see). | |
5542 | If CONFIGURATION was made from a frame that is now deleted, | |
5543 | only frame-independent values can be restored. In this case, | |
5544 | the return value is nil. Otherwise the value is t. */) | |
5842a27b | 5545 | (Lisp_Object configuration) |
7ab12479 | 5546 | { |
7ab12479 JB |
5547 | register struct save_window_data *data; |
5548 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 5549 | Lisp_Object new_current_buffer; |
fd482be5 | 5550 | Lisp_Object frame; |
44fa5b1e | 5551 | FRAME_PTR f; |
d311d28c | 5552 | ptrdiff_t old_point = -1; |
7ab12479 | 5553 | |
663fbbba | 5554 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 5555 | |
2f83aebe | 5556 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
5557 | saved_windows = XVECTOR (data->saved_windows); |
5558 | ||
7ab12479 | 5559 | new_current_buffer = data->current_buffer; |
e578f381 | 5560 | if (!BUFFER_LIVE_P (XBUFFER (new_current_buffer))) |
7ab12479 | 5561 | new_current_buffer = Qnil; |
72695e47 | 5562 | else |
73cadfc1 DK |
5563 | { |
5564 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
5565 | /* The code further down "preserves point" by saving here PT in |
5566 | old_point and then setting it later back into PT. When the | |
5567 | current-selected-window and the final-selected-window both show | |
5568 | the current buffer, this suffers from the problem that the | |
5569 | current PT is the window-point of the current-selected-window, | |
5570 | while the final PT is the point of the final-selected-window, so | |
5571 | this copy from one PT to the other would end up moving the | |
5572 | window-point of the final-selected-window to the window-point of | |
5573 | the current-selected-window. So we have to be careful which | |
5574 | point of the current-buffer we copy into old_point. */ | |
d3d50620 | 5575 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) |
e67a1dea | 5576 | && WINDOWP (selected_window) |
d3d50620 | 5577 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) |
e67a1dea | 5578 | && !EQ (selected_window, data->current_window)) |
4c1acb95 | 5579 | old_point = marker_position (XWINDOW (data->current_window)->pointm); |
e67a1dea SM |
5580 | else |
5581 | old_point = PT; | |
73cadfc1 | 5582 | else |
203eb0aa SM |
5583 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
5584 | point in new_current_buffer as of the last time this buffer was | |
5585 | used. This can be non-deterministic since it can be changed by | |
5586 | things like jit-lock by mere temporary selection of some random | |
5587 | window that happens to show this buffer. | |
5588 | So if possible we want this arbitrary choice of "which point" to | |
5589 | be the one from the to-be-selected-window so as to prevent this | |
5590 | window's cursor from being copied from another window. */ | |
d3d50620 | 5591 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) |
203eb0aa SM |
5592 | /* If current_window = selected_window, its point is in BUF_PT. */ |
5593 | && !EQ (selected_window, data->current_window)) | |
4c1acb95 | 5594 | old_point = marker_position (XWINDOW (data->current_window)->pointm); |
203eb0aa SM |
5595 | else |
5596 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 5597 | } |
7ab12479 | 5598 | |
d3d50620 | 5599 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
fd482be5 | 5600 | f = XFRAME (frame); |
177c0ea7 | 5601 | |
fd482be5 JB |
5602 | /* If f is a dead frame, don't bother rebuilding its window tree. |
5603 | However, there is other stuff we should still try to do below. */ | |
5604 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 5605 | { |
6198ccd0 MR |
5606 | Lisp_Object window; |
5607 | Lisp_Object dead_windows = Qnil; | |
6a6ee00d | 5608 | register Lisp_Object tem, par, pers; |
fd482be5 JB |
5609 | register struct window *w; |
5610 | register struct saved_window *p; | |
5500c422 GM |
5611 | struct window *root_window; |
5612 | struct window **leaf_windows; | |
5613 | int n_leaf_windows; | |
71f02bc5 PE |
5614 | ptrdiff_t k; |
5615 | int i, n; | |
fd482be5 JB |
5616 | |
5617 | /* If the frame has been resized since this window configuration was | |
5618 | made, we change the frame to the size specified in the | |
5619 | configuration, restore the configuration, and then resize it | |
5620 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
5621 | int previous_frame_lines = FRAME_LINES (f); |
5622 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 5623 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 5624 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 5625 | |
37b9743e MR |
5626 | /* Don't do this within the main loop below: This may call Lisp |
5627 | code and is thus potentially unsafe while input is blocked. */ | |
5628 | for (k = 0; k < saved_windows->header.size; k++) | |
5629 | { | |
5630 | p = SAVED_WINDOW_N (saved_windows, k); | |
5631 | window = p->window; | |
5632 | w = XWINDOW (window); | |
5633 | if (!NILP (w->buffer) | |
5634 | && !EQ (w->buffer, p->buffer) | |
e578f381 | 5635 | && BUFFER_LIVE_P (XBUFFER (p->buffer))) |
37b9743e MR |
5636 | /* If a window we restore gets another buffer, record the |
5637 | window's old buffer. */ | |
5638 | call1 (Qrecord_window_buffer, window); | |
5639 | } | |
5640 | ||
d2b35234 RS |
5641 | /* The mouse highlighting code could get screwed up |
5642 | if it runs during this. */ | |
4d7e6e51 | 5643 | block_input (); |
d2b35234 | 5644 | |
b05b4e27 SM |
5645 | if (data->frame_lines != previous_frame_lines |
5646 | || data->frame_cols != previous_frame_cols) | |
5647 | change_frame_size (f, data->frame_lines, | |
5648 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 5649 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 5650 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 5651 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
5652 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
5653 | make_number (0)); | |
4314246f | 5654 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 5655 | if (data->frame_tool_bar_lines |
9ea173e8 | 5656 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
5657 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
5658 | make_number (0)); | |
4314246f | 5659 | #endif |
217f2871 | 5660 | #endif |
fd482be5 | 5661 | |
a46c0153 RS |
5662 | /* "Swap out" point from the selected window's buffer |
5663 | into the window itself. (Normally the pointm of the selected | |
5664 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
5665 | restoring the window contents, and prevent it from |
5666 | being done later on when we select a new window. */ | |
d3d50620 | 5667 | if (! NILP (XWINDOW (selected_window)->buffer)) |
596ae0cf RS |
5668 | { |
5669 | w = XWINDOW (selected_window); | |
d3d50620 DA |
5670 | set_marker_both (w->pointm, |
5671 | w->buffer, | |
5672 | BUF_PT (XBUFFER (w->buffer)), | |
5673 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
596ae0cf RS |
5674 | } |
5675 | ||
fd482be5 | 5676 | windows_or_buffers_changed++; |
29aeee73 | 5677 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 5678 | |
5500c422 | 5679 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 5680 | is a serious redisplay flickering problem. What we would |
5500c422 | 5681 | really like to do is to free only those matrices not reused |
9d14503e | 5682 | below. */ |
5500c422 | 5683 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); |
38182d90 PE |
5684 | leaf_windows = alloca (count_windows (root_window) |
5685 | * sizeof *leaf_windows); | |
5500c422 GM |
5686 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); |
5687 | ||
fd482be5 JB |
5688 | /* Kludge Alert! |
5689 | Mark all windows now on frame as "deleted". | |
5690 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 5691 | |
fd482be5 JB |
5692 | Save their current buffers in their height fields, since we may |
5693 | need it later, if a buffer saved in the configuration is now | |
5694 | dead. */ | |
be7f5545 | 5695 | delete_all_child_windows (FRAME_ROOT_WINDOW (f)); |
fd482be5 | 5696 | |
eab3844f | 5697 | for (k = 0; k < saved_windows->header.size; k++) |
fd482be5 JB |
5698 | { |
5699 | p = SAVED_WINDOW_N (saved_windows, k); | |
6198ccd0 MR |
5700 | window = p->window; |
5701 | w = XWINDOW (window); | |
e8c17b81 | 5702 | wset_next (w, Qnil); |
7ab12479 | 5703 | |
fd482be5 | 5704 | if (!NILP (p->parent)) |
e8c17b81 PE |
5705 | wset_parent |
5706 | (w, SAVED_WINDOW_N (saved_windows, XFASTINT (p->parent))->window); | |
fd482be5 | 5707 | else |
e8c17b81 | 5708 | wset_parent (w, Qnil); |
7ab12479 | 5709 | |
fd482be5 | 5710 | if (!NILP (p->prev)) |
7ab12479 | 5711 | { |
e8c17b81 PE |
5712 | wset_prev |
5713 | (w, SAVED_WINDOW_N (saved_windows, XFASTINT (p->prev))->window); | |
5714 | wset_next (XWINDOW (w->prev), p->window); | |
fd482be5 JB |
5715 | } |
5716 | else | |
5717 | { | |
e8c17b81 | 5718 | wset_prev (w, Qnil); |
d3d50620 | 5719 | if (!NILP (w->parent)) |
fd482be5 | 5720 | { |
d3d50620 | 5721 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 | 5722 | { |
e8c17b81 PE |
5723 | wset_vchild (XWINDOW (w->parent), p->window); |
5724 | wset_hchild (XWINDOW (w->parent), Qnil); | |
fd482be5 JB |
5725 | } |
5726 | else | |
5727 | { | |
e8c17b81 PE |
5728 | wset_hchild (XWINDOW (w->parent), p->window); |
5729 | wset_vchild (XWINDOW (w->parent), Qnil); | |
fd482be5 JB |
5730 | } |
5731 | } | |
5732 | } | |
5733 | ||
5734 | /* If we squirreled away the buffer in the window's height, | |
5735 | restore it now. */ | |
d3d50620 | 5736 | if (BUFFERP (w->total_lines)) |
e8c17b81 PE |
5737 | wset_buffer (w, w->total_lines); |
5738 | wset_left_col (w, p->left_col); | |
5739 | wset_top_line (w, p->top_line); | |
5740 | wset_total_cols (w, p->total_cols); | |
5741 | wset_total_lines (w, p->total_lines); | |
5742 | wset_normal_cols (w, p->normal_cols); | |
5743 | wset_normal_lines (w, p->normal_lines); | |
80b00b08 DA |
5744 | w->hscroll = XFASTINT (p->hscroll); |
5745 | w->min_hscroll = XFASTINT (p->min_hscroll); | |
e8c17b81 PE |
5746 | wset_display_table (w, p->display_table); |
5747 | wset_left_margin_cols (w, p->left_margin_cols); | |
5748 | wset_right_margin_cols (w, p->right_margin_cols); | |
5749 | wset_left_fringe_width (w, p->left_fringe_width); | |
5750 | wset_right_fringe_width (w, p->right_fringe_width); | |
2af3565e | 5751 | w->fringes_outside_margins = !NILP (p->fringes_outside_margins); |
e8c17b81 PE |
5752 | wset_scroll_bar_width (w, p->scroll_bar_width); |
5753 | wset_vertical_scroll_bar_type (w, p->vertical_scroll_bar_type); | |
5754 | wset_dedicated (w, p->dedicated); | |
5755 | wset_combination_limit (w, p->combination_limit); | |
6a6ee00d MR |
5756 | /* Restore any window parameters that have been saved. |
5757 | Parameters that have not been saved are left alone. */ | |
5758 | for (tem = p->window_parameters; CONSP (tem); tem = XCDR (tem)) | |
5759 | { | |
5760 | pers = XCAR (tem); | |
5761 | if (CONSP (pers)) | |
5762 | { | |
5763 | if (NILP (XCDR (pers))) | |
5764 | { | |
d3d50620 | 5765 | par = Fassq (XCAR (pers), w->window_parameters); |
6a6ee00d MR |
5766 | if (CONSP (par) && !NILP (XCDR (par))) |
5767 | /* Reset a parameter to nil if and only if it | |
5768 | has a non-nil association. Don't make new | |
5769 | associations. */ | |
5770 | Fsetcdr (par, Qnil); | |
5771 | } | |
5772 | else | |
5773 | /* Always restore a non-nil value. */ | |
5774 | Fset_window_parameter (window, XCAR (pers), XCDR (pers)); | |
5775 | } | |
5776 | } | |
5777 | ||
80b00b08 DA |
5778 | w->last_modified = 0; |
5779 | w->last_overlay_modified = 0; | |
fd482be5 JB |
5780 | |
5781 | /* Reinstall the saved buffer and pointers into it. */ | |
5782 | if (NILP (p->buffer)) | |
6198ccd0 | 5783 | /* An internal window. */ |
e8c17b81 | 5784 | wset_buffer (w, p->buffer); |
e578f381 | 5785 | else if (BUFFER_LIVE_P (XBUFFER (p->buffer))) |
6198ccd0 MR |
5786 | /* If saved buffer is alive, install it. */ |
5787 | { | |
e8c17b81 PE |
5788 | wset_buffer (w, p->buffer); |
5789 | w->start_at_line_beg = !NILP (p->start_at_line_beg); | |
5790 | set_marker_restricted (w->start, p->start, w->buffer); | |
5791 | set_marker_restricted (w->pointm, p->pointm, | |
5792 | w->buffer); | |
5793 | Fset_marker (BVAR (XBUFFER (w->buffer), mark), | |
5794 | p->mark, w->buffer); | |
5795 | ||
5796 | /* As documented in Fcurrent_window_configuration, don't | |
5797 | restore the location of point in the buffer which was | |
5798 | current when the window configuration was recorded. */ | |
5799 | if (!EQ (p->buffer, new_current_buffer) | |
5800 | && XBUFFER (p->buffer) == current_buffer) | |
5801 | Fgoto_char (w->pointm); | |
077288cf | 5802 | } |
d3d50620 | 5803 | else if (!NILP (w->buffer) |
e578f381 | 5804 | && BUFFER_LIVE_P (XBUFFER (w->buffer))) |
077288cf DA |
5805 | /* Keep window's old buffer; make sure the markers are |
5806 | real. */ | |
5807 | { | |
5808 | /* Set window markers at start of visible range. */ | |
d3d50620 DA |
5809 | if (XMARKER (w->start)->buffer == 0) |
5810 | set_marker_restricted (w->start, make_number (0), | |
5811 | w->buffer); | |
5812 | if (XMARKER (w->pointm)->buffer == 0) | |
f00af5b1 | 5813 | set_marker_restricted_both |
d3d50620 DA |
5814 | (w->pointm, w->buffer, |
5815 | BUF_PT (XBUFFER (w->buffer)), | |
5816 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
077288cf DA |
5817 | w->start_at_line_beg = 1; |
5818 | } | |
fd482be5 | 5819 | else |
6198ccd0 | 5820 | /* Window has no live buffer, get one. */ |
fd482be5 | 5821 | { |
6198ccd0 MR |
5822 | /* Get the buffer via other_buffer_safely in order to |
5823 | avoid showing an unimportant buffer and, if necessary, to | |
5824 | recreate *scratch* in the course (part of Juanma's bs-show | |
5825 | scenario from March 2011). */ | |
e8c17b81 | 5826 | wset_buffer (w, other_buffer_safely (Fcurrent_buffer ())); |
6198ccd0 MR |
5827 | /* This will set the markers to beginning of visible |
5828 | range. */ | |
d3d50620 DA |
5829 | set_marker_restricted (w->start, |
5830 | make_number (0), w->buffer); | |
5831 | set_marker_restricted (w->pointm, | |
5832 | make_number (0), w->buffer); | |
c98ff5dd | 5833 | w->start_at_line_beg = 1; |
d3d50620 | 5834 | if (!NILP (w->dedicated)) |
6198ccd0 MR |
5835 | /* Record this window as dead. */ |
5836 | dead_windows = Fcons (window, dead_windows); | |
5837 | /* Make sure window is no more dedicated. */ | |
e8c17b81 | 5838 | wset_dedicated (w, Qnil); |
7ab12479 JB |
5839 | } |
5840 | } | |
9ace597f | 5841 | |
f00af5b1 | 5842 | fset_root_window (f, data->root_window); |
a46c0153 RS |
5843 | /* Arrange *not* to restore point in the buffer that was |
5844 | current when the window configuration was saved. */ | |
d3d50620 DA |
5845 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
5846 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 5847 | make_number (old_point), |
d3d50620 | 5848 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 5849 | |
6198ccd0 MR |
5850 | /* In the following call to `select-window', prevent "swapping out |
5851 | point" in the old selected window using the buffer that has | |
5852 | been restored into it. We already swapped out that point from | |
5853 | that window's old buffer. */ | |
e6b84b30 | 5854 | select_window (data->current_window, Qnil, 1); |
d3d50620 | 5855 | BVAR (XBUFFER (XWINDOW (selected_window)->buffer), last_selected_window) |
396a830c | 5856 | = selected_window; |
7ab12479 | 5857 | |
db269683 | 5858 | if (NILP (data->focus_frame) |
017b2bad | 5859 | || (FRAMEP (data->focus_frame) |
db269683 JB |
5860 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
5861 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 5862 | |
fd482be5 | 5863 | /* Set the screen height to the value it had before this function. */ |
949cf20f KS |
5864 | if (previous_frame_lines != FRAME_LINES (f) |
5865 | || previous_frame_cols != FRAME_COLS (f)) | |
5866 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 5867 | 0, 0, 0); |
e3678b64 | 5868 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 5869 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
5870 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
5871 | make_number (0)); | |
4314246f | 5872 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5873 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
5874 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
5875 | make_number (0)); | |
4314246f | 5876 | #endif |
217f2871 | 5877 | #endif |
d2b35234 | 5878 | |
5500c422 | 5879 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
5880 | for (i = n = 0; i < n_leaf_windows; ++i) |
5881 | { | |
d3d50620 | 5882 | if (NILP (leaf_windows[i]->buffer)) |
c4280705 GM |
5883 | { |
5884 | /* Assert it's not reused as a combination. */ | |
d3d50620 DA |
5885 | eassert (NILP (leaf_windows[i]->hchild) |
5886 | && NILP (leaf_windows[i]->vchild)); | |
c4280705 | 5887 | free_window_matrices (leaf_windows[i]); |
c4280705 | 5888 | } |
d3d50620 | 5889 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) |
c4280705 GM |
5890 | ++n; |
5891 | } | |
177c0ea7 | 5892 | |
5500c422 | 5893 | adjust_glyphs (f); |
4d7e6e51 | 5894 | unblock_input (); |
756b6edc | 5895 | |
6198ccd0 MR |
5896 | /* Scan dead buffer windows. */ |
5897 | for (; CONSP (dead_windows); dead_windows = XCDR (dead_windows)) | |
5898 | { | |
5899 | window = XCAR (dead_windows); | |
5900 | if (WINDOW_LIVE_P (window) && !EQ (window, FRAME_ROOT_WINDOW (f))) | |
5901 | delete_deletable_window (window); | |
5902 | } | |
5903 | ||
478292ed RS |
5904 | /* Fselect_window will have made f the selected frame, so we |
5905 | reselect the proper frame here. Fhandle_switch_frame will change the | |
5906 | selected window too, but that doesn't make the call to | |
5907 | Fselect_window above totally superfluous; it still sets f's | |
5908 | selected window. */ | |
5909 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
c6932ecd | 5910 | do_switch_frame (data->selected_frame, 0, 0, Qnil); |
478292ed | 5911 | |
eeca6f6f | 5912 | run_window_configuration_change_hook (f); |
478292ed | 5913 | } |
bdc727bf JB |
5914 | |
5915 | if (!NILP (new_current_buffer)) | |
c4b6914d MR |
5916 | { |
5917 | Fset_buffer (new_current_buffer); | |
5918 | /* If the new current buffer doesn't appear in the selected | |
5919 | window, go to its old point (see bug#12208). */ | |
5920 | if (!EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) | |
5921 | Fgoto_char (make_number (old_point)); | |
5922 | } | |
bdc727bf | 5923 | |
478292ed | 5924 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 5925 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 5926 | |
3f8ab7bd | 5927 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
5928 | } |
5929 | ||
562dd5e9 | 5930 | |
be7f5545 MR |
5931 | /* Recursively delete all child windows reachable via the next, vchild, |
5932 | and hchild slots of WINDOW. */ | |
fd482be5 | 5933 | void |
be7f5545 | 5934 | delete_all_child_windows (Lisp_Object window) |
7ab12479 | 5935 | { |
fa8a67e6 MR |
5936 | register struct window *w; |
5937 | ||
5938 | w = XWINDOW (window); | |
5939 | ||
d3d50620 | 5940 | if (!NILP (w->next)) |
fa8a67e6 | 5941 | /* Delete WINDOW's siblings (we traverse postorderly). */ |
d3d50620 | 5942 | delete_all_child_windows (w->next); |
605be8af | 5943 | |
e8c17b81 PE |
5944 | /* See Fset_window_configuration for excuse. */ |
5945 | wset_total_lines (w, w->buffer); | |
605be8af | 5946 | |
d3d50620 | 5947 | if (!NILP (w->vchild)) |
fa8a67e6 | 5948 | { |
d3d50620 | 5949 | delete_all_child_windows (w->vchild); |
e8c17b81 | 5950 | wset_vchild (w, Qnil); |
fa8a67e6 | 5951 | } |
d3d50620 | 5952 | else if (!NILP (w->hchild)) |
fa8a67e6 | 5953 | { |
d3d50620 | 5954 | delete_all_child_windows (w->hchild); |
e8c17b81 | 5955 | wset_hchild (w, Qnil); |
fa8a67e6 | 5956 | } |
d3d50620 | 5957 | else if (!NILP (w->buffer)) |
fa8a67e6 MR |
5958 | { |
5959 | unshow_buffer (w); | |
d3d50620 DA |
5960 | unchain_marker (XMARKER (w->pointm)); |
5961 | unchain_marker (XMARKER (w->start)); | |
e8c17b81 | 5962 | wset_buffer (w, Qnil); |
fa8a67e6 | 5963 | } |
acf70840 GM |
5964 | |
5965 | Vwindow_list = Qnil; | |
7ab12479 JB |
5966 | } |
5967 | \f | |
5968 | static int | |
971de7fb | 5969 | count_windows (register struct window *window) |
7ab12479 JB |
5970 | { |
5971 | register int count = 1; | |
d3d50620 DA |
5972 | if (!NILP (window->next)) |
5973 | count += count_windows (XWINDOW (window->next)); | |
5974 | if (!NILP (window->vchild)) | |
5975 | count += count_windows (XWINDOW (window->vchild)); | |
5976 | if (!NILP (window->hchild)) | |
5977 | count += count_windows (XWINDOW (window->hchild)); | |
7ab12479 JB |
5978 | return count; |
5979 | } | |
5980 | ||
5500c422 | 5981 | |
177c0ea7 | 5982 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 | 5983 | Value is last index + 1. */ |
5500c422 | 5984 | static int |
971de7fb | 5985 | get_leaf_windows (struct window *w, struct window **flat, int i) |
5500c422 GM |
5986 | { |
5987 | while (w) | |
5988 | { | |
d3d50620 DA |
5989 | if (!NILP (w->hchild)) |
5990 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
5991 | else if (!NILP (w->vchild)) | |
5992 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 5993 | else |
5500c422 GM |
5994 | flat[i++] = w; |
5995 | ||
d3d50620 | 5996 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
5500c422 GM |
5997 | } |
5998 | ||
5999 | return i; | |
6000 | } | |
6001 | ||
6002 | ||
6003 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
c80e3b4a | 6004 | null if W's current matrix is invalid, so that no meaningful glyph |
5500c422 | 6005 | can be returned. */ |
5500c422 | 6006 | struct glyph * |
971de7fb | 6007 | get_phys_cursor_glyph (struct window *w) |
5500c422 GM |
6008 | { |
6009 | struct glyph_row *row; | |
6010 | struct glyph *glyph; | |
f8fe6f96 | 6011 | int hpos = w->phys_cursor.hpos; |
5500c422 | 6012 | |
f8fe6f96 EZ |
6013 | if (!(w->phys_cursor.vpos >= 0 |
6014 | && w->phys_cursor.vpos < w->current_matrix->nrows)) | |
6015 | return NULL; | |
6016 | ||
6017 | row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos); | |
6018 | if (!row->enabled_p) | |
6019 | return NULL; | |
6020 | ||
80b00b08 | 6021 | if (w->hscroll) |
f8fe6f96 EZ |
6022 | { |
6023 | /* When the window is hscrolled, cursor hpos can legitimately be | |
6024 | out of bounds, but we draw the cursor at the corresponding | |
6025 | window margin in that case. */ | |
6026 | if (!row->reversed_p && hpos < 0) | |
6027 | hpos = 0; | |
6028 | if (row->reversed_p && hpos >= row->used[TEXT_AREA]) | |
6029 | hpos = row->used[TEXT_AREA] - 1; | |
6030 | } | |
5500c422 | 6031 | |
f8fe6f96 EZ |
6032 | if (row->used[TEXT_AREA] > hpos |
6033 | && 0 <= hpos) | |
6034 | glyph = row->glyphs[TEXT_AREA] + hpos; | |
5500c422 GM |
6035 | else |
6036 | glyph = NULL; | |
6037 | ||
6038 | return glyph; | |
6039 | } | |
6040 | ||
6041 | ||
7ab12479 | 6042 | static int |
971de7fb | 6043 | save_window_save (Lisp_Object window, struct Lisp_Vector *vector, int i) |
7ab12479 JB |
6044 | { |
6045 | register struct saved_window *p; | |
6046 | register struct window *w; | |
6a6ee00d | 6047 | register Lisp_Object tem, pers, par; |
7ab12479 | 6048 | |
d3d50620 | 6049 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
6050 | { |
6051 | p = SAVED_WINDOW_N (vector, i); | |
6052 | w = XWINDOW (window); | |
6053 | ||
e8c17b81 | 6054 | wset_temslot (w, make_number (i)); i++; |
7ab12479 | 6055 | p->window = window; |
d3d50620 DA |
6056 | p->buffer = w->buffer; |
6057 | p->left_col = w->left_col; | |
6058 | p->top_line = w->top_line; | |
6059 | p->total_cols = w->total_cols; | |
6060 | p->total_lines = w->total_lines; | |
6061 | p->normal_cols = w->normal_cols; | |
6062 | p->normal_lines = w->normal_lines; | |
80b00b08 DA |
6063 | XSETFASTINT (p->hscroll, w->hscroll); |
6064 | XSETFASTINT (p->min_hscroll, w->min_hscroll); | |
d3d50620 DA |
6065 | p->display_table = w->display_table; |
6066 | p->left_margin_cols = w->left_margin_cols; | |
6067 | p->right_margin_cols = w->right_margin_cols; | |
6068 | p->left_fringe_width = w->left_fringe_width; | |
6069 | p->right_fringe_width = w->right_fringe_width; | |
2af3565e | 6070 | p->fringes_outside_margins = w->fringes_outside_margins ? Qt : Qnil; |
d3d50620 DA |
6071 | p->scroll_bar_width = w->scroll_bar_width; |
6072 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6073 | p->dedicated = w->dedicated; | |
6074 | p->combination_limit = w->combination_limit; | |
6a6ee00d MR |
6075 | p->window_parameters = Qnil; |
6076 | ||
6077 | if (!NILP (Vwindow_persistent_parameters)) | |
6078 | { | |
6079 | /* Run cycle detection on Vwindow_persistent_parameters. */ | |
6080 | Lisp_Object tortoise, hare; | |
6081 | ||
6082 | hare = tortoise = Vwindow_persistent_parameters; | |
6083 | while (CONSP (hare)) | |
6084 | { | |
6085 | hare = XCDR (hare); | |
6086 | if (!CONSP (hare)) | |
6087 | break; | |
6088 | ||
6089 | hare = XCDR (hare); | |
6090 | tortoise = XCDR (tortoise); | |
6091 | ||
6092 | if (EQ (hare, tortoise)) | |
6093 | /* Reset Vwindow_persistent_parameters to Qnil. */ | |
6094 | { | |
6095 | Vwindow_persistent_parameters = Qnil; | |
6096 | break; | |
6097 | } | |
6098 | } | |
6099 | ||
6100 | for (tem = Vwindow_persistent_parameters; CONSP (tem); | |
6101 | tem = XCDR (tem)) | |
6102 | { | |
6103 | pers = XCAR (tem); | |
34a02f46 MR |
6104 | /* Save values for persistent window parameters. */ |
6105 | if (CONSP (pers) && !NILP (XCDR (pers))) | |
6a6ee00d | 6106 | { |
d3d50620 | 6107 | par = Fassq (XCAR (pers), w->window_parameters); |
6a6ee00d MR |
6108 | if (NILP (par)) |
6109 | /* If the window has no value for the parameter, | |
6110 | make one. */ | |
6111 | p->window_parameters = Fcons (Fcons (XCAR (pers), Qnil), | |
6112 | p->window_parameters); | |
6113 | else | |
6114 | /* If the window has a value for the parameter, | |
6115 | save it. */ | |
6116 | p->window_parameters = Fcons (Fcons (XCAR (par), | |
6117 | XCDR (par)), | |
6118 | p->window_parameters); | |
6119 | } | |
6120 | } | |
6121 | } | |
6122 | ||
d3d50620 | 6123 | if (!NILP (w->buffer)) |
7ab12479 | 6124 | { |
6a6ee00d MR |
6125 | /* Save w's value of point in the window configuration. If w |
6126 | is the selected window, then get the value of point from | |
6127 | the buffer; pointm is garbage in the selected window. */ | |
7ab12479 | 6128 | if (EQ (window, selected_window)) |
d3d50620 DA |
6129 | p->pointm = build_marker (XBUFFER (w->buffer), |
6130 | BUF_PT (XBUFFER (w->buffer)), | |
6131 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 | 6132 | else |
d3d50620 | 6133 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
de8c03dc SM |
6134 | XMARKER (p->pointm)->insertion_type |
6135 | = !NILP (Vwindow_point_insertion_type); | |
7ab12479 | 6136 | |
d3d50620 | 6137 | p->start = Fcopy_marker (w->start, Qnil); |
c98ff5dd | 6138 | p->start_at_line_beg = w->start_at_line_beg ? Qt : Qnil; |
7ab12479 | 6139 | |
d3d50620 | 6140 | tem = BVAR (XBUFFER (w->buffer), mark); |
eeb82665 | 6141 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6142 | } |
6143 | else | |
6144 | { | |
6145 | p->pointm = Qnil; | |
6146 | p->start = Qnil; | |
6147 | p->mark = Qnil; | |
6148 | p->start_at_line_beg = Qnil; | |
6149 | } | |
6150 | ||
d3d50620 | 6151 | if (NILP (w->parent)) |
7ab12479 JB |
6152 | p->parent = Qnil; |
6153 | else | |
d3d50620 | 6154 | p->parent = XWINDOW (w->parent)->temslot; |
7ab12479 | 6155 | |
d3d50620 | 6156 | if (NILP (w->prev)) |
7ab12479 JB |
6157 | p->prev = Qnil; |
6158 | else | |
d3d50620 | 6159 | p->prev = XWINDOW (w->prev)->temslot; |
7ab12479 | 6160 | |
d3d50620 DA |
6161 | if (!NILP (w->vchild)) |
6162 | i = save_window_save (w->vchild, vector, i); | |
6163 | if (!NILP (w->hchild)) | |
6164 | i = save_window_save (w->hchild, vector, i); | |
7ab12479 JB |
6165 | } |
6166 | ||
6167 | return i; | |
6168 | } | |
6169 | ||
a7ca3326 | 6170 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6171 | Scurrent_window_configuration, 0, 1, 0, |
6172 | doc: /* Return an object representing the current window configuration of FRAME. | |
6173 | If FRAME is nil or omitted, use the selected frame. | |
6174 | This describes the number of windows, their sizes and current buffers, | |
6175 | and for each displayed buffer, where display starts, and the positions of | |
6176 | point and mark. An exception is made for point in the current buffer: | |
6177 | its value is -not- saved. | |
6178 | This also records the currently selected frame, and FRAME's focus | |
34a02f46 MR |
6179 | redirection (see `redirect-frame-focus'). The variable |
6180 | `window-persistent-parameters' specifies which window parameters are | |
6181 | saved by this function. */) | |
5842a27b | 6182 | (Lisp_Object frame) |
7ab12479 JB |
6183 | { |
6184 | register Lisp_Object tem; | |
6185 | register int n_windows; | |
6186 | register struct save_window_data *data; | |
6187 | register int i; | |
d9f07150 | 6188 | struct frame *f = decode_live_frame (frame); |
7ab12479 | 6189 | |
44fa5b1e | 6190 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
6191 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
6192 | PVEC_WINDOW_CONFIGURATION); | |
6193 | ||
6194 | data->frame_cols = FRAME_COLS (f); | |
6195 | data->frame_lines = FRAME_LINES (f); | |
6196 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
6197 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 6198 | data->selected_frame = selected_frame; |
44fa5b1e | 6199 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6200 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6201 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6202 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6203 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6204 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
7ab12479 JB |
6205 | tem = Fmake_vector (make_number (n_windows), Qnil); |
6206 | data->saved_windows = tem; | |
6207 | for (i = 0; i < n_windows; i++) | |
28be1ada DA |
6208 | ASET (tem, i, |
6209 | Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil)); | |
a1d58e5b | 6210 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6211 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6212 | return (tem); |
6213 | } | |
5500c422 GM |
6214 | \f |
6215 | /*********************************************************************** | |
6216 | Marginal Areas | |
6217 | ***********************************************************************/ | |
6218 | ||
6219 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6220 | 2, 3, 0, |
fdb82f93 | 6221 | doc: /* Set width of marginal areas of window WINDOW. |
52162052 MR |
6222 | WINDOW must be a live window and defaults to the selected one. |
6223 | ||
6b61353c KH |
6224 | Second arg LEFT-WIDTH specifies the number of character cells to |
6225 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6226 | does the same for the right marginal area. A nil width parameter | |
6227 | means no margin. */) | |
5842a27b | 6228 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width) |
5500c422 | 6229 | { |
52162052 | 6230 | struct window *w = decode_live_window (window); |
5500c422 | 6231 | |
6b61353c KH |
6232 | /* Translate negative or zero widths to nil. |
6233 | Margins that are too wide have to be checked elsewhere. */ | |
949cf20f | 6234 | |
c10ce82e | 6235 | if (!NILP (left_width)) |
6b61353c | 6236 | { |
c10ce82e JB |
6237 | CHECK_NUMBER (left_width); |
6238 | if (XINT (left_width) <= 0) | |
6239 | left_width = Qnil; | |
6b61353c | 6240 | } |
5500c422 | 6241 | |
c10ce82e | 6242 | if (!NILP (right_width)) |
6b61353c | 6243 | { |
c10ce82e JB |
6244 | CHECK_NUMBER (right_width); |
6245 | if (XINT (right_width) <= 0) | |
6246 | right_width = Qnil; | |
6b61353c | 6247 | } |
5500c422 | 6248 | |
d3d50620 DA |
6249 | if (!EQ (w->left_margin_cols, left_width) |
6250 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6251 | { |
e8c17b81 PE |
6252 | wset_left_margin_cols (w, left_width); |
6253 | wset_right_margin_cols (w, right_width); | |
949cf20f KS |
6254 | |
6255 | adjust_window_margins (w); | |
6256 | ||
6257 | ++windows_or_buffers_changed; | |
6258 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6259 | } | |
5500c422 | 6260 | |
5500c422 GM |
6261 | return Qnil; |
6262 | } | |
6263 | ||
6264 | ||
6265 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6266 | 0, 1, 0, | |
fdb82f93 | 6267 | doc: /* Get width of marginal areas of window WINDOW. |
52162052 MR |
6268 | WINDOW must be a live window and defaults to the selected one. |
6269 | ||
fdb82f93 PJ |
6270 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). |
6271 | If a marginal area does not exist, its width will be returned | |
6272 | as nil. */) | |
5842a27b | 6273 | (Lisp_Object window) |
5500c422 | 6274 | { |
52162052 | 6275 | struct window *w = decode_live_window (window); |
d3d50620 | 6276 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
949cf20f KS |
6277 | } |
6278 | ||
6279 | ||
6280 | \f | |
6281 | /*********************************************************************** | |
6282 | Fringes | |
6283 | ***********************************************************************/ | |
6284 | ||
a7ca3326 | 6285 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, |
949cf20f | 6286 | 2, 4, 0, |
6b61353c | 6287 | doc: /* Set the fringe widths of window WINDOW. |
52162052 MR |
6288 | WINDOW must be a live window and defaults to the selected one. |
6289 | ||
6b61353c KH |
6290 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for |
6291 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6292 | fringe width. If a fringe width arg is nil, that means to use the | |
6293 | frame's default fringe width. Default fringe widths can be set with | |
6294 | the command `set-fringe-style'. | |
6295 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6296 | outside of the display margins. By default, fringes are drawn between | |
6297 | display marginal areas and the text area. */) | |
5842a27b | 6298 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width, Lisp_Object outside_margins) |
949cf20f | 6299 | { |
52162052 | 6300 | struct window *w = decode_live_window (window); |
2af3565e | 6301 | int outside = !NILP (outside_margins); |
949cf20f | 6302 | |
c10ce82e JB |
6303 | if (!NILP (left_width)) |
6304 | CHECK_NATNUM (left_width); | |
6305 | if (!NILP (right_width)) | |
6306 | CHECK_NATNUM (right_width); | |
5a857365 | 6307 | |
017e297e | 6308 | /* Do nothing on a tty. */ |
d46c6df5 | 6309 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
d3d50620 DA |
6310 | && (!EQ (w->left_fringe_width, left_width) |
6311 | || !EQ (w->right_fringe_width, right_width) | |
2af3565e | 6312 | || w->fringes_outside_margins != outside)) |
949cf20f | 6313 | { |
e8c17b81 PE |
6314 | wset_left_fringe_width (w, left_width); |
6315 | wset_right_fringe_width (w, right_width); | |
2af3565e | 6316 | w->fringes_outside_margins = outside; |
949cf20f KS |
6317 | |
6318 | adjust_window_margins (w); | |
6319 | ||
6320 | clear_glyph_matrix (w->current_matrix); | |
e8c17b81 | 6321 | wset_window_end_valid (w, Qnil); |
949cf20f KS |
6322 | |
6323 | ++windows_or_buffers_changed; | |
6324 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6325 | } | |
6326 | ||
6327 | return Qnil; | |
6328 | } | |
6329 | ||
6330 | ||
6331 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6332 | 0, 1, 0, | |
6333 | doc: /* Get width of fringes of window WINDOW. | |
52162052 MR |
6334 | WINDOW must be a live window and defaults to the selected one. |
6335 | ||
6b61353c | 6336 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
5842a27b | 6337 | (Lisp_Object window) |
949cf20f | 6338 | { |
52162052 | 6339 | struct window *w = decode_live_window (window); |
d46c6df5 | 6340 | |
89bc0592 DA |
6341 | return list3 (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6342 | make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
6343 | WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) ? Qt : Qnil); | |
949cf20f KS |
6344 | } |
6345 | ||
6346 | ||
6347 | \f | |
6348 | /*********************************************************************** | |
6349 | Scroll bars | |
6350 | ***********************************************************************/ | |
6351 | ||
a7ca3326 | 6352 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, |
16a97296 | 6353 | Sset_window_scroll_bars, 2, 4, 0, |
949cf20f | 6354 | doc: /* Set width and type of scroll bars of window WINDOW. |
52162052 MR |
6355 | WINDOW must be a live window and defaults to the selected one. |
6356 | ||
949cf20f KS |
6357 | Second parameter WIDTH specifies the pixel width for the scroll bar; |
6358 | this is automatically adjusted to a multiple of the frame column width. | |
6359 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6360 | bar: left, right, or nil. | |
6b61353c | 6361 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6362 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6363 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
5842a27b | 6364 | (Lisp_Object window, Lisp_Object width, Lisp_Object vertical_type, Lisp_Object horizontal_type) |
949cf20f | 6365 | { |
52162052 | 6366 | struct window *w = decode_live_window (window); |
949cf20f KS |
6367 | |
6368 | if (!NILP (width)) | |
0f8fe9a2 | 6369 | { |
af5a5a98 | 6370 | CHECK_RANGED_INTEGER (width, 0, INT_MAX); |
949cf20f | 6371 | |
0f8fe9a2 SM |
6372 | if (XINT (width) == 0) |
6373 | vertical_type = Qnil; | |
6374 | } | |
949cf20f | 6375 | |
413a79ad | 6376 | if (!(NILP (vertical_type) |
0cc1039f | 6377 | || EQ (vertical_type, Qleft) |
6b61353c KH |
6378 | || EQ (vertical_type, Qright) |
6379 | || EQ (vertical_type, Qt))) | |
6380 | error ("Invalid type of vertical scroll bar"); | |
6381 | ||
d3d50620 DA |
6382 | if (!EQ (w->scroll_bar_width, width) |
6383 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
949cf20f | 6384 | { |
e8c17b81 PE |
6385 | wset_scroll_bar_width (w, width); |
6386 | wset_vertical_scroll_bar_type (w, vertical_type); | |
949cf20f KS |
6387 | |
6388 | adjust_window_margins (w); | |
6389 | ||
6390 | clear_glyph_matrix (w->current_matrix); | |
e8c17b81 | 6391 | wset_window_end_valid (w, Qnil); |
949cf20f KS |
6392 | |
6393 | ++windows_or_buffers_changed; | |
6394 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6395 | } | |
6396 | ||
6397 | return Qnil; | |
6398 | } | |
6399 | ||
6400 | ||
6401 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6402 | 0, 1, 0, | |
6403 | doc: /* Get width and type of scroll bars of window WINDOW. | |
52162052 MR |
6404 | WINDOW must be a live window and defaults to the selected one. |
6405 | ||
6b61353c KH |
6406 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6407 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6408 | value. */) | |
5842a27b | 6409 | (Lisp_Object window) |
949cf20f | 6410 | { |
52162052 | 6411 | struct window *w = decode_live_window (window); |
89bc0592 DA |
6412 | |
6413 | return list4 (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
949cf20f KS |
6414 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) |
6415 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
89bc0592 DA |
6416 | make_number (WINDOW_SCROLL_BAR_COLS (w)), |
6417 | w->vertical_scroll_bar_type, Qnil); | |
5500c422 GM |
6418 | } |
6419 | ||
6420 | ||
7ab12479 | 6421 | \f |
5500c422 GM |
6422 | /*********************************************************************** |
6423 | Smooth scrolling | |
6424 | ***********************************************************************/ | |
6425 | ||
0cc1039f | 6426 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 | 6427 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
49745b39 | 6428 | If WINDOW is omitted or nil, it defaults to the selected window. |
0cc1039f | 6429 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6430 | optional second arg PIXELS-P means value is measured in pixels. */) |
5842a27b | 6431 | (Lisp_Object window, Lisp_Object pixels_p) |
5500c422 | 6432 | { |
47004952 | 6433 | Lisp_Object result; |
1f76f6f5 MR |
6434 | struct window *w = decode_live_window (window); |
6435 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 6436 | |
5500c422 | 6437 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6438 | result = (NILP (pixels_p) |
6439 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6440 | : make_number (-w->vscroll)); | |
5500c422 | 6441 | else |
47004952 GM |
6442 | result = make_number (0); |
6443 | return result; | |
5500c422 GM |
6444 | } |
6445 | ||
6446 | ||
6447 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6448 | 2, 3, 0, |
fdb82f93 | 6449 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6450 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6451 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6452 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6453 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6454 | corresponds to an integral number of pixels. The return value is the | |
6455 | result of this rounding. | |
6456 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
5842a27b | 6457 | (Lisp_Object window, Lisp_Object vscroll, Lisp_Object pixels_p) |
5500c422 | 6458 | { |
1f76f6f5 MR |
6459 | struct window *w = decode_live_window (window); |
6460 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 6461 | |
b7826503 | 6462 | CHECK_NUMBER_OR_FLOAT (vscroll); |
177c0ea7 | 6463 | |
5500c422 GM |
6464 | if (FRAME_WINDOW_P (f)) |
6465 | { | |
6466 | int old_dy = w->vscroll; | |
177c0ea7 | 6467 | |
0cc1039f KS |
6468 | w->vscroll = - (NILP (pixels_p) |
6469 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6470 | : XFLOATINT (vscroll)); | |
47004952 | 6471 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6472 | |
e56263e5 KS |
6473 | if (w->vscroll != old_dy) |
6474 | { | |
6475 | /* Adjust glyph matrix of the frame if the virtual display | |
6476 | area becomes larger than before. */ | |
6477 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
6478 | adjust_glyphs (f); | |
177c0ea7 | 6479 | |
e56263e5 | 6480 | /* Prevent redisplay shortcuts. */ |
d3d50620 | 6481 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
e56263e5 | 6482 | } |
5500c422 | 6483 | } |
177c0ea7 | 6484 | |
0cc1039f | 6485 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 6486 | } |
177c0ea7 | 6487 | |
7bbb5782 GM |
6488 | \f |
6489 | /* Call FN for all leaf windows on frame F. FN is called with the | |
6490 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 6491 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 | 6492 | |
2f7c71a1 AS |
6493 | static void |
6494 | foreach_window (struct frame *f, int (*fn) (struct window *, void *), | |
6495 | void *user_data) | |
7bbb5782 | 6496 | { |
56f2de10 | 6497 | /* delete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
76fb556f YM |
6498 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) |
6499 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
6500 | } |
6501 | ||
6502 | ||
6503 | /* Helper function for foreach_window. Call FN for all leaf windows | |
6504 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 6505 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 6506 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 6507 | |
67492200 | 6508 | static int |
971de7fb | 6509 | foreach_window_1 (struct window *w, int (*fn) (struct window *, void *), void *user_data) |
7bbb5782 | 6510 | { |
67492200 | 6511 | int cont; |
177c0ea7 | 6512 | |
67492200 | 6513 | for (cont = 1; w && cont;) |
7bbb5782 | 6514 | { |
d3d50620 DA |
6515 | if (!NILP (w->hchild)) |
6516 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); | |
6517 | else if (!NILP (w->vchild)) | |
6518 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); | |
177c0ea7 | 6519 | else |
0f532a9a | 6520 | cont = fn (w, user_data); |
177c0ea7 | 6521 | |
d3d50620 | 6522 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
7bbb5782 | 6523 | } |
67492200 GM |
6524 | |
6525 | return cont; | |
7bbb5782 GM |
6526 | } |
6527 | ||
6528 | ||
6d194a45 | 6529 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 6530 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
6531 | the window start. */ |
6532 | ||
67492200 | 6533 | static int |
971de7fb | 6534 | freeze_window_start (struct window *w, void *freeze_p) |
7bbb5782 | 6535 | { |
08c1d235 SM |
6536 | if (MINI_WINDOW_P (w) |
6537 | || (WINDOWP (selected_window) /* Can be nil in corner cases. */ | |
6538 | && (w == XWINDOW (selected_window) | |
6539 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
6540 | && ! NILP (Vminibuf_scroll_window) | |
6541 | && w == XWINDOW (Vminibuf_scroll_window))))) | |
f95464e4 | 6542 | freeze_p = NULL; |
177c0ea7 | 6543 | |
f95464e4 | 6544 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 6545 | return 1; |
7bbb5782 GM |
6546 | } |
6547 | ||
6548 | ||
6549 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
6550 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
6551 | means freeze the window start. */ | |
6552 | ||
6553 | void | |
971de7fb | 6554 | freeze_window_starts (struct frame *f, int freeze_p) |
7bbb5782 | 6555 | { |
cbccabec | 6556 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 6557 | } |
5500c422 GM |
6558 | |
6559 | \f | |
6560 | /*********************************************************************** | |
6561 | Initialization | |
6562 | ***********************************************************************/ | |
6563 | ||
6198ccd0 MR |
6564 | /* Return 1 if window configurations CONFIGURATION1 and CONFIGURATION2 |
6565 | describe the same state of affairs. This is used by Fequal. | |
6566 | ||
f75d7a91 | 6567 | IGNORE_POSITIONS means ignore non-matching scroll positions |
6198ccd0 MR |
6568 | and the like. |
6569 | ||
e4769531 | 6570 | This ignores a couple of things like the dedication status of |
b6f67890 MR |
6571 | window, combination_limit and the like. This might have to be |
6572 | fixed. */ | |
cbff28e8 | 6573 | |
f75d7a91 PE |
6574 | bool |
6575 | compare_window_configurations (Lisp_Object configuration1, | |
6576 | Lisp_Object configuration2, | |
6577 | bool ignore_positions) | |
cbff28e8 RS |
6578 | { |
6579 | register struct save_window_data *d1, *d2; | |
6198ccd0 | 6580 | struct Lisp_Vector *sws1, *sws2; |
71f02bc5 | 6581 | ptrdiff_t i; |
cbff28e8 | 6582 | |
6198ccd0 MR |
6583 | CHECK_WINDOW_CONFIGURATION (configuration1); |
6584 | CHECK_WINDOW_CONFIGURATION (configuration2); | |
6585 | ||
6586 | d1 = (struct save_window_data *) XVECTOR (configuration1); | |
6587 | d2 = (struct save_window_data *) XVECTOR (configuration2); | |
6588 | sws1 = XVECTOR (d1->saved_windows); | |
6589 | sws2 = XVECTOR (d2->saved_windows); | |
6590 | ||
6591 | /* Frame settings must match. */ | |
6592 | if (d1->frame_cols != d2->frame_cols | |
6593 | || d1->frame_lines != d2->frame_lines | |
6594 | || d1->frame_menu_bar_lines != d2->frame_menu_bar_lines | |
6595 | || !EQ (d1->selected_frame, d2->selected_frame) | |
6596 | || !EQ (d1->current_buffer, d2->current_buffer) | |
6597 | || (!ignore_positions | |
6598 | && (!EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window) | |
6599 | || !EQ (d1->minibuf_selected_window, d2->minibuf_selected_window))) | |
6600 | || !EQ (d1->focus_frame, d2->focus_frame) | |
6601 | /* Verify that the two configurations have the same number of windows. */ | |
6602 | || sws1->header.size != sws2->header.size) | |
cbff28e8 | 6603 | return 0; |
cbff28e8 | 6604 | |
6198ccd0 | 6605 | for (i = 0; i < sws1->header.size; i++) |
cbff28e8 | 6606 | { |
6198ccd0 | 6607 | struct saved_window *sw1, *sw2; |
cbff28e8 | 6608 | |
6198ccd0 MR |
6609 | sw1 = SAVED_WINDOW_N (sws1, i); |
6610 | sw2 = SAVED_WINDOW_N (sws2, i); | |
6611 | ||
6612 | if ( | |
6613 | /* The "current" windows in the two configurations must | |
6614 | correspond to each other. */ | |
6615 | EQ (d1->current_window, sw1->window) | |
6616 | != EQ (d2->current_window, sw2->window) | |
6617 | /* Windows' buffers must match. */ | |
6618 | || !EQ (sw1->buffer, sw2->buffer) | |
6619 | || !EQ (sw1->left_col, sw2->left_col) | |
6620 | || !EQ (sw1->top_line, sw2->top_line) | |
6621 | || !EQ (sw1->total_cols, sw2->total_cols) | |
6622 | || !EQ (sw1->total_lines, sw2->total_lines) | |
6623 | || !EQ (sw1->display_table, sw2->display_table) | |
6624 | /* The next two disjuncts check the window structure for | |
6625 | equality. */ | |
6626 | || !EQ (sw1->parent, sw2->parent) | |
6627 | || !EQ (sw1->prev, sw2->prev) | |
6628 | || (!ignore_positions | |
6629 | && (!EQ (sw1->hscroll, sw2->hscroll) | |
6630 | || !EQ (sw1->min_hscroll, sw2->min_hscroll) | |
6631 | || !EQ (sw1->start_at_line_beg, sw2->start_at_line_beg) | |
6632 | || NILP (Fequal (sw1->start, sw2->start)) | |
6633 | || NILP (Fequal (sw1->pointm, sw2->pointm)) | |
6634 | || NILP (Fequal (sw1->mark, sw2->mark)))) | |
6635 | || !EQ (sw1->left_margin_cols, sw2->left_margin_cols) | |
6636 | || !EQ (sw1->right_margin_cols, sw2->right_margin_cols) | |
6637 | || !EQ (sw1->left_fringe_width, sw2->left_fringe_width) | |
6638 | || !EQ (sw1->right_fringe_width, sw2->right_fringe_width) | |
6639 | || !EQ (sw1->fringes_outside_margins, sw2->fringes_outside_margins) | |
6640 | || !EQ (sw1->scroll_bar_width, sw2->scroll_bar_width) | |
6641 | || !EQ (sw1->vertical_scroll_bar_type, sw2->vertical_scroll_bar_type)) | |
949cf20f | 6642 | return 0; |
cbff28e8 RS |
6643 | } |
6644 | ||
6645 | return 1; | |
6646 | } | |
2f8274be RS |
6647 | |
6648 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
6649 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
6650 | doc: /* Compare two window configurations as regards the structure of windows. |
6651 | This function ignores details such as the values of point and mark | |
6652 | and scrolling positions. */) | |
5842a27b | 6653 | (Lisp_Object x, Lisp_Object y) |
2f8274be RS |
6654 | { |
6655 | if (compare_window_configurations (x, y, 1)) | |
6656 | return Qt; | |
6657 | return Qnil; | |
6658 | } | |
cbff28e8 | 6659 | \f |
dfcf069d | 6660 | void |
971de7fb | 6661 | init_window_once (void) |
7ab12479 | 6662 | { |
3224dac1 | 6663 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
6664 | XSETFRAME (selected_frame, f); |
6665 | Vterminal_frame = selected_frame; | |
e69b0960 DA |
6666 | minibuf_window = f->minibuffer_window; |
6667 | selected_window = f->selected_window; | |
1ae1a37d | 6668 | last_nonminibuf_frame = f; |
5b03d3c0 RS |
6669 | |
6670 | window_initialized = 1; | |
7ab12479 JB |
6671 | } |
6672 | ||
67492200 | 6673 | void |
971de7fb | 6674 | init_window (void) |
67492200 GM |
6675 | { |
6676 | Vwindow_list = Qnil; | |
6677 | } | |
6678 | ||
dfcf069d | 6679 | void |
971de7fb | 6680 | syms_of_window (void) |
7ab12479 | 6681 | { |
cd3520a4 JB |
6682 | DEFSYM (Qscroll_up, "scroll-up"); |
6683 | DEFSYM (Qscroll_down, "scroll-down"); | |
6684 | DEFSYM (Qscroll_command, "scroll-command"); | |
a4b000fb JL |
6685 | |
6686 | Fput (Qscroll_up, Qscroll_command, Qt); | |
6687 | Fput (Qscroll_down, Qscroll_command, Qt); | |
6688 | ||
cd3520a4 JB |
6689 | DEFSYM (Qwindow_configuration_change_hook, "window-configuration-change-hook"); |
6690 | DEFSYM (Qwindowp, "windowp"); | |
6691 | DEFSYM (Qwindow_configuration_p, "window-configuration-p"); | |
6692 | DEFSYM (Qwindow_live_p, "window-live-p"); | |
52162052 | 6693 | DEFSYM (Qwindow_valid_p, "window-valid-p"); |
cd3520a4 JB |
6694 | DEFSYM (Qwindow_deletable_p, "window-deletable-p"); |
6695 | DEFSYM (Qdelete_window, "delete-window"); | |
5386012d MR |
6696 | DEFSYM (Qwindow_resize_root_window, "window--resize-root-window"); |
6697 | DEFSYM (Qwindow_resize_root_window_vertically, "window--resize-root-window-vertically"); | |
cd3520a4 JB |
6698 | DEFSYM (Qsafe, "safe"); |
6699 | DEFSYM (Qdisplay_buffer, "display-buffer"); | |
6700 | DEFSYM (Qreplace_buffer_in_windows, "replace-buffer-in-windows"); | |
6701 | DEFSYM (Qrecord_window_buffer, "record-window-buffer"); | |
6702 | DEFSYM (Qget_mru_window, "get-mru-window"); | |
5938d519 | 6703 | DEFSYM (Qwindow_size, "window-size"); |
cd3520a4 JB |
6704 | DEFSYM (Qtemp_buffer_show_hook, "temp-buffer-show-hook"); |
6705 | DEFSYM (Qabove, "above"); | |
6706 | DEFSYM (Qbelow, "below"); | |
6a6ee00d | 6707 | DEFSYM (Qclone_of, "clone-of"); |
b9e809c2 | 6708 | |
67492200 | 6709 | staticpro (&Vwindow_list); |
8bfb170b KS |
6710 | |
6711 | minibuf_selected_window = Qnil; | |
3dbab091 | 6712 | staticpro (&minibuf_selected_window); |
67492200 | 6713 | |
c876b227 | 6714 | window_scroll_pixel_based_preserve_x = -1; |
66fe93d1 | 6715 | window_scroll_pixel_based_preserve_y = -1; |
c876b227 SM |
6716 | window_scroll_preserve_hpos = -1; |
6717 | window_scroll_preserve_vpos = -1; | |
66d43aea | 6718 | |
29208e82 | 6719 | DEFVAR_LISP ("temp-buffer-show-function", Vtemp_buffer_show_function, |
fdb82f93 PJ |
6720 | doc: /* Non-nil means call as function to display a help buffer. |
6721 | The function is called with one argument, the buffer to be displayed. | |
6722 | Used by `with-output-to-temp-buffer'. | |
6723 | If this function is used, then it must do the entire job of showing | |
6724 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 | 6725 | Vtemp_buffer_show_function = Qnil; |
e10ac9f1 | 6726 | |
29208e82 | 6727 | DEFVAR_LISP ("minibuffer-scroll-window", Vminibuf_scroll_window, |
fdb82f93 | 6728 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
6729 | Vminibuf_scroll_window = Qnil; |
6730 | ||
29208e82 | 6731 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", mode_line_in_non_selected_windows, |
26124d5e | 6732 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
6733 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
6734 | is displayed in the `mode-line' face. */); | |
6735 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 6736 | |
29208e82 | 6737 | DEFVAR_LISP ("other-window-scroll-buffer", Vother_window_scroll_buffer, |
fdb82f93 | 6738 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
6739 | Vother_window_scroll_buffer = Qnil; |
6740 | ||
29208e82 | 6741 | DEFVAR_BOOL ("auto-window-vscroll", auto_window_vscroll_p, |
e10ac9f1 | 6742 | doc: /* Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); |
e56263e5 KS |
6743 | auto_window_vscroll_p = 1; |
6744 | ||
29208e82 | 6745 | DEFVAR_INT ("next-screen-context-lines", next_screen_context_lines, |
e10ac9f1 | 6746 | doc: /* Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
6747 | next_screen_context_lines = 2; |
6748 | ||
5500c422 | 6749 | DEFVAR_LISP ("scroll-preserve-screen-position", |
29208e82 | 6750 | Vscroll_preserve_screen_position, |
e10ac9f1 | 6751 | doc: /* Controls if scroll commands move point to keep its screen position unchanged. |
bdf4ec93 RS |
6752 | A value of nil means point does not keep its screen position except |
6753 | at the scroll margin or window boundary respectively. | |
6754 | A value of t means point keeps its screen position if the scroll | |
6755 | command moved it vertically out of the window, e.g. when scrolling | |
6756 | by full screens. | |
9013a7f8 | 6757 | Any other value means point always keeps its screen position. |
a4b000fb JL |
6758 | Scroll commands should have the `scroll-command' property |
6759 | on their symbols to be controlled by this variable. */); | |
5500c422 | 6760 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 6761 | |
29208e82 | 6762 | DEFVAR_LISP ("window-point-insertion-type", Vwindow_point_insertion_type, |
a1562258 SM |
6763 | doc: /* Type of marker to use for `window-point'. */); |
6764 | Vwindow_point_insertion_type = Qnil; | |
6765 | ||
543f5fb1 | 6766 | DEFVAR_LISP ("window-configuration-change-hook", |
29208e82 | 6767 | Vwindow_configuration_change_hook, |
fdb82f93 | 6768 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
6769 | The buffer-local part is run once per window, with the relevant window |
6770 | selected; while the global part is run only once for the modified frame, | |
6771 | with the relevant frame selected. */); | |
543f5fb1 RS |
6772 | Vwindow_configuration_change_hook = Qnil; |
6773 | ||
29208e82 | 6774 | DEFVAR_LISP ("recenter-redisplay", Vrecenter_redisplay, |
61d4b438 MR |
6775 | doc: /* Non-nil means `recenter' redraws entire frame. |
6776 | If this option is non-nil, then the `recenter' command with a nil | |
6777 | argument will redraw the entire frame; the special value `tty' causes | |
6778 | the frame to be redrawn only if it is a tty frame. */); | |
666e158e MB |
6779 | Vrecenter_redisplay = Qtty; |
6780 | ||
a0c2d0ae | 6781 | DEFVAR_LISP ("window-combination-resize", Vwindow_combination_resize, |
454592a6 | 6782 | doc: /* If t, resize window combinations proportionally. |
1a13852e | 6783 | If this variable is nil, splitting a window gets the entire screen space |
a0c2d0ae | 6784 | for displaying the new window from the window to split. Deleting and |
df85d315 | 6785 | resizing a window preferably resizes one adjacent window only. |
a0c2d0ae | 6786 | |
454592a6 | 6787 | If this variable is t, splitting a window tries to get the space |
a0c2d0ae MR |
6788 | proportionally from all windows in the same combination. This also |
6789 | allows to split a window that is otherwise too small or of fixed size. | |
6790 | Resizing and deleting a window proportionally resize all windows in the | |
6791 | same combination. | |
1a13852e | 6792 | |
454592a6 MR |
6793 | Other values are reserved for future use. |
6794 | ||
b6f67890 | 6795 | This variable takes no effect if `window-combination-limit' is non-nil. */); |
a0c2d0ae | 6796 | Vwindow_combination_resize = Qnil; |
1a13852e | 6797 | |
b6f67890 | 6798 | DEFVAR_LISP ("window-combination-limit", Vwindow_combination_limit, |
8e17c9ba MR |
6799 | doc: /* If non-nil, splitting a window makes a new parent window. |
6800 | The following values are recognized: | |
1a13852e | 6801 | |
8e17c9ba | 6802 | nil means splitting a window will create a new parent window only if the |
5938d519 MR |
6803 | window has no parent window or the window shall become part of a |
6804 | combination orthogonal to the one it is part of. | |
1a13852e | 6805 | |
5938d519 MR |
6806 | `window-size' means that splitting a window for displaying a buffer |
6807 | makes a new parent window provided `display-buffer' is supposed to | |
6808 | explicitly set the window's size due to the presence of a | |
6809 | `window-height' or `window-width' entry in the alist used by | |
6810 | `display-buffer'. Otherwise, this value is handled like nil. | |
8e17c9ba MR |
6811 | |
6812 | `temp-buffer' means that splitting a window for displaying a temporary | |
6813 | buffer always makes a new parent window. Otherwise, this value is | |
6814 | handled like nil. | |
6815 | ||
8e17c9ba MR |
6816 | `display-buffer' means that splitting a window for displaying a buffer |
6817 | always makes a new parent window. Since temporary buffers are | |
6818 | displayed by the function `display-buffer', this value is stronger | |
6819 | than `temp-buffer'. Splitting a window for other purpose makes a | |
6820 | new parent window only if needed. | |
6821 | ||
6822 | t means that splitting a window always creates a new parent window. If | |
6823 | all splits behave this way, each frame's window tree is a binary | |
6824 | tree and every window but the frame's root window has exactly one | |
6825 | sibling. | |
1a13852e | 6826 | |
8e17c9ba | 6827 | Other values are reserved for future use. */); |
5938d519 | 6828 | Vwindow_combination_limit = Qwindow_size; |
666e158e | 6829 | |
6a6ee00d MR |
6830 | DEFVAR_LISP ("window-persistent-parameters", Vwindow_persistent_parameters, |
6831 | doc: /* Alist of persistent window parameters. | |
34a02f46 MR |
6832 | This alist specifies which window parameters shall get saved by |
6833 | `current-window-configuration' and `window-state-get' and subsequently | |
6834 | restored to their previous values by `set-window-configuration' and | |
6835 | `window-state-put'. | |
6a6ee00d MR |
6836 | |
6837 | The car of each entry of this alist is the symbol specifying the | |
6838 | parameter. The cdr is one of the following: | |
6839 | ||
34a02f46 MR |
6840 | nil means the parameter is neither saved by `window-state-get' nor by |
6841 | `current-window-configuration'. | |
6a6ee00d | 6842 | |
34a02f46 MR |
6843 | t means the parameter is saved by `current-window-configuration' and, |
6844 | provided its WRITABLE argument is nil, by `window-state-get'. | |
6a6ee00d | 6845 | |
34a02f46 MR |
6846 | The symbol `writable' means the parameter is saved unconditionally by |
6847 | both `current-window-configuration' and `window-state-get'. Do not use | |
6848 | this value for parameters without read syntax (like windows or frames). | |
6a6ee00d MR |
6849 | |
6850 | Parameters not saved by `current-window-configuration' or | |
6851 | `window-state-get' are left alone by `set-window-configuration' | |
6852 | respectively are not installed by `window-state-put'. */); | |
34a02f46 | 6853 | Vwindow_persistent_parameters = list1 (Fcons (Qclone_of, Qt)); |
6a6ee00d | 6854 | |
7ab12479 JB |
6855 | defsubr (&Sselected_window); |
6856 | defsubr (&Sminibuffer_window); | |
6857 | defsubr (&Swindow_minibuffer_p); | |
6858 | defsubr (&Swindowp); | |
52162052 | 6859 | defsubr (&Swindow_valid_p); |
806b4d9b | 6860 | defsubr (&Swindow_live_p); |
727e958e MR |
6861 | defsubr (&Swindow_frame); |
6862 | defsubr (&Sframe_root_window); | |
6863 | defsubr (&Sframe_first_window); | |
6864 | defsubr (&Sframe_selected_window); | |
6865 | defsubr (&Sset_frame_selected_window); | |
7ab12479 | 6866 | defsubr (&Spos_visible_in_window_p); |
536833ab | 6867 | defsubr (&Swindow_line_height); |
7ab12479 | 6868 | defsubr (&Swindow_buffer); |
bf60a96b | 6869 | defsubr (&Swindow_parent); |
d68443dc MR |
6870 | defsubr (&Swindow_top_child); |
6871 | defsubr (&Swindow_left_child); | |
6872 | defsubr (&Swindow_next_sibling); | |
6873 | defsubr (&Swindow_prev_sibling); | |
b6f67890 MR |
6874 | defsubr (&Swindow_combination_limit); |
6875 | defsubr (&Sset_window_combination_limit); | |
abde8f8c MR |
6876 | defsubr (&Swindow_use_time); |
6877 | defsubr (&Swindow_top_line); | |
6878 | defsubr (&Swindow_left_column); | |
105216ed CY |
6879 | defsubr (&Swindow_total_height); |
6880 | defsubr (&Swindow_total_width); | |
496e208e MR |
6881 | defsubr (&Swindow_normal_size); |
6882 | defsubr (&Swindow_new_total); | |
6883 | defsubr (&Swindow_new_normal); | |
6884 | defsubr (&Sset_window_new_total); | |
6885 | defsubr (&Sset_window_new_normal); | |
d615d6d2 | 6886 | defsubr (&Swindow_resize_apply); |
105216ed CY |
6887 | defsubr (&Swindow_body_height); |
6888 | defsubr (&Swindow_body_width); | |
7ab12479 JB |
6889 | defsubr (&Swindow_hscroll); |
6890 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
6891 | defsubr (&Swindow_redisplay_end_trigger); |
6892 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 6893 | defsubr (&Swindow_edges); |
c99a9eb3 | 6894 | defsubr (&Swindow_pixel_edges); |
9d5405ec | 6895 | defsubr (&Swindow_absolute_pixel_edges); |
c99a9eb3 RS |
6896 | defsubr (&Swindow_inside_edges); |
6897 | defsubr (&Swindow_inside_pixel_edges); | |
9d5405ec | 6898 | defsubr (&Swindow_inside_absolute_pixel_edges); |
d5783c40 JB |
6899 | defsubr (&Scoordinates_in_window_p); |
6900 | defsubr (&Swindow_at); | |
7ab12479 JB |
6901 | defsubr (&Swindow_point); |
6902 | defsubr (&Swindow_start); | |
6903 | defsubr (&Swindow_end); | |
6904 | defsubr (&Sset_window_point); | |
6905 | defsubr (&Sset_window_start); | |
6906 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 6907 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
6908 | defsubr (&Swindow_display_table); |
6909 | defsubr (&Sset_window_display_table); | |
6910 | defsubr (&Snext_window); | |
6911 | defsubr (&Sprevious_window); | |
7ab12479 | 6912 | defsubr (&Sget_buffer_window); |
1a13852e MR |
6913 | defsubr (&Sdelete_other_windows_internal); |
6914 | defsubr (&Sdelete_window_internal); | |
6915 | defsubr (&Sresize_mini_window_internal); | |
7ab12479 | 6916 | defsubr (&Sset_window_buffer); |
1a13852e | 6917 | defsubr (&Srun_window_configuration_change_hook); |
7ab12479 | 6918 | defsubr (&Sselect_window); |
6b61353c | 6919 | defsubr (&Sforce_window_update); |
1a13852e | 6920 | defsubr (&Ssplit_window_internal); |
7ab12479 JB |
6921 | defsubr (&Sscroll_up); |
6922 | defsubr (&Sscroll_down); | |
6923 | defsubr (&Sscroll_left); | |
6924 | defsubr (&Sscroll_right); | |
ccd0664b | 6925 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 6926 | defsubr (&Sscroll_other_window); |
fa832261 | 6927 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 6928 | defsubr (&Srecenter); |
81fe0836 | 6929 | defsubr (&Swindow_text_height); |
7ab12479 JB |
6930 | defsubr (&Smove_to_window_line); |
6931 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 6932 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
6933 | defsubr (&Sset_window_configuration); |
6934 | defsubr (&Scurrent_window_configuration); | |
5500c422 GM |
6935 | defsubr (&Sset_window_margins); |
6936 | defsubr (&Swindow_margins); | |
949cf20f KS |
6937 | defsubr (&Sset_window_fringes); |
6938 | defsubr (&Swindow_fringes); | |
6939 | defsubr (&Sset_window_scroll_bars); | |
6940 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
6941 | defsubr (&Swindow_vscroll); |
6942 | defsubr (&Sset_window_vscroll); | |
2f8274be | 6943 | defsubr (&Scompare_window_configurations); |
67492200 | 6944 | defsubr (&Swindow_list); |
abde8f8c | 6945 | defsubr (&Swindow_list_1); |
496e208e MR |
6946 | defsubr (&Swindow_prev_buffers); |
6947 | defsubr (&Sset_window_prev_buffers); | |
6948 | defsubr (&Swindow_next_buffers); | |
6949 | defsubr (&Sset_window_next_buffers); | |
cfbb2395 JB |
6950 | defsubr (&Swindow_parameters); |
6951 | defsubr (&Swindow_parameter); | |
6952 | defsubr (&Sset_window_parameter); | |
7ab12479 JB |
6953 | } |
6954 | ||
dfcf069d | 6955 | void |
971de7fb | 6956 | keys_of_window (void) |
7ab12479 | 6957 | { |
7ab12479 JB |
6958 | initial_define_key (control_x_map, '<', "scroll-left"); |
6959 | initial_define_key (control_x_map, '>', "scroll-right"); | |
6960 | ||
32129746 | 6961 | initial_define_key (global_map, Ctl ('V'), "scroll-up-command"); |
7ab12479 | 6962 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); |
32129746 | 6963 | initial_define_key (meta_map, 'v', "scroll-down-command"); |
7ab12479 | 6964 | } |