Commit | Line | Data |
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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
ab422c4d PE |
3 | Copyright (C) 1985-1987, 1993-1998, 2000-2013 Free Software |
4 | Foundation, Inc. | |
7ab12479 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
7ab12479 | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
7ab12479 JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
7ab12479 | 20 | |
18160b98 | 21 | #include <config.h> |
e8c17b81 PE |
22 | |
23 | #define WINDOW_INLINE EXTERN_INLINE | |
24 | ||
4d553a13 KL |
25 | #include <stdio.h> |
26 | ||
7ab12479 | 27 | #include "lisp.h" |
e5560ff7 | 28 | #include "character.h" |
7ab12479 | 29 | #include "buffer.h" |
3e4731a3 | 30 | #include "keyboard.h" |
e35f6ff7 | 31 | #include "keymap.h" |
44fa5b1e | 32 | #include "frame.h" |
7ab12479 JB |
33 | #include "window.h" |
34 | #include "commands.h" | |
35 | #include "indent.h" | |
36 | #include "termchar.h" | |
37 | #include "disptab.h" | |
dfcf069d | 38 | #include "dispextern.h" |
5500c422 GM |
39 | #include "blockinput.h" |
40 | #include "intervals.h" | |
de509a60 | 41 | #include "termhooks.h" /* For FRAME_TERMINAL. */ |
5500c422 | 42 | |
6d55d620 | 43 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 44 | #include "xterm.h" |
5500c422 | 45 | #endif /* HAVE_X_WINDOWS */ |
0fda9b75 | 46 | #ifdef HAVE_NTGUI |
8f23f280 AI |
47 | #include "w32term.h" |
48 | #endif | |
1e3c8885 EZ |
49 | #ifdef MSDOS |
50 | #include "msdos.h" | |
51 | #endif | |
edfda783 AR |
52 | #ifdef HAVE_NS |
53 | #include "nsterm.h" | |
54 | #endif | |
5500c422 | 55 | |
b52d6985 PE |
56 | Lisp_Object Qwindowp, Qwindow_live_p; |
57 | static Lisp_Object Qwindow_valid_p; | |
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); | |
748fa866 DA |
87 | static int window_resize_check (struct window *, bool); |
88 | static void window_resize_apply (struct window *, bool); | |
7c82f3e2 | 89 | static Lisp_Object select_window (Lisp_Object, Lisp_Object, int); |
12384b01 | 90 | static void select_window_1 (Lisp_Object, bool); |
b7354ddf | 91 | |
7ab12479 JB |
92 | /* This is the window in which the terminal's cursor should |
93 | be left when nothing is being done with it. This must | |
94 | always be a leaf window, and its buffer is selected by | |
95 | the top level editing loop at the end of each command. | |
96 | ||
97 | This value is always the same as | |
44fa5b1e | 98 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
99 | Lisp_Object selected_window; |
100 | ||
67492200 GM |
101 | /* A list of all windows for use by next_window and Fwindow_list. |
102 | Functions creating or deleting windows should invalidate this cache | |
103 | by setting it to nil. */ | |
67492200 GM |
104 | Lisp_Object Vwindow_list; |
105 | ||
5500c422 GM |
106 | /* The mini-buffer window of the selected frame. |
107 | Note that you cannot test for mini-bufferness of an arbitrary window | |
108 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 JB |
109 | the selected window. */ |
110 | Lisp_Object minibuf_window; | |
111 | ||
3f49fddc KS |
112 | /* Non-nil means it is the window whose mode line should be |
113 | shown as the selected window when the minibuffer is selected. */ | |
3dbab091 | 114 | Lisp_Object minibuf_selected_window; |
3f49fddc | 115 | |
a58ec57d | 116 | /* Hook run at end of temp_output_buffer_show. */ |
955cbe7b | 117 | static Lisp_Object Qtemp_buffer_show_hook; |
a58ec57d | 118 | |
5b03d3c0 RS |
119 | /* Nonzero after init_window_once has finished. */ |
120 | static int window_initialized; | |
121 | ||
543f5fb1 | 122 | /* Hook to run when window config changes. */ |
eeca6f6f | 123 | static Lisp_Object Qwindow_configuration_change_hook; |
0d384044 | 124 | |
66d43aea | 125 | /* Used by the function window_scroll_pixel_based */ |
c876b227 | 126 | static int window_scroll_pixel_based_preserve_x; |
66fe93d1 | 127 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 128 | |
c876b227 | 129 | /* Same for window_scroll_line_based. */ |
d311d28c PE |
130 | static EMACS_INT window_scroll_preserve_hpos; |
131 | static EMACS_INT window_scroll_preserve_vpos; | |
f230ecc9 | 132 | \f |
e8c17b81 | 133 | /* These setters are used only in this file, so they can be private. */ |
b0ab8123 | 134 | static void |
e8c17b81 PE |
135 | wset_combination_limit (struct window *w, Lisp_Object val) |
136 | { | |
137 | w->combination_limit = val; | |
138 | } | |
b0ab8123 | 139 | static void |
e8c17b81 PE |
140 | wset_dedicated (struct window *w, Lisp_Object val) |
141 | { | |
142 | w->dedicated = val; | |
143 | } | |
b0ab8123 | 144 | static void |
e8c17b81 PE |
145 | wset_display_table (struct window *w, Lisp_Object val) |
146 | { | |
147 | w->display_table = val; | |
148 | } | |
b0ab8123 | 149 | static void |
e8c17b81 PE |
150 | wset_hchild (struct window *w, Lisp_Object val) |
151 | { | |
152 | w->hchild = val; | |
153 | } | |
b0ab8123 | 154 | static void |
e8c17b81 PE |
155 | wset_left_fringe_width (struct window *w, Lisp_Object val) |
156 | { | |
157 | w->left_fringe_width = val; | |
158 | } | |
b0ab8123 | 159 | static void |
e8c17b81 PE |
160 | wset_left_margin_cols (struct window *w, Lisp_Object val) |
161 | { | |
162 | w->left_margin_cols = val; | |
163 | } | |
b0ab8123 | 164 | static void |
e8c17b81 PE |
165 | wset_new_normal (struct window *w, Lisp_Object val) |
166 | { | |
167 | w->new_normal = val; | |
168 | } | |
b0ab8123 | 169 | static void |
e8c17b81 PE |
170 | wset_new_total (struct window *w, Lisp_Object val) |
171 | { | |
172 | w->new_total = val; | |
173 | } | |
b0ab8123 | 174 | static void |
e8c17b81 PE |
175 | wset_normal_cols (struct window *w, Lisp_Object val) |
176 | { | |
177 | w->normal_cols = val; | |
178 | } | |
b0ab8123 | 179 | static void |
e8c17b81 PE |
180 | wset_normal_lines (struct window *w, Lisp_Object val) |
181 | { | |
182 | w->normal_lines = val; | |
183 | } | |
b0ab8123 | 184 | static void |
e8c17b81 PE |
185 | wset_parent (struct window *w, Lisp_Object val) |
186 | { | |
187 | w->parent = val; | |
188 | } | |
b0ab8123 | 189 | static void |
e8c17b81 PE |
190 | wset_pointm (struct window *w, Lisp_Object val) |
191 | { | |
192 | w->pointm = val; | |
193 | } | |
b0ab8123 | 194 | static void |
e8c17b81 PE |
195 | wset_right_fringe_width (struct window *w, Lisp_Object val) |
196 | { | |
197 | w->right_fringe_width = val; | |
198 | } | |
b0ab8123 | 199 | static void |
e8c17b81 PE |
200 | wset_right_margin_cols (struct window *w, Lisp_Object val) |
201 | { | |
202 | w->right_margin_cols = val; | |
203 | } | |
b0ab8123 | 204 | static void |
e8c17b81 PE |
205 | wset_scroll_bar_width (struct window *w, Lisp_Object val) |
206 | { | |
207 | w->scroll_bar_width = val; | |
208 | } | |
b0ab8123 | 209 | static void |
e8c17b81 PE |
210 | wset_start (struct window *w, Lisp_Object val) |
211 | { | |
212 | w->start = val; | |
213 | } | |
b0ab8123 | 214 | static void |
e8c17b81 PE |
215 | wset_temslot (struct window *w, Lisp_Object val) |
216 | { | |
217 | w->temslot = val; | |
218 | } | |
b0ab8123 | 219 | static void |
e8c17b81 PE |
220 | wset_vchild (struct window *w, Lisp_Object val) |
221 | { | |
222 | w->vchild = val; | |
223 | } | |
b0ab8123 | 224 | static void |
e8c17b81 PE |
225 | wset_vertical_scroll_bar_type (struct window *w, Lisp_Object val) |
226 | { | |
227 | w->vertical_scroll_bar_type = val; | |
228 | } | |
b0ab8123 | 229 | static void |
e8c17b81 PE |
230 | wset_window_parameters (struct window *w, Lisp_Object val) |
231 | { | |
232 | w->window_parameters = val; | |
233 | } | |
234 | ||
52162052 MR |
235 | struct window * |
236 | decode_live_window (register Lisp_Object window) | |
f230ecc9 MR |
237 | { |
238 | if (NILP (window)) | |
239 | return XWINDOW (selected_window); | |
c876b227 | 240 | |
f230ecc9 MR |
241 | CHECK_LIVE_WINDOW (window); |
242 | return XWINDOW (window); | |
243 | } | |
244 | ||
b9e9df47 | 245 | struct window * |
f230ecc9 MR |
246 | decode_any_window (register Lisp_Object window) |
247 | { | |
6e5d1c12 CY |
248 | struct window *w; |
249 | ||
f230ecc9 MR |
250 | if (NILP (window)) |
251 | return XWINDOW (selected_window); | |
252 | ||
253 | CHECK_WINDOW (window); | |
6e5d1c12 | 254 | w = XWINDOW (window); |
6e5d1c12 | 255 | return w; |
f230ecc9 | 256 | } |
666e158e | 257 | |
b52d6985 | 258 | static struct window * |
52162052 MR |
259 | decode_valid_window (register Lisp_Object window) |
260 | { | |
261 | struct window *w; | |
262 | ||
263 | if (NILP (window)) | |
264 | return XWINDOW (selected_window); | |
265 | ||
266 | CHECK_VALID_WINDOW (window); | |
267 | w = XWINDOW (window); | |
268 | return w; | |
269 | } | |
270 | ||
98a07056 DA |
271 | /* Called when W's buffer slot is changed. ARG -1 means that W is about to |
272 | cease its buffer, and 1 means that W is about to set up the new one. */ | |
273 | ||
274 | static void | |
275 | adjust_window_count (struct window *w, int arg) | |
276 | { | |
277 | eassert (eabs (arg) == 1); | |
278 | if (BUFFERP (w->buffer)) | |
279 | { | |
280 | struct buffer *b = XBUFFER (w->buffer); | |
3f781c75 | 281 | |
98a07056 DA |
282 | if (b->base_buffer) |
283 | b = b->base_buffer; | |
284 | b->window_count += arg; | |
285 | eassert (b->window_count >= 0); | |
422ff52b | 286 | /* These should be recalculated by redisplay code. */ |
9d93ce29 | 287 | w->window_end_valid = 0; |
422ff52b | 288 | w->base_line_pos = 0; |
98a07056 DA |
289 | } |
290 | } | |
291 | ||
292 | /* Set W's buffer slot to VAL and recompute number | |
293 | of windows showing VAL if it is a buffer. */ | |
294 | ||
295 | void | |
296 | wset_buffer (struct window *w, Lisp_Object val) | |
297 | { | |
298 | adjust_window_count (w, -1); | |
299 | w->buffer = val; | |
300 | adjust_window_count (w, 1); | |
301 | } | |
302 | ||
7ab12479 | 303 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, |
f230ecc9 | 304 | doc: /* Return t if OBJECT is a window and nil otherwise. */) |
5842a27b | 305 | (Lisp_Object object) |
7ab12479 | 306 | { |
413430c5 | 307 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
308 | } |
309 | ||
52162052 MR |
310 | DEFUN ("window-valid-p", Fwindow_valid_p, Swindow_valid_p, 1, 1, 0, |
311 | doc: /* Return t if OBJECT is a valid window and nil otherwise. | |
312 | A valid window is either a window that displays a buffer or an internal | |
313 | window. Deleted windows are not live. */) | |
314 | (Lisp_Object object) | |
315 | { | |
316 | return WINDOW_VALID_P (object) ? Qt : Qnil; | |
317 | } | |
318 | ||
806b4d9b | 319 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
f230ecc9 | 320 | doc: /* Return t if OBJECT is a live window and nil otherwise. |
49745b39 CY |
321 | A live window is a window that displays a buffer. |
322 | Internal windows and deleted windows are not live. */) | |
5842a27b | 323 | (Lisp_Object object) |
605be8af | 324 | { |
9e571f49 | 325 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af | 326 | } |
727e958e MR |
327 | \f |
328 | /* Frames and windows. */ | |
89bc0592 | 329 | DEFUN ("window-frame", Fwindow_frame, Swindow_frame, 0, 1, 0, |
727e958e | 330 | doc: /* Return the frame that window WINDOW is on. |
52162052 | 331 | WINDOW must be a valid window and defaults to the selected one. */) |
727e958e MR |
332 | (Lisp_Object window) |
333 | { | |
52162052 | 334 | return decode_valid_window (window)->frame; |
727e958e MR |
335 | } |
336 | ||
337 | DEFUN ("frame-root-window", Fframe_root_window, Sframe_root_window, 0, 1, 0, | |
87e68db4 JB |
338 | doc: /* Return the root window of FRAME-OR-WINDOW. |
339 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
49745b39 CY |
340 | With a frame argument, return that frame's root window. |
341 | With a window argument, return the root window of that window's frame. */) | |
727e958e MR |
342 | (Lisp_Object frame_or_window) |
343 | { | |
344 | Lisp_Object window; | |
345 | ||
346 | if (NILP (frame_or_window)) | |
e69b0960 | 347 | window = SELECTED_FRAME ()->root_window; |
52162052 MR |
348 | else if (WINDOW_VALID_P (frame_or_window)) |
349 | window = XFRAME (XWINDOW (frame_or_window)->frame)->root_window; | |
727e958e MR |
350 | else |
351 | { | |
352 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 353 | window = XFRAME (frame_or_window)->root_window; |
727e958e MR |
354 | } |
355 | ||
356 | return window; | |
357 | } | |
358 | ||
359 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, | |
49745b39 CY |
360 | doc: /* Return the minibuffer window for frame FRAME. |
361 | If FRAME is omitted or nil, it defaults to the selected frame. */) | |
727e958e MR |
362 | (Lisp_Object frame) |
363 | { | |
d9f07150 | 364 | return FRAME_MINIBUF_WINDOW (decode_live_frame (frame)); |
727e958e MR |
365 | } |
366 | ||
367 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, | |
368 | Swindow_minibuffer_p, 0, 1, 0, | |
369 | doc: /* Return non-nil if WINDOW is a minibuffer window. | |
52162052 | 370 | WINDOW must be a valid window and defaults to the selected one. */) |
727e958e MR |
371 | (Lisp_Object window) |
372 | { | |
52162052 | 373 | return MINI_WINDOW_P (decode_valid_window (window)) ? Qt : Qnil; |
727e958e MR |
374 | } |
375 | ||
376 | /* Don't move this to window.el - this must be a safe routine. */ | |
377 | DEFUN ("frame-first-window", Fframe_first_window, Sframe_first_window, 0, 1, 0, | |
87e68db4 JB |
378 | doc: /* Return the topmost, leftmost live window on FRAME-OR-WINDOW. |
379 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
52162052 MR |
380 | Else if FRAME-OR-WINDOW denotes a valid window, return the first window |
381 | of that window's frame. If FRAME-OR-WINDOW denotes a live frame, return | |
727e958e MR |
382 | the first window of that frame. */) |
383 | (Lisp_Object frame_or_window) | |
384 | { | |
385 | Lisp_Object window; | |
386 | ||
387 | if (NILP (frame_or_window)) | |
e69b0960 | 388 | window = SELECTED_FRAME ()->root_window; |
52162052 | 389 | else if (WINDOW_VALID_P (frame_or_window)) |
e69b0960 | 390 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window; |
727e958e MR |
391 | else |
392 | { | |
393 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 394 | window = XFRAME (frame_or_window)->root_window; |
727e958e MR |
395 | } |
396 | ||
d3d50620 | 397 | while (NILP (XWINDOW (window)->buffer)) |
727e958e | 398 | { |
d3d50620 DA |
399 | if (! NILP (XWINDOW (window)->hchild)) |
400 | window = XWINDOW (window)->hchild; | |
401 | else if (! NILP (XWINDOW (window)->vchild)) | |
402 | window = XWINDOW (window)->vchild; | |
727e958e | 403 | else |
1088b922 | 404 | emacs_abort (); |
727e958e MR |
405 | } |
406 | ||
407 | return window; | |
408 | } | |
409 | ||
410 | DEFUN ("frame-selected-window", Fframe_selected_window, | |
411 | Sframe_selected_window, 0, 1, 0, | |
87e68db4 JB |
412 | doc: /* Return the selected window of FRAME-OR-WINDOW. |
413 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
52162052 MR |
414 | Else if FRAME-OR-WINDOW denotes a valid window, return the selected |
415 | window of that window's frame. If FRAME-OR-WINDOW denotes a live frame, | |
416 | return the selected window of that frame. */) | |
727e958e MR |
417 | (Lisp_Object frame_or_window) |
418 | { | |
419 | Lisp_Object window; | |
420 | ||
421 | if (NILP (frame_or_window)) | |
e69b0960 | 422 | window = SELECTED_FRAME ()->selected_window; |
52162052 | 423 | else if (WINDOW_VALID_P (frame_or_window)) |
e69b0960 | 424 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->selected_window; |
727e958e MR |
425 | else |
426 | { | |
427 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 428 | window = XFRAME (frame_or_window)->selected_window; |
727e958e MR |
429 | } |
430 | ||
431 | return window; | |
432 | } | |
433 | ||
434 | DEFUN ("set-frame-selected-window", Fset_frame_selected_window, | |
435 | Sset_frame_selected_window, 2, 3, 0, | |
436 | doc: /* Set selected window of FRAME to WINDOW. | |
437 | FRAME must be a live frame and defaults to the selected one. If FRAME | |
438 | is the selected frame, this makes WINDOW the selected window. Optional | |
439 | argument NORECORD non-nil means to neither change the order of recently | |
440 | selected windows nor the buffer list. WINDOW must denote a live window. | |
441 | Return WINDOW. */) | |
442 | (Lisp_Object frame, Lisp_Object window, Lisp_Object norecord) | |
443 | { | |
444 | if (NILP (frame)) | |
445 | frame = selected_frame; | |
446 | ||
447 | CHECK_LIVE_FRAME (frame); | |
448 | CHECK_LIVE_WINDOW (window); | |
449 | ||
450 | if (! EQ (frame, WINDOW_FRAME (XWINDOW (window)))) | |
451 | error ("In `set-frame-selected-window', WINDOW is not on FRAME"); | |
452 | ||
453 | if (EQ (frame, selected_frame)) | |
454 | return Fselect_window (window, norecord); | |
455 | else | |
f00af5b1 PE |
456 | { |
457 | fset_selected_window (XFRAME (frame), window); | |
458 | return window; | |
459 | } | |
727e958e MR |
460 | } |
461 | ||
462 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
463 | doc: /* Return the selected window. | |
464 | The selected window is the window in which the standard cursor for | |
465 | selected windows appears and to which many commands apply. */) | |
466 | (void) | |
467 | { | |
468 | return selected_window; | |
469 | } | |
470 | ||
9397e56f MR |
471 | int window_select_count; |
472 | ||
727e958e MR |
473 | /* If select_window is called with inhibit_point_swap non-zero it will |
474 | not store point of the old selected window's buffer back into that | |
475 | window's pointm slot. This is needed by Fset_window_configuration to | |
476 | avoid that the display routine is called with selected_window set to | |
477 | Qnil causing a subsequent crash. */ | |
478 | static Lisp_Object | |
479 | select_window (Lisp_Object window, Lisp_Object norecord, int inhibit_point_swap) | |
480 | { | |
481 | register struct window *w; | |
727e958e MR |
482 | struct frame *sf; |
483 | ||
484 | CHECK_LIVE_WINDOW (window); | |
485 | ||
486 | w = XWINDOW (window); | |
487 | w->frozen_window_start_p = 0; | |
488 | ||
489 | if (NILP (norecord)) | |
490 | { | |
45942c7d | 491 | w->use_time = ++window_select_count; |
d3d50620 | 492 | record_buffer (w->buffer); |
727e958e MR |
493 | } |
494 | ||
734fbd86 MR |
495 | /* Make the selected window's buffer current. */ |
496 | Fset_buffer (w->buffer); | |
497 | ||
727e958e MR |
498 | if (EQ (window, selected_window) && !inhibit_point_swap) |
499 | return window; | |
500 | ||
501 | sf = SELECTED_FRAME (); | |
502 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
503 | { | |
f00af5b1 | 504 | fset_selected_window (XFRAME (WINDOW_FRAME (w)), window); |
727e958e MR |
505 | /* Use this rather than Fhandle_switch_frame |
506 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
507 | move around in the state where a minibuffer in a separate | |
508 | frame is active. */ | |
509 | Fselect_frame (WINDOW_FRAME (w), norecord); | |
510 | /* Fselect_frame called us back so we've done all the work already. */ | |
511 | eassert (EQ (window, selected_window)); | |
512 | return window; | |
513 | } | |
514 | else | |
f00af5b1 | 515 | fset_selected_window (sf, window); |
727e958e | 516 | |
1e101a4b SM |
517 | select_window_1 (window, inhibit_point_swap); |
518 | ||
519 | bset_last_selected_window (XBUFFER (w->buffer), window); | |
520 | windows_or_buffers_changed++; | |
521 | return window; | |
522 | } | |
523 | ||
524 | /* Select window with a minimum of fuss, i.e. don't record the change anywhere | |
3f781c75 | 525 | (not even for redisplay's benefit), and assume that the window's frame is |
1e101a4b | 526 | already selected. */ |
12384b01 | 527 | static void |
1e101a4b SM |
528 | select_window_1 (Lisp_Object window, bool inhibit_point_swap) |
529 | { | |
734fbd86 MR |
530 | /* Store the old selected window's buffer's point in pointm of the old |
531 | selected window. It belongs to that window, and when the window is | |
532 | not selected, must be in the window. */ | |
727e958e MR |
533 | if (!inhibit_point_swap) |
534 | { | |
1e101a4b | 535 | struct window *ow = XWINDOW (selected_window); |
d3d50620 DA |
536 | if (! NILP (ow->buffer)) |
537 | set_marker_both (ow->pointm, ow->buffer, | |
538 | BUF_PT (XBUFFER (ow->buffer)), | |
539 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
727e958e MR |
540 | } |
541 | ||
542 | selected_window = window; | |
727e958e MR |
543 | |
544 | /* Go to the point recorded in the window. | |
545 | This is important when the buffer is in more | |
546 | than one window. It also matters when | |
547 | redisplay_window has altered point after scrolling, | |
548 | because it makes the change only in the window. */ | |
549 | { | |
1e101a4b | 550 | register ptrdiff_t new_point = marker_position (XWINDOW (window)->pointm); |
727e958e MR |
551 | if (new_point < BEGV) |
552 | SET_PT (BEGV); | |
553 | else if (new_point > ZV) | |
554 | SET_PT (ZV); | |
555 | else | |
556 | SET_PT (new_point); | |
557 | } | |
727e958e MR |
558 | } |
559 | ||
560 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, | |
94900bfe MR |
561 | doc: /* Select WINDOW which must be a live window. |
562 | Also make WINDOW's frame the selected frame and WINDOW that frame's | |
563 | selected window. In addition, make WINDOW's buffer current and set that | |
564 | buffer's value of `point' to the value of WINDOW's `window-point'. | |
565 | Return WINDOW. | |
727e958e MR |
566 | |
567 | Optional second arg NORECORD non-nil means do not put this buffer at the | |
568 | front of the buffer list and do not make this window the most recently | |
569 | selected one. | |
605be8af | 570 | |
727e958e MR |
571 | Note that the main editor command loop sets the current buffer to the |
572 | buffer of the selected window before each command. */) | |
573 | (register Lisp_Object window, Lisp_Object norecord) | |
574 | { | |
575 | return select_window (window, norecord, 0); | |
576 | } | |
577 | \f | |
bf60a96b | 578 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
49745b39 CY |
579 | doc: /* Return the buffer displayed in window WINDOW. |
580 | If WINDOW is omitted or nil, it defaults to the selected window. | |
581 | Return nil for an internal window or a deleted window. */) | |
bf60a96b MR |
582 | (Lisp_Object window) |
583 | { | |
d3d50620 | 584 | return decode_any_window (window)->buffer; |
bf60a96b MR |
585 | } |
586 | ||
587 | DEFUN ("window-parent", Fwindow_parent, Swindow_parent, 0, 1, 0, | |
49745b39 | 588 | doc: /* Return the parent window of window WINDOW. |
52162052 | 589 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 | 590 | Return nil for a window with no parent (e.g. a root window). */) |
bf60a96b MR |
591 | (Lisp_Object window) |
592 | { | |
52162052 | 593 | return decode_valid_window (window)->parent; |
bf60a96b MR |
594 | } |
595 | ||
89bc0592 | 596 | DEFUN ("window-top-child", Fwindow_top_child, Swindow_top_child, 0, 1, 0, |
49745b39 | 597 | doc: /* Return the topmost child window of window WINDOW. |
52162052 | 598 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 CY |
599 | Return nil if WINDOW is a live window (live windows have no children). |
600 | Return nil if WINDOW is an internal window whose children form a | |
601 | horizontal combination. */) | |
bf60a96b MR |
602 | (Lisp_Object window) |
603 | { | |
52162052 | 604 | return decode_valid_window (window)->vchild; |
bf60a96b MR |
605 | } |
606 | ||
89bc0592 | 607 | DEFUN ("window-left-child", Fwindow_left_child, Swindow_left_child, 0, 1, 0, |
49745b39 | 608 | doc: /* Return the leftmost child window of window WINDOW. |
52162052 | 609 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 CY |
610 | Return nil if WINDOW is a live window (live windows have no children). |
611 | Return nil if WINDOW is an internal window whose children form a | |
612 | vertical combination. */) | |
bf60a96b MR |
613 | (Lisp_Object window) |
614 | { | |
52162052 | 615 | return decode_valid_window (window)->hchild; |
bf60a96b MR |
616 | } |
617 | ||
d68443dc | 618 | DEFUN ("window-next-sibling", Fwindow_next_sibling, Swindow_next_sibling, 0, 1, 0, |
49745b39 | 619 | doc: /* Return the next sibling window of window WINDOW. |
52162052 | 620 | WINDOW must be a valid window and defaults to the selected one. |
d68443dc | 621 | Return nil if WINDOW has no next sibling. */) |
bf60a96b MR |
622 | (Lisp_Object window) |
623 | { | |
52162052 | 624 | return decode_valid_window (window)->next; |
bf60a96b MR |
625 | } |
626 | ||
d68443dc | 627 | DEFUN ("window-prev-sibling", Fwindow_prev_sibling, Swindow_prev_sibling, 0, 1, 0, |
49745b39 | 628 | doc: /* Return the previous sibling window of window WINDOW. |
52162052 | 629 | WINDOW must be a valid window and defaults to the selected one. |
d68443dc | 630 | Return nil if WINDOW has no previous sibling. */) |
bf60a96b MR |
631 | (Lisp_Object window) |
632 | { | |
52162052 | 633 | return decode_valid_window (window)->prev; |
bf60a96b | 634 | } |
67492200 | 635 | |
72f94d4b | 636 | DEFUN ("window-combination-limit", Fwindow_combination_limit, Swindow_combination_limit, 1, 1, 0, |
b6f67890 | 637 | doc: /* Return combination limit of window WINDOW. |
be7f5545 | 638 | If the return value is nil, child windows of WINDOW can be recombined with |
b6f67890 | 639 | WINDOW's siblings. A return value of t means that child windows of |
72f94d4b DA |
640 | WINDOW are never \(re-)combined with WINDOW's siblings. |
641 | ||
642 | WINDOW must be a valid window. The return value is meaningful for | |
643 | internal windows only. */) | |
496e208e | 644 | (Lisp_Object window) |
7ab12479 | 645 | { |
72f94d4b DA |
646 | CHECK_VALID_WINDOW (window); |
647 | return XWINDOW (window)->combination_limit; | |
7ab12479 | 648 | } |
53bb6b99 | 649 | |
b6f67890 | 650 | DEFUN ("set-window-combination-limit", Fset_window_combination_limit, Sset_window_combination_limit, 2, 2, 0, |
d2999b1a | 651 | doc: /* Set combination limit of window WINDOW to LIMIT; return LIMIT. |
8e17c9ba MR |
652 | If LIMIT is nil, child windows of WINDOW can be recombined with WINDOW's |
653 | siblings. LIMIT t means that child windows of WINDOW are never | |
654 | \(re-)combined with WINDOW's siblings. Other values are reserved for | |
fdaf534a MR |
655 | future use. |
656 | ||
657 | WINDOW must be a valid window. Setting the combination limit is | |
658 | meaningful for internal windows only. */) | |
d2999b1a | 659 | (Lisp_Object window, Lisp_Object limit) |
b3a10345 | 660 | { |
e8c17b81 PE |
661 | wset_combination_limit (decode_valid_window (window), limit); |
662 | return limit; | |
496e208e | 663 | } |
7bbc67d2 | 664 | |
496e208e | 665 | DEFUN ("window-use-time", Fwindow_use_time, Swindow_use_time, 0, 1, 0, |
49745b39 | 666 | doc: /* Return the use time of window WINDOW. |
52162052 | 667 | WINDOW must be a live window and defaults to the selected one. |
49745b39 CY |
668 | The window with the highest use time is the most recently selected |
669 | one. The window with the lowest use time is the least recently | |
670 | selected one. */) | |
496e208e MR |
671 | (Lisp_Object window) |
672 | { | |
52162052 | 673 | return make_number (decode_live_window (window)->use_time); |
496e208e | 674 | } |
abde8f8c | 675 | \f |
105216ed CY |
676 | DEFUN ("window-total-height", Fwindow_total_height, Swindow_total_height, 0, 1, 0, |
677 | doc: /* Return the total height, in lines, of window WINDOW. | |
52162052 | 678 | WINDOW must be a valid window and defaults to the selected one. |
b3a10345 | 679 | |
105216ed CY |
680 | The return value includes the mode line and header line, if any. |
681 | If WINDOW is an internal window, the total height is the height | |
682 | of the screen areas spanned by its children. | |
536833ab | 683 | |
105216ed CY |
684 | On a graphical display, this total height is reported as an |
685 | integer multiple of the default character height. */) | |
686 | (Lisp_Object window) | |
496e208e | 687 | { |
52162052 | 688 | return decode_valid_window (window)->total_lines; |
105216ed | 689 | } |
536833ab | 690 | |
105216ed CY |
691 | DEFUN ("window-total-width", Fwindow_total_width, Swindow_total_width, 0, 1, 0, |
692 | doc: /* Return the total width, in columns, of window WINDOW. | |
52162052 | 693 | WINDOW must be a valid window and defaults to the selected one. |
b3a10345 | 694 | |
105216ed CY |
695 | The return value includes any vertical dividers or scroll bars |
696 | belonging to WINDOW. If WINDOW is an internal window, the total width | |
697 | is the width of the screen areas spanned by its children. | |
b3a10345 | 698 | |
105216ed CY |
699 | On a graphical display, this total width is reported as an |
700 | integer multiple of the default character width. */) | |
496e208e MR |
701 | (Lisp_Object window) |
702 | { | |
52162052 | 703 | return decode_valid_window (window)->total_cols; |
abde8f8c | 704 | } |
b3a10345 | 705 | |
496e208e | 706 | DEFUN ("window-new-total", Fwindow_new_total, Swindow_new_total, 0, 1, 0, |
49745b39 | 707 | doc: /* Return the new total size of window WINDOW. |
52162052 | 708 | WINDOW must be a valid window and defaults to the selected one. */) |
496e208e MR |
709 | (Lisp_Object window) |
710 | { | |
52162052 | 711 | return decode_valid_window (window)->new_total; |
496e208e MR |
712 | } |
713 | ||
714 | DEFUN ("window-normal-size", Fwindow_normal_size, Swindow_normal_size, 0, 2, 0, | |
49745b39 | 715 | doc: /* Return the normal height of window WINDOW. |
52162052 | 716 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 | 717 | If HORIZONTAL is non-nil, return the normal width of WINDOW. */) |
496e208e MR |
718 | (Lisp_Object window, Lisp_Object horizontal) |
719 | { | |
52162052 | 720 | struct window *w = decode_valid_window (window); |
d3d50620 DA |
721 | |
722 | return NILP (horizontal) ? w->normal_lines : w->normal_cols; | |
496e208e MR |
723 | } |
724 | ||
725 | DEFUN ("window-new-normal", Fwindow_new_normal, Swindow_new_normal, 0, 1, 0, | |
49745b39 | 726 | doc: /* Return new normal size of window WINDOW. |
52162052 | 727 | WINDOW must be a valid window and defaults to the selected one. */) |
496e208e MR |
728 | (Lisp_Object window) |
729 | { | |
52162052 | 730 | return decode_valid_window (window)->new_normal; |
496e208e MR |
731 | } |
732 | ||
abde8f8c | 733 | DEFUN ("window-left-column", Fwindow_left_column, Swindow_left_column, 0, 1, 0, |
49745b39 | 734 | doc: /* Return left column of window WINDOW. |
105216ed CY |
735 | This is the distance, in columns, between the left edge of WINDOW and |
736 | the left edge of the frame's window area. For instance, the return | |
737 | value is 0 if there is no window to the left of WINDOW. | |
738 | ||
52162052 | 739 | WINDOW must be a valid window and defaults to the selected one. */) |
abde8f8c MR |
740 | (Lisp_Object window) |
741 | { | |
52162052 | 742 | return decode_valid_window (window)->left_col; |
abde8f8c MR |
743 | } |
744 | ||
745 | DEFUN ("window-top-line", Fwindow_top_line, Swindow_top_line, 0, 1, 0, | |
49745b39 | 746 | doc: /* Return top line of window WINDOW. |
105216ed CY |
747 | This is the distance, in lines, between the top of WINDOW and the top |
748 | of the frame's window area. For instance, the return value is 0 if | |
749 | there is no window above WINDOW. | |
750 | ||
52162052 | 751 | WINDOW must be a valid window and defaults to the selected one. */) |
abde8f8c MR |
752 | (Lisp_Object window) |
753 | { | |
52162052 | 754 | return decode_valid_window (window)->top_line; |
abde8f8c MR |
755 | } |
756 | ||
757 | /* Return the number of lines of W's body. Don't count any mode or | |
758 | header line of W. */ | |
759 | ||
46a4ce9e | 760 | static int |
abde8f8c MR |
761 | window_body_lines (struct window *w) |
762 | { | |
d3d50620 | 763 | int height = XFASTINT (w->total_lines); |
abde8f8c MR |
764 | |
765 | if (!MINI_WINDOW_P (w)) | |
766 | { | |
767 | if (WINDOW_WANTS_MODELINE_P (w)) | |
768 | --height; | |
769 | if (WINDOW_WANTS_HEADER_LINE_P (w)) | |
770 | --height; | |
771 | } | |
772 | ||
773 | return height; | |
774 | } | |
775 | ||
776 | /* Return the number of columns of W's body. Don't count columns | |
777 | occupied by the scroll bar or the vertical bar separating W from its | |
778 | right sibling. On window-systems don't count fringes or display | |
779 | margins either. */ | |
780 | ||
781 | int | |
782 | window_body_cols (struct window *w) | |
783 | { | |
784 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
d3d50620 | 785 | int width = XINT (w->total_cols); |
abde8f8c MR |
786 | |
787 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) | |
788 | /* Scroll bars occupy a few columns. */ | |
789 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); | |
790 | else if (!FRAME_WINDOW_P (f) | |
791 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
792 | /* The column of `|' characters separating side-by-side windows | |
793 | occupies one column only. */ | |
794 | width -= 1; | |
795 | ||
f1665bdc EZ |
796 | /* Display margins cannot be used for normal text. */ |
797 | width -= WINDOW_LEFT_MARGIN_COLS (w) + WINDOW_RIGHT_MARGIN_COLS (w); | |
798 | ||
abde8f8c | 799 | if (FRAME_WINDOW_P (f)) |
f1665bdc EZ |
800 | /* On window-systems, fringes cannot be used for normal text. */ |
801 | width -= WINDOW_FRINGE_COLS (w); | |
abde8f8c MR |
802 | |
803 | return width; | |
804 | } | |
805 | ||
105216ed CY |
806 | DEFUN ("window-body-height", Fwindow_body_height, Swindow_body_height, 0, 1, 0, |
807 | doc: /* Return the height, in lines, of WINDOW's text area. | |
52162052 | 808 | WINDOW must be a live window and defaults to the selected one. |
89bd5ee1 | 809 | |
105216ed CY |
810 | The returned height does not include the mode line or header line. |
811 | On a graphical display, the height is expressed as an integer multiple | |
812 | of the default character height. If a line at the bottom of the text | |
813 | area is only partially visible, that counts as a whole line; to | |
814 | exclude partially-visible lines, use `window-text-height'. */) | |
815 | (Lisp_Object window) | |
abde8f8c | 816 | { |
b6a9e8b1 | 817 | return make_number (window_body_lines (decode_live_window (window))); |
105216ed | 818 | } |
abde8f8c | 819 | |
105216ed CY |
820 | DEFUN ("window-body-width", Fwindow_body_width, Swindow_body_width, 0, 1, 0, |
821 | doc: /* Return the width, in columns, of WINDOW's text area. | |
52162052 | 822 | WINDOW must be a live window and defaults to the selected one. |
105216ed CY |
823 | |
824 | The return value does not include any vertical dividers, fringe or | |
825 | marginal areas, or scroll bars. On a graphical display, the width is | |
826 | expressed as an integer multiple of the default character width. */) | |
827 | (Lisp_Object window) | |
828 | { | |
b6a9e8b1 | 829 | return make_number (window_body_cols (decode_live_window (window))); |
abde8f8c | 830 | } |
536833ab | 831 | |
7ab12479 | 832 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 | 833 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
496e208e | 834 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 835 | (Lisp_Object window) |
7ab12479 | 836 | { |
52162052 | 837 | return make_number (decode_live_window (window)->hscroll); |
7ab12479 JB |
838 | } |
839 | ||
24a212eb PE |
840 | /* Set W's horizontal scroll amount to HSCROLL clipped to a reasonable |
841 | range, returning the new amount as a fixnum. */ | |
842 | static Lisp_Object | |
843 | set_window_hscroll (struct window *w, EMACS_INT hscroll) | |
844 | { | |
4e71fd89 PE |
845 | /* Horizontal scrolling has problems with large scroll amounts. |
846 | It's too slow with long lines, and even with small lines the | |
847 | display can be messed up. For now, though, impose only the limits | |
848 | required by the internal representation: horizontal scrolling must | |
849 | fit in fixnum (since it's visible to Elisp) and into ptrdiff_t | |
850 | (since it's stored in a ptrdiff_t). */ | |
851 | ptrdiff_t hscroll_max = min (MOST_POSITIVE_FIXNUM, PTRDIFF_MAX); | |
852 | ptrdiff_t new_hscroll = clip_to_bounds (0, hscroll, hscroll_max); | |
24a212eb PE |
853 | |
854 | /* Prevent redisplay shortcuts when changing the hscroll. */ | |
855 | if (w->hscroll != new_hscroll) | |
d3d50620 | 856 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
24a212eb PE |
857 | |
858 | w->hscroll = new_hscroll; | |
859 | return make_number (new_hscroll); | |
860 | } | |
861 | ||
7ab12479 | 862 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, |
fdb82f93 | 863 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
52162052 | 864 | WINDOW must be a live window and defaults to the selected one. |
24a212eb PE |
865 | Clip the number to a reasonable value if out of range. |
866 | Return the new number. NCOL should be zero or positive. | |
ebadb1e4 EZ |
867 | |
868 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 869 | window so that the location of point moves off-window. */) |
5842a27b | 870 | (Lisp_Object window, Lisp_Object ncol) |
7ab12479 | 871 | { |
b7826503 | 872 | CHECK_NUMBER (ncol); |
89bc0592 | 873 | return set_window_hscroll (decode_live_window (window), XINT (ncol)); |
7ab12479 JB |
874 | } |
875 | ||
190eb263 RS |
876 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
877 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 878 | doc: /* Return WINDOW's redisplay end trigger value. |
52162052 | 879 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 880 | See `set-window-redisplay-end-trigger' for more information. */) |
5842a27b | 881 | (Lisp_Object window) |
190eb263 | 882 | { |
52162052 | 883 | return decode_live_window (window)->redisplay_end_trigger; |
190eb263 RS |
884 | } |
885 | ||
886 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
887 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 | 888 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
52162052 MR |
889 | WINDOW must be a live window and defaults to the selected one. VALUE |
890 | should be a buffer position (typically a marker) or nil. If it is a | |
891 | buffer position, then if redisplay in WINDOW reaches a position beyond | |
892 | VALUE, the functions in `redisplay-end-trigger-functions' are called | |
893 | with two arguments: WINDOW, and the end trigger value. Afterwards the | |
894 | end-trigger value is reset to nil. */) | |
5842a27b | 895 | (register Lisp_Object window, Lisp_Object value) |
190eb263 | 896 | { |
e8c17b81 PE |
897 | wset_redisplay_end_trigger (decode_live_window (window), value); |
898 | return value; | |
190eb263 RS |
899 | } |
900 | ||
7ab12479 | 901 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 | 902 | doc: /* Return a list of the edge coordinates of WINDOW. |
52162052 MR |
903 | WINDOW must be a valid window and defaults to the selected one. |
904 | ||
905 | The returned list has the form (LEFT TOP RIGHT BOTTOM). TOP and BOTTOM | |
906 | count by lines, and LEFT and RIGHT count by columns, all relative to 0, | |
907 | 0 at top left corner of frame. | |
908 | ||
909 | RIGHT is one more than the rightmost column occupied by WINDOW. BOTTOM | |
910 | is one more than the bottommost row occupied by WINDOW. The edges | |
911 | include the space used by WINDOW's scroll bar, display margins, fringes, | |
912 | header line, and/or mode line. For the edges of just the text area, use | |
913 | `window-inside-edges'. */) | |
5842a27b | 914 | (Lisp_Object window) |
7ab12479 | 915 | { |
52162052 | 916 | register struct window *w = decode_valid_window (window); |
7ab12479 | 917 | |
1479c557 PE |
918 | return list4i (WINDOW_LEFT_EDGE_COL (w), WINDOW_TOP_EDGE_LINE (w), |
919 | WINDOW_RIGHT_EDGE_COL (w), WINDOW_BOTTOM_EDGE_LINE (w)); | |
7ab12479 JB |
920 | } |
921 | ||
c99a9eb3 RS |
922 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
923 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
52162052 MR |
924 | WINDOW must be a valid window and defaults to the selected one. |
925 | ||
926 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
927 | 0, 0 at the top left corner of the frame. | |
b35ac83e CY |
928 | |
929 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
930 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
931 | The pixel edges include the space used by WINDOW's scroll bar, display | |
932 | margins, fringes, header line, and/or mode line. For the pixel edges | |
933 | of just the text area, use `window-inside-pixel-edges'. */) | |
5842a27b | 934 | (Lisp_Object window) |
c99a9eb3 | 935 | { |
52162052 | 936 | register struct window *w = decode_valid_window (window); |
c99a9eb3 | 937 | |
1479c557 PE |
938 | return list4i (WINDOW_LEFT_EDGE_X (w), WINDOW_TOP_EDGE_Y (w), |
939 | WINDOW_RIGHT_EDGE_X (w), WINDOW_BOTTOM_EDGE_Y (w)); | |
c99a9eb3 RS |
940 | } |
941 | ||
9d5405ec | 942 | static void |
5e617bc2 | 943 | calc_absolute_offset (struct window *w, int *add_x, int *add_y) |
9d5405ec | 944 | { |
d3d50620 | 945 | struct frame *f = XFRAME (w->frame); |
9d5405ec J |
946 | *add_y = f->top_pos; |
947 | #ifdef FRAME_MENUBAR_HEIGHT | |
948 | *add_y += FRAME_MENUBAR_HEIGHT (f); | |
949 | #endif | |
bfeabdc3 JD |
950 | #ifdef FRAME_TOOLBAR_TOP_HEIGHT |
951 | *add_y += FRAME_TOOLBAR_TOP_HEIGHT (f); | |
952 | #elif FRAME_TOOLBAR_HEIGHT | |
9d5405ec J |
953 | *add_y += FRAME_TOOLBAR_HEIGHT (f); |
954 | #endif | |
955 | #ifdef FRAME_NS_TITLEBAR_HEIGHT | |
956 | *add_y += FRAME_NS_TITLEBAR_HEIGHT (f); | |
957 | #endif | |
958 | *add_x = f->left_pos; | |
bfeabdc3 JD |
959 | #ifdef FRAME_TOOLBAR_LEFT_WIDTH |
960 | *add_x += FRAME_TOOLBAR_LEFT_WIDTH (f); | |
961 | #endif | |
9d5405ec J |
962 | } |
963 | ||
964 | DEFUN ("window-absolute-pixel-edges", Fwindow_absolute_pixel_edges, | |
965 | Swindow_absolute_pixel_edges, 0, 1, 0, | |
966 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
52162052 MR |
967 | WINDOW must be a valid window and defaults to the selected one. |
968 | ||
969 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
970 | 0, 0 at the top left corner of the display. | |
9d5405ec J |
971 | |
972 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
973 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
974 | The pixel edges include the space used by WINDOW's scroll bar, display | |
975 | margins, fringes, header line, and/or mode line. For the pixel edges | |
c49d071a | 976 | of just the text area, use `window-inside-absolute-pixel-edges'. */) |
5842a27b | 977 | (Lisp_Object window) |
9d5405ec | 978 | { |
52162052 | 979 | register struct window *w = decode_valid_window (window); |
9d5405ec | 980 | int add_x, add_y; |
89bc0592 | 981 | |
ed3751c8 | 982 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec | 983 | |
1479c557 PE |
984 | return list4i (WINDOW_LEFT_EDGE_X (w) + add_x, |
985 | WINDOW_TOP_EDGE_Y (w) + add_y, | |
986 | WINDOW_RIGHT_EDGE_X (w) + add_x, | |
987 | WINDOW_BOTTOM_EDGE_Y (w) + add_y); | |
9d5405ec J |
988 | } |
989 | ||
c99a9eb3 RS |
990 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, |
991 | doc: /* Return a list of the edge coordinates of WINDOW. | |
52162052 MR |
992 | WINDOW must be a live window and defaults to the selected one. |
993 | ||
994 | The returned list has the form (LEFT TOP RIGHT BOTTOM). TOP and BOTTOM | |
995 | count by lines, and LEFT and RIGHT count by columns, all relative to 0, | |
996 | 0 at top left corner of frame. | |
b35ac83e CY |
997 | |
998 | RIGHT is one more than the rightmost column of WINDOW's text area. | |
52162052 MR |
999 | BOTTOM is one more than the bottommost row of WINDOW's text area. The |
1000 | inside edges do not include the space used by the WINDOW's scroll bar, | |
1001 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 1002 | (Lisp_Object window) |
c99a9eb3 | 1003 | { |
52162052 | 1004 | register struct window *w = decode_live_window (window); |
c99a9eb3 | 1005 | |
1479c557 PE |
1006 | return list4i ((WINDOW_BOX_LEFT_EDGE_COL (w) |
1007 | + WINDOW_LEFT_MARGIN_COLS (w) | |
1008 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
1009 | (WINDOW_TOP_EDGE_LINE (w) | |
1010 | + WINDOW_HEADER_LINE_LINES (w)), | |
1011 | (WINDOW_BOX_RIGHT_EDGE_COL (w) | |
1012 | - WINDOW_RIGHT_MARGIN_COLS (w) | |
1013 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
1014 | (WINDOW_BOTTOM_EDGE_LINE (w) | |
1015 | - WINDOW_MODE_LINE_LINES (w))); | |
c99a9eb3 RS |
1016 | } |
1017 | ||
1018 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
2fbdc249 | 1019 | doc: /* Return a list of the edge pixel coordinates of WINDOW's text area. |
52162052 MR |
1020 | WINDOW must be a live window and defaults to the selected one. |
1021 | ||
1022 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
1023 | (0,0) at the top left corner of the frame's window area. | |
b35ac83e CY |
1024 | |
1025 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
1026 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
1027 | The inside edges do not include the space used by WINDOW's scroll bar, | |
c99a9eb3 | 1028 | display margins, fringes, header line, and/or mode line. */) |
5842a27b | 1029 | (Lisp_Object window) |
c99a9eb3 | 1030 | { |
52162052 | 1031 | register struct window *w = decode_live_window (window); |
c99a9eb3 | 1032 | |
1479c557 PE |
1033 | return list4i ((WINDOW_BOX_LEFT_EDGE_X (w) |
1034 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
1035 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
1036 | (WINDOW_TOP_EDGE_Y (w) | |
1037 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
1038 | (WINDOW_BOX_RIGHT_EDGE_X (w) | |
1039 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
1040 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
1041 | (WINDOW_BOTTOM_EDGE_Y (w) | |
1042 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
c99a9eb3 RS |
1043 | } |
1044 | ||
9d5405ec J |
1045 | DEFUN ("window-inside-absolute-pixel-edges", |
1046 | Fwindow_inside_absolute_pixel_edges, | |
1047 | Swindow_inside_absolute_pixel_edges, 0, 1, 0, | |
2fbdc249 | 1048 | doc: /* Return a list of the edge pixel coordinates of WINDOW's text area. |
52162052 MR |
1049 | WINDOW must be a live window and defaults to the selected one. |
1050 | ||
1051 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
1052 | (0,0) at the top left corner of the frame's window area. | |
9d5405ec J |
1053 | |
1054 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
1055 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
1056 | The inside edges do not include the space used by WINDOW's scroll bar, | |
1057 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 1058 | (Lisp_Object window) |
9d5405ec | 1059 | { |
52162052 | 1060 | register struct window *w = decode_live_window (window); |
9d5405ec | 1061 | int add_x, add_y; |
89bc0592 | 1062 | |
ed3751c8 | 1063 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec | 1064 | |
1479c557 PE |
1065 | return list4i ((WINDOW_BOX_LEFT_EDGE_X (w) |
1066 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
1067 | + WINDOW_LEFT_FRINGE_WIDTH (w) + add_x), | |
1068 | (WINDOW_TOP_EDGE_Y (w) | |
1069 | + WINDOW_HEADER_LINE_HEIGHT (w) + add_y), | |
1070 | (WINDOW_BOX_RIGHT_EDGE_X (w) | |
1071 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
1072 | - WINDOW_RIGHT_FRINGE_WIDTH (w) + add_x), | |
1073 | (WINDOW_BOTTOM_EDGE_Y (w) | |
1074 | - WINDOW_MODE_LINE_HEIGHT (w) + add_y)); | |
9d5405ec J |
1075 | } |
1076 | ||
9173a8fb | 1077 | /* Test if the character at column X, row Y is within window W. |
341f3858 | 1078 | If it is not, return ON_NOTHING; |
9173a8fb | 1079 | if it is in the window's text area, return ON_TEXT; |
341f3858 | 1080 | if it is on the window's modeline, return ON_MODE_LINE; |
d5783c40 | 1081 | if it is on the border between the window and its right sibling, |
341f3858 | 1082 | return ON_VERTICAL_BORDER. |
9173a8fb | 1083 | if it is on a scroll bar, return ON_SCROLL_BAR. |
341f3858 | 1084 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 1085 | if it is in left or right fringe of the window, |
9173a8fb | 1086 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE; |
49b996e7 | 1087 | if it is in the marginal area to the left/right of the window, |
9173a8fb | 1088 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN. |
5500c422 GM |
1089 | |
1090 | X and Y are frame relative pixel coordinates. */ | |
1091 | ||
7442878f | 1092 | static enum window_part |
9173a8fb | 1093 | coordinates_in_window (register struct window *w, int x, int y) |
d5783c40 | 1094 | { |
b0228ace | 1095 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
7442878f | 1096 | enum window_part part; |
949cf20f | 1097 | int ux = FRAME_COLUMN_WIDTH (f); |
c7b08b0d MR |
1098 | int left_x = WINDOW_LEFT_EDGE_X (w); |
1099 | int right_x = WINDOW_RIGHT_EDGE_X (w); | |
1100 | int top_y = WINDOW_TOP_EDGE_Y (w); | |
1101 | int bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
dad75588 GM |
1102 | /* The width of the area where the vertical line can be dragged. |
1103 | (Between mode lines for instance. */ | |
1104 | int grabbable_width = ux; | |
949cf20f | 1105 | int lmargin_width, rmargin_width, text_left, text_right; |
9173a8fb | 1106 | |
c7b08b0d MR |
1107 | /* Outside any interesting row or column? */ |
1108 | if (y < top_y || y >= bottom_y || x < left_x || x >= right_x) | |
9173a8fb | 1109 | return ON_NOTHING; |
b0228ace | 1110 | |
c7b08b0d MR |
1111 | /* On the mode line or header line? */ |
1112 | if ((WINDOW_WANTS_MODELINE_P (w) | |
1113 | && y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w) | |
1114 | && (part = ON_MODE_LINE)) | |
1115 | || (WINDOW_WANTS_HEADER_LINE_P (w) | |
1116 | && y < top_y + CURRENT_HEADER_LINE_HEIGHT (w) | |
1117 | && (part = ON_HEADER_LINE))) | |
1118 | { | |
1119 | /* If it's under/over the scroll bar portion of the mode/header | |
1120 | line, say it's on the vertical line. That's to be able to | |
1121 | resize windows horizontally in case we're using toolkit scroll | |
1122 | bars. Note: If scrollbars are on the left, the window that | |
1123 | must be eventually resized is that on the left of WINDOW. */ | |
1124 | if ((WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) | |
1125 | && !WINDOW_LEFTMOST_P (w) | |
1126 | && eabs (x - left_x) < grabbable_width) | |
1127 | || (!WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) | |
1128 | && !WINDOW_RIGHTMOST_P (w) | |
1129 | && eabs (x - right_x) < grabbable_width)) | |
1130 | return ON_VERTICAL_BORDER; | |
1131 | else | |
1132 | return part; | |
1133 | } | |
1134 | ||
466539bc EZ |
1135 | /* In what's below, we subtract 1 when computing right_x because we |
1136 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
1137 | if (w->pseudo_window_p) |
1138 | { | |
1139 | left_x = 0; | |
949cf20f | 1140 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
5500c422 GM |
1141 | } |
1142 | else | |
1143 | { | |
949cf20f KS |
1144 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
1145 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
5500c422 | 1146 | } |
37962e60 | 1147 | |
949cf20f | 1148 | /* Outside any interesting column? */ |
9173a8fb CY |
1149 | if (x < left_x || x > right_x) |
1150 | return ON_SCROLL_BAR; | |
949cf20f KS |
1151 | |
1152 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
1153 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 1154 | |
949cf20f KS |
1155 | text_left = window_box_left (w, TEXT_AREA); |
1156 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
1157 | ||
1158 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 1159 | { |
447e9da0 | 1160 | if (!w->pseudo_window_p |
949cf20f | 1161 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 1162 | && !WINDOW_RIGHTMOST_P (w) |
9173a8fb CY |
1163 | && (eabs (x - right_x) < grabbable_width)) |
1164 | return ON_VERTICAL_BORDER; | |
fbad6f9a | 1165 | } |
9173a8fb CY |
1166 | /* Need to say "x > right_x" rather than >=, since on character |
1167 | terminals, the vertical line's x coordinate is right_x. */ | |
1168 | else if (!w->pseudo_window_p | |
1169 | && !WINDOW_RIGHTMOST_P (w) | |
1170 | && x > right_x - ux) | |
1171 | return ON_VERTICAL_BORDER; | |
1172 | ||
1173 | if (x < text_left) | |
949cf20f KS |
1174 | { |
1175 | if (lmargin_width > 0 | |
1176 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1177 | ? (x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) |
1178 | : (x < left_x + lmargin_width))) | |
1179 | return ON_LEFT_MARGIN; | |
1180 | ||
949cf20f KS |
1181 | return ON_LEFT_FRINGE; |
1182 | } | |
1183 | ||
9173a8fb | 1184 | if (x >= text_right) |
949cf20f KS |
1185 | { |
1186 | if (rmargin_width > 0 | |
1187 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1188 | ? (x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) |
1189 | : (x >= right_x - rmargin_width))) | |
1190 | return ON_RIGHT_MARGIN; | |
1191 | ||
949cf20f KS |
1192 | return ON_RIGHT_FRINGE; |
1193 | } | |
1194 | ||
1195 | /* Everything special ruled out - must be on text area */ | |
949cf20f | 1196 | return ON_TEXT; |
d5783c40 JB |
1197 | } |
1198 | ||
9173a8fb CY |
1199 | /* Take X is the frame-relative pixel x-coordinate, and return the |
1200 | x-coordinate relative to part PART of window W. */ | |
1201 | int | |
1202 | window_relative_x_coord (struct window *w, enum window_part part, int x) | |
1203 | { | |
1204 | int left_x = (w->pseudo_window_p) ? 0 : WINDOW_BOX_LEFT_EDGE_X (w); | |
1205 | ||
1206 | switch (part) | |
1207 | { | |
1208 | case ON_TEXT: | |
1209 | return x - window_box_left (w, TEXT_AREA); | |
1210 | ||
1211 | case ON_LEFT_FRINGE: | |
1212 | return x - left_x; | |
1213 | ||
1214 | case ON_RIGHT_FRINGE: | |
1215 | return x - left_x - WINDOW_LEFT_FRINGE_WIDTH (w); | |
1216 | ||
1217 | case ON_LEFT_MARGIN: | |
1218 | return (x - left_x | |
1219 | - ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1220 | ? WINDOW_LEFT_FRINGE_WIDTH (w) : 0)); | |
1221 | ||
1222 | case ON_RIGHT_MARGIN: | |
1223 | return (x + 1 | |
1224 | - ((w->pseudo_window_p) | |
1225 | ? WINDOW_TOTAL_WIDTH (w) | |
1226 | : WINDOW_BOX_RIGHT_EDGE_X (w)) | |
1227 | + window_box_width (w, RIGHT_MARGIN_AREA) | |
1228 | + ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1229 | ? WINDOW_RIGHT_FRINGE_WIDTH (w) : 0)); | |
1230 | } | |
1231 | ||
1232 | /* ON_SCROLL_BAR, ON_NOTHING, and ON_VERTICAL_BORDER: */ | |
1233 | return 0; | |
1234 | } | |
1235 | ||
b0228ace | 1236 | |
d5783c40 | 1237 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
1238 | Scoordinates_in_window_p, 2, 2, 0, |
1239 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
52162052 | 1240 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1241 | COORDINATES is a cons of the form (X . Y), X and Y being distances |
1242 | measured in characters from the upper-left corner of the frame. | |
23fe745a | 1243 | \(0 . 0) denotes the character in the upper left corner of the |
fdb82f93 PJ |
1244 | frame. |
1245 | If COORDINATES are in the text portion of WINDOW, | |
1246 | the coordinates relative to the window are returned. | |
1247 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
1248 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
1249 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
1250 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 1251 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
1252 | `vertical-line' is returned. |
1253 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
1254 | or `right-margin' is returned. */) | |
5842a27b | 1255 | (register Lisp_Object coordinates, Lisp_Object window) |
d5783c40 | 1256 | { |
5500c422 GM |
1257 | struct window *w; |
1258 | struct frame *f; | |
d5783c40 | 1259 | int x, y; |
5500c422 | 1260 | Lisp_Object lx, ly; |
d5783c40 | 1261 | |
52162052 | 1262 | w = decode_live_window (window); |
d3d50620 | 1263 | f = XFRAME (w->frame); |
b7826503 | 1264 | CHECK_CONS (coordinates); |
5500c422 GM |
1265 | lx = Fcar (coordinates); |
1266 | ly = Fcdr (coordinates); | |
b7826503 PJ |
1267 | CHECK_NUMBER_OR_FLOAT (lx); |
1268 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
1269 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
1270 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 | 1271 | |
9173a8fb | 1272 | switch (coordinates_in_window (w, x, y)) |
d5783c40 | 1273 | { |
7442878f | 1274 | case ON_NOTHING: |
d5783c40 JB |
1275 | return Qnil; |
1276 | ||
7442878f | 1277 | case ON_TEXT: |
9173a8fb CY |
1278 | /* Convert X and Y to window relative pixel coordinates, and |
1279 | return the canonical char units. */ | |
1280 | x -= window_box_left (w, TEXT_AREA); | |
1281 | y -= WINDOW_TOP_EDGE_Y (w); | |
949cf20f KS |
1282 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
1283 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 1284 | |
7442878f | 1285 | case ON_MODE_LINE: |
d5783c40 | 1286 | return Qmode_line; |
37962e60 | 1287 | |
7442878f | 1288 | case ON_VERTICAL_BORDER: |
e5d77022 | 1289 | return Qvertical_line; |
d5783c40 | 1290 | |
7442878f | 1291 | case ON_HEADER_LINE: |
045dee35 | 1292 | return Qheader_line; |
5500c422 | 1293 | |
7442878f GM |
1294 | case ON_LEFT_FRINGE: |
1295 | return Qleft_fringe; | |
177c0ea7 | 1296 | |
7442878f GM |
1297 | case ON_RIGHT_FRINGE: |
1298 | return Qright_fringe; | |
fbad6f9a | 1299 | |
49b996e7 GM |
1300 | case ON_LEFT_MARGIN: |
1301 | return Qleft_margin; | |
177c0ea7 | 1302 | |
49b996e7 GM |
1303 | case ON_RIGHT_MARGIN: |
1304 | return Qright_margin; | |
1305 | ||
6487f669 RS |
1306 | case ON_SCROLL_BAR: |
1307 | /* Historically we are supposed to return nil in this case. */ | |
1308 | return Qnil; | |
1309 | ||
d5783c40 | 1310 | default: |
1088b922 | 1311 | emacs_abort (); |
d5783c40 JB |
1312 | } |
1313 | } | |
1314 | ||
67492200 GM |
1315 | |
1316 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
1317 | Check if window W contains coordinates specified by USER_DATA which |
1318 | is actually a pointer to a struct check_window_data CW. | |
1319 | ||
1320 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
1321 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 1322 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
1323 | zero from this function to stop iterating over windows. */ |
1324 | ||
1325 | struct check_window_data | |
1326 | { | |
1327 | Lisp_Object *window; | |
9173a8fb | 1328 | int x, y; |
341f3858 | 1329 | enum window_part *part; |
f95464e4 | 1330 | }; |
67492200 GM |
1331 | |
1332 | static int | |
971de7fb | 1333 | check_window_containing (struct window *w, void *user_data) |
67492200 | 1334 | { |
f95464e4 | 1335 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
1336 | enum window_part found; |
1337 | int continue_p = 1; | |
67492200 | 1338 | |
f95464e4 | 1339 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1340 | if (found != ON_NOTHING) |
67492200 | 1341 | { |
341f3858 | 1342 | *cw->part = found; |
f95464e4 | 1343 | XSETWINDOW (*cw->window, w); |
7442878f | 1344 | continue_p = 0; |
67492200 | 1345 | } |
177c0ea7 | 1346 | |
7442878f | 1347 | return continue_p; |
67492200 GM |
1348 | } |
1349 | ||
1350 | ||
5500c422 | 1351 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1352 | return it as a Lisp_Object. |
1353 | ||
1354 | If X, Y is on one of the window's special `window_part' elements, | |
9173a8fb | 1355 | set *PART to the id of that element. |
949cf20f | 1356 | |
341f3858 | 1357 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1358 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1359 | ||
1360 | This function was previously implemented with a loop cycling over | |
1361 | windows with Fnext_window, and starting with the frame's selected | |
1362 | window. It turned out that this doesn't work with an | |
1363 | implementation of next_window using Vwindow_list, because | |
1364 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1365 | tree of F when this function is called asynchronously from | |
1366 | note_mouse_highlight. The original loop didn't terminate in this | |
1367 | case. */ | |
5500c422 | 1368 | |
7ab12479 | 1369 | Lisp_Object |
9173a8fb | 1370 | window_from_coordinates (struct frame *f, int x, int y, |
748fa866 | 1371 | enum window_part *part, bool tool_bar_p) |
7ab12479 | 1372 | { |
67492200 | 1373 | Lisp_Object window; |
f95464e4 | 1374 | struct check_window_data cw; |
341f3858 KS |
1375 | enum window_part dummy; |
1376 | ||
1377 | if (part == 0) | |
1378 | part = &dummy; | |
5500c422 | 1379 | |
67492200 | 1380 | window = Qnil; |
9173a8fb | 1381 | cw.window = &window, cw.x = x, cw.y = y; cw.part = part; |
f95464e4 | 1382 | foreach_window (f, check_window_containing, &cw); |
177c0ea7 | 1383 | |
67492200 GM |
1384 | /* If not found above, see if it's in the tool bar window, if a tool |
1385 | bar exists. */ | |
1386 | if (NILP (window) | |
1387 | && tool_bar_p | |
e69b0960 DA |
1388 | && WINDOWP (f->tool_bar_window) |
1389 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 | |
1390 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), x, y) | |
7442878f | 1391 | != ON_NOTHING)) |
5500c422 | 1392 | { |
341f3858 | 1393 | *part = ON_TEXT; |
e69b0960 | 1394 | window = f->tool_bar_window; |
5500c422 | 1395 | } |
37962e60 | 1396 | |
67492200 | 1397 | return window; |
7ab12479 JB |
1398 | } |
1399 | ||
ab17c3f2 | 1400 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 | 1401 | doc: /* Return window containing coordinates X and Y on FRAME. |
496e208e | 1402 | FRAME must be a live frame and defaults to the selected one. |
fdb82f93 PJ |
1403 | The top left corner of the frame is considered to be row 0, |
1404 | column 0. */) | |
5842a27b | 1405 | (Lisp_Object x, Lisp_Object y, Lisp_Object frame) |
7ab12479 | 1406 | { |
d9f07150 | 1407 | struct frame *f = decode_live_frame (frame); |
7ab12479 | 1408 | |
5500c422 | 1409 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1410 | CHECK_NUMBER_OR_FLOAT (x); |
1411 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1412 | |
177c0ea7 | 1413 | return window_from_coordinates (f, |
2c77cf3b RS |
1414 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1415 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1416 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1417 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
9173a8fb | 1418 | 0, 0); |
7ab12479 JB |
1419 | } |
1420 | ||
1421 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1422 | doc: /* Return current value of point in WINDOW. |
496e208e | 1423 | WINDOW must be a live window and defaults to the selected one. |
c85322d0 | 1424 | |
5481664a MR |
1425 | For a nonselected window, this is the value point would have if that |
1426 | window were selected. | |
1427 | ||
1428 | Note that, when WINDOW is selected, the value returned is the same as | |
1429 | that returned by `point' for WINDOW's buffer. It would be more strictly | |
9fc9a531 | 1430 | correct to return the top-level value of `point', outside of any |
5481664a | 1431 | `save-excursion' forms. But that is hard to define. */) |
5842a27b | 1432 | (Lisp_Object window) |
7ab12479 | 1433 | { |
52162052 | 1434 | register struct window *w = decode_live_window (window); |
7ab12479 | 1435 | |
5481664a MR |
1436 | if (w == XWINDOW (selected_window)) |
1437 | return make_number (BUF_PT (XBUFFER (w->buffer))); | |
1438 | else | |
1439 | return Fmarker_position (w->pointm); | |
7ab12479 JB |
1440 | } |
1441 | ||
1442 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1443 | doc: /* Return position at which display currently starts in WINDOW. |
496e208e | 1444 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 1445 | This is updated by redisplay or by calling `set-window-start'. */) |
5842a27b | 1446 | (Lisp_Object window) |
7ab12479 | 1447 | { |
52162052 | 1448 | return Fmarker_position (decode_live_window (window)->start); |
7ab12479 JB |
1449 | } |
1450 | ||
8646118f RS |
1451 | /* This is text temporarily removed from the doc string below. |
1452 | ||
fdb82f93 PJ |
1453 | This function returns nil if the position is not currently known. |
1454 | That happens when redisplay is preempted and doesn't finish. | |
1455 | If in that case you want to compute where the end of the window would | |
1456 | have been if redisplay had finished, do this: | |
1457 | (save-excursion | |
1458 | (goto-char (window-start window)) | |
1459 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1460 | (point))") */ |
1461 | ||
478292ed | 1462 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1463 | doc: /* Return position at which display currently ends in WINDOW. |
496e208e | 1464 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1465 | This is updated by redisplay, when it runs to completion. |
1466 | Simply changing the buffer text or setting `window-start' | |
1467 | does not update this value. | |
87e68db4 | 1468 | Return nil if there is no recorded value. (This can happen if the |
a0a37a6f | 1469 | last redisplay of WINDOW was preempted, and did not finish.) |
fdb82f93 PJ |
1470 | If UPDATE is non-nil, compute the up-to-date position |
1471 | if it isn't already recorded. */) | |
5842a27b | 1472 | (Lisp_Object window, Lisp_Object update) |
7ab12479 JB |
1473 | { |
1474 | Lisp_Object value; | |
52162052 | 1475 | struct window *w = decode_live_window (window); |
5a41ab94 | 1476 | Lisp_Object buf; |
31790df3 | 1477 | struct buffer *b; |
5a41ab94 | 1478 | |
d3d50620 | 1479 | buf = w->buffer; |
b7826503 | 1480 | CHECK_BUFFER (buf); |
b3a10345 | 1481 | b = XBUFFER (buf); |
5a41ab94 | 1482 | |
478292ed | 1483 | if (! NILP (update) |
9d93ce29 | 1484 | && (windows_or_buffers_changed || !w->window_end_valid) |
41791a20 | 1485 | && !noninteractive) |
478292ed | 1486 | { |
cbc099e5 | 1487 | struct text_pos startp; |
4c1acb95 | 1488 | ptrdiff_t charpos = marker_position (w->start); |
cbc099e5 | 1489 | struct it it; |
b3a10345 | 1490 | struct buffer *old_buffer = NULL; |
57b3e30b | 1491 | void *itdata = NULL; |
b3a10345 KS |
1492 | |
1493 | /* Cannot use Fvertical_motion because that function doesn't | |
1494 | cope with variable-height lines. */ | |
1495 | if (b != current_buffer) | |
1496 | { | |
1497 | old_buffer = current_buffer; | |
1498 | set_buffer_internal (b); | |
1499 | } | |
2d6d9df0 GM |
1500 | |
1501 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1502 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1503 | `-l' containing a call to `rmail' with subsequent other |
1504 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1505 | rmail had already narrowed the buffer. */ |
4c1acb95 | 1506 | if (charpos < BEGV) |
cbc099e5 | 1507 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
4c1acb95 | 1508 | else if (charpos > ZV) |
cbc099e5 | 1509 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1510 | else |
d3d50620 | 1511 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
cbc099e5 | 1512 | |
57b3e30b | 1513 | itdata = bidi_shelve_cache (); |
cbc099e5 GM |
1514 | start_display (&it, w, startp); |
1515 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1516 | if (it.current_y < it.last_visible_y) |
1517 | move_it_past_eol (&it); | |
cbc099e5 | 1518 | value = make_number (IT_CHARPOS (it)); |
35928349 | 1519 | bidi_unshelve_cache (itdata, 0); |
177c0ea7 | 1520 | |
99593a9d GM |
1521 | if (old_buffer) |
1522 | set_buffer_internal (old_buffer); | |
478292ed RS |
1523 | } |
1524 | else | |
d3d50620 | 1525 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1526 | |
1527 | return value; | |
1528 | } | |
1529 | ||
a7ca3326 | 1530 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, |
a0a37a6f | 1531 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
52162052 | 1532 | WINDOW must be a live window and defaults to the selected one. |
a0a37a6f | 1533 | Return POS. */) |
5842a27b | 1534 | (Lisp_Object window, Lisp_Object pos) |
7ab12479 | 1535 | { |
52162052 | 1536 | register struct window *w = decode_live_window (window); |
7ab12479 | 1537 | |
f74de345 | 1538 | /* Type of POS is checked by Fgoto_char or set_marker_restricted ... */ |
799417bd | 1539 | |
5481664a MR |
1540 | if (w == XWINDOW (selected_window)) |
1541 | { | |
1542 | if (XBUFFER (w->buffer) == current_buffer) | |
1543 | Fgoto_char (pos); | |
1544 | else | |
1545 | { | |
1546 | struct buffer *old_buffer = current_buffer; | |
1547 | ||
f74de345 DA |
1548 | /* ... but here we want to catch type error before buffer change. */ |
1549 | CHECK_NUMBER_COERCE_MARKER (pos); | |
5481664a MR |
1550 | set_buffer_internal (XBUFFER (w->buffer)); |
1551 | Fgoto_char (pos); | |
1552 | set_buffer_internal (old_buffer); | |
1553 | } | |
1554 | } | |
1555 | else | |
1556 | { | |
1557 | set_marker_restricted (w->pointm, pos, w->buffer); | |
1558 | /* We have to make sure that redisplay updates the window to show | |
1559 | the new value of point. */ | |
1560 | ++windows_or_buffers_changed; | |
1561 | } | |
177c0ea7 | 1562 | |
7ab12479 JB |
1563 | return pos; |
1564 | } | |
1565 | ||
1566 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1567 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
52162052 MR |
1568 | WINDOW must be a live window and defaults to the selected one. Return |
1569 | POS. Optional third arg NOFORCE non-nil inhibits next redisplay from | |
d653c8cc | 1570 | overriding motion of point in order to display at this exact start. */) |
5842a27b | 1571 | (Lisp_Object window, Lisp_Object pos, Lisp_Object noforce) |
7ab12479 | 1572 | { |
52162052 | 1573 | register struct window *w = decode_live_window (window); |
7ab12479 | 1574 | |
d3d50620 | 1575 | set_marker_restricted (w->start, pos, w->buffer); |
f74de345 | 1576 | /* This is not right, but much easier than doing what is right. */ |
c98ff5dd | 1577 | w->start_at_line_beg = 0; |
265a9e55 | 1578 | if (NILP (noforce)) |
c98ff5dd DA |
1579 | w->force_start = 1; |
1580 | w->update_mode_line = 1; | |
80b00b08 DA |
1581 | w->last_modified = 0; |
1582 | w->last_overlay_modified = 0; | |
62c07cc7 JB |
1583 | if (!EQ (window, selected_window)) |
1584 | windows_or_buffers_changed++; | |
ce7fae7d | 1585 | |
7ab12479 JB |
1586 | return pos; |
1587 | } | |
1588 | ||
496e208e MR |
1589 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
1590 | Spos_visible_in_window_p, 0, 3, 0, | |
1591 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. | |
52162052 MR |
1592 | WINDOW must be a live window and defaults to the selected one. |
1593 | ||
1594 | Return nil if that position is scrolled vertically out of view. If a | |
1595 | character is only partially visible, nil is returned, unless the | |
1596 | optional argument PARTIALLY is non-nil. If POS is only out of view | |
1597 | because of horizontal scrolling, return non-nil. If POS is t, it | |
1598 | specifies the position of the last visible glyph in WINDOW. POS | |
1599 | defaults to point in WINDOW; WINDOW defaults to the selected window. | |
496e208e MR |
1600 | |
1601 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
1602 | return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), | |
1603 | where X and Y are the pixel coordinates relative to the top left corner | |
1604 | of the window. The remaining elements are omitted if the character after | |
1605 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
1606 | off-window at the top and bottom of the row, ROWH is the height of the | |
1607 | display row, and VPOS is the row number (0-based) containing POS. */) | |
1608 | (Lisp_Object pos, Lisp_Object window, Lisp_Object partially) | |
1609 | { | |
1610 | register struct window *w; | |
1611 | register EMACS_INT posint; | |
1612 | register struct buffer *buf; | |
1613 | struct text_pos top; | |
1614 | Lisp_Object in_window = Qnil; | |
1615 | int rtop, rbot, rowh, vpos, fully_p = 1; | |
1616 | int x, y; | |
1617 | ||
52162052 | 1618 | w = decode_live_window (window); |
d3d50620 DA |
1619 | buf = XBUFFER (w->buffer); |
1620 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
496e208e MR |
1621 | |
1622 | if (EQ (pos, Qt)) | |
1623 | posint = -1; | |
1624 | else if (!NILP (pos)) | |
1625 | { | |
1626 | CHECK_NUMBER_COERCE_MARKER (pos); | |
1627 | posint = XINT (pos); | |
1628 | } | |
1629 | else if (w == XWINDOW (selected_window)) | |
1630 | posint = PT; | |
1631 | else | |
4c1acb95 | 1632 | posint = marker_position (w->pointm); |
496e208e MR |
1633 | |
1634 | /* If position is above window start or outside buffer boundaries, | |
1635 | or if window start is out of range, position is not visible. */ | |
1636 | if ((EQ (pos, Qt) | |
1637 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
1638 | && CHARPOS (top) >= BUF_BEGV (buf) | |
1639 | && CHARPOS (top) <= BUF_ZV (buf) | |
1640 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) | |
1641 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) | |
1642 | in_window = Qt; | |
1643 | ||
1644 | if (!NILP (in_window) && !NILP (partially)) | |
1645 | { | |
1646 | Lisp_Object part = Qnil; | |
1647 | if (!fully_p) | |
1479c557 | 1648 | part = list4i (rtop, rbot, rowh, vpos); |
496e208e MR |
1649 | in_window = Fcons (make_number (x), |
1650 | Fcons (make_number (y), part)); | |
1651 | } | |
1652 | ||
1653 | return in_window; | |
1654 | } | |
1655 | ||
1656 | DEFUN ("window-line-height", Fwindow_line_height, | |
1657 | Swindow_line_height, 0, 2, 0, | |
1658 | doc: /* Return height in pixels of text line LINE in window WINDOW. | |
52162052 | 1659 | WINDOW must be a live window and defaults to the selected one. |
496e208e MR |
1660 | |
1661 | Return height of current line if LINE is omitted or nil. Return height of | |
1662 | header or mode line if LINE is `header-line' or `mode-line'. | |
1663 | Otherwise, LINE is a text line number starting from 0. A negative number | |
1664 | counts from the end of the window. | |
1665 | ||
1666 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height | |
1667 | in pixels of the visible part of the line, VPOS and YPOS are the | |
1668 | vertical position in lines and pixels of the line, relative to the top | |
1669 | of the first text line, and OFFBOT is the number of off-window pixels at | |
1670 | the bottom of the text line. If there are off-window pixels at the top | |
1671 | of the (first) text line, YPOS is negative. | |
1672 | ||
1673 | Return nil if window display is not up-to-date. In that case, use | |
1674 | `pos-visible-in-window-p' to obtain the information. */) | |
1675 | (Lisp_Object line, Lisp_Object window) | |
1676 | { | |
1677 | register struct window *w; | |
1678 | register struct buffer *b; | |
1679 | struct glyph_row *row, *end_row; | |
d311d28c PE |
1680 | int max_y, crop, i; |
1681 | EMACS_INT n; | |
496e208e | 1682 | |
52162052 | 1683 | w = decode_live_window (window); |
496e208e MR |
1684 | |
1685 | if (noninteractive || w->pseudo_window_p) | |
1686 | return Qnil; | |
1687 | ||
d3d50620 DA |
1688 | CHECK_BUFFER (w->buffer); |
1689 | b = XBUFFER (w->buffer); | |
496e208e MR |
1690 | |
1691 | /* Fail if current matrix is not up-to-date. */ | |
9d93ce29 | 1692 | if (!w->window_end_valid |
496e208e MR |
1693 | || current_buffer->clip_changed |
1694 | || current_buffer->prevent_redisplay_optimizations_p | |
80b00b08 DA |
1695 | || w->last_modified < BUF_MODIFF (b) |
1696 | || w->last_overlay_modified < BUF_OVERLAY_MODIFF (b)) | |
496e208e MR |
1697 | return Qnil; |
1698 | ||
1699 | if (NILP (line)) | |
1700 | { | |
1701 | i = w->cursor.vpos; | |
1702 | if (i < 0 || i >= w->current_matrix->nrows | |
1703 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
1704 | return Qnil; | |
1705 | max_y = window_text_bottom_y (w); | |
1706 | goto found_row; | |
1707 | } | |
1708 | ||
1709 | if (EQ (line, Qheader_line)) | |
1710 | { | |
1711 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) | |
1712 | return Qnil; | |
1713 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
1479c557 | 1714 | return row->enabled_p ? list4i (row->height, 0, 0, 0) : Qnil; |
496e208e MR |
1715 | } |
1716 | ||
1717 | if (EQ (line, Qmode_line)) | |
1718 | { | |
1719 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); | |
89bc0592 | 1720 | return (row->enabled_p ? |
1479c557 PE |
1721 | list4i (row->height, |
1722 | 0, /* not accurate */ | |
1723 | (WINDOW_HEADER_LINE_HEIGHT (w) | |
1724 | + window_text_bottom_y (w)), | |
1725 | 0) | |
89bc0592 | 1726 | : Qnil); |
496e208e MR |
1727 | } |
1728 | ||
1729 | CHECK_NUMBER (line); | |
1730 | n = XINT (line); | |
1731 | ||
1732 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
1733 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
1734 | max_y = window_text_bottom_y (w); | |
1735 | i = 0; | |
1736 | ||
1737 | while ((n < 0 || i < n) | |
1738 | && row <= end_row && row->enabled_p | |
1739 | && row->y + row->height < max_y) | |
1740 | row++, i++; | |
1741 | ||
1742 | if (row > end_row || !row->enabled_p) | |
1743 | return Qnil; | |
1744 | ||
1745 | if (++n < 0) | |
1746 | { | |
1747 | if (-n > i) | |
1748 | return Qnil; | |
1749 | row += n; | |
1750 | i += n; | |
1751 | } | |
1752 | ||
1753 | found_row: | |
1754 | crop = max (0, (row->y + row->height) - max_y); | |
1479c557 | 1755 | return list4i (row->height + min (0, row->y) - crop, i, row->y, crop); |
496e208e | 1756 | } |
d653c8cc | 1757 | |
a7ca3326 | 1758 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, |
d653c8cc MR |
1759 | 0, 1, 0, |
1760 | doc: /* Return non-nil when WINDOW is dedicated to its buffer. | |
12bb3111 | 1761 | More precisely, return the value assigned by the last call of |
7bfac547 MR |
1762 | `set-window-dedicated-p' for WINDOW. Return nil if that function was |
1763 | never called with WINDOW as its argument, or the value set by that | |
52162052 MR |
1764 | function was internally reset since its last call. WINDOW must be a |
1765 | live window and defaults to the selected one. | |
7bfac547 MR |
1766 | |
1767 | When a window is dedicated to its buffer, `display-buffer' will refrain | |
1768 | from displaying another buffer in it. `get-lru-window' and | |
1769 | `get-largest-window' treat dedicated windows specially. | |
1770 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1771 | `kill-buffer' can delete a dedicated window and the containing frame. | |
1772 | ||
1773 | Functions like `set-window-buffer' may change the buffer displayed by a | |
1774 | window, unless that window is "strongly" dedicated to its buffer, that | |
1775 | is the value returned by `window-dedicated-p' is t. */) | |
5842a27b | 1776 | (Lisp_Object window) |
7ab12479 | 1777 | { |
52162052 | 1778 | return decode_live_window (window)->dedicated; |
7ab12479 JB |
1779 | } |
1780 | ||
d207b766 RS |
1781 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1782 | Sset_window_dedicated_p, 2, 2, 0, | |
d653c8cc | 1783 | doc: /* Mark WINDOW as dedicated according to FLAG. |
496e208e MR |
1784 | WINDOW must be a live window and defaults to the selected one. FLAG |
1785 | non-nil means mark WINDOW as dedicated to its buffer. FLAG nil means | |
1786 | mark WINDOW as non-dedicated. Return FLAG. | |
d653c8cc | 1787 | |
7bfac547 MR |
1788 | When a window is dedicated to its buffer, `display-buffer' will refrain |
1789 | from displaying another buffer in it. `get-lru-window' and | |
1790 | `get-largest-window' treat dedicated windows specially. | |
496e208e MR |
1791 | `delete-windows-on', `replace-buffer-in-windows', `quit-window', |
1792 | `quit-restore-window' and `kill-buffer' can delete a dedicated window | |
1793 | and the containing frame. | |
7bfac547 MR |
1794 | |
1795 | As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to | |
1796 | its buffer. Functions like `set-window-buffer' may change the buffer | |
1797 | displayed by a window, unless that window is strongly dedicated to its | |
1798 | buffer. If and when `set-window-buffer' displays another buffer in a | |
496e208e | 1799 | window, it also makes sure that the window is no more dedicated. */) |
5842a27b | 1800 | (Lisp_Object window, Lisp_Object flag) |
7ab12479 | 1801 | { |
e8c17b81 PE |
1802 | wset_dedicated (decode_live_window (window), flag); |
1803 | return flag; | |
7ab12479 JB |
1804 | } |
1805 | ||
496e208e MR |
1806 | DEFUN ("window-prev-buffers", Fwindow_prev_buffers, Swindow_prev_buffers, |
1807 | 0, 1, 0, | |
1808 | doc: /* Return buffers previously shown in WINDOW. | |
1809 | WINDOW must be a live window and defaults to the selected one. | |
1810 | ||
94e0933e CY |
1811 | The return value is a list of elements (BUFFER WINDOW-START POS), |
1812 | where BUFFER is a buffer, WINDOW-START is the start position of the | |
1813 | window for that buffer, and POS is a window-specific point value. */) | |
496e208e MR |
1814 | (Lisp_Object window) |
1815 | { | |
52162052 | 1816 | return decode_live_window (window)->prev_buffers; |
496e208e MR |
1817 | } |
1818 | ||
1819 | DEFUN ("set-window-prev-buffers", Fset_window_prev_buffers, | |
1820 | Sset_window_prev_buffers, 2, 2, 0, | |
1821 | doc: /* Set WINDOW's previous buffers to PREV-BUFFERS. | |
94e0933e | 1822 | WINDOW must be a live window and defaults to the selected one. |
496e208e | 1823 | |
94e0933e CY |
1824 | PREV-BUFFERS should be a list of elements (BUFFER WINDOW-START POS), |
1825 | where BUFFER is a buffer, WINDOW-START is the start position of the | |
1826 | window for that buffer, and POS is a window-specific point value. */) | |
496e208e MR |
1827 | (Lisp_Object window, Lisp_Object prev_buffers) |
1828 | { | |
e8c17b81 PE |
1829 | wset_prev_buffers (decode_live_window (window), prev_buffers); |
1830 | return prev_buffers; | |
496e208e MR |
1831 | } |
1832 | ||
1833 | DEFUN ("window-next-buffers", Fwindow_next_buffers, Swindow_next_buffers, | |
1834 | 0, 1, 0, | |
1835 | doc: /* Return list of buffers recently re-shown in WINDOW. | |
1836 | WINDOW must be a live window and defaults to the selected one. */) | |
1837 | (Lisp_Object window) | |
1838 | { | |
52162052 | 1839 | return decode_live_window (window)->next_buffers; |
496e208e MR |
1840 | } |
1841 | ||
1842 | DEFUN ("set-window-next-buffers", Fset_window_next_buffers, | |
1843 | Sset_window_next_buffers, 2, 2, 0, | |
1844 | doc: /* Set WINDOW's next buffers to NEXT-BUFFERS. | |
94e0933e CY |
1845 | WINDOW must be a live window and defaults to the selected one. |
1846 | NEXT-BUFFERS should be a list of buffers. */) | |
496e208e MR |
1847 | (Lisp_Object window, Lisp_Object next_buffers) |
1848 | { | |
e8c17b81 PE |
1849 | wset_next_buffers (decode_live_window (window), next_buffers); |
1850 | return next_buffers; | |
496e208e | 1851 | } |
d653c8cc | 1852 | |
cfbb2395 JB |
1853 | DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters, |
1854 | 0, 1, 0, | |
d653c8cc | 1855 | doc: /* Return the parameters of WINDOW and their values. |
52162052 MR |
1856 | WINDOW must be a valid window and defaults to the selected one. The |
1857 | return value is a list of elements of the form (PARAMETER . VALUE). */) | |
5842a27b | 1858 | (Lisp_Object window) |
cfbb2395 | 1859 | { |
52162052 | 1860 | return Fcopy_alist (decode_valid_window (window)->window_parameters); |
cfbb2395 JB |
1861 | } |
1862 | ||
1863 | DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter, | |
1864 | 2, 2, 0, | |
d653c8cc | 1865 | doc: /* Return WINDOW's value for PARAMETER. |
a8c729af | 1866 | WINDOW can be any window and defaults to the selected one. */) |
5842a27b | 1867 | (Lisp_Object window, Lisp_Object parameter) |
cfbb2395 | 1868 | { |
927abf37 JB |
1869 | Lisp_Object result; |
1870 | ||
a8c729af | 1871 | result = Fassq (parameter, decode_any_window (window)->window_parameters); |
927abf37 | 1872 | return CDR_SAFE (result); |
cfbb2395 JB |
1873 | } |
1874 | ||
cfbb2395 JB |
1875 | DEFUN ("set-window-parameter", Fset_window_parameter, |
1876 | Sset_window_parameter, 3, 3, 0, | |
d653c8cc | 1877 | doc: /* Set WINDOW's value of PARAMETER to VALUE. |
a8c729af | 1878 | WINDOW can be any window and defaults to the selected one. |
52162052 | 1879 | Return VALUE. */) |
5842a27b | 1880 | (Lisp_Object window, Lisp_Object parameter, Lisp_Object value) |
cfbb2395 | 1881 | { |
a8c729af | 1882 | register struct window *w = decode_any_window (window); |
cfbb2395 JB |
1883 | Lisp_Object old_alist_elt; |
1884 | ||
d3d50620 | 1885 | old_alist_elt = Fassq (parameter, w->window_parameters); |
12bb3111 | 1886 | if (NILP (old_alist_elt)) |
e8c17b81 PE |
1887 | wset_window_parameters |
1888 | (w, Fcons (Fcons (parameter, value), w->window_parameters)); | |
cfbb2395 JB |
1889 | else |
1890 | Fsetcdr (old_alist_elt, value); | |
927abf37 | 1891 | return value; |
cfbb2395 JB |
1892 | } |
1893 | ||
7ab12479 JB |
1894 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, |
1895 | 0, 1, 0, | |
c85322d0 | 1896 | doc: /* Return the display-table that WINDOW is using. |
52162052 | 1897 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 1898 | (Lisp_Object window) |
7ab12479 | 1899 | { |
52162052 | 1900 | return decode_live_window (window)->display_table; |
7ab12479 JB |
1901 | } |
1902 | ||
5500c422 GM |
1903 | /* Get the display table for use on window W. This is either W's |
1904 | display table or W's buffer's display table. Ignore the specified | |
1905 | tables if they are not valid; if no valid table is specified, | |
1906 | return 0. */ | |
7ab12479 | 1907 | |
319315f1 | 1908 | struct Lisp_Char_Table * |
971de7fb | 1909 | window_display_table (struct window *w) |
7ab12479 | 1910 | { |
c756cdbe GM |
1911 | struct Lisp_Char_Table *dp = NULL; |
1912 | ||
d3d50620 DA |
1913 | if (DISP_TABLE_P (w->display_table)) |
1914 | dp = XCHAR_TABLE (w->display_table); | |
1915 | else if (BUFFERP (w->buffer)) | |
c756cdbe | 1916 | { |
d3d50620 | 1917 | struct buffer *b = XBUFFER (w->buffer); |
177c0ea7 | 1918 | |
4b4deea2 TT |
1919 | if (DISP_TABLE_P (BVAR (b, display_table))) |
1920 | dp = XCHAR_TABLE (BVAR (b, display_table)); | |
c756cdbe GM |
1921 | else if (DISP_TABLE_P (Vstandard_display_table)) |
1922 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1923 | } | |
171d003c | 1924 | |
c756cdbe | 1925 | return dp; |
7ab12479 JB |
1926 | } |
1927 | ||
3a2712f9 | 1928 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
52162052 MR |
1929 | doc: /* Set WINDOW's display-table to TABLE. |
1930 | WINDOW must be a live window and defaults to the selected one. */) | |
5842a27b | 1931 | (register Lisp_Object window, Lisp_Object table) |
7ab12479 | 1932 | { |
e8c17b81 PE |
1933 | wset_display_table (decode_live_window (window), table); |
1934 | return table; | |
7ab12479 JB |
1935 | } |
1936 | \f | |
562dd5e9 | 1937 | /* Record info on buffer window W is displaying |
7ab12479 | 1938 | when it is about to cease to display that buffer. */ |
dfcf069d | 1939 | static void |
971de7fb | 1940 | unshow_buffer (register struct window *w) |
7ab12479 | 1941 | { |
12cae7c0 | 1942 | Lisp_Object buf; |
b73ea88e | 1943 | struct buffer *b; |
7ab12479 | 1944 | |
d3d50620 | 1945 | buf = w->buffer; |
b73ea88e | 1946 | b = XBUFFER (buf); |
d3d50620 | 1947 | if (b != XMARKER (w->pointm)->buffer) |
1088b922 | 1948 | emacs_abort (); |
7ab12479 | 1949 | |
573f41ab | 1950 | #if 0 |
7ab12479 | 1951 | if (w == XWINDOW (selected_window) |
d3d50620 | 1952 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) |
7ab12479 JB |
1953 | /* Do this except when the selected window's buffer |
1954 | is being removed from some other window. */ | |
573f41ab RS |
1955 | #endif |
1956 | /* last_window_start records the start position that this buffer | |
1957 | had in the last window to be disconnected from it. | |
1958 | Now that this statement is unconditional, | |
1959 | it is possible for the buffer to be displayed in the | |
1960 | selected window, while last_window_start reflects another | |
1961 | window which was recently showing the same buffer. | |
1962 | Some people might say that might be a good thing. Let's see. */ | |
d3d50620 | 1963 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1964 | |
1965 | /* Point in the selected window's buffer | |
1966 | is actually stored in that buffer, and the window's pointm isn't used. | |
1967 | So don't clobber point in that buffer. */ | |
d3d50620 | 1968 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
c4b6914d MR |
1969 | /* Don't clobber point in current buffer either (this could be |
1970 | useful in connection with bug#12208). | |
1971 | && XBUFFER (buf) != current_buffer */ | |
719eaeb1 | 1972 | /* This line helps to fix Horsley's testbug.el bug. */ |
4b4deea2 TT |
1973 | && !(WINDOWP (BVAR (b, last_selected_window)) |
1974 | && w != XWINDOW (BVAR (b, last_selected_window)) | |
d3d50620 | 1975 | && EQ (buf, XWINDOW (BVAR (b, last_selected_window))->buffer))) |
b73ea88e RS |
1976 | temp_set_point_both (b, |
1977 | clip_to_bounds (BUF_BEGV (b), | |
4c1acb95 | 1978 | marker_position (w->pointm), |
b73ea88e RS |
1979 | BUF_ZV (b)), |
1980 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
d3d50620 | 1981 | marker_byte_position (w->pointm), |
b73ea88e | 1982 | BUF_ZV_BYTE (b))); |
177c0ea7 | 1983 | |
4b4deea2 TT |
1984 | if (WINDOWP (BVAR (b, last_selected_window)) |
1985 | && w == XWINDOW (BVAR (b, last_selected_window))) | |
39eb03f1 | 1986 | bset_last_selected_window (b, Qnil); |
7ab12479 JB |
1987 | } |
1988 | ||
1a13852e MR |
1989 | /* Put NEW into the window structure in place of OLD. SETFLAG zero |
1990 | means change window structure only. Otherwise store geometry and | |
1991 | other settings as well. */ | |
dfcf069d | 1992 | static void |
1a13852e | 1993 | replace_window (Lisp_Object old, Lisp_Object new, int setflag) |
7ab12479 JB |
1994 | { |
1995 | register Lisp_Object tem; | |
1a13852e | 1996 | register struct window *o = XWINDOW (old), *n = XWINDOW (new); |
7ab12479 | 1997 | |
1a13852e MR |
1998 | /* If OLD is its frame's root window, then NEW is the new |
1999 | root window for that frame. */ | |
d3d50620 | 2000 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
f00af5b1 | 2001 | fset_root_window (XFRAME (o->frame), new); |
077288cf DA |
2002 | |
2003 | if (setflag) | |
2004 | { | |
e8c17b81 PE |
2005 | wset_left_col (n, o->left_col); |
2006 | wset_top_line (n, o->top_line); | |
2007 | wset_total_cols (n, o->total_cols); | |
2008 | wset_total_lines (n, o->total_lines); | |
2009 | wset_normal_cols (n, o->normal_cols); | |
2010 | wset_normal_cols (o, make_float (1.0)); | |
2011 | wset_normal_lines (n, o->normal_lines); | |
2012 | wset_normal_lines (o, make_float (1.0)); | |
1a13852e MR |
2013 | n->desired_matrix = n->current_matrix = 0; |
2014 | n->vscroll = 0; | |
2015 | memset (&n->cursor, 0, sizeof (n->cursor)); | |
2016 | memset (&n->last_cursor, 0, sizeof (n->last_cursor)); | |
2017 | memset (&n->phys_cursor, 0, sizeof (n->phys_cursor)); | |
2018 | n->phys_cursor_type = -1; | |
2019 | n->phys_cursor_width = -1; | |
2020 | n->must_be_updated_p = 0; | |
2021 | n->pseudo_window_p = 0; | |
e8c17b81 PE |
2022 | wset_window_end_vpos (n, make_number (0)); |
2023 | wset_window_end_pos (n, make_number (0)); | |
9d93ce29 | 2024 | n->window_end_valid = 0; |
1a13852e | 2025 | n->frozen_window_start_p = 0; |
1a13852e MR |
2026 | } |
2027 | ||
d3d50620 | 2028 | tem = o->next; |
e8c17b81 | 2029 | wset_next (n, tem); |
265a9e55 | 2030 | if (!NILP (tem)) |
e8c17b81 | 2031 | wset_prev (XWINDOW (tem), new); |
7ab12479 | 2032 | |
d3d50620 | 2033 | tem = o->prev; |
e8c17b81 | 2034 | wset_prev (n, tem); |
265a9e55 | 2035 | if (!NILP (tem)) |
e8c17b81 | 2036 | wset_next (XWINDOW (tem), new); |
7ab12479 | 2037 | |
d3d50620 | 2038 | tem = o->parent; |
e8c17b81 | 2039 | wset_parent (n, tem); |
265a9e55 | 2040 | if (!NILP (tem)) |
7ab12479 | 2041 | { |
d3d50620 | 2042 | if (EQ (XWINDOW (tem)->vchild, old)) |
e8c17b81 | 2043 | wset_vchild (XWINDOW (tem), new); |
d3d50620 | 2044 | if (EQ (XWINDOW (tem)->hchild, old)) |
e8c17b81 | 2045 | wset_hchild (XWINDOW (tem), new); |
7ab12479 | 2046 | } |
1a13852e MR |
2047 | } |
2048 | ||
2049 | /* If window WINDOW and its parent window are iso-combined, merge | |
2050 | WINDOW's children into those of its parent window and mark WINDOW as | |
2051 | deleted. */ | |
2052 | ||
2053 | static void | |
2054 | recombine_windows (Lisp_Object window) | |
2055 | { | |
2056 | struct window *w, *p, *c; | |
2057 | Lisp_Object parent, child; | |
748fa866 | 2058 | bool horflag; |
1a13852e MR |
2059 | |
2060 | w = XWINDOW (window); | |
d3d50620 DA |
2061 | parent = w->parent; |
2062 | if (!NILP (parent) && NILP (w->combination_limit)) | |
1a13852e MR |
2063 | { |
2064 | p = XWINDOW (parent); | |
d3d50620 DA |
2065 | if (((!NILP (p->vchild) && !NILP (w->vchild)) |
2066 | || (!NILP (p->hchild) && !NILP (w->hchild)))) | |
1a13852e MR |
2067 | /* WINDOW and PARENT are both either a vertical or a horizontal |
2068 | combination. */ | |
2069 | { | |
d3d50620 DA |
2070 | horflag = NILP (w->vchild); |
2071 | child = horflag ? w->hchild : w->vchild; | |
1a13852e MR |
2072 | c = XWINDOW (child); |
2073 | ||
2074 | /* Splice WINDOW's children into its parent's children and | |
2075 | assign new normal sizes. */ | |
d3d50620 | 2076 | if (NILP (w->prev)) |
1a13852e | 2077 | if (horflag) |
e8c17b81 | 2078 | wset_hchild (p, child); |
1a13852e | 2079 | else |
e8c17b81 | 2080 | wset_vchild (p, child); |
1a13852e MR |
2081 | else |
2082 | { | |
e8c17b81 PE |
2083 | wset_prev (c, w->prev); |
2084 | wset_next (XWINDOW (w->prev), child); | |
1a13852e MR |
2085 | } |
2086 | ||
2087 | while (c) | |
2088 | { | |
e8c17b81 | 2089 | wset_parent (c, parent); |
1a13852e MR |
2090 | |
2091 | if (horflag) | |
e8c17b81 PE |
2092 | wset_normal_cols (c, |
2093 | make_float (XFLOATINT (c->total_cols) | |
2094 | / XFLOATINT (p->total_cols))); | |
1a13852e | 2095 | else |
e8c17b81 PE |
2096 | wset_normal_lines (c, |
2097 | make_float (XFLOATINT (c->total_lines) | |
2098 | / XFLOATINT (p->total_lines))); | |
1a13852e | 2099 | |
d3d50620 | 2100 | if (NILP (c->next)) |
1a13852e | 2101 | { |
d3d50620 | 2102 | if (!NILP (w->next)) |
1a13852e | 2103 | { |
e8c17b81 PE |
2104 | wset_next (c, w->next); |
2105 | wset_prev (XWINDOW (c->next), child); | |
1a13852e MR |
2106 | } |
2107 | ||
2108 | c = 0; | |
2109 | } | |
2110 | else | |
2111 | { | |
d3d50620 | 2112 | child = c->next; |
1a13852e MR |
2113 | c = XWINDOW (child); |
2114 | } | |
2115 | } | |
7ab12479 | 2116 | |
1a13852e | 2117 | /* WINDOW can be deleted now. */ |
e8c17b81 PE |
2118 | wset_vchild (w, Qnil); |
2119 | wset_hchild (w, Qnil); | |
1a13852e MR |
2120 | } |
2121 | } | |
7ab12479 | 2122 | } |
6198ccd0 MR |
2123 | |
2124 | /* If WINDOW can be deleted, delete it. */ | |
4475bec4 | 2125 | static void |
6198ccd0 MR |
2126 | delete_deletable_window (Lisp_Object window) |
2127 | { | |
2128 | if (!NILP (call1 (Qwindow_deletable_p, window))) | |
2129 | call1 (Qdelete_window, window); | |
2130 | } | |
1a13852e | 2131 | \f |
67492200 GM |
2132 | /*********************************************************************** |
2133 | Window List | |
2134 | ***********************************************************************/ | |
2135 | ||
f95464e4 GM |
2136 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
2137 | pointer. This is a callback function for foreach_window, used in | |
496e208e | 2138 | the window_list function. */ |
67492200 GM |
2139 | |
2140 | static int | |
971de7fb | 2141 | add_window_to_list (struct window *w, void *user_data) |
67492200 | 2142 | { |
f95464e4 | 2143 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
2144 | Lisp_Object window; |
2145 | XSETWINDOW (window, w); | |
212116d6 | 2146 | *list = Fcons (window, *list); |
67492200 GM |
2147 | return 1; |
2148 | } | |
2149 | ||
2150 | ||
2151 | /* Return a list of all windows, for use by next_window. If | |
2152 | Vwindow_list is a list, return that list. Otherwise, build a new | |
2153 | list, cache it in Vwindow_list, and return that. */ | |
2154 | ||
2155 | static Lisp_Object | |
971de7fb | 2156 | window_list (void) |
67492200 GM |
2157 | { |
2158 | if (!CONSP (Vwindow_list)) | |
2159 | { | |
5b04e9f9 | 2160 | Lisp_Object tail, frame; |
212116d6 | 2161 | |
67492200 | 2162 | Vwindow_list = Qnil; |
5b04e9f9 | 2163 | FOR_EACH_FRAME (tail, frame) |
212116d6 GM |
2164 | { |
2165 | Lisp_Object args[2]; | |
2166 | ||
2167 | /* We are visiting windows in canonical order, and add | |
2168 | new windows at the front of args[1], which means we | |
2169 | have to reverse this list at the end. */ | |
2170 | args[1] = Qnil; | |
5b04e9f9 | 2171 | foreach_window (XFRAME (frame), add_window_to_list, &args[1]); |
212116d6 GM |
2172 | args[0] = Vwindow_list; |
2173 | args[1] = Fnreverse (args[1]); | |
2174 | Vwindow_list = Fnconc (2, args); | |
2175 | } | |
67492200 | 2176 | } |
177c0ea7 | 2177 | |
67492200 GM |
2178 | return Vwindow_list; |
2179 | } | |
2180 | ||
2181 | ||
118ea242 GM |
2182 | /* Value is non-zero if WINDOW satisfies the constraints given by |
2183 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 2184 | |
118ea242 GM |
2185 | MINIBUF t means WINDOW may be minibuffer windows. |
2186 | `lambda' means WINDOW may not be a minibuffer window. | |
2187 | a window means a specific minibuffer window | |
67492200 | 2188 | |
118ea242 GM |
2189 | ALL_FRAMES t means search all frames, |
2190 | nil means search just current frame, | |
aa248733 MS |
2191 | `visible' means search just visible frames on the |
2192 | current terminal, | |
2193 | 0 means search visible and iconified frames on the | |
2194 | current terminal, | |
118ea242 GM |
2195 | a window means search the frame that window belongs to, |
2196 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
2197 | |
2198 | static int | |
971de7fb | 2199 | candidate_window_p (Lisp_Object window, Lisp_Object owindow, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 GM |
2200 | { |
2201 | struct window *w = XWINDOW (window); | |
d3d50620 | 2202 | struct frame *f = XFRAME (w->frame); |
67492200 GM |
2203 | int candidate_p = 1; |
2204 | ||
d3d50620 | 2205 | if (!BUFFERP (w->buffer)) |
67492200 GM |
2206 | candidate_p = 0; |
2207 | else if (MINI_WINDOW_P (w) | |
2208 | && (EQ (minibuf, Qlambda) | |
2209 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
2210 | { | |
2211 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
2212 | If it is a window, consider only that one. */ | |
2213 | candidate_p = 0; | |
2214 | } | |
118ea242 GM |
2215 | else if (EQ (all_frames, Qt)) |
2216 | candidate_p = 1; | |
67492200 | 2217 | else if (NILP (all_frames)) |
118ea242 | 2218 | { |
a54e2c05 | 2219 | eassert (WINDOWP (owindow)); |
d3d50620 | 2220 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); |
118ea242 | 2221 | } |
67492200 GM |
2222 | else if (EQ (all_frames, Qvisible)) |
2223 | { | |
de509a60 | 2224 | candidate_p = FRAME_VISIBLE_P (f) |
d3d50620 | 2225 | && (FRAME_TERMINAL (XFRAME (w->frame)) |
de509a60 SM |
2226 | == FRAME_TERMINAL (XFRAME (selected_frame))); |
2227 | ||
67492200 GM |
2228 | } |
2229 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
2230 | { | |
ca2d5566 SM |
2231 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
2232 | #ifdef HAVE_X_WINDOWS | |
2233 | /* Yuck!! If we've just created the frame and the | |
2234 | window-manager requested the user to place it | |
2235 | manually, the window may still not be considered | |
2236 | `visible'. I'd argue it should be at least | |
2237 | something like `iconified', but don't know how to do | |
2238 | that yet. --Stef */ | |
2239 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
2240 | && !f->output_data.x->has_been_visible) | |
2241 | #endif | |
de509a60 | 2242 | ) |
d3d50620 | 2243 | && (FRAME_TERMINAL (XFRAME (w->frame)) |
de509a60 | 2244 | == FRAME_TERMINAL (XFRAME (selected_frame))); |
67492200 | 2245 | } |
67492200 GM |
2246 | else if (WINDOWP (all_frames)) |
2247 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
d3d50620 DA |
2248 | || EQ (XWINDOW (all_frames)->frame, w->frame) |
2249 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 | 2250 | else if (FRAMEP (all_frames)) |
d3d50620 | 2251 | candidate_p = EQ (all_frames, w->frame); |
67492200 GM |
2252 | |
2253 | return candidate_p; | |
2254 | } | |
2255 | ||
2256 | ||
2257 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
aa248733 MS |
2258 | Fwindow_list. See candidate_window_p for the meaning of WINDOW, |
2259 | MINIBUF, and ALL_FRAMES. */ | |
67492200 GM |
2260 | |
2261 | static void | |
971de7fb | 2262 | decode_next_window_args (Lisp_Object *window, Lisp_Object *minibuf, Lisp_Object *all_frames) |
67492200 | 2263 | { |
b9e9df47 | 2264 | struct window *w = decode_live_window (*window); |
177c0ea7 | 2265 | |
b6a9e8b1 | 2266 | XSETWINDOW (*window, w); |
67492200 GM |
2267 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
2268 | does. */ | |
2269 | if (NILP (*minibuf)) | |
2270 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
2271 | else if (!EQ (*minibuf, Qt)) | |
2272 | *minibuf = Qlambda; | |
177c0ea7 | 2273 | |
67492200 GM |
2274 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
2275 | => count none of them, or a specific minibuffer window (the | |
2276 | active one) to count. */ | |
2277 | ||
2278 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
2279 | if (NILP (*all_frames)) | |
f00af5b1 | 2280 | *all_frames |
3a45383a | 2281 | = (!EQ (*minibuf, Qlambda) |
b9e9df47 | 2282 | ? FRAME_MINIBUF_WINDOW (XFRAME (w->frame)) |
3a45383a | 2283 | : Qnil); |
67492200 GM |
2284 | else if (EQ (*all_frames, Qvisible)) |
2285 | ; | |
0f8fe9a2 | 2286 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
2287 | ; |
2288 | else if (FRAMEP (*all_frames)) | |
2289 | ; | |
2290 | else if (!EQ (*all_frames, Qt)) | |
2291 | *all_frames = Qnil; | |
67492200 GM |
2292 | } |
2293 | ||
2294 | ||
ab6d1131 | 2295 | /* Return the next or previous window of WINDOW in cyclic ordering |
67492200 GM |
2296 | of windows. NEXT_P non-zero means return the next window. See the |
2297 | documentation string of next-window for the meaning of MINIBUF and | |
2298 | ALL_FRAMES. */ | |
2299 | ||
2300 | static Lisp_Object | |
971de7fb | 2301 | next_window (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames, int next_p) |
67492200 GM |
2302 | { |
2303 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 2304 | |
67492200 GM |
2305 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
2306 | return the first window on the frame. */ | |
2307 | if (FRAMEP (all_frames) | |
d3d50620 | 2308 | && !EQ (all_frames, XWINDOW (window)->frame)) |
67492200 | 2309 | return Fframe_first_window (all_frames); |
177c0ea7 | 2310 | |
212116d6 | 2311 | if (next_p) |
67492200 GM |
2312 | { |
2313 | Lisp_Object list; | |
177c0ea7 | 2314 | |
67492200 GM |
2315 | /* Find WINDOW in the list of all windows. */ |
2316 | list = Fmemq (window, window_list ()); | |
2317 | ||
2318 | /* Scan forward from WINDOW to the end of the window list. */ | |
2319 | if (CONSP (list)) | |
2320 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 2321 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2322 | break; |
2323 | ||
2324 | /* Scan from the start of the window list up to WINDOW. */ | |
2325 | if (!CONSP (list)) | |
2326 | for (list = Vwindow_list; | |
2327 | CONSP (list) && !EQ (XCAR (list), window); | |
2328 | list = XCDR (list)) | |
118ea242 | 2329 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2330 | break; |
2331 | ||
2332 | if (CONSP (list)) | |
2333 | window = XCAR (list); | |
2334 | } | |
2335 | else | |
2336 | { | |
2337 | Lisp_Object candidate, list; | |
177c0ea7 | 2338 | |
67492200 GM |
2339 | /* Scan through the list of windows for candidates. If there are |
2340 | candidate windows in front of WINDOW, the last one of these | |
2341 | is the one we want. If there are candidates following WINDOW | |
2342 | in the list, again the last one of these is the one we want. */ | |
2343 | candidate = Qnil; | |
2344 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
2345 | { | |
2346 | if (EQ (XCAR (list), window)) | |
2347 | { | |
2348 | if (WINDOWP (candidate)) | |
2349 | break; | |
2350 | } | |
118ea242 GM |
2351 | else if (candidate_window_p (XCAR (list), window, minibuf, |
2352 | all_frames)) | |
67492200 GM |
2353 | candidate = XCAR (list); |
2354 | } | |
2355 | ||
2356 | if (WINDOWP (candidate)) | |
2357 | window = candidate; | |
2358 | } | |
2359 | ||
2360 | return window; | |
2361 | } | |
7ab12479 | 2362 | |
7ab12479 | 2363 | |
a7ca3326 | 2364 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
a9b9b7f5 | 2365 | doc: /* Return live window after WINDOW in the cyclic ordering of windows. |
87e68db4 | 2366 | WINDOW must be a live window and defaults to the selected one. The |
9397e56f MR |
2367 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to |
2368 | consider. | |
2369 | ||
2370 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2371 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2372 | even if the minibuffer is not active. Any other value means do not | |
2373 | consider the minibuffer window even if the minibuffer is active. | |
2374 | ||
2375 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2376 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2377 | minibuffer counts, consider all windows on all frames that share that | |
2378 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2379 | meanings: | |
2380 | ||
2381 | - t means consider all windows on all existing frames. | |
2382 | ||
2383 | - `visible' means consider all windows on all visible frames. | |
2384 | ||
2385 | - 0 (the number zero) means consider all windows on all visible and | |
2386 | iconified frames. | |
2387 | ||
2388 | - A frame means consider all windows on that frame only. | |
ab6d1131 | 2389 | |
ab6d1131 | 2390 | Anything else means consider all windows on WINDOW's frame and no |
9397e56f | 2391 | others. |
fdb82f93 PJ |
2392 | |
2393 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
2394 | `next-window' to iterate through the entire cycle of acceptable | |
2395 | windows, eventually ending up back at the window you started with. | |
2396 | `previous-window' traverses the same cycle, in the reverse order. */) | |
5842a27b | 2397 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2398 | { |
67492200 | 2399 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
2400 | } |
2401 | ||
67492200 | 2402 | |
26f6279d | 2403 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
a9b9b7f5 | 2404 | doc: /* Return live window before WINDOW in the cyclic ordering of windows. |
9397e56f MR |
2405 | WINDOW must be a live window and defaults to the selected one. The |
2406 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to | |
2407 | consider. | |
2408 | ||
2409 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2410 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2411 | even if the minibuffer is not active. Any other value means do not | |
2412 | consider the minibuffer window even if the minibuffer is active. | |
2413 | ||
2414 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2415 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2416 | minibuffer counts, consider all windows on all frames that share that | |
2417 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2418 | meanings: | |
2419 | ||
2420 | - t means consider all windows on all existing frames. | |
2421 | ||
2422 | - `visible' means consider all windows on all visible frames. | |
2423 | ||
2424 | - 0 (the number zero) means consider all windows on all visible and | |
2425 | iconified frames. | |
2426 | ||
2427 | - A frame means consider all windows on that frame only. | |
2428 | ||
2429 | Anything else means consider all windows on WINDOW's frame and no | |
2430 | others. | |
ab6d1131 MR |
2431 | |
2432 | If you use consistent values for MINIBUF and ALL-FRAMES, you can | |
2433 | use `previous-window' to iterate through the entire cycle of | |
2434 | acceptable windows, eventually ending up back at the window you | |
2435 | started with. `next-window' traverses the same cycle, in the | |
2436 | reverse order. */) | |
5842a27b | 2437 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2438 | { |
67492200 | 2439 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2440 | } |
2441 | ||
67492200 | 2442 | |
ab6d1131 | 2443 | /* Return a list of windows in cyclic ordering. Arguments are like |
cd2904bd GM |
2444 | for `next-window'. */ |
2445 | ||
2446 | static Lisp_Object | |
971de7fb | 2447 | window_list_1 (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 | 2448 | { |
403de3b4 | 2449 | Lisp_Object tail, list, rest; |
67492200 GM |
2450 | |
2451 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2452 | list = Qnil; | |
177c0ea7 | 2453 | |
67492200 | 2454 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2455 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2456 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2457 | |
403de3b4 RS |
2458 | /* Rotate the list to start with WINDOW. */ |
2459 | list = Fnreverse (list); | |
2460 | rest = Fmemq (window, list); | |
2461 | if (!NILP (rest) && !EQ (rest, list)) | |
2462 | { | |
1725a7c9 | 2463 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2464 | ; |
2465 | XSETCDR (tail, Qnil); | |
2466 | list = nconc2 (rest, list); | |
2467 | } | |
2468 | return list; | |
67492200 GM |
2469 | } |
2470 | ||
2471 | ||
abde8f8c MR |
2472 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, |
2473 | doc: /* Return a list of windows on FRAME, starting with WINDOW. | |
2474 | FRAME nil or omitted means use the selected frame. | |
49745b39 | 2475 | WINDOW nil or omitted means use the window selected within FRAME. |
abde8f8c MR |
2476 | MINIBUF t means include the minibuffer window, even if it isn't active. |
2477 | MINIBUF nil or omitted means include the minibuffer window only | |
2478 | if it's active. | |
2479 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2480 | (Lisp_Object frame, Lisp_Object minibuf, Lisp_Object window) | |
2481 | { | |
2482 | if (NILP (window)) | |
e69b0960 | 2483 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
abde8f8c MR |
2484 | CHECK_WINDOW (window); |
2485 | if (NILP (frame)) | |
2486 | frame = selected_frame; | |
2487 | ||
d3d50620 | 2488 | if (!EQ (frame, XWINDOW (window)->frame)) |
abde8f8c MR |
2489 | error ("Window is on a different frame"); |
2490 | ||
2491 | return window_list_1 (window, minibuf, frame); | |
2492 | } | |
2493 | ||
2494 | ||
1a13852e MR |
2495 | DEFUN ("window-list-1", Fwindow_list_1, Swindow_list_1, 0, 3, 0, |
2496 | doc: /* Return a list of all live windows. | |
2497 | WINDOW specifies the first window to list and defaults to the selected | |
2498 | window. | |
2499 | ||
2500 | Optional argument MINIBUF nil or omitted means consider the minibuffer | |
2501 | window only if the minibuffer is active. MINIBUF t means consider the | |
2502 | minibuffer window even if the minibuffer is not active. Any other value | |
2503 | means do not consider the minibuffer window even if the minibuffer is | |
2504 | active. | |
2505 | ||
2506 | Optional argument ALL-FRAMES nil or omitted means consider all windows | |
2507 | on WINDOW's frame, plus the minibuffer window if specified by the | |
2508 | MINIBUF argument. If the minibuffer counts, consider all windows on all | |
2509 | frames that share that minibuffer too. The following non-nil values of | |
2510 | ALL-FRAMES have special meanings: | |
2511 | ||
2512 | - t means consider all windows on all existing frames. | |
2513 | ||
2514 | - `visible' means consider all windows on all visible frames. | |
2515 | ||
2516 | - 0 (the number zero) means consider all windows on all visible and | |
2517 | iconified frames. | |
2518 | ||
2519 | - A frame means consider all windows on that frame only. | |
2520 | ||
2521 | Anything else means consider all windows on WINDOW's frame and no | |
2522 | others. | |
2523 | ||
2524 | If WINDOW is not on the list of windows returned, some other window will | |
8350f087 | 2525 | be listed first but no error is signaled. */) |
1a13852e MR |
2526 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
2527 | { | |
2528 | return window_list_1 (window, minibuf, all_frames); | |
2529 | } | |
7ab12479 JB |
2530 | \f |
2531 | /* Look at all windows, performing an operation specified by TYPE | |
2532 | with argument OBJ. | |
75d8f668 | 2533 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2534 | Qnil, look at just the selected frame; |
89bca612 | 2535 | Qvisible, look at visible frames; |
75d8f668 | 2536 | a frame, just look at windows on that frame. |
85fe3b5e | 2537 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2538 | |
2539 | enum window_loop | |
2540 | { | |
2541 | WINDOW_LOOP_UNUSED, | |
9397e56f MR |
2542 | GET_BUFFER_WINDOW, /* Arg is buffer */ |
2543 | REPLACE_BUFFER_IN_WINDOWS_SAFELY, /* Arg is buffer */ | |
2544 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ | |
3f8ab7bd | 2545 | CHECK_ALL_WINDOWS |
7ab12479 JB |
2546 | }; |
2547 | ||
2548 | static Lisp_Object | |
971de7fb | 2549 | window_loop (enum window_loop type, Lisp_Object obj, int mini, Lisp_Object frames) |
7ab12479 | 2550 | { |
118ea242 | 2551 | Lisp_Object window, windows, best_window, frame_arg; |
9397e56f | 2552 | int frame_best_window_flag = 0; |
118ea242 | 2553 | struct frame *f; |
ffdc852d | 2554 | struct gcpro gcpro1; |
177c0ea7 | 2555 | |
44fa5b1e JB |
2556 | /* If we're only looping through windows on a particular frame, |
2557 | frame points to that frame. If we're looping through windows | |
2558 | on all frames, frame is 0. */ | |
2559 | if (FRAMEP (frames)) | |
118ea242 | 2560 | f = XFRAME (frames); |
44fa5b1e | 2561 | else if (NILP (frames)) |
118ea242 | 2562 | f = SELECTED_FRAME (); |
7ab12479 | 2563 | else |
118ea242 | 2564 | f = NULL; |
177c0ea7 | 2565 | |
118ea242 | 2566 | if (f) |
89bca612 | 2567 | frame_arg = Qlambda; |
0f8fe9a2 | 2568 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2569 | frame_arg = frames; |
89bca612 RS |
2570 | else if (EQ (frames, Qvisible)) |
2571 | frame_arg = frames; | |
118ea242 GM |
2572 | else |
2573 | frame_arg = Qt; | |
7ab12479 | 2574 | |
89bca612 RS |
2575 | /* frame_arg is Qlambda to stick to one frame, |
2576 | Qvisible to consider all visible frames, | |
2577 | or Qt otherwise. */ | |
2578 | ||
7ab12479 | 2579 | /* Pick a window to start with. */ |
017b2bad | 2580 | if (WINDOWP (obj)) |
118ea242 GM |
2581 | window = obj; |
2582 | else if (f) | |
2583 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2584 | else |
118ea242 | 2585 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2586 | |
cd2904bd | 2587 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2588 | GCPRO1 (windows); |
7ab12479 | 2589 | best_window = Qnil; |
118ea242 | 2590 | |
e67a1dea | 2591 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2592 | { |
118ea242 | 2593 | struct window *w; |
177c0ea7 | 2594 | |
118ea242 GM |
2595 | window = XCAR (windows); |
2596 | w = XWINDOW (window); | |
177c0ea7 | 2597 | |
118ea242 GM |
2598 | /* Note that we do not pay attention here to whether the frame |
2599 | is visible, since Fwindow_list skips non-visible frames if | |
2600 | that is desired, under the control of frame_arg. */ | |
2601 | if (!MINI_WINDOW_P (w) | |
9397e56f MR |
2602 | /* For REPLACE_BUFFER_IN_WINDOWS_SAFELY, we must always |
2603 | consider all windows. */ | |
2604 | || type == REPLACE_BUFFER_IN_WINDOWS_SAFELY | |
7ab12479 JB |
2605 | || (mini && minibuf_level > 0)) |
2606 | switch (type) | |
2607 | { | |
2608 | case GET_BUFFER_WINDOW: | |
d3d50620 | 2609 | if (EQ (w->buffer, obj) |
9397e56f MR |
2610 | /* Don't find any minibuffer window except the one that |
2611 | is currently in use. */ | |
2612 | && (MINI_WINDOW_P (w) ? EQ (window, minibuf_window) : 1)) | |
118ea242 | 2613 | { |
9397e56f MR |
2614 | if (EQ (window, selected_window)) |
2615 | /* Preferably return the selected window. */ | |
ca2d5566 | 2616 | RETURN_UNGCPRO (window); |
d3d50620 | 2617 | else if (EQ (XWINDOW (window)->frame, selected_frame) |
9397e56f MR |
2618 | && !frame_best_window_flag) |
2619 | /* Prefer windows on the current frame (but don't | |
2620 | choose another one if we have one already). */ | |
118ea242 | 2621 | { |
9397e56f MR |
2622 | best_window = window; |
2623 | frame_best_window_flag = 1; | |
7ab12479 | 2624 | } |
9397e56f MR |
2625 | else if (NILP (best_window)) |
2626 | best_window = window; | |
7ab12479 JB |
2627 | } |
2628 | break; | |
2629 | ||
9397e56f MR |
2630 | case REPLACE_BUFFER_IN_WINDOWS_SAFELY: |
2631 | /* We could simply check whether the buffer shown by window | |
2632 | is live, and show another buffer in case it isn't. */ | |
d3d50620 | 2633 | if (EQ (w->buffer, obj)) |
7ab12479 | 2634 | { |
9397e56f | 2635 | /* Undedicate WINDOW. */ |
e8c17b81 | 2636 | wset_dedicated (w, Qnil); |
9397e56f MR |
2637 | /* Make WINDOW show the buffer returned by |
2638 | other_buffer_safely, don't run any hooks. */ | |
2639 | set_window_buffer | |
d3d50620 | 2640 | (window, other_buffer_safely (w->buffer), 0, 0); |
9397e56f MR |
2641 | /* If WINDOW is the selected window, make its buffer |
2642 | current. But do so only if the window shows the | |
2643 | current buffer (Bug#6454). */ | |
2644 | if (EQ (window, selected_window) | |
d3d50620 DA |
2645 | && XBUFFER (w->buffer) == current_buffer) |
2646 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2647 | } |
2648 | break; | |
3f8ab7bd | 2649 | |
6b61353c | 2650 | case REDISPLAY_BUFFER_WINDOWS: |
d3d50620 | 2651 | if (EQ (w->buffer, obj)) |
6b61353c KH |
2652 | { |
2653 | mark_window_display_accurate (window, 0); | |
c98ff5dd | 2654 | w->update_mode_line = 1; |
6b61353c KH |
2655 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; |
2656 | ++update_mode_lines; | |
2657 | best_window = window; | |
2658 | } | |
2659 | break; | |
2660 | ||
3f8ab7bd RS |
2661 | /* Check for a window that has a killed buffer. */ |
2662 | case CHECK_ALL_WINDOWS: | |
d3d50620 | 2663 | if (! NILP (w->buffer) |
e578f381 | 2664 | && !BUFFER_LIVE_P (XBUFFER (w->buffer))) |
1088b922 | 2665 | emacs_abort (); |
118ea242 | 2666 | break; |
6bbd7a29 GM |
2667 | |
2668 | case WINDOW_LOOP_UNUSED: | |
2669 | break; | |
7ab12479 | 2670 | } |
7ab12479 | 2671 | } |
7ab12479 | 2672 | |
118ea242 | 2673 | UNGCPRO; |
7ab12479 | 2674 | return best_window; |
37962e60 | 2675 | } |
605be8af | 2676 | |
3f8ab7bd RS |
2677 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2678 | ||
e3b27b31 | 2679 | extern void check_all_windows (void) EXTERNALLY_VISIBLE; |
233a4a2c | 2680 | void |
971de7fb | 2681 | check_all_windows (void) |
3f8ab7bd RS |
2682 | { |
2683 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2684 | } | |
2685 | ||
a7ca3326 | 2686 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 0, 2, 0, |
fec89261 | 2687 | doc: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none. |
496e208e MR |
2688 | BUFFER-OR-NAME may be a buffer or a buffer name and defaults to |
2689 | the current buffer. | |
2690 | ||
2691 | The optional argument ALL-FRAMES specifies the frames to consider: | |
2692 | ||
2693 | - t means consider all windows on all existing frames. | |
2694 | ||
2695 | - `visible' means consider all windows on all visible frames. | |
2696 | ||
2697 | - 0 (the number zero) means consider all windows on all visible | |
2698 | and iconified frames. | |
2699 | ||
2700 | - A frame means consider all windows on that frame only. | |
2701 | ||
2702 | Any other value of ALL-FRAMES means consider all windows on the | |
2703 | selected frame and no others. */) | |
2704 | (Lisp_Object buffer_or_name, Lisp_Object all_frames) | |
7ab12479 | 2705 | { |
fec89261 MR |
2706 | Lisp_Object buffer; |
2707 | ||
2708 | if (NILP (buffer_or_name)) | |
2709 | buffer = Fcurrent_buffer (); | |
2710 | else | |
2711 | buffer = Fget_buffer (buffer_or_name); | |
2712 | ||
017b2bad | 2713 | if (BUFFERP (buffer)) |
496e208e | 2714 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, all_frames); |
7ab12479 JB |
2715 | else |
2716 | return Qnil; | |
2717 | } | |
2718 | ||
4b66faf3 | 2719 | static Lisp_Object |
1a13852e MR |
2720 | resize_root_window (Lisp_Object window, Lisp_Object delta, Lisp_Object horizontal, Lisp_Object ignore) |
2721 | { | |
5386012d | 2722 | return call4 (Qwindow_resize_root_window, window, delta, horizontal, ignore); |
1a13852e MR |
2723 | } |
2724 | ||
2725 | ||
2726 | DEFUN ("delete-other-windows-internal", Fdelete_other_windows_internal, | |
2727 | Sdelete_other_windows_internal, 0, 2, "", | |
2728 | doc: /* Make WINDOW fill its frame. | |
52162052 MR |
2729 | Only the frame WINDOW is on is affected. WINDOW must be a valid window |
2730 | and defaults to the selected one. | |
1a13852e | 2731 | |
be7f5545 MR |
2732 | Optional argument ROOT, if non-nil, must specify an internal window such |
2733 | that WINDOW is in its window subtree. If this is the case, replace ROOT | |
2734 | by WINDOW and leave alone any windows not part of ROOT's subtree. | |
1a13852e MR |
2735 | |
2736 | When WINDOW is live try to reduce display jumps by keeping the text | |
2737 | previously visible in WINDOW in the same place on the frame. Doing this | |
2738 | depends on the value of (window-start WINDOW), so if calling this | |
2739 | function in a program gives strange scrolling, make sure the | |
2740 | window-start value is reasonable when this function is called. */) | |
2741 | (Lisp_Object window, Lisp_Object root) | |
2742 | { | |
2743 | struct window *w, *r, *s; | |
2744 | struct frame *f; | |
46a4ce9e | 2745 | Lisp_Object sibling, pwindow, swindow IF_LINT (= Qnil), delta; |
c54aa166 | 2746 | ptrdiff_t startpos IF_LINT (= 0), startbyte IF_LINT (= 0); |
46a4ce9e | 2747 | int top IF_LINT (= 0), new_top, resize_failed; |
1a13852e | 2748 | |
52162052 | 2749 | w = decode_valid_window (window); |
1a13852e | 2750 | XSETWINDOW (window, w); |
d3d50620 | 2751 | f = XFRAME (w->frame); |
1a13852e MR |
2752 | |
2753 | if (NILP (root)) | |
2754 | /* ROOT is the frame's root window. */ | |
2755 | { | |
2756 | root = FRAME_ROOT_WINDOW (f); | |
2757 | r = XWINDOW (root); | |
2758 | } | |
2759 | else | |
2760 | /* ROOT must be an ancestor of WINDOW. */ | |
2761 | { | |
52162052 | 2762 | r = decode_valid_window (root); |
d3d50620 | 2763 | pwindow = XWINDOW (window)->parent; |
1a13852e MR |
2764 | while (!NILP (pwindow)) |
2765 | if (EQ (pwindow, root)) | |
2766 | break; | |
2767 | else | |
d3d50620 | 2768 | pwindow = XWINDOW (pwindow)->parent; |
1a13852e MR |
2769 | if (!EQ (pwindow, root)) |
2770 | error ("Specified root is not an ancestor of specified window"); | |
2771 | } | |
2772 | ||
2773 | if (EQ (window, root)) | |
2774 | /* A noop. */ | |
2775 | return Qnil; | |
2776 | /* I don't understand the "top > 0" part below. If we deal with a | |
2777 | standalone minibuffer it would have been caught by the preceding | |
2778 | test. */ | |
2779 | else if (MINI_WINDOW_P (w)) /* && top > 0) */ | |
2780 | error ("Can't expand minibuffer to full frame"); | |
2781 | ||
d3d50620 | 2782 | if (!NILP (w->buffer)) |
1a13852e | 2783 | { |
d3d50620 | 2784 | startpos = marker_position (w->start); |
c54aa166 | 2785 | startbyte = marker_byte_position (w->start); |
1a13852e MR |
2786 | top = WINDOW_TOP_EDGE_LINE (w) |
2787 | - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2788 | /* Make sure WINDOW is the frame's selected window. */ | |
2789 | if (!EQ (window, FRAME_SELECTED_WINDOW (f))) | |
2790 | { | |
d3d50620 | 2791 | if (EQ (selected_frame, w->frame)) |
1a13852e MR |
2792 | Fselect_window (window, Qnil); |
2793 | else | |
f00af5b1 | 2794 | fset_selected_window (f, window); |
1a13852e MR |
2795 | } |
2796 | } | |
2797 | else | |
2798 | { | |
be7f5545 MR |
2799 | /* See if the frame's selected window is a part of the window |
2800 | subtree rooted at WINDOW, by finding all the selected window's | |
2801 | parents and comparing each one with WINDOW. If it isn't we | |
2802 | need a new selected window for this frame. */ | |
1a13852e MR |
2803 | swindow = FRAME_SELECTED_WINDOW (f); |
2804 | while (1) | |
2805 | { | |
2806 | pwindow = swindow; | |
2807 | while (!NILP (pwindow) && !EQ (window, pwindow)) | |
d3d50620 | 2808 | pwindow = XWINDOW (pwindow)->parent; |
1a13852e MR |
2809 | |
2810 | if (EQ (window, pwindow)) | |
2811 | /* If WINDOW is an ancestor of SWINDOW, then SWINDOW is ok | |
2812 | as the new selected window. */ | |
2813 | break; | |
2814 | else | |
2815 | /* Else try the previous window of SWINDOW. */ | |
2816 | swindow = Fprevious_window (swindow, Qlambda, Qnil); | |
2817 | } | |
2818 | ||
2819 | if (!EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
2820 | { | |
d3d50620 | 2821 | if (EQ (selected_frame, w->frame)) |
1a13852e MR |
2822 | Fselect_window (swindow, Qnil); |
2823 | else | |
f00af5b1 | 2824 | fset_selected_window (f, swindow); |
1a13852e MR |
2825 | } |
2826 | } | |
2827 | ||
4d7e6e51 | 2828 | block_input (); |
4c5501e9 EZ |
2829 | if (!FRAME_INITIAL_P (f)) |
2830 | { | |
2831 | Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f); | |
2832 | ||
2833 | /* We are going to free the glyph matrices of WINDOW, and with | |
2834 | that we might lose any information about glyph rows that have | |
2835 | some of their glyphs highlighted in mouse face. (These rows | |
2836 | are marked with a non-zero mouse_face_p flag.) If WINDOW | |
2837 | indeed has some glyphs highlighted in mouse face, signal to | |
2838 | frame's up-to-date hook that mouse highlight was overwritten, | |
2839 | so that it will arrange for redisplaying the highlight. */ | |
2840 | if (EQ (hlinfo->mouse_face_window, window)) | |
2841 | { | |
2842 | hlinfo->mouse_face_beg_row = hlinfo->mouse_face_beg_col = -1; | |
2843 | hlinfo->mouse_face_end_row = hlinfo->mouse_face_end_col = -1; | |
2844 | hlinfo->mouse_face_window = Qnil; | |
2845 | } | |
a6b1c7cc | 2846 | } |
1a13852e MR |
2847 | free_window_matrices (r); |
2848 | ||
2849 | windows_or_buffers_changed++; | |
2850 | Vwindow_list = Qnil; | |
2851 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
46a4ce9e | 2852 | resize_failed = 0; |
1a13852e | 2853 | |
d3d50620 | 2854 | if (NILP (w->buffer)) |
1a13852e | 2855 | { |
be7f5545 | 2856 | /* Resize child windows vertically. */ |
d3d50620 DA |
2857 | XSETINT (delta, XINT (r->total_lines) |
2858 | - XINT (w->total_lines)); | |
e8c17b81 | 2859 | wset_top_line (w, r->top_line); |
1a13852e | 2860 | resize_root_window (window, delta, Qnil, Qnil); |
d615d6d2 MR |
2861 | if (window_resize_check (w, 0)) |
2862 | window_resize_apply (w, 0); | |
1a13852e MR |
2863 | else |
2864 | { | |
2865 | resize_root_window (window, delta, Qnil, Qt); | |
d615d6d2 MR |
2866 | if (window_resize_check (w, 0)) |
2867 | window_resize_apply (w, 0); | |
1a13852e MR |
2868 | else |
2869 | resize_failed = 1; | |
2870 | } | |
2871 | ||
be7f5545 | 2872 | /* Resize child windows horizontally. */ |
1a13852e MR |
2873 | if (!resize_failed) |
2874 | { | |
e8c17b81 | 2875 | wset_left_col (w, r->left_col); |
f00af5b1 PE |
2876 | XSETINT (delta, |
2877 | XINT (r->total_cols) - XINT (w->total_cols)); | |
e8c17b81 | 2878 | wset_left_col (w, r->left_col); |
1a13852e | 2879 | resize_root_window (window, delta, Qt, Qnil); |
d615d6d2 MR |
2880 | if (window_resize_check (w, 1)) |
2881 | window_resize_apply (w, 1); | |
1a13852e MR |
2882 | else |
2883 | { | |
2884 | resize_root_window (window, delta, Qt, Qt); | |
d615d6d2 MR |
2885 | if (window_resize_check (w, 1)) |
2886 | window_resize_apply (w, 1); | |
1a13852e MR |
2887 | else |
2888 | resize_failed = 1; | |
2889 | } | |
2890 | } | |
2891 | ||
2892 | if (resize_failed) | |
2893 | /* Play safe, if we still can ... */ | |
2894 | { | |
2895 | window = swindow; | |
2896 | w = XWINDOW (window); | |
2897 | } | |
2898 | } | |
2899 | ||
2900 | /* Cleanly unlink WINDOW from window-tree. */ | |
d3d50620 | 2901 | if (!NILP (w->prev)) |
1a13852e MR |
2902 | /* Get SIBLING above (on the left of) WINDOW. */ |
2903 | { | |
d3d50620 | 2904 | sibling = w->prev; |
1a13852e | 2905 | s = XWINDOW (sibling); |
e8c17b81 | 2906 | wset_next (s, w->next); |
d3d50620 | 2907 | if (!NILP (s->next)) |
e8c17b81 | 2908 | wset_prev (XWINDOW (s->next), sibling); |
1a13852e MR |
2909 | } |
2910 | else | |
2911 | /* Get SIBLING below (on the right of) WINDOW. */ | |
2912 | { | |
d3d50620 | 2913 | sibling = w->next; |
1a13852e | 2914 | s = XWINDOW (sibling); |
e8c17b81 | 2915 | wset_prev (s, Qnil); |
d3d50620 | 2916 | if (!NILP (XWINDOW (w->parent)->vchild)) |
e8c17b81 | 2917 | wset_vchild (XWINDOW (w->parent), sibling); |
1a13852e | 2918 | else |
e8c17b81 | 2919 | wset_hchild (XWINDOW (w->parent), sibling); |
1a13852e MR |
2920 | } |
2921 | ||
be7f5545 | 2922 | /* Delete ROOT and all child windows of ROOT. */ |
d3d50620 | 2923 | if (!NILP (r->vchild)) |
1a13852e | 2924 | { |
d3d50620 | 2925 | delete_all_child_windows (r->vchild); |
e8c17b81 | 2926 | wset_vchild (r, Qnil); |
1a13852e | 2927 | } |
d3d50620 | 2928 | else if (!NILP (r->hchild)) |
1a13852e | 2929 | { |
d3d50620 | 2930 | delete_all_child_windows (r->hchild); |
e8c17b81 | 2931 | wset_hchild (r, Qnil); |
1a13852e MR |
2932 | } |
2933 | ||
2934 | replace_window (root, window, 1); | |
2935 | ||
1a13852e | 2936 | /* This must become SWINDOW anyway ....... */ |
d3d50620 | 2937 | if (!NILP (w->buffer) && !resize_failed) |
1a13852e MR |
2938 | { |
2939 | /* Try to minimize scrolling, by setting the window start to the | |
2940 | point will cause the text at the old window start to be at the | |
2941 | same place on the frame. But don't try to do this if the | |
2942 | window start is outside the visible portion (as might happen | |
2943 | when the display is not current, due to typeahead). */ | |
2944 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2945 | if (new_top != top | |
d3d50620 DA |
2946 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) |
2947 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) | |
1a13852e MR |
2948 | { |
2949 | struct position pos; | |
2950 | struct buffer *obuf = current_buffer; | |
2951 | ||
d3d50620 | 2952 | Fset_buffer (w->buffer); |
1a13852e MR |
2953 | /* This computation used to temporarily move point, but that |
2954 | can have unwanted side effects due to text properties. */ | |
c54aa166 | 2955 | pos = *vmotion (startpos, startbyte, -top, w); |
1a13852e | 2956 | |
d3d50620 | 2957 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
9d93ce29 | 2958 | w->window_end_valid = 0; |
c98ff5dd DA |
2959 | w->start_at_line_beg = (pos.bytepos == BEGV_BYTE |
2960 | || FETCH_BYTE (pos.bytepos - 1) == '\n'); | |
1a13852e MR |
2961 | /* We need to do this, so that the window-scroll-functions |
2962 | get called. */ | |
c98ff5dd | 2963 | w->optional_new_start = 1; |
1a13852e MR |
2964 | |
2965 | set_buffer_internal (obuf); | |
2966 | } | |
2967 | } | |
2968 | ||
2969 | adjust_glyphs (f); | |
4d7e6e51 | 2970 | unblock_input (); |
1a13852e MR |
2971 | |
2972 | run_window_configuration_change_hook (f); | |
2973 | ||
2974 | return Qnil; | |
2975 | } | |
2976 | ||
2977 | ||
9397e56f MR |
2978 | void |
2979 | replace_buffer_in_windows (Lisp_Object buffer) | |
7ab12479 | 2980 | { |
9397e56f | 2981 | call1 (Qreplace_buffer_in_windows, buffer); |
7ab12479 JB |
2982 | } |
2983 | ||
c6afe371 DA |
2984 | /* If BUFFER is shown in a window, safely replace it with some other |
2985 | buffer in all windows of all frames, even those on other keyboards. */ | |
ff58478b RS |
2986 | |
2987 | void | |
9397e56f | 2988 | replace_buffer_in_windows_safely (Lisp_Object buffer) |
ff58478b | 2989 | { |
c6afe371 DA |
2990 | if (buffer_window_count (XBUFFER (buffer))) |
2991 | { | |
2992 | Lisp_Object tail, frame; | |
ff58478b | 2993 | |
c6afe371 DA |
2994 | /* A single call to window_loop won't do the job because it only |
2995 | considers frames on the current keyboard. So loop manually over | |
2996 | frames, and handle each one. */ | |
2997 | FOR_EACH_FRAME (tail, frame) | |
2998 | window_loop (REPLACE_BUFFER_IN_WINDOWS_SAFELY, buffer, 1, frame); | |
2999 | } | |
ff58478b | 3000 | } |
c6afe371 | 3001 | |
a481b3ea JB |
3002 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the |
3003 | minimum allowable size. */ | |
5500c422 | 3004 | |
605be8af | 3005 | void |
971de7fb | 3006 | check_frame_size (FRAME_PTR frame, int *rows, int *cols) |
a481b3ea | 3007 | { |
628df3bf | 3008 | /* For height, we have to see: |
54b8bcb5 RS |
3009 | how many windows the frame has at minimum (one or two), |
3010 | and whether it has a menu bar or other special stuff at the top. */ | |
3011 | int min_height | |
3012 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
3013 | ? MIN_SAFE_WINDOW_HEIGHT | |
3014 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 3015 | |
5500c422 GM |
3016 | if (FRAME_TOP_MARGIN (frame) > 0) |
3017 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
3018 | |
3019 | if (*rows < min_height) | |
3020 | *rows = min_height; | |
3021 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
3022 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
3023 | } | |
3024 | ||
79fd290e | 3025 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
3026 | Return 1 if window width is ok after adjustment; 0 if window |
3027 | is still too narrow. */ | |
3028 | ||
3029 | static int | |
971de7fb | 3030 | adjust_window_margins (struct window *w) |
949cf20f KS |
3031 | { |
3032 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
3033 | - WINDOW_FRINGE_COLS (w) | |
3034 | - WINDOW_SCROLL_BAR_COLS (w)); | |
3035 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
3036 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
3037 | ||
3038 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
3039 | return 1; | |
3040 | ||
3041 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
3042 | return 0; | |
3043 | ||
3044 | /* Window's text area is too narrow, but reducing the window | |
3045 | margins will fix that. */ | |
3046 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
3047 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
3048 | { | |
3049 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
077288cf | 3050 | { |
e8c17b81 PE |
3051 | wset_left_margin_cols (w, make_number (margin_cols / 2)); |
3052 | wset_right_margin_cols (w, make_number (margin_cols / 2)); | |
077288cf | 3053 | } |
949cf20f | 3054 | else |
e8c17b81 | 3055 | wset_right_margin_cols (w, make_number (margin_cols)); |
949cf20f KS |
3056 | } |
3057 | else | |
e8c17b81 | 3058 | wset_left_margin_cols (w, make_number (margin_cols)); |
949cf20f KS |
3059 | return 1; |
3060 | } | |
562dd5e9 | 3061 | \f |
9397e56f MR |
3062 | /* The following three routines are needed for running a window's |
3063 | configuration change hook. */ | |
562dd5e9 MR |
3064 | static void |
3065 | run_funs (Lisp_Object funs) | |
3066 | { | |
3067 | for (; CONSP (funs); funs = XCDR (funs)) | |
3068 | if (!EQ (XCAR (funs), Qt)) | |
3069 | call0 (XCAR (funs)); | |
3070 | } | |
6b61353c | 3071 | |
9397e56f MR |
3072 | static Lisp_Object |
3073 | select_window_norecord (Lisp_Object window) | |
3074 | { | |
3075 | return WINDOW_LIVE_P (window) | |
3076 | ? Fselect_window (window, Qt) : selected_window; | |
3077 | } | |
3078 | ||
3079 | static Lisp_Object | |
3080 | select_frame_norecord (Lisp_Object frame) | |
3081 | { | |
3082 | return FRAME_LIVE_P (XFRAME (frame)) | |
3083 | ? Fselect_frame (frame, Qt) : selected_frame; | |
3084 | } | |
6b61353c | 3085 | |
562dd5e9 MR |
3086 | void |
3087 | run_window_configuration_change_hook (struct frame *f) | |
3088 | { | |
d311d28c | 3089 | ptrdiff_t count = SPECPDL_INDEX (); |
562dd5e9 MR |
3090 | Lisp_Object frame, global_wcch |
3091 | = Fdefault_value (Qwindow_configuration_change_hook); | |
3092 | XSETFRAME (frame, f); | |
6b61353c | 3093 | |
d1f55f16 | 3094 | if (NILP (Vrun_hooks) || !NILP (inhibit_lisp_code)) |
562dd5e9 | 3095 | return; |
6b61353c | 3096 | |
562dd5e9 MR |
3097 | /* Use the right buffer. Matters when running the local hooks. */ |
3098 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
6b61353c | 3099 | { |
66322887 | 3100 | record_unwind_current_buffer (); |
562dd5e9 MR |
3101 | Fset_buffer (Fwindow_buffer (Qnil)); |
3102 | } | |
6a44ffb3 | 3103 | |
1a13852e MR |
3104 | if (SELECTED_FRAME () != f) |
3105 | { | |
3106 | record_unwind_protect (select_frame_norecord, Fselected_frame ()); | |
3107 | select_frame_norecord (frame); | |
3108 | } | |
3109 | ||
6a44ffb3 SM |
3110 | /* Look for buffer-local values. */ |
3111 | { | |
3112 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
3113 | for (; CONSP (windows); windows = XCDR (windows)) | |
3114 | { | |
3115 | Lisp_Object window = XCAR (windows); | |
3116 | Lisp_Object buffer = Fwindow_buffer (window); | |
3117 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
3118 | buffer))) | |
3119 | { | |
d311d28c | 3120 | ptrdiff_t inner_count = SPECPDL_INDEX (); |
6a44ffb3 SM |
3121 | record_unwind_protect (select_window_norecord, Fselected_window ()); |
3122 | select_window_norecord (window); | |
3123 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
3124 | buffer)); | |
46a4ce9e | 3125 | unbind_to (inner_count, Qnil); |
fec89261 | 3126 | } |
6a44ffb3 SM |
3127 | } |
3128 | } | |
047aaeb9 | 3129 | |
6a44ffb3 SM |
3130 | run_funs (global_wcch); |
3131 | unbind_to (count, Qnil); | |
ef264c42 SM |
3132 | } |
3133 | ||
1a13852e | 3134 | DEFUN ("run-window-configuration-change-hook", Frun_window_configuration_change_hook, |
d9f07150 | 3135 | Srun_window_configuration_change_hook, 0, 1, 0, |
68f8f1c0 | 3136 | doc: /* Run `window-configuration-change-hook' for FRAME. |
d9f07150 | 3137 | If FRAME is omitted or nil, it defaults to the selected frame. */) |
c4b6914d | 3138 | (Lisp_Object frame) |
1a13852e | 3139 | { |
d9f07150 | 3140 | run_window_configuration_change_hook (decode_live_frame (frame)); |
1a13852e MR |
3141 | return Qnil; |
3142 | } | |
3143 | ||
5500c422 GM |
3144 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3145 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3146 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3147 | margins, fringes, and scroll-bar settings of the window are not | |
3148 | reset from the buffer's local settings. */ | |
7ab12479 | 3149 | |
5500c422 | 3150 | void |
748fa866 DA |
3151 | set_window_buffer (Lisp_Object window, Lisp_Object buffer, |
3152 | bool run_hooks_p, bool keep_margins_p) | |
5500c422 GM |
3153 | { |
3154 | struct window *w = XWINDOW (window); | |
3155 | struct buffer *b = XBUFFER (buffer); | |
d311d28c | 3156 | ptrdiff_t count = SPECPDL_INDEX (); |
d3d50620 | 3157 | int samebuf = EQ (buffer, w->buffer); |
7ab12479 | 3158 | |
e8c17b81 | 3159 | wset_buffer (w, buffer); |
86e48436 RS |
3160 | |
3161 | if (EQ (window, selected_window)) | |
39eb03f1 | 3162 | bset_last_selected_window (b, window); |
beb4e312 | 3163 | |
c49a0495 KS |
3164 | /* Let redisplay errors through. */ |
3165 | b->display_error_modiff = 0; | |
3166 | ||
beb4e312 | 3167 | /* Update time stamps of buffer display. */ |
4b4deea2 | 3168 | if (INTEGERP (BVAR (b, display_count))) |
39eb03f1 PE |
3169 | bset_display_count (b, make_number (XINT (BVAR (b, display_count)) + 1)); |
3170 | bset_display_time (b, Fcurrent_time ()); | |
86e48436 | 3171 | |
e8c17b81 PE |
3172 | wset_window_end_pos (w, make_number (0)); |
3173 | wset_window_end_vpos (w, make_number (0)); | |
72af86bd | 3174 | memset (&w->last_cursor, 0, sizeof w->last_cursor); |
9d93ce29 | 3175 | |
c3b232e4 | 3176 | if (!(keep_margins_p && samebuf)) |
23fe745a | 3177 | { /* If we're not actually changing the buffer, don't reset hscroll and |
c3b232e4 SM |
3178 | vscroll. This case happens for example when called from |
3179 | change_frame_size_1, where we use a dummy call to | |
3180 | Fset_window_buffer on the frame's selected window (and no other) | |
3181 | just in order to run window-configuration-change-hook. | |
3182 | Resetting hscroll and vscroll here is problematic for things like | |
3183 | image-mode and doc-view-mode since it resets the image's position | |
3184 | whenever we resize the frame. */ | |
80b00b08 | 3185 | w->hscroll = w->min_hscroll = 0; |
c3b232e4 | 3186 | w->vscroll = 0; |
d3d50620 DA |
3187 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
3188 | set_marker_restricted (w->start, | |
c3b232e4 SM |
3189 | make_number (b->last_window_start), |
3190 | buffer); | |
c98ff5dd DA |
3191 | w->start_at_line_beg = 0; |
3192 | w->force_start = 0; | |
80b00b08 DA |
3193 | w->last_modified = 0; |
3194 | w->last_overlay_modified = 0; | |
c3b232e4 SM |
3195 | } |
3196 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
3197 | I doubt it's worth the trouble. */ | |
7ab12479 | 3198 | windows_or_buffers_changed++; |
5b03d3c0 | 3199 | |
da39107c | 3200 | /* We must select BUFFER for running the window-scroll-functions. */ |
5b03d3c0 RS |
3201 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3202 | because that might itself be a local variable. */ | |
da39107c | 3203 | if (window_initialized) |
5b03d3c0 | 3204 | { |
66322887 | 3205 | record_unwind_current_buffer (); |
5b03d3c0 RS |
3206 | Fset_buffer (buffer); |
3207 | } | |
3208 | ||
d3d50620 | 3209 | XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type); |
a1562258 | 3210 | |
949cf20f KS |
3211 | if (!keep_margins_p) |
3212 | { | |
3213 | /* Set left and right marginal area width etc. from buffer. */ | |
3214 | ||
79fd290e | 3215 | /* This may call adjust_window_margins three times, so |
949cf20f | 3216 | temporarily disable window margins. */ |
d3d50620 DA |
3217 | Lisp_Object save_left = w->left_margin_cols; |
3218 | Lisp_Object save_right = w->right_margin_cols; | |
6b61353c | 3219 | |
e8c17b81 PE |
3220 | wset_left_margin_cols (w, Qnil); |
3221 | wset_right_margin_cols (w, Qnil); | |
949cf20f KS |
3222 | |
3223 | Fset_window_fringes (window, | |
4b4deea2 TT |
3224 | BVAR (b, left_fringe_width), BVAR (b, right_fringe_width), |
3225 | BVAR (b, fringes_outside_margins)); | |
949cf20f KS |
3226 | |
3227 | Fset_window_scroll_bars (window, | |
4b4deea2 TT |
3228 | BVAR (b, scroll_bar_width), |
3229 | BVAR (b, vertical_scroll_bar_type), Qnil); | |
949cf20f | 3230 | |
e8c17b81 PE |
3231 | wset_left_margin_cols (w, save_left); |
3232 | wset_right_margin_cols (w, save_right); | |
6b61353c | 3233 | |
949cf20f | 3234 | Fset_window_margins (window, |
4b4deea2 | 3235 | BVAR (b, left_margin_cols), BVAR (b, right_margin_cols)); |
949cf20f | 3236 | } |
7ab12479 | 3237 | |
5500c422 GM |
3238 | if (run_hooks_p) |
3239 | { | |
3240 | if (! NILP (Vwindow_scroll_functions)) | |
3241 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
d3d50620 | 3242 | Fmarker_position (w->start)); |
ef264c42 | 3243 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
5500c422 | 3244 | } |
543f5fb1 | 3245 | |
5b03d3c0 | 3246 | unbind_to (count, Qnil); |
5500c422 | 3247 | } |
5b03d3c0 | 3248 | |
a7ca3326 | 3249 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
d653c8cc | 3250 | doc: /* Make WINDOW display BUFFER-OR-NAME as its contents. |
52162052 | 3251 | WINDOW must be a live window and defaults to the selected one. |
9397e56f MR |
3252 | BUFFER-OR-NAME must be a buffer or the name of an existing buffer. |
3253 | ||
3254 | Optional third argument KEEP-MARGINS non-nil means that WINDOW's current | |
3255 | display margins, fringe widths, and scroll bar settings are preserved; | |
3256 | the default is to reset these from the local settings for BUFFER-OR-NAME | |
3257 | or the frame defaults. Return nil. | |
d653c8cc | 3258 | |
7bfac547 MR |
3259 | This function throws an error when WINDOW is strongly dedicated to its |
3260 | buffer (that is `window-dedicated-p' returns t for WINDOW) and does not | |
3261 | already display BUFFER-OR-NAME. | |
6cb4a892 | 3262 | |
8fef9de1 MR |
3263 | This function runs `window-scroll-functions' before running |
3264 | `window-configuration-change-hook'. */) | |
5842a27b | 3265 | (register Lisp_Object window, Lisp_Object buffer_or_name, Lisp_Object keep_margins) |
5500c422 | 3266 | { |
d653c8cc | 3267 | register Lisp_Object tem, buffer; |
52162052 | 3268 | register struct window *w = decode_live_window (window); |
5500c422 | 3269 | |
bed0c171 | 3270 | XSETWINDOW (window, w); |
d653c8cc | 3271 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 3272 | CHECK_BUFFER (buffer); |
e578f381 | 3273 | if (!BUFFER_LIVE_P (XBUFFER (buffer))) |
5500c422 GM |
3274 | error ("Attempt to display deleted buffer"); |
3275 | ||
d3d50620 | 3276 | tem = w->buffer; |
aac0c6e3 MR |
3277 | if (NILP (tem)) |
3278 | error ("Window is deleted"); | |
822995f8 | 3279 | else |
5500c422 | 3280 | { |
9397e56f MR |
3281 | if (!EQ (tem, buffer)) |
3282 | { | |
d3d50620 | 3283 | if (EQ (w->dedicated, Qt)) |
9397e56f MR |
3284 | /* WINDOW is strongly dedicated to its buffer, signal an |
3285 | error. */ | |
3286 | error ("Window is dedicated to `%s'", SDATA (BVAR (XBUFFER (tem), name))); | |
3287 | else | |
3288 | /* WINDOW is weakly dedicated to its buffer, reset | |
e4769531 | 3289 | dedication. */ |
e8c17b81 | 3290 | wset_dedicated (w, Qnil); |
9397e56f MR |
3291 | |
3292 | call1 (Qrecord_window_buffer, window); | |
3293 | } | |
5500c422 GM |
3294 | |
3295 | unshow_buffer (w); | |
3296 | } | |
3297 | ||
949cf20f | 3298 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 | 3299 | |
9397e56f | 3300 | return Qnil; |
c6932ecd | 3301 | } |
b7354ddf | 3302 | \f |
7e5cf297 | 3303 | static Lisp_Object |
971de7fb | 3304 | display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, Lisp_Object override_frame) |
d07f802a | 3305 | { |
87478b52 | 3306 | return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); |
d07f802a RS |
3307 | } |
3308 | ||
6b61353c KH |
3309 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, |
3310 | 0, 1, 0, | |
5a1048a5 | 3311 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 3312 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3313 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c | 3314 | displaying that buffer. */) |
5842a27b | 3315 | (Lisp_Object object) |
6b61353c KH |
3316 | { |
3317 | if (NILP (object)) | |
3318 | { | |
3319 | windows_or_buffers_changed++; | |
3320 | update_mode_lines++; | |
3321 | return Qt; | |
3322 | } | |
3323 | ||
3324 | if (WINDOWP (object)) | |
3325 | { | |
3326 | struct window *w = XWINDOW (object); | |
3327 | mark_window_display_accurate (object, 0); | |
c98ff5dd | 3328 | w->update_mode_line = 1; |
d3d50620 DA |
3329 | if (BUFFERP (w->buffer)) |
3330 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
6b61353c KH |
3331 | ++update_mode_lines; |
3332 | return Qt; | |
3333 | } | |
0cc1039f | 3334 | |
6b61353c KH |
3335 | if (STRINGP (object)) |
3336 | object = Fget_buffer (object); | |
c6afe371 DA |
3337 | if (BUFFERP (object) && BUFFER_LIVE_P (XBUFFER (object)) |
3338 | && buffer_window_count (XBUFFER (object))) | |
6b61353c | 3339 | { |
c6afe371 DA |
3340 | /* If buffer is live and shown in at least one window, find |
3341 | all windows showing this buffer and force update of them. */ | |
6b61353c KH |
3342 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); |
3343 | return NILP (object) ? Qnil : Qt; | |
3344 | } | |
3345 | ||
3346 | /* If nothing suitable was found, just return. | |
3347 | We could signal an error, but this feature will typically be used | |
3348 | asynchronously in timers or process sentinels, so we don't. */ | |
3349 | return Qnil; | |
3350 | } | |
3351 | ||
1f76f6f5 | 3352 | /* Obsolete since 24.3. */ |
7ab12479 | 3353 | void |
971de7fb | 3354 | temp_output_buffer_show (register Lisp_Object buf) |
7ab12479 JB |
3355 | { |
3356 | register struct buffer *old = current_buffer; | |
3357 | register Lisp_Object window; | |
3358 | register struct window *w; | |
3359 | ||
39eb03f1 | 3360 | bset_directory (XBUFFER (buf), BVAR (current_buffer, directory)); |
bccd3dd1 | 3361 | |
7ab12479 | 3362 | Fset_buffer (buf); |
c6367666 | 3363 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3364 | BEGV = BEG; |
3365 | ZV = Z; | |
3366 | SET_PT (BEG); | |
7ab12479 JB |
3367 | set_buffer_internal (old); |
3368 | ||
e67a1dea | 3369 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3370 | call1 (Vtemp_buffer_show_function, buf); |
3371 | else | |
3372 | { | |
4ee88440 | 3373 | window = display_buffer (buf, Qnil, Qnil); |
7ab12479 | 3374 | |
d3d50620 | 3375 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3376 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3377 | Vminibuf_scroll_window = window; |
3378 | w = XWINDOW (window); | |
80b00b08 DA |
3379 | w->hscroll = 0; |
3380 | w->min_hscroll = 0; | |
d3d50620 DA |
3381 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3382 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3383 | |
beb4e312 | 3384 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3385 | and its buffer current. */ |
dee091a3 | 3386 | { |
d311d28c | 3387 | ptrdiff_t count = SPECPDL_INDEX (); |
dee091a3 JD |
3388 | Lisp_Object prev_window, prev_buffer; |
3389 | prev_window = selected_window; | |
3390 | XSETBUFFER (prev_buffer, old); | |
3391 | ||
3392 | /* Select the window that was chosen, for running the hook. | |
3393 | Note: Both Fselect_window and select_window_norecord may | |
3394 | set-buffer to the buffer displayed in the window, | |
3395 | so we need to save the current buffer. --stef */ | |
3396 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3397 | record_unwind_protect (select_window_norecord, prev_window); | |
3398 | Fselect_window (window, Qt); | |
d3d50620 | 3399 | Fset_buffer (w->buffer); |
dee091a3 JD |
3400 | Frun_hooks (1, &Qtemp_buffer_show_hook); |
3401 | unbind_to (count, Qnil); | |
3402 | } | |
2cccc823 | 3403 | } |
7ab12479 JB |
3404 | } |
3405 | \f | |
1a13852e MR |
3406 | /* Make new window, have it replace WINDOW in window-tree, and make |
3407 | WINDOW its only vertical child (HORFLAG 1 means make WINDOW its only | |
3408 | horizontal child). */ | |
3409 | static void | |
748fa866 | 3410 | make_parent_window (Lisp_Object window, bool horflag) |
1a13852e MR |
3411 | { |
3412 | Lisp_Object parent; | |
3413 | register struct window *o, *p; | |
1a13852e MR |
3414 | |
3415 | o = XWINDOW (window); | |
3416 | p = allocate_window (); | |
aa754e6a | 3417 | memcpy ((char *) p + sizeof (struct vectorlike_header), |
62efea5e | 3418 | (char *) o + sizeof (struct vectorlike_header), |
663e2b3f | 3419 | word_size * VECSIZE (struct window)); |
98a07056 DA |
3420 | /* P's buffer slot may change from nil to a buffer. */ |
3421 | adjust_window_count (p, 1); | |
1a13852e MR |
3422 | XSETWINDOW (parent, p); |
3423 | ||
1a13852e MR |
3424 | replace_window (window, parent, 1); |
3425 | ||
e8c17b81 PE |
3426 | wset_next (o, Qnil); |
3427 | wset_prev (o, Qnil); | |
3428 | wset_parent (o, parent); | |
1a13852e | 3429 | |
e8c17b81 PE |
3430 | wset_hchild (p, horflag ? window : Qnil); |
3431 | wset_vchild (p, horflag ? Qnil : window); | |
3432 | wset_start (p, Qnil); | |
3433 | wset_pointm (p, Qnil); | |
3434 | wset_buffer (p, Qnil); | |
3435 | wset_combination_limit (p, Qnil); | |
3436 | wset_window_parameters (p, Qnil); | |
1a13852e MR |
3437 | } |
3438 | ||
496e208e MR |
3439 | /* Make new window from scratch. */ |
3440 | Lisp_Object | |
3441 | make_window (void) | |
3442 | { | |
3443 | Lisp_Object window; | |
3444 | register struct window *w; | |
3445 | ||
3446 | w = allocate_window (); | |
62efea5e DA |
3447 | /* Initialize Lisp data. Note that allocate_window initializes all |
3448 | Lisp data to nil, so do it only for slots which should not be nil. */ | |
e8c17b81 PE |
3449 | wset_left_col (w, make_number (0)); |
3450 | wset_top_line (w, make_number (0)); | |
3451 | wset_total_lines (w, make_number (0)); | |
3452 | wset_total_cols (w, make_number (0)); | |
3453 | wset_normal_lines (w, make_float (1.0)); | |
3454 | wset_normal_cols (w, make_float (1.0)); | |
3455 | wset_new_total (w, make_number (0)); | |
3456 | wset_new_normal (w, make_number (0)); | |
3457 | wset_start (w, Fmake_marker ()); | |
3458 | wset_pointm (w, Fmake_marker ()); | |
3459 | wset_vertical_scroll_bar_type (w, Qt); | |
3460 | wset_window_end_pos (w, make_number (0)); | |
3461 | wset_window_end_vpos (w, make_number (0)); | |
e99f70c8 SM |
3462 | /* These Lisp fields are marked specially so they're not set to nil by |
3463 | allocate_window. */ | |
3464 | wset_prev_buffers (w, Qnil); | |
3465 | wset_next_buffers (w, Qnil); | |
62efea5e DA |
3466 | |
3467 | /* Initialize non-Lisp data. Note that allocate_window zeroes out all | |
3468 | non-Lisp data, so do it only for slots which should not be zero. */ | |
496e208e | 3469 | w->nrows_scale_factor = w->ncols_scale_factor = 1; |
496e208e MR |
3470 | w->phys_cursor_type = -1; |
3471 | w->phys_cursor_width = -1; | |
422ff52b | 3472 | w->column_number_displayed = -1; |
62efea5e | 3473 | |
496e208e MR |
3474 | /* Reset window_list. */ |
3475 | Vwindow_list = Qnil; | |
3476 | /* Return window. */ | |
3477 | XSETWINDOW (window, w); | |
3478 | return window; | |
3479 | } | |
3480 | \f | |
3481 | DEFUN ("set-window-new-total", Fset_window_new_total, Sset_window_new_total, 2, 3, 0, | |
3482 | doc: /* Set new total size of WINDOW to SIZE. | |
52162052 | 3483 | WINDOW must be a valid window and defaults to the selected one. |
496e208e MR |
3484 | Return SIZE. |
3485 | ||
3486 | Optional argument ADD non-nil means add SIZE to the new total size of | |
3487 | WINDOW and return the sum. | |
3488 | ||
be7f5545 | 3489 | Note: This function does not operate on any child windows of WINDOW. */) |
496e208e MR |
3490 | (Lisp_Object window, Lisp_Object size, Lisp_Object add) |
3491 | { | |
52162052 | 3492 | struct window *w = decode_valid_window (window); |
496e208e MR |
3493 | |
3494 | CHECK_NUMBER (size); | |
3495 | if (NILP (add)) | |
e8c17b81 | 3496 | wset_new_total (w, size); |
496e208e | 3497 | else |
e8c17b81 | 3498 | wset_new_total (w, make_number (XINT (w->new_total) + XINT (size))); |
496e208e | 3499 | |
d3d50620 | 3500 | return w->new_total; |
496e208e MR |
3501 | } |
3502 | ||
3503 | DEFUN ("set-window-new-normal", Fset_window_new_normal, Sset_window_new_normal, 1, 2, 0, | |
3504 | doc: /* Set new normal size of WINDOW to SIZE. | |
52162052 | 3505 | WINDOW must be a valid window and defaults to the selected one. |
496e208e MR |
3506 | Return SIZE. |
3507 | ||
be7f5545 | 3508 | Note: This function does not operate on any child windows of WINDOW. */) |
496e208e MR |
3509 | (Lisp_Object window, Lisp_Object size) |
3510 | { | |
e8c17b81 PE |
3511 | wset_new_normal (decode_valid_window (window), size); |
3512 | return size; | |
7ab12479 JB |
3513 | } |
3514 | ||
1a13852e MR |
3515 | /* Return 1 if setting w->total_lines (w->total_cols if HORFLAG is |
3516 | non-zero) to w->new_total would result in correct heights (widths) | |
be7f5545 | 3517 | for window W and recursively all child windows of W. |
1a13852e MR |
3518 | |
3519 | Note: This function does not check any of `window-fixed-size-p', | |
3520 | `window-min-height' or `window-min-width'. It does check that window | |
3521 | sizes do not drop below one line (two columns). */ | |
4b66faf3 | 3522 | static int |
748fa866 | 3523 | window_resize_check (struct window *w, bool horflag) |
1a13852e MR |
3524 | { |
3525 | struct window *c; | |
3526 | ||
d3d50620 | 3527 | if (!NILP (w->vchild)) |
1a13852e MR |
3528 | /* W is a vertical combination. */ |
3529 | { | |
d3d50620 | 3530 | c = XWINDOW (w->vchild); |
1a13852e | 3531 | if (horflag) |
be7f5545 | 3532 | /* All child windows of W must have the same width as W. */ |
1a13852e MR |
3533 | { |
3534 | while (c) | |
3535 | { | |
d3d50620 | 3536 | if ((XINT (c->new_total) != XINT (w->new_total)) |
d615d6d2 | 3537 | || !window_resize_check (c, horflag)) |
1a13852e | 3538 | return 0; |
d3d50620 | 3539 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3540 | } |
3541 | return 1; | |
3542 | } | |
3543 | else | |
be7f5545 MR |
3544 | /* The sum of the heights of the child windows of W must equal |
3545 | W's height. */ | |
1a13852e MR |
3546 | { |
3547 | int sum_of_sizes = 0; | |
3548 | while (c) | |
3549 | { | |
d615d6d2 | 3550 | if (!window_resize_check (c, horflag)) |
1a13852e | 3551 | return 0; |
d3d50620 DA |
3552 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); |
3553 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e | 3554 | } |
d3d50620 | 3555 | return (sum_of_sizes == XINT (w->new_total)); |
1a13852e MR |
3556 | } |
3557 | } | |
d3d50620 | 3558 | else if (!NILP (w->hchild)) |
1a13852e MR |
3559 | /* W is a horizontal combination. */ |
3560 | { | |
d3d50620 | 3561 | c = XWINDOW (w->hchild); |
1a13852e | 3562 | if (horflag) |
be7f5545 | 3563 | /* The sum of the widths of the child windows of W must equal W's |
1a13852e MR |
3564 | width. */ |
3565 | { | |
3566 | int sum_of_sizes = 0; | |
3567 | while (c) | |
3568 | { | |
d615d6d2 | 3569 | if (!window_resize_check (c, horflag)) |
1a13852e | 3570 | return 0; |
d3d50620 DA |
3571 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); |
3572 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e | 3573 | } |
d3d50620 | 3574 | return (sum_of_sizes == XINT (w->new_total)); |
1a13852e MR |
3575 | } |
3576 | else | |
be7f5545 | 3577 | /* All child windows of W must have the same height as W. */ |
1a13852e MR |
3578 | { |
3579 | while (c) | |
3580 | { | |
d3d50620 | 3581 | if ((XINT (c->new_total) != XINT (w->new_total)) |
d615d6d2 | 3582 | || !window_resize_check (c, horflag)) |
1a13852e | 3583 | return 0; |
d3d50620 | 3584 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3585 | } |
3586 | return 1; | |
3587 | } | |
3588 | } | |
3589 | else | |
3590 | /* A leaf window. Make sure it's not too small. The following | |
3591 | hardcodes the values of `window-safe-min-width' (2) and | |
3592 | `window-safe-min-height' (1) which are defined in window.el. */ | |
d3d50620 | 3593 | return XINT (w->new_total) >= (horflag ? 2 : 1); |
1a13852e MR |
3594 | } |
3595 | ||
3596 | /* Set w->total_lines (w->total_cols if HORIZONTAL is non-zero) to | |
be7f5545 MR |
3597 | w->new_total for window W and recursively all child windows of W. |
3598 | Also calculate and assign the new vertical (horizontal) start | |
3599 | positions of each of these windows. | |
1a13852e MR |
3600 | |
3601 | This function does not perform any error checks. Make sure you have | |
d615d6d2 | 3602 | run window_resize_check on W before applying this function. */ |
440a42e3 | 3603 | static void |
748fa866 | 3604 | window_resize_apply (struct window *w, bool horflag) |
1a13852e | 3605 | { |
46a4ce9e | 3606 | struct window *c; |
1a13852e MR |
3607 | int pos; |
3608 | ||
3609 | /* Note: Assigning new_normal requires that the new total size of the | |
3610 | parent window has been set *before*. */ | |
3611 | if (horflag) | |
3612 | { | |
e8c17b81 | 3613 | wset_total_cols (w, w->new_total); |
d3d50620 | 3614 | if (NUMBERP (w->new_normal)) |
e8c17b81 | 3615 | wset_normal_cols (w, w->new_normal); |
1a13852e | 3616 | |
d3d50620 | 3617 | pos = XINT (w->left_col); |
1a13852e MR |
3618 | } |
3619 | else | |
3620 | { | |
e8c17b81 | 3621 | wset_total_lines (w, w->new_total); |
d3d50620 | 3622 | if (NUMBERP (w->new_normal)) |
e8c17b81 | 3623 | wset_normal_lines (w, w->new_normal); |
1a13852e | 3624 | |
d3d50620 | 3625 | pos = XINT (w->top_line); |
1a13852e MR |
3626 | } |
3627 | ||
d3d50620 | 3628 | if (!NILP (w->vchild)) |
1a13852e MR |
3629 | /* W is a vertical combination. */ |
3630 | { | |
d3d50620 | 3631 | c = XWINDOW (w->vchild); |
1a13852e MR |
3632 | while (c) |
3633 | { | |
3634 | if (horflag) | |
e8c17b81 | 3635 | wset_left_col (c, make_number (pos)); |
1a13852e | 3636 | else |
e8c17b81 | 3637 | wset_top_line (c, make_number (pos)); |
d615d6d2 | 3638 | window_resize_apply (c, horflag); |
1a13852e | 3639 | if (!horflag) |
d3d50620 DA |
3640 | pos = pos + XINT (c->total_lines); |
3641 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e MR |
3642 | } |
3643 | } | |
d3d50620 | 3644 | else if (!NILP (w->hchild)) |
1a13852e MR |
3645 | /* W is a horizontal combination. */ |
3646 | { | |
d3d50620 | 3647 | c = XWINDOW (w->hchild); |
1a13852e MR |
3648 | while (c) |
3649 | { | |
3650 | if (horflag) | |
e8c17b81 | 3651 | wset_left_col (c, make_number (pos)); |
1a13852e | 3652 | else |
e8c17b81 | 3653 | wset_top_line (c, make_number (pos)); |
d615d6d2 | 3654 | window_resize_apply (c, horflag); |
1a13852e | 3655 | if (horflag) |
d3d50620 DA |
3656 | pos = pos + XINT (c->total_cols); |
3657 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e MR |
3658 | } |
3659 | } | |
3660 | ||
3661 | /* Clear out some redisplay caches. */ | |
80b00b08 DA |
3662 | w->last_modified = 0; |
3663 | w->last_overlay_modified = 0; | |
1a13852e MR |
3664 | } |
3665 | ||
3666 | ||
d9f07150 | 3667 | DEFUN ("window-resize-apply", Fwindow_resize_apply, Swindow_resize_apply, 0, 2, 0, |
1a13852e | 3668 | doc: /* Apply requested size values for window-tree of FRAME. |
d9f07150 DA |
3669 | If FRAME is omitted or nil, it defaults to the selected frame. |
3670 | ||
3671 | Optional argument HORIZONTAL omitted or nil means apply requested | |
3672 | height values. HORIZONTAL non-nil means apply requested width values. | |
1a13852e MR |
3673 | |
3674 | This function checks whether the requested values sum up to a valid | |
be7f5545 MR |
3675 | window layout, recursively assigns the new sizes of all child windows |
3676 | and calculates and assigns the new start positions of these windows. | |
1a13852e MR |
3677 | |
3678 | Note: This function does not check any of `window-fixed-size-p', | |
3679 | `window-min-height' or `window-min-width'. All these checks have to | |
3680 | be applied on the Elisp level. */) | |
3681 | (Lisp_Object frame, Lisp_Object horizontal) | |
3682 | { | |
d9f07150 DA |
3683 | struct frame *f = decode_live_frame (frame); |
3684 | struct window *r = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
748fa866 | 3685 | bool horflag = !NILP (horizontal); |
1a13852e | 3686 | |
d615d6d2 | 3687 | if (!window_resize_check (r, horflag) |
d3d50620 DA |
3688 | || ! EQ (r->new_total, |
3689 | (horflag ? r->total_cols : r->total_lines))) | |
1a13852e MR |
3690 | return Qnil; |
3691 | ||
4d7e6e51 | 3692 | block_input (); |
d615d6d2 | 3693 | window_resize_apply (r, horflag); |
1a13852e MR |
3694 | |
3695 | windows_or_buffers_changed++; | |
3696 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3697 | ||
3698 | adjust_glyphs (f); | |
4d7e6e51 | 3699 | unblock_input (); |
1a13852e MR |
3700 | |
3701 | run_window_configuration_change_hook (f); | |
3702 | ||
3703 | return Qt; | |
3704 | } | |
3705 | ||
3706 | ||
3707 | /* Resize frame F's windows when number of lines of F is set to SIZE. | |
3708 | HORFLAG 1 means resize windows when number of columns of F is set to | |
3709 | SIZE. | |
3710 | ||
3711 | This function can delete all windows but the selected one in order to | |
3712 | satisfy the request. The result will be meaningful if and only if | |
3713 | F's windows have meaningful sizes when you call this. */ | |
3714 | void | |
748fa866 | 3715 | resize_frame_windows (struct frame *f, int size, bool horflag) |
1a13852e | 3716 | { |
e69b0960 | 3717 | Lisp_Object root = f->root_window; |
1a13852e | 3718 | struct window *r = XWINDOW (root); |
e69b0960 | 3719 | Lisp_Object mini = f->minibuffer_window; |
1a13852e MR |
3720 | struct window *m; |
3721 | /* new_size is the new size of the frame's root window. */ | |
3722 | int new_size = (horflag | |
3723 | ? size | |
3724 | : (size | |
3725 | - FRAME_TOP_MARGIN (f) | |
3726 | - ((FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3727 | ? 1 : 0))); | |
3728 | ||
e8c17b81 | 3729 | wset_top_line (r, make_number (FRAME_TOP_MARGIN (f))); |
d3d50620 | 3730 | if (NILP (r->vchild) && NILP (r->hchild)) |
1a13852e MR |
3731 | /* For a leaf root window just set the size. */ |
3732 | if (horflag) | |
e8c17b81 | 3733 | wset_total_cols (r, make_number (new_size)); |
1a13852e | 3734 | else |
e8c17b81 | 3735 | wset_total_lines (r, make_number (new_size)); |
1a13852e MR |
3736 | else |
3737 | { | |
3738 | /* old_size is the old size of the frame's root window. */ | |
f00af5b1 | 3739 | int old_size = XFASTINT (horflag ? r->total_cols |
d3d50620 | 3740 | : r->total_lines); |
1a13852e MR |
3741 | Lisp_Object delta; |
3742 | ||
3743 | XSETINT (delta, new_size - old_size); | |
3744 | /* Try a "normal" resize first. */ | |
3745 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qnil); | |
3a45383a | 3746 | if (window_resize_check (r, horflag) |
d3d50620 | 3747 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3748 | window_resize_apply (r, horflag); |
1a13852e MR |
3749 | else |
3750 | { | |
3751 | /* Try with "reasonable" minimum sizes next. */ | |
3752 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qt); | |
d615d6d2 | 3753 | if (window_resize_check (r, horflag) |
d3d50620 | 3754 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3755 | window_resize_apply (r, horflag); |
1a13852e MR |
3756 | else |
3757 | { | |
3758 | /* Finally, try with "safe" minimum sizes. */ | |
3759 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qsafe); | |
d615d6d2 | 3760 | if (window_resize_check (r, horflag) |
d3d50620 | 3761 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3762 | window_resize_apply (r, horflag); |
1a13852e MR |
3763 | else |
3764 | { | |
3765 | /* We lost. Delete all windows but the frame's | |
3766 | selected one. */ | |
e69b0960 | 3767 | root = f->selected_window; |
1a13852e MR |
3768 | Fdelete_other_windows_internal (root, Qnil); |
3769 | if (horflag) | |
e8c17b81 | 3770 | wset_total_cols (XWINDOW (root), make_number (new_size)); |
1a13852e | 3771 | else |
e8c17b81 | 3772 | wset_total_lines (XWINDOW (root), make_number (new_size)); |
1a13852e MR |
3773 | } |
3774 | } | |
3775 | } | |
3776 | } | |
3777 | ||
3778 | if (FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3779 | { | |
3780 | m = XWINDOW (mini); | |
3781 | if (horflag) | |
e8c17b81 | 3782 | wset_total_cols (m, make_number (size)); |
1a13852e MR |
3783 | else |
3784 | { | |
3785 | /* Are we sure we always want 1 line here? */ | |
e8c17b81 PE |
3786 | wset_total_lines (m, make_number (1)); |
3787 | wset_top_line | |
3788 | (m, make_number (XINT (r->top_line) + XINT (r->total_lines))); | |
1a13852e MR |
3789 | } |
3790 | } | |
dca778d5 MR |
3791 | |
3792 | windows_or_buffers_changed++; | |
1a13852e MR |
3793 | } |
3794 | ||
3795 | ||
3796 | DEFUN ("split-window-internal", Fsplit_window_internal, Ssplit_window_internal, 4, 4, 0, | |
3797 | doc: /* Split window OLD. | |
3798 | Second argument TOTAL-SIZE specifies the number of lines or columns of the | |
9397e56f | 3799 | new window. In any case TOTAL-SIZE must be a positive integer. |
1a13852e MR |
3800 | |
3801 | Third argument SIDE nil (or `below') specifies that the new window shall | |
3802 | be located below WINDOW. SIDE `above' means the new window shall be | |
3803 | located above WINDOW. In both cases TOTAL-SIZE specifies the number of | |
3804 | lines of the new window including space reserved for the mode and/or | |
3805 | header line. | |
3806 | ||
3807 | SIDE t (or `right') specifies that the new window shall be located on | |
3808 | the right side of WINDOW. SIDE `left' means the new window shall be | |
3809 | located on the left of WINDOW. In both cases TOTAL-SIZE specifies the | |
3810 | number of columns of the new window including space reserved for fringes | |
3811 | and the scrollbar or a divider column. | |
3812 | ||
3813 | Fourth argument NORMAL-SIZE specifies the normal size of the new window | |
3814 | according to the SIDE argument. | |
3815 | ||
3816 | The new total and normal sizes of all involved windows must have been | |
3817 | set correctly. See the code of `split-window' for how this is done. */) | |
3818 | (Lisp_Object old, Lisp_Object total_size, Lisp_Object side, Lisp_Object normal_size) | |
3819 | { | |
3820 | /* OLD (*o) is the window we have to split. (*p) is either OLD's | |
3821 | parent window or an internal window we have to install as OLD's new | |
3822 | parent. REFERENCE (*r) must denote a live window, or is set to OLD | |
3823 | provided OLD is a leaf window, or to the frame's selected window. | |
3824 | NEW (*n) is the new window created with some parameters taken from | |
3825 | REFERENCE (*r). */ | |
3826 | register Lisp_Object new, frame, reference; | |
3827 | register struct window *o, *p, *n, *r; | |
3828 | struct frame *f; | |
748fa866 | 3829 | bool horflag |
1a13852e MR |
3830 | /* HORFLAG is 1 when we split side-by-side, 0 otherwise. */ |
3831 | = EQ (side, Qt) || EQ (side, Qleft) || EQ (side, Qright); | |
b6f67890 | 3832 | int combination_limit = 0; |
1a13852e MR |
3833 | |
3834 | CHECK_WINDOW (old); | |
3835 | o = XWINDOW (old); | |
3836 | frame = WINDOW_FRAME (o); | |
3837 | f = XFRAME (frame); | |
3838 | ||
3839 | CHECK_NUMBER (total_size); | |
3840 | ||
b6f67890 MR |
3841 | /* Set combination_limit to 1 if we have to make a new parent window. |
3842 | We do that if either `window-combination-limit' is t, or OLD has no | |
3843 | parent, or OLD is ortho-combined. */ | |
3844 | combination_limit = | |
8e17c9ba | 3845 | EQ (Vwindow_combination_limit, Qt) |
d3d50620 | 3846 | || NILP (o->parent) |
1a13852e | 3847 | || NILP (horflag |
d3d50620 DA |
3848 | ? (XWINDOW (o->parent)->hchild) |
3849 | : (XWINDOW (o->parent)->vchild)); | |
1a13852e MR |
3850 | |
3851 | /* We need a live reference window to initialize some parameters. */ | |
3852 | if (WINDOW_LIVE_P (old)) | |
3853 | /* OLD is live, use it as reference window. */ | |
3854 | reference = old; | |
3855 | else | |
3856 | /* Use the frame's selected window as reference window. */ | |
3857 | reference = FRAME_SELECTED_WINDOW (f); | |
3858 | r = XWINDOW (reference); | |
3859 | ||
3860 | /* The following bugs are caught by `split-window'. */ | |
3861 | if (MINI_WINDOW_P (o)) | |
3862 | error ("Attempt to split minibuffer window"); | |
3863 | else if (XINT (total_size) < (horflag ? 2 : 1)) | |
3864 | error ("Size of new window too small (after split)"); | |
a0c2d0ae MR |
3865 | else if (!combination_limit && !NILP (Vwindow_combination_resize)) |
3866 | /* `window-combination-resize' non-nil means try to resize OLD's siblings | |
1a13852e MR |
3867 | proportionally. */ |
3868 | { | |
d3d50620 | 3869 | p = XWINDOW (o->parent); |
1a13852e | 3870 | /* Temporarily pretend we split the parent window. */ |
e8c17b81 PE |
3871 | wset_new_total |
3872 | (p, make_number (XINT (horflag ? p->total_cols : p->total_lines) | |
077288cf | 3873 | - XINT (total_size))); |
d615d6d2 | 3874 | if (!window_resize_check (p, horflag)) |
1a13852e MR |
3875 | error ("Window sizes don't fit"); |
3876 | else | |
3877 | /* Undo the temporary pretension. */ | |
e8c17b81 | 3878 | wset_new_total (p, horflag ? p->total_cols : p->total_lines); |
1a13852e MR |
3879 | } |
3880 | else | |
3881 | { | |
d615d6d2 | 3882 | if (!window_resize_check (o, horflag)) |
1a13852e | 3883 | error ("Resizing old window failed"); |
d3d50620 DA |
3884 | else if (XINT (total_size) + XINT (o->new_total) |
3885 | != XINT (horflag ? o->total_cols : o->total_lines)) | |
1a13852e MR |
3886 | error ("Sum of sizes of old and new window don't fit"); |
3887 | } | |
3888 | ||
3889 | /* This is our point of no return. */ | |
b6f67890 | 3890 | if (combination_limit) |
1a13852e MR |
3891 | { |
3892 | /* Save the old value of o->normal_cols/lines. It gets corrupted | |
3893 | by make_parent_window and we need it below for assigning it to | |
3894 | p->new_normal. */ | |
3a45383a | 3895 | Lisp_Object new_normal |
d3d50620 | 3896 | = horflag ? o->normal_cols : o->normal_lines; |
1a13852e MR |
3897 | |
3898 | make_parent_window (old, horflag); | |
d3d50620 | 3899 | p = XWINDOW (o->parent); |
fdaf534a MR |
3900 | if (EQ (Vwindow_combination_limit, Qt)) |
3901 | /* Store t in the new parent's combination_limit slot to avoid | |
3902 | that its children get merged into another window. */ | |
3903 | wset_combination_limit (p, Qt); | |
1a13852e | 3904 | /* These get applied below. */ |
e8c17b81 PE |
3905 | wset_new_total (p, horflag ? o->total_cols : o->total_lines); |
3906 | wset_new_normal (p, new_normal); | |
1a13852e MR |
3907 | } |
3908 | else | |
d3d50620 | 3909 | p = XWINDOW (o->parent); |
1a13852e MR |
3910 | |
3911 | windows_or_buffers_changed++; | |
3912 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3913 | new = make_window (); | |
3914 | n = XWINDOW (new); | |
e8c17b81 PE |
3915 | wset_frame (n, frame); |
3916 | wset_parent (n, o->parent); | |
3917 | wset_vchild (n, Qnil); | |
3918 | wset_hchild (n, Qnil); | |
1a13852e MR |
3919 | |
3920 | if (EQ (side, Qabove) || EQ (side, Qleft)) | |
3921 | { | |
e8c17b81 | 3922 | wset_prev (n, o->prev); |
d3d50620 | 3923 | if (NILP (n->prev)) |
1a13852e | 3924 | if (horflag) |
e8c17b81 | 3925 | wset_hchild (p, new); |
1a13852e | 3926 | else |
e8c17b81 | 3927 | wset_vchild (p, new); |
1a13852e | 3928 | else |
e8c17b81 PE |
3929 | wset_next (XWINDOW (n->prev), new); |
3930 | wset_next (n, old); | |
3931 | wset_prev (o, new); | |
1a13852e MR |
3932 | } |
3933 | else | |
3934 | { | |
e8c17b81 | 3935 | wset_next (n, o->next); |
d3d50620 | 3936 | if (!NILP (n->next)) |
e8c17b81 PE |
3937 | wset_prev (XWINDOW (n->next), new); |
3938 | wset_prev (n, old); | |
3939 | wset_next (o, new); | |
1a13852e MR |
3940 | } |
3941 | ||
9d93ce29 | 3942 | n->window_end_valid = 0; |
1a13852e MR |
3943 | memset (&n->last_cursor, 0, sizeof n->last_cursor); |
3944 | ||
3945 | /* Get special geometry settings from reference window. */ | |
e8c17b81 PE |
3946 | wset_left_margin_cols (n, r->left_margin_cols); |
3947 | wset_right_margin_cols (n, r->right_margin_cols); | |
3948 | wset_left_fringe_width (n, r->left_fringe_width); | |
3949 | wset_right_fringe_width (n, r->right_fringe_width); | |
1a13852e | 3950 | n->fringes_outside_margins = r->fringes_outside_margins; |
e8c17b81 PE |
3951 | wset_scroll_bar_width (n, r->scroll_bar_width); |
3952 | wset_vertical_scroll_bar_type (n, r->vertical_scroll_bar_type); | |
1a13852e | 3953 | |
1a13852e MR |
3954 | /* Directly assign orthogonal coordinates and sizes. */ |
3955 | if (horflag) | |
3956 | { | |
e8c17b81 PE |
3957 | wset_top_line (n, o->top_line); |
3958 | wset_total_lines (n, o->total_lines); | |
1a13852e MR |
3959 | } |
3960 | else | |
3961 | { | |
e8c17b81 PE |
3962 | wset_left_col (n, o->left_col); |
3963 | wset_total_cols (n, o->total_cols); | |
1a13852e MR |
3964 | } |
3965 | ||
d615d6d2 | 3966 | /* Iso-coordinates and sizes are assigned by window_resize_apply, |
1a13852e | 3967 | get them ready here. */ |
e8c17b81 PE |
3968 | wset_new_total (n, total_size); |
3969 | wset_new_normal (n, normal_size); | |
1a13852e | 3970 | |
4d7e6e51 | 3971 | block_input (); |
d615d6d2 | 3972 | window_resize_apply (p, horflag); |
1a13852e MR |
3973 | adjust_glyphs (f); |
3974 | /* Set buffer of NEW to buffer of reference window. Don't run | |
3975 | any hooks. */ | |
d3d50620 | 3976 | set_window_buffer (new, r->buffer, 0, 1); |
4d7e6e51 | 3977 | unblock_input (); |
1a13852e MR |
3978 | |
3979 | /* Maybe we should run the scroll functions in Elisp (which already | |
3980 | runs the configuration change hook). */ | |
3981 | if (! NILP (Vwindow_scroll_functions)) | |
3982 | run_hook_with_args_2 (Qwindow_scroll_functions, new, | |
d3d50620 | 3983 | Fmarker_position (n->start)); |
1a13852e MR |
3984 | /* Return NEW. */ |
3985 | return new; | |
3986 | } | |
3987 | ||
3988 | ||
3989 | DEFUN ("delete-window-internal", Fdelete_window_internal, Sdelete_window_internal, 1, 1, 0, | |
3990 | doc: /* Remove WINDOW from its frame. | |
87e68db4 JB |
3991 | WINDOW defaults to the selected window. Return nil. |
3992 | Signal an error when WINDOW is the only window on its frame. */) | |
1a13852e MR |
3993 | (register Lisp_Object window) |
3994 | { | |
3995 | register Lisp_Object parent, sibling, frame, root; | |
3996 | struct window *w, *p, *s, *r; | |
3997 | struct frame *f; | |
748fa866 | 3998 | bool horflag; |
1a13852e MR |
3999 | int before_sibling = 0; |
4000 | ||
4001 | w = decode_any_window (window); | |
4002 | XSETWINDOW (window, w); | |
d3d50620 DA |
4003 | if (NILP (w->buffer) |
4004 | && NILP (w->hchild) && NILP (w->vchild)) | |
1a13852e MR |
4005 | /* It's a no-op to delete an already deleted window. */ |
4006 | return Qnil; | |
4007 | ||
d3d50620 | 4008 | parent = w->parent; |
1a13852e MR |
4009 | if (NILP (parent)) |
4010 | /* Never delete a minibuffer or frame root window. */ | |
4011 | error ("Attempt to delete minibuffer or sole ordinary window"); | |
d3d50620 | 4012 | else if (NILP (w->prev) && NILP (w->next)) |
1a13852e MR |
4013 | /* Rather bow out here, this case should be handled on the Elisp |
4014 | level. */ | |
4015 | error ("Attempt to delete sole window of parent"); | |
4016 | ||
4017 | p = XWINDOW (parent); | |
d3d50620 | 4018 | horflag = NILP (p->vchild); |
1a13852e MR |
4019 | |
4020 | frame = WINDOW_FRAME (w); | |
4021 | f = XFRAME (frame); | |
4022 | ||
4023 | root = FRAME_ROOT_WINDOW (f); | |
4024 | r = XWINDOW (root); | |
4025 | ||
4026 | /* Unlink WINDOW from window tree. */ | |
d3d50620 | 4027 | if (NILP (w->prev)) |
1a13852e MR |
4028 | /* Get SIBLING below (on the right of) WINDOW. */ |
4029 | { | |
4030 | /* before_sibling 1 means WINDOW is the first child of its | |
4031 | parent and thus before the sibling. */ | |
4032 | before_sibling = 1; | |
d3d50620 | 4033 | sibling = w->next; |
1a13852e | 4034 | s = XWINDOW (sibling); |
e8c17b81 | 4035 | wset_prev (s, Qnil); |
1a13852e | 4036 | if (horflag) |
e8c17b81 | 4037 | wset_hchild (p, sibling); |
1a13852e | 4038 | else |
e8c17b81 | 4039 | wset_vchild (p, sibling); |
1a13852e MR |
4040 | } |
4041 | else | |
4042 | /* Get SIBLING above (on the left of) WINDOW. */ | |
4043 | { | |
d3d50620 | 4044 | sibling = w->prev; |
1a13852e | 4045 | s = XWINDOW (sibling); |
e8c17b81 | 4046 | wset_next (s, w->next); |
d3d50620 | 4047 | if (!NILP (s->next)) |
e8c17b81 | 4048 | wset_prev (XWINDOW (s->next), sibling); |
7ab12479 JB |
4049 | } |
4050 | ||
d615d6d2 | 4051 | if (window_resize_check (r, horflag) |
d3d50620 DA |
4052 | && EQ (r->new_total, |
4053 | (horflag ? r->total_cols : r->total_lines))) | |
562dd5e9 MR |
4054 | /* We can delete WINDOW now. */ |
4055 | { | |
95986d52 | 4056 | |
562dd5e9 | 4057 | /* Block input. */ |
4d7e6e51 | 4058 | block_input (); |
d615d6d2 | 4059 | window_resize_apply (p, horflag); |
0d384044 | 4060 | |
95986d52 CY |
4061 | /* If this window is referred to by the dpyinfo's mouse |
4062 | highlight, invalidate that slot to be safe (Bug#9904). */ | |
4c5501e9 EZ |
4063 | if (!FRAME_INITIAL_P (f)) |
4064 | { | |
4065 | Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f); | |
4066 | ||
4067 | if (EQ (hlinfo->mouse_face_window, window)) | |
4068 | hlinfo->mouse_face_window = Qnil; | |
4069 | } | |
95986d52 | 4070 | |
562dd5e9 MR |
4071 | windows_or_buffers_changed++; |
4072 | Vwindow_list = Qnil; | |
4073 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
0d384044 | 4074 | |
e8c17b81 | 4075 | wset_next (w, Qnil); /* Don't delete w->next too. */ |
562dd5e9 | 4076 | free_window_matrices (w); |
bd99e242 | 4077 | |
d3d50620 | 4078 | if (!NILP (w->vchild)) |
0d384044 | 4079 | { |
d3d50620 | 4080 | delete_all_child_windows (w->vchild); |
e8c17b81 | 4081 | wset_vchild (w, Qnil); |
0d384044 | 4082 | } |
d3d50620 | 4083 | else if (!NILP (w->hchild)) |
bd99e242 | 4084 | { |
d3d50620 | 4085 | delete_all_child_windows (w->hchild); |
e8c17b81 | 4086 | wset_hchild (w, Qnil); |
bd99e242 | 4087 | } |
d3d50620 | 4088 | else if (!NILP (w->buffer)) |
bd99e242 | 4089 | { |
562dd5e9 | 4090 | unshow_buffer (w); |
d3d50620 DA |
4091 | unchain_marker (XMARKER (w->pointm)); |
4092 | unchain_marker (XMARKER (w->start)); | |
e8c17b81 | 4093 | wset_buffer (w, Qnil); |
bd99e242 RS |
4094 | } |
4095 | ||
d3d50620 | 4096 | if (NILP (s->prev) && NILP (s->next)) |
562dd5e9 MR |
4097 | /* A matrjoshka where SIBLING has become the only child of |
4098 | PARENT. */ | |
c32de52a | 4099 | { |
562dd5e9 MR |
4100 | /* Put SIBLING into PARENT's place. */ |
4101 | replace_window (parent, sibling, 0); | |
4102 | /* Have SIBLING inherit the following three slot values from | |
b6f67890 | 4103 | PARENT (the combination_limit slot is not inherited). */ |
e8c17b81 PE |
4104 | wset_normal_cols (s, p->normal_cols); |
4105 | wset_normal_lines (s, p->normal_lines); | |
562dd5e9 | 4106 | /* Mark PARENT as deleted. */ |
e8c17b81 PE |
4107 | wset_vchild (p, Qnil); |
4108 | wset_hchild (p, Qnil); | |
562dd5e9 MR |
4109 | /* Try to merge SIBLING into its new parent. */ |
4110 | recombine_windows (sibling); | |
c32de52a RS |
4111 | } |
4112 | ||
562dd5e9 MR |
4113 | adjust_glyphs (f); |
4114 | ||
4115 | if (!WINDOW_LIVE_P (FRAME_SELECTED_WINDOW (f))) | |
4116 | /* We deleted the frame's selected window. */ | |
0d384044 | 4117 | { |
562dd5e9 MR |
4118 | /* Use the frame's first window as fallback ... */ |
4119 | Lisp_Object new_selected_window = Fframe_first_window (frame); | |
4120 | /* ... but preferably use its most recently used window. */ | |
4121 | Lisp_Object mru_window; | |
0d384044 | 4122 | |
562dd5e9 MR |
4123 | /* `get-mru-window' might fail for some reason so play it safe |
4124 | - promote the first window _without recording it_ first. */ | |
4125 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
4126 | Fselect_window (new_selected_window, Qt); | |
4127 | else | |
f00af5b1 | 4128 | fset_selected_window (f, new_selected_window); |
0d384044 | 4129 | |
4d7e6e51 | 4130 | unblock_input (); |
0d384044 | 4131 | |
562dd5e9 MR |
4132 | /* Now look whether `get-mru-window' gets us something. */ |
4133 | mru_window = call1 (Qget_mru_window, frame); | |
4134 | if (WINDOW_LIVE_P (mru_window) | |
d3d50620 | 4135 | && EQ (XWINDOW (mru_window)->frame, frame)) |
562dd5e9 | 4136 | new_selected_window = mru_window; |
bd99e242 | 4137 | |
562dd5e9 MR |
4138 | /* If all ended up well, we now promote the mru window. */ |
4139 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
4140 | Fselect_window (new_selected_window, Qnil); | |
4141 | else | |
f00af5b1 | 4142 | fset_selected_window (f, new_selected_window); |
0d384044 RS |
4143 | } |
4144 | else | |
4d7e6e51 | 4145 | unblock_input (); |
0d384044 | 4146 | |
562dd5e9 MR |
4147 | /* Must be run by the caller: |
4148 | run_window_configuration_change_hook (f); */ | |
0d384044 | 4149 | } |
562dd5e9 MR |
4150 | else |
4151 | /* We failed: Relink WINDOW into window tree. */ | |
0d384044 | 4152 | { |
562dd5e9 MR |
4153 | if (before_sibling) |
4154 | { | |
e8c17b81 | 4155 | wset_prev (s, window); |
562dd5e9 | 4156 | if (horflag) |
e8c17b81 | 4157 | wset_hchild (p, window); |
562dd5e9 | 4158 | else |
e8c17b81 | 4159 | wset_vchild (p, window); |
562dd5e9 MR |
4160 | } |
4161 | else | |
4162 | { | |
e8c17b81 | 4163 | wset_next (s, window); |
d3d50620 | 4164 | if (!NILP (w->next)) |
e8c17b81 | 4165 | wset_prev (XWINDOW (w->next), window); |
562dd5e9 MR |
4166 | } |
4167 | error ("Deletion failed"); | |
0d384044 RS |
4168 | } |
4169 | ||
0d384044 RS |
4170 | return Qnil; |
4171 | } | |
f984d4fc GM |
4172 | \f |
4173 | /*********************************************************************** | |
4174 | Resizing Mini-Windows | |
4175 | ***********************************************************************/ | |
4176 | ||
562dd5e9 MR |
4177 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we |
4178 | can. */ | |
4179 | void | |
4180 | grow_mini_window (struct window *w, int delta) | |
f984d4fc | 4181 | { |
d3d50620 | 4182 | struct frame *f = XFRAME (w->frame); |
562dd5e9 MR |
4183 | struct window *r; |
4184 | Lisp_Object root, value; | |
f984d4fc | 4185 | |
a54e2c05 DA |
4186 | eassert (MINI_WINDOW_P (w)); |
4187 | eassert (delta >= 0); | |
f984d4fc | 4188 | |
562dd5e9 MR |
4189 | root = FRAME_ROOT_WINDOW (f); |
4190 | r = XWINDOW (root); | |
5386012d MR |
4191 | value = call2 (Qwindow_resize_root_window_vertically, |
4192 | root, make_number (- delta)); | |
d615d6d2 | 4193 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4194 | { |
4d7e6e51 | 4195 | block_input (); |
d615d6d2 | 4196 | window_resize_apply (r, 0); |
f984d4fc | 4197 | |
562dd5e9 | 4198 | /* Grow the mini-window. */ |
e8c17b81 PE |
4199 | wset_top_line |
4200 | (w, make_number (XFASTINT (r->top_line) + XFASTINT (r->total_lines))); | |
4201 | wset_total_lines | |
4202 | (w, make_number (XFASTINT (w->total_lines) - XINT (value))); | |
80b00b08 DA |
4203 | w->last_modified = 0; |
4204 | w->last_overlay_modified = 0; | |
f984d4fc | 4205 | |
dca778d5 | 4206 | windows_or_buffers_changed++; |
562dd5e9 | 4207 | adjust_glyphs (f); |
4d7e6e51 | 4208 | unblock_input (); |
f984d4fc GM |
4209 | } |
4210 | } | |
4211 | ||
4212 | ||
562dd5e9 MR |
4213 | /* Shrink mini-window W. */ |
4214 | void | |
4215 | shrink_mini_window (struct window *w) | |
f984d4fc | 4216 | { |
d3d50620 | 4217 | struct frame *f = XFRAME (w->frame); |
562dd5e9 MR |
4218 | struct window *r; |
4219 | Lisp_Object root, value; | |
4220 | EMACS_INT size; | |
43b4a21f | 4221 | |
a54e2c05 | 4222 | eassert (MINI_WINDOW_P (w)); |
177c0ea7 | 4223 | |
d3d50620 | 4224 | size = XINT (w->total_lines); |
562dd5e9 MR |
4225 | if (size > 1) |
4226 | { | |
4227 | root = FRAME_ROOT_WINDOW (f); | |
4228 | r = XWINDOW (root); | |
5386012d | 4229 | value = call2 (Qwindow_resize_root_window_vertically, |
562dd5e9 | 4230 | root, make_number (size - 1)); |
d615d6d2 | 4231 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4232 | { |
4d7e6e51 | 4233 | block_input (); |
d615d6d2 | 4234 | window_resize_apply (r, 0); |
43b4a21f | 4235 | |
562dd5e9 | 4236 | /* Shrink the mini-window. */ |
e8c17b81 PE |
4237 | wset_top_line (w, make_number (XFASTINT (r->top_line) |
4238 | + XFASTINT (r->total_lines))); | |
4239 | wset_total_lines (w, make_number (1)); | |
43b4a21f | 4240 | |
80b00b08 DA |
4241 | w->last_modified = 0; |
4242 | w->last_overlay_modified = 0; | |
43b4a21f | 4243 | |
dca778d5 | 4244 | windows_or_buffers_changed++; |
562dd5e9 | 4245 | adjust_glyphs (f); |
4d7e6e51 | 4246 | unblock_input (); |
f984d4fc | 4247 | } |
562dd5e9 MR |
4248 | /* If the above failed for whatever strange reason we must make a |
4249 | one window frame here. The same routine will be needed when | |
4250 | shrinking the frame (and probably when making the initial | |
4251 | *scratch* window). For the moment leave things as they are. */ | |
f984d4fc GM |
4252 | } |
4253 | } | |
4254 | ||
562dd5e9 MR |
4255 | DEFUN ("resize-mini-window-internal", Fresize_mini_window_internal, Sresize_mini_window_internal, 1, 1, 0, |
4256 | doc: /* Resize minibuffer window WINDOW. */) | |
4257 | (Lisp_Object window) | |
f984d4fc | 4258 | { |
562dd5e9 MR |
4259 | struct window *w = XWINDOW (window); |
4260 | struct window *r; | |
4261 | struct frame *f; | |
4262 | int height; | |
177c0ea7 | 4263 | |
562dd5e9 | 4264 | CHECK_WINDOW (window); |
d3d50620 | 4265 | f = XFRAME (w->frame); |
177c0ea7 | 4266 | |
d3d50620 | 4267 | if (!EQ (FRAME_MINIBUF_WINDOW (XFRAME (w->frame)), window)) |
562dd5e9 MR |
4268 | error ("Not a valid minibuffer window"); |
4269 | else if (FRAME_MINIBUF_ONLY_P (f)) | |
4270 | error ("Cannot resize a minibuffer-only frame"); | |
177c0ea7 | 4271 | |
562dd5e9 | 4272 | r = XWINDOW (FRAME_ROOT_WINDOW (f)); |
d3d50620 | 4273 | height = XINT (r->total_lines) + XINT (w->total_lines); |
d615d6d2 | 4274 | if (window_resize_check (r, 0) |
d3d50620 DA |
4275 | && XINT (w->new_total) > 0 |
4276 | && height == XINT (r->new_total) + XINT (w->new_total)) | |
f984d4fc | 4277 | { |
4d7e6e51 | 4278 | block_input (); |
d615d6d2 | 4279 | window_resize_apply (r, 0); |
f984d4fc | 4280 | |
e8c17b81 PE |
4281 | wset_total_lines (w, w->new_total); |
4282 | wset_top_line (w, make_number (XINT (r->top_line) | |
4283 | + XINT (r->total_lines))); | |
177c0ea7 | 4284 | |
562dd5e9 MR |
4285 | windows_or_buffers_changed++; |
4286 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
f984d4fc | 4287 | adjust_glyphs (f); |
4d7e6e51 | 4288 | unblock_input (); |
f984d4fc | 4289 | |
562dd5e9 MR |
4290 | run_window_configuration_change_hook (f); |
4291 | return Qt; | |
86c8e823 | 4292 | } |
562dd5e9 | 4293 | else error ("Failed to resize minibuffer window"); |
f984d4fc | 4294 | } |
562dd5e9 | 4295 | \f |
5500c422 GM |
4296 | /* Mark window cursors off for all windows in the window tree rooted |
4297 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4298 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4299 | the frame are cleared. */ | |
4300 | ||
4301 | void | |
971de7fb | 4302 | mark_window_cursors_off (struct window *w) |
5500c422 GM |
4303 | { |
4304 | while (w) | |
4305 | { | |
d3d50620 DA |
4306 | if (!NILP (w->hchild)) |
4307 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4308 | else if (!NILP (w->vchild)) | |
4309 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
5500c422 GM |
4310 | else |
4311 | w->phys_cursor_on_p = 0; | |
4312 | ||
d3d50620 | 4313 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
5500c422 GM |
4314 | } |
4315 | } | |
4316 | ||
4317 | ||
e9c195b1 | 4318 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4319 | |
4320 | int | |
971de7fb | 4321 | window_internal_height (struct window *w) |
7ab12479 | 4322 | { |
d3d50620 | 4323 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4324 | |
e9c195b1 GM |
4325 | if (!MINI_WINDOW_P (w)) |
4326 | { | |
d3d50620 DA |
4327 | if (!NILP (w->parent) |
4328 | || !NILP (w->vchild) | |
4329 | || !NILP (w->hchild) | |
4330 | || !NILP (w->next) | |
4331 | || !NILP (w->prev) | |
e9c195b1 GM |
4332 | || WINDOW_WANTS_MODELINE_P (w)) |
4333 | --ht; | |
7ab12479 | 4334 | |
e9c195b1 GM |
4335 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4336 | --ht; | |
4337 | } | |
7ab12479 JB |
4338 | |
4339 | return ht; | |
4340 | } | |
5500c422 GM |
4341 | \f |
4342 | /************************************************************************ | |
4343 | Window Scrolling | |
4344 | ***********************************************************************/ | |
535e0b8e | 4345 | |
5500c422 | 4346 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4347 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4348 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4349 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4350 | means don't signal an error if we try to move over BEGV or ZV, | |
4351 | respectively. */ | |
7ab12479 | 4352 | |
101d1605 | 4353 | static void |
d311d28c | 4354 | window_scroll (Lisp_Object window, EMACS_INT n, int whole, int noerror) |
5500c422 | 4355 | { |
cba59f77 | 4356 | immediate_quit = 1; |
d311d28c | 4357 | n = clip_to_bounds (INT_MIN, n, INT_MAX); |
cba59f77 | 4358 | |
5500c422 GM |
4359 | /* If we must, use the pixel-based version which is much slower than |
4360 | the line-based one but can handle varying line heights. */ | |
d3d50620 | 4361 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) |
5500c422 GM |
4362 | window_scroll_pixel_based (window, n, whole, noerror); |
4363 | else | |
4364 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4365 | |
4366 | immediate_quit = 0; | |
5500c422 GM |
4367 | } |
4368 | ||
4369 | ||
4370 | /* Implementation of window_scroll that works based on pixel line | |
4371 | heights. See the comment of window_scroll for parameter | |
4372 | descriptions. */ | |
4373 | ||
4374 | static void | |
971de7fb | 4375 | window_scroll_pixel_based (Lisp_Object window, int n, int whole, int noerror) |
5500c422 GM |
4376 | { |
4377 | struct it it; | |
4378 | struct window *w = XWINDOW (window); | |
4379 | struct text_pos start; | |
5500c422 | 4380 | int this_scroll_margin; |
9d14503e | 4381 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5cdb3cf3 | 4382 | int vscrolled = 0; |
5a857365 | 4383 | int x, y, rtop, rbot, rowh, vpos; |
57b3e30b | 4384 | void *itdata = NULL; |
5500c422 | 4385 | |
d3d50620 | 4386 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
f0ee99a0 EZ |
4387 | /* Scrolling a minibuffer window via scroll bar when the echo area |
4388 | shows long text sometimes resets the minibuffer contents behind | |
4389 | our backs. */ | |
4390 | if (CHARPOS (start) > ZV) | |
4391 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
177c0ea7 | 4392 | |
5500c422 | 4393 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4394 | the screen. Allow PT to be partially visible, otherwise |
4395 | something like (scroll-down 1) with PT in the line before | |
4396 | the partially visible one would recenter. */ | |
5a857365 KS |
4397 | |
4398 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 | 4399 | { |
57b3e30b | 4400 | itdata = bidi_shelve_cache (); |
5500c422 GM |
4401 | /* Move backward half the height of the window. Performance note: |
4402 | vmotion used here is about 10% faster, but would give wrong | |
4403 | results for variable height lines. */ | |
4404 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4405 | it.current_y = it.last_visible_y; | |
f204989e | 4406 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4407 | |
5500c422 GM |
4408 | /* The function move_iterator_vertically may move over more than |
4409 | the specified y-distance. If it->w is small, e.g. a | |
4410 | mini-buffer window, we may end up in front of the window's | |
4411 | display area. This is the case when Start displaying at the | |
4412 | start of the line containing PT in this case. */ | |
4413 | if (it.current_y <= 0) | |
4414 | { | |
4415 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4416 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4417 | it.current_y = 0; |
4418 | } | |
4419 | ||
4420 | start = it.current.pos; | |
35928349 | 4421 | bidi_unshelve_cache (itdata, 0); |
5500c422 | 4422 | } |
e56263e5 KS |
4423 | else if (auto_window_vscroll_p) |
4424 | { | |
5a857365 | 4425 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
4426 | { |
4427 | int px; | |
4428 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4429 | if (whole) | |
e856c216 KS |
4430 | dy = max ((window_box_height (w) |
4431 | - next_screen_context_lines * dy), | |
4432 | dy); | |
e56263e5 KS |
4433 | dy *= n; |
4434 | ||
5a857365 | 4435 | if (n < 0) |
e56263e5 | 4436 | { |
5a857365 KS |
4437 | /* Only vscroll backwards if already vscrolled forwards. */ |
4438 | if (w->vscroll < 0 && rtop > 0) | |
4439 | { | |
4440 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
4441 | Fset_window_vscroll (window, make_number (px), Qt); | |
4442 | return; | |
4443 | } | |
e56263e5 | 4444 | } |
5a857365 | 4445 | if (n > 0) |
e56263e5 | 4446 | { |
5a857365 KS |
4447 | /* Do vscroll if already vscrolled or only display line. */ |
4448 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
4449 | { | |
4450 | px = max (0, -w->vscroll + min (rbot, dy)); | |
4451 | Fset_window_vscroll (window, make_number (px), Qt); | |
4452 | return; | |
4453 | } | |
4454 | ||
4455 | /* Maybe modify window start instead of scrolling. */ | |
4456 | if (rbot > 0 || w->vscroll < 0) | |
4457 | { | |
d311d28c | 4458 | ptrdiff_t spos; |
5a857365 KS |
4459 | |
4460 | Fset_window_vscroll (window, make_number (0), Qt); | |
4461 | /* If there are other text lines above the current row, | |
4462 | move window start to current row. Else to next row. */ | |
4463 | if (rbot > 0) | |
4464 | spos = XINT (Fline_beginning_position (Qnil)); | |
4465 | else | |
4466 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
d3d50620 DA |
4467 | set_marker_restricted (w->start, make_number (spos), |
4468 | w->buffer); | |
c98ff5dd DA |
4469 | w->start_at_line_beg = 1; |
4470 | w->update_mode_line = 1; | |
80b00b08 DA |
4471 | w->last_modified = 0; |
4472 | w->last_overlay_modified = 0; | |
5a857365 KS |
4473 | /* Set force_start so that redisplay_window will run the |
4474 | window-scroll-functions. */ | |
c98ff5dd | 4475 | w->force_start = 1; |
5a857365 KS |
4476 | return; |
4477 | } | |
e56263e5 KS |
4478 | } |
4479 | } | |
5a857365 | 4480 | /* Cancel previous vscroll. */ |
e56263e5 KS |
4481 | Fset_window_vscroll (window, make_number (0), Qt); |
4482 | } | |
5500c422 | 4483 | |
57b3e30b | 4484 | itdata = bidi_shelve_cache (); |
d0c38d63 | 4485 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
4486 | point in the same window line as it is now, so get that line. */ |
4487 | if (!NILP (Vscroll_preserve_screen_position)) | |
4488 | { | |
c525d842 | 4489 | /* We preserve the goal pixel coordinate across consecutive |
a4b000fb JL |
4490 | calls to scroll-up, scroll-down and other commands that |
4491 | have the `scroll-command' property. This avoids the | |
c525d842 CY |
4492 | possibility of point becoming "stuck" on a tall line when |
4493 | scrolling by one line. */ | |
66fe93d1 | 4494 | if (window_scroll_pixel_based_preserve_y < 0 |
1344aad4 TT |
4495 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4496 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c525d842 CY |
4497 | { |
4498 | start_display (&it, w, start); | |
4499 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 4500 | window_scroll_pixel_based_preserve_y = it.current_y; |
c876b227 | 4501 | window_scroll_pixel_based_preserve_x = it.current_x; |
c525d842 | 4502 | } |
5500c422 GM |
4503 | } |
4504 | else | |
c876b227 SM |
4505 | window_scroll_pixel_based_preserve_y |
4506 | = window_scroll_pixel_based_preserve_x = -1; | |
5500c422 GM |
4507 | |
4508 | /* Move iterator it from start the specified distance forward or | |
4509 | backward. The result is the new window start. */ | |
4510 | start_display (&it, w, start); | |
4511 | if (whole) | |
4512 | { | |
d311d28c | 4513 | ptrdiff_t start_pos = IT_CHARPOS (it); |
e856c216 KS |
4514 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); |
4515 | dy = max ((window_box_height (w) | |
4516 | - next_screen_context_lines * dy), | |
4517 | dy) * n; | |
d72340d4 GM |
4518 | |
4519 | /* Note that move_it_vertically always moves the iterator to the | |
4520 | start of a line. So, if the last line doesn't have a newline, | |
4521 | we would end up at the start of the line ending at ZV. */ | |
4522 | if (dy <= 0) | |
e856c216 KS |
4523 | { |
4524 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 4525 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
4526 | looking at an image that is taller that the window height. */ |
4527 | while (start_pos == IT_CHARPOS (it) | |
4528 | && start_pos > BEGV) | |
e4cc2dfc | 4529 | move_it_by_lines (&it, -1); |
e856c216 | 4530 | } |
d72340d4 | 4531 | else if (dy > 0) |
bed83ee4 | 4532 | { |
bed83ee4 KS |
4533 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
4534 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 4535 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
4536 | looking at an image that is taller that the window height. */ |
4537 | while (start_pos == IT_CHARPOS (it) | |
4538 | && start_pos < ZV) | |
e4cc2dfc | 4539 | move_it_by_lines (&it, 1); |
bed83ee4 | 4540 | } |
5500c422 GM |
4541 | } |
4542 | else | |
e4cc2dfc | 4543 | move_it_by_lines (&it, n); |
5500c422 | 4544 | |
96ae58c8 RS |
4545 | /* We failed if we find ZV is already on the screen (scrolling up, |
4546 | means there's nothing past the end), or if we can't start any | |
4547 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 4548 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 4549 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 4550 | { |
5cdb3cf3 MB |
4551 | if (IT_CHARPOS (it) == ZV) |
4552 | { | |
07ce8b53 RS |
4553 | if (it.current_y < it.last_visible_y |
4554 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 4555 | > it.last_visible_y)) |
a74eca50 GM |
4556 | { |
4557 | /* The last line was only partially visible, make it fully | |
4558 | visible. */ | |
4559 | w->vscroll = (it.last_visible_y | |
4560 | - it.current_y + it.max_ascent + it.max_descent); | |
4561 | adjust_glyphs (it.f); | |
4562 | } | |
5cdb3cf3 | 4563 | else |
57b3e30b | 4564 | { |
35928349 | 4565 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
4566 | if (noerror) |
4567 | return; | |
4568 | else if (n < 0) /* could happen with empty buffers */ | |
4569 | xsignal0 (Qbeginning_of_buffer); | |
4570 | else | |
4571 | xsignal0 (Qend_of_buffer); | |
4572 | } | |
5cdb3cf3 | 4573 | } |
5500c422 | 4574 | else |
5cdb3cf3 MB |
4575 | { |
4576 | if (w->vscroll != 0) | |
4577 | /* The first line was only partially visible, make it fully | |
4578 | visible. */ | |
4579 | w->vscroll = 0; | |
5cdb3cf3 | 4580 | else |
57b3e30b | 4581 | { |
35928349 | 4582 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
4583 | if (noerror) |
4584 | return; | |
4585 | else | |
4586 | xsignal0 (Qbeginning_of_buffer); | |
4587 | } | |
5cdb3cf3 MB |
4588 | } |
4589 | ||
4590 | /* If control gets here, then we vscrolled. */ | |
4591 | ||
d3d50620 | 4592 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
5cdb3cf3 MB |
4593 | |
4594 | /* Don't try to change the window start below. */ | |
4595 | vscrolled = 1; | |
5500c422 GM |
4596 | } |
4597 | ||
5cdb3cf3 MB |
4598 | if (! vscrolled) |
4599 | { | |
d311d28c PE |
4600 | ptrdiff_t pos = IT_CHARPOS (it); |
4601 | ptrdiff_t bytepos; | |
e68def1e AS |
4602 | |
4603 | /* If in the middle of a multi-glyph character move forward to | |
4604 | the next character. */ | |
4605 | if (in_display_vector_p (&it)) | |
4606 | { | |
4607 | ++pos; | |
4608 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
4609 | } | |
4610 | ||
5cdb3cf3 | 4611 | /* Set the window start, and set up the window for redisplay. */ |
f74de345 DA |
4612 | set_marker_restricted_both (w->start, w->buffer, IT_CHARPOS (it), |
4613 | IT_BYTEPOS (it)); | |
4c1acb95 | 4614 | bytepos = marker_byte_position (w->start); |
c98ff5dd DA |
4615 | w->start_at_line_beg = (pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n'); |
4616 | w->update_mode_line = 1; | |
80b00b08 DA |
4617 | w->last_modified = 0; |
4618 | w->last_overlay_modified = 0; | |
5cdb3cf3 MB |
4619 | /* Set force_start so that redisplay_window will run the |
4620 | window-scroll-functions. */ | |
c98ff5dd | 4621 | w->force_start = 1; |
5cdb3cf3 | 4622 | } |
177c0ea7 | 4623 | |
dc297565 RS |
4624 | /* The rest of this function uses current_y in a nonstandard way, |
4625 | not including the height of the header line if any. */ | |
5500c422 | 4626 | it.current_y = it.vpos = 0; |
177c0ea7 | 4627 | |
940f53e5 RS |
4628 | /* Move PT out of scroll margins. |
4629 | This code wants current_y to be zero at the window start position | |
4630 | even if there is a header line. */ | |
4631 | this_scroll_margin = max (0, scroll_margin); | |
3a45383a | 4632 | this_scroll_margin |
d3d50620 | 4633 | = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); |
940f53e5 RS |
4634 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); |
4635 | ||
4636 | if (n > 0) | |
5500c422 | 4637 | { |
940f53e5 RS |
4638 | /* We moved the window start towards ZV, so PT may be now |
4639 | in the scroll margin at the top. */ | |
4640 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
4641 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
4642 | && (NILP (Vscroll_preserve_screen_position) | |
4643 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4644 | /* We found PT at a legitimate height. Leave it alone. */ |
4645 | ; | |
66fe93d1 | 4646 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4647 | { |
fa3c3426 RS |
4648 | /* If we have a header line, take account of it. |
4649 | This is necessary because we set it.current_y to 0, above. */ | |
c876b227 SM |
4650 | move_it_to (&it, -1, |
4651 | window_scroll_pixel_based_preserve_x, | |
66fe93d1 LT |
4652 | window_scroll_pixel_based_preserve_y |
4653 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c876b227 | 4654 | -1, MOVE_TO_Y | MOVE_TO_X); |
940f53e5 RS |
4655 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4656 | } | |
4657 | else | |
5500c422 | 4658 | { |
5500c422 | 4659 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
4660 | { |
4661 | int prev = it.current_y; | |
e4cc2dfc | 4662 | move_it_by_lines (&it, 1); |
e9b2c961 RS |
4663 | if (prev == it.current_y) |
4664 | break; | |
4665 | } | |
5500c422 GM |
4666 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4667 | } | |
940f53e5 RS |
4668 | } |
4669 | else if (n < 0) | |
4670 | { | |
d311d28c | 4671 | ptrdiff_t charpos, bytepos; |
aed328bf | 4672 | int partial_p; |
940f53e5 | 4673 | |
66fe93d1 LT |
4674 | /* Save our position, for the |
4675 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
4676 | charpos = IT_CHARPOS (it); |
4677 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 4678 | |
940f53e5 RS |
4679 | /* We moved the window start towards BEGV, so PT may be now |
4680 | in the scroll margin at the bottom. */ | |
4681 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
4682 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
4683 | - this_scroll_margin - 1), | |
4684 | -1, | |
940f53e5 RS |
4685 | MOVE_TO_POS | MOVE_TO_Y); |
4686 | ||
aed328bf KS |
4687 | /* Save our position, in case it's correct. */ |
4688 | charpos = IT_CHARPOS (it); | |
4689 | bytepos = IT_BYTEPOS (it); | |
4690 | ||
4691 | /* See if point is on a partially visible line at the end. */ | |
4692 | if (it.what == IT_EOB) | |
4693 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
4694 | else | |
4695 | { | |
e4cc2dfc | 4696 | move_it_by_lines (&it, 1); |
aed328bf KS |
4697 | partial_p = it.current_y > it.last_visible_y; |
4698 | } | |
4699 | ||
bdf4ec93 RS |
4700 | if (charpos == PT && !partial_p |
4701 | && (NILP (Vscroll_preserve_screen_position) | |
4702 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4703 | /* We found PT before we found the display margin, so PT is ok. */ |
4704 | ; | |
66fe93d1 | 4705 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4706 | { |
d3d50620 | 4707 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
940f53e5 | 4708 | start_display (&it, w, start); |
c525d842 CY |
4709 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
4710 | here because we called start_display again and did not | |
4711 | alter it.current_y this time. */ | |
c876b227 SM |
4712 | move_it_to (&it, -1, window_scroll_pixel_based_preserve_x, |
4713 | window_scroll_pixel_based_preserve_y, -1, | |
4714 | MOVE_TO_Y | MOVE_TO_X); | |
940f53e5 RS |
4715 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4716 | } | |
4717 | else | |
4718 | { | |
aed328bf | 4719 | if (partial_p) |
5cdb3cf3 MB |
4720 | /* The last line was only partially visible, so back up two |
4721 | lines to make sure we're on a fully visible line. */ | |
4722 | { | |
e4cc2dfc | 4723 | move_it_by_lines (&it, -2); |
5cdb3cf3 MB |
4724 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4725 | } | |
4726 | else | |
4727 | /* No, the position we saved is OK, so use it. */ | |
4728 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
4729 | } |
4730 | } | |
35928349 | 4731 | bidi_unshelve_cache (itdata, 0); |
5500c422 GM |
4732 | } |
4733 | ||
4734 | ||
4735 | /* Implementation of window_scroll that works based on screen lines. | |
4736 | See the comment of window_scroll for parameter descriptions. */ | |
4737 | ||
4738 | static void | |
971de7fb | 4739 | window_scroll_line_based (Lisp_Object window, int n, int whole, int noerror) |
7ab12479 JB |
4740 | { |
4741 | register struct window *w = XWINDOW (window); | |
03ab8921 EZ |
4742 | /* Fvertical_motion enters redisplay, which can trigger |
4743 | fontification, which in turn can modify buffer text (e.g., if the | |
4744 | fontification functions replace escape sequences with faces, as | |
4745 | in `grep-mode-font-lock-keywords'). So we use a marker to record | |
4746 | the old point position, to prevent crashes in SET_PT_BOTH. */ | |
4747 | Lisp_Object opoint_marker = Fpoint_marker (); | |
d311d28c | 4748 | register ptrdiff_t pos, pos_byte; |
7ab12479 JB |
4749 | register int ht = window_internal_height (w); |
4750 | register Lisp_Object tem; | |
4751 | int lose; | |
5500c422 | 4752 | Lisp_Object bolp; |
c54aa166 DA |
4753 | ptrdiff_t startpos = marker_position (w->start); |
4754 | ptrdiff_t startbyte = marker_byte_position (w->start); | |
c876b227 | 4755 | Lisp_Object original_pos = Qnil; |
101d1605 | 4756 | |
d4e7cf01 GM |
4757 | /* If scrolling screen-fulls, compute the number of lines to |
4758 | scroll from the window's height. */ | |
4759 | if (whole) | |
4760 | n *= max (1, ht - next_screen_context_lines); | |
4761 | ||
c876b227 SM |
4762 | if (!NILP (Vscroll_preserve_screen_position)) |
4763 | { | |
4764 | if (window_scroll_preserve_vpos <= 0 | |
1344aad4 TT |
4765 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4766 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c876b227 SM |
4767 | { |
4768 | struct position posit | |
c54aa166 DA |
4769 | = *compute_motion (startpos, startbyte, 0, 0, 0, |
4770 | PT, ht, 0, -1, w->hscroll, 0, w); | |
c876b227 | 4771 | window_scroll_preserve_vpos = posit.vpos; |
80b00b08 | 4772 | window_scroll_preserve_hpos = posit.hpos + w->hscroll; |
c876b227 SM |
4773 | } |
4774 | ||
4775 | original_pos = Fcons (make_number (window_scroll_preserve_hpos), | |
4776 | make_number (window_scroll_preserve_vpos)); | |
4777 | } | |
0a1f771a | 4778 | |
d834a2e9 | 4779 | XSETFASTINT (tem, PT); |
6ffdb539 | 4780 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 4781 | |
265a9e55 | 4782 | if (NILP (tem)) |
7ab12479 | 4783 | { |
cd2be1dd | 4784 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 4785 | startpos = PT; |
c54aa166 | 4786 | startbyte = PT_BYTE; |
7ab12479 JB |
4787 | } |
4788 | ||
c54aa166 | 4789 | SET_PT_BOTH (startpos, startbyte); |
5ce7b543 | 4790 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 4791 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 4792 | pos = PT; |
b73ea88e | 4793 | pos_byte = PT_BYTE; |
7ab12479 | 4794 | bolp = Fbolp (); |
03ab8921 EZ |
4795 | SET_PT_BOTH (marker_position (opoint_marker), |
4796 | marker_byte_position (opoint_marker)); | |
7ab12479 JB |
4797 | |
4798 | if (lose) | |
f8026fd8 JB |
4799 | { |
4800 | if (noerror) | |
4801 | return; | |
4802 | else | |
ba96a5cf | 4803 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 4804 | } |
7ab12479 JB |
4805 | |
4806 | if (pos < ZV) | |
7ab12479 | 4807 | { |
0c7da84e | 4808 | /* Don't use a scroll margin that is negative or too large. */ |
71f02bc5 | 4809 | int this_scroll_margin = |
d3d50620 | 4810 | max (0, min (scroll_margin, XINT (w->total_lines) / 4)); |
0c7da84e | 4811 | |
d3d50620 | 4812 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
c98ff5dd DA |
4813 | w->start_at_line_beg = !NILP (bolp); |
4814 | w->update_mode_line = 1; | |
80b00b08 DA |
4815 | w->last_modified = 0; |
4816 | w->last_overlay_modified = 0; | |
345d45b2 RS |
4817 | /* Set force_start so that redisplay_window will run |
4818 | the window-scroll-functions. */ | |
c98ff5dd | 4819 | w->force_start = 1; |
0c7da84e | 4820 | |
bdf4ec93 RS |
4821 | if (!NILP (Vscroll_preserve_screen_position) |
4822 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 4823 | { |
b73ea88e | 4824 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4825 | Fvertical_motion (original_pos, window); |
0c7da84e | 4826 | } |
101d1605 RS |
4827 | /* If we scrolled forward, put point enough lines down |
4828 | that it is outside the scroll margin. */ | |
4829 | else if (n > 0) | |
0c7da84e | 4830 | { |
101d1605 RS |
4831 | int top_margin; |
4832 | ||
4833 | if (this_scroll_margin > 0) | |
4834 | { | |
b73ea88e | 4835 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4836 | Fvertical_motion (make_number (this_scroll_margin), window); |
4837 | top_margin = PT; | |
4838 | } | |
4839 | else | |
4840 | top_margin = pos; | |
4841 | ||
03ab8921 EZ |
4842 | if (top_margin <= marker_position (opoint_marker)) |
4843 | SET_PT_BOTH (marker_position (opoint_marker), | |
4844 | marker_byte_position (opoint_marker)); | |
5500c422 | 4845 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 4846 | { |
b73ea88e | 4847 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4848 | Fvertical_motion (original_pos, window); |
101d1605 | 4849 | } |
9317a85d | 4850 | else |
335406fc | 4851 | SET_PT (top_margin); |
0c7da84e | 4852 | } |
101d1605 | 4853 | else if (n < 0) |
7ab12479 | 4854 | { |
101d1605 RS |
4855 | int bottom_margin; |
4856 | ||
0c7da84e RS |
4857 | /* If we scrolled backward, put point near the end of the window |
4858 | but not within the scroll margin. */ | |
b73ea88e | 4859 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 4860 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
4861 | if (XFASTINT (tem) == ht - this_scroll_margin) |
4862 | bottom_margin = PT; | |
4863 | else | |
4864 | bottom_margin = PT + 1; | |
4865 | ||
03ab8921 EZ |
4866 | if (bottom_margin > marker_position (opoint_marker)) |
4867 | SET_PT_BOTH (marker_position (opoint_marker), | |
4868 | marker_byte_position (opoint_marker)); | |
7ab12479 | 4869 | else |
101d1605 | 4870 | { |
5500c422 | 4871 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 4872 | { |
b73ea88e | 4873 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4874 | Fvertical_motion (original_pos, window); |
9317a85d RS |
4875 | } |
4876 | else | |
4877 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 4878 | } |
7ab12479 JB |
4879 | } |
4880 | } | |
4881 | else | |
f8026fd8 JB |
4882 | { |
4883 | if (noerror) | |
4884 | return; | |
4885 | else | |
ba96a5cf | 4886 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 4887 | } |
7ab12479 | 4888 | } |
5500c422 GM |
4889 | |
4890 | ||
4891 | /* Scroll selected_window up or down. If N is nil, scroll a | |
4892 | screen-full which is defined as the height of the window minus | |
4893 | next_screen_context_lines. If N is the symbol `-', scroll. | |
4894 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
4895 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
4896 | |
4897 | static void | |
971de7fb | 4898 | scroll_command (Lisp_Object n, int direction) |
7ab12479 | 4899 | { |
d311d28c | 4900 | ptrdiff_t count = SPECPDL_INDEX (); |
7ab12479 | 4901 | |
a54e2c05 | 4902 | eassert (eabs (direction) == 1); |
5500c422 GM |
4903 | |
4904 | /* If selected window's buffer isn't current, make it current for | |
4905 | the moment. But don't screw up if window_scroll gets an error. */ | |
d3d50620 | 4906 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
4907 | { |
4908 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
d3d50620 | 4909 | Fset_buffer (XWINDOW (selected_window)->buffer); |
5500c422 GM |
4910 | |
4911 | /* Make redisplay consider other windows than just selected_window. */ | |
4912 | ++windows_or_buffers_changed; | |
95605e15 | 4913 | } |
7ab12479 | 4914 | |
265a9e55 | 4915 | if (NILP (n)) |
d4e7cf01 | 4916 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 4917 | else if (EQ (n, Qminus)) |
d4e7cf01 | 4918 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
4919 | else |
4920 | { | |
4921 | n = Fprefix_numeric_value (n); | |
101d1605 | 4922 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 4923 | } |
95605e15 JB |
4924 | |
4925 | unbind_to (count, Qnil); | |
7ab12479 JB |
4926 | } |
4927 | ||
e0965597 | 4928 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
12bb3111 | 4929 | doc: /* Scroll text of selected window upward ARG lines. |
a0a37a6f | 4930 | If ARG is omitted or nil, scroll upward by a near full screen. |
fdb82f93 PJ |
4931 | A near full screen is `next-screen-context-lines' less than a full screen. |
4932 | Negative ARG means scroll downward. | |
4933 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4934 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4935 | (Lisp_Object arg) |
7ab12479 | 4936 | { |
413430c5 | 4937 | scroll_command (arg, 1); |
7ab12479 JB |
4938 | return Qnil; |
4939 | } | |
4940 | ||
e0965597 | 4941 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
12bb3111 | 4942 | doc: /* Scroll text of selected window down ARG lines. |
a0a37a6f | 4943 | If ARG is omitted or nil, scroll down by a near full screen. |
fdb82f93 PJ |
4944 | A near full screen is `next-screen-context-lines' less than a full screen. |
4945 | Negative ARG means scroll upward. | |
4946 | If ARG is the atom `-', scroll upward by nearly full screen. | |
4947 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4948 | (Lisp_Object arg) |
7ab12479 | 4949 | { |
413430c5 | 4950 | scroll_command (arg, -1); |
7ab12479 JB |
4951 | return Qnil; |
4952 | } | |
ccd0664b RS |
4953 | \f |
4954 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 4955 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 4956 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
4957 | showing that buffer is used. |
4958 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4959 | specifies the window. This takes precedence over | |
4960 | `other-window-scroll-buffer'. */) | |
5842a27b | 4961 | (void) |
7ab12479 | 4962 | { |
ccd0664b | 4963 | Lisp_Object window; |
7ab12479 JB |
4964 | |
4965 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 4966 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
4967 | window = Vminibuf_scroll_window; |
4968 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 4969 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
4970 | { |
4971 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 4972 | if (NILP (window)) |
87478b52 | 4973 | window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
4974 | } |
4975 | else | |
dbc4e1c1 JB |
4976 | { |
4977 | /* Nothing specified; look for a neighboring window on the same | |
4978 | frame. */ | |
4979 | window = Fnext_window (selected_window, Qnil, Qnil); | |
4980 | ||
4981 | if (EQ (window, selected_window)) | |
4982 | /* That didn't get us anywhere; look for a window on another | |
4983 | visible frame. */ | |
4984 | do | |
4985 | window = Fnext_window (window, Qnil, Qt); | |
4986 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
4987 | && ! EQ (window, selected_window)); | |
4988 | } | |
4989 | ||
b7826503 | 4990 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
4991 | |
4992 | if (EQ (window, selected_window)) | |
4993 | error ("There is no other window"); | |
4994 | ||
ccd0664b RS |
4995 | return window; |
4996 | } | |
4997 | ||
4998 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
4999 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
5000 | A near full screen is `next-screen-context-lines' less than a full screen. | |
5001 | The next window is the one below the current one; or the one at the top | |
5002 | if the current one is at the bottom. Negative ARG means scroll downward. | |
5003 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5004 | When calling from a program, supply as argument a number, nil, or `-'. | |
5005 | ||
fdb82f93 | 5006 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5007 | showing that buffer, popping the buffer up if necessary. |
5008 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5009 | specifies the window to scroll. This takes precedence over | |
5010 | `other-window-scroll-buffer'. */) | |
5842a27b | 5011 | (Lisp_Object arg) |
ccd0664b | 5012 | { |
d4e7cf01 GM |
5013 | Lisp_Object window; |
5014 | struct window *w; | |
d311d28c | 5015 | ptrdiff_t count = SPECPDL_INDEX (); |
ccd0664b RS |
5016 | |
5017 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5018 | w = XWINDOW (window); |
7ab12479 JB |
5019 | |
5020 | /* Don't screw up if window_scroll gets an error. */ | |
5021 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5022 | ++windows_or_buffers_changed; |
7ab12479 | 5023 | |
d3d50620 | 5024 | Fset_buffer (w->buffer); |
ffcd945e | 5025 | SET_PT_BOTH (marker_position (w->pointm), marker_byte_position (w->pointm)); |
7ab12479 | 5026 | |
413430c5 | 5027 | if (NILP (arg)) |
d4e7cf01 | 5028 | window_scroll (window, 1, 1, 1); |
413430c5 | 5029 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5030 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5031 | else |
5032 | { | |
413430c5 | 5033 | if (CONSP (arg)) |
7d7bbefd | 5034 | arg = XCAR (arg); |
b7826503 | 5035 | CHECK_NUMBER (arg); |
101d1605 | 5036 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5037 | } |
5038 | ||
d3d50620 | 5039 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5040 | unbind_to (count, Qnil); |
7ab12479 JB |
5041 | |
5042 | return Qnil; | |
5043 | } | |
5044 | \f | |
e0965597 | 5045 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 5046 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5047 | Default for ARG is window width minus 2. |
5048 | Value is the total amount of leftward horizontal scrolling in | |
5049 | effect after the change. | |
23fe745a | 5050 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5051 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5052 | will not scroll a window to a column less than the value returned |
dc297565 | 5053 | by this function. This happens in an interactive call. */) |
5842a27b | 5054 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 5055 | { |
c67fa410 | 5056 | struct window *w = XWINDOW (selected_window); |
aa754e6a PE |
5057 | EMACS_INT requested_arg = (NILP (arg) |
5058 | ? window_body_cols (w) - 2 | |
5059 | : XINT (Fprefix_numeric_value (arg))); | |
24a212eb | 5060 | Lisp_Object result = set_window_hscroll (w, w->hscroll + requested_arg); |
c67fa410 | 5061 | |
dc297565 | 5062 | if (!NILP (set_minimum)) |
c67fa410 GM |
5063 | w->min_hscroll = w->hscroll; |
5064 | ||
5065 | return result; | |
7ab12479 JB |
5066 | } |
5067 | ||
e0965597 | 5068 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 5069 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5070 | Default for ARG is window width minus 2. |
5071 | Value is the total amount of leftward horizontal scrolling in | |
5072 | effect after the change. | |
23fe745a | 5073 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5074 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5075 | will not scroll a window to a column less than the value returned |
dc297565 | 5076 | by this function. This happens in an interactive call. */) |
5842a27b | 5077 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 5078 | { |
c67fa410 | 5079 | struct window *w = XWINDOW (selected_window); |
aa754e6a PE |
5080 | EMACS_INT requested_arg = (NILP (arg) |
5081 | ? window_body_cols (w) - 2 | |
5082 | : XINT (Fprefix_numeric_value (arg))); | |
24a212eb | 5083 | Lisp_Object result = set_window_hscroll (w, w->hscroll - requested_arg); |
177c0ea7 | 5084 | |
dc297565 | 5085 | if (!NILP (set_minimum)) |
c67fa410 GM |
5086 | w->min_hscroll = w->hscroll; |
5087 | ||
5088 | return result; | |
7ab12479 JB |
5089 | } |
5090 | ||
fa832261 KS |
5091 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5092 | doc: /* Return the window which was selected when entering the minibuffer. | |
12bb3111 | 5093 | Returns nil, if selected window is not a minibuffer window. */) |
5842a27b | 5094 | (void) |
fa832261 KS |
5095 | { |
5096 | if (minibuf_level > 0 | |
5097 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5098 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5099 | return minibuf_selected_window; | |
5100 | ||
5101 | return Qnil; | |
5102 | } | |
5103 | ||
12c8b416 GM |
5104 | /* Value is the number of lines actually displayed in window W, |
5105 | as opposed to its height. */ | |
5106 | ||
5107 | static int | |
971de7fb | 5108 | displayed_window_lines (struct window *w) |
12c8b416 GM |
5109 | { |
5110 | struct it it; | |
5111 | struct text_pos start; | |
4c1acb95 | 5112 | ptrdiff_t charpos = marker_position (w->start); |
12c8b416 GM |
5113 | int height = window_box_height (w); |
5114 | struct buffer *old_buffer; | |
5115 | int bottom_y; | |
57b3e30b | 5116 | void *itdata = NULL; |
12c8b416 | 5117 | |
d3d50620 | 5118 | if (XBUFFER (w->buffer) != current_buffer) |
12c8b416 GM |
5119 | { |
5120 | old_buffer = current_buffer; | |
d3d50620 | 5121 | set_buffer_internal (XBUFFER (w->buffer)); |
12c8b416 GM |
5122 | } |
5123 | else | |
5124 | old_buffer = NULL; | |
5125 | ||
521b203e GM |
5126 | /* In case W->start is out of the accessible range, do something |
5127 | reasonable. This happens in Info mode when Info-scroll-down | |
5128 | calls (recenter -1) while W->start is 1. */ | |
4c1acb95 | 5129 | if (charpos < BEGV) |
521b203e | 5130 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); |
4c1acb95 | 5131 | else if (charpos > ZV) |
521b203e GM |
5132 | SET_TEXT_POS (start, ZV, ZV_BYTE); |
5133 | else | |
d3d50620 | 5134 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
521b203e | 5135 | |
57b3e30b | 5136 | itdata = bidi_shelve_cache (); |
12c8b416 GM |
5137 | start_display (&it, w, start); |
5138 | move_it_vertically (&it, height); | |
c8bc6f65 | 5139 | bottom_y = line_bottom_y (&it); |
35928349 | 5140 | bidi_unshelve_cache (itdata, 0); |
12c8b416 | 5141 | |
1de65f51 RS |
5142 | /* rms: On a non-window display, |
5143 | the value of it.vpos at the bottom of the screen | |
5144 | seems to be 1 larger than window_box_height (w). | |
5145 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5146 | when ZV is on the last screen line | |
5147 | moves to the previous screen line instead of the last one. */ | |
d3d50620 | 5148 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) |
1de65f51 RS |
5149 | height++; |
5150 | ||
12c8b416 GM |
5151 | /* Add in empty lines at the bottom of the window. */ |
5152 | if (bottom_y < height) | |
5153 | { | |
949cf20f | 5154 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5155 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5156 | } |
5157 | ||
c8bc6f65 GM |
5158 | if (old_buffer) |
5159 | set_buffer_internal (old_buffer); | |
5160 | ||
12c8b416 GM |
5161 | return it.vpos; |
5162 | } | |
5163 | ||
5164 | ||
a7ca3326 | 5165 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
666e158e | 5166 | doc: /* Center point in selected window and maybe redisplay frame. |
3b166f09 | 5167 | With a numeric prefix argument ARG, recenter putting point on screen line ARG |
12bb3111 | 5168 | relative to the selected window. If ARG is negative, it counts up from the |
fdb82f93 PJ |
5169 | bottom of the window. (ARG should be less than the height of the window.) |
5170 | ||
666e158e MB |
5171 | If ARG is omitted or nil, then recenter with point on the middle line of |
5172 | the selected window; if the variable `recenter-redisplay' is non-nil, | |
5173 | also erase the entire frame and redraw it (when `auto-resize-tool-bars' | |
5174 | is set to `grow-only', this resets the tool-bar's height to the minimum | |
5175 | height needed); if `recenter-redisplay' has the special value `tty', | |
53524d93 | 5176 | then only tty frames are redrawn. |
7d1d98ee | 5177 | |
fdb82f93 PJ |
5178 | Just C-u as prefix means put point in the center of the window |
5179 | and redisplay normally--don't erase and redraw the frame. */) | |
5842a27b | 5180 | (register Lisp_Object arg) |
7ab12479 | 5181 | { |
6df47b59 | 5182 | struct window *w = XWINDOW (selected_window); |
d3d50620 | 5183 | struct buffer *buf = XBUFFER (w->buffer); |
478292ed | 5184 | struct buffer *obuf = current_buffer; |
6df47b59 | 5185 | int center_p = 0; |
d311d28c | 5186 | ptrdiff_t charpos, bytepos; |
71f02bc5 | 5187 | EMACS_INT iarg IF_LINT (= 0); |
f6b43440 | 5188 | int this_scroll_margin; |
7ab12479 | 5189 | |
0fa5d25b RS |
5190 | /* If redisplay is suppressed due to an error, try again. */ |
5191 | obuf->display_error_modiff = 0; | |
5192 | ||
413430c5 | 5193 | if (NILP (arg)) |
7ab12479 | 5194 | { |
666e158e MB |
5195 | if (!NILP (Vrecenter_redisplay) |
5196 | && (!EQ (Vrecenter_redisplay, Qtty) | |
5197 | || !NILP (Ftty_type (selected_frame)))) | |
5198 | { | |
ebfa62c0 | 5199 | ptrdiff_t i; |
f02d6d5c | 5200 | |
666e158e MB |
5201 | /* Invalidate pixel data calculated for all compositions. */ |
5202 | for (i = 0; i < n_compositions; i++) | |
5203 | composition_table[i]->font = NULL; | |
7ab12479 | 5204 | |
666e158e MB |
5205 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5206 | ||
5207 | Fredraw_frame (WINDOW_FRAME (w)); | |
5208 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
5209 | } | |
7d1d98ee | 5210 | |
6df47b59 | 5211 | center_p = 1; |
7ab12479 | 5212 | } |
413430c5 | 5213 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5214 | center_p = 1; |
7ab12479 JB |
5215 | else |
5216 | { | |
413430c5 | 5217 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5218 | CHECK_NUMBER (arg); |
ae12ecd7 | 5219 | iarg = XINT (arg); |
7ab12479 JB |
5220 | } |
5221 | ||
478292ed | 5222 | set_buffer_internal (buf); |
7ab12479 | 5223 | |
f6b43440 RS |
5224 | /* Do this after making BUF current |
5225 | in case scroll_margin is buffer-local. */ | |
71f02bc5 | 5226 | this_scroll_margin = |
d3d50620 | 5227 | max (0, min (scroll_margin, XFASTINT (w->total_lines) / 4)); |
f6b43440 | 5228 | |
521b203e | 5229 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5230 | have variable-height lines and centering point on the basis of |
5231 | line counts would lead to strange effects. */ | |
d3d50620 | 5232 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5233 | { |
6df47b59 GM |
5234 | if (center_p) |
5235 | { | |
521b203e GM |
5236 | struct it it; |
5237 | struct text_pos pt; | |
57b3e30b | 5238 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5239 | |
521b203e GM |
5240 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5241 | start_display (&it, w, pt); | |
f204989e | 5242 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5243 | charpos = IT_CHARPOS (it); |
5244 | bytepos = IT_BYTEPOS (it); | |
35928349 | 5245 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5246 | } |
f6b43440 | 5247 | else if (iarg < 0) |
6df47b59 | 5248 | { |
521b203e GM |
5249 | struct it it; |
5250 | struct text_pos pt; | |
5895d7b9 | 5251 | ptrdiff_t nlines = min (PTRDIFF_MAX, -iarg); |
f204989e KS |
5252 | int extra_line_spacing; |
5253 | int h = window_box_height (w); | |
57b3e30b | 5254 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5255 | |
f6b43440 RS |
5256 | iarg = - max (-iarg, this_scroll_margin); |
5257 | ||
521b203e GM |
5258 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5259 | start_display (&it, w, pt); | |
f204989e KS |
5260 | |
5261 | /* Be sure we have the exact height of the full line containing PT. */ | |
e4cc2dfc | 5262 | move_it_by_lines (&it, 0); |
521b203e | 5263 | |
d466fa4d | 5264 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5265 | height minus what's displayed in the line containing PT, |
5266 | and the lines below. */ | |
f204989e KS |
5267 | it.current_y = 0; |
5268 | it.vpos = 0; | |
e4cc2dfc | 5269 | move_it_by_lines (&it, nlines); |
d466fa4d | 5270 | |
f204989e KS |
5271 | if (it.vpos == nlines) |
5272 | h -= it.current_y; | |
5273 | else | |
5274 | { | |
5275 | /* Last line has no newline */ | |
5276 | h -= line_bottom_y (&it); | |
5277 | it.vpos++; | |
5278 | } | |
5279 | ||
5280 | /* Don't reserve space for extra line spacing of last line. */ | |
5281 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5282 | |
5283 | /* If we can't move down NLINES lines because we hit | |
5284 | the end of the buffer, count in some empty lines. */ | |
5285 | if (it.vpos < nlines) | |
f204989e KS |
5286 | { |
5287 | nlines -= it.vpos; | |
5288 | extra_line_spacing = it.extra_line_spacing; | |
5289 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5290 | } | |
5291 | if (h <= 0) | |
57b3e30b | 5292 | { |
35928349 | 5293 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
5294 | return Qnil; |
5295 | } | |
201c831a | 5296 | |
f204989e | 5297 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5298 | start_display (&it, w, pt); |
f204989e KS |
5299 | it.current_y = 0; |
5300 | move_it_vertically_backward (&it, h); | |
5301 | ||
5302 | /* If extra line spacing is present, we may move too far | |
5303 | back. This causes the last line to be only partially | |
5304 | visible (which triggers redisplay to recenter that line | |
5305 | in the middle), so move forward. | |
5306 | But ignore extra line spacing on last line, as it is not | |
5307 | considered to be part of the visible height of the line. | |
5308 | */ | |
5309 | h += extra_line_spacing; | |
5310 | while (-it.current_y > h) | |
e4cc2dfc | 5311 | move_it_by_lines (&it, 1); |
f204989e | 5312 | |
521b203e GM |
5313 | charpos = IT_CHARPOS (it); |
5314 | bytepos = IT_BYTEPOS (it); | |
57b3e30b | 5315 | |
35928349 | 5316 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5317 | } |
521b203e GM |
5318 | else |
5319 | { | |
5320 | struct position pos; | |
f6b43440 | 5321 | |
f6b43440 RS |
5322 | iarg = max (iarg, this_scroll_margin); |
5323 | ||
c54aa166 | 5324 | pos = *vmotion (PT, PT_BYTE, -iarg, w); |
521b203e GM |
5325 | charpos = pos.bufpos; |
5326 | bytepos = pos.bytepos; | |
5327 | } | |
5328 | } | |
5329 | else | |
5330 | { | |
5331 | struct position pos; | |
5332 | int ht = window_internal_height (w); | |
5333 | ||
5334 | if (center_p) | |
a4429c5b | 5335 | iarg = ht / 2; |
f567c488 KS |
5336 | else if (iarg < 0) |
5337 | iarg += ht; | |
f6b43440 RS |
5338 | |
5339 | /* Don't let it get into the margin at either top or bottom. */ | |
2dd61a9b DA |
5340 | iarg = clip_to_bounds (this_scroll_margin, iarg, |
5341 | ht - this_scroll_margin - 1); | |
177c0ea7 | 5342 | |
c54aa166 | 5343 | pos = *vmotion (PT, PT_BYTE, - iarg, w); |
6df47b59 GM |
5344 | charpos = pos.bufpos; |
5345 | bytepos = pos.bytepos; | |
5346 | } | |
5347 | ||
5348 | /* Set the new window start. */ | |
d3d50620 | 5349 | set_marker_both (w->start, w->buffer, charpos, bytepos); |
9d93ce29 | 5350 | w->window_end_valid = 0; |
177c0ea7 | 5351 | |
c98ff5dd | 5352 | w->optional_new_start = 1; |
95605b1b | 5353 | |
c98ff5dd DA |
5354 | w->start_at_line_beg = (bytepos == BEGV_BYTE || |
5355 | FETCH_BYTE (bytepos - 1) == '\n'); | |
177c0ea7 | 5356 | |
478292ed | 5357 | set_buffer_internal (obuf); |
7ab12479 JB |
5358 | return Qnil; |
5359 | } | |
b7617575 | 5360 | |
81fe0836 | 5361 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5362 | 0, 1, 0, |
5363 | doc: /* Return the height in lines of the text display area of WINDOW. | |
52162052 | 5364 | WINDOW must be a live window and defaults to the selected one. |
8fef9de1 | 5365 | |
105216ed CY |
5366 | The returned height does not include the mode line, any header line, |
5367 | nor any partial-height lines at the bottom of the text area. */) | |
5842a27b | 5368 | (Lisp_Object window) |
81fe0836 | 5369 | { |
52162052 | 5370 | struct window *w = decode_live_window (window); |
81fe0836 | 5371 | int pixel_height = window_box_height (w); |
d3d50620 | 5372 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5373 | return make_number (line_height); |
5374 | } | |
5375 | ||
5376 | ||
7ab12479 JB |
5377 | \f |
5378 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5379 | 1, 1, "P", |
5380 | doc: /* Position point relative to window. | |
87e68db4 JB |
5381 | ARG nil means position point at center of window. |
5382 | Else, ARG specifies vertical position within the window; | |
fdb82f93 | 5383 | zero means top of window, negative means relative to bottom of window. */) |
5842a27b | 5384 | (Lisp_Object arg) |
7ab12479 | 5385 | { |
b7617575 GM |
5386 | struct window *w = XWINDOW (selected_window); |
5387 | int lines, start; | |
540b6aa0 | 5388 | Lisp_Object window; |
f6b43440 RS |
5389 | #if 0 |
5390 | int this_scroll_margin; | |
5391 | #endif | |
7ab12479 | 5392 | |
d3d50620 DA |
5393 | if (!(BUFFERP (w->buffer) |
5394 | && XBUFFER (w->buffer) == current_buffer)) | |
794b75c7 SM |
5395 | /* This test is needed to make sure PT/PT_BYTE make sense in w->buffer |
5396 | when passed below to set_marker_both. */ | |
5397 | error ("move-to-window-line called from unrelated buffer"); | |
6dc1d2d3 | 5398 | |
b7617575 | 5399 | window = selected_window; |
d3d50620 | 5400 | start = marker_position (w->start); |
7ab12479 JB |
5401 | if (start < BEGV || start > ZV) |
5402 | { | |
b7617575 | 5403 | int height = window_internal_height (w); |
cd2be1dd | 5404 | Fvertical_motion (make_number (- (height / 2)), window); |
d3d50620 | 5405 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
c98ff5dd DA |
5406 | w->start_at_line_beg = !NILP (Fbolp ()); |
5407 | w->force_start = 1; | |
7ab12479 JB |
5408 | } |
5409 | else | |
d3d50620 | 5410 | Fgoto_char (w->start); |
7ab12479 | 5411 | |
b7617575 | 5412 | lines = displayed_window_lines (w); |
f6b43440 RS |
5413 | |
5414 | #if 0 | |
71f02bc5 | 5415 | this_scroll_margin = max (0, min (scroll_margin, lines / 4)); |
f6b43440 RS |
5416 | #endif |
5417 | ||
b7617575 GM |
5418 | if (NILP (arg)) |
5419 | XSETFASTINT (arg, lines / 2); | |
5420 | else | |
5421 | { | |
71f02bc5 | 5422 | EMACS_INT iarg = XINT (Fprefix_numeric_value (arg)); |
f6b43440 RS |
5423 | |
5424 | if (iarg < 0) | |
5425 | iarg = iarg + lines; | |
5426 | ||
5427 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5428 | to a place inside the scroll margins (which would cause the | |
5429 | next redisplay to scroll). I wrote this code, but then concluded | |
5430 | it is probably better not to install it. However, it is here | |
5431 | inside #if 0 so as not to lose it. -- rms. */ | |
5432 | ||
5433 | /* Don't let it get into the margin at either top or bottom. */ | |
5434 | iarg = max (iarg, this_scroll_margin); | |
5435 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5436 | #endif | |
5437 | ||
5438 | arg = make_number (iarg); | |
b7617575 GM |
5439 | } |
5440 | ||
c8bc6f65 | 5441 | /* Skip past a partially visible first line. */ |
163784df | 5442 | if (w->vscroll) |
163784df MB |
5443 | XSETINT (arg, XINT (arg) + 1); |
5444 | ||
540b6aa0 | 5445 | return Fvertical_motion (arg, window); |
7ab12479 | 5446 | } |
5500c422 GM |
5447 | |
5448 | ||
7ab12479 | 5449 | \f |
5500c422 GM |
5450 | /*********************************************************************** |
5451 | Window Configuration | |
5452 | ***********************************************************************/ | |
5453 | ||
7ab12479 JB |
5454 | struct save_window_data |
5455 | { | |
b102ceb1 | 5456 | struct vectorlike_header header; |
bdc727bf | 5457 | Lisp_Object selected_frame; |
7ab12479 JB |
5458 | Lisp_Object current_window; |
5459 | Lisp_Object current_buffer; | |
5460 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5461 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5462 | Lisp_Object root_window; |
bdc727bf | 5463 | Lisp_Object focus_frame; |
cbff28e8 RS |
5464 | /* A vector, each of whose elements is a struct saved_window |
5465 | for one window. */ | |
7ab12479 | 5466 | Lisp_Object saved_windows; |
b05b4e27 SM |
5467 | |
5468 | /* All fields above are traced by the GC. | |
5469 | From `fame-cols' down, the fields are ignored by the GC. */ | |
5470 | ||
5471 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
5472 | int frame_tool_bar_lines; | |
7ab12479 | 5473 | }; |
ff06df24 | 5474 | |
cbff28e8 | 5475 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 5476 | struct saved_window |
ea68264b | 5477 | { |
b102ceb1 | 5478 | struct vectorlike_header header; |
496e208e | 5479 | |
28545e04 | 5480 | Lisp_Object window, buffer, start, pointm, mark; |
949cf20f | 5481 | Lisp_Object left_col, top_line, total_cols, total_lines; |
496e208e | 5482 | Lisp_Object normal_cols, normal_lines; |
949cf20f | 5483 | Lisp_Object hscroll, min_hscroll; |
ea68264b GM |
5484 | Lisp_Object parent, prev; |
5485 | Lisp_Object start_at_line_beg; | |
5486 | Lisp_Object display_table; | |
949cf20f KS |
5487 | Lisp_Object left_margin_cols, right_margin_cols; |
5488 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
562dd5e9 | 5489 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type, dedicated; |
b6f67890 | 5490 | Lisp_Object combination_limit, window_parameters; |
ea68264b GM |
5491 | }; |
5492 | ||
7ab12479 JB |
5493 | #define SAVED_WINDOW_N(swv,n) \ |
5494 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
5495 | ||
5496 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 | 5497 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5842a27b | 5498 | (Lisp_Object object) |
7ab12479 | 5499 | { |
6ad0381c | 5500 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
5501 | } |
5502 | ||
3f8ab7bd | 5503 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 | 5504 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5842a27b | 5505 | (Lisp_Object config) |
3f8ab7bd RS |
5506 | { |
5507 | register struct save_window_data *data; | |
5508 | struct Lisp_Vector *saved_windows; | |
5509 | ||
663fbbba | 5510 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
5511 | |
5512 | data = (struct save_window_data *) XVECTOR (config); | |
5513 | saved_windows = XVECTOR (data->saved_windows); | |
d3d50620 | 5514 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
3f8ab7bd RS |
5515 | } |
5516 | ||
a7ca3326 | 5517 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
5518 | Sset_window_configuration, 1, 1, 0, |
5519 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
5520 | CONFIGURATION must be a value previously returned | |
5521 | by `current-window-configuration' (which see). | |
5522 | If CONFIGURATION was made from a frame that is now deleted, | |
5523 | only frame-independent values can be restored. In this case, | |
5524 | the return value is nil. Otherwise the value is t. */) | |
5842a27b | 5525 | (Lisp_Object configuration) |
7ab12479 | 5526 | { |
7ab12479 JB |
5527 | register struct save_window_data *data; |
5528 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 5529 | Lisp_Object new_current_buffer; |
fd482be5 | 5530 | Lisp_Object frame; |
44fa5b1e | 5531 | FRAME_PTR f; |
d311d28c | 5532 | ptrdiff_t old_point = -1; |
7ab12479 | 5533 | |
663fbbba | 5534 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 5535 | |
2f83aebe | 5536 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
5537 | saved_windows = XVECTOR (data->saved_windows); |
5538 | ||
7ab12479 | 5539 | new_current_buffer = data->current_buffer; |
e578f381 | 5540 | if (!BUFFER_LIVE_P (XBUFFER (new_current_buffer))) |
7ab12479 | 5541 | new_current_buffer = Qnil; |
72695e47 | 5542 | else |
73cadfc1 DK |
5543 | { |
5544 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
5545 | /* The code further down "preserves point" by saving here PT in |
5546 | old_point and then setting it later back into PT. When the | |
5547 | current-selected-window and the final-selected-window both show | |
5548 | the current buffer, this suffers from the problem that the | |
5549 | current PT is the window-point of the current-selected-window, | |
5550 | while the final PT is the point of the final-selected-window, so | |
5551 | this copy from one PT to the other would end up moving the | |
5552 | window-point of the final-selected-window to the window-point of | |
5553 | the current-selected-window. So we have to be careful which | |
5554 | point of the current-buffer we copy into old_point. */ | |
d3d50620 | 5555 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) |
e67a1dea | 5556 | && WINDOWP (selected_window) |
d3d50620 | 5557 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) |
e67a1dea | 5558 | && !EQ (selected_window, data->current_window)) |
4c1acb95 | 5559 | old_point = marker_position (XWINDOW (data->current_window)->pointm); |
e67a1dea SM |
5560 | else |
5561 | old_point = PT; | |
73cadfc1 | 5562 | else |
203eb0aa SM |
5563 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
5564 | point in new_current_buffer as of the last time this buffer was | |
5565 | used. This can be non-deterministic since it can be changed by | |
5566 | things like jit-lock by mere temporary selection of some random | |
5567 | window that happens to show this buffer. | |
5568 | So if possible we want this arbitrary choice of "which point" to | |
5569 | be the one from the to-be-selected-window so as to prevent this | |
5570 | window's cursor from being copied from another window. */ | |
d3d50620 | 5571 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) |
203eb0aa SM |
5572 | /* If current_window = selected_window, its point is in BUF_PT. */ |
5573 | && !EQ (selected_window, data->current_window)) | |
4c1acb95 | 5574 | old_point = marker_position (XWINDOW (data->current_window)->pointm); |
203eb0aa SM |
5575 | else |
5576 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 5577 | } |
7ab12479 | 5578 | |
d3d50620 | 5579 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
fd482be5 | 5580 | f = XFRAME (frame); |
177c0ea7 | 5581 | |
fd482be5 JB |
5582 | /* If f is a dead frame, don't bother rebuilding its window tree. |
5583 | However, there is other stuff we should still try to do below. */ | |
5584 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 5585 | { |
6198ccd0 MR |
5586 | Lisp_Object window; |
5587 | Lisp_Object dead_windows = Qnil; | |
6a6ee00d | 5588 | register Lisp_Object tem, par, pers; |
fd482be5 JB |
5589 | register struct window *w; |
5590 | register struct saved_window *p; | |
5500c422 GM |
5591 | struct window *root_window; |
5592 | struct window **leaf_windows; | |
5593 | int n_leaf_windows; | |
71f02bc5 PE |
5594 | ptrdiff_t k; |
5595 | int i, n; | |
fd482be5 JB |
5596 | |
5597 | /* If the frame has been resized since this window configuration was | |
5598 | made, we change the frame to the size specified in the | |
5599 | configuration, restore the configuration, and then resize it | |
5600 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
5601 | int previous_frame_lines = FRAME_LINES (f); |
5602 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 5603 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 5604 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 5605 | |
37b9743e MR |
5606 | /* Don't do this within the main loop below: This may call Lisp |
5607 | code and is thus potentially unsafe while input is blocked. */ | |
5608 | for (k = 0; k < saved_windows->header.size; k++) | |
5609 | { | |
5610 | p = SAVED_WINDOW_N (saved_windows, k); | |
5611 | window = p->window; | |
5612 | w = XWINDOW (window); | |
5613 | if (!NILP (w->buffer) | |
5614 | && !EQ (w->buffer, p->buffer) | |
e578f381 | 5615 | && BUFFER_LIVE_P (XBUFFER (p->buffer))) |
37b9743e MR |
5616 | /* If a window we restore gets another buffer, record the |
5617 | window's old buffer. */ | |
5618 | call1 (Qrecord_window_buffer, window); | |
5619 | } | |
5620 | ||
d2b35234 RS |
5621 | /* The mouse highlighting code could get screwed up |
5622 | if it runs during this. */ | |
4d7e6e51 | 5623 | block_input (); |
d2b35234 | 5624 | |
b05b4e27 SM |
5625 | if (data->frame_lines != previous_frame_lines |
5626 | || data->frame_cols != previous_frame_cols) | |
5627 | change_frame_size (f, data->frame_lines, | |
5628 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 5629 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 5630 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 5631 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
5632 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
5633 | make_number (0)); | |
4314246f | 5634 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 5635 | if (data->frame_tool_bar_lines |
9ea173e8 | 5636 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
5637 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
5638 | make_number (0)); | |
4314246f | 5639 | #endif |
217f2871 | 5640 | #endif |
fd482be5 | 5641 | |
a46c0153 RS |
5642 | /* "Swap out" point from the selected window's buffer |
5643 | into the window itself. (Normally the pointm of the selected | |
5644 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
5645 | restoring the window contents, and prevent it from |
5646 | being done later on when we select a new window. */ | |
d3d50620 | 5647 | if (! NILP (XWINDOW (selected_window)->buffer)) |
596ae0cf RS |
5648 | { |
5649 | w = XWINDOW (selected_window); | |
d3d50620 DA |
5650 | set_marker_both (w->pointm, |
5651 | w->buffer, | |
5652 | BUF_PT (XBUFFER (w->buffer)), | |
5653 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
596ae0cf RS |
5654 | } |
5655 | ||
fd482be5 | 5656 | windows_or_buffers_changed++; |
29aeee73 | 5657 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 5658 | |
5500c422 | 5659 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 5660 | is a serious redisplay flickering problem. What we would |
5500c422 | 5661 | really like to do is to free only those matrices not reused |
9d14503e | 5662 | below. */ |
5500c422 | 5663 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); |
38182d90 PE |
5664 | leaf_windows = alloca (count_windows (root_window) |
5665 | * sizeof *leaf_windows); | |
5500c422 GM |
5666 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); |
5667 | ||
fd482be5 JB |
5668 | /* Kludge Alert! |
5669 | Mark all windows now on frame as "deleted". | |
5670 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 5671 | |
fd482be5 JB |
5672 | Save their current buffers in their height fields, since we may |
5673 | need it later, if a buffer saved in the configuration is now | |
5674 | dead. */ | |
be7f5545 | 5675 | delete_all_child_windows (FRAME_ROOT_WINDOW (f)); |
fd482be5 | 5676 | |
eab3844f | 5677 | for (k = 0; k < saved_windows->header.size; k++) |
fd482be5 JB |
5678 | { |
5679 | p = SAVED_WINDOW_N (saved_windows, k); | |
6198ccd0 MR |
5680 | window = p->window; |
5681 | w = XWINDOW (window); | |
e8c17b81 | 5682 | wset_next (w, Qnil); |
7ab12479 | 5683 | |
fd482be5 | 5684 | if (!NILP (p->parent)) |
e8c17b81 PE |
5685 | wset_parent |
5686 | (w, SAVED_WINDOW_N (saved_windows, XFASTINT (p->parent))->window); | |
fd482be5 | 5687 | else |
e8c17b81 | 5688 | wset_parent (w, Qnil); |
7ab12479 | 5689 | |
fd482be5 | 5690 | if (!NILP (p->prev)) |
7ab12479 | 5691 | { |
e8c17b81 PE |
5692 | wset_prev |
5693 | (w, SAVED_WINDOW_N (saved_windows, XFASTINT (p->prev))->window); | |
5694 | wset_next (XWINDOW (w->prev), p->window); | |
fd482be5 JB |
5695 | } |
5696 | else | |
5697 | { | |
e8c17b81 | 5698 | wset_prev (w, Qnil); |
d3d50620 | 5699 | if (!NILP (w->parent)) |
fd482be5 | 5700 | { |
d3d50620 | 5701 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 | 5702 | { |
e8c17b81 PE |
5703 | wset_vchild (XWINDOW (w->parent), p->window); |
5704 | wset_hchild (XWINDOW (w->parent), Qnil); | |
fd482be5 JB |
5705 | } |
5706 | else | |
5707 | { | |
e8c17b81 PE |
5708 | wset_hchild (XWINDOW (w->parent), p->window); |
5709 | wset_vchild (XWINDOW (w->parent), Qnil); | |
fd482be5 JB |
5710 | } |
5711 | } | |
5712 | } | |
5713 | ||
5714 | /* If we squirreled away the buffer in the window's height, | |
5715 | restore it now. */ | |
d3d50620 | 5716 | if (BUFFERP (w->total_lines)) |
e8c17b81 PE |
5717 | wset_buffer (w, w->total_lines); |
5718 | wset_left_col (w, p->left_col); | |
5719 | wset_top_line (w, p->top_line); | |
5720 | wset_total_cols (w, p->total_cols); | |
5721 | wset_total_lines (w, p->total_lines); | |
5722 | wset_normal_cols (w, p->normal_cols); | |
5723 | wset_normal_lines (w, p->normal_lines); | |
80b00b08 DA |
5724 | w->hscroll = XFASTINT (p->hscroll); |
5725 | w->min_hscroll = XFASTINT (p->min_hscroll); | |
e8c17b81 PE |
5726 | wset_display_table (w, p->display_table); |
5727 | wset_left_margin_cols (w, p->left_margin_cols); | |
5728 | wset_right_margin_cols (w, p->right_margin_cols); | |
5729 | wset_left_fringe_width (w, p->left_fringe_width); | |
5730 | wset_right_fringe_width (w, p->right_fringe_width); | |
2af3565e | 5731 | w->fringes_outside_margins = !NILP (p->fringes_outside_margins); |
e8c17b81 PE |
5732 | wset_scroll_bar_width (w, p->scroll_bar_width); |
5733 | wset_vertical_scroll_bar_type (w, p->vertical_scroll_bar_type); | |
5734 | wset_dedicated (w, p->dedicated); | |
5735 | wset_combination_limit (w, p->combination_limit); | |
6a6ee00d MR |
5736 | /* Restore any window parameters that have been saved. |
5737 | Parameters that have not been saved are left alone. */ | |
5738 | for (tem = p->window_parameters; CONSP (tem); tem = XCDR (tem)) | |
5739 | { | |
5740 | pers = XCAR (tem); | |
5741 | if (CONSP (pers)) | |
5742 | { | |
5743 | if (NILP (XCDR (pers))) | |
5744 | { | |
d3d50620 | 5745 | par = Fassq (XCAR (pers), w->window_parameters); |
6a6ee00d MR |
5746 | if (CONSP (par) && !NILP (XCDR (par))) |
5747 | /* Reset a parameter to nil if and only if it | |
5748 | has a non-nil association. Don't make new | |
5749 | associations. */ | |
5750 | Fsetcdr (par, Qnil); | |
5751 | } | |
5752 | else | |
5753 | /* Always restore a non-nil value. */ | |
5754 | Fset_window_parameter (window, XCAR (pers), XCDR (pers)); | |
5755 | } | |
5756 | } | |
5757 | ||
80b00b08 DA |
5758 | w->last_modified = 0; |
5759 | w->last_overlay_modified = 0; | |
fd482be5 JB |
5760 | |
5761 | /* Reinstall the saved buffer and pointers into it. */ | |
5762 | if (NILP (p->buffer)) | |
6198ccd0 | 5763 | /* An internal window. */ |
e8c17b81 | 5764 | wset_buffer (w, p->buffer); |
e578f381 | 5765 | else if (BUFFER_LIVE_P (XBUFFER (p->buffer))) |
6198ccd0 MR |
5766 | /* If saved buffer is alive, install it. */ |
5767 | { | |
e8c17b81 PE |
5768 | wset_buffer (w, p->buffer); |
5769 | w->start_at_line_beg = !NILP (p->start_at_line_beg); | |
5770 | set_marker_restricted (w->start, p->start, w->buffer); | |
5771 | set_marker_restricted (w->pointm, p->pointm, | |
5772 | w->buffer); | |
5773 | Fset_marker (BVAR (XBUFFER (w->buffer), mark), | |
5774 | p->mark, w->buffer); | |
5775 | ||
5776 | /* As documented in Fcurrent_window_configuration, don't | |
5777 | restore the location of point in the buffer which was | |
5778 | current when the window configuration was recorded. */ | |
5779 | if (!EQ (p->buffer, new_current_buffer) | |
5780 | && XBUFFER (p->buffer) == current_buffer) | |
5781 | Fgoto_char (w->pointm); | |
077288cf | 5782 | } |
d3d50620 | 5783 | else if (!NILP (w->buffer) |
e578f381 | 5784 | && BUFFER_LIVE_P (XBUFFER (w->buffer))) |
077288cf DA |
5785 | /* Keep window's old buffer; make sure the markers are |
5786 | real. */ | |
5787 | { | |
5788 | /* Set window markers at start of visible range. */ | |
d3d50620 | 5789 | if (XMARKER (w->start)->buffer == 0) |
f74de345 | 5790 | set_marker_restricted_both (w->start, w->buffer, 0, 0); |
d3d50620 | 5791 | if (XMARKER (w->pointm)->buffer == 0) |
f00af5b1 | 5792 | set_marker_restricted_both |
d3d50620 DA |
5793 | (w->pointm, w->buffer, |
5794 | BUF_PT (XBUFFER (w->buffer)), | |
5795 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
077288cf DA |
5796 | w->start_at_line_beg = 1; |
5797 | } | |
fd482be5 | 5798 | else |
6198ccd0 | 5799 | /* Window has no live buffer, get one. */ |
fd482be5 | 5800 | { |
6198ccd0 MR |
5801 | /* Get the buffer via other_buffer_safely in order to |
5802 | avoid showing an unimportant buffer and, if necessary, to | |
5803 | recreate *scratch* in the course (part of Juanma's bs-show | |
5804 | scenario from March 2011). */ | |
e8c17b81 | 5805 | wset_buffer (w, other_buffer_safely (Fcurrent_buffer ())); |
6198ccd0 MR |
5806 | /* This will set the markers to beginning of visible |
5807 | range. */ | |
f74de345 DA |
5808 | set_marker_restricted_both (w->start, w->buffer, 0, 0); |
5809 | set_marker_restricted_both (w->pointm, w->buffer, 0, 0); | |
c98ff5dd | 5810 | w->start_at_line_beg = 1; |
d3d50620 | 5811 | if (!NILP (w->dedicated)) |
6198ccd0 MR |
5812 | /* Record this window as dead. */ |
5813 | dead_windows = Fcons (window, dead_windows); | |
5814 | /* Make sure window is no more dedicated. */ | |
e8c17b81 | 5815 | wset_dedicated (w, Qnil); |
7ab12479 JB |
5816 | } |
5817 | } | |
9ace597f | 5818 | |
f00af5b1 | 5819 | fset_root_window (f, data->root_window); |
a46c0153 RS |
5820 | /* Arrange *not* to restore point in the buffer that was |
5821 | current when the window configuration was saved. */ | |
d3d50620 DA |
5822 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
5823 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 5824 | make_number (old_point), |
d3d50620 | 5825 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 5826 | |
6198ccd0 MR |
5827 | /* In the following call to `select-window', prevent "swapping out |
5828 | point" in the old selected window using the buffer that has | |
5829 | been restored into it. We already swapped out that point from | |
5830 | that window's old buffer. */ | |
e6b84b30 | 5831 | select_window (data->current_window, Qnil, 1); |
d3d50620 | 5832 | BVAR (XBUFFER (XWINDOW (selected_window)->buffer), last_selected_window) |
396a830c | 5833 | = selected_window; |
7ab12479 | 5834 | |
db269683 | 5835 | if (NILP (data->focus_frame) |
017b2bad | 5836 | || (FRAMEP (data->focus_frame) |
db269683 JB |
5837 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
5838 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 5839 | |
fd482be5 | 5840 | /* Set the screen height to the value it had before this function. */ |
949cf20f KS |
5841 | if (previous_frame_lines != FRAME_LINES (f) |
5842 | || previous_frame_cols != FRAME_COLS (f)) | |
5843 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 5844 | 0, 0, 0); |
e3678b64 | 5845 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 5846 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
5847 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
5848 | make_number (0)); | |
4314246f | 5849 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5850 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
5851 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
5852 | make_number (0)); | |
4314246f | 5853 | #endif |
217f2871 | 5854 | #endif |
d2b35234 | 5855 | |
5500c422 | 5856 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
5857 | for (i = n = 0; i < n_leaf_windows; ++i) |
5858 | { | |
d3d50620 | 5859 | if (NILP (leaf_windows[i]->buffer)) |
c4280705 GM |
5860 | { |
5861 | /* Assert it's not reused as a combination. */ | |
d3d50620 DA |
5862 | eassert (NILP (leaf_windows[i]->hchild) |
5863 | && NILP (leaf_windows[i]->vchild)); | |
c4280705 | 5864 | free_window_matrices (leaf_windows[i]); |
c4280705 | 5865 | } |
d3d50620 | 5866 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) |
c4280705 GM |
5867 | ++n; |
5868 | } | |
177c0ea7 | 5869 | |
5500c422 | 5870 | adjust_glyphs (f); |
4d7e6e51 | 5871 | unblock_input (); |
756b6edc | 5872 | |
6198ccd0 MR |
5873 | /* Scan dead buffer windows. */ |
5874 | for (; CONSP (dead_windows); dead_windows = XCDR (dead_windows)) | |
5875 | { | |
5876 | window = XCAR (dead_windows); | |
5877 | if (WINDOW_LIVE_P (window) && !EQ (window, FRAME_ROOT_WINDOW (f))) | |
5878 | delete_deletable_window (window); | |
5879 | } | |
5880 | ||
478292ed RS |
5881 | /* Fselect_window will have made f the selected frame, so we |
5882 | reselect the proper frame here. Fhandle_switch_frame will change the | |
5883 | selected window too, but that doesn't make the call to | |
5884 | Fselect_window above totally superfluous; it still sets f's | |
5885 | selected window. */ | |
5886 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
c6932ecd | 5887 | do_switch_frame (data->selected_frame, 0, 0, Qnil); |
478292ed | 5888 | |
eeca6f6f | 5889 | run_window_configuration_change_hook (f); |
478292ed | 5890 | } |
bdc727bf JB |
5891 | |
5892 | if (!NILP (new_current_buffer)) | |
c4b6914d MR |
5893 | { |
5894 | Fset_buffer (new_current_buffer); | |
5895 | /* If the new current buffer doesn't appear in the selected | |
5896 | window, go to its old point (see bug#12208). */ | |
5897 | if (!EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) | |
5898 | Fgoto_char (make_number (old_point)); | |
5899 | } | |
bdc727bf | 5900 | |
478292ed | 5901 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 5902 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 5903 | |
3f8ab7bd | 5904 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
5905 | } |
5906 | ||
562dd5e9 | 5907 | |
be7f5545 MR |
5908 | /* Recursively delete all child windows reachable via the next, vchild, |
5909 | and hchild slots of WINDOW. */ | |
fd482be5 | 5910 | void |
be7f5545 | 5911 | delete_all_child_windows (Lisp_Object window) |
7ab12479 | 5912 | { |
fa8a67e6 MR |
5913 | register struct window *w; |
5914 | ||
5915 | w = XWINDOW (window); | |
5916 | ||
d3d50620 | 5917 | if (!NILP (w->next)) |
fa8a67e6 | 5918 | /* Delete WINDOW's siblings (we traverse postorderly). */ |
d3d50620 | 5919 | delete_all_child_windows (w->next); |
605be8af | 5920 | |
e8c17b81 PE |
5921 | /* See Fset_window_configuration for excuse. */ |
5922 | wset_total_lines (w, w->buffer); | |
605be8af | 5923 | |
d3d50620 | 5924 | if (!NILP (w->vchild)) |
fa8a67e6 | 5925 | { |
d3d50620 | 5926 | delete_all_child_windows (w->vchild); |
e8c17b81 | 5927 | wset_vchild (w, Qnil); |
fa8a67e6 | 5928 | } |
d3d50620 | 5929 | else if (!NILP (w->hchild)) |
fa8a67e6 | 5930 | { |
d3d50620 | 5931 | delete_all_child_windows (w->hchild); |
e8c17b81 | 5932 | wset_hchild (w, Qnil); |
fa8a67e6 | 5933 | } |
d3d50620 | 5934 | else if (!NILP (w->buffer)) |
fa8a67e6 MR |
5935 | { |
5936 | unshow_buffer (w); | |
d3d50620 DA |
5937 | unchain_marker (XMARKER (w->pointm)); |
5938 | unchain_marker (XMARKER (w->start)); | |
e8c17b81 | 5939 | wset_buffer (w, Qnil); |
fa8a67e6 | 5940 | } |
acf70840 GM |
5941 | |
5942 | Vwindow_list = Qnil; | |
7ab12479 JB |
5943 | } |
5944 | \f | |
5945 | static int | |
971de7fb | 5946 | count_windows (register struct window *window) |
7ab12479 JB |
5947 | { |
5948 | register int count = 1; | |
d3d50620 DA |
5949 | if (!NILP (window->next)) |
5950 | count += count_windows (XWINDOW (window->next)); | |
5951 | if (!NILP (window->vchild)) | |
5952 | count += count_windows (XWINDOW (window->vchild)); | |
5953 | if (!NILP (window->hchild)) | |
5954 | count += count_windows (XWINDOW (window->hchild)); | |
7ab12479 JB |
5955 | return count; |
5956 | } | |
5957 | ||
5500c422 | 5958 | |
177c0ea7 | 5959 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 | 5960 | Value is last index + 1. */ |
5500c422 | 5961 | static int |
971de7fb | 5962 | get_leaf_windows (struct window *w, struct window **flat, int i) |
5500c422 GM |
5963 | { |
5964 | while (w) | |
5965 | { | |
d3d50620 DA |
5966 | if (!NILP (w->hchild)) |
5967 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
5968 | else if (!NILP (w->vchild)) | |
5969 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 5970 | else |
5500c422 GM |
5971 | flat[i++] = w; |
5972 | ||
d3d50620 | 5973 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
5500c422 GM |
5974 | } |
5975 | ||
5976 | return i; | |
5977 | } | |
5978 | ||
5979 | ||
5980 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
c80e3b4a | 5981 | null if W's current matrix is invalid, so that no meaningful glyph |
5500c422 | 5982 | can be returned. */ |
5500c422 | 5983 | struct glyph * |
971de7fb | 5984 | get_phys_cursor_glyph (struct window *w) |
5500c422 GM |
5985 | { |
5986 | struct glyph_row *row; | |
5987 | struct glyph *glyph; | |
f8fe6f96 | 5988 | int hpos = w->phys_cursor.hpos; |
5500c422 | 5989 | |
f8fe6f96 EZ |
5990 | if (!(w->phys_cursor.vpos >= 0 |
5991 | && w->phys_cursor.vpos < w->current_matrix->nrows)) | |
5992 | return NULL; | |
5993 | ||
5994 | row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos); | |
5995 | if (!row->enabled_p) | |
5996 | return NULL; | |
5997 | ||
80b00b08 | 5998 | if (w->hscroll) |
f8fe6f96 EZ |
5999 | { |
6000 | /* When the window is hscrolled, cursor hpos can legitimately be | |
6001 | out of bounds, but we draw the cursor at the corresponding | |
6002 | window margin in that case. */ | |
6003 | if (!row->reversed_p && hpos < 0) | |
6004 | hpos = 0; | |
6005 | if (row->reversed_p && hpos >= row->used[TEXT_AREA]) | |
6006 | hpos = row->used[TEXT_AREA] - 1; | |
6007 | } | |
5500c422 | 6008 | |
f8fe6f96 EZ |
6009 | if (row->used[TEXT_AREA] > hpos |
6010 | && 0 <= hpos) | |
6011 | glyph = row->glyphs[TEXT_AREA] + hpos; | |
5500c422 GM |
6012 | else |
6013 | glyph = NULL; | |
6014 | ||
6015 | return glyph; | |
6016 | } | |
6017 | ||
6018 | ||
7ab12479 | 6019 | static int |
971de7fb | 6020 | save_window_save (Lisp_Object window, struct Lisp_Vector *vector, int i) |
7ab12479 JB |
6021 | { |
6022 | register struct saved_window *p; | |
6023 | register struct window *w; | |
6a6ee00d | 6024 | register Lisp_Object tem, pers, par; |
7ab12479 | 6025 | |
d3d50620 | 6026 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
6027 | { |
6028 | p = SAVED_WINDOW_N (vector, i); | |
6029 | w = XWINDOW (window); | |
6030 | ||
e8c17b81 | 6031 | wset_temslot (w, make_number (i)); i++; |
7ab12479 | 6032 | p->window = window; |
d3d50620 DA |
6033 | p->buffer = w->buffer; |
6034 | p->left_col = w->left_col; | |
6035 | p->top_line = w->top_line; | |
6036 | p->total_cols = w->total_cols; | |
6037 | p->total_lines = w->total_lines; | |
6038 | p->normal_cols = w->normal_cols; | |
6039 | p->normal_lines = w->normal_lines; | |
80b00b08 DA |
6040 | XSETFASTINT (p->hscroll, w->hscroll); |
6041 | XSETFASTINT (p->min_hscroll, w->min_hscroll); | |
d3d50620 DA |
6042 | p->display_table = w->display_table; |
6043 | p->left_margin_cols = w->left_margin_cols; | |
6044 | p->right_margin_cols = w->right_margin_cols; | |
6045 | p->left_fringe_width = w->left_fringe_width; | |
6046 | p->right_fringe_width = w->right_fringe_width; | |
2af3565e | 6047 | p->fringes_outside_margins = w->fringes_outside_margins ? Qt : Qnil; |
d3d50620 DA |
6048 | p->scroll_bar_width = w->scroll_bar_width; |
6049 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6050 | p->dedicated = w->dedicated; | |
6051 | p->combination_limit = w->combination_limit; | |
6a6ee00d MR |
6052 | p->window_parameters = Qnil; |
6053 | ||
6054 | if (!NILP (Vwindow_persistent_parameters)) | |
6055 | { | |
6056 | /* Run cycle detection on Vwindow_persistent_parameters. */ | |
6057 | Lisp_Object tortoise, hare; | |
6058 | ||
6059 | hare = tortoise = Vwindow_persistent_parameters; | |
6060 | while (CONSP (hare)) | |
6061 | { | |
6062 | hare = XCDR (hare); | |
6063 | if (!CONSP (hare)) | |
6064 | break; | |
6065 | ||
6066 | hare = XCDR (hare); | |
6067 | tortoise = XCDR (tortoise); | |
6068 | ||
6069 | if (EQ (hare, tortoise)) | |
6070 | /* Reset Vwindow_persistent_parameters to Qnil. */ | |
6071 | { | |
6072 | Vwindow_persistent_parameters = Qnil; | |
6073 | break; | |
6074 | } | |
6075 | } | |
6076 | ||
6077 | for (tem = Vwindow_persistent_parameters; CONSP (tem); | |
6078 | tem = XCDR (tem)) | |
6079 | { | |
6080 | pers = XCAR (tem); | |
34a02f46 MR |
6081 | /* Save values for persistent window parameters. */ |
6082 | if (CONSP (pers) && !NILP (XCDR (pers))) | |
6a6ee00d | 6083 | { |
d3d50620 | 6084 | par = Fassq (XCAR (pers), w->window_parameters); |
6a6ee00d MR |
6085 | if (NILP (par)) |
6086 | /* If the window has no value for the parameter, | |
6087 | make one. */ | |
6088 | p->window_parameters = Fcons (Fcons (XCAR (pers), Qnil), | |
6089 | p->window_parameters); | |
6090 | else | |
6091 | /* If the window has a value for the parameter, | |
6092 | save it. */ | |
6093 | p->window_parameters = Fcons (Fcons (XCAR (par), | |
6094 | XCDR (par)), | |
6095 | p->window_parameters); | |
6096 | } | |
6097 | } | |
6098 | } | |
6099 | ||
d3d50620 | 6100 | if (!NILP (w->buffer)) |
7ab12479 | 6101 | { |
6a6ee00d MR |
6102 | /* Save w's value of point in the window configuration. If w |
6103 | is the selected window, then get the value of point from | |
6104 | the buffer; pointm is garbage in the selected window. */ | |
7ab12479 | 6105 | if (EQ (window, selected_window)) |
d3d50620 DA |
6106 | p->pointm = build_marker (XBUFFER (w->buffer), |
6107 | BUF_PT (XBUFFER (w->buffer)), | |
6108 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 | 6109 | else |
d3d50620 | 6110 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
de8c03dc SM |
6111 | XMARKER (p->pointm)->insertion_type |
6112 | = !NILP (Vwindow_point_insertion_type); | |
7ab12479 | 6113 | |
d3d50620 | 6114 | p->start = Fcopy_marker (w->start, Qnil); |
c98ff5dd | 6115 | p->start_at_line_beg = w->start_at_line_beg ? Qt : Qnil; |
7ab12479 | 6116 | |
d3d50620 | 6117 | tem = BVAR (XBUFFER (w->buffer), mark); |
eeb82665 | 6118 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6119 | } |
6120 | else | |
6121 | { | |
6122 | p->pointm = Qnil; | |
6123 | p->start = Qnil; | |
6124 | p->mark = Qnil; | |
6125 | p->start_at_line_beg = Qnil; | |
6126 | } | |
6127 | ||
d3d50620 | 6128 | if (NILP (w->parent)) |
7ab12479 JB |
6129 | p->parent = Qnil; |
6130 | else | |
d3d50620 | 6131 | p->parent = XWINDOW (w->parent)->temslot; |
7ab12479 | 6132 | |
d3d50620 | 6133 | if (NILP (w->prev)) |
7ab12479 JB |
6134 | p->prev = Qnil; |
6135 | else | |
d3d50620 | 6136 | p->prev = XWINDOW (w->prev)->temslot; |
7ab12479 | 6137 | |
d3d50620 DA |
6138 | if (!NILP (w->vchild)) |
6139 | i = save_window_save (w->vchild, vector, i); | |
6140 | if (!NILP (w->hchild)) | |
6141 | i = save_window_save (w->hchild, vector, i); | |
7ab12479 JB |
6142 | } |
6143 | ||
6144 | return i; | |
6145 | } | |
6146 | ||
a7ca3326 | 6147 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6148 | Scurrent_window_configuration, 0, 1, 0, |
6149 | doc: /* Return an object representing the current window configuration of FRAME. | |
6150 | If FRAME is nil or omitted, use the selected frame. | |
6151 | This describes the number of windows, their sizes and current buffers, | |
6152 | and for each displayed buffer, where display starts, and the positions of | |
6153 | point and mark. An exception is made for point in the current buffer: | |
6154 | its value is -not- saved. | |
6155 | This also records the currently selected frame, and FRAME's focus | |
34a02f46 MR |
6156 | redirection (see `redirect-frame-focus'). The variable |
6157 | `window-persistent-parameters' specifies which window parameters are | |
6158 | saved by this function. */) | |
5842a27b | 6159 | (Lisp_Object frame) |
7ab12479 JB |
6160 | { |
6161 | register Lisp_Object tem; | |
6162 | register int n_windows; | |
6163 | register struct save_window_data *data; | |
6164 | register int i; | |
d9f07150 | 6165 | struct frame *f = decode_live_frame (frame); |
7ab12479 | 6166 | |
44fa5b1e | 6167 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
6168 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
6169 | PVEC_WINDOW_CONFIGURATION); | |
6170 | ||
6171 | data->frame_cols = FRAME_COLS (f); | |
6172 | data->frame_lines = FRAME_LINES (f); | |
6173 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
6174 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 6175 | data->selected_frame = selected_frame; |
44fa5b1e | 6176 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6177 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6178 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6179 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6180 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6181 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
25721f5b | 6182 | tem = make_uninit_vector (n_windows); |
7ab12479 JB |
6183 | data->saved_windows = tem; |
6184 | for (i = 0; i < n_windows; i++) | |
28be1ada | 6185 | ASET (tem, i, |
25721f5b | 6186 | Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil)); |
a1d58e5b | 6187 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6188 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6189 | return (tem); |
6190 | } | |
5500c422 GM |
6191 | \f |
6192 | /*********************************************************************** | |
6193 | Marginal Areas | |
6194 | ***********************************************************************/ | |
6195 | ||
6196 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6197 | 2, 3, 0, |
fdb82f93 | 6198 | doc: /* Set width of marginal areas of window WINDOW. |
52162052 MR |
6199 | WINDOW must be a live window and defaults to the selected one. |
6200 | ||
6b61353c KH |
6201 | Second arg LEFT-WIDTH specifies the number of character cells to |
6202 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6203 | does the same for the right marginal area. A nil width parameter | |
6204 | means no margin. */) | |
5842a27b | 6205 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width) |
5500c422 | 6206 | { |
52162052 | 6207 | struct window *w = decode_live_window (window); |
5500c422 | 6208 | |
6b61353c KH |
6209 | /* Translate negative or zero widths to nil. |
6210 | Margins that are too wide have to be checked elsewhere. */ | |
949cf20f | 6211 | |
c10ce82e | 6212 | if (!NILP (left_width)) |
6b61353c | 6213 | { |
c10ce82e JB |
6214 | CHECK_NUMBER (left_width); |
6215 | if (XINT (left_width) <= 0) | |
6216 | left_width = Qnil; | |
6b61353c | 6217 | } |
5500c422 | 6218 | |
c10ce82e | 6219 | if (!NILP (right_width)) |
6b61353c | 6220 | { |
c10ce82e JB |
6221 | CHECK_NUMBER (right_width); |
6222 | if (XINT (right_width) <= 0) | |
6223 | right_width = Qnil; | |
6b61353c | 6224 | } |
5500c422 | 6225 | |
d3d50620 DA |
6226 | if (!EQ (w->left_margin_cols, left_width) |
6227 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6228 | { |
e8c17b81 PE |
6229 | wset_left_margin_cols (w, left_width); |
6230 | wset_right_margin_cols (w, right_width); | |
949cf20f KS |
6231 | |
6232 | adjust_window_margins (w); | |
6233 | ||
6234 | ++windows_or_buffers_changed; | |
6235 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6236 | } | |
5500c422 | 6237 | |
5500c422 GM |
6238 | return Qnil; |
6239 | } | |
6240 | ||
6241 | ||
6242 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6243 | 0, 1, 0, | |
fdb82f93 | 6244 | doc: /* Get width of marginal areas of window WINDOW. |
52162052 MR |
6245 | WINDOW must be a live window and defaults to the selected one. |
6246 | ||
fdb82f93 PJ |
6247 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). |
6248 | If a marginal area does not exist, its width will be returned | |
6249 | as nil. */) | |
5842a27b | 6250 | (Lisp_Object window) |
5500c422 | 6251 | { |
52162052 | 6252 | struct window *w = decode_live_window (window); |
d3d50620 | 6253 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
949cf20f KS |
6254 | } |
6255 | ||
6256 | ||
6257 | \f | |
6258 | /*********************************************************************** | |
6259 | Fringes | |
6260 | ***********************************************************************/ | |
6261 | ||
a7ca3326 | 6262 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, |
949cf20f | 6263 | 2, 4, 0, |
6b61353c | 6264 | doc: /* Set the fringe widths of window WINDOW. |
52162052 MR |
6265 | WINDOW must be a live window and defaults to the selected one. |
6266 | ||
6b61353c KH |
6267 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for |
6268 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6269 | fringe width. If a fringe width arg is nil, that means to use the | |
6270 | frame's default fringe width. Default fringe widths can be set with | |
6271 | the command `set-fringe-style'. | |
6272 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6273 | outside of the display margins. By default, fringes are drawn between | |
6274 | display marginal areas and the text area. */) | |
5842a27b | 6275 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width, Lisp_Object outside_margins) |
949cf20f | 6276 | { |
52162052 | 6277 | struct window *w = decode_live_window (window); |
2af3565e | 6278 | int outside = !NILP (outside_margins); |
949cf20f | 6279 | |
c10ce82e JB |
6280 | if (!NILP (left_width)) |
6281 | CHECK_NATNUM (left_width); | |
6282 | if (!NILP (right_width)) | |
6283 | CHECK_NATNUM (right_width); | |
5a857365 | 6284 | |
017e297e | 6285 | /* Do nothing on a tty. */ |
d46c6df5 | 6286 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
d3d50620 DA |
6287 | && (!EQ (w->left_fringe_width, left_width) |
6288 | || !EQ (w->right_fringe_width, right_width) | |
2af3565e | 6289 | || w->fringes_outside_margins != outside)) |
949cf20f | 6290 | { |
e8c17b81 PE |
6291 | wset_left_fringe_width (w, left_width); |
6292 | wset_right_fringe_width (w, right_width); | |
2af3565e | 6293 | w->fringes_outside_margins = outside; |
949cf20f KS |
6294 | |
6295 | adjust_window_margins (w); | |
6296 | ||
6297 | clear_glyph_matrix (w->current_matrix); | |
9d93ce29 | 6298 | w->window_end_valid = 0; |
949cf20f KS |
6299 | |
6300 | ++windows_or_buffers_changed; | |
6301 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6302 | } | |
6303 | ||
6304 | return Qnil; | |
6305 | } | |
6306 | ||
6307 | ||
6308 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6309 | 0, 1, 0, | |
6310 | doc: /* Get width of fringes of window WINDOW. | |
52162052 MR |
6311 | WINDOW must be a live window and defaults to the selected one. |
6312 | ||
6b61353c | 6313 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
5842a27b | 6314 | (Lisp_Object window) |
949cf20f | 6315 | { |
52162052 | 6316 | struct window *w = decode_live_window (window); |
d46c6df5 | 6317 | |
89bc0592 DA |
6318 | return list3 (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6319 | make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
6320 | WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) ? Qt : Qnil); | |
949cf20f KS |
6321 | } |
6322 | ||
6323 | ||
6324 | \f | |
6325 | /*********************************************************************** | |
6326 | Scroll bars | |
6327 | ***********************************************************************/ | |
6328 | ||
a7ca3326 | 6329 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, |
16a97296 | 6330 | Sset_window_scroll_bars, 2, 4, 0, |
949cf20f | 6331 | doc: /* Set width and type of scroll bars of window WINDOW. |
52162052 MR |
6332 | WINDOW must be a live window and defaults to the selected one. |
6333 | ||
949cf20f KS |
6334 | Second parameter WIDTH specifies the pixel width for the scroll bar; |
6335 | this is automatically adjusted to a multiple of the frame column width. | |
6336 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6337 | bar: left, right, or nil. | |
6b61353c | 6338 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6339 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6340 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
5842a27b | 6341 | (Lisp_Object window, Lisp_Object width, Lisp_Object vertical_type, Lisp_Object horizontal_type) |
949cf20f | 6342 | { |
52162052 | 6343 | struct window *w = decode_live_window (window); |
949cf20f KS |
6344 | |
6345 | if (!NILP (width)) | |
0f8fe9a2 | 6346 | { |
af5a5a98 | 6347 | CHECK_RANGED_INTEGER (width, 0, INT_MAX); |
949cf20f | 6348 | |
0f8fe9a2 SM |
6349 | if (XINT (width) == 0) |
6350 | vertical_type = Qnil; | |
6351 | } | |
949cf20f | 6352 | |
413a79ad | 6353 | if (!(NILP (vertical_type) |
0cc1039f | 6354 | || EQ (vertical_type, Qleft) |
6b61353c KH |
6355 | || EQ (vertical_type, Qright) |
6356 | || EQ (vertical_type, Qt))) | |
6357 | error ("Invalid type of vertical scroll bar"); | |
6358 | ||
d3d50620 DA |
6359 | if (!EQ (w->scroll_bar_width, width) |
6360 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
949cf20f | 6361 | { |
e8c17b81 PE |
6362 | wset_scroll_bar_width (w, width); |
6363 | wset_vertical_scroll_bar_type (w, vertical_type); | |
949cf20f KS |
6364 | |
6365 | adjust_window_margins (w); | |
6366 | ||
6367 | clear_glyph_matrix (w->current_matrix); | |
9d93ce29 | 6368 | w->window_end_valid = 0; |
949cf20f KS |
6369 | |
6370 | ++windows_or_buffers_changed; | |
6371 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6372 | } | |
6373 | ||
6374 | return Qnil; | |
6375 | } | |
6376 | ||
6377 | ||
6378 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6379 | 0, 1, 0, | |
6380 | doc: /* Get width and type of scroll bars of window WINDOW. | |
52162052 MR |
6381 | WINDOW must be a live window and defaults to the selected one. |
6382 | ||
6b61353c KH |
6383 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6384 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6385 | value. */) | |
5842a27b | 6386 | (Lisp_Object window) |
949cf20f | 6387 | { |
52162052 | 6388 | struct window *w = decode_live_window (window); |
89bc0592 DA |
6389 | |
6390 | return list4 (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
949cf20f KS |
6391 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) |
6392 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
89bc0592 DA |
6393 | make_number (WINDOW_SCROLL_BAR_COLS (w)), |
6394 | w->vertical_scroll_bar_type, Qnil); | |
5500c422 GM |
6395 | } |
6396 | ||
6397 | ||
7ab12479 | 6398 | \f |
5500c422 GM |
6399 | /*********************************************************************** |
6400 | Smooth scrolling | |
6401 | ***********************************************************************/ | |
6402 | ||
0cc1039f | 6403 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 | 6404 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
49745b39 | 6405 | If WINDOW is omitted or nil, it defaults to the selected window. |
0cc1039f | 6406 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6407 | optional second arg PIXELS-P means value is measured in pixels. */) |
5842a27b | 6408 | (Lisp_Object window, Lisp_Object pixels_p) |
5500c422 | 6409 | { |
47004952 | 6410 | Lisp_Object result; |
1f76f6f5 MR |
6411 | struct window *w = decode_live_window (window); |
6412 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 6413 | |
5500c422 | 6414 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6415 | result = (NILP (pixels_p) |
6416 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6417 | : make_number (-w->vscroll)); | |
5500c422 | 6418 | else |
47004952 GM |
6419 | result = make_number (0); |
6420 | return result; | |
5500c422 GM |
6421 | } |
6422 | ||
6423 | ||
6424 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6425 | 2, 3, 0, |
fdb82f93 | 6426 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6427 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6428 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6429 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6430 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6431 | corresponds to an integral number of pixels. The return value is the | |
6432 | result of this rounding. | |
6433 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
5842a27b | 6434 | (Lisp_Object window, Lisp_Object vscroll, Lisp_Object pixels_p) |
5500c422 | 6435 | { |
1f76f6f5 MR |
6436 | struct window *w = decode_live_window (window); |
6437 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 6438 | |
b7826503 | 6439 | CHECK_NUMBER_OR_FLOAT (vscroll); |
177c0ea7 | 6440 | |
5500c422 GM |
6441 | if (FRAME_WINDOW_P (f)) |
6442 | { | |
6443 | int old_dy = w->vscroll; | |
177c0ea7 | 6444 | |
0cc1039f KS |
6445 | w->vscroll = - (NILP (pixels_p) |
6446 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6447 | : XFLOATINT (vscroll)); | |
47004952 | 6448 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6449 | |
e56263e5 KS |
6450 | if (w->vscroll != old_dy) |
6451 | { | |
6452 | /* Adjust glyph matrix of the frame if the virtual display | |
6453 | area becomes larger than before. */ | |
6454 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
6455 | adjust_glyphs (f); | |
177c0ea7 | 6456 | |
e56263e5 | 6457 | /* Prevent redisplay shortcuts. */ |
d3d50620 | 6458 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
e56263e5 | 6459 | } |
5500c422 | 6460 | } |
177c0ea7 | 6461 | |
0cc1039f | 6462 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 6463 | } |
177c0ea7 | 6464 | |
7bbb5782 GM |
6465 | \f |
6466 | /* Call FN for all leaf windows on frame F. FN is called with the | |
6467 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 6468 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 | 6469 | |
2f7c71a1 AS |
6470 | static void |
6471 | foreach_window (struct frame *f, int (*fn) (struct window *, void *), | |
6472 | void *user_data) | |
7bbb5782 | 6473 | { |
56f2de10 | 6474 | /* delete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
76fb556f YM |
6475 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) |
6476 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
6477 | } |
6478 | ||
6479 | ||
6480 | /* Helper function for foreach_window. Call FN for all leaf windows | |
6481 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 6482 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 6483 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 6484 | |
67492200 | 6485 | static int |
971de7fb | 6486 | foreach_window_1 (struct window *w, int (*fn) (struct window *, void *), void *user_data) |
7bbb5782 | 6487 | { |
67492200 | 6488 | int cont; |
177c0ea7 | 6489 | |
67492200 | 6490 | for (cont = 1; w && cont;) |
7bbb5782 | 6491 | { |
d3d50620 DA |
6492 | if (!NILP (w->hchild)) |
6493 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); | |
6494 | else if (!NILP (w->vchild)) | |
6495 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); | |
177c0ea7 | 6496 | else |
0f532a9a | 6497 | cont = fn (w, user_data); |
177c0ea7 | 6498 | |
d3d50620 | 6499 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
7bbb5782 | 6500 | } |
67492200 GM |
6501 | |
6502 | return cont; | |
7bbb5782 GM |
6503 | } |
6504 | ||
6505 | ||
6d194a45 | 6506 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 6507 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
6508 | the window start. */ |
6509 | ||
67492200 | 6510 | static int |
971de7fb | 6511 | freeze_window_start (struct window *w, void *freeze_p) |
7bbb5782 | 6512 | { |
08c1d235 SM |
6513 | if (MINI_WINDOW_P (w) |
6514 | || (WINDOWP (selected_window) /* Can be nil in corner cases. */ | |
6515 | && (w == XWINDOW (selected_window) | |
6516 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
6517 | && ! NILP (Vminibuf_scroll_window) | |
6518 | && w == XWINDOW (Vminibuf_scroll_window))))) | |
f95464e4 | 6519 | freeze_p = NULL; |
177c0ea7 | 6520 | |
f95464e4 | 6521 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 6522 | return 1; |
7bbb5782 GM |
6523 | } |
6524 | ||
6525 | ||
6526 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
6527 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
6528 | means freeze the window start. */ | |
6529 | ||
6530 | void | |
748fa866 | 6531 | freeze_window_starts (struct frame *f, bool freeze_p) |
7bbb5782 | 6532 | { |
cbccabec | 6533 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 6534 | } |
5500c422 GM |
6535 | |
6536 | \f | |
6537 | /*********************************************************************** | |
6538 | Initialization | |
6539 | ***********************************************************************/ | |
6540 | ||
6198ccd0 MR |
6541 | /* Return 1 if window configurations CONFIGURATION1 and CONFIGURATION2 |
6542 | describe the same state of affairs. This is used by Fequal. | |
6543 | ||
f75d7a91 | 6544 | IGNORE_POSITIONS means ignore non-matching scroll positions |
6198ccd0 MR |
6545 | and the like. |
6546 | ||
e4769531 | 6547 | This ignores a couple of things like the dedication status of |
b6f67890 MR |
6548 | window, combination_limit and the like. This might have to be |
6549 | fixed. */ | |
cbff28e8 | 6550 | |
f75d7a91 PE |
6551 | bool |
6552 | compare_window_configurations (Lisp_Object configuration1, | |
6553 | Lisp_Object configuration2, | |
6554 | bool ignore_positions) | |
cbff28e8 RS |
6555 | { |
6556 | register struct save_window_data *d1, *d2; | |
6198ccd0 | 6557 | struct Lisp_Vector *sws1, *sws2; |
71f02bc5 | 6558 | ptrdiff_t i; |
cbff28e8 | 6559 | |
6198ccd0 MR |
6560 | CHECK_WINDOW_CONFIGURATION (configuration1); |
6561 | CHECK_WINDOW_CONFIGURATION (configuration2); | |
6562 | ||
6563 | d1 = (struct save_window_data *) XVECTOR (configuration1); | |
6564 | d2 = (struct save_window_data *) XVECTOR (configuration2); | |
6565 | sws1 = XVECTOR (d1->saved_windows); | |
6566 | sws2 = XVECTOR (d2->saved_windows); | |
6567 | ||
6568 | /* Frame settings must match. */ | |
6569 | if (d1->frame_cols != d2->frame_cols | |
6570 | || d1->frame_lines != d2->frame_lines | |
6571 | || d1->frame_menu_bar_lines != d2->frame_menu_bar_lines | |
6572 | || !EQ (d1->selected_frame, d2->selected_frame) | |
6573 | || !EQ (d1->current_buffer, d2->current_buffer) | |
6574 | || (!ignore_positions | |
6575 | && (!EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window) | |
6576 | || !EQ (d1->minibuf_selected_window, d2->minibuf_selected_window))) | |
6577 | || !EQ (d1->focus_frame, d2->focus_frame) | |
6578 | /* Verify that the two configurations have the same number of windows. */ | |
6579 | || sws1->header.size != sws2->header.size) | |
cbff28e8 | 6580 | return 0; |
cbff28e8 | 6581 | |
6198ccd0 | 6582 | for (i = 0; i < sws1->header.size; i++) |
cbff28e8 | 6583 | { |
6198ccd0 | 6584 | struct saved_window *sw1, *sw2; |
cbff28e8 | 6585 | |
6198ccd0 MR |
6586 | sw1 = SAVED_WINDOW_N (sws1, i); |
6587 | sw2 = SAVED_WINDOW_N (sws2, i); | |
6588 | ||
6589 | if ( | |
6590 | /* The "current" windows in the two configurations must | |
6591 | correspond to each other. */ | |
6592 | EQ (d1->current_window, sw1->window) | |
6593 | != EQ (d2->current_window, sw2->window) | |
6594 | /* Windows' buffers must match. */ | |
6595 | || !EQ (sw1->buffer, sw2->buffer) | |
6596 | || !EQ (sw1->left_col, sw2->left_col) | |
6597 | || !EQ (sw1->top_line, sw2->top_line) | |
6598 | || !EQ (sw1->total_cols, sw2->total_cols) | |
6599 | || !EQ (sw1->total_lines, sw2->total_lines) | |
6600 | || !EQ (sw1->display_table, sw2->display_table) | |
6601 | /* The next two disjuncts check the window structure for | |
6602 | equality. */ | |
6603 | || !EQ (sw1->parent, sw2->parent) | |
6604 | || !EQ (sw1->prev, sw2->prev) | |
6605 | || (!ignore_positions | |
6606 | && (!EQ (sw1->hscroll, sw2->hscroll) | |
6607 | || !EQ (sw1->min_hscroll, sw2->min_hscroll) | |
6608 | || !EQ (sw1->start_at_line_beg, sw2->start_at_line_beg) | |
6609 | || NILP (Fequal (sw1->start, sw2->start)) | |
6610 | || NILP (Fequal (sw1->pointm, sw2->pointm)) | |
6611 | || NILP (Fequal (sw1->mark, sw2->mark)))) | |
6612 | || !EQ (sw1->left_margin_cols, sw2->left_margin_cols) | |
6613 | || !EQ (sw1->right_margin_cols, sw2->right_margin_cols) | |
6614 | || !EQ (sw1->left_fringe_width, sw2->left_fringe_width) | |
6615 | || !EQ (sw1->right_fringe_width, sw2->right_fringe_width) | |
6616 | || !EQ (sw1->fringes_outside_margins, sw2->fringes_outside_margins) | |
6617 | || !EQ (sw1->scroll_bar_width, sw2->scroll_bar_width) | |
6618 | || !EQ (sw1->vertical_scroll_bar_type, sw2->vertical_scroll_bar_type)) | |
949cf20f | 6619 | return 0; |
cbff28e8 RS |
6620 | } |
6621 | ||
6622 | return 1; | |
6623 | } | |
2f8274be RS |
6624 | |
6625 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
6626 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
6627 | doc: /* Compare two window configurations as regards the structure of windows. |
6628 | This function ignores details such as the values of point and mark | |
6629 | and scrolling positions. */) | |
5842a27b | 6630 | (Lisp_Object x, Lisp_Object y) |
2f8274be RS |
6631 | { |
6632 | if (compare_window_configurations (x, y, 1)) | |
6633 | return Qt; | |
6634 | return Qnil; | |
6635 | } | |
cbff28e8 | 6636 | \f |
dfcf069d | 6637 | void |
971de7fb | 6638 | init_window_once (void) |
7ab12479 | 6639 | { |
3224dac1 | 6640 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
6641 | XSETFRAME (selected_frame, f); |
6642 | Vterminal_frame = selected_frame; | |
e69b0960 DA |
6643 | minibuf_window = f->minibuffer_window; |
6644 | selected_window = f->selected_window; | |
1ae1a37d | 6645 | last_nonminibuf_frame = f; |
5b03d3c0 RS |
6646 | |
6647 | window_initialized = 1; | |
7ab12479 JB |
6648 | } |
6649 | ||
67492200 | 6650 | void |
971de7fb | 6651 | init_window (void) |
67492200 GM |
6652 | { |
6653 | Vwindow_list = Qnil; | |
6654 | } | |
6655 | ||
dfcf069d | 6656 | void |
971de7fb | 6657 | syms_of_window (void) |
7ab12479 | 6658 | { |
cd3520a4 JB |
6659 | DEFSYM (Qscroll_up, "scroll-up"); |
6660 | DEFSYM (Qscroll_down, "scroll-down"); | |
6661 | DEFSYM (Qscroll_command, "scroll-command"); | |
a4b000fb JL |
6662 | |
6663 | Fput (Qscroll_up, Qscroll_command, Qt); | |
6664 | Fput (Qscroll_down, Qscroll_command, Qt); | |
6665 | ||
cd3520a4 JB |
6666 | DEFSYM (Qwindow_configuration_change_hook, "window-configuration-change-hook"); |
6667 | DEFSYM (Qwindowp, "windowp"); | |
6668 | DEFSYM (Qwindow_configuration_p, "window-configuration-p"); | |
6669 | DEFSYM (Qwindow_live_p, "window-live-p"); | |
52162052 | 6670 | DEFSYM (Qwindow_valid_p, "window-valid-p"); |
cd3520a4 JB |
6671 | DEFSYM (Qwindow_deletable_p, "window-deletable-p"); |
6672 | DEFSYM (Qdelete_window, "delete-window"); | |
5386012d MR |
6673 | DEFSYM (Qwindow_resize_root_window, "window--resize-root-window"); |
6674 | DEFSYM (Qwindow_resize_root_window_vertically, "window--resize-root-window-vertically"); | |
cd3520a4 JB |
6675 | DEFSYM (Qsafe, "safe"); |
6676 | DEFSYM (Qdisplay_buffer, "display-buffer"); | |
6677 | DEFSYM (Qreplace_buffer_in_windows, "replace-buffer-in-windows"); | |
6678 | DEFSYM (Qrecord_window_buffer, "record-window-buffer"); | |
6679 | DEFSYM (Qget_mru_window, "get-mru-window"); | |
5938d519 | 6680 | DEFSYM (Qwindow_size, "window-size"); |
cd3520a4 JB |
6681 | DEFSYM (Qtemp_buffer_show_hook, "temp-buffer-show-hook"); |
6682 | DEFSYM (Qabove, "above"); | |
6683 | DEFSYM (Qbelow, "below"); | |
6a6ee00d | 6684 | DEFSYM (Qclone_of, "clone-of"); |
b9e809c2 | 6685 | |
67492200 | 6686 | staticpro (&Vwindow_list); |
8bfb170b KS |
6687 | |
6688 | minibuf_selected_window = Qnil; | |
3dbab091 | 6689 | staticpro (&minibuf_selected_window); |
67492200 | 6690 | |
c876b227 | 6691 | window_scroll_pixel_based_preserve_x = -1; |
66fe93d1 | 6692 | window_scroll_pixel_based_preserve_y = -1; |
c876b227 SM |
6693 | window_scroll_preserve_hpos = -1; |
6694 | window_scroll_preserve_vpos = -1; | |
66d43aea | 6695 | |
29208e82 | 6696 | DEFVAR_LISP ("temp-buffer-show-function", Vtemp_buffer_show_function, |
fdb82f93 PJ |
6697 | doc: /* Non-nil means call as function to display a help buffer. |
6698 | The function is called with one argument, the buffer to be displayed. | |
6699 | Used by `with-output-to-temp-buffer'. | |
6700 | If this function is used, then it must do the entire job of showing | |
6701 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 | 6702 | Vtemp_buffer_show_function = Qnil; |
e10ac9f1 | 6703 | |
29208e82 | 6704 | DEFVAR_LISP ("minibuffer-scroll-window", Vminibuf_scroll_window, |
fdb82f93 | 6705 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
6706 | Vminibuf_scroll_window = Qnil; |
6707 | ||
29208e82 | 6708 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", mode_line_in_non_selected_windows, |
26124d5e | 6709 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
6710 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
6711 | is displayed in the `mode-line' face. */); | |
6712 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 6713 | |
29208e82 | 6714 | DEFVAR_LISP ("other-window-scroll-buffer", Vother_window_scroll_buffer, |
fdb82f93 | 6715 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
6716 | Vother_window_scroll_buffer = Qnil; |
6717 | ||
29208e82 | 6718 | DEFVAR_BOOL ("auto-window-vscroll", auto_window_vscroll_p, |
e10ac9f1 | 6719 | doc: /* Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); |
e56263e5 KS |
6720 | auto_window_vscroll_p = 1; |
6721 | ||
29208e82 | 6722 | DEFVAR_INT ("next-screen-context-lines", next_screen_context_lines, |
e10ac9f1 | 6723 | doc: /* Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
6724 | next_screen_context_lines = 2; |
6725 | ||
5500c422 | 6726 | DEFVAR_LISP ("scroll-preserve-screen-position", |
29208e82 | 6727 | Vscroll_preserve_screen_position, |
e10ac9f1 | 6728 | doc: /* Controls if scroll commands move point to keep its screen position unchanged. |
bdf4ec93 RS |
6729 | A value of nil means point does not keep its screen position except |
6730 | at the scroll margin or window boundary respectively. | |
6731 | A value of t means point keeps its screen position if the scroll | |
6732 | command moved it vertically out of the window, e.g. when scrolling | |
6733 | by full screens. | |
9013a7f8 | 6734 | Any other value means point always keeps its screen position. |
a4b000fb JL |
6735 | Scroll commands should have the `scroll-command' property |
6736 | on their symbols to be controlled by this variable. */); | |
5500c422 | 6737 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 6738 | |
29208e82 | 6739 | DEFVAR_LISP ("window-point-insertion-type", Vwindow_point_insertion_type, |
a1562258 SM |
6740 | doc: /* Type of marker to use for `window-point'. */); |
6741 | Vwindow_point_insertion_type = Qnil; | |
6742 | ||
543f5fb1 | 6743 | DEFVAR_LISP ("window-configuration-change-hook", |
29208e82 | 6744 | Vwindow_configuration_change_hook, |
fdb82f93 | 6745 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
6746 | The buffer-local part is run once per window, with the relevant window |
6747 | selected; while the global part is run only once for the modified frame, | |
6748 | with the relevant frame selected. */); | |
543f5fb1 RS |
6749 | Vwindow_configuration_change_hook = Qnil; |
6750 | ||
29208e82 | 6751 | DEFVAR_LISP ("recenter-redisplay", Vrecenter_redisplay, |
61d4b438 MR |
6752 | doc: /* Non-nil means `recenter' redraws entire frame. |
6753 | If this option is non-nil, then the `recenter' command with a nil | |
6754 | argument will redraw the entire frame; the special value `tty' causes | |
6755 | the frame to be redrawn only if it is a tty frame. */); | |
666e158e MB |
6756 | Vrecenter_redisplay = Qtty; |
6757 | ||
a0c2d0ae | 6758 | DEFVAR_LISP ("window-combination-resize", Vwindow_combination_resize, |
454592a6 | 6759 | doc: /* If t, resize window combinations proportionally. |
1a13852e | 6760 | If this variable is nil, splitting a window gets the entire screen space |
a0c2d0ae | 6761 | for displaying the new window from the window to split. Deleting and |
df85d315 | 6762 | resizing a window preferably resizes one adjacent window only. |
a0c2d0ae | 6763 | |
454592a6 | 6764 | If this variable is t, splitting a window tries to get the space |
a0c2d0ae MR |
6765 | proportionally from all windows in the same combination. This also |
6766 | allows to split a window that is otherwise too small or of fixed size. | |
6767 | Resizing and deleting a window proportionally resize all windows in the | |
6768 | same combination. | |
1a13852e | 6769 | |
454592a6 MR |
6770 | Other values are reserved for future use. |
6771 | ||
9fc9a531 AH |
6772 | This variable takes no effect if the variable `window-combination-limit' is |
6773 | non-nil. */); | |
a0c2d0ae | 6774 | Vwindow_combination_resize = Qnil; |
1a13852e | 6775 | |
b6f67890 | 6776 | DEFVAR_LISP ("window-combination-limit", Vwindow_combination_limit, |
8e17c9ba MR |
6777 | doc: /* If non-nil, splitting a window makes a new parent window. |
6778 | The following values are recognized: | |
1a13852e | 6779 | |
8e17c9ba | 6780 | nil means splitting a window will create a new parent window only if the |
5938d519 MR |
6781 | window has no parent window or the window shall become part of a |
6782 | combination orthogonal to the one it is part of. | |
1a13852e | 6783 | |
5938d519 MR |
6784 | `window-size' means that splitting a window for displaying a buffer |
6785 | makes a new parent window provided `display-buffer' is supposed to | |
6786 | explicitly set the window's size due to the presence of a | |
6787 | `window-height' or `window-width' entry in the alist used by | |
6788 | `display-buffer'. Otherwise, this value is handled like nil. | |
8e17c9ba MR |
6789 | |
6790 | `temp-buffer' means that splitting a window for displaying a temporary | |
6791 | buffer always makes a new parent window. Otherwise, this value is | |
6792 | handled like nil. | |
6793 | ||
8e17c9ba MR |
6794 | `display-buffer' means that splitting a window for displaying a buffer |
6795 | always makes a new parent window. Since temporary buffers are | |
6796 | displayed by the function `display-buffer', this value is stronger | |
6797 | than `temp-buffer'. Splitting a window for other purpose makes a | |
6798 | new parent window only if needed. | |
6799 | ||
6800 | t means that splitting a window always creates a new parent window. If | |
6801 | all splits behave this way, each frame's window tree is a binary | |
6802 | tree and every window but the frame's root window has exactly one | |
6803 | sibling. | |
1a13852e | 6804 | |
8e17c9ba | 6805 | Other values are reserved for future use. */); |
5938d519 | 6806 | Vwindow_combination_limit = Qwindow_size; |
666e158e | 6807 | |
6a6ee00d MR |
6808 | DEFVAR_LISP ("window-persistent-parameters", Vwindow_persistent_parameters, |
6809 | doc: /* Alist of persistent window parameters. | |
34a02f46 MR |
6810 | This alist specifies which window parameters shall get saved by |
6811 | `current-window-configuration' and `window-state-get' and subsequently | |
6812 | restored to their previous values by `set-window-configuration' and | |
6813 | `window-state-put'. | |
6a6ee00d MR |
6814 | |
6815 | The car of each entry of this alist is the symbol specifying the | |
6816 | parameter. The cdr is one of the following: | |
6817 | ||
34a02f46 MR |
6818 | nil means the parameter is neither saved by `window-state-get' nor by |
6819 | `current-window-configuration'. | |
6a6ee00d | 6820 | |
34a02f46 MR |
6821 | t means the parameter is saved by `current-window-configuration' and, |
6822 | provided its WRITABLE argument is nil, by `window-state-get'. | |
6a6ee00d | 6823 | |
34a02f46 MR |
6824 | The symbol `writable' means the parameter is saved unconditionally by |
6825 | both `current-window-configuration' and `window-state-get'. Do not use | |
6826 | this value for parameters without read syntax (like windows or frames). | |
6a6ee00d MR |
6827 | |
6828 | Parameters not saved by `current-window-configuration' or | |
6829 | `window-state-get' are left alone by `set-window-configuration' | |
6830 | respectively are not installed by `window-state-put'. */); | |
34a02f46 | 6831 | Vwindow_persistent_parameters = list1 (Fcons (Qclone_of, Qt)); |
6a6ee00d | 6832 | |
7ab12479 JB |
6833 | defsubr (&Sselected_window); |
6834 | defsubr (&Sminibuffer_window); | |
6835 | defsubr (&Swindow_minibuffer_p); | |
6836 | defsubr (&Swindowp); | |
52162052 | 6837 | defsubr (&Swindow_valid_p); |
806b4d9b | 6838 | defsubr (&Swindow_live_p); |
727e958e MR |
6839 | defsubr (&Swindow_frame); |
6840 | defsubr (&Sframe_root_window); | |
6841 | defsubr (&Sframe_first_window); | |
6842 | defsubr (&Sframe_selected_window); | |
6843 | defsubr (&Sset_frame_selected_window); | |
7ab12479 | 6844 | defsubr (&Spos_visible_in_window_p); |
536833ab | 6845 | defsubr (&Swindow_line_height); |
7ab12479 | 6846 | defsubr (&Swindow_buffer); |
bf60a96b | 6847 | defsubr (&Swindow_parent); |
d68443dc MR |
6848 | defsubr (&Swindow_top_child); |
6849 | defsubr (&Swindow_left_child); | |
6850 | defsubr (&Swindow_next_sibling); | |
6851 | defsubr (&Swindow_prev_sibling); | |
b6f67890 MR |
6852 | defsubr (&Swindow_combination_limit); |
6853 | defsubr (&Sset_window_combination_limit); | |
abde8f8c MR |
6854 | defsubr (&Swindow_use_time); |
6855 | defsubr (&Swindow_top_line); | |
6856 | defsubr (&Swindow_left_column); | |
105216ed CY |
6857 | defsubr (&Swindow_total_height); |
6858 | defsubr (&Swindow_total_width); | |
496e208e MR |
6859 | defsubr (&Swindow_normal_size); |
6860 | defsubr (&Swindow_new_total); | |
6861 | defsubr (&Swindow_new_normal); | |
6862 | defsubr (&Sset_window_new_total); | |
6863 | defsubr (&Sset_window_new_normal); | |
d615d6d2 | 6864 | defsubr (&Swindow_resize_apply); |
105216ed CY |
6865 | defsubr (&Swindow_body_height); |
6866 | defsubr (&Swindow_body_width); | |
7ab12479 JB |
6867 | defsubr (&Swindow_hscroll); |
6868 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
6869 | defsubr (&Swindow_redisplay_end_trigger); |
6870 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 6871 | defsubr (&Swindow_edges); |
c99a9eb3 | 6872 | defsubr (&Swindow_pixel_edges); |
9d5405ec | 6873 | defsubr (&Swindow_absolute_pixel_edges); |
c99a9eb3 RS |
6874 | defsubr (&Swindow_inside_edges); |
6875 | defsubr (&Swindow_inside_pixel_edges); | |
9d5405ec | 6876 | defsubr (&Swindow_inside_absolute_pixel_edges); |
d5783c40 JB |
6877 | defsubr (&Scoordinates_in_window_p); |
6878 | defsubr (&Swindow_at); | |
7ab12479 JB |
6879 | defsubr (&Swindow_point); |
6880 | defsubr (&Swindow_start); | |
6881 | defsubr (&Swindow_end); | |
6882 | defsubr (&Sset_window_point); | |
6883 | defsubr (&Sset_window_start); | |
6884 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 6885 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
6886 | defsubr (&Swindow_display_table); |
6887 | defsubr (&Sset_window_display_table); | |
6888 | defsubr (&Snext_window); | |
6889 | defsubr (&Sprevious_window); | |
7ab12479 | 6890 | defsubr (&Sget_buffer_window); |
1a13852e MR |
6891 | defsubr (&Sdelete_other_windows_internal); |
6892 | defsubr (&Sdelete_window_internal); | |
6893 | defsubr (&Sresize_mini_window_internal); | |
7ab12479 | 6894 | defsubr (&Sset_window_buffer); |
1a13852e | 6895 | defsubr (&Srun_window_configuration_change_hook); |
7ab12479 | 6896 | defsubr (&Sselect_window); |
6b61353c | 6897 | defsubr (&Sforce_window_update); |
1a13852e | 6898 | defsubr (&Ssplit_window_internal); |
7ab12479 JB |
6899 | defsubr (&Sscroll_up); |
6900 | defsubr (&Sscroll_down); | |
6901 | defsubr (&Sscroll_left); | |
6902 | defsubr (&Sscroll_right); | |
ccd0664b | 6903 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 6904 | defsubr (&Sscroll_other_window); |
fa832261 | 6905 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 6906 | defsubr (&Srecenter); |
81fe0836 | 6907 | defsubr (&Swindow_text_height); |
7ab12479 JB |
6908 | defsubr (&Smove_to_window_line); |
6909 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 6910 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
6911 | defsubr (&Sset_window_configuration); |
6912 | defsubr (&Scurrent_window_configuration); | |
5500c422 GM |
6913 | defsubr (&Sset_window_margins); |
6914 | defsubr (&Swindow_margins); | |
949cf20f KS |
6915 | defsubr (&Sset_window_fringes); |
6916 | defsubr (&Swindow_fringes); | |
6917 | defsubr (&Sset_window_scroll_bars); | |
6918 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
6919 | defsubr (&Swindow_vscroll); |
6920 | defsubr (&Sset_window_vscroll); | |
2f8274be | 6921 | defsubr (&Scompare_window_configurations); |
67492200 | 6922 | defsubr (&Swindow_list); |
abde8f8c | 6923 | defsubr (&Swindow_list_1); |
496e208e MR |
6924 | defsubr (&Swindow_prev_buffers); |
6925 | defsubr (&Sset_window_prev_buffers); | |
6926 | defsubr (&Swindow_next_buffers); | |
6927 | defsubr (&Sset_window_next_buffers); | |
cfbb2395 JB |
6928 | defsubr (&Swindow_parameters); |
6929 | defsubr (&Swindow_parameter); | |
6930 | defsubr (&Sset_window_parameter); | |
7ab12479 JB |
6931 | } |
6932 | ||
dfcf069d | 6933 | void |
971de7fb | 6934 | keys_of_window (void) |
7ab12479 | 6935 | { |
7ab12479 JB |
6936 | initial_define_key (control_x_map, '<', "scroll-left"); |
6937 | initial_define_key (control_x_map, '>', "scroll-right"); | |
6938 | ||
32129746 | 6939 | initial_define_key (global_map, Ctl ('V'), "scroll-up-command"); |
7ab12479 | 6940 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); |
32129746 | 6941 | initial_define_key (meta_map, 'v', "scroll-down-command"); |
7ab12479 | 6942 | } |