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; | |
84575e67 PE |
58 | static Lisp_Object Qwindow_configuration_p; |
59 | static Lisp_Object Qrecord_window_buffer; | |
9397e56f | 60 | static Lisp_Object Qwindow_deletable_p, Qdelete_window, Qdisplay_buffer; |
b9e809c2 | 61 | static Lisp_Object Qreplace_buffer_in_windows, Qget_mru_window; |
5386012d | 62 | static Lisp_Object Qwindow_resize_root_window, Qwindow_resize_root_window_vertically; |
955cbe7b | 63 | static Lisp_Object Qscroll_up, Qscroll_down, Qscroll_command; |
5938d519 | 64 | static Lisp_Object Qsafe, Qabove, Qbelow, Qwindow_size, Qclone_of; |
b9e809c2 | 65 | |
f57e2426 | 66 | static int displayed_window_lines (struct window *); |
f57e2426 J |
67 | static int count_windows (struct window *); |
68 | static int get_leaf_windows (struct window *, struct window **, int); | |
56b5d5b1 DA |
69 | static void window_scroll (Lisp_Object, EMACS_INT, bool, int); |
70 | static void window_scroll_pixel_based (Lisp_Object, int, bool, int); | |
71 | static void window_scroll_line_based (Lisp_Object, int, bool, int); | |
f57e2426 | 72 | static int freeze_window_start (struct window *, void *); |
f57e2426 J |
73 | static Lisp_Object window_list (void); |
74 | static int add_window_to_list (struct window *, void *); | |
f57e2426 J |
75 | static Lisp_Object next_window (Lisp_Object, Lisp_Object, |
76 | Lisp_Object, int); | |
77 | static void decode_next_window_args (Lisp_Object *, Lisp_Object *, | |
78 | Lisp_Object *); | |
2f7c71a1 | 79 | static void foreach_window (struct frame *, |
f95464e4 | 80 | int (* fn) (struct window *, void *), |
2f7c71a1 | 81 | void *); |
f57e2426 J |
82 | static int foreach_window_1 (struct window *, |
83 | int (* fn) (struct window *, void *), | |
84 | void *); | |
85 | static Lisp_Object window_list_1 (Lisp_Object, Lisp_Object, Lisp_Object); | |
748fa866 DA |
86 | static int window_resize_check (struct window *, bool); |
87 | static void window_resize_apply (struct window *, bool); | |
7c82f3e2 | 88 | static Lisp_Object select_window (Lisp_Object, Lisp_Object, int); |
12384b01 | 89 | static void select_window_1 (Lisp_Object, bool); |
b7354ddf | 90 | |
7ab12479 JB |
91 | /* This is the window in which the terminal's cursor should |
92 | be left when nothing is being done with it. This must | |
93 | always be a leaf window, and its buffer is selected by | |
94 | the top level editing loop at the end of each command. | |
95 | ||
96 | This value is always the same as | |
44fa5b1e | 97 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
98 | Lisp_Object selected_window; |
99 | ||
67492200 GM |
100 | /* A list of all windows for use by next_window and Fwindow_list. |
101 | Functions creating or deleting windows should invalidate this cache | |
102 | by setting it to nil. */ | |
67492200 GM |
103 | Lisp_Object Vwindow_list; |
104 | ||
5500c422 GM |
105 | /* The mini-buffer window of the selected frame. |
106 | Note that you cannot test for mini-bufferness of an arbitrary window | |
107 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 JB |
108 | the selected window. */ |
109 | Lisp_Object minibuf_window; | |
110 | ||
3f49fddc KS |
111 | /* Non-nil means it is the window whose mode line should be |
112 | shown as the selected window when the minibuffer is selected. */ | |
3dbab091 | 113 | Lisp_Object minibuf_selected_window; |
3f49fddc | 114 | |
a58ec57d | 115 | /* Hook run at end of temp_output_buffer_show. */ |
955cbe7b | 116 | static Lisp_Object Qtemp_buffer_show_hook; |
a58ec57d | 117 | |
5b03d3c0 RS |
118 | /* Nonzero after init_window_once has finished. */ |
119 | static int window_initialized; | |
120 | ||
543f5fb1 | 121 | /* Hook to run when window config changes. */ |
eeca6f6f | 122 | static Lisp_Object Qwindow_configuration_change_hook; |
0d384044 | 123 | |
66d43aea | 124 | /* Used by the function window_scroll_pixel_based */ |
c876b227 | 125 | static int window_scroll_pixel_based_preserve_x; |
66fe93d1 | 126 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 127 | |
c876b227 | 128 | /* Same for window_scroll_line_based. */ |
d311d28c PE |
129 | static EMACS_INT window_scroll_preserve_hpos; |
130 | static EMACS_INT window_scroll_preserve_vpos; | |
f230ecc9 | 131 | \f |
84575e67 PE |
132 | static void |
133 | CHECK_WINDOW_CONFIGURATION (Lisp_Object x) | |
134 | { | |
135 | CHECK_TYPE (WINDOW_CONFIGURATIONP (x), Qwindow_configuration_p, x); | |
136 | } | |
137 | ||
e8c17b81 | 138 | /* These setters are used only in this file, so they can be private. */ |
b0ab8123 | 139 | static void |
e8c17b81 PE |
140 | wset_combination_limit (struct window *w, Lisp_Object val) |
141 | { | |
142 | w->combination_limit = val; | |
143 | } | |
b0ab8123 | 144 | static void |
e8c17b81 PE |
145 | wset_dedicated (struct window *w, Lisp_Object val) |
146 | { | |
147 | w->dedicated = val; | |
148 | } | |
b0ab8123 | 149 | static void |
e8c17b81 PE |
150 | wset_display_table (struct window *w, Lisp_Object val) |
151 | { | |
152 | w->display_table = 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_vertical_scroll_bar_type (struct window *w, Lisp_Object val) |
221 | { | |
222 | w->vertical_scroll_bar_type = val; | |
223 | } | |
b0ab8123 | 224 | static void |
e8c17b81 PE |
225 | wset_window_parameters (struct window *w, Lisp_Object val) |
226 | { | |
227 | w->window_parameters = val; | |
228 | } | |
e74aeda8 DA |
229 | static void |
230 | wset_combination (struct window *w, bool horflag, Lisp_Object val) | |
231 | { | |
232 | /* Since leaf windows never becomes non-leaf, there should | |
233 | be no buffer and markers in start and pointm fields of W. */ | |
234 | eassert (!BUFFERP (w->contents) && NILP (w->start) && NILP (w->pointm)); | |
235 | w->contents = val; | |
236 | /* When an internal window is deleted and VAL is nil, HORFLAG | |
237 | is meaningless. */ | |
238 | if (!NILP (val)) | |
239 | w->horizontal = horflag; | |
240 | } | |
e8c17b81 | 241 | |
170da1ec DA |
242 | /* Nonzero if leaf window W doesn't reflect the actual state |
243 | of displayed buffer due to its text or overlays change. */ | |
244 | ||
245 | bool | |
246 | window_outdated (struct window *w) | |
247 | { | |
248 | struct buffer *b = XBUFFER (w->contents); | |
249 | return (w->last_modified < BUF_MODIFF (b) | |
250 | || w->last_overlay_modified < BUF_OVERLAY_MODIFF (b)); | |
251 | } | |
252 | ||
52162052 MR |
253 | struct window * |
254 | decode_live_window (register Lisp_Object window) | |
f230ecc9 MR |
255 | { |
256 | if (NILP (window)) | |
257 | return XWINDOW (selected_window); | |
c876b227 | 258 | |
f230ecc9 MR |
259 | CHECK_LIVE_WINDOW (window); |
260 | return XWINDOW (window); | |
261 | } | |
262 | ||
b9e9df47 | 263 | struct window * |
f230ecc9 MR |
264 | decode_any_window (register Lisp_Object window) |
265 | { | |
6e5d1c12 CY |
266 | struct window *w; |
267 | ||
f230ecc9 MR |
268 | if (NILP (window)) |
269 | return XWINDOW (selected_window); | |
270 | ||
271 | CHECK_WINDOW (window); | |
6e5d1c12 | 272 | w = XWINDOW (window); |
6e5d1c12 | 273 | return w; |
f230ecc9 | 274 | } |
666e158e | 275 | |
b52d6985 | 276 | static struct window * |
52162052 MR |
277 | decode_valid_window (register Lisp_Object window) |
278 | { | |
279 | struct window *w; | |
280 | ||
281 | if (NILP (window)) | |
282 | return XWINDOW (selected_window); | |
283 | ||
284 | CHECK_VALID_WINDOW (window); | |
285 | w = XWINDOW (window); | |
286 | return w; | |
287 | } | |
288 | ||
98a07056 DA |
289 | /* Called when W's buffer slot is changed. ARG -1 means that W is about to |
290 | cease its buffer, and 1 means that W is about to set up the new one. */ | |
291 | ||
292 | static void | |
293 | adjust_window_count (struct window *w, int arg) | |
294 | { | |
295 | eassert (eabs (arg) == 1); | |
e74aeda8 | 296 | if (BUFFERP (w->contents)) |
98a07056 | 297 | { |
e74aeda8 | 298 | struct buffer *b = XBUFFER (w->contents); |
3f781c75 | 299 | |
98a07056 DA |
300 | if (b->base_buffer) |
301 | b = b->base_buffer; | |
302 | b->window_count += arg; | |
303 | eassert (b->window_count >= 0); | |
422ff52b | 304 | /* These should be recalculated by redisplay code. */ |
9d93ce29 | 305 | w->window_end_valid = 0; |
422ff52b | 306 | w->base_line_pos = 0; |
98a07056 DA |
307 | } |
308 | } | |
309 | ||
310 | /* Set W's buffer slot to VAL and recompute number | |
311 | of windows showing VAL if it is a buffer. */ | |
312 | ||
313 | void | |
314 | wset_buffer (struct window *w, Lisp_Object val) | |
315 | { | |
316 | adjust_window_count (w, -1); | |
e74aeda8 DA |
317 | if (BUFFERP (val)) |
318 | /* Make sure that we do not assign the buffer | |
319 | to an internal window. */ | |
320 | eassert (MARKERP (w->start) && MARKERP (w->pointm)); | |
321 | w->contents = val; | |
98a07056 DA |
322 | adjust_window_count (w, 1); |
323 | } | |
324 | ||
7ab12479 | 325 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, |
f230ecc9 | 326 | doc: /* Return t if OBJECT is a window and nil otherwise. */) |
5842a27b | 327 | (Lisp_Object object) |
7ab12479 | 328 | { |
413430c5 | 329 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
330 | } |
331 | ||
52162052 MR |
332 | DEFUN ("window-valid-p", Fwindow_valid_p, Swindow_valid_p, 1, 1, 0, |
333 | doc: /* Return t if OBJECT is a valid window and nil otherwise. | |
334 | A valid window is either a window that displays a buffer or an internal | |
335 | window. Deleted windows are not live. */) | |
336 | (Lisp_Object object) | |
337 | { | |
338 | return WINDOW_VALID_P (object) ? Qt : Qnil; | |
339 | } | |
340 | ||
806b4d9b | 341 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
f230ecc9 | 342 | doc: /* Return t if OBJECT is a live window and nil otherwise. |
49745b39 CY |
343 | A live window is a window that displays a buffer. |
344 | Internal windows and deleted windows are not live. */) | |
5842a27b | 345 | (Lisp_Object object) |
605be8af | 346 | { |
9e571f49 | 347 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af | 348 | } |
727e958e MR |
349 | \f |
350 | /* Frames and windows. */ | |
89bc0592 | 351 | DEFUN ("window-frame", Fwindow_frame, Swindow_frame, 0, 1, 0, |
727e958e | 352 | doc: /* Return the frame that window WINDOW is on. |
52162052 | 353 | WINDOW must be a valid window and defaults to the selected one. */) |
727e958e MR |
354 | (Lisp_Object window) |
355 | { | |
52162052 | 356 | return decode_valid_window (window)->frame; |
727e958e MR |
357 | } |
358 | ||
359 | DEFUN ("frame-root-window", Fframe_root_window, Sframe_root_window, 0, 1, 0, | |
87e68db4 JB |
360 | doc: /* Return the root window of FRAME-OR-WINDOW. |
361 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
49745b39 CY |
362 | With a frame argument, return that frame's root window. |
363 | With a window argument, return the root window of that window's frame. */) | |
727e958e MR |
364 | (Lisp_Object frame_or_window) |
365 | { | |
366 | Lisp_Object window; | |
367 | ||
368 | if (NILP (frame_or_window)) | |
e69b0960 | 369 | window = SELECTED_FRAME ()->root_window; |
52162052 MR |
370 | else if (WINDOW_VALID_P (frame_or_window)) |
371 | window = XFRAME (XWINDOW (frame_or_window)->frame)->root_window; | |
727e958e MR |
372 | else |
373 | { | |
374 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 375 | window = XFRAME (frame_or_window)->root_window; |
727e958e MR |
376 | } |
377 | ||
378 | return window; | |
379 | } | |
380 | ||
381 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, | |
49745b39 CY |
382 | doc: /* Return the minibuffer window for frame FRAME. |
383 | If FRAME is omitted or nil, it defaults to the selected frame. */) | |
727e958e MR |
384 | (Lisp_Object frame) |
385 | { | |
d9f07150 | 386 | return FRAME_MINIBUF_WINDOW (decode_live_frame (frame)); |
727e958e MR |
387 | } |
388 | ||
389 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, | |
390 | Swindow_minibuffer_p, 0, 1, 0, | |
391 | doc: /* Return non-nil if WINDOW is a minibuffer window. | |
52162052 | 392 | WINDOW must be a valid window and defaults to the selected one. */) |
727e958e MR |
393 | (Lisp_Object window) |
394 | { | |
52162052 | 395 | return MINI_WINDOW_P (decode_valid_window (window)) ? Qt : Qnil; |
727e958e MR |
396 | } |
397 | ||
398 | /* Don't move this to window.el - this must be a safe routine. */ | |
399 | DEFUN ("frame-first-window", Fframe_first_window, Sframe_first_window, 0, 1, 0, | |
87e68db4 JB |
400 | doc: /* Return the topmost, leftmost live window on FRAME-OR-WINDOW. |
401 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
52162052 MR |
402 | Else if FRAME-OR-WINDOW denotes a valid window, return the first window |
403 | of that window's frame. If FRAME-OR-WINDOW denotes a live frame, return | |
727e958e MR |
404 | the first window of that frame. */) |
405 | (Lisp_Object frame_or_window) | |
406 | { | |
407 | Lisp_Object window; | |
408 | ||
409 | if (NILP (frame_or_window)) | |
e69b0960 | 410 | window = SELECTED_FRAME ()->root_window; |
52162052 | 411 | else if (WINDOW_VALID_P (frame_or_window)) |
e69b0960 | 412 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window; |
727e958e MR |
413 | else |
414 | { | |
415 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 416 | window = XFRAME (frame_or_window)->root_window; |
727e958e MR |
417 | } |
418 | ||
e74aeda8 DA |
419 | while (WINDOWP (XWINDOW (window)->contents)) |
420 | window = XWINDOW (window)->contents; | |
727e958e MR |
421 | |
422 | return window; | |
423 | } | |
424 | ||
425 | DEFUN ("frame-selected-window", Fframe_selected_window, | |
426 | Sframe_selected_window, 0, 1, 0, | |
87e68db4 JB |
427 | doc: /* Return the selected window of FRAME-OR-WINDOW. |
428 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
52162052 MR |
429 | Else if FRAME-OR-WINDOW denotes a valid window, return the selected |
430 | window of that window's frame. If FRAME-OR-WINDOW denotes a live frame, | |
431 | return the selected window of that frame. */) | |
727e958e MR |
432 | (Lisp_Object frame_or_window) |
433 | { | |
434 | Lisp_Object window; | |
435 | ||
436 | if (NILP (frame_or_window)) | |
e69b0960 | 437 | window = SELECTED_FRAME ()->selected_window; |
52162052 | 438 | else if (WINDOW_VALID_P (frame_or_window)) |
e69b0960 | 439 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->selected_window; |
727e958e MR |
440 | else |
441 | { | |
442 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 443 | window = XFRAME (frame_or_window)->selected_window; |
727e958e MR |
444 | } |
445 | ||
446 | return window; | |
447 | } | |
448 | ||
449 | DEFUN ("set-frame-selected-window", Fset_frame_selected_window, | |
450 | Sset_frame_selected_window, 2, 3, 0, | |
451 | doc: /* Set selected window of FRAME to WINDOW. | |
452 | FRAME must be a live frame and defaults to the selected one. If FRAME | |
453 | is the selected frame, this makes WINDOW the selected window. Optional | |
454 | argument NORECORD non-nil means to neither change the order of recently | |
455 | selected windows nor the buffer list. WINDOW must denote a live window. | |
456 | Return WINDOW. */) | |
457 | (Lisp_Object frame, Lisp_Object window, Lisp_Object norecord) | |
458 | { | |
459 | if (NILP (frame)) | |
460 | frame = selected_frame; | |
461 | ||
462 | CHECK_LIVE_FRAME (frame); | |
463 | CHECK_LIVE_WINDOW (window); | |
464 | ||
465 | if (! EQ (frame, WINDOW_FRAME (XWINDOW (window)))) | |
466 | error ("In `set-frame-selected-window', WINDOW is not on FRAME"); | |
467 | ||
468 | if (EQ (frame, selected_frame)) | |
469 | return Fselect_window (window, norecord); | |
470 | else | |
f00af5b1 PE |
471 | { |
472 | fset_selected_window (XFRAME (frame), window); | |
473 | return window; | |
474 | } | |
727e958e MR |
475 | } |
476 | ||
477 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
478 | doc: /* Return the selected window. | |
479 | The selected window is the window in which the standard cursor for | |
480 | selected windows appears and to which many commands apply. */) | |
481 | (void) | |
482 | { | |
483 | return selected_window; | |
484 | } | |
485 | ||
9397e56f MR |
486 | int window_select_count; |
487 | ||
727e958e MR |
488 | /* If select_window is called with inhibit_point_swap non-zero it will |
489 | not store point of the old selected window's buffer back into that | |
490 | window's pointm slot. This is needed by Fset_window_configuration to | |
491 | avoid that the display routine is called with selected_window set to | |
492 | Qnil causing a subsequent crash. */ | |
493 | static Lisp_Object | |
494 | select_window (Lisp_Object window, Lisp_Object norecord, int inhibit_point_swap) | |
495 | { | |
496 | register struct window *w; | |
727e958e MR |
497 | struct frame *sf; |
498 | ||
499 | CHECK_LIVE_WINDOW (window); | |
500 | ||
501 | w = XWINDOW (window); | |
502 | w->frozen_window_start_p = 0; | |
503 | ||
734fbd86 | 504 | /* Make the selected window's buffer current. */ |
e74aeda8 | 505 | Fset_buffer (w->contents); |
734fbd86 | 506 | |
727e958e | 507 | if (EQ (window, selected_window) && !inhibit_point_swap) |
562c6ee9 SM |
508 | /* `switch-to-buffer' uses (select-window (selected-window)) as a "clever" |
509 | way to call record_buffer from Elisp, so it's important that we call | |
510 | record_buffer before returning here. */ | |
511 | goto record_and_return; | |
727e958e MR |
512 | |
513 | sf = SELECTED_FRAME (); | |
514 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
515 | { | |
f00af5b1 | 516 | fset_selected_window (XFRAME (WINDOW_FRAME (w)), window); |
727e958e MR |
517 | /* Use this rather than Fhandle_switch_frame |
518 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
519 | move around in the state where a minibuffer in a separate | |
520 | frame is active. */ | |
521 | Fselect_frame (WINDOW_FRAME (w), norecord); | |
522 | /* Fselect_frame called us back so we've done all the work already. */ | |
523 | eassert (EQ (window, selected_window)); | |
524 | return window; | |
525 | } | |
526 | else | |
f00af5b1 | 527 | fset_selected_window (sf, window); |
727e958e | 528 | |
1e101a4b | 529 | select_window_1 (window, inhibit_point_swap); |
562c6ee9 SM |
530 | bset_last_selected_window (XBUFFER (w->contents), window); |
531 | windows_or_buffers_changed++; | |
1e101a4b | 532 | |
562c6ee9 | 533 | record_and_return: |
7ffe7ef6 SM |
534 | /* record_buffer can run QUIT, so make sure it is run only after we have |
535 | re-established the invariant between selected_window and selected_frame, | |
536 | otherwise the temporary broken invariant might "escape" (bug#14161). */ | |
537 | if (NILP (norecord)) | |
538 | { | |
539 | w->use_time = ++window_select_count; | |
540 | record_buffer (w->contents); | |
541 | } | |
542 | ||
1e101a4b SM |
543 | return window; |
544 | } | |
545 | ||
546 | /* Select window with a minimum of fuss, i.e. don't record the change anywhere | |
3f781c75 | 547 | (not even for redisplay's benefit), and assume that the window's frame is |
1e101a4b | 548 | already selected. */ |
12384b01 | 549 | static void |
1e101a4b SM |
550 | select_window_1 (Lisp_Object window, bool inhibit_point_swap) |
551 | { | |
734fbd86 MR |
552 | /* Store the old selected window's buffer's point in pointm of the old |
553 | selected window. It belongs to that window, and when the window is | |
554 | not selected, must be in the window. */ | |
727e958e MR |
555 | if (!inhibit_point_swap) |
556 | { | |
1e101a4b | 557 | struct window *ow = XWINDOW (selected_window); |
e74aeda8 DA |
558 | if (BUFFERP (ow->contents)) |
559 | set_marker_both (ow->pointm, ow->contents, | |
560 | BUF_PT (XBUFFER (ow->contents)), | |
561 | BUF_PT_BYTE (XBUFFER (ow->contents))); | |
727e958e MR |
562 | } |
563 | ||
564 | selected_window = window; | |
727e958e MR |
565 | |
566 | /* Go to the point recorded in the window. | |
567 | This is important when the buffer is in more | |
568 | than one window. It also matters when | |
569 | redisplay_window has altered point after scrolling, | |
570 | because it makes the change only in the window. */ | |
571 | { | |
1e101a4b | 572 | register ptrdiff_t new_point = marker_position (XWINDOW (window)->pointm); |
727e958e MR |
573 | if (new_point < BEGV) |
574 | SET_PT (BEGV); | |
575 | else if (new_point > ZV) | |
576 | SET_PT (ZV); | |
577 | else | |
578 | SET_PT (new_point); | |
579 | } | |
727e958e MR |
580 | } |
581 | ||
582 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, | |
94900bfe MR |
583 | doc: /* Select WINDOW which must be a live window. |
584 | Also make WINDOW's frame the selected frame and WINDOW that frame's | |
585 | selected window. In addition, make WINDOW's buffer current and set that | |
586 | buffer's value of `point' to the value of WINDOW's `window-point'. | |
587 | Return WINDOW. | |
727e958e MR |
588 | |
589 | Optional second arg NORECORD non-nil means do not put this buffer at the | |
590 | front of the buffer list and do not make this window the most recently | |
591 | selected one. | |
605be8af | 592 | |
727e958e MR |
593 | Note that the main editor command loop sets the current buffer to the |
594 | buffer of the selected window before each command. */) | |
595 | (register Lisp_Object window, Lisp_Object norecord) | |
596 | { | |
597 | return select_window (window, norecord, 0); | |
598 | } | |
599 | \f | |
bf60a96b | 600 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
49745b39 CY |
601 | doc: /* Return the buffer displayed in window WINDOW. |
602 | If WINDOW is omitted or nil, it defaults to the selected window. | |
603 | Return nil for an internal window or a deleted window. */) | |
bf60a96b MR |
604 | (Lisp_Object window) |
605 | { | |
e74aeda8 DA |
606 | struct window *w = decode_any_window (window); |
607 | return WINDOW_LEAF_P (w) ? w->contents : Qnil; | |
bf60a96b MR |
608 | } |
609 | ||
610 | DEFUN ("window-parent", Fwindow_parent, Swindow_parent, 0, 1, 0, | |
49745b39 | 611 | doc: /* Return the parent window of window WINDOW. |
52162052 | 612 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 | 613 | Return nil for a window with no parent (e.g. a root window). */) |
bf60a96b MR |
614 | (Lisp_Object window) |
615 | { | |
52162052 | 616 | return decode_valid_window (window)->parent; |
bf60a96b MR |
617 | } |
618 | ||
89bc0592 | 619 | DEFUN ("window-top-child", Fwindow_top_child, Swindow_top_child, 0, 1, 0, |
49745b39 | 620 | doc: /* Return the topmost child window of window WINDOW. |
52162052 | 621 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 CY |
622 | Return nil if WINDOW is a live window (live windows have no children). |
623 | Return nil if WINDOW is an internal window whose children form a | |
624 | horizontal combination. */) | |
bf60a96b MR |
625 | (Lisp_Object window) |
626 | { | |
e74aeda8 DA |
627 | struct window *w = decode_valid_window (window); |
628 | return WINDOW_VERTICAL_COMBINATION_P (w) ? w->contents : Qnil; | |
bf60a96b MR |
629 | } |
630 | ||
89bc0592 | 631 | DEFUN ("window-left-child", Fwindow_left_child, Swindow_left_child, 0, 1, 0, |
49745b39 | 632 | doc: /* Return the leftmost child window of window WINDOW. |
52162052 | 633 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 CY |
634 | Return nil if WINDOW is a live window (live windows have no children). |
635 | Return nil if WINDOW is an internal window whose children form a | |
636 | vertical combination. */) | |
bf60a96b MR |
637 | (Lisp_Object window) |
638 | { | |
e74aeda8 DA |
639 | struct window *w = decode_valid_window (window); |
640 | return WINDOW_HORIZONTAL_COMBINATION_P (w) ? w->contents : Qnil; | |
bf60a96b MR |
641 | } |
642 | ||
d68443dc | 643 | DEFUN ("window-next-sibling", Fwindow_next_sibling, Swindow_next_sibling, 0, 1, 0, |
49745b39 | 644 | doc: /* Return the next sibling window of window WINDOW. |
52162052 | 645 | WINDOW must be a valid window and defaults to the selected one. |
d68443dc | 646 | Return nil if WINDOW has no next sibling. */) |
bf60a96b MR |
647 | (Lisp_Object window) |
648 | { | |
52162052 | 649 | return decode_valid_window (window)->next; |
bf60a96b MR |
650 | } |
651 | ||
d68443dc | 652 | DEFUN ("window-prev-sibling", Fwindow_prev_sibling, Swindow_prev_sibling, 0, 1, 0, |
49745b39 | 653 | doc: /* Return the previous sibling window of window WINDOW. |
52162052 | 654 | WINDOW must be a valid window and defaults to the selected one. |
d68443dc | 655 | Return nil if WINDOW has no previous sibling. */) |
bf60a96b MR |
656 | (Lisp_Object window) |
657 | { | |
52162052 | 658 | return decode_valid_window (window)->prev; |
bf60a96b | 659 | } |
67492200 | 660 | |
72f94d4b | 661 | DEFUN ("window-combination-limit", Fwindow_combination_limit, Swindow_combination_limit, 1, 1, 0, |
b6f67890 | 662 | doc: /* Return combination limit of window WINDOW. |
095d384d | 663 | WINDOW must be a valid window used in horizontal or vertical combination. |
be7f5545 | 664 | If the return value is nil, child windows of WINDOW can be recombined with |
b6f67890 | 665 | WINDOW's siblings. A return value of t means that child windows of |
095d384d | 666 | WINDOW are never \(re-)combined with WINDOW's siblings. */) |
496e208e | 667 | (Lisp_Object window) |
7ab12479 | 668 | { |
095d384d DA |
669 | struct window *w; |
670 | ||
72f94d4b | 671 | CHECK_VALID_WINDOW (window); |
095d384d | 672 | w = XWINDOW (window); |
e74aeda8 | 673 | if (WINDOW_LEAF_P (w)) |
095d384d | 674 | error ("Combination limit is meaningful for internal windows only"); |
e74aeda8 | 675 | return w->combination_limit; |
7ab12479 | 676 | } |
53bb6b99 | 677 | |
b6f67890 | 678 | DEFUN ("set-window-combination-limit", Fset_window_combination_limit, Sset_window_combination_limit, 2, 2, 0, |
d2999b1a | 679 | doc: /* Set combination limit of window WINDOW to LIMIT; return LIMIT. |
095d384d | 680 | WINDOW must be a valid window used in horizontal or vertical combination. |
8e17c9ba MR |
681 | If LIMIT is nil, child windows of WINDOW can be recombined with WINDOW's |
682 | siblings. LIMIT t means that child windows of WINDOW are never | |
683 | \(re-)combined with WINDOW's siblings. Other values are reserved for | |
095d384d | 684 | future use. */) |
d2999b1a | 685 | (Lisp_Object window, Lisp_Object limit) |
b3a10345 | 686 | { |
095d384d DA |
687 | struct window *w; |
688 | ||
689 | CHECK_VALID_WINDOW (window); | |
690 | w = XWINDOW (window); | |
e74aeda8 | 691 | if (WINDOW_LEAF_P (w)) |
095d384d DA |
692 | error ("Combination limit is meaningful for internal windows only"); |
693 | wset_combination_limit (w, limit); | |
e8c17b81 | 694 | return limit; |
496e208e | 695 | } |
7bbc67d2 | 696 | |
496e208e | 697 | DEFUN ("window-use-time", Fwindow_use_time, Swindow_use_time, 0, 1, 0, |
49745b39 | 698 | doc: /* Return the use time of window WINDOW. |
52162052 | 699 | WINDOW must be a live window and defaults to the selected one. |
49745b39 CY |
700 | The window with the highest use time is the most recently selected |
701 | one. The window with the lowest use time is the least recently | |
702 | selected one. */) | |
496e208e MR |
703 | (Lisp_Object window) |
704 | { | |
52162052 | 705 | return make_number (decode_live_window (window)->use_time); |
496e208e | 706 | } |
abde8f8c | 707 | \f |
105216ed CY |
708 | DEFUN ("window-total-height", Fwindow_total_height, Swindow_total_height, 0, 1, 0, |
709 | doc: /* Return the total height, in lines, of window WINDOW. | |
52162052 | 710 | WINDOW must be a valid window and defaults to the selected one. |
b3a10345 | 711 | |
105216ed CY |
712 | The return value includes the mode line and header line, if any. |
713 | If WINDOW is an internal window, the total height is the height | |
714 | of the screen areas spanned by its children. | |
536833ab | 715 | |
105216ed CY |
716 | On a graphical display, this total height is reported as an |
717 | integer multiple of the default character height. */) | |
718 | (Lisp_Object window) | |
496e208e | 719 | { |
5f24fa51 | 720 | return make_number (decode_valid_window (window)->total_lines); |
105216ed | 721 | } |
536833ab | 722 | |
105216ed CY |
723 | DEFUN ("window-total-width", Fwindow_total_width, Swindow_total_width, 0, 1, 0, |
724 | doc: /* Return the total width, in columns, of window WINDOW. | |
52162052 | 725 | WINDOW must be a valid window and defaults to the selected one. |
b3a10345 | 726 | |
105216ed CY |
727 | The return value includes any vertical dividers or scroll bars |
728 | belonging to WINDOW. If WINDOW is an internal window, the total width | |
729 | is the width of the screen areas spanned by its children. | |
b3a10345 | 730 | |
105216ed CY |
731 | On a graphical display, this total width is reported as an |
732 | integer multiple of the default character width. */) | |
496e208e MR |
733 | (Lisp_Object window) |
734 | { | |
5f24fa51 | 735 | return make_number (decode_valid_window (window)->total_cols); |
abde8f8c | 736 | } |
b3a10345 | 737 | |
496e208e | 738 | DEFUN ("window-new-total", Fwindow_new_total, Swindow_new_total, 0, 1, 0, |
49745b39 | 739 | doc: /* Return the new total size of window WINDOW. |
52162052 | 740 | WINDOW must be a valid window and defaults to the selected one. */) |
496e208e MR |
741 | (Lisp_Object window) |
742 | { | |
52162052 | 743 | return decode_valid_window (window)->new_total; |
496e208e MR |
744 | } |
745 | ||
746 | DEFUN ("window-normal-size", Fwindow_normal_size, Swindow_normal_size, 0, 2, 0, | |
49745b39 | 747 | doc: /* Return the normal height of window WINDOW. |
52162052 | 748 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 | 749 | If HORIZONTAL is non-nil, return the normal width of WINDOW. */) |
496e208e MR |
750 | (Lisp_Object window, Lisp_Object horizontal) |
751 | { | |
52162052 | 752 | struct window *w = decode_valid_window (window); |
d3d50620 DA |
753 | |
754 | return NILP (horizontal) ? w->normal_lines : w->normal_cols; | |
496e208e MR |
755 | } |
756 | ||
757 | DEFUN ("window-new-normal", Fwindow_new_normal, Swindow_new_normal, 0, 1, 0, | |
49745b39 | 758 | doc: /* Return new normal size of window WINDOW. |
52162052 | 759 | WINDOW must be a valid window and defaults to the selected one. */) |
496e208e MR |
760 | (Lisp_Object window) |
761 | { | |
52162052 | 762 | return decode_valid_window (window)->new_normal; |
496e208e MR |
763 | } |
764 | ||
abde8f8c | 765 | DEFUN ("window-left-column", Fwindow_left_column, Swindow_left_column, 0, 1, 0, |
49745b39 | 766 | doc: /* Return left column of window WINDOW. |
105216ed CY |
767 | This is the distance, in columns, between the left edge of WINDOW and |
768 | the left edge of the frame's window area. For instance, the return | |
769 | value is 0 if there is no window to the left of WINDOW. | |
770 | ||
52162052 | 771 | WINDOW must be a valid window and defaults to the selected one. */) |
abde8f8c MR |
772 | (Lisp_Object window) |
773 | { | |
5f24fa51 | 774 | return make_number (decode_valid_window (window)->left_col); |
abde8f8c MR |
775 | } |
776 | ||
777 | DEFUN ("window-top-line", Fwindow_top_line, Swindow_top_line, 0, 1, 0, | |
49745b39 | 778 | doc: /* Return top line of window WINDOW. |
105216ed CY |
779 | This is the distance, in lines, between the top of WINDOW and the top |
780 | of the frame's window area. For instance, the return value is 0 if | |
781 | there is no window above WINDOW. | |
782 | ||
52162052 | 783 | WINDOW must be a valid window and defaults to the selected one. */) |
abde8f8c MR |
784 | (Lisp_Object window) |
785 | { | |
5f24fa51 | 786 | return make_number (decode_valid_window (window)->top_line); |
abde8f8c MR |
787 | } |
788 | ||
789 | /* Return the number of lines of W's body. Don't count any mode or | |
790 | header line of W. */ | |
791 | ||
46a4ce9e | 792 | static int |
abde8f8c MR |
793 | window_body_lines (struct window *w) |
794 | { | |
5f24fa51 | 795 | int height = w->total_lines; |
abde8f8c MR |
796 | |
797 | if (!MINI_WINDOW_P (w)) | |
798 | { | |
799 | if (WINDOW_WANTS_MODELINE_P (w)) | |
800 | --height; | |
801 | if (WINDOW_WANTS_HEADER_LINE_P (w)) | |
802 | --height; | |
803 | } | |
804 | ||
805 | return height; | |
806 | } | |
807 | ||
808 | /* Return the number of columns of W's body. Don't count columns | |
809 | occupied by the scroll bar or the vertical bar separating W from its | |
810 | right sibling. On window-systems don't count fringes or display | |
811 | margins either. */ | |
812 | ||
813 | int | |
814 | window_body_cols (struct window *w) | |
815 | { | |
816 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
5f24fa51 | 817 | int width = w->total_cols; |
abde8f8c MR |
818 | |
819 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) | |
820 | /* Scroll bars occupy a few columns. */ | |
821 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); | |
822 | else if (!FRAME_WINDOW_P (f) | |
823 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
824 | /* The column of `|' characters separating side-by-side windows | |
825 | occupies one column only. */ | |
826 | width -= 1; | |
827 | ||
f1665bdc EZ |
828 | /* Display margins cannot be used for normal text. */ |
829 | width -= WINDOW_LEFT_MARGIN_COLS (w) + WINDOW_RIGHT_MARGIN_COLS (w); | |
830 | ||
abde8f8c | 831 | if (FRAME_WINDOW_P (f)) |
f1665bdc EZ |
832 | /* On window-systems, fringes cannot be used for normal text. */ |
833 | width -= WINDOW_FRINGE_COLS (w); | |
abde8f8c MR |
834 | |
835 | return width; | |
836 | } | |
837 | ||
105216ed CY |
838 | DEFUN ("window-body-height", Fwindow_body_height, Swindow_body_height, 0, 1, 0, |
839 | doc: /* Return the height, in lines, of WINDOW's text area. | |
52162052 | 840 | WINDOW must be a live window and defaults to the selected one. |
89bd5ee1 | 841 | |
105216ed CY |
842 | The returned height does not include the mode line or header line. |
843 | On a graphical display, the height is expressed as an integer multiple | |
844 | of the default character height. If a line at the bottom of the text | |
845 | area is only partially visible, that counts as a whole line; to | |
846 | exclude partially-visible lines, use `window-text-height'. */) | |
847 | (Lisp_Object window) | |
abde8f8c | 848 | { |
b6a9e8b1 | 849 | return make_number (window_body_lines (decode_live_window (window))); |
105216ed | 850 | } |
abde8f8c | 851 | |
105216ed CY |
852 | DEFUN ("window-body-width", Fwindow_body_width, Swindow_body_width, 0, 1, 0, |
853 | doc: /* Return the width, in columns, of WINDOW's text area. | |
52162052 | 854 | WINDOW must be a live window and defaults to the selected one. |
105216ed CY |
855 | |
856 | The return value does not include any vertical dividers, fringe or | |
857 | marginal areas, or scroll bars. On a graphical display, the width is | |
858 | expressed as an integer multiple of the default character width. */) | |
859 | (Lisp_Object window) | |
860 | { | |
b6a9e8b1 | 861 | return make_number (window_body_cols (decode_live_window (window))); |
abde8f8c | 862 | } |
536833ab | 863 | |
7ab12479 | 864 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 | 865 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
496e208e | 866 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 867 | (Lisp_Object window) |
7ab12479 | 868 | { |
52162052 | 869 | return make_number (decode_live_window (window)->hscroll); |
7ab12479 JB |
870 | } |
871 | ||
24a212eb PE |
872 | /* Set W's horizontal scroll amount to HSCROLL clipped to a reasonable |
873 | range, returning the new amount as a fixnum. */ | |
874 | static Lisp_Object | |
875 | set_window_hscroll (struct window *w, EMACS_INT hscroll) | |
876 | { | |
4e71fd89 PE |
877 | /* Horizontal scrolling has problems with large scroll amounts. |
878 | It's too slow with long lines, and even with small lines the | |
879 | display can be messed up. For now, though, impose only the limits | |
880 | required by the internal representation: horizontal scrolling must | |
881 | fit in fixnum (since it's visible to Elisp) and into ptrdiff_t | |
882 | (since it's stored in a ptrdiff_t). */ | |
883 | ptrdiff_t hscroll_max = min (MOST_POSITIVE_FIXNUM, PTRDIFF_MAX); | |
884 | ptrdiff_t new_hscroll = clip_to_bounds (0, hscroll, hscroll_max); | |
24a212eb PE |
885 | |
886 | /* Prevent redisplay shortcuts when changing the hscroll. */ | |
887 | if (w->hscroll != new_hscroll) | |
e74aeda8 | 888 | XBUFFER (w->contents)->prevent_redisplay_optimizations_p = 1; |
24a212eb PE |
889 | |
890 | w->hscroll = new_hscroll; | |
891 | return make_number (new_hscroll); | |
892 | } | |
893 | ||
7ab12479 | 894 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, |
fdb82f93 | 895 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
52162052 | 896 | WINDOW must be a live window and defaults to the selected one. |
24a212eb PE |
897 | Clip the number to a reasonable value if out of range. |
898 | Return the new number. NCOL should be zero or positive. | |
ebadb1e4 EZ |
899 | |
900 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 901 | window so that the location of point moves off-window. */) |
5842a27b | 902 | (Lisp_Object window, Lisp_Object ncol) |
7ab12479 | 903 | { |
b7826503 | 904 | CHECK_NUMBER (ncol); |
89bc0592 | 905 | return set_window_hscroll (decode_live_window (window), XINT (ncol)); |
7ab12479 JB |
906 | } |
907 | ||
190eb263 RS |
908 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
909 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 910 | doc: /* Return WINDOW's redisplay end trigger value. |
52162052 | 911 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 912 | See `set-window-redisplay-end-trigger' for more information. */) |
5842a27b | 913 | (Lisp_Object window) |
190eb263 | 914 | { |
52162052 | 915 | return decode_live_window (window)->redisplay_end_trigger; |
190eb263 RS |
916 | } |
917 | ||
918 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
919 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 | 920 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
52162052 MR |
921 | WINDOW must be a live window and defaults to the selected one. VALUE |
922 | should be a buffer position (typically a marker) or nil. If it is a | |
923 | buffer position, then if redisplay in WINDOW reaches a position beyond | |
924 | VALUE, the functions in `redisplay-end-trigger-functions' are called | |
925 | with two arguments: WINDOW, and the end trigger value. Afterwards the | |
926 | end-trigger value is reset to nil. */) | |
5842a27b | 927 | (register Lisp_Object window, Lisp_Object value) |
190eb263 | 928 | { |
e8c17b81 PE |
929 | wset_redisplay_end_trigger (decode_live_window (window), value); |
930 | return value; | |
190eb263 RS |
931 | } |
932 | ||
7ab12479 | 933 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 | 934 | doc: /* Return a list of the edge coordinates of WINDOW. |
52162052 MR |
935 | WINDOW must be a valid window and defaults to the selected one. |
936 | ||
937 | The returned list has the form (LEFT TOP RIGHT BOTTOM). TOP and BOTTOM | |
938 | count by lines, and LEFT and RIGHT count by columns, all relative to 0, | |
939 | 0 at top left corner of frame. | |
940 | ||
941 | RIGHT is one more than the rightmost column occupied by WINDOW. BOTTOM | |
942 | is one more than the bottommost row occupied by WINDOW. The edges | |
943 | include the space used by WINDOW's scroll bar, display margins, fringes, | |
944 | header line, and/or mode line. For the edges of just the text area, use | |
945 | `window-inside-edges'. */) | |
5842a27b | 946 | (Lisp_Object window) |
7ab12479 | 947 | { |
52162052 | 948 | register struct window *w = decode_valid_window (window); |
7ab12479 | 949 | |
1479c557 PE |
950 | return list4i (WINDOW_LEFT_EDGE_COL (w), WINDOW_TOP_EDGE_LINE (w), |
951 | WINDOW_RIGHT_EDGE_COL (w), WINDOW_BOTTOM_EDGE_LINE (w)); | |
7ab12479 JB |
952 | } |
953 | ||
c99a9eb3 RS |
954 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
955 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
52162052 MR |
956 | WINDOW must be a valid window and defaults to the selected one. |
957 | ||
958 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
959 | 0, 0 at the top left corner of the frame. | |
b35ac83e CY |
960 | |
961 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
962 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
963 | The pixel edges include the space used by WINDOW's scroll bar, display | |
964 | margins, fringes, header line, and/or mode line. For the pixel edges | |
965 | of just the text area, use `window-inside-pixel-edges'. */) | |
5842a27b | 966 | (Lisp_Object window) |
c99a9eb3 | 967 | { |
52162052 | 968 | register struct window *w = decode_valid_window (window); |
c99a9eb3 | 969 | |
1479c557 PE |
970 | return list4i (WINDOW_LEFT_EDGE_X (w), WINDOW_TOP_EDGE_Y (w), |
971 | WINDOW_RIGHT_EDGE_X (w), WINDOW_BOTTOM_EDGE_Y (w)); | |
c99a9eb3 RS |
972 | } |
973 | ||
9d5405ec | 974 | static void |
5e617bc2 | 975 | calc_absolute_offset (struct window *w, int *add_x, int *add_y) |
9d5405ec | 976 | { |
d3d50620 | 977 | struct frame *f = XFRAME (w->frame); |
9d5405ec J |
978 | *add_y = f->top_pos; |
979 | #ifdef FRAME_MENUBAR_HEIGHT | |
980 | *add_y += FRAME_MENUBAR_HEIGHT (f); | |
981 | #endif | |
bfeabdc3 JD |
982 | #ifdef FRAME_TOOLBAR_TOP_HEIGHT |
983 | *add_y += FRAME_TOOLBAR_TOP_HEIGHT (f); | |
984 | #elif FRAME_TOOLBAR_HEIGHT | |
9d5405ec J |
985 | *add_y += FRAME_TOOLBAR_HEIGHT (f); |
986 | #endif | |
987 | #ifdef FRAME_NS_TITLEBAR_HEIGHT | |
988 | *add_y += FRAME_NS_TITLEBAR_HEIGHT (f); | |
989 | #endif | |
990 | *add_x = f->left_pos; | |
bfeabdc3 JD |
991 | #ifdef FRAME_TOOLBAR_LEFT_WIDTH |
992 | *add_x += FRAME_TOOLBAR_LEFT_WIDTH (f); | |
993 | #endif | |
9d5405ec J |
994 | } |
995 | ||
996 | DEFUN ("window-absolute-pixel-edges", Fwindow_absolute_pixel_edges, | |
997 | Swindow_absolute_pixel_edges, 0, 1, 0, | |
998 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
52162052 MR |
999 | WINDOW must be a valid window and defaults to the selected one. |
1000 | ||
1001 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
1002 | 0, 0 at the top left corner of the display. | |
9d5405ec J |
1003 | |
1004 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
1005 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
1006 | The pixel edges include the space used by WINDOW's scroll bar, display | |
1007 | margins, fringes, header line, and/or mode line. For the pixel edges | |
c49d071a | 1008 | of just the text area, use `window-inside-absolute-pixel-edges'. */) |
5842a27b | 1009 | (Lisp_Object window) |
9d5405ec | 1010 | { |
52162052 | 1011 | register struct window *w = decode_valid_window (window); |
9d5405ec | 1012 | int add_x, add_y; |
89bc0592 | 1013 | |
ed3751c8 | 1014 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec | 1015 | |
1479c557 PE |
1016 | return list4i (WINDOW_LEFT_EDGE_X (w) + add_x, |
1017 | WINDOW_TOP_EDGE_Y (w) + add_y, | |
1018 | WINDOW_RIGHT_EDGE_X (w) + add_x, | |
1019 | WINDOW_BOTTOM_EDGE_Y (w) + add_y); | |
9d5405ec J |
1020 | } |
1021 | ||
c99a9eb3 RS |
1022 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, |
1023 | doc: /* Return a list of the edge coordinates of WINDOW. | |
52162052 MR |
1024 | WINDOW must be a live window and defaults to the selected one. |
1025 | ||
1026 | The returned list has the form (LEFT TOP RIGHT BOTTOM). TOP and BOTTOM | |
1027 | count by lines, and LEFT and RIGHT count by columns, all relative to 0, | |
1028 | 0 at top left corner of frame. | |
b35ac83e CY |
1029 | |
1030 | RIGHT is one more than the rightmost column of WINDOW's text area. | |
52162052 MR |
1031 | BOTTOM is one more than the bottommost row of WINDOW's text area. The |
1032 | inside edges do not include the space used by the WINDOW's scroll bar, | |
1033 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 1034 | (Lisp_Object window) |
c99a9eb3 | 1035 | { |
52162052 | 1036 | register struct window *w = decode_live_window (window); |
c99a9eb3 | 1037 | |
1479c557 PE |
1038 | return list4i ((WINDOW_BOX_LEFT_EDGE_COL (w) |
1039 | + WINDOW_LEFT_MARGIN_COLS (w) | |
1040 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
1041 | (WINDOW_TOP_EDGE_LINE (w) | |
1042 | + WINDOW_HEADER_LINE_LINES (w)), | |
1043 | (WINDOW_BOX_RIGHT_EDGE_COL (w) | |
1044 | - WINDOW_RIGHT_MARGIN_COLS (w) | |
1045 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
1046 | (WINDOW_BOTTOM_EDGE_LINE (w) | |
1047 | - WINDOW_MODE_LINE_LINES (w))); | |
c99a9eb3 RS |
1048 | } |
1049 | ||
1050 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
2fbdc249 | 1051 | doc: /* Return a list of the edge pixel coordinates of WINDOW's text area. |
52162052 MR |
1052 | WINDOW must be a live window and defaults to the selected one. |
1053 | ||
1054 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
1055 | (0,0) at the top left corner of the frame's window area. | |
b35ac83e CY |
1056 | |
1057 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
1058 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
1059 | The inside edges do not include the space used by WINDOW's scroll bar, | |
c99a9eb3 | 1060 | display margins, fringes, header line, and/or mode line. */) |
5842a27b | 1061 | (Lisp_Object window) |
c99a9eb3 | 1062 | { |
52162052 | 1063 | register struct window *w = decode_live_window (window); |
c99a9eb3 | 1064 | |
1479c557 PE |
1065 | return list4i ((WINDOW_BOX_LEFT_EDGE_X (w) |
1066 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
1067 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
1068 | (WINDOW_TOP_EDGE_Y (w) | |
1069 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
1070 | (WINDOW_BOX_RIGHT_EDGE_X (w) | |
1071 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
1072 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
1073 | (WINDOW_BOTTOM_EDGE_Y (w) | |
1074 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
c99a9eb3 RS |
1075 | } |
1076 | ||
9d5405ec J |
1077 | DEFUN ("window-inside-absolute-pixel-edges", |
1078 | Fwindow_inside_absolute_pixel_edges, | |
1079 | Swindow_inside_absolute_pixel_edges, 0, 1, 0, | |
2fbdc249 | 1080 | doc: /* Return a list of the edge pixel coordinates of WINDOW's text area. |
52162052 MR |
1081 | WINDOW must be a live window and defaults to the selected one. |
1082 | ||
1083 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
1084 | (0,0) at the top left corner of the frame's window area. | |
9d5405ec J |
1085 | |
1086 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
1087 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
1088 | The inside edges do not include the space used by WINDOW's scroll bar, | |
1089 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 1090 | (Lisp_Object window) |
9d5405ec | 1091 | { |
52162052 | 1092 | register struct window *w = decode_live_window (window); |
9d5405ec | 1093 | int add_x, add_y; |
89bc0592 | 1094 | |
ed3751c8 | 1095 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec | 1096 | |
1479c557 PE |
1097 | return list4i ((WINDOW_BOX_LEFT_EDGE_X (w) |
1098 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
1099 | + WINDOW_LEFT_FRINGE_WIDTH (w) + add_x), | |
1100 | (WINDOW_TOP_EDGE_Y (w) | |
1101 | + WINDOW_HEADER_LINE_HEIGHT (w) + add_y), | |
1102 | (WINDOW_BOX_RIGHT_EDGE_X (w) | |
1103 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
1104 | - WINDOW_RIGHT_FRINGE_WIDTH (w) + add_x), | |
1105 | (WINDOW_BOTTOM_EDGE_Y (w) | |
1106 | - WINDOW_MODE_LINE_HEIGHT (w) + add_y)); | |
9d5405ec J |
1107 | } |
1108 | ||
9173a8fb | 1109 | /* Test if the character at column X, row Y is within window W. |
341f3858 | 1110 | If it is not, return ON_NOTHING; |
9173a8fb | 1111 | if it is in the window's text area, return ON_TEXT; |
341f3858 | 1112 | if it is on the window's modeline, return ON_MODE_LINE; |
d5783c40 | 1113 | if it is on the border between the window and its right sibling, |
341f3858 | 1114 | return ON_VERTICAL_BORDER. |
9173a8fb | 1115 | if it is on a scroll bar, return ON_SCROLL_BAR. |
341f3858 | 1116 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 1117 | if it is in left or right fringe of the window, |
9173a8fb | 1118 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE; |
49b996e7 | 1119 | if it is in the marginal area to the left/right of the window, |
9173a8fb | 1120 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN. |
5500c422 GM |
1121 | |
1122 | X and Y are frame relative pixel coordinates. */ | |
1123 | ||
7442878f | 1124 | static enum window_part |
9173a8fb | 1125 | coordinates_in_window (register struct window *w, int x, int y) |
d5783c40 | 1126 | { |
b0228ace | 1127 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
7442878f | 1128 | enum window_part part; |
949cf20f | 1129 | int ux = FRAME_COLUMN_WIDTH (f); |
c7b08b0d MR |
1130 | int left_x = WINDOW_LEFT_EDGE_X (w); |
1131 | int right_x = WINDOW_RIGHT_EDGE_X (w); | |
1132 | int top_y = WINDOW_TOP_EDGE_Y (w); | |
1133 | int bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
dad75588 GM |
1134 | /* The width of the area where the vertical line can be dragged. |
1135 | (Between mode lines for instance. */ | |
1136 | int grabbable_width = ux; | |
949cf20f | 1137 | int lmargin_width, rmargin_width, text_left, text_right; |
9173a8fb | 1138 | |
c7b08b0d MR |
1139 | /* Outside any interesting row or column? */ |
1140 | if (y < top_y || y >= bottom_y || x < left_x || x >= right_x) | |
9173a8fb | 1141 | return ON_NOTHING; |
b0228ace | 1142 | |
c7b08b0d MR |
1143 | /* On the mode line or header line? */ |
1144 | if ((WINDOW_WANTS_MODELINE_P (w) | |
1145 | && y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w) | |
1146 | && (part = ON_MODE_LINE)) | |
1147 | || (WINDOW_WANTS_HEADER_LINE_P (w) | |
1148 | && y < top_y + CURRENT_HEADER_LINE_HEIGHT (w) | |
1149 | && (part = ON_HEADER_LINE))) | |
1150 | { | |
1151 | /* If it's under/over the scroll bar portion of the mode/header | |
1152 | line, say it's on the vertical line. That's to be able to | |
1153 | resize windows horizontally in case we're using toolkit scroll | |
1154 | bars. Note: If scrollbars are on the left, the window that | |
1155 | must be eventually resized is that on the left of WINDOW. */ | |
1156 | if ((WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) | |
1157 | && !WINDOW_LEFTMOST_P (w) | |
1158 | && eabs (x - left_x) < grabbable_width) | |
1159 | || (!WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) | |
1160 | && !WINDOW_RIGHTMOST_P (w) | |
1161 | && eabs (x - right_x) < grabbable_width)) | |
1162 | return ON_VERTICAL_BORDER; | |
1163 | else | |
1164 | return part; | |
1165 | } | |
1166 | ||
466539bc EZ |
1167 | /* In what's below, we subtract 1 when computing right_x because we |
1168 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
1169 | if (w->pseudo_window_p) |
1170 | { | |
1171 | left_x = 0; | |
949cf20f | 1172 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
5500c422 GM |
1173 | } |
1174 | else | |
1175 | { | |
949cf20f KS |
1176 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
1177 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
5500c422 | 1178 | } |
37962e60 | 1179 | |
949cf20f | 1180 | /* Outside any interesting column? */ |
9173a8fb CY |
1181 | if (x < left_x || x > right_x) |
1182 | return ON_SCROLL_BAR; | |
949cf20f KS |
1183 | |
1184 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
1185 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 1186 | |
949cf20f KS |
1187 | text_left = window_box_left (w, TEXT_AREA); |
1188 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
1189 | ||
1190 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 1191 | { |
447e9da0 | 1192 | if (!w->pseudo_window_p |
949cf20f | 1193 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 1194 | && !WINDOW_RIGHTMOST_P (w) |
9173a8fb CY |
1195 | && (eabs (x - right_x) < grabbable_width)) |
1196 | return ON_VERTICAL_BORDER; | |
fbad6f9a | 1197 | } |
9173a8fb CY |
1198 | /* Need to say "x > right_x" rather than >=, since on character |
1199 | terminals, the vertical line's x coordinate is right_x. */ | |
1200 | else if (!w->pseudo_window_p | |
1201 | && !WINDOW_RIGHTMOST_P (w) | |
1202 | && x > right_x - ux) | |
1203 | return ON_VERTICAL_BORDER; | |
1204 | ||
1205 | if (x < text_left) | |
949cf20f KS |
1206 | { |
1207 | if (lmargin_width > 0 | |
1208 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1209 | ? (x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) |
1210 | : (x < left_x + lmargin_width))) | |
1211 | return ON_LEFT_MARGIN; | |
1212 | ||
949cf20f KS |
1213 | return ON_LEFT_FRINGE; |
1214 | } | |
1215 | ||
9173a8fb | 1216 | if (x >= text_right) |
949cf20f KS |
1217 | { |
1218 | if (rmargin_width > 0 | |
1219 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1220 | ? (x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) |
1221 | : (x >= right_x - rmargin_width))) | |
1222 | return ON_RIGHT_MARGIN; | |
1223 | ||
949cf20f KS |
1224 | return ON_RIGHT_FRINGE; |
1225 | } | |
1226 | ||
1227 | /* Everything special ruled out - must be on text area */ | |
949cf20f | 1228 | return ON_TEXT; |
d5783c40 JB |
1229 | } |
1230 | ||
9173a8fb CY |
1231 | /* Take X is the frame-relative pixel x-coordinate, and return the |
1232 | x-coordinate relative to part PART of window W. */ | |
1233 | int | |
1234 | window_relative_x_coord (struct window *w, enum window_part part, int x) | |
1235 | { | |
1236 | int left_x = (w->pseudo_window_p) ? 0 : WINDOW_BOX_LEFT_EDGE_X (w); | |
1237 | ||
1238 | switch (part) | |
1239 | { | |
1240 | case ON_TEXT: | |
1241 | return x - window_box_left (w, TEXT_AREA); | |
1242 | ||
1243 | case ON_LEFT_FRINGE: | |
1244 | return x - left_x; | |
1245 | ||
1246 | case ON_RIGHT_FRINGE: | |
1247 | return x - left_x - WINDOW_LEFT_FRINGE_WIDTH (w); | |
1248 | ||
1249 | case ON_LEFT_MARGIN: | |
1250 | return (x - left_x | |
1251 | - ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1252 | ? WINDOW_LEFT_FRINGE_WIDTH (w) : 0)); | |
1253 | ||
1254 | case ON_RIGHT_MARGIN: | |
1255 | return (x + 1 | |
1256 | - ((w->pseudo_window_p) | |
1257 | ? WINDOW_TOTAL_WIDTH (w) | |
1258 | : WINDOW_BOX_RIGHT_EDGE_X (w)) | |
1259 | + window_box_width (w, RIGHT_MARGIN_AREA) | |
1260 | + ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1261 | ? WINDOW_RIGHT_FRINGE_WIDTH (w) : 0)); | |
1262 | } | |
1263 | ||
1264 | /* ON_SCROLL_BAR, ON_NOTHING, and ON_VERTICAL_BORDER: */ | |
1265 | return 0; | |
1266 | } | |
1267 | ||
b0228ace | 1268 | |
d5783c40 | 1269 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
1270 | Scoordinates_in_window_p, 2, 2, 0, |
1271 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
52162052 | 1272 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1273 | COORDINATES is a cons of the form (X . Y), X and Y being distances |
1274 | measured in characters from the upper-left corner of the frame. | |
23fe745a | 1275 | \(0 . 0) denotes the character in the upper left corner of the |
fdb82f93 PJ |
1276 | frame. |
1277 | If COORDINATES are in the text portion of WINDOW, | |
1278 | the coordinates relative to the window are returned. | |
1279 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
1280 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
1281 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
1282 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 1283 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
1284 | `vertical-line' is returned. |
1285 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
1286 | or `right-margin' is returned. */) | |
5842a27b | 1287 | (register Lisp_Object coordinates, Lisp_Object window) |
d5783c40 | 1288 | { |
5500c422 GM |
1289 | struct window *w; |
1290 | struct frame *f; | |
d5783c40 | 1291 | int x, y; |
5500c422 | 1292 | Lisp_Object lx, ly; |
d5783c40 | 1293 | |
52162052 | 1294 | w = decode_live_window (window); |
d3d50620 | 1295 | f = XFRAME (w->frame); |
b7826503 | 1296 | CHECK_CONS (coordinates); |
5500c422 GM |
1297 | lx = Fcar (coordinates); |
1298 | ly = Fcdr (coordinates); | |
b7826503 PJ |
1299 | CHECK_NUMBER_OR_FLOAT (lx); |
1300 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
1301 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
1302 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 | 1303 | |
9173a8fb | 1304 | switch (coordinates_in_window (w, x, y)) |
d5783c40 | 1305 | { |
7442878f | 1306 | case ON_NOTHING: |
d5783c40 JB |
1307 | return Qnil; |
1308 | ||
7442878f | 1309 | case ON_TEXT: |
9173a8fb CY |
1310 | /* Convert X and Y to window relative pixel coordinates, and |
1311 | return the canonical char units. */ | |
1312 | x -= window_box_left (w, TEXT_AREA); | |
1313 | y -= WINDOW_TOP_EDGE_Y (w); | |
949cf20f KS |
1314 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
1315 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 1316 | |
7442878f | 1317 | case ON_MODE_LINE: |
d5783c40 | 1318 | return Qmode_line; |
37962e60 | 1319 | |
7442878f | 1320 | case ON_VERTICAL_BORDER: |
e5d77022 | 1321 | return Qvertical_line; |
d5783c40 | 1322 | |
7442878f | 1323 | case ON_HEADER_LINE: |
045dee35 | 1324 | return Qheader_line; |
5500c422 | 1325 | |
7442878f GM |
1326 | case ON_LEFT_FRINGE: |
1327 | return Qleft_fringe; | |
177c0ea7 | 1328 | |
7442878f GM |
1329 | case ON_RIGHT_FRINGE: |
1330 | return Qright_fringe; | |
fbad6f9a | 1331 | |
49b996e7 GM |
1332 | case ON_LEFT_MARGIN: |
1333 | return Qleft_margin; | |
177c0ea7 | 1334 | |
49b996e7 GM |
1335 | case ON_RIGHT_MARGIN: |
1336 | return Qright_margin; | |
1337 | ||
6487f669 RS |
1338 | case ON_SCROLL_BAR: |
1339 | /* Historically we are supposed to return nil in this case. */ | |
1340 | return Qnil; | |
1341 | ||
d5783c40 | 1342 | default: |
1088b922 | 1343 | emacs_abort (); |
d5783c40 JB |
1344 | } |
1345 | } | |
1346 | ||
67492200 GM |
1347 | |
1348 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
1349 | Check if window W contains coordinates specified by USER_DATA which |
1350 | is actually a pointer to a struct check_window_data CW. | |
1351 | ||
1352 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
1353 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 1354 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
1355 | zero from this function to stop iterating over windows. */ |
1356 | ||
1357 | struct check_window_data | |
1358 | { | |
1359 | Lisp_Object *window; | |
9173a8fb | 1360 | int x, y; |
341f3858 | 1361 | enum window_part *part; |
f95464e4 | 1362 | }; |
67492200 GM |
1363 | |
1364 | static int | |
971de7fb | 1365 | check_window_containing (struct window *w, void *user_data) |
67492200 | 1366 | { |
f95464e4 | 1367 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
1368 | enum window_part found; |
1369 | int continue_p = 1; | |
67492200 | 1370 | |
f95464e4 | 1371 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1372 | if (found != ON_NOTHING) |
67492200 | 1373 | { |
341f3858 | 1374 | *cw->part = found; |
f95464e4 | 1375 | XSETWINDOW (*cw->window, w); |
7442878f | 1376 | continue_p = 0; |
67492200 | 1377 | } |
177c0ea7 | 1378 | |
7442878f | 1379 | return continue_p; |
67492200 GM |
1380 | } |
1381 | ||
1382 | ||
5500c422 | 1383 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1384 | return it as a Lisp_Object. |
1385 | ||
1386 | If X, Y is on one of the window's special `window_part' elements, | |
9173a8fb | 1387 | set *PART to the id of that element. |
949cf20f | 1388 | |
341f3858 | 1389 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1390 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1391 | ||
1392 | This function was previously implemented with a loop cycling over | |
1393 | windows with Fnext_window, and starting with the frame's selected | |
1394 | window. It turned out that this doesn't work with an | |
1395 | implementation of next_window using Vwindow_list, because | |
1396 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1397 | tree of F when this function is called asynchronously from | |
1398 | note_mouse_highlight. The original loop didn't terminate in this | |
1399 | case. */ | |
5500c422 | 1400 | |
7ab12479 | 1401 | Lisp_Object |
9173a8fb | 1402 | window_from_coordinates (struct frame *f, int x, int y, |
748fa866 | 1403 | enum window_part *part, bool tool_bar_p) |
7ab12479 | 1404 | { |
67492200 | 1405 | Lisp_Object window; |
f95464e4 | 1406 | struct check_window_data cw; |
341f3858 KS |
1407 | enum window_part dummy; |
1408 | ||
1409 | if (part == 0) | |
1410 | part = &dummy; | |
5500c422 | 1411 | |
67492200 | 1412 | window = Qnil; |
9173a8fb | 1413 | cw.window = &window, cw.x = x, cw.y = y; cw.part = part; |
f95464e4 | 1414 | foreach_window (f, check_window_containing, &cw); |
177c0ea7 | 1415 | |
67492200 GM |
1416 | /* If not found above, see if it's in the tool bar window, if a tool |
1417 | bar exists. */ | |
1418 | if (NILP (window) | |
1419 | && tool_bar_p | |
e69b0960 DA |
1420 | && WINDOWP (f->tool_bar_window) |
1421 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 | |
1422 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), x, y) | |
7442878f | 1423 | != ON_NOTHING)) |
5500c422 | 1424 | { |
341f3858 | 1425 | *part = ON_TEXT; |
e69b0960 | 1426 | window = f->tool_bar_window; |
5500c422 | 1427 | } |
37962e60 | 1428 | |
67492200 | 1429 | return window; |
7ab12479 JB |
1430 | } |
1431 | ||
ab17c3f2 | 1432 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 | 1433 | doc: /* Return window containing coordinates X and Y on FRAME. |
496e208e | 1434 | FRAME must be a live frame and defaults to the selected one. |
fdb82f93 PJ |
1435 | The top left corner of the frame is considered to be row 0, |
1436 | column 0. */) | |
5842a27b | 1437 | (Lisp_Object x, Lisp_Object y, Lisp_Object frame) |
7ab12479 | 1438 | { |
d9f07150 | 1439 | struct frame *f = decode_live_frame (frame); |
7ab12479 | 1440 | |
5500c422 | 1441 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1442 | CHECK_NUMBER_OR_FLOAT (x); |
1443 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1444 | |
177c0ea7 | 1445 | return window_from_coordinates (f, |
2c77cf3b RS |
1446 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1447 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1448 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1449 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
9173a8fb | 1450 | 0, 0); |
7ab12479 JB |
1451 | } |
1452 | ||
1453 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1454 | doc: /* Return current value of point in WINDOW. |
496e208e | 1455 | WINDOW must be a live window and defaults to the selected one. |
c85322d0 | 1456 | |
5481664a MR |
1457 | For a nonselected window, this is the value point would have if that |
1458 | window were selected. | |
1459 | ||
1460 | Note that, when WINDOW is selected, the value returned is the same as | |
1461 | that returned by `point' for WINDOW's buffer. It would be more strictly | |
9fc9a531 | 1462 | correct to return the top-level value of `point', outside of any |
5481664a | 1463 | `save-excursion' forms. But that is hard to define. */) |
5842a27b | 1464 | (Lisp_Object window) |
7ab12479 | 1465 | { |
52162052 | 1466 | register struct window *w = decode_live_window (window); |
7ab12479 | 1467 | |
5481664a | 1468 | if (w == XWINDOW (selected_window)) |
e74aeda8 | 1469 | return make_number (BUF_PT (XBUFFER (w->contents))); |
5481664a MR |
1470 | else |
1471 | return Fmarker_position (w->pointm); | |
7ab12479 JB |
1472 | } |
1473 | ||
1474 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1475 | doc: /* Return position at which display currently starts in WINDOW. |
496e208e | 1476 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 1477 | This is updated by redisplay or by calling `set-window-start'. */) |
5842a27b | 1478 | (Lisp_Object window) |
7ab12479 | 1479 | { |
52162052 | 1480 | return Fmarker_position (decode_live_window (window)->start); |
7ab12479 JB |
1481 | } |
1482 | ||
8646118f RS |
1483 | /* This is text temporarily removed from the doc string below. |
1484 | ||
fdb82f93 PJ |
1485 | This function returns nil if the position is not currently known. |
1486 | That happens when redisplay is preempted and doesn't finish. | |
1487 | If in that case you want to compute where the end of the window would | |
1488 | have been if redisplay had finished, do this: | |
1489 | (save-excursion | |
1490 | (goto-char (window-start window)) | |
1491 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1492 | (point))") */ |
1493 | ||
478292ed | 1494 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1495 | doc: /* Return position at which display currently ends in WINDOW. |
496e208e | 1496 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1497 | This is updated by redisplay, when it runs to completion. |
1498 | Simply changing the buffer text or setting `window-start' | |
1499 | does not update this value. | |
87e68db4 | 1500 | Return nil if there is no recorded value. (This can happen if the |
a0a37a6f | 1501 | last redisplay of WINDOW was preempted, and did not finish.) |
fdb82f93 PJ |
1502 | If UPDATE is non-nil, compute the up-to-date position |
1503 | if it isn't already recorded. */) | |
5842a27b | 1504 | (Lisp_Object window, Lisp_Object update) |
7ab12479 JB |
1505 | { |
1506 | Lisp_Object value; | |
52162052 | 1507 | struct window *w = decode_live_window (window); |
5a41ab94 | 1508 | Lisp_Object buf; |
31790df3 | 1509 | struct buffer *b; |
5a41ab94 | 1510 | |
e74aeda8 | 1511 | buf = w->contents; |
b7826503 | 1512 | CHECK_BUFFER (buf); |
b3a10345 | 1513 | b = XBUFFER (buf); |
5a41ab94 | 1514 | |
478292ed | 1515 | if (! NILP (update) |
fcc1fe85 EZ |
1516 | && (windows_or_buffers_changed |
1517 | || !w->window_end_valid | |
1518 | || b->clip_changed | |
1519 | || b->prevent_redisplay_optimizations_p | |
170da1ec | 1520 | || window_outdated (w)) |
41791a20 | 1521 | && !noninteractive) |
478292ed | 1522 | { |
cbc099e5 | 1523 | struct text_pos startp; |
4c1acb95 | 1524 | ptrdiff_t charpos = marker_position (w->start); |
cbc099e5 | 1525 | struct it it; |
b3a10345 | 1526 | struct buffer *old_buffer = NULL; |
57b3e30b | 1527 | void *itdata = NULL; |
b3a10345 KS |
1528 | |
1529 | /* Cannot use Fvertical_motion because that function doesn't | |
1530 | cope with variable-height lines. */ | |
1531 | if (b != current_buffer) | |
1532 | { | |
1533 | old_buffer = current_buffer; | |
1534 | set_buffer_internal (b); | |
1535 | } | |
2d6d9df0 GM |
1536 | |
1537 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1538 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1539 | `-l' containing a call to `rmail' with subsequent other |
1540 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1541 | rmail had already narrowed the buffer. */ |
4c1acb95 | 1542 | if (charpos < BEGV) |
cbc099e5 | 1543 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
4c1acb95 | 1544 | else if (charpos > ZV) |
cbc099e5 | 1545 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1546 | else |
d3d50620 | 1547 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
cbc099e5 | 1548 | |
57b3e30b | 1549 | itdata = bidi_shelve_cache (); |
cbc099e5 GM |
1550 | start_display (&it, w, startp); |
1551 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1552 | if (it.current_y < it.last_visible_y) |
1553 | move_it_past_eol (&it); | |
cbc099e5 | 1554 | value = make_number (IT_CHARPOS (it)); |
35928349 | 1555 | bidi_unshelve_cache (itdata, 0); |
177c0ea7 | 1556 | |
99593a9d GM |
1557 | if (old_buffer) |
1558 | set_buffer_internal (old_buffer); | |
478292ed RS |
1559 | } |
1560 | else | |
d3d50620 | 1561 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1562 | |
1563 | return value; | |
1564 | } | |
1565 | ||
a7ca3326 | 1566 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, |
a0a37a6f | 1567 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
52162052 | 1568 | WINDOW must be a live window and defaults to the selected one. |
a0a37a6f | 1569 | Return POS. */) |
5842a27b | 1570 | (Lisp_Object window, Lisp_Object pos) |
7ab12479 | 1571 | { |
52162052 | 1572 | register struct window *w = decode_live_window (window); |
7ab12479 | 1573 | |
f74de345 | 1574 | /* Type of POS is checked by Fgoto_char or set_marker_restricted ... */ |
799417bd | 1575 | |
5481664a MR |
1576 | if (w == XWINDOW (selected_window)) |
1577 | { | |
e74aeda8 | 1578 | if (XBUFFER (w->contents) == current_buffer) |
5481664a MR |
1579 | Fgoto_char (pos); |
1580 | else | |
1581 | { | |
1582 | struct buffer *old_buffer = current_buffer; | |
1583 | ||
f74de345 DA |
1584 | /* ... but here we want to catch type error before buffer change. */ |
1585 | CHECK_NUMBER_COERCE_MARKER (pos); | |
e74aeda8 | 1586 | set_buffer_internal (XBUFFER (w->contents)); |
5481664a MR |
1587 | Fgoto_char (pos); |
1588 | set_buffer_internal (old_buffer); | |
1589 | } | |
1590 | } | |
1591 | else | |
1592 | { | |
e74aeda8 | 1593 | set_marker_restricted (w->pointm, pos, w->contents); |
5481664a MR |
1594 | /* We have to make sure that redisplay updates the window to show |
1595 | the new value of point. */ | |
1596 | ++windows_or_buffers_changed; | |
1597 | } | |
177c0ea7 | 1598 | |
7ab12479 JB |
1599 | return pos; |
1600 | } | |
1601 | ||
1602 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1603 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
52162052 MR |
1604 | WINDOW must be a live window and defaults to the selected one. Return |
1605 | POS. Optional third arg NOFORCE non-nil inhibits next redisplay from | |
d653c8cc | 1606 | overriding motion of point in order to display at this exact start. */) |
5842a27b | 1607 | (Lisp_Object window, Lisp_Object pos, Lisp_Object noforce) |
7ab12479 | 1608 | { |
52162052 | 1609 | register struct window *w = decode_live_window (window); |
7ab12479 | 1610 | |
e74aeda8 | 1611 | set_marker_restricted (w->start, pos, w->contents); |
f74de345 | 1612 | /* This is not right, but much easier than doing what is right. */ |
c98ff5dd | 1613 | w->start_at_line_beg = 0; |
265a9e55 | 1614 | if (NILP (noforce)) |
c98ff5dd DA |
1615 | w->force_start = 1; |
1616 | w->update_mode_line = 1; | |
80b00b08 DA |
1617 | w->last_modified = 0; |
1618 | w->last_overlay_modified = 0; | |
62c07cc7 JB |
1619 | if (!EQ (window, selected_window)) |
1620 | windows_or_buffers_changed++; | |
ce7fae7d | 1621 | |
7ab12479 JB |
1622 | return pos; |
1623 | } | |
1624 | ||
496e208e MR |
1625 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
1626 | Spos_visible_in_window_p, 0, 3, 0, | |
1627 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. | |
52162052 MR |
1628 | WINDOW must be a live window and defaults to the selected one. |
1629 | ||
1630 | Return nil if that position is scrolled vertically out of view. If a | |
1631 | character is only partially visible, nil is returned, unless the | |
1632 | optional argument PARTIALLY is non-nil. If POS is only out of view | |
1633 | because of horizontal scrolling, return non-nil. If POS is t, it | |
1634 | specifies the position of the last visible glyph in WINDOW. POS | |
1635 | defaults to point in WINDOW; WINDOW defaults to the selected window. | |
496e208e MR |
1636 | |
1637 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
ba59bd80 | 1638 | the return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), |
496e208e MR |
1639 | where X and Y are the pixel coordinates relative to the top left corner |
1640 | of the window. The remaining elements are omitted if the character after | |
1641 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
ba59bd80 EZ |
1642 | off-window at the top and bottom of the screen line ("row") containing |
1643 | POS, ROWH is the visible height of that row, and VPOS is the row number | |
1644 | \(zero-based). */) | |
496e208e MR |
1645 | (Lisp_Object pos, Lisp_Object window, Lisp_Object partially) |
1646 | { | |
1647 | register struct window *w; | |
1648 | register EMACS_INT posint; | |
1649 | register struct buffer *buf; | |
1650 | struct text_pos top; | |
1651 | Lisp_Object in_window = Qnil; | |
1652 | int rtop, rbot, rowh, vpos, fully_p = 1; | |
1653 | int x, y; | |
1654 | ||
52162052 | 1655 | w = decode_live_window (window); |
e74aeda8 | 1656 | buf = XBUFFER (w->contents); |
d3d50620 | 1657 | SET_TEXT_POS_FROM_MARKER (top, w->start); |
496e208e MR |
1658 | |
1659 | if (EQ (pos, Qt)) | |
1660 | posint = -1; | |
1661 | else if (!NILP (pos)) | |
1662 | { | |
1663 | CHECK_NUMBER_COERCE_MARKER (pos); | |
1664 | posint = XINT (pos); | |
1665 | } | |
1666 | else if (w == XWINDOW (selected_window)) | |
1667 | posint = PT; | |
1668 | else | |
4c1acb95 | 1669 | posint = marker_position (w->pointm); |
496e208e MR |
1670 | |
1671 | /* If position is above window start or outside buffer boundaries, | |
1672 | or if window start is out of range, position is not visible. */ | |
1673 | if ((EQ (pos, Qt) | |
1674 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
1675 | && CHARPOS (top) >= BUF_BEGV (buf) | |
1676 | && CHARPOS (top) <= BUF_ZV (buf) | |
1677 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) | |
1678 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) | |
1679 | in_window = Qt; | |
1680 | ||
1681 | if (!NILP (in_window) && !NILP (partially)) | |
1682 | { | |
1683 | Lisp_Object part = Qnil; | |
1684 | if (!fully_p) | |
1479c557 | 1685 | part = list4i (rtop, rbot, rowh, vpos); |
496e208e MR |
1686 | in_window = Fcons (make_number (x), |
1687 | Fcons (make_number (y), part)); | |
1688 | } | |
1689 | ||
1690 | return in_window; | |
1691 | } | |
1692 | ||
1693 | DEFUN ("window-line-height", Fwindow_line_height, | |
1694 | Swindow_line_height, 0, 2, 0, | |
1695 | doc: /* Return height in pixels of text line LINE in window WINDOW. | |
52162052 | 1696 | WINDOW must be a live window and defaults to the selected one. |
496e208e MR |
1697 | |
1698 | Return height of current line if LINE is omitted or nil. Return height of | |
1699 | header or mode line if LINE is `header-line' or `mode-line'. | |
1700 | Otherwise, LINE is a text line number starting from 0. A negative number | |
1701 | counts from the end of the window. | |
1702 | ||
1703 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height | |
1704 | in pixels of the visible part of the line, VPOS and YPOS are the | |
1705 | vertical position in lines and pixels of the line, relative to the top | |
1706 | of the first text line, and OFFBOT is the number of off-window pixels at | |
1707 | the bottom of the text line. If there are off-window pixels at the top | |
1708 | of the (first) text line, YPOS is negative. | |
1709 | ||
1710 | Return nil if window display is not up-to-date. In that case, use | |
1711 | `pos-visible-in-window-p' to obtain the information. */) | |
1712 | (Lisp_Object line, Lisp_Object window) | |
1713 | { | |
1714 | register struct window *w; | |
1715 | register struct buffer *b; | |
1716 | struct glyph_row *row, *end_row; | |
d311d28c PE |
1717 | int max_y, crop, i; |
1718 | EMACS_INT n; | |
496e208e | 1719 | |
52162052 | 1720 | w = decode_live_window (window); |
496e208e MR |
1721 | |
1722 | if (noninteractive || w->pseudo_window_p) | |
1723 | return Qnil; | |
1724 | ||
e74aeda8 DA |
1725 | CHECK_BUFFER (w->contents); |
1726 | b = XBUFFER (w->contents); | |
496e208e MR |
1727 | |
1728 | /* Fail if current matrix is not up-to-date. */ | |
9d93ce29 | 1729 | if (!w->window_end_valid |
fcc1fe85 EZ |
1730 | || windows_or_buffers_changed |
1731 | || b->clip_changed | |
1732 | || b->prevent_redisplay_optimizations_p | |
170da1ec | 1733 | || window_outdated (w)) |
496e208e MR |
1734 | return Qnil; |
1735 | ||
1736 | if (NILP (line)) | |
1737 | { | |
1738 | i = w->cursor.vpos; | |
1739 | if (i < 0 || i >= w->current_matrix->nrows | |
1740 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
1741 | return Qnil; | |
1742 | max_y = window_text_bottom_y (w); | |
1743 | goto found_row; | |
1744 | } | |
1745 | ||
1746 | if (EQ (line, Qheader_line)) | |
1747 | { | |
1748 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) | |
1749 | return Qnil; | |
1750 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
1479c557 | 1751 | return row->enabled_p ? list4i (row->height, 0, 0, 0) : Qnil; |
496e208e MR |
1752 | } |
1753 | ||
1754 | if (EQ (line, Qmode_line)) | |
1755 | { | |
1756 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); | |
89bc0592 | 1757 | return (row->enabled_p ? |
1479c557 PE |
1758 | list4i (row->height, |
1759 | 0, /* not accurate */ | |
1760 | (WINDOW_HEADER_LINE_HEIGHT (w) | |
1761 | + window_text_bottom_y (w)), | |
1762 | 0) | |
89bc0592 | 1763 | : Qnil); |
496e208e MR |
1764 | } |
1765 | ||
1766 | CHECK_NUMBER (line); | |
1767 | n = XINT (line); | |
1768 | ||
1769 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
1770 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
1771 | max_y = window_text_bottom_y (w); | |
1772 | i = 0; | |
1773 | ||
1774 | while ((n < 0 || i < n) | |
1775 | && row <= end_row && row->enabled_p | |
1776 | && row->y + row->height < max_y) | |
1777 | row++, i++; | |
1778 | ||
1779 | if (row > end_row || !row->enabled_p) | |
1780 | return Qnil; | |
1781 | ||
1782 | if (++n < 0) | |
1783 | { | |
1784 | if (-n > i) | |
1785 | return Qnil; | |
1786 | row += n; | |
1787 | i += n; | |
1788 | } | |
1789 | ||
1790 | found_row: | |
1791 | crop = max (0, (row->y + row->height) - max_y); | |
1479c557 | 1792 | return list4i (row->height + min (0, row->y) - crop, i, row->y, crop); |
496e208e | 1793 | } |
d653c8cc | 1794 | |
a7ca3326 | 1795 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, |
d653c8cc MR |
1796 | 0, 1, 0, |
1797 | doc: /* Return non-nil when WINDOW is dedicated to its buffer. | |
12bb3111 | 1798 | More precisely, return the value assigned by the last call of |
7bfac547 MR |
1799 | `set-window-dedicated-p' for WINDOW. Return nil if that function was |
1800 | never called with WINDOW as its argument, or the value set by that | |
52162052 MR |
1801 | function was internally reset since its last call. WINDOW must be a |
1802 | live window and defaults to the selected one. | |
7bfac547 MR |
1803 | |
1804 | When a window is dedicated to its buffer, `display-buffer' will refrain | |
1805 | from displaying another buffer in it. `get-lru-window' and | |
1806 | `get-largest-window' treat dedicated windows specially. | |
1807 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1808 | `kill-buffer' can delete a dedicated window and the containing frame. | |
1809 | ||
1810 | Functions like `set-window-buffer' may change the buffer displayed by a | |
1811 | window, unless that window is "strongly" dedicated to its buffer, that | |
1812 | is the value returned by `window-dedicated-p' is t. */) | |
5842a27b | 1813 | (Lisp_Object window) |
7ab12479 | 1814 | { |
52162052 | 1815 | return decode_live_window (window)->dedicated; |
7ab12479 JB |
1816 | } |
1817 | ||
d207b766 RS |
1818 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1819 | Sset_window_dedicated_p, 2, 2, 0, | |
d653c8cc | 1820 | doc: /* Mark WINDOW as dedicated according to FLAG. |
496e208e MR |
1821 | WINDOW must be a live window and defaults to the selected one. FLAG |
1822 | non-nil means mark WINDOW as dedicated to its buffer. FLAG nil means | |
1823 | mark WINDOW as non-dedicated. Return FLAG. | |
d653c8cc | 1824 | |
7bfac547 MR |
1825 | When a window is dedicated to its buffer, `display-buffer' will refrain |
1826 | from displaying another buffer in it. `get-lru-window' and | |
1827 | `get-largest-window' treat dedicated windows specially. | |
496e208e MR |
1828 | `delete-windows-on', `replace-buffer-in-windows', `quit-window', |
1829 | `quit-restore-window' and `kill-buffer' can delete a dedicated window | |
1830 | and the containing frame. | |
7bfac547 MR |
1831 | |
1832 | As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to | |
1833 | its buffer. Functions like `set-window-buffer' may change the buffer | |
1834 | displayed by a window, unless that window is strongly dedicated to its | |
1835 | buffer. If and when `set-window-buffer' displays another buffer in a | |
496e208e | 1836 | window, it also makes sure that the window is no more dedicated. */) |
5842a27b | 1837 | (Lisp_Object window, Lisp_Object flag) |
7ab12479 | 1838 | { |
e8c17b81 PE |
1839 | wset_dedicated (decode_live_window (window), flag); |
1840 | return flag; | |
7ab12479 JB |
1841 | } |
1842 | ||
496e208e MR |
1843 | DEFUN ("window-prev-buffers", Fwindow_prev_buffers, Swindow_prev_buffers, |
1844 | 0, 1, 0, | |
1845 | doc: /* Return buffers previously shown in WINDOW. | |
1846 | WINDOW must be a live window and defaults to the selected one. | |
1847 | ||
94e0933e CY |
1848 | The return value is a list of elements (BUFFER WINDOW-START POS), |
1849 | where BUFFER is a buffer, WINDOW-START is the start position of the | |
1850 | window for that buffer, and POS is a window-specific point value. */) | |
496e208e MR |
1851 | (Lisp_Object window) |
1852 | { | |
52162052 | 1853 | return decode_live_window (window)->prev_buffers; |
496e208e MR |
1854 | } |
1855 | ||
1856 | DEFUN ("set-window-prev-buffers", Fset_window_prev_buffers, | |
1857 | Sset_window_prev_buffers, 2, 2, 0, | |
1858 | doc: /* Set WINDOW's previous buffers to PREV-BUFFERS. | |
94e0933e | 1859 | WINDOW must be a live window and defaults to the selected one. |
496e208e | 1860 | |
94e0933e CY |
1861 | PREV-BUFFERS should be a list of elements (BUFFER WINDOW-START POS), |
1862 | where BUFFER is a buffer, WINDOW-START is the start position of the | |
1863 | window for that buffer, and POS is a window-specific point value. */) | |
496e208e MR |
1864 | (Lisp_Object window, Lisp_Object prev_buffers) |
1865 | { | |
e8c17b81 PE |
1866 | wset_prev_buffers (decode_live_window (window), prev_buffers); |
1867 | return prev_buffers; | |
496e208e MR |
1868 | } |
1869 | ||
1870 | DEFUN ("window-next-buffers", Fwindow_next_buffers, Swindow_next_buffers, | |
1871 | 0, 1, 0, | |
1872 | doc: /* Return list of buffers recently re-shown in WINDOW. | |
1873 | WINDOW must be a live window and defaults to the selected one. */) | |
1874 | (Lisp_Object window) | |
1875 | { | |
52162052 | 1876 | return decode_live_window (window)->next_buffers; |
496e208e MR |
1877 | } |
1878 | ||
1879 | DEFUN ("set-window-next-buffers", Fset_window_next_buffers, | |
1880 | Sset_window_next_buffers, 2, 2, 0, | |
1881 | doc: /* Set WINDOW's next buffers to NEXT-BUFFERS. | |
94e0933e CY |
1882 | WINDOW must be a live window and defaults to the selected one. |
1883 | NEXT-BUFFERS should be a list of buffers. */) | |
496e208e MR |
1884 | (Lisp_Object window, Lisp_Object next_buffers) |
1885 | { | |
e8c17b81 PE |
1886 | wset_next_buffers (decode_live_window (window), next_buffers); |
1887 | return next_buffers; | |
496e208e | 1888 | } |
d653c8cc | 1889 | |
cfbb2395 JB |
1890 | DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters, |
1891 | 0, 1, 0, | |
d653c8cc | 1892 | doc: /* Return the parameters of WINDOW and their values. |
52162052 MR |
1893 | WINDOW must be a valid window and defaults to the selected one. The |
1894 | return value is a list of elements of the form (PARAMETER . VALUE). */) | |
5842a27b | 1895 | (Lisp_Object window) |
cfbb2395 | 1896 | { |
52162052 | 1897 | return Fcopy_alist (decode_valid_window (window)->window_parameters); |
cfbb2395 JB |
1898 | } |
1899 | ||
1900 | DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter, | |
1901 | 2, 2, 0, | |
d653c8cc | 1902 | doc: /* Return WINDOW's value for PARAMETER. |
a8c729af | 1903 | WINDOW can be any window and defaults to the selected one. */) |
5842a27b | 1904 | (Lisp_Object window, Lisp_Object parameter) |
cfbb2395 | 1905 | { |
927abf37 JB |
1906 | Lisp_Object result; |
1907 | ||
a8c729af | 1908 | result = Fassq (parameter, decode_any_window (window)->window_parameters); |
927abf37 | 1909 | return CDR_SAFE (result); |
cfbb2395 JB |
1910 | } |
1911 | ||
cfbb2395 JB |
1912 | DEFUN ("set-window-parameter", Fset_window_parameter, |
1913 | Sset_window_parameter, 3, 3, 0, | |
d653c8cc | 1914 | doc: /* Set WINDOW's value of PARAMETER to VALUE. |
a8c729af | 1915 | WINDOW can be any window and defaults to the selected one. |
52162052 | 1916 | Return VALUE. */) |
5842a27b | 1917 | (Lisp_Object window, Lisp_Object parameter, Lisp_Object value) |
cfbb2395 | 1918 | { |
a8c729af | 1919 | register struct window *w = decode_any_window (window); |
cfbb2395 JB |
1920 | Lisp_Object old_alist_elt; |
1921 | ||
d3d50620 | 1922 | old_alist_elt = Fassq (parameter, w->window_parameters); |
12bb3111 | 1923 | if (NILP (old_alist_elt)) |
e8c17b81 PE |
1924 | wset_window_parameters |
1925 | (w, Fcons (Fcons (parameter, value), w->window_parameters)); | |
cfbb2395 JB |
1926 | else |
1927 | Fsetcdr (old_alist_elt, value); | |
927abf37 | 1928 | return value; |
cfbb2395 JB |
1929 | } |
1930 | ||
7ab12479 JB |
1931 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, |
1932 | 0, 1, 0, | |
c85322d0 | 1933 | doc: /* Return the display-table that WINDOW is using. |
52162052 | 1934 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 1935 | (Lisp_Object window) |
7ab12479 | 1936 | { |
52162052 | 1937 | return decode_live_window (window)->display_table; |
7ab12479 JB |
1938 | } |
1939 | ||
5500c422 GM |
1940 | /* Get the display table for use on window W. This is either W's |
1941 | display table or W's buffer's display table. Ignore the specified | |
1942 | tables if they are not valid; if no valid table is specified, | |
1943 | return 0. */ | |
7ab12479 | 1944 | |
319315f1 | 1945 | struct Lisp_Char_Table * |
971de7fb | 1946 | window_display_table (struct window *w) |
7ab12479 | 1947 | { |
c756cdbe GM |
1948 | struct Lisp_Char_Table *dp = NULL; |
1949 | ||
d3d50620 DA |
1950 | if (DISP_TABLE_P (w->display_table)) |
1951 | dp = XCHAR_TABLE (w->display_table); | |
e74aeda8 | 1952 | else if (BUFFERP (w->contents)) |
c756cdbe | 1953 | { |
e74aeda8 | 1954 | struct buffer *b = XBUFFER (w->contents); |
177c0ea7 | 1955 | |
4b4deea2 TT |
1956 | if (DISP_TABLE_P (BVAR (b, display_table))) |
1957 | dp = XCHAR_TABLE (BVAR (b, display_table)); | |
c756cdbe GM |
1958 | else if (DISP_TABLE_P (Vstandard_display_table)) |
1959 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1960 | } | |
171d003c | 1961 | |
c756cdbe | 1962 | return dp; |
7ab12479 JB |
1963 | } |
1964 | ||
3a2712f9 | 1965 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
52162052 MR |
1966 | doc: /* Set WINDOW's display-table to TABLE. |
1967 | WINDOW must be a live window and defaults to the selected one. */) | |
5842a27b | 1968 | (register Lisp_Object window, Lisp_Object table) |
7ab12479 | 1969 | { |
e8c17b81 PE |
1970 | wset_display_table (decode_live_window (window), table); |
1971 | return table; | |
7ab12479 JB |
1972 | } |
1973 | \f | |
562dd5e9 | 1974 | /* Record info on buffer window W is displaying |
7ab12479 | 1975 | when it is about to cease to display that buffer. */ |
dfcf069d | 1976 | static void |
971de7fb | 1977 | unshow_buffer (register struct window *w) |
7ab12479 | 1978 | { |
e74aeda8 DA |
1979 | Lisp_Object buf = w->contents; |
1980 | struct buffer *b = XBUFFER (buf); | |
7ab12479 | 1981 | |
e74aeda8 | 1982 | eassert (b == XMARKER (w->pointm)->buffer); |
7ab12479 | 1983 | |
573f41ab | 1984 | #if 0 |
7ab12479 | 1985 | if (w == XWINDOW (selected_window) |
e74aeda8 | 1986 | || ! EQ (buf, XWINDOW (selected_window)->contents)) |
7ab12479 JB |
1987 | /* Do this except when the selected window's buffer |
1988 | is being removed from some other window. */ | |
573f41ab RS |
1989 | #endif |
1990 | /* last_window_start records the start position that this buffer | |
1991 | had in the last window to be disconnected from it. | |
1992 | Now that this statement is unconditional, | |
1993 | it is possible for the buffer to be displayed in the | |
1994 | selected window, while last_window_start reflects another | |
1995 | window which was recently showing the same buffer. | |
1996 | Some people might say that might be a good thing. Let's see. */ | |
d3d50620 | 1997 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1998 | |
1999 | /* Point in the selected window's buffer | |
2000 | is actually stored in that buffer, and the window's pointm isn't used. | |
2001 | So don't clobber point in that buffer. */ | |
e74aeda8 | 2002 | if (! EQ (buf, XWINDOW (selected_window)->contents) |
c4b6914d MR |
2003 | /* Don't clobber point in current buffer either (this could be |
2004 | useful in connection with bug#12208). | |
2005 | && XBUFFER (buf) != current_buffer */ | |
719eaeb1 | 2006 | /* This line helps to fix Horsley's testbug.el bug. */ |
4b4deea2 TT |
2007 | && !(WINDOWP (BVAR (b, last_selected_window)) |
2008 | && w != XWINDOW (BVAR (b, last_selected_window)) | |
e74aeda8 | 2009 | && EQ (buf, XWINDOW (BVAR (b, last_selected_window))->contents))) |
b73ea88e RS |
2010 | temp_set_point_both (b, |
2011 | clip_to_bounds (BUF_BEGV (b), | |
4c1acb95 | 2012 | marker_position (w->pointm), |
b73ea88e RS |
2013 | BUF_ZV (b)), |
2014 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
d3d50620 | 2015 | marker_byte_position (w->pointm), |
b73ea88e | 2016 | BUF_ZV_BYTE (b))); |
177c0ea7 | 2017 | |
4b4deea2 TT |
2018 | if (WINDOWP (BVAR (b, last_selected_window)) |
2019 | && w == XWINDOW (BVAR (b, last_selected_window))) | |
39eb03f1 | 2020 | bset_last_selected_window (b, Qnil); |
7ab12479 JB |
2021 | } |
2022 | ||
1a13852e MR |
2023 | /* Put NEW into the window structure in place of OLD. SETFLAG zero |
2024 | means change window structure only. Otherwise store geometry and | |
2025 | other settings as well. */ | |
dfcf069d | 2026 | static void |
1a13852e | 2027 | replace_window (Lisp_Object old, Lisp_Object new, int setflag) |
7ab12479 JB |
2028 | { |
2029 | register Lisp_Object tem; | |
1a13852e | 2030 | register struct window *o = XWINDOW (old), *n = XWINDOW (new); |
7ab12479 | 2031 | |
1a13852e MR |
2032 | /* If OLD is its frame's root window, then NEW is the new |
2033 | root window for that frame. */ | |
d3d50620 | 2034 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
f00af5b1 | 2035 | fset_root_window (XFRAME (o->frame), new); |
077288cf | 2036 | |
5f24fa51 DA |
2037 | if (setflag) |
2038 | { | |
2039 | n->left_col = o->left_col; | |
2040 | n->top_line = o->top_line; | |
2041 | n->total_cols = o->total_cols; | |
2042 | n->total_lines = o->total_lines; | |
e8c17b81 PE |
2043 | wset_normal_cols (n, o->normal_cols); |
2044 | wset_normal_cols (o, make_float (1.0)); | |
2045 | wset_normal_lines (n, o->normal_lines); | |
2046 | wset_normal_lines (o, make_float (1.0)); | |
1a13852e MR |
2047 | n->desired_matrix = n->current_matrix = 0; |
2048 | n->vscroll = 0; | |
2049 | memset (&n->cursor, 0, sizeof (n->cursor)); | |
2050 | memset (&n->last_cursor, 0, sizeof (n->last_cursor)); | |
2051 | memset (&n->phys_cursor, 0, sizeof (n->phys_cursor)); | |
2052 | n->phys_cursor_type = -1; | |
2053 | n->phys_cursor_width = -1; | |
2054 | n->must_be_updated_p = 0; | |
2055 | n->pseudo_window_p = 0; | |
e8c17b81 PE |
2056 | wset_window_end_vpos (n, make_number (0)); |
2057 | wset_window_end_pos (n, make_number (0)); | |
9d93ce29 | 2058 | n->window_end_valid = 0; |
1a13852e | 2059 | n->frozen_window_start_p = 0; |
1a13852e MR |
2060 | } |
2061 | ||
d3d50620 | 2062 | tem = o->next; |
e8c17b81 | 2063 | wset_next (n, tem); |
265a9e55 | 2064 | if (!NILP (tem)) |
e8c17b81 | 2065 | wset_prev (XWINDOW (tem), new); |
7ab12479 | 2066 | |
d3d50620 | 2067 | tem = o->prev; |
e8c17b81 | 2068 | wset_prev (n, tem); |
265a9e55 | 2069 | if (!NILP (tem)) |
e8c17b81 | 2070 | wset_next (XWINDOW (tem), new); |
7ab12479 | 2071 | |
d3d50620 | 2072 | tem = o->parent; |
e8c17b81 | 2073 | wset_parent (n, tem); |
e74aeda8 DA |
2074 | if (!NILP (tem) && EQ (XWINDOW (tem)->contents, old)) |
2075 | wset_combination (XWINDOW (tem), XWINDOW (tem)->horizontal, new); | |
1a13852e MR |
2076 | } |
2077 | ||
2078 | /* If window WINDOW and its parent window are iso-combined, merge | |
2079 | WINDOW's children into those of its parent window and mark WINDOW as | |
2080 | deleted. */ | |
2081 | ||
2082 | static void | |
2083 | recombine_windows (Lisp_Object window) | |
2084 | { | |
2085 | struct window *w, *p, *c; | |
2086 | Lisp_Object parent, child; | |
748fa866 | 2087 | bool horflag; |
1a13852e MR |
2088 | |
2089 | w = XWINDOW (window); | |
d3d50620 DA |
2090 | parent = w->parent; |
2091 | if (!NILP (parent) && NILP (w->combination_limit)) | |
1a13852e MR |
2092 | { |
2093 | p = XWINDOW (parent); | |
e74aeda8 DA |
2094 | if (WINDOWP (p->contents) && WINDOWP (w->contents) |
2095 | && p->horizontal == w->horizontal) | |
1a13852e MR |
2096 | /* WINDOW and PARENT are both either a vertical or a horizontal |
2097 | combination. */ | |
2098 | { | |
e74aeda8 DA |
2099 | horflag = WINDOW_HORIZONTAL_COMBINATION_P (w); |
2100 | child = w->contents; | |
1a13852e MR |
2101 | c = XWINDOW (child); |
2102 | ||
2103 | /* Splice WINDOW's children into its parent's children and | |
2104 | assign new normal sizes. */ | |
d3d50620 | 2105 | if (NILP (w->prev)) |
e74aeda8 | 2106 | wset_combination (p, horflag, child); |
1a13852e MR |
2107 | else |
2108 | { | |
e8c17b81 PE |
2109 | wset_prev (c, w->prev); |
2110 | wset_next (XWINDOW (w->prev), child); | |
1a13852e MR |
2111 | } |
2112 | ||
2113 | while (c) | |
2114 | { | |
e8c17b81 | 2115 | wset_parent (c, parent); |
1a13852e MR |
2116 | |
2117 | if (horflag) | |
e8c17b81 | 2118 | wset_normal_cols (c, |
5f24fa51 DA |
2119 | make_float ((double) c->total_cols |
2120 | / (double) p->total_cols)); | |
1a13852e | 2121 | else |
e8c17b81 | 2122 | wset_normal_lines (c, |
5f24fa51 DA |
2123 | make_float ((double) c->total_lines |
2124 | / (double) p->total_lines)); | |
1a13852e | 2125 | |
d3d50620 | 2126 | if (NILP (c->next)) |
1a13852e | 2127 | { |
d3d50620 | 2128 | if (!NILP (w->next)) |
1a13852e | 2129 | { |
e8c17b81 PE |
2130 | wset_next (c, w->next); |
2131 | wset_prev (XWINDOW (c->next), child); | |
1a13852e MR |
2132 | } |
2133 | ||
2134 | c = 0; | |
2135 | } | |
2136 | else | |
2137 | { | |
d3d50620 | 2138 | child = c->next; |
1a13852e MR |
2139 | c = XWINDOW (child); |
2140 | } | |
2141 | } | |
7ab12479 | 2142 | |
1a13852e | 2143 | /* WINDOW can be deleted now. */ |
e74aeda8 | 2144 | wset_combination (w, 0, Qnil); |
1a13852e MR |
2145 | } |
2146 | } | |
7ab12479 | 2147 | } |
6198ccd0 MR |
2148 | |
2149 | /* If WINDOW can be deleted, delete it. */ | |
4475bec4 | 2150 | static void |
6198ccd0 MR |
2151 | delete_deletable_window (Lisp_Object window) |
2152 | { | |
2153 | if (!NILP (call1 (Qwindow_deletable_p, window))) | |
2154 | call1 (Qdelete_window, window); | |
2155 | } | |
1a13852e | 2156 | \f |
67492200 GM |
2157 | /*********************************************************************** |
2158 | Window List | |
2159 | ***********************************************************************/ | |
2160 | ||
f95464e4 GM |
2161 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
2162 | pointer. This is a callback function for foreach_window, used in | |
496e208e | 2163 | the window_list function. */ |
67492200 GM |
2164 | |
2165 | static int | |
971de7fb | 2166 | add_window_to_list (struct window *w, void *user_data) |
67492200 | 2167 | { |
f95464e4 | 2168 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
2169 | Lisp_Object window; |
2170 | XSETWINDOW (window, w); | |
212116d6 | 2171 | *list = Fcons (window, *list); |
67492200 GM |
2172 | return 1; |
2173 | } | |
2174 | ||
2175 | ||
2176 | /* Return a list of all windows, for use by next_window. If | |
2177 | Vwindow_list is a list, return that list. Otherwise, build a new | |
2178 | list, cache it in Vwindow_list, and return that. */ | |
2179 | ||
2180 | static Lisp_Object | |
971de7fb | 2181 | window_list (void) |
67492200 GM |
2182 | { |
2183 | if (!CONSP (Vwindow_list)) | |
2184 | { | |
5b04e9f9 | 2185 | Lisp_Object tail, frame; |
212116d6 | 2186 | |
67492200 | 2187 | Vwindow_list = Qnil; |
5b04e9f9 | 2188 | FOR_EACH_FRAME (tail, frame) |
212116d6 GM |
2189 | { |
2190 | Lisp_Object args[2]; | |
2191 | ||
2192 | /* We are visiting windows in canonical order, and add | |
2193 | new windows at the front of args[1], which means we | |
2194 | have to reverse this list at the end. */ | |
2195 | args[1] = Qnil; | |
5b04e9f9 | 2196 | foreach_window (XFRAME (frame), add_window_to_list, &args[1]); |
212116d6 GM |
2197 | args[0] = Vwindow_list; |
2198 | args[1] = Fnreverse (args[1]); | |
2199 | Vwindow_list = Fnconc (2, args); | |
2200 | } | |
67492200 | 2201 | } |
177c0ea7 | 2202 | |
67492200 GM |
2203 | return Vwindow_list; |
2204 | } | |
2205 | ||
2206 | ||
118ea242 GM |
2207 | /* Value is non-zero if WINDOW satisfies the constraints given by |
2208 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 2209 | |
118ea242 GM |
2210 | MINIBUF t means WINDOW may be minibuffer windows. |
2211 | `lambda' means WINDOW may not be a minibuffer window. | |
2212 | a window means a specific minibuffer window | |
67492200 | 2213 | |
118ea242 GM |
2214 | ALL_FRAMES t means search all frames, |
2215 | nil means search just current frame, | |
aa248733 MS |
2216 | `visible' means search just visible frames on the |
2217 | current terminal, | |
2218 | 0 means search visible and iconified frames on the | |
2219 | current terminal, | |
118ea242 GM |
2220 | a window means search the frame that window belongs to, |
2221 | a frame means consider windows on that frame, only. */ | |
67492200 | 2222 | |
d7e6881a DA |
2223 | static bool |
2224 | candidate_window_p (Lisp_Object window, Lisp_Object owindow, | |
2225 | Lisp_Object minibuf, Lisp_Object all_frames) | |
67492200 GM |
2226 | { |
2227 | struct window *w = XWINDOW (window); | |
d3d50620 | 2228 | struct frame *f = XFRAME (w->frame); |
d7e6881a | 2229 | bool candidate_p = 1; |
67492200 | 2230 | |
e74aeda8 | 2231 | if (!BUFFERP (w->contents)) |
67492200 GM |
2232 | candidate_p = 0; |
2233 | else if (MINI_WINDOW_P (w) | |
2234 | && (EQ (minibuf, Qlambda) | |
2235 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
2236 | { | |
2237 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
2238 | If it is a window, consider only that one. */ | |
2239 | candidate_p = 0; | |
2240 | } | |
118ea242 GM |
2241 | else if (EQ (all_frames, Qt)) |
2242 | candidate_p = 1; | |
67492200 | 2243 | else if (NILP (all_frames)) |
118ea242 | 2244 | { |
a54e2c05 | 2245 | eassert (WINDOWP (owindow)); |
d3d50620 | 2246 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); |
118ea242 | 2247 | } |
67492200 GM |
2248 | else if (EQ (all_frames, Qvisible)) |
2249 | { | |
de509a60 | 2250 | candidate_p = FRAME_VISIBLE_P (f) |
d3d50620 | 2251 | && (FRAME_TERMINAL (XFRAME (w->frame)) |
de509a60 SM |
2252 | == FRAME_TERMINAL (XFRAME (selected_frame))); |
2253 | ||
67492200 GM |
2254 | } |
2255 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
2256 | { | |
ca2d5566 SM |
2257 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
2258 | #ifdef HAVE_X_WINDOWS | |
2259 | /* Yuck!! If we've just created the frame and the | |
2260 | window-manager requested the user to place it | |
2261 | manually, the window may still not be considered | |
2262 | `visible'. I'd argue it should be at least | |
2263 | something like `iconified', but don't know how to do | |
2264 | that yet. --Stef */ | |
2265 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
2266 | && !f->output_data.x->has_been_visible) | |
2267 | #endif | |
de509a60 | 2268 | ) |
d3d50620 | 2269 | && (FRAME_TERMINAL (XFRAME (w->frame)) |
de509a60 | 2270 | == FRAME_TERMINAL (XFRAME (selected_frame))); |
67492200 | 2271 | } |
67492200 GM |
2272 | else if (WINDOWP (all_frames)) |
2273 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
d3d50620 DA |
2274 | || EQ (XWINDOW (all_frames)->frame, w->frame) |
2275 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 | 2276 | else if (FRAMEP (all_frames)) |
d3d50620 | 2277 | candidate_p = EQ (all_frames, w->frame); |
67492200 GM |
2278 | |
2279 | return candidate_p; | |
2280 | } | |
2281 | ||
2282 | ||
2283 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
aa248733 MS |
2284 | Fwindow_list. See candidate_window_p for the meaning of WINDOW, |
2285 | MINIBUF, and ALL_FRAMES. */ | |
67492200 GM |
2286 | |
2287 | static void | |
971de7fb | 2288 | decode_next_window_args (Lisp_Object *window, Lisp_Object *minibuf, Lisp_Object *all_frames) |
67492200 | 2289 | { |
b9e9df47 | 2290 | struct window *w = decode_live_window (*window); |
177c0ea7 | 2291 | |
b6a9e8b1 | 2292 | XSETWINDOW (*window, w); |
67492200 GM |
2293 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
2294 | does. */ | |
2295 | if (NILP (*minibuf)) | |
2296 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
2297 | else if (!EQ (*minibuf, Qt)) | |
2298 | *minibuf = Qlambda; | |
177c0ea7 | 2299 | |
67492200 GM |
2300 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
2301 | => count none of them, or a specific minibuffer window (the | |
2302 | active one) to count. */ | |
2303 | ||
2304 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
2305 | if (NILP (*all_frames)) | |
f00af5b1 | 2306 | *all_frames |
3a45383a | 2307 | = (!EQ (*minibuf, Qlambda) |
b9e9df47 | 2308 | ? FRAME_MINIBUF_WINDOW (XFRAME (w->frame)) |
3a45383a | 2309 | : Qnil); |
67492200 GM |
2310 | else if (EQ (*all_frames, Qvisible)) |
2311 | ; | |
0f8fe9a2 | 2312 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
2313 | ; |
2314 | else if (FRAMEP (*all_frames)) | |
2315 | ; | |
2316 | else if (!EQ (*all_frames, Qt)) | |
2317 | *all_frames = Qnil; | |
67492200 GM |
2318 | } |
2319 | ||
2320 | ||
ab6d1131 | 2321 | /* Return the next or previous window of WINDOW in cyclic ordering |
67492200 GM |
2322 | of windows. NEXT_P non-zero means return the next window. See the |
2323 | documentation string of next-window for the meaning of MINIBUF and | |
2324 | ALL_FRAMES. */ | |
2325 | ||
2326 | static Lisp_Object | |
971de7fb | 2327 | next_window (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames, int next_p) |
67492200 GM |
2328 | { |
2329 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 2330 | |
67492200 GM |
2331 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
2332 | return the first window on the frame. */ | |
2333 | if (FRAMEP (all_frames) | |
d3d50620 | 2334 | && !EQ (all_frames, XWINDOW (window)->frame)) |
67492200 | 2335 | return Fframe_first_window (all_frames); |
177c0ea7 | 2336 | |
212116d6 | 2337 | if (next_p) |
67492200 GM |
2338 | { |
2339 | Lisp_Object list; | |
177c0ea7 | 2340 | |
67492200 GM |
2341 | /* Find WINDOW in the list of all windows. */ |
2342 | list = Fmemq (window, window_list ()); | |
2343 | ||
2344 | /* Scan forward from WINDOW to the end of the window list. */ | |
2345 | if (CONSP (list)) | |
2346 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 2347 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2348 | break; |
2349 | ||
2350 | /* Scan from the start of the window list up to WINDOW. */ | |
2351 | if (!CONSP (list)) | |
2352 | for (list = Vwindow_list; | |
2353 | CONSP (list) && !EQ (XCAR (list), window); | |
2354 | list = XCDR (list)) | |
118ea242 | 2355 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2356 | break; |
2357 | ||
2358 | if (CONSP (list)) | |
2359 | window = XCAR (list); | |
2360 | } | |
2361 | else | |
2362 | { | |
2363 | Lisp_Object candidate, list; | |
177c0ea7 | 2364 | |
67492200 GM |
2365 | /* Scan through the list of windows for candidates. If there are |
2366 | candidate windows in front of WINDOW, the last one of these | |
2367 | is the one we want. If there are candidates following WINDOW | |
2368 | in the list, again the last one of these is the one we want. */ | |
2369 | candidate = Qnil; | |
2370 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
2371 | { | |
2372 | if (EQ (XCAR (list), window)) | |
2373 | { | |
2374 | if (WINDOWP (candidate)) | |
2375 | break; | |
2376 | } | |
118ea242 GM |
2377 | else if (candidate_window_p (XCAR (list), window, minibuf, |
2378 | all_frames)) | |
67492200 GM |
2379 | candidate = XCAR (list); |
2380 | } | |
2381 | ||
2382 | if (WINDOWP (candidate)) | |
2383 | window = candidate; | |
2384 | } | |
2385 | ||
2386 | return window; | |
2387 | } | |
7ab12479 | 2388 | |
7ab12479 | 2389 | |
a7ca3326 | 2390 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
a9b9b7f5 | 2391 | doc: /* Return live window after WINDOW in the cyclic ordering of windows. |
87e68db4 | 2392 | WINDOW must be a live window and defaults to the selected one. The |
9397e56f MR |
2393 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to |
2394 | consider. | |
2395 | ||
2396 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2397 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2398 | even if the minibuffer is not active. Any other value means do not | |
2399 | consider the minibuffer window even if the minibuffer is active. | |
2400 | ||
2401 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2402 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2403 | minibuffer counts, consider all windows on all frames that share that | |
2404 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2405 | meanings: | |
2406 | ||
2407 | - t means consider all windows on all existing frames. | |
2408 | ||
2409 | - `visible' means consider all windows on all visible frames. | |
2410 | ||
2411 | - 0 (the number zero) means consider all windows on all visible and | |
2412 | iconified frames. | |
2413 | ||
2414 | - A frame means consider all windows on that frame only. | |
ab6d1131 | 2415 | |
ab6d1131 | 2416 | Anything else means consider all windows on WINDOW's frame and no |
9397e56f | 2417 | others. |
fdb82f93 PJ |
2418 | |
2419 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
2420 | `next-window' to iterate through the entire cycle of acceptable | |
2421 | windows, eventually ending up back at the window you started with. | |
2422 | `previous-window' traverses the same cycle, in the reverse order. */) | |
5842a27b | 2423 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2424 | { |
67492200 | 2425 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
2426 | } |
2427 | ||
67492200 | 2428 | |
26f6279d | 2429 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
a9b9b7f5 | 2430 | doc: /* Return live window before WINDOW in the cyclic ordering of windows. |
9397e56f MR |
2431 | WINDOW must be a live window and defaults to the selected one. The |
2432 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to | |
2433 | consider. | |
2434 | ||
2435 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2436 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2437 | even if the minibuffer is not active. Any other value means do not | |
2438 | consider the minibuffer window even if the minibuffer is active. | |
2439 | ||
2440 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2441 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2442 | minibuffer counts, consider all windows on all frames that share that | |
2443 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2444 | meanings: | |
2445 | ||
2446 | - t means consider all windows on all existing frames. | |
2447 | ||
2448 | - `visible' means consider all windows on all visible frames. | |
2449 | ||
2450 | - 0 (the number zero) means consider all windows on all visible and | |
2451 | iconified frames. | |
2452 | ||
2453 | - A frame means consider all windows on that frame only. | |
2454 | ||
2455 | Anything else means consider all windows on WINDOW's frame and no | |
2456 | others. | |
ab6d1131 MR |
2457 | |
2458 | If you use consistent values for MINIBUF and ALL-FRAMES, you can | |
2459 | use `previous-window' to iterate through the entire cycle of | |
2460 | acceptable windows, eventually ending up back at the window you | |
2461 | started with. `next-window' traverses the same cycle, in the | |
2462 | reverse order. */) | |
5842a27b | 2463 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2464 | { |
67492200 | 2465 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2466 | } |
2467 | ||
67492200 | 2468 | |
ab6d1131 | 2469 | /* Return a list of windows in cyclic ordering. Arguments are like |
cd2904bd GM |
2470 | for `next-window'. */ |
2471 | ||
2472 | static Lisp_Object | |
971de7fb | 2473 | window_list_1 (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 | 2474 | { |
403de3b4 | 2475 | Lisp_Object tail, list, rest; |
67492200 GM |
2476 | |
2477 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2478 | list = Qnil; | |
177c0ea7 | 2479 | |
67492200 | 2480 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2481 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2482 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2483 | |
403de3b4 RS |
2484 | /* Rotate the list to start with WINDOW. */ |
2485 | list = Fnreverse (list); | |
2486 | rest = Fmemq (window, list); | |
2487 | if (!NILP (rest) && !EQ (rest, list)) | |
2488 | { | |
1725a7c9 | 2489 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2490 | ; |
2491 | XSETCDR (tail, Qnil); | |
2492 | list = nconc2 (rest, list); | |
2493 | } | |
2494 | return list; | |
67492200 GM |
2495 | } |
2496 | ||
2497 | ||
abde8f8c MR |
2498 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, |
2499 | doc: /* Return a list of windows on FRAME, starting with WINDOW. | |
2500 | FRAME nil or omitted means use the selected frame. | |
49745b39 | 2501 | WINDOW nil or omitted means use the window selected within FRAME. |
abde8f8c MR |
2502 | MINIBUF t means include the minibuffer window, even if it isn't active. |
2503 | MINIBUF nil or omitted means include the minibuffer window only | |
2504 | if it's active. | |
2505 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2506 | (Lisp_Object frame, Lisp_Object minibuf, Lisp_Object window) | |
2507 | { | |
2508 | if (NILP (window)) | |
e69b0960 | 2509 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
abde8f8c MR |
2510 | CHECK_WINDOW (window); |
2511 | if (NILP (frame)) | |
2512 | frame = selected_frame; | |
2513 | ||
d3d50620 | 2514 | if (!EQ (frame, XWINDOW (window)->frame)) |
abde8f8c MR |
2515 | error ("Window is on a different frame"); |
2516 | ||
2517 | return window_list_1 (window, minibuf, frame); | |
2518 | } | |
2519 | ||
2520 | ||
1a13852e MR |
2521 | DEFUN ("window-list-1", Fwindow_list_1, Swindow_list_1, 0, 3, 0, |
2522 | doc: /* Return a list of all live windows. | |
2523 | WINDOW specifies the first window to list and defaults to the selected | |
2524 | window. | |
2525 | ||
2526 | Optional argument MINIBUF nil or omitted means consider the minibuffer | |
2527 | window only if the minibuffer is active. MINIBUF t means consider the | |
2528 | minibuffer window even if the minibuffer is not active. Any other value | |
2529 | means do not consider the minibuffer window even if the minibuffer is | |
2530 | active. | |
2531 | ||
2532 | Optional argument ALL-FRAMES nil or omitted means consider all windows | |
2533 | on WINDOW's frame, plus the minibuffer window if specified by the | |
2534 | MINIBUF argument. If the minibuffer counts, consider all windows on all | |
2535 | frames that share that minibuffer too. The following non-nil values of | |
2536 | ALL-FRAMES have special meanings: | |
2537 | ||
2538 | - t means consider all windows on all existing frames. | |
2539 | ||
2540 | - `visible' means consider all windows on all visible frames. | |
2541 | ||
2542 | - 0 (the number zero) means consider all windows on all visible and | |
2543 | iconified frames. | |
2544 | ||
2545 | - A frame means consider all windows on that frame only. | |
2546 | ||
2547 | Anything else means consider all windows on WINDOW's frame and no | |
2548 | others. | |
2549 | ||
2550 | If WINDOW is not on the list of windows returned, some other window will | |
8350f087 | 2551 | be listed first but no error is signaled. */) |
1a13852e MR |
2552 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
2553 | { | |
2554 | return window_list_1 (window, minibuf, all_frames); | |
2555 | } | |
7ab12479 JB |
2556 | \f |
2557 | /* Look at all windows, performing an operation specified by TYPE | |
2558 | with argument OBJ. | |
75d8f668 | 2559 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2560 | Qnil, look at just the selected frame; |
89bca612 | 2561 | Qvisible, look at visible frames; |
75d8f668 | 2562 | a frame, just look at windows on that frame. |
85fe3b5e | 2563 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2564 | |
2565 | enum window_loop | |
2566 | { | |
2567 | WINDOW_LOOP_UNUSED, | |
9397e56f MR |
2568 | GET_BUFFER_WINDOW, /* Arg is buffer */ |
2569 | REPLACE_BUFFER_IN_WINDOWS_SAFELY, /* Arg is buffer */ | |
2570 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ | |
e74aeda8 | 2571 | CHECK_ALL_WINDOWS /* Arg is ignored */ |
7ab12479 JB |
2572 | }; |
2573 | ||
2574 | static Lisp_Object | |
971de7fb | 2575 | window_loop (enum window_loop type, Lisp_Object obj, int mini, Lisp_Object frames) |
7ab12479 | 2576 | { |
118ea242 | 2577 | Lisp_Object window, windows, best_window, frame_arg; |
9397e56f | 2578 | int frame_best_window_flag = 0; |
118ea242 | 2579 | struct frame *f; |
ffdc852d | 2580 | struct gcpro gcpro1; |
177c0ea7 | 2581 | |
44fa5b1e JB |
2582 | /* If we're only looping through windows on a particular frame, |
2583 | frame points to that frame. If we're looping through windows | |
2584 | on all frames, frame is 0. */ | |
2585 | if (FRAMEP (frames)) | |
118ea242 | 2586 | f = XFRAME (frames); |
44fa5b1e | 2587 | else if (NILP (frames)) |
118ea242 | 2588 | f = SELECTED_FRAME (); |
7ab12479 | 2589 | else |
118ea242 | 2590 | f = NULL; |
177c0ea7 | 2591 | |
118ea242 | 2592 | if (f) |
89bca612 | 2593 | frame_arg = Qlambda; |
0f8fe9a2 | 2594 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2595 | frame_arg = frames; |
89bca612 RS |
2596 | else if (EQ (frames, Qvisible)) |
2597 | frame_arg = frames; | |
118ea242 GM |
2598 | else |
2599 | frame_arg = Qt; | |
7ab12479 | 2600 | |
89bca612 RS |
2601 | /* frame_arg is Qlambda to stick to one frame, |
2602 | Qvisible to consider all visible frames, | |
2603 | or Qt otherwise. */ | |
2604 | ||
7ab12479 | 2605 | /* Pick a window to start with. */ |
017b2bad | 2606 | if (WINDOWP (obj)) |
118ea242 GM |
2607 | window = obj; |
2608 | else if (f) | |
2609 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2610 | else |
118ea242 | 2611 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2612 | |
cd2904bd | 2613 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2614 | GCPRO1 (windows); |
7ab12479 | 2615 | best_window = Qnil; |
118ea242 | 2616 | |
e67a1dea | 2617 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2618 | { |
118ea242 | 2619 | struct window *w; |
177c0ea7 | 2620 | |
118ea242 GM |
2621 | window = XCAR (windows); |
2622 | w = XWINDOW (window); | |
177c0ea7 | 2623 | |
118ea242 GM |
2624 | /* Note that we do not pay attention here to whether the frame |
2625 | is visible, since Fwindow_list skips non-visible frames if | |
2626 | that is desired, under the control of frame_arg. */ | |
2627 | if (!MINI_WINDOW_P (w) | |
9397e56f MR |
2628 | /* For REPLACE_BUFFER_IN_WINDOWS_SAFELY, we must always |
2629 | consider all windows. */ | |
2630 | || type == REPLACE_BUFFER_IN_WINDOWS_SAFELY | |
7ab12479 JB |
2631 | || (mini && minibuf_level > 0)) |
2632 | switch (type) | |
2633 | { | |
2634 | case GET_BUFFER_WINDOW: | |
e74aeda8 | 2635 | if (EQ (w->contents, obj) |
9397e56f MR |
2636 | /* Don't find any minibuffer window except the one that |
2637 | is currently in use. */ | |
2638 | && (MINI_WINDOW_P (w) ? EQ (window, minibuf_window) : 1)) | |
118ea242 | 2639 | { |
9397e56f MR |
2640 | if (EQ (window, selected_window)) |
2641 | /* Preferably return the selected window. */ | |
ca2d5566 | 2642 | RETURN_UNGCPRO (window); |
d3d50620 | 2643 | else if (EQ (XWINDOW (window)->frame, selected_frame) |
9397e56f MR |
2644 | && !frame_best_window_flag) |
2645 | /* Prefer windows on the current frame (but don't | |
2646 | choose another one if we have one already). */ | |
118ea242 | 2647 | { |
9397e56f MR |
2648 | best_window = window; |
2649 | frame_best_window_flag = 1; | |
7ab12479 | 2650 | } |
9397e56f MR |
2651 | else if (NILP (best_window)) |
2652 | best_window = window; | |
7ab12479 JB |
2653 | } |
2654 | break; | |
2655 | ||
9397e56f MR |
2656 | case REPLACE_BUFFER_IN_WINDOWS_SAFELY: |
2657 | /* We could simply check whether the buffer shown by window | |
2658 | is live, and show another buffer in case it isn't. */ | |
e74aeda8 | 2659 | if (EQ (w->contents, obj)) |
7ab12479 | 2660 | { |
9397e56f | 2661 | /* Undedicate WINDOW. */ |
e8c17b81 | 2662 | wset_dedicated (w, Qnil); |
9397e56f MR |
2663 | /* Make WINDOW show the buffer returned by |
2664 | other_buffer_safely, don't run any hooks. */ | |
2665 | set_window_buffer | |
e74aeda8 | 2666 | (window, other_buffer_safely (w->contents), 0, 0); |
9397e56f MR |
2667 | /* If WINDOW is the selected window, make its buffer |
2668 | current. But do so only if the window shows the | |
2669 | current buffer (Bug#6454). */ | |
2670 | if (EQ (window, selected_window) | |
e74aeda8 DA |
2671 | && XBUFFER (w->contents) == current_buffer) |
2672 | Fset_buffer (w->contents); | |
7ab12479 JB |
2673 | } |
2674 | break; | |
3f8ab7bd | 2675 | |
6b61353c | 2676 | case REDISPLAY_BUFFER_WINDOWS: |
e74aeda8 | 2677 | if (EQ (w->contents, obj)) |
6b61353c KH |
2678 | { |
2679 | mark_window_display_accurate (window, 0); | |
c98ff5dd | 2680 | w->update_mode_line = 1; |
6b61353c KH |
2681 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; |
2682 | ++update_mode_lines; | |
2683 | best_window = window; | |
2684 | } | |
2685 | break; | |
2686 | ||
e74aeda8 DA |
2687 | /* Check for a leaf window that has a killed buffer |
2688 | or broken markers. */ | |
3f8ab7bd | 2689 | case CHECK_ALL_WINDOWS: |
e74aeda8 DA |
2690 | if (BUFFERP (w->contents)) |
2691 | { | |
2692 | struct buffer *b = XBUFFER (w->contents); | |
2693 | ||
2694 | if (!BUFFER_LIVE_P (b)) | |
2695 | emacs_abort (); | |
2696 | if (!MARKERP (w->start) || XMARKER (w->start)->buffer != b) | |
2697 | emacs_abort (); | |
2698 | if (!MARKERP (w->pointm) || XMARKER (w->pointm)->buffer != b) | |
2699 | emacs_abort (); | |
2700 | } | |
118ea242 | 2701 | break; |
6bbd7a29 GM |
2702 | |
2703 | case WINDOW_LOOP_UNUSED: | |
2704 | break; | |
7ab12479 | 2705 | } |
7ab12479 | 2706 | } |
7ab12479 | 2707 | |
118ea242 | 2708 | UNGCPRO; |
7ab12479 | 2709 | return best_window; |
37962e60 | 2710 | } |
605be8af | 2711 | |
3f8ab7bd RS |
2712 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2713 | ||
e3b27b31 | 2714 | extern void check_all_windows (void) EXTERNALLY_VISIBLE; |
233a4a2c | 2715 | void |
971de7fb | 2716 | check_all_windows (void) |
3f8ab7bd RS |
2717 | { |
2718 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2719 | } | |
2720 | ||
a7ca3326 | 2721 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 0, 2, 0, |
fec89261 | 2722 | doc: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none. |
496e208e MR |
2723 | BUFFER-OR-NAME may be a buffer or a buffer name and defaults to |
2724 | the current buffer. | |
2725 | ||
2726 | The optional argument ALL-FRAMES specifies the frames to consider: | |
2727 | ||
2728 | - t means consider all windows on all existing frames. | |
2729 | ||
2730 | - `visible' means consider all windows on all visible frames. | |
2731 | ||
2732 | - 0 (the number zero) means consider all windows on all visible | |
2733 | and iconified frames. | |
2734 | ||
2735 | - A frame means consider all windows on that frame only. | |
2736 | ||
2737 | Any other value of ALL-FRAMES means consider all windows on the | |
2738 | selected frame and no others. */) | |
2739 | (Lisp_Object buffer_or_name, Lisp_Object all_frames) | |
7ab12479 | 2740 | { |
fec89261 MR |
2741 | Lisp_Object buffer; |
2742 | ||
2743 | if (NILP (buffer_or_name)) | |
2744 | buffer = Fcurrent_buffer (); | |
2745 | else | |
2746 | buffer = Fget_buffer (buffer_or_name); | |
2747 | ||
017b2bad | 2748 | if (BUFFERP (buffer)) |
496e208e | 2749 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, all_frames); |
7ab12479 JB |
2750 | else |
2751 | return Qnil; | |
2752 | } | |
2753 | ||
4b66faf3 | 2754 | static Lisp_Object |
1a13852e MR |
2755 | resize_root_window (Lisp_Object window, Lisp_Object delta, Lisp_Object horizontal, Lisp_Object ignore) |
2756 | { | |
5386012d | 2757 | return call4 (Qwindow_resize_root_window, window, delta, horizontal, ignore); |
1a13852e MR |
2758 | } |
2759 | ||
2760 | ||
2761 | DEFUN ("delete-other-windows-internal", Fdelete_other_windows_internal, | |
2762 | Sdelete_other_windows_internal, 0, 2, "", | |
2763 | doc: /* Make WINDOW fill its frame. | |
52162052 MR |
2764 | Only the frame WINDOW is on is affected. WINDOW must be a valid window |
2765 | and defaults to the selected one. | |
1a13852e | 2766 | |
be7f5545 MR |
2767 | Optional argument ROOT, if non-nil, must specify an internal window such |
2768 | that WINDOW is in its window subtree. If this is the case, replace ROOT | |
2769 | by WINDOW and leave alone any windows not part of ROOT's subtree. | |
1a13852e MR |
2770 | |
2771 | When WINDOW is live try to reduce display jumps by keeping the text | |
2772 | previously visible in WINDOW in the same place on the frame. Doing this | |
2773 | depends on the value of (window-start WINDOW), so if calling this | |
2774 | function in a program gives strange scrolling, make sure the | |
2775 | window-start value is reasonable when this function is called. */) | |
2776 | (Lisp_Object window, Lisp_Object root) | |
2777 | { | |
2778 | struct window *w, *r, *s; | |
2779 | struct frame *f; | |
46a4ce9e | 2780 | Lisp_Object sibling, pwindow, swindow IF_LINT (= Qnil), delta; |
c54aa166 | 2781 | ptrdiff_t startpos IF_LINT (= 0), startbyte IF_LINT (= 0); |
46a4ce9e | 2782 | int top IF_LINT (= 0), new_top, resize_failed; |
1a13852e | 2783 | |
52162052 | 2784 | w = decode_valid_window (window); |
1a13852e | 2785 | XSETWINDOW (window, w); |
d3d50620 | 2786 | f = XFRAME (w->frame); |
1a13852e MR |
2787 | |
2788 | if (NILP (root)) | |
2789 | /* ROOT is the frame's root window. */ | |
2790 | { | |
2791 | root = FRAME_ROOT_WINDOW (f); | |
2792 | r = XWINDOW (root); | |
2793 | } | |
2794 | else | |
2795 | /* ROOT must be an ancestor of WINDOW. */ | |
2796 | { | |
52162052 | 2797 | r = decode_valid_window (root); |
d3d50620 | 2798 | pwindow = XWINDOW (window)->parent; |
1a13852e MR |
2799 | while (!NILP (pwindow)) |
2800 | if (EQ (pwindow, root)) | |
2801 | break; | |
2802 | else | |
d3d50620 | 2803 | pwindow = XWINDOW (pwindow)->parent; |
1a13852e MR |
2804 | if (!EQ (pwindow, root)) |
2805 | error ("Specified root is not an ancestor of specified window"); | |
2806 | } | |
2807 | ||
2808 | if (EQ (window, root)) | |
2809 | /* A noop. */ | |
2810 | return Qnil; | |
2811 | /* I don't understand the "top > 0" part below. If we deal with a | |
2812 | standalone minibuffer it would have been caught by the preceding | |
2813 | test. */ | |
2814 | else if (MINI_WINDOW_P (w)) /* && top > 0) */ | |
2815 | error ("Can't expand minibuffer to full frame"); | |
2816 | ||
e74aeda8 | 2817 | if (BUFFERP (w->contents)) |
1a13852e | 2818 | { |
d3d50620 | 2819 | startpos = marker_position (w->start); |
c54aa166 | 2820 | startbyte = marker_byte_position (w->start); |
1a13852e MR |
2821 | top = WINDOW_TOP_EDGE_LINE (w) |
2822 | - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2823 | /* Make sure WINDOW is the frame's selected window. */ | |
2824 | if (!EQ (window, FRAME_SELECTED_WINDOW (f))) | |
2825 | { | |
d3d50620 | 2826 | if (EQ (selected_frame, w->frame)) |
1a13852e MR |
2827 | Fselect_window (window, Qnil); |
2828 | else | |
f00af5b1 | 2829 | fset_selected_window (f, window); |
1a13852e MR |
2830 | } |
2831 | } | |
2832 | else | |
2833 | { | |
be7f5545 MR |
2834 | /* See if the frame's selected window is a part of the window |
2835 | subtree rooted at WINDOW, by finding all the selected window's | |
2836 | parents and comparing each one with WINDOW. If it isn't we | |
2837 | need a new selected window for this frame. */ | |
1a13852e MR |
2838 | swindow = FRAME_SELECTED_WINDOW (f); |
2839 | while (1) | |
2840 | { | |
2841 | pwindow = swindow; | |
2842 | while (!NILP (pwindow) && !EQ (window, pwindow)) | |
d3d50620 | 2843 | pwindow = XWINDOW (pwindow)->parent; |
1a13852e MR |
2844 | |
2845 | if (EQ (window, pwindow)) | |
2846 | /* If WINDOW is an ancestor of SWINDOW, then SWINDOW is ok | |
2847 | as the new selected window. */ | |
2848 | break; | |
2849 | else | |
2850 | /* Else try the previous window of SWINDOW. */ | |
2851 | swindow = Fprevious_window (swindow, Qlambda, Qnil); | |
2852 | } | |
2853 | ||
2854 | if (!EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
2855 | { | |
d3d50620 | 2856 | if (EQ (selected_frame, w->frame)) |
1a13852e MR |
2857 | Fselect_window (swindow, Qnil); |
2858 | else | |
f00af5b1 | 2859 | fset_selected_window (f, swindow); |
1a13852e MR |
2860 | } |
2861 | } | |
2862 | ||
4d7e6e51 | 2863 | block_input (); |
4c5501e9 EZ |
2864 | if (!FRAME_INITIAL_P (f)) |
2865 | { | |
2866 | Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f); | |
2867 | ||
2868 | /* We are going to free the glyph matrices of WINDOW, and with | |
2869 | that we might lose any information about glyph rows that have | |
2870 | some of their glyphs highlighted in mouse face. (These rows | |
2871 | are marked with a non-zero mouse_face_p flag.) If WINDOW | |
2872 | indeed has some glyphs highlighted in mouse face, signal to | |
2873 | frame's up-to-date hook that mouse highlight was overwritten, | |
2874 | so that it will arrange for redisplaying the highlight. */ | |
2875 | if (EQ (hlinfo->mouse_face_window, window)) | |
2876 | { | |
2877 | hlinfo->mouse_face_beg_row = hlinfo->mouse_face_beg_col = -1; | |
2878 | hlinfo->mouse_face_end_row = hlinfo->mouse_face_end_col = -1; | |
2879 | hlinfo->mouse_face_window = Qnil; | |
2880 | } | |
a6b1c7cc | 2881 | } |
1a13852e MR |
2882 | free_window_matrices (r); |
2883 | ||
2884 | windows_or_buffers_changed++; | |
2885 | Vwindow_list = Qnil; | |
2886 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
46a4ce9e | 2887 | resize_failed = 0; |
1a13852e | 2888 | |
e74aeda8 | 2889 | if (!WINDOW_LEAF_P (w)) |
1a13852e | 2890 | { |
be7f5545 | 2891 | /* Resize child windows vertically. */ |
5f24fa51 DA |
2892 | XSETINT (delta, r->total_lines - w->total_lines); |
2893 | w->top_line = r->top_line; | |
1a13852e | 2894 | resize_root_window (window, delta, Qnil, Qnil); |
d615d6d2 MR |
2895 | if (window_resize_check (w, 0)) |
2896 | window_resize_apply (w, 0); | |
1a13852e MR |
2897 | else |
2898 | { | |
2899 | resize_root_window (window, delta, Qnil, Qt); | |
d615d6d2 MR |
2900 | if (window_resize_check (w, 0)) |
2901 | window_resize_apply (w, 0); | |
1a13852e MR |
2902 | else |
2903 | resize_failed = 1; | |
2904 | } | |
2905 | ||
be7f5545 | 2906 | /* Resize child windows horizontally. */ |
1a13852e MR |
2907 | if (!resize_failed) |
2908 | { | |
5f24fa51 DA |
2909 | w->left_col = r->left_col; |
2910 | XSETINT (delta, r->total_cols - w->total_cols); | |
1a13852e | 2911 | resize_root_window (window, delta, Qt, Qnil); |
d615d6d2 MR |
2912 | if (window_resize_check (w, 1)) |
2913 | window_resize_apply (w, 1); | |
1a13852e MR |
2914 | else |
2915 | { | |
2916 | resize_root_window (window, delta, Qt, Qt); | |
d615d6d2 MR |
2917 | if (window_resize_check (w, 1)) |
2918 | window_resize_apply (w, 1); | |
1a13852e MR |
2919 | else |
2920 | resize_failed = 1; | |
2921 | } | |
2922 | } | |
2923 | ||
2924 | if (resize_failed) | |
2925 | /* Play safe, if we still can ... */ | |
2926 | { | |
2927 | window = swindow; | |
2928 | w = XWINDOW (window); | |
2929 | } | |
2930 | } | |
2931 | ||
2932 | /* Cleanly unlink WINDOW from window-tree. */ | |
d3d50620 | 2933 | if (!NILP (w->prev)) |
1a13852e MR |
2934 | /* Get SIBLING above (on the left of) WINDOW. */ |
2935 | { | |
d3d50620 | 2936 | sibling = w->prev; |
1a13852e | 2937 | s = XWINDOW (sibling); |
e8c17b81 | 2938 | wset_next (s, w->next); |
d3d50620 | 2939 | if (!NILP (s->next)) |
e8c17b81 | 2940 | wset_prev (XWINDOW (s->next), sibling); |
1a13852e MR |
2941 | } |
2942 | else | |
2943 | /* Get SIBLING below (on the right of) WINDOW. */ | |
2944 | { | |
d3d50620 | 2945 | sibling = w->next; |
1a13852e | 2946 | s = XWINDOW (sibling); |
e8c17b81 | 2947 | wset_prev (s, Qnil); |
e74aeda8 DA |
2948 | wset_combination (XWINDOW (w->parent), |
2949 | XWINDOW (w->parent)->horizontal, sibling); | |
1a13852e MR |
2950 | } |
2951 | ||
be7f5545 | 2952 | /* Delete ROOT and all child windows of ROOT. */ |
e74aeda8 | 2953 | if (WINDOWP (r->contents)) |
1a13852e | 2954 | { |
e74aeda8 DA |
2955 | delete_all_child_windows (r->contents); |
2956 | wset_combination (r, 0, Qnil); | |
1a13852e MR |
2957 | } |
2958 | ||
2959 | replace_window (root, window, 1); | |
2960 | ||
7ffe7ef6 | 2961 | /* This must become SWINDOW anyway ....... */ |
e74aeda8 | 2962 | if (BUFFERP (w->contents) && !resize_failed) |
1a13852e MR |
2963 | { |
2964 | /* Try to minimize scrolling, by setting the window start to the | |
2965 | point will cause the text at the old window start to be at the | |
2966 | same place on the frame. But don't try to do this if the | |
2967 | window start is outside the visible portion (as might happen | |
2968 | when the display is not current, due to typeahead). */ | |
2969 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2970 | if (new_top != top | |
e74aeda8 DA |
2971 | && startpos >= BUF_BEGV (XBUFFER (w->contents)) |
2972 | && startpos <= BUF_ZV (XBUFFER (w->contents))) | |
1a13852e MR |
2973 | { |
2974 | struct position pos; | |
2975 | struct buffer *obuf = current_buffer; | |
2976 | ||
e74aeda8 | 2977 | Fset_buffer (w->contents); |
1a13852e MR |
2978 | /* This computation used to temporarily move point, but that |
2979 | can have unwanted side effects due to text properties. */ | |
c54aa166 | 2980 | pos = *vmotion (startpos, startbyte, -top, w); |
1a13852e | 2981 | |
e74aeda8 | 2982 | set_marker_both (w->start, w->contents, pos.bufpos, pos.bytepos); |
9d93ce29 | 2983 | w->window_end_valid = 0; |
c98ff5dd DA |
2984 | w->start_at_line_beg = (pos.bytepos == BEGV_BYTE |
2985 | || FETCH_BYTE (pos.bytepos - 1) == '\n'); | |
1a13852e MR |
2986 | /* We need to do this, so that the window-scroll-functions |
2987 | get called. */ | |
c98ff5dd | 2988 | w->optional_new_start = 1; |
1a13852e MR |
2989 | |
2990 | set_buffer_internal (obuf); | |
2991 | } | |
2992 | } | |
2993 | ||
2994 | adjust_glyphs (f); | |
4d7e6e51 | 2995 | unblock_input (); |
1a13852e MR |
2996 | |
2997 | run_window_configuration_change_hook (f); | |
2998 | ||
2999 | return Qnil; | |
3000 | } | |
3001 | ||
3002 | ||
9397e56f MR |
3003 | void |
3004 | replace_buffer_in_windows (Lisp_Object buffer) | |
7ab12479 | 3005 | { |
9397e56f | 3006 | call1 (Qreplace_buffer_in_windows, buffer); |
7ab12479 JB |
3007 | } |
3008 | ||
c6afe371 DA |
3009 | /* If BUFFER is shown in a window, safely replace it with some other |
3010 | buffer in all windows of all frames, even those on other keyboards. */ | |
ff58478b RS |
3011 | |
3012 | void | |
9397e56f | 3013 | replace_buffer_in_windows_safely (Lisp_Object buffer) |
ff58478b | 3014 | { |
c6afe371 DA |
3015 | if (buffer_window_count (XBUFFER (buffer))) |
3016 | { | |
3017 | Lisp_Object tail, frame; | |
ff58478b | 3018 | |
c6afe371 DA |
3019 | /* A single call to window_loop won't do the job because it only |
3020 | considers frames on the current keyboard. So loop manually over | |
3021 | frames, and handle each one. */ | |
3022 | FOR_EACH_FRAME (tail, frame) | |
3023 | window_loop (REPLACE_BUFFER_IN_WINDOWS_SAFELY, buffer, 1, frame); | |
3024 | } | |
ff58478b | 3025 | } |
c6afe371 | 3026 | |
a481b3ea JB |
3027 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the |
3028 | minimum allowable size. */ | |
5500c422 | 3029 | |
605be8af | 3030 | void |
a10c8269 | 3031 | check_frame_size (struct frame *frame, int *rows, int *cols) |
a481b3ea | 3032 | { |
628df3bf | 3033 | /* For height, we have to see: |
54b8bcb5 RS |
3034 | how many windows the frame has at minimum (one or two), |
3035 | and whether it has a menu bar or other special stuff at the top. */ | |
3036 | int min_height | |
3037 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
3038 | ? MIN_SAFE_WINDOW_HEIGHT | |
3039 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 3040 | |
5500c422 GM |
3041 | if (FRAME_TOP_MARGIN (frame) > 0) |
3042 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
3043 | |
3044 | if (*rows < min_height) | |
3045 | *rows = min_height; | |
3046 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
3047 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
3048 | } | |
3049 | ||
79fd290e | 3050 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
3051 | Return 1 if window width is ok after adjustment; 0 if window |
3052 | is still too narrow. */ | |
3053 | ||
3054 | static int | |
971de7fb | 3055 | adjust_window_margins (struct window *w) |
949cf20f KS |
3056 | { |
3057 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
3058 | - WINDOW_FRINGE_COLS (w) | |
3059 | - WINDOW_SCROLL_BAR_COLS (w)); | |
3060 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
3061 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
3062 | ||
3063 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
3064 | return 1; | |
3065 | ||
3066 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
3067 | return 0; | |
3068 | ||
3069 | /* Window's text area is too narrow, but reducing the window | |
3070 | margins will fix that. */ | |
3071 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
3072 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
3073 | { | |
3074 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
077288cf | 3075 | { |
e8c17b81 PE |
3076 | wset_left_margin_cols (w, make_number (margin_cols / 2)); |
3077 | wset_right_margin_cols (w, make_number (margin_cols / 2)); | |
077288cf | 3078 | } |
949cf20f | 3079 | else |
e8c17b81 | 3080 | wset_right_margin_cols (w, make_number (margin_cols)); |
949cf20f KS |
3081 | } |
3082 | else | |
e8c17b81 | 3083 | wset_left_margin_cols (w, make_number (margin_cols)); |
949cf20f KS |
3084 | return 1; |
3085 | } | |
562dd5e9 | 3086 | \f |
9397e56f MR |
3087 | /* The following three routines are needed for running a window's |
3088 | configuration change hook. */ | |
562dd5e9 MR |
3089 | static void |
3090 | run_funs (Lisp_Object funs) | |
3091 | { | |
3092 | for (; CONSP (funs); funs = XCDR (funs)) | |
3093 | if (!EQ (XCAR (funs), Qt)) | |
3094 | call0 (XCAR (funs)); | |
3095 | } | |
6b61353c | 3096 | |
27e498e6 | 3097 | static void |
9397e56f MR |
3098 | select_window_norecord (Lisp_Object window) |
3099 | { | |
27e498e6 PE |
3100 | if (WINDOW_LIVE_P (window)) |
3101 | Fselect_window (window, Qt); | |
9397e56f MR |
3102 | } |
3103 | ||
27e498e6 | 3104 | static void |
9397e56f MR |
3105 | select_frame_norecord (Lisp_Object frame) |
3106 | { | |
27e498e6 PE |
3107 | if (FRAME_LIVE_P (XFRAME (frame))) |
3108 | Fselect_frame (frame, Qt); | |
9397e56f | 3109 | } |
6b61353c | 3110 | |
562dd5e9 MR |
3111 | void |
3112 | run_window_configuration_change_hook (struct frame *f) | |
3113 | { | |
d311d28c | 3114 | ptrdiff_t count = SPECPDL_INDEX (); |
562dd5e9 MR |
3115 | Lisp_Object frame, global_wcch |
3116 | = Fdefault_value (Qwindow_configuration_change_hook); | |
3117 | XSETFRAME (frame, f); | |
6b61353c | 3118 | |
d1f55f16 | 3119 | if (NILP (Vrun_hooks) || !NILP (inhibit_lisp_code)) |
562dd5e9 | 3120 | return; |
6b61353c | 3121 | |
562dd5e9 MR |
3122 | /* Use the right buffer. Matters when running the local hooks. */ |
3123 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
6b61353c | 3124 | { |
66322887 | 3125 | record_unwind_current_buffer (); |
562dd5e9 MR |
3126 | Fset_buffer (Fwindow_buffer (Qnil)); |
3127 | } | |
6a44ffb3 | 3128 | |
1a13852e MR |
3129 | if (SELECTED_FRAME () != f) |
3130 | { | |
3131 | record_unwind_protect (select_frame_norecord, Fselected_frame ()); | |
3132 | select_frame_norecord (frame); | |
3133 | } | |
3134 | ||
6a44ffb3 SM |
3135 | /* Look for buffer-local values. */ |
3136 | { | |
3137 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
3138 | for (; CONSP (windows); windows = XCDR (windows)) | |
3139 | { | |
3140 | Lisp_Object window = XCAR (windows); | |
3141 | Lisp_Object buffer = Fwindow_buffer (window); | |
3142 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
3143 | buffer))) | |
3144 | { | |
d311d28c | 3145 | ptrdiff_t inner_count = SPECPDL_INDEX (); |
6a44ffb3 SM |
3146 | record_unwind_protect (select_window_norecord, Fselected_window ()); |
3147 | select_window_norecord (window); | |
3148 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
3149 | buffer)); | |
46a4ce9e | 3150 | unbind_to (inner_count, Qnil); |
fec89261 | 3151 | } |
6a44ffb3 SM |
3152 | } |
3153 | } | |
047aaeb9 | 3154 | |
6a44ffb3 SM |
3155 | run_funs (global_wcch); |
3156 | unbind_to (count, Qnil); | |
ef264c42 SM |
3157 | } |
3158 | ||
1a13852e | 3159 | DEFUN ("run-window-configuration-change-hook", Frun_window_configuration_change_hook, |
d9f07150 | 3160 | Srun_window_configuration_change_hook, 0, 1, 0, |
68f8f1c0 | 3161 | doc: /* Run `window-configuration-change-hook' for FRAME. |
d9f07150 | 3162 | If FRAME is omitted or nil, it defaults to the selected frame. */) |
c4b6914d | 3163 | (Lisp_Object frame) |
1a13852e | 3164 | { |
d9f07150 | 3165 | run_window_configuration_change_hook (decode_live_frame (frame)); |
1a13852e MR |
3166 | return Qnil; |
3167 | } | |
3168 | ||
5500c422 GM |
3169 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3170 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3171 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3172 | margins, fringes, and scroll-bar settings of the window are not | |
3173 | reset from the buffer's local settings. */ | |
7ab12479 | 3174 | |
5500c422 | 3175 | void |
748fa866 DA |
3176 | set_window_buffer (Lisp_Object window, Lisp_Object buffer, |
3177 | bool run_hooks_p, bool keep_margins_p) | |
5500c422 GM |
3178 | { |
3179 | struct window *w = XWINDOW (window); | |
3180 | struct buffer *b = XBUFFER (buffer); | |
d311d28c | 3181 | ptrdiff_t count = SPECPDL_INDEX (); |
e74aeda8 | 3182 | int samebuf = EQ (buffer, w->contents); |
7ab12479 | 3183 | |
e8c17b81 | 3184 | wset_buffer (w, buffer); |
86e48436 RS |
3185 | |
3186 | if (EQ (window, selected_window)) | |
39eb03f1 | 3187 | bset_last_selected_window (b, window); |
beb4e312 | 3188 | |
c49a0495 KS |
3189 | /* Let redisplay errors through. */ |
3190 | b->display_error_modiff = 0; | |
3191 | ||
beb4e312 | 3192 | /* Update time stamps of buffer display. */ |
4b4deea2 | 3193 | if (INTEGERP (BVAR (b, display_count))) |
39eb03f1 PE |
3194 | bset_display_count (b, make_number (XINT (BVAR (b, display_count)) + 1)); |
3195 | bset_display_time (b, Fcurrent_time ()); | |
86e48436 | 3196 | |
e8c17b81 PE |
3197 | wset_window_end_pos (w, make_number (0)); |
3198 | wset_window_end_vpos (w, make_number (0)); | |
72af86bd | 3199 | memset (&w->last_cursor, 0, sizeof w->last_cursor); |
9d93ce29 | 3200 | |
c3b232e4 | 3201 | if (!(keep_margins_p && samebuf)) |
23fe745a | 3202 | { /* If we're not actually changing the buffer, don't reset hscroll and |
c3b232e4 SM |
3203 | vscroll. This case happens for example when called from |
3204 | change_frame_size_1, where we use a dummy call to | |
3205 | Fset_window_buffer on the frame's selected window (and no other) | |
3206 | just in order to run window-configuration-change-hook. | |
3207 | Resetting hscroll and vscroll here is problematic for things like | |
3208 | image-mode and doc-view-mode since it resets the image's position | |
3209 | whenever we resize the frame. */ | |
80b00b08 | 3210 | w->hscroll = w->min_hscroll = 0; |
c3b232e4 | 3211 | w->vscroll = 0; |
d3d50620 DA |
3212 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
3213 | set_marker_restricted (w->start, | |
c3b232e4 SM |
3214 | make_number (b->last_window_start), |
3215 | buffer); | |
c98ff5dd DA |
3216 | w->start_at_line_beg = 0; |
3217 | w->force_start = 0; | |
80b00b08 DA |
3218 | w->last_modified = 0; |
3219 | w->last_overlay_modified = 0; | |
c3b232e4 SM |
3220 | } |
3221 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
3222 | I doubt it's worth the trouble. */ | |
7ab12479 | 3223 | windows_or_buffers_changed++; |
5b03d3c0 | 3224 | |
da39107c | 3225 | /* We must select BUFFER for running the window-scroll-functions. */ |
5b03d3c0 RS |
3226 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3227 | because that might itself be a local variable. */ | |
da39107c | 3228 | if (window_initialized) |
5b03d3c0 | 3229 | { |
66322887 | 3230 | record_unwind_current_buffer (); |
5b03d3c0 RS |
3231 | Fset_buffer (buffer); |
3232 | } | |
3233 | ||
d3d50620 | 3234 | XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type); |
a1562258 | 3235 | |
949cf20f KS |
3236 | if (!keep_margins_p) |
3237 | { | |
3238 | /* Set left and right marginal area width etc. from buffer. */ | |
3239 | ||
79fd290e | 3240 | /* This may call adjust_window_margins three times, so |
949cf20f | 3241 | temporarily disable window margins. */ |
d3d50620 DA |
3242 | Lisp_Object save_left = w->left_margin_cols; |
3243 | Lisp_Object save_right = w->right_margin_cols; | |
6b61353c | 3244 | |
e8c17b81 PE |
3245 | wset_left_margin_cols (w, Qnil); |
3246 | wset_right_margin_cols (w, Qnil); | |
949cf20f KS |
3247 | |
3248 | Fset_window_fringes (window, | |
4b4deea2 TT |
3249 | BVAR (b, left_fringe_width), BVAR (b, right_fringe_width), |
3250 | BVAR (b, fringes_outside_margins)); | |
949cf20f KS |
3251 | |
3252 | Fset_window_scroll_bars (window, | |
4b4deea2 TT |
3253 | BVAR (b, scroll_bar_width), |
3254 | BVAR (b, vertical_scroll_bar_type), Qnil); | |
949cf20f | 3255 | |
e8c17b81 PE |
3256 | wset_left_margin_cols (w, save_left); |
3257 | wset_right_margin_cols (w, save_right); | |
6b61353c | 3258 | |
949cf20f | 3259 | Fset_window_margins (window, |
4b4deea2 | 3260 | BVAR (b, left_margin_cols), BVAR (b, right_margin_cols)); |
949cf20f | 3261 | } |
7ab12479 | 3262 | |
5500c422 GM |
3263 | if (run_hooks_p) |
3264 | { | |
3265 | if (! NILP (Vwindow_scroll_functions)) | |
3266 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
d3d50620 | 3267 | Fmarker_position (w->start)); |
ef264c42 | 3268 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
5500c422 | 3269 | } |
543f5fb1 | 3270 | |
5b03d3c0 | 3271 | unbind_to (count, Qnil); |
5500c422 | 3272 | } |
5b03d3c0 | 3273 | |
a7ca3326 | 3274 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
d653c8cc | 3275 | doc: /* Make WINDOW display BUFFER-OR-NAME as its contents. |
52162052 | 3276 | WINDOW must be a live window and defaults to the selected one. |
9397e56f MR |
3277 | BUFFER-OR-NAME must be a buffer or the name of an existing buffer. |
3278 | ||
3279 | Optional third argument KEEP-MARGINS non-nil means that WINDOW's current | |
3280 | display margins, fringe widths, and scroll bar settings are preserved; | |
3281 | the default is to reset these from the local settings for BUFFER-OR-NAME | |
3282 | or the frame defaults. Return nil. | |
d653c8cc | 3283 | |
7bfac547 MR |
3284 | This function throws an error when WINDOW is strongly dedicated to its |
3285 | buffer (that is `window-dedicated-p' returns t for WINDOW) and does not | |
3286 | already display BUFFER-OR-NAME. | |
6cb4a892 | 3287 | |
8fef9de1 MR |
3288 | This function runs `window-scroll-functions' before running |
3289 | `window-configuration-change-hook'. */) | |
5842a27b | 3290 | (register Lisp_Object window, Lisp_Object buffer_or_name, Lisp_Object keep_margins) |
5500c422 | 3291 | { |
d653c8cc | 3292 | register Lisp_Object tem, buffer; |
52162052 | 3293 | register struct window *w = decode_live_window (window); |
5500c422 | 3294 | |
bed0c171 | 3295 | XSETWINDOW (window, w); |
d653c8cc | 3296 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 3297 | CHECK_BUFFER (buffer); |
e578f381 | 3298 | if (!BUFFER_LIVE_P (XBUFFER (buffer))) |
5500c422 GM |
3299 | error ("Attempt to display deleted buffer"); |
3300 | ||
e74aeda8 | 3301 | tem = w->contents; |
aac0c6e3 MR |
3302 | if (NILP (tem)) |
3303 | error ("Window is deleted"); | |
822995f8 | 3304 | else |
5500c422 | 3305 | { |
9397e56f MR |
3306 | if (!EQ (tem, buffer)) |
3307 | { | |
d3d50620 | 3308 | if (EQ (w->dedicated, Qt)) |
9397e56f MR |
3309 | /* WINDOW is strongly dedicated to its buffer, signal an |
3310 | error. */ | |
3311 | error ("Window is dedicated to `%s'", SDATA (BVAR (XBUFFER (tem), name))); | |
3312 | else | |
3313 | /* WINDOW is weakly dedicated to its buffer, reset | |
e4769531 | 3314 | dedication. */ |
e8c17b81 | 3315 | wset_dedicated (w, Qnil); |
9397e56f MR |
3316 | |
3317 | call1 (Qrecord_window_buffer, window); | |
3318 | } | |
5500c422 GM |
3319 | |
3320 | unshow_buffer (w); | |
3321 | } | |
3322 | ||
949cf20f | 3323 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 | 3324 | |
9397e56f | 3325 | return Qnil; |
c6932ecd | 3326 | } |
b7354ddf | 3327 | \f |
7e5cf297 | 3328 | static Lisp_Object |
971de7fb | 3329 | display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, Lisp_Object override_frame) |
d07f802a | 3330 | { |
87478b52 | 3331 | return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); |
d07f802a RS |
3332 | } |
3333 | ||
6b61353c KH |
3334 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, |
3335 | 0, 1, 0, | |
5a1048a5 | 3336 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 3337 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3338 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c | 3339 | displaying that buffer. */) |
5842a27b | 3340 | (Lisp_Object object) |
6b61353c KH |
3341 | { |
3342 | if (NILP (object)) | |
3343 | { | |
3344 | windows_or_buffers_changed++; | |
3345 | update_mode_lines++; | |
3346 | return Qt; | |
3347 | } | |
3348 | ||
3349 | if (WINDOWP (object)) | |
3350 | { | |
3351 | struct window *w = XWINDOW (object); | |
3352 | mark_window_display_accurate (object, 0); | |
c98ff5dd | 3353 | w->update_mode_line = 1; |
e74aeda8 DA |
3354 | if (BUFFERP (w->contents)) |
3355 | XBUFFER (w->contents)->prevent_redisplay_optimizations_p = 1; | |
6b61353c KH |
3356 | ++update_mode_lines; |
3357 | return Qt; | |
3358 | } | |
0cc1039f | 3359 | |
6b61353c KH |
3360 | if (STRINGP (object)) |
3361 | object = Fget_buffer (object); | |
c6afe371 DA |
3362 | if (BUFFERP (object) && BUFFER_LIVE_P (XBUFFER (object)) |
3363 | && buffer_window_count (XBUFFER (object))) | |
6b61353c | 3364 | { |
c6afe371 DA |
3365 | /* If buffer is live and shown in at least one window, find |
3366 | all windows showing this buffer and force update of them. */ | |
6b61353c KH |
3367 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); |
3368 | return NILP (object) ? Qnil : Qt; | |
3369 | } | |
3370 | ||
3371 | /* If nothing suitable was found, just return. | |
3372 | We could signal an error, but this feature will typically be used | |
3373 | asynchronously in timers or process sentinels, so we don't. */ | |
3374 | return Qnil; | |
3375 | } | |
3376 | ||
1f76f6f5 | 3377 | /* Obsolete since 24.3. */ |
7ab12479 | 3378 | void |
971de7fb | 3379 | temp_output_buffer_show (register Lisp_Object buf) |
7ab12479 JB |
3380 | { |
3381 | register struct buffer *old = current_buffer; | |
3382 | register Lisp_Object window; | |
3383 | register struct window *w; | |
3384 | ||
39eb03f1 | 3385 | bset_directory (XBUFFER (buf), BVAR (current_buffer, directory)); |
bccd3dd1 | 3386 | |
7ab12479 | 3387 | Fset_buffer (buf); |
c6367666 | 3388 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3389 | BEGV = BEG; |
3390 | ZV = Z; | |
3391 | SET_PT (BEG); | |
7ab12479 JB |
3392 | set_buffer_internal (old); |
3393 | ||
e67a1dea | 3394 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3395 | call1 (Vtemp_buffer_show_function, buf); |
3396 | else | |
3397 | { | |
4ee88440 | 3398 | window = display_buffer (buf, Qnil, Qnil); |
7ab12479 | 3399 | |
d3d50620 | 3400 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3401 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3402 | Vminibuf_scroll_window = window; |
3403 | w = XWINDOW (window); | |
80b00b08 DA |
3404 | w->hscroll = 0; |
3405 | w->min_hscroll = 0; | |
d3d50620 DA |
3406 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3407 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3408 | |
beb4e312 | 3409 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3410 | and its buffer current. */ |
dee091a3 | 3411 | { |
d311d28c | 3412 | ptrdiff_t count = SPECPDL_INDEX (); |
dee091a3 JD |
3413 | Lisp_Object prev_window, prev_buffer; |
3414 | prev_window = selected_window; | |
3415 | XSETBUFFER (prev_buffer, old); | |
3416 | ||
3417 | /* Select the window that was chosen, for running the hook. | |
3418 | Note: Both Fselect_window and select_window_norecord may | |
3419 | set-buffer to the buffer displayed in the window, | |
3420 | so we need to save the current buffer. --stef */ | |
27e498e6 | 3421 | record_unwind_protect (restore_buffer, prev_buffer); |
dee091a3 JD |
3422 | record_unwind_protect (select_window_norecord, prev_window); |
3423 | Fselect_window (window, Qt); | |
e74aeda8 | 3424 | Fset_buffer (w->contents); |
dee091a3 JD |
3425 | Frun_hooks (1, &Qtemp_buffer_show_hook); |
3426 | unbind_to (count, Qnil); | |
3427 | } | |
2cccc823 | 3428 | } |
7ab12479 JB |
3429 | } |
3430 | \f | |
1a13852e MR |
3431 | /* Make new window, have it replace WINDOW in window-tree, and make |
3432 | WINDOW its only vertical child (HORFLAG 1 means make WINDOW its only | |
3433 | horizontal child). */ | |
3434 | static void | |
748fa866 | 3435 | make_parent_window (Lisp_Object window, bool horflag) |
1a13852e MR |
3436 | { |
3437 | Lisp_Object parent; | |
3438 | register struct window *o, *p; | |
1a13852e MR |
3439 | |
3440 | o = XWINDOW (window); | |
3441 | p = allocate_window (); | |
aa754e6a | 3442 | memcpy ((char *) p + sizeof (struct vectorlike_header), |
62efea5e | 3443 | (char *) o + sizeof (struct vectorlike_header), |
663e2b3f | 3444 | word_size * VECSIZE (struct window)); |
e74aeda8 | 3445 | /* P's buffer slot may change from nil to a buffer... */ |
98a07056 | 3446 | adjust_window_count (p, 1); |
1a13852e MR |
3447 | XSETWINDOW (parent, p); |
3448 | ||
1a13852e MR |
3449 | replace_window (window, parent, 1); |
3450 | ||
e8c17b81 PE |
3451 | wset_next (o, Qnil); |
3452 | wset_prev (o, Qnil); | |
3453 | wset_parent (o, parent); | |
e74aeda8 | 3454 | /* ...but now P becomes an internal window. */ |
e8c17b81 PE |
3455 | wset_start (p, Qnil); |
3456 | wset_pointm (p, Qnil); | |
3457 | wset_buffer (p, Qnil); | |
e74aeda8 | 3458 | wset_combination (p, horflag, window); |
e8c17b81 PE |
3459 | wset_combination_limit (p, Qnil); |
3460 | wset_window_parameters (p, Qnil); | |
1a13852e MR |
3461 | } |
3462 | ||
496e208e MR |
3463 | /* Make new window from scratch. */ |
3464 | Lisp_Object | |
3465 | make_window (void) | |
3466 | { | |
3467 | Lisp_Object window; | |
3468 | register struct window *w; | |
3469 | ||
3470 | w = allocate_window (); | |
62efea5e DA |
3471 | /* Initialize Lisp data. Note that allocate_window initializes all |
3472 | Lisp data to nil, so do it only for slots which should not be nil. */ | |
e8c17b81 PE |
3473 | wset_normal_lines (w, make_float (1.0)); |
3474 | wset_normal_cols (w, make_float (1.0)); | |
3475 | wset_new_total (w, make_number (0)); | |
3476 | wset_new_normal (w, make_number (0)); | |
3477 | wset_start (w, Fmake_marker ()); | |
3478 | wset_pointm (w, Fmake_marker ()); | |
3479 | wset_vertical_scroll_bar_type (w, Qt); | |
3480 | wset_window_end_pos (w, make_number (0)); | |
3481 | wset_window_end_vpos (w, make_number (0)); | |
e99f70c8 SM |
3482 | /* These Lisp fields are marked specially so they're not set to nil by |
3483 | allocate_window. */ | |
3484 | wset_prev_buffers (w, Qnil); | |
3485 | wset_next_buffers (w, Qnil); | |
62efea5e DA |
3486 | |
3487 | /* Initialize non-Lisp data. Note that allocate_window zeroes out all | |
3488 | non-Lisp data, so do it only for slots which should not be zero. */ | |
496e208e | 3489 | w->nrows_scale_factor = w->ncols_scale_factor = 1; |
496e208e MR |
3490 | w->phys_cursor_type = -1; |
3491 | w->phys_cursor_width = -1; | |
422ff52b | 3492 | w->column_number_displayed = -1; |
62efea5e | 3493 | |
496e208e MR |
3494 | /* Reset window_list. */ |
3495 | Vwindow_list = Qnil; | |
3496 | /* Return window. */ | |
3497 | XSETWINDOW (window, w); | |
3498 | return window; | |
3499 | } | |
3500 | \f | |
3501 | DEFUN ("set-window-new-total", Fset_window_new_total, Sset_window_new_total, 2, 3, 0, | |
3502 | doc: /* Set new total size of WINDOW to SIZE. | |
52162052 | 3503 | WINDOW must be a valid window and defaults to the selected one. |
496e208e MR |
3504 | Return SIZE. |
3505 | ||
3506 | Optional argument ADD non-nil means add SIZE to the new total size of | |
3507 | WINDOW and return the sum. | |
3508 | ||
be7f5545 | 3509 | Note: This function does not operate on any child windows of WINDOW. */) |
496e208e MR |
3510 | (Lisp_Object window, Lisp_Object size, Lisp_Object add) |
3511 | { | |
52162052 | 3512 | struct window *w = decode_valid_window (window); |
496e208e MR |
3513 | |
3514 | CHECK_NUMBER (size); | |
3515 | if (NILP (add)) | |
e8c17b81 | 3516 | wset_new_total (w, size); |
496e208e | 3517 | else |
e8c17b81 | 3518 | wset_new_total (w, make_number (XINT (w->new_total) + XINT (size))); |
496e208e | 3519 | |
d3d50620 | 3520 | return w->new_total; |
496e208e MR |
3521 | } |
3522 | ||
3523 | DEFUN ("set-window-new-normal", Fset_window_new_normal, Sset_window_new_normal, 1, 2, 0, | |
3524 | doc: /* Set new normal size of WINDOW to SIZE. | |
52162052 | 3525 | WINDOW must be a valid window and defaults to the selected one. |
496e208e MR |
3526 | Return SIZE. |
3527 | ||
be7f5545 | 3528 | Note: This function does not operate on any child windows of WINDOW. */) |
496e208e MR |
3529 | (Lisp_Object window, Lisp_Object size) |
3530 | { | |
e8c17b81 PE |
3531 | wset_new_normal (decode_valid_window (window), size); |
3532 | return size; | |
7ab12479 JB |
3533 | } |
3534 | ||
1a13852e MR |
3535 | /* Return 1 if setting w->total_lines (w->total_cols if HORFLAG is |
3536 | non-zero) to w->new_total would result in correct heights (widths) | |
be7f5545 | 3537 | for window W and recursively all child windows of W. |
1a13852e MR |
3538 | |
3539 | Note: This function does not check any of `window-fixed-size-p', | |
3540 | `window-min-height' or `window-min-width'. It does check that window | |
3541 | sizes do not drop below one line (two columns). */ | |
4b66faf3 | 3542 | static int |
748fa866 | 3543 | window_resize_check (struct window *w, bool horflag) |
1a13852e MR |
3544 | { |
3545 | struct window *c; | |
3546 | ||
e74aeda8 | 3547 | if (WINDOW_VERTICAL_COMBINATION_P (w)) |
1a13852e MR |
3548 | /* W is a vertical combination. */ |
3549 | { | |
e74aeda8 | 3550 | c = XWINDOW (w->contents); |
1a13852e | 3551 | if (horflag) |
be7f5545 | 3552 | /* All child windows of W must have the same width as W. */ |
1a13852e MR |
3553 | { |
3554 | while (c) | |
3555 | { | |
d3d50620 | 3556 | if ((XINT (c->new_total) != XINT (w->new_total)) |
d615d6d2 | 3557 | || !window_resize_check (c, horflag)) |
1a13852e | 3558 | return 0; |
d3d50620 | 3559 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3560 | } |
3561 | return 1; | |
3562 | } | |
3563 | else | |
be7f5545 MR |
3564 | /* The sum of the heights of the child windows of W must equal |
3565 | W's height. */ | |
1a13852e MR |
3566 | { |
3567 | int sum_of_sizes = 0; | |
3568 | while (c) | |
3569 | { | |
d615d6d2 | 3570 | if (!window_resize_check (c, horflag)) |
1a13852e | 3571 | return 0; |
d3d50620 DA |
3572 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); |
3573 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e | 3574 | } |
d3d50620 | 3575 | return (sum_of_sizes == XINT (w->new_total)); |
1a13852e MR |
3576 | } |
3577 | } | |
e74aeda8 | 3578 | else if (WINDOW_HORIZONTAL_COMBINATION_P (w)) |
1a13852e MR |
3579 | /* W is a horizontal combination. */ |
3580 | { | |
e74aeda8 | 3581 | c = XWINDOW (w->contents); |
1a13852e | 3582 | if (horflag) |
be7f5545 | 3583 | /* The sum of the widths of the child windows of W must equal W's |
1a13852e MR |
3584 | width. */ |
3585 | { | |
3586 | int sum_of_sizes = 0; | |
3587 | while (c) | |
3588 | { | |
d615d6d2 | 3589 | if (!window_resize_check (c, horflag)) |
1a13852e | 3590 | return 0; |
d3d50620 DA |
3591 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); |
3592 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e | 3593 | } |
d3d50620 | 3594 | return (sum_of_sizes == XINT (w->new_total)); |
1a13852e MR |
3595 | } |
3596 | else | |
be7f5545 | 3597 | /* All child windows of W must have the same height as W. */ |
1a13852e MR |
3598 | { |
3599 | while (c) | |
3600 | { | |
d3d50620 | 3601 | if ((XINT (c->new_total) != XINT (w->new_total)) |
d615d6d2 | 3602 | || !window_resize_check (c, horflag)) |
1a13852e | 3603 | return 0; |
d3d50620 | 3604 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3605 | } |
3606 | return 1; | |
3607 | } | |
3608 | } | |
3609 | else | |
3610 | /* A leaf window. Make sure it's not too small. The following | |
3611 | hardcodes the values of `window-safe-min-width' (2) and | |
3612 | `window-safe-min-height' (1) which are defined in window.el. */ | |
d3d50620 | 3613 | return XINT (w->new_total) >= (horflag ? 2 : 1); |
1a13852e MR |
3614 | } |
3615 | ||
3616 | /* Set w->total_lines (w->total_cols if HORIZONTAL is non-zero) to | |
be7f5545 MR |
3617 | w->new_total for window W and recursively all child windows of W. |
3618 | Also calculate and assign the new vertical (horizontal) start | |
3619 | positions of each of these windows. | |
1a13852e MR |
3620 | |
3621 | This function does not perform any error checks. Make sure you have | |
d615d6d2 | 3622 | run window_resize_check on W before applying this function. */ |
440a42e3 | 3623 | static void |
748fa866 | 3624 | window_resize_apply (struct window *w, bool horflag) |
1a13852e | 3625 | { |
46a4ce9e | 3626 | struct window *c; |
1a13852e MR |
3627 | int pos; |
3628 | ||
3629 | /* Note: Assigning new_normal requires that the new total size of the | |
3630 | parent window has been set *before*. */ | |
3631 | if (horflag) | |
3632 | { | |
5f24fa51 | 3633 | w->total_cols = XFASTINT (w->new_total); |
d3d50620 | 3634 | if (NUMBERP (w->new_normal)) |
e8c17b81 | 3635 | wset_normal_cols (w, w->new_normal); |
1a13852e | 3636 | |
5f24fa51 | 3637 | pos = w->left_col; |
1a13852e MR |
3638 | } |
3639 | else | |
3640 | { | |
5f24fa51 | 3641 | w->total_lines = XFASTINT (w->new_total); |
d3d50620 | 3642 | if (NUMBERP (w->new_normal)) |
e8c17b81 | 3643 | wset_normal_lines (w, w->new_normal); |
1a13852e | 3644 | |
5f24fa51 | 3645 | pos = w->top_line; |
1a13852e MR |
3646 | } |
3647 | ||
e74aeda8 | 3648 | if (WINDOW_VERTICAL_COMBINATION_P (w)) |
1a13852e MR |
3649 | /* W is a vertical combination. */ |
3650 | { | |
e74aeda8 | 3651 | c = XWINDOW (w->contents); |
1a13852e MR |
3652 | while (c) |
3653 | { | |
3654 | if (horflag) | |
5f24fa51 | 3655 | c->left_col = pos; |
1a13852e | 3656 | else |
5f24fa51 | 3657 | c->top_line = pos; |
d615d6d2 | 3658 | window_resize_apply (c, horflag); |
1a13852e | 3659 | if (!horflag) |
5f24fa51 | 3660 | pos = pos + c->total_lines; |
d3d50620 | 3661 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3662 | } |
3663 | } | |
e74aeda8 | 3664 | else if (WINDOW_HORIZONTAL_COMBINATION_P (w)) |
1a13852e MR |
3665 | /* W is a horizontal combination. */ |
3666 | { | |
e74aeda8 | 3667 | c = XWINDOW (w->contents); |
1a13852e MR |
3668 | while (c) |
3669 | { | |
3670 | if (horflag) | |
5f24fa51 | 3671 | c->left_col = pos; |
1a13852e | 3672 | else |
5f24fa51 | 3673 | c->top_line = pos; |
d615d6d2 | 3674 | window_resize_apply (c, horflag); |
1a13852e | 3675 | if (horflag) |
5f24fa51 | 3676 | pos = pos + c->total_cols; |
d3d50620 | 3677 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3678 | } |
3679 | } | |
3680 | ||
3681 | /* Clear out some redisplay caches. */ | |
80b00b08 DA |
3682 | w->last_modified = 0; |
3683 | w->last_overlay_modified = 0; | |
1a13852e MR |
3684 | } |
3685 | ||
3686 | ||
d9f07150 | 3687 | DEFUN ("window-resize-apply", Fwindow_resize_apply, Swindow_resize_apply, 0, 2, 0, |
1a13852e | 3688 | doc: /* Apply requested size values for window-tree of FRAME. |
d9f07150 DA |
3689 | If FRAME is omitted or nil, it defaults to the selected frame. |
3690 | ||
3691 | Optional argument HORIZONTAL omitted or nil means apply requested | |
3692 | height values. HORIZONTAL non-nil means apply requested width values. | |
1a13852e MR |
3693 | |
3694 | This function checks whether the requested values sum up to a valid | |
be7f5545 MR |
3695 | window layout, recursively assigns the new sizes of all child windows |
3696 | and calculates and assigns the new start positions of these windows. | |
1a13852e MR |
3697 | |
3698 | Note: This function does not check any of `window-fixed-size-p', | |
3699 | `window-min-height' or `window-min-width'. All these checks have to | |
3700 | be applied on the Elisp level. */) | |
3701 | (Lisp_Object frame, Lisp_Object horizontal) | |
3702 | { | |
d9f07150 DA |
3703 | struct frame *f = decode_live_frame (frame); |
3704 | struct window *r = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
748fa866 | 3705 | bool horflag = !NILP (horizontal); |
1a13852e | 3706 | |
d615d6d2 | 3707 | if (!window_resize_check (r, horflag) |
5f24fa51 DA |
3708 | || (XINT (r->new_total) |
3709 | != (horflag ? r->total_cols : r->total_lines))) | |
1a13852e MR |
3710 | return Qnil; |
3711 | ||
4d7e6e51 | 3712 | block_input (); |
d615d6d2 | 3713 | window_resize_apply (r, horflag); |
1a13852e MR |
3714 | |
3715 | windows_or_buffers_changed++; | |
3716 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3717 | ||
3718 | adjust_glyphs (f); | |
4d7e6e51 | 3719 | unblock_input (); |
1a13852e MR |
3720 | |
3721 | run_window_configuration_change_hook (f); | |
3722 | ||
3723 | return Qt; | |
3724 | } | |
3725 | ||
3726 | ||
3727 | /* Resize frame F's windows when number of lines of F is set to SIZE. | |
3728 | HORFLAG 1 means resize windows when number of columns of F is set to | |
3729 | SIZE. | |
3730 | ||
3731 | This function can delete all windows but the selected one in order to | |
3732 | satisfy the request. The result will be meaningful if and only if | |
3733 | F's windows have meaningful sizes when you call this. */ | |
3734 | void | |
748fa866 | 3735 | resize_frame_windows (struct frame *f, int size, bool horflag) |
1a13852e | 3736 | { |
e69b0960 | 3737 | Lisp_Object root = f->root_window; |
1a13852e | 3738 | struct window *r = XWINDOW (root); |
e69b0960 | 3739 | Lisp_Object mini = f->minibuffer_window; |
1a13852e MR |
3740 | struct window *m; |
3741 | /* new_size is the new size of the frame's root window. */ | |
3742 | int new_size = (horflag | |
3743 | ? size | |
3744 | : (size | |
3745 | - FRAME_TOP_MARGIN (f) | |
3746 | - ((FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3747 | ? 1 : 0))); | |
3748 | ||
5f24fa51 | 3749 | r->top_line = FRAME_TOP_MARGIN (f); |
e74aeda8 | 3750 | if (WINDOW_LEAF_P (r)) |
1a13852e MR |
3751 | /* For a leaf root window just set the size. */ |
3752 | if (horflag) | |
5f24fa51 | 3753 | r->total_cols = new_size; |
1a13852e | 3754 | else |
5f24fa51 | 3755 | r->total_lines = new_size; |
1a13852e MR |
3756 | else |
3757 | { | |
3758 | /* old_size is the old size of the frame's root window. */ | |
5f24fa51 | 3759 | int old_size = horflag ? r->total_cols : r->total_lines; |
1a13852e MR |
3760 | Lisp_Object delta; |
3761 | ||
3762 | XSETINT (delta, new_size - old_size); | |
3763 | /* Try a "normal" resize first. */ | |
3764 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qnil); | |
3a45383a | 3765 | if (window_resize_check (r, horflag) |
d3d50620 | 3766 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3767 | window_resize_apply (r, horflag); |
1a13852e MR |
3768 | else |
3769 | { | |
3770 | /* Try with "reasonable" minimum sizes next. */ | |
3771 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qt); | |
d615d6d2 | 3772 | if (window_resize_check (r, horflag) |
d3d50620 | 3773 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3774 | window_resize_apply (r, horflag); |
1a13852e MR |
3775 | else |
3776 | { | |
3777 | /* Finally, try with "safe" minimum sizes. */ | |
3778 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qsafe); | |
d615d6d2 | 3779 | if (window_resize_check (r, horflag) |
d3d50620 | 3780 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3781 | window_resize_apply (r, horflag); |
1a13852e MR |
3782 | else |
3783 | { | |
3784 | /* We lost. Delete all windows but the frame's | |
3785 | selected one. */ | |
e69b0960 | 3786 | root = f->selected_window; |
1a13852e MR |
3787 | Fdelete_other_windows_internal (root, Qnil); |
3788 | if (horflag) | |
5f24fa51 | 3789 | XWINDOW (root)->total_cols = new_size; |
1a13852e | 3790 | else |
5f24fa51 | 3791 | XWINDOW (root)->total_lines = new_size; |
1a13852e MR |
3792 | } |
3793 | } | |
3794 | } | |
3795 | } | |
3796 | ||
3797 | if (FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3798 | { | |
3799 | m = XWINDOW (mini); | |
3800 | if (horflag) | |
5f24fa51 | 3801 | m->total_cols = size; |
1a13852e MR |
3802 | else |
3803 | { | |
3804 | /* Are we sure we always want 1 line here? */ | |
5f24fa51 DA |
3805 | m->total_lines = 1; |
3806 | m->top_line = r->top_line + r->total_lines; | |
1a13852e MR |
3807 | } |
3808 | } | |
dca778d5 MR |
3809 | |
3810 | windows_or_buffers_changed++; | |
1a13852e MR |
3811 | } |
3812 | ||
3813 | ||
3814 | DEFUN ("split-window-internal", Fsplit_window_internal, Ssplit_window_internal, 4, 4, 0, | |
3815 | doc: /* Split window OLD. | |
3816 | Second argument TOTAL-SIZE specifies the number of lines or columns of the | |
9397e56f | 3817 | new window. In any case TOTAL-SIZE must be a positive integer. |
1a13852e MR |
3818 | |
3819 | Third argument SIDE nil (or `below') specifies that the new window shall | |
3820 | be located below WINDOW. SIDE `above' means the new window shall be | |
3821 | located above WINDOW. In both cases TOTAL-SIZE specifies the number of | |
3822 | lines of the new window including space reserved for the mode and/or | |
3823 | header line. | |
3824 | ||
3825 | SIDE t (or `right') specifies that the new window shall be located on | |
3826 | the right side of WINDOW. SIDE `left' means the new window shall be | |
3827 | located on the left of WINDOW. In both cases TOTAL-SIZE specifies the | |
3828 | number of columns of the new window including space reserved for fringes | |
3829 | and the scrollbar or a divider column. | |
3830 | ||
3831 | Fourth argument NORMAL-SIZE specifies the normal size of the new window | |
3832 | according to the SIDE argument. | |
3833 | ||
3834 | The new total and normal sizes of all involved windows must have been | |
3835 | set correctly. See the code of `split-window' for how this is done. */) | |
3836 | (Lisp_Object old, Lisp_Object total_size, Lisp_Object side, Lisp_Object normal_size) | |
3837 | { | |
3838 | /* OLD (*o) is the window we have to split. (*p) is either OLD's | |
3839 | parent window or an internal window we have to install as OLD's new | |
3840 | parent. REFERENCE (*r) must denote a live window, or is set to OLD | |
3841 | provided OLD is a leaf window, or to the frame's selected window. | |
3842 | NEW (*n) is the new window created with some parameters taken from | |
3843 | REFERENCE (*r). */ | |
3844 | register Lisp_Object new, frame, reference; | |
3845 | register struct window *o, *p, *n, *r; | |
3846 | struct frame *f; | |
748fa866 | 3847 | bool horflag |
1a13852e MR |
3848 | /* HORFLAG is 1 when we split side-by-side, 0 otherwise. */ |
3849 | = EQ (side, Qt) || EQ (side, Qleft) || EQ (side, Qright); | |
b6f67890 | 3850 | int combination_limit = 0; |
1a13852e MR |
3851 | |
3852 | CHECK_WINDOW (old); | |
3853 | o = XWINDOW (old); | |
3854 | frame = WINDOW_FRAME (o); | |
3855 | f = XFRAME (frame); | |
3856 | ||
3857 | CHECK_NUMBER (total_size); | |
3858 | ||
b6f67890 MR |
3859 | /* Set combination_limit to 1 if we have to make a new parent window. |
3860 | We do that if either `window-combination-limit' is t, or OLD has no | |
3861 | parent, or OLD is ortho-combined. */ | |
3862 | combination_limit = | |
8e17c9ba | 3863 | EQ (Vwindow_combination_limit, Qt) |
d3d50620 | 3864 | || NILP (o->parent) |
e74aeda8 DA |
3865 | || (horflag |
3866 | ? WINDOW_VERTICAL_COMBINATION_P (XWINDOW (o->parent)) | |
3867 | : WINDOW_HORIZONTAL_COMBINATION_P (XWINDOW (o->parent))); | |
1a13852e MR |
3868 | |
3869 | /* We need a live reference window to initialize some parameters. */ | |
3870 | if (WINDOW_LIVE_P (old)) | |
3871 | /* OLD is live, use it as reference window. */ | |
3872 | reference = old; | |
3873 | else | |
3874 | /* Use the frame's selected window as reference window. */ | |
3875 | reference = FRAME_SELECTED_WINDOW (f); | |
3876 | r = XWINDOW (reference); | |
3877 | ||
3878 | /* The following bugs are caught by `split-window'. */ | |
3879 | if (MINI_WINDOW_P (o)) | |
3880 | error ("Attempt to split minibuffer window"); | |
3881 | else if (XINT (total_size) < (horflag ? 2 : 1)) | |
3882 | error ("Size of new window too small (after split)"); | |
a0c2d0ae MR |
3883 | else if (!combination_limit && !NILP (Vwindow_combination_resize)) |
3884 | /* `window-combination-resize' non-nil means try to resize OLD's siblings | |
1a13852e MR |
3885 | proportionally. */ |
3886 | { | |
d3d50620 | 3887 | p = XWINDOW (o->parent); |
1a13852e | 3888 | /* Temporarily pretend we split the parent window. */ |
e8c17b81 | 3889 | wset_new_total |
5f24fa51 | 3890 | (p, make_number ((horflag ? p->total_cols : p->total_lines) |
077288cf | 3891 | - XINT (total_size))); |
d615d6d2 | 3892 | if (!window_resize_check (p, horflag)) |
1a13852e MR |
3893 | error ("Window sizes don't fit"); |
3894 | else | |
3895 | /* Undo the temporary pretension. */ | |
5f24fa51 DA |
3896 | wset_new_total (p, make_number |
3897 | (horflag ? p->total_cols : p->total_lines)); | |
1a13852e MR |
3898 | } |
3899 | else | |
3900 | { | |
d615d6d2 | 3901 | if (!window_resize_check (o, horflag)) |
1a13852e | 3902 | error ("Resizing old window failed"); |
d3d50620 | 3903 | else if (XINT (total_size) + XINT (o->new_total) |
5f24fa51 | 3904 | != (horflag ? o->total_cols : o->total_lines)) |
1a13852e MR |
3905 | error ("Sum of sizes of old and new window don't fit"); |
3906 | } | |
3907 | ||
3908 | /* This is our point of no return. */ | |
b6f67890 | 3909 | if (combination_limit) |
1a13852e MR |
3910 | { |
3911 | /* Save the old value of o->normal_cols/lines. It gets corrupted | |
3912 | by make_parent_window and we need it below for assigning it to | |
3913 | p->new_normal. */ | |
3a45383a | 3914 | Lisp_Object new_normal |
d3d50620 | 3915 | = horflag ? o->normal_cols : o->normal_lines; |
1a13852e MR |
3916 | |
3917 | make_parent_window (old, horflag); | |
d3d50620 | 3918 | p = XWINDOW (o->parent); |
fdaf534a MR |
3919 | if (EQ (Vwindow_combination_limit, Qt)) |
3920 | /* Store t in the new parent's combination_limit slot to avoid | |
3921 | that its children get merged into another window. */ | |
3922 | wset_combination_limit (p, Qt); | |
1a13852e | 3923 | /* These get applied below. */ |
5f24fa51 DA |
3924 | wset_new_total (p, make_number |
3925 | (horflag ? o->total_cols : o->total_lines)); | |
e8c17b81 | 3926 | wset_new_normal (p, new_normal); |
1a13852e MR |
3927 | } |
3928 | else | |
d3d50620 | 3929 | p = XWINDOW (o->parent); |
1a13852e MR |
3930 | |
3931 | windows_or_buffers_changed++; | |
3932 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3933 | new = make_window (); | |
3934 | n = XWINDOW (new); | |
e8c17b81 PE |
3935 | wset_frame (n, frame); |
3936 | wset_parent (n, o->parent); | |
1a13852e MR |
3937 | |
3938 | if (EQ (side, Qabove) || EQ (side, Qleft)) | |
3939 | { | |
e8c17b81 | 3940 | wset_prev (n, o->prev); |
d3d50620 | 3941 | if (NILP (n->prev)) |
e74aeda8 | 3942 | wset_combination (p, horflag, new); |
1a13852e | 3943 | else |
e8c17b81 PE |
3944 | wset_next (XWINDOW (n->prev), new); |
3945 | wset_next (n, old); | |
3946 | wset_prev (o, new); | |
1a13852e MR |
3947 | } |
3948 | else | |
3949 | { | |
e8c17b81 | 3950 | wset_next (n, o->next); |
d3d50620 | 3951 | if (!NILP (n->next)) |
e8c17b81 PE |
3952 | wset_prev (XWINDOW (n->next), new); |
3953 | wset_prev (n, old); | |
3954 | wset_next (o, new); | |
1a13852e MR |
3955 | } |
3956 | ||
9d93ce29 | 3957 | n->window_end_valid = 0; |
1a13852e MR |
3958 | memset (&n->last_cursor, 0, sizeof n->last_cursor); |
3959 | ||
3960 | /* Get special geometry settings from reference window. */ | |
e8c17b81 PE |
3961 | wset_left_margin_cols (n, r->left_margin_cols); |
3962 | wset_right_margin_cols (n, r->right_margin_cols); | |
3963 | wset_left_fringe_width (n, r->left_fringe_width); | |
3964 | wset_right_fringe_width (n, r->right_fringe_width); | |
1a13852e | 3965 | n->fringes_outside_margins = r->fringes_outside_margins; |
e8c17b81 PE |
3966 | wset_scroll_bar_width (n, r->scroll_bar_width); |
3967 | wset_vertical_scroll_bar_type (n, r->vertical_scroll_bar_type); | |
1a13852e | 3968 | |
1a13852e MR |
3969 | /* Directly assign orthogonal coordinates and sizes. */ |
3970 | if (horflag) | |
3971 | { | |
5f24fa51 DA |
3972 | n->top_line = o->top_line; |
3973 | n->total_lines = o->total_lines; | |
1a13852e MR |
3974 | } |
3975 | else | |
3976 | { | |
5f24fa51 DA |
3977 | n->left_col = o->left_col; |
3978 | n->total_cols = o->total_cols; | |
1a13852e MR |
3979 | } |
3980 | ||
d615d6d2 | 3981 | /* Iso-coordinates and sizes are assigned by window_resize_apply, |
1a13852e | 3982 | get them ready here. */ |
e8c17b81 PE |
3983 | wset_new_total (n, total_size); |
3984 | wset_new_normal (n, normal_size); | |
1a13852e | 3985 | |
4d7e6e51 | 3986 | block_input (); |
d615d6d2 | 3987 | window_resize_apply (p, horflag); |
1a13852e MR |
3988 | adjust_glyphs (f); |
3989 | /* Set buffer of NEW to buffer of reference window. Don't run | |
3990 | any hooks. */ | |
e74aeda8 | 3991 | set_window_buffer (new, r->contents, 0, 1); |
4d7e6e51 | 3992 | unblock_input (); |
1a13852e MR |
3993 | |
3994 | /* Maybe we should run the scroll functions in Elisp (which already | |
3995 | runs the configuration change hook). */ | |
3996 | if (! NILP (Vwindow_scroll_functions)) | |
3997 | run_hook_with_args_2 (Qwindow_scroll_functions, new, | |
d3d50620 | 3998 | Fmarker_position (n->start)); |
1a13852e MR |
3999 | /* Return NEW. */ |
4000 | return new; | |
4001 | } | |
4002 | ||
4003 | ||
4004 | DEFUN ("delete-window-internal", Fdelete_window_internal, Sdelete_window_internal, 1, 1, 0, | |
4005 | doc: /* Remove WINDOW from its frame. | |
87e68db4 JB |
4006 | WINDOW defaults to the selected window. Return nil. |
4007 | Signal an error when WINDOW is the only window on its frame. */) | |
1a13852e MR |
4008 | (register Lisp_Object window) |
4009 | { | |
4010 | register Lisp_Object parent, sibling, frame, root; | |
4011 | struct window *w, *p, *s, *r; | |
4012 | struct frame *f; | |
e74aeda8 | 4013 | bool horflag, before_sibling = 0; |
1a13852e MR |
4014 | |
4015 | w = decode_any_window (window); | |
4016 | XSETWINDOW (window, w); | |
e74aeda8 | 4017 | if (NILP (w->contents)) |
1a13852e MR |
4018 | /* It's a no-op to delete an already deleted window. */ |
4019 | return Qnil; | |
4020 | ||
d3d50620 | 4021 | parent = w->parent; |
1a13852e MR |
4022 | if (NILP (parent)) |
4023 | /* Never delete a minibuffer or frame root window. */ | |
4024 | error ("Attempt to delete minibuffer or sole ordinary window"); | |
d3d50620 | 4025 | else if (NILP (w->prev) && NILP (w->next)) |
1a13852e MR |
4026 | /* Rather bow out here, this case should be handled on the Elisp |
4027 | level. */ | |
4028 | error ("Attempt to delete sole window of parent"); | |
4029 | ||
4030 | p = XWINDOW (parent); | |
e74aeda8 | 4031 | horflag = WINDOW_HORIZONTAL_COMBINATION_P (p); |
1a13852e MR |
4032 | |
4033 | frame = WINDOW_FRAME (w); | |
4034 | f = XFRAME (frame); | |
4035 | ||
4036 | root = FRAME_ROOT_WINDOW (f); | |
4037 | r = XWINDOW (root); | |
4038 | ||
4039 | /* Unlink WINDOW from window tree. */ | |
d3d50620 | 4040 | if (NILP (w->prev)) |
1a13852e MR |
4041 | /* Get SIBLING below (on the right of) WINDOW. */ |
4042 | { | |
4043 | /* before_sibling 1 means WINDOW is the first child of its | |
4044 | parent and thus before the sibling. */ | |
4045 | before_sibling = 1; | |
d3d50620 | 4046 | sibling = w->next; |
1a13852e | 4047 | s = XWINDOW (sibling); |
e8c17b81 | 4048 | wset_prev (s, Qnil); |
e74aeda8 | 4049 | wset_combination (p, horflag, sibling); |
1a13852e MR |
4050 | } |
4051 | else | |
4052 | /* Get SIBLING above (on the left of) WINDOW. */ | |
4053 | { | |
d3d50620 | 4054 | sibling = w->prev; |
1a13852e | 4055 | s = XWINDOW (sibling); |
e8c17b81 | 4056 | wset_next (s, w->next); |
d3d50620 | 4057 | if (!NILP (s->next)) |
e8c17b81 | 4058 | wset_prev (XWINDOW (s->next), sibling); |
7ab12479 JB |
4059 | } |
4060 | ||
d615d6d2 | 4061 | if (window_resize_check (r, horflag) |
5f24fa51 DA |
4062 | && (XINT (r->new_total) |
4063 | == (horflag ? r->total_cols : r->total_lines))) | |
562dd5e9 MR |
4064 | /* We can delete WINDOW now. */ |
4065 | { | |
95986d52 | 4066 | |
562dd5e9 | 4067 | /* Block input. */ |
4d7e6e51 | 4068 | block_input (); |
d615d6d2 | 4069 | window_resize_apply (p, horflag); |
0d384044 | 4070 | |
95986d52 CY |
4071 | /* If this window is referred to by the dpyinfo's mouse |
4072 | highlight, invalidate that slot to be safe (Bug#9904). */ | |
4c5501e9 EZ |
4073 | if (!FRAME_INITIAL_P (f)) |
4074 | { | |
4075 | Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f); | |
4076 | ||
4077 | if (EQ (hlinfo->mouse_face_window, window)) | |
4078 | hlinfo->mouse_face_window = Qnil; | |
4079 | } | |
95986d52 | 4080 | |
562dd5e9 MR |
4081 | windows_or_buffers_changed++; |
4082 | Vwindow_list = Qnil; | |
4083 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
0d384044 | 4084 | |
e8c17b81 | 4085 | wset_next (w, Qnil); /* Don't delete w->next too. */ |
562dd5e9 | 4086 | free_window_matrices (w); |
bd99e242 | 4087 | |
e74aeda8 | 4088 | if (WINDOWP (w->contents)) |
0d384044 | 4089 | { |
e74aeda8 DA |
4090 | delete_all_child_windows (w->contents); |
4091 | wset_combination (w, 0, Qnil); | |
0d384044 | 4092 | } |
e74aeda8 | 4093 | else |
bd99e242 | 4094 | { |
562dd5e9 | 4095 | unshow_buffer (w); |
d3d50620 DA |
4096 | unchain_marker (XMARKER (w->pointm)); |
4097 | unchain_marker (XMARKER (w->start)); | |
e8c17b81 | 4098 | wset_buffer (w, Qnil); |
bd99e242 RS |
4099 | } |
4100 | ||
d3d50620 | 4101 | if (NILP (s->prev) && NILP (s->next)) |
562dd5e9 MR |
4102 | /* A matrjoshka where SIBLING has become the only child of |
4103 | PARENT. */ | |
c32de52a | 4104 | { |
562dd5e9 MR |
4105 | /* Put SIBLING into PARENT's place. */ |
4106 | replace_window (parent, sibling, 0); | |
4107 | /* Have SIBLING inherit the following three slot values from | |
b6f67890 | 4108 | PARENT (the combination_limit slot is not inherited). */ |
e8c17b81 PE |
4109 | wset_normal_cols (s, p->normal_cols); |
4110 | wset_normal_lines (s, p->normal_lines); | |
562dd5e9 | 4111 | /* Mark PARENT as deleted. */ |
e74aeda8 | 4112 | wset_combination (p, 0, Qnil); |
562dd5e9 MR |
4113 | /* Try to merge SIBLING into its new parent. */ |
4114 | recombine_windows (sibling); | |
c32de52a RS |
4115 | } |
4116 | ||
562dd5e9 MR |
4117 | adjust_glyphs (f); |
4118 | ||
4119 | if (!WINDOW_LIVE_P (FRAME_SELECTED_WINDOW (f))) | |
4120 | /* We deleted the frame's selected window. */ | |
0d384044 | 4121 | { |
562dd5e9 MR |
4122 | /* Use the frame's first window as fallback ... */ |
4123 | Lisp_Object new_selected_window = Fframe_first_window (frame); | |
4124 | /* ... but preferably use its most recently used window. */ | |
4125 | Lisp_Object mru_window; | |
0d384044 | 4126 | |
562dd5e9 MR |
4127 | /* `get-mru-window' might fail for some reason so play it safe |
4128 | - promote the first window _without recording it_ first. */ | |
4129 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
4130 | Fselect_window (new_selected_window, Qt); | |
4131 | else | |
f00af5b1 | 4132 | fset_selected_window (f, new_selected_window); |
0d384044 | 4133 | |
4d7e6e51 | 4134 | unblock_input (); |
0d384044 | 4135 | |
562dd5e9 MR |
4136 | /* Now look whether `get-mru-window' gets us something. */ |
4137 | mru_window = call1 (Qget_mru_window, frame); | |
4138 | if (WINDOW_LIVE_P (mru_window) | |
d3d50620 | 4139 | && EQ (XWINDOW (mru_window)->frame, frame)) |
562dd5e9 | 4140 | new_selected_window = mru_window; |
bd99e242 | 4141 | |
562dd5e9 MR |
4142 | /* If all ended up well, we now promote the mru window. */ |
4143 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
4144 | Fselect_window (new_selected_window, Qnil); | |
4145 | else | |
f00af5b1 | 4146 | fset_selected_window (f, new_selected_window); |
0d384044 RS |
4147 | } |
4148 | else | |
4d7e6e51 | 4149 | unblock_input (); |
0d384044 | 4150 | |
562dd5e9 MR |
4151 | /* Must be run by the caller: |
4152 | run_window_configuration_change_hook (f); */ | |
0d384044 | 4153 | } |
562dd5e9 MR |
4154 | else |
4155 | /* We failed: Relink WINDOW into window tree. */ | |
0d384044 | 4156 | { |
562dd5e9 MR |
4157 | if (before_sibling) |
4158 | { | |
e8c17b81 | 4159 | wset_prev (s, window); |
e74aeda8 | 4160 | wset_combination (p, horflag, window); |
562dd5e9 MR |
4161 | } |
4162 | else | |
4163 | { | |
e8c17b81 | 4164 | wset_next (s, window); |
d3d50620 | 4165 | if (!NILP (w->next)) |
e8c17b81 | 4166 | wset_prev (XWINDOW (w->next), window); |
562dd5e9 MR |
4167 | } |
4168 | error ("Deletion failed"); | |
0d384044 RS |
4169 | } |
4170 | ||
0d384044 RS |
4171 | return Qnil; |
4172 | } | |
f984d4fc GM |
4173 | \f |
4174 | /*********************************************************************** | |
4175 | Resizing Mini-Windows | |
4176 | ***********************************************************************/ | |
4177 | ||
562dd5e9 MR |
4178 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we |
4179 | can. */ | |
4180 | void | |
4181 | grow_mini_window (struct window *w, int delta) | |
f984d4fc | 4182 | { |
d3d50620 | 4183 | struct frame *f = XFRAME (w->frame); |
562dd5e9 MR |
4184 | struct window *r; |
4185 | Lisp_Object root, value; | |
f984d4fc | 4186 | |
a54e2c05 DA |
4187 | eassert (MINI_WINDOW_P (w)); |
4188 | eassert (delta >= 0); | |
f984d4fc | 4189 | |
562dd5e9 MR |
4190 | root = FRAME_ROOT_WINDOW (f); |
4191 | r = XWINDOW (root); | |
5386012d MR |
4192 | value = call2 (Qwindow_resize_root_window_vertically, |
4193 | root, make_number (- delta)); | |
d615d6d2 | 4194 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4195 | { |
4d7e6e51 | 4196 | block_input (); |
d615d6d2 | 4197 | window_resize_apply (r, 0); |
f984d4fc | 4198 | |
562dd5e9 | 4199 | /* Grow the mini-window. */ |
5f24fa51 DA |
4200 | w->top_line = r->top_line + r->total_lines; |
4201 | w->total_lines -= XINT (value); | |
80b00b08 DA |
4202 | w->last_modified = 0; |
4203 | w->last_overlay_modified = 0; | |
f984d4fc | 4204 | |
dca778d5 | 4205 | windows_or_buffers_changed++; |
562dd5e9 | 4206 | adjust_glyphs (f); |
4d7e6e51 | 4207 | unblock_input (); |
f984d4fc GM |
4208 | } |
4209 | } | |
4210 | ||
4211 | ||
562dd5e9 MR |
4212 | /* Shrink mini-window W. */ |
4213 | void | |
4214 | shrink_mini_window (struct window *w) | |
f984d4fc | 4215 | { |
d3d50620 | 4216 | struct frame *f = XFRAME (w->frame); |
562dd5e9 MR |
4217 | struct window *r; |
4218 | Lisp_Object root, value; | |
4219 | EMACS_INT size; | |
43b4a21f | 4220 | |
a54e2c05 | 4221 | eassert (MINI_WINDOW_P (w)); |
177c0ea7 | 4222 | |
5f24fa51 | 4223 | size = w->total_lines; |
562dd5e9 MR |
4224 | if (size > 1) |
4225 | { | |
4226 | root = FRAME_ROOT_WINDOW (f); | |
4227 | r = XWINDOW (root); | |
5386012d | 4228 | value = call2 (Qwindow_resize_root_window_vertically, |
562dd5e9 | 4229 | root, make_number (size - 1)); |
d615d6d2 | 4230 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4231 | { |
4d7e6e51 | 4232 | block_input (); |
d615d6d2 | 4233 | window_resize_apply (r, 0); |
43b4a21f | 4234 | |
562dd5e9 | 4235 | /* Shrink the mini-window. */ |
5f24fa51 DA |
4236 | w->top_line = r->top_line + r->total_lines; |
4237 | w->total_lines = 1; | |
43b4a21f | 4238 | |
80b00b08 DA |
4239 | w->last_modified = 0; |
4240 | w->last_overlay_modified = 0; | |
43b4a21f | 4241 | |
dca778d5 | 4242 | windows_or_buffers_changed++; |
562dd5e9 | 4243 | adjust_glyphs (f); |
4d7e6e51 | 4244 | unblock_input (); |
f984d4fc | 4245 | } |
562dd5e9 MR |
4246 | /* If the above failed for whatever strange reason we must make a |
4247 | one window frame here. The same routine will be needed when | |
4248 | shrinking the frame (and probably when making the initial | |
4249 | *scratch* window). For the moment leave things as they are. */ | |
f984d4fc GM |
4250 | } |
4251 | } | |
4252 | ||
562dd5e9 MR |
4253 | DEFUN ("resize-mini-window-internal", Fresize_mini_window_internal, Sresize_mini_window_internal, 1, 1, 0, |
4254 | doc: /* Resize minibuffer window WINDOW. */) | |
4255 | (Lisp_Object window) | |
f984d4fc | 4256 | { |
562dd5e9 MR |
4257 | struct window *w = XWINDOW (window); |
4258 | struct window *r; | |
4259 | struct frame *f; | |
4260 | int height; | |
177c0ea7 | 4261 | |
562dd5e9 | 4262 | CHECK_WINDOW (window); |
d3d50620 | 4263 | f = XFRAME (w->frame); |
177c0ea7 | 4264 | |
d3d50620 | 4265 | if (!EQ (FRAME_MINIBUF_WINDOW (XFRAME (w->frame)), window)) |
562dd5e9 MR |
4266 | error ("Not a valid minibuffer window"); |
4267 | else if (FRAME_MINIBUF_ONLY_P (f)) | |
4268 | error ("Cannot resize a minibuffer-only frame"); | |
177c0ea7 | 4269 | |
562dd5e9 | 4270 | r = XWINDOW (FRAME_ROOT_WINDOW (f)); |
5f24fa51 | 4271 | height = r->total_lines + w->total_lines; |
d615d6d2 | 4272 | if (window_resize_check (r, 0) |
d3d50620 DA |
4273 | && XINT (w->new_total) > 0 |
4274 | && height == XINT (r->new_total) + XINT (w->new_total)) | |
f984d4fc | 4275 | { |
4d7e6e51 | 4276 | block_input (); |
d615d6d2 | 4277 | window_resize_apply (r, 0); |
f984d4fc | 4278 | |
5f24fa51 DA |
4279 | w->total_lines = XFASTINT (w->new_total); |
4280 | w->top_line = r->top_line + r->total_lines; | |
177c0ea7 | 4281 | |
562dd5e9 MR |
4282 | windows_or_buffers_changed++; |
4283 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
f984d4fc | 4284 | adjust_glyphs (f); |
4d7e6e51 | 4285 | unblock_input (); |
f984d4fc | 4286 | |
562dd5e9 MR |
4287 | run_window_configuration_change_hook (f); |
4288 | return Qt; | |
86c8e823 | 4289 | } |
562dd5e9 | 4290 | else error ("Failed to resize minibuffer window"); |
f984d4fc | 4291 | } |
562dd5e9 | 4292 | \f |
5500c422 GM |
4293 | /* Mark window cursors off for all windows in the window tree rooted |
4294 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4295 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4296 | the frame are cleared. */ | |
4297 | ||
4298 | void | |
971de7fb | 4299 | mark_window_cursors_off (struct window *w) |
5500c422 GM |
4300 | { |
4301 | while (w) | |
4302 | { | |
e74aeda8 DA |
4303 | if (WINDOWP (w->contents)) |
4304 | mark_window_cursors_off (XWINDOW (w->contents)); | |
5500c422 GM |
4305 | else |
4306 | w->phys_cursor_on_p = 0; | |
4307 | ||
d3d50620 | 4308 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
5500c422 GM |
4309 | } |
4310 | } | |
4311 | ||
4312 | ||
e9c195b1 | 4313 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4314 | |
4315 | int | |
971de7fb | 4316 | window_internal_height (struct window *w) |
7ab12479 | 4317 | { |
5f24fa51 | 4318 | int ht = w->total_lines; |
7ab12479 | 4319 | |
e9c195b1 GM |
4320 | if (!MINI_WINDOW_P (w)) |
4321 | { | |
d3d50620 | 4322 | if (!NILP (w->parent) |
e74aeda8 | 4323 | || WINDOWP (w->contents) |
d3d50620 DA |
4324 | || !NILP (w->next) |
4325 | || !NILP (w->prev) | |
e9c195b1 GM |
4326 | || WINDOW_WANTS_MODELINE_P (w)) |
4327 | --ht; | |
7ab12479 | 4328 | |
e9c195b1 GM |
4329 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4330 | --ht; | |
4331 | } | |
7ab12479 JB |
4332 | |
4333 | return ht; | |
4334 | } | |
5500c422 GM |
4335 | \f |
4336 | /************************************************************************ | |
4337 | Window Scrolling | |
4338 | ***********************************************************************/ | |
535e0b8e | 4339 | |
5500c422 | 4340 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4341 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4342 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4343 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4344 | means don't signal an error if we try to move over BEGV or ZV, | |
4345 | respectively. */ | |
7ab12479 | 4346 | |
101d1605 | 4347 | static void |
56b5d5b1 | 4348 | window_scroll (Lisp_Object window, EMACS_INT n, bool whole, int noerror) |
5500c422 | 4349 | { |
cba59f77 | 4350 | immediate_quit = 1; |
d311d28c | 4351 | n = clip_to_bounds (INT_MIN, n, INT_MAX); |
cba59f77 | 4352 | |
5500c422 GM |
4353 | /* If we must, use the pixel-based version which is much slower than |
4354 | the line-based one but can handle varying line heights. */ | |
d3d50620 | 4355 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) |
5500c422 GM |
4356 | window_scroll_pixel_based (window, n, whole, noerror); |
4357 | else | |
4358 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4359 | |
4360 | immediate_quit = 0; | |
5500c422 GM |
4361 | } |
4362 | ||
4363 | ||
4364 | /* Implementation of window_scroll that works based on pixel line | |
4365 | heights. See the comment of window_scroll for parameter | |
4366 | descriptions. */ | |
4367 | ||
4368 | static void | |
56b5d5b1 | 4369 | window_scroll_pixel_based (Lisp_Object window, int n, bool whole, int noerror) |
5500c422 GM |
4370 | { |
4371 | struct it it; | |
4372 | struct window *w = XWINDOW (window); | |
4373 | struct text_pos start; | |
5500c422 | 4374 | int this_scroll_margin; |
9d14503e | 4375 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5cdb3cf3 | 4376 | int vscrolled = 0; |
5a857365 | 4377 | int x, y, rtop, rbot, rowh, vpos; |
57b3e30b | 4378 | void *itdata = NULL; |
fdda0220 EZ |
4379 | int window_total_lines; |
4380 | int frame_line_height = default_line_pixel_height (w); | |
5500c422 | 4381 | |
d3d50620 | 4382 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
f0ee99a0 EZ |
4383 | /* Scrolling a minibuffer window via scroll bar when the echo area |
4384 | shows long text sometimes resets the minibuffer contents behind | |
4385 | our backs. */ | |
4386 | if (CHARPOS (start) > ZV) | |
4387 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
177c0ea7 | 4388 | |
5500c422 | 4389 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4390 | the screen. Allow PT to be partially visible, otherwise |
4391 | something like (scroll-down 1) with PT in the line before | |
4392 | the partially visible one would recenter. */ | |
5a857365 KS |
4393 | |
4394 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 | 4395 | { |
57b3e30b | 4396 | itdata = bidi_shelve_cache (); |
5500c422 GM |
4397 | /* Move backward half the height of the window. Performance note: |
4398 | vmotion used here is about 10% faster, but would give wrong | |
4399 | results for variable height lines. */ | |
4400 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4401 | it.current_y = it.last_visible_y; | |
f204989e | 4402 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4403 | |
5500c422 GM |
4404 | /* The function move_iterator_vertically may move over more than |
4405 | the specified y-distance. If it->w is small, e.g. a | |
4406 | mini-buffer window, we may end up in front of the window's | |
4407 | display area. This is the case when Start displaying at the | |
4408 | start of the line containing PT in this case. */ | |
4409 | if (it.current_y <= 0) | |
4410 | { | |
4411 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4412 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4413 | it.current_y = 0; |
4414 | } | |
4415 | ||
4416 | start = it.current.pos; | |
35928349 | 4417 | bidi_unshelve_cache (itdata, 0); |
5500c422 | 4418 | } |
e56263e5 KS |
4419 | else if (auto_window_vscroll_p) |
4420 | { | |
5a857365 | 4421 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
4422 | { |
4423 | int px; | |
fdda0220 | 4424 | int dy = frame_line_height; |
e56263e5 | 4425 | if (whole) |
e856c216 KS |
4426 | dy = max ((window_box_height (w) |
4427 | - next_screen_context_lines * dy), | |
4428 | dy); | |
e56263e5 KS |
4429 | dy *= n; |
4430 | ||
5a857365 | 4431 | if (n < 0) |
e56263e5 | 4432 | { |
5a857365 KS |
4433 | /* Only vscroll backwards if already vscrolled forwards. */ |
4434 | if (w->vscroll < 0 && rtop > 0) | |
4435 | { | |
4436 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
4437 | Fset_window_vscroll (window, make_number (px), Qt); | |
4438 | return; | |
4439 | } | |
e56263e5 | 4440 | } |
5a857365 | 4441 | if (n > 0) |
e56263e5 | 4442 | { |
5a857365 KS |
4443 | /* Do vscroll if already vscrolled or only display line. */ |
4444 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
4445 | { | |
4446 | px = max (0, -w->vscroll + min (rbot, dy)); | |
4447 | Fset_window_vscroll (window, make_number (px), Qt); | |
4448 | return; | |
4449 | } | |
4450 | ||
4451 | /* Maybe modify window start instead of scrolling. */ | |
4452 | if (rbot > 0 || w->vscroll < 0) | |
4453 | { | |
d311d28c | 4454 | ptrdiff_t spos; |
5a857365 KS |
4455 | |
4456 | Fset_window_vscroll (window, make_number (0), Qt); | |
4457 | /* If there are other text lines above the current row, | |
4458 | move window start to current row. Else to next row. */ | |
4459 | if (rbot > 0) | |
4460 | spos = XINT (Fline_beginning_position (Qnil)); | |
4461 | else | |
4462 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
d3d50620 | 4463 | set_marker_restricted (w->start, make_number (spos), |
e74aeda8 | 4464 | w->contents); |
c98ff5dd DA |
4465 | w->start_at_line_beg = 1; |
4466 | w->update_mode_line = 1; | |
80b00b08 DA |
4467 | w->last_modified = 0; |
4468 | w->last_overlay_modified = 0; | |
5a857365 KS |
4469 | /* Set force_start so that redisplay_window will run the |
4470 | window-scroll-functions. */ | |
c98ff5dd | 4471 | w->force_start = 1; |
5a857365 KS |
4472 | return; |
4473 | } | |
e56263e5 KS |
4474 | } |
4475 | } | |
5a857365 | 4476 | /* Cancel previous vscroll. */ |
e56263e5 KS |
4477 | Fset_window_vscroll (window, make_number (0), Qt); |
4478 | } | |
5500c422 | 4479 | |
57b3e30b | 4480 | itdata = bidi_shelve_cache (); |
d0c38d63 | 4481 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
4482 | point in the same window line as it is now, so get that line. */ |
4483 | if (!NILP (Vscroll_preserve_screen_position)) | |
4484 | { | |
c525d842 | 4485 | /* We preserve the goal pixel coordinate across consecutive |
a4b000fb JL |
4486 | calls to scroll-up, scroll-down and other commands that |
4487 | have the `scroll-command' property. This avoids the | |
c525d842 CY |
4488 | possibility of point becoming "stuck" on a tall line when |
4489 | scrolling by one line. */ | |
66fe93d1 | 4490 | if (window_scroll_pixel_based_preserve_y < 0 |
1344aad4 TT |
4491 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4492 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c525d842 CY |
4493 | { |
4494 | start_display (&it, w, start); | |
4495 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 4496 | window_scroll_pixel_based_preserve_y = it.current_y; |
c876b227 | 4497 | window_scroll_pixel_based_preserve_x = it.current_x; |
c525d842 | 4498 | } |
5500c422 GM |
4499 | } |
4500 | else | |
c876b227 SM |
4501 | window_scroll_pixel_based_preserve_y |
4502 | = window_scroll_pixel_based_preserve_x = -1; | |
5500c422 GM |
4503 | |
4504 | /* Move iterator it from start the specified distance forward or | |
4505 | backward. The result is the new window start. */ | |
4506 | start_display (&it, w, start); | |
4507 | if (whole) | |
4508 | { | |
d311d28c | 4509 | ptrdiff_t start_pos = IT_CHARPOS (it); |
fdda0220 | 4510 | int dy = frame_line_height; |
e856c216 KS |
4511 | dy = max ((window_box_height (w) |
4512 | - next_screen_context_lines * dy), | |
4513 | dy) * n; | |
d72340d4 GM |
4514 | |
4515 | /* Note that move_it_vertically always moves the iterator to the | |
4516 | start of a line. So, if the last line doesn't have a newline, | |
4517 | we would end up at the start of the line ending at ZV. */ | |
4518 | if (dy <= 0) | |
e856c216 KS |
4519 | { |
4520 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 4521 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
4522 | looking at an image that is taller that the window height. */ |
4523 | while (start_pos == IT_CHARPOS (it) | |
4524 | && start_pos > BEGV) | |
e4cc2dfc | 4525 | move_it_by_lines (&it, -1); |
e856c216 | 4526 | } |
d72340d4 | 4527 | else if (dy > 0) |
bed83ee4 | 4528 | { |
bed83ee4 KS |
4529 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
4530 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 4531 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
4532 | looking at an image that is taller that the window height. */ |
4533 | while (start_pos == IT_CHARPOS (it) | |
4534 | && start_pos < ZV) | |
e4cc2dfc | 4535 | move_it_by_lines (&it, 1); |
bed83ee4 | 4536 | } |
5500c422 GM |
4537 | } |
4538 | else | |
e4cc2dfc | 4539 | move_it_by_lines (&it, n); |
5500c422 | 4540 | |
96ae58c8 RS |
4541 | /* We failed if we find ZV is already on the screen (scrolling up, |
4542 | means there's nothing past the end), or if we can't start any | |
4543 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 4544 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 4545 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 4546 | { |
5cdb3cf3 MB |
4547 | if (IT_CHARPOS (it) == ZV) |
4548 | { | |
07ce8b53 RS |
4549 | if (it.current_y < it.last_visible_y |
4550 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 4551 | > it.last_visible_y)) |
a74eca50 GM |
4552 | { |
4553 | /* The last line was only partially visible, make it fully | |
4554 | visible. */ | |
4555 | w->vscroll = (it.last_visible_y | |
4556 | - it.current_y + it.max_ascent + it.max_descent); | |
4557 | adjust_glyphs (it.f); | |
4558 | } | |
5cdb3cf3 | 4559 | else |
57b3e30b | 4560 | { |
35928349 | 4561 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
4562 | if (noerror) |
4563 | return; | |
4564 | else if (n < 0) /* could happen with empty buffers */ | |
4565 | xsignal0 (Qbeginning_of_buffer); | |
4566 | else | |
4567 | xsignal0 (Qend_of_buffer); | |
4568 | } | |
5cdb3cf3 | 4569 | } |
5500c422 | 4570 | else |
5cdb3cf3 MB |
4571 | { |
4572 | if (w->vscroll != 0) | |
4573 | /* The first line was only partially visible, make it fully | |
4574 | visible. */ | |
4575 | w->vscroll = 0; | |
5cdb3cf3 | 4576 | else |
57b3e30b | 4577 | { |
35928349 | 4578 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
4579 | if (noerror) |
4580 | return; | |
4581 | else | |
4582 | xsignal0 (Qbeginning_of_buffer); | |
4583 | } | |
5cdb3cf3 MB |
4584 | } |
4585 | ||
4586 | /* If control gets here, then we vscrolled. */ | |
4587 | ||
e74aeda8 | 4588 | XBUFFER (w->contents)->prevent_redisplay_optimizations_p = 1; |
5cdb3cf3 MB |
4589 | |
4590 | /* Don't try to change the window start below. */ | |
4591 | vscrolled = 1; | |
5500c422 GM |
4592 | } |
4593 | ||
5cdb3cf3 MB |
4594 | if (! vscrolled) |
4595 | { | |
d311d28c PE |
4596 | ptrdiff_t pos = IT_CHARPOS (it); |
4597 | ptrdiff_t bytepos; | |
e68def1e AS |
4598 | |
4599 | /* If in the middle of a multi-glyph character move forward to | |
4600 | the next character. */ | |
4601 | if (in_display_vector_p (&it)) | |
4602 | { | |
4603 | ++pos; | |
4604 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
4605 | } | |
4606 | ||
5cdb3cf3 | 4607 | /* Set the window start, and set up the window for redisplay. */ |
e74aeda8 | 4608 | set_marker_restricted_both (w->start, w->contents, IT_CHARPOS (it), |
f74de345 | 4609 | IT_BYTEPOS (it)); |
4c1acb95 | 4610 | bytepos = marker_byte_position (w->start); |
c98ff5dd DA |
4611 | w->start_at_line_beg = (pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n'); |
4612 | w->update_mode_line = 1; | |
80b00b08 DA |
4613 | w->last_modified = 0; |
4614 | w->last_overlay_modified = 0; | |
5cdb3cf3 MB |
4615 | /* Set force_start so that redisplay_window will run the |
4616 | window-scroll-functions. */ | |
c98ff5dd | 4617 | w->force_start = 1; |
5cdb3cf3 | 4618 | } |
177c0ea7 | 4619 | |
dc297565 RS |
4620 | /* The rest of this function uses current_y in a nonstandard way, |
4621 | not including the height of the header line if any. */ | |
5500c422 | 4622 | it.current_y = it.vpos = 0; |
177c0ea7 | 4623 | |
940f53e5 RS |
4624 | /* Move PT out of scroll margins. |
4625 | This code wants current_y to be zero at the window start position | |
4626 | even if there is a header line. */ | |
fdda0220 EZ |
4627 | window_total_lines |
4628 | = w->total_lines * WINDOW_FRAME_LINE_HEIGHT (w) / frame_line_height; | |
940f53e5 | 4629 | this_scroll_margin = max (0, scroll_margin); |
3a45383a | 4630 | this_scroll_margin |
fdda0220 EZ |
4631 | = min (this_scroll_margin, window_total_lines / 4); |
4632 | this_scroll_margin *= frame_line_height; | |
940f53e5 RS |
4633 | |
4634 | if (n > 0) | |
5500c422 | 4635 | { |
940f53e5 RS |
4636 | /* We moved the window start towards ZV, so PT may be now |
4637 | in the scroll margin at the top. */ | |
4638 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
4639 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
4640 | && (NILP (Vscroll_preserve_screen_position) | |
4641 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4642 | /* We found PT at a legitimate height. Leave it alone. */ |
4643 | ; | |
66fe93d1 | 4644 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4645 | { |
fa3c3426 RS |
4646 | /* If we have a header line, take account of it. |
4647 | This is necessary because we set it.current_y to 0, above. */ | |
c876b227 SM |
4648 | move_it_to (&it, -1, |
4649 | window_scroll_pixel_based_preserve_x, | |
66fe93d1 LT |
4650 | window_scroll_pixel_based_preserve_y |
4651 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c876b227 | 4652 | -1, MOVE_TO_Y | MOVE_TO_X); |
940f53e5 RS |
4653 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4654 | } | |
4655 | else | |
5500c422 | 4656 | { |
5500c422 | 4657 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
4658 | { |
4659 | int prev = it.current_y; | |
e4cc2dfc | 4660 | move_it_by_lines (&it, 1); |
e9b2c961 RS |
4661 | if (prev == it.current_y) |
4662 | break; | |
4663 | } | |
5500c422 GM |
4664 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4665 | } | |
940f53e5 RS |
4666 | } |
4667 | else if (n < 0) | |
4668 | { | |
d311d28c | 4669 | ptrdiff_t charpos, bytepos; |
aed328bf | 4670 | int partial_p; |
940f53e5 | 4671 | |
66fe93d1 LT |
4672 | /* Save our position, for the |
4673 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
4674 | charpos = IT_CHARPOS (it); |
4675 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 4676 | |
940f53e5 RS |
4677 | /* We moved the window start towards BEGV, so PT may be now |
4678 | in the scroll margin at the bottom. */ | |
4679 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
4680 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
4681 | - this_scroll_margin - 1), | |
4682 | -1, | |
940f53e5 RS |
4683 | MOVE_TO_POS | MOVE_TO_Y); |
4684 | ||
aed328bf KS |
4685 | /* Save our position, in case it's correct. */ |
4686 | charpos = IT_CHARPOS (it); | |
4687 | bytepos = IT_BYTEPOS (it); | |
4688 | ||
4689 | /* See if point is on a partially visible line at the end. */ | |
4690 | if (it.what == IT_EOB) | |
4691 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
4692 | else | |
4693 | { | |
e4cc2dfc | 4694 | move_it_by_lines (&it, 1); |
aed328bf KS |
4695 | partial_p = it.current_y > it.last_visible_y; |
4696 | } | |
4697 | ||
bdf4ec93 RS |
4698 | if (charpos == PT && !partial_p |
4699 | && (NILP (Vscroll_preserve_screen_position) | |
4700 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4701 | /* We found PT before we found the display margin, so PT is ok. */ |
4702 | ; | |
66fe93d1 | 4703 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4704 | { |
d3d50620 | 4705 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
940f53e5 | 4706 | start_display (&it, w, start); |
c525d842 CY |
4707 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
4708 | here because we called start_display again and did not | |
4709 | alter it.current_y this time. */ | |
c876b227 SM |
4710 | move_it_to (&it, -1, window_scroll_pixel_based_preserve_x, |
4711 | window_scroll_pixel_based_preserve_y, -1, | |
4712 | MOVE_TO_Y | MOVE_TO_X); | |
940f53e5 RS |
4713 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4714 | } | |
4715 | else | |
4716 | { | |
aed328bf | 4717 | if (partial_p) |
5cdb3cf3 MB |
4718 | /* The last line was only partially visible, so back up two |
4719 | lines to make sure we're on a fully visible line. */ | |
4720 | { | |
e4cc2dfc | 4721 | move_it_by_lines (&it, -2); |
5cdb3cf3 MB |
4722 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4723 | } | |
4724 | else | |
4725 | /* No, the position we saved is OK, so use it. */ | |
4726 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
4727 | } |
4728 | } | |
35928349 | 4729 | bidi_unshelve_cache (itdata, 0); |
5500c422 GM |
4730 | } |
4731 | ||
4732 | ||
4733 | /* Implementation of window_scroll that works based on screen lines. | |
4734 | See the comment of window_scroll for parameter descriptions. */ | |
4735 | ||
4736 | static void | |
56b5d5b1 | 4737 | window_scroll_line_based (Lisp_Object window, int n, bool whole, int noerror) |
7ab12479 JB |
4738 | { |
4739 | register struct window *w = XWINDOW (window); | |
03ab8921 EZ |
4740 | /* Fvertical_motion enters redisplay, which can trigger |
4741 | fontification, which in turn can modify buffer text (e.g., if the | |
4742 | fontification functions replace escape sequences with faces, as | |
4743 | in `grep-mode-font-lock-keywords'). So we use a marker to record | |
4744 | the old point position, to prevent crashes in SET_PT_BOTH. */ | |
4745 | Lisp_Object opoint_marker = Fpoint_marker (); | |
d311d28c | 4746 | register ptrdiff_t pos, pos_byte; |
7ab12479 JB |
4747 | register int ht = window_internal_height (w); |
4748 | register Lisp_Object tem; | |
56b5d5b1 | 4749 | bool lose; |
5500c422 | 4750 | Lisp_Object bolp; |
c54aa166 DA |
4751 | ptrdiff_t startpos = marker_position (w->start); |
4752 | ptrdiff_t startbyte = marker_byte_position (w->start); | |
c876b227 | 4753 | Lisp_Object original_pos = Qnil; |
101d1605 | 4754 | |
d4e7cf01 GM |
4755 | /* If scrolling screen-fulls, compute the number of lines to |
4756 | scroll from the window's height. */ | |
4757 | if (whole) | |
4758 | n *= max (1, ht - next_screen_context_lines); | |
4759 | ||
c876b227 SM |
4760 | if (!NILP (Vscroll_preserve_screen_position)) |
4761 | { | |
4762 | if (window_scroll_preserve_vpos <= 0 | |
1344aad4 TT |
4763 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4764 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c876b227 SM |
4765 | { |
4766 | struct position posit | |
c54aa166 DA |
4767 | = *compute_motion (startpos, startbyte, 0, 0, 0, |
4768 | PT, ht, 0, -1, w->hscroll, 0, w); | |
c876b227 | 4769 | window_scroll_preserve_vpos = posit.vpos; |
80b00b08 | 4770 | window_scroll_preserve_hpos = posit.hpos + w->hscroll; |
c876b227 SM |
4771 | } |
4772 | ||
4773 | original_pos = Fcons (make_number (window_scroll_preserve_hpos), | |
4774 | make_number (window_scroll_preserve_vpos)); | |
4775 | } | |
0a1f771a | 4776 | |
d834a2e9 | 4777 | XSETFASTINT (tem, PT); |
6ffdb539 | 4778 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 4779 | |
265a9e55 | 4780 | if (NILP (tem)) |
7ab12479 | 4781 | { |
cd2be1dd | 4782 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 4783 | startpos = PT; |
c54aa166 | 4784 | startbyte = PT_BYTE; |
7ab12479 JB |
4785 | } |
4786 | ||
c54aa166 | 4787 | SET_PT_BOTH (startpos, startbyte); |
5ce7b543 | 4788 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 4789 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 4790 | pos = PT; |
b73ea88e | 4791 | pos_byte = PT_BYTE; |
7ab12479 | 4792 | bolp = Fbolp (); |
03ab8921 EZ |
4793 | SET_PT_BOTH (marker_position (opoint_marker), |
4794 | marker_byte_position (opoint_marker)); | |
7ab12479 JB |
4795 | |
4796 | if (lose) | |
f8026fd8 JB |
4797 | { |
4798 | if (noerror) | |
4799 | return; | |
4800 | else | |
ba96a5cf | 4801 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 4802 | } |
7ab12479 JB |
4803 | |
4804 | if (pos < ZV) | |
7ab12479 | 4805 | { |
0c7da84e | 4806 | /* Don't use a scroll margin that is negative or too large. */ |
71f02bc5 | 4807 | int this_scroll_margin = |
5f24fa51 | 4808 | max (0, min (scroll_margin, w->total_lines / 4)); |
0c7da84e | 4809 | |
e74aeda8 | 4810 | set_marker_restricted_both (w->start, w->contents, pos, pos_byte); |
c98ff5dd DA |
4811 | w->start_at_line_beg = !NILP (bolp); |
4812 | w->update_mode_line = 1; | |
80b00b08 DA |
4813 | w->last_modified = 0; |
4814 | w->last_overlay_modified = 0; | |
345d45b2 RS |
4815 | /* Set force_start so that redisplay_window will run |
4816 | the window-scroll-functions. */ | |
c98ff5dd | 4817 | w->force_start = 1; |
0c7da84e | 4818 | |
bdf4ec93 RS |
4819 | if (!NILP (Vscroll_preserve_screen_position) |
4820 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 4821 | { |
b73ea88e | 4822 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4823 | Fvertical_motion (original_pos, window); |
0c7da84e | 4824 | } |
101d1605 RS |
4825 | /* If we scrolled forward, put point enough lines down |
4826 | that it is outside the scroll margin. */ | |
4827 | else if (n > 0) | |
0c7da84e | 4828 | { |
101d1605 RS |
4829 | int top_margin; |
4830 | ||
4831 | if (this_scroll_margin > 0) | |
4832 | { | |
b73ea88e | 4833 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4834 | Fvertical_motion (make_number (this_scroll_margin), window); |
4835 | top_margin = PT; | |
4836 | } | |
4837 | else | |
4838 | top_margin = pos; | |
4839 | ||
03ab8921 EZ |
4840 | if (top_margin <= marker_position (opoint_marker)) |
4841 | SET_PT_BOTH (marker_position (opoint_marker), | |
4842 | marker_byte_position (opoint_marker)); | |
5500c422 | 4843 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 4844 | { |
b73ea88e | 4845 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4846 | Fvertical_motion (original_pos, window); |
101d1605 | 4847 | } |
9317a85d | 4848 | else |
335406fc | 4849 | SET_PT (top_margin); |
0c7da84e | 4850 | } |
101d1605 | 4851 | else if (n < 0) |
7ab12479 | 4852 | { |
101d1605 RS |
4853 | int bottom_margin; |
4854 | ||
0c7da84e RS |
4855 | /* If we scrolled backward, put point near the end of the window |
4856 | but not within the scroll margin. */ | |
b73ea88e | 4857 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 4858 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
4859 | if (XFASTINT (tem) == ht - this_scroll_margin) |
4860 | bottom_margin = PT; | |
4861 | else | |
4862 | bottom_margin = PT + 1; | |
4863 | ||
03ab8921 EZ |
4864 | if (bottom_margin > marker_position (opoint_marker)) |
4865 | SET_PT_BOTH (marker_position (opoint_marker), | |
4866 | marker_byte_position (opoint_marker)); | |
7ab12479 | 4867 | else |
101d1605 | 4868 | { |
5500c422 | 4869 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 4870 | { |
b73ea88e | 4871 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4872 | Fvertical_motion (original_pos, window); |
9317a85d RS |
4873 | } |
4874 | else | |
4875 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 4876 | } |
7ab12479 JB |
4877 | } |
4878 | } | |
4879 | else | |
f8026fd8 JB |
4880 | { |
4881 | if (noerror) | |
4882 | return; | |
4883 | else | |
ba96a5cf | 4884 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 4885 | } |
7ab12479 | 4886 | } |
5500c422 GM |
4887 | |
4888 | ||
4889 | /* Scroll selected_window up or down. If N is nil, scroll a | |
4890 | screen-full which is defined as the height of the window minus | |
4891 | next_screen_context_lines. If N is the symbol `-', scroll. | |
4892 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
4893 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
4894 | |
4895 | static void | |
971de7fb | 4896 | scroll_command (Lisp_Object n, int direction) |
7ab12479 | 4897 | { |
d311d28c | 4898 | ptrdiff_t count = SPECPDL_INDEX (); |
7ab12479 | 4899 | |
a54e2c05 | 4900 | eassert (eabs (direction) == 1); |
5500c422 GM |
4901 | |
4902 | /* If selected window's buffer isn't current, make it current for | |
4903 | the moment. But don't screw up if window_scroll gets an error. */ | |
e74aeda8 | 4904 | if (XBUFFER (XWINDOW (selected_window)->contents) != current_buffer) |
95605e15 JB |
4905 | { |
4906 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
e74aeda8 | 4907 | Fset_buffer (XWINDOW (selected_window)->contents); |
5500c422 GM |
4908 | |
4909 | /* Make redisplay consider other windows than just selected_window. */ | |
4910 | ++windows_or_buffers_changed; | |
95605e15 | 4911 | } |
7ab12479 | 4912 | |
265a9e55 | 4913 | if (NILP (n)) |
d4e7cf01 | 4914 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 4915 | else if (EQ (n, Qminus)) |
d4e7cf01 | 4916 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
4917 | else |
4918 | { | |
4919 | n = Fprefix_numeric_value (n); | |
101d1605 | 4920 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 4921 | } |
95605e15 JB |
4922 | |
4923 | unbind_to (count, Qnil); | |
7ab12479 JB |
4924 | } |
4925 | ||
e0965597 | 4926 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
12bb3111 | 4927 | doc: /* Scroll text of selected window upward ARG lines. |
a0a37a6f | 4928 | If ARG is omitted or nil, scroll upward by a near full screen. |
fdb82f93 PJ |
4929 | A near full screen is `next-screen-context-lines' less than a full screen. |
4930 | Negative ARG means scroll downward. | |
4931 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4932 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4933 | (Lisp_Object arg) |
7ab12479 | 4934 | { |
413430c5 | 4935 | scroll_command (arg, 1); |
7ab12479 JB |
4936 | return Qnil; |
4937 | } | |
4938 | ||
e0965597 | 4939 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
12bb3111 | 4940 | doc: /* Scroll text of selected window down ARG lines. |
a0a37a6f | 4941 | If ARG is omitted or nil, scroll down by a near full screen. |
fdb82f93 PJ |
4942 | A near full screen is `next-screen-context-lines' less than a full screen. |
4943 | Negative ARG means scroll upward. | |
4944 | If ARG is the atom `-', scroll upward by nearly full screen. | |
4945 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4946 | (Lisp_Object arg) |
7ab12479 | 4947 | { |
413430c5 | 4948 | scroll_command (arg, -1); |
7ab12479 JB |
4949 | return Qnil; |
4950 | } | |
ccd0664b RS |
4951 | \f |
4952 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 4953 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 4954 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
4955 | showing that buffer is used. |
4956 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4957 | specifies the window. This takes precedence over | |
4958 | `other-window-scroll-buffer'. */) | |
5842a27b | 4959 | (void) |
7ab12479 | 4960 | { |
ccd0664b | 4961 | Lisp_Object window; |
7ab12479 JB |
4962 | |
4963 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 4964 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
4965 | window = Vminibuf_scroll_window; |
4966 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 4967 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
4968 | { |
4969 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 4970 | if (NILP (window)) |
87478b52 | 4971 | window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
4972 | } |
4973 | else | |
dbc4e1c1 JB |
4974 | { |
4975 | /* Nothing specified; look for a neighboring window on the same | |
4976 | frame. */ | |
4977 | window = Fnext_window (selected_window, Qnil, Qnil); | |
4978 | ||
4979 | if (EQ (window, selected_window)) | |
4980 | /* That didn't get us anywhere; look for a window on another | |
4981 | visible frame. */ | |
4982 | do | |
4983 | window = Fnext_window (window, Qnil, Qt); | |
4984 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
4985 | && ! EQ (window, selected_window)); | |
4986 | } | |
4987 | ||
b7826503 | 4988 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
4989 | |
4990 | if (EQ (window, selected_window)) | |
4991 | error ("There is no other window"); | |
4992 | ||
ccd0664b RS |
4993 | return window; |
4994 | } | |
4995 | ||
4996 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
4997 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
4998 | A near full screen is `next-screen-context-lines' less than a full screen. | |
4999 | The next window is the one below the current one; or the one at the top | |
5000 | if the current one is at the bottom. Negative ARG means scroll downward. | |
5001 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5002 | When calling from a program, supply as argument a number, nil, or `-'. | |
5003 | ||
fdb82f93 | 5004 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5005 | showing that buffer, popping the buffer up if necessary. |
5006 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5007 | specifies the window to scroll. This takes precedence over | |
5008 | `other-window-scroll-buffer'. */) | |
5842a27b | 5009 | (Lisp_Object arg) |
ccd0664b | 5010 | { |
d4e7cf01 GM |
5011 | Lisp_Object window; |
5012 | struct window *w; | |
d311d28c | 5013 | ptrdiff_t count = SPECPDL_INDEX (); |
ccd0664b RS |
5014 | |
5015 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5016 | w = XWINDOW (window); |
7ab12479 JB |
5017 | |
5018 | /* Don't screw up if window_scroll gets an error. */ | |
5019 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5020 | ++windows_or_buffers_changed; |
7ab12479 | 5021 | |
e74aeda8 | 5022 | Fset_buffer (w->contents); |
ffcd945e | 5023 | SET_PT_BOTH (marker_position (w->pointm), marker_byte_position (w->pointm)); |
7ab12479 | 5024 | |
413430c5 | 5025 | if (NILP (arg)) |
d4e7cf01 | 5026 | window_scroll (window, 1, 1, 1); |
413430c5 | 5027 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5028 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5029 | else |
5030 | { | |
413430c5 | 5031 | if (CONSP (arg)) |
7d7bbefd | 5032 | arg = XCAR (arg); |
b7826503 | 5033 | CHECK_NUMBER (arg); |
101d1605 | 5034 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5035 | } |
5036 | ||
d3d50620 | 5037 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5038 | unbind_to (count, Qnil); |
7ab12479 JB |
5039 | |
5040 | return Qnil; | |
5041 | } | |
5042 | \f | |
e0965597 | 5043 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 5044 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5045 | Default for ARG is window width minus 2. |
5046 | Value is the total amount of leftward horizontal scrolling in | |
5047 | effect after the change. | |
23fe745a | 5048 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5049 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5050 | will not scroll a window to a column less than the value returned |
dc297565 | 5051 | by this function. This happens in an interactive call. */) |
5842a27b | 5052 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 5053 | { |
c67fa410 | 5054 | struct window *w = XWINDOW (selected_window); |
aa754e6a PE |
5055 | EMACS_INT requested_arg = (NILP (arg) |
5056 | ? window_body_cols (w) - 2 | |
5057 | : XINT (Fprefix_numeric_value (arg))); | |
24a212eb | 5058 | Lisp_Object result = set_window_hscroll (w, w->hscroll + requested_arg); |
c67fa410 | 5059 | |
dc297565 | 5060 | if (!NILP (set_minimum)) |
c67fa410 GM |
5061 | w->min_hscroll = w->hscroll; |
5062 | ||
5063 | return result; | |
7ab12479 JB |
5064 | } |
5065 | ||
e0965597 | 5066 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 5067 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5068 | Default for ARG is window width minus 2. |
5069 | Value is the total amount of leftward horizontal scrolling in | |
5070 | effect after the change. | |
23fe745a | 5071 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5072 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5073 | will not scroll a window to a column less than the value returned |
dc297565 | 5074 | by this function. This happens in an interactive call. */) |
5842a27b | 5075 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 5076 | { |
c67fa410 | 5077 | struct window *w = XWINDOW (selected_window); |
aa754e6a PE |
5078 | EMACS_INT requested_arg = (NILP (arg) |
5079 | ? window_body_cols (w) - 2 | |
5080 | : XINT (Fprefix_numeric_value (arg))); | |
24a212eb | 5081 | Lisp_Object result = set_window_hscroll (w, w->hscroll - requested_arg); |
177c0ea7 | 5082 | |
dc297565 | 5083 | if (!NILP (set_minimum)) |
c67fa410 GM |
5084 | w->min_hscroll = w->hscroll; |
5085 | ||
5086 | return result; | |
7ab12479 JB |
5087 | } |
5088 | ||
fa832261 KS |
5089 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5090 | doc: /* Return the window which was selected when entering the minibuffer. | |
12bb3111 | 5091 | Returns nil, if selected window is not a minibuffer window. */) |
5842a27b | 5092 | (void) |
fa832261 KS |
5093 | { |
5094 | if (minibuf_level > 0 | |
5095 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5096 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5097 | return minibuf_selected_window; | |
5098 | ||
5099 | return Qnil; | |
5100 | } | |
5101 | ||
12c8b416 GM |
5102 | /* Value is the number of lines actually displayed in window W, |
5103 | as opposed to its height. */ | |
5104 | ||
5105 | static int | |
971de7fb | 5106 | displayed_window_lines (struct window *w) |
12c8b416 GM |
5107 | { |
5108 | struct it it; | |
5109 | struct text_pos start; | |
4c1acb95 | 5110 | ptrdiff_t charpos = marker_position (w->start); |
12c8b416 GM |
5111 | int height = window_box_height (w); |
5112 | struct buffer *old_buffer; | |
5113 | int bottom_y; | |
57b3e30b | 5114 | void *itdata = NULL; |
12c8b416 | 5115 | |
e74aeda8 | 5116 | if (XBUFFER (w->contents) != current_buffer) |
12c8b416 GM |
5117 | { |
5118 | old_buffer = current_buffer; | |
e74aeda8 | 5119 | set_buffer_internal (XBUFFER (w->contents)); |
12c8b416 GM |
5120 | } |
5121 | else | |
5122 | old_buffer = NULL; | |
5123 | ||
521b203e GM |
5124 | /* In case W->start is out of the accessible range, do something |
5125 | reasonable. This happens in Info mode when Info-scroll-down | |
5126 | calls (recenter -1) while W->start is 1. */ | |
4c1acb95 | 5127 | if (charpos < BEGV) |
521b203e | 5128 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); |
4c1acb95 | 5129 | else if (charpos > ZV) |
521b203e GM |
5130 | SET_TEXT_POS (start, ZV, ZV_BYTE); |
5131 | else | |
d3d50620 | 5132 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
521b203e | 5133 | |
57b3e30b | 5134 | itdata = bidi_shelve_cache (); |
12c8b416 GM |
5135 | start_display (&it, w, start); |
5136 | move_it_vertically (&it, height); | |
c8bc6f65 | 5137 | bottom_y = line_bottom_y (&it); |
35928349 | 5138 | bidi_unshelve_cache (itdata, 0); |
12c8b416 | 5139 | |
1de65f51 RS |
5140 | /* rms: On a non-window display, |
5141 | the value of it.vpos at the bottom of the screen | |
5142 | seems to be 1 larger than window_box_height (w). | |
5143 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5144 | when ZV is on the last screen line | |
5145 | moves to the previous screen line instead of the last one. */ | |
d3d50620 | 5146 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) |
1de65f51 RS |
5147 | height++; |
5148 | ||
12c8b416 GM |
5149 | /* Add in empty lines at the bottom of the window. */ |
5150 | if (bottom_y < height) | |
5151 | { | |
949cf20f | 5152 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5153 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5154 | } |
5155 | ||
c8bc6f65 GM |
5156 | if (old_buffer) |
5157 | set_buffer_internal (old_buffer); | |
5158 | ||
12c8b416 GM |
5159 | return it.vpos; |
5160 | } | |
5161 | ||
5162 | ||
a7ca3326 | 5163 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
666e158e | 5164 | doc: /* Center point in selected window and maybe redisplay frame. |
3b166f09 | 5165 | With a numeric prefix argument ARG, recenter putting point on screen line ARG |
12bb3111 | 5166 | relative to the selected window. If ARG is negative, it counts up from the |
fdb82f93 PJ |
5167 | bottom of the window. (ARG should be less than the height of the window.) |
5168 | ||
666e158e MB |
5169 | If ARG is omitted or nil, then recenter with point on the middle line of |
5170 | the selected window; if the variable `recenter-redisplay' is non-nil, | |
5171 | also erase the entire frame and redraw it (when `auto-resize-tool-bars' | |
5172 | is set to `grow-only', this resets the tool-bar's height to the minimum | |
5173 | height needed); if `recenter-redisplay' has the special value `tty', | |
53524d93 | 5174 | then only tty frames are redrawn. |
7d1d98ee | 5175 | |
fdb82f93 PJ |
5176 | Just C-u as prefix means put point in the center of the window |
5177 | and redisplay normally--don't erase and redraw the frame. */) | |
5842a27b | 5178 | (register Lisp_Object arg) |
7ab12479 | 5179 | { |
6df47b59 | 5180 | struct window *w = XWINDOW (selected_window); |
e74aeda8 | 5181 | struct buffer *buf = XBUFFER (w->contents); |
478292ed | 5182 | struct buffer *obuf = current_buffer; |
d7e6881a | 5183 | bool center_p = 0; |
d311d28c | 5184 | ptrdiff_t charpos, bytepos; |
71f02bc5 | 5185 | EMACS_INT iarg IF_LINT (= 0); |
f6b43440 | 5186 | int this_scroll_margin; |
7ab12479 | 5187 | |
0fa5d25b RS |
5188 | /* If redisplay is suppressed due to an error, try again. */ |
5189 | obuf->display_error_modiff = 0; | |
5190 | ||
413430c5 | 5191 | if (NILP (arg)) |
7ab12479 | 5192 | { |
666e158e MB |
5193 | if (!NILP (Vrecenter_redisplay) |
5194 | && (!EQ (Vrecenter_redisplay, Qtty) | |
5195 | || !NILP (Ftty_type (selected_frame)))) | |
5196 | { | |
ebfa62c0 | 5197 | ptrdiff_t i; |
f02d6d5c | 5198 | |
666e158e MB |
5199 | /* Invalidate pixel data calculated for all compositions. */ |
5200 | for (i = 0; i < n_compositions; i++) | |
5201 | composition_table[i]->font = NULL; | |
7ab12479 | 5202 | |
666e158e MB |
5203 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5204 | ||
5205 | Fredraw_frame (WINDOW_FRAME (w)); | |
5206 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
5207 | } | |
7d1d98ee | 5208 | |
6df47b59 | 5209 | center_p = 1; |
7ab12479 | 5210 | } |
413430c5 | 5211 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5212 | center_p = 1; |
7ab12479 JB |
5213 | else |
5214 | { | |
413430c5 | 5215 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5216 | CHECK_NUMBER (arg); |
ae12ecd7 | 5217 | iarg = XINT (arg); |
7ab12479 JB |
5218 | } |
5219 | ||
478292ed | 5220 | set_buffer_internal (buf); |
7ab12479 | 5221 | |
f6b43440 RS |
5222 | /* Do this after making BUF current |
5223 | in case scroll_margin is buffer-local. */ | |
71f02bc5 | 5224 | this_scroll_margin = |
5f24fa51 | 5225 | max (0, min (scroll_margin, w->total_lines / 4)); |
f6b43440 | 5226 | |
521b203e | 5227 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5228 | have variable-height lines and centering point on the basis of |
5229 | line counts would lead to strange effects. */ | |
d3d50620 | 5230 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5231 | { |
6df47b59 GM |
5232 | if (center_p) |
5233 | { | |
521b203e GM |
5234 | struct it it; |
5235 | struct text_pos pt; | |
57b3e30b | 5236 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5237 | |
521b203e GM |
5238 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5239 | start_display (&it, w, pt); | |
f204989e | 5240 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5241 | charpos = IT_CHARPOS (it); |
5242 | bytepos = IT_BYTEPOS (it); | |
35928349 | 5243 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5244 | } |
f6b43440 | 5245 | else if (iarg < 0) |
6df47b59 | 5246 | { |
521b203e GM |
5247 | struct it it; |
5248 | struct text_pos pt; | |
5895d7b9 | 5249 | ptrdiff_t nlines = min (PTRDIFF_MAX, -iarg); |
f204989e KS |
5250 | int extra_line_spacing; |
5251 | int h = window_box_height (w); | |
57b3e30b | 5252 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5253 | |
f6b43440 RS |
5254 | iarg = - max (-iarg, this_scroll_margin); |
5255 | ||
521b203e GM |
5256 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5257 | start_display (&it, w, pt); | |
f204989e KS |
5258 | |
5259 | /* Be sure we have the exact height of the full line containing PT. */ | |
e4cc2dfc | 5260 | move_it_by_lines (&it, 0); |
521b203e | 5261 | |
d466fa4d | 5262 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5263 | height minus what's displayed in the line containing PT, |
5264 | and the lines below. */ | |
f204989e KS |
5265 | it.current_y = 0; |
5266 | it.vpos = 0; | |
e4cc2dfc | 5267 | move_it_by_lines (&it, nlines); |
d466fa4d | 5268 | |
f204989e KS |
5269 | if (it.vpos == nlines) |
5270 | h -= it.current_y; | |
5271 | else | |
5272 | { | |
5273 | /* Last line has no newline */ | |
5274 | h -= line_bottom_y (&it); | |
5275 | it.vpos++; | |
5276 | } | |
5277 | ||
5278 | /* Don't reserve space for extra line spacing of last line. */ | |
5279 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5280 | |
5281 | /* If we can't move down NLINES lines because we hit | |
5282 | the end of the buffer, count in some empty lines. */ | |
5283 | if (it.vpos < nlines) | |
f204989e KS |
5284 | { |
5285 | nlines -= it.vpos; | |
5286 | extra_line_spacing = it.extra_line_spacing; | |
5287 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5288 | } | |
5289 | if (h <= 0) | |
57b3e30b | 5290 | { |
35928349 | 5291 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
5292 | return Qnil; |
5293 | } | |
201c831a | 5294 | |
f204989e | 5295 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5296 | start_display (&it, w, pt); |
f204989e KS |
5297 | it.current_y = 0; |
5298 | move_it_vertically_backward (&it, h); | |
5299 | ||
5300 | /* If extra line spacing is present, we may move too far | |
5301 | back. This causes the last line to be only partially | |
5302 | visible (which triggers redisplay to recenter that line | |
5303 | in the middle), so move forward. | |
5304 | But ignore extra line spacing on last line, as it is not | |
5305 | considered to be part of the visible height of the line. | |
5306 | */ | |
5307 | h += extra_line_spacing; | |
5308 | while (-it.current_y > h) | |
e4cc2dfc | 5309 | move_it_by_lines (&it, 1); |
f204989e | 5310 | |
521b203e GM |
5311 | charpos = IT_CHARPOS (it); |
5312 | bytepos = IT_BYTEPOS (it); | |
57b3e30b | 5313 | |
35928349 | 5314 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5315 | } |
521b203e GM |
5316 | else |
5317 | { | |
5318 | struct position pos; | |
f6b43440 | 5319 | |
f6b43440 RS |
5320 | iarg = max (iarg, this_scroll_margin); |
5321 | ||
c54aa166 | 5322 | pos = *vmotion (PT, PT_BYTE, -iarg, w); |
521b203e GM |
5323 | charpos = pos.bufpos; |
5324 | bytepos = pos.bytepos; | |
5325 | } | |
5326 | } | |
5327 | else | |
5328 | { | |
5329 | struct position pos; | |
5330 | int ht = window_internal_height (w); | |
5331 | ||
5332 | if (center_p) | |
a4429c5b | 5333 | iarg = ht / 2; |
f567c488 KS |
5334 | else if (iarg < 0) |
5335 | iarg += ht; | |
f6b43440 RS |
5336 | |
5337 | /* Don't let it get into the margin at either top or bottom. */ | |
2dd61a9b DA |
5338 | iarg = clip_to_bounds (this_scroll_margin, iarg, |
5339 | ht - this_scroll_margin - 1); | |
177c0ea7 | 5340 | |
c54aa166 | 5341 | pos = *vmotion (PT, PT_BYTE, - iarg, w); |
6df47b59 GM |
5342 | charpos = pos.bufpos; |
5343 | bytepos = pos.bytepos; | |
5344 | } | |
5345 | ||
5346 | /* Set the new window start. */ | |
e74aeda8 | 5347 | set_marker_both (w->start, w->contents, charpos, bytepos); |
9d93ce29 | 5348 | w->window_end_valid = 0; |
177c0ea7 | 5349 | |
c98ff5dd | 5350 | w->optional_new_start = 1; |
95605b1b | 5351 | |
c98ff5dd DA |
5352 | w->start_at_line_beg = (bytepos == BEGV_BYTE || |
5353 | FETCH_BYTE (bytepos - 1) == '\n'); | |
177c0ea7 | 5354 | |
478292ed | 5355 | set_buffer_internal (obuf); |
7ab12479 JB |
5356 | return Qnil; |
5357 | } | |
b7617575 | 5358 | |
81fe0836 | 5359 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5360 | 0, 1, 0, |
5361 | doc: /* Return the height in lines of the text display area of WINDOW. | |
52162052 | 5362 | WINDOW must be a live window and defaults to the selected one. |
8fef9de1 | 5363 | |
105216ed CY |
5364 | The returned height does not include the mode line, any header line, |
5365 | nor any partial-height lines at the bottom of the text area. */) | |
5842a27b | 5366 | (Lisp_Object window) |
81fe0836 | 5367 | { |
52162052 | 5368 | struct window *w = decode_live_window (window); |
81fe0836 | 5369 | int pixel_height = window_box_height (w); |
d3d50620 | 5370 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5371 | return make_number (line_height); |
5372 | } | |
5373 | ||
5374 | ||
7ab12479 JB |
5375 | \f |
5376 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5377 | 1, 1, "P", |
5378 | doc: /* Position point relative to window. | |
87e68db4 JB |
5379 | ARG nil means position point at center of window. |
5380 | Else, ARG specifies vertical position within the window; | |
fdb82f93 | 5381 | zero means top of window, negative means relative to bottom of window. */) |
5842a27b | 5382 | (Lisp_Object arg) |
7ab12479 | 5383 | { |
b7617575 GM |
5384 | struct window *w = XWINDOW (selected_window); |
5385 | int lines, start; | |
540b6aa0 | 5386 | Lisp_Object window; |
f6b43440 RS |
5387 | #if 0 |
5388 | int this_scroll_margin; | |
5389 | #endif | |
7ab12479 | 5390 | |
e74aeda8 DA |
5391 | if (!(BUFFERP (w->contents) && XBUFFER (w->contents) == current_buffer)) |
5392 | /* This test is needed to make sure PT/PT_BYTE make sense in w->contents | |
794b75c7 SM |
5393 | when passed below to set_marker_both. */ |
5394 | error ("move-to-window-line called from unrelated buffer"); | |
6dc1d2d3 | 5395 | |
b7617575 | 5396 | window = selected_window; |
d3d50620 | 5397 | start = marker_position (w->start); |
7ab12479 JB |
5398 | if (start < BEGV || start > ZV) |
5399 | { | |
b7617575 | 5400 | int height = window_internal_height (w); |
cd2be1dd | 5401 | Fvertical_motion (make_number (- (height / 2)), window); |
e74aeda8 | 5402 | set_marker_both (w->start, w->contents, PT, PT_BYTE); |
c98ff5dd DA |
5403 | w->start_at_line_beg = !NILP (Fbolp ()); |
5404 | w->force_start = 1; | |
7ab12479 JB |
5405 | } |
5406 | else | |
d3d50620 | 5407 | Fgoto_char (w->start); |
7ab12479 | 5408 | |
b7617575 | 5409 | lines = displayed_window_lines (w); |
f6b43440 RS |
5410 | |
5411 | #if 0 | |
71f02bc5 | 5412 | this_scroll_margin = max (0, min (scroll_margin, lines / 4)); |
f6b43440 RS |
5413 | #endif |
5414 | ||
b7617575 GM |
5415 | if (NILP (arg)) |
5416 | XSETFASTINT (arg, lines / 2); | |
5417 | else | |
5418 | { | |
71f02bc5 | 5419 | EMACS_INT iarg = XINT (Fprefix_numeric_value (arg)); |
f6b43440 RS |
5420 | |
5421 | if (iarg < 0) | |
5422 | iarg = iarg + lines; | |
5423 | ||
5424 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5425 | to a place inside the scroll margins (which would cause the | |
5426 | next redisplay to scroll). I wrote this code, but then concluded | |
5427 | it is probably better not to install it. However, it is here | |
5428 | inside #if 0 so as not to lose it. -- rms. */ | |
5429 | ||
5430 | /* Don't let it get into the margin at either top or bottom. */ | |
5431 | iarg = max (iarg, this_scroll_margin); | |
5432 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5433 | #endif | |
5434 | ||
5435 | arg = make_number (iarg); | |
b7617575 GM |
5436 | } |
5437 | ||
c8bc6f65 | 5438 | /* Skip past a partially visible first line. */ |
163784df | 5439 | if (w->vscroll) |
163784df MB |
5440 | XSETINT (arg, XINT (arg) + 1); |
5441 | ||
540b6aa0 | 5442 | return Fvertical_motion (arg, window); |
7ab12479 | 5443 | } |
5500c422 GM |
5444 | |
5445 | ||
7ab12479 | 5446 | \f |
5500c422 GM |
5447 | /*********************************************************************** |
5448 | Window Configuration | |
5449 | ***********************************************************************/ | |
5450 | ||
7ab12479 JB |
5451 | struct save_window_data |
5452 | { | |
b102ceb1 | 5453 | struct vectorlike_header header; |
bdc727bf | 5454 | Lisp_Object selected_frame; |
7ab12479 JB |
5455 | Lisp_Object current_window; |
5456 | Lisp_Object current_buffer; | |
5457 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5458 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5459 | Lisp_Object root_window; |
bdc727bf | 5460 | Lisp_Object focus_frame; |
cbff28e8 RS |
5461 | /* A vector, each of whose elements is a struct saved_window |
5462 | for one window. */ | |
7ab12479 | 5463 | Lisp_Object saved_windows; |
b05b4e27 SM |
5464 | |
5465 | /* All fields above are traced by the GC. | |
5466 | From `fame-cols' down, the fields are ignored by the GC. */ | |
5467 | ||
5468 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
5469 | int frame_tool_bar_lines; | |
7ab12479 | 5470 | }; |
ff06df24 | 5471 | |
cbff28e8 | 5472 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 5473 | struct saved_window |
ea68264b | 5474 | { |
b102ceb1 | 5475 | struct vectorlike_header header; |
496e208e | 5476 | |
28545e04 | 5477 | Lisp_Object window, buffer, start, pointm, mark; |
949cf20f | 5478 | Lisp_Object left_col, top_line, total_cols, total_lines; |
496e208e | 5479 | Lisp_Object normal_cols, normal_lines; |
949cf20f | 5480 | Lisp_Object hscroll, min_hscroll; |
ea68264b GM |
5481 | Lisp_Object parent, prev; |
5482 | Lisp_Object start_at_line_beg; | |
5483 | Lisp_Object display_table; | |
949cf20f KS |
5484 | Lisp_Object left_margin_cols, right_margin_cols; |
5485 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
562dd5e9 | 5486 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type, dedicated; |
b6f67890 | 5487 | Lisp_Object combination_limit, window_parameters; |
ea68264b GM |
5488 | }; |
5489 | ||
7ab12479 JB |
5490 | #define SAVED_WINDOW_N(swv,n) \ |
5491 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
5492 | ||
5493 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 | 5494 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5842a27b | 5495 | (Lisp_Object object) |
7ab12479 | 5496 | { |
6ad0381c | 5497 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
5498 | } |
5499 | ||
3f8ab7bd | 5500 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 | 5501 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5842a27b | 5502 | (Lisp_Object config) |
3f8ab7bd RS |
5503 | { |
5504 | register struct save_window_data *data; | |
5505 | struct Lisp_Vector *saved_windows; | |
5506 | ||
663fbbba | 5507 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
5508 | |
5509 | data = (struct save_window_data *) XVECTOR (config); | |
5510 | saved_windows = XVECTOR (data->saved_windows); | |
d3d50620 | 5511 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
3f8ab7bd RS |
5512 | } |
5513 | ||
a7ca3326 | 5514 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
5515 | Sset_window_configuration, 1, 1, 0, |
5516 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
5517 | CONFIGURATION must be a value previously returned | |
5518 | by `current-window-configuration' (which see). | |
5519 | If CONFIGURATION was made from a frame that is now deleted, | |
5520 | only frame-independent values can be restored. In this case, | |
5521 | the return value is nil. Otherwise the value is t. */) | |
5842a27b | 5522 | (Lisp_Object configuration) |
7ab12479 | 5523 | { |
7ab12479 JB |
5524 | register struct save_window_data *data; |
5525 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 5526 | Lisp_Object new_current_buffer; |
fd482be5 | 5527 | Lisp_Object frame; |
a10c8269 | 5528 | struct frame *f; |
d311d28c | 5529 | ptrdiff_t old_point = -1; |
7ab12479 | 5530 | |
663fbbba | 5531 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 5532 | |
2f83aebe | 5533 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
5534 | saved_windows = XVECTOR (data->saved_windows); |
5535 | ||
7ab12479 | 5536 | new_current_buffer = data->current_buffer; |
e578f381 | 5537 | if (!BUFFER_LIVE_P (XBUFFER (new_current_buffer))) |
7ab12479 | 5538 | new_current_buffer = Qnil; |
72695e47 | 5539 | else |
73cadfc1 DK |
5540 | { |
5541 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
5542 | /* The code further down "preserves point" by saving here PT in |
5543 | old_point and then setting it later back into PT. When the | |
5544 | current-selected-window and the final-selected-window both show | |
5545 | the current buffer, this suffers from the problem that the | |
5546 | current PT is the window-point of the current-selected-window, | |
5547 | while the final PT is the point of the final-selected-window, so | |
5548 | this copy from one PT to the other would end up moving the | |
5549 | window-point of the final-selected-window to the window-point of | |
5550 | the current-selected-window. So we have to be careful which | |
5551 | point of the current-buffer we copy into old_point. */ | |
e74aeda8 | 5552 | if (EQ (XWINDOW (data->current_window)->contents, new_current_buffer) |
e67a1dea | 5553 | && WINDOWP (selected_window) |
e74aeda8 | 5554 | && EQ (XWINDOW (selected_window)->contents, new_current_buffer) |
e67a1dea | 5555 | && !EQ (selected_window, data->current_window)) |
4c1acb95 | 5556 | old_point = marker_position (XWINDOW (data->current_window)->pointm); |
e67a1dea SM |
5557 | else |
5558 | old_point = PT; | |
73cadfc1 | 5559 | else |
203eb0aa SM |
5560 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
5561 | point in new_current_buffer as of the last time this buffer was | |
5562 | used. This can be non-deterministic since it can be changed by | |
5563 | things like jit-lock by mere temporary selection of some random | |
5564 | window that happens to show this buffer. | |
5565 | So if possible we want this arbitrary choice of "which point" to | |
5566 | be the one from the to-be-selected-window so as to prevent this | |
5567 | window's cursor from being copied from another window. */ | |
e74aeda8 | 5568 | if (EQ (XWINDOW (data->current_window)->contents, new_current_buffer) |
203eb0aa SM |
5569 | /* If current_window = selected_window, its point is in BUF_PT. */ |
5570 | && !EQ (selected_window, data->current_window)) | |
4c1acb95 | 5571 | old_point = marker_position (XWINDOW (data->current_window)->pointm); |
203eb0aa SM |
5572 | else |
5573 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 5574 | } |
7ab12479 | 5575 | |
d3d50620 | 5576 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
fd482be5 | 5577 | f = XFRAME (frame); |
177c0ea7 | 5578 | |
fd482be5 JB |
5579 | /* If f is a dead frame, don't bother rebuilding its window tree. |
5580 | However, there is other stuff we should still try to do below. */ | |
5581 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 5582 | { |
6198ccd0 MR |
5583 | Lisp_Object window; |
5584 | Lisp_Object dead_windows = Qnil; | |
6a6ee00d | 5585 | register Lisp_Object tem, par, pers; |
fd482be5 JB |
5586 | register struct window *w; |
5587 | register struct saved_window *p; | |
5500c422 GM |
5588 | struct window *root_window; |
5589 | struct window **leaf_windows; | |
5590 | int n_leaf_windows; | |
71f02bc5 PE |
5591 | ptrdiff_t k; |
5592 | int i, n; | |
fd482be5 JB |
5593 | |
5594 | /* If the frame has been resized since this window configuration was | |
5595 | made, we change the frame to the size specified in the | |
5596 | configuration, restore the configuration, and then resize it | |
5597 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
5598 | int previous_frame_lines = FRAME_LINES (f); |
5599 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 5600 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 5601 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 5602 | |
37b9743e MR |
5603 | /* Don't do this within the main loop below: This may call Lisp |
5604 | code and is thus potentially unsafe while input is blocked. */ | |
5605 | for (k = 0; k < saved_windows->header.size; k++) | |
5606 | { | |
5607 | p = SAVED_WINDOW_N (saved_windows, k); | |
5608 | window = p->window; | |
5609 | w = XWINDOW (window); | |
e74aeda8 DA |
5610 | if (BUFFERP (w->contents) |
5611 | && !EQ (w->contents, p->buffer) | |
e578f381 | 5612 | && BUFFER_LIVE_P (XBUFFER (p->buffer))) |
37b9743e MR |
5613 | /* If a window we restore gets another buffer, record the |
5614 | window's old buffer. */ | |
5615 | call1 (Qrecord_window_buffer, window); | |
5616 | } | |
5617 | ||
d2b35234 RS |
5618 | /* The mouse highlighting code could get screwed up |
5619 | if it runs during this. */ | |
4d7e6e51 | 5620 | block_input (); |
d2b35234 | 5621 | |
b05b4e27 SM |
5622 | if (data->frame_lines != previous_frame_lines |
5623 | || data->frame_cols != previous_frame_cols) | |
5624 | change_frame_size (f, data->frame_lines, | |
5625 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 5626 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 5627 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 5628 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
5629 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
5630 | make_number (0)); | |
4314246f | 5631 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 5632 | if (data->frame_tool_bar_lines |
9ea173e8 | 5633 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
5634 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
5635 | make_number (0)); | |
4314246f | 5636 | #endif |
217f2871 | 5637 | #endif |
fd482be5 | 5638 | |
a46c0153 RS |
5639 | /* "Swap out" point from the selected window's buffer |
5640 | into the window itself. (Normally the pointm of the selected | |
5641 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
5642 | restoring the window contents, and prevent it from |
5643 | being done later on when we select a new window. */ | |
e74aeda8 | 5644 | if (! NILP (XWINDOW (selected_window)->contents)) |
596ae0cf RS |
5645 | { |
5646 | w = XWINDOW (selected_window); | |
d3d50620 | 5647 | set_marker_both (w->pointm, |
e74aeda8 DA |
5648 | w->contents, |
5649 | BUF_PT (XBUFFER (w->contents)), | |
5650 | BUF_PT_BYTE (XBUFFER (w->contents))); | |
596ae0cf RS |
5651 | } |
5652 | ||
fd482be5 | 5653 | windows_or_buffers_changed++; |
29aeee73 | 5654 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 5655 | |
5500c422 | 5656 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 5657 | is a serious redisplay flickering problem. What we would |
5500c422 | 5658 | really like to do is to free only those matrices not reused |
9d14503e | 5659 | below. */ |
5500c422 | 5660 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); |
38182d90 PE |
5661 | leaf_windows = alloca (count_windows (root_window) |
5662 | * sizeof *leaf_windows); | |
5500c422 GM |
5663 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); |
5664 | ||
fd482be5 JB |
5665 | /* Kludge Alert! |
5666 | Mark all windows now on frame as "deleted". | |
5667 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 5668 | |
fd482be5 JB |
5669 | Save their current buffers in their height fields, since we may |
5670 | need it later, if a buffer saved in the configuration is now | |
5671 | dead. */ | |
be7f5545 | 5672 | delete_all_child_windows (FRAME_ROOT_WINDOW (f)); |
fd482be5 | 5673 | |
eab3844f | 5674 | for (k = 0; k < saved_windows->header.size; k++) |
fd482be5 JB |
5675 | { |
5676 | p = SAVED_WINDOW_N (saved_windows, k); | |
6198ccd0 MR |
5677 | window = p->window; |
5678 | w = XWINDOW (window); | |
e8c17b81 | 5679 | wset_next (w, Qnil); |
7ab12479 | 5680 | |
fd482be5 | 5681 | if (!NILP (p->parent)) |
e8c17b81 PE |
5682 | wset_parent |
5683 | (w, SAVED_WINDOW_N (saved_windows, XFASTINT (p->parent))->window); | |
fd482be5 | 5684 | else |
e8c17b81 | 5685 | wset_parent (w, Qnil); |
7ab12479 | 5686 | |
fd482be5 | 5687 | if (!NILP (p->prev)) |
7ab12479 | 5688 | { |
e8c17b81 PE |
5689 | wset_prev |
5690 | (w, SAVED_WINDOW_N (saved_windows, XFASTINT (p->prev))->window); | |
5691 | wset_next (XWINDOW (w->prev), p->window); | |
fd482be5 JB |
5692 | } |
5693 | else | |
5694 | { | |
e8c17b81 | 5695 | wset_prev (w, Qnil); |
d3d50620 | 5696 | if (!NILP (w->parent)) |
e74aeda8 DA |
5697 | wset_combination (XWINDOW (w->parent), |
5698 | (XINT (p->total_cols) | |
5699 | != XWINDOW (w->parent)->total_cols), | |
5700 | p->window); | |
fd482be5 JB |
5701 | } |
5702 | ||
095d384d DA |
5703 | /* If we squirreled away the buffer, restore it now. */ |
5704 | if (BUFFERP (w->combination_limit)) | |
5705 | wset_buffer (w, w->combination_limit); | |
5f24fa51 DA |
5706 | w->left_col = XFASTINT (p->left_col); |
5707 | w->top_line = XFASTINT (p->top_line); | |
5708 | w->total_cols = XFASTINT (p->total_cols); | |
5709 | w->total_lines = XFASTINT (p->total_lines); | |
e8c17b81 PE |
5710 | wset_normal_cols (w, p->normal_cols); |
5711 | wset_normal_lines (w, p->normal_lines); | |
80b00b08 DA |
5712 | w->hscroll = XFASTINT (p->hscroll); |
5713 | w->min_hscroll = XFASTINT (p->min_hscroll); | |
e8c17b81 PE |
5714 | wset_display_table (w, p->display_table); |
5715 | wset_left_margin_cols (w, p->left_margin_cols); | |
5716 | wset_right_margin_cols (w, p->right_margin_cols); | |
5717 | wset_left_fringe_width (w, p->left_fringe_width); | |
5718 | wset_right_fringe_width (w, p->right_fringe_width); | |
2af3565e | 5719 | w->fringes_outside_margins = !NILP (p->fringes_outside_margins); |
e8c17b81 PE |
5720 | wset_scroll_bar_width (w, p->scroll_bar_width); |
5721 | wset_vertical_scroll_bar_type (w, p->vertical_scroll_bar_type); | |
5722 | wset_dedicated (w, p->dedicated); | |
5723 | wset_combination_limit (w, p->combination_limit); | |
6a6ee00d MR |
5724 | /* Restore any window parameters that have been saved. |
5725 | Parameters that have not been saved are left alone. */ | |
5726 | for (tem = p->window_parameters; CONSP (tem); tem = XCDR (tem)) | |
5727 | { | |
5728 | pers = XCAR (tem); | |
5729 | if (CONSP (pers)) | |
5730 | { | |
5731 | if (NILP (XCDR (pers))) | |
5732 | { | |
d3d50620 | 5733 | par = Fassq (XCAR (pers), w->window_parameters); |
6a6ee00d MR |
5734 | if (CONSP (par) && !NILP (XCDR (par))) |
5735 | /* Reset a parameter to nil if and only if it | |
5736 | has a non-nil association. Don't make new | |
5737 | associations. */ | |
5738 | Fsetcdr (par, Qnil); | |
5739 | } | |
5740 | else | |
5741 | /* Always restore a non-nil value. */ | |
5742 | Fset_window_parameter (window, XCAR (pers), XCDR (pers)); | |
5743 | } | |
5744 | } | |
5745 | ||
80b00b08 DA |
5746 | w->last_modified = 0; |
5747 | w->last_overlay_modified = 0; | |
fd482be5 | 5748 | |
e74aeda8 | 5749 | if (BUFFERP (p->buffer) && BUFFER_LIVE_P (XBUFFER (p->buffer))) |
6198ccd0 MR |
5750 | /* If saved buffer is alive, install it. */ |
5751 | { | |
e8c17b81 PE |
5752 | wset_buffer (w, p->buffer); |
5753 | w->start_at_line_beg = !NILP (p->start_at_line_beg); | |
e74aeda8 | 5754 | set_marker_restricted (w->start, p->start, w->contents); |
e8c17b81 | 5755 | set_marker_restricted (w->pointm, p->pointm, |
e74aeda8 DA |
5756 | w->contents); |
5757 | Fset_marker (BVAR (XBUFFER (w->contents), mark), | |
5758 | p->mark, w->contents); | |
e8c17b81 PE |
5759 | |
5760 | /* As documented in Fcurrent_window_configuration, don't | |
5761 | restore the location of point in the buffer which was | |
5762 | current when the window configuration was recorded. */ | |
5763 | if (!EQ (p->buffer, new_current_buffer) | |
5764 | && XBUFFER (p->buffer) == current_buffer) | |
5765 | Fgoto_char (w->pointm); | |
077288cf | 5766 | } |
e74aeda8 DA |
5767 | else if (BUFFERP (w->contents) && BUFFER_LIVE_P (XBUFFER (w->contents))) |
5768 | /* Keep window's old buffer; make sure the markers are real. */ | |
5769 | { | |
5770 | /* Set window markers at start of visible range. */ | |
5771 | if (XMARKER (w->start)->buffer == 0) | |
5772 | set_marker_restricted_both (w->start, w->contents, 0, 0); | |
5773 | if (XMARKER (w->pointm)->buffer == 0) | |
5774 | set_marker_restricted_both | |
5775 | (w->pointm, w->contents, | |
5776 | BUF_PT (XBUFFER (w->contents)), | |
5777 | BUF_PT_BYTE (XBUFFER (w->contents))); | |
5778 | w->start_at_line_beg = 1; | |
5779 | } | |
5780 | else if (!NILP (w->start)) | |
5781 | /* Leaf window has no live buffer, get one. */ | |
fd482be5 | 5782 | { |
6198ccd0 MR |
5783 | /* Get the buffer via other_buffer_safely in order to |
5784 | avoid showing an unimportant buffer and, if necessary, to | |
5785 | recreate *scratch* in the course (part of Juanma's bs-show | |
5786 | scenario from March 2011). */ | |
e8c17b81 | 5787 | wset_buffer (w, other_buffer_safely (Fcurrent_buffer ())); |
6198ccd0 MR |
5788 | /* This will set the markers to beginning of visible |
5789 | range. */ | |
e74aeda8 DA |
5790 | set_marker_restricted_both (w->start, w->contents, 0, 0); |
5791 | set_marker_restricted_both (w->pointm, w->contents, 0, 0); | |
c98ff5dd | 5792 | w->start_at_line_beg = 1; |
d3d50620 | 5793 | if (!NILP (w->dedicated)) |
6198ccd0 MR |
5794 | /* Record this window as dead. */ |
5795 | dead_windows = Fcons (window, dead_windows); | |
5796 | /* Make sure window is no more dedicated. */ | |
e8c17b81 | 5797 | wset_dedicated (w, Qnil); |
7ab12479 JB |
5798 | } |
5799 | } | |
9ace597f | 5800 | |
f00af5b1 | 5801 | fset_root_window (f, data->root_window); |
a46c0153 RS |
5802 | /* Arrange *not* to restore point in the buffer that was |
5803 | current when the window configuration was saved. */ | |
e74aeda8 | 5804 | if (EQ (XWINDOW (data->current_window)->contents, new_current_buffer)) |
d3d50620 | 5805 | set_marker_restricted (XWINDOW (data->current_window)->pointm, |
18787f5e | 5806 | make_number (old_point), |
e74aeda8 | 5807 | XWINDOW (data->current_window)->contents); |
177c0ea7 | 5808 | |
6198ccd0 MR |
5809 | /* In the following call to `select-window', prevent "swapping out |
5810 | point" in the old selected window using the buffer that has | |
5811 | been restored into it. We already swapped out that point from | |
5812 | that window's old buffer. */ | |
e6b84b30 | 5813 | select_window (data->current_window, Qnil, 1); |
e74aeda8 | 5814 | BVAR (XBUFFER (XWINDOW (selected_window)->contents), last_selected_window) |
396a830c | 5815 | = selected_window; |
7ab12479 | 5816 | |
db269683 | 5817 | if (NILP (data->focus_frame) |
017b2bad | 5818 | || (FRAMEP (data->focus_frame) |
db269683 JB |
5819 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
5820 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 5821 | |
fd482be5 | 5822 | /* Set the screen height to the value it had before this function. */ |
949cf20f KS |
5823 | if (previous_frame_lines != FRAME_LINES (f) |
5824 | || previous_frame_cols != FRAME_COLS (f)) | |
5825 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 5826 | 0, 0, 0); |
e3678b64 | 5827 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 5828 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
5829 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
5830 | make_number (0)); | |
4314246f | 5831 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5832 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
5833 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
5834 | make_number (0)); | |
4314246f | 5835 | #endif |
217f2871 | 5836 | #endif |
d2b35234 | 5837 | |
5500c422 | 5838 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
5839 | for (i = n = 0; i < n_leaf_windows; ++i) |
5840 | { | |
e74aeda8 DA |
5841 | if (NILP (leaf_windows[i]->contents)) |
5842 | free_window_matrices (leaf_windows[i]); | |
5843 | else if (EQ (leaf_windows[i]->contents, new_current_buffer)) | |
c4280705 GM |
5844 | ++n; |
5845 | } | |
177c0ea7 | 5846 | |
5500c422 | 5847 | adjust_glyphs (f); |
4d7e6e51 | 5848 | unblock_input (); |
756b6edc | 5849 | |
6198ccd0 MR |
5850 | /* Scan dead buffer windows. */ |
5851 | for (; CONSP (dead_windows); dead_windows = XCDR (dead_windows)) | |
5852 | { | |
5853 | window = XCAR (dead_windows); | |
5854 | if (WINDOW_LIVE_P (window) && !EQ (window, FRAME_ROOT_WINDOW (f))) | |
5855 | delete_deletable_window (window); | |
5856 | } | |
5857 | ||
478292ed RS |
5858 | /* Fselect_window will have made f the selected frame, so we |
5859 | reselect the proper frame here. Fhandle_switch_frame will change the | |
5860 | selected window too, but that doesn't make the call to | |
5861 | Fselect_window above totally superfluous; it still sets f's | |
5862 | selected window. */ | |
5863 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
c6932ecd | 5864 | do_switch_frame (data->selected_frame, 0, 0, Qnil); |
478292ed | 5865 | |
eeca6f6f | 5866 | run_window_configuration_change_hook (f); |
478292ed | 5867 | } |
bdc727bf JB |
5868 | |
5869 | if (!NILP (new_current_buffer)) | |
c4b6914d MR |
5870 | { |
5871 | Fset_buffer (new_current_buffer); | |
5872 | /* If the new current buffer doesn't appear in the selected | |
5873 | window, go to its old point (see bug#12208). */ | |
e74aeda8 | 5874 | if (!EQ (XWINDOW (data->current_window)->contents, new_current_buffer)) |
c4b6914d MR |
5875 | Fgoto_char (make_number (old_point)); |
5876 | } | |
bdc727bf | 5877 | |
478292ed | 5878 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 5879 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 5880 | |
3f8ab7bd | 5881 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
5882 | } |
5883 | ||
27e498e6 PE |
5884 | void |
5885 | restore_window_configuration (Lisp_Object configuration) | |
5886 | { | |
5887 | Fset_window_configuration (configuration); | |
5888 | } | |
5889 | ||
562dd5e9 | 5890 | |
e74aeda8 DA |
5891 | /* If WINDOW is an internal window, recursively delete all child windows |
5892 | reachable via the next and contents slots of WINDOW. Otherwise setup | |
5893 | WINDOW to not show any buffer. */ | |
5894 | ||
fd482be5 | 5895 | void |
be7f5545 | 5896 | delete_all_child_windows (Lisp_Object window) |
7ab12479 | 5897 | { |
fa8a67e6 MR |
5898 | register struct window *w; |
5899 | ||
5900 | w = XWINDOW (window); | |
5901 | ||
d3d50620 | 5902 | if (!NILP (w->next)) |
fa8a67e6 | 5903 | /* Delete WINDOW's siblings (we traverse postorderly). */ |
d3d50620 | 5904 | delete_all_child_windows (w->next); |
605be8af | 5905 | |
e74aeda8 | 5906 | if (WINDOWP (w->contents)) |
fa8a67e6 | 5907 | { |
e74aeda8 DA |
5908 | delete_all_child_windows (w->contents); |
5909 | wset_combination (w, 0, Qnil); | |
fa8a67e6 | 5910 | } |
e74aeda8 | 5911 | else if (BUFFERP (w->contents)) |
fa8a67e6 MR |
5912 | { |
5913 | unshow_buffer (w); | |
d3d50620 DA |
5914 | unchain_marker (XMARKER (w->pointm)); |
5915 | unchain_marker (XMARKER (w->start)); | |
095d384d DA |
5916 | /* Since combination limit makes sense for an internal windows |
5917 | only, we use this slot to save the buffer for the sake of | |
5918 | possible resurrection in Fset_window_configuration. */ | |
e74aeda8 | 5919 | wset_combination_limit (w, w->contents); |
e8c17b81 | 5920 | wset_buffer (w, Qnil); |
fa8a67e6 | 5921 | } |
acf70840 GM |
5922 | |
5923 | Vwindow_list = Qnil; | |
7ab12479 JB |
5924 | } |
5925 | \f | |
5926 | static int | |
971de7fb | 5927 | count_windows (register struct window *window) |
7ab12479 JB |
5928 | { |
5929 | register int count = 1; | |
d3d50620 DA |
5930 | if (!NILP (window->next)) |
5931 | count += count_windows (XWINDOW (window->next)); | |
e74aeda8 DA |
5932 | if (WINDOWP (window->contents)) |
5933 | count += count_windows (XWINDOW (window->contents)); | |
7ab12479 JB |
5934 | return count; |
5935 | } | |
5936 | ||
5500c422 | 5937 | |
177c0ea7 | 5938 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 | 5939 | Value is last index + 1. */ |
5500c422 | 5940 | static int |
971de7fb | 5941 | get_leaf_windows (struct window *w, struct window **flat, int i) |
5500c422 GM |
5942 | { |
5943 | while (w) | |
5944 | { | |
e74aeda8 DA |
5945 | if (WINDOWP (w->contents)) |
5946 | i = get_leaf_windows (XWINDOW (w->contents), flat, i); | |
177c0ea7 | 5947 | else |
5500c422 GM |
5948 | flat[i++] = w; |
5949 | ||
d3d50620 | 5950 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
5500c422 GM |
5951 | } |
5952 | ||
5953 | return i; | |
5954 | } | |
5955 | ||
5956 | ||
5957 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
c80e3b4a | 5958 | null if W's current matrix is invalid, so that no meaningful glyph |
5500c422 | 5959 | can be returned. */ |
5500c422 | 5960 | struct glyph * |
971de7fb | 5961 | get_phys_cursor_glyph (struct window *w) |
5500c422 GM |
5962 | { |
5963 | struct glyph_row *row; | |
5964 | struct glyph *glyph; | |
f8fe6f96 | 5965 | int hpos = w->phys_cursor.hpos; |
5500c422 | 5966 | |
f8fe6f96 EZ |
5967 | if (!(w->phys_cursor.vpos >= 0 |
5968 | && w->phys_cursor.vpos < w->current_matrix->nrows)) | |
5969 | return NULL; | |
5970 | ||
5971 | row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos); | |
5972 | if (!row->enabled_p) | |
5973 | return NULL; | |
5974 | ||
80b00b08 | 5975 | if (w->hscroll) |
f8fe6f96 EZ |
5976 | { |
5977 | /* When the window is hscrolled, cursor hpos can legitimately be | |
5978 | out of bounds, but we draw the cursor at the corresponding | |
5979 | window margin in that case. */ | |
5980 | if (!row->reversed_p && hpos < 0) | |
5981 | hpos = 0; | |
5982 | if (row->reversed_p && hpos >= row->used[TEXT_AREA]) | |
5983 | hpos = row->used[TEXT_AREA] - 1; | |
5984 | } | |
5500c422 | 5985 | |
7216e43b | 5986 | if (0 <= hpos && hpos < row->used[TEXT_AREA]) |
f8fe6f96 | 5987 | glyph = row->glyphs[TEXT_AREA] + hpos; |
5500c422 GM |
5988 | else |
5989 | glyph = NULL; | |
5990 | ||
5991 | return glyph; | |
5992 | } | |
5993 | ||
5994 | ||
7ab12479 | 5995 | static int |
971de7fb | 5996 | save_window_save (Lisp_Object window, struct Lisp_Vector *vector, int i) |
7ab12479 JB |
5997 | { |
5998 | register struct saved_window *p; | |
5999 | register struct window *w; | |
6a6ee00d | 6000 | register Lisp_Object tem, pers, par; |
7ab12479 | 6001 | |
e74aeda8 | 6002 | for (; !NILP (window); window = w->next) |
7ab12479 JB |
6003 | { |
6004 | p = SAVED_WINDOW_N (vector, i); | |
6005 | w = XWINDOW (window); | |
6006 | ||
e8c17b81 | 6007 | wset_temslot (w, make_number (i)); i++; |
7ab12479 | 6008 | p->window = window; |
e74aeda8 | 6009 | p->buffer = (WINDOW_LEAF_P (w) ? w->contents : Qnil); |
5f24fa51 DA |
6010 | p->left_col = make_number (w->left_col); |
6011 | p->top_line = make_number (w->top_line); | |
6012 | p->total_cols = make_number (w->total_cols); | |
6013 | p->total_lines = make_number (w->total_lines); | |
d3d50620 DA |
6014 | p->normal_cols = w->normal_cols; |
6015 | p->normal_lines = w->normal_lines; | |
80b00b08 DA |
6016 | XSETFASTINT (p->hscroll, w->hscroll); |
6017 | XSETFASTINT (p->min_hscroll, w->min_hscroll); | |
d3d50620 DA |
6018 | p->display_table = w->display_table; |
6019 | p->left_margin_cols = w->left_margin_cols; | |
6020 | p->right_margin_cols = w->right_margin_cols; | |
6021 | p->left_fringe_width = w->left_fringe_width; | |
6022 | p->right_fringe_width = w->right_fringe_width; | |
2af3565e | 6023 | p->fringes_outside_margins = w->fringes_outside_margins ? Qt : Qnil; |
d3d50620 DA |
6024 | p->scroll_bar_width = w->scroll_bar_width; |
6025 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6026 | p->dedicated = w->dedicated; | |
6027 | p->combination_limit = w->combination_limit; | |
6a6ee00d MR |
6028 | p->window_parameters = Qnil; |
6029 | ||
6030 | if (!NILP (Vwindow_persistent_parameters)) | |
6031 | { | |
6032 | /* Run cycle detection on Vwindow_persistent_parameters. */ | |
6033 | Lisp_Object tortoise, hare; | |
6034 | ||
6035 | hare = tortoise = Vwindow_persistent_parameters; | |
6036 | while (CONSP (hare)) | |
6037 | { | |
6038 | hare = XCDR (hare); | |
6039 | if (!CONSP (hare)) | |
6040 | break; | |
6041 | ||
6042 | hare = XCDR (hare); | |
6043 | tortoise = XCDR (tortoise); | |
6044 | ||
6045 | if (EQ (hare, tortoise)) | |
6046 | /* Reset Vwindow_persistent_parameters to Qnil. */ | |
6047 | { | |
6048 | Vwindow_persistent_parameters = Qnil; | |
6049 | break; | |
6050 | } | |
6051 | } | |
6052 | ||
6053 | for (tem = Vwindow_persistent_parameters; CONSP (tem); | |
6054 | tem = XCDR (tem)) | |
6055 | { | |
6056 | pers = XCAR (tem); | |
34a02f46 MR |
6057 | /* Save values for persistent window parameters. */ |
6058 | if (CONSP (pers) && !NILP (XCDR (pers))) | |
6a6ee00d | 6059 | { |
d3d50620 | 6060 | par = Fassq (XCAR (pers), w->window_parameters); |
6a6ee00d MR |
6061 | if (NILP (par)) |
6062 | /* If the window has no value for the parameter, | |
6063 | make one. */ | |
6064 | p->window_parameters = Fcons (Fcons (XCAR (pers), Qnil), | |
6065 | p->window_parameters); | |
6066 | else | |
6067 | /* If the window has a value for the parameter, | |
6068 | save it. */ | |
6069 | p->window_parameters = Fcons (Fcons (XCAR (par), | |
6070 | XCDR (par)), | |
6071 | p->window_parameters); | |
6072 | } | |
6073 | } | |
6074 | } | |
6075 | ||
e74aeda8 | 6076 | if (BUFFERP (w->contents)) |
7ab12479 | 6077 | { |
6a6ee00d MR |
6078 | /* Save w's value of point in the window configuration. If w |
6079 | is the selected window, then get the value of point from | |
6080 | the buffer; pointm is garbage in the selected window. */ | |
7ab12479 | 6081 | if (EQ (window, selected_window)) |
e74aeda8 DA |
6082 | p->pointm = build_marker (XBUFFER (w->contents), |
6083 | BUF_PT (XBUFFER (w->contents)), | |
6084 | BUF_PT_BYTE (XBUFFER (w->contents))); | |
7ab12479 | 6085 | else |
d3d50620 | 6086 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
de8c03dc SM |
6087 | XMARKER (p->pointm)->insertion_type |
6088 | = !NILP (Vwindow_point_insertion_type); | |
7ab12479 | 6089 | |
d3d50620 | 6090 | p->start = Fcopy_marker (w->start, Qnil); |
c98ff5dd | 6091 | p->start_at_line_beg = w->start_at_line_beg ? Qt : Qnil; |
7ab12479 | 6092 | |
e74aeda8 | 6093 | tem = BVAR (XBUFFER (w->contents), mark); |
eeb82665 | 6094 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6095 | } |
6096 | else | |
6097 | { | |
6098 | p->pointm = Qnil; | |
6099 | p->start = Qnil; | |
6100 | p->mark = Qnil; | |
6101 | p->start_at_line_beg = Qnil; | |
6102 | } | |
6103 | ||
d3d50620 | 6104 | if (NILP (w->parent)) |
7ab12479 JB |
6105 | p->parent = Qnil; |
6106 | else | |
d3d50620 | 6107 | p->parent = XWINDOW (w->parent)->temslot; |
7ab12479 | 6108 | |
d3d50620 | 6109 | if (NILP (w->prev)) |
7ab12479 JB |
6110 | p->prev = Qnil; |
6111 | else | |
d3d50620 | 6112 | p->prev = XWINDOW (w->prev)->temslot; |
7ab12479 | 6113 | |
e74aeda8 DA |
6114 | if (WINDOWP (w->contents)) |
6115 | i = save_window_save (w->contents, vector, i); | |
7ab12479 JB |
6116 | } |
6117 | ||
6118 | return i; | |
6119 | } | |
6120 | ||
a7ca3326 | 6121 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6122 | Scurrent_window_configuration, 0, 1, 0, |
6123 | doc: /* Return an object representing the current window configuration of FRAME. | |
6124 | If FRAME is nil or omitted, use the selected frame. | |
6125 | This describes the number of windows, their sizes and current buffers, | |
6126 | and for each displayed buffer, where display starts, and the positions of | |
6127 | point and mark. An exception is made for point in the current buffer: | |
6128 | its value is -not- saved. | |
6129 | This also records the currently selected frame, and FRAME's focus | |
34a02f46 MR |
6130 | redirection (see `redirect-frame-focus'). The variable |
6131 | `window-persistent-parameters' specifies which window parameters are | |
6132 | saved by this function. */) | |
5842a27b | 6133 | (Lisp_Object frame) |
7ab12479 JB |
6134 | { |
6135 | register Lisp_Object tem; | |
6136 | register int n_windows; | |
6137 | register struct save_window_data *data; | |
6138 | register int i; | |
d9f07150 | 6139 | struct frame *f = decode_live_frame (frame); |
7ab12479 | 6140 | |
44fa5b1e | 6141 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
6142 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
6143 | PVEC_WINDOW_CONFIGURATION); | |
6144 | ||
6145 | data->frame_cols = FRAME_COLS (f); | |
6146 | data->frame_lines = FRAME_LINES (f); | |
6147 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
6148 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 6149 | data->selected_frame = selected_frame; |
44fa5b1e | 6150 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6151 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6152 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6153 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6154 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6155 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
25721f5b | 6156 | tem = make_uninit_vector (n_windows); |
7ab12479 JB |
6157 | data->saved_windows = tem; |
6158 | for (i = 0; i < n_windows; i++) | |
28be1ada | 6159 | ASET (tem, i, |
25721f5b | 6160 | Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil)); |
a1d58e5b | 6161 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6162 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6163 | return (tem); |
6164 | } | |
5500c422 GM |
6165 | \f |
6166 | /*********************************************************************** | |
6167 | Marginal Areas | |
6168 | ***********************************************************************/ | |
6169 | ||
6170 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6171 | 2, 3, 0, |
fdb82f93 | 6172 | doc: /* Set width of marginal areas of window WINDOW. |
52162052 MR |
6173 | WINDOW must be a live window and defaults to the selected one. |
6174 | ||
6b61353c KH |
6175 | Second arg LEFT-WIDTH specifies the number of character cells to |
6176 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6177 | does the same for the right marginal area. A nil width parameter | |
6178 | means no margin. */) | |
5842a27b | 6179 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width) |
5500c422 | 6180 | { |
52162052 | 6181 | struct window *w = decode_live_window (window); |
5500c422 | 6182 | |
6b61353c KH |
6183 | /* Translate negative or zero widths to nil. |
6184 | Margins that are too wide have to be checked elsewhere. */ | |
949cf20f | 6185 | |
c10ce82e | 6186 | if (!NILP (left_width)) |
6b61353c | 6187 | { |
c10ce82e JB |
6188 | CHECK_NUMBER (left_width); |
6189 | if (XINT (left_width) <= 0) | |
6190 | left_width = Qnil; | |
6b61353c | 6191 | } |
5500c422 | 6192 | |
c10ce82e | 6193 | if (!NILP (right_width)) |
6b61353c | 6194 | { |
c10ce82e JB |
6195 | CHECK_NUMBER (right_width); |
6196 | if (XINT (right_width) <= 0) | |
6197 | right_width = Qnil; | |
6b61353c | 6198 | } |
5500c422 | 6199 | |
d3d50620 DA |
6200 | if (!EQ (w->left_margin_cols, left_width) |
6201 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6202 | { |
e8c17b81 PE |
6203 | wset_left_margin_cols (w, left_width); |
6204 | wset_right_margin_cols (w, right_width); | |
949cf20f KS |
6205 | |
6206 | adjust_window_margins (w); | |
6207 | ||
6208 | ++windows_or_buffers_changed; | |
6209 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6210 | } | |
5500c422 | 6211 | |
5500c422 GM |
6212 | return Qnil; |
6213 | } | |
6214 | ||
6215 | ||
6216 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6217 | 0, 1, 0, | |
fdb82f93 | 6218 | doc: /* Get width of marginal areas of window WINDOW. |
52162052 MR |
6219 | WINDOW must be a live window and defaults to the selected one. |
6220 | ||
fdb82f93 PJ |
6221 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). |
6222 | If a marginal area does not exist, its width will be returned | |
6223 | as nil. */) | |
5842a27b | 6224 | (Lisp_Object window) |
5500c422 | 6225 | { |
52162052 | 6226 | struct window *w = decode_live_window (window); |
d3d50620 | 6227 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
949cf20f KS |
6228 | } |
6229 | ||
6230 | ||
6231 | \f | |
6232 | /*********************************************************************** | |
6233 | Fringes | |
6234 | ***********************************************************************/ | |
6235 | ||
a7ca3326 | 6236 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, |
949cf20f | 6237 | 2, 4, 0, |
6b61353c | 6238 | doc: /* Set the fringe widths of window WINDOW. |
52162052 MR |
6239 | WINDOW must be a live window and defaults to the selected one. |
6240 | ||
6b61353c KH |
6241 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for |
6242 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6243 | fringe width. If a fringe width arg is nil, that means to use the | |
6244 | frame's default fringe width. Default fringe widths can be set with | |
6245 | the command `set-fringe-style'. | |
6246 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6247 | outside of the display margins. By default, fringes are drawn between | |
6248 | display marginal areas and the text area. */) | |
5842a27b | 6249 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width, Lisp_Object outside_margins) |
949cf20f | 6250 | { |
52162052 | 6251 | struct window *w = decode_live_window (window); |
2af3565e | 6252 | int outside = !NILP (outside_margins); |
949cf20f | 6253 | |
c10ce82e JB |
6254 | if (!NILP (left_width)) |
6255 | CHECK_NATNUM (left_width); | |
6256 | if (!NILP (right_width)) | |
6257 | CHECK_NATNUM (right_width); | |
5a857365 | 6258 | |
017e297e | 6259 | /* Do nothing on a tty. */ |
d46c6df5 | 6260 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
d3d50620 DA |
6261 | && (!EQ (w->left_fringe_width, left_width) |
6262 | || !EQ (w->right_fringe_width, right_width) | |
2af3565e | 6263 | || w->fringes_outside_margins != outside)) |
949cf20f | 6264 | { |
e8c17b81 PE |
6265 | wset_left_fringe_width (w, left_width); |
6266 | wset_right_fringe_width (w, right_width); | |
2af3565e | 6267 | w->fringes_outside_margins = outside; |
949cf20f KS |
6268 | |
6269 | adjust_window_margins (w); | |
6270 | ||
6271 | clear_glyph_matrix (w->current_matrix); | |
9d93ce29 | 6272 | w->window_end_valid = 0; |
949cf20f KS |
6273 | |
6274 | ++windows_or_buffers_changed; | |
6275 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6276 | } | |
6277 | ||
6278 | return Qnil; | |
6279 | } | |
6280 | ||
6281 | ||
6282 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6283 | 0, 1, 0, | |
6284 | doc: /* Get width of fringes of window WINDOW. | |
52162052 MR |
6285 | WINDOW must be a live window and defaults to the selected one. |
6286 | ||
6b61353c | 6287 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
5842a27b | 6288 | (Lisp_Object window) |
949cf20f | 6289 | { |
52162052 | 6290 | struct window *w = decode_live_window (window); |
d46c6df5 | 6291 | |
89bc0592 DA |
6292 | return list3 (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6293 | make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
6294 | WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) ? Qt : Qnil); | |
949cf20f KS |
6295 | } |
6296 | ||
6297 | ||
6298 | \f | |
6299 | /*********************************************************************** | |
6300 | Scroll bars | |
6301 | ***********************************************************************/ | |
6302 | ||
a7ca3326 | 6303 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, |
16a97296 | 6304 | Sset_window_scroll_bars, 2, 4, 0, |
949cf20f | 6305 | doc: /* Set width and type of scroll bars of window WINDOW. |
52162052 MR |
6306 | WINDOW must be a live window and defaults to the selected one. |
6307 | ||
949cf20f KS |
6308 | Second parameter WIDTH specifies the pixel width for the scroll bar; |
6309 | this is automatically adjusted to a multiple of the frame column width. | |
6310 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6311 | bar: left, right, or nil. | |
6b61353c | 6312 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6313 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6314 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
5842a27b | 6315 | (Lisp_Object window, Lisp_Object width, Lisp_Object vertical_type, Lisp_Object horizontal_type) |
949cf20f | 6316 | { |
52162052 | 6317 | struct window *w = decode_live_window (window); |
949cf20f KS |
6318 | |
6319 | if (!NILP (width)) | |
0f8fe9a2 | 6320 | { |
af5a5a98 | 6321 | CHECK_RANGED_INTEGER (width, 0, INT_MAX); |
949cf20f | 6322 | |
0f8fe9a2 SM |
6323 | if (XINT (width) == 0) |
6324 | vertical_type = Qnil; | |
6325 | } | |
949cf20f | 6326 | |
413a79ad | 6327 | if (!(NILP (vertical_type) |
0cc1039f | 6328 | || EQ (vertical_type, Qleft) |
6b61353c KH |
6329 | || EQ (vertical_type, Qright) |
6330 | || EQ (vertical_type, Qt))) | |
6331 | error ("Invalid type of vertical scroll bar"); | |
6332 | ||
d3d50620 DA |
6333 | if (!EQ (w->scroll_bar_width, width) |
6334 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
949cf20f | 6335 | { |
e8c17b81 PE |
6336 | wset_scroll_bar_width (w, width); |
6337 | wset_vertical_scroll_bar_type (w, vertical_type); | |
949cf20f KS |
6338 | |
6339 | adjust_window_margins (w); | |
6340 | ||
6341 | clear_glyph_matrix (w->current_matrix); | |
9d93ce29 | 6342 | w->window_end_valid = 0; |
949cf20f KS |
6343 | |
6344 | ++windows_or_buffers_changed; | |
6345 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6346 | } | |
6347 | ||
6348 | return Qnil; | |
6349 | } | |
6350 | ||
6351 | ||
6352 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6353 | 0, 1, 0, | |
6354 | doc: /* Get width and type of scroll bars of window WINDOW. | |
52162052 MR |
6355 | WINDOW must be a live window and defaults to the selected one. |
6356 | ||
6b61353c KH |
6357 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6358 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6359 | value. */) | |
5842a27b | 6360 | (Lisp_Object window) |
949cf20f | 6361 | { |
52162052 | 6362 | struct window *w = decode_live_window (window); |
89bc0592 DA |
6363 | |
6364 | return list4 (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
949cf20f KS |
6365 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) |
6366 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
89bc0592 DA |
6367 | make_number (WINDOW_SCROLL_BAR_COLS (w)), |
6368 | w->vertical_scroll_bar_type, Qnil); | |
5500c422 GM |
6369 | } |
6370 | ||
6371 | ||
7ab12479 | 6372 | \f |
5500c422 GM |
6373 | /*********************************************************************** |
6374 | Smooth scrolling | |
6375 | ***********************************************************************/ | |
6376 | ||
0cc1039f | 6377 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 | 6378 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
49745b39 | 6379 | If WINDOW is omitted or nil, it defaults to the selected window. |
0cc1039f | 6380 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6381 | optional second arg PIXELS-P means value is measured in pixels. */) |
5842a27b | 6382 | (Lisp_Object window, Lisp_Object pixels_p) |
5500c422 | 6383 | { |
47004952 | 6384 | Lisp_Object result; |
1f76f6f5 MR |
6385 | struct window *w = decode_live_window (window); |
6386 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 6387 | |
5500c422 | 6388 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6389 | result = (NILP (pixels_p) |
6390 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6391 | : make_number (-w->vscroll)); | |
5500c422 | 6392 | else |
47004952 GM |
6393 | result = make_number (0); |
6394 | return result; | |
5500c422 GM |
6395 | } |
6396 | ||
6397 | ||
6398 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6399 | 2, 3, 0, |
fdb82f93 | 6400 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6401 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6402 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6403 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6404 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6405 | corresponds to an integral number of pixels. The return value is the | |
6406 | result of this rounding. | |
6407 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
5842a27b | 6408 | (Lisp_Object window, Lisp_Object vscroll, Lisp_Object pixels_p) |
5500c422 | 6409 | { |
1f76f6f5 MR |
6410 | struct window *w = decode_live_window (window); |
6411 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 6412 | |
b7826503 | 6413 | CHECK_NUMBER_OR_FLOAT (vscroll); |
177c0ea7 | 6414 | |
5500c422 GM |
6415 | if (FRAME_WINDOW_P (f)) |
6416 | { | |
6417 | int old_dy = w->vscroll; | |
177c0ea7 | 6418 | |
0cc1039f KS |
6419 | w->vscroll = - (NILP (pixels_p) |
6420 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6421 | : XFLOATINT (vscroll)); | |
47004952 | 6422 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6423 | |
e56263e5 KS |
6424 | if (w->vscroll != old_dy) |
6425 | { | |
6426 | /* Adjust glyph matrix of the frame if the virtual display | |
6427 | area becomes larger than before. */ | |
6428 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
6429 | adjust_glyphs (f); | |
177c0ea7 | 6430 | |
e56263e5 | 6431 | /* Prevent redisplay shortcuts. */ |
e74aeda8 | 6432 | XBUFFER (w->contents)->prevent_redisplay_optimizations_p = 1; |
e56263e5 | 6433 | } |
5500c422 | 6434 | } |
177c0ea7 | 6435 | |
0cc1039f | 6436 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 6437 | } |
177c0ea7 | 6438 | |
7bbb5782 GM |
6439 | \f |
6440 | /* Call FN for all leaf windows on frame F. FN is called with the | |
6441 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 6442 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 | 6443 | |
2f7c71a1 AS |
6444 | static void |
6445 | foreach_window (struct frame *f, int (*fn) (struct window *, void *), | |
6446 | void *user_data) | |
7bbb5782 | 6447 | { |
56f2de10 | 6448 | /* delete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
76fb556f YM |
6449 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) |
6450 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
6451 | } |
6452 | ||
6453 | ||
6454 | /* Helper function for foreach_window. Call FN for all leaf windows | |
6455 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 6456 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 6457 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 6458 | |
67492200 | 6459 | static int |
971de7fb | 6460 | foreach_window_1 (struct window *w, int (*fn) (struct window *, void *), void *user_data) |
7bbb5782 | 6461 | { |
67492200 | 6462 | int cont; |
177c0ea7 | 6463 | |
67492200 | 6464 | for (cont = 1; w && cont;) |
7bbb5782 | 6465 | { |
e74aeda8 DA |
6466 | if (WINDOWP (w->contents)) |
6467 | cont = foreach_window_1 (XWINDOW (w->contents), fn, user_data); | |
177c0ea7 | 6468 | else |
0f532a9a | 6469 | cont = fn (w, user_data); |
177c0ea7 | 6470 | |
d3d50620 | 6471 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
7bbb5782 | 6472 | } |
67492200 GM |
6473 | |
6474 | return cont; | |
7bbb5782 GM |
6475 | } |
6476 | ||
6477 | ||
6d194a45 | 6478 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 6479 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
6480 | the window start. */ |
6481 | ||
67492200 | 6482 | static int |
971de7fb | 6483 | freeze_window_start (struct window *w, void *freeze_p) |
7bbb5782 | 6484 | { |
08c1d235 SM |
6485 | if (MINI_WINDOW_P (w) |
6486 | || (WINDOWP (selected_window) /* Can be nil in corner cases. */ | |
6487 | && (w == XWINDOW (selected_window) | |
6488 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
6489 | && ! NILP (Vminibuf_scroll_window) | |
6490 | && w == XWINDOW (Vminibuf_scroll_window))))) | |
f95464e4 | 6491 | freeze_p = NULL; |
177c0ea7 | 6492 | |
f95464e4 | 6493 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 6494 | return 1; |
7bbb5782 GM |
6495 | } |
6496 | ||
6497 | ||
6498 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
6499 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
6500 | means freeze the window start. */ | |
6501 | ||
6502 | void | |
748fa866 | 6503 | freeze_window_starts (struct frame *f, bool freeze_p) |
7bbb5782 | 6504 | { |
cbccabec | 6505 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 6506 | } |
5500c422 GM |
6507 | |
6508 | \f | |
6509 | /*********************************************************************** | |
6510 | Initialization | |
6511 | ***********************************************************************/ | |
6512 | ||
6198ccd0 MR |
6513 | /* Return 1 if window configurations CONFIGURATION1 and CONFIGURATION2 |
6514 | describe the same state of affairs. This is used by Fequal. | |
6515 | ||
f75d7a91 | 6516 | IGNORE_POSITIONS means ignore non-matching scroll positions |
6198ccd0 MR |
6517 | and the like. |
6518 | ||
e4769531 | 6519 | This ignores a couple of things like the dedication status of |
b6f67890 MR |
6520 | window, combination_limit and the like. This might have to be |
6521 | fixed. */ | |
cbff28e8 | 6522 | |
f75d7a91 PE |
6523 | bool |
6524 | compare_window_configurations (Lisp_Object configuration1, | |
6525 | Lisp_Object configuration2, | |
6526 | bool ignore_positions) | |
cbff28e8 RS |
6527 | { |
6528 | register struct save_window_data *d1, *d2; | |
6198ccd0 | 6529 | struct Lisp_Vector *sws1, *sws2; |
71f02bc5 | 6530 | ptrdiff_t i; |
cbff28e8 | 6531 | |
6198ccd0 MR |
6532 | CHECK_WINDOW_CONFIGURATION (configuration1); |
6533 | CHECK_WINDOW_CONFIGURATION (configuration2); | |
6534 | ||
6535 | d1 = (struct save_window_data *) XVECTOR (configuration1); | |
6536 | d2 = (struct save_window_data *) XVECTOR (configuration2); | |
6537 | sws1 = XVECTOR (d1->saved_windows); | |
6538 | sws2 = XVECTOR (d2->saved_windows); | |
6539 | ||
6540 | /* Frame settings must match. */ | |
6541 | if (d1->frame_cols != d2->frame_cols | |
6542 | || d1->frame_lines != d2->frame_lines | |
6543 | || d1->frame_menu_bar_lines != d2->frame_menu_bar_lines | |
6544 | || !EQ (d1->selected_frame, d2->selected_frame) | |
6545 | || !EQ (d1->current_buffer, d2->current_buffer) | |
6546 | || (!ignore_positions | |
6547 | && (!EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window) | |
6548 | || !EQ (d1->minibuf_selected_window, d2->minibuf_selected_window))) | |
6549 | || !EQ (d1->focus_frame, d2->focus_frame) | |
6550 | /* Verify that the two configurations have the same number of windows. */ | |
6551 | || sws1->header.size != sws2->header.size) | |
cbff28e8 | 6552 | return 0; |
cbff28e8 | 6553 | |
6198ccd0 | 6554 | for (i = 0; i < sws1->header.size; i++) |
cbff28e8 | 6555 | { |
6198ccd0 | 6556 | struct saved_window *sw1, *sw2; |
cbff28e8 | 6557 | |
6198ccd0 MR |
6558 | sw1 = SAVED_WINDOW_N (sws1, i); |
6559 | sw2 = SAVED_WINDOW_N (sws2, i); | |
6560 | ||
6561 | if ( | |
6562 | /* The "current" windows in the two configurations must | |
6563 | correspond to each other. */ | |
6564 | EQ (d1->current_window, sw1->window) | |
6565 | != EQ (d2->current_window, sw2->window) | |
6566 | /* Windows' buffers must match. */ | |
6567 | || !EQ (sw1->buffer, sw2->buffer) | |
6568 | || !EQ (sw1->left_col, sw2->left_col) | |
6569 | || !EQ (sw1->top_line, sw2->top_line) | |
6570 | || !EQ (sw1->total_cols, sw2->total_cols) | |
6571 | || !EQ (sw1->total_lines, sw2->total_lines) | |
6572 | || !EQ (sw1->display_table, sw2->display_table) | |
6573 | /* The next two disjuncts check the window structure for | |
6574 | equality. */ | |
6575 | || !EQ (sw1->parent, sw2->parent) | |
6576 | || !EQ (sw1->prev, sw2->prev) | |
6577 | || (!ignore_positions | |
6578 | && (!EQ (sw1->hscroll, sw2->hscroll) | |
6579 | || !EQ (sw1->min_hscroll, sw2->min_hscroll) | |
6580 | || !EQ (sw1->start_at_line_beg, sw2->start_at_line_beg) | |
6581 | || NILP (Fequal (sw1->start, sw2->start)) | |
6582 | || NILP (Fequal (sw1->pointm, sw2->pointm)) | |
6583 | || NILP (Fequal (sw1->mark, sw2->mark)))) | |
6584 | || !EQ (sw1->left_margin_cols, sw2->left_margin_cols) | |
6585 | || !EQ (sw1->right_margin_cols, sw2->right_margin_cols) | |
6586 | || !EQ (sw1->left_fringe_width, sw2->left_fringe_width) | |
6587 | || !EQ (sw1->right_fringe_width, sw2->right_fringe_width) | |
6588 | || !EQ (sw1->fringes_outside_margins, sw2->fringes_outside_margins) | |
6589 | || !EQ (sw1->scroll_bar_width, sw2->scroll_bar_width) | |
6590 | || !EQ (sw1->vertical_scroll_bar_type, sw2->vertical_scroll_bar_type)) | |
949cf20f | 6591 | return 0; |
cbff28e8 RS |
6592 | } |
6593 | ||
6594 | return 1; | |
6595 | } | |
2f8274be RS |
6596 | |
6597 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
6598 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
6599 | doc: /* Compare two window configurations as regards the structure of windows. |
6600 | This function ignores details such as the values of point and mark | |
6601 | and scrolling positions. */) | |
5842a27b | 6602 | (Lisp_Object x, Lisp_Object y) |
2f8274be RS |
6603 | { |
6604 | if (compare_window_configurations (x, y, 1)) | |
6605 | return Qt; | |
6606 | return Qnil; | |
6607 | } | |
cbff28e8 | 6608 | \f |
dfcf069d | 6609 | void |
971de7fb | 6610 | init_window_once (void) |
7ab12479 | 6611 | { |
3224dac1 | 6612 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
6613 | XSETFRAME (selected_frame, f); |
6614 | Vterminal_frame = selected_frame; | |
e69b0960 DA |
6615 | minibuf_window = f->minibuffer_window; |
6616 | selected_window = f->selected_window; | |
1ae1a37d | 6617 | last_nonminibuf_frame = f; |
5b03d3c0 RS |
6618 | |
6619 | window_initialized = 1; | |
7ab12479 JB |
6620 | } |
6621 | ||
67492200 | 6622 | void |
971de7fb | 6623 | init_window (void) |
67492200 GM |
6624 | { |
6625 | Vwindow_list = Qnil; | |
6626 | } | |
6627 | ||
dfcf069d | 6628 | void |
971de7fb | 6629 | syms_of_window (void) |
7ab12479 | 6630 | { |
cd3520a4 JB |
6631 | DEFSYM (Qscroll_up, "scroll-up"); |
6632 | DEFSYM (Qscroll_down, "scroll-down"); | |
6633 | DEFSYM (Qscroll_command, "scroll-command"); | |
a4b000fb JL |
6634 | |
6635 | Fput (Qscroll_up, Qscroll_command, Qt); | |
6636 | Fput (Qscroll_down, Qscroll_command, Qt); | |
6637 | ||
cd3520a4 JB |
6638 | DEFSYM (Qwindow_configuration_change_hook, "window-configuration-change-hook"); |
6639 | DEFSYM (Qwindowp, "windowp"); | |
6640 | DEFSYM (Qwindow_configuration_p, "window-configuration-p"); | |
6641 | DEFSYM (Qwindow_live_p, "window-live-p"); | |
52162052 | 6642 | DEFSYM (Qwindow_valid_p, "window-valid-p"); |
cd3520a4 JB |
6643 | DEFSYM (Qwindow_deletable_p, "window-deletable-p"); |
6644 | DEFSYM (Qdelete_window, "delete-window"); | |
5386012d MR |
6645 | DEFSYM (Qwindow_resize_root_window, "window--resize-root-window"); |
6646 | DEFSYM (Qwindow_resize_root_window_vertically, "window--resize-root-window-vertically"); | |
cd3520a4 JB |
6647 | DEFSYM (Qsafe, "safe"); |
6648 | DEFSYM (Qdisplay_buffer, "display-buffer"); | |
6649 | DEFSYM (Qreplace_buffer_in_windows, "replace-buffer-in-windows"); | |
6650 | DEFSYM (Qrecord_window_buffer, "record-window-buffer"); | |
6651 | DEFSYM (Qget_mru_window, "get-mru-window"); | |
5938d519 | 6652 | DEFSYM (Qwindow_size, "window-size"); |
cd3520a4 JB |
6653 | DEFSYM (Qtemp_buffer_show_hook, "temp-buffer-show-hook"); |
6654 | DEFSYM (Qabove, "above"); | |
6655 | DEFSYM (Qbelow, "below"); | |
6a6ee00d | 6656 | DEFSYM (Qclone_of, "clone-of"); |
b9e809c2 | 6657 | |
67492200 | 6658 | staticpro (&Vwindow_list); |
8bfb170b KS |
6659 | |
6660 | minibuf_selected_window = Qnil; | |
3dbab091 | 6661 | staticpro (&minibuf_selected_window); |
67492200 | 6662 | |
c876b227 | 6663 | window_scroll_pixel_based_preserve_x = -1; |
66fe93d1 | 6664 | window_scroll_pixel_based_preserve_y = -1; |
c876b227 SM |
6665 | window_scroll_preserve_hpos = -1; |
6666 | window_scroll_preserve_vpos = -1; | |
66d43aea | 6667 | |
29208e82 | 6668 | DEFVAR_LISP ("temp-buffer-show-function", Vtemp_buffer_show_function, |
fdb82f93 PJ |
6669 | doc: /* Non-nil means call as function to display a help buffer. |
6670 | The function is called with one argument, the buffer to be displayed. | |
6671 | Used by `with-output-to-temp-buffer'. | |
6672 | If this function is used, then it must do the entire job of showing | |
6673 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 | 6674 | Vtemp_buffer_show_function = Qnil; |
e10ac9f1 | 6675 | |
29208e82 | 6676 | DEFVAR_LISP ("minibuffer-scroll-window", Vminibuf_scroll_window, |
fdb82f93 | 6677 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
6678 | Vminibuf_scroll_window = Qnil; |
6679 | ||
29208e82 | 6680 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", mode_line_in_non_selected_windows, |
26124d5e | 6681 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
6682 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
6683 | is displayed in the `mode-line' face. */); | |
6684 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 6685 | |
29208e82 | 6686 | DEFVAR_LISP ("other-window-scroll-buffer", Vother_window_scroll_buffer, |
fdb82f93 | 6687 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
6688 | Vother_window_scroll_buffer = Qnil; |
6689 | ||
29208e82 | 6690 | DEFVAR_BOOL ("auto-window-vscroll", auto_window_vscroll_p, |
e10ac9f1 | 6691 | doc: /* Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); |
e56263e5 KS |
6692 | auto_window_vscroll_p = 1; |
6693 | ||
29208e82 | 6694 | DEFVAR_INT ("next-screen-context-lines", next_screen_context_lines, |
e10ac9f1 | 6695 | doc: /* Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
6696 | next_screen_context_lines = 2; |
6697 | ||
5500c422 | 6698 | DEFVAR_LISP ("scroll-preserve-screen-position", |
29208e82 | 6699 | Vscroll_preserve_screen_position, |
e10ac9f1 | 6700 | doc: /* Controls if scroll commands move point to keep its screen position unchanged. |
bdf4ec93 RS |
6701 | A value of nil means point does not keep its screen position except |
6702 | at the scroll margin or window boundary respectively. | |
6703 | A value of t means point keeps its screen position if the scroll | |
6704 | command moved it vertically out of the window, e.g. when scrolling | |
6705 | by full screens. | |
9013a7f8 | 6706 | Any other value means point always keeps its screen position. |
a4b000fb JL |
6707 | Scroll commands should have the `scroll-command' property |
6708 | on their symbols to be controlled by this variable. */); | |
5500c422 | 6709 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 6710 | |
29208e82 | 6711 | DEFVAR_LISP ("window-point-insertion-type", Vwindow_point_insertion_type, |
a1562258 SM |
6712 | doc: /* Type of marker to use for `window-point'. */); |
6713 | Vwindow_point_insertion_type = Qnil; | |
6714 | ||
543f5fb1 | 6715 | DEFVAR_LISP ("window-configuration-change-hook", |
29208e82 | 6716 | Vwindow_configuration_change_hook, |
fdb82f93 | 6717 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
6718 | The buffer-local part is run once per window, with the relevant window |
6719 | selected; while the global part is run only once for the modified frame, | |
6720 | with the relevant frame selected. */); | |
543f5fb1 RS |
6721 | Vwindow_configuration_change_hook = Qnil; |
6722 | ||
29208e82 | 6723 | DEFVAR_LISP ("recenter-redisplay", Vrecenter_redisplay, |
61d4b438 MR |
6724 | doc: /* Non-nil means `recenter' redraws entire frame. |
6725 | If this option is non-nil, then the `recenter' command with a nil | |
6726 | argument will redraw the entire frame; the special value `tty' causes | |
6727 | the frame to be redrawn only if it is a tty frame. */); | |
666e158e MB |
6728 | Vrecenter_redisplay = Qtty; |
6729 | ||
a0c2d0ae | 6730 | DEFVAR_LISP ("window-combination-resize", Vwindow_combination_resize, |
454592a6 | 6731 | doc: /* If t, resize window combinations proportionally. |
1a13852e | 6732 | If this variable is nil, splitting a window gets the entire screen space |
a0c2d0ae | 6733 | for displaying the new window from the window to split. Deleting and |
df85d315 | 6734 | resizing a window preferably resizes one adjacent window only. |
a0c2d0ae | 6735 | |
454592a6 | 6736 | If this variable is t, splitting a window tries to get the space |
a0c2d0ae MR |
6737 | proportionally from all windows in the same combination. This also |
6738 | allows to split a window that is otherwise too small or of fixed size. | |
6739 | Resizing and deleting a window proportionally resize all windows in the | |
6740 | same combination. | |
1a13852e | 6741 | |
454592a6 MR |
6742 | Other values are reserved for future use. |
6743 | ||
9fc9a531 AH |
6744 | This variable takes no effect if the variable `window-combination-limit' is |
6745 | non-nil. */); | |
a0c2d0ae | 6746 | Vwindow_combination_resize = Qnil; |
1a13852e | 6747 | |
b6f67890 | 6748 | DEFVAR_LISP ("window-combination-limit", Vwindow_combination_limit, |
8e17c9ba MR |
6749 | doc: /* If non-nil, splitting a window makes a new parent window. |
6750 | The following values are recognized: | |
1a13852e | 6751 | |
8e17c9ba | 6752 | nil means splitting a window will create a new parent window only if the |
5938d519 MR |
6753 | window has no parent window or the window shall become part of a |
6754 | combination orthogonal to the one it is part of. | |
1a13852e | 6755 | |
5938d519 MR |
6756 | `window-size' means that splitting a window for displaying a buffer |
6757 | makes a new parent window provided `display-buffer' is supposed to | |
6758 | explicitly set the window's size due to the presence of a | |
6759 | `window-height' or `window-width' entry in the alist used by | |
6760 | `display-buffer'. Otherwise, this value is handled like nil. | |
8e17c9ba MR |
6761 | |
6762 | `temp-buffer' means that splitting a window for displaying a temporary | |
6763 | buffer always makes a new parent window. Otherwise, this value is | |
6764 | handled like nil. | |
6765 | ||
8e17c9ba MR |
6766 | `display-buffer' means that splitting a window for displaying a buffer |
6767 | always makes a new parent window. Since temporary buffers are | |
6768 | displayed by the function `display-buffer', this value is stronger | |
6769 | than `temp-buffer'. Splitting a window for other purpose makes a | |
6770 | new parent window only if needed. | |
6771 | ||
6772 | t means that splitting a window always creates a new parent window. If | |
6773 | all splits behave this way, each frame's window tree is a binary | |
6774 | tree and every window but the frame's root window has exactly one | |
6775 | sibling. | |
1a13852e | 6776 | |
8e17c9ba | 6777 | Other values are reserved for future use. */); |
5938d519 | 6778 | Vwindow_combination_limit = Qwindow_size; |
666e158e | 6779 | |
6a6ee00d MR |
6780 | DEFVAR_LISP ("window-persistent-parameters", Vwindow_persistent_parameters, |
6781 | doc: /* Alist of persistent window parameters. | |
34a02f46 MR |
6782 | This alist specifies which window parameters shall get saved by |
6783 | `current-window-configuration' and `window-state-get' and subsequently | |
6784 | restored to their previous values by `set-window-configuration' and | |
6785 | `window-state-put'. | |
6a6ee00d MR |
6786 | |
6787 | The car of each entry of this alist is the symbol specifying the | |
6788 | parameter. The cdr is one of the following: | |
6789 | ||
34a02f46 MR |
6790 | nil means the parameter is neither saved by `window-state-get' nor by |
6791 | `current-window-configuration'. | |
6a6ee00d | 6792 | |
34a02f46 MR |
6793 | t means the parameter is saved by `current-window-configuration' and, |
6794 | provided its WRITABLE argument is nil, by `window-state-get'. | |
6a6ee00d | 6795 | |
34a02f46 MR |
6796 | The symbol `writable' means the parameter is saved unconditionally by |
6797 | both `current-window-configuration' and `window-state-get'. Do not use | |
6798 | this value for parameters without read syntax (like windows or frames). | |
6a6ee00d MR |
6799 | |
6800 | Parameters not saved by `current-window-configuration' or | |
6801 | `window-state-get' are left alone by `set-window-configuration' | |
6802 | respectively are not installed by `window-state-put'. */); | |
34a02f46 | 6803 | Vwindow_persistent_parameters = list1 (Fcons (Qclone_of, Qt)); |
6a6ee00d | 6804 | |
7ab12479 JB |
6805 | defsubr (&Sselected_window); |
6806 | defsubr (&Sminibuffer_window); | |
6807 | defsubr (&Swindow_minibuffer_p); | |
6808 | defsubr (&Swindowp); | |
52162052 | 6809 | defsubr (&Swindow_valid_p); |
806b4d9b | 6810 | defsubr (&Swindow_live_p); |
727e958e MR |
6811 | defsubr (&Swindow_frame); |
6812 | defsubr (&Sframe_root_window); | |
6813 | defsubr (&Sframe_first_window); | |
6814 | defsubr (&Sframe_selected_window); | |
6815 | defsubr (&Sset_frame_selected_window); | |
7ab12479 | 6816 | defsubr (&Spos_visible_in_window_p); |
536833ab | 6817 | defsubr (&Swindow_line_height); |
7ab12479 | 6818 | defsubr (&Swindow_buffer); |
bf60a96b | 6819 | defsubr (&Swindow_parent); |
d68443dc MR |
6820 | defsubr (&Swindow_top_child); |
6821 | defsubr (&Swindow_left_child); | |
6822 | defsubr (&Swindow_next_sibling); | |
6823 | defsubr (&Swindow_prev_sibling); | |
b6f67890 MR |
6824 | defsubr (&Swindow_combination_limit); |
6825 | defsubr (&Sset_window_combination_limit); | |
abde8f8c MR |
6826 | defsubr (&Swindow_use_time); |
6827 | defsubr (&Swindow_top_line); | |
6828 | defsubr (&Swindow_left_column); | |
105216ed CY |
6829 | defsubr (&Swindow_total_height); |
6830 | defsubr (&Swindow_total_width); | |
496e208e MR |
6831 | defsubr (&Swindow_normal_size); |
6832 | defsubr (&Swindow_new_total); | |
6833 | defsubr (&Swindow_new_normal); | |
6834 | defsubr (&Sset_window_new_total); | |
6835 | defsubr (&Sset_window_new_normal); | |
d615d6d2 | 6836 | defsubr (&Swindow_resize_apply); |
105216ed CY |
6837 | defsubr (&Swindow_body_height); |
6838 | defsubr (&Swindow_body_width); | |
7ab12479 JB |
6839 | defsubr (&Swindow_hscroll); |
6840 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
6841 | defsubr (&Swindow_redisplay_end_trigger); |
6842 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 6843 | defsubr (&Swindow_edges); |
c99a9eb3 | 6844 | defsubr (&Swindow_pixel_edges); |
9d5405ec | 6845 | defsubr (&Swindow_absolute_pixel_edges); |
c99a9eb3 RS |
6846 | defsubr (&Swindow_inside_edges); |
6847 | defsubr (&Swindow_inside_pixel_edges); | |
9d5405ec | 6848 | defsubr (&Swindow_inside_absolute_pixel_edges); |
d5783c40 JB |
6849 | defsubr (&Scoordinates_in_window_p); |
6850 | defsubr (&Swindow_at); | |
7ab12479 JB |
6851 | defsubr (&Swindow_point); |
6852 | defsubr (&Swindow_start); | |
6853 | defsubr (&Swindow_end); | |
6854 | defsubr (&Sset_window_point); | |
6855 | defsubr (&Sset_window_start); | |
6856 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 6857 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
6858 | defsubr (&Swindow_display_table); |
6859 | defsubr (&Sset_window_display_table); | |
6860 | defsubr (&Snext_window); | |
6861 | defsubr (&Sprevious_window); | |
7ab12479 | 6862 | defsubr (&Sget_buffer_window); |
1a13852e MR |
6863 | defsubr (&Sdelete_other_windows_internal); |
6864 | defsubr (&Sdelete_window_internal); | |
6865 | defsubr (&Sresize_mini_window_internal); | |
7ab12479 | 6866 | defsubr (&Sset_window_buffer); |
1a13852e | 6867 | defsubr (&Srun_window_configuration_change_hook); |
7ab12479 | 6868 | defsubr (&Sselect_window); |
6b61353c | 6869 | defsubr (&Sforce_window_update); |
1a13852e | 6870 | defsubr (&Ssplit_window_internal); |
7ab12479 JB |
6871 | defsubr (&Sscroll_up); |
6872 | defsubr (&Sscroll_down); | |
6873 | defsubr (&Sscroll_left); | |
6874 | defsubr (&Sscroll_right); | |
ccd0664b | 6875 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 6876 | defsubr (&Sscroll_other_window); |
fa832261 | 6877 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 6878 | defsubr (&Srecenter); |
81fe0836 | 6879 | defsubr (&Swindow_text_height); |
7ab12479 JB |
6880 | defsubr (&Smove_to_window_line); |
6881 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 6882 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
6883 | defsubr (&Sset_window_configuration); |
6884 | defsubr (&Scurrent_window_configuration); | |
5500c422 GM |
6885 | defsubr (&Sset_window_margins); |
6886 | defsubr (&Swindow_margins); | |
949cf20f KS |
6887 | defsubr (&Sset_window_fringes); |
6888 | defsubr (&Swindow_fringes); | |
6889 | defsubr (&Sset_window_scroll_bars); | |
6890 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
6891 | defsubr (&Swindow_vscroll); |
6892 | defsubr (&Sset_window_vscroll); | |
2f8274be | 6893 | defsubr (&Scompare_window_configurations); |
67492200 | 6894 | defsubr (&Swindow_list); |
abde8f8c | 6895 | defsubr (&Swindow_list_1); |
496e208e MR |
6896 | defsubr (&Swindow_prev_buffers); |
6897 | defsubr (&Sset_window_prev_buffers); | |
6898 | defsubr (&Swindow_next_buffers); | |
6899 | defsubr (&Sset_window_next_buffers); | |
cfbb2395 JB |
6900 | defsubr (&Swindow_parameters); |
6901 | defsubr (&Swindow_parameter); | |
6902 | defsubr (&Sset_window_parameter); | |
7ab12479 JB |
6903 | } |
6904 | ||
dfcf069d | 6905 | void |
971de7fb | 6906 | keys_of_window (void) |
7ab12479 | 6907 | { |
7ab12479 JB |
6908 | initial_define_key (control_x_map, '<', "scroll-left"); |
6909 | initial_define_key (control_x_map, '>', "scroll-right"); | |
6910 | ||
32129746 | 6911 | initial_define_key (global_map, Ctl ('V'), "scroll-up-command"); |
7ab12479 | 6912 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); |
32129746 | 6913 | initial_define_key (meta_map, 'v', "scroll-down-command"); |
7ab12479 | 6914 | } |