Commit | Line | Data |
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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
ab422c4d PE |
3 | Copyright (C) 1985-1987, 1993-1998, 2000-2013 Free Software |
4 | Foundation, Inc. | |
7ab12479 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
7ab12479 | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
7ab12479 JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
7ab12479 | 20 | |
18160b98 | 21 | #include <config.h> |
e8c17b81 PE |
22 | |
23 | #define WINDOW_INLINE EXTERN_INLINE | |
24 | ||
4d553a13 KL |
25 | #include <stdio.h> |
26 | ||
7ab12479 | 27 | #include "lisp.h" |
e5560ff7 | 28 | #include "character.h" |
7ab12479 | 29 | #include "buffer.h" |
3e4731a3 | 30 | #include "keyboard.h" |
e35f6ff7 | 31 | #include "keymap.h" |
44fa5b1e | 32 | #include "frame.h" |
7ab12479 JB |
33 | #include "window.h" |
34 | #include "commands.h" | |
35 | #include "indent.h" | |
36 | #include "termchar.h" | |
37 | #include "disptab.h" | |
dfcf069d | 38 | #include "dispextern.h" |
5500c422 GM |
39 | #include "blockinput.h" |
40 | #include "intervals.h" | |
de509a60 | 41 | #include "termhooks.h" /* For FRAME_TERMINAL. */ |
5500c422 | 42 | |
6d55d620 | 43 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 44 | #include "xterm.h" |
5500c422 | 45 | #endif /* HAVE_X_WINDOWS */ |
0fda9b75 | 46 | #ifdef HAVE_NTGUI |
8f23f280 AI |
47 | #include "w32term.h" |
48 | #endif | |
1e3c8885 EZ |
49 | #ifdef MSDOS |
50 | #include "msdos.h" | |
51 | #endif | |
edfda783 AR |
52 | #ifdef HAVE_NS |
53 | #include "nsterm.h" | |
54 | #endif | |
5500c422 | 55 | |
b52d6985 PE |
56 | Lisp_Object Qwindowp, Qwindow_live_p; |
57 | static Lisp_Object Qwindow_valid_p; | |
b9e809c2 | 58 | static Lisp_Object Qwindow_configuration_p, Qrecord_window_buffer; |
9397e56f | 59 | static Lisp_Object Qwindow_deletable_p, Qdelete_window, Qdisplay_buffer; |
b9e809c2 | 60 | static Lisp_Object Qreplace_buffer_in_windows, Qget_mru_window; |
5386012d | 61 | static Lisp_Object Qwindow_resize_root_window, Qwindow_resize_root_window_vertically; |
955cbe7b | 62 | static Lisp_Object Qscroll_up, Qscroll_down, Qscroll_command; |
5938d519 | 63 | static Lisp_Object Qsafe, Qabove, Qbelow, Qwindow_size, Qclone_of; |
b9e809c2 | 64 | |
f57e2426 | 65 | static int displayed_window_lines (struct window *); |
f57e2426 J |
66 | static int count_windows (struct window *); |
67 | static int get_leaf_windows (struct window *, struct window **, int); | |
d311d28c | 68 | static void window_scroll (Lisp_Object, EMACS_INT, int, int); |
f57e2426 J |
69 | static void window_scroll_pixel_based (Lisp_Object, int, int, int); |
70 | static void window_scroll_line_based (Lisp_Object, int, int, int); | |
f57e2426 | 71 | static int freeze_window_start (struct window *, void *); |
f57e2426 J |
72 | static Lisp_Object window_list (void); |
73 | static int add_window_to_list (struct window *, void *); | |
74 | static int candidate_window_p (Lisp_Object, Lisp_Object, Lisp_Object, | |
75 | Lisp_Object); | |
76 | static Lisp_Object next_window (Lisp_Object, Lisp_Object, | |
77 | Lisp_Object, int); | |
78 | static void decode_next_window_args (Lisp_Object *, Lisp_Object *, | |
79 | Lisp_Object *); | |
2f7c71a1 | 80 | static void foreach_window (struct frame *, |
f95464e4 | 81 | int (* fn) (struct window *, void *), |
2f7c71a1 | 82 | void *); |
f57e2426 J |
83 | static int foreach_window_1 (struct window *, |
84 | int (* fn) (struct window *, void *), | |
85 | void *); | |
86 | static Lisp_Object window_list_1 (Lisp_Object, Lisp_Object, Lisp_Object); | |
d615d6d2 MR |
87 | static int window_resize_check (struct window *, int); |
88 | static void window_resize_apply (struct window *, int); | |
7c82f3e2 | 89 | static Lisp_Object select_window (Lisp_Object, Lisp_Object, int); |
12384b01 | 90 | static void select_window_1 (Lisp_Object, bool); |
b7354ddf | 91 | |
7ab12479 JB |
92 | /* This is the window in which the terminal's cursor should |
93 | be left when nothing is being done with it. This must | |
94 | always be a leaf window, and its buffer is selected by | |
95 | the top level editing loop at the end of each command. | |
96 | ||
97 | This value is always the same as | |
44fa5b1e | 98 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
99 | Lisp_Object selected_window; |
100 | ||
67492200 GM |
101 | /* A list of all windows for use by next_window and Fwindow_list. |
102 | Functions creating or deleting windows should invalidate this cache | |
103 | by setting it to nil. */ | |
67492200 GM |
104 | Lisp_Object Vwindow_list; |
105 | ||
5500c422 GM |
106 | /* The mini-buffer window of the selected frame. |
107 | Note that you cannot test for mini-bufferness of an arbitrary window | |
108 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 JB |
109 | the selected window. */ |
110 | Lisp_Object minibuf_window; | |
111 | ||
3f49fddc KS |
112 | /* Non-nil means it is the window whose mode line should be |
113 | shown as the selected window when the minibuffer is selected. */ | |
3dbab091 | 114 | Lisp_Object minibuf_selected_window; |
3f49fddc | 115 | |
a58ec57d | 116 | /* Hook run at end of temp_output_buffer_show. */ |
955cbe7b | 117 | static Lisp_Object Qtemp_buffer_show_hook; |
a58ec57d | 118 | |
7ab12479 JB |
119 | /* Incremented for each window created. */ |
120 | static int sequence_number; | |
121 | ||
5b03d3c0 RS |
122 | /* Nonzero after init_window_once has finished. */ |
123 | static int window_initialized; | |
124 | ||
543f5fb1 | 125 | /* Hook to run when window config changes. */ |
eeca6f6f | 126 | static Lisp_Object Qwindow_configuration_change_hook; |
0d384044 | 127 | |
66d43aea | 128 | /* Used by the function window_scroll_pixel_based */ |
c876b227 | 129 | static int window_scroll_pixel_based_preserve_x; |
66fe93d1 | 130 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 131 | |
c876b227 | 132 | /* Same for window_scroll_line_based. */ |
d311d28c PE |
133 | static EMACS_INT window_scroll_preserve_hpos; |
134 | static EMACS_INT window_scroll_preserve_vpos; | |
f230ecc9 | 135 | \f |
e8c17b81 | 136 | /* These setters are used only in this file, so they can be private. */ |
b0ab8123 | 137 | static void |
e8c17b81 PE |
138 | wset_combination_limit (struct window *w, Lisp_Object val) |
139 | { | |
140 | w->combination_limit = val; | |
141 | } | |
b0ab8123 | 142 | static void |
e8c17b81 PE |
143 | wset_dedicated (struct window *w, Lisp_Object val) |
144 | { | |
145 | w->dedicated = val; | |
146 | } | |
b0ab8123 | 147 | static void |
e8c17b81 PE |
148 | wset_display_table (struct window *w, Lisp_Object val) |
149 | { | |
150 | w->display_table = val; | |
151 | } | |
b0ab8123 | 152 | static void |
e8c17b81 PE |
153 | wset_hchild (struct window *w, Lisp_Object val) |
154 | { | |
155 | w->hchild = val; | |
156 | } | |
b0ab8123 | 157 | static void |
e8c17b81 PE |
158 | wset_left_fringe_width (struct window *w, Lisp_Object val) |
159 | { | |
160 | w->left_fringe_width = val; | |
161 | } | |
b0ab8123 | 162 | static void |
e8c17b81 PE |
163 | wset_left_margin_cols (struct window *w, Lisp_Object val) |
164 | { | |
165 | w->left_margin_cols = val; | |
166 | } | |
b0ab8123 | 167 | static void |
e8c17b81 PE |
168 | wset_new_normal (struct window *w, Lisp_Object val) |
169 | { | |
170 | w->new_normal = val; | |
171 | } | |
b0ab8123 | 172 | static void |
e8c17b81 PE |
173 | wset_new_total (struct window *w, Lisp_Object val) |
174 | { | |
175 | w->new_total = val; | |
176 | } | |
b0ab8123 | 177 | static void |
e8c17b81 PE |
178 | wset_normal_cols (struct window *w, Lisp_Object val) |
179 | { | |
180 | w->normal_cols = val; | |
181 | } | |
b0ab8123 | 182 | static void |
e8c17b81 PE |
183 | wset_normal_lines (struct window *w, Lisp_Object val) |
184 | { | |
185 | w->normal_lines = val; | |
186 | } | |
b0ab8123 | 187 | static void |
e8c17b81 PE |
188 | wset_parent (struct window *w, Lisp_Object val) |
189 | { | |
190 | w->parent = val; | |
191 | } | |
b0ab8123 | 192 | static void |
e8c17b81 PE |
193 | wset_pointm (struct window *w, Lisp_Object val) |
194 | { | |
195 | w->pointm = val; | |
196 | } | |
b0ab8123 | 197 | static void |
e8c17b81 PE |
198 | wset_right_fringe_width (struct window *w, Lisp_Object val) |
199 | { | |
200 | w->right_fringe_width = val; | |
201 | } | |
b0ab8123 | 202 | static void |
e8c17b81 PE |
203 | wset_right_margin_cols (struct window *w, Lisp_Object val) |
204 | { | |
205 | w->right_margin_cols = val; | |
206 | } | |
b0ab8123 | 207 | static void |
e8c17b81 PE |
208 | wset_scroll_bar_width (struct window *w, Lisp_Object val) |
209 | { | |
210 | w->scroll_bar_width = val; | |
211 | } | |
b0ab8123 | 212 | static void |
e8c17b81 PE |
213 | wset_start (struct window *w, Lisp_Object val) |
214 | { | |
215 | w->start = val; | |
216 | } | |
b0ab8123 | 217 | static void |
e8c17b81 PE |
218 | wset_temslot (struct window *w, Lisp_Object val) |
219 | { | |
220 | w->temslot = val; | |
221 | } | |
b0ab8123 | 222 | static void |
e8c17b81 PE |
223 | wset_vchild (struct window *w, Lisp_Object val) |
224 | { | |
225 | w->vchild = val; | |
226 | } | |
b0ab8123 | 227 | static void |
e8c17b81 PE |
228 | wset_vertical_scroll_bar_type (struct window *w, Lisp_Object val) |
229 | { | |
230 | w->vertical_scroll_bar_type = val; | |
231 | } | |
b0ab8123 | 232 | static void |
e8c17b81 PE |
233 | wset_window_parameters (struct window *w, Lisp_Object val) |
234 | { | |
235 | w->window_parameters = val; | |
236 | } | |
237 | ||
52162052 MR |
238 | struct window * |
239 | decode_live_window (register Lisp_Object window) | |
f230ecc9 MR |
240 | { |
241 | if (NILP (window)) | |
242 | return XWINDOW (selected_window); | |
c876b227 | 243 | |
f230ecc9 MR |
244 | CHECK_LIVE_WINDOW (window); |
245 | return XWINDOW (window); | |
246 | } | |
247 | ||
b9e9df47 | 248 | struct window * |
f230ecc9 MR |
249 | decode_any_window (register Lisp_Object window) |
250 | { | |
6e5d1c12 CY |
251 | struct window *w; |
252 | ||
f230ecc9 MR |
253 | if (NILP (window)) |
254 | return XWINDOW (selected_window); | |
255 | ||
256 | CHECK_WINDOW (window); | |
6e5d1c12 | 257 | w = XWINDOW (window); |
6e5d1c12 | 258 | return w; |
f230ecc9 | 259 | } |
666e158e | 260 | |
b52d6985 | 261 | static struct window * |
52162052 MR |
262 | decode_valid_window (register Lisp_Object window) |
263 | { | |
264 | struct window *w; | |
265 | ||
266 | if (NILP (window)) | |
267 | return XWINDOW (selected_window); | |
268 | ||
269 | CHECK_VALID_WINDOW (window); | |
270 | w = XWINDOW (window); | |
271 | return w; | |
272 | } | |
273 | ||
98a07056 DA |
274 | /* Called when W's buffer slot is changed. ARG -1 means that W is about to |
275 | cease its buffer, and 1 means that W is about to set up the new one. */ | |
276 | ||
277 | static void | |
278 | adjust_window_count (struct window *w, int arg) | |
279 | { | |
280 | eassert (eabs (arg) == 1); | |
281 | if (BUFFERP (w->buffer)) | |
282 | { | |
283 | struct buffer *b = XBUFFER (w->buffer); | |
3f781c75 | 284 | |
98a07056 DA |
285 | if (b->base_buffer) |
286 | b = b->base_buffer; | |
287 | b->window_count += arg; | |
288 | eassert (b->window_count >= 0); | |
289 | } | |
290 | } | |
291 | ||
292 | /* Set W's buffer slot to VAL and recompute number | |
293 | of windows showing VAL if it is a buffer. */ | |
294 | ||
295 | void | |
296 | wset_buffer (struct window *w, Lisp_Object val) | |
297 | { | |
298 | adjust_window_count (w, -1); | |
299 | w->buffer = val; | |
300 | adjust_window_count (w, 1); | |
301 | } | |
302 | ||
89bc0592 DA |
303 | /* Build a frequently used 4-integer (X Y W H) list. */ |
304 | ||
305 | static Lisp_Object | |
1479c557 | 306 | list4i (EMACS_INT x, EMACS_INT y, EMACS_INT w, EMACS_INT h) |
89bc0592 DA |
307 | { |
308 | return list4 (make_number (x), make_number (y), | |
309 | make_number (w), make_number (h)); | |
310 | } | |
311 | ||
7ab12479 | 312 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, |
f230ecc9 | 313 | doc: /* Return t if OBJECT is a window and nil otherwise. */) |
5842a27b | 314 | (Lisp_Object object) |
7ab12479 | 315 | { |
413430c5 | 316 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
317 | } |
318 | ||
52162052 MR |
319 | DEFUN ("window-valid-p", Fwindow_valid_p, Swindow_valid_p, 1, 1, 0, |
320 | doc: /* Return t if OBJECT is a valid window and nil otherwise. | |
321 | A valid window is either a window that displays a buffer or an internal | |
322 | window. Deleted windows are not live. */) | |
323 | (Lisp_Object object) | |
324 | { | |
325 | return WINDOW_VALID_P (object) ? Qt : Qnil; | |
326 | } | |
327 | ||
806b4d9b | 328 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
f230ecc9 | 329 | doc: /* Return t if OBJECT is a live window and nil otherwise. |
49745b39 CY |
330 | A live window is a window that displays a buffer. |
331 | Internal windows and deleted windows are not live. */) | |
5842a27b | 332 | (Lisp_Object object) |
605be8af | 333 | { |
9e571f49 | 334 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af | 335 | } |
727e958e MR |
336 | \f |
337 | /* Frames and windows. */ | |
89bc0592 | 338 | DEFUN ("window-frame", Fwindow_frame, Swindow_frame, 0, 1, 0, |
727e958e | 339 | doc: /* Return the frame that window WINDOW is on. |
52162052 | 340 | WINDOW must be a valid window and defaults to the selected one. */) |
727e958e MR |
341 | (Lisp_Object window) |
342 | { | |
52162052 | 343 | return decode_valid_window (window)->frame; |
727e958e MR |
344 | } |
345 | ||
346 | DEFUN ("frame-root-window", Fframe_root_window, Sframe_root_window, 0, 1, 0, | |
87e68db4 JB |
347 | doc: /* Return the root window of FRAME-OR-WINDOW. |
348 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
49745b39 CY |
349 | With a frame argument, return that frame's root window. |
350 | With a window argument, return the root window of that window's frame. */) | |
727e958e MR |
351 | (Lisp_Object frame_or_window) |
352 | { | |
353 | Lisp_Object window; | |
354 | ||
355 | if (NILP (frame_or_window)) | |
e69b0960 | 356 | window = SELECTED_FRAME ()->root_window; |
52162052 MR |
357 | else if (WINDOW_VALID_P (frame_or_window)) |
358 | window = XFRAME (XWINDOW (frame_or_window)->frame)->root_window; | |
727e958e MR |
359 | else |
360 | { | |
361 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 362 | window = XFRAME (frame_or_window)->root_window; |
727e958e MR |
363 | } |
364 | ||
365 | return window; | |
366 | } | |
367 | ||
368 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, | |
49745b39 CY |
369 | doc: /* Return the minibuffer window for frame FRAME. |
370 | If FRAME is omitted or nil, it defaults to the selected frame. */) | |
727e958e MR |
371 | (Lisp_Object frame) |
372 | { | |
d9f07150 | 373 | return FRAME_MINIBUF_WINDOW (decode_live_frame (frame)); |
727e958e MR |
374 | } |
375 | ||
376 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, | |
377 | Swindow_minibuffer_p, 0, 1, 0, | |
378 | doc: /* Return non-nil if WINDOW is a minibuffer window. | |
52162052 | 379 | WINDOW must be a valid window and defaults to the selected one. */) |
727e958e MR |
380 | (Lisp_Object window) |
381 | { | |
52162052 | 382 | return MINI_WINDOW_P (decode_valid_window (window)) ? Qt : Qnil; |
727e958e MR |
383 | } |
384 | ||
385 | /* Don't move this to window.el - this must be a safe routine. */ | |
386 | DEFUN ("frame-first-window", Fframe_first_window, Sframe_first_window, 0, 1, 0, | |
87e68db4 JB |
387 | doc: /* Return the topmost, leftmost live window on FRAME-OR-WINDOW. |
388 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
52162052 MR |
389 | Else if FRAME-OR-WINDOW denotes a valid window, return the first window |
390 | of that window's frame. If FRAME-OR-WINDOW denotes a live frame, return | |
727e958e MR |
391 | the first window of that frame. */) |
392 | (Lisp_Object frame_or_window) | |
393 | { | |
394 | Lisp_Object window; | |
395 | ||
396 | if (NILP (frame_or_window)) | |
e69b0960 | 397 | window = SELECTED_FRAME ()->root_window; |
52162052 | 398 | else if (WINDOW_VALID_P (frame_or_window)) |
e69b0960 | 399 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window; |
727e958e MR |
400 | else |
401 | { | |
402 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 403 | window = XFRAME (frame_or_window)->root_window; |
727e958e MR |
404 | } |
405 | ||
d3d50620 | 406 | while (NILP (XWINDOW (window)->buffer)) |
727e958e | 407 | { |
d3d50620 DA |
408 | if (! NILP (XWINDOW (window)->hchild)) |
409 | window = XWINDOW (window)->hchild; | |
410 | else if (! NILP (XWINDOW (window)->vchild)) | |
411 | window = XWINDOW (window)->vchild; | |
727e958e | 412 | else |
1088b922 | 413 | emacs_abort (); |
727e958e MR |
414 | } |
415 | ||
416 | return window; | |
417 | } | |
418 | ||
419 | DEFUN ("frame-selected-window", Fframe_selected_window, | |
420 | Sframe_selected_window, 0, 1, 0, | |
87e68db4 JB |
421 | doc: /* Return the selected window of FRAME-OR-WINDOW. |
422 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
52162052 MR |
423 | Else if FRAME-OR-WINDOW denotes a valid window, return the selected |
424 | window of that window's frame. If FRAME-OR-WINDOW denotes a live frame, | |
425 | return the selected window of that frame. */) | |
727e958e MR |
426 | (Lisp_Object frame_or_window) |
427 | { | |
428 | Lisp_Object window; | |
429 | ||
430 | if (NILP (frame_or_window)) | |
e69b0960 | 431 | window = SELECTED_FRAME ()->selected_window; |
52162052 | 432 | else if (WINDOW_VALID_P (frame_or_window)) |
e69b0960 | 433 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->selected_window; |
727e958e MR |
434 | else |
435 | { | |
436 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 437 | window = XFRAME (frame_or_window)->selected_window; |
727e958e MR |
438 | } |
439 | ||
440 | return window; | |
441 | } | |
442 | ||
443 | DEFUN ("set-frame-selected-window", Fset_frame_selected_window, | |
444 | Sset_frame_selected_window, 2, 3, 0, | |
445 | doc: /* Set selected window of FRAME to WINDOW. | |
446 | FRAME must be a live frame and defaults to the selected one. If FRAME | |
447 | is the selected frame, this makes WINDOW the selected window. Optional | |
448 | argument NORECORD non-nil means to neither change the order of recently | |
449 | selected windows nor the buffer list. WINDOW must denote a live window. | |
450 | Return WINDOW. */) | |
451 | (Lisp_Object frame, Lisp_Object window, Lisp_Object norecord) | |
452 | { | |
453 | if (NILP (frame)) | |
454 | frame = selected_frame; | |
455 | ||
456 | CHECK_LIVE_FRAME (frame); | |
457 | CHECK_LIVE_WINDOW (window); | |
458 | ||
459 | if (! EQ (frame, WINDOW_FRAME (XWINDOW (window)))) | |
460 | error ("In `set-frame-selected-window', WINDOW is not on FRAME"); | |
461 | ||
462 | if (EQ (frame, selected_frame)) | |
463 | return Fselect_window (window, norecord); | |
464 | else | |
f00af5b1 PE |
465 | { |
466 | fset_selected_window (XFRAME (frame), window); | |
467 | return window; | |
468 | } | |
727e958e MR |
469 | } |
470 | ||
471 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
472 | doc: /* Return the selected window. | |
473 | The selected window is the window in which the standard cursor for | |
474 | selected windows appears and to which many commands apply. */) | |
475 | (void) | |
476 | { | |
477 | return selected_window; | |
478 | } | |
479 | ||
9397e56f MR |
480 | int window_select_count; |
481 | ||
727e958e MR |
482 | /* If select_window is called with inhibit_point_swap non-zero it will |
483 | not store point of the old selected window's buffer back into that | |
484 | window's pointm slot. This is needed by Fset_window_configuration to | |
485 | avoid that the display routine is called with selected_window set to | |
486 | Qnil causing a subsequent crash. */ | |
487 | static Lisp_Object | |
488 | select_window (Lisp_Object window, Lisp_Object norecord, int inhibit_point_swap) | |
489 | { | |
490 | register struct window *w; | |
727e958e MR |
491 | struct frame *sf; |
492 | ||
493 | CHECK_LIVE_WINDOW (window); | |
494 | ||
495 | w = XWINDOW (window); | |
496 | w->frozen_window_start_p = 0; | |
497 | ||
498 | if (NILP (norecord)) | |
499 | { | |
45942c7d | 500 | w->use_time = ++window_select_count; |
d3d50620 | 501 | record_buffer (w->buffer); |
727e958e MR |
502 | } |
503 | ||
734fbd86 MR |
504 | /* Make the selected window's buffer current. */ |
505 | Fset_buffer (w->buffer); | |
506 | ||
727e958e MR |
507 | if (EQ (window, selected_window) && !inhibit_point_swap) |
508 | return window; | |
509 | ||
510 | sf = SELECTED_FRAME (); | |
511 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
512 | { | |
f00af5b1 | 513 | fset_selected_window (XFRAME (WINDOW_FRAME (w)), window); |
727e958e MR |
514 | /* Use this rather than Fhandle_switch_frame |
515 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
516 | move around in the state where a minibuffer in a separate | |
517 | frame is active. */ | |
518 | Fselect_frame (WINDOW_FRAME (w), norecord); | |
519 | /* Fselect_frame called us back so we've done all the work already. */ | |
520 | eassert (EQ (window, selected_window)); | |
521 | return window; | |
522 | } | |
523 | else | |
f00af5b1 | 524 | fset_selected_window (sf, window); |
727e958e | 525 | |
1e101a4b SM |
526 | select_window_1 (window, inhibit_point_swap); |
527 | ||
528 | bset_last_selected_window (XBUFFER (w->buffer), window); | |
529 | windows_or_buffers_changed++; | |
530 | return window; | |
531 | } | |
532 | ||
533 | /* Select window with a minimum of fuss, i.e. don't record the change anywhere | |
3f781c75 | 534 | (not even for redisplay's benefit), and assume that the window's frame is |
1e101a4b | 535 | already selected. */ |
12384b01 | 536 | static void |
1e101a4b SM |
537 | select_window_1 (Lisp_Object window, bool inhibit_point_swap) |
538 | { | |
734fbd86 MR |
539 | /* Store the old selected window's buffer's point in pointm of the old |
540 | selected window. It belongs to that window, and when the window is | |
541 | not selected, must be in the window. */ | |
727e958e MR |
542 | if (!inhibit_point_swap) |
543 | { | |
1e101a4b | 544 | struct window *ow = XWINDOW (selected_window); |
d3d50620 DA |
545 | if (! NILP (ow->buffer)) |
546 | set_marker_both (ow->pointm, ow->buffer, | |
547 | BUF_PT (XBUFFER (ow->buffer)), | |
548 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
727e958e MR |
549 | } |
550 | ||
551 | selected_window = window; | |
727e958e MR |
552 | |
553 | /* Go to the point recorded in the window. | |
554 | This is important when the buffer is in more | |
555 | than one window. It also matters when | |
556 | redisplay_window has altered point after scrolling, | |
557 | because it makes the change only in the window. */ | |
558 | { | |
1e101a4b | 559 | register ptrdiff_t new_point = marker_position (XWINDOW (window)->pointm); |
727e958e MR |
560 | if (new_point < BEGV) |
561 | SET_PT (BEGV); | |
562 | else if (new_point > ZV) | |
563 | SET_PT (ZV); | |
564 | else | |
565 | SET_PT (new_point); | |
566 | } | |
727e958e MR |
567 | } |
568 | ||
569 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, | |
94900bfe MR |
570 | doc: /* Select WINDOW which must be a live window. |
571 | Also make WINDOW's frame the selected frame and WINDOW that frame's | |
572 | selected window. In addition, make WINDOW's buffer current and set that | |
573 | buffer's value of `point' to the value of WINDOW's `window-point'. | |
574 | Return WINDOW. | |
727e958e MR |
575 | |
576 | Optional second arg NORECORD non-nil means do not put this buffer at the | |
577 | front of the buffer list and do not make this window the most recently | |
578 | selected one. | |
605be8af | 579 | |
727e958e MR |
580 | Note that the main editor command loop sets the current buffer to the |
581 | buffer of the selected window before each command. */) | |
582 | (register Lisp_Object window, Lisp_Object norecord) | |
583 | { | |
584 | return select_window (window, norecord, 0); | |
585 | } | |
586 | \f | |
bf60a96b | 587 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
49745b39 CY |
588 | doc: /* Return the buffer displayed in window WINDOW. |
589 | If WINDOW is omitted or nil, it defaults to the selected window. | |
590 | Return nil for an internal window or a deleted window. */) | |
bf60a96b MR |
591 | (Lisp_Object window) |
592 | { | |
d3d50620 | 593 | return decode_any_window (window)->buffer; |
bf60a96b MR |
594 | } |
595 | ||
596 | DEFUN ("window-parent", Fwindow_parent, Swindow_parent, 0, 1, 0, | |
49745b39 | 597 | doc: /* Return the parent window of window WINDOW. |
52162052 | 598 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 | 599 | Return nil for a window with no parent (e.g. a root window). */) |
bf60a96b MR |
600 | (Lisp_Object window) |
601 | { | |
52162052 | 602 | return decode_valid_window (window)->parent; |
bf60a96b MR |
603 | } |
604 | ||
89bc0592 | 605 | DEFUN ("window-top-child", Fwindow_top_child, Swindow_top_child, 0, 1, 0, |
49745b39 | 606 | doc: /* Return the topmost child window of window WINDOW. |
52162052 | 607 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 CY |
608 | Return nil if WINDOW is a live window (live windows have no children). |
609 | Return nil if WINDOW is an internal window whose children form a | |
610 | horizontal combination. */) | |
bf60a96b MR |
611 | (Lisp_Object window) |
612 | { | |
52162052 | 613 | return decode_valid_window (window)->vchild; |
bf60a96b MR |
614 | } |
615 | ||
89bc0592 | 616 | DEFUN ("window-left-child", Fwindow_left_child, Swindow_left_child, 0, 1, 0, |
49745b39 | 617 | doc: /* Return the leftmost child window of window WINDOW. |
52162052 | 618 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 CY |
619 | Return nil if WINDOW is a live window (live windows have no children). |
620 | Return nil if WINDOW is an internal window whose children form a | |
621 | vertical combination. */) | |
bf60a96b MR |
622 | (Lisp_Object window) |
623 | { | |
52162052 | 624 | return decode_valid_window (window)->hchild; |
bf60a96b MR |
625 | } |
626 | ||
d68443dc | 627 | DEFUN ("window-next-sibling", Fwindow_next_sibling, Swindow_next_sibling, 0, 1, 0, |
49745b39 | 628 | doc: /* Return the next sibling window of window WINDOW. |
52162052 | 629 | WINDOW must be a valid window and defaults to the selected one. |
d68443dc | 630 | Return nil if WINDOW has no next sibling. */) |
bf60a96b MR |
631 | (Lisp_Object window) |
632 | { | |
52162052 | 633 | return decode_valid_window (window)->next; |
bf60a96b MR |
634 | } |
635 | ||
d68443dc | 636 | DEFUN ("window-prev-sibling", Fwindow_prev_sibling, Swindow_prev_sibling, 0, 1, 0, |
49745b39 | 637 | doc: /* Return the previous sibling window of window WINDOW. |
52162052 | 638 | WINDOW must be a valid window and defaults to the selected one. |
d68443dc | 639 | Return nil if WINDOW has no previous sibling. */) |
bf60a96b MR |
640 | (Lisp_Object window) |
641 | { | |
52162052 | 642 | return decode_valid_window (window)->prev; |
bf60a96b | 643 | } |
67492200 | 644 | |
72f94d4b | 645 | DEFUN ("window-combination-limit", Fwindow_combination_limit, Swindow_combination_limit, 1, 1, 0, |
b6f67890 | 646 | doc: /* Return combination limit of window WINDOW. |
be7f5545 | 647 | If the return value is nil, child windows of WINDOW can be recombined with |
b6f67890 | 648 | WINDOW's siblings. A return value of t means that child windows of |
72f94d4b DA |
649 | WINDOW are never \(re-)combined with WINDOW's siblings. |
650 | ||
651 | WINDOW must be a valid window. The return value is meaningful for | |
652 | internal windows only. */) | |
496e208e | 653 | (Lisp_Object window) |
7ab12479 | 654 | { |
72f94d4b DA |
655 | CHECK_VALID_WINDOW (window); |
656 | return XWINDOW (window)->combination_limit; | |
7ab12479 | 657 | } |
53bb6b99 | 658 | |
b6f67890 | 659 | DEFUN ("set-window-combination-limit", Fset_window_combination_limit, Sset_window_combination_limit, 2, 2, 0, |
d2999b1a | 660 | doc: /* Set combination limit of window WINDOW to LIMIT; return LIMIT. |
8e17c9ba MR |
661 | If LIMIT is nil, child windows of WINDOW can be recombined with WINDOW's |
662 | siblings. LIMIT t means that child windows of WINDOW are never | |
663 | \(re-)combined with WINDOW's siblings. Other values are reserved for | |
fdaf534a MR |
664 | future use. |
665 | ||
666 | WINDOW must be a valid window. Setting the combination limit is | |
667 | meaningful for internal windows only. */) | |
d2999b1a | 668 | (Lisp_Object window, Lisp_Object limit) |
b3a10345 | 669 | { |
e8c17b81 PE |
670 | wset_combination_limit (decode_valid_window (window), limit); |
671 | return limit; | |
496e208e | 672 | } |
7bbc67d2 | 673 | |
496e208e | 674 | DEFUN ("window-use-time", Fwindow_use_time, Swindow_use_time, 0, 1, 0, |
49745b39 | 675 | doc: /* Return the use time of window WINDOW. |
52162052 | 676 | WINDOW must be a live window and defaults to the selected one. |
49745b39 CY |
677 | The window with the highest use time is the most recently selected |
678 | one. The window with the lowest use time is the least recently | |
679 | selected one. */) | |
496e208e MR |
680 | (Lisp_Object window) |
681 | { | |
52162052 | 682 | return make_number (decode_live_window (window)->use_time); |
496e208e | 683 | } |
abde8f8c | 684 | \f |
105216ed CY |
685 | DEFUN ("window-total-height", Fwindow_total_height, Swindow_total_height, 0, 1, 0, |
686 | doc: /* Return the total height, in lines, of window WINDOW. | |
52162052 | 687 | WINDOW must be a valid window and defaults to the selected one. |
b3a10345 | 688 | |
105216ed CY |
689 | The return value includes the mode line and header line, if any. |
690 | If WINDOW is an internal window, the total height is the height | |
691 | of the screen areas spanned by its children. | |
536833ab | 692 | |
105216ed CY |
693 | On a graphical display, this total height is reported as an |
694 | integer multiple of the default character height. */) | |
695 | (Lisp_Object window) | |
496e208e | 696 | { |
52162052 | 697 | return decode_valid_window (window)->total_lines; |
105216ed | 698 | } |
536833ab | 699 | |
105216ed CY |
700 | DEFUN ("window-total-width", Fwindow_total_width, Swindow_total_width, 0, 1, 0, |
701 | doc: /* Return the total width, in columns, of window WINDOW. | |
52162052 | 702 | WINDOW must be a valid window and defaults to the selected one. |
b3a10345 | 703 | |
105216ed CY |
704 | The return value includes any vertical dividers or scroll bars |
705 | belonging to WINDOW. If WINDOW is an internal window, the total width | |
706 | is the width of the screen areas spanned by its children. | |
b3a10345 | 707 | |
105216ed CY |
708 | On a graphical display, this total width is reported as an |
709 | integer multiple of the default character width. */) | |
496e208e MR |
710 | (Lisp_Object window) |
711 | { | |
52162052 | 712 | return decode_valid_window (window)->total_cols; |
abde8f8c | 713 | } |
b3a10345 | 714 | |
496e208e | 715 | DEFUN ("window-new-total", Fwindow_new_total, Swindow_new_total, 0, 1, 0, |
49745b39 | 716 | doc: /* Return the new total size of window WINDOW. |
52162052 | 717 | WINDOW must be a valid window and defaults to the selected one. */) |
496e208e MR |
718 | (Lisp_Object window) |
719 | { | |
52162052 | 720 | return decode_valid_window (window)->new_total; |
496e208e MR |
721 | } |
722 | ||
723 | DEFUN ("window-normal-size", Fwindow_normal_size, Swindow_normal_size, 0, 2, 0, | |
49745b39 | 724 | doc: /* Return the normal height of window WINDOW. |
52162052 | 725 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 | 726 | If HORIZONTAL is non-nil, return the normal width of WINDOW. */) |
496e208e MR |
727 | (Lisp_Object window, Lisp_Object horizontal) |
728 | { | |
52162052 | 729 | struct window *w = decode_valid_window (window); |
d3d50620 DA |
730 | |
731 | return NILP (horizontal) ? w->normal_lines : w->normal_cols; | |
496e208e MR |
732 | } |
733 | ||
734 | DEFUN ("window-new-normal", Fwindow_new_normal, Swindow_new_normal, 0, 1, 0, | |
49745b39 | 735 | doc: /* Return new normal size of window WINDOW. |
52162052 | 736 | WINDOW must be a valid window and defaults to the selected one. */) |
496e208e MR |
737 | (Lisp_Object window) |
738 | { | |
52162052 | 739 | return decode_valid_window (window)->new_normal; |
496e208e MR |
740 | } |
741 | ||
abde8f8c | 742 | DEFUN ("window-left-column", Fwindow_left_column, Swindow_left_column, 0, 1, 0, |
49745b39 | 743 | doc: /* Return left column of window WINDOW. |
105216ed CY |
744 | This is the distance, in columns, between the left edge of WINDOW and |
745 | the left edge of the frame's window area. For instance, the return | |
746 | value is 0 if there is no window to the left of WINDOW. | |
747 | ||
52162052 | 748 | WINDOW must be a valid window and defaults to the selected one. */) |
abde8f8c MR |
749 | (Lisp_Object window) |
750 | { | |
52162052 | 751 | return decode_valid_window (window)->left_col; |
abde8f8c MR |
752 | } |
753 | ||
754 | DEFUN ("window-top-line", Fwindow_top_line, Swindow_top_line, 0, 1, 0, | |
49745b39 | 755 | doc: /* Return top line of window WINDOW. |
105216ed CY |
756 | This is the distance, in lines, between the top of WINDOW and the top |
757 | of the frame's window area. For instance, the return value is 0 if | |
758 | there is no window above WINDOW. | |
759 | ||
52162052 | 760 | WINDOW must be a valid window and defaults to the selected one. */) |
abde8f8c MR |
761 | (Lisp_Object window) |
762 | { | |
52162052 | 763 | return decode_valid_window (window)->top_line; |
abde8f8c MR |
764 | } |
765 | ||
766 | /* Return the number of lines of W's body. Don't count any mode or | |
767 | header line of W. */ | |
768 | ||
46a4ce9e | 769 | static int |
abde8f8c MR |
770 | window_body_lines (struct window *w) |
771 | { | |
d3d50620 | 772 | int height = XFASTINT (w->total_lines); |
abde8f8c MR |
773 | |
774 | if (!MINI_WINDOW_P (w)) | |
775 | { | |
776 | if (WINDOW_WANTS_MODELINE_P (w)) | |
777 | --height; | |
778 | if (WINDOW_WANTS_HEADER_LINE_P (w)) | |
779 | --height; | |
780 | } | |
781 | ||
782 | return height; | |
783 | } | |
784 | ||
785 | /* Return the number of columns of W's body. Don't count columns | |
786 | occupied by the scroll bar or the vertical bar separating W from its | |
787 | right sibling. On window-systems don't count fringes or display | |
788 | margins either. */ | |
789 | ||
790 | int | |
791 | window_body_cols (struct window *w) | |
792 | { | |
793 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
d3d50620 | 794 | int width = XINT (w->total_cols); |
abde8f8c MR |
795 | |
796 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) | |
797 | /* Scroll bars occupy a few columns. */ | |
798 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); | |
799 | else if (!FRAME_WINDOW_P (f) | |
800 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
801 | /* The column of `|' characters separating side-by-side windows | |
802 | occupies one column only. */ | |
803 | width -= 1; | |
804 | ||
f1665bdc EZ |
805 | /* Display margins cannot be used for normal text. */ |
806 | width -= WINDOW_LEFT_MARGIN_COLS (w) + WINDOW_RIGHT_MARGIN_COLS (w); | |
807 | ||
abde8f8c | 808 | if (FRAME_WINDOW_P (f)) |
f1665bdc EZ |
809 | /* On window-systems, fringes cannot be used for normal text. */ |
810 | width -= WINDOW_FRINGE_COLS (w); | |
abde8f8c MR |
811 | |
812 | return width; | |
813 | } | |
814 | ||
105216ed CY |
815 | DEFUN ("window-body-height", Fwindow_body_height, Swindow_body_height, 0, 1, 0, |
816 | doc: /* Return the height, in lines, of WINDOW's text area. | |
52162052 | 817 | WINDOW must be a live window and defaults to the selected one. |
89bd5ee1 | 818 | |
105216ed CY |
819 | The returned height does not include the mode line or header line. |
820 | On a graphical display, the height is expressed as an integer multiple | |
821 | of the default character height. If a line at the bottom of the text | |
822 | area is only partially visible, that counts as a whole line; to | |
823 | exclude partially-visible lines, use `window-text-height'. */) | |
824 | (Lisp_Object window) | |
abde8f8c | 825 | { |
b6a9e8b1 | 826 | return make_number (window_body_lines (decode_live_window (window))); |
105216ed | 827 | } |
abde8f8c | 828 | |
105216ed CY |
829 | DEFUN ("window-body-width", Fwindow_body_width, Swindow_body_width, 0, 1, 0, |
830 | doc: /* Return the width, in columns, of WINDOW's text area. | |
52162052 | 831 | WINDOW must be a live window and defaults to the selected one. |
105216ed CY |
832 | |
833 | The return value does not include any vertical dividers, fringe or | |
834 | marginal areas, or scroll bars. On a graphical display, the width is | |
835 | expressed as an integer multiple of the default character width. */) | |
836 | (Lisp_Object window) | |
837 | { | |
b6a9e8b1 | 838 | return make_number (window_body_cols (decode_live_window (window))); |
abde8f8c | 839 | } |
536833ab | 840 | |
7ab12479 | 841 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 | 842 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
496e208e | 843 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 844 | (Lisp_Object window) |
7ab12479 | 845 | { |
52162052 | 846 | return make_number (decode_live_window (window)->hscroll); |
7ab12479 JB |
847 | } |
848 | ||
24a212eb PE |
849 | /* Set W's horizontal scroll amount to HSCROLL clipped to a reasonable |
850 | range, returning the new amount as a fixnum. */ | |
851 | static Lisp_Object | |
852 | set_window_hscroll (struct window *w, EMACS_INT hscroll) | |
853 | { | |
4e71fd89 PE |
854 | /* Horizontal scrolling has problems with large scroll amounts. |
855 | It's too slow with long lines, and even with small lines the | |
856 | display can be messed up. For now, though, impose only the limits | |
857 | required by the internal representation: horizontal scrolling must | |
858 | fit in fixnum (since it's visible to Elisp) and into ptrdiff_t | |
859 | (since it's stored in a ptrdiff_t). */ | |
860 | ptrdiff_t hscroll_max = min (MOST_POSITIVE_FIXNUM, PTRDIFF_MAX); | |
861 | ptrdiff_t new_hscroll = clip_to_bounds (0, hscroll, hscroll_max); | |
24a212eb PE |
862 | |
863 | /* Prevent redisplay shortcuts when changing the hscroll. */ | |
864 | if (w->hscroll != new_hscroll) | |
d3d50620 | 865 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
24a212eb PE |
866 | |
867 | w->hscroll = new_hscroll; | |
868 | return make_number (new_hscroll); | |
869 | } | |
870 | ||
7ab12479 | 871 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, |
fdb82f93 | 872 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
52162052 | 873 | WINDOW must be a live window and defaults to the selected one. |
24a212eb PE |
874 | Clip the number to a reasonable value if out of range. |
875 | Return the new number. NCOL should be zero or positive. | |
ebadb1e4 EZ |
876 | |
877 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 878 | window so that the location of point moves off-window. */) |
5842a27b | 879 | (Lisp_Object window, Lisp_Object ncol) |
7ab12479 | 880 | { |
b7826503 | 881 | CHECK_NUMBER (ncol); |
89bc0592 | 882 | return set_window_hscroll (decode_live_window (window), XINT (ncol)); |
7ab12479 JB |
883 | } |
884 | ||
190eb263 RS |
885 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
886 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 887 | doc: /* Return WINDOW's redisplay end trigger value. |
52162052 | 888 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 889 | See `set-window-redisplay-end-trigger' for more information. */) |
5842a27b | 890 | (Lisp_Object window) |
190eb263 | 891 | { |
52162052 | 892 | return decode_live_window (window)->redisplay_end_trigger; |
190eb263 RS |
893 | } |
894 | ||
895 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
896 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 | 897 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
52162052 MR |
898 | WINDOW must be a live window and defaults to the selected one. VALUE |
899 | should be a buffer position (typically a marker) or nil. If it is a | |
900 | buffer position, then if redisplay in WINDOW reaches a position beyond | |
901 | VALUE, the functions in `redisplay-end-trigger-functions' are called | |
902 | with two arguments: WINDOW, and the end trigger value. Afterwards the | |
903 | end-trigger value is reset to nil. */) | |
5842a27b | 904 | (register Lisp_Object window, Lisp_Object value) |
190eb263 | 905 | { |
e8c17b81 PE |
906 | wset_redisplay_end_trigger (decode_live_window (window), value); |
907 | return value; | |
190eb263 RS |
908 | } |
909 | ||
7ab12479 | 910 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 | 911 | doc: /* Return a list of the edge coordinates of WINDOW. |
52162052 MR |
912 | WINDOW must be a valid window and defaults to the selected one. |
913 | ||
914 | The returned list has the form (LEFT TOP RIGHT BOTTOM). TOP and BOTTOM | |
915 | count by lines, and LEFT and RIGHT count by columns, all relative to 0, | |
916 | 0 at top left corner of frame. | |
917 | ||
918 | RIGHT is one more than the rightmost column occupied by WINDOW. BOTTOM | |
919 | is one more than the bottommost row occupied by WINDOW. The edges | |
920 | include the space used by WINDOW's scroll bar, display margins, fringes, | |
921 | header line, and/or mode line. For the edges of just the text area, use | |
922 | `window-inside-edges'. */) | |
5842a27b | 923 | (Lisp_Object window) |
7ab12479 | 924 | { |
52162052 | 925 | register struct window *w = decode_valid_window (window); |
7ab12479 | 926 | |
1479c557 PE |
927 | return list4i (WINDOW_LEFT_EDGE_COL (w), WINDOW_TOP_EDGE_LINE (w), |
928 | WINDOW_RIGHT_EDGE_COL (w), WINDOW_BOTTOM_EDGE_LINE (w)); | |
7ab12479 JB |
929 | } |
930 | ||
c99a9eb3 RS |
931 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
932 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
52162052 MR |
933 | WINDOW must be a valid window and defaults to the selected one. |
934 | ||
935 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
936 | 0, 0 at the top left corner of the frame. | |
b35ac83e CY |
937 | |
938 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
939 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
940 | The pixel edges include the space used by WINDOW's scroll bar, display | |
941 | margins, fringes, header line, and/or mode line. For the pixel edges | |
942 | of just the text area, use `window-inside-pixel-edges'. */) | |
5842a27b | 943 | (Lisp_Object window) |
c99a9eb3 | 944 | { |
52162052 | 945 | register struct window *w = decode_valid_window (window); |
c99a9eb3 | 946 | |
1479c557 PE |
947 | return list4i (WINDOW_LEFT_EDGE_X (w), WINDOW_TOP_EDGE_Y (w), |
948 | WINDOW_RIGHT_EDGE_X (w), WINDOW_BOTTOM_EDGE_Y (w)); | |
c99a9eb3 RS |
949 | } |
950 | ||
9d5405ec | 951 | static void |
5e617bc2 | 952 | calc_absolute_offset (struct window *w, int *add_x, int *add_y) |
9d5405ec | 953 | { |
d3d50620 | 954 | struct frame *f = XFRAME (w->frame); |
9d5405ec J |
955 | *add_y = f->top_pos; |
956 | #ifdef FRAME_MENUBAR_HEIGHT | |
957 | *add_y += FRAME_MENUBAR_HEIGHT (f); | |
958 | #endif | |
bfeabdc3 JD |
959 | #ifdef FRAME_TOOLBAR_TOP_HEIGHT |
960 | *add_y += FRAME_TOOLBAR_TOP_HEIGHT (f); | |
961 | #elif FRAME_TOOLBAR_HEIGHT | |
9d5405ec J |
962 | *add_y += FRAME_TOOLBAR_HEIGHT (f); |
963 | #endif | |
964 | #ifdef FRAME_NS_TITLEBAR_HEIGHT | |
965 | *add_y += FRAME_NS_TITLEBAR_HEIGHT (f); | |
966 | #endif | |
967 | *add_x = f->left_pos; | |
bfeabdc3 JD |
968 | #ifdef FRAME_TOOLBAR_LEFT_WIDTH |
969 | *add_x += FRAME_TOOLBAR_LEFT_WIDTH (f); | |
970 | #endif | |
9d5405ec J |
971 | } |
972 | ||
973 | DEFUN ("window-absolute-pixel-edges", Fwindow_absolute_pixel_edges, | |
974 | Swindow_absolute_pixel_edges, 0, 1, 0, | |
975 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
52162052 MR |
976 | WINDOW must be a valid window and defaults to the selected one. |
977 | ||
978 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
979 | 0, 0 at the top left corner of the display. | |
9d5405ec J |
980 | |
981 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
982 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
983 | The pixel edges include the space used by WINDOW's scroll bar, display | |
984 | margins, fringes, header line, and/or mode line. For the pixel edges | |
c49d071a | 985 | of just the text area, use `window-inside-absolute-pixel-edges'. */) |
5842a27b | 986 | (Lisp_Object window) |
9d5405ec | 987 | { |
52162052 | 988 | register struct window *w = decode_valid_window (window); |
9d5405ec | 989 | int add_x, add_y; |
89bc0592 | 990 | |
ed3751c8 | 991 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec | 992 | |
1479c557 PE |
993 | return list4i (WINDOW_LEFT_EDGE_X (w) + add_x, |
994 | WINDOW_TOP_EDGE_Y (w) + add_y, | |
995 | WINDOW_RIGHT_EDGE_X (w) + add_x, | |
996 | WINDOW_BOTTOM_EDGE_Y (w) + add_y); | |
9d5405ec J |
997 | } |
998 | ||
c99a9eb3 RS |
999 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, |
1000 | doc: /* Return a list of the edge coordinates of WINDOW. | |
52162052 MR |
1001 | WINDOW must be a live window and defaults to the selected one. |
1002 | ||
1003 | The returned list has the form (LEFT TOP RIGHT BOTTOM). TOP and BOTTOM | |
1004 | count by lines, and LEFT and RIGHT count by columns, all relative to 0, | |
1005 | 0 at top left corner of frame. | |
b35ac83e CY |
1006 | |
1007 | RIGHT is one more than the rightmost column of WINDOW's text area. | |
52162052 MR |
1008 | BOTTOM is one more than the bottommost row of WINDOW's text area. The |
1009 | inside edges do not include the space used by the WINDOW's scroll bar, | |
1010 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 1011 | (Lisp_Object window) |
c99a9eb3 | 1012 | { |
52162052 | 1013 | register struct window *w = decode_live_window (window); |
c99a9eb3 | 1014 | |
1479c557 PE |
1015 | return list4i ((WINDOW_BOX_LEFT_EDGE_COL (w) |
1016 | + WINDOW_LEFT_MARGIN_COLS (w) | |
1017 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
1018 | (WINDOW_TOP_EDGE_LINE (w) | |
1019 | + WINDOW_HEADER_LINE_LINES (w)), | |
1020 | (WINDOW_BOX_RIGHT_EDGE_COL (w) | |
1021 | - WINDOW_RIGHT_MARGIN_COLS (w) | |
1022 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
1023 | (WINDOW_BOTTOM_EDGE_LINE (w) | |
1024 | - WINDOW_MODE_LINE_LINES (w))); | |
c99a9eb3 RS |
1025 | } |
1026 | ||
1027 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
2fbdc249 | 1028 | doc: /* Return a list of the edge pixel coordinates of WINDOW's text area. |
52162052 MR |
1029 | WINDOW must be a live window and defaults to the selected one. |
1030 | ||
1031 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
1032 | (0,0) at the top left corner of the frame's window area. | |
b35ac83e CY |
1033 | |
1034 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
1035 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
1036 | The inside edges do not include the space used by WINDOW's scroll bar, | |
c99a9eb3 | 1037 | display margins, fringes, header line, and/or mode line. */) |
5842a27b | 1038 | (Lisp_Object window) |
c99a9eb3 | 1039 | { |
52162052 | 1040 | register struct window *w = decode_live_window (window); |
c99a9eb3 | 1041 | |
1479c557 PE |
1042 | return list4i ((WINDOW_BOX_LEFT_EDGE_X (w) |
1043 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
1044 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
1045 | (WINDOW_TOP_EDGE_Y (w) | |
1046 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
1047 | (WINDOW_BOX_RIGHT_EDGE_X (w) | |
1048 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
1049 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
1050 | (WINDOW_BOTTOM_EDGE_Y (w) | |
1051 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
c99a9eb3 RS |
1052 | } |
1053 | ||
9d5405ec J |
1054 | DEFUN ("window-inside-absolute-pixel-edges", |
1055 | Fwindow_inside_absolute_pixel_edges, | |
1056 | Swindow_inside_absolute_pixel_edges, 0, 1, 0, | |
2fbdc249 | 1057 | doc: /* Return a list of the edge pixel coordinates of WINDOW's text area. |
52162052 MR |
1058 | WINDOW must be a live window and defaults to the selected one. |
1059 | ||
1060 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
1061 | (0,0) at the top left corner of the frame's window area. | |
9d5405ec J |
1062 | |
1063 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
1064 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
1065 | The inside edges do not include the space used by WINDOW's scroll bar, | |
1066 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 1067 | (Lisp_Object window) |
9d5405ec | 1068 | { |
52162052 | 1069 | register struct window *w = decode_live_window (window); |
9d5405ec | 1070 | int add_x, add_y; |
89bc0592 | 1071 | |
ed3751c8 | 1072 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec | 1073 | |
1479c557 PE |
1074 | return list4i ((WINDOW_BOX_LEFT_EDGE_X (w) |
1075 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
1076 | + WINDOW_LEFT_FRINGE_WIDTH (w) + add_x), | |
1077 | (WINDOW_TOP_EDGE_Y (w) | |
1078 | + WINDOW_HEADER_LINE_HEIGHT (w) + add_y), | |
1079 | (WINDOW_BOX_RIGHT_EDGE_X (w) | |
1080 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
1081 | - WINDOW_RIGHT_FRINGE_WIDTH (w) + add_x), | |
1082 | (WINDOW_BOTTOM_EDGE_Y (w) | |
1083 | - WINDOW_MODE_LINE_HEIGHT (w) + add_y)); | |
9d5405ec J |
1084 | } |
1085 | ||
9173a8fb | 1086 | /* Test if the character at column X, row Y is within window W. |
341f3858 | 1087 | If it is not, return ON_NOTHING; |
9173a8fb | 1088 | if it is in the window's text area, return ON_TEXT; |
341f3858 | 1089 | if it is on the window's modeline, return ON_MODE_LINE; |
d5783c40 | 1090 | if it is on the border between the window and its right sibling, |
341f3858 | 1091 | return ON_VERTICAL_BORDER. |
9173a8fb | 1092 | if it is on a scroll bar, return ON_SCROLL_BAR. |
341f3858 | 1093 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 1094 | if it is in left or right fringe of the window, |
9173a8fb | 1095 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE; |
49b996e7 | 1096 | if it is in the marginal area to the left/right of the window, |
9173a8fb | 1097 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN. |
5500c422 GM |
1098 | |
1099 | X and Y are frame relative pixel coordinates. */ | |
1100 | ||
7442878f | 1101 | static enum window_part |
9173a8fb | 1102 | coordinates_in_window (register struct window *w, int x, int y) |
d5783c40 | 1103 | { |
b0228ace | 1104 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
7442878f | 1105 | enum window_part part; |
949cf20f | 1106 | int ux = FRAME_COLUMN_WIDTH (f); |
c7b08b0d MR |
1107 | int left_x = WINDOW_LEFT_EDGE_X (w); |
1108 | int right_x = WINDOW_RIGHT_EDGE_X (w); | |
1109 | int top_y = WINDOW_TOP_EDGE_Y (w); | |
1110 | int bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
dad75588 GM |
1111 | /* The width of the area where the vertical line can be dragged. |
1112 | (Between mode lines for instance. */ | |
1113 | int grabbable_width = ux; | |
949cf20f | 1114 | int lmargin_width, rmargin_width, text_left, text_right; |
9173a8fb | 1115 | |
c7b08b0d MR |
1116 | /* Outside any interesting row or column? */ |
1117 | if (y < top_y || y >= bottom_y || x < left_x || x >= right_x) | |
9173a8fb | 1118 | return ON_NOTHING; |
b0228ace | 1119 | |
c7b08b0d MR |
1120 | /* On the mode line or header line? */ |
1121 | if ((WINDOW_WANTS_MODELINE_P (w) | |
1122 | && y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w) | |
1123 | && (part = ON_MODE_LINE)) | |
1124 | || (WINDOW_WANTS_HEADER_LINE_P (w) | |
1125 | && y < top_y + CURRENT_HEADER_LINE_HEIGHT (w) | |
1126 | && (part = ON_HEADER_LINE))) | |
1127 | { | |
1128 | /* If it's under/over the scroll bar portion of the mode/header | |
1129 | line, say it's on the vertical line. That's to be able to | |
1130 | resize windows horizontally in case we're using toolkit scroll | |
1131 | bars. Note: If scrollbars are on the left, the window that | |
1132 | must be eventually resized is that on the left of WINDOW. */ | |
1133 | if ((WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) | |
1134 | && !WINDOW_LEFTMOST_P (w) | |
1135 | && eabs (x - left_x) < grabbable_width) | |
1136 | || (!WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) | |
1137 | && !WINDOW_RIGHTMOST_P (w) | |
1138 | && eabs (x - right_x) < grabbable_width)) | |
1139 | return ON_VERTICAL_BORDER; | |
1140 | else | |
1141 | return part; | |
1142 | } | |
1143 | ||
466539bc EZ |
1144 | /* In what's below, we subtract 1 when computing right_x because we |
1145 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
1146 | if (w->pseudo_window_p) |
1147 | { | |
1148 | left_x = 0; | |
949cf20f | 1149 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
5500c422 GM |
1150 | } |
1151 | else | |
1152 | { | |
949cf20f KS |
1153 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
1154 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
5500c422 | 1155 | } |
37962e60 | 1156 | |
949cf20f | 1157 | /* Outside any interesting column? */ |
9173a8fb CY |
1158 | if (x < left_x || x > right_x) |
1159 | return ON_SCROLL_BAR; | |
949cf20f KS |
1160 | |
1161 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
1162 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 1163 | |
949cf20f KS |
1164 | text_left = window_box_left (w, TEXT_AREA); |
1165 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
1166 | ||
1167 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 1168 | { |
447e9da0 | 1169 | if (!w->pseudo_window_p |
949cf20f | 1170 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 1171 | && !WINDOW_RIGHTMOST_P (w) |
9173a8fb CY |
1172 | && (eabs (x - right_x) < grabbable_width)) |
1173 | return ON_VERTICAL_BORDER; | |
fbad6f9a | 1174 | } |
9173a8fb CY |
1175 | /* Need to say "x > right_x" rather than >=, since on character |
1176 | terminals, the vertical line's x coordinate is right_x. */ | |
1177 | else if (!w->pseudo_window_p | |
1178 | && !WINDOW_RIGHTMOST_P (w) | |
1179 | && x > right_x - ux) | |
1180 | return ON_VERTICAL_BORDER; | |
1181 | ||
1182 | if (x < text_left) | |
949cf20f KS |
1183 | { |
1184 | if (lmargin_width > 0 | |
1185 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1186 | ? (x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) |
1187 | : (x < left_x + lmargin_width))) | |
1188 | return ON_LEFT_MARGIN; | |
1189 | ||
949cf20f KS |
1190 | return ON_LEFT_FRINGE; |
1191 | } | |
1192 | ||
9173a8fb | 1193 | if (x >= text_right) |
949cf20f KS |
1194 | { |
1195 | if (rmargin_width > 0 | |
1196 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1197 | ? (x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) |
1198 | : (x >= right_x - rmargin_width))) | |
1199 | return ON_RIGHT_MARGIN; | |
1200 | ||
949cf20f KS |
1201 | return ON_RIGHT_FRINGE; |
1202 | } | |
1203 | ||
1204 | /* Everything special ruled out - must be on text area */ | |
949cf20f | 1205 | return ON_TEXT; |
d5783c40 JB |
1206 | } |
1207 | ||
9173a8fb CY |
1208 | /* Take X is the frame-relative pixel x-coordinate, and return the |
1209 | x-coordinate relative to part PART of window W. */ | |
1210 | int | |
1211 | window_relative_x_coord (struct window *w, enum window_part part, int x) | |
1212 | { | |
1213 | int left_x = (w->pseudo_window_p) ? 0 : WINDOW_BOX_LEFT_EDGE_X (w); | |
1214 | ||
1215 | switch (part) | |
1216 | { | |
1217 | case ON_TEXT: | |
1218 | return x - window_box_left (w, TEXT_AREA); | |
1219 | ||
1220 | case ON_LEFT_FRINGE: | |
1221 | return x - left_x; | |
1222 | ||
1223 | case ON_RIGHT_FRINGE: | |
1224 | return x - left_x - WINDOW_LEFT_FRINGE_WIDTH (w); | |
1225 | ||
1226 | case ON_LEFT_MARGIN: | |
1227 | return (x - left_x | |
1228 | - ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1229 | ? WINDOW_LEFT_FRINGE_WIDTH (w) : 0)); | |
1230 | ||
1231 | case ON_RIGHT_MARGIN: | |
1232 | return (x + 1 | |
1233 | - ((w->pseudo_window_p) | |
1234 | ? WINDOW_TOTAL_WIDTH (w) | |
1235 | : WINDOW_BOX_RIGHT_EDGE_X (w)) | |
1236 | + window_box_width (w, RIGHT_MARGIN_AREA) | |
1237 | + ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1238 | ? WINDOW_RIGHT_FRINGE_WIDTH (w) : 0)); | |
1239 | } | |
1240 | ||
1241 | /* ON_SCROLL_BAR, ON_NOTHING, and ON_VERTICAL_BORDER: */ | |
1242 | return 0; | |
1243 | } | |
1244 | ||
b0228ace | 1245 | |
d5783c40 | 1246 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
1247 | Scoordinates_in_window_p, 2, 2, 0, |
1248 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
52162052 | 1249 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1250 | COORDINATES is a cons of the form (X . Y), X and Y being distances |
1251 | measured in characters from the upper-left corner of the frame. | |
23fe745a | 1252 | \(0 . 0) denotes the character in the upper left corner of the |
fdb82f93 PJ |
1253 | frame. |
1254 | If COORDINATES are in the text portion of WINDOW, | |
1255 | the coordinates relative to the window are returned. | |
1256 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
1257 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
1258 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
1259 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 1260 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
1261 | `vertical-line' is returned. |
1262 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
1263 | or `right-margin' is returned. */) | |
5842a27b | 1264 | (register Lisp_Object coordinates, Lisp_Object window) |
d5783c40 | 1265 | { |
5500c422 GM |
1266 | struct window *w; |
1267 | struct frame *f; | |
d5783c40 | 1268 | int x, y; |
5500c422 | 1269 | Lisp_Object lx, ly; |
d5783c40 | 1270 | |
52162052 | 1271 | w = decode_live_window (window); |
d3d50620 | 1272 | f = XFRAME (w->frame); |
b7826503 | 1273 | CHECK_CONS (coordinates); |
5500c422 GM |
1274 | lx = Fcar (coordinates); |
1275 | ly = Fcdr (coordinates); | |
b7826503 PJ |
1276 | CHECK_NUMBER_OR_FLOAT (lx); |
1277 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
1278 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
1279 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 | 1280 | |
9173a8fb | 1281 | switch (coordinates_in_window (w, x, y)) |
d5783c40 | 1282 | { |
7442878f | 1283 | case ON_NOTHING: |
d5783c40 JB |
1284 | return Qnil; |
1285 | ||
7442878f | 1286 | case ON_TEXT: |
9173a8fb CY |
1287 | /* Convert X and Y to window relative pixel coordinates, and |
1288 | return the canonical char units. */ | |
1289 | x -= window_box_left (w, TEXT_AREA); | |
1290 | y -= WINDOW_TOP_EDGE_Y (w); | |
949cf20f KS |
1291 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
1292 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 1293 | |
7442878f | 1294 | case ON_MODE_LINE: |
d5783c40 | 1295 | return Qmode_line; |
37962e60 | 1296 | |
7442878f | 1297 | case ON_VERTICAL_BORDER: |
e5d77022 | 1298 | return Qvertical_line; |
d5783c40 | 1299 | |
7442878f | 1300 | case ON_HEADER_LINE: |
045dee35 | 1301 | return Qheader_line; |
5500c422 | 1302 | |
7442878f GM |
1303 | case ON_LEFT_FRINGE: |
1304 | return Qleft_fringe; | |
177c0ea7 | 1305 | |
7442878f GM |
1306 | case ON_RIGHT_FRINGE: |
1307 | return Qright_fringe; | |
fbad6f9a | 1308 | |
49b996e7 GM |
1309 | case ON_LEFT_MARGIN: |
1310 | return Qleft_margin; | |
177c0ea7 | 1311 | |
49b996e7 GM |
1312 | case ON_RIGHT_MARGIN: |
1313 | return Qright_margin; | |
1314 | ||
6487f669 RS |
1315 | case ON_SCROLL_BAR: |
1316 | /* Historically we are supposed to return nil in this case. */ | |
1317 | return Qnil; | |
1318 | ||
d5783c40 | 1319 | default: |
1088b922 | 1320 | emacs_abort (); |
d5783c40 JB |
1321 | } |
1322 | } | |
1323 | ||
67492200 GM |
1324 | |
1325 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
1326 | Check if window W contains coordinates specified by USER_DATA which |
1327 | is actually a pointer to a struct check_window_data CW. | |
1328 | ||
1329 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
1330 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 1331 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
1332 | zero from this function to stop iterating over windows. */ |
1333 | ||
1334 | struct check_window_data | |
1335 | { | |
1336 | Lisp_Object *window; | |
9173a8fb | 1337 | int x, y; |
341f3858 | 1338 | enum window_part *part; |
f95464e4 | 1339 | }; |
67492200 GM |
1340 | |
1341 | static int | |
971de7fb | 1342 | check_window_containing (struct window *w, void *user_data) |
67492200 | 1343 | { |
f95464e4 | 1344 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
1345 | enum window_part found; |
1346 | int continue_p = 1; | |
67492200 | 1347 | |
f95464e4 | 1348 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1349 | if (found != ON_NOTHING) |
67492200 | 1350 | { |
341f3858 | 1351 | *cw->part = found; |
f95464e4 | 1352 | XSETWINDOW (*cw->window, w); |
7442878f | 1353 | continue_p = 0; |
67492200 | 1354 | } |
177c0ea7 | 1355 | |
7442878f | 1356 | return continue_p; |
67492200 GM |
1357 | } |
1358 | ||
1359 | ||
5500c422 | 1360 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1361 | return it as a Lisp_Object. |
1362 | ||
1363 | If X, Y is on one of the window's special `window_part' elements, | |
9173a8fb | 1364 | set *PART to the id of that element. |
949cf20f | 1365 | |
341f3858 | 1366 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1367 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1368 | ||
1369 | This function was previously implemented with a loop cycling over | |
1370 | windows with Fnext_window, and starting with the frame's selected | |
1371 | window. It turned out that this doesn't work with an | |
1372 | implementation of next_window using Vwindow_list, because | |
1373 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1374 | tree of F when this function is called asynchronously from | |
1375 | note_mouse_highlight. The original loop didn't terminate in this | |
1376 | case. */ | |
5500c422 | 1377 | |
7ab12479 | 1378 | Lisp_Object |
9173a8fb CY |
1379 | window_from_coordinates (struct frame *f, int x, int y, |
1380 | enum window_part *part, int tool_bar_p) | |
7ab12479 | 1381 | { |
67492200 | 1382 | Lisp_Object window; |
f95464e4 | 1383 | struct check_window_data cw; |
341f3858 KS |
1384 | enum window_part dummy; |
1385 | ||
1386 | if (part == 0) | |
1387 | part = &dummy; | |
5500c422 | 1388 | |
67492200 | 1389 | window = Qnil; |
9173a8fb | 1390 | cw.window = &window, cw.x = x, cw.y = y; cw.part = part; |
f95464e4 | 1391 | foreach_window (f, check_window_containing, &cw); |
177c0ea7 | 1392 | |
67492200 GM |
1393 | /* If not found above, see if it's in the tool bar window, if a tool |
1394 | bar exists. */ | |
1395 | if (NILP (window) | |
1396 | && tool_bar_p | |
e69b0960 DA |
1397 | && WINDOWP (f->tool_bar_window) |
1398 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 | |
1399 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), x, y) | |
7442878f | 1400 | != ON_NOTHING)) |
5500c422 | 1401 | { |
341f3858 | 1402 | *part = ON_TEXT; |
e69b0960 | 1403 | window = f->tool_bar_window; |
5500c422 | 1404 | } |
37962e60 | 1405 | |
67492200 | 1406 | return window; |
7ab12479 JB |
1407 | } |
1408 | ||
ab17c3f2 | 1409 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 | 1410 | doc: /* Return window containing coordinates X and Y on FRAME. |
496e208e | 1411 | FRAME must be a live frame and defaults to the selected one. |
fdb82f93 PJ |
1412 | The top left corner of the frame is considered to be row 0, |
1413 | column 0. */) | |
5842a27b | 1414 | (Lisp_Object x, Lisp_Object y, Lisp_Object frame) |
7ab12479 | 1415 | { |
d9f07150 | 1416 | struct frame *f = decode_live_frame (frame); |
7ab12479 | 1417 | |
5500c422 | 1418 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1419 | CHECK_NUMBER_OR_FLOAT (x); |
1420 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1421 | |
177c0ea7 | 1422 | return window_from_coordinates (f, |
2c77cf3b RS |
1423 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1424 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1425 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1426 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
9173a8fb | 1427 | 0, 0); |
7ab12479 JB |
1428 | } |
1429 | ||
1430 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1431 | doc: /* Return current value of point in WINDOW. |
496e208e | 1432 | WINDOW must be a live window and defaults to the selected one. |
c85322d0 | 1433 | |
5481664a MR |
1434 | For a nonselected window, this is the value point would have if that |
1435 | window were selected. | |
1436 | ||
1437 | Note that, when WINDOW is selected, the value returned is the same as | |
1438 | that returned by `point' for WINDOW's buffer. It would be more strictly | |
1439 | correct to return the `top-level' value of `point', outside of any | |
1440 | `save-excursion' forms. But that is hard to define. */) | |
5842a27b | 1441 | (Lisp_Object window) |
7ab12479 | 1442 | { |
52162052 | 1443 | register struct window *w = decode_live_window (window); |
7ab12479 | 1444 | |
5481664a MR |
1445 | if (w == XWINDOW (selected_window)) |
1446 | return make_number (BUF_PT (XBUFFER (w->buffer))); | |
1447 | else | |
1448 | return Fmarker_position (w->pointm); | |
7ab12479 JB |
1449 | } |
1450 | ||
1451 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1452 | doc: /* Return position at which display currently starts in WINDOW. |
496e208e | 1453 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 1454 | This is updated by redisplay or by calling `set-window-start'. */) |
5842a27b | 1455 | (Lisp_Object window) |
7ab12479 | 1456 | { |
52162052 | 1457 | return Fmarker_position (decode_live_window (window)->start); |
7ab12479 JB |
1458 | } |
1459 | ||
8646118f RS |
1460 | /* This is text temporarily removed from the doc string below. |
1461 | ||
fdb82f93 PJ |
1462 | This function returns nil if the position is not currently known. |
1463 | That happens when redisplay is preempted and doesn't finish. | |
1464 | If in that case you want to compute where the end of the window would | |
1465 | have been if redisplay had finished, do this: | |
1466 | (save-excursion | |
1467 | (goto-char (window-start window)) | |
1468 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1469 | (point))") */ |
1470 | ||
478292ed | 1471 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1472 | doc: /* Return position at which display currently ends in WINDOW. |
496e208e | 1473 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1474 | This is updated by redisplay, when it runs to completion. |
1475 | Simply changing the buffer text or setting `window-start' | |
1476 | does not update this value. | |
87e68db4 | 1477 | Return nil if there is no recorded value. (This can happen if the |
a0a37a6f | 1478 | last redisplay of WINDOW was preempted, and did not finish.) |
fdb82f93 PJ |
1479 | If UPDATE is non-nil, compute the up-to-date position |
1480 | if it isn't already recorded. */) | |
5842a27b | 1481 | (Lisp_Object window, Lisp_Object update) |
7ab12479 JB |
1482 | { |
1483 | Lisp_Object value; | |
52162052 | 1484 | struct window *w = decode_live_window (window); |
5a41ab94 | 1485 | Lisp_Object buf; |
31790df3 | 1486 | struct buffer *b; |
5a41ab94 | 1487 | |
d3d50620 | 1488 | buf = w->buffer; |
b7826503 | 1489 | CHECK_BUFFER (buf); |
b3a10345 | 1490 | b = XBUFFER (buf); |
5a41ab94 | 1491 | |
8646118f | 1492 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1493 | /* If we don't know the end position, return nil. |
1494 | The user can compute it with vertical-motion if he wants to. | |
1495 | It would be nicer to do it automatically, | |
1496 | but that's so slow that it would probably bother people. */ | |
d3d50620 | 1497 | if (NILP (w->window_end_valid)) |
7250968e | 1498 | return Qnil; |
8646118f | 1499 | #endif |
7250968e | 1500 | |
478292ed | 1501 | if (! NILP (update) |
dca778d5 | 1502 | && (windows_or_buffers_changed || NILP (w->window_end_valid)) |
41791a20 | 1503 | && !noninteractive) |
478292ed | 1504 | { |
cbc099e5 | 1505 | struct text_pos startp; |
4c1acb95 | 1506 | ptrdiff_t charpos = marker_position (w->start); |
cbc099e5 | 1507 | struct it it; |
b3a10345 | 1508 | struct buffer *old_buffer = NULL; |
57b3e30b | 1509 | void *itdata = NULL; |
b3a10345 KS |
1510 | |
1511 | /* Cannot use Fvertical_motion because that function doesn't | |
1512 | cope with variable-height lines. */ | |
1513 | if (b != current_buffer) | |
1514 | { | |
1515 | old_buffer = current_buffer; | |
1516 | set_buffer_internal (b); | |
1517 | } | |
2d6d9df0 GM |
1518 | |
1519 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1520 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1521 | `-l' containing a call to `rmail' with subsequent other |
1522 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1523 | rmail had already narrowed the buffer. */ |
4c1acb95 | 1524 | if (charpos < BEGV) |
cbc099e5 | 1525 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
4c1acb95 | 1526 | else if (charpos > ZV) |
cbc099e5 | 1527 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1528 | else |
d3d50620 | 1529 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
cbc099e5 | 1530 | |
57b3e30b | 1531 | itdata = bidi_shelve_cache (); |
cbc099e5 GM |
1532 | start_display (&it, w, startp); |
1533 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1534 | if (it.current_y < it.last_visible_y) |
1535 | move_it_past_eol (&it); | |
cbc099e5 | 1536 | value = make_number (IT_CHARPOS (it)); |
35928349 | 1537 | bidi_unshelve_cache (itdata, 0); |
177c0ea7 | 1538 | |
99593a9d GM |
1539 | if (old_buffer) |
1540 | set_buffer_internal (old_buffer); | |
478292ed RS |
1541 | } |
1542 | else | |
d3d50620 | 1543 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1544 | |
1545 | return value; | |
1546 | } | |
1547 | ||
a7ca3326 | 1548 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, |
a0a37a6f | 1549 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
52162052 | 1550 | WINDOW must be a live window and defaults to the selected one. |
a0a37a6f | 1551 | Return POS. */) |
5842a27b | 1552 | (Lisp_Object window, Lisp_Object pos) |
7ab12479 | 1553 | { |
52162052 | 1554 | register struct window *w = decode_live_window (window); |
7ab12479 | 1555 | |
b7826503 | 1556 | CHECK_NUMBER_COERCE_MARKER (pos); |
799417bd | 1557 | |
5481664a MR |
1558 | if (w == XWINDOW (selected_window)) |
1559 | { | |
1560 | if (XBUFFER (w->buffer) == current_buffer) | |
1561 | Fgoto_char (pos); | |
1562 | else | |
1563 | { | |
1564 | struct buffer *old_buffer = current_buffer; | |
1565 | ||
1566 | set_buffer_internal (XBUFFER (w->buffer)); | |
1567 | Fgoto_char (pos); | |
1568 | set_buffer_internal (old_buffer); | |
1569 | } | |
1570 | } | |
1571 | else | |
1572 | { | |
1573 | set_marker_restricted (w->pointm, pos, w->buffer); | |
1574 | /* We have to make sure that redisplay updates the window to show | |
1575 | the new value of point. */ | |
1576 | ++windows_or_buffers_changed; | |
1577 | } | |
177c0ea7 | 1578 | |
7ab12479 JB |
1579 | return pos; |
1580 | } | |
1581 | ||
1582 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1583 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
52162052 MR |
1584 | WINDOW must be a live window and defaults to the selected one. Return |
1585 | POS. Optional third arg NOFORCE non-nil inhibits next redisplay from | |
d653c8cc | 1586 | overriding motion of point in order to display at this exact start. */) |
5842a27b | 1587 | (Lisp_Object window, Lisp_Object pos, Lisp_Object noforce) |
7ab12479 | 1588 | { |
52162052 | 1589 | register struct window *w = decode_live_window (window); |
7ab12479 | 1590 | |
b7826503 | 1591 | CHECK_NUMBER_COERCE_MARKER (pos); |
d3d50620 | 1592 | set_marker_restricted (w->start, pos, w->buffer); |
7ab12479 | 1593 | /* this is not right, but much easier than doing what is right. */ |
c98ff5dd | 1594 | w->start_at_line_beg = 0; |
265a9e55 | 1595 | if (NILP (noforce)) |
c98ff5dd DA |
1596 | w->force_start = 1; |
1597 | w->update_mode_line = 1; | |
80b00b08 DA |
1598 | w->last_modified = 0; |
1599 | w->last_overlay_modified = 0; | |
62c07cc7 JB |
1600 | if (!EQ (window, selected_window)) |
1601 | windows_or_buffers_changed++; | |
ce7fae7d | 1602 | |
7ab12479 JB |
1603 | return pos; |
1604 | } | |
1605 | ||
496e208e MR |
1606 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
1607 | Spos_visible_in_window_p, 0, 3, 0, | |
1608 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. | |
52162052 MR |
1609 | WINDOW must be a live window and defaults to the selected one. |
1610 | ||
1611 | Return nil if that position is scrolled vertically out of view. If a | |
1612 | character is only partially visible, nil is returned, unless the | |
1613 | optional argument PARTIALLY is non-nil. If POS is only out of view | |
1614 | because of horizontal scrolling, return non-nil. If POS is t, it | |
1615 | specifies the position of the last visible glyph in WINDOW. POS | |
1616 | defaults to point in WINDOW; WINDOW defaults to the selected window. | |
496e208e MR |
1617 | |
1618 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
1619 | return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), | |
1620 | where X and Y are the pixel coordinates relative to the top left corner | |
1621 | of the window. The remaining elements are omitted if the character after | |
1622 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
1623 | off-window at the top and bottom of the row, ROWH is the height of the | |
1624 | display row, and VPOS is the row number (0-based) containing POS. */) | |
1625 | (Lisp_Object pos, Lisp_Object window, Lisp_Object partially) | |
1626 | { | |
1627 | register struct window *w; | |
1628 | register EMACS_INT posint; | |
1629 | register struct buffer *buf; | |
1630 | struct text_pos top; | |
1631 | Lisp_Object in_window = Qnil; | |
1632 | int rtop, rbot, rowh, vpos, fully_p = 1; | |
1633 | int x, y; | |
1634 | ||
52162052 | 1635 | w = decode_live_window (window); |
d3d50620 DA |
1636 | buf = XBUFFER (w->buffer); |
1637 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
496e208e MR |
1638 | |
1639 | if (EQ (pos, Qt)) | |
1640 | posint = -1; | |
1641 | else if (!NILP (pos)) | |
1642 | { | |
1643 | CHECK_NUMBER_COERCE_MARKER (pos); | |
1644 | posint = XINT (pos); | |
1645 | } | |
1646 | else if (w == XWINDOW (selected_window)) | |
1647 | posint = PT; | |
1648 | else | |
4c1acb95 | 1649 | posint = marker_position (w->pointm); |
496e208e MR |
1650 | |
1651 | /* If position is above window start or outside buffer boundaries, | |
1652 | or if window start is out of range, position is not visible. */ | |
1653 | if ((EQ (pos, Qt) | |
1654 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
1655 | && CHARPOS (top) >= BUF_BEGV (buf) | |
1656 | && CHARPOS (top) <= BUF_ZV (buf) | |
1657 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) | |
1658 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) | |
1659 | in_window = Qt; | |
1660 | ||
1661 | if (!NILP (in_window) && !NILP (partially)) | |
1662 | { | |
1663 | Lisp_Object part = Qnil; | |
1664 | if (!fully_p) | |
1479c557 | 1665 | part = list4i (rtop, rbot, rowh, vpos); |
496e208e MR |
1666 | in_window = Fcons (make_number (x), |
1667 | Fcons (make_number (y), part)); | |
1668 | } | |
1669 | ||
1670 | return in_window; | |
1671 | } | |
1672 | ||
1673 | DEFUN ("window-line-height", Fwindow_line_height, | |
1674 | Swindow_line_height, 0, 2, 0, | |
1675 | doc: /* Return height in pixels of text line LINE in window WINDOW. | |
52162052 | 1676 | WINDOW must be a live window and defaults to the selected one. |
496e208e MR |
1677 | |
1678 | Return height of current line if LINE is omitted or nil. Return height of | |
1679 | header or mode line if LINE is `header-line' or `mode-line'. | |
1680 | Otherwise, LINE is a text line number starting from 0. A negative number | |
1681 | counts from the end of the window. | |
1682 | ||
1683 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height | |
1684 | in pixels of the visible part of the line, VPOS and YPOS are the | |
1685 | vertical position in lines and pixels of the line, relative to the top | |
1686 | of the first text line, and OFFBOT is the number of off-window pixels at | |
1687 | the bottom of the text line. If there are off-window pixels at the top | |
1688 | of the (first) text line, YPOS is negative. | |
1689 | ||
1690 | Return nil if window display is not up-to-date. In that case, use | |
1691 | `pos-visible-in-window-p' to obtain the information. */) | |
1692 | (Lisp_Object line, Lisp_Object window) | |
1693 | { | |
1694 | register struct window *w; | |
1695 | register struct buffer *b; | |
1696 | struct glyph_row *row, *end_row; | |
d311d28c PE |
1697 | int max_y, crop, i; |
1698 | EMACS_INT n; | |
496e208e | 1699 | |
52162052 | 1700 | w = decode_live_window (window); |
496e208e MR |
1701 | |
1702 | if (noninteractive || w->pseudo_window_p) | |
1703 | return Qnil; | |
1704 | ||
d3d50620 DA |
1705 | CHECK_BUFFER (w->buffer); |
1706 | b = XBUFFER (w->buffer); | |
496e208e MR |
1707 | |
1708 | /* Fail if current matrix is not up-to-date. */ | |
d3d50620 | 1709 | if (NILP (w->window_end_valid) |
496e208e MR |
1710 | || current_buffer->clip_changed |
1711 | || current_buffer->prevent_redisplay_optimizations_p | |
80b00b08 DA |
1712 | || w->last_modified < BUF_MODIFF (b) |
1713 | || w->last_overlay_modified < BUF_OVERLAY_MODIFF (b)) | |
496e208e MR |
1714 | return Qnil; |
1715 | ||
1716 | if (NILP (line)) | |
1717 | { | |
1718 | i = w->cursor.vpos; | |
1719 | if (i < 0 || i >= w->current_matrix->nrows | |
1720 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
1721 | return Qnil; | |
1722 | max_y = window_text_bottom_y (w); | |
1723 | goto found_row; | |
1724 | } | |
1725 | ||
1726 | if (EQ (line, Qheader_line)) | |
1727 | { | |
1728 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) | |
1729 | return Qnil; | |
1730 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
1479c557 | 1731 | return row->enabled_p ? list4i (row->height, 0, 0, 0) : Qnil; |
496e208e MR |
1732 | } |
1733 | ||
1734 | if (EQ (line, Qmode_line)) | |
1735 | { | |
1736 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); | |
89bc0592 | 1737 | return (row->enabled_p ? |
1479c557 PE |
1738 | list4i (row->height, |
1739 | 0, /* not accurate */ | |
1740 | (WINDOW_HEADER_LINE_HEIGHT (w) | |
1741 | + window_text_bottom_y (w)), | |
1742 | 0) | |
89bc0592 | 1743 | : Qnil); |
496e208e MR |
1744 | } |
1745 | ||
1746 | CHECK_NUMBER (line); | |
1747 | n = XINT (line); | |
1748 | ||
1749 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
1750 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
1751 | max_y = window_text_bottom_y (w); | |
1752 | i = 0; | |
1753 | ||
1754 | while ((n < 0 || i < n) | |
1755 | && row <= end_row && row->enabled_p | |
1756 | && row->y + row->height < max_y) | |
1757 | row++, i++; | |
1758 | ||
1759 | if (row > end_row || !row->enabled_p) | |
1760 | return Qnil; | |
1761 | ||
1762 | if (++n < 0) | |
1763 | { | |
1764 | if (-n > i) | |
1765 | return Qnil; | |
1766 | row += n; | |
1767 | i += n; | |
1768 | } | |
1769 | ||
1770 | found_row: | |
1771 | crop = max (0, (row->y + row->height) - max_y); | |
1479c557 | 1772 | return list4i (row->height + min (0, row->y) - crop, i, row->y, crop); |
496e208e | 1773 | } |
d653c8cc | 1774 | |
a7ca3326 | 1775 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, |
d653c8cc MR |
1776 | 0, 1, 0, |
1777 | doc: /* Return non-nil when WINDOW is dedicated to its buffer. | |
12bb3111 | 1778 | More precisely, return the value assigned by the last call of |
7bfac547 MR |
1779 | `set-window-dedicated-p' for WINDOW. Return nil if that function was |
1780 | never called with WINDOW as its argument, or the value set by that | |
52162052 MR |
1781 | function was internally reset since its last call. WINDOW must be a |
1782 | live window and defaults to the selected one. | |
7bfac547 MR |
1783 | |
1784 | When a window is dedicated to its buffer, `display-buffer' will refrain | |
1785 | from displaying another buffer in it. `get-lru-window' and | |
1786 | `get-largest-window' treat dedicated windows specially. | |
1787 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1788 | `kill-buffer' can delete a dedicated window and the containing frame. | |
1789 | ||
1790 | Functions like `set-window-buffer' may change the buffer displayed by a | |
1791 | window, unless that window is "strongly" dedicated to its buffer, that | |
1792 | is the value returned by `window-dedicated-p' is t. */) | |
5842a27b | 1793 | (Lisp_Object window) |
7ab12479 | 1794 | { |
52162052 | 1795 | return decode_live_window (window)->dedicated; |
7ab12479 JB |
1796 | } |
1797 | ||
d207b766 RS |
1798 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1799 | Sset_window_dedicated_p, 2, 2, 0, | |
d653c8cc | 1800 | doc: /* Mark WINDOW as dedicated according to FLAG. |
496e208e MR |
1801 | WINDOW must be a live window and defaults to the selected one. FLAG |
1802 | non-nil means mark WINDOW as dedicated to its buffer. FLAG nil means | |
1803 | mark WINDOW as non-dedicated. Return FLAG. | |
d653c8cc | 1804 | |
7bfac547 MR |
1805 | When a window is dedicated to its buffer, `display-buffer' will refrain |
1806 | from displaying another buffer in it. `get-lru-window' and | |
1807 | `get-largest-window' treat dedicated windows specially. | |
496e208e MR |
1808 | `delete-windows-on', `replace-buffer-in-windows', `quit-window', |
1809 | `quit-restore-window' and `kill-buffer' can delete a dedicated window | |
1810 | and the containing frame. | |
7bfac547 MR |
1811 | |
1812 | As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to | |
1813 | its buffer. Functions like `set-window-buffer' may change the buffer | |
1814 | displayed by a window, unless that window is strongly dedicated to its | |
1815 | buffer. If and when `set-window-buffer' displays another buffer in a | |
496e208e | 1816 | window, it also makes sure that the window is no more dedicated. */) |
5842a27b | 1817 | (Lisp_Object window, Lisp_Object flag) |
7ab12479 | 1818 | { |
e8c17b81 PE |
1819 | wset_dedicated (decode_live_window (window), flag); |
1820 | return flag; | |
7ab12479 JB |
1821 | } |
1822 | ||
496e208e MR |
1823 | DEFUN ("window-prev-buffers", Fwindow_prev_buffers, Swindow_prev_buffers, |
1824 | 0, 1, 0, | |
1825 | doc: /* Return buffers previously shown in WINDOW. | |
1826 | WINDOW must be a live window and defaults to the selected one. | |
1827 | ||
94e0933e CY |
1828 | The return value is a list of elements (BUFFER WINDOW-START POS), |
1829 | where BUFFER is a buffer, WINDOW-START is the start position of the | |
1830 | window for that buffer, and POS is a window-specific point value. */) | |
496e208e MR |
1831 | (Lisp_Object window) |
1832 | { | |
52162052 | 1833 | return decode_live_window (window)->prev_buffers; |
496e208e MR |
1834 | } |
1835 | ||
1836 | DEFUN ("set-window-prev-buffers", Fset_window_prev_buffers, | |
1837 | Sset_window_prev_buffers, 2, 2, 0, | |
1838 | doc: /* Set WINDOW's previous buffers to PREV-BUFFERS. | |
94e0933e | 1839 | WINDOW must be a live window and defaults to the selected one. |
496e208e | 1840 | |
94e0933e CY |
1841 | PREV-BUFFERS should be a list of elements (BUFFER WINDOW-START POS), |
1842 | where BUFFER is a buffer, WINDOW-START is the start position of the | |
1843 | window for that buffer, and POS is a window-specific point value. */) | |
496e208e MR |
1844 | (Lisp_Object window, Lisp_Object prev_buffers) |
1845 | { | |
e8c17b81 PE |
1846 | wset_prev_buffers (decode_live_window (window), prev_buffers); |
1847 | return prev_buffers; | |
496e208e MR |
1848 | } |
1849 | ||
1850 | DEFUN ("window-next-buffers", Fwindow_next_buffers, Swindow_next_buffers, | |
1851 | 0, 1, 0, | |
1852 | doc: /* Return list of buffers recently re-shown in WINDOW. | |
1853 | WINDOW must be a live window and defaults to the selected one. */) | |
1854 | (Lisp_Object window) | |
1855 | { | |
52162052 | 1856 | return decode_live_window (window)->next_buffers; |
496e208e MR |
1857 | } |
1858 | ||
1859 | DEFUN ("set-window-next-buffers", Fset_window_next_buffers, | |
1860 | Sset_window_next_buffers, 2, 2, 0, | |
1861 | doc: /* Set WINDOW's next buffers to NEXT-BUFFERS. | |
94e0933e CY |
1862 | WINDOW must be a live window and defaults to the selected one. |
1863 | NEXT-BUFFERS should be a list of buffers. */) | |
496e208e MR |
1864 | (Lisp_Object window, Lisp_Object next_buffers) |
1865 | { | |
e8c17b81 PE |
1866 | wset_next_buffers (decode_live_window (window), next_buffers); |
1867 | return next_buffers; | |
496e208e | 1868 | } |
d653c8cc | 1869 | |
cfbb2395 JB |
1870 | DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters, |
1871 | 0, 1, 0, | |
d653c8cc | 1872 | doc: /* Return the parameters of WINDOW and their values. |
52162052 MR |
1873 | WINDOW must be a valid window and defaults to the selected one. The |
1874 | return value is a list of elements of the form (PARAMETER . VALUE). */) | |
5842a27b | 1875 | (Lisp_Object window) |
cfbb2395 | 1876 | { |
52162052 | 1877 | return Fcopy_alist (decode_valid_window (window)->window_parameters); |
cfbb2395 JB |
1878 | } |
1879 | ||
1880 | DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter, | |
1881 | 2, 2, 0, | |
d653c8cc | 1882 | doc: /* Return WINDOW's value for PARAMETER. |
a8c729af | 1883 | WINDOW can be any window and defaults to the selected one. */) |
5842a27b | 1884 | (Lisp_Object window, Lisp_Object parameter) |
cfbb2395 | 1885 | { |
927abf37 JB |
1886 | Lisp_Object result; |
1887 | ||
a8c729af | 1888 | result = Fassq (parameter, decode_any_window (window)->window_parameters); |
927abf37 | 1889 | return CDR_SAFE (result); |
cfbb2395 JB |
1890 | } |
1891 | ||
cfbb2395 JB |
1892 | DEFUN ("set-window-parameter", Fset_window_parameter, |
1893 | Sset_window_parameter, 3, 3, 0, | |
d653c8cc | 1894 | doc: /* Set WINDOW's value of PARAMETER to VALUE. |
a8c729af | 1895 | WINDOW can be any window and defaults to the selected one. |
52162052 | 1896 | Return VALUE. */) |
5842a27b | 1897 | (Lisp_Object window, Lisp_Object parameter, Lisp_Object value) |
cfbb2395 | 1898 | { |
a8c729af | 1899 | register struct window *w = decode_any_window (window); |
cfbb2395 JB |
1900 | Lisp_Object old_alist_elt; |
1901 | ||
d3d50620 | 1902 | old_alist_elt = Fassq (parameter, w->window_parameters); |
12bb3111 | 1903 | if (NILP (old_alist_elt)) |
e8c17b81 PE |
1904 | wset_window_parameters |
1905 | (w, Fcons (Fcons (parameter, value), w->window_parameters)); | |
cfbb2395 JB |
1906 | else |
1907 | Fsetcdr (old_alist_elt, value); | |
927abf37 | 1908 | return value; |
cfbb2395 JB |
1909 | } |
1910 | ||
7ab12479 JB |
1911 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, |
1912 | 0, 1, 0, | |
c85322d0 | 1913 | doc: /* Return the display-table that WINDOW is using. |
52162052 | 1914 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 1915 | (Lisp_Object window) |
7ab12479 | 1916 | { |
52162052 | 1917 | return decode_live_window (window)->display_table; |
7ab12479 JB |
1918 | } |
1919 | ||
5500c422 GM |
1920 | /* Get the display table for use on window W. This is either W's |
1921 | display table or W's buffer's display table. Ignore the specified | |
1922 | tables if they are not valid; if no valid table is specified, | |
1923 | return 0. */ | |
7ab12479 | 1924 | |
319315f1 | 1925 | struct Lisp_Char_Table * |
971de7fb | 1926 | window_display_table (struct window *w) |
7ab12479 | 1927 | { |
c756cdbe GM |
1928 | struct Lisp_Char_Table *dp = NULL; |
1929 | ||
d3d50620 DA |
1930 | if (DISP_TABLE_P (w->display_table)) |
1931 | dp = XCHAR_TABLE (w->display_table); | |
1932 | else if (BUFFERP (w->buffer)) | |
c756cdbe | 1933 | { |
d3d50620 | 1934 | struct buffer *b = XBUFFER (w->buffer); |
177c0ea7 | 1935 | |
4b4deea2 TT |
1936 | if (DISP_TABLE_P (BVAR (b, display_table))) |
1937 | dp = XCHAR_TABLE (BVAR (b, display_table)); | |
c756cdbe GM |
1938 | else if (DISP_TABLE_P (Vstandard_display_table)) |
1939 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1940 | } | |
171d003c | 1941 | |
c756cdbe | 1942 | return dp; |
7ab12479 JB |
1943 | } |
1944 | ||
3a2712f9 | 1945 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
52162052 MR |
1946 | doc: /* Set WINDOW's display-table to TABLE. |
1947 | WINDOW must be a live window and defaults to the selected one. */) | |
5842a27b | 1948 | (register Lisp_Object window, Lisp_Object table) |
7ab12479 | 1949 | { |
e8c17b81 PE |
1950 | wset_display_table (decode_live_window (window), table); |
1951 | return table; | |
7ab12479 JB |
1952 | } |
1953 | \f | |
562dd5e9 | 1954 | /* Record info on buffer window W is displaying |
7ab12479 | 1955 | when it is about to cease to display that buffer. */ |
dfcf069d | 1956 | static void |
971de7fb | 1957 | unshow_buffer (register struct window *w) |
7ab12479 | 1958 | { |
12cae7c0 | 1959 | Lisp_Object buf; |
b73ea88e | 1960 | struct buffer *b; |
7ab12479 | 1961 | |
d3d50620 | 1962 | buf = w->buffer; |
b73ea88e | 1963 | b = XBUFFER (buf); |
d3d50620 | 1964 | if (b != XMARKER (w->pointm)->buffer) |
1088b922 | 1965 | emacs_abort (); |
7ab12479 | 1966 | |
573f41ab | 1967 | #if 0 |
7ab12479 | 1968 | if (w == XWINDOW (selected_window) |
d3d50620 | 1969 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) |
7ab12479 JB |
1970 | /* Do this except when the selected window's buffer |
1971 | is being removed from some other window. */ | |
573f41ab RS |
1972 | #endif |
1973 | /* last_window_start records the start position that this buffer | |
1974 | had in the last window to be disconnected from it. | |
1975 | Now that this statement is unconditional, | |
1976 | it is possible for the buffer to be displayed in the | |
1977 | selected window, while last_window_start reflects another | |
1978 | window which was recently showing the same buffer. | |
1979 | Some people might say that might be a good thing. Let's see. */ | |
d3d50620 | 1980 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1981 | |
1982 | /* Point in the selected window's buffer | |
1983 | is actually stored in that buffer, and the window's pointm isn't used. | |
1984 | So don't clobber point in that buffer. */ | |
d3d50620 | 1985 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
c4b6914d MR |
1986 | /* Don't clobber point in current buffer either (this could be |
1987 | useful in connection with bug#12208). | |
1988 | && XBUFFER (buf) != current_buffer */ | |
719eaeb1 | 1989 | /* This line helps to fix Horsley's testbug.el bug. */ |
4b4deea2 TT |
1990 | && !(WINDOWP (BVAR (b, last_selected_window)) |
1991 | && w != XWINDOW (BVAR (b, last_selected_window)) | |
d3d50620 | 1992 | && EQ (buf, XWINDOW (BVAR (b, last_selected_window))->buffer))) |
b73ea88e RS |
1993 | temp_set_point_both (b, |
1994 | clip_to_bounds (BUF_BEGV (b), | |
4c1acb95 | 1995 | marker_position (w->pointm), |
b73ea88e RS |
1996 | BUF_ZV (b)), |
1997 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
d3d50620 | 1998 | marker_byte_position (w->pointm), |
b73ea88e | 1999 | BUF_ZV_BYTE (b))); |
177c0ea7 | 2000 | |
4b4deea2 TT |
2001 | if (WINDOWP (BVAR (b, last_selected_window)) |
2002 | && w == XWINDOW (BVAR (b, last_selected_window))) | |
39eb03f1 | 2003 | bset_last_selected_window (b, Qnil); |
7ab12479 JB |
2004 | } |
2005 | ||
1a13852e MR |
2006 | /* Put NEW into the window structure in place of OLD. SETFLAG zero |
2007 | means change window structure only. Otherwise store geometry and | |
2008 | other settings as well. */ | |
dfcf069d | 2009 | static void |
1a13852e | 2010 | replace_window (Lisp_Object old, Lisp_Object new, int setflag) |
7ab12479 JB |
2011 | { |
2012 | register Lisp_Object tem; | |
1a13852e | 2013 | register struct window *o = XWINDOW (old), *n = XWINDOW (new); |
7ab12479 | 2014 | |
1a13852e MR |
2015 | /* If OLD is its frame's root window, then NEW is the new |
2016 | root window for that frame. */ | |
d3d50620 | 2017 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
f00af5b1 | 2018 | fset_root_window (XFRAME (o->frame), new); |
077288cf DA |
2019 | |
2020 | if (setflag) | |
2021 | { | |
e8c17b81 PE |
2022 | wset_left_col (n, o->left_col); |
2023 | wset_top_line (n, o->top_line); | |
2024 | wset_total_cols (n, o->total_cols); | |
2025 | wset_total_lines (n, o->total_lines); | |
2026 | wset_normal_cols (n, o->normal_cols); | |
2027 | wset_normal_cols (o, make_float (1.0)); | |
2028 | wset_normal_lines (n, o->normal_lines); | |
2029 | wset_normal_lines (o, make_float (1.0)); | |
1a13852e MR |
2030 | n->desired_matrix = n->current_matrix = 0; |
2031 | n->vscroll = 0; | |
2032 | memset (&n->cursor, 0, sizeof (n->cursor)); | |
2033 | memset (&n->last_cursor, 0, sizeof (n->last_cursor)); | |
2034 | memset (&n->phys_cursor, 0, sizeof (n->phys_cursor)); | |
2035 | n->phys_cursor_type = -1; | |
2036 | n->phys_cursor_width = -1; | |
2037 | n->must_be_updated_p = 0; | |
2038 | n->pseudo_window_p = 0; | |
e8c17b81 PE |
2039 | wset_window_end_vpos (n, make_number (0)); |
2040 | wset_window_end_pos (n, make_number (0)); | |
2041 | wset_window_end_valid (n, Qnil); | |
1a13852e | 2042 | n->frozen_window_start_p = 0; |
1a13852e MR |
2043 | } |
2044 | ||
d3d50620 | 2045 | tem = o->next; |
e8c17b81 | 2046 | wset_next (n, tem); |
265a9e55 | 2047 | if (!NILP (tem)) |
e8c17b81 | 2048 | wset_prev (XWINDOW (tem), new); |
7ab12479 | 2049 | |
d3d50620 | 2050 | tem = o->prev; |
e8c17b81 | 2051 | wset_prev (n, tem); |
265a9e55 | 2052 | if (!NILP (tem)) |
e8c17b81 | 2053 | wset_next (XWINDOW (tem), new); |
7ab12479 | 2054 | |
d3d50620 | 2055 | tem = o->parent; |
e8c17b81 | 2056 | wset_parent (n, tem); |
265a9e55 | 2057 | if (!NILP (tem)) |
7ab12479 | 2058 | { |
d3d50620 | 2059 | if (EQ (XWINDOW (tem)->vchild, old)) |
e8c17b81 | 2060 | wset_vchild (XWINDOW (tem), new); |
d3d50620 | 2061 | if (EQ (XWINDOW (tem)->hchild, old)) |
e8c17b81 | 2062 | wset_hchild (XWINDOW (tem), new); |
7ab12479 | 2063 | } |
1a13852e MR |
2064 | } |
2065 | ||
2066 | /* If window WINDOW and its parent window are iso-combined, merge | |
2067 | WINDOW's children into those of its parent window and mark WINDOW as | |
2068 | deleted. */ | |
2069 | ||
2070 | static void | |
2071 | recombine_windows (Lisp_Object window) | |
2072 | { | |
2073 | struct window *w, *p, *c; | |
2074 | Lisp_Object parent, child; | |
2075 | int horflag; | |
2076 | ||
2077 | w = XWINDOW (window); | |
d3d50620 DA |
2078 | parent = w->parent; |
2079 | if (!NILP (parent) && NILP (w->combination_limit)) | |
1a13852e MR |
2080 | { |
2081 | p = XWINDOW (parent); | |
d3d50620 DA |
2082 | if (((!NILP (p->vchild) && !NILP (w->vchild)) |
2083 | || (!NILP (p->hchild) && !NILP (w->hchild)))) | |
1a13852e MR |
2084 | /* WINDOW and PARENT are both either a vertical or a horizontal |
2085 | combination. */ | |
2086 | { | |
d3d50620 DA |
2087 | horflag = NILP (w->vchild); |
2088 | child = horflag ? w->hchild : w->vchild; | |
1a13852e MR |
2089 | c = XWINDOW (child); |
2090 | ||
2091 | /* Splice WINDOW's children into its parent's children and | |
2092 | assign new normal sizes. */ | |
d3d50620 | 2093 | if (NILP (w->prev)) |
1a13852e | 2094 | if (horflag) |
e8c17b81 | 2095 | wset_hchild (p, child); |
1a13852e | 2096 | else |
e8c17b81 | 2097 | wset_vchild (p, child); |
1a13852e MR |
2098 | else |
2099 | { | |
e8c17b81 PE |
2100 | wset_prev (c, w->prev); |
2101 | wset_next (XWINDOW (w->prev), child); | |
1a13852e MR |
2102 | } |
2103 | ||
2104 | while (c) | |
2105 | { | |
e8c17b81 | 2106 | wset_parent (c, parent); |
1a13852e MR |
2107 | |
2108 | if (horflag) | |
e8c17b81 PE |
2109 | wset_normal_cols (c, |
2110 | make_float (XFLOATINT (c->total_cols) | |
2111 | / XFLOATINT (p->total_cols))); | |
1a13852e | 2112 | else |
e8c17b81 PE |
2113 | wset_normal_lines (c, |
2114 | make_float (XFLOATINT (c->total_lines) | |
2115 | / XFLOATINT (p->total_lines))); | |
1a13852e | 2116 | |
d3d50620 | 2117 | if (NILP (c->next)) |
1a13852e | 2118 | { |
d3d50620 | 2119 | if (!NILP (w->next)) |
1a13852e | 2120 | { |
e8c17b81 PE |
2121 | wset_next (c, w->next); |
2122 | wset_prev (XWINDOW (c->next), child); | |
1a13852e MR |
2123 | } |
2124 | ||
2125 | c = 0; | |
2126 | } | |
2127 | else | |
2128 | { | |
d3d50620 | 2129 | child = c->next; |
1a13852e MR |
2130 | c = XWINDOW (child); |
2131 | } | |
2132 | } | |
7ab12479 | 2133 | |
1a13852e | 2134 | /* WINDOW can be deleted now. */ |
e8c17b81 PE |
2135 | wset_vchild (w, Qnil); |
2136 | wset_hchild (w, Qnil); | |
1a13852e MR |
2137 | } |
2138 | } | |
7ab12479 | 2139 | } |
6198ccd0 MR |
2140 | |
2141 | /* If WINDOW can be deleted, delete it. */ | |
4475bec4 | 2142 | static void |
6198ccd0 MR |
2143 | delete_deletable_window (Lisp_Object window) |
2144 | { | |
2145 | if (!NILP (call1 (Qwindow_deletable_p, window))) | |
2146 | call1 (Qdelete_window, window); | |
2147 | } | |
1a13852e | 2148 | \f |
67492200 GM |
2149 | /*********************************************************************** |
2150 | Window List | |
2151 | ***********************************************************************/ | |
2152 | ||
f95464e4 GM |
2153 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
2154 | pointer. This is a callback function for foreach_window, used in | |
496e208e | 2155 | the window_list function. */ |
67492200 GM |
2156 | |
2157 | static int | |
971de7fb | 2158 | add_window_to_list (struct window *w, void *user_data) |
67492200 | 2159 | { |
f95464e4 | 2160 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
2161 | Lisp_Object window; |
2162 | XSETWINDOW (window, w); | |
212116d6 | 2163 | *list = Fcons (window, *list); |
67492200 GM |
2164 | return 1; |
2165 | } | |
2166 | ||
2167 | ||
2168 | /* Return a list of all windows, for use by next_window. If | |
2169 | Vwindow_list is a list, return that list. Otherwise, build a new | |
2170 | list, cache it in Vwindow_list, and return that. */ | |
2171 | ||
2172 | static Lisp_Object | |
971de7fb | 2173 | window_list (void) |
67492200 GM |
2174 | { |
2175 | if (!CONSP (Vwindow_list)) | |
2176 | { | |
5b04e9f9 | 2177 | Lisp_Object tail, frame; |
212116d6 | 2178 | |
67492200 | 2179 | Vwindow_list = Qnil; |
5b04e9f9 | 2180 | FOR_EACH_FRAME (tail, frame) |
212116d6 GM |
2181 | { |
2182 | Lisp_Object args[2]; | |
2183 | ||
2184 | /* We are visiting windows in canonical order, and add | |
2185 | new windows at the front of args[1], which means we | |
2186 | have to reverse this list at the end. */ | |
2187 | args[1] = Qnil; | |
5b04e9f9 | 2188 | foreach_window (XFRAME (frame), add_window_to_list, &args[1]); |
212116d6 GM |
2189 | args[0] = Vwindow_list; |
2190 | args[1] = Fnreverse (args[1]); | |
2191 | Vwindow_list = Fnconc (2, args); | |
2192 | } | |
67492200 | 2193 | } |
177c0ea7 | 2194 | |
67492200 GM |
2195 | return Vwindow_list; |
2196 | } | |
2197 | ||
2198 | ||
118ea242 GM |
2199 | /* Value is non-zero if WINDOW satisfies the constraints given by |
2200 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 2201 | |
118ea242 GM |
2202 | MINIBUF t means WINDOW may be minibuffer windows. |
2203 | `lambda' means WINDOW may not be a minibuffer window. | |
2204 | a window means a specific minibuffer window | |
67492200 | 2205 | |
118ea242 GM |
2206 | ALL_FRAMES t means search all frames, |
2207 | nil means search just current frame, | |
aa248733 MS |
2208 | `visible' means search just visible frames on the |
2209 | current terminal, | |
2210 | 0 means search visible and iconified frames on the | |
2211 | current terminal, | |
118ea242 GM |
2212 | a window means search the frame that window belongs to, |
2213 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
2214 | |
2215 | static int | |
971de7fb | 2216 | candidate_window_p (Lisp_Object window, Lisp_Object owindow, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 GM |
2217 | { |
2218 | struct window *w = XWINDOW (window); | |
d3d50620 | 2219 | struct frame *f = XFRAME (w->frame); |
67492200 GM |
2220 | int candidate_p = 1; |
2221 | ||
d3d50620 | 2222 | if (!BUFFERP (w->buffer)) |
67492200 GM |
2223 | candidate_p = 0; |
2224 | else if (MINI_WINDOW_P (w) | |
2225 | && (EQ (minibuf, Qlambda) | |
2226 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
2227 | { | |
2228 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
2229 | If it is a window, consider only that one. */ | |
2230 | candidate_p = 0; | |
2231 | } | |
118ea242 GM |
2232 | else if (EQ (all_frames, Qt)) |
2233 | candidate_p = 1; | |
67492200 | 2234 | else if (NILP (all_frames)) |
118ea242 | 2235 | { |
a54e2c05 | 2236 | eassert (WINDOWP (owindow)); |
d3d50620 | 2237 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); |
118ea242 | 2238 | } |
67492200 GM |
2239 | else if (EQ (all_frames, Qvisible)) |
2240 | { | |
2241 | FRAME_SAMPLE_VISIBILITY (f); | |
de509a60 | 2242 | candidate_p = FRAME_VISIBLE_P (f) |
d3d50620 | 2243 | && (FRAME_TERMINAL (XFRAME (w->frame)) |
de509a60 SM |
2244 | == FRAME_TERMINAL (XFRAME (selected_frame))); |
2245 | ||
67492200 GM |
2246 | } |
2247 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
2248 | { | |
2249 | FRAME_SAMPLE_VISIBILITY (f); | |
ca2d5566 SM |
2250 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
2251 | #ifdef HAVE_X_WINDOWS | |
2252 | /* Yuck!! If we've just created the frame and the | |
2253 | window-manager requested the user to place it | |
2254 | manually, the window may still not be considered | |
2255 | `visible'. I'd argue it should be at least | |
2256 | something like `iconified', but don't know how to do | |
2257 | that yet. --Stef */ | |
2258 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
2259 | && !f->output_data.x->has_been_visible) | |
2260 | #endif | |
de509a60 | 2261 | ) |
d3d50620 | 2262 | && (FRAME_TERMINAL (XFRAME (w->frame)) |
de509a60 | 2263 | == FRAME_TERMINAL (XFRAME (selected_frame))); |
67492200 | 2264 | } |
67492200 GM |
2265 | else if (WINDOWP (all_frames)) |
2266 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
d3d50620 DA |
2267 | || EQ (XWINDOW (all_frames)->frame, w->frame) |
2268 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 | 2269 | else if (FRAMEP (all_frames)) |
d3d50620 | 2270 | candidate_p = EQ (all_frames, w->frame); |
67492200 GM |
2271 | |
2272 | return candidate_p; | |
2273 | } | |
2274 | ||
2275 | ||
2276 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
aa248733 MS |
2277 | Fwindow_list. See candidate_window_p for the meaning of WINDOW, |
2278 | MINIBUF, and ALL_FRAMES. */ | |
67492200 GM |
2279 | |
2280 | static void | |
971de7fb | 2281 | decode_next_window_args (Lisp_Object *window, Lisp_Object *minibuf, Lisp_Object *all_frames) |
67492200 | 2282 | { |
b9e9df47 | 2283 | struct window *w = decode_live_window (*window); |
177c0ea7 | 2284 | |
b6a9e8b1 | 2285 | XSETWINDOW (*window, w); |
67492200 GM |
2286 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
2287 | does. */ | |
2288 | if (NILP (*minibuf)) | |
2289 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
2290 | else if (!EQ (*minibuf, Qt)) | |
2291 | *minibuf = Qlambda; | |
177c0ea7 | 2292 | |
67492200 GM |
2293 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
2294 | => count none of them, or a specific minibuffer window (the | |
2295 | active one) to count. */ | |
2296 | ||
2297 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
2298 | if (NILP (*all_frames)) | |
f00af5b1 | 2299 | *all_frames |
3a45383a | 2300 | = (!EQ (*minibuf, Qlambda) |
b9e9df47 | 2301 | ? FRAME_MINIBUF_WINDOW (XFRAME (w->frame)) |
3a45383a | 2302 | : Qnil); |
67492200 GM |
2303 | else if (EQ (*all_frames, Qvisible)) |
2304 | ; | |
0f8fe9a2 | 2305 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
2306 | ; |
2307 | else if (FRAMEP (*all_frames)) | |
2308 | ; | |
2309 | else if (!EQ (*all_frames, Qt)) | |
2310 | *all_frames = Qnil; | |
67492200 GM |
2311 | } |
2312 | ||
2313 | ||
ab6d1131 | 2314 | /* Return the next or previous window of WINDOW in cyclic ordering |
67492200 GM |
2315 | of windows. NEXT_P non-zero means return the next window. See the |
2316 | documentation string of next-window for the meaning of MINIBUF and | |
2317 | ALL_FRAMES. */ | |
2318 | ||
2319 | static Lisp_Object | |
971de7fb | 2320 | next_window (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames, int next_p) |
67492200 GM |
2321 | { |
2322 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 2323 | |
67492200 GM |
2324 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
2325 | return the first window on the frame. */ | |
2326 | if (FRAMEP (all_frames) | |
d3d50620 | 2327 | && !EQ (all_frames, XWINDOW (window)->frame)) |
67492200 | 2328 | return Fframe_first_window (all_frames); |
177c0ea7 | 2329 | |
212116d6 | 2330 | if (next_p) |
67492200 GM |
2331 | { |
2332 | Lisp_Object list; | |
177c0ea7 | 2333 | |
67492200 GM |
2334 | /* Find WINDOW in the list of all windows. */ |
2335 | list = Fmemq (window, window_list ()); | |
2336 | ||
2337 | /* Scan forward from WINDOW to the end of the window list. */ | |
2338 | if (CONSP (list)) | |
2339 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 2340 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2341 | break; |
2342 | ||
2343 | /* Scan from the start of the window list up to WINDOW. */ | |
2344 | if (!CONSP (list)) | |
2345 | for (list = Vwindow_list; | |
2346 | CONSP (list) && !EQ (XCAR (list), window); | |
2347 | list = XCDR (list)) | |
118ea242 | 2348 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2349 | break; |
2350 | ||
2351 | if (CONSP (list)) | |
2352 | window = XCAR (list); | |
2353 | } | |
2354 | else | |
2355 | { | |
2356 | Lisp_Object candidate, list; | |
177c0ea7 | 2357 | |
67492200 GM |
2358 | /* Scan through the list of windows for candidates. If there are |
2359 | candidate windows in front of WINDOW, the last one of these | |
2360 | is the one we want. If there are candidates following WINDOW | |
2361 | in the list, again the last one of these is the one we want. */ | |
2362 | candidate = Qnil; | |
2363 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
2364 | { | |
2365 | if (EQ (XCAR (list), window)) | |
2366 | { | |
2367 | if (WINDOWP (candidate)) | |
2368 | break; | |
2369 | } | |
118ea242 GM |
2370 | else if (candidate_window_p (XCAR (list), window, minibuf, |
2371 | all_frames)) | |
67492200 GM |
2372 | candidate = XCAR (list); |
2373 | } | |
2374 | ||
2375 | if (WINDOWP (candidate)) | |
2376 | window = candidate; | |
2377 | } | |
2378 | ||
2379 | return window; | |
2380 | } | |
7ab12479 | 2381 | |
7ab12479 | 2382 | |
a7ca3326 | 2383 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
a9b9b7f5 | 2384 | doc: /* Return live window after WINDOW in the cyclic ordering of windows. |
87e68db4 | 2385 | WINDOW must be a live window and defaults to the selected one. The |
9397e56f MR |
2386 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to |
2387 | consider. | |
2388 | ||
2389 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2390 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2391 | even if the minibuffer is not active. Any other value means do not | |
2392 | consider the minibuffer window even if the minibuffer is active. | |
2393 | ||
2394 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2395 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2396 | minibuffer counts, consider all windows on all frames that share that | |
2397 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2398 | meanings: | |
2399 | ||
2400 | - t means consider all windows on all existing frames. | |
2401 | ||
2402 | - `visible' means consider all windows on all visible frames. | |
2403 | ||
2404 | - 0 (the number zero) means consider all windows on all visible and | |
2405 | iconified frames. | |
2406 | ||
2407 | - A frame means consider all windows on that frame only. | |
ab6d1131 | 2408 | |
ab6d1131 | 2409 | Anything else means consider all windows on WINDOW's frame and no |
9397e56f | 2410 | others. |
fdb82f93 PJ |
2411 | |
2412 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
2413 | `next-window' to iterate through the entire cycle of acceptable | |
2414 | windows, eventually ending up back at the window you started with. | |
2415 | `previous-window' traverses the same cycle, in the reverse order. */) | |
5842a27b | 2416 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2417 | { |
67492200 | 2418 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
2419 | } |
2420 | ||
67492200 | 2421 | |
26f6279d | 2422 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
a9b9b7f5 | 2423 | doc: /* Return live window before WINDOW in the cyclic ordering of windows. |
9397e56f MR |
2424 | WINDOW must be a live window and defaults to the selected one. The |
2425 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to | |
2426 | consider. | |
2427 | ||
2428 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2429 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2430 | even if the minibuffer is not active. Any other value means do not | |
2431 | consider the minibuffer window even if the minibuffer is active. | |
2432 | ||
2433 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2434 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2435 | minibuffer counts, consider all windows on all frames that share that | |
2436 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2437 | meanings: | |
2438 | ||
2439 | - t means consider all windows on all existing frames. | |
2440 | ||
2441 | - `visible' means consider all windows on all visible frames. | |
2442 | ||
2443 | - 0 (the number zero) means consider all windows on all visible and | |
2444 | iconified frames. | |
2445 | ||
2446 | - A frame means consider all windows on that frame only. | |
2447 | ||
2448 | Anything else means consider all windows on WINDOW's frame and no | |
2449 | others. | |
ab6d1131 MR |
2450 | |
2451 | If you use consistent values for MINIBUF and ALL-FRAMES, you can | |
2452 | use `previous-window' to iterate through the entire cycle of | |
2453 | acceptable windows, eventually ending up back at the window you | |
2454 | started with. `next-window' traverses the same cycle, in the | |
2455 | reverse order. */) | |
5842a27b | 2456 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2457 | { |
67492200 | 2458 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2459 | } |
2460 | ||
67492200 | 2461 | |
ab6d1131 | 2462 | /* Return a list of windows in cyclic ordering. Arguments are like |
cd2904bd GM |
2463 | for `next-window'. */ |
2464 | ||
2465 | static Lisp_Object | |
971de7fb | 2466 | window_list_1 (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 | 2467 | { |
403de3b4 | 2468 | Lisp_Object tail, list, rest; |
67492200 GM |
2469 | |
2470 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2471 | list = Qnil; | |
177c0ea7 | 2472 | |
67492200 | 2473 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2474 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2475 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2476 | |
403de3b4 RS |
2477 | /* Rotate the list to start with WINDOW. */ |
2478 | list = Fnreverse (list); | |
2479 | rest = Fmemq (window, list); | |
2480 | if (!NILP (rest) && !EQ (rest, list)) | |
2481 | { | |
1725a7c9 | 2482 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2483 | ; |
2484 | XSETCDR (tail, Qnil); | |
2485 | list = nconc2 (rest, list); | |
2486 | } | |
2487 | return list; | |
67492200 GM |
2488 | } |
2489 | ||
2490 | ||
abde8f8c MR |
2491 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, |
2492 | doc: /* Return a list of windows on FRAME, starting with WINDOW. | |
2493 | FRAME nil or omitted means use the selected frame. | |
49745b39 | 2494 | WINDOW nil or omitted means use the window selected within FRAME. |
abde8f8c MR |
2495 | MINIBUF t means include the minibuffer window, even if it isn't active. |
2496 | MINIBUF nil or omitted means include the minibuffer window only | |
2497 | if it's active. | |
2498 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2499 | (Lisp_Object frame, Lisp_Object minibuf, Lisp_Object window) | |
2500 | { | |
2501 | if (NILP (window)) | |
e69b0960 | 2502 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
abde8f8c MR |
2503 | CHECK_WINDOW (window); |
2504 | if (NILP (frame)) | |
2505 | frame = selected_frame; | |
2506 | ||
d3d50620 | 2507 | if (!EQ (frame, XWINDOW (window)->frame)) |
abde8f8c MR |
2508 | error ("Window is on a different frame"); |
2509 | ||
2510 | return window_list_1 (window, minibuf, frame); | |
2511 | } | |
2512 | ||
2513 | ||
1a13852e MR |
2514 | DEFUN ("window-list-1", Fwindow_list_1, Swindow_list_1, 0, 3, 0, |
2515 | doc: /* Return a list of all live windows. | |
2516 | WINDOW specifies the first window to list and defaults to the selected | |
2517 | window. | |
2518 | ||
2519 | Optional argument MINIBUF nil or omitted means consider the minibuffer | |
2520 | window only if the minibuffer is active. MINIBUF t means consider the | |
2521 | minibuffer window even if the minibuffer is not active. Any other value | |
2522 | means do not consider the minibuffer window even if the minibuffer is | |
2523 | active. | |
2524 | ||
2525 | Optional argument ALL-FRAMES nil or omitted means consider all windows | |
2526 | on WINDOW's frame, plus the minibuffer window if specified by the | |
2527 | MINIBUF argument. If the minibuffer counts, consider all windows on all | |
2528 | frames that share that minibuffer too. The following non-nil values of | |
2529 | ALL-FRAMES have special meanings: | |
2530 | ||
2531 | - t means consider all windows on all existing frames. | |
2532 | ||
2533 | - `visible' means consider all windows on all visible frames. | |
2534 | ||
2535 | - 0 (the number zero) means consider all windows on all visible and | |
2536 | iconified frames. | |
2537 | ||
2538 | - A frame means consider all windows on that frame only. | |
2539 | ||
2540 | Anything else means consider all windows on WINDOW's frame and no | |
2541 | others. | |
2542 | ||
2543 | If WINDOW is not on the list of windows returned, some other window will | |
8350f087 | 2544 | be listed first but no error is signaled. */) |
1a13852e MR |
2545 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
2546 | { | |
2547 | return window_list_1 (window, minibuf, all_frames); | |
2548 | } | |
7ab12479 JB |
2549 | \f |
2550 | /* Look at all windows, performing an operation specified by TYPE | |
2551 | with argument OBJ. | |
75d8f668 | 2552 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2553 | Qnil, look at just the selected frame; |
89bca612 | 2554 | Qvisible, look at visible frames; |
75d8f668 | 2555 | a frame, just look at windows on that frame. |
85fe3b5e | 2556 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2557 | |
2558 | enum window_loop | |
2559 | { | |
2560 | WINDOW_LOOP_UNUSED, | |
9397e56f MR |
2561 | GET_BUFFER_WINDOW, /* Arg is buffer */ |
2562 | REPLACE_BUFFER_IN_WINDOWS_SAFELY, /* Arg is buffer */ | |
2563 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ | |
3f8ab7bd | 2564 | CHECK_ALL_WINDOWS |
7ab12479 JB |
2565 | }; |
2566 | ||
2567 | static Lisp_Object | |
971de7fb | 2568 | window_loop (enum window_loop type, Lisp_Object obj, int mini, Lisp_Object frames) |
7ab12479 | 2569 | { |
118ea242 | 2570 | Lisp_Object window, windows, best_window, frame_arg; |
9397e56f | 2571 | int frame_best_window_flag = 0; |
118ea242 | 2572 | struct frame *f; |
ffdc852d | 2573 | struct gcpro gcpro1; |
177c0ea7 | 2574 | |
44fa5b1e JB |
2575 | /* If we're only looping through windows on a particular frame, |
2576 | frame points to that frame. If we're looping through windows | |
2577 | on all frames, frame is 0. */ | |
2578 | if (FRAMEP (frames)) | |
118ea242 | 2579 | f = XFRAME (frames); |
44fa5b1e | 2580 | else if (NILP (frames)) |
118ea242 | 2581 | f = SELECTED_FRAME (); |
7ab12479 | 2582 | else |
118ea242 | 2583 | f = NULL; |
177c0ea7 | 2584 | |
118ea242 | 2585 | if (f) |
89bca612 | 2586 | frame_arg = Qlambda; |
0f8fe9a2 | 2587 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2588 | frame_arg = frames; |
89bca612 RS |
2589 | else if (EQ (frames, Qvisible)) |
2590 | frame_arg = frames; | |
118ea242 GM |
2591 | else |
2592 | frame_arg = Qt; | |
7ab12479 | 2593 | |
89bca612 RS |
2594 | /* frame_arg is Qlambda to stick to one frame, |
2595 | Qvisible to consider all visible frames, | |
2596 | or Qt otherwise. */ | |
2597 | ||
7ab12479 | 2598 | /* Pick a window to start with. */ |
017b2bad | 2599 | if (WINDOWP (obj)) |
118ea242 GM |
2600 | window = obj; |
2601 | else if (f) | |
2602 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2603 | else |
118ea242 | 2604 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2605 | |
cd2904bd | 2606 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2607 | GCPRO1 (windows); |
7ab12479 | 2608 | best_window = Qnil; |
118ea242 | 2609 | |
e67a1dea | 2610 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2611 | { |
118ea242 | 2612 | struct window *w; |
177c0ea7 | 2613 | |
118ea242 GM |
2614 | window = XCAR (windows); |
2615 | w = XWINDOW (window); | |
177c0ea7 | 2616 | |
118ea242 GM |
2617 | /* Note that we do not pay attention here to whether the frame |
2618 | is visible, since Fwindow_list skips non-visible frames if | |
2619 | that is desired, under the control of frame_arg. */ | |
2620 | if (!MINI_WINDOW_P (w) | |
9397e56f MR |
2621 | /* For REPLACE_BUFFER_IN_WINDOWS_SAFELY, we must always |
2622 | consider all windows. */ | |
2623 | || type == REPLACE_BUFFER_IN_WINDOWS_SAFELY | |
7ab12479 JB |
2624 | || (mini && minibuf_level > 0)) |
2625 | switch (type) | |
2626 | { | |
2627 | case GET_BUFFER_WINDOW: | |
d3d50620 | 2628 | if (EQ (w->buffer, obj) |
9397e56f MR |
2629 | /* Don't find any minibuffer window except the one that |
2630 | is currently in use. */ | |
2631 | && (MINI_WINDOW_P (w) ? EQ (window, minibuf_window) : 1)) | |
118ea242 | 2632 | { |
9397e56f MR |
2633 | if (EQ (window, selected_window)) |
2634 | /* Preferably return the selected window. */ | |
ca2d5566 | 2635 | RETURN_UNGCPRO (window); |
d3d50620 | 2636 | else if (EQ (XWINDOW (window)->frame, selected_frame) |
9397e56f MR |
2637 | && !frame_best_window_flag) |
2638 | /* Prefer windows on the current frame (but don't | |
2639 | choose another one if we have one already). */ | |
118ea242 | 2640 | { |
9397e56f MR |
2641 | best_window = window; |
2642 | frame_best_window_flag = 1; | |
7ab12479 | 2643 | } |
9397e56f MR |
2644 | else if (NILP (best_window)) |
2645 | best_window = window; | |
7ab12479 JB |
2646 | } |
2647 | break; | |
2648 | ||
9397e56f MR |
2649 | case REPLACE_BUFFER_IN_WINDOWS_SAFELY: |
2650 | /* We could simply check whether the buffer shown by window | |
2651 | is live, and show another buffer in case it isn't. */ | |
d3d50620 | 2652 | if (EQ (w->buffer, obj)) |
7ab12479 | 2653 | { |
9397e56f | 2654 | /* Undedicate WINDOW. */ |
e8c17b81 | 2655 | wset_dedicated (w, Qnil); |
9397e56f MR |
2656 | /* Make WINDOW show the buffer returned by |
2657 | other_buffer_safely, don't run any hooks. */ | |
2658 | set_window_buffer | |
d3d50620 | 2659 | (window, other_buffer_safely (w->buffer), 0, 0); |
9397e56f MR |
2660 | /* If WINDOW is the selected window, make its buffer |
2661 | current. But do so only if the window shows the | |
2662 | current buffer (Bug#6454). */ | |
2663 | if (EQ (window, selected_window) | |
d3d50620 DA |
2664 | && XBUFFER (w->buffer) == current_buffer) |
2665 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2666 | } |
2667 | break; | |
3f8ab7bd | 2668 | |
6b61353c | 2669 | case REDISPLAY_BUFFER_WINDOWS: |
d3d50620 | 2670 | if (EQ (w->buffer, obj)) |
6b61353c KH |
2671 | { |
2672 | mark_window_display_accurate (window, 0); | |
c98ff5dd | 2673 | w->update_mode_line = 1; |
6b61353c KH |
2674 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; |
2675 | ++update_mode_lines; | |
2676 | best_window = window; | |
2677 | } | |
2678 | break; | |
2679 | ||
3f8ab7bd RS |
2680 | /* Check for a window that has a killed buffer. */ |
2681 | case CHECK_ALL_WINDOWS: | |
d3d50620 | 2682 | if (! NILP (w->buffer) |
e578f381 | 2683 | && !BUFFER_LIVE_P (XBUFFER (w->buffer))) |
1088b922 | 2684 | emacs_abort (); |
118ea242 | 2685 | break; |
6bbd7a29 GM |
2686 | |
2687 | case WINDOW_LOOP_UNUSED: | |
2688 | break; | |
7ab12479 | 2689 | } |
7ab12479 | 2690 | } |
7ab12479 | 2691 | |
118ea242 | 2692 | UNGCPRO; |
7ab12479 | 2693 | return best_window; |
37962e60 | 2694 | } |
605be8af | 2695 | |
3f8ab7bd RS |
2696 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2697 | ||
e3b27b31 | 2698 | extern void check_all_windows (void) EXTERNALLY_VISIBLE; |
233a4a2c | 2699 | void |
971de7fb | 2700 | check_all_windows (void) |
3f8ab7bd RS |
2701 | { |
2702 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2703 | } | |
2704 | ||
a7ca3326 | 2705 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 0, 2, 0, |
fec89261 | 2706 | doc: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none. |
496e208e MR |
2707 | BUFFER-OR-NAME may be a buffer or a buffer name and defaults to |
2708 | the current buffer. | |
2709 | ||
2710 | The optional argument ALL-FRAMES specifies the frames to consider: | |
2711 | ||
2712 | - t means consider all windows on all existing frames. | |
2713 | ||
2714 | - `visible' means consider all windows on all visible frames. | |
2715 | ||
2716 | - 0 (the number zero) means consider all windows on all visible | |
2717 | and iconified frames. | |
2718 | ||
2719 | - A frame means consider all windows on that frame only. | |
2720 | ||
2721 | Any other value of ALL-FRAMES means consider all windows on the | |
2722 | selected frame and no others. */) | |
2723 | (Lisp_Object buffer_or_name, Lisp_Object all_frames) | |
7ab12479 | 2724 | { |
fec89261 MR |
2725 | Lisp_Object buffer; |
2726 | ||
2727 | if (NILP (buffer_or_name)) | |
2728 | buffer = Fcurrent_buffer (); | |
2729 | else | |
2730 | buffer = Fget_buffer (buffer_or_name); | |
2731 | ||
017b2bad | 2732 | if (BUFFERP (buffer)) |
496e208e | 2733 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, all_frames); |
7ab12479 JB |
2734 | else |
2735 | return Qnil; | |
2736 | } | |
2737 | ||
4b66faf3 | 2738 | static Lisp_Object |
1a13852e MR |
2739 | resize_root_window (Lisp_Object window, Lisp_Object delta, Lisp_Object horizontal, Lisp_Object ignore) |
2740 | { | |
5386012d | 2741 | return call4 (Qwindow_resize_root_window, window, delta, horizontal, ignore); |
1a13852e MR |
2742 | } |
2743 | ||
2744 | ||
2745 | DEFUN ("delete-other-windows-internal", Fdelete_other_windows_internal, | |
2746 | Sdelete_other_windows_internal, 0, 2, "", | |
2747 | doc: /* Make WINDOW fill its frame. | |
52162052 MR |
2748 | Only the frame WINDOW is on is affected. WINDOW must be a valid window |
2749 | and defaults to the selected one. | |
1a13852e | 2750 | |
be7f5545 MR |
2751 | Optional argument ROOT, if non-nil, must specify an internal window such |
2752 | that WINDOW is in its window subtree. If this is the case, replace ROOT | |
2753 | by WINDOW and leave alone any windows not part of ROOT's subtree. | |
1a13852e MR |
2754 | |
2755 | When WINDOW is live try to reduce display jumps by keeping the text | |
2756 | previously visible in WINDOW in the same place on the frame. Doing this | |
2757 | depends on the value of (window-start WINDOW), so if calling this | |
2758 | function in a program gives strange scrolling, make sure the | |
2759 | window-start value is reasonable when this function is called. */) | |
2760 | (Lisp_Object window, Lisp_Object root) | |
2761 | { | |
2762 | struct window *w, *r, *s; | |
2763 | struct frame *f; | |
46a4ce9e | 2764 | Lisp_Object sibling, pwindow, swindow IF_LINT (= Qnil), delta; |
d311d28c | 2765 | ptrdiff_t startpos IF_LINT (= 0); |
46a4ce9e | 2766 | int top IF_LINT (= 0), new_top, resize_failed; |
1a13852e | 2767 | |
52162052 | 2768 | w = decode_valid_window (window); |
1a13852e | 2769 | XSETWINDOW (window, w); |
d3d50620 | 2770 | f = XFRAME (w->frame); |
1a13852e MR |
2771 | |
2772 | if (NILP (root)) | |
2773 | /* ROOT is the frame's root window. */ | |
2774 | { | |
2775 | root = FRAME_ROOT_WINDOW (f); | |
2776 | r = XWINDOW (root); | |
2777 | } | |
2778 | else | |
2779 | /* ROOT must be an ancestor of WINDOW. */ | |
2780 | { | |
52162052 | 2781 | r = decode_valid_window (root); |
d3d50620 | 2782 | pwindow = XWINDOW (window)->parent; |
1a13852e MR |
2783 | while (!NILP (pwindow)) |
2784 | if (EQ (pwindow, root)) | |
2785 | break; | |
2786 | else | |
d3d50620 | 2787 | pwindow = XWINDOW (pwindow)->parent; |
1a13852e MR |
2788 | if (!EQ (pwindow, root)) |
2789 | error ("Specified root is not an ancestor of specified window"); | |
2790 | } | |
2791 | ||
2792 | if (EQ (window, root)) | |
2793 | /* A noop. */ | |
2794 | return Qnil; | |
2795 | /* I don't understand the "top > 0" part below. If we deal with a | |
2796 | standalone minibuffer it would have been caught by the preceding | |
2797 | test. */ | |
2798 | else if (MINI_WINDOW_P (w)) /* && top > 0) */ | |
2799 | error ("Can't expand minibuffer to full frame"); | |
2800 | ||
d3d50620 | 2801 | if (!NILP (w->buffer)) |
1a13852e | 2802 | { |
d3d50620 | 2803 | startpos = marker_position (w->start); |
1a13852e MR |
2804 | top = WINDOW_TOP_EDGE_LINE (w) |
2805 | - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2806 | /* Make sure WINDOW is the frame's selected window. */ | |
2807 | if (!EQ (window, FRAME_SELECTED_WINDOW (f))) | |
2808 | { | |
d3d50620 | 2809 | if (EQ (selected_frame, w->frame)) |
1a13852e MR |
2810 | Fselect_window (window, Qnil); |
2811 | else | |
f00af5b1 | 2812 | fset_selected_window (f, window); |
1a13852e MR |
2813 | } |
2814 | } | |
2815 | else | |
2816 | { | |
be7f5545 MR |
2817 | /* See if the frame's selected window is a part of the window |
2818 | subtree rooted at WINDOW, by finding all the selected window's | |
2819 | parents and comparing each one with WINDOW. If it isn't we | |
2820 | need a new selected window for this frame. */ | |
1a13852e MR |
2821 | swindow = FRAME_SELECTED_WINDOW (f); |
2822 | while (1) | |
2823 | { | |
2824 | pwindow = swindow; | |
2825 | while (!NILP (pwindow) && !EQ (window, pwindow)) | |
d3d50620 | 2826 | pwindow = XWINDOW (pwindow)->parent; |
1a13852e MR |
2827 | |
2828 | if (EQ (window, pwindow)) | |
2829 | /* If WINDOW is an ancestor of SWINDOW, then SWINDOW is ok | |
2830 | as the new selected window. */ | |
2831 | break; | |
2832 | else | |
2833 | /* Else try the previous window of SWINDOW. */ | |
2834 | swindow = Fprevious_window (swindow, Qlambda, Qnil); | |
2835 | } | |
2836 | ||
2837 | if (!EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
2838 | { | |
d3d50620 | 2839 | if (EQ (selected_frame, w->frame)) |
1a13852e MR |
2840 | Fselect_window (swindow, Qnil); |
2841 | else | |
f00af5b1 | 2842 | fset_selected_window (f, swindow); |
1a13852e MR |
2843 | } |
2844 | } | |
2845 | ||
4d7e6e51 | 2846 | block_input (); |
4c5501e9 EZ |
2847 | if (!FRAME_INITIAL_P (f)) |
2848 | { | |
2849 | Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f); | |
2850 | ||
2851 | /* We are going to free the glyph matrices of WINDOW, and with | |
2852 | that we might lose any information about glyph rows that have | |
2853 | some of their glyphs highlighted in mouse face. (These rows | |
2854 | are marked with a non-zero mouse_face_p flag.) If WINDOW | |
2855 | indeed has some glyphs highlighted in mouse face, signal to | |
2856 | frame's up-to-date hook that mouse highlight was overwritten, | |
2857 | so that it will arrange for redisplaying the highlight. */ | |
2858 | if (EQ (hlinfo->mouse_face_window, window)) | |
2859 | { | |
2860 | hlinfo->mouse_face_beg_row = hlinfo->mouse_face_beg_col = -1; | |
2861 | hlinfo->mouse_face_end_row = hlinfo->mouse_face_end_col = -1; | |
2862 | hlinfo->mouse_face_window = Qnil; | |
2863 | } | |
a6b1c7cc | 2864 | } |
1a13852e MR |
2865 | free_window_matrices (r); |
2866 | ||
2867 | windows_or_buffers_changed++; | |
2868 | Vwindow_list = Qnil; | |
2869 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
46a4ce9e | 2870 | resize_failed = 0; |
1a13852e | 2871 | |
d3d50620 | 2872 | if (NILP (w->buffer)) |
1a13852e | 2873 | { |
be7f5545 | 2874 | /* Resize child windows vertically. */ |
d3d50620 DA |
2875 | XSETINT (delta, XINT (r->total_lines) |
2876 | - XINT (w->total_lines)); | |
e8c17b81 | 2877 | wset_top_line (w, r->top_line); |
1a13852e | 2878 | resize_root_window (window, delta, Qnil, Qnil); |
d615d6d2 MR |
2879 | if (window_resize_check (w, 0)) |
2880 | window_resize_apply (w, 0); | |
1a13852e MR |
2881 | else |
2882 | { | |
2883 | resize_root_window (window, delta, Qnil, Qt); | |
d615d6d2 MR |
2884 | if (window_resize_check (w, 0)) |
2885 | window_resize_apply (w, 0); | |
1a13852e MR |
2886 | else |
2887 | resize_failed = 1; | |
2888 | } | |
2889 | ||
be7f5545 | 2890 | /* Resize child windows horizontally. */ |
1a13852e MR |
2891 | if (!resize_failed) |
2892 | { | |
e8c17b81 | 2893 | wset_left_col (w, r->left_col); |
f00af5b1 PE |
2894 | XSETINT (delta, |
2895 | XINT (r->total_cols) - XINT (w->total_cols)); | |
e8c17b81 | 2896 | wset_left_col (w, r->left_col); |
1a13852e | 2897 | resize_root_window (window, delta, Qt, Qnil); |
d615d6d2 MR |
2898 | if (window_resize_check (w, 1)) |
2899 | window_resize_apply (w, 1); | |
1a13852e MR |
2900 | else |
2901 | { | |
2902 | resize_root_window (window, delta, Qt, Qt); | |
d615d6d2 MR |
2903 | if (window_resize_check (w, 1)) |
2904 | window_resize_apply (w, 1); | |
1a13852e MR |
2905 | else |
2906 | resize_failed = 1; | |
2907 | } | |
2908 | } | |
2909 | ||
2910 | if (resize_failed) | |
2911 | /* Play safe, if we still can ... */ | |
2912 | { | |
2913 | window = swindow; | |
2914 | w = XWINDOW (window); | |
2915 | } | |
2916 | } | |
2917 | ||
2918 | /* Cleanly unlink WINDOW from window-tree. */ | |
d3d50620 | 2919 | if (!NILP (w->prev)) |
1a13852e MR |
2920 | /* Get SIBLING above (on the left of) WINDOW. */ |
2921 | { | |
d3d50620 | 2922 | sibling = w->prev; |
1a13852e | 2923 | s = XWINDOW (sibling); |
e8c17b81 | 2924 | wset_next (s, w->next); |
d3d50620 | 2925 | if (!NILP (s->next)) |
e8c17b81 | 2926 | wset_prev (XWINDOW (s->next), sibling); |
1a13852e MR |
2927 | } |
2928 | else | |
2929 | /* Get SIBLING below (on the right of) WINDOW. */ | |
2930 | { | |
d3d50620 | 2931 | sibling = w->next; |
1a13852e | 2932 | s = XWINDOW (sibling); |
e8c17b81 | 2933 | wset_prev (s, Qnil); |
d3d50620 | 2934 | if (!NILP (XWINDOW (w->parent)->vchild)) |
e8c17b81 | 2935 | wset_vchild (XWINDOW (w->parent), sibling); |
1a13852e | 2936 | else |
e8c17b81 | 2937 | wset_hchild (XWINDOW (w->parent), sibling); |
1a13852e MR |
2938 | } |
2939 | ||
be7f5545 | 2940 | /* Delete ROOT and all child windows of ROOT. */ |
d3d50620 | 2941 | if (!NILP (r->vchild)) |
1a13852e | 2942 | { |
d3d50620 | 2943 | delete_all_child_windows (r->vchild); |
e8c17b81 | 2944 | wset_vchild (r, Qnil); |
1a13852e | 2945 | } |
d3d50620 | 2946 | else if (!NILP (r->hchild)) |
1a13852e | 2947 | { |
d3d50620 | 2948 | delete_all_child_windows (r->hchild); |
e8c17b81 | 2949 | wset_hchild (r, Qnil); |
1a13852e MR |
2950 | } |
2951 | ||
2952 | replace_window (root, window, 1); | |
2953 | ||
1a13852e | 2954 | /* This must become SWINDOW anyway ....... */ |
d3d50620 | 2955 | if (!NILP (w->buffer) && !resize_failed) |
1a13852e MR |
2956 | { |
2957 | /* Try to minimize scrolling, by setting the window start to the | |
2958 | point will cause the text at the old window start to be at the | |
2959 | same place on the frame. But don't try to do this if the | |
2960 | window start is outside the visible portion (as might happen | |
2961 | when the display is not current, due to typeahead). */ | |
2962 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2963 | if (new_top != top | |
d3d50620 DA |
2964 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) |
2965 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) | |
1a13852e MR |
2966 | { |
2967 | struct position pos; | |
2968 | struct buffer *obuf = current_buffer; | |
2969 | ||
d3d50620 | 2970 | Fset_buffer (w->buffer); |
1a13852e MR |
2971 | /* This computation used to temporarily move point, but that |
2972 | can have unwanted side effects due to text properties. */ | |
2973 | pos = *vmotion (startpos, -top, w); | |
2974 | ||
d3d50620 | 2975 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
e8c17b81 | 2976 | wset_window_end_valid (w, Qnil); |
c98ff5dd DA |
2977 | w->start_at_line_beg = (pos.bytepos == BEGV_BYTE |
2978 | || FETCH_BYTE (pos.bytepos - 1) == '\n'); | |
1a13852e MR |
2979 | /* We need to do this, so that the window-scroll-functions |
2980 | get called. */ | |
c98ff5dd | 2981 | w->optional_new_start = 1; |
1a13852e MR |
2982 | |
2983 | set_buffer_internal (obuf); | |
2984 | } | |
2985 | } | |
2986 | ||
2987 | adjust_glyphs (f); | |
4d7e6e51 | 2988 | unblock_input (); |
1a13852e MR |
2989 | |
2990 | run_window_configuration_change_hook (f); | |
2991 | ||
2992 | return Qnil; | |
2993 | } | |
2994 | ||
2995 | ||
9397e56f MR |
2996 | void |
2997 | replace_buffer_in_windows (Lisp_Object buffer) | |
7ab12479 | 2998 | { |
9397e56f | 2999 | call1 (Qreplace_buffer_in_windows, buffer); |
7ab12479 JB |
3000 | } |
3001 | ||
c6afe371 DA |
3002 | /* If BUFFER is shown in a window, safely replace it with some other |
3003 | buffer in all windows of all frames, even those on other keyboards. */ | |
ff58478b RS |
3004 | |
3005 | void | |
9397e56f | 3006 | replace_buffer_in_windows_safely (Lisp_Object buffer) |
ff58478b | 3007 | { |
c6afe371 DA |
3008 | if (buffer_window_count (XBUFFER (buffer))) |
3009 | { | |
3010 | Lisp_Object tail, frame; | |
ff58478b | 3011 | |
c6afe371 DA |
3012 | /* A single call to window_loop won't do the job because it only |
3013 | considers frames on the current keyboard. So loop manually over | |
3014 | frames, and handle each one. */ | |
3015 | FOR_EACH_FRAME (tail, frame) | |
3016 | window_loop (REPLACE_BUFFER_IN_WINDOWS_SAFELY, buffer, 1, frame); | |
3017 | } | |
ff58478b | 3018 | } |
c6afe371 | 3019 | |
a481b3ea JB |
3020 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the |
3021 | minimum allowable size. */ | |
5500c422 | 3022 | |
605be8af | 3023 | void |
971de7fb | 3024 | check_frame_size (FRAME_PTR frame, int *rows, int *cols) |
a481b3ea | 3025 | { |
628df3bf | 3026 | /* For height, we have to see: |
54b8bcb5 RS |
3027 | how many windows the frame has at minimum (one or two), |
3028 | and whether it has a menu bar or other special stuff at the top. */ | |
3029 | int min_height | |
3030 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
3031 | ? MIN_SAFE_WINDOW_HEIGHT | |
3032 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 3033 | |
5500c422 GM |
3034 | if (FRAME_TOP_MARGIN (frame) > 0) |
3035 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
3036 | |
3037 | if (*rows < min_height) | |
3038 | *rows = min_height; | |
3039 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
3040 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
3041 | } | |
3042 | ||
79fd290e | 3043 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
3044 | Return 1 if window width is ok after adjustment; 0 if window |
3045 | is still too narrow. */ | |
3046 | ||
3047 | static int | |
971de7fb | 3048 | adjust_window_margins (struct window *w) |
949cf20f KS |
3049 | { |
3050 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
3051 | - WINDOW_FRINGE_COLS (w) | |
3052 | - WINDOW_SCROLL_BAR_COLS (w)); | |
3053 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
3054 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
3055 | ||
3056 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
3057 | return 1; | |
3058 | ||
3059 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
3060 | return 0; | |
3061 | ||
3062 | /* Window's text area is too narrow, but reducing the window | |
3063 | margins will fix that. */ | |
3064 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
3065 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
3066 | { | |
3067 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
077288cf | 3068 | { |
e8c17b81 PE |
3069 | wset_left_margin_cols (w, make_number (margin_cols / 2)); |
3070 | wset_right_margin_cols (w, make_number (margin_cols / 2)); | |
077288cf | 3071 | } |
949cf20f | 3072 | else |
e8c17b81 | 3073 | wset_right_margin_cols (w, make_number (margin_cols)); |
949cf20f KS |
3074 | } |
3075 | else | |
e8c17b81 | 3076 | wset_left_margin_cols (w, make_number (margin_cols)); |
949cf20f KS |
3077 | return 1; |
3078 | } | |
562dd5e9 | 3079 | \f |
9397e56f MR |
3080 | /* The following three routines are needed for running a window's |
3081 | configuration change hook. */ | |
562dd5e9 MR |
3082 | static void |
3083 | run_funs (Lisp_Object funs) | |
3084 | { | |
3085 | for (; CONSP (funs); funs = XCDR (funs)) | |
3086 | if (!EQ (XCAR (funs), Qt)) | |
3087 | call0 (XCAR (funs)); | |
3088 | } | |
6b61353c | 3089 | |
9397e56f MR |
3090 | static Lisp_Object |
3091 | select_window_norecord (Lisp_Object window) | |
3092 | { | |
3093 | return WINDOW_LIVE_P (window) | |
3094 | ? Fselect_window (window, Qt) : selected_window; | |
3095 | } | |
3096 | ||
3097 | static Lisp_Object | |
3098 | select_frame_norecord (Lisp_Object frame) | |
3099 | { | |
3100 | return FRAME_LIVE_P (XFRAME (frame)) | |
3101 | ? Fselect_frame (frame, Qt) : selected_frame; | |
3102 | } | |
6b61353c | 3103 | |
562dd5e9 MR |
3104 | void |
3105 | run_window_configuration_change_hook (struct frame *f) | |
3106 | { | |
d311d28c | 3107 | ptrdiff_t count = SPECPDL_INDEX (); |
562dd5e9 MR |
3108 | Lisp_Object frame, global_wcch |
3109 | = Fdefault_value (Qwindow_configuration_change_hook); | |
3110 | XSETFRAME (frame, f); | |
6b61353c | 3111 | |
d1f55f16 | 3112 | if (NILP (Vrun_hooks) || !NILP (inhibit_lisp_code)) |
562dd5e9 | 3113 | return; |
6b61353c | 3114 | |
562dd5e9 MR |
3115 | /* Use the right buffer. Matters when running the local hooks. */ |
3116 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
6b61353c | 3117 | { |
66322887 | 3118 | record_unwind_current_buffer (); |
562dd5e9 MR |
3119 | Fset_buffer (Fwindow_buffer (Qnil)); |
3120 | } | |
6a44ffb3 | 3121 | |
1a13852e MR |
3122 | if (SELECTED_FRAME () != f) |
3123 | { | |
3124 | record_unwind_protect (select_frame_norecord, Fselected_frame ()); | |
3125 | select_frame_norecord (frame); | |
3126 | } | |
3127 | ||
6a44ffb3 SM |
3128 | /* Look for buffer-local values. */ |
3129 | { | |
3130 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
3131 | for (; CONSP (windows); windows = XCDR (windows)) | |
3132 | { | |
3133 | Lisp_Object window = XCAR (windows); | |
3134 | Lisp_Object buffer = Fwindow_buffer (window); | |
3135 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
3136 | buffer))) | |
3137 | { | |
d311d28c | 3138 | ptrdiff_t inner_count = SPECPDL_INDEX (); |
6a44ffb3 SM |
3139 | record_unwind_protect (select_window_norecord, Fselected_window ()); |
3140 | select_window_norecord (window); | |
3141 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
3142 | buffer)); | |
46a4ce9e | 3143 | unbind_to (inner_count, Qnil); |
fec89261 | 3144 | } |
6a44ffb3 SM |
3145 | } |
3146 | } | |
047aaeb9 | 3147 | |
6a44ffb3 SM |
3148 | run_funs (global_wcch); |
3149 | unbind_to (count, Qnil); | |
ef264c42 SM |
3150 | } |
3151 | ||
1a13852e | 3152 | DEFUN ("run-window-configuration-change-hook", Frun_window_configuration_change_hook, |
d9f07150 | 3153 | Srun_window_configuration_change_hook, 0, 1, 0, |
68f8f1c0 | 3154 | doc: /* Run `window-configuration-change-hook' for FRAME. |
d9f07150 | 3155 | If FRAME is omitted or nil, it defaults to the selected frame. */) |
c4b6914d | 3156 | (Lisp_Object frame) |
1a13852e | 3157 | { |
d9f07150 | 3158 | run_window_configuration_change_hook (decode_live_frame (frame)); |
1a13852e MR |
3159 | return Qnil; |
3160 | } | |
3161 | ||
5500c422 GM |
3162 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3163 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3164 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3165 | margins, fringes, and scroll-bar settings of the window are not | |
3166 | reset from the buffer's local settings. */ | |
7ab12479 | 3167 | |
5500c422 | 3168 | void |
971de7fb | 3169 | set_window_buffer (Lisp_Object window, Lisp_Object buffer, int run_hooks_p, int keep_margins_p) |
5500c422 GM |
3170 | { |
3171 | struct window *w = XWINDOW (window); | |
3172 | struct buffer *b = XBUFFER (buffer); | |
d311d28c | 3173 | ptrdiff_t count = SPECPDL_INDEX (); |
d3d50620 | 3174 | int samebuf = EQ (buffer, w->buffer); |
7ab12479 | 3175 | |
e8c17b81 | 3176 | wset_buffer (w, buffer); |
86e48436 RS |
3177 | |
3178 | if (EQ (window, selected_window)) | |
39eb03f1 | 3179 | bset_last_selected_window (b, window); |
beb4e312 | 3180 | |
c49a0495 KS |
3181 | /* Let redisplay errors through. */ |
3182 | b->display_error_modiff = 0; | |
3183 | ||
beb4e312 | 3184 | /* Update time stamps of buffer display. */ |
4b4deea2 | 3185 | if (INTEGERP (BVAR (b, display_count))) |
39eb03f1 PE |
3186 | bset_display_count (b, make_number (XINT (BVAR (b, display_count)) + 1)); |
3187 | bset_display_time (b, Fcurrent_time ()); | |
86e48436 | 3188 | |
e8c17b81 PE |
3189 | wset_window_end_pos (w, make_number (0)); |
3190 | wset_window_end_vpos (w, make_number (0)); | |
72af86bd | 3191 | memset (&w->last_cursor, 0, sizeof w->last_cursor); |
e8c17b81 | 3192 | wset_window_end_valid (w, Qnil); |
c3b232e4 | 3193 | if (!(keep_margins_p && samebuf)) |
23fe745a | 3194 | { /* If we're not actually changing the buffer, don't reset hscroll and |
c3b232e4 SM |
3195 | vscroll. This case happens for example when called from |
3196 | change_frame_size_1, where we use a dummy call to | |
3197 | Fset_window_buffer on the frame's selected window (and no other) | |
3198 | just in order to run window-configuration-change-hook. | |
3199 | Resetting hscroll and vscroll here is problematic for things like | |
3200 | image-mode and doc-view-mode since it resets the image's position | |
3201 | whenever we resize the frame. */ | |
80b00b08 | 3202 | w->hscroll = w->min_hscroll = 0; |
c3b232e4 | 3203 | w->vscroll = 0; |
d3d50620 DA |
3204 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
3205 | set_marker_restricted (w->start, | |
c3b232e4 SM |
3206 | make_number (b->last_window_start), |
3207 | buffer); | |
c98ff5dd DA |
3208 | w->start_at_line_beg = 0; |
3209 | w->force_start = 0; | |
80b00b08 DA |
3210 | w->last_modified = 0; |
3211 | w->last_overlay_modified = 0; | |
c3b232e4 SM |
3212 | } |
3213 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
3214 | I doubt it's worth the trouble. */ | |
7ab12479 | 3215 | windows_or_buffers_changed++; |
5b03d3c0 | 3216 | |
da39107c | 3217 | /* We must select BUFFER for running the window-scroll-functions. */ |
5b03d3c0 RS |
3218 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3219 | because that might itself be a local variable. */ | |
da39107c | 3220 | if (window_initialized) |
5b03d3c0 | 3221 | { |
66322887 | 3222 | record_unwind_current_buffer (); |
5b03d3c0 RS |
3223 | Fset_buffer (buffer); |
3224 | } | |
3225 | ||
d3d50620 | 3226 | XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type); |
a1562258 | 3227 | |
949cf20f KS |
3228 | if (!keep_margins_p) |
3229 | { | |
3230 | /* Set left and right marginal area width etc. from buffer. */ | |
3231 | ||
79fd290e | 3232 | /* This may call adjust_window_margins three times, so |
949cf20f | 3233 | temporarily disable window margins. */ |
d3d50620 DA |
3234 | Lisp_Object save_left = w->left_margin_cols; |
3235 | Lisp_Object save_right = w->right_margin_cols; | |
6b61353c | 3236 | |
e8c17b81 PE |
3237 | wset_left_margin_cols (w, Qnil); |
3238 | wset_right_margin_cols (w, Qnil); | |
949cf20f KS |
3239 | |
3240 | Fset_window_fringes (window, | |
4b4deea2 TT |
3241 | BVAR (b, left_fringe_width), BVAR (b, right_fringe_width), |
3242 | BVAR (b, fringes_outside_margins)); | |
949cf20f KS |
3243 | |
3244 | Fset_window_scroll_bars (window, | |
4b4deea2 TT |
3245 | BVAR (b, scroll_bar_width), |
3246 | BVAR (b, vertical_scroll_bar_type), Qnil); | |
949cf20f | 3247 | |
e8c17b81 PE |
3248 | wset_left_margin_cols (w, save_left); |
3249 | wset_right_margin_cols (w, save_right); | |
6b61353c | 3250 | |
949cf20f | 3251 | Fset_window_margins (window, |
4b4deea2 | 3252 | BVAR (b, left_margin_cols), BVAR (b, right_margin_cols)); |
949cf20f | 3253 | } |
7ab12479 | 3254 | |
5500c422 GM |
3255 | if (run_hooks_p) |
3256 | { | |
3257 | if (! NILP (Vwindow_scroll_functions)) | |
3258 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
d3d50620 | 3259 | Fmarker_position (w->start)); |
ef264c42 | 3260 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
5500c422 | 3261 | } |
543f5fb1 | 3262 | |
5b03d3c0 | 3263 | unbind_to (count, Qnil); |
5500c422 | 3264 | } |
5b03d3c0 | 3265 | |
a7ca3326 | 3266 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
d653c8cc | 3267 | doc: /* Make WINDOW display BUFFER-OR-NAME as its contents. |
52162052 | 3268 | WINDOW must be a live window and defaults to the selected one. |
9397e56f MR |
3269 | BUFFER-OR-NAME must be a buffer or the name of an existing buffer. |
3270 | ||
3271 | Optional third argument KEEP-MARGINS non-nil means that WINDOW's current | |
3272 | display margins, fringe widths, and scroll bar settings are preserved; | |
3273 | the default is to reset these from the local settings for BUFFER-OR-NAME | |
3274 | or the frame defaults. Return nil. | |
d653c8cc | 3275 | |
7bfac547 MR |
3276 | This function throws an error when WINDOW is strongly dedicated to its |
3277 | buffer (that is `window-dedicated-p' returns t for WINDOW) and does not | |
3278 | already display BUFFER-OR-NAME. | |
6cb4a892 | 3279 | |
8fef9de1 MR |
3280 | This function runs `window-scroll-functions' before running |
3281 | `window-configuration-change-hook'. */) | |
5842a27b | 3282 | (register Lisp_Object window, Lisp_Object buffer_or_name, Lisp_Object keep_margins) |
5500c422 | 3283 | { |
d653c8cc | 3284 | register Lisp_Object tem, buffer; |
52162052 | 3285 | register struct window *w = decode_live_window (window); |
5500c422 | 3286 | |
bed0c171 | 3287 | XSETWINDOW (window, w); |
d653c8cc | 3288 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 3289 | CHECK_BUFFER (buffer); |
e578f381 | 3290 | if (!BUFFER_LIVE_P (XBUFFER (buffer))) |
5500c422 GM |
3291 | error ("Attempt to display deleted buffer"); |
3292 | ||
d3d50620 | 3293 | tem = w->buffer; |
aac0c6e3 MR |
3294 | if (NILP (tem)) |
3295 | error ("Window is deleted"); | |
822995f8 | 3296 | else |
5500c422 | 3297 | { |
9397e56f MR |
3298 | if (!EQ (tem, buffer)) |
3299 | { | |
d3d50620 | 3300 | if (EQ (w->dedicated, Qt)) |
9397e56f MR |
3301 | /* WINDOW is strongly dedicated to its buffer, signal an |
3302 | error. */ | |
3303 | error ("Window is dedicated to `%s'", SDATA (BVAR (XBUFFER (tem), name))); | |
3304 | else | |
3305 | /* WINDOW is weakly dedicated to its buffer, reset | |
e4769531 | 3306 | dedication. */ |
e8c17b81 | 3307 | wset_dedicated (w, Qnil); |
9397e56f MR |
3308 | |
3309 | call1 (Qrecord_window_buffer, window); | |
3310 | } | |
5500c422 GM |
3311 | |
3312 | unshow_buffer (w); | |
3313 | } | |
3314 | ||
949cf20f | 3315 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 | 3316 | |
9397e56f | 3317 | return Qnil; |
c6932ecd | 3318 | } |
b7354ddf | 3319 | \f |
7e5cf297 | 3320 | static Lisp_Object |
971de7fb | 3321 | display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, Lisp_Object override_frame) |
d07f802a | 3322 | { |
87478b52 | 3323 | return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); |
d07f802a RS |
3324 | } |
3325 | ||
6b61353c KH |
3326 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, |
3327 | 0, 1, 0, | |
5a1048a5 | 3328 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 3329 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3330 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c | 3331 | displaying that buffer. */) |
5842a27b | 3332 | (Lisp_Object object) |
6b61353c KH |
3333 | { |
3334 | if (NILP (object)) | |
3335 | { | |
3336 | windows_or_buffers_changed++; | |
3337 | update_mode_lines++; | |
3338 | return Qt; | |
3339 | } | |
3340 | ||
3341 | if (WINDOWP (object)) | |
3342 | { | |
3343 | struct window *w = XWINDOW (object); | |
3344 | mark_window_display_accurate (object, 0); | |
c98ff5dd | 3345 | w->update_mode_line = 1; |
d3d50620 DA |
3346 | if (BUFFERP (w->buffer)) |
3347 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
6b61353c KH |
3348 | ++update_mode_lines; |
3349 | return Qt; | |
3350 | } | |
0cc1039f | 3351 | |
6b61353c KH |
3352 | if (STRINGP (object)) |
3353 | object = Fget_buffer (object); | |
c6afe371 DA |
3354 | if (BUFFERP (object) && BUFFER_LIVE_P (XBUFFER (object)) |
3355 | && buffer_window_count (XBUFFER (object))) | |
6b61353c | 3356 | { |
c6afe371 DA |
3357 | /* If buffer is live and shown in at least one window, find |
3358 | all windows showing this buffer and force update of them. */ | |
6b61353c KH |
3359 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); |
3360 | return NILP (object) ? Qnil : Qt; | |
3361 | } | |
3362 | ||
3363 | /* If nothing suitable was found, just return. | |
3364 | We could signal an error, but this feature will typically be used | |
3365 | asynchronously in timers or process sentinels, so we don't. */ | |
3366 | return Qnil; | |
3367 | } | |
3368 | ||
1f76f6f5 | 3369 | /* Obsolete since 24.3. */ |
7ab12479 | 3370 | void |
971de7fb | 3371 | temp_output_buffer_show (register Lisp_Object buf) |
7ab12479 JB |
3372 | { |
3373 | register struct buffer *old = current_buffer; | |
3374 | register Lisp_Object window; | |
3375 | register struct window *w; | |
3376 | ||
39eb03f1 | 3377 | bset_directory (XBUFFER (buf), BVAR (current_buffer, directory)); |
bccd3dd1 | 3378 | |
7ab12479 | 3379 | Fset_buffer (buf); |
c6367666 | 3380 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3381 | BEGV = BEG; |
3382 | ZV = Z; | |
3383 | SET_PT (BEG); | |
7ab12479 JB |
3384 | set_buffer_internal (old); |
3385 | ||
e67a1dea | 3386 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3387 | call1 (Vtemp_buffer_show_function, buf); |
3388 | else | |
3389 | { | |
4ee88440 | 3390 | window = display_buffer (buf, Qnil, Qnil); |
7ab12479 | 3391 | |
d3d50620 | 3392 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3393 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3394 | Vminibuf_scroll_window = window; |
3395 | w = XWINDOW (window); | |
80b00b08 DA |
3396 | w->hscroll = 0; |
3397 | w->min_hscroll = 0; | |
d3d50620 DA |
3398 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3399 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3400 | |
beb4e312 | 3401 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3402 | and its buffer current. */ |
dee091a3 | 3403 | { |
d311d28c | 3404 | ptrdiff_t count = SPECPDL_INDEX (); |
dee091a3 JD |
3405 | Lisp_Object prev_window, prev_buffer; |
3406 | prev_window = selected_window; | |
3407 | XSETBUFFER (prev_buffer, old); | |
3408 | ||
3409 | /* Select the window that was chosen, for running the hook. | |
3410 | Note: Both Fselect_window and select_window_norecord may | |
3411 | set-buffer to the buffer displayed in the window, | |
3412 | so we need to save the current buffer. --stef */ | |
3413 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3414 | record_unwind_protect (select_window_norecord, prev_window); | |
3415 | Fselect_window (window, Qt); | |
d3d50620 | 3416 | Fset_buffer (w->buffer); |
dee091a3 JD |
3417 | Frun_hooks (1, &Qtemp_buffer_show_hook); |
3418 | unbind_to (count, Qnil); | |
3419 | } | |
2cccc823 | 3420 | } |
7ab12479 JB |
3421 | } |
3422 | \f | |
1a13852e MR |
3423 | /* Make new window, have it replace WINDOW in window-tree, and make |
3424 | WINDOW its only vertical child (HORFLAG 1 means make WINDOW its only | |
3425 | horizontal child). */ | |
3426 | static void | |
3427 | make_parent_window (Lisp_Object window, int horflag) | |
3428 | { | |
3429 | Lisp_Object parent; | |
3430 | register struct window *o, *p; | |
1a13852e MR |
3431 | |
3432 | o = XWINDOW (window); | |
3433 | p = allocate_window (); | |
aa754e6a | 3434 | memcpy ((char *) p + sizeof (struct vectorlike_header), |
62efea5e | 3435 | (char *) o + sizeof (struct vectorlike_header), |
663e2b3f | 3436 | word_size * VECSIZE (struct window)); |
98a07056 DA |
3437 | /* P's buffer slot may change from nil to a buffer. */ |
3438 | adjust_window_count (p, 1); | |
1a13852e MR |
3439 | XSETWINDOW (parent, p); |
3440 | ||
45942c7d | 3441 | p->sequence_number = ++sequence_number; |
1a13852e MR |
3442 | |
3443 | replace_window (window, parent, 1); | |
3444 | ||
e8c17b81 PE |
3445 | wset_next (o, Qnil); |
3446 | wset_prev (o, Qnil); | |
3447 | wset_parent (o, parent); | |
1a13852e | 3448 | |
e8c17b81 PE |
3449 | wset_hchild (p, horflag ? window : Qnil); |
3450 | wset_vchild (p, horflag ? Qnil : window); | |
3451 | wset_start (p, Qnil); | |
3452 | wset_pointm (p, Qnil); | |
3453 | wset_buffer (p, Qnil); | |
3454 | wset_combination_limit (p, Qnil); | |
3455 | wset_window_parameters (p, Qnil); | |
1a13852e MR |
3456 | } |
3457 | ||
496e208e MR |
3458 | /* Make new window from scratch. */ |
3459 | Lisp_Object | |
3460 | make_window (void) | |
3461 | { | |
3462 | Lisp_Object window; | |
3463 | register struct window *w; | |
3464 | ||
3465 | w = allocate_window (); | |
62efea5e DA |
3466 | /* Initialize Lisp data. Note that allocate_window initializes all |
3467 | Lisp data to nil, so do it only for slots which should not be nil. */ | |
e8c17b81 PE |
3468 | wset_left_col (w, make_number (0)); |
3469 | wset_top_line (w, make_number (0)); | |
3470 | wset_total_lines (w, make_number (0)); | |
3471 | wset_total_cols (w, make_number (0)); | |
3472 | wset_normal_lines (w, make_float (1.0)); | |
3473 | wset_normal_cols (w, make_float (1.0)); | |
3474 | wset_new_total (w, make_number (0)); | |
3475 | wset_new_normal (w, make_number (0)); | |
3476 | wset_start (w, Fmake_marker ()); | |
3477 | wset_pointm (w, Fmake_marker ()); | |
3478 | wset_vertical_scroll_bar_type (w, Qt); | |
3479 | wset_window_end_pos (w, make_number (0)); | |
3480 | wset_window_end_vpos (w, make_number (0)); | |
e99f70c8 SM |
3481 | /* These Lisp fields are marked specially so they're not set to nil by |
3482 | allocate_window. */ | |
3483 | wset_prev_buffers (w, Qnil); | |
3484 | wset_next_buffers (w, Qnil); | |
62efea5e DA |
3485 | |
3486 | /* Initialize non-Lisp data. Note that allocate_window zeroes out all | |
3487 | non-Lisp data, so do it only for slots which should not be zero. */ | |
496e208e | 3488 | w->nrows_scale_factor = w->ncols_scale_factor = 1; |
496e208e MR |
3489 | w->phys_cursor_type = -1; |
3490 | w->phys_cursor_width = -1; | |
45942c7d | 3491 | w->sequence_number = ++sequence_number; |
62efea5e | 3492 | |
496e208e MR |
3493 | /* Reset window_list. */ |
3494 | Vwindow_list = Qnil; | |
3495 | /* Return window. */ | |
3496 | XSETWINDOW (window, w); | |
3497 | return window; | |
3498 | } | |
3499 | \f | |
3500 | DEFUN ("set-window-new-total", Fset_window_new_total, Sset_window_new_total, 2, 3, 0, | |
3501 | doc: /* Set new total size of WINDOW to SIZE. | |
52162052 | 3502 | WINDOW must be a valid window and defaults to the selected one. |
496e208e MR |
3503 | Return SIZE. |
3504 | ||
3505 | Optional argument ADD non-nil means add SIZE to the new total size of | |
3506 | WINDOW and return the sum. | |
3507 | ||
be7f5545 | 3508 | Note: This function does not operate on any child windows of WINDOW. */) |
496e208e MR |
3509 | (Lisp_Object window, Lisp_Object size, Lisp_Object add) |
3510 | { | |
52162052 | 3511 | struct window *w = decode_valid_window (window); |
496e208e MR |
3512 | |
3513 | CHECK_NUMBER (size); | |
3514 | if (NILP (add)) | |
e8c17b81 | 3515 | wset_new_total (w, size); |
496e208e | 3516 | else |
e8c17b81 | 3517 | wset_new_total (w, make_number (XINT (w->new_total) + XINT (size))); |
496e208e | 3518 | |
d3d50620 | 3519 | return w->new_total; |
496e208e MR |
3520 | } |
3521 | ||
3522 | DEFUN ("set-window-new-normal", Fset_window_new_normal, Sset_window_new_normal, 1, 2, 0, | |
3523 | doc: /* Set new normal size of WINDOW to SIZE. | |
52162052 | 3524 | WINDOW must be a valid window and defaults to the selected one. |
496e208e MR |
3525 | Return SIZE. |
3526 | ||
be7f5545 | 3527 | Note: This function does not operate on any child windows of WINDOW. */) |
496e208e MR |
3528 | (Lisp_Object window, Lisp_Object size) |
3529 | { | |
e8c17b81 PE |
3530 | wset_new_normal (decode_valid_window (window), size); |
3531 | return size; | |
7ab12479 JB |
3532 | } |
3533 | ||
1a13852e MR |
3534 | /* Return 1 if setting w->total_lines (w->total_cols if HORFLAG is |
3535 | non-zero) to w->new_total would result in correct heights (widths) | |
be7f5545 | 3536 | for window W and recursively all child windows of W. |
1a13852e MR |
3537 | |
3538 | Note: This function does not check any of `window-fixed-size-p', | |
3539 | `window-min-height' or `window-min-width'. It does check that window | |
3540 | sizes do not drop below one line (two columns). */ | |
4b66faf3 | 3541 | static int |
d615d6d2 | 3542 | window_resize_check (struct window *w, int horflag) |
1a13852e MR |
3543 | { |
3544 | struct window *c; | |
3545 | ||
d3d50620 | 3546 | if (!NILP (w->vchild)) |
1a13852e MR |
3547 | /* W is a vertical combination. */ |
3548 | { | |
d3d50620 | 3549 | c = XWINDOW (w->vchild); |
1a13852e | 3550 | if (horflag) |
be7f5545 | 3551 | /* All child windows of W must have the same width as W. */ |
1a13852e MR |
3552 | { |
3553 | while (c) | |
3554 | { | |
d3d50620 | 3555 | if ((XINT (c->new_total) != XINT (w->new_total)) |
d615d6d2 | 3556 | || !window_resize_check (c, horflag)) |
1a13852e | 3557 | return 0; |
d3d50620 | 3558 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3559 | } |
3560 | return 1; | |
3561 | } | |
3562 | else | |
be7f5545 MR |
3563 | /* The sum of the heights of the child windows of W must equal |
3564 | W's height. */ | |
1a13852e MR |
3565 | { |
3566 | int sum_of_sizes = 0; | |
3567 | while (c) | |
3568 | { | |
d615d6d2 | 3569 | if (!window_resize_check (c, horflag)) |
1a13852e | 3570 | return 0; |
d3d50620 DA |
3571 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); |
3572 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e | 3573 | } |
d3d50620 | 3574 | return (sum_of_sizes == XINT (w->new_total)); |
1a13852e MR |
3575 | } |
3576 | } | |
d3d50620 | 3577 | else if (!NILP (w->hchild)) |
1a13852e MR |
3578 | /* W is a horizontal combination. */ |
3579 | { | |
d3d50620 | 3580 | c = XWINDOW (w->hchild); |
1a13852e | 3581 | if (horflag) |
be7f5545 | 3582 | /* The sum of the widths of the child windows of W must equal W's |
1a13852e MR |
3583 | width. */ |
3584 | { | |
3585 | int sum_of_sizes = 0; | |
3586 | while (c) | |
3587 | { | |
d615d6d2 | 3588 | if (!window_resize_check (c, horflag)) |
1a13852e | 3589 | return 0; |
d3d50620 DA |
3590 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); |
3591 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e | 3592 | } |
d3d50620 | 3593 | return (sum_of_sizes == XINT (w->new_total)); |
1a13852e MR |
3594 | } |
3595 | else | |
be7f5545 | 3596 | /* All child windows of W must have the same height as W. */ |
1a13852e MR |
3597 | { |
3598 | while (c) | |
3599 | { | |
d3d50620 | 3600 | if ((XINT (c->new_total) != XINT (w->new_total)) |
d615d6d2 | 3601 | || !window_resize_check (c, horflag)) |
1a13852e | 3602 | return 0; |
d3d50620 | 3603 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3604 | } |
3605 | return 1; | |
3606 | } | |
3607 | } | |
3608 | else | |
3609 | /* A leaf window. Make sure it's not too small. The following | |
3610 | hardcodes the values of `window-safe-min-width' (2) and | |
3611 | `window-safe-min-height' (1) which are defined in window.el. */ | |
d3d50620 | 3612 | return XINT (w->new_total) >= (horflag ? 2 : 1); |
1a13852e MR |
3613 | } |
3614 | ||
3615 | /* Set w->total_lines (w->total_cols if HORIZONTAL is non-zero) to | |
be7f5545 MR |
3616 | w->new_total for window W and recursively all child windows of W. |
3617 | Also calculate and assign the new vertical (horizontal) start | |
3618 | positions of each of these windows. | |
1a13852e MR |
3619 | |
3620 | This function does not perform any error checks. Make sure you have | |
d615d6d2 | 3621 | run window_resize_check on W before applying this function. */ |
440a42e3 | 3622 | static void |
d615d6d2 | 3623 | window_resize_apply (struct window *w, int horflag) |
1a13852e | 3624 | { |
46a4ce9e | 3625 | struct window *c; |
1a13852e MR |
3626 | int pos; |
3627 | ||
3628 | /* Note: Assigning new_normal requires that the new total size of the | |
3629 | parent window has been set *before*. */ | |
3630 | if (horflag) | |
3631 | { | |
e8c17b81 | 3632 | wset_total_cols (w, w->new_total); |
d3d50620 | 3633 | if (NUMBERP (w->new_normal)) |
e8c17b81 | 3634 | wset_normal_cols (w, w->new_normal); |
1a13852e | 3635 | |
d3d50620 | 3636 | pos = XINT (w->left_col); |
1a13852e MR |
3637 | } |
3638 | else | |
3639 | { | |
e8c17b81 | 3640 | wset_total_lines (w, w->new_total); |
d3d50620 | 3641 | if (NUMBERP (w->new_normal)) |
e8c17b81 | 3642 | wset_normal_lines (w, w->new_normal); |
1a13852e | 3643 | |
d3d50620 | 3644 | pos = XINT (w->top_line); |
1a13852e MR |
3645 | } |
3646 | ||
d3d50620 | 3647 | if (!NILP (w->vchild)) |
1a13852e MR |
3648 | /* W is a vertical combination. */ |
3649 | { | |
d3d50620 | 3650 | c = XWINDOW (w->vchild); |
1a13852e MR |
3651 | while (c) |
3652 | { | |
3653 | if (horflag) | |
e8c17b81 | 3654 | wset_left_col (c, make_number (pos)); |
1a13852e | 3655 | else |
e8c17b81 | 3656 | wset_top_line (c, make_number (pos)); |
d615d6d2 | 3657 | window_resize_apply (c, horflag); |
1a13852e | 3658 | if (!horflag) |
d3d50620 DA |
3659 | pos = pos + XINT (c->total_lines); |
3660 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e MR |
3661 | } |
3662 | } | |
d3d50620 | 3663 | else if (!NILP (w->hchild)) |
1a13852e MR |
3664 | /* W is a horizontal combination. */ |
3665 | { | |
d3d50620 | 3666 | c = XWINDOW (w->hchild); |
1a13852e MR |
3667 | while (c) |
3668 | { | |
3669 | if (horflag) | |
e8c17b81 | 3670 | wset_left_col (c, make_number (pos)); |
1a13852e | 3671 | else |
e8c17b81 | 3672 | wset_top_line (c, make_number (pos)); |
d615d6d2 | 3673 | window_resize_apply (c, horflag); |
1a13852e | 3674 | if (horflag) |
d3d50620 DA |
3675 | pos = pos + XINT (c->total_cols); |
3676 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e MR |
3677 | } |
3678 | } | |
3679 | ||
3680 | /* Clear out some redisplay caches. */ | |
80b00b08 DA |
3681 | w->last_modified = 0; |
3682 | w->last_overlay_modified = 0; | |
1a13852e MR |
3683 | } |
3684 | ||
3685 | ||
d9f07150 | 3686 | DEFUN ("window-resize-apply", Fwindow_resize_apply, Swindow_resize_apply, 0, 2, 0, |
1a13852e | 3687 | doc: /* Apply requested size values for window-tree of FRAME. |
d9f07150 DA |
3688 | If FRAME is omitted or nil, it defaults to the selected frame. |
3689 | ||
3690 | Optional argument HORIZONTAL omitted or nil means apply requested | |
3691 | height values. HORIZONTAL non-nil means apply requested width values. | |
1a13852e MR |
3692 | |
3693 | This function checks whether the requested values sum up to a valid | |
be7f5545 MR |
3694 | window layout, recursively assigns the new sizes of all child windows |
3695 | and calculates and assigns the new start positions of these windows. | |
1a13852e MR |
3696 | |
3697 | Note: This function does not check any of `window-fixed-size-p', | |
3698 | `window-min-height' or `window-min-width'. All these checks have to | |
3699 | be applied on the Elisp level. */) | |
3700 | (Lisp_Object frame, Lisp_Object horizontal) | |
3701 | { | |
d9f07150 DA |
3702 | struct frame *f = decode_live_frame (frame); |
3703 | struct window *r = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
1a13852e MR |
3704 | int horflag = !NILP (horizontal); |
3705 | ||
d615d6d2 | 3706 | if (!window_resize_check (r, horflag) |
d3d50620 DA |
3707 | || ! EQ (r->new_total, |
3708 | (horflag ? r->total_cols : r->total_lines))) | |
1a13852e MR |
3709 | return Qnil; |
3710 | ||
4d7e6e51 | 3711 | block_input (); |
d615d6d2 | 3712 | window_resize_apply (r, horflag); |
1a13852e MR |
3713 | |
3714 | windows_or_buffers_changed++; | |
3715 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3716 | ||
3717 | adjust_glyphs (f); | |
4d7e6e51 | 3718 | unblock_input (); |
1a13852e MR |
3719 | |
3720 | run_window_configuration_change_hook (f); | |
3721 | ||
3722 | return Qt; | |
3723 | } | |
3724 | ||
3725 | ||
3726 | /* Resize frame F's windows when number of lines of F is set to SIZE. | |
3727 | HORFLAG 1 means resize windows when number of columns of F is set to | |
3728 | SIZE. | |
3729 | ||
3730 | This function can delete all windows but the selected one in order to | |
3731 | satisfy the request. The result will be meaningful if and only if | |
3732 | F's windows have meaningful sizes when you call this. */ | |
3733 | void | |
3734 | resize_frame_windows (struct frame *f, int size, int horflag) | |
3735 | { | |
e69b0960 | 3736 | Lisp_Object root = f->root_window; |
1a13852e | 3737 | struct window *r = XWINDOW (root); |
e69b0960 | 3738 | Lisp_Object mini = f->minibuffer_window; |
1a13852e MR |
3739 | struct window *m; |
3740 | /* new_size is the new size of the frame's root window. */ | |
3741 | int new_size = (horflag | |
3742 | ? size | |
3743 | : (size | |
3744 | - FRAME_TOP_MARGIN (f) | |
3745 | - ((FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3746 | ? 1 : 0))); | |
3747 | ||
e8c17b81 | 3748 | wset_top_line (r, make_number (FRAME_TOP_MARGIN (f))); |
d3d50620 | 3749 | if (NILP (r->vchild) && NILP (r->hchild)) |
1a13852e MR |
3750 | /* For a leaf root window just set the size. */ |
3751 | if (horflag) | |
e8c17b81 | 3752 | wset_total_cols (r, make_number (new_size)); |
1a13852e | 3753 | else |
e8c17b81 | 3754 | wset_total_lines (r, make_number (new_size)); |
1a13852e MR |
3755 | else |
3756 | { | |
3757 | /* old_size is the old size of the frame's root window. */ | |
f00af5b1 | 3758 | int old_size = XFASTINT (horflag ? r->total_cols |
d3d50620 | 3759 | : 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) | |
e8c17b81 | 3789 | wset_total_cols (XWINDOW (root), make_number (new_size)); |
1a13852e | 3790 | else |
e8c17b81 | 3791 | wset_total_lines (XWINDOW (root), make_number (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) | |
e8c17b81 | 3801 | wset_total_cols (m, make_number (size)); |
1a13852e MR |
3802 | else |
3803 | { | |
3804 | /* Are we sure we always want 1 line here? */ | |
e8c17b81 PE |
3805 | wset_total_lines (m, make_number (1)); |
3806 | wset_top_line | |
3807 | (m, make_number (XINT (r->top_line) + XINT (r->total_lines))); | |
1a13852e MR |
3808 | } |
3809 | } | |
dca778d5 MR |
3810 | |
3811 | windows_or_buffers_changed++; | |
1a13852e MR |
3812 | } |
3813 | ||
3814 | ||
3815 | DEFUN ("split-window-internal", Fsplit_window_internal, Ssplit_window_internal, 4, 4, 0, | |
3816 | doc: /* Split window OLD. | |
3817 | Second argument TOTAL-SIZE specifies the number of lines or columns of the | |
9397e56f | 3818 | new window. In any case TOTAL-SIZE must be a positive integer. |
1a13852e MR |
3819 | |
3820 | Third argument SIDE nil (or `below') specifies that the new window shall | |
3821 | be located below WINDOW. SIDE `above' means the new window shall be | |
3822 | located above WINDOW. In both cases TOTAL-SIZE specifies the number of | |
3823 | lines of the new window including space reserved for the mode and/or | |
3824 | header line. | |
3825 | ||
3826 | SIDE t (or `right') specifies that the new window shall be located on | |
3827 | the right side of WINDOW. SIDE `left' means the new window shall be | |
3828 | located on the left of WINDOW. In both cases TOTAL-SIZE specifies the | |
3829 | number of columns of the new window including space reserved for fringes | |
3830 | and the scrollbar or a divider column. | |
3831 | ||
3832 | Fourth argument NORMAL-SIZE specifies the normal size of the new window | |
3833 | according to the SIDE argument. | |
3834 | ||
3835 | The new total and normal sizes of all involved windows must have been | |
3836 | set correctly. See the code of `split-window' for how this is done. */) | |
3837 | (Lisp_Object old, Lisp_Object total_size, Lisp_Object side, Lisp_Object normal_size) | |
3838 | { | |
3839 | /* OLD (*o) is the window we have to split. (*p) is either OLD's | |
3840 | parent window or an internal window we have to install as OLD's new | |
3841 | parent. REFERENCE (*r) must denote a live window, or is set to OLD | |
3842 | provided OLD is a leaf window, or to the frame's selected window. | |
3843 | NEW (*n) is the new window created with some parameters taken from | |
3844 | REFERENCE (*r). */ | |
3845 | register Lisp_Object new, frame, reference; | |
3846 | register struct window *o, *p, *n, *r; | |
3847 | struct frame *f; | |
3848 | int horflag | |
3849 | /* HORFLAG is 1 when we split side-by-side, 0 otherwise. */ | |
3850 | = EQ (side, Qt) || EQ (side, Qleft) || EQ (side, Qright); | |
b6f67890 | 3851 | int combination_limit = 0; |
1a13852e MR |
3852 | |
3853 | CHECK_WINDOW (old); | |
3854 | o = XWINDOW (old); | |
3855 | frame = WINDOW_FRAME (o); | |
3856 | f = XFRAME (frame); | |
3857 | ||
3858 | CHECK_NUMBER (total_size); | |
3859 | ||
b6f67890 MR |
3860 | /* Set combination_limit to 1 if we have to make a new parent window. |
3861 | We do that if either `window-combination-limit' is t, or OLD has no | |
3862 | parent, or OLD is ortho-combined. */ | |
3863 | combination_limit = | |
8e17c9ba | 3864 | EQ (Vwindow_combination_limit, Qt) |
d3d50620 | 3865 | || NILP (o->parent) |
1a13852e | 3866 | || NILP (horflag |
d3d50620 DA |
3867 | ? (XWINDOW (o->parent)->hchild) |
3868 | : (XWINDOW (o->parent)->vchild)); | |
1a13852e MR |
3869 | |
3870 | /* We need a live reference window to initialize some parameters. */ | |
3871 | if (WINDOW_LIVE_P (old)) | |
3872 | /* OLD is live, use it as reference window. */ | |
3873 | reference = old; | |
3874 | else | |
3875 | /* Use the frame's selected window as reference window. */ | |
3876 | reference = FRAME_SELECTED_WINDOW (f); | |
3877 | r = XWINDOW (reference); | |
3878 | ||
3879 | /* The following bugs are caught by `split-window'. */ | |
3880 | if (MINI_WINDOW_P (o)) | |
3881 | error ("Attempt to split minibuffer window"); | |
3882 | else if (XINT (total_size) < (horflag ? 2 : 1)) | |
3883 | error ("Size of new window too small (after split)"); | |
a0c2d0ae MR |
3884 | else if (!combination_limit && !NILP (Vwindow_combination_resize)) |
3885 | /* `window-combination-resize' non-nil means try to resize OLD's siblings | |
1a13852e MR |
3886 | proportionally. */ |
3887 | { | |
d3d50620 | 3888 | p = XWINDOW (o->parent); |
1a13852e | 3889 | /* Temporarily pretend we split the parent window. */ |
e8c17b81 PE |
3890 | wset_new_total |
3891 | (p, make_number (XINT (horflag ? p->total_cols : p->total_lines) | |
077288cf | 3892 | - XINT (total_size))); |
d615d6d2 | 3893 | if (!window_resize_check (p, horflag)) |
1a13852e MR |
3894 | error ("Window sizes don't fit"); |
3895 | else | |
3896 | /* Undo the temporary pretension. */ | |
e8c17b81 | 3897 | wset_new_total (p, 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 DA |
3903 | else if (XINT (total_size) + XINT (o->new_total) |
3904 | != XINT (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. */ |
e8c17b81 PE |
3924 | wset_new_total (p, horflag ? o->total_cols : o->total_lines); |
3925 | wset_new_normal (p, new_normal); | |
1a13852e MR |
3926 | } |
3927 | else | |
d3d50620 | 3928 | p = XWINDOW (o->parent); |
1a13852e MR |
3929 | |
3930 | windows_or_buffers_changed++; | |
3931 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3932 | new = make_window (); | |
3933 | n = XWINDOW (new); | |
e8c17b81 PE |
3934 | wset_frame (n, frame); |
3935 | wset_parent (n, o->parent); | |
3936 | wset_vchild (n, Qnil); | |
3937 | wset_hchild (n, Qnil); | |
1a13852e MR |
3938 | |
3939 | if (EQ (side, Qabove) || EQ (side, Qleft)) | |
3940 | { | |
e8c17b81 | 3941 | wset_prev (n, o->prev); |
d3d50620 | 3942 | if (NILP (n->prev)) |
1a13852e | 3943 | if (horflag) |
e8c17b81 | 3944 | wset_hchild (p, new); |
1a13852e | 3945 | else |
e8c17b81 | 3946 | wset_vchild (p, new); |
1a13852e | 3947 | else |
e8c17b81 PE |
3948 | wset_next (XWINDOW (n->prev), new); |
3949 | wset_next (n, old); | |
3950 | wset_prev (o, new); | |
1a13852e MR |
3951 | } |
3952 | else | |
3953 | { | |
e8c17b81 | 3954 | wset_next (n, o->next); |
d3d50620 | 3955 | if (!NILP (n->next)) |
e8c17b81 PE |
3956 | wset_prev (XWINDOW (n->next), new); |
3957 | wset_prev (n, old); | |
3958 | wset_next (o, new); | |
1a13852e MR |
3959 | } |
3960 | ||
e8c17b81 | 3961 | wset_window_end_valid (n, Qnil); |
1a13852e MR |
3962 | memset (&n->last_cursor, 0, sizeof n->last_cursor); |
3963 | ||
3964 | /* Get special geometry settings from reference window. */ | |
e8c17b81 PE |
3965 | wset_left_margin_cols (n, r->left_margin_cols); |
3966 | wset_right_margin_cols (n, r->right_margin_cols); | |
3967 | wset_left_fringe_width (n, r->left_fringe_width); | |
3968 | wset_right_fringe_width (n, r->right_fringe_width); | |
1a13852e | 3969 | n->fringes_outside_margins = r->fringes_outside_margins; |
e8c17b81 PE |
3970 | wset_scroll_bar_width (n, r->scroll_bar_width); |
3971 | wset_vertical_scroll_bar_type (n, r->vertical_scroll_bar_type); | |
1a13852e | 3972 | |
1a13852e MR |
3973 | /* Directly assign orthogonal coordinates and sizes. */ |
3974 | if (horflag) | |
3975 | { | |
e8c17b81 PE |
3976 | wset_top_line (n, o->top_line); |
3977 | wset_total_lines (n, o->total_lines); | |
1a13852e MR |
3978 | } |
3979 | else | |
3980 | { | |
e8c17b81 PE |
3981 | wset_left_col (n, o->left_col); |
3982 | wset_total_cols (n, o->total_cols); | |
1a13852e MR |
3983 | } |
3984 | ||
d615d6d2 | 3985 | /* Iso-coordinates and sizes are assigned by window_resize_apply, |
1a13852e | 3986 | get them ready here. */ |
e8c17b81 PE |
3987 | wset_new_total (n, total_size); |
3988 | wset_new_normal (n, normal_size); | |
1a13852e | 3989 | |
4d7e6e51 | 3990 | block_input (); |
d615d6d2 | 3991 | window_resize_apply (p, horflag); |
1a13852e MR |
3992 | adjust_glyphs (f); |
3993 | /* Set buffer of NEW to buffer of reference window. Don't run | |
3994 | any hooks. */ | |
d3d50620 | 3995 | set_window_buffer (new, r->buffer, 0, 1); |
4d7e6e51 | 3996 | unblock_input (); |
1a13852e MR |
3997 | |
3998 | /* Maybe we should run the scroll functions in Elisp (which already | |
3999 | runs the configuration change hook). */ | |
4000 | if (! NILP (Vwindow_scroll_functions)) | |
4001 | run_hook_with_args_2 (Qwindow_scroll_functions, new, | |
d3d50620 | 4002 | Fmarker_position (n->start)); |
1a13852e MR |
4003 | /* Return NEW. */ |
4004 | return new; | |
4005 | } | |
4006 | ||
4007 | ||
4008 | DEFUN ("delete-window-internal", Fdelete_window_internal, Sdelete_window_internal, 1, 1, 0, | |
4009 | doc: /* Remove WINDOW from its frame. | |
87e68db4 JB |
4010 | WINDOW defaults to the selected window. Return nil. |
4011 | Signal an error when WINDOW is the only window on its frame. */) | |
1a13852e MR |
4012 | (register Lisp_Object window) |
4013 | { | |
4014 | register Lisp_Object parent, sibling, frame, root; | |
4015 | struct window *w, *p, *s, *r; | |
4016 | struct frame *f; | |
4017 | int horflag; | |
4018 | int before_sibling = 0; | |
4019 | ||
4020 | w = decode_any_window (window); | |
4021 | XSETWINDOW (window, w); | |
d3d50620 DA |
4022 | if (NILP (w->buffer) |
4023 | && NILP (w->hchild) && NILP (w->vchild)) | |
1a13852e MR |
4024 | /* It's a no-op to delete an already deleted window. */ |
4025 | return Qnil; | |
4026 | ||
d3d50620 | 4027 | parent = w->parent; |
1a13852e MR |
4028 | if (NILP (parent)) |
4029 | /* Never delete a minibuffer or frame root window. */ | |
4030 | error ("Attempt to delete minibuffer or sole ordinary window"); | |
d3d50620 | 4031 | else if (NILP (w->prev) && NILP (w->next)) |
1a13852e MR |
4032 | /* Rather bow out here, this case should be handled on the Elisp |
4033 | level. */ | |
4034 | error ("Attempt to delete sole window of parent"); | |
4035 | ||
4036 | p = XWINDOW (parent); | |
d3d50620 | 4037 | horflag = NILP (p->vchild); |
1a13852e MR |
4038 | |
4039 | frame = WINDOW_FRAME (w); | |
4040 | f = XFRAME (frame); | |
4041 | ||
4042 | root = FRAME_ROOT_WINDOW (f); | |
4043 | r = XWINDOW (root); | |
4044 | ||
4045 | /* Unlink WINDOW from window tree. */ | |
d3d50620 | 4046 | if (NILP (w->prev)) |
1a13852e MR |
4047 | /* Get SIBLING below (on the right of) WINDOW. */ |
4048 | { | |
4049 | /* before_sibling 1 means WINDOW is the first child of its | |
4050 | parent and thus before the sibling. */ | |
4051 | before_sibling = 1; | |
d3d50620 | 4052 | sibling = w->next; |
1a13852e | 4053 | s = XWINDOW (sibling); |
e8c17b81 | 4054 | wset_prev (s, Qnil); |
1a13852e | 4055 | if (horflag) |
e8c17b81 | 4056 | wset_hchild (p, sibling); |
1a13852e | 4057 | else |
e8c17b81 | 4058 | wset_vchild (p, sibling); |
1a13852e MR |
4059 | } |
4060 | else | |
4061 | /* Get SIBLING above (on the left of) WINDOW. */ | |
4062 | { | |
d3d50620 | 4063 | sibling = w->prev; |
1a13852e | 4064 | s = XWINDOW (sibling); |
e8c17b81 | 4065 | wset_next (s, w->next); |
d3d50620 | 4066 | if (!NILP (s->next)) |
e8c17b81 | 4067 | wset_prev (XWINDOW (s->next), sibling); |
7ab12479 JB |
4068 | } |
4069 | ||
d615d6d2 | 4070 | if (window_resize_check (r, horflag) |
d3d50620 DA |
4071 | && EQ (r->new_total, |
4072 | (horflag ? r->total_cols : r->total_lines))) | |
562dd5e9 MR |
4073 | /* We can delete WINDOW now. */ |
4074 | { | |
95986d52 | 4075 | |
562dd5e9 | 4076 | /* Block input. */ |
4d7e6e51 | 4077 | block_input (); |
d615d6d2 | 4078 | window_resize_apply (p, horflag); |
0d384044 | 4079 | |
95986d52 CY |
4080 | /* If this window is referred to by the dpyinfo's mouse |
4081 | highlight, invalidate that slot to be safe (Bug#9904). */ | |
4c5501e9 EZ |
4082 | if (!FRAME_INITIAL_P (f)) |
4083 | { | |
4084 | Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f); | |
4085 | ||
4086 | if (EQ (hlinfo->mouse_face_window, window)) | |
4087 | hlinfo->mouse_face_window = Qnil; | |
4088 | } | |
95986d52 | 4089 | |
562dd5e9 MR |
4090 | windows_or_buffers_changed++; |
4091 | Vwindow_list = Qnil; | |
4092 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
0d384044 | 4093 | |
e8c17b81 | 4094 | wset_next (w, Qnil); /* Don't delete w->next too. */ |
562dd5e9 | 4095 | free_window_matrices (w); |
bd99e242 | 4096 | |
d3d50620 | 4097 | if (!NILP (w->vchild)) |
0d384044 | 4098 | { |
d3d50620 | 4099 | delete_all_child_windows (w->vchild); |
e8c17b81 | 4100 | wset_vchild (w, Qnil); |
0d384044 | 4101 | } |
d3d50620 | 4102 | else if (!NILP (w->hchild)) |
bd99e242 | 4103 | { |
d3d50620 | 4104 | delete_all_child_windows (w->hchild); |
e8c17b81 | 4105 | wset_hchild (w, Qnil); |
bd99e242 | 4106 | } |
d3d50620 | 4107 | else if (!NILP (w->buffer)) |
bd99e242 | 4108 | { |
562dd5e9 | 4109 | unshow_buffer (w); |
d3d50620 DA |
4110 | unchain_marker (XMARKER (w->pointm)); |
4111 | unchain_marker (XMARKER (w->start)); | |
e8c17b81 | 4112 | wset_buffer (w, Qnil); |
bd99e242 RS |
4113 | } |
4114 | ||
d3d50620 | 4115 | if (NILP (s->prev) && NILP (s->next)) |
562dd5e9 MR |
4116 | /* A matrjoshka where SIBLING has become the only child of |
4117 | PARENT. */ | |
c32de52a | 4118 | { |
562dd5e9 MR |
4119 | /* Put SIBLING into PARENT's place. */ |
4120 | replace_window (parent, sibling, 0); | |
4121 | /* Have SIBLING inherit the following three slot values from | |
b6f67890 | 4122 | PARENT (the combination_limit slot is not inherited). */ |
e8c17b81 PE |
4123 | wset_normal_cols (s, p->normal_cols); |
4124 | wset_normal_lines (s, p->normal_lines); | |
562dd5e9 | 4125 | /* Mark PARENT as deleted. */ |
e8c17b81 PE |
4126 | wset_vchild (p, Qnil); |
4127 | wset_hchild (p, Qnil); | |
562dd5e9 MR |
4128 | /* Try to merge SIBLING into its new parent. */ |
4129 | recombine_windows (sibling); | |
c32de52a RS |
4130 | } |
4131 | ||
562dd5e9 MR |
4132 | adjust_glyphs (f); |
4133 | ||
4134 | if (!WINDOW_LIVE_P (FRAME_SELECTED_WINDOW (f))) | |
4135 | /* We deleted the frame's selected window. */ | |
0d384044 | 4136 | { |
562dd5e9 MR |
4137 | /* Use the frame's first window as fallback ... */ |
4138 | Lisp_Object new_selected_window = Fframe_first_window (frame); | |
4139 | /* ... but preferably use its most recently used window. */ | |
4140 | Lisp_Object mru_window; | |
0d384044 | 4141 | |
562dd5e9 MR |
4142 | /* `get-mru-window' might fail for some reason so play it safe |
4143 | - promote the first window _without recording it_ first. */ | |
4144 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
4145 | Fselect_window (new_selected_window, Qt); | |
4146 | else | |
f00af5b1 | 4147 | fset_selected_window (f, new_selected_window); |
0d384044 | 4148 | |
4d7e6e51 | 4149 | unblock_input (); |
0d384044 | 4150 | |
562dd5e9 MR |
4151 | /* Now look whether `get-mru-window' gets us something. */ |
4152 | mru_window = call1 (Qget_mru_window, frame); | |
4153 | if (WINDOW_LIVE_P (mru_window) | |
d3d50620 | 4154 | && EQ (XWINDOW (mru_window)->frame, frame)) |
562dd5e9 | 4155 | new_selected_window = mru_window; |
bd99e242 | 4156 | |
562dd5e9 MR |
4157 | /* If all ended up well, we now promote the mru window. */ |
4158 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
4159 | Fselect_window (new_selected_window, Qnil); | |
4160 | else | |
f00af5b1 | 4161 | fset_selected_window (f, new_selected_window); |
0d384044 RS |
4162 | } |
4163 | else | |
4d7e6e51 | 4164 | unblock_input (); |
0d384044 | 4165 | |
562dd5e9 MR |
4166 | /* Must be run by the caller: |
4167 | run_window_configuration_change_hook (f); */ | |
0d384044 | 4168 | } |
562dd5e9 MR |
4169 | else |
4170 | /* We failed: Relink WINDOW into window tree. */ | |
0d384044 | 4171 | { |
562dd5e9 MR |
4172 | if (before_sibling) |
4173 | { | |
e8c17b81 | 4174 | wset_prev (s, window); |
562dd5e9 | 4175 | if (horflag) |
e8c17b81 | 4176 | wset_hchild (p, window); |
562dd5e9 | 4177 | else |
e8c17b81 | 4178 | wset_vchild (p, window); |
562dd5e9 MR |
4179 | } |
4180 | else | |
4181 | { | |
e8c17b81 | 4182 | wset_next (s, window); |
d3d50620 | 4183 | if (!NILP (w->next)) |
e8c17b81 | 4184 | wset_prev (XWINDOW (w->next), window); |
562dd5e9 MR |
4185 | } |
4186 | error ("Deletion failed"); | |
0d384044 RS |
4187 | } |
4188 | ||
0d384044 RS |
4189 | return Qnil; |
4190 | } | |
f984d4fc GM |
4191 | \f |
4192 | /*********************************************************************** | |
4193 | Resizing Mini-Windows | |
4194 | ***********************************************************************/ | |
4195 | ||
562dd5e9 MR |
4196 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we |
4197 | can. */ | |
4198 | void | |
4199 | grow_mini_window (struct window *w, int delta) | |
f984d4fc | 4200 | { |
d3d50620 | 4201 | struct frame *f = XFRAME (w->frame); |
562dd5e9 MR |
4202 | struct window *r; |
4203 | Lisp_Object root, value; | |
f984d4fc | 4204 | |
a54e2c05 DA |
4205 | eassert (MINI_WINDOW_P (w)); |
4206 | eassert (delta >= 0); | |
f984d4fc | 4207 | |
562dd5e9 MR |
4208 | root = FRAME_ROOT_WINDOW (f); |
4209 | r = XWINDOW (root); | |
5386012d MR |
4210 | value = call2 (Qwindow_resize_root_window_vertically, |
4211 | root, make_number (- delta)); | |
d615d6d2 | 4212 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4213 | { |
4d7e6e51 | 4214 | block_input (); |
d615d6d2 | 4215 | window_resize_apply (r, 0); |
f984d4fc | 4216 | |
562dd5e9 | 4217 | /* Grow the mini-window. */ |
e8c17b81 PE |
4218 | wset_top_line |
4219 | (w, make_number (XFASTINT (r->top_line) + XFASTINT (r->total_lines))); | |
4220 | wset_total_lines | |
4221 | (w, make_number (XFASTINT (w->total_lines) - XINT (value))); | |
80b00b08 DA |
4222 | w->last_modified = 0; |
4223 | w->last_overlay_modified = 0; | |
f984d4fc | 4224 | |
dca778d5 | 4225 | windows_or_buffers_changed++; |
562dd5e9 | 4226 | adjust_glyphs (f); |
4d7e6e51 | 4227 | unblock_input (); |
f984d4fc GM |
4228 | } |
4229 | } | |
4230 | ||
4231 | ||
562dd5e9 MR |
4232 | /* Shrink mini-window W. */ |
4233 | void | |
4234 | shrink_mini_window (struct window *w) | |
f984d4fc | 4235 | { |
d3d50620 | 4236 | struct frame *f = XFRAME (w->frame); |
562dd5e9 MR |
4237 | struct window *r; |
4238 | Lisp_Object root, value; | |
4239 | EMACS_INT size; | |
43b4a21f | 4240 | |
a54e2c05 | 4241 | eassert (MINI_WINDOW_P (w)); |
177c0ea7 | 4242 | |
d3d50620 | 4243 | size = XINT (w->total_lines); |
562dd5e9 MR |
4244 | if (size > 1) |
4245 | { | |
4246 | root = FRAME_ROOT_WINDOW (f); | |
4247 | r = XWINDOW (root); | |
5386012d | 4248 | value = call2 (Qwindow_resize_root_window_vertically, |
562dd5e9 | 4249 | root, make_number (size - 1)); |
d615d6d2 | 4250 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4251 | { |
4d7e6e51 | 4252 | block_input (); |
d615d6d2 | 4253 | window_resize_apply (r, 0); |
43b4a21f | 4254 | |
562dd5e9 | 4255 | /* Shrink the mini-window. */ |
e8c17b81 PE |
4256 | wset_top_line (w, make_number (XFASTINT (r->top_line) |
4257 | + XFASTINT (r->total_lines))); | |
4258 | wset_total_lines (w, make_number (1)); | |
43b4a21f | 4259 | |
80b00b08 DA |
4260 | w->last_modified = 0; |
4261 | w->last_overlay_modified = 0; | |
43b4a21f | 4262 | |
dca778d5 | 4263 | windows_or_buffers_changed++; |
562dd5e9 | 4264 | adjust_glyphs (f); |
4d7e6e51 | 4265 | unblock_input (); |
f984d4fc | 4266 | } |
562dd5e9 MR |
4267 | /* If the above failed for whatever strange reason we must make a |
4268 | one window frame here. The same routine will be needed when | |
4269 | shrinking the frame (and probably when making the initial | |
4270 | *scratch* window). For the moment leave things as they are. */ | |
f984d4fc GM |
4271 | } |
4272 | } | |
4273 | ||
562dd5e9 MR |
4274 | DEFUN ("resize-mini-window-internal", Fresize_mini_window_internal, Sresize_mini_window_internal, 1, 1, 0, |
4275 | doc: /* Resize minibuffer window WINDOW. */) | |
4276 | (Lisp_Object window) | |
f984d4fc | 4277 | { |
562dd5e9 MR |
4278 | struct window *w = XWINDOW (window); |
4279 | struct window *r; | |
4280 | struct frame *f; | |
4281 | int height; | |
177c0ea7 | 4282 | |
562dd5e9 | 4283 | CHECK_WINDOW (window); |
d3d50620 | 4284 | f = XFRAME (w->frame); |
177c0ea7 | 4285 | |
d3d50620 | 4286 | if (!EQ (FRAME_MINIBUF_WINDOW (XFRAME (w->frame)), window)) |
562dd5e9 MR |
4287 | error ("Not a valid minibuffer window"); |
4288 | else if (FRAME_MINIBUF_ONLY_P (f)) | |
4289 | error ("Cannot resize a minibuffer-only frame"); | |
177c0ea7 | 4290 | |
562dd5e9 | 4291 | r = XWINDOW (FRAME_ROOT_WINDOW (f)); |
d3d50620 | 4292 | height = XINT (r->total_lines) + XINT (w->total_lines); |
d615d6d2 | 4293 | if (window_resize_check (r, 0) |
d3d50620 DA |
4294 | && XINT (w->new_total) > 0 |
4295 | && height == XINT (r->new_total) + XINT (w->new_total)) | |
f984d4fc | 4296 | { |
4d7e6e51 | 4297 | block_input (); |
d615d6d2 | 4298 | window_resize_apply (r, 0); |
f984d4fc | 4299 | |
e8c17b81 PE |
4300 | wset_total_lines (w, w->new_total); |
4301 | wset_top_line (w, make_number (XINT (r->top_line) | |
4302 | + XINT (r->total_lines))); | |
177c0ea7 | 4303 | |
562dd5e9 MR |
4304 | windows_or_buffers_changed++; |
4305 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
f984d4fc | 4306 | adjust_glyphs (f); |
4d7e6e51 | 4307 | unblock_input (); |
f984d4fc | 4308 | |
562dd5e9 MR |
4309 | run_window_configuration_change_hook (f); |
4310 | return Qt; | |
86c8e823 | 4311 | } |
562dd5e9 | 4312 | else error ("Failed to resize minibuffer window"); |
f984d4fc | 4313 | } |
562dd5e9 | 4314 | \f |
5500c422 GM |
4315 | /* Mark window cursors off for all windows in the window tree rooted |
4316 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4317 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4318 | the frame are cleared. */ | |
4319 | ||
4320 | void | |
971de7fb | 4321 | mark_window_cursors_off (struct window *w) |
5500c422 GM |
4322 | { |
4323 | while (w) | |
4324 | { | |
d3d50620 DA |
4325 | if (!NILP (w->hchild)) |
4326 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4327 | else if (!NILP (w->vchild)) | |
4328 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
5500c422 GM |
4329 | else |
4330 | w->phys_cursor_on_p = 0; | |
4331 | ||
d3d50620 | 4332 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
5500c422 GM |
4333 | } |
4334 | } | |
4335 | ||
4336 | ||
e9c195b1 | 4337 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4338 | |
4339 | int | |
971de7fb | 4340 | window_internal_height (struct window *w) |
7ab12479 | 4341 | { |
d3d50620 | 4342 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4343 | |
e9c195b1 GM |
4344 | if (!MINI_WINDOW_P (w)) |
4345 | { | |
d3d50620 DA |
4346 | if (!NILP (w->parent) |
4347 | || !NILP (w->vchild) | |
4348 | || !NILP (w->hchild) | |
4349 | || !NILP (w->next) | |
4350 | || !NILP (w->prev) | |
e9c195b1 GM |
4351 | || WINDOW_WANTS_MODELINE_P (w)) |
4352 | --ht; | |
7ab12479 | 4353 | |
e9c195b1 GM |
4354 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4355 | --ht; | |
4356 | } | |
7ab12479 JB |
4357 | |
4358 | return ht; | |
4359 | } | |
5500c422 GM |
4360 | \f |
4361 | /************************************************************************ | |
4362 | Window Scrolling | |
4363 | ***********************************************************************/ | |
535e0b8e | 4364 | |
5500c422 | 4365 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4366 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4367 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4368 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4369 | means don't signal an error if we try to move over BEGV or ZV, | |
4370 | respectively. */ | |
7ab12479 | 4371 | |
101d1605 | 4372 | static void |
d311d28c | 4373 | window_scroll (Lisp_Object window, EMACS_INT n, int whole, int noerror) |
5500c422 | 4374 | { |
cba59f77 | 4375 | immediate_quit = 1; |
d311d28c | 4376 | n = clip_to_bounds (INT_MIN, n, INT_MAX); |
cba59f77 | 4377 | |
5500c422 GM |
4378 | /* If we must, use the pixel-based version which is much slower than |
4379 | the line-based one but can handle varying line heights. */ | |
d3d50620 | 4380 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) |
5500c422 GM |
4381 | window_scroll_pixel_based (window, n, whole, noerror); |
4382 | else | |
4383 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4384 | |
4385 | immediate_quit = 0; | |
5500c422 GM |
4386 | } |
4387 | ||
4388 | ||
4389 | /* Implementation of window_scroll that works based on pixel line | |
4390 | heights. See the comment of window_scroll for parameter | |
4391 | descriptions. */ | |
4392 | ||
4393 | static void | |
971de7fb | 4394 | window_scroll_pixel_based (Lisp_Object window, int n, int whole, int noerror) |
5500c422 GM |
4395 | { |
4396 | struct it it; | |
4397 | struct window *w = XWINDOW (window); | |
4398 | struct text_pos start; | |
5500c422 | 4399 | int this_scroll_margin; |
9d14503e | 4400 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5cdb3cf3 | 4401 | int vscrolled = 0; |
5a857365 | 4402 | int x, y, rtop, rbot, rowh, vpos; |
57b3e30b | 4403 | void *itdata = NULL; |
5500c422 | 4404 | |
d3d50620 | 4405 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
f0ee99a0 EZ |
4406 | /* Scrolling a minibuffer window via scroll bar when the echo area |
4407 | shows long text sometimes resets the minibuffer contents behind | |
4408 | our backs. */ | |
4409 | if (CHARPOS (start) > ZV) | |
4410 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
177c0ea7 | 4411 | |
5500c422 | 4412 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4413 | the screen. Allow PT to be partially visible, otherwise |
4414 | something like (scroll-down 1) with PT in the line before | |
4415 | the partially visible one would recenter. */ | |
5a857365 KS |
4416 | |
4417 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 | 4418 | { |
57b3e30b | 4419 | itdata = bidi_shelve_cache (); |
5500c422 GM |
4420 | /* Move backward half the height of the window. Performance note: |
4421 | vmotion used here is about 10% faster, but would give wrong | |
4422 | results for variable height lines. */ | |
4423 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4424 | it.current_y = it.last_visible_y; | |
f204989e | 4425 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4426 | |
5500c422 GM |
4427 | /* The function move_iterator_vertically may move over more than |
4428 | the specified y-distance. If it->w is small, e.g. a | |
4429 | mini-buffer window, we may end up in front of the window's | |
4430 | display area. This is the case when Start displaying at the | |
4431 | start of the line containing PT in this case. */ | |
4432 | if (it.current_y <= 0) | |
4433 | { | |
4434 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4435 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4436 | it.current_y = 0; |
4437 | } | |
4438 | ||
4439 | start = it.current.pos; | |
35928349 | 4440 | bidi_unshelve_cache (itdata, 0); |
5500c422 | 4441 | } |
e56263e5 KS |
4442 | else if (auto_window_vscroll_p) |
4443 | { | |
5a857365 | 4444 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
4445 | { |
4446 | int px; | |
4447 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4448 | if (whole) | |
e856c216 KS |
4449 | dy = max ((window_box_height (w) |
4450 | - next_screen_context_lines * dy), | |
4451 | dy); | |
e56263e5 KS |
4452 | dy *= n; |
4453 | ||
5a857365 | 4454 | if (n < 0) |
e56263e5 | 4455 | { |
5a857365 KS |
4456 | /* Only vscroll backwards if already vscrolled forwards. */ |
4457 | if (w->vscroll < 0 && rtop > 0) | |
4458 | { | |
4459 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
4460 | Fset_window_vscroll (window, make_number (px), Qt); | |
4461 | return; | |
4462 | } | |
e56263e5 | 4463 | } |
5a857365 | 4464 | if (n > 0) |
e56263e5 | 4465 | { |
5a857365 KS |
4466 | /* Do vscroll if already vscrolled or only display line. */ |
4467 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
4468 | { | |
4469 | px = max (0, -w->vscroll + min (rbot, dy)); | |
4470 | Fset_window_vscroll (window, make_number (px), Qt); | |
4471 | return; | |
4472 | } | |
4473 | ||
4474 | /* Maybe modify window start instead of scrolling. */ | |
4475 | if (rbot > 0 || w->vscroll < 0) | |
4476 | { | |
d311d28c | 4477 | ptrdiff_t spos; |
5a857365 KS |
4478 | |
4479 | Fset_window_vscroll (window, make_number (0), Qt); | |
4480 | /* If there are other text lines above the current row, | |
4481 | move window start to current row. Else to next row. */ | |
4482 | if (rbot > 0) | |
4483 | spos = XINT (Fline_beginning_position (Qnil)); | |
4484 | else | |
4485 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
d3d50620 DA |
4486 | set_marker_restricted (w->start, make_number (spos), |
4487 | w->buffer); | |
c98ff5dd DA |
4488 | w->start_at_line_beg = 1; |
4489 | w->update_mode_line = 1; | |
80b00b08 DA |
4490 | w->last_modified = 0; |
4491 | w->last_overlay_modified = 0; | |
5a857365 KS |
4492 | /* Set force_start so that redisplay_window will run the |
4493 | window-scroll-functions. */ | |
c98ff5dd | 4494 | w->force_start = 1; |
5a857365 KS |
4495 | return; |
4496 | } | |
e56263e5 KS |
4497 | } |
4498 | } | |
5a857365 | 4499 | /* Cancel previous vscroll. */ |
e56263e5 KS |
4500 | Fset_window_vscroll (window, make_number (0), Qt); |
4501 | } | |
5500c422 | 4502 | |
57b3e30b | 4503 | itdata = bidi_shelve_cache (); |
d0c38d63 | 4504 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
4505 | point in the same window line as it is now, so get that line. */ |
4506 | if (!NILP (Vscroll_preserve_screen_position)) | |
4507 | { | |
c525d842 | 4508 | /* We preserve the goal pixel coordinate across consecutive |
a4b000fb JL |
4509 | calls to scroll-up, scroll-down and other commands that |
4510 | have the `scroll-command' property. This avoids the | |
c525d842 CY |
4511 | possibility of point becoming "stuck" on a tall line when |
4512 | scrolling by one line. */ | |
66fe93d1 | 4513 | if (window_scroll_pixel_based_preserve_y < 0 |
1344aad4 TT |
4514 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4515 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c525d842 CY |
4516 | { |
4517 | start_display (&it, w, start); | |
4518 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 4519 | window_scroll_pixel_based_preserve_y = it.current_y; |
c876b227 | 4520 | window_scroll_pixel_based_preserve_x = it.current_x; |
c525d842 | 4521 | } |
5500c422 GM |
4522 | } |
4523 | else | |
c876b227 SM |
4524 | window_scroll_pixel_based_preserve_y |
4525 | = window_scroll_pixel_based_preserve_x = -1; | |
5500c422 GM |
4526 | |
4527 | /* Move iterator it from start the specified distance forward or | |
4528 | backward. The result is the new window start. */ | |
4529 | start_display (&it, w, start); | |
4530 | if (whole) | |
4531 | { | |
d311d28c | 4532 | ptrdiff_t start_pos = IT_CHARPOS (it); |
e856c216 KS |
4533 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); |
4534 | dy = max ((window_box_height (w) | |
4535 | - next_screen_context_lines * dy), | |
4536 | dy) * n; | |
d72340d4 GM |
4537 | |
4538 | /* Note that move_it_vertically always moves the iterator to the | |
4539 | start of a line. So, if the last line doesn't have a newline, | |
4540 | we would end up at the start of the line ending at ZV. */ | |
4541 | if (dy <= 0) | |
e856c216 KS |
4542 | { |
4543 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 4544 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
4545 | looking at an image that is taller that the window height. */ |
4546 | while (start_pos == IT_CHARPOS (it) | |
4547 | && start_pos > BEGV) | |
e4cc2dfc | 4548 | move_it_by_lines (&it, -1); |
e856c216 | 4549 | } |
d72340d4 | 4550 | else if (dy > 0) |
bed83ee4 | 4551 | { |
bed83ee4 KS |
4552 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
4553 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 4554 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
4555 | looking at an image that is taller that the window height. */ |
4556 | while (start_pos == IT_CHARPOS (it) | |
4557 | && start_pos < ZV) | |
e4cc2dfc | 4558 | move_it_by_lines (&it, 1); |
bed83ee4 | 4559 | } |
5500c422 GM |
4560 | } |
4561 | else | |
e4cc2dfc | 4562 | move_it_by_lines (&it, n); |
5500c422 | 4563 | |
96ae58c8 RS |
4564 | /* We failed if we find ZV is already on the screen (scrolling up, |
4565 | means there's nothing past the end), or if we can't start any | |
4566 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 4567 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 4568 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 4569 | { |
5cdb3cf3 MB |
4570 | if (IT_CHARPOS (it) == ZV) |
4571 | { | |
07ce8b53 RS |
4572 | if (it.current_y < it.last_visible_y |
4573 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 4574 | > it.last_visible_y)) |
a74eca50 GM |
4575 | { |
4576 | /* The last line was only partially visible, make it fully | |
4577 | visible. */ | |
4578 | w->vscroll = (it.last_visible_y | |
4579 | - it.current_y + it.max_ascent + it.max_descent); | |
4580 | adjust_glyphs (it.f); | |
4581 | } | |
5cdb3cf3 | 4582 | else |
57b3e30b | 4583 | { |
35928349 | 4584 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
4585 | if (noerror) |
4586 | return; | |
4587 | else if (n < 0) /* could happen with empty buffers */ | |
4588 | xsignal0 (Qbeginning_of_buffer); | |
4589 | else | |
4590 | xsignal0 (Qend_of_buffer); | |
4591 | } | |
5cdb3cf3 | 4592 | } |
5500c422 | 4593 | else |
5cdb3cf3 MB |
4594 | { |
4595 | if (w->vscroll != 0) | |
4596 | /* The first line was only partially visible, make it fully | |
4597 | visible. */ | |
4598 | w->vscroll = 0; | |
5cdb3cf3 | 4599 | else |
57b3e30b | 4600 | { |
35928349 | 4601 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
4602 | if (noerror) |
4603 | return; | |
4604 | else | |
4605 | xsignal0 (Qbeginning_of_buffer); | |
4606 | } | |
5cdb3cf3 MB |
4607 | } |
4608 | ||
4609 | /* If control gets here, then we vscrolled. */ | |
4610 | ||
d3d50620 | 4611 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
5cdb3cf3 MB |
4612 | |
4613 | /* Don't try to change the window start below. */ | |
4614 | vscrolled = 1; | |
5500c422 GM |
4615 | } |
4616 | ||
5cdb3cf3 MB |
4617 | if (! vscrolled) |
4618 | { | |
d311d28c PE |
4619 | ptrdiff_t pos = IT_CHARPOS (it); |
4620 | ptrdiff_t bytepos; | |
e68def1e AS |
4621 | |
4622 | /* If in the middle of a multi-glyph character move forward to | |
4623 | the next character. */ | |
4624 | if (in_display_vector_p (&it)) | |
4625 | { | |
4626 | ++pos; | |
4627 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
4628 | } | |
4629 | ||
5cdb3cf3 | 4630 | /* Set the window start, and set up the window for redisplay. */ |
d3d50620 DA |
4631 | set_marker_restricted (w->start, make_number (pos), |
4632 | w->buffer); | |
4c1acb95 | 4633 | bytepos = marker_byte_position (w->start); |
c98ff5dd DA |
4634 | w->start_at_line_beg = (pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n'); |
4635 | w->update_mode_line = 1; | |
80b00b08 DA |
4636 | w->last_modified = 0; |
4637 | w->last_overlay_modified = 0; | |
5cdb3cf3 MB |
4638 | /* Set force_start so that redisplay_window will run the |
4639 | window-scroll-functions. */ | |
c98ff5dd | 4640 | w->force_start = 1; |
5cdb3cf3 | 4641 | } |
177c0ea7 | 4642 | |
dc297565 RS |
4643 | /* The rest of this function uses current_y in a nonstandard way, |
4644 | not including the height of the header line if any. */ | |
5500c422 | 4645 | it.current_y = it.vpos = 0; |
177c0ea7 | 4646 | |
940f53e5 RS |
4647 | /* Move PT out of scroll margins. |
4648 | This code wants current_y to be zero at the window start position | |
4649 | even if there is a header line. */ | |
4650 | this_scroll_margin = max (0, scroll_margin); | |
3a45383a | 4651 | this_scroll_margin |
d3d50620 | 4652 | = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); |
940f53e5 RS |
4653 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); |
4654 | ||
4655 | if (n > 0) | |
5500c422 | 4656 | { |
940f53e5 RS |
4657 | /* We moved the window start towards ZV, so PT may be now |
4658 | in the scroll margin at the top. */ | |
4659 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
4660 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
4661 | && (NILP (Vscroll_preserve_screen_position) | |
4662 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4663 | /* We found PT at a legitimate height. Leave it alone. */ |
4664 | ; | |
66fe93d1 | 4665 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4666 | { |
fa3c3426 RS |
4667 | /* If we have a header line, take account of it. |
4668 | This is necessary because we set it.current_y to 0, above. */ | |
c876b227 SM |
4669 | move_it_to (&it, -1, |
4670 | window_scroll_pixel_based_preserve_x, | |
66fe93d1 LT |
4671 | window_scroll_pixel_based_preserve_y |
4672 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c876b227 | 4673 | -1, MOVE_TO_Y | MOVE_TO_X); |
940f53e5 RS |
4674 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4675 | } | |
4676 | else | |
5500c422 | 4677 | { |
5500c422 | 4678 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
4679 | { |
4680 | int prev = it.current_y; | |
e4cc2dfc | 4681 | move_it_by_lines (&it, 1); |
e9b2c961 RS |
4682 | if (prev == it.current_y) |
4683 | break; | |
4684 | } | |
5500c422 GM |
4685 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4686 | } | |
940f53e5 RS |
4687 | } |
4688 | else if (n < 0) | |
4689 | { | |
d311d28c | 4690 | ptrdiff_t charpos, bytepos; |
aed328bf | 4691 | int partial_p; |
940f53e5 | 4692 | |
66fe93d1 LT |
4693 | /* Save our position, for the |
4694 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
4695 | charpos = IT_CHARPOS (it); |
4696 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 4697 | |
940f53e5 RS |
4698 | /* We moved the window start towards BEGV, so PT may be now |
4699 | in the scroll margin at the bottom. */ | |
4700 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
4701 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
4702 | - this_scroll_margin - 1), | |
4703 | -1, | |
940f53e5 RS |
4704 | MOVE_TO_POS | MOVE_TO_Y); |
4705 | ||
aed328bf KS |
4706 | /* Save our position, in case it's correct. */ |
4707 | charpos = IT_CHARPOS (it); | |
4708 | bytepos = IT_BYTEPOS (it); | |
4709 | ||
4710 | /* See if point is on a partially visible line at the end. */ | |
4711 | if (it.what == IT_EOB) | |
4712 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
4713 | else | |
4714 | { | |
e4cc2dfc | 4715 | move_it_by_lines (&it, 1); |
aed328bf KS |
4716 | partial_p = it.current_y > it.last_visible_y; |
4717 | } | |
4718 | ||
bdf4ec93 RS |
4719 | if (charpos == PT && !partial_p |
4720 | && (NILP (Vscroll_preserve_screen_position) | |
4721 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4722 | /* We found PT before we found the display margin, so PT is ok. */ |
4723 | ; | |
66fe93d1 | 4724 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4725 | { |
d3d50620 | 4726 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
940f53e5 | 4727 | start_display (&it, w, start); |
c525d842 CY |
4728 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
4729 | here because we called start_display again and did not | |
4730 | alter it.current_y this time. */ | |
c876b227 SM |
4731 | move_it_to (&it, -1, window_scroll_pixel_based_preserve_x, |
4732 | window_scroll_pixel_based_preserve_y, -1, | |
4733 | MOVE_TO_Y | MOVE_TO_X); | |
940f53e5 RS |
4734 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4735 | } | |
4736 | else | |
4737 | { | |
aed328bf | 4738 | if (partial_p) |
5cdb3cf3 MB |
4739 | /* The last line was only partially visible, so back up two |
4740 | lines to make sure we're on a fully visible line. */ | |
4741 | { | |
e4cc2dfc | 4742 | move_it_by_lines (&it, -2); |
5cdb3cf3 MB |
4743 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4744 | } | |
4745 | else | |
4746 | /* No, the position we saved is OK, so use it. */ | |
4747 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
4748 | } |
4749 | } | |
35928349 | 4750 | bidi_unshelve_cache (itdata, 0); |
5500c422 GM |
4751 | } |
4752 | ||
4753 | ||
4754 | /* Implementation of window_scroll that works based on screen lines. | |
4755 | See the comment of window_scroll for parameter descriptions. */ | |
4756 | ||
4757 | static void | |
971de7fb | 4758 | window_scroll_line_based (Lisp_Object window, int n, int whole, int noerror) |
7ab12479 JB |
4759 | { |
4760 | register struct window *w = XWINDOW (window); | |
03ab8921 EZ |
4761 | /* Fvertical_motion enters redisplay, which can trigger |
4762 | fontification, which in turn can modify buffer text (e.g., if the | |
4763 | fontification functions replace escape sequences with faces, as | |
4764 | in `grep-mode-font-lock-keywords'). So we use a marker to record | |
4765 | the old point position, to prevent crashes in SET_PT_BOTH. */ | |
4766 | Lisp_Object opoint_marker = Fpoint_marker (); | |
d311d28c | 4767 | register ptrdiff_t pos, pos_byte; |
7ab12479 JB |
4768 | register int ht = window_internal_height (w); |
4769 | register Lisp_Object tem; | |
4770 | int lose; | |
5500c422 | 4771 | Lisp_Object bolp; |
d311d28c | 4772 | ptrdiff_t startpos; |
c876b227 | 4773 | Lisp_Object original_pos = Qnil; |
101d1605 | 4774 | |
d4e7cf01 GM |
4775 | /* If scrolling screen-fulls, compute the number of lines to |
4776 | scroll from the window's height. */ | |
4777 | if (whole) | |
4778 | n *= max (1, ht - next_screen_context_lines); | |
4779 | ||
d3d50620 | 4780 | startpos = marker_position (w->start); |
101d1605 | 4781 | |
c876b227 SM |
4782 | if (!NILP (Vscroll_preserve_screen_position)) |
4783 | { | |
4784 | if (window_scroll_preserve_vpos <= 0 | |
1344aad4 TT |
4785 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4786 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c876b227 SM |
4787 | { |
4788 | struct position posit | |
4789 | = *compute_motion (startpos, 0, 0, 0, | |
4790 | PT, ht, 0, | |
80b00b08 | 4791 | -1, w->hscroll, |
c876b227 SM |
4792 | 0, w); |
4793 | window_scroll_preserve_vpos = posit.vpos; | |
80b00b08 | 4794 | window_scroll_preserve_hpos = posit.hpos + w->hscroll; |
c876b227 SM |
4795 | } |
4796 | ||
4797 | original_pos = Fcons (make_number (window_scroll_preserve_hpos), | |
4798 | make_number (window_scroll_preserve_vpos)); | |
4799 | } | |
0a1f771a | 4800 | |
d834a2e9 | 4801 | XSETFASTINT (tem, PT); |
6ffdb539 | 4802 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 4803 | |
265a9e55 | 4804 | if (NILP (tem)) |
7ab12479 | 4805 | { |
cd2be1dd | 4806 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 4807 | startpos = PT; |
7ab12479 JB |
4808 | } |
4809 | ||
345d45b2 | 4810 | SET_PT (startpos); |
5ce7b543 | 4811 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 4812 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 4813 | pos = PT; |
b73ea88e | 4814 | pos_byte = PT_BYTE; |
7ab12479 | 4815 | bolp = Fbolp (); |
03ab8921 EZ |
4816 | SET_PT_BOTH (marker_position (opoint_marker), |
4817 | marker_byte_position (opoint_marker)); | |
7ab12479 JB |
4818 | |
4819 | if (lose) | |
f8026fd8 JB |
4820 | { |
4821 | if (noerror) | |
4822 | return; | |
4823 | else | |
ba96a5cf | 4824 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 4825 | } |
7ab12479 JB |
4826 | |
4827 | if (pos < ZV) | |
7ab12479 | 4828 | { |
0c7da84e | 4829 | /* Don't use a scroll margin that is negative or too large. */ |
71f02bc5 | 4830 | int this_scroll_margin = |
d3d50620 | 4831 | max (0, min (scroll_margin, XINT (w->total_lines) / 4)); |
0c7da84e | 4832 | |
d3d50620 | 4833 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
c98ff5dd DA |
4834 | w->start_at_line_beg = !NILP (bolp); |
4835 | w->update_mode_line = 1; | |
80b00b08 DA |
4836 | w->last_modified = 0; |
4837 | w->last_overlay_modified = 0; | |
345d45b2 RS |
4838 | /* Set force_start so that redisplay_window will run |
4839 | the window-scroll-functions. */ | |
c98ff5dd | 4840 | w->force_start = 1; |
0c7da84e | 4841 | |
bdf4ec93 RS |
4842 | if (!NILP (Vscroll_preserve_screen_position) |
4843 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 4844 | { |
b73ea88e | 4845 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4846 | Fvertical_motion (original_pos, window); |
0c7da84e | 4847 | } |
101d1605 RS |
4848 | /* If we scrolled forward, put point enough lines down |
4849 | that it is outside the scroll margin. */ | |
4850 | else if (n > 0) | |
0c7da84e | 4851 | { |
101d1605 RS |
4852 | int top_margin; |
4853 | ||
4854 | if (this_scroll_margin > 0) | |
4855 | { | |
b73ea88e | 4856 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4857 | Fvertical_motion (make_number (this_scroll_margin), window); |
4858 | top_margin = PT; | |
4859 | } | |
4860 | else | |
4861 | top_margin = pos; | |
4862 | ||
03ab8921 EZ |
4863 | if (top_margin <= marker_position (opoint_marker)) |
4864 | SET_PT_BOTH (marker_position (opoint_marker), | |
4865 | marker_byte_position (opoint_marker)); | |
5500c422 | 4866 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 4867 | { |
b73ea88e | 4868 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4869 | Fvertical_motion (original_pos, window); |
101d1605 | 4870 | } |
9317a85d | 4871 | else |
335406fc | 4872 | SET_PT (top_margin); |
0c7da84e | 4873 | } |
101d1605 | 4874 | else if (n < 0) |
7ab12479 | 4875 | { |
101d1605 RS |
4876 | int bottom_margin; |
4877 | ||
0c7da84e RS |
4878 | /* If we scrolled backward, put point near the end of the window |
4879 | but not within the scroll margin. */ | |
b73ea88e | 4880 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 4881 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
4882 | if (XFASTINT (tem) == ht - this_scroll_margin) |
4883 | bottom_margin = PT; | |
4884 | else | |
4885 | bottom_margin = PT + 1; | |
4886 | ||
03ab8921 EZ |
4887 | if (bottom_margin > marker_position (opoint_marker)) |
4888 | SET_PT_BOTH (marker_position (opoint_marker), | |
4889 | marker_byte_position (opoint_marker)); | |
7ab12479 | 4890 | else |
101d1605 | 4891 | { |
5500c422 | 4892 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 4893 | { |
b73ea88e | 4894 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4895 | Fvertical_motion (original_pos, window); |
9317a85d RS |
4896 | } |
4897 | else | |
4898 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 4899 | } |
7ab12479 JB |
4900 | } |
4901 | } | |
4902 | else | |
f8026fd8 JB |
4903 | { |
4904 | if (noerror) | |
4905 | return; | |
4906 | else | |
ba96a5cf | 4907 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 4908 | } |
7ab12479 | 4909 | } |
5500c422 GM |
4910 | |
4911 | ||
4912 | /* Scroll selected_window up or down. If N is nil, scroll a | |
4913 | screen-full which is defined as the height of the window minus | |
4914 | next_screen_context_lines. If N is the symbol `-', scroll. | |
4915 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
4916 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
4917 | |
4918 | static void | |
971de7fb | 4919 | scroll_command (Lisp_Object n, int direction) |
7ab12479 | 4920 | { |
d311d28c | 4921 | ptrdiff_t count = SPECPDL_INDEX (); |
7ab12479 | 4922 | |
a54e2c05 | 4923 | eassert (eabs (direction) == 1); |
5500c422 GM |
4924 | |
4925 | /* If selected window's buffer isn't current, make it current for | |
4926 | the moment. But don't screw up if window_scroll gets an error. */ | |
d3d50620 | 4927 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
4928 | { |
4929 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
d3d50620 | 4930 | Fset_buffer (XWINDOW (selected_window)->buffer); |
5500c422 GM |
4931 | |
4932 | /* Make redisplay consider other windows than just selected_window. */ | |
4933 | ++windows_or_buffers_changed; | |
95605e15 | 4934 | } |
7ab12479 | 4935 | |
265a9e55 | 4936 | if (NILP (n)) |
d4e7cf01 | 4937 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 4938 | else if (EQ (n, Qminus)) |
d4e7cf01 | 4939 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
4940 | else |
4941 | { | |
4942 | n = Fprefix_numeric_value (n); | |
101d1605 | 4943 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 4944 | } |
95605e15 JB |
4945 | |
4946 | unbind_to (count, Qnil); | |
7ab12479 JB |
4947 | } |
4948 | ||
e0965597 | 4949 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
12bb3111 | 4950 | doc: /* Scroll text of selected window upward ARG lines. |
a0a37a6f | 4951 | If ARG is omitted or nil, scroll upward by a near full screen. |
fdb82f93 PJ |
4952 | A near full screen is `next-screen-context-lines' less than a full screen. |
4953 | Negative ARG means scroll downward. | |
4954 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4955 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4956 | (Lisp_Object arg) |
7ab12479 | 4957 | { |
413430c5 | 4958 | scroll_command (arg, 1); |
7ab12479 JB |
4959 | return Qnil; |
4960 | } | |
4961 | ||
e0965597 | 4962 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
12bb3111 | 4963 | doc: /* Scroll text of selected window down ARG lines. |
a0a37a6f | 4964 | If ARG is omitted or nil, scroll down by a near full screen. |
fdb82f93 PJ |
4965 | A near full screen is `next-screen-context-lines' less than a full screen. |
4966 | Negative ARG means scroll upward. | |
4967 | If ARG is the atom `-', scroll upward by nearly full screen. | |
4968 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4969 | (Lisp_Object arg) |
7ab12479 | 4970 | { |
413430c5 | 4971 | scroll_command (arg, -1); |
7ab12479 JB |
4972 | return Qnil; |
4973 | } | |
ccd0664b RS |
4974 | \f |
4975 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 4976 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 4977 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
4978 | showing that buffer is used. |
4979 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4980 | specifies the window. This takes precedence over | |
4981 | `other-window-scroll-buffer'. */) | |
5842a27b | 4982 | (void) |
7ab12479 | 4983 | { |
ccd0664b | 4984 | Lisp_Object window; |
7ab12479 JB |
4985 | |
4986 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 4987 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
4988 | window = Vminibuf_scroll_window; |
4989 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 4990 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
4991 | { |
4992 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 4993 | if (NILP (window)) |
87478b52 | 4994 | window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
4995 | } |
4996 | else | |
dbc4e1c1 JB |
4997 | { |
4998 | /* Nothing specified; look for a neighboring window on the same | |
4999 | frame. */ | |
5000 | window = Fnext_window (selected_window, Qnil, Qnil); | |
5001 | ||
5002 | if (EQ (window, selected_window)) | |
5003 | /* That didn't get us anywhere; look for a window on another | |
5004 | visible frame. */ | |
5005 | do | |
5006 | window = Fnext_window (window, Qnil, Qt); | |
5007 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
5008 | && ! EQ (window, selected_window)); | |
5009 | } | |
5010 | ||
b7826503 | 5011 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
5012 | |
5013 | if (EQ (window, selected_window)) | |
5014 | error ("There is no other window"); | |
5015 | ||
ccd0664b RS |
5016 | return window; |
5017 | } | |
5018 | ||
5019 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
5020 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
5021 | A near full screen is `next-screen-context-lines' less than a full screen. | |
5022 | The next window is the one below the current one; or the one at the top | |
5023 | if the current one is at the bottom. Negative ARG means scroll downward. | |
5024 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5025 | When calling from a program, supply as argument a number, nil, or `-'. | |
5026 | ||
fdb82f93 | 5027 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5028 | showing that buffer, popping the buffer up if necessary. |
5029 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5030 | specifies the window to scroll. This takes precedence over | |
5031 | `other-window-scroll-buffer'. */) | |
5842a27b | 5032 | (Lisp_Object arg) |
ccd0664b | 5033 | { |
d4e7cf01 GM |
5034 | Lisp_Object window; |
5035 | struct window *w; | |
d311d28c | 5036 | ptrdiff_t count = SPECPDL_INDEX (); |
ccd0664b RS |
5037 | |
5038 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5039 | w = XWINDOW (window); |
7ab12479 JB |
5040 | |
5041 | /* Don't screw up if window_scroll gets an error. */ | |
5042 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5043 | ++windows_or_buffers_changed; |
7ab12479 | 5044 | |
d3d50620 DA |
5045 | Fset_buffer (w->buffer); |
5046 | SET_PT (marker_position (w->pointm)); | |
7ab12479 | 5047 | |
413430c5 | 5048 | if (NILP (arg)) |
d4e7cf01 | 5049 | window_scroll (window, 1, 1, 1); |
413430c5 | 5050 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5051 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5052 | else |
5053 | { | |
413430c5 | 5054 | if (CONSP (arg)) |
7d7bbefd | 5055 | arg = XCAR (arg); |
b7826503 | 5056 | CHECK_NUMBER (arg); |
101d1605 | 5057 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5058 | } |
5059 | ||
d3d50620 | 5060 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5061 | unbind_to (count, Qnil); |
7ab12479 JB |
5062 | |
5063 | return Qnil; | |
5064 | } | |
5065 | \f | |
e0965597 | 5066 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 5067 | doc: /* Scroll selected window display ARG columns left. |
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); |
c67fa410 | 5082 | |
dc297565 | 5083 | if (!NILP (set_minimum)) |
c67fa410 GM |
5084 | w->min_hscroll = w->hscroll; |
5085 | ||
5086 | return result; | |
7ab12479 JB |
5087 | } |
5088 | ||
e0965597 | 5089 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 5090 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5091 | Default for ARG is window width minus 2. |
5092 | Value is the total amount of leftward horizontal scrolling in | |
5093 | effect after the change. | |
23fe745a | 5094 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5095 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5096 | will not scroll a window to a column less than the value returned |
dc297565 | 5097 | by this function. This happens in an interactive call. */) |
5842a27b | 5098 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 5099 | { |
c67fa410 | 5100 | struct window *w = XWINDOW (selected_window); |
aa754e6a PE |
5101 | EMACS_INT requested_arg = (NILP (arg) |
5102 | ? window_body_cols (w) - 2 | |
5103 | : XINT (Fprefix_numeric_value (arg))); | |
24a212eb | 5104 | Lisp_Object result = set_window_hscroll (w, w->hscroll - requested_arg); |
177c0ea7 | 5105 | |
dc297565 | 5106 | if (!NILP (set_minimum)) |
c67fa410 GM |
5107 | w->min_hscroll = w->hscroll; |
5108 | ||
5109 | return result; | |
7ab12479 JB |
5110 | } |
5111 | ||
fa832261 KS |
5112 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5113 | doc: /* Return the window which was selected when entering the minibuffer. | |
12bb3111 | 5114 | Returns nil, if selected window is not a minibuffer window. */) |
5842a27b | 5115 | (void) |
fa832261 KS |
5116 | { |
5117 | if (minibuf_level > 0 | |
5118 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5119 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5120 | return minibuf_selected_window; | |
5121 | ||
5122 | return Qnil; | |
5123 | } | |
5124 | ||
12c8b416 GM |
5125 | /* Value is the number of lines actually displayed in window W, |
5126 | as opposed to its height. */ | |
5127 | ||
5128 | static int | |
971de7fb | 5129 | displayed_window_lines (struct window *w) |
12c8b416 GM |
5130 | { |
5131 | struct it it; | |
5132 | struct text_pos start; | |
4c1acb95 | 5133 | ptrdiff_t charpos = marker_position (w->start); |
12c8b416 GM |
5134 | int height = window_box_height (w); |
5135 | struct buffer *old_buffer; | |
5136 | int bottom_y; | |
57b3e30b | 5137 | void *itdata = NULL; |
12c8b416 | 5138 | |
d3d50620 | 5139 | if (XBUFFER (w->buffer) != current_buffer) |
12c8b416 GM |
5140 | { |
5141 | old_buffer = current_buffer; | |
d3d50620 | 5142 | set_buffer_internal (XBUFFER (w->buffer)); |
12c8b416 GM |
5143 | } |
5144 | else | |
5145 | old_buffer = NULL; | |
5146 | ||
521b203e GM |
5147 | /* In case W->start is out of the accessible range, do something |
5148 | reasonable. This happens in Info mode when Info-scroll-down | |
5149 | calls (recenter -1) while W->start is 1. */ | |
4c1acb95 | 5150 | if (charpos < BEGV) |
521b203e | 5151 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); |
4c1acb95 | 5152 | else if (charpos > ZV) |
521b203e GM |
5153 | SET_TEXT_POS (start, ZV, ZV_BYTE); |
5154 | else | |
d3d50620 | 5155 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
521b203e | 5156 | |
57b3e30b | 5157 | itdata = bidi_shelve_cache (); |
12c8b416 GM |
5158 | start_display (&it, w, start); |
5159 | move_it_vertically (&it, height); | |
c8bc6f65 | 5160 | bottom_y = line_bottom_y (&it); |
35928349 | 5161 | bidi_unshelve_cache (itdata, 0); |
12c8b416 | 5162 | |
1de65f51 RS |
5163 | /* rms: On a non-window display, |
5164 | the value of it.vpos at the bottom of the screen | |
5165 | seems to be 1 larger than window_box_height (w). | |
5166 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5167 | when ZV is on the last screen line | |
5168 | moves to the previous screen line instead of the last one. */ | |
d3d50620 | 5169 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) |
1de65f51 RS |
5170 | height++; |
5171 | ||
12c8b416 GM |
5172 | /* Add in empty lines at the bottom of the window. */ |
5173 | if (bottom_y < height) | |
5174 | { | |
949cf20f | 5175 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5176 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5177 | } |
5178 | ||
c8bc6f65 GM |
5179 | if (old_buffer) |
5180 | set_buffer_internal (old_buffer); | |
5181 | ||
12c8b416 GM |
5182 | return it.vpos; |
5183 | } | |
5184 | ||
5185 | ||
a7ca3326 | 5186 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
666e158e | 5187 | doc: /* Center point in selected window and maybe redisplay frame. |
fdb82f93 | 5188 | With prefix argument ARG, recenter putting point on screen line ARG |
12bb3111 | 5189 | relative to the selected window. If ARG is negative, it counts up from the |
fdb82f93 PJ |
5190 | bottom of the window. (ARG should be less than the height of the window.) |
5191 | ||
666e158e MB |
5192 | If ARG is omitted or nil, then recenter with point on the middle line of |
5193 | the selected window; if the variable `recenter-redisplay' is non-nil, | |
5194 | also erase the entire frame and redraw it (when `auto-resize-tool-bars' | |
5195 | is set to `grow-only', this resets the tool-bar's height to the minimum | |
5196 | height needed); if `recenter-redisplay' has the special value `tty', | |
53524d93 | 5197 | then only tty frames are redrawn. |
7d1d98ee | 5198 | |
fdb82f93 PJ |
5199 | Just C-u as prefix means put point in the center of the window |
5200 | and redisplay normally--don't erase and redraw the frame. */) | |
5842a27b | 5201 | (register Lisp_Object arg) |
7ab12479 | 5202 | { |
6df47b59 | 5203 | struct window *w = XWINDOW (selected_window); |
d3d50620 | 5204 | struct buffer *buf = XBUFFER (w->buffer); |
478292ed | 5205 | struct buffer *obuf = current_buffer; |
6df47b59 | 5206 | int center_p = 0; |
d311d28c | 5207 | ptrdiff_t charpos, bytepos; |
71f02bc5 | 5208 | EMACS_INT iarg IF_LINT (= 0); |
f6b43440 | 5209 | int this_scroll_margin; |
7ab12479 | 5210 | |
0fa5d25b RS |
5211 | /* If redisplay is suppressed due to an error, try again. */ |
5212 | obuf->display_error_modiff = 0; | |
5213 | ||
413430c5 | 5214 | if (NILP (arg)) |
7ab12479 | 5215 | { |
666e158e MB |
5216 | if (!NILP (Vrecenter_redisplay) |
5217 | && (!EQ (Vrecenter_redisplay, Qtty) | |
5218 | || !NILP (Ftty_type (selected_frame)))) | |
5219 | { | |
ebfa62c0 | 5220 | ptrdiff_t i; |
f02d6d5c | 5221 | |
666e158e MB |
5222 | /* Invalidate pixel data calculated for all compositions. */ |
5223 | for (i = 0; i < n_compositions; i++) | |
5224 | composition_table[i]->font = NULL; | |
7ab12479 | 5225 | |
666e158e MB |
5226 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5227 | ||
5228 | Fredraw_frame (WINDOW_FRAME (w)); | |
5229 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
5230 | } | |
7d1d98ee | 5231 | |
6df47b59 | 5232 | center_p = 1; |
7ab12479 | 5233 | } |
413430c5 | 5234 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5235 | center_p = 1; |
7ab12479 JB |
5236 | else |
5237 | { | |
413430c5 | 5238 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5239 | CHECK_NUMBER (arg); |
ae12ecd7 | 5240 | iarg = XINT (arg); |
7ab12479 JB |
5241 | } |
5242 | ||
478292ed | 5243 | set_buffer_internal (buf); |
7ab12479 | 5244 | |
f6b43440 RS |
5245 | /* Do this after making BUF current |
5246 | in case scroll_margin is buffer-local. */ | |
71f02bc5 | 5247 | this_scroll_margin = |
d3d50620 | 5248 | max (0, min (scroll_margin, XFASTINT (w->total_lines) / 4)); |
f6b43440 | 5249 | |
521b203e | 5250 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5251 | have variable-height lines and centering point on the basis of |
5252 | line counts would lead to strange effects. */ | |
d3d50620 | 5253 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5254 | { |
6df47b59 GM |
5255 | if (center_p) |
5256 | { | |
521b203e GM |
5257 | struct it it; |
5258 | struct text_pos pt; | |
57b3e30b | 5259 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5260 | |
521b203e GM |
5261 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5262 | start_display (&it, w, pt); | |
f204989e | 5263 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5264 | charpos = IT_CHARPOS (it); |
5265 | bytepos = IT_BYTEPOS (it); | |
35928349 | 5266 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5267 | } |
f6b43440 | 5268 | else if (iarg < 0) |
6df47b59 | 5269 | { |
521b203e GM |
5270 | struct it it; |
5271 | struct text_pos pt; | |
5895d7b9 | 5272 | ptrdiff_t nlines = min (PTRDIFF_MAX, -iarg); |
f204989e KS |
5273 | int extra_line_spacing; |
5274 | int h = window_box_height (w); | |
57b3e30b | 5275 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5276 | |
f6b43440 RS |
5277 | iarg = - max (-iarg, this_scroll_margin); |
5278 | ||
521b203e GM |
5279 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5280 | start_display (&it, w, pt); | |
f204989e KS |
5281 | |
5282 | /* Be sure we have the exact height of the full line containing PT. */ | |
e4cc2dfc | 5283 | move_it_by_lines (&it, 0); |
521b203e | 5284 | |
d466fa4d | 5285 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5286 | height minus what's displayed in the line containing PT, |
5287 | and the lines below. */ | |
f204989e KS |
5288 | it.current_y = 0; |
5289 | it.vpos = 0; | |
e4cc2dfc | 5290 | move_it_by_lines (&it, nlines); |
d466fa4d | 5291 | |
f204989e KS |
5292 | if (it.vpos == nlines) |
5293 | h -= it.current_y; | |
5294 | else | |
5295 | { | |
5296 | /* Last line has no newline */ | |
5297 | h -= line_bottom_y (&it); | |
5298 | it.vpos++; | |
5299 | } | |
5300 | ||
5301 | /* Don't reserve space for extra line spacing of last line. */ | |
5302 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5303 | |
5304 | /* If we can't move down NLINES lines because we hit | |
5305 | the end of the buffer, count in some empty lines. */ | |
5306 | if (it.vpos < nlines) | |
f204989e KS |
5307 | { |
5308 | nlines -= it.vpos; | |
5309 | extra_line_spacing = it.extra_line_spacing; | |
5310 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5311 | } | |
5312 | if (h <= 0) | |
57b3e30b | 5313 | { |
35928349 | 5314 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
5315 | return Qnil; |
5316 | } | |
201c831a | 5317 | |
f204989e | 5318 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5319 | start_display (&it, w, pt); |
f204989e KS |
5320 | it.current_y = 0; |
5321 | move_it_vertically_backward (&it, h); | |
5322 | ||
5323 | /* If extra line spacing is present, we may move too far | |
5324 | back. This causes the last line to be only partially | |
5325 | visible (which triggers redisplay to recenter that line | |
5326 | in the middle), so move forward. | |
5327 | But ignore extra line spacing on last line, as it is not | |
5328 | considered to be part of the visible height of the line. | |
5329 | */ | |
5330 | h += extra_line_spacing; | |
5331 | while (-it.current_y > h) | |
e4cc2dfc | 5332 | move_it_by_lines (&it, 1); |
f204989e | 5333 | |
521b203e GM |
5334 | charpos = IT_CHARPOS (it); |
5335 | bytepos = IT_BYTEPOS (it); | |
57b3e30b | 5336 | |
35928349 | 5337 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5338 | } |
521b203e GM |
5339 | else |
5340 | { | |
5341 | struct position pos; | |
f6b43440 | 5342 | |
f6b43440 RS |
5343 | iarg = max (iarg, this_scroll_margin); |
5344 | ||
5345 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5346 | charpos = pos.bufpos; |
5347 | bytepos = pos.bytepos; | |
5348 | } | |
5349 | } | |
5350 | else | |
5351 | { | |
5352 | struct position pos; | |
5353 | int ht = window_internal_height (w); | |
5354 | ||
5355 | if (center_p) | |
a4429c5b | 5356 | iarg = ht / 2; |
f567c488 KS |
5357 | else if (iarg < 0) |
5358 | iarg += ht; | |
f6b43440 RS |
5359 | |
5360 | /* Don't let it get into the margin at either top or bottom. */ | |
2dd61a9b DA |
5361 | iarg = clip_to_bounds (this_scroll_margin, iarg, |
5362 | ht - this_scroll_margin - 1); | |
177c0ea7 | 5363 | |
f6b43440 | 5364 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
5365 | charpos = pos.bufpos; |
5366 | bytepos = pos.bytepos; | |
5367 | } | |
5368 | ||
5369 | /* Set the new window start. */ | |
d3d50620 | 5370 | set_marker_both (w->start, w->buffer, charpos, bytepos); |
e8c17b81 | 5371 | wset_window_end_valid (w, Qnil); |
177c0ea7 | 5372 | |
c98ff5dd | 5373 | w->optional_new_start = 1; |
95605b1b | 5374 | |
c98ff5dd DA |
5375 | w->start_at_line_beg = (bytepos == BEGV_BYTE || |
5376 | FETCH_BYTE (bytepos - 1) == '\n'); | |
177c0ea7 | 5377 | |
478292ed | 5378 | set_buffer_internal (obuf); |
7ab12479 JB |
5379 | return Qnil; |
5380 | } | |
b7617575 | 5381 | |
81fe0836 | 5382 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5383 | 0, 1, 0, |
5384 | doc: /* Return the height in lines of the text display area of WINDOW. | |
52162052 | 5385 | WINDOW must be a live window and defaults to the selected one. |
8fef9de1 | 5386 | |
105216ed CY |
5387 | The returned height does not include the mode line, any header line, |
5388 | nor any partial-height lines at the bottom of the text area. */) | |
5842a27b | 5389 | (Lisp_Object window) |
81fe0836 | 5390 | { |
52162052 | 5391 | struct window *w = decode_live_window (window); |
81fe0836 | 5392 | int pixel_height = window_box_height (w); |
d3d50620 | 5393 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5394 | return make_number (line_height); |
5395 | } | |
5396 | ||
5397 | ||
7ab12479 JB |
5398 | \f |
5399 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5400 | 1, 1, "P", |
5401 | doc: /* Position point relative to window. | |
87e68db4 JB |
5402 | ARG nil means position point at center of window. |
5403 | Else, ARG specifies vertical position within the window; | |
fdb82f93 | 5404 | zero means top of window, negative means relative to bottom of window. */) |
5842a27b | 5405 | (Lisp_Object arg) |
7ab12479 | 5406 | { |
b7617575 GM |
5407 | struct window *w = XWINDOW (selected_window); |
5408 | int lines, start; | |
540b6aa0 | 5409 | Lisp_Object window; |
f6b43440 RS |
5410 | #if 0 |
5411 | int this_scroll_margin; | |
5412 | #endif | |
7ab12479 | 5413 | |
d3d50620 DA |
5414 | if (!(BUFFERP (w->buffer) |
5415 | && XBUFFER (w->buffer) == current_buffer)) | |
794b75c7 SM |
5416 | /* This test is needed to make sure PT/PT_BYTE make sense in w->buffer |
5417 | when passed below to set_marker_both. */ | |
5418 | error ("move-to-window-line called from unrelated buffer"); | |
6dc1d2d3 | 5419 | |
b7617575 | 5420 | window = selected_window; |
d3d50620 | 5421 | start = marker_position (w->start); |
7ab12479 JB |
5422 | if (start < BEGV || start > ZV) |
5423 | { | |
b7617575 | 5424 | int height = window_internal_height (w); |
cd2be1dd | 5425 | Fvertical_motion (make_number (- (height / 2)), window); |
d3d50620 | 5426 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
c98ff5dd DA |
5427 | w->start_at_line_beg = !NILP (Fbolp ()); |
5428 | w->force_start = 1; | |
7ab12479 JB |
5429 | } |
5430 | else | |
d3d50620 | 5431 | Fgoto_char (w->start); |
7ab12479 | 5432 | |
b7617575 | 5433 | lines = displayed_window_lines (w); |
f6b43440 RS |
5434 | |
5435 | #if 0 | |
71f02bc5 | 5436 | this_scroll_margin = max (0, min (scroll_margin, lines / 4)); |
f6b43440 RS |
5437 | #endif |
5438 | ||
b7617575 GM |
5439 | if (NILP (arg)) |
5440 | XSETFASTINT (arg, lines / 2); | |
5441 | else | |
5442 | { | |
71f02bc5 | 5443 | EMACS_INT iarg = XINT (Fprefix_numeric_value (arg)); |
f6b43440 RS |
5444 | |
5445 | if (iarg < 0) | |
5446 | iarg = iarg + lines; | |
5447 | ||
5448 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5449 | to a place inside the scroll margins (which would cause the | |
5450 | next redisplay to scroll). I wrote this code, but then concluded | |
5451 | it is probably better not to install it. However, it is here | |
5452 | inside #if 0 so as not to lose it. -- rms. */ | |
5453 | ||
5454 | /* Don't let it get into the margin at either top or bottom. */ | |
5455 | iarg = max (iarg, this_scroll_margin); | |
5456 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5457 | #endif | |
5458 | ||
5459 | arg = make_number (iarg); | |
b7617575 GM |
5460 | } |
5461 | ||
c8bc6f65 | 5462 | /* Skip past a partially visible first line. */ |
163784df | 5463 | if (w->vscroll) |
163784df MB |
5464 | XSETINT (arg, XINT (arg) + 1); |
5465 | ||
540b6aa0 | 5466 | return Fvertical_motion (arg, window); |
7ab12479 | 5467 | } |
5500c422 GM |
5468 | |
5469 | ||
7ab12479 | 5470 | \f |
5500c422 GM |
5471 | /*********************************************************************** |
5472 | Window Configuration | |
5473 | ***********************************************************************/ | |
5474 | ||
7ab12479 JB |
5475 | struct save_window_data |
5476 | { | |
b102ceb1 | 5477 | struct vectorlike_header header; |
bdc727bf | 5478 | Lisp_Object selected_frame; |
7ab12479 JB |
5479 | Lisp_Object current_window; |
5480 | Lisp_Object current_buffer; | |
5481 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5482 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5483 | Lisp_Object root_window; |
bdc727bf | 5484 | Lisp_Object focus_frame; |
cbff28e8 RS |
5485 | /* A vector, each of whose elements is a struct saved_window |
5486 | for one window. */ | |
7ab12479 | 5487 | Lisp_Object saved_windows; |
b05b4e27 SM |
5488 | |
5489 | /* All fields above are traced by the GC. | |
5490 | From `fame-cols' down, the fields are ignored by the GC. */ | |
5491 | ||
5492 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
5493 | int frame_tool_bar_lines; | |
7ab12479 | 5494 | }; |
ff06df24 | 5495 | |
cbff28e8 | 5496 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 5497 | struct saved_window |
ea68264b | 5498 | { |
b102ceb1 | 5499 | struct vectorlike_header header; |
496e208e | 5500 | |
28545e04 | 5501 | Lisp_Object window, buffer, start, pointm, mark; |
949cf20f | 5502 | Lisp_Object left_col, top_line, total_cols, total_lines; |
496e208e | 5503 | Lisp_Object normal_cols, normal_lines; |
949cf20f | 5504 | Lisp_Object hscroll, min_hscroll; |
ea68264b GM |
5505 | Lisp_Object parent, prev; |
5506 | Lisp_Object start_at_line_beg; | |
5507 | Lisp_Object display_table; | |
949cf20f KS |
5508 | Lisp_Object left_margin_cols, right_margin_cols; |
5509 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
562dd5e9 | 5510 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type, dedicated; |
b6f67890 | 5511 | Lisp_Object combination_limit, window_parameters; |
ea68264b GM |
5512 | }; |
5513 | ||
7ab12479 JB |
5514 | #define SAVED_WINDOW_N(swv,n) \ |
5515 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
5516 | ||
5517 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 | 5518 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5842a27b | 5519 | (Lisp_Object object) |
7ab12479 | 5520 | { |
6ad0381c | 5521 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
5522 | } |
5523 | ||
3f8ab7bd | 5524 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 | 5525 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5842a27b | 5526 | (Lisp_Object config) |
3f8ab7bd RS |
5527 | { |
5528 | register struct save_window_data *data; | |
5529 | struct Lisp_Vector *saved_windows; | |
5530 | ||
663fbbba | 5531 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
5532 | |
5533 | data = (struct save_window_data *) XVECTOR (config); | |
5534 | saved_windows = XVECTOR (data->saved_windows); | |
d3d50620 | 5535 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
3f8ab7bd RS |
5536 | } |
5537 | ||
a7ca3326 | 5538 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
5539 | Sset_window_configuration, 1, 1, 0, |
5540 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
5541 | CONFIGURATION must be a value previously returned | |
5542 | by `current-window-configuration' (which see). | |
5543 | If CONFIGURATION was made from a frame that is now deleted, | |
5544 | only frame-independent values can be restored. In this case, | |
5545 | the return value is nil. Otherwise the value is t. */) | |
5842a27b | 5546 | (Lisp_Object configuration) |
7ab12479 | 5547 | { |
7ab12479 JB |
5548 | register struct save_window_data *data; |
5549 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 5550 | Lisp_Object new_current_buffer; |
fd482be5 | 5551 | Lisp_Object frame; |
44fa5b1e | 5552 | FRAME_PTR f; |
d311d28c | 5553 | ptrdiff_t old_point = -1; |
7ab12479 | 5554 | |
663fbbba | 5555 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 5556 | |
2f83aebe | 5557 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
5558 | saved_windows = XVECTOR (data->saved_windows); |
5559 | ||
7ab12479 | 5560 | new_current_buffer = data->current_buffer; |
e578f381 | 5561 | if (!BUFFER_LIVE_P (XBUFFER (new_current_buffer))) |
7ab12479 | 5562 | new_current_buffer = Qnil; |
72695e47 | 5563 | else |
73cadfc1 DK |
5564 | { |
5565 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
5566 | /* The code further down "preserves point" by saving here PT in |
5567 | old_point and then setting it later back into PT. When the | |
5568 | current-selected-window and the final-selected-window both show | |
5569 | the current buffer, this suffers from the problem that the | |
5570 | current PT is the window-point of the current-selected-window, | |
5571 | while the final PT is the point of the final-selected-window, so | |
5572 | this copy from one PT to the other would end up moving the | |
5573 | window-point of the final-selected-window to the window-point of | |
5574 | the current-selected-window. So we have to be careful which | |
5575 | point of the current-buffer we copy into old_point. */ | |
d3d50620 | 5576 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) |
e67a1dea | 5577 | && WINDOWP (selected_window) |
d3d50620 | 5578 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) |
e67a1dea | 5579 | && !EQ (selected_window, data->current_window)) |
4c1acb95 | 5580 | old_point = marker_position (XWINDOW (data->current_window)->pointm); |
e67a1dea SM |
5581 | else |
5582 | old_point = PT; | |
73cadfc1 | 5583 | else |
203eb0aa SM |
5584 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
5585 | point in new_current_buffer as of the last time this buffer was | |
5586 | used. This can be non-deterministic since it can be changed by | |
5587 | things like jit-lock by mere temporary selection of some random | |
5588 | window that happens to show this buffer. | |
5589 | So if possible we want this arbitrary choice of "which point" to | |
5590 | be the one from the to-be-selected-window so as to prevent this | |
5591 | window's cursor from being copied from another window. */ | |
d3d50620 | 5592 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) |
203eb0aa SM |
5593 | /* If current_window = selected_window, its point is in BUF_PT. */ |
5594 | && !EQ (selected_window, data->current_window)) | |
4c1acb95 | 5595 | old_point = marker_position (XWINDOW (data->current_window)->pointm); |
203eb0aa SM |
5596 | else |
5597 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 5598 | } |
7ab12479 | 5599 | |
d3d50620 | 5600 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
fd482be5 | 5601 | f = XFRAME (frame); |
177c0ea7 | 5602 | |
fd482be5 JB |
5603 | /* If f is a dead frame, don't bother rebuilding its window tree. |
5604 | However, there is other stuff we should still try to do below. */ | |
5605 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 5606 | { |
6198ccd0 MR |
5607 | Lisp_Object window; |
5608 | Lisp_Object dead_windows = Qnil; | |
6a6ee00d | 5609 | register Lisp_Object tem, par, pers; |
fd482be5 JB |
5610 | register struct window *w; |
5611 | register struct saved_window *p; | |
5500c422 GM |
5612 | struct window *root_window; |
5613 | struct window **leaf_windows; | |
5614 | int n_leaf_windows; | |
71f02bc5 PE |
5615 | ptrdiff_t k; |
5616 | int i, n; | |
fd482be5 JB |
5617 | |
5618 | /* If the frame has been resized since this window configuration was | |
5619 | made, we change the frame to the size specified in the | |
5620 | configuration, restore the configuration, and then resize it | |
5621 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
5622 | int previous_frame_lines = FRAME_LINES (f); |
5623 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 5624 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 5625 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 5626 | |
37b9743e MR |
5627 | /* Don't do this within the main loop below: This may call Lisp |
5628 | code and is thus potentially unsafe while input is blocked. */ | |
5629 | for (k = 0; k < saved_windows->header.size; k++) | |
5630 | { | |
5631 | p = SAVED_WINDOW_N (saved_windows, k); | |
5632 | window = p->window; | |
5633 | w = XWINDOW (window); | |
5634 | if (!NILP (w->buffer) | |
5635 | && !EQ (w->buffer, p->buffer) | |
e578f381 | 5636 | && BUFFER_LIVE_P (XBUFFER (p->buffer))) |
37b9743e MR |
5637 | /* If a window we restore gets another buffer, record the |
5638 | window's old buffer. */ | |
5639 | call1 (Qrecord_window_buffer, window); | |
5640 | } | |
5641 | ||
d2b35234 RS |
5642 | /* The mouse highlighting code could get screwed up |
5643 | if it runs during this. */ | |
4d7e6e51 | 5644 | block_input (); |
d2b35234 | 5645 | |
b05b4e27 SM |
5646 | if (data->frame_lines != previous_frame_lines |
5647 | || data->frame_cols != previous_frame_cols) | |
5648 | change_frame_size (f, data->frame_lines, | |
5649 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 5650 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 5651 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 5652 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
5653 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
5654 | make_number (0)); | |
4314246f | 5655 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 5656 | if (data->frame_tool_bar_lines |
9ea173e8 | 5657 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
5658 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
5659 | make_number (0)); | |
4314246f | 5660 | #endif |
217f2871 | 5661 | #endif |
fd482be5 | 5662 | |
a46c0153 RS |
5663 | /* "Swap out" point from the selected window's buffer |
5664 | into the window itself. (Normally the pointm of the selected | |
5665 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
5666 | restoring the window contents, and prevent it from |
5667 | being done later on when we select a new window. */ | |
d3d50620 | 5668 | if (! NILP (XWINDOW (selected_window)->buffer)) |
596ae0cf RS |
5669 | { |
5670 | w = XWINDOW (selected_window); | |
d3d50620 DA |
5671 | set_marker_both (w->pointm, |
5672 | w->buffer, | |
5673 | BUF_PT (XBUFFER (w->buffer)), | |
5674 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
596ae0cf RS |
5675 | } |
5676 | ||
fd482be5 | 5677 | windows_or_buffers_changed++; |
29aeee73 | 5678 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 5679 | |
5500c422 | 5680 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 5681 | is a serious redisplay flickering problem. What we would |
5500c422 | 5682 | really like to do is to free only those matrices not reused |
9d14503e | 5683 | below. */ |
5500c422 | 5684 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); |
38182d90 PE |
5685 | leaf_windows = alloca (count_windows (root_window) |
5686 | * sizeof *leaf_windows); | |
5500c422 GM |
5687 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); |
5688 | ||
fd482be5 JB |
5689 | /* Kludge Alert! |
5690 | Mark all windows now on frame as "deleted". | |
5691 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 5692 | |
fd482be5 JB |
5693 | Save their current buffers in their height fields, since we may |
5694 | need it later, if a buffer saved in the configuration is now | |
5695 | dead. */ | |
be7f5545 | 5696 | delete_all_child_windows (FRAME_ROOT_WINDOW (f)); |
fd482be5 | 5697 | |
eab3844f | 5698 | for (k = 0; k < saved_windows->header.size; k++) |
fd482be5 JB |
5699 | { |
5700 | p = SAVED_WINDOW_N (saved_windows, k); | |
6198ccd0 MR |
5701 | window = p->window; |
5702 | w = XWINDOW (window); | |
e8c17b81 | 5703 | wset_next (w, Qnil); |
7ab12479 | 5704 | |
fd482be5 | 5705 | if (!NILP (p->parent)) |
e8c17b81 PE |
5706 | wset_parent |
5707 | (w, SAVED_WINDOW_N (saved_windows, XFASTINT (p->parent))->window); | |
fd482be5 | 5708 | else |
e8c17b81 | 5709 | wset_parent (w, Qnil); |
7ab12479 | 5710 | |
fd482be5 | 5711 | if (!NILP (p->prev)) |
7ab12479 | 5712 | { |
e8c17b81 PE |
5713 | wset_prev |
5714 | (w, SAVED_WINDOW_N (saved_windows, XFASTINT (p->prev))->window); | |
5715 | wset_next (XWINDOW (w->prev), p->window); | |
fd482be5 JB |
5716 | } |
5717 | else | |
5718 | { | |
e8c17b81 | 5719 | wset_prev (w, Qnil); |
d3d50620 | 5720 | if (!NILP (w->parent)) |
fd482be5 | 5721 | { |
d3d50620 | 5722 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 | 5723 | { |
e8c17b81 PE |
5724 | wset_vchild (XWINDOW (w->parent), p->window); |
5725 | wset_hchild (XWINDOW (w->parent), Qnil); | |
fd482be5 JB |
5726 | } |
5727 | else | |
5728 | { | |
e8c17b81 PE |
5729 | wset_hchild (XWINDOW (w->parent), p->window); |
5730 | wset_vchild (XWINDOW (w->parent), Qnil); | |
fd482be5 JB |
5731 | } |
5732 | } | |
5733 | } | |
5734 | ||
5735 | /* If we squirreled away the buffer in the window's height, | |
5736 | restore it now. */ | |
d3d50620 | 5737 | if (BUFFERP (w->total_lines)) |
e8c17b81 PE |
5738 | wset_buffer (w, w->total_lines); |
5739 | wset_left_col (w, p->left_col); | |
5740 | wset_top_line (w, p->top_line); | |
5741 | wset_total_cols (w, p->total_cols); | |
5742 | wset_total_lines (w, p->total_lines); | |
5743 | wset_normal_cols (w, p->normal_cols); | |
5744 | wset_normal_lines (w, p->normal_lines); | |
80b00b08 DA |
5745 | w->hscroll = XFASTINT (p->hscroll); |
5746 | w->min_hscroll = XFASTINT (p->min_hscroll); | |
e8c17b81 PE |
5747 | wset_display_table (w, p->display_table); |
5748 | wset_left_margin_cols (w, p->left_margin_cols); | |
5749 | wset_right_margin_cols (w, p->right_margin_cols); | |
5750 | wset_left_fringe_width (w, p->left_fringe_width); | |
5751 | wset_right_fringe_width (w, p->right_fringe_width); | |
2af3565e | 5752 | w->fringes_outside_margins = !NILP (p->fringes_outside_margins); |
e8c17b81 PE |
5753 | wset_scroll_bar_width (w, p->scroll_bar_width); |
5754 | wset_vertical_scroll_bar_type (w, p->vertical_scroll_bar_type); | |
5755 | wset_dedicated (w, p->dedicated); | |
5756 | wset_combination_limit (w, p->combination_limit); | |
6a6ee00d MR |
5757 | /* Restore any window parameters that have been saved. |
5758 | Parameters that have not been saved are left alone. */ | |
5759 | for (tem = p->window_parameters; CONSP (tem); tem = XCDR (tem)) | |
5760 | { | |
5761 | pers = XCAR (tem); | |
5762 | if (CONSP (pers)) | |
5763 | { | |
5764 | if (NILP (XCDR (pers))) | |
5765 | { | |
d3d50620 | 5766 | par = Fassq (XCAR (pers), w->window_parameters); |
6a6ee00d MR |
5767 | if (CONSP (par) && !NILP (XCDR (par))) |
5768 | /* Reset a parameter to nil if and only if it | |
5769 | has a non-nil association. Don't make new | |
5770 | associations. */ | |
5771 | Fsetcdr (par, Qnil); | |
5772 | } | |
5773 | else | |
5774 | /* Always restore a non-nil value. */ | |
5775 | Fset_window_parameter (window, XCAR (pers), XCDR (pers)); | |
5776 | } | |
5777 | } | |
5778 | ||
80b00b08 DA |
5779 | w->last_modified = 0; |
5780 | w->last_overlay_modified = 0; | |
fd482be5 JB |
5781 | |
5782 | /* Reinstall the saved buffer and pointers into it. */ | |
5783 | if (NILP (p->buffer)) | |
6198ccd0 | 5784 | /* An internal window. */ |
e8c17b81 | 5785 | wset_buffer (w, p->buffer); |
e578f381 | 5786 | else if (BUFFER_LIVE_P (XBUFFER (p->buffer))) |
6198ccd0 MR |
5787 | /* If saved buffer is alive, install it. */ |
5788 | { | |
e8c17b81 PE |
5789 | wset_buffer (w, p->buffer); |
5790 | w->start_at_line_beg = !NILP (p->start_at_line_beg); | |
5791 | set_marker_restricted (w->start, p->start, w->buffer); | |
5792 | set_marker_restricted (w->pointm, p->pointm, | |
5793 | w->buffer); | |
5794 | Fset_marker (BVAR (XBUFFER (w->buffer), mark), | |
5795 | p->mark, w->buffer); | |
5796 | ||
5797 | /* As documented in Fcurrent_window_configuration, don't | |
5798 | restore the location of point in the buffer which was | |
5799 | current when the window configuration was recorded. */ | |
5800 | if (!EQ (p->buffer, new_current_buffer) | |
5801 | && XBUFFER (p->buffer) == current_buffer) | |
5802 | Fgoto_char (w->pointm); | |
077288cf | 5803 | } |
d3d50620 | 5804 | else if (!NILP (w->buffer) |
e578f381 | 5805 | && BUFFER_LIVE_P (XBUFFER (w->buffer))) |
077288cf DA |
5806 | /* Keep window's old buffer; make sure the markers are |
5807 | real. */ | |
5808 | { | |
5809 | /* Set window markers at start of visible range. */ | |
d3d50620 DA |
5810 | if (XMARKER (w->start)->buffer == 0) |
5811 | set_marker_restricted (w->start, make_number (0), | |
5812 | w->buffer); | |
5813 | if (XMARKER (w->pointm)->buffer == 0) | |
f00af5b1 | 5814 | set_marker_restricted_both |
d3d50620 DA |
5815 | (w->pointm, w->buffer, |
5816 | BUF_PT (XBUFFER (w->buffer)), | |
5817 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
077288cf DA |
5818 | w->start_at_line_beg = 1; |
5819 | } | |
fd482be5 | 5820 | else |
6198ccd0 | 5821 | /* Window has no live buffer, get one. */ |
fd482be5 | 5822 | { |
6198ccd0 MR |
5823 | /* Get the buffer via other_buffer_safely in order to |
5824 | avoid showing an unimportant buffer and, if necessary, to | |
5825 | recreate *scratch* in the course (part of Juanma's bs-show | |
5826 | scenario from March 2011). */ | |
e8c17b81 | 5827 | wset_buffer (w, other_buffer_safely (Fcurrent_buffer ())); |
6198ccd0 MR |
5828 | /* This will set the markers to beginning of visible |
5829 | range. */ | |
d3d50620 DA |
5830 | set_marker_restricted (w->start, |
5831 | make_number (0), w->buffer); | |
5832 | set_marker_restricted (w->pointm, | |
5833 | make_number (0), w->buffer); | |
c98ff5dd | 5834 | w->start_at_line_beg = 1; |
d3d50620 | 5835 | if (!NILP (w->dedicated)) |
6198ccd0 MR |
5836 | /* Record this window as dead. */ |
5837 | dead_windows = Fcons (window, dead_windows); | |
5838 | /* Make sure window is no more dedicated. */ | |
e8c17b81 | 5839 | wset_dedicated (w, Qnil); |
7ab12479 JB |
5840 | } |
5841 | } | |
9ace597f | 5842 | |
f00af5b1 | 5843 | fset_root_window (f, data->root_window); |
a46c0153 RS |
5844 | /* Arrange *not* to restore point in the buffer that was |
5845 | current when the window configuration was saved. */ | |
d3d50620 DA |
5846 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
5847 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 5848 | make_number (old_point), |
d3d50620 | 5849 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 5850 | |
6198ccd0 MR |
5851 | /* In the following call to `select-window', prevent "swapping out |
5852 | point" in the old selected window using the buffer that has | |
5853 | been restored into it. We already swapped out that point from | |
5854 | that window's old buffer. */ | |
e6b84b30 | 5855 | select_window (data->current_window, Qnil, 1); |
d3d50620 | 5856 | BVAR (XBUFFER (XWINDOW (selected_window)->buffer), last_selected_window) |
396a830c | 5857 | = selected_window; |
7ab12479 | 5858 | |
db269683 | 5859 | if (NILP (data->focus_frame) |
017b2bad | 5860 | || (FRAMEP (data->focus_frame) |
db269683 JB |
5861 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
5862 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 5863 | |
fd482be5 | 5864 | /* Set the screen height to the value it had before this function. */ |
949cf20f KS |
5865 | if (previous_frame_lines != FRAME_LINES (f) |
5866 | || previous_frame_cols != FRAME_COLS (f)) | |
5867 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 5868 | 0, 0, 0); |
e3678b64 | 5869 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 5870 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
5871 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
5872 | make_number (0)); | |
4314246f | 5873 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5874 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
5875 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
5876 | make_number (0)); | |
4314246f | 5877 | #endif |
217f2871 | 5878 | #endif |
d2b35234 | 5879 | |
5500c422 | 5880 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
5881 | for (i = n = 0; i < n_leaf_windows; ++i) |
5882 | { | |
d3d50620 | 5883 | if (NILP (leaf_windows[i]->buffer)) |
c4280705 GM |
5884 | { |
5885 | /* Assert it's not reused as a combination. */ | |
d3d50620 DA |
5886 | eassert (NILP (leaf_windows[i]->hchild) |
5887 | && NILP (leaf_windows[i]->vchild)); | |
c4280705 | 5888 | free_window_matrices (leaf_windows[i]); |
c4280705 | 5889 | } |
d3d50620 | 5890 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) |
c4280705 GM |
5891 | ++n; |
5892 | } | |
177c0ea7 | 5893 | |
5500c422 | 5894 | adjust_glyphs (f); |
4d7e6e51 | 5895 | unblock_input (); |
756b6edc | 5896 | |
6198ccd0 MR |
5897 | /* Scan dead buffer windows. */ |
5898 | for (; CONSP (dead_windows); dead_windows = XCDR (dead_windows)) | |
5899 | { | |
5900 | window = XCAR (dead_windows); | |
5901 | if (WINDOW_LIVE_P (window) && !EQ (window, FRAME_ROOT_WINDOW (f))) | |
5902 | delete_deletable_window (window); | |
5903 | } | |
5904 | ||
478292ed RS |
5905 | /* Fselect_window will have made f the selected frame, so we |
5906 | reselect the proper frame here. Fhandle_switch_frame will change the | |
5907 | selected window too, but that doesn't make the call to | |
5908 | Fselect_window above totally superfluous; it still sets f's | |
5909 | selected window. */ | |
5910 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
c6932ecd | 5911 | do_switch_frame (data->selected_frame, 0, 0, Qnil); |
478292ed | 5912 | |
eeca6f6f | 5913 | run_window_configuration_change_hook (f); |
478292ed | 5914 | } |
bdc727bf JB |
5915 | |
5916 | if (!NILP (new_current_buffer)) | |
c4b6914d MR |
5917 | { |
5918 | Fset_buffer (new_current_buffer); | |
5919 | /* If the new current buffer doesn't appear in the selected | |
5920 | window, go to its old point (see bug#12208). */ | |
5921 | if (!EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) | |
5922 | Fgoto_char (make_number (old_point)); | |
5923 | } | |
bdc727bf | 5924 | |
478292ed | 5925 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 5926 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 5927 | |
3f8ab7bd | 5928 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
5929 | } |
5930 | ||
562dd5e9 | 5931 | |
be7f5545 MR |
5932 | /* Recursively delete all child windows reachable via the next, vchild, |
5933 | and hchild slots of WINDOW. */ | |
fd482be5 | 5934 | void |
be7f5545 | 5935 | delete_all_child_windows (Lisp_Object window) |
7ab12479 | 5936 | { |
fa8a67e6 MR |
5937 | register struct window *w; |
5938 | ||
5939 | w = XWINDOW (window); | |
5940 | ||
d3d50620 | 5941 | if (!NILP (w->next)) |
fa8a67e6 | 5942 | /* Delete WINDOW's siblings (we traverse postorderly). */ |
d3d50620 | 5943 | delete_all_child_windows (w->next); |
605be8af | 5944 | |
e8c17b81 PE |
5945 | /* See Fset_window_configuration for excuse. */ |
5946 | wset_total_lines (w, w->buffer); | |
605be8af | 5947 | |
d3d50620 | 5948 | if (!NILP (w->vchild)) |
fa8a67e6 | 5949 | { |
d3d50620 | 5950 | delete_all_child_windows (w->vchild); |
e8c17b81 | 5951 | wset_vchild (w, Qnil); |
fa8a67e6 | 5952 | } |
d3d50620 | 5953 | else if (!NILP (w->hchild)) |
fa8a67e6 | 5954 | { |
d3d50620 | 5955 | delete_all_child_windows (w->hchild); |
e8c17b81 | 5956 | wset_hchild (w, Qnil); |
fa8a67e6 | 5957 | } |
d3d50620 | 5958 | else if (!NILP (w->buffer)) |
fa8a67e6 MR |
5959 | { |
5960 | unshow_buffer (w); | |
d3d50620 DA |
5961 | unchain_marker (XMARKER (w->pointm)); |
5962 | unchain_marker (XMARKER (w->start)); | |
e8c17b81 | 5963 | wset_buffer (w, Qnil); |
fa8a67e6 | 5964 | } |
acf70840 GM |
5965 | |
5966 | Vwindow_list = Qnil; | |
7ab12479 JB |
5967 | } |
5968 | \f | |
5969 | static int | |
971de7fb | 5970 | count_windows (register struct window *window) |
7ab12479 JB |
5971 | { |
5972 | register int count = 1; | |
d3d50620 DA |
5973 | if (!NILP (window->next)) |
5974 | count += count_windows (XWINDOW (window->next)); | |
5975 | if (!NILP (window->vchild)) | |
5976 | count += count_windows (XWINDOW (window->vchild)); | |
5977 | if (!NILP (window->hchild)) | |
5978 | count += count_windows (XWINDOW (window->hchild)); | |
7ab12479 JB |
5979 | return count; |
5980 | } | |
5981 | ||
5500c422 | 5982 | |
177c0ea7 | 5983 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 | 5984 | Value is last index + 1. */ |
5500c422 | 5985 | static int |
971de7fb | 5986 | get_leaf_windows (struct window *w, struct window **flat, int i) |
5500c422 GM |
5987 | { |
5988 | while (w) | |
5989 | { | |
d3d50620 DA |
5990 | if (!NILP (w->hchild)) |
5991 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
5992 | else if (!NILP (w->vchild)) | |
5993 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 5994 | else |
5500c422 GM |
5995 | flat[i++] = w; |
5996 | ||
d3d50620 | 5997 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
5500c422 GM |
5998 | } |
5999 | ||
6000 | return i; | |
6001 | } | |
6002 | ||
6003 | ||
6004 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
c80e3b4a | 6005 | null if W's current matrix is invalid, so that no meaningful glyph |
5500c422 | 6006 | can be returned. */ |
5500c422 | 6007 | struct glyph * |
971de7fb | 6008 | get_phys_cursor_glyph (struct window *w) |
5500c422 GM |
6009 | { |
6010 | struct glyph_row *row; | |
6011 | struct glyph *glyph; | |
f8fe6f96 | 6012 | int hpos = w->phys_cursor.hpos; |
5500c422 | 6013 | |
f8fe6f96 EZ |
6014 | if (!(w->phys_cursor.vpos >= 0 |
6015 | && w->phys_cursor.vpos < w->current_matrix->nrows)) | |
6016 | return NULL; | |
6017 | ||
6018 | row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos); | |
6019 | if (!row->enabled_p) | |
6020 | return NULL; | |
6021 | ||
80b00b08 | 6022 | if (w->hscroll) |
f8fe6f96 EZ |
6023 | { |
6024 | /* When the window is hscrolled, cursor hpos can legitimately be | |
6025 | out of bounds, but we draw the cursor at the corresponding | |
6026 | window margin in that case. */ | |
6027 | if (!row->reversed_p && hpos < 0) | |
6028 | hpos = 0; | |
6029 | if (row->reversed_p && hpos >= row->used[TEXT_AREA]) | |
6030 | hpos = row->used[TEXT_AREA] - 1; | |
6031 | } | |
5500c422 | 6032 | |
f8fe6f96 EZ |
6033 | if (row->used[TEXT_AREA] > hpos |
6034 | && 0 <= hpos) | |
6035 | glyph = row->glyphs[TEXT_AREA] + hpos; | |
5500c422 GM |
6036 | else |
6037 | glyph = NULL; | |
6038 | ||
6039 | return glyph; | |
6040 | } | |
6041 | ||
6042 | ||
7ab12479 | 6043 | static int |
971de7fb | 6044 | save_window_save (Lisp_Object window, struct Lisp_Vector *vector, int i) |
7ab12479 JB |
6045 | { |
6046 | register struct saved_window *p; | |
6047 | register struct window *w; | |
6a6ee00d | 6048 | register Lisp_Object tem, pers, par; |
7ab12479 | 6049 | |
d3d50620 | 6050 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
6051 | { |
6052 | p = SAVED_WINDOW_N (vector, i); | |
6053 | w = XWINDOW (window); | |
6054 | ||
e8c17b81 | 6055 | wset_temslot (w, make_number (i)); i++; |
7ab12479 | 6056 | p->window = window; |
d3d50620 DA |
6057 | p->buffer = w->buffer; |
6058 | p->left_col = w->left_col; | |
6059 | p->top_line = w->top_line; | |
6060 | p->total_cols = w->total_cols; | |
6061 | p->total_lines = w->total_lines; | |
6062 | p->normal_cols = w->normal_cols; | |
6063 | p->normal_lines = w->normal_lines; | |
80b00b08 DA |
6064 | XSETFASTINT (p->hscroll, w->hscroll); |
6065 | XSETFASTINT (p->min_hscroll, w->min_hscroll); | |
d3d50620 DA |
6066 | p->display_table = w->display_table; |
6067 | p->left_margin_cols = w->left_margin_cols; | |
6068 | p->right_margin_cols = w->right_margin_cols; | |
6069 | p->left_fringe_width = w->left_fringe_width; | |
6070 | p->right_fringe_width = w->right_fringe_width; | |
2af3565e | 6071 | p->fringes_outside_margins = w->fringes_outside_margins ? Qt : Qnil; |
d3d50620 DA |
6072 | p->scroll_bar_width = w->scroll_bar_width; |
6073 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6074 | p->dedicated = w->dedicated; | |
6075 | p->combination_limit = w->combination_limit; | |
6a6ee00d MR |
6076 | p->window_parameters = Qnil; |
6077 | ||
6078 | if (!NILP (Vwindow_persistent_parameters)) | |
6079 | { | |
6080 | /* Run cycle detection on Vwindow_persistent_parameters. */ | |
6081 | Lisp_Object tortoise, hare; | |
6082 | ||
6083 | hare = tortoise = Vwindow_persistent_parameters; | |
6084 | while (CONSP (hare)) | |
6085 | { | |
6086 | hare = XCDR (hare); | |
6087 | if (!CONSP (hare)) | |
6088 | break; | |
6089 | ||
6090 | hare = XCDR (hare); | |
6091 | tortoise = XCDR (tortoise); | |
6092 | ||
6093 | if (EQ (hare, tortoise)) | |
6094 | /* Reset Vwindow_persistent_parameters to Qnil. */ | |
6095 | { | |
6096 | Vwindow_persistent_parameters = Qnil; | |
6097 | break; | |
6098 | } | |
6099 | } | |
6100 | ||
6101 | for (tem = Vwindow_persistent_parameters; CONSP (tem); | |
6102 | tem = XCDR (tem)) | |
6103 | { | |
6104 | pers = XCAR (tem); | |
34a02f46 MR |
6105 | /* Save values for persistent window parameters. */ |
6106 | if (CONSP (pers) && !NILP (XCDR (pers))) | |
6a6ee00d | 6107 | { |
d3d50620 | 6108 | par = Fassq (XCAR (pers), w->window_parameters); |
6a6ee00d MR |
6109 | if (NILP (par)) |
6110 | /* If the window has no value for the parameter, | |
6111 | make one. */ | |
6112 | p->window_parameters = Fcons (Fcons (XCAR (pers), Qnil), | |
6113 | p->window_parameters); | |
6114 | else | |
6115 | /* If the window has a value for the parameter, | |
6116 | save it. */ | |
6117 | p->window_parameters = Fcons (Fcons (XCAR (par), | |
6118 | XCDR (par)), | |
6119 | p->window_parameters); | |
6120 | } | |
6121 | } | |
6122 | } | |
6123 | ||
d3d50620 | 6124 | if (!NILP (w->buffer)) |
7ab12479 | 6125 | { |
6a6ee00d MR |
6126 | /* Save w's value of point in the window configuration. If w |
6127 | is the selected window, then get the value of point from | |
6128 | the buffer; pointm is garbage in the selected window. */ | |
7ab12479 | 6129 | if (EQ (window, selected_window)) |
d3d50620 DA |
6130 | p->pointm = build_marker (XBUFFER (w->buffer), |
6131 | BUF_PT (XBUFFER (w->buffer)), | |
6132 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 | 6133 | else |
d3d50620 | 6134 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
de8c03dc SM |
6135 | XMARKER (p->pointm)->insertion_type |
6136 | = !NILP (Vwindow_point_insertion_type); | |
7ab12479 | 6137 | |
d3d50620 | 6138 | p->start = Fcopy_marker (w->start, Qnil); |
c98ff5dd | 6139 | p->start_at_line_beg = w->start_at_line_beg ? Qt : Qnil; |
7ab12479 | 6140 | |
d3d50620 | 6141 | tem = BVAR (XBUFFER (w->buffer), mark); |
eeb82665 | 6142 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6143 | } |
6144 | else | |
6145 | { | |
6146 | p->pointm = Qnil; | |
6147 | p->start = Qnil; | |
6148 | p->mark = Qnil; | |
6149 | p->start_at_line_beg = Qnil; | |
6150 | } | |
6151 | ||
d3d50620 | 6152 | if (NILP (w->parent)) |
7ab12479 JB |
6153 | p->parent = Qnil; |
6154 | else | |
d3d50620 | 6155 | p->parent = XWINDOW (w->parent)->temslot; |
7ab12479 | 6156 | |
d3d50620 | 6157 | if (NILP (w->prev)) |
7ab12479 JB |
6158 | p->prev = Qnil; |
6159 | else | |
d3d50620 | 6160 | p->prev = XWINDOW (w->prev)->temslot; |
7ab12479 | 6161 | |
d3d50620 DA |
6162 | if (!NILP (w->vchild)) |
6163 | i = save_window_save (w->vchild, vector, i); | |
6164 | if (!NILP (w->hchild)) | |
6165 | i = save_window_save (w->hchild, vector, i); | |
7ab12479 JB |
6166 | } |
6167 | ||
6168 | return i; | |
6169 | } | |
6170 | ||
a7ca3326 | 6171 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6172 | Scurrent_window_configuration, 0, 1, 0, |
6173 | doc: /* Return an object representing the current window configuration of FRAME. | |
6174 | If FRAME is nil or omitted, use the selected frame. | |
6175 | This describes the number of windows, their sizes and current buffers, | |
6176 | and for each displayed buffer, where display starts, and the positions of | |
6177 | point and mark. An exception is made for point in the current buffer: | |
6178 | its value is -not- saved. | |
6179 | This also records the currently selected frame, and FRAME's focus | |
34a02f46 MR |
6180 | redirection (see `redirect-frame-focus'). The variable |
6181 | `window-persistent-parameters' specifies which window parameters are | |
6182 | saved by this function. */) | |
5842a27b | 6183 | (Lisp_Object frame) |
7ab12479 JB |
6184 | { |
6185 | register Lisp_Object tem; | |
6186 | register int n_windows; | |
6187 | register struct save_window_data *data; | |
6188 | register int i; | |
d9f07150 | 6189 | struct frame *f = decode_live_frame (frame); |
7ab12479 | 6190 | |
44fa5b1e | 6191 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
6192 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
6193 | PVEC_WINDOW_CONFIGURATION); | |
6194 | ||
6195 | data->frame_cols = FRAME_COLS (f); | |
6196 | data->frame_lines = FRAME_LINES (f); | |
6197 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
6198 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 6199 | data->selected_frame = selected_frame; |
44fa5b1e | 6200 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6201 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6202 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6203 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6204 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6205 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
7ab12479 JB |
6206 | tem = Fmake_vector (make_number (n_windows), Qnil); |
6207 | data->saved_windows = tem; | |
6208 | for (i = 0; i < n_windows; i++) | |
28be1ada DA |
6209 | ASET (tem, i, |
6210 | Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil)); | |
a1d58e5b | 6211 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6212 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6213 | return (tem); |
6214 | } | |
5500c422 GM |
6215 | \f |
6216 | /*********************************************************************** | |
6217 | Marginal Areas | |
6218 | ***********************************************************************/ | |
6219 | ||
6220 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6221 | 2, 3, 0, |
fdb82f93 | 6222 | doc: /* Set width of marginal areas of window WINDOW. |
52162052 MR |
6223 | WINDOW must be a live window and defaults to the selected one. |
6224 | ||
6b61353c KH |
6225 | Second arg LEFT-WIDTH specifies the number of character cells to |
6226 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6227 | does the same for the right marginal area. A nil width parameter | |
6228 | means no margin. */) | |
5842a27b | 6229 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width) |
5500c422 | 6230 | { |
52162052 | 6231 | struct window *w = decode_live_window (window); |
5500c422 | 6232 | |
6b61353c KH |
6233 | /* Translate negative or zero widths to nil. |
6234 | Margins that are too wide have to be checked elsewhere. */ | |
949cf20f | 6235 | |
c10ce82e | 6236 | if (!NILP (left_width)) |
6b61353c | 6237 | { |
c10ce82e JB |
6238 | CHECK_NUMBER (left_width); |
6239 | if (XINT (left_width) <= 0) | |
6240 | left_width = Qnil; | |
6b61353c | 6241 | } |
5500c422 | 6242 | |
c10ce82e | 6243 | if (!NILP (right_width)) |
6b61353c | 6244 | { |
c10ce82e JB |
6245 | CHECK_NUMBER (right_width); |
6246 | if (XINT (right_width) <= 0) | |
6247 | right_width = Qnil; | |
6b61353c | 6248 | } |
5500c422 | 6249 | |
d3d50620 DA |
6250 | if (!EQ (w->left_margin_cols, left_width) |
6251 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6252 | { |
e8c17b81 PE |
6253 | wset_left_margin_cols (w, left_width); |
6254 | wset_right_margin_cols (w, right_width); | |
949cf20f KS |
6255 | |
6256 | adjust_window_margins (w); | |
6257 | ||
6258 | ++windows_or_buffers_changed; | |
6259 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6260 | } | |
5500c422 | 6261 | |
5500c422 GM |
6262 | return Qnil; |
6263 | } | |
6264 | ||
6265 | ||
6266 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6267 | 0, 1, 0, | |
fdb82f93 | 6268 | doc: /* Get width of marginal areas of window WINDOW. |
52162052 MR |
6269 | WINDOW must be a live window and defaults to the selected one. |
6270 | ||
fdb82f93 PJ |
6271 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). |
6272 | If a marginal area does not exist, its width will be returned | |
6273 | as nil. */) | |
5842a27b | 6274 | (Lisp_Object window) |
5500c422 | 6275 | { |
52162052 | 6276 | struct window *w = decode_live_window (window); |
d3d50620 | 6277 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
949cf20f KS |
6278 | } |
6279 | ||
6280 | ||
6281 | \f | |
6282 | /*********************************************************************** | |
6283 | Fringes | |
6284 | ***********************************************************************/ | |
6285 | ||
a7ca3326 | 6286 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, |
949cf20f | 6287 | 2, 4, 0, |
6b61353c | 6288 | doc: /* Set the fringe widths of window WINDOW. |
52162052 MR |
6289 | WINDOW must be a live window and defaults to the selected one. |
6290 | ||
6b61353c KH |
6291 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for |
6292 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6293 | fringe width. If a fringe width arg is nil, that means to use the | |
6294 | frame's default fringe width. Default fringe widths can be set with | |
6295 | the command `set-fringe-style'. | |
6296 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6297 | outside of the display margins. By default, fringes are drawn between | |
6298 | display marginal areas and the text area. */) | |
5842a27b | 6299 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width, Lisp_Object outside_margins) |
949cf20f | 6300 | { |
52162052 | 6301 | struct window *w = decode_live_window (window); |
2af3565e | 6302 | int outside = !NILP (outside_margins); |
949cf20f | 6303 | |
c10ce82e JB |
6304 | if (!NILP (left_width)) |
6305 | CHECK_NATNUM (left_width); | |
6306 | if (!NILP (right_width)) | |
6307 | CHECK_NATNUM (right_width); | |
5a857365 | 6308 | |
017e297e | 6309 | /* Do nothing on a tty. */ |
d46c6df5 | 6310 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
d3d50620 DA |
6311 | && (!EQ (w->left_fringe_width, left_width) |
6312 | || !EQ (w->right_fringe_width, right_width) | |
2af3565e | 6313 | || w->fringes_outside_margins != outside)) |
949cf20f | 6314 | { |
e8c17b81 PE |
6315 | wset_left_fringe_width (w, left_width); |
6316 | wset_right_fringe_width (w, right_width); | |
2af3565e | 6317 | w->fringes_outside_margins = outside; |
949cf20f KS |
6318 | |
6319 | adjust_window_margins (w); | |
6320 | ||
6321 | clear_glyph_matrix (w->current_matrix); | |
e8c17b81 | 6322 | wset_window_end_valid (w, Qnil); |
949cf20f KS |
6323 | |
6324 | ++windows_or_buffers_changed; | |
6325 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6326 | } | |
6327 | ||
6328 | return Qnil; | |
6329 | } | |
6330 | ||
6331 | ||
6332 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6333 | 0, 1, 0, | |
6334 | doc: /* Get width of fringes of window WINDOW. | |
52162052 MR |
6335 | WINDOW must be a live window and defaults to the selected one. |
6336 | ||
6b61353c | 6337 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
5842a27b | 6338 | (Lisp_Object window) |
949cf20f | 6339 | { |
52162052 | 6340 | struct window *w = decode_live_window (window); |
d46c6df5 | 6341 | |
89bc0592 DA |
6342 | return list3 (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6343 | make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
6344 | WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) ? Qt : Qnil); | |
949cf20f KS |
6345 | } |
6346 | ||
6347 | ||
6348 | \f | |
6349 | /*********************************************************************** | |
6350 | Scroll bars | |
6351 | ***********************************************************************/ | |
6352 | ||
a7ca3326 | 6353 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, |
16a97296 | 6354 | Sset_window_scroll_bars, 2, 4, 0, |
949cf20f | 6355 | doc: /* Set width and type of scroll bars of window WINDOW. |
52162052 MR |
6356 | WINDOW must be a live window and defaults to the selected one. |
6357 | ||
949cf20f KS |
6358 | Second parameter WIDTH specifies the pixel width for the scroll bar; |
6359 | this is automatically adjusted to a multiple of the frame column width. | |
6360 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6361 | bar: left, right, or nil. | |
6b61353c | 6362 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6363 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6364 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
5842a27b | 6365 | (Lisp_Object window, Lisp_Object width, Lisp_Object vertical_type, Lisp_Object horizontal_type) |
949cf20f | 6366 | { |
52162052 | 6367 | struct window *w = decode_live_window (window); |
949cf20f KS |
6368 | |
6369 | if (!NILP (width)) | |
0f8fe9a2 | 6370 | { |
af5a5a98 | 6371 | CHECK_RANGED_INTEGER (width, 0, INT_MAX); |
949cf20f | 6372 | |
0f8fe9a2 SM |
6373 | if (XINT (width) == 0) |
6374 | vertical_type = Qnil; | |
6375 | } | |
949cf20f | 6376 | |
413a79ad | 6377 | if (!(NILP (vertical_type) |
0cc1039f | 6378 | || EQ (vertical_type, Qleft) |
6b61353c KH |
6379 | || EQ (vertical_type, Qright) |
6380 | || EQ (vertical_type, Qt))) | |
6381 | error ("Invalid type of vertical scroll bar"); | |
6382 | ||
d3d50620 DA |
6383 | if (!EQ (w->scroll_bar_width, width) |
6384 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
949cf20f | 6385 | { |
e8c17b81 PE |
6386 | wset_scroll_bar_width (w, width); |
6387 | wset_vertical_scroll_bar_type (w, vertical_type); | |
949cf20f KS |
6388 | |
6389 | adjust_window_margins (w); | |
6390 | ||
6391 | clear_glyph_matrix (w->current_matrix); | |
e8c17b81 | 6392 | wset_window_end_valid (w, Qnil); |
949cf20f KS |
6393 | |
6394 | ++windows_or_buffers_changed; | |
6395 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6396 | } | |
6397 | ||
6398 | return Qnil; | |
6399 | } | |
6400 | ||
6401 | ||
6402 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6403 | 0, 1, 0, | |
6404 | doc: /* Get width and type of scroll bars of window WINDOW. | |
52162052 MR |
6405 | WINDOW must be a live window and defaults to the selected one. |
6406 | ||
6b61353c KH |
6407 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6408 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6409 | value. */) | |
5842a27b | 6410 | (Lisp_Object window) |
949cf20f | 6411 | { |
52162052 | 6412 | struct window *w = decode_live_window (window); |
89bc0592 DA |
6413 | |
6414 | return list4 (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
949cf20f KS |
6415 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) |
6416 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
89bc0592 DA |
6417 | make_number (WINDOW_SCROLL_BAR_COLS (w)), |
6418 | w->vertical_scroll_bar_type, Qnil); | |
5500c422 GM |
6419 | } |
6420 | ||
6421 | ||
7ab12479 | 6422 | \f |
5500c422 GM |
6423 | /*********************************************************************** |
6424 | Smooth scrolling | |
6425 | ***********************************************************************/ | |
6426 | ||
0cc1039f | 6427 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 | 6428 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
49745b39 | 6429 | If WINDOW is omitted or nil, it defaults to the selected window. |
0cc1039f | 6430 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6431 | optional second arg PIXELS-P means value is measured in pixels. */) |
5842a27b | 6432 | (Lisp_Object window, Lisp_Object pixels_p) |
5500c422 | 6433 | { |
47004952 | 6434 | Lisp_Object result; |
1f76f6f5 MR |
6435 | struct window *w = decode_live_window (window); |
6436 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 6437 | |
5500c422 | 6438 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6439 | result = (NILP (pixels_p) |
6440 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6441 | : make_number (-w->vscroll)); | |
5500c422 | 6442 | else |
47004952 GM |
6443 | result = make_number (0); |
6444 | return result; | |
5500c422 GM |
6445 | } |
6446 | ||
6447 | ||
6448 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6449 | 2, 3, 0, |
fdb82f93 | 6450 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6451 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6452 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6453 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6454 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6455 | corresponds to an integral number of pixels. The return value is the | |
6456 | result of this rounding. | |
6457 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
5842a27b | 6458 | (Lisp_Object window, Lisp_Object vscroll, Lisp_Object pixels_p) |
5500c422 | 6459 | { |
1f76f6f5 MR |
6460 | struct window *w = decode_live_window (window); |
6461 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 6462 | |
b7826503 | 6463 | CHECK_NUMBER_OR_FLOAT (vscroll); |
177c0ea7 | 6464 | |
5500c422 GM |
6465 | if (FRAME_WINDOW_P (f)) |
6466 | { | |
6467 | int old_dy = w->vscroll; | |
177c0ea7 | 6468 | |
0cc1039f KS |
6469 | w->vscroll = - (NILP (pixels_p) |
6470 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6471 | : XFLOATINT (vscroll)); | |
47004952 | 6472 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6473 | |
e56263e5 KS |
6474 | if (w->vscroll != old_dy) |
6475 | { | |
6476 | /* Adjust glyph matrix of the frame if the virtual display | |
6477 | area becomes larger than before. */ | |
6478 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
6479 | adjust_glyphs (f); | |
177c0ea7 | 6480 | |
e56263e5 | 6481 | /* Prevent redisplay shortcuts. */ |
d3d50620 | 6482 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
e56263e5 | 6483 | } |
5500c422 | 6484 | } |
177c0ea7 | 6485 | |
0cc1039f | 6486 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 6487 | } |
177c0ea7 | 6488 | |
7bbb5782 GM |
6489 | \f |
6490 | /* Call FN for all leaf windows on frame F. FN is called with the | |
6491 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 6492 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 | 6493 | |
2f7c71a1 AS |
6494 | static void |
6495 | foreach_window (struct frame *f, int (*fn) (struct window *, void *), | |
6496 | void *user_data) | |
7bbb5782 | 6497 | { |
56f2de10 | 6498 | /* delete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
76fb556f YM |
6499 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) |
6500 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
6501 | } |
6502 | ||
6503 | ||
6504 | /* Helper function for foreach_window. Call FN for all leaf windows | |
6505 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 6506 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 6507 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 6508 | |
67492200 | 6509 | static int |
971de7fb | 6510 | foreach_window_1 (struct window *w, int (*fn) (struct window *, void *), void *user_data) |
7bbb5782 | 6511 | { |
67492200 | 6512 | int cont; |
177c0ea7 | 6513 | |
67492200 | 6514 | for (cont = 1; w && cont;) |
7bbb5782 | 6515 | { |
d3d50620 DA |
6516 | if (!NILP (w->hchild)) |
6517 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); | |
6518 | else if (!NILP (w->vchild)) | |
6519 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); | |
177c0ea7 | 6520 | else |
0f532a9a | 6521 | cont = fn (w, user_data); |
177c0ea7 | 6522 | |
d3d50620 | 6523 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
7bbb5782 | 6524 | } |
67492200 GM |
6525 | |
6526 | return cont; | |
7bbb5782 GM |
6527 | } |
6528 | ||
6529 | ||
6d194a45 | 6530 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 6531 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
6532 | the window start. */ |
6533 | ||
67492200 | 6534 | static int |
971de7fb | 6535 | freeze_window_start (struct window *w, void *freeze_p) |
7bbb5782 | 6536 | { |
08c1d235 SM |
6537 | if (MINI_WINDOW_P (w) |
6538 | || (WINDOWP (selected_window) /* Can be nil in corner cases. */ | |
6539 | && (w == XWINDOW (selected_window) | |
6540 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
6541 | && ! NILP (Vminibuf_scroll_window) | |
6542 | && w == XWINDOW (Vminibuf_scroll_window))))) | |
f95464e4 | 6543 | freeze_p = NULL; |
177c0ea7 | 6544 | |
f95464e4 | 6545 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 6546 | return 1; |
7bbb5782 GM |
6547 | } |
6548 | ||
6549 | ||
6550 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
6551 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
6552 | means freeze the window start. */ | |
6553 | ||
6554 | void | |
971de7fb | 6555 | freeze_window_starts (struct frame *f, int freeze_p) |
7bbb5782 | 6556 | { |
cbccabec | 6557 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 6558 | } |
5500c422 GM |
6559 | |
6560 | \f | |
6561 | /*********************************************************************** | |
6562 | Initialization | |
6563 | ***********************************************************************/ | |
6564 | ||
6198ccd0 MR |
6565 | /* Return 1 if window configurations CONFIGURATION1 and CONFIGURATION2 |
6566 | describe the same state of affairs. This is used by Fequal. | |
6567 | ||
f75d7a91 | 6568 | IGNORE_POSITIONS means ignore non-matching scroll positions |
6198ccd0 MR |
6569 | and the like. |
6570 | ||
e4769531 | 6571 | This ignores a couple of things like the dedication status of |
b6f67890 MR |
6572 | window, combination_limit and the like. This might have to be |
6573 | fixed. */ | |
cbff28e8 | 6574 | |
f75d7a91 PE |
6575 | bool |
6576 | compare_window_configurations (Lisp_Object configuration1, | |
6577 | Lisp_Object configuration2, | |
6578 | bool ignore_positions) | |
cbff28e8 RS |
6579 | { |
6580 | register struct save_window_data *d1, *d2; | |
6198ccd0 | 6581 | struct Lisp_Vector *sws1, *sws2; |
71f02bc5 | 6582 | ptrdiff_t i; |
cbff28e8 | 6583 | |
6198ccd0 MR |
6584 | CHECK_WINDOW_CONFIGURATION (configuration1); |
6585 | CHECK_WINDOW_CONFIGURATION (configuration2); | |
6586 | ||
6587 | d1 = (struct save_window_data *) XVECTOR (configuration1); | |
6588 | d2 = (struct save_window_data *) XVECTOR (configuration2); | |
6589 | sws1 = XVECTOR (d1->saved_windows); | |
6590 | sws2 = XVECTOR (d2->saved_windows); | |
6591 | ||
6592 | /* Frame settings must match. */ | |
6593 | if (d1->frame_cols != d2->frame_cols | |
6594 | || d1->frame_lines != d2->frame_lines | |
6595 | || d1->frame_menu_bar_lines != d2->frame_menu_bar_lines | |
6596 | || !EQ (d1->selected_frame, d2->selected_frame) | |
6597 | || !EQ (d1->current_buffer, d2->current_buffer) | |
6598 | || (!ignore_positions | |
6599 | && (!EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window) | |
6600 | || !EQ (d1->minibuf_selected_window, d2->minibuf_selected_window))) | |
6601 | || !EQ (d1->focus_frame, d2->focus_frame) | |
6602 | /* Verify that the two configurations have the same number of windows. */ | |
6603 | || sws1->header.size != sws2->header.size) | |
cbff28e8 | 6604 | return 0; |
cbff28e8 | 6605 | |
6198ccd0 | 6606 | for (i = 0; i < sws1->header.size; i++) |
cbff28e8 | 6607 | { |
6198ccd0 | 6608 | struct saved_window *sw1, *sw2; |
cbff28e8 | 6609 | |
6198ccd0 MR |
6610 | sw1 = SAVED_WINDOW_N (sws1, i); |
6611 | sw2 = SAVED_WINDOW_N (sws2, i); | |
6612 | ||
6613 | if ( | |
6614 | /* The "current" windows in the two configurations must | |
6615 | correspond to each other. */ | |
6616 | EQ (d1->current_window, sw1->window) | |
6617 | != EQ (d2->current_window, sw2->window) | |
6618 | /* Windows' buffers must match. */ | |
6619 | || !EQ (sw1->buffer, sw2->buffer) | |
6620 | || !EQ (sw1->left_col, sw2->left_col) | |
6621 | || !EQ (sw1->top_line, sw2->top_line) | |
6622 | || !EQ (sw1->total_cols, sw2->total_cols) | |
6623 | || !EQ (sw1->total_lines, sw2->total_lines) | |
6624 | || !EQ (sw1->display_table, sw2->display_table) | |
6625 | /* The next two disjuncts check the window structure for | |
6626 | equality. */ | |
6627 | || !EQ (sw1->parent, sw2->parent) | |
6628 | || !EQ (sw1->prev, sw2->prev) | |
6629 | || (!ignore_positions | |
6630 | && (!EQ (sw1->hscroll, sw2->hscroll) | |
6631 | || !EQ (sw1->min_hscroll, sw2->min_hscroll) | |
6632 | || !EQ (sw1->start_at_line_beg, sw2->start_at_line_beg) | |
6633 | || NILP (Fequal (sw1->start, sw2->start)) | |
6634 | || NILP (Fequal (sw1->pointm, sw2->pointm)) | |
6635 | || NILP (Fequal (sw1->mark, sw2->mark)))) | |
6636 | || !EQ (sw1->left_margin_cols, sw2->left_margin_cols) | |
6637 | || !EQ (sw1->right_margin_cols, sw2->right_margin_cols) | |
6638 | || !EQ (sw1->left_fringe_width, sw2->left_fringe_width) | |
6639 | || !EQ (sw1->right_fringe_width, sw2->right_fringe_width) | |
6640 | || !EQ (sw1->fringes_outside_margins, sw2->fringes_outside_margins) | |
6641 | || !EQ (sw1->scroll_bar_width, sw2->scroll_bar_width) | |
6642 | || !EQ (sw1->vertical_scroll_bar_type, sw2->vertical_scroll_bar_type)) | |
949cf20f | 6643 | return 0; |
cbff28e8 RS |
6644 | } |
6645 | ||
6646 | return 1; | |
6647 | } | |
2f8274be RS |
6648 | |
6649 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
6650 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
6651 | doc: /* Compare two window configurations as regards the structure of windows. |
6652 | This function ignores details such as the values of point and mark | |
6653 | and scrolling positions. */) | |
5842a27b | 6654 | (Lisp_Object x, Lisp_Object y) |
2f8274be RS |
6655 | { |
6656 | if (compare_window_configurations (x, y, 1)) | |
6657 | return Qt; | |
6658 | return Qnil; | |
6659 | } | |
cbff28e8 | 6660 | \f |
dfcf069d | 6661 | void |
971de7fb | 6662 | init_window_once (void) |
7ab12479 | 6663 | { |
3224dac1 | 6664 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
6665 | XSETFRAME (selected_frame, f); |
6666 | Vterminal_frame = selected_frame; | |
e69b0960 DA |
6667 | minibuf_window = f->minibuffer_window; |
6668 | selected_window = f->selected_window; | |
1ae1a37d | 6669 | last_nonminibuf_frame = f; |
5b03d3c0 RS |
6670 | |
6671 | window_initialized = 1; | |
7ab12479 JB |
6672 | } |
6673 | ||
67492200 | 6674 | void |
971de7fb | 6675 | init_window (void) |
67492200 GM |
6676 | { |
6677 | Vwindow_list = Qnil; | |
6678 | } | |
6679 | ||
dfcf069d | 6680 | void |
971de7fb | 6681 | syms_of_window (void) |
7ab12479 | 6682 | { |
cd3520a4 JB |
6683 | DEFSYM (Qscroll_up, "scroll-up"); |
6684 | DEFSYM (Qscroll_down, "scroll-down"); | |
6685 | DEFSYM (Qscroll_command, "scroll-command"); | |
a4b000fb JL |
6686 | |
6687 | Fput (Qscroll_up, Qscroll_command, Qt); | |
6688 | Fput (Qscroll_down, Qscroll_command, Qt); | |
6689 | ||
cd3520a4 JB |
6690 | DEFSYM (Qwindow_configuration_change_hook, "window-configuration-change-hook"); |
6691 | DEFSYM (Qwindowp, "windowp"); | |
6692 | DEFSYM (Qwindow_configuration_p, "window-configuration-p"); | |
6693 | DEFSYM (Qwindow_live_p, "window-live-p"); | |
52162052 | 6694 | DEFSYM (Qwindow_valid_p, "window-valid-p"); |
cd3520a4 JB |
6695 | DEFSYM (Qwindow_deletable_p, "window-deletable-p"); |
6696 | DEFSYM (Qdelete_window, "delete-window"); | |
5386012d MR |
6697 | DEFSYM (Qwindow_resize_root_window, "window--resize-root-window"); |
6698 | DEFSYM (Qwindow_resize_root_window_vertically, "window--resize-root-window-vertically"); | |
cd3520a4 JB |
6699 | DEFSYM (Qsafe, "safe"); |
6700 | DEFSYM (Qdisplay_buffer, "display-buffer"); | |
6701 | DEFSYM (Qreplace_buffer_in_windows, "replace-buffer-in-windows"); | |
6702 | DEFSYM (Qrecord_window_buffer, "record-window-buffer"); | |
6703 | DEFSYM (Qget_mru_window, "get-mru-window"); | |
5938d519 | 6704 | DEFSYM (Qwindow_size, "window-size"); |
cd3520a4 JB |
6705 | DEFSYM (Qtemp_buffer_show_hook, "temp-buffer-show-hook"); |
6706 | DEFSYM (Qabove, "above"); | |
6707 | DEFSYM (Qbelow, "below"); | |
6a6ee00d | 6708 | DEFSYM (Qclone_of, "clone-of"); |
b9e809c2 | 6709 | |
67492200 | 6710 | staticpro (&Vwindow_list); |
8bfb170b KS |
6711 | |
6712 | minibuf_selected_window = Qnil; | |
3dbab091 | 6713 | staticpro (&minibuf_selected_window); |
67492200 | 6714 | |
c876b227 | 6715 | window_scroll_pixel_based_preserve_x = -1; |
66fe93d1 | 6716 | window_scroll_pixel_based_preserve_y = -1; |
c876b227 SM |
6717 | window_scroll_preserve_hpos = -1; |
6718 | window_scroll_preserve_vpos = -1; | |
66d43aea | 6719 | |
29208e82 | 6720 | DEFVAR_LISP ("temp-buffer-show-function", Vtemp_buffer_show_function, |
fdb82f93 PJ |
6721 | doc: /* Non-nil means call as function to display a help buffer. |
6722 | The function is called with one argument, the buffer to be displayed. | |
6723 | Used by `with-output-to-temp-buffer'. | |
6724 | If this function is used, then it must do the entire job of showing | |
6725 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 | 6726 | Vtemp_buffer_show_function = Qnil; |
e10ac9f1 | 6727 | |
29208e82 | 6728 | DEFVAR_LISP ("minibuffer-scroll-window", Vminibuf_scroll_window, |
fdb82f93 | 6729 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
6730 | Vminibuf_scroll_window = Qnil; |
6731 | ||
29208e82 | 6732 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", mode_line_in_non_selected_windows, |
26124d5e | 6733 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
6734 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
6735 | is displayed in the `mode-line' face. */); | |
6736 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 6737 | |
29208e82 | 6738 | DEFVAR_LISP ("other-window-scroll-buffer", Vother_window_scroll_buffer, |
fdb82f93 | 6739 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
6740 | Vother_window_scroll_buffer = Qnil; |
6741 | ||
29208e82 | 6742 | DEFVAR_BOOL ("auto-window-vscroll", auto_window_vscroll_p, |
e10ac9f1 | 6743 | doc: /* Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); |
e56263e5 KS |
6744 | auto_window_vscroll_p = 1; |
6745 | ||
29208e82 | 6746 | DEFVAR_INT ("next-screen-context-lines", next_screen_context_lines, |
e10ac9f1 | 6747 | doc: /* Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
6748 | next_screen_context_lines = 2; |
6749 | ||
5500c422 | 6750 | DEFVAR_LISP ("scroll-preserve-screen-position", |
29208e82 | 6751 | Vscroll_preserve_screen_position, |
e10ac9f1 | 6752 | doc: /* Controls if scroll commands move point to keep its screen position unchanged. |
bdf4ec93 RS |
6753 | A value of nil means point does not keep its screen position except |
6754 | at the scroll margin or window boundary respectively. | |
6755 | A value of t means point keeps its screen position if the scroll | |
6756 | command moved it vertically out of the window, e.g. when scrolling | |
6757 | by full screens. | |
9013a7f8 | 6758 | Any other value means point always keeps its screen position. |
a4b000fb JL |
6759 | Scroll commands should have the `scroll-command' property |
6760 | on their symbols to be controlled by this variable. */); | |
5500c422 | 6761 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 6762 | |
29208e82 | 6763 | DEFVAR_LISP ("window-point-insertion-type", Vwindow_point_insertion_type, |
a1562258 SM |
6764 | doc: /* Type of marker to use for `window-point'. */); |
6765 | Vwindow_point_insertion_type = Qnil; | |
6766 | ||
543f5fb1 | 6767 | DEFVAR_LISP ("window-configuration-change-hook", |
29208e82 | 6768 | Vwindow_configuration_change_hook, |
fdb82f93 | 6769 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
6770 | The buffer-local part is run once per window, with the relevant window |
6771 | selected; while the global part is run only once for the modified frame, | |
6772 | with the relevant frame selected. */); | |
543f5fb1 RS |
6773 | Vwindow_configuration_change_hook = Qnil; |
6774 | ||
29208e82 | 6775 | DEFVAR_LISP ("recenter-redisplay", Vrecenter_redisplay, |
61d4b438 MR |
6776 | doc: /* Non-nil means `recenter' redraws entire frame. |
6777 | If this option is non-nil, then the `recenter' command with a nil | |
6778 | argument will redraw the entire frame; the special value `tty' causes | |
6779 | the frame to be redrawn only if it is a tty frame. */); | |
666e158e MB |
6780 | Vrecenter_redisplay = Qtty; |
6781 | ||
a0c2d0ae | 6782 | DEFVAR_LISP ("window-combination-resize", Vwindow_combination_resize, |
454592a6 | 6783 | doc: /* If t, resize window combinations proportionally. |
1a13852e | 6784 | If this variable is nil, splitting a window gets the entire screen space |
a0c2d0ae | 6785 | for displaying the new window from the window to split. Deleting and |
df85d315 | 6786 | resizing a window preferably resizes one adjacent window only. |
a0c2d0ae | 6787 | |
454592a6 | 6788 | If this variable is t, splitting a window tries to get the space |
a0c2d0ae MR |
6789 | proportionally from all windows in the same combination. This also |
6790 | allows to split a window that is otherwise too small or of fixed size. | |
6791 | Resizing and deleting a window proportionally resize all windows in the | |
6792 | same combination. | |
1a13852e | 6793 | |
454592a6 MR |
6794 | Other values are reserved for future use. |
6795 | ||
b6f67890 | 6796 | This variable takes no effect if `window-combination-limit' is non-nil. */); |
a0c2d0ae | 6797 | Vwindow_combination_resize = Qnil; |
1a13852e | 6798 | |
b6f67890 | 6799 | DEFVAR_LISP ("window-combination-limit", Vwindow_combination_limit, |
8e17c9ba MR |
6800 | doc: /* If non-nil, splitting a window makes a new parent window. |
6801 | The following values are recognized: | |
1a13852e | 6802 | |
8e17c9ba | 6803 | nil means splitting a window will create a new parent window only if the |
5938d519 MR |
6804 | window has no parent window or the window shall become part of a |
6805 | combination orthogonal to the one it is part of. | |
1a13852e | 6806 | |
5938d519 MR |
6807 | `window-size' means that splitting a window for displaying a buffer |
6808 | makes a new parent window provided `display-buffer' is supposed to | |
6809 | explicitly set the window's size due to the presence of a | |
6810 | `window-height' or `window-width' entry in the alist used by | |
6811 | `display-buffer'. Otherwise, this value is handled like nil. | |
8e17c9ba MR |
6812 | |
6813 | `temp-buffer' means that splitting a window for displaying a temporary | |
6814 | buffer always makes a new parent window. Otherwise, this value is | |
6815 | handled like nil. | |
6816 | ||
8e17c9ba MR |
6817 | `display-buffer' means that splitting a window for displaying a buffer |
6818 | always makes a new parent window. Since temporary buffers are | |
6819 | displayed by the function `display-buffer', this value is stronger | |
6820 | than `temp-buffer'. Splitting a window for other purpose makes a | |
6821 | new parent window only if needed. | |
6822 | ||
6823 | t means that splitting a window always creates a new parent window. If | |
6824 | all splits behave this way, each frame's window tree is a binary | |
6825 | tree and every window but the frame's root window has exactly one | |
6826 | sibling. | |
1a13852e | 6827 | |
8e17c9ba | 6828 | Other values are reserved for future use. */); |
5938d519 | 6829 | Vwindow_combination_limit = Qwindow_size; |
666e158e | 6830 | |
6a6ee00d MR |
6831 | DEFVAR_LISP ("window-persistent-parameters", Vwindow_persistent_parameters, |
6832 | doc: /* Alist of persistent window parameters. | |
34a02f46 MR |
6833 | This alist specifies which window parameters shall get saved by |
6834 | `current-window-configuration' and `window-state-get' and subsequently | |
6835 | restored to their previous values by `set-window-configuration' and | |
6836 | `window-state-put'. | |
6a6ee00d MR |
6837 | |
6838 | The car of each entry of this alist is the symbol specifying the | |
6839 | parameter. The cdr is one of the following: | |
6840 | ||
34a02f46 MR |
6841 | nil means the parameter is neither saved by `window-state-get' nor by |
6842 | `current-window-configuration'. | |
6a6ee00d | 6843 | |
34a02f46 MR |
6844 | t means the parameter is saved by `current-window-configuration' and, |
6845 | provided its WRITABLE argument is nil, by `window-state-get'. | |
6a6ee00d | 6846 | |
34a02f46 MR |
6847 | The symbol `writable' means the parameter is saved unconditionally by |
6848 | both `current-window-configuration' and `window-state-get'. Do not use | |
6849 | this value for parameters without read syntax (like windows or frames). | |
6a6ee00d MR |
6850 | |
6851 | Parameters not saved by `current-window-configuration' or | |
6852 | `window-state-get' are left alone by `set-window-configuration' | |
6853 | respectively are not installed by `window-state-put'. */); | |
34a02f46 | 6854 | Vwindow_persistent_parameters = list1 (Fcons (Qclone_of, Qt)); |
6a6ee00d | 6855 | |
7ab12479 JB |
6856 | defsubr (&Sselected_window); |
6857 | defsubr (&Sminibuffer_window); | |
6858 | defsubr (&Swindow_minibuffer_p); | |
6859 | defsubr (&Swindowp); | |
52162052 | 6860 | defsubr (&Swindow_valid_p); |
806b4d9b | 6861 | defsubr (&Swindow_live_p); |
727e958e MR |
6862 | defsubr (&Swindow_frame); |
6863 | defsubr (&Sframe_root_window); | |
6864 | defsubr (&Sframe_first_window); | |
6865 | defsubr (&Sframe_selected_window); | |
6866 | defsubr (&Sset_frame_selected_window); | |
7ab12479 | 6867 | defsubr (&Spos_visible_in_window_p); |
536833ab | 6868 | defsubr (&Swindow_line_height); |
7ab12479 | 6869 | defsubr (&Swindow_buffer); |
bf60a96b | 6870 | defsubr (&Swindow_parent); |
d68443dc MR |
6871 | defsubr (&Swindow_top_child); |
6872 | defsubr (&Swindow_left_child); | |
6873 | defsubr (&Swindow_next_sibling); | |
6874 | defsubr (&Swindow_prev_sibling); | |
b6f67890 MR |
6875 | defsubr (&Swindow_combination_limit); |
6876 | defsubr (&Sset_window_combination_limit); | |
abde8f8c MR |
6877 | defsubr (&Swindow_use_time); |
6878 | defsubr (&Swindow_top_line); | |
6879 | defsubr (&Swindow_left_column); | |
105216ed CY |
6880 | defsubr (&Swindow_total_height); |
6881 | defsubr (&Swindow_total_width); | |
496e208e MR |
6882 | defsubr (&Swindow_normal_size); |
6883 | defsubr (&Swindow_new_total); | |
6884 | defsubr (&Swindow_new_normal); | |
6885 | defsubr (&Sset_window_new_total); | |
6886 | defsubr (&Sset_window_new_normal); | |
d615d6d2 | 6887 | defsubr (&Swindow_resize_apply); |
105216ed CY |
6888 | defsubr (&Swindow_body_height); |
6889 | defsubr (&Swindow_body_width); | |
7ab12479 JB |
6890 | defsubr (&Swindow_hscroll); |
6891 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
6892 | defsubr (&Swindow_redisplay_end_trigger); |
6893 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 6894 | defsubr (&Swindow_edges); |
c99a9eb3 | 6895 | defsubr (&Swindow_pixel_edges); |
9d5405ec | 6896 | defsubr (&Swindow_absolute_pixel_edges); |
c99a9eb3 RS |
6897 | defsubr (&Swindow_inside_edges); |
6898 | defsubr (&Swindow_inside_pixel_edges); | |
9d5405ec | 6899 | defsubr (&Swindow_inside_absolute_pixel_edges); |
d5783c40 JB |
6900 | defsubr (&Scoordinates_in_window_p); |
6901 | defsubr (&Swindow_at); | |
7ab12479 JB |
6902 | defsubr (&Swindow_point); |
6903 | defsubr (&Swindow_start); | |
6904 | defsubr (&Swindow_end); | |
6905 | defsubr (&Sset_window_point); | |
6906 | defsubr (&Sset_window_start); | |
6907 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 6908 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
6909 | defsubr (&Swindow_display_table); |
6910 | defsubr (&Sset_window_display_table); | |
6911 | defsubr (&Snext_window); | |
6912 | defsubr (&Sprevious_window); | |
7ab12479 | 6913 | defsubr (&Sget_buffer_window); |
1a13852e MR |
6914 | defsubr (&Sdelete_other_windows_internal); |
6915 | defsubr (&Sdelete_window_internal); | |
6916 | defsubr (&Sresize_mini_window_internal); | |
7ab12479 | 6917 | defsubr (&Sset_window_buffer); |
1a13852e | 6918 | defsubr (&Srun_window_configuration_change_hook); |
7ab12479 | 6919 | defsubr (&Sselect_window); |
6b61353c | 6920 | defsubr (&Sforce_window_update); |
1a13852e | 6921 | defsubr (&Ssplit_window_internal); |
7ab12479 JB |
6922 | defsubr (&Sscroll_up); |
6923 | defsubr (&Sscroll_down); | |
6924 | defsubr (&Sscroll_left); | |
6925 | defsubr (&Sscroll_right); | |
ccd0664b | 6926 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 6927 | defsubr (&Sscroll_other_window); |
fa832261 | 6928 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 6929 | defsubr (&Srecenter); |
81fe0836 | 6930 | defsubr (&Swindow_text_height); |
7ab12479 JB |
6931 | defsubr (&Smove_to_window_line); |
6932 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 6933 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
6934 | defsubr (&Sset_window_configuration); |
6935 | defsubr (&Scurrent_window_configuration); | |
5500c422 GM |
6936 | defsubr (&Sset_window_margins); |
6937 | defsubr (&Swindow_margins); | |
949cf20f KS |
6938 | defsubr (&Sset_window_fringes); |
6939 | defsubr (&Swindow_fringes); | |
6940 | defsubr (&Sset_window_scroll_bars); | |
6941 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
6942 | defsubr (&Swindow_vscroll); |
6943 | defsubr (&Sset_window_vscroll); | |
2f8274be | 6944 | defsubr (&Scompare_window_configurations); |
67492200 | 6945 | defsubr (&Swindow_list); |
abde8f8c | 6946 | defsubr (&Swindow_list_1); |
496e208e MR |
6947 | defsubr (&Swindow_prev_buffers); |
6948 | defsubr (&Sset_window_prev_buffers); | |
6949 | defsubr (&Swindow_next_buffers); | |
6950 | defsubr (&Sset_window_next_buffers); | |
cfbb2395 JB |
6951 | defsubr (&Swindow_parameters); |
6952 | defsubr (&Swindow_parameter); | |
6953 | defsubr (&Sset_window_parameter); | |
7ab12479 JB |
6954 | } |
6955 | ||
dfcf069d | 6956 | void |
971de7fb | 6957 | keys_of_window (void) |
7ab12479 | 6958 | { |
7ab12479 JB |
6959 | initial_define_key (control_x_map, '<', "scroll-left"); |
6960 | initial_define_key (control_x_map, '>', "scroll-right"); | |
6961 | ||
32129746 | 6962 | initial_define_key (global_map, Ctl ('V'), "scroll-up-command"); |
7ab12479 | 6963 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); |
32129746 | 6964 | initial_define_key (meta_map, 'v', "scroll-down-command"); |
7ab12479 | 6965 | } |