Commit | Line | Data |
---|---|---|
7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
ab422c4d PE |
3 | Copyright (C) 1985-1987, 1993-1998, 2000-2013 Free Software |
4 | Foundation, Inc. | |
7ab12479 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
7ab12479 | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
7ab12479 JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
7ab12479 | 20 | |
18160b98 | 21 | #include <config.h> |
e8c17b81 PE |
22 | |
23 | #define WINDOW_INLINE EXTERN_INLINE | |
24 | ||
4d553a13 KL |
25 | #include <stdio.h> |
26 | ||
7ab12479 | 27 | #include "lisp.h" |
e5560ff7 | 28 | #include "character.h" |
7ab12479 | 29 | #include "buffer.h" |
3e4731a3 | 30 | #include "keyboard.h" |
e35f6ff7 | 31 | #include "keymap.h" |
44fa5b1e | 32 | #include "frame.h" |
7ab12479 JB |
33 | #include "window.h" |
34 | #include "commands.h" | |
35 | #include "indent.h" | |
36 | #include "termchar.h" | |
37 | #include "disptab.h" | |
dfcf069d | 38 | #include "dispextern.h" |
5500c422 GM |
39 | #include "blockinput.h" |
40 | #include "intervals.h" | |
de509a60 | 41 | #include "termhooks.h" /* For FRAME_TERMINAL. */ |
5500c422 | 42 | |
6d55d620 | 43 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 44 | #include "xterm.h" |
5500c422 | 45 | #endif /* HAVE_X_WINDOWS */ |
0fda9b75 | 46 | #ifdef HAVE_NTGUI |
8f23f280 AI |
47 | #include "w32term.h" |
48 | #endif | |
1e3c8885 EZ |
49 | #ifdef MSDOS |
50 | #include "msdos.h" | |
51 | #endif | |
edfda783 AR |
52 | #ifdef HAVE_NS |
53 | #include "nsterm.h" | |
54 | #endif | |
5500c422 | 55 | |
b52d6985 PE |
56 | Lisp_Object Qwindowp, Qwindow_live_p; |
57 | static Lisp_Object Qwindow_valid_p; | |
b9e809c2 | 58 | static Lisp_Object Qwindow_configuration_p, Qrecord_window_buffer; |
9397e56f | 59 | static Lisp_Object Qwindow_deletable_p, Qdelete_window, Qdisplay_buffer; |
b9e809c2 | 60 | static Lisp_Object Qreplace_buffer_in_windows, Qget_mru_window; |
5386012d | 61 | static Lisp_Object Qwindow_resize_root_window, Qwindow_resize_root_window_vertically; |
955cbe7b | 62 | static Lisp_Object Qscroll_up, Qscroll_down, Qscroll_command; |
5938d519 | 63 | static Lisp_Object Qsafe, Qabove, Qbelow, Qwindow_size, Qclone_of; |
b9e809c2 | 64 | |
f57e2426 | 65 | static int displayed_window_lines (struct window *); |
f57e2426 J |
66 | static int count_windows (struct window *); |
67 | static int get_leaf_windows (struct window *, struct window **, int); | |
d311d28c | 68 | static void window_scroll (Lisp_Object, EMACS_INT, int, int); |
f57e2426 J |
69 | static void window_scroll_pixel_based (Lisp_Object, int, int, int); |
70 | static void window_scroll_line_based (Lisp_Object, int, int, int); | |
f57e2426 | 71 | static int freeze_window_start (struct window *, void *); |
f57e2426 J |
72 | static Lisp_Object window_list (void); |
73 | static int add_window_to_list (struct window *, void *); | |
74 | static int candidate_window_p (Lisp_Object, Lisp_Object, Lisp_Object, | |
75 | Lisp_Object); | |
76 | static Lisp_Object next_window (Lisp_Object, Lisp_Object, | |
77 | Lisp_Object, int); | |
78 | static void decode_next_window_args (Lisp_Object *, Lisp_Object *, | |
79 | Lisp_Object *); | |
2f7c71a1 | 80 | static void foreach_window (struct frame *, |
f95464e4 | 81 | int (* fn) (struct window *, void *), |
2f7c71a1 | 82 | void *); |
f57e2426 J |
83 | static int foreach_window_1 (struct window *, |
84 | int (* fn) (struct window *, void *), | |
85 | void *); | |
86 | static Lisp_Object window_list_1 (Lisp_Object, Lisp_Object, Lisp_Object); | |
748fa866 DA |
87 | static int window_resize_check (struct window *, bool); |
88 | static void window_resize_apply (struct window *, bool); | |
7c82f3e2 | 89 | static Lisp_Object select_window (Lisp_Object, Lisp_Object, int); |
12384b01 | 90 | static void select_window_1 (Lisp_Object, bool); |
b7354ddf | 91 | |
7ab12479 JB |
92 | /* This is the window in which the terminal's cursor should |
93 | be left when nothing is being done with it. This must | |
94 | always be a leaf window, and its buffer is selected by | |
95 | the top level editing loop at the end of each command. | |
96 | ||
97 | This value is always the same as | |
44fa5b1e | 98 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
99 | Lisp_Object selected_window; |
100 | ||
67492200 GM |
101 | /* A list of all windows for use by next_window and Fwindow_list. |
102 | Functions creating or deleting windows should invalidate this cache | |
103 | by setting it to nil. */ | |
67492200 GM |
104 | Lisp_Object Vwindow_list; |
105 | ||
5500c422 GM |
106 | /* The mini-buffer window of the selected frame. |
107 | Note that you cannot test for mini-bufferness of an arbitrary window | |
108 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 JB |
109 | the selected window. */ |
110 | Lisp_Object minibuf_window; | |
111 | ||
3f49fddc KS |
112 | /* Non-nil means it is the window whose mode line should be |
113 | shown as the selected window when the minibuffer is selected. */ | |
3dbab091 | 114 | Lisp_Object minibuf_selected_window; |
3f49fddc | 115 | |
a58ec57d | 116 | /* Hook run at end of temp_output_buffer_show. */ |
955cbe7b | 117 | static Lisp_Object Qtemp_buffer_show_hook; |
a58ec57d | 118 | |
5b03d3c0 RS |
119 | /* Nonzero after init_window_once has finished. */ |
120 | static int window_initialized; | |
121 | ||
543f5fb1 | 122 | /* Hook to run when window config changes. */ |
eeca6f6f | 123 | static Lisp_Object Qwindow_configuration_change_hook; |
0d384044 | 124 | |
66d43aea | 125 | /* Used by the function window_scroll_pixel_based */ |
c876b227 | 126 | static int window_scroll_pixel_based_preserve_x; |
66fe93d1 | 127 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 128 | |
c876b227 | 129 | /* Same for window_scroll_line_based. */ |
d311d28c PE |
130 | static EMACS_INT window_scroll_preserve_hpos; |
131 | static EMACS_INT window_scroll_preserve_vpos; | |
f230ecc9 | 132 | \f |
e8c17b81 | 133 | /* These setters are used only in this file, so they can be private. */ |
b0ab8123 | 134 | static void |
e8c17b81 PE |
135 | wset_combination_limit (struct window *w, Lisp_Object val) |
136 | { | |
137 | w->combination_limit = val; | |
138 | } | |
b0ab8123 | 139 | static void |
e8c17b81 PE |
140 | wset_dedicated (struct window *w, Lisp_Object val) |
141 | { | |
142 | w->dedicated = val; | |
143 | } | |
b0ab8123 | 144 | static void |
e8c17b81 PE |
145 | wset_display_table (struct window *w, Lisp_Object val) |
146 | { | |
147 | w->display_table = val; | |
148 | } | |
b0ab8123 | 149 | static void |
e8c17b81 PE |
150 | wset_hchild (struct window *w, Lisp_Object val) |
151 | { | |
152 | w->hchild = val; | |
153 | } | |
b0ab8123 | 154 | static void |
e8c17b81 PE |
155 | wset_left_fringe_width (struct window *w, Lisp_Object val) |
156 | { | |
157 | w->left_fringe_width = val; | |
158 | } | |
b0ab8123 | 159 | static void |
e8c17b81 PE |
160 | wset_left_margin_cols (struct window *w, Lisp_Object val) |
161 | { | |
162 | w->left_margin_cols = val; | |
163 | } | |
b0ab8123 | 164 | static void |
e8c17b81 PE |
165 | wset_new_normal (struct window *w, Lisp_Object val) |
166 | { | |
167 | w->new_normal = val; | |
168 | } | |
b0ab8123 | 169 | static void |
e8c17b81 PE |
170 | wset_new_total (struct window *w, Lisp_Object val) |
171 | { | |
172 | w->new_total = val; | |
173 | } | |
b0ab8123 | 174 | static void |
e8c17b81 PE |
175 | wset_normal_cols (struct window *w, Lisp_Object val) |
176 | { | |
177 | w->normal_cols = val; | |
178 | } | |
b0ab8123 | 179 | static void |
e8c17b81 PE |
180 | wset_normal_lines (struct window *w, Lisp_Object val) |
181 | { | |
182 | w->normal_lines = val; | |
183 | } | |
b0ab8123 | 184 | static void |
e8c17b81 PE |
185 | wset_parent (struct window *w, Lisp_Object val) |
186 | { | |
187 | w->parent = val; | |
188 | } | |
b0ab8123 | 189 | static void |
e8c17b81 PE |
190 | wset_pointm (struct window *w, Lisp_Object val) |
191 | { | |
192 | w->pointm = val; | |
193 | } | |
b0ab8123 | 194 | static void |
e8c17b81 PE |
195 | wset_right_fringe_width (struct window *w, Lisp_Object val) |
196 | { | |
197 | w->right_fringe_width = val; | |
198 | } | |
b0ab8123 | 199 | static void |
e8c17b81 PE |
200 | wset_right_margin_cols (struct window *w, Lisp_Object val) |
201 | { | |
202 | w->right_margin_cols = val; | |
203 | } | |
b0ab8123 | 204 | static void |
e8c17b81 PE |
205 | wset_scroll_bar_width (struct window *w, Lisp_Object val) |
206 | { | |
207 | w->scroll_bar_width = val; | |
208 | } | |
b0ab8123 | 209 | static void |
e8c17b81 PE |
210 | wset_start (struct window *w, Lisp_Object val) |
211 | { | |
212 | w->start = val; | |
213 | } | |
b0ab8123 | 214 | static void |
e8c17b81 PE |
215 | wset_temslot (struct window *w, Lisp_Object val) |
216 | { | |
217 | w->temslot = val; | |
218 | } | |
b0ab8123 | 219 | static void |
e8c17b81 PE |
220 | wset_vchild (struct window *w, Lisp_Object val) |
221 | { | |
222 | w->vchild = val; | |
223 | } | |
b0ab8123 | 224 | static void |
e8c17b81 PE |
225 | wset_vertical_scroll_bar_type (struct window *w, Lisp_Object val) |
226 | { | |
227 | w->vertical_scroll_bar_type = val; | |
228 | } | |
b0ab8123 | 229 | static void |
e8c17b81 PE |
230 | wset_window_parameters (struct window *w, Lisp_Object val) |
231 | { | |
232 | w->window_parameters = val; | |
233 | } | |
234 | ||
52162052 MR |
235 | struct window * |
236 | decode_live_window (register Lisp_Object window) | |
f230ecc9 MR |
237 | { |
238 | if (NILP (window)) | |
239 | return XWINDOW (selected_window); | |
c876b227 | 240 | |
f230ecc9 MR |
241 | CHECK_LIVE_WINDOW (window); |
242 | return XWINDOW (window); | |
243 | } | |
244 | ||
b9e9df47 | 245 | struct window * |
f230ecc9 MR |
246 | decode_any_window (register Lisp_Object window) |
247 | { | |
6e5d1c12 CY |
248 | struct window *w; |
249 | ||
f230ecc9 MR |
250 | if (NILP (window)) |
251 | return XWINDOW (selected_window); | |
252 | ||
253 | CHECK_WINDOW (window); | |
6e5d1c12 | 254 | w = XWINDOW (window); |
6e5d1c12 | 255 | return w; |
f230ecc9 | 256 | } |
666e158e | 257 | |
b52d6985 | 258 | static struct window * |
52162052 MR |
259 | decode_valid_window (register Lisp_Object window) |
260 | { | |
261 | struct window *w; | |
262 | ||
263 | if (NILP (window)) | |
264 | return XWINDOW (selected_window); | |
265 | ||
266 | CHECK_VALID_WINDOW (window); | |
267 | w = XWINDOW (window); | |
268 | return w; | |
269 | } | |
270 | ||
98a07056 DA |
271 | /* Called when W's buffer slot is changed. ARG -1 means that W is about to |
272 | cease its buffer, and 1 means that W is about to set up the new one. */ | |
273 | ||
274 | static void | |
275 | adjust_window_count (struct window *w, int arg) | |
276 | { | |
277 | eassert (eabs (arg) == 1); | |
278 | if (BUFFERP (w->buffer)) | |
279 | { | |
280 | struct buffer *b = XBUFFER (w->buffer); | |
3f781c75 | 281 | |
98a07056 DA |
282 | if (b->base_buffer) |
283 | b = b->base_buffer; | |
284 | b->window_count += arg; | |
285 | eassert (b->window_count >= 0); | |
422ff52b | 286 | /* These should be recalculated by redisplay code. */ |
9d93ce29 | 287 | w->window_end_valid = 0; |
422ff52b | 288 | w->base_line_pos = 0; |
98a07056 DA |
289 | } |
290 | } | |
291 | ||
292 | /* Set W's buffer slot to VAL and recompute number | |
293 | of windows showing VAL if it is a buffer. */ | |
294 | ||
295 | void | |
296 | wset_buffer (struct window *w, Lisp_Object val) | |
297 | { | |
298 | adjust_window_count (w, -1); | |
299 | w->buffer = val; | |
300 | adjust_window_count (w, 1); | |
301 | } | |
302 | ||
7ab12479 | 303 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, |
f230ecc9 | 304 | doc: /* Return t if OBJECT is a window and nil otherwise. */) |
5842a27b | 305 | (Lisp_Object object) |
7ab12479 | 306 | { |
413430c5 | 307 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
308 | } |
309 | ||
52162052 MR |
310 | DEFUN ("window-valid-p", Fwindow_valid_p, Swindow_valid_p, 1, 1, 0, |
311 | doc: /* Return t if OBJECT is a valid window and nil otherwise. | |
312 | A valid window is either a window that displays a buffer or an internal | |
313 | window. Deleted windows are not live. */) | |
314 | (Lisp_Object object) | |
315 | { | |
316 | return WINDOW_VALID_P (object) ? Qt : Qnil; | |
317 | } | |
318 | ||
806b4d9b | 319 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
f230ecc9 | 320 | doc: /* Return t if OBJECT is a live window and nil otherwise. |
49745b39 CY |
321 | A live window is a window that displays a buffer. |
322 | Internal windows and deleted windows are not live. */) | |
5842a27b | 323 | (Lisp_Object object) |
605be8af | 324 | { |
9e571f49 | 325 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af | 326 | } |
727e958e MR |
327 | \f |
328 | /* Frames and windows. */ | |
89bc0592 | 329 | DEFUN ("window-frame", Fwindow_frame, Swindow_frame, 0, 1, 0, |
727e958e | 330 | doc: /* Return the frame that window WINDOW is on. |
52162052 | 331 | WINDOW must be a valid window and defaults to the selected one. */) |
727e958e MR |
332 | (Lisp_Object window) |
333 | { | |
52162052 | 334 | return decode_valid_window (window)->frame; |
727e958e MR |
335 | } |
336 | ||
337 | DEFUN ("frame-root-window", Fframe_root_window, Sframe_root_window, 0, 1, 0, | |
87e68db4 JB |
338 | doc: /* Return the root window of FRAME-OR-WINDOW. |
339 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
49745b39 CY |
340 | With a frame argument, return that frame's root window. |
341 | With a window argument, return the root window of that window's frame. */) | |
727e958e MR |
342 | (Lisp_Object frame_or_window) |
343 | { | |
344 | Lisp_Object window; | |
345 | ||
346 | if (NILP (frame_or_window)) | |
e69b0960 | 347 | window = SELECTED_FRAME ()->root_window; |
52162052 MR |
348 | else if (WINDOW_VALID_P (frame_or_window)) |
349 | window = XFRAME (XWINDOW (frame_or_window)->frame)->root_window; | |
727e958e MR |
350 | else |
351 | { | |
352 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 353 | window = XFRAME (frame_or_window)->root_window; |
727e958e MR |
354 | } |
355 | ||
356 | return window; | |
357 | } | |
358 | ||
359 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, | |
49745b39 CY |
360 | doc: /* Return the minibuffer window for frame FRAME. |
361 | If FRAME is omitted or nil, it defaults to the selected frame. */) | |
727e958e MR |
362 | (Lisp_Object frame) |
363 | { | |
d9f07150 | 364 | return FRAME_MINIBUF_WINDOW (decode_live_frame (frame)); |
727e958e MR |
365 | } |
366 | ||
367 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, | |
368 | Swindow_minibuffer_p, 0, 1, 0, | |
369 | doc: /* Return non-nil if WINDOW is a minibuffer window. | |
52162052 | 370 | WINDOW must be a valid window and defaults to the selected one. */) |
727e958e MR |
371 | (Lisp_Object window) |
372 | { | |
52162052 | 373 | return MINI_WINDOW_P (decode_valid_window (window)) ? Qt : Qnil; |
727e958e MR |
374 | } |
375 | ||
376 | /* Don't move this to window.el - this must be a safe routine. */ | |
377 | DEFUN ("frame-first-window", Fframe_first_window, Sframe_first_window, 0, 1, 0, | |
87e68db4 JB |
378 | doc: /* Return the topmost, leftmost live window on FRAME-OR-WINDOW. |
379 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
52162052 MR |
380 | Else if FRAME-OR-WINDOW denotes a valid window, return the first window |
381 | of that window's frame. If FRAME-OR-WINDOW denotes a live frame, return | |
727e958e MR |
382 | the first window of that frame. */) |
383 | (Lisp_Object frame_or_window) | |
384 | { | |
385 | Lisp_Object window; | |
386 | ||
387 | if (NILP (frame_or_window)) | |
e69b0960 | 388 | window = SELECTED_FRAME ()->root_window; |
52162052 | 389 | else if (WINDOW_VALID_P (frame_or_window)) |
e69b0960 | 390 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window; |
727e958e MR |
391 | else |
392 | { | |
393 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 394 | window = XFRAME (frame_or_window)->root_window; |
727e958e MR |
395 | } |
396 | ||
d3d50620 | 397 | while (NILP (XWINDOW (window)->buffer)) |
727e958e | 398 | { |
d3d50620 DA |
399 | if (! NILP (XWINDOW (window)->hchild)) |
400 | window = XWINDOW (window)->hchild; | |
401 | else if (! NILP (XWINDOW (window)->vchild)) | |
402 | window = XWINDOW (window)->vchild; | |
727e958e | 403 | else |
1088b922 | 404 | emacs_abort (); |
727e958e MR |
405 | } |
406 | ||
407 | return window; | |
408 | } | |
409 | ||
410 | DEFUN ("frame-selected-window", Fframe_selected_window, | |
411 | Sframe_selected_window, 0, 1, 0, | |
87e68db4 JB |
412 | doc: /* Return the selected window of FRAME-OR-WINDOW. |
413 | If omitted, FRAME-OR-WINDOW defaults to the currently selected frame. | |
52162052 MR |
414 | Else if FRAME-OR-WINDOW denotes a valid window, return the selected |
415 | window of that window's frame. If FRAME-OR-WINDOW denotes a live frame, | |
416 | return the selected window of that frame. */) | |
727e958e MR |
417 | (Lisp_Object frame_or_window) |
418 | { | |
419 | Lisp_Object window; | |
420 | ||
421 | if (NILP (frame_or_window)) | |
e69b0960 | 422 | window = SELECTED_FRAME ()->selected_window; |
52162052 | 423 | else if (WINDOW_VALID_P (frame_or_window)) |
e69b0960 | 424 | window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->selected_window; |
727e958e MR |
425 | else |
426 | { | |
427 | CHECK_LIVE_FRAME (frame_or_window); | |
e69b0960 | 428 | window = XFRAME (frame_or_window)->selected_window; |
727e958e MR |
429 | } |
430 | ||
431 | return window; | |
432 | } | |
433 | ||
434 | DEFUN ("set-frame-selected-window", Fset_frame_selected_window, | |
435 | Sset_frame_selected_window, 2, 3, 0, | |
436 | doc: /* Set selected window of FRAME to WINDOW. | |
437 | FRAME must be a live frame and defaults to the selected one. If FRAME | |
438 | is the selected frame, this makes WINDOW the selected window. Optional | |
439 | argument NORECORD non-nil means to neither change the order of recently | |
440 | selected windows nor the buffer list. WINDOW must denote a live window. | |
441 | Return WINDOW. */) | |
442 | (Lisp_Object frame, Lisp_Object window, Lisp_Object norecord) | |
443 | { | |
444 | if (NILP (frame)) | |
445 | frame = selected_frame; | |
446 | ||
447 | CHECK_LIVE_FRAME (frame); | |
448 | CHECK_LIVE_WINDOW (window); | |
449 | ||
450 | if (! EQ (frame, WINDOW_FRAME (XWINDOW (window)))) | |
451 | error ("In `set-frame-selected-window', WINDOW is not on FRAME"); | |
452 | ||
453 | if (EQ (frame, selected_frame)) | |
454 | return Fselect_window (window, norecord); | |
455 | else | |
f00af5b1 PE |
456 | { |
457 | fset_selected_window (XFRAME (frame), window); | |
458 | return window; | |
459 | } | |
727e958e MR |
460 | } |
461 | ||
462 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
463 | doc: /* Return the selected window. | |
464 | The selected window is the window in which the standard cursor for | |
465 | selected windows appears and to which many commands apply. */) | |
466 | (void) | |
467 | { | |
468 | return selected_window; | |
469 | } | |
470 | ||
9397e56f MR |
471 | int window_select_count; |
472 | ||
727e958e MR |
473 | /* If select_window is called with inhibit_point_swap non-zero it will |
474 | not store point of the old selected window's buffer back into that | |
475 | window's pointm slot. This is needed by Fset_window_configuration to | |
476 | avoid that the display routine is called with selected_window set to | |
477 | Qnil causing a subsequent crash. */ | |
478 | static Lisp_Object | |
479 | select_window (Lisp_Object window, Lisp_Object norecord, int inhibit_point_swap) | |
480 | { | |
481 | register struct window *w; | |
727e958e MR |
482 | struct frame *sf; |
483 | ||
484 | CHECK_LIVE_WINDOW (window); | |
485 | ||
486 | w = XWINDOW (window); | |
487 | w->frozen_window_start_p = 0; | |
488 | ||
489 | if (NILP (norecord)) | |
490 | { | |
45942c7d | 491 | w->use_time = ++window_select_count; |
d3d50620 | 492 | record_buffer (w->buffer); |
727e958e MR |
493 | } |
494 | ||
734fbd86 MR |
495 | /* Make the selected window's buffer current. */ |
496 | Fset_buffer (w->buffer); | |
497 | ||
727e958e MR |
498 | if (EQ (window, selected_window) && !inhibit_point_swap) |
499 | return window; | |
500 | ||
501 | sf = SELECTED_FRAME (); | |
502 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
503 | { | |
f00af5b1 | 504 | fset_selected_window (XFRAME (WINDOW_FRAME (w)), window); |
727e958e MR |
505 | /* Use this rather than Fhandle_switch_frame |
506 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
507 | move around in the state where a minibuffer in a separate | |
508 | frame is active. */ | |
509 | Fselect_frame (WINDOW_FRAME (w), norecord); | |
510 | /* Fselect_frame called us back so we've done all the work already. */ | |
511 | eassert (EQ (window, selected_window)); | |
512 | return window; | |
513 | } | |
514 | else | |
f00af5b1 | 515 | fset_selected_window (sf, window); |
727e958e | 516 | |
1e101a4b SM |
517 | select_window_1 (window, inhibit_point_swap); |
518 | ||
519 | bset_last_selected_window (XBUFFER (w->buffer), window); | |
520 | windows_or_buffers_changed++; | |
521 | return window; | |
522 | } | |
523 | ||
524 | /* Select window with a minimum of fuss, i.e. don't record the change anywhere | |
3f781c75 | 525 | (not even for redisplay's benefit), and assume that the window's frame is |
1e101a4b | 526 | already selected. */ |
12384b01 | 527 | static void |
1e101a4b SM |
528 | select_window_1 (Lisp_Object window, bool inhibit_point_swap) |
529 | { | |
734fbd86 MR |
530 | /* Store the old selected window's buffer's point in pointm of the old |
531 | selected window. It belongs to that window, and when the window is | |
532 | not selected, must be in the window. */ | |
727e958e MR |
533 | if (!inhibit_point_swap) |
534 | { | |
1e101a4b | 535 | struct window *ow = XWINDOW (selected_window); |
d3d50620 DA |
536 | if (! NILP (ow->buffer)) |
537 | set_marker_both (ow->pointm, ow->buffer, | |
538 | BUF_PT (XBUFFER (ow->buffer)), | |
539 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
727e958e MR |
540 | } |
541 | ||
542 | selected_window = window; | |
727e958e MR |
543 | |
544 | /* Go to the point recorded in the window. | |
545 | This is important when the buffer is in more | |
546 | than one window. It also matters when | |
547 | redisplay_window has altered point after scrolling, | |
548 | because it makes the change only in the window. */ | |
549 | { | |
1e101a4b | 550 | register ptrdiff_t new_point = marker_position (XWINDOW (window)->pointm); |
727e958e MR |
551 | if (new_point < BEGV) |
552 | SET_PT (BEGV); | |
553 | else if (new_point > ZV) | |
554 | SET_PT (ZV); | |
555 | else | |
556 | SET_PT (new_point); | |
557 | } | |
727e958e MR |
558 | } |
559 | ||
560 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, | |
94900bfe MR |
561 | doc: /* Select WINDOW which must be a live window. |
562 | Also make WINDOW's frame the selected frame and WINDOW that frame's | |
563 | selected window. In addition, make WINDOW's buffer current and set that | |
564 | buffer's value of `point' to the value of WINDOW's `window-point'. | |
565 | Return WINDOW. | |
727e958e MR |
566 | |
567 | Optional second arg NORECORD non-nil means do not put this buffer at the | |
568 | front of the buffer list and do not make this window the most recently | |
569 | selected one. | |
605be8af | 570 | |
727e958e MR |
571 | Note that the main editor command loop sets the current buffer to the |
572 | buffer of the selected window before each command. */) | |
573 | (register Lisp_Object window, Lisp_Object norecord) | |
574 | { | |
575 | return select_window (window, norecord, 0); | |
576 | } | |
577 | \f | |
bf60a96b | 578 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
49745b39 CY |
579 | doc: /* Return the buffer displayed in window WINDOW. |
580 | If WINDOW is omitted or nil, it defaults to the selected window. | |
581 | Return nil for an internal window or a deleted window. */) | |
bf60a96b MR |
582 | (Lisp_Object window) |
583 | { | |
d3d50620 | 584 | return decode_any_window (window)->buffer; |
bf60a96b MR |
585 | } |
586 | ||
587 | DEFUN ("window-parent", Fwindow_parent, Swindow_parent, 0, 1, 0, | |
49745b39 | 588 | doc: /* Return the parent window of window WINDOW. |
52162052 | 589 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 | 590 | Return nil for a window with no parent (e.g. a root window). */) |
bf60a96b MR |
591 | (Lisp_Object window) |
592 | { | |
52162052 | 593 | return decode_valid_window (window)->parent; |
bf60a96b MR |
594 | } |
595 | ||
89bc0592 | 596 | DEFUN ("window-top-child", Fwindow_top_child, Swindow_top_child, 0, 1, 0, |
49745b39 | 597 | doc: /* Return the topmost child window of window WINDOW. |
52162052 | 598 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 CY |
599 | Return nil if WINDOW is a live window (live windows have no children). |
600 | Return nil if WINDOW is an internal window whose children form a | |
601 | horizontal combination. */) | |
bf60a96b MR |
602 | (Lisp_Object window) |
603 | { | |
52162052 | 604 | return decode_valid_window (window)->vchild; |
bf60a96b MR |
605 | } |
606 | ||
89bc0592 | 607 | DEFUN ("window-left-child", Fwindow_left_child, Swindow_left_child, 0, 1, 0, |
49745b39 | 608 | doc: /* Return the leftmost child window of window WINDOW. |
52162052 | 609 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 CY |
610 | Return nil if WINDOW is a live window (live windows have no children). |
611 | Return nil if WINDOW is an internal window whose children form a | |
612 | vertical combination. */) | |
bf60a96b MR |
613 | (Lisp_Object window) |
614 | { | |
52162052 | 615 | return decode_valid_window (window)->hchild; |
bf60a96b MR |
616 | } |
617 | ||
d68443dc | 618 | DEFUN ("window-next-sibling", Fwindow_next_sibling, Swindow_next_sibling, 0, 1, 0, |
49745b39 | 619 | doc: /* Return the next sibling window of window WINDOW. |
52162052 | 620 | WINDOW must be a valid window and defaults to the selected one. |
d68443dc | 621 | Return nil if WINDOW has no next sibling. */) |
bf60a96b MR |
622 | (Lisp_Object window) |
623 | { | |
52162052 | 624 | return decode_valid_window (window)->next; |
bf60a96b MR |
625 | } |
626 | ||
d68443dc | 627 | DEFUN ("window-prev-sibling", Fwindow_prev_sibling, Swindow_prev_sibling, 0, 1, 0, |
49745b39 | 628 | doc: /* Return the previous sibling window of window WINDOW. |
52162052 | 629 | WINDOW must be a valid window and defaults to the selected one. |
d68443dc | 630 | Return nil if WINDOW has no previous sibling. */) |
bf60a96b MR |
631 | (Lisp_Object window) |
632 | { | |
52162052 | 633 | return decode_valid_window (window)->prev; |
bf60a96b | 634 | } |
67492200 | 635 | |
72f94d4b | 636 | DEFUN ("window-combination-limit", Fwindow_combination_limit, Swindow_combination_limit, 1, 1, 0, |
b6f67890 | 637 | doc: /* Return combination limit of window WINDOW. |
095d384d | 638 | WINDOW must be a valid window used in horizontal or vertical combination. |
be7f5545 | 639 | If the return value is nil, child windows of WINDOW can be recombined with |
b6f67890 | 640 | WINDOW's siblings. A return value of t means that child windows of |
095d384d | 641 | WINDOW are never \(re-)combined with WINDOW's siblings. */) |
496e208e | 642 | (Lisp_Object window) |
7ab12479 | 643 | { |
095d384d DA |
644 | struct window *w; |
645 | ||
72f94d4b | 646 | CHECK_VALID_WINDOW (window); |
095d384d DA |
647 | w = XWINDOW (window); |
648 | if (!NILP (w->buffer)) | |
649 | error ("Combination limit is meaningful for internal windows only"); | |
72f94d4b | 650 | return XWINDOW (window)->combination_limit; |
7ab12479 | 651 | } |
53bb6b99 | 652 | |
b6f67890 | 653 | DEFUN ("set-window-combination-limit", Fset_window_combination_limit, Sset_window_combination_limit, 2, 2, 0, |
d2999b1a | 654 | doc: /* Set combination limit of window WINDOW to LIMIT; return LIMIT. |
095d384d | 655 | WINDOW must be a valid window used in horizontal or vertical combination. |
8e17c9ba MR |
656 | If LIMIT is nil, child windows of WINDOW can be recombined with WINDOW's |
657 | siblings. LIMIT t means that child windows of WINDOW are never | |
658 | \(re-)combined with WINDOW's siblings. Other values are reserved for | |
095d384d | 659 | future use. */) |
d2999b1a | 660 | (Lisp_Object window, Lisp_Object limit) |
b3a10345 | 661 | { |
095d384d DA |
662 | struct window *w; |
663 | ||
664 | CHECK_VALID_WINDOW (window); | |
665 | w = XWINDOW (window); | |
666 | if (!NILP (w->buffer)) | |
667 | error ("Combination limit is meaningful for internal windows only"); | |
668 | wset_combination_limit (w, limit); | |
e8c17b81 | 669 | return limit; |
496e208e | 670 | } |
7bbc67d2 | 671 | |
496e208e | 672 | DEFUN ("window-use-time", Fwindow_use_time, Swindow_use_time, 0, 1, 0, |
49745b39 | 673 | doc: /* Return the use time of window WINDOW. |
52162052 | 674 | WINDOW must be a live window and defaults to the selected one. |
49745b39 CY |
675 | The window with the highest use time is the most recently selected |
676 | one. The window with the lowest use time is the least recently | |
677 | selected one. */) | |
496e208e MR |
678 | (Lisp_Object window) |
679 | { | |
52162052 | 680 | return make_number (decode_live_window (window)->use_time); |
496e208e | 681 | } |
abde8f8c | 682 | \f |
105216ed CY |
683 | DEFUN ("window-total-height", Fwindow_total_height, Swindow_total_height, 0, 1, 0, |
684 | doc: /* Return the total height, in lines, of window WINDOW. | |
52162052 | 685 | WINDOW must be a valid window and defaults to the selected one. |
b3a10345 | 686 | |
105216ed CY |
687 | The return value includes the mode line and header line, if any. |
688 | If WINDOW is an internal window, the total height is the height | |
689 | of the screen areas spanned by its children. | |
536833ab | 690 | |
105216ed CY |
691 | On a graphical display, this total height is reported as an |
692 | integer multiple of the default character height. */) | |
693 | (Lisp_Object window) | |
496e208e | 694 | { |
5f24fa51 | 695 | return make_number (decode_valid_window (window)->total_lines); |
105216ed | 696 | } |
536833ab | 697 | |
105216ed CY |
698 | DEFUN ("window-total-width", Fwindow_total_width, Swindow_total_width, 0, 1, 0, |
699 | doc: /* Return the total width, in columns, of window WINDOW. | |
52162052 | 700 | WINDOW must be a valid window and defaults to the selected one. |
b3a10345 | 701 | |
105216ed CY |
702 | The return value includes any vertical dividers or scroll bars |
703 | belonging to WINDOW. If WINDOW is an internal window, the total width | |
704 | is the width of the screen areas spanned by its children. | |
b3a10345 | 705 | |
105216ed CY |
706 | On a graphical display, this total width is reported as an |
707 | integer multiple of the default character width. */) | |
496e208e MR |
708 | (Lisp_Object window) |
709 | { | |
5f24fa51 | 710 | return make_number (decode_valid_window (window)->total_cols); |
abde8f8c | 711 | } |
b3a10345 | 712 | |
496e208e | 713 | DEFUN ("window-new-total", Fwindow_new_total, Swindow_new_total, 0, 1, 0, |
49745b39 | 714 | doc: /* Return the new total size of window WINDOW. |
52162052 | 715 | WINDOW must be a valid window and defaults to the selected one. */) |
496e208e MR |
716 | (Lisp_Object window) |
717 | { | |
52162052 | 718 | return decode_valid_window (window)->new_total; |
496e208e MR |
719 | } |
720 | ||
721 | DEFUN ("window-normal-size", Fwindow_normal_size, Swindow_normal_size, 0, 2, 0, | |
49745b39 | 722 | doc: /* Return the normal height of window WINDOW. |
52162052 | 723 | WINDOW must be a valid window and defaults to the selected one. |
49745b39 | 724 | If HORIZONTAL is non-nil, return the normal width of WINDOW. */) |
496e208e MR |
725 | (Lisp_Object window, Lisp_Object horizontal) |
726 | { | |
52162052 | 727 | struct window *w = decode_valid_window (window); |
d3d50620 DA |
728 | |
729 | return NILP (horizontal) ? w->normal_lines : w->normal_cols; | |
496e208e MR |
730 | } |
731 | ||
732 | DEFUN ("window-new-normal", Fwindow_new_normal, Swindow_new_normal, 0, 1, 0, | |
49745b39 | 733 | doc: /* Return new normal size of window WINDOW. |
52162052 | 734 | WINDOW must be a valid window and defaults to the selected one. */) |
496e208e MR |
735 | (Lisp_Object window) |
736 | { | |
52162052 | 737 | return decode_valid_window (window)->new_normal; |
496e208e MR |
738 | } |
739 | ||
abde8f8c | 740 | DEFUN ("window-left-column", Fwindow_left_column, Swindow_left_column, 0, 1, 0, |
49745b39 | 741 | doc: /* Return left column of window WINDOW. |
105216ed CY |
742 | This is the distance, in columns, between the left edge of WINDOW and |
743 | the left edge of the frame's window area. For instance, the return | |
744 | value is 0 if there is no window to the left of WINDOW. | |
745 | ||
52162052 | 746 | WINDOW must be a valid window and defaults to the selected one. */) |
abde8f8c MR |
747 | (Lisp_Object window) |
748 | { | |
5f24fa51 | 749 | return make_number (decode_valid_window (window)->left_col); |
abde8f8c MR |
750 | } |
751 | ||
752 | DEFUN ("window-top-line", Fwindow_top_line, Swindow_top_line, 0, 1, 0, | |
49745b39 | 753 | doc: /* Return top line of window WINDOW. |
105216ed CY |
754 | This is the distance, in lines, between the top of WINDOW and the top |
755 | of the frame's window area. For instance, the return value is 0 if | |
756 | there is no window above WINDOW. | |
757 | ||
52162052 | 758 | WINDOW must be a valid window and defaults to the selected one. */) |
abde8f8c MR |
759 | (Lisp_Object window) |
760 | { | |
5f24fa51 | 761 | return make_number (decode_valid_window (window)->top_line); |
abde8f8c MR |
762 | } |
763 | ||
764 | /* Return the number of lines of W's body. Don't count any mode or | |
765 | header line of W. */ | |
766 | ||
46a4ce9e | 767 | static int |
abde8f8c MR |
768 | window_body_lines (struct window *w) |
769 | { | |
5f24fa51 | 770 | int height = w->total_lines; |
abde8f8c MR |
771 | |
772 | if (!MINI_WINDOW_P (w)) | |
773 | { | |
774 | if (WINDOW_WANTS_MODELINE_P (w)) | |
775 | --height; | |
776 | if (WINDOW_WANTS_HEADER_LINE_P (w)) | |
777 | --height; | |
778 | } | |
779 | ||
780 | return height; | |
781 | } | |
782 | ||
783 | /* Return the number of columns of W's body. Don't count columns | |
784 | occupied by the scroll bar or the vertical bar separating W from its | |
785 | right sibling. On window-systems don't count fringes or display | |
786 | margins either. */ | |
787 | ||
788 | int | |
789 | window_body_cols (struct window *w) | |
790 | { | |
791 | struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
5f24fa51 | 792 | int width = w->total_cols; |
abde8f8c MR |
793 | |
794 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) | |
795 | /* Scroll bars occupy a few columns. */ | |
796 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); | |
797 | else if (!FRAME_WINDOW_P (f) | |
798 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
799 | /* The column of `|' characters separating side-by-side windows | |
800 | occupies one column only. */ | |
801 | width -= 1; | |
802 | ||
f1665bdc EZ |
803 | /* Display margins cannot be used for normal text. */ |
804 | width -= WINDOW_LEFT_MARGIN_COLS (w) + WINDOW_RIGHT_MARGIN_COLS (w); | |
805 | ||
abde8f8c | 806 | if (FRAME_WINDOW_P (f)) |
f1665bdc EZ |
807 | /* On window-systems, fringes cannot be used for normal text. */ |
808 | width -= WINDOW_FRINGE_COLS (w); | |
abde8f8c MR |
809 | |
810 | return width; | |
811 | } | |
812 | ||
105216ed CY |
813 | DEFUN ("window-body-height", Fwindow_body_height, Swindow_body_height, 0, 1, 0, |
814 | doc: /* Return the height, in lines, of WINDOW's text area. | |
52162052 | 815 | WINDOW must be a live window and defaults to the selected one. |
89bd5ee1 | 816 | |
105216ed CY |
817 | The returned height does not include the mode line or header line. |
818 | On a graphical display, the height is expressed as an integer multiple | |
819 | of the default character height. If a line at the bottom of the text | |
820 | area is only partially visible, that counts as a whole line; to | |
821 | exclude partially-visible lines, use `window-text-height'. */) | |
822 | (Lisp_Object window) | |
abde8f8c | 823 | { |
b6a9e8b1 | 824 | return make_number (window_body_lines (decode_live_window (window))); |
105216ed | 825 | } |
abde8f8c | 826 | |
105216ed CY |
827 | DEFUN ("window-body-width", Fwindow_body_width, Swindow_body_width, 0, 1, 0, |
828 | doc: /* Return the width, in columns, of WINDOW's text area. | |
52162052 | 829 | WINDOW must be a live window and defaults to the selected one. |
105216ed CY |
830 | |
831 | The return value does not include any vertical dividers, fringe or | |
832 | marginal areas, or scroll bars. On a graphical display, the width is | |
833 | expressed as an integer multiple of the default character width. */) | |
834 | (Lisp_Object window) | |
835 | { | |
b6a9e8b1 | 836 | return make_number (window_body_cols (decode_live_window (window))); |
abde8f8c | 837 | } |
536833ab | 838 | |
7ab12479 | 839 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 | 840 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
496e208e | 841 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 842 | (Lisp_Object window) |
7ab12479 | 843 | { |
52162052 | 844 | return make_number (decode_live_window (window)->hscroll); |
7ab12479 JB |
845 | } |
846 | ||
24a212eb PE |
847 | /* Set W's horizontal scroll amount to HSCROLL clipped to a reasonable |
848 | range, returning the new amount as a fixnum. */ | |
849 | static Lisp_Object | |
850 | set_window_hscroll (struct window *w, EMACS_INT hscroll) | |
851 | { | |
4e71fd89 PE |
852 | /* Horizontal scrolling has problems with large scroll amounts. |
853 | It's too slow with long lines, and even with small lines the | |
854 | display can be messed up. For now, though, impose only the limits | |
855 | required by the internal representation: horizontal scrolling must | |
856 | fit in fixnum (since it's visible to Elisp) and into ptrdiff_t | |
857 | (since it's stored in a ptrdiff_t). */ | |
858 | ptrdiff_t hscroll_max = min (MOST_POSITIVE_FIXNUM, PTRDIFF_MAX); | |
859 | ptrdiff_t new_hscroll = clip_to_bounds (0, hscroll, hscroll_max); | |
24a212eb PE |
860 | |
861 | /* Prevent redisplay shortcuts when changing the hscroll. */ | |
862 | if (w->hscroll != new_hscroll) | |
d3d50620 | 863 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
24a212eb PE |
864 | |
865 | w->hscroll = new_hscroll; | |
866 | return make_number (new_hscroll); | |
867 | } | |
868 | ||
7ab12479 | 869 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, |
fdb82f93 | 870 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
52162052 | 871 | WINDOW must be a live window and defaults to the selected one. |
24a212eb PE |
872 | Clip the number to a reasonable value if out of range. |
873 | Return the new number. NCOL should be zero or positive. | |
ebadb1e4 EZ |
874 | |
875 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 876 | window so that the location of point moves off-window. */) |
5842a27b | 877 | (Lisp_Object window, Lisp_Object ncol) |
7ab12479 | 878 | { |
b7826503 | 879 | CHECK_NUMBER (ncol); |
89bc0592 | 880 | return set_window_hscroll (decode_live_window (window), XINT (ncol)); |
7ab12479 JB |
881 | } |
882 | ||
190eb263 RS |
883 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
884 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 885 | doc: /* Return WINDOW's redisplay end trigger value. |
52162052 | 886 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 887 | See `set-window-redisplay-end-trigger' for more information. */) |
5842a27b | 888 | (Lisp_Object window) |
190eb263 | 889 | { |
52162052 | 890 | return decode_live_window (window)->redisplay_end_trigger; |
190eb263 RS |
891 | } |
892 | ||
893 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
894 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 | 895 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
52162052 MR |
896 | WINDOW must be a live window and defaults to the selected one. VALUE |
897 | should be a buffer position (typically a marker) or nil. If it is a | |
898 | buffer position, then if redisplay in WINDOW reaches a position beyond | |
899 | VALUE, the functions in `redisplay-end-trigger-functions' are called | |
900 | with two arguments: WINDOW, and the end trigger value. Afterwards the | |
901 | end-trigger value is reset to nil. */) | |
5842a27b | 902 | (register Lisp_Object window, Lisp_Object value) |
190eb263 | 903 | { |
e8c17b81 PE |
904 | wset_redisplay_end_trigger (decode_live_window (window), value); |
905 | return value; | |
190eb263 RS |
906 | } |
907 | ||
7ab12479 | 908 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 | 909 | doc: /* Return a list of the edge coordinates of WINDOW. |
52162052 MR |
910 | WINDOW must be a valid window and defaults to the selected one. |
911 | ||
912 | The returned list has the form (LEFT TOP RIGHT BOTTOM). TOP and BOTTOM | |
913 | count by lines, and LEFT and RIGHT count by columns, all relative to 0, | |
914 | 0 at top left corner of frame. | |
915 | ||
916 | RIGHT is one more than the rightmost column occupied by WINDOW. BOTTOM | |
917 | is one more than the bottommost row occupied by WINDOW. The edges | |
918 | include the space used by WINDOW's scroll bar, display margins, fringes, | |
919 | header line, and/or mode line. For the edges of just the text area, use | |
920 | `window-inside-edges'. */) | |
5842a27b | 921 | (Lisp_Object window) |
7ab12479 | 922 | { |
52162052 | 923 | register struct window *w = decode_valid_window (window); |
7ab12479 | 924 | |
1479c557 PE |
925 | return list4i (WINDOW_LEFT_EDGE_COL (w), WINDOW_TOP_EDGE_LINE (w), |
926 | WINDOW_RIGHT_EDGE_COL (w), WINDOW_BOTTOM_EDGE_LINE (w)); | |
7ab12479 JB |
927 | } |
928 | ||
c99a9eb3 RS |
929 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
930 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
52162052 MR |
931 | WINDOW must be a valid window and defaults to the selected one. |
932 | ||
933 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
934 | 0, 0 at the top left corner of the frame. | |
b35ac83e CY |
935 | |
936 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
937 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
938 | The pixel edges include the space used by WINDOW's scroll bar, display | |
939 | margins, fringes, header line, and/or mode line. For the pixel edges | |
940 | of just the text area, use `window-inside-pixel-edges'. */) | |
5842a27b | 941 | (Lisp_Object window) |
c99a9eb3 | 942 | { |
52162052 | 943 | register struct window *w = decode_valid_window (window); |
c99a9eb3 | 944 | |
1479c557 PE |
945 | return list4i (WINDOW_LEFT_EDGE_X (w), WINDOW_TOP_EDGE_Y (w), |
946 | WINDOW_RIGHT_EDGE_X (w), WINDOW_BOTTOM_EDGE_Y (w)); | |
c99a9eb3 RS |
947 | } |
948 | ||
9d5405ec | 949 | static void |
5e617bc2 | 950 | calc_absolute_offset (struct window *w, int *add_x, int *add_y) |
9d5405ec | 951 | { |
d3d50620 | 952 | struct frame *f = XFRAME (w->frame); |
9d5405ec J |
953 | *add_y = f->top_pos; |
954 | #ifdef FRAME_MENUBAR_HEIGHT | |
955 | *add_y += FRAME_MENUBAR_HEIGHT (f); | |
956 | #endif | |
bfeabdc3 JD |
957 | #ifdef FRAME_TOOLBAR_TOP_HEIGHT |
958 | *add_y += FRAME_TOOLBAR_TOP_HEIGHT (f); | |
959 | #elif FRAME_TOOLBAR_HEIGHT | |
9d5405ec J |
960 | *add_y += FRAME_TOOLBAR_HEIGHT (f); |
961 | #endif | |
962 | #ifdef FRAME_NS_TITLEBAR_HEIGHT | |
963 | *add_y += FRAME_NS_TITLEBAR_HEIGHT (f); | |
964 | #endif | |
965 | *add_x = f->left_pos; | |
bfeabdc3 JD |
966 | #ifdef FRAME_TOOLBAR_LEFT_WIDTH |
967 | *add_x += FRAME_TOOLBAR_LEFT_WIDTH (f); | |
968 | #endif | |
9d5405ec J |
969 | } |
970 | ||
971 | DEFUN ("window-absolute-pixel-edges", Fwindow_absolute_pixel_edges, | |
972 | Swindow_absolute_pixel_edges, 0, 1, 0, | |
973 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
52162052 MR |
974 | WINDOW must be a valid window and defaults to the selected one. |
975 | ||
976 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
977 | 0, 0 at the top left corner of the display. | |
9d5405ec J |
978 | |
979 | RIGHT is one more than the rightmost x position occupied by WINDOW. | |
980 | BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
981 | The pixel edges include the space used by WINDOW's scroll bar, display | |
982 | margins, fringes, header line, and/or mode line. For the pixel edges | |
c49d071a | 983 | of just the text area, use `window-inside-absolute-pixel-edges'. */) |
5842a27b | 984 | (Lisp_Object window) |
9d5405ec | 985 | { |
52162052 | 986 | register struct window *w = decode_valid_window (window); |
9d5405ec | 987 | int add_x, add_y; |
89bc0592 | 988 | |
ed3751c8 | 989 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec | 990 | |
1479c557 PE |
991 | return list4i (WINDOW_LEFT_EDGE_X (w) + add_x, |
992 | WINDOW_TOP_EDGE_Y (w) + add_y, | |
993 | WINDOW_RIGHT_EDGE_X (w) + add_x, | |
994 | WINDOW_BOTTOM_EDGE_Y (w) + add_y); | |
9d5405ec J |
995 | } |
996 | ||
c99a9eb3 RS |
997 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, |
998 | doc: /* Return a list of the edge coordinates of WINDOW. | |
52162052 MR |
999 | WINDOW must be a live window and defaults to the selected one. |
1000 | ||
1001 | The returned list has the form (LEFT TOP RIGHT BOTTOM). TOP and BOTTOM | |
1002 | count by lines, and LEFT and RIGHT count by columns, all relative to 0, | |
1003 | 0 at top left corner of frame. | |
b35ac83e CY |
1004 | |
1005 | RIGHT is one more than the rightmost column of WINDOW's text area. | |
52162052 MR |
1006 | BOTTOM is one more than the bottommost row of WINDOW's text area. The |
1007 | inside edges do not include the space used by the WINDOW's scroll bar, | |
1008 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 1009 | (Lisp_Object window) |
c99a9eb3 | 1010 | { |
52162052 | 1011 | register struct window *w = decode_live_window (window); |
c99a9eb3 | 1012 | |
1479c557 PE |
1013 | return list4i ((WINDOW_BOX_LEFT_EDGE_COL (w) |
1014 | + WINDOW_LEFT_MARGIN_COLS (w) | |
1015 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
1016 | (WINDOW_TOP_EDGE_LINE (w) | |
1017 | + WINDOW_HEADER_LINE_LINES (w)), | |
1018 | (WINDOW_BOX_RIGHT_EDGE_COL (w) | |
1019 | - WINDOW_RIGHT_MARGIN_COLS (w) | |
1020 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
1021 | (WINDOW_BOTTOM_EDGE_LINE (w) | |
1022 | - WINDOW_MODE_LINE_LINES (w))); | |
c99a9eb3 RS |
1023 | } |
1024 | ||
1025 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
2fbdc249 | 1026 | doc: /* Return a list of the edge pixel coordinates of WINDOW's text area. |
52162052 MR |
1027 | WINDOW must be a live window and defaults to the selected one. |
1028 | ||
1029 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
1030 | (0,0) at the top left corner of the frame's window area. | |
b35ac83e CY |
1031 | |
1032 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
1033 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
1034 | The inside edges do not include the space used by WINDOW's scroll bar, | |
c99a9eb3 | 1035 | display margins, fringes, header line, and/or mode line. */) |
5842a27b | 1036 | (Lisp_Object window) |
c99a9eb3 | 1037 | { |
52162052 | 1038 | register struct window *w = decode_live_window (window); |
c99a9eb3 | 1039 | |
1479c557 PE |
1040 | return list4i ((WINDOW_BOX_LEFT_EDGE_X (w) |
1041 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
1042 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
1043 | (WINDOW_TOP_EDGE_Y (w) | |
1044 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
1045 | (WINDOW_BOX_RIGHT_EDGE_X (w) | |
1046 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
1047 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
1048 | (WINDOW_BOTTOM_EDGE_Y (w) | |
1049 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
c99a9eb3 RS |
1050 | } |
1051 | ||
9d5405ec J |
1052 | DEFUN ("window-inside-absolute-pixel-edges", |
1053 | Fwindow_inside_absolute_pixel_edges, | |
1054 | Swindow_inside_absolute_pixel_edges, 0, 1, 0, | |
2fbdc249 | 1055 | doc: /* Return a list of the edge pixel coordinates of WINDOW's text area. |
52162052 MR |
1056 | WINDOW must be a live window and defaults to the selected one. |
1057 | ||
1058 | The returned list has the form (LEFT TOP RIGHT BOTTOM), all relative to | |
1059 | (0,0) at the top left corner of the frame's window area. | |
9d5405ec J |
1060 | |
1061 | RIGHT is one more than the rightmost x position of WINDOW's text area. | |
1062 | BOTTOM is one more than the bottommost y position of WINDOW's text area. | |
1063 | The inside edges do not include the space used by WINDOW's scroll bar, | |
1064 | display margins, fringes, header line, and/or mode line. */) | |
5842a27b | 1065 | (Lisp_Object window) |
9d5405ec | 1066 | { |
52162052 | 1067 | register struct window *w = decode_live_window (window); |
9d5405ec | 1068 | int add_x, add_y; |
89bc0592 | 1069 | |
ed3751c8 | 1070 | calc_absolute_offset (w, &add_x, &add_y); |
9d5405ec | 1071 | |
1479c557 PE |
1072 | return list4i ((WINDOW_BOX_LEFT_EDGE_X (w) |
1073 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
1074 | + WINDOW_LEFT_FRINGE_WIDTH (w) + add_x), | |
1075 | (WINDOW_TOP_EDGE_Y (w) | |
1076 | + WINDOW_HEADER_LINE_HEIGHT (w) + add_y), | |
1077 | (WINDOW_BOX_RIGHT_EDGE_X (w) | |
1078 | - WINDOW_RIGHT_MARGIN_WIDTH (w) | |
1079 | - WINDOW_RIGHT_FRINGE_WIDTH (w) + add_x), | |
1080 | (WINDOW_BOTTOM_EDGE_Y (w) | |
1081 | - WINDOW_MODE_LINE_HEIGHT (w) + add_y)); | |
9d5405ec J |
1082 | } |
1083 | ||
9173a8fb | 1084 | /* Test if the character at column X, row Y is within window W. |
341f3858 | 1085 | If it is not, return ON_NOTHING; |
9173a8fb | 1086 | if it is in the window's text area, return ON_TEXT; |
341f3858 | 1087 | if it is on the window's modeline, return ON_MODE_LINE; |
d5783c40 | 1088 | if it is on the border between the window and its right sibling, |
341f3858 | 1089 | return ON_VERTICAL_BORDER. |
9173a8fb | 1090 | if it is on a scroll bar, return ON_SCROLL_BAR. |
341f3858 | 1091 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 1092 | if it is in left or right fringe of the window, |
9173a8fb | 1093 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE; |
49b996e7 | 1094 | if it is in the marginal area to the left/right of the window, |
9173a8fb | 1095 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN. |
5500c422 GM |
1096 | |
1097 | X and Y are frame relative pixel coordinates. */ | |
1098 | ||
7442878f | 1099 | static enum window_part |
9173a8fb | 1100 | coordinates_in_window (register struct window *w, int x, int y) |
d5783c40 | 1101 | { |
b0228ace | 1102 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
7442878f | 1103 | enum window_part part; |
949cf20f | 1104 | int ux = FRAME_COLUMN_WIDTH (f); |
c7b08b0d MR |
1105 | int left_x = WINDOW_LEFT_EDGE_X (w); |
1106 | int right_x = WINDOW_RIGHT_EDGE_X (w); | |
1107 | int top_y = WINDOW_TOP_EDGE_Y (w); | |
1108 | int bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
dad75588 GM |
1109 | /* The width of the area where the vertical line can be dragged. |
1110 | (Between mode lines for instance. */ | |
1111 | int grabbable_width = ux; | |
949cf20f | 1112 | int lmargin_width, rmargin_width, text_left, text_right; |
9173a8fb | 1113 | |
c7b08b0d MR |
1114 | /* Outside any interesting row or column? */ |
1115 | if (y < top_y || y >= bottom_y || x < left_x || x >= right_x) | |
9173a8fb | 1116 | return ON_NOTHING; |
b0228ace | 1117 | |
c7b08b0d MR |
1118 | /* On the mode line or header line? */ |
1119 | if ((WINDOW_WANTS_MODELINE_P (w) | |
1120 | && y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w) | |
1121 | && (part = ON_MODE_LINE)) | |
1122 | || (WINDOW_WANTS_HEADER_LINE_P (w) | |
1123 | && y < top_y + CURRENT_HEADER_LINE_HEIGHT (w) | |
1124 | && (part = ON_HEADER_LINE))) | |
1125 | { | |
1126 | /* If it's under/over the scroll bar portion of the mode/header | |
1127 | line, say it's on the vertical line. That's to be able to | |
1128 | resize windows horizontally in case we're using toolkit scroll | |
1129 | bars. Note: If scrollbars are on the left, the window that | |
1130 | must be eventually resized is that on the left of WINDOW. */ | |
1131 | if ((WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) | |
1132 | && !WINDOW_LEFTMOST_P (w) | |
1133 | && eabs (x - left_x) < grabbable_width) | |
1134 | || (!WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) | |
1135 | && !WINDOW_RIGHTMOST_P (w) | |
1136 | && eabs (x - right_x) < grabbable_width)) | |
1137 | return ON_VERTICAL_BORDER; | |
1138 | else | |
1139 | return part; | |
1140 | } | |
1141 | ||
466539bc EZ |
1142 | /* In what's below, we subtract 1 when computing right_x because we |
1143 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
1144 | if (w->pseudo_window_p) |
1145 | { | |
1146 | left_x = 0; | |
949cf20f | 1147 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
5500c422 GM |
1148 | } |
1149 | else | |
1150 | { | |
949cf20f KS |
1151 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
1152 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
5500c422 | 1153 | } |
37962e60 | 1154 | |
949cf20f | 1155 | /* Outside any interesting column? */ |
9173a8fb CY |
1156 | if (x < left_x || x > right_x) |
1157 | return ON_SCROLL_BAR; | |
949cf20f KS |
1158 | |
1159 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
1160 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 1161 | |
949cf20f KS |
1162 | text_left = window_box_left (w, TEXT_AREA); |
1163 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
1164 | ||
1165 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 1166 | { |
447e9da0 | 1167 | if (!w->pseudo_window_p |
949cf20f | 1168 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 1169 | && !WINDOW_RIGHTMOST_P (w) |
9173a8fb CY |
1170 | && (eabs (x - right_x) < grabbable_width)) |
1171 | return ON_VERTICAL_BORDER; | |
fbad6f9a | 1172 | } |
9173a8fb CY |
1173 | /* Need to say "x > right_x" rather than >=, since on character |
1174 | terminals, the vertical line's x coordinate is right_x. */ | |
1175 | else if (!w->pseudo_window_p | |
1176 | && !WINDOW_RIGHTMOST_P (w) | |
1177 | && x > right_x - ux) | |
1178 | return ON_VERTICAL_BORDER; | |
1179 | ||
1180 | if (x < text_left) | |
949cf20f KS |
1181 | { |
1182 | if (lmargin_width > 0 | |
1183 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1184 | ? (x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) |
1185 | : (x < left_x + lmargin_width))) | |
1186 | return ON_LEFT_MARGIN; | |
1187 | ||
949cf20f KS |
1188 | return ON_LEFT_FRINGE; |
1189 | } | |
1190 | ||
9173a8fb | 1191 | if (x >= text_right) |
949cf20f KS |
1192 | { |
1193 | if (rmargin_width > 0 | |
1194 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
9173a8fb CY |
1195 | ? (x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) |
1196 | : (x >= right_x - rmargin_width))) | |
1197 | return ON_RIGHT_MARGIN; | |
1198 | ||
949cf20f KS |
1199 | return ON_RIGHT_FRINGE; |
1200 | } | |
1201 | ||
1202 | /* Everything special ruled out - must be on text area */ | |
949cf20f | 1203 | return ON_TEXT; |
d5783c40 JB |
1204 | } |
1205 | ||
9173a8fb CY |
1206 | /* Take X is the frame-relative pixel x-coordinate, and return the |
1207 | x-coordinate relative to part PART of window W. */ | |
1208 | int | |
1209 | window_relative_x_coord (struct window *w, enum window_part part, int x) | |
1210 | { | |
1211 | int left_x = (w->pseudo_window_p) ? 0 : WINDOW_BOX_LEFT_EDGE_X (w); | |
1212 | ||
1213 | switch (part) | |
1214 | { | |
1215 | case ON_TEXT: | |
1216 | return x - window_box_left (w, TEXT_AREA); | |
1217 | ||
1218 | case ON_LEFT_FRINGE: | |
1219 | return x - left_x; | |
1220 | ||
1221 | case ON_RIGHT_FRINGE: | |
1222 | return x - left_x - WINDOW_LEFT_FRINGE_WIDTH (w); | |
1223 | ||
1224 | case ON_LEFT_MARGIN: | |
1225 | return (x - left_x | |
1226 | - ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1227 | ? WINDOW_LEFT_FRINGE_WIDTH (w) : 0)); | |
1228 | ||
1229 | case ON_RIGHT_MARGIN: | |
1230 | return (x + 1 | |
1231 | - ((w->pseudo_window_p) | |
1232 | ? WINDOW_TOTAL_WIDTH (w) | |
1233 | : WINDOW_BOX_RIGHT_EDGE_X (w)) | |
1234 | + window_box_width (w, RIGHT_MARGIN_AREA) | |
1235 | + ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
1236 | ? WINDOW_RIGHT_FRINGE_WIDTH (w) : 0)); | |
1237 | } | |
1238 | ||
1239 | /* ON_SCROLL_BAR, ON_NOTHING, and ON_VERTICAL_BORDER: */ | |
1240 | return 0; | |
1241 | } | |
1242 | ||
b0228ace | 1243 | |
d5783c40 | 1244 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
1245 | Scoordinates_in_window_p, 2, 2, 0, |
1246 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
52162052 | 1247 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1248 | COORDINATES is a cons of the form (X . Y), X and Y being distances |
1249 | measured in characters from the upper-left corner of the frame. | |
23fe745a | 1250 | \(0 . 0) denotes the character in the upper left corner of the |
fdb82f93 PJ |
1251 | frame. |
1252 | If COORDINATES are in the text portion of WINDOW, | |
1253 | the coordinates relative to the window are returned. | |
1254 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
1255 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
1256 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
1257 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 1258 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
1259 | `vertical-line' is returned. |
1260 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
1261 | or `right-margin' is returned. */) | |
5842a27b | 1262 | (register Lisp_Object coordinates, Lisp_Object window) |
d5783c40 | 1263 | { |
5500c422 GM |
1264 | struct window *w; |
1265 | struct frame *f; | |
d5783c40 | 1266 | int x, y; |
5500c422 | 1267 | Lisp_Object lx, ly; |
d5783c40 | 1268 | |
52162052 | 1269 | w = decode_live_window (window); |
d3d50620 | 1270 | f = XFRAME (w->frame); |
b7826503 | 1271 | CHECK_CONS (coordinates); |
5500c422 GM |
1272 | lx = Fcar (coordinates); |
1273 | ly = Fcdr (coordinates); | |
b7826503 PJ |
1274 | CHECK_NUMBER_OR_FLOAT (lx); |
1275 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
1276 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
1277 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 | 1278 | |
9173a8fb | 1279 | switch (coordinates_in_window (w, x, y)) |
d5783c40 | 1280 | { |
7442878f | 1281 | case ON_NOTHING: |
d5783c40 JB |
1282 | return Qnil; |
1283 | ||
7442878f | 1284 | case ON_TEXT: |
9173a8fb CY |
1285 | /* Convert X and Y to window relative pixel coordinates, and |
1286 | return the canonical char units. */ | |
1287 | x -= window_box_left (w, TEXT_AREA); | |
1288 | y -= WINDOW_TOP_EDGE_Y (w); | |
949cf20f KS |
1289 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
1290 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 1291 | |
7442878f | 1292 | case ON_MODE_LINE: |
d5783c40 | 1293 | return Qmode_line; |
37962e60 | 1294 | |
7442878f | 1295 | case ON_VERTICAL_BORDER: |
e5d77022 | 1296 | return Qvertical_line; |
d5783c40 | 1297 | |
7442878f | 1298 | case ON_HEADER_LINE: |
045dee35 | 1299 | return Qheader_line; |
5500c422 | 1300 | |
7442878f GM |
1301 | case ON_LEFT_FRINGE: |
1302 | return Qleft_fringe; | |
177c0ea7 | 1303 | |
7442878f GM |
1304 | case ON_RIGHT_FRINGE: |
1305 | return Qright_fringe; | |
fbad6f9a | 1306 | |
49b996e7 GM |
1307 | case ON_LEFT_MARGIN: |
1308 | return Qleft_margin; | |
177c0ea7 | 1309 | |
49b996e7 GM |
1310 | case ON_RIGHT_MARGIN: |
1311 | return Qright_margin; | |
1312 | ||
6487f669 RS |
1313 | case ON_SCROLL_BAR: |
1314 | /* Historically we are supposed to return nil in this case. */ | |
1315 | return Qnil; | |
1316 | ||
d5783c40 | 1317 | default: |
1088b922 | 1318 | emacs_abort (); |
d5783c40 JB |
1319 | } |
1320 | } | |
1321 | ||
67492200 GM |
1322 | |
1323 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
1324 | Check if window W contains coordinates specified by USER_DATA which |
1325 | is actually a pointer to a struct check_window_data CW. | |
1326 | ||
1327 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
1328 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 1329 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
1330 | zero from this function to stop iterating over windows. */ |
1331 | ||
1332 | struct check_window_data | |
1333 | { | |
1334 | Lisp_Object *window; | |
9173a8fb | 1335 | int x, y; |
341f3858 | 1336 | enum window_part *part; |
f95464e4 | 1337 | }; |
67492200 GM |
1338 | |
1339 | static int | |
971de7fb | 1340 | check_window_containing (struct window *w, void *user_data) |
67492200 | 1341 | { |
f95464e4 | 1342 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
1343 | enum window_part found; |
1344 | int continue_p = 1; | |
67492200 | 1345 | |
f95464e4 | 1346 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1347 | if (found != ON_NOTHING) |
67492200 | 1348 | { |
341f3858 | 1349 | *cw->part = found; |
f95464e4 | 1350 | XSETWINDOW (*cw->window, w); |
7442878f | 1351 | continue_p = 0; |
67492200 | 1352 | } |
177c0ea7 | 1353 | |
7442878f | 1354 | return continue_p; |
67492200 GM |
1355 | } |
1356 | ||
1357 | ||
5500c422 | 1358 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1359 | return it as a Lisp_Object. |
1360 | ||
1361 | If X, Y is on one of the window's special `window_part' elements, | |
9173a8fb | 1362 | set *PART to the id of that element. |
949cf20f | 1363 | |
341f3858 | 1364 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1365 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1366 | ||
1367 | This function was previously implemented with a loop cycling over | |
1368 | windows with Fnext_window, and starting with the frame's selected | |
1369 | window. It turned out that this doesn't work with an | |
1370 | implementation of next_window using Vwindow_list, because | |
1371 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1372 | tree of F when this function is called asynchronously from | |
1373 | note_mouse_highlight. The original loop didn't terminate in this | |
1374 | case. */ | |
5500c422 | 1375 | |
7ab12479 | 1376 | Lisp_Object |
9173a8fb | 1377 | window_from_coordinates (struct frame *f, int x, int y, |
748fa866 | 1378 | enum window_part *part, bool tool_bar_p) |
7ab12479 | 1379 | { |
67492200 | 1380 | Lisp_Object window; |
f95464e4 | 1381 | struct check_window_data cw; |
341f3858 KS |
1382 | enum window_part dummy; |
1383 | ||
1384 | if (part == 0) | |
1385 | part = &dummy; | |
5500c422 | 1386 | |
67492200 | 1387 | window = Qnil; |
9173a8fb | 1388 | cw.window = &window, cw.x = x, cw.y = y; cw.part = part; |
f95464e4 | 1389 | foreach_window (f, check_window_containing, &cw); |
177c0ea7 | 1390 | |
67492200 GM |
1391 | /* If not found above, see if it's in the tool bar window, if a tool |
1392 | bar exists. */ | |
1393 | if (NILP (window) | |
1394 | && tool_bar_p | |
e69b0960 DA |
1395 | && WINDOWP (f->tool_bar_window) |
1396 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 | |
1397 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), x, y) | |
7442878f | 1398 | != ON_NOTHING)) |
5500c422 | 1399 | { |
341f3858 | 1400 | *part = ON_TEXT; |
e69b0960 | 1401 | window = f->tool_bar_window; |
5500c422 | 1402 | } |
37962e60 | 1403 | |
67492200 | 1404 | return window; |
7ab12479 JB |
1405 | } |
1406 | ||
ab17c3f2 | 1407 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 | 1408 | doc: /* Return window containing coordinates X and Y on FRAME. |
496e208e | 1409 | FRAME must be a live frame and defaults to the selected one. |
fdb82f93 PJ |
1410 | The top left corner of the frame is considered to be row 0, |
1411 | column 0. */) | |
5842a27b | 1412 | (Lisp_Object x, Lisp_Object y, Lisp_Object frame) |
7ab12479 | 1413 | { |
d9f07150 | 1414 | struct frame *f = decode_live_frame (frame); |
7ab12479 | 1415 | |
5500c422 | 1416 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1417 | CHECK_NUMBER_OR_FLOAT (x); |
1418 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1419 | |
177c0ea7 | 1420 | return window_from_coordinates (f, |
2c77cf3b RS |
1421 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1422 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1423 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1424 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
9173a8fb | 1425 | 0, 0); |
7ab12479 JB |
1426 | } |
1427 | ||
1428 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1429 | doc: /* Return current value of point in WINDOW. |
496e208e | 1430 | WINDOW must be a live window and defaults to the selected one. |
c85322d0 | 1431 | |
5481664a MR |
1432 | For a nonselected window, this is the value point would have if that |
1433 | window were selected. | |
1434 | ||
1435 | Note that, when WINDOW is selected, the value returned is the same as | |
1436 | that returned by `point' for WINDOW's buffer. It would be more strictly | |
9fc9a531 | 1437 | correct to return the top-level value of `point', outside of any |
5481664a | 1438 | `save-excursion' forms. But that is hard to define. */) |
5842a27b | 1439 | (Lisp_Object window) |
7ab12479 | 1440 | { |
52162052 | 1441 | register struct window *w = decode_live_window (window); |
7ab12479 | 1442 | |
5481664a MR |
1443 | if (w == XWINDOW (selected_window)) |
1444 | return make_number (BUF_PT (XBUFFER (w->buffer))); | |
1445 | else | |
1446 | return Fmarker_position (w->pointm); | |
7ab12479 JB |
1447 | } |
1448 | ||
1449 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1450 | doc: /* Return position at which display currently starts in WINDOW. |
496e208e | 1451 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 | 1452 | This is updated by redisplay or by calling `set-window-start'. */) |
5842a27b | 1453 | (Lisp_Object window) |
7ab12479 | 1454 | { |
52162052 | 1455 | return Fmarker_position (decode_live_window (window)->start); |
7ab12479 JB |
1456 | } |
1457 | ||
8646118f RS |
1458 | /* This is text temporarily removed from the doc string below. |
1459 | ||
fdb82f93 PJ |
1460 | This function returns nil if the position is not currently known. |
1461 | That happens when redisplay is preempted and doesn't finish. | |
1462 | If in that case you want to compute where the end of the window would | |
1463 | have been if redisplay had finished, do this: | |
1464 | (save-excursion | |
1465 | (goto-char (window-start window)) | |
1466 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1467 | (point))") */ |
1468 | ||
478292ed | 1469 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1470 | doc: /* Return position at which display currently ends in WINDOW. |
496e208e | 1471 | WINDOW must be a live window and defaults to the selected one. |
fdb82f93 PJ |
1472 | This is updated by redisplay, when it runs to completion. |
1473 | Simply changing the buffer text or setting `window-start' | |
1474 | does not update this value. | |
87e68db4 | 1475 | Return nil if there is no recorded value. (This can happen if the |
a0a37a6f | 1476 | last redisplay of WINDOW was preempted, and did not finish.) |
fdb82f93 PJ |
1477 | If UPDATE is non-nil, compute the up-to-date position |
1478 | if it isn't already recorded. */) | |
5842a27b | 1479 | (Lisp_Object window, Lisp_Object update) |
7ab12479 JB |
1480 | { |
1481 | Lisp_Object value; | |
52162052 | 1482 | struct window *w = decode_live_window (window); |
5a41ab94 | 1483 | Lisp_Object buf; |
31790df3 | 1484 | struct buffer *b; |
5a41ab94 | 1485 | |
d3d50620 | 1486 | buf = w->buffer; |
b7826503 | 1487 | CHECK_BUFFER (buf); |
b3a10345 | 1488 | b = XBUFFER (buf); |
5a41ab94 | 1489 | |
478292ed | 1490 | if (! NILP (update) |
9d93ce29 | 1491 | && (windows_or_buffers_changed || !w->window_end_valid) |
41791a20 | 1492 | && !noninteractive) |
478292ed | 1493 | { |
cbc099e5 | 1494 | struct text_pos startp; |
4c1acb95 | 1495 | ptrdiff_t charpos = marker_position (w->start); |
cbc099e5 | 1496 | struct it it; |
b3a10345 | 1497 | struct buffer *old_buffer = NULL; |
57b3e30b | 1498 | void *itdata = NULL; |
b3a10345 KS |
1499 | |
1500 | /* Cannot use Fvertical_motion because that function doesn't | |
1501 | cope with variable-height lines. */ | |
1502 | if (b != current_buffer) | |
1503 | { | |
1504 | old_buffer = current_buffer; | |
1505 | set_buffer_internal (b); | |
1506 | } | |
2d6d9df0 GM |
1507 | |
1508 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1509 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1510 | `-l' containing a call to `rmail' with subsequent other |
1511 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1512 | rmail had already narrowed the buffer. */ |
4c1acb95 | 1513 | if (charpos < BEGV) |
cbc099e5 | 1514 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
4c1acb95 | 1515 | else if (charpos > ZV) |
cbc099e5 | 1516 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1517 | else |
d3d50620 | 1518 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
cbc099e5 | 1519 | |
57b3e30b | 1520 | itdata = bidi_shelve_cache (); |
cbc099e5 GM |
1521 | start_display (&it, w, startp); |
1522 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1523 | if (it.current_y < it.last_visible_y) |
1524 | move_it_past_eol (&it); | |
cbc099e5 | 1525 | value = make_number (IT_CHARPOS (it)); |
35928349 | 1526 | bidi_unshelve_cache (itdata, 0); |
177c0ea7 | 1527 | |
99593a9d GM |
1528 | if (old_buffer) |
1529 | set_buffer_internal (old_buffer); | |
478292ed RS |
1530 | } |
1531 | else | |
d3d50620 | 1532 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1533 | |
1534 | return value; | |
1535 | } | |
1536 | ||
a7ca3326 | 1537 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, |
a0a37a6f | 1538 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
52162052 | 1539 | WINDOW must be a live window and defaults to the selected one. |
a0a37a6f | 1540 | Return POS. */) |
5842a27b | 1541 | (Lisp_Object window, Lisp_Object pos) |
7ab12479 | 1542 | { |
52162052 | 1543 | register struct window *w = decode_live_window (window); |
7ab12479 | 1544 | |
f74de345 | 1545 | /* Type of POS is checked by Fgoto_char or set_marker_restricted ... */ |
799417bd | 1546 | |
5481664a MR |
1547 | if (w == XWINDOW (selected_window)) |
1548 | { | |
1549 | if (XBUFFER (w->buffer) == current_buffer) | |
1550 | Fgoto_char (pos); | |
1551 | else | |
1552 | { | |
1553 | struct buffer *old_buffer = current_buffer; | |
1554 | ||
f74de345 DA |
1555 | /* ... but here we want to catch type error before buffer change. */ |
1556 | CHECK_NUMBER_COERCE_MARKER (pos); | |
5481664a MR |
1557 | set_buffer_internal (XBUFFER (w->buffer)); |
1558 | Fgoto_char (pos); | |
1559 | set_buffer_internal (old_buffer); | |
1560 | } | |
1561 | } | |
1562 | else | |
1563 | { | |
1564 | set_marker_restricted (w->pointm, pos, w->buffer); | |
1565 | /* We have to make sure that redisplay updates the window to show | |
1566 | the new value of point. */ | |
1567 | ++windows_or_buffers_changed; | |
1568 | } | |
177c0ea7 | 1569 | |
7ab12479 JB |
1570 | return pos; |
1571 | } | |
1572 | ||
1573 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1574 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
52162052 MR |
1575 | WINDOW must be a live window and defaults to the selected one. Return |
1576 | POS. Optional third arg NOFORCE non-nil inhibits next redisplay from | |
d653c8cc | 1577 | overriding motion of point in order to display at this exact start. */) |
5842a27b | 1578 | (Lisp_Object window, Lisp_Object pos, Lisp_Object noforce) |
7ab12479 | 1579 | { |
52162052 | 1580 | register struct window *w = decode_live_window (window); |
7ab12479 | 1581 | |
d3d50620 | 1582 | set_marker_restricted (w->start, pos, w->buffer); |
f74de345 | 1583 | /* This is not right, but much easier than doing what is right. */ |
c98ff5dd | 1584 | w->start_at_line_beg = 0; |
265a9e55 | 1585 | if (NILP (noforce)) |
c98ff5dd DA |
1586 | w->force_start = 1; |
1587 | w->update_mode_line = 1; | |
80b00b08 DA |
1588 | w->last_modified = 0; |
1589 | w->last_overlay_modified = 0; | |
62c07cc7 JB |
1590 | if (!EQ (window, selected_window)) |
1591 | windows_or_buffers_changed++; | |
ce7fae7d | 1592 | |
7ab12479 JB |
1593 | return pos; |
1594 | } | |
1595 | ||
496e208e MR |
1596 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
1597 | Spos_visible_in_window_p, 0, 3, 0, | |
1598 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. | |
52162052 MR |
1599 | WINDOW must be a live window and defaults to the selected one. |
1600 | ||
1601 | Return nil if that position is scrolled vertically out of view. If a | |
1602 | character is only partially visible, nil is returned, unless the | |
1603 | optional argument PARTIALLY is non-nil. If POS is only out of view | |
1604 | because of horizontal scrolling, return non-nil. If POS is t, it | |
1605 | specifies the position of the last visible glyph in WINDOW. POS | |
1606 | defaults to point in WINDOW; WINDOW defaults to the selected window. | |
496e208e MR |
1607 | |
1608 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
1609 | return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), | |
1610 | where X and Y are the pixel coordinates relative to the top left corner | |
1611 | of the window. The remaining elements are omitted if the character after | |
1612 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
1613 | off-window at the top and bottom of the row, ROWH is the height of the | |
1614 | display row, and VPOS is the row number (0-based) containing POS. */) | |
1615 | (Lisp_Object pos, Lisp_Object window, Lisp_Object partially) | |
1616 | { | |
1617 | register struct window *w; | |
1618 | register EMACS_INT posint; | |
1619 | register struct buffer *buf; | |
1620 | struct text_pos top; | |
1621 | Lisp_Object in_window = Qnil; | |
1622 | int rtop, rbot, rowh, vpos, fully_p = 1; | |
1623 | int x, y; | |
1624 | ||
52162052 | 1625 | w = decode_live_window (window); |
d3d50620 DA |
1626 | buf = XBUFFER (w->buffer); |
1627 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
496e208e MR |
1628 | |
1629 | if (EQ (pos, Qt)) | |
1630 | posint = -1; | |
1631 | else if (!NILP (pos)) | |
1632 | { | |
1633 | CHECK_NUMBER_COERCE_MARKER (pos); | |
1634 | posint = XINT (pos); | |
1635 | } | |
1636 | else if (w == XWINDOW (selected_window)) | |
1637 | posint = PT; | |
1638 | else | |
4c1acb95 | 1639 | posint = marker_position (w->pointm); |
496e208e MR |
1640 | |
1641 | /* If position is above window start or outside buffer boundaries, | |
1642 | or if window start is out of range, position is not visible. */ | |
1643 | if ((EQ (pos, Qt) | |
1644 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
1645 | && CHARPOS (top) >= BUF_BEGV (buf) | |
1646 | && CHARPOS (top) <= BUF_ZV (buf) | |
1647 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) | |
1648 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) | |
1649 | in_window = Qt; | |
1650 | ||
1651 | if (!NILP (in_window) && !NILP (partially)) | |
1652 | { | |
1653 | Lisp_Object part = Qnil; | |
1654 | if (!fully_p) | |
1479c557 | 1655 | part = list4i (rtop, rbot, rowh, vpos); |
496e208e MR |
1656 | in_window = Fcons (make_number (x), |
1657 | Fcons (make_number (y), part)); | |
1658 | } | |
1659 | ||
1660 | return in_window; | |
1661 | } | |
1662 | ||
1663 | DEFUN ("window-line-height", Fwindow_line_height, | |
1664 | Swindow_line_height, 0, 2, 0, | |
1665 | doc: /* Return height in pixels of text line LINE in window WINDOW. | |
52162052 | 1666 | WINDOW must be a live window and defaults to the selected one. |
496e208e MR |
1667 | |
1668 | Return height of current line if LINE is omitted or nil. Return height of | |
1669 | header or mode line if LINE is `header-line' or `mode-line'. | |
1670 | Otherwise, LINE is a text line number starting from 0. A negative number | |
1671 | counts from the end of the window. | |
1672 | ||
1673 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height | |
1674 | in pixels of the visible part of the line, VPOS and YPOS are the | |
1675 | vertical position in lines and pixels of the line, relative to the top | |
1676 | of the first text line, and OFFBOT is the number of off-window pixels at | |
1677 | the bottom of the text line. If there are off-window pixels at the top | |
1678 | of the (first) text line, YPOS is negative. | |
1679 | ||
1680 | Return nil if window display is not up-to-date. In that case, use | |
1681 | `pos-visible-in-window-p' to obtain the information. */) | |
1682 | (Lisp_Object line, Lisp_Object window) | |
1683 | { | |
1684 | register struct window *w; | |
1685 | register struct buffer *b; | |
1686 | struct glyph_row *row, *end_row; | |
d311d28c PE |
1687 | int max_y, crop, i; |
1688 | EMACS_INT n; | |
496e208e | 1689 | |
52162052 | 1690 | w = decode_live_window (window); |
496e208e MR |
1691 | |
1692 | if (noninteractive || w->pseudo_window_p) | |
1693 | return Qnil; | |
1694 | ||
d3d50620 DA |
1695 | CHECK_BUFFER (w->buffer); |
1696 | b = XBUFFER (w->buffer); | |
496e208e MR |
1697 | |
1698 | /* Fail if current matrix is not up-to-date. */ | |
9d93ce29 | 1699 | if (!w->window_end_valid |
496e208e MR |
1700 | || current_buffer->clip_changed |
1701 | || current_buffer->prevent_redisplay_optimizations_p | |
80b00b08 DA |
1702 | || w->last_modified < BUF_MODIFF (b) |
1703 | || w->last_overlay_modified < BUF_OVERLAY_MODIFF (b)) | |
496e208e MR |
1704 | return Qnil; |
1705 | ||
1706 | if (NILP (line)) | |
1707 | { | |
1708 | i = w->cursor.vpos; | |
1709 | if (i < 0 || i >= w->current_matrix->nrows | |
1710 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
1711 | return Qnil; | |
1712 | max_y = window_text_bottom_y (w); | |
1713 | goto found_row; | |
1714 | } | |
1715 | ||
1716 | if (EQ (line, Qheader_line)) | |
1717 | { | |
1718 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) | |
1719 | return Qnil; | |
1720 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
1479c557 | 1721 | return row->enabled_p ? list4i (row->height, 0, 0, 0) : Qnil; |
496e208e MR |
1722 | } |
1723 | ||
1724 | if (EQ (line, Qmode_line)) | |
1725 | { | |
1726 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); | |
89bc0592 | 1727 | return (row->enabled_p ? |
1479c557 PE |
1728 | list4i (row->height, |
1729 | 0, /* not accurate */ | |
1730 | (WINDOW_HEADER_LINE_HEIGHT (w) | |
1731 | + window_text_bottom_y (w)), | |
1732 | 0) | |
89bc0592 | 1733 | : Qnil); |
496e208e MR |
1734 | } |
1735 | ||
1736 | CHECK_NUMBER (line); | |
1737 | n = XINT (line); | |
1738 | ||
1739 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
1740 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
1741 | max_y = window_text_bottom_y (w); | |
1742 | i = 0; | |
1743 | ||
1744 | while ((n < 0 || i < n) | |
1745 | && row <= end_row && row->enabled_p | |
1746 | && row->y + row->height < max_y) | |
1747 | row++, i++; | |
1748 | ||
1749 | if (row > end_row || !row->enabled_p) | |
1750 | return Qnil; | |
1751 | ||
1752 | if (++n < 0) | |
1753 | { | |
1754 | if (-n > i) | |
1755 | return Qnil; | |
1756 | row += n; | |
1757 | i += n; | |
1758 | } | |
1759 | ||
1760 | found_row: | |
1761 | crop = max (0, (row->y + row->height) - max_y); | |
1479c557 | 1762 | return list4i (row->height + min (0, row->y) - crop, i, row->y, crop); |
496e208e | 1763 | } |
d653c8cc | 1764 | |
a7ca3326 | 1765 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, |
d653c8cc MR |
1766 | 0, 1, 0, |
1767 | doc: /* Return non-nil when WINDOW is dedicated to its buffer. | |
12bb3111 | 1768 | More precisely, return the value assigned by the last call of |
7bfac547 MR |
1769 | `set-window-dedicated-p' for WINDOW. Return nil if that function was |
1770 | never called with WINDOW as its argument, or the value set by that | |
52162052 MR |
1771 | function was internally reset since its last call. WINDOW must be a |
1772 | live window and defaults to the selected one. | |
7bfac547 MR |
1773 | |
1774 | When a window is dedicated to its buffer, `display-buffer' will refrain | |
1775 | from displaying another buffer in it. `get-lru-window' and | |
1776 | `get-largest-window' treat dedicated windows specially. | |
1777 | `delete-windows-on', `replace-buffer-in-windows', `quit-window' and | |
1778 | `kill-buffer' can delete a dedicated window and the containing frame. | |
1779 | ||
1780 | Functions like `set-window-buffer' may change the buffer displayed by a | |
1781 | window, unless that window is "strongly" dedicated to its buffer, that | |
1782 | is the value returned by `window-dedicated-p' is t. */) | |
5842a27b | 1783 | (Lisp_Object window) |
7ab12479 | 1784 | { |
52162052 | 1785 | return decode_live_window (window)->dedicated; |
7ab12479 JB |
1786 | } |
1787 | ||
d207b766 RS |
1788 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1789 | Sset_window_dedicated_p, 2, 2, 0, | |
d653c8cc | 1790 | doc: /* Mark WINDOW as dedicated according to FLAG. |
496e208e MR |
1791 | WINDOW must be a live window and defaults to the selected one. FLAG |
1792 | non-nil means mark WINDOW as dedicated to its buffer. FLAG nil means | |
1793 | mark WINDOW as non-dedicated. Return FLAG. | |
d653c8cc | 1794 | |
7bfac547 MR |
1795 | When a window is dedicated to its buffer, `display-buffer' will refrain |
1796 | from displaying another buffer in it. `get-lru-window' and | |
1797 | `get-largest-window' treat dedicated windows specially. | |
496e208e MR |
1798 | `delete-windows-on', `replace-buffer-in-windows', `quit-window', |
1799 | `quit-restore-window' and `kill-buffer' can delete a dedicated window | |
1800 | and the containing frame. | |
7bfac547 MR |
1801 | |
1802 | As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to | |
1803 | its buffer. Functions like `set-window-buffer' may change the buffer | |
1804 | displayed by a window, unless that window is strongly dedicated to its | |
1805 | buffer. If and when `set-window-buffer' displays another buffer in a | |
496e208e | 1806 | window, it also makes sure that the window is no more dedicated. */) |
5842a27b | 1807 | (Lisp_Object window, Lisp_Object flag) |
7ab12479 | 1808 | { |
e8c17b81 PE |
1809 | wset_dedicated (decode_live_window (window), flag); |
1810 | return flag; | |
7ab12479 JB |
1811 | } |
1812 | ||
496e208e MR |
1813 | DEFUN ("window-prev-buffers", Fwindow_prev_buffers, Swindow_prev_buffers, |
1814 | 0, 1, 0, | |
1815 | doc: /* Return buffers previously shown in WINDOW. | |
1816 | WINDOW must be a live window and defaults to the selected one. | |
1817 | ||
94e0933e CY |
1818 | The return value is a list of elements (BUFFER WINDOW-START POS), |
1819 | where BUFFER is a buffer, WINDOW-START is the start position of the | |
1820 | window for that buffer, and POS is a window-specific point value. */) | |
496e208e MR |
1821 | (Lisp_Object window) |
1822 | { | |
52162052 | 1823 | return decode_live_window (window)->prev_buffers; |
496e208e MR |
1824 | } |
1825 | ||
1826 | DEFUN ("set-window-prev-buffers", Fset_window_prev_buffers, | |
1827 | Sset_window_prev_buffers, 2, 2, 0, | |
1828 | doc: /* Set WINDOW's previous buffers to PREV-BUFFERS. | |
94e0933e | 1829 | WINDOW must be a live window and defaults to the selected one. |
496e208e | 1830 | |
94e0933e CY |
1831 | PREV-BUFFERS should be a list of elements (BUFFER WINDOW-START POS), |
1832 | where BUFFER is a buffer, WINDOW-START is the start position of the | |
1833 | window for that buffer, and POS is a window-specific point value. */) | |
496e208e MR |
1834 | (Lisp_Object window, Lisp_Object prev_buffers) |
1835 | { | |
e8c17b81 PE |
1836 | wset_prev_buffers (decode_live_window (window), prev_buffers); |
1837 | return prev_buffers; | |
496e208e MR |
1838 | } |
1839 | ||
1840 | DEFUN ("window-next-buffers", Fwindow_next_buffers, Swindow_next_buffers, | |
1841 | 0, 1, 0, | |
1842 | doc: /* Return list of buffers recently re-shown in WINDOW. | |
1843 | WINDOW must be a live window and defaults to the selected one. */) | |
1844 | (Lisp_Object window) | |
1845 | { | |
52162052 | 1846 | return decode_live_window (window)->next_buffers; |
496e208e MR |
1847 | } |
1848 | ||
1849 | DEFUN ("set-window-next-buffers", Fset_window_next_buffers, | |
1850 | Sset_window_next_buffers, 2, 2, 0, | |
1851 | doc: /* Set WINDOW's next buffers to NEXT-BUFFERS. | |
94e0933e CY |
1852 | WINDOW must be a live window and defaults to the selected one. |
1853 | NEXT-BUFFERS should be a list of buffers. */) | |
496e208e MR |
1854 | (Lisp_Object window, Lisp_Object next_buffers) |
1855 | { | |
e8c17b81 PE |
1856 | wset_next_buffers (decode_live_window (window), next_buffers); |
1857 | return next_buffers; | |
496e208e | 1858 | } |
d653c8cc | 1859 | |
cfbb2395 JB |
1860 | DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters, |
1861 | 0, 1, 0, | |
d653c8cc | 1862 | doc: /* Return the parameters of WINDOW and their values. |
52162052 MR |
1863 | WINDOW must be a valid window and defaults to the selected one. The |
1864 | return value is a list of elements of the form (PARAMETER . VALUE). */) | |
5842a27b | 1865 | (Lisp_Object window) |
cfbb2395 | 1866 | { |
52162052 | 1867 | return Fcopy_alist (decode_valid_window (window)->window_parameters); |
cfbb2395 JB |
1868 | } |
1869 | ||
1870 | DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter, | |
1871 | 2, 2, 0, | |
d653c8cc | 1872 | doc: /* Return WINDOW's value for PARAMETER. |
a8c729af | 1873 | WINDOW can be any window and defaults to the selected one. */) |
5842a27b | 1874 | (Lisp_Object window, Lisp_Object parameter) |
cfbb2395 | 1875 | { |
927abf37 JB |
1876 | Lisp_Object result; |
1877 | ||
a8c729af | 1878 | result = Fassq (parameter, decode_any_window (window)->window_parameters); |
927abf37 | 1879 | return CDR_SAFE (result); |
cfbb2395 JB |
1880 | } |
1881 | ||
cfbb2395 JB |
1882 | DEFUN ("set-window-parameter", Fset_window_parameter, |
1883 | Sset_window_parameter, 3, 3, 0, | |
d653c8cc | 1884 | doc: /* Set WINDOW's value of PARAMETER to VALUE. |
a8c729af | 1885 | WINDOW can be any window and defaults to the selected one. |
52162052 | 1886 | Return VALUE. */) |
5842a27b | 1887 | (Lisp_Object window, Lisp_Object parameter, Lisp_Object value) |
cfbb2395 | 1888 | { |
a8c729af | 1889 | register struct window *w = decode_any_window (window); |
cfbb2395 JB |
1890 | Lisp_Object old_alist_elt; |
1891 | ||
d3d50620 | 1892 | old_alist_elt = Fassq (parameter, w->window_parameters); |
12bb3111 | 1893 | if (NILP (old_alist_elt)) |
e8c17b81 PE |
1894 | wset_window_parameters |
1895 | (w, Fcons (Fcons (parameter, value), w->window_parameters)); | |
cfbb2395 JB |
1896 | else |
1897 | Fsetcdr (old_alist_elt, value); | |
927abf37 | 1898 | return value; |
cfbb2395 JB |
1899 | } |
1900 | ||
7ab12479 JB |
1901 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, |
1902 | 0, 1, 0, | |
c85322d0 | 1903 | doc: /* Return the display-table that WINDOW is using. |
52162052 | 1904 | WINDOW must be a live window and defaults to the selected one. */) |
5842a27b | 1905 | (Lisp_Object window) |
7ab12479 | 1906 | { |
52162052 | 1907 | return decode_live_window (window)->display_table; |
7ab12479 JB |
1908 | } |
1909 | ||
5500c422 GM |
1910 | /* Get the display table for use on window W. This is either W's |
1911 | display table or W's buffer's display table. Ignore the specified | |
1912 | tables if they are not valid; if no valid table is specified, | |
1913 | return 0. */ | |
7ab12479 | 1914 | |
319315f1 | 1915 | struct Lisp_Char_Table * |
971de7fb | 1916 | window_display_table (struct window *w) |
7ab12479 | 1917 | { |
c756cdbe GM |
1918 | struct Lisp_Char_Table *dp = NULL; |
1919 | ||
d3d50620 DA |
1920 | if (DISP_TABLE_P (w->display_table)) |
1921 | dp = XCHAR_TABLE (w->display_table); | |
1922 | else if (BUFFERP (w->buffer)) | |
c756cdbe | 1923 | { |
d3d50620 | 1924 | struct buffer *b = XBUFFER (w->buffer); |
177c0ea7 | 1925 | |
4b4deea2 TT |
1926 | if (DISP_TABLE_P (BVAR (b, display_table))) |
1927 | dp = XCHAR_TABLE (BVAR (b, display_table)); | |
c756cdbe GM |
1928 | else if (DISP_TABLE_P (Vstandard_display_table)) |
1929 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1930 | } | |
171d003c | 1931 | |
c756cdbe | 1932 | return dp; |
7ab12479 JB |
1933 | } |
1934 | ||
3a2712f9 | 1935 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
52162052 MR |
1936 | doc: /* Set WINDOW's display-table to TABLE. |
1937 | WINDOW must be a live window and defaults to the selected one. */) | |
5842a27b | 1938 | (register Lisp_Object window, Lisp_Object table) |
7ab12479 | 1939 | { |
e8c17b81 PE |
1940 | wset_display_table (decode_live_window (window), table); |
1941 | return table; | |
7ab12479 JB |
1942 | } |
1943 | \f | |
562dd5e9 | 1944 | /* Record info on buffer window W is displaying |
7ab12479 | 1945 | when it is about to cease to display that buffer. */ |
dfcf069d | 1946 | static void |
971de7fb | 1947 | unshow_buffer (register struct window *w) |
7ab12479 | 1948 | { |
12cae7c0 | 1949 | Lisp_Object buf; |
b73ea88e | 1950 | struct buffer *b; |
7ab12479 | 1951 | |
d3d50620 | 1952 | buf = w->buffer; |
b73ea88e | 1953 | b = XBUFFER (buf); |
d3d50620 | 1954 | if (b != XMARKER (w->pointm)->buffer) |
1088b922 | 1955 | emacs_abort (); |
7ab12479 | 1956 | |
573f41ab | 1957 | #if 0 |
7ab12479 | 1958 | if (w == XWINDOW (selected_window) |
d3d50620 | 1959 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) |
7ab12479 JB |
1960 | /* Do this except when the selected window's buffer |
1961 | is being removed from some other window. */ | |
573f41ab RS |
1962 | #endif |
1963 | /* last_window_start records the start position that this buffer | |
1964 | had in the last window to be disconnected from it. | |
1965 | Now that this statement is unconditional, | |
1966 | it is possible for the buffer to be displayed in the | |
1967 | selected window, while last_window_start reflects another | |
1968 | window which was recently showing the same buffer. | |
1969 | Some people might say that might be a good thing. Let's see. */ | |
d3d50620 | 1970 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1971 | |
1972 | /* Point in the selected window's buffer | |
1973 | is actually stored in that buffer, and the window's pointm isn't used. | |
1974 | So don't clobber point in that buffer. */ | |
d3d50620 | 1975 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
c4b6914d MR |
1976 | /* Don't clobber point in current buffer either (this could be |
1977 | useful in connection with bug#12208). | |
1978 | && XBUFFER (buf) != current_buffer */ | |
719eaeb1 | 1979 | /* This line helps to fix Horsley's testbug.el bug. */ |
4b4deea2 TT |
1980 | && !(WINDOWP (BVAR (b, last_selected_window)) |
1981 | && w != XWINDOW (BVAR (b, last_selected_window)) | |
d3d50620 | 1982 | && EQ (buf, XWINDOW (BVAR (b, last_selected_window))->buffer))) |
b73ea88e RS |
1983 | temp_set_point_both (b, |
1984 | clip_to_bounds (BUF_BEGV (b), | |
4c1acb95 | 1985 | marker_position (w->pointm), |
b73ea88e RS |
1986 | BUF_ZV (b)), |
1987 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
d3d50620 | 1988 | marker_byte_position (w->pointm), |
b73ea88e | 1989 | BUF_ZV_BYTE (b))); |
177c0ea7 | 1990 | |
4b4deea2 TT |
1991 | if (WINDOWP (BVAR (b, last_selected_window)) |
1992 | && w == XWINDOW (BVAR (b, last_selected_window))) | |
39eb03f1 | 1993 | bset_last_selected_window (b, Qnil); |
7ab12479 JB |
1994 | } |
1995 | ||
1a13852e MR |
1996 | /* Put NEW into the window structure in place of OLD. SETFLAG zero |
1997 | means change window structure only. Otherwise store geometry and | |
1998 | other settings as well. */ | |
dfcf069d | 1999 | static void |
1a13852e | 2000 | replace_window (Lisp_Object old, Lisp_Object new, int setflag) |
7ab12479 JB |
2001 | { |
2002 | register Lisp_Object tem; | |
1a13852e | 2003 | register struct window *o = XWINDOW (old), *n = XWINDOW (new); |
7ab12479 | 2004 | |
1a13852e MR |
2005 | /* If OLD is its frame's root window, then NEW is the new |
2006 | root window for that frame. */ | |
d3d50620 | 2007 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
f00af5b1 | 2008 | fset_root_window (XFRAME (o->frame), new); |
077288cf | 2009 | |
5f24fa51 DA |
2010 | if (setflag) |
2011 | { | |
2012 | n->left_col = o->left_col; | |
2013 | n->top_line = o->top_line; | |
2014 | n->total_cols = o->total_cols; | |
2015 | n->total_lines = o->total_lines; | |
e8c17b81 PE |
2016 | wset_normal_cols (n, o->normal_cols); |
2017 | wset_normal_cols (o, make_float (1.0)); | |
2018 | wset_normal_lines (n, o->normal_lines); | |
2019 | wset_normal_lines (o, make_float (1.0)); | |
1a13852e MR |
2020 | n->desired_matrix = n->current_matrix = 0; |
2021 | n->vscroll = 0; | |
2022 | memset (&n->cursor, 0, sizeof (n->cursor)); | |
2023 | memset (&n->last_cursor, 0, sizeof (n->last_cursor)); | |
2024 | memset (&n->phys_cursor, 0, sizeof (n->phys_cursor)); | |
2025 | n->phys_cursor_type = -1; | |
2026 | n->phys_cursor_width = -1; | |
2027 | n->must_be_updated_p = 0; | |
2028 | n->pseudo_window_p = 0; | |
e8c17b81 PE |
2029 | wset_window_end_vpos (n, make_number (0)); |
2030 | wset_window_end_pos (n, make_number (0)); | |
9d93ce29 | 2031 | n->window_end_valid = 0; |
1a13852e | 2032 | n->frozen_window_start_p = 0; |
1a13852e MR |
2033 | } |
2034 | ||
d3d50620 | 2035 | tem = o->next; |
e8c17b81 | 2036 | wset_next (n, tem); |
265a9e55 | 2037 | if (!NILP (tem)) |
e8c17b81 | 2038 | wset_prev (XWINDOW (tem), new); |
7ab12479 | 2039 | |
d3d50620 | 2040 | tem = o->prev; |
e8c17b81 | 2041 | wset_prev (n, tem); |
265a9e55 | 2042 | if (!NILP (tem)) |
e8c17b81 | 2043 | wset_next (XWINDOW (tem), new); |
7ab12479 | 2044 | |
d3d50620 | 2045 | tem = o->parent; |
e8c17b81 | 2046 | wset_parent (n, tem); |
265a9e55 | 2047 | if (!NILP (tem)) |
7ab12479 | 2048 | { |
d3d50620 | 2049 | if (EQ (XWINDOW (tem)->vchild, old)) |
e8c17b81 | 2050 | wset_vchild (XWINDOW (tem), new); |
d3d50620 | 2051 | if (EQ (XWINDOW (tem)->hchild, old)) |
e8c17b81 | 2052 | wset_hchild (XWINDOW (tem), new); |
7ab12479 | 2053 | } |
1a13852e MR |
2054 | } |
2055 | ||
2056 | /* If window WINDOW and its parent window are iso-combined, merge | |
2057 | WINDOW's children into those of its parent window and mark WINDOW as | |
2058 | deleted. */ | |
2059 | ||
2060 | static void | |
2061 | recombine_windows (Lisp_Object window) | |
2062 | { | |
2063 | struct window *w, *p, *c; | |
2064 | Lisp_Object parent, child; | |
748fa866 | 2065 | bool horflag; |
1a13852e MR |
2066 | |
2067 | w = XWINDOW (window); | |
d3d50620 DA |
2068 | parent = w->parent; |
2069 | if (!NILP (parent) && NILP (w->combination_limit)) | |
1a13852e MR |
2070 | { |
2071 | p = XWINDOW (parent); | |
d3d50620 DA |
2072 | if (((!NILP (p->vchild) && !NILP (w->vchild)) |
2073 | || (!NILP (p->hchild) && !NILP (w->hchild)))) | |
1a13852e MR |
2074 | /* WINDOW and PARENT are both either a vertical or a horizontal |
2075 | combination. */ | |
2076 | { | |
d3d50620 DA |
2077 | horflag = NILP (w->vchild); |
2078 | child = horflag ? w->hchild : w->vchild; | |
1a13852e MR |
2079 | c = XWINDOW (child); |
2080 | ||
2081 | /* Splice WINDOW's children into its parent's children and | |
2082 | assign new normal sizes. */ | |
d3d50620 | 2083 | if (NILP (w->prev)) |
1a13852e | 2084 | if (horflag) |
e8c17b81 | 2085 | wset_hchild (p, child); |
1a13852e | 2086 | else |
e8c17b81 | 2087 | wset_vchild (p, child); |
1a13852e MR |
2088 | else |
2089 | { | |
e8c17b81 PE |
2090 | wset_prev (c, w->prev); |
2091 | wset_next (XWINDOW (w->prev), child); | |
1a13852e MR |
2092 | } |
2093 | ||
2094 | while (c) | |
2095 | { | |
e8c17b81 | 2096 | wset_parent (c, parent); |
1a13852e MR |
2097 | |
2098 | if (horflag) | |
e8c17b81 | 2099 | wset_normal_cols (c, |
5f24fa51 DA |
2100 | make_float ((double) c->total_cols |
2101 | / (double) p->total_cols)); | |
1a13852e | 2102 | else |
e8c17b81 | 2103 | wset_normal_lines (c, |
5f24fa51 DA |
2104 | make_float ((double) c->total_lines |
2105 | / (double) p->total_lines)); | |
1a13852e | 2106 | |
d3d50620 | 2107 | if (NILP (c->next)) |
1a13852e | 2108 | { |
d3d50620 | 2109 | if (!NILP (w->next)) |
1a13852e | 2110 | { |
e8c17b81 PE |
2111 | wset_next (c, w->next); |
2112 | wset_prev (XWINDOW (c->next), child); | |
1a13852e MR |
2113 | } |
2114 | ||
2115 | c = 0; | |
2116 | } | |
2117 | else | |
2118 | { | |
d3d50620 | 2119 | child = c->next; |
1a13852e MR |
2120 | c = XWINDOW (child); |
2121 | } | |
2122 | } | |
7ab12479 | 2123 | |
1a13852e | 2124 | /* WINDOW can be deleted now. */ |
e8c17b81 PE |
2125 | wset_vchild (w, Qnil); |
2126 | wset_hchild (w, Qnil); | |
1a13852e MR |
2127 | } |
2128 | } | |
7ab12479 | 2129 | } |
6198ccd0 MR |
2130 | |
2131 | /* If WINDOW can be deleted, delete it. */ | |
4475bec4 | 2132 | static void |
6198ccd0 MR |
2133 | delete_deletable_window (Lisp_Object window) |
2134 | { | |
2135 | if (!NILP (call1 (Qwindow_deletable_p, window))) | |
2136 | call1 (Qdelete_window, window); | |
2137 | } | |
1a13852e | 2138 | \f |
67492200 GM |
2139 | /*********************************************************************** |
2140 | Window List | |
2141 | ***********************************************************************/ | |
2142 | ||
f95464e4 GM |
2143 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
2144 | pointer. This is a callback function for foreach_window, used in | |
496e208e | 2145 | the window_list function. */ |
67492200 GM |
2146 | |
2147 | static int | |
971de7fb | 2148 | add_window_to_list (struct window *w, void *user_data) |
67492200 | 2149 | { |
f95464e4 | 2150 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
2151 | Lisp_Object window; |
2152 | XSETWINDOW (window, w); | |
212116d6 | 2153 | *list = Fcons (window, *list); |
67492200 GM |
2154 | return 1; |
2155 | } | |
2156 | ||
2157 | ||
2158 | /* Return a list of all windows, for use by next_window. If | |
2159 | Vwindow_list is a list, return that list. Otherwise, build a new | |
2160 | list, cache it in Vwindow_list, and return that. */ | |
2161 | ||
2162 | static Lisp_Object | |
971de7fb | 2163 | window_list (void) |
67492200 GM |
2164 | { |
2165 | if (!CONSP (Vwindow_list)) | |
2166 | { | |
5b04e9f9 | 2167 | Lisp_Object tail, frame; |
212116d6 | 2168 | |
67492200 | 2169 | Vwindow_list = Qnil; |
5b04e9f9 | 2170 | FOR_EACH_FRAME (tail, frame) |
212116d6 GM |
2171 | { |
2172 | Lisp_Object args[2]; | |
2173 | ||
2174 | /* We are visiting windows in canonical order, and add | |
2175 | new windows at the front of args[1], which means we | |
2176 | have to reverse this list at the end. */ | |
2177 | args[1] = Qnil; | |
5b04e9f9 | 2178 | foreach_window (XFRAME (frame), add_window_to_list, &args[1]); |
212116d6 GM |
2179 | args[0] = Vwindow_list; |
2180 | args[1] = Fnreverse (args[1]); | |
2181 | Vwindow_list = Fnconc (2, args); | |
2182 | } | |
67492200 | 2183 | } |
177c0ea7 | 2184 | |
67492200 GM |
2185 | return Vwindow_list; |
2186 | } | |
2187 | ||
2188 | ||
118ea242 GM |
2189 | /* Value is non-zero if WINDOW satisfies the constraints given by |
2190 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 2191 | |
118ea242 GM |
2192 | MINIBUF t means WINDOW may be minibuffer windows. |
2193 | `lambda' means WINDOW may not be a minibuffer window. | |
2194 | a window means a specific minibuffer window | |
67492200 | 2195 | |
118ea242 GM |
2196 | ALL_FRAMES t means search all frames, |
2197 | nil means search just current frame, | |
aa248733 MS |
2198 | `visible' means search just visible frames on the |
2199 | current terminal, | |
2200 | 0 means search visible and iconified frames on the | |
2201 | current terminal, | |
118ea242 GM |
2202 | a window means search the frame that window belongs to, |
2203 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
2204 | |
2205 | static int | |
971de7fb | 2206 | candidate_window_p (Lisp_Object window, Lisp_Object owindow, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 GM |
2207 | { |
2208 | struct window *w = XWINDOW (window); | |
d3d50620 | 2209 | struct frame *f = XFRAME (w->frame); |
67492200 GM |
2210 | int candidate_p = 1; |
2211 | ||
d3d50620 | 2212 | if (!BUFFERP (w->buffer)) |
67492200 GM |
2213 | candidate_p = 0; |
2214 | else if (MINI_WINDOW_P (w) | |
2215 | && (EQ (minibuf, Qlambda) | |
2216 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
2217 | { | |
2218 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
2219 | If it is a window, consider only that one. */ | |
2220 | candidate_p = 0; | |
2221 | } | |
118ea242 GM |
2222 | else if (EQ (all_frames, Qt)) |
2223 | candidate_p = 1; | |
67492200 | 2224 | else if (NILP (all_frames)) |
118ea242 | 2225 | { |
a54e2c05 | 2226 | eassert (WINDOWP (owindow)); |
d3d50620 | 2227 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); |
118ea242 | 2228 | } |
67492200 GM |
2229 | else if (EQ (all_frames, Qvisible)) |
2230 | { | |
de509a60 | 2231 | candidate_p = FRAME_VISIBLE_P (f) |
d3d50620 | 2232 | && (FRAME_TERMINAL (XFRAME (w->frame)) |
de509a60 SM |
2233 | == FRAME_TERMINAL (XFRAME (selected_frame))); |
2234 | ||
67492200 GM |
2235 | } |
2236 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
2237 | { | |
ca2d5566 SM |
2238 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
2239 | #ifdef HAVE_X_WINDOWS | |
2240 | /* Yuck!! If we've just created the frame and the | |
2241 | window-manager requested the user to place it | |
2242 | manually, the window may still not be considered | |
2243 | `visible'. I'd argue it should be at least | |
2244 | something like `iconified', but don't know how to do | |
2245 | that yet. --Stef */ | |
2246 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
2247 | && !f->output_data.x->has_been_visible) | |
2248 | #endif | |
de509a60 | 2249 | ) |
d3d50620 | 2250 | && (FRAME_TERMINAL (XFRAME (w->frame)) |
de509a60 | 2251 | == FRAME_TERMINAL (XFRAME (selected_frame))); |
67492200 | 2252 | } |
67492200 GM |
2253 | else if (WINDOWP (all_frames)) |
2254 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
d3d50620 DA |
2255 | || EQ (XWINDOW (all_frames)->frame, w->frame) |
2256 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 | 2257 | else if (FRAMEP (all_frames)) |
d3d50620 | 2258 | candidate_p = EQ (all_frames, w->frame); |
67492200 GM |
2259 | |
2260 | return candidate_p; | |
2261 | } | |
2262 | ||
2263 | ||
2264 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
aa248733 MS |
2265 | Fwindow_list. See candidate_window_p for the meaning of WINDOW, |
2266 | MINIBUF, and ALL_FRAMES. */ | |
67492200 GM |
2267 | |
2268 | static void | |
971de7fb | 2269 | decode_next_window_args (Lisp_Object *window, Lisp_Object *minibuf, Lisp_Object *all_frames) |
67492200 | 2270 | { |
b9e9df47 | 2271 | struct window *w = decode_live_window (*window); |
177c0ea7 | 2272 | |
b6a9e8b1 | 2273 | XSETWINDOW (*window, w); |
67492200 GM |
2274 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
2275 | does. */ | |
2276 | if (NILP (*minibuf)) | |
2277 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
2278 | else if (!EQ (*minibuf, Qt)) | |
2279 | *minibuf = Qlambda; | |
177c0ea7 | 2280 | |
67492200 GM |
2281 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
2282 | => count none of them, or a specific minibuffer window (the | |
2283 | active one) to count. */ | |
2284 | ||
2285 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
2286 | if (NILP (*all_frames)) | |
f00af5b1 | 2287 | *all_frames |
3a45383a | 2288 | = (!EQ (*minibuf, Qlambda) |
b9e9df47 | 2289 | ? FRAME_MINIBUF_WINDOW (XFRAME (w->frame)) |
3a45383a | 2290 | : Qnil); |
67492200 GM |
2291 | else if (EQ (*all_frames, Qvisible)) |
2292 | ; | |
0f8fe9a2 | 2293 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
2294 | ; |
2295 | else if (FRAMEP (*all_frames)) | |
2296 | ; | |
2297 | else if (!EQ (*all_frames, Qt)) | |
2298 | *all_frames = Qnil; | |
67492200 GM |
2299 | } |
2300 | ||
2301 | ||
ab6d1131 | 2302 | /* Return the next or previous window of WINDOW in cyclic ordering |
67492200 GM |
2303 | of windows. NEXT_P non-zero means return the next window. See the |
2304 | documentation string of next-window for the meaning of MINIBUF and | |
2305 | ALL_FRAMES. */ | |
2306 | ||
2307 | static Lisp_Object | |
971de7fb | 2308 | next_window (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames, int next_p) |
67492200 GM |
2309 | { |
2310 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 2311 | |
67492200 GM |
2312 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
2313 | return the first window on the frame. */ | |
2314 | if (FRAMEP (all_frames) | |
d3d50620 | 2315 | && !EQ (all_frames, XWINDOW (window)->frame)) |
67492200 | 2316 | return Fframe_first_window (all_frames); |
177c0ea7 | 2317 | |
212116d6 | 2318 | if (next_p) |
67492200 GM |
2319 | { |
2320 | Lisp_Object list; | |
177c0ea7 | 2321 | |
67492200 GM |
2322 | /* Find WINDOW in the list of all windows. */ |
2323 | list = Fmemq (window, window_list ()); | |
2324 | ||
2325 | /* Scan forward from WINDOW to the end of the window list. */ | |
2326 | if (CONSP (list)) | |
2327 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 2328 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2329 | break; |
2330 | ||
2331 | /* Scan from the start of the window list up to WINDOW. */ | |
2332 | if (!CONSP (list)) | |
2333 | for (list = Vwindow_list; | |
2334 | CONSP (list) && !EQ (XCAR (list), window); | |
2335 | list = XCDR (list)) | |
118ea242 | 2336 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
2337 | break; |
2338 | ||
2339 | if (CONSP (list)) | |
2340 | window = XCAR (list); | |
2341 | } | |
2342 | else | |
2343 | { | |
2344 | Lisp_Object candidate, list; | |
177c0ea7 | 2345 | |
67492200 GM |
2346 | /* Scan through the list of windows for candidates. If there are |
2347 | candidate windows in front of WINDOW, the last one of these | |
2348 | is the one we want. If there are candidates following WINDOW | |
2349 | in the list, again the last one of these is the one we want. */ | |
2350 | candidate = Qnil; | |
2351 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
2352 | { | |
2353 | if (EQ (XCAR (list), window)) | |
2354 | { | |
2355 | if (WINDOWP (candidate)) | |
2356 | break; | |
2357 | } | |
118ea242 GM |
2358 | else if (candidate_window_p (XCAR (list), window, minibuf, |
2359 | all_frames)) | |
67492200 GM |
2360 | candidate = XCAR (list); |
2361 | } | |
2362 | ||
2363 | if (WINDOWP (candidate)) | |
2364 | window = candidate; | |
2365 | } | |
2366 | ||
2367 | return window; | |
2368 | } | |
7ab12479 | 2369 | |
7ab12479 | 2370 | |
a7ca3326 | 2371 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
a9b9b7f5 | 2372 | doc: /* Return live window after WINDOW in the cyclic ordering of windows. |
87e68db4 | 2373 | WINDOW must be a live window and defaults to the selected one. The |
9397e56f MR |
2374 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to |
2375 | consider. | |
2376 | ||
2377 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2378 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2379 | even if the minibuffer is not active. Any other value means do not | |
2380 | consider the minibuffer window even if the minibuffer is active. | |
2381 | ||
2382 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2383 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2384 | minibuffer counts, consider all windows on all frames that share that | |
2385 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2386 | meanings: | |
2387 | ||
2388 | - t means consider all windows on all existing frames. | |
2389 | ||
2390 | - `visible' means consider all windows on all visible frames. | |
2391 | ||
2392 | - 0 (the number zero) means consider all windows on all visible and | |
2393 | iconified frames. | |
2394 | ||
2395 | - A frame means consider all windows on that frame only. | |
ab6d1131 | 2396 | |
ab6d1131 | 2397 | Anything else means consider all windows on WINDOW's frame and no |
9397e56f | 2398 | others. |
fdb82f93 PJ |
2399 | |
2400 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
2401 | `next-window' to iterate through the entire cycle of acceptable | |
2402 | windows, eventually ending up back at the window you started with. | |
2403 | `previous-window' traverses the same cycle, in the reverse order. */) | |
5842a27b | 2404 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2405 | { |
67492200 | 2406 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
2407 | } |
2408 | ||
67492200 | 2409 | |
26f6279d | 2410 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
a9b9b7f5 | 2411 | doc: /* Return live window before WINDOW in the cyclic ordering of windows. |
9397e56f MR |
2412 | WINDOW must be a live window and defaults to the selected one. The |
2413 | optional arguments MINIBUF and ALL-FRAMES specify the set of windows to | |
2414 | consider. | |
2415 | ||
2416 | MINIBUF nil or omitted means consider the minibuffer window only if the | |
2417 | minibuffer is active. MINIBUF t means consider the minibuffer window | |
2418 | even if the minibuffer is not active. Any other value means do not | |
2419 | consider the minibuffer window even if the minibuffer is active. | |
2420 | ||
2421 | ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame, | |
2422 | plus the minibuffer window if specified by the MINIBUF argument. If the | |
2423 | minibuffer counts, consider all windows on all frames that share that | |
2424 | minibuffer too. The following non-nil values of ALL-FRAMES have special | |
2425 | meanings: | |
2426 | ||
2427 | - t means consider all windows on all existing frames. | |
2428 | ||
2429 | - `visible' means consider all windows on all visible frames. | |
2430 | ||
2431 | - 0 (the number zero) means consider all windows on all visible and | |
2432 | iconified frames. | |
2433 | ||
2434 | - A frame means consider all windows on that frame only. | |
2435 | ||
2436 | Anything else means consider all windows on WINDOW's frame and no | |
2437 | others. | |
ab6d1131 MR |
2438 | |
2439 | If you use consistent values for MINIBUF and ALL-FRAMES, you can | |
2440 | use `previous-window' to iterate through the entire cycle of | |
2441 | acceptable windows, eventually ending up back at the window you | |
2442 | started with. `next-window' traverses the same cycle, in the | |
2443 | reverse order. */) | |
5842a27b | 2444 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
7ab12479 | 2445 | { |
67492200 | 2446 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2447 | } |
2448 | ||
67492200 | 2449 | |
ab6d1131 | 2450 | /* Return a list of windows in cyclic ordering. Arguments are like |
cd2904bd GM |
2451 | for `next-window'. */ |
2452 | ||
2453 | static Lisp_Object | |
971de7fb | 2454 | window_list_1 (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
67492200 | 2455 | { |
403de3b4 | 2456 | Lisp_Object tail, list, rest; |
67492200 GM |
2457 | |
2458 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2459 | list = Qnil; | |
177c0ea7 | 2460 | |
67492200 | 2461 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2462 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2463 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2464 | |
403de3b4 RS |
2465 | /* Rotate the list to start with WINDOW. */ |
2466 | list = Fnreverse (list); | |
2467 | rest = Fmemq (window, list); | |
2468 | if (!NILP (rest) && !EQ (rest, list)) | |
2469 | { | |
1725a7c9 | 2470 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2471 | ; |
2472 | XSETCDR (tail, Qnil); | |
2473 | list = nconc2 (rest, list); | |
2474 | } | |
2475 | return list; | |
67492200 GM |
2476 | } |
2477 | ||
2478 | ||
abde8f8c MR |
2479 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, |
2480 | doc: /* Return a list of windows on FRAME, starting with WINDOW. | |
2481 | FRAME nil or omitted means use the selected frame. | |
49745b39 | 2482 | WINDOW nil or omitted means use the window selected within FRAME. |
abde8f8c MR |
2483 | MINIBUF t means include the minibuffer window, even if it isn't active. |
2484 | MINIBUF nil or omitted means include the minibuffer window only | |
2485 | if it's active. | |
2486 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2487 | (Lisp_Object frame, Lisp_Object minibuf, Lisp_Object window) | |
2488 | { | |
2489 | if (NILP (window)) | |
e69b0960 | 2490 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
abde8f8c MR |
2491 | CHECK_WINDOW (window); |
2492 | if (NILP (frame)) | |
2493 | frame = selected_frame; | |
2494 | ||
d3d50620 | 2495 | if (!EQ (frame, XWINDOW (window)->frame)) |
abde8f8c MR |
2496 | error ("Window is on a different frame"); |
2497 | ||
2498 | return window_list_1 (window, minibuf, frame); | |
2499 | } | |
2500 | ||
2501 | ||
1a13852e MR |
2502 | DEFUN ("window-list-1", Fwindow_list_1, Swindow_list_1, 0, 3, 0, |
2503 | doc: /* Return a list of all live windows. | |
2504 | WINDOW specifies the first window to list and defaults to the selected | |
2505 | window. | |
2506 | ||
2507 | Optional argument MINIBUF nil or omitted means consider the minibuffer | |
2508 | window only if the minibuffer is active. MINIBUF t means consider the | |
2509 | minibuffer window even if the minibuffer is not active. Any other value | |
2510 | means do not consider the minibuffer window even if the minibuffer is | |
2511 | active. | |
2512 | ||
2513 | Optional argument ALL-FRAMES nil or omitted means consider all windows | |
2514 | on WINDOW's frame, plus the minibuffer window if specified by the | |
2515 | MINIBUF argument. If the minibuffer counts, consider all windows on all | |
2516 | frames that share that minibuffer too. The following non-nil values of | |
2517 | ALL-FRAMES have special meanings: | |
2518 | ||
2519 | - t means consider all windows on all existing frames. | |
2520 | ||
2521 | - `visible' means consider all windows on all visible frames. | |
2522 | ||
2523 | - 0 (the number zero) means consider all windows on all visible and | |
2524 | iconified frames. | |
2525 | ||
2526 | - A frame means consider all windows on that frame only. | |
2527 | ||
2528 | Anything else means consider all windows on WINDOW's frame and no | |
2529 | others. | |
2530 | ||
2531 | If WINDOW is not on the list of windows returned, some other window will | |
8350f087 | 2532 | be listed first but no error is signaled. */) |
1a13852e MR |
2533 | (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames) |
2534 | { | |
2535 | return window_list_1 (window, minibuf, all_frames); | |
2536 | } | |
7ab12479 JB |
2537 | \f |
2538 | /* Look at all windows, performing an operation specified by TYPE | |
2539 | with argument OBJ. | |
75d8f668 | 2540 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2541 | Qnil, look at just the selected frame; |
89bca612 | 2542 | Qvisible, look at visible frames; |
75d8f668 | 2543 | a frame, just look at windows on that frame. |
85fe3b5e | 2544 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2545 | |
2546 | enum window_loop | |
2547 | { | |
2548 | WINDOW_LOOP_UNUSED, | |
9397e56f MR |
2549 | GET_BUFFER_WINDOW, /* Arg is buffer */ |
2550 | REPLACE_BUFFER_IN_WINDOWS_SAFELY, /* Arg is buffer */ | |
2551 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ | |
3f8ab7bd | 2552 | CHECK_ALL_WINDOWS |
7ab12479 JB |
2553 | }; |
2554 | ||
2555 | static Lisp_Object | |
971de7fb | 2556 | window_loop (enum window_loop type, Lisp_Object obj, int mini, Lisp_Object frames) |
7ab12479 | 2557 | { |
118ea242 | 2558 | Lisp_Object window, windows, best_window, frame_arg; |
9397e56f | 2559 | int frame_best_window_flag = 0; |
118ea242 | 2560 | struct frame *f; |
ffdc852d | 2561 | struct gcpro gcpro1; |
177c0ea7 | 2562 | |
44fa5b1e JB |
2563 | /* If we're only looping through windows on a particular frame, |
2564 | frame points to that frame. If we're looping through windows | |
2565 | on all frames, frame is 0. */ | |
2566 | if (FRAMEP (frames)) | |
118ea242 | 2567 | f = XFRAME (frames); |
44fa5b1e | 2568 | else if (NILP (frames)) |
118ea242 | 2569 | f = SELECTED_FRAME (); |
7ab12479 | 2570 | else |
118ea242 | 2571 | f = NULL; |
177c0ea7 | 2572 | |
118ea242 | 2573 | if (f) |
89bca612 | 2574 | frame_arg = Qlambda; |
0f8fe9a2 | 2575 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2576 | frame_arg = frames; |
89bca612 RS |
2577 | else if (EQ (frames, Qvisible)) |
2578 | frame_arg = frames; | |
118ea242 GM |
2579 | else |
2580 | frame_arg = Qt; | |
7ab12479 | 2581 | |
89bca612 RS |
2582 | /* frame_arg is Qlambda to stick to one frame, |
2583 | Qvisible to consider all visible frames, | |
2584 | or Qt otherwise. */ | |
2585 | ||
7ab12479 | 2586 | /* Pick a window to start with. */ |
017b2bad | 2587 | if (WINDOWP (obj)) |
118ea242 GM |
2588 | window = obj; |
2589 | else if (f) | |
2590 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2591 | else |
118ea242 | 2592 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2593 | |
cd2904bd | 2594 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2595 | GCPRO1 (windows); |
7ab12479 | 2596 | best_window = Qnil; |
118ea242 | 2597 | |
e67a1dea | 2598 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2599 | { |
118ea242 | 2600 | struct window *w; |
177c0ea7 | 2601 | |
118ea242 GM |
2602 | window = XCAR (windows); |
2603 | w = XWINDOW (window); | |
177c0ea7 | 2604 | |
118ea242 GM |
2605 | /* Note that we do not pay attention here to whether the frame |
2606 | is visible, since Fwindow_list skips non-visible frames if | |
2607 | that is desired, under the control of frame_arg. */ | |
2608 | if (!MINI_WINDOW_P (w) | |
9397e56f MR |
2609 | /* For REPLACE_BUFFER_IN_WINDOWS_SAFELY, we must always |
2610 | consider all windows. */ | |
2611 | || type == REPLACE_BUFFER_IN_WINDOWS_SAFELY | |
7ab12479 JB |
2612 | || (mini && minibuf_level > 0)) |
2613 | switch (type) | |
2614 | { | |
2615 | case GET_BUFFER_WINDOW: | |
d3d50620 | 2616 | if (EQ (w->buffer, obj) |
9397e56f MR |
2617 | /* Don't find any minibuffer window except the one that |
2618 | is currently in use. */ | |
2619 | && (MINI_WINDOW_P (w) ? EQ (window, minibuf_window) : 1)) | |
118ea242 | 2620 | { |
9397e56f MR |
2621 | if (EQ (window, selected_window)) |
2622 | /* Preferably return the selected window. */ | |
ca2d5566 | 2623 | RETURN_UNGCPRO (window); |
d3d50620 | 2624 | else if (EQ (XWINDOW (window)->frame, selected_frame) |
9397e56f MR |
2625 | && !frame_best_window_flag) |
2626 | /* Prefer windows on the current frame (but don't | |
2627 | choose another one if we have one already). */ | |
118ea242 | 2628 | { |
9397e56f MR |
2629 | best_window = window; |
2630 | frame_best_window_flag = 1; | |
7ab12479 | 2631 | } |
9397e56f MR |
2632 | else if (NILP (best_window)) |
2633 | best_window = window; | |
7ab12479 JB |
2634 | } |
2635 | break; | |
2636 | ||
9397e56f MR |
2637 | case REPLACE_BUFFER_IN_WINDOWS_SAFELY: |
2638 | /* We could simply check whether the buffer shown by window | |
2639 | is live, and show another buffer in case it isn't. */ | |
d3d50620 | 2640 | if (EQ (w->buffer, obj)) |
7ab12479 | 2641 | { |
9397e56f | 2642 | /* Undedicate WINDOW. */ |
e8c17b81 | 2643 | wset_dedicated (w, Qnil); |
9397e56f MR |
2644 | /* Make WINDOW show the buffer returned by |
2645 | other_buffer_safely, don't run any hooks. */ | |
2646 | set_window_buffer | |
d3d50620 | 2647 | (window, other_buffer_safely (w->buffer), 0, 0); |
9397e56f MR |
2648 | /* If WINDOW is the selected window, make its buffer |
2649 | current. But do so only if the window shows the | |
2650 | current buffer (Bug#6454). */ | |
2651 | if (EQ (window, selected_window) | |
d3d50620 DA |
2652 | && XBUFFER (w->buffer) == current_buffer) |
2653 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2654 | } |
2655 | break; | |
3f8ab7bd | 2656 | |
6b61353c | 2657 | case REDISPLAY_BUFFER_WINDOWS: |
d3d50620 | 2658 | if (EQ (w->buffer, obj)) |
6b61353c KH |
2659 | { |
2660 | mark_window_display_accurate (window, 0); | |
c98ff5dd | 2661 | w->update_mode_line = 1; |
6b61353c KH |
2662 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; |
2663 | ++update_mode_lines; | |
2664 | best_window = window; | |
2665 | } | |
2666 | break; | |
2667 | ||
3f8ab7bd RS |
2668 | /* Check for a window that has a killed buffer. */ |
2669 | case CHECK_ALL_WINDOWS: | |
d3d50620 | 2670 | if (! NILP (w->buffer) |
e578f381 | 2671 | && !BUFFER_LIVE_P (XBUFFER (w->buffer))) |
1088b922 | 2672 | emacs_abort (); |
118ea242 | 2673 | break; |
6bbd7a29 GM |
2674 | |
2675 | case WINDOW_LOOP_UNUSED: | |
2676 | break; | |
7ab12479 | 2677 | } |
7ab12479 | 2678 | } |
7ab12479 | 2679 | |
118ea242 | 2680 | UNGCPRO; |
7ab12479 | 2681 | return best_window; |
37962e60 | 2682 | } |
605be8af | 2683 | |
3f8ab7bd RS |
2684 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2685 | ||
e3b27b31 | 2686 | extern void check_all_windows (void) EXTERNALLY_VISIBLE; |
233a4a2c | 2687 | void |
971de7fb | 2688 | check_all_windows (void) |
3f8ab7bd RS |
2689 | { |
2690 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2691 | } | |
2692 | ||
a7ca3326 | 2693 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 0, 2, 0, |
fec89261 | 2694 | doc: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none. |
496e208e MR |
2695 | BUFFER-OR-NAME may be a buffer or a buffer name and defaults to |
2696 | the current buffer. | |
2697 | ||
2698 | The optional argument ALL-FRAMES specifies the frames to consider: | |
2699 | ||
2700 | - t means consider all windows on all existing frames. | |
2701 | ||
2702 | - `visible' means consider all windows on all visible frames. | |
2703 | ||
2704 | - 0 (the number zero) means consider all windows on all visible | |
2705 | and iconified frames. | |
2706 | ||
2707 | - A frame means consider all windows on that frame only. | |
2708 | ||
2709 | Any other value of ALL-FRAMES means consider all windows on the | |
2710 | selected frame and no others. */) | |
2711 | (Lisp_Object buffer_or_name, Lisp_Object all_frames) | |
7ab12479 | 2712 | { |
fec89261 MR |
2713 | Lisp_Object buffer; |
2714 | ||
2715 | if (NILP (buffer_or_name)) | |
2716 | buffer = Fcurrent_buffer (); | |
2717 | else | |
2718 | buffer = Fget_buffer (buffer_or_name); | |
2719 | ||
017b2bad | 2720 | if (BUFFERP (buffer)) |
496e208e | 2721 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, all_frames); |
7ab12479 JB |
2722 | else |
2723 | return Qnil; | |
2724 | } | |
2725 | ||
4b66faf3 | 2726 | static Lisp_Object |
1a13852e MR |
2727 | resize_root_window (Lisp_Object window, Lisp_Object delta, Lisp_Object horizontal, Lisp_Object ignore) |
2728 | { | |
5386012d | 2729 | return call4 (Qwindow_resize_root_window, window, delta, horizontal, ignore); |
1a13852e MR |
2730 | } |
2731 | ||
2732 | ||
2733 | DEFUN ("delete-other-windows-internal", Fdelete_other_windows_internal, | |
2734 | Sdelete_other_windows_internal, 0, 2, "", | |
2735 | doc: /* Make WINDOW fill its frame. | |
52162052 MR |
2736 | Only the frame WINDOW is on is affected. WINDOW must be a valid window |
2737 | and defaults to the selected one. | |
1a13852e | 2738 | |
be7f5545 MR |
2739 | Optional argument ROOT, if non-nil, must specify an internal window such |
2740 | that WINDOW is in its window subtree. If this is the case, replace ROOT | |
2741 | by WINDOW and leave alone any windows not part of ROOT's subtree. | |
1a13852e MR |
2742 | |
2743 | When WINDOW is live try to reduce display jumps by keeping the text | |
2744 | previously visible in WINDOW in the same place on the frame. Doing this | |
2745 | depends on the value of (window-start WINDOW), so if calling this | |
2746 | function in a program gives strange scrolling, make sure the | |
2747 | window-start value is reasonable when this function is called. */) | |
2748 | (Lisp_Object window, Lisp_Object root) | |
2749 | { | |
2750 | struct window *w, *r, *s; | |
2751 | struct frame *f; | |
46a4ce9e | 2752 | Lisp_Object sibling, pwindow, swindow IF_LINT (= Qnil), delta; |
c54aa166 | 2753 | ptrdiff_t startpos IF_LINT (= 0), startbyte IF_LINT (= 0); |
46a4ce9e | 2754 | int top IF_LINT (= 0), new_top, resize_failed; |
1a13852e | 2755 | |
52162052 | 2756 | w = decode_valid_window (window); |
1a13852e | 2757 | XSETWINDOW (window, w); |
d3d50620 | 2758 | f = XFRAME (w->frame); |
1a13852e MR |
2759 | |
2760 | if (NILP (root)) | |
2761 | /* ROOT is the frame's root window. */ | |
2762 | { | |
2763 | root = FRAME_ROOT_WINDOW (f); | |
2764 | r = XWINDOW (root); | |
2765 | } | |
2766 | else | |
2767 | /* ROOT must be an ancestor of WINDOW. */ | |
2768 | { | |
52162052 | 2769 | r = decode_valid_window (root); |
d3d50620 | 2770 | pwindow = XWINDOW (window)->parent; |
1a13852e MR |
2771 | while (!NILP (pwindow)) |
2772 | if (EQ (pwindow, root)) | |
2773 | break; | |
2774 | else | |
d3d50620 | 2775 | pwindow = XWINDOW (pwindow)->parent; |
1a13852e MR |
2776 | if (!EQ (pwindow, root)) |
2777 | error ("Specified root is not an ancestor of specified window"); | |
2778 | } | |
2779 | ||
2780 | if (EQ (window, root)) | |
2781 | /* A noop. */ | |
2782 | return Qnil; | |
2783 | /* I don't understand the "top > 0" part below. If we deal with a | |
2784 | standalone minibuffer it would have been caught by the preceding | |
2785 | test. */ | |
2786 | else if (MINI_WINDOW_P (w)) /* && top > 0) */ | |
2787 | error ("Can't expand minibuffer to full frame"); | |
2788 | ||
d3d50620 | 2789 | if (!NILP (w->buffer)) |
1a13852e | 2790 | { |
d3d50620 | 2791 | startpos = marker_position (w->start); |
c54aa166 | 2792 | startbyte = marker_byte_position (w->start); |
1a13852e MR |
2793 | top = WINDOW_TOP_EDGE_LINE (w) |
2794 | - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2795 | /* Make sure WINDOW is the frame's selected window. */ | |
2796 | if (!EQ (window, FRAME_SELECTED_WINDOW (f))) | |
2797 | { | |
d3d50620 | 2798 | if (EQ (selected_frame, w->frame)) |
1a13852e MR |
2799 | Fselect_window (window, Qnil); |
2800 | else | |
f00af5b1 | 2801 | fset_selected_window (f, window); |
1a13852e MR |
2802 | } |
2803 | } | |
2804 | else | |
2805 | { | |
be7f5545 MR |
2806 | /* See if the frame's selected window is a part of the window |
2807 | subtree rooted at WINDOW, by finding all the selected window's | |
2808 | parents and comparing each one with WINDOW. If it isn't we | |
2809 | need a new selected window for this frame. */ | |
1a13852e MR |
2810 | swindow = FRAME_SELECTED_WINDOW (f); |
2811 | while (1) | |
2812 | { | |
2813 | pwindow = swindow; | |
2814 | while (!NILP (pwindow) && !EQ (window, pwindow)) | |
d3d50620 | 2815 | pwindow = XWINDOW (pwindow)->parent; |
1a13852e MR |
2816 | |
2817 | if (EQ (window, pwindow)) | |
2818 | /* If WINDOW is an ancestor of SWINDOW, then SWINDOW is ok | |
2819 | as the new selected window. */ | |
2820 | break; | |
2821 | else | |
2822 | /* Else try the previous window of SWINDOW. */ | |
2823 | swindow = Fprevious_window (swindow, Qlambda, Qnil); | |
2824 | } | |
2825 | ||
2826 | if (!EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
2827 | { | |
d3d50620 | 2828 | if (EQ (selected_frame, w->frame)) |
1a13852e MR |
2829 | Fselect_window (swindow, Qnil); |
2830 | else | |
f00af5b1 | 2831 | fset_selected_window (f, swindow); |
1a13852e MR |
2832 | } |
2833 | } | |
2834 | ||
4d7e6e51 | 2835 | block_input (); |
4c5501e9 EZ |
2836 | if (!FRAME_INITIAL_P (f)) |
2837 | { | |
2838 | Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f); | |
2839 | ||
2840 | /* We are going to free the glyph matrices of WINDOW, and with | |
2841 | that we might lose any information about glyph rows that have | |
2842 | some of their glyphs highlighted in mouse face. (These rows | |
2843 | are marked with a non-zero mouse_face_p flag.) If WINDOW | |
2844 | indeed has some glyphs highlighted in mouse face, signal to | |
2845 | frame's up-to-date hook that mouse highlight was overwritten, | |
2846 | so that it will arrange for redisplaying the highlight. */ | |
2847 | if (EQ (hlinfo->mouse_face_window, window)) | |
2848 | { | |
2849 | hlinfo->mouse_face_beg_row = hlinfo->mouse_face_beg_col = -1; | |
2850 | hlinfo->mouse_face_end_row = hlinfo->mouse_face_end_col = -1; | |
2851 | hlinfo->mouse_face_window = Qnil; | |
2852 | } | |
a6b1c7cc | 2853 | } |
1a13852e MR |
2854 | free_window_matrices (r); |
2855 | ||
2856 | windows_or_buffers_changed++; | |
2857 | Vwindow_list = Qnil; | |
2858 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
46a4ce9e | 2859 | resize_failed = 0; |
1a13852e | 2860 | |
d3d50620 | 2861 | if (NILP (w->buffer)) |
1a13852e | 2862 | { |
be7f5545 | 2863 | /* Resize child windows vertically. */ |
5f24fa51 DA |
2864 | XSETINT (delta, r->total_lines - w->total_lines); |
2865 | w->top_line = r->top_line; | |
1a13852e | 2866 | resize_root_window (window, delta, Qnil, Qnil); |
d615d6d2 MR |
2867 | if (window_resize_check (w, 0)) |
2868 | window_resize_apply (w, 0); | |
1a13852e MR |
2869 | else |
2870 | { | |
2871 | resize_root_window (window, delta, Qnil, Qt); | |
d615d6d2 MR |
2872 | if (window_resize_check (w, 0)) |
2873 | window_resize_apply (w, 0); | |
1a13852e MR |
2874 | else |
2875 | resize_failed = 1; | |
2876 | } | |
2877 | ||
be7f5545 | 2878 | /* Resize child windows horizontally. */ |
1a13852e MR |
2879 | if (!resize_failed) |
2880 | { | |
5f24fa51 DA |
2881 | w->left_col = r->left_col; |
2882 | XSETINT (delta, r->total_cols - w->total_cols); | |
1a13852e | 2883 | resize_root_window (window, delta, Qt, Qnil); |
d615d6d2 MR |
2884 | if (window_resize_check (w, 1)) |
2885 | window_resize_apply (w, 1); | |
1a13852e MR |
2886 | else |
2887 | { | |
2888 | resize_root_window (window, delta, Qt, Qt); | |
d615d6d2 MR |
2889 | if (window_resize_check (w, 1)) |
2890 | window_resize_apply (w, 1); | |
1a13852e MR |
2891 | else |
2892 | resize_failed = 1; | |
2893 | } | |
2894 | } | |
2895 | ||
2896 | if (resize_failed) | |
2897 | /* Play safe, if we still can ... */ | |
2898 | { | |
2899 | window = swindow; | |
2900 | w = XWINDOW (window); | |
2901 | } | |
2902 | } | |
2903 | ||
2904 | /* Cleanly unlink WINDOW from window-tree. */ | |
d3d50620 | 2905 | if (!NILP (w->prev)) |
1a13852e MR |
2906 | /* Get SIBLING above (on the left of) WINDOW. */ |
2907 | { | |
d3d50620 | 2908 | sibling = w->prev; |
1a13852e | 2909 | s = XWINDOW (sibling); |
e8c17b81 | 2910 | wset_next (s, w->next); |
d3d50620 | 2911 | if (!NILP (s->next)) |
e8c17b81 | 2912 | wset_prev (XWINDOW (s->next), sibling); |
1a13852e MR |
2913 | } |
2914 | else | |
2915 | /* Get SIBLING below (on the right of) WINDOW. */ | |
2916 | { | |
d3d50620 | 2917 | sibling = w->next; |
1a13852e | 2918 | s = XWINDOW (sibling); |
e8c17b81 | 2919 | wset_prev (s, Qnil); |
d3d50620 | 2920 | if (!NILP (XWINDOW (w->parent)->vchild)) |
e8c17b81 | 2921 | wset_vchild (XWINDOW (w->parent), sibling); |
1a13852e | 2922 | else |
e8c17b81 | 2923 | wset_hchild (XWINDOW (w->parent), sibling); |
1a13852e MR |
2924 | } |
2925 | ||
be7f5545 | 2926 | /* Delete ROOT and all child windows of ROOT. */ |
d3d50620 | 2927 | if (!NILP (r->vchild)) |
1a13852e | 2928 | { |
d3d50620 | 2929 | delete_all_child_windows (r->vchild); |
e8c17b81 | 2930 | wset_vchild (r, Qnil); |
1a13852e | 2931 | } |
d3d50620 | 2932 | else if (!NILP (r->hchild)) |
1a13852e | 2933 | { |
d3d50620 | 2934 | delete_all_child_windows (r->hchild); |
e8c17b81 | 2935 | wset_hchild (r, Qnil); |
1a13852e MR |
2936 | } |
2937 | ||
2938 | replace_window (root, window, 1); | |
2939 | ||
1a13852e | 2940 | /* This must become SWINDOW anyway ....... */ |
d3d50620 | 2941 | if (!NILP (w->buffer) && !resize_failed) |
1a13852e MR |
2942 | { |
2943 | /* Try to minimize scrolling, by setting the window start to the | |
2944 | point will cause the text at the old window start to be at the | |
2945 | same place on the frame. But don't try to do this if the | |
2946 | window start is outside the visible portion (as might happen | |
2947 | when the display is not current, due to typeahead). */ | |
2948 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); | |
2949 | if (new_top != top | |
d3d50620 DA |
2950 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) |
2951 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) | |
1a13852e MR |
2952 | { |
2953 | struct position pos; | |
2954 | struct buffer *obuf = current_buffer; | |
2955 | ||
d3d50620 | 2956 | Fset_buffer (w->buffer); |
1a13852e MR |
2957 | /* This computation used to temporarily move point, but that |
2958 | can have unwanted side effects due to text properties. */ | |
c54aa166 | 2959 | pos = *vmotion (startpos, startbyte, -top, w); |
1a13852e | 2960 | |
d3d50620 | 2961 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
9d93ce29 | 2962 | w->window_end_valid = 0; |
c98ff5dd DA |
2963 | w->start_at_line_beg = (pos.bytepos == BEGV_BYTE |
2964 | || FETCH_BYTE (pos.bytepos - 1) == '\n'); | |
1a13852e MR |
2965 | /* We need to do this, so that the window-scroll-functions |
2966 | get called. */ | |
c98ff5dd | 2967 | w->optional_new_start = 1; |
1a13852e MR |
2968 | |
2969 | set_buffer_internal (obuf); | |
2970 | } | |
2971 | } | |
2972 | ||
2973 | adjust_glyphs (f); | |
4d7e6e51 | 2974 | unblock_input (); |
1a13852e MR |
2975 | |
2976 | run_window_configuration_change_hook (f); | |
2977 | ||
2978 | return Qnil; | |
2979 | } | |
2980 | ||
2981 | ||
9397e56f MR |
2982 | void |
2983 | replace_buffer_in_windows (Lisp_Object buffer) | |
7ab12479 | 2984 | { |
9397e56f | 2985 | call1 (Qreplace_buffer_in_windows, buffer); |
7ab12479 JB |
2986 | } |
2987 | ||
c6afe371 DA |
2988 | /* If BUFFER is shown in a window, safely replace it with some other |
2989 | buffer in all windows of all frames, even those on other keyboards. */ | |
ff58478b RS |
2990 | |
2991 | void | |
9397e56f | 2992 | replace_buffer_in_windows_safely (Lisp_Object buffer) |
ff58478b | 2993 | { |
c6afe371 DA |
2994 | if (buffer_window_count (XBUFFER (buffer))) |
2995 | { | |
2996 | Lisp_Object tail, frame; | |
ff58478b | 2997 | |
c6afe371 DA |
2998 | /* A single call to window_loop won't do the job because it only |
2999 | considers frames on the current keyboard. So loop manually over | |
3000 | frames, and handle each one. */ | |
3001 | FOR_EACH_FRAME (tail, frame) | |
3002 | window_loop (REPLACE_BUFFER_IN_WINDOWS_SAFELY, buffer, 1, frame); | |
3003 | } | |
ff58478b | 3004 | } |
c6afe371 | 3005 | |
a481b3ea JB |
3006 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the |
3007 | minimum allowable size. */ | |
5500c422 | 3008 | |
605be8af | 3009 | void |
971de7fb | 3010 | check_frame_size (FRAME_PTR frame, int *rows, int *cols) |
a481b3ea | 3011 | { |
628df3bf | 3012 | /* For height, we have to see: |
54b8bcb5 RS |
3013 | how many windows the frame has at minimum (one or two), |
3014 | and whether it has a menu bar or other special stuff at the top. */ | |
3015 | int min_height | |
3016 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
3017 | ? MIN_SAFE_WINDOW_HEIGHT | |
3018 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 3019 | |
5500c422 GM |
3020 | if (FRAME_TOP_MARGIN (frame) > 0) |
3021 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
3022 | |
3023 | if (*rows < min_height) | |
3024 | *rows = min_height; | |
3025 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
3026 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
3027 | } | |
3028 | ||
79fd290e | 3029 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
3030 | Return 1 if window width is ok after adjustment; 0 if window |
3031 | is still too narrow. */ | |
3032 | ||
3033 | static int | |
971de7fb | 3034 | adjust_window_margins (struct window *w) |
949cf20f KS |
3035 | { |
3036 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
3037 | - WINDOW_FRINGE_COLS (w) | |
3038 | - WINDOW_SCROLL_BAR_COLS (w)); | |
3039 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
3040 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
3041 | ||
3042 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
3043 | return 1; | |
3044 | ||
3045 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
3046 | return 0; | |
3047 | ||
3048 | /* Window's text area is too narrow, but reducing the window | |
3049 | margins will fix that. */ | |
3050 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
3051 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
3052 | { | |
3053 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
077288cf | 3054 | { |
e8c17b81 PE |
3055 | wset_left_margin_cols (w, make_number (margin_cols / 2)); |
3056 | wset_right_margin_cols (w, make_number (margin_cols / 2)); | |
077288cf | 3057 | } |
949cf20f | 3058 | else |
e8c17b81 | 3059 | wset_right_margin_cols (w, make_number (margin_cols)); |
949cf20f KS |
3060 | } |
3061 | else | |
e8c17b81 | 3062 | wset_left_margin_cols (w, make_number (margin_cols)); |
949cf20f KS |
3063 | return 1; |
3064 | } | |
562dd5e9 | 3065 | \f |
9397e56f MR |
3066 | /* The following three routines are needed for running a window's |
3067 | configuration change hook. */ | |
562dd5e9 MR |
3068 | static void |
3069 | run_funs (Lisp_Object funs) | |
3070 | { | |
3071 | for (; CONSP (funs); funs = XCDR (funs)) | |
3072 | if (!EQ (XCAR (funs), Qt)) | |
3073 | call0 (XCAR (funs)); | |
3074 | } | |
6b61353c | 3075 | |
9397e56f MR |
3076 | static Lisp_Object |
3077 | select_window_norecord (Lisp_Object window) | |
3078 | { | |
3079 | return WINDOW_LIVE_P (window) | |
3080 | ? Fselect_window (window, Qt) : selected_window; | |
3081 | } | |
3082 | ||
3083 | static Lisp_Object | |
3084 | select_frame_norecord (Lisp_Object frame) | |
3085 | { | |
3086 | return FRAME_LIVE_P (XFRAME (frame)) | |
3087 | ? Fselect_frame (frame, Qt) : selected_frame; | |
3088 | } | |
6b61353c | 3089 | |
562dd5e9 MR |
3090 | void |
3091 | run_window_configuration_change_hook (struct frame *f) | |
3092 | { | |
d311d28c | 3093 | ptrdiff_t count = SPECPDL_INDEX (); |
562dd5e9 MR |
3094 | Lisp_Object frame, global_wcch |
3095 | = Fdefault_value (Qwindow_configuration_change_hook); | |
3096 | XSETFRAME (frame, f); | |
6b61353c | 3097 | |
d1f55f16 | 3098 | if (NILP (Vrun_hooks) || !NILP (inhibit_lisp_code)) |
562dd5e9 | 3099 | return; |
6b61353c | 3100 | |
562dd5e9 MR |
3101 | /* Use the right buffer. Matters when running the local hooks. */ |
3102 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
6b61353c | 3103 | { |
66322887 | 3104 | record_unwind_current_buffer (); |
562dd5e9 MR |
3105 | Fset_buffer (Fwindow_buffer (Qnil)); |
3106 | } | |
6a44ffb3 | 3107 | |
1a13852e MR |
3108 | if (SELECTED_FRAME () != f) |
3109 | { | |
3110 | record_unwind_protect (select_frame_norecord, Fselected_frame ()); | |
3111 | select_frame_norecord (frame); | |
3112 | } | |
3113 | ||
6a44ffb3 SM |
3114 | /* Look for buffer-local values. */ |
3115 | { | |
3116 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
3117 | for (; CONSP (windows); windows = XCDR (windows)) | |
3118 | { | |
3119 | Lisp_Object window = XCAR (windows); | |
3120 | Lisp_Object buffer = Fwindow_buffer (window); | |
3121 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
3122 | buffer))) | |
3123 | { | |
d311d28c | 3124 | ptrdiff_t inner_count = SPECPDL_INDEX (); |
6a44ffb3 SM |
3125 | record_unwind_protect (select_window_norecord, Fselected_window ()); |
3126 | select_window_norecord (window); | |
3127 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
3128 | buffer)); | |
46a4ce9e | 3129 | unbind_to (inner_count, Qnil); |
fec89261 | 3130 | } |
6a44ffb3 SM |
3131 | } |
3132 | } | |
047aaeb9 | 3133 | |
6a44ffb3 SM |
3134 | run_funs (global_wcch); |
3135 | unbind_to (count, Qnil); | |
ef264c42 SM |
3136 | } |
3137 | ||
1a13852e | 3138 | DEFUN ("run-window-configuration-change-hook", Frun_window_configuration_change_hook, |
d9f07150 | 3139 | Srun_window_configuration_change_hook, 0, 1, 0, |
68f8f1c0 | 3140 | doc: /* Run `window-configuration-change-hook' for FRAME. |
d9f07150 | 3141 | If FRAME is omitted or nil, it defaults to the selected frame. */) |
c4b6914d | 3142 | (Lisp_Object frame) |
1a13852e | 3143 | { |
d9f07150 | 3144 | run_window_configuration_change_hook (decode_live_frame (frame)); |
1a13852e MR |
3145 | return Qnil; |
3146 | } | |
3147 | ||
5500c422 GM |
3148 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3149 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3150 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3151 | margins, fringes, and scroll-bar settings of the window are not | |
3152 | reset from the buffer's local settings. */ | |
7ab12479 | 3153 | |
5500c422 | 3154 | void |
748fa866 DA |
3155 | set_window_buffer (Lisp_Object window, Lisp_Object buffer, |
3156 | bool run_hooks_p, bool keep_margins_p) | |
5500c422 GM |
3157 | { |
3158 | struct window *w = XWINDOW (window); | |
3159 | struct buffer *b = XBUFFER (buffer); | |
d311d28c | 3160 | ptrdiff_t count = SPECPDL_INDEX (); |
d3d50620 | 3161 | int samebuf = EQ (buffer, w->buffer); |
7ab12479 | 3162 | |
e8c17b81 | 3163 | wset_buffer (w, buffer); |
86e48436 RS |
3164 | |
3165 | if (EQ (window, selected_window)) | |
39eb03f1 | 3166 | bset_last_selected_window (b, window); |
beb4e312 | 3167 | |
c49a0495 KS |
3168 | /* Let redisplay errors through. */ |
3169 | b->display_error_modiff = 0; | |
3170 | ||
beb4e312 | 3171 | /* Update time stamps of buffer display. */ |
4b4deea2 | 3172 | if (INTEGERP (BVAR (b, display_count))) |
39eb03f1 PE |
3173 | bset_display_count (b, make_number (XINT (BVAR (b, display_count)) + 1)); |
3174 | bset_display_time (b, Fcurrent_time ()); | |
86e48436 | 3175 | |
e8c17b81 PE |
3176 | wset_window_end_pos (w, make_number (0)); |
3177 | wset_window_end_vpos (w, make_number (0)); | |
72af86bd | 3178 | memset (&w->last_cursor, 0, sizeof w->last_cursor); |
9d93ce29 | 3179 | |
c3b232e4 | 3180 | if (!(keep_margins_p && samebuf)) |
23fe745a | 3181 | { /* If we're not actually changing the buffer, don't reset hscroll and |
c3b232e4 SM |
3182 | vscroll. This case happens for example when called from |
3183 | change_frame_size_1, where we use a dummy call to | |
3184 | Fset_window_buffer on the frame's selected window (and no other) | |
3185 | just in order to run window-configuration-change-hook. | |
3186 | Resetting hscroll and vscroll here is problematic for things like | |
3187 | image-mode and doc-view-mode since it resets the image's position | |
3188 | whenever we resize the frame. */ | |
80b00b08 | 3189 | w->hscroll = w->min_hscroll = 0; |
c3b232e4 | 3190 | w->vscroll = 0; |
d3d50620 DA |
3191 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
3192 | set_marker_restricted (w->start, | |
c3b232e4 SM |
3193 | make_number (b->last_window_start), |
3194 | buffer); | |
c98ff5dd DA |
3195 | w->start_at_line_beg = 0; |
3196 | w->force_start = 0; | |
80b00b08 DA |
3197 | w->last_modified = 0; |
3198 | w->last_overlay_modified = 0; | |
c3b232e4 SM |
3199 | } |
3200 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
3201 | I doubt it's worth the trouble. */ | |
7ab12479 | 3202 | windows_or_buffers_changed++; |
5b03d3c0 | 3203 | |
da39107c | 3204 | /* We must select BUFFER for running the window-scroll-functions. */ |
5b03d3c0 RS |
3205 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3206 | because that might itself be a local variable. */ | |
da39107c | 3207 | if (window_initialized) |
5b03d3c0 | 3208 | { |
66322887 | 3209 | record_unwind_current_buffer (); |
5b03d3c0 RS |
3210 | Fset_buffer (buffer); |
3211 | } | |
3212 | ||
d3d50620 | 3213 | XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type); |
a1562258 | 3214 | |
949cf20f KS |
3215 | if (!keep_margins_p) |
3216 | { | |
3217 | /* Set left and right marginal area width etc. from buffer. */ | |
3218 | ||
79fd290e | 3219 | /* This may call adjust_window_margins three times, so |
949cf20f | 3220 | temporarily disable window margins. */ |
d3d50620 DA |
3221 | Lisp_Object save_left = w->left_margin_cols; |
3222 | Lisp_Object save_right = w->right_margin_cols; | |
6b61353c | 3223 | |
e8c17b81 PE |
3224 | wset_left_margin_cols (w, Qnil); |
3225 | wset_right_margin_cols (w, Qnil); | |
949cf20f KS |
3226 | |
3227 | Fset_window_fringes (window, | |
4b4deea2 TT |
3228 | BVAR (b, left_fringe_width), BVAR (b, right_fringe_width), |
3229 | BVAR (b, fringes_outside_margins)); | |
949cf20f KS |
3230 | |
3231 | Fset_window_scroll_bars (window, | |
4b4deea2 TT |
3232 | BVAR (b, scroll_bar_width), |
3233 | BVAR (b, vertical_scroll_bar_type), Qnil); | |
949cf20f | 3234 | |
e8c17b81 PE |
3235 | wset_left_margin_cols (w, save_left); |
3236 | wset_right_margin_cols (w, save_right); | |
6b61353c | 3237 | |
949cf20f | 3238 | Fset_window_margins (window, |
4b4deea2 | 3239 | BVAR (b, left_margin_cols), BVAR (b, right_margin_cols)); |
949cf20f | 3240 | } |
7ab12479 | 3241 | |
5500c422 GM |
3242 | if (run_hooks_p) |
3243 | { | |
3244 | if (! NILP (Vwindow_scroll_functions)) | |
3245 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
d3d50620 | 3246 | Fmarker_position (w->start)); |
ef264c42 | 3247 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
5500c422 | 3248 | } |
543f5fb1 | 3249 | |
5b03d3c0 | 3250 | unbind_to (count, Qnil); |
5500c422 | 3251 | } |
5b03d3c0 | 3252 | |
a7ca3326 | 3253 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
d653c8cc | 3254 | doc: /* Make WINDOW display BUFFER-OR-NAME as its contents. |
52162052 | 3255 | WINDOW must be a live window and defaults to the selected one. |
9397e56f MR |
3256 | BUFFER-OR-NAME must be a buffer or the name of an existing buffer. |
3257 | ||
3258 | Optional third argument KEEP-MARGINS non-nil means that WINDOW's current | |
3259 | display margins, fringe widths, and scroll bar settings are preserved; | |
3260 | the default is to reset these from the local settings for BUFFER-OR-NAME | |
3261 | or the frame defaults. Return nil. | |
d653c8cc | 3262 | |
7bfac547 MR |
3263 | This function throws an error when WINDOW is strongly dedicated to its |
3264 | buffer (that is `window-dedicated-p' returns t for WINDOW) and does not | |
3265 | already display BUFFER-OR-NAME. | |
6cb4a892 | 3266 | |
8fef9de1 MR |
3267 | This function runs `window-scroll-functions' before running |
3268 | `window-configuration-change-hook'. */) | |
5842a27b | 3269 | (register Lisp_Object window, Lisp_Object buffer_or_name, Lisp_Object keep_margins) |
5500c422 | 3270 | { |
d653c8cc | 3271 | register Lisp_Object tem, buffer; |
52162052 | 3272 | register struct window *w = decode_live_window (window); |
5500c422 | 3273 | |
bed0c171 | 3274 | XSETWINDOW (window, w); |
d653c8cc | 3275 | buffer = Fget_buffer (buffer_or_name); |
b7826503 | 3276 | CHECK_BUFFER (buffer); |
e578f381 | 3277 | if (!BUFFER_LIVE_P (XBUFFER (buffer))) |
5500c422 GM |
3278 | error ("Attempt to display deleted buffer"); |
3279 | ||
d3d50620 | 3280 | tem = w->buffer; |
aac0c6e3 MR |
3281 | if (NILP (tem)) |
3282 | error ("Window is deleted"); | |
822995f8 | 3283 | else |
5500c422 | 3284 | { |
9397e56f MR |
3285 | if (!EQ (tem, buffer)) |
3286 | { | |
d3d50620 | 3287 | if (EQ (w->dedicated, Qt)) |
9397e56f MR |
3288 | /* WINDOW is strongly dedicated to its buffer, signal an |
3289 | error. */ | |
3290 | error ("Window is dedicated to `%s'", SDATA (BVAR (XBUFFER (tem), name))); | |
3291 | else | |
3292 | /* WINDOW is weakly dedicated to its buffer, reset | |
e4769531 | 3293 | dedication. */ |
e8c17b81 | 3294 | wset_dedicated (w, Qnil); |
9397e56f MR |
3295 | |
3296 | call1 (Qrecord_window_buffer, window); | |
3297 | } | |
5500c422 GM |
3298 | |
3299 | unshow_buffer (w); | |
3300 | } | |
3301 | ||
949cf20f | 3302 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 | 3303 | |
9397e56f | 3304 | return Qnil; |
c6932ecd | 3305 | } |
b7354ddf | 3306 | \f |
7e5cf297 | 3307 | static Lisp_Object |
971de7fb | 3308 | display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, Lisp_Object override_frame) |
d07f802a | 3309 | { |
87478b52 | 3310 | return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); |
d07f802a RS |
3311 | } |
3312 | ||
6b61353c KH |
3313 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, |
3314 | 0, 1, 0, | |
5a1048a5 | 3315 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 3316 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3317 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c | 3318 | displaying that buffer. */) |
5842a27b | 3319 | (Lisp_Object object) |
6b61353c KH |
3320 | { |
3321 | if (NILP (object)) | |
3322 | { | |
3323 | windows_or_buffers_changed++; | |
3324 | update_mode_lines++; | |
3325 | return Qt; | |
3326 | } | |
3327 | ||
3328 | if (WINDOWP (object)) | |
3329 | { | |
3330 | struct window *w = XWINDOW (object); | |
3331 | mark_window_display_accurate (object, 0); | |
c98ff5dd | 3332 | w->update_mode_line = 1; |
d3d50620 DA |
3333 | if (BUFFERP (w->buffer)) |
3334 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
6b61353c KH |
3335 | ++update_mode_lines; |
3336 | return Qt; | |
3337 | } | |
0cc1039f | 3338 | |
6b61353c KH |
3339 | if (STRINGP (object)) |
3340 | object = Fget_buffer (object); | |
c6afe371 DA |
3341 | if (BUFFERP (object) && BUFFER_LIVE_P (XBUFFER (object)) |
3342 | && buffer_window_count (XBUFFER (object))) | |
6b61353c | 3343 | { |
c6afe371 DA |
3344 | /* If buffer is live and shown in at least one window, find |
3345 | all windows showing this buffer and force update of them. */ | |
6b61353c KH |
3346 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); |
3347 | return NILP (object) ? Qnil : Qt; | |
3348 | } | |
3349 | ||
3350 | /* If nothing suitable was found, just return. | |
3351 | We could signal an error, but this feature will typically be used | |
3352 | asynchronously in timers or process sentinels, so we don't. */ | |
3353 | return Qnil; | |
3354 | } | |
3355 | ||
1f76f6f5 | 3356 | /* Obsolete since 24.3. */ |
7ab12479 | 3357 | void |
971de7fb | 3358 | temp_output_buffer_show (register Lisp_Object buf) |
7ab12479 JB |
3359 | { |
3360 | register struct buffer *old = current_buffer; | |
3361 | register Lisp_Object window; | |
3362 | register struct window *w; | |
3363 | ||
39eb03f1 | 3364 | bset_directory (XBUFFER (buf), BVAR (current_buffer, directory)); |
bccd3dd1 | 3365 | |
7ab12479 | 3366 | Fset_buffer (buf); |
c6367666 | 3367 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3368 | BEGV = BEG; |
3369 | ZV = Z; | |
3370 | SET_PT (BEG); | |
7ab12479 JB |
3371 | set_buffer_internal (old); |
3372 | ||
e67a1dea | 3373 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3374 | call1 (Vtemp_buffer_show_function, buf); |
3375 | else | |
3376 | { | |
4ee88440 | 3377 | window = display_buffer (buf, Qnil, Qnil); |
7ab12479 | 3378 | |
d3d50620 | 3379 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3380 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3381 | Vminibuf_scroll_window = window; |
3382 | w = XWINDOW (window); | |
80b00b08 DA |
3383 | w->hscroll = 0; |
3384 | w->min_hscroll = 0; | |
d3d50620 DA |
3385 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3386 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3387 | |
beb4e312 | 3388 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3389 | and its buffer current. */ |
dee091a3 | 3390 | { |
d311d28c | 3391 | ptrdiff_t count = SPECPDL_INDEX (); |
dee091a3 JD |
3392 | Lisp_Object prev_window, prev_buffer; |
3393 | prev_window = selected_window; | |
3394 | XSETBUFFER (prev_buffer, old); | |
3395 | ||
3396 | /* Select the window that was chosen, for running the hook. | |
3397 | Note: Both Fselect_window and select_window_norecord may | |
3398 | set-buffer to the buffer displayed in the window, | |
3399 | so we need to save the current buffer. --stef */ | |
3400 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3401 | record_unwind_protect (select_window_norecord, prev_window); | |
3402 | Fselect_window (window, Qt); | |
d3d50620 | 3403 | Fset_buffer (w->buffer); |
dee091a3 JD |
3404 | Frun_hooks (1, &Qtemp_buffer_show_hook); |
3405 | unbind_to (count, Qnil); | |
3406 | } | |
2cccc823 | 3407 | } |
7ab12479 JB |
3408 | } |
3409 | \f | |
1a13852e MR |
3410 | /* Make new window, have it replace WINDOW in window-tree, and make |
3411 | WINDOW its only vertical child (HORFLAG 1 means make WINDOW its only | |
3412 | horizontal child). */ | |
3413 | static void | |
748fa866 | 3414 | make_parent_window (Lisp_Object window, bool horflag) |
1a13852e MR |
3415 | { |
3416 | Lisp_Object parent; | |
3417 | register struct window *o, *p; | |
1a13852e MR |
3418 | |
3419 | o = XWINDOW (window); | |
3420 | p = allocate_window (); | |
aa754e6a | 3421 | memcpy ((char *) p + sizeof (struct vectorlike_header), |
62efea5e | 3422 | (char *) o + sizeof (struct vectorlike_header), |
663e2b3f | 3423 | word_size * VECSIZE (struct window)); |
98a07056 DA |
3424 | /* P's buffer slot may change from nil to a buffer. */ |
3425 | adjust_window_count (p, 1); | |
1a13852e MR |
3426 | XSETWINDOW (parent, p); |
3427 | ||
1a13852e MR |
3428 | replace_window (window, parent, 1); |
3429 | ||
e8c17b81 PE |
3430 | wset_next (o, Qnil); |
3431 | wset_prev (o, Qnil); | |
3432 | wset_parent (o, parent); | |
1a13852e | 3433 | |
e8c17b81 PE |
3434 | wset_hchild (p, horflag ? window : Qnil); |
3435 | wset_vchild (p, horflag ? Qnil : window); | |
3436 | wset_start (p, Qnil); | |
3437 | wset_pointm (p, Qnil); | |
3438 | wset_buffer (p, Qnil); | |
3439 | wset_combination_limit (p, Qnil); | |
3440 | wset_window_parameters (p, Qnil); | |
1a13852e MR |
3441 | } |
3442 | ||
496e208e MR |
3443 | /* Make new window from scratch. */ |
3444 | Lisp_Object | |
3445 | make_window (void) | |
3446 | { | |
3447 | Lisp_Object window; | |
3448 | register struct window *w; | |
3449 | ||
3450 | w = allocate_window (); | |
62efea5e DA |
3451 | /* Initialize Lisp data. Note that allocate_window initializes all |
3452 | Lisp data to nil, so do it only for slots which should not be nil. */ | |
e8c17b81 PE |
3453 | wset_normal_lines (w, make_float (1.0)); |
3454 | wset_normal_cols (w, make_float (1.0)); | |
3455 | wset_new_total (w, make_number (0)); | |
3456 | wset_new_normal (w, make_number (0)); | |
3457 | wset_start (w, Fmake_marker ()); | |
3458 | wset_pointm (w, Fmake_marker ()); | |
3459 | wset_vertical_scroll_bar_type (w, Qt); | |
3460 | wset_window_end_pos (w, make_number (0)); | |
3461 | wset_window_end_vpos (w, make_number (0)); | |
e99f70c8 SM |
3462 | /* These Lisp fields are marked specially so they're not set to nil by |
3463 | allocate_window. */ | |
3464 | wset_prev_buffers (w, Qnil); | |
3465 | wset_next_buffers (w, Qnil); | |
62efea5e DA |
3466 | |
3467 | /* Initialize non-Lisp data. Note that allocate_window zeroes out all | |
3468 | non-Lisp data, so do it only for slots which should not be zero. */ | |
496e208e | 3469 | w->nrows_scale_factor = w->ncols_scale_factor = 1; |
496e208e MR |
3470 | w->phys_cursor_type = -1; |
3471 | w->phys_cursor_width = -1; | |
422ff52b | 3472 | w->column_number_displayed = -1; |
62efea5e | 3473 | |
496e208e MR |
3474 | /* Reset window_list. */ |
3475 | Vwindow_list = Qnil; | |
3476 | /* Return window. */ | |
3477 | XSETWINDOW (window, w); | |
3478 | return window; | |
3479 | } | |
3480 | \f | |
3481 | DEFUN ("set-window-new-total", Fset_window_new_total, Sset_window_new_total, 2, 3, 0, | |
3482 | doc: /* Set new total size of WINDOW to SIZE. | |
52162052 | 3483 | WINDOW must be a valid window and defaults to the selected one. |
496e208e MR |
3484 | Return SIZE. |
3485 | ||
3486 | Optional argument ADD non-nil means add SIZE to the new total size of | |
3487 | WINDOW and return the sum. | |
3488 | ||
be7f5545 | 3489 | Note: This function does not operate on any child windows of WINDOW. */) |
496e208e MR |
3490 | (Lisp_Object window, Lisp_Object size, Lisp_Object add) |
3491 | { | |
52162052 | 3492 | struct window *w = decode_valid_window (window); |
496e208e MR |
3493 | |
3494 | CHECK_NUMBER (size); | |
3495 | if (NILP (add)) | |
e8c17b81 | 3496 | wset_new_total (w, size); |
496e208e | 3497 | else |
e8c17b81 | 3498 | wset_new_total (w, make_number (XINT (w->new_total) + XINT (size))); |
496e208e | 3499 | |
d3d50620 | 3500 | return w->new_total; |
496e208e MR |
3501 | } |
3502 | ||
3503 | DEFUN ("set-window-new-normal", Fset_window_new_normal, Sset_window_new_normal, 1, 2, 0, | |
3504 | doc: /* Set new normal size of WINDOW to SIZE. | |
52162052 | 3505 | WINDOW must be a valid window and defaults to the selected one. |
496e208e MR |
3506 | Return SIZE. |
3507 | ||
be7f5545 | 3508 | Note: This function does not operate on any child windows of WINDOW. */) |
496e208e MR |
3509 | (Lisp_Object window, Lisp_Object size) |
3510 | { | |
e8c17b81 PE |
3511 | wset_new_normal (decode_valid_window (window), size); |
3512 | return size; | |
7ab12479 JB |
3513 | } |
3514 | ||
1a13852e MR |
3515 | /* Return 1 if setting w->total_lines (w->total_cols if HORFLAG is |
3516 | non-zero) to w->new_total would result in correct heights (widths) | |
be7f5545 | 3517 | for window W and recursively all child windows of W. |
1a13852e MR |
3518 | |
3519 | Note: This function does not check any of `window-fixed-size-p', | |
3520 | `window-min-height' or `window-min-width'. It does check that window | |
3521 | sizes do not drop below one line (two columns). */ | |
4b66faf3 | 3522 | static int |
748fa866 | 3523 | window_resize_check (struct window *w, bool horflag) |
1a13852e MR |
3524 | { |
3525 | struct window *c; | |
3526 | ||
d3d50620 | 3527 | if (!NILP (w->vchild)) |
1a13852e MR |
3528 | /* W is a vertical combination. */ |
3529 | { | |
d3d50620 | 3530 | c = XWINDOW (w->vchild); |
1a13852e | 3531 | if (horflag) |
be7f5545 | 3532 | /* All child windows of W must have the same width as W. */ |
1a13852e MR |
3533 | { |
3534 | while (c) | |
3535 | { | |
d3d50620 | 3536 | if ((XINT (c->new_total) != XINT (w->new_total)) |
d615d6d2 | 3537 | || !window_resize_check (c, horflag)) |
1a13852e | 3538 | return 0; |
d3d50620 | 3539 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3540 | } |
3541 | return 1; | |
3542 | } | |
3543 | else | |
be7f5545 MR |
3544 | /* The sum of the heights of the child windows of W must equal |
3545 | W's height. */ | |
1a13852e MR |
3546 | { |
3547 | int sum_of_sizes = 0; | |
3548 | while (c) | |
3549 | { | |
d615d6d2 | 3550 | if (!window_resize_check (c, horflag)) |
1a13852e | 3551 | return 0; |
d3d50620 DA |
3552 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); |
3553 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e | 3554 | } |
d3d50620 | 3555 | return (sum_of_sizes == XINT (w->new_total)); |
1a13852e MR |
3556 | } |
3557 | } | |
d3d50620 | 3558 | else if (!NILP (w->hchild)) |
1a13852e MR |
3559 | /* W is a horizontal combination. */ |
3560 | { | |
d3d50620 | 3561 | c = XWINDOW (w->hchild); |
1a13852e | 3562 | if (horflag) |
be7f5545 | 3563 | /* The sum of the widths of the child windows of W must equal W's |
1a13852e MR |
3564 | width. */ |
3565 | { | |
3566 | int sum_of_sizes = 0; | |
3567 | while (c) | |
3568 | { | |
d615d6d2 | 3569 | if (!window_resize_check (c, horflag)) |
1a13852e | 3570 | return 0; |
d3d50620 DA |
3571 | sum_of_sizes = sum_of_sizes + XINT (c->new_total); |
3572 | c = NILP (c->next) ? 0 : XWINDOW (c->next); | |
1a13852e | 3573 | } |
d3d50620 | 3574 | return (sum_of_sizes == XINT (w->new_total)); |
1a13852e MR |
3575 | } |
3576 | else | |
be7f5545 | 3577 | /* All child windows of W must have the same height as W. */ |
1a13852e MR |
3578 | { |
3579 | while (c) | |
3580 | { | |
d3d50620 | 3581 | if ((XINT (c->new_total) != XINT (w->new_total)) |
d615d6d2 | 3582 | || !window_resize_check (c, horflag)) |
1a13852e | 3583 | return 0; |
d3d50620 | 3584 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3585 | } |
3586 | return 1; | |
3587 | } | |
3588 | } | |
3589 | else | |
3590 | /* A leaf window. Make sure it's not too small. The following | |
3591 | hardcodes the values of `window-safe-min-width' (2) and | |
3592 | `window-safe-min-height' (1) which are defined in window.el. */ | |
d3d50620 | 3593 | return XINT (w->new_total) >= (horflag ? 2 : 1); |
1a13852e MR |
3594 | } |
3595 | ||
3596 | /* Set w->total_lines (w->total_cols if HORIZONTAL is non-zero) to | |
be7f5545 MR |
3597 | w->new_total for window W and recursively all child windows of W. |
3598 | Also calculate and assign the new vertical (horizontal) start | |
3599 | positions of each of these windows. | |
1a13852e MR |
3600 | |
3601 | This function does not perform any error checks. Make sure you have | |
d615d6d2 | 3602 | run window_resize_check on W before applying this function. */ |
440a42e3 | 3603 | static void |
748fa866 | 3604 | window_resize_apply (struct window *w, bool horflag) |
1a13852e | 3605 | { |
46a4ce9e | 3606 | struct window *c; |
1a13852e MR |
3607 | int pos; |
3608 | ||
3609 | /* Note: Assigning new_normal requires that the new total size of the | |
3610 | parent window has been set *before*. */ | |
3611 | if (horflag) | |
3612 | { | |
5f24fa51 | 3613 | w->total_cols = XFASTINT (w->new_total); |
d3d50620 | 3614 | if (NUMBERP (w->new_normal)) |
e8c17b81 | 3615 | wset_normal_cols (w, w->new_normal); |
1a13852e | 3616 | |
5f24fa51 | 3617 | pos = w->left_col; |
1a13852e MR |
3618 | } |
3619 | else | |
3620 | { | |
5f24fa51 | 3621 | w->total_lines = XFASTINT (w->new_total); |
d3d50620 | 3622 | if (NUMBERP (w->new_normal)) |
e8c17b81 | 3623 | wset_normal_lines (w, w->new_normal); |
1a13852e | 3624 | |
5f24fa51 | 3625 | pos = w->top_line; |
1a13852e MR |
3626 | } |
3627 | ||
d3d50620 | 3628 | if (!NILP (w->vchild)) |
1a13852e MR |
3629 | /* W is a vertical combination. */ |
3630 | { | |
d3d50620 | 3631 | c = XWINDOW (w->vchild); |
1a13852e MR |
3632 | while (c) |
3633 | { | |
3634 | if (horflag) | |
5f24fa51 | 3635 | c->left_col = pos; |
1a13852e | 3636 | else |
5f24fa51 | 3637 | c->top_line = pos; |
d615d6d2 | 3638 | window_resize_apply (c, horflag); |
1a13852e | 3639 | if (!horflag) |
5f24fa51 | 3640 | pos = pos + c->total_lines; |
d3d50620 | 3641 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3642 | } |
3643 | } | |
d3d50620 | 3644 | else if (!NILP (w->hchild)) |
1a13852e MR |
3645 | /* W is a horizontal combination. */ |
3646 | { | |
d3d50620 | 3647 | c = XWINDOW (w->hchild); |
1a13852e MR |
3648 | while (c) |
3649 | { | |
3650 | if (horflag) | |
5f24fa51 | 3651 | c->left_col = pos; |
1a13852e | 3652 | else |
5f24fa51 | 3653 | c->top_line = pos; |
d615d6d2 | 3654 | window_resize_apply (c, horflag); |
1a13852e | 3655 | if (horflag) |
5f24fa51 | 3656 | pos = pos + c->total_cols; |
d3d50620 | 3657 | c = NILP (c->next) ? 0 : XWINDOW (c->next); |
1a13852e MR |
3658 | } |
3659 | } | |
3660 | ||
3661 | /* Clear out some redisplay caches. */ | |
80b00b08 DA |
3662 | w->last_modified = 0; |
3663 | w->last_overlay_modified = 0; | |
1a13852e MR |
3664 | } |
3665 | ||
3666 | ||
d9f07150 | 3667 | DEFUN ("window-resize-apply", Fwindow_resize_apply, Swindow_resize_apply, 0, 2, 0, |
1a13852e | 3668 | doc: /* Apply requested size values for window-tree of FRAME. |
d9f07150 DA |
3669 | If FRAME is omitted or nil, it defaults to the selected frame. |
3670 | ||
3671 | Optional argument HORIZONTAL omitted or nil means apply requested | |
3672 | height values. HORIZONTAL non-nil means apply requested width values. | |
1a13852e MR |
3673 | |
3674 | This function checks whether the requested values sum up to a valid | |
be7f5545 MR |
3675 | window layout, recursively assigns the new sizes of all child windows |
3676 | and calculates and assigns the new start positions of these windows. | |
1a13852e MR |
3677 | |
3678 | Note: This function does not check any of `window-fixed-size-p', | |
3679 | `window-min-height' or `window-min-width'. All these checks have to | |
3680 | be applied on the Elisp level. */) | |
3681 | (Lisp_Object frame, Lisp_Object horizontal) | |
3682 | { | |
d9f07150 DA |
3683 | struct frame *f = decode_live_frame (frame); |
3684 | struct window *r = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
748fa866 | 3685 | bool horflag = !NILP (horizontal); |
1a13852e | 3686 | |
d615d6d2 | 3687 | if (!window_resize_check (r, horflag) |
5f24fa51 DA |
3688 | || (XINT (r->new_total) |
3689 | != (horflag ? r->total_cols : r->total_lines))) | |
1a13852e MR |
3690 | return Qnil; |
3691 | ||
4d7e6e51 | 3692 | block_input (); |
d615d6d2 | 3693 | window_resize_apply (r, horflag); |
1a13852e MR |
3694 | |
3695 | windows_or_buffers_changed++; | |
3696 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3697 | ||
3698 | adjust_glyphs (f); | |
4d7e6e51 | 3699 | unblock_input (); |
1a13852e MR |
3700 | |
3701 | run_window_configuration_change_hook (f); | |
3702 | ||
3703 | return Qt; | |
3704 | } | |
3705 | ||
3706 | ||
3707 | /* Resize frame F's windows when number of lines of F is set to SIZE. | |
3708 | HORFLAG 1 means resize windows when number of columns of F is set to | |
3709 | SIZE. | |
3710 | ||
3711 | This function can delete all windows but the selected one in order to | |
3712 | satisfy the request. The result will be meaningful if and only if | |
3713 | F's windows have meaningful sizes when you call this. */ | |
3714 | void | |
748fa866 | 3715 | resize_frame_windows (struct frame *f, int size, bool horflag) |
1a13852e | 3716 | { |
e69b0960 | 3717 | Lisp_Object root = f->root_window; |
1a13852e | 3718 | struct window *r = XWINDOW (root); |
e69b0960 | 3719 | Lisp_Object mini = f->minibuffer_window; |
1a13852e MR |
3720 | struct window *m; |
3721 | /* new_size is the new size of the frame's root window. */ | |
3722 | int new_size = (horflag | |
3723 | ? size | |
3724 | : (size | |
3725 | - FRAME_TOP_MARGIN (f) | |
3726 | - ((FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3727 | ? 1 : 0))); | |
3728 | ||
5f24fa51 | 3729 | r->top_line = FRAME_TOP_MARGIN (f); |
d3d50620 | 3730 | if (NILP (r->vchild) && NILP (r->hchild)) |
1a13852e MR |
3731 | /* For a leaf root window just set the size. */ |
3732 | if (horflag) | |
5f24fa51 | 3733 | r->total_cols = new_size; |
1a13852e | 3734 | else |
5f24fa51 | 3735 | r->total_lines = new_size; |
1a13852e MR |
3736 | else |
3737 | { | |
3738 | /* old_size is the old size of the frame's root window. */ | |
5f24fa51 | 3739 | int old_size = horflag ? r->total_cols : r->total_lines; |
1a13852e MR |
3740 | Lisp_Object delta; |
3741 | ||
3742 | XSETINT (delta, new_size - old_size); | |
3743 | /* Try a "normal" resize first. */ | |
3744 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qnil); | |
3a45383a | 3745 | if (window_resize_check (r, horflag) |
d3d50620 | 3746 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3747 | window_resize_apply (r, horflag); |
1a13852e MR |
3748 | else |
3749 | { | |
3750 | /* Try with "reasonable" minimum sizes next. */ | |
3751 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qt); | |
d615d6d2 | 3752 | if (window_resize_check (r, horflag) |
d3d50620 | 3753 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3754 | window_resize_apply (r, horflag); |
1a13852e MR |
3755 | else |
3756 | { | |
3757 | /* Finally, try with "safe" minimum sizes. */ | |
3758 | resize_root_window (root, delta, horflag ? Qt : Qnil, Qsafe); | |
d615d6d2 | 3759 | if (window_resize_check (r, horflag) |
d3d50620 | 3760 | && new_size == XINT (r->new_total)) |
d615d6d2 | 3761 | window_resize_apply (r, horflag); |
1a13852e MR |
3762 | else |
3763 | { | |
3764 | /* We lost. Delete all windows but the frame's | |
3765 | selected one. */ | |
e69b0960 | 3766 | root = f->selected_window; |
1a13852e MR |
3767 | Fdelete_other_windows_internal (root, Qnil); |
3768 | if (horflag) | |
5f24fa51 | 3769 | XWINDOW (root)->total_cols = new_size; |
1a13852e | 3770 | else |
5f24fa51 | 3771 | XWINDOW (root)->total_lines = new_size; |
1a13852e MR |
3772 | } |
3773 | } | |
3774 | } | |
3775 | } | |
3776 | ||
3777 | if (FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f)) | |
3778 | { | |
3779 | m = XWINDOW (mini); | |
3780 | if (horflag) | |
5f24fa51 | 3781 | m->total_cols = size; |
1a13852e MR |
3782 | else |
3783 | { | |
3784 | /* Are we sure we always want 1 line here? */ | |
5f24fa51 DA |
3785 | m->total_lines = 1; |
3786 | m->top_line = r->top_line + r->total_lines; | |
1a13852e MR |
3787 | } |
3788 | } | |
dca778d5 MR |
3789 | |
3790 | windows_or_buffers_changed++; | |
1a13852e MR |
3791 | } |
3792 | ||
3793 | ||
3794 | DEFUN ("split-window-internal", Fsplit_window_internal, Ssplit_window_internal, 4, 4, 0, | |
3795 | doc: /* Split window OLD. | |
3796 | Second argument TOTAL-SIZE specifies the number of lines or columns of the | |
9397e56f | 3797 | new window. In any case TOTAL-SIZE must be a positive integer. |
1a13852e MR |
3798 | |
3799 | Third argument SIDE nil (or `below') specifies that the new window shall | |
3800 | be located below WINDOW. SIDE `above' means the new window shall be | |
3801 | located above WINDOW. In both cases TOTAL-SIZE specifies the number of | |
3802 | lines of the new window including space reserved for the mode and/or | |
3803 | header line. | |
3804 | ||
3805 | SIDE t (or `right') specifies that the new window shall be located on | |
3806 | the right side of WINDOW. SIDE `left' means the new window shall be | |
3807 | located on the left of WINDOW. In both cases TOTAL-SIZE specifies the | |
3808 | number of columns of the new window including space reserved for fringes | |
3809 | and the scrollbar or a divider column. | |
3810 | ||
3811 | Fourth argument NORMAL-SIZE specifies the normal size of the new window | |
3812 | according to the SIDE argument. | |
3813 | ||
3814 | The new total and normal sizes of all involved windows must have been | |
3815 | set correctly. See the code of `split-window' for how this is done. */) | |
3816 | (Lisp_Object old, Lisp_Object total_size, Lisp_Object side, Lisp_Object normal_size) | |
3817 | { | |
3818 | /* OLD (*o) is the window we have to split. (*p) is either OLD's | |
3819 | parent window or an internal window we have to install as OLD's new | |
3820 | parent. REFERENCE (*r) must denote a live window, or is set to OLD | |
3821 | provided OLD is a leaf window, or to the frame's selected window. | |
3822 | NEW (*n) is the new window created with some parameters taken from | |
3823 | REFERENCE (*r). */ | |
3824 | register Lisp_Object new, frame, reference; | |
3825 | register struct window *o, *p, *n, *r; | |
3826 | struct frame *f; | |
748fa866 | 3827 | bool horflag |
1a13852e MR |
3828 | /* HORFLAG is 1 when we split side-by-side, 0 otherwise. */ |
3829 | = EQ (side, Qt) || EQ (side, Qleft) || EQ (side, Qright); | |
b6f67890 | 3830 | int combination_limit = 0; |
1a13852e MR |
3831 | |
3832 | CHECK_WINDOW (old); | |
3833 | o = XWINDOW (old); | |
3834 | frame = WINDOW_FRAME (o); | |
3835 | f = XFRAME (frame); | |
3836 | ||
3837 | CHECK_NUMBER (total_size); | |
3838 | ||
b6f67890 MR |
3839 | /* Set combination_limit to 1 if we have to make a new parent window. |
3840 | We do that if either `window-combination-limit' is t, or OLD has no | |
3841 | parent, or OLD is ortho-combined. */ | |
3842 | combination_limit = | |
8e17c9ba | 3843 | EQ (Vwindow_combination_limit, Qt) |
d3d50620 | 3844 | || NILP (o->parent) |
1a13852e | 3845 | || NILP (horflag |
d3d50620 DA |
3846 | ? (XWINDOW (o->parent)->hchild) |
3847 | : (XWINDOW (o->parent)->vchild)); | |
1a13852e MR |
3848 | |
3849 | /* We need a live reference window to initialize some parameters. */ | |
3850 | if (WINDOW_LIVE_P (old)) | |
3851 | /* OLD is live, use it as reference window. */ | |
3852 | reference = old; | |
3853 | else | |
3854 | /* Use the frame's selected window as reference window. */ | |
3855 | reference = FRAME_SELECTED_WINDOW (f); | |
3856 | r = XWINDOW (reference); | |
3857 | ||
3858 | /* The following bugs are caught by `split-window'. */ | |
3859 | if (MINI_WINDOW_P (o)) | |
3860 | error ("Attempt to split minibuffer window"); | |
3861 | else if (XINT (total_size) < (horflag ? 2 : 1)) | |
3862 | error ("Size of new window too small (after split)"); | |
a0c2d0ae MR |
3863 | else if (!combination_limit && !NILP (Vwindow_combination_resize)) |
3864 | /* `window-combination-resize' non-nil means try to resize OLD's siblings | |
1a13852e MR |
3865 | proportionally. */ |
3866 | { | |
d3d50620 | 3867 | p = XWINDOW (o->parent); |
1a13852e | 3868 | /* Temporarily pretend we split the parent window. */ |
e8c17b81 | 3869 | wset_new_total |
5f24fa51 | 3870 | (p, make_number ((horflag ? p->total_cols : p->total_lines) |
077288cf | 3871 | - XINT (total_size))); |
d615d6d2 | 3872 | if (!window_resize_check (p, horflag)) |
1a13852e MR |
3873 | error ("Window sizes don't fit"); |
3874 | else | |
3875 | /* Undo the temporary pretension. */ | |
5f24fa51 DA |
3876 | wset_new_total (p, make_number |
3877 | (horflag ? p->total_cols : p->total_lines)); | |
1a13852e MR |
3878 | } |
3879 | else | |
3880 | { | |
d615d6d2 | 3881 | if (!window_resize_check (o, horflag)) |
1a13852e | 3882 | error ("Resizing old window failed"); |
d3d50620 | 3883 | else if (XINT (total_size) + XINT (o->new_total) |
5f24fa51 | 3884 | != (horflag ? o->total_cols : o->total_lines)) |
1a13852e MR |
3885 | error ("Sum of sizes of old and new window don't fit"); |
3886 | } | |
3887 | ||
3888 | /* This is our point of no return. */ | |
b6f67890 | 3889 | if (combination_limit) |
1a13852e MR |
3890 | { |
3891 | /* Save the old value of o->normal_cols/lines. It gets corrupted | |
3892 | by make_parent_window and we need it below for assigning it to | |
3893 | p->new_normal. */ | |
3a45383a | 3894 | Lisp_Object new_normal |
d3d50620 | 3895 | = horflag ? o->normal_cols : o->normal_lines; |
1a13852e MR |
3896 | |
3897 | make_parent_window (old, horflag); | |
d3d50620 | 3898 | p = XWINDOW (o->parent); |
fdaf534a MR |
3899 | if (EQ (Vwindow_combination_limit, Qt)) |
3900 | /* Store t in the new parent's combination_limit slot to avoid | |
3901 | that its children get merged into another window. */ | |
3902 | wset_combination_limit (p, Qt); | |
1a13852e | 3903 | /* These get applied below. */ |
5f24fa51 DA |
3904 | wset_new_total (p, make_number |
3905 | (horflag ? o->total_cols : o->total_lines)); | |
e8c17b81 | 3906 | wset_new_normal (p, new_normal); |
1a13852e MR |
3907 | } |
3908 | else | |
d3d50620 | 3909 | p = XWINDOW (o->parent); |
1a13852e MR |
3910 | |
3911 | windows_or_buffers_changed++; | |
3912 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
3913 | new = make_window (); | |
3914 | n = XWINDOW (new); | |
e8c17b81 PE |
3915 | wset_frame (n, frame); |
3916 | wset_parent (n, o->parent); | |
3917 | wset_vchild (n, Qnil); | |
3918 | wset_hchild (n, Qnil); | |
1a13852e MR |
3919 | |
3920 | if (EQ (side, Qabove) || EQ (side, Qleft)) | |
3921 | { | |
e8c17b81 | 3922 | wset_prev (n, o->prev); |
d3d50620 | 3923 | if (NILP (n->prev)) |
1a13852e | 3924 | if (horflag) |
e8c17b81 | 3925 | wset_hchild (p, new); |
1a13852e | 3926 | else |
e8c17b81 | 3927 | wset_vchild (p, new); |
1a13852e | 3928 | else |
e8c17b81 PE |
3929 | wset_next (XWINDOW (n->prev), new); |
3930 | wset_next (n, old); | |
3931 | wset_prev (o, new); | |
1a13852e MR |
3932 | } |
3933 | else | |
3934 | { | |
e8c17b81 | 3935 | wset_next (n, o->next); |
d3d50620 | 3936 | if (!NILP (n->next)) |
e8c17b81 PE |
3937 | wset_prev (XWINDOW (n->next), new); |
3938 | wset_prev (n, old); | |
3939 | wset_next (o, new); | |
1a13852e MR |
3940 | } |
3941 | ||
9d93ce29 | 3942 | n->window_end_valid = 0; |
1a13852e MR |
3943 | memset (&n->last_cursor, 0, sizeof n->last_cursor); |
3944 | ||
3945 | /* Get special geometry settings from reference window. */ | |
e8c17b81 PE |
3946 | wset_left_margin_cols (n, r->left_margin_cols); |
3947 | wset_right_margin_cols (n, r->right_margin_cols); | |
3948 | wset_left_fringe_width (n, r->left_fringe_width); | |
3949 | wset_right_fringe_width (n, r->right_fringe_width); | |
1a13852e | 3950 | n->fringes_outside_margins = r->fringes_outside_margins; |
e8c17b81 PE |
3951 | wset_scroll_bar_width (n, r->scroll_bar_width); |
3952 | wset_vertical_scroll_bar_type (n, r->vertical_scroll_bar_type); | |
1a13852e | 3953 | |
1a13852e MR |
3954 | /* Directly assign orthogonal coordinates and sizes. */ |
3955 | if (horflag) | |
3956 | { | |
5f24fa51 DA |
3957 | n->top_line = o->top_line; |
3958 | n->total_lines = o->total_lines; | |
1a13852e MR |
3959 | } |
3960 | else | |
3961 | { | |
5f24fa51 DA |
3962 | n->left_col = o->left_col; |
3963 | n->total_cols = o->total_cols; | |
1a13852e MR |
3964 | } |
3965 | ||
d615d6d2 | 3966 | /* Iso-coordinates and sizes are assigned by window_resize_apply, |
1a13852e | 3967 | get them ready here. */ |
e8c17b81 PE |
3968 | wset_new_total (n, total_size); |
3969 | wset_new_normal (n, normal_size); | |
1a13852e | 3970 | |
4d7e6e51 | 3971 | block_input (); |
d615d6d2 | 3972 | window_resize_apply (p, horflag); |
1a13852e MR |
3973 | adjust_glyphs (f); |
3974 | /* Set buffer of NEW to buffer of reference window. Don't run | |
3975 | any hooks. */ | |
d3d50620 | 3976 | set_window_buffer (new, r->buffer, 0, 1); |
4d7e6e51 | 3977 | unblock_input (); |
1a13852e MR |
3978 | |
3979 | /* Maybe we should run the scroll functions in Elisp (which already | |
3980 | runs the configuration change hook). */ | |
3981 | if (! NILP (Vwindow_scroll_functions)) | |
3982 | run_hook_with_args_2 (Qwindow_scroll_functions, new, | |
d3d50620 | 3983 | Fmarker_position (n->start)); |
1a13852e MR |
3984 | /* Return NEW. */ |
3985 | return new; | |
3986 | } | |
3987 | ||
3988 | ||
3989 | DEFUN ("delete-window-internal", Fdelete_window_internal, Sdelete_window_internal, 1, 1, 0, | |
3990 | doc: /* Remove WINDOW from its frame. | |
87e68db4 JB |
3991 | WINDOW defaults to the selected window. Return nil. |
3992 | Signal an error when WINDOW is the only window on its frame. */) | |
1a13852e MR |
3993 | (register Lisp_Object window) |
3994 | { | |
3995 | register Lisp_Object parent, sibling, frame, root; | |
3996 | struct window *w, *p, *s, *r; | |
3997 | struct frame *f; | |
748fa866 | 3998 | bool horflag; |
1a13852e MR |
3999 | int before_sibling = 0; |
4000 | ||
4001 | w = decode_any_window (window); | |
4002 | XSETWINDOW (window, w); | |
d3d50620 DA |
4003 | if (NILP (w->buffer) |
4004 | && NILP (w->hchild) && NILP (w->vchild)) | |
1a13852e MR |
4005 | /* It's a no-op to delete an already deleted window. */ |
4006 | return Qnil; | |
4007 | ||
d3d50620 | 4008 | parent = w->parent; |
1a13852e MR |
4009 | if (NILP (parent)) |
4010 | /* Never delete a minibuffer or frame root window. */ | |
4011 | error ("Attempt to delete minibuffer or sole ordinary window"); | |
d3d50620 | 4012 | else if (NILP (w->prev) && NILP (w->next)) |
1a13852e MR |
4013 | /* Rather bow out here, this case should be handled on the Elisp |
4014 | level. */ | |
4015 | error ("Attempt to delete sole window of parent"); | |
4016 | ||
4017 | p = XWINDOW (parent); | |
d3d50620 | 4018 | horflag = NILP (p->vchild); |
1a13852e MR |
4019 | |
4020 | frame = WINDOW_FRAME (w); | |
4021 | f = XFRAME (frame); | |
4022 | ||
4023 | root = FRAME_ROOT_WINDOW (f); | |
4024 | r = XWINDOW (root); | |
4025 | ||
4026 | /* Unlink WINDOW from window tree. */ | |
d3d50620 | 4027 | if (NILP (w->prev)) |
1a13852e MR |
4028 | /* Get SIBLING below (on the right of) WINDOW. */ |
4029 | { | |
4030 | /* before_sibling 1 means WINDOW is the first child of its | |
4031 | parent and thus before the sibling. */ | |
4032 | before_sibling = 1; | |
d3d50620 | 4033 | sibling = w->next; |
1a13852e | 4034 | s = XWINDOW (sibling); |
e8c17b81 | 4035 | wset_prev (s, Qnil); |
1a13852e | 4036 | if (horflag) |
e8c17b81 | 4037 | wset_hchild (p, sibling); |
1a13852e | 4038 | else |
e8c17b81 | 4039 | wset_vchild (p, sibling); |
1a13852e MR |
4040 | } |
4041 | else | |
4042 | /* Get SIBLING above (on the left of) WINDOW. */ | |
4043 | { | |
d3d50620 | 4044 | sibling = w->prev; |
1a13852e | 4045 | s = XWINDOW (sibling); |
e8c17b81 | 4046 | wset_next (s, w->next); |
d3d50620 | 4047 | if (!NILP (s->next)) |
e8c17b81 | 4048 | wset_prev (XWINDOW (s->next), sibling); |
7ab12479 JB |
4049 | } |
4050 | ||
d615d6d2 | 4051 | if (window_resize_check (r, horflag) |
5f24fa51 DA |
4052 | && (XINT (r->new_total) |
4053 | == (horflag ? r->total_cols : r->total_lines))) | |
562dd5e9 MR |
4054 | /* We can delete WINDOW now. */ |
4055 | { | |
95986d52 | 4056 | |
562dd5e9 | 4057 | /* Block input. */ |
4d7e6e51 | 4058 | block_input (); |
d615d6d2 | 4059 | window_resize_apply (p, horflag); |
0d384044 | 4060 | |
95986d52 CY |
4061 | /* If this window is referred to by the dpyinfo's mouse |
4062 | highlight, invalidate that slot to be safe (Bug#9904). */ | |
4c5501e9 EZ |
4063 | if (!FRAME_INITIAL_P (f)) |
4064 | { | |
4065 | Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f); | |
4066 | ||
4067 | if (EQ (hlinfo->mouse_face_window, window)) | |
4068 | hlinfo->mouse_face_window = Qnil; | |
4069 | } | |
95986d52 | 4070 | |
562dd5e9 MR |
4071 | windows_or_buffers_changed++; |
4072 | Vwindow_list = Qnil; | |
4073 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
0d384044 | 4074 | |
e8c17b81 | 4075 | wset_next (w, Qnil); /* Don't delete w->next too. */ |
562dd5e9 | 4076 | free_window_matrices (w); |
bd99e242 | 4077 | |
d3d50620 | 4078 | if (!NILP (w->vchild)) |
0d384044 | 4079 | { |
d3d50620 | 4080 | delete_all_child_windows (w->vchild); |
e8c17b81 | 4081 | wset_vchild (w, Qnil); |
0d384044 | 4082 | } |
d3d50620 | 4083 | else if (!NILP (w->hchild)) |
bd99e242 | 4084 | { |
d3d50620 | 4085 | delete_all_child_windows (w->hchild); |
e8c17b81 | 4086 | wset_hchild (w, Qnil); |
bd99e242 | 4087 | } |
d3d50620 | 4088 | else if (!NILP (w->buffer)) |
bd99e242 | 4089 | { |
562dd5e9 | 4090 | unshow_buffer (w); |
d3d50620 DA |
4091 | unchain_marker (XMARKER (w->pointm)); |
4092 | unchain_marker (XMARKER (w->start)); | |
e8c17b81 | 4093 | wset_buffer (w, Qnil); |
bd99e242 RS |
4094 | } |
4095 | ||
d3d50620 | 4096 | if (NILP (s->prev) && NILP (s->next)) |
562dd5e9 MR |
4097 | /* A matrjoshka where SIBLING has become the only child of |
4098 | PARENT. */ | |
c32de52a | 4099 | { |
562dd5e9 MR |
4100 | /* Put SIBLING into PARENT's place. */ |
4101 | replace_window (parent, sibling, 0); | |
4102 | /* Have SIBLING inherit the following three slot values from | |
b6f67890 | 4103 | PARENT (the combination_limit slot is not inherited). */ |
e8c17b81 PE |
4104 | wset_normal_cols (s, p->normal_cols); |
4105 | wset_normal_lines (s, p->normal_lines); | |
562dd5e9 | 4106 | /* Mark PARENT as deleted. */ |
e8c17b81 PE |
4107 | wset_vchild (p, Qnil); |
4108 | wset_hchild (p, Qnil); | |
562dd5e9 MR |
4109 | /* Try to merge SIBLING into its new parent. */ |
4110 | recombine_windows (sibling); | |
c32de52a RS |
4111 | } |
4112 | ||
562dd5e9 MR |
4113 | adjust_glyphs (f); |
4114 | ||
4115 | if (!WINDOW_LIVE_P (FRAME_SELECTED_WINDOW (f))) | |
4116 | /* We deleted the frame's selected window. */ | |
0d384044 | 4117 | { |
562dd5e9 MR |
4118 | /* Use the frame's first window as fallback ... */ |
4119 | Lisp_Object new_selected_window = Fframe_first_window (frame); | |
4120 | /* ... but preferably use its most recently used window. */ | |
4121 | Lisp_Object mru_window; | |
0d384044 | 4122 | |
562dd5e9 MR |
4123 | /* `get-mru-window' might fail for some reason so play it safe |
4124 | - promote the first window _without recording it_ first. */ | |
4125 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
4126 | Fselect_window (new_selected_window, Qt); | |
4127 | else | |
f00af5b1 | 4128 | fset_selected_window (f, new_selected_window); |
0d384044 | 4129 | |
4d7e6e51 | 4130 | unblock_input (); |
0d384044 | 4131 | |
562dd5e9 MR |
4132 | /* Now look whether `get-mru-window' gets us something. */ |
4133 | mru_window = call1 (Qget_mru_window, frame); | |
4134 | if (WINDOW_LIVE_P (mru_window) | |
d3d50620 | 4135 | && EQ (XWINDOW (mru_window)->frame, frame)) |
562dd5e9 | 4136 | new_selected_window = mru_window; |
bd99e242 | 4137 | |
562dd5e9 MR |
4138 | /* If all ended up well, we now promote the mru window. */ |
4139 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) | |
4140 | Fselect_window (new_selected_window, Qnil); | |
4141 | else | |
f00af5b1 | 4142 | fset_selected_window (f, new_selected_window); |
0d384044 RS |
4143 | } |
4144 | else | |
4d7e6e51 | 4145 | unblock_input (); |
0d384044 | 4146 | |
562dd5e9 MR |
4147 | /* Must be run by the caller: |
4148 | run_window_configuration_change_hook (f); */ | |
0d384044 | 4149 | } |
562dd5e9 MR |
4150 | else |
4151 | /* We failed: Relink WINDOW into window tree. */ | |
0d384044 | 4152 | { |
562dd5e9 MR |
4153 | if (before_sibling) |
4154 | { | |
e8c17b81 | 4155 | wset_prev (s, window); |
562dd5e9 | 4156 | if (horflag) |
e8c17b81 | 4157 | wset_hchild (p, window); |
562dd5e9 | 4158 | else |
e8c17b81 | 4159 | wset_vchild (p, window); |
562dd5e9 MR |
4160 | } |
4161 | else | |
4162 | { | |
e8c17b81 | 4163 | wset_next (s, window); |
d3d50620 | 4164 | if (!NILP (w->next)) |
e8c17b81 | 4165 | wset_prev (XWINDOW (w->next), window); |
562dd5e9 MR |
4166 | } |
4167 | error ("Deletion failed"); | |
0d384044 RS |
4168 | } |
4169 | ||
0d384044 RS |
4170 | return Qnil; |
4171 | } | |
f984d4fc GM |
4172 | \f |
4173 | /*********************************************************************** | |
4174 | Resizing Mini-Windows | |
4175 | ***********************************************************************/ | |
4176 | ||
562dd5e9 MR |
4177 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we |
4178 | can. */ | |
4179 | void | |
4180 | grow_mini_window (struct window *w, int delta) | |
f984d4fc | 4181 | { |
d3d50620 | 4182 | struct frame *f = XFRAME (w->frame); |
562dd5e9 MR |
4183 | struct window *r; |
4184 | Lisp_Object root, value; | |
f984d4fc | 4185 | |
a54e2c05 DA |
4186 | eassert (MINI_WINDOW_P (w)); |
4187 | eassert (delta >= 0); | |
f984d4fc | 4188 | |
562dd5e9 MR |
4189 | root = FRAME_ROOT_WINDOW (f); |
4190 | r = XWINDOW (root); | |
5386012d MR |
4191 | value = call2 (Qwindow_resize_root_window_vertically, |
4192 | root, make_number (- delta)); | |
d615d6d2 | 4193 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4194 | { |
4d7e6e51 | 4195 | block_input (); |
d615d6d2 | 4196 | window_resize_apply (r, 0); |
f984d4fc | 4197 | |
562dd5e9 | 4198 | /* Grow the mini-window. */ |
5f24fa51 DA |
4199 | w->top_line = r->top_line + r->total_lines; |
4200 | w->total_lines -= XINT (value); | |
80b00b08 DA |
4201 | w->last_modified = 0; |
4202 | w->last_overlay_modified = 0; | |
f984d4fc | 4203 | |
dca778d5 | 4204 | windows_or_buffers_changed++; |
562dd5e9 | 4205 | adjust_glyphs (f); |
4d7e6e51 | 4206 | unblock_input (); |
f984d4fc GM |
4207 | } |
4208 | } | |
4209 | ||
4210 | ||
562dd5e9 MR |
4211 | /* Shrink mini-window W. */ |
4212 | void | |
4213 | shrink_mini_window (struct window *w) | |
f984d4fc | 4214 | { |
d3d50620 | 4215 | struct frame *f = XFRAME (w->frame); |
562dd5e9 MR |
4216 | struct window *r; |
4217 | Lisp_Object root, value; | |
4218 | EMACS_INT size; | |
43b4a21f | 4219 | |
a54e2c05 | 4220 | eassert (MINI_WINDOW_P (w)); |
177c0ea7 | 4221 | |
5f24fa51 | 4222 | size = w->total_lines; |
562dd5e9 MR |
4223 | if (size > 1) |
4224 | { | |
4225 | root = FRAME_ROOT_WINDOW (f); | |
4226 | r = XWINDOW (root); | |
5386012d | 4227 | value = call2 (Qwindow_resize_root_window_vertically, |
562dd5e9 | 4228 | root, make_number (size - 1)); |
d615d6d2 | 4229 | if (INTEGERP (value) && window_resize_check (r, 0)) |
f984d4fc | 4230 | { |
4d7e6e51 | 4231 | block_input (); |
d615d6d2 | 4232 | window_resize_apply (r, 0); |
43b4a21f | 4233 | |
562dd5e9 | 4234 | /* Shrink the mini-window. */ |
5f24fa51 DA |
4235 | w->top_line = r->top_line + r->total_lines; |
4236 | w->total_lines = 1; | |
43b4a21f | 4237 | |
80b00b08 DA |
4238 | w->last_modified = 0; |
4239 | w->last_overlay_modified = 0; | |
43b4a21f | 4240 | |
dca778d5 | 4241 | windows_or_buffers_changed++; |
562dd5e9 | 4242 | adjust_glyphs (f); |
4d7e6e51 | 4243 | unblock_input (); |
f984d4fc | 4244 | } |
562dd5e9 MR |
4245 | /* If the above failed for whatever strange reason we must make a |
4246 | one window frame here. The same routine will be needed when | |
4247 | shrinking the frame (and probably when making the initial | |
4248 | *scratch* window). For the moment leave things as they are. */ | |
f984d4fc GM |
4249 | } |
4250 | } | |
4251 | ||
562dd5e9 MR |
4252 | DEFUN ("resize-mini-window-internal", Fresize_mini_window_internal, Sresize_mini_window_internal, 1, 1, 0, |
4253 | doc: /* Resize minibuffer window WINDOW. */) | |
4254 | (Lisp_Object window) | |
f984d4fc | 4255 | { |
562dd5e9 MR |
4256 | struct window *w = XWINDOW (window); |
4257 | struct window *r; | |
4258 | struct frame *f; | |
4259 | int height; | |
177c0ea7 | 4260 | |
562dd5e9 | 4261 | CHECK_WINDOW (window); |
d3d50620 | 4262 | f = XFRAME (w->frame); |
177c0ea7 | 4263 | |
d3d50620 | 4264 | if (!EQ (FRAME_MINIBUF_WINDOW (XFRAME (w->frame)), window)) |
562dd5e9 MR |
4265 | error ("Not a valid minibuffer window"); |
4266 | else if (FRAME_MINIBUF_ONLY_P (f)) | |
4267 | error ("Cannot resize a minibuffer-only frame"); | |
177c0ea7 | 4268 | |
562dd5e9 | 4269 | r = XWINDOW (FRAME_ROOT_WINDOW (f)); |
5f24fa51 | 4270 | height = r->total_lines + w->total_lines; |
d615d6d2 | 4271 | if (window_resize_check (r, 0) |
d3d50620 DA |
4272 | && XINT (w->new_total) > 0 |
4273 | && height == XINT (r->new_total) + XINT (w->new_total)) | |
f984d4fc | 4274 | { |
4d7e6e51 | 4275 | block_input (); |
d615d6d2 | 4276 | window_resize_apply (r, 0); |
f984d4fc | 4277 | |
5f24fa51 DA |
4278 | w->total_lines = XFASTINT (w->new_total); |
4279 | w->top_line = r->top_line + r->total_lines; | |
177c0ea7 | 4280 | |
562dd5e9 MR |
4281 | windows_or_buffers_changed++; |
4282 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
f984d4fc | 4283 | adjust_glyphs (f); |
4d7e6e51 | 4284 | unblock_input (); |
f984d4fc | 4285 | |
562dd5e9 MR |
4286 | run_window_configuration_change_hook (f); |
4287 | return Qt; | |
86c8e823 | 4288 | } |
562dd5e9 | 4289 | else error ("Failed to resize minibuffer window"); |
f984d4fc | 4290 | } |
562dd5e9 | 4291 | \f |
5500c422 GM |
4292 | /* Mark window cursors off for all windows in the window tree rooted |
4293 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4294 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4295 | the frame are cleared. */ | |
4296 | ||
4297 | void | |
971de7fb | 4298 | mark_window_cursors_off (struct window *w) |
5500c422 GM |
4299 | { |
4300 | while (w) | |
4301 | { | |
d3d50620 DA |
4302 | if (!NILP (w->hchild)) |
4303 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4304 | else if (!NILP (w->vchild)) | |
4305 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
5500c422 GM |
4306 | else |
4307 | w->phys_cursor_on_p = 0; | |
4308 | ||
d3d50620 | 4309 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
5500c422 GM |
4310 | } |
4311 | } | |
4312 | ||
4313 | ||
e9c195b1 | 4314 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4315 | |
4316 | int | |
971de7fb | 4317 | window_internal_height (struct window *w) |
7ab12479 | 4318 | { |
5f24fa51 | 4319 | int ht = w->total_lines; |
7ab12479 | 4320 | |
e9c195b1 GM |
4321 | if (!MINI_WINDOW_P (w)) |
4322 | { | |
d3d50620 DA |
4323 | if (!NILP (w->parent) |
4324 | || !NILP (w->vchild) | |
4325 | || !NILP (w->hchild) | |
4326 | || !NILP (w->next) | |
4327 | || !NILP (w->prev) | |
e9c195b1 GM |
4328 | || WINDOW_WANTS_MODELINE_P (w)) |
4329 | --ht; | |
7ab12479 | 4330 | |
e9c195b1 GM |
4331 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4332 | --ht; | |
4333 | } | |
7ab12479 JB |
4334 | |
4335 | return ht; | |
4336 | } | |
5500c422 GM |
4337 | \f |
4338 | /************************************************************************ | |
4339 | Window Scrolling | |
4340 | ***********************************************************************/ | |
535e0b8e | 4341 | |
5500c422 | 4342 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4343 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4344 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4345 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4346 | means don't signal an error if we try to move over BEGV or ZV, | |
4347 | respectively. */ | |
7ab12479 | 4348 | |
101d1605 | 4349 | static void |
d311d28c | 4350 | window_scroll (Lisp_Object window, EMACS_INT n, int whole, int noerror) |
5500c422 | 4351 | { |
cba59f77 | 4352 | immediate_quit = 1; |
d311d28c | 4353 | n = clip_to_bounds (INT_MIN, n, INT_MAX); |
cba59f77 | 4354 | |
5500c422 GM |
4355 | /* If we must, use the pixel-based version which is much slower than |
4356 | the line-based one but can handle varying line heights. */ | |
d3d50620 | 4357 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) |
5500c422 GM |
4358 | window_scroll_pixel_based (window, n, whole, noerror); |
4359 | else | |
4360 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4361 | |
4362 | immediate_quit = 0; | |
5500c422 GM |
4363 | } |
4364 | ||
4365 | ||
4366 | /* Implementation of window_scroll that works based on pixel line | |
4367 | heights. See the comment of window_scroll for parameter | |
4368 | descriptions. */ | |
4369 | ||
4370 | static void | |
971de7fb | 4371 | window_scroll_pixel_based (Lisp_Object window, int n, int whole, int noerror) |
5500c422 GM |
4372 | { |
4373 | struct it it; | |
4374 | struct window *w = XWINDOW (window); | |
4375 | struct text_pos start; | |
5500c422 | 4376 | int this_scroll_margin; |
9d14503e | 4377 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5cdb3cf3 | 4378 | int vscrolled = 0; |
5a857365 | 4379 | int x, y, rtop, rbot, rowh, vpos; |
57b3e30b | 4380 | void *itdata = NULL; |
5500c422 | 4381 | |
d3d50620 | 4382 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
f0ee99a0 EZ |
4383 | /* Scrolling a minibuffer window via scroll bar when the echo area |
4384 | shows long text sometimes resets the minibuffer contents behind | |
4385 | our backs. */ | |
4386 | if (CHARPOS (start) > ZV) | |
4387 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
177c0ea7 | 4388 | |
5500c422 | 4389 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4390 | the screen. Allow PT to be partially visible, otherwise |
4391 | something like (scroll-down 1) with PT in the line before | |
4392 | the partially visible one would recenter. */ | |
5a857365 KS |
4393 | |
4394 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 | 4395 | { |
57b3e30b | 4396 | itdata = bidi_shelve_cache (); |
5500c422 GM |
4397 | /* Move backward half the height of the window. Performance note: |
4398 | vmotion used here is about 10% faster, but would give wrong | |
4399 | results for variable height lines. */ | |
4400 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4401 | it.current_y = it.last_visible_y; | |
f204989e | 4402 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4403 | |
5500c422 GM |
4404 | /* The function move_iterator_vertically may move over more than |
4405 | the specified y-distance. If it->w is small, e.g. a | |
4406 | mini-buffer window, we may end up in front of the window's | |
4407 | display area. This is the case when Start displaying at the | |
4408 | start of the line containing PT in this case. */ | |
4409 | if (it.current_y <= 0) | |
4410 | { | |
4411 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4412 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4413 | it.current_y = 0; |
4414 | } | |
4415 | ||
4416 | start = it.current.pos; | |
35928349 | 4417 | bidi_unshelve_cache (itdata, 0); |
5500c422 | 4418 | } |
e56263e5 KS |
4419 | else if (auto_window_vscroll_p) |
4420 | { | |
5a857365 | 4421 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
4422 | { |
4423 | int px; | |
4424 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4425 | if (whole) | |
e856c216 KS |
4426 | dy = max ((window_box_height (w) |
4427 | - next_screen_context_lines * dy), | |
4428 | dy); | |
e56263e5 KS |
4429 | dy *= n; |
4430 | ||
5a857365 | 4431 | if (n < 0) |
e56263e5 | 4432 | { |
5a857365 KS |
4433 | /* Only vscroll backwards if already vscrolled forwards. */ |
4434 | if (w->vscroll < 0 && rtop > 0) | |
4435 | { | |
4436 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
4437 | Fset_window_vscroll (window, make_number (px), Qt); | |
4438 | return; | |
4439 | } | |
e56263e5 | 4440 | } |
5a857365 | 4441 | if (n > 0) |
e56263e5 | 4442 | { |
5a857365 KS |
4443 | /* Do vscroll if already vscrolled or only display line. */ |
4444 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
4445 | { | |
4446 | px = max (0, -w->vscroll + min (rbot, dy)); | |
4447 | Fset_window_vscroll (window, make_number (px), Qt); | |
4448 | return; | |
4449 | } | |
4450 | ||
4451 | /* Maybe modify window start instead of scrolling. */ | |
4452 | if (rbot > 0 || w->vscroll < 0) | |
4453 | { | |
d311d28c | 4454 | ptrdiff_t spos; |
5a857365 KS |
4455 | |
4456 | Fset_window_vscroll (window, make_number (0), Qt); | |
4457 | /* If there are other text lines above the current row, | |
4458 | move window start to current row. Else to next row. */ | |
4459 | if (rbot > 0) | |
4460 | spos = XINT (Fline_beginning_position (Qnil)); | |
4461 | else | |
4462 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
d3d50620 DA |
4463 | set_marker_restricted (w->start, make_number (spos), |
4464 | w->buffer); | |
c98ff5dd DA |
4465 | w->start_at_line_beg = 1; |
4466 | w->update_mode_line = 1; | |
80b00b08 DA |
4467 | w->last_modified = 0; |
4468 | w->last_overlay_modified = 0; | |
5a857365 KS |
4469 | /* Set force_start so that redisplay_window will run the |
4470 | window-scroll-functions. */ | |
c98ff5dd | 4471 | w->force_start = 1; |
5a857365 KS |
4472 | return; |
4473 | } | |
e56263e5 KS |
4474 | } |
4475 | } | |
5a857365 | 4476 | /* Cancel previous vscroll. */ |
e56263e5 KS |
4477 | Fset_window_vscroll (window, make_number (0), Qt); |
4478 | } | |
5500c422 | 4479 | |
57b3e30b | 4480 | itdata = bidi_shelve_cache (); |
d0c38d63 | 4481 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
4482 | point in the same window line as it is now, so get that line. */ |
4483 | if (!NILP (Vscroll_preserve_screen_position)) | |
4484 | { | |
c525d842 | 4485 | /* We preserve the goal pixel coordinate across consecutive |
a4b000fb JL |
4486 | calls to scroll-up, scroll-down and other commands that |
4487 | have the `scroll-command' property. This avoids the | |
c525d842 CY |
4488 | possibility of point becoming "stuck" on a tall line when |
4489 | scrolling by one line. */ | |
66fe93d1 | 4490 | if (window_scroll_pixel_based_preserve_y < 0 |
1344aad4 TT |
4491 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4492 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c525d842 CY |
4493 | { |
4494 | start_display (&it, w, start); | |
4495 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 4496 | window_scroll_pixel_based_preserve_y = it.current_y; |
c876b227 | 4497 | window_scroll_pixel_based_preserve_x = it.current_x; |
c525d842 | 4498 | } |
5500c422 GM |
4499 | } |
4500 | else | |
c876b227 SM |
4501 | window_scroll_pixel_based_preserve_y |
4502 | = window_scroll_pixel_based_preserve_x = -1; | |
5500c422 GM |
4503 | |
4504 | /* Move iterator it from start the specified distance forward or | |
4505 | backward. The result is the new window start. */ | |
4506 | start_display (&it, w, start); | |
4507 | if (whole) | |
4508 | { | |
d311d28c | 4509 | ptrdiff_t start_pos = IT_CHARPOS (it); |
e856c216 KS |
4510 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); |
4511 | dy = max ((window_box_height (w) | |
4512 | - next_screen_context_lines * dy), | |
4513 | dy) * n; | |
d72340d4 GM |
4514 | |
4515 | /* Note that move_it_vertically always moves the iterator to the | |
4516 | start of a line. So, if the last line doesn't have a newline, | |
4517 | we would end up at the start of the line ending at ZV. */ | |
4518 | if (dy <= 0) | |
e856c216 KS |
4519 | { |
4520 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 4521 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
4522 | looking at an image that is taller that the window height. */ |
4523 | while (start_pos == IT_CHARPOS (it) | |
4524 | && start_pos > BEGV) | |
e4cc2dfc | 4525 | move_it_by_lines (&it, -1); |
e856c216 | 4526 | } |
d72340d4 | 4527 | else if (dy > 0) |
bed83ee4 | 4528 | { |
bed83ee4 KS |
4529 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
4530 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 4531 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
4532 | looking at an image that is taller that the window height. */ |
4533 | while (start_pos == IT_CHARPOS (it) | |
4534 | && start_pos < ZV) | |
e4cc2dfc | 4535 | move_it_by_lines (&it, 1); |
bed83ee4 | 4536 | } |
5500c422 GM |
4537 | } |
4538 | else | |
e4cc2dfc | 4539 | move_it_by_lines (&it, n); |
5500c422 | 4540 | |
96ae58c8 RS |
4541 | /* We failed if we find ZV is already on the screen (scrolling up, |
4542 | means there's nothing past the end), or if we can't start any | |
4543 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 4544 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 4545 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 4546 | { |
5cdb3cf3 MB |
4547 | if (IT_CHARPOS (it) == ZV) |
4548 | { | |
07ce8b53 RS |
4549 | if (it.current_y < it.last_visible_y |
4550 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 4551 | > it.last_visible_y)) |
a74eca50 GM |
4552 | { |
4553 | /* The last line was only partially visible, make it fully | |
4554 | visible. */ | |
4555 | w->vscroll = (it.last_visible_y | |
4556 | - it.current_y + it.max_ascent + it.max_descent); | |
4557 | adjust_glyphs (it.f); | |
4558 | } | |
5cdb3cf3 | 4559 | else |
57b3e30b | 4560 | { |
35928349 | 4561 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
4562 | if (noerror) |
4563 | return; | |
4564 | else if (n < 0) /* could happen with empty buffers */ | |
4565 | xsignal0 (Qbeginning_of_buffer); | |
4566 | else | |
4567 | xsignal0 (Qend_of_buffer); | |
4568 | } | |
5cdb3cf3 | 4569 | } |
5500c422 | 4570 | else |
5cdb3cf3 MB |
4571 | { |
4572 | if (w->vscroll != 0) | |
4573 | /* The first line was only partially visible, make it fully | |
4574 | visible. */ | |
4575 | w->vscroll = 0; | |
5cdb3cf3 | 4576 | else |
57b3e30b | 4577 | { |
35928349 | 4578 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
4579 | if (noerror) |
4580 | return; | |
4581 | else | |
4582 | xsignal0 (Qbeginning_of_buffer); | |
4583 | } | |
5cdb3cf3 MB |
4584 | } |
4585 | ||
4586 | /* If control gets here, then we vscrolled. */ | |
4587 | ||
d3d50620 | 4588 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
5cdb3cf3 MB |
4589 | |
4590 | /* Don't try to change the window start below. */ | |
4591 | vscrolled = 1; | |
5500c422 GM |
4592 | } |
4593 | ||
5cdb3cf3 MB |
4594 | if (! vscrolled) |
4595 | { | |
d311d28c PE |
4596 | ptrdiff_t pos = IT_CHARPOS (it); |
4597 | ptrdiff_t bytepos; | |
e68def1e AS |
4598 | |
4599 | /* If in the middle of a multi-glyph character move forward to | |
4600 | the next character. */ | |
4601 | if (in_display_vector_p (&it)) | |
4602 | { | |
4603 | ++pos; | |
4604 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
4605 | } | |
4606 | ||
5cdb3cf3 | 4607 | /* Set the window start, and set up the window for redisplay. */ |
f74de345 DA |
4608 | set_marker_restricted_both (w->start, w->buffer, IT_CHARPOS (it), |
4609 | IT_BYTEPOS (it)); | |
4c1acb95 | 4610 | bytepos = marker_byte_position (w->start); |
c98ff5dd DA |
4611 | w->start_at_line_beg = (pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n'); |
4612 | w->update_mode_line = 1; | |
80b00b08 DA |
4613 | w->last_modified = 0; |
4614 | w->last_overlay_modified = 0; | |
5cdb3cf3 MB |
4615 | /* Set force_start so that redisplay_window will run the |
4616 | window-scroll-functions. */ | |
c98ff5dd | 4617 | w->force_start = 1; |
5cdb3cf3 | 4618 | } |
177c0ea7 | 4619 | |
dc297565 RS |
4620 | /* The rest of this function uses current_y in a nonstandard way, |
4621 | not including the height of the header line if any. */ | |
5500c422 | 4622 | it.current_y = it.vpos = 0; |
177c0ea7 | 4623 | |
940f53e5 RS |
4624 | /* Move PT out of scroll margins. |
4625 | This code wants current_y to be zero at the window start position | |
4626 | even if there is a header line. */ | |
4627 | this_scroll_margin = max (0, scroll_margin); | |
3a45383a | 4628 | this_scroll_margin |
5f24fa51 | 4629 | = min (this_scroll_margin, w->total_lines / 4); |
940f53e5 RS |
4630 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); |
4631 | ||
4632 | if (n > 0) | |
5500c422 | 4633 | { |
940f53e5 RS |
4634 | /* We moved the window start towards ZV, so PT may be now |
4635 | in the scroll margin at the top. */ | |
4636 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
4637 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
4638 | && (NILP (Vscroll_preserve_screen_position) | |
4639 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4640 | /* We found PT at a legitimate height. Leave it alone. */ |
4641 | ; | |
66fe93d1 | 4642 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4643 | { |
fa3c3426 RS |
4644 | /* If we have a header line, take account of it. |
4645 | This is necessary because we set it.current_y to 0, above. */ | |
c876b227 SM |
4646 | move_it_to (&it, -1, |
4647 | window_scroll_pixel_based_preserve_x, | |
66fe93d1 LT |
4648 | window_scroll_pixel_based_preserve_y |
4649 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c876b227 | 4650 | -1, MOVE_TO_Y | MOVE_TO_X); |
940f53e5 RS |
4651 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4652 | } | |
4653 | else | |
5500c422 | 4654 | { |
5500c422 | 4655 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
4656 | { |
4657 | int prev = it.current_y; | |
e4cc2dfc | 4658 | move_it_by_lines (&it, 1); |
e9b2c961 RS |
4659 | if (prev == it.current_y) |
4660 | break; | |
4661 | } | |
5500c422 GM |
4662 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4663 | } | |
940f53e5 RS |
4664 | } |
4665 | else if (n < 0) | |
4666 | { | |
d311d28c | 4667 | ptrdiff_t charpos, bytepos; |
aed328bf | 4668 | int partial_p; |
940f53e5 | 4669 | |
66fe93d1 LT |
4670 | /* Save our position, for the |
4671 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
4672 | charpos = IT_CHARPOS (it); |
4673 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 4674 | |
940f53e5 RS |
4675 | /* We moved the window start towards BEGV, so PT may be now |
4676 | in the scroll margin at the bottom. */ | |
4677 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
4678 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
4679 | - this_scroll_margin - 1), | |
4680 | -1, | |
940f53e5 RS |
4681 | MOVE_TO_POS | MOVE_TO_Y); |
4682 | ||
aed328bf KS |
4683 | /* Save our position, in case it's correct. */ |
4684 | charpos = IT_CHARPOS (it); | |
4685 | bytepos = IT_BYTEPOS (it); | |
4686 | ||
4687 | /* See if point is on a partially visible line at the end. */ | |
4688 | if (it.what == IT_EOB) | |
4689 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
4690 | else | |
4691 | { | |
e4cc2dfc | 4692 | move_it_by_lines (&it, 1); |
aed328bf KS |
4693 | partial_p = it.current_y > it.last_visible_y; |
4694 | } | |
4695 | ||
bdf4ec93 RS |
4696 | if (charpos == PT && !partial_p |
4697 | && (NILP (Vscroll_preserve_screen_position) | |
4698 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
4699 | /* We found PT before we found the display margin, so PT is ok. */ |
4700 | ; | |
66fe93d1 | 4701 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 4702 | { |
d3d50620 | 4703 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
940f53e5 | 4704 | start_display (&it, w, start); |
c525d842 CY |
4705 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
4706 | here because we called start_display again and did not | |
4707 | alter it.current_y this time. */ | |
c876b227 SM |
4708 | move_it_to (&it, -1, window_scroll_pixel_based_preserve_x, |
4709 | window_scroll_pixel_based_preserve_y, -1, | |
4710 | MOVE_TO_Y | MOVE_TO_X); | |
940f53e5 RS |
4711 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4712 | } | |
4713 | else | |
4714 | { | |
aed328bf | 4715 | if (partial_p) |
5cdb3cf3 MB |
4716 | /* The last line was only partially visible, so back up two |
4717 | lines to make sure we're on a fully visible line. */ | |
4718 | { | |
e4cc2dfc | 4719 | move_it_by_lines (&it, -2); |
5cdb3cf3 MB |
4720 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
4721 | } | |
4722 | else | |
4723 | /* No, the position we saved is OK, so use it. */ | |
4724 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
4725 | } |
4726 | } | |
35928349 | 4727 | bidi_unshelve_cache (itdata, 0); |
5500c422 GM |
4728 | } |
4729 | ||
4730 | ||
4731 | /* Implementation of window_scroll that works based on screen lines. | |
4732 | See the comment of window_scroll for parameter descriptions. */ | |
4733 | ||
4734 | static void | |
971de7fb | 4735 | window_scroll_line_based (Lisp_Object window, int n, int whole, int noerror) |
7ab12479 JB |
4736 | { |
4737 | register struct window *w = XWINDOW (window); | |
03ab8921 EZ |
4738 | /* Fvertical_motion enters redisplay, which can trigger |
4739 | fontification, which in turn can modify buffer text (e.g., if the | |
4740 | fontification functions replace escape sequences with faces, as | |
4741 | in `grep-mode-font-lock-keywords'). So we use a marker to record | |
4742 | the old point position, to prevent crashes in SET_PT_BOTH. */ | |
4743 | Lisp_Object opoint_marker = Fpoint_marker (); | |
d311d28c | 4744 | register ptrdiff_t pos, pos_byte; |
7ab12479 JB |
4745 | register int ht = window_internal_height (w); |
4746 | register Lisp_Object tem; | |
4747 | int lose; | |
5500c422 | 4748 | Lisp_Object bolp; |
c54aa166 DA |
4749 | ptrdiff_t startpos = marker_position (w->start); |
4750 | ptrdiff_t startbyte = marker_byte_position (w->start); | |
c876b227 | 4751 | Lisp_Object original_pos = Qnil; |
101d1605 | 4752 | |
d4e7cf01 GM |
4753 | /* If scrolling screen-fulls, compute the number of lines to |
4754 | scroll from the window's height. */ | |
4755 | if (whole) | |
4756 | n *= max (1, ht - next_screen_context_lines); | |
4757 | ||
c876b227 SM |
4758 | if (!NILP (Vscroll_preserve_screen_position)) |
4759 | { | |
4760 | if (window_scroll_preserve_vpos <= 0 | |
1344aad4 TT |
4761 | || !SYMBOLP (KVAR (current_kboard, Vlast_command)) |
4762 | || NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command))) | |
c876b227 SM |
4763 | { |
4764 | struct position posit | |
c54aa166 DA |
4765 | = *compute_motion (startpos, startbyte, 0, 0, 0, |
4766 | PT, ht, 0, -1, w->hscroll, 0, w); | |
c876b227 | 4767 | window_scroll_preserve_vpos = posit.vpos; |
80b00b08 | 4768 | window_scroll_preserve_hpos = posit.hpos + w->hscroll; |
c876b227 SM |
4769 | } |
4770 | ||
4771 | original_pos = Fcons (make_number (window_scroll_preserve_hpos), | |
4772 | make_number (window_scroll_preserve_vpos)); | |
4773 | } | |
0a1f771a | 4774 | |
d834a2e9 | 4775 | XSETFASTINT (tem, PT); |
6ffdb539 | 4776 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 4777 | |
265a9e55 | 4778 | if (NILP (tem)) |
7ab12479 | 4779 | { |
cd2be1dd | 4780 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 4781 | startpos = PT; |
c54aa166 | 4782 | startbyte = PT_BYTE; |
7ab12479 JB |
4783 | } |
4784 | ||
c54aa166 | 4785 | SET_PT_BOTH (startpos, startbyte); |
5ce7b543 | 4786 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 4787 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 4788 | pos = PT; |
b73ea88e | 4789 | pos_byte = PT_BYTE; |
7ab12479 | 4790 | bolp = Fbolp (); |
03ab8921 EZ |
4791 | SET_PT_BOTH (marker_position (opoint_marker), |
4792 | marker_byte_position (opoint_marker)); | |
7ab12479 JB |
4793 | |
4794 | if (lose) | |
f8026fd8 JB |
4795 | { |
4796 | if (noerror) | |
4797 | return; | |
4798 | else | |
ba96a5cf | 4799 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 4800 | } |
7ab12479 JB |
4801 | |
4802 | if (pos < ZV) | |
7ab12479 | 4803 | { |
0c7da84e | 4804 | /* Don't use a scroll margin that is negative or too large. */ |
71f02bc5 | 4805 | int this_scroll_margin = |
5f24fa51 | 4806 | max (0, min (scroll_margin, w->total_lines / 4)); |
0c7da84e | 4807 | |
d3d50620 | 4808 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
c98ff5dd DA |
4809 | w->start_at_line_beg = !NILP (bolp); |
4810 | w->update_mode_line = 1; | |
80b00b08 DA |
4811 | w->last_modified = 0; |
4812 | w->last_overlay_modified = 0; | |
345d45b2 RS |
4813 | /* Set force_start so that redisplay_window will run |
4814 | the window-scroll-functions. */ | |
c98ff5dd | 4815 | w->force_start = 1; |
0c7da84e | 4816 | |
bdf4ec93 RS |
4817 | if (!NILP (Vscroll_preserve_screen_position) |
4818 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 4819 | { |
b73ea88e | 4820 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4821 | Fvertical_motion (original_pos, window); |
0c7da84e | 4822 | } |
101d1605 RS |
4823 | /* If we scrolled forward, put point enough lines down |
4824 | that it is outside the scroll margin. */ | |
4825 | else if (n > 0) | |
0c7da84e | 4826 | { |
101d1605 RS |
4827 | int top_margin; |
4828 | ||
4829 | if (this_scroll_margin > 0) | |
4830 | { | |
b73ea88e | 4831 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
4832 | Fvertical_motion (make_number (this_scroll_margin), window); |
4833 | top_margin = PT; | |
4834 | } | |
4835 | else | |
4836 | top_margin = pos; | |
4837 | ||
03ab8921 EZ |
4838 | if (top_margin <= marker_position (opoint_marker)) |
4839 | SET_PT_BOTH (marker_position (opoint_marker), | |
4840 | marker_byte_position (opoint_marker)); | |
5500c422 | 4841 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 4842 | { |
b73ea88e | 4843 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4844 | Fvertical_motion (original_pos, window); |
101d1605 | 4845 | } |
9317a85d | 4846 | else |
335406fc | 4847 | SET_PT (top_margin); |
0c7da84e | 4848 | } |
101d1605 | 4849 | else if (n < 0) |
7ab12479 | 4850 | { |
101d1605 RS |
4851 | int bottom_margin; |
4852 | ||
0c7da84e RS |
4853 | /* If we scrolled backward, put point near the end of the window |
4854 | but not within the scroll margin. */ | |
b73ea88e | 4855 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 4856 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
4857 | if (XFASTINT (tem) == ht - this_scroll_margin) |
4858 | bottom_margin = PT; | |
4859 | else | |
4860 | bottom_margin = PT + 1; | |
4861 | ||
03ab8921 EZ |
4862 | if (bottom_margin > marker_position (opoint_marker)) |
4863 | SET_PT_BOTH (marker_position (opoint_marker), | |
4864 | marker_byte_position (opoint_marker)); | |
7ab12479 | 4865 | else |
101d1605 | 4866 | { |
5500c422 | 4867 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 4868 | { |
b73ea88e | 4869 | SET_PT_BOTH (pos, pos_byte); |
c876b227 | 4870 | Fvertical_motion (original_pos, window); |
9317a85d RS |
4871 | } |
4872 | else | |
4873 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 4874 | } |
7ab12479 JB |
4875 | } |
4876 | } | |
4877 | else | |
f8026fd8 JB |
4878 | { |
4879 | if (noerror) | |
4880 | return; | |
4881 | else | |
ba96a5cf | 4882 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 4883 | } |
7ab12479 | 4884 | } |
5500c422 GM |
4885 | |
4886 | ||
4887 | /* Scroll selected_window up or down. If N is nil, scroll a | |
4888 | screen-full which is defined as the height of the window minus | |
4889 | next_screen_context_lines. If N is the symbol `-', scroll. | |
4890 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
4891 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
4892 | |
4893 | static void | |
971de7fb | 4894 | scroll_command (Lisp_Object n, int direction) |
7ab12479 | 4895 | { |
d311d28c | 4896 | ptrdiff_t count = SPECPDL_INDEX (); |
7ab12479 | 4897 | |
a54e2c05 | 4898 | eassert (eabs (direction) == 1); |
5500c422 GM |
4899 | |
4900 | /* If selected window's buffer isn't current, make it current for | |
4901 | the moment. But don't screw up if window_scroll gets an error. */ | |
d3d50620 | 4902 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
4903 | { |
4904 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
d3d50620 | 4905 | Fset_buffer (XWINDOW (selected_window)->buffer); |
5500c422 GM |
4906 | |
4907 | /* Make redisplay consider other windows than just selected_window. */ | |
4908 | ++windows_or_buffers_changed; | |
95605e15 | 4909 | } |
7ab12479 | 4910 | |
265a9e55 | 4911 | if (NILP (n)) |
d4e7cf01 | 4912 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 4913 | else if (EQ (n, Qminus)) |
d4e7cf01 | 4914 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
4915 | else |
4916 | { | |
4917 | n = Fprefix_numeric_value (n); | |
101d1605 | 4918 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 4919 | } |
95605e15 JB |
4920 | |
4921 | unbind_to (count, Qnil); | |
7ab12479 JB |
4922 | } |
4923 | ||
e0965597 | 4924 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
12bb3111 | 4925 | doc: /* Scroll text of selected window upward ARG lines. |
a0a37a6f | 4926 | If ARG is omitted or nil, scroll upward by a near full screen. |
fdb82f93 PJ |
4927 | A near full screen is `next-screen-context-lines' less than a full screen. |
4928 | Negative ARG means scroll downward. | |
4929 | If ARG is the atom `-', scroll downward by nearly full screen. | |
4930 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4931 | (Lisp_Object arg) |
7ab12479 | 4932 | { |
413430c5 | 4933 | scroll_command (arg, 1); |
7ab12479 JB |
4934 | return Qnil; |
4935 | } | |
4936 | ||
e0965597 | 4937 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
12bb3111 | 4938 | doc: /* Scroll text of selected window down ARG lines. |
a0a37a6f | 4939 | If ARG is omitted or nil, scroll down by a near full screen. |
fdb82f93 PJ |
4940 | A near full screen is `next-screen-context-lines' less than a full screen. |
4941 | Negative ARG means scroll upward. | |
4942 | If ARG is the atom `-', scroll upward by nearly full screen. | |
4943 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5842a27b | 4944 | (Lisp_Object arg) |
7ab12479 | 4945 | { |
413430c5 | 4946 | scroll_command (arg, -1); |
7ab12479 JB |
4947 | return Qnil; |
4948 | } | |
ccd0664b RS |
4949 | \f |
4950 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 4951 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 4952 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
4953 | showing that buffer is used. |
4954 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
4955 | specifies the window. This takes precedence over | |
4956 | `other-window-scroll-buffer'. */) | |
5842a27b | 4957 | (void) |
7ab12479 | 4958 | { |
ccd0664b | 4959 | Lisp_Object window; |
7ab12479 JB |
4960 | |
4961 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 4962 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
4963 | window = Vminibuf_scroll_window; |
4964 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 4965 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
4966 | { |
4967 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 4968 | if (NILP (window)) |
87478b52 | 4969 | window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
4970 | } |
4971 | else | |
dbc4e1c1 JB |
4972 | { |
4973 | /* Nothing specified; look for a neighboring window on the same | |
4974 | frame. */ | |
4975 | window = Fnext_window (selected_window, Qnil, Qnil); | |
4976 | ||
4977 | if (EQ (window, selected_window)) | |
4978 | /* That didn't get us anywhere; look for a window on another | |
4979 | visible frame. */ | |
4980 | do | |
4981 | window = Fnext_window (window, Qnil, Qt); | |
4982 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
4983 | && ! EQ (window, selected_window)); | |
4984 | } | |
4985 | ||
b7826503 | 4986 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
4987 | |
4988 | if (EQ (window, selected_window)) | |
4989 | error ("There is no other window"); | |
4990 | ||
ccd0664b RS |
4991 | return window; |
4992 | } | |
4993 | ||
4994 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
4995 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
4996 | A near full screen is `next-screen-context-lines' less than a full screen. | |
4997 | The next window is the one below the current one; or the one at the top | |
4998 | if the current one is at the bottom. Negative ARG means scroll downward. | |
4999 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5000 | When calling from a program, supply as argument a number, nil, or `-'. | |
5001 | ||
fdb82f93 | 5002 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5003 | showing that buffer, popping the buffer up if necessary. |
5004 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5005 | specifies the window to scroll. This takes precedence over | |
5006 | `other-window-scroll-buffer'. */) | |
5842a27b | 5007 | (Lisp_Object arg) |
ccd0664b | 5008 | { |
d4e7cf01 GM |
5009 | Lisp_Object window; |
5010 | struct window *w; | |
d311d28c | 5011 | ptrdiff_t count = SPECPDL_INDEX (); |
ccd0664b RS |
5012 | |
5013 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5014 | w = XWINDOW (window); |
7ab12479 JB |
5015 | |
5016 | /* Don't screw up if window_scroll gets an error. */ | |
5017 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5018 | ++windows_or_buffers_changed; |
7ab12479 | 5019 | |
d3d50620 | 5020 | Fset_buffer (w->buffer); |
ffcd945e | 5021 | SET_PT_BOTH (marker_position (w->pointm), marker_byte_position (w->pointm)); |
7ab12479 | 5022 | |
413430c5 | 5023 | if (NILP (arg)) |
d4e7cf01 | 5024 | window_scroll (window, 1, 1, 1); |
413430c5 | 5025 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5026 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5027 | else |
5028 | { | |
413430c5 | 5029 | if (CONSP (arg)) |
7d7bbefd | 5030 | arg = XCAR (arg); |
b7826503 | 5031 | CHECK_NUMBER (arg); |
101d1605 | 5032 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5033 | } |
5034 | ||
d3d50620 | 5035 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5036 | unbind_to (count, Qnil); |
7ab12479 JB |
5037 | |
5038 | return Qnil; | |
5039 | } | |
5040 | \f | |
e0965597 | 5041 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 5042 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5043 | Default for ARG is window width minus 2. |
5044 | Value is the total amount of leftward horizontal scrolling in | |
5045 | effect after the change. | |
23fe745a | 5046 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5047 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5048 | will not scroll a window to a column less than the value returned |
dc297565 | 5049 | by this function. This happens in an interactive call. */) |
5842a27b | 5050 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 5051 | { |
c67fa410 | 5052 | struct window *w = XWINDOW (selected_window); |
aa754e6a PE |
5053 | EMACS_INT requested_arg = (NILP (arg) |
5054 | ? window_body_cols (w) - 2 | |
5055 | : XINT (Fprefix_numeric_value (arg))); | |
24a212eb | 5056 | Lisp_Object result = set_window_hscroll (w, w->hscroll + requested_arg); |
c67fa410 | 5057 | |
dc297565 | 5058 | if (!NILP (set_minimum)) |
c67fa410 GM |
5059 | w->min_hscroll = w->hscroll; |
5060 | ||
5061 | return result; | |
7ab12479 JB |
5062 | } |
5063 | ||
e0965597 | 5064 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 5065 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5066 | Default for ARG is window width minus 2. |
5067 | Value is the total amount of leftward horizontal scrolling in | |
5068 | effect after the change. | |
23fe745a | 5069 | If SET-MINIMUM is non-nil, the new scroll amount becomes the |
dc297565 | 5070 | lower bound for automatic scrolling, i.e. automatic scrolling |
2fe41216 | 5071 | will not scroll a window to a column less than the value returned |
dc297565 | 5072 | by this function. This happens in an interactive call. */) |
5842a27b | 5073 | (register Lisp_Object arg, Lisp_Object set_minimum) |
7ab12479 | 5074 | { |
c67fa410 | 5075 | struct window *w = XWINDOW (selected_window); |
aa754e6a PE |
5076 | EMACS_INT requested_arg = (NILP (arg) |
5077 | ? window_body_cols (w) - 2 | |
5078 | : XINT (Fprefix_numeric_value (arg))); | |
24a212eb | 5079 | Lisp_Object result = set_window_hscroll (w, w->hscroll - requested_arg); |
177c0ea7 | 5080 | |
dc297565 | 5081 | if (!NILP (set_minimum)) |
c67fa410 GM |
5082 | w->min_hscroll = w->hscroll; |
5083 | ||
5084 | return result; | |
7ab12479 JB |
5085 | } |
5086 | ||
fa832261 KS |
5087 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5088 | doc: /* Return the window which was selected when entering the minibuffer. | |
12bb3111 | 5089 | Returns nil, if selected window is not a minibuffer window. */) |
5842a27b | 5090 | (void) |
fa832261 KS |
5091 | { |
5092 | if (minibuf_level > 0 | |
5093 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5094 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5095 | return minibuf_selected_window; | |
5096 | ||
5097 | return Qnil; | |
5098 | } | |
5099 | ||
12c8b416 GM |
5100 | /* Value is the number of lines actually displayed in window W, |
5101 | as opposed to its height. */ | |
5102 | ||
5103 | static int | |
971de7fb | 5104 | displayed_window_lines (struct window *w) |
12c8b416 GM |
5105 | { |
5106 | struct it it; | |
5107 | struct text_pos start; | |
4c1acb95 | 5108 | ptrdiff_t charpos = marker_position (w->start); |
12c8b416 GM |
5109 | int height = window_box_height (w); |
5110 | struct buffer *old_buffer; | |
5111 | int bottom_y; | |
57b3e30b | 5112 | void *itdata = NULL; |
12c8b416 | 5113 | |
d3d50620 | 5114 | if (XBUFFER (w->buffer) != current_buffer) |
12c8b416 GM |
5115 | { |
5116 | old_buffer = current_buffer; | |
d3d50620 | 5117 | set_buffer_internal (XBUFFER (w->buffer)); |
12c8b416 GM |
5118 | } |
5119 | else | |
5120 | old_buffer = NULL; | |
5121 | ||
521b203e GM |
5122 | /* In case W->start is out of the accessible range, do something |
5123 | reasonable. This happens in Info mode when Info-scroll-down | |
5124 | calls (recenter -1) while W->start is 1. */ | |
4c1acb95 | 5125 | if (charpos < BEGV) |
521b203e | 5126 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); |
4c1acb95 | 5127 | else if (charpos > ZV) |
521b203e GM |
5128 | SET_TEXT_POS (start, ZV, ZV_BYTE); |
5129 | else | |
d3d50620 | 5130 | SET_TEXT_POS_FROM_MARKER (start, w->start); |
521b203e | 5131 | |
57b3e30b | 5132 | itdata = bidi_shelve_cache (); |
12c8b416 GM |
5133 | start_display (&it, w, start); |
5134 | move_it_vertically (&it, height); | |
c8bc6f65 | 5135 | bottom_y = line_bottom_y (&it); |
35928349 | 5136 | bidi_unshelve_cache (itdata, 0); |
12c8b416 | 5137 | |
1de65f51 RS |
5138 | /* rms: On a non-window display, |
5139 | the value of it.vpos at the bottom of the screen | |
5140 | seems to be 1 larger than window_box_height (w). | |
5141 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5142 | when ZV is on the last screen line | |
5143 | moves to the previous screen line instead of the last one. */ | |
d3d50620 | 5144 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) |
1de65f51 RS |
5145 | height++; |
5146 | ||
12c8b416 GM |
5147 | /* Add in empty lines at the bottom of the window. */ |
5148 | if (bottom_y < height) | |
5149 | { | |
949cf20f | 5150 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5151 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5152 | } |
5153 | ||
c8bc6f65 GM |
5154 | if (old_buffer) |
5155 | set_buffer_internal (old_buffer); | |
5156 | ||
12c8b416 GM |
5157 | return it.vpos; |
5158 | } | |
5159 | ||
5160 | ||
a7ca3326 | 5161 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
666e158e | 5162 | doc: /* Center point in selected window and maybe redisplay frame. |
3b166f09 | 5163 | With a numeric prefix argument ARG, recenter putting point on screen line ARG |
12bb3111 | 5164 | relative to the selected window. If ARG is negative, it counts up from the |
fdb82f93 PJ |
5165 | bottom of the window. (ARG should be less than the height of the window.) |
5166 | ||
666e158e MB |
5167 | If ARG is omitted or nil, then recenter with point on the middle line of |
5168 | the selected window; if the variable `recenter-redisplay' is non-nil, | |
5169 | also erase the entire frame and redraw it (when `auto-resize-tool-bars' | |
5170 | is set to `grow-only', this resets the tool-bar's height to the minimum | |
5171 | height needed); if `recenter-redisplay' has the special value `tty', | |
53524d93 | 5172 | then only tty frames are redrawn. |
7d1d98ee | 5173 | |
fdb82f93 PJ |
5174 | Just C-u as prefix means put point in the center of the window |
5175 | and redisplay normally--don't erase and redraw the frame. */) | |
5842a27b | 5176 | (register Lisp_Object arg) |
7ab12479 | 5177 | { |
6df47b59 | 5178 | struct window *w = XWINDOW (selected_window); |
d3d50620 | 5179 | struct buffer *buf = XBUFFER (w->buffer); |
478292ed | 5180 | struct buffer *obuf = current_buffer; |
6df47b59 | 5181 | int center_p = 0; |
d311d28c | 5182 | ptrdiff_t charpos, bytepos; |
71f02bc5 | 5183 | EMACS_INT iarg IF_LINT (= 0); |
f6b43440 | 5184 | int this_scroll_margin; |
7ab12479 | 5185 | |
0fa5d25b RS |
5186 | /* If redisplay is suppressed due to an error, try again. */ |
5187 | obuf->display_error_modiff = 0; | |
5188 | ||
413430c5 | 5189 | if (NILP (arg)) |
7ab12479 | 5190 | { |
666e158e MB |
5191 | if (!NILP (Vrecenter_redisplay) |
5192 | && (!EQ (Vrecenter_redisplay, Qtty) | |
5193 | || !NILP (Ftty_type (selected_frame)))) | |
5194 | { | |
ebfa62c0 | 5195 | ptrdiff_t i; |
f02d6d5c | 5196 | |
666e158e MB |
5197 | /* Invalidate pixel data calculated for all compositions. */ |
5198 | for (i = 0; i < n_compositions; i++) | |
5199 | composition_table[i]->font = NULL; | |
7ab12479 | 5200 | |
666e158e MB |
5201 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5202 | ||
5203 | Fredraw_frame (WINDOW_FRAME (w)); | |
5204 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
5205 | } | |
7d1d98ee | 5206 | |
6df47b59 | 5207 | center_p = 1; |
7ab12479 | 5208 | } |
413430c5 | 5209 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5210 | center_p = 1; |
7ab12479 JB |
5211 | else |
5212 | { | |
413430c5 | 5213 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5214 | CHECK_NUMBER (arg); |
ae12ecd7 | 5215 | iarg = XINT (arg); |
7ab12479 JB |
5216 | } |
5217 | ||
478292ed | 5218 | set_buffer_internal (buf); |
7ab12479 | 5219 | |
f6b43440 RS |
5220 | /* Do this after making BUF current |
5221 | in case scroll_margin is buffer-local. */ | |
71f02bc5 | 5222 | this_scroll_margin = |
5f24fa51 | 5223 | max (0, min (scroll_margin, w->total_lines / 4)); |
f6b43440 | 5224 | |
521b203e | 5225 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5226 | have variable-height lines and centering point on the basis of |
5227 | line counts would lead to strange effects. */ | |
d3d50620 | 5228 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5229 | { |
6df47b59 GM |
5230 | if (center_p) |
5231 | { | |
521b203e GM |
5232 | struct it it; |
5233 | struct text_pos pt; | |
57b3e30b | 5234 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5235 | |
521b203e GM |
5236 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5237 | start_display (&it, w, pt); | |
f204989e | 5238 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5239 | charpos = IT_CHARPOS (it); |
5240 | bytepos = IT_BYTEPOS (it); | |
35928349 | 5241 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5242 | } |
f6b43440 | 5243 | else if (iarg < 0) |
6df47b59 | 5244 | { |
521b203e GM |
5245 | struct it it; |
5246 | struct text_pos pt; | |
5895d7b9 | 5247 | ptrdiff_t nlines = min (PTRDIFF_MAX, -iarg); |
f204989e KS |
5248 | int extra_line_spacing; |
5249 | int h = window_box_height (w); | |
57b3e30b | 5250 | void *itdata = bidi_shelve_cache (); |
177c0ea7 | 5251 | |
f6b43440 RS |
5252 | iarg = - max (-iarg, this_scroll_margin); |
5253 | ||
521b203e GM |
5254 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5255 | start_display (&it, w, pt); | |
f204989e KS |
5256 | |
5257 | /* Be sure we have the exact height of the full line containing PT. */ | |
e4cc2dfc | 5258 | move_it_by_lines (&it, 0); |
521b203e | 5259 | |
d466fa4d | 5260 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5261 | height minus what's displayed in the line containing PT, |
5262 | and the lines below. */ | |
f204989e KS |
5263 | it.current_y = 0; |
5264 | it.vpos = 0; | |
e4cc2dfc | 5265 | move_it_by_lines (&it, nlines); |
d466fa4d | 5266 | |
f204989e KS |
5267 | if (it.vpos == nlines) |
5268 | h -= it.current_y; | |
5269 | else | |
5270 | { | |
5271 | /* Last line has no newline */ | |
5272 | h -= line_bottom_y (&it); | |
5273 | it.vpos++; | |
5274 | } | |
5275 | ||
5276 | /* Don't reserve space for extra line spacing of last line. */ | |
5277 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5278 | |
5279 | /* If we can't move down NLINES lines because we hit | |
5280 | the end of the buffer, count in some empty lines. */ | |
5281 | if (it.vpos < nlines) | |
f204989e KS |
5282 | { |
5283 | nlines -= it.vpos; | |
5284 | extra_line_spacing = it.extra_line_spacing; | |
5285 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5286 | } | |
5287 | if (h <= 0) | |
57b3e30b | 5288 | { |
35928349 | 5289 | bidi_unshelve_cache (itdata, 0); |
57b3e30b EZ |
5290 | return Qnil; |
5291 | } | |
201c831a | 5292 | |
f204989e | 5293 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5294 | start_display (&it, w, pt); |
f204989e KS |
5295 | it.current_y = 0; |
5296 | move_it_vertically_backward (&it, h); | |
5297 | ||
5298 | /* If extra line spacing is present, we may move too far | |
5299 | back. This causes the last line to be only partially | |
5300 | visible (which triggers redisplay to recenter that line | |
5301 | in the middle), so move forward. | |
5302 | But ignore extra line spacing on last line, as it is not | |
5303 | considered to be part of the visible height of the line. | |
5304 | */ | |
5305 | h += extra_line_spacing; | |
5306 | while (-it.current_y > h) | |
e4cc2dfc | 5307 | move_it_by_lines (&it, 1); |
f204989e | 5308 | |
521b203e GM |
5309 | charpos = IT_CHARPOS (it); |
5310 | bytepos = IT_BYTEPOS (it); | |
57b3e30b | 5311 | |
35928349 | 5312 | bidi_unshelve_cache (itdata, 0); |
6df47b59 | 5313 | } |
521b203e GM |
5314 | else |
5315 | { | |
5316 | struct position pos; | |
f6b43440 | 5317 | |
f6b43440 RS |
5318 | iarg = max (iarg, this_scroll_margin); |
5319 | ||
c54aa166 | 5320 | pos = *vmotion (PT, PT_BYTE, -iarg, w); |
521b203e GM |
5321 | charpos = pos.bufpos; |
5322 | bytepos = pos.bytepos; | |
5323 | } | |
5324 | } | |
5325 | else | |
5326 | { | |
5327 | struct position pos; | |
5328 | int ht = window_internal_height (w); | |
5329 | ||
5330 | if (center_p) | |
a4429c5b | 5331 | iarg = ht / 2; |
f567c488 KS |
5332 | else if (iarg < 0) |
5333 | iarg += ht; | |
f6b43440 RS |
5334 | |
5335 | /* Don't let it get into the margin at either top or bottom. */ | |
2dd61a9b DA |
5336 | iarg = clip_to_bounds (this_scroll_margin, iarg, |
5337 | ht - this_scroll_margin - 1); | |
177c0ea7 | 5338 | |
c54aa166 | 5339 | pos = *vmotion (PT, PT_BYTE, - iarg, w); |
6df47b59 GM |
5340 | charpos = pos.bufpos; |
5341 | bytepos = pos.bytepos; | |
5342 | } | |
5343 | ||
5344 | /* Set the new window start. */ | |
d3d50620 | 5345 | set_marker_both (w->start, w->buffer, charpos, bytepos); |
9d93ce29 | 5346 | w->window_end_valid = 0; |
177c0ea7 | 5347 | |
c98ff5dd | 5348 | w->optional_new_start = 1; |
95605b1b | 5349 | |
c98ff5dd DA |
5350 | w->start_at_line_beg = (bytepos == BEGV_BYTE || |
5351 | FETCH_BYTE (bytepos - 1) == '\n'); | |
177c0ea7 | 5352 | |
478292ed | 5353 | set_buffer_internal (obuf); |
7ab12479 JB |
5354 | return Qnil; |
5355 | } | |
b7617575 | 5356 | |
81fe0836 | 5357 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5358 | 0, 1, 0, |
5359 | doc: /* Return the height in lines of the text display area of WINDOW. | |
52162052 | 5360 | WINDOW must be a live window and defaults to the selected one. |
8fef9de1 | 5361 | |
105216ed CY |
5362 | The returned height does not include the mode line, any header line, |
5363 | nor any partial-height lines at the bottom of the text area. */) | |
5842a27b | 5364 | (Lisp_Object window) |
81fe0836 | 5365 | { |
52162052 | 5366 | struct window *w = decode_live_window (window); |
81fe0836 | 5367 | int pixel_height = window_box_height (w); |
d3d50620 | 5368 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5369 | return make_number (line_height); |
5370 | } | |
5371 | ||
5372 | ||
7ab12479 JB |
5373 | \f |
5374 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5375 | 1, 1, "P", |
5376 | doc: /* Position point relative to window. | |
87e68db4 JB |
5377 | ARG nil means position point at center of window. |
5378 | Else, ARG specifies vertical position within the window; | |
fdb82f93 | 5379 | zero means top of window, negative means relative to bottom of window. */) |
5842a27b | 5380 | (Lisp_Object arg) |
7ab12479 | 5381 | { |
b7617575 GM |
5382 | struct window *w = XWINDOW (selected_window); |
5383 | int lines, start; | |
540b6aa0 | 5384 | Lisp_Object window; |
f6b43440 RS |
5385 | #if 0 |
5386 | int this_scroll_margin; | |
5387 | #endif | |
7ab12479 | 5388 | |
d3d50620 DA |
5389 | if (!(BUFFERP (w->buffer) |
5390 | && XBUFFER (w->buffer) == current_buffer)) | |
794b75c7 SM |
5391 | /* This test is needed to make sure PT/PT_BYTE make sense in w->buffer |
5392 | when passed below to set_marker_both. */ | |
5393 | error ("move-to-window-line called from unrelated buffer"); | |
6dc1d2d3 | 5394 | |
b7617575 | 5395 | window = selected_window; |
d3d50620 | 5396 | start = marker_position (w->start); |
7ab12479 JB |
5397 | if (start < BEGV || start > ZV) |
5398 | { | |
b7617575 | 5399 | int height = window_internal_height (w); |
cd2be1dd | 5400 | Fvertical_motion (make_number (- (height / 2)), window); |
d3d50620 | 5401 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
c98ff5dd DA |
5402 | w->start_at_line_beg = !NILP (Fbolp ()); |
5403 | w->force_start = 1; | |
7ab12479 JB |
5404 | } |
5405 | else | |
d3d50620 | 5406 | Fgoto_char (w->start); |
7ab12479 | 5407 | |
b7617575 | 5408 | lines = displayed_window_lines (w); |
f6b43440 RS |
5409 | |
5410 | #if 0 | |
71f02bc5 | 5411 | this_scroll_margin = max (0, min (scroll_margin, lines / 4)); |
f6b43440 RS |
5412 | #endif |
5413 | ||
b7617575 GM |
5414 | if (NILP (arg)) |
5415 | XSETFASTINT (arg, lines / 2); | |
5416 | else | |
5417 | { | |
71f02bc5 | 5418 | EMACS_INT iarg = XINT (Fprefix_numeric_value (arg)); |
f6b43440 RS |
5419 | |
5420 | if (iarg < 0) | |
5421 | iarg = iarg + lines; | |
5422 | ||
5423 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5424 | to a place inside the scroll margins (which would cause the | |
5425 | next redisplay to scroll). I wrote this code, but then concluded | |
5426 | it is probably better not to install it. However, it is here | |
5427 | inside #if 0 so as not to lose it. -- rms. */ | |
5428 | ||
5429 | /* Don't let it get into the margin at either top or bottom. */ | |
5430 | iarg = max (iarg, this_scroll_margin); | |
5431 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5432 | #endif | |
5433 | ||
5434 | arg = make_number (iarg); | |
b7617575 GM |
5435 | } |
5436 | ||
c8bc6f65 | 5437 | /* Skip past a partially visible first line. */ |
163784df | 5438 | if (w->vscroll) |
163784df MB |
5439 | XSETINT (arg, XINT (arg) + 1); |
5440 | ||
540b6aa0 | 5441 | return Fvertical_motion (arg, window); |
7ab12479 | 5442 | } |
5500c422 GM |
5443 | |
5444 | ||
7ab12479 | 5445 | \f |
5500c422 GM |
5446 | /*********************************************************************** |
5447 | Window Configuration | |
5448 | ***********************************************************************/ | |
5449 | ||
7ab12479 JB |
5450 | struct save_window_data |
5451 | { | |
b102ceb1 | 5452 | struct vectorlike_header header; |
bdc727bf | 5453 | Lisp_Object selected_frame; |
7ab12479 JB |
5454 | Lisp_Object current_window; |
5455 | Lisp_Object current_buffer; | |
5456 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5457 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5458 | Lisp_Object root_window; |
bdc727bf | 5459 | Lisp_Object focus_frame; |
cbff28e8 RS |
5460 | /* A vector, each of whose elements is a struct saved_window |
5461 | for one window. */ | |
7ab12479 | 5462 | Lisp_Object saved_windows; |
b05b4e27 SM |
5463 | |
5464 | /* All fields above are traced by the GC. | |
5465 | From `fame-cols' down, the fields are ignored by the GC. */ | |
5466 | ||
5467 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
5468 | int frame_tool_bar_lines; | |
7ab12479 | 5469 | }; |
ff06df24 | 5470 | |
cbff28e8 | 5471 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 5472 | struct saved_window |
ea68264b | 5473 | { |
b102ceb1 | 5474 | struct vectorlike_header header; |
496e208e | 5475 | |
28545e04 | 5476 | Lisp_Object window, buffer, start, pointm, mark; |
949cf20f | 5477 | Lisp_Object left_col, top_line, total_cols, total_lines; |
496e208e | 5478 | Lisp_Object normal_cols, normal_lines; |
949cf20f | 5479 | Lisp_Object hscroll, min_hscroll; |
ea68264b GM |
5480 | Lisp_Object parent, prev; |
5481 | Lisp_Object start_at_line_beg; | |
5482 | Lisp_Object display_table; | |
949cf20f KS |
5483 | Lisp_Object left_margin_cols, right_margin_cols; |
5484 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
562dd5e9 | 5485 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type, dedicated; |
b6f67890 | 5486 | Lisp_Object combination_limit, window_parameters; |
ea68264b GM |
5487 | }; |
5488 | ||
7ab12479 JB |
5489 | #define SAVED_WINDOW_N(swv,n) \ |
5490 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
5491 | ||
5492 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 | 5493 | doc: /* Return t if OBJECT is a window-configuration object. */) |
5842a27b | 5494 | (Lisp_Object object) |
7ab12479 | 5495 | { |
6ad0381c | 5496 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
5497 | } |
5498 | ||
3f8ab7bd | 5499 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 | 5500 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
5842a27b | 5501 | (Lisp_Object config) |
3f8ab7bd RS |
5502 | { |
5503 | register struct save_window_data *data; | |
5504 | struct Lisp_Vector *saved_windows; | |
5505 | ||
663fbbba | 5506 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
5507 | |
5508 | data = (struct save_window_data *) XVECTOR (config); | |
5509 | saved_windows = XVECTOR (data->saved_windows); | |
d3d50620 | 5510 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
3f8ab7bd RS |
5511 | } |
5512 | ||
a7ca3326 | 5513 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
5514 | Sset_window_configuration, 1, 1, 0, |
5515 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
5516 | CONFIGURATION must be a value previously returned | |
5517 | by `current-window-configuration' (which see). | |
5518 | If CONFIGURATION was made from a frame that is now deleted, | |
5519 | only frame-independent values can be restored. In this case, | |
5520 | the return value is nil. Otherwise the value is t. */) | |
5842a27b | 5521 | (Lisp_Object configuration) |
7ab12479 | 5522 | { |
7ab12479 JB |
5523 | register struct save_window_data *data; |
5524 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 5525 | Lisp_Object new_current_buffer; |
fd482be5 | 5526 | Lisp_Object frame; |
44fa5b1e | 5527 | FRAME_PTR f; |
d311d28c | 5528 | ptrdiff_t old_point = -1; |
7ab12479 | 5529 | |
663fbbba | 5530 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 5531 | |
2f83aebe | 5532 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
5533 | saved_windows = XVECTOR (data->saved_windows); |
5534 | ||
7ab12479 | 5535 | new_current_buffer = data->current_buffer; |
e578f381 | 5536 | if (!BUFFER_LIVE_P (XBUFFER (new_current_buffer))) |
7ab12479 | 5537 | new_current_buffer = Qnil; |
72695e47 | 5538 | else |
73cadfc1 DK |
5539 | { |
5540 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
5541 | /* The code further down "preserves point" by saving here PT in |
5542 | old_point and then setting it later back into PT. When the | |
5543 | current-selected-window and the final-selected-window both show | |
5544 | the current buffer, this suffers from the problem that the | |
5545 | current PT is the window-point of the current-selected-window, | |
5546 | while the final PT is the point of the final-selected-window, so | |
5547 | this copy from one PT to the other would end up moving the | |
5548 | window-point of the final-selected-window to the window-point of | |
5549 | the current-selected-window. So we have to be careful which | |
5550 | point of the current-buffer we copy into old_point. */ | |
d3d50620 | 5551 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) |
e67a1dea | 5552 | && WINDOWP (selected_window) |
d3d50620 | 5553 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) |
e67a1dea | 5554 | && !EQ (selected_window, data->current_window)) |
4c1acb95 | 5555 | old_point = marker_position (XWINDOW (data->current_window)->pointm); |
e67a1dea SM |
5556 | else |
5557 | old_point = PT; | |
73cadfc1 | 5558 | else |
203eb0aa SM |
5559 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
5560 | point in new_current_buffer as of the last time this buffer was | |
5561 | used. This can be non-deterministic since it can be changed by | |
5562 | things like jit-lock by mere temporary selection of some random | |
5563 | window that happens to show this buffer. | |
5564 | So if possible we want this arbitrary choice of "which point" to | |
5565 | be the one from the to-be-selected-window so as to prevent this | |
5566 | window's cursor from being copied from another window. */ | |
d3d50620 | 5567 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) |
203eb0aa SM |
5568 | /* If current_window = selected_window, its point is in BUF_PT. */ |
5569 | && !EQ (selected_window, data->current_window)) | |
4c1acb95 | 5570 | old_point = marker_position (XWINDOW (data->current_window)->pointm); |
203eb0aa SM |
5571 | else |
5572 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 5573 | } |
7ab12479 | 5574 | |
d3d50620 | 5575 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
fd482be5 | 5576 | f = XFRAME (frame); |
177c0ea7 | 5577 | |
fd482be5 JB |
5578 | /* If f is a dead frame, don't bother rebuilding its window tree. |
5579 | However, there is other stuff we should still try to do below. */ | |
5580 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 5581 | { |
6198ccd0 MR |
5582 | Lisp_Object window; |
5583 | Lisp_Object dead_windows = Qnil; | |
6a6ee00d | 5584 | register Lisp_Object tem, par, pers; |
fd482be5 JB |
5585 | register struct window *w; |
5586 | register struct saved_window *p; | |
5500c422 GM |
5587 | struct window *root_window; |
5588 | struct window **leaf_windows; | |
5589 | int n_leaf_windows; | |
71f02bc5 PE |
5590 | ptrdiff_t k; |
5591 | int i, n; | |
fd482be5 JB |
5592 | |
5593 | /* If the frame has been resized since this window configuration was | |
5594 | made, we change the frame to the size specified in the | |
5595 | configuration, restore the configuration, and then resize it | |
5596 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
5597 | int previous_frame_lines = FRAME_LINES (f); |
5598 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 5599 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 5600 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 5601 | |
37b9743e MR |
5602 | /* Don't do this within the main loop below: This may call Lisp |
5603 | code and is thus potentially unsafe while input is blocked. */ | |
5604 | for (k = 0; k < saved_windows->header.size; k++) | |
5605 | { | |
5606 | p = SAVED_WINDOW_N (saved_windows, k); | |
5607 | window = p->window; | |
5608 | w = XWINDOW (window); | |
5609 | if (!NILP (w->buffer) | |
5610 | && !EQ (w->buffer, p->buffer) | |
e578f381 | 5611 | && BUFFER_LIVE_P (XBUFFER (p->buffer))) |
37b9743e MR |
5612 | /* If a window we restore gets another buffer, record the |
5613 | window's old buffer. */ | |
5614 | call1 (Qrecord_window_buffer, window); | |
5615 | } | |
5616 | ||
d2b35234 RS |
5617 | /* The mouse highlighting code could get screwed up |
5618 | if it runs during this. */ | |
4d7e6e51 | 5619 | block_input (); |
d2b35234 | 5620 | |
b05b4e27 SM |
5621 | if (data->frame_lines != previous_frame_lines |
5622 | || data->frame_cols != previous_frame_cols) | |
5623 | change_frame_size (f, data->frame_lines, | |
5624 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 5625 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 5626 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 5627 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
5628 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
5629 | make_number (0)); | |
4314246f | 5630 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 5631 | if (data->frame_tool_bar_lines |
9ea173e8 | 5632 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
5633 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
5634 | make_number (0)); | |
4314246f | 5635 | #endif |
217f2871 | 5636 | #endif |
fd482be5 | 5637 | |
a46c0153 RS |
5638 | /* "Swap out" point from the selected window's buffer |
5639 | into the window itself. (Normally the pointm of the selected | |
5640 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
5641 | restoring the window contents, and prevent it from |
5642 | being done later on when we select a new window. */ | |
d3d50620 | 5643 | if (! NILP (XWINDOW (selected_window)->buffer)) |
596ae0cf RS |
5644 | { |
5645 | w = XWINDOW (selected_window); | |
d3d50620 DA |
5646 | set_marker_both (w->pointm, |
5647 | w->buffer, | |
5648 | BUF_PT (XBUFFER (w->buffer)), | |
5649 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
596ae0cf RS |
5650 | } |
5651 | ||
fd482be5 | 5652 | windows_or_buffers_changed++; |
29aeee73 | 5653 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 5654 | |
5500c422 | 5655 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 5656 | is a serious redisplay flickering problem. What we would |
5500c422 | 5657 | really like to do is to free only those matrices not reused |
9d14503e | 5658 | below. */ |
5500c422 | 5659 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); |
38182d90 PE |
5660 | leaf_windows = alloca (count_windows (root_window) |
5661 | * sizeof *leaf_windows); | |
5500c422 GM |
5662 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); |
5663 | ||
fd482be5 JB |
5664 | /* Kludge Alert! |
5665 | Mark all windows now on frame as "deleted". | |
5666 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 5667 | |
fd482be5 JB |
5668 | Save their current buffers in their height fields, since we may |
5669 | need it later, if a buffer saved in the configuration is now | |
5670 | dead. */ | |
be7f5545 | 5671 | delete_all_child_windows (FRAME_ROOT_WINDOW (f)); |
fd482be5 | 5672 | |
eab3844f | 5673 | for (k = 0; k < saved_windows->header.size; k++) |
fd482be5 JB |
5674 | { |
5675 | p = SAVED_WINDOW_N (saved_windows, k); | |
6198ccd0 MR |
5676 | window = p->window; |
5677 | w = XWINDOW (window); | |
e8c17b81 | 5678 | wset_next (w, Qnil); |
7ab12479 | 5679 | |
fd482be5 | 5680 | if (!NILP (p->parent)) |
e8c17b81 PE |
5681 | wset_parent |
5682 | (w, SAVED_WINDOW_N (saved_windows, XFASTINT (p->parent))->window); | |
fd482be5 | 5683 | else |
e8c17b81 | 5684 | wset_parent (w, Qnil); |
7ab12479 | 5685 | |
fd482be5 | 5686 | if (!NILP (p->prev)) |
7ab12479 | 5687 | { |
e8c17b81 PE |
5688 | wset_prev |
5689 | (w, SAVED_WINDOW_N (saved_windows, XFASTINT (p->prev))->window); | |
5690 | wset_next (XWINDOW (w->prev), p->window); | |
fd482be5 JB |
5691 | } |
5692 | else | |
5693 | { | |
e8c17b81 | 5694 | wset_prev (w, Qnil); |
d3d50620 | 5695 | if (!NILP (w->parent)) |
fd482be5 | 5696 | { |
5f24fa51 | 5697 | if (XINT (p->total_cols) == XWINDOW (w->parent)->total_cols) |
fd482be5 | 5698 | { |
e8c17b81 PE |
5699 | wset_vchild (XWINDOW (w->parent), p->window); |
5700 | wset_hchild (XWINDOW (w->parent), Qnil); | |
fd482be5 JB |
5701 | } |
5702 | else | |
5703 | { | |
e8c17b81 PE |
5704 | wset_hchild (XWINDOW (w->parent), p->window); |
5705 | wset_vchild (XWINDOW (w->parent), Qnil); | |
fd482be5 JB |
5706 | } |
5707 | } | |
5708 | } | |
5709 | ||
095d384d DA |
5710 | /* If we squirreled away the buffer, restore it now. */ |
5711 | if (BUFFERP (w->combination_limit)) | |
5712 | wset_buffer (w, w->combination_limit); | |
5f24fa51 DA |
5713 | w->left_col = XFASTINT (p->left_col); |
5714 | w->top_line = XFASTINT (p->top_line); | |
5715 | w->total_cols = XFASTINT (p->total_cols); | |
5716 | w->total_lines = XFASTINT (p->total_lines); | |
e8c17b81 PE |
5717 | wset_normal_cols (w, p->normal_cols); |
5718 | wset_normal_lines (w, p->normal_lines); | |
80b00b08 DA |
5719 | w->hscroll = XFASTINT (p->hscroll); |
5720 | w->min_hscroll = XFASTINT (p->min_hscroll); | |
e8c17b81 PE |
5721 | wset_display_table (w, p->display_table); |
5722 | wset_left_margin_cols (w, p->left_margin_cols); | |
5723 | wset_right_margin_cols (w, p->right_margin_cols); | |
5724 | wset_left_fringe_width (w, p->left_fringe_width); | |
5725 | wset_right_fringe_width (w, p->right_fringe_width); | |
2af3565e | 5726 | w->fringes_outside_margins = !NILP (p->fringes_outside_margins); |
e8c17b81 PE |
5727 | wset_scroll_bar_width (w, p->scroll_bar_width); |
5728 | wset_vertical_scroll_bar_type (w, p->vertical_scroll_bar_type); | |
5729 | wset_dedicated (w, p->dedicated); | |
5730 | wset_combination_limit (w, p->combination_limit); | |
6a6ee00d MR |
5731 | /* Restore any window parameters that have been saved. |
5732 | Parameters that have not been saved are left alone. */ | |
5733 | for (tem = p->window_parameters; CONSP (tem); tem = XCDR (tem)) | |
5734 | { | |
5735 | pers = XCAR (tem); | |
5736 | if (CONSP (pers)) | |
5737 | { | |
5738 | if (NILP (XCDR (pers))) | |
5739 | { | |
d3d50620 | 5740 | par = Fassq (XCAR (pers), w->window_parameters); |
6a6ee00d MR |
5741 | if (CONSP (par) && !NILP (XCDR (par))) |
5742 | /* Reset a parameter to nil if and only if it | |
5743 | has a non-nil association. Don't make new | |
5744 | associations. */ | |
5745 | Fsetcdr (par, Qnil); | |
5746 | } | |
5747 | else | |
5748 | /* Always restore a non-nil value. */ | |
5749 | Fset_window_parameter (window, XCAR (pers), XCDR (pers)); | |
5750 | } | |
5751 | } | |
5752 | ||
80b00b08 DA |
5753 | w->last_modified = 0; |
5754 | w->last_overlay_modified = 0; | |
fd482be5 JB |
5755 | |
5756 | /* Reinstall the saved buffer and pointers into it. */ | |
5757 | if (NILP (p->buffer)) | |
6198ccd0 | 5758 | /* An internal window. */ |
e8c17b81 | 5759 | wset_buffer (w, p->buffer); |
e578f381 | 5760 | else if (BUFFER_LIVE_P (XBUFFER (p->buffer))) |
6198ccd0 MR |
5761 | /* If saved buffer is alive, install it. */ |
5762 | { | |
e8c17b81 PE |
5763 | wset_buffer (w, p->buffer); |
5764 | w->start_at_line_beg = !NILP (p->start_at_line_beg); | |
5765 | set_marker_restricted (w->start, p->start, w->buffer); | |
5766 | set_marker_restricted (w->pointm, p->pointm, | |
5767 | w->buffer); | |
5768 | Fset_marker (BVAR (XBUFFER (w->buffer), mark), | |
5769 | p->mark, w->buffer); | |
5770 | ||
5771 | /* As documented in Fcurrent_window_configuration, don't | |
5772 | restore the location of point in the buffer which was | |
5773 | current when the window configuration was recorded. */ | |
5774 | if (!EQ (p->buffer, new_current_buffer) | |
5775 | && XBUFFER (p->buffer) == current_buffer) | |
5776 | Fgoto_char (w->pointm); | |
077288cf | 5777 | } |
d3d50620 | 5778 | else if (!NILP (w->buffer) |
e578f381 | 5779 | && BUFFER_LIVE_P (XBUFFER (w->buffer))) |
077288cf DA |
5780 | /* Keep window's old buffer; make sure the markers are |
5781 | real. */ | |
5782 | { | |
5783 | /* Set window markers at start of visible range. */ | |
d3d50620 | 5784 | if (XMARKER (w->start)->buffer == 0) |
f74de345 | 5785 | set_marker_restricted_both (w->start, w->buffer, 0, 0); |
d3d50620 | 5786 | if (XMARKER (w->pointm)->buffer == 0) |
f00af5b1 | 5787 | set_marker_restricted_both |
d3d50620 DA |
5788 | (w->pointm, w->buffer, |
5789 | BUF_PT (XBUFFER (w->buffer)), | |
5790 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
077288cf DA |
5791 | w->start_at_line_beg = 1; |
5792 | } | |
fd482be5 | 5793 | else |
6198ccd0 | 5794 | /* Window has no live buffer, get one. */ |
fd482be5 | 5795 | { |
6198ccd0 MR |
5796 | /* Get the buffer via other_buffer_safely in order to |
5797 | avoid showing an unimportant buffer and, if necessary, to | |
5798 | recreate *scratch* in the course (part of Juanma's bs-show | |
5799 | scenario from March 2011). */ | |
e8c17b81 | 5800 | wset_buffer (w, other_buffer_safely (Fcurrent_buffer ())); |
6198ccd0 MR |
5801 | /* This will set the markers to beginning of visible |
5802 | range. */ | |
f74de345 DA |
5803 | set_marker_restricted_both (w->start, w->buffer, 0, 0); |
5804 | set_marker_restricted_both (w->pointm, w->buffer, 0, 0); | |
c98ff5dd | 5805 | w->start_at_line_beg = 1; |
d3d50620 | 5806 | if (!NILP (w->dedicated)) |
6198ccd0 MR |
5807 | /* Record this window as dead. */ |
5808 | dead_windows = Fcons (window, dead_windows); | |
5809 | /* Make sure window is no more dedicated. */ | |
e8c17b81 | 5810 | wset_dedicated (w, Qnil); |
7ab12479 JB |
5811 | } |
5812 | } | |
9ace597f | 5813 | |
f00af5b1 | 5814 | fset_root_window (f, data->root_window); |
a46c0153 RS |
5815 | /* Arrange *not* to restore point in the buffer that was |
5816 | current when the window configuration was saved. */ | |
d3d50620 DA |
5817 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
5818 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 5819 | make_number (old_point), |
d3d50620 | 5820 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 5821 | |
6198ccd0 MR |
5822 | /* In the following call to `select-window', prevent "swapping out |
5823 | point" in the old selected window using the buffer that has | |
5824 | been restored into it. We already swapped out that point from | |
5825 | that window's old buffer. */ | |
e6b84b30 | 5826 | select_window (data->current_window, Qnil, 1); |
d3d50620 | 5827 | BVAR (XBUFFER (XWINDOW (selected_window)->buffer), last_selected_window) |
396a830c | 5828 | = selected_window; |
7ab12479 | 5829 | |
db269683 | 5830 | if (NILP (data->focus_frame) |
017b2bad | 5831 | || (FRAMEP (data->focus_frame) |
db269683 JB |
5832 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
5833 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 5834 | |
fd482be5 | 5835 | /* Set the screen height to the value it had before this function. */ |
949cf20f KS |
5836 | if (previous_frame_lines != FRAME_LINES (f) |
5837 | || previous_frame_cols != FRAME_COLS (f)) | |
5838 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 5839 | 0, 0, 0); |
e3678b64 | 5840 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 5841 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
5842 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
5843 | make_number (0)); | |
4314246f | 5844 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
5845 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
5846 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
5847 | make_number (0)); | |
4314246f | 5848 | #endif |
217f2871 | 5849 | #endif |
d2b35234 | 5850 | |
5500c422 | 5851 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
5852 | for (i = n = 0; i < n_leaf_windows; ++i) |
5853 | { | |
d3d50620 | 5854 | if (NILP (leaf_windows[i]->buffer)) |
c4280705 GM |
5855 | { |
5856 | /* Assert it's not reused as a combination. */ | |
d3d50620 DA |
5857 | eassert (NILP (leaf_windows[i]->hchild) |
5858 | && NILP (leaf_windows[i]->vchild)); | |
c4280705 | 5859 | free_window_matrices (leaf_windows[i]); |
c4280705 | 5860 | } |
d3d50620 | 5861 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) |
c4280705 GM |
5862 | ++n; |
5863 | } | |
177c0ea7 | 5864 | |
5500c422 | 5865 | adjust_glyphs (f); |
4d7e6e51 | 5866 | unblock_input (); |
756b6edc | 5867 | |
6198ccd0 MR |
5868 | /* Scan dead buffer windows. */ |
5869 | for (; CONSP (dead_windows); dead_windows = XCDR (dead_windows)) | |
5870 | { | |
5871 | window = XCAR (dead_windows); | |
5872 | if (WINDOW_LIVE_P (window) && !EQ (window, FRAME_ROOT_WINDOW (f))) | |
5873 | delete_deletable_window (window); | |
5874 | } | |
5875 | ||
478292ed RS |
5876 | /* Fselect_window will have made f the selected frame, so we |
5877 | reselect the proper frame here. Fhandle_switch_frame will change the | |
5878 | selected window too, but that doesn't make the call to | |
5879 | Fselect_window above totally superfluous; it still sets f's | |
5880 | selected window. */ | |
5881 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
c6932ecd | 5882 | do_switch_frame (data->selected_frame, 0, 0, Qnil); |
478292ed | 5883 | |
eeca6f6f | 5884 | run_window_configuration_change_hook (f); |
478292ed | 5885 | } |
bdc727bf JB |
5886 | |
5887 | if (!NILP (new_current_buffer)) | |
c4b6914d MR |
5888 | { |
5889 | Fset_buffer (new_current_buffer); | |
5890 | /* If the new current buffer doesn't appear in the selected | |
5891 | window, go to its old point (see bug#12208). */ | |
5892 | if (!EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) | |
5893 | Fgoto_char (make_number (old_point)); | |
5894 | } | |
bdc727bf | 5895 | |
478292ed | 5896 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 5897 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 5898 | |
3f8ab7bd | 5899 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
5900 | } |
5901 | ||
562dd5e9 | 5902 | |
be7f5545 MR |
5903 | /* Recursively delete all child windows reachable via the next, vchild, |
5904 | and hchild slots of WINDOW. */ | |
fd482be5 | 5905 | void |
be7f5545 | 5906 | delete_all_child_windows (Lisp_Object window) |
7ab12479 | 5907 | { |
fa8a67e6 MR |
5908 | register struct window *w; |
5909 | ||
5910 | w = XWINDOW (window); | |
5911 | ||
d3d50620 | 5912 | if (!NILP (w->next)) |
fa8a67e6 | 5913 | /* Delete WINDOW's siblings (we traverse postorderly). */ |
d3d50620 | 5914 | delete_all_child_windows (w->next); |
605be8af | 5915 | |
d3d50620 | 5916 | if (!NILP (w->vchild)) |
fa8a67e6 | 5917 | { |
d3d50620 | 5918 | delete_all_child_windows (w->vchild); |
e8c17b81 | 5919 | wset_vchild (w, Qnil); |
fa8a67e6 | 5920 | } |
d3d50620 | 5921 | else if (!NILP (w->hchild)) |
fa8a67e6 | 5922 | { |
d3d50620 | 5923 | delete_all_child_windows (w->hchild); |
e8c17b81 | 5924 | wset_hchild (w, Qnil); |
fa8a67e6 | 5925 | } |
d3d50620 | 5926 | else if (!NILP (w->buffer)) |
fa8a67e6 MR |
5927 | { |
5928 | unshow_buffer (w); | |
d3d50620 DA |
5929 | unchain_marker (XMARKER (w->pointm)); |
5930 | unchain_marker (XMARKER (w->start)); | |
095d384d DA |
5931 | /* Since combination limit makes sense for an internal windows |
5932 | only, we use this slot to save the buffer for the sake of | |
5933 | possible resurrection in Fset_window_configuration. */ | |
5934 | wset_combination_limit (w, w->buffer); | |
e8c17b81 | 5935 | wset_buffer (w, Qnil); |
fa8a67e6 | 5936 | } |
acf70840 GM |
5937 | |
5938 | Vwindow_list = Qnil; | |
7ab12479 JB |
5939 | } |
5940 | \f | |
5941 | static int | |
971de7fb | 5942 | count_windows (register struct window *window) |
7ab12479 JB |
5943 | { |
5944 | register int count = 1; | |
d3d50620 DA |
5945 | if (!NILP (window->next)) |
5946 | count += count_windows (XWINDOW (window->next)); | |
5947 | if (!NILP (window->vchild)) | |
5948 | count += count_windows (XWINDOW (window->vchild)); | |
5949 | if (!NILP (window->hchild)) | |
5950 | count += count_windows (XWINDOW (window->hchild)); | |
7ab12479 JB |
5951 | return count; |
5952 | } | |
5953 | ||
5500c422 | 5954 | |
177c0ea7 | 5955 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 | 5956 | Value is last index + 1. */ |
5500c422 | 5957 | static int |
971de7fb | 5958 | get_leaf_windows (struct window *w, struct window **flat, int i) |
5500c422 GM |
5959 | { |
5960 | while (w) | |
5961 | { | |
d3d50620 DA |
5962 | if (!NILP (w->hchild)) |
5963 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
5964 | else if (!NILP (w->vchild)) | |
5965 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 5966 | else |
5500c422 GM |
5967 | flat[i++] = w; |
5968 | ||
d3d50620 | 5969 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
5500c422 GM |
5970 | } |
5971 | ||
5972 | return i; | |
5973 | } | |
5974 | ||
5975 | ||
5976 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
c80e3b4a | 5977 | null if W's current matrix is invalid, so that no meaningful glyph |
5500c422 | 5978 | can be returned. */ |
5500c422 | 5979 | struct glyph * |
971de7fb | 5980 | get_phys_cursor_glyph (struct window *w) |
5500c422 GM |
5981 | { |
5982 | struct glyph_row *row; | |
5983 | struct glyph *glyph; | |
f8fe6f96 | 5984 | int hpos = w->phys_cursor.hpos; |
5500c422 | 5985 | |
f8fe6f96 EZ |
5986 | if (!(w->phys_cursor.vpos >= 0 |
5987 | && w->phys_cursor.vpos < w->current_matrix->nrows)) | |
5988 | return NULL; | |
5989 | ||
5990 | row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos); | |
5991 | if (!row->enabled_p) | |
5992 | return NULL; | |
5993 | ||
80b00b08 | 5994 | if (w->hscroll) |
f8fe6f96 EZ |
5995 | { |
5996 | /* When the window is hscrolled, cursor hpos can legitimately be | |
5997 | out of bounds, but we draw the cursor at the corresponding | |
5998 | window margin in that case. */ | |
5999 | if (!row->reversed_p && hpos < 0) | |
6000 | hpos = 0; | |
6001 | if (row->reversed_p && hpos >= row->used[TEXT_AREA]) | |
6002 | hpos = row->used[TEXT_AREA] - 1; | |
6003 | } | |
5500c422 | 6004 | |
908589fd | 6005 | if (hpos >= 0 && hpos < row->used[TEXT_AREA]) |
f8fe6f96 | 6006 | glyph = row->glyphs[TEXT_AREA] + hpos; |
5500c422 GM |
6007 | else |
6008 | glyph = NULL; | |
6009 | ||
6010 | return glyph; | |
6011 | } | |
6012 | ||
6013 | ||
7ab12479 | 6014 | static int |
971de7fb | 6015 | save_window_save (Lisp_Object window, struct Lisp_Vector *vector, int i) |
7ab12479 JB |
6016 | { |
6017 | register struct saved_window *p; | |
6018 | register struct window *w; | |
6a6ee00d | 6019 | register Lisp_Object tem, pers, par; |
7ab12479 | 6020 | |
d3d50620 | 6021 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
6022 | { |
6023 | p = SAVED_WINDOW_N (vector, i); | |
6024 | w = XWINDOW (window); | |
6025 | ||
e8c17b81 | 6026 | wset_temslot (w, make_number (i)); i++; |
7ab12479 | 6027 | p->window = window; |
d3d50620 | 6028 | p->buffer = w->buffer; |
5f24fa51 DA |
6029 | p->left_col = make_number (w->left_col); |
6030 | p->top_line = make_number (w->top_line); | |
6031 | p->total_cols = make_number (w->total_cols); | |
6032 | p->total_lines = make_number (w->total_lines); | |
d3d50620 DA |
6033 | p->normal_cols = w->normal_cols; |
6034 | p->normal_lines = w->normal_lines; | |
80b00b08 DA |
6035 | XSETFASTINT (p->hscroll, w->hscroll); |
6036 | XSETFASTINT (p->min_hscroll, w->min_hscroll); | |
d3d50620 DA |
6037 | p->display_table = w->display_table; |
6038 | p->left_margin_cols = w->left_margin_cols; | |
6039 | p->right_margin_cols = w->right_margin_cols; | |
6040 | p->left_fringe_width = w->left_fringe_width; | |
6041 | p->right_fringe_width = w->right_fringe_width; | |
2af3565e | 6042 | p->fringes_outside_margins = w->fringes_outside_margins ? Qt : Qnil; |
d3d50620 DA |
6043 | p->scroll_bar_width = w->scroll_bar_width; |
6044 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6045 | p->dedicated = w->dedicated; | |
6046 | p->combination_limit = w->combination_limit; | |
6a6ee00d MR |
6047 | p->window_parameters = Qnil; |
6048 | ||
6049 | if (!NILP (Vwindow_persistent_parameters)) | |
6050 | { | |
6051 | /* Run cycle detection on Vwindow_persistent_parameters. */ | |
6052 | Lisp_Object tortoise, hare; | |
6053 | ||
6054 | hare = tortoise = Vwindow_persistent_parameters; | |
6055 | while (CONSP (hare)) | |
6056 | { | |
6057 | hare = XCDR (hare); | |
6058 | if (!CONSP (hare)) | |
6059 | break; | |
6060 | ||
6061 | hare = XCDR (hare); | |
6062 | tortoise = XCDR (tortoise); | |
6063 | ||
6064 | if (EQ (hare, tortoise)) | |
6065 | /* Reset Vwindow_persistent_parameters to Qnil. */ | |
6066 | { | |
6067 | Vwindow_persistent_parameters = Qnil; | |
6068 | break; | |
6069 | } | |
6070 | } | |
6071 | ||
6072 | for (tem = Vwindow_persistent_parameters; CONSP (tem); | |
6073 | tem = XCDR (tem)) | |
6074 | { | |
6075 | pers = XCAR (tem); | |
34a02f46 MR |
6076 | /* Save values for persistent window parameters. */ |
6077 | if (CONSP (pers) && !NILP (XCDR (pers))) | |
6a6ee00d | 6078 | { |
d3d50620 | 6079 | par = Fassq (XCAR (pers), w->window_parameters); |
6a6ee00d MR |
6080 | if (NILP (par)) |
6081 | /* If the window has no value for the parameter, | |
6082 | make one. */ | |
6083 | p->window_parameters = Fcons (Fcons (XCAR (pers), Qnil), | |
6084 | p->window_parameters); | |
6085 | else | |
6086 | /* If the window has a value for the parameter, | |
6087 | save it. */ | |
6088 | p->window_parameters = Fcons (Fcons (XCAR (par), | |
6089 | XCDR (par)), | |
6090 | p->window_parameters); | |
6091 | } | |
6092 | } | |
6093 | } | |
6094 | ||
d3d50620 | 6095 | if (!NILP (w->buffer)) |
7ab12479 | 6096 | { |
6a6ee00d MR |
6097 | /* Save w's value of point in the window configuration. If w |
6098 | is the selected window, then get the value of point from | |
6099 | the buffer; pointm is garbage in the selected window. */ | |
7ab12479 | 6100 | if (EQ (window, selected_window)) |
d3d50620 DA |
6101 | p->pointm = build_marker (XBUFFER (w->buffer), |
6102 | BUF_PT (XBUFFER (w->buffer)), | |
6103 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 | 6104 | else |
d3d50620 | 6105 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
de8c03dc SM |
6106 | XMARKER (p->pointm)->insertion_type |
6107 | = !NILP (Vwindow_point_insertion_type); | |
7ab12479 | 6108 | |
d3d50620 | 6109 | p->start = Fcopy_marker (w->start, Qnil); |
c98ff5dd | 6110 | p->start_at_line_beg = w->start_at_line_beg ? Qt : Qnil; |
7ab12479 | 6111 | |
d3d50620 | 6112 | tem = BVAR (XBUFFER (w->buffer), mark); |
eeb82665 | 6113 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6114 | } |
6115 | else | |
6116 | { | |
6117 | p->pointm = Qnil; | |
6118 | p->start = Qnil; | |
6119 | p->mark = Qnil; | |
6120 | p->start_at_line_beg = Qnil; | |
6121 | } | |
6122 | ||
d3d50620 | 6123 | if (NILP (w->parent)) |
7ab12479 JB |
6124 | p->parent = Qnil; |
6125 | else | |
d3d50620 | 6126 | p->parent = XWINDOW (w->parent)->temslot; |
7ab12479 | 6127 | |
d3d50620 | 6128 | if (NILP (w->prev)) |
7ab12479 JB |
6129 | p->prev = Qnil; |
6130 | else | |
d3d50620 | 6131 | p->prev = XWINDOW (w->prev)->temslot; |
7ab12479 | 6132 | |
d3d50620 DA |
6133 | if (!NILP (w->vchild)) |
6134 | i = save_window_save (w->vchild, vector, i); | |
6135 | if (!NILP (w->hchild)) | |
6136 | i = save_window_save (w->hchild, vector, i); | |
7ab12479 JB |
6137 | } |
6138 | ||
6139 | return i; | |
6140 | } | |
6141 | ||
a7ca3326 | 6142 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6143 | Scurrent_window_configuration, 0, 1, 0, |
6144 | doc: /* Return an object representing the current window configuration of FRAME. | |
6145 | If FRAME is nil or omitted, use the selected frame. | |
6146 | This describes the number of windows, their sizes and current buffers, | |
6147 | and for each displayed buffer, where display starts, and the positions of | |
6148 | point and mark. An exception is made for point in the current buffer: | |
6149 | its value is -not- saved. | |
6150 | This also records the currently selected frame, and FRAME's focus | |
34a02f46 MR |
6151 | redirection (see `redirect-frame-focus'). The variable |
6152 | `window-persistent-parameters' specifies which window parameters are | |
6153 | saved by this function. */) | |
5842a27b | 6154 | (Lisp_Object frame) |
7ab12479 JB |
6155 | { |
6156 | register Lisp_Object tem; | |
6157 | register int n_windows; | |
6158 | register struct save_window_data *data; | |
6159 | register int i; | |
d9f07150 | 6160 | struct frame *f = decode_live_frame (frame); |
7ab12479 | 6161 | |
44fa5b1e | 6162 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
6163 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
6164 | PVEC_WINDOW_CONFIGURATION); | |
6165 | ||
6166 | data->frame_cols = FRAME_COLS (f); | |
6167 | data->frame_lines = FRAME_LINES (f); | |
6168 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
6169 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 6170 | data->selected_frame = selected_frame; |
44fa5b1e | 6171 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6172 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6173 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6174 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6175 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6176 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
25721f5b | 6177 | tem = make_uninit_vector (n_windows); |
7ab12479 JB |
6178 | data->saved_windows = tem; |
6179 | for (i = 0; i < n_windows; i++) | |
28be1ada | 6180 | ASET (tem, i, |
25721f5b | 6181 | Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil)); |
a1d58e5b | 6182 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6183 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6184 | return (tem); |
6185 | } | |
5500c422 GM |
6186 | \f |
6187 | /*********************************************************************** | |
6188 | Marginal Areas | |
6189 | ***********************************************************************/ | |
6190 | ||
6191 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6192 | 2, 3, 0, |
fdb82f93 | 6193 | doc: /* Set width of marginal areas of window WINDOW. |
52162052 MR |
6194 | WINDOW must be a live window and defaults to the selected one. |
6195 | ||
6b61353c KH |
6196 | Second arg LEFT-WIDTH specifies the number of character cells to |
6197 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6198 | does the same for the right marginal area. A nil width parameter | |
6199 | means no margin. */) | |
5842a27b | 6200 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width) |
5500c422 | 6201 | { |
52162052 | 6202 | struct window *w = decode_live_window (window); |
5500c422 | 6203 | |
6b61353c KH |
6204 | /* Translate negative or zero widths to nil. |
6205 | Margins that are too wide have to be checked elsewhere. */ | |
949cf20f | 6206 | |
c10ce82e | 6207 | if (!NILP (left_width)) |
6b61353c | 6208 | { |
c10ce82e JB |
6209 | CHECK_NUMBER (left_width); |
6210 | if (XINT (left_width) <= 0) | |
6211 | left_width = Qnil; | |
6b61353c | 6212 | } |
5500c422 | 6213 | |
c10ce82e | 6214 | if (!NILP (right_width)) |
6b61353c | 6215 | { |
c10ce82e JB |
6216 | CHECK_NUMBER (right_width); |
6217 | if (XINT (right_width) <= 0) | |
6218 | right_width = Qnil; | |
6b61353c | 6219 | } |
5500c422 | 6220 | |
d3d50620 DA |
6221 | if (!EQ (w->left_margin_cols, left_width) |
6222 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6223 | { |
e8c17b81 PE |
6224 | wset_left_margin_cols (w, left_width); |
6225 | wset_right_margin_cols (w, right_width); | |
949cf20f KS |
6226 | |
6227 | adjust_window_margins (w); | |
6228 | ||
6229 | ++windows_or_buffers_changed; | |
6230 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6231 | } | |
5500c422 | 6232 | |
5500c422 GM |
6233 | return Qnil; |
6234 | } | |
6235 | ||
6236 | ||
6237 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6238 | 0, 1, 0, | |
fdb82f93 | 6239 | doc: /* Get width of marginal areas of window WINDOW. |
52162052 MR |
6240 | WINDOW must be a live window and defaults to the selected one. |
6241 | ||
fdb82f93 PJ |
6242 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). |
6243 | If a marginal area does not exist, its width will be returned | |
6244 | as nil. */) | |
5842a27b | 6245 | (Lisp_Object window) |
5500c422 | 6246 | { |
52162052 | 6247 | struct window *w = decode_live_window (window); |
d3d50620 | 6248 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
949cf20f KS |
6249 | } |
6250 | ||
6251 | ||
6252 | \f | |
6253 | /*********************************************************************** | |
6254 | Fringes | |
6255 | ***********************************************************************/ | |
6256 | ||
a7ca3326 | 6257 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, |
949cf20f | 6258 | 2, 4, 0, |
6b61353c | 6259 | doc: /* Set the fringe widths of window WINDOW. |
52162052 MR |
6260 | WINDOW must be a live window and defaults to the selected one. |
6261 | ||
6b61353c KH |
6262 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for |
6263 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6264 | fringe width. If a fringe width arg is nil, that means to use the | |
6265 | frame's default fringe width. Default fringe widths can be set with | |
6266 | the command `set-fringe-style'. | |
6267 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6268 | outside of the display margins. By default, fringes are drawn between | |
6269 | display marginal areas and the text area. */) | |
5842a27b | 6270 | (Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width, Lisp_Object outside_margins) |
949cf20f | 6271 | { |
52162052 | 6272 | struct window *w = decode_live_window (window); |
2af3565e | 6273 | int outside = !NILP (outside_margins); |
949cf20f | 6274 | |
c10ce82e JB |
6275 | if (!NILP (left_width)) |
6276 | CHECK_NATNUM (left_width); | |
6277 | if (!NILP (right_width)) | |
6278 | CHECK_NATNUM (right_width); | |
5a857365 | 6279 | |
017e297e | 6280 | /* Do nothing on a tty. */ |
d46c6df5 | 6281 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
d3d50620 DA |
6282 | && (!EQ (w->left_fringe_width, left_width) |
6283 | || !EQ (w->right_fringe_width, right_width) | |
2af3565e | 6284 | || w->fringes_outside_margins != outside)) |
949cf20f | 6285 | { |
e8c17b81 PE |
6286 | wset_left_fringe_width (w, left_width); |
6287 | wset_right_fringe_width (w, right_width); | |
2af3565e | 6288 | w->fringes_outside_margins = outside; |
949cf20f KS |
6289 | |
6290 | adjust_window_margins (w); | |
6291 | ||
6292 | clear_glyph_matrix (w->current_matrix); | |
9d93ce29 | 6293 | w->window_end_valid = 0; |
949cf20f KS |
6294 | |
6295 | ++windows_or_buffers_changed; | |
6296 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6297 | } | |
6298 | ||
6299 | return Qnil; | |
6300 | } | |
6301 | ||
6302 | ||
6303 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6304 | 0, 1, 0, | |
6305 | doc: /* Get width of fringes of window WINDOW. | |
52162052 MR |
6306 | WINDOW must be a live window and defaults to the selected one. |
6307 | ||
6b61353c | 6308 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
5842a27b | 6309 | (Lisp_Object window) |
949cf20f | 6310 | { |
52162052 | 6311 | struct window *w = decode_live_window (window); |
d46c6df5 | 6312 | |
89bc0592 DA |
6313 | return list3 (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6314 | make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
6315 | WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) ? Qt : Qnil); | |
949cf20f KS |
6316 | } |
6317 | ||
6318 | ||
6319 | \f | |
6320 | /*********************************************************************** | |
6321 | Scroll bars | |
6322 | ***********************************************************************/ | |
6323 | ||
a7ca3326 | 6324 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, |
16a97296 | 6325 | Sset_window_scroll_bars, 2, 4, 0, |
949cf20f | 6326 | doc: /* Set width and type of scroll bars of window WINDOW. |
52162052 MR |
6327 | WINDOW must be a live window and defaults to the selected one. |
6328 | ||
949cf20f KS |
6329 | Second parameter WIDTH specifies the pixel width for the scroll bar; |
6330 | this is automatically adjusted to a multiple of the frame column width. | |
6331 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6332 | bar: left, right, or nil. | |
6b61353c | 6333 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6334 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6335 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
5842a27b | 6336 | (Lisp_Object window, Lisp_Object width, Lisp_Object vertical_type, Lisp_Object horizontal_type) |
949cf20f | 6337 | { |
52162052 | 6338 | struct window *w = decode_live_window (window); |
949cf20f KS |
6339 | |
6340 | if (!NILP (width)) | |
0f8fe9a2 | 6341 | { |
af5a5a98 | 6342 | CHECK_RANGED_INTEGER (width, 0, INT_MAX); |
949cf20f | 6343 | |
0f8fe9a2 SM |
6344 | if (XINT (width) == 0) |
6345 | vertical_type = Qnil; | |
6346 | } | |
949cf20f | 6347 | |
413a79ad | 6348 | if (!(NILP (vertical_type) |
0cc1039f | 6349 | || EQ (vertical_type, Qleft) |
6b61353c KH |
6350 | || EQ (vertical_type, Qright) |
6351 | || EQ (vertical_type, Qt))) | |
6352 | error ("Invalid type of vertical scroll bar"); | |
6353 | ||
d3d50620 DA |
6354 | if (!EQ (w->scroll_bar_width, width) |
6355 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
949cf20f | 6356 | { |
e8c17b81 PE |
6357 | wset_scroll_bar_width (w, width); |
6358 | wset_vertical_scroll_bar_type (w, vertical_type); | |
949cf20f KS |
6359 | |
6360 | adjust_window_margins (w); | |
6361 | ||
6362 | clear_glyph_matrix (w->current_matrix); | |
9d93ce29 | 6363 | w->window_end_valid = 0; |
949cf20f KS |
6364 | |
6365 | ++windows_or_buffers_changed; | |
6366 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6367 | } | |
6368 | ||
6369 | return Qnil; | |
6370 | } | |
6371 | ||
6372 | ||
6373 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6374 | 0, 1, 0, | |
6375 | doc: /* Get width and type of scroll bars of window WINDOW. | |
52162052 MR |
6376 | WINDOW must be a live window and defaults to the selected one. |
6377 | ||
6b61353c KH |
6378 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6379 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6380 | value. */) | |
5842a27b | 6381 | (Lisp_Object window) |
949cf20f | 6382 | { |
52162052 | 6383 | struct window *w = decode_live_window (window); |
89bc0592 DA |
6384 | |
6385 | return list4 (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
949cf20f KS |
6386 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) |
6387 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
89bc0592 DA |
6388 | make_number (WINDOW_SCROLL_BAR_COLS (w)), |
6389 | w->vertical_scroll_bar_type, Qnil); | |
5500c422 GM |
6390 | } |
6391 | ||
6392 | ||
7ab12479 | 6393 | \f |
5500c422 GM |
6394 | /*********************************************************************** |
6395 | Smooth scrolling | |
6396 | ***********************************************************************/ | |
6397 | ||
0cc1039f | 6398 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 | 6399 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
49745b39 | 6400 | If WINDOW is omitted or nil, it defaults to the selected window. |
0cc1039f | 6401 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6402 | optional second arg PIXELS-P means value is measured in pixels. */) |
5842a27b | 6403 | (Lisp_Object window, Lisp_Object pixels_p) |
5500c422 | 6404 | { |
47004952 | 6405 | Lisp_Object result; |
1f76f6f5 MR |
6406 | struct window *w = decode_live_window (window); |
6407 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 6408 | |
5500c422 | 6409 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6410 | result = (NILP (pixels_p) |
6411 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6412 | : make_number (-w->vscroll)); | |
5500c422 | 6413 | else |
47004952 GM |
6414 | result = make_number (0); |
6415 | return result; | |
5500c422 GM |
6416 | } |
6417 | ||
6418 | ||
6419 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6420 | 2, 3, 0, |
fdb82f93 | 6421 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6422 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6423 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6424 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6425 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6426 | corresponds to an integral number of pixels. The return value is the | |
6427 | result of this rounding. | |
6428 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
5842a27b | 6429 | (Lisp_Object window, Lisp_Object vscroll, Lisp_Object pixels_p) |
5500c422 | 6430 | { |
1f76f6f5 MR |
6431 | struct window *w = decode_live_window (window); |
6432 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 6433 | |
b7826503 | 6434 | CHECK_NUMBER_OR_FLOAT (vscroll); |
177c0ea7 | 6435 | |
5500c422 GM |
6436 | if (FRAME_WINDOW_P (f)) |
6437 | { | |
6438 | int old_dy = w->vscroll; | |
177c0ea7 | 6439 | |
0cc1039f KS |
6440 | w->vscroll = - (NILP (pixels_p) |
6441 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6442 | : XFLOATINT (vscroll)); | |
47004952 | 6443 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6444 | |
e56263e5 KS |
6445 | if (w->vscroll != old_dy) |
6446 | { | |
6447 | /* Adjust glyph matrix of the frame if the virtual display | |
6448 | area becomes larger than before. */ | |
6449 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
6450 | adjust_glyphs (f); | |
177c0ea7 | 6451 | |
e56263e5 | 6452 | /* Prevent redisplay shortcuts. */ |
d3d50620 | 6453 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
e56263e5 | 6454 | } |
5500c422 | 6455 | } |
177c0ea7 | 6456 | |
0cc1039f | 6457 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 6458 | } |
177c0ea7 | 6459 | |
7bbb5782 GM |
6460 | \f |
6461 | /* Call FN for all leaf windows on frame F. FN is called with the | |
6462 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 6463 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 | 6464 | |
2f7c71a1 AS |
6465 | static void |
6466 | foreach_window (struct frame *f, int (*fn) (struct window *, void *), | |
6467 | void *user_data) | |
7bbb5782 | 6468 | { |
56f2de10 | 6469 | /* delete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
76fb556f YM |
6470 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) |
6471 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
6472 | } |
6473 | ||
6474 | ||
6475 | /* Helper function for foreach_window. Call FN for all leaf windows | |
6476 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 6477 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 6478 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 6479 | |
67492200 | 6480 | static int |
971de7fb | 6481 | foreach_window_1 (struct window *w, int (*fn) (struct window *, void *), void *user_data) |
7bbb5782 | 6482 | { |
67492200 | 6483 | int cont; |
177c0ea7 | 6484 | |
67492200 | 6485 | for (cont = 1; w && cont;) |
7bbb5782 | 6486 | { |
d3d50620 DA |
6487 | if (!NILP (w->hchild)) |
6488 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); | |
6489 | else if (!NILP (w->vchild)) | |
6490 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); | |
177c0ea7 | 6491 | else |
0f532a9a | 6492 | cont = fn (w, user_data); |
177c0ea7 | 6493 | |
d3d50620 | 6494 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
7bbb5782 | 6495 | } |
67492200 GM |
6496 | |
6497 | return cont; | |
7bbb5782 GM |
6498 | } |
6499 | ||
6500 | ||
6d194a45 | 6501 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 6502 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
6503 | the window start. */ |
6504 | ||
67492200 | 6505 | static int |
971de7fb | 6506 | freeze_window_start (struct window *w, void *freeze_p) |
7bbb5782 | 6507 | { |
08c1d235 SM |
6508 | if (MINI_WINDOW_P (w) |
6509 | || (WINDOWP (selected_window) /* Can be nil in corner cases. */ | |
6510 | && (w == XWINDOW (selected_window) | |
6511 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
6512 | && ! NILP (Vminibuf_scroll_window) | |
6513 | && w == XWINDOW (Vminibuf_scroll_window))))) | |
f95464e4 | 6514 | freeze_p = NULL; |
177c0ea7 | 6515 | |
f95464e4 | 6516 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 6517 | return 1; |
7bbb5782 GM |
6518 | } |
6519 | ||
6520 | ||
6521 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
6522 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
6523 | means freeze the window start. */ | |
6524 | ||
6525 | void | |
748fa866 | 6526 | freeze_window_starts (struct frame *f, bool freeze_p) |
7bbb5782 | 6527 | { |
cbccabec | 6528 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 6529 | } |
5500c422 GM |
6530 | |
6531 | \f | |
6532 | /*********************************************************************** | |
6533 | Initialization | |
6534 | ***********************************************************************/ | |
6535 | ||
6198ccd0 MR |
6536 | /* Return 1 if window configurations CONFIGURATION1 and CONFIGURATION2 |
6537 | describe the same state of affairs. This is used by Fequal. | |
6538 | ||
f75d7a91 | 6539 | IGNORE_POSITIONS means ignore non-matching scroll positions |
6198ccd0 MR |
6540 | and the like. |
6541 | ||
e4769531 | 6542 | This ignores a couple of things like the dedication status of |
b6f67890 MR |
6543 | window, combination_limit and the like. This might have to be |
6544 | fixed. */ | |
cbff28e8 | 6545 | |
f75d7a91 PE |
6546 | bool |
6547 | compare_window_configurations (Lisp_Object configuration1, | |
6548 | Lisp_Object configuration2, | |
6549 | bool ignore_positions) | |
cbff28e8 RS |
6550 | { |
6551 | register struct save_window_data *d1, *d2; | |
6198ccd0 | 6552 | struct Lisp_Vector *sws1, *sws2; |
71f02bc5 | 6553 | ptrdiff_t i; |
cbff28e8 | 6554 | |
6198ccd0 MR |
6555 | CHECK_WINDOW_CONFIGURATION (configuration1); |
6556 | CHECK_WINDOW_CONFIGURATION (configuration2); | |
6557 | ||
6558 | d1 = (struct save_window_data *) XVECTOR (configuration1); | |
6559 | d2 = (struct save_window_data *) XVECTOR (configuration2); | |
6560 | sws1 = XVECTOR (d1->saved_windows); | |
6561 | sws2 = XVECTOR (d2->saved_windows); | |
6562 | ||
6563 | /* Frame settings must match. */ | |
6564 | if (d1->frame_cols != d2->frame_cols | |
6565 | || d1->frame_lines != d2->frame_lines | |
6566 | || d1->frame_menu_bar_lines != d2->frame_menu_bar_lines | |
6567 | || !EQ (d1->selected_frame, d2->selected_frame) | |
6568 | || !EQ (d1->current_buffer, d2->current_buffer) | |
6569 | || (!ignore_positions | |
6570 | && (!EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window) | |
6571 | || !EQ (d1->minibuf_selected_window, d2->minibuf_selected_window))) | |
6572 | || !EQ (d1->focus_frame, d2->focus_frame) | |
6573 | /* Verify that the two configurations have the same number of windows. */ | |
6574 | || sws1->header.size != sws2->header.size) | |
cbff28e8 | 6575 | return 0; |
cbff28e8 | 6576 | |
6198ccd0 | 6577 | for (i = 0; i < sws1->header.size; i++) |
cbff28e8 | 6578 | { |
6198ccd0 | 6579 | struct saved_window *sw1, *sw2; |
cbff28e8 | 6580 | |
6198ccd0 MR |
6581 | sw1 = SAVED_WINDOW_N (sws1, i); |
6582 | sw2 = SAVED_WINDOW_N (sws2, i); | |
6583 | ||
6584 | if ( | |
6585 | /* The "current" windows in the two configurations must | |
6586 | correspond to each other. */ | |
6587 | EQ (d1->current_window, sw1->window) | |
6588 | != EQ (d2->current_window, sw2->window) | |
6589 | /* Windows' buffers must match. */ | |
6590 | || !EQ (sw1->buffer, sw2->buffer) | |
6591 | || !EQ (sw1->left_col, sw2->left_col) | |
6592 | || !EQ (sw1->top_line, sw2->top_line) | |
6593 | || !EQ (sw1->total_cols, sw2->total_cols) | |
6594 | || !EQ (sw1->total_lines, sw2->total_lines) | |
6595 | || !EQ (sw1->display_table, sw2->display_table) | |
6596 | /* The next two disjuncts check the window structure for | |
6597 | equality. */ | |
6598 | || !EQ (sw1->parent, sw2->parent) | |
6599 | || !EQ (sw1->prev, sw2->prev) | |
6600 | || (!ignore_positions | |
6601 | && (!EQ (sw1->hscroll, sw2->hscroll) | |
6602 | || !EQ (sw1->min_hscroll, sw2->min_hscroll) | |
6603 | || !EQ (sw1->start_at_line_beg, sw2->start_at_line_beg) | |
6604 | || NILP (Fequal (sw1->start, sw2->start)) | |
6605 | || NILP (Fequal (sw1->pointm, sw2->pointm)) | |
6606 | || NILP (Fequal (sw1->mark, sw2->mark)))) | |
6607 | || !EQ (sw1->left_margin_cols, sw2->left_margin_cols) | |
6608 | || !EQ (sw1->right_margin_cols, sw2->right_margin_cols) | |
6609 | || !EQ (sw1->left_fringe_width, sw2->left_fringe_width) | |
6610 | || !EQ (sw1->right_fringe_width, sw2->right_fringe_width) | |
6611 | || !EQ (sw1->fringes_outside_margins, sw2->fringes_outside_margins) | |
6612 | || !EQ (sw1->scroll_bar_width, sw2->scroll_bar_width) | |
6613 | || !EQ (sw1->vertical_scroll_bar_type, sw2->vertical_scroll_bar_type)) | |
949cf20f | 6614 | return 0; |
cbff28e8 RS |
6615 | } |
6616 | ||
6617 | return 1; | |
6618 | } | |
2f8274be RS |
6619 | |
6620 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
6621 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
6622 | doc: /* Compare two window configurations as regards the structure of windows. |
6623 | This function ignores details such as the values of point and mark | |
6624 | and scrolling positions. */) | |
5842a27b | 6625 | (Lisp_Object x, Lisp_Object y) |
2f8274be RS |
6626 | { |
6627 | if (compare_window_configurations (x, y, 1)) | |
6628 | return Qt; | |
6629 | return Qnil; | |
6630 | } | |
cbff28e8 | 6631 | \f |
dfcf069d | 6632 | void |
971de7fb | 6633 | init_window_once (void) |
7ab12479 | 6634 | { |
3224dac1 | 6635 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
6636 | XSETFRAME (selected_frame, f); |
6637 | Vterminal_frame = selected_frame; | |
e69b0960 DA |
6638 | minibuf_window = f->minibuffer_window; |
6639 | selected_window = f->selected_window; | |
1ae1a37d | 6640 | last_nonminibuf_frame = f; |
5b03d3c0 RS |
6641 | |
6642 | window_initialized = 1; | |
7ab12479 JB |
6643 | } |
6644 | ||
67492200 | 6645 | void |
971de7fb | 6646 | init_window (void) |
67492200 GM |
6647 | { |
6648 | Vwindow_list = Qnil; | |
6649 | } | |
6650 | ||
dfcf069d | 6651 | void |
971de7fb | 6652 | syms_of_window (void) |
7ab12479 | 6653 | { |
cd3520a4 JB |
6654 | DEFSYM (Qscroll_up, "scroll-up"); |
6655 | DEFSYM (Qscroll_down, "scroll-down"); | |
6656 | DEFSYM (Qscroll_command, "scroll-command"); | |
a4b000fb JL |
6657 | |
6658 | Fput (Qscroll_up, Qscroll_command, Qt); | |
6659 | Fput (Qscroll_down, Qscroll_command, Qt); | |
6660 | ||
cd3520a4 JB |
6661 | DEFSYM (Qwindow_configuration_change_hook, "window-configuration-change-hook"); |
6662 | DEFSYM (Qwindowp, "windowp"); | |
6663 | DEFSYM (Qwindow_configuration_p, "window-configuration-p"); | |
6664 | DEFSYM (Qwindow_live_p, "window-live-p"); | |
52162052 | 6665 | DEFSYM (Qwindow_valid_p, "window-valid-p"); |
cd3520a4 JB |
6666 | DEFSYM (Qwindow_deletable_p, "window-deletable-p"); |
6667 | DEFSYM (Qdelete_window, "delete-window"); | |
5386012d MR |
6668 | DEFSYM (Qwindow_resize_root_window, "window--resize-root-window"); |
6669 | DEFSYM (Qwindow_resize_root_window_vertically, "window--resize-root-window-vertically"); | |
cd3520a4 JB |
6670 | DEFSYM (Qsafe, "safe"); |
6671 | DEFSYM (Qdisplay_buffer, "display-buffer"); | |
6672 | DEFSYM (Qreplace_buffer_in_windows, "replace-buffer-in-windows"); | |
6673 | DEFSYM (Qrecord_window_buffer, "record-window-buffer"); | |
6674 | DEFSYM (Qget_mru_window, "get-mru-window"); | |
5938d519 | 6675 | DEFSYM (Qwindow_size, "window-size"); |
cd3520a4 JB |
6676 | DEFSYM (Qtemp_buffer_show_hook, "temp-buffer-show-hook"); |
6677 | DEFSYM (Qabove, "above"); | |
6678 | DEFSYM (Qbelow, "below"); | |
6a6ee00d | 6679 | DEFSYM (Qclone_of, "clone-of"); |
b9e809c2 | 6680 | |
67492200 | 6681 | staticpro (&Vwindow_list); |
8bfb170b KS |
6682 | |
6683 | minibuf_selected_window = Qnil; | |
3dbab091 | 6684 | staticpro (&minibuf_selected_window); |
67492200 | 6685 | |
c876b227 | 6686 | window_scroll_pixel_based_preserve_x = -1; |
66fe93d1 | 6687 | window_scroll_pixel_based_preserve_y = -1; |
c876b227 SM |
6688 | window_scroll_preserve_hpos = -1; |
6689 | window_scroll_preserve_vpos = -1; | |
66d43aea | 6690 | |
29208e82 | 6691 | DEFVAR_LISP ("temp-buffer-show-function", Vtemp_buffer_show_function, |
fdb82f93 PJ |
6692 | doc: /* Non-nil means call as function to display a help buffer. |
6693 | The function is called with one argument, the buffer to be displayed. | |
6694 | Used by `with-output-to-temp-buffer'. | |
6695 | If this function is used, then it must do the entire job of showing | |
6696 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 | 6697 | Vtemp_buffer_show_function = Qnil; |
e10ac9f1 | 6698 | |
29208e82 | 6699 | DEFVAR_LISP ("minibuffer-scroll-window", Vminibuf_scroll_window, |
fdb82f93 | 6700 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
6701 | Vminibuf_scroll_window = Qnil; |
6702 | ||
29208e82 | 6703 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", mode_line_in_non_selected_windows, |
26124d5e | 6704 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
6705 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
6706 | is displayed in the `mode-line' face. */); | |
6707 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 6708 | |
29208e82 | 6709 | DEFVAR_LISP ("other-window-scroll-buffer", Vother_window_scroll_buffer, |
fdb82f93 | 6710 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
6711 | Vother_window_scroll_buffer = Qnil; |
6712 | ||
29208e82 | 6713 | DEFVAR_BOOL ("auto-window-vscroll", auto_window_vscroll_p, |
e10ac9f1 | 6714 | doc: /* Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); |
e56263e5 KS |
6715 | auto_window_vscroll_p = 1; |
6716 | ||
29208e82 | 6717 | DEFVAR_INT ("next-screen-context-lines", next_screen_context_lines, |
e10ac9f1 | 6718 | doc: /* Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
6719 | next_screen_context_lines = 2; |
6720 | ||
5500c422 | 6721 | DEFVAR_LISP ("scroll-preserve-screen-position", |
29208e82 | 6722 | Vscroll_preserve_screen_position, |
e10ac9f1 | 6723 | doc: /* Controls if scroll commands move point to keep its screen position unchanged. |
bdf4ec93 RS |
6724 | A value of nil means point does not keep its screen position except |
6725 | at the scroll margin or window boundary respectively. | |
6726 | A value of t means point keeps its screen position if the scroll | |
6727 | command moved it vertically out of the window, e.g. when scrolling | |
6728 | by full screens. | |
9013a7f8 | 6729 | Any other value means point always keeps its screen position. |
a4b000fb JL |
6730 | Scroll commands should have the `scroll-command' property |
6731 | on their symbols to be controlled by this variable. */); | |
5500c422 | 6732 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 6733 | |
29208e82 | 6734 | DEFVAR_LISP ("window-point-insertion-type", Vwindow_point_insertion_type, |
a1562258 SM |
6735 | doc: /* Type of marker to use for `window-point'. */); |
6736 | Vwindow_point_insertion_type = Qnil; | |
6737 | ||
543f5fb1 | 6738 | DEFVAR_LISP ("window-configuration-change-hook", |
29208e82 | 6739 | Vwindow_configuration_change_hook, |
fdb82f93 | 6740 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
6741 | The buffer-local part is run once per window, with the relevant window |
6742 | selected; while the global part is run only once for the modified frame, | |
6743 | with the relevant frame selected. */); | |
543f5fb1 RS |
6744 | Vwindow_configuration_change_hook = Qnil; |
6745 | ||
29208e82 | 6746 | DEFVAR_LISP ("recenter-redisplay", Vrecenter_redisplay, |
61d4b438 MR |
6747 | doc: /* Non-nil means `recenter' redraws entire frame. |
6748 | If this option is non-nil, then the `recenter' command with a nil | |
6749 | argument will redraw the entire frame; the special value `tty' causes | |
6750 | the frame to be redrawn only if it is a tty frame. */); | |
666e158e MB |
6751 | Vrecenter_redisplay = Qtty; |
6752 | ||
a0c2d0ae | 6753 | DEFVAR_LISP ("window-combination-resize", Vwindow_combination_resize, |
454592a6 | 6754 | doc: /* If t, resize window combinations proportionally. |
1a13852e | 6755 | If this variable is nil, splitting a window gets the entire screen space |
a0c2d0ae | 6756 | for displaying the new window from the window to split. Deleting and |
df85d315 | 6757 | resizing a window preferably resizes one adjacent window only. |
a0c2d0ae | 6758 | |
454592a6 | 6759 | If this variable is t, splitting a window tries to get the space |
a0c2d0ae MR |
6760 | proportionally from all windows in the same combination. This also |
6761 | allows to split a window that is otherwise too small or of fixed size. | |
6762 | Resizing and deleting a window proportionally resize all windows in the | |
6763 | same combination. | |
1a13852e | 6764 | |
454592a6 MR |
6765 | Other values are reserved for future use. |
6766 | ||
9fc9a531 AH |
6767 | This variable takes no effect if the variable `window-combination-limit' is |
6768 | non-nil. */); | |
a0c2d0ae | 6769 | Vwindow_combination_resize = Qnil; |
1a13852e | 6770 | |
b6f67890 | 6771 | DEFVAR_LISP ("window-combination-limit", Vwindow_combination_limit, |
8e17c9ba MR |
6772 | doc: /* If non-nil, splitting a window makes a new parent window. |
6773 | The following values are recognized: | |
1a13852e | 6774 | |
8e17c9ba | 6775 | nil means splitting a window will create a new parent window only if the |
5938d519 MR |
6776 | window has no parent window or the window shall become part of a |
6777 | combination orthogonal to the one it is part of. | |
1a13852e | 6778 | |
5938d519 MR |
6779 | `window-size' means that splitting a window for displaying a buffer |
6780 | makes a new parent window provided `display-buffer' is supposed to | |
6781 | explicitly set the window's size due to the presence of a | |
6782 | `window-height' or `window-width' entry in the alist used by | |
6783 | `display-buffer'. Otherwise, this value is handled like nil. | |
8e17c9ba MR |
6784 | |
6785 | `temp-buffer' means that splitting a window for displaying a temporary | |
6786 | buffer always makes a new parent window. Otherwise, this value is | |
6787 | handled like nil. | |
6788 | ||
8e17c9ba MR |
6789 | `display-buffer' means that splitting a window for displaying a buffer |
6790 | always makes a new parent window. Since temporary buffers are | |
6791 | displayed by the function `display-buffer', this value is stronger | |
6792 | than `temp-buffer'. Splitting a window for other purpose makes a | |
6793 | new parent window only if needed. | |
6794 | ||
6795 | t means that splitting a window always creates a new parent window. If | |
6796 | all splits behave this way, each frame's window tree is a binary | |
6797 | tree and every window but the frame's root window has exactly one | |
6798 | sibling. | |
1a13852e | 6799 | |
8e17c9ba | 6800 | Other values are reserved for future use. */); |
5938d519 | 6801 | Vwindow_combination_limit = Qwindow_size; |
666e158e | 6802 | |
6a6ee00d MR |
6803 | DEFVAR_LISP ("window-persistent-parameters", Vwindow_persistent_parameters, |
6804 | doc: /* Alist of persistent window parameters. | |
34a02f46 MR |
6805 | This alist specifies which window parameters shall get saved by |
6806 | `current-window-configuration' and `window-state-get' and subsequently | |
6807 | restored to their previous values by `set-window-configuration' and | |
6808 | `window-state-put'. | |
6a6ee00d MR |
6809 | |
6810 | The car of each entry of this alist is the symbol specifying the | |
6811 | parameter. The cdr is one of the following: | |
6812 | ||
34a02f46 MR |
6813 | nil means the parameter is neither saved by `window-state-get' nor by |
6814 | `current-window-configuration'. | |
6a6ee00d | 6815 | |
34a02f46 MR |
6816 | t means the parameter is saved by `current-window-configuration' and, |
6817 | provided its WRITABLE argument is nil, by `window-state-get'. | |
6a6ee00d | 6818 | |
34a02f46 MR |
6819 | The symbol `writable' means the parameter is saved unconditionally by |
6820 | both `current-window-configuration' and `window-state-get'. Do not use | |
6821 | this value for parameters without read syntax (like windows or frames). | |
6a6ee00d MR |
6822 | |
6823 | Parameters not saved by `current-window-configuration' or | |
6824 | `window-state-get' are left alone by `set-window-configuration' | |
6825 | respectively are not installed by `window-state-put'. */); | |
34a02f46 | 6826 | Vwindow_persistent_parameters = list1 (Fcons (Qclone_of, Qt)); |
6a6ee00d | 6827 | |
7ab12479 JB |
6828 | defsubr (&Sselected_window); |
6829 | defsubr (&Sminibuffer_window); | |
6830 | defsubr (&Swindow_minibuffer_p); | |
6831 | defsubr (&Swindowp); | |
52162052 | 6832 | defsubr (&Swindow_valid_p); |
806b4d9b | 6833 | defsubr (&Swindow_live_p); |
727e958e MR |
6834 | defsubr (&Swindow_frame); |
6835 | defsubr (&Sframe_root_window); | |
6836 | defsubr (&Sframe_first_window); | |
6837 | defsubr (&Sframe_selected_window); | |
6838 | defsubr (&Sset_frame_selected_window); | |
7ab12479 | 6839 | defsubr (&Spos_visible_in_window_p); |
536833ab | 6840 | defsubr (&Swindow_line_height); |
7ab12479 | 6841 | defsubr (&Swindow_buffer); |
bf60a96b | 6842 | defsubr (&Swindow_parent); |
d68443dc MR |
6843 | defsubr (&Swindow_top_child); |
6844 | defsubr (&Swindow_left_child); | |
6845 | defsubr (&Swindow_next_sibling); | |
6846 | defsubr (&Swindow_prev_sibling); | |
b6f67890 MR |
6847 | defsubr (&Swindow_combination_limit); |
6848 | defsubr (&Sset_window_combination_limit); | |
abde8f8c MR |
6849 | defsubr (&Swindow_use_time); |
6850 | defsubr (&Swindow_top_line); | |
6851 | defsubr (&Swindow_left_column); | |
105216ed CY |
6852 | defsubr (&Swindow_total_height); |
6853 | defsubr (&Swindow_total_width); | |
496e208e MR |
6854 | defsubr (&Swindow_normal_size); |
6855 | defsubr (&Swindow_new_total); | |
6856 | defsubr (&Swindow_new_normal); | |
6857 | defsubr (&Sset_window_new_total); | |
6858 | defsubr (&Sset_window_new_normal); | |
d615d6d2 | 6859 | defsubr (&Swindow_resize_apply); |
105216ed CY |
6860 | defsubr (&Swindow_body_height); |
6861 | defsubr (&Swindow_body_width); | |
7ab12479 JB |
6862 | defsubr (&Swindow_hscroll); |
6863 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
6864 | defsubr (&Swindow_redisplay_end_trigger); |
6865 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 6866 | defsubr (&Swindow_edges); |
c99a9eb3 | 6867 | defsubr (&Swindow_pixel_edges); |
9d5405ec | 6868 | defsubr (&Swindow_absolute_pixel_edges); |
c99a9eb3 RS |
6869 | defsubr (&Swindow_inside_edges); |
6870 | defsubr (&Swindow_inside_pixel_edges); | |
9d5405ec | 6871 | defsubr (&Swindow_inside_absolute_pixel_edges); |
d5783c40 JB |
6872 | defsubr (&Scoordinates_in_window_p); |
6873 | defsubr (&Swindow_at); | |
7ab12479 JB |
6874 | defsubr (&Swindow_point); |
6875 | defsubr (&Swindow_start); | |
6876 | defsubr (&Swindow_end); | |
6877 | defsubr (&Sset_window_point); | |
6878 | defsubr (&Sset_window_start); | |
6879 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 6880 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
6881 | defsubr (&Swindow_display_table); |
6882 | defsubr (&Sset_window_display_table); | |
6883 | defsubr (&Snext_window); | |
6884 | defsubr (&Sprevious_window); | |
7ab12479 | 6885 | defsubr (&Sget_buffer_window); |
1a13852e MR |
6886 | defsubr (&Sdelete_other_windows_internal); |
6887 | defsubr (&Sdelete_window_internal); | |
6888 | defsubr (&Sresize_mini_window_internal); | |
7ab12479 | 6889 | defsubr (&Sset_window_buffer); |
1a13852e | 6890 | defsubr (&Srun_window_configuration_change_hook); |
7ab12479 | 6891 | defsubr (&Sselect_window); |
6b61353c | 6892 | defsubr (&Sforce_window_update); |
1a13852e | 6893 | defsubr (&Ssplit_window_internal); |
7ab12479 JB |
6894 | defsubr (&Sscroll_up); |
6895 | defsubr (&Sscroll_down); | |
6896 | defsubr (&Sscroll_left); | |
6897 | defsubr (&Sscroll_right); | |
ccd0664b | 6898 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 6899 | defsubr (&Sscroll_other_window); |
fa832261 | 6900 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 6901 | defsubr (&Srecenter); |
81fe0836 | 6902 | defsubr (&Swindow_text_height); |
7ab12479 JB |
6903 | defsubr (&Smove_to_window_line); |
6904 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 6905 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
6906 | defsubr (&Sset_window_configuration); |
6907 | defsubr (&Scurrent_window_configuration); | |
5500c422 GM |
6908 | defsubr (&Sset_window_margins); |
6909 | defsubr (&Swindow_margins); | |
949cf20f KS |
6910 | defsubr (&Sset_window_fringes); |
6911 | defsubr (&Swindow_fringes); | |
6912 | defsubr (&Sset_window_scroll_bars); | |
6913 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
6914 | defsubr (&Swindow_vscroll); |
6915 | defsubr (&Sset_window_vscroll); | |
2f8274be | 6916 | defsubr (&Scompare_window_configurations); |
67492200 | 6917 | defsubr (&Swindow_list); |
abde8f8c | 6918 | defsubr (&Swindow_list_1); |
496e208e MR |
6919 | defsubr (&Swindow_prev_buffers); |
6920 | defsubr (&Sset_window_prev_buffers); | |
6921 | defsubr (&Swindow_next_buffers); | |
6922 | defsubr (&Sset_window_next_buffers); | |
cfbb2395 JB |
6923 | defsubr (&Swindow_parameters); |
6924 | defsubr (&Swindow_parameter); | |
6925 | defsubr (&Sset_window_parameter); | |
7ab12479 JB |
6926 | } |
6927 | ||
dfcf069d | 6928 | void |
971de7fb | 6929 | keys_of_window (void) |
7ab12479 | 6930 | { |
7ab12479 JB |
6931 | initial_define_key (control_x_map, '<', "scroll-left"); |
6932 | initial_define_key (control_x_map, '>', "scroll-right"); | |
6933 | ||
32129746 | 6934 | initial_define_key (global_map, Ctl ('V'), "scroll-up-command"); |
7ab12479 | 6935 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); |
32129746 | 6936 | initial_define_key (meta_map, 'v', "scroll-down-command"); |
7ab12479 | 6937 | } |