Commit | Line | Data |
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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
37962e60 | 3 | Copyright (C) 1985, 86, 87, 93, 94, 95, 96 Free Software Foundation, Inc. |
7ab12479 JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
1113d9db | 9 | the Free Software Foundation; either version 2, or (at your option) |
7ab12479 JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
7ab12479 | 21 | |
18160b98 | 22 | #include <config.h> |
7ab12479 JB |
23 | #include "lisp.h" |
24 | #include "buffer.h" | |
44fa5b1e | 25 | #include "frame.h" |
7ab12479 JB |
26 | #include "window.h" |
27 | #include "commands.h" | |
28 | #include "indent.h" | |
29 | #include "termchar.h" | |
30 | #include "disptab.h" | |
f8026fd8 | 31 | #include "keyboard.h" |
7ab12479 | 32 | |
806b4d9b | 33 | Lisp_Object Qwindowp, Qwindow_live_p; |
7ab12479 JB |
34 | |
35 | Lisp_Object Fnext_window (), Fdelete_window (), Fselect_window (); | |
36 | Lisp_Object Fset_window_buffer (), Fsplit_window (), Frecenter (); | |
37 | ||
fd482be5 | 38 | void delete_all_subwindows (); |
7ab12479 JB |
39 | static struct window *decode_window(); |
40 | ||
41 | /* This is the window in which the terminal's cursor should | |
42 | be left when nothing is being done with it. This must | |
43 | always be a leaf window, and its buffer is selected by | |
44 | the top level editing loop at the end of each command. | |
45 | ||
46 | This value is always the same as | |
44fa5b1e | 47 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
48 | |
49 | Lisp_Object selected_window; | |
50 | ||
44fa5b1e | 51 | /* The minibuffer window of the selected frame. |
7ab12479 JB |
52 | Note that you cannot test for minibufferness of an arbitrary window |
53 | by comparing against this; but you can test for minibufferness of | |
54 | the selected window. */ | |
55 | Lisp_Object minibuf_window; | |
56 | ||
57 | /* Non-nil means it is the window for C-M-v to scroll | |
58 | when the minibuffer is selected. */ | |
59 | Lisp_Object Vminibuf_scroll_window; | |
60 | ||
61 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
62 | Lisp_Object Vother_window_scroll_buffer; | |
63 | ||
7ab12479 JB |
64 | /* Non-nil means it's function to call to display temp buffers. */ |
65 | Lisp_Object Vtemp_buffer_show_function; | |
66 | ||
67 | /* If a window gets smaller than either of these, it is removed. */ | |
68 | int window_min_height; | |
69 | int window_min_width; | |
70 | ||
71 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
72 | int pop_up_windows; | |
73 | ||
44fa5b1e JB |
74 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
75 | int pop_up_frames; | |
7ab12479 JB |
76 | |
77 | /* Non-nil means use this function instead of default */ | |
44fa5b1e | 78 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
79 | |
80 | /* Function to call to handle Fdisplay_buffer. */ | |
81 | Lisp_Object Vdisplay_buffer_function; | |
82 | ||
a90712c2 RS |
83 | /* List of buffer *names* for buffers that should have their own frames. */ |
84 | Lisp_Object Vspecial_display_buffer_names; | |
85 | ||
86 | /* List of regexps for buffer names that should have their own frames. */ | |
87 | Lisp_Object Vspecial_display_regexps; | |
88 | ||
89 | /* Function to pop up a special frame. */ | |
90 | Lisp_Object Vspecial_display_function; | |
91 | ||
855d8627 RS |
92 | /* List of buffer *names* for buffers to appear in selected window. */ |
93 | Lisp_Object Vsame_window_buffer_names; | |
94 | ||
95 | /* List of regexps for buffer names to appear in selected window. */ | |
96 | Lisp_Object Vsame_window_regexps; | |
97 | ||
a58ec57d RS |
98 | /* Hook run at end of temp_output_buffer_show. */ |
99 | Lisp_Object Qtemp_buffer_show_hook; | |
100 | ||
37962e60 | 101 | /* Fdisplay_buffer always splits the largest window |
7ab12479 JB |
102 | if that window is more than this high. */ |
103 | int split_height_threshold; | |
104 | ||
105 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
106 | int next_screen_context_lines; | |
107 | ||
108 | /* Incremented for each window created. */ | |
109 | static int sequence_number; | |
110 | ||
5b03d3c0 RS |
111 | /* Nonzero after init_window_once has finished. */ |
112 | static int window_initialized; | |
113 | ||
7ab12479 | 114 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
dba06815 RS |
115 | |
116 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; | |
7ab12479 JB |
117 | \f |
118 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
413430c5 EN |
119 | "Returns t if OBJECT is a window.") |
120 | (object) | |
121 | Lisp_Object object; | |
7ab12479 | 122 | { |
413430c5 | 123 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
124 | } |
125 | ||
806b4d9b | 126 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
413430c5 EN |
127 | "Returns t if OBJECT is a window which is currently visible.") |
128 | (object) | |
129 | Lisp_Object object; | |
605be8af | 130 | { |
413430c5 | 131 | return (WINDOWP (object) && ! NILP (XWINDOW (object)->buffer) ? Qt : Qnil); |
605be8af JB |
132 | } |
133 | ||
7ab12479 JB |
134 | Lisp_Object |
135 | make_window () | |
136 | { | |
cffec418 | 137 | Lisp_Object val; |
7ab12479 | 138 | register struct window *p; |
cffec418 KH |
139 | register struct Lisp_Vector *vec; |
140 | int i; | |
141 | ||
142 | vec = allocate_vectorlike ((EMACS_INT) VECSIZE (struct window)); | |
143 | for (i = 0; i < VECSIZE (struct window); i++) | |
144 | vec->contents[i] = Qnil; | |
145 | vec->size = VECSIZE (struct window); | |
146 | p = (struct window *)vec; | |
d834a2e9 KH |
147 | XSETFASTINT (p->sequence_number, ++sequence_number); |
148 | XSETFASTINT (p->left, 0); | |
149 | XSETFASTINT (p->top, 0); | |
150 | XSETFASTINT (p->height, 0); | |
151 | XSETFASTINT (p->width, 0); | |
152 | XSETFASTINT (p->hscroll, 0); | |
153 | XSETFASTINT (p->last_point_x, 0); | |
154 | XSETFASTINT (p->last_point_y, 0); | |
7ab12479 JB |
155 | p->start = Fmake_marker (); |
156 | p->pointm = Fmake_marker (); | |
d834a2e9 | 157 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 158 | p->frame = Qnil; |
7ab12479 JB |
159 | p->display_table = Qnil; |
160 | p->dedicated = Qnil; | |
cffec418 | 161 | XSETWINDOW (val, p); |
7ab12479 JB |
162 | return val; |
163 | } | |
164 | ||
165 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
166 | "Return the window that the cursor now appears in and commands apply to.") | |
167 | () | |
168 | { | |
169 | return selected_window; | |
170 | } | |
171 | ||
83762ba4 JB |
172 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
173 | "Return the window used now for minibuffers.\n\ | |
174 | If the optional argument FRAME is specified, return the minibuffer window\n\ | |
175 | used by that frame.") | |
176 | (frame) | |
177 | Lisp_Object frame; | |
7ab12479 | 178 | { |
83762ba4 | 179 | if (NILP (frame)) |
74112613 | 180 | XSETFRAME (frame, selected_frame); |
83762ba4 JB |
181 | else |
182 | CHECK_LIVE_FRAME (frame, 0); | |
83762ba4 JB |
183 | |
184 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); | |
7ab12479 JB |
185 | } |
186 | ||
605be8af | 187 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
7ab12479 JB |
188 | "Returns non-nil if WINDOW is a minibuffer window.") |
189 | (window) | |
190 | Lisp_Object window; | |
191 | { | |
192 | struct window *w = decode_window (window); | |
193 | return (MINI_WINDOW_P (w) ? Qt : Qnil); | |
194 | } | |
195 | ||
196 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, | |
197 | Spos_visible_in_window_p, 0, 2, 0, | |
44fa5b1e | 198 | "Return t if position POS is currently on the frame in WINDOW.\n\ |
7ab12479 JB |
199 | Returns nil if that position is scrolled vertically out of view.\n\ |
200 | POS defaults to point; WINDOW, to the selected window.") | |
201 | (pos, window) | |
202 | Lisp_Object pos, window; | |
203 | { | |
204 | register struct window *w; | |
205 | register int top; | |
206 | register int height; | |
207 | register int posint; | |
208 | register struct buffer *buf; | |
209 | struct position posval; | |
afdb2485 | 210 | int hscroll; |
7ab12479 | 211 | |
265a9e55 | 212 | if (NILP (pos)) |
5ce7b543 | 213 | posint = PT; |
7ab12479 JB |
214 | else |
215 | { | |
216 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
217 | posint = XINT (pos); | |
218 | } | |
219 | ||
605be8af | 220 | w = decode_window (window); |
7ab12479 | 221 | top = marker_position (w->start); |
afdb2485 | 222 | hscroll = XINT (w->hscroll); |
7ab12479 JB |
223 | |
224 | if (posint < top) | |
225 | return Qnil; | |
226 | ||
227 | height = XFASTINT (w->height) - ! MINI_WINDOW_P (w); | |
228 | ||
229 | buf = XBUFFER (w->buffer); | |
3cd21523 RS |
230 | if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf) |
231 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (buf)) | |
7ab12479 | 232 | { |
44fa5b1e | 233 | /* If frame is up to date, |
7ab12479 JB |
234 | use the info recorded about how much text fit on it. */ |
235 | if (posint < BUF_Z (buf) - XFASTINT (w->window_end_pos) | |
236 | || (XFASTINT (w->window_end_vpos) < height)) | |
237 | return Qt; | |
238 | return Qnil; | |
239 | } | |
240 | else | |
241 | { | |
33eb4ede | 242 | if (posint > BUF_ZV (buf)) |
7ab12479 JB |
243 | return Qnil; |
244 | ||
61b5322b RS |
245 | /* w->start can be out of range. If it is, do something reasonable. */ |
246 | if (top < BUF_BEGV (buf) || top > BUF_ZV (buf)) | |
247 | return Qnil; | |
248 | ||
7ab12479 | 249 | /* If that info is not correct, calculate afresh */ |
4efffd80 | 250 | posval = *compute_motion (top, 0, (hscroll ? 1 - hscroll : 0), 0, |
afdb2485 | 251 | posint, height, 0, |
535e0b8e | 252 | window_internal_width (w) - 1, |
e37f06d7 | 253 | hscroll, 0, w); |
7ab12479 JB |
254 | |
255 | return posval.vpos < height ? Qt : Qnil; | |
256 | } | |
257 | } | |
258 | \f | |
259 | static struct window * | |
260 | decode_window (window) | |
261 | register Lisp_Object window; | |
262 | { | |
265a9e55 | 263 | if (NILP (window)) |
7ab12479 JB |
264 | return XWINDOW (selected_window); |
265 | ||
605be8af | 266 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
267 | return XWINDOW (window); |
268 | } | |
269 | ||
270 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, | |
271 | "Return the buffer that WINDOW is displaying.") | |
272 | (window) | |
273 | Lisp_Object window; | |
274 | { | |
275 | return decode_window (window)->buffer; | |
276 | } | |
277 | ||
278 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
279 | "Return the number of lines in WINDOW (including its mode line).") | |
280 | (window) | |
281 | Lisp_Object window; | |
282 | { | |
283 | return decode_window (window)->height; | |
284 | } | |
285 | ||
286 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
3b5908ef RS |
287 | "Return the number of display columns in WINDOW.\n\ |
288 | This is the width that is usable columns available for text in WINDOW.\n\ | |
289 | If you want to find out how many columns WINDOW takes up,\n\ | |
290 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))).") | |
7ab12479 JB |
291 | (window) |
292 | Lisp_Object window; | |
293 | { | |
ee61d94e | 294 | return make_number (window_internal_width (decode_window (window))); |
7ab12479 JB |
295 | } |
296 | ||
297 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
298 | "Return the number of columns by which WINDOW is scrolled from left margin.") | |
299 | (window) | |
300 | Lisp_Object window; | |
301 | { | |
302 | return decode_window (window)->hscroll; | |
303 | } | |
304 | ||
305 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
306 | "Set number of columns WINDOW is scrolled from left margin to NCOL.\n\ | |
307 | NCOL should be zero or positive.") | |
308 | (window, ncol) | |
309 | register Lisp_Object window, ncol; | |
310 | { | |
311 | register struct window *w; | |
312 | ||
313 | CHECK_NUMBER (ncol, 1); | |
d834a2e9 | 314 | if (XINT (ncol) < 0) XSETFASTINT (ncol, 0); |
7ab12479 | 315 | w = decode_window (window); |
7f4161e0 | 316 | if (XINT (w->hscroll) != XINT (ncol)) |
1479ef51 | 317 | XBUFFER (w->buffer)->clip_changed = 1; /* Prevent redisplay shortcuts */ |
7ab12479 JB |
318 | w->hscroll = ncol; |
319 | return ncol; | |
320 | } | |
321 | ||
190eb263 RS |
322 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
323 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
324 | "Return WINDOW's redisplay end trigger value.\n\ | |
325 | See `set-window-redisplay-end-trigger' for more information.") | |
326 | (window) | |
327 | Lisp_Object window; | |
328 | { | |
329 | return decode_window (window)->redisplay_end_trigger; | |
330 | } | |
331 | ||
332 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
333 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
334 | "Set WINDOW's redisplay end trigger value to VALUE.\n\ | |
335 | VALUE should be a buffer position (typically a marker) or nil.\n\ | |
76854cf2 RS |
336 | If it is a buffer position, then if redisplay in WINDOW reaches a position\n\ |
337 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called\n\ | |
338 | with two arguments: WINDOW, and the end trigger value.\n\ | |
339 | Afterwards the end-trigger value is reset to nil.") | |
190eb263 RS |
340 | (window, value) |
341 | register Lisp_Object window, value; | |
342 | { | |
343 | register struct window *w; | |
344 | ||
345 | w = decode_window (window); | |
346 | w->redisplay_end_trigger = value; | |
347 | return value; | |
348 | } | |
349 | ||
7ab12479 JB |
350 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
351 | "Return a list of the edge coordinates of WINDOW.\n\ | |
44fa5b1e | 352 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.\n\ |
7ab12479 JB |
353 | RIGHT is one more than the rightmost column used by WINDOW,\n\ |
354 | and BOTTOM is one more than the bottommost row used by WINDOW\n\ | |
355 | and its mode-line.") | |
356 | (window) | |
357 | Lisp_Object window; | |
358 | { | |
359 | register struct window *w = decode_window (window); | |
360 | ||
361 | return Fcons (w->left, Fcons (w->top, | |
111e5992 | 362 | Fcons (make_number (WINDOW_RIGHT_EDGE (w)), |
7ab12479 JB |
363 | Fcons (make_number (XFASTINT (w->top) |
364 | + XFASTINT (w->height)), | |
365 | Qnil)))); | |
366 | } | |
367 | ||
d5783c40 JB |
368 | /* Test if the character at column *x, row *y is within window *w. |
369 | If it is not, return 0; | |
370 | if it is in the window's text area, | |
371 | set *x and *y to its location relative to the upper left corner | |
372 | of the window, and | |
373 | return 1; | |
374 | if it is on the window's modeline, return 2; | |
375 | if it is on the border between the window and its right sibling, | |
376 | return 3. */ | |
377 | static int | |
378 | coordinates_in_window (w, x, y) | |
379 | register struct window *w; | |
380 | register int *x, *y; | |
381 | { | |
382 | register int left = XINT (w->left); | |
111e5992 RS |
383 | register int right_edge = WINDOW_RIGHT_EDGE (w); |
384 | register int left_margin = WINDOW_LEFT_MARGIN (w); | |
385 | register int right_margin = WINDOW_RIGHT_MARGIN (w); | |
d5783c40 JB |
386 | register int window_height = XINT (w->height); |
387 | register int top = XFASTINT (w->top); | |
111e5992 RS |
388 | |
389 | if ( *x < left || *x >= right_edge | |
d5783c40 JB |
390 | || *y < top || *y >= top + window_height) |
391 | return 0; | |
392 | ||
111e5992 RS |
393 | if (left_margin != left && *x < left_margin && *x >= left) |
394 | return 3; | |
395 | ||
396 | if (right_margin != right_edge && *x >= right_margin && *x < right_edge) | |
397 | return 3; | |
398 | ||
d5783c40 JB |
399 | /* Is the character is the mode line? */ |
400 | if (*y == top + window_height - 1 | |
05c2896a | 401 | && ! MINI_WINDOW_P (w)) |
d5783c40 | 402 | return 2; |
37962e60 | 403 | |
111e5992 | 404 | *x -= WINDOW_LEFT_MARGIN (w); |
d5783c40 JB |
405 | *y -= top; |
406 | return 1; | |
407 | } | |
408 | ||
409 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, | |
410 | Scoordinates_in_window_p, 2, 2, 0, | |
411 | "Return non-nil if COORDINATES are in WINDOW.\n\ | |
1113d9db | 412 | COORDINATES is a cons of the form (X . Y), X and Y being distances\n\ |
44fa5b1e | 413 | measured in characters from the upper-left corner of the frame.\n\ |
1113d9db | 414 | (0 . 0) denotes the character in the upper left corner of the\n\ |
44fa5b1e | 415 | frame.\n\ |
d5783c40 JB |
416 | If COORDINATES are in the text portion of WINDOW,\n\ |
417 | the coordinates relative to the window are returned.\n\ | |
e5d77022 | 418 | If they are in the mode line of WINDOW, `mode-line' is returned.\n\ |
d5783c40 | 419 | If they are on the border between WINDOW and its right sibling,\n\ |
e5d77022 | 420 | `vertical-line' is returned.") |
d5783c40 JB |
421 | (coordinates, window) |
422 | register Lisp_Object coordinates, window; | |
423 | { | |
424 | int x, y; | |
425 | ||
605be8af | 426 | CHECK_LIVE_WINDOW (window, 0); |
d5783c40 JB |
427 | CHECK_CONS (coordinates, 1); |
428 | x = XINT (Fcar (coordinates)); | |
429 | y = XINT (Fcdr (coordinates)); | |
430 | ||
431 | switch (coordinates_in_window (XWINDOW (window), &x, &y)) | |
432 | { | |
433 | case 0: /* NOT in window at all. */ | |
434 | return Qnil; | |
435 | ||
436 | case 1: /* In text part of window. */ | |
437 | return Fcons (x, y); | |
438 | ||
439 | case 2: /* In mode line of window. */ | |
440 | return Qmode_line; | |
37962e60 | 441 | |
d5783c40 | 442 | case 3: /* On right border of window. */ |
e5d77022 | 443 | return Qvertical_line; |
d5783c40 JB |
444 | |
445 | default: | |
446 | abort (); | |
447 | } | |
448 | } | |
449 | ||
7ab12479 | 450 | /* Find the window containing column x, row y, and return it as a |
d5783c40 JB |
451 | Lisp_Object. If x, y is on the window's modeline, set *part |
452 | to 1; if it is on the separating line between the window and its | |
453 | right sibling, set it to 2; otherwise set it to 0. If there is no | |
454 | window under x, y return nil and leave *part unmodified. */ | |
7ab12479 | 455 | Lisp_Object |
44fa5b1e JB |
456 | window_from_coordinates (frame, x, y, part) |
457 | FRAME_PTR frame; | |
7ab12479 | 458 | int x, y; |
d5783c40 | 459 | int *part; |
7ab12479 JB |
460 | { |
461 | register Lisp_Object tem, first; | |
462 | ||
44fa5b1e | 463 | tem = first = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 464 | |
d5783c40 | 465 | do |
7ab12479 JB |
466 | { |
467 | int found = coordinates_in_window (XWINDOW (tem), &x, &y); | |
468 | ||
469 | if (found) | |
470 | { | |
d5783c40 | 471 | *part = found - 1; |
7ab12479 JB |
472 | return tem; |
473 | } | |
474 | ||
d5783c40 | 475 | tem = Fnext_window (tem, Qt, Qlambda); |
7ab12479 | 476 | } |
d5783c40 | 477 | while (! EQ (tem, first)); |
37962e60 | 478 | |
d5783c40 | 479 | return Qnil; |
7ab12479 JB |
480 | } |
481 | ||
ab17c3f2 | 482 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
b0c33a94 | 483 | "Return window containing coordinates X and Y on FRAME.\n\ |
44fa5b1e JB |
484 | If omitted, FRAME defaults to the currently selected frame.\n\ |
485 | The top left corner of the frame is considered to be row 0,\n\ | |
95605e15 | 486 | column 0.") |
b0c33a94 RS |
487 | (x, y, frame) |
488 | Lisp_Object x, y, frame; | |
7ab12479 JB |
489 | { |
490 | int part; | |
491 | ||
44fa5b1e | 492 | if (NILP (frame)) |
74112613 | 493 | XSETFRAME (frame, selected_frame); |
d5783c40 | 494 | else |
44fa5b1e | 495 | CHECK_LIVE_FRAME (frame, 2); |
b0c33a94 RS |
496 | CHECK_NUMBER (x, 0); |
497 | CHECK_NUMBER (y, 1); | |
7ab12479 | 498 | |
44fa5b1e | 499 | return window_from_coordinates (XFRAME (frame), |
b0c33a94 | 500 | XINT (x), XINT (y), |
7ab12479 JB |
501 | &part); |
502 | } | |
503 | ||
504 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
505 | "Return current value of point in WINDOW.\n\ | |
506 | For a nonselected window, this is the value point would have\n\ | |
507 | if that window were selected.\n\ | |
508 | \n\ | |
509 | Note that, when WINDOW is the selected window and its buffer\n\ | |
510 | is also currently selected, the value returned is the same as (point).\n\ | |
511 | It would be more strictly correct to return the `top-level' value\n\ | |
512 | of point, outside of any save-excursion forms.\n\ | |
513 | But that is hard to define.") | |
514 | (window) | |
515 | Lisp_Object window; | |
516 | { | |
517 | register struct window *w = decode_window (window); | |
518 | ||
519 | if (w == XWINDOW (selected_window) | |
520 | && current_buffer == XBUFFER (w->buffer)) | |
521 | return Fpoint (); | |
522 | return Fmarker_position (w->pointm); | |
523 | } | |
524 | ||
525 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
0fea6c40 RS |
526 | "Return position at which display currently starts in WINDOW.\n\ |
527 | This is updated by redisplay or by calling `set-window-start'.") | |
7ab12479 JB |
528 | (window) |
529 | Lisp_Object window; | |
530 | { | |
531 | return Fmarker_position (decode_window (window)->start); | |
532 | } | |
533 | ||
8646118f RS |
534 | /* This is text temporarily removed from the doc string below. |
535 | ||
7250968e RS |
536 | This function returns nil if the position is not currently known.\n\ |
537 | That happens when redisplay is preempted and doesn't finish.\n\ | |
538 | If in that case you want to compute where the end of the window would\n\ | |
539 | have been if redisplay had finished, do this:\n\ | |
540 | (save-excursion\n\ | |
541 | (goto-char (window-start window))\n\ | |
542 | (vertical-motion (1- (window-height window)) window)\n\ | |
8646118f RS |
543 | (point))") */ |
544 | ||
545 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 1, 0, | |
546 | "Return position at which display currently ends in WINDOW.\n\ | |
547 | This is updated by redisplay, when it runs to completion.\n\ | |
548 | Simply changing the buffer text or setting `window-start'\n\ | |
549 | does not update this value.") | |
7ab12479 JB |
550 | (window) |
551 | Lisp_Object window; | |
552 | { | |
553 | Lisp_Object value; | |
554 | struct window *w = decode_window (window); | |
5a41ab94 RS |
555 | Lisp_Object buf; |
556 | ||
557 | buf = w->buffer; | |
558 | CHECK_BUFFER (buf, 0); | |
559 | ||
8646118f | 560 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
561 | /* If we don't know the end position, return nil. |
562 | The user can compute it with vertical-motion if he wants to. | |
563 | It would be nicer to do it automatically, | |
564 | but that's so slow that it would probably bother people. */ | |
565 | if (NILP (w->window_end_valid)) | |
566 | return Qnil; | |
8646118f | 567 | #endif |
7250968e | 568 | |
74112613 KH |
569 | XSETINT (value, |
570 | BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos)); | |
7ab12479 JB |
571 | |
572 | return value; | |
573 | } | |
574 | ||
575 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
576 | "Make point value in WINDOW be at position POS in WINDOW's buffer.") | |
577 | (window, pos) | |
578 | Lisp_Object window, pos; | |
579 | { | |
580 | register struct window *w = decode_window (window); | |
581 | ||
582 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
583 | if (w == XWINDOW (selected_window)) | |
584 | Fgoto_char (pos); | |
585 | else | |
586 | set_marker_restricted (w->pointm, pos, w->buffer); | |
587 | ||
588 | return pos; | |
589 | } | |
590 | ||
591 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
592 | "Make display in WINDOW start at position POS in WINDOW's buffer.\n\ | |
593 | Optional third arg NOFORCE non-nil inhibits next redisplay\n\ | |
594 | from overriding motion of point in order to display at this exact start.") | |
595 | (window, pos, noforce) | |
596 | Lisp_Object window, pos, noforce; | |
597 | { | |
598 | register struct window *w = decode_window (window); | |
599 | ||
600 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
601 | set_marker_restricted (w->start, pos, w->buffer); | |
602 | /* this is not right, but much easier than doing what is right. */ | |
603 | w->start_at_line_beg = Qnil; | |
265a9e55 | 604 | if (NILP (noforce)) |
7ab12479 JB |
605 | w->force_start = Qt; |
606 | w->update_mode_line = Qt; | |
d834a2e9 | 607 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 608 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
609 | if (!EQ (window, selected_window)) |
610 | windows_or_buffers_changed++; | |
7ab12479 JB |
611 | return pos; |
612 | } | |
613 | ||
614 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
615 | 1, 1, 0, | |
616 | "Return WINDOW's dedicated object, usually t or nil.\n\ | |
1f18c48f | 617 | See also `set-window-dedicated-p'.") |
7ab12479 JB |
618 | (window) |
619 | Lisp_Object window; | |
620 | { | |
621 | return decode_window (window)->dedicated; | |
622 | } | |
623 | ||
d207b766 RS |
624 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
625 | Sset_window_dedicated_p, 2, 2, 0, | |
626 | "Control whether WINDOW is dedicated to the buffer it displays.\n\ | |
627 | If it is dedicated, Emacs will not automatically change\n\ | |
628 | which buffer appears in it.\n\ | |
629 | The second argument is the new value for the dedication flag;\n\ | |
630 | non-nil means yes.") | |
7ab12479 JB |
631 | (window, arg) |
632 | Lisp_Object window, arg; | |
633 | { | |
634 | register struct window *w = decode_window (window); | |
635 | ||
265a9e55 | 636 | if (NILP (arg)) |
7ab12479 JB |
637 | w->dedicated = Qnil; |
638 | else | |
d207b766 | 639 | w->dedicated = Qt; |
7ab12479 JB |
640 | |
641 | return w->dedicated; | |
642 | } | |
643 | ||
644 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
645 | 0, 1, 0, | |
646 | "Return the display-table that WINDOW is using.") | |
647 | (window) | |
648 | Lisp_Object window; | |
649 | { | |
650 | return decode_window (window)->display_table; | |
651 | } | |
652 | ||
653 | /* Get the display table for use currently on window W. | |
654 | This is either W's display table or W's buffer's display table. | |
655 | Ignore the specified tables if they are not valid; | |
656 | if no valid table is specified, return 0. */ | |
657 | ||
319315f1 | 658 | struct Lisp_Char_Table * |
7ab12479 JB |
659 | window_display_table (w) |
660 | struct window *w; | |
661 | { | |
662 | Lisp_Object tem; | |
663 | tem = w->display_table; | |
319315f1 RS |
664 | if (DISP_TABLE_P (tem)) |
665 | return XCHAR_TABLE (tem); | |
7ab12479 | 666 | tem = XBUFFER (w->buffer)->display_table; |
319315f1 RS |
667 | if (DISP_TABLE_P (tem)) |
668 | return XCHAR_TABLE (tem); | |
7ab12479 | 669 | tem = Vstandard_display_table; |
319315f1 RS |
670 | if (DISP_TABLE_P (tem)) |
671 | return XCHAR_TABLE (tem); | |
7ab12479 JB |
672 | return 0; |
673 | } | |
674 | ||
3a2712f9 | 675 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
7ab12479 JB |
676 | "Set WINDOW's display-table to TABLE.") |
677 | (window, table) | |
678 | register Lisp_Object window, table; | |
679 | { | |
680 | register struct window *w; | |
681 | register Lisp_Object z; /* Return value. */ | |
682 | ||
683 | w = decode_window (window); | |
684 | w->display_table = table; | |
685 | return table; | |
686 | } | |
687 | \f | |
688 | /* Record info on buffer window w is displaying | |
689 | when it is about to cease to display that buffer. */ | |
690 | static | |
691 | unshow_buffer (w) | |
692 | register struct window *w; | |
693 | { | |
12cae7c0 | 694 | Lisp_Object buf; |
7ab12479 | 695 | |
12cae7c0 | 696 | buf = w->buffer; |
7ab12479 JB |
697 | if (XBUFFER (buf) != XMARKER (w->pointm)->buffer) |
698 | abort (); | |
699 | ||
86e48436 RS |
700 | if (w == XWINDOW (XBUFFER (buf)->last_selected_window)) |
701 | XBUFFER (buf)->last_selected_window = Qnil; | |
702 | ||
573f41ab | 703 | #if 0 |
7ab12479 JB |
704 | if (w == XWINDOW (selected_window) |
705 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
706 | /* Do this except when the selected window's buffer | |
707 | is being removed from some other window. */ | |
573f41ab RS |
708 | #endif |
709 | /* last_window_start records the start position that this buffer | |
710 | had in the last window to be disconnected from it. | |
711 | Now that this statement is unconditional, | |
712 | it is possible for the buffer to be displayed in the | |
713 | selected window, while last_window_start reflects another | |
714 | window which was recently showing the same buffer. | |
715 | Some people might say that might be a good thing. Let's see. */ | |
7ab12479 JB |
716 | XBUFFER (buf)->last_window_start = marker_position (w->start); |
717 | ||
718 | /* Point in the selected window's buffer | |
719 | is actually stored in that buffer, and the window's pointm isn't used. | |
720 | So don't clobber point in that buffer. */ | |
721 | if (! EQ (buf, XWINDOW (selected_window)->buffer)) | |
722 | BUF_PT (XBUFFER (buf)) | |
723 | = clip_to_bounds (BUF_BEGV (XBUFFER (buf)), | |
724 | marker_position (w->pointm), | |
725 | BUF_ZV (XBUFFER (buf))); | |
726 | } | |
727 | ||
728 | /* Put replacement into the window structure in place of old. */ | |
729 | static | |
730 | replace_window (old, replacement) | |
731 | Lisp_Object old, replacement; | |
732 | { | |
733 | register Lisp_Object tem; | |
734 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
735 | ||
44fa5b1e JB |
736 | /* If OLD is its frame's root_window, then replacement is the new |
737 | root_window for that frame. */ | |
7ab12479 | 738 | |
7f4161e0 | 739 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 740 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 JB |
741 | |
742 | p->left = o->left; | |
743 | p->top = o->top; | |
744 | p->width = o->width; | |
745 | p->height = o->height; | |
746 | ||
747 | p->next = tem = o->next; | |
265a9e55 | 748 | if (!NILP (tem)) |
7ab12479 JB |
749 | XWINDOW (tem)->prev = replacement; |
750 | ||
751 | p->prev = tem = o->prev; | |
265a9e55 | 752 | if (!NILP (tem)) |
7ab12479 JB |
753 | XWINDOW (tem)->next = replacement; |
754 | ||
755 | p->parent = tem = o->parent; | |
265a9e55 | 756 | if (!NILP (tem)) |
7ab12479 JB |
757 | { |
758 | if (EQ (XWINDOW (tem)->vchild, old)) | |
759 | XWINDOW (tem)->vchild = replacement; | |
760 | if (EQ (XWINDOW (tem)->hchild, old)) | |
761 | XWINDOW (tem)->hchild = replacement; | |
762 | } | |
763 | ||
764 | /*** Here, if replacement is a vertical combination | |
765 | and so is its new parent, we should make replacement's | |
766 | children be children of that parent instead. ***/ | |
767 | } | |
768 | ||
769 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
770 | "Remove WINDOW from the display. Default is selected window.") | |
771 | (window) | |
772 | register Lisp_Object window; | |
773 | { | |
774 | register Lisp_Object tem, parent, sib; | |
775 | register struct window *p; | |
776 | register struct window *par; | |
777 | ||
605be8af JB |
778 | /* Because this function is called by other C code on non-leaf |
779 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
780 | so we can't decode_window here. */ | |
265a9e55 | 781 | if (NILP (window)) |
7ab12479 JB |
782 | window = selected_window; |
783 | else | |
784 | CHECK_WINDOW (window, 0); | |
7ab12479 | 785 | p = XWINDOW (window); |
605be8af JB |
786 | |
787 | /* It's okay to delete an already-deleted window. */ | |
788 | if (NILP (p->buffer) | |
789 | && NILP (p->hchild) | |
790 | && NILP (p->vchild)) | |
791 | return Qnil; | |
792 | ||
7ab12479 | 793 | parent = p->parent; |
265a9e55 | 794 | if (NILP (parent)) |
7ab12479 JB |
795 | error ("Attempt to delete minibuffer or sole ordinary window"); |
796 | par = XWINDOW (parent); | |
797 | ||
798 | windows_or_buffers_changed++; | |
29aeee73 | 799 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (p))) = 1; |
7ab12479 | 800 | |
605be8af JB |
801 | /* Are we trying to delete any frame's selected window? */ |
802 | { | |
0def0403 | 803 | Lisp_Object frame, pwindow; |
605be8af | 804 | |
0def0403 RS |
805 | /* See if the frame's selected window is either WINDOW |
806 | or any subwindow of it, by finding all that window's parents | |
807 | and comparing each one with WINDOW. */ | |
808 | frame = WINDOW_FRAME (XWINDOW (window)); | |
809 | pwindow = FRAME_SELECTED_WINDOW (XFRAME (frame)); | |
810 | ||
811 | while (!NILP (pwindow)) | |
812 | { | |
813 | if (EQ (window, pwindow)) | |
814 | break; | |
815 | pwindow = XWINDOW (pwindow)->parent; | |
816 | } | |
817 | ||
818 | if (EQ (window, pwindow)) | |
605be8af | 819 | { |
89bca612 RS |
820 | Lisp_Object alternative; |
821 | alternative = Fnext_window (window, Qlambda, Qnil); | |
605be8af JB |
822 | |
823 | /* If we're about to delete the selected window on the | |
824 | selected frame, then we should use Fselect_window to select | |
825 | the new window. On the other hand, if we're about to | |
826 | delete the selected window on any other frame, we shouldn't do | |
827 | anything but set the frame's selected_window slot. */ | |
828 | if (EQ (window, selected_window)) | |
829 | Fselect_window (alternative); | |
830 | else | |
0def0403 | 831 | FRAME_SELECTED_WINDOW (XFRAME (frame)) = alternative; |
605be8af JB |
832 | } |
833 | } | |
7ab12479 JB |
834 | |
835 | tem = p->buffer; | |
836 | /* tem is null for dummy parent windows | |
837 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 838 | if (!NILP (tem)) |
7ab12479 JB |
839 | { |
840 | unshow_buffer (p); | |
841 | unchain_marker (p->pointm); | |
842 | unchain_marker (p->start); | |
7ab12479 JB |
843 | } |
844 | ||
845 | tem = p->next; | |
265a9e55 | 846 | if (!NILP (tem)) |
7ab12479 JB |
847 | XWINDOW (tem)->prev = p->prev; |
848 | ||
849 | tem = p->prev; | |
265a9e55 | 850 | if (!NILP (tem)) |
7ab12479 JB |
851 | XWINDOW (tem)->next = p->next; |
852 | ||
853 | if (EQ (window, par->hchild)) | |
854 | par->hchild = p->next; | |
855 | if (EQ (window, par->vchild)) | |
856 | par->vchild = p->next; | |
857 | ||
858 | /* Find one of our siblings to give our space to. */ | |
859 | sib = p->prev; | |
265a9e55 | 860 | if (NILP (sib)) |
7ab12479 JB |
861 | { |
862 | /* If p gives its space to its next sibling, that sibling needs | |
863 | to have its top/left side pulled back to where p's is. | |
864 | set_window_{height,width} will re-position the sibling's | |
865 | children. */ | |
866 | sib = p->next; | |
7f4161e0 JB |
867 | XWINDOW (sib)->top = p->top; |
868 | XWINDOW (sib)->left = p->left; | |
7ab12479 JB |
869 | } |
870 | ||
871 | /* Stretch that sibling. */ | |
265a9e55 | 872 | if (!NILP (par->vchild)) |
7ab12479 JB |
873 | set_window_height (sib, |
874 | XFASTINT (XWINDOW (sib)->height) + XFASTINT (p->height), | |
875 | 1); | |
265a9e55 | 876 | if (!NILP (par->hchild)) |
7ab12479 JB |
877 | set_window_width (sib, |
878 | XFASTINT (XWINDOW (sib)->width) + XFASTINT (p->width), | |
879 | 1); | |
880 | ||
881 | /* If parent now has only one child, | |
882 | put the child into the parent's place. */ | |
7ab12479 | 883 | tem = par->hchild; |
265a9e55 | 884 | if (NILP (tem)) |
7ab12479 | 885 | tem = par->vchild; |
265a9e55 | 886 | if (NILP (XWINDOW (tem)->next)) |
7ab12479 | 887 | replace_window (parent, tem); |
605be8af JB |
888 | |
889 | /* Since we may be deleting combination windows, we must make sure that | |
890 | not only p but all its children have been marked as deleted. */ | |
891 | if (! NILP (p->hchild)) | |
892 | delete_all_subwindows (XWINDOW (p->hchild)); | |
893 | else if (! NILP (p->vchild)) | |
894 | delete_all_subwindows (XWINDOW (p->vchild)); | |
895 | ||
896 | /* Mark this window as deleted. */ | |
897 | p->buffer = p->hchild = p->vchild = Qnil; | |
898 | ||
7ab12479 JB |
899 | return Qnil; |
900 | } | |
901 | \f | |
7ab12479 | 902 | |
44fa5b1e | 903 | extern Lisp_Object next_frame (), prev_frame (); |
7ab12479 | 904 | |
26f6279d JB |
905 | /* This comment supplies the doc string for `next-window', |
906 | for make-docfile to see. We cannot put this in the real DEFUN | |
907 | due to limits in the Unix cpp. | |
908 | ||
909 | DEFUN ("next-window", Ffoo, Sfoo, 0, 3, 0, | |
7ab12479 | 910 | "Return next window after WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
911 | If omitted, WINDOW defaults to the selected window.\n\ |
912 | \n\ | |
913 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
914 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
915 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
916 | minibuffer even if it is active.\n\ | |
917 | \n\ | |
44fa5b1e JB |
918 | Several frames may share a single minibuffer; if the minibuffer\n\ |
919 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 920 | too. Therefore, `next-window' can be used to iterate through the\n\ |
44fa5b1e JB |
921 | set of windows even when the minibuffer is on another frame. If the\n\ |
922 | minibuffer does not count, only windows from WINDOW's frame count.\n\ | |
d5783c40 | 923 | \n\ |
44fa5b1e JB |
924 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
925 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 926 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 927 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
1f4c5d09 | 928 | If ALL-FRAMES is a frame, restrict search to windows on that frame.\n\ |
89bca612 | 929 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
930 | \n\ |
931 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
932 | `next-window' to iterate through the entire cycle of acceptable\n\ | |
933 | windows, eventually ending up back at the window you started with.\n\ | |
934 | `previous-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
935 | (window, minibuf, all_frames) */ |
936 | ||
937 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, | |
938 | 0) | |
44fa5b1e JB |
939 | (window, minibuf, all_frames) |
940 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
941 | { |
942 | register Lisp_Object tem; | |
d5783c40 | 943 | Lisp_Object start_window; |
7ab12479 | 944 | |
265a9e55 | 945 | if (NILP (window)) |
7ab12479 JB |
946 | window = selected_window; |
947 | else | |
605be8af | 948 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 949 | |
d5783c40 JB |
950 | start_window = window; |
951 | ||
952 | /* minibuf == nil may or may not include minibuffers. | |
953 | Decide if it does. */ | |
265a9e55 | 954 | if (NILP (minibuf)) |
fbdc1545 RS |
955 | minibuf = (minibuf_level ? minibuf_window : Qlambda); |
956 | else if (! EQ (minibuf, Qt)) | |
957 | minibuf = Qlambda; | |
958 | /* Now minibuf can be t => count all minibuffer windows, | |
959 | lambda => count none of them, | |
960 | or a specific minibuffer window (the active one) to count. */ | |
d5783c40 | 961 | |
1bb80f72 | 962 | /* all_frames == nil doesn't specify which frames to include. */ |
44fa5b1e | 963 | if (NILP (all_frames)) |
fbdc1545 | 964 | all_frames = (! EQ (minibuf, Qlambda) |
1bb80f72 RS |
965 | ? (FRAME_MINIBUF_WINDOW |
966 | (XFRAME | |
967 | (WINDOW_FRAME | |
968 | (XWINDOW (window))))) | |
969 | : Qnil); | |
89bca612 RS |
970 | else if (EQ (all_frames, Qvisible)) |
971 | ; | |
f812f9c6 RS |
972 | else if (XFASTINT (all_frames) == 0) |
973 | ; | |
1f4c5d09 RS |
974 | else if (FRAMEP (all_frames) && ! EQ (all_frames, Fwindow_frame (window))) |
975 | /* If all_frames is a frame and window arg isn't on that frame, just | |
976 | return the first window on the frame. */ | |
977 | return Fframe_first_window (all_frames); | |
44fa5b1e JB |
978 | else if (! EQ (all_frames, Qt)) |
979 | all_frames = Qnil; | |
644b477c RS |
980 | /* Now all_frames is t meaning search all frames, |
981 | nil meaning search just current frame, | |
f812f9c6 RS |
982 | visible meaning search just visible frames, |
983 | 0 meaning search visible and iconified frames, | |
644b477c | 984 | or a window, meaning search the frame that window belongs to. */ |
7ab12479 JB |
985 | |
986 | /* Do this loop at least once, to get the next window, and perhaps | |
987 | again, if we hit the minibuffer and that is not acceptable. */ | |
988 | do | |
989 | { | |
990 | /* Find a window that actually has a next one. This loop | |
991 | climbs up the tree. */ | |
265a9e55 JB |
992 | while (tem = XWINDOW (window)->next, NILP (tem)) |
993 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 994 | window = tem; |
d5783c40 | 995 | else |
7ab12479 | 996 | { |
44fa5b1e JB |
997 | /* We've reached the end of this frame. |
998 | Which other frames are acceptable? */ | |
999 | tem = WINDOW_FRAME (XWINDOW (window)); | |
44fa5b1e | 1000 | if (! NILP (all_frames)) |
1bb80f72 RS |
1001 | { |
1002 | Lisp_Object tem1; | |
1003 | ||
1004 | tem1 = tem; | |
1005 | tem = next_frame (tem, all_frames); | |
1006 | /* In the case where the minibuffer is active, | |
1007 | and we include its frame as well as the selected one, | |
1008 | next_frame may get stuck in that frame. | |
1009 | If that happens, go back to the selected frame | |
1010 | so we can complete the cycle. */ | |
1011 | if (EQ (tem, tem1)) | |
74112613 | 1012 | XSETFRAME (tem, selected_frame); |
1bb80f72 | 1013 | } |
44fa5b1e | 1014 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 1015 | |
7ab12479 JB |
1016 | break; |
1017 | } | |
1018 | ||
1019 | window = tem; | |
d5783c40 | 1020 | |
7ab12479 JB |
1021 | /* If we're in a combination window, find its first child and |
1022 | recurse on that. Otherwise, we've found the window we want. */ | |
1023 | while (1) | |
1024 | { | |
265a9e55 | 1025 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 1026 | window = XWINDOW (window)->hchild; |
265a9e55 | 1027 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
1028 | window = XWINDOW (window)->vchild; |
1029 | else break; | |
1030 | } | |
1031 | } | |
5c4d25a6 | 1032 | /* Which windows are acceptable? |
d5783c40 | 1033 | Exit the loop and accept this window if |
fbdc1545 RS |
1034 | this isn't a minibuffer window, |
1035 | or we're accepting all minibuffer windows, | |
1036 | or this is the active minibuffer and we are accepting that one, or | |
d5783c40 | 1037 | we've come all the way around and we're back at the original window. */ |
7ab12479 | 1038 | while (MINI_WINDOW_P (XWINDOW (window)) |
d5783c40 | 1039 | && ! EQ (minibuf, Qt) |
fbdc1545 | 1040 | && ! EQ (minibuf, window) |
7f4161e0 | 1041 | && ! EQ (window, start_window)); |
7ab12479 JB |
1042 | |
1043 | return window; | |
1044 | } | |
1045 | ||
26f6279d JB |
1046 | /* This comment supplies the doc string for `previous-window', |
1047 | for make-docfile to see. We cannot put this in the real DEFUN | |
1048 | due to limits in the Unix cpp. | |
1049 | ||
1050 | DEFUN ("previous-window", Ffoo, Sfoo, 0, 3, 0, | |
5c4d25a6 | 1051 | "Return the window preceding WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
1052 | If omitted, WINDOW defaults to the selected window.\n\ |
1053 | \n\ | |
1054 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
1055 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
1056 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
1057 | minibuffer even if it is active.\n\ | |
1058 | \n\ | |
44fa5b1e JB |
1059 | Several frames may share a single minibuffer; if the minibuffer\n\ |
1060 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 1061 | too. Therefore, `previous-window' can be used to iterate through\n\ |
44fa5b1e | 1062 | the set of windows even when the minibuffer is on another frame. If\n\ |
ed160f1f | 1063 | the minibuffer does not count, only windows from WINDOW's frame count\n\ |
d5783c40 | 1064 | \n\ |
44fa5b1e JB |
1065 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
1066 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 1067 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 1068 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
1f4c5d09 | 1069 | If ALL-FRAMES is a frame, restrict search to windows on that frame.\n\ |
89bca612 | 1070 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
1071 | \n\ |
1072 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
1073 | `previous-window' to iterate through the entire cycle of acceptable\n\ | |
1074 | windows, eventually ending up back at the window you started with.\n\ | |
1075 | `next-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
1076 | (window, minibuf, all_frames) */ |
1077 | ||
1078 | ||
1079 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, | |
1080 | 0) | |
44fa5b1e JB |
1081 | (window, minibuf, all_frames) |
1082 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
1083 | { |
1084 | register Lisp_Object tem; | |
d5783c40 | 1085 | Lisp_Object start_window; |
7ab12479 | 1086 | |
265a9e55 | 1087 | if (NILP (window)) |
7ab12479 JB |
1088 | window = selected_window; |
1089 | else | |
605be8af | 1090 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 1091 | |
d5783c40 JB |
1092 | start_window = window; |
1093 | ||
1094 | /* minibuf == nil may or may not include minibuffers. | |
1095 | Decide if it does. */ | |
265a9e55 | 1096 | if (NILP (minibuf)) |
fbdc1545 RS |
1097 | minibuf = (minibuf_level ? minibuf_window : Qlambda); |
1098 | else if (! EQ (minibuf, Qt)) | |
1099 | minibuf = Qlambda; | |
1100 | /* Now minibuf can be t => count all minibuffer windows, | |
1101 | lambda => count none of them, | |
1102 | or a specific minibuffer window (the active one) to count. */ | |
d5783c40 | 1103 | |
44fa5b1e JB |
1104 | /* all_frames == nil doesn't specify which frames to include. |
1105 | Decide which frames it includes. */ | |
1106 | if (NILP (all_frames)) | |
fbdc1545 | 1107 | all_frames = (! EQ (minibuf, Qlambda) |
44fa5b1e JB |
1108 | ? (FRAME_MINIBUF_WINDOW |
1109 | (XFRAME | |
1110 | (WINDOW_FRAME | |
d5783c40 JB |
1111 | (XWINDOW (window))))) |
1112 | : Qnil); | |
89bca612 RS |
1113 | else if (EQ (all_frames, Qvisible)) |
1114 | ; | |
f812f9c6 RS |
1115 | else if (XFASTINT (all_frames) == 0) |
1116 | ; | |
1f4c5d09 RS |
1117 | else if (FRAMEP (all_frames) && ! EQ (all_frames, Fwindow_frame (window))) |
1118 | /* If all_frames is a frame and window arg isn't on that frame, just | |
1119 | return the first window on the frame. */ | |
1120 | return Fframe_first_window (all_frames); | |
44fa5b1e JB |
1121 | else if (! EQ (all_frames, Qt)) |
1122 | all_frames = Qnil; | |
644b477c RS |
1123 | /* Now all_frames is t meaning search all frames, |
1124 | nil meaning search just current frame, | |
f812f9c6 RS |
1125 | visible meaning search just visible frames, |
1126 | 0 meaning search visible and iconified frames, | |
644b477c | 1127 | or a window, meaning search the frame that window belongs to. */ |
7ab12479 JB |
1128 | |
1129 | /* Do this loop at least once, to get the previous window, and perhaps | |
1130 | again, if we hit the minibuffer and that is not acceptable. */ | |
1131 | do | |
1132 | { | |
1133 | /* Find a window that actually has a previous one. This loop | |
1134 | climbs up the tree. */ | |
265a9e55 JB |
1135 | while (tem = XWINDOW (window)->prev, NILP (tem)) |
1136 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 1137 | window = tem; |
d5783c40 | 1138 | else |
7ab12479 | 1139 | { |
44fa5b1e JB |
1140 | /* We have found the top window on the frame. |
1141 | Which frames are acceptable? */ | |
1142 | tem = WINDOW_FRAME (XWINDOW (window)); | |
44fa5b1e | 1143 | if (! NILP (all_frames)) |
dbc4e1c1 JB |
1144 | /* It's actually important that we use prev_frame here, |
1145 | rather than next_frame. All the windows acceptable | |
1146 | according to the given parameters should form a ring; | |
1147 | Fnext_window and Fprevious_window should go back and | |
1148 | forth around the ring. If we use next_frame here, | |
1149 | then Fnext_window and Fprevious_window take different | |
1150 | paths through the set of acceptable windows. | |
1151 | window_loop assumes that these `ring' requirement are | |
1152 | met. */ | |
1bb80f72 RS |
1153 | { |
1154 | Lisp_Object tem1; | |
1155 | ||
1156 | tem1 = tem; | |
1157 | tem = prev_frame (tem, all_frames); | |
1158 | /* In the case where the minibuffer is active, | |
1159 | and we include its frame as well as the selected one, | |
1160 | next_frame may get stuck in that frame. | |
1161 | If that happens, go back to the selected frame | |
1162 | so we can complete the cycle. */ | |
1163 | if (EQ (tem, tem1)) | |
74112613 | 1164 | XSETFRAME (tem, selected_frame); |
1bb80f72 | 1165 | } |
644b477c RS |
1166 | /* If this frame has a minibuffer, find that window first, |
1167 | because it is conceptually the last window in that frame. */ | |
5e12e32f JB |
1168 | if (FRAME_HAS_MINIBUF_P (XFRAME (tem))) |
1169 | tem = FRAME_MINIBUF_WINDOW (XFRAME (tem)); | |
1170 | else | |
644b477c | 1171 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 1172 | |
7ab12479 JB |
1173 | break; |
1174 | } | |
1175 | ||
1176 | window = tem; | |
1177 | /* If we're in a combination window, find its last child and | |
1178 | recurse on that. Otherwise, we've found the window we want. */ | |
1179 | while (1) | |
1180 | { | |
265a9e55 | 1181 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 1182 | window = XWINDOW (window)->hchild; |
265a9e55 | 1183 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
1184 | window = XWINDOW (window)->vchild; |
1185 | else break; | |
265a9e55 | 1186 | while (tem = XWINDOW (window)->next, !NILP (tem)) |
7ab12479 JB |
1187 | window = tem; |
1188 | } | |
1189 | } | |
5c4d25a6 | 1190 | /* Which windows are acceptable? |
d5783c40 | 1191 | Exit the loop and accept this window if |
fbdc1545 RS |
1192 | this isn't a minibuffer window, |
1193 | or we're accepting all minibuffer windows, | |
1194 | or this is the active minibuffer and we are accepting that one, or | |
d5783c40 | 1195 | we've come all the way around and we're back at the original window. */ |
7ab12479 | 1196 | while (MINI_WINDOW_P (XWINDOW (window)) |
fbdc1545 RS |
1197 | && ! EQ (minibuf, Qt) |
1198 | && ! EQ (minibuf, window) | |
1199 | && ! EQ (window, start_window)); | |
7ab12479 JB |
1200 | |
1201 | return window; | |
1202 | } | |
1203 | ||
62c07cc7 | 1204 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
44fa5b1e JB |
1205 | "Select the ARG'th different window on this frame.\n\ |
1206 | All windows on current frame are arranged in a cyclic order.\n\ | |
7ab12479 JB |
1207 | This command selects the window ARG steps away in that order.\n\ |
1208 | A negative ARG moves in the opposite order. If the optional second\n\ | |
44fa5b1e | 1209 | argument ALL_FRAMES is non-nil, cycle through all frames.") |
413430c5 EN |
1210 | (arg, all_frames) |
1211 | register Lisp_Object arg, all_frames; | |
7ab12479 JB |
1212 | { |
1213 | register int i; | |
1214 | register Lisp_Object w; | |
1215 | ||
413430c5 | 1216 | CHECK_NUMBER (arg, 0); |
7ab12479 | 1217 | w = selected_window; |
413430c5 | 1218 | i = XINT (arg); |
7ab12479 JB |
1219 | |
1220 | while (i > 0) | |
1221 | { | |
44fa5b1e | 1222 | w = Fnext_window (w, Qnil, all_frames); |
7ab12479 JB |
1223 | i--; |
1224 | } | |
1225 | while (i < 0) | |
1226 | { | |
44fa5b1e | 1227 | w = Fprevious_window (w, Qnil, all_frames); |
7ab12479 JB |
1228 | i++; |
1229 | } | |
1230 | Fselect_window (w); | |
1231 | return Qnil; | |
1232 | } | |
1233 | \f | |
1234 | /* Look at all windows, performing an operation specified by TYPE | |
1235 | with argument OBJ. | |
75d8f668 | 1236 | If FRAMES is Qt, look at all frames; |
75d8f668 | 1237 | Qnil, look at just the selected frame; |
89bca612 | 1238 | Qvisible, look at visible frames; |
75d8f668 | 1239 | a frame, just look at windows on that frame. |
7ab12479 JB |
1240 | If MINI is non-zero, perform the operation on minibuffer windows too. |
1241 | */ | |
1242 | ||
1243 | enum window_loop | |
1244 | { | |
1245 | WINDOW_LOOP_UNUSED, | |
1246 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
1247 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
1248 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
1249 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1250 | GET_LARGEST_WINDOW, | |
a68c0d3b | 1251 | UNSHOW_BUFFER /* Arg is buffer */ |
7ab12479 JB |
1252 | }; |
1253 | ||
1254 | static Lisp_Object | |
44fa5b1e | 1255 | window_loop (type, obj, mini, frames) |
7ab12479 | 1256 | enum window_loop type; |
44fa5b1e | 1257 | register Lisp_Object obj, frames; |
7ab12479 JB |
1258 | int mini; |
1259 | { | |
1260 | register Lisp_Object w; | |
1261 | register Lisp_Object best_window; | |
1262 | register Lisp_Object next_window; | |
4b206065 | 1263 | register Lisp_Object last_window; |
44fa5b1e | 1264 | FRAME_PTR frame; |
89bca612 RS |
1265 | Lisp_Object frame_arg; |
1266 | frame_arg = Qt; | |
44fa5b1e JB |
1267 | |
1268 | /* If we're only looping through windows on a particular frame, | |
1269 | frame points to that frame. If we're looping through windows | |
1270 | on all frames, frame is 0. */ | |
1271 | if (FRAMEP (frames)) | |
1272 | frame = XFRAME (frames); | |
1273 | else if (NILP (frames)) | |
1274 | frame = selected_frame; | |
7ab12479 | 1275 | else |
44fa5b1e | 1276 | frame = 0; |
89bca612 RS |
1277 | if (frame) |
1278 | frame_arg = Qlambda; | |
f812f9c6 RS |
1279 | else if (XFASTINT (frames) == 0) |
1280 | frame_arg = frames; | |
89bca612 RS |
1281 | else if (EQ (frames, Qvisible)) |
1282 | frame_arg = frames; | |
7ab12479 | 1283 | |
89bca612 RS |
1284 | /* frame_arg is Qlambda to stick to one frame, |
1285 | Qvisible to consider all visible frames, | |
1286 | or Qt otherwise. */ | |
1287 | ||
7ab12479 | 1288 | /* Pick a window to start with. */ |
017b2bad | 1289 | if (WINDOWP (obj)) |
4b206065 | 1290 | w = obj; |
44fa5b1e | 1291 | else if (frame) |
4b206065 | 1292 | w = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 1293 | else |
4b206065 JB |
1294 | w = FRAME_SELECTED_WINDOW (selected_frame); |
1295 | ||
1296 | /* Figure out the last window we're going to mess with. Since | |
1297 | Fnext_window, given the same options, is guaranteed to go in a | |
1298 | ring, we can just use Fprevious_window to find the last one. | |
1299 | ||
1300 | We can't just wait until we hit the first window again, because | |
1301 | it might be deleted. */ | |
1302 | ||
89bca612 | 1303 | last_window = Fprevious_window (w, mini ? Qt : Qnil, frame_arg); |
7ab12479 | 1304 | |
7ab12479 | 1305 | best_window = Qnil; |
4b206065 | 1306 | for (;;) |
7ab12479 | 1307 | { |
75d8f668 JB |
1308 | FRAME_PTR w_frame = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
1309 | ||
7ab12479 JB |
1310 | /* Pick the next window now, since some operations will delete |
1311 | the current window. */ | |
89bca612 | 1312 | next_window = Fnext_window (w, mini ? Qt : Qnil, frame_arg); |
7ab12479 | 1313 | |
d29a5631 RS |
1314 | /* Note that we do not pay attention here to whether |
1315 | the frame is visible, since Fnext_window skips non-visible frames | |
1316 | if that is desired, under the control of frame_arg. */ | |
75d8f668 | 1317 | if (! MINI_WINDOW_P (XWINDOW (w)) |
7ab12479 JB |
1318 | || (mini && minibuf_level > 0)) |
1319 | switch (type) | |
1320 | { | |
1321 | case GET_BUFFER_WINDOW: | |
7ab12479 JB |
1322 | if (XBUFFER (XWINDOW (w)->buffer) == XBUFFER (obj)) |
1323 | return w; | |
1324 | break; | |
1325 | ||
1326 | case GET_LRU_WINDOW: | |
1327 | /* t as arg means consider only full-width windows */ | |
111e5992 | 1328 | if (!NILP (obj) && !WINDOW_FULL_WIDTH_P (XWINDOW (w))) |
7ab12479 | 1329 | break; |
7ab12479 JB |
1330 | /* Ignore dedicated windows and minibuffers. */ |
1331 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1332 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 | 1333 | break; |
265a9e55 | 1334 | if (NILP (best_window) |
7ab12479 JB |
1335 | || (XFASTINT (XWINDOW (best_window)->use_time) |
1336 | > XFASTINT (XWINDOW (w)->use_time))) | |
1337 | best_window = w; | |
1338 | break; | |
1339 | ||
1340 | case DELETE_OTHER_WINDOWS: | |
1341 | if (XWINDOW (w) != XWINDOW (obj)) | |
1342 | Fdelete_window (w); | |
1343 | break; | |
1344 | ||
1345 | case DELETE_BUFFER_WINDOWS: | |
1346 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1347 | { | |
3548e138 RS |
1348 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
1349 | ||
1350 | /* If this window is dedicated, and in a frame of its own, | |
1351 | kill the frame. */ | |
1352 | if (EQ (w, FRAME_ROOT_WINDOW (f)) | |
1353 | && !NILP (XWINDOW (w)->dedicated) | |
1354 | && other_visible_frames (f)) | |
7ab12479 | 1355 | { |
3548e138 RS |
1356 | /* Skip the other windows on this frame. |
1357 | There might be one, the minibuffer! */ | |
1358 | if (! EQ (w, last_window)) | |
1359 | while (f == XFRAME (WINDOW_FRAME (XWINDOW (next_window)))) | |
1360 | { | |
1361 | /* As we go, check for the end of the loop. | |
1362 | We mustn't start going around a second time. */ | |
1363 | if (EQ (next_window, last_window)) | |
1364 | { | |
1365 | last_window = w; | |
1366 | break; | |
1367 | } | |
1368 | next_window = Fnext_window (next_window, | |
1369 | mini ? Qt : Qnil, | |
1370 | frame_arg); | |
1371 | } | |
1372 | /* Now we can safely delete the frame. */ | |
1373 | Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil); | |
7ab12479 JB |
1374 | } |
1375 | else | |
3548e138 RS |
1376 | /* If we're deleting the buffer displayed in the only window |
1377 | on the frame, find a new buffer to display there. */ | |
1378 | if (NILP (XWINDOW (w)->parent)) | |
1379 | { | |
1380 | Lisp_Object new_buffer; | |
1381 | new_buffer = Fother_buffer (obj, Qnil); | |
1382 | if (NILP (new_buffer)) | |
1383 | new_buffer | |
1384 | = Fget_buffer_create (build_string ("*scratch*")); | |
1385 | Fset_window_buffer (w, new_buffer); | |
1386 | if (EQ (w, selected_window)) | |
1387 | Fset_buffer (XWINDOW (w)->buffer); | |
1388 | } | |
1389 | else | |
1390 | Fdelete_window (w); | |
7ab12479 JB |
1391 | } |
1392 | break; | |
1393 | ||
1394 | case GET_LARGEST_WINDOW: | |
7ab12479 JB |
1395 | /* Ignore dedicated windows and minibuffers. */ |
1396 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1397 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 JB |
1398 | break; |
1399 | { | |
1400 | struct window *best_window_ptr = XWINDOW (best_window); | |
1401 | struct window *w_ptr = XWINDOW (w); | |
6b54027b RS |
1402 | if (NILP (best_window) |
1403 | || (XFASTINT (w_ptr->height) * XFASTINT (w_ptr->width) | |
1404 | > (XFASTINT (best_window_ptr->height) | |
1405 | * XFASTINT (best_window_ptr->width)))) | |
7ab12479 JB |
1406 | best_window = w; |
1407 | } | |
1408 | break; | |
1409 | ||
1410 | case UNSHOW_BUFFER: | |
1411 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1412 | { | |
1413 | /* Find another buffer to show in this window. */ | |
12cae7c0 | 1414 | Lisp_Object another_buffer; |
38ab08d1 | 1415 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
12cae7c0 | 1416 | another_buffer = Fother_buffer (obj, Qnil); |
265a9e55 | 1417 | if (NILP (another_buffer)) |
7ab12479 JB |
1418 | another_buffer |
1419 | = Fget_buffer_create (build_string ("*scratch*")); | |
38ab08d1 RS |
1420 | /* If this window is dedicated, and in a frame of its own, |
1421 | kill the frame. */ | |
1422 | if (EQ (w, FRAME_ROOT_WINDOW (f)) | |
596122a7 | 1423 | && !NILP (XWINDOW (w)->dedicated) |
38ab08d1 | 1424 | && other_visible_frames (f)) |
45945a7b RS |
1425 | { |
1426 | /* Skip the other windows on this frame. | |
1427 | There might be one, the minibuffer! */ | |
1428 | if (! EQ (w, last_window)) | |
1429 | while (f == XFRAME (WINDOW_FRAME (XWINDOW (next_window)))) | |
1430 | { | |
1431 | /* As we go, check for the end of the loop. | |
1432 | We mustn't start going around a second time. */ | |
1433 | if (EQ (next_window, last_window)) | |
1434 | { | |
1435 | last_window = w; | |
1436 | break; | |
1437 | } | |
1438 | next_window = Fnext_window (next_window, | |
1439 | mini ? Qt : Qnil, | |
1440 | frame_arg); | |
1441 | } | |
1442 | /* Now we can safely delete the frame. */ | |
1443 | Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil); | |
1444 | } | |
38ab08d1 | 1445 | else |
38ab08d1 RS |
1446 | { |
1447 | /* Otherwise show a different buffer in the window. */ | |
1448 | XWINDOW (w)->dedicated = Qnil; | |
1449 | Fset_window_buffer (w, another_buffer); | |
1450 | if (EQ (w, selected_window)) | |
1451 | Fset_buffer (XWINDOW (w)->buffer); | |
1452 | } | |
7ab12479 JB |
1453 | } |
1454 | break; | |
1455 | } | |
4b206065 JB |
1456 | |
1457 | if (EQ (w, last_window)) | |
1458 | break; | |
1459 | ||
7ab12479 JB |
1460 | w = next_window; |
1461 | } | |
7ab12479 JB |
1462 | |
1463 | return best_window; | |
37962e60 | 1464 | } |
605be8af | 1465 | |
7ab12479 JB |
1466 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, |
1467 | "Return the window least recently selected or used for display.\n\ | |
89bca612 | 1468 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1469 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1470 | If FRAME is t, search all frames.\n\ |
1471 | If FRAME is nil, search only the selected frame.\n\ | |
1472 | If FRAME is a frame, search only that frame.") | |
1473 | (frame) | |
1474 | Lisp_Object frame; | |
7ab12479 JB |
1475 | { |
1476 | register Lisp_Object w; | |
1477 | /* First try for a window that is full-width */ | |
89bca612 | 1478 | w = window_loop (GET_LRU_WINDOW, Qt, 0, frame); |
265a9e55 | 1479 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
1480 | return w; |
1481 | /* If none of them, try the rest */ | |
89bca612 | 1482 | return window_loop (GET_LRU_WINDOW, Qnil, 0, frame); |
7ab12479 JB |
1483 | } |
1484 | ||
1485 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
1486 | "Return the largest window in area.\n\ | |
89bca612 | 1487 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1488 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1489 | If FRAME is t, search all frames.\n\ |
1490 | If FRAME is nil, search only the selected frame.\n\ | |
1491 | If FRAME is a frame, search only that frame.") | |
44fa5b1e JB |
1492 | (frame) |
1493 | Lisp_Object frame; | |
7ab12479 JB |
1494 | { |
1495 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
44fa5b1e | 1496 | frame); |
7ab12479 JB |
1497 | } |
1498 | ||
1499 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
1500 | "Return a window currently displaying BUFFER, or nil if none.\n\ | |
89bca612 | 1501 | If optional argument FRAME is `visible', search all visible frames.\n\ |
f812f9c6 | 1502 | If optional argument FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 | 1503 | If FRAME is t, search all frames.\n\ |
1bc981d2 | 1504 | If FRAME is nil, search only the selected frame.\n\ |
89bca612 | 1505 | If FRAME is a frame, search only that frame.") |
44fa5b1e JB |
1506 | (buffer, frame) |
1507 | Lisp_Object buffer, frame; | |
7ab12479 JB |
1508 | { |
1509 | buffer = Fget_buffer (buffer); | |
017b2bad | 1510 | if (BUFFERP (buffer)) |
44fa5b1e | 1511 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
1512 | else |
1513 | return Qnil; | |
1514 | } | |
1515 | ||
1516 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
1517 | 0, 1, "", | |
44fa5b1e | 1518 | "Make WINDOW (or the selected window) fill its frame.\n\ |
f16a1ed3 RS |
1519 | Only the frame WINDOW is on is affected.\n\ |
1520 | This function tries to reduce display jumps\n\ | |
1521 | by keeping the text previously visible in WINDOW\n\ | |
1522 | in the same place on the frame. Doing this depends on\n\ | |
1523 | the value of (window-start WINDOW), so if calling this function\n\ | |
1524 | in a program gives strange scrolling, make sure the window-start\n\ | |
1525 | value is reasonable when this function is called.") | |
7ab12479 JB |
1526 | (window) |
1527 | Lisp_Object window; | |
1528 | { | |
1529 | struct window *w; | |
00d3d838 | 1530 | int startpos; |
7ab12479 JB |
1531 | int top; |
1532 | ||
265a9e55 | 1533 | if (NILP (window)) |
7ab12479 JB |
1534 | window = selected_window; |
1535 | else | |
605be8af | 1536 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1537 | |
1538 | w = XWINDOW (window); | |
a2b38b3c | 1539 | |
00d3d838 KH |
1540 | startpos = marker_position (w->start); |
1541 | top = XFASTINT (w->top) - FRAME_MENU_BAR_LINES (XFRAME (WINDOW_FRAME (w))); | |
7ab12479 | 1542 | |
a2b38b3c RS |
1543 | if (MINI_WINDOW_P (w) && top > 0) |
1544 | error ("Can't expand minibuffer to full frame"); | |
1545 | ||
70728a80 | 1546 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 1547 | |
00d3d838 KH |
1548 | /* Try to minimize scrolling, by setting the window start to the point |
1549 | will cause the text at the old window start to be at the same place | |
1550 | on the frame. But don't try to do this if the window start is | |
1551 | outside the visible portion (as might happen when the display is | |
1552 | not current, due to typeahead). */ | |
1553 | if (startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
1554 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) | |
1555 | { | |
1556 | struct position pos; | |
1557 | struct buffer *obuf = current_buffer; | |
1558 | ||
1559 | Fset_buffer (w->buffer); | |
1560 | /* This computation used to temporarily move point, but that can | |
1561 | have unwanted side effects due to text properties. */ | |
0383eb57 | 1562 | pos = *vmotion (startpos, -top, w); |
00d3d838 KH |
1563 | Fset_marker (w->start, make_number (pos.bufpos), w->buffer); |
1564 | w->start_at_line_beg = ((pos.bufpos == BEGV | |
1565 | || FETCH_CHAR (pos.bufpos - 1) == '\n') ? Qt | |
1566 | : Qnil); | |
80622eec RS |
1567 | /* We need to do this, so that the window-scroll-functions |
1568 | get called. */ | |
1569 | w->force_start = Qt; | |
00d3d838 KH |
1570 | |
1571 | set_buffer_internal (obuf); | |
1572 | } | |
7ab12479 JB |
1573 | return Qnil; |
1574 | } | |
1575 | ||
1576 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
3cbbb729 | 1577 | 1, 2, "bDelete windows on (buffer): ", |
26f6279d JB |
1578 | "Delete all windows showing BUFFER.\n\ |
1579 | Optional second argument FRAME controls which frames are affected.\n\ | |
1580 | If nil or omitted, delete all windows showing BUFFER in any frame.\n\ | |
1581 | If t, delete only windows showing BUFFER in the selected frame.\n\ | |
89bca612 | 1582 | If `visible', delete all windows showing BUFFER in any visible frame.\n\ |
26f6279d JB |
1583 | If a frame, delete only windows showing BUFFER in that frame.") |
1584 | (buffer, frame) | |
1585 | Lisp_Object buffer, frame; | |
7ab12479 | 1586 | { |
26f6279d JB |
1587 | /* FRAME uses t and nil to mean the opposite of what window_loop |
1588 | expects. */ | |
1589 | if (! FRAMEP (frame)) | |
1590 | frame = NILP (frame) ? Qt : Qnil; | |
26f6279d | 1591 | |
265a9e55 | 1592 | if (!NILP (buffer)) |
7ab12479 JB |
1593 | { |
1594 | buffer = Fget_buffer (buffer); | |
1595 | CHECK_BUFFER (buffer, 0); | |
26f6279d | 1596 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 JB |
1597 | } |
1598 | return Qnil; | |
1599 | } | |
1600 | ||
1601 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
1602 | Sreplace_buffer_in_windows, | |
1603 | 1, 1, "bReplace buffer in windows: ", | |
1604 | "Replace BUFFER with some other buffer in all windows showing it.") | |
1605 | (buffer) | |
1606 | Lisp_Object buffer; | |
1607 | { | |
265a9e55 | 1608 | if (!NILP (buffer)) |
7ab12479 JB |
1609 | { |
1610 | buffer = Fget_buffer (buffer); | |
1611 | CHECK_BUFFER (buffer, 0); | |
1612 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
1613 | } | |
1614 | return Qnil; | |
1615 | } | |
ff58478b RS |
1616 | |
1617 | /* Replace BUFFER with some other buffer in all windows | |
1618 | of all frames, even those on other keyboards. */ | |
1619 | ||
1620 | void | |
1621 | replace_buffer_in_all_windows (buffer) | |
1622 | Lisp_Object buffer; | |
1623 | { | |
27abb84f | 1624 | #ifdef MULTI_KBOARD |
ff58478b RS |
1625 | Lisp_Object tail, frame; |
1626 | ||
ff58478b RS |
1627 | /* A single call to window_loop won't do the job |
1628 | because it only considers frames on the current keyboard. | |
1629 | So loop manually over frames, and handle each one. */ | |
1630 | FOR_EACH_FRAME (tail, frame) | |
27abb84f | 1631 | window_loop (UNSHOW_BUFFER, buffer, 0, frame); |
ff58478b RS |
1632 | #else |
1633 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
1634 | #endif | |
1635 | } | |
7ab12479 JB |
1636 | \f |
1637 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
1638 | |
1639 | /* The smallest acceptable dimensions for a window. Anything smaller | |
1640 | might crash Emacs. */ | |
1641 | #define MIN_SAFE_WINDOW_WIDTH (2) | |
1642 | #define MIN_SAFE_WINDOW_HEIGHT (2) | |
1643 | ||
1644 | /* Make sure that window_min_height and window_min_width are | |
1645 | not too small; if they are, set them to safe minima. */ | |
1646 | ||
1647 | static void | |
1648 | check_min_window_sizes () | |
1649 | { | |
1650 | /* Smaller values might permit a crash. */ | |
1651 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
1652 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
1653 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
1654 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
1655 | } | |
1656 | ||
1657 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
1658 | minimum allowable size. */ | |
605be8af | 1659 | void |
a481b3ea | 1660 | check_frame_size (frame, rows, cols) |
605be8af JB |
1661 | FRAME_PTR frame; |
1662 | int *rows, *cols; | |
a481b3ea | 1663 | { |
628df3bf | 1664 | /* For height, we have to see: |
37962e60 | 1665 | whether the frame has a minibuffer, |
628df3bf JB |
1666 | whether it wants a mode line, and |
1667 | whether it has a menu bar. */ | |
a481b3ea | 1668 | int min_height = |
79f92720 JB |
1669 | (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1 |
1670 | : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT | |
a481b3ea | 1671 | : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); |
628df3bf JB |
1672 | if (FRAME_MENU_BAR_LINES (frame) > 0) |
1673 | min_height += FRAME_MENU_BAR_LINES (frame); | |
a481b3ea JB |
1674 | |
1675 | if (*rows < min_height) | |
1676 | *rows = min_height; | |
1677 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
1678 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
1679 | } | |
1680 | ||
7ab12479 JB |
1681 | /* Normally the window is deleted if it gets too small. |
1682 | nodelete nonzero means do not do this. | |
1683 | (The caller should check later and do so if appropriate) */ | |
1684 | ||
1685 | set_window_height (window, height, nodelete) | |
1686 | Lisp_Object window; | |
1687 | int height; | |
1688 | int nodelete; | |
1689 | { | |
1690 | register struct window *w = XWINDOW (window); | |
1691 | register struct window *c; | |
1692 | int oheight = XFASTINT (w->height); | |
1693 | int top, pos, lastbot, opos, lastobot; | |
1694 | Lisp_Object child; | |
1695 | ||
a481b3ea JB |
1696 | check_min_window_sizes (); |
1697 | ||
7ab12479 | 1698 | if (!nodelete |
265a9e55 | 1699 | && ! NILP (w->parent) |
7ab12479 JB |
1700 | && height < window_min_height) |
1701 | { | |
1702 | Fdelete_window (window); | |
1703 | return; | |
1704 | } | |
1705 | ||
d834a2e9 | 1706 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1707 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 1708 | windows_or_buffers_changed++; |
29aeee73 RS |
1709 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; |
1710 | ||
d834a2e9 | 1711 | XSETFASTINT (w->height, height); |
265a9e55 | 1712 | if (!NILP (w->hchild)) |
7ab12479 | 1713 | { |
265a9e55 | 1714 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1715 | { |
1716 | XWINDOW (child)->top = w->top; | |
1717 | set_window_height (child, height, nodelete); | |
1718 | } | |
1719 | } | |
265a9e55 | 1720 | else if (!NILP (w->vchild)) |
7ab12479 JB |
1721 | { |
1722 | lastbot = top = XFASTINT (w->top); | |
1723 | lastobot = 0; | |
265a9e55 | 1724 | for (child = w->vchild; !NILP (child); child = c->next) |
7ab12479 JB |
1725 | { |
1726 | c = XWINDOW (child); | |
1727 | ||
1728 | opos = lastobot + XFASTINT (c->height); | |
1729 | ||
d834a2e9 | 1730 | XSETFASTINT (c->top, lastbot); |
7ab12479 JB |
1731 | |
1732 | pos = (((opos * height) << 1) + oheight) / (oheight << 1); | |
1733 | ||
1734 | /* Avoid confusion: inhibit deletion of child if becomes too small */ | |
1735 | set_window_height (child, pos + top - lastbot, 1); | |
1736 | ||
1737 | /* Now advance child to next window, | |
1738 | and set lastbot if child was not just deleted. */ | |
1739 | lastbot = pos + top; | |
1740 | lastobot = opos; | |
1741 | } | |
1742 | /* Now delete any children that became too small. */ | |
1743 | if (!nodelete) | |
265a9e55 | 1744 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1745 | { |
1746 | set_window_height (child, XINT (XWINDOW (child)->height), 0); | |
1747 | } | |
1748 | } | |
1749 | } | |
1750 | ||
1751 | /* Recursively set width of WINDOW and its inferiors. */ | |
1752 | ||
1753 | set_window_width (window, width, nodelete) | |
1754 | Lisp_Object window; | |
1755 | int width; | |
1756 | int nodelete; | |
1757 | { | |
1758 | register struct window *w = XWINDOW (window); | |
1759 | register struct window *c; | |
1760 | int owidth = XFASTINT (w->width); | |
1761 | int left, pos, lastright, opos, lastoright; | |
1762 | Lisp_Object child; | |
1763 | ||
abdced83 | 1764 | if (!nodelete && width < window_min_width && !NILP (w->parent)) |
7ab12479 JB |
1765 | { |
1766 | Fdelete_window (window); | |
1767 | return; | |
1768 | } | |
1769 | ||
d834a2e9 | 1770 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1771 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 1772 | windows_or_buffers_changed++; |
29aeee73 RS |
1773 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; |
1774 | ||
d834a2e9 | 1775 | XSETFASTINT (w->width, width); |
265a9e55 | 1776 | if (!NILP (w->vchild)) |
7ab12479 | 1777 | { |
265a9e55 | 1778 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1779 | { |
1780 | XWINDOW (child)->left = w->left; | |
1781 | set_window_width (child, width, nodelete); | |
1782 | } | |
1783 | } | |
265a9e55 | 1784 | else if (!NILP (w->hchild)) |
7ab12479 JB |
1785 | { |
1786 | lastright = left = XFASTINT (w->left); | |
1787 | lastoright = 0; | |
265a9e55 | 1788 | for (child = w->hchild; !NILP (child); child = c->next) |
7ab12479 JB |
1789 | { |
1790 | c = XWINDOW (child); | |
1791 | ||
1792 | opos = lastoright + XFASTINT (c->width); | |
1793 | ||
d834a2e9 | 1794 | XSETFASTINT (c->left, lastright); |
7ab12479 JB |
1795 | |
1796 | pos = (((opos * width) << 1) + owidth) / (owidth << 1); | |
1797 | ||
1798 | /* Inhibit deletion for becoming too small */ | |
1799 | set_window_width (child, pos + left - lastright, 1); | |
1800 | ||
1801 | /* Now advance child to next window, | |
1802 | and set lastright if child was not just deleted. */ | |
1803 | lastright = pos + left, lastoright = opos; | |
1804 | } | |
1805 | /* Delete children that became too small */ | |
1806 | if (!nodelete) | |
265a9e55 | 1807 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1808 | { |
1809 | set_window_width (child, XINT (XWINDOW (child)->width), 0); | |
1810 | } | |
1811 | } | |
1812 | } | |
1813 | \f | |
1d8d96fa | 1814 | int window_select_count; |
7ab12479 | 1815 | |
5b03d3c0 RS |
1816 | Lisp_Object |
1817 | Fset_window_buffer_unwind (obuf) | |
1818 | Lisp_Object obuf; | |
1819 | { | |
1820 | Fset_buffer (obuf); | |
1821 | return Qnil; | |
1822 | } | |
1823 | ||
7ab12479 JB |
1824 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 2, 0, |
1825 | "Make WINDOW display BUFFER as its contents.\n\ | |
1826 | BUFFER can be a buffer or buffer name.") | |
1827 | (window, buffer) | |
1828 | register Lisp_Object window, buffer; | |
1829 | { | |
1830 | register Lisp_Object tem; | |
1831 | register struct window *w = decode_window (window); | |
5b03d3c0 | 1832 | int count = specpdl_ptr - specpdl; |
7ab12479 JB |
1833 | |
1834 | buffer = Fget_buffer (buffer); | |
1835 | CHECK_BUFFER (buffer, 1); | |
1836 | ||
265a9e55 | 1837 | if (NILP (XBUFFER (buffer)->name)) |
7ab12479 JB |
1838 | error ("Attempt to display deleted buffer"); |
1839 | ||
1840 | tem = w->buffer; | |
265a9e55 | 1841 | if (NILP (tem)) |
7ab12479 JB |
1842 | error ("Window is deleted"); |
1843 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
1844 | is first being set up. */ | |
1845 | { | |
265a9e55 | 1846 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) |
3cf85532 RS |
1847 | error ("Window is dedicated to `%s'", |
1848 | XSTRING (XBUFFER (tem)->name)->data); | |
7ab12479 JB |
1849 | |
1850 | unshow_buffer (w); | |
1851 | } | |
1852 | ||
1853 | w->buffer = buffer; | |
86e48436 RS |
1854 | |
1855 | if (EQ (window, selected_window)) | |
1856 | XBUFFER (w->buffer)->last_selected_window = window; | |
1857 | ||
d834a2e9 | 1858 | XSETFASTINT (w->window_end_pos, 0); |
5a41ab94 | 1859 | w->window_end_valid = Qnil; |
dba06815 | 1860 | XSETFASTINT (w->hscroll, 0); |
7ab12479 JB |
1861 | Fset_marker (w->pointm, |
1862 | make_number (BUF_PT (XBUFFER (buffer))), | |
1863 | buffer); | |
1864 | set_marker_restricted (w->start, | |
1865 | make_number (XBUFFER (buffer)->last_window_start), | |
1866 | buffer); | |
1867 | w->start_at_line_beg = Qnil; | |
e36ab06b | 1868 | w->force_start = Qnil; |
d834a2e9 | 1869 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1870 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 1871 | windows_or_buffers_changed++; |
5b03d3c0 RS |
1872 | |
1873 | /* We must select BUFFER for running the window-scroll-functions. | |
1874 | If WINDOW is selected, switch permanently. | |
1875 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
1876 | if (EQ (window, selected_window)) |
1877 | Fset_buffer (buffer); | |
5b03d3c0 RS |
1878 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
1879 | because that might itself be a local variable. */ | |
1880 | else if (window_initialized) | |
1881 | { | |
1882 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
1883 | Fset_buffer (buffer); | |
1884 | } | |
1885 | ||
dba06815 RS |
1886 | if (! NILP (Vwindow_scroll_functions)) |
1887 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
1888 | Fmarker_position (w->start)); | |
7ab12479 | 1889 | |
5b03d3c0 RS |
1890 | unbind_to (count, Qnil); |
1891 | ||
7ab12479 JB |
1892 | return Qnil; |
1893 | } | |
1894 | ||
1895 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 1, 0, | |
1896 | "Select WINDOW. Most editing will apply to WINDOW's buffer.\n\ | |
1897 | The main editor command loop selects the buffer of the selected window\n\ | |
1898 | before each command.") | |
1899 | (window) | |
1900 | register Lisp_Object window; | |
1901 | { | |
1902 | register struct window *w; | |
1903 | register struct window *ow = XWINDOW (selected_window); | |
1904 | ||
605be8af | 1905 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1906 | |
1907 | w = XWINDOW (window); | |
1908 | ||
265a9e55 | 1909 | if (NILP (w->buffer)) |
7ab12479 JB |
1910 | error ("Trying to select deleted window or non-leaf window"); |
1911 | ||
d834a2e9 | 1912 | XSETFASTINT (w->use_time, ++window_select_count); |
7ab12479 JB |
1913 | if (EQ (window, selected_window)) |
1914 | return window; | |
1915 | ||
1916 | Fset_marker (ow->pointm, make_number (BUF_PT (XBUFFER (ow->buffer))), | |
1917 | ow->buffer); | |
1918 | ||
1919 | selected_window = window; | |
44fa5b1e | 1920 | if (XFRAME (WINDOW_FRAME (w)) != selected_frame) |
7ab12479 | 1921 | { |
44fa5b1e | 1922 | XFRAME (WINDOW_FRAME (w))->selected_window = window; |
147a6615 RS |
1923 | /* Use this rather than Fhandle_switch_frame |
1924 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
1925 | move around in the state where a minibuffer in a separate | |
1926 | frame is active. */ | |
1927 | Fselect_frame (WINDOW_FRAME (w), Qnil); | |
7ab12479 JB |
1928 | } |
1929 | else | |
44fa5b1e | 1930 | selected_frame->selected_window = window; |
7ab12479 JB |
1931 | |
1932 | record_buffer (w->buffer); | |
1933 | Fset_buffer (w->buffer); | |
1934 | ||
86e48436 RS |
1935 | XBUFFER (w->buffer)->last_selected_window = window; |
1936 | ||
7ab12479 JB |
1937 | /* Go to the point recorded in the window. |
1938 | This is important when the buffer is in more | |
1939 | than one window. It also matters when | |
1940 | redisplay_window has altered point after scrolling, | |
1941 | because it makes the change only in the window. */ | |
1942 | { | |
1943 | register int new_point = marker_position (w->pointm); | |
1944 | if (new_point < BEGV) | |
1945 | SET_PT (BEGV); | |
a9c95e08 | 1946 | else if (new_point > ZV) |
7ab12479 JB |
1947 | SET_PT (ZV); |
1948 | else | |
1949 | SET_PT (new_point); | |
1950 | } | |
1951 | ||
1952 | windows_or_buffers_changed++; | |
1953 | return window; | |
1954 | } | |
1955 | ||
441a127e RS |
1956 | /* Deiconify the frame containing the window WINDOW, |
1957 | unless it is the selected frame; | |
1958 | then return WINDOW. | |
1959 | ||
1960 | The reason for the exception for the selected frame | |
1961 | is that it seems better not to change the selected frames visibility | |
1962 | merely because of displaying a different buffer in it. | |
1963 | The deiconification is useful when a buffer gets shown in | |
1964 | another frame that you were not using lately. */ | |
d07f802a RS |
1965 | |
1966 | static Lisp_Object | |
1967 | display_buffer_1 (window) | |
1968 | Lisp_Object window; | |
1969 | { | |
d07f802a RS |
1970 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (window))); |
1971 | FRAME_SAMPLE_VISIBILITY (f); | |
60117126 RS |
1972 | if (f != selected_frame) |
1973 | { | |
1974 | if (FRAME_ICONIFIED_P (f)) | |
1975 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
37962e60 | 1976 | else if (FRAME_VISIBLE_P (f)) |
60117126 RS |
1977 | Fraise_frame (WINDOW_FRAME (XWINDOW (window))); |
1978 | } | |
d07f802a RS |
1979 | return window; |
1980 | } | |
1981 | ||
4628f7a4 | 1982 | DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, |
6777ae52 | 1983 | "Returns non-nil if a buffer named BUFFER-NAME would be created specially. |
4628f7a4 EN |
1984 | The value is actually t if the frame should be called with default frame |
1985 | parameters, and a list of frame parameters if they were specified. | |
1986 | See `special-display-buffer-names', and `special-display-regexps'.") | |
1987 | (buffer_name) | |
1988 | Lisp_Object buffer_name; | |
1989 | { | |
1990 | Lisp_Object tem; | |
1991 | ||
1992 | CHECK_STRING (buffer_name, 1); | |
1993 | ||
1994 | tem = Fmember (buffer_name, Vspecial_display_buffer_names); | |
1995 | if (!NILP (tem)) | |
1996 | return Qt; | |
1997 | ||
1998 | tem = Fassoc (buffer_name, Vspecial_display_buffer_names); | |
1999 | if (!NILP (tem)) | |
2000 | return XCDR (tem); | |
2001 | ||
2002 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) | |
2003 | { | |
2004 | Lisp_Object car = XCAR (tem); | |
2005 | if (STRINGP (car) | |
2006 | && fast_string_match (car, buffer_name) >= 0) | |
2007 | return Qt; | |
2008 | else if (CONSP (car) | |
2009 | && STRINGP (XCAR (car)) | |
2010 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
2011 | return XCDR (tem); | |
2012 | } | |
2013 | return Qnil; | |
2014 | } | |
2015 | ||
2016 | DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, | |
2017 | "Returns non-nil if a new buffer named BUFFER-NAME would use the same window. | |
2018 | See `same-window-buffer-names' and `same-window-regexps'.") | |
2019 | (buffer_name) | |
2020 | Lisp_Object buffer_name; | |
2021 | { | |
2022 | Lisp_Object tem; | |
2023 | ||
2024 | CHECK_STRING (buffer_name, 1); | |
2025 | ||
2026 | tem = Fmember (buffer_name, Vsame_window_buffer_names); | |
2027 | if (!NILP (tem)) | |
2028 | return Qt; | |
2029 | ||
2030 | tem = Fassoc (buffer_name, Vsame_window_buffer_names); | |
2031 | if (!NILP (tem)) | |
2032 | return Qt; | |
2033 | ||
2034 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) | |
2035 | { | |
2036 | Lisp_Object car = XCAR (tem); | |
2037 | if (STRINGP (car) | |
2038 | && fast_string_match (car, buffer_name) >= 0) | |
2039 | return Qt; | |
2040 | else if (CONSP (car) | |
2041 | && STRINGP (XCAR (car)) | |
2042 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
2043 | return Qt; | |
2044 | } | |
2045 | return Qnil; | |
2046 | } | |
2047 | ||
35aaf00c | 2048 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 2, |
869e65bb | 2049 | "bDisplay buffer: \nP", |
7ab12479 JB |
2050 | "Make BUFFER appear in some window but don't select it.\n\ |
2051 | BUFFER can be a buffer or a buffer name.\n\ | |
2052 | If BUFFER is shown already in some window, just use that one,\n\ | |
2053 | unless the window is the selected window and the optional second\n\ | |
46d3268a | 2054 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg).\n\ |
5141b901 | 2055 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER.\n\ |
5abcf432 RS |
2056 | Returns the window displaying BUFFER.\n\ |
2057 | \n\ | |
2058 | The variables `special-display-buffer-names', `special-display-regexps',\n\ | |
2059 | `same-window-buffer-names', and `same-window-regexps' customize how certain\n\ | |
2060 | buffer names are handled.") | |
7ab12479 JB |
2061 | (buffer, not_this_window) |
2062 | register Lisp_Object buffer, not_this_window; | |
2063 | { | |
a90712c2 | 2064 | register Lisp_Object window, tem; |
7ab12479 JB |
2065 | |
2066 | buffer = Fget_buffer (buffer); | |
2067 | CHECK_BUFFER (buffer, 0); | |
2068 | ||
265a9e55 | 2069 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
2070 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
2071 | ||
265a9e55 | 2072 | if (NILP (not_this_window) |
7ab12479 | 2073 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 2074 | return display_buffer_1 (selected_window); |
7ab12479 | 2075 | |
855d8627 RS |
2076 | /* See if the user has specified this buffer should appear |
2077 | in the selected window. */ | |
2078 | if (NILP (not_this_window)) | |
2079 | { | |
4628f7a4 | 2080 | tem = Fsame_window_p (XBUFFER (buffer)->name); |
855d8627 | 2081 | if (!NILP (tem)) |
c63dc4a2 RS |
2082 | { |
2083 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 2084 | return display_buffer_1 (selected_window); |
c63dc4a2 | 2085 | } |
855d8627 RS |
2086 | } |
2087 | ||
e8edb3ae | 2088 | /* If pop_up_frames, |
73dc5198 KH |
2089 | look for a window showing BUFFER on any visible or iconified frame. |
2090 | Otherwise search only the current frame. */ | |
2091 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
2092 | XSETFASTINT (tem, 0); | |
2093 | else | |
73dc5198 KH |
2094 | XSETFRAME (tem, last_nonminibuf_frame); |
2095 | window = Fget_buffer_window (buffer, tem); | |
265a9e55 JB |
2096 | if (!NILP (window) |
2097 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
f812f9c6 | 2098 | { |
d07f802a | 2099 | return display_buffer_1 (window); |
f812f9c6 | 2100 | } |
7ab12479 | 2101 | |
a90712c2 | 2102 | /* Certain buffer names get special handling. */ |
4628f7a4 | 2103 | if (!NILP (Vspecial_display_function)) |
a90712c2 | 2104 | { |
4628f7a4 EN |
2105 | tem = Fspecial_display_p (XBUFFER (buffer)->name); |
2106 | if (EQ (tem, Qt)) | |
a90712c2 | 2107 | return call1 (Vspecial_display_function, buffer); |
4628f7a4 EN |
2108 | if (CONSP (tem)) |
2109 | return call2 (Vspecial_display_function, buffer, tem); | |
a90712c2 RS |
2110 | } |
2111 | ||
44fa5b1e JB |
2112 | /* If there are no frames open that have more than a minibuffer, |
2113 | we need to create a new frame. */ | |
2114 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 2115 | { |
a90712c2 | 2116 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
7ab12479 | 2117 | Fset_window_buffer (window, buffer); |
d07f802a | 2118 | return display_buffer_1 (window); |
7ab12479 | 2119 | } |
7ab12479 | 2120 | |
43bad991 | 2121 | if (pop_up_windows |
44fa5b1e | 2122 | || FRAME_MINIBUF_ONLY_P (selected_frame) |
cee67da9 RS |
2123 | /* If the current frame is a special display frame, |
2124 | don't try to reuse its windows. */ | |
2125 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->dedicated) | |
43bad991 | 2126 | ) |
7ab12479 | 2127 | { |
12cae7c0 KH |
2128 | Lisp_Object frames; |
2129 | ||
37962e60 | 2130 | frames = Qnil; |
44fa5b1e | 2131 | if (FRAME_MINIBUF_ONLY_P (selected_frame)) |
74112613 | 2132 | XSETFRAME (frames, last_nonminibuf_frame); |
7ab12479 JB |
2133 | /* Don't try to create a window if would get an error */ |
2134 | if (split_height_threshold < window_min_height << 1) | |
2135 | split_height_threshold = window_min_height << 1; | |
2136 | ||
cee67da9 RS |
2137 | /* Note that both Fget_largest_window and Fget_lru_window |
2138 | ignore minibuffers and dedicated windows. | |
2139 | This means they can return nil. */ | |
7ab12479 | 2140 | |
cee67da9 RS |
2141 | /* If the frame we would try to split cannot be split, |
2142 | try other frames. */ | |
2143 | if (FRAME_NO_SPLIT_P (NILP (frames) ? selected_frame | |
2144 | : last_nonminibuf_frame)) | |
2145 | { | |
2146 | /* Try visible frames first. */ | |
2147 | window = Fget_largest_window (Qvisible); | |
2148 | /* If that didn't work, try iconified frames. */ | |
2149 | if (NILP (window)) | |
2150 | window = Fget_largest_window (make_number (0)); | |
2151 | if (NILP (window)) | |
2152 | window = Fget_largest_window (Qt); | |
2153 | } | |
2154 | else | |
2155 | window = Fget_largest_window (frames); | |
2156 | ||
92cca945 RS |
2157 | /* If we got a tall enough full-width window that can be split, |
2158 | split it. */ | |
265a9e55 | 2159 | if (!NILP (window) |
92cca945 | 2160 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ab12479 | 2161 | && window_height (window) >= split_height_threshold |
111e5992 | 2162 | && WINDOW_FULL_WIDTH_P (XWINDOW (window))) |
7ab12479 JB |
2163 | window = Fsplit_window (window, Qnil, Qnil); |
2164 | else | |
2165 | { | |
1942f68f RS |
2166 | Lisp_Object upper, lower, other; |
2167 | ||
44fa5b1e | 2168 | window = Fget_lru_window (frames); |
92cca945 RS |
2169 | /* If the LRU window is selected, and big enough, |
2170 | and can be split, split it. */ | |
cee67da9 | 2171 | if (!NILP (window) |
92cca945 | 2172 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
cee67da9 RS |
2173 | && (EQ (window, selected_window) |
2174 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
2175 | && window_height (window) >= window_min_height << 1) |
2176 | window = Fsplit_window (window, Qnil, Qnil); | |
cee67da9 RS |
2177 | /* If Fget_lru_window returned nil, try other approaches. */ |
2178 | /* Try visible frames first. */ | |
2179 | if (NILP (window)) | |
2180 | window = Fget_largest_window (Qvisible); | |
2181 | /* If that didn't work, try iconified frames. */ | |
2182 | if (NILP (window)) | |
2183 | window = Fget_largest_window (make_number (0)); | |
2184 | /* Try invisible frames. */ | |
2185 | if (NILP (window)) | |
2186 | window = Fget_largest_window (Qt); | |
2187 | /* As a last resort, make a new frame. */ | |
2188 | if (NILP (window)) | |
2189 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
2190 | /* If window appears above or below another, |
2191 | even out their heights. */ | |
cac66e4f | 2192 | other = upper = lower = Qnil; |
1942f68f RS |
2193 | if (!NILP (XWINDOW (window)->prev)) |
2194 | other = upper = XWINDOW (window)->prev, lower = window; | |
2195 | if (!NILP (XWINDOW (window)->next)) | |
2196 | other = lower = XWINDOW (window)->next, upper = window; | |
2197 | if (!NILP (other) | |
2198 | /* Check that OTHER and WINDOW are vertically arrayed. */ | |
2199 | && XWINDOW (other)->top != XWINDOW (window)->top | |
2200 | && XWINDOW (other)->height > XWINDOW (window)->height) | |
2201 | { | |
2202 | int total = XWINDOW (other)->height + XWINDOW (window)->height; | |
8d77c0c8 KH |
2203 | Lisp_Object old_selected_window; |
2204 | old_selected_window = selected_window; | |
1942f68f | 2205 | |
8d77c0c8 | 2206 | selected_window = upper; |
1942f68f RS |
2207 | change_window_height (total / 2 - XWINDOW (upper)->height, 0); |
2208 | selected_window = old_selected_window; | |
2209 | } | |
7ab12479 JB |
2210 | } |
2211 | } | |
2212 | else | |
2213 | window = Fget_lru_window (Qnil); | |
2214 | ||
2215 | Fset_window_buffer (window, buffer); | |
d07f802a | 2216 | return display_buffer_1 (window); |
7ab12479 JB |
2217 | } |
2218 | ||
2219 | void | |
2220 | temp_output_buffer_show (buf) | |
2221 | register Lisp_Object buf; | |
2222 | { | |
2223 | register struct buffer *old = current_buffer; | |
2224 | register Lisp_Object window; | |
2225 | register struct window *w; | |
2226 | ||
2227 | Fset_buffer (buf); | |
c6367666 | 2228 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
2229 | BEGV = BEG; |
2230 | ZV = Z; | |
2231 | SET_PT (BEG); | |
1479ef51 | 2232 | XBUFFER (buf)->clip_changed = 1; |
7ab12479 JB |
2233 | set_buffer_internal (old); |
2234 | ||
2235 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
2236 | call1 (Vtemp_buffer_show_function, buf); | |
2237 | else | |
2238 | { | |
2239 | window = Fdisplay_buffer (buf, Qnil); | |
2240 | ||
44fa5b1e JB |
2241 | if (XFRAME (XWINDOW (window)->frame) != selected_frame) |
2242 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
7ab12479 JB |
2243 | Vminibuf_scroll_window = window; |
2244 | w = XWINDOW (window); | |
d834a2e9 | 2245 | XSETFASTINT (w->hscroll, 0); |
7ab12479 JB |
2246 | set_marker_restricted (w->start, make_number (1), buf); |
2247 | set_marker_restricted (w->pointm, make_number (1), buf); | |
a58ec57d | 2248 | |
37962e60 | 2249 | /* Run temp-buffer-show-hook, with the chosen window selected. */ |
f52cca03 | 2250 | if (!NILP (Vrun_hooks)) |
2cccc823 | 2251 | { |
f52cca03 RS |
2252 | Lisp_Object tem; |
2253 | tem = Fboundp (Qtemp_buffer_show_hook); | |
2cccc823 RS |
2254 | if (!NILP (tem)) |
2255 | { | |
f52cca03 RS |
2256 | tem = Fsymbol_value (Qtemp_buffer_show_hook); |
2257 | if (!NILP (tem)) | |
2258 | { | |
2259 | int count = specpdl_ptr - specpdl; | |
2cccc823 | 2260 | |
f52cca03 RS |
2261 | /* Select the window that was chosen, for running the hook. */ |
2262 | record_unwind_protect (Fset_window_configuration, | |
2263 | Fcurrent_window_configuration (Qnil)); | |
2cccc823 | 2264 | |
f52cca03 RS |
2265 | Fselect_window (window); |
2266 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); | |
2267 | unbind_to (count, Qnil); | |
2268 | } | |
2cccc823 RS |
2269 | } |
2270 | } | |
2271 | } | |
7ab12479 JB |
2272 | } |
2273 | \f | |
2274 | static | |
2275 | make_dummy_parent (window) | |
2276 | Lisp_Object window; | |
2277 | { | |
cffec418 | 2278 | Lisp_Object new; |
7ab12479 | 2279 | register struct window *o, *p; |
cffec418 KH |
2280 | register struct Lisp_Vector *vec; |
2281 | int i; | |
7ab12479 | 2282 | |
cffec418 KH |
2283 | o = XWINDOW (window); |
2284 | vec = allocate_vectorlike ((EMACS_INT)VECSIZE (struct window)); | |
2285 | for (i = 0; i < VECSIZE (struct window); ++i) | |
2286 | vec->contents[i] = ((struct Lisp_Vector *)o)->contents[i]; | |
2287 | vec->size = VECSIZE (struct window); | |
2288 | p = (struct window *)vec; | |
2289 | XSETWINDOW (new, p); | |
7ab12479 | 2290 | |
d834a2e9 | 2291 | XSETFASTINT (p->sequence_number, ++sequence_number); |
7ab12479 JB |
2292 | |
2293 | /* Put new into window structure in place of window */ | |
2294 | replace_window (window, new); | |
2295 | ||
2296 | o->next = Qnil; | |
2297 | o->prev = Qnil; | |
2298 | o->vchild = Qnil; | |
2299 | o->hchild = Qnil; | |
2300 | o->parent = new; | |
2301 | ||
2302 | p->start = Qnil; | |
2303 | p->pointm = Qnil; | |
2304 | p->buffer = Qnil; | |
2305 | } | |
2306 | ||
2307 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
2308 | "Split WINDOW, putting SIZE lines in the first of the pair.\n\ | |
2309 | WINDOW defaults to selected one and SIZE to half its size.\n\ | |
77ae0fe3 | 2310 | If optional third arg HORFLAG is non-nil, split side by side\n\ |
7ab12479 | 2311 | and put SIZE columns in the first of the pair.") |
77ae0fe3 KH |
2312 | (window, size, horflag) |
2313 | Lisp_Object window, size, horflag; | |
7ab12479 JB |
2314 | { |
2315 | register Lisp_Object new; | |
2316 | register struct window *o, *p; | |
c0807608 | 2317 | FRAME_PTR fo; |
77ae0fe3 | 2318 | register int size_int; |
7ab12479 | 2319 | |
265a9e55 | 2320 | if (NILP (window)) |
7ab12479 JB |
2321 | window = selected_window; |
2322 | else | |
605be8af | 2323 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
2324 | |
2325 | o = XWINDOW (window); | |
c0807608 | 2326 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 2327 | |
77ae0fe3 | 2328 | if (NILP (size)) |
7ab12479 | 2329 | { |
265a9e55 | 2330 | if (!NILP (horflag)) |
c0807608 KH |
2331 | /* Calculate the size of the left-hand window, by dividing |
2332 | the usable space in columns by two. */ | |
a59fed7e | 2333 | size_int = XFASTINT (o->width) >> 1; |
7ab12479 | 2334 | else |
77ae0fe3 | 2335 | size_int = XFASTINT (o->height) >> 1; |
7ab12479 JB |
2336 | } |
2337 | else | |
2338 | { | |
77ae0fe3 KH |
2339 | CHECK_NUMBER (size, 1); |
2340 | size_int = XINT (size); | |
7ab12479 JB |
2341 | } |
2342 | ||
2343 | if (MINI_WINDOW_P (o)) | |
2344 | error ("Attempt to split minibuffer window"); | |
c0807608 | 2345 | else if (FRAME_NO_SPLIT_P (fo)) |
44fa5b1e | 2346 | error ("Attempt to split unsplittable frame"); |
7ab12479 | 2347 | |
a481b3ea | 2348 | check_min_window_sizes (); |
7ab12479 | 2349 | |
265a9e55 | 2350 | if (NILP (horflag)) |
7ab12479 | 2351 | { |
77ae0fe3 KH |
2352 | if (size_int < window_min_height) |
2353 | error ("Window height %d too small (after splitting)", size_int); | |
2354 | if (size_int + window_min_height > XFASTINT (o->height)) | |
37962e60 | 2355 | error ("Window height %d too small (after splitting)", |
77ae0fe3 | 2356 | XFASTINT (o->height) - size_int); |
265a9e55 JB |
2357 | if (NILP (o->parent) |
2358 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
2359 | { |
2360 | make_dummy_parent (window); | |
2361 | new = o->parent; | |
2362 | XWINDOW (new)->vchild = window; | |
2363 | } | |
2364 | } | |
2365 | else | |
2366 | { | |
77ae0fe3 KH |
2367 | if (size_int < window_min_width) |
2368 | error ("Window width %d too small (after splitting)", size_int); | |
a59fed7e RS |
2369 | |
2370 | if (size_int + window_min_width > XFASTINT (o->width)) | |
37962e60 | 2371 | error ("Window width %d too small (after splitting)", |
a59fed7e | 2372 | XFASTINT (o->width) - size_int); |
265a9e55 JB |
2373 | if (NILP (o->parent) |
2374 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
2375 | { |
2376 | make_dummy_parent (window); | |
2377 | new = o->parent; | |
2378 | XWINDOW (new)->hchild = window; | |
2379 | } | |
2380 | } | |
2381 | ||
2382 | /* Now we know that window's parent is a vertical combination | |
2383 | if we are dividing vertically, or a horizontal combination | |
2384 | if we are making side-by-side windows */ | |
2385 | ||
2386 | windows_or_buffers_changed++; | |
c0807608 | 2387 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
2388 | new = make_window (); |
2389 | p = XWINDOW (new); | |
2390 | ||
44fa5b1e | 2391 | p->frame = o->frame; |
7ab12479 | 2392 | p->next = o->next; |
265a9e55 | 2393 | if (!NILP (p->next)) |
7ab12479 JB |
2394 | XWINDOW (p->next)->prev = new; |
2395 | p->prev = window; | |
2396 | o->next = new; | |
2397 | p->parent = o->parent; | |
2398 | p->buffer = Qt; | |
2399 | ||
2400 | Fset_window_buffer (new, o->buffer); | |
2401 | ||
44fa5b1e | 2402 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 2403 | |
265a9e55 | 2404 | if (!NILP (horflag)) |
7ab12479 JB |
2405 | { |
2406 | p->height = o->height; | |
2407 | p->top = o->top; | |
a59fed7e | 2408 | XSETFASTINT (p->width, XFASTINT (o->width) - size_int); |
77ae0fe3 KH |
2409 | XSETFASTINT (o->width, size_int); |
2410 | XSETFASTINT (p->left, XFASTINT (o->left) + size_int); | |
7ab12479 JB |
2411 | } |
2412 | else | |
2413 | { | |
2414 | p->left = o->left; | |
2415 | p->width = o->width; | |
77ae0fe3 KH |
2416 | XSETFASTINT (p->height, XFASTINT (o->height) - size_int); |
2417 | XSETFASTINT (o->height, size_int); | |
2418 | XSETFASTINT (p->top, XFASTINT (o->top) + size_int); | |
7ab12479 JB |
2419 | } |
2420 | ||
2421 | return new; | |
2422 | } | |
2423 | \f | |
2424 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", | |
2425 | "Make current window ARG lines bigger.\n\ | |
2426 | From program, optional second arg non-nil means grow sideways ARG columns.") | |
413430c5 EN |
2427 | (arg, side) |
2428 | register Lisp_Object arg, side; | |
7ab12479 | 2429 | { |
413430c5 EN |
2430 | CHECK_NUMBER (arg, 0); |
2431 | change_window_height (XINT (arg), !NILP (side)); | |
7ab12479 JB |
2432 | return Qnil; |
2433 | } | |
2434 | ||
2435 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", | |
2436 | "Make current window ARG lines smaller.\n\ | |
413430c5 EN |
2437 | From program, optional second arg non-nil means shrink sideways arg columns.") |
2438 | (arg, side) | |
2439 | register Lisp_Object arg, side; | |
7ab12479 | 2440 | { |
413430c5 EN |
2441 | CHECK_NUMBER (arg, 0); |
2442 | change_window_height (-XINT (arg), !NILP (side)); | |
7ab12479 JB |
2443 | return Qnil; |
2444 | } | |
2445 | ||
2446 | int | |
2447 | window_height (window) | |
2448 | Lisp_Object window; | |
2449 | { | |
2450 | register struct window *p = XWINDOW (window); | |
2451 | return XFASTINT (p->height); | |
2452 | } | |
2453 | ||
2454 | int | |
2455 | window_width (window) | |
2456 | Lisp_Object window; | |
2457 | { | |
2458 | register struct window *p = XWINDOW (window); | |
2459 | return XFASTINT (p->width); | |
2460 | } | |
2461 | ||
05c2896a JB |
2462 | #define MINSIZE(w) \ |
2463 | (widthflag \ | |
2464 | ? window_min_width \ | |
2465 | : (MINI_WINDOW_P (XWINDOW (w)) ? 1 : window_min_height)) | |
7ab12479 JB |
2466 | |
2467 | #define CURBEG(w) \ | |
05c2896a | 2468 | *(widthflag ? (int *) &(XWINDOW (w)->left) : (int *) &(XWINDOW (w)->top)) |
7ab12479 JB |
2469 | |
2470 | #define CURSIZE(w) \ | |
05c2896a | 2471 | *(widthflag ? (int *) &(XWINDOW (w)->width) : (int *) &(XWINDOW (w)->height)) |
7ab12479 JB |
2472 | |
2473 | /* Unlike set_window_height, this function | |
2474 | also changes the heights of the siblings so as to | |
2475 | keep everything consistent. */ | |
2476 | ||
2477 | change_window_height (delta, widthflag) | |
2478 | register int delta; | |
2479 | int widthflag; | |
2480 | { | |
2481 | register Lisp_Object parent; | |
2482 | Lisp_Object window; | |
2483 | register struct window *p; | |
2484 | int *sizep; | |
2485 | int (*sizefun) () = widthflag ? window_width : window_height; | |
2486 | register int (*setsizefun) () = (widthflag | |
2487 | ? set_window_width | |
2488 | : set_window_height); | |
2489 | ||
a481b3ea | 2490 | check_min_window_sizes (); |
7ab12479 JB |
2491 | |
2492 | window = selected_window; | |
2493 | while (1) | |
2494 | { | |
2495 | p = XWINDOW (window); | |
2496 | parent = p->parent; | |
265a9e55 | 2497 | if (NILP (parent)) |
7ab12479 JB |
2498 | { |
2499 | if (widthflag) | |
2500 | error ("No other window to side of this one"); | |
2501 | break; | |
2502 | } | |
265a9e55 JB |
2503 | if (widthflag ? !NILP (XWINDOW (parent)->hchild) |
2504 | : !NILP (XWINDOW (parent)->vchild)) | |
7ab12479 JB |
2505 | break; |
2506 | window = parent; | |
2507 | } | |
2508 | ||
05c2896a | 2509 | sizep = &CURSIZE (window); |
7ab12479 | 2510 | |
7ab12479 JB |
2511 | { |
2512 | register int maxdelta; | |
7ab12479 | 2513 | |
265a9e55 JB |
2514 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - *sizep |
2515 | : !NILP (p->next) ? (*sizefun) (p->next) - MINSIZE (p->next) | |
2516 | : !NILP (p->prev) ? (*sizefun) (p->prev) - MINSIZE (p->prev) | |
44fa5b1e JB |
2517 | /* This is a frame with only one window, a minibuffer-only |
2518 | or a minibufferless frame. */ | |
d5783c40 | 2519 | : (delta = 0)); |
7ab12479 JB |
2520 | |
2521 | if (delta > maxdelta) | |
2522 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
2523 | the full frame, or make the only window aside from the |
2524 | minibuffer the full frame. */ | |
7ab12479 | 2525 | delta = maxdelta; |
6b54027b | 2526 | } |
d5783c40 | 2527 | |
6b54027b RS |
2528 | if (*sizep + delta < MINSIZE (window)) |
2529 | { | |
2530 | Fdelete_window (window); | |
d5783c40 | 2531 | return; |
6b54027b RS |
2532 | } |
2533 | ||
2534 | if (delta == 0) | |
2535 | return; | |
7ab12479 | 2536 | |
6b54027b RS |
2537 | if (!NILP (p->next) |
2538 | && (*sizefun) (p->next) - delta >= MINSIZE (p->next)) | |
7ab12479 JB |
2539 | { |
2540 | (*setsizefun) (p->next, (*sizefun) (p->next) - delta, 0); | |
2541 | (*setsizefun) (window, *sizep + delta, 0); | |
05c2896a | 2542 | CURBEG (p->next) += delta; |
7ab12479 JB |
2543 | /* This does not change size of p->next, |
2544 | but it propagates the new top edge to its children */ | |
2545 | (*setsizefun) (p->next, (*sizefun) (p->next), 0); | |
2546 | } | |
6b54027b RS |
2547 | else if (!NILP (p->prev) |
2548 | && (*sizefun) (p->prev) - delta >= MINSIZE (p->prev)) | |
7ab12479 JB |
2549 | { |
2550 | (*setsizefun) (p->prev, (*sizefun) (p->prev) - delta, 0); | |
05c2896a | 2551 | CURBEG (window) -= delta; |
7ab12479 JB |
2552 | (*setsizefun) (window, *sizep + delta, 0); |
2553 | } | |
2554 | else | |
2555 | { | |
2556 | register int delta1; | |
2557 | register int opht = (*sizefun) (parent); | |
2558 | ||
2559 | /* If trying to grow this window to or beyond size of the parent, | |
2560 | make delta1 so big that, on shrinking back down, | |
2561 | all the siblings end up with less than one line and are deleted. */ | |
2562 | if (opht <= *sizep + delta) | |
2563 | delta1 = opht * opht * 2; | |
2564 | /* Otherwise, make delta1 just right so that if we add delta1 | |
2565 | lines to this window and to the parent, and then shrink | |
2566 | the parent back to its original size, the new proportional | |
2567 | size of this window will increase by delta. */ | |
2568 | else | |
2569 | delta1 = (delta * opht * 100) / ((opht - *sizep - delta) * 100); | |
2570 | ||
2571 | /* Add delta1 lines or columns to this window, and to the parent, | |
2572 | keeping things consistent while not affecting siblings. */ | |
05c2896a | 2573 | CURSIZE (parent) = opht + delta1; |
7ab12479 JB |
2574 | (*setsizefun) (window, *sizep + delta1, 0); |
2575 | ||
2576 | /* Squeeze out delta1 lines or columns from our parent, | |
2577 | shriking this window and siblings proportionately. | |
2578 | This brings parent back to correct size. | |
2579 | Delta1 was calculated so this makes this window the desired size, | |
2580 | taking it all out of the siblings. */ | |
2581 | (*setsizefun) (parent, opht, 0); | |
2582 | } | |
2583 | ||
d834a2e9 | 2584 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 2585 | XSETFASTINT (p->last_overlay_modified, 0); |
7ab12479 JB |
2586 | } |
2587 | #undef MINSIZE | |
2588 | #undef CURBEG | |
2589 | #undef CURSIZE | |
2590 | ||
2591 | \f | |
2592 | /* Return number of lines of text (not counting mode line) in W. */ | |
2593 | ||
2594 | int | |
2595 | window_internal_height (w) | |
2596 | struct window *w; | |
2597 | { | |
2598 | int ht = XFASTINT (w->height); | |
2599 | ||
2600 | if (MINI_WINDOW_P (w)) | |
2601 | return ht; | |
2602 | ||
265a9e55 JB |
2603 | if (!NILP (w->parent) || !NILP (w->vchild) || !NILP (w->hchild) |
2604 | || !NILP (w->next) || !NILP (w->prev) | |
44fa5b1e | 2605 | || FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME (w)))) |
7ab12479 JB |
2606 | return ht - 1; |
2607 | ||
2608 | return ht; | |
2609 | } | |
2610 | ||
535e0b8e JB |
2611 | |
2612 | /* Return the number of columns in W. | |
a3c87d4e | 2613 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e JB |
2614 | separating W from the sibling to its right. */ |
2615 | int | |
2616 | window_internal_width (w) | |
2617 | struct window *w; | |
2618 | { | |
2619 | FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); | |
535e0b8e JB |
2620 | int width = XINT (w->width); |
2621 | ||
a3c87d4e JB |
2622 | /* Scroll bars occupy a few columns. */ |
2623 | if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)) | |
ca0d0bb9 | 2624 | return width - FRAME_SCROLL_BAR_COLS (f); |
535e0b8e JB |
2625 | |
2626 | /* The column of `|' characters separating side-by-side windows | |
2627 | occupies one column only. */ | |
111e5992 RS |
2628 | if (!WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) |
2629 | return width - 1; | |
2630 | ||
2631 | return width; | |
535e0b8e JB |
2632 | } |
2633 | ||
2634 | ||
7ab12479 JB |
2635 | /* Scroll contents of window WINDOW up N lines. */ |
2636 | ||
2637 | void | |
f8026fd8 | 2638 | window_scroll (window, n, noerror) |
7ab12479 JB |
2639 | Lisp_Object window; |
2640 | int n; | |
f8026fd8 | 2641 | int noerror; |
7ab12479 JB |
2642 | { |
2643 | register struct window *w = XWINDOW (window); | |
5ce7b543 | 2644 | register int opoint = PT; |
7ab12479 JB |
2645 | register int pos; |
2646 | register int ht = window_internal_height (w); | |
2647 | register Lisp_Object tem; | |
2648 | int lose; | |
2649 | Lisp_Object bolp, nmoved; | |
2650 | ||
0a1f771a | 2651 | /* Always set force_start so that redisplay_window will run |
b4d57b9d | 2652 | the window-scroll-functions. */ |
0a1f771a RS |
2653 | w->force_start = Qt; |
2654 | ||
d834a2e9 | 2655 | XSETFASTINT (tem, PT); |
7ab12479 JB |
2656 | tem = Fpos_visible_in_window_p (tem, window); |
2657 | ||
265a9e55 | 2658 | if (NILP (tem)) |
7ab12479 | 2659 | { |
cd2be1dd | 2660 | Fvertical_motion (make_number (- (ht / 2)), window); |
d834a2e9 | 2661 | XSETFASTINT (tem, PT); |
7ab12479 | 2662 | Fset_marker (w->start, tem, w->buffer); |
7ab12479 JB |
2663 | } |
2664 | ||
2665 | SET_PT (marker_position (w->start)); | |
5ce7b543 | 2666 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 2667 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 2668 | pos = PT; |
7ab12479 JB |
2669 | bolp = Fbolp (); |
2670 | SET_PT (opoint); | |
2671 | ||
2672 | if (lose) | |
f8026fd8 JB |
2673 | { |
2674 | if (noerror) | |
2675 | return; | |
2676 | else | |
2677 | Fsignal (Qbeginning_of_buffer, Qnil); | |
2678 | } | |
7ab12479 JB |
2679 | |
2680 | if (pos < ZV) | |
7ab12479 JB |
2681 | { |
2682 | set_marker_restricted (w->start, make_number (pos), w->buffer); | |
2683 | w->start_at_line_beg = bolp; | |
2684 | w->update_mode_line = Qt; | |
d834a2e9 | 2685 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 2686 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 JB |
2687 | if (pos > opoint) |
2688 | SET_PT (pos); | |
2689 | if (n < 0) | |
2690 | { | |
2691 | SET_PT (pos); | |
540b6aa0 | 2692 | tem = Fvertical_motion (make_number (ht), window); |
5ce7b543 | 2693 | if (PT > opoint || XFASTINT (tem) < ht) |
7ab12479 JB |
2694 | SET_PT (opoint); |
2695 | else | |
540b6aa0 | 2696 | Fvertical_motion (make_number (-1), window); |
7ab12479 JB |
2697 | } |
2698 | } | |
2699 | else | |
f8026fd8 JB |
2700 | { |
2701 | if (noerror) | |
2702 | return; | |
2703 | else | |
2704 | Fsignal (Qend_of_buffer, Qnil); | |
2705 | } | |
7ab12479 JB |
2706 | } |
2707 | \f | |
2708 | /* This is the guts of Fscroll_up and Fscroll_down. */ | |
2709 | ||
2710 | static void | |
2711 | scroll_command (n, direction) | |
2712 | register Lisp_Object n; | |
2713 | int direction; | |
2714 | { | |
2715 | register int defalt; | |
2716 | int count = specpdl_ptr - specpdl; | |
2717 | ||
95605e15 JB |
2718 | /* If selected window's buffer isn't current, make it current for the moment. |
2719 | But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 2720 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
2721 | { |
2722 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
2723 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
2724 | } | |
7ab12479 JB |
2725 | |
2726 | defalt = (window_internal_height (XWINDOW (selected_window)) | |
2727 | - next_screen_context_lines); | |
2728 | defalt = direction * (defalt < 1 ? 1 : defalt); | |
2729 | ||
265a9e55 | 2730 | if (NILP (n)) |
f8026fd8 | 2731 | window_scroll (selected_window, defalt, 0); |
7ab12479 | 2732 | else if (EQ (n, Qminus)) |
f8026fd8 | 2733 | window_scroll (selected_window, - defalt, 0); |
7ab12479 JB |
2734 | else |
2735 | { | |
2736 | n = Fprefix_numeric_value (n); | |
f8026fd8 | 2737 | window_scroll (selected_window, XINT (n) * direction, 0); |
7ab12479 | 2738 | } |
95605e15 JB |
2739 | |
2740 | unbind_to (count, Qnil); | |
7ab12479 JB |
2741 | } |
2742 | ||
2743 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
2744 | "Scroll text of current window upward ARG lines; or near full screen if no ARG.\n\ | |
2745 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
279e0e0c | 2746 | Negative ARG means scroll downward.\n\ |
7ab12479 | 2747 | When calling from a program, supply a number as argument or nil.") |
413430c5 EN |
2748 | (arg) |
2749 | Lisp_Object arg; | |
7ab12479 | 2750 | { |
413430c5 | 2751 | scroll_command (arg, 1); |
7ab12479 JB |
2752 | return Qnil; |
2753 | } | |
2754 | ||
2755 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
2756 | "Scroll text of current window downward ARG lines; or near full screen if no ARG.\n\ | |
2757 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
279e0e0c | 2758 | Negative ARG means scroll upward.\n\ |
7ab12479 | 2759 | When calling from a program, supply a number as argument or nil.") |
413430c5 EN |
2760 | (arg) |
2761 | Lisp_Object arg; | |
7ab12479 | 2762 | { |
413430c5 | 2763 | scroll_command (arg, -1); |
7ab12479 JB |
2764 | return Qnil; |
2765 | } | |
ccd0664b RS |
2766 | \f |
2767 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
2768 | "Return the other window for \"other window scroll\" commands.\n\ | |
77b24de6 | 2769 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ |
ccd0664b RS |
2770 | specifies the window.\n\ |
2771 | If `other-window-scroll-buffer' is non-nil, a window\n\ | |
2772 | showing that buffer is used.") | |
eb16ec06 | 2773 | () |
7ab12479 | 2774 | { |
ccd0664b | 2775 | Lisp_Object window; |
7ab12479 JB |
2776 | |
2777 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 2778 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
2779 | window = Vminibuf_scroll_window; |
2780 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 2781 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
2782 | { |
2783 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 2784 | if (NILP (window)) |
7ab12479 JB |
2785 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt); |
2786 | } | |
2787 | else | |
dbc4e1c1 JB |
2788 | { |
2789 | /* Nothing specified; look for a neighboring window on the same | |
2790 | frame. */ | |
2791 | window = Fnext_window (selected_window, Qnil, Qnil); | |
2792 | ||
2793 | if (EQ (window, selected_window)) | |
2794 | /* That didn't get us anywhere; look for a window on another | |
2795 | visible frame. */ | |
2796 | do | |
2797 | window = Fnext_window (window, Qnil, Qt); | |
2798 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
2799 | && ! EQ (window, selected_window)); | |
2800 | } | |
2801 | ||
605be8af | 2802 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
2803 | |
2804 | if (EQ (window, selected_window)) | |
2805 | error ("There is no other window"); | |
2806 | ||
ccd0664b RS |
2807 | return window; |
2808 | } | |
2809 | ||
2810 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
2811 | "Scroll next window upward ARG lines; or near full screen if no ARG.\n\ | |
2812 | The next window is the one below the current one; or the one at the top\n\ | |
2813 | if the current one is at the bottom. Negative ARG means scroll downward.\n\ | |
2814 | When calling from a program, supply a number as argument or nil.\n\ | |
2815 | \n\ | |
2816 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ | |
2817 | specifies the window to scroll.\n\ | |
2818 | If `other-window-scroll-buffer' is non-nil, scroll the window\n\ | |
2819 | showing that buffer, popping the buffer up if necessary.") | |
413430c5 EN |
2820 | (arg) |
2821 | register Lisp_Object arg; | |
ccd0664b RS |
2822 | { |
2823 | register Lisp_Object window; | |
2f787aa3 | 2824 | register int defalt; |
ccd0664b RS |
2825 | register struct window *w; |
2826 | register int count = specpdl_ptr - specpdl; | |
2827 | ||
2828 | window = Fother_window_for_scrolling (); | |
2829 | ||
7ab12479 | 2830 | w = XWINDOW (window); |
2f787aa3 KH |
2831 | defalt = window_internal_height (w) - next_screen_context_lines; |
2832 | if (defalt < 1) defalt = 1; | |
7ab12479 JB |
2833 | |
2834 | /* Don't screw up if window_scroll gets an error. */ | |
2835 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
2836 | ||
2837 | Fset_buffer (w->buffer); | |
2838 | SET_PT (marker_position (w->pointm)); | |
2839 | ||
413430c5 | 2840 | if (NILP (arg)) |
2f787aa3 | 2841 | window_scroll (window, defalt, 1); |
413430c5 | 2842 | else if (EQ (arg, Qminus)) |
2f787aa3 | 2843 | window_scroll (window, -defalt, 1); |
7ab12479 JB |
2844 | else |
2845 | { | |
413430c5 EN |
2846 | if (CONSP (arg)) |
2847 | arg = Fcar (arg); | |
2848 | CHECK_NUMBER (arg, 0); | |
2849 | window_scroll (window, XINT (arg), 1); | |
7ab12479 JB |
2850 | } |
2851 | ||
5ce7b543 | 2852 | Fset_marker (w->pointm, make_number (PT), Qnil); |
f4e7b2c2 | 2853 | unbind_to (count, Qnil); |
7ab12479 JB |
2854 | |
2855 | return Qnil; | |
2856 | } | |
2857 | \f | |
644b477c | 2858 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 1, "P", |
7ab12479 JB |
2859 | "Scroll selected window display ARG columns left.\n\ |
2860 | Default for ARG is window width minus 2.") | |
2861 | (arg) | |
2862 | register Lisp_Object arg; | |
2863 | { | |
2864 | ||
265a9e55 | 2865 | if (NILP (arg)) |
d834a2e9 | 2866 | XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); |
7ab12479 JB |
2867 | else |
2868 | arg = Fprefix_numeric_value (arg); | |
2869 | ||
2870 | return | |
2871 | Fset_window_hscroll (selected_window, | |
2872 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
2873 | + XINT (arg))); | |
2874 | } | |
2875 | ||
644b477c | 2876 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 1, "P", |
7ab12479 JB |
2877 | "Scroll selected window display ARG columns right.\n\ |
2878 | Default for ARG is window width minus 2.") | |
2879 | (arg) | |
2880 | register Lisp_Object arg; | |
2881 | { | |
265a9e55 | 2882 | if (NILP (arg)) |
d834a2e9 | 2883 | XSETFASTINT (arg, window_internal_width (XWINDOW (selected_window)) - 2); |
7ab12479 JB |
2884 | else |
2885 | arg = Fprefix_numeric_value (arg); | |
2886 | ||
2887 | return | |
2888 | Fset_window_hscroll (selected_window, | |
2889 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
2890 | - XINT (arg))); | |
2891 | } | |
2892 | ||
2893 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", | |
44fa5b1e | 2894 | "Center point in window and redisplay frame. With ARG, put point on line ARG.\n\ |
7ab12479 | 2895 | The desired position of point is always relative to the current window.\n\ |
44fa5b1e | 2896 | Just C-u as prefix means put point in the center of the window.\n\ |
413430c5 | 2897 | If ARG is omitted or nil, erases the entire frame and then\n\ |
44fa5b1e | 2898 | redraws with point in the center of the current window.") |
413430c5 EN |
2899 | (arg) |
2900 | register Lisp_Object arg; | |
7ab12479 JB |
2901 | { |
2902 | register struct window *w = XWINDOW (selected_window); | |
2903 | register int ht = window_internal_height (w); | |
113d9015 | 2904 | struct position pos; |
7ab12479 | 2905 | |
413430c5 | 2906 | if (NILP (arg)) |
7ab12479 | 2907 | { |
44fa5b1e | 2908 | extern int frame_garbaged; |
7ab12479 | 2909 | |
44fa5b1e | 2910 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
413430c5 | 2911 | XSETFASTINT (arg, ht / 2); |
7ab12479 | 2912 | } |
413430c5 | 2913 | else if (CONSP (arg)) /* Just C-u. */ |
7ab12479 | 2914 | { |
413430c5 | 2915 | XSETFASTINT (arg, ht / 2); |
7ab12479 JB |
2916 | } |
2917 | else | |
2918 | { | |
413430c5 EN |
2919 | arg = Fprefix_numeric_value (arg); |
2920 | CHECK_NUMBER (arg, 0); | |
7ab12479 JB |
2921 | } |
2922 | ||
413430c5 EN |
2923 | if (XINT (arg) < 0) |
2924 | XSETINT (arg, XINT (arg) + ht); | |
7ab12479 | 2925 | |
6ec8bbd2 | 2926 | pos = *vmotion (PT, - XINT (arg), w); |
7ab12479 | 2927 | |
113d9015 KH |
2928 | Fset_marker (w->start, make_number (pos.bufpos), w->buffer); |
2929 | w->start_at_line_beg = ((pos.bufpos == BEGV | |
2930 | || FETCH_CHAR (pos.bufpos - 1) == '\n') | |
2931 | ? Qt : Qnil); | |
7ab12479 JB |
2932 | w->force_start = Qt; |
2933 | ||
2934 | return Qnil; | |
2935 | } | |
2936 | \f | |
2937 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
2938 | 1, 1, "P", | |
2939 | "Position point relative to window.\n\ | |
19e3bf0a | 2940 | With no argument, position point at center of window.\n\ |
44fa5b1e | 2941 | An argument specifies frame line; zero means top of window,\n\ |
7ab12479 JB |
2942 | negative means relative to bottom of window.") |
2943 | (arg) | |
2944 | register Lisp_Object arg; | |
2945 | { | |
2946 | register struct window *w = XWINDOW (selected_window); | |
2947 | register int height = window_internal_height (w); | |
2948 | register int start; | |
540b6aa0 | 2949 | Lisp_Object window; |
7ab12479 | 2950 | |
265a9e55 | 2951 | if (NILP (arg)) |
d834a2e9 | 2952 | XSETFASTINT (arg, height / 2); |
7ab12479 JB |
2953 | else |
2954 | { | |
2955 | arg = Fprefix_numeric_value (arg); | |
2956 | if (XINT (arg) < 0) | |
2957 | XSETINT (arg, XINT (arg) + height); | |
2958 | } | |
2959 | ||
2960 | start = marker_position (w->start); | |
74112613 | 2961 | XSETWINDOW (window, w); |
7ab12479 JB |
2962 | if (start < BEGV || start > ZV) |
2963 | { | |
cd2be1dd | 2964 | Fvertical_motion (make_number (- (height / 2)), window); |
5ce7b543 | 2965 | Fset_marker (w->start, make_number (PT), w->buffer); |
7ab12479 JB |
2966 | w->start_at_line_beg = Fbolp (); |
2967 | w->force_start = Qt; | |
2968 | } | |
2969 | else | |
2970 | SET_PT (start); | |
2971 | ||
540b6aa0 | 2972 | return Fvertical_motion (arg, window); |
7ab12479 JB |
2973 | } |
2974 | \f | |
2975 | struct save_window_data | |
2976 | { | |
f5ccc0cc | 2977 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 | 2978 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
8f6ea2e9 | 2979 | Lisp_Object frame_width, frame_height, frame_menu_bar_lines; |
bdc727bf | 2980 | Lisp_Object selected_frame; |
7ab12479 JB |
2981 | Lisp_Object current_window; |
2982 | Lisp_Object current_buffer; | |
2983 | Lisp_Object minibuf_scroll_window; | |
2984 | Lisp_Object root_window; | |
bdc727bf | 2985 | Lisp_Object focus_frame; |
756b6edc RS |
2986 | /* Record the values of window-min-width and window-min-height |
2987 | so that window sizes remain consistent with them. */ | |
2988 | Lisp_Object min_width, min_height; | |
7ab12479 JB |
2989 | /* A vector, interpreted as a struct saved_window */ |
2990 | Lisp_Object saved_windows; | |
2991 | }; | |
ff06df24 | 2992 | |
7ab12479 JB |
2993 | /* This is saved as a Lisp_Vector */ |
2994 | struct saved_window | |
2995 | { | |
2996 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
f5ccc0cc | 2997 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 JB |
2998 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
2999 | ||
3000 | Lisp_Object window; | |
3001 | Lisp_Object buffer, start, pointm, mark; | |
3002 | Lisp_Object left, top, width, height, hscroll; | |
3003 | Lisp_Object parent, prev; | |
3004 | Lisp_Object start_at_line_beg; | |
3005 | Lisp_Object display_table; | |
3006 | }; | |
3007 | #define SAVED_WINDOW_VECTOR_SIZE 14 /* Arg to Fmake_vector */ | |
3008 | ||
3009 | #define SAVED_WINDOW_N(swv,n) \ | |
3010 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
3011 | ||
3012 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
5c4d25a6 | 3013 | "T if OBJECT is a window-configuration object.") |
413430c5 EN |
3014 | (object) |
3015 | Lisp_Object object; | |
7ab12479 | 3016 | { |
413430c5 | 3017 | if (WINDOW_CONFIGURATIONP (object)) |
7ab12479 JB |
3018 | return Qt; |
3019 | return Qnil; | |
3020 | } | |
3021 | ||
3022 | ||
d5b2799e RS |
3023 | DEFUN ("set-window-configuration", Fset_window_configuration, |
3024 | Sset_window_configuration, 1, 1, 0, | |
7ab12479 JB |
3025 | "Set the configuration of windows and buffers as specified by CONFIGURATION.\n\ |
3026 | CONFIGURATION must be a value previously returned\n\ | |
3027 | by `current-window-configuration' (which see).") | |
2f83aebe JB |
3028 | (configuration) |
3029 | Lisp_Object configuration; | |
7ab12479 | 3030 | { |
7ab12479 JB |
3031 | register struct save_window_data *data; |
3032 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 3033 | Lisp_Object new_current_buffer; |
fd482be5 | 3034 | Lisp_Object frame; |
44fa5b1e | 3035 | FRAME_PTR f; |
7ab12479 | 3036 | |
017b2bad | 3037 | while (!WINDOW_CONFIGURATIONP (configuration)) |
7ab12479 | 3038 | { |
2f83aebe JB |
3039 | configuration = wrong_type_argument (intern ("window-configuration-p"), |
3040 | configuration); | |
7ab12479 JB |
3041 | } |
3042 | ||
2f83aebe | 3043 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
3044 | saved_windows = XVECTOR (data->saved_windows); |
3045 | ||
7ab12479 | 3046 | new_current_buffer = data->current_buffer; |
265a9e55 | 3047 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 JB |
3048 | new_current_buffer = Qnil; |
3049 | ||
fd482be5 JB |
3050 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
3051 | f = XFRAME (frame); | |
9ace597f | 3052 | |
fd482be5 JB |
3053 | /* If f is a dead frame, don't bother rebuilding its window tree. |
3054 | However, there is other stuff we should still try to do below. */ | |
3055 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 3056 | { |
fd482be5 JB |
3057 | register struct window *w; |
3058 | register struct saved_window *p; | |
3059 | int k; | |
3060 | ||
3061 | /* If the frame has been resized since this window configuration was | |
3062 | made, we change the frame to the size specified in the | |
3063 | configuration, restore the configuration, and then resize it | |
3064 | back. We keep track of the prevailing height in these variables. */ | |
3065 | int previous_frame_height = FRAME_HEIGHT (f); | |
3066 | int previous_frame_width = FRAME_WIDTH (f); | |
8f6ea2e9 | 3067 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
fd482be5 JB |
3068 | |
3069 | if (XFASTINT (data->frame_height) != previous_frame_height | |
3070 | || XFASTINT (data->frame_width) != previous_frame_width) | |
3071 | change_frame_size (f, data->frame_height, data->frame_width, 0, 0); | |
e3678b64 | 3072 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
3073 | if (XFASTINT (data->frame_menu_bar_lines) |
3074 | != previous_frame_menu_bar_lines) | |
3075 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, 0); | |
217f2871 | 3076 | #endif |
fd482be5 JB |
3077 | |
3078 | windows_or_buffers_changed++; | |
29aeee73 | 3079 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 3080 | |
756b6edc RS |
3081 | /* Temporarily avoid any problems with windows that are smaller |
3082 | than they are supposed to be. */ | |
3083 | window_min_height = 1; | |
3084 | window_min_width = 1; | |
3085 | ||
fd482be5 JB |
3086 | /* Kludge Alert! |
3087 | Mark all windows now on frame as "deleted". | |
3088 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 3089 | |
fd482be5 JB |
3090 | Save their current buffers in their height fields, since we may |
3091 | need it later, if a buffer saved in the configuration is now | |
3092 | dead. */ | |
3093 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
3094 | ||
3095 | for (k = 0; k < saved_windows->size; k++) | |
3096 | { | |
3097 | p = SAVED_WINDOW_N (saved_windows, k); | |
3098 | w = XWINDOW (p->window); | |
3099 | w->next = Qnil; | |
7ab12479 | 3100 | |
fd482be5 JB |
3101 | if (!NILP (p->parent)) |
3102 | w->parent = SAVED_WINDOW_N (saved_windows, | |
3103 | XFASTINT (p->parent))->window; | |
3104 | else | |
3105 | w->parent = Qnil; | |
7ab12479 | 3106 | |
fd482be5 | 3107 | if (!NILP (p->prev)) |
7ab12479 | 3108 | { |
fd482be5 JB |
3109 | w->prev = SAVED_WINDOW_N (saved_windows, |
3110 | XFASTINT (p->prev))->window; | |
3111 | XWINDOW (w->prev)->next = p->window; | |
3112 | } | |
3113 | else | |
3114 | { | |
3115 | w->prev = Qnil; | |
3116 | if (!NILP (w->parent)) | |
3117 | { | |
3118 | if (EQ (p->width, XWINDOW (w->parent)->width)) | |
3119 | { | |
3120 | XWINDOW (w->parent)->vchild = p->window; | |
3121 | XWINDOW (w->parent)->hchild = Qnil; | |
3122 | } | |
3123 | else | |
3124 | { | |
3125 | XWINDOW (w->parent)->hchild = p->window; | |
3126 | XWINDOW (w->parent)->vchild = Qnil; | |
3127 | } | |
3128 | } | |
3129 | } | |
3130 | ||
3131 | /* If we squirreled away the buffer in the window's height, | |
3132 | restore it now. */ | |
017b2bad | 3133 | if (BUFFERP (w->height)) |
fd482be5 JB |
3134 | w->buffer = w->height; |
3135 | w->left = p->left; | |
3136 | w->top = p->top; | |
3137 | w->width = p->width; | |
3138 | w->height = p->height; | |
3139 | w->hscroll = p->hscroll; | |
3140 | w->display_table = p->display_table; | |
d834a2e9 | 3141 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 3142 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
3143 | |
3144 | /* Reinstall the saved buffer and pointers into it. */ | |
3145 | if (NILP (p->buffer)) | |
3146 | w->buffer = p->buffer; | |
3147 | else | |
3148 | { | |
3149 | if (!NILP (XBUFFER (p->buffer)->name)) | |
3150 | /* If saved buffer is alive, install it. */ | |
3151 | { | |
3152 | w->buffer = p->buffer; | |
3153 | w->start_at_line_beg = p->start_at_line_beg; | |
3154 | set_marker_restricted (w->start, | |
3155 | Fmarker_position (p->start), | |
3156 | w->buffer); | |
3157 | set_marker_restricted (w->pointm, | |
3158 | Fmarker_position (p->pointm), | |
3159 | w->buffer); | |
3160 | Fset_marker (XBUFFER (w->buffer)->mark, | |
3161 | Fmarker_position (p->mark), w->buffer); | |
3162 | ||
3163 | /* As documented in Fcurrent_window_configuration, don't | |
3164 | save the location of point in the buffer which was current | |
3165 | when the window configuration was recorded. */ | |
6b54027b RS |
3166 | if (!EQ (p->buffer, new_current_buffer) |
3167 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
3168 | Fgoto_char (w->pointm); |
3169 | } | |
52a68e98 RS |
3170 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
3171 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 3172 | { |
fd482be5 JB |
3173 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
3174 | /* This will set the markers to beginning of visible | |
3175 | range. */ | |
3176 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
3177 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
3178 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
3179 | } |
3180 | else | |
fd482be5 | 3181 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 3182 | are real. */ |
7ab12479 | 3183 | { |
fd482be5 JB |
3184 | /* Set window markers at start of visible range. */ |
3185 | if (XMARKER (w->start)->buffer == 0) | |
3186 | set_marker_restricted (w->start, make_number (0), | |
3187 | w->buffer); | |
3188 | if (XMARKER (w->pointm)->buffer == 0) | |
3189 | set_marker_restricted (w->pointm, | |
3190 | (make_number | |
3191 | (BUF_PT (XBUFFER (w->buffer)))), | |
3192 | w->buffer); | |
3193 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
3194 | } |
3195 | } | |
3196 | } | |
9ace597f | 3197 | |
fd482be5 JB |
3198 | FRAME_ROOT_WINDOW (f) = data->root_window; |
3199 | Fselect_window (data->current_window); | |
7ab12479 | 3200 | |
db269683 | 3201 | if (NILP (data->focus_frame) |
017b2bad | 3202 | || (FRAMEP (data->focus_frame) |
db269683 JB |
3203 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
3204 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 3205 | |
fd482be5 JB |
3206 | #if 0 /* I don't understand why this is needed, and it causes problems |
3207 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 3208 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 RS |
3209 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
3210 | Qnil, 0); | |
fd482be5 JB |
3211 | #endif |
3212 | ||
3213 | /* Set the screen height to the value it had before this function. */ | |
3214 | if (previous_frame_height != FRAME_HEIGHT (f) | |
3215 | || previous_frame_width != FRAME_WIDTH (f)) | |
3216 | change_frame_size (f, previous_frame_height, previous_frame_width, | |
3217 | 0, 0); | |
e3678b64 | 3218 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
3219 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
3220 | x_set_menu_bar_lines (f, previous_frame_menu_bar_lines, 0); | |
217f2871 | 3221 | #endif |
fd482be5 | 3222 | } |
bdc727bf | 3223 | |
756b6edc RS |
3224 | /* Restore the minimum heights recorded in the configuration. */ |
3225 | window_min_height = XINT (data->min_height); | |
3226 | window_min_width = XINT (data->min_width); | |
3227 | ||
bdc727bf | 3228 | /* Fselect_window will have made f the selected frame, so we |
d5b2799e | 3229 | reselect the proper frame here. Fhandle_switch_frame will change the |
bdc727bf JB |
3230 | selected window too, but that doesn't make the call to |
3231 | Fselect_window above totally superfluous; it still sets f's | |
3232 | selected window. */ | |
fd482be5 | 3233 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) |
9a7c6fc3 | 3234 | do_switch_frame (data->selected_frame, Qnil, 0); |
bdc727bf JB |
3235 | |
3236 | if (!NILP (new_current_buffer)) | |
3237 | Fset_buffer (new_current_buffer); | |
3238 | ||
7ab12479 JB |
3239 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3240 | return (Qnil); | |
3241 | } | |
3242 | ||
44fa5b1e | 3243 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
3244 | by setting their buffers to nil. */ |
3245 | ||
fd482be5 | 3246 | void |
7ab12479 JB |
3247 | delete_all_subwindows (w) |
3248 | register struct window *w; | |
3249 | { | |
265a9e55 | 3250 | if (!NILP (w->next)) |
7ab12479 | 3251 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 3252 | if (!NILP (w->vchild)) |
7ab12479 | 3253 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 3254 | if (!NILP (w->hchild)) |
7ab12479 | 3255 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af JB |
3256 | |
3257 | w->height = w->buffer; /* See Fset_window_configuration for excuse. */ | |
3258 | ||
86e48436 RS |
3259 | if (!NILP (w->buffer)) |
3260 | unshow_buffer (w); | |
3261 | ||
605be8af JB |
3262 | /* We set all three of these fields to nil, to make sure that we can |
3263 | distinguish this dead window from any live window. Live leaf | |
3264 | windows will have buffer set, and combination windows will have | |
3265 | vchild or hchild set. */ | |
3266 | w->buffer = Qnil; | |
3267 | w->vchild = Qnil; | |
3268 | w->hchild = Qnil; | |
7ab12479 JB |
3269 | } |
3270 | \f | |
3271 | static int | |
3272 | count_windows (window) | |
3273 | register struct window *window; | |
3274 | { | |
3275 | register int count = 1; | |
265a9e55 | 3276 | if (!NILP (window->next)) |
7ab12479 | 3277 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 3278 | if (!NILP (window->vchild)) |
7ab12479 | 3279 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 3280 | if (!NILP (window->hchild)) |
7ab12479 JB |
3281 | count += count_windows (XWINDOW (window->hchild)); |
3282 | return count; | |
3283 | } | |
3284 | ||
3285 | static int | |
3286 | save_window_save (window, vector, i) | |
3287 | Lisp_Object window; | |
3288 | struct Lisp_Vector *vector; | |
3289 | int i; | |
3290 | { | |
3291 | register struct saved_window *p; | |
3292 | register struct window *w; | |
3293 | register Lisp_Object tem; | |
3294 | ||
265a9e55 | 3295 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
3296 | { |
3297 | p = SAVED_WINDOW_N (vector, i); | |
3298 | w = XWINDOW (window); | |
3299 | ||
d834a2e9 | 3300 | XSETFASTINT (w->temslot, i++); |
7ab12479 JB |
3301 | p->window = window; |
3302 | p->buffer = w->buffer; | |
3303 | p->left = w->left; | |
3304 | p->top = w->top; | |
3305 | p->width = w->width; | |
3306 | p->height = w->height; | |
3307 | p->hscroll = w->hscroll; | |
3308 | p->display_table = w->display_table; | |
265a9e55 | 3309 | if (!NILP (w->buffer)) |
7ab12479 JB |
3310 | { |
3311 | /* Save w's value of point in the window configuration. | |
3312 | If w is the selected window, then get the value of point | |
3313 | from the buffer; pointm is garbage in the selected window. */ | |
3314 | if (EQ (window, selected_window)) | |
3315 | { | |
3316 | p->pointm = Fmake_marker (); | |
3317 | Fset_marker (p->pointm, BUF_PT (XBUFFER (w->buffer)), | |
3318 | w->buffer); | |
3319 | } | |
3320 | else | |
eeb82665 | 3321 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 3322 | |
eeb82665 | 3323 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
3324 | p->start_at_line_beg = w->start_at_line_beg; |
3325 | ||
3326 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 3327 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
3328 | } |
3329 | else | |
3330 | { | |
3331 | p->pointm = Qnil; | |
3332 | p->start = Qnil; | |
3333 | p->mark = Qnil; | |
3334 | p->start_at_line_beg = Qnil; | |
3335 | } | |
3336 | ||
265a9e55 | 3337 | if (NILP (w->parent)) |
7ab12479 JB |
3338 | p->parent = Qnil; |
3339 | else | |
3340 | p->parent = XWINDOW (w->parent)->temslot; | |
3341 | ||
265a9e55 | 3342 | if (NILP (w->prev)) |
7ab12479 JB |
3343 | p->prev = Qnil; |
3344 | else | |
3345 | p->prev = XWINDOW (w->prev)->temslot; | |
3346 | ||
265a9e55 | 3347 | if (!NILP (w->vchild)) |
7ab12479 | 3348 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 3349 | if (!NILP (w->hchild)) |
7ab12479 JB |
3350 | i = save_window_save (w->hchild, vector, i); |
3351 | } | |
3352 | ||
3353 | return i; | |
3354 | } | |
3355 | ||
a0d76c27 EN |
3356 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
3357 | Scurrent_window_configuration, 0, 1, 0, | |
44fa5b1e JB |
3358 | "Return an object representing the current window configuration of FRAME.\n\ |
3359 | If FRAME is nil or omitted, use the selected frame.\n\ | |
7ab12479 JB |
3360 | This describes the number of windows, their sizes and current buffers,\n\ |
3361 | and for each displayed buffer, where display starts, and the positions of\n\ | |
3362 | point and mark. An exception is made for point in the current buffer:\n\ | |
bdc727bf JB |
3363 | its value is -not- saved.\n\ |
3364 | This also records the currently selected frame, and FRAME's focus\n\ | |
3365 | redirection (see `redirect-frame-focus').") | |
44fa5b1e JB |
3366 | (frame) |
3367 | Lisp_Object frame; | |
7ab12479 JB |
3368 | { |
3369 | register Lisp_Object tem; | |
3370 | register int n_windows; | |
3371 | register struct save_window_data *data; | |
da2792e0 | 3372 | register struct Lisp_Vector *vec; |
7ab12479 | 3373 | register int i; |
44fa5b1e | 3374 | FRAME_PTR f; |
43bad991 | 3375 | |
44fa5b1e JB |
3376 | if (NILP (frame)) |
3377 | f = selected_frame; | |
43bad991 JB |
3378 | else |
3379 | { | |
44fa5b1e JB |
3380 | CHECK_LIVE_FRAME (frame, 0); |
3381 | f = XFRAME (frame); | |
43bad991 | 3382 | } |
7ab12479 | 3383 | |
44fa5b1e | 3384 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
da2792e0 KH |
3385 | vec = allocate_vectorlike (VECSIZE (struct save_window_data)); |
3386 | for (i = 0; i < VECSIZE (struct save_window_data); i++) | |
3387 | vec->contents[i] = Qnil; | |
3388 | vec->size = VECSIZE (struct save_window_data); | |
3389 | data = (struct save_window_data *)vec; | |
3390 | ||
d834a2e9 KH |
3391 | XSETFASTINT (data->frame_width, FRAME_WIDTH (f)); |
3392 | XSETFASTINT (data->frame_height, FRAME_HEIGHT (f)); | |
3393 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); | |
74112613 | 3394 | XSETFRAME (data->selected_frame, selected_frame); |
44fa5b1e | 3395 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 3396 | XSETBUFFER (data->current_buffer, current_buffer); |
7ab12479 | 3397 | data->minibuf_scroll_window = Vminibuf_scroll_window; |
44fa5b1e | 3398 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 3399 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
3400 | XSETINT (data->min_height, window_min_height); |
3401 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
3402 | tem = Fmake_vector (make_number (n_windows), Qnil); |
3403 | data->saved_windows = tem; | |
3404 | for (i = 0; i < n_windows; i++) | |
3405 | XVECTOR (tem)->contents[i] | |
3406 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
44fa5b1e | 3407 | save_window_save (FRAME_ROOT_WINDOW (f), |
7ab12479 | 3408 | XVECTOR (tem), 0); |
74112613 | 3409 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
3410 | return (tem); |
3411 | } | |
3412 | ||
3413 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
3414 | 0, UNEVALLED, 0, | |
3415 | "Execute body, preserving window sizes and contents.\n\ | |
eb16ec06 RS |
3416 | Restore which buffer appears in which window, where display starts,\n\ |
3417 | and the value of point and mark for each window.\n\ | |
3418 | Also restore which buffer is current.\n\ | |
3419 | But do not preserve point in the current buffer.\n\ | |
7ab12479 JB |
3420 | Does not restore the value of point in current buffer.") |
3421 | (args) | |
3422 | Lisp_Object args; | |
3423 | { | |
3424 | register Lisp_Object val; | |
3425 | register int count = specpdl_ptr - specpdl; | |
3426 | ||
3427 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 3428 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
3429 | val = Fprogn (args); |
3430 | return unbind_to (count, val); | |
3431 | } | |
3432 | \f | |
3433 | init_window_once () | |
3434 | { | |
44fa5b1e | 3435 | selected_frame = make_terminal_frame (); |
bc6c324f | 3436 | XSETFRAME (Vterminal_frame, selected_frame); |
44fa5b1e JB |
3437 | minibuf_window = selected_frame->minibuffer_window; |
3438 | selected_window = selected_frame->selected_window; | |
3439 | last_nonminibuf_frame = selected_frame; | |
5b03d3c0 RS |
3440 | |
3441 | window_initialized = 1; | |
7ab12479 JB |
3442 | } |
3443 | ||
3444 | syms_of_window () | |
3445 | { | |
3446 | Qwindowp = intern ("windowp"); | |
3447 | staticpro (&Qwindowp); | |
3448 | ||
806b4d9b JB |
3449 | Qwindow_live_p = intern ("window-live-p"); |
3450 | staticpro (&Qwindow_live_p); | |
605be8af | 3451 | |
2cccc823 | 3452 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
3453 | staticpro (&Qtemp_buffer_show_hook); |
3454 | ||
7ab12479 JB |
3455 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
3456 | "Non-nil means call as function to display a help buffer.\n\ | |
c3ef6b1d | 3457 | The function is called with one argument, the buffer to be displayed.\n\ |
f52cca03 RS |
3458 | Used by `with-output-to-temp-buffer'.\n\ |
3459 | If this function is used, then it must do the entire job of showing\n\ | |
3460 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it."); | |
7ab12479 JB |
3461 | Vtemp_buffer_show_function = Qnil; |
3462 | ||
3463 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
3464 | "If non-nil, function to call to handle `display-buffer'.\n\ | |
3465 | It will receive two args, the buffer and a flag which if non-nil means\n\ | |
3466 | that the currently selected window is not acceptable.\n\ | |
3467 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window'\n\ | |
3468 | work using this function."); | |
3469 | Vdisplay_buffer_function = Qnil; | |
3470 | ||
7ab12479 JB |
3471 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
3472 | "Non-nil means it is the window that C-M-v in minibuffer should scroll."); | |
3473 | Vminibuf_scroll_window = Qnil; | |
3474 | ||
3475 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, | |
3476 | "If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window."); | |
3477 | Vother_window_scroll_buffer = Qnil; | |
3478 | ||
44fa5b1e | 3479 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
700f75a4 | 3480 | "*Non-nil means `display-buffer' should make a separate frame."); |
44fa5b1e | 3481 | pop_up_frames = 0; |
7ab12479 | 3482 | |
44fa5b1e | 3483 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
a90712c2 | 3484 | "Function to call to handle automatic new frame creation.\n\ |
44fa5b1e | 3485 | It is called with no arguments and should return a newly created frame.\n\ |
7ab12479 | 3486 | \n\ |
44fa5b1e JB |
3487 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))'\n\ |
3488 | where `pop-up-frame-alist' would hold the default frame parameters."); | |
3489 | Vpop_up_frame_function = Qnil; | |
7ab12479 | 3490 | |
a90712c2 RS |
3491 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
3492 | "*List of buffer names that should have their own special frames.\n\ | |
3493 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
524580a4 | 3494 | using `special-display-function'. See also `special-display-regexps'.\n\ |
3548e138 | 3495 | \n\ |
524580a4 RS |
3496 | An element of the list can be a list instead of just a string.\n\ |
3497 | There are two ways to use a list as an element:\n\ | |
3498 | (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...)\n\ | |
3499 | In the first case, FRAME-PARAMETERS are used to create the frame.\n\ | |
3500 | In the latter case, FUNCTION is called with BUFFER as the first argument,\n\ | |
3501 | followed by OTHER-ARGS--it can display BUFFER in any way it likes.\n\ | |
3502 | All this is done by the function found in `special-display-function'."); | |
a90712c2 RS |
3503 | Vspecial_display_buffer_names = Qnil; |
3504 | ||
3505 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
3506 | "*List of regexps saying which buffers should have their own special frames.\n\ | |
3507 | If a buffer name matches one of these regexps, it gets its own frame.\n\ | |
3508 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
0a952b57 | 3509 | using `special-display-function'.\n\ |
3548e138 | 3510 | \n\ |
524580a4 RS |
3511 | An element of the list can be a list instead of just a string.\n\ |
3512 | There are two ways to use a list as an element:\n\ | |
3513 | (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...)\n\ | |
3514 | In the first case, FRAME-PARAMETERS are used to create the frame.\n\ | |
3515 | In the latter case, FUNCTION is called with the buffer as first argument,\n\ | |
3516 | followed by OTHER-ARGS--it can display the buffer in any way it likes.\n\ | |
3517 | All this is done by the function found in `special-display-function'."); | |
a90712c2 RS |
3518 | Vspecial_display_regexps = Qnil; |
3519 | ||
3520 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
3521 | "Function to call to make a new frame for a special buffer.\n\ | |
0a952b57 RS |
3522 | It is called with two arguments, the buffer and optional buffer specific\n\ |
3523 | data, and should return a window displaying that buffer.\n\ | |
a90712c2 | 3524 | The default value makes a separate frame for the buffer,\n\ |
bdd3a802 | 3525 | using `special-display-frame-alist' to specify the frame parameters.\n\ |
a90712c2 RS |
3526 | \n\ |
3527 | A buffer is special if its is listed in `special-display-buffer-names'\n\ | |
3528 | or matches a regexp in `special-display-regexps'."); | |
3529 | Vspecial_display_function = Qnil; | |
3530 | ||
855d8627 RS |
3531 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
3532 | "*List of buffer names that should appear in the selected window.\n\ | |
3533 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer'\n\ | |
3534 | switches to it in the selected window, rather than making it appear\n\ | |
2e5ce1a0 | 3535 | in some other window.\n\ |
855d8627 RS |
3536 | \n\ |
3537 | An element of the list can be a cons cell instead of just a string.\n\ | |
3538 | Then the car must be a string, which specifies the buffer name.\n\ | |
3539 | This is for compatibility with `special-display-buffer-names';\n\ | |
3540 | the cdr of the cons cell is ignored.\n\ | |
3541 | \n\ | |
3542 | See also `same-window-regexps'."); | |
3543 | Vsame_window_buffer_names = Qnil; | |
3544 | ||
3545 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
3546 | "*List of regexps saying which buffers should appear in the selected window.\n\ | |
3547 | If a buffer name matches one of these regexps, then displaying it\n\ | |
3548 | using `display-buffer' or `pop-to-buffer' switches to it\n\ | |
3549 | in the selected window, rather than making it appear in some other window.\n\ | |
3550 | \n\ | |
3551 | An element of the list can be a cons cell instead of just a string.\n\ | |
3552 | Then the car must be a string, which specifies the buffer name.\n\ | |
3553 | This is for compatibility with `special-display-buffer-names';\n\ | |
3554 | the cdr of the cons cell is ignored.\n\ | |
3555 | \n\ | |
3556 | See also `same-window-buffer-names'."); | |
3557 | Vsame_window_regexps = Qnil; | |
3558 | ||
7ab12479 JB |
3559 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
3560 | "*Non-nil means display-buffer should make new windows."); | |
3561 | pop_up_windows = 1; | |
3562 | ||
3563 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
3564 | "*Number of lines of continuity when scrolling by screenfuls."); | |
3565 | next_screen_context_lines = 2; | |
3566 | ||
3567 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
3568 | "*display-buffer would prefer to split the largest window if this large.\n\ | |
3569 | If there is only one window, it is split regardless of this value."); | |
3570 | split_height_threshold = 500; | |
3571 | ||
3572 | DEFVAR_INT ("window-min-height", &window_min_height, | |
3573 | "*Delete any window less than this tall (including its mode line)."); | |
3574 | window_min_height = 4; | |
3575 | ||
3576 | DEFVAR_INT ("window-min-width", &window_min_width, | |
3577 | "*Delete any window less than this wide."); | |
3578 | window_min_width = 10; | |
3579 | ||
3580 | defsubr (&Sselected_window); | |
3581 | defsubr (&Sminibuffer_window); | |
3582 | defsubr (&Swindow_minibuffer_p); | |
3583 | defsubr (&Swindowp); | |
806b4d9b | 3584 | defsubr (&Swindow_live_p); |
7ab12479 JB |
3585 | defsubr (&Spos_visible_in_window_p); |
3586 | defsubr (&Swindow_buffer); | |
3587 | defsubr (&Swindow_height); | |
3588 | defsubr (&Swindow_width); | |
3589 | defsubr (&Swindow_hscroll); | |
3590 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
3591 | defsubr (&Swindow_redisplay_end_trigger); |
3592 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 3593 | defsubr (&Swindow_edges); |
d5783c40 JB |
3594 | defsubr (&Scoordinates_in_window_p); |
3595 | defsubr (&Swindow_at); | |
7ab12479 JB |
3596 | defsubr (&Swindow_point); |
3597 | defsubr (&Swindow_start); | |
3598 | defsubr (&Swindow_end); | |
3599 | defsubr (&Sset_window_point); | |
3600 | defsubr (&Sset_window_start); | |
3601 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 3602 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
3603 | defsubr (&Swindow_display_table); |
3604 | defsubr (&Sset_window_display_table); | |
3605 | defsubr (&Snext_window); | |
3606 | defsubr (&Sprevious_window); | |
3607 | defsubr (&Sother_window); | |
3608 | defsubr (&Sget_lru_window); | |
3609 | defsubr (&Sget_largest_window); | |
3610 | defsubr (&Sget_buffer_window); | |
3611 | defsubr (&Sdelete_other_windows); | |
3612 | defsubr (&Sdelete_windows_on); | |
3613 | defsubr (&Sreplace_buffer_in_windows); | |
3614 | defsubr (&Sdelete_window); | |
3615 | defsubr (&Sset_window_buffer); | |
3616 | defsubr (&Sselect_window); | |
4628f7a4 EN |
3617 | defsubr (&Sspecial_display_p); |
3618 | defsubr (&Ssame_window_p); | |
7ab12479 JB |
3619 | defsubr (&Sdisplay_buffer); |
3620 | defsubr (&Ssplit_window); | |
3621 | defsubr (&Senlarge_window); | |
3622 | defsubr (&Sshrink_window); | |
3623 | defsubr (&Sscroll_up); | |
3624 | defsubr (&Sscroll_down); | |
3625 | defsubr (&Sscroll_left); | |
3626 | defsubr (&Sscroll_right); | |
ccd0664b | 3627 | defsubr (&Sother_window_for_scrolling); |
7ab12479 JB |
3628 | defsubr (&Sscroll_other_window); |
3629 | defsubr (&Srecenter); | |
3630 | defsubr (&Smove_to_window_line); | |
3631 | defsubr (&Swindow_configuration_p); | |
3632 | defsubr (&Sset_window_configuration); | |
3633 | defsubr (&Scurrent_window_configuration); | |
3634 | defsubr (&Ssave_window_excursion); | |
3635 | } | |
3636 | ||
3637 | keys_of_window () | |
3638 | { | |
3639 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
3640 | initial_define_key (control_x_map, '2', "split-window"); | |
3641 | initial_define_key (control_x_map, '0', "delete-window"); | |
3642 | initial_define_key (control_x_map, 'o', "other-window"); | |
3643 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
3644 | initial_define_key (control_x_map, '<', "scroll-left"); | |
3645 | initial_define_key (control_x_map, '>', "scroll-right"); | |
3646 | ||
3647 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
3648 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
3649 | initial_define_key (meta_map, 'v', "scroll-down"); | |
3650 | ||
3651 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
3652 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
3653 | } |