Commit | Line | Data |
---|---|---|
7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
89bca612 | 3 | Copyright (C) 1985, 1986, 1987, 1993, 1994 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 | |
19 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
20 | ||
18160b98 | 21 | #include <config.h> |
7ab12479 JB |
22 | #include "lisp.h" |
23 | #include "buffer.h" | |
44fa5b1e | 24 | #include "frame.h" |
7ab12479 JB |
25 | #include "window.h" |
26 | #include "commands.h" | |
27 | #include "indent.h" | |
28 | #include "termchar.h" | |
29 | #include "disptab.h" | |
f8026fd8 | 30 | #include "keyboard.h" |
7ab12479 | 31 | |
806b4d9b | 32 | Lisp_Object Qwindowp, Qwindow_live_p; |
7ab12479 JB |
33 | |
34 | Lisp_Object Fnext_window (), Fdelete_window (), Fselect_window (); | |
35 | Lisp_Object Fset_window_buffer (), Fsplit_window (), Frecenter (); | |
36 | ||
fd482be5 | 37 | void delete_all_subwindows (); |
7ab12479 JB |
38 | static struct window *decode_window(); |
39 | ||
40 | /* This is the window in which the terminal's cursor should | |
41 | be left when nothing is being done with it. This must | |
42 | always be a leaf window, and its buffer is selected by | |
43 | the top level editing loop at the end of each command. | |
44 | ||
45 | This value is always the same as | |
44fa5b1e | 46 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
47 | |
48 | Lisp_Object selected_window; | |
49 | ||
44fa5b1e | 50 | /* The minibuffer window of the selected frame. |
7ab12479 JB |
51 | Note that you cannot test for minibufferness of an arbitrary window |
52 | by comparing against this; but you can test for minibufferness of | |
53 | the selected window. */ | |
54 | Lisp_Object minibuf_window; | |
55 | ||
56 | /* Non-nil means it is the window for C-M-v to scroll | |
57 | when the minibuffer is selected. */ | |
58 | Lisp_Object Vminibuf_scroll_window; | |
59 | ||
60 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
61 | Lisp_Object Vother_window_scroll_buffer; | |
62 | ||
7ab12479 JB |
63 | /* Non-nil means it's function to call to display temp buffers. */ |
64 | Lisp_Object Vtemp_buffer_show_function; | |
65 | ||
66 | /* If a window gets smaller than either of these, it is removed. */ | |
67 | int window_min_height; | |
68 | int window_min_width; | |
69 | ||
70 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
71 | int pop_up_windows; | |
72 | ||
44fa5b1e JB |
73 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
74 | int pop_up_frames; | |
7ab12479 JB |
75 | |
76 | /* Non-nil means use this function instead of default */ | |
44fa5b1e | 77 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
78 | |
79 | /* Function to call to handle Fdisplay_buffer. */ | |
80 | Lisp_Object Vdisplay_buffer_function; | |
81 | ||
a90712c2 RS |
82 | /* List of buffer *names* for buffers that should have their own frames. */ |
83 | Lisp_Object Vspecial_display_buffer_names; | |
84 | ||
85 | /* List of regexps for buffer names that should have their own frames. */ | |
86 | Lisp_Object Vspecial_display_regexps; | |
87 | ||
88 | /* Function to pop up a special frame. */ | |
89 | Lisp_Object Vspecial_display_function; | |
90 | ||
7ab12479 JB |
91 | /* Fdisplay_buffer always splits the largest window |
92 | if that window is more than this high. */ | |
93 | int split_height_threshold; | |
94 | ||
95 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
96 | int next_screen_context_lines; | |
97 | ||
98 | /* Incremented for each window created. */ | |
99 | static int sequence_number; | |
100 | ||
101 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
102 | \f | |
103 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
104 | "Returns t if OBJ is a window.") | |
105 | (obj) | |
106 | Lisp_Object obj; | |
107 | { | |
108 | return XTYPE (obj) == Lisp_Window ? Qt : Qnil; | |
109 | } | |
110 | ||
806b4d9b | 111 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
605be8af JB |
112 | "Returns t if OBJ is a window which is currently visible.") |
113 | (obj) | |
114 | Lisp_Object obj; | |
115 | { | |
116 | return ((XTYPE (obj) == Lisp_Window | |
117 | && ! NILP (XWINDOW (obj)->buffer)) | |
118 | ? Qt : Qnil); | |
119 | } | |
120 | ||
7ab12479 JB |
121 | Lisp_Object |
122 | make_window () | |
123 | { | |
124 | register Lisp_Object val; | |
125 | register struct window *p; | |
126 | ||
127 | /* Add sizeof (Lisp_Object) here because sizeof (struct Lisp_Vector) | |
128 | includes the first element. */ | |
129 | val = Fmake_vector ( | |
130 | make_number ((sizeof (struct window) - sizeof (struct Lisp_Vector) | |
131 | + sizeof (Lisp_Object)) | |
132 | / sizeof (Lisp_Object)), | |
133 | Qnil); | |
134 | XSETTYPE (val, Lisp_Window); | |
135 | p = XWINDOW (val); | |
136 | XFASTINT (p->sequence_number) = ++sequence_number; | |
137 | XFASTINT (p->left) = XFASTINT (p->top) | |
138 | = XFASTINT (p->height) = XFASTINT (p->width) | |
139 | = XFASTINT (p->hscroll) = 0; | |
140 | XFASTINT (p->last_point_x) = XFASTINT (p->last_point_y) = 0; | |
141 | p->start = Fmake_marker (); | |
142 | p->pointm = Fmake_marker (); | |
143 | XFASTINT (p->use_time) = 0; | |
44fa5b1e | 144 | p->frame = Qnil; |
7ab12479 JB |
145 | p->display_table = Qnil; |
146 | p->dedicated = Qnil; | |
147 | return val; | |
148 | } | |
149 | ||
150 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
151 | "Return the window that the cursor now appears in and commands apply to.") | |
152 | () | |
153 | { | |
154 | return selected_window; | |
155 | } | |
156 | ||
83762ba4 JB |
157 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
158 | "Return the window used now for minibuffers.\n\ | |
159 | If the optional argument FRAME is specified, return the minibuffer window\n\ | |
160 | used by that frame.") | |
161 | (frame) | |
162 | Lisp_Object frame; | |
7ab12479 | 163 | { |
44fa5b1e | 164 | #ifdef MULTI_FRAME |
83762ba4 JB |
165 | if (NILP (frame)) |
166 | XSET (frame, Lisp_Frame, selected_frame); | |
167 | else | |
168 | CHECK_LIVE_FRAME (frame, 0); | |
169 | #endif | |
170 | ||
171 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); | |
7ab12479 JB |
172 | } |
173 | ||
605be8af | 174 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
7ab12479 JB |
175 | "Returns non-nil if WINDOW is a minibuffer window.") |
176 | (window) | |
177 | Lisp_Object window; | |
178 | { | |
179 | struct window *w = decode_window (window); | |
180 | return (MINI_WINDOW_P (w) ? Qt : Qnil); | |
181 | } | |
182 | ||
183 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, | |
184 | Spos_visible_in_window_p, 0, 2, 0, | |
44fa5b1e | 185 | "Return t if position POS is currently on the frame in WINDOW.\n\ |
7ab12479 JB |
186 | Returns nil if that position is scrolled vertically out of view.\n\ |
187 | POS defaults to point; WINDOW, to the selected window.") | |
188 | (pos, window) | |
189 | Lisp_Object pos, window; | |
190 | { | |
191 | register struct window *w; | |
192 | register int top; | |
193 | register int height; | |
194 | register int posint; | |
195 | register struct buffer *buf; | |
196 | struct position posval; | |
afdb2485 | 197 | int hscroll; |
7ab12479 | 198 | |
265a9e55 | 199 | if (NILP (pos)) |
5ce7b543 | 200 | posint = PT; |
7ab12479 JB |
201 | else |
202 | { | |
203 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
204 | posint = XINT (pos); | |
205 | } | |
206 | ||
605be8af | 207 | w = decode_window (window); |
7ab12479 | 208 | top = marker_position (w->start); |
afdb2485 | 209 | hscroll = XINT (w->hscroll); |
7ab12479 JB |
210 | |
211 | if (posint < top) | |
212 | return Qnil; | |
213 | ||
214 | height = XFASTINT (w->height) - ! MINI_WINDOW_P (w); | |
215 | ||
216 | buf = XBUFFER (w->buffer); | |
217 | if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf)) | |
218 | { | |
44fa5b1e | 219 | /* If frame is up to date, |
7ab12479 JB |
220 | use the info recorded about how much text fit on it. */ |
221 | if (posint < BUF_Z (buf) - XFASTINT (w->window_end_pos) | |
222 | || (XFASTINT (w->window_end_vpos) < height)) | |
223 | return Qt; | |
224 | return Qnil; | |
225 | } | |
226 | else | |
227 | { | |
33eb4ede | 228 | if (posint > BUF_ZV (buf)) |
7ab12479 JB |
229 | return Qnil; |
230 | ||
231 | /* If that info is not correct, calculate afresh */ | |
afdb2485 KH |
232 | posval = *compute_motion (top, 0, (hscroll ? 1 - hscroll : 0), |
233 | posint, height, 0, | |
535e0b8e | 234 | window_internal_width (w) - 1, |
e37f06d7 | 235 | hscroll, 0, w); |
7ab12479 JB |
236 | |
237 | return posval.vpos < height ? Qt : Qnil; | |
238 | } | |
239 | } | |
240 | \f | |
241 | static struct window * | |
242 | decode_window (window) | |
243 | register Lisp_Object window; | |
244 | { | |
265a9e55 | 245 | if (NILP (window)) |
7ab12479 JB |
246 | return XWINDOW (selected_window); |
247 | ||
605be8af | 248 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
249 | return XWINDOW (window); |
250 | } | |
251 | ||
252 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, | |
253 | "Return the buffer that WINDOW is displaying.") | |
254 | (window) | |
255 | Lisp_Object window; | |
256 | { | |
257 | return decode_window (window)->buffer; | |
258 | } | |
259 | ||
260 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
261 | "Return the number of lines in WINDOW (including its mode line).") | |
262 | (window) | |
263 | Lisp_Object window; | |
264 | { | |
265 | return decode_window (window)->height; | |
266 | } | |
267 | ||
268 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
3b5908ef RS |
269 | "Return the number of display columns in WINDOW.\n\ |
270 | This is the width that is usable columns available for text in WINDOW.\n\ | |
271 | If you want to find out how many columns WINDOW takes up,\n\ | |
272 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))).") | |
7ab12479 JB |
273 | (window) |
274 | Lisp_Object window; | |
275 | { | |
ee61d94e | 276 | return make_number (window_internal_width (decode_window (window))); |
7ab12479 JB |
277 | } |
278 | ||
279 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
280 | "Return the number of columns by which WINDOW is scrolled from left margin.") | |
281 | (window) | |
282 | Lisp_Object window; | |
283 | { | |
284 | return decode_window (window)->hscroll; | |
285 | } | |
286 | ||
287 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
288 | "Set number of columns WINDOW is scrolled from left margin to NCOL.\n\ | |
289 | NCOL should be zero or positive.") | |
290 | (window, ncol) | |
291 | register Lisp_Object window, ncol; | |
292 | { | |
293 | register struct window *w; | |
294 | ||
295 | CHECK_NUMBER (ncol, 1); | |
296 | if (XINT (ncol) < 0) XFASTINT (ncol) = 0; | |
297 | if (XFASTINT (ncol) >= (1 << (SHORTBITS - 1))) | |
298 | args_out_of_range (ncol, Qnil); | |
299 | w = decode_window (window); | |
7f4161e0 | 300 | if (XINT (w->hscroll) != XINT (ncol)) |
7ab12479 JB |
301 | clip_changed = 1; /* Prevent redisplay shortcuts */ |
302 | w->hscroll = ncol; | |
303 | return ncol; | |
304 | } | |
305 | ||
306 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, | |
307 | "Return a list of the edge coordinates of WINDOW.\n\ | |
44fa5b1e | 308 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.\n\ |
7ab12479 JB |
309 | RIGHT is one more than the rightmost column used by WINDOW,\n\ |
310 | and BOTTOM is one more than the bottommost row used by WINDOW\n\ | |
311 | and its mode-line.") | |
312 | (window) | |
313 | Lisp_Object window; | |
314 | { | |
315 | register struct window *w = decode_window (window); | |
316 | ||
317 | return Fcons (w->left, Fcons (w->top, | |
318 | Fcons (make_number (XFASTINT (w->left) + XFASTINT (w->width)), | |
319 | Fcons (make_number (XFASTINT (w->top) | |
320 | + XFASTINT (w->height)), | |
321 | Qnil)))); | |
322 | } | |
323 | ||
d5783c40 JB |
324 | /* Test if the character at column *x, row *y is within window *w. |
325 | If it is not, return 0; | |
326 | if it is in the window's text area, | |
327 | set *x and *y to its location relative to the upper left corner | |
328 | of the window, and | |
329 | return 1; | |
330 | if it is on the window's modeline, return 2; | |
331 | if it is on the border between the window and its right sibling, | |
332 | return 3. */ | |
333 | static int | |
334 | coordinates_in_window (w, x, y) | |
335 | register struct window *w; | |
336 | register int *x, *y; | |
337 | { | |
338 | register int left = XINT (w->left); | |
339 | register int width = XINT (w->width); | |
340 | register int window_height = XINT (w->height); | |
341 | register int top = XFASTINT (w->top); | |
342 | ||
343 | if ( *x < left || *x >= left + width | |
344 | || *y < top || *y >= top + window_height) | |
345 | return 0; | |
346 | ||
347 | /* Is the character is the mode line? */ | |
348 | if (*y == top + window_height - 1 | |
05c2896a | 349 | && ! MINI_WINDOW_P (w)) |
d5783c40 JB |
350 | return 2; |
351 | ||
352 | /* Is the character in the right border? */ | |
353 | if (*x == left + width - 1 | |
44fa5b1e | 354 | && left + width != FRAME_WIDTH (XFRAME (w->frame))) |
d5783c40 JB |
355 | return 3; |
356 | ||
357 | *x -= left; | |
358 | *y -= top; | |
359 | return 1; | |
360 | } | |
361 | ||
362 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, | |
363 | Scoordinates_in_window_p, 2, 2, 0, | |
364 | "Return non-nil if COORDINATES are in WINDOW.\n\ | |
1113d9db | 365 | COORDINATES is a cons of the form (X . Y), X and Y being distances\n\ |
44fa5b1e | 366 | measured in characters from the upper-left corner of the frame.\n\ |
1113d9db | 367 | (0 . 0) denotes the character in the upper left corner of the\n\ |
44fa5b1e | 368 | frame.\n\ |
d5783c40 JB |
369 | If COORDINATES are in the text portion of WINDOW,\n\ |
370 | the coordinates relative to the window are returned.\n\ | |
e5d77022 | 371 | If they are in the mode line of WINDOW, `mode-line' is returned.\n\ |
d5783c40 | 372 | If they are on the border between WINDOW and its right sibling,\n\ |
e5d77022 | 373 | `vertical-line' is returned.") |
d5783c40 JB |
374 | (coordinates, window) |
375 | register Lisp_Object coordinates, window; | |
376 | { | |
377 | int x, y; | |
378 | ||
605be8af | 379 | CHECK_LIVE_WINDOW (window, 0); |
d5783c40 JB |
380 | CHECK_CONS (coordinates, 1); |
381 | x = XINT (Fcar (coordinates)); | |
382 | y = XINT (Fcdr (coordinates)); | |
383 | ||
384 | switch (coordinates_in_window (XWINDOW (window), &x, &y)) | |
385 | { | |
386 | case 0: /* NOT in window at all. */ | |
387 | return Qnil; | |
388 | ||
389 | case 1: /* In text part of window. */ | |
390 | return Fcons (x, y); | |
391 | ||
392 | case 2: /* In mode line of window. */ | |
393 | return Qmode_line; | |
394 | ||
395 | case 3: /* On right border of window. */ | |
e5d77022 | 396 | return Qvertical_line; |
d5783c40 JB |
397 | |
398 | default: | |
399 | abort (); | |
400 | } | |
401 | } | |
402 | ||
7ab12479 | 403 | /* Find the window containing column x, row y, and return it as a |
d5783c40 JB |
404 | Lisp_Object. If x, y is on the window's modeline, set *part |
405 | to 1; if it is on the separating line between the window and its | |
406 | right sibling, set it to 2; otherwise set it to 0. If there is no | |
407 | window under x, y return nil and leave *part unmodified. */ | |
7ab12479 | 408 | Lisp_Object |
44fa5b1e JB |
409 | window_from_coordinates (frame, x, y, part) |
410 | FRAME_PTR frame; | |
7ab12479 | 411 | int x, y; |
d5783c40 | 412 | int *part; |
7ab12479 JB |
413 | { |
414 | register Lisp_Object tem, first; | |
415 | ||
44fa5b1e | 416 | tem = first = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 417 | |
d5783c40 | 418 | do |
7ab12479 JB |
419 | { |
420 | int found = coordinates_in_window (XWINDOW (tem), &x, &y); | |
421 | ||
422 | if (found) | |
423 | { | |
d5783c40 | 424 | *part = found - 1; |
7ab12479 JB |
425 | return tem; |
426 | } | |
427 | ||
d5783c40 | 428 | tem = Fnext_window (tem, Qt, Qlambda); |
7ab12479 | 429 | } |
d5783c40 JB |
430 | while (! EQ (tem, first)); |
431 | ||
432 | return Qnil; | |
7ab12479 JB |
433 | } |
434 | ||
ab17c3f2 | 435 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
b0c33a94 | 436 | "Return window containing coordinates X and Y on FRAME.\n\ |
44fa5b1e JB |
437 | If omitted, FRAME defaults to the currently selected frame.\n\ |
438 | The top left corner of the frame is considered to be row 0,\n\ | |
95605e15 | 439 | column 0.") |
b0c33a94 RS |
440 | (x, y, frame) |
441 | Lisp_Object x, y, frame; | |
7ab12479 JB |
442 | { |
443 | int part; | |
444 | ||
4b206065 | 445 | #ifdef MULTI_FRAME |
44fa5b1e JB |
446 | if (NILP (frame)) |
447 | XSET (frame, Lisp_Frame, selected_frame); | |
d5783c40 | 448 | else |
44fa5b1e | 449 | CHECK_LIVE_FRAME (frame, 2); |
4b206065 | 450 | #endif |
b0c33a94 RS |
451 | CHECK_NUMBER (x, 0); |
452 | CHECK_NUMBER (y, 1); | |
7ab12479 | 453 | |
44fa5b1e | 454 | return window_from_coordinates (XFRAME (frame), |
b0c33a94 | 455 | XINT (x), XINT (y), |
7ab12479 JB |
456 | &part); |
457 | } | |
458 | ||
459 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
460 | "Return current value of point in WINDOW.\n\ | |
461 | For a nonselected window, this is the value point would have\n\ | |
462 | if that window were selected.\n\ | |
463 | \n\ | |
464 | Note that, when WINDOW is the selected window and its buffer\n\ | |
465 | is also currently selected, the value returned is the same as (point).\n\ | |
466 | It would be more strictly correct to return the `top-level' value\n\ | |
467 | of point, outside of any save-excursion forms.\n\ | |
468 | But that is hard to define.") | |
469 | (window) | |
470 | Lisp_Object window; | |
471 | { | |
472 | register struct window *w = decode_window (window); | |
473 | ||
474 | if (w == XWINDOW (selected_window) | |
475 | && current_buffer == XBUFFER (w->buffer)) | |
476 | return Fpoint (); | |
477 | return Fmarker_position (w->pointm); | |
478 | } | |
479 | ||
480 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
481 | "Return position at which display currently starts in WINDOW.") | |
482 | (window) | |
483 | Lisp_Object window; | |
484 | { | |
485 | return Fmarker_position (decode_window (window)->start); | |
486 | } | |
487 | ||
488 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 1, 0, | |
489 | "Return position at which display currently ends in WINDOW.") | |
490 | (window) | |
491 | Lisp_Object window; | |
492 | { | |
493 | Lisp_Object value; | |
494 | struct window *w = decode_window (window); | |
5a41ab94 RS |
495 | Lisp_Object buf; |
496 | ||
497 | buf = w->buffer; | |
498 | CHECK_BUFFER (buf, 0); | |
499 | ||
7ab12479 | 500 | XSET (value, Lisp_Int, |
5a41ab94 | 501 | BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
502 | |
503 | return value; | |
504 | } | |
505 | ||
506 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
507 | "Make point value in WINDOW be at position POS in WINDOW's buffer.") | |
508 | (window, pos) | |
509 | Lisp_Object window, pos; | |
510 | { | |
511 | register struct window *w = decode_window (window); | |
512 | ||
513 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
514 | if (w == XWINDOW (selected_window)) | |
515 | Fgoto_char (pos); | |
516 | else | |
517 | set_marker_restricted (w->pointm, pos, w->buffer); | |
518 | ||
519 | return pos; | |
520 | } | |
521 | ||
522 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
523 | "Make display in WINDOW start at position POS in WINDOW's buffer.\n\ | |
524 | Optional third arg NOFORCE non-nil inhibits next redisplay\n\ | |
525 | from overriding motion of point in order to display at this exact start.") | |
526 | (window, pos, noforce) | |
527 | Lisp_Object window, pos, noforce; | |
528 | { | |
529 | register struct window *w = decode_window (window); | |
530 | ||
531 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
532 | set_marker_restricted (w->start, pos, w->buffer); | |
533 | /* this is not right, but much easier than doing what is right. */ | |
534 | w->start_at_line_beg = Qnil; | |
265a9e55 | 535 | if (NILP (noforce)) |
7ab12479 JB |
536 | w->force_start = Qt; |
537 | w->update_mode_line = Qt; | |
538 | XFASTINT (w->last_modified) = 0; | |
62c07cc7 JB |
539 | if (!EQ (window, selected_window)) |
540 | windows_or_buffers_changed++; | |
7ab12479 JB |
541 | return pos; |
542 | } | |
543 | ||
544 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
545 | 1, 1, 0, | |
546 | "Return WINDOW's dedicated object, usually t or nil.\n\ | |
1f18c48f | 547 | See also `set-window-dedicated-p'.") |
7ab12479 JB |
548 | (window) |
549 | Lisp_Object window; | |
550 | { | |
551 | return decode_window (window)->dedicated; | |
552 | } | |
553 | ||
d207b766 RS |
554 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
555 | Sset_window_dedicated_p, 2, 2, 0, | |
556 | "Control whether WINDOW is dedicated to the buffer it displays.\n\ | |
557 | If it is dedicated, Emacs will not automatically change\n\ | |
558 | which buffer appears in it.\n\ | |
559 | The second argument is the new value for the dedication flag;\n\ | |
560 | non-nil means yes.") | |
7ab12479 JB |
561 | (window, arg) |
562 | Lisp_Object window, arg; | |
563 | { | |
564 | register struct window *w = decode_window (window); | |
565 | ||
265a9e55 | 566 | if (NILP (arg)) |
7ab12479 JB |
567 | w->dedicated = Qnil; |
568 | else | |
d207b766 | 569 | w->dedicated = Qt; |
7ab12479 JB |
570 | |
571 | return w->dedicated; | |
572 | } | |
573 | ||
574 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
575 | 0, 1, 0, | |
576 | "Return the display-table that WINDOW is using.") | |
577 | (window) | |
578 | Lisp_Object window; | |
579 | { | |
580 | return decode_window (window)->display_table; | |
581 | } | |
582 | ||
583 | /* Get the display table for use currently on window W. | |
584 | This is either W's display table or W's buffer's display table. | |
585 | Ignore the specified tables if they are not valid; | |
586 | if no valid table is specified, return 0. */ | |
587 | ||
588 | struct Lisp_Vector * | |
589 | window_display_table (w) | |
590 | struct window *w; | |
591 | { | |
592 | Lisp_Object tem; | |
593 | tem = w->display_table; | |
594 | if (XTYPE (tem) == Lisp_Vector && XVECTOR (tem)->size == DISP_TABLE_SIZE) | |
595 | return XVECTOR (tem); | |
596 | tem = XBUFFER (w->buffer)->display_table; | |
597 | if (XTYPE (tem) == Lisp_Vector && XVECTOR (tem)->size == DISP_TABLE_SIZE) | |
598 | return XVECTOR (tem); | |
599 | tem = Vstandard_display_table; | |
600 | if (XTYPE (tem) == Lisp_Vector && XVECTOR (tem)->size == DISP_TABLE_SIZE) | |
601 | return XVECTOR (tem); | |
602 | return 0; | |
603 | } | |
604 | ||
3a2712f9 | 605 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
7ab12479 JB |
606 | "Set WINDOW's display-table to TABLE.") |
607 | (window, table) | |
608 | register Lisp_Object window, table; | |
609 | { | |
610 | register struct window *w; | |
611 | register Lisp_Object z; /* Return value. */ | |
612 | ||
613 | w = decode_window (window); | |
614 | w->display_table = table; | |
615 | return table; | |
616 | } | |
617 | \f | |
618 | /* Record info on buffer window w is displaying | |
619 | when it is about to cease to display that buffer. */ | |
620 | static | |
621 | unshow_buffer (w) | |
622 | register struct window *w; | |
623 | { | |
12cae7c0 | 624 | Lisp_Object buf; |
7ab12479 | 625 | |
12cae7c0 | 626 | buf = w->buffer; |
7ab12479 JB |
627 | if (XBUFFER (buf) != XMARKER (w->pointm)->buffer) |
628 | abort (); | |
629 | ||
573f41ab | 630 | #if 0 |
7ab12479 JB |
631 | if (w == XWINDOW (selected_window) |
632 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
633 | /* Do this except when the selected window's buffer | |
634 | is being removed from some other window. */ | |
573f41ab RS |
635 | #endif |
636 | /* last_window_start records the start position that this buffer | |
637 | had in the last window to be disconnected from it. | |
638 | Now that this statement is unconditional, | |
639 | it is possible for the buffer to be displayed in the | |
640 | selected window, while last_window_start reflects another | |
641 | window which was recently showing the same buffer. | |
642 | Some people might say that might be a good thing. Let's see. */ | |
7ab12479 JB |
643 | XBUFFER (buf)->last_window_start = marker_position (w->start); |
644 | ||
645 | /* Point in the selected window's buffer | |
646 | is actually stored in that buffer, and the window's pointm isn't used. | |
647 | So don't clobber point in that buffer. */ | |
648 | if (! EQ (buf, XWINDOW (selected_window)->buffer)) | |
649 | BUF_PT (XBUFFER (buf)) | |
650 | = clip_to_bounds (BUF_BEGV (XBUFFER (buf)), | |
651 | marker_position (w->pointm), | |
652 | BUF_ZV (XBUFFER (buf))); | |
653 | } | |
654 | ||
655 | /* Put replacement into the window structure in place of old. */ | |
656 | static | |
657 | replace_window (old, replacement) | |
658 | Lisp_Object old, replacement; | |
659 | { | |
660 | register Lisp_Object tem; | |
661 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
662 | ||
44fa5b1e JB |
663 | /* If OLD is its frame's root_window, then replacement is the new |
664 | root_window for that frame. */ | |
7ab12479 | 665 | |
7f4161e0 | 666 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 667 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 JB |
668 | |
669 | p->left = o->left; | |
670 | p->top = o->top; | |
671 | p->width = o->width; | |
672 | p->height = o->height; | |
673 | ||
674 | p->next = tem = o->next; | |
265a9e55 | 675 | if (!NILP (tem)) |
7ab12479 JB |
676 | XWINDOW (tem)->prev = replacement; |
677 | ||
678 | p->prev = tem = o->prev; | |
265a9e55 | 679 | if (!NILP (tem)) |
7ab12479 JB |
680 | XWINDOW (tem)->next = replacement; |
681 | ||
682 | p->parent = tem = o->parent; | |
265a9e55 | 683 | if (!NILP (tem)) |
7ab12479 JB |
684 | { |
685 | if (EQ (XWINDOW (tem)->vchild, old)) | |
686 | XWINDOW (tem)->vchild = replacement; | |
687 | if (EQ (XWINDOW (tem)->hchild, old)) | |
688 | XWINDOW (tem)->hchild = replacement; | |
689 | } | |
690 | ||
691 | /*** Here, if replacement is a vertical combination | |
692 | and so is its new parent, we should make replacement's | |
693 | children be children of that parent instead. ***/ | |
694 | } | |
695 | ||
696 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
697 | "Remove WINDOW from the display. Default is selected window.") | |
698 | (window) | |
699 | register Lisp_Object window; | |
700 | { | |
701 | register Lisp_Object tem, parent, sib; | |
702 | register struct window *p; | |
703 | register struct window *par; | |
704 | ||
605be8af JB |
705 | /* Because this function is called by other C code on non-leaf |
706 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
707 | so we can't decode_window here. */ | |
265a9e55 | 708 | if (NILP (window)) |
7ab12479 JB |
709 | window = selected_window; |
710 | else | |
711 | CHECK_WINDOW (window, 0); | |
7ab12479 | 712 | p = XWINDOW (window); |
605be8af JB |
713 | |
714 | /* It's okay to delete an already-deleted window. */ | |
715 | if (NILP (p->buffer) | |
716 | && NILP (p->hchild) | |
717 | && NILP (p->vchild)) | |
718 | return Qnil; | |
719 | ||
7ab12479 | 720 | parent = p->parent; |
265a9e55 | 721 | if (NILP (parent)) |
7ab12479 JB |
722 | error ("Attempt to delete minibuffer or sole ordinary window"); |
723 | par = XWINDOW (parent); | |
724 | ||
725 | windows_or_buffers_changed++; | |
726 | ||
605be8af JB |
727 | /* Are we trying to delete any frame's selected window? */ |
728 | { | |
0def0403 | 729 | Lisp_Object frame, pwindow; |
605be8af | 730 | |
0def0403 RS |
731 | /* See if the frame's selected window is either WINDOW |
732 | or any subwindow of it, by finding all that window's parents | |
733 | and comparing each one with WINDOW. */ | |
734 | frame = WINDOW_FRAME (XWINDOW (window)); | |
735 | pwindow = FRAME_SELECTED_WINDOW (XFRAME (frame)); | |
736 | ||
737 | while (!NILP (pwindow)) | |
738 | { | |
739 | if (EQ (window, pwindow)) | |
740 | break; | |
741 | pwindow = XWINDOW (pwindow)->parent; | |
742 | } | |
743 | ||
744 | if (EQ (window, pwindow)) | |
605be8af | 745 | { |
89bca612 RS |
746 | Lisp_Object alternative; |
747 | alternative = Fnext_window (window, Qlambda, Qnil); | |
605be8af JB |
748 | |
749 | /* If we're about to delete the selected window on the | |
750 | selected frame, then we should use Fselect_window to select | |
751 | the new window. On the other hand, if we're about to | |
752 | delete the selected window on any other frame, we shouldn't do | |
753 | anything but set the frame's selected_window slot. */ | |
754 | if (EQ (window, selected_window)) | |
755 | Fselect_window (alternative); | |
756 | else | |
0def0403 | 757 | FRAME_SELECTED_WINDOW (XFRAME (frame)) = alternative; |
605be8af JB |
758 | } |
759 | } | |
7ab12479 JB |
760 | |
761 | tem = p->buffer; | |
762 | /* tem is null for dummy parent windows | |
763 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 764 | if (!NILP (tem)) |
7ab12479 JB |
765 | { |
766 | unshow_buffer (p); | |
767 | unchain_marker (p->pointm); | |
768 | unchain_marker (p->start); | |
7ab12479 JB |
769 | } |
770 | ||
771 | tem = p->next; | |
265a9e55 | 772 | if (!NILP (tem)) |
7ab12479 JB |
773 | XWINDOW (tem)->prev = p->prev; |
774 | ||
775 | tem = p->prev; | |
265a9e55 | 776 | if (!NILP (tem)) |
7ab12479 JB |
777 | XWINDOW (tem)->next = p->next; |
778 | ||
779 | if (EQ (window, par->hchild)) | |
780 | par->hchild = p->next; | |
781 | if (EQ (window, par->vchild)) | |
782 | par->vchild = p->next; | |
783 | ||
784 | /* Find one of our siblings to give our space to. */ | |
785 | sib = p->prev; | |
265a9e55 | 786 | if (NILP (sib)) |
7ab12479 JB |
787 | { |
788 | /* If p gives its space to its next sibling, that sibling needs | |
789 | to have its top/left side pulled back to where p's is. | |
790 | set_window_{height,width} will re-position the sibling's | |
791 | children. */ | |
792 | sib = p->next; | |
7f4161e0 JB |
793 | XWINDOW (sib)->top = p->top; |
794 | XWINDOW (sib)->left = p->left; | |
7ab12479 JB |
795 | } |
796 | ||
797 | /* Stretch that sibling. */ | |
265a9e55 | 798 | if (!NILP (par->vchild)) |
7ab12479 JB |
799 | set_window_height (sib, |
800 | XFASTINT (XWINDOW (sib)->height) + XFASTINT (p->height), | |
801 | 1); | |
265a9e55 | 802 | if (!NILP (par->hchild)) |
7ab12479 JB |
803 | set_window_width (sib, |
804 | XFASTINT (XWINDOW (sib)->width) + XFASTINT (p->width), | |
805 | 1); | |
806 | ||
807 | /* If parent now has only one child, | |
808 | put the child into the parent's place. */ | |
7ab12479 | 809 | tem = par->hchild; |
265a9e55 | 810 | if (NILP (tem)) |
7ab12479 | 811 | tem = par->vchild; |
265a9e55 | 812 | if (NILP (XWINDOW (tem)->next)) |
7ab12479 | 813 | replace_window (parent, tem); |
605be8af JB |
814 | |
815 | /* Since we may be deleting combination windows, we must make sure that | |
816 | not only p but all its children have been marked as deleted. */ | |
817 | if (! NILP (p->hchild)) | |
818 | delete_all_subwindows (XWINDOW (p->hchild)); | |
819 | else if (! NILP (p->vchild)) | |
820 | delete_all_subwindows (XWINDOW (p->vchild)); | |
821 | ||
822 | /* Mark this window as deleted. */ | |
823 | p->buffer = p->hchild = p->vchild = Qnil; | |
824 | ||
7ab12479 JB |
825 | return Qnil; |
826 | } | |
827 | \f | |
7ab12479 | 828 | |
44fa5b1e | 829 | extern Lisp_Object next_frame (), prev_frame (); |
7ab12479 | 830 | |
26f6279d JB |
831 | /* This comment supplies the doc string for `next-window', |
832 | for make-docfile to see. We cannot put this in the real DEFUN | |
833 | due to limits in the Unix cpp. | |
834 | ||
835 | DEFUN ("next-window", Ffoo, Sfoo, 0, 3, 0, | |
7ab12479 | 836 | "Return next window after WINDOW in canonical ordering of windows.\n\ |
d5783c40 JB |
837 | If omitted, WINDOW defaults to the selected window.\n\ |
838 | \n\ | |
839 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
840 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
841 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
842 | minibuffer even if it is active.\n\ | |
843 | \n\ | |
44fa5b1e JB |
844 | Several frames may share a single minibuffer; if the minibuffer\n\ |
845 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 846 | too. Therefore, `next-window' can be used to iterate through the\n\ |
44fa5b1e JB |
847 | set of windows even when the minibuffer is on another frame. If the\n\ |
848 | minibuffer does not count, only windows from WINDOW's frame count.\n\ | |
d5783c40 | 849 | \n\ |
44fa5b1e JB |
850 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
851 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 852 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 853 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
89bca612 | 854 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
855 | \n\ |
856 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
857 | `next-window' to iterate through the entire cycle of acceptable\n\ | |
858 | windows, eventually ending up back at the window you started with.\n\ | |
859 | `previous-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
860 | (window, minibuf, all_frames) */ |
861 | ||
862 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, | |
863 | 0) | |
44fa5b1e JB |
864 | (window, minibuf, all_frames) |
865 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
866 | { |
867 | register Lisp_Object tem; | |
d5783c40 | 868 | Lisp_Object start_window; |
7ab12479 | 869 | |
265a9e55 | 870 | if (NILP (window)) |
7ab12479 JB |
871 | window = selected_window; |
872 | else | |
605be8af | 873 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 874 | |
d5783c40 JB |
875 | start_window = window; |
876 | ||
877 | /* minibuf == nil may or may not include minibuffers. | |
878 | Decide if it does. */ | |
265a9e55 | 879 | if (NILP (minibuf)) |
d5783c40 JB |
880 | minibuf = (minibuf_level ? Qt : Qlambda); |
881 | ||
c6e73093 | 882 | #ifdef MULTI_FRAME |
1bb80f72 | 883 | /* all_frames == nil doesn't specify which frames to include. */ |
44fa5b1e JB |
884 | if (NILP (all_frames)) |
885 | all_frames = (EQ (minibuf, Qt) | |
1bb80f72 RS |
886 | ? (FRAME_MINIBUF_WINDOW |
887 | (XFRAME | |
888 | (WINDOW_FRAME | |
889 | (XWINDOW (window))))) | |
890 | : Qnil); | |
89bca612 RS |
891 | else if (EQ (all_frames, Qvisible)) |
892 | ; | |
f812f9c6 RS |
893 | else if (XFASTINT (all_frames) == 0) |
894 | ; | |
44fa5b1e JB |
895 | else if (! EQ (all_frames, Qt)) |
896 | all_frames = Qnil; | |
644b477c RS |
897 | /* Now all_frames is t meaning search all frames, |
898 | nil meaning search just current frame, | |
f812f9c6 RS |
899 | visible meaning search just visible frames, |
900 | 0 meaning search visible and iconified frames, | |
644b477c | 901 | or a window, meaning search the frame that window belongs to. */ |
c6e73093 | 902 | #endif |
7ab12479 JB |
903 | |
904 | /* Do this loop at least once, to get the next window, and perhaps | |
905 | again, if we hit the minibuffer and that is not acceptable. */ | |
906 | do | |
907 | { | |
908 | /* Find a window that actually has a next one. This loop | |
909 | climbs up the tree. */ | |
265a9e55 JB |
910 | while (tem = XWINDOW (window)->next, NILP (tem)) |
911 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 912 | window = tem; |
d5783c40 | 913 | else |
7ab12479 | 914 | { |
44fa5b1e JB |
915 | /* We've reached the end of this frame. |
916 | Which other frames are acceptable? */ | |
917 | tem = WINDOW_FRAME (XWINDOW (window)); | |
918 | #ifdef MULTI_FRAME | |
919 | if (! NILP (all_frames)) | |
1bb80f72 RS |
920 | { |
921 | Lisp_Object tem1; | |
922 | ||
923 | tem1 = tem; | |
924 | tem = next_frame (tem, all_frames); | |
925 | /* In the case where the minibuffer is active, | |
926 | and we include its frame as well as the selected one, | |
927 | next_frame may get stuck in that frame. | |
928 | If that happens, go back to the selected frame | |
929 | so we can complete the cycle. */ | |
930 | if (EQ (tem, tem1)) | |
931 | XSET (tem, Lisp_Frame, selected_frame); | |
932 | } | |
7ab12479 | 933 | #endif |
44fa5b1e | 934 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 935 | |
7ab12479 JB |
936 | break; |
937 | } | |
938 | ||
939 | window = tem; | |
d5783c40 | 940 | |
7ab12479 JB |
941 | /* If we're in a combination window, find its first child and |
942 | recurse on that. Otherwise, we've found the window we want. */ | |
943 | while (1) | |
944 | { | |
265a9e55 | 945 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 946 | window = XWINDOW (window)->hchild; |
265a9e55 | 947 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
948 | window = XWINDOW (window)->vchild; |
949 | else break; | |
950 | } | |
951 | } | |
d5783c40 JB |
952 | /* Which windows are acceptible? |
953 | Exit the loop and accept this window if | |
7ab12479 | 954 | this isn't a minibuffer window, or |
d5783c40 JB |
955 | we're accepting minibuffer windows, or |
956 | we've come all the way around and we're back at the original window. */ | |
7ab12479 | 957 | while (MINI_WINDOW_P (XWINDOW (window)) |
d5783c40 | 958 | && ! EQ (minibuf, Qt) |
7f4161e0 | 959 | && ! EQ (window, start_window)); |
7ab12479 JB |
960 | |
961 | return window; | |
962 | } | |
963 | ||
26f6279d JB |
964 | /* This comment supplies the doc string for `previous-window', |
965 | for make-docfile to see. We cannot put this in the real DEFUN | |
966 | due to limits in the Unix cpp. | |
967 | ||
968 | DEFUN ("previous-window", Ffoo, Sfoo, 0, 3, 0, | |
d5783c40 JB |
969 | "Return the window preceeding WINDOW in canonical ordering of windows.\n\ |
970 | If omitted, WINDOW defaults to the selected window.\n\ | |
971 | \n\ | |
972 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
973 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
974 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
975 | minibuffer even if it is active.\n\ | |
976 | \n\ | |
44fa5b1e JB |
977 | Several frames may share a single minibuffer; if the minibuffer\n\ |
978 | counts, all windows on all frames that share that minibuffer count\n\ | |
ed160f1f | 979 | too. Therefore, `previous-window' can be used to iterate through\n\ |
44fa5b1e | 980 | the set of windows even when the minibuffer is on another frame. If\n\ |
ed160f1f | 981 | the minibuffer does not count, only windows from WINDOW's frame count\n\ |
d5783c40 | 982 | \n\ |
44fa5b1e JB |
983 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
984 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
89bca612 | 985 | above. ALL-FRAMES = `visible' means include windows on all visible frames.\n\ |
f812f9c6 | 986 | ALL-FRAMES = 0 means include windows on all visible and iconified frames.\n\ |
89bca612 | 987 | Anything else means restrict to WINDOW's frame.\n\ |
dbc4e1c1 JB |
988 | \n\ |
989 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use\n\ | |
990 | `previous-window' to iterate through the entire cycle of acceptable\n\ | |
991 | windows, eventually ending up back at the window you started with.\n\ | |
992 | `next-window' traverses the same cycle, in the reverse order.") | |
26f6279d JB |
993 | (window, minibuf, all_frames) */ |
994 | ||
995 | ||
996 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, | |
997 | 0) | |
44fa5b1e JB |
998 | (window, minibuf, all_frames) |
999 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
1000 | { |
1001 | register Lisp_Object tem; | |
d5783c40 | 1002 | Lisp_Object start_window; |
7ab12479 | 1003 | |
265a9e55 | 1004 | if (NILP (window)) |
7ab12479 JB |
1005 | window = selected_window; |
1006 | else | |
605be8af | 1007 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 1008 | |
d5783c40 JB |
1009 | start_window = window; |
1010 | ||
1011 | /* minibuf == nil may or may not include minibuffers. | |
1012 | Decide if it does. */ | |
265a9e55 | 1013 | if (NILP (minibuf)) |
d5783c40 JB |
1014 | minibuf = (minibuf_level ? Qt : Qlambda); |
1015 | ||
c6e73093 | 1016 | #ifdef MULTI_FRAME |
44fa5b1e JB |
1017 | /* all_frames == nil doesn't specify which frames to include. |
1018 | Decide which frames it includes. */ | |
1019 | if (NILP (all_frames)) | |
1020 | all_frames = (EQ (minibuf, Qt) | |
1021 | ? (FRAME_MINIBUF_WINDOW | |
1022 | (XFRAME | |
1023 | (WINDOW_FRAME | |
d5783c40 JB |
1024 | (XWINDOW (window))))) |
1025 | : Qnil); | |
89bca612 RS |
1026 | else if (EQ (all_frames, Qvisible)) |
1027 | ; | |
f812f9c6 RS |
1028 | else if (XFASTINT (all_frames) == 0) |
1029 | ; | |
44fa5b1e JB |
1030 | else if (! EQ (all_frames, Qt)) |
1031 | all_frames = Qnil; | |
644b477c RS |
1032 | /* Now all_frames is t meaning search all frames, |
1033 | nil meaning search just current frame, | |
f812f9c6 RS |
1034 | visible meaning search just visible frames, |
1035 | 0 meaning search visible and iconified frames, | |
644b477c | 1036 | or a window, meaning search the frame that window belongs to. */ |
c6e73093 | 1037 | #endif |
7ab12479 JB |
1038 | |
1039 | /* Do this loop at least once, to get the previous window, and perhaps | |
1040 | again, if we hit the minibuffer and that is not acceptable. */ | |
1041 | do | |
1042 | { | |
1043 | /* Find a window that actually has a previous one. This loop | |
1044 | climbs up the tree. */ | |
265a9e55 JB |
1045 | while (tem = XWINDOW (window)->prev, NILP (tem)) |
1046 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 1047 | window = tem; |
d5783c40 | 1048 | else |
7ab12479 | 1049 | { |
44fa5b1e JB |
1050 | /* We have found the top window on the frame. |
1051 | Which frames are acceptable? */ | |
1052 | tem = WINDOW_FRAME (XWINDOW (window)); | |
1053 | #ifdef MULTI_FRAME | |
1054 | if (! NILP (all_frames)) | |
dbc4e1c1 JB |
1055 | /* It's actually important that we use prev_frame here, |
1056 | rather than next_frame. All the windows acceptable | |
1057 | according to the given parameters should form a ring; | |
1058 | Fnext_window and Fprevious_window should go back and | |
1059 | forth around the ring. If we use next_frame here, | |
1060 | then Fnext_window and Fprevious_window take different | |
1061 | paths through the set of acceptable windows. | |
1062 | window_loop assumes that these `ring' requirement are | |
1063 | met. */ | |
1bb80f72 RS |
1064 | { |
1065 | Lisp_Object tem1; | |
1066 | ||
1067 | tem1 = tem; | |
1068 | tem = prev_frame (tem, all_frames); | |
1069 | /* In the case where the minibuffer is active, | |
1070 | and we include its frame as well as the selected one, | |
1071 | next_frame may get stuck in that frame. | |
1072 | If that happens, go back to the selected frame | |
1073 | so we can complete the cycle. */ | |
1074 | if (EQ (tem, tem1)) | |
1075 | XSET (tem, Lisp_Frame, selected_frame); | |
1076 | } | |
7ab12479 | 1077 | #endif |
644b477c RS |
1078 | /* If this frame has a minibuffer, find that window first, |
1079 | because it is conceptually the last window in that frame. */ | |
5e12e32f JB |
1080 | if (FRAME_HAS_MINIBUF_P (XFRAME (tem))) |
1081 | tem = FRAME_MINIBUF_WINDOW (XFRAME (tem)); | |
1082 | else | |
644b477c | 1083 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 1084 | |
7ab12479 JB |
1085 | break; |
1086 | } | |
1087 | ||
1088 | window = tem; | |
1089 | /* If we're in a combination window, find its last child and | |
1090 | recurse on that. Otherwise, we've found the window we want. */ | |
1091 | while (1) | |
1092 | { | |
265a9e55 | 1093 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 1094 | window = XWINDOW (window)->hchild; |
265a9e55 | 1095 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
1096 | window = XWINDOW (window)->vchild; |
1097 | else break; | |
265a9e55 | 1098 | while (tem = XWINDOW (window)->next, !NILP (tem)) |
7ab12479 JB |
1099 | window = tem; |
1100 | } | |
1101 | } | |
d5783c40 JB |
1102 | /* Which windows are acceptable? |
1103 | Exit the loop and accept this window if | |
7ab12479 | 1104 | this isn't a minibuffer window, or |
d5783c40 JB |
1105 | we're accepting minibuffer windows, or |
1106 | we've come all the way around and we're back at the original window. */ | |
7ab12479 | 1107 | while (MINI_WINDOW_P (XWINDOW (window)) |
d5783c40 | 1108 | && !EQ (minibuf, Qt) |
7f4161e0 | 1109 | && !EQ (window, start_window)); |
7ab12479 JB |
1110 | |
1111 | return window; | |
1112 | } | |
1113 | ||
62c07cc7 | 1114 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
44fa5b1e JB |
1115 | "Select the ARG'th different window on this frame.\n\ |
1116 | All windows on current frame are arranged in a cyclic order.\n\ | |
7ab12479 JB |
1117 | This command selects the window ARG steps away in that order.\n\ |
1118 | A negative ARG moves in the opposite order. If the optional second\n\ | |
44fa5b1e JB |
1119 | argument ALL_FRAMES is non-nil, cycle through all frames.") |
1120 | (n, all_frames) | |
1121 | register Lisp_Object n, all_frames; | |
7ab12479 JB |
1122 | { |
1123 | register int i; | |
1124 | register Lisp_Object w; | |
1125 | ||
1126 | CHECK_NUMBER (n, 0); | |
1127 | w = selected_window; | |
1128 | i = XINT (n); | |
1129 | ||
1130 | while (i > 0) | |
1131 | { | |
44fa5b1e | 1132 | w = Fnext_window (w, Qnil, all_frames); |
7ab12479 JB |
1133 | i--; |
1134 | } | |
1135 | while (i < 0) | |
1136 | { | |
44fa5b1e | 1137 | w = Fprevious_window (w, Qnil, all_frames); |
7ab12479 JB |
1138 | i++; |
1139 | } | |
1140 | Fselect_window (w); | |
1141 | return Qnil; | |
1142 | } | |
1143 | \f | |
1144 | /* Look at all windows, performing an operation specified by TYPE | |
1145 | with argument OBJ. | |
75d8f668 | 1146 | If FRAMES is Qt, look at all frames; |
75d8f668 | 1147 | Qnil, look at just the selected frame; |
89bca612 | 1148 | Qvisible, look at visible frames; |
75d8f668 | 1149 | a frame, just look at windows on that frame. |
7ab12479 JB |
1150 | If MINI is non-zero, perform the operation on minibuffer windows too. |
1151 | */ | |
1152 | ||
1153 | enum window_loop | |
1154 | { | |
1155 | WINDOW_LOOP_UNUSED, | |
1156 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
1157 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
1158 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
1159 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1160 | GET_LARGEST_WINDOW, | |
a68c0d3b | 1161 | UNSHOW_BUFFER /* Arg is buffer */ |
7ab12479 JB |
1162 | }; |
1163 | ||
1164 | static Lisp_Object | |
44fa5b1e | 1165 | window_loop (type, obj, mini, frames) |
7ab12479 | 1166 | enum window_loop type; |
44fa5b1e | 1167 | register Lisp_Object obj, frames; |
7ab12479 JB |
1168 | int mini; |
1169 | { | |
1170 | register Lisp_Object w; | |
1171 | register Lisp_Object best_window; | |
1172 | register Lisp_Object next_window; | |
4b206065 | 1173 | register Lisp_Object last_window; |
44fa5b1e | 1174 | FRAME_PTR frame; |
89bca612 RS |
1175 | Lisp_Object frame_arg; |
1176 | frame_arg = Qt; | |
44fa5b1e | 1177 | |
4b206065 | 1178 | #ifdef MULTI_FRAME |
44fa5b1e JB |
1179 | /* If we're only looping through windows on a particular frame, |
1180 | frame points to that frame. If we're looping through windows | |
1181 | on all frames, frame is 0. */ | |
1182 | if (FRAMEP (frames)) | |
1183 | frame = XFRAME (frames); | |
1184 | else if (NILP (frames)) | |
1185 | frame = selected_frame; | |
7ab12479 | 1186 | else |
44fa5b1e | 1187 | frame = 0; |
89bca612 RS |
1188 | if (frame) |
1189 | frame_arg = Qlambda; | |
f812f9c6 RS |
1190 | else if (XFASTINT (frames) == 0) |
1191 | frame_arg = frames; | |
89bca612 RS |
1192 | else if (EQ (frames, Qvisible)) |
1193 | frame_arg = frames; | |
4b206065 JB |
1194 | #else |
1195 | frame = 0; | |
1196 | #endif | |
7ab12479 | 1197 | |
89bca612 RS |
1198 | /* frame_arg is Qlambda to stick to one frame, |
1199 | Qvisible to consider all visible frames, | |
1200 | or Qt otherwise. */ | |
1201 | ||
7ab12479 JB |
1202 | /* Pick a window to start with. */ |
1203 | if (XTYPE (obj) == Lisp_Window) | |
4b206065 | 1204 | w = obj; |
44fa5b1e | 1205 | else if (frame) |
4b206065 | 1206 | w = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 1207 | else |
4b206065 JB |
1208 | w = FRAME_SELECTED_WINDOW (selected_frame); |
1209 | ||
1210 | /* Figure out the last window we're going to mess with. Since | |
1211 | Fnext_window, given the same options, is guaranteed to go in a | |
1212 | ring, we can just use Fprevious_window to find the last one. | |
1213 | ||
1214 | We can't just wait until we hit the first window again, because | |
1215 | it might be deleted. */ | |
1216 | ||
89bca612 | 1217 | last_window = Fprevious_window (w, mini ? Qt : Qnil, frame_arg); |
7ab12479 | 1218 | |
7ab12479 | 1219 | best_window = Qnil; |
4b206065 | 1220 | for (;;) |
7ab12479 | 1221 | { |
75d8f668 JB |
1222 | FRAME_PTR w_frame = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
1223 | ||
7ab12479 JB |
1224 | /* Pick the next window now, since some operations will delete |
1225 | the current window. */ | |
89bca612 | 1226 | next_window = Fnext_window (w, mini ? Qt : Qnil, frame_arg); |
7ab12479 | 1227 | |
d29a5631 RS |
1228 | /* Note that we do not pay attention here to whether |
1229 | the frame is visible, since Fnext_window skips non-visible frames | |
1230 | if that is desired, under the control of frame_arg. */ | |
75d8f668 | 1231 | if (! MINI_WINDOW_P (XWINDOW (w)) |
7ab12479 JB |
1232 | || (mini && minibuf_level > 0)) |
1233 | switch (type) | |
1234 | { | |
1235 | case GET_BUFFER_WINDOW: | |
7ab12479 JB |
1236 | if (XBUFFER (XWINDOW (w)->buffer) == XBUFFER (obj)) |
1237 | return w; | |
1238 | break; | |
1239 | ||
1240 | case GET_LRU_WINDOW: | |
1241 | /* t as arg means consider only full-width windows */ | |
e5d77022 | 1242 | if (!NILP (obj) && XFASTINT (XWINDOW (w)->width) |
a2db42d6 | 1243 | != FRAME_WIDTH (XFRAME (WINDOW_FRAME (XWINDOW (w))))) |
7ab12479 | 1244 | break; |
7ab12479 JB |
1245 | /* Ignore dedicated windows and minibuffers. */ |
1246 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1247 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 | 1248 | break; |
265a9e55 | 1249 | if (NILP (best_window) |
7ab12479 JB |
1250 | || (XFASTINT (XWINDOW (best_window)->use_time) |
1251 | > XFASTINT (XWINDOW (w)->use_time))) | |
1252 | best_window = w; | |
1253 | break; | |
1254 | ||
1255 | case DELETE_OTHER_WINDOWS: | |
1256 | if (XWINDOW (w) != XWINDOW (obj)) | |
1257 | Fdelete_window (w); | |
1258 | break; | |
1259 | ||
1260 | case DELETE_BUFFER_WINDOWS: | |
1261 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1262 | { | |
1263 | /* If we're deleting the buffer displayed in the only window | |
44fa5b1e | 1264 | on the frame, find a new buffer to display there. */ |
265a9e55 | 1265 | if (NILP (XWINDOW (w)->parent)) |
7ab12479 | 1266 | { |
12cae7c0 KH |
1267 | Lisp_Object new_buffer; |
1268 | new_buffer = Fother_buffer (obj, Qnil); | |
265a9e55 | 1269 | if (NILP (new_buffer)) |
7ab12479 JB |
1270 | new_buffer |
1271 | = Fget_buffer_create (build_string ("*scratch*")); | |
1272 | Fset_window_buffer (w, new_buffer); | |
d895abb0 RS |
1273 | if (EQ (w, selected_window)) |
1274 | Fset_buffer (XWINDOW (w)->buffer); | |
7ab12479 JB |
1275 | } |
1276 | else | |
1277 | Fdelete_window (w); | |
1278 | } | |
1279 | break; | |
1280 | ||
1281 | case GET_LARGEST_WINDOW: | |
7ab12479 JB |
1282 | /* Ignore dedicated windows and minibuffers. */ |
1283 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1284 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 JB |
1285 | break; |
1286 | { | |
1287 | struct window *best_window_ptr = XWINDOW (best_window); | |
1288 | struct window *w_ptr = XWINDOW (w); | |
6b54027b RS |
1289 | if (NILP (best_window) |
1290 | || (XFASTINT (w_ptr->height) * XFASTINT (w_ptr->width) | |
1291 | > (XFASTINT (best_window_ptr->height) | |
1292 | * XFASTINT (best_window_ptr->width)))) | |
7ab12479 JB |
1293 | best_window = w; |
1294 | } | |
1295 | break; | |
1296 | ||
1297 | case UNSHOW_BUFFER: | |
1298 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1299 | { | |
1300 | /* Find another buffer to show in this window. */ | |
12cae7c0 | 1301 | Lisp_Object another_buffer; |
38ab08d1 | 1302 | FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w))); |
12cae7c0 | 1303 | another_buffer = Fother_buffer (obj, Qnil); |
265a9e55 | 1304 | if (NILP (another_buffer)) |
7ab12479 JB |
1305 | another_buffer |
1306 | = Fget_buffer_create (build_string ("*scratch*")); | |
38ab08d1 RS |
1307 | #ifdef MULTI_FRAME |
1308 | /* If this window is dedicated, and in a frame of its own, | |
1309 | kill the frame. */ | |
1310 | if (EQ (w, FRAME_ROOT_WINDOW (f)) | |
596122a7 | 1311 | && !NILP (XWINDOW (w)->dedicated) |
38ab08d1 RS |
1312 | && other_visible_frames (f)) |
1313 | Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil); | |
1314 | else | |
1315 | #endif | |
1316 | { | |
1317 | /* Otherwise show a different buffer in the window. */ | |
1318 | XWINDOW (w)->dedicated = Qnil; | |
1319 | Fset_window_buffer (w, another_buffer); | |
1320 | if (EQ (w, selected_window)) | |
1321 | Fset_buffer (XWINDOW (w)->buffer); | |
1322 | } | |
7ab12479 JB |
1323 | } |
1324 | break; | |
1325 | } | |
4b206065 JB |
1326 | |
1327 | if (EQ (w, last_window)) | |
1328 | break; | |
1329 | ||
7ab12479 JB |
1330 | w = next_window; |
1331 | } | |
7ab12479 JB |
1332 | |
1333 | return best_window; | |
1334 | } | |
605be8af | 1335 | |
7ab12479 JB |
1336 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, |
1337 | "Return the window least recently selected or used for display.\n\ | |
89bca612 | 1338 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1339 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1340 | If FRAME is t, search all frames.\n\ |
1341 | If FRAME is nil, search only the selected frame.\n\ | |
1342 | If FRAME is a frame, search only that frame.") | |
1343 | (frame) | |
1344 | Lisp_Object frame; | |
7ab12479 JB |
1345 | { |
1346 | register Lisp_Object w; | |
1347 | /* First try for a window that is full-width */ | |
89bca612 | 1348 | w = window_loop (GET_LRU_WINDOW, Qt, 0, frame); |
265a9e55 | 1349 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
1350 | return w; |
1351 | /* If none of them, try the rest */ | |
89bca612 | 1352 | return window_loop (GET_LRU_WINDOW, Qnil, 0, frame); |
7ab12479 JB |
1353 | } |
1354 | ||
1355 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
1356 | "Return the largest window in area.\n\ | |
89bca612 | 1357 | If optional argument FRAME is `visible', search all visible frames.\n\ |
cee67da9 | 1358 | If FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 RS |
1359 | If FRAME is t, search all frames.\n\ |
1360 | If FRAME is nil, search only the selected frame.\n\ | |
1361 | If FRAME is a frame, search only that frame.") | |
44fa5b1e JB |
1362 | (frame) |
1363 | Lisp_Object frame; | |
7ab12479 JB |
1364 | { |
1365 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
44fa5b1e | 1366 | frame); |
7ab12479 JB |
1367 | } |
1368 | ||
1369 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
1370 | "Return a window currently displaying BUFFER, or nil if none.\n\ | |
89bca612 | 1371 | If optional argument FRAME is `visible', search all visible frames.\n\ |
f812f9c6 | 1372 | If optional argument FRAME is 0, search all visible and iconified frames.\n\ |
89bca612 | 1373 | If FRAME is t, search all frames.\n\ |
1bc981d2 | 1374 | If FRAME is nil, search only the selected frame.\n\ |
89bca612 | 1375 | If FRAME is a frame, search only that frame.") |
44fa5b1e JB |
1376 | (buffer, frame) |
1377 | Lisp_Object buffer, frame; | |
7ab12479 JB |
1378 | { |
1379 | buffer = Fget_buffer (buffer); | |
1380 | if (XTYPE (buffer) == Lisp_Buffer) | |
44fa5b1e | 1381 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
1382 | else |
1383 | return Qnil; | |
1384 | } | |
1385 | ||
1386 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
1387 | 0, 1, "", | |
44fa5b1e | 1388 | "Make WINDOW (or the selected window) fill its frame.\n\ |
f16a1ed3 RS |
1389 | Only the frame WINDOW is on is affected.\n\ |
1390 | This function tries to reduce display jumps\n\ | |
1391 | by keeping the text previously visible in WINDOW\n\ | |
1392 | in the same place on the frame. Doing this depends on\n\ | |
1393 | the value of (window-start WINDOW), so if calling this function\n\ | |
1394 | in a program gives strange scrolling, make sure the window-start\n\ | |
1395 | value is reasonable when this function is called.") | |
7ab12479 JB |
1396 | (window) |
1397 | Lisp_Object window; | |
1398 | { | |
1399 | struct window *w; | |
00d3d838 | 1400 | int startpos; |
7ab12479 JB |
1401 | int top; |
1402 | ||
265a9e55 | 1403 | if (NILP (window)) |
7ab12479 JB |
1404 | window = selected_window; |
1405 | else | |
605be8af | 1406 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1407 | |
1408 | w = XWINDOW (window); | |
00d3d838 KH |
1409 | startpos = marker_position (w->start); |
1410 | top = XFASTINT (w->top) - FRAME_MENU_BAR_LINES (XFRAME (WINDOW_FRAME (w))); | |
7ab12479 | 1411 | |
70728a80 | 1412 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 1413 | |
00d3d838 KH |
1414 | /* Try to minimize scrolling, by setting the window start to the point |
1415 | will cause the text at the old window start to be at the same place | |
1416 | on the frame. But don't try to do this if the window start is | |
1417 | outside the visible portion (as might happen when the display is | |
1418 | not current, due to typeahead). */ | |
1419 | if (startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
1420 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) | |
1421 | { | |
1422 | struct position pos; | |
1423 | struct buffer *obuf = current_buffer; | |
1424 | ||
1425 | Fset_buffer (w->buffer); | |
1426 | /* This computation used to temporarily move point, but that can | |
1427 | have unwanted side effects due to text properties. */ | |
1428 | pos = *vmotion (startpos, -top, window_internal_width (w) - 1, | |
1429 | XINT (w->hscroll), window); | |
1430 | Fset_marker (w->start, make_number (pos.bufpos), w->buffer); | |
1431 | w->start_at_line_beg = ((pos.bufpos == BEGV | |
1432 | || FETCH_CHAR (pos.bufpos - 1) == '\n') ? Qt | |
1433 | : Qnil); | |
1434 | ||
1435 | set_buffer_internal (obuf); | |
1436 | } | |
7ab12479 JB |
1437 | return Qnil; |
1438 | } | |
1439 | ||
1440 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
3cbbb729 | 1441 | 1, 2, "bDelete windows on (buffer): ", |
26f6279d JB |
1442 | "Delete all windows showing BUFFER.\n\ |
1443 | Optional second argument FRAME controls which frames are affected.\n\ | |
1444 | If nil or omitted, delete all windows showing BUFFER in any frame.\n\ | |
1445 | If t, delete only windows showing BUFFER in the selected frame.\n\ | |
89bca612 | 1446 | If `visible', delete all windows showing BUFFER in any visible frame.\n\ |
26f6279d JB |
1447 | If a frame, delete only windows showing BUFFER in that frame.") |
1448 | (buffer, frame) | |
1449 | Lisp_Object buffer, frame; | |
7ab12479 | 1450 | { |
26f6279d JB |
1451 | #ifdef MULTI_FRAME |
1452 | /* FRAME uses t and nil to mean the opposite of what window_loop | |
1453 | expects. */ | |
1454 | if (! FRAMEP (frame)) | |
1455 | frame = NILP (frame) ? Qt : Qnil; | |
1456 | #else | |
1457 | frame = Qt; | |
1458 | #endif | |
1459 | ||
265a9e55 | 1460 | if (!NILP (buffer)) |
7ab12479 JB |
1461 | { |
1462 | buffer = Fget_buffer (buffer); | |
1463 | CHECK_BUFFER (buffer, 0); | |
26f6279d | 1464 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 JB |
1465 | } |
1466 | return Qnil; | |
1467 | } | |
1468 | ||
1469 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
1470 | Sreplace_buffer_in_windows, | |
1471 | 1, 1, "bReplace buffer in windows: ", | |
1472 | "Replace BUFFER with some other buffer in all windows showing it.") | |
1473 | (buffer) | |
1474 | Lisp_Object buffer; | |
1475 | { | |
265a9e55 | 1476 | if (!NILP (buffer)) |
7ab12479 JB |
1477 | { |
1478 | buffer = Fget_buffer (buffer); | |
1479 | CHECK_BUFFER (buffer, 0); | |
1480 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
1481 | } | |
1482 | return Qnil; | |
1483 | } | |
1484 | \f | |
1485 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
1486 | |
1487 | /* The smallest acceptable dimensions for a window. Anything smaller | |
1488 | might crash Emacs. */ | |
1489 | #define MIN_SAFE_WINDOW_WIDTH (2) | |
1490 | #define MIN_SAFE_WINDOW_HEIGHT (2) | |
1491 | ||
1492 | /* Make sure that window_min_height and window_min_width are | |
1493 | not too small; if they are, set them to safe minima. */ | |
1494 | ||
1495 | static void | |
1496 | check_min_window_sizes () | |
1497 | { | |
1498 | /* Smaller values might permit a crash. */ | |
1499 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
1500 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
1501 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
1502 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
1503 | } | |
1504 | ||
1505 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
1506 | minimum allowable size. */ | |
605be8af | 1507 | void |
a481b3ea | 1508 | check_frame_size (frame, rows, cols) |
605be8af JB |
1509 | FRAME_PTR frame; |
1510 | int *rows, *cols; | |
a481b3ea | 1511 | { |
628df3bf JB |
1512 | /* For height, we have to see: |
1513 | whether the frame has a minibuffer, | |
1514 | whether it wants a mode line, and | |
1515 | whether it has a menu bar. */ | |
a481b3ea | 1516 | int min_height = |
79f92720 JB |
1517 | (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1 |
1518 | : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT | |
a481b3ea | 1519 | : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); |
628df3bf JB |
1520 | if (FRAME_MENU_BAR_LINES (frame) > 0) |
1521 | min_height += FRAME_MENU_BAR_LINES (frame); | |
a481b3ea JB |
1522 | |
1523 | if (*rows < min_height) | |
1524 | *rows = min_height; | |
1525 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
1526 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
1527 | } | |
1528 | ||
7ab12479 JB |
1529 | /* Normally the window is deleted if it gets too small. |
1530 | nodelete nonzero means do not do this. | |
1531 | (The caller should check later and do so if appropriate) */ | |
1532 | ||
1533 | set_window_height (window, height, nodelete) | |
1534 | Lisp_Object window; | |
1535 | int height; | |
1536 | int nodelete; | |
1537 | { | |
1538 | register struct window *w = XWINDOW (window); | |
1539 | register struct window *c; | |
1540 | int oheight = XFASTINT (w->height); | |
1541 | int top, pos, lastbot, opos, lastobot; | |
1542 | Lisp_Object child; | |
1543 | ||
a481b3ea JB |
1544 | check_min_window_sizes (); |
1545 | ||
7ab12479 | 1546 | if (!nodelete |
265a9e55 | 1547 | && ! NILP (w->parent) |
7ab12479 JB |
1548 | && height < window_min_height) |
1549 | { | |
1550 | Fdelete_window (window); | |
1551 | return; | |
1552 | } | |
1553 | ||
1554 | XFASTINT (w->last_modified) = 0; | |
1555 | windows_or_buffers_changed++; | |
1556 | XFASTINT (w->height) = height; | |
265a9e55 | 1557 | if (!NILP (w->hchild)) |
7ab12479 | 1558 | { |
265a9e55 | 1559 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1560 | { |
1561 | XWINDOW (child)->top = w->top; | |
1562 | set_window_height (child, height, nodelete); | |
1563 | } | |
1564 | } | |
265a9e55 | 1565 | else if (!NILP (w->vchild)) |
7ab12479 JB |
1566 | { |
1567 | lastbot = top = XFASTINT (w->top); | |
1568 | lastobot = 0; | |
265a9e55 | 1569 | for (child = w->vchild; !NILP (child); child = c->next) |
7ab12479 JB |
1570 | { |
1571 | c = XWINDOW (child); | |
1572 | ||
1573 | opos = lastobot + XFASTINT (c->height); | |
1574 | ||
1575 | XFASTINT (c->top) = lastbot; | |
1576 | ||
1577 | pos = (((opos * height) << 1) + oheight) / (oheight << 1); | |
1578 | ||
1579 | /* Avoid confusion: inhibit deletion of child if becomes too small */ | |
1580 | set_window_height (child, pos + top - lastbot, 1); | |
1581 | ||
1582 | /* Now advance child to next window, | |
1583 | and set lastbot if child was not just deleted. */ | |
1584 | lastbot = pos + top; | |
1585 | lastobot = opos; | |
1586 | } | |
1587 | /* Now delete any children that became too small. */ | |
1588 | if (!nodelete) | |
265a9e55 | 1589 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1590 | { |
1591 | set_window_height (child, XINT (XWINDOW (child)->height), 0); | |
1592 | } | |
1593 | } | |
1594 | } | |
1595 | ||
1596 | /* Recursively set width of WINDOW and its inferiors. */ | |
1597 | ||
1598 | set_window_width (window, width, nodelete) | |
1599 | Lisp_Object window; | |
1600 | int width; | |
1601 | int nodelete; | |
1602 | { | |
1603 | register struct window *w = XWINDOW (window); | |
1604 | register struct window *c; | |
1605 | int owidth = XFASTINT (w->width); | |
1606 | int left, pos, lastright, opos, lastoright; | |
1607 | Lisp_Object child; | |
1608 | ||
abdced83 | 1609 | if (!nodelete && width < window_min_width && !NILP (w->parent)) |
7ab12479 JB |
1610 | { |
1611 | Fdelete_window (window); | |
1612 | return; | |
1613 | } | |
1614 | ||
1615 | XFASTINT (w->last_modified) = 0; | |
1616 | windows_or_buffers_changed++; | |
1617 | XFASTINT (w->width) = width; | |
265a9e55 | 1618 | if (!NILP (w->vchild)) |
7ab12479 | 1619 | { |
265a9e55 | 1620 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1621 | { |
1622 | XWINDOW (child)->left = w->left; | |
1623 | set_window_width (child, width, nodelete); | |
1624 | } | |
1625 | } | |
265a9e55 | 1626 | else if (!NILP (w->hchild)) |
7ab12479 JB |
1627 | { |
1628 | lastright = left = XFASTINT (w->left); | |
1629 | lastoright = 0; | |
265a9e55 | 1630 | for (child = w->hchild; !NILP (child); child = c->next) |
7ab12479 JB |
1631 | { |
1632 | c = XWINDOW (child); | |
1633 | ||
1634 | opos = lastoright + XFASTINT (c->width); | |
1635 | ||
1636 | XFASTINT (c->left) = lastright; | |
1637 | ||
1638 | pos = (((opos * width) << 1) + owidth) / (owidth << 1); | |
1639 | ||
1640 | /* Inhibit deletion for becoming too small */ | |
1641 | set_window_width (child, pos + left - lastright, 1); | |
1642 | ||
1643 | /* Now advance child to next window, | |
1644 | and set lastright if child was not just deleted. */ | |
1645 | lastright = pos + left, lastoright = opos; | |
1646 | } | |
1647 | /* Delete children that became too small */ | |
1648 | if (!nodelete) | |
265a9e55 | 1649 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1650 | { |
1651 | set_window_width (child, XINT (XWINDOW (child)->width), 0); | |
1652 | } | |
1653 | } | |
1654 | } | |
1655 | \f | |
1d8d96fa | 1656 | int window_select_count; |
7ab12479 JB |
1657 | |
1658 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 2, 0, | |
1659 | "Make WINDOW display BUFFER as its contents.\n\ | |
1660 | BUFFER can be a buffer or buffer name.") | |
1661 | (window, buffer) | |
1662 | register Lisp_Object window, buffer; | |
1663 | { | |
1664 | register Lisp_Object tem; | |
1665 | register struct window *w = decode_window (window); | |
1666 | ||
1667 | buffer = Fget_buffer (buffer); | |
1668 | CHECK_BUFFER (buffer, 1); | |
1669 | ||
265a9e55 | 1670 | if (NILP (XBUFFER (buffer)->name)) |
7ab12479 JB |
1671 | error ("Attempt to display deleted buffer"); |
1672 | ||
1673 | tem = w->buffer; | |
265a9e55 | 1674 | if (NILP (tem)) |
7ab12479 JB |
1675 | error ("Window is deleted"); |
1676 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
1677 | is first being set up. */ | |
1678 | { | |
265a9e55 | 1679 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) |
3cf85532 RS |
1680 | error ("Window is dedicated to `%s'", |
1681 | XSTRING (XBUFFER (tem)->name)->data); | |
7ab12479 JB |
1682 | |
1683 | unshow_buffer (w); | |
1684 | } | |
1685 | ||
1686 | w->buffer = buffer; | |
5a41ab94 RS |
1687 | w->window_end_pos = 0; |
1688 | w->window_end_valid = Qnil; | |
270967b2 | 1689 | w->hscroll = 0; |
7ab12479 JB |
1690 | Fset_marker (w->pointm, |
1691 | make_number (BUF_PT (XBUFFER (buffer))), | |
1692 | buffer); | |
1693 | set_marker_restricted (w->start, | |
1694 | make_number (XBUFFER (buffer)->last_window_start), | |
1695 | buffer); | |
1696 | w->start_at_line_beg = Qnil; | |
e36ab06b | 1697 | w->force_start = Qnil; |
7ab12479 JB |
1698 | XFASTINT (w->last_modified) = 0; |
1699 | windows_or_buffers_changed++; | |
1700 | if (EQ (window, selected_window)) | |
1701 | Fset_buffer (buffer); | |
1702 | ||
1703 | return Qnil; | |
1704 | } | |
1705 | ||
1706 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 1, 0, | |
1707 | "Select WINDOW. Most editing will apply to WINDOW's buffer.\n\ | |
1708 | The main editor command loop selects the buffer of the selected window\n\ | |
1709 | before each command.") | |
1710 | (window) | |
1711 | register Lisp_Object window; | |
1712 | { | |
1713 | register struct window *w; | |
1714 | register struct window *ow = XWINDOW (selected_window); | |
1715 | ||
605be8af | 1716 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1717 | |
1718 | w = XWINDOW (window); | |
1719 | ||
265a9e55 | 1720 | if (NILP (w->buffer)) |
7ab12479 JB |
1721 | error ("Trying to select deleted window or non-leaf window"); |
1722 | ||
1723 | XFASTINT (w->use_time) = ++window_select_count; | |
1724 | if (EQ (window, selected_window)) | |
1725 | return window; | |
1726 | ||
1727 | Fset_marker (ow->pointm, make_number (BUF_PT (XBUFFER (ow->buffer))), | |
1728 | ow->buffer); | |
1729 | ||
1730 | selected_window = window; | |
44fa5b1e JB |
1731 | #ifdef MULTI_FRAME |
1732 | if (XFRAME (WINDOW_FRAME (w)) != selected_frame) | |
7ab12479 | 1733 | { |
44fa5b1e | 1734 | XFRAME (WINDOW_FRAME (w))->selected_window = window; |
147a6615 RS |
1735 | /* Use this rather than Fhandle_switch_frame |
1736 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
1737 | move around in the state where a minibuffer in a separate | |
1738 | frame is active. */ | |
1739 | Fselect_frame (WINDOW_FRAME (w), Qnil); | |
7ab12479 JB |
1740 | } |
1741 | else | |
44fa5b1e | 1742 | selected_frame->selected_window = window; |
7ab12479 JB |
1743 | #endif |
1744 | ||
1745 | record_buffer (w->buffer); | |
1746 | Fset_buffer (w->buffer); | |
1747 | ||
1748 | /* Go to the point recorded in the window. | |
1749 | This is important when the buffer is in more | |
1750 | than one window. It also matters when | |
1751 | redisplay_window has altered point after scrolling, | |
1752 | because it makes the change only in the window. */ | |
1753 | { | |
1754 | register int new_point = marker_position (w->pointm); | |
1755 | if (new_point < BEGV) | |
1756 | SET_PT (BEGV); | |
a9c95e08 | 1757 | else if (new_point > ZV) |
7ab12479 JB |
1758 | SET_PT (ZV); |
1759 | else | |
1760 | SET_PT (new_point); | |
1761 | } | |
1762 | ||
1763 | windows_or_buffers_changed++; | |
1764 | return window; | |
1765 | } | |
1766 | ||
35aaf00c | 1767 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 2, |
6648f23a | 1768 | "BDisplay buffer: \nP", |
7ab12479 JB |
1769 | "Make BUFFER appear in some window but don't select it.\n\ |
1770 | BUFFER can be a buffer or a buffer name.\n\ | |
1771 | If BUFFER is shown already in some window, just use that one,\n\ | |
1772 | unless the window is the selected window and the optional second\n\ | |
46d3268a | 1773 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg).\n\ |
5141b901 | 1774 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER.\n\ |
7ab12479 JB |
1775 | Returns the window displaying BUFFER.") |
1776 | (buffer, not_this_window) | |
1777 | register Lisp_Object buffer, not_this_window; | |
1778 | { | |
a90712c2 | 1779 | register Lisp_Object window, tem; |
7ab12479 JB |
1780 | |
1781 | buffer = Fget_buffer (buffer); | |
1782 | CHECK_BUFFER (buffer, 0); | |
1783 | ||
265a9e55 | 1784 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
1785 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
1786 | ||
265a9e55 | 1787 | if (NILP (not_this_window) |
7ab12479 JB |
1788 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
1789 | return selected_window; | |
1790 | ||
c6e73093 | 1791 | #ifdef MULTI_FRAME |
e8edb3ae | 1792 | /* If pop_up_frames, |
f812f9c6 RS |
1793 | look for a window showing BUFFER on any visible or iconified frame. */ |
1794 | window = Fget_buffer_window (buffer, pop_up_frames ? make_number (0) : Qnil); | |
c6e73093 KH |
1795 | #else |
1796 | window = Fget_buffer_window (buffer, Qnil); | |
1797 | #endif | |
265a9e55 JB |
1798 | if (!NILP (window) |
1799 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
f812f9c6 | 1800 | { |
7cab5d2c | 1801 | #ifdef MULTI_FRAME |
f812f9c6 RS |
1802 | if (FRAME_ICONIFIED_P (XFRAME (WINDOW_FRAME (XWINDOW (window))))) |
1803 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
7cab5d2c | 1804 | #endif |
f812f9c6 RS |
1805 | return window; |
1806 | } | |
7ab12479 | 1807 | |
a90712c2 RS |
1808 | /* Certain buffer names get special handling. */ |
1809 | if (! NILP (Vspecial_display_function)) | |
1810 | { | |
1811 | tem = Fmember (XBUFFER (buffer)->name, Vspecial_display_buffer_names); | |
1812 | if (!NILP (tem)) | |
1813 | return call1 (Vspecial_display_function, buffer); | |
1814 | ||
1815 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCONS (tem)->cdr) | |
1816 | if (fast_string_match (XCONS (tem)->car, XBUFFER (buffer)->name) >= 0) | |
1817 | return call1 (Vspecial_display_function, buffer); | |
1818 | } | |
1819 | ||
44fa5b1e JB |
1820 | #ifdef MULTI_FRAME |
1821 | /* If there are no frames open that have more than a minibuffer, | |
1822 | we need to create a new frame. */ | |
1823 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 1824 | { |
a90712c2 | 1825 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
7ab12479 | 1826 | Fset_window_buffer (window, buffer); |
7ab12479 JB |
1827 | return window; |
1828 | } | |
44fa5b1e | 1829 | #endif /* MULTI_FRAME */ |
7ab12479 | 1830 | |
43bad991 | 1831 | if (pop_up_windows |
44fa5b1e JB |
1832 | #ifdef MULTI_FRAME |
1833 | || FRAME_MINIBUF_ONLY_P (selected_frame) | |
cee67da9 RS |
1834 | /* If the current frame is a special display frame, |
1835 | don't try to reuse its windows. */ | |
1836 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->dedicated) | |
43bad991 JB |
1837 | #endif |
1838 | ) | |
7ab12479 | 1839 | { |
12cae7c0 KH |
1840 | Lisp_Object frames; |
1841 | ||
1842 | frames = Qnil; | |
44fa5b1e JB |
1843 | #ifdef MULTI_FRAME |
1844 | if (FRAME_MINIBUF_ONLY_P (selected_frame)) | |
1845 | XSET (frames, Lisp_Frame, last_nonminibuf_frame); | |
7ab12479 JB |
1846 | #endif |
1847 | /* Don't try to create a window if would get an error */ | |
1848 | if (split_height_threshold < window_min_height << 1) | |
1849 | split_height_threshold = window_min_height << 1; | |
1850 | ||
cee67da9 RS |
1851 | /* Note that both Fget_largest_window and Fget_lru_window |
1852 | ignore minibuffers and dedicated windows. | |
1853 | This means they can return nil. */ | |
7ab12479 | 1854 | |
cee67da9 RS |
1855 | /* If the frame we would try to split cannot be split, |
1856 | try other frames. */ | |
1857 | if (FRAME_NO_SPLIT_P (NILP (frames) ? selected_frame | |
1858 | : last_nonminibuf_frame)) | |
1859 | { | |
1860 | /* Try visible frames first. */ | |
1861 | window = Fget_largest_window (Qvisible); | |
1862 | /* If that didn't work, try iconified frames. */ | |
1863 | if (NILP (window)) | |
1864 | window = Fget_largest_window (make_number (0)); | |
1865 | if (NILP (window)) | |
1866 | window = Fget_largest_window (Qt); | |
1867 | } | |
1868 | else | |
1869 | window = Fget_largest_window (frames); | |
1870 | ||
1871 | /* If we got a tall enough full-width window, split it. */ | |
265a9e55 | 1872 | if (!NILP (window) |
7ab12479 | 1873 | && window_height (window) >= split_height_threshold |
535e0b8e JB |
1874 | && (XFASTINT (XWINDOW (window)->width) |
1875 | == FRAME_WIDTH (XFRAME (WINDOW_FRAME (XWINDOW (window)))))) | |
7ab12479 JB |
1876 | window = Fsplit_window (window, Qnil, Qnil); |
1877 | else | |
1878 | { | |
44fa5b1e | 1879 | window = Fget_lru_window (frames); |
cee67da9 RS |
1880 | /* If the LRU window is selected, and big enough, split it. */ |
1881 | if (!NILP (window) | |
1882 | && (EQ (window, selected_window) | |
1883 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
1884 | && window_height (window) >= window_min_height << 1) |
1885 | window = Fsplit_window (window, Qnil, Qnil); | |
cee67da9 RS |
1886 | #ifdef MULTI_FRAME |
1887 | /* If Fget_lru_window returned nil, try other approaches. */ | |
1888 | /* Try visible frames first. */ | |
1889 | if (NILP (window)) | |
1890 | window = Fget_largest_window (Qvisible); | |
1891 | /* If that didn't work, try iconified frames. */ | |
1892 | if (NILP (window)) | |
1893 | window = Fget_largest_window (make_number (0)); | |
1894 | /* Try invisible frames. */ | |
1895 | if (NILP (window)) | |
1896 | window = Fget_largest_window (Qt); | |
1897 | /* As a last resort, make a new frame. */ | |
1898 | if (NILP (window)) | |
1899 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1900 | #else | |
1901 | /* As a last resort, use a non minibuffer window. */ | |
1902 | if (NILP (window)) | |
1903 | window = Fframe_first_window (Fselected_frame ()); | |
1904 | #endif | |
7ab12479 JB |
1905 | } |
1906 | } | |
1907 | else | |
1908 | window = Fget_lru_window (Qnil); | |
1909 | ||
1910 | Fset_window_buffer (window, buffer); | |
1911 | return window; | |
1912 | } | |
1913 | ||
1914 | void | |
1915 | temp_output_buffer_show (buf) | |
1916 | register Lisp_Object buf; | |
1917 | { | |
1918 | register struct buffer *old = current_buffer; | |
1919 | register Lisp_Object window; | |
1920 | register struct window *w; | |
1921 | ||
1922 | Fset_buffer (buf); | |
1923 | XBUFFER (buf)->save_modified = MODIFF; | |
1924 | BEGV = BEG; | |
1925 | ZV = Z; | |
1926 | SET_PT (BEG); | |
1927 | clip_changed = 1; | |
1928 | set_buffer_internal (old); | |
1929 | ||
1930 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
1931 | call1 (Vtemp_buffer_show_function, buf); | |
1932 | else | |
1933 | { | |
1934 | window = Fdisplay_buffer (buf, Qnil); | |
1935 | ||
44fa5b1e JB |
1936 | #ifdef MULTI_FRAME |
1937 | if (XFRAME (XWINDOW (window)->frame) != selected_frame) | |
1938 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
1939 | #endif /* MULTI_FRAME */ | |
7ab12479 JB |
1940 | Vminibuf_scroll_window = window; |
1941 | w = XWINDOW (window); | |
1942 | XFASTINT (w->hscroll) = 0; | |
1943 | set_marker_restricted (w->start, make_number (1), buf); | |
1944 | set_marker_restricted (w->pointm, make_number (1), buf); | |
1945 | } | |
1946 | } | |
1947 | \f | |
1948 | static | |
1949 | make_dummy_parent (window) | |
1950 | Lisp_Object window; | |
1951 | { | |
1952 | register Lisp_Object old, new; | |
1953 | register struct window *o, *p; | |
1954 | ||
1955 | old = window; | |
1956 | XSETTYPE (old, Lisp_Vector); | |
1957 | new = Fcopy_sequence (old); | |
1958 | XSETTYPE (new, Lisp_Window); | |
1959 | ||
1960 | o = XWINDOW (old); | |
1961 | p = XWINDOW (new); | |
1962 | XFASTINT (p->sequence_number) = ++sequence_number; | |
1963 | ||
1964 | /* Put new into window structure in place of window */ | |
1965 | replace_window (window, new); | |
1966 | ||
1967 | o->next = Qnil; | |
1968 | o->prev = Qnil; | |
1969 | o->vchild = Qnil; | |
1970 | o->hchild = Qnil; | |
1971 | o->parent = new; | |
1972 | ||
1973 | p->start = Qnil; | |
1974 | p->pointm = Qnil; | |
1975 | p->buffer = Qnil; | |
1976 | } | |
1977 | ||
1978 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
1979 | "Split WINDOW, putting SIZE lines in the first of the pair.\n\ | |
1980 | WINDOW defaults to selected one and SIZE to half its size.\n\ | |
1981 | If optional third arg HOR-FLAG is non-nil, split side by side\n\ | |
1982 | and put SIZE columns in the first of the pair.") | |
1983 | (window, chsize, horflag) | |
1984 | Lisp_Object window, chsize, horflag; | |
1985 | { | |
1986 | register Lisp_Object new; | |
1987 | register struct window *o, *p; | |
1988 | register int size; | |
1989 | ||
265a9e55 | 1990 | if (NILP (window)) |
7ab12479 JB |
1991 | window = selected_window; |
1992 | else | |
605be8af | 1993 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1994 | |
1995 | o = XWINDOW (window); | |
1996 | ||
265a9e55 | 1997 | if (NILP (chsize)) |
7ab12479 | 1998 | { |
265a9e55 | 1999 | if (!NILP (horflag)) |
7ab12479 JB |
2000 | /* Round odd size up, since this is for the left-hand window, |
2001 | and it will lose a column for the separators. */ | |
2002 | size = ((XFASTINT (o->width) + 1) & -2) >> 1; | |
2003 | else | |
2004 | size = XFASTINT (o->height) >> 1; | |
2005 | } | |
2006 | else | |
2007 | { | |
2008 | CHECK_NUMBER (chsize, 1); | |
2009 | size = XINT (chsize); | |
2010 | } | |
2011 | ||
2012 | if (MINI_WINDOW_P (o)) | |
2013 | error ("Attempt to split minibuffer window"); | |
44fa5b1e JB |
2014 | else if (FRAME_NO_SPLIT_P (XFRAME (WINDOW_FRAME (o)))) |
2015 | error ("Attempt to split unsplittable frame"); | |
7ab12479 | 2016 | |
a481b3ea | 2017 | check_min_window_sizes (); |
7ab12479 | 2018 | |
265a9e55 | 2019 | if (NILP (horflag)) |
7ab12479 JB |
2020 | { |
2021 | if (size < window_min_height | |
2022 | || size + window_min_height > XFASTINT (o->height)) | |
2023 | args_out_of_range_3 (window, chsize, horflag); | |
265a9e55 JB |
2024 | if (NILP (o->parent) |
2025 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
2026 | { |
2027 | make_dummy_parent (window); | |
2028 | new = o->parent; | |
2029 | XWINDOW (new)->vchild = window; | |
2030 | } | |
2031 | } | |
2032 | else | |
2033 | { | |
2034 | if (size < window_min_width | |
2035 | || size + window_min_width > XFASTINT (o->width)) | |
2036 | args_out_of_range_3 (window, chsize, horflag); | |
265a9e55 JB |
2037 | if (NILP (o->parent) |
2038 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
2039 | { |
2040 | make_dummy_parent (window); | |
2041 | new = o->parent; | |
2042 | XWINDOW (new)->hchild = window; | |
2043 | } | |
2044 | } | |
2045 | ||
2046 | /* Now we know that window's parent is a vertical combination | |
2047 | if we are dividing vertically, or a horizontal combination | |
2048 | if we are making side-by-side windows */ | |
2049 | ||
2050 | windows_or_buffers_changed++; | |
2051 | new = make_window (); | |
2052 | p = XWINDOW (new); | |
2053 | ||
44fa5b1e | 2054 | p->frame = o->frame; |
7ab12479 | 2055 | p->next = o->next; |
265a9e55 | 2056 | if (!NILP (p->next)) |
7ab12479 JB |
2057 | XWINDOW (p->next)->prev = new; |
2058 | p->prev = window; | |
2059 | o->next = new; | |
2060 | p->parent = o->parent; | |
2061 | p->buffer = Qt; | |
2062 | ||
2063 | Fset_window_buffer (new, o->buffer); | |
2064 | ||
44fa5b1e | 2065 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 2066 | |
265a9e55 | 2067 | if (!NILP (horflag)) |
7ab12479 JB |
2068 | { |
2069 | p->height = o->height; | |
2070 | p->top = o->top; | |
2071 | XFASTINT (p->width) = XFASTINT (o->width) - size; | |
2072 | XFASTINT (o->width) = size; | |
2073 | XFASTINT (p->left) = XFASTINT (o->left) + size; | |
2074 | } | |
2075 | else | |
2076 | { | |
2077 | p->left = o->left; | |
2078 | p->width = o->width; | |
2079 | XFASTINT (p->height) = XFASTINT (o->height) - size; | |
2080 | XFASTINT (o->height) = size; | |
2081 | XFASTINT (p->top) = XFASTINT (o->top) + size; | |
2082 | } | |
2083 | ||
2084 | return new; | |
2085 | } | |
2086 | \f | |
2087 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", | |
2088 | "Make current window ARG lines bigger.\n\ | |
2089 | From program, optional second arg non-nil means grow sideways ARG columns.") | |
2090 | (n, side) | |
2091 | register Lisp_Object n, side; | |
2092 | { | |
2093 | CHECK_NUMBER (n, 0); | |
265a9e55 | 2094 | change_window_height (XINT (n), !NILP (side)); |
7ab12479 JB |
2095 | return Qnil; |
2096 | } | |
2097 | ||
2098 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", | |
2099 | "Make current window ARG lines smaller.\n\ | |
2100 | From program, optional second arg non-nil means shrink sideways ARG columns.") | |
2101 | (n, side) | |
2102 | register Lisp_Object n, side; | |
2103 | { | |
2104 | CHECK_NUMBER (n, 0); | |
265a9e55 | 2105 | change_window_height (-XINT (n), !NILP (side)); |
7ab12479 JB |
2106 | return Qnil; |
2107 | } | |
2108 | ||
2109 | int | |
2110 | window_height (window) | |
2111 | Lisp_Object window; | |
2112 | { | |
2113 | register struct window *p = XWINDOW (window); | |
2114 | return XFASTINT (p->height); | |
2115 | } | |
2116 | ||
2117 | int | |
2118 | window_width (window) | |
2119 | Lisp_Object window; | |
2120 | { | |
2121 | register struct window *p = XWINDOW (window); | |
2122 | return XFASTINT (p->width); | |
2123 | } | |
2124 | ||
05c2896a JB |
2125 | #define MINSIZE(w) \ |
2126 | (widthflag \ | |
2127 | ? window_min_width \ | |
2128 | : (MINI_WINDOW_P (XWINDOW (w)) ? 1 : window_min_height)) | |
7ab12479 JB |
2129 | |
2130 | #define CURBEG(w) \ | |
05c2896a | 2131 | *(widthflag ? (int *) &(XWINDOW (w)->left) : (int *) &(XWINDOW (w)->top)) |
7ab12479 JB |
2132 | |
2133 | #define CURSIZE(w) \ | |
05c2896a | 2134 | *(widthflag ? (int *) &(XWINDOW (w)->width) : (int *) &(XWINDOW (w)->height)) |
7ab12479 JB |
2135 | |
2136 | /* Unlike set_window_height, this function | |
2137 | also changes the heights of the siblings so as to | |
2138 | keep everything consistent. */ | |
2139 | ||
2140 | change_window_height (delta, widthflag) | |
2141 | register int delta; | |
2142 | int widthflag; | |
2143 | { | |
2144 | register Lisp_Object parent; | |
2145 | Lisp_Object window; | |
2146 | register struct window *p; | |
2147 | int *sizep; | |
2148 | int (*sizefun) () = widthflag ? window_width : window_height; | |
2149 | register int (*setsizefun) () = (widthflag | |
2150 | ? set_window_width | |
2151 | : set_window_height); | |
2152 | ||
a481b3ea | 2153 | check_min_window_sizes (); |
7ab12479 JB |
2154 | |
2155 | window = selected_window; | |
2156 | while (1) | |
2157 | { | |
2158 | p = XWINDOW (window); | |
2159 | parent = p->parent; | |
265a9e55 | 2160 | if (NILP (parent)) |
7ab12479 JB |
2161 | { |
2162 | if (widthflag) | |
2163 | error ("No other window to side of this one"); | |
2164 | break; | |
2165 | } | |
265a9e55 JB |
2166 | if (widthflag ? !NILP (XWINDOW (parent)->hchild) |
2167 | : !NILP (XWINDOW (parent)->vchild)) | |
7ab12479 JB |
2168 | break; |
2169 | window = parent; | |
2170 | } | |
2171 | ||
05c2896a | 2172 | sizep = &CURSIZE (window); |
7ab12479 | 2173 | |
7ab12479 JB |
2174 | { |
2175 | register int maxdelta; | |
7ab12479 | 2176 | |
265a9e55 JB |
2177 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - *sizep |
2178 | : !NILP (p->next) ? (*sizefun) (p->next) - MINSIZE (p->next) | |
2179 | : !NILP (p->prev) ? (*sizefun) (p->prev) - MINSIZE (p->prev) | |
44fa5b1e JB |
2180 | /* This is a frame with only one window, a minibuffer-only |
2181 | or a minibufferless frame. */ | |
d5783c40 | 2182 | : (delta = 0)); |
7ab12479 JB |
2183 | |
2184 | if (delta > maxdelta) | |
2185 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
2186 | the full frame, or make the only window aside from the |
2187 | minibuffer the full frame. */ | |
7ab12479 | 2188 | delta = maxdelta; |
6b54027b | 2189 | } |
d5783c40 | 2190 | |
6b54027b RS |
2191 | if (*sizep + delta < MINSIZE (window)) |
2192 | { | |
2193 | Fdelete_window (window); | |
d5783c40 | 2194 | return; |
6b54027b RS |
2195 | } |
2196 | ||
2197 | if (delta == 0) | |
2198 | return; | |
7ab12479 | 2199 | |
6b54027b RS |
2200 | if (!NILP (p->next) |
2201 | && (*sizefun) (p->next) - delta >= MINSIZE (p->next)) | |
7ab12479 JB |
2202 | { |
2203 | (*setsizefun) (p->next, (*sizefun) (p->next) - delta, 0); | |
2204 | (*setsizefun) (window, *sizep + delta, 0); | |
05c2896a | 2205 | CURBEG (p->next) += delta; |
7ab12479 JB |
2206 | /* This does not change size of p->next, |
2207 | but it propagates the new top edge to its children */ | |
2208 | (*setsizefun) (p->next, (*sizefun) (p->next), 0); | |
2209 | } | |
6b54027b RS |
2210 | else if (!NILP (p->prev) |
2211 | && (*sizefun) (p->prev) - delta >= MINSIZE (p->prev)) | |
7ab12479 JB |
2212 | { |
2213 | (*setsizefun) (p->prev, (*sizefun) (p->prev) - delta, 0); | |
05c2896a | 2214 | CURBEG (window) -= delta; |
7ab12479 JB |
2215 | (*setsizefun) (window, *sizep + delta, 0); |
2216 | } | |
2217 | else | |
2218 | { | |
2219 | register int delta1; | |
2220 | register int opht = (*sizefun) (parent); | |
2221 | ||
2222 | /* If trying to grow this window to or beyond size of the parent, | |
2223 | make delta1 so big that, on shrinking back down, | |
2224 | all the siblings end up with less than one line and are deleted. */ | |
2225 | if (opht <= *sizep + delta) | |
2226 | delta1 = opht * opht * 2; | |
2227 | /* Otherwise, make delta1 just right so that if we add delta1 | |
2228 | lines to this window and to the parent, and then shrink | |
2229 | the parent back to its original size, the new proportional | |
2230 | size of this window will increase by delta. */ | |
2231 | else | |
2232 | delta1 = (delta * opht * 100) / ((opht - *sizep - delta) * 100); | |
2233 | ||
2234 | /* Add delta1 lines or columns to this window, and to the parent, | |
2235 | keeping things consistent while not affecting siblings. */ | |
05c2896a | 2236 | CURSIZE (parent) = opht + delta1; |
7ab12479 JB |
2237 | (*setsizefun) (window, *sizep + delta1, 0); |
2238 | ||
2239 | /* Squeeze out delta1 lines or columns from our parent, | |
2240 | shriking this window and siblings proportionately. | |
2241 | This brings parent back to correct size. | |
2242 | Delta1 was calculated so this makes this window the desired size, | |
2243 | taking it all out of the siblings. */ | |
2244 | (*setsizefun) (parent, opht, 0); | |
2245 | } | |
2246 | ||
2247 | XFASTINT (p->last_modified) = 0; | |
2248 | } | |
2249 | #undef MINSIZE | |
2250 | #undef CURBEG | |
2251 | #undef CURSIZE | |
2252 | ||
2253 | \f | |
2254 | /* Return number of lines of text (not counting mode line) in W. */ | |
2255 | ||
2256 | int | |
2257 | window_internal_height (w) | |
2258 | struct window *w; | |
2259 | { | |
2260 | int ht = XFASTINT (w->height); | |
2261 | ||
2262 | if (MINI_WINDOW_P (w)) | |
2263 | return ht; | |
2264 | ||
265a9e55 JB |
2265 | if (!NILP (w->parent) || !NILP (w->vchild) || !NILP (w->hchild) |
2266 | || !NILP (w->next) || !NILP (w->prev) | |
44fa5b1e | 2267 | || FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME (w)))) |
7ab12479 JB |
2268 | return ht - 1; |
2269 | ||
2270 | return ht; | |
2271 | } | |
2272 | ||
535e0b8e JB |
2273 | |
2274 | /* Return the number of columns in W. | |
a3c87d4e | 2275 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e JB |
2276 | separating W from the sibling to its right. */ |
2277 | int | |
2278 | window_internal_width (w) | |
2279 | struct window *w; | |
2280 | { | |
2281 | FRAME_PTR f = XFRAME (WINDOW_FRAME (w)); | |
2282 | int left = XINT (w->left); | |
2283 | int width = XINT (w->width); | |
2284 | ||
2285 | /* If this window is flush against the right edge of the frame, its | |
2286 | internal width is its full width. */ | |
2287 | if (left + width >= FRAME_WIDTH (f)) | |
2288 | return width; | |
2289 | ||
2290 | /* If we are not flush right, then our rightmost columns are | |
2291 | occupied by some sort of separator. */ | |
2292 | ||
a3c87d4e JB |
2293 | /* Scroll bars occupy a few columns. */ |
2294 | if (FRAME_HAS_VERTICAL_SCROLL_BARS (f)) | |
2295 | return width - VERTICAL_SCROLL_BAR_WIDTH; | |
535e0b8e JB |
2296 | |
2297 | /* The column of `|' characters separating side-by-side windows | |
2298 | occupies one column only. */ | |
2299 | return width - 1; | |
2300 | } | |
2301 | ||
2302 | ||
7ab12479 JB |
2303 | /* Scroll contents of window WINDOW up N lines. */ |
2304 | ||
2305 | void | |
f8026fd8 | 2306 | window_scroll (window, n, noerror) |
7ab12479 JB |
2307 | Lisp_Object window; |
2308 | int n; | |
f8026fd8 | 2309 | int noerror; |
7ab12479 JB |
2310 | { |
2311 | register struct window *w = XWINDOW (window); | |
5ce7b543 | 2312 | register int opoint = PT; |
7ab12479 JB |
2313 | register int pos; |
2314 | register int ht = window_internal_height (w); | |
2315 | register Lisp_Object tem; | |
2316 | int lose; | |
2317 | Lisp_Object bolp, nmoved; | |
2318 | ||
5ce7b543 | 2319 | XFASTINT (tem) = PT; |
7ab12479 JB |
2320 | tem = Fpos_visible_in_window_p (tem, window); |
2321 | ||
265a9e55 | 2322 | if (NILP (tem)) |
7ab12479 | 2323 | { |
cd2be1dd | 2324 | Fvertical_motion (make_number (- (ht / 2)), window); |
5ce7b543 | 2325 | XFASTINT (tem) = PT; |
7ab12479 JB |
2326 | Fset_marker (w->start, tem, w->buffer); |
2327 | w->force_start = Qt; | |
2328 | } | |
2329 | ||
2330 | SET_PT (marker_position (w->start)); | |
5ce7b543 | 2331 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 2332 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 2333 | pos = PT; |
7ab12479 JB |
2334 | bolp = Fbolp (); |
2335 | SET_PT (opoint); | |
2336 | ||
2337 | if (lose) | |
f8026fd8 JB |
2338 | { |
2339 | if (noerror) | |
2340 | return; | |
2341 | else | |
2342 | Fsignal (Qbeginning_of_buffer, Qnil); | |
2343 | } | |
7ab12479 JB |
2344 | |
2345 | if (pos < ZV) | |
7ab12479 JB |
2346 | { |
2347 | set_marker_restricted (w->start, make_number (pos), w->buffer); | |
2348 | w->start_at_line_beg = bolp; | |
2349 | w->update_mode_line = Qt; | |
2350 | XFASTINT (w->last_modified) = 0; | |
2351 | if (pos > opoint) | |
2352 | SET_PT (pos); | |
2353 | if (n < 0) | |
2354 | { | |
2355 | SET_PT (pos); | |
540b6aa0 | 2356 | tem = Fvertical_motion (make_number (ht), window); |
5ce7b543 | 2357 | if (PT > opoint || XFASTINT (tem) < ht) |
7ab12479 JB |
2358 | SET_PT (opoint); |
2359 | else | |
540b6aa0 | 2360 | Fvertical_motion (make_number (-1), window); |
7ab12479 JB |
2361 | } |
2362 | } | |
2363 | else | |
f8026fd8 JB |
2364 | { |
2365 | if (noerror) | |
2366 | return; | |
2367 | else | |
2368 | Fsignal (Qend_of_buffer, Qnil); | |
2369 | } | |
7ab12479 JB |
2370 | } |
2371 | \f | |
2372 | /* This is the guts of Fscroll_up and Fscroll_down. */ | |
2373 | ||
2374 | static void | |
2375 | scroll_command (n, direction) | |
2376 | register Lisp_Object n; | |
2377 | int direction; | |
2378 | { | |
2379 | register int defalt; | |
2380 | int count = specpdl_ptr - specpdl; | |
2381 | ||
95605e15 JB |
2382 | /* If selected window's buffer isn't current, make it current for the moment. |
2383 | But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 2384 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
2385 | { |
2386 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
2387 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
2388 | } | |
7ab12479 JB |
2389 | |
2390 | defalt = (window_internal_height (XWINDOW (selected_window)) | |
2391 | - next_screen_context_lines); | |
2392 | defalt = direction * (defalt < 1 ? 1 : defalt); | |
2393 | ||
265a9e55 | 2394 | if (NILP (n)) |
f8026fd8 | 2395 | window_scroll (selected_window, defalt, 0); |
7ab12479 | 2396 | else if (EQ (n, Qminus)) |
f8026fd8 | 2397 | window_scroll (selected_window, - defalt, 0); |
7ab12479 JB |
2398 | else |
2399 | { | |
2400 | n = Fprefix_numeric_value (n); | |
f8026fd8 | 2401 | window_scroll (selected_window, XINT (n) * direction, 0); |
7ab12479 | 2402 | } |
95605e15 JB |
2403 | |
2404 | unbind_to (count, Qnil); | |
7ab12479 JB |
2405 | } |
2406 | ||
2407 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
2408 | "Scroll text of current window upward ARG lines; or near full screen if no ARG.\n\ | |
2409 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
279e0e0c | 2410 | Negative ARG means scroll downward.\n\ |
7ab12479 JB |
2411 | When calling from a program, supply a number as argument or nil.") |
2412 | (n) | |
2413 | Lisp_Object n; | |
2414 | { | |
2415 | scroll_command (n, 1); | |
2416 | return Qnil; | |
2417 | } | |
2418 | ||
2419 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
2420 | "Scroll text of current window downward ARG lines; or near full screen if no ARG.\n\ | |
2421 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
279e0e0c | 2422 | Negative ARG means scroll upward.\n\ |
7ab12479 JB |
2423 | When calling from a program, supply a number as argument or nil.") |
2424 | (n) | |
2425 | Lisp_Object n; | |
2426 | { | |
2427 | scroll_command (n, -1); | |
2428 | return Qnil; | |
2429 | } | |
ccd0664b RS |
2430 | \f |
2431 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
2432 | "Return the other window for \"other window scroll\" commands.\n\ | |
77b24de6 | 2433 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ |
ccd0664b RS |
2434 | specifies the window.\n\ |
2435 | If `other-window-scroll-buffer' is non-nil, a window\n\ | |
2436 | showing that buffer is used.") | |
eb16ec06 | 2437 | () |
7ab12479 | 2438 | { |
ccd0664b | 2439 | Lisp_Object window; |
7ab12479 JB |
2440 | |
2441 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 2442 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
2443 | window = Vminibuf_scroll_window; |
2444 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 2445 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
2446 | { |
2447 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 2448 | if (NILP (window)) |
7ab12479 JB |
2449 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt); |
2450 | } | |
2451 | else | |
dbc4e1c1 JB |
2452 | { |
2453 | /* Nothing specified; look for a neighboring window on the same | |
2454 | frame. */ | |
2455 | window = Fnext_window (selected_window, Qnil, Qnil); | |
2456 | ||
2457 | if (EQ (window, selected_window)) | |
2458 | /* That didn't get us anywhere; look for a window on another | |
2459 | visible frame. */ | |
2460 | do | |
2461 | window = Fnext_window (window, Qnil, Qt); | |
2462 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
2463 | && ! EQ (window, selected_window)); | |
2464 | } | |
2465 | ||
605be8af | 2466 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
2467 | |
2468 | if (EQ (window, selected_window)) | |
2469 | error ("There is no other window"); | |
2470 | ||
ccd0664b RS |
2471 | return window; |
2472 | } | |
2473 | ||
2474 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
2475 | "Scroll next window upward ARG lines; or near full screen if no ARG.\n\ | |
2476 | The next window is the one below the current one; or the one at the top\n\ | |
2477 | if the current one is at the bottom. Negative ARG means scroll downward.\n\ | |
2478 | When calling from a program, supply a number as argument or nil.\n\ | |
2479 | \n\ | |
2480 | If in the minibuffer, `minibuffer-scroll-window' if non-nil\n\ | |
2481 | specifies the window to scroll.\n\ | |
2482 | If `other-window-scroll-buffer' is non-nil, scroll the window\n\ | |
2483 | showing that buffer, popping the buffer up if necessary.") | |
2484 | (n) | |
2485 | register Lisp_Object n; | |
2486 | { | |
2487 | register Lisp_Object window; | |
2488 | register int ht; | |
2489 | register struct window *w; | |
2490 | register int count = specpdl_ptr - specpdl; | |
2491 | ||
2492 | window = Fother_window_for_scrolling (); | |
2493 | ||
7ab12479 JB |
2494 | w = XWINDOW (window); |
2495 | ht = window_internal_height (w); | |
2496 | ||
2497 | /* Don't screw up if window_scroll gets an error. */ | |
2498 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
2499 | ||
2500 | Fset_buffer (w->buffer); | |
2501 | SET_PT (marker_position (w->pointm)); | |
2502 | ||
265a9e55 | 2503 | if (NILP (n)) |
f8026fd8 | 2504 | window_scroll (window, ht - next_screen_context_lines, 1); |
7ab12479 | 2505 | else if (EQ (n, Qminus)) |
f8026fd8 | 2506 | window_scroll (window, next_screen_context_lines - ht, 1); |
7ab12479 JB |
2507 | else |
2508 | { | |
2509 | if (XTYPE (n) == Lisp_Cons) | |
2510 | n = Fcar (n); | |
2511 | CHECK_NUMBER (n, 0); | |
f8026fd8 | 2512 | window_scroll (window, XINT (n), 1); |
7ab12479 JB |
2513 | } |
2514 | ||
5ce7b543 | 2515 | Fset_marker (w->pointm, make_number (PT), Qnil); |
f4e7b2c2 | 2516 | unbind_to (count, Qnil); |
7ab12479 JB |
2517 | |
2518 | return Qnil; | |
2519 | } | |
2520 | \f | |
644b477c | 2521 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 1, "P", |
7ab12479 JB |
2522 | "Scroll selected window display ARG columns left.\n\ |
2523 | Default for ARG is window width minus 2.") | |
2524 | (arg) | |
2525 | register Lisp_Object arg; | |
2526 | { | |
2527 | ||
265a9e55 | 2528 | if (NILP (arg)) |
b8baad40 | 2529 | XFASTINT (arg) = window_internal_width (XWINDOW (selected_window)) - 2; |
7ab12479 JB |
2530 | else |
2531 | arg = Fprefix_numeric_value (arg); | |
2532 | ||
2533 | return | |
2534 | Fset_window_hscroll (selected_window, | |
2535 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
2536 | + XINT (arg))); | |
2537 | } | |
2538 | ||
644b477c | 2539 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 1, "P", |
7ab12479 JB |
2540 | "Scroll selected window display ARG columns right.\n\ |
2541 | Default for ARG is window width minus 2.") | |
2542 | (arg) | |
2543 | register Lisp_Object arg; | |
2544 | { | |
265a9e55 | 2545 | if (NILP (arg)) |
b8baad40 | 2546 | XFASTINT (arg) = window_internal_width (XWINDOW (selected_window)) - 2; |
7ab12479 JB |
2547 | else |
2548 | arg = Fprefix_numeric_value (arg); | |
2549 | ||
2550 | return | |
2551 | Fset_window_hscroll (selected_window, | |
2552 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
2553 | - XINT (arg))); | |
2554 | } | |
2555 | ||
2556 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", | |
44fa5b1e | 2557 | "Center point in window and redisplay frame. With ARG, put point on line ARG.\n\ |
7ab12479 | 2558 | The desired position of point is always relative to the current window.\n\ |
44fa5b1e JB |
2559 | Just C-u as prefix means put point in the center of the window.\n\ |
2560 | No arg (i.e., it is nil) erases the entire frame and then\n\ | |
2561 | redraws with point in the center of the current window.") | |
7ab12479 JB |
2562 | (n) |
2563 | register Lisp_Object n; | |
2564 | { | |
2565 | register struct window *w = XWINDOW (selected_window); | |
2566 | register int ht = window_internal_height (w); | |
5ce7b543 | 2567 | register int opoint = PT; |
540b6aa0 | 2568 | Lisp_Object window; |
7ab12479 | 2569 | |
265a9e55 | 2570 | if (NILP (n)) |
7ab12479 | 2571 | { |
44fa5b1e | 2572 | extern int frame_garbaged; |
7ab12479 | 2573 | |
44fa5b1e | 2574 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
7ab12479 JB |
2575 | XFASTINT (n) = ht / 2; |
2576 | } | |
2577 | else if (XTYPE (n) == Lisp_Cons) /* Just C-u. */ | |
2578 | { | |
2579 | XFASTINT (n) = ht / 2; | |
2580 | } | |
2581 | else | |
2582 | { | |
2583 | n = Fprefix_numeric_value (n); | |
2584 | CHECK_NUMBER (n, 0); | |
2585 | } | |
2586 | ||
2587 | if (XINT (n) < 0) | |
2588 | XSETINT (n, XINT (n) + ht); | |
2589 | ||
2590 | XSETINT (n, - XINT (n)); | |
2591 | ||
540b6aa0 RS |
2592 | XSET (window, Lisp_Window, w); |
2593 | Fvertical_motion (n, window); | |
5ce7b543 | 2594 | Fset_marker (w->start, make_number (PT), w->buffer); |
7ab12479 JB |
2595 | w->start_at_line_beg = Fbolp (); |
2596 | ||
2597 | SET_PT (opoint); | |
2598 | w->force_start = Qt; | |
2599 | ||
2600 | return Qnil; | |
2601 | } | |
2602 | \f | |
2603 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
2604 | 1, 1, "P", | |
2605 | "Position point relative to window.\n\ | |
2606 | With no argument, position text at center of window.\n\ | |
44fa5b1e | 2607 | An argument specifies frame line; zero means top of window,\n\ |
7ab12479 JB |
2608 | negative means relative to bottom of window.") |
2609 | (arg) | |
2610 | register Lisp_Object arg; | |
2611 | { | |
2612 | register struct window *w = XWINDOW (selected_window); | |
2613 | register int height = window_internal_height (w); | |
2614 | register int start; | |
540b6aa0 | 2615 | Lisp_Object window; |
7ab12479 | 2616 | |
265a9e55 | 2617 | if (NILP (arg)) |
7ab12479 JB |
2618 | XFASTINT (arg) = height / 2; |
2619 | else | |
2620 | { | |
2621 | arg = Fprefix_numeric_value (arg); | |
2622 | if (XINT (arg) < 0) | |
2623 | XSETINT (arg, XINT (arg) + height); | |
2624 | } | |
2625 | ||
2626 | start = marker_position (w->start); | |
540b6aa0 | 2627 | XSET (window, Lisp_Window, w); |
7ab12479 JB |
2628 | if (start < BEGV || start > ZV) |
2629 | { | |
cd2be1dd | 2630 | Fvertical_motion (make_number (- (height / 2)), window); |
5ce7b543 | 2631 | Fset_marker (w->start, make_number (PT), w->buffer); |
7ab12479 JB |
2632 | w->start_at_line_beg = Fbolp (); |
2633 | w->force_start = Qt; | |
2634 | } | |
2635 | else | |
2636 | SET_PT (start); | |
2637 | ||
540b6aa0 | 2638 | return Fvertical_motion (arg, window); |
7ab12479 JB |
2639 | } |
2640 | \f | |
2641 | struct save_window_data | |
2642 | { | |
2643 | int size_from_Lisp_Vector_struct; | |
2644 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
8f6ea2e9 | 2645 | Lisp_Object frame_width, frame_height, frame_menu_bar_lines; |
bdc727bf | 2646 | Lisp_Object selected_frame; |
7ab12479 JB |
2647 | Lisp_Object current_window; |
2648 | Lisp_Object current_buffer; | |
2649 | Lisp_Object minibuf_scroll_window; | |
2650 | Lisp_Object root_window; | |
bdc727bf | 2651 | Lisp_Object focus_frame; |
7ab12479 JB |
2652 | /* A vector, interpreted as a struct saved_window */ |
2653 | Lisp_Object saved_windows; | |
2654 | }; | |
ff06df24 JB |
2655 | |
2656 | /* Arg to Fmake_vector */ | |
2657 | #define SAVE_WINDOW_DATA_SIZE \ | |
2658 | ((sizeof (struct save_window_data) \ | |
2659 | - (sizeof (struct Lisp_Vector) \ | |
2660 | /* Don't count the contents member of the struct Lisp_Vector */ \ | |
2661 | - sizeof (Lisp_Object))) \ | |
2662 | / sizeof (Lisp_Object)) | |
7ab12479 JB |
2663 | |
2664 | /* This is saved as a Lisp_Vector */ | |
2665 | struct saved_window | |
2666 | { | |
2667 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
2668 | int size_from_Lisp_Vector_struct; | |
2669 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
2670 | ||
2671 | Lisp_Object window; | |
2672 | Lisp_Object buffer, start, pointm, mark; | |
2673 | Lisp_Object left, top, width, height, hscroll; | |
2674 | Lisp_Object parent, prev; | |
2675 | Lisp_Object start_at_line_beg; | |
2676 | Lisp_Object display_table; | |
2677 | }; | |
2678 | #define SAVED_WINDOW_VECTOR_SIZE 14 /* Arg to Fmake_vector */ | |
2679 | ||
2680 | #define SAVED_WINDOW_N(swv,n) \ | |
2681 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
2682 | ||
2683 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
2684 | "T if OBJECT is a window-configration object.") | |
2685 | (obj) | |
2686 | Lisp_Object obj; | |
2687 | { | |
2688 | if (XTYPE (obj) == Lisp_Window_Configuration) | |
2689 | return Qt; | |
2690 | return Qnil; | |
2691 | } | |
2692 | ||
2693 | ||
d5b2799e RS |
2694 | DEFUN ("set-window-configuration", Fset_window_configuration, |
2695 | Sset_window_configuration, 1, 1, 0, | |
7ab12479 JB |
2696 | "Set the configuration of windows and buffers as specified by CONFIGURATION.\n\ |
2697 | CONFIGURATION must be a value previously returned\n\ | |
2698 | by `current-window-configuration' (which see).") | |
2f83aebe JB |
2699 | (configuration) |
2700 | Lisp_Object configuration; | |
7ab12479 | 2701 | { |
7ab12479 JB |
2702 | register struct save_window_data *data; |
2703 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 2704 | Lisp_Object new_current_buffer; |
fd482be5 | 2705 | Lisp_Object frame; |
44fa5b1e | 2706 | FRAME_PTR f; |
7ab12479 | 2707 | |
2f83aebe | 2708 | while (XTYPE (configuration) != Lisp_Window_Configuration) |
7ab12479 | 2709 | { |
2f83aebe JB |
2710 | configuration = wrong_type_argument (intern ("window-configuration-p"), |
2711 | configuration); | |
7ab12479 JB |
2712 | } |
2713 | ||
2f83aebe | 2714 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
2715 | saved_windows = XVECTOR (data->saved_windows); |
2716 | ||
7ab12479 | 2717 | new_current_buffer = data->current_buffer; |
265a9e55 | 2718 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 JB |
2719 | new_current_buffer = Qnil; |
2720 | ||
fd482be5 JB |
2721 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
2722 | f = XFRAME (frame); | |
9ace597f | 2723 | |
fd482be5 JB |
2724 | /* If f is a dead frame, don't bother rebuilding its window tree. |
2725 | However, there is other stuff we should still try to do below. */ | |
2726 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 2727 | { |
fd482be5 JB |
2728 | register struct window *w; |
2729 | register struct saved_window *p; | |
2730 | int k; | |
2731 | ||
2732 | /* If the frame has been resized since this window configuration was | |
2733 | made, we change the frame to the size specified in the | |
2734 | configuration, restore the configuration, and then resize it | |
2735 | back. We keep track of the prevailing height in these variables. */ | |
2736 | int previous_frame_height = FRAME_HEIGHT (f); | |
2737 | int previous_frame_width = FRAME_WIDTH (f); | |
8f6ea2e9 | 2738 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
fd482be5 JB |
2739 | |
2740 | if (XFASTINT (data->frame_height) != previous_frame_height | |
2741 | || XFASTINT (data->frame_width) != previous_frame_width) | |
2742 | change_frame_size (f, data->frame_height, data->frame_width, 0, 0); | |
217f2871 | 2743 | #ifdef HAVE_X_WINDOWS |
8f6ea2e9 KH |
2744 | if (XFASTINT (data->frame_menu_bar_lines) |
2745 | != previous_frame_menu_bar_lines) | |
2746 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, 0); | |
217f2871 | 2747 | #endif |
fd482be5 JB |
2748 | |
2749 | windows_or_buffers_changed++; | |
2750 | ||
2751 | /* Kludge Alert! | |
2752 | Mark all windows now on frame as "deleted". | |
2753 | Restoring the new configuration "undeletes" any that are in it. | |
2754 | ||
2755 | Save their current buffers in their height fields, since we may | |
2756 | need it later, if a buffer saved in the configuration is now | |
2757 | dead. */ | |
2758 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
2759 | ||
2760 | for (k = 0; k < saved_windows->size; k++) | |
2761 | { | |
2762 | p = SAVED_WINDOW_N (saved_windows, k); | |
2763 | w = XWINDOW (p->window); | |
2764 | w->next = Qnil; | |
7ab12479 | 2765 | |
fd482be5 JB |
2766 | if (!NILP (p->parent)) |
2767 | w->parent = SAVED_WINDOW_N (saved_windows, | |
2768 | XFASTINT (p->parent))->window; | |
2769 | else | |
2770 | w->parent = Qnil; | |
7ab12479 | 2771 | |
fd482be5 | 2772 | if (!NILP (p->prev)) |
7ab12479 | 2773 | { |
fd482be5 JB |
2774 | w->prev = SAVED_WINDOW_N (saved_windows, |
2775 | XFASTINT (p->prev))->window; | |
2776 | XWINDOW (w->prev)->next = p->window; | |
2777 | } | |
2778 | else | |
2779 | { | |
2780 | w->prev = Qnil; | |
2781 | if (!NILP (w->parent)) | |
2782 | { | |
2783 | if (EQ (p->width, XWINDOW (w->parent)->width)) | |
2784 | { | |
2785 | XWINDOW (w->parent)->vchild = p->window; | |
2786 | XWINDOW (w->parent)->hchild = Qnil; | |
2787 | } | |
2788 | else | |
2789 | { | |
2790 | XWINDOW (w->parent)->hchild = p->window; | |
2791 | XWINDOW (w->parent)->vchild = Qnil; | |
2792 | } | |
2793 | } | |
2794 | } | |
2795 | ||
2796 | /* If we squirreled away the buffer in the window's height, | |
2797 | restore it now. */ | |
2798 | if (XTYPE (w->height) == Lisp_Buffer) | |
2799 | w->buffer = w->height; | |
2800 | w->left = p->left; | |
2801 | w->top = p->top; | |
2802 | w->width = p->width; | |
2803 | w->height = p->height; | |
2804 | w->hscroll = p->hscroll; | |
2805 | w->display_table = p->display_table; | |
2806 | XFASTINT (w->last_modified) = 0; | |
2807 | ||
2808 | /* Reinstall the saved buffer and pointers into it. */ | |
2809 | if (NILP (p->buffer)) | |
2810 | w->buffer = p->buffer; | |
2811 | else | |
2812 | { | |
2813 | if (!NILP (XBUFFER (p->buffer)->name)) | |
2814 | /* If saved buffer is alive, install it. */ | |
2815 | { | |
2816 | w->buffer = p->buffer; | |
2817 | w->start_at_line_beg = p->start_at_line_beg; | |
2818 | set_marker_restricted (w->start, | |
2819 | Fmarker_position (p->start), | |
2820 | w->buffer); | |
2821 | set_marker_restricted (w->pointm, | |
2822 | Fmarker_position (p->pointm), | |
2823 | w->buffer); | |
2824 | Fset_marker (XBUFFER (w->buffer)->mark, | |
2825 | Fmarker_position (p->mark), w->buffer); | |
2826 | ||
2827 | /* As documented in Fcurrent_window_configuration, don't | |
2828 | save the location of point in the buffer which was current | |
2829 | when the window configuration was recorded. */ | |
6b54027b RS |
2830 | if (!EQ (p->buffer, new_current_buffer) |
2831 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
2832 | Fgoto_char (w->pointm); |
2833 | } | |
52a68e98 RS |
2834 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
2835 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 2836 | { |
fd482be5 JB |
2837 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
2838 | /* This will set the markers to beginning of visible | |
2839 | range. */ | |
2840 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
2841 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
2842 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
2843 | } |
2844 | else | |
fd482be5 | 2845 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 2846 | are real. */ |
7ab12479 | 2847 | { |
fd482be5 JB |
2848 | /* Set window markers at start of visible range. */ |
2849 | if (XMARKER (w->start)->buffer == 0) | |
2850 | set_marker_restricted (w->start, make_number (0), | |
2851 | w->buffer); | |
2852 | if (XMARKER (w->pointm)->buffer == 0) | |
2853 | set_marker_restricted (w->pointm, | |
2854 | (make_number | |
2855 | (BUF_PT (XBUFFER (w->buffer)))), | |
2856 | w->buffer); | |
2857 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
2858 | } |
2859 | } | |
2860 | } | |
9ace597f | 2861 | |
fd482be5 JB |
2862 | FRAME_ROOT_WINDOW (f) = data->root_window; |
2863 | Fselect_window (data->current_window); | |
7ab12479 | 2864 | |
fd482be5 | 2865 | #ifdef MULTI_FRAME |
db269683 JB |
2866 | if (NILP (data->focus_frame) |
2867 | || (XTYPE (data->focus_frame) == Lisp_Frame | |
2868 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) | |
2869 | Fredirect_frame_focus (frame, data->focus_frame); | |
fd482be5 | 2870 | #endif |
7ab12479 | 2871 | |
fd482be5 JB |
2872 | #if 0 /* I don't understand why this is needed, and it causes problems |
2873 | when the frame's old selected window has been deleted. */ | |
2874 | #ifdef MULTI_FRAME | |
2875 | if (f != selected_frame && ! FRAME_TERMCAP_P (f)) | |
d5b2799e | 2876 | Fhandle_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), Qnil); |
fd482be5 JB |
2877 | #endif |
2878 | #endif | |
2879 | ||
2880 | /* Set the screen height to the value it had before this function. */ | |
2881 | if (previous_frame_height != FRAME_HEIGHT (f) | |
2882 | || previous_frame_width != FRAME_WIDTH (f)) | |
2883 | change_frame_size (f, previous_frame_height, previous_frame_width, | |
2884 | 0, 0); | |
217f2871 | 2885 | #ifdef HAVE_X_WINDOWS |
8f6ea2e9 KH |
2886 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
2887 | x_set_menu_bar_lines (f, previous_frame_menu_bar_lines, 0); | |
217f2871 | 2888 | #endif |
fd482be5 | 2889 | } |
bdc727bf | 2890 | |
ad854249 | 2891 | #ifdef MULTI_FRAME |
bdc727bf | 2892 | /* Fselect_window will have made f the selected frame, so we |
d5b2799e | 2893 | reselect the proper frame here. Fhandle_switch_frame will change the |
bdc727bf JB |
2894 | selected window too, but that doesn't make the call to |
2895 | Fselect_window above totally superfluous; it still sets f's | |
2896 | selected window. */ | |
fd482be5 | 2897 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) |
d5b2799e | 2898 | Fhandle_switch_frame (data->selected_frame, Qnil); |
ad854249 | 2899 | #endif |
bdc727bf JB |
2900 | |
2901 | if (!NILP (new_current_buffer)) | |
2902 | Fset_buffer (new_current_buffer); | |
2903 | ||
7ab12479 JB |
2904 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
2905 | return (Qnil); | |
2906 | } | |
2907 | ||
44fa5b1e | 2908 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
2909 | by setting their buffers to nil. */ |
2910 | ||
fd482be5 | 2911 | void |
7ab12479 JB |
2912 | delete_all_subwindows (w) |
2913 | register struct window *w; | |
2914 | { | |
265a9e55 | 2915 | if (!NILP (w->next)) |
7ab12479 | 2916 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 2917 | if (!NILP (w->vchild)) |
7ab12479 | 2918 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 2919 | if (!NILP (w->hchild)) |
7ab12479 | 2920 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af JB |
2921 | |
2922 | w->height = w->buffer; /* See Fset_window_configuration for excuse. */ | |
2923 | ||
2924 | /* We set all three of these fields to nil, to make sure that we can | |
2925 | distinguish this dead window from any live window. Live leaf | |
2926 | windows will have buffer set, and combination windows will have | |
2927 | vchild or hchild set. */ | |
2928 | w->buffer = Qnil; | |
2929 | w->vchild = Qnil; | |
2930 | w->hchild = Qnil; | |
7ab12479 JB |
2931 | } |
2932 | \f | |
2933 | static int | |
2934 | count_windows (window) | |
2935 | register struct window *window; | |
2936 | { | |
2937 | register int count = 1; | |
265a9e55 | 2938 | if (!NILP (window->next)) |
7ab12479 | 2939 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 2940 | if (!NILP (window->vchild)) |
7ab12479 | 2941 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 2942 | if (!NILP (window->hchild)) |
7ab12479 JB |
2943 | count += count_windows (XWINDOW (window->hchild)); |
2944 | return count; | |
2945 | } | |
2946 | ||
2947 | static int | |
2948 | save_window_save (window, vector, i) | |
2949 | Lisp_Object window; | |
2950 | struct Lisp_Vector *vector; | |
2951 | int i; | |
2952 | { | |
2953 | register struct saved_window *p; | |
2954 | register struct window *w; | |
2955 | register Lisp_Object tem; | |
2956 | ||
265a9e55 | 2957 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
2958 | { |
2959 | p = SAVED_WINDOW_N (vector, i); | |
2960 | w = XWINDOW (window); | |
2961 | ||
2962 | XFASTINT (w->temslot) = i++; | |
2963 | p->window = window; | |
2964 | p->buffer = w->buffer; | |
2965 | p->left = w->left; | |
2966 | p->top = w->top; | |
2967 | p->width = w->width; | |
2968 | p->height = w->height; | |
2969 | p->hscroll = w->hscroll; | |
2970 | p->display_table = w->display_table; | |
265a9e55 | 2971 | if (!NILP (w->buffer)) |
7ab12479 JB |
2972 | { |
2973 | /* Save w's value of point in the window configuration. | |
2974 | If w is the selected window, then get the value of point | |
2975 | from the buffer; pointm is garbage in the selected window. */ | |
2976 | if (EQ (window, selected_window)) | |
2977 | { | |
2978 | p->pointm = Fmake_marker (); | |
2979 | Fset_marker (p->pointm, BUF_PT (XBUFFER (w->buffer)), | |
2980 | w->buffer); | |
2981 | } | |
2982 | else | |
2983 | p->pointm = Fcopy_marker (w->pointm); | |
2984 | ||
2985 | p->start = Fcopy_marker (w->start); | |
2986 | p->start_at_line_beg = w->start_at_line_beg; | |
2987 | ||
2988 | tem = XBUFFER (w->buffer)->mark; | |
2989 | p->mark = Fcopy_marker (tem); | |
2990 | } | |
2991 | else | |
2992 | { | |
2993 | p->pointm = Qnil; | |
2994 | p->start = Qnil; | |
2995 | p->mark = Qnil; | |
2996 | p->start_at_line_beg = Qnil; | |
2997 | } | |
2998 | ||
265a9e55 | 2999 | if (NILP (w->parent)) |
7ab12479 JB |
3000 | p->parent = Qnil; |
3001 | else | |
3002 | p->parent = XWINDOW (w->parent)->temslot; | |
3003 | ||
265a9e55 | 3004 | if (NILP (w->prev)) |
7ab12479 JB |
3005 | p->prev = Qnil; |
3006 | else | |
3007 | p->prev = XWINDOW (w->prev)->temslot; | |
3008 | ||
265a9e55 | 3009 | if (!NILP (w->vchild)) |
7ab12479 | 3010 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 3011 | if (!NILP (w->hchild)) |
7ab12479 JB |
3012 | i = save_window_save (w->hchild, vector, i); |
3013 | } | |
3014 | ||
3015 | return i; | |
3016 | } | |
3017 | ||
3018 | DEFUN ("current-window-configuration", | |
43bad991 | 3019 | Fcurrent_window_configuration, Scurrent_window_configuration, 0, 1, 0, |
44fa5b1e JB |
3020 | "Return an object representing the current window configuration of FRAME.\n\ |
3021 | If FRAME is nil or omitted, use the selected frame.\n\ | |
7ab12479 JB |
3022 | This describes the number of windows, their sizes and current buffers,\n\ |
3023 | and for each displayed buffer, where display starts, and the positions of\n\ | |
3024 | point and mark. An exception is made for point in the current buffer:\n\ | |
bdc727bf JB |
3025 | its value is -not- saved.\n\ |
3026 | This also records the currently selected frame, and FRAME's focus\n\ | |
3027 | redirection (see `redirect-frame-focus').") | |
44fa5b1e JB |
3028 | (frame) |
3029 | Lisp_Object frame; | |
7ab12479 JB |
3030 | { |
3031 | register Lisp_Object tem; | |
3032 | register int n_windows; | |
3033 | register struct save_window_data *data; | |
3034 | register int i; | |
44fa5b1e | 3035 | FRAME_PTR f; |
43bad991 | 3036 | |
44fa5b1e JB |
3037 | if (NILP (frame)) |
3038 | f = selected_frame; | |
43bad991 JB |
3039 | else |
3040 | { | |
44fa5b1e JB |
3041 | CHECK_LIVE_FRAME (frame, 0); |
3042 | f = XFRAME (frame); | |
43bad991 | 3043 | } |
7ab12479 | 3044 | |
44fa5b1e | 3045 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
7ab12479 JB |
3046 | data = (struct save_window_data *) |
3047 | XVECTOR (Fmake_vector (make_number (SAVE_WINDOW_DATA_SIZE), | |
3048 | Qnil)); | |
44fa5b1e JB |
3049 | XFASTINT (data->frame_width) = FRAME_WIDTH (f); |
3050 | XFASTINT (data->frame_height) = FRAME_HEIGHT (f); | |
8f6ea2e9 | 3051 | XFASTINT (data->frame_menu_bar_lines) = FRAME_MENU_BAR_LINES (f); |
ad854249 | 3052 | #ifdef MULTI_FRAME |
bdc727bf | 3053 | XSET (data->selected_frame, Lisp_Frame, selected_frame); |
ad854249 | 3054 | #endif |
44fa5b1e | 3055 | data->current_window = FRAME_SELECTED_WINDOW (f); |
7ab12479 JB |
3056 | XSET (data->current_buffer, Lisp_Buffer, current_buffer); |
3057 | data->minibuf_scroll_window = Vminibuf_scroll_window; | |
44fa5b1e | 3058 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 3059 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
7ab12479 JB |
3060 | tem = Fmake_vector (make_number (n_windows), Qnil); |
3061 | data->saved_windows = tem; | |
3062 | for (i = 0; i < n_windows; i++) | |
3063 | XVECTOR (tem)->contents[i] | |
3064 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
44fa5b1e | 3065 | save_window_save (FRAME_ROOT_WINDOW (f), |
7ab12479 JB |
3066 | XVECTOR (tem), 0); |
3067 | XSET (tem, Lisp_Window_Configuration, data); | |
3068 | return (tem); | |
3069 | } | |
3070 | ||
3071 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
3072 | 0, UNEVALLED, 0, | |
3073 | "Execute body, preserving window sizes and contents.\n\ | |
eb16ec06 RS |
3074 | Restore which buffer appears in which window, where display starts,\n\ |
3075 | and the value of point and mark for each window.\n\ | |
3076 | Also restore which buffer is current.\n\ | |
3077 | But do not preserve point in the current buffer.\n\ | |
7ab12479 JB |
3078 | Does not restore the value of point in current buffer.") |
3079 | (args) | |
3080 | Lisp_Object args; | |
3081 | { | |
3082 | register Lisp_Object val; | |
3083 | register int count = specpdl_ptr - specpdl; | |
3084 | ||
3085 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 3086 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
3087 | val = Fprogn (args); |
3088 | return unbind_to (count, val); | |
3089 | } | |
3090 | \f | |
3091 | init_window_once () | |
3092 | { | |
44fa5b1e JB |
3093 | #ifdef MULTI_FRAME |
3094 | selected_frame = make_terminal_frame (); | |
3095 | minibuf_window = selected_frame->minibuffer_window; | |
3096 | selected_window = selected_frame->selected_window; | |
3097 | last_nonminibuf_frame = selected_frame; | |
3098 | #else /* not MULTI_FRAME */ | |
7ab12479 JB |
3099 | extern Lisp_Object get_minibuffer (); |
3100 | ||
95605e15 | 3101 | minibuf_window = make_window (); |
4b206065 | 3102 | FRAME_ROOT_WINDOW (selected_frame) = make_window (); |
7ab12479 | 3103 | |
44fa5b1e JB |
3104 | XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->next = minibuf_window; |
3105 | XWINDOW (minibuf_window)->prev = FRAME_ROOT_WINDOW (selected_frame); | |
4b206065 | 3106 | XWINDOW (minibuf_window)->mini_p = Qt; |
7ab12479 JB |
3107 | |
3108 | /* These values 9 and 10 are arbitrary, | |
3109 | just so that there is "something there." | |
3110 | Correct values are put in in init_xdisp */ | |
3111 | ||
44fa5b1e | 3112 | XFASTINT (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->width) = 10; |
7ab12479 JB |
3113 | XFASTINT (XWINDOW (minibuf_window)->width) = 10; |
3114 | ||
44fa5b1e | 3115 | XFASTINT (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->height) = 9; |
7ab12479 JB |
3116 | XFASTINT (XWINDOW (minibuf_window)->top) = 9; |
3117 | XFASTINT (XWINDOW (minibuf_window)->height) = 1; | |
3118 | ||
3119 | /* Prevent error in Fset_window_buffer. */ | |
44fa5b1e | 3120 | XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->buffer = Qt; |
7ab12479 JB |
3121 | XWINDOW (minibuf_window)->buffer = Qt; |
3122 | ||
3123 | /* Now set them up for real. */ | |
44fa5b1e | 3124 | Fset_window_buffer (FRAME_ROOT_WINDOW (selected_frame), |
e5d77022 | 3125 | Fcurrent_buffer ()); |
7ab12479 JB |
3126 | Fset_window_buffer (minibuf_window, get_minibuffer (0)); |
3127 | ||
44fa5b1e | 3128 | selected_window = FRAME_ROOT_WINDOW (selected_frame); |
1d8d96fa JB |
3129 | /* Make sure this window seems more recently used than |
3130 | a newly-created, never-selected window. Increment | |
3131 | window_select_count so the first selection ever will get | |
3132 | something newer than this. */ | |
3133 | XFASTINT (XWINDOW (selected_window)->use_time) = ++window_select_count; | |
44fa5b1e | 3134 | #endif /* not MULTI_FRAME */ |
7ab12479 JB |
3135 | } |
3136 | ||
3137 | syms_of_window () | |
3138 | { | |
3139 | Qwindowp = intern ("windowp"); | |
3140 | staticpro (&Qwindowp); | |
3141 | ||
806b4d9b JB |
3142 | Qwindow_live_p = intern ("window-live-p"); |
3143 | staticpro (&Qwindow_live_p); | |
605be8af | 3144 | |
2f83aebe | 3145 | #ifndef MULTI_FRAME |
7ab12479 JB |
3146 | /* Make sure all windows get marked */ |
3147 | staticpro (&minibuf_window); | |
2f83aebe | 3148 | #endif |
7ab12479 JB |
3149 | |
3150 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, | |
3151 | "Non-nil means call as function to display a help buffer.\n\ | |
3152 | Used by `with-output-to-temp-buffer'."); | |
3153 | Vtemp_buffer_show_function = Qnil; | |
3154 | ||
3155 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
3156 | "If non-nil, function to call to handle `display-buffer'.\n\ | |
3157 | It will receive two args, the buffer and a flag which if non-nil means\n\ | |
3158 | that the currently selected window is not acceptable.\n\ | |
3159 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window'\n\ | |
3160 | work using this function."); | |
3161 | Vdisplay_buffer_function = Qnil; | |
3162 | ||
7ab12479 JB |
3163 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
3164 | "Non-nil means it is the window that C-M-v in minibuffer should scroll."); | |
3165 | Vminibuf_scroll_window = Qnil; | |
3166 | ||
3167 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, | |
3168 | "If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window."); | |
3169 | Vother_window_scroll_buffer = Qnil; | |
3170 | ||
44fa5b1e | 3171 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
700f75a4 | 3172 | "*Non-nil means `display-buffer' should make a separate frame."); |
44fa5b1e | 3173 | pop_up_frames = 0; |
7ab12479 | 3174 | |
44fa5b1e | 3175 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
a90712c2 | 3176 | "Function to call to handle automatic new frame creation.\n\ |
44fa5b1e | 3177 | It is called with no arguments and should return a newly created frame.\n\ |
7ab12479 | 3178 | \n\ |
44fa5b1e JB |
3179 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))'\n\ |
3180 | where `pop-up-frame-alist' would hold the default frame parameters."); | |
3181 | Vpop_up_frame_function = Qnil; | |
7ab12479 | 3182 | |
a90712c2 RS |
3183 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
3184 | "*List of buffer names that should have their own special frames.\n\ | |
3185 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
3186 | using `special-display-function'. See also `special-display-regexps'."); | |
3187 | Vspecial_display_buffer_names = Qnil; | |
3188 | ||
3189 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
3190 | "*List of regexps saying which buffers should have their own special frames.\n\ | |
3191 | If a buffer name matches one of these regexps, it gets its own frame.\n\ | |
3192 | Displaying a buffer whose name is in this list makes a special frame for it\n\ | |
3193 | using `special-display-function'. See also `special-display-buffer-names'."); | |
3194 | Vspecial_display_regexps = Qnil; | |
3195 | ||
3196 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
3197 | "Function to call to make a new frame for a special buffer.\n\ | |
3198 | It is called with one argument, the buffer,\n\ | |
3199 | and should return a window displaying that buffer.\n\ | |
3200 | The default value makes a separate frame for the buffer,\n\ | |
3201 | using `special-display-alist' to specify the frame parameters.\n\ | |
3202 | \n\ | |
3203 | A buffer is special if its is listed in `special-display-buffer-names'\n\ | |
3204 | or matches a regexp in `special-display-regexps'."); | |
3205 | Vspecial_display_function = Qnil; | |
3206 | ||
7ab12479 JB |
3207 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
3208 | "*Non-nil means display-buffer should make new windows."); | |
3209 | pop_up_windows = 1; | |
3210 | ||
3211 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
3212 | "*Number of lines of continuity when scrolling by screenfuls."); | |
3213 | next_screen_context_lines = 2; | |
3214 | ||
3215 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
3216 | "*display-buffer would prefer to split the largest window if this large.\n\ | |
3217 | If there is only one window, it is split regardless of this value."); | |
3218 | split_height_threshold = 500; | |
3219 | ||
3220 | DEFVAR_INT ("window-min-height", &window_min_height, | |
3221 | "*Delete any window less than this tall (including its mode line)."); | |
3222 | window_min_height = 4; | |
3223 | ||
3224 | DEFVAR_INT ("window-min-width", &window_min_width, | |
3225 | "*Delete any window less than this wide."); | |
3226 | window_min_width = 10; | |
3227 | ||
3228 | defsubr (&Sselected_window); | |
3229 | defsubr (&Sminibuffer_window); | |
3230 | defsubr (&Swindow_minibuffer_p); | |
3231 | defsubr (&Swindowp); | |
806b4d9b | 3232 | defsubr (&Swindow_live_p); |
7ab12479 JB |
3233 | defsubr (&Spos_visible_in_window_p); |
3234 | defsubr (&Swindow_buffer); | |
3235 | defsubr (&Swindow_height); | |
3236 | defsubr (&Swindow_width); | |
3237 | defsubr (&Swindow_hscroll); | |
3238 | defsubr (&Sset_window_hscroll); | |
3239 | defsubr (&Swindow_edges); | |
d5783c40 JB |
3240 | defsubr (&Scoordinates_in_window_p); |
3241 | defsubr (&Swindow_at); | |
7ab12479 JB |
3242 | defsubr (&Swindow_point); |
3243 | defsubr (&Swindow_start); | |
3244 | defsubr (&Swindow_end); | |
3245 | defsubr (&Sset_window_point); | |
3246 | defsubr (&Sset_window_start); | |
3247 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 3248 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
3249 | defsubr (&Swindow_display_table); |
3250 | defsubr (&Sset_window_display_table); | |
3251 | defsubr (&Snext_window); | |
3252 | defsubr (&Sprevious_window); | |
3253 | defsubr (&Sother_window); | |
3254 | defsubr (&Sget_lru_window); | |
3255 | defsubr (&Sget_largest_window); | |
3256 | defsubr (&Sget_buffer_window); | |
3257 | defsubr (&Sdelete_other_windows); | |
3258 | defsubr (&Sdelete_windows_on); | |
3259 | defsubr (&Sreplace_buffer_in_windows); | |
3260 | defsubr (&Sdelete_window); | |
3261 | defsubr (&Sset_window_buffer); | |
3262 | defsubr (&Sselect_window); | |
3263 | defsubr (&Sdisplay_buffer); | |
3264 | defsubr (&Ssplit_window); | |
3265 | defsubr (&Senlarge_window); | |
3266 | defsubr (&Sshrink_window); | |
3267 | defsubr (&Sscroll_up); | |
3268 | defsubr (&Sscroll_down); | |
3269 | defsubr (&Sscroll_left); | |
3270 | defsubr (&Sscroll_right); | |
ccd0664b | 3271 | defsubr (&Sother_window_for_scrolling); |
7ab12479 JB |
3272 | defsubr (&Sscroll_other_window); |
3273 | defsubr (&Srecenter); | |
3274 | defsubr (&Smove_to_window_line); | |
3275 | defsubr (&Swindow_configuration_p); | |
3276 | defsubr (&Sset_window_configuration); | |
3277 | defsubr (&Scurrent_window_configuration); | |
3278 | defsubr (&Ssave_window_excursion); | |
3279 | } | |
3280 | ||
3281 | keys_of_window () | |
3282 | { | |
3283 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
3284 | initial_define_key (control_x_map, '2', "split-window"); | |
3285 | initial_define_key (control_x_map, '0', "delete-window"); | |
3286 | initial_define_key (control_x_map, 'o', "other-window"); | |
3287 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
3288 | initial_define_key (control_x_map, '<', "scroll-left"); | |
3289 | initial_define_key (control_x_map, '>', "scroll-right"); | |
3290 | ||
3291 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
3292 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
3293 | initial_define_key (meta_map, 'v', "scroll-down"); | |
3294 | ||
3295 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
3296 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
3297 | } |