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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
1113d9db | 3 | Copyright (C) 1985, 1986, 1987, 1992 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 | ||
7ab12479 JB |
21 | #include "config.h" |
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 | |
605be8af | 32 | Lisp_Object Qwindowp, Qlive_window_p; |
7ab12479 JB |
33 | |
34 | Lisp_Object Fnext_window (), Fdelete_window (), Fselect_window (); | |
35 | Lisp_Object Fset_window_buffer (), Fsplit_window (), Frecenter (); | |
36 | ||
37 | static void delete_all_subwindows (); | |
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 | ||
63 | /* Window that the mouse is over (nil if no mouse support). */ | |
64 | Lisp_Object Vmouse_window; | |
65 | ||
66 | /* Last mouse click data structure (nil if no mouse support). */ | |
67 | Lisp_Object Vmouse_event; | |
68 | ||
69 | /* Non-nil means it's function to call to display temp buffers. */ | |
70 | Lisp_Object Vtemp_buffer_show_function; | |
71 | ||
72 | /* If a window gets smaller than either of these, it is removed. */ | |
73 | int window_min_height; | |
74 | int window_min_width; | |
75 | ||
76 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
77 | int pop_up_windows; | |
78 | ||
44fa5b1e JB |
79 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
80 | int pop_up_frames; | |
7ab12479 JB |
81 | |
82 | /* Non-nil means use this function instead of default */ | |
44fa5b1e | 83 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
84 | |
85 | /* Function to call to handle Fdisplay_buffer. */ | |
86 | Lisp_Object Vdisplay_buffer_function; | |
87 | ||
88 | /* Fdisplay_buffer always splits the largest window | |
89 | if that window is more than this high. */ | |
90 | int split_height_threshold; | |
91 | ||
92 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
93 | int next_screen_context_lines; | |
94 | ||
95 | /* Incremented for each window created. */ | |
96 | static int sequence_number; | |
97 | ||
98 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
99 | \f | |
100 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
101 | "Returns t if OBJ is a window.") | |
102 | (obj) | |
103 | Lisp_Object obj; | |
104 | { | |
105 | return XTYPE (obj) == Lisp_Window ? Qt : Qnil; | |
106 | } | |
107 | ||
605be8af JB |
108 | DEFUN ("live-window-p", Flive_window_p, Slive_window_p, 1, 1, 0, |
109 | "Returns t if OBJ is a window which is currently visible.") | |
110 | (obj) | |
111 | Lisp_Object obj; | |
112 | { | |
113 | return ((XTYPE (obj) == Lisp_Window | |
114 | && ! NILP (XWINDOW (obj)->buffer)) | |
115 | ? Qt : Qnil); | |
116 | } | |
117 | ||
7ab12479 JB |
118 | Lisp_Object |
119 | make_window () | |
120 | { | |
121 | register Lisp_Object val; | |
122 | register struct window *p; | |
123 | ||
124 | /* Add sizeof (Lisp_Object) here because sizeof (struct Lisp_Vector) | |
125 | includes the first element. */ | |
126 | val = Fmake_vector ( | |
127 | make_number ((sizeof (struct window) - sizeof (struct Lisp_Vector) | |
128 | + sizeof (Lisp_Object)) | |
129 | / sizeof (Lisp_Object)), | |
130 | Qnil); | |
131 | XSETTYPE (val, Lisp_Window); | |
132 | p = XWINDOW (val); | |
133 | XFASTINT (p->sequence_number) = ++sequence_number; | |
134 | XFASTINT (p->left) = XFASTINT (p->top) | |
135 | = XFASTINT (p->height) = XFASTINT (p->width) | |
136 | = XFASTINT (p->hscroll) = 0; | |
137 | XFASTINT (p->last_point_x) = XFASTINT (p->last_point_y) = 0; | |
138 | p->start = Fmake_marker (); | |
139 | p->pointm = Fmake_marker (); | |
140 | XFASTINT (p->use_time) = 0; | |
44fa5b1e | 141 | p->frame = Qnil; |
7ab12479 JB |
142 | p->display_table = Qnil; |
143 | p->dedicated = Qnil; | |
144 | return val; | |
145 | } | |
146 | ||
147 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
148 | "Return the window that the cursor now appears in and commands apply to.") | |
149 | () | |
150 | { | |
151 | return selected_window; | |
152 | } | |
153 | ||
83762ba4 JB |
154 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
155 | "Return the window used now for minibuffers.\n\ | |
156 | If the optional argument FRAME is specified, return the minibuffer window\n\ | |
157 | used by that frame.") | |
158 | (frame) | |
159 | Lisp_Object frame; | |
7ab12479 | 160 | { |
44fa5b1e | 161 | #ifdef MULTI_FRAME |
83762ba4 JB |
162 | if (NILP (frame)) |
163 | XSET (frame, Lisp_Frame, selected_frame); | |
164 | else | |
165 | CHECK_LIVE_FRAME (frame, 0); | |
166 | #endif | |
167 | ||
168 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); | |
7ab12479 JB |
169 | } |
170 | ||
605be8af | 171 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
7ab12479 JB |
172 | "Returns non-nil if WINDOW is a minibuffer window.") |
173 | (window) | |
174 | Lisp_Object window; | |
175 | { | |
176 | struct window *w = decode_window (window); | |
177 | return (MINI_WINDOW_P (w) ? Qt : Qnil); | |
178 | } | |
179 | ||
180 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, | |
181 | Spos_visible_in_window_p, 0, 2, 0, | |
44fa5b1e | 182 | "Return t if position POS is currently on the frame in WINDOW.\n\ |
7ab12479 JB |
183 | Returns nil if that position is scrolled vertically out of view.\n\ |
184 | POS defaults to point; WINDOW, to the selected window.") | |
185 | (pos, window) | |
186 | Lisp_Object pos, window; | |
187 | { | |
188 | register struct window *w; | |
189 | register int top; | |
190 | register int height; | |
191 | register int posint; | |
192 | register struct buffer *buf; | |
193 | struct position posval; | |
194 | ||
265a9e55 | 195 | if (NILP (pos)) |
7ab12479 JB |
196 | posint = point; |
197 | else | |
198 | { | |
199 | CHECK_NUMBER_COERCE_MARKER (pos, 0); | |
200 | posint = XINT (pos); | |
201 | } | |
202 | ||
605be8af | 203 | w = decode_window (window); |
7ab12479 JB |
204 | top = marker_position (w->start); |
205 | ||
206 | if (posint < top) | |
207 | return Qnil; | |
208 | ||
209 | height = XFASTINT (w->height) - ! MINI_WINDOW_P (w); | |
210 | ||
211 | buf = XBUFFER (w->buffer); | |
212 | if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf)) | |
213 | { | |
44fa5b1e | 214 | /* If frame is up to date, |
7ab12479 JB |
215 | use the info recorded about how much text fit on it. */ |
216 | if (posint < BUF_Z (buf) - XFASTINT (w->window_end_pos) | |
217 | || (XFASTINT (w->window_end_vpos) < height)) | |
218 | return Qt; | |
219 | return Qnil; | |
220 | } | |
221 | else | |
222 | { | |
223 | if (posint > BUF_Z (buf)) | |
224 | return Qnil; | |
225 | ||
226 | /* If that info is not correct, calculate afresh */ | |
227 | posval = *compute_motion (top, 0, 0, posint, height, 0, | |
228 | XFASTINT (w->width) - 1 | |
229 | - (XFASTINT (w->width) + XFASTINT (w->left) | |
44fa5b1e | 230 | != FRAME_WIDTH (XFRAME (w->frame))), |
7ab12479 JB |
231 | XINT (w->hscroll), 0); |
232 | ||
233 | return posval.vpos < height ? Qt : Qnil; | |
234 | } | |
235 | } | |
236 | \f | |
237 | static struct window * | |
238 | decode_window (window) | |
239 | register Lisp_Object window; | |
240 | { | |
265a9e55 | 241 | if (NILP (window)) |
7ab12479 JB |
242 | return XWINDOW (selected_window); |
243 | ||
605be8af | 244 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
245 | return XWINDOW (window); |
246 | } | |
247 | ||
248 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, | |
249 | "Return the buffer that WINDOW is displaying.") | |
250 | (window) | |
251 | Lisp_Object window; | |
252 | { | |
253 | return decode_window (window)->buffer; | |
254 | } | |
255 | ||
256 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
257 | "Return the number of lines in WINDOW (including its mode line).") | |
258 | (window) | |
259 | Lisp_Object window; | |
260 | { | |
261 | return decode_window (window)->height; | |
262 | } | |
263 | ||
264 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
265 | "Return the number of columns in WINDOW.") | |
266 | (window) | |
267 | Lisp_Object window; | |
268 | { | |
269 | register struct window *w = decode_window (window); | |
270 | register int width = w->width; | |
271 | ||
272 | /* If this window does not end at the right margin, | |
273 | must deduct one column for the border */ | |
44fa5b1e | 274 | if ((width + w->left) == FRAME_WIDTH (XFRAME (WINDOW_FRAME (w)))) |
7ab12479 JB |
275 | return width; |
276 | return width - 1; | |
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); | |
300 | if (w->hscroll != ncol) | |
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, |
44fa5b1e JB |
436 | "Return window containing row ROW, column COLUMN on FRAME.\n\ |
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.") |
44fa5b1e JB |
440 | (row, column, frame) |
441 | Lisp_Object row, column, 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 |
95605e15 JB |
451 | CHECK_NUMBER (row, 0); |
452 | CHECK_NUMBER (column, 1); | |
7ab12479 | 453 | |
44fa5b1e | 454 | return window_from_coordinates (XFRAME (frame), |
95605e15 | 455 | XINT (row), XINT (column), |
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); | |
495 | ||
496 | XSET (value, Lisp_Int, | |
497 | BUF_Z (current_buffer) - XFASTINT (w->window_end_pos)); | |
498 | ||
499 | return value; | |
500 | } | |
501 | ||
502 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
503 | "Make point value in WINDOW be at position POS in WINDOW's buffer.") | |
504 | (window, pos) | |
505 | Lisp_Object window, pos; | |
506 | { | |
507 | register struct window *w = decode_window (window); | |
508 | ||
509 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
510 | if (w == XWINDOW (selected_window)) | |
511 | Fgoto_char (pos); | |
512 | else | |
513 | set_marker_restricted (w->pointm, pos, w->buffer); | |
514 | ||
515 | return pos; | |
516 | } | |
517 | ||
518 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
519 | "Make display in WINDOW start at position POS in WINDOW's buffer.\n\ | |
520 | Optional third arg NOFORCE non-nil inhibits next redisplay\n\ | |
521 | from overriding motion of point in order to display at this exact start.") | |
522 | (window, pos, noforce) | |
523 | Lisp_Object window, pos, noforce; | |
524 | { | |
525 | register struct window *w = decode_window (window); | |
526 | ||
527 | CHECK_NUMBER_COERCE_MARKER (pos, 1); | |
528 | set_marker_restricted (w->start, pos, w->buffer); | |
529 | /* this is not right, but much easier than doing what is right. */ | |
530 | w->start_at_line_beg = Qnil; | |
265a9e55 | 531 | if (NILP (noforce)) |
7ab12479 JB |
532 | w->force_start = Qt; |
533 | w->update_mode_line = Qt; | |
534 | XFASTINT (w->last_modified) = 0; | |
62c07cc7 JB |
535 | if (!EQ (window, selected_window)) |
536 | windows_or_buffers_changed++; | |
7ab12479 JB |
537 | return pos; |
538 | } | |
539 | ||
540 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
541 | 1, 1, 0, | |
542 | "Return WINDOW's dedicated object, usually t or nil.\n\ | |
543 | See also `set-window-buffer-dedicated'.") | |
544 | (window) | |
545 | Lisp_Object window; | |
546 | { | |
547 | return decode_window (window)->dedicated; | |
548 | } | |
549 | ||
d207b766 RS |
550 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
551 | Sset_window_dedicated_p, 2, 2, 0, | |
552 | "Control whether WINDOW is dedicated to the buffer it displays.\n\ | |
553 | If it is dedicated, Emacs will not automatically change\n\ | |
554 | which buffer appears in it.\n\ | |
555 | The second argument is the new value for the dedication flag;\n\ | |
556 | non-nil means yes.") | |
7ab12479 JB |
557 | (window, arg) |
558 | Lisp_Object window, arg; | |
559 | { | |
560 | register struct window *w = decode_window (window); | |
561 | ||
265a9e55 | 562 | if (NILP (arg)) |
7ab12479 JB |
563 | w->dedicated = Qnil; |
564 | else | |
d207b766 | 565 | w->dedicated = Qt; |
7ab12479 JB |
566 | |
567 | return w->dedicated; | |
568 | } | |
569 | ||
570 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
571 | 0, 1, 0, | |
572 | "Return the display-table that WINDOW is using.") | |
573 | (window) | |
574 | Lisp_Object window; | |
575 | { | |
576 | return decode_window (window)->display_table; | |
577 | } | |
578 | ||
579 | /* Get the display table for use currently on window W. | |
580 | This is either W's display table or W's buffer's display table. | |
581 | Ignore the specified tables if they are not valid; | |
582 | if no valid table is specified, return 0. */ | |
583 | ||
584 | struct Lisp_Vector * | |
585 | window_display_table (w) | |
586 | struct window *w; | |
587 | { | |
588 | Lisp_Object tem; | |
589 | tem = w->display_table; | |
590 | if (XTYPE (tem) == Lisp_Vector && XVECTOR (tem)->size == DISP_TABLE_SIZE) | |
591 | return XVECTOR (tem); | |
592 | tem = XBUFFER (w->buffer)->display_table; | |
593 | if (XTYPE (tem) == Lisp_Vector && XVECTOR (tem)->size == DISP_TABLE_SIZE) | |
594 | return XVECTOR (tem); | |
595 | tem = Vstandard_display_table; | |
596 | if (XTYPE (tem) == Lisp_Vector && XVECTOR (tem)->size == DISP_TABLE_SIZE) | |
597 | return XVECTOR (tem); | |
598 | return 0; | |
599 | } | |
600 | ||
3a2712f9 | 601 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
7ab12479 JB |
602 | "Set WINDOW's display-table to TABLE.") |
603 | (window, table) | |
604 | register Lisp_Object window, table; | |
605 | { | |
606 | register struct window *w; | |
607 | register Lisp_Object z; /* Return value. */ | |
608 | ||
609 | w = decode_window (window); | |
610 | w->display_table = table; | |
611 | return table; | |
612 | } | |
613 | \f | |
614 | /* Record info on buffer window w is displaying | |
615 | when it is about to cease to display that buffer. */ | |
616 | static | |
617 | unshow_buffer (w) | |
618 | register struct window *w; | |
619 | { | |
620 | Lisp_Object buf = w->buffer; | |
621 | ||
622 | if (XBUFFER (buf) != XMARKER (w->pointm)->buffer) | |
623 | abort (); | |
624 | ||
625 | if (w == XWINDOW (selected_window) | |
626 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
627 | /* Do this except when the selected window's buffer | |
628 | is being removed from some other window. */ | |
629 | XBUFFER (buf)->last_window_start = marker_position (w->start); | |
630 | ||
631 | /* Point in the selected window's buffer | |
632 | is actually stored in that buffer, and the window's pointm isn't used. | |
633 | So don't clobber point in that buffer. */ | |
634 | if (! EQ (buf, XWINDOW (selected_window)->buffer)) | |
635 | BUF_PT (XBUFFER (buf)) | |
636 | = clip_to_bounds (BUF_BEGV (XBUFFER (buf)), | |
637 | marker_position (w->pointm), | |
638 | BUF_ZV (XBUFFER (buf))); | |
639 | } | |
640 | ||
641 | /* Put replacement into the window structure in place of old. */ | |
642 | static | |
643 | replace_window (old, replacement) | |
644 | Lisp_Object old, replacement; | |
645 | { | |
646 | register Lisp_Object tem; | |
647 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
648 | ||
44fa5b1e JB |
649 | /* If OLD is its frame's root_window, then replacement is the new |
650 | root_window for that frame. */ | |
7ab12479 | 651 | |
44fa5b1e JB |
652 | if (old == FRAME_ROOT_WINDOW (XFRAME (o->frame))) |
653 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; | |
7ab12479 JB |
654 | |
655 | p->left = o->left; | |
656 | p->top = o->top; | |
657 | p->width = o->width; | |
658 | p->height = o->height; | |
659 | ||
660 | p->next = tem = o->next; | |
265a9e55 | 661 | if (!NILP (tem)) |
7ab12479 JB |
662 | XWINDOW (tem)->prev = replacement; |
663 | ||
664 | p->prev = tem = o->prev; | |
265a9e55 | 665 | if (!NILP (tem)) |
7ab12479 JB |
666 | XWINDOW (tem)->next = replacement; |
667 | ||
668 | p->parent = tem = o->parent; | |
265a9e55 | 669 | if (!NILP (tem)) |
7ab12479 JB |
670 | { |
671 | if (EQ (XWINDOW (tem)->vchild, old)) | |
672 | XWINDOW (tem)->vchild = replacement; | |
673 | if (EQ (XWINDOW (tem)->hchild, old)) | |
674 | XWINDOW (tem)->hchild = replacement; | |
675 | } | |
676 | ||
677 | /*** Here, if replacement is a vertical combination | |
678 | and so is its new parent, we should make replacement's | |
679 | children be children of that parent instead. ***/ | |
680 | } | |
681 | ||
682 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
683 | "Remove WINDOW from the display. Default is selected window.") | |
684 | (window) | |
685 | register Lisp_Object window; | |
686 | { | |
687 | register Lisp_Object tem, parent, sib; | |
688 | register struct window *p; | |
689 | register struct window *par; | |
690 | ||
605be8af JB |
691 | /* Because this function is called by other C code on non-leaf |
692 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
693 | so we can't decode_window here. */ | |
265a9e55 | 694 | if (NILP (window)) |
7ab12479 JB |
695 | window = selected_window; |
696 | else | |
697 | CHECK_WINDOW (window, 0); | |
7ab12479 | 698 | p = XWINDOW (window); |
605be8af JB |
699 | |
700 | /* It's okay to delete an already-deleted window. */ | |
701 | if (NILP (p->buffer) | |
702 | && NILP (p->hchild) | |
703 | && NILP (p->vchild)) | |
704 | return Qnil; | |
705 | ||
7ab12479 | 706 | parent = p->parent; |
265a9e55 | 707 | if (NILP (parent)) |
7ab12479 JB |
708 | error ("Attempt to delete minibuffer or sole ordinary window"); |
709 | par = XWINDOW (parent); | |
710 | ||
711 | windows_or_buffers_changed++; | |
712 | ||
605be8af JB |
713 | /* Are we trying to delete any frame's selected window? */ |
714 | { | |
715 | Lisp_Object frame = WINDOW_FRAME (XWINDOW (window)); | |
716 | ||
717 | if (EQ (window, FRAME_SELECTED_WINDOW (XFRAME (frame)))) | |
718 | { | |
719 | Lisp_Object alternative = Fnext_window (window, Qlambda, Qnil); | |
720 | ||
721 | /* If we're about to delete the selected window on the | |
722 | selected frame, then we should use Fselect_window to select | |
723 | the new window. On the other hand, if we're about to | |
724 | delete the selected window on any other frame, we shouldn't do | |
725 | anything but set the frame's selected_window slot. */ | |
726 | if (EQ (window, selected_window)) | |
727 | Fselect_window (alternative); | |
728 | else | |
729 | FRAME_SELECTED_WINDOW (XFRAME (frame)) = alternative; | |
730 | } | |
731 | } | |
7ab12479 JB |
732 | |
733 | tem = p->buffer; | |
734 | /* tem is null for dummy parent windows | |
735 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 736 | if (!NILP (tem)) |
7ab12479 JB |
737 | { |
738 | unshow_buffer (p); | |
739 | unchain_marker (p->pointm); | |
740 | unchain_marker (p->start); | |
7ab12479 JB |
741 | } |
742 | ||
743 | tem = p->next; | |
265a9e55 | 744 | if (!NILP (tem)) |
7ab12479 JB |
745 | XWINDOW (tem)->prev = p->prev; |
746 | ||
747 | tem = p->prev; | |
265a9e55 | 748 | if (!NILP (tem)) |
7ab12479 JB |
749 | XWINDOW (tem)->next = p->next; |
750 | ||
751 | if (EQ (window, par->hchild)) | |
752 | par->hchild = p->next; | |
753 | if (EQ (window, par->vchild)) | |
754 | par->vchild = p->next; | |
755 | ||
756 | /* Find one of our siblings to give our space to. */ | |
757 | sib = p->prev; | |
265a9e55 | 758 | if (NILP (sib)) |
7ab12479 JB |
759 | { |
760 | /* If p gives its space to its next sibling, that sibling needs | |
761 | to have its top/left side pulled back to where p's is. | |
762 | set_window_{height,width} will re-position the sibling's | |
763 | children. */ | |
764 | sib = p->next; | |
765 | XFASTINT (XWINDOW (sib)->top) = p->top; | |
766 | XFASTINT (XWINDOW (sib)->left) = p->left; | |
767 | } | |
768 | ||
769 | /* Stretch that sibling. */ | |
265a9e55 | 770 | if (!NILP (par->vchild)) |
7ab12479 JB |
771 | set_window_height (sib, |
772 | XFASTINT (XWINDOW (sib)->height) + XFASTINT (p->height), | |
773 | 1); | |
265a9e55 | 774 | if (!NILP (par->hchild)) |
7ab12479 JB |
775 | set_window_width (sib, |
776 | XFASTINT (XWINDOW (sib)->width) + XFASTINT (p->width), | |
777 | 1); | |
778 | ||
779 | /* If parent now has only one child, | |
780 | put the child into the parent's place. */ | |
7ab12479 | 781 | tem = par->hchild; |
265a9e55 | 782 | if (NILP (tem)) |
7ab12479 | 783 | tem = par->vchild; |
265a9e55 | 784 | if (NILP (XWINDOW (tem)->next)) |
7ab12479 | 785 | replace_window (parent, tem); |
605be8af JB |
786 | |
787 | /* Since we may be deleting combination windows, we must make sure that | |
788 | not only p but all its children have been marked as deleted. */ | |
789 | if (! NILP (p->hchild)) | |
790 | delete_all_subwindows (XWINDOW (p->hchild)); | |
791 | else if (! NILP (p->vchild)) | |
792 | delete_all_subwindows (XWINDOW (p->vchild)); | |
793 | ||
794 | /* Mark this window as deleted. */ | |
795 | p->buffer = p->hchild = p->vchild = Qnil; | |
796 | ||
7ab12479 JB |
797 | return Qnil; |
798 | } | |
799 | \f | |
7ab12479 | 800 | |
44fa5b1e | 801 | extern Lisp_Object next_frame (), prev_frame (); |
7ab12479 JB |
802 | |
803 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, | |
804 | "Return next window after WINDOW in canonical ordering of windows.\n\ | |
d5783c40 JB |
805 | If omitted, WINDOW defaults to the selected window.\n\ |
806 | \n\ | |
807 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
808 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
809 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
810 | minibuffer even if it is active.\n\ | |
811 | \n\ | |
44fa5b1e JB |
812 | Several frames may share a single minibuffer; if the minibuffer\n\ |
813 | counts, all windows on all frames that share that minibuffer count\n\ | |
d5783c40 | 814 | too. This means that next-window may be used to iterate through the\n\ |
44fa5b1e JB |
815 | set of windows even when the minibuffer is on another frame. If the\n\ |
816 | minibuffer does not count, only windows from WINDOW's frame count.\n\ | |
d5783c40 | 817 | \n\ |
44fa5b1e JB |
818 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
819 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
820 | above. If neither nil nor t, restrict to WINDOW's frame.") | |
821 | (window, minibuf, all_frames) | |
822 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
823 | { |
824 | register Lisp_Object tem; | |
d5783c40 | 825 | Lisp_Object start_window; |
7ab12479 | 826 | |
265a9e55 | 827 | if (NILP (window)) |
7ab12479 JB |
828 | window = selected_window; |
829 | else | |
605be8af | 830 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 831 | |
d5783c40 JB |
832 | start_window = window; |
833 | ||
834 | /* minibuf == nil may or may not include minibuffers. | |
835 | Decide if it does. */ | |
265a9e55 | 836 | if (NILP (minibuf)) |
d5783c40 JB |
837 | minibuf = (minibuf_level ? Qt : Qlambda); |
838 | ||
44fa5b1e JB |
839 | /* all_frames == nil doesn't specify which frames to include. |
840 | Decide which frames it includes. */ | |
841 | if (NILP (all_frames)) | |
842 | all_frames = (EQ (minibuf, Qt) | |
843 | ? (FRAME_MINIBUF_WINDOW | |
844 | (XFRAME | |
845 | (WINDOW_FRAME | |
d5783c40 JB |
846 | (XWINDOW (window))))) |
847 | : Qnil); | |
44fa5b1e JB |
848 | else if (! EQ (all_frames, Qt)) |
849 | all_frames = Qnil; | |
7ab12479 JB |
850 | |
851 | /* Do this loop at least once, to get the next window, and perhaps | |
852 | again, if we hit the minibuffer and that is not acceptable. */ | |
853 | do | |
854 | { | |
855 | /* Find a window that actually has a next one. This loop | |
856 | climbs up the tree. */ | |
265a9e55 JB |
857 | while (tem = XWINDOW (window)->next, NILP (tem)) |
858 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 859 | window = tem; |
d5783c40 | 860 | else |
7ab12479 | 861 | { |
44fa5b1e JB |
862 | /* We've reached the end of this frame. |
863 | Which other frames are acceptable? */ | |
864 | tem = WINDOW_FRAME (XWINDOW (window)); | |
865 | #ifdef MULTI_FRAME | |
866 | if (! NILP (all_frames)) | |
867 | tem = next_frame (tem, all_frames); | |
7ab12479 | 868 | #endif |
44fa5b1e | 869 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 870 | |
7ab12479 JB |
871 | break; |
872 | } | |
873 | ||
874 | window = tem; | |
d5783c40 | 875 | |
7ab12479 JB |
876 | /* If we're in a combination window, find its first child and |
877 | recurse on that. Otherwise, we've found the window we want. */ | |
878 | while (1) | |
879 | { | |
265a9e55 | 880 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 881 | window = XWINDOW (window)->hchild; |
265a9e55 | 882 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
883 | window = XWINDOW (window)->vchild; |
884 | else break; | |
885 | } | |
886 | } | |
d5783c40 JB |
887 | /* Which windows are acceptible? |
888 | Exit the loop and accept this window if | |
7ab12479 | 889 | this isn't a minibuffer window, or |
d5783c40 JB |
890 | we're accepting minibuffer windows, or |
891 | we've come all the way around and we're back at the original window. */ | |
7ab12479 | 892 | while (MINI_WINDOW_P (XWINDOW (window)) |
d5783c40 JB |
893 | && ! EQ (minibuf, Qt) |
894 | && window != start_window); | |
7ab12479 JB |
895 | |
896 | return window; | |
897 | } | |
898 | ||
899 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, | |
d5783c40 JB |
900 | "Return the window preceeding WINDOW in canonical ordering of windows.\n\ |
901 | If omitted, WINDOW defaults to the selected window.\n\ | |
902 | \n\ | |
903 | Optional second arg MINIBUF t means count the minibuffer window even\n\ | |
904 | if not active. MINIBUF nil or omitted means count the minibuffer iff\n\ | |
905 | it is active. MINIBUF neither t nor nil means not to count the\n\ | |
906 | minibuffer even if it is active.\n\ | |
907 | \n\ | |
44fa5b1e JB |
908 | Several frames may share a single minibuffer; if the minibuffer\n\ |
909 | counts, all windows on all frames that share that minibuffer count\n\ | |
d5783c40 | 910 | too. This means that previous-window may be used to iterate through\n\ |
44fa5b1e JB |
911 | the set of windows even when the minibuffer is on another frame. If\n\ |
912 | the minibuffer does not count, only windows from WINDOW's frame\n\ | |
d5783c40 JB |
913 | count.\n\ |
914 | \n\ | |
44fa5b1e JB |
915 | Optional third arg ALL-FRAMES t means include windows on all frames.\n\ |
916 | ALL-FRAMES nil or omitted means cycle within the frames as specified\n\ | |
917 | above. If neither nil nor t, restrict to WINDOW's frame.") | |
918 | (window, minibuf, all_frames) | |
919 | register Lisp_Object window, minibuf, all_frames; | |
7ab12479 JB |
920 | { |
921 | register Lisp_Object tem; | |
d5783c40 | 922 | Lisp_Object start_window; |
7ab12479 | 923 | |
265a9e55 | 924 | if (NILP (window)) |
7ab12479 JB |
925 | window = selected_window; |
926 | else | |
605be8af | 927 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 | 928 | |
d5783c40 JB |
929 | start_window = window; |
930 | ||
931 | /* minibuf == nil may or may not include minibuffers. | |
932 | Decide if it does. */ | |
265a9e55 | 933 | if (NILP (minibuf)) |
d5783c40 JB |
934 | minibuf = (minibuf_level ? Qt : Qlambda); |
935 | ||
44fa5b1e JB |
936 | /* all_frames == nil doesn't specify which frames to include. |
937 | Decide which frames it includes. */ | |
938 | if (NILP (all_frames)) | |
939 | all_frames = (EQ (minibuf, Qt) | |
940 | ? (FRAME_MINIBUF_WINDOW | |
941 | (XFRAME | |
942 | (WINDOW_FRAME | |
d5783c40 JB |
943 | (XWINDOW (window))))) |
944 | : Qnil); | |
44fa5b1e JB |
945 | else if (! EQ (all_frames, Qt)) |
946 | all_frames = Qnil; | |
7ab12479 JB |
947 | |
948 | /* Do this loop at least once, to get the previous window, and perhaps | |
949 | again, if we hit the minibuffer and that is not acceptable. */ | |
950 | do | |
951 | { | |
952 | /* Find a window that actually has a previous one. This loop | |
953 | climbs up the tree. */ | |
265a9e55 JB |
954 | while (tem = XWINDOW (window)->prev, NILP (tem)) |
955 | if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
7ab12479 | 956 | window = tem; |
d5783c40 | 957 | else |
7ab12479 | 958 | { |
44fa5b1e JB |
959 | /* We have found the top window on the frame. |
960 | Which frames are acceptable? */ | |
961 | tem = WINDOW_FRAME (XWINDOW (window)); | |
962 | #ifdef MULTI_FRAME | |
963 | if (! NILP (all_frames)) | |
964 | tem = next_frame (tem, all_frames); | |
7ab12479 | 965 | #endif |
44fa5b1e | 966 | tem = FRAME_ROOT_WINDOW (XFRAME (tem)); |
d5783c40 | 967 | |
7ab12479 JB |
968 | break; |
969 | } | |
970 | ||
971 | window = tem; | |
972 | /* If we're in a combination window, find its last child and | |
973 | recurse on that. Otherwise, we've found the window we want. */ | |
974 | while (1) | |
975 | { | |
265a9e55 | 976 | if (!NILP (XWINDOW (window)->hchild)) |
7ab12479 | 977 | window = XWINDOW (window)->hchild; |
265a9e55 | 978 | else if (!NILP (XWINDOW (window)->vchild)) |
7ab12479 JB |
979 | window = XWINDOW (window)->vchild; |
980 | else break; | |
265a9e55 | 981 | while (tem = XWINDOW (window)->next, !NILP (tem)) |
7ab12479 JB |
982 | window = tem; |
983 | } | |
984 | } | |
d5783c40 JB |
985 | /* Which windows are acceptable? |
986 | Exit the loop and accept this window if | |
7ab12479 | 987 | this isn't a minibuffer window, or |
d5783c40 JB |
988 | we're accepting minibuffer windows, or |
989 | we've come all the way around and we're back at the original window. */ | |
7ab12479 | 990 | while (MINI_WINDOW_P (XWINDOW (window)) |
d5783c40 JB |
991 | && !EQ (minibuf, Qt) |
992 | && window != start_window); | |
7ab12479 JB |
993 | |
994 | return window; | |
995 | } | |
996 | ||
62c07cc7 | 997 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
44fa5b1e JB |
998 | "Select the ARG'th different window on this frame.\n\ |
999 | All windows on current frame are arranged in a cyclic order.\n\ | |
7ab12479 JB |
1000 | This command selects the window ARG steps away in that order.\n\ |
1001 | A negative ARG moves in the opposite order. If the optional second\n\ | |
44fa5b1e JB |
1002 | argument ALL_FRAMES is non-nil, cycle through all frames.") |
1003 | (n, all_frames) | |
1004 | register Lisp_Object n, all_frames; | |
7ab12479 JB |
1005 | { |
1006 | register int i; | |
1007 | register Lisp_Object w; | |
1008 | ||
1009 | CHECK_NUMBER (n, 0); | |
1010 | w = selected_window; | |
1011 | i = XINT (n); | |
1012 | ||
1013 | while (i > 0) | |
1014 | { | |
44fa5b1e | 1015 | w = Fnext_window (w, Qnil, all_frames); |
7ab12479 JB |
1016 | i--; |
1017 | } | |
1018 | while (i < 0) | |
1019 | { | |
44fa5b1e | 1020 | w = Fprevious_window (w, Qnil, all_frames); |
7ab12479 JB |
1021 | i++; |
1022 | } | |
1023 | Fselect_window (w); | |
1024 | return Qnil; | |
1025 | } | |
1026 | \f | |
1027 | /* Look at all windows, performing an operation specified by TYPE | |
1028 | with argument OBJ. | |
44fa5b1e JB |
1029 | If FRAMES is Qt, look at all frames, if Qnil, look at just the selected |
1030 | frame. If FRAMES is a frame, just look at windows on that frame. | |
7ab12479 JB |
1031 | If MINI is non-zero, perform the operation on minibuffer windows too. |
1032 | */ | |
1033 | ||
1034 | enum window_loop | |
1035 | { | |
1036 | WINDOW_LOOP_UNUSED, | |
1037 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
1038 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
1039 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
1040 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
1041 | GET_LARGEST_WINDOW, | |
1042 | UNSHOW_BUFFER, /* Arg is buffer */ | |
1043 | }; | |
1044 | ||
1045 | static Lisp_Object | |
44fa5b1e | 1046 | window_loop (type, obj, mini, frames) |
7ab12479 | 1047 | enum window_loop type; |
44fa5b1e | 1048 | register Lisp_Object obj, frames; |
7ab12479 JB |
1049 | int mini; |
1050 | { | |
1051 | register Lisp_Object w; | |
1052 | register Lisp_Object best_window; | |
1053 | register Lisp_Object next_window; | |
4b206065 | 1054 | register Lisp_Object last_window; |
44fa5b1e JB |
1055 | FRAME_PTR frame; |
1056 | ||
4b206065 | 1057 | #ifdef MULTI_FRAME |
44fa5b1e JB |
1058 | /* If we're only looping through windows on a particular frame, |
1059 | frame points to that frame. If we're looping through windows | |
1060 | on all frames, frame is 0. */ | |
1061 | if (FRAMEP (frames)) | |
1062 | frame = XFRAME (frames); | |
1063 | else if (NILP (frames)) | |
1064 | frame = selected_frame; | |
7ab12479 | 1065 | else |
44fa5b1e | 1066 | frame = 0; |
4b206065 JB |
1067 | #else |
1068 | frame = 0; | |
1069 | #endif | |
7ab12479 JB |
1070 | |
1071 | /* Pick a window to start with. */ | |
1072 | if (XTYPE (obj) == Lisp_Window) | |
4b206065 | 1073 | w = obj; |
44fa5b1e | 1074 | else if (frame) |
4b206065 | 1075 | w = FRAME_SELECTED_WINDOW (frame); |
7ab12479 | 1076 | else |
4b206065 JB |
1077 | w = FRAME_SELECTED_WINDOW (selected_frame); |
1078 | ||
1079 | /* Figure out the last window we're going to mess with. Since | |
1080 | Fnext_window, given the same options, is guaranteed to go in a | |
1081 | ring, we can just use Fprevious_window to find the last one. | |
1082 | ||
1083 | We can't just wait until we hit the first window again, because | |
1084 | it might be deleted. */ | |
1085 | ||
1086 | #ifdef MULTI_FRAME | |
1087 | if (frame) | |
1088 | last_window = Fprevious_window (w, (mini ? Qt : Qnil), Qlambda); | |
1089 | else | |
1090 | #endif /* MULTI_FRAME */ | |
1091 | /* We know frame is 0, so we're looping through all frames. | |
1092 | Or we know this isn't a MULTI_FRAME Emacs, so who cares? */ | |
1093 | last_window = Fprevious_window (w, mini ? Qt : Qnil, Qt); | |
7ab12479 | 1094 | |
7ab12479 | 1095 | best_window = Qnil; |
4b206065 | 1096 | for (;;) |
7ab12479 JB |
1097 | { |
1098 | /* Pick the next window now, since some operations will delete | |
1099 | the current window. */ | |
44fa5b1e JB |
1100 | #ifdef MULTI_FRAME |
1101 | if (frame) | |
d5783c40 | 1102 | next_window = Fnext_window (w, (mini ? Qt : Qnil), Qlambda); |
7ab12479 | 1103 | else |
4b206065 | 1104 | #endif /* MULTI_FRAME */ |
44fa5b1e JB |
1105 | /* We know frame is 0, so we're looping through all frames. |
1106 | Or we know this isn't a MULTI_FRAME Emacs, so who cares? */ | |
7ab12479 JB |
1107 | next_window = Fnext_window (w, mini ? Qt : Qnil, Qt); |
1108 | ||
1109 | if (!MINI_WINDOW_P (XWINDOW (w)) | |
1110 | || (mini && minibuf_level > 0)) | |
1111 | switch (type) | |
1112 | { | |
1113 | case GET_BUFFER_WINDOW: | |
1114 | #if 0 | |
44fa5b1e JB |
1115 | /* Ignore invisible and iconified frames. */ |
1116 | if (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (w)))) | |
1117 | || FRAME_ICONIFIED_P (XFRAME (WINDOW_FRAME (XWINDOW (w))))) | |
7ab12479 JB |
1118 | break; |
1119 | #endif | |
1120 | if (XBUFFER (XWINDOW (w)->buffer) == XBUFFER (obj)) | |
1121 | return w; | |
1122 | break; | |
1123 | ||
1124 | case GET_LRU_WINDOW: | |
1125 | /* t as arg means consider only full-width windows */ | |
e5d77022 | 1126 | if (!NILP (obj) && XFASTINT (XWINDOW (w)->width) |
44fa5b1e | 1127 | != FRAME_WIDTH (frame)) |
7ab12479 JB |
1128 | break; |
1129 | #if 0 | |
44fa5b1e JB |
1130 | /* Ignore invisible and iconified frames. */ |
1131 | if (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (w)))) | |
1132 | || FRAME_ICONIFIED_P (XFRAME (WINDOW_FRAME (XWINDOW (w))))) | |
7ab12479 JB |
1133 | break; |
1134 | #endif | |
1135 | /* Ignore dedicated windows and minibuffers. */ | |
1136 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1137 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 | 1138 | break; |
265a9e55 | 1139 | if (NILP (best_window) |
7ab12479 JB |
1140 | || (XFASTINT (XWINDOW (best_window)->use_time) |
1141 | > XFASTINT (XWINDOW (w)->use_time))) | |
1142 | best_window = w; | |
1143 | break; | |
1144 | ||
1145 | case DELETE_OTHER_WINDOWS: | |
1146 | if (XWINDOW (w) != XWINDOW (obj)) | |
1147 | Fdelete_window (w); | |
1148 | break; | |
1149 | ||
1150 | case DELETE_BUFFER_WINDOWS: | |
1151 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1152 | { | |
1153 | /* If we're deleting the buffer displayed in the only window | |
44fa5b1e | 1154 | on the frame, find a new buffer to display there. */ |
265a9e55 | 1155 | if (NILP (XWINDOW (w)->parent)) |
7ab12479 | 1156 | { |
faa64cf7 | 1157 | Lisp_Object new_buffer = Fother_buffer (obj, Qnil); |
265a9e55 | 1158 | if (NILP (new_buffer)) |
7ab12479 JB |
1159 | new_buffer |
1160 | = Fget_buffer_create (build_string ("*scratch*")); | |
1161 | Fset_window_buffer (w, new_buffer); | |
1162 | Fset_buffer (XWINDOW (w)->buffer); | |
1163 | } | |
1164 | else | |
1165 | Fdelete_window (w); | |
1166 | } | |
1167 | break; | |
1168 | ||
1169 | case GET_LARGEST_WINDOW: | |
1170 | #if 0 | |
44fa5b1e JB |
1171 | /* Ignore invisible and iconified frames. */ |
1172 | if (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (w)))) | |
1173 | || FRAME_ICONIFIED_P (XFRAME (WINDOW_FRAME (XWINDOW (w))))) | |
7ab12479 JB |
1174 | break; |
1175 | #endif | |
1176 | /* Ignore dedicated windows and minibuffers. */ | |
1177 | if (MINI_WINDOW_P (XWINDOW (w)) | |
265a9e55 | 1178 | || !NILP (XWINDOW (w)->dedicated)) |
7ab12479 JB |
1179 | break; |
1180 | { | |
1181 | struct window *best_window_ptr = XWINDOW (best_window); | |
1182 | struct window *w_ptr = XWINDOW (w); | |
265a9e55 | 1183 | if (NILP (best_window) || |
7ab12479 JB |
1184 | (XFASTINT (w_ptr->height) * XFASTINT (w_ptr->width)) |
1185 | > (XFASTINT (best_window_ptr->height) | |
1186 | * XFASTINT (best_window_ptr->width))) | |
1187 | best_window = w; | |
1188 | } | |
1189 | break; | |
1190 | ||
1191 | case UNSHOW_BUFFER: | |
1192 | if (EQ (XWINDOW (w)->buffer, obj)) | |
1193 | { | |
1194 | /* Find another buffer to show in this window. */ | |
faa64cf7 | 1195 | Lisp_Object another_buffer = Fother_buffer (obj, Qnil); |
265a9e55 | 1196 | if (NILP (another_buffer)) |
7ab12479 JB |
1197 | another_buffer |
1198 | = Fget_buffer_create (build_string ("*scratch*")); | |
1199 | Fset_window_buffer (w, another_buffer); | |
1200 | if (EQ (w, selected_window)) | |
1201 | Fset_buffer (XWINDOW (w)->buffer); | |
1202 | } | |
1203 | break; | |
1204 | } | |
4b206065 JB |
1205 | |
1206 | if (EQ (w, last_window)) | |
1207 | break; | |
1208 | ||
7ab12479 JB |
1209 | w = next_window; |
1210 | } | |
7ab12479 JB |
1211 | |
1212 | return best_window; | |
1213 | } | |
605be8af | 1214 | |
7ab12479 JB |
1215 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 1, 0, |
1216 | "Return the window least recently selected or used for display.\n\ | |
44fa5b1e JB |
1217 | If optional argument FRAMES is t, search all frames. If FRAME is a\n\ |
1218 | frame, search only that frame.\n") | |
1219 | (frames) | |
1220 | Lisp_Object frames; | |
7ab12479 JB |
1221 | { |
1222 | register Lisp_Object w; | |
1223 | /* First try for a window that is full-width */ | |
44fa5b1e | 1224 | w = window_loop (GET_LRU_WINDOW, Qt, 0, frames); |
265a9e55 | 1225 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
1226 | return w; |
1227 | /* If none of them, try the rest */ | |
44fa5b1e | 1228 | return window_loop (GET_LRU_WINDOW, Qnil, 0, frames); |
7ab12479 JB |
1229 | } |
1230 | ||
1231 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 1, 0, | |
1232 | "Return the largest window in area.\n\ | |
44fa5b1e JB |
1233 | If optional argument FRAMES is t, search all frames. If FRAME is a\n\ |
1234 | frame, search only that frame.\n") | |
1235 | (frame) | |
1236 | Lisp_Object frame; | |
7ab12479 JB |
1237 | { |
1238 | return window_loop (GET_LARGEST_WINDOW, Qnil, 0, | |
44fa5b1e | 1239 | frame); |
7ab12479 JB |
1240 | } |
1241 | ||
1242 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
1243 | "Return a window currently displaying BUFFER, or nil if none.\n\ | |
44fa5b1e JB |
1244 | If optional argument FRAMES is t, search all frames. If FRAME is a\n\ |
1245 | frame, search only that frame.\n") | |
1246 | (buffer, frame) | |
1247 | Lisp_Object buffer, frame; | |
7ab12479 JB |
1248 | { |
1249 | buffer = Fget_buffer (buffer); | |
1250 | if (XTYPE (buffer) == Lisp_Buffer) | |
44fa5b1e | 1251 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
1252 | else |
1253 | return Qnil; | |
1254 | } | |
1255 | ||
1256 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
1257 | 0, 1, "", | |
44fa5b1e JB |
1258 | "Make WINDOW (or the selected window) fill its frame.\n\ |
1259 | Only the frame WINDOW is on is affected.") | |
7ab12479 JB |
1260 | (window) |
1261 | Lisp_Object window; | |
1262 | { | |
1263 | struct window *w; | |
1264 | int opoint = point; | |
1265 | struct buffer *obuf = current_buffer; | |
1266 | int top; | |
1267 | ||
265a9e55 | 1268 | if (NILP (window)) |
7ab12479 JB |
1269 | window = selected_window; |
1270 | else | |
605be8af | 1271 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1272 | |
1273 | w = XWINDOW (window); | |
1274 | top = XFASTINT (w->top); | |
1275 | ||
44fa5b1e | 1276 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME(w)); |
7ab12479 JB |
1277 | |
1278 | Fset_buffer (w->buffer); | |
1279 | SET_PT (marker_position (w->start)); | |
1280 | Frecenter (make_number (top)); | |
1281 | ||
1282 | set_buffer_internal (obuf); | |
1283 | SET_PT (opoint); | |
1284 | return Qnil; | |
1285 | } | |
1286 | ||
1287 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
1288 | 1, 1, "bDelete windows on (buffer): ", | |
1289 | "Delete all windows showing BUFFER.") | |
1290 | (buffer) | |
1291 | Lisp_Object buffer; | |
1292 | { | |
265a9e55 | 1293 | if (!NILP (buffer)) |
7ab12479 JB |
1294 | { |
1295 | buffer = Fget_buffer (buffer); | |
1296 | CHECK_BUFFER (buffer, 0); | |
1297 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, Qt); | |
1298 | } | |
1299 | return Qnil; | |
1300 | } | |
1301 | ||
1302 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
1303 | Sreplace_buffer_in_windows, | |
1304 | 1, 1, "bReplace buffer in windows: ", | |
1305 | "Replace BUFFER with some other buffer in all windows showing it.") | |
1306 | (buffer) | |
1307 | Lisp_Object buffer; | |
1308 | { | |
265a9e55 | 1309 | if (!NILP (buffer)) |
7ab12479 JB |
1310 | { |
1311 | buffer = Fget_buffer (buffer); | |
1312 | CHECK_BUFFER (buffer, 0); | |
1313 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); | |
1314 | } | |
1315 | return Qnil; | |
1316 | } | |
1317 | \f | |
1318 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
1319 | |
1320 | /* The smallest acceptable dimensions for a window. Anything smaller | |
1321 | might crash Emacs. */ | |
1322 | #define MIN_SAFE_WINDOW_WIDTH (2) | |
1323 | #define MIN_SAFE_WINDOW_HEIGHT (2) | |
1324 | ||
1325 | /* Make sure that window_min_height and window_min_width are | |
1326 | not too small; if they are, set them to safe minima. */ | |
1327 | ||
1328 | static void | |
1329 | check_min_window_sizes () | |
1330 | { | |
1331 | /* Smaller values might permit a crash. */ | |
1332 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
1333 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
1334 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
1335 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
1336 | } | |
1337 | ||
1338 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
1339 | minimum allowable size. */ | |
605be8af | 1340 | void |
a481b3ea | 1341 | check_frame_size (frame, rows, cols) |
605be8af JB |
1342 | FRAME_PTR frame; |
1343 | int *rows, *cols; | |
a481b3ea JB |
1344 | { |
1345 | /* For height, we have to see whether the frame has a minibuffer, and | |
1346 | whether it wants a mode line. */ | |
1347 | int min_height = | |
1348 | ((FRAME_MINIBUF_ONLY_P (frame) | |
1349 | || ! FRAME_HAS_MINIBUF_P (frame)) | |
1350 | ? MIN_SAFE_WINDOW_HEIGHT | |
1351 | : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); | |
1352 | ||
1353 | if (*rows < min_height) | |
1354 | *rows = min_height; | |
1355 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
1356 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
1357 | } | |
1358 | ||
7ab12479 JB |
1359 | /* Normally the window is deleted if it gets too small. |
1360 | nodelete nonzero means do not do this. | |
1361 | (The caller should check later and do so if appropriate) */ | |
1362 | ||
1363 | set_window_height (window, height, nodelete) | |
1364 | Lisp_Object window; | |
1365 | int height; | |
1366 | int nodelete; | |
1367 | { | |
1368 | register struct window *w = XWINDOW (window); | |
1369 | register struct window *c; | |
1370 | int oheight = XFASTINT (w->height); | |
1371 | int top, pos, lastbot, opos, lastobot; | |
1372 | Lisp_Object child; | |
1373 | ||
a481b3ea JB |
1374 | check_min_window_sizes (); |
1375 | ||
7ab12479 | 1376 | if (!nodelete |
265a9e55 | 1377 | && ! NILP (w->parent) |
7ab12479 JB |
1378 | && height < window_min_height) |
1379 | { | |
1380 | Fdelete_window (window); | |
1381 | return; | |
1382 | } | |
1383 | ||
1384 | XFASTINT (w->last_modified) = 0; | |
1385 | windows_or_buffers_changed++; | |
1386 | XFASTINT (w->height) = height; | |
265a9e55 | 1387 | if (!NILP (w->hchild)) |
7ab12479 | 1388 | { |
265a9e55 | 1389 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1390 | { |
1391 | XWINDOW (child)->top = w->top; | |
1392 | set_window_height (child, height, nodelete); | |
1393 | } | |
1394 | } | |
265a9e55 | 1395 | else if (!NILP (w->vchild)) |
7ab12479 JB |
1396 | { |
1397 | lastbot = top = XFASTINT (w->top); | |
1398 | lastobot = 0; | |
265a9e55 | 1399 | for (child = w->vchild; !NILP (child); child = c->next) |
7ab12479 JB |
1400 | { |
1401 | c = XWINDOW (child); | |
1402 | ||
1403 | opos = lastobot + XFASTINT (c->height); | |
1404 | ||
1405 | XFASTINT (c->top) = lastbot; | |
1406 | ||
1407 | pos = (((opos * height) << 1) + oheight) / (oheight << 1); | |
1408 | ||
1409 | /* Avoid confusion: inhibit deletion of child if becomes too small */ | |
1410 | set_window_height (child, pos + top - lastbot, 1); | |
1411 | ||
1412 | /* Now advance child to next window, | |
1413 | and set lastbot if child was not just deleted. */ | |
1414 | lastbot = pos + top; | |
1415 | lastobot = opos; | |
1416 | } | |
1417 | /* Now delete any children that became too small. */ | |
1418 | if (!nodelete) | |
265a9e55 | 1419 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1420 | { |
1421 | set_window_height (child, XINT (XWINDOW (child)->height), 0); | |
1422 | } | |
1423 | } | |
1424 | } | |
1425 | ||
1426 | /* Recursively set width of WINDOW and its inferiors. */ | |
1427 | ||
1428 | set_window_width (window, width, nodelete) | |
1429 | Lisp_Object window; | |
1430 | int width; | |
1431 | int nodelete; | |
1432 | { | |
1433 | register struct window *w = XWINDOW (window); | |
1434 | register struct window *c; | |
1435 | int owidth = XFASTINT (w->width); | |
1436 | int left, pos, lastright, opos, lastoright; | |
1437 | Lisp_Object child; | |
1438 | ||
1439 | if (!nodelete && width < window_min_width) | |
1440 | { | |
1441 | Fdelete_window (window); | |
1442 | return; | |
1443 | } | |
1444 | ||
1445 | XFASTINT (w->last_modified) = 0; | |
1446 | windows_or_buffers_changed++; | |
1447 | XFASTINT (w->width) = width; | |
265a9e55 | 1448 | if (!NILP (w->vchild)) |
7ab12479 | 1449 | { |
265a9e55 | 1450 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1451 | { |
1452 | XWINDOW (child)->left = w->left; | |
1453 | set_window_width (child, width, nodelete); | |
1454 | } | |
1455 | } | |
265a9e55 | 1456 | else if (!NILP (w->hchild)) |
7ab12479 JB |
1457 | { |
1458 | lastright = left = XFASTINT (w->left); | |
1459 | lastoright = 0; | |
265a9e55 | 1460 | for (child = w->hchild; !NILP (child); child = c->next) |
7ab12479 JB |
1461 | { |
1462 | c = XWINDOW (child); | |
1463 | ||
1464 | opos = lastoright + XFASTINT (c->width); | |
1465 | ||
1466 | XFASTINT (c->left) = lastright; | |
1467 | ||
1468 | pos = (((opos * width) << 1) + owidth) / (owidth << 1); | |
1469 | ||
1470 | /* Inhibit deletion for becoming too small */ | |
1471 | set_window_width (child, pos + left - lastright, 1); | |
1472 | ||
1473 | /* Now advance child to next window, | |
1474 | and set lastright if child was not just deleted. */ | |
1475 | lastright = pos + left, lastoright = opos; | |
1476 | } | |
1477 | /* Delete children that became too small */ | |
1478 | if (!nodelete) | |
265a9e55 | 1479 | for (child = w->hchild; !NILP (child); child = XWINDOW (child)->next) |
7ab12479 JB |
1480 | { |
1481 | set_window_width (child, XINT (XWINDOW (child)->width), 0); | |
1482 | } | |
1483 | } | |
1484 | } | |
1485 | \f | |
1d8d96fa | 1486 | int window_select_count; |
7ab12479 JB |
1487 | |
1488 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 2, 0, | |
1489 | "Make WINDOW display BUFFER as its contents.\n\ | |
1490 | BUFFER can be a buffer or buffer name.") | |
1491 | (window, buffer) | |
1492 | register Lisp_Object window, buffer; | |
1493 | { | |
1494 | register Lisp_Object tem; | |
1495 | register struct window *w = decode_window (window); | |
1496 | ||
1497 | buffer = Fget_buffer (buffer); | |
1498 | CHECK_BUFFER (buffer, 1); | |
1499 | ||
265a9e55 | 1500 | if (NILP (XBUFFER (buffer)->name)) |
7ab12479 JB |
1501 | error ("Attempt to display deleted buffer"); |
1502 | ||
1503 | tem = w->buffer; | |
265a9e55 | 1504 | if (NILP (tem)) |
7ab12479 JB |
1505 | error ("Window is deleted"); |
1506 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
1507 | is first being set up. */ | |
1508 | { | |
265a9e55 | 1509 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) |
7ab12479 JB |
1510 | error ("Window is dedicated to %s\n", tem); |
1511 | ||
1512 | unshow_buffer (w); | |
1513 | } | |
1514 | ||
1515 | w->buffer = buffer; | |
1516 | Fset_marker (w->pointm, | |
1517 | make_number (BUF_PT (XBUFFER (buffer))), | |
1518 | buffer); | |
1519 | set_marker_restricted (w->start, | |
1520 | make_number (XBUFFER (buffer)->last_window_start), | |
1521 | buffer); | |
1522 | w->start_at_line_beg = Qnil; | |
1523 | XFASTINT (w->last_modified) = 0; | |
1524 | windows_or_buffers_changed++; | |
1525 | if (EQ (window, selected_window)) | |
1526 | Fset_buffer (buffer); | |
1527 | ||
1528 | return Qnil; | |
1529 | } | |
1530 | ||
1531 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 1, 0, | |
1532 | "Select WINDOW. Most editing will apply to WINDOW's buffer.\n\ | |
1533 | The main editor command loop selects the buffer of the selected window\n\ | |
1534 | before each command.") | |
1535 | (window) | |
1536 | register Lisp_Object window; | |
1537 | { | |
1538 | register struct window *w; | |
1539 | register struct window *ow = XWINDOW (selected_window); | |
1540 | ||
605be8af | 1541 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1542 | |
1543 | w = XWINDOW (window); | |
1544 | ||
265a9e55 | 1545 | if (NILP (w->buffer)) |
7ab12479 JB |
1546 | error ("Trying to select deleted window or non-leaf window"); |
1547 | ||
1548 | XFASTINT (w->use_time) = ++window_select_count; | |
1549 | if (EQ (window, selected_window)) | |
1550 | return window; | |
1551 | ||
1552 | Fset_marker (ow->pointm, make_number (BUF_PT (XBUFFER (ow->buffer))), | |
1553 | ow->buffer); | |
1554 | ||
1555 | selected_window = window; | |
44fa5b1e JB |
1556 | #ifdef MULTI_FRAME |
1557 | if (XFRAME (WINDOW_FRAME (w)) != selected_frame) | |
7ab12479 | 1558 | { |
44fa5b1e JB |
1559 | XFRAME (WINDOW_FRAME (w))->selected_window = window; |
1560 | Fselect_frame (WINDOW_FRAME (w), Qnil); | |
7ab12479 JB |
1561 | } |
1562 | else | |
44fa5b1e | 1563 | selected_frame->selected_window = window; |
7ab12479 JB |
1564 | #endif |
1565 | ||
1566 | record_buffer (w->buffer); | |
1567 | Fset_buffer (w->buffer); | |
1568 | ||
1569 | /* Go to the point recorded in the window. | |
1570 | This is important when the buffer is in more | |
1571 | than one window. It also matters when | |
1572 | redisplay_window has altered point after scrolling, | |
1573 | because it makes the change only in the window. */ | |
1574 | { | |
1575 | register int new_point = marker_position (w->pointm); | |
1576 | if (new_point < BEGV) | |
1577 | SET_PT (BEGV); | |
1578 | if (new_point > ZV) | |
1579 | SET_PT (ZV); | |
1580 | else | |
1581 | SET_PT (new_point); | |
1582 | } | |
1583 | ||
1584 | windows_or_buffers_changed++; | |
1585 | return window; | |
1586 | } | |
1587 | ||
35aaf00c RM |
1588 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 2, |
1589 | "BDisplay buffer:\nP", | |
7ab12479 JB |
1590 | "Make BUFFER appear in some window but don't select it.\n\ |
1591 | BUFFER can be a buffer or a buffer name.\n\ | |
1592 | If BUFFER is shown already in some window, just use that one,\n\ | |
1593 | unless the window is the selected window and the optional second\n\ | |
1594 | argument NOT_THIS_WINDOW is non-nil.\n\ | |
1595 | Returns the window displaying BUFFER.") | |
1596 | (buffer, not_this_window) | |
1597 | register Lisp_Object buffer, not_this_window; | |
1598 | { | |
1599 | register Lisp_Object window; | |
1600 | ||
1601 | buffer = Fget_buffer (buffer); | |
1602 | CHECK_BUFFER (buffer, 0); | |
1603 | ||
265a9e55 | 1604 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
1605 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
1606 | ||
265a9e55 | 1607 | if (NILP (not_this_window) |
7ab12479 JB |
1608 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
1609 | return selected_window; | |
1610 | ||
1611 | window = Fget_buffer_window (buffer, Qnil); | |
265a9e55 JB |
1612 | if (!NILP (window) |
1613 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
7ab12479 JB |
1614 | return window; |
1615 | ||
44fa5b1e JB |
1616 | #ifdef MULTI_FRAME |
1617 | /* If there are no frames open that have more than a minibuffer, | |
1618 | we need to create a new frame. */ | |
1619 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 JB |
1620 | { |
1621 | window | |
44fa5b1e | 1622 | = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
7ab12479 JB |
1623 | Fset_window_buffer (window, buffer); |
1624 | #if 0 | |
44fa5b1e | 1625 | Fselect_frame (XWINDOW (window)->frame, Qnil); |
7ab12479 JB |
1626 | #endif |
1627 | return window; | |
1628 | } | |
44fa5b1e | 1629 | #endif /* MULTI_FRAME */ |
7ab12479 | 1630 | |
43bad991 | 1631 | if (pop_up_windows |
44fa5b1e JB |
1632 | #ifdef MULTI_FRAME |
1633 | || FRAME_MINIBUF_ONLY_P (selected_frame) | |
43bad991 JB |
1634 | #endif |
1635 | ) | |
7ab12479 | 1636 | { |
44fa5b1e | 1637 | Lisp_Object frames = Qnil; |
43bad991 | 1638 | |
44fa5b1e JB |
1639 | #ifdef MULTI_FRAME |
1640 | if (FRAME_MINIBUF_ONLY_P (selected_frame)) | |
1641 | XSET (frames, Lisp_Frame, last_nonminibuf_frame); | |
7ab12479 JB |
1642 | #endif |
1643 | /* Don't try to create a window if would get an error */ | |
1644 | if (split_height_threshold < window_min_height << 1) | |
1645 | split_height_threshold = window_min_height << 1; | |
1646 | ||
44fa5b1e | 1647 | window = Fget_largest_window (frames); |
7ab12479 | 1648 | |
265a9e55 | 1649 | if (!NILP (window) |
7ab12479 JB |
1650 | && window_height (window) >= split_height_threshold |
1651 | && | |
1652 | (XFASTINT (XWINDOW (window)->width) | |
44fa5b1e | 1653 | == FRAME_WIDTH (XFRAME (WINDOW_FRAME (XWINDOW (window)))))) |
7ab12479 JB |
1654 | window = Fsplit_window (window, Qnil, Qnil); |
1655 | else | |
1656 | { | |
44fa5b1e | 1657 | window = Fget_lru_window (frames); |
7ab12479 JB |
1658 | if ((EQ (window, selected_window) |
1659 | || EQ (XWINDOW (window)->parent, Qnil)) | |
1660 | && window_height (window) >= window_min_height << 1) | |
1661 | window = Fsplit_window (window, Qnil, Qnil); | |
1662 | } | |
1663 | } | |
1664 | else | |
1665 | window = Fget_lru_window (Qnil); | |
1666 | ||
1667 | Fset_window_buffer (window, buffer); | |
1668 | return window; | |
1669 | } | |
1670 | ||
1671 | void | |
1672 | temp_output_buffer_show (buf) | |
1673 | register Lisp_Object buf; | |
1674 | { | |
1675 | register struct buffer *old = current_buffer; | |
1676 | register Lisp_Object window; | |
1677 | register struct window *w; | |
1678 | ||
1679 | Fset_buffer (buf); | |
1680 | XBUFFER (buf)->save_modified = MODIFF; | |
1681 | BEGV = BEG; | |
1682 | ZV = Z; | |
1683 | SET_PT (BEG); | |
1684 | clip_changed = 1; | |
1685 | set_buffer_internal (old); | |
1686 | ||
1687 | if (!EQ (Vtemp_buffer_show_function, Qnil)) | |
1688 | call1 (Vtemp_buffer_show_function, buf); | |
1689 | else | |
1690 | { | |
1691 | window = Fdisplay_buffer (buf, Qnil); | |
1692 | ||
44fa5b1e JB |
1693 | #ifdef MULTI_FRAME |
1694 | if (XFRAME (XWINDOW (window)->frame) != selected_frame) | |
1695 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
1696 | #endif /* MULTI_FRAME */ | |
7ab12479 JB |
1697 | Vminibuf_scroll_window = window; |
1698 | w = XWINDOW (window); | |
1699 | XFASTINT (w->hscroll) = 0; | |
1700 | set_marker_restricted (w->start, make_number (1), buf); | |
1701 | set_marker_restricted (w->pointm, make_number (1), buf); | |
1702 | } | |
1703 | } | |
1704 | \f | |
1705 | static | |
1706 | make_dummy_parent (window) | |
1707 | Lisp_Object window; | |
1708 | { | |
1709 | register Lisp_Object old, new; | |
1710 | register struct window *o, *p; | |
1711 | ||
1712 | old = window; | |
1713 | XSETTYPE (old, Lisp_Vector); | |
1714 | new = Fcopy_sequence (old); | |
1715 | XSETTYPE (new, Lisp_Window); | |
1716 | ||
1717 | o = XWINDOW (old); | |
1718 | p = XWINDOW (new); | |
1719 | XFASTINT (p->sequence_number) = ++sequence_number; | |
1720 | ||
1721 | /* Put new into window structure in place of window */ | |
1722 | replace_window (window, new); | |
1723 | ||
1724 | o->next = Qnil; | |
1725 | o->prev = Qnil; | |
1726 | o->vchild = Qnil; | |
1727 | o->hchild = Qnil; | |
1728 | o->parent = new; | |
1729 | ||
1730 | p->start = Qnil; | |
1731 | p->pointm = Qnil; | |
1732 | p->buffer = Qnil; | |
1733 | } | |
1734 | ||
1735 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
1736 | "Split WINDOW, putting SIZE lines in the first of the pair.\n\ | |
1737 | WINDOW defaults to selected one and SIZE to half its size.\n\ | |
1738 | If optional third arg HOR-FLAG is non-nil, split side by side\n\ | |
1739 | and put SIZE columns in the first of the pair.") | |
1740 | (window, chsize, horflag) | |
1741 | Lisp_Object window, chsize, horflag; | |
1742 | { | |
1743 | register Lisp_Object new; | |
1744 | register struct window *o, *p; | |
1745 | register int size; | |
1746 | ||
265a9e55 | 1747 | if (NILP (window)) |
7ab12479 JB |
1748 | window = selected_window; |
1749 | else | |
605be8af | 1750 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
1751 | |
1752 | o = XWINDOW (window); | |
1753 | ||
265a9e55 | 1754 | if (NILP (chsize)) |
7ab12479 | 1755 | { |
265a9e55 | 1756 | if (!NILP (horflag)) |
7ab12479 JB |
1757 | /* Round odd size up, since this is for the left-hand window, |
1758 | and it will lose a column for the separators. */ | |
1759 | size = ((XFASTINT (o->width) + 1) & -2) >> 1; | |
1760 | else | |
1761 | size = XFASTINT (o->height) >> 1; | |
1762 | } | |
1763 | else | |
1764 | { | |
1765 | CHECK_NUMBER (chsize, 1); | |
1766 | size = XINT (chsize); | |
1767 | } | |
1768 | ||
1769 | if (MINI_WINDOW_P (o)) | |
1770 | error ("Attempt to split minibuffer window"); | |
44fa5b1e JB |
1771 | else if (FRAME_NO_SPLIT_P (XFRAME (WINDOW_FRAME (o)))) |
1772 | error ("Attempt to split unsplittable frame"); | |
7ab12479 | 1773 | |
a481b3ea | 1774 | check_min_window_sizes (); |
7ab12479 | 1775 | |
265a9e55 | 1776 | if (NILP (horflag)) |
7ab12479 JB |
1777 | { |
1778 | if (size < window_min_height | |
1779 | || size + window_min_height > XFASTINT (o->height)) | |
1780 | args_out_of_range_3 (window, chsize, horflag); | |
265a9e55 JB |
1781 | if (NILP (o->parent) |
1782 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
1783 | { |
1784 | make_dummy_parent (window); | |
1785 | new = o->parent; | |
1786 | XWINDOW (new)->vchild = window; | |
1787 | } | |
1788 | } | |
1789 | else | |
1790 | { | |
1791 | if (size < window_min_width | |
1792 | || size + window_min_width > XFASTINT (o->width)) | |
1793 | args_out_of_range_3 (window, chsize, horflag); | |
265a9e55 JB |
1794 | if (NILP (o->parent) |
1795 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
1796 | { |
1797 | make_dummy_parent (window); | |
1798 | new = o->parent; | |
1799 | XWINDOW (new)->hchild = window; | |
1800 | } | |
1801 | } | |
1802 | ||
1803 | /* Now we know that window's parent is a vertical combination | |
1804 | if we are dividing vertically, or a horizontal combination | |
1805 | if we are making side-by-side windows */ | |
1806 | ||
1807 | windows_or_buffers_changed++; | |
1808 | new = make_window (); | |
1809 | p = XWINDOW (new); | |
1810 | ||
44fa5b1e | 1811 | p->frame = o->frame; |
7ab12479 | 1812 | p->next = o->next; |
265a9e55 | 1813 | if (!NILP (p->next)) |
7ab12479 JB |
1814 | XWINDOW (p->next)->prev = new; |
1815 | p->prev = window; | |
1816 | o->next = new; | |
1817 | p->parent = o->parent; | |
1818 | p->buffer = Qt; | |
1819 | ||
1820 | Fset_window_buffer (new, o->buffer); | |
1821 | ||
44fa5b1e | 1822 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 1823 | |
265a9e55 | 1824 | if (!NILP (horflag)) |
7ab12479 JB |
1825 | { |
1826 | p->height = o->height; | |
1827 | p->top = o->top; | |
1828 | XFASTINT (p->width) = XFASTINT (o->width) - size; | |
1829 | XFASTINT (o->width) = size; | |
1830 | XFASTINT (p->left) = XFASTINT (o->left) + size; | |
1831 | } | |
1832 | else | |
1833 | { | |
1834 | p->left = o->left; | |
1835 | p->width = o->width; | |
1836 | XFASTINT (p->height) = XFASTINT (o->height) - size; | |
1837 | XFASTINT (o->height) = size; | |
1838 | XFASTINT (p->top) = XFASTINT (o->top) + size; | |
1839 | } | |
1840 | ||
1841 | return new; | |
1842 | } | |
1843 | \f | |
1844 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", | |
1845 | "Make current window ARG lines bigger.\n\ | |
1846 | From program, optional second arg non-nil means grow sideways ARG columns.") | |
1847 | (n, side) | |
1848 | register Lisp_Object n, side; | |
1849 | { | |
1850 | CHECK_NUMBER (n, 0); | |
265a9e55 | 1851 | change_window_height (XINT (n), !NILP (side)); |
7ab12479 JB |
1852 | return Qnil; |
1853 | } | |
1854 | ||
1855 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", | |
1856 | "Make current window ARG lines smaller.\n\ | |
1857 | From program, optional second arg non-nil means shrink sideways ARG columns.") | |
1858 | (n, side) | |
1859 | register Lisp_Object n, side; | |
1860 | { | |
1861 | CHECK_NUMBER (n, 0); | |
265a9e55 | 1862 | change_window_height (-XINT (n), !NILP (side)); |
7ab12479 JB |
1863 | return Qnil; |
1864 | } | |
1865 | ||
1866 | int | |
1867 | window_height (window) | |
1868 | Lisp_Object window; | |
1869 | { | |
1870 | register struct window *p = XWINDOW (window); | |
1871 | return XFASTINT (p->height); | |
1872 | } | |
1873 | ||
1874 | int | |
1875 | window_width (window) | |
1876 | Lisp_Object window; | |
1877 | { | |
1878 | register struct window *p = XWINDOW (window); | |
1879 | return XFASTINT (p->width); | |
1880 | } | |
1881 | ||
05c2896a JB |
1882 | #define MINSIZE(w) \ |
1883 | (widthflag \ | |
1884 | ? window_min_width \ | |
1885 | : (MINI_WINDOW_P (XWINDOW (w)) ? 1 : window_min_height)) | |
7ab12479 JB |
1886 | |
1887 | #define CURBEG(w) \ | |
05c2896a | 1888 | *(widthflag ? (int *) &(XWINDOW (w)->left) : (int *) &(XWINDOW (w)->top)) |
7ab12479 JB |
1889 | |
1890 | #define CURSIZE(w) \ | |
05c2896a | 1891 | *(widthflag ? (int *) &(XWINDOW (w)->width) : (int *) &(XWINDOW (w)->height)) |
7ab12479 JB |
1892 | |
1893 | /* Unlike set_window_height, this function | |
1894 | also changes the heights of the siblings so as to | |
1895 | keep everything consistent. */ | |
1896 | ||
1897 | change_window_height (delta, widthflag) | |
1898 | register int delta; | |
1899 | int widthflag; | |
1900 | { | |
1901 | register Lisp_Object parent; | |
1902 | Lisp_Object window; | |
1903 | register struct window *p; | |
1904 | int *sizep; | |
1905 | int (*sizefun) () = widthflag ? window_width : window_height; | |
1906 | register int (*setsizefun) () = (widthflag | |
1907 | ? set_window_width | |
1908 | : set_window_height); | |
1909 | ||
a481b3ea | 1910 | check_min_window_sizes (); |
7ab12479 JB |
1911 | |
1912 | window = selected_window; | |
1913 | while (1) | |
1914 | { | |
1915 | p = XWINDOW (window); | |
1916 | parent = p->parent; | |
265a9e55 | 1917 | if (NILP (parent)) |
7ab12479 JB |
1918 | { |
1919 | if (widthflag) | |
1920 | error ("No other window to side of this one"); | |
1921 | break; | |
1922 | } | |
265a9e55 JB |
1923 | if (widthflag ? !NILP (XWINDOW (parent)->hchild) |
1924 | : !NILP (XWINDOW (parent)->vchild)) | |
7ab12479 JB |
1925 | break; |
1926 | window = parent; | |
1927 | } | |
1928 | ||
05c2896a | 1929 | sizep = &CURSIZE (window); |
7ab12479 | 1930 | |
05c2896a | 1931 | if (*sizep + delta < MINSIZE (window)) |
7ab12479 JB |
1932 | { |
1933 | Fdelete_window (window); | |
1934 | return; | |
1935 | } | |
1936 | ||
1937 | { | |
1938 | register int maxdelta; | |
7ab12479 | 1939 | |
265a9e55 JB |
1940 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - *sizep |
1941 | : !NILP (p->next) ? (*sizefun) (p->next) - MINSIZE (p->next) | |
1942 | : !NILP (p->prev) ? (*sizefun) (p->prev) - MINSIZE (p->prev) | |
44fa5b1e JB |
1943 | /* This is a frame with only one window, a minibuffer-only |
1944 | or a minibufferless frame. */ | |
d5783c40 | 1945 | : (delta = 0)); |
7ab12479 JB |
1946 | |
1947 | if (delta > maxdelta) | |
1948 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
1949 | the full frame, or make the only window aside from the |
1950 | minibuffer the full frame. */ | |
7ab12479 | 1951 | delta = maxdelta; |
d5783c40 JB |
1952 | |
1953 | if (delta == 0) | |
1954 | return; | |
7ab12479 JB |
1955 | } |
1956 | ||
265a9e55 | 1957 | if (!NILP (p->next) && |
7ab12479 JB |
1958 | (*sizefun) (p->next) - delta >= MINSIZE (p->next)) |
1959 | { | |
1960 | (*setsizefun) (p->next, (*sizefun) (p->next) - delta, 0); | |
1961 | (*setsizefun) (window, *sizep + delta, 0); | |
05c2896a | 1962 | CURBEG (p->next) += delta; |
7ab12479 JB |
1963 | /* This does not change size of p->next, |
1964 | but it propagates the new top edge to its children */ | |
1965 | (*setsizefun) (p->next, (*sizefun) (p->next), 0); | |
1966 | } | |
265a9e55 | 1967 | else if (!NILP (p->prev) && |
7ab12479 JB |
1968 | (*sizefun) (p->prev) - delta >= MINSIZE (p->prev)) |
1969 | { | |
1970 | (*setsizefun) (p->prev, (*sizefun) (p->prev) - delta, 0); | |
05c2896a | 1971 | CURBEG (window) -= delta; |
7ab12479 JB |
1972 | (*setsizefun) (window, *sizep + delta, 0); |
1973 | } | |
1974 | else | |
1975 | { | |
1976 | register int delta1; | |
1977 | register int opht = (*sizefun) (parent); | |
1978 | ||
1979 | /* If trying to grow this window to or beyond size of the parent, | |
1980 | make delta1 so big that, on shrinking back down, | |
1981 | all the siblings end up with less than one line and are deleted. */ | |
1982 | if (opht <= *sizep + delta) | |
1983 | delta1 = opht * opht * 2; | |
1984 | /* Otherwise, make delta1 just right so that if we add delta1 | |
1985 | lines to this window and to the parent, and then shrink | |
1986 | the parent back to its original size, the new proportional | |
1987 | size of this window will increase by delta. */ | |
1988 | else | |
1989 | delta1 = (delta * opht * 100) / ((opht - *sizep - delta) * 100); | |
1990 | ||
1991 | /* Add delta1 lines or columns to this window, and to the parent, | |
1992 | keeping things consistent while not affecting siblings. */ | |
05c2896a | 1993 | CURSIZE (parent) = opht + delta1; |
7ab12479 JB |
1994 | (*setsizefun) (window, *sizep + delta1, 0); |
1995 | ||
1996 | /* Squeeze out delta1 lines or columns from our parent, | |
1997 | shriking this window and siblings proportionately. | |
1998 | This brings parent back to correct size. | |
1999 | Delta1 was calculated so this makes this window the desired size, | |
2000 | taking it all out of the siblings. */ | |
2001 | (*setsizefun) (parent, opht, 0); | |
2002 | } | |
2003 | ||
2004 | XFASTINT (p->last_modified) = 0; | |
2005 | } | |
2006 | #undef MINSIZE | |
2007 | #undef CURBEG | |
2008 | #undef CURSIZE | |
2009 | ||
2010 | \f | |
2011 | /* Return number of lines of text (not counting mode line) in W. */ | |
2012 | ||
2013 | int | |
2014 | window_internal_height (w) | |
2015 | struct window *w; | |
2016 | { | |
2017 | int ht = XFASTINT (w->height); | |
2018 | ||
2019 | if (MINI_WINDOW_P (w)) | |
2020 | return ht; | |
2021 | ||
265a9e55 JB |
2022 | if (!NILP (w->parent) || !NILP (w->vchild) || !NILP (w->hchild) |
2023 | || !NILP (w->next) || !NILP (w->prev) | |
44fa5b1e | 2024 | || FRAME_WANTS_MODELINE_P (XFRAME (WINDOW_FRAME (w)))) |
7ab12479 JB |
2025 | return ht - 1; |
2026 | ||
2027 | return ht; | |
2028 | } | |
2029 | ||
2030 | /* Scroll contents of window WINDOW up N lines. */ | |
2031 | ||
2032 | void | |
f8026fd8 | 2033 | window_scroll (window, n, noerror) |
7ab12479 JB |
2034 | Lisp_Object window; |
2035 | int n; | |
f8026fd8 | 2036 | int noerror; |
7ab12479 JB |
2037 | { |
2038 | register struct window *w = XWINDOW (window); | |
2039 | register int opoint = point; | |
2040 | register int pos; | |
2041 | register int ht = window_internal_height (w); | |
2042 | register Lisp_Object tem; | |
2043 | int lose; | |
2044 | Lisp_Object bolp, nmoved; | |
2045 | ||
2046 | XFASTINT (tem) = point; | |
2047 | tem = Fpos_visible_in_window_p (tem, window); | |
2048 | ||
265a9e55 | 2049 | if (NILP (tem)) |
7ab12479 JB |
2050 | { |
2051 | Fvertical_motion (make_number (- ht / 2)); | |
2052 | XFASTINT (tem) = point; | |
2053 | Fset_marker (w->start, tem, w->buffer); | |
2054 | w->force_start = Qt; | |
2055 | } | |
2056 | ||
2057 | SET_PT (marker_position (w->start)); | |
2058 | lose = n < 0 && point == BEGV; | |
2059 | Fvertical_motion (make_number (n)); | |
2060 | pos = point; | |
2061 | bolp = Fbolp (); | |
2062 | SET_PT (opoint); | |
2063 | ||
2064 | if (lose) | |
f8026fd8 JB |
2065 | { |
2066 | if (noerror) | |
2067 | return; | |
2068 | else | |
2069 | Fsignal (Qbeginning_of_buffer, Qnil); | |
2070 | } | |
7ab12479 JB |
2071 | |
2072 | if (pos < ZV) | |
7ab12479 JB |
2073 | { |
2074 | set_marker_restricted (w->start, make_number (pos), w->buffer); | |
2075 | w->start_at_line_beg = bolp; | |
2076 | w->update_mode_line = Qt; | |
2077 | XFASTINT (w->last_modified) = 0; | |
2078 | if (pos > opoint) | |
2079 | SET_PT (pos); | |
2080 | if (n < 0) | |
2081 | { | |
2082 | SET_PT (pos); | |
2083 | tem = Fvertical_motion (make_number (ht)); | |
2084 | if (point > opoint || XFASTINT (tem) < ht) | |
2085 | SET_PT (opoint); | |
2086 | else | |
2087 | Fvertical_motion (make_number (-1)); | |
2088 | } | |
2089 | } | |
2090 | else | |
f8026fd8 JB |
2091 | { |
2092 | if (noerror) | |
2093 | return; | |
2094 | else | |
2095 | Fsignal (Qend_of_buffer, Qnil); | |
2096 | } | |
7ab12479 JB |
2097 | } |
2098 | \f | |
2099 | /* This is the guts of Fscroll_up and Fscroll_down. */ | |
2100 | ||
2101 | static void | |
2102 | scroll_command (n, direction) | |
2103 | register Lisp_Object n; | |
2104 | int direction; | |
2105 | { | |
2106 | register int defalt; | |
2107 | int count = specpdl_ptr - specpdl; | |
2108 | ||
95605e15 JB |
2109 | /* If selected window's buffer isn't current, make it current for the moment. |
2110 | But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 2111 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
2112 | { |
2113 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
2114 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
2115 | } | |
7ab12479 JB |
2116 | |
2117 | defalt = (window_internal_height (XWINDOW (selected_window)) | |
2118 | - next_screen_context_lines); | |
2119 | defalt = direction * (defalt < 1 ? 1 : defalt); | |
2120 | ||
265a9e55 | 2121 | if (NILP (n)) |
f8026fd8 | 2122 | window_scroll (selected_window, defalt, 0); |
7ab12479 | 2123 | else if (EQ (n, Qminus)) |
f8026fd8 | 2124 | window_scroll (selected_window, - defalt, 0); |
7ab12479 JB |
2125 | else |
2126 | { | |
2127 | n = Fprefix_numeric_value (n); | |
f8026fd8 | 2128 | window_scroll (selected_window, XINT (n) * direction, 0); |
7ab12479 | 2129 | } |
95605e15 JB |
2130 | |
2131 | unbind_to (count, Qnil); | |
7ab12479 JB |
2132 | } |
2133 | ||
2134 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
2135 | "Scroll text of current window upward ARG lines; or near full screen if no ARG.\n\ | |
2136 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
2137 | When calling from a program, supply a number as argument or nil.") | |
2138 | (n) | |
2139 | Lisp_Object n; | |
2140 | { | |
2141 | scroll_command (n, 1); | |
2142 | return Qnil; | |
2143 | } | |
2144 | ||
2145 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
2146 | "Scroll text of current window downward ARG lines; or near full screen if no ARG.\n\ | |
2147 | A near full screen is `next-screen-context-lines' less than a full screen.\n\ | |
2148 | When calling from a program, supply a number as argument or nil.") | |
2149 | (n) | |
2150 | Lisp_Object n; | |
2151 | { | |
2152 | scroll_command (n, -1); | |
2153 | return Qnil; | |
2154 | } | |
2155 | ||
2156 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
99e5add3 | 2157 | "Scroll next window upward ARG lines; or near full screen if no ARG.\n\ |
7ab12479 JB |
2158 | The next window is the one below the current one; or the one at the top\n\ |
2159 | if the current one is at the bottom.\n\ | |
2160 | When calling from a program, supply a number as argument or nil.\n\ | |
2161 | \n\ | |
2162 | If in the minibuffer, `minibuf-scroll-window' if non-nil\n\ | |
2163 | specifies the window to scroll.\n\ | |
2164 | If `other-window-scroll-buffer' is non-nil, scroll the window\n\ | |
2165 | showing that buffer, popping the buffer up if necessary.") | |
2166 | (n) | |
2167 | register Lisp_Object n; | |
2168 | { | |
2169 | register Lisp_Object window; | |
2170 | register int ht; | |
2171 | register struct window *w; | |
2172 | register int count = specpdl_ptr - specpdl; | |
2173 | ||
2174 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 2175 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
2176 | window = Vminibuf_scroll_window; |
2177 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 2178 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
2179 | { |
2180 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 2181 | if (NILP (window)) |
7ab12479 JB |
2182 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt); |
2183 | } | |
2184 | else | |
2185 | /* Nothing specified; pick a neighboring window. */ | |
2186 | window = Fnext_window (selected_window, Qnil, Qt); | |
605be8af | 2187 | CHECK_LIVE_WINDOW (window, 0); |
7ab12479 JB |
2188 | |
2189 | if (EQ (window, selected_window)) | |
2190 | error ("There is no other window"); | |
2191 | ||
2192 | w = XWINDOW (window); | |
2193 | ht = window_internal_height (w); | |
2194 | ||
2195 | /* Don't screw up if window_scroll gets an error. */ | |
2196 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
2197 | ||
2198 | Fset_buffer (w->buffer); | |
2199 | SET_PT (marker_position (w->pointm)); | |
2200 | ||
265a9e55 | 2201 | if (NILP (n)) |
f8026fd8 | 2202 | window_scroll (window, ht - next_screen_context_lines, 1); |
7ab12479 | 2203 | else if (EQ (n, Qminus)) |
f8026fd8 | 2204 | window_scroll (window, next_screen_context_lines - ht, 1); |
7ab12479 JB |
2205 | else |
2206 | { | |
2207 | if (XTYPE (n) == Lisp_Cons) | |
2208 | n = Fcar (n); | |
2209 | CHECK_NUMBER (n, 0); | |
f8026fd8 | 2210 | window_scroll (window, XINT (n), 1); |
7ab12479 JB |
2211 | } |
2212 | ||
2213 | Fset_marker (w->pointm, make_number (point), Qnil); | |
2214 | unbind_to (count); | |
2215 | ||
2216 | return Qnil; | |
2217 | } | |
2218 | \f | |
2219 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 1, 1, "P", | |
2220 | "Scroll selected window display ARG columns left.\n\ | |
2221 | Default for ARG is window width minus 2.") | |
2222 | (arg) | |
2223 | register Lisp_Object arg; | |
2224 | { | |
2225 | ||
265a9e55 | 2226 | if (NILP (arg)) |
7ab12479 JB |
2227 | XFASTINT (arg) = XFASTINT (XWINDOW (selected_window)->width) - 2; |
2228 | else | |
2229 | arg = Fprefix_numeric_value (arg); | |
2230 | ||
2231 | return | |
2232 | Fset_window_hscroll (selected_window, | |
2233 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
2234 | + XINT (arg))); | |
2235 | } | |
2236 | ||
2237 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 1, 1, "P", | |
2238 | "Scroll selected window display ARG columns right.\n\ | |
2239 | Default for ARG is window width minus 2.") | |
2240 | (arg) | |
2241 | register Lisp_Object arg; | |
2242 | { | |
265a9e55 | 2243 | if (NILP (arg)) |
7ab12479 JB |
2244 | XFASTINT (arg) = XFASTINT (XWINDOW (selected_window)->width) - 2; |
2245 | else | |
2246 | arg = Fprefix_numeric_value (arg); | |
2247 | ||
2248 | return | |
2249 | Fset_window_hscroll (selected_window, | |
2250 | make_number (XINT (XWINDOW (selected_window)->hscroll) | |
2251 | - XINT (arg))); | |
2252 | } | |
2253 | ||
2254 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", | |
44fa5b1e | 2255 | "Center point in window and redisplay frame. With ARG, put point on line ARG.\n\ |
7ab12479 | 2256 | The desired position of point is always relative to the current window.\n\ |
44fa5b1e JB |
2257 | Just C-u as prefix means put point in the center of the window.\n\ |
2258 | No arg (i.e., it is nil) erases the entire frame and then\n\ | |
2259 | redraws with point in the center of the current window.") | |
7ab12479 JB |
2260 | (n) |
2261 | register Lisp_Object n; | |
2262 | { | |
2263 | register struct window *w = XWINDOW (selected_window); | |
2264 | register int ht = window_internal_height (w); | |
2265 | register int opoint = point; | |
2266 | ||
265a9e55 | 2267 | if (NILP (n)) |
7ab12479 | 2268 | { |
44fa5b1e | 2269 | extern int frame_garbaged; |
7ab12479 | 2270 | |
44fa5b1e | 2271 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
7ab12479 JB |
2272 | XFASTINT (n) = ht / 2; |
2273 | } | |
2274 | else if (XTYPE (n) == Lisp_Cons) /* Just C-u. */ | |
2275 | { | |
2276 | XFASTINT (n) = ht / 2; | |
2277 | } | |
2278 | else | |
2279 | { | |
2280 | n = Fprefix_numeric_value (n); | |
2281 | CHECK_NUMBER (n, 0); | |
2282 | } | |
2283 | ||
2284 | if (XINT (n) < 0) | |
2285 | XSETINT (n, XINT (n) + ht); | |
2286 | ||
2287 | XSETINT (n, - XINT (n)); | |
2288 | ||
2289 | Fvertical_motion (n); | |
2290 | Fset_marker (w->start, make_number (point), w->buffer); | |
2291 | w->start_at_line_beg = Fbolp (); | |
2292 | ||
2293 | SET_PT (opoint); | |
2294 | w->force_start = Qt; | |
2295 | ||
2296 | return Qnil; | |
2297 | } | |
2298 | \f | |
2299 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
2300 | 1, 1, "P", | |
2301 | "Position point relative to window.\n\ | |
2302 | With no argument, position text at center of window.\n\ | |
44fa5b1e | 2303 | An argument specifies frame line; zero means top of window,\n\ |
7ab12479 JB |
2304 | negative means relative to bottom of window.") |
2305 | (arg) | |
2306 | register Lisp_Object arg; | |
2307 | { | |
2308 | register struct window *w = XWINDOW (selected_window); | |
2309 | register int height = window_internal_height (w); | |
2310 | register int start; | |
2311 | ||
265a9e55 | 2312 | if (NILP (arg)) |
7ab12479 JB |
2313 | XFASTINT (arg) = height / 2; |
2314 | else | |
2315 | { | |
2316 | arg = Fprefix_numeric_value (arg); | |
2317 | if (XINT (arg) < 0) | |
2318 | XSETINT (arg, XINT (arg) + height); | |
2319 | } | |
2320 | ||
2321 | start = marker_position (w->start); | |
2322 | if (start < BEGV || start > ZV) | |
2323 | { | |
2324 | Fvertical_motion (make_number (- height / 2)); | |
2325 | Fset_marker (w->start, make_number (point), w->buffer); | |
2326 | w->start_at_line_beg = Fbolp (); | |
2327 | w->force_start = Qt; | |
2328 | } | |
2329 | else | |
2330 | SET_PT (start); | |
2331 | ||
2332 | return Fvertical_motion (arg); | |
2333 | } | |
2334 | \f | |
2335 | struct save_window_data | |
2336 | { | |
2337 | int size_from_Lisp_Vector_struct; | |
2338 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
44fa5b1e | 2339 | Lisp_Object frame_width, frame_height; |
bdc727bf | 2340 | Lisp_Object selected_frame; |
7ab12479 JB |
2341 | Lisp_Object current_window; |
2342 | Lisp_Object current_buffer; | |
2343 | Lisp_Object minibuf_scroll_window; | |
2344 | Lisp_Object root_window; | |
bdc727bf | 2345 | Lisp_Object focus_frame; |
7ab12479 JB |
2346 | /* A vector, interpreted as a struct saved_window */ |
2347 | Lisp_Object saved_windows; | |
2348 | }; | |
ff06df24 JB |
2349 | |
2350 | /* Arg to Fmake_vector */ | |
2351 | #define SAVE_WINDOW_DATA_SIZE \ | |
2352 | ((sizeof (struct save_window_data) \ | |
2353 | - (sizeof (struct Lisp_Vector) \ | |
2354 | /* Don't count the contents member of the struct Lisp_Vector */ \ | |
2355 | - sizeof (Lisp_Object))) \ | |
2356 | / sizeof (Lisp_Object)) | |
7ab12479 JB |
2357 | |
2358 | /* This is saved as a Lisp_Vector */ | |
2359 | struct saved_window | |
2360 | { | |
2361 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
2362 | int size_from_Lisp_Vector_struct; | |
2363 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
2364 | ||
2365 | Lisp_Object window; | |
2366 | Lisp_Object buffer, start, pointm, mark; | |
2367 | Lisp_Object left, top, width, height, hscroll; | |
2368 | Lisp_Object parent, prev; | |
2369 | Lisp_Object start_at_line_beg; | |
2370 | Lisp_Object display_table; | |
2371 | }; | |
2372 | #define SAVED_WINDOW_VECTOR_SIZE 14 /* Arg to Fmake_vector */ | |
2373 | ||
2374 | #define SAVED_WINDOW_N(swv,n) \ | |
2375 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
2376 | ||
2377 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
2378 | "T if OBJECT is a window-configration object.") | |
2379 | (obj) | |
2380 | Lisp_Object obj; | |
2381 | { | |
2382 | if (XTYPE (obj) == Lisp_Window_Configuration) | |
2383 | return Qt; | |
2384 | return Qnil; | |
2385 | } | |
2386 | ||
2387 | ||
2388 | DEFUN ("set-window-configuration", | |
2389 | Fset_window_configuration, Sset_window_configuration, | |
2390 | 1, 1, 0, | |
2391 | "Set the configuration of windows and buffers as specified by CONFIGURATION.\n\ | |
2392 | CONFIGURATION must be a value previously returned\n\ | |
2393 | by `current-window-configuration' (which see).") | |
2f83aebe JB |
2394 | (configuration) |
2395 | Lisp_Object configuration; | |
7ab12479 JB |
2396 | { |
2397 | register struct window *w; | |
2398 | register struct save_window_data *data; | |
2399 | struct Lisp_Vector *saved_windows; | |
2400 | register struct saved_window *p; | |
2401 | register Lisp_Object tem; | |
2402 | Lisp_Object new_current_buffer; | |
2403 | int k; | |
44fa5b1e | 2404 | FRAME_PTR f; |
7ab12479 | 2405 | |
bdc727bf JB |
2406 | /* If the frame has been resized since this window configuration was |
2407 | made, we change the frame to the size specified in the | |
2408 | configuration, restore the configuration, and then resize it | |
2409 | back. We keep track of the prevailing height in these variables. */ | |
83762ba4 JB |
2410 | int previous_frame_height; |
2411 | int previous_frame_width; | |
83762ba4 | 2412 | |
2f83aebe | 2413 | while (XTYPE (configuration) != Lisp_Window_Configuration) |
7ab12479 | 2414 | { |
2f83aebe JB |
2415 | configuration = wrong_type_argument (intern ("window-configuration-p"), |
2416 | configuration); | |
7ab12479 JB |
2417 | } |
2418 | ||
2f83aebe | 2419 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
2420 | saved_windows = XVECTOR (data->saved_windows); |
2421 | ||
44fa5b1e | 2422 | f = XFRAME (XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame); |
7ab12479 | 2423 | |
bdc727bf JB |
2424 | previous_frame_height = FRAME_HEIGHT (f); |
2425 | previous_frame_width = FRAME_WIDTH (f); | |
2426 | if (XFASTINT (data->frame_height) != previous_frame_height | |
2427 | || XFASTINT (data->frame_width) != previous_frame_width) | |
2428 | change_frame_size (f, data->frame_height, data->frame_width, 0, 0); | |
7ab12479 JB |
2429 | |
2430 | windows_or_buffers_changed++; | |
2431 | new_current_buffer = data->current_buffer; | |
265a9e55 | 2432 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 JB |
2433 | new_current_buffer = Qnil; |
2434 | ||
9ace597f JB |
2435 | /* Kludge Alert! |
2436 | Mark all windows now on frame as "deleted". | |
2437 | Restoring the new configuration "undeletes" any that are in it. | |
2438 | ||
2439 | Save their current buffers in their height fields, since we may | |
bdc727bf | 2440 | need it later, if a buffer saved in the configuration is now |
9ace597f | 2441 | dead. */ |
44fa5b1e | 2442 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
7ab12479 JB |
2443 | |
2444 | for (k = 0; k < saved_windows->size; k++) | |
2445 | { | |
2446 | p = SAVED_WINDOW_N (saved_windows, k); | |
2447 | w = XWINDOW (p->window); | |
2448 | w->next = Qnil; | |
2449 | ||
265a9e55 | 2450 | if (!NILP (p->parent)) |
7ab12479 JB |
2451 | w->parent = SAVED_WINDOW_N (saved_windows, XFASTINT (p->parent))->window; |
2452 | else | |
2453 | w->parent = Qnil; | |
2454 | ||
265a9e55 | 2455 | if (!NILP (p->prev)) |
7ab12479 JB |
2456 | { |
2457 | w->prev = SAVED_WINDOW_N (saved_windows, XFASTINT (p->prev))->window; | |
2f83aebe | 2458 | XWINDOW (w->prev)->next = p->window; |
7ab12479 JB |
2459 | } |
2460 | else | |
2461 | { | |
2462 | w->prev = Qnil; | |
265a9e55 | 2463 | if (!NILP (w->parent)) |
7ab12479 JB |
2464 | { |
2465 | if (EQ (p->width, XWINDOW (w->parent)->width)) | |
2466 | { | |
2467 | XWINDOW (w->parent)->vchild = p->window; | |
2468 | XWINDOW (w->parent)->hchild = Qnil; | |
2469 | } | |
2470 | else | |
2471 | { | |
2472 | XWINDOW (w->parent)->hchild = p->window; | |
2473 | XWINDOW (w->parent)->vchild = Qnil; | |
2474 | } | |
2475 | } | |
2476 | } | |
9ace597f JB |
2477 | |
2478 | /* If we squirreled away the buffer in the window's height, | |
2479 | restore it now. */ | |
2480 | if (XTYPE (w->height) == Lisp_Buffer) | |
2481 | w->buffer = w->height; | |
7ab12479 JB |
2482 | w->left = p->left; |
2483 | w->top = p->top; | |
2484 | w->width = p->width; | |
2485 | w->height = p->height; | |
2486 | w->hscroll = p->hscroll; | |
2487 | w->display_table = p->display_table; | |
2488 | XFASTINT (w->last_modified) = 0; | |
2489 | ||
2490 | /* Reinstall the saved buffer and pointers into it. */ | |
265a9e55 | 2491 | if (NILP (p->buffer)) |
7ab12479 JB |
2492 | w->buffer = p->buffer; |
2493 | else | |
2494 | { | |
265a9e55 | 2495 | if (!NILP (XBUFFER (p->buffer)->name)) |
7ab12479 JB |
2496 | /* If saved buffer is alive, install it. */ |
2497 | { | |
2498 | w->buffer = p->buffer; | |
2499 | w->start_at_line_beg = p->start_at_line_beg; | |
2500 | set_marker_restricted (w->start, Fmarker_position (p->start), w->buffer); | |
2501 | set_marker_restricted (w->pointm, Fmarker_position (p->pointm), w->buffer); | |
2502 | Fset_marker (XBUFFER (w->buffer)->mark, | |
2503 | Fmarker_position (p->mark), w->buffer); | |
2504 | ||
bdc727bf JB |
2505 | /* As documented in Fcurrent_window_configuration, don't |
2506 | save the location of point in the buffer which was current | |
2507 | when the window configuration was recorded. */ | |
7ab12479 JB |
2508 | if (!EQ (p->buffer, new_current_buffer) && |
2509 | XBUFFER (p->buffer) == current_buffer) | |
2510 | Fgoto_char (w->pointm); | |
2511 | } | |
265a9e55 | 2512 | else if (NILP (XBUFFER (w->buffer)->name)) |
7ab12479 JB |
2513 | /* Else if window's old buffer is dead too, get a live one. */ |
2514 | { | |
2515 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); | |
2516 | /* This will set the markers to beginning of visible range. */ | |
2517 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
2518 | set_marker_restricted (w->pointm, make_number (0), w->buffer); | |
2519 | w->start_at_line_beg = Qt; | |
2520 | } | |
2521 | else | |
2522 | /* Keeping window's old buffer; make sure the markers are real. */ | |
2523 | /* Else if window's old buffer is dead too, get a live one. */ | |
2524 | { | |
2525 | /* Set window markers at start of visible range. */ | |
2526 | if (XMARKER (w->start)->buffer == 0) | |
2527 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
2528 | if (XMARKER (w->pointm)->buffer == 0) | |
2529 | set_marker_restricted (w->pointm, | |
2530 | make_number (BUF_PT (XBUFFER (w->buffer))), | |
2531 | w->buffer); | |
2532 | w->start_at_line_beg = Qt; | |
2533 | } | |
2534 | } | |
2535 | } | |
2536 | ||
44fa5b1e | 2537 | FRAME_ROOT_WINDOW (f) = data->root_window; |
bdc727bf JB |
2538 | Fselect_window (data->current_window); |
2539 | ||
2540 | /* Fselect_window will have made f the selected frame, so we | |
2541 | reselect the proper frame here. Fselect_frame will change the | |
2542 | selected window too, but that doesn't make the call to | |
2543 | Fselect_window above totally superfluous; it still sets f's | |
2544 | selected window. */ | |
ff06df24 | 2545 | Fselect_frame (data->selected_frame); |
bdc727bf JB |
2546 | |
2547 | if (!NILP (new_current_buffer)) | |
2548 | Fset_buffer (new_current_buffer); | |
2549 | ||
2550 | #ifdef MULTI_FRAME | |
2551 | { | |
2552 | Lisp_Object frame; | |
2553 | ||
2554 | XSET (frame, Lisp_Frame, f); | |
2555 | Fredirect_frame_focus (frame, data->focus_frame); | |
2556 | } | |
2557 | #endif | |
7ab12479 | 2558 | |
e8121f2a JB |
2559 | #if 0 /* I don't understand why this is needed, and it causes |
2560 | problems when the frame's old selected window has been | |
2561 | deleted. */ | |
44fa5b1e | 2562 | #ifdef MULTI_FRAME |
a481b3ea | 2563 | if (f != selected_frame && ! FRAME_TERMCAP_P (f)) |
44fa5b1e | 2564 | Fselect_frame (WINDOW_FRAME (XWINDOW (data->root_window)), Qnil); |
e8121f2a | 2565 | #endif |
7ab12479 JB |
2566 | #endif |
2567 | ||
83762ba4 | 2568 | /* Set the screen height to the value it had before this function. */ |
bdc727bf JB |
2569 | if (previous_frame_height != FRAME_HEIGHT (f) |
2570 | || previous_frame_width != FRAME_WIDTH (f)) | |
83762ba4 JB |
2571 | change_frame_size (f, previous_frame_height, previous_frame_width, 0, 0); |
2572 | ||
7ab12479 JB |
2573 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
2574 | return (Qnil); | |
2575 | } | |
2576 | ||
44fa5b1e | 2577 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
2578 | by setting their buffers to nil. */ |
2579 | ||
2580 | static void | |
2581 | delete_all_subwindows (w) | |
2582 | register struct window *w; | |
2583 | { | |
265a9e55 | 2584 | if (!NILP (w->next)) |
7ab12479 | 2585 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 2586 | if (!NILP (w->vchild)) |
7ab12479 | 2587 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 2588 | if (!NILP (w->hchild)) |
7ab12479 | 2589 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af JB |
2590 | |
2591 | w->height = w->buffer; /* See Fset_window_configuration for excuse. */ | |
2592 | ||
2593 | /* We set all three of these fields to nil, to make sure that we can | |
2594 | distinguish this dead window from any live window. Live leaf | |
2595 | windows will have buffer set, and combination windows will have | |
2596 | vchild or hchild set. */ | |
2597 | w->buffer = Qnil; | |
2598 | w->vchild = Qnil; | |
2599 | w->hchild = Qnil; | |
7ab12479 JB |
2600 | } |
2601 | \f | |
2602 | static int | |
2603 | count_windows (window) | |
2604 | register struct window *window; | |
2605 | { | |
2606 | register int count = 1; | |
265a9e55 | 2607 | if (!NILP (window->next)) |
7ab12479 | 2608 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 2609 | if (!NILP (window->vchild)) |
7ab12479 | 2610 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 2611 | if (!NILP (window->hchild)) |
7ab12479 JB |
2612 | count += count_windows (XWINDOW (window->hchild)); |
2613 | return count; | |
2614 | } | |
2615 | ||
2616 | static int | |
2617 | save_window_save (window, vector, i) | |
2618 | Lisp_Object window; | |
2619 | struct Lisp_Vector *vector; | |
2620 | int i; | |
2621 | { | |
2622 | register struct saved_window *p; | |
2623 | register struct window *w; | |
2624 | register Lisp_Object tem; | |
2625 | ||
265a9e55 | 2626 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
2627 | { |
2628 | p = SAVED_WINDOW_N (vector, i); | |
2629 | w = XWINDOW (window); | |
2630 | ||
2631 | XFASTINT (w->temslot) = i++; | |
2632 | p->window = window; | |
2633 | p->buffer = w->buffer; | |
2634 | p->left = w->left; | |
2635 | p->top = w->top; | |
2636 | p->width = w->width; | |
2637 | p->height = w->height; | |
2638 | p->hscroll = w->hscroll; | |
2639 | p->display_table = w->display_table; | |
265a9e55 | 2640 | if (!NILP (w->buffer)) |
7ab12479 JB |
2641 | { |
2642 | /* Save w's value of point in the window configuration. | |
2643 | If w is the selected window, then get the value of point | |
2644 | from the buffer; pointm is garbage in the selected window. */ | |
2645 | if (EQ (window, selected_window)) | |
2646 | { | |
2647 | p->pointm = Fmake_marker (); | |
2648 | Fset_marker (p->pointm, BUF_PT (XBUFFER (w->buffer)), | |
2649 | w->buffer); | |
2650 | } | |
2651 | else | |
2652 | p->pointm = Fcopy_marker (w->pointm); | |
2653 | ||
2654 | p->start = Fcopy_marker (w->start); | |
2655 | p->start_at_line_beg = w->start_at_line_beg; | |
2656 | ||
2657 | tem = XBUFFER (w->buffer)->mark; | |
2658 | p->mark = Fcopy_marker (tem); | |
2659 | } | |
2660 | else | |
2661 | { | |
2662 | p->pointm = Qnil; | |
2663 | p->start = Qnil; | |
2664 | p->mark = Qnil; | |
2665 | p->start_at_line_beg = Qnil; | |
2666 | } | |
2667 | ||
265a9e55 | 2668 | if (NILP (w->parent)) |
7ab12479 JB |
2669 | p->parent = Qnil; |
2670 | else | |
2671 | p->parent = XWINDOW (w->parent)->temslot; | |
2672 | ||
265a9e55 | 2673 | if (NILP (w->prev)) |
7ab12479 JB |
2674 | p->prev = Qnil; |
2675 | else | |
2676 | p->prev = XWINDOW (w->prev)->temslot; | |
2677 | ||
265a9e55 | 2678 | if (!NILP (w->vchild)) |
7ab12479 | 2679 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 2680 | if (!NILP (w->hchild)) |
7ab12479 JB |
2681 | i = save_window_save (w->hchild, vector, i); |
2682 | } | |
2683 | ||
2684 | return i; | |
2685 | } | |
2686 | ||
2687 | DEFUN ("current-window-configuration", | |
43bad991 | 2688 | Fcurrent_window_configuration, Scurrent_window_configuration, 0, 1, 0, |
44fa5b1e JB |
2689 | "Return an object representing the current window configuration of FRAME.\n\ |
2690 | If FRAME is nil or omitted, use the selected frame.\n\ | |
7ab12479 JB |
2691 | This describes the number of windows, their sizes and current buffers,\n\ |
2692 | and for each displayed buffer, where display starts, and the positions of\n\ | |
2693 | point and mark. An exception is made for point in the current buffer:\n\ | |
bdc727bf JB |
2694 | its value is -not- saved.\n\ |
2695 | This also records the currently selected frame, and FRAME's focus\n\ | |
2696 | redirection (see `redirect-frame-focus').") | |
44fa5b1e JB |
2697 | (frame) |
2698 | Lisp_Object frame; | |
7ab12479 JB |
2699 | { |
2700 | register Lisp_Object tem; | |
2701 | register int n_windows; | |
2702 | register struct save_window_data *data; | |
2703 | register int i; | |
44fa5b1e | 2704 | FRAME_PTR f; |
43bad991 | 2705 | |
44fa5b1e JB |
2706 | if (NILP (frame)) |
2707 | f = selected_frame; | |
43bad991 JB |
2708 | else |
2709 | { | |
44fa5b1e JB |
2710 | CHECK_LIVE_FRAME (frame, 0); |
2711 | f = XFRAME (frame); | |
43bad991 | 2712 | } |
7ab12479 | 2713 | |
44fa5b1e | 2714 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
7ab12479 JB |
2715 | data = (struct save_window_data *) |
2716 | XVECTOR (Fmake_vector (make_number (SAVE_WINDOW_DATA_SIZE), | |
2717 | Qnil)); | |
44fa5b1e JB |
2718 | XFASTINT (data->frame_width) = FRAME_WIDTH (f); |
2719 | XFASTINT (data->frame_height) = FRAME_HEIGHT (f); | |
bdc727bf | 2720 | XSET (data->selected_frame, Lisp_Frame, selected_frame); |
44fa5b1e | 2721 | data->current_window = FRAME_SELECTED_WINDOW (f); |
7ab12479 JB |
2722 | XSET (data->current_buffer, Lisp_Buffer, current_buffer); |
2723 | data->minibuf_scroll_window = Vminibuf_scroll_window; | |
44fa5b1e | 2724 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 2725 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
7ab12479 JB |
2726 | tem = Fmake_vector (make_number (n_windows), Qnil); |
2727 | data->saved_windows = tem; | |
2728 | for (i = 0; i < n_windows; i++) | |
2729 | XVECTOR (tem)->contents[i] | |
2730 | = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil); | |
44fa5b1e | 2731 | save_window_save (FRAME_ROOT_WINDOW (f), |
7ab12479 JB |
2732 | XVECTOR (tem), 0); |
2733 | XSET (tem, Lisp_Window_Configuration, data); | |
2734 | return (tem); | |
2735 | } | |
2736 | ||
2737 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
2738 | 0, UNEVALLED, 0, | |
2739 | "Execute body, preserving window sizes and contents.\n\ | |
2740 | Restores which buffer appears in which window, where display starts,\n\ | |
2741 | as well as the current buffer.\n\ | |
2742 | Does not restore the value of point in current buffer.") | |
2743 | (args) | |
2744 | Lisp_Object args; | |
2745 | { | |
2746 | register Lisp_Object val; | |
2747 | register int count = specpdl_ptr - specpdl; | |
2748 | ||
2749 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 2750 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
2751 | val = Fprogn (args); |
2752 | return unbind_to (count, val); | |
2753 | } | |
2754 | \f | |
2755 | init_window_once () | |
2756 | { | |
44fa5b1e JB |
2757 | #ifdef MULTI_FRAME |
2758 | selected_frame = make_terminal_frame (); | |
2759 | minibuf_window = selected_frame->minibuffer_window; | |
2760 | selected_window = selected_frame->selected_window; | |
2761 | last_nonminibuf_frame = selected_frame; | |
2762 | #else /* not MULTI_FRAME */ | |
7ab12479 JB |
2763 | extern Lisp_Object get_minibuffer (); |
2764 | ||
95605e15 | 2765 | minibuf_window = make_window (); |
4b206065 | 2766 | FRAME_ROOT_WINDOW (selected_frame) = make_window (); |
7ab12479 | 2767 | |
44fa5b1e JB |
2768 | XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->next = minibuf_window; |
2769 | XWINDOW (minibuf_window)->prev = FRAME_ROOT_WINDOW (selected_frame); | |
4b206065 | 2770 | XWINDOW (minibuf_window)->mini_p = Qt; |
7ab12479 JB |
2771 | |
2772 | /* These values 9 and 10 are arbitrary, | |
2773 | just so that there is "something there." | |
2774 | Correct values are put in in init_xdisp */ | |
2775 | ||
44fa5b1e | 2776 | XFASTINT (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->width) = 10; |
7ab12479 JB |
2777 | XFASTINT (XWINDOW (minibuf_window)->width) = 10; |
2778 | ||
44fa5b1e | 2779 | XFASTINT (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->height) = 9; |
7ab12479 JB |
2780 | XFASTINT (XWINDOW (minibuf_window)->top) = 9; |
2781 | XFASTINT (XWINDOW (minibuf_window)->height) = 1; | |
2782 | ||
2783 | /* Prevent error in Fset_window_buffer. */ | |
44fa5b1e | 2784 | XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->buffer = Qt; |
7ab12479 JB |
2785 | XWINDOW (minibuf_window)->buffer = Qt; |
2786 | ||
2787 | /* Now set them up for real. */ | |
44fa5b1e | 2788 | Fset_window_buffer (FRAME_ROOT_WINDOW (selected_frame), |
e5d77022 | 2789 | Fcurrent_buffer ()); |
7ab12479 JB |
2790 | Fset_window_buffer (minibuf_window, get_minibuffer (0)); |
2791 | ||
44fa5b1e | 2792 | selected_window = FRAME_ROOT_WINDOW (selected_frame); |
1d8d96fa JB |
2793 | /* Make sure this window seems more recently used than |
2794 | a newly-created, never-selected window. Increment | |
2795 | window_select_count so the first selection ever will get | |
2796 | something newer than this. */ | |
2797 | XFASTINT (XWINDOW (selected_window)->use_time) = ++window_select_count; | |
44fa5b1e | 2798 | #endif /* not MULTI_FRAME */ |
7ab12479 JB |
2799 | } |
2800 | ||
2801 | syms_of_window () | |
2802 | { | |
2803 | Qwindowp = intern ("windowp"); | |
2804 | staticpro (&Qwindowp); | |
2805 | ||
605be8af JB |
2806 | Qlive_window_p = intern ("live-window-p"); |
2807 | staticpro (&Qlive_window_p); | |
2808 | ||
2f83aebe | 2809 | #ifndef MULTI_FRAME |
7ab12479 JB |
2810 | /* Make sure all windows get marked */ |
2811 | staticpro (&minibuf_window); | |
2f83aebe | 2812 | #endif |
7ab12479 JB |
2813 | |
2814 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, | |
2815 | "Non-nil means call as function to display a help buffer.\n\ | |
2816 | Used by `with-output-to-temp-buffer'."); | |
2817 | Vtemp_buffer_show_function = Qnil; | |
2818 | ||
2819 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
2820 | "If non-nil, function to call to handle `display-buffer'.\n\ | |
2821 | It will receive two args, the buffer and a flag which if non-nil means\n\ | |
2822 | that the currently selected window is not acceptable.\n\ | |
2823 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window'\n\ | |
2824 | work using this function."); | |
2825 | Vdisplay_buffer_function = Qnil; | |
2826 | ||
2827 | DEFVAR_LISP ("mouse-window", &Vmouse_window, | |
2828 | "Window that the last mouse click occurred on."); | |
2829 | Vmouse_window = Qnil; | |
2830 | ||
2831 | DEFVAR_LISP ("mouse-event", &Vmouse_event, | |
2832 | "The last mouse-event object. A list of four elements:\n\ | |
44fa5b1e | 2833 | ((X-POS Y-POS) WINDOW FRAME-PART KEYSEQ).\n\ |
7ab12479 JB |
2834 | KEYSEQ is a string, the key sequence to be looked up in the mouse maps.\n\ |
2835 | WINDOW is the window that the click applies do.\n\ | |
44fa5b1e | 2836 | If FRAME-PART is non-nil, the event was on a scrollbar;\n\ |
7ab12479 JB |
2837 | then Y-POS is really the total length of the scrollbar, while X-POS is\n\ |
2838 | the relative position of the scrollbar's value within that total length.\n\ | |
44fa5b1e | 2839 | FRAME-PART is one of the following symbols:\n\ |
7ab12479 JB |
2840 | `vertical-scrollbar', `vertical-slider',\n\ |
2841 | `vertical-thumbup', `vertical-thumbdown',\n\ | |
2842 | `horizontal-scrollbar', `horizontal-slider',\n\ | |
2843 | `horizontal-thumbleft', `horizontal-thumbright'"); | |
2844 | Vmouse_event = Qnil; | |
2845 | ||
2846 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, | |
2847 | "Non-nil means it is the window that C-M-v in minibuffer should scroll."); | |
2848 | Vminibuf_scroll_window = Qnil; | |
2849 | ||
2850 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, | |
2851 | "If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window."); | |
2852 | Vother_window_scroll_buffer = Qnil; | |
2853 | ||
44fa5b1e JB |
2854 | #ifdef MULTI_FRAME |
2855 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, | |
700f75a4 | 2856 | "*Non-nil means `display-buffer' should make a separate frame."); |
44fa5b1e | 2857 | pop_up_frames = 0; |
7ab12479 | 2858 | |
44fa5b1e JB |
2859 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
2860 | "*If non-nil, function to call to handle automatic new frame creation.\n\ | |
2861 | It is called with no arguments and should return a newly created frame.\n\ | |
7ab12479 | 2862 | \n\ |
44fa5b1e JB |
2863 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))'\n\ |
2864 | where `pop-up-frame-alist' would hold the default frame parameters."); | |
2865 | Vpop_up_frame_function = Qnil; | |
7ab12479 JB |
2866 | #endif |
2867 | ||
2868 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, | |
2869 | "*Non-nil means display-buffer should make new windows."); | |
2870 | pop_up_windows = 1; | |
2871 | ||
2872 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
2873 | "*Number of lines of continuity when scrolling by screenfuls."); | |
2874 | next_screen_context_lines = 2; | |
2875 | ||
2876 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
2877 | "*display-buffer would prefer to split the largest window if this large.\n\ | |
2878 | If there is only one window, it is split regardless of this value."); | |
2879 | split_height_threshold = 500; | |
2880 | ||
2881 | DEFVAR_INT ("window-min-height", &window_min_height, | |
2882 | "*Delete any window less than this tall (including its mode line)."); | |
2883 | window_min_height = 4; | |
2884 | ||
2885 | DEFVAR_INT ("window-min-width", &window_min_width, | |
2886 | "*Delete any window less than this wide."); | |
2887 | window_min_width = 10; | |
2888 | ||
2889 | defsubr (&Sselected_window); | |
2890 | defsubr (&Sminibuffer_window); | |
2891 | defsubr (&Swindow_minibuffer_p); | |
2892 | defsubr (&Swindowp); | |
605be8af | 2893 | defsubr (&Slive_window_p); |
7ab12479 JB |
2894 | defsubr (&Spos_visible_in_window_p); |
2895 | defsubr (&Swindow_buffer); | |
2896 | defsubr (&Swindow_height); | |
2897 | defsubr (&Swindow_width); | |
2898 | defsubr (&Swindow_hscroll); | |
2899 | defsubr (&Sset_window_hscroll); | |
2900 | defsubr (&Swindow_edges); | |
d5783c40 JB |
2901 | defsubr (&Scoordinates_in_window_p); |
2902 | defsubr (&Swindow_at); | |
7ab12479 JB |
2903 | defsubr (&Swindow_point); |
2904 | defsubr (&Swindow_start); | |
2905 | defsubr (&Swindow_end); | |
2906 | defsubr (&Sset_window_point); | |
2907 | defsubr (&Sset_window_start); | |
2908 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 2909 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
2910 | defsubr (&Swindow_display_table); |
2911 | defsubr (&Sset_window_display_table); | |
2912 | defsubr (&Snext_window); | |
2913 | defsubr (&Sprevious_window); | |
2914 | defsubr (&Sother_window); | |
2915 | defsubr (&Sget_lru_window); | |
2916 | defsubr (&Sget_largest_window); | |
2917 | defsubr (&Sget_buffer_window); | |
2918 | defsubr (&Sdelete_other_windows); | |
2919 | defsubr (&Sdelete_windows_on); | |
2920 | defsubr (&Sreplace_buffer_in_windows); | |
2921 | defsubr (&Sdelete_window); | |
2922 | defsubr (&Sset_window_buffer); | |
2923 | defsubr (&Sselect_window); | |
2924 | defsubr (&Sdisplay_buffer); | |
2925 | defsubr (&Ssplit_window); | |
2926 | defsubr (&Senlarge_window); | |
2927 | defsubr (&Sshrink_window); | |
2928 | defsubr (&Sscroll_up); | |
2929 | defsubr (&Sscroll_down); | |
2930 | defsubr (&Sscroll_left); | |
2931 | defsubr (&Sscroll_right); | |
2932 | defsubr (&Sscroll_other_window); | |
2933 | defsubr (&Srecenter); | |
2934 | defsubr (&Smove_to_window_line); | |
2935 | defsubr (&Swindow_configuration_p); | |
2936 | defsubr (&Sset_window_configuration); | |
2937 | defsubr (&Scurrent_window_configuration); | |
2938 | defsubr (&Ssave_window_excursion); | |
2939 | } | |
2940 | ||
2941 | keys_of_window () | |
2942 | { | |
2943 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
2944 | initial_define_key (control_x_map, '2', "split-window"); | |
2945 | initial_define_key (control_x_map, '0', "delete-window"); | |
2946 | initial_define_key (control_x_map, 'o', "other-window"); | |
2947 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
2948 | initial_define_key (control_x_map, '<', "scroll-left"); | |
2949 | initial_define_key (control_x_map, '>', "scroll-right"); | |
2950 | ||
2951 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
2952 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
2953 | initial_define_key (meta_map, 'v', "scroll-down"); | |
2954 | ||
2955 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
2956 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
2957 | } |