Commit | Line | Data |
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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
203eb0aa | 3 | Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1996, 1997, 1998, 2000, |
8cabe764 GM |
4 | 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
5 | Free Software Foundation, Inc. | |
7ab12479 JB |
6 | |
7 | This file is part of GNU Emacs. | |
8 | ||
9 | GNU Emacs is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
684d6f5b | 11 | the Free Software Foundation; either version 3, or (at your option) |
7ab12479 JB |
12 | any later version. |
13 | ||
14 | GNU Emacs is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
21 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
22 | Boston, MA 02110-1301, USA. */ | |
7ab12479 | 23 | |
18160b98 | 24 | #include <config.h> |
4d553a13 KL |
25 | #include <stdio.h> |
26 | ||
7ab12479 JB |
27 | #include "lisp.h" |
28 | #include "buffer.h" | |
3e4731a3 | 29 | #include "keyboard.h" |
e35f6ff7 | 30 | #include "keymap.h" |
44fa5b1e | 31 | #include "frame.h" |
7ab12479 JB |
32 | #include "window.h" |
33 | #include "commands.h" | |
34 | #include "indent.h" | |
35 | #include "termchar.h" | |
36 | #include "disptab.h" | |
dfcf069d | 37 | #include "dispextern.h" |
5500c422 GM |
38 | #include "blockinput.h" |
39 | #include "intervals.h" | |
de509a60 | 40 | #include "termhooks.h" /* For FRAME_TERMINAL. */ |
5500c422 | 41 | |
6d55d620 | 42 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 43 | #include "xterm.h" |
5500c422 | 44 | #endif /* HAVE_X_WINDOWS */ |
8f23f280 AI |
45 | #ifdef WINDOWSNT |
46 | #include "w32term.h" | |
47 | #endif | |
1e3c8885 EZ |
48 | #ifdef MSDOS |
49 | #include "msdos.h" | |
50 | #endif | |
e0f712ba | 51 | #ifdef MAC_OS |
1a578e9b AC |
52 | #include "macterm.h" |
53 | #endif | |
5500c422 | 54 | |
5500c422 | 55 | |
3f8ab7bd | 56 | Lisp_Object Qwindowp, Qwindow_live_p, Qwindow_configuration_p; |
c525d842 | 57 | Lisp_Object Qscroll_up, Qscroll_down; |
90647b07 | 58 | Lisp_Object Qwindow_size_fixed; |
49b996e7 | 59 | extern Lisp_Object Qleft_margin, Qright_margin; |
7ab12479 | 60 | |
521b203e | 61 | static int displayed_window_lines P_ ((struct window *)); |
5e14b1fc | 62 | static struct window *decode_window P_ ((Lisp_Object)); |
5500c422 GM |
63 | static int count_windows P_ ((struct window *)); |
64 | static int get_leaf_windows P_ ((struct window *, struct window **, int)); | |
65 | static void window_scroll P_ ((Lisp_Object, int, int, int)); | |
66 | static void window_scroll_pixel_based P_ ((Lisp_Object, int, int, int)); | |
67 | static void window_scroll_line_based P_ ((Lisp_Object, int, int, int)); | |
047aaeb9 MR |
68 | static int window_min_size_1 P_ ((struct window *, int, int)); |
69 | static int window_min_size_2 P_ ((struct window *, int, int)); | |
70 | static int window_min_size P_ ((struct window *, int, int, int, int *)); | |
5fe0b054 | 71 | static void size_window P_ ((Lisp_Object, int, int, int, int, int)); |
f95464e4 | 72 | static int freeze_window_start P_ ((struct window *, void *)); |
f984d4fc | 73 | static int window_fixed_size_p P_ ((struct window *, int, int)); |
56ebfae2 | 74 | static void enlarge_window P_ ((Lisp_Object, int, int)); |
67492200 | 75 | static Lisp_Object window_list P_ ((void)); |
f95464e4 | 76 | static int add_window_to_list P_ ((struct window *, void *)); |
118ea242 GM |
77 | static int candidate_window_p P_ ((Lisp_Object, Lisp_Object, Lisp_Object, |
78 | Lisp_Object)); | |
67492200 GM |
79 | static Lisp_Object next_window P_ ((Lisp_Object, Lisp_Object, |
80 | Lisp_Object, int)); | |
81 | static void decode_next_window_args P_ ((Lisp_Object *, Lisp_Object *, | |
82 | Lisp_Object *)); | |
f95464e4 GM |
83 | static int foreach_window_1 P_ ((struct window *, |
84 | int (* fn) (struct window *, void *), | |
85 | void *)); | |
cd2904bd | 86 | static Lisp_Object window_list_1 P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); |
b7354ddf | 87 | |
7ab12479 JB |
88 | /* This is the window in which the terminal's cursor should |
89 | be left when nothing is being done with it. This must | |
90 | always be a leaf window, and its buffer is selected by | |
91 | the top level editing loop at the end of each command. | |
92 | ||
93 | This value is always the same as | |
44fa5b1e | 94 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
95 | |
96 | Lisp_Object selected_window; | |
97 | ||
67492200 GM |
98 | /* A list of all windows for use by next_window and Fwindow_list. |
99 | Functions creating or deleting windows should invalidate this cache | |
100 | by setting it to nil. */ | |
101 | ||
102 | Lisp_Object Vwindow_list; | |
103 | ||
5500c422 GM |
104 | /* The mini-buffer window of the selected frame. |
105 | Note that you cannot test for mini-bufferness of an arbitrary window | |
106 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 | 107 | the selected window. */ |
5500c422 | 108 | |
7ab12479 JB |
109 | Lisp_Object minibuf_window; |
110 | ||
3f49fddc KS |
111 | /* Non-nil means it is the window whose mode line should be |
112 | shown as the selected window when the minibuffer is selected. */ | |
113 | ||
3dbab091 | 114 | Lisp_Object minibuf_selected_window; |
3f49fddc | 115 | |
7ab12479 | 116 | /* Non-nil means it is the window for C-M-v to scroll |
5500c422 GM |
117 | when the mini-buffer is selected. */ |
118 | ||
7ab12479 JB |
119 | Lisp_Object Vminibuf_scroll_window; |
120 | ||
121 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
5500c422 | 122 | |
7ab12479 JB |
123 | Lisp_Object Vother_window_scroll_buffer; |
124 | ||
7ab12479 | 125 | /* Non-nil means it's function to call to display temp buffers. */ |
5500c422 | 126 | |
7ab12479 JB |
127 | Lisp_Object Vtemp_buffer_show_function; |
128 | ||
e56263e5 KS |
129 | /* Non-zero means line and page scrolling on tall lines (with images) |
130 | does partial scrolling by modifying window-vscroll. */ | |
131 | ||
132 | int auto_window_vscroll_p; | |
133 | ||
cc91894c KS |
134 | /* Non-zero means to use mode-line-inactive face in all windows but the |
135 | selected-window and the minibuffer-scroll-window when the | |
136 | minibuffer is active. */ | |
137 | int mode_line_in_non_selected_windows; | |
26124d5e | 138 | |
7ab12479 | 139 | /* If a window gets smaller than either of these, it is removed. */ |
5500c422 | 140 | |
31ade731 SM |
141 | EMACS_INT window_min_height; |
142 | EMACS_INT window_min_width; | |
7ab12479 JB |
143 | |
144 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
5500c422 | 145 | |
7ab12479 JB |
146 | int pop_up_windows; |
147 | ||
44fa5b1e | 148 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
5500c422 | 149 | |
44fa5b1e | 150 | int pop_up_frames; |
7ab12479 | 151 | |
9c3da604 GM |
152 | /* Nonzero means reuse existing frames for displaying buffers. */ |
153 | ||
154 | int display_buffer_reuse_frames; | |
155 | ||
7ab12479 | 156 | /* Non-nil means use this function instead of default */ |
5500c422 | 157 | |
44fa5b1e | 158 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
159 | |
160 | /* Function to call to handle Fdisplay_buffer. */ | |
5500c422 | 161 | |
7ab12479 JB |
162 | Lisp_Object Vdisplay_buffer_function; |
163 | ||
6529ed87 GM |
164 | /* Non-nil means that Fdisplay_buffer should even the heights of windows. */ |
165 | ||
166 | Lisp_Object Veven_window_heights; | |
167 | ||
a90712c2 | 168 | /* List of buffer *names* for buffers that should have their own frames. */ |
5500c422 | 169 | |
a90712c2 RS |
170 | Lisp_Object Vspecial_display_buffer_names; |
171 | ||
172 | /* List of regexps for buffer names that should have their own frames. */ | |
5500c422 | 173 | |
a90712c2 RS |
174 | Lisp_Object Vspecial_display_regexps; |
175 | ||
176 | /* Function to pop up a special frame. */ | |
5500c422 | 177 | |
a90712c2 RS |
178 | Lisp_Object Vspecial_display_function; |
179 | ||
855d8627 | 180 | /* List of buffer *names* for buffers to appear in selected window. */ |
5500c422 | 181 | |
855d8627 RS |
182 | Lisp_Object Vsame_window_buffer_names; |
183 | ||
184 | /* List of regexps for buffer names to appear in selected window. */ | |
5500c422 | 185 | |
855d8627 RS |
186 | Lisp_Object Vsame_window_regexps; |
187 | ||
a58ec57d | 188 | /* Hook run at end of temp_output_buffer_show. */ |
5500c422 | 189 | |
a58ec57d RS |
190 | Lisp_Object Qtemp_buffer_show_hook; |
191 | ||
37962e60 | 192 | /* Fdisplay_buffer always splits the largest window |
7ab12479 | 193 | if that window is more than this high. */ |
5500c422 | 194 | |
31ade731 | 195 | EMACS_INT split_height_threshold; |
7ab12479 | 196 | |
90ab5c62 SM |
197 | /* How to split windows (horizontally/vertically/hybrid). */ |
198 | ||
199 | Lisp_Object Vsplit_window_preferred_function; | |
200 | ||
7ab12479 | 201 | /* Number of lines of continuity in scrolling by screenfuls. */ |
5500c422 | 202 | |
31ade731 | 203 | EMACS_INT next_screen_context_lines; |
7ab12479 JB |
204 | |
205 | /* Incremented for each window created. */ | |
5500c422 | 206 | |
7ab12479 JB |
207 | static int sequence_number; |
208 | ||
5b03d3c0 | 209 | /* Nonzero after init_window_once has finished. */ |
5500c422 | 210 | |
5b03d3c0 RS |
211 | static int window_initialized; |
212 | ||
543f5fb1 | 213 | /* Hook to run when window config changes. */ |
5500c422 | 214 | |
eeca6f6f SM |
215 | static Lisp_Object Qwindow_configuration_change_hook; |
216 | static Lisp_Object Vwindow_configuration_change_hook; | |
543f5fb1 | 217 | |
d0c38d63 | 218 | /* Non-nil means scroll commands try to put point |
9317a85d | 219 | at the same screen height as previously. */ |
9317a85d | 220 | |
5500c422 GM |
221 | Lisp_Object Vscroll_preserve_screen_position; |
222 | ||
0d384044 RS |
223 | /* Incremented by 1 whenever a window is deleted. */ |
224 | ||
225 | int window_deletion_count; | |
226 | ||
66d43aea LT |
227 | /* Used by the function window_scroll_pixel_based */ |
228 | ||
66fe93d1 | 229 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 230 | |
5500c422 | 231 | #if 0 /* This isn't used anywhere. */ |
91a78190 | 232 | /* Nonzero means we can split a frame even if it is "unsplittable". */ |
eddd51c2 | 233 | static int inhibit_frame_unsplittable; |
5500c422 | 234 | #endif /* 0 */ |
7d601aaa | 235 | |
31ade731 | 236 | extern EMACS_INT scroll_margin; |
9317a85d | 237 | |
dba06815 | 238 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
7ab12479 JB |
239 | \f |
240 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
fdb82f93 PJ |
241 | doc: /* Returns t if OBJECT is a window. */) |
242 | (object) | |
413430c5 | 243 | Lisp_Object object; |
7ab12479 | 244 | { |
413430c5 | 245 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
246 | } |
247 | ||
806b4d9b | 248 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
fdb82f93 | 249 | doc: /* Returns t if OBJECT is a window which is currently visible. */) |
413430c5 EN |
250 | (object) |
251 | Lisp_Object object; | |
605be8af | 252 | { |
9e571f49 | 253 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af JB |
254 | } |
255 | ||
7ab12479 JB |
256 | Lisp_Object |
257 | make_window () | |
258 | { | |
cffec418 | 259 | Lisp_Object val; |
7ab12479 | 260 | register struct window *p; |
cffec418 | 261 | |
26605be9 | 262 | p = allocate_window (); |
2a1893f4 SM |
263 | ++sequence_number; |
264 | XSETFASTINT (p->sequence_number, sequence_number); | |
949cf20f KS |
265 | XSETFASTINT (p->left_col, 0); |
266 | XSETFASTINT (p->top_line, 0); | |
267 | XSETFASTINT (p->total_lines, 0); | |
268 | XSETFASTINT (p->total_cols, 0); | |
d834a2e9 | 269 | XSETFASTINT (p->hscroll, 0); |
ea68264b | 270 | XSETFASTINT (p->min_hscroll, 0); |
949cf20f | 271 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
272 | p->start = Fmake_marker (); |
273 | p->pointm = Fmake_marker (); | |
d834a2e9 | 274 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 275 | p->frame = Qnil; |
7ab12479 JB |
276 | p->display_table = Qnil; |
277 | p->dedicated = Qnil; | |
5500c422 GM |
278 | p->pseudo_window_p = 0; |
279 | bzero (&p->cursor, sizeof (p->cursor)); | |
280 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
281 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
282 | p->desired_matrix = p->current_matrix = 0; | |
7a146de2 | 283 | p->nrows_scale_factor = p->ncols_scale_factor = 1; |
5500c422 | 284 | p->phys_cursor_type = -1; |
4b26579e | 285 | p->phys_cursor_width = -1; |
5500c422 GM |
286 | p->must_be_updated_p = 0; |
287 | XSETFASTINT (p->window_end_vpos, 0); | |
288 | XSETFASTINT (p->window_end_pos, 0); | |
289 | p->window_end_valid = Qnil; | |
290 | p->vscroll = 0; | |
cffec418 | 291 | XSETWINDOW (val, p); |
5500c422 | 292 | XSETFASTINT (p->last_point, 0); |
7bbb5782 | 293 | p->frozen_window_start_p = 0; |
6b448755 | 294 | p->last_cursor_off_p = p->cursor_off_p = 0; |
949cf20f KS |
295 | p->left_margin_cols = Qnil; |
296 | p->right_margin_cols = Qnil; | |
297 | p->left_fringe_width = Qnil; | |
298 | p->right_fringe_width = Qnil; | |
299 | p->fringes_outside_margins = Qnil; | |
300 | p->scroll_bar_width = Qnil; | |
301 | p->vertical_scroll_bar_type = Qt; | |
047aaeb9 | 302 | p->resize_proportionally = Qnil; |
67492200 GM |
303 | |
304 | Vwindow_list = Qnil; | |
7ab12479 JB |
305 | return val; |
306 | } | |
307 | ||
308 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
fdb82f93 PJ |
309 | doc: /* Return the window that the cursor now appears in and commands apply to. */) |
310 | () | |
7ab12479 JB |
311 | { |
312 | return selected_window; | |
313 | } | |
314 | ||
83762ba4 | 315 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
fdb82f93 PJ |
316 | doc: /* Return the window used now for minibuffers. |
317 | If the optional argument FRAME is specified, return the minibuffer window | |
318 | used by that frame. */) | |
319 | (frame) | |
83762ba4 | 320 | Lisp_Object frame; |
7ab12479 | 321 | { |
83762ba4 | 322 | if (NILP (frame)) |
1ae1a37d | 323 | frame = selected_frame; |
b7826503 | 324 | CHECK_LIVE_FRAME (frame); |
83762ba4 | 325 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); |
7ab12479 JB |
326 | } |
327 | ||
605be8af | 328 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
6b61353c KH |
329 | doc: /* Returns non-nil if WINDOW is a minibuffer window. |
330 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 331 | (window) |
7ab12479 JB |
332 | Lisp_Object window; |
333 | { | |
334 | struct window *w = decode_window (window); | |
53bb6b99 | 335 | return MINI_WINDOW_P (w) ? Qt : Qnil; |
81e4d465 MB |
336 | } |
337 | ||
338 | ||
7ab12479 | 339 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
fdb82f93 | 340 | Spos_visible_in_window_p, 0, 3, 0, |
a0a37a6f | 341 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. |
fdb82f93 PJ |
342 | Return nil if that position is scrolled vertically out of view. |
343 | If a character is only partially visible, nil is returned, unless the | |
344 | optional argument PARTIALLY is non-nil. | |
a0a37a6f | 345 | If POS is only out of view because of horizontal scrolling, return non-nil. |
120b7781 | 346 | If POS is t, it specifies the position of the last visible glyph in WINDOW. |
0cc1039f KS |
347 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. |
348 | ||
349 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
5a857365 KS |
350 | return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), |
351 | where X and Y are the pixel coordinates relative to the top left corner | |
352 | of the window. The remaining elements are omitted if the character after | |
353 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
120b7781 | 354 | off-window at the top and bottom of the row, ROWH is the height of the |
7bbc67d2 | 355 | display row, and VPOS is the row number (0-based) containing POS. */) |
fdb82f93 | 356 | (pos, window, partially) |
5cdb3cf3 | 357 | Lisp_Object pos, window, partially; |
7ab12479 JB |
358 | { |
359 | register struct window *w; | |
7ab12479 JB |
360 | register int posint; |
361 | register struct buffer *buf; | |
9a132b1f | 362 | struct text_pos top; |
0cc1039f | 363 | Lisp_Object in_window = Qnil; |
5a857365 | 364 | int rtop, rbot, rowh, vpos, fully_p = 1; |
0cc1039f | 365 | int x, y; |
7ab12479 | 366 | |
f28b75a9 MB |
367 | w = decode_window (window); |
368 | buf = XBUFFER (w->buffer); | |
369 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
370 | ||
120b7781 KS |
371 | if (EQ (pos, Qt)) |
372 | posint = -1; | |
373 | else if (!NILP (pos)) | |
7ab12479 | 374 | { |
b7826503 | 375 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
376 | posint = XINT (pos); |
377 | } | |
f28b75a9 MB |
378 | else if (w == XWINDOW (selected_window)) |
379 | posint = PT; | |
380 | else | |
381 | posint = XMARKER (w->pointm)->charpos; | |
7ab12479 | 382 | |
0cc1039f KS |
383 | /* If position is above window start or outside buffer boundaries, |
384 | or if window start is out of range, position is not visible. */ | |
120b7781 KS |
385 | if ((EQ (pos, Qt) |
386 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
0cc1039f KS |
387 | && CHARPOS (top) >= BUF_BEGV (buf) |
388 | && CHARPOS (top) <= BUF_ZV (buf) | |
5a857365 | 389 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) |
e56263e5 | 390 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) |
0cc1039f KS |
391 | in_window = Qt; |
392 | ||
393 | if (!NILP (in_window) && !NILP (partially)) | |
5a857365 KS |
394 | { |
395 | Lisp_Object part = Qnil; | |
396 | if (!fully_p) | |
397 | part = list4 (make_number (rtop), make_number (rbot), | |
398 | make_number (rowh), make_number (vpos)); | |
399 | in_window = Fcons (make_number (x), | |
400 | Fcons (make_number (y), part)); | |
401 | } | |
402 | ||
9a132b1f | 403 | return in_window; |
7ab12479 | 404 | } |
53bb6b99 | 405 | |
536833ab | 406 | DEFUN ("window-line-height", Fwindow_line_height, |
7bbc67d2 | 407 | Swindow_line_height, 0, 2, 0, |
536833ab KS |
408 | doc: /* Return height in pixels of text line LINE in window WINDOW. |
409 | If WINDOW is nil or omitted, use selected window. | |
410 | ||
7bbc67d2 KS |
411 | Return height of current line if LINE is omitted or nil. Return height of |
412 | header or mode line if LINE is `header-line' and `mode-line'. | |
413 | Otherwise, LINE is a text line number starting from 0. A negative number | |
414 | counts from the end of the window. | |
536833ab | 415 | |
7bbc67d2 | 416 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height |
536833ab | 417 | in pixels of the visible part of the line, VPOS and YPOS are the |
68e67a4e | 418 | vertical position in lines and pixels of the line, relative to the top |
120b7781 | 419 | of the first text line, and OFFBOT is the number of off-window pixels at |
68e67a4e KS |
420 | the bottom of the text line. If there are off-window pixels at the top |
421 | of the (first) text line, YPOS is negative. | |
536833ab KS |
422 | |
423 | Return nil if window display is not up-to-date. In that case, use | |
424 | `pos-visible-in-window-p' to obtain the information. */) | |
425 | (line, window) | |
426 | Lisp_Object line, window; | |
b3a10345 KS |
427 | { |
428 | register struct window *w; | |
429 | register struct buffer *b; | |
430 | struct glyph_row *row, *end_row; | |
536833ab | 431 | int max_y, crop, i, n; |
b3a10345 KS |
432 | |
433 | w = decode_window (window); | |
434 | ||
435 | if (noninteractive | |
b3a10345 | 436 | || w->pseudo_window_p) |
7bbc67d2 | 437 | return Qnil; |
b3a10345 KS |
438 | |
439 | CHECK_BUFFER (w->buffer); | |
440 | b = XBUFFER (w->buffer); | |
441 | ||
442 | /* Fail if current matrix is not up-to-date. */ | |
443 | if (NILP (w->window_end_valid) | |
444 | || current_buffer->clip_changed | |
445 | || current_buffer->prevent_redisplay_optimizations_p | |
446 | || XFASTINT (w->last_modified) < BUF_MODIFF (b) | |
447 | || XFASTINT (w->last_overlay_modified) < BUF_OVERLAY_MODIFF (b)) | |
448 | return Qnil; | |
449 | ||
7bbc67d2 KS |
450 | if (NILP (line)) |
451 | { | |
452 | i = w->cursor.vpos; | |
453 | if (i < 0 || i >= w->current_matrix->nrows | |
454 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
455 | return Qnil; | |
456 | max_y = window_text_bottom_y (w); | |
457 | goto found_row; | |
458 | } | |
459 | ||
536833ab | 460 | if (EQ (line, Qheader_line)) |
b3a10345 | 461 | { |
536833ab KS |
462 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) |
463 | return Qnil; | |
464 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
b3a10345 KS |
465 | if (!row->enabled_p) |
466 | return Qnil; | |
536833ab KS |
467 | return list4 (make_number (row->height), |
468 | make_number (0), make_number (0), | |
469 | make_number (0)); | |
b3a10345 | 470 | } |
536833ab KS |
471 | |
472 | if (EQ (line, Qmode_line)) | |
b3a10345 | 473 | { |
536833ab KS |
474 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); |
475 | if (!row->enabled_p) | |
476 | return Qnil; | |
477 | return list4 (make_number (row->height), | |
478 | make_number (0), /* not accurate */ | |
479 | make_number (WINDOW_HEADER_LINE_HEIGHT (w) | |
480 | + window_text_bottom_y (w)), | |
481 | make_number (0)); | |
482 | } | |
b3a10345 | 483 | |
536833ab | 484 | CHECK_NUMBER (line); |
7bbc67d2 | 485 | n = XINT (line); |
536833ab KS |
486 | |
487 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
488 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
489 | max_y = window_text_bottom_y (w); | |
7bbc67d2 | 490 | i = 0; |
536833ab KS |
491 | |
492 | while ((n < 0 || i < n) | |
493 | && row <= end_row && row->enabled_p | |
494 | && row->y + row->height < max_y) | |
495 | row++, i++; | |
b3a10345 | 496 | |
536833ab KS |
497 | if (row > end_row || !row->enabled_p) |
498 | return Qnil; | |
499 | ||
7bbc67d2 | 500 | if (++n < 0) |
536833ab KS |
501 | { |
502 | if (-n > i) | |
503 | return Qnil; | |
7bbc67d2 KS |
504 | row += n; |
505 | i += n; | |
b3a10345 KS |
506 | } |
507 | ||
7bbc67d2 | 508 | found_row: |
536833ab KS |
509 | crop = max (0, (row->y + row->height) - max_y); |
510 | return list4 (make_number (row->height + min (0, row->y) - crop), | |
7bbc67d2 | 511 | make_number (i), |
536833ab KS |
512 | make_number (row->y), |
513 | make_number (crop)); | |
b3a10345 KS |
514 | } |
515 | ||
536833ab | 516 | |
7ab12479 JB |
517 | \f |
518 | static struct window * | |
519 | decode_window (window) | |
520 | register Lisp_Object window; | |
521 | { | |
265a9e55 | 522 | if (NILP (window)) |
7ab12479 JB |
523 | return XWINDOW (selected_window); |
524 | ||
b7826503 | 525 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
526 | return XWINDOW (window); |
527 | } | |
528 | ||
6b61353c KH |
529 | static struct window * |
530 | decode_any_window (window) | |
531 | register Lisp_Object window; | |
532 | { | |
533 | if (NILP (window)) | |
534 | return XWINDOW (selected_window); | |
535 | ||
536 | CHECK_WINDOW (window); | |
537 | return XWINDOW (window); | |
538 | } | |
539 | ||
7ab12479 | 540 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
c2755926 LT |
541 | doc: /* Return the buffer that WINDOW is displaying. |
542 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 543 | (window) |
7ab12479 JB |
544 | Lisp_Object window; |
545 | { | |
546 | return decode_window (window)->buffer; | |
547 | } | |
548 | ||
549 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
c85322d0 EZ |
550 | doc: /* Return the number of lines in WINDOW (including its mode line). |
551 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 552 | (window) |
7ab12479 JB |
553 | Lisp_Object window; |
554 | { | |
6b61353c | 555 | return decode_any_window (window)->total_lines; |
7ab12479 JB |
556 | } |
557 | ||
558 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
fdb82f93 PJ |
559 | doc: /* Return the number of display columns in WINDOW. |
560 | This is the width that is usable columns available for text in WINDOW. | |
561 | If you want to find out how many columns WINDOW takes up, | |
562 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */) | |
563 | (window) | |
7ab12479 JB |
564 | Lisp_Object window; |
565 | { | |
6b61353c | 566 | return make_number (window_box_text_cols (decode_any_window (window))); |
7ab12479 JB |
567 | } |
568 | ||
35ea56c9 MR |
569 | DEFUN ("window-full-width-p", Fwindow_full_width_p, Swindow_full_width_p, 0, 1, 0, |
570 | doc: /* Return t if WINDOW is as wide as its frame. | |
571 | WINDOW defaults to the selected window. */) | |
572 | (window) | |
573 | Lisp_Object window; | |
574 | { | |
575 | return WINDOW_FULL_WIDTH_P (decode_any_window (window)) ? Qt : Qnil; | |
576 | } | |
577 | ||
7ab12479 | 578 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 EZ |
579 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
580 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 581 | (window) |
7ab12479 JB |
582 | Lisp_Object window; |
583 | { | |
584 | return decode_window (window)->hscroll; | |
585 | } | |
586 | ||
587 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 | 588 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
a0a37a6f | 589 | Return NCOL. NCOL should be zero or positive. |
ebadb1e4 EZ |
590 | |
591 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 592 | window so that the location of point moves off-window. */) |
fdb82f93 | 593 | (window, ncol) |
ea68264b | 594 | Lisp_Object window, ncol; |
7ab12479 | 595 | { |
ea68264b GM |
596 | struct window *w = decode_window (window); |
597 | int hscroll; | |
7ab12479 | 598 | |
b7826503 | 599 | CHECK_NUMBER (ncol); |
ea68264b | 600 | hscroll = max (0, XINT (ncol)); |
177c0ea7 | 601 | |
ea68264b GM |
602 | /* Prevent redisplay shortcuts when changing the hscroll. */ |
603 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 604 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
177c0ea7 | 605 | |
c67fa410 | 606 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
607 | return ncol; |
608 | } | |
609 | ||
190eb263 RS |
610 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
611 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 612 | doc: /* Return WINDOW's redisplay end trigger value. |
c85322d0 | 613 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
614 | See `set-window-redisplay-end-trigger' for more information. */) |
615 | (window) | |
190eb263 RS |
616 | Lisp_Object window; |
617 | { | |
618 | return decode_window (window)->redisplay_end_trigger; | |
619 | } | |
620 | ||
621 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
622 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
623 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
624 | VALUE should be a buffer position (typically a marker) or nil. | |
625 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
626 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
627 | with two arguments: WINDOW, and the end trigger value. | |
628 | Afterwards the end-trigger value is reset to nil. */) | |
629 | (window, value) | |
190eb263 RS |
630 | register Lisp_Object window, value; |
631 | { | |
632 | register struct window *w; | |
633 | ||
634 | w = decode_window (window); | |
635 | w->redisplay_end_trigger = value; | |
636 | return value; | |
637 | } | |
638 | ||
7ab12479 | 639 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 PJ |
640 | doc: /* Return a list of the edge coordinates of WINDOW. |
641 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
c99a9eb3 RS |
642 | RIGHT is one more than the rightmost column occupied by WINDOW, |
643 | and BOTTOM is one more than the bottommost row occupied by WINDOW. | |
644 | The edges include the space used by the window's scroll bar, | |
645 | display margins, fringes, header line, and mode line, if it has them. | |
646 | To get the edges of the actual text area, use `window-inside-edges'. */) | |
fdb82f93 | 647 | (window) |
7ab12479 JB |
648 | Lisp_Object window; |
649 | { | |
6b61353c | 650 | register struct window *w = decode_any_window (window); |
7ab12479 | 651 | |
949cf20f KS |
652 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
653 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), | |
654 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), | |
655 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), | |
656 | Qnil)))); | |
7ab12479 JB |
657 | } |
658 | ||
c99a9eb3 RS |
659 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
660 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
661 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
662 | RIGHT is one more than the rightmost x position occupied by WINDOW, | |
663 | and BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
664 | The pixel edges include the space used by the window's scroll bar, | |
665 | display margins, fringes, header line, and mode line, if it has them. | |
666 | To get the edges of the actual text area, use `window-inside-pixel-edges'. */) | |
667 | (window) | |
668 | Lisp_Object window; | |
669 | { | |
6b61353c | 670 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
671 | |
672 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w)), | |
673 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w)), | |
674 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w)), | |
675 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w)), | |
676 | Qnil)))); | |
677 | } | |
678 | ||
679 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, | |
680 | doc: /* Return a list of the edge coordinates of WINDOW. | |
681 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
682 | RIGHT is one more than the rightmost column used by text in WINDOW, | |
683 | and BOTTOM is one more than the bottommost row used by text in WINDOW. | |
684 | The inside edges do not include the space used by the window's scroll bar, | |
685 | display margins, fringes, header line, and/or mode line. */) | |
686 | (window) | |
687 | Lisp_Object window; | |
688 | { | |
6b61353c | 689 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
690 | |
691 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w) | |
692 | + WINDOW_LEFT_MARGIN_COLS (w) | |
693 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
694 | make_number (WINDOW_TOP_EDGE_LINE (w) | |
695 | + WINDOW_HEADER_LINE_LINES (w)), | |
f3fbdb1f | 696 | make_number (WINDOW_BOX_RIGHT_EDGE_COL (w) |
c99a9eb3 RS |
697 | - WINDOW_RIGHT_MARGIN_COLS (w) |
698 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
699 | make_number (WINDOW_BOTTOM_EDGE_LINE (w) | |
700 | - WINDOW_MODE_LINE_LINES (w))); | |
701 | } | |
702 | ||
703 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
a0a37a6f | 704 | doc: /* Return a list of the edge pixel coordinates of WINDOW. |
c99a9eb3 RS |
705 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. |
706 | RIGHT is one more than the rightmost x position used by text in WINDOW, | |
707 | and BOTTOM is one more than the bottommost y position used by text in WINDOW. | |
708 | The inside edges do not include the space used by the window's scroll bar, | |
709 | display margins, fringes, header line, and/or mode line. */) | |
710 | (window) | |
711 | Lisp_Object window; | |
712 | { | |
6b61353c | 713 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
714 | |
715 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
716 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
717 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
718 | make_number (WINDOW_TOP_EDGE_Y (w) | |
719 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
f3fbdb1f | 720 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) |
c99a9eb3 RS |
721 | - WINDOW_RIGHT_MARGIN_WIDTH (w) |
722 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
723 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
724 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
725 | } | |
726 | ||
fbad6f9a | 727 | /* Test if the character at column *X, row *Y is within window W. |
341f3858 | 728 | If it is not, return ON_NOTHING; |
d5783c40 JB |
729 | if it is in the window's text area, |
730 | set *x and *y to its location relative to the upper left corner | |
731 | of the window, and | |
341f3858 KS |
732 | return ON_TEXT; |
733 | if it is on the window's modeline, return ON_MODE_LINE; | |
d5783c40 | 734 | if it is on the border between the window and its right sibling, |
341f3858 | 735 | return ON_VERTICAL_BORDER. |
6487f669 RS |
736 | if it is on a scroll bar, |
737 | return ON_SCROLL_BAR. | |
341f3858 | 738 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 739 | if it is in left or right fringe of the window, |
341f3858 KS |
740 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE, and convert *X and *Y |
741 | to window-relative coordinates; | |
49b996e7 | 742 | if it is in the marginal area to the left/right of the window, |
341f3858 KS |
743 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN, and convert *X and *Y |
744 | to window-relative coordinates. | |
5500c422 GM |
745 | |
746 | X and Y are frame relative pixel coordinates. */ | |
747 | ||
7442878f | 748 | static enum window_part |
d5783c40 JB |
749 | coordinates_in_window (w, x, y) |
750 | register struct window *w; | |
751 | register int *x, *y; | |
752 | { | |
b0228ace GM |
753 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
754 | int left_x, right_x, top_y, bottom_y; | |
7442878f | 755 | enum window_part part; |
949cf20f KS |
756 | int ux = FRAME_COLUMN_WIDTH (f); |
757 | int x0 = WINDOW_LEFT_EDGE_X (w); | |
758 | int x1 = WINDOW_RIGHT_EDGE_X (w); | |
dad75588 GM |
759 | /* The width of the area where the vertical line can be dragged. |
760 | (Between mode lines for instance. */ | |
761 | int grabbable_width = ux; | |
949cf20f | 762 | int lmargin_width, rmargin_width, text_left, text_right; |
b0228ace | 763 | |
466539bc EZ |
764 | /* In what's below, we subtract 1 when computing right_x because we |
765 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
766 | if (w->pseudo_window_p) |
767 | { | |
768 | left_x = 0; | |
949cf20f KS |
769 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
770 | top_y = WINDOW_TOP_EDGE_Y (w); | |
771 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 GM |
772 | } |
773 | else | |
774 | { | |
949cf20f KS |
775 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
776 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
777 | top_y = WINDOW_TOP_EDGE_Y (w); | |
778 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 | 779 | } |
37962e60 | 780 | |
949cf20f KS |
781 | /* Outside any interesting row? */ |
782 | if (*y < top_y || *y >= bottom_y) | |
783 | return ON_NOTHING; | |
784 | ||
1cb794ba GM |
785 | /* On the mode line or header line? If it's near the start of |
786 | the mode or header line of window that's has a horizontal | |
787 | sibling, say it's on the vertical line. That's to be able | |
788 | to resize windows horizontally in case we're using toolkit | |
789 | scroll bars. */ | |
b0228ace | 790 | |
1cb794ba | 791 | if (WINDOW_WANTS_MODELINE_P (w) |
6b61353c | 792 | && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)) |
1cb794ba | 793 | { |
949cf20f KS |
794 | part = ON_MODE_LINE; |
795 | ||
796 | header_vertical_border_check: | |
b0228ace GM |
797 | /* We're somewhere on the mode line. We consider the place |
798 | between mode lines of horizontally adjacent mode lines | |
799 | as the vertical border. If scroll bars on the left, | |
800 | return the right window. */ | |
949cf20f KS |
801 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) |
802 | || WINDOW_RIGHTMOST_P (w)) | |
b0228ace | 803 | { |
1ea40aa2 | 804 | if (!WINDOW_LEFTMOST_P (w) && eabs (*x - x0) < grabbable_width) |
f8c62b70 | 805 | { |
3f489dc7 KS |
806 | /* Convert X and Y to window relative coordinates. |
807 | Vertical border is at the left edge of window. */ | |
f8c62b70 NR |
808 | *x = max (0, *x - x0); |
809 | *y -= top_y; | |
810 | return ON_VERTICAL_BORDER; | |
811 | } | |
b0228ace | 812 | } |
79fd290e | 813 | else |
b0228ace | 814 | { |
1ea40aa2 | 815 | if (eabs (*x - x1) < grabbable_width) |
f8c62b70 | 816 | { |
3f489dc7 KS |
817 | /* Convert X and Y to window relative coordinates. |
818 | Vertical border is at the right edge of window. */ | |
f8c62b70 NR |
819 | *x = min (x1, *x) - x0; |
820 | *y -= top_y; | |
821 | return ON_VERTICAL_BORDER; | |
822 | } | |
b0228ace | 823 | } |
949cf20f | 824 | |
cb639b8f KS |
825 | if (*x < x0 || *x >= x1) |
826 | return ON_NOTHING; | |
827 | ||
a5303820 KS |
828 | /* Convert X and Y to window relative coordinates. |
829 | Mode line starts at left edge of window. */ | |
830 | *x -= x0; | |
831 | *y -= top_y; | |
949cf20f | 832 | return part; |
b0228ace | 833 | } |
949cf20f KS |
834 | |
835 | if (WINDOW_WANTS_HEADER_LINE_P (w) | |
949cf20f | 836 | && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) |
1cb794ba | 837 | { |
949cf20f KS |
838 | part = ON_HEADER_LINE; |
839 | goto header_vertical_border_check; | |
1cb794ba | 840 | } |
949cf20f | 841 | |
cb639b8f KS |
842 | if (*x < x0 || *x >= x1) |
843 | return ON_NOTHING; | |
844 | ||
949cf20f KS |
845 | /* Outside any interesting column? */ |
846 | if (*x < left_x || *x > right_x) | |
4d1add72 KS |
847 | { |
848 | *y -= top_y; | |
849 | return ON_SCROLL_BAR; | |
850 | } | |
949cf20f KS |
851 | |
852 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
853 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 854 | |
949cf20f KS |
855 | text_left = window_box_left (w, TEXT_AREA); |
856 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
857 | ||
858 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 859 | { |
447e9da0 | 860 | if (!w->pseudo_window_p |
949cf20f | 861 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 862 | && !WINDOW_RIGHTMOST_P (w) |
1ea40aa2 | 863 | && (eabs (*x - right_x) < grabbable_width)) |
f8c62b70 | 864 | { |
3f489dc7 KS |
865 | /* Convert X and Y to window relative coordinates. |
866 | Vertical border is at the right edge of window. */ | |
f8c62b70 NR |
867 | *x = min (right_x, *x) - left_x; |
868 | *y -= top_y; | |
869 | return ON_VERTICAL_BORDER; | |
870 | } | |
fbad6f9a | 871 | } |
447e9da0 GM |
872 | else |
873 | { | |
874 | /* Need to say "*x > right_x" rather than >=, since on character | |
875 | terminals, the vertical line's x coordinate is right_x. */ | |
949cf20f KS |
876 | if (!w->pseudo_window_p |
877 | && !WINDOW_RIGHTMOST_P (w) | |
878 | && *x > right_x - ux) | |
b0228ace GM |
879 | { |
880 | /* On the border on the right side of the window? Assume that | |
881 | this area begins at RIGHT_X minus a canonical char width. */ | |
f8c62b70 NR |
882 | *x = min (right_x, *x) - left_x; |
883 | *y -= top_y; | |
949cf20f | 884 | return ON_VERTICAL_BORDER; |
b0228ace | 885 | } |
447e9da0 | 886 | } |
b0228ace | 887 | |
949cf20f KS |
888 | if (*x < text_left) |
889 | { | |
890 | if (lmargin_width > 0 | |
891 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
892 | ? (*x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) | |
893 | : (*x < left_x + lmargin_width))) | |
a5303820 | 894 | { |
6b61353c | 895 | *x -= left_x; |
a5303820 KS |
896 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) |
897 | *x -= WINDOW_LEFT_FRINGE_WIDTH (w); | |
898 | *y -= top_y; | |
899 | return ON_LEFT_MARGIN; | |
900 | } | |
949cf20f KS |
901 | |
902 | /* Convert X and Y to window-relative pixel coordinates. */ | |
903 | *x -= left_x; | |
904 | *y -= top_y; | |
905 | return ON_LEFT_FRINGE; | |
906 | } | |
907 | ||
908 | if (*x >= text_right) | |
909 | { | |
910 | if (rmargin_width > 0 | |
911 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
912 | ? (*x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) | |
913 | : (*x >= right_x - rmargin_width))) | |
a5303820 | 914 | { |
66d41723 KS |
915 | *x -= right_x - rmargin_width; |
916 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
917 | *x += WINDOW_RIGHT_FRINGE_WIDTH (w); | |
a5303820 KS |
918 | *y -= top_y; |
919 | return ON_RIGHT_MARGIN; | |
920 | } | |
949cf20f KS |
921 | |
922 | /* Convert X and Y to window-relative pixel coordinates. */ | |
923 | *x -= left_x + WINDOW_LEFT_FRINGE_WIDTH (w); | |
924 | *y -= top_y; | |
925 | return ON_RIGHT_FRINGE; | |
926 | } | |
927 | ||
928 | /* Everything special ruled out - must be on text area */ | |
66d41723 | 929 | *x -= text_left; |
949cf20f KS |
930 | *y -= top_y; |
931 | return ON_TEXT; | |
d5783c40 JB |
932 | } |
933 | ||
b0228ace | 934 | |
d5783c40 | 935 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
936 | Scoordinates_in_window_p, 2, 2, 0, |
937 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
938 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
939 | measured in characters from the upper-left corner of the frame. | |
940 | \(0 . 0) denotes the character in the upper left corner of the | |
941 | frame. | |
942 | If COORDINATES are in the text portion of WINDOW, | |
943 | the coordinates relative to the window are returned. | |
944 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
945 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
946 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
947 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 948 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
949 | `vertical-line' is returned. |
950 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
951 | or `right-margin' is returned. */) | |
fdb82f93 | 952 | (coordinates, window) |
d5783c40 JB |
953 | register Lisp_Object coordinates, window; |
954 | { | |
5500c422 GM |
955 | struct window *w; |
956 | struct frame *f; | |
d5783c40 | 957 | int x, y; |
5500c422 | 958 | Lisp_Object lx, ly; |
d5783c40 | 959 | |
6b61353c | 960 | CHECK_WINDOW (window); |
5500c422 GM |
961 | w = XWINDOW (window); |
962 | f = XFRAME (w->frame); | |
b7826503 | 963 | CHECK_CONS (coordinates); |
5500c422 GM |
964 | lx = Fcar (coordinates); |
965 | ly = Fcdr (coordinates); | |
b7826503 PJ |
966 | CHECK_NUMBER_OR_FLOAT (lx); |
967 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
968 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
969 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 GM |
970 | |
971 | switch (coordinates_in_window (w, &x, &y)) | |
d5783c40 | 972 | { |
7442878f | 973 | case ON_NOTHING: |
d5783c40 JB |
974 | return Qnil; |
975 | ||
7442878f GM |
976 | case ON_TEXT: |
977 | /* X and Y are now window relative pixel coordinates. Convert | |
978 | them to canonical char units before returning them. */ | |
949cf20f KS |
979 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
980 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 981 | |
7442878f | 982 | case ON_MODE_LINE: |
d5783c40 | 983 | return Qmode_line; |
37962e60 | 984 | |
7442878f | 985 | case ON_VERTICAL_BORDER: |
e5d77022 | 986 | return Qvertical_line; |
d5783c40 | 987 | |
7442878f | 988 | case ON_HEADER_LINE: |
045dee35 | 989 | return Qheader_line; |
5500c422 | 990 | |
7442878f GM |
991 | case ON_LEFT_FRINGE: |
992 | return Qleft_fringe; | |
177c0ea7 | 993 | |
7442878f GM |
994 | case ON_RIGHT_FRINGE: |
995 | return Qright_fringe; | |
fbad6f9a | 996 | |
49b996e7 GM |
997 | case ON_LEFT_MARGIN: |
998 | return Qleft_margin; | |
177c0ea7 | 999 | |
49b996e7 GM |
1000 | case ON_RIGHT_MARGIN: |
1001 | return Qright_margin; | |
1002 | ||
6487f669 RS |
1003 | case ON_SCROLL_BAR: |
1004 | /* Historically we are supposed to return nil in this case. */ | |
1005 | return Qnil; | |
1006 | ||
d5783c40 JB |
1007 | default: |
1008 | abort (); | |
1009 | } | |
1010 | } | |
1011 | ||
67492200 GM |
1012 | |
1013 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
1014 | Check if window W contains coordinates specified by USER_DATA which |
1015 | is actually a pointer to a struct check_window_data CW. | |
1016 | ||
1017 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
1018 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 1019 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
1020 | zero from this function to stop iterating over windows. */ |
1021 | ||
1022 | struct check_window_data | |
1023 | { | |
1024 | Lisp_Object *window; | |
341f3858 KS |
1025 | int *x, *y; |
1026 | enum window_part *part; | |
f95464e4 | 1027 | }; |
67492200 GM |
1028 | |
1029 | static int | |
f95464e4 | 1030 | check_window_containing (w, user_data) |
67492200 | 1031 | struct window *w; |
f95464e4 | 1032 | void *user_data; |
67492200 | 1033 | { |
f95464e4 | 1034 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
1035 | enum window_part found; |
1036 | int continue_p = 1; | |
67492200 | 1037 | |
f95464e4 | 1038 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1039 | if (found != ON_NOTHING) |
67492200 | 1040 | { |
341f3858 | 1041 | *cw->part = found; |
f95464e4 | 1042 | XSETWINDOW (*cw->window, w); |
7442878f | 1043 | continue_p = 0; |
67492200 | 1044 | } |
177c0ea7 | 1045 | |
7442878f | 1046 | return continue_p; |
67492200 GM |
1047 | } |
1048 | ||
1049 | ||
5500c422 | 1050 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1051 | return it as a Lisp_Object. |
1052 | ||
1053 | If X, Y is on one of the window's special `window_part' elements, | |
1054 | set *PART to the id of that element, and return X and Y converted | |
1055 | to window relative coordinates in WX and WY. | |
1056 | ||
341f3858 | 1057 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1058 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1059 | ||
1060 | This function was previously implemented with a loop cycling over | |
1061 | windows with Fnext_window, and starting with the frame's selected | |
1062 | window. It turned out that this doesn't work with an | |
1063 | implementation of next_window using Vwindow_list, because | |
1064 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1065 | tree of F when this function is called asynchronously from | |
1066 | note_mouse_highlight. The original loop didn't terminate in this | |
1067 | case. */ | |
5500c422 | 1068 | |
7ab12479 | 1069 | Lisp_Object |
949cf20f | 1070 | window_from_coordinates (f, x, y, part, wx, wy, tool_bar_p) |
67492200 | 1071 | struct frame *f; |
7ab12479 | 1072 | int x, y; |
341f3858 | 1073 | enum window_part *part; |
949cf20f | 1074 | int *wx, *wy; |
9ea173e8 | 1075 | int tool_bar_p; |
7ab12479 | 1076 | { |
67492200 | 1077 | Lisp_Object window; |
f95464e4 | 1078 | struct check_window_data cw; |
341f3858 KS |
1079 | enum window_part dummy; |
1080 | ||
1081 | if (part == 0) | |
1082 | part = &dummy; | |
5500c422 | 1083 | |
67492200 | 1084 | window = Qnil; |
f95464e4 GM |
1085 | cw.window = &window, cw.x = &x, cw.y = &y; cw.part = part; |
1086 | foreach_window (f, check_window_containing, &cw); | |
177c0ea7 | 1087 | |
67492200 GM |
1088 | /* If not found above, see if it's in the tool bar window, if a tool |
1089 | bar exists. */ | |
1090 | if (NILP (window) | |
1091 | && tool_bar_p | |
1092 | && WINDOWP (f->tool_bar_window) | |
949cf20f | 1093 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 |
7442878f GM |
1094 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), &x, &y) |
1095 | != ON_NOTHING)) | |
5500c422 | 1096 | { |
341f3858 | 1097 | *part = ON_TEXT; |
67492200 | 1098 | window = f->tool_bar_window; |
5500c422 | 1099 | } |
37962e60 | 1100 | |
949cf20f KS |
1101 | if (wx) *wx = x; |
1102 | if (wy) *wy = y; | |
1103 | ||
67492200 | 1104 | return window; |
7ab12479 JB |
1105 | } |
1106 | ||
ab17c3f2 | 1107 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 PJ |
1108 | doc: /* Return window containing coordinates X and Y on FRAME. |
1109 | If omitted, FRAME defaults to the currently selected frame. | |
1110 | The top left corner of the frame is considered to be row 0, | |
1111 | column 0. */) | |
1112 | (x, y, frame) | |
1113 | Lisp_Object x, y, frame; | |
7ab12479 | 1114 | { |
5500c422 | 1115 | struct frame *f; |
7ab12479 | 1116 | |
44fa5b1e | 1117 | if (NILP (frame)) |
1ae1a37d | 1118 | frame = selected_frame; |
b7826503 | 1119 | CHECK_LIVE_FRAME (frame); |
5500c422 | 1120 | f = XFRAME (frame); |
7ab12479 | 1121 | |
5500c422 | 1122 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1123 | CHECK_NUMBER_OR_FLOAT (x); |
1124 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1125 | |
177c0ea7 | 1126 | return window_from_coordinates (f, |
2c77cf3b RS |
1127 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1128 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1129 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1130 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
949cf20f | 1131 | 0, 0, 0, 0); |
7ab12479 JB |
1132 | } |
1133 | ||
1134 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1135 | doc: /* Return current value of point in WINDOW. |
c85322d0 EZ |
1136 | WINDOW defaults to the selected window. |
1137 | ||
fdb82f93 PJ |
1138 | For a nonselected window, this is the value point would have |
1139 | if that window were selected. | |
1140 | ||
1141 | Note that, when WINDOW is the selected window and its buffer | |
1142 | is also currently selected, the value returned is the same as (point). | |
1143 | It would be more strictly correct to return the `top-level' value | |
1144 | of point, outside of any save-excursion forms. | |
1145 | But that is hard to define. */) | |
1146 | (window) | |
7ab12479 JB |
1147 | Lisp_Object window; |
1148 | { | |
1149 | register struct window *w = decode_window (window); | |
1150 | ||
1151 | if (w == XWINDOW (selected_window) | |
1152 | && current_buffer == XBUFFER (w->buffer)) | |
1153 | return Fpoint (); | |
1154 | return Fmarker_position (w->pointm); | |
1155 | } | |
1156 | ||
1157 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1158 | doc: /* Return position at which display currently starts in WINDOW. |
c85322d0 | 1159 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
1160 | This is updated by redisplay or by calling `set-window-start'. */) |
1161 | (window) | |
7ab12479 JB |
1162 | Lisp_Object window; |
1163 | { | |
1164 | return Fmarker_position (decode_window (window)->start); | |
1165 | } | |
1166 | ||
8646118f RS |
1167 | /* This is text temporarily removed from the doc string below. |
1168 | ||
fdb82f93 PJ |
1169 | This function returns nil if the position is not currently known. |
1170 | That happens when redisplay is preempted and doesn't finish. | |
1171 | If in that case you want to compute where the end of the window would | |
1172 | have been if redisplay had finished, do this: | |
1173 | (save-excursion | |
1174 | (goto-char (window-start window)) | |
1175 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1176 | (point))") */ |
1177 | ||
478292ed | 1178 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1179 | doc: /* Return position at which display currently ends in WINDOW. |
c85322d0 | 1180 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
1181 | This is updated by redisplay, when it runs to completion. |
1182 | Simply changing the buffer text or setting `window-start' | |
1183 | does not update this value. | |
a0a37a6f LT |
1184 | Return nil if there is no recorded value. \(This can happen if the |
1185 | last redisplay of WINDOW was preempted, and did not finish.) | |
fdb82f93 PJ |
1186 | If UPDATE is non-nil, compute the up-to-date position |
1187 | if it isn't already recorded. */) | |
1188 | (window, update) | |
478292ed | 1189 | Lisp_Object window, update; |
7ab12479 JB |
1190 | { |
1191 | Lisp_Object value; | |
1192 | struct window *w = decode_window (window); | |
5a41ab94 | 1193 | Lisp_Object buf; |
31790df3 | 1194 | struct buffer *b; |
5a41ab94 RS |
1195 | |
1196 | buf = w->buffer; | |
b7826503 | 1197 | CHECK_BUFFER (buf); |
b3a10345 | 1198 | b = XBUFFER (buf); |
5a41ab94 | 1199 | |
8646118f | 1200 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1201 | /* If we don't know the end position, return nil. |
1202 | The user can compute it with vertical-motion if he wants to. | |
1203 | It would be nicer to do it automatically, | |
1204 | but that's so slow that it would probably bother people. */ | |
1205 | if (NILP (w->window_end_valid)) | |
1206 | return Qnil; | |
8646118f | 1207 | #endif |
7250968e | 1208 | |
478292ed RS |
1209 | if (! NILP (update) |
1210 | && ! (! NILP (w->window_end_valid) | |
dfc265a3 | 1211 | && XFASTINT (w->last_modified) >= BUF_MODIFF (b) |
4c9564e8 | 1212 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (b)) |
41791a20 | 1213 | && !noninteractive) |
478292ed | 1214 | { |
cbc099e5 GM |
1215 | struct text_pos startp; |
1216 | struct it it; | |
b3a10345 KS |
1217 | struct buffer *old_buffer = NULL; |
1218 | ||
1219 | /* Cannot use Fvertical_motion because that function doesn't | |
1220 | cope with variable-height lines. */ | |
1221 | if (b != current_buffer) | |
1222 | { | |
1223 | old_buffer = current_buffer; | |
1224 | set_buffer_internal (b); | |
1225 | } | |
2d6d9df0 GM |
1226 | |
1227 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1228 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1229 | `-l' containing a call to `rmail' with subsequent other |
1230 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1231 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 1232 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 1233 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 1234 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 1235 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1236 | else |
cbc099e5 GM |
1237 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
1238 | ||
cbc099e5 GM |
1239 | start_display (&it, w, startp); |
1240 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1241 | if (it.current_y < it.last_visible_y) |
1242 | move_it_past_eol (&it); | |
cbc099e5 | 1243 | value = make_number (IT_CHARPOS (it)); |
177c0ea7 | 1244 | |
99593a9d GM |
1245 | if (old_buffer) |
1246 | set_buffer_internal (old_buffer); | |
478292ed RS |
1247 | } |
1248 | else | |
b3a10345 | 1249 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1250 | |
1251 | return value; | |
1252 | } | |
1253 | ||
1254 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
a0a37a6f LT |
1255 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
1256 | Return POS. */) | |
fdb82f93 | 1257 | (window, pos) |
7ab12479 JB |
1258 | Lisp_Object window, pos; |
1259 | { | |
1260 | register struct window *w = decode_window (window); | |
1261 | ||
b7826503 | 1262 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
1263 | if (w == XWINDOW (selected_window) |
1264 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
1265 | Fgoto_char (pos); |
1266 | else | |
1267 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 1268 | |
0685cb3c GM |
1269 | /* We have to make sure that redisplay updates the window to show |
1270 | the new value of point. */ | |
1271 | if (!EQ (window, selected_window)) | |
799417bd | 1272 | ++windows_or_buffers_changed; |
177c0ea7 | 1273 | |
7ab12479 JB |
1274 | return pos; |
1275 | } | |
1276 | ||
1277 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1278 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
a0a37a6f | 1279 | Return POS. |
fdb82f93 PJ |
1280 | Optional third arg NOFORCE non-nil inhibits next redisplay |
1281 | from overriding motion of point in order to display at this exact start. */) | |
1282 | (window, pos, noforce) | |
7ab12479 JB |
1283 | Lisp_Object window, pos, noforce; |
1284 | { | |
1285 | register struct window *w = decode_window (window); | |
1286 | ||
b7826503 | 1287 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
1288 | set_marker_restricted (w->start, pos, w->buffer); |
1289 | /* this is not right, but much easier than doing what is right. */ | |
1290 | w->start_at_line_beg = Qnil; | |
265a9e55 | 1291 | if (NILP (noforce)) |
7ab12479 JB |
1292 | w->force_start = Qt; |
1293 | w->update_mode_line = Qt; | |
d834a2e9 | 1294 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1295 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
1296 | if (!EQ (window, selected_window)) |
1297 | windows_or_buffers_changed++; | |
ce7fae7d | 1298 | |
7ab12479 JB |
1299 | return pos; |
1300 | } | |
1301 | ||
1302 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
1303 | 1, 1, 0, | |
fdb82f93 PJ |
1304 | doc: /* Return WINDOW's dedicated object, usually t or nil. |
1305 | See also `set-window-dedicated-p'. */) | |
1306 | (window) | |
7ab12479 JB |
1307 | Lisp_Object window; |
1308 | { | |
1309 | return decode_window (window)->dedicated; | |
1310 | } | |
1311 | ||
d207b766 RS |
1312 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1313 | Sset_window_dedicated_p, 2, 2, 0, | |
fdb82f93 PJ |
1314 | doc: /* Control whether WINDOW is dedicated to the buffer it displays. |
1315 | If it is dedicated, Emacs will not automatically change | |
1316 | which buffer appears in it. | |
1317 | The second argument is the new value for the dedication flag; | |
1318 | non-nil means yes. */) | |
1319 | (window, arg) | |
1320 | Lisp_Object window, arg; | |
7ab12479 JB |
1321 | { |
1322 | register struct window *w = decode_window (window); | |
1323 | ||
2d0834cc | 1324 | w->dedicated = arg; |
7ab12479 JB |
1325 | |
1326 | return w->dedicated; | |
1327 | } | |
1328 | ||
1329 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
1330 | 0, 1, 0, | |
c85322d0 EZ |
1331 | doc: /* Return the display-table that WINDOW is using. |
1332 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 1333 | (window) |
7ab12479 JB |
1334 | Lisp_Object window; |
1335 | { | |
1336 | return decode_window (window)->display_table; | |
1337 | } | |
1338 | ||
5500c422 GM |
1339 | /* Get the display table for use on window W. This is either W's |
1340 | display table or W's buffer's display table. Ignore the specified | |
1341 | tables if they are not valid; if no valid table is specified, | |
1342 | return 0. */ | |
7ab12479 | 1343 | |
319315f1 | 1344 | struct Lisp_Char_Table * |
7ab12479 JB |
1345 | window_display_table (w) |
1346 | struct window *w; | |
1347 | { | |
c756cdbe GM |
1348 | struct Lisp_Char_Table *dp = NULL; |
1349 | ||
1350 | if (DISP_TABLE_P (w->display_table)) | |
1351 | dp = XCHAR_TABLE (w->display_table); | |
1352 | else if (BUFFERP (w->buffer)) | |
1353 | { | |
1354 | struct buffer *b = XBUFFER (w->buffer); | |
177c0ea7 | 1355 | |
c756cdbe GM |
1356 | if (DISP_TABLE_P (b->display_table)) |
1357 | dp = XCHAR_TABLE (b->display_table); | |
1358 | else if (DISP_TABLE_P (Vstandard_display_table)) | |
1359 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1360 | } | |
171d003c | 1361 | |
c756cdbe | 1362 | return dp; |
7ab12479 JB |
1363 | } |
1364 | ||
3a2712f9 | 1365 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 PJ |
1366 | doc: /* Set WINDOW's display-table to TABLE. */) |
1367 | (window, table) | |
7ab12479 JB |
1368 | register Lisp_Object window, table; |
1369 | { | |
1370 | register struct window *w; | |
7ab12479 JB |
1371 | |
1372 | w = decode_window (window); | |
1373 | w->display_table = table; | |
1374 | return table; | |
1375 | } | |
1376 | \f | |
1377 | /* Record info on buffer window w is displaying | |
1378 | when it is about to cease to display that buffer. */ | |
dfcf069d | 1379 | static void |
7ab12479 JB |
1380 | unshow_buffer (w) |
1381 | register struct window *w; | |
1382 | { | |
12cae7c0 | 1383 | Lisp_Object buf; |
b73ea88e | 1384 | struct buffer *b; |
7ab12479 | 1385 | |
12cae7c0 | 1386 | buf = w->buffer; |
b73ea88e RS |
1387 | b = XBUFFER (buf); |
1388 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1389 | abort (); |
1390 | ||
573f41ab | 1391 | #if 0 |
7ab12479 JB |
1392 | if (w == XWINDOW (selected_window) |
1393 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1394 | /* Do this except when the selected window's buffer | |
1395 | is being removed from some other window. */ | |
573f41ab RS |
1396 | #endif |
1397 | /* last_window_start records the start position that this buffer | |
1398 | had in the last window to be disconnected from it. | |
1399 | Now that this statement is unconditional, | |
1400 | it is possible for the buffer to be displayed in the | |
1401 | selected window, while last_window_start reflects another | |
1402 | window which was recently showing the same buffer. | |
1403 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1404 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1405 | |
1406 | /* Point in the selected window's buffer | |
1407 | is actually stored in that buffer, and the window's pointm isn't used. | |
1408 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1409 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1410 | /* This line helps to fix Horsley's testbug.el bug. */ | |
8801a864 KR |
1411 | && !(WINDOWP (b->last_selected_window) |
1412 | && w != XWINDOW (b->last_selected_window) | |
719eaeb1 | 1413 | && EQ (buf, XWINDOW (b->last_selected_window)->buffer))) |
b73ea88e RS |
1414 | temp_set_point_both (b, |
1415 | clip_to_bounds (BUF_BEGV (b), | |
1416 | XMARKER (w->pointm)->charpos, | |
1417 | BUF_ZV (b)), | |
1418 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1419 | marker_byte_position (w->pointm), | |
1420 | BUF_ZV_BYTE (b))); | |
177c0ea7 | 1421 | |
8801a864 KR |
1422 | if (WINDOWP (b->last_selected_window) |
1423 | && w == XWINDOW (b->last_selected_window)) | |
719eaeb1 | 1424 | b->last_selected_window = Qnil; |
7ab12479 JB |
1425 | } |
1426 | ||
1427 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 1428 | static void |
7ab12479 JB |
1429 | replace_window (old, replacement) |
1430 | Lisp_Object old, replacement; | |
1431 | { | |
1432 | register Lisp_Object tem; | |
1433 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
1434 | ||
44fa5b1e JB |
1435 | /* If OLD is its frame's root_window, then replacement is the new |
1436 | root_window for that frame. */ | |
7ab12479 | 1437 | |
7f4161e0 | 1438 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 1439 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 | 1440 | |
949cf20f KS |
1441 | p->left_col = o->left_col; |
1442 | p->top_line = o->top_line; | |
1443 | p->total_cols = o->total_cols; | |
1444 | p->total_lines = o->total_lines; | |
5500c422 GM |
1445 | p->desired_matrix = p->current_matrix = 0; |
1446 | p->vscroll = 0; | |
1447 | bzero (&p->cursor, sizeof (p->cursor)); | |
1448 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
1449 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
1450 | p->phys_cursor_type = -1; | |
4b26579e | 1451 | p->phys_cursor_width = -1; |
5500c422 GM |
1452 | p->must_be_updated_p = 0; |
1453 | p->pseudo_window_p = 0; | |
1454 | XSETFASTINT (p->window_end_vpos, 0); | |
1455 | XSETFASTINT (p->window_end_pos, 0); | |
1456 | p->window_end_valid = Qnil; | |
7bbb5782 | 1457 | p->frozen_window_start_p = 0; |
949cf20f | 1458 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
1459 | |
1460 | p->next = tem = o->next; | |
265a9e55 | 1461 | if (!NILP (tem)) |
7ab12479 JB |
1462 | XWINDOW (tem)->prev = replacement; |
1463 | ||
1464 | p->prev = tem = o->prev; | |
265a9e55 | 1465 | if (!NILP (tem)) |
7ab12479 JB |
1466 | XWINDOW (tem)->next = replacement; |
1467 | ||
1468 | p->parent = tem = o->parent; | |
265a9e55 | 1469 | if (!NILP (tem)) |
7ab12479 JB |
1470 | { |
1471 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1472 | XWINDOW (tem)->vchild = replacement; | |
1473 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1474 | XWINDOW (tem)->hchild = replacement; | |
1475 | } | |
1476 | ||
1477 | /*** Here, if replacement is a vertical combination | |
1478 | and so is its new parent, we should make replacement's | |
1479 | children be children of that parent instead. ***/ | |
1480 | } | |
1481 | ||
1482 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
fdb82f93 PJ |
1483 | doc: /* Remove WINDOW from the display. Default is selected window. */) |
1484 | (window) | |
7ab12479 | 1485 | register Lisp_Object window; |
543f5fb1 | 1486 | { |
eeca6f6f SM |
1487 | struct frame *f; |
1488 | if (NILP (window)) | |
1489 | window = selected_window; | |
1490 | f = XFRAME (WINDOW_FRAME (XWINDOW (window))); | |
543f5fb1 RS |
1491 | delete_window (window); |
1492 | ||
eeca6f6f | 1493 | run_window_configuration_change_hook (f); |
543f5fb1 RS |
1494 | |
1495 | return Qnil; | |
1496 | } | |
1497 | ||
5e14b1fc | 1498 | void |
543f5fb1 RS |
1499 | delete_window (window) |
1500 | register Lisp_Object window; | |
7ab12479 JB |
1501 | { |
1502 | register Lisp_Object tem, parent, sib; | |
1503 | register struct window *p; | |
1504 | register struct window *par; | |
951f9df5 | 1505 | struct frame *f; |
7ab12479 | 1506 | |
605be8af JB |
1507 | /* Because this function is called by other C code on non-leaf |
1508 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1509 | so we can't decode_window here. */ | |
eeca6f6f | 1510 | CHECK_WINDOW (window); |
7ab12479 | 1511 | p = XWINDOW (window); |
605be8af | 1512 | |
0d384044 | 1513 | /* It's a no-op to delete an already-deleted window. */ |
605be8af JB |
1514 | if (NILP (p->buffer) |
1515 | && NILP (p->hchild) | |
1516 | && NILP (p->vchild)) | |
296b535c | 1517 | return; |
605be8af | 1518 | |
7ab12479 | 1519 | parent = p->parent; |
265a9e55 | 1520 | if (NILP (parent)) |
7ab12479 JB |
1521 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1522 | par = XWINDOW (parent); | |
1523 | ||
1524 | windows_or_buffers_changed++; | |
67492200 | 1525 | Vwindow_list = Qnil; |
951f9df5 GM |
1526 | f = XFRAME (WINDOW_FRAME (p)); |
1527 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
7ab12479 | 1528 | |
605be8af JB |
1529 | /* Are we trying to delete any frame's selected window? */ |
1530 | { | |
192c3131 | 1531 | Lisp_Object swindow, pwindow; |
605be8af | 1532 | |
0def0403 RS |
1533 | /* See if the frame's selected window is either WINDOW |
1534 | or any subwindow of it, by finding all that window's parents | |
1535 | and comparing each one with WINDOW. */ | |
192c3131 | 1536 | swindow = FRAME_SELECTED_WINDOW (f); |
0def0403 | 1537 | |
192c3131 | 1538 | while (1) |
0def0403 | 1539 | { |
192c3131 RS |
1540 | pwindow = swindow; |
1541 | while (!NILP (pwindow)) | |
1542 | { | |
1543 | if (EQ (window, pwindow)) | |
1544 | break; | |
1545 | pwindow = XWINDOW (pwindow)->parent; | |
1546 | } | |
1547 | ||
1548 | /* If the window being deleted is not a parent of SWINDOW, | |
1549 | then SWINDOW is ok as the new selected window. */ | |
1550 | if (!EQ (window, pwindow)) | |
0def0403 | 1551 | break; |
192c3131 | 1552 | /* Otherwise, try another window for SWINDOW. */ |
3b8c0c70 | 1553 | swindow = Fnext_window (swindow, Qlambda, Qnil); |
192c3131 RS |
1554 | |
1555 | /* If we get back to the frame's selected window, | |
1556 | it means there was no acceptable alternative, | |
1557 | so we cannot delete. */ | |
1558 | if (EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
1559 | error ("Cannot delete window"); | |
0def0403 RS |
1560 | } |
1561 | ||
192c3131 RS |
1562 | /* If we need to change SWINDOW, do it. */ |
1563 | if (! EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
605be8af | 1564 | { |
605be8af JB |
1565 | /* If we're about to delete the selected window on the |
1566 | selected frame, then we should use Fselect_window to select | |
1567 | the new window. On the other hand, if we're about to | |
1568 | delete the selected window on any other frame, we shouldn't do | |
1569 | anything but set the frame's selected_window slot. */ | |
192c3131 | 1570 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) |
14d87dc9 | 1571 | Fselect_window (swindow, Qnil); |
605be8af | 1572 | else |
192c3131 | 1573 | FRAME_SELECTED_WINDOW (f) = swindow; |
605be8af JB |
1574 | } |
1575 | } | |
7ab12479 | 1576 | |
0d384044 RS |
1577 | /* Now we know we can delete this one. */ |
1578 | window_deletion_count++; | |
1579 | ||
7ab12479 JB |
1580 | tem = p->buffer; |
1581 | /* tem is null for dummy parent windows | |
1582 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1583 | if (!NILP (tem)) |
7ab12479 JB |
1584 | { |
1585 | unshow_buffer (p); | |
2d0834cc SM |
1586 | unchain_marker (XMARKER (p->pointm)); |
1587 | unchain_marker (XMARKER (p->start)); | |
7ab12479 JB |
1588 | } |
1589 | ||
05e71564 GM |
1590 | /* Free window glyph matrices. It is sure that they are allocated |
1591 | again when ADJUST_GLYPHS is called. Block input so that expose | |
1592 | events and other events that access glyph matrices are not | |
1593 | processed while we are changing them. */ | |
1594 | BLOCK_INPUT; | |
951f9df5 | 1595 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f))); |
5500c422 | 1596 | |
7ab12479 | 1597 | tem = p->next; |
265a9e55 | 1598 | if (!NILP (tem)) |
7ab12479 JB |
1599 | XWINDOW (tem)->prev = p->prev; |
1600 | ||
1601 | tem = p->prev; | |
265a9e55 | 1602 | if (!NILP (tem)) |
7ab12479 JB |
1603 | XWINDOW (tem)->next = p->next; |
1604 | ||
1605 | if (EQ (window, par->hchild)) | |
1606 | par->hchild = p->next; | |
1607 | if (EQ (window, par->vchild)) | |
1608 | par->vchild = p->next; | |
1609 | ||
1610 | /* Find one of our siblings to give our space to. */ | |
1611 | sib = p->prev; | |
265a9e55 | 1612 | if (NILP (sib)) |
7ab12479 JB |
1613 | { |
1614 | /* If p gives its space to its next sibling, that sibling needs | |
1615 | to have its top/left side pulled back to where p's is. | |
1616 | set_window_{height,width} will re-position the sibling's | |
1617 | children. */ | |
1618 | sib = p->next; | |
949cf20f KS |
1619 | XWINDOW (sib)->top_line = p->top_line; |
1620 | XWINDOW (sib)->left_col = p->left_col; | |
7ab12479 JB |
1621 | } |
1622 | ||
1623 | /* Stretch that sibling. */ | |
265a9e55 | 1624 | if (!NILP (par->vchild)) |
7ab12479 | 1625 | set_window_height (sib, |
949cf20f | 1626 | XFASTINT (XWINDOW (sib)->total_lines) + XFASTINT (p->total_lines), |
7ab12479 | 1627 | 1); |
265a9e55 | 1628 | if (!NILP (par->hchild)) |
7ab12479 | 1629 | set_window_width (sib, |
949cf20f | 1630 | XFASTINT (XWINDOW (sib)->total_cols) + XFASTINT (p->total_cols), |
7ab12479 JB |
1631 | 1); |
1632 | ||
1633 | /* If parent now has only one child, | |
1634 | put the child into the parent's place. */ | |
7ab12479 | 1635 | tem = par->hchild; |
265a9e55 | 1636 | if (NILP (tem)) |
7ab12479 | 1637 | tem = par->vchild; |
5494d7bc | 1638 | if (NILP (XWINDOW (tem)->next)) { |
7ab12479 | 1639 | replace_window (parent, tem); |
5494d7bc JD |
1640 | par = XWINDOW (tem); |
1641 | } | |
605be8af JB |
1642 | |
1643 | /* Since we may be deleting combination windows, we must make sure that | |
1644 | not only p but all its children have been marked as deleted. */ | |
1645 | if (! NILP (p->hchild)) | |
1646 | delete_all_subwindows (XWINDOW (p->hchild)); | |
1647 | else if (! NILP (p->vchild)) | |
1648 | delete_all_subwindows (XWINDOW (p->vchild)); | |
1649 | ||
1650 | /* Mark this window as deleted. */ | |
1651 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 | 1652 | |
5494d7bc JD |
1653 | if (! NILP (par->parent)) |
1654 | par = XWINDOW (par->parent); | |
1655 | ||
1656 | /* Check if we have a v/hchild with a v/hchild. In that case remove | |
1657 | one of them. */ | |
ae12ecd7 | 1658 | |
5494d7bc JD |
1659 | if (! NILP (par->vchild) && ! NILP (XWINDOW (par->vchild)->vchild)) |
1660 | { | |
1661 | p = XWINDOW (par->vchild); | |
1662 | par->vchild = p->vchild; | |
1663 | tem = p->vchild; | |
1664 | } | |
1665 | else if (! NILP (par->hchild) && ! NILP (XWINDOW (par->hchild)->hchild)) | |
1666 | { | |
1667 | p = XWINDOW (par->hchild); | |
1668 | par->hchild = p->hchild; | |
1669 | tem = p->hchild; | |
1670 | } | |
1671 | else | |
1672 | p = 0; | |
1673 | ||
1674 | if (p) | |
1675 | { | |
1676 | while (! NILP (tem)) { | |
1677 | XWINDOW (tem)->parent = p->parent; | |
1678 | if (NILP (XWINDOW (tem)->next)) | |
1679 | break; | |
1680 | tem = XWINDOW (tem)->next; | |
1681 | } | |
1682 | if (! NILP (tem)) { | |
1683 | /* The next of the v/hchild we are removing is now the next of the | |
1684 | last child for the v/hchild: | |
1685 | Before v/hchild -> v/hchild -> next1 -> next2 | |
1686 | | | |
1687 | -> next3 | |
1688 | After: v/hchild -> next1 -> next2 -> next3 | |
1689 | */ | |
1690 | XWINDOW (tem)->next = p->next; | |
1691 | if (! NILP (p->next)) | |
1692 | XWINDOW (p->next)->prev = tem; | |
1693 | } | |
1694 | p->next = p->prev = p->vchild = p->hchild = p->buffer = Qnil; | |
1695 | } | |
1696 | ||
1697 | ||
5500c422 | 1698 | /* Adjust glyph matrices. */ |
951f9df5 | 1699 | adjust_glyphs (f); |
05e71564 | 1700 | UNBLOCK_INPUT; |
7ab12479 | 1701 | } |
67492200 GM |
1702 | |
1703 | ||
7ab12479 | 1704 | \f |
67492200 GM |
1705 | /*********************************************************************** |
1706 | Window List | |
1707 | ***********************************************************************/ | |
1708 | ||
f95464e4 GM |
1709 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1710 | pointer. This is a callback function for foreach_window, used in | |
1711 | function window_list. */ | |
67492200 GM |
1712 | |
1713 | static int | |
f95464e4 | 1714 | add_window_to_list (w, user_data) |
67492200 | 1715 | struct window *w; |
f95464e4 | 1716 | void *user_data; |
67492200 | 1717 | { |
f95464e4 | 1718 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1719 | Lisp_Object window; |
1720 | XSETWINDOW (window, w); | |
212116d6 | 1721 | *list = Fcons (window, *list); |
67492200 GM |
1722 | return 1; |
1723 | } | |
1724 | ||
1725 | ||
1726 | /* Return a list of all windows, for use by next_window. If | |
1727 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1728 | list, cache it in Vwindow_list, and return that. */ | |
1729 | ||
1730 | static Lisp_Object | |
1731 | window_list () | |
1732 | { | |
1733 | if (!CONSP (Vwindow_list)) | |
1734 | { | |
1735 | Lisp_Object tail; | |
212116d6 | 1736 | |
67492200 GM |
1737 | Vwindow_list = Qnil; |
1738 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1739 | { |
1740 | Lisp_Object args[2]; | |
1741 | ||
1742 | /* We are visiting windows in canonical order, and add | |
1743 | new windows at the front of args[1], which means we | |
1744 | have to reverse this list at the end. */ | |
1745 | args[1] = Qnil; | |
1746 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
1747 | args[0] = Vwindow_list; | |
1748 | args[1] = Fnreverse (args[1]); | |
1749 | Vwindow_list = Fnconc (2, args); | |
1750 | } | |
67492200 | 1751 | } |
177c0ea7 | 1752 | |
67492200 GM |
1753 | return Vwindow_list; |
1754 | } | |
1755 | ||
1756 | ||
118ea242 GM |
1757 | /* Value is non-zero if WINDOW satisfies the constraints given by |
1758 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 1759 | |
118ea242 GM |
1760 | MINIBUF t means WINDOW may be minibuffer windows. |
1761 | `lambda' means WINDOW may not be a minibuffer window. | |
1762 | a window means a specific minibuffer window | |
67492200 | 1763 | |
118ea242 GM |
1764 | ALL_FRAMES t means search all frames, |
1765 | nil means search just current frame, | |
1766 | `visible' means search just visible frames, | |
1767 | 0 means search visible and iconified frames, | |
1768 | a window means search the frame that window belongs to, | |
1769 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
1770 | |
1771 | static int | |
118ea242 GM |
1772 | candidate_window_p (window, owindow, minibuf, all_frames) |
1773 | Lisp_Object window, owindow, minibuf, all_frames; | |
67492200 GM |
1774 | { |
1775 | struct window *w = XWINDOW (window); | |
1776 | struct frame *f = XFRAME (w->frame); | |
1777 | int candidate_p = 1; | |
1778 | ||
1779 | if (!BUFFERP (w->buffer)) | |
1780 | candidate_p = 0; | |
1781 | else if (MINI_WINDOW_P (w) | |
1782 | && (EQ (minibuf, Qlambda) | |
1783 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
1784 | { | |
1785 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
1786 | If it is a window, consider only that one. */ | |
1787 | candidate_p = 0; | |
1788 | } | |
118ea242 GM |
1789 | else if (EQ (all_frames, Qt)) |
1790 | candidate_p = 1; | |
67492200 | 1791 | else if (NILP (all_frames)) |
118ea242 GM |
1792 | { |
1793 | xassert (WINDOWP (owindow)); | |
1794 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
1795 | } | |
67492200 GM |
1796 | else if (EQ (all_frames, Qvisible)) |
1797 | { | |
1798 | FRAME_SAMPLE_VISIBILITY (f); | |
de509a60 SM |
1799 | candidate_p = FRAME_VISIBLE_P (f) |
1800 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
1801 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
1802 | ||
67492200 GM |
1803 | } |
1804 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
1805 | { | |
1806 | FRAME_SAMPLE_VISIBILITY (f); | |
ca2d5566 SM |
1807 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
1808 | #ifdef HAVE_X_WINDOWS | |
1809 | /* Yuck!! If we've just created the frame and the | |
1810 | window-manager requested the user to place it | |
1811 | manually, the window may still not be considered | |
1812 | `visible'. I'd argue it should be at least | |
1813 | something like `iconified', but don't know how to do | |
1814 | that yet. --Stef */ | |
1815 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
1816 | && !f->output_data.x->has_been_visible) | |
1817 | #endif | |
de509a60 SM |
1818 | ) |
1819 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
1820 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
67492200 | 1821 | } |
67492200 GM |
1822 | else if (WINDOWP (all_frames)) |
1823 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
1824 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
1825 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
1826 | else if (FRAMEP (all_frames)) |
1827 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
1828 | |
1829 | return candidate_p; | |
1830 | } | |
1831 | ||
1832 | ||
1833 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
1834 | Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and | |
1835 | ALL_FRAMES. */ | |
1836 | ||
1837 | static void | |
1838 | decode_next_window_args (window, minibuf, all_frames) | |
1839 | Lisp_Object *window, *minibuf, *all_frames; | |
1840 | { | |
1841 | if (NILP (*window)) | |
1842 | *window = selected_window; | |
1843 | else | |
b7826503 | 1844 | CHECK_LIVE_WINDOW (*window); |
177c0ea7 | 1845 | |
67492200 GM |
1846 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
1847 | does. */ | |
1848 | if (NILP (*minibuf)) | |
1849 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
1850 | else if (!EQ (*minibuf, Qt)) | |
1851 | *minibuf = Qlambda; | |
177c0ea7 | 1852 | |
67492200 GM |
1853 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
1854 | => count none of them, or a specific minibuffer window (the | |
1855 | active one) to count. */ | |
1856 | ||
1857 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
1858 | if (NILP (*all_frames)) | |
1859 | *all_frames = (!EQ (*minibuf, Qlambda) | |
1860 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
1861 | : Qnil); | |
1862 | else if (EQ (*all_frames, Qvisible)) | |
1863 | ; | |
0f8fe9a2 | 1864 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
1865 | ; |
1866 | else if (FRAMEP (*all_frames)) | |
1867 | ; | |
1868 | else if (!EQ (*all_frames, Qt)) | |
1869 | *all_frames = Qnil; | |
177c0ea7 | 1870 | |
67492200 GM |
1871 | /* Now *ALL_FRAMES is t meaning search all frames, nil meaning |
1872 | search just current frame, `visible' meaning search just visible | |
1873 | frames, 0 meaning search visible and iconified frames, or a | |
1874 | window, meaning search the frame that window belongs to, or a | |
1875 | frame, meaning consider windows on that frame, only. */ | |
1876 | } | |
1877 | ||
1878 | ||
1879 | /* Return the next or previous window of WINDOW in canonical ordering | |
1880 | of windows. NEXT_P non-zero means return the next window. See the | |
1881 | documentation string of next-window for the meaning of MINIBUF and | |
1882 | ALL_FRAMES. */ | |
1883 | ||
1884 | static Lisp_Object | |
1885 | next_window (window, minibuf, all_frames, next_p) | |
1886 | Lisp_Object window, minibuf, all_frames; | |
1887 | int next_p; | |
1888 | { | |
1889 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 1890 | |
67492200 GM |
1891 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
1892 | return the first window on the frame. */ | |
1893 | if (FRAMEP (all_frames) | |
1894 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
1895 | return Fframe_first_window (all_frames); | |
177c0ea7 | 1896 | |
212116d6 | 1897 | if (next_p) |
67492200 GM |
1898 | { |
1899 | Lisp_Object list; | |
177c0ea7 | 1900 | |
67492200 GM |
1901 | /* Find WINDOW in the list of all windows. */ |
1902 | list = Fmemq (window, window_list ()); | |
1903 | ||
1904 | /* Scan forward from WINDOW to the end of the window list. */ | |
1905 | if (CONSP (list)) | |
1906 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 1907 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1908 | break; |
1909 | ||
1910 | /* Scan from the start of the window list up to WINDOW. */ | |
1911 | if (!CONSP (list)) | |
1912 | for (list = Vwindow_list; | |
1913 | CONSP (list) && !EQ (XCAR (list), window); | |
1914 | list = XCDR (list)) | |
118ea242 | 1915 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1916 | break; |
1917 | ||
1918 | if (CONSP (list)) | |
1919 | window = XCAR (list); | |
1920 | } | |
1921 | else | |
1922 | { | |
1923 | Lisp_Object candidate, list; | |
177c0ea7 | 1924 | |
67492200 GM |
1925 | /* Scan through the list of windows for candidates. If there are |
1926 | candidate windows in front of WINDOW, the last one of these | |
1927 | is the one we want. If there are candidates following WINDOW | |
1928 | in the list, again the last one of these is the one we want. */ | |
1929 | candidate = Qnil; | |
1930 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
1931 | { | |
1932 | if (EQ (XCAR (list), window)) | |
1933 | { | |
1934 | if (WINDOWP (candidate)) | |
1935 | break; | |
1936 | } | |
118ea242 GM |
1937 | else if (candidate_window_p (XCAR (list), window, minibuf, |
1938 | all_frames)) | |
67492200 GM |
1939 | candidate = XCAR (list); |
1940 | } | |
1941 | ||
1942 | if (WINDOWP (candidate)) | |
1943 | window = candidate; | |
1944 | } | |
1945 | ||
1946 | return window; | |
1947 | } | |
7ab12479 | 1948 | |
7ab12479 | 1949 | |
26f6279d | 1950 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
fdb82f93 PJ |
1951 | doc: /* Return next window after WINDOW in canonical ordering of windows. |
1952 | If omitted, WINDOW defaults to the selected window. | |
1953 | ||
1954 | Optional second arg MINIBUF t means count the minibuffer window even | |
1955 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1956 | it is active. MINIBUF neither t nor nil means not to count the | |
1957 | minibuffer even if it is active. | |
1958 | ||
1959 | Several frames may share a single minibuffer; if the minibuffer | |
1960 | counts, all windows on all frames that share that minibuffer count | |
1961 | too. Therefore, `next-window' can be used to iterate through the | |
1962 | set of windows even when the minibuffer is on another frame. If the | |
1963 | minibuffer does not count, only windows from WINDOW's frame count. | |
1964 | ||
1965 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1966 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1967 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1968 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1969 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1970 | Anything else means restrict to WINDOW's frame. | |
1971 | ||
1972 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1973 | `next-window' to iterate through the entire cycle of acceptable | |
1974 | windows, eventually ending up back at the window you started with. | |
1975 | `previous-window' traverses the same cycle, in the reverse order. */) | |
1976 | (window, minibuf, all_frames) | |
67492200 | 1977 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1978 | { |
67492200 | 1979 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
1980 | } |
1981 | ||
67492200 | 1982 | |
26f6279d | 1983 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
fdb82f93 PJ |
1984 | doc: /* Return the window preceding WINDOW in canonical ordering of windows. |
1985 | If omitted, WINDOW defaults to the selected window. | |
1986 | ||
1987 | Optional second arg MINIBUF t means count the minibuffer window even | |
1988 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1989 | it is active. MINIBUF neither t nor nil means not to count the | |
1990 | minibuffer even if it is active. | |
1991 | ||
1992 | Several frames may share a single minibuffer; if the minibuffer | |
1993 | counts, all windows on all frames that share that minibuffer count | |
1994 | too. Therefore, `previous-window' can be used to iterate through | |
1995 | the set of windows even when the minibuffer is on another frame. If | |
1996 | the minibuffer does not count, only windows from WINDOW's frame count | |
1997 | ||
1998 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1999 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
2000 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
2001 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
2002 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
2003 | Anything else means restrict to WINDOW's frame. | |
2004 | ||
2005 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
2006 | `previous-window' to iterate through the entire cycle of acceptable | |
2007 | windows, eventually ending up back at the window you started with. | |
2008 | `next-window' traverses the same cycle, in the reverse order. */) | |
2009 | (window, minibuf, all_frames) | |
67492200 | 2010 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 2011 | { |
67492200 | 2012 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2013 | } |
2014 | ||
67492200 | 2015 | |
62c07cc7 | 2016 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
fdb82f93 PJ |
2017 | doc: /* Select the ARG'th different window on this frame. |
2018 | All windows on current frame are arranged in a cyclic order. | |
2019 | This command selects the window ARG steps away in that order. | |
c2755926 | 2020 | A negative ARG moves in the opposite order. The optional second |
8cd0d661 | 2021 | argument ALL-FRAMES has the same meaning as in `next-window', which see. */) |
fdb82f93 | 2022 | (arg, all_frames) |
67492200 | 2023 | Lisp_Object arg, all_frames; |
7ab12479 | 2024 | { |
67492200 GM |
2025 | Lisp_Object window; |
2026 | int i; | |
7ab12479 | 2027 | |
b7826503 | 2028 | CHECK_NUMBER (arg); |
67492200 | 2029 | window = selected_window; |
177c0ea7 | 2030 | |
67492200 GM |
2031 | for (i = XINT (arg); i > 0; --i) |
2032 | window = Fnext_window (window, Qnil, all_frames); | |
2033 | for (; i < 0; ++i) | |
2034 | window = Fprevious_window (window, Qnil, all_frames); | |
50e88778 | 2035 | |
14d87dc9 | 2036 | Fselect_window (window, Qnil); |
7ab12479 JB |
2037 | return Qnil; |
2038 | } | |
67492200 GM |
2039 | |
2040 | ||
2041 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, | |
fdb82f93 PJ |
2042 | doc: /* Return a list of windows on FRAME, starting with WINDOW. |
2043 | FRAME nil or omitted means use the selected frame. | |
2044 | WINDOW nil or omitted means use the selected window. | |
2045 | MINIBUF t means include the minibuffer window, even if it isn't active. | |
2046 | MINIBUF nil or omitted means include the minibuffer window only | |
2047 | if it's active. | |
2048 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2049 | (frame, minibuf, window) | |
cd2904bd GM |
2050 | Lisp_Object frame, minibuf, window; |
2051 | { | |
cd2904bd | 2052 | if (NILP (window)) |
acc6289a SM |
2053 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
2054 | CHECK_WINDOW (window); | |
cd2904bd GM |
2055 | if (NILP (frame)) |
2056 | frame = selected_frame; | |
2057 | ||
2058 | if (!EQ (frame, XWINDOW (window)->frame)) | |
2059 | error ("Window is on a different frame"); | |
2060 | ||
2061 | return window_list_1 (window, minibuf, frame); | |
2062 | } | |
2063 | ||
2064 | ||
2065 | /* Return a list of windows in canonical ordering. Arguments are like | |
2066 | for `next-window'. */ | |
2067 | ||
2068 | static Lisp_Object | |
2069 | window_list_1 (window, minibuf, all_frames) | |
069f5950 | 2070 | Lisp_Object window, minibuf, all_frames; |
67492200 | 2071 | { |
403de3b4 | 2072 | Lisp_Object tail, list, rest; |
67492200 GM |
2073 | |
2074 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2075 | list = Qnil; | |
177c0ea7 | 2076 | |
67492200 | 2077 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2078 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2079 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2080 | |
403de3b4 RS |
2081 | /* Rotate the list to start with WINDOW. */ |
2082 | list = Fnreverse (list); | |
2083 | rest = Fmemq (window, list); | |
2084 | if (!NILP (rest) && !EQ (rest, list)) | |
2085 | { | |
1725a7c9 | 2086 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2087 | ; |
2088 | XSETCDR (tail, Qnil); | |
2089 | list = nconc2 (rest, list); | |
2090 | } | |
2091 | return list; | |
67492200 GM |
2092 | } |
2093 | ||
2094 | ||
7ab12479 JB |
2095 | \f |
2096 | /* Look at all windows, performing an operation specified by TYPE | |
2097 | with argument OBJ. | |
75d8f668 | 2098 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2099 | Qnil, look at just the selected frame; |
89bca612 | 2100 | Qvisible, look at visible frames; |
75d8f668 | 2101 | a frame, just look at windows on that frame. |
85fe3b5e | 2102 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2103 | |
2104 | enum window_loop | |
2105 | { | |
2106 | WINDOW_LOOP_UNUSED, | |
2107 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
2108 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
2109 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
2110 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
2111 | GET_LARGEST_WINDOW, | |
3f8ab7bd | 2112 | UNSHOW_BUFFER, /* Arg is buffer */ |
6b61353c | 2113 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ |
3f8ab7bd | 2114 | CHECK_ALL_WINDOWS |
7ab12479 JB |
2115 | }; |
2116 | ||
2117 | static Lisp_Object | |
44fa5b1e | 2118 | window_loop (type, obj, mini, frames) |
7ab12479 | 2119 | enum window_loop type; |
118ea242 | 2120 | Lisp_Object obj, frames; |
7ab12479 JB |
2121 | int mini; |
2122 | { | |
118ea242 GM |
2123 | Lisp_Object window, windows, best_window, frame_arg; |
2124 | struct frame *f; | |
ffdc852d | 2125 | struct gcpro gcpro1; |
177c0ea7 | 2126 | |
44fa5b1e JB |
2127 | /* If we're only looping through windows on a particular frame, |
2128 | frame points to that frame. If we're looping through windows | |
2129 | on all frames, frame is 0. */ | |
2130 | if (FRAMEP (frames)) | |
118ea242 | 2131 | f = XFRAME (frames); |
44fa5b1e | 2132 | else if (NILP (frames)) |
118ea242 | 2133 | f = SELECTED_FRAME (); |
7ab12479 | 2134 | else |
118ea242 | 2135 | f = NULL; |
177c0ea7 | 2136 | |
118ea242 | 2137 | if (f) |
89bca612 | 2138 | frame_arg = Qlambda; |
0f8fe9a2 | 2139 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2140 | frame_arg = frames; |
89bca612 RS |
2141 | else if (EQ (frames, Qvisible)) |
2142 | frame_arg = frames; | |
118ea242 GM |
2143 | else |
2144 | frame_arg = Qt; | |
7ab12479 | 2145 | |
89bca612 RS |
2146 | /* frame_arg is Qlambda to stick to one frame, |
2147 | Qvisible to consider all visible frames, | |
2148 | or Qt otherwise. */ | |
2149 | ||
7ab12479 | 2150 | /* Pick a window to start with. */ |
017b2bad | 2151 | if (WINDOWP (obj)) |
118ea242 GM |
2152 | window = obj; |
2153 | else if (f) | |
2154 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2155 | else |
118ea242 | 2156 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2157 | |
cd2904bd | 2158 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2159 | GCPRO1 (windows); |
7ab12479 | 2160 | best_window = Qnil; |
118ea242 | 2161 | |
e67a1dea | 2162 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2163 | { |
118ea242 | 2164 | struct window *w; |
177c0ea7 | 2165 | |
118ea242 GM |
2166 | window = XCAR (windows); |
2167 | w = XWINDOW (window); | |
177c0ea7 | 2168 | |
118ea242 GM |
2169 | /* Note that we do not pay attention here to whether the frame |
2170 | is visible, since Fwindow_list skips non-visible frames if | |
2171 | that is desired, under the control of frame_arg. */ | |
2172 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
2173 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
2174 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
2175 | || (mini && minibuf_level > 0)) |
2176 | switch (type) | |
2177 | { | |
2178 | case GET_BUFFER_WINDOW: | |
118ea242 | 2179 | if (EQ (w->buffer, obj) |
5c204627 RS |
2180 | /* Don't find any minibuffer window |
2181 | except the one that is currently in use. */ | |
118ea242 GM |
2182 | && (MINI_WINDOW_P (w) |
2183 | ? EQ (window, minibuf_window) | |
2184 | : 1)) | |
2185 | { | |
5ddc1b75 GM |
2186 | if (NILP (best_window)) |
2187 | best_window = window; | |
2188 | else if (EQ (window, selected_window)) | |
ca2d5566 SM |
2189 | /* Prefer to return selected-window. */ |
2190 | RETURN_UNGCPRO (window); | |
2191 | else if (EQ (Fwindow_frame (window), selected_frame)) | |
2192 | /* Prefer windows on the current frame. */ | |
5ddc1b75 | 2193 | best_window = window; |
118ea242 | 2194 | } |
7ab12479 JB |
2195 | break; |
2196 | ||
2197 | case GET_LRU_WINDOW: | |
20b69789 SM |
2198 | /* `obj' is an integer encoding a bitvector. |
2199 | `obj & 1' means consider only full-width windows. | |
2200 | `obj & 2' means consider also dedicated windows. */ | |
2201 | if (((XINT (obj) & 1) && !WINDOW_FULL_WIDTH_P (w)) | |
3f489dc7 | 2202 | || (!(XINT (obj) & 2) && !NILP (w->dedicated)) |
20b69789 SM |
2203 | /* Minibuffer windows are always ignored. */ |
2204 | || MINI_WINDOW_P (w)) | |
7ab12479 | 2205 | break; |
265a9e55 | 2206 | if (NILP (best_window) |
7ab12479 | 2207 | || (XFASTINT (XWINDOW (best_window)->use_time) |
118ea242 GM |
2208 | > XFASTINT (w->use_time))) |
2209 | best_window = window; | |
7ab12479 JB |
2210 | break; |
2211 | ||
2212 | case DELETE_OTHER_WINDOWS: | |
118ea242 GM |
2213 | if (!EQ (window, obj)) |
2214 | Fdelete_window (window); | |
7ab12479 JB |
2215 | break; |
2216 | ||
2217 | case DELETE_BUFFER_WINDOWS: | |
118ea242 | 2218 | if (EQ (w->buffer, obj)) |
7ab12479 | 2219 | { |
118ea242 | 2220 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
3548e138 RS |
2221 | |
2222 | /* If this window is dedicated, and in a frame of its own, | |
2223 | kill the frame. */ | |
118ea242 GM |
2224 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2225 | && !NILP (w->dedicated) | |
3548e138 | 2226 | && other_visible_frames (f)) |
7ab12479 | 2227 | { |
3548e138 RS |
2228 | /* Skip the other windows on this frame. |
2229 | There might be one, the minibuffer! */ | |
118ea242 GM |
2230 | while (CONSP (XCDR (windows)) |
2231 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2232 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2233 | windows = XCDR (windows); | |
177c0ea7 | 2234 | |
3548e138 | 2235 | /* Now we can safely delete the frame. */ |
118ea242 GM |
2236 | Fdelete_frame (w->frame, Qnil); |
2237 | } | |
2238 | else if (NILP (w->parent)) | |
2239 | { | |
2240 | /* If we're deleting the buffer displayed in the | |
2241 | only window on the frame, find a new buffer to | |
2242 | display there. */ | |
2243 | Lisp_Object buffer; | |
2244 | buffer = Fother_buffer (obj, Qnil, w->frame); | |
949cf20f | 2245 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2246 | if (EQ (window, selected_window)) |
2247 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2248 | } |
2249 | else | |
118ea242 | 2250 | Fdelete_window (window); |
7ab12479 JB |
2251 | } |
2252 | break; | |
2253 | ||
2254 | case GET_LARGEST_WINDOW: | |
20b69789 | 2255 | { /* nil `obj' means to ignore dedicated windows. */ |
118ea242 | 2256 | /* Ignore dedicated windows and minibuffers. */ |
3f489dc7 | 2257 | if (MINI_WINDOW_P (w) || (NILP (obj) && !NILP (w->dedicated))) |
118ea242 | 2258 | break; |
177c0ea7 | 2259 | |
c930dfab | 2260 | if (NILP (best_window)) |
118ea242 | 2261 | best_window = window; |
c930dfab GM |
2262 | else |
2263 | { | |
2264 | struct window *b = XWINDOW (best_window); | |
949cf20f KS |
2265 | if (XFASTINT (w->total_lines) * XFASTINT (w->total_cols) |
2266 | > XFASTINT (b->total_lines) * XFASTINT (b->total_cols)) | |
c930dfab GM |
2267 | best_window = window; |
2268 | } | |
7ab12479 JB |
2269 | } |
2270 | break; | |
2271 | ||
2272 | case UNSHOW_BUFFER: | |
118ea242 | 2273 | if (EQ (w->buffer, obj)) |
7ab12479 | 2274 | { |
118ea242 GM |
2275 | Lisp_Object buffer; |
2276 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 2277 | |
7ab12479 | 2278 | /* Find another buffer to show in this window. */ |
118ea242 | 2279 | buffer = Fother_buffer (obj, Qnil, w->frame); |
177c0ea7 | 2280 | |
38ab08d1 RS |
2281 | /* If this window is dedicated, and in a frame of its own, |
2282 | kill the frame. */ | |
118ea242 GM |
2283 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2284 | && !NILP (w->dedicated) | |
38ab08d1 | 2285 | && other_visible_frames (f)) |
45945a7b RS |
2286 | { |
2287 | /* Skip the other windows on this frame. | |
2288 | There might be one, the minibuffer! */ | |
118ea242 GM |
2289 | while (CONSP (XCDR (windows)) |
2290 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2291 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2292 | windows = XCDR (windows); | |
177c0ea7 | 2293 | |
45945a7b | 2294 | /* Now we can safely delete the frame. */ |
118ea242 | 2295 | Fdelete_frame (w->frame, Qnil); |
45945a7b | 2296 | } |
a5731348 SM |
2297 | else if (!NILP (w->dedicated) && !NILP (w->parent)) |
2298 | { | |
2299 | Lisp_Object window; | |
2300 | XSETWINDOW (window, w); | |
2301 | /* If this window is dedicated and not the only window | |
2302 | in its frame, then kill it. */ | |
2303 | Fdelete_window (window); | |
2304 | } | |
38ab08d1 | 2305 | else |
38ab08d1 RS |
2306 | { |
2307 | /* Otherwise show a different buffer in the window. */ | |
118ea242 | 2308 | w->dedicated = Qnil; |
949cf20f | 2309 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2310 | if (EQ (window, selected_window)) |
2311 | Fset_buffer (w->buffer); | |
38ab08d1 | 2312 | } |
7ab12479 JB |
2313 | } |
2314 | break; | |
3f8ab7bd | 2315 | |
6b61353c KH |
2316 | case REDISPLAY_BUFFER_WINDOWS: |
2317 | if (EQ (w->buffer, obj)) | |
2318 | { | |
2319 | mark_window_display_accurate (window, 0); | |
2320 | w->update_mode_line = Qt; | |
2321 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; | |
2322 | ++update_mode_lines; | |
2323 | best_window = window; | |
2324 | } | |
2325 | break; | |
2326 | ||
3f8ab7bd RS |
2327 | /* Check for a window that has a killed buffer. */ |
2328 | case CHECK_ALL_WINDOWS: | |
118ea242 GM |
2329 | if (! NILP (w->buffer) |
2330 | && NILP (XBUFFER (w->buffer)->name)) | |
3f8ab7bd | 2331 | abort (); |
118ea242 | 2332 | break; |
6bbd7a29 GM |
2333 | |
2334 | case WINDOW_LOOP_UNUSED: | |
2335 | break; | |
7ab12479 | 2336 | } |
7ab12479 | 2337 | } |
7ab12479 | 2338 | |
118ea242 | 2339 | UNGCPRO; |
7ab12479 | 2340 | return best_window; |
37962e60 | 2341 | } |
605be8af | 2342 | |
3f8ab7bd RS |
2343 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2344 | ||
233a4a2c | 2345 | void |
3f8ab7bd RS |
2346 | check_all_windows () |
2347 | { | |
2348 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2349 | } | |
2350 | ||
3cbb13c8 | 2351 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 2, 0, |
fdb82f93 | 2352 | doc: /* Return the window least recently selected or used for display. |
a55ca73c EZ |
2353 | \(LRU means Least Recently Used.) |
2354 | ||
6b61353c | 2355 | Return a full-width window if possible. |
c2755926 | 2356 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2357 | A dedicated window is never a candidate, unless DEDICATED is non-nil, |
2358 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2359 | If optional argument FRAME is `visible', search all visible frames. |
2360 | If FRAME is 0, search all visible and iconified frames. | |
2361 | If FRAME is t, search all frames. | |
2362 | If FRAME is nil, search only the selected frame. | |
2363 | If FRAME is a frame, search only that frame. */) | |
3cbb13c8 SM |
2364 | (frame, dedicated) |
2365 | Lisp_Object frame, dedicated; | |
7ab12479 JB |
2366 | { |
2367 | register Lisp_Object w; | |
2368 | /* First try for a window that is full-width */ | |
20b69789 SM |
2369 | w = window_loop (GET_LRU_WINDOW, |
2370 | NILP (dedicated) ? make_number (1) : make_number (3), | |
2371 | 0, frame); | |
265a9e55 | 2372 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
2373 | return w; |
2374 | /* If none of them, try the rest */ | |
20b69789 SM |
2375 | return window_loop (GET_LRU_WINDOW, |
2376 | NILP (dedicated) ? make_number (0) : make_number (2), | |
2377 | 0, frame); | |
7ab12479 JB |
2378 | } |
2379 | ||
3cbb13c8 | 2380 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 2, 0, |
fdb82f93 | 2381 | doc: /* Return the largest window in area. |
c2755926 | 2382 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2383 | A dedicated window is never a candidate unless DEDICATED is non-nil, |
2384 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2385 | If optional argument FRAME is `visible', search all visible frames. |
2386 | If FRAME is 0, search all visible and iconified frames. | |
2387 | If FRAME is t, search all frames. | |
2388 | If FRAME is nil, search only the selected frame. | |
2389 | If FRAME is a frame, search only that frame. */) | |
3cbb13c8 SM |
2390 | (frame, dedicated) |
2391 | Lisp_Object frame, dedicated; | |
7ab12479 | 2392 | { |
20b69789 | 2393 | return window_loop (GET_LARGEST_WINDOW, dedicated, 0, |
44fa5b1e | 2394 | frame); |
7ab12479 JB |
2395 | } |
2396 | ||
2397 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
fdb82f93 | 2398 | doc: /* Return a window currently displaying BUFFER, or nil if none. |
c2755926 | 2399 | BUFFER can be a buffer or a buffer name. |
fdb82f93 PJ |
2400 | If optional argument FRAME is `visible', search all visible frames. |
2401 | If optional argument FRAME is 0, search all visible and iconified frames. | |
2402 | If FRAME is t, search all frames. | |
2403 | If FRAME is nil, search only the selected frame. | |
2404 | If FRAME is a frame, search only that frame. */) | |
2405 | (buffer, frame) | |
2406 | Lisp_Object buffer, frame; | |
7ab12479 JB |
2407 | { |
2408 | buffer = Fget_buffer (buffer); | |
017b2bad | 2409 | if (BUFFERP (buffer)) |
44fa5b1e | 2410 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
2411 | else |
2412 | return Qnil; | |
2413 | } | |
2414 | ||
2415 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
fdb82f93 PJ |
2416 | 0, 1, "", |
2417 | doc: /* Make WINDOW (or the selected window) fill its frame. | |
2418 | Only the frame WINDOW is on is affected. | |
2419 | This function tries to reduce display jumps | |
2420 | by keeping the text previously visible in WINDOW | |
2421 | in the same place on the frame. Doing this depends on | |
2422 | the value of (window-start WINDOW), so if calling this function | |
2423 | in a program gives strange scrolling, make sure the window-start | |
2424 | value is reasonable when this function is called. */) | |
2425 | (window) | |
7ab12479 JB |
2426 | Lisp_Object window; |
2427 | { | |
2428 | struct window *w; | |
00d3d838 | 2429 | int startpos; |
85fe3b5e | 2430 | int top, new_top; |
7ab12479 | 2431 | |
265a9e55 | 2432 | if (NILP (window)) |
7ab12479 JB |
2433 | window = selected_window; |
2434 | else | |
b7826503 | 2435 | CHECK_LIVE_WINDOW (window); |
7ab12479 | 2436 | w = XWINDOW (window); |
a2b38b3c | 2437 | |
00d3d838 | 2438 | startpos = marker_position (w->start); |
949cf20f | 2439 | top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 2440 | |
a2b38b3c RS |
2441 | if (MINI_WINDOW_P (w) && top > 0) |
2442 | error ("Can't expand minibuffer to full frame"); | |
2443 | ||
70728a80 | 2444 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 2445 | |
00d3d838 KH |
2446 | /* Try to minimize scrolling, by setting the window start to the point |
2447 | will cause the text at the old window start to be at the same place | |
2448 | on the frame. But don't try to do this if the window start is | |
2449 | outside the visible portion (as might happen when the display is | |
2450 | not current, due to typeahead). */ | |
949cf20f | 2451 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
85fe3b5e GM |
2452 | if (new_top != top |
2453 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
00d3d838 KH |
2454 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) |
2455 | { | |
2456 | struct position pos; | |
2457 | struct buffer *obuf = current_buffer; | |
2458 | ||
2459 | Fset_buffer (w->buffer); | |
2460 | /* This computation used to temporarily move point, but that can | |
2461 | have unwanted side effects due to text properties. */ | |
0383eb57 | 2462 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 2463 | |
b73ea88e | 2464 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
85fe3b5e | 2465 | w->window_end_valid = Qnil; |
b73ea88e RS |
2466 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE |
2467 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 2468 | : Qnil); |
80622eec RS |
2469 | /* We need to do this, so that the window-scroll-functions |
2470 | get called. */ | |
4d047f50 | 2471 | w->optional_new_start = Qt; |
00d3d838 KH |
2472 | |
2473 | set_buffer_internal (obuf); | |
2474 | } | |
5500c422 | 2475 | |
7ab12479 JB |
2476 | return Qnil; |
2477 | } | |
2478 | ||
2479 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
fdb82f93 PJ |
2480 | 1, 2, "bDelete windows on (buffer): ", |
2481 | doc: /* Delete all windows showing BUFFER. | |
c2755926 | 2482 | BUFFER must be a buffer or the name of an existing buffer. |
fdb82f93 PJ |
2483 | Optional second argument FRAME controls which frames are affected. |
2484 | If optional argument FRAME is `visible', search all visible frames. | |
2485 | If FRAME is 0, search all visible and iconified frames. | |
2486 | If FRAME is nil, search all frames. | |
2487 | If FRAME is t, search only the selected frame. | |
2488 | If FRAME is a frame, search only that frame. */) | |
2489 | (buffer, frame) | |
26f6279d | 2490 | Lisp_Object buffer, frame; |
7ab12479 | 2491 | { |
26f6279d JB |
2492 | /* FRAME uses t and nil to mean the opposite of what window_loop |
2493 | expects. */ | |
c520265e RS |
2494 | if (NILP (frame)) |
2495 | frame = Qt; | |
2496 | else if (EQ (frame, Qt)) | |
2497 | frame = Qnil; | |
26f6279d | 2498 | |
265a9e55 | 2499 | if (!NILP (buffer)) |
7ab12479 JB |
2500 | { |
2501 | buffer = Fget_buffer (buffer); | |
b7826503 | 2502 | CHECK_BUFFER (buffer); |
26f6279d | 2503 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 | 2504 | } |
177c0ea7 | 2505 | |
7ab12479 JB |
2506 | return Qnil; |
2507 | } | |
2508 | ||
2509 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
fdb82f93 PJ |
2510 | Sreplace_buffer_in_windows, |
2511 | 1, 1, "bReplace buffer in windows: ", | |
c2755926 LT |
2512 | doc: /* Replace BUFFER with some other buffer in all windows showing it. |
2513 | BUFFER may be a buffer or the name of an existing buffer. */) | |
fdb82f93 | 2514 | (buffer) |
7ab12479 JB |
2515 | Lisp_Object buffer; |
2516 | { | |
265a9e55 | 2517 | if (!NILP (buffer)) |
7ab12479 JB |
2518 | { |
2519 | buffer = Fget_buffer (buffer); | |
b7826503 | 2520 | CHECK_BUFFER (buffer); |
7ab12479 JB |
2521 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); |
2522 | } | |
2523 | return Qnil; | |
2524 | } | |
ff58478b RS |
2525 | |
2526 | /* Replace BUFFER with some other buffer in all windows | |
2527 | of all frames, even those on other keyboards. */ | |
2528 | ||
2529 | void | |
2530 | replace_buffer_in_all_windows (buffer) | |
2531 | Lisp_Object buffer; | |
2532 | { | |
27abb84f | 2533 | #ifdef MULTI_KBOARD |
ff58478b RS |
2534 | Lisp_Object tail, frame; |
2535 | ||
ff58478b RS |
2536 | /* A single call to window_loop won't do the job |
2537 | because it only considers frames on the current keyboard. | |
2538 | So loop manually over frames, and handle each one. */ | |
2539 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 2540 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 2541 | #else |
db7f721d | 2542 | window_loop (UNSHOW_BUFFER, buffer, 1, Qt); |
ff58478b RS |
2543 | #endif |
2544 | } | |
7ab12479 JB |
2545 | \f |
2546 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
2547 | |
2548 | /* The smallest acceptable dimensions for a window. Anything smaller | |
2549 | might crash Emacs. */ | |
5500c422 | 2550 | |
a481b3ea | 2551 | #define MIN_SAFE_WINDOW_WIDTH (2) |
dc1ab1ee | 2552 | #define MIN_SAFE_WINDOW_HEIGHT (1) |
a481b3ea | 2553 | |
047aaeb9 MR |
2554 | /* For wp non-zero the total number of columns of window w. Otherwise |
2555 | the total number of lines of w. */ | |
a481b3ea | 2556 | |
047aaeb9 MR |
2557 | #define WINDOW_TOTAL_SIZE(w, wp) \ |
2558 | (wp ? WINDOW_TOTAL_COLS (w) : WINDOW_TOTAL_LINES (w)) | |
a481b3ea JB |
2559 | |
2560 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
2561 | minimum allowable size. */ | |
5500c422 | 2562 | |
605be8af | 2563 | void |
a481b3ea | 2564 | check_frame_size (frame, rows, cols) |
605be8af JB |
2565 | FRAME_PTR frame; |
2566 | int *rows, *cols; | |
a481b3ea | 2567 | { |
628df3bf | 2568 | /* For height, we have to see: |
54b8bcb5 RS |
2569 | how many windows the frame has at minimum (one or two), |
2570 | and whether it has a menu bar or other special stuff at the top. */ | |
2571 | int min_height | |
2572 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
2573 | ? MIN_SAFE_WINDOW_HEIGHT | |
2574 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 2575 | |
5500c422 GM |
2576 | if (FRAME_TOP_MARGIN (frame) > 0) |
2577 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2578 | |
2579 | if (*rows < min_height) | |
2580 | *rows = min_height; | |
2581 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2582 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2583 | } | |
2584 | ||
233a4a2c GM |
2585 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
2586 | check if W's width can be changed, otherwise check W's height. | |
2587 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
2588 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
2589 | either. */ | |
c1636aa6 | 2590 | |
233a4a2c GM |
2591 | static int |
2592 | window_fixed_size_p (w, width_p, check_siblings_p) | |
2593 | struct window *w; | |
2594 | int width_p, check_siblings_p; | |
2595 | { | |
2596 | int fixed_p; | |
2597 | struct window *c; | |
177c0ea7 | 2598 | |
233a4a2c GM |
2599 | if (!NILP (w->hchild)) |
2600 | { | |
2601 | c = XWINDOW (w->hchild); | |
177c0ea7 | 2602 | |
233a4a2c GM |
2603 | if (width_p) |
2604 | { | |
047aaeb9 | 2605 | /* A horizontal combination is fixed-width if all of if its |
233a4a2c GM |
2606 | children are. */ |
2607 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2608 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2609 | fixed_p = c == NULL; | |
2610 | } | |
2611 | else | |
2612 | { | |
047aaeb9 | 2613 | /* A horizontal combination is fixed-height if one of if its |
233a4a2c GM |
2614 | children is. */ |
2615 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2616 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2617 | fixed_p = c != NULL; | |
2618 | } | |
2619 | } | |
2620 | else if (!NILP (w->vchild)) | |
2621 | { | |
2622 | c = XWINDOW (w->vchild); | |
177c0ea7 | 2623 | |
233a4a2c GM |
2624 | if (width_p) |
2625 | { | |
047aaeb9 | 2626 | /* A vertical combination is fixed-width if one of if its |
233a4a2c GM |
2627 | children is. */ |
2628 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2629 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2630 | fixed_p = c != NULL; | |
2631 | } | |
2632 | else | |
2633 | { | |
047aaeb9 | 2634 | /* A vertical combination is fixed-height if all of if its |
233a4a2c GM |
2635 | children are. */ |
2636 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2637 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2638 | fixed_p = c == NULL; | |
2639 | } | |
2640 | } | |
2641 | else if (BUFFERP (w->buffer)) | |
2642 | { | |
3df0580e AS |
2643 | struct buffer *old = current_buffer; |
2644 | Lisp_Object val; | |
177c0ea7 | 2645 | |
3df0580e AS |
2646 | current_buffer = XBUFFER (w->buffer); |
2647 | val = find_symbol_value (Qwindow_size_fixed); | |
2648 | current_buffer = old; | |
a34dfd12 | 2649 | |
3df0580e AS |
2650 | fixed_p = 0; |
2651 | if (!EQ (val, Qunbound)) | |
2652 | { | |
2653 | fixed_p = !NILP (val); | |
177c0ea7 | 2654 | |
3df0580e AS |
2655 | if (fixed_p |
2656 | && ((EQ (val, Qheight) && width_p) | |
2657 | || (EQ (val, Qwidth) && !width_p))) | |
2658 | fixed_p = 0; | |
233a4a2c GM |
2659 | } |
2660 | ||
2661 | /* Can't tell if this one is resizable without looking at | |
2662 | siblings. If all siblings are fixed-size this one is too. */ | |
2663 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2664 | { | |
2665 | Lisp_Object child; | |
177c0ea7 | 2666 | |
9beb8baa | 2667 | for (child = w->prev; WINDOWP (child); child = XWINDOW (child)->prev) |
233a4a2c GM |
2668 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) |
2669 | break; | |
2670 | ||
2671 | if (NILP (child)) | |
9beb8baa | 2672 | for (child = w->next; WINDOWP (child); child = XWINDOW (child)->next) |
233a4a2c GM |
2673 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) |
2674 | break; | |
2675 | ||
2676 | if (NILP (child)) | |
2677 | fixed_p = 1; | |
2678 | } | |
2679 | } | |
2680 | else | |
2681 | fixed_p = 1; | |
2682 | ||
2683 | return fixed_p; | |
2684 | } | |
177c0ea7 | 2685 | |
047aaeb9 MR |
2686 | /* Return minimum size of leaf window W. WIDTH_P non-zero means return |
2687 | the minimum width of W, WIDTH_P zero means return the minimum height | |
2688 | of W. SAFE_P non-zero means ignore window-min-height|width but just | |
2689 | return values that won't crash Emacs and don't hide components like | |
2690 | fringes, scrollbars, or modelines. If WIDTH_P is zero and W is the | |
2691 | minibuffer window, always return 1. */ | |
f1de8c77 MR |
2692 | |
2693 | static int | |
047aaeb9 | 2694 | window_min_size_2 (w, width_p, safe_p) |
f1de8c77 | 2695 | struct window *w; |
047aaeb9 | 2696 | int width_p, safe_p; |
f1de8c77 | 2697 | { |
047aaeb9 MR |
2698 | /* We should consider buffer-local values of window_min_height and |
2699 | window_min_width here. */ | |
f1de8c77 | 2700 | if (width_p) |
047aaeb9 MR |
2701 | { |
2702 | int safe_size = (MIN_SAFE_WINDOW_WIDTH | |
f1de8c77 | 2703 | + WINDOW_FRINGE_COLS (w) |
047aaeb9 MR |
2704 | + WINDOW_SCROLL_BAR_COLS (w)); |
2705 | ||
2706 | return safe_p ? safe_size : max (window_min_width, safe_size); | |
2707 | } | |
f1de8c77 | 2708 | else if (MINI_WINDOW_P (w)) |
047aaeb9 | 2709 | return 1; |
f1de8c77 | 2710 | else |
047aaeb9 MR |
2711 | { |
2712 | int safe_size = (MIN_SAFE_WINDOW_HEIGHT | |
2713 | + ((BUFFERP (w->buffer) | |
2714 | && !NILP (XBUFFER (w->buffer)->mode_line_format)) | |
2715 | ? 1 : 0)); | |
f1de8c77 | 2716 | |
047aaeb9 MR |
2717 | return safe_p ? safe_size : max (window_min_height, safe_size); |
2718 | } | |
f1de8c77 | 2719 | } |
233a4a2c | 2720 | |
047aaeb9 MR |
2721 | /* Return minimum size of window W, not taking fixed-width windows into |
2722 | account. WIDTH_P non-zero means return the minimum width, otherwise | |
2723 | return the minimum height. SAFE_P non-zero means ignore | |
2724 | window-min-height|width but just return values that won't crash Emacs | |
2725 | and don't hide components like fringes, scrollbars, or modelines. If | |
2726 | W is a combination window, compute the minimum size from the minimum | |
2727 | sizes of W's children. */ | |
233a4a2c GM |
2728 | |
2729 | static int | |
047aaeb9 | 2730 | window_min_size_1 (w, width_p, safe_p) |
c1636aa6 | 2731 | struct window *w; |
047aaeb9 | 2732 | int width_p, safe_p; |
c1636aa6 | 2733 | { |
233a4a2c | 2734 | struct window *c; |
c1636aa6 | 2735 | int size; |
177c0ea7 | 2736 | |
233a4a2c GM |
2737 | if (!NILP (w->hchild)) |
2738 | { | |
047aaeb9 | 2739 | /* W is a horizontal combination. */ |
233a4a2c GM |
2740 | c = XWINDOW (w->hchild); |
2741 | size = 0; | |
177c0ea7 | 2742 | |
233a4a2c GM |
2743 | if (width_p) |
2744 | { | |
047aaeb9 MR |
2745 | /* The minimum width of a horizontal combination is the sum of |
2746 | the minimum widths of its children. */ | |
233a4a2c GM |
2747 | while (c) |
2748 | { | |
047aaeb9 | 2749 | size += window_min_size_1 (c, 1, safe_p); |
233a4a2c GM |
2750 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2751 | } | |
2752 | } | |
2753 | else | |
2754 | { | |
047aaeb9 MR |
2755 | /* The minimum height of a horizontal combination is the |
2756 | maximum of the minimum heights of its children. */ | |
233a4a2c GM |
2757 | while (c) |
2758 | { | |
047aaeb9 | 2759 | size = max (window_min_size_1 (c, 0, safe_p), size); |
233a4a2c GM |
2760 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2761 | } | |
2762 | } | |
2763 | } | |
2764 | else if (!NILP (w->vchild)) | |
2765 | { | |
047aaeb9 | 2766 | /* W is a vertical combination. */ |
233a4a2c GM |
2767 | c = XWINDOW (w->vchild); |
2768 | size = 0; | |
177c0ea7 | 2769 | |
233a4a2c GM |
2770 | if (width_p) |
2771 | { | |
047aaeb9 MR |
2772 | /* The minimum width of a vertical combination is the maximum |
2773 | of the minimum widths of its children. */ | |
233a4a2c GM |
2774 | while (c) |
2775 | { | |
047aaeb9 | 2776 | size = max (window_min_size_1 (c, 1, safe_p), size); |
233a4a2c GM |
2777 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2778 | } | |
2779 | } | |
2780 | else | |
2781 | { | |
047aaeb9 MR |
2782 | /* The minimum height of a vertical combination is the sum of |
2783 | the minimum height of its children. */ | |
233a4a2c GM |
2784 | while (c) |
2785 | { | |
047aaeb9 | 2786 | size += window_min_size_1 (c, 0, safe_p); |
233a4a2c GM |
2787 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; |
2788 | } | |
2789 | } | |
2790 | } | |
c1636aa6 | 2791 | else |
047aaeb9 MR |
2792 | /* W is a leaf window. */ |
2793 | size = window_min_size_2 (w, width_p, safe_p); | |
c1636aa6 GM |
2794 | |
2795 | return size; | |
2796 | } | |
2797 | ||
233a4a2c | 2798 | /* Return the minimum size of window W, taking fixed-size windows into |
047aaeb9 MR |
2799 | account. WIDTH_P non-zero means return the minimum width, otherwise |
2800 | return the minimum height. SAFE_P non-zero means ignore | |
2801 | window-min-height|width but just return values that won't crash Emacs | |
2802 | and don't hide components like fringes, scrollbars, or modelines. | |
2803 | IGNORE_FIXED_P non-zero means ignore if W is fixed-size. Set *FIXED | |
2804 | to 1 if W is fixed-size unless FIXED is null. */ | |
7ab12479 | 2805 | |
233a4a2c | 2806 | static int |
047aaeb9 | 2807 | window_min_size (w, width_p, safe_p, ignore_fixed_p, fixed) |
233a4a2c | 2808 | struct window *w; |
047aaeb9 | 2809 | int width_p, safe_p, ignore_fixed_p, *fixed; |
233a4a2c GM |
2810 | { |
2811 | int size, fixed_p; | |
2812 | ||
f984d4fc GM |
2813 | if (ignore_fixed_p) |
2814 | fixed_p = 0; | |
2815 | else | |
2816 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
177c0ea7 | 2817 | |
233a4a2c GM |
2818 | if (fixed) |
2819 | *fixed = fixed_p; | |
177c0ea7 | 2820 | |
233a4a2c | 2821 | if (fixed_p) |
047aaeb9 | 2822 | size = WINDOW_TOTAL_SIZE (w, width_p); |
233a4a2c | 2823 | else |
047aaeb9 | 2824 | size = window_min_size_1 (w, width_p, safe_p); |
177c0ea7 | 2825 | |
233a4a2c GM |
2826 | return size; |
2827 | } | |
2828 | ||
2829 | ||
79fd290e | 2830 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
2831 | Return 1 if window width is ok after adjustment; 0 if window |
2832 | is still too narrow. */ | |
2833 | ||
2834 | static int | |
2835 | adjust_window_margins (w) | |
2836 | struct window *w; | |
2837 | { | |
2838 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
2839 | - WINDOW_FRINGE_COLS (w) | |
2840 | - WINDOW_SCROLL_BAR_COLS (w)); | |
2841 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
2842 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
2843 | ||
2844 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
2845 | return 1; | |
2846 | ||
2847 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
2848 | return 0; | |
2849 | ||
2850 | /* Window's text area is too narrow, but reducing the window | |
2851 | margins will fix that. */ | |
2852 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
2853 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
2854 | { | |
2855 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
2856 | w->left_margin_cols = w->right_margin_cols | |
2857 | = make_number (margin_cols/2); | |
2858 | else | |
2859 | w->right_margin_cols = make_number (margin_cols); | |
2860 | } | |
2861 | else | |
2862 | w->left_margin_cols = make_number (margin_cols); | |
2863 | return 1; | |
2864 | } | |
2865 | ||
047aaeb9 MR |
2866 | /* Calculate new sizes for windows in the list FORWARD when their |
2867 | compound size goes from TOTAL to SIZE. TOTAL must be greater than | |
2868 | SIZE. The number of windows in FORWARD is NCHILDREN, and the number | |
2869 | that can shrink is SHRINKABLE. Fixed-size windows may be shrunk if | |
2870 | and only if RESIZE_FIXED_P is non-zero. WIDTH_P non-zero means | |
2871 | shrink columns, otherwise shrink lines. | |
6b61353c | 2872 | |
047aaeb9 MR |
2873 | SAFE_P zero means windows may be sized down to window-min-height |
2874 | lines (window-min-window columns for WIDTH_P non-zero). SAFE_P | |
2875 | non-zero means windows may be sized down to their minimum safe sizes | |
2876 | taking into account the space needed to display modelines, fringes, | |
2877 | and scrollbars. | |
6b61353c | 2878 | |
047aaeb9 MR |
2879 | This function returns an allocated array of new sizes that the caller |
2880 | must free. A size -1 means the window is fixed and RESIZE_FIXED_P is | |
2881 | zero. A size zero means the window shall be deleted. Array index 0 | |
2882 | refers to the first window in FORWARD, 1 to the second, and so on. | |
2883 | ||
2884 | This function resizes windows proportionally to their size. It also | |
2885 | tries to preserve smaller windows by resizing larger windows before | |
2886 | resizing any window to zero. If resize_proportionally is non-nil for | |
2887 | a specific window, it will attempt to strictly resize that window | |
2888 | proportionally, even at the expense of deleting smaller windows. */ | |
6b61353c | 2889 | static int * |
047aaeb9 MR |
2890 | shrink_windows (total, size, nchildren, shrinkable, resize_fixed_p, |
2891 | forward, width_p, safe_p) | |
2892 | int total, size, nchildren, shrinkable; | |
2893 | int resize_fixed_p, width_p, safe_p; | |
6b61353c KH |
2894 | Lisp_Object forward; |
2895 | { | |
2896 | int available_resize = 0; | |
047aaeb9 | 2897 | int *new_sizes, *min_sizes; |
6b61353c KH |
2898 | struct window *c; |
2899 | Lisp_Object child; | |
2900 | int smallest = total; | |
2901 | int total_removed = 0; | |
2902 | int total_shrink = total - size; | |
2903 | int i; | |
2904 | ||
2905 | new_sizes = xmalloc (sizeof (*new_sizes) * nchildren); | |
047aaeb9 | 2906 | min_sizes = xmalloc (sizeof (*min_sizes) * nchildren); |
6b61353c KH |
2907 | |
2908 | for (i = 0, child = forward; !NILP (child); child = c->next, ++i) | |
2909 | { | |
2910 | int child_size; | |
2911 | ||
2912 | c = XWINDOW (child); | |
047aaeb9 | 2913 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
6b61353c | 2914 | |
047aaeb9 | 2915 | if (!resize_fixed_p && window_fixed_size_p (c, width_p, 0)) |
6b61353c KH |
2916 | new_sizes[i] = -1; |
2917 | else | |
2918 | { | |
2919 | new_sizes[i] = child_size; | |
047aaeb9 MR |
2920 | min_sizes[i] = window_min_size_1 (c, width_p, safe_p); |
2921 | if (child_size > min_sizes[i] | |
2922 | && NILP (c->resize_proportionally)) | |
2923 | available_resize += child_size - min_sizes[i]; | |
6b61353c KH |
2924 | } |
2925 | } | |
2926 | /* We might need to shrink some windows to zero. Find the smallest | |
2927 | windows and set them to 0 until we can fulfil the new size. */ | |
2928 | ||
2929 | while (shrinkable > 1 && size + available_resize < total) | |
2930 | { | |
2931 | for (i = 0; i < nchildren; ++i) | |
2932 | if (new_sizes[i] > 0 && smallest > new_sizes[i]) | |
2933 | smallest = new_sizes[i]; | |
2934 | ||
2935 | for (i = 0; i < nchildren; ++i) | |
2936 | if (new_sizes[i] == smallest) | |
2937 | { | |
2938 | /* Resize this window down to zero. */ | |
2939 | new_sizes[i] = 0; | |
047aaeb9 MR |
2940 | if (smallest > min_sizes[i]) |
2941 | available_resize -= smallest - min_sizes[i]; | |
6b61353c KH |
2942 | available_resize += smallest; |
2943 | --shrinkable; | |
2944 | total_removed += smallest; | |
2945 | ||
ef614e04 JD |
2946 | /* We don't know what the smallest is now. */ |
2947 | smallest = total; | |
2948 | ||
6b61353c KH |
2949 | /* Out of for, just remove one window at the time and |
2950 | check again if we have enough space. */ | |
2951 | break; | |
2952 | } | |
2953 | } | |
2954 | ||
2955 | /* Now, calculate the new sizes. Try to shrink each window | |
2956 | proportional to its size. */ | |
2957 | for (i = 0; i < nchildren; ++i) | |
2958 | { | |
047aaeb9 | 2959 | if (new_sizes[i] > min_sizes[i]) |
6b61353c | 2960 | { |
047aaeb9 MR |
2961 | int to_shrink = total_shrink * new_sizes[i] / total; |
2962 | ||
2963 | if (new_sizes[i] - to_shrink < min_sizes[i]) | |
2964 | to_shrink = new_sizes[i] - min_sizes[i]; | |
6b61353c KH |
2965 | new_sizes[i] -= to_shrink; |
2966 | total_removed += to_shrink; | |
2967 | } | |
2968 | } | |
2969 | ||
2970 | /* Any reminder due to rounding, we just subtract from windows | |
2971 | that are left and still can be shrunk. */ | |
2972 | while (total_shrink > total_removed) | |
2973 | { | |
ef614e04 JD |
2974 | int nonzero_sizes = 0; |
2975 | int nonzero_idx = -1; | |
2976 | ||
2977 | for (i = 0; i < nchildren; ++i) | |
2978 | if (new_sizes[i] > 0) | |
2979 | { | |
2980 | ++nonzero_sizes; | |
2981 | nonzero_idx = i; | |
2982 | } | |
c49a0495 | 2983 | |
6b61353c | 2984 | for (i = 0; i < nchildren; ++i) |
047aaeb9 | 2985 | if (new_sizes[i] > min_sizes[i]) |
6b61353c KH |
2986 | { |
2987 | --new_sizes[i]; | |
2988 | ++total_removed; | |
2989 | ||
2990 | /* Out of for, just shrink one window at the time and | |
2991 | check again if we have enough space. */ | |
2992 | break; | |
2993 | } | |
ef614e04 | 2994 | |
ef614e04 JD |
2995 | /* Special case, only one window left. */ |
2996 | if (nonzero_sizes == 1) | |
2997 | break; | |
2998 | } | |
2999 | ||
3000 | /* Any surplus due to rounding, we add to windows that are left. */ | |
3001 | while (total_shrink < total_removed) | |
3002 | { | |
3003 | for (i = 0; i < nchildren; ++i) | |
3004 | { | |
3005 | if (new_sizes[i] != 0 && total_shrink < total_removed) | |
3006 | { | |
3007 | ++new_sizes[i]; | |
3008 | --total_removed; | |
3009 | break; | |
3010 | } | |
3011 | } | |
6b61353c KH |
3012 | } |
3013 | ||
047aaeb9 MR |
3014 | xfree (min_sizes); |
3015 | ||
6b61353c KH |
3016 | return new_sizes; |
3017 | } | |
949cf20f | 3018 | |
233a4a2c | 3019 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set |
047aaeb9 MR |
3020 | WINDOW's width. Resize WINDOW's children, if any, so that they keep |
3021 | their proportionate size relative to WINDOW. | |
5fe0b054 RS |
3022 | |
3023 | If FIRST_ONLY is 1, change only the first of WINDOW's children when | |
3024 | they are in series. If LAST_ONLY is 1, change only the last of | |
3025 | WINDOW's children when they are in series. | |
3026 | ||
3027 | Propagate WINDOW's top or left edge position to children. Delete | |
047aaeb9 MR |
3028 | windows that become too small unless NODELETE_P is 1. When |
3029 | NODELETE_P equals 2 do not honor settings for window-min-height and | |
3030 | window-min-width when resizing windows but use safe defaults instead. | |
3031 | This should give better behavior when resizing frames. */ | |
233a4a2c GM |
3032 | |
3033 | static void | |
5fe0b054 | 3034 | size_window (window, size, width_p, nodelete_p, first_only, last_only) |
7ab12479 | 3035 | Lisp_Object window; |
233a4a2c | 3036 | int size, width_p, nodelete_p; |
5fe0b054 | 3037 | int first_only, last_only; |
7ab12479 | 3038 | { |
233a4a2c GM |
3039 | struct window *w = XWINDOW (window); |
3040 | struct window *c; | |
3041 | Lisp_Object child, *forward, *sideward; | |
047aaeb9 | 3042 | int old_size = WINDOW_TOTAL_SIZE (w, width_p); |
7ab12479 | 3043 | |
7ae2f10f | 3044 | size = max (0, size); |
177c0ea7 | 3045 | |
047aaeb9 MR |
3046 | /* Delete WINDOW if it's too small. */ |
3047 | if (nodelete_p != 1 && !NILP (w->parent) | |
3048 | && size < window_min_size_1 (w, width_p, nodelete_p == 2)) | |
233a4a2c | 3049 | { |
047aaeb9 MR |
3050 | delete_window (window); |
3051 | return; | |
7ab12479 JB |
3052 | } |
3053 | ||
233a4a2c | 3054 | /* Set redisplay hints. */ |
7ae2f10f GM |
3055 | w->last_modified = make_number (0); |
3056 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 3057 | windows_or_buffers_changed++; |
7ae2f10f | 3058 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 3059 | |
233a4a2c GM |
3060 | if (width_p) |
3061 | { | |
3062 | sideward = &w->vchild; | |
3063 | forward = &w->hchild; | |
949cf20f KS |
3064 | w->total_cols = make_number (size); |
3065 | adjust_window_margins (w); | |
233a4a2c GM |
3066 | } |
3067 | else | |
3068 | { | |
3069 | sideward = &w->hchild; | |
3070 | forward = &w->vchild; | |
949cf20f KS |
3071 | w->total_lines = make_number (size); |
3072 | w->orig_total_lines = Qnil; | |
233a4a2c GM |
3073 | } |
3074 | ||
3075 | if (!NILP (*sideward)) | |
7ab12479 | 3076 | { |
5fe0b054 | 3077 | /* We have a chain of parallel siblings whose size should all change. */ |
233a4a2c | 3078 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 3079 | { |
233a4a2c GM |
3080 | c = XWINDOW (child); |
3081 | if (width_p) | |
949cf20f | 3082 | c->left_col = w->left_col; |
233a4a2c | 3083 | else |
949cf20f | 3084 | c->top_line = w->top_line; |
5fe0b054 RS |
3085 | size_window (child, size, width_p, nodelete_p, |
3086 | first_only, last_only); | |
7ab12479 JB |
3087 | } |
3088 | } | |
5fe0b054 RS |
3089 | else if (!NILP (*forward) && last_only) |
3090 | { | |
3091 | /* Change the last in a series of siblings. */ | |
3092 | Lisp_Object last_child; | |
3093 | int child_size; | |
3094 | ||
3095 | for (child = *forward; !NILP (child); child = c->next) | |
3096 | { | |
3097 | c = XWINDOW (child); | |
3098 | last_child = child; | |
3099 | } | |
3100 | ||
047aaeb9 MR |
3101 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3102 | size_window (last_child, size - old_size + child_size, | |
5fe0b054 RS |
3103 | width_p, nodelete_p, first_only, last_only); |
3104 | } | |
3105 | else if (!NILP (*forward) && first_only) | |
3106 | { | |
3107 | /* Change the first in a series of siblings. */ | |
3108 | int child_size; | |
3109 | ||
3110 | child = *forward; | |
3111 | c = XWINDOW (child); | |
3112 | ||
3113 | if (width_p) | |
3114 | c->left_col = w->left_col; | |
3115 | else | |
3116 | c->top_line = w->top_line; | |
3117 | ||
047aaeb9 MR |
3118 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3119 | size_window (child, size - old_size + child_size, | |
5fe0b054 RS |
3120 | width_p, nodelete_p, first_only, last_only); |
3121 | } | |
233a4a2c | 3122 | else if (!NILP (*forward)) |
7ab12479 | 3123 | { |
233a4a2c GM |
3124 | int fixed_size, each, extra, n; |
3125 | int resize_fixed_p, nfixed; | |
8b6d9dc9 | 3126 | int last_pos, first_pos, nchildren, total; |
6b61353c | 3127 | int *new_sizes = NULL; |
233a4a2c | 3128 | |
5fe0b054 | 3129 | /* Determine the fixed-size portion of this window, and the |
233a4a2c | 3130 | number of child windows. */ |
8b6d9dc9 | 3131 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 3132 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 3133 | { |
8b6d9dc9 | 3134 | int child_size; |
177c0ea7 | 3135 | |
7ab12479 | 3136 | c = XWINDOW (child); |
047aaeb9 | 3137 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
8b6d9dc9 | 3138 | total += child_size; |
177c0ea7 | 3139 | |
233a4a2c GM |
3140 | if (window_fixed_size_p (c, width_p, 0)) |
3141 | { | |
8b6d9dc9 | 3142 | fixed_size += child_size; |
233a4a2c GM |
3143 | ++nfixed; |
3144 | } | |
3145 | } | |
7ab12479 | 3146 | |
233a4a2c GM |
3147 | /* If the new size is smaller than fixed_size, or if there |
3148 | aren't any resizable windows, allow resizing fixed-size | |
3149 | windows. */ | |
3150 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
3151 | ||
6b61353c | 3152 | /* Compute how many lines/columns to add/remove to each child. The |
233a4a2c GM |
3153 | value of extra takes care of rounding errors. */ |
3154 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
6b61353c | 3155 | if (size < total && n > 1) |
047aaeb9 MR |
3156 | new_sizes = shrink_windows (total, size, nchildren, n, |
3157 | resize_fixed_p, *forward, width_p, | |
3158 | nodelete_p == 2); | |
6b61353c KH |
3159 | else |
3160 | { | |
3161 | each = (size - total) / n; | |
3162 | extra = (size - total) - n * each; | |
3163 | } | |
233a4a2c GM |
3164 | |
3165 | /* Compute new children heights and edge positions. */ | |
949cf20f | 3166 | first_pos = width_p ? XINT (w->left_col) : XINT (w->top_line); |
233a4a2c | 3167 | last_pos = first_pos; |
6b61353c | 3168 | for (n = 0, child = *forward; !NILP (child); child = c->next, ++n) |
233a4a2c GM |
3169 | { |
3170 | int new_size, old_size; | |
177c0ea7 | 3171 | |
233a4a2c | 3172 | c = XWINDOW (child); |
047aaeb9 | 3173 | old_size = WINDOW_TOTAL_SIZE (c, width_p); |
233a4a2c | 3174 | new_size = old_size; |
7ab12479 | 3175 | |
233a4a2c GM |
3176 | /* The top or left edge position of this child equals the |
3177 | bottom or right edge of its predecessor. */ | |
3178 | if (width_p) | |
949cf20f | 3179 | c->left_col = make_number (last_pos); |
233a4a2c | 3180 | else |
949cf20f | 3181 | c->top_line = make_number (last_pos); |
7ab12479 | 3182 | |
233a4a2c GM |
3183 | /* If this child can be resized, do it. */ |
3184 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
3185 | { | |
6b61353c | 3186 | new_size = new_sizes ? new_sizes[n] : old_size + each + extra; |
233a4a2c GM |
3187 | extra = 0; |
3188 | } | |
177c0ea7 | 3189 | |
047aaeb9 | 3190 | /* Set new size. Note that size_window also propagates |
233a4a2c GM |
3191 | edge positions to children, so it's not a no-op if we |
3192 | didn't change the child's size. */ | |
5fe0b054 | 3193 | size_window (child, new_size, width_p, 1, first_only, last_only); |
233a4a2c GM |
3194 | |
3195 | /* Remember the bottom/right edge position of this child; it | |
3196 | will be used to set the top/left edge of the next child. */ | |
6b61353c | 3197 | last_pos += new_size; |
7ab12479 | 3198 | } |
233a4a2c | 3199 | |
6b61353c KH |
3200 | if (new_sizes) xfree (new_sizes); |
3201 | ||
233a4a2c GM |
3202 | /* We should have covered the parent exactly with child windows. */ |
3203 | xassert (size == last_pos - first_pos); | |
177c0ea7 | 3204 | |
7ab12479 | 3205 | /* Now delete any children that became too small. */ |
047aaeb9 | 3206 | if (nodelete_p != 1) |
233a4a2c | 3207 | for (child = *forward; !NILP (child); child = c->next) |
7ab12479 | 3208 | { |
233a4a2c | 3209 | int child_size; |
047aaeb9 | 3210 | |
233a4a2c | 3211 | c = XWINDOW (child); |
047aaeb9 MR |
3212 | child_size = WINDOW_TOTAL_SIZE (c, width_p); |
3213 | size_window (child, child_size, width_p, nodelete_p, | |
3214 | first_only, last_only); | |
7ab12479 JB |
3215 | } |
3216 | } | |
3217 | } | |
3218 | ||
233a4a2c | 3219 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
047aaeb9 MR |
3220 | WINDOW's children. NODELETE zero means windows that have become |
3221 | smaller than window-min-height in the process may be deleted. | |
3222 | NODELETE 1 means never delete windows that become too small in the | |
3223 | process. (The caller should check later and do so if appropriate.) | |
3224 | NODELETE 2 means delete only windows that have become too small to be | |
3225 | displayed correctly. */ | |
7ab12479 | 3226 | |
5e14b1fc | 3227 | void |
233a4a2c | 3228 | set_window_height (window, height, nodelete) |
7ab12479 | 3229 | Lisp_Object window; |
233a4a2c | 3230 | int height; |
7ab12479 JB |
3231 | int nodelete; |
3232 | { | |
5fe0b054 | 3233 | size_window (window, height, 0, nodelete, 0, 0); |
233a4a2c | 3234 | } |
7ab12479 | 3235 | |
233a4a2c | 3236 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
047aaeb9 MR |
3237 | WINDOW's children. NODELETE zero means windows that have become |
3238 | smaller than window-min-width in the process may be deleted. | |
3239 | NODELETE 1 means never delete windows that become too small in the | |
3240 | process. (The caller should check later and do so if appropriate.) | |
3241 | NODELETE 2 means delete only windows that have become too small to be | |
3242 | displayed correctly. */ | |
7ab12479 | 3243 | |
233a4a2c GM |
3244 | void |
3245 | set_window_width (window, width, nodelete) | |
3246 | Lisp_Object window; | |
3247 | int width; | |
3248 | int nodelete; | |
3249 | { | |
5fe0b054 | 3250 | size_window (window, width, 1, nodelete, 0, 0); |
7ab12479 | 3251 | } |
233a4a2c | 3252 | |
cdbc7fec KS |
3253 | /* Change window heights in windows rooted in WINDOW by N lines. */ |
3254 | ||
3255 | void | |
3256 | change_window_heights (window, n) | |
3257 | Lisp_Object window; | |
3258 | int n; | |
3259 | { | |
3260 | struct window *w = XWINDOW (window); | |
3261 | ||
949cf20f KS |
3262 | XSETFASTINT (w->top_line, XFASTINT (w->top_line) + n); |
3263 | XSETFASTINT (w->total_lines, XFASTINT (w->total_lines) - n); | |
cdbc7fec | 3264 | |
949cf20f KS |
3265 | if (INTEGERP (w->orig_top_line)) |
3266 | XSETFASTINT (w->orig_top_line, XFASTINT (w->orig_top_line) + n); | |
3267 | if (INTEGERP (w->orig_total_lines)) | |
3268 | XSETFASTINT (w->orig_total_lines, XFASTINT (w->orig_total_lines) - n); | |
cdbc7fec KS |
3269 | |
3270 | /* Handle just the top child in a vertical split. */ | |
3271 | if (!NILP (w->vchild)) | |
3272 | change_window_heights (w->vchild, n); | |
3273 | ||
3274 | /* Adjust all children in a horizontal split. */ | |
3275 | for (window = w->hchild; !NILP (window); window = w->next) | |
3276 | { | |
3277 | w = XWINDOW (window); | |
3278 | change_window_heights (window, n); | |
3279 | } | |
3280 | } | |
3281 | ||
7ab12479 | 3282 | \f |
1d8d96fa | 3283 | int window_select_count; |
7ab12479 | 3284 | |
5b03d3c0 RS |
3285 | Lisp_Object |
3286 | Fset_window_buffer_unwind (obuf) | |
3287 | Lisp_Object obuf; | |
3288 | { | |
3289 | Fset_buffer (obuf); | |
3290 | return Qnil; | |
3291 | } | |
3292 | ||
56613f06 SM |
3293 | EXFUN (Fset_window_fringes, 4); |
3294 | EXFUN (Fset_window_scroll_bars, 4); | |
7ab12479 | 3295 | |
6a44ffb3 SM |
3296 | static void |
3297 | run_funs (Lisp_Object funs) | |
3298 | { | |
3299 | for (; CONSP (funs); funs = XCDR (funs)) | |
3300 | if (!EQ (XCAR (funs), Qt)) | |
3301 | call0 (XCAR (funs)); | |
3302 | } | |
3303 | ||
3304 | static Lisp_Object select_window_norecord (Lisp_Object window); | |
3305 | ||
ef264c42 SM |
3306 | void |
3307 | run_window_configuration_change_hook (struct frame *f) | |
3308 | { | |
ef264c42 | 3309 | int count = SPECPDL_INDEX (); |
6a44ffb3 SM |
3310 | Lisp_Object frame, global_wcch |
3311 | = Fdefault_value (Qwindow_configuration_change_hook); | |
3312 | XSETFRAME (frame, f); | |
3313 | ||
3314 | if (NILP (Vrun_hooks)) | |
3315 | return; | |
3316 | ||
ef264c42 SM |
3317 | if (SELECTED_FRAME () != f) |
3318 | { | |
ef264c42 SM |
3319 | record_unwind_protect (Fselect_frame, Fselected_frame ()); |
3320 | Fselect_frame (frame); | |
3321 | } | |
6a44ffb3 SM |
3322 | |
3323 | /* Use the right buffer. Matters when running the local hooks. */ | |
3324 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
3325 | { | |
3326 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
3327 | Fset_buffer (Fwindow_buffer (Qnil)); | |
3328 | } | |
3329 | ||
3330 | /* Look for buffer-local values. */ | |
3331 | { | |
3332 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
3333 | for (; CONSP (windows); windows = XCDR (windows)) | |
3334 | { | |
3335 | Lisp_Object window = XCAR (windows); | |
3336 | Lisp_Object buffer = Fwindow_buffer (window); | |
3337 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
3338 | buffer))) | |
3339 | { | |
3340 | int count = SPECPDL_INDEX (); | |
3341 | record_unwind_protect (select_window_norecord, Fselected_window ()); | |
3342 | select_window_norecord (window); | |
3343 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
3344 | buffer)); | |
ef264c42 SM |
3345 | unbind_to (count, Qnil); |
3346 | } | |
6a44ffb3 SM |
3347 | } |
3348 | } | |
047aaeb9 | 3349 | |
6a44ffb3 SM |
3350 | run_funs (global_wcch); |
3351 | unbind_to (count, Qnil); | |
ef264c42 SM |
3352 | } |
3353 | ||
5500c422 GM |
3354 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3355 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3356 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3357 | margins, fringes, and scroll-bar settings of the window are not | |
3358 | reset from the buffer's local settings. */ | |
7ab12479 | 3359 | |
5500c422 | 3360 | void |
949cf20f | 3361 | set_window_buffer (window, buffer, run_hooks_p, keep_margins_p) |
5500c422 | 3362 | Lisp_Object window, buffer; |
949cf20f | 3363 | int run_hooks_p, keep_margins_p; |
5500c422 GM |
3364 | { |
3365 | struct window *w = XWINDOW (window); | |
3366 | struct buffer *b = XBUFFER (buffer); | |
aed13378 | 3367 | int count = SPECPDL_INDEX (); |
c3b232e4 | 3368 | int samebuf = EQ (buffer, w->buffer); |
7ab12479 JB |
3369 | |
3370 | w->buffer = buffer; | |
86e48436 RS |
3371 | |
3372 | if (EQ (window, selected_window)) | |
5500c422 | 3373 | b->last_selected_window = window; |
beb4e312 | 3374 | |
c49a0495 KS |
3375 | /* Let redisplay errors through. */ |
3376 | b->display_error_modiff = 0; | |
3377 | ||
beb4e312 | 3378 | /* Update time stamps of buffer display. */ |
5500c422 GM |
3379 | if (INTEGERP (b->display_count)) |
3380 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
3381 | b->display_time = Fcurrent_time (); | |
86e48436 | 3382 | |
d834a2e9 | 3383 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 GM |
3384 | XSETFASTINT (w->window_end_vpos, 0); |
3385 | bzero (&w->last_cursor, sizeof w->last_cursor); | |
5a41ab94 | 3386 | w->window_end_valid = Qnil; |
c3b232e4 SM |
3387 | if (!(keep_margins_p && samebuf)) |
3388 | { /* If we're not actually changing the buffer, Don't reset hscroll and | |
3389 | vscroll. This case happens for example when called from | |
3390 | change_frame_size_1, where we use a dummy call to | |
3391 | Fset_window_buffer on the frame's selected window (and no other) | |
3392 | just in order to run window-configuration-change-hook. | |
3393 | Resetting hscroll and vscroll here is problematic for things like | |
3394 | image-mode and doc-view-mode since it resets the image's position | |
3395 | whenever we resize the frame. */ | |
3396 | w->hscroll = w->min_hscroll = make_number (0); | |
3397 | w->vscroll = 0; | |
3398 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
3399 | set_marker_restricted (w->start, | |
3400 | make_number (b->last_window_start), | |
3401 | buffer); | |
3402 | w->start_at_line_beg = Qnil; | |
3403 | w->force_start = Qnil; | |
3404 | XSETFASTINT (w->last_modified, 0); | |
3405 | XSETFASTINT (w->last_overlay_modified, 0); | |
3406 | } | |
3407 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
3408 | I doubt it's worth the trouble. */ | |
7ab12479 | 3409 | windows_or_buffers_changed++; |
5b03d3c0 RS |
3410 | |
3411 | /* We must select BUFFER for running the window-scroll-functions. | |
3412 | If WINDOW is selected, switch permanently. | |
3413 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
3414 | if (EQ (window, selected_window)) |
3415 | Fset_buffer (buffer); | |
5b03d3c0 RS |
3416 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3417 | because that might itself be a local variable. */ | |
3418 | else if (window_initialized) | |
3419 | { | |
3420 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
3421 | Fset_buffer (buffer); | |
3422 | } | |
3423 | ||
949cf20f KS |
3424 | if (!keep_margins_p) |
3425 | { | |
3426 | /* Set left and right marginal area width etc. from buffer. */ | |
3427 | ||
79fd290e | 3428 | /* This may call adjust_window_margins three times, so |
949cf20f | 3429 | temporarily disable window margins. */ |
6b61353c KH |
3430 | Lisp_Object save_left = w->left_margin_cols; |
3431 | Lisp_Object save_right = w->right_margin_cols; | |
3432 | ||
949cf20f KS |
3433 | w->left_margin_cols = w->right_margin_cols = Qnil; |
3434 | ||
3435 | Fset_window_fringes (window, | |
3436 | b->left_fringe_width, b->right_fringe_width, | |
3437 | b->fringes_outside_margins); | |
3438 | ||
3439 | Fset_window_scroll_bars (window, | |
3440 | b->scroll_bar_width, | |
3441 | b->vertical_scroll_bar_type, Qnil); | |
3442 | ||
6b61353c KH |
3443 | w->left_margin_cols = save_left; |
3444 | w->right_margin_cols = save_right; | |
3445 | ||
949cf20f KS |
3446 | Fset_window_margins (window, |
3447 | b->left_margin_cols, b->right_margin_cols); | |
3448 | } | |
7ab12479 | 3449 | |
5500c422 GM |
3450 | if (run_hooks_p) |
3451 | { | |
3452 | if (! NILP (Vwindow_scroll_functions)) | |
3453 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
3454 | Fmarker_position (w->start)); | |
ef264c42 | 3455 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
5500c422 | 3456 | } |
543f5fb1 | 3457 | |
5b03d3c0 | 3458 | unbind_to (count, Qnil); |
5500c422 | 3459 | } |
5b03d3c0 | 3460 | |
5500c422 | 3461 | |
949cf20f | 3462 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
fdb82f93 | 3463 | doc: /* Make WINDOW display BUFFER as its contents. |
c2755926 | 3464 | BUFFER can be a buffer or the name of an existing buffer. |
ab80314b | 3465 | Optional third arg KEEP-MARGINS non-nil means that WINDOW's current |
949cf20f KS |
3466 | display margins, fringe widths, and scroll bar settings are maintained; |
3467 | the default is to reset these from BUFFER's local settings or the frame | |
6cb4a892 RS |
3468 | defaults. |
3469 | ||
3470 | This function runs the hook `window-scroll-functions'. */) | |
949cf20f | 3471 | (window, buffer, keep_margins) |
56613f06 | 3472 | register Lisp_Object window, buffer, keep_margins; |
5500c422 GM |
3473 | { |
3474 | register Lisp_Object tem; | |
3475 | register struct window *w = decode_window (window); | |
5500c422 | 3476 | |
bed0c171 | 3477 | XSETWINDOW (window, w); |
5500c422 | 3478 | buffer = Fget_buffer (buffer); |
b7826503 | 3479 | CHECK_BUFFER (buffer); |
5500c422 GM |
3480 | |
3481 | if (NILP (XBUFFER (buffer)->name)) | |
3482 | error ("Attempt to display deleted buffer"); | |
3483 | ||
3484 | tem = w->buffer; | |
3485 | if (NILP (tem)) | |
3486 | error ("Window is deleted"); | |
3487 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
3488 | is first being set up. */ | |
3489 | { | |
3490 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) | |
3491 | error ("Window is dedicated to `%s'", | |
d5db4077 | 3492 | SDATA (XBUFFER (tem)->name)); |
5500c422 GM |
3493 | |
3494 | unshow_buffer (w); | |
3495 | } | |
3496 | ||
949cf20f | 3497 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 JB |
3498 | return Qnil; |
3499 | } | |
3500 | ||
2d0834cc SM |
3501 | /* Note that selected_window can be nil |
3502 | when this is called from Fset_window_configuration. */ | |
3503 | ||
14d87dc9 | 3504 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, |
fdb82f93 | 3505 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. |
e963215c | 3506 | If WINDOW is not already selected, make WINDOW's buffer current |
c2755926 | 3507 | and make WINDOW the frame's selected window. Return WINDOW. |
14d87dc9 SM |
3508 | Optional second arg NORECORD non-nil means |
3509 | do not put this buffer at the front of the list of recently selected ones. | |
282f7831 | 3510 | |
fdb82f93 PJ |
3511 | Note that the main editor command loop |
3512 | selects the buffer of the selected window before each command. */) | |
14d87dc9 SM |
3513 | (window, norecord) |
3514 | register Lisp_Object window, norecord; | |
7ab12479 JB |
3515 | { |
3516 | register struct window *w; | |
719eaeb1 | 3517 | register struct window *ow; |
1ae1a37d | 3518 | struct frame *sf; |
7ab12479 | 3519 | |
b7826503 | 3520 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3521 | |
3522 | w = XWINDOW (window); | |
50e88778 | 3523 | w->frozen_window_start_p = 0; |
7ab12479 | 3524 | |
2a1893f4 SM |
3525 | ++window_select_count; |
3526 | XSETFASTINT (w->use_time, window_select_count); | |
7ab12479 JB |
3527 | if (EQ (window, selected_window)) |
3528 | return window; | |
3529 | ||
ca2d5566 SM |
3530 | sf = SELECTED_FRAME (); |
3531 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
3532 | { | |
3533 | XFRAME (WINDOW_FRAME (w))->selected_window = window; | |
3534 | /* Use this rather than Fhandle_switch_frame | |
3535 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
3536 | move around in the state where a minibuffer in a separate | |
3537 | frame is active. */ | |
3538 | Fselect_frame (WINDOW_FRAME (w)); | |
3539 | /* Fselect_frame called us back so we've done all the work already. */ | |
3540 | eassert (EQ (window, selected_window)); | |
3541 | return window; | |
3542 | } | |
3543 | else | |
3544 | sf->selected_window = window; | |
3545 | ||
a46c0153 RS |
3546 | /* Store the current buffer's actual point into the |
3547 | old selected window. It belongs to that window, | |
3548 | and when the window is not selected, must be in the window. */ | |
719eaeb1 GM |
3549 | if (!NILP (selected_window)) |
3550 | { | |
3551 | ow = XWINDOW (selected_window); | |
3552 | if (! NILP (ow->buffer)) | |
3553 | set_marker_both (ow->pointm, ow->buffer, | |
3554 | BUF_PT (XBUFFER (ow->buffer)), | |
3555 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
3556 | } | |
7ab12479 JB |
3557 | |
3558 | selected_window = window; | |
7ab12479 | 3559 | |
14d87dc9 | 3560 | if (NILP (norecord)) |
b7354ddf | 3561 | record_buffer (w->buffer); |
7ab12479 JB |
3562 | Fset_buffer (w->buffer); |
3563 | ||
86e48436 RS |
3564 | XBUFFER (w->buffer)->last_selected_window = window; |
3565 | ||
7ab12479 JB |
3566 | /* Go to the point recorded in the window. |
3567 | This is important when the buffer is in more | |
3568 | than one window. It also matters when | |
3569 | redisplay_window has altered point after scrolling, | |
3570 | because it makes the change only in the window. */ | |
3571 | { | |
3572 | register int new_point = marker_position (w->pointm); | |
3573 | if (new_point < BEGV) | |
3574 | SET_PT (BEGV); | |
a9c95e08 | 3575 | else if (new_point > ZV) |
7ab12479 JB |
3576 | SET_PT (ZV); |
3577 | else | |
3578 | SET_PT (new_point); | |
3579 | } | |
3580 | ||
3581 | windows_or_buffers_changed++; | |
3582 | return window; | |
3583 | } | |
14d87dc9 SM |
3584 | |
3585 | static Lisp_Object | |
3586 | select_window_norecord (window) | |
3587 | Lisp_Object window; | |
3588 | { | |
3589 | return Fselect_window (window, Qt); | |
3590 | } | |
b7354ddf | 3591 | \f |
441a127e RS |
3592 | /* Deiconify the frame containing the window WINDOW, |
3593 | unless it is the selected frame; | |
3594 | then return WINDOW. | |
3595 | ||
3596 | The reason for the exception for the selected frame | |
3597 | is that it seems better not to change the selected frames visibility | |
3598 | merely because of displaying a different buffer in it. | |
3599 | The deiconification is useful when a buffer gets shown in | |
3600 | another frame that you were not using lately. */ | |
d07f802a RS |
3601 | |
3602 | static Lisp_Object | |
3603 | display_buffer_1 (window) | |
3604 | Lisp_Object window; | |
3605 | { | |
1ae1a37d GM |
3606 | Lisp_Object frame = XWINDOW (window)->frame; |
3607 | FRAME_PTR f = XFRAME (frame); | |
177c0ea7 | 3608 | |
d07f802a | 3609 | FRAME_SAMPLE_VISIBILITY (f); |
177c0ea7 | 3610 | |
2d0834cc SM |
3611 | if (EQ (frame, selected_frame)) |
3612 | ; /* Assume the selected frame is already visible enough. */ | |
3613 | else if (minibuf_level > 0 | |
3614 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
3615 | && WINDOW_LIVE_P (minibuf_selected_window) | |
3616 | && EQ (frame, WINDOW_FRAME (XWINDOW (minibuf_selected_window)))) | |
3617 | ; /* Assume the frame from which we invoked the minibuffer is visible. */ | |
3618 | else | |
60117126 RS |
3619 | { |
3620 | if (FRAME_ICONIFIED_P (f)) | |
1ae1a37d | 3621 | Fmake_frame_visible (frame); |
37962e60 | 3622 | else if (FRAME_VISIBLE_P (f)) |
1ae1a37d | 3623 | Fraise_frame (frame); |
60117126 | 3624 | } |
177c0ea7 | 3625 | |
d07f802a RS |
3626 | return window; |
3627 | } | |
3628 | ||
4628f7a4 | 3629 | DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, |
d99b4859 | 3630 | doc: /* Returns non-nil if a buffer named BUFFER-NAME gets a special frame. |
c019856e RS |
3631 | If the value is t, `display-buffer' or `pop-to-buffer' would create a |
3632 | special frame for that buffer using the default frame parameters. | |
3633 | ||
3634 | If the value is a list, it is a list of frame parameters that would be used | |
d99b4859 RS |
3635 | to make a frame for that buffer. |
3636 | The variables `special-display-buffer-names' | |
3637 | and `special-display-regexps' control this. */) | |
fdb82f93 | 3638 | (buffer_name) |
4628f7a4 EN |
3639 | Lisp_Object buffer_name; |
3640 | { | |
3641 | Lisp_Object tem; | |
3642 | ||
b7826503 | 3643 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
3644 | |
3645 | tem = Fmember (buffer_name, Vspecial_display_buffer_names); | |
3646 | if (!NILP (tem)) | |
3647 | return Qt; | |
3648 | ||
3649 | tem = Fassoc (buffer_name, Vspecial_display_buffer_names); | |
3650 | if (!NILP (tem)) | |
3651 | return XCDR (tem); | |
3652 | ||
3653 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) | |
3654 | { | |
3655 | Lisp_Object car = XCAR (tem); | |
3656 | if (STRINGP (car) | |
3657 | && fast_string_match (car, buffer_name) >= 0) | |
3658 | return Qt; | |
3659 | else if (CONSP (car) | |
3660 | && STRINGP (XCAR (car)) | |
3661 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
0057b00a | 3662 | return XCDR (car); |
4628f7a4 EN |
3663 | } |
3664 | return Qnil; | |
177c0ea7 | 3665 | } |
4628f7a4 EN |
3666 | |
3667 | DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, | |
c019856e RS |
3668 | doc: /* Returns non-nil if a buffer named BUFFER-NAME would use the same window. |
3669 | More precisely, if `display-buffer' or `pop-to-buffer' would display | |
3670 | that buffer in the selected window rather than (as usual) in some other window. | |
fdb82f93 PJ |
3671 | See `same-window-buffer-names' and `same-window-regexps'. */) |
3672 | (buffer_name) | |
4628f7a4 EN |
3673 | Lisp_Object buffer_name; |
3674 | { | |
3675 | Lisp_Object tem; | |
3676 | ||
b7826503 | 3677 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
3678 | |
3679 | tem = Fmember (buffer_name, Vsame_window_buffer_names); | |
3680 | if (!NILP (tem)) | |
3681 | return Qt; | |
3682 | ||
3683 | tem = Fassoc (buffer_name, Vsame_window_buffer_names); | |
3684 | if (!NILP (tem)) | |
3685 | return Qt; | |
3686 | ||
3687 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) | |
3688 | { | |
3689 | Lisp_Object car = XCAR (tem); | |
3690 | if (STRINGP (car) | |
3691 | && fast_string_match (car, buffer_name) >= 0) | |
3692 | return Qt; | |
3693 | else if (CONSP (car) | |
3694 | && STRINGP (XCAR (car)) | |
3695 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
3696 | return Qt; | |
3697 | } | |
3698 | return Qnil; | |
3699 | } | |
3700 | ||
fdb82f93 | 3701 | /* Use B so the default is (other-buffer). */ |
53f76081 | 3702 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 3, |
fdb82f93 PJ |
3703 | "BDisplay buffer: \nP", |
3704 | doc: /* Make BUFFER appear in some window but don't select it. | |
473d3c06 | 3705 | BUFFER must be the name of an existing buffer, or, when called from Lisp, |
c2755926 | 3706 | a buffer. |
fdb82f93 PJ |
3707 | If BUFFER is shown already in some window, just use that one, |
3708 | unless the window is the selected window and the optional second | |
3709 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg). | |
3710 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER. | |
3711 | Returns the window displaying BUFFER. | |
079d288f | 3712 | If `display-buffer-reuse-frames' is non-nil, and another frame is currently |
fdb82f93 PJ |
3713 | displaying BUFFER, then simply raise that frame. |
3714 | ||
6b61353c KH |
3715 | The variables `special-display-buffer-names', |
3716 | `special-display-regexps', `same-window-buffer-names', and | |
3717 | `same-window-regexps' customize how certain buffer names are handled. | |
9297079e | 3718 | The latter two take effect only if NOT-THIS-WINDOW is nil. |
fdb82f93 | 3719 | |
3c9bbf9f RS |
3720 | If optional argument FRAME is `visible', check all visible frames |
3721 | for a window to use. | |
3722 | If FRAME is 0, check all visible and iconified frames. | |
3723 | If FRAME is t, check all frames. | |
3724 | If FRAME is a frame, check only that frame. | |
3725 | If FRAME is nil, check only the selected frame | |
fdb82f93 PJ |
3726 | (actually the last nonminibuffer frame), |
3727 | unless `pop-up-frames' or `display-buffer-reuse-frames' is non-nil, | |
3728 | which means search visible and iconified frames. | |
3729 | ||
876e2665 GM |
3730 | If a full-width window on a splittable frame is available to display |
3731 | the buffer, it may be split, subject to the value of the variable | |
3732 | `split-height-threshold'. | |
3733 | ||
fdb82f93 PJ |
3734 | If `even-window-heights' is non-nil, window heights will be evened out |
3735 | if displaying the buffer causes two vertically adjacent windows to be | |
3736 | displayed. */) | |
3737 | (buffer, not_this_window, frame) | |
92f94a12 | 3738 | Lisp_Object buffer, not_this_window, frame; |
7ab12479 | 3739 | { |
aee631c2 | 3740 | register Lisp_Object window, tem, swp; |
1ae1a37d | 3741 | struct frame *f; |
7ab12479 | 3742 | |
aee631c2 | 3743 | swp = Qnil; |
7ab12479 | 3744 | buffer = Fget_buffer (buffer); |
b7826503 | 3745 | CHECK_BUFFER (buffer); |
7ab12479 | 3746 | |
265a9e55 | 3747 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
3748 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
3749 | ||
265a9e55 | 3750 | if (NILP (not_this_window) |
7ab12479 | 3751 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 3752 | return display_buffer_1 (selected_window); |
7ab12479 | 3753 | |
855d8627 RS |
3754 | /* See if the user has specified this buffer should appear |
3755 | in the selected window. */ | |
3756 | if (NILP (not_this_window)) | |
3757 | { | |
aee631c2 RS |
3758 | swp = Fsame_window_p (XBUFFER (buffer)->name); |
3759 | if (!NILP (swp) && !no_switch_window (selected_window)) | |
c63dc4a2 RS |
3760 | { |
3761 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 3762 | return display_buffer_1 (selected_window); |
c63dc4a2 | 3763 | } |
855d8627 RS |
3764 | } |
3765 | ||
079d288f | 3766 | /* If the user wants pop-up-frames or display-buffer-reuse-frames, |
73dc5198 KH |
3767 | look for a window showing BUFFER on any visible or iconified frame. |
3768 | Otherwise search only the current frame. */ | |
53f76081 RS |
3769 | if (! NILP (frame)) |
3770 | tem = frame; | |
9c3da604 GM |
3771 | else if (pop_up_frames |
3772 | || display_buffer_reuse_frames | |
3773 | || last_nonminibuf_frame == 0) | |
73dc5198 KH |
3774 | XSETFASTINT (tem, 0); |
3775 | else | |
73dc5198 | 3776 | XSETFRAME (tem, last_nonminibuf_frame); |
177c0ea7 | 3777 | |
73dc5198 | 3778 | window = Fget_buffer_window (buffer, tem); |
265a9e55 JB |
3779 | if (!NILP (window) |
3780 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
9c3da604 | 3781 | return display_buffer_1 (window); |
7ab12479 | 3782 | |
a90712c2 | 3783 | /* Certain buffer names get special handling. */ |
aee631c2 | 3784 | if (!NILP (Vspecial_display_function) && NILP (swp)) |
a90712c2 | 3785 | { |
4628f7a4 EN |
3786 | tem = Fspecial_display_p (XBUFFER (buffer)->name); |
3787 | if (EQ (tem, Qt)) | |
a90712c2 | 3788 | return call1 (Vspecial_display_function, buffer); |
4628f7a4 EN |
3789 | if (CONSP (tem)) |
3790 | return call2 (Vspecial_display_function, buffer, tem); | |
a90712c2 RS |
3791 | } |
3792 | ||
44fa5b1e JB |
3793 | /* If there are no frames open that have more than a minibuffer, |
3794 | we need to create a new frame. */ | |
3795 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 3796 | { |
a90712c2 | 3797 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
949cf20f | 3798 | Fset_window_buffer (window, buffer, Qnil); |
d07f802a | 3799 | return display_buffer_1 (window); |
7ab12479 | 3800 | } |
7ab12479 | 3801 | |
1ae1a37d | 3802 | f = SELECTED_FRAME (); |
43bad991 | 3803 | if (pop_up_windows |
1ae1a37d | 3804 | || FRAME_MINIBUF_ONLY_P (f) |
cee67da9 RS |
3805 | /* If the current frame is a special display frame, |
3806 | don't try to reuse its windows. */ | |
1ae1a37d | 3807 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f))->dedicated)) |
7ab12479 | 3808 | { |
12cae7c0 | 3809 | Lisp_Object frames; |
90ab5c62 SM |
3810 | struct gcpro gcpro1; |
3811 | GCPRO1 (buffer); | |
12cae7c0 | 3812 | |
37962e60 | 3813 | frames = Qnil; |
1ae1a37d | 3814 | if (FRAME_MINIBUF_ONLY_P (f)) |
74112613 | 3815 | XSETFRAME (frames, last_nonminibuf_frame); |
7ab12479 | 3816 | |
cee67da9 RS |
3817 | /* Note that both Fget_largest_window and Fget_lru_window |
3818 | ignore minibuffers and dedicated windows. | |
3819 | This means they can return nil. */ | |
7ab12479 | 3820 | |
cee67da9 RS |
3821 | /* If the frame we would try to split cannot be split, |
3822 | try other frames. */ | |
1ae1a37d | 3823 | if (FRAME_NO_SPLIT_P (NILP (frames) ? f : last_nonminibuf_frame)) |
cee67da9 RS |
3824 | { |
3825 | /* Try visible frames first. */ | |
3cbb13c8 | 3826 | window = Fget_largest_window (Qvisible, Qt); |
cee67da9 RS |
3827 | /* If that didn't work, try iconified frames. */ |
3828 | if (NILP (window)) | |
3cbb13c8 SM |
3829 | window = Fget_largest_window (make_number (0), Qt); |
3830 | #if 0 /* Don't try windows on other displays. */ | |
cee67da9 | 3831 | if (NILP (window)) |
3cbb13c8 SM |
3832 | window = Fget_largest_window (Qt, Qt); |
3833 | #endif | |
cee67da9 RS |
3834 | } |
3835 | else | |
3cbb13c8 | 3836 | window = Fget_largest_window (frames, Qt); |
cee67da9 | 3837 | |
e99c7806 | 3838 | tem = Qnil; |
7ae6d1d1 JL |
3839 | if (!NILP (Vsplit_window_preferred_function)) |
3840 | tem = call1 (Vsplit_window_preferred_function, window); | |
3841 | ||
3842 | if (!NILP (tem)) | |
3843 | window = tem; | |
3844 | else | |
3845 | /* If the largest window is tall enough, full-width, and either eligible | |
3846 | for splitting or the only window, split it. */ | |
3847 | if (!NILP (window) | |
3848 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) | |
3849 | && WINDOW_FULL_WIDTH_P (XWINDOW (window)) | |
3850 | && (window_height (window) >= split_height_threshold | |
3851 | || (NILP (XWINDOW (window)->parent))) | |
3852 | && (window_height (window) | |
047aaeb9 | 3853 | >= (2 * window_min_size_2 (XWINDOW (window), 0, 0)))) |
7ae6d1d1 | 3854 | window = Fsplit_window (window, Qnil, Qnil); |
7ab12479 JB |
3855 | else |
3856 | { | |
7ab8da68 | 3857 | Lisp_Object upper, other; |
1942f68f | 3858 | |
3cbb13c8 | 3859 | window = Fget_lru_window (frames, Qt); |
1971a872 RF |
3860 | /* If the LRU window is tall enough, and either eligible for |
3861 | splitting and selected or the only window, split it. */ | |
cee67da9 | 3862 | if (!NILP (window) |
92cca945 | 3863 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ae6d1d1 JL |
3864 | && ((EQ (window, selected_window) |
3865 | && window_height (window) >= split_height_threshold) | |
3866 | || (NILP (XWINDOW (window)->parent))) | |
3867 | && (window_height (window) | |
047aaeb9 | 3868 | >= (2 * window_min_size_2 (XWINDOW (window), 0, 0)))) |
7ae6d1d1 | 3869 | window = Fsplit_window (window, Qnil, Qnil); |
49e99345 SM |
3870 | else |
3871 | window = Fget_lru_window (frames, Qnil); | |
cee67da9 | 3872 | /* If Fget_lru_window returned nil, try other approaches. */ |
48d9379d | 3873 | |
cee67da9 | 3874 | /* Try visible frames first. */ |
48d9379d RS |
3875 | if (NILP (window)) |
3876 | window = Fget_buffer_window (buffer, Qvisible); | |
cee67da9 | 3877 | if (NILP (window)) |
3cbb13c8 | 3878 | window = Fget_largest_window (Qvisible, Qnil); |
cee67da9 | 3879 | /* If that didn't work, try iconified frames. */ |
48d9379d RS |
3880 | if (NILP (window)) |
3881 | window = Fget_buffer_window (buffer, make_number (0)); | |
cee67da9 | 3882 | if (NILP (window)) |
3cbb13c8 SM |
3883 | window = Fget_largest_window (make_number (0), Qnil); |
3884 | ||
3885 | #if 0 /* Don't try frames on other displays. */ | |
48d9379d RS |
3886 | if (NILP (window)) |
3887 | window = Fget_buffer_window (buffer, Qt); | |
cee67da9 | 3888 | if (NILP (window)) |
3cbb13c8 SM |
3889 | window = Fget_largest_window (Qt, Qnil); |
3890 | #endif | |
cee67da9 RS |
3891 | /* As a last resort, make a new frame. */ |
3892 | if (NILP (window)) | |
3893 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
3894 | /* If window appears above or below another, |
3895 | even out their heights. */ | |
7ab8da68 | 3896 | other = upper = Qnil; |
1942f68f | 3897 | if (!NILP (XWINDOW (window)->prev)) |
7ab8da68 | 3898 | other = upper = XWINDOW (window)->prev; |
1942f68f | 3899 | if (!NILP (XWINDOW (window)->next)) |
7ab8da68 | 3900 | other = XWINDOW (window)->next, upper = window; |
1942f68f | 3901 | if (!NILP (other) |
6529ed87 | 3902 | && !NILP (Veven_window_heights) |
1942f68f | 3903 | /* Check that OTHER and WINDOW are vertically arrayed. */ |
949cf20f KS |
3904 | && !EQ (XWINDOW (other)->top_line, XWINDOW (window)->top_line) |
3905 | && (XFASTINT (XWINDOW (other)->total_lines) | |
3906 | > XFASTINT (XWINDOW (window)->total_lines))) | |
1942f68f | 3907 | { |
949cf20f KS |
3908 | int total = (XFASTINT (XWINDOW (other)->total_lines) |
3909 | + XFASTINT (XWINDOW (window)->total_lines)); | |
86c8e823 | 3910 | enlarge_window (upper, |
949cf20f | 3911 | total / 2 - XFASTINT (XWINDOW (upper)->total_lines), |
56ebfae2 | 3912 | 0); |
1942f68f | 3913 | } |
7ab12479 | 3914 | } |
90ab5c62 | 3915 | UNGCPRO; |
7ab12479 JB |
3916 | } |
3917 | else | |
3cbb13c8 | 3918 | window = Fget_lru_window (Qnil, Qnil); |
7ab12479 | 3919 | |
949cf20f | 3920 | Fset_window_buffer (window, buffer, Qnil); |
d07f802a | 3921 | return display_buffer_1 (window); |
7ab12479 JB |
3922 | } |
3923 | ||
6b61353c KH |
3924 | |
3925 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, | |
3926 | 0, 1, 0, | |
5a1048a5 | 3927 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 3928 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3929 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c KH |
3930 | displaying that buffer. */) |
3931 | (object) | |
3932 | Lisp_Object object; | |
3933 | { | |
3934 | if (NILP (object)) | |
3935 | { | |
3936 | windows_or_buffers_changed++; | |
3937 | update_mode_lines++; | |
3938 | return Qt; | |
3939 | } | |
3940 | ||
3941 | if (WINDOWP (object)) | |
3942 | { | |
3943 | struct window *w = XWINDOW (object); | |
3944 | mark_window_display_accurate (object, 0); | |
3945 | w->update_mode_line = Qt; | |
3946 | if (BUFFERP (w->buffer)) | |
3947 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
3948 | ++update_mode_lines; | |
3949 | return Qt; | |
3950 | } | |
0cc1039f | 3951 | |
6b61353c KH |
3952 | if (STRINGP (object)) |
3953 | object = Fget_buffer (object); | |
3954 | if (BUFFERP (object) && !NILP (XBUFFER (object)->name)) | |
3955 | { | |
3956 | /* Walk all windows looking for buffer, and force update | |
3957 | of each of those windows. */ | |
3958 | ||
3959 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); | |
3960 | return NILP (object) ? Qnil : Qt; | |
3961 | } | |
3962 | ||
3963 | /* If nothing suitable was found, just return. | |
3964 | We could signal an error, but this feature will typically be used | |
3965 | asynchronously in timers or process sentinels, so we don't. */ | |
3966 | return Qnil; | |
3967 | } | |
3968 | ||
3969 | ||
7ab12479 JB |
3970 | void |
3971 | temp_output_buffer_show (buf) | |
3972 | register Lisp_Object buf; | |
3973 | { | |
3974 | register struct buffer *old = current_buffer; | |
3975 | register Lisp_Object window; | |
3976 | register struct window *w; | |
3977 | ||
bccd3dd1 RS |
3978 | XBUFFER (buf)->directory = current_buffer->directory; |
3979 | ||
7ab12479 | 3980 | Fset_buffer (buf); |
c6367666 | 3981 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3982 | BEGV = BEG; |
3983 | ZV = Z; | |
3984 | SET_PT (BEG); | |
06be4f85 | 3985 | #if 0 /* rms: there should be no reason for this. */ |
b1599b4c | 3986 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
06be4f85 | 3987 | #endif |
7ab12479 JB |
3988 | set_buffer_internal (old); |
3989 | ||
e67a1dea | 3990 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3991 | call1 (Vtemp_buffer_show_function, buf); |
3992 | else | |
3993 | { | |
53f76081 | 3994 | window = Fdisplay_buffer (buf, Qnil, Qnil); |
7ab12479 | 3995 | |
1ae1a37d | 3996 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3997 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3998 | Vminibuf_scroll_window = window; |
3999 | w = XWINDOW (window); | |
d834a2e9 | 4000 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 4001 | XSETFASTINT (w->min_hscroll, 0); |
2d0834cc SM |
4002 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
4003 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 4004 | |
beb4e312 | 4005 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 4006 | and its buffer current. */ |
2d0834cc SM |
4007 | |
4008 | if (!NILP (Vrun_hooks) | |
4009 | && !NILP (Fboundp (Qtemp_buffer_show_hook)) | |
4010 | && !NILP (Fsymbol_value (Qtemp_buffer_show_hook))) | |
2cccc823 | 4011 | { |
2d0834cc SM |
4012 | int count = SPECPDL_INDEX (); |
4013 | Lisp_Object prev_window, prev_buffer; | |
4014 | prev_window = selected_window; | |
4015 | XSETBUFFER (prev_buffer, old); | |
0cc1039f | 4016 | |
2d0834cc SM |
4017 | /* Select the window that was chosen, for running the hook. |
4018 | Note: Both Fselect_window and select_window_norecord may | |
4019 | set-buffer to the buffer displayed in the window, | |
4020 | so we need to save the current buffer. --stef */ | |
4021 | record_unwind_protect (Fset_buffer, prev_buffer); | |
4022 | record_unwind_protect (select_window_norecord, prev_window); | |
4023 | Fselect_window (window, Qt); | |
4024 | Fset_buffer (w->buffer); | |
4025 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); | |
4026 | unbind_to (count, Qnil); | |
2cccc823 RS |
4027 | } |
4028 | } | |
7ab12479 JB |
4029 | } |
4030 | \f | |
dfcf069d | 4031 | static void |
7ab12479 JB |
4032 | make_dummy_parent (window) |
4033 | Lisp_Object window; | |
4034 | { | |
cffec418 | 4035 | Lisp_Object new; |
7ab12479 | 4036 | register struct window *o, *p; |
cffec418 | 4037 | int i; |
7ab12479 | 4038 | |
cffec418 | 4039 | o = XWINDOW (window); |
26605be9 | 4040 | p = allocate_window (); |
cffec418 | 4041 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
4042 | ((struct Lisp_Vector *) p)->contents[i] |
4043 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 4044 | XSETWINDOW (new, p); |
7ab12479 | 4045 | |
2a1893f4 SM |
4046 | ++sequence_number; |
4047 | XSETFASTINT (p->sequence_number, sequence_number); | |
7ab12479 JB |
4048 | |
4049 | /* Put new into window structure in place of window */ | |
4050 | replace_window (window, new); | |
4051 | ||
4052 | o->next = Qnil; | |
4053 | o->prev = Qnil; | |
4054 | o->vchild = Qnil; | |
4055 | o->hchild = Qnil; | |
4056 | o->parent = new; | |
4057 | ||
4058 | p->start = Qnil; | |
4059 | p->pointm = Qnil; | |
4060 | p->buffer = Qnil; | |
4061 | } | |
4062 | ||
4063 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
fdb82f93 PJ |
4064 | doc: /* Split WINDOW, putting SIZE lines in the first of the pair. |
4065 | WINDOW defaults to selected one and SIZE to half its size. | |
4066 | If optional third arg HORFLAG is non-nil, split side by side | |
4067 | and put SIZE columns in the first of the pair. In that case, | |
876e2665 | 4068 | SIZE includes that window's scroll bar, or the divider column to its right. |
c2755926 LT |
4069 | Interactively, all arguments are nil. |
4070 | ||
4071 | Returns the newly created window (which is the lower or rightmost one). | |
19ca94ce RS |
4072 | The upper or leftmost window is the original one, and remains selected |
4073 | if it was selected before. | |
4074 | ||
c2755926 | 4075 | See Info node `(elisp)Splitting Windows' for more details and examples.*/) |
fdb82f93 | 4076 | (window, size, horflag) |
77ae0fe3 | 4077 | Lisp_Object window, size, horflag; |
7ab12479 JB |
4078 | { |
4079 | register Lisp_Object new; | |
4080 | register struct window *o, *p; | |
c0807608 | 4081 | FRAME_PTR fo; |
77ae0fe3 | 4082 | register int size_int; |
7ab12479 | 4083 | |
265a9e55 | 4084 | if (NILP (window)) |
7ab12479 JB |
4085 | window = selected_window; |
4086 | else | |
b7826503 | 4087 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
4088 | |
4089 | o = XWINDOW (window); | |
c0807608 | 4090 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 4091 | |
77ae0fe3 | 4092 | if (NILP (size)) |
7ab12479 | 4093 | { |
265a9e55 | 4094 | if (!NILP (horflag)) |
c0807608 | 4095 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
4096 | the usable space in columns by two. |
4097 | We round up, since the left-hand window may include | |
4098 | a dividing line, while the right-hand may not. */ | |
949cf20f | 4099 | size_int = (XFASTINT (o->total_cols) + 1) >> 1; |
7ab12479 | 4100 | else |
949cf20f | 4101 | size_int = XFASTINT (o->total_lines) >> 1; |
7ab12479 JB |
4102 | } |
4103 | else | |
4104 | { | |
b7826503 | 4105 | CHECK_NUMBER (size); |
77ae0fe3 | 4106 | size_int = XINT (size); |
7ab12479 JB |
4107 | } |
4108 | ||
4109 | if (MINI_WINDOW_P (o)) | |
4110 | error ("Attempt to split minibuffer window"); | |
233a4a2c GM |
4111 | else if (window_fixed_size_p (o, !NILP (horflag), 0)) |
4112 | error ("Attempt to split fixed-size window"); | |
7ab12479 | 4113 | |
265a9e55 | 4114 | if (NILP (horflag)) |
7ab12479 | 4115 | { |
047aaeb9 MR |
4116 | int window_safe_height = window_min_size_2 (o, 0, 0); |
4117 | ||
f1de8c77 | 4118 | if (size_int < window_safe_height) |
77ae0fe3 | 4119 | error ("Window height %d too small (after splitting)", size_int); |
f1de8c77 | 4120 | if (size_int + window_safe_height > XFASTINT (o->total_lines)) |
37962e60 | 4121 | error ("Window height %d too small (after splitting)", |
949cf20f | 4122 | XFASTINT (o->total_lines) - size_int); |
265a9e55 JB |
4123 | if (NILP (o->parent) |
4124 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
4125 | { |
4126 | make_dummy_parent (window); | |
4127 | new = o->parent; | |
4128 | XWINDOW (new)->vchild = window; | |
4129 | } | |
4130 | } | |
4131 | else | |
4132 | { | |
047aaeb9 MR |
4133 | int window_safe_width = window_min_size_2 (o, 1, 0); |
4134 | ||
f1de8c77 | 4135 | if (size_int < window_safe_width) |
77ae0fe3 | 4136 | error ("Window width %d too small (after splitting)", size_int); |
f1de8c77 | 4137 | if (size_int + window_safe_width > XFASTINT (o->total_cols)) |
37962e60 | 4138 | error ("Window width %d too small (after splitting)", |
949cf20f | 4139 | XFASTINT (o->total_cols) - size_int); |
265a9e55 JB |
4140 | if (NILP (o->parent) |
4141 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
4142 | { |
4143 | make_dummy_parent (window); | |
4144 | new = o->parent; | |
4145 | XWINDOW (new)->hchild = window; | |
4146 | } | |
4147 | } | |
4148 | ||
4149 | /* Now we know that window's parent is a vertical combination | |
4150 | if we are dividing vertically, or a horizontal combination | |
4151 | if we are making side-by-side windows */ | |
4152 | ||
4153 | windows_or_buffers_changed++; | |
c0807608 | 4154 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
4155 | new = make_window (); |
4156 | p = XWINDOW (new); | |
4157 | ||
44fa5b1e | 4158 | p->frame = o->frame; |
7ab12479 | 4159 | p->next = o->next; |
265a9e55 | 4160 | if (!NILP (p->next)) |
7ab12479 JB |
4161 | XWINDOW (p->next)->prev = new; |
4162 | p->prev = window; | |
4163 | o->next = new; | |
4164 | p->parent = o->parent; | |
4165 | p->buffer = Qt; | |
5500c422 GM |
4166 | p->window_end_valid = Qnil; |
4167 | bzero (&p->last_cursor, sizeof p->last_cursor); | |
7ab12479 | 4168 | |
949cf20f KS |
4169 | /* Duplicate special geometry settings. */ |
4170 | ||
4171 | p->left_margin_cols = o->left_margin_cols; | |
4172 | p->right_margin_cols = o->right_margin_cols; | |
4173 | p->left_fringe_width = o->left_fringe_width; | |
4174 | p->right_fringe_width = o->right_fringe_width; | |
4175 | p->fringes_outside_margins = o->fringes_outside_margins; | |
4176 | p->scroll_bar_width = o->scroll_bar_width; | |
4177 | p->vertical_scroll_bar_type = o->vertical_scroll_bar_type; | |
4178 | ||
44fa5b1e | 4179 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 4180 | |
265a9e55 | 4181 | if (!NILP (horflag)) |
7ab12479 | 4182 | { |
949cf20f KS |
4183 | p->total_lines = o->total_lines; |
4184 | p->top_line = o->top_line; | |
4185 | XSETFASTINT (p->total_cols, XFASTINT (o->total_cols) - size_int); | |
4186 | XSETFASTINT (o->total_cols, size_int); | |
4187 | XSETFASTINT (p->left_col, XFASTINT (o->left_col) + size_int); | |
4188 | adjust_window_margins (p); | |
4189 | adjust_window_margins (o); | |
7ab12479 JB |
4190 | } |
4191 | else | |
4192 | { | |
949cf20f KS |
4193 | p->left_col = o->left_col; |
4194 | p->total_cols = o->total_cols; | |
4195 | XSETFASTINT (p->total_lines, XFASTINT (o->total_lines) - size_int); | |
4196 | XSETFASTINT (o->total_lines, size_int); | |
4197 | XSETFASTINT (p->top_line, XFASTINT (o->top_line) + size_int); | |
7ab12479 JB |
4198 | } |
4199 | ||
5500c422 GM |
4200 | /* Adjust glyph matrices. */ |
4201 | adjust_glyphs (fo); | |
949cf20f KS |
4202 | |
4203 | Fset_window_buffer (new, o->buffer, Qt); | |
7ab12479 JB |
4204 | return new; |
4205 | } | |
4206 | \f | |
56ebfae2 | 4207 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", |
fdb82f93 PJ |
4208 | doc: /* Make current window ARG lines bigger. |
4209 | From program, optional second arg non-nil means grow sideways ARG columns. | |
f95284d2 | 4210 | Interactively, if an argument is not given, make the window one line bigger. |
5afc696a | 4211 | If HORIZONTAL is non-nil, enlarge horizontally instead of vertically. |
56ebfae2 RS |
4212 | This function can delete windows, even the second window, if they get |
4213 | too small. */) | |
4214 | (arg, horizontal) | |
4215 | Lisp_Object arg, horizontal; | |
7ab12479 | 4216 | { |
b7826503 | 4217 | CHECK_NUMBER (arg); |
56ebfae2 | 4218 | enlarge_window (selected_window, XINT (arg), !NILP (horizontal)); |
543f5fb1 | 4219 | |
eeca6f6f | 4220 | run_window_configuration_change_hook (SELECTED_FRAME ()); |
543f5fb1 | 4221 | |
7ab12479 JB |
4222 | return Qnil; |
4223 | } | |
4224 | ||
56ebfae2 | 4225 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", |
fdb82f93 PJ |
4226 | doc: /* Make current window ARG lines smaller. |
4227 | From program, optional second arg non-nil means shrink sideways arg columns. | |
4797b6d9 JB |
4228 | Interactively, if an argument is not given, make the window one line smaller. |
4229 | Only siblings to the right or below are changed. */) | |
56ebfae2 RS |
4230 | (arg, side) |
4231 | Lisp_Object arg, side; | |
7ab12479 | 4232 | { |
b7826503 | 4233 | CHECK_NUMBER (arg); |
56ebfae2 | 4234 | enlarge_window (selected_window, -XINT (arg), !NILP (side)); |
543f5fb1 | 4235 | |
eeca6f6f | 4236 | run_window_configuration_change_hook (SELECTED_FRAME ()); |
543f5fb1 | 4237 | |
7ab12479 JB |
4238 | return Qnil; |
4239 | } | |
4240 | ||
4241 | int | |
4242 | window_height (window) | |
4243 | Lisp_Object window; | |
4244 | { | |
4245 | register struct window *p = XWINDOW (window); | |
949cf20f | 4246 | return WINDOW_TOTAL_LINES (p); |
7ab12479 JB |
4247 | } |
4248 | ||
4249 | int | |
4250 | window_width (window) | |
4251 | Lisp_Object window; | |
4252 | { | |
4253 | register struct window *p = XWINDOW (window); | |
949cf20f | 4254 | return WINDOW_TOTAL_COLS (p); |
7ab12479 JB |
4255 | } |
4256 | ||
177c0ea7 | 4257 | |
7ab12479 | 4258 | #define CURBEG(w) \ |
5afc696a | 4259 | *(horiz_flag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line)) |
7ab12479 JB |
4260 | |
4261 | #define CURSIZE(w) \ | |
5afc696a | 4262 | *(horiz_flag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines)) |
7ab12479 | 4263 | |
233a4a2c | 4264 | |
047aaeb9 MR |
4265 | /* Enlarge WINDOW by DELTA. HORIZ_FLAG nonzero means enlarge it |
4266 | horizontally; zero means do it vertically. | |
f95284d2 | 4267 | |
5afc696a | 4268 | Siblings of the selected window are resized to fulfill the size |
047aaeb9 | 4269 | request. If they become too small in the process, they may be |
56ebfae2 | 4270 | deleted. */ |
7ab12479 | 4271 | |
f984d4fc | 4272 | static void |
56ebfae2 | 4273 | enlarge_window (window, delta, horiz_flag) |
86c8e823 | 4274 | Lisp_Object window; |
56ebfae2 | 4275 | int delta, horiz_flag; |
7ab12479 | 4276 | { |
86c8e823 | 4277 | Lisp_Object parent, next, prev; |
233a4a2c | 4278 | struct window *p; |
3578db3c KR |
4279 | Lisp_Object *sizep; |
4280 | int maximum; | |
5e14b1fc | 4281 | int (*sizefun) P_ ((Lisp_Object)) |
5afc696a | 4282 | = horiz_flag ? window_width : window_height; |
233a4a2c | 4283 | void (*setsizefun) P_ ((Lisp_Object, int, int)) |
5afc696a | 4284 | = (horiz_flag ? set_window_width : set_window_height); |
7ab12479 | 4285 | |
233a4a2c | 4286 | /* Give up if this window cannot be resized. */ |
5afc696a | 4287 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) |
233a4a2c GM |
4288 | error ("Window is not resizable"); |
4289 | ||
4290 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
4291 | while (1) |
4292 | { | |
4293 | p = XWINDOW (window); | |
4294 | parent = p->parent; | |
177c0ea7 | 4295 | |
265a9e55 | 4296 | if (NILP (parent)) |
7ab12479 | 4297 | { |
5afc696a | 4298 | if (horiz_flag) |
7ab12479 JB |
4299 | error ("No other window to side of this one"); |
4300 | break; | |
4301 | } | |
177c0ea7 | 4302 | |
5afc696a | 4303 | if (horiz_flag |
233a4a2c | 4304 | ? !NILP (XWINDOW (parent)->hchild) |
265a9e55 | 4305 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 4306 | break; |
177c0ea7 | 4307 | |
7ab12479 JB |
4308 | window = parent; |
4309 | } | |
4310 | ||
05c2896a | 4311 | sizep = &CURSIZE (window); |
7ab12479 | 4312 | |
7ab12479 JB |
4313 | { |
4314 | register int maxdelta; | |
7ab12479 | 4315 | |
f95284d2 RS |
4316 | /* Compute the maximum size increment this window can have. */ |
4317 | ||
56ebfae2 RS |
4318 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) |
4319 | /* This is a main window followed by a minibuffer. */ | |
4320 | : !NILP (p->next) ? ((*sizefun) (p->next) | |
4321 | - window_min_size (XWINDOW (p->next), | |
047aaeb9 | 4322 | horiz_flag, 0, 0, 0)) |
56ebfae2 RS |
4323 | /* This is a minibuffer following a main window. */ |
4324 | : !NILP (p->prev) ? ((*sizefun) (p->prev) | |
4325 | - window_min_size (XWINDOW (p->prev), | |
047aaeb9 | 4326 | horiz_flag, 0, 0, 0)) |
56ebfae2 RS |
4327 | /* This is a frame with only one window, a minibuffer-only |
4328 | or a minibufferless frame. */ | |
4329 | : (delta = 0)); | |
7ab12479 JB |
4330 | |
4331 | if (delta > maxdelta) | |
4332 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
4333 | the full frame, or make the only window aside from the |
4334 | minibuffer the full frame. */ | |
7ab12479 | 4335 | delta = maxdelta; |
6b54027b | 4336 | } |
d5783c40 | 4337 | |
047aaeb9 MR |
4338 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), |
4339 | horiz_flag, 0, 0, 0)) | |
6b54027b | 4340 | { |
543f5fb1 | 4341 | delete_window (window); |
d5783c40 | 4342 | return; |
6b54027b RS |
4343 | } |
4344 | ||
4345 | if (delta == 0) | |
4346 | return; | |
7ab12479 | 4347 | |
f95284d2 | 4348 | /* Find the total we can get from other siblings without deleting them. */ |
db98a733 | 4349 | maximum = 0; |
9beb8baa | 4350 | for (next = p->next; WINDOWP (next); next = XWINDOW (next)->next) |
c1636aa6 | 4351 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
047aaeb9 | 4352 | horiz_flag, 0, 0, 0); |
9beb8baa | 4353 | for (prev = p->prev; WINDOWP (prev); prev = XWINDOW (prev)->prev) |
56ebfae2 | 4354 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), |
047aaeb9 | 4355 | horiz_flag, 0, 0, 0); |
db98a733 | 4356 | |
f95284d2 | 4357 | /* If we can get it all from them without deleting them, do so. */ |
c6b530ed | 4358 | if (delta <= maximum) |
7ab12479 | 4359 | { |
db98a733 RS |
4360 | Lisp_Object first_unaffected; |
4361 | Lisp_Object first_affected; | |
233a4a2c | 4362 | int fixed_p; |
db98a733 RS |
4363 | |
4364 | next = p->next; | |
4365 | prev = p->prev; | |
4366 | first_affected = window; | |
4367 | /* Look at one sibling at a time, | |
4368 | moving away from this window in both directions alternately, | |
4369 | and take as much as we can get without deleting that sibling. */ | |
f95284d2 | 4370 | while (delta != 0 |
56ebfae2 | 4371 | && (!NILP (next) || !NILP (prev))) |
db98a733 | 4372 | { |
db98a733 RS |
4373 | if (! NILP (next)) |
4374 | { | |
c1636aa6 | 4375 | int this_one = ((*sizefun) (next) |
047aaeb9 MR |
4376 | - window_min_size (XWINDOW (next), horiz_flag, |
4377 | 0, 0, &fixed_p)); | |
233a4a2c GM |
4378 | if (!fixed_p) |
4379 | { | |
4380 | if (this_one > delta) | |
4381 | this_one = delta; | |
177c0ea7 | 4382 | |
233a4a2c | 4383 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); |
3578db3c | 4384 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 4385 | |
233a4a2c GM |
4386 | delta -= this_one; |
4387 | } | |
177c0ea7 | 4388 | |
db98a733 RS |
4389 | next = XWINDOW (next)->next; |
4390 | } | |
177c0ea7 | 4391 | |
db98a733 RS |
4392 | if (delta == 0) |
4393 | break; | |
177c0ea7 | 4394 | |
56ebfae2 | 4395 | if (! NILP (prev)) |
db98a733 | 4396 | { |
c1636aa6 | 4397 | int this_one = ((*sizefun) (prev) |
047aaeb9 MR |
4398 | - window_min_size (XWINDOW (prev), horiz_flag, |
4399 | 0, 0, &fixed_p)); | |
233a4a2c GM |
4400 | if (!fixed_p) |
4401 | { | |
4402 | if (this_one > delta) | |
4403 | this_one = delta; | |
177c0ea7 | 4404 | |
233a4a2c | 4405 | first_affected = prev; |
177c0ea7 | 4406 | |
233a4a2c | 4407 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); |
3578db3c | 4408 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
4409 | |
4410 | delta -= this_one; | |
4411 | } | |
177c0ea7 | 4412 | |
db98a733 RS |
4413 | prev = XWINDOW (prev)->prev; |
4414 | } | |
4415 | } | |
4416 | ||
233a4a2c GM |
4417 | xassert (delta == 0); |
4418 | ||
db98a733 RS |
4419 | /* Now recalculate the edge positions of all the windows affected, |
4420 | based on the new sizes. */ | |
4421 | first_unaffected = next; | |
4422 | prev = first_affected; | |
4423 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
4424 | prev = next, next = XWINDOW (next)->next) | |
4425 | { | |
3578db3c | 4426 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
4427 | /* This does not change size of NEXT, |
4428 | but it propagates the new top edge to its children */ | |
4429 | (*setsizefun) (next, (*sizefun) (next), 0); | |
4430 | } | |
7ab12479 JB |
4431 | } |
4432 | else | |
4433 | { | |
4434 | register int delta1; | |
4435 | register int opht = (*sizefun) (parent); | |
4436 | ||
3578db3c | 4437 | if (opht <= XINT (*sizep) + delta) |
daf516d3 RS |
4438 | { |
4439 | /* If trying to grow this window to or beyond size of the parent, | |
4440 | just delete all the sibling windows. */ | |
dc1ab1ee | 4441 | Lisp_Object start, tem, next; |
daf516d3 | 4442 | |
dc1ab1ee RS |
4443 | start = XWINDOW (parent)->vchild; |
4444 | if (NILP (start)) | |
4445 | start = XWINDOW (parent)->hchild; | |
daf516d3 | 4446 | |
dc1ab1ee RS |
4447 | /* Delete any siblings that come after WINDOW. */ |
4448 | tem = XWINDOW (window)->next; | |
daf516d3 RS |
4449 | while (! NILP (tem)) |
4450 | { | |
4451 | next = XWINDOW (tem)->next; | |
dc1ab1ee RS |
4452 | delete_window (tem); |
4453 | tem = next; | |
4454 | } | |
4455 | ||
4456 | /* Delete any siblings that come after WINDOW. | |
4457 | Note that if START is not WINDOW, then WINDOW still | |
047aaeb9 | 4458 | has siblings, so WINDOW has not yet replaced its parent. */ |
dc1ab1ee RS |
4459 | tem = start; |
4460 | while (! EQ (tem, window)) | |
4461 | { | |
4462 | next = XWINDOW (tem)->next; | |
4463 | delete_window (tem); | |
daf516d3 RS |
4464 | tem = next; |
4465 | } | |
4466 | } | |
7ab12479 | 4467 | else |
233a4a2c GM |
4468 | { |
4469 | /* Otherwise, make delta1 just right so that if we add | |
4470 | delta1 lines to this window and to the parent, and then | |
4471 | shrink the parent back to its original size, the new | |
4472 | proportional size of this window will increase by delta. | |
4473 | ||
4474 | The function size_window will compute the new height h' | |
4475 | of the window from delta1 as: | |
177c0ea7 | 4476 | |
233a4a2c GM |
4477 | e = delta1/n |
4478 | x = delta1 - delta1/n * n for the 1st resizable child | |
4479 | h' = h + e + x | |
4480 | ||
4481 | where n is the number of children that can be resized. | |
4482 | We can ignore x by choosing a delta1 that is a multiple of | |
4483 | n. We want the height of this window to come out as | |
177c0ea7 | 4484 | |
233a4a2c GM |
4485 | h' = h + delta |
4486 | ||
4487 | So, delta1 must be | |
177c0ea7 | 4488 | |
233a4a2c GM |
4489 | h + e = h + delta |
4490 | delta1/n = delta | |
4491 | delta1 = n * delta. | |
4492 | ||
a5731348 | 4493 | The number of children n equals the number of resizable |
233a4a2c | 4494 | children of this window + 1 because we know window itself |
047aaeb9 MR |
4495 | is resizable (otherwise we would have signalled an error). |
4496 | ||
4497 | This reasoning is not correct when other windows become too | |
4498 | small and shrink_windows refuses to delete them. Below we | |
4499 | use resize_proportionally to work around this problem. */ | |
233a4a2c GM |
4500 | |
4501 | struct window *w = XWINDOW (window); | |
4502 | Lisp_Object s; | |
4503 | int n = 1; | |
4504 | ||
9beb8baa | 4505 | for (s = w->next; WINDOWP (s); s = XWINDOW (s)->next) |
5afc696a | 4506 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c | 4507 | ++n; |
9beb8baa | 4508 | for (s = w->prev; WINDOWP (s); s = XWINDOW (s)->prev) |
5afc696a | 4509 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c GM |
4510 | ++n; |
4511 | ||
4512 | delta1 = n * delta; | |
7ab12479 | 4513 | |
daf516d3 RS |
4514 | /* Add delta1 lines or columns to this window, and to the parent, |
4515 | keeping things consistent while not affecting siblings. */ | |
4516 | XSETINT (CURSIZE (parent), opht + delta1); | |
4517 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
4518 | ||
4519 | /* Squeeze out delta1 lines or columns from our parent, | |
047aaeb9 MR |
4520 | shrinking this window and siblings proportionately. This |
4521 | brings parent back to correct size. Delta1 was calculated | |
4522 | so this makes this window the desired size, taking it all | |
4523 | out of the siblings. | |
4524 | ||
4525 | Temporarily set resize_proportionally to Qt to assure that, | |
4526 | if necessary, shrink_windows deletes smaller windows rather | |
4527 | than shrink this window. */ | |
4528 | w->resize_proportionally = Qt; | |
daf516d3 | 4529 | (*setsizefun) (parent, opht, 0); |
047aaeb9 | 4530 | w->resize_proportionally = Qnil; |
daf516d3 | 4531 | } |
7ab12479 JB |
4532 | } |
4533 | ||
d834a2e9 | 4534 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 4535 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
4536 | |
4537 | /* Adjust glyph matrices. */ | |
4538 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 4539 | } |
c1636aa6 | 4540 | |
0d384044 RS |
4541 | |
4542 | /* Adjust the size of WINDOW by DELTA, moving only its trailing edge. | |
4543 | HORIZ_FLAG nonzero means adjust the width, moving the right edge. | |
4544 | zero means adjust the height, moving the bottom edge. | |
4545 | ||
4546 | Following siblings of the selected window are resized to fulfill | |
4547 | the size request. If they become too small in the process, they | |
4548 | are not deleted; instead, we signal an error. */ | |
4549 | ||
4550 | static void | |
4551 | adjust_window_trailing_edge (window, delta, horiz_flag) | |
4552 | Lisp_Object window; | |
4553 | int delta, horiz_flag; | |
4554 | { | |
4555 | Lisp_Object parent, child; | |
4556 | struct window *p; | |
4557 | Lisp_Object old_config = Fcurrent_window_configuration (Qnil); | |
4558 | int delcount = window_deletion_count; | |
4559 | ||
0d384044 RS |
4560 | CHECK_WINDOW (window); |
4561 | ||
4562 | /* Give up if this window cannot be resized. */ | |
4563 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) | |
4564 | error ("Window is not resizable"); | |
4565 | ||
4566 | while (1) | |
4567 | { | |
bd99e242 RS |
4568 | Lisp_Object first_parallel = Qnil; |
4569 | ||
c32de52a | 4570 | if (NILP (window)) |
0d384044 | 4571 | { |
5fe0b054 RS |
4572 | /* This happens if WINDOW on the previous iteration was |
4573 | at top level of the window tree. */ | |
0d384044 | 4574 | Fset_window_configuration (old_config); |
c32de52a | 4575 | error ("Specified window edge is fixed"); |
0d384044 RS |
4576 | } |
4577 | ||
c32de52a RS |
4578 | p = XWINDOW (window); |
4579 | parent = p->parent; | |
4580 | ||
bd99e242 RS |
4581 | /* See if this level has windows in parallel in the specified |
4582 | direction. If so, set FIRST_PARALLEL to the first one. */ | |
4583 | if (horiz_flag) | |
4584 | { | |
4585 | if (! NILP (parent) && !NILP (XWINDOW (parent)->vchild)) | |
4586 | first_parallel = XWINDOW (parent)->vchild; | |
5fe0b054 RS |
4587 | else if (NILP (parent) && !NILP (p->next)) |
4588 | { | |
4589 | /* Handle the vertical chain of main window and minibuffer | |
4590 | which has no parent. */ | |
4591 | first_parallel = window; | |
4592 | while (! NILP (XWINDOW (first_parallel)->prev)) | |
4593 | first_parallel = XWINDOW (first_parallel)->prev; | |
4594 | } | |
bd99e242 RS |
4595 | } |
4596 | else | |
4597 | { | |
4598 | if (! NILP (parent) && !NILP (XWINDOW (parent)->hchild)) | |
4599 | first_parallel = XWINDOW (parent)->hchild; | |
4600 | } | |
4601 | ||
c32de52a | 4602 | /* If this level's succession is in the desired dimension, |
5fe0b054 RS |
4603 | and this window is the last one, and there is no higher level, |
4604 | its trailing edge is fixed. */ | |
4605 | if (NILP (XWINDOW (window)->next) && NILP (first_parallel) | |
4606 | && NILP (parent)) | |
c32de52a RS |
4607 | { |
4608 | Fset_window_configuration (old_config); | |
4609 | error ("Specified window edge is fixed"); | |
4610 | } | |
4611 | ||
0d384044 RS |
4612 | /* Don't make this window too small. */ |
4613 | if (XINT (CURSIZE (window)) + delta | |
047aaeb9 | 4614 | < window_min_size_2 (XWINDOW (window), horiz_flag, 0)) |
0d384044 RS |
4615 | { |
4616 | Fset_window_configuration (old_config); | |
4617 | error ("Cannot adjust window size as specified"); | |
4618 | } | |
4619 | ||
4620 | /* Clear out some redisplay caches. */ | |
4621 | XSETFASTINT (p->last_modified, 0); | |
4622 | XSETFASTINT (p->last_overlay_modified, 0); | |
4623 | ||
4624 | /* Adjust this window's edge. */ | |
4625 | XSETINT (CURSIZE (window), | |
4626 | XINT (CURSIZE (window)) + delta); | |
4627 | ||
4628 | /* If this window has following siblings in the desired dimension, | |
bd99e242 RS |
4629 | make them smaller, and exit the loop. |
4630 | ||
0d384044 RS |
4631 | (If we reach the top of the tree and can never do this, |
4632 | we will fail and report an error, above.) */ | |
bd99e242 | 4633 | if (NILP (first_parallel)) |
0d384044 | 4634 | { |
c32de52a | 4635 | if (!NILP (p->next)) |
0d384044 | 4636 | { |
e99c7521 JD |
4637 | /* This may happen for the minibuffer. In that case |
4638 | the window_deletion_count check below does not work. */ | |
a53d44a8 | 4639 | if (XINT (CURSIZE (p->next)) - delta <= 0) |
e99c7521 JD |
4640 | { |
4641 | Fset_window_configuration (old_config); | |
4642 | error ("Cannot adjust window size as specified"); | |
4643 | } | |
4644 | ||
0d384044 RS |
4645 | XSETINT (CURBEG (p->next), |
4646 | XINT (CURBEG (p->next)) + delta); | |
4647 | size_window (p->next, XINT (CURSIZE (p->next)) - delta, | |
5fe0b054 | 4648 | horiz_flag, 0, 1, 0); |
0d384044 RS |
4649 | break; |
4650 | } | |
4651 | } | |
4652 | else | |
4653 | /* Here we have a chain of parallel siblings, in the other dimension. | |
4654 | Change the size of the other siblings. */ | |
bd99e242 | 4655 | for (child = first_parallel; |
0d384044 RS |
4656 | ! NILP (child); |
4657 | child = XWINDOW (child)->next) | |
4658 | if (! EQ (child, window)) | |
4659 | size_window (child, XINT (CURSIZE (child)) + delta, | |
5fe0b054 | 4660 | horiz_flag, 0, 0, 1); |
0d384044 RS |
4661 | |
4662 | window = parent; | |
4663 | } | |
4664 | ||
4665 | /* If we made a window so small it got deleted, | |
4666 | we failed. Report failure. */ | |
4667 | if (delcount != window_deletion_count) | |
4668 | { | |
4669 | Fset_window_configuration (old_config); | |
4670 | error ("Cannot adjust window size as specified"); | |
4671 | } | |
4672 | ||
4673 | /* Adjust glyph matrices. */ | |
4674 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
4675 | } | |
4676 | ||
7ab12479 JB |
4677 | #undef CURBEG |
4678 | #undef CURSIZE | |
4679 | ||
0d384044 RS |
4680 | DEFUN ("adjust-window-trailing-edge", Fadjust_window_trailing_edge, |
4681 | Sadjust_window_trailing_edge, 3, 3, 0, | |
4682 | doc: /* Adjust the bottom or right edge of WINDOW by DELTA. | |
56ebfae2 | 4683 | If HORIZONTAL is non-nil, that means adjust the width, moving the right edge. |
0d384044 RS |
4684 | Otherwise, adjust the height, moving the bottom edge. |
4685 | ||
4686 | Following siblings of the selected window are resized to fulfill | |
4687 | the size request. If they become too small in the process, they | |
4688 | are not deleted; instead, we signal an error. */) | |
4689 | (window, delta, horizontal) | |
4690 | Lisp_Object window, delta, horizontal; | |
4691 | { | |
4692 | CHECK_NUMBER (delta); | |
eeca6f6f SM |
4693 | if (NILP (window)) |
4694 | window = selected_window; | |
0d384044 RS |
4695 | adjust_window_trailing_edge (window, XINT (delta), !NILP (horizontal)); |
4696 | ||
eeca6f6f SM |
4697 | run_window_configuration_change_hook |
4698 | (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
0d384044 RS |
4699 | |
4700 | return Qnil; | |
4701 | } | |
4702 | ||
5500c422 | 4703 | |
f984d4fc GM |
4704 | \f |
4705 | /*********************************************************************** | |
4706 | Resizing Mini-Windows | |
4707 | ***********************************************************************/ | |
4708 | ||
4709 | static void shrink_window_lowest_first P_ ((struct window *, int)); | |
f984d4fc | 4710 | |
43b4a21f GM |
4711 | enum save_restore_action |
4712 | { | |
4713 | CHECK_ORIG_SIZES, | |
4714 | SAVE_ORIG_SIZES, | |
4715 | RESTORE_ORIG_SIZES | |
4716 | }; | |
4717 | ||
177c0ea7 | 4718 | static int save_restore_orig_size P_ ((struct window *, |
43b4a21f | 4719 | enum save_restore_action)); |
f984d4fc GM |
4720 | |
4721 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
4722 | from lowest windows first. */ | |
4723 | ||
4724 | static void | |
4725 | shrink_window_lowest_first (w, height) | |
4726 | struct window *w; | |
4727 | int height; | |
4728 | { | |
4729 | struct window *c; | |
4730 | Lisp_Object child; | |
4731 | int old_height; | |
4732 | ||
4733 | xassert (!MINI_WINDOW_P (w)); | |
4734 | ||
4735 | /* Set redisplay hints. */ | |
4736 | XSETFASTINT (w->last_modified, 0); | |
4737 | XSETFASTINT (w->last_overlay_modified, 0); | |
4738 | windows_or_buffers_changed++; | |
4739 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
4740 | ||
949cf20f KS |
4741 | old_height = XFASTINT (w->total_lines); |
4742 | XSETFASTINT (w->total_lines, height); | |
f984d4fc GM |
4743 | |
4744 | if (!NILP (w->hchild)) | |
4745 | { | |
4746 | for (child = w->hchild; !NILP (child); child = c->next) | |
4747 | { | |
4748 | c = XWINDOW (child); | |
949cf20f | 4749 | c->top_line = w->top_line; |
f984d4fc GM |
4750 | shrink_window_lowest_first (c, height); |
4751 | } | |
4752 | } | |
4753 | else if (!NILP (w->vchild)) | |
4754 | { | |
4755 | Lisp_Object last_child; | |
4756 | int delta = old_height - height; | |
4757 | int last_top; | |
6bbd7a29 GM |
4758 | |
4759 | last_child = Qnil; | |
177c0ea7 | 4760 | |
f984d4fc GM |
4761 | /* Find the last child. We are taking space from lowest windows |
4762 | first, so we iterate over children from the last child | |
4763 | backwards. */ | |
9beb8baa | 4764 | for (child = w->vchild; WINDOWP (child); child = XWINDOW (child)->next) |
f984d4fc GM |
4765 | last_child = child; |
4766 | ||
047aaeb9 | 4767 | /* Size children down to their safe heights. */ |
f984d4fc GM |
4768 | for (child = last_child; delta && !NILP (child); child = c->prev) |
4769 | { | |
4770 | int this_one; | |
177c0ea7 | 4771 | |
f984d4fc | 4772 | c = XWINDOW (child); |
047aaeb9 | 4773 | this_one = XFASTINT (c->total_lines) - window_min_size_1 (c, 0, 1); |
f984d4fc GM |
4774 | |
4775 | if (this_one > delta) | |
4776 | this_one = delta; | |
4777 | ||
949cf20f | 4778 | shrink_window_lowest_first (c, XFASTINT (c->total_lines) - this_one); |
f984d4fc GM |
4779 | delta -= this_one; |
4780 | } | |
4781 | ||
4782 | /* Compute new positions. */ | |
949cf20f | 4783 | last_top = XINT (w->top_line); |
f984d4fc GM |
4784 | for (child = w->vchild; !NILP (child); child = c->next) |
4785 | { | |
4786 | c = XWINDOW (child); | |
949cf20f KS |
4787 | c->top_line = make_number (last_top); |
4788 | shrink_window_lowest_first (c, XFASTINT (c->total_lines)); | |
4789 | last_top += XFASTINT (c->total_lines); | |
f984d4fc GM |
4790 | } |
4791 | } | |
4792 | } | |
4793 | ||
4794 | ||
43b4a21f GM |
4795 | /* Save, restore, or check positions and sizes in the window tree |
4796 | rooted at W. ACTION says what to do. | |
f984d4fc | 4797 | |
949cf20f KS |
4798 | If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and |
4799 | orig_total_lines members are valid for all windows in the window | |
4800 | tree. Value is non-zero if they are valid. | |
177c0ea7 | 4801 | |
43b4a21f | 4802 | If ACTION is SAVE_ORIG_SIZES, save members top and height in |
949cf20f | 4803 | orig_top_line and orig_total_lines for all windows in the tree. |
43b4a21f | 4804 | |
949cf20f KS |
4805 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from values |
4806 | stored in orig_top_line and orig_total_lines for all windows. */ | |
43b4a21f GM |
4807 | |
4808 | static int | |
4809 | save_restore_orig_size (w, action) | |
f984d4fc | 4810 | struct window *w; |
43b4a21f | 4811 | enum save_restore_action action; |
f984d4fc | 4812 | { |
43b4a21f GM |
4813 | int success_p = 1; |
4814 | ||
f984d4fc GM |
4815 | while (w) |
4816 | { | |
4817 | if (!NILP (w->hchild)) | |
43b4a21f GM |
4818 | { |
4819 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
4820 | success_p = 0; | |
4821 | } | |
f984d4fc | 4822 | else if (!NILP (w->vchild)) |
43b4a21f GM |
4823 | { |
4824 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
4825 | success_p = 0; | |
4826 | } | |
177c0ea7 | 4827 | |
43b4a21f | 4828 | switch (action) |
f984d4fc | 4829 | { |
43b4a21f | 4830 | case CHECK_ORIG_SIZES: |
949cf20f | 4831 | if (!INTEGERP (w->orig_top_line) || !INTEGERP (w->orig_total_lines)) |
43b4a21f GM |
4832 | return 0; |
4833 | break; | |
4834 | ||
4835 | case SAVE_ORIG_SIZES: | |
949cf20f KS |
4836 | w->orig_top_line = w->top_line; |
4837 | w->orig_total_lines = w->total_lines; | |
43b4a21f GM |
4838 | XSETFASTINT (w->last_modified, 0); |
4839 | XSETFASTINT (w->last_overlay_modified, 0); | |
4840 | break; | |
4841 | ||
4842 | case RESTORE_ORIG_SIZES: | |
949cf20f KS |
4843 | xassert (INTEGERP (w->orig_top_line) && INTEGERP (w->orig_total_lines)); |
4844 | w->top_line = w->orig_top_line; | |
4845 | w->total_lines = w->orig_total_lines; | |
4846 | w->orig_total_lines = w->orig_top_line = Qnil; | |
43b4a21f GM |
4847 | XSETFASTINT (w->last_modified, 0); |
4848 | XSETFASTINT (w->last_overlay_modified, 0); | |
4849 | break; | |
4850 | ||
4851 | default: | |
4852 | abort (); | |
f984d4fc | 4853 | } |
43b4a21f | 4854 | |
f984d4fc GM |
4855 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
4856 | } | |
43b4a21f GM |
4857 | |
4858 | return success_p; | |
f984d4fc GM |
4859 | } |
4860 | ||
4861 | ||
4862 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
4863 | without deleting other windows. */ | |
4864 | ||
4865 | void | |
4866 | grow_mini_window (w, delta) | |
4867 | struct window *w; | |
4868 | int delta; | |
4869 | { | |
4870 | struct frame *f = XFRAME (w->frame); | |
4871 | struct window *root; | |
177c0ea7 | 4872 | |
f984d4fc GM |
4873 | xassert (MINI_WINDOW_P (w)); |
4874 | xassert (delta >= 0); | |
177c0ea7 | 4875 | |
f984d4fc GM |
4876 | /* Compute how much we can enlarge the mini-window without deleting |
4877 | other windows. */ | |
4878 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4879 | if (delta) | |
4880 | { | |
047aaeb9 | 4881 | int min_height = window_min_size (root, 0, 0, 0, 0); |
949cf20f | 4882 | if (XFASTINT (root->total_lines) - delta < min_height) |
8b8bd9c6 | 4883 | /* Note that the root window may already be smaller than |
eafa3196 | 4884 | min_height. */ |
949cf20f | 4885 | delta = max (0, XFASTINT (root->total_lines) - min_height); |
f984d4fc | 4886 | } |
177c0ea7 | 4887 | |
f984d4fc GM |
4888 | if (delta) |
4889 | { | |
4890 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
4891 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
4892 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
4893 | |
4894 | /* Shrink other windows. */ | |
949cf20f | 4895 | shrink_window_lowest_first (root, XFASTINT (root->total_lines) - delta); |
f984d4fc GM |
4896 | |
4897 | /* Grow the mini-window. */ | |
949cf20f KS |
4898 | w->top_line = make_number (XFASTINT (root->top_line) + XFASTINT (root->total_lines)); |
4899 | w->total_lines = make_number (XFASTINT (w->total_lines) + delta); | |
f984d4fc GM |
4900 | XSETFASTINT (w->last_modified, 0); |
4901 | XSETFASTINT (w->last_overlay_modified, 0); | |
177c0ea7 | 4902 | |
f984d4fc GM |
4903 | adjust_glyphs (f); |
4904 | } | |
4905 | } | |
4906 | ||
4907 | ||
86c8e823 GM |
4908 | /* Shrink mini-window W. If there is recorded info about window sizes |
4909 | before a call to grow_mini_window, restore recorded window sizes. | |
4910 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
4911 | line. */ | |
f984d4fc GM |
4912 | |
4913 | void | |
4914 | shrink_mini_window (w) | |
4915 | struct window *w; | |
4916 | { | |
4917 | struct frame *f = XFRAME (w->frame); | |
4918 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4919 | ||
43b4a21f | 4920 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 4921 | { |
43b4a21f | 4922 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
4923 | adjust_glyphs (f); |
4924 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
4925 | windows_or_buffers_changed = 1; | |
4926 | } | |
949cf20f | 4927 | else if (XFASTINT (w->total_lines) > 1) |
86c8e823 | 4928 | { |
0130fe1a GM |
4929 | /* Distribute the additional lines of the mini-window |
4930 | among the other windows. */ | |
86c8e823 GM |
4931 | Lisp_Object window; |
4932 | XSETWINDOW (window, w); | |
56ebfae2 | 4933 | enlarge_window (window, 1 - XFASTINT (w->total_lines), 0); |
86c8e823 | 4934 | } |
f984d4fc GM |
4935 | } |
4936 | ||
4937 | ||
4938 | \f | |
5500c422 GM |
4939 | /* Mark window cursors off for all windows in the window tree rooted |
4940 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4941 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4942 | the frame are cleared. */ | |
4943 | ||
4944 | void | |
4945 | mark_window_cursors_off (w) | |
4946 | struct window *w; | |
4947 | { | |
4948 | while (w) | |
4949 | { | |
4950 | if (!NILP (w->hchild)) | |
4951 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4952 | else if (!NILP (w->vchild)) | |
4953 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
4954 | else | |
4955 | w->phys_cursor_on_p = 0; | |
4956 | ||
4957 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4958 | } | |
4959 | } | |
4960 | ||
4961 | ||
e9c195b1 | 4962 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4963 | |
4964 | int | |
4965 | window_internal_height (w) | |
4966 | struct window *w; | |
4967 | { | |
949cf20f | 4968 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4969 | |
e9c195b1 GM |
4970 | if (!MINI_WINDOW_P (w)) |
4971 | { | |
4972 | if (!NILP (w->parent) | |
4973 | || !NILP (w->vchild) | |
4974 | || !NILP (w->hchild) | |
4975 | || !NILP (w->next) | |
4976 | || !NILP (w->prev) | |
4977 | || WINDOW_WANTS_MODELINE_P (w)) | |
4978 | --ht; | |
7ab12479 | 4979 | |
e9c195b1 GM |
4980 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4981 | --ht; | |
4982 | } | |
7ab12479 JB |
4983 | |
4984 | return ht; | |
4985 | } | |
4986 | ||
535e0b8e JB |
4987 | |
4988 | /* Return the number of columns in W. | |
a3c87d4e | 4989 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 4990 | separating W from the sibling to its right. */ |
5500c422 | 4991 | |
535e0b8e | 4992 | int |
949cf20f | 4993 | window_box_text_cols (w) |
535e0b8e JB |
4994 | struct window *w; |
4995 | { | |
5500c422 | 4996 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
949cf20f | 4997 | int width = XINT (w->total_cols); |
535e0b8e | 4998 | |
949cf20f | 4999 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) |
5500c422 | 5000 | /* Scroll bars occupy a few columns. */ |
949cf20f KS |
5001 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); |
5002 | else if (!FRAME_WINDOW_P (f) | |
5003 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
5500c422 GM |
5004 | /* The column of `|' characters separating side-by-side windows |
5005 | occupies one column only. */ | |
5006 | width -= 1; | |
5007 | ||
5500c422 | 5008 | if (FRAME_WINDOW_P (f)) |
949cf20f KS |
5009 | /* On window-systems, fringes and display margins cannot be |
5010 | used for normal text. */ | |
5011 | width -= (WINDOW_FRINGE_COLS (w) | |
5012 | + WINDOW_LEFT_MARGIN_COLS (w) | |
5013 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
111e5992 RS |
5014 | |
5015 | return width; | |
535e0b8e JB |
5016 | } |
5017 | ||
5500c422 GM |
5018 | \f |
5019 | /************************************************************************ | |
5020 | Window Scrolling | |
5021 | ***********************************************************************/ | |
535e0b8e | 5022 | |
5500c422 | 5023 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 5024 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
5025 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
5026 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
5027 | means don't signal an error if we try to move over BEGV or ZV, | |
5028 | respectively. */ | |
7ab12479 | 5029 | |
101d1605 RS |
5030 | static void |
5031 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
5032 | Lisp_Object window; |
5033 | int n; | |
101d1605 | 5034 | int whole; |
f8026fd8 | 5035 | int noerror; |
5500c422 | 5036 | { |
cba59f77 RS |
5037 | immediate_quit = 1; |
5038 | ||
5500c422 GM |
5039 | /* If we must, use the pixel-based version which is much slower than |
5040 | the line-based one but can handle varying line heights. */ | |
5041 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
5042 | window_scroll_pixel_based (window, n, whole, noerror); | |
5043 | else | |
5044 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
5045 | |
5046 | immediate_quit = 0; | |
5500c422 GM |
5047 | } |
5048 | ||
5049 | ||
5050 | /* Implementation of window_scroll that works based on pixel line | |
5051 | heights. See the comment of window_scroll for parameter | |
5052 | descriptions. */ | |
5053 | ||
5054 | static void | |
5055 | window_scroll_pixel_based (window, n, whole, noerror) | |
5056 | Lisp_Object window; | |
5057 | int n; | |
5058 | int whole; | |
5059 | int noerror; | |
5060 | { | |
5061 | struct it it; | |
5062 | struct window *w = XWINDOW (window); | |
5063 | struct text_pos start; | |
5500c422 | 5064 | int this_scroll_margin; |
5cdb3cf3 MB |
5065 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5066 | int vscrolled = 0; | |
5a857365 | 5067 | int x, y, rtop, rbot, rowh, vpos; |
5500c422 GM |
5068 | |
5069 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
177c0ea7 | 5070 | |
5500c422 | 5071 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
5072 | the screen. Allow PT to be partially visible, otherwise |
5073 | something like (scroll-down 1) with PT in the line before | |
5074 | the partially visible one would recenter. */ | |
5a857365 KS |
5075 | |
5076 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 GM |
5077 | { |
5078 | /* Move backward half the height of the window. Performance note: | |
5079 | vmotion used here is about 10% faster, but would give wrong | |
5080 | results for variable height lines. */ | |
5081 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
5082 | it.current_y = it.last_visible_y; | |
f204989e | 5083 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 5084 | |
5500c422 GM |
5085 | /* The function move_iterator_vertically may move over more than |
5086 | the specified y-distance. If it->w is small, e.g. a | |
5087 | mini-buffer window, we may end up in front of the window's | |
5088 | display area. This is the case when Start displaying at the | |
5089 | start of the line containing PT in this case. */ | |
5090 | if (it.current_y <= 0) | |
5091 | { | |
5092 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 5093 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
5094 | it.current_y = 0; |
5095 | } | |
5096 | ||
5097 | start = it.current.pos; | |
5098 | } | |
e56263e5 KS |
5099 | else if (auto_window_vscroll_p) |
5100 | { | |
5a857365 | 5101 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
5102 | { |
5103 | int px; | |
5104 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
5105 | if (whole) | |
e856c216 KS |
5106 | dy = max ((window_box_height (w) |
5107 | - next_screen_context_lines * dy), | |
5108 | dy); | |
e56263e5 KS |
5109 | dy *= n; |
5110 | ||
5a857365 | 5111 | if (n < 0) |
e56263e5 | 5112 | { |
5a857365 KS |
5113 | /* Only vscroll backwards if already vscrolled forwards. */ |
5114 | if (w->vscroll < 0 && rtop > 0) | |
5115 | { | |
5116 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
5117 | Fset_window_vscroll (window, make_number (px), Qt); | |
5118 | return; | |
5119 | } | |
e56263e5 | 5120 | } |
5a857365 | 5121 | if (n > 0) |
e56263e5 | 5122 | { |
5a857365 KS |
5123 | /* Do vscroll if already vscrolled or only display line. */ |
5124 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
5125 | { | |
5126 | px = max (0, -w->vscroll + min (rbot, dy)); | |
5127 | Fset_window_vscroll (window, make_number (px), Qt); | |
5128 | return; | |
5129 | } | |
5130 | ||
5131 | /* Maybe modify window start instead of scrolling. */ | |
5132 | if (rbot > 0 || w->vscroll < 0) | |
5133 | { | |
5134 | int spos; | |
5135 | ||
5136 | Fset_window_vscroll (window, make_number (0), Qt); | |
5137 | /* If there are other text lines above the current row, | |
5138 | move window start to current row. Else to next row. */ | |
5139 | if (rbot > 0) | |
5140 | spos = XINT (Fline_beginning_position (Qnil)); | |
5141 | else | |
5142 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
5143 | set_marker_restricted (w->start, make_number (spos), | |
5144 | w->buffer); | |
5145 | w->start_at_line_beg = Qt; | |
5146 | w->update_mode_line = Qt; | |
5147 | XSETFASTINT (w->last_modified, 0); | |
5148 | XSETFASTINT (w->last_overlay_modified, 0); | |
5149 | /* Set force_start so that redisplay_window will run the | |
5150 | window-scroll-functions. */ | |
5151 | w->force_start = Qt; | |
5152 | return; | |
5153 | } | |
e56263e5 KS |
5154 | } |
5155 | } | |
5a857365 | 5156 | /* Cancel previous vscroll. */ |
e56263e5 KS |
5157 | Fset_window_vscroll (window, make_number (0), Qt); |
5158 | } | |
5500c422 | 5159 | |
d0c38d63 | 5160 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
5161 | point in the same window line as it is now, so get that line. */ |
5162 | if (!NILP (Vscroll_preserve_screen_position)) | |
5163 | { | |
c525d842 CY |
5164 | /* We preserve the goal pixel coordinate across consecutive |
5165 | calls to scroll-up or scroll-down. This avoids the | |
5166 | possibility of point becoming "stuck" on a tall line when | |
5167 | scrolling by one line. */ | |
66fe93d1 | 5168 | if (window_scroll_pixel_based_preserve_y < 0 |
7d619454 SM |
5169 | || (!EQ (current_kboard->Vlast_command, Qscroll_up) |
5170 | && !EQ (current_kboard->Vlast_command, Qscroll_down))) | |
c525d842 CY |
5171 | { |
5172 | start_display (&it, w, start); | |
5173 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 5174 | window_scroll_pixel_based_preserve_y = it.current_y; |
c525d842 | 5175 | } |
5500c422 GM |
5176 | } |
5177 | else | |
66fe93d1 | 5178 | window_scroll_pixel_based_preserve_y = -1; |
5500c422 GM |
5179 | |
5180 | /* Move iterator it from start the specified distance forward or | |
5181 | backward. The result is the new window start. */ | |
5182 | start_display (&it, w, start); | |
5183 | if (whole) | |
5184 | { | |
e856c216 KS |
5185 | int start_pos = IT_CHARPOS (it); |
5186 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
5187 | dy = max ((window_box_height (w) | |
5188 | - next_screen_context_lines * dy), | |
5189 | dy) * n; | |
d72340d4 GM |
5190 | |
5191 | /* Note that move_it_vertically always moves the iterator to the | |
5192 | start of a line. So, if the last line doesn't have a newline, | |
5193 | we would end up at the start of the line ending at ZV. */ | |
5194 | if (dy <= 0) | |
e856c216 KS |
5195 | { |
5196 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 5197 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
5198 | looking at an image that is taller that the window height. */ |
5199 | while (start_pos == IT_CHARPOS (it) | |
5200 | && start_pos > BEGV) | |
5201 | move_it_by_lines (&it, -1, 1); | |
5202 | } | |
d72340d4 | 5203 | else if (dy > 0) |
bed83ee4 | 5204 | { |
bed83ee4 KS |
5205 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
5206 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 5207 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
5208 | looking at an image that is taller that the window height. */ |
5209 | while (start_pos == IT_CHARPOS (it) | |
5210 | && start_pos < ZV) | |
5211 | move_it_by_lines (&it, 1, 1); | |
5212 | } | |
5500c422 GM |
5213 | } |
5214 | else | |
5215 | move_it_by_lines (&it, n, 1); | |
5216 | ||
96ae58c8 RS |
5217 | /* We failed if we find ZV is already on the screen (scrolling up, |
5218 | means there's nothing past the end), or if we can't start any | |
5219 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 5220 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 5221 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 5222 | { |
5cdb3cf3 MB |
5223 | if (IT_CHARPOS (it) == ZV) |
5224 | { | |
07ce8b53 RS |
5225 | if (it.current_y < it.last_visible_y |
5226 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 5227 | > it.last_visible_y)) |
a74eca50 GM |
5228 | { |
5229 | /* The last line was only partially visible, make it fully | |
5230 | visible. */ | |
5231 | w->vscroll = (it.last_visible_y | |
5232 | - it.current_y + it.max_ascent + it.max_descent); | |
5233 | adjust_glyphs (it.f); | |
5234 | } | |
5cdb3cf3 MB |
5235 | else if (noerror) |
5236 | return; | |
cf402f3f | 5237 | else if (n < 0) /* could happen with empty buffers */ |
ba96a5cf | 5238 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 | 5239 | else |
ba96a5cf | 5240 | xsignal0 (Qend_of_buffer); |
5cdb3cf3 | 5241 | } |
5500c422 | 5242 | else |
5cdb3cf3 MB |
5243 | { |
5244 | if (w->vscroll != 0) | |
5245 | /* The first line was only partially visible, make it fully | |
5246 | visible. */ | |
5247 | w->vscroll = 0; | |
5248 | else if (noerror) | |
5249 | return; | |
5250 | else | |
ba96a5cf | 5251 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 MB |
5252 | } |
5253 | ||
5254 | /* If control gets here, then we vscrolled. */ | |
5255 | ||
5256 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
5257 | ||
5258 | /* Don't try to change the window start below. */ | |
5259 | vscrolled = 1; | |
5500c422 GM |
5260 | } |
5261 | ||
5cdb3cf3 MB |
5262 | if (! vscrolled) |
5263 | { | |
dad67609 RS |
5264 | int pos = IT_CHARPOS (it); |
5265 | int bytepos; | |
e68def1e AS |
5266 | |
5267 | /* If in the middle of a multi-glyph character move forward to | |
5268 | the next character. */ | |
5269 | if (in_display_vector_p (&it)) | |
5270 | { | |
5271 | ++pos; | |
5272 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
5273 | } | |
5274 | ||
5cdb3cf3 | 5275 | /* Set the window start, and set up the window for redisplay. */ |
dad67609 | 5276 | set_marker_restricted (w->start, make_number (pos), |
5cdb3cf3 | 5277 | w->buffer); |
dad67609 RS |
5278 | bytepos = XMARKER (w->start)->bytepos; |
5279 | w->start_at_line_beg = ((pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n') | |
5280 | ? Qt : Qnil); | |
5cdb3cf3 MB |
5281 | w->update_mode_line = Qt; |
5282 | XSETFASTINT (w->last_modified, 0); | |
5283 | XSETFASTINT (w->last_overlay_modified, 0); | |
5284 | /* Set force_start so that redisplay_window will run the | |
5285 | window-scroll-functions. */ | |
5286 | w->force_start = Qt; | |
5287 | } | |
177c0ea7 | 5288 | |
dc297565 RS |
5289 | /* The rest of this function uses current_y in a nonstandard way, |
5290 | not including the height of the header line if any. */ | |
5500c422 | 5291 | it.current_y = it.vpos = 0; |
177c0ea7 | 5292 | |
940f53e5 RS |
5293 | /* Move PT out of scroll margins. |
5294 | This code wants current_y to be zero at the window start position | |
5295 | even if there is a header line. */ | |
5296 | this_scroll_margin = max (0, scroll_margin); | |
5297 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); | |
5298 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); | |
5299 | ||
5300 | if (n > 0) | |
5500c422 | 5301 | { |
940f53e5 RS |
5302 | /* We moved the window start towards ZV, so PT may be now |
5303 | in the scroll margin at the top. */ | |
5304 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
5305 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
5306 | && (NILP (Vscroll_preserve_screen_position) | |
5307 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5308 | /* We found PT at a legitimate height. Leave it alone. */ |
5309 | ; | |
66fe93d1 | 5310 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 5311 | { |
fa3c3426 RS |
5312 | /* If we have a header line, take account of it. |
5313 | This is necessary because we set it.current_y to 0, above. */ | |
c525d842 | 5314 | move_it_to (&it, -1, -1, |
66fe93d1 LT |
5315 | window_scroll_pixel_based_preserve_y |
5316 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c525d842 | 5317 | -1, MOVE_TO_Y); |
940f53e5 RS |
5318 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5319 | } | |
5320 | else | |
5500c422 | 5321 | { |
5500c422 | 5322 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
5323 | { |
5324 | int prev = it.current_y; | |
5325 | move_it_by_lines (&it, 1, 1); | |
5326 | if (prev == it.current_y) | |
5327 | break; | |
5328 | } | |
5500c422 GM |
5329 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5330 | } | |
940f53e5 RS |
5331 | } |
5332 | else if (n < 0) | |
5333 | { | |
5334 | int charpos, bytepos; | |
aed328bf | 5335 | int partial_p; |
940f53e5 | 5336 | |
66fe93d1 LT |
5337 | /* Save our position, for the |
5338 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
5339 | charpos = IT_CHARPOS (it); |
5340 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 5341 | |
940f53e5 RS |
5342 | /* We moved the window start towards BEGV, so PT may be now |
5343 | in the scroll margin at the bottom. */ | |
5344 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
5345 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
5346 | - this_scroll_margin - 1), | |
5347 | -1, | |
940f53e5 RS |
5348 | MOVE_TO_POS | MOVE_TO_Y); |
5349 | ||
aed328bf KS |
5350 | /* Save our position, in case it's correct. */ |
5351 | charpos = IT_CHARPOS (it); | |
5352 | bytepos = IT_BYTEPOS (it); | |
5353 | ||
5354 | /* See if point is on a partially visible line at the end. */ | |
5355 | if (it.what == IT_EOB) | |
5356 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
5357 | else | |
5358 | { | |
5359 | move_it_by_lines (&it, 1, 1); | |
5360 | partial_p = it.current_y > it.last_visible_y; | |
5361 | } | |
5362 | ||
bdf4ec93 RS |
5363 | if (charpos == PT && !partial_p |
5364 | && (NILP (Vscroll_preserve_screen_position) | |
5365 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5366 | /* We found PT before we found the display margin, so PT is ok. */ |
5367 | ; | |
66fe93d1 | 5368 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 RS |
5369 | { |
5370 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5371 | start_display (&it, w, start); | |
c525d842 CY |
5372 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
5373 | here because we called start_display again and did not | |
5374 | alter it.current_y this time. */ | |
66fe93d1 LT |
5375 | move_it_to (&it, -1, -1, window_scroll_pixel_based_preserve_y, -1, |
5376 | MOVE_TO_Y); | |
940f53e5 RS |
5377 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5378 | } | |
5379 | else | |
5380 | { | |
aed328bf | 5381 | if (partial_p) |
5cdb3cf3 MB |
5382 | /* The last line was only partially visible, so back up two |
5383 | lines to make sure we're on a fully visible line. */ | |
5384 | { | |
5385 | move_it_by_lines (&it, -2, 0); | |
5386 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
5387 | } | |
5388 | else | |
5389 | /* No, the position we saved is OK, so use it. */ | |
5390 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
5391 | } |
5392 | } | |
5393 | } | |
5394 | ||
5395 | ||
5396 | /* Implementation of window_scroll that works based on screen lines. | |
5397 | See the comment of window_scroll for parameter descriptions. */ | |
5398 | ||
5399 | static void | |
5400 | window_scroll_line_based (window, n, whole, noerror) | |
5401 | Lisp_Object window; | |
5402 | int n; | |
5403 | int whole; | |
5404 | int noerror; | |
7ab12479 JB |
5405 | { |
5406 | register struct window *w = XWINDOW (window); | |
5500c422 | 5407 | register int opoint = PT, opoint_byte = PT_BYTE; |
b73ea88e | 5408 | register int pos, pos_byte; |
7ab12479 JB |
5409 | register int ht = window_internal_height (w); |
5410 | register Lisp_Object tem; | |
5411 | int lose; | |
5500c422 | 5412 | Lisp_Object bolp; |
345d45b2 | 5413 | int startpos; |
101d1605 RS |
5414 | struct position posit; |
5415 | int original_vpos; | |
5416 | ||
d4e7cf01 GM |
5417 | /* If scrolling screen-fulls, compute the number of lines to |
5418 | scroll from the window's height. */ | |
5419 | if (whole) | |
5420 | n *= max (1, ht - next_screen_context_lines); | |
5421 | ||
101d1605 RS |
5422 | startpos = marker_position (w->start); |
5423 | ||
5424 | posit = *compute_motion (startpos, 0, 0, 0, | |
5425 | PT, ht, 0, | |
ec2b66c4 | 5426 | -1, XINT (w->hscroll), |
101d1605 RS |
5427 | 0, w); |
5428 | original_vpos = posit.vpos; | |
0a1f771a | 5429 | |
d834a2e9 | 5430 | XSETFASTINT (tem, PT); |
6ffdb539 | 5431 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 5432 | |
265a9e55 | 5433 | if (NILP (tem)) |
7ab12479 | 5434 | { |
cd2be1dd | 5435 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 5436 | startpos = PT; |
7ab12479 JB |
5437 | } |
5438 | ||
345d45b2 | 5439 | SET_PT (startpos); |
5ce7b543 | 5440 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 5441 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 5442 | pos = PT; |
b73ea88e | 5443 | pos_byte = PT_BYTE; |
7ab12479 | 5444 | bolp = Fbolp (); |
b73ea88e | 5445 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
5446 | |
5447 | if (lose) | |
f8026fd8 JB |
5448 | { |
5449 | if (noerror) | |
5450 | return; | |
5451 | else | |
ba96a5cf | 5452 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 5453 | } |
7ab12479 JB |
5454 | |
5455 | if (pos < ZV) | |
7ab12479 | 5456 | { |
0c7da84e RS |
5457 | int this_scroll_margin = scroll_margin; |
5458 | ||
5459 | /* Don't use a scroll margin that is negative or too large. */ | |
5460 | if (this_scroll_margin < 0) | |
5461 | this_scroll_margin = 0; | |
5462 | ||
949cf20f KS |
5463 | if (XINT (w->total_lines) < 4 * scroll_margin) |
5464 | this_scroll_margin = XINT (w->total_lines) / 4; | |
0c7da84e | 5465 | |
b73ea88e | 5466 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
5467 | w->start_at_line_beg = bolp; |
5468 | w->update_mode_line = Qt; | |
d834a2e9 | 5469 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 5470 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
5471 | /* Set force_start so that redisplay_window will run |
5472 | the window-scroll-functions. */ | |
5473 | w->force_start = Qt; | |
0c7da84e | 5474 | |
bdf4ec93 RS |
5475 | if (!NILP (Vscroll_preserve_screen_position) |
5476 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 5477 | { |
b73ea88e | 5478 | SET_PT_BOTH (pos, pos_byte); |
101d1605 | 5479 | Fvertical_motion (make_number (original_vpos), window); |
0c7da84e | 5480 | } |
101d1605 RS |
5481 | /* If we scrolled forward, put point enough lines down |
5482 | that it is outside the scroll margin. */ | |
5483 | else if (n > 0) | |
0c7da84e | 5484 | { |
101d1605 RS |
5485 | int top_margin; |
5486 | ||
5487 | if (this_scroll_margin > 0) | |
5488 | { | |
b73ea88e | 5489 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
5490 | Fvertical_motion (make_number (this_scroll_margin), window); |
5491 | top_margin = PT; | |
5492 | } | |
5493 | else | |
5494 | top_margin = pos; | |
5495 | ||
5496 | if (top_margin <= opoint) | |
b73ea88e | 5497 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 5498 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 5499 | { |
b73ea88e | 5500 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
5501 | Fvertical_motion (make_number (original_vpos), window); |
5502 | } | |
9317a85d | 5503 | else |
335406fc | 5504 | SET_PT (top_margin); |
0c7da84e | 5505 | } |
101d1605 | 5506 | else if (n < 0) |
7ab12479 | 5507 | { |
101d1605 RS |
5508 | int bottom_margin; |
5509 | ||
0c7da84e RS |
5510 | /* If we scrolled backward, put point near the end of the window |
5511 | but not within the scroll margin. */ | |
b73ea88e | 5512 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 5513 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
5514 | if (XFASTINT (tem) == ht - this_scroll_margin) |
5515 | bottom_margin = PT; | |
5516 | else | |
5517 | bottom_margin = PT + 1; | |
5518 | ||
5519 | if (bottom_margin > opoint) | |
b73ea88e | 5520 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 5521 | else |
101d1605 | 5522 | { |
5500c422 | 5523 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 5524 | { |
b73ea88e | 5525 | SET_PT_BOTH (pos, pos_byte); |
9317a85d RS |
5526 | Fvertical_motion (make_number (original_vpos), window); |
5527 | } | |
5528 | else | |
5529 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 5530 | } |
7ab12479 JB |
5531 | } |
5532 | } | |
5533 | else | |
f8026fd8 JB |
5534 | { |
5535 | if (noerror) | |
5536 | return; | |
5537 | else | |
ba96a5cf | 5538 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 5539 | } |
7ab12479 | 5540 | } |
5500c422 GM |
5541 | |
5542 | ||
5543 | /* Scroll selected_window up or down. If N is nil, scroll a | |
5544 | screen-full which is defined as the height of the window minus | |
5545 | next_screen_context_lines. If N is the symbol `-', scroll. | |
5546 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
5547 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
5548 | |
5549 | static void | |
5550 | scroll_command (n, direction) | |
5500c422 | 5551 | Lisp_Object n; |
7ab12479 JB |
5552 | int direction; |
5553 | { | |
331379bf | 5554 | int count = SPECPDL_INDEX (); |
7ab12479 | 5555 | |
1ea40aa2 | 5556 | xassert (eabs (direction) == 1); |
5500c422 GM |
5557 | |
5558 | /* If selected window's buffer isn't current, make it current for | |
5559 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 5560 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
5561 | { |
5562 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5563 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
5564 | |
5565 | /* Make redisplay consider other windows than just selected_window. */ | |
5566 | ++windows_or_buffers_changed; | |
95605e15 | 5567 | } |
7ab12479 | 5568 | |
265a9e55 | 5569 | if (NILP (n)) |
d4e7cf01 | 5570 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 5571 | else if (EQ (n, Qminus)) |
d4e7cf01 | 5572 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
5573 | else |
5574 | { | |
5575 | n = Fprefix_numeric_value (n); | |
101d1605 | 5576 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 5577 | } |
95605e15 JB |
5578 | |
5579 | unbind_to (count, Qnil); | |
7ab12479 JB |
5580 | } |
5581 | ||
e0965597 | 5582 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
a0a37a6f LT |
5583 | doc: /* Scroll text of current window upward ARG lines. |
5584 | If ARG is omitted or nil, scroll upward by a near full screen. | |
fdb82f93 PJ |
5585 | A near full screen is `next-screen-context-lines' less than a full screen. |
5586 | Negative ARG means scroll downward. | |
5587 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5588 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5589 | (arg) | |
413430c5 | 5590 | Lisp_Object arg; |
7ab12479 | 5591 | { |
413430c5 | 5592 | scroll_command (arg, 1); |
7ab12479 JB |
5593 | return Qnil; |
5594 | } | |
5595 | ||
e0965597 | 5596 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
a0a37a6f LT |
5597 | doc: /* Scroll text of current window down ARG lines. |
5598 | If ARG is omitted or nil, scroll down by a near full screen. | |
fdb82f93 PJ |
5599 | A near full screen is `next-screen-context-lines' less than a full screen. |
5600 | Negative ARG means scroll upward. | |
5601 | If ARG is the atom `-', scroll upward by nearly full screen. | |
5602 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5603 | (arg) | |
413430c5 | 5604 | Lisp_Object arg; |
7ab12479 | 5605 | { |
413430c5 | 5606 | scroll_command (arg, -1); |
7ab12479 JB |
5607 | return Qnil; |
5608 | } | |
ccd0664b RS |
5609 | \f |
5610 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 5611 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 5612 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
5613 | showing that buffer is used. |
5614 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5615 | specifies the window. This takes precedence over | |
5616 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5617 | () |
7ab12479 | 5618 | { |
ccd0664b | 5619 | Lisp_Object window; |
7ab12479 JB |
5620 | |
5621 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 5622 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
5623 | window = Vminibuf_scroll_window; |
5624 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 5625 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
5626 | { |
5627 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 5628 | if (NILP (window)) |
53f76081 | 5629 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
5630 | } |
5631 | else | |
dbc4e1c1 JB |
5632 | { |
5633 | /* Nothing specified; look for a neighboring window on the same | |
5634 | frame. */ | |
5635 | window = Fnext_window (selected_window, Qnil, Qnil); | |
5636 | ||
5637 | if (EQ (window, selected_window)) | |
5638 | /* That didn't get us anywhere; look for a window on another | |
5639 | visible frame. */ | |
5640 | do | |
5641 | window = Fnext_window (window, Qnil, Qt); | |
5642 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
5643 | && ! EQ (window, selected_window)); | |
5644 | } | |
5645 | ||
b7826503 | 5646 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
5647 | |
5648 | if (EQ (window, selected_window)) | |
5649 | error ("There is no other window"); | |
5650 | ||
ccd0664b RS |
5651 | return window; |
5652 | } | |
5653 | ||
5654 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
5655 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
5656 | A near full screen is `next-screen-context-lines' less than a full screen. | |
5657 | The next window is the one below the current one; or the one at the top | |
5658 | if the current one is at the bottom. Negative ARG means scroll downward. | |
5659 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5660 | When calling from a program, supply as argument a number, nil, or `-'. | |
5661 | ||
fdb82f93 | 5662 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5663 | showing that buffer, popping the buffer up if necessary. |
5664 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5665 | specifies the window to scroll. This takes precedence over | |
5666 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5667 | (arg) |
d4e7cf01 | 5668 | Lisp_Object arg; |
ccd0664b | 5669 | { |
d4e7cf01 GM |
5670 | Lisp_Object window; |
5671 | struct window *w; | |
331379bf | 5672 | int count = SPECPDL_INDEX (); |
ccd0664b RS |
5673 | |
5674 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5675 | w = XWINDOW (window); |
7ab12479 JB |
5676 | |
5677 | /* Don't screw up if window_scroll gets an error. */ | |
5678 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5679 | ++windows_or_buffers_changed; |
7ab12479 JB |
5680 | |
5681 | Fset_buffer (w->buffer); | |
5682 | SET_PT (marker_position (w->pointm)); | |
5683 | ||
413430c5 | 5684 | if (NILP (arg)) |
d4e7cf01 | 5685 | window_scroll (window, 1, 1, 1); |
413430c5 | 5686 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5687 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5688 | else |
5689 | { | |
413430c5 EN |
5690 | if (CONSP (arg)) |
5691 | arg = Fcar (arg); | |
b7826503 | 5692 | CHECK_NUMBER (arg); |
101d1605 | 5693 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5694 | } |
5695 | ||
b73ea88e | 5696 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5697 | unbind_to (count, Qnil); |
7ab12479 JB |
5698 | |
5699 | return Qnil; | |
5700 | } | |
5701 | \f | |
e0965597 | 5702 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 5703 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5704 | Default for ARG is window width minus 2. |
5705 | Value is the total amount of leftward horizontal scrolling in | |
5706 | effect after the change. | |
dc297565 RS |
5707 | If SET_MINIMUM is non-nil, the new scroll amount becomes the |
5708 | lower bound for automatic scrolling, i.e. automatic scrolling | |
2fe41216 | 5709 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5710 | by this function. This happens in an interactive call. */) |
5711 | (arg, set_minimum) | |
5712 | register Lisp_Object arg, set_minimum; | |
7ab12479 | 5713 | { |
c67fa410 GM |
5714 | Lisp_Object result; |
5715 | int hscroll; | |
5716 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5717 | |
265a9e55 | 5718 | if (NILP (arg)) |
949cf20f | 5719 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5720 | else |
5721 | arg = Fprefix_numeric_value (arg); | |
5722 | ||
c67fa410 GM |
5723 | hscroll = XINT (w->hscroll) + XINT (arg); |
5724 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
5725 | ||
dc297565 | 5726 | if (!NILP (set_minimum)) |
c67fa410 GM |
5727 | w->min_hscroll = w->hscroll; |
5728 | ||
5729 | return result; | |
7ab12479 JB |
5730 | } |
5731 | ||
e0965597 | 5732 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 5733 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5734 | Default for ARG is window width minus 2. |
5735 | Value is the total amount of leftward horizontal scrolling in | |
5736 | effect after the change. | |
dc297565 RS |
5737 | If SET_MINIMUM is non-nil, the new scroll amount becomes the |
5738 | lower bound for automatic scrolling, i.e. automatic scrolling | |
2fe41216 | 5739 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5740 | by this function. This happens in an interactive call. */) |
5741 | (arg, set_minimum) | |
a93563fd | 5742 | register Lisp_Object arg, set_minimum; |
7ab12479 | 5743 | { |
c67fa410 GM |
5744 | Lisp_Object result; |
5745 | int hscroll; | |
5746 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5747 | |
265a9e55 | 5748 | if (NILP (arg)) |
949cf20f | 5749 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5750 | else |
5751 | arg = Fprefix_numeric_value (arg); | |
5752 | ||
c67fa410 GM |
5753 | hscroll = XINT (w->hscroll) - XINT (arg); |
5754 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
177c0ea7 | 5755 | |
dc297565 | 5756 | if (!NILP (set_minimum)) |
c67fa410 GM |
5757 | w->min_hscroll = w->hscroll; |
5758 | ||
5759 | return result; | |
7ab12479 JB |
5760 | } |
5761 | ||
fa832261 KS |
5762 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5763 | doc: /* Return the window which was selected when entering the minibuffer. | |
5764 | Returns nil, if current window is not a minibuffer window. */) | |
5765 | () | |
5766 | { | |
5767 | if (minibuf_level > 0 | |
5768 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5769 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5770 | return minibuf_selected_window; | |
5771 | ||
5772 | return Qnil; | |
5773 | } | |
5774 | ||
12c8b416 GM |
5775 | /* Value is the number of lines actually displayed in window W, |
5776 | as opposed to its height. */ | |
5777 | ||
5778 | static int | |
5779 | displayed_window_lines (w) | |
5780 | struct window *w; | |
5781 | { | |
5782 | struct it it; | |
5783 | struct text_pos start; | |
5784 | int height = window_box_height (w); | |
5785 | struct buffer *old_buffer; | |
5786 | int bottom_y; | |
5787 | ||
5788 | if (XBUFFER (w->buffer) != current_buffer) | |
5789 | { | |
5790 | old_buffer = current_buffer; | |
5791 | set_buffer_internal (XBUFFER (w->buffer)); | |
5792 | } | |
5793 | else | |
5794 | old_buffer = NULL; | |
5795 | ||
521b203e GM |
5796 | /* In case W->start is out of the accessible range, do something |
5797 | reasonable. This happens in Info mode when Info-scroll-down | |
5798 | calls (recenter -1) while W->start is 1. */ | |
5799 | if (XMARKER (w->start)->charpos < BEGV) | |
5800 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
5801 | else if (XMARKER (w->start)->charpos > ZV) | |
5802 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
5803 | else | |
5804 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5805 | ||
12c8b416 GM |
5806 | start_display (&it, w, start); |
5807 | move_it_vertically (&it, height); | |
c8bc6f65 | 5808 | bottom_y = line_bottom_y (&it); |
12c8b416 | 5809 | |
1de65f51 RS |
5810 | /* rms: On a non-window display, |
5811 | the value of it.vpos at the bottom of the screen | |
5812 | seems to be 1 larger than window_box_height (w). | |
5813 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5814 | when ZV is on the last screen line | |
5815 | moves to the previous screen line instead of the last one. */ | |
5816 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) | |
5817 | height++; | |
5818 | ||
12c8b416 GM |
5819 | /* Add in empty lines at the bottom of the window. */ |
5820 | if (bottom_y < height) | |
5821 | { | |
949cf20f | 5822 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5823 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5824 | } |
5825 | ||
c8bc6f65 GM |
5826 | if (old_buffer) |
5827 | set_buffer_internal (old_buffer); | |
5828 | ||
12c8b416 GM |
5829 | return it.vpos; |
5830 | } | |
5831 | ||
5832 | ||
7ab12479 | 5833 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
fdb82f93 PJ |
5834 | doc: /* Center point in window and redisplay frame. |
5835 | With prefix argument ARG, recenter putting point on screen line ARG | |
5836 | relative to the current window. If ARG is negative, it counts up from the | |
5837 | bottom of the window. (ARG should be less than the height of the window.) | |
5838 | ||
7d1d98ee KS |
5839 | If ARG is omitted or nil, erase the entire frame and then redraw with point |
5840 | in the center of the current window. If `auto-resize-tool-bars' is set to | |
5841 | `grow-only', this resets the tool-bar's height to the minimum height needed. | |
5842 | ||
fdb82f93 PJ |
5843 | Just C-u as prefix means put point in the center of the window |
5844 | and redisplay normally--don't erase and redraw the frame. */) | |
5845 | (arg) | |
413430c5 | 5846 | register Lisp_Object arg; |
7ab12479 | 5847 | { |
6df47b59 | 5848 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
5849 | struct buffer *buf = XBUFFER (w->buffer); |
5850 | struct buffer *obuf = current_buffer; | |
6df47b59 GM |
5851 | int center_p = 0; |
5852 | int charpos, bytepos; | |
f6b43440 RS |
5853 | int iarg; |
5854 | int this_scroll_margin; | |
7ab12479 | 5855 | |
0fa5d25b RS |
5856 | /* If redisplay is suppressed due to an error, try again. */ |
5857 | obuf->display_error_modiff = 0; | |
5858 | ||
413430c5 | 5859 | if (NILP (arg)) |
7ab12479 | 5860 | { |
f02d6d5c KH |
5861 | int i; |
5862 | ||
5863 | /* Invalidate pixel data calculated for all compositions. */ | |
5864 | for (i = 0; i < n_compositions; i++) | |
5865 | composition_table[i]->font = NULL; | |
7ab12479 | 5866 | |
7d1d98ee KS |
5867 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5868 | ||
5869 | Fredraw_frame (WINDOW_FRAME (w)); | |
5870 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
6df47b59 | 5871 | center_p = 1; |
7ab12479 | 5872 | } |
413430c5 | 5873 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5874 | center_p = 1; |
7ab12479 JB |
5875 | else |
5876 | { | |
413430c5 | 5877 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5878 | CHECK_NUMBER (arg); |
ae12ecd7 | 5879 | iarg = XINT (arg); |
7ab12479 JB |
5880 | } |
5881 | ||
478292ed | 5882 | set_buffer_internal (buf); |
7ab12479 | 5883 | |
f6b43440 RS |
5884 | /* Do this after making BUF current |
5885 | in case scroll_margin is buffer-local. */ | |
5886 | this_scroll_margin = max (0, scroll_margin); | |
5887 | this_scroll_margin = min (this_scroll_margin, | |
5888 | XFASTINT (w->total_lines) / 4); | |
5889 | ||
521b203e | 5890 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5891 | have variable-height lines and centering point on the basis of |
5892 | line counts would lead to strange effects. */ | |
521b203e | 5893 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5894 | { |
6df47b59 GM |
5895 | if (center_p) |
5896 | { | |
521b203e GM |
5897 | struct it it; |
5898 | struct text_pos pt; | |
177c0ea7 | 5899 | |
521b203e GM |
5900 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5901 | start_display (&it, w, pt); | |
f204989e | 5902 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5903 | charpos = IT_CHARPOS (it); |
5904 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5905 | } |
f6b43440 | 5906 | else if (iarg < 0) |
6df47b59 | 5907 | { |
521b203e GM |
5908 | struct it it; |
5909 | struct text_pos pt; | |
f6b43440 | 5910 | int nlines = -iarg; |
f204989e KS |
5911 | int extra_line_spacing; |
5912 | int h = window_box_height (w); | |
177c0ea7 | 5913 | |
f6b43440 RS |
5914 | iarg = - max (-iarg, this_scroll_margin); |
5915 | ||
521b203e GM |
5916 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5917 | start_display (&it, w, pt); | |
f204989e KS |
5918 | |
5919 | /* Be sure we have the exact height of the full line containing PT. */ | |
5920 | move_it_by_lines (&it, 0, 1); | |
521b203e | 5921 | |
d466fa4d | 5922 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5923 | height minus what's displayed in the line containing PT, |
5924 | and the lines below. */ | |
f204989e KS |
5925 | it.current_y = 0; |
5926 | it.vpos = 0; | |
d466fa4d GM |
5927 | move_it_by_lines (&it, nlines, 1); |
5928 | ||
f204989e KS |
5929 | if (it.vpos == nlines) |
5930 | h -= it.current_y; | |
5931 | else | |
5932 | { | |
5933 | /* Last line has no newline */ | |
5934 | h -= line_bottom_y (&it); | |
5935 | it.vpos++; | |
5936 | } | |
5937 | ||
5938 | /* Don't reserve space for extra line spacing of last line. */ | |
5939 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5940 | |
5941 | /* If we can't move down NLINES lines because we hit | |
5942 | the end of the buffer, count in some empty lines. */ | |
5943 | if (it.vpos < nlines) | |
f204989e KS |
5944 | { |
5945 | nlines -= it.vpos; | |
5946 | extra_line_spacing = it.extra_line_spacing; | |
5947 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5948 | } | |
5949 | if (h <= 0) | |
5950 | return Qnil; | |
201c831a | 5951 | |
f204989e | 5952 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5953 | start_display (&it, w, pt); |
f204989e KS |
5954 | it.current_y = 0; |
5955 | move_it_vertically_backward (&it, h); | |
5956 | ||
5957 | /* If extra line spacing is present, we may move too far | |
5958 | back. This causes the last line to be only partially | |
5959 | visible (which triggers redisplay to recenter that line | |
5960 | in the middle), so move forward. | |
5961 | But ignore extra line spacing on last line, as it is not | |
5962 | considered to be part of the visible height of the line. | |
5963 | */ | |
5964 | h += extra_line_spacing; | |
5965 | while (-it.current_y > h) | |
5966 | move_it_by_lines (&it, 1, 1); | |
5967 | ||
521b203e GM |
5968 | charpos = IT_CHARPOS (it); |
5969 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5970 | } |
521b203e GM |
5971 | else |
5972 | { | |
5973 | struct position pos; | |
f6b43440 | 5974 | |
f6b43440 RS |
5975 | iarg = max (iarg, this_scroll_margin); |
5976 | ||
5977 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5978 | charpos = pos.bufpos; |
5979 | bytepos = pos.bytepos; | |
5980 | } | |
5981 | } | |
5982 | else | |
5983 | { | |
5984 | struct position pos; | |
5985 | int ht = window_internal_height (w); | |
5986 | ||
5987 | if (center_p) | |
a4429c5b | 5988 | iarg = ht / 2; |
f567c488 KS |
5989 | else if (iarg < 0) |
5990 | iarg += ht; | |
f6b43440 RS |
5991 | |
5992 | /* Don't let it get into the margin at either top or bottom. */ | |
5993 | iarg = max (iarg, this_scroll_margin); | |
5994 | iarg = min (iarg, ht - this_scroll_margin - 1); | |
177c0ea7 | 5995 | |
f6b43440 | 5996 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
5997 | charpos = pos.bufpos; |
5998 | bytepos = pos.bytepos; | |
5999 | } | |
6000 | ||
6001 | /* Set the new window start. */ | |
6002 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 6003 | w->window_end_valid = Qnil; |
177c0ea7 | 6004 | |
95605b1b RS |
6005 | w->optional_new_start = Qt; |
6006 | ||
6df47b59 GM |
6007 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
6008 | w->start_at_line_beg = Qt; | |
6009 | else | |
6010 | w->start_at_line_beg = Qnil; | |
177c0ea7 | 6011 | |
478292ed | 6012 | set_buffer_internal (obuf); |
7ab12479 JB |
6013 | return Qnil; |
6014 | } | |
b7617575 GM |
6015 | |
6016 | ||
81fe0836 | 6017 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
6018 | 0, 1, 0, |
6019 | doc: /* Return the height in lines of the text display area of WINDOW. | |
c85322d0 | 6020 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
6021 | This doesn't include the mode-line (or header-line if any) or any |
6022 | partial-height lines in the text display area. */) | |
6023 | (window) | |
81fe0836 MB |
6024 | Lisp_Object window; |
6025 | { | |
6026 | struct window *w = decode_window (window); | |
6027 | int pixel_height = window_box_height (w); | |
949cf20f | 6028 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
6029 | return make_number (line_height); |
6030 | } | |
6031 | ||
6032 | ||
7ab12479 JB |
6033 | \f |
6034 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
6035 | 1, 1, "P", |
6036 | doc: /* Position point relative to window. | |
6037 | With no argument, position point at center of window. | |
6038 | An argument specifies vertical position within the window; | |
6039 | zero means top of window, negative means relative to bottom of window. */) | |
6040 | (arg) | |
b7617575 | 6041 | Lisp_Object arg; |
7ab12479 | 6042 | { |
b7617575 GM |
6043 | struct window *w = XWINDOW (selected_window); |
6044 | int lines, start; | |
540b6aa0 | 6045 | Lisp_Object window; |
f6b43440 RS |
6046 | #if 0 |
6047 | int this_scroll_margin; | |
6048 | #endif | |
7ab12479 | 6049 | |
b7617575 | 6050 | window = selected_window; |
7ab12479 JB |
6051 | start = marker_position (w->start); |
6052 | if (start < BEGV || start > ZV) | |
6053 | { | |
b7617575 | 6054 | int height = window_internal_height (w); |
cd2be1dd | 6055 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 6056 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
6057 | w->start_at_line_beg = Fbolp (); |
6058 | w->force_start = Qt; | |
6059 | } | |
6060 | else | |
b73ea88e | 6061 | Fgoto_char (w->start); |
7ab12479 | 6062 | |
b7617575 | 6063 | lines = displayed_window_lines (w); |
f6b43440 RS |
6064 | |
6065 | #if 0 | |
6066 | this_scroll_margin = max (0, scroll_margin); | |
6067 | this_scroll_margin = min (this_scroll_margin, lines / 4); | |
6068 | #endif | |
6069 | ||
b7617575 GM |
6070 | if (NILP (arg)) |
6071 | XSETFASTINT (arg, lines / 2); | |
6072 | else | |
6073 | { | |
f6b43440 RS |
6074 | int iarg = XINT (Fprefix_numeric_value (arg)); |
6075 | ||
6076 | if (iarg < 0) | |
6077 | iarg = iarg + lines; | |
6078 | ||
6079 | #if 0 /* This code would prevent move-to-window-line from moving point | |
6080 | to a place inside the scroll margins (which would cause the | |
6081 | next redisplay to scroll). I wrote this code, but then concluded | |
6082 | it is probably better not to install it. However, it is here | |
6083 | inside #if 0 so as not to lose it. -- rms. */ | |
6084 | ||
6085 | /* Don't let it get into the margin at either top or bottom. */ | |
6086 | iarg = max (iarg, this_scroll_margin); | |
6087 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
6088 | #endif | |
6089 | ||
6090 | arg = make_number (iarg); | |
b7617575 GM |
6091 | } |
6092 | ||
c8bc6f65 | 6093 | /* Skip past a partially visible first line. */ |
163784df | 6094 | if (w->vscroll) |
163784df MB |
6095 | XSETINT (arg, XINT (arg) + 1); |
6096 | ||
540b6aa0 | 6097 | return Fvertical_motion (arg, window); |
7ab12479 | 6098 | } |
5500c422 GM |
6099 | |
6100 | ||
7ab12479 | 6101 | \f |
5500c422 GM |
6102 | /*********************************************************************** |
6103 | Window Configuration | |
6104 | ***********************************************************************/ | |
6105 | ||
7ab12479 JB |
6106 | struct save_window_data |
6107 | { | |
d0fdb6da | 6108 | EMACS_UINT size; |
7ab12479 | 6109 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
bdc727bf | 6110 | Lisp_Object selected_frame; |
7ab12479 JB |
6111 | Lisp_Object current_window; |
6112 | Lisp_Object current_buffer; | |
6113 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 6114 | Lisp_Object minibuf_selected_window; |
7ab12479 | 6115 | Lisp_Object root_window; |
bdc727bf | 6116 | Lisp_Object focus_frame; |
cbff28e8 RS |
6117 | /* A vector, each of whose elements is a struct saved_window |
6118 | for one window. */ | |
7ab12479 | 6119 | Lisp_Object saved_windows; |
b05b4e27 SM |
6120 | |
6121 | /* All fields above are traced by the GC. | |
6122 | From `fame-cols' down, the fields are ignored by the GC. */ | |
6123 | ||
6124 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
6125 | int frame_tool_bar_lines; | |
7ab12479 | 6126 | }; |
ff06df24 | 6127 | |
cbff28e8 | 6128 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 6129 | struct saved_window |
ea68264b GM |
6130 | { |
6131 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
d0fdb6da | 6132 | EMACS_UINT size; |
ea68264b | 6133 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
7ab12479 | 6134 | |
ea68264b GM |
6135 | Lisp_Object window; |
6136 | Lisp_Object buffer, start, pointm, mark; | |
949cf20f KS |
6137 | Lisp_Object left_col, top_line, total_cols, total_lines; |
6138 | Lisp_Object hscroll, min_hscroll; | |
ea68264b GM |
6139 | Lisp_Object parent, prev; |
6140 | Lisp_Object start_at_line_beg; | |
6141 | Lisp_Object display_table; | |
949cf20f KS |
6142 | Lisp_Object orig_top_line, orig_total_lines; |
6143 | Lisp_Object left_margin_cols, right_margin_cols; | |
6144 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
6145 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type; | |
047aaeb9 | 6146 | Lisp_Object dedicated, resize_proportionally; |
ea68264b GM |
6147 | }; |
6148 | ||
7ab12479 JB |
6149 | #define SAVED_WINDOW_N(swv,n) \ |
6150 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
6151 | ||
6152 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 PJ |
6153 | doc: /* Return t if OBJECT is a window-configuration object. */) |
6154 | (object) | |
413430c5 | 6155 | Lisp_Object object; |
7ab12479 | 6156 | { |
6ad0381c | 6157 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
6158 | } |
6159 | ||
3f8ab7bd | 6160 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 PJ |
6161 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
6162 | (config) | |
3f8ab7bd RS |
6163 | Lisp_Object config; |
6164 | { | |
6165 | register struct save_window_data *data; | |
6166 | struct Lisp_Vector *saved_windows; | |
6167 | ||
663fbbba | 6168 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
6169 | |
6170 | data = (struct save_window_data *) XVECTOR (config); | |
6171 | saved_windows = XVECTOR (data->saved_windows); | |
6172 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
6173 | } | |
6174 | ||
d5b2799e | 6175 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
6176 | Sset_window_configuration, 1, 1, 0, |
6177 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
6178 | CONFIGURATION must be a value previously returned | |
6179 | by `current-window-configuration' (which see). | |
6180 | If CONFIGURATION was made from a frame that is now deleted, | |
6181 | only frame-independent values can be restored. In this case, | |
6182 | the return value is nil. Otherwise the value is t. */) | |
6183 | (configuration) | |
2f83aebe | 6184 | Lisp_Object configuration; |
7ab12479 | 6185 | { |
7ab12479 JB |
6186 | register struct save_window_data *data; |
6187 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 6188 | Lisp_Object new_current_buffer; |
fd482be5 | 6189 | Lisp_Object frame; |
44fa5b1e | 6190 | FRAME_PTR f; |
72695e47 | 6191 | int old_point = -1; |
7ab12479 | 6192 | |
663fbbba | 6193 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 6194 | |
2f83aebe | 6195 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
6196 | saved_windows = XVECTOR (data->saved_windows); |
6197 | ||
7ab12479 | 6198 | new_current_buffer = data->current_buffer; |
265a9e55 | 6199 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 6200 | new_current_buffer = Qnil; |
72695e47 | 6201 | else |
73cadfc1 DK |
6202 | { |
6203 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
6204 | /* The code further down "preserves point" by saving here PT in |
6205 | old_point and then setting it later back into PT. When the | |
6206 | current-selected-window and the final-selected-window both show | |
6207 | the current buffer, this suffers from the problem that the | |
6208 | current PT is the window-point of the current-selected-window, | |
6209 | while the final PT is the point of the final-selected-window, so | |
6210 | this copy from one PT to the other would end up moving the | |
6211 | window-point of the final-selected-window to the window-point of | |
6212 | the current-selected-window. So we have to be careful which | |
6213 | point of the current-buffer we copy into old_point. */ | |
6214 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
6215 | && WINDOWP (selected_window) | |
6216 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) | |
6217 | && !EQ (selected_window, data->current_window)) | |
6218 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
6219 | else | |
6220 | old_point = PT; | |
73cadfc1 | 6221 | else |
203eb0aa SM |
6222 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
6223 | point in new_current_buffer as of the last time this buffer was | |
6224 | used. This can be non-deterministic since it can be changed by | |
6225 | things like jit-lock by mere temporary selection of some random | |
6226 | window that happens to show this buffer. | |
6227 | So if possible we want this arbitrary choice of "which point" to | |
6228 | be the one from the to-be-selected-window so as to prevent this | |
6229 | window's cursor from being copied from another window. */ | |
6230 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
6231 | /* If current_window = selected_window, its point is in BUF_PT. */ | |
6232 | && !EQ (selected_window, data->current_window)) | |
6233 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
6234 | else | |
6235 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 6236 | } |
7ab12479 | 6237 | |
fd482be5 JB |
6238 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
6239 | f = XFRAME (frame); | |
177c0ea7 | 6240 | |
fd482be5 JB |
6241 | /* If f is a dead frame, don't bother rebuilding its window tree. |
6242 | However, there is other stuff we should still try to do below. */ | |
6243 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 6244 | { |
fd482be5 JB |
6245 | register struct window *w; |
6246 | register struct saved_window *p; | |
5500c422 GM |
6247 | struct window *root_window; |
6248 | struct window **leaf_windows; | |
6249 | int n_leaf_windows; | |
c4280705 | 6250 | int k, i, n; |
fd482be5 JB |
6251 | |
6252 | /* If the frame has been resized since this window configuration was | |
6253 | made, we change the frame to the size specified in the | |
6254 | configuration, restore the configuration, and then resize it | |
6255 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
6256 | int previous_frame_lines = FRAME_LINES (f); |
6257 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 6258 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 6259 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 6260 | |
d2b35234 RS |
6261 | /* The mouse highlighting code could get screwed up |
6262 | if it runs during this. */ | |
6263 | BLOCK_INPUT; | |
6264 | ||
b05b4e27 SM |
6265 | if (data->frame_lines != previous_frame_lines |
6266 | || data->frame_cols != previous_frame_cols) | |
6267 | change_frame_size (f, data->frame_lines, | |
6268 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 6269 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 6270 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 6271 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
6272 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
6273 | make_number (0)); | |
4314246f | 6274 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 6275 | if (data->frame_tool_bar_lines |
9ea173e8 | 6276 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
6277 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
6278 | make_number (0)); | |
4314246f | 6279 | #endif |
217f2871 | 6280 | #endif |
fd482be5 | 6281 | |
a46c0153 RS |
6282 | /* "Swap out" point from the selected window's buffer |
6283 | into the window itself. (Normally the pointm of the selected | |
6284 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
6285 | restoring the window contents, and prevent it from |
6286 | being done later on when we select a new window. */ | |
596ae0cf RS |
6287 | if (! NILP (XWINDOW (selected_window)->buffer)) |
6288 | { | |
6289 | w = XWINDOW (selected_window); | |
6290 | set_marker_both (w->pointm, | |
6291 | w->buffer, | |
6292 | BUF_PT (XBUFFER (w->buffer)), | |
6293 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
6294 | } | |
6295 | ||
fd482be5 | 6296 | windows_or_buffers_changed++; |
29aeee73 | 6297 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 6298 | |
5500c422 | 6299 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 6300 | is a serious redisplay flickering problem. What we would |
5500c422 GM |
6301 | really like to do is to free only those matrices not reused |
6302 | below. */ | |
6303 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
6304 | leaf_windows | |
6305 | = (struct window **) alloca (count_windows (root_window) | |
6306 | * sizeof (struct window *)); | |
6307 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
6308 | ||
fd482be5 JB |
6309 | /* Kludge Alert! |
6310 | Mark all windows now on frame as "deleted". | |
6311 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 6312 | |
fd482be5 JB |
6313 | Save their current buffers in their height fields, since we may |
6314 | need it later, if a buffer saved in the configuration is now | |
6315 | dead. */ | |
6316 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
6317 | ||
6318 | for (k = 0; k < saved_windows->size; k++) | |
6319 | { | |
6320 | p = SAVED_WINDOW_N (saved_windows, k); | |
6321 | w = XWINDOW (p->window); | |
6322 | w->next = Qnil; | |
7ab12479 | 6323 | |
fd482be5 JB |
6324 | if (!NILP (p->parent)) |
6325 | w->parent = SAVED_WINDOW_N (saved_windows, | |
6326 | XFASTINT (p->parent))->window; | |
6327 | else | |
6328 | w->parent = Qnil; | |
7ab12479 | 6329 | |
fd482be5 | 6330 | if (!NILP (p->prev)) |
7ab12479 | 6331 | { |
fd482be5 JB |
6332 | w->prev = SAVED_WINDOW_N (saved_windows, |
6333 | XFASTINT (p->prev))->window; | |
6334 | XWINDOW (w->prev)->next = p->window; | |
6335 | } | |
6336 | else | |
6337 | { | |
6338 | w->prev = Qnil; | |
6339 | if (!NILP (w->parent)) | |
6340 | { | |
949cf20f | 6341 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 JB |
6342 | { |
6343 | XWINDOW (w->parent)->vchild = p->window; | |
6344 | XWINDOW (w->parent)->hchild = Qnil; | |
6345 | } | |
6346 | else | |
6347 | { | |
6348 | XWINDOW (w->parent)->hchild = p->window; | |
6349 | XWINDOW (w->parent)->vchild = Qnil; | |
6350 | } | |
6351 | } | |
6352 | } | |
6353 | ||
6354 | /* If we squirreled away the buffer in the window's height, | |
6355 | restore it now. */ | |
949cf20f KS |
6356 | if (BUFFERP (w->total_lines)) |
6357 | w->buffer = w->total_lines; | |
6358 | w->left_col = p->left_col; | |
6359 | w->top_line = p->top_line; | |
6360 | w->total_cols = p->total_cols; | |
6361 | w->total_lines = p->total_lines; | |
fd482be5 | 6362 | w->hscroll = p->hscroll; |
ea68264b | 6363 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 6364 | w->display_table = p->display_table; |
949cf20f KS |
6365 | w->orig_top_line = p->orig_top_line; |
6366 | w->orig_total_lines = p->orig_total_lines; | |
6367 | w->left_margin_cols = p->left_margin_cols; | |
6368 | w->right_margin_cols = p->right_margin_cols; | |
6369 | w->left_fringe_width = p->left_fringe_width; | |
6370 | w->right_fringe_width = p->right_fringe_width; | |
6371 | w->fringes_outside_margins = p->fringes_outside_margins; | |
6372 | w->scroll_bar_width = p->scroll_bar_width; | |
6373 | w->vertical_scroll_bar_type = p->vertical_scroll_bar_type; | |
6ad0381c | 6374 | w->dedicated = p->dedicated; |
047aaeb9 | 6375 | w->resize_proportionally = p->resize_proportionally; |
d834a2e9 | 6376 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 6377 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
6378 | |
6379 | /* Reinstall the saved buffer and pointers into it. */ | |
6380 | if (NILP (p->buffer)) | |
6381 | w->buffer = p->buffer; | |
6382 | else | |
6383 | { | |
6384 | if (!NILP (XBUFFER (p->buffer)->name)) | |
6385 | /* If saved buffer is alive, install it. */ | |
6386 | { | |
6387 | w->buffer = p->buffer; | |
6388 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
6389 | set_marker_restricted (w->start, p->start, w->buffer); |
6390 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 6391 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 6392 | p->mark, w->buffer); |
fd482be5 JB |
6393 | |
6394 | /* As documented in Fcurrent_window_configuration, don't | |
243a5ce6 RS |
6395 | restore the location of point in the buffer which was |
6396 | current when the window configuration was recorded. */ | |
6b54027b RS |
6397 | if (!EQ (p->buffer, new_current_buffer) |
6398 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
6399 | Fgoto_char (w->pointm); |
6400 | } | |
52a68e98 RS |
6401 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
6402 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 6403 | { |
fd482be5 JB |
6404 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
6405 | /* This will set the markers to beginning of visible | |
6406 | range. */ | |
6407 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
6408 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
6409 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
6410 | } |
6411 | else | |
fd482be5 | 6412 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 6413 | are real. */ |
7ab12479 | 6414 | { |
fd482be5 JB |
6415 | /* Set window markers at start of visible range. */ |
6416 | if (XMARKER (w->start)->buffer == 0) | |
6417 | set_marker_restricted (w->start, make_number (0), | |
6418 | w->buffer); | |
6419 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
6420 | set_marker_restricted_both (w->pointm, w->buffer, |
6421 | BUF_PT (XBUFFER (w->buffer)), | |
6422 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 6423 | w->start_at_line_beg = Qt; |
7ab12479 JB |
6424 | } |
6425 | } | |
6426 | } | |
9ace597f | 6427 | |
fd482be5 | 6428 | FRAME_ROOT_WINDOW (f) = data->root_window; |
719eaeb1 GM |
6429 | /* Prevent "swapping out point" in the old selected window |
6430 | using the buffer that has been restored into it. | |
a46c0153 | 6431 | We already swapped out point that from that window's old buffer. */ |
719eaeb1 | 6432 | selected_window = Qnil; |
a46c0153 RS |
6433 | |
6434 | /* Arrange *not* to restore point in the buffer that was | |
6435 | current when the window configuration was saved. */ | |
243a5ce6 RS |
6436 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
6437 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 6438 | make_number (old_point), |
243a5ce6 | 6439 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 6440 | |
14d87dc9 | 6441 | Fselect_window (data->current_window, Qnil); |
396a830c RS |
6442 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
6443 | = selected_window; | |
7ab12479 | 6444 | |
db269683 | 6445 | if (NILP (data->focus_frame) |
017b2bad | 6446 | || (FRAMEP (data->focus_frame) |
db269683 JB |
6447 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
6448 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 6449 | |
fd482be5 JB |
6450 | #if 0 /* I don't understand why this is needed, and it causes problems |
6451 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 6452 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 | 6453 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
d12f6f83 | 6454 | 0, 0); |
fd482be5 JB |
6455 | #endif |
6456 | ||
6457 | /* Set the screen height to the value it had before this function. */ | |
949cf20f KS |
6458 | if (previous_frame_lines != FRAME_LINES (f) |
6459 | || previous_frame_cols != FRAME_COLS (f)) | |
6460 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 6461 | 0, 0, 0); |
e3678b64 | 6462 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 6463 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
6464 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
6465 | make_number (0)); | |
4314246f | 6466 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
6467 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
6468 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
6469 | make_number (0)); | |
4314246f | 6470 | #endif |
217f2871 | 6471 | #endif |
d2b35234 | 6472 | |
5500c422 | 6473 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
6474 | for (i = n = 0; i < n_leaf_windows; ++i) |
6475 | { | |
6476 | if (NILP (leaf_windows[i]->buffer)) | |
6477 | { | |
6478 | /* Assert it's not reused as a combination. */ | |
177c0ea7 | 6479 | xassert (NILP (leaf_windows[i]->hchild) |
c4280705 GM |
6480 | && NILP (leaf_windows[i]->vchild)); |
6481 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
6482 | } |
6483 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
6484 | ++n; | |
6485 | } | |
177c0ea7 | 6486 | |
5500c422 GM |
6487 | adjust_glyphs (f); |
6488 | ||
d2b35234 | 6489 | UNBLOCK_INPUT; |
756b6edc | 6490 | |
478292ed RS |
6491 | /* Fselect_window will have made f the selected frame, so we |
6492 | reselect the proper frame here. Fhandle_switch_frame will change the | |
6493 | selected window too, but that doesn't make the call to | |
6494 | Fselect_window above totally superfluous; it still sets f's | |
6495 | selected window. */ | |
6496 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
d12f6f83 | 6497 | do_switch_frame (data->selected_frame, 0, 0); |
478292ed | 6498 | |
eeca6f6f | 6499 | run_window_configuration_change_hook (f); |
478292ed | 6500 | } |
bdc727bf JB |
6501 | |
6502 | if (!NILP (new_current_buffer)) | |
243a5ce6 | 6503 | Fset_buffer (new_current_buffer); |
bdc727bf | 6504 | |
478292ed | 6505 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 6506 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 6507 | |
3f8ab7bd | 6508 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
6509 | } |
6510 | ||
44fa5b1e | 6511 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
6512 | by setting their buffers to nil. */ |
6513 | ||
fd482be5 | 6514 | void |
7ab12479 JB |
6515 | delete_all_subwindows (w) |
6516 | register struct window *w; | |
6517 | { | |
265a9e55 | 6518 | if (!NILP (w->next)) |
7ab12479 | 6519 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 6520 | if (!NILP (w->vchild)) |
7ab12479 | 6521 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 6522 | if (!NILP (w->hchild)) |
7ab12479 | 6523 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af | 6524 | |
949cf20f | 6525 | w->total_lines = w->buffer; /* See Fset_window_configuration for excuse. */ |
605be8af | 6526 | |
86e48436 RS |
6527 | if (!NILP (w->buffer)) |
6528 | unshow_buffer (w); | |
6529 | ||
605be8af JB |
6530 | /* We set all three of these fields to nil, to make sure that we can |
6531 | distinguish this dead window from any live window. Live leaf | |
6532 | windows will have buffer set, and combination windows will have | |
6533 | vchild or hchild set. */ | |
6534 | w->buffer = Qnil; | |
6535 | w->vchild = Qnil; | |
6536 | w->hchild = Qnil; | |
acf70840 GM |
6537 | |
6538 | Vwindow_list = Qnil; | |
7ab12479 JB |
6539 | } |
6540 | \f | |
6541 | static int | |
6542 | count_windows (window) | |
6543 | register struct window *window; | |
6544 | { | |
6545 | register int count = 1; | |
265a9e55 | 6546 | if (!NILP (window->next)) |
7ab12479 | 6547 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 6548 | if (!NILP (window->vchild)) |
7ab12479 | 6549 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 6550 | if (!NILP (window->hchild)) |
7ab12479 JB |
6551 | count += count_windows (XWINDOW (window->hchild)); |
6552 | return count; | |
6553 | } | |
6554 | ||
5500c422 | 6555 | |
177c0ea7 | 6556 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 GM |
6557 | Value is last index + 1. */ |
6558 | ||
6559 | static int | |
6560 | get_leaf_windows (w, flat, i) | |
6561 | struct window *w; | |
6562 | struct window **flat; | |
6563 | int i; | |
6564 | { | |
6565 | while (w) | |
6566 | { | |
6567 | if (!NILP (w->hchild)) | |
6568 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
6569 | else if (!NILP (w->vchild)) | |
6570 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 6571 | else |
5500c422 GM |
6572 | flat[i++] = w; |
6573 | ||
6574 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6575 | } | |
6576 | ||
6577 | return i; | |
6578 | } | |
6579 | ||
6580 | ||
6581 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
6582 | null if W's current matrix is invalid, so that no meaningfull glyph | |
6583 | can be returned. */ | |
6584 | ||
6585 | struct glyph * | |
6586 | get_phys_cursor_glyph (w) | |
6587 | struct window *w; | |
6588 | { | |
6589 | struct glyph_row *row; | |
6590 | struct glyph *glyph; | |
6591 | ||
6592 | if (w->phys_cursor.vpos >= 0 | |
6593 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
6594 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
6595 | row->enabled_p) | |
6596 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
6597 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
6598 | else | |
6599 | glyph = NULL; | |
6600 | ||
6601 | return glyph; | |
6602 | } | |
6603 | ||
6604 | ||
7ab12479 JB |
6605 | static int |
6606 | save_window_save (window, vector, i) | |
6607 | Lisp_Object window; | |
6608 | struct Lisp_Vector *vector; | |
6609 | int i; | |
6610 | { | |
6611 | register struct saved_window *p; | |
6612 | register struct window *w; | |
6613 | register Lisp_Object tem; | |
6614 | ||
265a9e55 | 6615 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
6616 | { |
6617 | p = SAVED_WINDOW_N (vector, i); | |
6618 | w = XWINDOW (window); | |
6619 | ||
2a1893f4 | 6620 | XSETFASTINT (w->temslot, i); i++; |
7ab12479 JB |
6621 | p->window = window; |
6622 | p->buffer = w->buffer; | |
949cf20f KS |
6623 | p->left_col = w->left_col; |
6624 | p->top_line = w->top_line; | |
6625 | p->total_cols = w->total_cols; | |
6626 | p->total_lines = w->total_lines; | |
7ab12479 | 6627 | p->hscroll = w->hscroll; |
ea68264b | 6628 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 6629 | p->display_table = w->display_table; |
949cf20f KS |
6630 | p->orig_top_line = w->orig_top_line; |
6631 | p->orig_total_lines = w->orig_total_lines; | |
6632 | p->left_margin_cols = w->left_margin_cols; | |
6633 | p->right_margin_cols = w->right_margin_cols; | |
6634 | p->left_fringe_width = w->left_fringe_width; | |
6635 | p->right_fringe_width = w->right_fringe_width; | |
6636 | p->fringes_outside_margins = w->fringes_outside_margins; | |
6637 | p->scroll_bar_width = w->scroll_bar_width; | |
6638 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6ad0381c | 6639 | p->dedicated = w->dedicated; |
047aaeb9 | 6640 | p->resize_proportionally = w->resize_proportionally; |
265a9e55 | 6641 | if (!NILP (w->buffer)) |
7ab12479 JB |
6642 | { |
6643 | /* Save w's value of point in the window configuration. | |
6644 | If w is the selected window, then get the value of point | |
6645 | from the buffer; pointm is garbage in the selected window. */ | |
6646 | if (EQ (window, selected_window)) | |
6647 | { | |
6648 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
6649 | set_marker_both (p->pointm, w->buffer, |
6650 | BUF_PT (XBUFFER (w->buffer)), | |
6651 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
6652 | } |
6653 | else | |
eeb82665 | 6654 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 6655 | |
eeb82665 | 6656 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
6657 | p->start_at_line_beg = w->start_at_line_beg; |
6658 | ||
6659 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 6660 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6661 | } |
6662 | else | |
6663 | { | |
6664 | p->pointm = Qnil; | |
6665 | p->start = Qnil; | |
6666 | p->mark = Qnil; | |
6667 | p->start_at_line_beg = Qnil; | |
6668 | } | |
6669 | ||
265a9e55 | 6670 | if (NILP (w->parent)) |
7ab12479 JB |
6671 | p->parent = Qnil; |
6672 | else | |
6673 | p->parent = XWINDOW (w->parent)->temslot; | |
6674 | ||
265a9e55 | 6675 | if (NILP (w->prev)) |
7ab12479 JB |
6676 | p->prev = Qnil; |
6677 | else | |
6678 | p->prev = XWINDOW (w->prev)->temslot; | |
6679 | ||
265a9e55 | 6680 | if (!NILP (w->vchild)) |
7ab12479 | 6681 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 6682 | if (!NILP (w->hchild)) |
7ab12479 JB |
6683 | i = save_window_save (w->hchild, vector, i); |
6684 | } | |
6685 | ||
6686 | return i; | |
6687 | } | |
6688 | ||
a0d76c27 | 6689 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6690 | Scurrent_window_configuration, 0, 1, 0, |
6691 | doc: /* Return an object representing the current window configuration of FRAME. | |
6692 | If FRAME is nil or omitted, use the selected frame. | |
6693 | This describes the number of windows, their sizes and current buffers, | |
6694 | and for each displayed buffer, where display starts, and the positions of | |
6695 | point and mark. An exception is made for point in the current buffer: | |
6696 | its value is -not- saved. | |
6697 | This also records the currently selected frame, and FRAME's focus | |
6698 | redirection (see `redirect-frame-focus'). */) | |
6699 | (frame) | |
44fa5b1e | 6700 | Lisp_Object frame; |
7ab12479 JB |
6701 | { |
6702 | register Lisp_Object tem; | |
6703 | register int n_windows; | |
6704 | register struct save_window_data *data; | |
6705 | register int i; | |
44fa5b1e | 6706 | FRAME_PTR f; |
43bad991 | 6707 | |
44fa5b1e | 6708 | if (NILP (frame)) |
1ae1a37d | 6709 | frame = selected_frame; |
b7826503 | 6710 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 6711 | f = XFRAME (frame); |
7ab12479 | 6712 | |
44fa5b1e | 6713 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
6714 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
6715 | PVEC_WINDOW_CONFIGURATION); | |
6716 | ||
6717 | data->frame_cols = FRAME_COLS (f); | |
6718 | data->frame_lines = FRAME_LINES (f); | |
6719 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
6720 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 6721 | data->selected_frame = selected_frame; |
44fa5b1e | 6722 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6723 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6724 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6725 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6726 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6727 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
7ab12479 JB |
6728 | tem = Fmake_vector (make_number (n_windows), Qnil); |
6729 | data->saved_windows = tem; | |
6730 | for (i = 0; i < n_windows; i++) | |
6731 | XVECTOR (tem)->contents[i] | |
8a450f0a | 6732 | = Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil); |
a1d58e5b | 6733 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6734 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6735 | return (tem); |
6736 | } | |
6737 | ||
6738 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
fdb82f93 | 6739 | 0, UNEVALLED, 0, |
a0a37a6f LT |
6740 | doc: /* Execute BODY, preserving window sizes and contents. |
6741 | Return the value of the last form in BODY. | |
fdb82f93 PJ |
6742 | Restore which buffer appears in which window, where display starts, |
6743 | and the value of point and mark for each window. | |
6744 | Also restore the choice of selected window. | |
6745 | Also restore which buffer is current. | |
6924dda6 | 6746 | Does not restore the value of point in current buffer. |
7254a30c | 6747 | usage: (save-window-excursion BODY...) */) |
fdb82f93 | 6748 | (args) |
7ab12479 JB |
6749 | Lisp_Object args; |
6750 | { | |
6751 | register Lisp_Object val; | |
aed13378 | 6752 | register int count = SPECPDL_INDEX (); |
7ab12479 JB |
6753 | |
6754 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 6755 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
6756 | val = Fprogn (args); |
6757 | return unbind_to (count, val); | |
6758 | } | |
5500c422 | 6759 | |
94e16dd5 KS |
6760 | |
6761 | \f | |
6762 | /*********************************************************************** | |
6763 | Window Split Tree | |
6764 | ***********************************************************************/ | |
6765 | ||
6766 | static Lisp_Object | |
c16e1cc3 | 6767 | window_tree (w) |
94e16dd5 KS |
6768 | struct window *w; |
6769 | { | |
6770 | Lisp_Object tail = Qnil; | |
6771 | Lisp_Object result = Qnil; | |
6772 | ||
6773 | while (w) | |
6774 | { | |
6775 | Lisp_Object wn; | |
6776 | ||
6777 | XSETWINDOW (wn, w); | |
6778 | if (!NILP (w->hchild)) | |
6779 | wn = Fcons (Qnil, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6780 | window_tree (XWINDOW (w->hchild)))); |
94e16dd5 KS |
6781 | else if (!NILP (w->vchild)) |
6782 | wn = Fcons (Qt, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6783 | window_tree (XWINDOW (w->vchild)))); |
94e16dd5 KS |
6784 | |
6785 | if (NILP (result)) | |
6786 | { | |
6787 | result = tail = Fcons (wn, Qnil); | |
6788 | } | |
6789 | else | |
6790 | { | |
6791 | XSETCDR (tail, Fcons (wn, Qnil)); | |
6792 | tail = XCDR (tail); | |
6793 | } | |
6794 | ||
6795 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6796 | } | |
6797 | ||
6798 | return result; | |
6799 | } | |
6800 | ||
6801 | ||
6802 | ||
c16e1cc3 | 6803 | DEFUN ("window-tree", Fwindow_tree, Swindow_tree, |
94e16dd5 | 6804 | 0, 1, 0, |
c16e1cc3 | 6805 | doc: /* Return the window tree for frame FRAME. |
94e16dd5 KS |
6806 | |
6807 | The return value is a list of the form (ROOT MINI), where ROOT | |
c16e1cc3 | 6808 | represents the window tree of the frame's root window, and MINI |
94e16dd5 KS |
6809 | is the frame's minibuffer window. |
6810 | ||
6811 | If the root window is not split, ROOT is the root window itself. | |
6812 | Otherwise, ROOT is a list (DIR EDGES W1 W2 ...) where DIR is nil for a | |
008171a4 | 6813 | horizontal split, and t for a vertical split, EDGES gives the combined |
94e16dd5 KS |
6814 | size and position of the subwindows in the split, and the rest of the |
6815 | elements are the subwindows in the split. Each of the subwindows may | |
6816 | again be a window or a list representing a window split, and so on. | |
6817 | EDGES is a list \(LEFT TOP RIGHT BOTTOM) as returned by `window-edges'. | |
6818 | ||
6819 | If FRAME is nil or omitted, return information on the currently | |
6820 | selected frame. */) | |
6821 | (frame) | |
6822 | Lisp_Object frame; | |
6823 | { | |
94e16dd5 KS |
6824 | FRAME_PTR f; |
6825 | ||
6826 | if (NILP (frame)) | |
6827 | frame = selected_frame; | |
6828 | ||
6829 | CHECK_FRAME (frame); | |
6830 | f = XFRAME (frame); | |
6831 | ||
6832 | if (!FRAME_LIVE_P (f)) | |
6833 | return Qnil; | |
6834 | ||
c16e1cc3 | 6835 | return window_tree (XWINDOW (FRAME_ROOT_WINDOW (f))); |
94e16dd5 KS |
6836 | } |
6837 | ||
5500c422 GM |
6838 | \f |
6839 | /*********************************************************************** | |
6840 | Marginal Areas | |
6841 | ***********************************************************************/ | |
6842 | ||
6843 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6844 | 2, 3, 0, |
fdb82f93 | 6845 | doc: /* Set width of marginal areas of window WINDOW. |
6b61353c KH |
6846 | If WINDOW is nil, set margins of the currently selected window. |
6847 | Second arg LEFT-WIDTH specifies the number of character cells to | |
6848 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6849 | does the same for the right marginal area. A nil width parameter | |
6850 | means no margin. */) | |
c10ce82e JB |
6851 | (window, left_width, right_width) |
6852 | Lisp_Object window, left_width, right_width; | |
5500c422 GM |
6853 | { |
6854 | struct window *w = decode_window (window); | |
5500c422 | 6855 | |
6b61353c KH |
6856 | /* Translate negative or zero widths to nil. |
6857 | Margins that are too wide have to be checked elsewhere. */ | |
949cf20f | 6858 | |
c10ce82e | 6859 | if (!NILP (left_width)) |
6b61353c | 6860 | { |
c10ce82e JB |
6861 | CHECK_NUMBER (left_width); |
6862 | if (XINT (left_width) <= 0) | |
6863 | left_width = Qnil; | |
6b61353c | 6864 | } |
5500c422 | 6865 | |
c10ce82e | 6866 | if (!NILP (right_width)) |
6b61353c | 6867 | { |
c10ce82e JB |
6868 | CHECK_NUMBER (right_width); |
6869 | if (XINT (right_width) <= 0) | |
6870 | right_width = Qnil; | |
6b61353c | 6871 | } |
5500c422 | 6872 | |
c10ce82e JB |
6873 | if (!EQ (w->left_margin_cols, left_width) |
6874 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6875 | { |
c10ce82e JB |
6876 | w->left_margin_cols = left_width; |
6877 | w->right_margin_cols = right_width; | |
949cf20f KS |
6878 | |
6879 | adjust_window_margins (w); | |
6880 | ||
6881 | ++windows_or_buffers_changed; | |
6882 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6883 | } | |
5500c422 | 6884 | |
5500c422 GM |
6885 | return Qnil; |
6886 | } | |
6887 | ||
6888 | ||
6889 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6890 | 0, 1, 0, | |
fdb82f93 PJ |
6891 | doc: /* Get width of marginal areas of window WINDOW. |
6892 | If WINDOW is omitted or nil, use the currently selected window. | |
6893 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
6894 | If a marginal area does not exist, its width will be returned | |
6895 | as nil. */) | |
6896 | (window) | |
5500c422 GM |
6897 | Lisp_Object window; |
6898 | { | |
6899 | struct window *w = decode_window (window); | |
949cf20f KS |
6900 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
6901 | } | |
6902 | ||
6903 | ||
6904 | \f | |
6905 | /*********************************************************************** | |
6906 | Fringes | |
6907 | ***********************************************************************/ | |
6908 | ||
6909 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, | |
6910 | 2, 4, 0, | |
6b61353c KH |
6911 | doc: /* Set the fringe widths of window WINDOW. |
6912 | If WINDOW is nil, set the fringe widths of the currently selected | |
6913 | window. | |
6914 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for | |
6915 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6916 | fringe width. If a fringe width arg is nil, that means to use the | |
6917 | frame's default fringe width. Default fringe widths can be set with | |
6918 | the command `set-fringe-style'. | |
6919 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6920 | outside of the display margins. By default, fringes are drawn between | |
6921 | display marginal areas and the text area. */) | |
c10ce82e JB |
6922 | (window, left_width, right_width, outside_margins) |
6923 | Lisp_Object window, left_width, right_width, outside_margins; | |
949cf20f KS |
6924 | { |
6925 | struct window *w = decode_window (window); | |
6926 | ||
c10ce82e JB |
6927 | if (!NILP (left_width)) |
6928 | CHECK_NATNUM (left_width); | |
6929 | if (!NILP (right_width)) | |
6930 | CHECK_NATNUM (right_width); | |
5a857365 | 6931 | |
017e297e | 6932 | /* Do nothing on a tty. */ |
d46c6df5 NR |
6933 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
6934 | && (!EQ (w->left_fringe_width, left_width) | |
6935 | || !EQ (w->right_fringe_width, right_width) | |
6936 | || !EQ (w->fringes_outside_margins, outside_margins))) | |
949cf20f | 6937 | { |
c10ce82e JB |
6938 | w->left_fringe_width = left_width; |
6939 | w->right_fringe_width = right_width; | |
949cf20f KS |
6940 | w->fringes_outside_margins = outside_margins; |
6941 | ||
6942 | adjust_window_margins (w); | |
6943 | ||
6944 | clear_glyph_matrix (w->current_matrix); | |
6945 | w->window_end_valid = Qnil; | |
6946 | ||
6947 | ++windows_or_buffers_changed; | |
6948 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6949 | } | |
6950 | ||
6951 | return Qnil; | |
6952 | } | |
6953 | ||
6954 | ||
6955 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6956 | 0, 1, 0, | |
6957 | doc: /* Get width of fringes of window WINDOW. | |
6958 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c | 6959 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
949cf20f KS |
6960 | (window) |
6961 | Lisp_Object window; | |
6962 | { | |
6963 | struct window *w = decode_window (window); | |
d46c6df5 | 6964 | |
949cf20f KS |
6965 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6966 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
d46c6df5 NR |
6967 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
6968 | ? Qt : Qnil), Qnil))); | |
949cf20f KS |
6969 | } |
6970 | ||
6971 | ||
6972 | \f | |
6973 | /*********************************************************************** | |
6974 | Scroll bars | |
6975 | ***********************************************************************/ | |
6976 | ||
6977 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, Sset_window_scroll_bars, | |
6978 | 2, 4, 0, | |
6979 | doc: /* Set width and type of scroll bars of window WINDOW. | |
6980 | If window is nil, set scroll bars of the currently selected window. | |
6981 | Second parameter WIDTH specifies the pixel width for the scroll bar; | |
6982 | this is automatically adjusted to a multiple of the frame column width. | |
6983 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6984 | bar: left, right, or nil. | |
6b61353c | 6985 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6986 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6987 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
79fd290e JB |
6988 | (window, width, vertical_type, horizontal_type) |
6989 | Lisp_Object window, width, vertical_type, horizontal_type; | |
949cf20f KS |
6990 | { |
6991 | struct window *w = decode_window (window); | |
6992 | ||
6993 | if (!NILP (width)) | |
0f8fe9a2 SM |
6994 | { |
6995 | CHECK_NATNUM (width); | |
949cf20f | 6996 | |
0f8fe9a2 SM |
6997 | if (XINT (width) == 0) |
6998 | vertical_type = Qnil; | |
6999 | } | |
949cf20f | 7000 | |
413a79ad | 7001 | if (!(NILP (vertical_type) |
0cc1039f | 7002 | || EQ (vertical_type, Qleft) |
6b61353c KH |
7003 | || EQ (vertical_type, Qright) |
7004 | || EQ (vertical_type, Qt))) | |
7005 | error ("Invalid type of vertical scroll bar"); | |
7006 | ||
949cf20f KS |
7007 | if (!EQ (w->scroll_bar_width, width) |
7008 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
7009 | { | |
7010 | w->scroll_bar_width = width; | |
7011 | w->vertical_scroll_bar_type = vertical_type; | |
7012 | ||
7013 | adjust_window_margins (w); | |
7014 | ||
7015 | clear_glyph_matrix (w->current_matrix); | |
7016 | w->window_end_valid = Qnil; | |
7017 | ||
7018 | ++windows_or_buffers_changed; | |
7019 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
7020 | } | |
7021 | ||
7022 | return Qnil; | |
7023 | } | |
7024 | ||
7025 | ||
7026 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
7027 | 0, 1, 0, | |
7028 | doc: /* Get width and type of scroll bars of window WINDOW. | |
7029 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c KH |
7030 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
7031 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
7032 | value. */) | |
949cf20f KS |
7033 | (window) |
7034 | Lisp_Object window; | |
7035 | { | |
7036 | struct window *w = decode_window (window); | |
7037 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
7038 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
7039 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
7040 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
7041 | Fcons (w->vertical_scroll_bar_type, | |
7042 | Fcons (Qnil, Qnil)))); | |
5500c422 GM |
7043 | } |
7044 | ||
7045 | ||
7ab12479 | 7046 | \f |
5500c422 GM |
7047 | /*********************************************************************** |
7048 | Smooth scrolling | |
7049 | ***********************************************************************/ | |
7050 | ||
0cc1039f | 7051 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 PJ |
7052 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
7053 | Use the selected window if WINDOW is nil or omitted. | |
0cc1039f | 7054 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 7055 | optional second arg PIXELS-P means value is measured in pixels. */) |
0cc1039f KS |
7056 | (window, pixels_p) |
7057 | Lisp_Object window, pixels_p; | |
5500c422 | 7058 | { |
47004952 | 7059 | Lisp_Object result; |
5500c422 GM |
7060 | struct frame *f; |
7061 | struct window *w; | |
177c0ea7 | 7062 | |
5500c422 GM |
7063 | if (NILP (window)) |
7064 | window = selected_window; | |
47004952 | 7065 | else |
b7826503 | 7066 | CHECK_WINDOW (window); |
5500c422 GM |
7067 | w = XWINDOW (window); |
7068 | f = XFRAME (w->frame); | |
177c0ea7 | 7069 | |
5500c422 | 7070 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
7071 | result = (NILP (pixels_p) |
7072 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
7073 | : make_number (-w->vscroll)); | |
5500c422 | 7074 | else |
47004952 GM |
7075 | result = make_number (0); |
7076 | return result; | |
5500c422 GM |
7077 | } |
7078 | ||
7079 | ||
7080 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 7081 | 2, 3, 0, |
fdb82f93 | 7082 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
7083 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
7084 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 7085 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
7086 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
7087 | corresponds to an integral number of pixels. The return value is the | |
7088 | result of this rounding. | |
7089 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
0cc1039f KS |
7090 | (window, vscroll, pixels_p) |
7091 | Lisp_Object window, vscroll, pixels_p; | |
5500c422 GM |
7092 | { |
7093 | struct window *w; | |
7094 | struct frame *f; | |
177c0ea7 | 7095 | |
5500c422 GM |
7096 | if (NILP (window)) |
7097 | window = selected_window; | |
47004952 | 7098 | else |
b7826503 PJ |
7099 | CHECK_WINDOW (window); |
7100 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 7101 | |
5500c422 GM |
7102 | w = XWINDOW (window); |
7103 | f = XFRAME (w->frame); | |
7104 | ||
7105 | if (FRAME_WINDOW_P (f)) | |
7106 | { | |
7107 | int old_dy = w->vscroll; | |
177c0ea7 | 7108 | |
0cc1039f KS |
7109 | w->vscroll = - (NILP (pixels_p) |
7110 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
7111 | : XFLOATINT (vscroll)); | |
47004952 | 7112 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 7113 | |
e56263e5 KS |
7114 | if (w->vscroll != old_dy) |
7115 | { | |
7116 | /* Adjust glyph matrix of the frame if the virtual display | |
7117 | area becomes larger than before. */ | |
7118 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
7119 | adjust_glyphs (f); | |
177c0ea7 | 7120 | |
e56263e5 KS |
7121 | /* Prevent redisplay shortcuts. */ |
7122 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
7123 | } | |
5500c422 | 7124 | } |
177c0ea7 | 7125 | |
0cc1039f | 7126 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 7127 | } |
177c0ea7 | 7128 | |
7bbb5782 GM |
7129 | \f |
7130 | /* Call FN for all leaf windows on frame F. FN is called with the | |
7131 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 7132 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 GM |
7133 | |
7134 | void | |
f95464e4 | 7135 | foreach_window (f, fn, user_data) |
7bbb5782 | 7136 | struct frame *f; |
f95464e4 GM |
7137 | int (* fn) P_ ((struct window *, void *)); |
7138 | void *user_data; | |
7bbb5782 | 7139 | { |
76fb556f YM |
7140 | /* Fdelete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
7141 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) | |
7142 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
7143 | } |
7144 | ||
7145 | ||
7146 | /* Helper function for foreach_window. Call FN for all leaf windows | |
7147 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 7148 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 7149 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 7150 | |
67492200 | 7151 | static int |
f95464e4 | 7152 | foreach_window_1 (w, fn, user_data) |
7bbb5782 | 7153 | struct window *w; |
f95464e4 GM |
7154 | int (* fn) P_ ((struct window *, void *)); |
7155 | void *user_data; | |
7bbb5782 | 7156 | { |
67492200 | 7157 | int cont; |
177c0ea7 | 7158 | |
67492200 | 7159 | for (cont = 1; w && cont;) |
7bbb5782 GM |
7160 | { |
7161 | if (!NILP (w->hchild)) | |
f95464e4 | 7162 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 7163 | else if (!NILP (w->vchild)) |
f95464e4 | 7164 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
177c0ea7 | 7165 | else |
0f532a9a | 7166 | cont = fn (w, user_data); |
177c0ea7 | 7167 | |
7bbb5782 GM |
7168 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
7169 | } | |
67492200 GM |
7170 | |
7171 | return cont; | |
7bbb5782 GM |
7172 | } |
7173 | ||
7174 | ||
6d194a45 | 7175 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 7176 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
7177 | the window start. */ |
7178 | ||
67492200 | 7179 | static int |
7bbb5782 GM |
7180 | freeze_window_start (w, freeze_p) |
7181 | struct window *w; | |
f95464e4 | 7182 | void *freeze_p; |
7bbb5782 | 7183 | { |
08c1d235 SM |
7184 | if (MINI_WINDOW_P (w) |
7185 | || (WINDOWP (selected_window) /* Can be nil in corner cases. */ | |
7186 | && (w == XWINDOW (selected_window) | |
7187 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
7188 | && ! NILP (Vminibuf_scroll_window) | |
7189 | && w == XWINDOW (Vminibuf_scroll_window))))) | |
f95464e4 | 7190 | freeze_p = NULL; |
177c0ea7 | 7191 | |
f95464e4 | 7192 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 7193 | return 1; |
7bbb5782 GM |
7194 | } |
7195 | ||
7196 | ||
7197 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
7198 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
7199 | means freeze the window start. */ | |
7200 | ||
7201 | void | |
7202 | freeze_window_starts (f, freeze_p) | |
7203 | struct frame *f; | |
7204 | int freeze_p; | |
7205 | { | |
cbccabec | 7206 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 7207 | } |
5500c422 GM |
7208 | |
7209 | \f | |
7210 | /*********************************************************************** | |
7211 | Initialization | |
7212 | ***********************************************************************/ | |
7213 | ||
cbff28e8 RS |
7214 | /* Return 1 if window configurations C1 and C2 |
7215 | describe the same state of affairs. This is used by Fequal. */ | |
7216 | ||
7217 | int | |
2f8274be | 7218 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 7219 | Lisp_Object c1, c2; |
2f8274be | 7220 | int ignore_positions; |
cbff28e8 RS |
7221 | { |
7222 | register struct save_window_data *d1, *d2; | |
7223 | struct Lisp_Vector *sw1, *sw2; | |
7224 | int i; | |
7225 | ||
663fbbba KS |
7226 | CHECK_WINDOW_CONFIGURATION (c1); |
7227 | CHECK_WINDOW_CONFIGURATION (c2); | |
177c0ea7 | 7228 | |
cbff28e8 RS |
7229 | d1 = (struct save_window_data *) XVECTOR (c1); |
7230 | d2 = (struct save_window_data *) XVECTOR (c2); | |
7231 | sw1 = XVECTOR (d1->saved_windows); | |
7232 | sw2 = XVECTOR (d2->saved_windows); | |
7233 | ||
b05b4e27 | 7234 | if (d1->frame_cols != d2->frame_cols) |
cbff28e8 | 7235 | return 0; |
b05b4e27 | 7236 | if (d1->frame_lines != d2->frame_lines) |
cbff28e8 | 7237 | return 0; |
b05b4e27 | 7238 | if (d1->frame_menu_bar_lines != d2->frame_menu_bar_lines) |
cbff28e8 RS |
7239 | return 0; |
7240 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
7241 | return 0; | |
7242 | /* Don't compare the current_window field directly. | |
7243 | Instead see w1_is_current and w2_is_current, below. */ | |
7244 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
7245 | return 0; | |
2f8274be | 7246 | if (! ignore_positions) |
3f49fddc KS |
7247 | { |
7248 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
7249 | return 0; | |
7250 | if (! EQ (d1->minibuf_selected_window, d2->minibuf_selected_window)) | |
7251 | return 0; | |
7252 | } | |
cbff28e8 RS |
7253 | /* Don't compare the root_window field. |
7254 | We don't require the two configurations | |
7255 | to use the same window object, | |
7256 | and the two root windows must be equivalent | |
7257 | if everything else compares equal. */ | |
7258 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
7259 | return 0; | |
cbff28e8 RS |
7260 | |
7261 | /* Verify that the two confis have the same number of windows. */ | |
7262 | if (sw1->size != sw2->size) | |
7263 | return 0; | |
7264 | ||
7265 | for (i = 0; i < sw1->size; i++) | |
7266 | { | |
7267 | struct saved_window *p1, *p2; | |
7268 | int w1_is_current, w2_is_current; | |
7269 | ||
7270 | p1 = SAVED_WINDOW_N (sw1, i); | |
7271 | p2 = SAVED_WINDOW_N (sw2, i); | |
7272 | ||
7273 | /* Verify that the current windows in the two | |
7274 | configurations correspond to each other. */ | |
7275 | w1_is_current = EQ (d1->current_window, p1->window); | |
7276 | w2_is_current = EQ (d2->current_window, p2->window); | |
7277 | ||
7278 | if (w1_is_current != w2_is_current) | |
7279 | return 0; | |
7280 | ||
7281 | /* Verify that the corresponding windows do match. */ | |
7282 | if (! EQ (p1->buffer, p2->buffer)) | |
7283 | return 0; | |
949cf20f | 7284 | if (! EQ (p1->left_col, p2->left_col)) |
cbff28e8 | 7285 | return 0; |
949cf20f | 7286 | if (! EQ (p1->top_line, p2->top_line)) |
cbff28e8 | 7287 | return 0; |
949cf20f | 7288 | if (! EQ (p1->total_cols, p2->total_cols)) |
cbff28e8 | 7289 | return 0; |
949cf20f | 7290 | if (! EQ (p1->total_lines, p2->total_lines)) |
cbff28e8 | 7291 | return 0; |
cbff28e8 RS |
7292 | if (! EQ (p1->display_table, p2->display_table)) |
7293 | return 0; | |
7294 | if (! EQ (p1->parent, p2->parent)) | |
7295 | return 0; | |
7296 | if (! EQ (p1->prev, p2->prev)) | |
7297 | return 0; | |
2f8274be RS |
7298 | if (! ignore_positions) |
7299 | { | |
7300 | if (! EQ (p1->hscroll, p2->hscroll)) | |
7301 | return 0; | |
ea68264b GM |
7302 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
7303 | return 0; | |
2f8274be RS |
7304 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
7305 | return 0; | |
7306 | if (NILP (Fequal (p1->start, p2->start))) | |
7307 | return 0; | |
7308 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
7309 | return 0; | |
7310 | if (NILP (Fequal (p1->mark, p2->mark))) | |
7311 | return 0; | |
7312 | } | |
949cf20f KS |
7313 | if (! EQ (p1->left_margin_cols, p2->left_margin_cols)) |
7314 | return 0; | |
7315 | if (! EQ (p1->right_margin_cols, p2->right_margin_cols)) | |
7316 | return 0; | |
7317 | if (! EQ (p1->left_fringe_width, p2->left_fringe_width)) | |
7318 | return 0; | |
7319 | if (! EQ (p1->right_fringe_width, p2->right_fringe_width)) | |
7320 | return 0; | |
7321 | if (! EQ (p1->fringes_outside_margins, p2->fringes_outside_margins)) | |
7322 | return 0; | |
7323 | if (! EQ (p1->scroll_bar_width, p2->scroll_bar_width)) | |
7324 | return 0; | |
7325 | if (! EQ (p1->vertical_scroll_bar_type, p2->vertical_scroll_bar_type)) | |
7326 | return 0; | |
cbff28e8 RS |
7327 | } |
7328 | ||
7329 | return 1; | |
7330 | } | |
2f8274be RS |
7331 | |
7332 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
7333 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
7334 | doc: /* Compare two window configurations as regards the structure of windows. |
7335 | This function ignores details such as the values of point and mark | |
7336 | and scrolling positions. */) | |
7337 | (x, y) | |
2f8274be RS |
7338 | Lisp_Object x, y; |
7339 | { | |
7340 | if (compare_window_configurations (x, y, 1)) | |
7341 | return Qt; | |
7342 | return Qnil; | |
7343 | } | |
cbff28e8 | 7344 | \f |
dfcf069d | 7345 | void |
7ab12479 JB |
7346 | init_window_once () |
7347 | { | |
3224dac1 | 7348 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
7349 | XSETFRAME (selected_frame, f); |
7350 | Vterminal_frame = selected_frame; | |
7351 | minibuf_window = f->minibuffer_window; | |
7352 | selected_window = f->selected_window; | |
7353 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
7354 | |
7355 | window_initialized = 1; | |
7ab12479 JB |
7356 | } |
7357 | ||
67492200 GM |
7358 | void |
7359 | init_window () | |
7360 | { | |
7361 | Vwindow_list = Qnil; | |
7362 | } | |
7363 | ||
dfcf069d | 7364 | void |
7ab12479 JB |
7365 | syms_of_window () |
7366 | { | |
c525d842 CY |
7367 | Qscroll_up = intern ("scroll-up"); |
7368 | staticpro (&Qscroll_up); | |
7369 | ||
7370 | Qscroll_down = intern ("scroll-down"); | |
7371 | staticpro (&Qscroll_down); | |
7372 | ||
8a37516b GM |
7373 | Qwindow_size_fixed = intern ("window-size-fixed"); |
7374 | staticpro (&Qwindow_size_fixed); | |
c0e7ccd3 | 7375 | Fset (Qwindow_size_fixed, Qnil); |
177c0ea7 | 7376 | |
543f5fb1 RS |
7377 | staticpro (&Qwindow_configuration_change_hook); |
7378 | Qwindow_configuration_change_hook | |
7379 | = intern ("window-configuration-change-hook"); | |
7380 | ||
7ab12479 JB |
7381 | Qwindowp = intern ("windowp"); |
7382 | staticpro (&Qwindowp); | |
7383 | ||
3f8ab7bd RS |
7384 | Qwindow_configuration_p = intern ("window-configuration-p"); |
7385 | staticpro (&Qwindow_configuration_p); | |
7386 | ||
806b4d9b JB |
7387 | Qwindow_live_p = intern ("window-live-p"); |
7388 | staticpro (&Qwindow_live_p); | |
605be8af | 7389 | |
2cccc823 | 7390 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
7391 | staticpro (&Qtemp_buffer_show_hook); |
7392 | ||
67492200 | 7393 | staticpro (&Vwindow_list); |
8bfb170b KS |
7394 | |
7395 | minibuf_selected_window = Qnil; | |
3dbab091 | 7396 | staticpro (&minibuf_selected_window); |
67492200 | 7397 | |
66fe93d1 | 7398 | window_scroll_pixel_based_preserve_y = -1; |
66d43aea | 7399 | |
7ab12479 | 7400 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
fdb82f93 PJ |
7401 | doc: /* Non-nil means call as function to display a help buffer. |
7402 | The function is called with one argument, the buffer to be displayed. | |
7403 | Used by `with-output-to-temp-buffer'. | |
7404 | If this function is used, then it must do the entire job of showing | |
7405 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
7406 | Vtemp_buffer_show_function = Qnil; |
7407 | ||
7408 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
fdb82f93 PJ |
7409 | doc: /* If non-nil, function to call to handle `display-buffer'. |
7410 | It will receive two args, the buffer and a flag which if non-nil means | |
c2755926 LT |
7411 | that the currently selected window is not acceptable. |
7412 | It should choose or create a window, display the specified buffer in it, | |
7413 | and return the window. | |
fdb82f93 PJ |
7414 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window' |
7415 | work using this function. */); | |
7ab12479 JB |
7416 | Vdisplay_buffer_function = Qnil; |
7417 | ||
6529ed87 | 7418 | DEFVAR_LISP ("even-window-heights", &Veven_window_heights, |
fdb82f93 PJ |
7419 | doc: /* *If non-nil, `display-buffer' should even the window heights. |
7420 | If nil, `display-buffer' will leave the window configuration alone. */); | |
6529ed87 GM |
7421 | Veven_window_heights = Qt; |
7422 | ||
7ab12479 | 7423 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
fdb82f93 | 7424 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
7425 | Vminibuf_scroll_window = Qnil; |
7426 | ||
cc91894c | 7427 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows, |
26124d5e | 7428 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
7429 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
7430 | is displayed in the `mode-line' face. */); | |
7431 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 7432 | |
7ab12479 | 7433 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, |
fdb82f93 | 7434 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
7435 | Vother_window_scroll_buffer = Qnil; |
7436 | ||
44fa5b1e | 7437 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
fdb82f93 | 7438 | doc: /* *Non-nil means `display-buffer' should make a separate frame. */); |
44fa5b1e | 7439 | pop_up_frames = 0; |
7ab12479 | 7440 | |
e56263e5 KS |
7441 | DEFVAR_BOOL ("auto-window-vscroll", &auto_window_vscroll_p, |
7442 | doc: /* *Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); | |
7443 | auto_window_vscroll_p = 1; | |
7444 | ||
9c3da604 | 7445 | DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames, |
fdb82f93 PJ |
7446 | doc: /* *Non-nil means `display-buffer' should reuse frames. |
7447 | If the buffer in question is already displayed in a frame, raise that frame. */); | |
9c3da604 GM |
7448 | display_buffer_reuse_frames = 0; |
7449 | ||
44fa5b1e | 7450 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
fdb82f93 PJ |
7451 | doc: /* Function to call to handle automatic new frame creation. |
7452 | It is called with no arguments and should return a newly created frame. | |
7453 | ||
7454 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))' | |
7455 | where `pop-up-frame-alist' would hold the default frame parameters. */); | |
44fa5b1e | 7456 | Vpop_up_frame_function = Qnil; |
7ab12479 | 7457 | |
a90712c2 | 7458 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
fdb82f93 | 7459 | doc: /* *List of buffer names that should have their own special frames. |
c019856e RS |
7460 | Displaying a buffer with `display-buffer' or `pop-to-buffer', |
7461 | if its name is in this list, makes a special frame for it | |
fdb82f93 PJ |
7462 | using `special-display-function'. See also `special-display-regexps'. |
7463 | ||
7464 | An element of the list can be a list instead of just a string. | |
7465 | There are two ways to use a list as an element: | |
7466 | (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...) | |
3cb7143c RS |
7467 | In the first case, the FRAME-PARAMETERS are pairs of the form |
7468 | \(PARAMETER . VALUE); these parameter values are used to create the frame. | |
7469 | In the second case, FUNCTION is called with BUFFER as the first argument, | |
7470 | followed by the OTHER-ARGS--it can display BUFFER in any way it likes. | |
fdb82f93 PJ |
7471 | All this is done by the function found in `special-display-function'. |
7472 | ||
6b61353c KH |
7473 | If the specified frame parameters include (same-buffer . t), the |
7474 | buffer is displayed in the currently selected window. Otherwise, if | |
7475 | they include (same-frame . t), the buffer is displayed in a new window | |
7476 | in the currently selected frame. | |
7477 | ||
fdb82f93 PJ |
7478 | If this variable appears \"not to work\", because you add a name to it |
7479 | but that buffer still appears in the selected window, look at the | |
7480 | values of `same-window-buffer-names' and `same-window-regexps'. | |
7481 | Those variables take precedence over this one. */); | |
a90712c2 RS |
7482 | Vspecial_display_buffer_names = Qnil; |
7483 | ||
7484 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
fdb82f93 | 7485 | doc: /* *List of regexps saying which buffers should have their own special frames. |
c019856e RS |
7486 | When displaying a buffer with `display-buffer' or `pop-to-buffer', |
7487 | if any regexp in this list matches the buffer name, it makes a | |
7488 | special frame for the buffer by calling `special-display-function'. | |
fdb82f93 PJ |
7489 | |
7490 | An element of the list can be a list instead of just a string. | |
7491 | There are two ways to use a list as an element: | |
7492 | (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...) | |
3cb7143c RS |
7493 | In the first case, the FRAME-PARAMETERS are pairs of the form |
7494 | \(PARAMETER . VALUE); these parameter values are used to create the frame. | |
7495 | In the second case, FUNCTION is called with BUFFER as the first argument, | |
7496 | followed by the OTHER-ARGS--it can display the buffer in any way it likes. | |
fdb82f93 PJ |
7497 | All this is done by the function found in `special-display-function'. |
7498 | ||
6b61353c KH |
7499 | If the specified frame parameters include (same-buffer . t), the |
7500 | buffer is displayed in the currently selected window. Otherwise, if | |
7501 | they include (same-frame . t), the buffer is displayed in a new window | |
7502 | in the currently selected frame. | |
7503 | ||
fdb82f93 PJ |
7504 | If this variable appears \"not to work\", because you add a regexp to it |
7505 | but the matching buffers still appear in the selected window, look at the | |
7506 | values of `same-window-buffer-names' and `same-window-regexps'. | |
7507 | Those variables take precedence over this one. */); | |
a90712c2 RS |
7508 | Vspecial_display_regexps = Qnil; |
7509 | ||
7510 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
fdb82f93 PJ |
7511 | doc: /* Function to call to make a new frame for a special buffer. |
7512 | It is called with two arguments, the buffer and optional buffer specific | |
7513 | data, and should return a window displaying that buffer. | |
a5731348 SM |
7514 | The default value normally makes a separate frame for the buffer, |
7515 | using `special-display-frame-alist' to specify the frame parameters. | |
7516 | But if the buffer specific data includes (same-buffer . t) then the | |
7517 | buffer is displayed in the current selected window. | |
7518 | Otherwise if it includes (same-frame . t) then the buffer is displayed in | |
7519 | a new window in the currently selected frame. | |
7520 | ||
7521 | A buffer is special if it is listed in `special-display-buffer-names' | |
fdb82f93 | 7522 | or matches a regexp in `special-display-regexps'. */); |
a90712c2 RS |
7523 | Vspecial_display_function = Qnil; |
7524 | ||
855d8627 | 7525 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
fdb82f93 PJ |
7526 | doc: /* *List of buffer names that should appear in the selected window. |
7527 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer' | |
7528 | switches to it in the selected window, rather than making it appear | |
7529 | in some other window. | |
7530 | ||
7531 | An element of the list can be a cons cell instead of just a string. | |
7532 | Then the car must be a string, which specifies the buffer name. | |
7533 | This is for compatibility with `special-display-buffer-names'; | |
7534 | the cdr of the cons cell is ignored. | |
7535 | ||
7536 | See also `same-window-regexps'. */); | |
855d8627 RS |
7537 | Vsame_window_buffer_names = Qnil; |
7538 | ||
7539 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
fdb82f93 PJ |
7540 | doc: /* *List of regexps saying which buffers should appear in the selected window. |
7541 | If a buffer name matches one of these regexps, then displaying it | |
7542 | using `display-buffer' or `pop-to-buffer' switches to it | |
7543 | in the selected window, rather than making it appear in some other window. | |
7544 | ||
7545 | An element of the list can be a cons cell instead of just a string. | |
7546 | Then the car must be a string, which specifies the buffer name. | |
7547 | This is for compatibility with `special-display-buffer-names'; | |
7548 | the cdr of the cons cell is ignored. | |
7549 | ||
7550 | See also `same-window-buffer-names'. */); | |
855d8627 RS |
7551 | Vsame_window_regexps = Qnil; |
7552 | ||
7ab12479 | 7553 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
fdb82f93 | 7554 | doc: /* *Non-nil means display-buffer should make new windows. */); |
7ab12479 JB |
7555 | pop_up_windows = 1; |
7556 | ||
7557 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
fdb82f93 | 7558 | doc: /* *Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
7559 | next_screen_context_lines = 2; |
7560 | ||
7561 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
bdbae5b8 EZ |
7562 | doc: /* *A window must be at least this tall to be eligible for splitting |
7563 | by `display-buffer'. The value is in line units. | |
fdb82f93 | 7564 | If there is only one window, it is split regardless of this value. */); |
7ab12479 JB |
7565 | split_height_threshold = 500; |
7566 | ||
90ab5c62 SM |
7567 | DEFVAR_LISP ("split-window-preferred-function", |
7568 | &Vsplit_window_preferred_function, | |
7569 | doc: /* Function to use to split a window. | |
7570 | This is used by `display-buffer' to allow the user to choose whether | |
7571 | to split windows horizontally or vertically or some mix of the two. | |
7ae6d1d1 JL |
7572 | When this variable is nil, `display-buffer' splits windows vertically. |
7573 | Otherwise, `display-buffer' calls this function to split a window. | |
90ab5c62 | 7574 | It is called with a window as single argument and should split it in two |
7ae6d1d1 JL |
7575 | and return the new window, or return an appropriate existing window |
7576 | if splitting is not eligible. */); | |
7577 | Vsplit_window_preferred_function = Qnil; | |
90ab5c62 | 7578 | |
7ab12479 | 7579 | DEFVAR_INT ("window-min-height", &window_min_height, |
047aaeb9 MR |
7580 | doc: /* Allow deleting windows less than this tall. |
7581 | The value is measured in line units. If a window wants a modeline it | |
7582 | is counted as one line. | |
7583 | ||
7584 | Emacs honors settings of this variable when enlarging or shrinking | |
7585 | windows vertically. A value less than 1 is invalid. */); | |
7ab12479 JB |
7586 | window_min_height = 4; |
7587 | ||
7588 | DEFVAR_INT ("window-min-width", &window_min_width, | |
047aaeb9 MR |
7589 | doc: /* Allow deleting windows less than this wide. |
7590 | The value is measured in characters and includes any fringes or | |
7591 | the scrollbar. | |
7592 | ||
7593 | Emacs honors settings of this variable when enlarging or shrinking | |
7594 | windows horizontally. A value less than 2 is invalid. */); | |
7ab12479 JB |
7595 | window_min_width = 10; |
7596 | ||
5500c422 GM |
7597 | DEFVAR_LISP ("scroll-preserve-screen-position", |
7598 | &Vscroll_preserve_screen_position, | |
bdf4ec93 RS |
7599 | doc: /* *Controls if scroll commands move point to keep its screen line unchanged. |
7600 | A value of nil means point does not keep its screen position except | |
7601 | at the scroll margin or window boundary respectively. | |
7602 | A value of t means point keeps its screen position if the scroll | |
7603 | command moved it vertically out of the window, e.g. when scrolling | |
7604 | by full screens. | |
7605 | Any other value means point always keeps its screen position. */); | |
5500c422 | 7606 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 7607 | |
543f5fb1 RS |
7608 | DEFVAR_LISP ("window-configuration-change-hook", |
7609 | &Vwindow_configuration_change_hook, | |
fdb82f93 | 7610 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
7611 | The buffer-local part is run once per window, with the relevant window |
7612 | selected; while the global part is run only once for the modified frame, | |
7613 | with the relevant frame selected. */); | |
543f5fb1 RS |
7614 | Vwindow_configuration_change_hook = Qnil; |
7615 | ||
7ab12479 JB |
7616 | defsubr (&Sselected_window); |
7617 | defsubr (&Sminibuffer_window); | |
7618 | defsubr (&Swindow_minibuffer_p); | |
7619 | defsubr (&Swindowp); | |
806b4d9b | 7620 | defsubr (&Swindow_live_p); |
7ab12479 | 7621 | defsubr (&Spos_visible_in_window_p); |
536833ab | 7622 | defsubr (&Swindow_line_height); |
7ab12479 JB |
7623 | defsubr (&Swindow_buffer); |
7624 | defsubr (&Swindow_height); | |
7625 | defsubr (&Swindow_width); | |
35ea56c9 | 7626 | defsubr (&Swindow_full_width_p); |
7ab12479 JB |
7627 | defsubr (&Swindow_hscroll); |
7628 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
7629 | defsubr (&Swindow_redisplay_end_trigger); |
7630 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 7631 | defsubr (&Swindow_edges); |
c99a9eb3 RS |
7632 | defsubr (&Swindow_pixel_edges); |
7633 | defsubr (&Swindow_inside_edges); | |
7634 | defsubr (&Swindow_inside_pixel_edges); | |
d5783c40 JB |
7635 | defsubr (&Scoordinates_in_window_p); |
7636 | defsubr (&Swindow_at); | |
7ab12479 JB |
7637 | defsubr (&Swindow_point); |
7638 | defsubr (&Swindow_start); | |
7639 | defsubr (&Swindow_end); | |
7640 | defsubr (&Sset_window_point); | |
7641 | defsubr (&Sset_window_start); | |
7642 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 7643 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
7644 | defsubr (&Swindow_display_table); |
7645 | defsubr (&Sset_window_display_table); | |
7646 | defsubr (&Snext_window); | |
7647 | defsubr (&Sprevious_window); | |
7648 | defsubr (&Sother_window); | |
7649 | defsubr (&Sget_lru_window); | |
7650 | defsubr (&Sget_largest_window); | |
7651 | defsubr (&Sget_buffer_window); | |
7652 | defsubr (&Sdelete_other_windows); | |
7653 | defsubr (&Sdelete_windows_on); | |
7654 | defsubr (&Sreplace_buffer_in_windows); | |
7655 | defsubr (&Sdelete_window); | |
7656 | defsubr (&Sset_window_buffer); | |
7657 | defsubr (&Sselect_window); | |
4628f7a4 EN |
7658 | defsubr (&Sspecial_display_p); |
7659 | defsubr (&Ssame_window_p); | |
7ab12479 | 7660 | defsubr (&Sdisplay_buffer); |
6b61353c | 7661 | defsubr (&Sforce_window_update); |
7ab12479 JB |
7662 | defsubr (&Ssplit_window); |
7663 | defsubr (&Senlarge_window); | |
7664 | defsubr (&Sshrink_window); | |
0d384044 | 7665 | defsubr (&Sadjust_window_trailing_edge); |
7ab12479 JB |
7666 | defsubr (&Sscroll_up); |
7667 | defsubr (&Sscroll_down); | |
7668 | defsubr (&Sscroll_left); | |
7669 | defsubr (&Sscroll_right); | |
ccd0664b | 7670 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 7671 | defsubr (&Sscroll_other_window); |
fa832261 | 7672 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 7673 | defsubr (&Srecenter); |
81fe0836 | 7674 | defsubr (&Swindow_text_height); |
7ab12479 JB |
7675 | defsubr (&Smove_to_window_line); |
7676 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 7677 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
7678 | defsubr (&Sset_window_configuration); |
7679 | defsubr (&Scurrent_window_configuration); | |
7680 | defsubr (&Ssave_window_excursion); | |
c16e1cc3 | 7681 | defsubr (&Swindow_tree); |
5500c422 GM |
7682 | defsubr (&Sset_window_margins); |
7683 | defsubr (&Swindow_margins); | |
949cf20f KS |
7684 | defsubr (&Sset_window_fringes); |
7685 | defsubr (&Swindow_fringes); | |
7686 | defsubr (&Sset_window_scroll_bars); | |
7687 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
7688 | defsubr (&Swindow_vscroll); |
7689 | defsubr (&Sset_window_vscroll); | |
2f8274be | 7690 | defsubr (&Scompare_window_configurations); |
67492200 | 7691 | defsubr (&Swindow_list); |
7ab12479 JB |
7692 | } |
7693 | ||
dfcf069d | 7694 | void |
7ab12479 JB |
7695 | keys_of_window () |
7696 | { | |
7697 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
7698 | initial_define_key (control_x_map, '2', "split-window"); | |
7699 | initial_define_key (control_x_map, '0', "delete-window"); | |
7700 | initial_define_key (control_x_map, 'o', "other-window"); | |
7701 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
7702 | initial_define_key (control_x_map, '<', "scroll-left"); | |
7703 | initial_define_key (control_x_map, '>', "scroll-right"); | |
7704 | ||
7705 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
7706 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
7707 | initial_define_key (meta_map, 'v', "scroll-down"); | |
7708 | ||
7709 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
7710 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
7711 | } | |
6b61353c KH |
7712 | |
7713 | /* arch-tag: 90a9c576-0590-48f1-a5f1-6c96a0452d9f | |
2c2cd782 | 7714 | (do not change this comment) */ |