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> |
7ab12479 JB |
25 | #include "lisp.h" |
26 | #include "buffer.h" | |
3e4731a3 | 27 | #include "keyboard.h" |
e35f6ff7 | 28 | #include "keymap.h" |
44fa5b1e | 29 | #include "frame.h" |
7ab12479 JB |
30 | #include "window.h" |
31 | #include "commands.h" | |
32 | #include "indent.h" | |
33 | #include "termchar.h" | |
34 | #include "disptab.h" | |
dfcf069d | 35 | #include "dispextern.h" |
5500c422 GM |
36 | #include "blockinput.h" |
37 | #include "intervals.h" | |
38 | ||
6d55d620 | 39 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 40 | #include "xterm.h" |
5500c422 | 41 | #endif /* HAVE_X_WINDOWS */ |
8f23f280 AI |
42 | #ifdef WINDOWSNT |
43 | #include "w32term.h" | |
44 | #endif | |
1e3c8885 EZ |
45 | #ifdef MSDOS |
46 | #include "msdos.h" | |
47 | #endif | |
e0f712ba | 48 | #ifdef MAC_OS |
1a578e9b AC |
49 | #include "macterm.h" |
50 | #endif | |
5500c422 | 51 | |
5500c422 | 52 | |
3f8ab7bd | 53 | Lisp_Object Qwindowp, Qwindow_live_p, Qwindow_configuration_p; |
c525d842 | 54 | Lisp_Object Qscroll_up, Qscroll_down; |
90647b07 | 55 | Lisp_Object Qwindow_size_fixed; |
49b996e7 | 56 | extern Lisp_Object Qleft_margin, Qright_margin; |
7ab12479 | 57 | |
521b203e | 58 | static int displayed_window_lines P_ ((struct window *)); |
5e14b1fc | 59 | static struct window *decode_window P_ ((Lisp_Object)); |
5500c422 GM |
60 | static int count_windows P_ ((struct window *)); |
61 | static int get_leaf_windows P_ ((struct window *, struct window **, int)); | |
62 | static void window_scroll P_ ((Lisp_Object, int, int, int)); | |
63 | static void window_scroll_pixel_based P_ ((Lisp_Object, int, int, int)); | |
64 | static void window_scroll_line_based P_ ((Lisp_Object, int, int, int)); | |
233a4a2c | 65 | static int window_min_size_1 P_ ((struct window *, int)); |
35ea56c9 | 66 | static int window_min_size_2 P_ ((struct window *, int)); |
f984d4fc | 67 | static int window_min_size P_ ((struct window *, int, int, int *)); |
5fe0b054 | 68 | static void size_window P_ ((Lisp_Object, int, int, int, int, int)); |
f95464e4 | 69 | static int freeze_window_start P_ ((struct window *, void *)); |
f984d4fc | 70 | static int window_fixed_size_p P_ ((struct window *, int, int)); |
56ebfae2 | 71 | static void enlarge_window P_ ((Lisp_Object, int, int)); |
67492200 | 72 | static Lisp_Object window_list P_ ((void)); |
f95464e4 | 73 | static int add_window_to_list P_ ((struct window *, void *)); |
118ea242 GM |
74 | static int candidate_window_p P_ ((Lisp_Object, Lisp_Object, Lisp_Object, |
75 | Lisp_Object)); | |
67492200 GM |
76 | static Lisp_Object next_window P_ ((Lisp_Object, Lisp_Object, |
77 | Lisp_Object, int)); | |
78 | static void decode_next_window_args P_ ((Lisp_Object *, Lisp_Object *, | |
79 | Lisp_Object *)); | |
f95464e4 GM |
80 | static int foreach_window_1 P_ ((struct window *, |
81 | int (* fn) (struct window *, void *), | |
82 | void *)); | |
cd2904bd | 83 | static Lisp_Object window_list_1 P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); |
b7354ddf | 84 | |
7ab12479 JB |
85 | /* This is the window in which the terminal's cursor should |
86 | be left when nothing is being done with it. This must | |
87 | always be a leaf window, and its buffer is selected by | |
88 | the top level editing loop at the end of each command. | |
89 | ||
90 | This value is always the same as | |
44fa5b1e | 91 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
92 | |
93 | Lisp_Object selected_window; | |
94 | ||
67492200 GM |
95 | /* A list of all windows for use by next_window and Fwindow_list. |
96 | Functions creating or deleting windows should invalidate this cache | |
97 | by setting it to nil. */ | |
98 | ||
99 | Lisp_Object Vwindow_list; | |
100 | ||
5500c422 GM |
101 | /* The mini-buffer window of the selected frame. |
102 | Note that you cannot test for mini-bufferness of an arbitrary window | |
103 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 | 104 | the selected window. */ |
5500c422 | 105 | |
7ab12479 JB |
106 | Lisp_Object minibuf_window; |
107 | ||
3f49fddc KS |
108 | /* Non-nil means it is the window whose mode line should be |
109 | shown as the selected window when the minibuffer is selected. */ | |
110 | ||
3dbab091 | 111 | Lisp_Object minibuf_selected_window; |
3f49fddc | 112 | |
7ab12479 | 113 | /* Non-nil means it is the window for C-M-v to scroll |
5500c422 GM |
114 | when the mini-buffer is selected. */ |
115 | ||
7ab12479 JB |
116 | Lisp_Object Vminibuf_scroll_window; |
117 | ||
118 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
5500c422 | 119 | |
7ab12479 JB |
120 | Lisp_Object Vother_window_scroll_buffer; |
121 | ||
7ab12479 | 122 | /* Non-nil means it's function to call to display temp buffers. */ |
5500c422 | 123 | |
7ab12479 JB |
124 | Lisp_Object Vtemp_buffer_show_function; |
125 | ||
e56263e5 KS |
126 | /* Non-zero means line and page scrolling on tall lines (with images) |
127 | does partial scrolling by modifying window-vscroll. */ | |
128 | ||
129 | int auto_window_vscroll_p; | |
130 | ||
cc91894c KS |
131 | /* Non-zero means to use mode-line-inactive face in all windows but the |
132 | selected-window and the minibuffer-scroll-window when the | |
133 | minibuffer is active. */ | |
134 | int mode_line_in_non_selected_windows; | |
26124d5e | 135 | |
7ab12479 | 136 | /* If a window gets smaller than either of these, it is removed. */ |
5500c422 | 137 | |
31ade731 SM |
138 | EMACS_INT window_min_height; |
139 | EMACS_INT window_min_width; | |
7ab12479 JB |
140 | |
141 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
5500c422 | 142 | |
7ab12479 JB |
143 | int pop_up_windows; |
144 | ||
44fa5b1e | 145 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
5500c422 | 146 | |
44fa5b1e | 147 | int pop_up_frames; |
7ab12479 | 148 | |
9c3da604 GM |
149 | /* Nonzero means reuse existing frames for displaying buffers. */ |
150 | ||
151 | int display_buffer_reuse_frames; | |
152 | ||
7ab12479 | 153 | /* Non-nil means use this function instead of default */ |
5500c422 | 154 | |
44fa5b1e | 155 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
156 | |
157 | /* Function to call to handle Fdisplay_buffer. */ | |
5500c422 | 158 | |
7ab12479 JB |
159 | Lisp_Object Vdisplay_buffer_function; |
160 | ||
6529ed87 GM |
161 | /* Non-nil means that Fdisplay_buffer should even the heights of windows. */ |
162 | ||
163 | Lisp_Object Veven_window_heights; | |
164 | ||
a90712c2 | 165 | /* List of buffer *names* for buffers that should have their own frames. */ |
5500c422 | 166 | |
a90712c2 RS |
167 | Lisp_Object Vspecial_display_buffer_names; |
168 | ||
169 | /* List of regexps for buffer names that should have their own frames. */ | |
5500c422 | 170 | |
a90712c2 RS |
171 | Lisp_Object Vspecial_display_regexps; |
172 | ||
173 | /* Function to pop up a special frame. */ | |
5500c422 | 174 | |
a90712c2 RS |
175 | Lisp_Object Vspecial_display_function; |
176 | ||
855d8627 | 177 | /* List of buffer *names* for buffers to appear in selected window. */ |
5500c422 | 178 | |
855d8627 RS |
179 | Lisp_Object Vsame_window_buffer_names; |
180 | ||
181 | /* List of regexps for buffer names to appear in selected window. */ | |
5500c422 | 182 | |
855d8627 RS |
183 | Lisp_Object Vsame_window_regexps; |
184 | ||
a58ec57d | 185 | /* Hook run at end of temp_output_buffer_show. */ |
5500c422 | 186 | |
a58ec57d RS |
187 | Lisp_Object Qtemp_buffer_show_hook; |
188 | ||
37962e60 | 189 | /* Fdisplay_buffer always splits the largest window |
7ab12479 | 190 | if that window is more than this high. */ |
5500c422 | 191 | |
31ade731 | 192 | EMACS_INT split_height_threshold; |
7ab12479 JB |
193 | |
194 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
5500c422 | 195 | |
31ade731 | 196 | EMACS_INT next_screen_context_lines; |
7ab12479 JB |
197 | |
198 | /* Incremented for each window created. */ | |
5500c422 | 199 | |
7ab12479 JB |
200 | static int sequence_number; |
201 | ||
5b03d3c0 | 202 | /* Nonzero after init_window_once has finished. */ |
5500c422 | 203 | |
5b03d3c0 RS |
204 | static int window_initialized; |
205 | ||
543f5fb1 | 206 | /* Hook to run when window config changes. */ |
5500c422 | 207 | |
543f5fb1 RS |
208 | Lisp_Object Qwindow_configuration_change_hook; |
209 | Lisp_Object Vwindow_configuration_change_hook; | |
210 | ||
d0c38d63 | 211 | /* Non-nil means scroll commands try to put point |
9317a85d | 212 | at the same screen height as previously. */ |
9317a85d | 213 | |
5500c422 GM |
214 | Lisp_Object Vscroll_preserve_screen_position; |
215 | ||
0d384044 RS |
216 | /* Incremented by 1 whenever a window is deleted. */ |
217 | ||
218 | int window_deletion_count; | |
219 | ||
66d43aea LT |
220 | /* Used by the function window_scroll_pixel_based */ |
221 | ||
66fe93d1 | 222 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 223 | |
5500c422 | 224 | #if 0 /* This isn't used anywhere. */ |
91a78190 | 225 | /* Nonzero means we can split a frame even if it is "unsplittable". */ |
eddd51c2 | 226 | static int inhibit_frame_unsplittable; |
5500c422 | 227 | #endif /* 0 */ |
7d601aaa | 228 | |
31ade731 | 229 | extern EMACS_INT scroll_margin; |
9317a85d | 230 | |
dba06815 | 231 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
7ab12479 JB |
232 | \f |
233 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
fdb82f93 PJ |
234 | doc: /* Returns t if OBJECT is a window. */) |
235 | (object) | |
413430c5 | 236 | Lisp_Object object; |
7ab12479 | 237 | { |
413430c5 | 238 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
239 | } |
240 | ||
806b4d9b | 241 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
fdb82f93 | 242 | doc: /* Returns t if OBJECT is a window which is currently visible. */) |
413430c5 EN |
243 | (object) |
244 | Lisp_Object object; | |
605be8af | 245 | { |
9e571f49 | 246 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af JB |
247 | } |
248 | ||
7ab12479 JB |
249 | Lisp_Object |
250 | make_window () | |
251 | { | |
cffec418 | 252 | Lisp_Object val; |
7ab12479 | 253 | register struct window *p; |
cffec418 | 254 | |
26605be9 | 255 | p = allocate_window (); |
2a1893f4 SM |
256 | ++sequence_number; |
257 | XSETFASTINT (p->sequence_number, sequence_number); | |
949cf20f KS |
258 | XSETFASTINT (p->left_col, 0); |
259 | XSETFASTINT (p->top_line, 0); | |
260 | XSETFASTINT (p->total_lines, 0); | |
261 | XSETFASTINT (p->total_cols, 0); | |
d834a2e9 | 262 | XSETFASTINT (p->hscroll, 0); |
ea68264b | 263 | XSETFASTINT (p->min_hscroll, 0); |
949cf20f | 264 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
265 | p->start = Fmake_marker (); |
266 | p->pointm = Fmake_marker (); | |
d834a2e9 | 267 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 268 | p->frame = Qnil; |
7ab12479 JB |
269 | p->display_table = Qnil; |
270 | p->dedicated = Qnil; | |
5500c422 GM |
271 | p->pseudo_window_p = 0; |
272 | bzero (&p->cursor, sizeof (p->cursor)); | |
273 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
274 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
275 | p->desired_matrix = p->current_matrix = 0; | |
7a146de2 | 276 | p->nrows_scale_factor = p->ncols_scale_factor = 1; |
5500c422 | 277 | p->phys_cursor_type = -1; |
4b26579e | 278 | p->phys_cursor_width = -1; |
5500c422 GM |
279 | p->must_be_updated_p = 0; |
280 | XSETFASTINT (p->window_end_vpos, 0); | |
281 | XSETFASTINT (p->window_end_pos, 0); | |
282 | p->window_end_valid = Qnil; | |
283 | p->vscroll = 0; | |
cffec418 | 284 | XSETWINDOW (val, p); |
5500c422 | 285 | XSETFASTINT (p->last_point, 0); |
7bbb5782 | 286 | p->frozen_window_start_p = 0; |
6b448755 | 287 | p->last_cursor_off_p = p->cursor_off_p = 0; |
949cf20f KS |
288 | p->left_margin_cols = Qnil; |
289 | p->right_margin_cols = Qnil; | |
290 | p->left_fringe_width = Qnil; | |
291 | p->right_fringe_width = Qnil; | |
292 | p->fringes_outside_margins = Qnil; | |
293 | p->scroll_bar_width = Qnil; | |
294 | p->vertical_scroll_bar_type = Qt; | |
67492200 GM |
295 | |
296 | Vwindow_list = Qnil; | |
7ab12479 JB |
297 | return val; |
298 | } | |
299 | ||
300 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
fdb82f93 PJ |
301 | doc: /* Return the window that the cursor now appears in and commands apply to. */) |
302 | () | |
7ab12479 JB |
303 | { |
304 | return selected_window; | |
305 | } | |
306 | ||
83762ba4 | 307 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
fdb82f93 PJ |
308 | doc: /* Return the window used now for minibuffers. |
309 | If the optional argument FRAME is specified, return the minibuffer window | |
310 | used by that frame. */) | |
311 | (frame) | |
83762ba4 | 312 | Lisp_Object frame; |
7ab12479 | 313 | { |
83762ba4 | 314 | if (NILP (frame)) |
1ae1a37d | 315 | frame = selected_frame; |
b7826503 | 316 | CHECK_LIVE_FRAME (frame); |
83762ba4 | 317 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); |
7ab12479 JB |
318 | } |
319 | ||
605be8af | 320 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
29a831f8 LT |
321 | doc: /* Returns non-nil if WINDOW is a minibuffer window. |
322 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 323 | (window) |
7ab12479 JB |
324 | Lisp_Object window; |
325 | { | |
326 | struct window *w = decode_window (window); | |
53bb6b99 | 327 | return MINI_WINDOW_P (w) ? Qt : Qnil; |
81e4d465 MB |
328 | } |
329 | ||
330 | ||
7ab12479 | 331 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
fdb82f93 | 332 | Spos_visible_in_window_p, 0, 3, 0, |
a0a37a6f | 333 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. |
fdb82f93 PJ |
334 | Return nil if that position is scrolled vertically out of view. |
335 | If a character is only partially visible, nil is returned, unless the | |
336 | optional argument PARTIALLY is non-nil. | |
a0a37a6f | 337 | If POS is only out of view because of horizontal scrolling, return non-nil. |
120b7781 | 338 | If POS is t, it specifies the position of the last visible glyph in WINDOW. |
0cc1039f KS |
339 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. |
340 | ||
341 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
5a857365 KS |
342 | return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), |
343 | where X and Y are the pixel coordinates relative to the top left corner | |
344 | of the window. The remaining elements are omitted if the character after | |
345 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
120b7781 | 346 | off-window at the top and bottom of the row, ROWH is the height of the |
7bbc67d2 | 347 | display row, and VPOS is the row number (0-based) containing POS. */) |
fdb82f93 | 348 | (pos, window, partially) |
5cdb3cf3 | 349 | Lisp_Object pos, window, partially; |
7ab12479 JB |
350 | { |
351 | register struct window *w; | |
7ab12479 JB |
352 | register int posint; |
353 | register struct buffer *buf; | |
9a132b1f | 354 | struct text_pos top; |
0cc1039f | 355 | Lisp_Object in_window = Qnil; |
5a857365 | 356 | int rtop, rbot, rowh, vpos, fully_p = 1; |
0cc1039f | 357 | int x, y; |
7ab12479 | 358 | |
f28b75a9 MB |
359 | w = decode_window (window); |
360 | buf = XBUFFER (w->buffer); | |
361 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
362 | ||
120b7781 KS |
363 | if (EQ (pos, Qt)) |
364 | posint = -1; | |
365 | else if (!NILP (pos)) | |
7ab12479 | 366 | { |
b7826503 | 367 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
368 | posint = XINT (pos); |
369 | } | |
f28b75a9 MB |
370 | else if (w == XWINDOW (selected_window)) |
371 | posint = PT; | |
372 | else | |
373 | posint = XMARKER (w->pointm)->charpos; | |
7ab12479 | 374 | |
0cc1039f KS |
375 | /* If position is above window start or outside buffer boundaries, |
376 | or if window start is out of range, position is not visible. */ | |
120b7781 KS |
377 | if ((EQ (pos, Qt) |
378 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
0cc1039f KS |
379 | && CHARPOS (top) >= BUF_BEGV (buf) |
380 | && CHARPOS (top) <= BUF_ZV (buf) | |
5a857365 | 381 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) |
e56263e5 | 382 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) |
0cc1039f KS |
383 | in_window = Qt; |
384 | ||
385 | if (!NILP (in_window) && !NILP (partially)) | |
5a857365 KS |
386 | { |
387 | Lisp_Object part = Qnil; | |
388 | if (!fully_p) | |
389 | part = list4 (make_number (rtop), make_number (rbot), | |
390 | make_number (rowh), make_number (vpos)); | |
391 | in_window = Fcons (make_number (x), | |
392 | Fcons (make_number (y), part)); | |
393 | } | |
394 | ||
9a132b1f | 395 | return in_window; |
7ab12479 | 396 | } |
53bb6b99 | 397 | |
536833ab | 398 | DEFUN ("window-line-height", Fwindow_line_height, |
7bbc67d2 | 399 | Swindow_line_height, 0, 2, 0, |
536833ab KS |
400 | doc: /* Return height in pixels of text line LINE in window WINDOW. |
401 | If WINDOW is nil or omitted, use selected window. | |
402 | ||
7bbc67d2 KS |
403 | Return height of current line if LINE is omitted or nil. Return height of |
404 | header or mode line if LINE is `header-line' and `mode-line'. | |
405 | Otherwise, LINE is a text line number starting from 0. A negative number | |
406 | counts from the end of the window. | |
536833ab | 407 | |
7bbc67d2 | 408 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height |
536833ab | 409 | in pixels of the visible part of the line, VPOS and YPOS are the |
68e67a4e | 410 | vertical position in lines and pixels of the line, relative to the top |
120b7781 | 411 | of the first text line, and OFFBOT is the number of off-window pixels at |
68e67a4e KS |
412 | the bottom of the text line. If there are off-window pixels at the top |
413 | of the (first) text line, YPOS is negative. | |
536833ab KS |
414 | |
415 | Return nil if window display is not up-to-date. In that case, use | |
416 | `pos-visible-in-window-p' to obtain the information. */) | |
417 | (line, window) | |
418 | Lisp_Object line, window; | |
b3a10345 KS |
419 | { |
420 | register struct window *w; | |
421 | register struct buffer *b; | |
422 | struct glyph_row *row, *end_row; | |
536833ab | 423 | int max_y, crop, i, n; |
b3a10345 KS |
424 | |
425 | w = decode_window (window); | |
426 | ||
427 | if (noninteractive | |
b3a10345 | 428 | || w->pseudo_window_p) |
7bbc67d2 | 429 | return Qnil; |
b3a10345 KS |
430 | |
431 | CHECK_BUFFER (w->buffer); | |
432 | b = XBUFFER (w->buffer); | |
433 | ||
434 | /* Fail if current matrix is not up-to-date. */ | |
435 | if (NILP (w->window_end_valid) | |
436 | || current_buffer->clip_changed | |
437 | || current_buffer->prevent_redisplay_optimizations_p | |
438 | || XFASTINT (w->last_modified) < BUF_MODIFF (b) | |
439 | || XFASTINT (w->last_overlay_modified) < BUF_OVERLAY_MODIFF (b)) | |
440 | return Qnil; | |
441 | ||
7bbc67d2 KS |
442 | if (NILP (line)) |
443 | { | |
444 | i = w->cursor.vpos; | |
445 | if (i < 0 || i >= w->current_matrix->nrows | |
446 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
447 | return Qnil; | |
448 | max_y = window_text_bottom_y (w); | |
449 | goto found_row; | |
450 | } | |
451 | ||
536833ab | 452 | if (EQ (line, Qheader_line)) |
b3a10345 | 453 | { |
536833ab KS |
454 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) |
455 | return Qnil; | |
456 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
b3a10345 KS |
457 | if (!row->enabled_p) |
458 | return Qnil; | |
536833ab KS |
459 | return list4 (make_number (row->height), |
460 | make_number (0), make_number (0), | |
461 | make_number (0)); | |
b3a10345 | 462 | } |
536833ab KS |
463 | |
464 | if (EQ (line, Qmode_line)) | |
b3a10345 | 465 | { |
536833ab KS |
466 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); |
467 | if (!row->enabled_p) | |
468 | return Qnil; | |
469 | return list4 (make_number (row->height), | |
470 | make_number (0), /* not accurate */ | |
471 | make_number (WINDOW_HEADER_LINE_HEIGHT (w) | |
472 | + window_text_bottom_y (w)), | |
473 | make_number (0)); | |
474 | } | |
b3a10345 | 475 | |
536833ab | 476 | CHECK_NUMBER (line); |
7bbc67d2 | 477 | n = XINT (line); |
536833ab KS |
478 | |
479 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
480 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
481 | max_y = window_text_bottom_y (w); | |
7bbc67d2 | 482 | i = 0; |
536833ab KS |
483 | |
484 | while ((n < 0 || i < n) | |
485 | && row <= end_row && row->enabled_p | |
486 | && row->y + row->height < max_y) | |
487 | row++, i++; | |
b3a10345 | 488 | |
536833ab KS |
489 | if (row > end_row || !row->enabled_p) |
490 | return Qnil; | |
491 | ||
7bbc67d2 | 492 | if (++n < 0) |
536833ab KS |
493 | { |
494 | if (-n > i) | |
495 | return Qnil; | |
7bbc67d2 KS |
496 | row += n; |
497 | i += n; | |
b3a10345 KS |
498 | } |
499 | ||
7bbc67d2 | 500 | found_row: |
536833ab KS |
501 | crop = max (0, (row->y + row->height) - max_y); |
502 | return list4 (make_number (row->height + min (0, row->y) - crop), | |
7bbc67d2 | 503 | make_number (i), |
536833ab KS |
504 | make_number (row->y), |
505 | make_number (crop)); | |
b3a10345 KS |
506 | } |
507 | ||
536833ab | 508 | |
7ab12479 JB |
509 | \f |
510 | static struct window * | |
511 | decode_window (window) | |
512 | register Lisp_Object window; | |
513 | { | |
265a9e55 | 514 | if (NILP (window)) |
7ab12479 JB |
515 | return XWINDOW (selected_window); |
516 | ||
b7826503 | 517 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
518 | return XWINDOW (window); |
519 | } | |
520 | ||
e995d23a RS |
521 | static struct window * |
522 | decode_any_window (window) | |
523 | register Lisp_Object window; | |
524 | { | |
525 | if (NILP (window)) | |
526 | return XWINDOW (selected_window); | |
527 | ||
528 | CHECK_WINDOW (window); | |
529 | return XWINDOW (window); | |
530 | } | |
531 | ||
7ab12479 | 532 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
c2755926 LT |
533 | doc: /* Return the buffer that WINDOW is displaying. |
534 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 535 | (window) |
7ab12479 JB |
536 | Lisp_Object window; |
537 | { | |
538 | return decode_window (window)->buffer; | |
539 | } | |
540 | ||
541 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
c85322d0 EZ |
542 | doc: /* Return the number of lines in WINDOW (including its mode line). |
543 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 544 | (window) |
7ab12479 JB |
545 | Lisp_Object window; |
546 | { | |
e995d23a | 547 | return decode_any_window (window)->total_lines; |
7ab12479 JB |
548 | } |
549 | ||
550 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
fdb82f93 PJ |
551 | doc: /* Return the number of display columns in WINDOW. |
552 | This is the width that is usable columns available for text in WINDOW. | |
553 | If you want to find out how many columns WINDOW takes up, | |
554 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */) | |
555 | (window) | |
7ab12479 JB |
556 | Lisp_Object window; |
557 | { | |
e995d23a | 558 | return make_number (window_box_text_cols (decode_any_window (window))); |
7ab12479 JB |
559 | } |
560 | ||
35ea56c9 MR |
561 | DEFUN ("window-full-width-p", Fwindow_full_width_p, Swindow_full_width_p, 0, 1, 0, |
562 | doc: /* Return t if WINDOW is as wide as its frame. | |
563 | WINDOW defaults to the selected window. */) | |
564 | (window) | |
565 | Lisp_Object window; | |
566 | { | |
567 | return WINDOW_FULL_WIDTH_P (decode_any_window (window)) ? Qt : Qnil; | |
568 | } | |
569 | ||
7ab12479 | 570 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 EZ |
571 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
572 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 573 | (window) |
7ab12479 JB |
574 | Lisp_Object window; |
575 | { | |
576 | return decode_window (window)->hscroll; | |
577 | } | |
578 | ||
579 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 | 580 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
a0a37a6f | 581 | Return NCOL. NCOL should be zero or positive. |
ebadb1e4 EZ |
582 | |
583 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 584 | window so that the location of point moves off-window. */) |
fdb82f93 | 585 | (window, ncol) |
ea68264b | 586 | Lisp_Object window, ncol; |
7ab12479 | 587 | { |
ea68264b GM |
588 | struct window *w = decode_window (window); |
589 | int hscroll; | |
7ab12479 | 590 | |
b7826503 | 591 | CHECK_NUMBER (ncol); |
ea68264b | 592 | hscroll = max (0, XINT (ncol)); |
177c0ea7 | 593 | |
ea68264b GM |
594 | /* Prevent redisplay shortcuts when changing the hscroll. */ |
595 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 596 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
177c0ea7 | 597 | |
c67fa410 | 598 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
599 | return ncol; |
600 | } | |
601 | ||
190eb263 RS |
602 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
603 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 604 | doc: /* Return WINDOW's redisplay end trigger value. |
c85322d0 | 605 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
606 | See `set-window-redisplay-end-trigger' for more information. */) |
607 | (window) | |
190eb263 RS |
608 | Lisp_Object window; |
609 | { | |
610 | return decode_window (window)->redisplay_end_trigger; | |
611 | } | |
612 | ||
613 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
614 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
615 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
616 | VALUE should be a buffer position (typically a marker) or nil. | |
617 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
618 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
619 | with two arguments: WINDOW, and the end trigger value. | |
620 | Afterwards the end-trigger value is reset to nil. */) | |
621 | (window, value) | |
190eb263 RS |
622 | register Lisp_Object window, value; |
623 | { | |
624 | register struct window *w; | |
625 | ||
626 | w = decode_window (window); | |
627 | w->redisplay_end_trigger = value; | |
628 | return value; | |
629 | } | |
630 | ||
7ab12479 | 631 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 PJ |
632 | doc: /* Return a list of the edge coordinates of WINDOW. |
633 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
c99a9eb3 RS |
634 | RIGHT is one more than the rightmost column occupied by WINDOW, |
635 | and BOTTOM is one more than the bottommost row occupied by WINDOW. | |
636 | The edges include the space used by the window's scroll bar, | |
637 | display margins, fringes, header line, and mode line, if it has them. | |
638 | To get the edges of the actual text area, use `window-inside-edges'. */) | |
fdb82f93 | 639 | (window) |
7ab12479 JB |
640 | Lisp_Object window; |
641 | { | |
e995d23a | 642 | register struct window *w = decode_any_window (window); |
7ab12479 | 643 | |
949cf20f KS |
644 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
645 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), | |
646 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), | |
647 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), | |
648 | Qnil)))); | |
7ab12479 JB |
649 | } |
650 | ||
c99a9eb3 RS |
651 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
652 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
653 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
654 | RIGHT is one more than the rightmost x position occupied by WINDOW, | |
655 | and BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
656 | The pixel edges include the space used by the window's scroll bar, | |
657 | display margins, fringes, header line, and mode line, if it has them. | |
658 | To get the edges of the actual text area, use `window-inside-pixel-edges'. */) | |
659 | (window) | |
660 | Lisp_Object window; | |
661 | { | |
e995d23a | 662 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
663 | |
664 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w)), | |
665 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w)), | |
666 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w)), | |
667 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w)), | |
668 | Qnil)))); | |
669 | } | |
670 | ||
671 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, | |
672 | doc: /* Return a list of the edge coordinates of WINDOW. | |
673 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
674 | RIGHT is one more than the rightmost column used by text in WINDOW, | |
675 | and BOTTOM is one more than the bottommost row used by text in WINDOW. | |
676 | The inside edges do not include the space used by the window's scroll bar, | |
677 | display margins, fringes, header line, and/or mode line. */) | |
678 | (window) | |
679 | Lisp_Object window; | |
680 | { | |
e995d23a | 681 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
682 | |
683 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w) | |
684 | + WINDOW_LEFT_MARGIN_COLS (w) | |
685 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
686 | make_number (WINDOW_TOP_EDGE_LINE (w) | |
687 | + WINDOW_HEADER_LINE_LINES (w)), | |
f3fbdb1f | 688 | make_number (WINDOW_BOX_RIGHT_EDGE_COL (w) |
c99a9eb3 RS |
689 | - WINDOW_RIGHT_MARGIN_COLS (w) |
690 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
691 | make_number (WINDOW_BOTTOM_EDGE_LINE (w) | |
692 | - WINDOW_MODE_LINE_LINES (w))); | |
693 | } | |
694 | ||
695 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
a0a37a6f | 696 | doc: /* Return a list of the edge pixel coordinates of WINDOW. |
c99a9eb3 RS |
697 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. |
698 | RIGHT is one more than the rightmost x position used by text in WINDOW, | |
699 | and BOTTOM is one more than the bottommost y position used by text in WINDOW. | |
700 | The inside edges do not include the space used by the window's scroll bar, | |
701 | display margins, fringes, header line, and/or mode line. */) | |
702 | (window) | |
703 | Lisp_Object window; | |
704 | { | |
e995d23a | 705 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
706 | |
707 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
708 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
709 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
710 | make_number (WINDOW_TOP_EDGE_Y (w) | |
711 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
f3fbdb1f | 712 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) |
c99a9eb3 RS |
713 | - WINDOW_RIGHT_MARGIN_WIDTH (w) |
714 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
715 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
716 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
717 | } | |
718 | ||
fbad6f9a | 719 | /* Test if the character at column *X, row *Y is within window W. |
341f3858 | 720 | If it is not, return ON_NOTHING; |
d5783c40 JB |
721 | if it is in the window's text area, |
722 | set *x and *y to its location relative to the upper left corner | |
723 | of the window, and | |
341f3858 KS |
724 | return ON_TEXT; |
725 | if it is on the window's modeline, return ON_MODE_LINE; | |
d5783c40 | 726 | if it is on the border between the window and its right sibling, |
341f3858 | 727 | return ON_VERTICAL_BORDER. |
6487f669 RS |
728 | if it is on a scroll bar, |
729 | return ON_SCROLL_BAR. | |
341f3858 | 730 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 731 | if it is in left or right fringe of the window, |
341f3858 KS |
732 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE, and convert *X and *Y |
733 | to window-relative coordinates; | |
49b996e7 | 734 | if it is in the marginal area to the left/right of the window, |
341f3858 KS |
735 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN, and convert *X and *Y |
736 | to window-relative coordinates. | |
5500c422 GM |
737 | |
738 | X and Y are frame relative pixel coordinates. */ | |
739 | ||
7442878f | 740 | static enum window_part |
d5783c40 JB |
741 | coordinates_in_window (w, x, y) |
742 | register struct window *w; | |
743 | register int *x, *y; | |
744 | { | |
b0228ace GM |
745 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
746 | int left_x, right_x, top_y, bottom_y; | |
7442878f | 747 | enum window_part part; |
949cf20f KS |
748 | int ux = FRAME_COLUMN_WIDTH (f); |
749 | int x0 = WINDOW_LEFT_EDGE_X (w); | |
750 | int x1 = WINDOW_RIGHT_EDGE_X (w); | |
dad75588 GM |
751 | /* The width of the area where the vertical line can be dragged. |
752 | (Between mode lines for instance. */ | |
753 | int grabbable_width = ux; | |
949cf20f | 754 | int lmargin_width, rmargin_width, text_left, text_right; |
b0228ace | 755 | |
466539bc EZ |
756 | /* In what's below, we subtract 1 when computing right_x because we |
757 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
758 | if (w->pseudo_window_p) |
759 | { | |
760 | left_x = 0; | |
949cf20f KS |
761 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
762 | top_y = WINDOW_TOP_EDGE_Y (w); | |
763 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 GM |
764 | } |
765 | else | |
766 | { | |
949cf20f KS |
767 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
768 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
769 | top_y = WINDOW_TOP_EDGE_Y (w); | |
770 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 | 771 | } |
37962e60 | 772 | |
949cf20f KS |
773 | /* Outside any interesting row? */ |
774 | if (*y < top_y || *y >= bottom_y) | |
775 | return ON_NOTHING; | |
776 | ||
1cb794ba GM |
777 | /* On the mode line or header line? If it's near the start of |
778 | the mode or header line of window that's has a horizontal | |
779 | sibling, say it's on the vertical line. That's to be able | |
780 | to resize windows horizontally in case we're using toolkit | |
781 | scroll bars. */ | |
b0228ace | 782 | |
1cb794ba | 783 | if (WINDOW_WANTS_MODELINE_P (w) |
0de01dfe | 784 | && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)) |
1cb794ba | 785 | { |
949cf20f KS |
786 | part = ON_MODE_LINE; |
787 | ||
788 | header_vertical_border_check: | |
b0228ace GM |
789 | /* We're somewhere on the mode line. We consider the place |
790 | between mode lines of horizontally adjacent mode lines | |
791 | as the vertical border. If scroll bars on the left, | |
792 | return the right window. */ | |
949cf20f KS |
793 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) |
794 | || WINDOW_RIGHTMOST_P (w)) | |
b0228ace | 795 | { |
949cf20f | 796 | if (!WINDOW_LEFTMOST_P (w) && abs (*x - x0) < grabbable_width) |
f8c62b70 | 797 | { |
3f489dc7 KS |
798 | /* Convert X and Y to window relative coordinates. |
799 | Vertical border is at the left edge of window. */ | |
f8c62b70 NR |
800 | *x = max (0, *x - x0); |
801 | *y -= top_y; | |
802 | return ON_VERTICAL_BORDER; | |
803 | } | |
b0228ace | 804 | } |
79fd290e | 805 | else |
b0228ace | 806 | { |
949cf20f | 807 | if (abs (*x - x1) < grabbable_width) |
f8c62b70 | 808 | { |
3f489dc7 KS |
809 | /* Convert X and Y to window relative coordinates. |
810 | Vertical border is at the right edge of window. */ | |
f8c62b70 NR |
811 | *x = min (x1, *x) - x0; |
812 | *y -= top_y; | |
813 | return ON_VERTICAL_BORDER; | |
814 | } | |
b0228ace | 815 | } |
949cf20f | 816 | |
cb639b8f KS |
817 | if (*x < x0 || *x >= x1) |
818 | return ON_NOTHING; | |
819 | ||
a5303820 KS |
820 | /* Convert X and Y to window relative coordinates. |
821 | Mode line starts at left edge of window. */ | |
822 | *x -= x0; | |
823 | *y -= top_y; | |
949cf20f | 824 | return part; |
b0228ace | 825 | } |
949cf20f KS |
826 | |
827 | if (WINDOW_WANTS_HEADER_LINE_P (w) | |
949cf20f | 828 | && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) |
1cb794ba | 829 | { |
949cf20f KS |
830 | part = ON_HEADER_LINE; |
831 | goto header_vertical_border_check; | |
1cb794ba | 832 | } |
949cf20f | 833 | |
cb639b8f KS |
834 | if (*x < x0 || *x >= x1) |
835 | return ON_NOTHING; | |
836 | ||
949cf20f KS |
837 | /* Outside any interesting column? */ |
838 | if (*x < left_x || *x > right_x) | |
4d1add72 KS |
839 | { |
840 | *y -= top_y; | |
841 | return ON_SCROLL_BAR; | |
842 | } | |
949cf20f KS |
843 | |
844 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
845 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 846 | |
949cf20f KS |
847 | text_left = window_box_left (w, TEXT_AREA); |
848 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
849 | ||
850 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 851 | { |
447e9da0 | 852 | if (!w->pseudo_window_p |
949cf20f | 853 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 854 | && !WINDOW_RIGHTMOST_P (w) |
949cf20f | 855 | && (abs (*x - right_x) < grabbable_width)) |
f8c62b70 | 856 | { |
3f489dc7 KS |
857 | /* Convert X and Y to window relative coordinates. |
858 | Vertical border is at the right edge of window. */ | |
f8c62b70 NR |
859 | *x = min (right_x, *x) - left_x; |
860 | *y -= top_y; | |
861 | return ON_VERTICAL_BORDER; | |
862 | } | |
fbad6f9a | 863 | } |
447e9da0 GM |
864 | else |
865 | { | |
866 | /* Need to say "*x > right_x" rather than >=, since on character | |
867 | terminals, the vertical line's x coordinate is right_x. */ | |
949cf20f KS |
868 | if (!w->pseudo_window_p |
869 | && !WINDOW_RIGHTMOST_P (w) | |
870 | && *x > right_x - ux) | |
b0228ace GM |
871 | { |
872 | /* On the border on the right side of the window? Assume that | |
873 | this area begins at RIGHT_X minus a canonical char width. */ | |
f8c62b70 NR |
874 | *x = min (right_x, *x) - left_x; |
875 | *y -= top_y; | |
949cf20f | 876 | return ON_VERTICAL_BORDER; |
b0228ace | 877 | } |
447e9da0 | 878 | } |
b0228ace | 879 | |
949cf20f KS |
880 | if (*x < text_left) |
881 | { | |
882 | if (lmargin_width > 0 | |
883 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
884 | ? (*x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) | |
885 | : (*x < left_x + lmargin_width))) | |
a5303820 | 886 | { |
0de01dfe | 887 | *x -= left_x; |
a5303820 KS |
888 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) |
889 | *x -= WINDOW_LEFT_FRINGE_WIDTH (w); | |
890 | *y -= top_y; | |
891 | return ON_LEFT_MARGIN; | |
892 | } | |
949cf20f KS |
893 | |
894 | /* Convert X and Y to window-relative pixel coordinates. */ | |
895 | *x -= left_x; | |
896 | *y -= top_y; | |
897 | return ON_LEFT_FRINGE; | |
898 | } | |
899 | ||
900 | if (*x >= text_right) | |
901 | { | |
902 | if (rmargin_width > 0 | |
903 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
904 | ? (*x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) | |
905 | : (*x >= right_x - rmargin_width))) | |
a5303820 | 906 | { |
66d41723 KS |
907 | *x -= right_x - rmargin_width; |
908 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
909 | *x += WINDOW_RIGHT_FRINGE_WIDTH (w); | |
a5303820 KS |
910 | *y -= top_y; |
911 | return ON_RIGHT_MARGIN; | |
912 | } | |
949cf20f KS |
913 | |
914 | /* Convert X and Y to window-relative pixel coordinates. */ | |
915 | *x -= left_x + WINDOW_LEFT_FRINGE_WIDTH (w); | |
916 | *y -= top_y; | |
917 | return ON_RIGHT_FRINGE; | |
918 | } | |
919 | ||
920 | /* Everything special ruled out - must be on text area */ | |
66d41723 | 921 | *x -= text_left; |
949cf20f KS |
922 | *y -= top_y; |
923 | return ON_TEXT; | |
d5783c40 JB |
924 | } |
925 | ||
b0228ace | 926 | |
d5783c40 | 927 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
928 | Scoordinates_in_window_p, 2, 2, 0, |
929 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
930 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
931 | measured in characters from the upper-left corner of the frame. | |
932 | \(0 . 0) denotes the character in the upper left corner of the | |
933 | frame. | |
934 | If COORDINATES are in the text portion of WINDOW, | |
935 | the coordinates relative to the window are returned. | |
936 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
937 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
938 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
939 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 940 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
941 | `vertical-line' is returned. |
942 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
943 | or `right-margin' is returned. */) | |
fdb82f93 | 944 | (coordinates, window) |
d5783c40 JB |
945 | register Lisp_Object coordinates, window; |
946 | { | |
5500c422 GM |
947 | struct window *w; |
948 | struct frame *f; | |
d5783c40 | 949 | int x, y; |
5500c422 | 950 | Lisp_Object lx, ly; |
d5783c40 | 951 | |
e995d23a | 952 | CHECK_WINDOW (window); |
5500c422 GM |
953 | w = XWINDOW (window); |
954 | f = XFRAME (w->frame); | |
b7826503 | 955 | CHECK_CONS (coordinates); |
5500c422 GM |
956 | lx = Fcar (coordinates); |
957 | ly = Fcdr (coordinates); | |
b7826503 PJ |
958 | CHECK_NUMBER_OR_FLOAT (lx); |
959 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
960 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
961 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 GM |
962 | |
963 | switch (coordinates_in_window (w, &x, &y)) | |
d5783c40 | 964 | { |
7442878f | 965 | case ON_NOTHING: |
d5783c40 JB |
966 | return Qnil; |
967 | ||
7442878f GM |
968 | case ON_TEXT: |
969 | /* X and Y are now window relative pixel coordinates. Convert | |
970 | them to canonical char units before returning them. */ | |
949cf20f KS |
971 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
972 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 973 | |
7442878f | 974 | case ON_MODE_LINE: |
d5783c40 | 975 | return Qmode_line; |
37962e60 | 976 | |
7442878f | 977 | case ON_VERTICAL_BORDER: |
e5d77022 | 978 | return Qvertical_line; |
d5783c40 | 979 | |
7442878f | 980 | case ON_HEADER_LINE: |
045dee35 | 981 | return Qheader_line; |
5500c422 | 982 | |
7442878f GM |
983 | case ON_LEFT_FRINGE: |
984 | return Qleft_fringe; | |
177c0ea7 | 985 | |
7442878f GM |
986 | case ON_RIGHT_FRINGE: |
987 | return Qright_fringe; | |
fbad6f9a | 988 | |
49b996e7 GM |
989 | case ON_LEFT_MARGIN: |
990 | return Qleft_margin; | |
177c0ea7 | 991 | |
49b996e7 GM |
992 | case ON_RIGHT_MARGIN: |
993 | return Qright_margin; | |
994 | ||
6487f669 RS |
995 | case ON_SCROLL_BAR: |
996 | /* Historically we are supposed to return nil in this case. */ | |
997 | return Qnil; | |
998 | ||
d5783c40 JB |
999 | default: |
1000 | abort (); | |
1001 | } | |
1002 | } | |
1003 | ||
67492200 GM |
1004 | |
1005 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
1006 | Check if window W contains coordinates specified by USER_DATA which |
1007 | is actually a pointer to a struct check_window_data CW. | |
1008 | ||
1009 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
1010 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 1011 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
1012 | zero from this function to stop iterating over windows. */ |
1013 | ||
1014 | struct check_window_data | |
1015 | { | |
1016 | Lisp_Object *window; | |
341f3858 KS |
1017 | int *x, *y; |
1018 | enum window_part *part; | |
f95464e4 | 1019 | }; |
67492200 GM |
1020 | |
1021 | static int | |
f95464e4 | 1022 | check_window_containing (w, user_data) |
67492200 | 1023 | struct window *w; |
f95464e4 | 1024 | void *user_data; |
67492200 | 1025 | { |
f95464e4 | 1026 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
1027 | enum window_part found; |
1028 | int continue_p = 1; | |
67492200 | 1029 | |
f95464e4 | 1030 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1031 | if (found != ON_NOTHING) |
67492200 | 1032 | { |
341f3858 | 1033 | *cw->part = found; |
f95464e4 | 1034 | XSETWINDOW (*cw->window, w); |
7442878f | 1035 | continue_p = 0; |
67492200 | 1036 | } |
177c0ea7 | 1037 | |
7442878f | 1038 | return continue_p; |
67492200 GM |
1039 | } |
1040 | ||
1041 | ||
5500c422 | 1042 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1043 | return it as a Lisp_Object. |
1044 | ||
1045 | If X, Y is on one of the window's special `window_part' elements, | |
1046 | set *PART to the id of that element, and return X and Y converted | |
1047 | to window relative coordinates in WX and WY. | |
1048 | ||
341f3858 | 1049 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1050 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1051 | ||
1052 | This function was previously implemented with a loop cycling over | |
1053 | windows with Fnext_window, and starting with the frame's selected | |
1054 | window. It turned out that this doesn't work with an | |
1055 | implementation of next_window using Vwindow_list, because | |
1056 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1057 | tree of F when this function is called asynchronously from | |
1058 | note_mouse_highlight. The original loop didn't terminate in this | |
1059 | case. */ | |
5500c422 | 1060 | |
7ab12479 | 1061 | Lisp_Object |
949cf20f | 1062 | window_from_coordinates (f, x, y, part, wx, wy, tool_bar_p) |
67492200 | 1063 | struct frame *f; |
7ab12479 | 1064 | int x, y; |
341f3858 | 1065 | enum window_part *part; |
949cf20f | 1066 | int *wx, *wy; |
9ea173e8 | 1067 | int tool_bar_p; |
7ab12479 | 1068 | { |
67492200 | 1069 | Lisp_Object window; |
f95464e4 | 1070 | struct check_window_data cw; |
341f3858 KS |
1071 | enum window_part dummy; |
1072 | ||
1073 | if (part == 0) | |
1074 | part = &dummy; | |
5500c422 | 1075 | |
67492200 | 1076 | window = Qnil; |
f95464e4 GM |
1077 | cw.window = &window, cw.x = &x, cw.y = &y; cw.part = part; |
1078 | foreach_window (f, check_window_containing, &cw); | |
177c0ea7 | 1079 | |
67492200 GM |
1080 | /* If not found above, see if it's in the tool bar window, if a tool |
1081 | bar exists. */ | |
1082 | if (NILP (window) | |
1083 | && tool_bar_p | |
1084 | && WINDOWP (f->tool_bar_window) | |
949cf20f | 1085 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 |
7442878f GM |
1086 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), &x, &y) |
1087 | != ON_NOTHING)) | |
5500c422 | 1088 | { |
341f3858 | 1089 | *part = ON_TEXT; |
67492200 | 1090 | window = f->tool_bar_window; |
5500c422 | 1091 | } |
37962e60 | 1092 | |
949cf20f KS |
1093 | if (wx) *wx = x; |
1094 | if (wy) *wy = y; | |
1095 | ||
67492200 | 1096 | return window; |
7ab12479 JB |
1097 | } |
1098 | ||
ab17c3f2 | 1099 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 PJ |
1100 | doc: /* Return window containing coordinates X and Y on FRAME. |
1101 | If omitted, FRAME defaults to the currently selected frame. | |
1102 | The top left corner of the frame is considered to be row 0, | |
1103 | column 0. */) | |
1104 | (x, y, frame) | |
1105 | Lisp_Object x, y, frame; | |
7ab12479 | 1106 | { |
5500c422 | 1107 | struct frame *f; |
7ab12479 | 1108 | |
44fa5b1e | 1109 | if (NILP (frame)) |
1ae1a37d | 1110 | frame = selected_frame; |
b7826503 | 1111 | CHECK_LIVE_FRAME (frame); |
5500c422 | 1112 | f = XFRAME (frame); |
7ab12479 | 1113 | |
5500c422 | 1114 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1115 | CHECK_NUMBER_OR_FLOAT (x); |
1116 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1117 | |
177c0ea7 | 1118 | return window_from_coordinates (f, |
2c77cf3b RS |
1119 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1120 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1121 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1122 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
949cf20f | 1123 | 0, 0, 0, 0); |
7ab12479 JB |
1124 | } |
1125 | ||
1126 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1127 | doc: /* Return current value of point in WINDOW. |
c85322d0 EZ |
1128 | WINDOW defaults to the selected window. |
1129 | ||
fdb82f93 PJ |
1130 | For a nonselected window, this is the value point would have |
1131 | if that window were selected. | |
1132 | ||
1133 | Note that, when WINDOW is the selected window and its buffer | |
1134 | is also currently selected, the value returned is the same as (point). | |
1135 | It would be more strictly correct to return the `top-level' value | |
1136 | of point, outside of any save-excursion forms. | |
1137 | But that is hard to define. */) | |
1138 | (window) | |
7ab12479 JB |
1139 | Lisp_Object window; |
1140 | { | |
1141 | register struct window *w = decode_window (window); | |
1142 | ||
1143 | if (w == XWINDOW (selected_window) | |
1144 | && current_buffer == XBUFFER (w->buffer)) | |
1145 | return Fpoint (); | |
1146 | return Fmarker_position (w->pointm); | |
1147 | } | |
1148 | ||
1149 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1150 | doc: /* Return position at which display currently starts in WINDOW. |
c85322d0 | 1151 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
1152 | This is updated by redisplay or by calling `set-window-start'. */) |
1153 | (window) | |
7ab12479 JB |
1154 | Lisp_Object window; |
1155 | { | |
1156 | return Fmarker_position (decode_window (window)->start); | |
1157 | } | |
1158 | ||
8646118f RS |
1159 | /* This is text temporarily removed from the doc string below. |
1160 | ||
fdb82f93 PJ |
1161 | This function returns nil if the position is not currently known. |
1162 | That happens when redisplay is preempted and doesn't finish. | |
1163 | If in that case you want to compute where the end of the window would | |
1164 | have been if redisplay had finished, do this: | |
1165 | (save-excursion | |
1166 | (goto-char (window-start window)) | |
1167 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1168 | (point))") */ |
1169 | ||
478292ed | 1170 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1171 | doc: /* Return position at which display currently ends in WINDOW. |
c85322d0 | 1172 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
1173 | This is updated by redisplay, when it runs to completion. |
1174 | Simply changing the buffer text or setting `window-start' | |
1175 | does not update this value. | |
a0a37a6f LT |
1176 | Return nil if there is no recorded value. \(This can happen if the |
1177 | last redisplay of WINDOW was preempted, and did not finish.) | |
fdb82f93 PJ |
1178 | If UPDATE is non-nil, compute the up-to-date position |
1179 | if it isn't already recorded. */) | |
1180 | (window, update) | |
478292ed | 1181 | Lisp_Object window, update; |
7ab12479 JB |
1182 | { |
1183 | Lisp_Object value; | |
1184 | struct window *w = decode_window (window); | |
5a41ab94 | 1185 | Lisp_Object buf; |
31790df3 | 1186 | struct buffer *b; |
5a41ab94 RS |
1187 | |
1188 | buf = w->buffer; | |
b7826503 | 1189 | CHECK_BUFFER (buf); |
b3a10345 | 1190 | b = XBUFFER (buf); |
5a41ab94 | 1191 | |
8646118f | 1192 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1193 | /* If we don't know the end position, return nil. |
1194 | The user can compute it with vertical-motion if he wants to. | |
1195 | It would be nicer to do it automatically, | |
1196 | but that's so slow that it would probably bother people. */ | |
1197 | if (NILP (w->window_end_valid)) | |
1198 | return Qnil; | |
8646118f | 1199 | #endif |
7250968e | 1200 | |
478292ed RS |
1201 | if (! NILP (update) |
1202 | && ! (! NILP (w->window_end_valid) | |
dfc265a3 | 1203 | && XFASTINT (w->last_modified) >= BUF_MODIFF (b) |
4c9564e8 | 1204 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (b)) |
41791a20 | 1205 | && !noninteractive) |
478292ed | 1206 | { |
cbc099e5 GM |
1207 | struct text_pos startp; |
1208 | struct it it; | |
b3a10345 KS |
1209 | struct buffer *old_buffer = NULL; |
1210 | ||
1211 | /* Cannot use Fvertical_motion because that function doesn't | |
1212 | cope with variable-height lines. */ | |
1213 | if (b != current_buffer) | |
1214 | { | |
1215 | old_buffer = current_buffer; | |
1216 | set_buffer_internal (b); | |
1217 | } | |
2d6d9df0 GM |
1218 | |
1219 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1220 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1221 | `-l' containing a call to `rmail' with subsequent other |
1222 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1223 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 1224 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 1225 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 1226 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 1227 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1228 | else |
cbc099e5 GM |
1229 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
1230 | ||
cbc099e5 GM |
1231 | start_display (&it, w, startp); |
1232 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1233 | if (it.current_y < it.last_visible_y) |
1234 | move_it_past_eol (&it); | |
cbc099e5 | 1235 | value = make_number (IT_CHARPOS (it)); |
177c0ea7 | 1236 | |
99593a9d GM |
1237 | if (old_buffer) |
1238 | set_buffer_internal (old_buffer); | |
478292ed RS |
1239 | } |
1240 | else | |
b3a10345 | 1241 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1242 | |
1243 | return value; | |
1244 | } | |
1245 | ||
1246 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
a0a37a6f LT |
1247 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
1248 | Return POS. */) | |
fdb82f93 | 1249 | (window, pos) |
7ab12479 JB |
1250 | Lisp_Object window, pos; |
1251 | { | |
1252 | register struct window *w = decode_window (window); | |
1253 | ||
b7826503 | 1254 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
1255 | if (w == XWINDOW (selected_window) |
1256 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
1257 | Fgoto_char (pos); |
1258 | else | |
1259 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 1260 | |
0685cb3c GM |
1261 | /* We have to make sure that redisplay updates the window to show |
1262 | the new value of point. */ | |
1263 | if (!EQ (window, selected_window)) | |
799417bd | 1264 | ++windows_or_buffers_changed; |
177c0ea7 | 1265 | |
7ab12479 JB |
1266 | return pos; |
1267 | } | |
1268 | ||
1269 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1270 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
a0a37a6f | 1271 | Return POS. |
fdb82f93 PJ |
1272 | Optional third arg NOFORCE non-nil inhibits next redisplay |
1273 | from overriding motion of point in order to display at this exact start. */) | |
1274 | (window, pos, noforce) | |
7ab12479 JB |
1275 | Lisp_Object window, pos, noforce; |
1276 | { | |
1277 | register struct window *w = decode_window (window); | |
1278 | ||
b7826503 | 1279 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
1280 | set_marker_restricted (w->start, pos, w->buffer); |
1281 | /* this is not right, but much easier than doing what is right. */ | |
1282 | w->start_at_line_beg = Qnil; | |
265a9e55 | 1283 | if (NILP (noforce)) |
7ab12479 JB |
1284 | w->force_start = Qt; |
1285 | w->update_mode_line = Qt; | |
d834a2e9 | 1286 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1287 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
1288 | if (!EQ (window, selected_window)) |
1289 | windows_or_buffers_changed++; | |
ce7fae7d | 1290 | |
7ab12479 JB |
1291 | return pos; |
1292 | } | |
1293 | ||
1294 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
1295 | 1, 1, 0, | |
fdb82f93 PJ |
1296 | doc: /* Return WINDOW's dedicated object, usually t or nil. |
1297 | See also `set-window-dedicated-p'. */) | |
1298 | (window) | |
7ab12479 JB |
1299 | Lisp_Object window; |
1300 | { | |
1301 | return decode_window (window)->dedicated; | |
1302 | } | |
1303 | ||
d207b766 RS |
1304 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1305 | Sset_window_dedicated_p, 2, 2, 0, | |
fdb82f93 PJ |
1306 | doc: /* Control whether WINDOW is dedicated to the buffer it displays. |
1307 | If it is dedicated, Emacs will not automatically change | |
1308 | which buffer appears in it. | |
1309 | The second argument is the new value for the dedication flag; | |
1310 | non-nil means yes. */) | |
1311 | (window, arg) | |
1312 | Lisp_Object window, arg; | |
7ab12479 JB |
1313 | { |
1314 | register struct window *w = decode_window (window); | |
1315 | ||
2d0834cc | 1316 | w->dedicated = arg; |
7ab12479 JB |
1317 | |
1318 | return w->dedicated; | |
1319 | } | |
1320 | ||
1321 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
1322 | 0, 1, 0, | |
c85322d0 EZ |
1323 | doc: /* Return the display-table that WINDOW is using. |
1324 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 1325 | (window) |
7ab12479 JB |
1326 | Lisp_Object window; |
1327 | { | |
1328 | return decode_window (window)->display_table; | |
1329 | } | |
1330 | ||
5500c422 GM |
1331 | /* Get the display table for use on window W. This is either W's |
1332 | display table or W's buffer's display table. Ignore the specified | |
1333 | tables if they are not valid; if no valid table is specified, | |
1334 | return 0. */ | |
7ab12479 | 1335 | |
319315f1 | 1336 | struct Lisp_Char_Table * |
7ab12479 JB |
1337 | window_display_table (w) |
1338 | struct window *w; | |
1339 | { | |
c756cdbe GM |
1340 | struct Lisp_Char_Table *dp = NULL; |
1341 | ||
1342 | if (DISP_TABLE_P (w->display_table)) | |
1343 | dp = XCHAR_TABLE (w->display_table); | |
1344 | else if (BUFFERP (w->buffer)) | |
1345 | { | |
1346 | struct buffer *b = XBUFFER (w->buffer); | |
177c0ea7 | 1347 | |
c756cdbe GM |
1348 | if (DISP_TABLE_P (b->display_table)) |
1349 | dp = XCHAR_TABLE (b->display_table); | |
1350 | else if (DISP_TABLE_P (Vstandard_display_table)) | |
1351 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1352 | } | |
171d003c | 1353 | |
c756cdbe | 1354 | return dp; |
7ab12479 JB |
1355 | } |
1356 | ||
3a2712f9 | 1357 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 PJ |
1358 | doc: /* Set WINDOW's display-table to TABLE. */) |
1359 | (window, table) | |
7ab12479 JB |
1360 | register Lisp_Object window, table; |
1361 | { | |
1362 | register struct window *w; | |
7ab12479 JB |
1363 | |
1364 | w = decode_window (window); | |
1365 | w->display_table = table; | |
1366 | return table; | |
1367 | } | |
1368 | \f | |
1369 | /* Record info on buffer window w is displaying | |
1370 | when it is about to cease to display that buffer. */ | |
dfcf069d | 1371 | static void |
7ab12479 JB |
1372 | unshow_buffer (w) |
1373 | register struct window *w; | |
1374 | { | |
12cae7c0 | 1375 | Lisp_Object buf; |
b73ea88e | 1376 | struct buffer *b; |
7ab12479 | 1377 | |
12cae7c0 | 1378 | buf = w->buffer; |
b73ea88e RS |
1379 | b = XBUFFER (buf); |
1380 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1381 | abort (); |
1382 | ||
573f41ab | 1383 | #if 0 |
7ab12479 JB |
1384 | if (w == XWINDOW (selected_window) |
1385 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1386 | /* Do this except when the selected window's buffer | |
1387 | is being removed from some other window. */ | |
573f41ab RS |
1388 | #endif |
1389 | /* last_window_start records the start position that this buffer | |
1390 | had in the last window to be disconnected from it. | |
1391 | Now that this statement is unconditional, | |
1392 | it is possible for the buffer to be displayed in the | |
1393 | selected window, while last_window_start reflects another | |
1394 | window which was recently showing the same buffer. | |
1395 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1396 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1397 | |
1398 | /* Point in the selected window's buffer | |
1399 | is actually stored in that buffer, and the window's pointm isn't used. | |
1400 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1401 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1402 | /* This line helps to fix Horsley's testbug.el bug. */ | |
8801a864 KR |
1403 | && !(WINDOWP (b->last_selected_window) |
1404 | && w != XWINDOW (b->last_selected_window) | |
719eaeb1 | 1405 | && EQ (buf, XWINDOW (b->last_selected_window)->buffer))) |
b73ea88e RS |
1406 | temp_set_point_both (b, |
1407 | clip_to_bounds (BUF_BEGV (b), | |
1408 | XMARKER (w->pointm)->charpos, | |
1409 | BUF_ZV (b)), | |
1410 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1411 | marker_byte_position (w->pointm), | |
1412 | BUF_ZV_BYTE (b))); | |
177c0ea7 | 1413 | |
8801a864 KR |
1414 | if (WINDOWP (b->last_selected_window) |
1415 | && w == XWINDOW (b->last_selected_window)) | |
719eaeb1 | 1416 | b->last_selected_window = Qnil; |
7ab12479 JB |
1417 | } |
1418 | ||
1419 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 1420 | static void |
7ab12479 JB |
1421 | replace_window (old, replacement) |
1422 | Lisp_Object old, replacement; | |
1423 | { | |
1424 | register Lisp_Object tem; | |
1425 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
1426 | ||
44fa5b1e JB |
1427 | /* If OLD is its frame's root_window, then replacement is the new |
1428 | root_window for that frame. */ | |
7ab12479 | 1429 | |
7f4161e0 | 1430 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 1431 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 | 1432 | |
949cf20f KS |
1433 | p->left_col = o->left_col; |
1434 | p->top_line = o->top_line; | |
1435 | p->total_cols = o->total_cols; | |
1436 | p->total_lines = o->total_lines; | |
5500c422 GM |
1437 | p->desired_matrix = p->current_matrix = 0; |
1438 | p->vscroll = 0; | |
1439 | bzero (&p->cursor, sizeof (p->cursor)); | |
1440 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
1441 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
1442 | p->phys_cursor_type = -1; | |
4b26579e | 1443 | p->phys_cursor_width = -1; |
5500c422 GM |
1444 | p->must_be_updated_p = 0; |
1445 | p->pseudo_window_p = 0; | |
1446 | XSETFASTINT (p->window_end_vpos, 0); | |
1447 | XSETFASTINT (p->window_end_pos, 0); | |
1448 | p->window_end_valid = Qnil; | |
7bbb5782 | 1449 | p->frozen_window_start_p = 0; |
949cf20f | 1450 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
1451 | |
1452 | p->next = tem = o->next; | |
265a9e55 | 1453 | if (!NILP (tem)) |
7ab12479 JB |
1454 | XWINDOW (tem)->prev = replacement; |
1455 | ||
1456 | p->prev = tem = o->prev; | |
265a9e55 | 1457 | if (!NILP (tem)) |
7ab12479 JB |
1458 | XWINDOW (tem)->next = replacement; |
1459 | ||
1460 | p->parent = tem = o->parent; | |
265a9e55 | 1461 | if (!NILP (tem)) |
7ab12479 JB |
1462 | { |
1463 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1464 | XWINDOW (tem)->vchild = replacement; | |
1465 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1466 | XWINDOW (tem)->hchild = replacement; | |
1467 | } | |
1468 | ||
1469 | /*** Here, if replacement is a vertical combination | |
1470 | and so is its new parent, we should make replacement's | |
1471 | children be children of that parent instead. ***/ | |
1472 | } | |
1473 | ||
1474 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
fdb82f93 PJ |
1475 | doc: /* Remove WINDOW from the display. Default is selected window. */) |
1476 | (window) | |
7ab12479 | 1477 | register Lisp_Object window; |
543f5fb1 RS |
1478 | { |
1479 | delete_window (window); | |
1480 | ||
1481 | if (! NILP (Vwindow_configuration_change_hook) | |
1482 | && ! NILP (Vrun_hooks)) | |
1483 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
1484 | ||
1485 | return Qnil; | |
1486 | } | |
1487 | ||
5e14b1fc | 1488 | void |
543f5fb1 RS |
1489 | delete_window (window) |
1490 | register Lisp_Object window; | |
7ab12479 JB |
1491 | { |
1492 | register Lisp_Object tem, parent, sib; | |
1493 | register struct window *p; | |
1494 | register struct window *par; | |
951f9df5 | 1495 | struct frame *f; |
7ab12479 | 1496 | |
605be8af JB |
1497 | /* Because this function is called by other C code on non-leaf |
1498 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1499 | so we can't decode_window here. */ | |
265a9e55 | 1500 | if (NILP (window)) |
7ab12479 JB |
1501 | window = selected_window; |
1502 | else | |
b7826503 | 1503 | CHECK_WINDOW (window); |
7ab12479 | 1504 | p = XWINDOW (window); |
605be8af | 1505 | |
0d384044 | 1506 | /* It's a no-op to delete an already-deleted window. */ |
605be8af JB |
1507 | if (NILP (p->buffer) |
1508 | && NILP (p->hchild) | |
1509 | && NILP (p->vchild)) | |
296b535c | 1510 | return; |
605be8af | 1511 | |
7ab12479 | 1512 | parent = p->parent; |
265a9e55 | 1513 | if (NILP (parent)) |
7ab12479 JB |
1514 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1515 | par = XWINDOW (parent); | |
1516 | ||
1517 | windows_or_buffers_changed++; | |
67492200 | 1518 | Vwindow_list = Qnil; |
951f9df5 GM |
1519 | f = XFRAME (WINDOW_FRAME (p)); |
1520 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
7ab12479 | 1521 | |
605be8af JB |
1522 | /* Are we trying to delete any frame's selected window? */ |
1523 | { | |
192c3131 | 1524 | Lisp_Object swindow, pwindow; |
605be8af | 1525 | |
0def0403 RS |
1526 | /* See if the frame's selected window is either WINDOW |
1527 | or any subwindow of it, by finding all that window's parents | |
1528 | and comparing each one with WINDOW. */ | |
192c3131 | 1529 | swindow = FRAME_SELECTED_WINDOW (f); |
0def0403 | 1530 | |
192c3131 | 1531 | while (1) |
0def0403 | 1532 | { |
192c3131 RS |
1533 | pwindow = swindow; |
1534 | while (!NILP (pwindow)) | |
1535 | { | |
1536 | if (EQ (window, pwindow)) | |
1537 | break; | |
1538 | pwindow = XWINDOW (pwindow)->parent; | |
1539 | } | |
1540 | ||
1541 | /* If the window being deleted is not a parent of SWINDOW, | |
1542 | then SWINDOW is ok as the new selected window. */ | |
1543 | if (!EQ (window, pwindow)) | |
0def0403 | 1544 | break; |
192c3131 | 1545 | /* Otherwise, try another window for SWINDOW. */ |
ba9798ab | 1546 | swindow = Fnext_window (swindow, Qlambda, Qnil); |
192c3131 RS |
1547 | |
1548 | /* If we get back to the frame's selected window, | |
1549 | it means there was no acceptable alternative, | |
1550 | so we cannot delete. */ | |
1551 | if (EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
1552 | error ("Cannot delete window"); | |
0def0403 RS |
1553 | } |
1554 | ||
192c3131 RS |
1555 | /* If we need to change SWINDOW, do it. */ |
1556 | if (! EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
605be8af | 1557 | { |
605be8af JB |
1558 | /* If we're about to delete the selected window on the |
1559 | selected frame, then we should use Fselect_window to select | |
1560 | the new window. On the other hand, if we're about to | |
1561 | delete the selected window on any other frame, we shouldn't do | |
1562 | anything but set the frame's selected_window slot. */ | |
192c3131 | 1563 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) |
14d87dc9 | 1564 | Fselect_window (swindow, Qnil); |
605be8af | 1565 | else |
192c3131 | 1566 | FRAME_SELECTED_WINDOW (f) = swindow; |
605be8af JB |
1567 | } |
1568 | } | |
7ab12479 | 1569 | |
0d384044 RS |
1570 | /* Now we know we can delete this one. */ |
1571 | window_deletion_count++; | |
1572 | ||
7ab12479 JB |
1573 | tem = p->buffer; |
1574 | /* tem is null for dummy parent windows | |
1575 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1576 | if (!NILP (tem)) |
7ab12479 JB |
1577 | { |
1578 | unshow_buffer (p); | |
2d0834cc SM |
1579 | unchain_marker (XMARKER (p->pointm)); |
1580 | unchain_marker (XMARKER (p->start)); | |
7ab12479 JB |
1581 | } |
1582 | ||
05e71564 GM |
1583 | /* Free window glyph matrices. It is sure that they are allocated |
1584 | again when ADJUST_GLYPHS is called. Block input so that expose | |
1585 | events and other events that access glyph matrices are not | |
1586 | processed while we are changing them. */ | |
1587 | BLOCK_INPUT; | |
951f9df5 | 1588 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f))); |
5500c422 | 1589 | |
7ab12479 | 1590 | tem = p->next; |
265a9e55 | 1591 | if (!NILP (tem)) |
7ab12479 JB |
1592 | XWINDOW (tem)->prev = p->prev; |
1593 | ||
1594 | tem = p->prev; | |
265a9e55 | 1595 | if (!NILP (tem)) |
7ab12479 JB |
1596 | XWINDOW (tem)->next = p->next; |
1597 | ||
1598 | if (EQ (window, par->hchild)) | |
1599 | par->hchild = p->next; | |
1600 | if (EQ (window, par->vchild)) | |
1601 | par->vchild = p->next; | |
1602 | ||
1603 | /* Find one of our siblings to give our space to. */ | |
1604 | sib = p->prev; | |
265a9e55 | 1605 | if (NILP (sib)) |
7ab12479 JB |
1606 | { |
1607 | /* If p gives its space to its next sibling, that sibling needs | |
1608 | to have its top/left side pulled back to where p's is. | |
1609 | set_window_{height,width} will re-position the sibling's | |
1610 | children. */ | |
1611 | sib = p->next; | |
949cf20f KS |
1612 | XWINDOW (sib)->top_line = p->top_line; |
1613 | XWINDOW (sib)->left_col = p->left_col; | |
7ab12479 JB |
1614 | } |
1615 | ||
1616 | /* Stretch that sibling. */ | |
265a9e55 | 1617 | if (!NILP (par->vchild)) |
7ab12479 | 1618 | set_window_height (sib, |
949cf20f | 1619 | XFASTINT (XWINDOW (sib)->total_lines) + XFASTINT (p->total_lines), |
7ab12479 | 1620 | 1); |
265a9e55 | 1621 | if (!NILP (par->hchild)) |
7ab12479 | 1622 | set_window_width (sib, |
949cf20f | 1623 | XFASTINT (XWINDOW (sib)->total_cols) + XFASTINT (p->total_cols), |
7ab12479 JB |
1624 | 1); |
1625 | ||
1626 | /* If parent now has only one child, | |
1627 | put the child into the parent's place. */ | |
7ab12479 | 1628 | tem = par->hchild; |
265a9e55 | 1629 | if (NILP (tem)) |
7ab12479 | 1630 | tem = par->vchild; |
5494d7bc | 1631 | if (NILP (XWINDOW (tem)->next)) { |
7ab12479 | 1632 | replace_window (parent, tem); |
5494d7bc JD |
1633 | par = XWINDOW (tem); |
1634 | } | |
605be8af JB |
1635 | |
1636 | /* Since we may be deleting combination windows, we must make sure that | |
1637 | not only p but all its children have been marked as deleted. */ | |
1638 | if (! NILP (p->hchild)) | |
1639 | delete_all_subwindows (XWINDOW (p->hchild)); | |
1640 | else if (! NILP (p->vchild)) | |
1641 | delete_all_subwindows (XWINDOW (p->vchild)); | |
1642 | ||
1643 | /* Mark this window as deleted. */ | |
1644 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 | 1645 | |
5494d7bc JD |
1646 | if (! NILP (par->parent)) |
1647 | par = XWINDOW (par->parent); | |
1648 | ||
1649 | /* Check if we have a v/hchild with a v/hchild. In that case remove | |
1650 | one of them. */ | |
ae12ecd7 | 1651 | |
5494d7bc JD |
1652 | if (! NILP (par->vchild) && ! NILP (XWINDOW (par->vchild)->vchild)) |
1653 | { | |
1654 | p = XWINDOW (par->vchild); | |
1655 | par->vchild = p->vchild; | |
1656 | tem = p->vchild; | |
1657 | } | |
1658 | else if (! NILP (par->hchild) && ! NILP (XWINDOW (par->hchild)->hchild)) | |
1659 | { | |
1660 | p = XWINDOW (par->hchild); | |
1661 | par->hchild = p->hchild; | |
1662 | tem = p->hchild; | |
1663 | } | |
1664 | else | |
1665 | p = 0; | |
1666 | ||
1667 | if (p) | |
1668 | { | |
1669 | while (! NILP (tem)) { | |
1670 | XWINDOW (tem)->parent = p->parent; | |
1671 | if (NILP (XWINDOW (tem)->next)) | |
1672 | break; | |
1673 | tem = XWINDOW (tem)->next; | |
1674 | } | |
1675 | if (! NILP (tem)) { | |
1676 | /* The next of the v/hchild we are removing is now the next of the | |
1677 | last child for the v/hchild: | |
1678 | Before v/hchild -> v/hchild -> next1 -> next2 | |
1679 | | | |
1680 | -> next3 | |
1681 | After: v/hchild -> next1 -> next2 -> next3 | |
1682 | */ | |
1683 | XWINDOW (tem)->next = p->next; | |
1684 | if (! NILP (p->next)) | |
1685 | XWINDOW (p->next)->prev = tem; | |
1686 | } | |
1687 | p->next = p->prev = p->vchild = p->hchild = p->buffer = Qnil; | |
1688 | } | |
1689 | ||
1690 | ||
5500c422 | 1691 | /* Adjust glyph matrices. */ |
951f9df5 | 1692 | adjust_glyphs (f); |
05e71564 | 1693 | UNBLOCK_INPUT; |
7ab12479 | 1694 | } |
67492200 GM |
1695 | |
1696 | ||
7ab12479 | 1697 | \f |
67492200 GM |
1698 | /*********************************************************************** |
1699 | Window List | |
1700 | ***********************************************************************/ | |
1701 | ||
f95464e4 GM |
1702 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1703 | pointer. This is a callback function for foreach_window, used in | |
1704 | function window_list. */ | |
67492200 GM |
1705 | |
1706 | static int | |
f95464e4 | 1707 | add_window_to_list (w, user_data) |
67492200 | 1708 | struct window *w; |
f95464e4 | 1709 | void *user_data; |
67492200 | 1710 | { |
f95464e4 | 1711 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1712 | Lisp_Object window; |
1713 | XSETWINDOW (window, w); | |
212116d6 | 1714 | *list = Fcons (window, *list); |
67492200 GM |
1715 | return 1; |
1716 | } | |
1717 | ||
1718 | ||
1719 | /* Return a list of all windows, for use by next_window. If | |
1720 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1721 | list, cache it in Vwindow_list, and return that. */ | |
1722 | ||
1723 | static Lisp_Object | |
1724 | window_list () | |
1725 | { | |
1726 | if (!CONSP (Vwindow_list)) | |
1727 | { | |
1728 | Lisp_Object tail; | |
212116d6 | 1729 | |
67492200 GM |
1730 | Vwindow_list = Qnil; |
1731 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1732 | { |
1733 | Lisp_Object args[2]; | |
1734 | ||
1735 | /* We are visiting windows in canonical order, and add | |
1736 | new windows at the front of args[1], which means we | |
1737 | have to reverse this list at the end. */ | |
1738 | args[1] = Qnil; | |
1739 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
1740 | args[0] = Vwindow_list; | |
1741 | args[1] = Fnreverse (args[1]); | |
1742 | Vwindow_list = Fnconc (2, args); | |
1743 | } | |
67492200 | 1744 | } |
177c0ea7 | 1745 | |
67492200 GM |
1746 | return Vwindow_list; |
1747 | } | |
1748 | ||
1749 | ||
118ea242 GM |
1750 | /* Value is non-zero if WINDOW satisfies the constraints given by |
1751 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 1752 | |
118ea242 GM |
1753 | MINIBUF t means WINDOW may be minibuffer windows. |
1754 | `lambda' means WINDOW may not be a minibuffer window. | |
1755 | a window means a specific minibuffer window | |
67492200 | 1756 | |
118ea242 GM |
1757 | ALL_FRAMES t means search all frames, |
1758 | nil means search just current frame, | |
1759 | `visible' means search just visible frames, | |
1760 | 0 means search visible and iconified frames, | |
1761 | a window means search the frame that window belongs to, | |
1762 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
1763 | |
1764 | static int | |
118ea242 GM |
1765 | candidate_window_p (window, owindow, minibuf, all_frames) |
1766 | Lisp_Object window, owindow, minibuf, all_frames; | |
67492200 GM |
1767 | { |
1768 | struct window *w = XWINDOW (window); | |
1769 | struct frame *f = XFRAME (w->frame); | |
1770 | int candidate_p = 1; | |
1771 | ||
1772 | if (!BUFFERP (w->buffer)) | |
1773 | candidate_p = 0; | |
1774 | else if (MINI_WINDOW_P (w) | |
1775 | && (EQ (minibuf, Qlambda) | |
1776 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
1777 | { | |
1778 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
1779 | If it is a window, consider only that one. */ | |
1780 | candidate_p = 0; | |
1781 | } | |
118ea242 GM |
1782 | else if (EQ (all_frames, Qt)) |
1783 | candidate_p = 1; | |
67492200 | 1784 | else if (NILP (all_frames)) |
118ea242 GM |
1785 | { |
1786 | xassert (WINDOWP (owindow)); | |
1787 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
1788 | } | |
67492200 GM |
1789 | else if (EQ (all_frames, Qvisible)) |
1790 | { | |
1791 | FRAME_SAMPLE_VISIBILITY (f); | |
1792 | candidate_p = FRAME_VISIBLE_P (f); | |
1793 | } | |
1794 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
1795 | { | |
1796 | FRAME_SAMPLE_VISIBILITY (f); | |
1797 | candidate_p = FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f); | |
1798 | } | |
67492200 GM |
1799 | else if (WINDOWP (all_frames)) |
1800 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
1801 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
1802 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
1803 | else if (FRAMEP (all_frames)) |
1804 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
1805 | |
1806 | return candidate_p; | |
1807 | } | |
1808 | ||
1809 | ||
1810 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
1811 | Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and | |
1812 | ALL_FRAMES. */ | |
1813 | ||
1814 | static void | |
1815 | decode_next_window_args (window, minibuf, all_frames) | |
1816 | Lisp_Object *window, *minibuf, *all_frames; | |
1817 | { | |
1818 | if (NILP (*window)) | |
1819 | *window = selected_window; | |
1820 | else | |
b7826503 | 1821 | CHECK_LIVE_WINDOW (*window); |
177c0ea7 | 1822 | |
67492200 GM |
1823 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
1824 | does. */ | |
1825 | if (NILP (*minibuf)) | |
1826 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
1827 | else if (!EQ (*minibuf, Qt)) | |
1828 | *minibuf = Qlambda; | |
177c0ea7 | 1829 | |
67492200 GM |
1830 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
1831 | => count none of them, or a specific minibuffer window (the | |
1832 | active one) to count. */ | |
1833 | ||
1834 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
1835 | if (NILP (*all_frames)) | |
1836 | *all_frames = (!EQ (*minibuf, Qlambda) | |
1837 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
1838 | : Qnil); | |
1839 | else if (EQ (*all_frames, Qvisible)) | |
1840 | ; | |
0f8fe9a2 | 1841 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
1842 | ; |
1843 | else if (FRAMEP (*all_frames)) | |
1844 | ; | |
1845 | else if (!EQ (*all_frames, Qt)) | |
1846 | *all_frames = Qnil; | |
177c0ea7 | 1847 | |
67492200 GM |
1848 | /* Now *ALL_FRAMES is t meaning search all frames, nil meaning |
1849 | search just current frame, `visible' meaning search just visible | |
1850 | frames, 0 meaning search visible and iconified frames, or a | |
1851 | window, meaning search the frame that window belongs to, or a | |
1852 | frame, meaning consider windows on that frame, only. */ | |
1853 | } | |
1854 | ||
1855 | ||
1856 | /* Return the next or previous window of WINDOW in canonical ordering | |
1857 | of windows. NEXT_P non-zero means return the next window. See the | |
1858 | documentation string of next-window for the meaning of MINIBUF and | |
1859 | ALL_FRAMES. */ | |
1860 | ||
1861 | static Lisp_Object | |
1862 | next_window (window, minibuf, all_frames, next_p) | |
1863 | Lisp_Object window, minibuf, all_frames; | |
1864 | int next_p; | |
1865 | { | |
1866 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 1867 | |
67492200 GM |
1868 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
1869 | return the first window on the frame. */ | |
1870 | if (FRAMEP (all_frames) | |
1871 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
1872 | return Fframe_first_window (all_frames); | |
177c0ea7 | 1873 | |
212116d6 | 1874 | if (next_p) |
67492200 GM |
1875 | { |
1876 | Lisp_Object list; | |
177c0ea7 | 1877 | |
67492200 GM |
1878 | /* Find WINDOW in the list of all windows. */ |
1879 | list = Fmemq (window, window_list ()); | |
1880 | ||
1881 | /* Scan forward from WINDOW to the end of the window list. */ | |
1882 | if (CONSP (list)) | |
1883 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 1884 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1885 | break; |
1886 | ||
1887 | /* Scan from the start of the window list up to WINDOW. */ | |
1888 | if (!CONSP (list)) | |
1889 | for (list = Vwindow_list; | |
1890 | CONSP (list) && !EQ (XCAR (list), window); | |
1891 | list = XCDR (list)) | |
118ea242 | 1892 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1893 | break; |
1894 | ||
1895 | if (CONSP (list)) | |
1896 | window = XCAR (list); | |
1897 | } | |
1898 | else | |
1899 | { | |
1900 | Lisp_Object candidate, list; | |
177c0ea7 | 1901 | |
67492200 GM |
1902 | /* Scan through the list of windows for candidates. If there are |
1903 | candidate windows in front of WINDOW, the last one of these | |
1904 | is the one we want. If there are candidates following WINDOW | |
1905 | in the list, again the last one of these is the one we want. */ | |
1906 | candidate = Qnil; | |
1907 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
1908 | { | |
1909 | if (EQ (XCAR (list), window)) | |
1910 | { | |
1911 | if (WINDOWP (candidate)) | |
1912 | break; | |
1913 | } | |
118ea242 GM |
1914 | else if (candidate_window_p (XCAR (list), window, minibuf, |
1915 | all_frames)) | |
67492200 GM |
1916 | candidate = XCAR (list); |
1917 | } | |
1918 | ||
1919 | if (WINDOWP (candidate)) | |
1920 | window = candidate; | |
1921 | } | |
1922 | ||
1923 | return window; | |
1924 | } | |
7ab12479 | 1925 | |
7ab12479 | 1926 | |
26f6279d | 1927 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
fdb82f93 PJ |
1928 | doc: /* Return next window after WINDOW in canonical ordering of windows. |
1929 | If omitted, WINDOW defaults to the selected window. | |
1930 | ||
1931 | Optional second arg MINIBUF t means count the minibuffer window even | |
1932 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1933 | it is active. MINIBUF neither t nor nil means not to count the | |
1934 | minibuffer even if it is active. | |
1935 | ||
1936 | Several frames may share a single minibuffer; if the minibuffer | |
1937 | counts, all windows on all frames that share that minibuffer count | |
1938 | too. Therefore, `next-window' can be used to iterate through the | |
1939 | set of windows even when the minibuffer is on another frame. If the | |
1940 | minibuffer does not count, only windows from WINDOW's frame count. | |
1941 | ||
1942 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1943 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1944 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1945 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1946 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1947 | Anything else means restrict to WINDOW's frame. | |
1948 | ||
1949 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1950 | `next-window' to iterate through the entire cycle of acceptable | |
1951 | windows, eventually ending up back at the window you started with. | |
1952 | `previous-window' traverses the same cycle, in the reverse order. */) | |
1953 | (window, minibuf, all_frames) | |
67492200 | 1954 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1955 | { |
67492200 | 1956 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
1957 | } |
1958 | ||
67492200 | 1959 | |
26f6279d | 1960 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
fdb82f93 PJ |
1961 | doc: /* Return the window preceding WINDOW in canonical ordering of windows. |
1962 | If omitted, WINDOW defaults to the selected window. | |
1963 | ||
1964 | Optional second arg MINIBUF t means count the minibuffer window even | |
1965 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1966 | it is active. MINIBUF neither t nor nil means not to count the | |
1967 | minibuffer even if it is active. | |
1968 | ||
1969 | Several frames may share a single minibuffer; if the minibuffer | |
1970 | counts, all windows on all frames that share that minibuffer count | |
1971 | too. Therefore, `previous-window' can be used to iterate through | |
1972 | the set of windows even when the minibuffer is on another frame. If | |
1973 | the minibuffer does not count, only windows from WINDOW's frame count | |
1974 | ||
1975 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1976 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1977 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1978 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1979 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1980 | Anything else means restrict to WINDOW's frame. | |
1981 | ||
1982 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1983 | `previous-window' to iterate through the entire cycle of acceptable | |
1984 | windows, eventually ending up back at the window you started with. | |
1985 | `next-window' traverses the same cycle, in the reverse order. */) | |
1986 | (window, minibuf, all_frames) | |
67492200 | 1987 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1988 | { |
67492200 | 1989 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
1990 | } |
1991 | ||
67492200 | 1992 | |
62c07cc7 | 1993 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
fdb82f93 PJ |
1994 | doc: /* Select the ARG'th different window on this frame. |
1995 | All windows on current frame are arranged in a cyclic order. | |
1996 | This command selects the window ARG steps away in that order. | |
c2755926 | 1997 | A negative ARG moves in the opposite order. The optional second |
8cd0d661 | 1998 | argument ALL-FRAMES has the same meaning as in `next-window', which see. */) |
fdb82f93 | 1999 | (arg, all_frames) |
67492200 | 2000 | Lisp_Object arg, all_frames; |
7ab12479 | 2001 | { |
67492200 GM |
2002 | Lisp_Object window; |
2003 | int i; | |
7ab12479 | 2004 | |
b7826503 | 2005 | CHECK_NUMBER (arg); |
67492200 | 2006 | window = selected_window; |
177c0ea7 | 2007 | |
67492200 GM |
2008 | for (i = XINT (arg); i > 0; --i) |
2009 | window = Fnext_window (window, Qnil, all_frames); | |
2010 | for (; i < 0; ++i) | |
2011 | window = Fprevious_window (window, Qnil, all_frames); | |
50e88778 | 2012 | |
14d87dc9 | 2013 | Fselect_window (window, Qnil); |
7ab12479 JB |
2014 | return Qnil; |
2015 | } | |
67492200 GM |
2016 | |
2017 | ||
2018 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, | |
fdb82f93 PJ |
2019 | doc: /* Return a list of windows on FRAME, starting with WINDOW. |
2020 | FRAME nil or omitted means use the selected frame. | |
2021 | WINDOW nil or omitted means use the selected window. | |
2022 | MINIBUF t means include the minibuffer window, even if it isn't active. | |
2023 | MINIBUF nil or omitted means include the minibuffer window only | |
2024 | if it's active. | |
2025 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2026 | (frame, minibuf, window) | |
cd2904bd GM |
2027 | Lisp_Object frame, minibuf, window; |
2028 | { | |
cd2904bd | 2029 | if (NILP (window)) |
acc6289a SM |
2030 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
2031 | CHECK_WINDOW (window); | |
cd2904bd GM |
2032 | if (NILP (frame)) |
2033 | frame = selected_frame; | |
2034 | ||
2035 | if (!EQ (frame, XWINDOW (window)->frame)) | |
2036 | error ("Window is on a different frame"); | |
2037 | ||
2038 | return window_list_1 (window, minibuf, frame); | |
2039 | } | |
2040 | ||
2041 | ||
2042 | /* Return a list of windows in canonical ordering. Arguments are like | |
2043 | for `next-window'. */ | |
2044 | ||
2045 | static Lisp_Object | |
2046 | window_list_1 (window, minibuf, all_frames) | |
069f5950 | 2047 | Lisp_Object window, minibuf, all_frames; |
67492200 | 2048 | { |
403de3b4 | 2049 | Lisp_Object tail, list, rest; |
67492200 GM |
2050 | |
2051 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2052 | list = Qnil; | |
177c0ea7 | 2053 | |
67492200 | 2054 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2055 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2056 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2057 | |
403de3b4 RS |
2058 | /* Rotate the list to start with WINDOW. */ |
2059 | list = Fnreverse (list); | |
2060 | rest = Fmemq (window, list); | |
2061 | if (!NILP (rest) && !EQ (rest, list)) | |
2062 | { | |
1725a7c9 | 2063 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2064 | ; |
2065 | XSETCDR (tail, Qnil); | |
2066 | list = nconc2 (rest, list); | |
2067 | } | |
2068 | return list; | |
67492200 GM |
2069 | } |
2070 | ||
2071 | ||
7ab12479 JB |
2072 | \f |
2073 | /* Look at all windows, performing an operation specified by TYPE | |
2074 | with argument OBJ. | |
75d8f668 | 2075 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2076 | Qnil, look at just the selected frame; |
89bca612 | 2077 | Qvisible, look at visible frames; |
75d8f668 | 2078 | a frame, just look at windows on that frame. |
85fe3b5e | 2079 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2080 | |
2081 | enum window_loop | |
2082 | { | |
2083 | WINDOW_LOOP_UNUSED, | |
2084 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
2085 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
2086 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
2087 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
2088 | GET_LARGEST_WINDOW, | |
3f8ab7bd | 2089 | UNSHOW_BUFFER, /* Arg is buffer */ |
e661376d | 2090 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ |
3f8ab7bd | 2091 | CHECK_ALL_WINDOWS |
7ab12479 JB |
2092 | }; |
2093 | ||
2094 | static Lisp_Object | |
44fa5b1e | 2095 | window_loop (type, obj, mini, frames) |
7ab12479 | 2096 | enum window_loop type; |
118ea242 | 2097 | Lisp_Object obj, frames; |
7ab12479 JB |
2098 | int mini; |
2099 | { | |
118ea242 GM |
2100 | Lisp_Object window, windows, best_window, frame_arg; |
2101 | struct frame *f; | |
ffdc852d | 2102 | struct gcpro gcpro1; |
177c0ea7 | 2103 | |
44fa5b1e JB |
2104 | /* If we're only looping through windows on a particular frame, |
2105 | frame points to that frame. If we're looping through windows | |
2106 | on all frames, frame is 0. */ | |
2107 | if (FRAMEP (frames)) | |
118ea242 | 2108 | f = XFRAME (frames); |
44fa5b1e | 2109 | else if (NILP (frames)) |
118ea242 | 2110 | f = SELECTED_FRAME (); |
7ab12479 | 2111 | else |
118ea242 | 2112 | f = NULL; |
177c0ea7 | 2113 | |
118ea242 | 2114 | if (f) |
89bca612 | 2115 | frame_arg = Qlambda; |
0f8fe9a2 | 2116 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2117 | frame_arg = frames; |
89bca612 RS |
2118 | else if (EQ (frames, Qvisible)) |
2119 | frame_arg = frames; | |
118ea242 GM |
2120 | else |
2121 | frame_arg = Qt; | |
7ab12479 | 2122 | |
89bca612 RS |
2123 | /* frame_arg is Qlambda to stick to one frame, |
2124 | Qvisible to consider all visible frames, | |
2125 | or Qt otherwise. */ | |
2126 | ||
7ab12479 | 2127 | /* Pick a window to start with. */ |
017b2bad | 2128 | if (WINDOWP (obj)) |
118ea242 GM |
2129 | window = obj; |
2130 | else if (f) | |
2131 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2132 | else |
118ea242 | 2133 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2134 | |
cd2904bd | 2135 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2136 | GCPRO1 (windows); |
7ab12479 | 2137 | best_window = Qnil; |
118ea242 | 2138 | |
e67a1dea | 2139 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2140 | { |
118ea242 | 2141 | struct window *w; |
177c0ea7 | 2142 | |
118ea242 GM |
2143 | window = XCAR (windows); |
2144 | w = XWINDOW (window); | |
177c0ea7 | 2145 | |
118ea242 GM |
2146 | /* Note that we do not pay attention here to whether the frame |
2147 | is visible, since Fwindow_list skips non-visible frames if | |
2148 | that is desired, under the control of frame_arg. */ | |
2149 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
2150 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
2151 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
2152 | || (mini && minibuf_level > 0)) |
2153 | switch (type) | |
2154 | { | |
2155 | case GET_BUFFER_WINDOW: | |
118ea242 | 2156 | if (EQ (w->buffer, obj) |
5c204627 RS |
2157 | /* Don't find any minibuffer window |
2158 | except the one that is currently in use. */ | |
118ea242 GM |
2159 | && (MINI_WINDOW_P (w) |
2160 | ? EQ (window, minibuf_window) | |
2161 | : 1)) | |
2162 | { | |
5ddc1b75 GM |
2163 | if (NILP (best_window)) |
2164 | best_window = window; | |
2165 | else if (EQ (window, selected_window)) | |
2166 | /* For compatibility with 20.x, prefer to return | |
2167 | selected-window. */ | |
2168 | best_window = window; | |
118ea242 | 2169 | } |
7ab12479 JB |
2170 | break; |
2171 | ||
2172 | case GET_LRU_WINDOW: | |
20b69789 SM |
2173 | /* `obj' is an integer encoding a bitvector. |
2174 | `obj & 1' means consider only full-width windows. | |
2175 | `obj & 2' means consider also dedicated windows. */ | |
2176 | if (((XINT (obj) & 1) && !WINDOW_FULL_WIDTH_P (w)) | |
3f489dc7 | 2177 | || (!(XINT (obj) & 2) && !NILP (w->dedicated)) |
20b69789 SM |
2178 | /* Minibuffer windows are always ignored. */ |
2179 | || MINI_WINDOW_P (w)) | |
7ab12479 | 2180 | break; |
265a9e55 | 2181 | if (NILP (best_window) |
7ab12479 | 2182 | || (XFASTINT (XWINDOW (best_window)->use_time) |
118ea242 GM |
2183 | > XFASTINT (w->use_time))) |
2184 | best_window = window; | |
7ab12479 JB |
2185 | break; |
2186 | ||
2187 | case DELETE_OTHER_WINDOWS: | |
118ea242 GM |
2188 | if (!EQ (window, obj)) |
2189 | Fdelete_window (window); | |
7ab12479 JB |
2190 | break; |
2191 | ||
2192 | case DELETE_BUFFER_WINDOWS: | |
118ea242 | 2193 | if (EQ (w->buffer, obj)) |
7ab12479 | 2194 | { |
118ea242 | 2195 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
3548e138 RS |
2196 | |
2197 | /* If this window is dedicated, and in a frame of its own, | |
2198 | kill the frame. */ | |
118ea242 GM |
2199 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2200 | && !NILP (w->dedicated) | |
3548e138 | 2201 | && other_visible_frames (f)) |
7ab12479 | 2202 | { |
3548e138 RS |
2203 | /* Skip the other windows on this frame. |
2204 | There might be one, the minibuffer! */ | |
118ea242 GM |
2205 | while (CONSP (XCDR (windows)) |
2206 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2207 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2208 | windows = XCDR (windows); | |
177c0ea7 | 2209 | |
3548e138 | 2210 | /* Now we can safely delete the frame. */ |
118ea242 GM |
2211 | Fdelete_frame (w->frame, Qnil); |
2212 | } | |
2213 | else if (NILP (w->parent)) | |
2214 | { | |
2215 | /* If we're deleting the buffer displayed in the | |
2216 | only window on the frame, find a new buffer to | |
2217 | display there. */ | |
2218 | Lisp_Object buffer; | |
2219 | buffer = Fother_buffer (obj, Qnil, w->frame); | |
949cf20f | 2220 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2221 | if (EQ (window, selected_window)) |
2222 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2223 | } |
2224 | else | |
118ea242 | 2225 | Fdelete_window (window); |
7ab12479 JB |
2226 | } |
2227 | break; | |
2228 | ||
2229 | case GET_LARGEST_WINDOW: | |
20b69789 | 2230 | { /* nil `obj' means to ignore dedicated windows. */ |
118ea242 | 2231 | /* Ignore dedicated windows and minibuffers. */ |
3f489dc7 | 2232 | if (MINI_WINDOW_P (w) || (NILP (obj) && !NILP (w->dedicated))) |
118ea242 | 2233 | break; |
177c0ea7 | 2234 | |
c930dfab | 2235 | if (NILP (best_window)) |
118ea242 | 2236 | best_window = window; |
c930dfab GM |
2237 | else |
2238 | { | |
2239 | struct window *b = XWINDOW (best_window); | |
949cf20f KS |
2240 | if (XFASTINT (w->total_lines) * XFASTINT (w->total_cols) |
2241 | > XFASTINT (b->total_lines) * XFASTINT (b->total_cols)) | |
c930dfab GM |
2242 | best_window = window; |
2243 | } | |
7ab12479 JB |
2244 | } |
2245 | break; | |
2246 | ||
2247 | case UNSHOW_BUFFER: | |
118ea242 | 2248 | if (EQ (w->buffer, obj)) |
7ab12479 | 2249 | { |
118ea242 GM |
2250 | Lisp_Object buffer; |
2251 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 2252 | |
7ab12479 | 2253 | /* Find another buffer to show in this window. */ |
118ea242 | 2254 | buffer = Fother_buffer (obj, Qnil, w->frame); |
177c0ea7 | 2255 | |
38ab08d1 RS |
2256 | /* If this window is dedicated, and in a frame of its own, |
2257 | kill the frame. */ | |
118ea242 GM |
2258 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2259 | && !NILP (w->dedicated) | |
38ab08d1 | 2260 | && other_visible_frames (f)) |
45945a7b RS |
2261 | { |
2262 | /* Skip the other windows on this frame. | |
2263 | There might be one, the minibuffer! */ | |
118ea242 GM |
2264 | while (CONSP (XCDR (windows)) |
2265 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2266 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2267 | windows = XCDR (windows); | |
177c0ea7 | 2268 | |
45945a7b | 2269 | /* Now we can safely delete the frame. */ |
118ea242 | 2270 | Fdelete_frame (w->frame, Qnil); |
45945a7b | 2271 | } |
a5731348 SM |
2272 | else if (!NILP (w->dedicated) && !NILP (w->parent)) |
2273 | { | |
2274 | Lisp_Object window; | |
2275 | XSETWINDOW (window, w); | |
2276 | /* If this window is dedicated and not the only window | |
2277 | in its frame, then kill it. */ | |
2278 | Fdelete_window (window); | |
2279 | } | |
38ab08d1 | 2280 | else |
38ab08d1 RS |
2281 | { |
2282 | /* Otherwise show a different buffer in the window. */ | |
118ea242 | 2283 | w->dedicated = Qnil; |
949cf20f | 2284 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2285 | if (EQ (window, selected_window)) |
2286 | Fset_buffer (w->buffer); | |
38ab08d1 | 2287 | } |
7ab12479 JB |
2288 | } |
2289 | break; | |
3f8ab7bd | 2290 | |
e661376d KS |
2291 | case REDISPLAY_BUFFER_WINDOWS: |
2292 | if (EQ (w->buffer, obj)) | |
2293 | { | |
2294 | mark_window_display_accurate (window, 0); | |
40c6ee74 KS |
2295 | w->update_mode_line = Qt; |
2296 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; | |
2297 | ++update_mode_lines; | |
e661376d KS |
2298 | best_window = window; |
2299 | } | |
2300 | break; | |
2301 | ||
3f8ab7bd RS |
2302 | /* Check for a window that has a killed buffer. */ |
2303 | case CHECK_ALL_WINDOWS: | |
118ea242 GM |
2304 | if (! NILP (w->buffer) |
2305 | && NILP (XBUFFER (w->buffer)->name)) | |
3f8ab7bd | 2306 | abort (); |
118ea242 | 2307 | break; |
6bbd7a29 GM |
2308 | |
2309 | case WINDOW_LOOP_UNUSED: | |
2310 | break; | |
7ab12479 | 2311 | } |
7ab12479 | 2312 | } |
7ab12479 | 2313 | |
118ea242 | 2314 | UNGCPRO; |
7ab12479 | 2315 | return best_window; |
37962e60 | 2316 | } |
605be8af | 2317 | |
3f8ab7bd RS |
2318 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2319 | ||
233a4a2c | 2320 | void |
3f8ab7bd RS |
2321 | check_all_windows () |
2322 | { | |
2323 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2324 | } | |
2325 | ||
3cbb13c8 | 2326 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 2, 0, |
fdb82f93 | 2327 | doc: /* Return the window least recently selected or used for display. |
a55ca73c EZ |
2328 | \(LRU means Least Recently Used.) |
2329 | ||
a899216f | 2330 | Return a full-width window if possible. |
c2755926 | 2331 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2332 | A dedicated window is never a candidate, unless DEDICATED is non-nil, |
2333 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2334 | If optional argument FRAME is `visible', search all visible frames. |
2335 | If FRAME is 0, search all visible and iconified frames. | |
2336 | If FRAME is t, search all frames. | |
2337 | If FRAME is nil, search only the selected frame. | |
2338 | If FRAME is a frame, search only that frame. */) | |
3cbb13c8 SM |
2339 | (frame, dedicated) |
2340 | Lisp_Object frame, dedicated; | |
7ab12479 JB |
2341 | { |
2342 | register Lisp_Object w; | |
2343 | /* First try for a window that is full-width */ | |
20b69789 SM |
2344 | w = window_loop (GET_LRU_WINDOW, |
2345 | NILP (dedicated) ? make_number (1) : make_number (3), | |
2346 | 0, frame); | |
265a9e55 | 2347 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
2348 | return w; |
2349 | /* If none of them, try the rest */ | |
20b69789 SM |
2350 | return window_loop (GET_LRU_WINDOW, |
2351 | NILP (dedicated) ? make_number (0) : make_number (2), | |
2352 | 0, frame); | |
7ab12479 JB |
2353 | } |
2354 | ||
3cbb13c8 | 2355 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 2, 0, |
fdb82f93 | 2356 | doc: /* Return the largest window in area. |
c2755926 | 2357 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2358 | A dedicated window is never a candidate unless DEDICATED is non-nil, |
2359 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2360 | If optional argument FRAME is `visible', search all visible frames. |
2361 | If FRAME is 0, search all visible and iconified frames. | |
2362 | If FRAME is t, search all frames. | |
2363 | If FRAME is nil, search only the selected frame. | |
2364 | If FRAME is a frame, search only that frame. */) | |
3cbb13c8 SM |
2365 | (frame, dedicated) |
2366 | Lisp_Object frame, dedicated; | |
7ab12479 | 2367 | { |
20b69789 | 2368 | return window_loop (GET_LARGEST_WINDOW, dedicated, 0, |
44fa5b1e | 2369 | frame); |
7ab12479 JB |
2370 | } |
2371 | ||
2372 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
fdb82f93 | 2373 | doc: /* Return a window currently displaying BUFFER, or nil if none. |
c2755926 | 2374 | BUFFER can be a buffer or a buffer name. |
fdb82f93 PJ |
2375 | If optional argument FRAME is `visible', search all visible frames. |
2376 | If optional argument FRAME is 0, search all visible and iconified frames. | |
2377 | If FRAME is t, search all frames. | |
2378 | If FRAME is nil, search only the selected frame. | |
2379 | If FRAME is a frame, search only that frame. */) | |
2380 | (buffer, frame) | |
2381 | Lisp_Object buffer, frame; | |
7ab12479 JB |
2382 | { |
2383 | buffer = Fget_buffer (buffer); | |
017b2bad | 2384 | if (BUFFERP (buffer)) |
44fa5b1e | 2385 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
2386 | else |
2387 | return Qnil; | |
2388 | } | |
2389 | ||
2390 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
fdb82f93 PJ |
2391 | 0, 1, "", |
2392 | doc: /* Make WINDOW (or the selected window) fill its frame. | |
2393 | Only the frame WINDOW is on is affected. | |
2394 | This function tries to reduce display jumps | |
2395 | by keeping the text previously visible in WINDOW | |
2396 | in the same place on the frame. Doing this depends on | |
2397 | the value of (window-start WINDOW), so if calling this function | |
2398 | in a program gives strange scrolling, make sure the window-start | |
2399 | value is reasonable when this function is called. */) | |
2400 | (window) | |
7ab12479 JB |
2401 | Lisp_Object window; |
2402 | { | |
2403 | struct window *w; | |
00d3d838 | 2404 | int startpos; |
85fe3b5e | 2405 | int top, new_top; |
7ab12479 | 2406 | |
265a9e55 | 2407 | if (NILP (window)) |
7ab12479 JB |
2408 | window = selected_window; |
2409 | else | |
b7826503 | 2410 | CHECK_LIVE_WINDOW (window); |
7ab12479 | 2411 | w = XWINDOW (window); |
a2b38b3c | 2412 | |
00d3d838 | 2413 | startpos = marker_position (w->start); |
949cf20f | 2414 | top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 2415 | |
a2b38b3c RS |
2416 | if (MINI_WINDOW_P (w) && top > 0) |
2417 | error ("Can't expand minibuffer to full frame"); | |
2418 | ||
70728a80 | 2419 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 2420 | |
00d3d838 KH |
2421 | /* Try to minimize scrolling, by setting the window start to the point |
2422 | will cause the text at the old window start to be at the same place | |
2423 | on the frame. But don't try to do this if the window start is | |
2424 | outside the visible portion (as might happen when the display is | |
2425 | not current, due to typeahead). */ | |
949cf20f | 2426 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
85fe3b5e GM |
2427 | if (new_top != top |
2428 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
00d3d838 KH |
2429 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) |
2430 | { | |
2431 | struct position pos; | |
2432 | struct buffer *obuf = current_buffer; | |
2433 | ||
2434 | Fset_buffer (w->buffer); | |
2435 | /* This computation used to temporarily move point, but that can | |
2436 | have unwanted side effects due to text properties. */ | |
0383eb57 | 2437 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 2438 | |
b73ea88e | 2439 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
85fe3b5e | 2440 | w->window_end_valid = Qnil; |
b73ea88e RS |
2441 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE |
2442 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 2443 | : Qnil); |
80622eec RS |
2444 | /* We need to do this, so that the window-scroll-functions |
2445 | get called. */ | |
4d047f50 | 2446 | w->optional_new_start = Qt; |
00d3d838 KH |
2447 | |
2448 | set_buffer_internal (obuf); | |
2449 | } | |
5500c422 | 2450 | |
7ab12479 JB |
2451 | return Qnil; |
2452 | } | |
2453 | ||
2454 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
fdb82f93 PJ |
2455 | 1, 2, "bDelete windows on (buffer): ", |
2456 | doc: /* Delete all windows showing BUFFER. | |
c2755926 | 2457 | BUFFER must be a buffer or the name of an existing buffer. |
fdb82f93 PJ |
2458 | Optional second argument FRAME controls which frames are affected. |
2459 | If optional argument FRAME is `visible', search all visible frames. | |
2460 | If FRAME is 0, search all visible and iconified frames. | |
2461 | If FRAME is nil, search all frames. | |
2462 | If FRAME is t, search only the selected frame. | |
2463 | If FRAME is a frame, search only that frame. */) | |
2464 | (buffer, frame) | |
26f6279d | 2465 | Lisp_Object buffer, frame; |
7ab12479 | 2466 | { |
26f6279d JB |
2467 | /* FRAME uses t and nil to mean the opposite of what window_loop |
2468 | expects. */ | |
c520265e RS |
2469 | if (NILP (frame)) |
2470 | frame = Qt; | |
2471 | else if (EQ (frame, Qt)) | |
2472 | frame = Qnil; | |
26f6279d | 2473 | |
265a9e55 | 2474 | if (!NILP (buffer)) |
7ab12479 JB |
2475 | { |
2476 | buffer = Fget_buffer (buffer); | |
b7826503 | 2477 | CHECK_BUFFER (buffer); |
26f6279d | 2478 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 | 2479 | } |
177c0ea7 | 2480 | |
7ab12479 JB |
2481 | return Qnil; |
2482 | } | |
2483 | ||
2484 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
fdb82f93 PJ |
2485 | Sreplace_buffer_in_windows, |
2486 | 1, 1, "bReplace buffer in windows: ", | |
c2755926 LT |
2487 | doc: /* Replace BUFFER with some other buffer in all windows showing it. |
2488 | BUFFER may be a buffer or the name of an existing buffer. */) | |
fdb82f93 | 2489 | (buffer) |
7ab12479 JB |
2490 | Lisp_Object buffer; |
2491 | { | |
265a9e55 | 2492 | if (!NILP (buffer)) |
7ab12479 JB |
2493 | { |
2494 | buffer = Fget_buffer (buffer); | |
b7826503 | 2495 | CHECK_BUFFER (buffer); |
7ab12479 JB |
2496 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); |
2497 | } | |
2498 | return Qnil; | |
2499 | } | |
ff58478b RS |
2500 | |
2501 | /* Replace BUFFER with some other buffer in all windows | |
2502 | of all frames, even those on other keyboards. */ | |
2503 | ||
2504 | void | |
2505 | replace_buffer_in_all_windows (buffer) | |
2506 | Lisp_Object buffer; | |
2507 | { | |
27abb84f | 2508 | #ifdef MULTI_KBOARD |
ff58478b RS |
2509 | Lisp_Object tail, frame; |
2510 | ||
ff58478b RS |
2511 | /* A single call to window_loop won't do the job |
2512 | because it only considers frames on the current keyboard. | |
2513 | So loop manually over frames, and handle each one. */ | |
2514 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 2515 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 2516 | #else |
db7f721d | 2517 | window_loop (UNSHOW_BUFFER, buffer, 1, Qt); |
ff58478b RS |
2518 | #endif |
2519 | } | |
7ab12479 JB |
2520 | \f |
2521 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
2522 | |
2523 | /* The smallest acceptable dimensions for a window. Anything smaller | |
2524 | might crash Emacs. */ | |
5500c422 | 2525 | |
a481b3ea | 2526 | #define MIN_SAFE_WINDOW_WIDTH (2) |
dc1ab1ee | 2527 | #define MIN_SAFE_WINDOW_HEIGHT (1) |
a481b3ea JB |
2528 | |
2529 | /* Make sure that window_min_height and window_min_width are | |
2530 | not too small; if they are, set them to safe minima. */ | |
2531 | ||
2532 | static void | |
2533 | check_min_window_sizes () | |
2534 | { | |
2535 | /* Smaller values might permit a crash. */ | |
2536 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
2537 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
2538 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
2539 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
2540 | } | |
2541 | ||
2542 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
2543 | minimum allowable size. */ | |
5500c422 | 2544 | |
605be8af | 2545 | void |
a481b3ea | 2546 | check_frame_size (frame, rows, cols) |
605be8af JB |
2547 | FRAME_PTR frame; |
2548 | int *rows, *cols; | |
a481b3ea | 2549 | { |
628df3bf | 2550 | /* For height, we have to see: |
54b8bcb5 RS |
2551 | how many windows the frame has at minimum (one or two), |
2552 | and whether it has a menu bar or other special stuff at the top. */ | |
2553 | int min_height | |
2554 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
2555 | ? MIN_SAFE_WINDOW_HEIGHT | |
2556 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 2557 | |
5500c422 GM |
2558 | if (FRAME_TOP_MARGIN (frame) > 0) |
2559 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2560 | |
2561 | if (*rows < min_height) | |
2562 | *rows = min_height; | |
2563 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2564 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2565 | } | |
2566 | ||
233a4a2c GM |
2567 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
2568 | check if W's width can be changed, otherwise check W's height. | |
2569 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
2570 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
2571 | either. */ | |
c1636aa6 | 2572 | |
233a4a2c GM |
2573 | static int |
2574 | window_fixed_size_p (w, width_p, check_siblings_p) | |
2575 | struct window *w; | |
2576 | int width_p, check_siblings_p; | |
2577 | { | |
2578 | int fixed_p; | |
2579 | struct window *c; | |
177c0ea7 | 2580 | |
233a4a2c GM |
2581 | if (!NILP (w->hchild)) |
2582 | { | |
2583 | c = XWINDOW (w->hchild); | |
177c0ea7 | 2584 | |
233a4a2c GM |
2585 | if (width_p) |
2586 | { | |
2587 | /* A horiz. combination is fixed-width if all of if its | |
2588 | children are. */ | |
2589 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2590 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2591 | fixed_p = c == NULL; | |
2592 | } | |
2593 | else | |
2594 | { | |
2595 | /* A horiz. combination is fixed-height if one of if its | |
2596 | children is. */ | |
2597 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2598 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2599 | fixed_p = c != NULL; | |
2600 | } | |
2601 | } | |
2602 | else if (!NILP (w->vchild)) | |
2603 | { | |
2604 | c = XWINDOW (w->vchild); | |
177c0ea7 | 2605 | |
233a4a2c GM |
2606 | if (width_p) |
2607 | { | |
2608 | /* A vert. combination is fixed-width if one of if its | |
2609 | children is. */ | |
2610 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2611 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2612 | fixed_p = c != NULL; | |
2613 | } | |
2614 | else | |
2615 | { | |
2616 | /* A vert. combination is fixed-height if all of if its | |
2617 | children are. */ | |
2618 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2619 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2620 | fixed_p = c == NULL; | |
2621 | } | |
2622 | } | |
2623 | else if (BUFFERP (w->buffer)) | |
2624 | { | |
3df0580e AS |
2625 | struct buffer *old = current_buffer; |
2626 | Lisp_Object val; | |
177c0ea7 | 2627 | |
3df0580e AS |
2628 | current_buffer = XBUFFER (w->buffer); |
2629 | val = find_symbol_value (Qwindow_size_fixed); | |
2630 | current_buffer = old; | |
a34dfd12 | 2631 | |
3df0580e AS |
2632 | fixed_p = 0; |
2633 | if (!EQ (val, Qunbound)) | |
2634 | { | |
2635 | fixed_p = !NILP (val); | |
177c0ea7 | 2636 | |
3df0580e AS |
2637 | if (fixed_p |
2638 | && ((EQ (val, Qheight) && width_p) | |
2639 | || (EQ (val, Qwidth) && !width_p))) | |
2640 | fixed_p = 0; | |
233a4a2c GM |
2641 | } |
2642 | ||
2643 | /* Can't tell if this one is resizable without looking at | |
2644 | siblings. If all siblings are fixed-size this one is too. */ | |
2645 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2646 | { | |
2647 | Lisp_Object child; | |
177c0ea7 | 2648 | |
233a4a2c GM |
2649 | for (child = w->prev; !NILP (child); child = XWINDOW (child)->prev) |
2650 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2651 | break; | |
2652 | ||
2653 | if (NILP (child)) | |
2654 | for (child = w->next; !NILP (child); child = XWINDOW (child)->next) | |
2655 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2656 | break; | |
2657 | ||
2658 | if (NILP (child)) | |
2659 | fixed_p = 1; | |
2660 | } | |
2661 | } | |
2662 | else | |
2663 | fixed_p = 1; | |
2664 | ||
2665 | return fixed_p; | |
2666 | } | |
177c0ea7 | 2667 | |
35ea56c9 | 2668 | /* Return the minimum size for leaf window W. WIDTH_P non-zero means |
b6ff295c MR |
2669 | take into account fringes and the scrollbar of W. WIDTH_P zero means |
2670 | take into account mode-line of W. Return 1 for the minibuffer. */ | |
35ea56c9 MR |
2671 | |
2672 | static int | |
2673 | window_min_size_2 (w, width_p) | |
2674 | struct window *w; | |
2675 | int width_p; | |
2676 | { | |
2677 | int size; | |
2678 | ||
2679 | if (width_p) | |
2680 | size = max (window_min_width, | |
2681 | (MIN_SAFE_WINDOW_WIDTH | |
2682 | + WINDOW_FRINGE_COLS (w) | |
2683 | + WINDOW_SCROLL_BAR_COLS (w))); | |
2684 | else if (MINI_WINDOW_P (w)) | |
2685 | size = 1; | |
2686 | else | |
2687 | size = max (window_min_height, | |
2688 | (MIN_SAFE_WINDOW_HEIGHT | |
b6ff295c MR |
2689 | /* Don't count the header-line here. It would break |
2690 | splitting a window with a header-line when the new | |
2691 | window shall have a height of two (calculator does | |
2692 | that). */ | |
2693 | + (WINDOW_WANTS_MODELINE_P (w) ? 1 : 0))); | |
35ea56c9 MR |
2694 | |
2695 | return size; | |
2696 | } | |
233a4a2c GM |
2697 | |
2698 | /* Return the minimum size of window W, not taking fixed-width windows | |
2699 | into account. WIDTH_P non-zero means return the minimum width, | |
2700 | otherwise return the minimum height. If W is a combination window, | |
2701 | compute the minimum size from the minimum sizes of W's children. */ | |
2702 | ||
2703 | static int | |
2704 | window_min_size_1 (w, width_p) | |
c1636aa6 GM |
2705 | struct window *w; |
2706 | int width_p; | |
2707 | { | |
233a4a2c | 2708 | struct window *c; |
c1636aa6 | 2709 | int size; |
177c0ea7 | 2710 | |
233a4a2c GM |
2711 | if (!NILP (w->hchild)) |
2712 | { | |
2713 | c = XWINDOW (w->hchild); | |
2714 | size = 0; | |
177c0ea7 | 2715 | |
233a4a2c GM |
2716 | if (width_p) |
2717 | { | |
2718 | /* The min width of a horizontal combination is | |
2719 | the sum of the min widths of its children. */ | |
2720 | while (c) | |
2721 | { | |
2722 | size += window_min_size_1 (c, width_p); | |
2723 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2724 | } | |
2725 | } | |
2726 | else | |
2727 | { | |
2728 | /* The min height a horizontal combination equals | |
2729 | the maximum of all min height of its children. */ | |
2730 | while (c) | |
2731 | { | |
2732 | int min_size = window_min_size_1 (c, width_p); | |
2733 | size = max (min_size, size); | |
2734 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2735 | } | |
2736 | } | |
2737 | } | |
2738 | else if (!NILP (w->vchild)) | |
2739 | { | |
2740 | c = XWINDOW (w->vchild); | |
2741 | size = 0; | |
177c0ea7 | 2742 | |
233a4a2c GM |
2743 | if (width_p) |
2744 | { | |
2745 | /* The min width of a vertical combination is | |
2746 | the maximum of the min widths of its children. */ | |
2747 | while (c) | |
2748 | { | |
2749 | int min_size = window_min_size_1 (c, width_p); | |
2750 | size = max (min_size, size); | |
2751 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2752 | } | |
2753 | } | |
2754 | else | |
2755 | { | |
2756 | /* The min height of a vertical combination equals | |
2757 | the sum of the min height of its children. */ | |
2758 | while (c) | |
2759 | { | |
2760 | size += window_min_size_1 (c, width_p); | |
2761 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2762 | } | |
2763 | } | |
2764 | } | |
c1636aa6 | 2765 | else |
35ea56c9 | 2766 | size = window_min_size_2 (w, width_p); |
c1636aa6 GM |
2767 | |
2768 | return size; | |
2769 | } | |
2770 | ||
2771 | ||
233a4a2c GM |
2772 | /* Return the minimum size of window W, taking fixed-size windows into |
2773 | account. WIDTH_P non-zero means return the minimum width, | |
f984d4fc GM |
2774 | otherwise return the minimum height. IGNORE_FIXED_P non-zero means |
2775 | ignore if W is fixed-size. Set *FIXED to 1 if W is fixed-size | |
2776 | unless FIXED is null. */ | |
7ab12479 | 2777 | |
233a4a2c | 2778 | static int |
f984d4fc | 2779 | window_min_size (w, width_p, ignore_fixed_p, fixed) |
233a4a2c | 2780 | struct window *w; |
f984d4fc | 2781 | int width_p, ignore_fixed_p, *fixed; |
233a4a2c GM |
2782 | { |
2783 | int size, fixed_p; | |
2784 | ||
f984d4fc GM |
2785 | if (ignore_fixed_p) |
2786 | fixed_p = 0; | |
2787 | else | |
2788 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
177c0ea7 | 2789 | |
233a4a2c GM |
2790 | if (fixed) |
2791 | *fixed = fixed_p; | |
177c0ea7 | 2792 | |
233a4a2c | 2793 | if (fixed_p) |
949cf20f | 2794 | size = width_p ? XFASTINT (w->total_cols) : XFASTINT (w->total_lines); |
233a4a2c GM |
2795 | else |
2796 | size = window_min_size_1 (w, width_p); | |
177c0ea7 | 2797 | |
233a4a2c GM |
2798 | return size; |
2799 | } | |
2800 | ||
2801 | ||
79fd290e | 2802 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
2803 | Return 1 if window width is ok after adjustment; 0 if window |
2804 | is still too narrow. */ | |
2805 | ||
2806 | static int | |
2807 | adjust_window_margins (w) | |
2808 | struct window *w; | |
2809 | { | |
2810 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
2811 | - WINDOW_FRINGE_COLS (w) | |
2812 | - WINDOW_SCROLL_BAR_COLS (w)); | |
2813 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
2814 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
2815 | ||
2816 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
2817 | return 1; | |
2818 | ||
2819 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
2820 | return 0; | |
2821 | ||
2822 | /* Window's text area is too narrow, but reducing the window | |
2823 | margins will fix that. */ | |
2824 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
2825 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
2826 | { | |
2827 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
2828 | w->left_margin_cols = w->right_margin_cols | |
2829 | = make_number (margin_cols/2); | |
2830 | else | |
2831 | w->right_margin_cols = make_number (margin_cols); | |
2832 | } | |
2833 | else | |
2834 | w->left_margin_cols = make_number (margin_cols); | |
2835 | return 1; | |
2836 | } | |
2837 | ||
0aa513ed JD |
2838 | /* Calculate new sizes for windows in the list FORWARD when the window size |
2839 | goes from TOTAL to SIZE. TOTAL must be greater than SIZE. | |
2840 | The number of windows in FORWARD is NCHILDREN, and the number that | |
2841 | can shrink is SHRINKABLE. | |
2842 | The minimum size a window can have is MIN_SIZE. | |
2843 | If we are shrinking fixed windows, RESIZE_FIXED_P is non-zero. | |
2844 | If we are shrinking columns, WIDTH_P is non-zero, otherwise we are | |
2845 | shrinking rows. | |
2846 | ||
2847 | This function returns an allocated array of new sizes that the caller | |
2848 | must free. The size -1 means the window is fixed and RESIZE_FIXED_P | |
2849 | is zero. Array index 0 refers to the first window in FORWARD, 1 to | |
2850 | the second, and so on. | |
2851 | ||
2852 | This function tries to keep windows at least at the minimum size | |
2853 | and resize other windows before it resizes any window to zero (i.e. | |
2854 | delete that window). | |
2855 | ||
2856 | Windows are resized proportional to their size, so bigger windows | |
2857 | shrink more than smaller windows. */ | |
2858 | static int * | |
2859 | shrink_windows (total, size, nchildren, shrinkable, | |
2860 | min_size, resize_fixed_p, forward, width_p) | |
2861 | int total, size, nchildren, shrinkable, min_size; | |
2862 | int resize_fixed_p, width_p; | |
2863 | Lisp_Object forward; | |
2864 | { | |
2865 | int available_resize = 0; | |
2866 | int *new_sizes; | |
2867 | struct window *c; | |
2868 | Lisp_Object child; | |
2869 | int smallest = total; | |
2870 | int total_removed = 0; | |
2871 | int total_shrink = total - size; | |
2872 | int i; | |
2873 | ||
2874 | new_sizes = xmalloc (sizeof (*new_sizes) * nchildren); | |
2875 | ||
2876 | for (i = 0, child = forward; !NILP (child); child = c->next, ++i) | |
2877 | { | |
2878 | int child_size; | |
2879 | ||
2880 | c = XWINDOW (child); | |
2881 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); | |
2882 | ||
2883 | if (! resize_fixed_p && window_fixed_size_p (c, width_p, 0)) | |
2884 | new_sizes[i] = -1; | |
2885 | else | |
2886 | { | |
2887 | new_sizes[i] = child_size; | |
2888 | if (child_size > min_size) | |
2889 | available_resize += child_size - min_size; | |
2890 | } | |
2891 | } | |
2892 | /* We might need to shrink some windows to zero. Find the smallest | |
2893 | windows and set them to 0 until we can fulfil the new size. */ | |
2894 | ||
2895 | while (shrinkable > 1 && size + available_resize < total) | |
2896 | { | |
2897 | for (i = 0; i < nchildren; ++i) | |
2898 | if (new_sizes[i] > 0 && smallest > new_sizes[i]) | |
2899 | smallest = new_sizes[i]; | |
2900 | ||
2901 | for (i = 0; i < nchildren; ++i) | |
2902 | if (new_sizes[i] == smallest) | |
2903 | { | |
2904 | /* Resize this window down to zero. */ | |
2905 | new_sizes[i] = 0; | |
2906 | if (smallest > min_size) | |
2907 | available_resize -= smallest - min_size; | |
2908 | available_resize += smallest; | |
2909 | --shrinkable; | |
2910 | total_removed += smallest; | |
2911 | ||
ef614e04 JD |
2912 | /* We don't know what the smallest is now. */ |
2913 | smallest = total; | |
2914 | ||
0aa513ed JD |
2915 | /* Out of for, just remove one window at the time and |
2916 | check again if we have enough space. */ | |
2917 | break; | |
2918 | } | |
2919 | } | |
2920 | ||
2921 | /* Now, calculate the new sizes. Try to shrink each window | |
2922 | proportional to its size. */ | |
2923 | for (i = 0; i < nchildren; ++i) | |
2924 | { | |
2925 | if (new_sizes[i] > min_size) | |
2926 | { | |
2927 | int to_shrink = total_shrink*new_sizes[i]/total; | |
2928 | if (new_sizes[i] - to_shrink < min_size) | |
2929 | to_shrink = new_sizes[i] - min_size; | |
2930 | new_sizes[i] -= to_shrink; | |
2931 | total_removed += to_shrink; | |
2932 | } | |
2933 | } | |
2934 | ||
2935 | /* Any reminder due to rounding, we just subtract from windows | |
2936 | that are left and still can be shrunk. */ | |
2937 | while (total_shrink > total_removed) | |
2938 | { | |
ef614e04 JD |
2939 | int nonzero_sizes = 0; |
2940 | int nonzero_idx = -1; | |
2941 | ||
2942 | for (i = 0; i < nchildren; ++i) | |
2943 | if (new_sizes[i] > 0) | |
2944 | { | |
2945 | ++nonzero_sizes; | |
2946 | nonzero_idx = i; | |
2947 | } | |
c49a0495 | 2948 | |
0aa513ed JD |
2949 | for (i = 0; i < nchildren; ++i) |
2950 | if (new_sizes[i] > min_size) | |
2951 | { | |
2952 | --new_sizes[i]; | |
2953 | ++total_removed; | |
2954 | ||
2955 | /* Out of for, just shrink one window at the time and | |
2956 | check again if we have enough space. */ | |
2957 | break; | |
2958 | } | |
ef614e04 JD |
2959 | |
2960 | ||
2961 | /* Special case, only one window left. */ | |
2962 | if (nonzero_sizes == 1) | |
2963 | break; | |
2964 | } | |
2965 | ||
2966 | /* Any surplus due to rounding, we add to windows that are left. */ | |
2967 | while (total_shrink < total_removed) | |
2968 | { | |
2969 | for (i = 0; i < nchildren; ++i) | |
2970 | { | |
2971 | if (new_sizes[i] != 0 && total_shrink < total_removed) | |
2972 | { | |
2973 | ++new_sizes[i]; | |
2974 | --total_removed; | |
2975 | break; | |
2976 | } | |
2977 | } | |
0aa513ed JD |
2978 | } |
2979 | ||
2980 | return new_sizes; | |
2981 | } | |
949cf20f | 2982 | |
233a4a2c GM |
2983 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set |
2984 | WINDOW's width. Resize WINDOW's children, if any, so that they | |
5fe0b054 RS |
2985 | keep their proportionate size relative to WINDOW. |
2986 | ||
2987 | If FIRST_ONLY is 1, change only the first of WINDOW's children when | |
2988 | they are in series. If LAST_ONLY is 1, change only the last of | |
2989 | WINDOW's children when they are in series. | |
2990 | ||
2991 | Propagate WINDOW's top or left edge position to children. Delete | |
2992 | windows that become too small unless NODELETE_P is non-zero. | |
192c3131 RS |
2993 | |
2994 | If NODELETE_P is 2, that means we do delete windows that are | |
2995 | too small, even if they were too small before! */ | |
233a4a2c GM |
2996 | |
2997 | static void | |
5fe0b054 | 2998 | size_window (window, size, width_p, nodelete_p, first_only, last_only) |
7ab12479 | 2999 | Lisp_Object window; |
233a4a2c | 3000 | int size, width_p, nodelete_p; |
5fe0b054 | 3001 | int first_only, last_only; |
7ab12479 | 3002 | { |
233a4a2c GM |
3003 | struct window *w = XWINDOW (window); |
3004 | struct window *c; | |
3005 | Lisp_Object child, *forward, *sideward; | |
949cf20f | 3006 | int old_size, min_size, safe_min_size; |
7ab12479 | 3007 | |
a481b3ea | 3008 | check_min_window_sizes (); |
7ae2f10f | 3009 | size = max (0, size); |
177c0ea7 | 3010 | |
b5f05b50 GM |
3011 | /* If the window has been "too small" at one point, |
3012 | don't delete it for being "too small" in the future. | |
3013 | Preserve it as long as that is at all possible. */ | |
233a4a2c GM |
3014 | if (width_p) |
3015 | { | |
949cf20f | 3016 | old_size = WINDOW_TOTAL_COLS (w); |
233a4a2c | 3017 | min_size = window_min_width; |
35ea56c9 | 3018 | safe_min_size = window_min_size_2 (w, 1); |
233a4a2c GM |
3019 | } |
3020 | else | |
3021 | { | |
949cf20f | 3022 | old_size = XINT (w->total_lines); |
233a4a2c | 3023 | min_size = window_min_height; |
35ea56c9 | 3024 | safe_min_size = window_min_size_2 (w, 0); |
233a4a2c | 3025 | } |
192c3131 RS |
3026 | |
3027 | if (old_size < min_size && nodelete_p != 2) | |
b5f05b50 GM |
3028 | w->too_small_ok = Qt; |
3029 | ||
35ea56c9 MR |
3030 | /* Move the following test here since otherwise the |
3031 | preceding test doesn't make sense. martin. */ | |
3032 | if (nodelete_p == 2) | |
3033 | nodelete_p = 0; | |
3034 | ||
233a4a2c | 3035 | /* Maybe delete WINDOW if it's too small. */ |
192c3131 | 3036 | if (nodelete_p != 1 && !NILP (w->parent)) |
7ab12479 | 3037 | { |
b5f05b50 | 3038 | if (!MINI_WINDOW_P (w) && !NILP (w->too_small_ok)) |
233a4a2c | 3039 | min_size = width_p ? MIN_SAFE_WINDOW_WIDTH : MIN_SAFE_WINDOW_HEIGHT; |
949cf20f KS |
3040 | if (min_size < safe_min_size) |
3041 | min_size = safe_min_size; | |
233a4a2c | 3042 | if (size < min_size) |
c1636aa6 GM |
3043 | { |
3044 | delete_window (window); | |
3045 | return; | |
3046 | } | |
7ab12479 JB |
3047 | } |
3048 | ||
233a4a2c | 3049 | /* Set redisplay hints. */ |
7ae2f10f GM |
3050 | w->last_modified = make_number (0); |
3051 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 3052 | windows_or_buffers_changed++; |
7ae2f10f | 3053 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 3054 | |
233a4a2c GM |
3055 | if (width_p) |
3056 | { | |
3057 | sideward = &w->vchild; | |
3058 | forward = &w->hchild; | |
949cf20f KS |
3059 | w->total_cols = make_number (size); |
3060 | adjust_window_margins (w); | |
233a4a2c GM |
3061 | } |
3062 | else | |
3063 | { | |
3064 | sideward = &w->hchild; | |
3065 | forward = &w->vchild; | |
949cf20f KS |
3066 | w->total_lines = make_number (size); |
3067 | w->orig_total_lines = Qnil; | |
233a4a2c GM |
3068 | } |
3069 | ||
3070 | if (!NILP (*sideward)) | |
7ab12479 | 3071 | { |
5fe0b054 | 3072 | /* We have a chain of parallel siblings whose size should all change. */ |
233a4a2c | 3073 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 3074 | { |
233a4a2c GM |
3075 | c = XWINDOW (child); |
3076 | if (width_p) | |
949cf20f | 3077 | c->left_col = w->left_col; |
233a4a2c | 3078 | else |
949cf20f | 3079 | c->top_line = w->top_line; |
5fe0b054 RS |
3080 | size_window (child, size, width_p, nodelete_p, |
3081 | first_only, last_only); | |
7ab12479 JB |
3082 | } |
3083 | } | |
5fe0b054 RS |
3084 | else if (!NILP (*forward) && last_only) |
3085 | { | |
3086 | /* Change the last in a series of siblings. */ | |
3087 | Lisp_Object last_child; | |
3088 | int child_size; | |
3089 | ||
3090 | for (child = *forward; !NILP (child); child = c->next) | |
3091 | { | |
3092 | c = XWINDOW (child); | |
3093 | last_child = child; | |
3094 | } | |
3095 | ||
3096 | child_size = XINT (width_p ? c->total_cols : c->total_lines); | |
3097 | size_window (last_child, | |
3098 | size - old_size + child_size, | |
3099 | width_p, nodelete_p, first_only, last_only); | |
3100 | } | |
3101 | else if (!NILP (*forward) && first_only) | |
3102 | { | |
3103 | /* Change the first in a series of siblings. */ | |
3104 | int child_size; | |
3105 | ||
3106 | child = *forward; | |
3107 | c = XWINDOW (child); | |
3108 | ||
3109 | if (width_p) | |
3110 | c->left_col = w->left_col; | |
3111 | else | |
3112 | c->top_line = w->top_line; | |
3113 | ||
3114 | child_size = XINT (width_p ? c->total_cols : c->total_lines); | |
3115 | size_window (child, | |
3116 | size - old_size + child_size, | |
3117 | width_p, nodelete_p, first_only, last_only); | |
3118 | } | |
233a4a2c | 3119 | else if (!NILP (*forward)) |
7ab12479 | 3120 | { |
233a4a2c GM |
3121 | int fixed_size, each, extra, n; |
3122 | int resize_fixed_p, nfixed; | |
8b6d9dc9 | 3123 | int last_pos, first_pos, nchildren, total; |
0aa513ed | 3124 | int *new_sizes = NULL; |
233a4a2c | 3125 | |
5fe0b054 | 3126 | /* Determine the fixed-size portion of this window, and the |
233a4a2c | 3127 | number of child windows. */ |
8b6d9dc9 | 3128 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 3129 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 3130 | { |
8b6d9dc9 | 3131 | int child_size; |
177c0ea7 | 3132 | |
7ab12479 | 3133 | c = XWINDOW (child); |
949cf20f | 3134 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); |
8b6d9dc9 | 3135 | total += child_size; |
177c0ea7 | 3136 | |
233a4a2c GM |
3137 | if (window_fixed_size_p (c, width_p, 0)) |
3138 | { | |
8b6d9dc9 | 3139 | fixed_size += child_size; |
233a4a2c GM |
3140 | ++nfixed; |
3141 | } | |
3142 | } | |
7ab12479 | 3143 | |
233a4a2c GM |
3144 | /* If the new size is smaller than fixed_size, or if there |
3145 | aren't any resizable windows, allow resizing fixed-size | |
3146 | windows. */ | |
3147 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
3148 | ||
0aa513ed | 3149 | /* Compute how many lines/columns to add/remove to each child. The |
233a4a2c GM |
3150 | value of extra takes care of rounding errors. */ |
3151 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
0aa513ed JD |
3152 | if (size < total && n > 1) |
3153 | new_sizes = shrink_windows (total, size, nchildren, n, min_size, | |
3154 | resize_fixed_p, *forward, width_p); | |
3155 | else | |
3156 | { | |
3157 | each = (size - total) / n; | |
3158 | extra = (size - total) - n * each; | |
3159 | } | |
233a4a2c GM |
3160 | |
3161 | /* Compute new children heights and edge positions. */ | |
949cf20f | 3162 | first_pos = width_p ? XINT (w->left_col) : XINT (w->top_line); |
233a4a2c | 3163 | last_pos = first_pos; |
0aa513ed | 3164 | for (n = 0, child = *forward; !NILP (child); child = c->next, ++n) |
233a4a2c GM |
3165 | { |
3166 | int new_size, old_size; | |
177c0ea7 | 3167 | |
233a4a2c | 3168 | c = XWINDOW (child); |
949cf20f | 3169 | old_size = width_p ? XFASTINT (c->total_cols) : XFASTINT (c->total_lines); |
233a4a2c | 3170 | new_size = old_size; |
7ab12479 | 3171 | |
233a4a2c GM |
3172 | /* The top or left edge position of this child equals the |
3173 | bottom or right edge of its predecessor. */ | |
3174 | if (width_p) | |
949cf20f | 3175 | c->left_col = make_number (last_pos); |
233a4a2c | 3176 | else |
949cf20f | 3177 | c->top_line = make_number (last_pos); |
7ab12479 | 3178 | |
233a4a2c GM |
3179 | /* If this child can be resized, do it. */ |
3180 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
3181 | { | |
0aa513ed | 3182 | new_size = new_sizes ? new_sizes[n] : old_size + each + extra; |
233a4a2c GM |
3183 | extra = 0; |
3184 | } | |
177c0ea7 | 3185 | |
233a4a2c GM |
3186 | /* Set new height. Note that size_window also propagates |
3187 | edge positions to children, so it's not a no-op if we | |
3188 | didn't change the child's size. */ | |
5fe0b054 | 3189 | size_window (child, new_size, width_p, 1, first_only, last_only); |
233a4a2c GM |
3190 | |
3191 | /* Remember the bottom/right edge position of this child; it | |
3192 | will be used to set the top/left edge of the next child. */ | |
0aa513ed | 3193 | last_pos += new_size; |
7ab12479 | 3194 | } |
233a4a2c | 3195 | |
0aa513ed JD |
3196 | if (new_sizes) xfree (new_sizes); |
3197 | ||
233a4a2c GM |
3198 | /* We should have covered the parent exactly with child windows. */ |
3199 | xassert (size == last_pos - first_pos); | |
177c0ea7 | 3200 | |
7ab12479 | 3201 | /* Now delete any children that became too small. */ |
233a4a2c GM |
3202 | if (!nodelete_p) |
3203 | for (child = *forward; !NILP (child); child = c->next) | |
7ab12479 | 3204 | { |
233a4a2c GM |
3205 | int child_size; |
3206 | c = XWINDOW (child); | |
949cf20f | 3207 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); |
5fe0b054 | 3208 | size_window (child, child_size, width_p, 2, first_only, last_only); |
7ab12479 JB |
3209 | } |
3210 | } | |
3211 | } | |
3212 | ||
233a4a2c GM |
3213 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
3214 | WINDOW's children. NODELETE non-zero means don't delete windows | |
3215 | that become too small in the process. (The caller should check | |
3216 | later and do so if appropriate.) */ | |
7ab12479 | 3217 | |
5e14b1fc | 3218 | void |
233a4a2c | 3219 | set_window_height (window, height, nodelete) |
7ab12479 | 3220 | Lisp_Object window; |
233a4a2c | 3221 | int height; |
7ab12479 JB |
3222 | int nodelete; |
3223 | { | |
5fe0b054 | 3224 | size_window (window, height, 0, nodelete, 0, 0); |
233a4a2c | 3225 | } |
7ab12479 | 3226 | |
7ab12479 | 3227 | |
233a4a2c GM |
3228 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
3229 | WINDOW's children. NODELETE non-zero means don't delete windows | |
3230 | that become too small in the process. (The caller should check | |
3231 | later and do so if appropriate.) */ | |
7ab12479 | 3232 | |
233a4a2c GM |
3233 | void |
3234 | set_window_width (window, width, nodelete) | |
3235 | Lisp_Object window; | |
3236 | int width; | |
3237 | int nodelete; | |
3238 | { | |
5fe0b054 | 3239 | size_window (window, width, 1, nodelete, 0, 0); |
7ab12479 | 3240 | } |
233a4a2c | 3241 | |
cdbc7fec KS |
3242 | /* Change window heights in windows rooted in WINDOW by N lines. */ |
3243 | ||
3244 | void | |
3245 | change_window_heights (window, n) | |
3246 | Lisp_Object window; | |
3247 | int n; | |
3248 | { | |
3249 | struct window *w = XWINDOW (window); | |
3250 | ||
949cf20f KS |
3251 | XSETFASTINT (w->top_line, XFASTINT (w->top_line) + n); |
3252 | XSETFASTINT (w->total_lines, XFASTINT (w->total_lines) - n); | |
cdbc7fec | 3253 | |
949cf20f KS |
3254 | if (INTEGERP (w->orig_top_line)) |
3255 | XSETFASTINT (w->orig_top_line, XFASTINT (w->orig_top_line) + n); | |
3256 | if (INTEGERP (w->orig_total_lines)) | |
3257 | XSETFASTINT (w->orig_total_lines, XFASTINT (w->orig_total_lines) - n); | |
cdbc7fec KS |
3258 | |
3259 | /* Handle just the top child in a vertical split. */ | |
3260 | if (!NILP (w->vchild)) | |
3261 | change_window_heights (w->vchild, n); | |
3262 | ||
3263 | /* Adjust all children in a horizontal split. */ | |
3264 | for (window = w->hchild; !NILP (window); window = w->next) | |
3265 | { | |
3266 | w = XWINDOW (window); | |
3267 | change_window_heights (window, n); | |
3268 | } | |
3269 | } | |
3270 | ||
7ab12479 | 3271 | \f |
1d8d96fa | 3272 | int window_select_count; |
7ab12479 | 3273 | |
5b03d3c0 RS |
3274 | Lisp_Object |
3275 | Fset_window_buffer_unwind (obuf) | |
3276 | Lisp_Object obuf; | |
3277 | { | |
3278 | Fset_buffer (obuf); | |
3279 | return Qnil; | |
3280 | } | |
3281 | ||
56613f06 SM |
3282 | EXFUN (Fset_window_fringes, 4); |
3283 | EXFUN (Fset_window_scroll_bars, 4); | |
7ab12479 | 3284 | |
5500c422 GM |
3285 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3286 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3287 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3288 | margins, fringes, and scroll-bar settings of the window are not | |
3289 | reset from the buffer's local settings. */ | |
7ab12479 | 3290 | |
5500c422 | 3291 | void |
949cf20f | 3292 | set_window_buffer (window, buffer, run_hooks_p, keep_margins_p) |
5500c422 | 3293 | Lisp_Object window, buffer; |
949cf20f | 3294 | int run_hooks_p, keep_margins_p; |
5500c422 GM |
3295 | { |
3296 | struct window *w = XWINDOW (window); | |
3297 | struct buffer *b = XBUFFER (buffer); | |
aed13378 | 3298 | int count = SPECPDL_INDEX (); |
7ab12479 JB |
3299 | |
3300 | w->buffer = buffer; | |
86e48436 RS |
3301 | |
3302 | if (EQ (window, selected_window)) | |
5500c422 | 3303 | b->last_selected_window = window; |
beb4e312 | 3304 | |
c49a0495 KS |
3305 | /* Let redisplay errors through. */ |
3306 | b->display_error_modiff = 0; | |
3307 | ||
beb4e312 | 3308 | /* Update time stamps of buffer display. */ |
5500c422 GM |
3309 | if (INTEGERP (b->display_count)) |
3310 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
3311 | b->display_time = Fcurrent_time (); | |
86e48436 | 3312 | |
d834a2e9 | 3313 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 GM |
3314 | XSETFASTINT (w->window_end_vpos, 0); |
3315 | bzero (&w->last_cursor, sizeof w->last_cursor); | |
5a41ab94 | 3316 | w->window_end_valid = Qnil; |
1c686c99 | 3317 | w->hscroll = w->min_hscroll = make_number (0); |
224227d1 | 3318 | w->vscroll = 0; |
5500c422 | 3319 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
7ab12479 | 3320 | set_marker_restricted (w->start, |
5500c422 | 3321 | make_number (b->last_window_start), |
7ab12479 JB |
3322 | buffer); |
3323 | w->start_at_line_beg = Qnil; | |
e36ab06b | 3324 | w->force_start = Qnil; |
d834a2e9 | 3325 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 3326 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 3327 | windows_or_buffers_changed++; |
5b03d3c0 RS |
3328 | |
3329 | /* We must select BUFFER for running the window-scroll-functions. | |
3330 | If WINDOW is selected, switch permanently. | |
3331 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
3332 | if (EQ (window, selected_window)) |
3333 | Fset_buffer (buffer); | |
5b03d3c0 RS |
3334 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3335 | because that might itself be a local variable. */ | |
3336 | else if (window_initialized) | |
3337 | { | |
3338 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
3339 | Fset_buffer (buffer); | |
3340 | } | |
3341 | ||
949cf20f KS |
3342 | if (!keep_margins_p) |
3343 | { | |
3344 | /* Set left and right marginal area width etc. from buffer. */ | |
3345 | ||
79fd290e | 3346 | /* This may call adjust_window_margins three times, so |
949cf20f | 3347 | temporarily disable window margins. */ |
3834380d KS |
3348 | Lisp_Object save_left = w->left_margin_cols; |
3349 | Lisp_Object save_right = w->right_margin_cols; | |
3350 | ||
949cf20f KS |
3351 | w->left_margin_cols = w->right_margin_cols = Qnil; |
3352 | ||
3353 | Fset_window_fringes (window, | |
3354 | b->left_fringe_width, b->right_fringe_width, | |
3355 | b->fringes_outside_margins); | |
3356 | ||
3357 | Fset_window_scroll_bars (window, | |
3358 | b->scroll_bar_width, | |
3359 | b->vertical_scroll_bar_type, Qnil); | |
3360 | ||
3834380d KS |
3361 | w->left_margin_cols = save_left; |
3362 | w->right_margin_cols = save_right; | |
3363 | ||
949cf20f KS |
3364 | Fset_window_margins (window, |
3365 | b->left_margin_cols, b->right_margin_cols); | |
3366 | } | |
7ab12479 | 3367 | |
5500c422 GM |
3368 | if (run_hooks_p) |
3369 | { | |
3370 | if (! NILP (Vwindow_scroll_functions)) | |
3371 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
3372 | Fmarker_position (w->start)); | |
3373 | ||
3374 | if (! NILP (Vwindow_configuration_change_hook) | |
3375 | && ! NILP (Vrun_hooks)) | |
3376 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3377 | } | |
543f5fb1 | 3378 | |
5b03d3c0 | 3379 | unbind_to (count, Qnil); |
5500c422 | 3380 | } |
5b03d3c0 | 3381 | |
5500c422 | 3382 | |
949cf20f | 3383 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
fdb82f93 | 3384 | doc: /* Make WINDOW display BUFFER as its contents. |
c2755926 | 3385 | BUFFER can be a buffer or the name of an existing buffer. |
ab80314b | 3386 | Optional third arg KEEP-MARGINS non-nil means that WINDOW's current |
949cf20f KS |
3387 | display margins, fringe widths, and scroll bar settings are maintained; |
3388 | the default is to reset these from BUFFER's local settings or the frame | |
6cb4a892 RS |
3389 | defaults. |
3390 | ||
3391 | This function runs the hook `window-scroll-functions'. */) | |
949cf20f | 3392 | (window, buffer, keep_margins) |
56613f06 | 3393 | register Lisp_Object window, buffer, keep_margins; |
5500c422 GM |
3394 | { |
3395 | register Lisp_Object tem; | |
3396 | register struct window *w = decode_window (window); | |
5500c422 | 3397 | |
bed0c171 | 3398 | XSETWINDOW (window, w); |
5500c422 | 3399 | buffer = Fget_buffer (buffer); |
b7826503 | 3400 | CHECK_BUFFER (buffer); |
5500c422 GM |
3401 | |
3402 | if (NILP (XBUFFER (buffer)->name)) | |
3403 | error ("Attempt to display deleted buffer"); | |
3404 | ||
3405 | tem = w->buffer; | |
3406 | if (NILP (tem)) | |
3407 | error ("Window is deleted"); | |
3408 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
3409 | is first being set up. */ | |
3410 | { | |
3411 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) | |
3412 | error ("Window is dedicated to `%s'", | |
d5db4077 | 3413 | SDATA (XBUFFER (tem)->name)); |
5500c422 GM |
3414 | |
3415 | unshow_buffer (w); | |
3416 | } | |
3417 | ||
949cf20f | 3418 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 JB |
3419 | return Qnil; |
3420 | } | |
3421 | ||
2d0834cc SM |
3422 | /* Note that selected_window can be nil |
3423 | when this is called from Fset_window_configuration. */ | |
3424 | ||
14d87dc9 | 3425 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, |
fdb82f93 | 3426 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. |
e963215c | 3427 | If WINDOW is not already selected, make WINDOW's buffer current |
c2755926 | 3428 | and make WINDOW the frame's selected window. Return WINDOW. |
14d87dc9 SM |
3429 | Optional second arg NORECORD non-nil means |
3430 | do not put this buffer at the front of the list of recently selected ones. | |
282f7831 | 3431 | |
fdb82f93 PJ |
3432 | Note that the main editor command loop |
3433 | selects the buffer of the selected window before each command. */) | |
14d87dc9 SM |
3434 | (window, norecord) |
3435 | register Lisp_Object window, norecord; | |
7ab12479 JB |
3436 | { |
3437 | register struct window *w; | |
719eaeb1 | 3438 | register struct window *ow; |
1ae1a37d | 3439 | struct frame *sf; |
7ab12479 | 3440 | |
b7826503 | 3441 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3442 | |
3443 | w = XWINDOW (window); | |
50e88778 | 3444 | w->frozen_window_start_p = 0; |
7ab12479 | 3445 | |
2a1893f4 SM |
3446 | ++window_select_count; |
3447 | XSETFASTINT (w->use_time, window_select_count); | |
7ab12479 JB |
3448 | if (EQ (window, selected_window)) |
3449 | return window; | |
3450 | ||
a46c0153 RS |
3451 | /* Store the current buffer's actual point into the |
3452 | old selected window. It belongs to that window, | |
3453 | and when the window is not selected, must be in the window. */ | |
719eaeb1 GM |
3454 | if (!NILP (selected_window)) |
3455 | { | |
3456 | ow = XWINDOW (selected_window); | |
3457 | if (! NILP (ow->buffer)) | |
3458 | set_marker_both (ow->pointm, ow->buffer, | |
3459 | BUF_PT (XBUFFER (ow->buffer)), | |
3460 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
3461 | } | |
7ab12479 JB |
3462 | |
3463 | selected_window = window; | |
1ae1a37d | 3464 | sf = SELECTED_FRAME (); |
d1755117 RS |
3465 | if (XFRAME (WINDOW_FRAME (w)) != sf) |
3466 | { | |
3467 | XFRAME (WINDOW_FRAME (w))->selected_window = window; | |
3468 | /* Use this rather than Fhandle_switch_frame | |
3469 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
3470 | move around in the state where a minibuffer in a separate | |
3471 | frame is active. */ | |
c869384d | 3472 | Fselect_frame (WINDOW_FRAME (w)); |
d1755117 RS |
3473 | } |
3474 | else | |
1ae1a37d | 3475 | sf->selected_window = window; |
7ab12479 | 3476 | |
14d87dc9 | 3477 | if (NILP (norecord)) |
b7354ddf | 3478 | record_buffer (w->buffer); |
7ab12479 JB |
3479 | Fset_buffer (w->buffer); |
3480 | ||
86e48436 RS |
3481 | XBUFFER (w->buffer)->last_selected_window = window; |
3482 | ||
7ab12479 JB |
3483 | /* Go to the point recorded in the window. |
3484 | This is important when the buffer is in more | |
3485 | than one window. It also matters when | |
3486 | redisplay_window has altered point after scrolling, | |
3487 | because it makes the change only in the window. */ | |
3488 | { | |
3489 | register int new_point = marker_position (w->pointm); | |
3490 | if (new_point < BEGV) | |
3491 | SET_PT (BEGV); | |
a9c95e08 | 3492 | else if (new_point > ZV) |
7ab12479 JB |
3493 | SET_PT (ZV); |
3494 | else | |
3495 | SET_PT (new_point); | |
3496 | } | |
3497 | ||
3498 | windows_or_buffers_changed++; | |
3499 | return window; | |
3500 | } | |
14d87dc9 SM |
3501 | |
3502 | static Lisp_Object | |
3503 | select_window_norecord (window) | |
3504 | Lisp_Object window; | |
3505 | { | |
3506 | return Fselect_window (window, Qt); | |
3507 | } | |
b7354ddf | 3508 | \f |
441a127e RS |
3509 | /* Deiconify the frame containing the window WINDOW, |
3510 | unless it is the selected frame; | |
3511 | then return WINDOW. | |
3512 | ||
3513 | The reason for the exception for the selected frame | |
3514 | is that it seems better not to change the selected frames visibility | |
3515 | merely because of displaying a different buffer in it. | |
3516 | The deiconification is useful when a buffer gets shown in | |
3517 | another frame that you were not using lately. */ | |
d07f802a RS |
3518 | |
3519 | static Lisp_Object | |
3520 | display_buffer_1 (window) | |
3521 | Lisp_Object window; | |
3522 | { | |
1ae1a37d GM |
3523 | Lisp_Object frame = XWINDOW (window)->frame; |
3524 | FRAME_PTR f = XFRAME (frame); | |
177c0ea7 | 3525 | |
d07f802a | 3526 | FRAME_SAMPLE_VISIBILITY (f); |
177c0ea7 | 3527 | |
2d0834cc SM |
3528 | if (EQ (frame, selected_frame)) |
3529 | ; /* Assume the selected frame is already visible enough. */ | |
3530 | else if (minibuf_level > 0 | |
3531 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
3532 | && WINDOW_LIVE_P (minibuf_selected_window) | |
3533 | && EQ (frame, WINDOW_FRAME (XWINDOW (minibuf_selected_window)))) | |
3534 | ; /* Assume the frame from which we invoked the minibuffer is visible. */ | |
3535 | else | |
60117126 RS |
3536 | { |
3537 | if (FRAME_ICONIFIED_P (f)) | |
1ae1a37d | 3538 | Fmake_frame_visible (frame); |
37962e60 | 3539 | else if (FRAME_VISIBLE_P (f)) |
1ae1a37d | 3540 | Fraise_frame (frame); |
60117126 | 3541 | } |
177c0ea7 | 3542 | |
d07f802a RS |
3543 | return window; |
3544 | } | |
3545 | ||
4628f7a4 | 3546 | DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, |
d99b4859 | 3547 | doc: /* Returns non-nil if a buffer named BUFFER-NAME gets a special frame. |
c019856e RS |
3548 | If the value is t, `display-buffer' or `pop-to-buffer' would create a |
3549 | special frame for that buffer using the default frame parameters. | |
3550 | ||
3551 | If the value is a list, it is a list of frame parameters that would be used | |
d99b4859 RS |
3552 | to make a frame for that buffer. |
3553 | The variables `special-display-buffer-names' | |
3554 | and `special-display-regexps' control this. */) | |
fdb82f93 | 3555 | (buffer_name) |
4628f7a4 EN |
3556 | Lisp_Object buffer_name; |
3557 | { | |
3558 | Lisp_Object tem; | |
3559 | ||
b7826503 | 3560 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
3561 | |
3562 | tem = Fmember (buffer_name, Vspecial_display_buffer_names); | |
3563 | if (!NILP (tem)) | |
3564 | return Qt; | |
3565 | ||
3566 | tem = Fassoc (buffer_name, Vspecial_display_buffer_names); | |
3567 | if (!NILP (tem)) | |
3568 | return XCDR (tem); | |
3569 | ||
3570 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) | |
3571 | { | |
3572 | Lisp_Object car = XCAR (tem); | |
3573 | if (STRINGP (car) | |
3574 | && fast_string_match (car, buffer_name) >= 0) | |
3575 | return Qt; | |
3576 | else if (CONSP (car) | |
3577 | && STRINGP (XCAR (car)) | |
3578 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
0057b00a | 3579 | return XCDR (car); |
4628f7a4 EN |
3580 | } |
3581 | return Qnil; | |
177c0ea7 | 3582 | } |
4628f7a4 EN |
3583 | |
3584 | DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, | |
c019856e RS |
3585 | doc: /* Returns non-nil if a buffer named BUFFER-NAME would use the same window. |
3586 | More precisely, if `display-buffer' or `pop-to-buffer' would display | |
3587 | that buffer in the selected window rather than (as usual) in some other window. | |
fdb82f93 PJ |
3588 | See `same-window-buffer-names' and `same-window-regexps'. */) |
3589 | (buffer_name) | |
4628f7a4 EN |
3590 | Lisp_Object buffer_name; |
3591 | { | |
3592 | Lisp_Object tem; | |
3593 | ||
b7826503 | 3594 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
3595 | |
3596 | tem = Fmember (buffer_name, Vsame_window_buffer_names); | |
3597 | if (!NILP (tem)) | |
3598 | return Qt; | |
3599 | ||
3600 | tem = Fassoc (buffer_name, Vsame_window_buffer_names); | |
3601 | if (!NILP (tem)) | |
3602 | return Qt; | |
3603 | ||
3604 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) | |
3605 | { | |
3606 | Lisp_Object car = XCAR (tem); | |
3607 | if (STRINGP (car) | |
3608 | && fast_string_match (car, buffer_name) >= 0) | |
3609 | return Qt; | |
3610 | else if (CONSP (car) | |
3611 | && STRINGP (XCAR (car)) | |
3612 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
3613 | return Qt; | |
3614 | } | |
3615 | return Qnil; | |
3616 | } | |
3617 | ||
fdb82f93 | 3618 | /* Use B so the default is (other-buffer). */ |
53f76081 | 3619 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 3, |
fdb82f93 PJ |
3620 | "BDisplay buffer: \nP", |
3621 | doc: /* Make BUFFER appear in some window but don't select it. | |
473d3c06 | 3622 | BUFFER must be the name of an existing buffer, or, when called from Lisp, |
c2755926 | 3623 | a buffer. |
fdb82f93 PJ |
3624 | If BUFFER is shown already in some window, just use that one, |
3625 | unless the window is the selected window and the optional second | |
3626 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg). | |
3627 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER. | |
3628 | Returns the window displaying BUFFER. | |
079d288f | 3629 | If `display-buffer-reuse-frames' is non-nil, and another frame is currently |
fdb82f93 PJ |
3630 | displaying BUFFER, then simply raise that frame. |
3631 | ||
9a7e95f3 RS |
3632 | The variables `special-display-buffer-names', |
3633 | `special-display-regexps', `same-window-buffer-names', and | |
3634 | `same-window-regexps' customize how certain buffer names are handled. | |
9297079e | 3635 | The latter two take effect only if NOT-THIS-WINDOW is nil. |
fdb82f93 | 3636 | |
3c9bbf9f RS |
3637 | If optional argument FRAME is `visible', check all visible frames |
3638 | for a window to use. | |
3639 | If FRAME is 0, check all visible and iconified frames. | |
3640 | If FRAME is t, check all frames. | |
3641 | If FRAME is a frame, check only that frame. | |
3642 | If FRAME is nil, check only the selected frame | |
fdb82f93 PJ |
3643 | (actually the last nonminibuffer frame), |
3644 | unless `pop-up-frames' or `display-buffer-reuse-frames' is non-nil, | |
3645 | which means search visible and iconified frames. | |
3646 | ||
876e2665 GM |
3647 | If a full-width window on a splittable frame is available to display |
3648 | the buffer, it may be split, subject to the value of the variable | |
3649 | `split-height-threshold'. | |
3650 | ||
fdb82f93 PJ |
3651 | If `even-window-heights' is non-nil, window heights will be evened out |
3652 | if displaying the buffer causes two vertically adjacent windows to be | |
3653 | displayed. */) | |
3654 | (buffer, not_this_window, frame) | |
53f76081 | 3655 | register Lisp_Object buffer, not_this_window, frame; |
7ab12479 | 3656 | { |
aee631c2 | 3657 | register Lisp_Object window, tem, swp; |
1ae1a37d | 3658 | struct frame *f; |
7ab12479 | 3659 | |
aee631c2 | 3660 | swp = Qnil; |
7ab12479 | 3661 | buffer = Fget_buffer (buffer); |
b7826503 | 3662 | CHECK_BUFFER (buffer); |
7ab12479 | 3663 | |
265a9e55 | 3664 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
3665 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
3666 | ||
265a9e55 | 3667 | if (NILP (not_this_window) |
7ab12479 | 3668 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 3669 | return display_buffer_1 (selected_window); |
7ab12479 | 3670 | |
855d8627 RS |
3671 | /* See if the user has specified this buffer should appear |
3672 | in the selected window. */ | |
3673 | if (NILP (not_this_window)) | |
3674 | { | |
aee631c2 RS |
3675 | swp = Fsame_window_p (XBUFFER (buffer)->name); |
3676 | if (!NILP (swp) && !no_switch_window (selected_window)) | |
c63dc4a2 RS |
3677 | { |
3678 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 3679 | return display_buffer_1 (selected_window); |
c63dc4a2 | 3680 | } |
855d8627 RS |
3681 | } |
3682 | ||
079d288f | 3683 | /* If the user wants pop-up-frames or display-buffer-reuse-frames, |
73dc5198 KH |
3684 | look for a window showing BUFFER on any visible or iconified frame. |
3685 | Otherwise search only the current frame. */ | |
53f76081 RS |
3686 | if (! NILP (frame)) |
3687 | tem = frame; | |
9c3da604 GM |
3688 | else if (pop_up_frames |
3689 | || display_buffer_reuse_frames | |
3690 | || last_nonminibuf_frame == 0) | |
73dc5198 KH |
3691 | XSETFASTINT (tem, 0); |
3692 | else | |
73dc5198 | 3693 | XSETFRAME (tem, last_nonminibuf_frame); |
177c0ea7 | 3694 | |
73dc5198 | 3695 | window = Fget_buffer_window (buffer, tem); |
265a9e55 JB |
3696 | if (!NILP (window) |
3697 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
9c3da604 | 3698 | return display_buffer_1 (window); |
7ab12479 | 3699 | |
a90712c2 | 3700 | /* Certain buffer names get special handling. */ |
aee631c2 | 3701 | if (!NILP (Vspecial_display_function) && NILP (swp)) |
a90712c2 | 3702 | { |
4628f7a4 EN |
3703 | tem = Fspecial_display_p (XBUFFER (buffer)->name); |
3704 | if (EQ (tem, Qt)) | |
a90712c2 | 3705 | return call1 (Vspecial_display_function, buffer); |
4628f7a4 EN |
3706 | if (CONSP (tem)) |
3707 | return call2 (Vspecial_display_function, buffer, tem); | |
a90712c2 RS |
3708 | } |
3709 | ||
44fa5b1e JB |
3710 | /* If there are no frames open that have more than a minibuffer, |
3711 | we need to create a new frame. */ | |
3712 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 3713 | { |
a90712c2 | 3714 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
949cf20f | 3715 | Fset_window_buffer (window, buffer, Qnil); |
d07f802a | 3716 | return display_buffer_1 (window); |
7ab12479 | 3717 | } |
7ab12479 | 3718 | |
1ae1a37d | 3719 | f = SELECTED_FRAME (); |
43bad991 | 3720 | if (pop_up_windows |
1ae1a37d | 3721 | || FRAME_MINIBUF_ONLY_P (f) |
cee67da9 RS |
3722 | /* If the current frame is a special display frame, |
3723 | don't try to reuse its windows. */ | |
1ae1a37d | 3724 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f))->dedicated)) |
7ab12479 | 3725 | { |
12cae7c0 KH |
3726 | Lisp_Object frames; |
3727 | ||
37962e60 | 3728 | frames = Qnil; |
1ae1a37d | 3729 | if (FRAME_MINIBUF_ONLY_P (f)) |
74112613 | 3730 | XSETFRAME (frames, last_nonminibuf_frame); |
7ab12479 | 3731 | |
cee67da9 RS |
3732 | /* Note that both Fget_largest_window and Fget_lru_window |
3733 | ignore minibuffers and dedicated windows. | |
3734 | This means they can return nil. */ | |
7ab12479 | 3735 | |
cee67da9 RS |
3736 | /* If the frame we would try to split cannot be split, |
3737 | try other frames. */ | |
1ae1a37d | 3738 | if (FRAME_NO_SPLIT_P (NILP (frames) ? f : last_nonminibuf_frame)) |
cee67da9 RS |
3739 | { |
3740 | /* Try visible frames first. */ | |
3cbb13c8 | 3741 | window = Fget_largest_window (Qvisible, Qt); |
cee67da9 RS |
3742 | /* If that didn't work, try iconified frames. */ |
3743 | if (NILP (window)) | |
3cbb13c8 SM |
3744 | window = Fget_largest_window (make_number (0), Qt); |
3745 | #if 0 /* Don't try windows on other displays. */ | |
cee67da9 | 3746 | if (NILP (window)) |
3cbb13c8 SM |
3747 | window = Fget_largest_window (Qt, Qt); |
3748 | #endif | |
cee67da9 RS |
3749 | } |
3750 | else | |
3cbb13c8 | 3751 | window = Fget_largest_window (frames, Qt); |
cee67da9 | 3752 | |
35ea56c9 MR |
3753 | /* If the largest window is tall enough, full-width, and either eligible |
3754 | for splitting or the only window, split it. */ | |
265a9e55 | 3755 | if (!NILP (window) |
92cca945 | 3756 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
35ea56c9 MR |
3757 | && WINDOW_FULL_WIDTH_P (XWINDOW (window)) |
3758 | && (window_height (window) >= split_height_threshold | |
3759 | || (NILP (XWINDOW (window)->parent))) | |
3760 | && (window_height (window) | |
3761 | >= (2 * window_min_size_2 (XWINDOW (window), 0)))) | |
7ab12479 JB |
3762 | window = Fsplit_window (window, Qnil, Qnil); |
3763 | else | |
3764 | { | |
1942f68f RS |
3765 | Lisp_Object upper, lower, other; |
3766 | ||
3cbb13c8 | 3767 | window = Fget_lru_window (frames, Qt); |
35ea56c9 MR |
3768 | /* If the LRU window is tall enough, and either eligible for splitting |
3769 | and selected or the only window, split it. */ | |
cee67da9 | 3770 | if (!NILP (window) |
92cca945 | 3771 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
35ea56c9 MR |
3772 | && ((EQ (window, selected_window) |
3773 | && window_height (window) >= split_height_threshold) | |
3774 | || (NILP (XWINDOW (window)->parent))) | |
3775 | && (window_height (window) | |
3776 | >= (2 * window_min_size_2 (XWINDOW (window), 0)))) | |
7ab12479 | 3777 | window = Fsplit_window (window, Qnil, Qnil); |
49e99345 SM |
3778 | else |
3779 | window = Fget_lru_window (frames, Qnil); | |
cee67da9 | 3780 | /* If Fget_lru_window returned nil, try other approaches. */ |
48d9379d | 3781 | |
cee67da9 | 3782 | /* Try visible frames first. */ |
48d9379d RS |
3783 | if (NILP (window)) |
3784 | window = Fget_buffer_window (buffer, Qvisible); | |
cee67da9 | 3785 | if (NILP (window)) |
3cbb13c8 | 3786 | window = Fget_largest_window (Qvisible, Qnil); |
cee67da9 | 3787 | /* If that didn't work, try iconified frames. */ |
48d9379d RS |
3788 | if (NILP (window)) |
3789 | window = Fget_buffer_window (buffer, make_number (0)); | |
cee67da9 | 3790 | if (NILP (window)) |
3cbb13c8 SM |
3791 | window = Fget_largest_window (make_number (0), Qnil); |
3792 | ||
3793 | #if 0 /* Don't try frames on other displays. */ | |
48d9379d RS |
3794 | if (NILP (window)) |
3795 | window = Fget_buffer_window (buffer, Qt); | |
cee67da9 | 3796 | if (NILP (window)) |
3cbb13c8 SM |
3797 | window = Fget_largest_window (Qt, Qnil); |
3798 | #endif | |
cee67da9 RS |
3799 | /* As a last resort, make a new frame. */ |
3800 | if (NILP (window)) | |
3801 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
3802 | /* If window appears above or below another, |
3803 | even out their heights. */ | |
cac66e4f | 3804 | other = upper = lower = Qnil; |
1942f68f RS |
3805 | if (!NILP (XWINDOW (window)->prev)) |
3806 | other = upper = XWINDOW (window)->prev, lower = window; | |
3807 | if (!NILP (XWINDOW (window)->next)) | |
3808 | other = lower = XWINDOW (window)->next, upper = window; | |
3809 | if (!NILP (other) | |
6529ed87 | 3810 | && !NILP (Veven_window_heights) |
1942f68f | 3811 | /* Check that OTHER and WINDOW are vertically arrayed. */ |
949cf20f KS |
3812 | && !EQ (XWINDOW (other)->top_line, XWINDOW (window)->top_line) |
3813 | && (XFASTINT (XWINDOW (other)->total_lines) | |
3814 | > XFASTINT (XWINDOW (window)->total_lines))) | |
1942f68f | 3815 | { |
949cf20f KS |
3816 | int total = (XFASTINT (XWINDOW (other)->total_lines) |
3817 | + XFASTINT (XWINDOW (window)->total_lines)); | |
86c8e823 | 3818 | enlarge_window (upper, |
949cf20f | 3819 | total / 2 - XFASTINT (XWINDOW (upper)->total_lines), |
56ebfae2 | 3820 | 0); |
1942f68f | 3821 | } |
7ab12479 JB |
3822 | } |
3823 | } | |
3824 | else | |
3cbb13c8 | 3825 | window = Fget_lru_window (Qnil, Qnil); |
7ab12479 | 3826 | |
949cf20f | 3827 | Fset_window_buffer (window, buffer, Qnil); |
d07f802a | 3828 | return display_buffer_1 (window); |
7ab12479 JB |
3829 | } |
3830 | ||
e661376d KS |
3831 | |
3832 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, | |
3833 | 0, 1, 0, | |
5a1048a5 | 3834 | doc: /* Force all windows to be updated on next redisplay. |
e661376d | 3835 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3836 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
e661376d KS |
3837 | displaying that buffer. */) |
3838 | (object) | |
3839 | Lisp_Object object; | |
3840 | { | |
3841 | if (NILP (object)) | |
3842 | { | |
3843 | windows_or_buffers_changed++; | |
40c6ee74 | 3844 | update_mode_lines++; |
e661376d KS |
3845 | return Qt; |
3846 | } | |
3847 | ||
3848 | if (WINDOWP (object)) | |
3849 | { | |
40c6ee74 | 3850 | struct window *w = XWINDOW (object); |
e661376d | 3851 | mark_window_display_accurate (object, 0); |
40c6ee74 KS |
3852 | w->update_mode_line = Qt; |
3853 | if (BUFFERP (w->buffer)) | |
3854 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
3855 | ++update_mode_lines; | |
e661376d KS |
3856 | return Qt; |
3857 | } | |
0cc1039f | 3858 | |
e661376d KS |
3859 | if (STRINGP (object)) |
3860 | object = Fget_buffer (object); | |
3861 | if (BUFFERP (object) && !NILP (XBUFFER (object)->name)) | |
3862 | { | |
3863 | /* Walk all windows looking for buffer, and force update | |
3864 | of each of those windows. */ | |
3865 | ||
3866 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); | |
3867 | return NILP (object) ? Qnil : Qt; | |
3868 | } | |
3869 | ||
3870 | /* If nothing suitable was found, just return. | |
3871 | We could signal an error, but this feature will typically be used | |
3872 | asynchronously in timers or process sentinels, so we don't. */ | |
3873 | return Qnil; | |
3874 | } | |
3875 | ||
3876 | ||
7ab12479 JB |
3877 | void |
3878 | temp_output_buffer_show (buf) | |
3879 | register Lisp_Object buf; | |
3880 | { | |
3881 | register struct buffer *old = current_buffer; | |
3882 | register Lisp_Object window; | |
3883 | register struct window *w; | |
3884 | ||
bccd3dd1 RS |
3885 | XBUFFER (buf)->directory = current_buffer->directory; |
3886 | ||
7ab12479 | 3887 | Fset_buffer (buf); |
c6367666 | 3888 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3889 | BEGV = BEG; |
3890 | ZV = Z; | |
3891 | SET_PT (BEG); | |
06be4f85 | 3892 | #if 0 /* rms: there should be no reason for this. */ |
b1599b4c | 3893 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
06be4f85 | 3894 | #endif |
7ab12479 JB |
3895 | set_buffer_internal (old); |
3896 | ||
e67a1dea | 3897 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3898 | call1 (Vtemp_buffer_show_function, buf); |
3899 | else | |
3900 | { | |
53f76081 | 3901 | window = Fdisplay_buffer (buf, Qnil, Qnil); |
7ab12479 | 3902 | |
1ae1a37d | 3903 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3904 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3905 | Vminibuf_scroll_window = window; |
3906 | w = XWINDOW (window); | |
d834a2e9 | 3907 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3908 | XSETFASTINT (w->min_hscroll, 0); |
2d0834cc SM |
3909 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3910 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3911 | |
beb4e312 | 3912 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3913 | and its buffer current. */ |
2d0834cc SM |
3914 | |
3915 | if (!NILP (Vrun_hooks) | |
3916 | && !NILP (Fboundp (Qtemp_buffer_show_hook)) | |
3917 | && !NILP (Fsymbol_value (Qtemp_buffer_show_hook))) | |
2cccc823 | 3918 | { |
2d0834cc SM |
3919 | int count = SPECPDL_INDEX (); |
3920 | Lisp_Object prev_window, prev_buffer; | |
3921 | prev_window = selected_window; | |
3922 | XSETBUFFER (prev_buffer, old); | |
0cc1039f | 3923 | |
2d0834cc SM |
3924 | /* Select the window that was chosen, for running the hook. |
3925 | Note: Both Fselect_window and select_window_norecord may | |
3926 | set-buffer to the buffer displayed in the window, | |
3927 | so we need to save the current buffer. --stef */ | |
3928 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3929 | record_unwind_protect (select_window_norecord, prev_window); | |
3930 | Fselect_window (window, Qt); | |
3931 | Fset_buffer (w->buffer); | |
3932 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); | |
3933 | unbind_to (count, Qnil); | |
2cccc823 RS |
3934 | } |
3935 | } | |
7ab12479 JB |
3936 | } |
3937 | \f | |
dfcf069d | 3938 | static void |
7ab12479 JB |
3939 | make_dummy_parent (window) |
3940 | Lisp_Object window; | |
3941 | { | |
cffec418 | 3942 | Lisp_Object new; |
7ab12479 | 3943 | register struct window *o, *p; |
cffec418 | 3944 | int i; |
7ab12479 | 3945 | |
cffec418 | 3946 | o = XWINDOW (window); |
26605be9 | 3947 | p = allocate_window (); |
cffec418 | 3948 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
3949 | ((struct Lisp_Vector *) p)->contents[i] |
3950 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 3951 | XSETWINDOW (new, p); |
7ab12479 | 3952 | |
2a1893f4 SM |
3953 | ++sequence_number; |
3954 | XSETFASTINT (p->sequence_number, sequence_number); | |
7ab12479 JB |
3955 | |
3956 | /* Put new into window structure in place of window */ | |
3957 | replace_window (window, new); | |
3958 | ||
3959 | o->next = Qnil; | |
3960 | o->prev = Qnil; | |
3961 | o->vchild = Qnil; | |
3962 | o->hchild = Qnil; | |
3963 | o->parent = new; | |
3964 | ||
3965 | p->start = Qnil; | |
3966 | p->pointm = Qnil; | |
3967 | p->buffer = Qnil; | |
3968 | } | |
3969 | ||
3970 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
fdb82f93 PJ |
3971 | doc: /* Split WINDOW, putting SIZE lines in the first of the pair. |
3972 | WINDOW defaults to selected one and SIZE to half its size. | |
3973 | If optional third arg HORFLAG is non-nil, split side by side | |
3974 | and put SIZE columns in the first of the pair. In that case, | |
876e2665 | 3975 | SIZE includes that window's scroll bar, or the divider column to its right. |
c2755926 LT |
3976 | Interactively, all arguments are nil. |
3977 | ||
3978 | Returns the newly created window (which is the lower or rightmost one). | |
19ca94ce RS |
3979 | The upper or leftmost window is the original one, and remains selected |
3980 | if it was selected before. | |
3981 | ||
c2755926 | 3982 | See Info node `(elisp)Splitting Windows' for more details and examples.*/) |
fdb82f93 | 3983 | (window, size, horflag) |
77ae0fe3 | 3984 | Lisp_Object window, size, horflag; |
7ab12479 JB |
3985 | { |
3986 | register Lisp_Object new; | |
3987 | register struct window *o, *p; | |
c0807608 | 3988 | FRAME_PTR fo; |
77ae0fe3 | 3989 | register int size_int; |
7ab12479 | 3990 | |
265a9e55 | 3991 | if (NILP (window)) |
7ab12479 JB |
3992 | window = selected_window; |
3993 | else | |
b7826503 | 3994 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3995 | |
3996 | o = XWINDOW (window); | |
c0807608 | 3997 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 3998 | |
77ae0fe3 | 3999 | if (NILP (size)) |
7ab12479 | 4000 | { |
265a9e55 | 4001 | if (!NILP (horflag)) |
c0807608 | 4002 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
4003 | the usable space in columns by two. |
4004 | We round up, since the left-hand window may include | |
4005 | a dividing line, while the right-hand may not. */ | |
949cf20f | 4006 | size_int = (XFASTINT (o->total_cols) + 1) >> 1; |
7ab12479 | 4007 | else |
949cf20f | 4008 | size_int = XFASTINT (o->total_lines) >> 1; |
7ab12479 JB |
4009 | } |
4010 | else | |
4011 | { | |
b7826503 | 4012 | CHECK_NUMBER (size); |
77ae0fe3 | 4013 | size_int = XINT (size); |
7ab12479 JB |
4014 | } |
4015 | ||
4016 | if (MINI_WINDOW_P (o)) | |
4017 | error ("Attempt to split minibuffer window"); | |
233a4a2c GM |
4018 | else if (window_fixed_size_p (o, !NILP (horflag), 0)) |
4019 | error ("Attempt to split fixed-size window"); | |
7ab12479 | 4020 | |
a481b3ea | 4021 | check_min_window_sizes (); |
7ab12479 | 4022 | |
265a9e55 | 4023 | if (NILP (horflag)) |
7ab12479 | 4024 | { |
35ea56c9 MR |
4025 | int window_safe_height = window_min_size_2 (o, 0); |
4026 | ||
4027 | if (size_int < window_safe_height) | |
77ae0fe3 | 4028 | error ("Window height %d too small (after splitting)", size_int); |
35ea56c9 | 4029 | if (size_int + window_safe_height > XFASTINT (o->total_lines)) |
37962e60 | 4030 | error ("Window height %d too small (after splitting)", |
949cf20f | 4031 | XFASTINT (o->total_lines) - size_int); |
265a9e55 JB |
4032 | if (NILP (o->parent) |
4033 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
4034 | { |
4035 | make_dummy_parent (window); | |
4036 | new = o->parent; | |
4037 | XWINDOW (new)->vchild = window; | |
4038 | } | |
4039 | } | |
4040 | else | |
4041 | { | |
35ea56c9 MR |
4042 | int window_safe_width = window_min_size_2 (o, 1); |
4043 | ||
4044 | if (size_int < window_safe_width) | |
77ae0fe3 | 4045 | error ("Window width %d too small (after splitting)", size_int); |
35ea56c9 | 4046 | if (size_int + window_safe_width > XFASTINT (o->total_cols)) |
37962e60 | 4047 | error ("Window width %d too small (after splitting)", |
949cf20f | 4048 | XFASTINT (o->total_cols) - size_int); |
265a9e55 JB |
4049 | if (NILP (o->parent) |
4050 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
4051 | { |
4052 | make_dummy_parent (window); | |
4053 | new = o->parent; | |
4054 | XWINDOW (new)->hchild = window; | |
4055 | } | |
4056 | } | |
4057 | ||
4058 | /* Now we know that window's parent is a vertical combination | |
4059 | if we are dividing vertically, or a horizontal combination | |
4060 | if we are making side-by-side windows */ | |
4061 | ||
4062 | windows_or_buffers_changed++; | |
c0807608 | 4063 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
4064 | new = make_window (); |
4065 | p = XWINDOW (new); | |
4066 | ||
44fa5b1e | 4067 | p->frame = o->frame; |
7ab12479 | 4068 | p->next = o->next; |
265a9e55 | 4069 | if (!NILP (p->next)) |
7ab12479 JB |
4070 | XWINDOW (p->next)->prev = new; |
4071 | p->prev = window; | |
4072 | o->next = new; | |
4073 | p->parent = o->parent; | |
4074 | p->buffer = Qt; | |
5500c422 GM |
4075 | p->window_end_valid = Qnil; |
4076 | bzero (&p->last_cursor, sizeof p->last_cursor); | |
7ab12479 | 4077 | |
949cf20f KS |
4078 | /* Duplicate special geometry settings. */ |
4079 | ||
4080 | p->left_margin_cols = o->left_margin_cols; | |
4081 | p->right_margin_cols = o->right_margin_cols; | |
4082 | p->left_fringe_width = o->left_fringe_width; | |
4083 | p->right_fringe_width = o->right_fringe_width; | |
4084 | p->fringes_outside_margins = o->fringes_outside_margins; | |
4085 | p->scroll_bar_width = o->scroll_bar_width; | |
4086 | p->vertical_scroll_bar_type = o->vertical_scroll_bar_type; | |
4087 | ||
44fa5b1e | 4088 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 4089 | |
265a9e55 | 4090 | if (!NILP (horflag)) |
7ab12479 | 4091 | { |
949cf20f KS |
4092 | p->total_lines = o->total_lines; |
4093 | p->top_line = o->top_line; | |
4094 | XSETFASTINT (p->total_cols, XFASTINT (o->total_cols) - size_int); | |
4095 | XSETFASTINT (o->total_cols, size_int); | |
4096 | XSETFASTINT (p->left_col, XFASTINT (o->left_col) + size_int); | |
4097 | adjust_window_margins (p); | |
4098 | adjust_window_margins (o); | |
7ab12479 JB |
4099 | } |
4100 | else | |
4101 | { | |
949cf20f KS |
4102 | p->left_col = o->left_col; |
4103 | p->total_cols = o->total_cols; | |
4104 | XSETFASTINT (p->total_lines, XFASTINT (o->total_lines) - size_int); | |
4105 | XSETFASTINT (o->total_lines, size_int); | |
4106 | XSETFASTINT (p->top_line, XFASTINT (o->top_line) + size_int); | |
7ab12479 JB |
4107 | } |
4108 | ||
5500c422 GM |
4109 | /* Adjust glyph matrices. */ |
4110 | adjust_glyphs (fo); | |
949cf20f KS |
4111 | |
4112 | Fset_window_buffer (new, o->buffer, Qt); | |
7ab12479 JB |
4113 | return new; |
4114 | } | |
4115 | \f | |
56ebfae2 | 4116 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", |
fdb82f93 PJ |
4117 | doc: /* Make current window ARG lines bigger. |
4118 | From program, optional second arg non-nil means grow sideways ARG columns. | |
f95284d2 | 4119 | Interactively, if an argument is not given, make the window one line bigger. |
5afc696a | 4120 | If HORIZONTAL is non-nil, enlarge horizontally instead of vertically. |
56ebfae2 RS |
4121 | This function can delete windows, even the second window, if they get |
4122 | too small. */) | |
4123 | (arg, horizontal) | |
4124 | Lisp_Object arg, horizontal; | |
7ab12479 | 4125 | { |
b7826503 | 4126 | CHECK_NUMBER (arg); |
56ebfae2 | 4127 | enlarge_window (selected_window, XINT (arg), !NILP (horizontal)); |
543f5fb1 RS |
4128 | |
4129 | if (! NILP (Vwindow_configuration_change_hook)) | |
4130 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
4131 | ||
7ab12479 JB |
4132 | return Qnil; |
4133 | } | |
4134 | ||
56ebfae2 | 4135 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", |
fdb82f93 PJ |
4136 | doc: /* Make current window ARG lines smaller. |
4137 | From program, optional second arg non-nil means shrink sideways arg columns. | |
56a94c1e JB |
4138 | Interactively, if an argument is not given, make the window one line smaller. |
4139 | Only siblings to the right or below are changed. */) | |
56ebfae2 RS |
4140 | (arg, side) |
4141 | Lisp_Object arg, side; | |
7ab12479 | 4142 | { |
b7826503 | 4143 | CHECK_NUMBER (arg); |
56ebfae2 | 4144 | enlarge_window (selected_window, -XINT (arg), !NILP (side)); |
543f5fb1 RS |
4145 | |
4146 | if (! NILP (Vwindow_configuration_change_hook)) | |
4147 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
4148 | ||
7ab12479 JB |
4149 | return Qnil; |
4150 | } | |
4151 | ||
4152 | int | |
4153 | window_height (window) | |
4154 | Lisp_Object window; | |
4155 | { | |
4156 | register struct window *p = XWINDOW (window); | |
949cf20f | 4157 | return WINDOW_TOTAL_LINES (p); |
7ab12479 JB |
4158 | } |
4159 | ||
4160 | int | |
4161 | window_width (window) | |
4162 | Lisp_Object window; | |
4163 | { | |
4164 | register struct window *p = XWINDOW (window); | |
949cf20f | 4165 | return WINDOW_TOTAL_COLS (p); |
7ab12479 JB |
4166 | } |
4167 | ||
177c0ea7 | 4168 | |
7ab12479 | 4169 | #define CURBEG(w) \ |
5afc696a | 4170 | *(horiz_flag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line)) |
7ab12479 JB |
4171 | |
4172 | #define CURSIZE(w) \ | |
5afc696a RS |
4173 | *(horiz_flag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines)) |
4174 | ||
7ab12479 | 4175 | |
5afc696a RS |
4176 | /* Enlarge WINDOW by DELTA. |
4177 | HORIZ_FLAG nonzero means enlarge it horizontally; | |
4178 | zero means do it vertically. | |
233a4a2c | 4179 | |
5afc696a RS |
4180 | Siblings of the selected window are resized to fulfill the size |
4181 | request. If they become too small in the process, they will be | |
56ebfae2 | 4182 | deleted. */ |
7ab12479 | 4183 | |
f984d4fc | 4184 | static void |
56ebfae2 | 4185 | enlarge_window (window, delta, horiz_flag) |
86c8e823 | 4186 | Lisp_Object window; |
56ebfae2 | 4187 | int delta, horiz_flag; |
7ab12479 | 4188 | { |
86c8e823 | 4189 | Lisp_Object parent, next, prev; |
233a4a2c | 4190 | struct window *p; |
3578db3c KR |
4191 | Lisp_Object *sizep; |
4192 | int maximum; | |
5e14b1fc | 4193 | int (*sizefun) P_ ((Lisp_Object)) |
5afc696a | 4194 | = horiz_flag ? window_width : window_height; |
233a4a2c | 4195 | void (*setsizefun) P_ ((Lisp_Object, int, int)) |
5afc696a | 4196 | = (horiz_flag ? set_window_width : set_window_height); |
7ab12479 | 4197 | |
233a4a2c GM |
4198 | /* Check values of window_min_width and window_min_height for |
4199 | validity. */ | |
a481b3ea | 4200 | check_min_window_sizes (); |
7ab12479 | 4201 | |
233a4a2c | 4202 | /* Give up if this window cannot be resized. */ |
5afc696a | 4203 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) |
233a4a2c GM |
4204 | error ("Window is not resizable"); |
4205 | ||
4206 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
4207 | while (1) |
4208 | { | |
4209 | p = XWINDOW (window); | |
4210 | parent = p->parent; | |
177c0ea7 | 4211 | |
265a9e55 | 4212 | if (NILP (parent)) |
7ab12479 | 4213 | { |
5afc696a | 4214 | if (horiz_flag) |
7ab12479 JB |
4215 | error ("No other window to side of this one"); |
4216 | break; | |
4217 | } | |
177c0ea7 | 4218 | |
5afc696a | 4219 | if (horiz_flag |
233a4a2c | 4220 | ? !NILP (XWINDOW (parent)->hchild) |
265a9e55 | 4221 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 4222 | break; |
177c0ea7 | 4223 | |
7ab12479 JB |
4224 | window = parent; |
4225 | } | |
4226 | ||
05c2896a | 4227 | sizep = &CURSIZE (window); |
7ab12479 | 4228 | |
7ab12479 JB |
4229 | { |
4230 | register int maxdelta; | |
7ab12479 | 4231 | |
f95284d2 RS |
4232 | /* Compute the maximum size increment this window can have. */ |
4233 | ||
56ebfae2 RS |
4234 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) |
4235 | /* This is a main window followed by a minibuffer. */ | |
4236 | : !NILP (p->next) ? ((*sizefun) (p->next) | |
4237 | - window_min_size (XWINDOW (p->next), | |
4238 | horiz_flag, 0, 0)) | |
4239 | /* This is a minibuffer following a main window. */ | |
4240 | : !NILP (p->prev) ? ((*sizefun) (p->prev) | |
4241 | - window_min_size (XWINDOW (p->prev), | |
4242 | horiz_flag, 0, 0)) | |
4243 | /* This is a frame with only one window, a minibuffer-only | |
4244 | or a minibufferless frame. */ | |
4245 | : (delta = 0)); | |
7ab12479 JB |
4246 | |
4247 | if (delta > maxdelta) | |
4248 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
4249 | the full frame, or make the only window aside from the |
4250 | minibuffer the full frame. */ | |
7ab12479 | 4251 | delta = maxdelta; |
6b54027b | 4252 | } |
d5783c40 | 4253 | |
5afc696a | 4254 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), horiz_flag, 0, 0)) |
6b54027b | 4255 | { |
543f5fb1 | 4256 | delete_window (window); |
d5783c40 | 4257 | return; |
6b54027b RS |
4258 | } |
4259 | ||
4260 | if (delta == 0) | |
4261 | return; | |
7ab12479 | 4262 | |
f95284d2 | 4263 | /* Find the total we can get from other siblings without deleting them. */ |
db98a733 RS |
4264 | maximum = 0; |
4265 | for (next = p->next; ! NILP (next); next = XWINDOW (next)->next) | |
c1636aa6 | 4266 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
5afc696a | 4267 | horiz_flag, 0, 0); |
56ebfae2 RS |
4268 | for (prev = p->prev; ! NILP (prev); prev = XWINDOW (prev)->prev) |
4269 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), | |
4270 | horiz_flag, 0, 0); | |
db98a733 | 4271 | |
f95284d2 | 4272 | /* If we can get it all from them without deleting them, do so. */ |
c6b530ed | 4273 | if (delta <= maximum) |
7ab12479 | 4274 | { |
db98a733 RS |
4275 | Lisp_Object first_unaffected; |
4276 | Lisp_Object first_affected; | |
233a4a2c | 4277 | int fixed_p; |
db98a733 RS |
4278 | |
4279 | next = p->next; | |
4280 | prev = p->prev; | |
4281 | first_affected = window; | |
4282 | /* Look at one sibling at a time, | |
4283 | moving away from this window in both directions alternately, | |
4284 | and take as much as we can get without deleting that sibling. */ | |
f95284d2 | 4285 | while (delta != 0 |
56ebfae2 | 4286 | && (!NILP (next) || !NILP (prev))) |
db98a733 | 4287 | { |
db98a733 RS |
4288 | if (! NILP (next)) |
4289 | { | |
c1636aa6 | 4290 | int this_one = ((*sizefun) (next) |
233a4a2c | 4291 | - window_min_size (XWINDOW (next), |
5afc696a | 4292 | horiz_flag, 0, &fixed_p)); |
233a4a2c GM |
4293 | if (!fixed_p) |
4294 | { | |
4295 | if (this_one > delta) | |
4296 | this_one = delta; | |
177c0ea7 | 4297 | |
233a4a2c | 4298 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); |
3578db3c | 4299 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 4300 | |
233a4a2c GM |
4301 | delta -= this_one; |
4302 | } | |
177c0ea7 | 4303 | |
db98a733 RS |
4304 | next = XWINDOW (next)->next; |
4305 | } | |
177c0ea7 | 4306 | |
db98a733 RS |
4307 | if (delta == 0) |
4308 | break; | |
177c0ea7 | 4309 | |
56ebfae2 | 4310 | if (! NILP (prev)) |
db98a733 | 4311 | { |
c1636aa6 | 4312 | int this_one = ((*sizefun) (prev) |
233a4a2c | 4313 | - window_min_size (XWINDOW (prev), |
5afc696a | 4314 | horiz_flag, 0, &fixed_p)); |
233a4a2c GM |
4315 | if (!fixed_p) |
4316 | { | |
4317 | if (this_one > delta) | |
4318 | this_one = delta; | |
177c0ea7 | 4319 | |
233a4a2c | 4320 | first_affected = prev; |
177c0ea7 | 4321 | |
233a4a2c | 4322 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); |
3578db3c | 4323 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
4324 | |
4325 | delta -= this_one; | |
4326 | } | |
177c0ea7 | 4327 | |
db98a733 RS |
4328 | prev = XWINDOW (prev)->prev; |
4329 | } | |
4330 | } | |
4331 | ||
233a4a2c GM |
4332 | xassert (delta == 0); |
4333 | ||
db98a733 RS |
4334 | /* Now recalculate the edge positions of all the windows affected, |
4335 | based on the new sizes. */ | |
4336 | first_unaffected = next; | |
4337 | prev = first_affected; | |
4338 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
4339 | prev = next, next = XWINDOW (next)->next) | |
4340 | { | |
3578db3c | 4341 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
4342 | /* This does not change size of NEXT, |
4343 | but it propagates the new top edge to its children */ | |
4344 | (*setsizefun) (next, (*sizefun) (next), 0); | |
4345 | } | |
7ab12479 JB |
4346 | } |
4347 | else | |
4348 | { | |
4349 | register int delta1; | |
4350 | register int opht = (*sizefun) (parent); | |
4351 | ||
3578db3c | 4352 | if (opht <= XINT (*sizep) + delta) |
daf516d3 RS |
4353 | { |
4354 | /* If trying to grow this window to or beyond size of the parent, | |
4355 | just delete all the sibling windows. */ | |
dc1ab1ee | 4356 | Lisp_Object start, tem, next; |
daf516d3 | 4357 | |
dc1ab1ee RS |
4358 | start = XWINDOW (parent)->vchild; |
4359 | if (NILP (start)) | |
4360 | start = XWINDOW (parent)->hchild; | |
daf516d3 | 4361 | |
dc1ab1ee RS |
4362 | /* Delete any siblings that come after WINDOW. */ |
4363 | tem = XWINDOW (window)->next; | |
daf516d3 RS |
4364 | while (! NILP (tem)) |
4365 | { | |
4366 | next = XWINDOW (tem)->next; | |
dc1ab1ee RS |
4367 | delete_window (tem); |
4368 | tem = next; | |
4369 | } | |
4370 | ||
4371 | /* Delete any siblings that come after WINDOW. | |
4372 | Note that if START is not WINDOW, then WINDOW still | |
4373 | Fhas siblings, so WINDOW has not yet replaced its parent. */ | |
4374 | tem = start; | |
4375 | while (! EQ (tem, window)) | |
4376 | { | |
4377 | next = XWINDOW (tem)->next; | |
4378 | delete_window (tem); | |
daf516d3 RS |
4379 | tem = next; |
4380 | } | |
4381 | } | |
7ab12479 | 4382 | else |
233a4a2c GM |
4383 | { |
4384 | /* Otherwise, make delta1 just right so that if we add | |
4385 | delta1 lines to this window and to the parent, and then | |
4386 | shrink the parent back to its original size, the new | |
4387 | proportional size of this window will increase by delta. | |
4388 | ||
4389 | The function size_window will compute the new height h' | |
4390 | of the window from delta1 as: | |
177c0ea7 | 4391 | |
233a4a2c GM |
4392 | e = delta1/n |
4393 | x = delta1 - delta1/n * n for the 1st resizable child | |
4394 | h' = h + e + x | |
4395 | ||
4396 | where n is the number of children that can be resized. | |
4397 | We can ignore x by choosing a delta1 that is a multiple of | |
4398 | n. We want the height of this window to come out as | |
177c0ea7 | 4399 | |
233a4a2c GM |
4400 | h' = h + delta |
4401 | ||
4402 | So, delta1 must be | |
177c0ea7 | 4403 | |
233a4a2c GM |
4404 | h + e = h + delta |
4405 | delta1/n = delta | |
4406 | delta1 = n * delta. | |
4407 | ||
a5731348 | 4408 | The number of children n equals the number of resizable |
233a4a2c | 4409 | children of this window + 1 because we know window itself |
6e0dca3d | 4410 | is resizable (otherwise we would have signalled an error). */ |
233a4a2c GM |
4411 | |
4412 | struct window *w = XWINDOW (window); | |
4413 | Lisp_Object s; | |
4414 | int n = 1; | |
4415 | ||
4416 | for (s = w->next; !NILP (s); s = XWINDOW (s)->next) | |
5afc696a | 4417 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c GM |
4418 | ++n; |
4419 | for (s = w->prev; !NILP (s); s = XWINDOW (s)->prev) | |
5afc696a | 4420 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c GM |
4421 | ++n; |
4422 | ||
4423 | delta1 = n * delta; | |
7ab12479 | 4424 | |
daf516d3 RS |
4425 | /* Add delta1 lines or columns to this window, and to the parent, |
4426 | keeping things consistent while not affecting siblings. */ | |
4427 | XSETINT (CURSIZE (parent), opht + delta1); | |
4428 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
4429 | ||
4430 | /* Squeeze out delta1 lines or columns from our parent, | |
4431 | shriking this window and siblings proportionately. | |
4432 | This brings parent back to correct size. | |
4433 | Delta1 was calculated so this makes this window the desired size, | |
4434 | taking it all out of the siblings. */ | |
4435 | (*setsizefun) (parent, opht, 0); | |
4436 | ||
4437 | } | |
7ab12479 JB |
4438 | } |
4439 | ||
d834a2e9 | 4440 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 4441 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
4442 | |
4443 | /* Adjust glyph matrices. */ | |
4444 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 4445 | } |
c1636aa6 | 4446 | |
0d384044 RS |
4447 | |
4448 | /* Adjust the size of WINDOW by DELTA, moving only its trailing edge. | |
4449 | HORIZ_FLAG nonzero means adjust the width, moving the right edge. | |
4450 | zero means adjust the height, moving the bottom edge. | |
4451 | ||
4452 | Following siblings of the selected window are resized to fulfill | |
4453 | the size request. If they become too small in the process, they | |
4454 | are not deleted; instead, we signal an error. */ | |
4455 | ||
4456 | static void | |
4457 | adjust_window_trailing_edge (window, delta, horiz_flag) | |
4458 | Lisp_Object window; | |
4459 | int delta, horiz_flag; | |
4460 | { | |
4461 | Lisp_Object parent, child; | |
4462 | struct window *p; | |
4463 | Lisp_Object old_config = Fcurrent_window_configuration (Qnil); | |
4464 | int delcount = window_deletion_count; | |
4465 | ||
4466 | /* Check values of window_min_width and window_min_height for | |
4467 | validity. */ | |
4468 | check_min_window_sizes (); | |
4469 | ||
4470 | if (NILP (window)) | |
4471 | window = Fselected_window (); | |
4472 | ||
4473 | CHECK_WINDOW (window); | |
4474 | ||
4475 | /* Give up if this window cannot be resized. */ | |
4476 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) | |
4477 | error ("Window is not resizable"); | |
4478 | ||
4479 | while (1) | |
4480 | { | |
bd99e242 RS |
4481 | Lisp_Object first_parallel = Qnil; |
4482 | ||
c32de52a | 4483 | if (NILP (window)) |
0d384044 | 4484 | { |
5fe0b054 RS |
4485 | /* This happens if WINDOW on the previous iteration was |
4486 | at top level of the window tree. */ | |
0d384044 | 4487 | Fset_window_configuration (old_config); |
c32de52a | 4488 | error ("Specified window edge is fixed"); |
0d384044 RS |
4489 | } |
4490 | ||
c32de52a RS |
4491 | p = XWINDOW (window); |
4492 | parent = p->parent; | |
4493 | ||
bd99e242 RS |
4494 | /* See if this level has windows in parallel in the specified |
4495 | direction. If so, set FIRST_PARALLEL to the first one. */ | |
4496 | if (horiz_flag) | |
4497 | { | |
4498 | if (! NILP (parent) && !NILP (XWINDOW (parent)->vchild)) | |
4499 | first_parallel = XWINDOW (parent)->vchild; | |
5fe0b054 RS |
4500 | else if (NILP (parent) && !NILP (p->next)) |
4501 | { | |
4502 | /* Handle the vertical chain of main window and minibuffer | |
4503 | which has no parent. */ | |
4504 | first_parallel = window; | |
4505 | while (! NILP (XWINDOW (first_parallel)->prev)) | |
4506 | first_parallel = XWINDOW (first_parallel)->prev; | |
4507 | } | |
bd99e242 RS |
4508 | } |
4509 | else | |
4510 | { | |
4511 | if (! NILP (parent) && !NILP (XWINDOW (parent)->hchild)) | |
4512 | first_parallel = XWINDOW (parent)->hchild; | |
4513 | } | |
4514 | ||
c32de52a | 4515 | /* If this level's succession is in the desired dimension, |
5fe0b054 RS |
4516 | and this window is the last one, and there is no higher level, |
4517 | its trailing edge is fixed. */ | |
4518 | if (NILP (XWINDOW (window)->next) && NILP (first_parallel) | |
4519 | && NILP (parent)) | |
c32de52a RS |
4520 | { |
4521 | Fset_window_configuration (old_config); | |
4522 | error ("Specified window edge is fixed"); | |
4523 | } | |
4524 | ||
0d384044 RS |
4525 | /* Don't make this window too small. */ |
4526 | if (XINT (CURSIZE (window)) + delta | |
35ea56c9 | 4527 | < window_min_size_2 (XWINDOW (window), horiz_flag)) |
0d384044 RS |
4528 | { |
4529 | Fset_window_configuration (old_config); | |
4530 | error ("Cannot adjust window size as specified"); | |
4531 | } | |
4532 | ||
4533 | /* Clear out some redisplay caches. */ | |
4534 | XSETFASTINT (p->last_modified, 0); | |
4535 | XSETFASTINT (p->last_overlay_modified, 0); | |
4536 | ||
4537 | /* Adjust this window's edge. */ | |
4538 | XSETINT (CURSIZE (window), | |
4539 | XINT (CURSIZE (window)) + delta); | |
4540 | ||
4541 | /* If this window has following siblings in the desired dimension, | |
bd99e242 RS |
4542 | make them smaller, and exit the loop. |
4543 | ||
0d384044 RS |
4544 | (If we reach the top of the tree and can never do this, |
4545 | we will fail and report an error, above.) */ | |
bd99e242 | 4546 | if (NILP (first_parallel)) |
0d384044 | 4547 | { |
c32de52a | 4548 | if (!NILP (p->next)) |
0d384044 | 4549 | { |
e99c7521 JD |
4550 | /* This may happen for the minibuffer. In that case |
4551 | the window_deletion_count check below does not work. */ | |
a53d44a8 | 4552 | if (XINT (CURSIZE (p->next)) - delta <= 0) |
e99c7521 JD |
4553 | { |
4554 | Fset_window_configuration (old_config); | |
4555 | error ("Cannot adjust window size as specified"); | |
4556 | } | |
4557 | ||
0d384044 RS |
4558 | XSETINT (CURBEG (p->next), |
4559 | XINT (CURBEG (p->next)) + delta); | |
4560 | size_window (p->next, XINT (CURSIZE (p->next)) - delta, | |
5fe0b054 | 4561 | horiz_flag, 0, 1, 0); |
0d384044 RS |
4562 | break; |
4563 | } | |
4564 | } | |
4565 | else | |
4566 | /* Here we have a chain of parallel siblings, in the other dimension. | |
4567 | Change the size of the other siblings. */ | |
bd99e242 | 4568 | for (child = first_parallel; |
0d384044 RS |
4569 | ! NILP (child); |
4570 | child = XWINDOW (child)->next) | |
4571 | if (! EQ (child, window)) | |
4572 | size_window (child, XINT (CURSIZE (child)) + delta, | |
5fe0b054 | 4573 | horiz_flag, 0, 0, 1); |
0d384044 RS |
4574 | |
4575 | window = parent; | |
4576 | } | |
4577 | ||
4578 | /* If we made a window so small it got deleted, | |
4579 | we failed. Report failure. */ | |
4580 | if (delcount != window_deletion_count) | |
4581 | { | |
4582 | Fset_window_configuration (old_config); | |
4583 | error ("Cannot adjust window size as specified"); | |
4584 | } | |
4585 | ||
4586 | /* Adjust glyph matrices. */ | |
4587 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
4588 | } | |
4589 | ||
7ab12479 JB |
4590 | #undef CURBEG |
4591 | #undef CURSIZE | |
4592 | ||
0d384044 RS |
4593 | DEFUN ("adjust-window-trailing-edge", Fadjust_window_trailing_edge, |
4594 | Sadjust_window_trailing_edge, 3, 3, 0, | |
4595 | doc: /* Adjust the bottom or right edge of WINDOW by DELTA. | |
56ebfae2 | 4596 | If HORIZONTAL is non-nil, that means adjust the width, moving the right edge. |
0d384044 RS |
4597 | Otherwise, adjust the height, moving the bottom edge. |
4598 | ||
4599 | Following siblings of the selected window are resized to fulfill | |
4600 | the size request. If they become too small in the process, they | |
4601 | are not deleted; instead, we signal an error. */) | |
4602 | (window, delta, horizontal) | |
4603 | Lisp_Object window, delta, horizontal; | |
4604 | { | |
4605 | CHECK_NUMBER (delta); | |
4606 | adjust_window_trailing_edge (window, XINT (delta), !NILP (horizontal)); | |
4607 | ||
4608 | if (! NILP (Vwindow_configuration_change_hook)) | |
4609 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
4610 | ||
4611 | return Qnil; | |
4612 | } | |
4613 | ||
5500c422 | 4614 | |
f984d4fc GM |
4615 | \f |
4616 | /*********************************************************************** | |
4617 | Resizing Mini-Windows | |
4618 | ***********************************************************************/ | |
4619 | ||
4620 | static void shrink_window_lowest_first P_ ((struct window *, int)); | |
f984d4fc | 4621 | |
43b4a21f GM |
4622 | enum save_restore_action |
4623 | { | |
4624 | CHECK_ORIG_SIZES, | |
4625 | SAVE_ORIG_SIZES, | |
4626 | RESTORE_ORIG_SIZES | |
4627 | }; | |
4628 | ||
177c0ea7 | 4629 | static int save_restore_orig_size P_ ((struct window *, |
43b4a21f | 4630 | enum save_restore_action)); |
f984d4fc GM |
4631 | |
4632 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
4633 | from lowest windows first. */ | |
4634 | ||
4635 | static void | |
4636 | shrink_window_lowest_first (w, height) | |
4637 | struct window *w; | |
4638 | int height; | |
4639 | { | |
4640 | struct window *c; | |
4641 | Lisp_Object child; | |
4642 | int old_height; | |
4643 | ||
4644 | xassert (!MINI_WINDOW_P (w)); | |
4645 | ||
4646 | /* Set redisplay hints. */ | |
4647 | XSETFASTINT (w->last_modified, 0); | |
4648 | XSETFASTINT (w->last_overlay_modified, 0); | |
4649 | windows_or_buffers_changed++; | |
4650 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
4651 | ||
949cf20f KS |
4652 | old_height = XFASTINT (w->total_lines); |
4653 | XSETFASTINT (w->total_lines, height); | |
f984d4fc GM |
4654 | |
4655 | if (!NILP (w->hchild)) | |
4656 | { | |
4657 | for (child = w->hchild; !NILP (child); child = c->next) | |
4658 | { | |
4659 | c = XWINDOW (child); | |
949cf20f | 4660 | c->top_line = w->top_line; |
f984d4fc GM |
4661 | shrink_window_lowest_first (c, height); |
4662 | } | |
4663 | } | |
4664 | else if (!NILP (w->vchild)) | |
4665 | { | |
4666 | Lisp_Object last_child; | |
4667 | int delta = old_height - height; | |
4668 | int last_top; | |
6bbd7a29 GM |
4669 | |
4670 | last_child = Qnil; | |
177c0ea7 | 4671 | |
f984d4fc GM |
4672 | /* Find the last child. We are taking space from lowest windows |
4673 | first, so we iterate over children from the last child | |
4674 | backwards. */ | |
4675 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) | |
4676 | last_child = child; | |
4677 | ||
4678 | /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */ | |
4679 | for (child = last_child; delta && !NILP (child); child = c->prev) | |
4680 | { | |
4681 | int this_one; | |
177c0ea7 | 4682 | |
f984d4fc | 4683 | c = XWINDOW (child); |
949cf20f | 4684 | this_one = XFASTINT (c->total_lines) - MIN_SAFE_WINDOW_HEIGHT; |
f984d4fc GM |
4685 | |
4686 | if (this_one > delta) | |
4687 | this_one = delta; | |
4688 | ||
949cf20f | 4689 | shrink_window_lowest_first (c, XFASTINT (c->total_lines) - this_one); |
f984d4fc GM |
4690 | delta -= this_one; |
4691 | } | |
4692 | ||
4693 | /* Compute new positions. */ | |
949cf20f | 4694 | last_top = XINT (w->top_line); |
f984d4fc GM |
4695 | for (child = w->vchild; !NILP (child); child = c->next) |
4696 | { | |
4697 | c = XWINDOW (child); | |
949cf20f KS |
4698 | c->top_line = make_number (last_top); |
4699 | shrink_window_lowest_first (c, XFASTINT (c->total_lines)); | |
4700 | last_top += XFASTINT (c->total_lines); | |
f984d4fc GM |
4701 | } |
4702 | } | |
4703 | } | |
4704 | ||
4705 | ||
43b4a21f GM |
4706 | /* Save, restore, or check positions and sizes in the window tree |
4707 | rooted at W. ACTION says what to do. | |
f984d4fc | 4708 | |
949cf20f KS |
4709 | If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and |
4710 | orig_total_lines members are valid for all windows in the window | |
4711 | tree. Value is non-zero if they are valid. | |
177c0ea7 | 4712 | |
43b4a21f | 4713 | If ACTION is SAVE_ORIG_SIZES, save members top and height in |
949cf20f | 4714 | orig_top_line and orig_total_lines for all windows in the tree. |
43b4a21f | 4715 | |
949cf20f KS |
4716 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from values |
4717 | stored in orig_top_line and orig_total_lines for all windows. */ | |
43b4a21f GM |
4718 | |
4719 | static int | |
4720 | save_restore_orig_size (w, action) | |
f984d4fc | 4721 | struct window *w; |
43b4a21f | 4722 | enum save_restore_action action; |
f984d4fc | 4723 | { |
43b4a21f GM |
4724 | int success_p = 1; |
4725 | ||
f984d4fc GM |
4726 | while (w) |
4727 | { | |
4728 | if (!NILP (w->hchild)) | |
43b4a21f GM |
4729 | { |
4730 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
4731 | success_p = 0; | |
4732 | } | |
f984d4fc | 4733 | else if (!NILP (w->vchild)) |
43b4a21f GM |
4734 | { |
4735 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
4736 | success_p = 0; | |
4737 | } | |
177c0ea7 | 4738 | |
43b4a21f | 4739 | switch (action) |
f984d4fc | 4740 | { |
43b4a21f | 4741 | case CHECK_ORIG_SIZES: |
949cf20f | 4742 | if (!INTEGERP (w->orig_top_line) || !INTEGERP (w->orig_total_lines)) |
43b4a21f GM |
4743 | return 0; |
4744 | break; | |
4745 | ||
4746 | case SAVE_ORIG_SIZES: | |
949cf20f KS |
4747 | w->orig_top_line = w->top_line; |
4748 | w->orig_total_lines = w->total_lines; | |
43b4a21f GM |
4749 | XSETFASTINT (w->last_modified, 0); |
4750 | XSETFASTINT (w->last_overlay_modified, 0); | |
4751 | break; | |
4752 | ||
4753 | case RESTORE_ORIG_SIZES: | |
949cf20f KS |
4754 | xassert (INTEGERP (w->orig_top_line) && INTEGERP (w->orig_total_lines)); |
4755 | w->top_line = w->orig_top_line; | |
4756 | w->total_lines = w->orig_total_lines; | |
4757 | w->orig_total_lines = w->orig_top_line = Qnil; | |
43b4a21f GM |
4758 | XSETFASTINT (w->last_modified, 0); |
4759 | XSETFASTINT (w->last_overlay_modified, 0); | |
4760 | break; | |
4761 | ||
4762 | default: | |
4763 | abort (); | |
f984d4fc | 4764 | } |
43b4a21f | 4765 | |
f984d4fc GM |
4766 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
4767 | } | |
43b4a21f GM |
4768 | |
4769 | return success_p; | |
f984d4fc GM |
4770 | } |
4771 | ||
4772 | ||
4773 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
4774 | without deleting other windows. */ | |
4775 | ||
4776 | void | |
4777 | grow_mini_window (w, delta) | |
4778 | struct window *w; | |
4779 | int delta; | |
4780 | { | |
4781 | struct frame *f = XFRAME (w->frame); | |
4782 | struct window *root; | |
177c0ea7 | 4783 | |
f984d4fc GM |
4784 | xassert (MINI_WINDOW_P (w)); |
4785 | xassert (delta >= 0); | |
177c0ea7 | 4786 | |
f984d4fc GM |
4787 | /* Check values of window_min_width and window_min_height for |
4788 | validity. */ | |
4789 | check_min_window_sizes (); | |
4790 | ||
4791 | /* Compute how much we can enlarge the mini-window without deleting | |
4792 | other windows. */ | |
4793 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4794 | if (delta) | |
4795 | { | |
4796 | int min_height = window_min_size (root, 0, 0, 0); | |
949cf20f | 4797 | if (XFASTINT (root->total_lines) - delta < min_height) |
8b8bd9c6 | 4798 | /* Note that the root window may already be smaller than |
eafa3196 | 4799 | min_height. */ |
949cf20f | 4800 | delta = max (0, XFASTINT (root->total_lines) - min_height); |
f984d4fc | 4801 | } |
177c0ea7 | 4802 | |
f984d4fc GM |
4803 | if (delta) |
4804 | { | |
4805 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
4806 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
4807 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
4808 | |
4809 | /* Shrink other windows. */ | |
949cf20f | 4810 | shrink_window_lowest_first (root, XFASTINT (root->total_lines) - delta); |
f984d4fc GM |
4811 | |
4812 | /* Grow the mini-window. */ | |
949cf20f KS |
4813 | w->top_line = make_number (XFASTINT (root->top_line) + XFASTINT (root->total_lines)); |
4814 | w->total_lines = make_number (XFASTINT (w->total_lines) + delta); | |
f984d4fc GM |
4815 | XSETFASTINT (w->last_modified, 0); |
4816 | XSETFASTINT (w->last_overlay_modified, 0); | |
177c0ea7 | 4817 | |
f984d4fc GM |
4818 | adjust_glyphs (f); |
4819 | } | |
4820 | } | |
4821 | ||
4822 | ||
86c8e823 GM |
4823 | /* Shrink mini-window W. If there is recorded info about window sizes |
4824 | before a call to grow_mini_window, restore recorded window sizes. | |
4825 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
4826 | line. */ | |
f984d4fc GM |
4827 | |
4828 | void | |
4829 | shrink_mini_window (w) | |
4830 | struct window *w; | |
4831 | { | |
4832 | struct frame *f = XFRAME (w->frame); | |
4833 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4834 | ||
43b4a21f | 4835 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 4836 | { |
43b4a21f | 4837 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
4838 | adjust_glyphs (f); |
4839 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
4840 | windows_or_buffers_changed = 1; | |
4841 | } | |
949cf20f | 4842 | else if (XFASTINT (w->total_lines) > 1) |
86c8e823 | 4843 | { |
0130fe1a GM |
4844 | /* Distribute the additional lines of the mini-window |
4845 | among the other windows. */ | |
86c8e823 GM |
4846 | Lisp_Object window; |
4847 | XSETWINDOW (window, w); | |
56ebfae2 | 4848 | enlarge_window (window, 1 - XFASTINT (w->total_lines), 0); |
86c8e823 | 4849 | } |
f984d4fc GM |
4850 | } |
4851 | ||
4852 | ||
4853 | \f | |
5500c422 GM |
4854 | /* Mark window cursors off for all windows in the window tree rooted |
4855 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4856 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4857 | the frame are cleared. */ | |
4858 | ||
4859 | void | |
4860 | mark_window_cursors_off (w) | |
4861 | struct window *w; | |
4862 | { | |
4863 | while (w) | |
4864 | { | |
4865 | if (!NILP (w->hchild)) | |
4866 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4867 | else if (!NILP (w->vchild)) | |
4868 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
4869 | else | |
4870 | w->phys_cursor_on_p = 0; | |
4871 | ||
4872 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4873 | } | |
4874 | } | |
4875 | ||
4876 | ||
e9c195b1 | 4877 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4878 | |
4879 | int | |
4880 | window_internal_height (w) | |
4881 | struct window *w; | |
4882 | { | |
949cf20f | 4883 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4884 | |
e9c195b1 GM |
4885 | if (!MINI_WINDOW_P (w)) |
4886 | { | |
4887 | if (!NILP (w->parent) | |
4888 | || !NILP (w->vchild) | |
4889 | || !NILP (w->hchild) | |
4890 | || !NILP (w->next) | |
4891 | || !NILP (w->prev) | |
4892 | || WINDOW_WANTS_MODELINE_P (w)) | |
4893 | --ht; | |
7ab12479 | 4894 | |
e9c195b1 GM |
4895 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4896 | --ht; | |
4897 | } | |
7ab12479 JB |
4898 | |
4899 | return ht; | |
4900 | } | |
4901 | ||
535e0b8e JB |
4902 | |
4903 | /* Return the number of columns in W. | |
a3c87d4e | 4904 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 4905 | separating W from the sibling to its right. */ |
5500c422 | 4906 | |
535e0b8e | 4907 | int |
949cf20f | 4908 | window_box_text_cols (w) |
535e0b8e JB |
4909 | struct window *w; |
4910 | { | |
5500c422 | 4911 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
949cf20f | 4912 | int width = XINT (w->total_cols); |
535e0b8e | 4913 | |
949cf20f | 4914 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) |
5500c422 | 4915 | /* Scroll bars occupy a few columns. */ |
949cf20f KS |
4916 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); |
4917 | else if (!FRAME_WINDOW_P (f) | |
4918 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
5500c422 GM |
4919 | /* The column of `|' characters separating side-by-side windows |
4920 | occupies one column only. */ | |
4921 | width -= 1; | |
4922 | ||
5500c422 | 4923 | if (FRAME_WINDOW_P (f)) |
949cf20f KS |
4924 | /* On window-systems, fringes and display margins cannot be |
4925 | used for normal text. */ | |
4926 | width -= (WINDOW_FRINGE_COLS (w) | |
4927 | + WINDOW_LEFT_MARGIN_COLS (w) | |
4928 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
111e5992 RS |
4929 | |
4930 | return width; | |
535e0b8e JB |
4931 | } |
4932 | ||
5500c422 GM |
4933 | \f |
4934 | /************************************************************************ | |
4935 | Window Scrolling | |
4936 | ***********************************************************************/ | |
535e0b8e | 4937 | |
5500c422 | 4938 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4939 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4940 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4941 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4942 | means don't signal an error if we try to move over BEGV or ZV, | |
4943 | respectively. */ | |
7ab12479 | 4944 | |
101d1605 RS |
4945 | static void |
4946 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
4947 | Lisp_Object window; |
4948 | int n; | |
101d1605 | 4949 | int whole; |
f8026fd8 | 4950 | int noerror; |
5500c422 | 4951 | { |
cba59f77 RS |
4952 | immediate_quit = 1; |
4953 | ||
5500c422 GM |
4954 | /* If we must, use the pixel-based version which is much slower than |
4955 | the line-based one but can handle varying line heights. */ | |
4956 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
4957 | window_scroll_pixel_based (window, n, whole, noerror); | |
4958 | else | |
4959 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4960 | |
4961 | immediate_quit = 0; | |
5500c422 GM |
4962 | } |
4963 | ||
4964 | ||
4965 | /* Implementation of window_scroll that works based on pixel line | |
4966 | heights. See the comment of window_scroll for parameter | |
4967 | descriptions. */ | |
4968 | ||
4969 | static void | |
4970 | window_scroll_pixel_based (window, n, whole, noerror) | |
4971 | Lisp_Object window; | |
4972 | int n; | |
4973 | int whole; | |
4974 | int noerror; | |
4975 | { | |
4976 | struct it it; | |
4977 | struct window *w = XWINDOW (window); | |
4978 | struct text_pos start; | |
5500c422 | 4979 | int this_scroll_margin; |
5cdb3cf3 MB |
4980 | /* True if we fiddled the window vscroll field without really scrolling. */ |
4981 | int vscrolled = 0; | |
5a857365 | 4982 | int x, y, rtop, rbot, rowh, vpos; |
5500c422 GM |
4983 | |
4984 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
177c0ea7 | 4985 | |
5500c422 | 4986 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4987 | the screen. Allow PT to be partially visible, otherwise |
4988 | something like (scroll-down 1) with PT in the line before | |
4989 | the partially visible one would recenter. */ | |
5a857365 KS |
4990 | |
4991 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 GM |
4992 | { |
4993 | /* Move backward half the height of the window. Performance note: | |
4994 | vmotion used here is about 10% faster, but would give wrong | |
4995 | results for variable height lines. */ | |
4996 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4997 | it.current_y = it.last_visible_y; | |
f204989e | 4998 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4999 | |
5500c422 GM |
5000 | /* The function move_iterator_vertically may move over more than |
5001 | the specified y-distance. If it->w is small, e.g. a | |
5002 | mini-buffer window, we may end up in front of the window's | |
5003 | display area. This is the case when Start displaying at the | |
5004 | start of the line containing PT in this case. */ | |
5005 | if (it.current_y <= 0) | |
5006 | { | |
5007 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 5008 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
5009 | it.current_y = 0; |
5010 | } | |
5011 | ||
5012 | start = it.current.pos; | |
5013 | } | |
e56263e5 KS |
5014 | else if (auto_window_vscroll_p) |
5015 | { | |
5a857365 | 5016 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
5017 | { |
5018 | int px; | |
5019 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
5020 | if (whole) | |
e856c216 KS |
5021 | dy = max ((window_box_height (w) |
5022 | - next_screen_context_lines * dy), | |
5023 | dy); | |
e56263e5 KS |
5024 | dy *= n; |
5025 | ||
5a857365 | 5026 | if (n < 0) |
e56263e5 | 5027 | { |
5a857365 KS |
5028 | /* Only vscroll backwards if already vscrolled forwards. */ |
5029 | if (w->vscroll < 0 && rtop > 0) | |
5030 | { | |
5031 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
5032 | Fset_window_vscroll (window, make_number (px), Qt); | |
5033 | return; | |
5034 | } | |
e56263e5 | 5035 | } |
5a857365 | 5036 | if (n > 0) |
e56263e5 | 5037 | { |
5a857365 KS |
5038 | /* Do vscroll if already vscrolled or only display line. */ |
5039 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
5040 | { | |
5041 | px = max (0, -w->vscroll + min (rbot, dy)); | |
5042 | Fset_window_vscroll (window, make_number (px), Qt); | |
5043 | return; | |
5044 | } | |
5045 | ||
5046 | /* Maybe modify window start instead of scrolling. */ | |
5047 | if (rbot > 0 || w->vscroll < 0) | |
5048 | { | |
5049 | int spos; | |
5050 | ||
5051 | Fset_window_vscroll (window, make_number (0), Qt); | |
5052 | /* If there are other text lines above the current row, | |
5053 | move window start to current row. Else to next row. */ | |
5054 | if (rbot > 0) | |
5055 | spos = XINT (Fline_beginning_position (Qnil)); | |
5056 | else | |
5057 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
5058 | set_marker_restricted (w->start, make_number (spos), | |
5059 | w->buffer); | |
5060 | w->start_at_line_beg = Qt; | |
5061 | w->update_mode_line = Qt; | |
5062 | XSETFASTINT (w->last_modified, 0); | |
5063 | XSETFASTINT (w->last_overlay_modified, 0); | |
5064 | /* Set force_start so that redisplay_window will run the | |
5065 | window-scroll-functions. */ | |
5066 | w->force_start = Qt; | |
5067 | return; | |
5068 | } | |
e56263e5 KS |
5069 | } |
5070 | } | |
5a857365 | 5071 | /* Cancel previous vscroll. */ |
e56263e5 KS |
5072 | Fset_window_vscroll (window, make_number (0), Qt); |
5073 | } | |
5500c422 | 5074 | |
d0c38d63 | 5075 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
5076 | point in the same window line as it is now, so get that line. */ |
5077 | if (!NILP (Vscroll_preserve_screen_position)) | |
5078 | { | |
c525d842 CY |
5079 | /* We preserve the goal pixel coordinate across consecutive |
5080 | calls to scroll-up or scroll-down. This avoids the | |
5081 | possibility of point becoming "stuck" on a tall line when | |
5082 | scrolling by one line. */ | |
66fe93d1 | 5083 | if (window_scroll_pixel_based_preserve_y < 0 |
7d619454 SM |
5084 | || (!EQ (current_kboard->Vlast_command, Qscroll_up) |
5085 | && !EQ (current_kboard->Vlast_command, Qscroll_down))) | |
c525d842 CY |
5086 | { |
5087 | start_display (&it, w, start); | |
5088 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 5089 | window_scroll_pixel_based_preserve_y = it.current_y; |
c525d842 | 5090 | } |
5500c422 GM |
5091 | } |
5092 | else | |
66fe93d1 | 5093 | window_scroll_pixel_based_preserve_y = -1; |
5500c422 GM |
5094 | |
5095 | /* Move iterator it from start the specified distance forward or | |
5096 | backward. The result is the new window start. */ | |
5097 | start_display (&it, w, start); | |
5098 | if (whole) | |
5099 | { | |
e856c216 KS |
5100 | int start_pos = IT_CHARPOS (it); |
5101 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
5102 | dy = max ((window_box_height (w) | |
5103 | - next_screen_context_lines * dy), | |
5104 | dy) * n; | |
d72340d4 GM |
5105 | |
5106 | /* Note that move_it_vertically always moves the iterator to the | |
5107 | start of a line. So, if the last line doesn't have a newline, | |
5108 | we would end up at the start of the line ending at ZV. */ | |
5109 | if (dy <= 0) | |
e856c216 KS |
5110 | { |
5111 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 5112 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
5113 | looking at an image that is taller that the window height. */ |
5114 | while (start_pos == IT_CHARPOS (it) | |
5115 | && start_pos > BEGV) | |
5116 | move_it_by_lines (&it, -1, 1); | |
5117 | } | |
d72340d4 | 5118 | else if (dy > 0) |
bed83ee4 | 5119 | { |
bed83ee4 KS |
5120 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
5121 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 5122 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
5123 | looking at an image that is taller that the window height. */ |
5124 | while (start_pos == IT_CHARPOS (it) | |
5125 | && start_pos < ZV) | |
5126 | move_it_by_lines (&it, 1, 1); | |
5127 | } | |
5500c422 GM |
5128 | } |
5129 | else | |
5130 | move_it_by_lines (&it, n, 1); | |
5131 | ||
96ae58c8 RS |
5132 | /* We failed if we find ZV is already on the screen (scrolling up, |
5133 | means there's nothing past the end), or if we can't start any | |
5134 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 5135 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 5136 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 5137 | { |
5cdb3cf3 MB |
5138 | if (IT_CHARPOS (it) == ZV) |
5139 | { | |
07ce8b53 RS |
5140 | if (it.current_y < it.last_visible_y |
5141 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 5142 | > it.last_visible_y)) |
a74eca50 GM |
5143 | { |
5144 | /* The last line was only partially visible, make it fully | |
5145 | visible. */ | |
5146 | w->vscroll = (it.last_visible_y | |
5147 | - it.current_y + it.max_ascent + it.max_descent); | |
5148 | adjust_glyphs (it.f); | |
5149 | } | |
5cdb3cf3 MB |
5150 | else if (noerror) |
5151 | return; | |
cf402f3f | 5152 | else if (n < 0) /* could happen with empty buffers */ |
ba96a5cf | 5153 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 | 5154 | else |
ba96a5cf | 5155 | xsignal0 (Qend_of_buffer); |
5cdb3cf3 | 5156 | } |
5500c422 | 5157 | else |
5cdb3cf3 MB |
5158 | { |
5159 | if (w->vscroll != 0) | |
5160 | /* The first line was only partially visible, make it fully | |
5161 | visible. */ | |
5162 | w->vscroll = 0; | |
5163 | else if (noerror) | |
5164 | return; | |
5165 | else | |
ba96a5cf | 5166 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 MB |
5167 | } |
5168 | ||
5169 | /* If control gets here, then we vscrolled. */ | |
5170 | ||
5171 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
5172 | ||
5173 | /* Don't try to change the window start below. */ | |
5174 | vscrolled = 1; | |
5500c422 GM |
5175 | } |
5176 | ||
5cdb3cf3 MB |
5177 | if (! vscrolled) |
5178 | { | |
dad67609 RS |
5179 | int pos = IT_CHARPOS (it); |
5180 | int bytepos; | |
e68def1e AS |
5181 | |
5182 | /* If in the middle of a multi-glyph character move forward to | |
5183 | the next character. */ | |
5184 | if (in_display_vector_p (&it)) | |
5185 | { | |
5186 | ++pos; | |
5187 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
5188 | } | |
5189 | ||
5cdb3cf3 | 5190 | /* Set the window start, and set up the window for redisplay. */ |
dad67609 | 5191 | set_marker_restricted (w->start, make_number (pos), |
5cdb3cf3 | 5192 | w->buffer); |
dad67609 RS |
5193 | bytepos = XMARKER (w->start)->bytepos; |
5194 | w->start_at_line_beg = ((pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n') | |
5195 | ? Qt : Qnil); | |
5cdb3cf3 MB |
5196 | w->update_mode_line = Qt; |
5197 | XSETFASTINT (w->last_modified, 0); | |
5198 | XSETFASTINT (w->last_overlay_modified, 0); | |
5199 | /* Set force_start so that redisplay_window will run the | |
5200 | window-scroll-functions. */ | |
5201 | w->force_start = Qt; | |
5202 | } | |
177c0ea7 | 5203 | |
dc297565 RS |
5204 | /* The rest of this function uses current_y in a nonstandard way, |
5205 | not including the height of the header line if any. */ | |
5500c422 | 5206 | it.current_y = it.vpos = 0; |
177c0ea7 | 5207 | |
940f53e5 RS |
5208 | /* Move PT out of scroll margins. |
5209 | This code wants current_y to be zero at the window start position | |
5210 | even if there is a header line. */ | |
5211 | this_scroll_margin = max (0, scroll_margin); | |
5212 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); | |
5213 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); | |
5214 | ||
5215 | if (n > 0) | |
5500c422 | 5216 | { |
940f53e5 RS |
5217 | /* We moved the window start towards ZV, so PT may be now |
5218 | in the scroll margin at the top. */ | |
5219 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
5220 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
5221 | && (NILP (Vscroll_preserve_screen_position) | |
5222 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5223 | /* We found PT at a legitimate height. Leave it alone. */ |
5224 | ; | |
66fe93d1 | 5225 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 5226 | { |
fa3c3426 RS |
5227 | /* If we have a header line, take account of it. |
5228 | This is necessary because we set it.current_y to 0, above. */ | |
c525d842 | 5229 | move_it_to (&it, -1, -1, |
66fe93d1 LT |
5230 | window_scroll_pixel_based_preserve_y |
5231 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c525d842 | 5232 | -1, MOVE_TO_Y); |
940f53e5 RS |
5233 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5234 | } | |
5235 | else | |
5500c422 | 5236 | { |
5500c422 | 5237 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
5238 | { |
5239 | int prev = it.current_y; | |
5240 | move_it_by_lines (&it, 1, 1); | |
5241 | if (prev == it.current_y) | |
5242 | break; | |
5243 | } | |
5500c422 GM |
5244 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5245 | } | |
940f53e5 RS |
5246 | } |
5247 | else if (n < 0) | |
5248 | { | |
5249 | int charpos, bytepos; | |
aed328bf | 5250 | int partial_p; |
940f53e5 | 5251 | |
66fe93d1 LT |
5252 | /* Save our position, for the |
5253 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
5254 | charpos = IT_CHARPOS (it); |
5255 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 5256 | |
940f53e5 RS |
5257 | /* We moved the window start towards BEGV, so PT may be now |
5258 | in the scroll margin at the bottom. */ | |
5259 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
5260 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
5261 | - this_scroll_margin - 1), | |
5262 | -1, | |
940f53e5 RS |
5263 | MOVE_TO_POS | MOVE_TO_Y); |
5264 | ||
aed328bf KS |
5265 | /* Save our position, in case it's correct. */ |
5266 | charpos = IT_CHARPOS (it); | |
5267 | bytepos = IT_BYTEPOS (it); | |
5268 | ||
5269 | /* See if point is on a partially visible line at the end. */ | |
5270 | if (it.what == IT_EOB) | |
5271 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
5272 | else | |
5273 | { | |
5274 | move_it_by_lines (&it, 1, 1); | |
5275 | partial_p = it.current_y > it.last_visible_y; | |
5276 | } | |
5277 | ||
bdf4ec93 RS |
5278 | if (charpos == PT && !partial_p |
5279 | && (NILP (Vscroll_preserve_screen_position) | |
5280 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5281 | /* We found PT before we found the display margin, so PT is ok. */ |
5282 | ; | |
66fe93d1 | 5283 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 RS |
5284 | { |
5285 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5286 | start_display (&it, w, start); | |
c525d842 CY |
5287 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
5288 | here because we called start_display again and did not | |
5289 | alter it.current_y this time. */ | |
66fe93d1 LT |
5290 | move_it_to (&it, -1, -1, window_scroll_pixel_based_preserve_y, -1, |
5291 | MOVE_TO_Y); | |
940f53e5 RS |
5292 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5293 | } | |
5294 | else | |
5295 | { | |
aed328bf | 5296 | if (partial_p) |
5cdb3cf3 MB |
5297 | /* The last line was only partially visible, so back up two |
5298 | lines to make sure we're on a fully visible line. */ | |
5299 | { | |
5300 | move_it_by_lines (&it, -2, 0); | |
5301 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
5302 | } | |
5303 | else | |
5304 | /* No, the position we saved is OK, so use it. */ | |
5305 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
5306 | } |
5307 | } | |
5308 | } | |
5309 | ||
5310 | ||
5311 | /* Implementation of window_scroll that works based on screen lines. | |
5312 | See the comment of window_scroll for parameter descriptions. */ | |
5313 | ||
5314 | static void | |
5315 | window_scroll_line_based (window, n, whole, noerror) | |
5316 | Lisp_Object window; | |
5317 | int n; | |
5318 | int whole; | |
5319 | int noerror; | |
7ab12479 JB |
5320 | { |
5321 | register struct window *w = XWINDOW (window); | |
5500c422 | 5322 | register int opoint = PT, opoint_byte = PT_BYTE; |
b73ea88e | 5323 | register int pos, pos_byte; |
7ab12479 JB |
5324 | register int ht = window_internal_height (w); |
5325 | register Lisp_Object tem; | |
5326 | int lose; | |
5500c422 | 5327 | Lisp_Object bolp; |
345d45b2 | 5328 | int startpos; |
101d1605 RS |
5329 | struct position posit; |
5330 | int original_vpos; | |
5331 | ||
d4e7cf01 GM |
5332 | /* If scrolling screen-fulls, compute the number of lines to |
5333 | scroll from the window's height. */ | |
5334 | if (whole) | |
5335 | n *= max (1, ht - next_screen_context_lines); | |
5336 | ||
101d1605 RS |
5337 | startpos = marker_position (w->start); |
5338 | ||
5339 | posit = *compute_motion (startpos, 0, 0, 0, | |
5340 | PT, ht, 0, | |
ec2b66c4 | 5341 | -1, XINT (w->hscroll), |
101d1605 RS |
5342 | 0, w); |
5343 | original_vpos = posit.vpos; | |
0a1f771a | 5344 | |
d834a2e9 | 5345 | XSETFASTINT (tem, PT); |
6ffdb539 | 5346 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 5347 | |
265a9e55 | 5348 | if (NILP (tem)) |
7ab12479 | 5349 | { |
cd2be1dd | 5350 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 5351 | startpos = PT; |
7ab12479 JB |
5352 | } |
5353 | ||
345d45b2 | 5354 | SET_PT (startpos); |
5ce7b543 | 5355 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 5356 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 5357 | pos = PT; |
b73ea88e | 5358 | pos_byte = PT_BYTE; |
7ab12479 | 5359 | bolp = Fbolp (); |
b73ea88e | 5360 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
5361 | |
5362 | if (lose) | |
f8026fd8 JB |
5363 | { |
5364 | if (noerror) | |
5365 | return; | |
5366 | else | |
ba96a5cf | 5367 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 5368 | } |
7ab12479 JB |
5369 | |
5370 | if (pos < ZV) | |
7ab12479 | 5371 | { |
0c7da84e RS |
5372 | int this_scroll_margin = scroll_margin; |
5373 | ||
5374 | /* Don't use a scroll margin that is negative or too large. */ | |
5375 | if (this_scroll_margin < 0) | |
5376 | this_scroll_margin = 0; | |
5377 | ||
949cf20f KS |
5378 | if (XINT (w->total_lines) < 4 * scroll_margin) |
5379 | this_scroll_margin = XINT (w->total_lines) / 4; | |
0c7da84e | 5380 | |
b73ea88e | 5381 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
5382 | w->start_at_line_beg = bolp; |
5383 | w->update_mode_line = Qt; | |
d834a2e9 | 5384 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 5385 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
5386 | /* Set force_start so that redisplay_window will run |
5387 | the window-scroll-functions. */ | |
5388 | w->force_start = Qt; | |
0c7da84e | 5389 | |
bdf4ec93 RS |
5390 | if (!NILP (Vscroll_preserve_screen_position) |
5391 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 5392 | { |
b73ea88e | 5393 | SET_PT_BOTH (pos, pos_byte); |
101d1605 | 5394 | Fvertical_motion (make_number (original_vpos), window); |
0c7da84e | 5395 | } |
101d1605 RS |
5396 | /* If we scrolled forward, put point enough lines down |
5397 | that it is outside the scroll margin. */ | |
5398 | else if (n > 0) | |
0c7da84e | 5399 | { |
101d1605 RS |
5400 | int top_margin; |
5401 | ||
5402 | if (this_scroll_margin > 0) | |
5403 | { | |
b73ea88e | 5404 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
5405 | Fvertical_motion (make_number (this_scroll_margin), window); |
5406 | top_margin = PT; | |
5407 | } | |
5408 | else | |
5409 | top_margin = pos; | |
5410 | ||
5411 | if (top_margin <= opoint) | |
b73ea88e | 5412 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 5413 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 5414 | { |
b73ea88e | 5415 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
5416 | Fvertical_motion (make_number (original_vpos), window); |
5417 | } | |
9317a85d | 5418 | else |
335406fc | 5419 | SET_PT (top_margin); |
0c7da84e | 5420 | } |
101d1605 | 5421 | else if (n < 0) |
7ab12479 | 5422 | { |
101d1605 RS |
5423 | int bottom_margin; |
5424 | ||
0c7da84e RS |
5425 | /* If we scrolled backward, put point near the end of the window |
5426 | but not within the scroll margin. */ | |
b73ea88e | 5427 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 5428 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
5429 | if (XFASTINT (tem) == ht - this_scroll_margin) |
5430 | bottom_margin = PT; | |
5431 | else | |
5432 | bottom_margin = PT + 1; | |
5433 | ||
5434 | if (bottom_margin > opoint) | |
b73ea88e | 5435 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 5436 | else |
101d1605 | 5437 | { |
5500c422 | 5438 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 5439 | { |
b73ea88e | 5440 | SET_PT_BOTH (pos, pos_byte); |
9317a85d RS |
5441 | Fvertical_motion (make_number (original_vpos), window); |
5442 | } | |
5443 | else | |
5444 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 5445 | } |
7ab12479 JB |
5446 | } |
5447 | } | |
5448 | else | |
f8026fd8 JB |
5449 | { |
5450 | if (noerror) | |
5451 | return; | |
5452 | else | |
ba96a5cf | 5453 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 5454 | } |
7ab12479 | 5455 | } |
5500c422 GM |
5456 | |
5457 | ||
5458 | /* Scroll selected_window up or down. If N is nil, scroll a | |
5459 | screen-full which is defined as the height of the window minus | |
5460 | next_screen_context_lines. If N is the symbol `-', scroll. | |
5461 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
5462 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
5463 | |
5464 | static void | |
5465 | scroll_command (n, direction) | |
5500c422 | 5466 | Lisp_Object n; |
7ab12479 JB |
5467 | int direction; |
5468 | { | |
331379bf | 5469 | int count = SPECPDL_INDEX (); |
7ab12479 | 5470 | |
5500c422 GM |
5471 | xassert (abs (direction) == 1); |
5472 | ||
5473 | /* If selected window's buffer isn't current, make it current for | |
5474 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 5475 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
5476 | { |
5477 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5478 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
5479 | |
5480 | /* Make redisplay consider other windows than just selected_window. */ | |
5481 | ++windows_or_buffers_changed; | |
95605e15 | 5482 | } |
7ab12479 | 5483 | |
265a9e55 | 5484 | if (NILP (n)) |
d4e7cf01 | 5485 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 5486 | else if (EQ (n, Qminus)) |
d4e7cf01 | 5487 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
5488 | else |
5489 | { | |
5490 | n = Fprefix_numeric_value (n); | |
101d1605 | 5491 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 5492 | } |
95605e15 JB |
5493 | |
5494 | unbind_to (count, Qnil); | |
7ab12479 JB |
5495 | } |
5496 | ||
5497 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
a0a37a6f LT |
5498 | doc: /* Scroll text of current window upward ARG lines. |
5499 | If ARG is omitted or nil, scroll upward by a near full screen. | |
fdb82f93 PJ |
5500 | A near full screen is `next-screen-context-lines' less than a full screen. |
5501 | Negative ARG means scroll downward. | |
5502 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5503 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5504 | (arg) | |
413430c5 | 5505 | Lisp_Object arg; |
7ab12479 | 5506 | { |
413430c5 | 5507 | scroll_command (arg, 1); |
7ab12479 JB |
5508 | return Qnil; |
5509 | } | |
5510 | ||
5511 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
a0a37a6f LT |
5512 | doc: /* Scroll text of current window down ARG lines. |
5513 | If ARG is omitted or nil, scroll down by a near full screen. | |
fdb82f93 PJ |
5514 | A near full screen is `next-screen-context-lines' less than a full screen. |
5515 | Negative ARG means scroll upward. | |
5516 | If ARG is the atom `-', scroll upward by nearly full screen. | |
5517 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5518 | (arg) | |
413430c5 | 5519 | Lisp_Object arg; |
7ab12479 | 5520 | { |
413430c5 | 5521 | scroll_command (arg, -1); |
7ab12479 JB |
5522 | return Qnil; |
5523 | } | |
ccd0664b RS |
5524 | \f |
5525 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 5526 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 5527 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
5528 | showing that buffer is used. |
5529 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5530 | specifies the window. This takes precedence over | |
5531 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5532 | () |
7ab12479 | 5533 | { |
ccd0664b | 5534 | Lisp_Object window; |
7ab12479 JB |
5535 | |
5536 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 5537 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
5538 | window = Vminibuf_scroll_window; |
5539 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 5540 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
5541 | { |
5542 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 5543 | if (NILP (window)) |
53f76081 | 5544 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
5545 | } |
5546 | else | |
dbc4e1c1 JB |
5547 | { |
5548 | /* Nothing specified; look for a neighboring window on the same | |
5549 | frame. */ | |
5550 | window = Fnext_window (selected_window, Qnil, Qnil); | |
5551 | ||
5552 | if (EQ (window, selected_window)) | |
5553 | /* That didn't get us anywhere; look for a window on another | |
5554 | visible frame. */ | |
5555 | do | |
5556 | window = Fnext_window (window, Qnil, Qt); | |
5557 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
5558 | && ! EQ (window, selected_window)); | |
5559 | } | |
5560 | ||
b7826503 | 5561 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
5562 | |
5563 | if (EQ (window, selected_window)) | |
5564 | error ("There is no other window"); | |
5565 | ||
ccd0664b RS |
5566 | return window; |
5567 | } | |
5568 | ||
5569 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
5570 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
5571 | A near full screen is `next-screen-context-lines' less than a full screen. | |
5572 | The next window is the one below the current one; or the one at the top | |
5573 | if the current one is at the bottom. Negative ARG means scroll downward. | |
5574 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5575 | When calling from a program, supply as argument a number, nil, or `-'. | |
5576 | ||
fdb82f93 | 5577 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5578 | showing that buffer, popping the buffer up if necessary. |
5579 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5580 | specifies the window to scroll. This takes precedence over | |
5581 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5582 | (arg) |
d4e7cf01 | 5583 | Lisp_Object arg; |
ccd0664b | 5584 | { |
d4e7cf01 GM |
5585 | Lisp_Object window; |
5586 | struct window *w; | |
331379bf | 5587 | int count = SPECPDL_INDEX (); |
ccd0664b RS |
5588 | |
5589 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5590 | w = XWINDOW (window); |
7ab12479 JB |
5591 | |
5592 | /* Don't screw up if window_scroll gets an error. */ | |
5593 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5594 | ++windows_or_buffers_changed; |
7ab12479 JB |
5595 | |
5596 | Fset_buffer (w->buffer); | |
5597 | SET_PT (marker_position (w->pointm)); | |
5598 | ||
413430c5 | 5599 | if (NILP (arg)) |
d4e7cf01 | 5600 | window_scroll (window, 1, 1, 1); |
413430c5 | 5601 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5602 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5603 | else |
5604 | { | |
413430c5 EN |
5605 | if (CONSP (arg)) |
5606 | arg = Fcar (arg); | |
b7826503 | 5607 | CHECK_NUMBER (arg); |
101d1605 | 5608 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5609 | } |
5610 | ||
b73ea88e | 5611 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5612 | unbind_to (count, Qnil); |
7ab12479 JB |
5613 | |
5614 | return Qnil; | |
5615 | } | |
5616 | \f | |
dc297565 | 5617 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "P\np", |
fdb82f93 | 5618 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5619 | Default for ARG is window width minus 2. |
5620 | Value is the total amount of leftward horizontal scrolling in | |
5621 | effect after the change. | |
dc297565 RS |
5622 | If SET_MINIMUM is non-nil, the new scroll amount becomes the |
5623 | lower bound for automatic scrolling, i.e. automatic scrolling | |
2fe41216 | 5624 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5625 | by this function. This happens in an interactive call. */) |
5626 | (arg, set_minimum) | |
5627 | register Lisp_Object arg, set_minimum; | |
7ab12479 | 5628 | { |
c67fa410 GM |
5629 | Lisp_Object result; |
5630 | int hscroll; | |
5631 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5632 | |
265a9e55 | 5633 | if (NILP (arg)) |
949cf20f | 5634 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5635 | else |
5636 | arg = Fprefix_numeric_value (arg); | |
5637 | ||
c67fa410 GM |
5638 | hscroll = XINT (w->hscroll) + XINT (arg); |
5639 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
5640 | ||
dc297565 | 5641 | if (!NILP (set_minimum)) |
c67fa410 GM |
5642 | w->min_hscroll = w->hscroll; |
5643 | ||
5644 | return result; | |
7ab12479 JB |
5645 | } |
5646 | ||
dc297565 | 5647 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "P\np", |
fdb82f93 | 5648 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5649 | Default for ARG is window width minus 2. |
5650 | Value is the total amount of leftward horizontal scrolling in | |
5651 | effect after the change. | |
dc297565 RS |
5652 | If SET_MINIMUM is non-nil, the new scroll amount becomes the |
5653 | lower bound for automatic scrolling, i.e. automatic scrolling | |
2fe41216 | 5654 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5655 | by this function. This happens in an interactive call. */) |
5656 | (arg, set_minimum) | |
a93563fd | 5657 | register Lisp_Object arg, set_minimum; |
7ab12479 | 5658 | { |
c67fa410 GM |
5659 | Lisp_Object result; |
5660 | int hscroll; | |
5661 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5662 | |
265a9e55 | 5663 | if (NILP (arg)) |
949cf20f | 5664 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5665 | else |
5666 | arg = Fprefix_numeric_value (arg); | |
5667 | ||
c67fa410 GM |
5668 | hscroll = XINT (w->hscroll) - XINT (arg); |
5669 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
177c0ea7 | 5670 | |
dc297565 | 5671 | if (!NILP (set_minimum)) |
c67fa410 GM |
5672 | w->min_hscroll = w->hscroll; |
5673 | ||
5674 | return result; | |
7ab12479 JB |
5675 | } |
5676 | ||
fa832261 KS |
5677 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5678 | doc: /* Return the window which was selected when entering the minibuffer. | |
5679 | Returns nil, if current window is not a minibuffer window. */) | |
5680 | () | |
5681 | { | |
5682 | if (minibuf_level > 0 | |
5683 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5684 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5685 | return minibuf_selected_window; | |
5686 | ||
5687 | return Qnil; | |
5688 | } | |
5689 | ||
12c8b416 GM |
5690 | /* Value is the number of lines actually displayed in window W, |
5691 | as opposed to its height. */ | |
5692 | ||
5693 | static int | |
5694 | displayed_window_lines (w) | |
5695 | struct window *w; | |
5696 | { | |
5697 | struct it it; | |
5698 | struct text_pos start; | |
5699 | int height = window_box_height (w); | |
5700 | struct buffer *old_buffer; | |
5701 | int bottom_y; | |
5702 | ||
5703 | if (XBUFFER (w->buffer) != current_buffer) | |
5704 | { | |
5705 | old_buffer = current_buffer; | |
5706 | set_buffer_internal (XBUFFER (w->buffer)); | |
5707 | } | |
5708 | else | |
5709 | old_buffer = NULL; | |
5710 | ||
521b203e GM |
5711 | /* In case W->start is out of the accessible range, do something |
5712 | reasonable. This happens in Info mode when Info-scroll-down | |
5713 | calls (recenter -1) while W->start is 1. */ | |
5714 | if (XMARKER (w->start)->charpos < BEGV) | |
5715 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
5716 | else if (XMARKER (w->start)->charpos > ZV) | |
5717 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
5718 | else | |
5719 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5720 | ||
12c8b416 GM |
5721 | start_display (&it, w, start); |
5722 | move_it_vertically (&it, height); | |
c8bc6f65 | 5723 | bottom_y = line_bottom_y (&it); |
12c8b416 | 5724 | |
1de65f51 RS |
5725 | /* rms: On a non-window display, |
5726 | the value of it.vpos at the bottom of the screen | |
5727 | seems to be 1 larger than window_box_height (w). | |
5728 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5729 | when ZV is on the last screen line | |
5730 | moves to the previous screen line instead of the last one. */ | |
5731 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) | |
5732 | height++; | |
5733 | ||
12c8b416 GM |
5734 | /* Add in empty lines at the bottom of the window. */ |
5735 | if (bottom_y < height) | |
5736 | { | |
949cf20f | 5737 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5738 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5739 | } |
5740 | ||
c8bc6f65 GM |
5741 | if (old_buffer) |
5742 | set_buffer_internal (old_buffer); | |
5743 | ||
12c8b416 GM |
5744 | return it.vpos; |
5745 | } | |
5746 | ||
5747 | ||
7ab12479 | 5748 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
fdb82f93 PJ |
5749 | doc: /* Center point in window and redisplay frame. |
5750 | With prefix argument ARG, recenter putting point on screen line ARG | |
5751 | relative to the current window. If ARG is negative, it counts up from the | |
5752 | bottom of the window. (ARG should be less than the height of the window.) | |
5753 | ||
7d1d98ee KS |
5754 | If ARG is omitted or nil, erase the entire frame and then redraw with point |
5755 | in the center of the current window. If `auto-resize-tool-bars' is set to | |
5756 | `grow-only', this resets the tool-bar's height to the minimum height needed. | |
5757 | ||
fdb82f93 PJ |
5758 | Just C-u as prefix means put point in the center of the window |
5759 | and redisplay normally--don't erase and redraw the frame. */) | |
5760 | (arg) | |
413430c5 | 5761 | register Lisp_Object arg; |
7ab12479 | 5762 | { |
6df47b59 | 5763 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
5764 | struct buffer *buf = XBUFFER (w->buffer); |
5765 | struct buffer *obuf = current_buffer; | |
6df47b59 GM |
5766 | int center_p = 0; |
5767 | int charpos, bytepos; | |
f6b43440 RS |
5768 | int iarg; |
5769 | int this_scroll_margin; | |
7ab12479 | 5770 | |
0fa5d25b RS |
5771 | /* If redisplay is suppressed due to an error, try again. */ |
5772 | obuf->display_error_modiff = 0; | |
5773 | ||
413430c5 | 5774 | if (NILP (arg)) |
7ab12479 | 5775 | { |
f02d6d5c KH |
5776 | int i; |
5777 | ||
5778 | /* Invalidate pixel data calculated for all compositions. */ | |
5779 | for (i = 0; i < n_compositions; i++) | |
5780 | composition_table[i]->font = NULL; | |
7ab12479 | 5781 | |
7d1d98ee KS |
5782 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5783 | ||
5784 | Fredraw_frame (WINDOW_FRAME (w)); | |
5785 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
6df47b59 | 5786 | center_p = 1; |
7ab12479 | 5787 | } |
413430c5 | 5788 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5789 | center_p = 1; |
7ab12479 JB |
5790 | else |
5791 | { | |
413430c5 | 5792 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5793 | CHECK_NUMBER (arg); |
ae12ecd7 | 5794 | iarg = XINT (arg); |
7ab12479 JB |
5795 | } |
5796 | ||
478292ed | 5797 | set_buffer_internal (buf); |
7ab12479 | 5798 | |
f6b43440 RS |
5799 | /* Do this after making BUF current |
5800 | in case scroll_margin is buffer-local. */ | |
5801 | this_scroll_margin = max (0, scroll_margin); | |
5802 | this_scroll_margin = min (this_scroll_margin, | |
5803 | XFASTINT (w->total_lines) / 4); | |
5804 | ||
521b203e | 5805 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5806 | have variable-height lines and centering point on the basis of |
5807 | line counts would lead to strange effects. */ | |
521b203e | 5808 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5809 | { |
6df47b59 GM |
5810 | if (center_p) |
5811 | { | |
521b203e GM |
5812 | struct it it; |
5813 | struct text_pos pt; | |
177c0ea7 | 5814 | |
521b203e GM |
5815 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5816 | start_display (&it, w, pt); | |
f204989e | 5817 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5818 | charpos = IT_CHARPOS (it); |
5819 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5820 | } |
f6b43440 | 5821 | else if (iarg < 0) |
6df47b59 | 5822 | { |
521b203e GM |
5823 | struct it it; |
5824 | struct text_pos pt; | |
f6b43440 | 5825 | int nlines = -iarg; |
f204989e KS |
5826 | int extra_line_spacing; |
5827 | int h = window_box_height (w); | |
177c0ea7 | 5828 | |
f6b43440 RS |
5829 | iarg = - max (-iarg, this_scroll_margin); |
5830 | ||
521b203e GM |
5831 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5832 | start_display (&it, w, pt); | |
f204989e KS |
5833 | |
5834 | /* Be sure we have the exact height of the full line containing PT. */ | |
5835 | move_it_by_lines (&it, 0, 1); | |
521b203e | 5836 | |
d466fa4d | 5837 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5838 | height minus what's displayed in the line containing PT, |
5839 | and the lines below. */ | |
f204989e KS |
5840 | it.current_y = 0; |
5841 | it.vpos = 0; | |
d466fa4d GM |
5842 | move_it_by_lines (&it, nlines, 1); |
5843 | ||
f204989e KS |
5844 | if (it.vpos == nlines) |
5845 | h -= it.current_y; | |
5846 | else | |
5847 | { | |
5848 | /* Last line has no newline */ | |
5849 | h -= line_bottom_y (&it); | |
5850 | it.vpos++; | |
5851 | } | |
5852 | ||
5853 | /* Don't reserve space for extra line spacing of last line. */ | |
5854 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5855 | |
5856 | /* If we can't move down NLINES lines because we hit | |
5857 | the end of the buffer, count in some empty lines. */ | |
5858 | if (it.vpos < nlines) | |
f204989e KS |
5859 | { |
5860 | nlines -= it.vpos; | |
5861 | extra_line_spacing = it.extra_line_spacing; | |
5862 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5863 | } | |
5864 | if (h <= 0) | |
5865 | return Qnil; | |
201c831a | 5866 | |
f204989e | 5867 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5868 | start_display (&it, w, pt); |
f204989e KS |
5869 | it.current_y = 0; |
5870 | move_it_vertically_backward (&it, h); | |
5871 | ||
5872 | /* If extra line spacing is present, we may move too far | |
5873 | back. This causes the last line to be only partially | |
5874 | visible (which triggers redisplay to recenter that line | |
5875 | in the middle), so move forward. | |
5876 | But ignore extra line spacing on last line, as it is not | |
5877 | considered to be part of the visible height of the line. | |
5878 | */ | |
5879 | h += extra_line_spacing; | |
5880 | while (-it.current_y > h) | |
5881 | move_it_by_lines (&it, 1, 1); | |
5882 | ||
521b203e GM |
5883 | charpos = IT_CHARPOS (it); |
5884 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5885 | } |
521b203e GM |
5886 | else |
5887 | { | |
5888 | struct position pos; | |
f6b43440 | 5889 | |
f6b43440 RS |
5890 | iarg = max (iarg, this_scroll_margin); |
5891 | ||
5892 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5893 | charpos = pos.bufpos; |
5894 | bytepos = pos.bytepos; | |
5895 | } | |
5896 | } | |
5897 | else | |
5898 | { | |
5899 | struct position pos; | |
5900 | int ht = window_internal_height (w); | |
5901 | ||
5902 | if (center_p) | |
a4429c5b | 5903 | iarg = ht / 2; |
f567c488 KS |
5904 | else if (iarg < 0) |
5905 | iarg += ht; | |
f6b43440 RS |
5906 | |
5907 | /* Don't let it get into the margin at either top or bottom. */ | |
5908 | iarg = max (iarg, this_scroll_margin); | |
5909 | iarg = min (iarg, ht - this_scroll_margin - 1); | |
177c0ea7 | 5910 | |
f6b43440 | 5911 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
5912 | charpos = pos.bufpos; |
5913 | bytepos = pos.bytepos; | |
5914 | } | |
5915 | ||
5916 | /* Set the new window start. */ | |
5917 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 5918 | w->window_end_valid = Qnil; |
177c0ea7 | 5919 | |
95605b1b RS |
5920 | w->optional_new_start = Qt; |
5921 | ||
6df47b59 GM |
5922 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
5923 | w->start_at_line_beg = Qt; | |
5924 | else | |
5925 | w->start_at_line_beg = Qnil; | |
177c0ea7 | 5926 | |
478292ed | 5927 | set_buffer_internal (obuf); |
7ab12479 JB |
5928 | return Qnil; |
5929 | } | |
b7617575 GM |
5930 | |
5931 | ||
81fe0836 | 5932 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5933 | 0, 1, 0, |
5934 | doc: /* Return the height in lines of the text display area of WINDOW. | |
c85322d0 | 5935 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
5936 | This doesn't include the mode-line (or header-line if any) or any |
5937 | partial-height lines in the text display area. */) | |
5938 | (window) | |
81fe0836 MB |
5939 | Lisp_Object window; |
5940 | { | |
5941 | struct window *w = decode_window (window); | |
5942 | int pixel_height = window_box_height (w); | |
949cf20f | 5943 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5944 | return make_number (line_height); |
5945 | } | |
5946 | ||
5947 | ||
7ab12479 JB |
5948 | \f |
5949 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5950 | 1, 1, "P", |
5951 | doc: /* Position point relative to window. | |
5952 | With no argument, position point at center of window. | |
5953 | An argument specifies vertical position within the window; | |
5954 | zero means top of window, negative means relative to bottom of window. */) | |
5955 | (arg) | |
b7617575 | 5956 | Lisp_Object arg; |
7ab12479 | 5957 | { |
b7617575 GM |
5958 | struct window *w = XWINDOW (selected_window); |
5959 | int lines, start; | |
540b6aa0 | 5960 | Lisp_Object window; |
f6b43440 RS |
5961 | #if 0 |
5962 | int this_scroll_margin; | |
5963 | #endif | |
7ab12479 | 5964 | |
b7617575 | 5965 | window = selected_window; |
7ab12479 JB |
5966 | start = marker_position (w->start); |
5967 | if (start < BEGV || start > ZV) | |
5968 | { | |
b7617575 | 5969 | int height = window_internal_height (w); |
cd2be1dd | 5970 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 5971 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
5972 | w->start_at_line_beg = Fbolp (); |
5973 | w->force_start = Qt; | |
5974 | } | |
5975 | else | |
b73ea88e | 5976 | Fgoto_char (w->start); |
7ab12479 | 5977 | |
b7617575 | 5978 | lines = displayed_window_lines (w); |
f6b43440 RS |
5979 | |
5980 | #if 0 | |
5981 | this_scroll_margin = max (0, scroll_margin); | |
5982 | this_scroll_margin = min (this_scroll_margin, lines / 4); | |
5983 | #endif | |
5984 | ||
b7617575 GM |
5985 | if (NILP (arg)) |
5986 | XSETFASTINT (arg, lines / 2); | |
5987 | else | |
5988 | { | |
f6b43440 RS |
5989 | int iarg = XINT (Fprefix_numeric_value (arg)); |
5990 | ||
5991 | if (iarg < 0) | |
5992 | iarg = iarg + lines; | |
5993 | ||
5994 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5995 | to a place inside the scroll margins (which would cause the | |
5996 | next redisplay to scroll). I wrote this code, but then concluded | |
5997 | it is probably better not to install it. However, it is here | |
5998 | inside #if 0 so as not to lose it. -- rms. */ | |
5999 | ||
6000 | /* Don't let it get into the margin at either top or bottom. */ | |
6001 | iarg = max (iarg, this_scroll_margin); | |
6002 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
6003 | #endif | |
6004 | ||
6005 | arg = make_number (iarg); | |
b7617575 GM |
6006 | } |
6007 | ||
c8bc6f65 | 6008 | /* Skip past a partially visible first line. */ |
163784df | 6009 | if (w->vscroll) |
163784df MB |
6010 | XSETINT (arg, XINT (arg) + 1); |
6011 | ||
540b6aa0 | 6012 | return Fvertical_motion (arg, window); |
7ab12479 | 6013 | } |
5500c422 GM |
6014 | |
6015 | ||
7ab12479 | 6016 | \f |
5500c422 GM |
6017 | /*********************************************************************** |
6018 | Window Configuration | |
6019 | ***********************************************************************/ | |
6020 | ||
7ab12479 JB |
6021 | struct save_window_data |
6022 | { | |
f5ccc0cc | 6023 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 | 6024 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
949cf20f | 6025 | Lisp_Object frame_cols, frame_lines, frame_menu_bar_lines; |
9ea173e8 | 6026 | Lisp_Object frame_tool_bar_lines; |
bdc727bf | 6027 | Lisp_Object selected_frame; |
7ab12479 JB |
6028 | Lisp_Object current_window; |
6029 | Lisp_Object current_buffer; | |
6030 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 6031 | Lisp_Object minibuf_selected_window; |
7ab12479 | 6032 | Lisp_Object root_window; |
bdc727bf | 6033 | Lisp_Object focus_frame; |
756b6edc RS |
6034 | /* Record the values of window-min-width and window-min-height |
6035 | so that window sizes remain consistent with them. */ | |
6036 | Lisp_Object min_width, min_height; | |
cbff28e8 RS |
6037 | /* A vector, each of whose elements is a struct saved_window |
6038 | for one window. */ | |
7ab12479 JB |
6039 | Lisp_Object saved_windows; |
6040 | }; | |
ff06df24 | 6041 | |
cbff28e8 | 6042 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 6043 | struct saved_window |
ea68264b GM |
6044 | { |
6045 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
6046 | EMACS_INT size_from_Lisp_Vector_struct; | |
6047 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
7ab12479 | 6048 | |
ea68264b GM |
6049 | Lisp_Object window; |
6050 | Lisp_Object buffer, start, pointm, mark; | |
949cf20f KS |
6051 | Lisp_Object left_col, top_line, total_cols, total_lines; |
6052 | Lisp_Object hscroll, min_hscroll; | |
ea68264b GM |
6053 | Lisp_Object parent, prev; |
6054 | Lisp_Object start_at_line_beg; | |
6055 | Lisp_Object display_table; | |
949cf20f KS |
6056 | Lisp_Object orig_top_line, orig_total_lines; |
6057 | Lisp_Object left_margin_cols, right_margin_cols; | |
6058 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
6059 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type; | |
6ad0381c | 6060 | Lisp_Object dedicated; |
ea68264b GM |
6061 | }; |
6062 | ||
7ab12479 JB |
6063 | #define SAVED_WINDOW_N(swv,n) \ |
6064 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
6065 | ||
6066 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 PJ |
6067 | doc: /* Return t if OBJECT is a window-configuration object. */) |
6068 | (object) | |
413430c5 | 6069 | Lisp_Object object; |
7ab12479 | 6070 | { |
6ad0381c | 6071 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
6072 | } |
6073 | ||
3f8ab7bd | 6074 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 PJ |
6075 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
6076 | (config) | |
3f8ab7bd RS |
6077 | Lisp_Object config; |
6078 | { | |
6079 | register struct save_window_data *data; | |
6080 | struct Lisp_Vector *saved_windows; | |
6081 | ||
663fbbba | 6082 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
6083 | |
6084 | data = (struct save_window_data *) XVECTOR (config); | |
6085 | saved_windows = XVECTOR (data->saved_windows); | |
6086 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
6087 | } | |
6088 | ||
d5b2799e | 6089 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
6090 | Sset_window_configuration, 1, 1, 0, |
6091 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
6092 | CONFIGURATION must be a value previously returned | |
6093 | by `current-window-configuration' (which see). | |
6094 | If CONFIGURATION was made from a frame that is now deleted, | |
6095 | only frame-independent values can be restored. In this case, | |
6096 | the return value is nil. Otherwise the value is t. */) | |
6097 | (configuration) | |
2f83aebe | 6098 | Lisp_Object configuration; |
7ab12479 | 6099 | { |
7ab12479 JB |
6100 | register struct save_window_data *data; |
6101 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 6102 | Lisp_Object new_current_buffer; |
fd482be5 | 6103 | Lisp_Object frame; |
44fa5b1e | 6104 | FRAME_PTR f; |
72695e47 | 6105 | int old_point = -1; |
7ab12479 | 6106 | |
663fbbba | 6107 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 6108 | |
2f83aebe | 6109 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
6110 | saved_windows = XVECTOR (data->saved_windows); |
6111 | ||
7ab12479 | 6112 | new_current_buffer = data->current_buffer; |
265a9e55 | 6113 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 6114 | new_current_buffer = Qnil; |
72695e47 | 6115 | else |
73cadfc1 DK |
6116 | { |
6117 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
6118 | /* The code further down "preserves point" by saving here PT in |
6119 | old_point and then setting it later back into PT. When the | |
6120 | current-selected-window and the final-selected-window both show | |
6121 | the current buffer, this suffers from the problem that the | |
6122 | current PT is the window-point of the current-selected-window, | |
6123 | while the final PT is the point of the final-selected-window, so | |
6124 | this copy from one PT to the other would end up moving the | |
6125 | window-point of the final-selected-window to the window-point of | |
6126 | the current-selected-window. So we have to be careful which | |
6127 | point of the current-buffer we copy into old_point. */ | |
6128 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
6129 | && WINDOWP (selected_window) | |
6130 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) | |
6131 | && !EQ (selected_window, data->current_window)) | |
6132 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
6133 | else | |
6134 | old_point = PT; | |
73cadfc1 | 6135 | else |
203eb0aa SM |
6136 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
6137 | point in new_current_buffer as of the last time this buffer was | |
6138 | used. This can be non-deterministic since it can be changed by | |
6139 | things like jit-lock by mere temporary selection of some random | |
6140 | window that happens to show this buffer. | |
6141 | So if possible we want this arbitrary choice of "which point" to | |
6142 | be the one from the to-be-selected-window so as to prevent this | |
6143 | window's cursor from being copied from another window. */ | |
6144 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
6145 | /* If current_window = selected_window, its point is in BUF_PT. */ | |
6146 | && !EQ (selected_window, data->current_window)) | |
6147 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
6148 | else | |
6149 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 6150 | } |
7ab12479 | 6151 | |
fd482be5 JB |
6152 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
6153 | f = XFRAME (frame); | |
177c0ea7 | 6154 | |
fd482be5 JB |
6155 | /* If f is a dead frame, don't bother rebuilding its window tree. |
6156 | However, there is other stuff we should still try to do below. */ | |
6157 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 6158 | { |
fd482be5 JB |
6159 | register struct window *w; |
6160 | register struct saved_window *p; | |
5500c422 GM |
6161 | struct window *root_window; |
6162 | struct window **leaf_windows; | |
6163 | int n_leaf_windows; | |
c4280705 | 6164 | int k, i, n; |
fd482be5 JB |
6165 | |
6166 | /* If the frame has been resized since this window configuration was | |
6167 | made, we change the frame to the size specified in the | |
6168 | configuration, restore the configuration, and then resize it | |
6169 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
6170 | int previous_frame_lines = FRAME_LINES (f); |
6171 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 6172 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 6173 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 6174 | |
d2b35234 RS |
6175 | /* The mouse highlighting code could get screwed up |
6176 | if it runs during this. */ | |
6177 | BLOCK_INPUT; | |
6178 | ||
949cf20f KS |
6179 | if (XFASTINT (data->frame_lines) != previous_frame_lines |
6180 | || XFASTINT (data->frame_cols) != previous_frame_cols) | |
6181 | change_frame_size (f, XFASTINT (data->frame_lines), | |
6182 | XFASTINT (data->frame_cols), 0, 0, 0); | |
e3678b64 | 6183 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
6184 | if (XFASTINT (data->frame_menu_bar_lines) |
6185 | != previous_frame_menu_bar_lines) | |
f8ad443a | 6186 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, make_number (0)); |
4314246f | 6187 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
6188 | if (XFASTINT (data->frame_tool_bar_lines) |
6189 | != previous_frame_tool_bar_lines) | |
6190 | x_set_tool_bar_lines (f, data->frame_tool_bar_lines, make_number (0)); | |
4314246f | 6191 | #endif |
217f2871 | 6192 | #endif |
fd482be5 | 6193 | |
a46c0153 RS |
6194 | /* "Swap out" point from the selected window's buffer |
6195 | into the window itself. (Normally the pointm of the selected | |
6196 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
6197 | restoring the window contents, and prevent it from |
6198 | being done later on when we select a new window. */ | |
596ae0cf RS |
6199 | if (! NILP (XWINDOW (selected_window)->buffer)) |
6200 | { | |
6201 | w = XWINDOW (selected_window); | |
6202 | set_marker_both (w->pointm, | |
6203 | w->buffer, | |
6204 | BUF_PT (XBUFFER (w->buffer)), | |
6205 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
6206 | } | |
6207 | ||
fd482be5 | 6208 | windows_or_buffers_changed++; |
29aeee73 | 6209 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 6210 | |
5500c422 | 6211 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 6212 | is a serious redisplay flickering problem. What we would |
5500c422 GM |
6213 | really like to do is to free only those matrices not reused |
6214 | below. */ | |
6215 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
6216 | leaf_windows | |
6217 | = (struct window **) alloca (count_windows (root_window) | |
6218 | * sizeof (struct window *)); | |
6219 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
6220 | ||
756b6edc RS |
6221 | /* Temporarily avoid any problems with windows that are smaller |
6222 | than they are supposed to be. */ | |
6223 | window_min_height = 1; | |
6224 | window_min_width = 1; | |
6225 | ||
fd482be5 JB |
6226 | /* Kludge Alert! |
6227 | Mark all windows now on frame as "deleted". | |
6228 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 6229 | |
fd482be5 JB |
6230 | Save their current buffers in their height fields, since we may |
6231 | need it later, if a buffer saved in the configuration is now | |
6232 | dead. */ | |
6233 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
6234 | ||
6235 | for (k = 0; k < saved_windows->size; k++) | |
6236 | { | |
6237 | p = SAVED_WINDOW_N (saved_windows, k); | |
6238 | w = XWINDOW (p->window); | |
6239 | w->next = Qnil; | |
7ab12479 | 6240 | |
fd482be5 JB |
6241 | if (!NILP (p->parent)) |
6242 | w->parent = SAVED_WINDOW_N (saved_windows, | |
6243 | XFASTINT (p->parent))->window; | |
6244 | else | |
6245 | w->parent = Qnil; | |
7ab12479 | 6246 | |
fd482be5 | 6247 | if (!NILP (p->prev)) |
7ab12479 | 6248 | { |
fd482be5 JB |
6249 | w->prev = SAVED_WINDOW_N (saved_windows, |
6250 | XFASTINT (p->prev))->window; | |
6251 | XWINDOW (w->prev)->next = p->window; | |
6252 | } | |
6253 | else | |
6254 | { | |
6255 | w->prev = Qnil; | |
6256 | if (!NILP (w->parent)) | |
6257 | { | |
949cf20f | 6258 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 JB |
6259 | { |
6260 | XWINDOW (w->parent)->vchild = p->window; | |
6261 | XWINDOW (w->parent)->hchild = Qnil; | |
6262 | } | |
6263 | else | |
6264 | { | |
6265 | XWINDOW (w->parent)->hchild = p->window; | |
6266 | XWINDOW (w->parent)->vchild = Qnil; | |
6267 | } | |
6268 | } | |
6269 | } | |
6270 | ||
6271 | /* If we squirreled away the buffer in the window's height, | |
6272 | restore it now. */ | |
949cf20f KS |
6273 | if (BUFFERP (w->total_lines)) |
6274 | w->buffer = w->total_lines; | |
6275 | w->left_col = p->left_col; | |
6276 | w->top_line = p->top_line; | |
6277 | w->total_cols = p->total_cols; | |
6278 | w->total_lines = p->total_lines; | |
fd482be5 | 6279 | w->hscroll = p->hscroll; |
ea68264b | 6280 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 6281 | w->display_table = p->display_table; |
949cf20f KS |
6282 | w->orig_top_line = p->orig_top_line; |
6283 | w->orig_total_lines = p->orig_total_lines; | |
6284 | w->left_margin_cols = p->left_margin_cols; | |
6285 | w->right_margin_cols = p->right_margin_cols; | |
6286 | w->left_fringe_width = p->left_fringe_width; | |
6287 | w->right_fringe_width = p->right_fringe_width; | |
6288 | w->fringes_outside_margins = p->fringes_outside_margins; | |
6289 | w->scroll_bar_width = p->scroll_bar_width; | |
6290 | w->vertical_scroll_bar_type = p->vertical_scroll_bar_type; | |
6ad0381c | 6291 | w->dedicated = p->dedicated; |
d834a2e9 | 6292 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 6293 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
6294 | |
6295 | /* Reinstall the saved buffer and pointers into it. */ | |
6296 | if (NILP (p->buffer)) | |
6297 | w->buffer = p->buffer; | |
6298 | else | |
6299 | { | |
6300 | if (!NILP (XBUFFER (p->buffer)->name)) | |
6301 | /* If saved buffer is alive, install it. */ | |
6302 | { | |
6303 | w->buffer = p->buffer; | |
6304 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
6305 | set_marker_restricted (w->start, p->start, w->buffer); |
6306 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 6307 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 6308 | p->mark, w->buffer); |
fd482be5 JB |
6309 | |
6310 | /* As documented in Fcurrent_window_configuration, don't | |
243a5ce6 RS |
6311 | restore the location of point in the buffer which was |
6312 | current when the window configuration was recorded. */ | |
6b54027b RS |
6313 | if (!EQ (p->buffer, new_current_buffer) |
6314 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
6315 | Fgoto_char (w->pointm); |
6316 | } | |
52a68e98 RS |
6317 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
6318 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 6319 | { |
fd482be5 JB |
6320 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
6321 | /* This will set the markers to beginning of visible | |
6322 | range. */ | |
6323 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
6324 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
6325 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
6326 | } |
6327 | else | |
fd482be5 | 6328 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 6329 | are real. */ |
7ab12479 | 6330 | { |
fd482be5 JB |
6331 | /* Set window markers at start of visible range. */ |
6332 | if (XMARKER (w->start)->buffer == 0) | |
6333 | set_marker_restricted (w->start, make_number (0), | |
6334 | w->buffer); | |
6335 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
6336 | set_marker_restricted_both (w->pointm, w->buffer, |
6337 | BUF_PT (XBUFFER (w->buffer)), | |
6338 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 6339 | w->start_at_line_beg = Qt; |
7ab12479 JB |
6340 | } |
6341 | } | |
6342 | } | |
9ace597f | 6343 | |
fd482be5 | 6344 | FRAME_ROOT_WINDOW (f) = data->root_window; |
719eaeb1 GM |
6345 | /* Prevent "swapping out point" in the old selected window |
6346 | using the buffer that has been restored into it. | |
a46c0153 | 6347 | We already swapped out point that from that window's old buffer. */ |
719eaeb1 | 6348 | selected_window = Qnil; |
a46c0153 RS |
6349 | |
6350 | /* Arrange *not* to restore point in the buffer that was | |
6351 | current when the window configuration was saved. */ | |
243a5ce6 RS |
6352 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
6353 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 6354 | make_number (old_point), |
243a5ce6 | 6355 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 6356 | |
14d87dc9 | 6357 | Fselect_window (data->current_window, Qnil); |
396a830c RS |
6358 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
6359 | = selected_window; | |
7ab12479 | 6360 | |
db269683 | 6361 | if (NILP (data->focus_frame) |
017b2bad | 6362 | || (FRAMEP (data->focus_frame) |
db269683 JB |
6363 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
6364 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 6365 | |
fd482be5 JB |
6366 | #if 0 /* I don't understand why this is needed, and it causes problems |
6367 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 6368 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 | 6369 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
d12f6f83 | 6370 | 0, 0); |
fd482be5 JB |
6371 | #endif |
6372 | ||
6373 | /* Set the screen height to the value it had before this function. */ | |
949cf20f KS |
6374 | if (previous_frame_lines != FRAME_LINES (f) |
6375 | || previous_frame_cols != FRAME_COLS (f)) | |
6376 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 6377 | 0, 0, 0); |
e3678b64 | 6378 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 6379 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
6380 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
6381 | make_number (0)); | |
4314246f | 6382 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
6383 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
6384 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
6385 | make_number (0)); | |
4314246f | 6386 | #endif |
217f2871 | 6387 | #endif |
d2b35234 | 6388 | |
5500c422 | 6389 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
6390 | for (i = n = 0; i < n_leaf_windows; ++i) |
6391 | { | |
6392 | if (NILP (leaf_windows[i]->buffer)) | |
6393 | { | |
6394 | /* Assert it's not reused as a combination. */ | |
177c0ea7 | 6395 | xassert (NILP (leaf_windows[i]->hchild) |
c4280705 GM |
6396 | && NILP (leaf_windows[i]->vchild)); |
6397 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
6398 | } |
6399 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
6400 | ++n; | |
6401 | } | |
177c0ea7 | 6402 | |
5500c422 GM |
6403 | adjust_glyphs (f); |
6404 | ||
d2b35234 | 6405 | UNBLOCK_INPUT; |
756b6edc | 6406 | |
478292ed RS |
6407 | /* Fselect_window will have made f the selected frame, so we |
6408 | reselect the proper frame here. Fhandle_switch_frame will change the | |
6409 | selected window too, but that doesn't make the call to | |
6410 | Fselect_window above totally superfluous; it still sets f's | |
6411 | selected window. */ | |
6412 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
d12f6f83 | 6413 | do_switch_frame (data->selected_frame, 0, 0); |
478292ed RS |
6414 | |
6415 | if (! NILP (Vwindow_configuration_change_hook) | |
6416 | && ! NILP (Vrun_hooks)) | |
6417 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
6418 | } | |
bdc727bf JB |
6419 | |
6420 | if (!NILP (new_current_buffer)) | |
243a5ce6 | 6421 | Fset_buffer (new_current_buffer); |
bdc727bf | 6422 | |
478292ed RS |
6423 | /* Restore the minimum heights recorded in the configuration. */ |
6424 | window_min_height = XINT (data->min_height); | |
6425 | window_min_width = XINT (data->min_width); | |
543f5fb1 | 6426 | |
478292ed | 6427 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 6428 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 6429 | |
3f8ab7bd | 6430 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
6431 | } |
6432 | ||
44fa5b1e | 6433 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
6434 | by setting their buffers to nil. */ |
6435 | ||
fd482be5 | 6436 | void |
7ab12479 JB |
6437 | delete_all_subwindows (w) |
6438 | register struct window *w; | |
6439 | { | |
265a9e55 | 6440 | if (!NILP (w->next)) |
7ab12479 | 6441 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 6442 | if (!NILP (w->vchild)) |
7ab12479 | 6443 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 6444 | if (!NILP (w->hchild)) |
7ab12479 | 6445 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af | 6446 | |
949cf20f | 6447 | w->total_lines = w->buffer; /* See Fset_window_configuration for excuse. */ |
605be8af | 6448 | |
86e48436 RS |
6449 | if (!NILP (w->buffer)) |
6450 | unshow_buffer (w); | |
6451 | ||
605be8af JB |
6452 | /* We set all three of these fields to nil, to make sure that we can |
6453 | distinguish this dead window from any live window. Live leaf | |
6454 | windows will have buffer set, and combination windows will have | |
6455 | vchild or hchild set. */ | |
6456 | w->buffer = Qnil; | |
6457 | w->vchild = Qnil; | |
6458 | w->hchild = Qnil; | |
acf70840 GM |
6459 | |
6460 | Vwindow_list = Qnil; | |
7ab12479 JB |
6461 | } |
6462 | \f | |
6463 | static int | |
6464 | count_windows (window) | |
6465 | register struct window *window; | |
6466 | { | |
6467 | register int count = 1; | |
265a9e55 | 6468 | if (!NILP (window->next)) |
7ab12479 | 6469 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 6470 | if (!NILP (window->vchild)) |
7ab12479 | 6471 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 6472 | if (!NILP (window->hchild)) |
7ab12479 JB |
6473 | count += count_windows (XWINDOW (window->hchild)); |
6474 | return count; | |
6475 | } | |
6476 | ||
5500c422 | 6477 | |
177c0ea7 | 6478 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 GM |
6479 | Value is last index + 1. */ |
6480 | ||
6481 | static int | |
6482 | get_leaf_windows (w, flat, i) | |
6483 | struct window *w; | |
6484 | struct window **flat; | |
6485 | int i; | |
6486 | { | |
6487 | while (w) | |
6488 | { | |
6489 | if (!NILP (w->hchild)) | |
6490 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
6491 | else if (!NILP (w->vchild)) | |
6492 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 6493 | else |
5500c422 GM |
6494 | flat[i++] = w; |
6495 | ||
6496 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6497 | } | |
6498 | ||
6499 | return i; | |
6500 | } | |
6501 | ||
6502 | ||
6503 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
6504 | null if W's current matrix is invalid, so that no meaningfull glyph | |
6505 | can be returned. */ | |
6506 | ||
6507 | struct glyph * | |
6508 | get_phys_cursor_glyph (w) | |
6509 | struct window *w; | |
6510 | { | |
6511 | struct glyph_row *row; | |
6512 | struct glyph *glyph; | |
6513 | ||
6514 | if (w->phys_cursor.vpos >= 0 | |
6515 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
6516 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
6517 | row->enabled_p) | |
6518 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
6519 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
6520 | else | |
6521 | glyph = NULL; | |
6522 | ||
6523 | return glyph; | |
6524 | } | |
6525 | ||
6526 | ||
7ab12479 JB |
6527 | static int |
6528 | save_window_save (window, vector, i) | |
6529 | Lisp_Object window; | |
6530 | struct Lisp_Vector *vector; | |
6531 | int i; | |
6532 | { | |
6533 | register struct saved_window *p; | |
6534 | register struct window *w; | |
6535 | register Lisp_Object tem; | |
6536 | ||
265a9e55 | 6537 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
6538 | { |
6539 | p = SAVED_WINDOW_N (vector, i); | |
6540 | w = XWINDOW (window); | |
6541 | ||
2a1893f4 | 6542 | XSETFASTINT (w->temslot, i); i++; |
7ab12479 JB |
6543 | p->window = window; |
6544 | p->buffer = w->buffer; | |
949cf20f KS |
6545 | p->left_col = w->left_col; |
6546 | p->top_line = w->top_line; | |
6547 | p->total_cols = w->total_cols; | |
6548 | p->total_lines = w->total_lines; | |
7ab12479 | 6549 | p->hscroll = w->hscroll; |
ea68264b | 6550 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 6551 | p->display_table = w->display_table; |
949cf20f KS |
6552 | p->orig_top_line = w->orig_top_line; |
6553 | p->orig_total_lines = w->orig_total_lines; | |
6554 | p->left_margin_cols = w->left_margin_cols; | |
6555 | p->right_margin_cols = w->right_margin_cols; | |
6556 | p->left_fringe_width = w->left_fringe_width; | |
6557 | p->right_fringe_width = w->right_fringe_width; | |
6558 | p->fringes_outside_margins = w->fringes_outside_margins; | |
6559 | p->scroll_bar_width = w->scroll_bar_width; | |
6560 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6ad0381c | 6561 | p->dedicated = w->dedicated; |
265a9e55 | 6562 | if (!NILP (w->buffer)) |
7ab12479 JB |
6563 | { |
6564 | /* Save w's value of point in the window configuration. | |
6565 | If w is the selected window, then get the value of point | |
6566 | from the buffer; pointm is garbage in the selected window. */ | |
6567 | if (EQ (window, selected_window)) | |
6568 | { | |
6569 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
6570 | set_marker_both (p->pointm, w->buffer, |
6571 | BUF_PT (XBUFFER (w->buffer)), | |
6572 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
6573 | } |
6574 | else | |
eeb82665 | 6575 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 6576 | |
eeb82665 | 6577 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
6578 | p->start_at_line_beg = w->start_at_line_beg; |
6579 | ||
6580 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 6581 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6582 | } |
6583 | else | |
6584 | { | |
6585 | p->pointm = Qnil; | |
6586 | p->start = Qnil; | |
6587 | p->mark = Qnil; | |
6588 | p->start_at_line_beg = Qnil; | |
6589 | } | |
6590 | ||
265a9e55 | 6591 | if (NILP (w->parent)) |
7ab12479 JB |
6592 | p->parent = Qnil; |
6593 | else | |
6594 | p->parent = XWINDOW (w->parent)->temslot; | |
6595 | ||
265a9e55 | 6596 | if (NILP (w->prev)) |
7ab12479 JB |
6597 | p->prev = Qnil; |
6598 | else | |
6599 | p->prev = XWINDOW (w->prev)->temslot; | |
6600 | ||
265a9e55 | 6601 | if (!NILP (w->vchild)) |
7ab12479 | 6602 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 6603 | if (!NILP (w->hchild)) |
7ab12479 JB |
6604 | i = save_window_save (w->hchild, vector, i); |
6605 | } | |
6606 | ||
6607 | return i; | |
6608 | } | |
6609 | ||
a0d76c27 | 6610 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6611 | Scurrent_window_configuration, 0, 1, 0, |
6612 | doc: /* Return an object representing the current window configuration of FRAME. | |
6613 | If FRAME is nil or omitted, use the selected frame. | |
6614 | This describes the number of windows, their sizes and current buffers, | |
6615 | and for each displayed buffer, where display starts, and the positions of | |
6616 | point and mark. An exception is made for point in the current buffer: | |
6617 | its value is -not- saved. | |
6618 | This also records the currently selected frame, and FRAME's focus | |
6619 | redirection (see `redirect-frame-focus'). */) | |
6620 | (frame) | |
44fa5b1e | 6621 | Lisp_Object frame; |
7ab12479 JB |
6622 | { |
6623 | register Lisp_Object tem; | |
6624 | register int n_windows; | |
6625 | register struct save_window_data *data; | |
da2792e0 | 6626 | register struct Lisp_Vector *vec; |
7ab12479 | 6627 | register int i; |
44fa5b1e | 6628 | FRAME_PTR f; |
43bad991 | 6629 | |
44fa5b1e | 6630 | if (NILP (frame)) |
1ae1a37d | 6631 | frame = selected_frame; |
b7826503 | 6632 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 6633 | f = XFRAME (frame); |
7ab12479 | 6634 | |
44fa5b1e | 6635 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
26605be9 | 6636 | vec = allocate_other_vector (VECSIZE (struct save_window_data)); |
da2792e0 KH |
6637 | data = (struct save_window_data *)vec; |
6638 | ||
949cf20f KS |
6639 | XSETFASTINT (data->frame_cols, FRAME_COLS (f)); |
6640 | XSETFASTINT (data->frame_lines, FRAME_LINES (f)); | |
d834a2e9 | 6641 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); |
9ea173e8 | 6642 | XSETFASTINT (data->frame_tool_bar_lines, FRAME_TOOL_BAR_LINES (f)); |
1ae1a37d | 6643 | data->selected_frame = selected_frame; |
44fa5b1e | 6644 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6645 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6646 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6647 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6648 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6649 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
6650 | XSETINT (data->min_height, window_min_height); |
6651 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
6652 | tem = Fmake_vector (make_number (n_windows), Qnil); |
6653 | data->saved_windows = tem; | |
6654 | for (i = 0; i < n_windows; i++) | |
6655 | XVECTOR (tem)->contents[i] | |
8a450f0a | 6656 | = Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil); |
a1d58e5b | 6657 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6658 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6659 | return (tem); |
6660 | } | |
6661 | ||
6662 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
fdb82f93 | 6663 | 0, UNEVALLED, 0, |
a0a37a6f LT |
6664 | doc: /* Execute BODY, preserving window sizes and contents. |
6665 | Return the value of the last form in BODY. | |
fdb82f93 PJ |
6666 | Restore which buffer appears in which window, where display starts, |
6667 | and the value of point and mark for each window. | |
6668 | Also restore the choice of selected window. | |
6669 | Also restore which buffer is current. | |
6924dda6 | 6670 | Does not restore the value of point in current buffer. |
1faa97e4 | 6671 | usage: (save-window-excursion BODY...) */) |
fdb82f93 | 6672 | (args) |
7ab12479 JB |
6673 | Lisp_Object args; |
6674 | { | |
6675 | register Lisp_Object val; | |
aed13378 | 6676 | register int count = SPECPDL_INDEX (); |
7ab12479 JB |
6677 | |
6678 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 6679 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
6680 | val = Fprogn (args); |
6681 | return unbind_to (count, val); | |
6682 | } | |
5500c422 | 6683 | |
94e16dd5 KS |
6684 | |
6685 | \f | |
6686 | /*********************************************************************** | |
6687 | Window Split Tree | |
6688 | ***********************************************************************/ | |
6689 | ||
6690 | static Lisp_Object | |
c16e1cc3 | 6691 | window_tree (w) |
94e16dd5 KS |
6692 | struct window *w; |
6693 | { | |
6694 | Lisp_Object tail = Qnil; | |
6695 | Lisp_Object result = Qnil; | |
6696 | ||
6697 | while (w) | |
6698 | { | |
6699 | Lisp_Object wn; | |
6700 | ||
6701 | XSETWINDOW (wn, w); | |
6702 | if (!NILP (w->hchild)) | |
6703 | wn = Fcons (Qnil, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6704 | window_tree (XWINDOW (w->hchild)))); |
94e16dd5 KS |
6705 | else if (!NILP (w->vchild)) |
6706 | wn = Fcons (Qt, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6707 | window_tree (XWINDOW (w->vchild)))); |
94e16dd5 KS |
6708 | |
6709 | if (NILP (result)) | |
6710 | { | |
6711 | result = tail = Fcons (wn, Qnil); | |
6712 | } | |
6713 | else | |
6714 | { | |
6715 | XSETCDR (tail, Fcons (wn, Qnil)); | |
6716 | tail = XCDR (tail); | |
6717 | } | |
6718 | ||
6719 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6720 | } | |
6721 | ||
6722 | return result; | |
6723 | } | |
6724 | ||
6725 | ||
6726 | ||
c16e1cc3 | 6727 | DEFUN ("window-tree", Fwindow_tree, Swindow_tree, |
94e16dd5 | 6728 | 0, 1, 0, |
c16e1cc3 | 6729 | doc: /* Return the window tree for frame FRAME. |
94e16dd5 KS |
6730 | |
6731 | The return value is a list of the form (ROOT MINI), where ROOT | |
c16e1cc3 | 6732 | represents the window tree of the frame's root window, and MINI |
94e16dd5 KS |
6733 | is the frame's minibuffer window. |
6734 | ||
6735 | If the root window is not split, ROOT is the root window itself. | |
6736 | Otherwise, ROOT is a list (DIR EDGES W1 W2 ...) where DIR is nil for a | |
008171a4 | 6737 | horizontal split, and t for a vertical split, EDGES gives the combined |
94e16dd5 KS |
6738 | size and position of the subwindows in the split, and the rest of the |
6739 | elements are the subwindows in the split. Each of the subwindows may | |
6740 | again be a window or a list representing a window split, and so on. | |
6741 | EDGES is a list \(LEFT TOP RIGHT BOTTOM) as returned by `window-edges'. | |
6742 | ||
6743 | If FRAME is nil or omitted, return information on the currently | |
6744 | selected frame. */) | |
6745 | (frame) | |
6746 | Lisp_Object frame; | |
6747 | { | |
94e16dd5 KS |
6748 | FRAME_PTR f; |
6749 | ||
6750 | if (NILP (frame)) | |
6751 | frame = selected_frame; | |
6752 | ||
6753 | CHECK_FRAME (frame); | |
6754 | f = XFRAME (frame); | |
6755 | ||
6756 | if (!FRAME_LIVE_P (f)) | |
6757 | return Qnil; | |
6758 | ||
c16e1cc3 | 6759 | return window_tree (XWINDOW (FRAME_ROOT_WINDOW (f))); |
94e16dd5 KS |
6760 | } |
6761 | ||
5500c422 GM |
6762 | \f |
6763 | /*********************************************************************** | |
6764 | Marginal Areas | |
6765 | ***********************************************************************/ | |
6766 | ||
6767 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6768 | 2, 3, 0, |
fdb82f93 | 6769 | doc: /* Set width of marginal areas of window WINDOW. |
e661376d KS |
6770 | If WINDOW is nil, set margins of the currently selected window. |
6771 | Second arg LEFT-WIDTH specifies the number of character cells to | |
6772 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6773 | does the same for the right marginal area. A nil width parameter | |
6774 | means no margin. */) | |
c10ce82e JB |
6775 | (window, left_width, right_width) |
6776 | Lisp_Object window, left_width, right_width; | |
5500c422 GM |
6777 | { |
6778 | struct window *w = decode_window (window); | |
5500c422 | 6779 | |
c2c3f202 KS |
6780 | /* Translate negative or zero widths to nil. |
6781 | Margins that are too wide have to be checked elsewhere. */ | |
6782 | ||
c10ce82e | 6783 | if (!NILP (left_width)) |
c2c3f202 | 6784 | { |
c10ce82e JB |
6785 | CHECK_NUMBER (left_width); |
6786 | if (XINT (left_width) <= 0) | |
6787 | left_width = Qnil; | |
c2c3f202 | 6788 | } |
5500c422 | 6789 | |
c10ce82e | 6790 | if (!NILP (right_width)) |
c2c3f202 | 6791 | { |
c10ce82e JB |
6792 | CHECK_NUMBER (right_width); |
6793 | if (XINT (right_width) <= 0) | |
6794 | right_width = Qnil; | |
c2c3f202 | 6795 | } |
5500c422 | 6796 | |
c10ce82e JB |
6797 | if (!EQ (w->left_margin_cols, left_width) |
6798 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6799 | { |
c10ce82e JB |
6800 | w->left_margin_cols = left_width; |
6801 | w->right_margin_cols = right_width; | |
949cf20f KS |
6802 | |
6803 | adjust_window_margins (w); | |
6804 | ||
6805 | ++windows_or_buffers_changed; | |
6806 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6807 | } | |
5500c422 | 6808 | |
5500c422 GM |
6809 | return Qnil; |
6810 | } | |
6811 | ||
6812 | ||
6813 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6814 | 0, 1, 0, | |
fdb82f93 PJ |
6815 | doc: /* Get width of marginal areas of window WINDOW. |
6816 | If WINDOW is omitted or nil, use the currently selected window. | |
6817 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
6818 | If a marginal area does not exist, its width will be returned | |
6819 | as nil. */) | |
6820 | (window) | |
5500c422 GM |
6821 | Lisp_Object window; |
6822 | { | |
6823 | struct window *w = decode_window (window); | |
949cf20f KS |
6824 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
6825 | } | |
6826 | ||
6827 | ||
6828 | \f | |
6829 | /*********************************************************************** | |
6830 | Fringes | |
6831 | ***********************************************************************/ | |
6832 | ||
6833 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, | |
6834 | 2, 4, 0, | |
62c2f759 | 6835 | doc: /* Set the fringe widths of window WINDOW. |
62c2f759 LK |
6836 | If WINDOW is nil, set the fringe widths of the currently selected |
6837 | window. | |
e661376d KS |
6838 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for |
6839 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6840 | fringe width. If a fringe width arg is nil, that means to use the | |
6841 | frame's default fringe width. Default fringe widths can be set with | |
6842 | the command `set-fringe-style'. | |
6843 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
62c2f759 LK |
6844 | outside of the display margins. By default, fringes are drawn between |
6845 | display marginal areas and the text area. */) | |
c10ce82e JB |
6846 | (window, left_width, right_width, outside_margins) |
6847 | Lisp_Object window, left_width, right_width, outside_margins; | |
949cf20f KS |
6848 | { |
6849 | struct window *w = decode_window (window); | |
6850 | ||
c10ce82e JB |
6851 | if (!NILP (left_width)) |
6852 | CHECK_NATNUM (left_width); | |
6853 | if (!NILP (right_width)) | |
6854 | CHECK_NATNUM (right_width); | |
5a857365 | 6855 | |
017e297e | 6856 | /* Do nothing on a tty. */ |
d46c6df5 NR |
6857 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
6858 | && (!EQ (w->left_fringe_width, left_width) | |
6859 | || !EQ (w->right_fringe_width, right_width) | |
6860 | || !EQ (w->fringes_outside_margins, outside_margins))) | |
949cf20f | 6861 | { |
c10ce82e JB |
6862 | w->left_fringe_width = left_width; |
6863 | w->right_fringe_width = right_width; | |
949cf20f KS |
6864 | w->fringes_outside_margins = outside_margins; |
6865 | ||
6866 | adjust_window_margins (w); | |
6867 | ||
6868 | clear_glyph_matrix (w->current_matrix); | |
6869 | w->window_end_valid = Qnil; | |
6870 | ||
6871 | ++windows_or_buffers_changed; | |
6872 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6873 | } | |
6874 | ||
6875 | return Qnil; | |
6876 | } | |
6877 | ||
6878 | ||
6879 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6880 | 0, 1, 0, | |
6881 | doc: /* Get width of fringes of window WINDOW. | |
6882 | If WINDOW is omitted or nil, use the currently selected window. | |
467e281a | 6883 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
949cf20f KS |
6884 | (window) |
6885 | Lisp_Object window; | |
6886 | { | |
6887 | struct window *w = decode_window (window); | |
d46c6df5 | 6888 | |
949cf20f KS |
6889 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6890 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
d46c6df5 NR |
6891 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
6892 | ? Qt : Qnil), Qnil))); | |
949cf20f KS |
6893 | } |
6894 | ||
6895 | ||
6896 | \f | |
6897 | /*********************************************************************** | |
6898 | Scroll bars | |
6899 | ***********************************************************************/ | |
6900 | ||
6901 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, Sset_window_scroll_bars, | |
6902 | 2, 4, 0, | |
6903 | doc: /* Set width and type of scroll bars of window WINDOW. | |
6904 | If window is nil, set scroll bars of the currently selected window. | |
6905 | Second parameter WIDTH specifies the pixel width for the scroll bar; | |
6906 | this is automatically adjusted to a multiple of the frame column width. | |
6907 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6908 | bar: left, right, or nil. | |
2f71b5ea | 6909 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6910 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6911 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
79fd290e JB |
6912 | (window, width, vertical_type, horizontal_type) |
6913 | Lisp_Object window, width, vertical_type, horizontal_type; | |
949cf20f KS |
6914 | { |
6915 | struct window *w = decode_window (window); | |
6916 | ||
6917 | if (!NILP (width)) | |
0f8fe9a2 SM |
6918 | { |
6919 | CHECK_NATNUM (width); | |
949cf20f | 6920 | |
0f8fe9a2 SM |
6921 | if (XINT (width) == 0) |
6922 | vertical_type = Qnil; | |
6923 | } | |
949cf20f | 6924 | |
35ea56c9 | 6925 | if (!(NILP (vertical_type) |
0cc1039f | 6926 | || EQ (vertical_type, Qleft) |
2f71b5ea MY |
6927 | || EQ (vertical_type, Qright) |
6928 | || EQ (vertical_type, Qt))) | |
6929 | error ("Invalid type of vertical scroll bar"); | |
6930 | ||
949cf20f KS |
6931 | if (!EQ (w->scroll_bar_width, width) |
6932 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
6933 | { | |
6934 | w->scroll_bar_width = width; | |
6935 | w->vertical_scroll_bar_type = vertical_type; | |
6936 | ||
6937 | adjust_window_margins (w); | |
6938 | ||
6939 | clear_glyph_matrix (w->current_matrix); | |
6940 | w->window_end_valid = Qnil; | |
6941 | ||
6942 | ++windows_or_buffers_changed; | |
6943 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6944 | } | |
6945 | ||
6946 | return Qnil; | |
6947 | } | |
6948 | ||
6949 | ||
6950 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6951 | 0, 1, 0, | |
6952 | doc: /* Get width and type of scroll bars of window WINDOW. | |
6953 | If WINDOW is omitted or nil, use the currently selected window. | |
12853c58 KS |
6954 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6955 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6956 | value. */) | |
949cf20f KS |
6957 | (window) |
6958 | Lisp_Object window; | |
6959 | { | |
6960 | struct window *w = decode_window (window); | |
6961 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6962 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6963 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
6964 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
6965 | Fcons (w->vertical_scroll_bar_type, | |
6966 | Fcons (Qnil, Qnil)))); | |
5500c422 GM |
6967 | } |
6968 | ||
6969 | ||
7ab12479 | 6970 | \f |
5500c422 GM |
6971 | /*********************************************************************** |
6972 | Smooth scrolling | |
6973 | ***********************************************************************/ | |
6974 | ||
0cc1039f | 6975 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 PJ |
6976 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
6977 | Use the selected window if WINDOW is nil or omitted. | |
0cc1039f | 6978 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6979 | optional second arg PIXELS-P means value is measured in pixels. */) |
0cc1039f KS |
6980 | (window, pixels_p) |
6981 | Lisp_Object window, pixels_p; | |
5500c422 | 6982 | { |
47004952 | 6983 | Lisp_Object result; |
5500c422 GM |
6984 | struct frame *f; |
6985 | struct window *w; | |
177c0ea7 | 6986 | |
5500c422 GM |
6987 | if (NILP (window)) |
6988 | window = selected_window; | |
47004952 | 6989 | else |
b7826503 | 6990 | CHECK_WINDOW (window); |
5500c422 GM |
6991 | w = XWINDOW (window); |
6992 | f = XFRAME (w->frame); | |
177c0ea7 | 6993 | |
5500c422 | 6994 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6995 | result = (NILP (pixels_p) |
6996 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6997 | : make_number (-w->vscroll)); | |
5500c422 | 6998 | else |
47004952 GM |
6999 | result = make_number (0); |
7000 | return result; | |
5500c422 GM |
7001 | } |
7002 | ||
7003 | ||
7004 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 7005 | 2, 3, 0, |
fdb82f93 | 7006 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
7007 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
7008 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 7009 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
7010 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
7011 | corresponds to an integral number of pixels. The return value is the | |
7012 | result of this rounding. | |
7013 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
0cc1039f KS |
7014 | (window, vscroll, pixels_p) |
7015 | Lisp_Object window, vscroll, pixels_p; | |
5500c422 GM |
7016 | { |
7017 | struct window *w; | |
7018 | struct frame *f; | |
177c0ea7 | 7019 | |
5500c422 GM |
7020 | if (NILP (window)) |
7021 | window = selected_window; | |
47004952 | 7022 | else |
b7826503 PJ |
7023 | CHECK_WINDOW (window); |
7024 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 7025 | |
5500c422 GM |
7026 | w = XWINDOW (window); |
7027 | f = XFRAME (w->frame); | |
7028 | ||
7029 | if (FRAME_WINDOW_P (f)) | |
7030 | { | |
7031 | int old_dy = w->vscroll; | |
177c0ea7 | 7032 | |
0cc1039f KS |
7033 | w->vscroll = - (NILP (pixels_p) |
7034 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
7035 | : XFLOATINT (vscroll)); | |
47004952 | 7036 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 7037 | |
e56263e5 KS |
7038 | if (w->vscroll != old_dy) |
7039 | { | |
7040 | /* Adjust glyph matrix of the frame if the virtual display | |
7041 | area becomes larger than before. */ | |
7042 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
7043 | adjust_glyphs (f); | |
177c0ea7 | 7044 | |
e56263e5 KS |
7045 | /* Prevent redisplay shortcuts. */ |
7046 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
7047 | } | |
5500c422 | 7048 | } |
177c0ea7 | 7049 | |
0cc1039f | 7050 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 7051 | } |
177c0ea7 | 7052 | |
7bbb5782 GM |
7053 | \f |
7054 | /* Call FN for all leaf windows on frame F. FN is called with the | |
7055 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 7056 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 GM |
7057 | |
7058 | void | |
f95464e4 | 7059 | foreach_window (f, fn, user_data) |
7bbb5782 | 7060 | struct frame *f; |
f95464e4 GM |
7061 | int (* fn) P_ ((struct window *, void *)); |
7062 | void *user_data; | |
7bbb5782 | 7063 | { |
76fb556f YM |
7064 | /* Fdelete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
7065 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) | |
7066 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
7067 | } |
7068 | ||
7069 | ||
7070 | /* Helper function for foreach_window. Call FN for all leaf windows | |
7071 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 7072 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 7073 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 7074 | |
67492200 | 7075 | static int |
f95464e4 | 7076 | foreach_window_1 (w, fn, user_data) |
7bbb5782 | 7077 | struct window *w; |
f95464e4 GM |
7078 | int (* fn) P_ ((struct window *, void *)); |
7079 | void *user_data; | |
7bbb5782 | 7080 | { |
67492200 | 7081 | int cont; |
177c0ea7 | 7082 | |
67492200 | 7083 | for (cont = 1; w && cont;) |
7bbb5782 GM |
7084 | { |
7085 | if (!NILP (w->hchild)) | |
f95464e4 | 7086 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 7087 | else if (!NILP (w->vchild)) |
f95464e4 | 7088 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
177c0ea7 | 7089 | else |
0f532a9a | 7090 | cont = fn (w, user_data); |
177c0ea7 | 7091 | |
7bbb5782 GM |
7092 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
7093 | } | |
67492200 GM |
7094 | |
7095 | return cont; | |
7bbb5782 GM |
7096 | } |
7097 | ||
7098 | ||
6d194a45 | 7099 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 7100 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
7101 | the window start. */ |
7102 | ||
67492200 | 7103 | static int |
7bbb5782 GM |
7104 | freeze_window_start (w, freeze_p) |
7105 | struct window *w; | |
f95464e4 | 7106 | void *freeze_p; |
7bbb5782 GM |
7107 | { |
7108 | if (w == XWINDOW (selected_window) | |
7109 | || MINI_WINDOW_P (w) | |
7110 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
24d744ac | 7111 | && ! NILP (Vminibuf_scroll_window) |
7bbb5782 | 7112 | && w == XWINDOW (Vminibuf_scroll_window))) |
f95464e4 | 7113 | freeze_p = NULL; |
177c0ea7 | 7114 | |
f95464e4 | 7115 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 7116 | return 1; |
7bbb5782 GM |
7117 | } |
7118 | ||
7119 | ||
7120 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
7121 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
7122 | means freeze the window start. */ | |
7123 | ||
7124 | void | |
7125 | freeze_window_starts (f, freeze_p) | |
7126 | struct frame *f; | |
7127 | int freeze_p; | |
7128 | { | |
cbccabec | 7129 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 7130 | } |
5500c422 GM |
7131 | |
7132 | \f | |
7133 | /*********************************************************************** | |
7134 | Initialization | |
7135 | ***********************************************************************/ | |
7136 | ||
cbff28e8 RS |
7137 | /* Return 1 if window configurations C1 and C2 |
7138 | describe the same state of affairs. This is used by Fequal. */ | |
7139 | ||
7140 | int | |
2f8274be | 7141 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 7142 | Lisp_Object c1, c2; |
2f8274be | 7143 | int ignore_positions; |
cbff28e8 RS |
7144 | { |
7145 | register struct save_window_data *d1, *d2; | |
7146 | struct Lisp_Vector *sw1, *sw2; | |
7147 | int i; | |
7148 | ||
663fbbba KS |
7149 | CHECK_WINDOW_CONFIGURATION (c1); |
7150 | CHECK_WINDOW_CONFIGURATION (c2); | |
177c0ea7 | 7151 | |
cbff28e8 RS |
7152 | d1 = (struct save_window_data *) XVECTOR (c1); |
7153 | d2 = (struct save_window_data *) XVECTOR (c2); | |
7154 | sw1 = XVECTOR (d1->saved_windows); | |
7155 | sw2 = XVECTOR (d2->saved_windows); | |
7156 | ||
949cf20f | 7157 | if (! EQ (d1->frame_cols, d2->frame_cols)) |
cbff28e8 | 7158 | return 0; |
949cf20f | 7159 | if (! EQ (d1->frame_lines, d2->frame_lines)) |
cbff28e8 RS |
7160 | return 0; |
7161 | if (! EQ (d1->frame_menu_bar_lines, d2->frame_menu_bar_lines)) | |
7162 | return 0; | |
7163 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
7164 | return 0; | |
7165 | /* Don't compare the current_window field directly. | |
7166 | Instead see w1_is_current and w2_is_current, below. */ | |
7167 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
7168 | return 0; | |
2f8274be | 7169 | if (! ignore_positions) |
3f49fddc KS |
7170 | { |
7171 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
7172 | return 0; | |
7173 | if (! EQ (d1->minibuf_selected_window, d2->minibuf_selected_window)) | |
7174 | return 0; | |
7175 | } | |
cbff28e8 RS |
7176 | /* Don't compare the root_window field. |
7177 | We don't require the two configurations | |
7178 | to use the same window object, | |
7179 | and the two root windows must be equivalent | |
7180 | if everything else compares equal. */ | |
7181 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
7182 | return 0; | |
7183 | if (! EQ (d1->min_width, d2->min_width)) | |
7184 | return 0; | |
7185 | if (! EQ (d1->min_height, d2->min_height)) | |
7186 | return 0; | |
7187 | ||
7188 | /* Verify that the two confis have the same number of windows. */ | |
7189 | if (sw1->size != sw2->size) | |
7190 | return 0; | |
7191 | ||
7192 | for (i = 0; i < sw1->size; i++) | |
7193 | { | |
7194 | struct saved_window *p1, *p2; | |
7195 | int w1_is_current, w2_is_current; | |
7196 | ||
7197 | p1 = SAVED_WINDOW_N (sw1, i); | |
7198 | p2 = SAVED_WINDOW_N (sw2, i); | |
7199 | ||
7200 | /* Verify that the current windows in the two | |
7201 | configurations correspond to each other. */ | |
7202 | w1_is_current = EQ (d1->current_window, p1->window); | |
7203 | w2_is_current = EQ (d2->current_window, p2->window); | |
7204 | ||
7205 | if (w1_is_current != w2_is_current) | |
7206 | return 0; | |
7207 | ||
7208 | /* Verify that the corresponding windows do match. */ | |
7209 | if (! EQ (p1->buffer, p2->buffer)) | |
7210 | return 0; | |
949cf20f | 7211 | if (! EQ (p1->left_col, p2->left_col)) |
cbff28e8 | 7212 | return 0; |
949cf20f | 7213 | if (! EQ (p1->top_line, p2->top_line)) |
cbff28e8 | 7214 | return 0; |
949cf20f | 7215 | if (! EQ (p1->total_cols, p2->total_cols)) |
cbff28e8 | 7216 | return 0; |
949cf20f | 7217 | if (! EQ (p1->total_lines, p2->total_lines)) |
cbff28e8 | 7218 | return 0; |
cbff28e8 RS |
7219 | if (! EQ (p1->display_table, p2->display_table)) |
7220 | return 0; | |
7221 | if (! EQ (p1->parent, p2->parent)) | |
7222 | return 0; | |
7223 | if (! EQ (p1->prev, p2->prev)) | |
7224 | return 0; | |
2f8274be RS |
7225 | if (! ignore_positions) |
7226 | { | |
7227 | if (! EQ (p1->hscroll, p2->hscroll)) | |
7228 | return 0; | |
ea68264b GM |
7229 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
7230 | return 0; | |
2f8274be RS |
7231 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
7232 | return 0; | |
7233 | if (NILP (Fequal (p1->start, p2->start))) | |
7234 | return 0; | |
7235 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
7236 | return 0; | |
7237 | if (NILP (Fequal (p1->mark, p2->mark))) | |
7238 | return 0; | |
7239 | } | |
949cf20f KS |
7240 | if (! EQ (p1->left_margin_cols, p2->left_margin_cols)) |
7241 | return 0; | |
7242 | if (! EQ (p1->right_margin_cols, p2->right_margin_cols)) | |
7243 | return 0; | |
7244 | if (! EQ (p1->left_fringe_width, p2->left_fringe_width)) | |
7245 | return 0; | |
7246 | if (! EQ (p1->right_fringe_width, p2->right_fringe_width)) | |
7247 | return 0; | |
7248 | if (! EQ (p1->fringes_outside_margins, p2->fringes_outside_margins)) | |
7249 | return 0; | |
7250 | if (! EQ (p1->scroll_bar_width, p2->scroll_bar_width)) | |
7251 | return 0; | |
7252 | if (! EQ (p1->vertical_scroll_bar_type, p2->vertical_scroll_bar_type)) | |
7253 | return 0; | |
cbff28e8 RS |
7254 | } |
7255 | ||
7256 | return 1; | |
7257 | } | |
2f8274be RS |
7258 | |
7259 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
7260 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
7261 | doc: /* Compare two window configurations as regards the structure of windows. |
7262 | This function ignores details such as the values of point and mark | |
7263 | and scrolling positions. */) | |
7264 | (x, y) | |
2f8274be RS |
7265 | Lisp_Object x, y; |
7266 | { | |
7267 | if (compare_window_configurations (x, y, 1)) | |
7268 | return Qt; | |
7269 | return Qnil; | |
7270 | } | |
cbff28e8 | 7271 | \f |
dfcf069d | 7272 | void |
7ab12479 JB |
7273 | init_window_once () |
7274 | { | |
1ae1a37d GM |
7275 | struct frame *f = make_terminal_frame (); |
7276 | XSETFRAME (selected_frame, f); | |
7277 | Vterminal_frame = selected_frame; | |
7278 | minibuf_window = f->minibuffer_window; | |
7279 | selected_window = f->selected_window; | |
7280 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
7281 | |
7282 | window_initialized = 1; | |
7ab12479 JB |
7283 | } |
7284 | ||
67492200 GM |
7285 | void |
7286 | init_window () | |
7287 | { | |
7288 | Vwindow_list = Qnil; | |
7289 | } | |
7290 | ||
dfcf069d | 7291 | void |
7ab12479 JB |
7292 | syms_of_window () |
7293 | { | |
c525d842 CY |
7294 | Qscroll_up = intern ("scroll-up"); |
7295 | staticpro (&Qscroll_up); | |
7296 | ||
7297 | Qscroll_down = intern ("scroll-down"); | |
7298 | staticpro (&Qscroll_down); | |
7299 | ||
8a37516b GM |
7300 | Qwindow_size_fixed = intern ("window-size-fixed"); |
7301 | staticpro (&Qwindow_size_fixed); | |
c0e7ccd3 | 7302 | Fset (Qwindow_size_fixed, Qnil); |
177c0ea7 | 7303 | |
543f5fb1 RS |
7304 | staticpro (&Qwindow_configuration_change_hook); |
7305 | Qwindow_configuration_change_hook | |
7306 | = intern ("window-configuration-change-hook"); | |
7307 | ||
7ab12479 JB |
7308 | Qwindowp = intern ("windowp"); |
7309 | staticpro (&Qwindowp); | |
7310 | ||
3f8ab7bd RS |
7311 | Qwindow_configuration_p = intern ("window-configuration-p"); |
7312 | staticpro (&Qwindow_configuration_p); | |
7313 | ||
806b4d9b JB |
7314 | Qwindow_live_p = intern ("window-live-p"); |
7315 | staticpro (&Qwindow_live_p); | |
605be8af | 7316 | |
2cccc823 | 7317 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
7318 | staticpro (&Qtemp_buffer_show_hook); |
7319 | ||
67492200 | 7320 | staticpro (&Vwindow_list); |
8bfb170b KS |
7321 | |
7322 | minibuf_selected_window = Qnil; | |
3dbab091 | 7323 | staticpro (&minibuf_selected_window); |
67492200 | 7324 | |
66fe93d1 | 7325 | window_scroll_pixel_based_preserve_y = -1; |
66d43aea | 7326 | |
7ab12479 | 7327 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
fdb82f93 PJ |
7328 | doc: /* Non-nil means call as function to display a help buffer. |
7329 | The function is called with one argument, the buffer to be displayed. | |
7330 | Used by `with-output-to-temp-buffer'. | |
7331 | If this function is used, then it must do the entire job of showing | |
7332 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
7333 | Vtemp_buffer_show_function = Qnil; |
7334 | ||
7335 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
fdb82f93 PJ |
7336 | doc: /* If non-nil, function to call to handle `display-buffer'. |
7337 | It will receive two args, the buffer and a flag which if non-nil means | |
c2755926 LT |
7338 | that the currently selected window is not acceptable. |
7339 | It should choose or create a window, display the specified buffer in it, | |
7340 | and return the window. | |
fdb82f93 PJ |
7341 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window' |
7342 | work using this function. */); | |
7ab12479 JB |
7343 | Vdisplay_buffer_function = Qnil; |
7344 | ||
6529ed87 | 7345 | DEFVAR_LISP ("even-window-heights", &Veven_window_heights, |
fdb82f93 PJ |
7346 | doc: /* *If non-nil, `display-buffer' should even the window heights. |
7347 | If nil, `display-buffer' will leave the window configuration alone. */); | |
6529ed87 GM |
7348 | Veven_window_heights = Qt; |
7349 | ||
7ab12479 | 7350 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
fdb82f93 | 7351 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
7352 | Vminibuf_scroll_window = Qnil; |
7353 | ||
cc91894c | 7354 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows, |
26124d5e | 7355 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
7356 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
7357 | is displayed in the `mode-line' face. */); | |
7358 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 7359 | |
7ab12479 | 7360 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, |
fdb82f93 | 7361 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
7362 | Vother_window_scroll_buffer = Qnil; |
7363 | ||
44fa5b1e | 7364 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
fdb82f93 | 7365 | doc: /* *Non-nil means `display-buffer' should make a separate frame. */); |
44fa5b1e | 7366 | pop_up_frames = 0; |
7ab12479 | 7367 | |
e56263e5 KS |
7368 | DEFVAR_BOOL ("auto-window-vscroll", &auto_window_vscroll_p, |
7369 | doc: /* *Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); | |
7370 | auto_window_vscroll_p = 1; | |
7371 | ||
9c3da604 | 7372 | DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames, |
fdb82f93 PJ |
7373 | doc: /* *Non-nil means `display-buffer' should reuse frames. |
7374 | If the buffer in question is already displayed in a frame, raise that frame. */); | |
9c3da604 GM |
7375 | display_buffer_reuse_frames = 0; |
7376 | ||
44fa5b1e | 7377 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
fdb82f93 PJ |
7378 | doc: /* Function to call to handle automatic new frame creation. |
7379 | It is called with no arguments and should return a newly created frame. | |
7380 | ||
7381 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))' | |
7382 | where `pop-up-frame-alist' would hold the default frame parameters. */); | |
44fa5b1e | 7383 | Vpop_up_frame_function = Qnil; |
7ab12479 | 7384 | |
a90712c2 | 7385 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
fdb82f93 | 7386 | doc: /* *List of buffer names that should have their own special frames. |
c019856e RS |
7387 | Displaying a buffer with `display-buffer' or `pop-to-buffer', |
7388 | if its name is in this list, makes a special frame for it | |
fdb82f93 PJ |
7389 | using `special-display-function'. See also `special-display-regexps'. |
7390 | ||
7391 | An element of the list can be a list instead of just a string. | |
7392 | There are two ways to use a list as an element: | |
7393 | (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...) | |
3cb7143c RS |
7394 | In the first case, the FRAME-PARAMETERS are pairs of the form |
7395 | \(PARAMETER . VALUE); these parameter values are used to create the frame. | |
7396 | In the second case, FUNCTION is called with BUFFER as the first argument, | |
7397 | followed by the OTHER-ARGS--it can display BUFFER in any way it likes. | |
fdb82f93 PJ |
7398 | All this is done by the function found in `special-display-function'. |
7399 | ||
499858c5 RS |
7400 | If the specified frame parameters include (same-buffer . t), the |
7401 | buffer is displayed in the currently selected window. Otherwise, if | |
7402 | they include (same-frame . t), the buffer is displayed in a new window | |
7403 | in the currently selected frame. | |
7404 | ||
fdb82f93 PJ |
7405 | If this variable appears \"not to work\", because you add a name to it |
7406 | but that buffer still appears in the selected window, look at the | |
7407 | values of `same-window-buffer-names' and `same-window-regexps'. | |
7408 | Those variables take precedence over this one. */); | |
a90712c2 RS |
7409 | Vspecial_display_buffer_names = Qnil; |
7410 | ||
7411 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
fdb82f93 | 7412 | doc: /* *List of regexps saying which buffers should have their own special frames. |
c019856e RS |
7413 | When displaying a buffer with `display-buffer' or `pop-to-buffer', |
7414 | if any regexp in this list matches the buffer name, it makes a | |
7415 | special frame for the buffer by calling `special-display-function'. | |
fdb82f93 PJ |
7416 | |
7417 | An element of the list can be a list instead of just a string. | |
7418 | There are two ways to use a list as an element: | |
7419 | (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...) | |
3cb7143c RS |
7420 | In the first case, the FRAME-PARAMETERS are pairs of the form |
7421 | \(PARAMETER . VALUE); these parameter values are used to create the frame. | |
7422 | In the second case, FUNCTION is called with BUFFER as the first argument, | |
7423 | followed by the OTHER-ARGS--it can display the buffer in any way it likes. | |
fdb82f93 PJ |
7424 | All this is done by the function found in `special-display-function'. |
7425 | ||
499858c5 RS |
7426 | If the specified frame parameters include (same-buffer . t), the |
7427 | buffer is displayed in the currently selected window. Otherwise, if | |
7428 | they include (same-frame . t), the buffer is displayed in a new window | |
7429 | in the currently selected frame. | |
7430 | ||
fdb82f93 PJ |
7431 | If this variable appears \"not to work\", because you add a regexp to it |
7432 | but the matching buffers still appear in the selected window, look at the | |
7433 | values of `same-window-buffer-names' and `same-window-regexps'. | |
7434 | Those variables take precedence over this one. */); | |
a90712c2 RS |
7435 | Vspecial_display_regexps = Qnil; |
7436 | ||
7437 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
fdb82f93 PJ |
7438 | doc: /* Function to call to make a new frame for a special buffer. |
7439 | It is called with two arguments, the buffer and optional buffer specific | |
7440 | data, and should return a window displaying that buffer. | |
a5731348 SM |
7441 | The default value normally makes a separate frame for the buffer, |
7442 | using `special-display-frame-alist' to specify the frame parameters. | |
7443 | But if the buffer specific data includes (same-buffer . t) then the | |
7444 | buffer is displayed in the current selected window. | |
7445 | Otherwise if it includes (same-frame . t) then the buffer is displayed in | |
7446 | a new window in the currently selected frame. | |
7447 | ||
7448 | A buffer is special if it is listed in `special-display-buffer-names' | |
fdb82f93 | 7449 | or matches a regexp in `special-display-regexps'. */); |
a90712c2 RS |
7450 | Vspecial_display_function = Qnil; |
7451 | ||
855d8627 | 7452 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
fdb82f93 PJ |
7453 | doc: /* *List of buffer names that should appear in the selected window. |
7454 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer' | |
7455 | switches to it in the selected window, rather than making it appear | |
7456 | in some other window. | |
7457 | ||
7458 | An element of the list can be a cons cell instead of just a string. | |
7459 | Then the car must be a string, which specifies the buffer name. | |
7460 | This is for compatibility with `special-display-buffer-names'; | |
7461 | the cdr of the cons cell is ignored. | |
7462 | ||
7463 | See also `same-window-regexps'. */); | |
855d8627 RS |
7464 | Vsame_window_buffer_names = Qnil; |
7465 | ||
7466 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
fdb82f93 PJ |
7467 | doc: /* *List of regexps saying which buffers should appear in the selected window. |
7468 | If a buffer name matches one of these regexps, then displaying it | |
7469 | using `display-buffer' or `pop-to-buffer' switches to it | |
7470 | in the selected window, rather than making it appear in some other window. | |
7471 | ||
7472 | An element of the list can be a cons cell instead of just a string. | |
7473 | Then the car must be a string, which specifies the buffer name. | |
7474 | This is for compatibility with `special-display-buffer-names'; | |
7475 | the cdr of the cons cell is ignored. | |
7476 | ||
7477 | See also `same-window-buffer-names'. */); | |
855d8627 RS |
7478 | Vsame_window_regexps = Qnil; |
7479 | ||
7ab12479 | 7480 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
fdb82f93 | 7481 | doc: /* *Non-nil means display-buffer should make new windows. */); |
7ab12479 JB |
7482 | pop_up_windows = 1; |
7483 | ||
7484 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
fdb82f93 | 7485 | doc: /* *Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
7486 | next_screen_context_lines = 2; |
7487 | ||
7488 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
bdbae5b8 EZ |
7489 | doc: /* *A window must be at least this tall to be eligible for splitting |
7490 | by `display-buffer'. The value is in line units. | |
fdb82f93 | 7491 | If there is only one window, it is split regardless of this value. */); |
7ab12479 JB |
7492 | split_height_threshold = 500; |
7493 | ||
7494 | DEFVAR_INT ("window-min-height", &window_min_height, | |
bdbae5b8 EZ |
7495 | doc: /* *Delete any window less than this tall (including its mode line). |
7496 | The value is in line units. */); | |
7ab12479 JB |
7497 | window_min_height = 4; |
7498 | ||
7499 | DEFVAR_INT ("window-min-width", &window_min_width, | |
bdbae5b8 | 7500 | doc: /* *Delete any window less than this wide (measured in characters). */); |
7ab12479 JB |
7501 | window_min_width = 10; |
7502 | ||
5500c422 GM |
7503 | DEFVAR_LISP ("scroll-preserve-screen-position", |
7504 | &Vscroll_preserve_screen_position, | |
bdf4ec93 RS |
7505 | doc: /* *Controls if scroll commands move point to keep its screen line unchanged. |
7506 | A value of nil means point does not keep its screen position except | |
7507 | at the scroll margin or window boundary respectively. | |
7508 | A value of t means point keeps its screen position if the scroll | |
7509 | command moved it vertically out of the window, e.g. when scrolling | |
7510 | by full screens. | |
7511 | Any other value means point always keeps its screen position. */); | |
5500c422 | 7512 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 7513 | |
543f5fb1 RS |
7514 | DEFVAR_LISP ("window-configuration-change-hook", |
7515 | &Vwindow_configuration_change_hook, | |
fdb82f93 PJ |
7516 | doc: /* Functions to call when window configuration changes. |
7517 | The selected frame is the one whose configuration has changed. */); | |
543f5fb1 RS |
7518 | Vwindow_configuration_change_hook = Qnil; |
7519 | ||
7ab12479 JB |
7520 | defsubr (&Sselected_window); |
7521 | defsubr (&Sminibuffer_window); | |
7522 | defsubr (&Swindow_minibuffer_p); | |
7523 | defsubr (&Swindowp); | |
806b4d9b | 7524 | defsubr (&Swindow_live_p); |
7ab12479 | 7525 | defsubr (&Spos_visible_in_window_p); |
536833ab | 7526 | defsubr (&Swindow_line_height); |
7ab12479 JB |
7527 | defsubr (&Swindow_buffer); |
7528 | defsubr (&Swindow_height); | |
7529 | defsubr (&Swindow_width); | |
35ea56c9 | 7530 | defsubr (&Swindow_full_width_p); |
7ab12479 JB |
7531 | defsubr (&Swindow_hscroll); |
7532 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
7533 | defsubr (&Swindow_redisplay_end_trigger); |
7534 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 7535 | defsubr (&Swindow_edges); |
c99a9eb3 RS |
7536 | defsubr (&Swindow_pixel_edges); |
7537 | defsubr (&Swindow_inside_edges); | |
7538 | defsubr (&Swindow_inside_pixel_edges); | |
d5783c40 JB |
7539 | defsubr (&Scoordinates_in_window_p); |
7540 | defsubr (&Swindow_at); | |
7ab12479 JB |
7541 | defsubr (&Swindow_point); |
7542 | defsubr (&Swindow_start); | |
7543 | defsubr (&Swindow_end); | |
7544 | defsubr (&Sset_window_point); | |
7545 | defsubr (&Sset_window_start); | |
7546 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 7547 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
7548 | defsubr (&Swindow_display_table); |
7549 | defsubr (&Sset_window_display_table); | |
7550 | defsubr (&Snext_window); | |
7551 | defsubr (&Sprevious_window); | |
7552 | defsubr (&Sother_window); | |
7553 | defsubr (&Sget_lru_window); | |
7554 | defsubr (&Sget_largest_window); | |
7555 | defsubr (&Sget_buffer_window); | |
7556 | defsubr (&Sdelete_other_windows); | |
7557 | defsubr (&Sdelete_windows_on); | |
7558 | defsubr (&Sreplace_buffer_in_windows); | |
7559 | defsubr (&Sdelete_window); | |
7560 | defsubr (&Sset_window_buffer); | |
7561 | defsubr (&Sselect_window); | |
4628f7a4 EN |
7562 | defsubr (&Sspecial_display_p); |
7563 | defsubr (&Ssame_window_p); | |
7ab12479 | 7564 | defsubr (&Sdisplay_buffer); |
e661376d | 7565 | defsubr (&Sforce_window_update); |
7ab12479 JB |
7566 | defsubr (&Ssplit_window); |
7567 | defsubr (&Senlarge_window); | |
7568 | defsubr (&Sshrink_window); | |
0d384044 | 7569 | defsubr (&Sadjust_window_trailing_edge); |
7ab12479 JB |
7570 | defsubr (&Sscroll_up); |
7571 | defsubr (&Sscroll_down); | |
7572 | defsubr (&Sscroll_left); | |
7573 | defsubr (&Sscroll_right); | |
ccd0664b | 7574 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 7575 | defsubr (&Sscroll_other_window); |
fa832261 | 7576 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 7577 | defsubr (&Srecenter); |
81fe0836 | 7578 | defsubr (&Swindow_text_height); |
7ab12479 JB |
7579 | defsubr (&Smove_to_window_line); |
7580 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 7581 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
7582 | defsubr (&Sset_window_configuration); |
7583 | defsubr (&Scurrent_window_configuration); | |
7584 | defsubr (&Ssave_window_excursion); | |
c16e1cc3 | 7585 | defsubr (&Swindow_tree); |
5500c422 GM |
7586 | defsubr (&Sset_window_margins); |
7587 | defsubr (&Swindow_margins); | |
949cf20f KS |
7588 | defsubr (&Sset_window_fringes); |
7589 | defsubr (&Swindow_fringes); | |
7590 | defsubr (&Sset_window_scroll_bars); | |
7591 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
7592 | defsubr (&Swindow_vscroll); |
7593 | defsubr (&Sset_window_vscroll); | |
2f8274be | 7594 | defsubr (&Scompare_window_configurations); |
67492200 | 7595 | defsubr (&Swindow_list); |
7ab12479 JB |
7596 | } |
7597 | ||
dfcf069d | 7598 | void |
7ab12479 JB |
7599 | keys_of_window () |
7600 | { | |
7601 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
7602 | initial_define_key (control_x_map, '2', "split-window"); | |
7603 | initial_define_key (control_x_map, '0', "delete-window"); | |
7604 | initial_define_key (control_x_map, 'o', "other-window"); | |
7605 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
7606 | initial_define_key (control_x_map, '<', "scroll-left"); | |
7607 | initial_define_key (control_x_map, '>', "scroll-right"); | |
7608 | ||
7609 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
7610 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
7611 | initial_define_key (meta_map, 'v', "scroll-down"); | |
7612 | ||
7613 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
7614 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
7615 | } | |
ab5796a9 MB |
7616 | |
7617 | /* arch-tag: 90a9c576-0590-48f1-a5f1-6c96a0452d9f | |
7618 | (do not change this comment) */ |