Commit | Line | Data |
---|---|---|
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, |
aaef169d | 4 | 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. |
7ab12479 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
8 | GNU Emacs is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
1113d9db | 10 | the Free Software Foundation; either version 2, or (at your option) |
7ab12479 JB |
11 | any later version. |
12 | ||
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
20 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
7ab12479 | 22 | |
18160b98 | 23 | #include <config.h> |
7ab12479 JB |
24 | #include "lisp.h" |
25 | #include "buffer.h" | |
3e4731a3 | 26 | #include "keyboard.h" |
e35f6ff7 | 27 | #include "keymap.h" |
44fa5b1e | 28 | #include "frame.h" |
7ab12479 JB |
29 | #include "window.h" |
30 | #include "commands.h" | |
31 | #include "indent.h" | |
32 | #include "termchar.h" | |
33 | #include "disptab.h" | |
dfcf069d | 34 | #include "dispextern.h" |
5500c422 GM |
35 | #include "blockinput.h" |
36 | #include "intervals.h" | |
37 | ||
6d55d620 | 38 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 39 | #include "xterm.h" |
5500c422 | 40 | #endif /* HAVE_X_WINDOWS */ |
8f23f280 AI |
41 | #ifdef WINDOWSNT |
42 | #include "w32term.h" | |
43 | #endif | |
1e3c8885 EZ |
44 | #ifdef MSDOS |
45 | #include "msdos.h" | |
46 | #endif | |
e0f712ba | 47 | #ifdef MAC_OS |
1a578e9b AC |
48 | #include "macterm.h" |
49 | #endif | |
5500c422 | 50 | |
5500c422 | 51 | |
3f8ab7bd | 52 | Lisp_Object Qwindowp, Qwindow_live_p, Qwindow_configuration_p; |
c525d842 | 53 | Lisp_Object Qscroll_up, Qscroll_down; |
90647b07 | 54 | Lisp_Object Qwindow_size_fixed; |
49b996e7 | 55 | extern Lisp_Object Qleft_margin, Qright_margin; |
7ab12479 | 56 | |
521b203e | 57 | static int displayed_window_lines P_ ((struct window *)); |
5e14b1fc | 58 | static struct window *decode_window P_ ((Lisp_Object)); |
5500c422 GM |
59 | static int count_windows P_ ((struct window *)); |
60 | static int get_leaf_windows P_ ((struct window *, struct window **, int)); | |
61 | static void window_scroll P_ ((Lisp_Object, int, int, int)); | |
62 | static void window_scroll_pixel_based P_ ((Lisp_Object, int, int, int)); | |
63 | static void window_scroll_line_based P_ ((Lisp_Object, int, int, int)); | |
233a4a2c | 64 | static int window_min_size_1 P_ ((struct window *, int)); |
f984d4fc | 65 | static int window_min_size P_ ((struct window *, int, int, int *)); |
5fe0b054 | 66 | static void size_window P_ ((Lisp_Object, int, int, int, int, int)); |
f95464e4 | 67 | static int freeze_window_start P_ ((struct window *, void *)); |
f984d4fc | 68 | static int window_fixed_size_p P_ ((struct window *, int, int)); |
56ebfae2 | 69 | static void enlarge_window P_ ((Lisp_Object, int, int)); |
67492200 | 70 | static Lisp_Object window_list P_ ((void)); |
f95464e4 | 71 | static int add_window_to_list P_ ((struct window *, void *)); |
118ea242 GM |
72 | static int candidate_window_p P_ ((Lisp_Object, Lisp_Object, Lisp_Object, |
73 | Lisp_Object)); | |
67492200 GM |
74 | static Lisp_Object next_window P_ ((Lisp_Object, Lisp_Object, |
75 | Lisp_Object, int)); | |
76 | static void decode_next_window_args P_ ((Lisp_Object *, Lisp_Object *, | |
77 | Lisp_Object *)); | |
f95464e4 GM |
78 | static int foreach_window_1 P_ ((struct window *, |
79 | int (* fn) (struct window *, void *), | |
80 | void *)); | |
cd2904bd | 81 | static Lisp_Object window_list_1 P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); |
b7354ddf | 82 | |
7ab12479 JB |
83 | /* This is the window in which the terminal's cursor should |
84 | be left when nothing is being done with it. This must | |
85 | always be a leaf window, and its buffer is selected by | |
86 | the top level editing loop at the end of each command. | |
87 | ||
88 | This value is always the same as | |
44fa5b1e | 89 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
90 | |
91 | Lisp_Object selected_window; | |
92 | ||
67492200 GM |
93 | /* A list of all windows for use by next_window and Fwindow_list. |
94 | Functions creating or deleting windows should invalidate this cache | |
95 | by setting it to nil. */ | |
96 | ||
97 | Lisp_Object Vwindow_list; | |
98 | ||
5500c422 GM |
99 | /* The mini-buffer window of the selected frame. |
100 | Note that you cannot test for mini-bufferness of an arbitrary window | |
101 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 | 102 | the selected window. */ |
5500c422 | 103 | |
7ab12479 JB |
104 | Lisp_Object minibuf_window; |
105 | ||
3f49fddc KS |
106 | /* Non-nil means it is the window whose mode line should be |
107 | shown as the selected window when the minibuffer is selected. */ | |
108 | ||
3dbab091 | 109 | Lisp_Object minibuf_selected_window; |
3f49fddc | 110 | |
7ab12479 | 111 | /* Non-nil means it is the window for C-M-v to scroll |
5500c422 GM |
112 | when the mini-buffer is selected. */ |
113 | ||
7ab12479 JB |
114 | Lisp_Object Vminibuf_scroll_window; |
115 | ||
116 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
5500c422 | 117 | |
7ab12479 JB |
118 | Lisp_Object Vother_window_scroll_buffer; |
119 | ||
7ab12479 | 120 | /* Non-nil means it's function to call to display temp buffers. */ |
5500c422 | 121 | |
7ab12479 JB |
122 | Lisp_Object Vtemp_buffer_show_function; |
123 | ||
e56263e5 KS |
124 | /* Non-zero means line and page scrolling on tall lines (with images) |
125 | does partial scrolling by modifying window-vscroll. */ | |
126 | ||
127 | int auto_window_vscroll_p; | |
128 | ||
cc91894c KS |
129 | /* Non-zero means to use mode-line-inactive face in all windows but the |
130 | selected-window and the minibuffer-scroll-window when the | |
131 | minibuffer is active. */ | |
132 | int mode_line_in_non_selected_windows; | |
26124d5e | 133 | |
7ab12479 | 134 | /* If a window gets smaller than either of these, it is removed. */ |
5500c422 | 135 | |
31ade731 SM |
136 | EMACS_INT window_min_height; |
137 | EMACS_INT window_min_width; | |
7ab12479 JB |
138 | |
139 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
5500c422 | 140 | |
7ab12479 JB |
141 | int pop_up_windows; |
142 | ||
44fa5b1e | 143 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
5500c422 | 144 | |
44fa5b1e | 145 | int pop_up_frames; |
7ab12479 | 146 | |
9c3da604 GM |
147 | /* Nonzero means reuse existing frames for displaying buffers. */ |
148 | ||
149 | int display_buffer_reuse_frames; | |
150 | ||
7ab12479 | 151 | /* Non-nil means use this function instead of default */ |
5500c422 | 152 | |
44fa5b1e | 153 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
154 | |
155 | /* Function to call to handle Fdisplay_buffer. */ | |
5500c422 | 156 | |
7ab12479 JB |
157 | Lisp_Object Vdisplay_buffer_function; |
158 | ||
6529ed87 GM |
159 | /* Non-nil means that Fdisplay_buffer should even the heights of windows. */ |
160 | ||
161 | Lisp_Object Veven_window_heights; | |
162 | ||
a90712c2 | 163 | /* List of buffer *names* for buffers that should have their own frames. */ |
5500c422 | 164 | |
a90712c2 RS |
165 | Lisp_Object Vspecial_display_buffer_names; |
166 | ||
167 | /* List of regexps for buffer names that should have their own frames. */ | |
5500c422 | 168 | |
a90712c2 RS |
169 | Lisp_Object Vspecial_display_regexps; |
170 | ||
171 | /* Function to pop up a special frame. */ | |
5500c422 | 172 | |
a90712c2 RS |
173 | Lisp_Object Vspecial_display_function; |
174 | ||
855d8627 | 175 | /* List of buffer *names* for buffers to appear in selected window. */ |
5500c422 | 176 | |
855d8627 RS |
177 | Lisp_Object Vsame_window_buffer_names; |
178 | ||
179 | /* List of regexps for buffer names to appear in selected window. */ | |
5500c422 | 180 | |
855d8627 RS |
181 | Lisp_Object Vsame_window_regexps; |
182 | ||
a58ec57d | 183 | /* Hook run at end of temp_output_buffer_show. */ |
5500c422 | 184 | |
a58ec57d RS |
185 | Lisp_Object Qtemp_buffer_show_hook; |
186 | ||
37962e60 | 187 | /* Fdisplay_buffer always splits the largest window |
7ab12479 | 188 | if that window is more than this high. */ |
5500c422 | 189 | |
31ade731 | 190 | EMACS_INT split_height_threshold; |
7ab12479 JB |
191 | |
192 | /* Number of lines of continuity in scrolling by screenfuls. */ | |
5500c422 | 193 | |
31ade731 | 194 | EMACS_INT next_screen_context_lines; |
7ab12479 JB |
195 | |
196 | /* Incremented for each window created. */ | |
5500c422 | 197 | |
7ab12479 JB |
198 | static int sequence_number; |
199 | ||
5b03d3c0 | 200 | /* Nonzero after init_window_once has finished. */ |
5500c422 | 201 | |
5b03d3c0 RS |
202 | static int window_initialized; |
203 | ||
543f5fb1 | 204 | /* Hook to run when window config changes. */ |
5500c422 | 205 | |
543f5fb1 RS |
206 | Lisp_Object Qwindow_configuration_change_hook; |
207 | Lisp_Object Vwindow_configuration_change_hook; | |
208 | ||
d0c38d63 | 209 | /* Non-nil means scroll commands try to put point |
9317a85d | 210 | at the same screen height as previously. */ |
9317a85d | 211 | |
5500c422 GM |
212 | Lisp_Object Vscroll_preserve_screen_position; |
213 | ||
0d384044 RS |
214 | /* Incremented by 1 whenever a window is deleted. */ |
215 | ||
216 | int window_deletion_count; | |
217 | ||
66d43aea LT |
218 | /* Used by the function window_scroll_pixel_based */ |
219 | ||
66fe93d1 | 220 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 221 | |
5500c422 | 222 | #if 0 /* This isn't used anywhere. */ |
91a78190 | 223 | /* Nonzero means we can split a frame even if it is "unsplittable". */ |
eddd51c2 | 224 | static int inhibit_frame_unsplittable; |
5500c422 | 225 | #endif /* 0 */ |
7d601aaa | 226 | |
31ade731 | 227 | extern EMACS_INT scroll_margin; |
9317a85d | 228 | |
dba06815 | 229 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
7ab12479 JB |
230 | \f |
231 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
fdb82f93 PJ |
232 | doc: /* Returns t if OBJECT is a window. */) |
233 | (object) | |
413430c5 | 234 | Lisp_Object object; |
7ab12479 | 235 | { |
413430c5 | 236 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
237 | } |
238 | ||
806b4d9b | 239 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
fdb82f93 | 240 | doc: /* Returns t if OBJECT is a window which is currently visible. */) |
413430c5 EN |
241 | (object) |
242 | Lisp_Object object; | |
605be8af | 243 | { |
9e571f49 | 244 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af JB |
245 | } |
246 | ||
7ab12479 JB |
247 | Lisp_Object |
248 | make_window () | |
249 | { | |
cffec418 | 250 | Lisp_Object val; |
7ab12479 | 251 | register struct window *p; |
cffec418 | 252 | |
26605be9 | 253 | p = allocate_window (); |
2a1893f4 SM |
254 | ++sequence_number; |
255 | XSETFASTINT (p->sequence_number, sequence_number); | |
949cf20f KS |
256 | XSETFASTINT (p->left_col, 0); |
257 | XSETFASTINT (p->top_line, 0); | |
258 | XSETFASTINT (p->total_lines, 0); | |
259 | XSETFASTINT (p->total_cols, 0); | |
d834a2e9 | 260 | XSETFASTINT (p->hscroll, 0); |
ea68264b | 261 | XSETFASTINT (p->min_hscroll, 0); |
949cf20f | 262 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
263 | p->start = Fmake_marker (); |
264 | p->pointm = Fmake_marker (); | |
d834a2e9 | 265 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 266 | p->frame = Qnil; |
7ab12479 JB |
267 | p->display_table = Qnil; |
268 | p->dedicated = Qnil; | |
5500c422 GM |
269 | p->pseudo_window_p = 0; |
270 | bzero (&p->cursor, sizeof (p->cursor)); | |
271 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
272 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
273 | p->desired_matrix = p->current_matrix = 0; | |
7a146de2 | 274 | p->nrows_scale_factor = p->ncols_scale_factor = 1; |
5500c422 | 275 | p->phys_cursor_type = -1; |
4b26579e | 276 | p->phys_cursor_width = -1; |
5500c422 GM |
277 | p->must_be_updated_p = 0; |
278 | XSETFASTINT (p->window_end_vpos, 0); | |
279 | XSETFASTINT (p->window_end_pos, 0); | |
280 | p->window_end_valid = Qnil; | |
281 | p->vscroll = 0; | |
cffec418 | 282 | XSETWINDOW (val, p); |
5500c422 | 283 | XSETFASTINT (p->last_point, 0); |
7bbb5782 | 284 | p->frozen_window_start_p = 0; |
6b448755 | 285 | p->last_cursor_off_p = p->cursor_off_p = 0; |
949cf20f KS |
286 | p->left_margin_cols = Qnil; |
287 | p->right_margin_cols = Qnil; | |
288 | p->left_fringe_width = Qnil; | |
289 | p->right_fringe_width = Qnil; | |
290 | p->fringes_outside_margins = Qnil; | |
291 | p->scroll_bar_width = Qnil; | |
292 | p->vertical_scroll_bar_type = Qt; | |
67492200 GM |
293 | |
294 | Vwindow_list = Qnil; | |
7ab12479 JB |
295 | return val; |
296 | } | |
297 | ||
298 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
fdb82f93 PJ |
299 | doc: /* Return the window that the cursor now appears in and commands apply to. */) |
300 | () | |
7ab12479 JB |
301 | { |
302 | return selected_window; | |
303 | } | |
304 | ||
83762ba4 | 305 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
fdb82f93 PJ |
306 | doc: /* Return the window used now for minibuffers. |
307 | If the optional argument FRAME is specified, return the minibuffer window | |
308 | used by that frame. */) | |
309 | (frame) | |
83762ba4 | 310 | Lisp_Object frame; |
7ab12479 | 311 | { |
83762ba4 | 312 | if (NILP (frame)) |
1ae1a37d | 313 | frame = selected_frame; |
b7826503 | 314 | CHECK_LIVE_FRAME (frame); |
83762ba4 | 315 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); |
7ab12479 JB |
316 | } |
317 | ||
605be8af | 318 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
29a831f8 LT |
319 | doc: /* Returns non-nil if WINDOW is a minibuffer window. |
320 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 321 | (window) |
7ab12479 JB |
322 | Lisp_Object window; |
323 | { | |
324 | struct window *w = decode_window (window); | |
53bb6b99 | 325 | return MINI_WINDOW_P (w) ? Qt : Qnil; |
81e4d465 MB |
326 | } |
327 | ||
328 | ||
7ab12479 | 329 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
fdb82f93 | 330 | Spos_visible_in_window_p, 0, 3, 0, |
a0a37a6f | 331 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. |
fdb82f93 PJ |
332 | Return nil if that position is scrolled vertically out of view. |
333 | If a character is only partially visible, nil is returned, unless the | |
334 | optional argument PARTIALLY is non-nil. | |
a0a37a6f | 335 | If POS is only out of view because of horizontal scrolling, return non-nil. |
120b7781 | 336 | If POS is t, it specifies the position of the last visible glyph in WINDOW. |
0cc1039f KS |
337 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. |
338 | ||
339 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
5a857365 KS |
340 | return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), |
341 | where X and Y are the pixel coordinates relative to the top left corner | |
342 | of the window. The remaining elements are omitted if the character after | |
343 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
120b7781 | 344 | off-window at the top and bottom of the row, ROWH is the height of the |
7bbc67d2 | 345 | display row, and VPOS is the row number (0-based) containing POS. */) |
fdb82f93 | 346 | (pos, window, partially) |
5cdb3cf3 | 347 | Lisp_Object pos, window, partially; |
7ab12479 JB |
348 | { |
349 | register struct window *w; | |
7ab12479 JB |
350 | register int posint; |
351 | register struct buffer *buf; | |
9a132b1f | 352 | struct text_pos top; |
0cc1039f | 353 | Lisp_Object in_window = Qnil; |
5a857365 | 354 | int rtop, rbot, rowh, vpos, fully_p = 1; |
0cc1039f | 355 | int x, y; |
7ab12479 | 356 | |
f28b75a9 MB |
357 | w = decode_window (window); |
358 | buf = XBUFFER (w->buffer); | |
359 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
360 | ||
120b7781 KS |
361 | if (EQ (pos, Qt)) |
362 | posint = -1; | |
363 | else if (!NILP (pos)) | |
7ab12479 | 364 | { |
b7826503 | 365 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
366 | posint = XINT (pos); |
367 | } | |
f28b75a9 MB |
368 | else if (w == XWINDOW (selected_window)) |
369 | posint = PT; | |
370 | else | |
371 | posint = XMARKER (w->pointm)->charpos; | |
7ab12479 | 372 | |
0cc1039f KS |
373 | /* If position is above window start or outside buffer boundaries, |
374 | or if window start is out of range, position is not visible. */ | |
120b7781 KS |
375 | if ((EQ (pos, Qt) |
376 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
0cc1039f KS |
377 | && CHARPOS (top) >= BUF_BEGV (buf) |
378 | && CHARPOS (top) <= BUF_ZV (buf) | |
5a857365 | 379 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) |
e56263e5 | 380 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) |
0cc1039f KS |
381 | in_window = Qt; |
382 | ||
383 | if (!NILP (in_window) && !NILP (partially)) | |
5a857365 KS |
384 | { |
385 | Lisp_Object part = Qnil; | |
386 | if (!fully_p) | |
387 | part = list4 (make_number (rtop), make_number (rbot), | |
388 | make_number (rowh), make_number (vpos)); | |
389 | in_window = Fcons (make_number (x), | |
390 | Fcons (make_number (y), part)); | |
391 | } | |
392 | ||
9a132b1f | 393 | return in_window; |
7ab12479 | 394 | } |
53bb6b99 | 395 | |
536833ab | 396 | DEFUN ("window-line-height", Fwindow_line_height, |
7bbc67d2 | 397 | Swindow_line_height, 0, 2, 0, |
536833ab KS |
398 | doc: /* Return height in pixels of text line LINE in window WINDOW. |
399 | If WINDOW is nil or omitted, use selected window. | |
400 | ||
7bbc67d2 KS |
401 | Return height of current line if LINE is omitted or nil. Return height of |
402 | header or mode line if LINE is `header-line' and `mode-line'. | |
403 | Otherwise, LINE is a text line number starting from 0. A negative number | |
404 | counts from the end of the window. | |
536833ab | 405 | |
7bbc67d2 | 406 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height |
536833ab | 407 | in pixels of the visible part of the line, VPOS and YPOS are the |
68e67a4e | 408 | vertical position in lines and pixels of the line, relative to the top |
120b7781 | 409 | of the first text line, and OFFBOT is the number of off-window pixels at |
68e67a4e KS |
410 | the bottom of the text line. If there are off-window pixels at the top |
411 | of the (first) text line, YPOS is negative. | |
536833ab KS |
412 | |
413 | Return nil if window display is not up-to-date. In that case, use | |
414 | `pos-visible-in-window-p' to obtain the information. */) | |
415 | (line, window) | |
416 | Lisp_Object line, window; | |
b3a10345 KS |
417 | { |
418 | register struct window *w; | |
419 | register struct buffer *b; | |
420 | struct glyph_row *row, *end_row; | |
536833ab | 421 | int max_y, crop, i, n; |
b3a10345 KS |
422 | |
423 | w = decode_window (window); | |
424 | ||
425 | if (noninteractive | |
b3a10345 | 426 | || w->pseudo_window_p) |
7bbc67d2 | 427 | return Qnil; |
b3a10345 KS |
428 | |
429 | CHECK_BUFFER (w->buffer); | |
430 | b = XBUFFER (w->buffer); | |
431 | ||
432 | /* Fail if current matrix is not up-to-date. */ | |
433 | if (NILP (w->window_end_valid) | |
434 | || current_buffer->clip_changed | |
435 | || current_buffer->prevent_redisplay_optimizations_p | |
436 | || XFASTINT (w->last_modified) < BUF_MODIFF (b) | |
437 | || XFASTINT (w->last_overlay_modified) < BUF_OVERLAY_MODIFF (b)) | |
438 | return Qnil; | |
439 | ||
7bbc67d2 KS |
440 | if (NILP (line)) |
441 | { | |
442 | i = w->cursor.vpos; | |
443 | if (i < 0 || i >= w->current_matrix->nrows | |
444 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
445 | return Qnil; | |
446 | max_y = window_text_bottom_y (w); | |
447 | goto found_row; | |
448 | } | |
449 | ||
536833ab | 450 | if (EQ (line, Qheader_line)) |
b3a10345 | 451 | { |
536833ab KS |
452 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) |
453 | return Qnil; | |
454 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
b3a10345 KS |
455 | if (!row->enabled_p) |
456 | return Qnil; | |
536833ab KS |
457 | return list4 (make_number (row->height), |
458 | make_number (0), make_number (0), | |
459 | make_number (0)); | |
b3a10345 | 460 | } |
536833ab KS |
461 | |
462 | if (EQ (line, Qmode_line)) | |
b3a10345 | 463 | { |
536833ab KS |
464 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); |
465 | if (!row->enabled_p) | |
466 | return Qnil; | |
467 | return list4 (make_number (row->height), | |
468 | make_number (0), /* not accurate */ | |
469 | make_number (WINDOW_HEADER_LINE_HEIGHT (w) | |
470 | + window_text_bottom_y (w)), | |
471 | make_number (0)); | |
472 | } | |
b3a10345 | 473 | |
536833ab | 474 | CHECK_NUMBER (line); |
7bbc67d2 | 475 | n = XINT (line); |
536833ab KS |
476 | |
477 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
478 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
479 | max_y = window_text_bottom_y (w); | |
7bbc67d2 | 480 | i = 0; |
536833ab KS |
481 | |
482 | while ((n < 0 || i < n) | |
483 | && row <= end_row && row->enabled_p | |
484 | && row->y + row->height < max_y) | |
485 | row++, i++; | |
b3a10345 | 486 | |
536833ab KS |
487 | if (row > end_row || !row->enabled_p) |
488 | return Qnil; | |
489 | ||
7bbc67d2 | 490 | if (++n < 0) |
536833ab KS |
491 | { |
492 | if (-n > i) | |
493 | return Qnil; | |
7bbc67d2 KS |
494 | row += n; |
495 | i += n; | |
b3a10345 KS |
496 | } |
497 | ||
7bbc67d2 | 498 | found_row: |
536833ab KS |
499 | crop = max (0, (row->y + row->height) - max_y); |
500 | return list4 (make_number (row->height + min (0, row->y) - crop), | |
7bbc67d2 | 501 | make_number (i), |
536833ab KS |
502 | make_number (row->y), |
503 | make_number (crop)); | |
b3a10345 KS |
504 | } |
505 | ||
536833ab | 506 | |
7ab12479 JB |
507 | \f |
508 | static struct window * | |
509 | decode_window (window) | |
510 | register Lisp_Object window; | |
511 | { | |
265a9e55 | 512 | if (NILP (window)) |
7ab12479 JB |
513 | return XWINDOW (selected_window); |
514 | ||
b7826503 | 515 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
516 | return XWINDOW (window); |
517 | } | |
518 | ||
e995d23a RS |
519 | static struct window * |
520 | decode_any_window (window) | |
521 | register Lisp_Object window; | |
522 | { | |
523 | if (NILP (window)) | |
524 | return XWINDOW (selected_window); | |
525 | ||
526 | CHECK_WINDOW (window); | |
527 | return XWINDOW (window); | |
528 | } | |
529 | ||
7ab12479 | 530 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
c2755926 LT |
531 | doc: /* Return the buffer that WINDOW is displaying. |
532 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 533 | (window) |
7ab12479 JB |
534 | Lisp_Object window; |
535 | { | |
536 | return decode_window (window)->buffer; | |
537 | } | |
538 | ||
539 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
fdb82f93 PJ |
540 | doc: /* Return the number of lines in WINDOW (including its mode line). */) |
541 | (window) | |
7ab12479 JB |
542 | Lisp_Object window; |
543 | { | |
e995d23a | 544 | return decode_any_window (window)->total_lines; |
7ab12479 JB |
545 | } |
546 | ||
547 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
fdb82f93 PJ |
548 | doc: /* Return the number of display columns in WINDOW. |
549 | This is the width that is usable columns available for text in WINDOW. | |
550 | If you want to find out how many columns WINDOW takes up, | |
551 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */) | |
552 | (window) | |
7ab12479 JB |
553 | Lisp_Object window; |
554 | { | |
e995d23a | 555 | return make_number (window_box_text_cols (decode_any_window (window))); |
7ab12479 JB |
556 | } |
557 | ||
558 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, | |
fdb82f93 PJ |
559 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. */) |
560 | (window) | |
7ab12479 JB |
561 | Lisp_Object window; |
562 | { | |
563 | return decode_window (window)->hscroll; | |
564 | } | |
565 | ||
566 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 | 567 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
a0a37a6f | 568 | Return NCOL. NCOL should be zero or positive. |
ebadb1e4 EZ |
569 | |
570 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 571 | window so that the location of point moves off-window. */) |
fdb82f93 | 572 | (window, ncol) |
ea68264b | 573 | Lisp_Object window, ncol; |
7ab12479 | 574 | { |
ea68264b GM |
575 | struct window *w = decode_window (window); |
576 | int hscroll; | |
7ab12479 | 577 | |
b7826503 | 578 | CHECK_NUMBER (ncol); |
ea68264b | 579 | hscroll = max (0, XINT (ncol)); |
177c0ea7 | 580 | |
ea68264b GM |
581 | /* Prevent redisplay shortcuts when changing the hscroll. */ |
582 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 583 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
177c0ea7 | 584 | |
c67fa410 | 585 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
586 | return ncol; |
587 | } | |
588 | ||
190eb263 RS |
589 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
590 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 PJ |
591 | doc: /* Return WINDOW's redisplay end trigger value. |
592 | See `set-window-redisplay-end-trigger' for more information. */) | |
593 | (window) | |
190eb263 RS |
594 | Lisp_Object window; |
595 | { | |
596 | return decode_window (window)->redisplay_end_trigger; | |
597 | } | |
598 | ||
599 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
600 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
601 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
602 | VALUE should be a buffer position (typically a marker) or nil. | |
603 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
604 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
605 | with two arguments: WINDOW, and the end trigger value. | |
606 | Afterwards the end-trigger value is reset to nil. */) | |
607 | (window, value) | |
190eb263 RS |
608 | register Lisp_Object window, value; |
609 | { | |
610 | register struct window *w; | |
611 | ||
612 | w = decode_window (window); | |
613 | w->redisplay_end_trigger = value; | |
614 | return value; | |
615 | } | |
616 | ||
7ab12479 | 617 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 PJ |
618 | doc: /* Return a list of the edge coordinates of WINDOW. |
619 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
c99a9eb3 RS |
620 | RIGHT is one more than the rightmost column occupied by WINDOW, |
621 | and BOTTOM is one more than the bottommost row occupied by WINDOW. | |
622 | The edges include the space used by the window's scroll bar, | |
623 | display margins, fringes, header line, and mode line, if it has them. | |
624 | To get the edges of the actual text area, use `window-inside-edges'. */) | |
fdb82f93 | 625 | (window) |
7ab12479 JB |
626 | Lisp_Object window; |
627 | { | |
e995d23a | 628 | register struct window *w = decode_any_window (window); |
7ab12479 | 629 | |
949cf20f KS |
630 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
631 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), | |
632 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), | |
633 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), | |
634 | Qnil)))); | |
7ab12479 JB |
635 | } |
636 | ||
c99a9eb3 RS |
637 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
638 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
639 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
640 | RIGHT is one more than the rightmost x position occupied by WINDOW, | |
641 | and BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
642 | The pixel edges include the space used by the window's scroll bar, | |
643 | display margins, fringes, header line, and mode line, if it has them. | |
644 | To get the edges of the actual text area, use `window-inside-pixel-edges'. */) | |
645 | (window) | |
646 | Lisp_Object window; | |
647 | { | |
e995d23a | 648 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
649 | |
650 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w)), | |
651 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w)), | |
652 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w)), | |
653 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w)), | |
654 | Qnil)))); | |
655 | } | |
656 | ||
657 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, | |
658 | doc: /* Return a list of the edge coordinates of WINDOW. | |
659 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
660 | RIGHT is one more than the rightmost column used by text in WINDOW, | |
661 | and BOTTOM is one more than the bottommost row used by text in WINDOW. | |
662 | The inside edges do not include the space used by the window's scroll bar, | |
663 | display margins, fringes, header line, and/or mode line. */) | |
664 | (window) | |
665 | Lisp_Object window; | |
666 | { | |
e995d23a | 667 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
668 | |
669 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w) | |
670 | + WINDOW_LEFT_MARGIN_COLS (w) | |
671 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
672 | make_number (WINDOW_TOP_EDGE_LINE (w) | |
673 | + WINDOW_HEADER_LINE_LINES (w)), | |
f3fbdb1f | 674 | make_number (WINDOW_BOX_RIGHT_EDGE_COL (w) |
c99a9eb3 RS |
675 | - WINDOW_RIGHT_MARGIN_COLS (w) |
676 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
677 | make_number (WINDOW_BOTTOM_EDGE_LINE (w) | |
678 | - WINDOW_MODE_LINE_LINES (w))); | |
679 | } | |
680 | ||
681 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
a0a37a6f | 682 | doc: /* Return a list of the edge pixel coordinates of WINDOW. |
c99a9eb3 RS |
683 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. |
684 | RIGHT is one more than the rightmost x position used by text in WINDOW, | |
685 | and BOTTOM is one more than the bottommost y position used by text in WINDOW. | |
686 | The inside edges do not include the space used by the window's scroll bar, | |
687 | display margins, fringes, header line, and/or mode line. */) | |
688 | (window) | |
689 | Lisp_Object window; | |
690 | { | |
e995d23a | 691 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
692 | |
693 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
694 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
695 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
696 | make_number (WINDOW_TOP_EDGE_Y (w) | |
697 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
f3fbdb1f | 698 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) |
c99a9eb3 RS |
699 | - WINDOW_RIGHT_MARGIN_WIDTH (w) |
700 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
701 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
702 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
703 | } | |
704 | ||
fbad6f9a | 705 | /* Test if the character at column *X, row *Y is within window W. |
341f3858 | 706 | If it is not, return ON_NOTHING; |
d5783c40 JB |
707 | if it is in the window's text area, |
708 | set *x and *y to its location relative to the upper left corner | |
709 | of the window, and | |
341f3858 KS |
710 | return ON_TEXT; |
711 | if it is on the window's modeline, return ON_MODE_LINE; | |
d5783c40 | 712 | if it is on the border between the window and its right sibling, |
341f3858 | 713 | return ON_VERTICAL_BORDER. |
6487f669 RS |
714 | if it is on a scroll bar, |
715 | return ON_SCROLL_BAR. | |
341f3858 | 716 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 717 | if it is in left or right fringe of the window, |
341f3858 KS |
718 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE, and convert *X and *Y |
719 | to window-relative coordinates; | |
49b996e7 | 720 | if it is in the marginal area to the left/right of the window, |
341f3858 KS |
721 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN, and convert *X and *Y |
722 | to window-relative coordinates. | |
5500c422 GM |
723 | |
724 | X and Y are frame relative pixel coordinates. */ | |
725 | ||
7442878f | 726 | static enum window_part |
d5783c40 JB |
727 | coordinates_in_window (w, x, y) |
728 | register struct window *w; | |
729 | register int *x, *y; | |
730 | { | |
b0228ace GM |
731 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
732 | int left_x, right_x, top_y, bottom_y; | |
7442878f | 733 | enum window_part part; |
949cf20f KS |
734 | int ux = FRAME_COLUMN_WIDTH (f); |
735 | int x0 = WINDOW_LEFT_EDGE_X (w); | |
736 | int x1 = WINDOW_RIGHT_EDGE_X (w); | |
dad75588 GM |
737 | /* The width of the area where the vertical line can be dragged. |
738 | (Between mode lines for instance. */ | |
739 | int grabbable_width = ux; | |
949cf20f | 740 | int lmargin_width, rmargin_width, text_left, text_right; |
b0228ace | 741 | |
466539bc EZ |
742 | /* In what's below, we subtract 1 when computing right_x because we |
743 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
744 | if (w->pseudo_window_p) |
745 | { | |
746 | left_x = 0; | |
949cf20f KS |
747 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
748 | top_y = WINDOW_TOP_EDGE_Y (w); | |
749 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 GM |
750 | } |
751 | else | |
752 | { | |
949cf20f KS |
753 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
754 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
755 | top_y = WINDOW_TOP_EDGE_Y (w); | |
756 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 | 757 | } |
37962e60 | 758 | |
949cf20f KS |
759 | /* Outside any interesting row? */ |
760 | if (*y < top_y || *y >= bottom_y) | |
761 | return ON_NOTHING; | |
762 | ||
1cb794ba GM |
763 | /* On the mode line or header line? If it's near the start of |
764 | the mode or header line of window that's has a horizontal | |
765 | sibling, say it's on the vertical line. That's to be able | |
766 | to resize windows horizontally in case we're using toolkit | |
767 | scroll bars. */ | |
b0228ace | 768 | |
1cb794ba | 769 | if (WINDOW_WANTS_MODELINE_P (w) |
0de01dfe | 770 | && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)) |
1cb794ba | 771 | { |
949cf20f KS |
772 | part = ON_MODE_LINE; |
773 | ||
774 | header_vertical_border_check: | |
b0228ace GM |
775 | /* We're somewhere on the mode line. We consider the place |
776 | between mode lines of horizontally adjacent mode lines | |
777 | as the vertical border. If scroll bars on the left, | |
778 | return the right window. */ | |
949cf20f KS |
779 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) |
780 | || WINDOW_RIGHTMOST_P (w)) | |
b0228ace | 781 | { |
949cf20f | 782 | if (!WINDOW_LEFTMOST_P (w) && abs (*x - x0) < grabbable_width) |
f8c62b70 | 783 | { |
3f489dc7 KS |
784 | /* Convert X and Y to window relative coordinates. |
785 | Vertical border is at the left edge of window. */ | |
f8c62b70 NR |
786 | *x = max (0, *x - x0); |
787 | *y -= top_y; | |
788 | return ON_VERTICAL_BORDER; | |
789 | } | |
b0228ace | 790 | } |
79fd290e | 791 | else |
b0228ace | 792 | { |
949cf20f | 793 | if (abs (*x - x1) < grabbable_width) |
f8c62b70 | 794 | { |
3f489dc7 KS |
795 | /* Convert X and Y to window relative coordinates. |
796 | Vertical border is at the right edge of window. */ | |
f8c62b70 NR |
797 | *x = min (x1, *x) - x0; |
798 | *y -= top_y; | |
799 | return ON_VERTICAL_BORDER; | |
800 | } | |
b0228ace | 801 | } |
949cf20f | 802 | |
cb639b8f KS |
803 | if (*x < x0 || *x >= x1) |
804 | return ON_NOTHING; | |
805 | ||
a5303820 KS |
806 | /* Convert X and Y to window relative coordinates. |
807 | Mode line starts at left edge of window. */ | |
808 | *x -= x0; | |
809 | *y -= top_y; | |
949cf20f | 810 | return part; |
b0228ace | 811 | } |
949cf20f KS |
812 | |
813 | if (WINDOW_WANTS_HEADER_LINE_P (w) | |
949cf20f | 814 | && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) |
1cb794ba | 815 | { |
949cf20f KS |
816 | part = ON_HEADER_LINE; |
817 | goto header_vertical_border_check; | |
1cb794ba | 818 | } |
949cf20f | 819 | |
cb639b8f KS |
820 | if (*x < x0 || *x >= x1) |
821 | return ON_NOTHING; | |
822 | ||
949cf20f KS |
823 | /* Outside any interesting column? */ |
824 | if (*x < left_x || *x > right_x) | |
4d1add72 KS |
825 | { |
826 | *y -= top_y; | |
827 | return ON_SCROLL_BAR; | |
828 | } | |
949cf20f KS |
829 | |
830 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
831 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 832 | |
949cf20f KS |
833 | text_left = window_box_left (w, TEXT_AREA); |
834 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
835 | ||
836 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 837 | { |
447e9da0 | 838 | if (!w->pseudo_window_p |
949cf20f | 839 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 840 | && !WINDOW_RIGHTMOST_P (w) |
949cf20f | 841 | && (abs (*x - right_x) < grabbable_width)) |
f8c62b70 | 842 | { |
3f489dc7 KS |
843 | /* Convert X and Y to window relative coordinates. |
844 | Vertical border is at the right edge of window. */ | |
f8c62b70 NR |
845 | *x = min (right_x, *x) - left_x; |
846 | *y -= top_y; | |
847 | return ON_VERTICAL_BORDER; | |
848 | } | |
fbad6f9a | 849 | } |
447e9da0 GM |
850 | else |
851 | { | |
852 | /* Need to say "*x > right_x" rather than >=, since on character | |
853 | terminals, the vertical line's x coordinate is right_x. */ | |
949cf20f KS |
854 | if (!w->pseudo_window_p |
855 | && !WINDOW_RIGHTMOST_P (w) | |
856 | && *x > right_x - ux) | |
b0228ace GM |
857 | { |
858 | /* On the border on the right side of the window? Assume that | |
859 | this area begins at RIGHT_X minus a canonical char width. */ | |
f8c62b70 NR |
860 | *x = min (right_x, *x) - left_x; |
861 | *y -= top_y; | |
949cf20f | 862 | return ON_VERTICAL_BORDER; |
b0228ace | 863 | } |
447e9da0 | 864 | } |
b0228ace | 865 | |
949cf20f KS |
866 | if (*x < text_left) |
867 | { | |
868 | if (lmargin_width > 0 | |
869 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
870 | ? (*x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) | |
871 | : (*x < left_x + lmargin_width))) | |
a5303820 | 872 | { |
0de01dfe | 873 | *x -= left_x; |
a5303820 KS |
874 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) |
875 | *x -= WINDOW_LEFT_FRINGE_WIDTH (w); | |
876 | *y -= top_y; | |
877 | return ON_LEFT_MARGIN; | |
878 | } | |
949cf20f KS |
879 | |
880 | /* Convert X and Y to window-relative pixel coordinates. */ | |
881 | *x -= left_x; | |
882 | *y -= top_y; | |
883 | return ON_LEFT_FRINGE; | |
884 | } | |
885 | ||
886 | if (*x >= text_right) | |
887 | { | |
888 | if (rmargin_width > 0 | |
889 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
890 | ? (*x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) | |
891 | : (*x >= right_x - rmargin_width))) | |
a5303820 | 892 | { |
66d41723 KS |
893 | *x -= right_x - rmargin_width; |
894 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
895 | *x += WINDOW_RIGHT_FRINGE_WIDTH (w); | |
a5303820 KS |
896 | *y -= top_y; |
897 | return ON_RIGHT_MARGIN; | |
898 | } | |
949cf20f KS |
899 | |
900 | /* Convert X and Y to window-relative pixel coordinates. */ | |
901 | *x -= left_x + WINDOW_LEFT_FRINGE_WIDTH (w); | |
902 | *y -= top_y; | |
903 | return ON_RIGHT_FRINGE; | |
904 | } | |
905 | ||
906 | /* Everything special ruled out - must be on text area */ | |
66d41723 | 907 | *x -= text_left; |
949cf20f KS |
908 | *y -= top_y; |
909 | return ON_TEXT; | |
d5783c40 JB |
910 | } |
911 | ||
b0228ace | 912 | |
d5783c40 | 913 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
914 | Scoordinates_in_window_p, 2, 2, 0, |
915 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
916 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
917 | measured in characters from the upper-left corner of the frame. | |
918 | \(0 . 0) denotes the character in the upper left corner of the | |
919 | frame. | |
920 | If COORDINATES are in the text portion of WINDOW, | |
921 | the coordinates relative to the window are returned. | |
922 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
923 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
924 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
925 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 926 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
927 | `vertical-line' is returned. |
928 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
929 | or `right-margin' is returned. */) | |
fdb82f93 | 930 | (coordinates, window) |
d5783c40 JB |
931 | register Lisp_Object coordinates, window; |
932 | { | |
5500c422 GM |
933 | struct window *w; |
934 | struct frame *f; | |
d5783c40 | 935 | int x, y; |
5500c422 | 936 | Lisp_Object lx, ly; |
d5783c40 | 937 | |
e995d23a | 938 | CHECK_WINDOW (window); |
5500c422 GM |
939 | w = XWINDOW (window); |
940 | f = XFRAME (w->frame); | |
b7826503 | 941 | CHECK_CONS (coordinates); |
5500c422 GM |
942 | lx = Fcar (coordinates); |
943 | ly = Fcdr (coordinates); | |
b7826503 PJ |
944 | CHECK_NUMBER_OR_FLOAT (lx); |
945 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
946 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
947 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 GM |
948 | |
949 | switch (coordinates_in_window (w, &x, &y)) | |
d5783c40 | 950 | { |
7442878f | 951 | case ON_NOTHING: |
d5783c40 JB |
952 | return Qnil; |
953 | ||
7442878f GM |
954 | case ON_TEXT: |
955 | /* X and Y are now window relative pixel coordinates. Convert | |
956 | them to canonical char units before returning them. */ | |
949cf20f KS |
957 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
958 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 959 | |
7442878f | 960 | case ON_MODE_LINE: |
d5783c40 | 961 | return Qmode_line; |
37962e60 | 962 | |
7442878f | 963 | case ON_VERTICAL_BORDER: |
e5d77022 | 964 | return Qvertical_line; |
d5783c40 | 965 | |
7442878f | 966 | case ON_HEADER_LINE: |
045dee35 | 967 | return Qheader_line; |
5500c422 | 968 | |
7442878f GM |
969 | case ON_LEFT_FRINGE: |
970 | return Qleft_fringe; | |
177c0ea7 | 971 | |
7442878f GM |
972 | case ON_RIGHT_FRINGE: |
973 | return Qright_fringe; | |
fbad6f9a | 974 | |
49b996e7 GM |
975 | case ON_LEFT_MARGIN: |
976 | return Qleft_margin; | |
177c0ea7 | 977 | |
49b996e7 GM |
978 | case ON_RIGHT_MARGIN: |
979 | return Qright_margin; | |
980 | ||
6487f669 RS |
981 | case ON_SCROLL_BAR: |
982 | /* Historically we are supposed to return nil in this case. */ | |
983 | return Qnil; | |
984 | ||
d5783c40 JB |
985 | default: |
986 | abort (); | |
987 | } | |
988 | } | |
989 | ||
67492200 GM |
990 | |
991 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
992 | Check if window W contains coordinates specified by USER_DATA which |
993 | is actually a pointer to a struct check_window_data CW. | |
994 | ||
995 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
996 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 997 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
998 | zero from this function to stop iterating over windows. */ |
999 | ||
1000 | struct check_window_data | |
1001 | { | |
1002 | Lisp_Object *window; | |
341f3858 KS |
1003 | int *x, *y; |
1004 | enum window_part *part; | |
f95464e4 | 1005 | }; |
67492200 GM |
1006 | |
1007 | static int | |
f95464e4 | 1008 | check_window_containing (w, user_data) |
67492200 | 1009 | struct window *w; |
f95464e4 | 1010 | void *user_data; |
67492200 | 1011 | { |
f95464e4 | 1012 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
1013 | enum window_part found; |
1014 | int continue_p = 1; | |
67492200 | 1015 | |
f95464e4 | 1016 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1017 | if (found != ON_NOTHING) |
67492200 | 1018 | { |
341f3858 | 1019 | *cw->part = found; |
f95464e4 | 1020 | XSETWINDOW (*cw->window, w); |
7442878f | 1021 | continue_p = 0; |
67492200 | 1022 | } |
177c0ea7 | 1023 | |
7442878f | 1024 | return continue_p; |
67492200 GM |
1025 | } |
1026 | ||
1027 | ||
5500c422 | 1028 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1029 | return it as a Lisp_Object. |
1030 | ||
1031 | If X, Y is on one of the window's special `window_part' elements, | |
1032 | set *PART to the id of that element, and return X and Y converted | |
1033 | to window relative coordinates in WX and WY. | |
1034 | ||
341f3858 | 1035 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1036 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1037 | ||
1038 | This function was previously implemented with a loop cycling over | |
1039 | windows with Fnext_window, and starting with the frame's selected | |
1040 | window. It turned out that this doesn't work with an | |
1041 | implementation of next_window using Vwindow_list, because | |
1042 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1043 | tree of F when this function is called asynchronously from | |
1044 | note_mouse_highlight. The original loop didn't terminate in this | |
1045 | case. */ | |
5500c422 | 1046 | |
7ab12479 | 1047 | Lisp_Object |
949cf20f | 1048 | window_from_coordinates (f, x, y, part, wx, wy, tool_bar_p) |
67492200 | 1049 | struct frame *f; |
7ab12479 | 1050 | int x, y; |
341f3858 | 1051 | enum window_part *part; |
949cf20f | 1052 | int *wx, *wy; |
9ea173e8 | 1053 | int tool_bar_p; |
7ab12479 | 1054 | { |
67492200 | 1055 | Lisp_Object window; |
f95464e4 | 1056 | struct check_window_data cw; |
341f3858 KS |
1057 | enum window_part dummy; |
1058 | ||
1059 | if (part == 0) | |
1060 | part = &dummy; | |
5500c422 | 1061 | |
67492200 | 1062 | window = Qnil; |
f95464e4 GM |
1063 | cw.window = &window, cw.x = &x, cw.y = &y; cw.part = part; |
1064 | foreach_window (f, check_window_containing, &cw); | |
177c0ea7 | 1065 | |
67492200 GM |
1066 | /* If not found above, see if it's in the tool bar window, if a tool |
1067 | bar exists. */ | |
1068 | if (NILP (window) | |
1069 | && tool_bar_p | |
1070 | && WINDOWP (f->tool_bar_window) | |
949cf20f | 1071 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 |
7442878f GM |
1072 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), &x, &y) |
1073 | != ON_NOTHING)) | |
5500c422 | 1074 | { |
341f3858 | 1075 | *part = ON_TEXT; |
67492200 | 1076 | window = f->tool_bar_window; |
5500c422 | 1077 | } |
37962e60 | 1078 | |
949cf20f KS |
1079 | if (wx) *wx = x; |
1080 | if (wy) *wy = y; | |
1081 | ||
67492200 | 1082 | return window; |
7ab12479 JB |
1083 | } |
1084 | ||
ab17c3f2 | 1085 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 PJ |
1086 | doc: /* Return window containing coordinates X and Y on FRAME. |
1087 | If omitted, FRAME defaults to the currently selected frame. | |
1088 | The top left corner of the frame is considered to be row 0, | |
1089 | column 0. */) | |
1090 | (x, y, frame) | |
1091 | Lisp_Object x, y, frame; | |
7ab12479 | 1092 | { |
5500c422 | 1093 | struct frame *f; |
7ab12479 | 1094 | |
44fa5b1e | 1095 | if (NILP (frame)) |
1ae1a37d | 1096 | frame = selected_frame; |
b7826503 | 1097 | CHECK_LIVE_FRAME (frame); |
5500c422 | 1098 | f = XFRAME (frame); |
7ab12479 | 1099 | |
5500c422 | 1100 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1101 | CHECK_NUMBER_OR_FLOAT (x); |
1102 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1103 | |
177c0ea7 | 1104 | return window_from_coordinates (f, |
2c77cf3b RS |
1105 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1106 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1107 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1108 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
949cf20f | 1109 | 0, 0, 0, 0); |
7ab12479 JB |
1110 | } |
1111 | ||
1112 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 PJ |
1113 | doc: /* Return current value of point in WINDOW. |
1114 | For a nonselected window, this is the value point would have | |
1115 | if that window were selected. | |
1116 | ||
1117 | Note that, when WINDOW is the selected window and its buffer | |
1118 | is also currently selected, the value returned is the same as (point). | |
1119 | It would be more strictly correct to return the `top-level' value | |
1120 | of point, outside of any save-excursion forms. | |
1121 | But that is hard to define. */) | |
1122 | (window) | |
7ab12479 JB |
1123 | Lisp_Object window; |
1124 | { | |
1125 | register struct window *w = decode_window (window); | |
1126 | ||
1127 | if (w == XWINDOW (selected_window) | |
1128 | && current_buffer == XBUFFER (w->buffer)) | |
1129 | return Fpoint (); | |
1130 | return Fmarker_position (w->pointm); | |
1131 | } | |
1132 | ||
1133 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 PJ |
1134 | doc: /* Return position at which display currently starts in WINDOW. |
1135 | This is updated by redisplay or by calling `set-window-start'. */) | |
1136 | (window) | |
7ab12479 JB |
1137 | Lisp_Object window; |
1138 | { | |
1139 | return Fmarker_position (decode_window (window)->start); | |
1140 | } | |
1141 | ||
8646118f RS |
1142 | /* This is text temporarily removed from the doc string below. |
1143 | ||
fdb82f93 PJ |
1144 | This function returns nil if the position is not currently known. |
1145 | That happens when redisplay is preempted and doesn't finish. | |
1146 | If in that case you want to compute where the end of the window would | |
1147 | have been if redisplay had finished, do this: | |
1148 | (save-excursion | |
1149 | (goto-char (window-start window)) | |
1150 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1151 | (point))") */ |
1152 | ||
478292ed | 1153 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 PJ |
1154 | doc: /* Return position at which display currently ends in WINDOW. |
1155 | This is updated by redisplay, when it runs to completion. | |
1156 | Simply changing the buffer text or setting `window-start' | |
1157 | does not update this value. | |
a0a37a6f LT |
1158 | Return nil if there is no recorded value. \(This can happen if the |
1159 | last redisplay of WINDOW was preempted, and did not finish.) | |
fdb82f93 PJ |
1160 | If UPDATE is non-nil, compute the up-to-date position |
1161 | if it isn't already recorded. */) | |
1162 | (window, update) | |
478292ed | 1163 | Lisp_Object window, update; |
7ab12479 JB |
1164 | { |
1165 | Lisp_Object value; | |
1166 | struct window *w = decode_window (window); | |
5a41ab94 | 1167 | Lisp_Object buf; |
31790df3 | 1168 | struct buffer *b; |
5a41ab94 RS |
1169 | |
1170 | buf = w->buffer; | |
b7826503 | 1171 | CHECK_BUFFER (buf); |
b3a10345 | 1172 | b = XBUFFER (buf); |
5a41ab94 | 1173 | |
8646118f | 1174 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1175 | /* If we don't know the end position, return nil. |
1176 | The user can compute it with vertical-motion if he wants to. | |
1177 | It would be nicer to do it automatically, | |
1178 | but that's so slow that it would probably bother people. */ | |
1179 | if (NILP (w->window_end_valid)) | |
1180 | return Qnil; | |
8646118f | 1181 | #endif |
7250968e | 1182 | |
478292ed RS |
1183 | if (! NILP (update) |
1184 | && ! (! NILP (w->window_end_valid) | |
b3a10345 | 1185 | && XFASTINT (w->last_modified) >= BUF_MODIFF (b)) |
41791a20 | 1186 | && !noninteractive) |
478292ed | 1187 | { |
cbc099e5 GM |
1188 | struct text_pos startp; |
1189 | struct it it; | |
b3a10345 KS |
1190 | struct buffer *old_buffer = NULL; |
1191 | ||
1192 | /* Cannot use Fvertical_motion because that function doesn't | |
1193 | cope with variable-height lines. */ | |
1194 | if (b != current_buffer) | |
1195 | { | |
1196 | old_buffer = current_buffer; | |
1197 | set_buffer_internal (b); | |
1198 | } | |
2d6d9df0 GM |
1199 | |
1200 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1201 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1202 | `-l' containing a call to `rmail' with subsequent other |
1203 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1204 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 1205 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 1206 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 1207 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 1208 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1209 | else |
cbc099e5 GM |
1210 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
1211 | ||
cbc099e5 GM |
1212 | start_display (&it, w, startp); |
1213 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1214 | if (it.current_y < it.last_visible_y) |
1215 | move_it_past_eol (&it); | |
cbc099e5 | 1216 | value = make_number (IT_CHARPOS (it)); |
177c0ea7 | 1217 | |
99593a9d GM |
1218 | if (old_buffer) |
1219 | set_buffer_internal (old_buffer); | |
478292ed RS |
1220 | } |
1221 | else | |
b3a10345 | 1222 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1223 | |
1224 | return value; | |
1225 | } | |
1226 | ||
1227 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
a0a37a6f LT |
1228 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
1229 | Return POS. */) | |
fdb82f93 | 1230 | (window, pos) |
7ab12479 JB |
1231 | Lisp_Object window, pos; |
1232 | { | |
1233 | register struct window *w = decode_window (window); | |
1234 | ||
b7826503 | 1235 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
1236 | if (w == XWINDOW (selected_window) |
1237 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
1238 | Fgoto_char (pos); |
1239 | else | |
1240 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 1241 | |
0685cb3c GM |
1242 | /* We have to make sure that redisplay updates the window to show |
1243 | the new value of point. */ | |
1244 | if (!EQ (window, selected_window)) | |
799417bd | 1245 | ++windows_or_buffers_changed; |
177c0ea7 | 1246 | |
7ab12479 JB |
1247 | return pos; |
1248 | } | |
1249 | ||
1250 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1251 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
a0a37a6f | 1252 | Return POS. |
fdb82f93 PJ |
1253 | Optional third arg NOFORCE non-nil inhibits next redisplay |
1254 | from overriding motion of point in order to display at this exact start. */) | |
1255 | (window, pos, noforce) | |
7ab12479 JB |
1256 | Lisp_Object window, pos, noforce; |
1257 | { | |
1258 | register struct window *w = decode_window (window); | |
1259 | ||
b7826503 | 1260 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
1261 | set_marker_restricted (w->start, pos, w->buffer); |
1262 | /* this is not right, but much easier than doing what is right. */ | |
1263 | w->start_at_line_beg = Qnil; | |
265a9e55 | 1264 | if (NILP (noforce)) |
7ab12479 JB |
1265 | w->force_start = Qt; |
1266 | w->update_mode_line = Qt; | |
d834a2e9 | 1267 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1268 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
1269 | if (!EQ (window, selected_window)) |
1270 | windows_or_buffers_changed++; | |
ce7fae7d | 1271 | |
7ab12479 JB |
1272 | return pos; |
1273 | } | |
1274 | ||
1275 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
1276 | 1, 1, 0, | |
fdb82f93 PJ |
1277 | doc: /* Return WINDOW's dedicated object, usually t or nil. |
1278 | See also `set-window-dedicated-p'. */) | |
1279 | (window) | |
7ab12479 JB |
1280 | Lisp_Object window; |
1281 | { | |
1282 | return decode_window (window)->dedicated; | |
1283 | } | |
1284 | ||
d207b766 RS |
1285 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1286 | Sset_window_dedicated_p, 2, 2, 0, | |
fdb82f93 PJ |
1287 | doc: /* Control whether WINDOW is dedicated to the buffer it displays. |
1288 | If it is dedicated, Emacs will not automatically change | |
1289 | which buffer appears in it. | |
1290 | The second argument is the new value for the dedication flag; | |
1291 | non-nil means yes. */) | |
1292 | (window, arg) | |
1293 | Lisp_Object window, arg; | |
7ab12479 JB |
1294 | { |
1295 | register struct window *w = decode_window (window); | |
1296 | ||
2d0834cc | 1297 | w->dedicated = arg; |
7ab12479 JB |
1298 | |
1299 | return w->dedicated; | |
1300 | } | |
1301 | ||
1302 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
1303 | 0, 1, 0, | |
fdb82f93 PJ |
1304 | doc: /* Return the display-table that WINDOW is using. */) |
1305 | (window) | |
7ab12479 JB |
1306 | Lisp_Object window; |
1307 | { | |
1308 | return decode_window (window)->display_table; | |
1309 | } | |
1310 | ||
5500c422 GM |
1311 | /* Get the display table for use on window W. This is either W's |
1312 | display table or W's buffer's display table. Ignore the specified | |
1313 | tables if they are not valid; if no valid table is specified, | |
1314 | return 0. */ | |
7ab12479 | 1315 | |
319315f1 | 1316 | struct Lisp_Char_Table * |
7ab12479 JB |
1317 | window_display_table (w) |
1318 | struct window *w; | |
1319 | { | |
c756cdbe GM |
1320 | struct Lisp_Char_Table *dp = NULL; |
1321 | ||
1322 | if (DISP_TABLE_P (w->display_table)) | |
1323 | dp = XCHAR_TABLE (w->display_table); | |
1324 | else if (BUFFERP (w->buffer)) | |
1325 | { | |
1326 | struct buffer *b = XBUFFER (w->buffer); | |
177c0ea7 | 1327 | |
c756cdbe GM |
1328 | if (DISP_TABLE_P (b->display_table)) |
1329 | dp = XCHAR_TABLE (b->display_table); | |
1330 | else if (DISP_TABLE_P (Vstandard_display_table)) | |
1331 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1332 | } | |
171d003c | 1333 | |
c756cdbe | 1334 | return dp; |
7ab12479 JB |
1335 | } |
1336 | ||
3a2712f9 | 1337 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 PJ |
1338 | doc: /* Set WINDOW's display-table to TABLE. */) |
1339 | (window, table) | |
7ab12479 JB |
1340 | register Lisp_Object window, table; |
1341 | { | |
1342 | register struct window *w; | |
7ab12479 JB |
1343 | |
1344 | w = decode_window (window); | |
1345 | w->display_table = table; | |
1346 | return table; | |
1347 | } | |
1348 | \f | |
1349 | /* Record info on buffer window w is displaying | |
1350 | when it is about to cease to display that buffer. */ | |
dfcf069d | 1351 | static void |
7ab12479 JB |
1352 | unshow_buffer (w) |
1353 | register struct window *w; | |
1354 | { | |
12cae7c0 | 1355 | Lisp_Object buf; |
b73ea88e | 1356 | struct buffer *b; |
7ab12479 | 1357 | |
12cae7c0 | 1358 | buf = w->buffer; |
b73ea88e RS |
1359 | b = XBUFFER (buf); |
1360 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1361 | abort (); |
1362 | ||
573f41ab | 1363 | #if 0 |
7ab12479 JB |
1364 | if (w == XWINDOW (selected_window) |
1365 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1366 | /* Do this except when the selected window's buffer | |
1367 | is being removed from some other window. */ | |
573f41ab RS |
1368 | #endif |
1369 | /* last_window_start records the start position that this buffer | |
1370 | had in the last window to be disconnected from it. | |
1371 | Now that this statement is unconditional, | |
1372 | it is possible for the buffer to be displayed in the | |
1373 | selected window, while last_window_start reflects another | |
1374 | window which was recently showing the same buffer. | |
1375 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1376 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1377 | |
1378 | /* Point in the selected window's buffer | |
1379 | is actually stored in that buffer, and the window's pointm isn't used. | |
1380 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1381 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1382 | /* This line helps to fix Horsley's testbug.el bug. */ | |
8801a864 KR |
1383 | && !(WINDOWP (b->last_selected_window) |
1384 | && w != XWINDOW (b->last_selected_window) | |
719eaeb1 | 1385 | && EQ (buf, XWINDOW (b->last_selected_window)->buffer))) |
b73ea88e RS |
1386 | temp_set_point_both (b, |
1387 | clip_to_bounds (BUF_BEGV (b), | |
1388 | XMARKER (w->pointm)->charpos, | |
1389 | BUF_ZV (b)), | |
1390 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1391 | marker_byte_position (w->pointm), | |
1392 | BUF_ZV_BYTE (b))); | |
177c0ea7 | 1393 | |
8801a864 KR |
1394 | if (WINDOWP (b->last_selected_window) |
1395 | && w == XWINDOW (b->last_selected_window)) | |
719eaeb1 | 1396 | b->last_selected_window = Qnil; |
7ab12479 JB |
1397 | } |
1398 | ||
1399 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 1400 | static void |
7ab12479 JB |
1401 | replace_window (old, replacement) |
1402 | Lisp_Object old, replacement; | |
1403 | { | |
1404 | register Lisp_Object tem; | |
1405 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
1406 | ||
44fa5b1e JB |
1407 | /* If OLD is its frame's root_window, then replacement is the new |
1408 | root_window for that frame. */ | |
7ab12479 | 1409 | |
7f4161e0 | 1410 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 1411 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 | 1412 | |
949cf20f KS |
1413 | p->left_col = o->left_col; |
1414 | p->top_line = o->top_line; | |
1415 | p->total_cols = o->total_cols; | |
1416 | p->total_lines = o->total_lines; | |
5500c422 GM |
1417 | p->desired_matrix = p->current_matrix = 0; |
1418 | p->vscroll = 0; | |
1419 | bzero (&p->cursor, sizeof (p->cursor)); | |
1420 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
1421 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
1422 | p->phys_cursor_type = -1; | |
4b26579e | 1423 | p->phys_cursor_width = -1; |
5500c422 GM |
1424 | p->must_be_updated_p = 0; |
1425 | p->pseudo_window_p = 0; | |
1426 | XSETFASTINT (p->window_end_vpos, 0); | |
1427 | XSETFASTINT (p->window_end_pos, 0); | |
1428 | p->window_end_valid = Qnil; | |
7bbb5782 | 1429 | p->frozen_window_start_p = 0; |
949cf20f | 1430 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
1431 | |
1432 | p->next = tem = o->next; | |
265a9e55 | 1433 | if (!NILP (tem)) |
7ab12479 JB |
1434 | XWINDOW (tem)->prev = replacement; |
1435 | ||
1436 | p->prev = tem = o->prev; | |
265a9e55 | 1437 | if (!NILP (tem)) |
7ab12479 JB |
1438 | XWINDOW (tem)->next = replacement; |
1439 | ||
1440 | p->parent = tem = o->parent; | |
265a9e55 | 1441 | if (!NILP (tem)) |
7ab12479 JB |
1442 | { |
1443 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1444 | XWINDOW (tem)->vchild = replacement; | |
1445 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1446 | XWINDOW (tem)->hchild = replacement; | |
1447 | } | |
1448 | ||
1449 | /*** Here, if replacement is a vertical combination | |
1450 | and so is its new parent, we should make replacement's | |
1451 | children be children of that parent instead. ***/ | |
1452 | } | |
1453 | ||
1454 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
fdb82f93 PJ |
1455 | doc: /* Remove WINDOW from the display. Default is selected window. */) |
1456 | (window) | |
7ab12479 | 1457 | register Lisp_Object window; |
543f5fb1 RS |
1458 | { |
1459 | delete_window (window); | |
1460 | ||
1461 | if (! NILP (Vwindow_configuration_change_hook) | |
1462 | && ! NILP (Vrun_hooks)) | |
1463 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
1464 | ||
1465 | return Qnil; | |
1466 | } | |
1467 | ||
5e14b1fc | 1468 | void |
543f5fb1 RS |
1469 | delete_window (window) |
1470 | register Lisp_Object window; | |
7ab12479 JB |
1471 | { |
1472 | register Lisp_Object tem, parent, sib; | |
1473 | register struct window *p; | |
1474 | register struct window *par; | |
951f9df5 | 1475 | struct frame *f; |
7ab12479 | 1476 | |
605be8af JB |
1477 | /* Because this function is called by other C code on non-leaf |
1478 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1479 | so we can't decode_window here. */ | |
265a9e55 | 1480 | if (NILP (window)) |
7ab12479 JB |
1481 | window = selected_window; |
1482 | else | |
b7826503 | 1483 | CHECK_WINDOW (window); |
7ab12479 | 1484 | p = XWINDOW (window); |
605be8af | 1485 | |
0d384044 | 1486 | /* It's a no-op to delete an already-deleted window. */ |
605be8af JB |
1487 | if (NILP (p->buffer) |
1488 | && NILP (p->hchild) | |
1489 | && NILP (p->vchild)) | |
296b535c | 1490 | return; |
605be8af | 1491 | |
7ab12479 | 1492 | parent = p->parent; |
265a9e55 | 1493 | if (NILP (parent)) |
7ab12479 JB |
1494 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1495 | par = XWINDOW (parent); | |
1496 | ||
1497 | windows_or_buffers_changed++; | |
67492200 | 1498 | Vwindow_list = Qnil; |
951f9df5 GM |
1499 | f = XFRAME (WINDOW_FRAME (p)); |
1500 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
7ab12479 | 1501 | |
605be8af JB |
1502 | /* Are we trying to delete any frame's selected window? */ |
1503 | { | |
192c3131 | 1504 | Lisp_Object swindow, pwindow; |
605be8af | 1505 | |
0def0403 RS |
1506 | /* See if the frame's selected window is either WINDOW |
1507 | or any subwindow of it, by finding all that window's parents | |
1508 | and comparing each one with WINDOW. */ | |
192c3131 | 1509 | swindow = FRAME_SELECTED_WINDOW (f); |
0def0403 | 1510 | |
192c3131 | 1511 | while (1) |
0def0403 | 1512 | { |
192c3131 RS |
1513 | pwindow = swindow; |
1514 | while (!NILP (pwindow)) | |
1515 | { | |
1516 | if (EQ (window, pwindow)) | |
1517 | break; | |
1518 | pwindow = XWINDOW (pwindow)->parent; | |
1519 | } | |
1520 | ||
1521 | /* If the window being deleted is not a parent of SWINDOW, | |
1522 | then SWINDOW is ok as the new selected window. */ | |
1523 | if (!EQ (window, pwindow)) | |
0def0403 | 1524 | break; |
192c3131 RS |
1525 | /* Otherwise, try another window for SWINDOW. */ |
1526 | swindow = Fnext_window (swindow, Qlambda, Qnil);; | |
1527 | ||
1528 | /* If we get back to the frame's selected window, | |
1529 | it means there was no acceptable alternative, | |
1530 | so we cannot delete. */ | |
1531 | if (EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
1532 | error ("Cannot delete window"); | |
0def0403 RS |
1533 | } |
1534 | ||
192c3131 RS |
1535 | /* If we need to change SWINDOW, do it. */ |
1536 | if (! EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
605be8af | 1537 | { |
605be8af JB |
1538 | /* If we're about to delete the selected window on the |
1539 | selected frame, then we should use Fselect_window to select | |
1540 | the new window. On the other hand, if we're about to | |
1541 | delete the selected window on any other frame, we shouldn't do | |
1542 | anything but set the frame's selected_window slot. */ | |
192c3131 | 1543 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) |
14d87dc9 | 1544 | Fselect_window (swindow, Qnil); |
605be8af | 1545 | else |
192c3131 | 1546 | FRAME_SELECTED_WINDOW (f) = swindow; |
605be8af JB |
1547 | } |
1548 | } | |
7ab12479 | 1549 | |
0d384044 RS |
1550 | /* Now we know we can delete this one. */ |
1551 | window_deletion_count++; | |
1552 | ||
7ab12479 JB |
1553 | tem = p->buffer; |
1554 | /* tem is null for dummy parent windows | |
1555 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1556 | if (!NILP (tem)) |
7ab12479 JB |
1557 | { |
1558 | unshow_buffer (p); | |
2d0834cc SM |
1559 | unchain_marker (XMARKER (p->pointm)); |
1560 | unchain_marker (XMARKER (p->start)); | |
7ab12479 JB |
1561 | } |
1562 | ||
05e71564 GM |
1563 | /* Free window glyph matrices. It is sure that they are allocated |
1564 | again when ADJUST_GLYPHS is called. Block input so that expose | |
1565 | events and other events that access glyph matrices are not | |
1566 | processed while we are changing them. */ | |
1567 | BLOCK_INPUT; | |
951f9df5 | 1568 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f))); |
5500c422 | 1569 | |
7ab12479 | 1570 | tem = p->next; |
265a9e55 | 1571 | if (!NILP (tem)) |
7ab12479 JB |
1572 | XWINDOW (tem)->prev = p->prev; |
1573 | ||
1574 | tem = p->prev; | |
265a9e55 | 1575 | if (!NILP (tem)) |
7ab12479 JB |
1576 | XWINDOW (tem)->next = p->next; |
1577 | ||
1578 | if (EQ (window, par->hchild)) | |
1579 | par->hchild = p->next; | |
1580 | if (EQ (window, par->vchild)) | |
1581 | par->vchild = p->next; | |
1582 | ||
1583 | /* Find one of our siblings to give our space to. */ | |
1584 | sib = p->prev; | |
265a9e55 | 1585 | if (NILP (sib)) |
7ab12479 JB |
1586 | { |
1587 | /* If p gives its space to its next sibling, that sibling needs | |
1588 | to have its top/left side pulled back to where p's is. | |
1589 | set_window_{height,width} will re-position the sibling's | |
1590 | children. */ | |
1591 | sib = p->next; | |
949cf20f KS |
1592 | XWINDOW (sib)->top_line = p->top_line; |
1593 | XWINDOW (sib)->left_col = p->left_col; | |
7ab12479 JB |
1594 | } |
1595 | ||
1596 | /* Stretch that sibling. */ | |
265a9e55 | 1597 | if (!NILP (par->vchild)) |
7ab12479 | 1598 | set_window_height (sib, |
949cf20f | 1599 | XFASTINT (XWINDOW (sib)->total_lines) + XFASTINT (p->total_lines), |
7ab12479 | 1600 | 1); |
265a9e55 | 1601 | if (!NILP (par->hchild)) |
7ab12479 | 1602 | set_window_width (sib, |
949cf20f | 1603 | XFASTINT (XWINDOW (sib)->total_cols) + XFASTINT (p->total_cols), |
7ab12479 JB |
1604 | 1); |
1605 | ||
1606 | /* If parent now has only one child, | |
1607 | put the child into the parent's place. */ | |
7ab12479 | 1608 | tem = par->hchild; |
265a9e55 | 1609 | if (NILP (tem)) |
7ab12479 | 1610 | tem = par->vchild; |
5494d7bc | 1611 | if (NILP (XWINDOW (tem)->next)) { |
7ab12479 | 1612 | replace_window (parent, tem); |
5494d7bc JD |
1613 | par = XWINDOW (tem); |
1614 | } | |
605be8af JB |
1615 | |
1616 | /* Since we may be deleting combination windows, we must make sure that | |
1617 | not only p but all its children have been marked as deleted. */ | |
1618 | if (! NILP (p->hchild)) | |
1619 | delete_all_subwindows (XWINDOW (p->hchild)); | |
1620 | else if (! NILP (p->vchild)) | |
1621 | delete_all_subwindows (XWINDOW (p->vchild)); | |
1622 | ||
1623 | /* Mark this window as deleted. */ | |
1624 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 | 1625 | |
5494d7bc JD |
1626 | if (! NILP (par->parent)) |
1627 | par = XWINDOW (par->parent); | |
1628 | ||
1629 | /* Check if we have a v/hchild with a v/hchild. In that case remove | |
1630 | one of them. */ | |
ae12ecd7 | 1631 | |
5494d7bc JD |
1632 | if (! NILP (par->vchild) && ! NILP (XWINDOW (par->vchild)->vchild)) |
1633 | { | |
1634 | p = XWINDOW (par->vchild); | |
1635 | par->vchild = p->vchild; | |
1636 | tem = p->vchild; | |
1637 | } | |
1638 | else if (! NILP (par->hchild) && ! NILP (XWINDOW (par->hchild)->hchild)) | |
1639 | { | |
1640 | p = XWINDOW (par->hchild); | |
1641 | par->hchild = p->hchild; | |
1642 | tem = p->hchild; | |
1643 | } | |
1644 | else | |
1645 | p = 0; | |
1646 | ||
1647 | if (p) | |
1648 | { | |
1649 | while (! NILP (tem)) { | |
1650 | XWINDOW (tem)->parent = p->parent; | |
1651 | if (NILP (XWINDOW (tem)->next)) | |
1652 | break; | |
1653 | tem = XWINDOW (tem)->next; | |
1654 | } | |
1655 | if (! NILP (tem)) { | |
1656 | /* The next of the v/hchild we are removing is now the next of the | |
1657 | last child for the v/hchild: | |
1658 | Before v/hchild -> v/hchild -> next1 -> next2 | |
1659 | | | |
1660 | -> next3 | |
1661 | After: v/hchild -> next1 -> next2 -> next3 | |
1662 | */ | |
1663 | XWINDOW (tem)->next = p->next; | |
1664 | if (! NILP (p->next)) | |
1665 | XWINDOW (p->next)->prev = tem; | |
1666 | } | |
1667 | p->next = p->prev = p->vchild = p->hchild = p->buffer = Qnil; | |
1668 | } | |
1669 | ||
1670 | ||
5500c422 | 1671 | /* Adjust glyph matrices. */ |
951f9df5 | 1672 | adjust_glyphs (f); |
05e71564 | 1673 | UNBLOCK_INPUT; |
7ab12479 | 1674 | } |
67492200 GM |
1675 | |
1676 | ||
7ab12479 | 1677 | \f |
67492200 GM |
1678 | /*********************************************************************** |
1679 | Window List | |
1680 | ***********************************************************************/ | |
1681 | ||
f95464e4 GM |
1682 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1683 | pointer. This is a callback function for foreach_window, used in | |
1684 | function window_list. */ | |
67492200 GM |
1685 | |
1686 | static int | |
f95464e4 | 1687 | add_window_to_list (w, user_data) |
67492200 | 1688 | struct window *w; |
f95464e4 | 1689 | void *user_data; |
67492200 | 1690 | { |
f95464e4 | 1691 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1692 | Lisp_Object window; |
1693 | XSETWINDOW (window, w); | |
212116d6 | 1694 | *list = Fcons (window, *list); |
67492200 GM |
1695 | return 1; |
1696 | } | |
1697 | ||
1698 | ||
1699 | /* Return a list of all windows, for use by next_window. If | |
1700 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1701 | list, cache it in Vwindow_list, and return that. */ | |
1702 | ||
1703 | static Lisp_Object | |
1704 | window_list () | |
1705 | { | |
1706 | if (!CONSP (Vwindow_list)) | |
1707 | { | |
1708 | Lisp_Object tail; | |
212116d6 | 1709 | |
67492200 GM |
1710 | Vwindow_list = Qnil; |
1711 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1712 | { |
1713 | Lisp_Object args[2]; | |
1714 | ||
1715 | /* We are visiting windows in canonical order, and add | |
1716 | new windows at the front of args[1], which means we | |
1717 | have to reverse this list at the end. */ | |
1718 | args[1] = Qnil; | |
1719 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
1720 | args[0] = Vwindow_list; | |
1721 | args[1] = Fnreverse (args[1]); | |
1722 | Vwindow_list = Fnconc (2, args); | |
1723 | } | |
67492200 | 1724 | } |
177c0ea7 | 1725 | |
67492200 GM |
1726 | return Vwindow_list; |
1727 | } | |
1728 | ||
1729 | ||
118ea242 GM |
1730 | /* Value is non-zero if WINDOW satisfies the constraints given by |
1731 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 1732 | |
118ea242 GM |
1733 | MINIBUF t means WINDOW may be minibuffer windows. |
1734 | `lambda' means WINDOW may not be a minibuffer window. | |
1735 | a window means a specific minibuffer window | |
67492200 | 1736 | |
118ea242 GM |
1737 | ALL_FRAMES t means search all frames, |
1738 | nil means search just current frame, | |
1739 | `visible' means search just visible frames, | |
1740 | 0 means search visible and iconified frames, | |
1741 | a window means search the frame that window belongs to, | |
1742 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
1743 | |
1744 | static int | |
118ea242 GM |
1745 | candidate_window_p (window, owindow, minibuf, all_frames) |
1746 | Lisp_Object window, owindow, minibuf, all_frames; | |
67492200 GM |
1747 | { |
1748 | struct window *w = XWINDOW (window); | |
1749 | struct frame *f = XFRAME (w->frame); | |
1750 | int candidate_p = 1; | |
1751 | ||
1752 | if (!BUFFERP (w->buffer)) | |
1753 | candidate_p = 0; | |
1754 | else if (MINI_WINDOW_P (w) | |
1755 | && (EQ (minibuf, Qlambda) | |
1756 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
1757 | { | |
1758 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
1759 | If it is a window, consider only that one. */ | |
1760 | candidate_p = 0; | |
1761 | } | |
118ea242 GM |
1762 | else if (EQ (all_frames, Qt)) |
1763 | candidate_p = 1; | |
67492200 | 1764 | else if (NILP (all_frames)) |
118ea242 GM |
1765 | { |
1766 | xassert (WINDOWP (owindow)); | |
1767 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
1768 | } | |
67492200 GM |
1769 | else if (EQ (all_frames, Qvisible)) |
1770 | { | |
1771 | FRAME_SAMPLE_VISIBILITY (f); | |
1772 | candidate_p = FRAME_VISIBLE_P (f); | |
1773 | } | |
1774 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
1775 | { | |
1776 | FRAME_SAMPLE_VISIBILITY (f); | |
1777 | candidate_p = FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f); | |
1778 | } | |
67492200 GM |
1779 | else if (WINDOWP (all_frames)) |
1780 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
1781 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
1782 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
1783 | else if (FRAMEP (all_frames)) |
1784 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
1785 | |
1786 | return candidate_p; | |
1787 | } | |
1788 | ||
1789 | ||
1790 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
1791 | Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and | |
1792 | ALL_FRAMES. */ | |
1793 | ||
1794 | static void | |
1795 | decode_next_window_args (window, minibuf, all_frames) | |
1796 | Lisp_Object *window, *minibuf, *all_frames; | |
1797 | { | |
1798 | if (NILP (*window)) | |
1799 | *window = selected_window; | |
1800 | else | |
b7826503 | 1801 | CHECK_LIVE_WINDOW (*window); |
177c0ea7 | 1802 | |
67492200 GM |
1803 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
1804 | does. */ | |
1805 | if (NILP (*minibuf)) | |
1806 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
1807 | else if (!EQ (*minibuf, Qt)) | |
1808 | *minibuf = Qlambda; | |
177c0ea7 | 1809 | |
67492200 GM |
1810 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
1811 | => count none of them, or a specific minibuffer window (the | |
1812 | active one) to count. */ | |
1813 | ||
1814 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
1815 | if (NILP (*all_frames)) | |
1816 | *all_frames = (!EQ (*minibuf, Qlambda) | |
1817 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
1818 | : Qnil); | |
1819 | else if (EQ (*all_frames, Qvisible)) | |
1820 | ; | |
0f8fe9a2 | 1821 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
1822 | ; |
1823 | else if (FRAMEP (*all_frames)) | |
1824 | ; | |
1825 | else if (!EQ (*all_frames, Qt)) | |
1826 | *all_frames = Qnil; | |
177c0ea7 | 1827 | |
67492200 GM |
1828 | /* Now *ALL_FRAMES is t meaning search all frames, nil meaning |
1829 | search just current frame, `visible' meaning search just visible | |
1830 | frames, 0 meaning search visible and iconified frames, or a | |
1831 | window, meaning search the frame that window belongs to, or a | |
1832 | frame, meaning consider windows on that frame, only. */ | |
1833 | } | |
1834 | ||
1835 | ||
1836 | /* Return the next or previous window of WINDOW in canonical ordering | |
1837 | of windows. NEXT_P non-zero means return the next window. See the | |
1838 | documentation string of next-window for the meaning of MINIBUF and | |
1839 | ALL_FRAMES. */ | |
1840 | ||
1841 | static Lisp_Object | |
1842 | next_window (window, minibuf, all_frames, next_p) | |
1843 | Lisp_Object window, minibuf, all_frames; | |
1844 | int next_p; | |
1845 | { | |
1846 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 1847 | |
67492200 GM |
1848 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
1849 | return the first window on the frame. */ | |
1850 | if (FRAMEP (all_frames) | |
1851 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
1852 | return Fframe_first_window (all_frames); | |
177c0ea7 | 1853 | |
212116d6 | 1854 | if (next_p) |
67492200 GM |
1855 | { |
1856 | Lisp_Object list; | |
177c0ea7 | 1857 | |
67492200 GM |
1858 | /* Find WINDOW in the list of all windows. */ |
1859 | list = Fmemq (window, window_list ()); | |
1860 | ||
1861 | /* Scan forward from WINDOW to the end of the window list. */ | |
1862 | if (CONSP (list)) | |
1863 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 1864 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1865 | break; |
1866 | ||
1867 | /* Scan from the start of the window list up to WINDOW. */ | |
1868 | if (!CONSP (list)) | |
1869 | for (list = Vwindow_list; | |
1870 | CONSP (list) && !EQ (XCAR (list), window); | |
1871 | list = XCDR (list)) | |
118ea242 | 1872 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1873 | break; |
1874 | ||
1875 | if (CONSP (list)) | |
1876 | window = XCAR (list); | |
1877 | } | |
1878 | else | |
1879 | { | |
1880 | Lisp_Object candidate, list; | |
177c0ea7 | 1881 | |
67492200 GM |
1882 | /* Scan through the list of windows for candidates. If there are |
1883 | candidate windows in front of WINDOW, the last one of these | |
1884 | is the one we want. If there are candidates following WINDOW | |
1885 | in the list, again the last one of these is the one we want. */ | |
1886 | candidate = Qnil; | |
1887 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
1888 | { | |
1889 | if (EQ (XCAR (list), window)) | |
1890 | { | |
1891 | if (WINDOWP (candidate)) | |
1892 | break; | |
1893 | } | |
118ea242 GM |
1894 | else if (candidate_window_p (XCAR (list), window, minibuf, |
1895 | all_frames)) | |
67492200 GM |
1896 | candidate = XCAR (list); |
1897 | } | |
1898 | ||
1899 | if (WINDOWP (candidate)) | |
1900 | window = candidate; | |
1901 | } | |
1902 | ||
1903 | return window; | |
1904 | } | |
7ab12479 | 1905 | |
7ab12479 | 1906 | |
26f6279d | 1907 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
fdb82f93 PJ |
1908 | doc: /* Return next window after WINDOW in canonical ordering of windows. |
1909 | If omitted, WINDOW defaults to the selected window. | |
1910 | ||
1911 | Optional second arg MINIBUF t means count the minibuffer window even | |
1912 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1913 | it is active. MINIBUF neither t nor nil means not to count the | |
1914 | minibuffer even if it is active. | |
1915 | ||
1916 | Several frames may share a single minibuffer; if the minibuffer | |
1917 | counts, all windows on all frames that share that minibuffer count | |
1918 | too. Therefore, `next-window' can be used to iterate through the | |
1919 | set of windows even when the minibuffer is on another frame. If the | |
1920 | minibuffer does not count, only windows from WINDOW's frame count. | |
1921 | ||
1922 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1923 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1924 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1925 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1926 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1927 | Anything else means restrict to WINDOW's frame. | |
1928 | ||
1929 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1930 | `next-window' to iterate through the entire cycle of acceptable | |
1931 | windows, eventually ending up back at the window you started with. | |
1932 | `previous-window' traverses the same cycle, in the reverse order. */) | |
1933 | (window, minibuf, all_frames) | |
67492200 | 1934 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1935 | { |
67492200 | 1936 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
1937 | } |
1938 | ||
67492200 | 1939 | |
26f6279d | 1940 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
fdb82f93 PJ |
1941 | doc: /* Return the window preceding WINDOW in canonical ordering of windows. |
1942 | If omitted, WINDOW defaults to the selected window. | |
1943 | ||
1944 | Optional second arg MINIBUF t means count the minibuffer window even | |
1945 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1946 | it is active. MINIBUF neither t nor nil means not to count the | |
1947 | minibuffer even if it is active. | |
1948 | ||
1949 | Several frames may share a single minibuffer; if the minibuffer | |
1950 | counts, all windows on all frames that share that minibuffer count | |
1951 | too. Therefore, `previous-window' can be used to iterate through | |
1952 | the set of windows even when the minibuffer is on another frame. If | |
1953 | the minibuffer does not count, only windows from WINDOW's frame count | |
1954 | ||
1955 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1956 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1957 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1958 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1959 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1960 | Anything else means restrict to WINDOW's frame. | |
1961 | ||
1962 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1963 | `previous-window' to iterate through the entire cycle of acceptable | |
1964 | windows, eventually ending up back at the window you started with. | |
1965 | `next-window' traverses the same cycle, in the reverse order. */) | |
1966 | (window, minibuf, all_frames) | |
67492200 | 1967 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1968 | { |
67492200 | 1969 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
1970 | } |
1971 | ||
67492200 | 1972 | |
62c07cc7 | 1973 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
fdb82f93 PJ |
1974 | doc: /* Select the ARG'th different window on this frame. |
1975 | All windows on current frame are arranged in a cyclic order. | |
1976 | This command selects the window ARG steps away in that order. | |
c2755926 | 1977 | A negative ARG moves in the opposite order. The optional second |
8cd0d661 | 1978 | argument ALL-FRAMES has the same meaning as in `next-window', which see. */) |
fdb82f93 | 1979 | (arg, all_frames) |
67492200 | 1980 | Lisp_Object arg, all_frames; |
7ab12479 | 1981 | { |
67492200 GM |
1982 | Lisp_Object window; |
1983 | int i; | |
7ab12479 | 1984 | |
b7826503 | 1985 | CHECK_NUMBER (arg); |
67492200 | 1986 | window = selected_window; |
177c0ea7 | 1987 | |
67492200 GM |
1988 | for (i = XINT (arg); i > 0; --i) |
1989 | window = Fnext_window (window, Qnil, all_frames); | |
1990 | for (; i < 0; ++i) | |
1991 | window = Fprevious_window (window, Qnil, all_frames); | |
50e88778 | 1992 | |
14d87dc9 | 1993 | Fselect_window (window, Qnil); |
7ab12479 JB |
1994 | return Qnil; |
1995 | } | |
67492200 GM |
1996 | |
1997 | ||
1998 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, | |
fdb82f93 PJ |
1999 | doc: /* Return a list of windows on FRAME, starting with WINDOW. |
2000 | FRAME nil or omitted means use the selected frame. | |
2001 | WINDOW nil or omitted means use the selected window. | |
2002 | MINIBUF t means include the minibuffer window, even if it isn't active. | |
2003 | MINIBUF nil or omitted means include the minibuffer window only | |
2004 | if it's active. | |
2005 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2006 | (frame, minibuf, window) | |
cd2904bd GM |
2007 | Lisp_Object frame, minibuf, window; |
2008 | { | |
cd2904bd | 2009 | if (NILP (window)) |
acc6289a SM |
2010 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
2011 | CHECK_WINDOW (window); | |
cd2904bd GM |
2012 | if (NILP (frame)) |
2013 | frame = selected_frame; | |
2014 | ||
2015 | if (!EQ (frame, XWINDOW (window)->frame)) | |
2016 | error ("Window is on a different frame"); | |
2017 | ||
2018 | return window_list_1 (window, minibuf, frame); | |
2019 | } | |
2020 | ||
2021 | ||
2022 | /* Return a list of windows in canonical ordering. Arguments are like | |
2023 | for `next-window'. */ | |
2024 | ||
2025 | static Lisp_Object | |
2026 | window_list_1 (window, minibuf, all_frames) | |
069f5950 | 2027 | Lisp_Object window, minibuf, all_frames; |
67492200 | 2028 | { |
403de3b4 | 2029 | Lisp_Object tail, list, rest; |
67492200 GM |
2030 | |
2031 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2032 | list = Qnil; | |
177c0ea7 | 2033 | |
67492200 | 2034 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2035 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2036 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2037 | |
403de3b4 RS |
2038 | /* Rotate the list to start with WINDOW. */ |
2039 | list = Fnreverse (list); | |
2040 | rest = Fmemq (window, list); | |
2041 | if (!NILP (rest) && !EQ (rest, list)) | |
2042 | { | |
1725a7c9 | 2043 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2044 | ; |
2045 | XSETCDR (tail, Qnil); | |
2046 | list = nconc2 (rest, list); | |
2047 | } | |
2048 | return list; | |
67492200 GM |
2049 | } |
2050 | ||
2051 | ||
7ab12479 JB |
2052 | \f |
2053 | /* Look at all windows, performing an operation specified by TYPE | |
2054 | with argument OBJ. | |
75d8f668 | 2055 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2056 | Qnil, look at just the selected frame; |
89bca612 | 2057 | Qvisible, look at visible frames; |
75d8f668 | 2058 | a frame, just look at windows on that frame. |
85fe3b5e | 2059 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2060 | |
2061 | enum window_loop | |
2062 | { | |
2063 | WINDOW_LOOP_UNUSED, | |
2064 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
2065 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
2066 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
2067 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
2068 | GET_LARGEST_WINDOW, | |
3f8ab7bd | 2069 | UNSHOW_BUFFER, /* Arg is buffer */ |
e661376d | 2070 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ |
3f8ab7bd | 2071 | CHECK_ALL_WINDOWS |
7ab12479 JB |
2072 | }; |
2073 | ||
2074 | static Lisp_Object | |
44fa5b1e | 2075 | window_loop (type, obj, mini, frames) |
7ab12479 | 2076 | enum window_loop type; |
118ea242 | 2077 | Lisp_Object obj, frames; |
7ab12479 JB |
2078 | int mini; |
2079 | { | |
118ea242 GM |
2080 | Lisp_Object window, windows, best_window, frame_arg; |
2081 | struct frame *f; | |
ffdc852d | 2082 | struct gcpro gcpro1; |
177c0ea7 | 2083 | |
44fa5b1e JB |
2084 | /* If we're only looping through windows on a particular frame, |
2085 | frame points to that frame. If we're looping through windows | |
2086 | on all frames, frame is 0. */ | |
2087 | if (FRAMEP (frames)) | |
118ea242 | 2088 | f = XFRAME (frames); |
44fa5b1e | 2089 | else if (NILP (frames)) |
118ea242 | 2090 | f = SELECTED_FRAME (); |
7ab12479 | 2091 | else |
118ea242 | 2092 | f = NULL; |
177c0ea7 | 2093 | |
118ea242 | 2094 | if (f) |
89bca612 | 2095 | frame_arg = Qlambda; |
0f8fe9a2 | 2096 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2097 | frame_arg = frames; |
89bca612 RS |
2098 | else if (EQ (frames, Qvisible)) |
2099 | frame_arg = frames; | |
118ea242 GM |
2100 | else |
2101 | frame_arg = Qt; | |
7ab12479 | 2102 | |
89bca612 RS |
2103 | /* frame_arg is Qlambda to stick to one frame, |
2104 | Qvisible to consider all visible frames, | |
2105 | or Qt otherwise. */ | |
2106 | ||
7ab12479 | 2107 | /* Pick a window to start with. */ |
017b2bad | 2108 | if (WINDOWP (obj)) |
118ea242 GM |
2109 | window = obj; |
2110 | else if (f) | |
2111 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2112 | else |
118ea242 | 2113 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2114 | |
cd2904bd | 2115 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2116 | GCPRO1 (windows); |
7ab12479 | 2117 | best_window = Qnil; |
118ea242 | 2118 | |
e67a1dea | 2119 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2120 | { |
118ea242 | 2121 | struct window *w; |
177c0ea7 | 2122 | |
118ea242 GM |
2123 | window = XCAR (windows); |
2124 | w = XWINDOW (window); | |
177c0ea7 | 2125 | |
118ea242 GM |
2126 | /* Note that we do not pay attention here to whether the frame |
2127 | is visible, since Fwindow_list skips non-visible frames if | |
2128 | that is desired, under the control of frame_arg. */ | |
2129 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
2130 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
2131 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
2132 | || (mini && minibuf_level > 0)) |
2133 | switch (type) | |
2134 | { | |
2135 | case GET_BUFFER_WINDOW: | |
118ea242 | 2136 | if (EQ (w->buffer, obj) |
5c204627 RS |
2137 | /* Don't find any minibuffer window |
2138 | except the one that is currently in use. */ | |
118ea242 GM |
2139 | && (MINI_WINDOW_P (w) |
2140 | ? EQ (window, minibuf_window) | |
2141 | : 1)) | |
2142 | { | |
5ddc1b75 GM |
2143 | if (NILP (best_window)) |
2144 | best_window = window; | |
2145 | else if (EQ (window, selected_window)) | |
2146 | /* For compatibility with 20.x, prefer to return | |
2147 | selected-window. */ | |
2148 | best_window = window; | |
118ea242 | 2149 | } |
7ab12479 JB |
2150 | break; |
2151 | ||
2152 | case GET_LRU_WINDOW: | |
20b69789 SM |
2153 | /* `obj' is an integer encoding a bitvector. |
2154 | `obj & 1' means consider only full-width windows. | |
2155 | `obj & 2' means consider also dedicated windows. */ | |
2156 | if (((XINT (obj) & 1) && !WINDOW_FULL_WIDTH_P (w)) | |
3f489dc7 | 2157 | || (!(XINT (obj) & 2) && !NILP (w->dedicated)) |
20b69789 SM |
2158 | /* Minibuffer windows are always ignored. */ |
2159 | || MINI_WINDOW_P (w)) | |
7ab12479 | 2160 | break; |
265a9e55 | 2161 | if (NILP (best_window) |
7ab12479 | 2162 | || (XFASTINT (XWINDOW (best_window)->use_time) |
118ea242 GM |
2163 | > XFASTINT (w->use_time))) |
2164 | best_window = window; | |
7ab12479 JB |
2165 | break; |
2166 | ||
2167 | case DELETE_OTHER_WINDOWS: | |
118ea242 GM |
2168 | if (!EQ (window, obj)) |
2169 | Fdelete_window (window); | |
7ab12479 JB |
2170 | break; |
2171 | ||
2172 | case DELETE_BUFFER_WINDOWS: | |
118ea242 | 2173 | if (EQ (w->buffer, obj)) |
7ab12479 | 2174 | { |
118ea242 | 2175 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
3548e138 RS |
2176 | |
2177 | /* If this window is dedicated, and in a frame of its own, | |
2178 | kill the frame. */ | |
118ea242 GM |
2179 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2180 | && !NILP (w->dedicated) | |
3548e138 | 2181 | && other_visible_frames (f)) |
7ab12479 | 2182 | { |
3548e138 RS |
2183 | /* Skip the other windows on this frame. |
2184 | There might be one, the minibuffer! */ | |
118ea242 GM |
2185 | while (CONSP (XCDR (windows)) |
2186 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2187 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2188 | windows = XCDR (windows); | |
177c0ea7 | 2189 | |
3548e138 | 2190 | /* Now we can safely delete the frame. */ |
118ea242 GM |
2191 | Fdelete_frame (w->frame, Qnil); |
2192 | } | |
2193 | else if (NILP (w->parent)) | |
2194 | { | |
2195 | /* If we're deleting the buffer displayed in the | |
2196 | only window on the frame, find a new buffer to | |
2197 | display there. */ | |
2198 | Lisp_Object buffer; | |
2199 | buffer = Fother_buffer (obj, Qnil, w->frame); | |
949cf20f | 2200 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2201 | if (EQ (window, selected_window)) |
2202 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2203 | } |
2204 | else | |
118ea242 | 2205 | Fdelete_window (window); |
7ab12479 JB |
2206 | } |
2207 | break; | |
2208 | ||
2209 | case GET_LARGEST_WINDOW: | |
20b69789 | 2210 | { /* nil `obj' means to ignore dedicated windows. */ |
118ea242 | 2211 | /* Ignore dedicated windows and minibuffers. */ |
3f489dc7 | 2212 | if (MINI_WINDOW_P (w) || (NILP (obj) && !NILP (w->dedicated))) |
118ea242 | 2213 | break; |
177c0ea7 | 2214 | |
c930dfab | 2215 | if (NILP (best_window)) |
118ea242 | 2216 | best_window = window; |
c930dfab GM |
2217 | else |
2218 | { | |
2219 | struct window *b = XWINDOW (best_window); | |
949cf20f KS |
2220 | if (XFASTINT (w->total_lines) * XFASTINT (w->total_cols) |
2221 | > XFASTINT (b->total_lines) * XFASTINT (b->total_cols)) | |
c930dfab GM |
2222 | best_window = window; |
2223 | } | |
7ab12479 JB |
2224 | } |
2225 | break; | |
2226 | ||
2227 | case UNSHOW_BUFFER: | |
118ea242 | 2228 | if (EQ (w->buffer, obj)) |
7ab12479 | 2229 | { |
118ea242 GM |
2230 | Lisp_Object buffer; |
2231 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 2232 | |
7ab12479 | 2233 | /* Find another buffer to show in this window. */ |
118ea242 | 2234 | buffer = Fother_buffer (obj, Qnil, w->frame); |
177c0ea7 | 2235 | |
38ab08d1 RS |
2236 | /* If this window is dedicated, and in a frame of its own, |
2237 | kill the frame. */ | |
118ea242 GM |
2238 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2239 | && !NILP (w->dedicated) | |
38ab08d1 | 2240 | && other_visible_frames (f)) |
45945a7b RS |
2241 | { |
2242 | /* Skip the other windows on this frame. | |
2243 | There might be one, the minibuffer! */ | |
118ea242 GM |
2244 | while (CONSP (XCDR (windows)) |
2245 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2246 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2247 | windows = XCDR (windows); | |
177c0ea7 | 2248 | |
45945a7b | 2249 | /* Now we can safely delete the frame. */ |
118ea242 | 2250 | Fdelete_frame (w->frame, Qnil); |
45945a7b | 2251 | } |
a5731348 SM |
2252 | else if (!NILP (w->dedicated) && !NILP (w->parent)) |
2253 | { | |
2254 | Lisp_Object window; | |
2255 | XSETWINDOW (window, w); | |
2256 | /* If this window is dedicated and not the only window | |
2257 | in its frame, then kill it. */ | |
2258 | Fdelete_window (window); | |
2259 | } | |
38ab08d1 | 2260 | else |
38ab08d1 RS |
2261 | { |
2262 | /* Otherwise show a different buffer in the window. */ | |
118ea242 | 2263 | w->dedicated = Qnil; |
949cf20f | 2264 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2265 | if (EQ (window, selected_window)) |
2266 | Fset_buffer (w->buffer); | |
38ab08d1 | 2267 | } |
7ab12479 JB |
2268 | } |
2269 | break; | |
3f8ab7bd | 2270 | |
e661376d KS |
2271 | case REDISPLAY_BUFFER_WINDOWS: |
2272 | if (EQ (w->buffer, obj)) | |
2273 | { | |
2274 | mark_window_display_accurate (window, 0); | |
40c6ee74 KS |
2275 | w->update_mode_line = Qt; |
2276 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; | |
2277 | ++update_mode_lines; | |
e661376d KS |
2278 | best_window = window; |
2279 | } | |
2280 | break; | |
2281 | ||
3f8ab7bd RS |
2282 | /* Check for a window that has a killed buffer. */ |
2283 | case CHECK_ALL_WINDOWS: | |
118ea242 GM |
2284 | if (! NILP (w->buffer) |
2285 | && NILP (XBUFFER (w->buffer)->name)) | |
3f8ab7bd | 2286 | abort (); |
118ea242 | 2287 | break; |
6bbd7a29 GM |
2288 | |
2289 | case WINDOW_LOOP_UNUSED: | |
2290 | break; | |
7ab12479 | 2291 | } |
7ab12479 | 2292 | } |
7ab12479 | 2293 | |
118ea242 | 2294 | UNGCPRO; |
7ab12479 | 2295 | return best_window; |
37962e60 | 2296 | } |
605be8af | 2297 | |
3f8ab7bd RS |
2298 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2299 | ||
233a4a2c | 2300 | void |
3f8ab7bd RS |
2301 | check_all_windows () |
2302 | { | |
2303 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2304 | } | |
2305 | ||
3cbb13c8 | 2306 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 2, 0, |
fdb82f93 | 2307 | doc: /* Return the window least recently selected or used for display. |
a899216f | 2308 | Return a full-width window if possible. |
c2755926 | 2309 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2310 | A dedicated window is never a candidate, unless DEDICATED is non-nil, |
2311 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2312 | If optional argument FRAME is `visible', search all visible frames. |
2313 | If FRAME is 0, search all visible and iconified frames. | |
2314 | If FRAME is t, search all frames. | |
2315 | If FRAME is nil, search only the selected frame. | |
2316 | If FRAME is a frame, search only that frame. */) | |
3cbb13c8 SM |
2317 | (frame, dedicated) |
2318 | Lisp_Object frame, dedicated; | |
7ab12479 JB |
2319 | { |
2320 | register Lisp_Object w; | |
2321 | /* First try for a window that is full-width */ | |
20b69789 SM |
2322 | w = window_loop (GET_LRU_WINDOW, |
2323 | NILP (dedicated) ? make_number (1) : make_number (3), | |
2324 | 0, frame); | |
265a9e55 | 2325 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
2326 | return w; |
2327 | /* If none of them, try the rest */ | |
20b69789 SM |
2328 | return window_loop (GET_LRU_WINDOW, |
2329 | NILP (dedicated) ? make_number (0) : make_number (2), | |
2330 | 0, frame); | |
7ab12479 JB |
2331 | } |
2332 | ||
3cbb13c8 | 2333 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 2, 0, |
fdb82f93 | 2334 | doc: /* Return the largest window in area. |
c2755926 | 2335 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2336 | A dedicated window is never a candidate unless DEDICATED is non-nil, |
2337 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2338 | If optional argument FRAME is `visible', search all visible frames. |
2339 | If FRAME is 0, search all visible and iconified frames. | |
2340 | If FRAME is t, search all frames. | |
2341 | If FRAME is nil, search only the selected frame. | |
2342 | If FRAME is a frame, search only that frame. */) | |
3cbb13c8 SM |
2343 | (frame, dedicated) |
2344 | Lisp_Object frame, dedicated; | |
7ab12479 | 2345 | { |
20b69789 | 2346 | return window_loop (GET_LARGEST_WINDOW, dedicated, 0, |
44fa5b1e | 2347 | frame); |
7ab12479 JB |
2348 | } |
2349 | ||
2350 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
fdb82f93 | 2351 | doc: /* Return a window currently displaying BUFFER, or nil if none. |
c2755926 | 2352 | BUFFER can be a buffer or a buffer name. |
fdb82f93 PJ |
2353 | If optional argument FRAME is `visible', search all visible frames. |
2354 | If optional argument FRAME is 0, search all visible and iconified frames. | |
2355 | If FRAME is t, search all frames. | |
2356 | If FRAME is nil, search only the selected frame. | |
2357 | If FRAME is a frame, search only that frame. */) | |
2358 | (buffer, frame) | |
2359 | Lisp_Object buffer, frame; | |
7ab12479 JB |
2360 | { |
2361 | buffer = Fget_buffer (buffer); | |
017b2bad | 2362 | if (BUFFERP (buffer)) |
44fa5b1e | 2363 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
2364 | else |
2365 | return Qnil; | |
2366 | } | |
2367 | ||
2368 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
fdb82f93 PJ |
2369 | 0, 1, "", |
2370 | doc: /* Make WINDOW (or the selected window) fill its frame. | |
2371 | Only the frame WINDOW is on is affected. | |
2372 | This function tries to reduce display jumps | |
2373 | by keeping the text previously visible in WINDOW | |
2374 | in the same place on the frame. Doing this depends on | |
2375 | the value of (window-start WINDOW), so if calling this function | |
2376 | in a program gives strange scrolling, make sure the window-start | |
2377 | value is reasonable when this function is called. */) | |
2378 | (window) | |
7ab12479 JB |
2379 | Lisp_Object window; |
2380 | { | |
2381 | struct window *w; | |
00d3d838 | 2382 | int startpos; |
85fe3b5e | 2383 | int top, new_top; |
7ab12479 | 2384 | |
265a9e55 | 2385 | if (NILP (window)) |
7ab12479 JB |
2386 | window = selected_window; |
2387 | else | |
b7826503 | 2388 | CHECK_LIVE_WINDOW (window); |
7ab12479 | 2389 | w = XWINDOW (window); |
a2b38b3c | 2390 | |
00d3d838 | 2391 | startpos = marker_position (w->start); |
949cf20f | 2392 | top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 2393 | |
a2b38b3c RS |
2394 | if (MINI_WINDOW_P (w) && top > 0) |
2395 | error ("Can't expand minibuffer to full frame"); | |
2396 | ||
70728a80 | 2397 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 2398 | |
00d3d838 KH |
2399 | /* Try to minimize scrolling, by setting the window start to the point |
2400 | will cause the text at the old window start to be at the same place | |
2401 | on the frame. But don't try to do this if the window start is | |
2402 | outside the visible portion (as might happen when the display is | |
2403 | not current, due to typeahead). */ | |
949cf20f | 2404 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
85fe3b5e GM |
2405 | if (new_top != top |
2406 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
00d3d838 KH |
2407 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) |
2408 | { | |
2409 | struct position pos; | |
2410 | struct buffer *obuf = current_buffer; | |
2411 | ||
2412 | Fset_buffer (w->buffer); | |
2413 | /* This computation used to temporarily move point, but that can | |
2414 | have unwanted side effects due to text properties. */ | |
0383eb57 | 2415 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 2416 | |
b73ea88e | 2417 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
85fe3b5e | 2418 | w->window_end_valid = Qnil; |
b73ea88e RS |
2419 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE |
2420 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 2421 | : Qnil); |
80622eec RS |
2422 | /* We need to do this, so that the window-scroll-functions |
2423 | get called. */ | |
4d047f50 | 2424 | w->optional_new_start = Qt; |
00d3d838 KH |
2425 | |
2426 | set_buffer_internal (obuf); | |
2427 | } | |
5500c422 | 2428 | |
7ab12479 JB |
2429 | return Qnil; |
2430 | } | |
2431 | ||
2432 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
fdb82f93 PJ |
2433 | 1, 2, "bDelete windows on (buffer): ", |
2434 | doc: /* Delete all windows showing BUFFER. | |
c2755926 | 2435 | BUFFER must be a buffer or the name of an existing buffer. |
fdb82f93 PJ |
2436 | Optional second argument FRAME controls which frames are affected. |
2437 | If optional argument FRAME is `visible', search all visible frames. | |
2438 | If FRAME is 0, search all visible and iconified frames. | |
2439 | If FRAME is nil, search all frames. | |
2440 | If FRAME is t, search only the selected frame. | |
2441 | If FRAME is a frame, search only that frame. */) | |
2442 | (buffer, frame) | |
26f6279d | 2443 | Lisp_Object buffer, frame; |
7ab12479 | 2444 | { |
26f6279d JB |
2445 | /* FRAME uses t and nil to mean the opposite of what window_loop |
2446 | expects. */ | |
c520265e RS |
2447 | if (NILP (frame)) |
2448 | frame = Qt; | |
2449 | else if (EQ (frame, Qt)) | |
2450 | frame = Qnil; | |
26f6279d | 2451 | |
265a9e55 | 2452 | if (!NILP (buffer)) |
7ab12479 JB |
2453 | { |
2454 | buffer = Fget_buffer (buffer); | |
b7826503 | 2455 | CHECK_BUFFER (buffer); |
26f6279d | 2456 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 | 2457 | } |
177c0ea7 | 2458 | |
7ab12479 JB |
2459 | return Qnil; |
2460 | } | |
2461 | ||
2462 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
fdb82f93 PJ |
2463 | Sreplace_buffer_in_windows, |
2464 | 1, 1, "bReplace buffer in windows: ", | |
c2755926 LT |
2465 | doc: /* Replace BUFFER with some other buffer in all windows showing it. |
2466 | BUFFER may be a buffer or the name of an existing buffer. */) | |
fdb82f93 | 2467 | (buffer) |
7ab12479 JB |
2468 | Lisp_Object buffer; |
2469 | { | |
265a9e55 | 2470 | if (!NILP (buffer)) |
7ab12479 JB |
2471 | { |
2472 | buffer = Fget_buffer (buffer); | |
b7826503 | 2473 | CHECK_BUFFER (buffer); |
7ab12479 JB |
2474 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); |
2475 | } | |
2476 | return Qnil; | |
2477 | } | |
ff58478b RS |
2478 | |
2479 | /* Replace BUFFER with some other buffer in all windows | |
2480 | of all frames, even those on other keyboards. */ | |
2481 | ||
2482 | void | |
2483 | replace_buffer_in_all_windows (buffer) | |
2484 | Lisp_Object buffer; | |
2485 | { | |
27abb84f | 2486 | #ifdef MULTI_KBOARD |
ff58478b RS |
2487 | Lisp_Object tail, frame; |
2488 | ||
ff58478b RS |
2489 | /* A single call to window_loop won't do the job |
2490 | because it only considers frames on the current keyboard. | |
2491 | So loop manually over frames, and handle each one. */ | |
2492 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 2493 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 2494 | #else |
db7f721d | 2495 | window_loop (UNSHOW_BUFFER, buffer, 1, Qt); |
ff58478b RS |
2496 | #endif |
2497 | } | |
7ab12479 JB |
2498 | \f |
2499 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
2500 | |
2501 | /* The smallest acceptable dimensions for a window. Anything smaller | |
2502 | might crash Emacs. */ | |
5500c422 | 2503 | |
a481b3ea | 2504 | #define MIN_SAFE_WINDOW_WIDTH (2) |
dc1ab1ee | 2505 | #define MIN_SAFE_WINDOW_HEIGHT (1) |
a481b3ea JB |
2506 | |
2507 | /* Make sure that window_min_height and window_min_width are | |
2508 | not too small; if they are, set them to safe minima. */ | |
2509 | ||
2510 | static void | |
2511 | check_min_window_sizes () | |
2512 | { | |
2513 | /* Smaller values might permit a crash. */ | |
2514 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
2515 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
2516 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
2517 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
2518 | } | |
2519 | ||
2520 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
2521 | minimum allowable size. */ | |
5500c422 | 2522 | |
605be8af | 2523 | void |
a481b3ea | 2524 | check_frame_size (frame, rows, cols) |
605be8af JB |
2525 | FRAME_PTR frame; |
2526 | int *rows, *cols; | |
a481b3ea | 2527 | { |
628df3bf | 2528 | /* For height, we have to see: |
54b8bcb5 RS |
2529 | how many windows the frame has at minimum (one or two), |
2530 | and whether it has a menu bar or other special stuff at the top. */ | |
2531 | int min_height | |
2532 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
2533 | ? MIN_SAFE_WINDOW_HEIGHT | |
2534 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 2535 | |
5500c422 GM |
2536 | if (FRAME_TOP_MARGIN (frame) > 0) |
2537 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2538 | |
2539 | if (*rows < min_height) | |
2540 | *rows = min_height; | |
2541 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2542 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2543 | } | |
2544 | ||
c1636aa6 | 2545 | |
233a4a2c GM |
2546 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
2547 | check if W's width can be changed, otherwise check W's height. | |
2548 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
2549 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
2550 | either. */ | |
c1636aa6 | 2551 | |
233a4a2c GM |
2552 | static int |
2553 | window_fixed_size_p (w, width_p, check_siblings_p) | |
2554 | struct window *w; | |
2555 | int width_p, check_siblings_p; | |
2556 | { | |
2557 | int fixed_p; | |
2558 | struct window *c; | |
177c0ea7 | 2559 | |
233a4a2c GM |
2560 | if (!NILP (w->hchild)) |
2561 | { | |
2562 | c = XWINDOW (w->hchild); | |
177c0ea7 | 2563 | |
233a4a2c GM |
2564 | if (width_p) |
2565 | { | |
2566 | /* A horiz. combination is fixed-width if all of if its | |
2567 | children are. */ | |
2568 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2569 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2570 | fixed_p = c == NULL; | |
2571 | } | |
2572 | else | |
2573 | { | |
2574 | /* A horiz. combination is fixed-height if one of if its | |
2575 | children is. */ | |
2576 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2577 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2578 | fixed_p = c != NULL; | |
2579 | } | |
2580 | } | |
2581 | else if (!NILP (w->vchild)) | |
2582 | { | |
2583 | c = XWINDOW (w->vchild); | |
177c0ea7 | 2584 | |
233a4a2c GM |
2585 | if (width_p) |
2586 | { | |
2587 | /* A vert. combination is fixed-width if one of if its | |
2588 | children is. */ | |
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 vert. combination is fixed-height if all of if its | |
2596 | children are. */ | |
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 (BUFFERP (w->buffer)) | |
2603 | { | |
3df0580e AS |
2604 | struct buffer *old = current_buffer; |
2605 | Lisp_Object val; | |
177c0ea7 | 2606 | |
3df0580e AS |
2607 | current_buffer = XBUFFER (w->buffer); |
2608 | val = find_symbol_value (Qwindow_size_fixed); | |
2609 | current_buffer = old; | |
a34dfd12 | 2610 | |
3df0580e AS |
2611 | fixed_p = 0; |
2612 | if (!EQ (val, Qunbound)) | |
2613 | { | |
2614 | fixed_p = !NILP (val); | |
177c0ea7 | 2615 | |
3df0580e AS |
2616 | if (fixed_p |
2617 | && ((EQ (val, Qheight) && width_p) | |
2618 | || (EQ (val, Qwidth) && !width_p))) | |
2619 | fixed_p = 0; | |
233a4a2c GM |
2620 | } |
2621 | ||
2622 | /* Can't tell if this one is resizable without looking at | |
2623 | siblings. If all siblings are fixed-size this one is too. */ | |
2624 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2625 | { | |
2626 | Lisp_Object child; | |
177c0ea7 | 2627 | |
233a4a2c GM |
2628 | for (child = w->prev; !NILP (child); child = XWINDOW (child)->prev) |
2629 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2630 | break; | |
2631 | ||
2632 | if (NILP (child)) | |
2633 | for (child = w->next; !NILP (child); child = XWINDOW (child)->next) | |
2634 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2635 | break; | |
2636 | ||
2637 | if (NILP (child)) | |
2638 | fixed_p = 1; | |
2639 | } | |
2640 | } | |
2641 | else | |
2642 | fixed_p = 1; | |
2643 | ||
2644 | return fixed_p; | |
2645 | } | |
177c0ea7 | 2646 | |
233a4a2c GM |
2647 | |
2648 | /* Return the minimum size of window W, not taking fixed-width windows | |
2649 | into account. WIDTH_P non-zero means return the minimum width, | |
2650 | otherwise return the minimum height. If W is a combination window, | |
2651 | compute the minimum size from the minimum sizes of W's children. */ | |
2652 | ||
2653 | static int | |
2654 | window_min_size_1 (w, width_p) | |
c1636aa6 GM |
2655 | struct window *w; |
2656 | int width_p; | |
2657 | { | |
233a4a2c | 2658 | struct window *c; |
c1636aa6 | 2659 | int size; |
177c0ea7 | 2660 | |
233a4a2c GM |
2661 | if (!NILP (w->hchild)) |
2662 | { | |
2663 | c = XWINDOW (w->hchild); | |
2664 | size = 0; | |
177c0ea7 | 2665 | |
233a4a2c GM |
2666 | if (width_p) |
2667 | { | |
2668 | /* The min width of a horizontal combination is | |
2669 | the sum of the min widths of its children. */ | |
2670 | while (c) | |
2671 | { | |
2672 | size += window_min_size_1 (c, width_p); | |
2673 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2674 | } | |
2675 | } | |
2676 | else | |
2677 | { | |
2678 | /* The min height a horizontal combination equals | |
2679 | the maximum of all min height of its children. */ | |
2680 | while (c) | |
2681 | { | |
2682 | int min_size = window_min_size_1 (c, width_p); | |
2683 | size = max (min_size, size); | |
2684 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2685 | } | |
2686 | } | |
2687 | } | |
2688 | else if (!NILP (w->vchild)) | |
2689 | { | |
2690 | c = XWINDOW (w->vchild); | |
2691 | size = 0; | |
177c0ea7 | 2692 | |
233a4a2c GM |
2693 | if (width_p) |
2694 | { | |
2695 | /* The min width of a vertical combination is | |
2696 | the maximum of the min widths of its children. */ | |
2697 | while (c) | |
2698 | { | |
2699 | int min_size = window_min_size_1 (c, width_p); | |
2700 | size = max (min_size, size); | |
2701 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2702 | } | |
2703 | } | |
2704 | else | |
2705 | { | |
2706 | /* The min height of a vertical combination equals | |
2707 | the sum of the min height of its children. */ | |
2708 | while (c) | |
2709 | { | |
2710 | size += window_min_size_1 (c, width_p); | |
2711 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2712 | } | |
2713 | } | |
2714 | } | |
c1636aa6 GM |
2715 | else |
2716 | { | |
233a4a2c | 2717 | if (width_p) |
da7520de CY |
2718 | size = max (window_min_width, |
2719 | (MIN_SAFE_WINDOW_WIDTH | |
2720 | + WINDOW_FRINGE_COLS (w) | |
2721 | + WINDOW_SCROLL_BAR_COLS (w))); | |
c1636aa6 | 2722 | else |
233a4a2c GM |
2723 | { |
2724 | if (MINI_WINDOW_P (w) | |
2725 | || (!WINDOW_WANTS_MODELINE_P (w) | |
045dee35 | 2726 | && !WINDOW_WANTS_HEADER_LINE_P (w))) |
233a4a2c GM |
2727 | size = 1; |
2728 | else | |
2729 | size = window_min_height; | |
2730 | } | |
c1636aa6 GM |
2731 | } |
2732 | ||
2733 | return size; | |
2734 | } | |
2735 | ||
2736 | ||
233a4a2c GM |
2737 | /* Return the minimum size of window W, taking fixed-size windows into |
2738 | account. WIDTH_P non-zero means return the minimum width, | |
f984d4fc GM |
2739 | otherwise return the minimum height. IGNORE_FIXED_P non-zero means |
2740 | ignore if W is fixed-size. Set *FIXED to 1 if W is fixed-size | |
2741 | unless FIXED is null. */ | |
7ab12479 | 2742 | |
233a4a2c | 2743 | static int |
f984d4fc | 2744 | window_min_size (w, width_p, ignore_fixed_p, fixed) |
233a4a2c | 2745 | struct window *w; |
f984d4fc | 2746 | int width_p, ignore_fixed_p, *fixed; |
233a4a2c GM |
2747 | { |
2748 | int size, fixed_p; | |
2749 | ||
f984d4fc GM |
2750 | if (ignore_fixed_p) |
2751 | fixed_p = 0; | |
2752 | else | |
2753 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
177c0ea7 | 2754 | |
233a4a2c GM |
2755 | if (fixed) |
2756 | *fixed = fixed_p; | |
177c0ea7 | 2757 | |
233a4a2c | 2758 | if (fixed_p) |
949cf20f | 2759 | size = width_p ? XFASTINT (w->total_cols) : XFASTINT (w->total_lines); |
233a4a2c GM |
2760 | else |
2761 | size = window_min_size_1 (w, width_p); | |
177c0ea7 | 2762 | |
233a4a2c GM |
2763 | return size; |
2764 | } | |
2765 | ||
2766 | ||
79fd290e | 2767 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
2768 | Return 1 if window width is ok after adjustment; 0 if window |
2769 | is still too narrow. */ | |
2770 | ||
2771 | static int | |
2772 | adjust_window_margins (w) | |
2773 | struct window *w; | |
2774 | { | |
2775 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
2776 | - WINDOW_FRINGE_COLS (w) | |
2777 | - WINDOW_SCROLL_BAR_COLS (w)); | |
2778 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
2779 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
2780 | ||
2781 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
2782 | return 1; | |
2783 | ||
2784 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
2785 | return 0; | |
2786 | ||
2787 | /* Window's text area is too narrow, but reducing the window | |
2788 | margins will fix that. */ | |
2789 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
2790 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
2791 | { | |
2792 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
2793 | w->left_margin_cols = w->right_margin_cols | |
2794 | = make_number (margin_cols/2); | |
2795 | else | |
2796 | w->right_margin_cols = make_number (margin_cols); | |
2797 | } | |
2798 | else | |
2799 | w->left_margin_cols = make_number (margin_cols); | |
2800 | return 1; | |
2801 | } | |
2802 | ||
0aa513ed JD |
2803 | /* Calculate new sizes for windows in the list FORWARD when the window size |
2804 | goes from TOTAL to SIZE. TOTAL must be greater than SIZE. | |
2805 | The number of windows in FORWARD is NCHILDREN, and the number that | |
2806 | can shrink is SHRINKABLE. | |
2807 | The minimum size a window can have is MIN_SIZE. | |
2808 | If we are shrinking fixed windows, RESIZE_FIXED_P is non-zero. | |
2809 | If we are shrinking columns, WIDTH_P is non-zero, otherwise we are | |
2810 | shrinking rows. | |
2811 | ||
2812 | This function returns an allocated array of new sizes that the caller | |
2813 | must free. The size -1 means the window is fixed and RESIZE_FIXED_P | |
2814 | is zero. Array index 0 refers to the first window in FORWARD, 1 to | |
2815 | the second, and so on. | |
2816 | ||
2817 | This function tries to keep windows at least at the minimum size | |
2818 | and resize other windows before it resizes any window to zero (i.e. | |
2819 | delete that window). | |
2820 | ||
2821 | Windows are resized proportional to their size, so bigger windows | |
2822 | shrink more than smaller windows. */ | |
2823 | static int * | |
2824 | shrink_windows (total, size, nchildren, shrinkable, | |
2825 | min_size, resize_fixed_p, forward, width_p) | |
2826 | int total, size, nchildren, shrinkable, min_size; | |
2827 | int resize_fixed_p, width_p; | |
2828 | Lisp_Object forward; | |
2829 | { | |
2830 | int available_resize = 0; | |
2831 | int *new_sizes; | |
2832 | struct window *c; | |
2833 | Lisp_Object child; | |
2834 | int smallest = total; | |
2835 | int total_removed = 0; | |
2836 | int total_shrink = total - size; | |
2837 | int i; | |
2838 | ||
2839 | new_sizes = xmalloc (sizeof (*new_sizes) * nchildren); | |
2840 | ||
2841 | for (i = 0, child = forward; !NILP (child); child = c->next, ++i) | |
2842 | { | |
2843 | int child_size; | |
2844 | ||
2845 | c = XWINDOW (child); | |
2846 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); | |
2847 | ||
2848 | if (! resize_fixed_p && window_fixed_size_p (c, width_p, 0)) | |
2849 | new_sizes[i] = -1; | |
2850 | else | |
2851 | { | |
2852 | new_sizes[i] = child_size; | |
2853 | if (child_size > min_size) | |
2854 | available_resize += child_size - min_size; | |
2855 | } | |
2856 | } | |
2857 | /* We might need to shrink some windows to zero. Find the smallest | |
2858 | windows and set them to 0 until we can fulfil the new size. */ | |
2859 | ||
2860 | while (shrinkable > 1 && size + available_resize < total) | |
2861 | { | |
2862 | for (i = 0; i < nchildren; ++i) | |
2863 | if (new_sizes[i] > 0 && smallest > new_sizes[i]) | |
2864 | smallest = new_sizes[i]; | |
2865 | ||
2866 | for (i = 0; i < nchildren; ++i) | |
2867 | if (new_sizes[i] == smallest) | |
2868 | { | |
2869 | /* Resize this window down to zero. */ | |
2870 | new_sizes[i] = 0; | |
2871 | if (smallest > min_size) | |
2872 | available_resize -= smallest - min_size; | |
2873 | available_resize += smallest; | |
2874 | --shrinkable; | |
2875 | total_removed += smallest; | |
2876 | ||
ef614e04 JD |
2877 | /* We don't know what the smallest is now. */ |
2878 | smallest = total; | |
2879 | ||
0aa513ed JD |
2880 | /* Out of for, just remove one window at the time and |
2881 | check again if we have enough space. */ | |
2882 | break; | |
2883 | } | |
2884 | } | |
2885 | ||
2886 | /* Now, calculate the new sizes. Try to shrink each window | |
2887 | proportional to its size. */ | |
2888 | for (i = 0; i < nchildren; ++i) | |
2889 | { | |
2890 | if (new_sizes[i] > min_size) | |
2891 | { | |
2892 | int to_shrink = total_shrink*new_sizes[i]/total; | |
2893 | if (new_sizes[i] - to_shrink < min_size) | |
2894 | to_shrink = new_sizes[i] - min_size; | |
2895 | new_sizes[i] -= to_shrink; | |
2896 | total_removed += to_shrink; | |
2897 | } | |
2898 | } | |
2899 | ||
2900 | /* Any reminder due to rounding, we just subtract from windows | |
2901 | that are left and still can be shrunk. */ | |
2902 | while (total_shrink > total_removed) | |
2903 | { | |
ef614e04 JD |
2904 | int nonzero_sizes = 0; |
2905 | int nonzero_idx = -1; | |
2906 | ||
2907 | for (i = 0; i < nchildren; ++i) | |
2908 | if (new_sizes[i] > 0) | |
2909 | { | |
2910 | ++nonzero_sizes; | |
2911 | nonzero_idx = i; | |
2912 | } | |
c49a0495 | 2913 | |
0aa513ed JD |
2914 | for (i = 0; i < nchildren; ++i) |
2915 | if (new_sizes[i] > min_size) | |
2916 | { | |
2917 | --new_sizes[i]; | |
2918 | ++total_removed; | |
2919 | ||
2920 | /* Out of for, just shrink one window at the time and | |
2921 | check again if we have enough space. */ | |
2922 | break; | |
2923 | } | |
ef614e04 JD |
2924 | |
2925 | ||
2926 | /* Special case, only one window left. */ | |
2927 | if (nonzero_sizes == 1) | |
2928 | break; | |
2929 | } | |
2930 | ||
2931 | /* Any surplus due to rounding, we add to windows that are left. */ | |
2932 | while (total_shrink < total_removed) | |
2933 | { | |
2934 | for (i = 0; i < nchildren; ++i) | |
2935 | { | |
2936 | if (new_sizes[i] != 0 && total_shrink < total_removed) | |
2937 | { | |
2938 | ++new_sizes[i]; | |
2939 | --total_removed; | |
2940 | break; | |
2941 | } | |
2942 | } | |
0aa513ed JD |
2943 | } |
2944 | ||
2945 | return new_sizes; | |
2946 | } | |
949cf20f | 2947 | |
233a4a2c GM |
2948 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set |
2949 | WINDOW's width. Resize WINDOW's children, if any, so that they | |
5fe0b054 RS |
2950 | keep their proportionate size relative to WINDOW. |
2951 | ||
2952 | If FIRST_ONLY is 1, change only the first of WINDOW's children when | |
2953 | they are in series. If LAST_ONLY is 1, change only the last of | |
2954 | WINDOW's children when they are in series. | |
2955 | ||
2956 | Propagate WINDOW's top or left edge position to children. Delete | |
2957 | windows that become too small unless NODELETE_P is non-zero. | |
192c3131 RS |
2958 | |
2959 | If NODELETE_P is 2, that means we do delete windows that are | |
2960 | too small, even if they were too small before! */ | |
233a4a2c GM |
2961 | |
2962 | static void | |
5fe0b054 | 2963 | size_window (window, size, width_p, nodelete_p, first_only, last_only) |
7ab12479 | 2964 | Lisp_Object window; |
233a4a2c | 2965 | int size, width_p, nodelete_p; |
5fe0b054 | 2966 | int first_only, last_only; |
7ab12479 | 2967 | { |
233a4a2c GM |
2968 | struct window *w = XWINDOW (window); |
2969 | struct window *c; | |
2970 | Lisp_Object child, *forward, *sideward; | |
949cf20f | 2971 | int old_size, min_size, safe_min_size; |
7ab12479 | 2972 | |
949cf20f KS |
2973 | /* We test nodelete_p != 2 and nodelete_p != 1 below, so it |
2974 | seems like it's too soon to do this here. ++KFS. */ | |
192c3131 RS |
2975 | if (nodelete_p == 2) |
2976 | nodelete_p = 0; | |
2977 | ||
a481b3ea | 2978 | check_min_window_sizes (); |
7ae2f10f | 2979 | size = max (0, size); |
177c0ea7 | 2980 | |
b5f05b50 GM |
2981 | /* If the window has been "too small" at one point, |
2982 | don't delete it for being "too small" in the future. | |
2983 | Preserve it as long as that is at all possible. */ | |
233a4a2c GM |
2984 | if (width_p) |
2985 | { | |
949cf20f | 2986 | old_size = WINDOW_TOTAL_COLS (w); |
233a4a2c | 2987 | min_size = window_min_width; |
949cf20f KS |
2988 | /* Ensure that there is room for the scroll bar and fringes! |
2989 | We may reduce display margins though. */ | |
2990 | safe_min_size = (MIN_SAFE_WINDOW_WIDTH | |
2991 | + WINDOW_FRINGE_COLS (w) | |
2992 | + WINDOW_SCROLL_BAR_COLS (w)); | |
233a4a2c GM |
2993 | } |
2994 | else | |
2995 | { | |
949cf20f | 2996 | old_size = XINT (w->total_lines); |
233a4a2c | 2997 | min_size = window_min_height; |
949cf20f | 2998 | safe_min_size = MIN_SAFE_WINDOW_HEIGHT; |
233a4a2c | 2999 | } |
192c3131 RS |
3000 | |
3001 | if (old_size < min_size && nodelete_p != 2) | |
b5f05b50 GM |
3002 | w->too_small_ok = Qt; |
3003 | ||
233a4a2c | 3004 | /* Maybe delete WINDOW if it's too small. */ |
192c3131 | 3005 | if (nodelete_p != 1 && !NILP (w->parent)) |
7ab12479 | 3006 | { |
b5f05b50 | 3007 | if (!MINI_WINDOW_P (w) && !NILP (w->too_small_ok)) |
233a4a2c | 3008 | min_size = width_p ? MIN_SAFE_WINDOW_WIDTH : MIN_SAFE_WINDOW_HEIGHT; |
949cf20f KS |
3009 | if (min_size < safe_min_size) |
3010 | min_size = safe_min_size; | |
233a4a2c | 3011 | if (size < min_size) |
c1636aa6 GM |
3012 | { |
3013 | delete_window (window); | |
3014 | return; | |
3015 | } | |
7ab12479 JB |
3016 | } |
3017 | ||
233a4a2c | 3018 | /* Set redisplay hints. */ |
7ae2f10f GM |
3019 | w->last_modified = make_number (0); |
3020 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 3021 | windows_or_buffers_changed++; |
7ae2f10f | 3022 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 3023 | |
233a4a2c GM |
3024 | if (width_p) |
3025 | { | |
3026 | sideward = &w->vchild; | |
3027 | forward = &w->hchild; | |
949cf20f KS |
3028 | w->total_cols = make_number (size); |
3029 | adjust_window_margins (w); | |
233a4a2c GM |
3030 | } |
3031 | else | |
3032 | { | |
3033 | sideward = &w->hchild; | |
3034 | forward = &w->vchild; | |
949cf20f KS |
3035 | w->total_lines = make_number (size); |
3036 | w->orig_total_lines = Qnil; | |
233a4a2c GM |
3037 | } |
3038 | ||
3039 | if (!NILP (*sideward)) | |
7ab12479 | 3040 | { |
5fe0b054 | 3041 | /* We have a chain of parallel siblings whose size should all change. */ |
233a4a2c | 3042 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 3043 | { |
233a4a2c GM |
3044 | c = XWINDOW (child); |
3045 | if (width_p) | |
949cf20f | 3046 | c->left_col = w->left_col; |
233a4a2c | 3047 | else |
949cf20f | 3048 | c->top_line = w->top_line; |
5fe0b054 RS |
3049 | size_window (child, size, width_p, nodelete_p, |
3050 | first_only, last_only); | |
7ab12479 JB |
3051 | } |
3052 | } | |
5fe0b054 RS |
3053 | else if (!NILP (*forward) && last_only) |
3054 | { | |
3055 | /* Change the last in a series of siblings. */ | |
3056 | Lisp_Object last_child; | |
3057 | int child_size; | |
3058 | ||
3059 | for (child = *forward; !NILP (child); child = c->next) | |
3060 | { | |
3061 | c = XWINDOW (child); | |
3062 | last_child = child; | |
3063 | } | |
3064 | ||
3065 | child_size = XINT (width_p ? c->total_cols : c->total_lines); | |
3066 | size_window (last_child, | |
3067 | size - old_size + child_size, | |
3068 | width_p, nodelete_p, first_only, last_only); | |
3069 | } | |
3070 | else if (!NILP (*forward) && first_only) | |
3071 | { | |
3072 | /* Change the first in a series of siblings. */ | |
3073 | int child_size; | |
3074 | ||
3075 | child = *forward; | |
3076 | c = XWINDOW (child); | |
3077 | ||
3078 | if (width_p) | |
3079 | c->left_col = w->left_col; | |
3080 | else | |
3081 | c->top_line = w->top_line; | |
3082 | ||
3083 | child_size = XINT (width_p ? c->total_cols : c->total_lines); | |
3084 | size_window (child, | |
3085 | size - old_size + child_size, | |
3086 | width_p, nodelete_p, first_only, last_only); | |
3087 | } | |
233a4a2c | 3088 | else if (!NILP (*forward)) |
7ab12479 | 3089 | { |
233a4a2c GM |
3090 | int fixed_size, each, extra, n; |
3091 | int resize_fixed_p, nfixed; | |
8b6d9dc9 | 3092 | int last_pos, first_pos, nchildren, total; |
0aa513ed | 3093 | int *new_sizes = NULL; |
233a4a2c | 3094 | |
5fe0b054 | 3095 | /* Determine the fixed-size portion of this window, and the |
233a4a2c | 3096 | number of child windows. */ |
8b6d9dc9 | 3097 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 3098 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 3099 | { |
8b6d9dc9 | 3100 | int child_size; |
177c0ea7 | 3101 | |
7ab12479 | 3102 | c = XWINDOW (child); |
949cf20f | 3103 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); |
8b6d9dc9 | 3104 | total += child_size; |
177c0ea7 | 3105 | |
233a4a2c GM |
3106 | if (window_fixed_size_p (c, width_p, 0)) |
3107 | { | |
8b6d9dc9 | 3108 | fixed_size += child_size; |
233a4a2c GM |
3109 | ++nfixed; |
3110 | } | |
3111 | } | |
7ab12479 | 3112 | |
233a4a2c GM |
3113 | /* If the new size is smaller than fixed_size, or if there |
3114 | aren't any resizable windows, allow resizing fixed-size | |
3115 | windows. */ | |
3116 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
3117 | ||
0aa513ed | 3118 | /* Compute how many lines/columns to add/remove to each child. The |
233a4a2c GM |
3119 | value of extra takes care of rounding errors. */ |
3120 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
0aa513ed JD |
3121 | if (size < total && n > 1) |
3122 | new_sizes = shrink_windows (total, size, nchildren, n, min_size, | |
3123 | resize_fixed_p, *forward, width_p); | |
3124 | else | |
3125 | { | |
3126 | each = (size - total) / n; | |
3127 | extra = (size - total) - n * each; | |
3128 | } | |
233a4a2c GM |
3129 | |
3130 | /* Compute new children heights and edge positions. */ | |
949cf20f | 3131 | first_pos = width_p ? XINT (w->left_col) : XINT (w->top_line); |
233a4a2c | 3132 | last_pos = first_pos; |
0aa513ed | 3133 | for (n = 0, child = *forward; !NILP (child); child = c->next, ++n) |
233a4a2c GM |
3134 | { |
3135 | int new_size, old_size; | |
177c0ea7 | 3136 | |
233a4a2c | 3137 | c = XWINDOW (child); |
949cf20f | 3138 | old_size = width_p ? XFASTINT (c->total_cols) : XFASTINT (c->total_lines); |
233a4a2c | 3139 | new_size = old_size; |
7ab12479 | 3140 | |
233a4a2c GM |
3141 | /* The top or left edge position of this child equals the |
3142 | bottom or right edge of its predecessor. */ | |
3143 | if (width_p) | |
949cf20f | 3144 | c->left_col = make_number (last_pos); |
233a4a2c | 3145 | else |
949cf20f | 3146 | c->top_line = make_number (last_pos); |
7ab12479 | 3147 | |
233a4a2c GM |
3148 | /* If this child can be resized, do it. */ |
3149 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
3150 | { | |
0aa513ed | 3151 | new_size = new_sizes ? new_sizes[n] : old_size + each + extra; |
233a4a2c GM |
3152 | extra = 0; |
3153 | } | |
177c0ea7 | 3154 | |
233a4a2c GM |
3155 | /* Set new height. Note that size_window also propagates |
3156 | edge positions to children, so it's not a no-op if we | |
3157 | didn't change the child's size. */ | |
5fe0b054 | 3158 | size_window (child, new_size, width_p, 1, first_only, last_only); |
233a4a2c GM |
3159 | |
3160 | /* Remember the bottom/right edge position of this child; it | |
3161 | will be used to set the top/left edge of the next child. */ | |
0aa513ed | 3162 | last_pos += new_size; |
7ab12479 | 3163 | } |
233a4a2c | 3164 | |
0aa513ed JD |
3165 | if (new_sizes) xfree (new_sizes); |
3166 | ||
233a4a2c GM |
3167 | /* We should have covered the parent exactly with child windows. */ |
3168 | xassert (size == last_pos - first_pos); | |
177c0ea7 | 3169 | |
7ab12479 | 3170 | /* Now delete any children that became too small. */ |
233a4a2c GM |
3171 | if (!nodelete_p) |
3172 | for (child = *forward; !NILP (child); child = c->next) | |
7ab12479 | 3173 | { |
233a4a2c GM |
3174 | int child_size; |
3175 | c = XWINDOW (child); | |
949cf20f | 3176 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); |
5fe0b054 | 3177 | size_window (child, child_size, width_p, 2, first_only, last_only); |
7ab12479 JB |
3178 | } |
3179 | } | |
3180 | } | |
3181 | ||
233a4a2c GM |
3182 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
3183 | WINDOW's children. NODELETE non-zero means don't delete windows | |
3184 | that become too small in the process. (The caller should check | |
3185 | later and do so if appropriate.) */ | |
7ab12479 | 3186 | |
5e14b1fc | 3187 | void |
233a4a2c | 3188 | set_window_height (window, height, nodelete) |
7ab12479 | 3189 | Lisp_Object window; |
233a4a2c | 3190 | int height; |
7ab12479 JB |
3191 | int nodelete; |
3192 | { | |
5fe0b054 | 3193 | size_window (window, height, 0, nodelete, 0, 0); |
233a4a2c | 3194 | } |
7ab12479 | 3195 | |
7ab12479 | 3196 | |
233a4a2c GM |
3197 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
3198 | WINDOW's children. NODELETE non-zero means don't delete windows | |
3199 | that become too small in the process. (The caller should check | |
3200 | later and do so if appropriate.) */ | |
7ab12479 | 3201 | |
233a4a2c GM |
3202 | void |
3203 | set_window_width (window, width, nodelete) | |
3204 | Lisp_Object window; | |
3205 | int width; | |
3206 | int nodelete; | |
3207 | { | |
5fe0b054 | 3208 | size_window (window, width, 1, nodelete, 0, 0); |
7ab12479 | 3209 | } |
233a4a2c | 3210 | |
cdbc7fec KS |
3211 | /* Change window heights in windows rooted in WINDOW by N lines. */ |
3212 | ||
3213 | void | |
3214 | change_window_heights (window, n) | |
3215 | Lisp_Object window; | |
3216 | int n; | |
3217 | { | |
3218 | struct window *w = XWINDOW (window); | |
3219 | ||
949cf20f KS |
3220 | XSETFASTINT (w->top_line, XFASTINT (w->top_line) + n); |
3221 | XSETFASTINT (w->total_lines, XFASTINT (w->total_lines) - n); | |
cdbc7fec | 3222 | |
949cf20f KS |
3223 | if (INTEGERP (w->orig_top_line)) |
3224 | XSETFASTINT (w->orig_top_line, XFASTINT (w->orig_top_line) + n); | |
3225 | if (INTEGERP (w->orig_total_lines)) | |
3226 | XSETFASTINT (w->orig_total_lines, XFASTINT (w->orig_total_lines) - n); | |
cdbc7fec KS |
3227 | |
3228 | /* Handle just the top child in a vertical split. */ | |
3229 | if (!NILP (w->vchild)) | |
3230 | change_window_heights (w->vchild, n); | |
3231 | ||
3232 | /* Adjust all children in a horizontal split. */ | |
3233 | for (window = w->hchild; !NILP (window); window = w->next) | |
3234 | { | |
3235 | w = XWINDOW (window); | |
3236 | change_window_heights (window, n); | |
3237 | } | |
3238 | } | |
3239 | ||
7ab12479 | 3240 | \f |
1d8d96fa | 3241 | int window_select_count; |
7ab12479 | 3242 | |
5b03d3c0 RS |
3243 | Lisp_Object |
3244 | Fset_window_buffer_unwind (obuf) | |
3245 | Lisp_Object obuf; | |
3246 | { | |
3247 | Fset_buffer (obuf); | |
3248 | return Qnil; | |
3249 | } | |
3250 | ||
56613f06 SM |
3251 | EXFUN (Fset_window_fringes, 4); |
3252 | EXFUN (Fset_window_scroll_bars, 4); | |
7ab12479 | 3253 | |
5500c422 GM |
3254 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3255 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3256 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3257 | margins, fringes, and scroll-bar settings of the window are not | |
3258 | reset from the buffer's local settings. */ | |
7ab12479 | 3259 | |
5500c422 | 3260 | void |
949cf20f | 3261 | set_window_buffer (window, buffer, run_hooks_p, keep_margins_p) |
5500c422 | 3262 | Lisp_Object window, buffer; |
949cf20f | 3263 | int run_hooks_p, keep_margins_p; |
5500c422 GM |
3264 | { |
3265 | struct window *w = XWINDOW (window); | |
3266 | struct buffer *b = XBUFFER (buffer); | |
aed13378 | 3267 | int count = SPECPDL_INDEX (); |
7ab12479 JB |
3268 | |
3269 | w->buffer = buffer; | |
86e48436 RS |
3270 | |
3271 | if (EQ (window, selected_window)) | |
5500c422 | 3272 | b->last_selected_window = window; |
beb4e312 | 3273 | |
c49a0495 KS |
3274 | /* Let redisplay errors through. */ |
3275 | b->display_error_modiff = 0; | |
3276 | ||
beb4e312 | 3277 | /* Update time stamps of buffer display. */ |
5500c422 GM |
3278 | if (INTEGERP (b->display_count)) |
3279 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
3280 | b->display_time = Fcurrent_time (); | |
86e48436 | 3281 | |
d834a2e9 | 3282 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 GM |
3283 | XSETFASTINT (w->window_end_vpos, 0); |
3284 | bzero (&w->last_cursor, sizeof w->last_cursor); | |
5a41ab94 | 3285 | w->window_end_valid = Qnil; |
1c686c99 | 3286 | w->hscroll = w->min_hscroll = make_number (0); |
224227d1 | 3287 | w->vscroll = 0; |
5500c422 | 3288 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
7ab12479 | 3289 | set_marker_restricted (w->start, |
5500c422 | 3290 | make_number (b->last_window_start), |
7ab12479 JB |
3291 | buffer); |
3292 | w->start_at_line_beg = Qnil; | |
e36ab06b | 3293 | w->force_start = Qnil; |
d834a2e9 | 3294 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 3295 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 3296 | windows_or_buffers_changed++; |
5b03d3c0 RS |
3297 | |
3298 | /* We must select BUFFER for running the window-scroll-functions. | |
3299 | If WINDOW is selected, switch permanently. | |
3300 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
3301 | if (EQ (window, selected_window)) |
3302 | Fset_buffer (buffer); | |
5b03d3c0 RS |
3303 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3304 | because that might itself be a local variable. */ | |
3305 | else if (window_initialized) | |
3306 | { | |
3307 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
3308 | Fset_buffer (buffer); | |
3309 | } | |
3310 | ||
949cf20f KS |
3311 | if (!keep_margins_p) |
3312 | { | |
3313 | /* Set left and right marginal area width etc. from buffer. */ | |
3314 | ||
79fd290e | 3315 | /* This may call adjust_window_margins three times, so |
949cf20f | 3316 | temporarily disable window margins. */ |
3834380d KS |
3317 | Lisp_Object save_left = w->left_margin_cols; |
3318 | Lisp_Object save_right = w->right_margin_cols; | |
3319 | ||
949cf20f KS |
3320 | w->left_margin_cols = w->right_margin_cols = Qnil; |
3321 | ||
3322 | Fset_window_fringes (window, | |
3323 | b->left_fringe_width, b->right_fringe_width, | |
3324 | b->fringes_outside_margins); | |
3325 | ||
3326 | Fset_window_scroll_bars (window, | |
3327 | b->scroll_bar_width, | |
3328 | b->vertical_scroll_bar_type, Qnil); | |
3329 | ||
3834380d KS |
3330 | w->left_margin_cols = save_left; |
3331 | w->right_margin_cols = save_right; | |
3332 | ||
949cf20f KS |
3333 | Fset_window_margins (window, |
3334 | b->left_margin_cols, b->right_margin_cols); | |
3335 | } | |
7ab12479 | 3336 | |
5500c422 GM |
3337 | if (run_hooks_p) |
3338 | { | |
3339 | if (! NILP (Vwindow_scroll_functions)) | |
3340 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
3341 | Fmarker_position (w->start)); | |
3342 | ||
3343 | if (! NILP (Vwindow_configuration_change_hook) | |
3344 | && ! NILP (Vrun_hooks)) | |
3345 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3346 | } | |
543f5fb1 | 3347 | |
5b03d3c0 | 3348 | unbind_to (count, Qnil); |
5500c422 | 3349 | } |
5b03d3c0 | 3350 | |
5500c422 | 3351 | |
949cf20f | 3352 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
fdb82f93 | 3353 | doc: /* Make WINDOW display BUFFER as its contents. |
c2755926 | 3354 | BUFFER can be a buffer or the name of an existing buffer. |
ab80314b | 3355 | Optional third arg KEEP-MARGINS non-nil means that WINDOW's current |
949cf20f KS |
3356 | display margins, fringe widths, and scroll bar settings are maintained; |
3357 | the default is to reset these from BUFFER's local settings or the frame | |
6cb4a892 RS |
3358 | defaults. |
3359 | ||
3360 | This function runs the hook `window-scroll-functions'. */) | |
949cf20f | 3361 | (window, buffer, keep_margins) |
56613f06 | 3362 | register Lisp_Object window, buffer, keep_margins; |
5500c422 GM |
3363 | { |
3364 | register Lisp_Object tem; | |
3365 | register struct window *w = decode_window (window); | |
5500c422 | 3366 | |
bed0c171 | 3367 | XSETWINDOW (window, w); |
5500c422 | 3368 | buffer = Fget_buffer (buffer); |
b7826503 | 3369 | CHECK_BUFFER (buffer); |
5500c422 GM |
3370 | |
3371 | if (NILP (XBUFFER (buffer)->name)) | |
3372 | error ("Attempt to display deleted buffer"); | |
3373 | ||
3374 | tem = w->buffer; | |
3375 | if (NILP (tem)) | |
3376 | error ("Window is deleted"); | |
3377 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
3378 | is first being set up. */ | |
3379 | { | |
3380 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) | |
3381 | error ("Window is dedicated to `%s'", | |
d5db4077 | 3382 | SDATA (XBUFFER (tem)->name)); |
5500c422 GM |
3383 | |
3384 | unshow_buffer (w); | |
3385 | } | |
3386 | ||
949cf20f | 3387 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 JB |
3388 | return Qnil; |
3389 | } | |
3390 | ||
2d0834cc SM |
3391 | /* Note that selected_window can be nil |
3392 | when this is called from Fset_window_configuration. */ | |
3393 | ||
14d87dc9 | 3394 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, |
fdb82f93 | 3395 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. |
e963215c | 3396 | If WINDOW is not already selected, make WINDOW's buffer current |
c2755926 | 3397 | and make WINDOW the frame's selected window. Return WINDOW. |
14d87dc9 SM |
3398 | Optional second arg NORECORD non-nil means |
3399 | do not put this buffer at the front of the list of recently selected ones. | |
282f7831 | 3400 | |
fdb82f93 PJ |
3401 | Note that the main editor command loop |
3402 | selects the buffer of the selected window before each command. */) | |
14d87dc9 SM |
3403 | (window, norecord) |
3404 | register Lisp_Object window, norecord; | |
7ab12479 JB |
3405 | { |
3406 | register struct window *w; | |
719eaeb1 | 3407 | register struct window *ow; |
1ae1a37d | 3408 | struct frame *sf; |
7ab12479 | 3409 | |
b7826503 | 3410 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3411 | |
3412 | w = XWINDOW (window); | |
50e88778 | 3413 | w->frozen_window_start_p = 0; |
7ab12479 | 3414 | |
2a1893f4 SM |
3415 | ++window_select_count; |
3416 | XSETFASTINT (w->use_time, window_select_count); | |
7ab12479 JB |
3417 | if (EQ (window, selected_window)) |
3418 | return window; | |
3419 | ||
a46c0153 RS |
3420 | /* Store the current buffer's actual point into the |
3421 | old selected window. It belongs to that window, | |
3422 | and when the window is not selected, must be in the window. */ | |
719eaeb1 GM |
3423 | if (!NILP (selected_window)) |
3424 | { | |
3425 | ow = XWINDOW (selected_window); | |
3426 | if (! NILP (ow->buffer)) | |
3427 | set_marker_both (ow->pointm, ow->buffer, | |
3428 | BUF_PT (XBUFFER (ow->buffer)), | |
3429 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
3430 | } | |
7ab12479 JB |
3431 | |
3432 | selected_window = window; | |
1ae1a37d | 3433 | sf = SELECTED_FRAME (); |
d1755117 RS |
3434 | if (XFRAME (WINDOW_FRAME (w)) != sf) |
3435 | { | |
3436 | XFRAME (WINDOW_FRAME (w))->selected_window = window; | |
3437 | /* Use this rather than Fhandle_switch_frame | |
3438 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
3439 | move around in the state where a minibuffer in a separate | |
3440 | frame is active. */ | |
c869384d | 3441 | Fselect_frame (WINDOW_FRAME (w)); |
d1755117 RS |
3442 | } |
3443 | else | |
1ae1a37d | 3444 | sf->selected_window = window; |
7ab12479 | 3445 | |
14d87dc9 | 3446 | if (NILP (norecord)) |
b7354ddf | 3447 | record_buffer (w->buffer); |
7ab12479 JB |
3448 | Fset_buffer (w->buffer); |
3449 | ||
86e48436 RS |
3450 | XBUFFER (w->buffer)->last_selected_window = window; |
3451 | ||
7ab12479 JB |
3452 | /* Go to the point recorded in the window. |
3453 | This is important when the buffer is in more | |
3454 | than one window. It also matters when | |
3455 | redisplay_window has altered point after scrolling, | |
3456 | because it makes the change only in the window. */ | |
3457 | { | |
3458 | register int new_point = marker_position (w->pointm); | |
3459 | if (new_point < BEGV) | |
3460 | SET_PT (BEGV); | |
a9c95e08 | 3461 | else if (new_point > ZV) |
7ab12479 JB |
3462 | SET_PT (ZV); |
3463 | else | |
3464 | SET_PT (new_point); | |
3465 | } | |
3466 | ||
3467 | windows_or_buffers_changed++; | |
3468 | return window; | |
3469 | } | |
14d87dc9 SM |
3470 | |
3471 | static Lisp_Object | |
3472 | select_window_norecord (window) | |
3473 | Lisp_Object window; | |
3474 | { | |
3475 | return Fselect_window (window, Qt); | |
3476 | } | |
b7354ddf | 3477 | \f |
441a127e RS |
3478 | /* Deiconify the frame containing the window WINDOW, |
3479 | unless it is the selected frame; | |
3480 | then return WINDOW. | |
3481 | ||
3482 | The reason for the exception for the selected frame | |
3483 | is that it seems better not to change the selected frames visibility | |
3484 | merely because of displaying a different buffer in it. | |
3485 | The deiconification is useful when a buffer gets shown in | |
3486 | another frame that you were not using lately. */ | |
d07f802a RS |
3487 | |
3488 | static Lisp_Object | |
3489 | display_buffer_1 (window) | |
3490 | Lisp_Object window; | |
3491 | { | |
1ae1a37d GM |
3492 | Lisp_Object frame = XWINDOW (window)->frame; |
3493 | FRAME_PTR f = XFRAME (frame); | |
177c0ea7 | 3494 | |
d07f802a | 3495 | FRAME_SAMPLE_VISIBILITY (f); |
177c0ea7 | 3496 | |
2d0834cc SM |
3497 | if (EQ (frame, selected_frame)) |
3498 | ; /* Assume the selected frame is already visible enough. */ | |
3499 | else if (minibuf_level > 0 | |
3500 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
3501 | && WINDOW_LIVE_P (minibuf_selected_window) | |
3502 | && EQ (frame, WINDOW_FRAME (XWINDOW (minibuf_selected_window)))) | |
3503 | ; /* Assume the frame from which we invoked the minibuffer is visible. */ | |
3504 | else | |
60117126 RS |
3505 | { |
3506 | if (FRAME_ICONIFIED_P (f)) | |
1ae1a37d | 3507 | Fmake_frame_visible (frame); |
37962e60 | 3508 | else if (FRAME_VISIBLE_P (f)) |
1ae1a37d | 3509 | Fraise_frame (frame); |
60117126 | 3510 | } |
177c0ea7 | 3511 | |
d07f802a RS |
3512 | return window; |
3513 | } | |
3514 | ||
4628f7a4 | 3515 | DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, |
d99b4859 | 3516 | doc: /* Returns non-nil if a buffer named BUFFER-NAME gets a special frame. |
c019856e RS |
3517 | If the value is t, `display-buffer' or `pop-to-buffer' would create a |
3518 | special frame for that buffer using the default frame parameters. | |
3519 | ||
3520 | If the value is a list, it is a list of frame parameters that would be used | |
d99b4859 RS |
3521 | to make a frame for that buffer. |
3522 | The variables `special-display-buffer-names' | |
3523 | and `special-display-regexps' control this. */) | |
fdb82f93 | 3524 | (buffer_name) |
4628f7a4 EN |
3525 | Lisp_Object buffer_name; |
3526 | { | |
3527 | Lisp_Object tem; | |
3528 | ||
b7826503 | 3529 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
3530 | |
3531 | tem = Fmember (buffer_name, Vspecial_display_buffer_names); | |
3532 | if (!NILP (tem)) | |
3533 | return Qt; | |
3534 | ||
3535 | tem = Fassoc (buffer_name, Vspecial_display_buffer_names); | |
3536 | if (!NILP (tem)) | |
3537 | return XCDR (tem); | |
3538 | ||
3539 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) | |
3540 | { | |
3541 | Lisp_Object car = XCAR (tem); | |
3542 | if (STRINGP (car) | |
3543 | && fast_string_match (car, buffer_name) >= 0) | |
3544 | return Qt; | |
3545 | else if (CONSP (car) | |
3546 | && STRINGP (XCAR (car)) | |
3547 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
0057b00a | 3548 | return XCDR (car); |
4628f7a4 EN |
3549 | } |
3550 | return Qnil; | |
177c0ea7 | 3551 | } |
4628f7a4 EN |
3552 | |
3553 | DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, | |
c019856e RS |
3554 | doc: /* Returns non-nil if a buffer named BUFFER-NAME would use the same window. |
3555 | More precisely, if `display-buffer' or `pop-to-buffer' would display | |
3556 | that buffer in the selected window rather than (as usual) in some other window. | |
fdb82f93 PJ |
3557 | See `same-window-buffer-names' and `same-window-regexps'. */) |
3558 | (buffer_name) | |
4628f7a4 EN |
3559 | Lisp_Object buffer_name; |
3560 | { | |
3561 | Lisp_Object tem; | |
3562 | ||
b7826503 | 3563 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
3564 | |
3565 | tem = Fmember (buffer_name, Vsame_window_buffer_names); | |
3566 | if (!NILP (tem)) | |
3567 | return Qt; | |
3568 | ||
3569 | tem = Fassoc (buffer_name, Vsame_window_buffer_names); | |
3570 | if (!NILP (tem)) | |
3571 | return Qt; | |
3572 | ||
3573 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) | |
3574 | { | |
3575 | Lisp_Object car = XCAR (tem); | |
3576 | if (STRINGP (car) | |
3577 | && fast_string_match (car, buffer_name) >= 0) | |
3578 | return Qt; | |
3579 | else if (CONSP (car) | |
3580 | && STRINGP (XCAR (car)) | |
3581 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
3582 | return Qt; | |
3583 | } | |
3584 | return Qnil; | |
3585 | } | |
3586 | ||
fdb82f93 | 3587 | /* Use B so the default is (other-buffer). */ |
53f76081 | 3588 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 3, |
fdb82f93 PJ |
3589 | "BDisplay buffer: \nP", |
3590 | doc: /* Make BUFFER appear in some window but don't select it. | |
c2755926 LT |
3591 | BUFFER must be the name of an existing buffer, or, when called from Lisp, |
3592 | a buffer. | |
fdb82f93 PJ |
3593 | If BUFFER is shown already in some window, just use that one, |
3594 | unless the window is the selected window and the optional second | |
3595 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg). | |
3596 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER. | |
3597 | Returns the window displaying BUFFER. | |
079d288f | 3598 | If `display-buffer-reuse-frames' is non-nil, and another frame is currently |
fdb82f93 PJ |
3599 | displaying BUFFER, then simply raise that frame. |
3600 | ||
9a7e95f3 RS |
3601 | The variables `special-display-buffer-names', |
3602 | `special-display-regexps', `same-window-buffer-names', and | |
3603 | `same-window-regexps' customize how certain buffer names are handled. | |
9297079e | 3604 | The latter two take effect only if NOT-THIS-WINDOW is nil. |
fdb82f93 PJ |
3605 | |
3606 | If optional argument FRAME is `visible', search all visible frames. | |
3607 | If FRAME is 0, search all visible and iconified frames. | |
3608 | If FRAME is t, search all frames. | |
3609 | If FRAME is a frame, search only that frame. | |
3610 | If FRAME is nil, search only the selected frame | |
3611 | (actually the last nonminibuffer frame), | |
3612 | unless `pop-up-frames' or `display-buffer-reuse-frames' is non-nil, | |
3613 | which means search visible and iconified frames. | |
3614 | ||
876e2665 GM |
3615 | If a full-width window on a splittable frame is available to display |
3616 | the buffer, it may be split, subject to the value of the variable | |
3617 | `split-height-threshold'. | |
3618 | ||
fdb82f93 PJ |
3619 | If `even-window-heights' is non-nil, window heights will be evened out |
3620 | if displaying the buffer causes two vertically adjacent windows to be | |
3621 | displayed. */) | |
3622 | (buffer, not_this_window, frame) | |
53f76081 | 3623 | register Lisp_Object buffer, not_this_window, frame; |
7ab12479 | 3624 | { |
aee631c2 | 3625 | register Lisp_Object window, tem, swp; |
1ae1a37d | 3626 | struct frame *f; |
7ab12479 | 3627 | |
aee631c2 | 3628 | swp = Qnil; |
7ab12479 | 3629 | buffer = Fget_buffer (buffer); |
b7826503 | 3630 | CHECK_BUFFER (buffer); |
7ab12479 | 3631 | |
265a9e55 | 3632 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
3633 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
3634 | ||
265a9e55 | 3635 | if (NILP (not_this_window) |
7ab12479 | 3636 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 3637 | return display_buffer_1 (selected_window); |
7ab12479 | 3638 | |
855d8627 RS |
3639 | /* See if the user has specified this buffer should appear |
3640 | in the selected window. */ | |
3641 | if (NILP (not_this_window)) | |
3642 | { | |
aee631c2 RS |
3643 | swp = Fsame_window_p (XBUFFER (buffer)->name); |
3644 | if (!NILP (swp) && !no_switch_window (selected_window)) | |
c63dc4a2 RS |
3645 | { |
3646 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 3647 | return display_buffer_1 (selected_window); |
c63dc4a2 | 3648 | } |
855d8627 RS |
3649 | } |
3650 | ||
079d288f | 3651 | /* If the user wants pop-up-frames or display-buffer-reuse-frames, |
73dc5198 KH |
3652 | look for a window showing BUFFER on any visible or iconified frame. |
3653 | Otherwise search only the current frame. */ | |
53f76081 RS |
3654 | if (! NILP (frame)) |
3655 | tem = frame; | |
9c3da604 GM |
3656 | else if (pop_up_frames |
3657 | || display_buffer_reuse_frames | |
3658 | || last_nonminibuf_frame == 0) | |
73dc5198 KH |
3659 | XSETFASTINT (tem, 0); |
3660 | else | |
73dc5198 | 3661 | XSETFRAME (tem, last_nonminibuf_frame); |
177c0ea7 | 3662 | |
73dc5198 | 3663 | window = Fget_buffer_window (buffer, tem); |
265a9e55 JB |
3664 | if (!NILP (window) |
3665 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
9c3da604 | 3666 | return display_buffer_1 (window); |
7ab12479 | 3667 | |
a90712c2 | 3668 | /* Certain buffer names get special handling. */ |
aee631c2 | 3669 | if (!NILP (Vspecial_display_function) && NILP (swp)) |
a90712c2 | 3670 | { |
4628f7a4 EN |
3671 | tem = Fspecial_display_p (XBUFFER (buffer)->name); |
3672 | if (EQ (tem, Qt)) | |
a90712c2 | 3673 | return call1 (Vspecial_display_function, buffer); |
4628f7a4 EN |
3674 | if (CONSP (tem)) |
3675 | return call2 (Vspecial_display_function, buffer, tem); | |
a90712c2 RS |
3676 | } |
3677 | ||
44fa5b1e JB |
3678 | /* If there are no frames open that have more than a minibuffer, |
3679 | we need to create a new frame. */ | |
3680 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 3681 | { |
a90712c2 | 3682 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
949cf20f | 3683 | Fset_window_buffer (window, buffer, Qnil); |
d07f802a | 3684 | return display_buffer_1 (window); |
7ab12479 | 3685 | } |
7ab12479 | 3686 | |
1ae1a37d | 3687 | f = SELECTED_FRAME (); |
43bad991 | 3688 | if (pop_up_windows |
1ae1a37d | 3689 | || FRAME_MINIBUF_ONLY_P (f) |
cee67da9 RS |
3690 | /* If the current frame is a special display frame, |
3691 | don't try to reuse its windows. */ | |
1ae1a37d | 3692 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f))->dedicated)) |
7ab12479 | 3693 | { |
12cae7c0 KH |
3694 | Lisp_Object frames; |
3695 | ||
37962e60 | 3696 | frames = Qnil; |
1ae1a37d | 3697 | if (FRAME_MINIBUF_ONLY_P (f)) |
74112613 | 3698 | XSETFRAME (frames, last_nonminibuf_frame); |
a5731348 | 3699 | /* Don't try to create a window if we would get an error. */ |
7ab12479 JB |
3700 | if (split_height_threshold < window_min_height << 1) |
3701 | split_height_threshold = window_min_height << 1; | |
3702 | ||
cee67da9 RS |
3703 | /* Note that both Fget_largest_window and Fget_lru_window |
3704 | ignore minibuffers and dedicated windows. | |
3705 | This means they can return nil. */ | |
7ab12479 | 3706 | |
cee67da9 RS |
3707 | /* If the frame we would try to split cannot be split, |
3708 | try other frames. */ | |
1ae1a37d | 3709 | if (FRAME_NO_SPLIT_P (NILP (frames) ? f : last_nonminibuf_frame)) |
cee67da9 RS |
3710 | { |
3711 | /* Try visible frames first. */ | |
3cbb13c8 | 3712 | window = Fget_largest_window (Qvisible, Qt); |
cee67da9 RS |
3713 | /* If that didn't work, try iconified frames. */ |
3714 | if (NILP (window)) | |
3cbb13c8 SM |
3715 | window = Fget_largest_window (make_number (0), Qt); |
3716 | #if 0 /* Don't try windows on other displays. */ | |
cee67da9 | 3717 | if (NILP (window)) |
3cbb13c8 SM |
3718 | window = Fget_largest_window (Qt, Qt); |
3719 | #endif | |
cee67da9 RS |
3720 | } |
3721 | else | |
3cbb13c8 | 3722 | window = Fget_largest_window (frames, Qt); |
cee67da9 | 3723 | |
92cca945 RS |
3724 | /* If we got a tall enough full-width window that can be split, |
3725 | split it. */ | |
265a9e55 | 3726 | if (!NILP (window) |
92cca945 | 3727 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ab12479 | 3728 | && window_height (window) >= split_height_threshold |
111e5992 | 3729 | && WINDOW_FULL_WIDTH_P (XWINDOW (window))) |
7ab12479 JB |
3730 | window = Fsplit_window (window, Qnil, Qnil); |
3731 | else | |
3732 | { | |
1942f68f RS |
3733 | Lisp_Object upper, lower, other; |
3734 | ||
3cbb13c8 | 3735 | window = Fget_lru_window (frames, Qt); |
92cca945 RS |
3736 | /* If the LRU window is selected, and big enough, |
3737 | and can be split, split it. */ | |
cee67da9 | 3738 | if (!NILP (window) |
92cca945 | 3739 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
cee67da9 RS |
3740 | && (EQ (window, selected_window) |
3741 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
3742 | && window_height (window) >= window_min_height << 1) |
3743 | window = Fsplit_window (window, Qnil, Qnil); | |
49e99345 SM |
3744 | else |
3745 | window = Fget_lru_window (frames, Qnil); | |
cee67da9 | 3746 | /* If Fget_lru_window returned nil, try other approaches. */ |
48d9379d | 3747 | |
cee67da9 | 3748 | /* Try visible frames first. */ |
48d9379d RS |
3749 | if (NILP (window)) |
3750 | window = Fget_buffer_window (buffer, Qvisible); | |
cee67da9 | 3751 | if (NILP (window)) |
3cbb13c8 | 3752 | window = Fget_largest_window (Qvisible, Qnil); |
cee67da9 | 3753 | /* If that didn't work, try iconified frames. */ |
48d9379d RS |
3754 | if (NILP (window)) |
3755 | window = Fget_buffer_window (buffer, make_number (0)); | |
cee67da9 | 3756 | if (NILP (window)) |
3cbb13c8 SM |
3757 | window = Fget_largest_window (make_number (0), Qnil); |
3758 | ||
3759 | #if 0 /* Don't try frames on other displays. */ | |
48d9379d RS |
3760 | if (NILP (window)) |
3761 | window = Fget_buffer_window (buffer, Qt); | |
cee67da9 | 3762 | if (NILP (window)) |
3cbb13c8 SM |
3763 | window = Fget_largest_window (Qt, Qnil); |
3764 | #endif | |
cee67da9 RS |
3765 | /* As a last resort, make a new frame. */ |
3766 | if (NILP (window)) | |
3767 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
3768 | /* If window appears above or below another, |
3769 | even out their heights. */ | |
cac66e4f | 3770 | other = upper = lower = Qnil; |
1942f68f RS |
3771 | if (!NILP (XWINDOW (window)->prev)) |
3772 | other = upper = XWINDOW (window)->prev, lower = window; | |
3773 | if (!NILP (XWINDOW (window)->next)) | |
3774 | other = lower = XWINDOW (window)->next, upper = window; | |
3775 | if (!NILP (other) | |
6529ed87 | 3776 | && !NILP (Veven_window_heights) |
1942f68f | 3777 | /* Check that OTHER and WINDOW are vertically arrayed. */ |
949cf20f KS |
3778 | && !EQ (XWINDOW (other)->top_line, XWINDOW (window)->top_line) |
3779 | && (XFASTINT (XWINDOW (other)->total_lines) | |
3780 | > XFASTINT (XWINDOW (window)->total_lines))) | |
1942f68f | 3781 | { |
949cf20f KS |
3782 | int total = (XFASTINT (XWINDOW (other)->total_lines) |
3783 | + XFASTINT (XWINDOW (window)->total_lines)); | |
86c8e823 | 3784 | enlarge_window (upper, |
949cf20f | 3785 | total / 2 - XFASTINT (XWINDOW (upper)->total_lines), |
56ebfae2 | 3786 | 0); |
1942f68f | 3787 | } |
7ab12479 JB |
3788 | } |
3789 | } | |
3790 | else | |
3cbb13c8 | 3791 | window = Fget_lru_window (Qnil, Qnil); |
7ab12479 | 3792 | |
949cf20f | 3793 | Fset_window_buffer (window, buffer, Qnil); |
d07f802a | 3794 | return display_buffer_1 (window); |
7ab12479 JB |
3795 | } |
3796 | ||
e661376d KS |
3797 | |
3798 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, | |
3799 | 0, 1, 0, | |
5a1048a5 | 3800 | doc: /* Force all windows to be updated on next redisplay. |
e661376d | 3801 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3802 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
e661376d KS |
3803 | displaying that buffer. */) |
3804 | (object) | |
3805 | Lisp_Object object; | |
3806 | { | |
3807 | if (NILP (object)) | |
3808 | { | |
3809 | windows_or_buffers_changed++; | |
40c6ee74 | 3810 | update_mode_lines++; |
e661376d KS |
3811 | return Qt; |
3812 | } | |
3813 | ||
3814 | if (WINDOWP (object)) | |
3815 | { | |
40c6ee74 | 3816 | struct window *w = XWINDOW (object); |
e661376d | 3817 | mark_window_display_accurate (object, 0); |
40c6ee74 KS |
3818 | w->update_mode_line = Qt; |
3819 | if (BUFFERP (w->buffer)) | |
3820 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
3821 | ++update_mode_lines; | |
e661376d KS |
3822 | return Qt; |
3823 | } | |
0cc1039f | 3824 | |
e661376d KS |
3825 | if (STRINGP (object)) |
3826 | object = Fget_buffer (object); | |
3827 | if (BUFFERP (object) && !NILP (XBUFFER (object)->name)) | |
3828 | { | |
3829 | /* Walk all windows looking for buffer, and force update | |
3830 | of each of those windows. */ | |
3831 | ||
3832 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); | |
3833 | return NILP (object) ? Qnil : Qt; | |
3834 | } | |
3835 | ||
3836 | /* If nothing suitable was found, just return. | |
3837 | We could signal an error, but this feature will typically be used | |
3838 | asynchronously in timers or process sentinels, so we don't. */ | |
3839 | return Qnil; | |
3840 | } | |
3841 | ||
3842 | ||
7ab12479 JB |
3843 | void |
3844 | temp_output_buffer_show (buf) | |
3845 | register Lisp_Object buf; | |
3846 | { | |
3847 | register struct buffer *old = current_buffer; | |
3848 | register Lisp_Object window; | |
3849 | register struct window *w; | |
3850 | ||
bccd3dd1 RS |
3851 | XBUFFER (buf)->directory = current_buffer->directory; |
3852 | ||
7ab12479 | 3853 | Fset_buffer (buf); |
c6367666 | 3854 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3855 | BEGV = BEG; |
3856 | ZV = Z; | |
3857 | SET_PT (BEG); | |
06be4f85 | 3858 | #if 0 /* rms: there should be no reason for this. */ |
b1599b4c | 3859 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
06be4f85 | 3860 | #endif |
7ab12479 JB |
3861 | set_buffer_internal (old); |
3862 | ||
e67a1dea | 3863 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3864 | call1 (Vtemp_buffer_show_function, buf); |
3865 | else | |
3866 | { | |
53f76081 | 3867 | window = Fdisplay_buffer (buf, Qnil, Qnil); |
7ab12479 | 3868 | |
1ae1a37d | 3869 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3870 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3871 | Vminibuf_scroll_window = window; |
3872 | w = XWINDOW (window); | |
d834a2e9 | 3873 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3874 | XSETFASTINT (w->min_hscroll, 0); |
2d0834cc SM |
3875 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3876 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3877 | |
beb4e312 | 3878 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3879 | and its buffer current. */ |
2d0834cc SM |
3880 | |
3881 | if (!NILP (Vrun_hooks) | |
3882 | && !NILP (Fboundp (Qtemp_buffer_show_hook)) | |
3883 | && !NILP (Fsymbol_value (Qtemp_buffer_show_hook))) | |
2cccc823 | 3884 | { |
2d0834cc SM |
3885 | int count = SPECPDL_INDEX (); |
3886 | Lisp_Object prev_window, prev_buffer; | |
3887 | prev_window = selected_window; | |
3888 | XSETBUFFER (prev_buffer, old); | |
0cc1039f | 3889 | |
2d0834cc SM |
3890 | /* Select the window that was chosen, for running the hook. |
3891 | Note: Both Fselect_window and select_window_norecord may | |
3892 | set-buffer to the buffer displayed in the window, | |
3893 | so we need to save the current buffer. --stef */ | |
3894 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3895 | record_unwind_protect (select_window_norecord, prev_window); | |
3896 | Fselect_window (window, Qt); | |
3897 | Fset_buffer (w->buffer); | |
3898 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); | |
3899 | unbind_to (count, Qnil); | |
2cccc823 RS |
3900 | } |
3901 | } | |
7ab12479 JB |
3902 | } |
3903 | \f | |
dfcf069d | 3904 | static void |
7ab12479 JB |
3905 | make_dummy_parent (window) |
3906 | Lisp_Object window; | |
3907 | { | |
cffec418 | 3908 | Lisp_Object new; |
7ab12479 | 3909 | register struct window *o, *p; |
cffec418 | 3910 | int i; |
7ab12479 | 3911 | |
cffec418 | 3912 | o = XWINDOW (window); |
26605be9 | 3913 | p = allocate_window (); |
cffec418 | 3914 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
3915 | ((struct Lisp_Vector *) p)->contents[i] |
3916 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 3917 | XSETWINDOW (new, p); |
7ab12479 | 3918 | |
2a1893f4 SM |
3919 | ++sequence_number; |
3920 | XSETFASTINT (p->sequence_number, sequence_number); | |
7ab12479 JB |
3921 | |
3922 | /* Put new into window structure in place of window */ | |
3923 | replace_window (window, new); | |
3924 | ||
3925 | o->next = Qnil; | |
3926 | o->prev = Qnil; | |
3927 | o->vchild = Qnil; | |
3928 | o->hchild = Qnil; | |
3929 | o->parent = new; | |
3930 | ||
3931 | p->start = Qnil; | |
3932 | p->pointm = Qnil; | |
3933 | p->buffer = Qnil; | |
3934 | } | |
3935 | ||
3936 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
fdb82f93 PJ |
3937 | doc: /* Split WINDOW, putting SIZE lines in the first of the pair. |
3938 | WINDOW defaults to selected one and SIZE to half its size. | |
3939 | If optional third arg HORFLAG is non-nil, split side by side | |
3940 | and put SIZE columns in the first of the pair. In that case, | |
876e2665 | 3941 | SIZE includes that window's scroll bar, or the divider column to its right. |
c2755926 LT |
3942 | Interactively, all arguments are nil. |
3943 | ||
3944 | Returns the newly created window (which is the lower or rightmost one). | |
19ca94ce RS |
3945 | The upper or leftmost window is the original one, and remains selected |
3946 | if it was selected before. | |
3947 | ||
c2755926 | 3948 | See Info node `(elisp)Splitting Windows' for more details and examples.*/) |
fdb82f93 | 3949 | (window, size, horflag) |
77ae0fe3 | 3950 | Lisp_Object window, size, horflag; |
7ab12479 JB |
3951 | { |
3952 | register Lisp_Object new; | |
3953 | register struct window *o, *p; | |
c0807608 | 3954 | FRAME_PTR fo; |
77ae0fe3 | 3955 | register int size_int; |
7ab12479 | 3956 | |
265a9e55 | 3957 | if (NILP (window)) |
7ab12479 JB |
3958 | window = selected_window; |
3959 | else | |
b7826503 | 3960 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3961 | |
3962 | o = XWINDOW (window); | |
c0807608 | 3963 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 3964 | |
77ae0fe3 | 3965 | if (NILP (size)) |
7ab12479 | 3966 | { |
265a9e55 | 3967 | if (!NILP (horflag)) |
c0807608 | 3968 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
3969 | the usable space in columns by two. |
3970 | We round up, since the left-hand window may include | |
3971 | a dividing line, while the right-hand may not. */ | |
949cf20f | 3972 | size_int = (XFASTINT (o->total_cols) + 1) >> 1; |
7ab12479 | 3973 | else |
949cf20f | 3974 | size_int = XFASTINT (o->total_lines) >> 1; |
7ab12479 JB |
3975 | } |
3976 | else | |
3977 | { | |
b7826503 | 3978 | CHECK_NUMBER (size); |
77ae0fe3 | 3979 | size_int = XINT (size); |
7ab12479 JB |
3980 | } |
3981 | ||
3982 | if (MINI_WINDOW_P (o)) | |
3983 | error ("Attempt to split minibuffer window"); | |
233a4a2c GM |
3984 | else if (window_fixed_size_p (o, !NILP (horflag), 0)) |
3985 | error ("Attempt to split fixed-size window"); | |
7ab12479 | 3986 | |
a481b3ea | 3987 | check_min_window_sizes (); |
7ab12479 | 3988 | |
265a9e55 | 3989 | if (NILP (horflag)) |
7ab12479 | 3990 | { |
77ae0fe3 KH |
3991 | if (size_int < window_min_height) |
3992 | error ("Window height %d too small (after splitting)", size_int); | |
949cf20f | 3993 | if (size_int + window_min_height > XFASTINT (o->total_lines)) |
37962e60 | 3994 | error ("Window height %d too small (after splitting)", |
949cf20f | 3995 | XFASTINT (o->total_lines) - size_int); |
265a9e55 JB |
3996 | if (NILP (o->parent) |
3997 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
3998 | { |
3999 | make_dummy_parent (window); | |
4000 | new = o->parent; | |
4001 | XWINDOW (new)->vchild = window; | |
4002 | } | |
4003 | } | |
4004 | else | |
4005 | { | |
77ae0fe3 KH |
4006 | if (size_int < window_min_width) |
4007 | error ("Window width %d too small (after splitting)", size_int); | |
a59fed7e | 4008 | |
949cf20f | 4009 | if (size_int + window_min_width > XFASTINT (o->total_cols)) |
37962e60 | 4010 | error ("Window width %d too small (after splitting)", |
949cf20f | 4011 | XFASTINT (o->total_cols) - size_int); |
265a9e55 JB |
4012 | if (NILP (o->parent) |
4013 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
4014 | { |
4015 | make_dummy_parent (window); | |
4016 | new = o->parent; | |
4017 | XWINDOW (new)->hchild = window; | |
4018 | } | |
4019 | } | |
4020 | ||
4021 | /* Now we know that window's parent is a vertical combination | |
4022 | if we are dividing vertically, or a horizontal combination | |
4023 | if we are making side-by-side windows */ | |
4024 | ||
4025 | windows_or_buffers_changed++; | |
c0807608 | 4026 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
4027 | new = make_window (); |
4028 | p = XWINDOW (new); | |
4029 | ||
44fa5b1e | 4030 | p->frame = o->frame; |
7ab12479 | 4031 | p->next = o->next; |
265a9e55 | 4032 | if (!NILP (p->next)) |
7ab12479 JB |
4033 | XWINDOW (p->next)->prev = new; |
4034 | p->prev = window; | |
4035 | o->next = new; | |
4036 | p->parent = o->parent; | |
4037 | p->buffer = Qt; | |
5500c422 GM |
4038 | p->window_end_valid = Qnil; |
4039 | bzero (&p->last_cursor, sizeof p->last_cursor); | |
7ab12479 | 4040 | |
949cf20f KS |
4041 | /* Duplicate special geometry settings. */ |
4042 | ||
4043 | p->left_margin_cols = o->left_margin_cols; | |
4044 | p->right_margin_cols = o->right_margin_cols; | |
4045 | p->left_fringe_width = o->left_fringe_width; | |
4046 | p->right_fringe_width = o->right_fringe_width; | |
4047 | p->fringes_outside_margins = o->fringes_outside_margins; | |
4048 | p->scroll_bar_width = o->scroll_bar_width; | |
4049 | p->vertical_scroll_bar_type = o->vertical_scroll_bar_type; | |
4050 | ||
44fa5b1e | 4051 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 4052 | |
265a9e55 | 4053 | if (!NILP (horflag)) |
7ab12479 | 4054 | { |
949cf20f KS |
4055 | p->total_lines = o->total_lines; |
4056 | p->top_line = o->top_line; | |
4057 | XSETFASTINT (p->total_cols, XFASTINT (o->total_cols) - size_int); | |
4058 | XSETFASTINT (o->total_cols, size_int); | |
4059 | XSETFASTINT (p->left_col, XFASTINT (o->left_col) + size_int); | |
4060 | adjust_window_margins (p); | |
4061 | adjust_window_margins (o); | |
7ab12479 JB |
4062 | } |
4063 | else | |
4064 | { | |
949cf20f KS |
4065 | p->left_col = o->left_col; |
4066 | p->total_cols = o->total_cols; | |
4067 | XSETFASTINT (p->total_lines, XFASTINT (o->total_lines) - size_int); | |
4068 | XSETFASTINT (o->total_lines, size_int); | |
4069 | XSETFASTINT (p->top_line, XFASTINT (o->top_line) + size_int); | |
7ab12479 JB |
4070 | } |
4071 | ||
5500c422 GM |
4072 | /* Adjust glyph matrices. */ |
4073 | adjust_glyphs (fo); | |
949cf20f KS |
4074 | |
4075 | Fset_window_buffer (new, o->buffer, Qt); | |
7ab12479 JB |
4076 | return new; |
4077 | } | |
4078 | \f | |
56ebfae2 | 4079 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", |
fdb82f93 PJ |
4080 | doc: /* Make current window ARG lines bigger. |
4081 | From program, optional second arg non-nil means grow sideways ARG columns. | |
f95284d2 | 4082 | Interactively, if an argument is not given, make the window one line bigger. |
5afc696a | 4083 | If HORIZONTAL is non-nil, enlarge horizontally instead of vertically. |
56ebfae2 RS |
4084 | This function can delete windows, even the second window, if they get |
4085 | too small. */) | |
4086 | (arg, horizontal) | |
4087 | Lisp_Object arg, horizontal; | |
7ab12479 | 4088 | { |
b7826503 | 4089 | CHECK_NUMBER (arg); |
56ebfae2 | 4090 | enlarge_window (selected_window, XINT (arg), !NILP (horizontal)); |
543f5fb1 RS |
4091 | |
4092 | if (! NILP (Vwindow_configuration_change_hook)) | |
4093 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
4094 | ||
7ab12479 JB |
4095 | return Qnil; |
4096 | } | |
4097 | ||
56ebfae2 | 4098 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", |
fdb82f93 PJ |
4099 | doc: /* Make current window ARG lines smaller. |
4100 | From program, optional second arg non-nil means shrink sideways arg columns. | |
56ebfae2 | 4101 | Interactively, if an argument is not given, make the window one line smaller. Only |
a5731348 | 4102 | siblings to the right or below are changed. */) |
56ebfae2 RS |
4103 | (arg, side) |
4104 | Lisp_Object arg, side; | |
7ab12479 | 4105 | { |
b7826503 | 4106 | CHECK_NUMBER (arg); |
56ebfae2 | 4107 | enlarge_window (selected_window, -XINT (arg), !NILP (side)); |
543f5fb1 RS |
4108 | |
4109 | if (! NILP (Vwindow_configuration_change_hook)) | |
4110 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
4111 | ||
7ab12479 JB |
4112 | return Qnil; |
4113 | } | |
4114 | ||
4115 | int | |
4116 | window_height (window) | |
4117 | Lisp_Object window; | |
4118 | { | |
4119 | register struct window *p = XWINDOW (window); | |
949cf20f | 4120 | return WINDOW_TOTAL_LINES (p); |
7ab12479 JB |
4121 | } |
4122 | ||
4123 | int | |
4124 | window_width (window) | |
4125 | Lisp_Object window; | |
4126 | { | |
4127 | register struct window *p = XWINDOW (window); | |
949cf20f | 4128 | return WINDOW_TOTAL_COLS (p); |
7ab12479 JB |
4129 | } |
4130 | ||
177c0ea7 | 4131 | |
7ab12479 | 4132 | #define CURBEG(w) \ |
5afc696a | 4133 | *(horiz_flag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line)) |
7ab12479 JB |
4134 | |
4135 | #define CURSIZE(w) \ | |
5afc696a RS |
4136 | *(horiz_flag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines)) |
4137 | ||
7ab12479 | 4138 | |
5afc696a RS |
4139 | /* Enlarge WINDOW by DELTA. |
4140 | HORIZ_FLAG nonzero means enlarge it horizontally; | |
4141 | zero means do it vertically. | |
233a4a2c | 4142 | |
5afc696a RS |
4143 | Siblings of the selected window are resized to fulfill the size |
4144 | request. If they become too small in the process, they will be | |
56ebfae2 | 4145 | deleted. */ |
7ab12479 | 4146 | |
f984d4fc | 4147 | static void |
56ebfae2 | 4148 | enlarge_window (window, delta, horiz_flag) |
86c8e823 | 4149 | Lisp_Object window; |
56ebfae2 | 4150 | int delta, horiz_flag; |
7ab12479 | 4151 | { |
86c8e823 | 4152 | Lisp_Object parent, next, prev; |
233a4a2c | 4153 | struct window *p; |
3578db3c KR |
4154 | Lisp_Object *sizep; |
4155 | int maximum; | |
5e14b1fc | 4156 | int (*sizefun) P_ ((Lisp_Object)) |
5afc696a | 4157 | = horiz_flag ? window_width : window_height; |
233a4a2c | 4158 | void (*setsizefun) P_ ((Lisp_Object, int, int)) |
5afc696a | 4159 | = (horiz_flag ? set_window_width : set_window_height); |
7ab12479 | 4160 | |
233a4a2c GM |
4161 | /* Check values of window_min_width and window_min_height for |
4162 | validity. */ | |
a481b3ea | 4163 | check_min_window_sizes (); |
7ab12479 | 4164 | |
233a4a2c | 4165 | /* Give up if this window cannot be resized. */ |
5afc696a | 4166 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) |
233a4a2c GM |
4167 | error ("Window is not resizable"); |
4168 | ||
4169 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
4170 | while (1) |
4171 | { | |
4172 | p = XWINDOW (window); | |
4173 | parent = p->parent; | |
177c0ea7 | 4174 | |
265a9e55 | 4175 | if (NILP (parent)) |
7ab12479 | 4176 | { |
5afc696a | 4177 | if (horiz_flag) |
7ab12479 JB |
4178 | error ("No other window to side of this one"); |
4179 | break; | |
4180 | } | |
177c0ea7 | 4181 | |
5afc696a | 4182 | if (horiz_flag |
233a4a2c | 4183 | ? !NILP (XWINDOW (parent)->hchild) |
265a9e55 | 4184 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 4185 | break; |
177c0ea7 | 4186 | |
7ab12479 JB |
4187 | window = parent; |
4188 | } | |
4189 | ||
05c2896a | 4190 | sizep = &CURSIZE (window); |
7ab12479 | 4191 | |
7ab12479 JB |
4192 | { |
4193 | register int maxdelta; | |
7ab12479 | 4194 | |
f95284d2 RS |
4195 | /* Compute the maximum size increment this window can have. */ |
4196 | ||
56ebfae2 RS |
4197 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) |
4198 | /* This is a main window followed by a minibuffer. */ | |
4199 | : !NILP (p->next) ? ((*sizefun) (p->next) | |
4200 | - window_min_size (XWINDOW (p->next), | |
4201 | horiz_flag, 0, 0)) | |
4202 | /* This is a minibuffer following a main window. */ | |
4203 | : !NILP (p->prev) ? ((*sizefun) (p->prev) | |
4204 | - window_min_size (XWINDOW (p->prev), | |
4205 | horiz_flag, 0, 0)) | |
4206 | /* This is a frame with only one window, a minibuffer-only | |
4207 | or a minibufferless frame. */ | |
4208 | : (delta = 0)); | |
7ab12479 JB |
4209 | |
4210 | if (delta > maxdelta) | |
4211 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
4212 | the full frame, or make the only window aside from the |
4213 | minibuffer the full frame. */ | |
7ab12479 | 4214 | delta = maxdelta; |
6b54027b | 4215 | } |
d5783c40 | 4216 | |
5afc696a | 4217 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), horiz_flag, 0, 0)) |
6b54027b | 4218 | { |
543f5fb1 | 4219 | delete_window (window); |
d5783c40 | 4220 | return; |
6b54027b RS |
4221 | } |
4222 | ||
4223 | if (delta == 0) | |
4224 | return; | |
7ab12479 | 4225 | |
f95284d2 | 4226 | /* Find the total we can get from other siblings without deleting them. */ |
db98a733 RS |
4227 | maximum = 0; |
4228 | for (next = p->next; ! NILP (next); next = XWINDOW (next)->next) | |
c1636aa6 | 4229 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
5afc696a | 4230 | horiz_flag, 0, 0); |
56ebfae2 RS |
4231 | for (prev = p->prev; ! NILP (prev); prev = XWINDOW (prev)->prev) |
4232 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), | |
4233 | horiz_flag, 0, 0); | |
db98a733 | 4234 | |
f95284d2 | 4235 | /* If we can get it all from them without deleting them, do so. */ |
c6b530ed | 4236 | if (delta <= maximum) |
7ab12479 | 4237 | { |
db98a733 RS |
4238 | Lisp_Object first_unaffected; |
4239 | Lisp_Object first_affected; | |
233a4a2c | 4240 | int fixed_p; |
db98a733 RS |
4241 | |
4242 | next = p->next; | |
4243 | prev = p->prev; | |
4244 | first_affected = window; | |
4245 | /* Look at one sibling at a time, | |
4246 | moving away from this window in both directions alternately, | |
4247 | and take as much as we can get without deleting that sibling. */ | |
f95284d2 | 4248 | while (delta != 0 |
56ebfae2 | 4249 | && (!NILP (next) || !NILP (prev))) |
db98a733 | 4250 | { |
db98a733 RS |
4251 | if (! NILP (next)) |
4252 | { | |
c1636aa6 | 4253 | int this_one = ((*sizefun) (next) |
233a4a2c | 4254 | - window_min_size (XWINDOW (next), |
5afc696a | 4255 | horiz_flag, 0, &fixed_p)); |
233a4a2c GM |
4256 | if (!fixed_p) |
4257 | { | |
4258 | if (this_one > delta) | |
4259 | this_one = delta; | |
177c0ea7 | 4260 | |
233a4a2c | 4261 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); |
3578db3c | 4262 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 4263 | |
233a4a2c GM |
4264 | delta -= this_one; |
4265 | } | |
177c0ea7 | 4266 | |
db98a733 RS |
4267 | next = XWINDOW (next)->next; |
4268 | } | |
177c0ea7 | 4269 | |
db98a733 RS |
4270 | if (delta == 0) |
4271 | break; | |
177c0ea7 | 4272 | |
56ebfae2 | 4273 | if (! NILP (prev)) |
db98a733 | 4274 | { |
c1636aa6 | 4275 | int this_one = ((*sizefun) (prev) |
233a4a2c | 4276 | - window_min_size (XWINDOW (prev), |
5afc696a | 4277 | horiz_flag, 0, &fixed_p)); |
233a4a2c GM |
4278 | if (!fixed_p) |
4279 | { | |
4280 | if (this_one > delta) | |
4281 | this_one = delta; | |
177c0ea7 | 4282 | |
233a4a2c | 4283 | first_affected = prev; |
177c0ea7 | 4284 | |
233a4a2c | 4285 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); |
3578db3c | 4286 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
4287 | |
4288 | delta -= this_one; | |
4289 | } | |
177c0ea7 | 4290 | |
db98a733 RS |
4291 | prev = XWINDOW (prev)->prev; |
4292 | } | |
4293 | } | |
4294 | ||
233a4a2c GM |
4295 | xassert (delta == 0); |
4296 | ||
db98a733 RS |
4297 | /* Now recalculate the edge positions of all the windows affected, |
4298 | based on the new sizes. */ | |
4299 | first_unaffected = next; | |
4300 | prev = first_affected; | |
4301 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
4302 | prev = next, next = XWINDOW (next)->next) | |
4303 | { | |
3578db3c | 4304 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
4305 | /* This does not change size of NEXT, |
4306 | but it propagates the new top edge to its children */ | |
4307 | (*setsizefun) (next, (*sizefun) (next), 0); | |
4308 | } | |
7ab12479 JB |
4309 | } |
4310 | else | |
4311 | { | |
4312 | register int delta1; | |
4313 | register int opht = (*sizefun) (parent); | |
4314 | ||
3578db3c | 4315 | if (opht <= XINT (*sizep) + delta) |
daf516d3 RS |
4316 | { |
4317 | /* If trying to grow this window to or beyond size of the parent, | |
4318 | just delete all the sibling windows. */ | |
dc1ab1ee | 4319 | Lisp_Object start, tem, next; |
daf516d3 | 4320 | |
dc1ab1ee RS |
4321 | start = XWINDOW (parent)->vchild; |
4322 | if (NILP (start)) | |
4323 | start = XWINDOW (parent)->hchild; | |
daf516d3 | 4324 | |
dc1ab1ee RS |
4325 | /* Delete any siblings that come after WINDOW. */ |
4326 | tem = XWINDOW (window)->next; | |
daf516d3 RS |
4327 | while (! NILP (tem)) |
4328 | { | |
4329 | next = XWINDOW (tem)->next; | |
dc1ab1ee RS |
4330 | delete_window (tem); |
4331 | tem = next; | |
4332 | } | |
4333 | ||
4334 | /* Delete any siblings that come after WINDOW. | |
4335 | Note that if START is not WINDOW, then WINDOW still | |
4336 | Fhas siblings, so WINDOW has not yet replaced its parent. */ | |
4337 | tem = start; | |
4338 | while (! EQ (tem, window)) | |
4339 | { | |
4340 | next = XWINDOW (tem)->next; | |
4341 | delete_window (tem); | |
daf516d3 RS |
4342 | tem = next; |
4343 | } | |
4344 | } | |
7ab12479 | 4345 | else |
233a4a2c GM |
4346 | { |
4347 | /* Otherwise, make delta1 just right so that if we add | |
4348 | delta1 lines to this window and to the parent, and then | |
4349 | shrink the parent back to its original size, the new | |
4350 | proportional size of this window will increase by delta. | |
4351 | ||
4352 | The function size_window will compute the new height h' | |
4353 | of the window from delta1 as: | |
177c0ea7 | 4354 | |
233a4a2c GM |
4355 | e = delta1/n |
4356 | x = delta1 - delta1/n * n for the 1st resizable child | |
4357 | h' = h + e + x | |
4358 | ||
4359 | where n is the number of children that can be resized. | |
4360 | We can ignore x by choosing a delta1 that is a multiple of | |
4361 | n. We want the height of this window to come out as | |
177c0ea7 | 4362 | |
233a4a2c GM |
4363 | h' = h + delta |
4364 | ||
4365 | So, delta1 must be | |
177c0ea7 | 4366 | |
233a4a2c GM |
4367 | h + e = h + delta |
4368 | delta1/n = delta | |
4369 | delta1 = n * delta. | |
4370 | ||
a5731348 | 4371 | The number of children n equals the number of resizable |
233a4a2c | 4372 | children of this window + 1 because we know window itself |
6e0dca3d | 4373 | is resizable (otherwise we would have signalled an error). */ |
233a4a2c GM |
4374 | |
4375 | struct window *w = XWINDOW (window); | |
4376 | Lisp_Object s; | |
4377 | int n = 1; | |
4378 | ||
4379 | for (s = w->next; !NILP (s); s = XWINDOW (s)->next) | |
5afc696a | 4380 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c GM |
4381 | ++n; |
4382 | for (s = w->prev; !NILP (s); s = XWINDOW (s)->prev) | |
5afc696a | 4383 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c GM |
4384 | ++n; |
4385 | ||
4386 | delta1 = n * delta; | |
7ab12479 | 4387 | |
daf516d3 RS |
4388 | /* Add delta1 lines or columns to this window, and to the parent, |
4389 | keeping things consistent while not affecting siblings. */ | |
4390 | XSETINT (CURSIZE (parent), opht + delta1); | |
4391 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
4392 | ||
4393 | /* Squeeze out delta1 lines or columns from our parent, | |
4394 | shriking this window and siblings proportionately. | |
4395 | This brings parent back to correct size. | |
4396 | Delta1 was calculated so this makes this window the desired size, | |
4397 | taking it all out of the siblings. */ | |
4398 | (*setsizefun) (parent, opht, 0); | |
4399 | ||
4400 | } | |
7ab12479 JB |
4401 | } |
4402 | ||
d834a2e9 | 4403 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 4404 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
4405 | |
4406 | /* Adjust glyph matrices. */ | |
4407 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 4408 | } |
c1636aa6 | 4409 | |
0d384044 RS |
4410 | |
4411 | /* Adjust the size of WINDOW by DELTA, moving only its trailing edge. | |
4412 | HORIZ_FLAG nonzero means adjust the width, moving the right edge. | |
4413 | zero means adjust the height, moving the bottom edge. | |
4414 | ||
4415 | Following siblings of the selected window are resized to fulfill | |
4416 | the size request. If they become too small in the process, they | |
4417 | are not deleted; instead, we signal an error. */ | |
4418 | ||
4419 | static void | |
4420 | adjust_window_trailing_edge (window, delta, horiz_flag) | |
4421 | Lisp_Object window; | |
4422 | int delta, horiz_flag; | |
4423 | { | |
4424 | Lisp_Object parent, child; | |
4425 | struct window *p; | |
4426 | Lisp_Object old_config = Fcurrent_window_configuration (Qnil); | |
4427 | int delcount = window_deletion_count; | |
4428 | ||
4429 | /* Check values of window_min_width and window_min_height for | |
4430 | validity. */ | |
4431 | check_min_window_sizes (); | |
4432 | ||
4433 | if (NILP (window)) | |
4434 | window = Fselected_window (); | |
4435 | ||
4436 | CHECK_WINDOW (window); | |
4437 | ||
4438 | /* Give up if this window cannot be resized. */ | |
4439 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) | |
4440 | error ("Window is not resizable"); | |
4441 | ||
4442 | while (1) | |
4443 | { | |
bd99e242 RS |
4444 | Lisp_Object first_parallel = Qnil; |
4445 | ||
c32de52a | 4446 | if (NILP (window)) |
0d384044 | 4447 | { |
5fe0b054 RS |
4448 | /* This happens if WINDOW on the previous iteration was |
4449 | at top level of the window tree. */ | |
0d384044 | 4450 | Fset_window_configuration (old_config); |
c32de52a | 4451 | error ("Specified window edge is fixed"); |
0d384044 RS |
4452 | } |
4453 | ||
c32de52a RS |
4454 | p = XWINDOW (window); |
4455 | parent = p->parent; | |
4456 | ||
bd99e242 RS |
4457 | /* See if this level has windows in parallel in the specified |
4458 | direction. If so, set FIRST_PARALLEL to the first one. */ | |
4459 | if (horiz_flag) | |
4460 | { | |
4461 | if (! NILP (parent) && !NILP (XWINDOW (parent)->vchild)) | |
4462 | first_parallel = XWINDOW (parent)->vchild; | |
5fe0b054 RS |
4463 | else if (NILP (parent) && !NILP (p->next)) |
4464 | { | |
4465 | /* Handle the vertical chain of main window and minibuffer | |
4466 | which has no parent. */ | |
4467 | first_parallel = window; | |
4468 | while (! NILP (XWINDOW (first_parallel)->prev)) | |
4469 | first_parallel = XWINDOW (first_parallel)->prev; | |
4470 | } | |
bd99e242 RS |
4471 | } |
4472 | else | |
4473 | { | |
4474 | if (! NILP (parent) && !NILP (XWINDOW (parent)->hchild)) | |
4475 | first_parallel = XWINDOW (parent)->hchild; | |
4476 | } | |
4477 | ||
c32de52a | 4478 | /* If this level's succession is in the desired dimension, |
5fe0b054 RS |
4479 | and this window is the last one, and there is no higher level, |
4480 | its trailing edge is fixed. */ | |
4481 | if (NILP (XWINDOW (window)->next) && NILP (first_parallel) | |
4482 | && NILP (parent)) | |
c32de52a RS |
4483 | { |
4484 | Fset_window_configuration (old_config); | |
4485 | error ("Specified window edge is fixed"); | |
4486 | } | |
4487 | ||
0d384044 RS |
4488 | /* Don't make this window too small. */ |
4489 | if (XINT (CURSIZE (window)) + delta | |
4490 | < (horiz_flag ? window_min_width : window_min_height)) | |
4491 | { | |
4492 | Fset_window_configuration (old_config); | |
4493 | error ("Cannot adjust window size as specified"); | |
4494 | } | |
4495 | ||
4496 | /* Clear out some redisplay caches. */ | |
4497 | XSETFASTINT (p->last_modified, 0); | |
4498 | XSETFASTINT (p->last_overlay_modified, 0); | |
4499 | ||
4500 | /* Adjust this window's edge. */ | |
4501 | XSETINT (CURSIZE (window), | |
4502 | XINT (CURSIZE (window)) + delta); | |
4503 | ||
4504 | /* If this window has following siblings in the desired dimension, | |
bd99e242 RS |
4505 | make them smaller, and exit the loop. |
4506 | ||
0d384044 RS |
4507 | (If we reach the top of the tree and can never do this, |
4508 | we will fail and report an error, above.) */ | |
bd99e242 | 4509 | if (NILP (first_parallel)) |
0d384044 | 4510 | { |
c32de52a | 4511 | if (!NILP (p->next)) |
0d384044 | 4512 | { |
e99c7521 JD |
4513 | /* This may happen for the minibuffer. In that case |
4514 | the window_deletion_count check below does not work. */ | |
a53d44a8 | 4515 | if (XINT (CURSIZE (p->next)) - delta <= 0) |
e99c7521 JD |
4516 | { |
4517 | Fset_window_configuration (old_config); | |
4518 | error ("Cannot adjust window size as specified"); | |
4519 | } | |
4520 | ||
0d384044 RS |
4521 | XSETINT (CURBEG (p->next), |
4522 | XINT (CURBEG (p->next)) + delta); | |
4523 | size_window (p->next, XINT (CURSIZE (p->next)) - delta, | |
5fe0b054 | 4524 | horiz_flag, 0, 1, 0); |
0d384044 RS |
4525 | break; |
4526 | } | |
4527 | } | |
4528 | else | |
4529 | /* Here we have a chain of parallel siblings, in the other dimension. | |
4530 | Change the size of the other siblings. */ | |
bd99e242 | 4531 | for (child = first_parallel; |
0d384044 RS |
4532 | ! NILP (child); |
4533 | child = XWINDOW (child)->next) | |
4534 | if (! EQ (child, window)) | |
4535 | size_window (child, XINT (CURSIZE (child)) + delta, | |
5fe0b054 | 4536 | horiz_flag, 0, 0, 1); |
0d384044 RS |
4537 | |
4538 | window = parent; | |
4539 | } | |
4540 | ||
4541 | /* If we made a window so small it got deleted, | |
4542 | we failed. Report failure. */ | |
4543 | if (delcount != window_deletion_count) | |
4544 | { | |
4545 | Fset_window_configuration (old_config); | |
4546 | error ("Cannot adjust window size as specified"); | |
4547 | } | |
4548 | ||
4549 | /* Adjust glyph matrices. */ | |
4550 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
4551 | } | |
4552 | ||
7ab12479 JB |
4553 | #undef CURBEG |
4554 | #undef CURSIZE | |
4555 | ||
0d384044 RS |
4556 | DEFUN ("adjust-window-trailing-edge", Fadjust_window_trailing_edge, |
4557 | Sadjust_window_trailing_edge, 3, 3, 0, | |
4558 | doc: /* Adjust the bottom or right edge of WINDOW by DELTA. | |
56ebfae2 | 4559 | If HORIZONTAL is non-nil, that means adjust the width, moving the right edge. |
0d384044 RS |
4560 | Otherwise, adjust the height, moving the bottom edge. |
4561 | ||
4562 | Following siblings of the selected window are resized to fulfill | |
4563 | the size request. If they become too small in the process, they | |
4564 | are not deleted; instead, we signal an error. */) | |
4565 | (window, delta, horizontal) | |
4566 | Lisp_Object window, delta, horizontal; | |
4567 | { | |
4568 | CHECK_NUMBER (delta); | |
4569 | adjust_window_trailing_edge (window, XINT (delta), !NILP (horizontal)); | |
4570 | ||
4571 | if (! NILP (Vwindow_configuration_change_hook)) | |
4572 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
4573 | ||
4574 | return Qnil; | |
4575 | } | |
4576 | ||
5500c422 | 4577 | |
f984d4fc GM |
4578 | \f |
4579 | /*********************************************************************** | |
4580 | Resizing Mini-Windows | |
4581 | ***********************************************************************/ | |
4582 | ||
4583 | static void shrink_window_lowest_first P_ ((struct window *, int)); | |
f984d4fc | 4584 | |
43b4a21f GM |
4585 | enum save_restore_action |
4586 | { | |
4587 | CHECK_ORIG_SIZES, | |
4588 | SAVE_ORIG_SIZES, | |
4589 | RESTORE_ORIG_SIZES | |
4590 | }; | |
4591 | ||
177c0ea7 | 4592 | static int save_restore_orig_size P_ ((struct window *, |
43b4a21f | 4593 | enum save_restore_action)); |
f984d4fc GM |
4594 | |
4595 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
4596 | from lowest windows first. */ | |
4597 | ||
4598 | static void | |
4599 | shrink_window_lowest_first (w, height) | |
4600 | struct window *w; | |
4601 | int height; | |
4602 | { | |
4603 | struct window *c; | |
4604 | Lisp_Object child; | |
4605 | int old_height; | |
4606 | ||
4607 | xassert (!MINI_WINDOW_P (w)); | |
4608 | ||
4609 | /* Set redisplay hints. */ | |
4610 | XSETFASTINT (w->last_modified, 0); | |
4611 | XSETFASTINT (w->last_overlay_modified, 0); | |
4612 | windows_or_buffers_changed++; | |
4613 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
4614 | ||
949cf20f KS |
4615 | old_height = XFASTINT (w->total_lines); |
4616 | XSETFASTINT (w->total_lines, height); | |
f984d4fc GM |
4617 | |
4618 | if (!NILP (w->hchild)) | |
4619 | { | |
4620 | for (child = w->hchild; !NILP (child); child = c->next) | |
4621 | { | |
4622 | c = XWINDOW (child); | |
949cf20f | 4623 | c->top_line = w->top_line; |
f984d4fc GM |
4624 | shrink_window_lowest_first (c, height); |
4625 | } | |
4626 | } | |
4627 | else if (!NILP (w->vchild)) | |
4628 | { | |
4629 | Lisp_Object last_child; | |
4630 | int delta = old_height - height; | |
4631 | int last_top; | |
6bbd7a29 GM |
4632 | |
4633 | last_child = Qnil; | |
177c0ea7 | 4634 | |
f984d4fc GM |
4635 | /* Find the last child. We are taking space from lowest windows |
4636 | first, so we iterate over children from the last child | |
4637 | backwards. */ | |
4638 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) | |
4639 | last_child = child; | |
4640 | ||
4641 | /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */ | |
4642 | for (child = last_child; delta && !NILP (child); child = c->prev) | |
4643 | { | |
4644 | int this_one; | |
177c0ea7 | 4645 | |
f984d4fc | 4646 | c = XWINDOW (child); |
949cf20f | 4647 | this_one = XFASTINT (c->total_lines) - MIN_SAFE_WINDOW_HEIGHT; |
f984d4fc GM |
4648 | |
4649 | if (this_one > delta) | |
4650 | this_one = delta; | |
4651 | ||
949cf20f | 4652 | shrink_window_lowest_first (c, XFASTINT (c->total_lines) - this_one); |
f984d4fc GM |
4653 | delta -= this_one; |
4654 | } | |
4655 | ||
4656 | /* Compute new positions. */ | |
949cf20f | 4657 | last_top = XINT (w->top_line); |
f984d4fc GM |
4658 | for (child = w->vchild; !NILP (child); child = c->next) |
4659 | { | |
4660 | c = XWINDOW (child); | |
949cf20f KS |
4661 | c->top_line = make_number (last_top); |
4662 | shrink_window_lowest_first (c, XFASTINT (c->total_lines)); | |
4663 | last_top += XFASTINT (c->total_lines); | |
f984d4fc GM |
4664 | } |
4665 | } | |
4666 | } | |
4667 | ||
4668 | ||
43b4a21f GM |
4669 | /* Save, restore, or check positions and sizes in the window tree |
4670 | rooted at W. ACTION says what to do. | |
f984d4fc | 4671 | |
949cf20f KS |
4672 | If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and |
4673 | orig_total_lines members are valid for all windows in the window | |
4674 | tree. Value is non-zero if they are valid. | |
177c0ea7 | 4675 | |
43b4a21f | 4676 | If ACTION is SAVE_ORIG_SIZES, save members top and height in |
949cf20f | 4677 | orig_top_line and orig_total_lines for all windows in the tree. |
43b4a21f | 4678 | |
949cf20f KS |
4679 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from values |
4680 | stored in orig_top_line and orig_total_lines for all windows. */ | |
43b4a21f GM |
4681 | |
4682 | static int | |
4683 | save_restore_orig_size (w, action) | |
f984d4fc | 4684 | struct window *w; |
43b4a21f | 4685 | enum save_restore_action action; |
f984d4fc | 4686 | { |
43b4a21f GM |
4687 | int success_p = 1; |
4688 | ||
f984d4fc GM |
4689 | while (w) |
4690 | { | |
4691 | if (!NILP (w->hchild)) | |
43b4a21f GM |
4692 | { |
4693 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
4694 | success_p = 0; | |
4695 | } | |
f984d4fc | 4696 | else if (!NILP (w->vchild)) |
43b4a21f GM |
4697 | { |
4698 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
4699 | success_p = 0; | |
4700 | } | |
177c0ea7 | 4701 | |
43b4a21f | 4702 | switch (action) |
f984d4fc | 4703 | { |
43b4a21f | 4704 | case CHECK_ORIG_SIZES: |
949cf20f | 4705 | if (!INTEGERP (w->orig_top_line) || !INTEGERP (w->orig_total_lines)) |
43b4a21f GM |
4706 | return 0; |
4707 | break; | |
4708 | ||
4709 | case SAVE_ORIG_SIZES: | |
949cf20f KS |
4710 | w->orig_top_line = w->top_line; |
4711 | w->orig_total_lines = w->total_lines; | |
43b4a21f GM |
4712 | XSETFASTINT (w->last_modified, 0); |
4713 | XSETFASTINT (w->last_overlay_modified, 0); | |
4714 | break; | |
4715 | ||
4716 | case RESTORE_ORIG_SIZES: | |
949cf20f KS |
4717 | xassert (INTEGERP (w->orig_top_line) && INTEGERP (w->orig_total_lines)); |
4718 | w->top_line = w->orig_top_line; | |
4719 | w->total_lines = w->orig_total_lines; | |
4720 | w->orig_total_lines = w->orig_top_line = Qnil; | |
43b4a21f GM |
4721 | XSETFASTINT (w->last_modified, 0); |
4722 | XSETFASTINT (w->last_overlay_modified, 0); | |
4723 | break; | |
4724 | ||
4725 | default: | |
4726 | abort (); | |
f984d4fc | 4727 | } |
43b4a21f | 4728 | |
f984d4fc GM |
4729 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
4730 | } | |
43b4a21f GM |
4731 | |
4732 | return success_p; | |
f984d4fc GM |
4733 | } |
4734 | ||
4735 | ||
4736 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
4737 | without deleting other windows. */ | |
4738 | ||
4739 | void | |
4740 | grow_mini_window (w, delta) | |
4741 | struct window *w; | |
4742 | int delta; | |
4743 | { | |
4744 | struct frame *f = XFRAME (w->frame); | |
4745 | struct window *root; | |
177c0ea7 | 4746 | |
f984d4fc GM |
4747 | xassert (MINI_WINDOW_P (w)); |
4748 | xassert (delta >= 0); | |
177c0ea7 | 4749 | |
f984d4fc GM |
4750 | /* Check values of window_min_width and window_min_height for |
4751 | validity. */ | |
4752 | check_min_window_sizes (); | |
4753 | ||
4754 | /* Compute how much we can enlarge the mini-window without deleting | |
4755 | other windows. */ | |
4756 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4757 | if (delta) | |
4758 | { | |
4759 | int min_height = window_min_size (root, 0, 0, 0); | |
949cf20f | 4760 | if (XFASTINT (root->total_lines) - delta < min_height) |
8b8bd9c6 | 4761 | /* Note that the root window may already be smaller than |
eafa3196 | 4762 | min_height. */ |
949cf20f | 4763 | delta = max (0, XFASTINT (root->total_lines) - min_height); |
f984d4fc | 4764 | } |
177c0ea7 | 4765 | |
f984d4fc GM |
4766 | if (delta) |
4767 | { | |
4768 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
4769 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
4770 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
4771 | |
4772 | /* Shrink other windows. */ | |
949cf20f | 4773 | shrink_window_lowest_first (root, XFASTINT (root->total_lines) - delta); |
f984d4fc GM |
4774 | |
4775 | /* Grow the mini-window. */ | |
949cf20f KS |
4776 | w->top_line = make_number (XFASTINT (root->top_line) + XFASTINT (root->total_lines)); |
4777 | w->total_lines = make_number (XFASTINT (w->total_lines) + delta); | |
f984d4fc GM |
4778 | XSETFASTINT (w->last_modified, 0); |
4779 | XSETFASTINT (w->last_overlay_modified, 0); | |
177c0ea7 | 4780 | |
f984d4fc GM |
4781 | adjust_glyphs (f); |
4782 | } | |
4783 | } | |
4784 | ||
4785 | ||
86c8e823 GM |
4786 | /* Shrink mini-window W. If there is recorded info about window sizes |
4787 | before a call to grow_mini_window, restore recorded window sizes. | |
4788 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
4789 | line. */ | |
f984d4fc GM |
4790 | |
4791 | void | |
4792 | shrink_mini_window (w) | |
4793 | struct window *w; | |
4794 | { | |
4795 | struct frame *f = XFRAME (w->frame); | |
4796 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4797 | ||
43b4a21f | 4798 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 4799 | { |
43b4a21f | 4800 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
4801 | adjust_glyphs (f); |
4802 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
4803 | windows_or_buffers_changed = 1; | |
4804 | } | |
949cf20f | 4805 | else if (XFASTINT (w->total_lines) > 1) |
86c8e823 | 4806 | { |
0130fe1a GM |
4807 | /* Distribute the additional lines of the mini-window |
4808 | among the other windows. */ | |
86c8e823 GM |
4809 | Lisp_Object window; |
4810 | XSETWINDOW (window, w); | |
56ebfae2 | 4811 | enlarge_window (window, 1 - XFASTINT (w->total_lines), 0); |
86c8e823 | 4812 | } |
f984d4fc GM |
4813 | } |
4814 | ||
4815 | ||
4816 | \f | |
5500c422 GM |
4817 | /* Mark window cursors off for all windows in the window tree rooted |
4818 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4819 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4820 | the frame are cleared. */ | |
4821 | ||
4822 | void | |
4823 | mark_window_cursors_off (w) | |
4824 | struct window *w; | |
4825 | { | |
4826 | while (w) | |
4827 | { | |
4828 | if (!NILP (w->hchild)) | |
4829 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4830 | else if (!NILP (w->vchild)) | |
4831 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
4832 | else | |
4833 | w->phys_cursor_on_p = 0; | |
4834 | ||
4835 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4836 | } | |
4837 | } | |
4838 | ||
4839 | ||
e9c195b1 | 4840 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4841 | |
4842 | int | |
4843 | window_internal_height (w) | |
4844 | struct window *w; | |
4845 | { | |
949cf20f | 4846 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4847 | |
e9c195b1 GM |
4848 | if (!MINI_WINDOW_P (w)) |
4849 | { | |
4850 | if (!NILP (w->parent) | |
4851 | || !NILP (w->vchild) | |
4852 | || !NILP (w->hchild) | |
4853 | || !NILP (w->next) | |
4854 | || !NILP (w->prev) | |
4855 | || WINDOW_WANTS_MODELINE_P (w)) | |
4856 | --ht; | |
7ab12479 | 4857 | |
e9c195b1 GM |
4858 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4859 | --ht; | |
4860 | } | |
7ab12479 JB |
4861 | |
4862 | return ht; | |
4863 | } | |
4864 | ||
535e0b8e JB |
4865 | |
4866 | /* Return the number of columns in W. | |
a3c87d4e | 4867 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 4868 | separating W from the sibling to its right. */ |
5500c422 | 4869 | |
535e0b8e | 4870 | int |
949cf20f | 4871 | window_box_text_cols (w) |
535e0b8e JB |
4872 | struct window *w; |
4873 | { | |
5500c422 | 4874 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
949cf20f | 4875 | int width = XINT (w->total_cols); |
535e0b8e | 4876 | |
949cf20f | 4877 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) |
5500c422 | 4878 | /* Scroll bars occupy a few columns. */ |
949cf20f KS |
4879 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); |
4880 | else if (!FRAME_WINDOW_P (f) | |
4881 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
5500c422 GM |
4882 | /* The column of `|' characters separating side-by-side windows |
4883 | occupies one column only. */ | |
4884 | width -= 1; | |
4885 | ||
5500c422 | 4886 | if (FRAME_WINDOW_P (f)) |
949cf20f KS |
4887 | /* On window-systems, fringes and display margins cannot be |
4888 | used for normal text. */ | |
4889 | width -= (WINDOW_FRINGE_COLS (w) | |
4890 | + WINDOW_LEFT_MARGIN_COLS (w) | |
4891 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
111e5992 RS |
4892 | |
4893 | return width; | |
535e0b8e JB |
4894 | } |
4895 | ||
5500c422 GM |
4896 | \f |
4897 | /************************************************************************ | |
4898 | Window Scrolling | |
4899 | ***********************************************************************/ | |
535e0b8e | 4900 | |
5500c422 | 4901 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4902 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4903 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4904 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4905 | means don't signal an error if we try to move over BEGV or ZV, | |
4906 | respectively. */ | |
7ab12479 | 4907 | |
101d1605 RS |
4908 | static void |
4909 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
4910 | Lisp_Object window; |
4911 | int n; | |
101d1605 | 4912 | int whole; |
f8026fd8 | 4913 | int noerror; |
5500c422 | 4914 | { |
cba59f77 RS |
4915 | immediate_quit = 1; |
4916 | ||
5500c422 GM |
4917 | /* If we must, use the pixel-based version which is much slower than |
4918 | the line-based one but can handle varying line heights. */ | |
4919 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
4920 | window_scroll_pixel_based (window, n, whole, noerror); | |
4921 | else | |
4922 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4923 | |
4924 | immediate_quit = 0; | |
5500c422 GM |
4925 | } |
4926 | ||
4927 | ||
4928 | /* Implementation of window_scroll that works based on pixel line | |
4929 | heights. See the comment of window_scroll for parameter | |
4930 | descriptions. */ | |
4931 | ||
4932 | static void | |
4933 | window_scroll_pixel_based (window, n, whole, noerror) | |
4934 | Lisp_Object window; | |
4935 | int n; | |
4936 | int whole; | |
4937 | int noerror; | |
4938 | { | |
4939 | struct it it; | |
4940 | struct window *w = XWINDOW (window); | |
4941 | struct text_pos start; | |
5500c422 | 4942 | int this_scroll_margin; |
5cdb3cf3 MB |
4943 | /* True if we fiddled the window vscroll field without really scrolling. */ |
4944 | int vscrolled = 0; | |
5a857365 | 4945 | int x, y, rtop, rbot, rowh, vpos; |
5500c422 GM |
4946 | |
4947 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
177c0ea7 | 4948 | |
5500c422 | 4949 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4950 | the screen. Allow PT to be partially visible, otherwise |
4951 | something like (scroll-down 1) with PT in the line before | |
4952 | the partially visible one would recenter. */ | |
5a857365 KS |
4953 | |
4954 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 GM |
4955 | { |
4956 | /* Move backward half the height of the window. Performance note: | |
4957 | vmotion used here is about 10% faster, but would give wrong | |
4958 | results for variable height lines. */ | |
4959 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4960 | it.current_y = it.last_visible_y; | |
f204989e | 4961 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4962 | |
5500c422 GM |
4963 | /* The function move_iterator_vertically may move over more than |
4964 | the specified y-distance. If it->w is small, e.g. a | |
4965 | mini-buffer window, we may end up in front of the window's | |
4966 | display area. This is the case when Start displaying at the | |
4967 | start of the line containing PT in this case. */ | |
4968 | if (it.current_y <= 0) | |
4969 | { | |
4970 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4971 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4972 | it.current_y = 0; |
4973 | } | |
4974 | ||
4975 | start = it.current.pos; | |
4976 | } | |
e56263e5 KS |
4977 | else if (auto_window_vscroll_p) |
4978 | { | |
5a857365 | 4979 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
4980 | { |
4981 | int px; | |
4982 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4983 | if (whole) | |
e856c216 KS |
4984 | dy = max ((window_box_height (w) |
4985 | - next_screen_context_lines * dy), | |
4986 | dy); | |
e56263e5 KS |
4987 | dy *= n; |
4988 | ||
5a857365 | 4989 | if (n < 0) |
e56263e5 | 4990 | { |
5a857365 KS |
4991 | /* Only vscroll backwards if already vscrolled forwards. */ |
4992 | if (w->vscroll < 0 && rtop > 0) | |
4993 | { | |
4994 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
4995 | Fset_window_vscroll (window, make_number (px), Qt); | |
4996 | return; | |
4997 | } | |
e56263e5 | 4998 | } |
5a857365 | 4999 | if (n > 0) |
e56263e5 | 5000 | { |
5a857365 KS |
5001 | /* Do vscroll if already vscrolled or only display line. */ |
5002 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
5003 | { | |
5004 | px = max (0, -w->vscroll + min (rbot, dy)); | |
5005 | Fset_window_vscroll (window, make_number (px), Qt); | |
5006 | return; | |
5007 | } | |
5008 | ||
5009 | /* Maybe modify window start instead of scrolling. */ | |
5010 | if (rbot > 0 || w->vscroll < 0) | |
5011 | { | |
5012 | int spos; | |
5013 | ||
5014 | Fset_window_vscroll (window, make_number (0), Qt); | |
5015 | /* If there are other text lines above the current row, | |
5016 | move window start to current row. Else to next row. */ | |
5017 | if (rbot > 0) | |
5018 | spos = XINT (Fline_beginning_position (Qnil)); | |
5019 | else | |
5020 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
5021 | set_marker_restricted (w->start, make_number (spos), | |
5022 | w->buffer); | |
5023 | w->start_at_line_beg = Qt; | |
5024 | w->update_mode_line = Qt; | |
5025 | XSETFASTINT (w->last_modified, 0); | |
5026 | XSETFASTINT (w->last_overlay_modified, 0); | |
5027 | /* Set force_start so that redisplay_window will run the | |
5028 | window-scroll-functions. */ | |
5029 | w->force_start = Qt; | |
5030 | return; | |
5031 | } | |
e56263e5 KS |
5032 | } |
5033 | } | |
5a857365 | 5034 | /* Cancel previous vscroll. */ |
e56263e5 KS |
5035 | Fset_window_vscroll (window, make_number (0), Qt); |
5036 | } | |
5500c422 | 5037 | |
d0c38d63 | 5038 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
5039 | point in the same window line as it is now, so get that line. */ |
5040 | if (!NILP (Vscroll_preserve_screen_position)) | |
5041 | { | |
c525d842 CY |
5042 | /* We preserve the goal pixel coordinate across consecutive |
5043 | calls to scroll-up or scroll-down. This avoids the | |
5044 | possibility of point becoming "stuck" on a tall line when | |
5045 | scrolling by one line. */ | |
66fe93d1 | 5046 | if (window_scroll_pixel_based_preserve_y < 0 |
7d619454 SM |
5047 | || (!EQ (current_kboard->Vlast_command, Qscroll_up) |
5048 | && !EQ (current_kboard->Vlast_command, Qscroll_down))) | |
c525d842 CY |
5049 | { |
5050 | start_display (&it, w, start); | |
5051 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 5052 | window_scroll_pixel_based_preserve_y = it.current_y; |
c525d842 | 5053 | } |
5500c422 GM |
5054 | } |
5055 | else | |
66fe93d1 | 5056 | window_scroll_pixel_based_preserve_y = -1; |
5500c422 GM |
5057 | |
5058 | /* Move iterator it from start the specified distance forward or | |
5059 | backward. The result is the new window start. */ | |
5060 | start_display (&it, w, start); | |
5061 | if (whole) | |
5062 | { | |
e856c216 KS |
5063 | int start_pos = IT_CHARPOS (it); |
5064 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
5065 | dy = max ((window_box_height (w) | |
5066 | - next_screen_context_lines * dy), | |
5067 | dy) * n; | |
d72340d4 GM |
5068 | |
5069 | /* Note that move_it_vertically always moves the iterator to the | |
5070 | start of a line. So, if the last line doesn't have a newline, | |
5071 | we would end up at the start of the line ending at ZV. */ | |
5072 | if (dy <= 0) | |
e856c216 KS |
5073 | { |
5074 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 5075 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
5076 | looking at an image that is taller that the window height. */ |
5077 | while (start_pos == IT_CHARPOS (it) | |
5078 | && start_pos > BEGV) | |
5079 | move_it_by_lines (&it, -1, 1); | |
5080 | } | |
d72340d4 | 5081 | else if (dy > 0) |
bed83ee4 | 5082 | { |
bed83ee4 KS |
5083 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
5084 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 5085 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
5086 | looking at an image that is taller that the window height. */ |
5087 | while (start_pos == IT_CHARPOS (it) | |
5088 | && start_pos < ZV) | |
5089 | move_it_by_lines (&it, 1, 1); | |
5090 | } | |
5500c422 GM |
5091 | } |
5092 | else | |
5093 | move_it_by_lines (&it, n, 1); | |
5094 | ||
96ae58c8 RS |
5095 | /* We failed if we find ZV is already on the screen (scrolling up, |
5096 | means there's nothing past the end), or if we can't start any | |
5097 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 5098 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 5099 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 5100 | { |
5cdb3cf3 MB |
5101 | if (IT_CHARPOS (it) == ZV) |
5102 | { | |
07ce8b53 RS |
5103 | if (it.current_y < it.last_visible_y |
5104 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 5105 | > it.last_visible_y)) |
a74eca50 GM |
5106 | { |
5107 | /* The last line was only partially visible, make it fully | |
5108 | visible. */ | |
5109 | w->vscroll = (it.last_visible_y | |
5110 | - it.current_y + it.max_ascent + it.max_descent); | |
5111 | adjust_glyphs (it.f); | |
5112 | } | |
5cdb3cf3 MB |
5113 | else if (noerror) |
5114 | return; | |
cf402f3f | 5115 | else if (n < 0) /* could happen with empty buffers */ |
ba96a5cf | 5116 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 | 5117 | else |
ba96a5cf | 5118 | xsignal0 (Qend_of_buffer); |
5cdb3cf3 | 5119 | } |
5500c422 | 5120 | else |
5cdb3cf3 MB |
5121 | { |
5122 | if (w->vscroll != 0) | |
5123 | /* The first line was only partially visible, make it fully | |
5124 | visible. */ | |
5125 | w->vscroll = 0; | |
5126 | else if (noerror) | |
5127 | return; | |
5128 | else | |
ba96a5cf | 5129 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 MB |
5130 | } |
5131 | ||
5132 | /* If control gets here, then we vscrolled. */ | |
5133 | ||
5134 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
5135 | ||
5136 | /* Don't try to change the window start below. */ | |
5137 | vscrolled = 1; | |
5500c422 GM |
5138 | } |
5139 | ||
5cdb3cf3 MB |
5140 | if (! vscrolled) |
5141 | { | |
dad67609 RS |
5142 | int pos = IT_CHARPOS (it); |
5143 | int bytepos; | |
e68def1e AS |
5144 | |
5145 | /* If in the middle of a multi-glyph character move forward to | |
5146 | the next character. */ | |
5147 | if (in_display_vector_p (&it)) | |
5148 | { | |
5149 | ++pos; | |
5150 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
5151 | } | |
5152 | ||
5cdb3cf3 | 5153 | /* Set the window start, and set up the window for redisplay. */ |
dad67609 | 5154 | set_marker_restricted (w->start, make_number (pos), |
5cdb3cf3 | 5155 | w->buffer); |
dad67609 RS |
5156 | bytepos = XMARKER (w->start)->bytepos; |
5157 | w->start_at_line_beg = ((pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n') | |
5158 | ? Qt : Qnil); | |
5cdb3cf3 MB |
5159 | w->update_mode_line = Qt; |
5160 | XSETFASTINT (w->last_modified, 0); | |
5161 | XSETFASTINT (w->last_overlay_modified, 0); | |
5162 | /* Set force_start so that redisplay_window will run the | |
5163 | window-scroll-functions. */ | |
5164 | w->force_start = Qt; | |
5165 | } | |
177c0ea7 | 5166 | |
dc297565 RS |
5167 | /* The rest of this function uses current_y in a nonstandard way, |
5168 | not including the height of the header line if any. */ | |
5500c422 | 5169 | it.current_y = it.vpos = 0; |
177c0ea7 | 5170 | |
940f53e5 RS |
5171 | /* Move PT out of scroll margins. |
5172 | This code wants current_y to be zero at the window start position | |
5173 | even if there is a header line. */ | |
5174 | this_scroll_margin = max (0, scroll_margin); | |
5175 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); | |
5176 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); | |
5177 | ||
5178 | if (n > 0) | |
5500c422 | 5179 | { |
940f53e5 RS |
5180 | /* We moved the window start towards ZV, so PT may be now |
5181 | in the scroll margin at the top. */ | |
5182 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
5183 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
5184 | && (NILP (Vscroll_preserve_screen_position) | |
5185 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5186 | /* We found PT at a legitimate height. Leave it alone. */ |
5187 | ; | |
66fe93d1 | 5188 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 5189 | { |
fa3c3426 RS |
5190 | /* If we have a header line, take account of it. |
5191 | This is necessary because we set it.current_y to 0, above. */ | |
c525d842 | 5192 | move_it_to (&it, -1, -1, |
66fe93d1 LT |
5193 | window_scroll_pixel_based_preserve_y |
5194 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c525d842 | 5195 | -1, MOVE_TO_Y); |
940f53e5 RS |
5196 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5197 | } | |
5198 | else | |
5500c422 | 5199 | { |
5500c422 | 5200 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
5201 | { |
5202 | int prev = it.current_y; | |
5203 | move_it_by_lines (&it, 1, 1); | |
5204 | if (prev == it.current_y) | |
5205 | break; | |
5206 | } | |
5500c422 GM |
5207 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5208 | } | |
940f53e5 RS |
5209 | } |
5210 | else if (n < 0) | |
5211 | { | |
5212 | int charpos, bytepos; | |
aed328bf | 5213 | int partial_p; |
940f53e5 | 5214 | |
66fe93d1 LT |
5215 | /* Save our position, for the |
5216 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
5217 | charpos = IT_CHARPOS (it); |
5218 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 5219 | |
940f53e5 RS |
5220 | /* We moved the window start towards BEGV, so PT may be now |
5221 | in the scroll margin at the bottom. */ | |
5222 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
5223 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
5224 | - this_scroll_margin - 1), | |
5225 | -1, | |
940f53e5 RS |
5226 | MOVE_TO_POS | MOVE_TO_Y); |
5227 | ||
aed328bf KS |
5228 | /* Save our position, in case it's correct. */ |
5229 | charpos = IT_CHARPOS (it); | |
5230 | bytepos = IT_BYTEPOS (it); | |
5231 | ||
5232 | /* See if point is on a partially visible line at the end. */ | |
5233 | if (it.what == IT_EOB) | |
5234 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
5235 | else | |
5236 | { | |
5237 | move_it_by_lines (&it, 1, 1); | |
5238 | partial_p = it.current_y > it.last_visible_y; | |
5239 | } | |
5240 | ||
bdf4ec93 RS |
5241 | if (charpos == PT && !partial_p |
5242 | && (NILP (Vscroll_preserve_screen_position) | |
5243 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5244 | /* We found PT before we found the display margin, so PT is ok. */ |
5245 | ; | |
66fe93d1 | 5246 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 RS |
5247 | { |
5248 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5249 | start_display (&it, w, start); | |
c525d842 CY |
5250 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
5251 | here because we called start_display again and did not | |
5252 | alter it.current_y this time. */ | |
66fe93d1 LT |
5253 | move_it_to (&it, -1, -1, window_scroll_pixel_based_preserve_y, -1, |
5254 | MOVE_TO_Y); | |
940f53e5 RS |
5255 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5256 | } | |
5257 | else | |
5258 | { | |
aed328bf | 5259 | if (partial_p) |
5cdb3cf3 MB |
5260 | /* The last line was only partially visible, so back up two |
5261 | lines to make sure we're on a fully visible line. */ | |
5262 | { | |
5263 | move_it_by_lines (&it, -2, 0); | |
5264 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
5265 | } | |
5266 | else | |
5267 | /* No, the position we saved is OK, so use it. */ | |
5268 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
5269 | } |
5270 | } | |
5271 | } | |
5272 | ||
5273 | ||
5274 | /* Implementation of window_scroll that works based on screen lines. | |
5275 | See the comment of window_scroll for parameter descriptions. */ | |
5276 | ||
5277 | static void | |
5278 | window_scroll_line_based (window, n, whole, noerror) | |
5279 | Lisp_Object window; | |
5280 | int n; | |
5281 | int whole; | |
5282 | int noerror; | |
7ab12479 JB |
5283 | { |
5284 | register struct window *w = XWINDOW (window); | |
5500c422 | 5285 | register int opoint = PT, opoint_byte = PT_BYTE; |
b73ea88e | 5286 | register int pos, pos_byte; |
7ab12479 JB |
5287 | register int ht = window_internal_height (w); |
5288 | register Lisp_Object tem; | |
5289 | int lose; | |
5500c422 | 5290 | Lisp_Object bolp; |
345d45b2 | 5291 | int startpos; |
101d1605 RS |
5292 | struct position posit; |
5293 | int original_vpos; | |
5294 | ||
d4e7cf01 GM |
5295 | /* If scrolling screen-fulls, compute the number of lines to |
5296 | scroll from the window's height. */ | |
5297 | if (whole) | |
5298 | n *= max (1, ht - next_screen_context_lines); | |
5299 | ||
101d1605 RS |
5300 | startpos = marker_position (w->start); |
5301 | ||
5302 | posit = *compute_motion (startpos, 0, 0, 0, | |
5303 | PT, ht, 0, | |
ec2b66c4 | 5304 | -1, XINT (w->hscroll), |
101d1605 RS |
5305 | 0, w); |
5306 | original_vpos = posit.vpos; | |
0a1f771a | 5307 | |
d834a2e9 | 5308 | XSETFASTINT (tem, PT); |
6ffdb539 | 5309 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 5310 | |
265a9e55 | 5311 | if (NILP (tem)) |
7ab12479 | 5312 | { |
cd2be1dd | 5313 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 5314 | startpos = PT; |
7ab12479 JB |
5315 | } |
5316 | ||
345d45b2 | 5317 | SET_PT (startpos); |
5ce7b543 | 5318 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 5319 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 5320 | pos = PT; |
b73ea88e | 5321 | pos_byte = PT_BYTE; |
7ab12479 | 5322 | bolp = Fbolp (); |
b73ea88e | 5323 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
5324 | |
5325 | if (lose) | |
f8026fd8 JB |
5326 | { |
5327 | if (noerror) | |
5328 | return; | |
5329 | else | |
ba96a5cf | 5330 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 5331 | } |
7ab12479 JB |
5332 | |
5333 | if (pos < ZV) | |
7ab12479 | 5334 | { |
0c7da84e RS |
5335 | int this_scroll_margin = scroll_margin; |
5336 | ||
5337 | /* Don't use a scroll margin that is negative or too large. */ | |
5338 | if (this_scroll_margin < 0) | |
5339 | this_scroll_margin = 0; | |
5340 | ||
949cf20f KS |
5341 | if (XINT (w->total_lines) < 4 * scroll_margin) |
5342 | this_scroll_margin = XINT (w->total_lines) / 4; | |
0c7da84e | 5343 | |
b73ea88e | 5344 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
5345 | w->start_at_line_beg = bolp; |
5346 | w->update_mode_line = Qt; | |
d834a2e9 | 5347 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 5348 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
5349 | /* Set force_start so that redisplay_window will run |
5350 | the window-scroll-functions. */ | |
5351 | w->force_start = Qt; | |
0c7da84e | 5352 | |
bdf4ec93 RS |
5353 | if (!NILP (Vscroll_preserve_screen_position) |
5354 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 5355 | { |
b73ea88e | 5356 | SET_PT_BOTH (pos, pos_byte); |
101d1605 | 5357 | Fvertical_motion (make_number (original_vpos), window); |
0c7da84e | 5358 | } |
101d1605 RS |
5359 | /* If we scrolled forward, put point enough lines down |
5360 | that it is outside the scroll margin. */ | |
5361 | else if (n > 0) | |
0c7da84e | 5362 | { |
101d1605 RS |
5363 | int top_margin; |
5364 | ||
5365 | if (this_scroll_margin > 0) | |
5366 | { | |
b73ea88e | 5367 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
5368 | Fvertical_motion (make_number (this_scroll_margin), window); |
5369 | top_margin = PT; | |
5370 | } | |
5371 | else | |
5372 | top_margin = pos; | |
5373 | ||
5374 | if (top_margin <= opoint) | |
b73ea88e | 5375 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 5376 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 5377 | { |
b73ea88e | 5378 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
5379 | Fvertical_motion (make_number (original_vpos), window); |
5380 | } | |
9317a85d | 5381 | else |
335406fc | 5382 | SET_PT (top_margin); |
0c7da84e | 5383 | } |
101d1605 | 5384 | else if (n < 0) |
7ab12479 | 5385 | { |
101d1605 RS |
5386 | int bottom_margin; |
5387 | ||
0c7da84e RS |
5388 | /* If we scrolled backward, put point near the end of the window |
5389 | but not within the scroll margin. */ | |
b73ea88e | 5390 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 5391 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
5392 | if (XFASTINT (tem) == ht - this_scroll_margin) |
5393 | bottom_margin = PT; | |
5394 | else | |
5395 | bottom_margin = PT + 1; | |
5396 | ||
5397 | if (bottom_margin > opoint) | |
b73ea88e | 5398 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 5399 | else |
101d1605 | 5400 | { |
5500c422 | 5401 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 5402 | { |
b73ea88e | 5403 | SET_PT_BOTH (pos, pos_byte); |
9317a85d RS |
5404 | Fvertical_motion (make_number (original_vpos), window); |
5405 | } | |
5406 | else | |
5407 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 5408 | } |
7ab12479 JB |
5409 | } |
5410 | } | |
5411 | else | |
f8026fd8 JB |
5412 | { |
5413 | if (noerror) | |
5414 | return; | |
5415 | else | |
ba96a5cf | 5416 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 5417 | } |
7ab12479 | 5418 | } |
5500c422 GM |
5419 | |
5420 | ||
5421 | /* Scroll selected_window up or down. If N is nil, scroll a | |
5422 | screen-full which is defined as the height of the window minus | |
5423 | next_screen_context_lines. If N is the symbol `-', scroll. | |
5424 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
5425 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
5426 | |
5427 | static void | |
5428 | scroll_command (n, direction) | |
5500c422 | 5429 | Lisp_Object n; |
7ab12479 JB |
5430 | int direction; |
5431 | { | |
331379bf | 5432 | int count = SPECPDL_INDEX (); |
7ab12479 | 5433 | |
5500c422 GM |
5434 | xassert (abs (direction) == 1); |
5435 | ||
5436 | /* If selected window's buffer isn't current, make it current for | |
5437 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 5438 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
5439 | { |
5440 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5441 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
5442 | |
5443 | /* Make redisplay consider other windows than just selected_window. */ | |
5444 | ++windows_or_buffers_changed; | |
95605e15 | 5445 | } |
7ab12479 | 5446 | |
265a9e55 | 5447 | if (NILP (n)) |
d4e7cf01 | 5448 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 5449 | else if (EQ (n, Qminus)) |
d4e7cf01 | 5450 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
5451 | else |
5452 | { | |
5453 | n = Fprefix_numeric_value (n); | |
101d1605 | 5454 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 5455 | } |
95605e15 JB |
5456 | |
5457 | unbind_to (count, Qnil); | |
7ab12479 JB |
5458 | } |
5459 | ||
5460 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
a0a37a6f LT |
5461 | doc: /* Scroll text of current window upward ARG lines. |
5462 | If ARG is omitted or nil, scroll upward by a near full screen. | |
fdb82f93 PJ |
5463 | A near full screen is `next-screen-context-lines' less than a full screen. |
5464 | Negative ARG means scroll downward. | |
5465 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5466 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5467 | (arg) | |
413430c5 | 5468 | Lisp_Object arg; |
7ab12479 | 5469 | { |
413430c5 | 5470 | scroll_command (arg, 1); |
7ab12479 JB |
5471 | return Qnil; |
5472 | } | |
5473 | ||
5474 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
a0a37a6f LT |
5475 | doc: /* Scroll text of current window down ARG lines. |
5476 | If ARG is omitted or nil, scroll down by a near full screen. | |
fdb82f93 PJ |
5477 | A near full screen is `next-screen-context-lines' less than a full screen. |
5478 | Negative ARG means scroll upward. | |
5479 | If ARG is the atom `-', scroll upward by nearly full screen. | |
5480 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5481 | (arg) | |
413430c5 | 5482 | Lisp_Object arg; |
7ab12479 | 5483 | { |
413430c5 | 5484 | scroll_command (arg, -1); |
7ab12479 JB |
5485 | return Qnil; |
5486 | } | |
ccd0664b RS |
5487 | \f |
5488 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 5489 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 5490 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
5491 | showing that buffer is used. |
5492 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5493 | specifies the window. This takes precedence over | |
5494 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5495 | () |
7ab12479 | 5496 | { |
ccd0664b | 5497 | Lisp_Object window; |
7ab12479 JB |
5498 | |
5499 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 5500 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
5501 | window = Vminibuf_scroll_window; |
5502 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 5503 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
5504 | { |
5505 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 5506 | if (NILP (window)) |
53f76081 | 5507 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
5508 | } |
5509 | else | |
dbc4e1c1 JB |
5510 | { |
5511 | /* Nothing specified; look for a neighboring window on the same | |
5512 | frame. */ | |
5513 | window = Fnext_window (selected_window, Qnil, Qnil); | |
5514 | ||
5515 | if (EQ (window, selected_window)) | |
5516 | /* That didn't get us anywhere; look for a window on another | |
5517 | visible frame. */ | |
5518 | do | |
5519 | window = Fnext_window (window, Qnil, Qt); | |
5520 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
5521 | && ! EQ (window, selected_window)); | |
5522 | } | |
5523 | ||
b7826503 | 5524 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
5525 | |
5526 | if (EQ (window, selected_window)) | |
5527 | error ("There is no other window"); | |
5528 | ||
ccd0664b RS |
5529 | return window; |
5530 | } | |
5531 | ||
5532 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
5533 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
5534 | A near full screen is `next-screen-context-lines' less than a full screen. | |
5535 | The next window is the one below the current one; or the one at the top | |
5536 | if the current one is at the bottom. Negative ARG means scroll downward. | |
5537 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5538 | When calling from a program, supply as argument a number, nil, or `-'. | |
5539 | ||
fdb82f93 | 5540 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5541 | showing that buffer, popping the buffer up if necessary. |
5542 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5543 | specifies the window to scroll. This takes precedence over | |
5544 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5545 | (arg) |
d4e7cf01 | 5546 | Lisp_Object arg; |
ccd0664b | 5547 | { |
d4e7cf01 GM |
5548 | Lisp_Object window; |
5549 | struct window *w; | |
331379bf | 5550 | int count = SPECPDL_INDEX (); |
ccd0664b RS |
5551 | |
5552 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5553 | w = XWINDOW (window); |
7ab12479 JB |
5554 | |
5555 | /* Don't screw up if window_scroll gets an error. */ | |
5556 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5557 | ++windows_or_buffers_changed; |
7ab12479 JB |
5558 | |
5559 | Fset_buffer (w->buffer); | |
5560 | SET_PT (marker_position (w->pointm)); | |
5561 | ||
413430c5 | 5562 | if (NILP (arg)) |
d4e7cf01 | 5563 | window_scroll (window, 1, 1, 1); |
413430c5 | 5564 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5565 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5566 | else |
5567 | { | |
413430c5 EN |
5568 | if (CONSP (arg)) |
5569 | arg = Fcar (arg); | |
b7826503 | 5570 | CHECK_NUMBER (arg); |
101d1605 | 5571 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5572 | } |
5573 | ||
b73ea88e | 5574 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5575 | unbind_to (count, Qnil); |
7ab12479 JB |
5576 | |
5577 | return Qnil; | |
5578 | } | |
5579 | \f | |
dc297565 | 5580 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "P\np", |
fdb82f93 | 5581 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5582 | Default for ARG is window width minus 2. |
5583 | Value is the total amount of leftward horizontal scrolling in | |
5584 | effect after the change. | |
dc297565 RS |
5585 | If SET_MINIMUM is non-nil, the new scroll amount becomes the |
5586 | lower bound for automatic scrolling, i.e. automatic scrolling | |
2fe41216 | 5587 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5588 | by this function. This happens in an interactive call. */) |
5589 | (arg, set_minimum) | |
5590 | register Lisp_Object arg, set_minimum; | |
7ab12479 | 5591 | { |
c67fa410 GM |
5592 | Lisp_Object result; |
5593 | int hscroll; | |
5594 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5595 | |
265a9e55 | 5596 | if (NILP (arg)) |
949cf20f | 5597 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5598 | else |
5599 | arg = Fprefix_numeric_value (arg); | |
5600 | ||
c67fa410 GM |
5601 | hscroll = XINT (w->hscroll) + XINT (arg); |
5602 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
5603 | ||
dc297565 | 5604 | if (!NILP (set_minimum)) |
c67fa410 GM |
5605 | w->min_hscroll = w->hscroll; |
5606 | ||
5607 | return result; | |
7ab12479 JB |
5608 | } |
5609 | ||
dc297565 | 5610 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "P\np", |
fdb82f93 | 5611 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5612 | Default for ARG is window width minus 2. |
5613 | Value is the total amount of leftward horizontal scrolling in | |
5614 | effect after the change. | |
dc297565 RS |
5615 | If SET_MINIMUM is non-nil, the new scroll amount becomes the |
5616 | lower bound for automatic scrolling, i.e. automatic scrolling | |
2fe41216 | 5617 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5618 | by this function. This happens in an interactive call. */) |
5619 | (arg, set_minimum) | |
a93563fd | 5620 | register Lisp_Object arg, set_minimum; |
7ab12479 | 5621 | { |
c67fa410 GM |
5622 | Lisp_Object result; |
5623 | int hscroll; | |
5624 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5625 | |
265a9e55 | 5626 | if (NILP (arg)) |
949cf20f | 5627 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5628 | else |
5629 | arg = Fprefix_numeric_value (arg); | |
5630 | ||
c67fa410 GM |
5631 | hscroll = XINT (w->hscroll) - XINT (arg); |
5632 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
177c0ea7 | 5633 | |
dc297565 | 5634 | if (!NILP (set_minimum)) |
c67fa410 GM |
5635 | w->min_hscroll = w->hscroll; |
5636 | ||
5637 | return result; | |
7ab12479 JB |
5638 | } |
5639 | ||
fa832261 KS |
5640 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5641 | doc: /* Return the window which was selected when entering the minibuffer. | |
5642 | Returns nil, if current window is not a minibuffer window. */) | |
5643 | () | |
5644 | { | |
5645 | if (minibuf_level > 0 | |
5646 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5647 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5648 | return minibuf_selected_window; | |
5649 | ||
5650 | return Qnil; | |
5651 | } | |
5652 | ||
12c8b416 GM |
5653 | /* Value is the number of lines actually displayed in window W, |
5654 | as opposed to its height. */ | |
5655 | ||
5656 | static int | |
5657 | displayed_window_lines (w) | |
5658 | struct window *w; | |
5659 | { | |
5660 | struct it it; | |
5661 | struct text_pos start; | |
5662 | int height = window_box_height (w); | |
5663 | struct buffer *old_buffer; | |
5664 | int bottom_y; | |
5665 | ||
5666 | if (XBUFFER (w->buffer) != current_buffer) | |
5667 | { | |
5668 | old_buffer = current_buffer; | |
5669 | set_buffer_internal (XBUFFER (w->buffer)); | |
5670 | } | |
5671 | else | |
5672 | old_buffer = NULL; | |
5673 | ||
521b203e GM |
5674 | /* In case W->start is out of the accessible range, do something |
5675 | reasonable. This happens in Info mode when Info-scroll-down | |
5676 | calls (recenter -1) while W->start is 1. */ | |
5677 | if (XMARKER (w->start)->charpos < BEGV) | |
5678 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
5679 | else if (XMARKER (w->start)->charpos > ZV) | |
5680 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
5681 | else | |
5682 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5683 | ||
12c8b416 GM |
5684 | start_display (&it, w, start); |
5685 | move_it_vertically (&it, height); | |
c8bc6f65 | 5686 | bottom_y = line_bottom_y (&it); |
12c8b416 | 5687 | |
1de65f51 RS |
5688 | /* rms: On a non-window display, |
5689 | the value of it.vpos at the bottom of the screen | |
5690 | seems to be 1 larger than window_box_height (w). | |
5691 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5692 | when ZV is on the last screen line | |
5693 | moves to the previous screen line instead of the last one. */ | |
5694 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) | |
5695 | height++; | |
5696 | ||
12c8b416 GM |
5697 | /* Add in empty lines at the bottom of the window. */ |
5698 | if (bottom_y < height) | |
5699 | { | |
949cf20f | 5700 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5701 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5702 | } |
5703 | ||
c8bc6f65 GM |
5704 | if (old_buffer) |
5705 | set_buffer_internal (old_buffer); | |
5706 | ||
12c8b416 GM |
5707 | return it.vpos; |
5708 | } | |
5709 | ||
5710 | ||
7ab12479 | 5711 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
fdb82f93 PJ |
5712 | doc: /* Center point in window and redisplay frame. |
5713 | With prefix argument ARG, recenter putting point on screen line ARG | |
5714 | relative to the current window. If ARG is negative, it counts up from the | |
5715 | bottom of the window. (ARG should be less than the height of the window.) | |
5716 | ||
5717 | If ARG is omitted or nil, erase the entire frame and then | |
5718 | redraw with point in the center of the current window. | |
5719 | Just C-u as prefix means put point in the center of the window | |
5720 | and redisplay normally--don't erase and redraw the frame. */) | |
5721 | (arg) | |
413430c5 | 5722 | register Lisp_Object arg; |
7ab12479 | 5723 | { |
6df47b59 | 5724 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
5725 | struct buffer *buf = XBUFFER (w->buffer); |
5726 | struct buffer *obuf = current_buffer; | |
6df47b59 GM |
5727 | int center_p = 0; |
5728 | int charpos, bytepos; | |
f6b43440 RS |
5729 | int iarg; |
5730 | int this_scroll_margin; | |
7ab12479 | 5731 | |
0fa5d25b RS |
5732 | /* If redisplay is suppressed due to an error, try again. */ |
5733 | obuf->display_error_modiff = 0; | |
5734 | ||
413430c5 | 5735 | if (NILP (arg)) |
7ab12479 | 5736 | { |
f02d6d5c KH |
5737 | int i; |
5738 | ||
5739 | /* Invalidate pixel data calculated for all compositions. */ | |
5740 | for (i = 0; i < n_compositions; i++) | |
5741 | composition_table[i]->font = NULL; | |
7ab12479 | 5742 | |
527b6458 | 5743 | Fredraw_frame (w->frame); |
44fa5b1e | 5744 | SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w))); |
6df47b59 | 5745 | center_p = 1; |
7ab12479 | 5746 | } |
413430c5 | 5747 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5748 | center_p = 1; |
7ab12479 JB |
5749 | else |
5750 | { | |
413430c5 | 5751 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5752 | CHECK_NUMBER (arg); |
ae12ecd7 | 5753 | iarg = XINT (arg); |
7ab12479 JB |
5754 | } |
5755 | ||
478292ed | 5756 | set_buffer_internal (buf); |
7ab12479 | 5757 | |
f6b43440 RS |
5758 | /* Do this after making BUF current |
5759 | in case scroll_margin is buffer-local. */ | |
5760 | this_scroll_margin = max (0, scroll_margin); | |
5761 | this_scroll_margin = min (this_scroll_margin, | |
5762 | XFASTINT (w->total_lines) / 4); | |
5763 | ||
521b203e | 5764 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5765 | have variable-height lines and centering point on the basis of |
5766 | line counts would lead to strange effects. */ | |
521b203e | 5767 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5768 | { |
6df47b59 GM |
5769 | if (center_p) |
5770 | { | |
521b203e GM |
5771 | struct it it; |
5772 | struct text_pos pt; | |
177c0ea7 | 5773 | |
521b203e GM |
5774 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5775 | start_display (&it, w, pt); | |
f204989e | 5776 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5777 | charpos = IT_CHARPOS (it); |
5778 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5779 | } |
f6b43440 | 5780 | else if (iarg < 0) |
6df47b59 | 5781 | { |
521b203e GM |
5782 | struct it it; |
5783 | struct text_pos pt; | |
f6b43440 | 5784 | int nlines = -iarg; |
f204989e KS |
5785 | int extra_line_spacing; |
5786 | int h = window_box_height (w); | |
177c0ea7 | 5787 | |
f6b43440 RS |
5788 | iarg = - max (-iarg, this_scroll_margin); |
5789 | ||
521b203e GM |
5790 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5791 | start_display (&it, w, pt); | |
f204989e KS |
5792 | |
5793 | /* Be sure we have the exact height of the full line containing PT. */ | |
5794 | move_it_by_lines (&it, 0, 1); | |
521b203e | 5795 | |
d466fa4d | 5796 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5797 | height minus what's displayed in the line containing PT, |
5798 | and the lines below. */ | |
f204989e KS |
5799 | it.current_y = 0; |
5800 | it.vpos = 0; | |
d466fa4d GM |
5801 | move_it_by_lines (&it, nlines, 1); |
5802 | ||
f204989e KS |
5803 | if (it.vpos == nlines) |
5804 | h -= it.current_y; | |
5805 | else | |
5806 | { | |
5807 | /* Last line has no newline */ | |
5808 | h -= line_bottom_y (&it); | |
5809 | it.vpos++; | |
5810 | } | |
5811 | ||
5812 | /* Don't reserve space for extra line spacing of last line. */ | |
5813 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5814 | |
5815 | /* If we can't move down NLINES lines because we hit | |
5816 | the end of the buffer, count in some empty lines. */ | |
5817 | if (it.vpos < nlines) | |
f204989e KS |
5818 | { |
5819 | nlines -= it.vpos; | |
5820 | extra_line_spacing = it.extra_line_spacing; | |
5821 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5822 | } | |
5823 | if (h <= 0) | |
5824 | return Qnil; | |
201c831a | 5825 | |
f204989e | 5826 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5827 | start_display (&it, w, pt); |
f204989e KS |
5828 | it.current_y = 0; |
5829 | move_it_vertically_backward (&it, h); | |
5830 | ||
5831 | /* If extra line spacing is present, we may move too far | |
5832 | back. This causes the last line to be only partially | |
5833 | visible (which triggers redisplay to recenter that line | |
5834 | in the middle), so move forward. | |
5835 | But ignore extra line spacing on last line, as it is not | |
5836 | considered to be part of the visible height of the line. | |
5837 | */ | |
5838 | h += extra_line_spacing; | |
5839 | while (-it.current_y > h) | |
5840 | move_it_by_lines (&it, 1, 1); | |
5841 | ||
521b203e GM |
5842 | charpos = IT_CHARPOS (it); |
5843 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5844 | } |
521b203e GM |
5845 | else |
5846 | { | |
5847 | struct position pos; | |
f6b43440 | 5848 | |
f6b43440 RS |
5849 | iarg = max (iarg, this_scroll_margin); |
5850 | ||
5851 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5852 | charpos = pos.bufpos; |
5853 | bytepos = pos.bytepos; | |
5854 | } | |
5855 | } | |
5856 | else | |
5857 | { | |
5858 | struct position pos; | |
5859 | int ht = window_internal_height (w); | |
5860 | ||
5861 | if (center_p) | |
a4429c5b | 5862 | iarg = ht / 2; |
f567c488 KS |
5863 | else if (iarg < 0) |
5864 | iarg += ht; | |
f6b43440 RS |
5865 | |
5866 | /* Don't let it get into the margin at either top or bottom. */ | |
5867 | iarg = max (iarg, this_scroll_margin); | |
5868 | iarg = min (iarg, ht - this_scroll_margin - 1); | |
177c0ea7 | 5869 | |
f6b43440 | 5870 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
5871 | charpos = pos.bufpos; |
5872 | bytepos = pos.bytepos; | |
5873 | } | |
5874 | ||
5875 | /* Set the new window start. */ | |
5876 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 5877 | w->window_end_valid = Qnil; |
177c0ea7 | 5878 | |
95605b1b RS |
5879 | w->optional_new_start = Qt; |
5880 | ||
6df47b59 GM |
5881 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
5882 | w->start_at_line_beg = Qt; | |
5883 | else | |
5884 | w->start_at_line_beg = Qnil; | |
177c0ea7 | 5885 | |
478292ed | 5886 | set_buffer_internal (obuf); |
7ab12479 JB |
5887 | return Qnil; |
5888 | } | |
b7617575 GM |
5889 | |
5890 | ||
81fe0836 | 5891 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5892 | 0, 1, 0, |
5893 | doc: /* Return the height in lines of the text display area of WINDOW. | |
5894 | This doesn't include the mode-line (or header-line if any) or any | |
5895 | partial-height lines in the text display area. */) | |
5896 | (window) | |
81fe0836 MB |
5897 | Lisp_Object window; |
5898 | { | |
5899 | struct window *w = decode_window (window); | |
5900 | int pixel_height = window_box_height (w); | |
949cf20f | 5901 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5902 | return make_number (line_height); |
5903 | } | |
5904 | ||
5905 | ||
7ab12479 JB |
5906 | \f |
5907 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5908 | 1, 1, "P", |
5909 | doc: /* Position point relative to window. | |
5910 | With no argument, position point at center of window. | |
5911 | An argument specifies vertical position within the window; | |
5912 | zero means top of window, negative means relative to bottom of window. */) | |
5913 | (arg) | |
b7617575 | 5914 | Lisp_Object arg; |
7ab12479 | 5915 | { |
b7617575 GM |
5916 | struct window *w = XWINDOW (selected_window); |
5917 | int lines, start; | |
540b6aa0 | 5918 | Lisp_Object window; |
f6b43440 RS |
5919 | #if 0 |
5920 | int this_scroll_margin; | |
5921 | #endif | |
7ab12479 | 5922 | |
b7617575 | 5923 | window = selected_window; |
7ab12479 JB |
5924 | start = marker_position (w->start); |
5925 | if (start < BEGV || start > ZV) | |
5926 | { | |
b7617575 | 5927 | int height = window_internal_height (w); |
cd2be1dd | 5928 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 5929 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
5930 | w->start_at_line_beg = Fbolp (); |
5931 | w->force_start = Qt; | |
5932 | } | |
5933 | else | |
b73ea88e | 5934 | Fgoto_char (w->start); |
7ab12479 | 5935 | |
b7617575 | 5936 | lines = displayed_window_lines (w); |
f6b43440 RS |
5937 | |
5938 | #if 0 | |
5939 | this_scroll_margin = max (0, scroll_margin); | |
5940 | this_scroll_margin = min (this_scroll_margin, lines / 4); | |
5941 | #endif | |
5942 | ||
b7617575 GM |
5943 | if (NILP (arg)) |
5944 | XSETFASTINT (arg, lines / 2); | |
5945 | else | |
5946 | { | |
f6b43440 RS |
5947 | int iarg = XINT (Fprefix_numeric_value (arg)); |
5948 | ||
5949 | if (iarg < 0) | |
5950 | iarg = iarg + lines; | |
5951 | ||
5952 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5953 | to a place inside the scroll margins (which would cause the | |
5954 | next redisplay to scroll). I wrote this code, but then concluded | |
5955 | it is probably better not to install it. However, it is here | |
5956 | inside #if 0 so as not to lose it. -- rms. */ | |
5957 | ||
5958 | /* Don't let it get into the margin at either top or bottom. */ | |
5959 | iarg = max (iarg, this_scroll_margin); | |
5960 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5961 | #endif | |
5962 | ||
5963 | arg = make_number (iarg); | |
b7617575 GM |
5964 | } |
5965 | ||
c8bc6f65 | 5966 | /* Skip past a partially visible first line. */ |
163784df | 5967 | if (w->vscroll) |
163784df MB |
5968 | XSETINT (arg, XINT (arg) + 1); |
5969 | ||
540b6aa0 | 5970 | return Fvertical_motion (arg, window); |
7ab12479 | 5971 | } |
5500c422 GM |
5972 | |
5973 | ||
7ab12479 | 5974 | \f |
5500c422 GM |
5975 | /*********************************************************************** |
5976 | Window Configuration | |
5977 | ***********************************************************************/ | |
5978 | ||
7ab12479 JB |
5979 | struct save_window_data |
5980 | { | |
f5ccc0cc | 5981 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 | 5982 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
949cf20f | 5983 | Lisp_Object frame_cols, frame_lines, frame_menu_bar_lines; |
9ea173e8 | 5984 | Lisp_Object frame_tool_bar_lines; |
bdc727bf | 5985 | Lisp_Object selected_frame; |
7ab12479 JB |
5986 | Lisp_Object current_window; |
5987 | Lisp_Object current_buffer; | |
5988 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5989 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5990 | Lisp_Object root_window; |
bdc727bf | 5991 | Lisp_Object focus_frame; |
756b6edc RS |
5992 | /* Record the values of window-min-width and window-min-height |
5993 | so that window sizes remain consistent with them. */ | |
5994 | Lisp_Object min_width, min_height; | |
cbff28e8 RS |
5995 | /* A vector, each of whose elements is a struct saved_window |
5996 | for one window. */ | |
7ab12479 JB |
5997 | Lisp_Object saved_windows; |
5998 | }; | |
ff06df24 | 5999 | |
cbff28e8 | 6000 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 6001 | struct saved_window |
ea68264b GM |
6002 | { |
6003 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
6004 | EMACS_INT size_from_Lisp_Vector_struct; | |
6005 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
7ab12479 | 6006 | |
ea68264b GM |
6007 | Lisp_Object window; |
6008 | Lisp_Object buffer, start, pointm, mark; | |
949cf20f KS |
6009 | Lisp_Object left_col, top_line, total_cols, total_lines; |
6010 | Lisp_Object hscroll, min_hscroll; | |
ea68264b GM |
6011 | Lisp_Object parent, prev; |
6012 | Lisp_Object start_at_line_beg; | |
6013 | Lisp_Object display_table; | |
949cf20f KS |
6014 | Lisp_Object orig_top_line, orig_total_lines; |
6015 | Lisp_Object left_margin_cols, right_margin_cols; | |
6016 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
6017 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type; | |
6ad0381c | 6018 | Lisp_Object dedicated; |
ea68264b GM |
6019 | }; |
6020 | ||
7ab12479 JB |
6021 | #define SAVED_WINDOW_N(swv,n) \ |
6022 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
6023 | ||
6024 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 PJ |
6025 | doc: /* Return t if OBJECT is a window-configuration object. */) |
6026 | (object) | |
413430c5 | 6027 | Lisp_Object object; |
7ab12479 | 6028 | { |
6ad0381c | 6029 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
6030 | } |
6031 | ||
3f8ab7bd | 6032 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 PJ |
6033 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
6034 | (config) | |
3f8ab7bd RS |
6035 | Lisp_Object config; |
6036 | { | |
6037 | register struct save_window_data *data; | |
6038 | struct Lisp_Vector *saved_windows; | |
6039 | ||
663fbbba | 6040 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
6041 | |
6042 | data = (struct save_window_data *) XVECTOR (config); | |
6043 | saved_windows = XVECTOR (data->saved_windows); | |
6044 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
6045 | } | |
6046 | ||
d5b2799e | 6047 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
6048 | Sset_window_configuration, 1, 1, 0, |
6049 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
6050 | CONFIGURATION must be a value previously returned | |
6051 | by `current-window-configuration' (which see). | |
6052 | If CONFIGURATION was made from a frame that is now deleted, | |
6053 | only frame-independent values can be restored. In this case, | |
6054 | the return value is nil. Otherwise the value is t. */) | |
6055 | (configuration) | |
2f83aebe | 6056 | Lisp_Object configuration; |
7ab12479 | 6057 | { |
7ab12479 JB |
6058 | register struct save_window_data *data; |
6059 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 6060 | Lisp_Object new_current_buffer; |
fd482be5 | 6061 | Lisp_Object frame; |
44fa5b1e | 6062 | FRAME_PTR f; |
72695e47 | 6063 | int old_point = -1; |
7ab12479 | 6064 | |
663fbbba | 6065 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 6066 | |
2f83aebe | 6067 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
6068 | saved_windows = XVECTOR (data->saved_windows); |
6069 | ||
7ab12479 | 6070 | new_current_buffer = data->current_buffer; |
265a9e55 | 6071 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 6072 | new_current_buffer = Qnil; |
72695e47 | 6073 | else |
73cadfc1 DK |
6074 | { |
6075 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
6076 | /* The code further down "preserves point" by saving here PT in |
6077 | old_point and then setting it later back into PT. When the | |
6078 | current-selected-window and the final-selected-window both show | |
6079 | the current buffer, this suffers from the problem that the | |
6080 | current PT is the window-point of the current-selected-window, | |
6081 | while the final PT is the point of the final-selected-window, so | |
6082 | this copy from one PT to the other would end up moving the | |
6083 | window-point of the final-selected-window to the window-point of | |
6084 | the current-selected-window. So we have to be careful which | |
6085 | point of the current-buffer we copy into old_point. */ | |
6086 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
6087 | && WINDOWP (selected_window) | |
6088 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) | |
6089 | && !EQ (selected_window, data->current_window)) | |
6090 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
6091 | else | |
6092 | old_point = PT; | |
73cadfc1 | 6093 | else |
203eb0aa SM |
6094 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
6095 | point in new_current_buffer as of the last time this buffer was | |
6096 | used. This can be non-deterministic since it can be changed by | |
6097 | things like jit-lock by mere temporary selection of some random | |
6098 | window that happens to show this buffer. | |
6099 | So if possible we want this arbitrary choice of "which point" to | |
6100 | be the one from the to-be-selected-window so as to prevent this | |
6101 | window's cursor from being copied from another window. */ | |
6102 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
6103 | /* If current_window = selected_window, its point is in BUF_PT. */ | |
6104 | && !EQ (selected_window, data->current_window)) | |
6105 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
6106 | else | |
6107 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 6108 | } |
7ab12479 | 6109 | |
fd482be5 JB |
6110 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
6111 | f = XFRAME (frame); | |
177c0ea7 | 6112 | |
fd482be5 JB |
6113 | /* If f is a dead frame, don't bother rebuilding its window tree. |
6114 | However, there is other stuff we should still try to do below. */ | |
6115 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 6116 | { |
fd482be5 JB |
6117 | register struct window *w; |
6118 | register struct saved_window *p; | |
5500c422 GM |
6119 | struct window *root_window; |
6120 | struct window **leaf_windows; | |
6121 | int n_leaf_windows; | |
c4280705 | 6122 | int k, i, n; |
fd482be5 JB |
6123 | |
6124 | /* If the frame has been resized since this window configuration was | |
6125 | made, we change the frame to the size specified in the | |
6126 | configuration, restore the configuration, and then resize it | |
6127 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
6128 | int previous_frame_lines = FRAME_LINES (f); |
6129 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 6130 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 6131 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 6132 | |
d2b35234 RS |
6133 | /* The mouse highlighting code could get screwed up |
6134 | if it runs during this. */ | |
6135 | BLOCK_INPUT; | |
6136 | ||
949cf20f KS |
6137 | if (XFASTINT (data->frame_lines) != previous_frame_lines |
6138 | || XFASTINT (data->frame_cols) != previous_frame_cols) | |
6139 | change_frame_size (f, XFASTINT (data->frame_lines), | |
6140 | XFASTINT (data->frame_cols), 0, 0, 0); | |
e3678b64 | 6141 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
6142 | if (XFASTINT (data->frame_menu_bar_lines) |
6143 | != previous_frame_menu_bar_lines) | |
f8ad443a | 6144 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, make_number (0)); |
4314246f | 6145 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
6146 | if (XFASTINT (data->frame_tool_bar_lines) |
6147 | != previous_frame_tool_bar_lines) | |
6148 | x_set_tool_bar_lines (f, data->frame_tool_bar_lines, make_number (0)); | |
4314246f | 6149 | #endif |
217f2871 | 6150 | #endif |
fd482be5 | 6151 | |
a46c0153 RS |
6152 | /* "Swap out" point from the selected window's buffer |
6153 | into the window itself. (Normally the pointm of the selected | |
6154 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
6155 | restoring the window contents, and prevent it from |
6156 | being done later on when we select a new window. */ | |
596ae0cf RS |
6157 | if (! NILP (XWINDOW (selected_window)->buffer)) |
6158 | { | |
6159 | w = XWINDOW (selected_window); | |
6160 | set_marker_both (w->pointm, | |
6161 | w->buffer, | |
6162 | BUF_PT (XBUFFER (w->buffer)), | |
6163 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
6164 | } | |
6165 | ||
fd482be5 | 6166 | windows_or_buffers_changed++; |
29aeee73 | 6167 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 6168 | |
5500c422 | 6169 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 6170 | is a serious redisplay flickering problem. What we would |
5500c422 GM |
6171 | really like to do is to free only those matrices not reused |
6172 | below. */ | |
6173 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
6174 | leaf_windows | |
6175 | = (struct window **) alloca (count_windows (root_window) | |
6176 | * sizeof (struct window *)); | |
6177 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
6178 | ||
756b6edc RS |
6179 | /* Temporarily avoid any problems with windows that are smaller |
6180 | than they are supposed to be. */ | |
6181 | window_min_height = 1; | |
6182 | window_min_width = 1; | |
6183 | ||
fd482be5 JB |
6184 | /* Kludge Alert! |
6185 | Mark all windows now on frame as "deleted". | |
6186 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 6187 | |
fd482be5 JB |
6188 | Save their current buffers in their height fields, since we may |
6189 | need it later, if a buffer saved in the configuration is now | |
6190 | dead. */ | |
6191 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
6192 | ||
6193 | for (k = 0; k < saved_windows->size; k++) | |
6194 | { | |
6195 | p = SAVED_WINDOW_N (saved_windows, k); | |
6196 | w = XWINDOW (p->window); | |
6197 | w->next = Qnil; | |
7ab12479 | 6198 | |
fd482be5 JB |
6199 | if (!NILP (p->parent)) |
6200 | w->parent = SAVED_WINDOW_N (saved_windows, | |
6201 | XFASTINT (p->parent))->window; | |
6202 | else | |
6203 | w->parent = Qnil; | |
7ab12479 | 6204 | |
fd482be5 | 6205 | if (!NILP (p->prev)) |
7ab12479 | 6206 | { |
fd482be5 JB |
6207 | w->prev = SAVED_WINDOW_N (saved_windows, |
6208 | XFASTINT (p->prev))->window; | |
6209 | XWINDOW (w->prev)->next = p->window; | |
6210 | } | |
6211 | else | |
6212 | { | |
6213 | w->prev = Qnil; | |
6214 | if (!NILP (w->parent)) | |
6215 | { | |
949cf20f | 6216 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 JB |
6217 | { |
6218 | XWINDOW (w->parent)->vchild = p->window; | |
6219 | XWINDOW (w->parent)->hchild = Qnil; | |
6220 | } | |
6221 | else | |
6222 | { | |
6223 | XWINDOW (w->parent)->hchild = p->window; | |
6224 | XWINDOW (w->parent)->vchild = Qnil; | |
6225 | } | |
6226 | } | |
6227 | } | |
6228 | ||
6229 | /* If we squirreled away the buffer in the window's height, | |
6230 | restore it now. */ | |
949cf20f KS |
6231 | if (BUFFERP (w->total_lines)) |
6232 | w->buffer = w->total_lines; | |
6233 | w->left_col = p->left_col; | |
6234 | w->top_line = p->top_line; | |
6235 | w->total_cols = p->total_cols; | |
6236 | w->total_lines = p->total_lines; | |
fd482be5 | 6237 | w->hscroll = p->hscroll; |
ea68264b | 6238 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 6239 | w->display_table = p->display_table; |
949cf20f KS |
6240 | w->orig_top_line = p->orig_top_line; |
6241 | w->orig_total_lines = p->orig_total_lines; | |
6242 | w->left_margin_cols = p->left_margin_cols; | |
6243 | w->right_margin_cols = p->right_margin_cols; | |
6244 | w->left_fringe_width = p->left_fringe_width; | |
6245 | w->right_fringe_width = p->right_fringe_width; | |
6246 | w->fringes_outside_margins = p->fringes_outside_margins; | |
6247 | w->scroll_bar_width = p->scroll_bar_width; | |
6248 | w->vertical_scroll_bar_type = p->vertical_scroll_bar_type; | |
6ad0381c | 6249 | w->dedicated = p->dedicated; |
d834a2e9 | 6250 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 6251 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
6252 | |
6253 | /* Reinstall the saved buffer and pointers into it. */ | |
6254 | if (NILP (p->buffer)) | |
6255 | w->buffer = p->buffer; | |
6256 | else | |
6257 | { | |
6258 | if (!NILP (XBUFFER (p->buffer)->name)) | |
6259 | /* If saved buffer is alive, install it. */ | |
6260 | { | |
6261 | w->buffer = p->buffer; | |
6262 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
6263 | set_marker_restricted (w->start, p->start, w->buffer); |
6264 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 6265 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 6266 | p->mark, w->buffer); |
fd482be5 JB |
6267 | |
6268 | /* As documented in Fcurrent_window_configuration, don't | |
243a5ce6 RS |
6269 | restore the location of point in the buffer which was |
6270 | current when the window configuration was recorded. */ | |
6b54027b RS |
6271 | if (!EQ (p->buffer, new_current_buffer) |
6272 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
6273 | Fgoto_char (w->pointm); |
6274 | } | |
52a68e98 RS |
6275 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
6276 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 6277 | { |
fd482be5 JB |
6278 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
6279 | /* This will set the markers to beginning of visible | |
6280 | range. */ | |
6281 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
6282 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
6283 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
6284 | } |
6285 | else | |
fd482be5 | 6286 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 6287 | are real. */ |
7ab12479 | 6288 | { |
fd482be5 JB |
6289 | /* Set window markers at start of visible range. */ |
6290 | if (XMARKER (w->start)->buffer == 0) | |
6291 | set_marker_restricted (w->start, make_number (0), | |
6292 | w->buffer); | |
6293 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
6294 | set_marker_restricted_both (w->pointm, w->buffer, |
6295 | BUF_PT (XBUFFER (w->buffer)), | |
6296 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 6297 | w->start_at_line_beg = Qt; |
7ab12479 JB |
6298 | } |
6299 | } | |
6300 | } | |
9ace597f | 6301 | |
fd482be5 | 6302 | FRAME_ROOT_WINDOW (f) = data->root_window; |
719eaeb1 GM |
6303 | /* Prevent "swapping out point" in the old selected window |
6304 | using the buffer that has been restored into it. | |
a46c0153 | 6305 | We already swapped out point that from that window's old buffer. */ |
719eaeb1 | 6306 | selected_window = Qnil; |
a46c0153 RS |
6307 | |
6308 | /* Arrange *not* to restore point in the buffer that was | |
6309 | current when the window configuration was saved. */ | |
243a5ce6 RS |
6310 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
6311 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 6312 | make_number (old_point), |
243a5ce6 | 6313 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 6314 | |
14d87dc9 | 6315 | Fselect_window (data->current_window, Qnil); |
396a830c RS |
6316 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
6317 | = selected_window; | |
7ab12479 | 6318 | |
db269683 | 6319 | if (NILP (data->focus_frame) |
017b2bad | 6320 | || (FRAMEP (data->focus_frame) |
db269683 JB |
6321 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
6322 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 6323 | |
fd482be5 JB |
6324 | #if 0 /* I don't understand why this is needed, and it causes problems |
6325 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 6326 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 | 6327 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
d12f6f83 | 6328 | 0, 0); |
fd482be5 JB |
6329 | #endif |
6330 | ||
6331 | /* Set the screen height to the value it had before this function. */ | |
949cf20f KS |
6332 | if (previous_frame_lines != FRAME_LINES (f) |
6333 | || previous_frame_cols != FRAME_COLS (f)) | |
6334 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 6335 | 0, 0, 0); |
e3678b64 | 6336 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 6337 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
6338 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
6339 | make_number (0)); | |
4314246f | 6340 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
6341 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
6342 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
6343 | make_number (0)); | |
4314246f | 6344 | #endif |
217f2871 | 6345 | #endif |
d2b35234 | 6346 | |
5500c422 | 6347 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
6348 | for (i = n = 0; i < n_leaf_windows; ++i) |
6349 | { | |
6350 | if (NILP (leaf_windows[i]->buffer)) | |
6351 | { | |
6352 | /* Assert it's not reused as a combination. */ | |
177c0ea7 | 6353 | xassert (NILP (leaf_windows[i]->hchild) |
c4280705 GM |
6354 | && NILP (leaf_windows[i]->vchild)); |
6355 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
6356 | } |
6357 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
6358 | ++n; | |
6359 | } | |
177c0ea7 | 6360 | |
5500c422 GM |
6361 | adjust_glyphs (f); |
6362 | ||
d2b35234 | 6363 | UNBLOCK_INPUT; |
756b6edc | 6364 | |
478292ed RS |
6365 | /* Fselect_window will have made f the selected frame, so we |
6366 | reselect the proper frame here. Fhandle_switch_frame will change the | |
6367 | selected window too, but that doesn't make the call to | |
6368 | Fselect_window above totally superfluous; it still sets f's | |
6369 | selected window. */ | |
6370 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
d12f6f83 | 6371 | do_switch_frame (data->selected_frame, 0, 0); |
478292ed RS |
6372 | |
6373 | if (! NILP (Vwindow_configuration_change_hook) | |
6374 | && ! NILP (Vrun_hooks)) | |
6375 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
6376 | } | |
bdc727bf JB |
6377 | |
6378 | if (!NILP (new_current_buffer)) | |
243a5ce6 | 6379 | Fset_buffer (new_current_buffer); |
bdc727bf | 6380 | |
478292ed RS |
6381 | /* Restore the minimum heights recorded in the configuration. */ |
6382 | window_min_height = XINT (data->min_height); | |
6383 | window_min_width = XINT (data->min_width); | |
543f5fb1 | 6384 | |
478292ed | 6385 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 6386 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 6387 | |
3f8ab7bd | 6388 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
6389 | } |
6390 | ||
44fa5b1e | 6391 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
6392 | by setting their buffers to nil. */ |
6393 | ||
fd482be5 | 6394 | void |
7ab12479 JB |
6395 | delete_all_subwindows (w) |
6396 | register struct window *w; | |
6397 | { | |
265a9e55 | 6398 | if (!NILP (w->next)) |
7ab12479 | 6399 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 6400 | if (!NILP (w->vchild)) |
7ab12479 | 6401 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 6402 | if (!NILP (w->hchild)) |
7ab12479 | 6403 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af | 6404 | |
949cf20f | 6405 | w->total_lines = w->buffer; /* See Fset_window_configuration for excuse. */ |
605be8af | 6406 | |
86e48436 RS |
6407 | if (!NILP (w->buffer)) |
6408 | unshow_buffer (w); | |
6409 | ||
605be8af JB |
6410 | /* We set all three of these fields to nil, to make sure that we can |
6411 | distinguish this dead window from any live window. Live leaf | |
6412 | windows will have buffer set, and combination windows will have | |
6413 | vchild or hchild set. */ | |
6414 | w->buffer = Qnil; | |
6415 | w->vchild = Qnil; | |
6416 | w->hchild = Qnil; | |
acf70840 GM |
6417 | |
6418 | Vwindow_list = Qnil; | |
7ab12479 JB |
6419 | } |
6420 | \f | |
6421 | static int | |
6422 | count_windows (window) | |
6423 | register struct window *window; | |
6424 | { | |
6425 | register int count = 1; | |
265a9e55 | 6426 | if (!NILP (window->next)) |
7ab12479 | 6427 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 6428 | if (!NILP (window->vchild)) |
7ab12479 | 6429 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 6430 | if (!NILP (window->hchild)) |
7ab12479 JB |
6431 | count += count_windows (XWINDOW (window->hchild)); |
6432 | return count; | |
6433 | } | |
6434 | ||
5500c422 | 6435 | |
177c0ea7 | 6436 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 GM |
6437 | Value is last index + 1. */ |
6438 | ||
6439 | static int | |
6440 | get_leaf_windows (w, flat, i) | |
6441 | struct window *w; | |
6442 | struct window **flat; | |
6443 | int i; | |
6444 | { | |
6445 | while (w) | |
6446 | { | |
6447 | if (!NILP (w->hchild)) | |
6448 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
6449 | else if (!NILP (w->vchild)) | |
6450 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 6451 | else |
5500c422 GM |
6452 | flat[i++] = w; |
6453 | ||
6454 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6455 | } | |
6456 | ||
6457 | return i; | |
6458 | } | |
6459 | ||
6460 | ||
6461 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
6462 | null if W's current matrix is invalid, so that no meaningfull glyph | |
6463 | can be returned. */ | |
6464 | ||
6465 | struct glyph * | |
6466 | get_phys_cursor_glyph (w) | |
6467 | struct window *w; | |
6468 | { | |
6469 | struct glyph_row *row; | |
6470 | struct glyph *glyph; | |
6471 | ||
6472 | if (w->phys_cursor.vpos >= 0 | |
6473 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
6474 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
6475 | row->enabled_p) | |
6476 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
6477 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
6478 | else | |
6479 | glyph = NULL; | |
6480 | ||
6481 | return glyph; | |
6482 | } | |
6483 | ||
6484 | ||
7ab12479 JB |
6485 | static int |
6486 | save_window_save (window, vector, i) | |
6487 | Lisp_Object window; | |
6488 | struct Lisp_Vector *vector; | |
6489 | int i; | |
6490 | { | |
6491 | register struct saved_window *p; | |
6492 | register struct window *w; | |
6493 | register Lisp_Object tem; | |
6494 | ||
265a9e55 | 6495 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
6496 | { |
6497 | p = SAVED_WINDOW_N (vector, i); | |
6498 | w = XWINDOW (window); | |
6499 | ||
2a1893f4 | 6500 | XSETFASTINT (w->temslot, i); i++; |
7ab12479 JB |
6501 | p->window = window; |
6502 | p->buffer = w->buffer; | |
949cf20f KS |
6503 | p->left_col = w->left_col; |
6504 | p->top_line = w->top_line; | |
6505 | p->total_cols = w->total_cols; | |
6506 | p->total_lines = w->total_lines; | |
7ab12479 | 6507 | p->hscroll = w->hscroll; |
ea68264b | 6508 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 6509 | p->display_table = w->display_table; |
949cf20f KS |
6510 | p->orig_top_line = w->orig_top_line; |
6511 | p->orig_total_lines = w->orig_total_lines; | |
6512 | p->left_margin_cols = w->left_margin_cols; | |
6513 | p->right_margin_cols = w->right_margin_cols; | |
6514 | p->left_fringe_width = w->left_fringe_width; | |
6515 | p->right_fringe_width = w->right_fringe_width; | |
6516 | p->fringes_outside_margins = w->fringes_outside_margins; | |
6517 | p->scroll_bar_width = w->scroll_bar_width; | |
6518 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6ad0381c | 6519 | p->dedicated = w->dedicated; |
265a9e55 | 6520 | if (!NILP (w->buffer)) |
7ab12479 JB |
6521 | { |
6522 | /* Save w's value of point in the window configuration. | |
6523 | If w is the selected window, then get the value of point | |
6524 | from the buffer; pointm is garbage in the selected window. */ | |
6525 | if (EQ (window, selected_window)) | |
6526 | { | |
6527 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
6528 | set_marker_both (p->pointm, w->buffer, |
6529 | BUF_PT (XBUFFER (w->buffer)), | |
6530 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
6531 | } |
6532 | else | |
eeb82665 | 6533 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 6534 | |
eeb82665 | 6535 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
6536 | p->start_at_line_beg = w->start_at_line_beg; |
6537 | ||
6538 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 6539 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6540 | } |
6541 | else | |
6542 | { | |
6543 | p->pointm = Qnil; | |
6544 | p->start = Qnil; | |
6545 | p->mark = Qnil; | |
6546 | p->start_at_line_beg = Qnil; | |
6547 | } | |
6548 | ||
265a9e55 | 6549 | if (NILP (w->parent)) |
7ab12479 JB |
6550 | p->parent = Qnil; |
6551 | else | |
6552 | p->parent = XWINDOW (w->parent)->temslot; | |
6553 | ||
265a9e55 | 6554 | if (NILP (w->prev)) |
7ab12479 JB |
6555 | p->prev = Qnil; |
6556 | else | |
6557 | p->prev = XWINDOW (w->prev)->temslot; | |
6558 | ||
265a9e55 | 6559 | if (!NILP (w->vchild)) |
7ab12479 | 6560 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 6561 | if (!NILP (w->hchild)) |
7ab12479 JB |
6562 | i = save_window_save (w->hchild, vector, i); |
6563 | } | |
6564 | ||
6565 | return i; | |
6566 | } | |
6567 | ||
a0d76c27 | 6568 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6569 | Scurrent_window_configuration, 0, 1, 0, |
6570 | doc: /* Return an object representing the current window configuration of FRAME. | |
6571 | If FRAME is nil or omitted, use the selected frame. | |
6572 | This describes the number of windows, their sizes and current buffers, | |
6573 | and for each displayed buffer, where display starts, and the positions of | |
6574 | point and mark. An exception is made for point in the current buffer: | |
6575 | its value is -not- saved. | |
6576 | This also records the currently selected frame, and FRAME's focus | |
6577 | redirection (see `redirect-frame-focus'). */) | |
6578 | (frame) | |
44fa5b1e | 6579 | Lisp_Object frame; |
7ab12479 JB |
6580 | { |
6581 | register Lisp_Object tem; | |
6582 | register int n_windows; | |
6583 | register struct save_window_data *data; | |
da2792e0 | 6584 | register struct Lisp_Vector *vec; |
7ab12479 | 6585 | register int i; |
44fa5b1e | 6586 | FRAME_PTR f; |
43bad991 | 6587 | |
44fa5b1e | 6588 | if (NILP (frame)) |
1ae1a37d | 6589 | frame = selected_frame; |
b7826503 | 6590 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 6591 | f = XFRAME (frame); |
7ab12479 | 6592 | |
44fa5b1e | 6593 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
26605be9 | 6594 | vec = allocate_other_vector (VECSIZE (struct save_window_data)); |
da2792e0 KH |
6595 | data = (struct save_window_data *)vec; |
6596 | ||
949cf20f KS |
6597 | XSETFASTINT (data->frame_cols, FRAME_COLS (f)); |
6598 | XSETFASTINT (data->frame_lines, FRAME_LINES (f)); | |
d834a2e9 | 6599 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); |
9ea173e8 | 6600 | XSETFASTINT (data->frame_tool_bar_lines, FRAME_TOOL_BAR_LINES (f)); |
1ae1a37d | 6601 | data->selected_frame = selected_frame; |
44fa5b1e | 6602 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6603 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6604 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6605 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6606 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6607 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
6608 | XSETINT (data->min_height, window_min_height); |
6609 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
6610 | tem = Fmake_vector (make_number (n_windows), Qnil); |
6611 | data->saved_windows = tem; | |
6612 | for (i = 0; i < n_windows; i++) | |
6613 | XVECTOR (tem)->contents[i] | |
8a450f0a | 6614 | = Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil); |
a1d58e5b | 6615 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6616 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6617 | return (tem); |
6618 | } | |
6619 | ||
6620 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
fdb82f93 | 6621 | 0, UNEVALLED, 0, |
a0a37a6f LT |
6622 | doc: /* Execute BODY, preserving window sizes and contents. |
6623 | Return the value of the last form in BODY. | |
fdb82f93 PJ |
6624 | Restore which buffer appears in which window, where display starts, |
6625 | and the value of point and mark for each window. | |
6626 | Also restore the choice of selected window. | |
6627 | Also restore which buffer is current. | |
6924dda6 MB |
6628 | Does not restore the value of point in current buffer. |
6629 | usage: (save-window-excursion BODY ...) */) | |
fdb82f93 | 6630 | (args) |
7ab12479 JB |
6631 | Lisp_Object args; |
6632 | { | |
6633 | register Lisp_Object val; | |
aed13378 | 6634 | register int count = SPECPDL_INDEX (); |
7ab12479 JB |
6635 | |
6636 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 6637 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
6638 | val = Fprogn (args); |
6639 | return unbind_to (count, val); | |
6640 | } | |
5500c422 | 6641 | |
94e16dd5 KS |
6642 | |
6643 | \f | |
6644 | /*********************************************************************** | |
6645 | Window Split Tree | |
6646 | ***********************************************************************/ | |
6647 | ||
6648 | static Lisp_Object | |
c16e1cc3 | 6649 | window_tree (w) |
94e16dd5 KS |
6650 | struct window *w; |
6651 | { | |
6652 | Lisp_Object tail = Qnil; | |
6653 | Lisp_Object result = Qnil; | |
6654 | ||
6655 | while (w) | |
6656 | { | |
6657 | Lisp_Object wn; | |
6658 | ||
6659 | XSETWINDOW (wn, w); | |
6660 | if (!NILP (w->hchild)) | |
6661 | wn = Fcons (Qnil, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6662 | window_tree (XWINDOW (w->hchild)))); |
94e16dd5 KS |
6663 | else if (!NILP (w->vchild)) |
6664 | wn = Fcons (Qt, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6665 | window_tree (XWINDOW (w->vchild)))); |
94e16dd5 KS |
6666 | |
6667 | if (NILP (result)) | |
6668 | { | |
6669 | result = tail = Fcons (wn, Qnil); | |
6670 | } | |
6671 | else | |
6672 | { | |
6673 | XSETCDR (tail, Fcons (wn, Qnil)); | |
6674 | tail = XCDR (tail); | |
6675 | } | |
6676 | ||
6677 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6678 | } | |
6679 | ||
6680 | return result; | |
6681 | } | |
6682 | ||
6683 | ||
6684 | ||
c16e1cc3 | 6685 | DEFUN ("window-tree", Fwindow_tree, Swindow_tree, |
94e16dd5 | 6686 | 0, 1, 0, |
c16e1cc3 | 6687 | doc: /* Return the window tree for frame FRAME. |
94e16dd5 KS |
6688 | |
6689 | The return value is a list of the form (ROOT MINI), where ROOT | |
c16e1cc3 | 6690 | represents the window tree of the frame's root window, and MINI |
94e16dd5 KS |
6691 | is the frame's minibuffer window. |
6692 | ||
6693 | If the root window is not split, ROOT is the root window itself. | |
6694 | Otherwise, ROOT is a list (DIR EDGES W1 W2 ...) where DIR is nil for a | |
008171a4 | 6695 | horizontal split, and t for a vertical split, EDGES gives the combined |
94e16dd5 KS |
6696 | size and position of the subwindows in the split, and the rest of the |
6697 | elements are the subwindows in the split. Each of the subwindows may | |
6698 | again be a window or a list representing a window split, and so on. | |
6699 | EDGES is a list \(LEFT TOP RIGHT BOTTOM) as returned by `window-edges'. | |
6700 | ||
6701 | If FRAME is nil or omitted, return information on the currently | |
6702 | selected frame. */) | |
6703 | (frame) | |
6704 | Lisp_Object frame; | |
6705 | { | |
94e16dd5 KS |
6706 | FRAME_PTR f; |
6707 | ||
6708 | if (NILP (frame)) | |
6709 | frame = selected_frame; | |
6710 | ||
6711 | CHECK_FRAME (frame); | |
6712 | f = XFRAME (frame); | |
6713 | ||
6714 | if (!FRAME_LIVE_P (f)) | |
6715 | return Qnil; | |
6716 | ||
c16e1cc3 | 6717 | return window_tree (XWINDOW (FRAME_ROOT_WINDOW (f))); |
94e16dd5 KS |
6718 | } |
6719 | ||
5500c422 GM |
6720 | \f |
6721 | /*********************************************************************** | |
6722 | Marginal Areas | |
6723 | ***********************************************************************/ | |
6724 | ||
6725 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6726 | 2, 3, 0, |
fdb82f93 | 6727 | doc: /* Set width of marginal areas of window WINDOW. |
e661376d KS |
6728 | If WINDOW is nil, set margins of the currently selected window. |
6729 | Second arg LEFT-WIDTH specifies the number of character cells to | |
6730 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6731 | does the same for the right marginal area. A nil width parameter | |
6732 | means no margin. */) | |
c10ce82e JB |
6733 | (window, left_width, right_width) |
6734 | Lisp_Object window, left_width, right_width; | |
5500c422 GM |
6735 | { |
6736 | struct window *w = decode_window (window); | |
5500c422 | 6737 | |
c2c3f202 KS |
6738 | /* Translate negative or zero widths to nil. |
6739 | Margins that are too wide have to be checked elsewhere. */ | |
6740 | ||
c10ce82e | 6741 | if (!NILP (left_width)) |
c2c3f202 | 6742 | { |
c10ce82e JB |
6743 | CHECK_NUMBER (left_width); |
6744 | if (XINT (left_width) <= 0) | |
6745 | left_width = Qnil; | |
c2c3f202 | 6746 | } |
5500c422 | 6747 | |
c10ce82e | 6748 | if (!NILP (right_width)) |
c2c3f202 | 6749 | { |
c10ce82e JB |
6750 | CHECK_NUMBER (right_width); |
6751 | if (XINT (right_width) <= 0) | |
6752 | right_width = Qnil; | |
c2c3f202 | 6753 | } |
5500c422 | 6754 | |
c10ce82e JB |
6755 | if (!EQ (w->left_margin_cols, left_width) |
6756 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6757 | { |
c10ce82e JB |
6758 | w->left_margin_cols = left_width; |
6759 | w->right_margin_cols = right_width; | |
949cf20f KS |
6760 | |
6761 | adjust_window_margins (w); | |
6762 | ||
6763 | ++windows_or_buffers_changed; | |
6764 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6765 | } | |
5500c422 | 6766 | |
5500c422 GM |
6767 | return Qnil; |
6768 | } | |
6769 | ||
6770 | ||
6771 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6772 | 0, 1, 0, | |
fdb82f93 PJ |
6773 | doc: /* Get width of marginal areas of window WINDOW. |
6774 | If WINDOW is omitted or nil, use the currently selected window. | |
6775 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
6776 | If a marginal area does not exist, its width will be returned | |
6777 | as nil. */) | |
6778 | (window) | |
5500c422 GM |
6779 | Lisp_Object window; |
6780 | { | |
6781 | struct window *w = decode_window (window); | |
949cf20f KS |
6782 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
6783 | } | |
6784 | ||
6785 | ||
6786 | \f | |
6787 | /*********************************************************************** | |
6788 | Fringes | |
6789 | ***********************************************************************/ | |
6790 | ||
6791 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, | |
6792 | 2, 4, 0, | |
62c2f759 | 6793 | doc: /* Set the fringe widths of window WINDOW. |
62c2f759 LK |
6794 | If WINDOW is nil, set the fringe widths of the currently selected |
6795 | window. | |
e661376d KS |
6796 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for |
6797 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6798 | fringe width. If a fringe width arg is nil, that means to use the | |
6799 | frame's default fringe width. Default fringe widths can be set with | |
6800 | the command `set-fringe-style'. | |
6801 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
62c2f759 LK |
6802 | outside of the display margins. By default, fringes are drawn between |
6803 | display marginal areas and the text area. */) | |
c10ce82e JB |
6804 | (window, left_width, right_width, outside_margins) |
6805 | Lisp_Object window, left_width, right_width, outside_margins; | |
949cf20f KS |
6806 | { |
6807 | struct window *w = decode_window (window); | |
6808 | ||
c10ce82e JB |
6809 | if (!NILP (left_width)) |
6810 | CHECK_NATNUM (left_width); | |
6811 | if (!NILP (right_width)) | |
6812 | CHECK_NATNUM (right_width); | |
5a857365 | 6813 | |
017e297e | 6814 | /* Do nothing on a tty. */ |
d46c6df5 NR |
6815 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
6816 | && (!EQ (w->left_fringe_width, left_width) | |
6817 | || !EQ (w->right_fringe_width, right_width) | |
6818 | || !EQ (w->fringes_outside_margins, outside_margins))) | |
949cf20f | 6819 | { |
c10ce82e JB |
6820 | w->left_fringe_width = left_width; |
6821 | w->right_fringe_width = right_width; | |
949cf20f KS |
6822 | w->fringes_outside_margins = outside_margins; |
6823 | ||
6824 | adjust_window_margins (w); | |
6825 | ||
6826 | clear_glyph_matrix (w->current_matrix); | |
6827 | w->window_end_valid = Qnil; | |
6828 | ||
6829 | ++windows_or_buffers_changed; | |
6830 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6831 | } | |
6832 | ||
6833 | return Qnil; | |
6834 | } | |
6835 | ||
6836 | ||
6837 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6838 | 0, 1, 0, | |
6839 | doc: /* Get width of fringes of window WINDOW. | |
6840 | If WINDOW is omitted or nil, use the currently selected window. | |
467e281a | 6841 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
949cf20f KS |
6842 | (window) |
6843 | Lisp_Object window; | |
6844 | { | |
6845 | struct window *w = decode_window (window); | |
d46c6df5 | 6846 | |
949cf20f KS |
6847 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6848 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
d46c6df5 NR |
6849 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
6850 | ? Qt : Qnil), Qnil))); | |
949cf20f KS |
6851 | } |
6852 | ||
6853 | ||
6854 | \f | |
6855 | /*********************************************************************** | |
6856 | Scroll bars | |
6857 | ***********************************************************************/ | |
6858 | ||
6859 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, Sset_window_scroll_bars, | |
6860 | 2, 4, 0, | |
6861 | doc: /* Set width and type of scroll bars of window WINDOW. | |
6862 | If window is nil, set scroll bars of the currently selected window. | |
6863 | Second parameter WIDTH specifies the pixel width for the scroll bar; | |
6864 | this is automatically adjusted to a multiple of the frame column width. | |
6865 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6866 | bar: left, right, or nil. | |
2f71b5ea | 6867 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6868 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6869 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
79fd290e JB |
6870 | (window, width, vertical_type, horizontal_type) |
6871 | Lisp_Object window, width, vertical_type, horizontal_type; | |
949cf20f KS |
6872 | { |
6873 | struct window *w = decode_window (window); | |
6874 | ||
6875 | if (!NILP (width)) | |
0f8fe9a2 SM |
6876 | { |
6877 | CHECK_NATNUM (width); | |
949cf20f | 6878 | |
0f8fe9a2 SM |
6879 | if (XINT (width) == 0) |
6880 | vertical_type = Qnil; | |
6881 | } | |
949cf20f | 6882 | |
2f71b5ea | 6883 | if (!(EQ (vertical_type, Qnil) |
0cc1039f | 6884 | || EQ (vertical_type, Qleft) |
2f71b5ea MY |
6885 | || EQ (vertical_type, Qright) |
6886 | || EQ (vertical_type, Qt))) | |
6887 | error ("Invalid type of vertical scroll bar"); | |
6888 | ||
949cf20f KS |
6889 | if (!EQ (w->scroll_bar_width, width) |
6890 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
6891 | { | |
6892 | w->scroll_bar_width = width; | |
6893 | w->vertical_scroll_bar_type = vertical_type; | |
6894 | ||
6895 | adjust_window_margins (w); | |
6896 | ||
6897 | clear_glyph_matrix (w->current_matrix); | |
6898 | w->window_end_valid = Qnil; | |
6899 | ||
6900 | ++windows_or_buffers_changed; | |
6901 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6902 | } | |
6903 | ||
6904 | return Qnil; | |
6905 | } | |
6906 | ||
6907 | ||
6908 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6909 | 0, 1, 0, | |
6910 | doc: /* Get width and type of scroll bars of window WINDOW. | |
6911 | If WINDOW is omitted or nil, use the currently selected window. | |
12853c58 KS |
6912 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6913 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6914 | value. */) | |
949cf20f KS |
6915 | (window) |
6916 | Lisp_Object window; | |
6917 | { | |
6918 | struct window *w = decode_window (window); | |
6919 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6920 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6921 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
6922 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
6923 | Fcons (w->vertical_scroll_bar_type, | |
6924 | Fcons (Qnil, Qnil)))); | |
5500c422 GM |
6925 | } |
6926 | ||
6927 | ||
7ab12479 | 6928 | \f |
5500c422 GM |
6929 | /*********************************************************************** |
6930 | Smooth scrolling | |
6931 | ***********************************************************************/ | |
6932 | ||
0cc1039f | 6933 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 PJ |
6934 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
6935 | Use the selected window if WINDOW is nil or omitted. | |
0cc1039f | 6936 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6937 | optional second arg PIXELS-P means value is measured in pixels. */) |
0cc1039f KS |
6938 | (window, pixels_p) |
6939 | Lisp_Object window, pixels_p; | |
5500c422 | 6940 | { |
47004952 | 6941 | Lisp_Object result; |
5500c422 GM |
6942 | struct frame *f; |
6943 | struct window *w; | |
177c0ea7 | 6944 | |
5500c422 GM |
6945 | if (NILP (window)) |
6946 | window = selected_window; | |
47004952 | 6947 | else |
b7826503 | 6948 | CHECK_WINDOW (window); |
5500c422 GM |
6949 | w = XWINDOW (window); |
6950 | f = XFRAME (w->frame); | |
177c0ea7 | 6951 | |
5500c422 | 6952 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6953 | result = (NILP (pixels_p) |
6954 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6955 | : make_number (-w->vscroll)); | |
5500c422 | 6956 | else |
47004952 GM |
6957 | result = make_number (0); |
6958 | return result; | |
5500c422 GM |
6959 | } |
6960 | ||
6961 | ||
6962 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6963 | 2, 3, 0, |
fdb82f93 | 6964 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6965 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6966 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6967 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6968 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6969 | corresponds to an integral number of pixels. The return value is the | |
6970 | result of this rounding. | |
6971 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
0cc1039f KS |
6972 | (window, vscroll, pixels_p) |
6973 | Lisp_Object window, vscroll, pixels_p; | |
5500c422 GM |
6974 | { |
6975 | struct window *w; | |
6976 | struct frame *f; | |
177c0ea7 | 6977 | |
5500c422 GM |
6978 | if (NILP (window)) |
6979 | window = selected_window; | |
47004952 | 6980 | else |
b7826503 PJ |
6981 | CHECK_WINDOW (window); |
6982 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 6983 | |
5500c422 GM |
6984 | w = XWINDOW (window); |
6985 | f = XFRAME (w->frame); | |
6986 | ||
6987 | if (FRAME_WINDOW_P (f)) | |
6988 | { | |
6989 | int old_dy = w->vscroll; | |
177c0ea7 | 6990 | |
0cc1039f KS |
6991 | w->vscroll = - (NILP (pixels_p) |
6992 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6993 | : XFLOATINT (vscroll)); | |
47004952 | 6994 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 6995 | |
e56263e5 KS |
6996 | if (w->vscroll != old_dy) |
6997 | { | |
6998 | /* Adjust glyph matrix of the frame if the virtual display | |
6999 | area becomes larger than before. */ | |
7000 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
7001 | adjust_glyphs (f); | |
177c0ea7 | 7002 | |
e56263e5 KS |
7003 | /* Prevent redisplay shortcuts. */ |
7004 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
7005 | } | |
5500c422 | 7006 | } |
177c0ea7 | 7007 | |
0cc1039f | 7008 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 7009 | } |
177c0ea7 | 7010 | |
7bbb5782 GM |
7011 | \f |
7012 | /* Call FN for all leaf windows on frame F. FN is called with the | |
7013 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 7014 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 GM |
7015 | |
7016 | void | |
f95464e4 | 7017 | foreach_window (f, fn, user_data) |
7bbb5782 | 7018 | struct frame *f; |
f95464e4 GM |
7019 | int (* fn) P_ ((struct window *, void *)); |
7020 | void *user_data; | |
7bbb5782 | 7021 | { |
76fb556f YM |
7022 | /* Fdelete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
7023 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) | |
7024 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
7025 | } |
7026 | ||
7027 | ||
7028 | /* Helper function for foreach_window. Call FN for all leaf windows | |
7029 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 7030 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 7031 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 7032 | |
67492200 | 7033 | static int |
f95464e4 | 7034 | foreach_window_1 (w, fn, user_data) |
7bbb5782 | 7035 | struct window *w; |
f95464e4 GM |
7036 | int (* fn) P_ ((struct window *, void *)); |
7037 | void *user_data; | |
7bbb5782 | 7038 | { |
67492200 | 7039 | int cont; |
177c0ea7 | 7040 | |
67492200 | 7041 | for (cont = 1; w && cont;) |
7bbb5782 GM |
7042 | { |
7043 | if (!NILP (w->hchild)) | |
f95464e4 | 7044 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 7045 | else if (!NILP (w->vchild)) |
f95464e4 | 7046 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
177c0ea7 | 7047 | else |
0f532a9a | 7048 | cont = fn (w, user_data); |
177c0ea7 | 7049 | |
7bbb5782 GM |
7050 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
7051 | } | |
67492200 GM |
7052 | |
7053 | return cont; | |
7bbb5782 GM |
7054 | } |
7055 | ||
7056 | ||
6d194a45 | 7057 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 7058 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
7059 | the window start. */ |
7060 | ||
67492200 | 7061 | static int |
7bbb5782 GM |
7062 | freeze_window_start (w, freeze_p) |
7063 | struct window *w; | |
f95464e4 | 7064 | void *freeze_p; |
7bbb5782 GM |
7065 | { |
7066 | if (w == XWINDOW (selected_window) | |
7067 | || MINI_WINDOW_P (w) | |
7068 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
24d744ac | 7069 | && ! NILP (Vminibuf_scroll_window) |
7bbb5782 | 7070 | && w == XWINDOW (Vminibuf_scroll_window))) |
f95464e4 | 7071 | freeze_p = NULL; |
177c0ea7 | 7072 | |
f95464e4 | 7073 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 7074 | return 1; |
7bbb5782 GM |
7075 | } |
7076 | ||
7077 | ||
7078 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
7079 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
7080 | means freeze the window start. */ | |
7081 | ||
7082 | void | |
7083 | freeze_window_starts (f, freeze_p) | |
7084 | struct frame *f; | |
7085 | int freeze_p; | |
7086 | { | |
cbccabec | 7087 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 7088 | } |
5500c422 GM |
7089 | |
7090 | \f | |
7091 | /*********************************************************************** | |
7092 | Initialization | |
7093 | ***********************************************************************/ | |
7094 | ||
cbff28e8 RS |
7095 | /* Return 1 if window configurations C1 and C2 |
7096 | describe the same state of affairs. This is used by Fequal. */ | |
7097 | ||
7098 | int | |
2f8274be | 7099 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 7100 | Lisp_Object c1, c2; |
2f8274be | 7101 | int ignore_positions; |
cbff28e8 RS |
7102 | { |
7103 | register struct save_window_data *d1, *d2; | |
7104 | struct Lisp_Vector *sw1, *sw2; | |
7105 | int i; | |
7106 | ||
663fbbba KS |
7107 | CHECK_WINDOW_CONFIGURATION (c1); |
7108 | CHECK_WINDOW_CONFIGURATION (c2); | |
177c0ea7 | 7109 | |
cbff28e8 RS |
7110 | d1 = (struct save_window_data *) XVECTOR (c1); |
7111 | d2 = (struct save_window_data *) XVECTOR (c2); | |
7112 | sw1 = XVECTOR (d1->saved_windows); | |
7113 | sw2 = XVECTOR (d2->saved_windows); | |
7114 | ||
949cf20f | 7115 | if (! EQ (d1->frame_cols, d2->frame_cols)) |
cbff28e8 | 7116 | return 0; |
949cf20f | 7117 | if (! EQ (d1->frame_lines, d2->frame_lines)) |
cbff28e8 RS |
7118 | return 0; |
7119 | if (! EQ (d1->frame_menu_bar_lines, d2->frame_menu_bar_lines)) | |
7120 | return 0; | |
7121 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
7122 | return 0; | |
7123 | /* Don't compare the current_window field directly. | |
7124 | Instead see w1_is_current and w2_is_current, below. */ | |
7125 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
7126 | return 0; | |
2f8274be | 7127 | if (! ignore_positions) |
3f49fddc KS |
7128 | { |
7129 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
7130 | return 0; | |
7131 | if (! EQ (d1->minibuf_selected_window, d2->minibuf_selected_window)) | |
7132 | return 0; | |
7133 | } | |
cbff28e8 RS |
7134 | /* Don't compare the root_window field. |
7135 | We don't require the two configurations | |
7136 | to use the same window object, | |
7137 | and the two root windows must be equivalent | |
7138 | if everything else compares equal. */ | |
7139 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
7140 | return 0; | |
7141 | if (! EQ (d1->min_width, d2->min_width)) | |
7142 | return 0; | |
7143 | if (! EQ (d1->min_height, d2->min_height)) | |
7144 | return 0; | |
7145 | ||
7146 | /* Verify that the two confis have the same number of windows. */ | |
7147 | if (sw1->size != sw2->size) | |
7148 | return 0; | |
7149 | ||
7150 | for (i = 0; i < sw1->size; i++) | |
7151 | { | |
7152 | struct saved_window *p1, *p2; | |
7153 | int w1_is_current, w2_is_current; | |
7154 | ||
7155 | p1 = SAVED_WINDOW_N (sw1, i); | |
7156 | p2 = SAVED_WINDOW_N (sw2, i); | |
7157 | ||
7158 | /* Verify that the current windows in the two | |
7159 | configurations correspond to each other. */ | |
7160 | w1_is_current = EQ (d1->current_window, p1->window); | |
7161 | w2_is_current = EQ (d2->current_window, p2->window); | |
7162 | ||
7163 | if (w1_is_current != w2_is_current) | |
7164 | return 0; | |
7165 | ||
7166 | /* Verify that the corresponding windows do match. */ | |
7167 | if (! EQ (p1->buffer, p2->buffer)) | |
7168 | return 0; | |
949cf20f | 7169 | if (! EQ (p1->left_col, p2->left_col)) |
cbff28e8 | 7170 | return 0; |
949cf20f | 7171 | if (! EQ (p1->top_line, p2->top_line)) |
cbff28e8 | 7172 | return 0; |
949cf20f | 7173 | if (! EQ (p1->total_cols, p2->total_cols)) |
cbff28e8 | 7174 | return 0; |
949cf20f | 7175 | if (! EQ (p1->total_lines, p2->total_lines)) |
cbff28e8 | 7176 | return 0; |
cbff28e8 RS |
7177 | if (! EQ (p1->display_table, p2->display_table)) |
7178 | return 0; | |
7179 | if (! EQ (p1->parent, p2->parent)) | |
7180 | return 0; | |
7181 | if (! EQ (p1->prev, p2->prev)) | |
7182 | return 0; | |
2f8274be RS |
7183 | if (! ignore_positions) |
7184 | { | |
7185 | if (! EQ (p1->hscroll, p2->hscroll)) | |
7186 | return 0; | |
ea68264b GM |
7187 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
7188 | return 0; | |
2f8274be RS |
7189 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
7190 | return 0; | |
7191 | if (NILP (Fequal (p1->start, p2->start))) | |
7192 | return 0; | |
7193 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
7194 | return 0; | |
7195 | if (NILP (Fequal (p1->mark, p2->mark))) | |
7196 | return 0; | |
7197 | } | |
949cf20f KS |
7198 | if (! EQ (p1->left_margin_cols, p2->left_margin_cols)) |
7199 | return 0; | |
7200 | if (! EQ (p1->right_margin_cols, p2->right_margin_cols)) | |
7201 | return 0; | |
7202 | if (! EQ (p1->left_fringe_width, p2->left_fringe_width)) | |
7203 | return 0; | |
7204 | if (! EQ (p1->right_fringe_width, p2->right_fringe_width)) | |
7205 | return 0; | |
7206 | if (! EQ (p1->fringes_outside_margins, p2->fringes_outside_margins)) | |
7207 | return 0; | |
7208 | if (! EQ (p1->scroll_bar_width, p2->scroll_bar_width)) | |
7209 | return 0; | |
7210 | if (! EQ (p1->vertical_scroll_bar_type, p2->vertical_scroll_bar_type)) | |
7211 | return 0; | |
cbff28e8 RS |
7212 | } |
7213 | ||
7214 | return 1; | |
7215 | } | |
2f8274be RS |
7216 | |
7217 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
7218 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
7219 | doc: /* Compare two window configurations as regards the structure of windows. |
7220 | This function ignores details such as the values of point and mark | |
7221 | and scrolling positions. */) | |
7222 | (x, y) | |
2f8274be RS |
7223 | Lisp_Object x, y; |
7224 | { | |
7225 | if (compare_window_configurations (x, y, 1)) | |
7226 | return Qt; | |
7227 | return Qnil; | |
7228 | } | |
cbff28e8 | 7229 | \f |
dfcf069d | 7230 | void |
7ab12479 JB |
7231 | init_window_once () |
7232 | { | |
1ae1a37d GM |
7233 | struct frame *f = make_terminal_frame (); |
7234 | XSETFRAME (selected_frame, f); | |
7235 | Vterminal_frame = selected_frame; | |
7236 | minibuf_window = f->minibuffer_window; | |
7237 | selected_window = f->selected_window; | |
7238 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
7239 | |
7240 | window_initialized = 1; | |
7ab12479 JB |
7241 | } |
7242 | ||
67492200 GM |
7243 | void |
7244 | init_window () | |
7245 | { | |
7246 | Vwindow_list = Qnil; | |
7247 | } | |
7248 | ||
dfcf069d | 7249 | void |
7ab12479 JB |
7250 | syms_of_window () |
7251 | { | |
c525d842 CY |
7252 | Qscroll_up = intern ("scroll-up"); |
7253 | staticpro (&Qscroll_up); | |
7254 | ||
7255 | Qscroll_down = intern ("scroll-down"); | |
7256 | staticpro (&Qscroll_down); | |
7257 | ||
8a37516b GM |
7258 | Qwindow_size_fixed = intern ("window-size-fixed"); |
7259 | staticpro (&Qwindow_size_fixed); | |
c0e7ccd3 | 7260 | Fset (Qwindow_size_fixed, Qnil); |
177c0ea7 | 7261 | |
543f5fb1 RS |
7262 | staticpro (&Qwindow_configuration_change_hook); |
7263 | Qwindow_configuration_change_hook | |
7264 | = intern ("window-configuration-change-hook"); | |
7265 | ||
7ab12479 JB |
7266 | Qwindowp = intern ("windowp"); |
7267 | staticpro (&Qwindowp); | |
7268 | ||
3f8ab7bd RS |
7269 | Qwindow_configuration_p = intern ("window-configuration-p"); |
7270 | staticpro (&Qwindow_configuration_p); | |
7271 | ||
806b4d9b JB |
7272 | Qwindow_live_p = intern ("window-live-p"); |
7273 | staticpro (&Qwindow_live_p); | |
605be8af | 7274 | |
2cccc823 | 7275 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
7276 | staticpro (&Qtemp_buffer_show_hook); |
7277 | ||
67492200 | 7278 | staticpro (&Vwindow_list); |
8bfb170b KS |
7279 | |
7280 | minibuf_selected_window = Qnil; | |
3dbab091 | 7281 | staticpro (&minibuf_selected_window); |
67492200 | 7282 | |
66fe93d1 | 7283 | window_scroll_pixel_based_preserve_y = -1; |
66d43aea | 7284 | |
7ab12479 | 7285 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
fdb82f93 PJ |
7286 | doc: /* Non-nil means call as function to display a help buffer. |
7287 | The function is called with one argument, the buffer to be displayed. | |
7288 | Used by `with-output-to-temp-buffer'. | |
7289 | If this function is used, then it must do the entire job of showing | |
7290 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
7291 | Vtemp_buffer_show_function = Qnil; |
7292 | ||
7293 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
fdb82f93 PJ |
7294 | doc: /* If non-nil, function to call to handle `display-buffer'. |
7295 | It will receive two args, the buffer and a flag which if non-nil means | |
c2755926 LT |
7296 | that the currently selected window is not acceptable. |
7297 | It should choose or create a window, display the specified buffer in it, | |
7298 | and return the window. | |
fdb82f93 PJ |
7299 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window' |
7300 | work using this function. */); | |
7ab12479 JB |
7301 | Vdisplay_buffer_function = Qnil; |
7302 | ||
6529ed87 | 7303 | DEFVAR_LISP ("even-window-heights", &Veven_window_heights, |
fdb82f93 PJ |
7304 | doc: /* *If non-nil, `display-buffer' should even the window heights. |
7305 | If nil, `display-buffer' will leave the window configuration alone. */); | |
6529ed87 GM |
7306 | Veven_window_heights = Qt; |
7307 | ||
7ab12479 | 7308 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
fdb82f93 | 7309 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
7310 | Vminibuf_scroll_window = Qnil; |
7311 | ||
cc91894c | 7312 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows, |
26124d5e | 7313 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
7314 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
7315 | is displayed in the `mode-line' face. */); | |
7316 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 7317 | |
7ab12479 | 7318 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, |
fdb82f93 | 7319 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
7320 | Vother_window_scroll_buffer = Qnil; |
7321 | ||
44fa5b1e | 7322 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
fdb82f93 | 7323 | doc: /* *Non-nil means `display-buffer' should make a separate frame. */); |
44fa5b1e | 7324 | pop_up_frames = 0; |
7ab12479 | 7325 | |
e56263e5 KS |
7326 | DEFVAR_BOOL ("auto-window-vscroll", &auto_window_vscroll_p, |
7327 | doc: /* *Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); | |
7328 | auto_window_vscroll_p = 1; | |
7329 | ||
9c3da604 | 7330 | DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames, |
fdb82f93 PJ |
7331 | doc: /* *Non-nil means `display-buffer' should reuse frames. |
7332 | If the buffer in question is already displayed in a frame, raise that frame. */); | |
9c3da604 GM |
7333 | display_buffer_reuse_frames = 0; |
7334 | ||
44fa5b1e | 7335 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
fdb82f93 PJ |
7336 | doc: /* Function to call to handle automatic new frame creation. |
7337 | It is called with no arguments and should return a newly created frame. | |
7338 | ||
7339 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))' | |
7340 | where `pop-up-frame-alist' would hold the default frame parameters. */); | |
44fa5b1e | 7341 | Vpop_up_frame_function = Qnil; |
7ab12479 | 7342 | |
a90712c2 | 7343 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
fdb82f93 | 7344 | doc: /* *List of buffer names that should have their own special frames. |
c019856e RS |
7345 | Displaying a buffer with `display-buffer' or `pop-to-buffer', |
7346 | if its name is in this list, makes a special frame for it | |
fdb82f93 PJ |
7347 | using `special-display-function'. See also `special-display-regexps'. |
7348 | ||
7349 | An element of the list can be a list instead of just a string. | |
7350 | There are two ways to use a list as an element: | |
7351 | (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...) | |
3cb7143c RS |
7352 | In the first case, the FRAME-PARAMETERS are pairs of the form |
7353 | \(PARAMETER . VALUE); these parameter values are used to create the frame. | |
7354 | In the second case, FUNCTION is called with BUFFER as the first argument, | |
7355 | followed by the OTHER-ARGS--it can display BUFFER in any way it likes. | |
fdb82f93 PJ |
7356 | All this is done by the function found in `special-display-function'. |
7357 | ||
499858c5 RS |
7358 | If the specified frame parameters include (same-buffer . t), the |
7359 | buffer is displayed in the currently selected window. Otherwise, if | |
7360 | they include (same-frame . t), the buffer is displayed in a new window | |
7361 | in the currently selected frame. | |
7362 | ||
fdb82f93 PJ |
7363 | If this variable appears \"not to work\", because you add a name to it |
7364 | but that buffer still appears in the selected window, look at the | |
7365 | values of `same-window-buffer-names' and `same-window-regexps'. | |
7366 | Those variables take precedence over this one. */); | |
a90712c2 RS |
7367 | Vspecial_display_buffer_names = Qnil; |
7368 | ||
7369 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
fdb82f93 | 7370 | doc: /* *List of regexps saying which buffers should have their own special frames. |
c019856e RS |
7371 | When displaying a buffer with `display-buffer' or `pop-to-buffer', |
7372 | if any regexp in this list matches the buffer name, it makes a | |
7373 | special frame for the buffer by calling `special-display-function'. | |
fdb82f93 PJ |
7374 | |
7375 | An element of the list can be a list instead of just a string. | |
7376 | There are two ways to use a list as an element: | |
7377 | (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...) | |
3cb7143c RS |
7378 | In the first case, the FRAME-PARAMETERS are pairs of the form |
7379 | \(PARAMETER . VALUE); these parameter values are used to create the frame. | |
7380 | In the second case, FUNCTION is called with BUFFER as the first argument, | |
7381 | followed by the OTHER-ARGS--it can display the buffer in any way it likes. | |
fdb82f93 PJ |
7382 | All this is done by the function found in `special-display-function'. |
7383 | ||
499858c5 RS |
7384 | If the specified frame parameters include (same-buffer . t), the |
7385 | buffer is displayed in the currently selected window. Otherwise, if | |
7386 | they include (same-frame . t), the buffer is displayed in a new window | |
7387 | in the currently selected frame. | |
7388 | ||
fdb82f93 PJ |
7389 | If this variable appears \"not to work\", because you add a regexp to it |
7390 | but the matching buffers still appear in the selected window, look at the | |
7391 | values of `same-window-buffer-names' and `same-window-regexps'. | |
7392 | Those variables take precedence over this one. */); | |
a90712c2 RS |
7393 | Vspecial_display_regexps = Qnil; |
7394 | ||
7395 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
fdb82f93 PJ |
7396 | doc: /* Function to call to make a new frame for a special buffer. |
7397 | It is called with two arguments, the buffer and optional buffer specific | |
7398 | data, and should return a window displaying that buffer. | |
a5731348 SM |
7399 | The default value normally makes a separate frame for the buffer, |
7400 | using `special-display-frame-alist' to specify the frame parameters. | |
7401 | But if the buffer specific data includes (same-buffer . t) then the | |
7402 | buffer is displayed in the current selected window. | |
7403 | Otherwise if it includes (same-frame . t) then the buffer is displayed in | |
7404 | a new window in the currently selected frame. | |
7405 | ||
7406 | A buffer is special if it is listed in `special-display-buffer-names' | |
fdb82f93 | 7407 | or matches a regexp in `special-display-regexps'. */); |
a90712c2 RS |
7408 | Vspecial_display_function = Qnil; |
7409 | ||
855d8627 | 7410 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
fdb82f93 PJ |
7411 | doc: /* *List of buffer names that should appear in the selected window. |
7412 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer' | |
7413 | switches to it in the selected window, rather than making it appear | |
7414 | in some other window. | |
7415 | ||
7416 | An element of the list can be a cons cell instead of just a string. | |
7417 | Then the car must be a string, which specifies the buffer name. | |
7418 | This is for compatibility with `special-display-buffer-names'; | |
7419 | the cdr of the cons cell is ignored. | |
7420 | ||
7421 | See also `same-window-regexps'. */); | |
855d8627 RS |
7422 | Vsame_window_buffer_names = Qnil; |
7423 | ||
7424 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
fdb82f93 PJ |
7425 | doc: /* *List of regexps saying which buffers should appear in the selected window. |
7426 | If a buffer name matches one of these regexps, then displaying it | |
7427 | using `display-buffer' or `pop-to-buffer' switches to it | |
7428 | in the selected window, rather than making it appear in some other window. | |
7429 | ||
7430 | An element of the list can be a cons cell instead of just a string. | |
7431 | Then the car must be a string, which specifies the buffer name. | |
7432 | This is for compatibility with `special-display-buffer-names'; | |
7433 | the cdr of the cons cell is ignored. | |
7434 | ||
7435 | See also `same-window-buffer-names'. */); | |
855d8627 RS |
7436 | Vsame_window_regexps = Qnil; |
7437 | ||
7ab12479 | 7438 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
fdb82f93 | 7439 | doc: /* *Non-nil means display-buffer should make new windows. */); |
7ab12479 JB |
7440 | pop_up_windows = 1; |
7441 | ||
7442 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
fdb82f93 | 7443 | doc: /* *Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
7444 | next_screen_context_lines = 2; |
7445 | ||
7446 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
bdbae5b8 EZ |
7447 | doc: /* *A window must be at least this tall to be eligible for splitting |
7448 | by `display-buffer'. The value is in line units. | |
fdb82f93 | 7449 | If there is only one window, it is split regardless of this value. */); |
7ab12479 JB |
7450 | split_height_threshold = 500; |
7451 | ||
7452 | DEFVAR_INT ("window-min-height", &window_min_height, | |
bdbae5b8 EZ |
7453 | doc: /* *Delete any window less than this tall (including its mode line). |
7454 | The value is in line units. */); | |
7ab12479 JB |
7455 | window_min_height = 4; |
7456 | ||
7457 | DEFVAR_INT ("window-min-width", &window_min_width, | |
bdbae5b8 | 7458 | doc: /* *Delete any window less than this wide (measured in characters). */); |
7ab12479 JB |
7459 | window_min_width = 10; |
7460 | ||
5500c422 GM |
7461 | DEFVAR_LISP ("scroll-preserve-screen-position", |
7462 | &Vscroll_preserve_screen_position, | |
bdf4ec93 RS |
7463 | doc: /* *Controls if scroll commands move point to keep its screen line unchanged. |
7464 | A value of nil means point does not keep its screen position except | |
7465 | at the scroll margin or window boundary respectively. | |
7466 | A value of t means point keeps its screen position if the scroll | |
7467 | command moved it vertically out of the window, e.g. when scrolling | |
7468 | by full screens. | |
7469 | Any other value means point always keeps its screen position. */); | |
5500c422 | 7470 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 7471 | |
543f5fb1 RS |
7472 | DEFVAR_LISP ("window-configuration-change-hook", |
7473 | &Vwindow_configuration_change_hook, | |
fdb82f93 PJ |
7474 | doc: /* Functions to call when window configuration changes. |
7475 | The selected frame is the one whose configuration has changed. */); | |
543f5fb1 RS |
7476 | Vwindow_configuration_change_hook = Qnil; |
7477 | ||
7ab12479 JB |
7478 | defsubr (&Sselected_window); |
7479 | defsubr (&Sminibuffer_window); | |
7480 | defsubr (&Swindow_minibuffer_p); | |
7481 | defsubr (&Swindowp); | |
806b4d9b | 7482 | defsubr (&Swindow_live_p); |
7ab12479 | 7483 | defsubr (&Spos_visible_in_window_p); |
536833ab | 7484 | defsubr (&Swindow_line_height); |
7ab12479 JB |
7485 | defsubr (&Swindow_buffer); |
7486 | defsubr (&Swindow_height); | |
7487 | defsubr (&Swindow_width); | |
7488 | defsubr (&Swindow_hscroll); | |
7489 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
7490 | defsubr (&Swindow_redisplay_end_trigger); |
7491 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 7492 | defsubr (&Swindow_edges); |
c99a9eb3 RS |
7493 | defsubr (&Swindow_pixel_edges); |
7494 | defsubr (&Swindow_inside_edges); | |
7495 | defsubr (&Swindow_inside_pixel_edges); | |
d5783c40 JB |
7496 | defsubr (&Scoordinates_in_window_p); |
7497 | defsubr (&Swindow_at); | |
7ab12479 JB |
7498 | defsubr (&Swindow_point); |
7499 | defsubr (&Swindow_start); | |
7500 | defsubr (&Swindow_end); | |
7501 | defsubr (&Sset_window_point); | |
7502 | defsubr (&Sset_window_start); | |
7503 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 7504 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
7505 | defsubr (&Swindow_display_table); |
7506 | defsubr (&Sset_window_display_table); | |
7507 | defsubr (&Snext_window); | |
7508 | defsubr (&Sprevious_window); | |
7509 | defsubr (&Sother_window); | |
7510 | defsubr (&Sget_lru_window); | |
7511 | defsubr (&Sget_largest_window); | |
7512 | defsubr (&Sget_buffer_window); | |
7513 | defsubr (&Sdelete_other_windows); | |
7514 | defsubr (&Sdelete_windows_on); | |
7515 | defsubr (&Sreplace_buffer_in_windows); | |
7516 | defsubr (&Sdelete_window); | |
7517 | defsubr (&Sset_window_buffer); | |
7518 | defsubr (&Sselect_window); | |
4628f7a4 EN |
7519 | defsubr (&Sspecial_display_p); |
7520 | defsubr (&Ssame_window_p); | |
7ab12479 | 7521 | defsubr (&Sdisplay_buffer); |
e661376d | 7522 | defsubr (&Sforce_window_update); |
7ab12479 JB |
7523 | defsubr (&Ssplit_window); |
7524 | defsubr (&Senlarge_window); | |
7525 | defsubr (&Sshrink_window); | |
0d384044 | 7526 | defsubr (&Sadjust_window_trailing_edge); |
7ab12479 JB |
7527 | defsubr (&Sscroll_up); |
7528 | defsubr (&Sscroll_down); | |
7529 | defsubr (&Sscroll_left); | |
7530 | defsubr (&Sscroll_right); | |
ccd0664b | 7531 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 7532 | defsubr (&Sscroll_other_window); |
fa832261 | 7533 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 7534 | defsubr (&Srecenter); |
81fe0836 | 7535 | defsubr (&Swindow_text_height); |
7ab12479 JB |
7536 | defsubr (&Smove_to_window_line); |
7537 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 7538 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
7539 | defsubr (&Sset_window_configuration); |
7540 | defsubr (&Scurrent_window_configuration); | |
7541 | defsubr (&Ssave_window_excursion); | |
c16e1cc3 | 7542 | defsubr (&Swindow_tree); |
5500c422 GM |
7543 | defsubr (&Sset_window_margins); |
7544 | defsubr (&Swindow_margins); | |
949cf20f KS |
7545 | defsubr (&Sset_window_fringes); |
7546 | defsubr (&Swindow_fringes); | |
7547 | defsubr (&Sset_window_scroll_bars); | |
7548 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
7549 | defsubr (&Swindow_vscroll); |
7550 | defsubr (&Sset_window_vscroll); | |
2f8274be | 7551 | defsubr (&Scompare_window_configurations); |
67492200 | 7552 | defsubr (&Swindow_list); |
7ab12479 JB |
7553 | } |
7554 | ||
dfcf069d | 7555 | void |
7ab12479 JB |
7556 | keys_of_window () |
7557 | { | |
7558 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
7559 | initial_define_key (control_x_map, '2', "split-window"); | |
7560 | initial_define_key (control_x_map, '0', "delete-window"); | |
7561 | initial_define_key (control_x_map, 'o', "other-window"); | |
7562 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
7563 | initial_define_key (control_x_map, '<', "scroll-left"); | |
7564 | initial_define_key (control_x_map, '>', "scroll-right"); | |
7565 | ||
7566 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
7567 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
7568 | initial_define_key (meta_map, 'v', "scroll-down"); | |
7569 | ||
7570 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
7571 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
7572 | } | |
ab5796a9 MB |
7573 | |
7574 | /* arch-tag: 90a9c576-0590-48f1-a5f1-6c96a0452d9f | |
7575 | (do not change this comment) */ |