Commit | Line | Data |
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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
203eb0aa | 3 | Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1996, 1997, 1998, 2000, |
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) | |
dfc265a3 | 1185 | && XFASTINT (w->last_modified) >= BUF_MODIFF (b) |
4c9564e8 | 1186 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (b)) |
41791a20 | 1187 | && !noninteractive) |
478292ed | 1188 | { |
cbc099e5 GM |
1189 | struct text_pos startp; |
1190 | struct it it; | |
b3a10345 KS |
1191 | struct buffer *old_buffer = NULL; |
1192 | ||
1193 | /* Cannot use Fvertical_motion because that function doesn't | |
1194 | cope with variable-height lines. */ | |
1195 | if (b != current_buffer) | |
1196 | { | |
1197 | old_buffer = current_buffer; | |
1198 | set_buffer_internal (b); | |
1199 | } | |
2d6d9df0 GM |
1200 | |
1201 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1202 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1203 | `-l' containing a call to `rmail' with subsequent other |
1204 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1205 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 1206 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 1207 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 1208 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 1209 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1210 | else |
cbc099e5 GM |
1211 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
1212 | ||
cbc099e5 GM |
1213 | start_display (&it, w, startp); |
1214 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1215 | if (it.current_y < it.last_visible_y) |
1216 | move_it_past_eol (&it); | |
cbc099e5 | 1217 | value = make_number (IT_CHARPOS (it)); |
177c0ea7 | 1218 | |
99593a9d GM |
1219 | if (old_buffer) |
1220 | set_buffer_internal (old_buffer); | |
478292ed RS |
1221 | } |
1222 | else | |
b3a10345 | 1223 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1224 | |
1225 | return value; | |
1226 | } | |
1227 | ||
1228 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
a0a37a6f LT |
1229 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
1230 | Return POS. */) | |
fdb82f93 | 1231 | (window, pos) |
7ab12479 JB |
1232 | Lisp_Object window, pos; |
1233 | { | |
1234 | register struct window *w = decode_window (window); | |
1235 | ||
b7826503 | 1236 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
1237 | if (w == XWINDOW (selected_window) |
1238 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
1239 | Fgoto_char (pos); |
1240 | else | |
1241 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 1242 | |
0685cb3c GM |
1243 | /* We have to make sure that redisplay updates the window to show |
1244 | the new value of point. */ | |
1245 | if (!EQ (window, selected_window)) | |
799417bd | 1246 | ++windows_or_buffers_changed; |
177c0ea7 | 1247 | |
7ab12479 JB |
1248 | return pos; |
1249 | } | |
1250 | ||
1251 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1252 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
a0a37a6f | 1253 | Return POS. |
fdb82f93 PJ |
1254 | Optional third arg NOFORCE non-nil inhibits next redisplay |
1255 | from overriding motion of point in order to display at this exact start. */) | |
1256 | (window, pos, noforce) | |
7ab12479 JB |
1257 | Lisp_Object window, pos, noforce; |
1258 | { | |
1259 | register struct window *w = decode_window (window); | |
1260 | ||
b7826503 | 1261 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
1262 | set_marker_restricted (w->start, pos, w->buffer); |
1263 | /* this is not right, but much easier than doing what is right. */ | |
1264 | w->start_at_line_beg = Qnil; | |
265a9e55 | 1265 | if (NILP (noforce)) |
7ab12479 JB |
1266 | w->force_start = Qt; |
1267 | w->update_mode_line = Qt; | |
d834a2e9 | 1268 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1269 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
1270 | if (!EQ (window, selected_window)) |
1271 | windows_or_buffers_changed++; | |
ce7fae7d | 1272 | |
7ab12479 JB |
1273 | return pos; |
1274 | } | |
1275 | ||
1276 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
1277 | 1, 1, 0, | |
fdb82f93 PJ |
1278 | doc: /* Return WINDOW's dedicated object, usually t or nil. |
1279 | See also `set-window-dedicated-p'. */) | |
1280 | (window) | |
7ab12479 JB |
1281 | Lisp_Object window; |
1282 | { | |
1283 | return decode_window (window)->dedicated; | |
1284 | } | |
1285 | ||
d207b766 RS |
1286 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1287 | Sset_window_dedicated_p, 2, 2, 0, | |
fdb82f93 PJ |
1288 | doc: /* Control whether WINDOW is dedicated to the buffer it displays. |
1289 | If it is dedicated, Emacs will not automatically change | |
1290 | which buffer appears in it. | |
1291 | The second argument is the new value for the dedication flag; | |
1292 | non-nil means yes. */) | |
1293 | (window, arg) | |
1294 | Lisp_Object window, arg; | |
7ab12479 JB |
1295 | { |
1296 | register struct window *w = decode_window (window); | |
1297 | ||
2d0834cc | 1298 | w->dedicated = arg; |
7ab12479 JB |
1299 | |
1300 | return w->dedicated; | |
1301 | } | |
1302 | ||
1303 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
1304 | 0, 1, 0, | |
fdb82f93 PJ |
1305 | doc: /* Return the display-table that WINDOW is using. */) |
1306 | (window) | |
7ab12479 JB |
1307 | Lisp_Object window; |
1308 | { | |
1309 | return decode_window (window)->display_table; | |
1310 | } | |
1311 | ||
5500c422 GM |
1312 | /* Get the display table for use on window W. This is either W's |
1313 | display table or W's buffer's display table. Ignore the specified | |
1314 | tables if they are not valid; if no valid table is specified, | |
1315 | return 0. */ | |
7ab12479 | 1316 | |
319315f1 | 1317 | struct Lisp_Char_Table * |
7ab12479 JB |
1318 | window_display_table (w) |
1319 | struct window *w; | |
1320 | { | |
c756cdbe GM |
1321 | struct Lisp_Char_Table *dp = NULL; |
1322 | ||
1323 | if (DISP_TABLE_P (w->display_table)) | |
1324 | dp = XCHAR_TABLE (w->display_table); | |
1325 | else if (BUFFERP (w->buffer)) | |
1326 | { | |
1327 | struct buffer *b = XBUFFER (w->buffer); | |
177c0ea7 | 1328 | |
c756cdbe GM |
1329 | if (DISP_TABLE_P (b->display_table)) |
1330 | dp = XCHAR_TABLE (b->display_table); | |
1331 | else if (DISP_TABLE_P (Vstandard_display_table)) | |
1332 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1333 | } | |
171d003c | 1334 | |
c756cdbe | 1335 | return dp; |
7ab12479 JB |
1336 | } |
1337 | ||
3a2712f9 | 1338 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 PJ |
1339 | doc: /* Set WINDOW's display-table to TABLE. */) |
1340 | (window, table) | |
7ab12479 JB |
1341 | register Lisp_Object window, table; |
1342 | { | |
1343 | register struct window *w; | |
7ab12479 JB |
1344 | |
1345 | w = decode_window (window); | |
1346 | w->display_table = table; | |
1347 | return table; | |
1348 | } | |
1349 | \f | |
1350 | /* Record info on buffer window w is displaying | |
1351 | when it is about to cease to display that buffer. */ | |
dfcf069d | 1352 | static void |
7ab12479 JB |
1353 | unshow_buffer (w) |
1354 | register struct window *w; | |
1355 | { | |
12cae7c0 | 1356 | Lisp_Object buf; |
b73ea88e | 1357 | struct buffer *b; |
7ab12479 | 1358 | |
12cae7c0 | 1359 | buf = w->buffer; |
b73ea88e RS |
1360 | b = XBUFFER (buf); |
1361 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1362 | abort (); |
1363 | ||
573f41ab | 1364 | #if 0 |
7ab12479 JB |
1365 | if (w == XWINDOW (selected_window) |
1366 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1367 | /* Do this except when the selected window's buffer | |
1368 | is being removed from some other window. */ | |
573f41ab RS |
1369 | #endif |
1370 | /* last_window_start records the start position that this buffer | |
1371 | had in the last window to be disconnected from it. | |
1372 | Now that this statement is unconditional, | |
1373 | it is possible for the buffer to be displayed in the | |
1374 | selected window, while last_window_start reflects another | |
1375 | window which was recently showing the same buffer. | |
1376 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1377 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1378 | |
1379 | /* Point in the selected window's buffer | |
1380 | is actually stored in that buffer, and the window's pointm isn't used. | |
1381 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1382 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1383 | /* This line helps to fix Horsley's testbug.el bug. */ | |
8801a864 KR |
1384 | && !(WINDOWP (b->last_selected_window) |
1385 | && w != XWINDOW (b->last_selected_window) | |
719eaeb1 | 1386 | && EQ (buf, XWINDOW (b->last_selected_window)->buffer))) |
b73ea88e RS |
1387 | temp_set_point_both (b, |
1388 | clip_to_bounds (BUF_BEGV (b), | |
1389 | XMARKER (w->pointm)->charpos, | |
1390 | BUF_ZV (b)), | |
1391 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1392 | marker_byte_position (w->pointm), | |
1393 | BUF_ZV_BYTE (b))); | |
177c0ea7 | 1394 | |
8801a864 KR |
1395 | if (WINDOWP (b->last_selected_window) |
1396 | && w == XWINDOW (b->last_selected_window)) | |
719eaeb1 | 1397 | b->last_selected_window = Qnil; |
7ab12479 JB |
1398 | } |
1399 | ||
1400 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 1401 | static void |
7ab12479 JB |
1402 | replace_window (old, replacement) |
1403 | Lisp_Object old, replacement; | |
1404 | { | |
1405 | register Lisp_Object tem; | |
1406 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
1407 | ||
44fa5b1e JB |
1408 | /* If OLD is its frame's root_window, then replacement is the new |
1409 | root_window for that frame. */ | |
7ab12479 | 1410 | |
7f4161e0 | 1411 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 1412 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 | 1413 | |
949cf20f KS |
1414 | p->left_col = o->left_col; |
1415 | p->top_line = o->top_line; | |
1416 | p->total_cols = o->total_cols; | |
1417 | p->total_lines = o->total_lines; | |
5500c422 GM |
1418 | p->desired_matrix = p->current_matrix = 0; |
1419 | p->vscroll = 0; | |
1420 | bzero (&p->cursor, sizeof (p->cursor)); | |
1421 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
1422 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
1423 | p->phys_cursor_type = -1; | |
4b26579e | 1424 | p->phys_cursor_width = -1; |
5500c422 GM |
1425 | p->must_be_updated_p = 0; |
1426 | p->pseudo_window_p = 0; | |
1427 | XSETFASTINT (p->window_end_vpos, 0); | |
1428 | XSETFASTINT (p->window_end_pos, 0); | |
1429 | p->window_end_valid = Qnil; | |
7bbb5782 | 1430 | p->frozen_window_start_p = 0; |
949cf20f | 1431 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
1432 | |
1433 | p->next = tem = o->next; | |
265a9e55 | 1434 | if (!NILP (tem)) |
7ab12479 JB |
1435 | XWINDOW (tem)->prev = replacement; |
1436 | ||
1437 | p->prev = tem = o->prev; | |
265a9e55 | 1438 | if (!NILP (tem)) |
7ab12479 JB |
1439 | XWINDOW (tem)->next = replacement; |
1440 | ||
1441 | p->parent = tem = o->parent; | |
265a9e55 | 1442 | if (!NILP (tem)) |
7ab12479 JB |
1443 | { |
1444 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1445 | XWINDOW (tem)->vchild = replacement; | |
1446 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1447 | XWINDOW (tem)->hchild = replacement; | |
1448 | } | |
1449 | ||
1450 | /*** Here, if replacement is a vertical combination | |
1451 | and so is its new parent, we should make replacement's | |
1452 | children be children of that parent instead. ***/ | |
1453 | } | |
1454 | ||
1455 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
fdb82f93 PJ |
1456 | doc: /* Remove WINDOW from the display. Default is selected window. */) |
1457 | (window) | |
7ab12479 | 1458 | register Lisp_Object window; |
543f5fb1 RS |
1459 | { |
1460 | delete_window (window); | |
1461 | ||
1462 | if (! NILP (Vwindow_configuration_change_hook) | |
1463 | && ! NILP (Vrun_hooks)) | |
1464 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
1465 | ||
1466 | return Qnil; | |
1467 | } | |
1468 | ||
5e14b1fc | 1469 | void |
543f5fb1 RS |
1470 | delete_window (window) |
1471 | register Lisp_Object window; | |
7ab12479 JB |
1472 | { |
1473 | register Lisp_Object tem, parent, sib; | |
1474 | register struct window *p; | |
1475 | register struct window *par; | |
951f9df5 | 1476 | struct frame *f; |
7ab12479 | 1477 | |
605be8af JB |
1478 | /* Because this function is called by other C code on non-leaf |
1479 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1480 | so we can't decode_window here. */ | |
265a9e55 | 1481 | if (NILP (window)) |
7ab12479 JB |
1482 | window = selected_window; |
1483 | else | |
b7826503 | 1484 | CHECK_WINDOW (window); |
7ab12479 | 1485 | p = XWINDOW (window); |
605be8af | 1486 | |
0d384044 | 1487 | /* It's a no-op to delete an already-deleted window. */ |
605be8af JB |
1488 | if (NILP (p->buffer) |
1489 | && NILP (p->hchild) | |
1490 | && NILP (p->vchild)) | |
296b535c | 1491 | return; |
605be8af | 1492 | |
7ab12479 | 1493 | parent = p->parent; |
265a9e55 | 1494 | if (NILP (parent)) |
7ab12479 JB |
1495 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1496 | par = XWINDOW (parent); | |
1497 | ||
1498 | windows_or_buffers_changed++; | |
67492200 | 1499 | Vwindow_list = Qnil; |
951f9df5 GM |
1500 | f = XFRAME (WINDOW_FRAME (p)); |
1501 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
7ab12479 | 1502 | |
605be8af JB |
1503 | /* Are we trying to delete any frame's selected window? */ |
1504 | { | |
192c3131 | 1505 | Lisp_Object swindow, pwindow; |
605be8af | 1506 | |
0def0403 RS |
1507 | /* See if the frame's selected window is either WINDOW |
1508 | or any subwindow of it, by finding all that window's parents | |
1509 | and comparing each one with WINDOW. */ | |
192c3131 | 1510 | swindow = FRAME_SELECTED_WINDOW (f); |
0def0403 | 1511 | |
192c3131 | 1512 | while (1) |
0def0403 | 1513 | { |
192c3131 RS |
1514 | pwindow = swindow; |
1515 | while (!NILP (pwindow)) | |
1516 | { | |
1517 | if (EQ (window, pwindow)) | |
1518 | break; | |
1519 | pwindow = XWINDOW (pwindow)->parent; | |
1520 | } | |
1521 | ||
1522 | /* If the window being deleted is not a parent of SWINDOW, | |
1523 | then SWINDOW is ok as the new selected window. */ | |
1524 | if (!EQ (window, pwindow)) | |
0def0403 | 1525 | break; |
192c3131 RS |
1526 | /* Otherwise, try another window for SWINDOW. */ |
1527 | swindow = Fnext_window (swindow, Qlambda, Qnil);; | |
1528 | ||
1529 | /* If we get back to the frame's selected window, | |
1530 | it means there was no acceptable alternative, | |
1531 | so we cannot delete. */ | |
1532 | if (EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
1533 | error ("Cannot delete window"); | |
0def0403 RS |
1534 | } |
1535 | ||
192c3131 RS |
1536 | /* If we need to change SWINDOW, do it. */ |
1537 | if (! EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
605be8af | 1538 | { |
605be8af JB |
1539 | /* If we're about to delete the selected window on the |
1540 | selected frame, then we should use Fselect_window to select | |
1541 | the new window. On the other hand, if we're about to | |
1542 | delete the selected window on any other frame, we shouldn't do | |
1543 | anything but set the frame's selected_window slot. */ | |
192c3131 | 1544 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) |
14d87dc9 | 1545 | Fselect_window (swindow, Qnil); |
605be8af | 1546 | else |
192c3131 | 1547 | FRAME_SELECTED_WINDOW (f) = swindow; |
605be8af JB |
1548 | } |
1549 | } | |
7ab12479 | 1550 | |
0d384044 RS |
1551 | /* Now we know we can delete this one. */ |
1552 | window_deletion_count++; | |
1553 | ||
7ab12479 JB |
1554 | tem = p->buffer; |
1555 | /* tem is null for dummy parent windows | |
1556 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1557 | if (!NILP (tem)) |
7ab12479 JB |
1558 | { |
1559 | unshow_buffer (p); | |
2d0834cc SM |
1560 | unchain_marker (XMARKER (p->pointm)); |
1561 | unchain_marker (XMARKER (p->start)); | |
7ab12479 JB |
1562 | } |
1563 | ||
05e71564 GM |
1564 | /* Free window glyph matrices. It is sure that they are allocated |
1565 | again when ADJUST_GLYPHS is called. Block input so that expose | |
1566 | events and other events that access glyph matrices are not | |
1567 | processed while we are changing them. */ | |
1568 | BLOCK_INPUT; | |
951f9df5 | 1569 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f))); |
5500c422 | 1570 | |
7ab12479 | 1571 | tem = p->next; |
265a9e55 | 1572 | if (!NILP (tem)) |
7ab12479 JB |
1573 | XWINDOW (tem)->prev = p->prev; |
1574 | ||
1575 | tem = p->prev; | |
265a9e55 | 1576 | if (!NILP (tem)) |
7ab12479 JB |
1577 | XWINDOW (tem)->next = p->next; |
1578 | ||
1579 | if (EQ (window, par->hchild)) | |
1580 | par->hchild = p->next; | |
1581 | if (EQ (window, par->vchild)) | |
1582 | par->vchild = p->next; | |
1583 | ||
1584 | /* Find one of our siblings to give our space to. */ | |
1585 | sib = p->prev; | |
265a9e55 | 1586 | if (NILP (sib)) |
7ab12479 JB |
1587 | { |
1588 | /* If p gives its space to its next sibling, that sibling needs | |
1589 | to have its top/left side pulled back to where p's is. | |
1590 | set_window_{height,width} will re-position the sibling's | |
1591 | children. */ | |
1592 | sib = p->next; | |
949cf20f KS |
1593 | XWINDOW (sib)->top_line = p->top_line; |
1594 | XWINDOW (sib)->left_col = p->left_col; | |
7ab12479 JB |
1595 | } |
1596 | ||
1597 | /* Stretch that sibling. */ | |
265a9e55 | 1598 | if (!NILP (par->vchild)) |
7ab12479 | 1599 | set_window_height (sib, |
949cf20f | 1600 | XFASTINT (XWINDOW (sib)->total_lines) + XFASTINT (p->total_lines), |
7ab12479 | 1601 | 1); |
265a9e55 | 1602 | if (!NILP (par->hchild)) |
7ab12479 | 1603 | set_window_width (sib, |
949cf20f | 1604 | XFASTINT (XWINDOW (sib)->total_cols) + XFASTINT (p->total_cols), |
7ab12479 JB |
1605 | 1); |
1606 | ||
1607 | /* If parent now has only one child, | |
1608 | put the child into the parent's place. */ | |
7ab12479 | 1609 | tem = par->hchild; |
265a9e55 | 1610 | if (NILP (tem)) |
7ab12479 | 1611 | tem = par->vchild; |
5494d7bc | 1612 | if (NILP (XWINDOW (tem)->next)) { |
7ab12479 | 1613 | replace_window (parent, tem); |
5494d7bc JD |
1614 | par = XWINDOW (tem); |
1615 | } | |
605be8af JB |
1616 | |
1617 | /* Since we may be deleting combination windows, we must make sure that | |
1618 | not only p but all its children have been marked as deleted. */ | |
1619 | if (! NILP (p->hchild)) | |
1620 | delete_all_subwindows (XWINDOW (p->hchild)); | |
1621 | else if (! NILP (p->vchild)) | |
1622 | delete_all_subwindows (XWINDOW (p->vchild)); | |
1623 | ||
1624 | /* Mark this window as deleted. */ | |
1625 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 | 1626 | |
5494d7bc JD |
1627 | if (! NILP (par->parent)) |
1628 | par = XWINDOW (par->parent); | |
1629 | ||
1630 | /* Check if we have a v/hchild with a v/hchild. In that case remove | |
1631 | one of them. */ | |
ae12ecd7 | 1632 | |
5494d7bc JD |
1633 | if (! NILP (par->vchild) && ! NILP (XWINDOW (par->vchild)->vchild)) |
1634 | { | |
1635 | p = XWINDOW (par->vchild); | |
1636 | par->vchild = p->vchild; | |
1637 | tem = p->vchild; | |
1638 | } | |
1639 | else if (! NILP (par->hchild) && ! NILP (XWINDOW (par->hchild)->hchild)) | |
1640 | { | |
1641 | p = XWINDOW (par->hchild); | |
1642 | par->hchild = p->hchild; | |
1643 | tem = p->hchild; | |
1644 | } | |
1645 | else | |
1646 | p = 0; | |
1647 | ||
1648 | if (p) | |
1649 | { | |
1650 | while (! NILP (tem)) { | |
1651 | XWINDOW (tem)->parent = p->parent; | |
1652 | if (NILP (XWINDOW (tem)->next)) | |
1653 | break; | |
1654 | tem = XWINDOW (tem)->next; | |
1655 | } | |
1656 | if (! NILP (tem)) { | |
1657 | /* The next of the v/hchild we are removing is now the next of the | |
1658 | last child for the v/hchild: | |
1659 | Before v/hchild -> v/hchild -> next1 -> next2 | |
1660 | | | |
1661 | -> next3 | |
1662 | After: v/hchild -> next1 -> next2 -> next3 | |
1663 | */ | |
1664 | XWINDOW (tem)->next = p->next; | |
1665 | if (! NILP (p->next)) | |
1666 | XWINDOW (p->next)->prev = tem; | |
1667 | } | |
1668 | p->next = p->prev = p->vchild = p->hchild = p->buffer = Qnil; | |
1669 | } | |
1670 | ||
1671 | ||
5500c422 | 1672 | /* Adjust glyph matrices. */ |
951f9df5 | 1673 | adjust_glyphs (f); |
05e71564 | 1674 | UNBLOCK_INPUT; |
7ab12479 | 1675 | } |
67492200 GM |
1676 | |
1677 | ||
7ab12479 | 1678 | \f |
67492200 GM |
1679 | /*********************************************************************** |
1680 | Window List | |
1681 | ***********************************************************************/ | |
1682 | ||
f95464e4 GM |
1683 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1684 | pointer. This is a callback function for foreach_window, used in | |
1685 | function window_list. */ | |
67492200 GM |
1686 | |
1687 | static int | |
f95464e4 | 1688 | add_window_to_list (w, user_data) |
67492200 | 1689 | struct window *w; |
f95464e4 | 1690 | void *user_data; |
67492200 | 1691 | { |
f95464e4 | 1692 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1693 | Lisp_Object window; |
1694 | XSETWINDOW (window, w); | |
212116d6 | 1695 | *list = Fcons (window, *list); |
67492200 GM |
1696 | return 1; |
1697 | } | |
1698 | ||
1699 | ||
1700 | /* Return a list of all windows, for use by next_window. If | |
1701 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1702 | list, cache it in Vwindow_list, and return that. */ | |
1703 | ||
1704 | static Lisp_Object | |
1705 | window_list () | |
1706 | { | |
1707 | if (!CONSP (Vwindow_list)) | |
1708 | { | |
1709 | Lisp_Object tail; | |
212116d6 | 1710 | |
67492200 GM |
1711 | Vwindow_list = Qnil; |
1712 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1713 | { |
1714 | Lisp_Object args[2]; | |
1715 | ||
1716 | /* We are visiting windows in canonical order, and add | |
1717 | new windows at the front of args[1], which means we | |
1718 | have to reverse this list at the end. */ | |
1719 | args[1] = Qnil; | |
1720 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
1721 | args[0] = Vwindow_list; | |
1722 | args[1] = Fnreverse (args[1]); | |
1723 | Vwindow_list = Fnconc (2, args); | |
1724 | } | |
67492200 | 1725 | } |
177c0ea7 | 1726 | |
67492200 GM |
1727 | return Vwindow_list; |
1728 | } | |
1729 | ||
1730 | ||
118ea242 GM |
1731 | /* Value is non-zero if WINDOW satisfies the constraints given by |
1732 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 1733 | |
118ea242 GM |
1734 | MINIBUF t means WINDOW may be minibuffer windows. |
1735 | `lambda' means WINDOW may not be a minibuffer window. | |
1736 | a window means a specific minibuffer window | |
67492200 | 1737 | |
118ea242 GM |
1738 | ALL_FRAMES t means search all frames, |
1739 | nil means search just current frame, | |
1740 | `visible' means search just visible frames, | |
1741 | 0 means search visible and iconified frames, | |
1742 | a window means search the frame that window belongs to, | |
1743 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
1744 | |
1745 | static int | |
118ea242 GM |
1746 | candidate_window_p (window, owindow, minibuf, all_frames) |
1747 | Lisp_Object window, owindow, minibuf, all_frames; | |
67492200 GM |
1748 | { |
1749 | struct window *w = XWINDOW (window); | |
1750 | struct frame *f = XFRAME (w->frame); | |
1751 | int candidate_p = 1; | |
1752 | ||
1753 | if (!BUFFERP (w->buffer)) | |
1754 | candidate_p = 0; | |
1755 | else if (MINI_WINDOW_P (w) | |
1756 | && (EQ (minibuf, Qlambda) | |
1757 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
1758 | { | |
1759 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
1760 | If it is a window, consider only that one. */ | |
1761 | candidate_p = 0; | |
1762 | } | |
118ea242 GM |
1763 | else if (EQ (all_frames, Qt)) |
1764 | candidate_p = 1; | |
67492200 | 1765 | else if (NILP (all_frames)) |
118ea242 GM |
1766 | { |
1767 | xassert (WINDOWP (owindow)); | |
1768 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
1769 | } | |
67492200 GM |
1770 | else if (EQ (all_frames, Qvisible)) |
1771 | { | |
1772 | FRAME_SAMPLE_VISIBILITY (f); | |
1773 | candidate_p = FRAME_VISIBLE_P (f); | |
1774 | } | |
1775 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
1776 | { | |
1777 | FRAME_SAMPLE_VISIBILITY (f); | |
1778 | candidate_p = FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f); | |
1779 | } | |
67492200 GM |
1780 | else if (WINDOWP (all_frames)) |
1781 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
1782 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
1783 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
1784 | else if (FRAMEP (all_frames)) |
1785 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
1786 | |
1787 | return candidate_p; | |
1788 | } | |
1789 | ||
1790 | ||
1791 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
1792 | Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and | |
1793 | ALL_FRAMES. */ | |
1794 | ||
1795 | static void | |
1796 | decode_next_window_args (window, minibuf, all_frames) | |
1797 | Lisp_Object *window, *minibuf, *all_frames; | |
1798 | { | |
1799 | if (NILP (*window)) | |
1800 | *window = selected_window; | |
1801 | else | |
b7826503 | 1802 | CHECK_LIVE_WINDOW (*window); |
177c0ea7 | 1803 | |
67492200 GM |
1804 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
1805 | does. */ | |
1806 | if (NILP (*minibuf)) | |
1807 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
1808 | else if (!EQ (*minibuf, Qt)) | |
1809 | *minibuf = Qlambda; | |
177c0ea7 | 1810 | |
67492200 GM |
1811 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
1812 | => count none of them, or a specific minibuffer window (the | |
1813 | active one) to count. */ | |
1814 | ||
1815 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
1816 | if (NILP (*all_frames)) | |
1817 | *all_frames = (!EQ (*minibuf, Qlambda) | |
1818 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
1819 | : Qnil); | |
1820 | else if (EQ (*all_frames, Qvisible)) | |
1821 | ; | |
0f8fe9a2 | 1822 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
1823 | ; |
1824 | else if (FRAMEP (*all_frames)) | |
1825 | ; | |
1826 | else if (!EQ (*all_frames, Qt)) | |
1827 | *all_frames = Qnil; | |
177c0ea7 | 1828 | |
67492200 GM |
1829 | /* Now *ALL_FRAMES is t meaning search all frames, nil meaning |
1830 | search just current frame, `visible' meaning search just visible | |
1831 | frames, 0 meaning search visible and iconified frames, or a | |
1832 | window, meaning search the frame that window belongs to, or a | |
1833 | frame, meaning consider windows on that frame, only. */ | |
1834 | } | |
1835 | ||
1836 | ||
1837 | /* Return the next or previous window of WINDOW in canonical ordering | |
1838 | of windows. NEXT_P non-zero means return the next window. See the | |
1839 | documentation string of next-window for the meaning of MINIBUF and | |
1840 | ALL_FRAMES. */ | |
1841 | ||
1842 | static Lisp_Object | |
1843 | next_window (window, minibuf, all_frames, next_p) | |
1844 | Lisp_Object window, minibuf, all_frames; | |
1845 | int next_p; | |
1846 | { | |
1847 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 1848 | |
67492200 GM |
1849 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
1850 | return the first window on the frame. */ | |
1851 | if (FRAMEP (all_frames) | |
1852 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
1853 | return Fframe_first_window (all_frames); | |
177c0ea7 | 1854 | |
212116d6 | 1855 | if (next_p) |
67492200 GM |
1856 | { |
1857 | Lisp_Object list; | |
177c0ea7 | 1858 | |
67492200 GM |
1859 | /* Find WINDOW in the list of all windows. */ |
1860 | list = Fmemq (window, window_list ()); | |
1861 | ||
1862 | /* Scan forward from WINDOW to the end of the window list. */ | |
1863 | if (CONSP (list)) | |
1864 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 1865 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1866 | break; |
1867 | ||
1868 | /* Scan from the start of the window list up to WINDOW. */ | |
1869 | if (!CONSP (list)) | |
1870 | for (list = Vwindow_list; | |
1871 | CONSP (list) && !EQ (XCAR (list), window); | |
1872 | list = XCDR (list)) | |
118ea242 | 1873 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1874 | break; |
1875 | ||
1876 | if (CONSP (list)) | |
1877 | window = XCAR (list); | |
1878 | } | |
1879 | else | |
1880 | { | |
1881 | Lisp_Object candidate, list; | |
177c0ea7 | 1882 | |
67492200 GM |
1883 | /* Scan through the list of windows for candidates. If there are |
1884 | candidate windows in front of WINDOW, the last one of these | |
1885 | is the one we want. If there are candidates following WINDOW | |
1886 | in the list, again the last one of these is the one we want. */ | |
1887 | candidate = Qnil; | |
1888 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
1889 | { | |
1890 | if (EQ (XCAR (list), window)) | |
1891 | { | |
1892 | if (WINDOWP (candidate)) | |
1893 | break; | |
1894 | } | |
118ea242 GM |
1895 | else if (candidate_window_p (XCAR (list), window, minibuf, |
1896 | all_frames)) | |
67492200 GM |
1897 | candidate = XCAR (list); |
1898 | } | |
1899 | ||
1900 | if (WINDOWP (candidate)) | |
1901 | window = candidate; | |
1902 | } | |
1903 | ||
1904 | return window; | |
1905 | } | |
7ab12479 | 1906 | |
7ab12479 | 1907 | |
26f6279d | 1908 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
fdb82f93 PJ |
1909 | doc: /* Return next window after WINDOW in canonical ordering of windows. |
1910 | If omitted, WINDOW defaults to the selected window. | |
1911 | ||
1912 | Optional second arg MINIBUF t means count the minibuffer window even | |
1913 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1914 | it is active. MINIBUF neither t nor nil means not to count the | |
1915 | minibuffer even if it is active. | |
1916 | ||
1917 | Several frames may share a single minibuffer; if the minibuffer | |
1918 | counts, all windows on all frames that share that minibuffer count | |
1919 | too. Therefore, `next-window' can be used to iterate through the | |
1920 | set of windows even when the minibuffer is on another frame. If the | |
1921 | minibuffer does not count, only windows from WINDOW's frame count. | |
1922 | ||
1923 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1924 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1925 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1926 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1927 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1928 | Anything else means restrict to WINDOW's frame. | |
1929 | ||
1930 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1931 | `next-window' to iterate through the entire cycle of acceptable | |
1932 | windows, eventually ending up back at the window you started with. | |
1933 | `previous-window' traverses the same cycle, in the reverse order. */) | |
1934 | (window, minibuf, all_frames) | |
67492200 | 1935 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1936 | { |
67492200 | 1937 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
1938 | } |
1939 | ||
67492200 | 1940 | |
26f6279d | 1941 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
fdb82f93 PJ |
1942 | doc: /* Return the window preceding WINDOW in canonical ordering of windows. |
1943 | If omitted, WINDOW defaults to the selected window. | |
1944 | ||
1945 | Optional second arg MINIBUF t means count the minibuffer window even | |
1946 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1947 | it is active. MINIBUF neither t nor nil means not to count the | |
1948 | minibuffer even if it is active. | |
1949 | ||
1950 | Several frames may share a single minibuffer; if the minibuffer | |
1951 | counts, all windows on all frames that share that minibuffer count | |
1952 | too. Therefore, `previous-window' can be used to iterate through | |
1953 | the set of windows even when the minibuffer is on another frame. If | |
1954 | the minibuffer does not count, only windows from WINDOW's frame count | |
1955 | ||
1956 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1957 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1958 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1959 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1960 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1961 | Anything else means restrict to WINDOW's frame. | |
1962 | ||
1963 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1964 | `previous-window' to iterate through the entire cycle of acceptable | |
1965 | windows, eventually ending up back at the window you started with. | |
1966 | `next-window' traverses the same cycle, in the reverse order. */) | |
1967 | (window, minibuf, all_frames) | |
67492200 | 1968 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1969 | { |
67492200 | 1970 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
1971 | } |
1972 | ||
67492200 | 1973 | |
62c07cc7 | 1974 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
fdb82f93 PJ |
1975 | doc: /* Select the ARG'th different window on this frame. |
1976 | All windows on current frame are arranged in a cyclic order. | |
1977 | This command selects the window ARG steps away in that order. | |
c2755926 | 1978 | A negative ARG moves in the opposite order. The optional second |
8cd0d661 | 1979 | argument ALL-FRAMES has the same meaning as in `next-window', which see. */) |
fdb82f93 | 1980 | (arg, all_frames) |
67492200 | 1981 | Lisp_Object arg, all_frames; |
7ab12479 | 1982 | { |
67492200 GM |
1983 | Lisp_Object window; |
1984 | int i; | |
7ab12479 | 1985 | |
b7826503 | 1986 | CHECK_NUMBER (arg); |
67492200 | 1987 | window = selected_window; |
177c0ea7 | 1988 | |
67492200 GM |
1989 | for (i = XINT (arg); i > 0; --i) |
1990 | window = Fnext_window (window, Qnil, all_frames); | |
1991 | for (; i < 0; ++i) | |
1992 | window = Fprevious_window (window, Qnil, all_frames); | |
50e88778 | 1993 | |
14d87dc9 | 1994 | Fselect_window (window, Qnil); |
7ab12479 JB |
1995 | return Qnil; |
1996 | } | |
67492200 GM |
1997 | |
1998 | ||
1999 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, | |
fdb82f93 PJ |
2000 | doc: /* Return a list of windows on FRAME, starting with WINDOW. |
2001 | FRAME nil or omitted means use the selected frame. | |
2002 | WINDOW nil or omitted means use the selected window. | |
2003 | MINIBUF t means include the minibuffer window, even if it isn't active. | |
2004 | MINIBUF nil or omitted means include the minibuffer window only | |
2005 | if it's active. | |
2006 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2007 | (frame, minibuf, window) | |
cd2904bd GM |
2008 | Lisp_Object frame, minibuf, window; |
2009 | { | |
cd2904bd | 2010 | if (NILP (window)) |
acc6289a SM |
2011 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
2012 | CHECK_WINDOW (window); | |
cd2904bd GM |
2013 | if (NILP (frame)) |
2014 | frame = selected_frame; | |
2015 | ||
2016 | if (!EQ (frame, XWINDOW (window)->frame)) | |
2017 | error ("Window is on a different frame"); | |
2018 | ||
2019 | return window_list_1 (window, minibuf, frame); | |
2020 | } | |
2021 | ||
2022 | ||
2023 | /* Return a list of windows in canonical ordering. Arguments are like | |
2024 | for `next-window'. */ | |
2025 | ||
2026 | static Lisp_Object | |
2027 | window_list_1 (window, minibuf, all_frames) | |
069f5950 | 2028 | Lisp_Object window, minibuf, all_frames; |
67492200 | 2029 | { |
403de3b4 | 2030 | Lisp_Object tail, list, rest; |
67492200 GM |
2031 | |
2032 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2033 | list = Qnil; | |
177c0ea7 | 2034 | |
67492200 | 2035 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2036 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2037 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2038 | |
403de3b4 RS |
2039 | /* Rotate the list to start with WINDOW. */ |
2040 | list = Fnreverse (list); | |
2041 | rest = Fmemq (window, list); | |
2042 | if (!NILP (rest) && !EQ (rest, list)) | |
2043 | { | |
1725a7c9 | 2044 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2045 | ; |
2046 | XSETCDR (tail, Qnil); | |
2047 | list = nconc2 (rest, list); | |
2048 | } | |
2049 | return list; | |
67492200 GM |
2050 | } |
2051 | ||
2052 | ||
7ab12479 JB |
2053 | \f |
2054 | /* Look at all windows, performing an operation specified by TYPE | |
2055 | with argument OBJ. | |
75d8f668 | 2056 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2057 | Qnil, look at just the selected frame; |
89bca612 | 2058 | Qvisible, look at visible frames; |
75d8f668 | 2059 | a frame, just look at windows on that frame. |
85fe3b5e | 2060 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2061 | |
2062 | enum window_loop | |
2063 | { | |
2064 | WINDOW_LOOP_UNUSED, | |
2065 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
2066 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
2067 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
2068 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
2069 | GET_LARGEST_WINDOW, | |
3f8ab7bd | 2070 | UNSHOW_BUFFER, /* Arg is buffer */ |
e661376d | 2071 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ |
3f8ab7bd | 2072 | CHECK_ALL_WINDOWS |
7ab12479 JB |
2073 | }; |
2074 | ||
2075 | static Lisp_Object | |
44fa5b1e | 2076 | window_loop (type, obj, mini, frames) |
7ab12479 | 2077 | enum window_loop type; |
118ea242 | 2078 | Lisp_Object obj, frames; |
7ab12479 JB |
2079 | int mini; |
2080 | { | |
118ea242 GM |
2081 | Lisp_Object window, windows, best_window, frame_arg; |
2082 | struct frame *f; | |
ffdc852d | 2083 | struct gcpro gcpro1; |
177c0ea7 | 2084 | |
44fa5b1e JB |
2085 | /* If we're only looping through windows on a particular frame, |
2086 | frame points to that frame. If we're looping through windows | |
2087 | on all frames, frame is 0. */ | |
2088 | if (FRAMEP (frames)) | |
118ea242 | 2089 | f = XFRAME (frames); |
44fa5b1e | 2090 | else if (NILP (frames)) |
118ea242 | 2091 | f = SELECTED_FRAME (); |
7ab12479 | 2092 | else |
118ea242 | 2093 | f = NULL; |
177c0ea7 | 2094 | |
118ea242 | 2095 | if (f) |
89bca612 | 2096 | frame_arg = Qlambda; |
0f8fe9a2 | 2097 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2098 | frame_arg = frames; |
89bca612 RS |
2099 | else if (EQ (frames, Qvisible)) |
2100 | frame_arg = frames; | |
118ea242 GM |
2101 | else |
2102 | frame_arg = Qt; | |
7ab12479 | 2103 | |
89bca612 RS |
2104 | /* frame_arg is Qlambda to stick to one frame, |
2105 | Qvisible to consider all visible frames, | |
2106 | or Qt otherwise. */ | |
2107 | ||
7ab12479 | 2108 | /* Pick a window to start with. */ |
017b2bad | 2109 | if (WINDOWP (obj)) |
118ea242 GM |
2110 | window = obj; |
2111 | else if (f) | |
2112 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2113 | else |
118ea242 | 2114 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2115 | |
cd2904bd | 2116 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2117 | GCPRO1 (windows); |
7ab12479 | 2118 | best_window = Qnil; |
118ea242 | 2119 | |
e67a1dea | 2120 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2121 | { |
118ea242 | 2122 | struct window *w; |
177c0ea7 | 2123 | |
118ea242 GM |
2124 | window = XCAR (windows); |
2125 | w = XWINDOW (window); | |
177c0ea7 | 2126 | |
118ea242 GM |
2127 | /* Note that we do not pay attention here to whether the frame |
2128 | is visible, since Fwindow_list skips non-visible frames if | |
2129 | that is desired, under the control of frame_arg. */ | |
2130 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
2131 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
2132 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
2133 | || (mini && minibuf_level > 0)) |
2134 | switch (type) | |
2135 | { | |
2136 | case GET_BUFFER_WINDOW: | |
118ea242 | 2137 | if (EQ (w->buffer, obj) |
5c204627 RS |
2138 | /* Don't find any minibuffer window |
2139 | except the one that is currently in use. */ | |
118ea242 GM |
2140 | && (MINI_WINDOW_P (w) |
2141 | ? EQ (window, minibuf_window) | |
2142 | : 1)) | |
2143 | { | |
5ddc1b75 GM |
2144 | if (NILP (best_window)) |
2145 | best_window = window; | |
2146 | else if (EQ (window, selected_window)) | |
2147 | /* For compatibility with 20.x, prefer to return | |
2148 | selected-window. */ | |
2149 | best_window = window; | |
118ea242 | 2150 | } |
7ab12479 JB |
2151 | break; |
2152 | ||
2153 | case GET_LRU_WINDOW: | |
20b69789 SM |
2154 | /* `obj' is an integer encoding a bitvector. |
2155 | `obj & 1' means consider only full-width windows. | |
2156 | `obj & 2' means consider also dedicated windows. */ | |
2157 | if (((XINT (obj) & 1) && !WINDOW_FULL_WIDTH_P (w)) | |
3f489dc7 | 2158 | || (!(XINT (obj) & 2) && !NILP (w->dedicated)) |
20b69789 SM |
2159 | /* Minibuffer windows are always ignored. */ |
2160 | || MINI_WINDOW_P (w)) | |
7ab12479 | 2161 | break; |
265a9e55 | 2162 | if (NILP (best_window) |
7ab12479 | 2163 | || (XFASTINT (XWINDOW (best_window)->use_time) |
118ea242 GM |
2164 | > XFASTINT (w->use_time))) |
2165 | best_window = window; | |
7ab12479 JB |
2166 | break; |
2167 | ||
2168 | case DELETE_OTHER_WINDOWS: | |
118ea242 GM |
2169 | if (!EQ (window, obj)) |
2170 | Fdelete_window (window); | |
7ab12479 JB |
2171 | break; |
2172 | ||
2173 | case DELETE_BUFFER_WINDOWS: | |
118ea242 | 2174 | if (EQ (w->buffer, obj)) |
7ab12479 | 2175 | { |
118ea242 | 2176 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
3548e138 RS |
2177 | |
2178 | /* If this window is dedicated, and in a frame of its own, | |
2179 | kill the frame. */ | |
118ea242 GM |
2180 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2181 | && !NILP (w->dedicated) | |
3548e138 | 2182 | && other_visible_frames (f)) |
7ab12479 | 2183 | { |
3548e138 RS |
2184 | /* Skip the other windows on this frame. |
2185 | There might be one, the minibuffer! */ | |
118ea242 GM |
2186 | while (CONSP (XCDR (windows)) |
2187 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2188 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2189 | windows = XCDR (windows); | |
177c0ea7 | 2190 | |
3548e138 | 2191 | /* Now we can safely delete the frame. */ |
118ea242 GM |
2192 | Fdelete_frame (w->frame, Qnil); |
2193 | } | |
2194 | else if (NILP (w->parent)) | |
2195 | { | |
2196 | /* If we're deleting the buffer displayed in the | |
2197 | only window on the frame, find a new buffer to | |
2198 | display there. */ | |
2199 | Lisp_Object buffer; | |
2200 | buffer = Fother_buffer (obj, Qnil, w->frame); | |
949cf20f | 2201 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2202 | if (EQ (window, selected_window)) |
2203 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2204 | } |
2205 | else | |
118ea242 | 2206 | Fdelete_window (window); |
7ab12479 JB |
2207 | } |
2208 | break; | |
2209 | ||
2210 | case GET_LARGEST_WINDOW: | |
20b69789 | 2211 | { /* nil `obj' means to ignore dedicated windows. */ |
118ea242 | 2212 | /* Ignore dedicated windows and minibuffers. */ |
3f489dc7 | 2213 | if (MINI_WINDOW_P (w) || (NILP (obj) && !NILP (w->dedicated))) |
118ea242 | 2214 | break; |
177c0ea7 | 2215 | |
c930dfab | 2216 | if (NILP (best_window)) |
118ea242 | 2217 | best_window = window; |
c930dfab GM |
2218 | else |
2219 | { | |
2220 | struct window *b = XWINDOW (best_window); | |
949cf20f KS |
2221 | if (XFASTINT (w->total_lines) * XFASTINT (w->total_cols) |
2222 | > XFASTINT (b->total_lines) * XFASTINT (b->total_cols)) | |
c930dfab GM |
2223 | best_window = window; |
2224 | } | |
7ab12479 JB |
2225 | } |
2226 | break; | |
2227 | ||
2228 | case UNSHOW_BUFFER: | |
118ea242 | 2229 | if (EQ (w->buffer, obj)) |
7ab12479 | 2230 | { |
118ea242 GM |
2231 | Lisp_Object buffer; |
2232 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 2233 | |
7ab12479 | 2234 | /* Find another buffer to show in this window. */ |
118ea242 | 2235 | buffer = Fother_buffer (obj, Qnil, w->frame); |
177c0ea7 | 2236 | |
38ab08d1 RS |
2237 | /* If this window is dedicated, and in a frame of its own, |
2238 | kill the frame. */ | |
118ea242 GM |
2239 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2240 | && !NILP (w->dedicated) | |
38ab08d1 | 2241 | && other_visible_frames (f)) |
45945a7b RS |
2242 | { |
2243 | /* Skip the other windows on this frame. | |
2244 | There might be one, the minibuffer! */ | |
118ea242 GM |
2245 | while (CONSP (XCDR (windows)) |
2246 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2247 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2248 | windows = XCDR (windows); | |
177c0ea7 | 2249 | |
45945a7b | 2250 | /* Now we can safely delete the frame. */ |
118ea242 | 2251 | Fdelete_frame (w->frame, Qnil); |
45945a7b | 2252 | } |
a5731348 SM |
2253 | else if (!NILP (w->dedicated) && !NILP (w->parent)) |
2254 | { | |
2255 | Lisp_Object window; | |
2256 | XSETWINDOW (window, w); | |
2257 | /* If this window is dedicated and not the only window | |
2258 | in its frame, then kill it. */ | |
2259 | Fdelete_window (window); | |
2260 | } | |
38ab08d1 | 2261 | else |
38ab08d1 RS |
2262 | { |
2263 | /* Otherwise show a different buffer in the window. */ | |
118ea242 | 2264 | w->dedicated = Qnil; |
949cf20f | 2265 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2266 | if (EQ (window, selected_window)) |
2267 | Fset_buffer (w->buffer); | |
38ab08d1 | 2268 | } |
7ab12479 JB |
2269 | } |
2270 | break; | |
3f8ab7bd | 2271 | |
e661376d KS |
2272 | case REDISPLAY_BUFFER_WINDOWS: |
2273 | if (EQ (w->buffer, obj)) | |
2274 | { | |
2275 | mark_window_display_accurate (window, 0); | |
40c6ee74 KS |
2276 | w->update_mode_line = Qt; |
2277 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; | |
2278 | ++update_mode_lines; | |
e661376d KS |
2279 | best_window = window; |
2280 | } | |
2281 | break; | |
2282 | ||
3f8ab7bd RS |
2283 | /* Check for a window that has a killed buffer. */ |
2284 | case CHECK_ALL_WINDOWS: | |
118ea242 GM |
2285 | if (! NILP (w->buffer) |
2286 | && NILP (XBUFFER (w->buffer)->name)) | |
3f8ab7bd | 2287 | abort (); |
118ea242 | 2288 | break; |
6bbd7a29 GM |
2289 | |
2290 | case WINDOW_LOOP_UNUSED: | |
2291 | break; | |
7ab12479 | 2292 | } |
7ab12479 | 2293 | } |
7ab12479 | 2294 | |
118ea242 | 2295 | UNGCPRO; |
7ab12479 | 2296 | return best_window; |
37962e60 | 2297 | } |
605be8af | 2298 | |
3f8ab7bd RS |
2299 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2300 | ||
233a4a2c | 2301 | void |
3f8ab7bd RS |
2302 | check_all_windows () |
2303 | { | |
2304 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2305 | } | |
2306 | ||
3cbb13c8 | 2307 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 2, 0, |
fdb82f93 | 2308 | doc: /* Return the window least recently selected or used for display. |
a899216f | 2309 | Return a full-width window if possible. |
c2755926 | 2310 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2311 | A dedicated window is never a candidate, unless DEDICATED is non-nil, |
2312 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2313 | If optional argument FRAME is `visible', search all visible frames. |
2314 | If FRAME is 0, search all visible and iconified frames. | |
2315 | If FRAME is t, search all frames. | |
2316 | If FRAME is nil, search only the selected frame. | |
2317 | If FRAME is a frame, search only that frame. */) | |
3cbb13c8 SM |
2318 | (frame, dedicated) |
2319 | Lisp_Object frame, dedicated; | |
7ab12479 JB |
2320 | { |
2321 | register Lisp_Object w; | |
2322 | /* First try for a window that is full-width */ | |
20b69789 SM |
2323 | w = window_loop (GET_LRU_WINDOW, |
2324 | NILP (dedicated) ? make_number (1) : make_number (3), | |
2325 | 0, frame); | |
265a9e55 | 2326 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
2327 | return w; |
2328 | /* If none of them, try the rest */ | |
20b69789 SM |
2329 | return window_loop (GET_LRU_WINDOW, |
2330 | NILP (dedicated) ? make_number (0) : make_number (2), | |
2331 | 0, frame); | |
7ab12479 JB |
2332 | } |
2333 | ||
3cbb13c8 | 2334 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 2, 0, |
fdb82f93 | 2335 | doc: /* Return the largest window in area. |
c2755926 | 2336 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2337 | A dedicated window is never a candidate unless DEDICATED is non-nil, |
2338 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2339 | If optional argument FRAME is `visible', search all visible frames. |
2340 | If FRAME is 0, search all visible and iconified frames. | |
2341 | If FRAME is t, search all frames. | |
2342 | If FRAME is nil, search only the selected frame. | |
2343 | If FRAME is a frame, search only that frame. */) | |
3cbb13c8 SM |
2344 | (frame, dedicated) |
2345 | Lisp_Object frame, dedicated; | |
7ab12479 | 2346 | { |
20b69789 | 2347 | return window_loop (GET_LARGEST_WINDOW, dedicated, 0, |
44fa5b1e | 2348 | frame); |
7ab12479 JB |
2349 | } |
2350 | ||
2351 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
fdb82f93 | 2352 | doc: /* Return a window currently displaying BUFFER, or nil if none. |
c2755926 | 2353 | BUFFER can be a buffer or a buffer name. |
fdb82f93 PJ |
2354 | If optional argument FRAME is `visible', search all visible frames. |
2355 | If optional argument FRAME is 0, search all visible and iconified frames. | |
2356 | If FRAME is t, search all frames. | |
2357 | If FRAME is nil, search only the selected frame. | |
2358 | If FRAME is a frame, search only that frame. */) | |
2359 | (buffer, frame) | |
2360 | Lisp_Object buffer, frame; | |
7ab12479 JB |
2361 | { |
2362 | buffer = Fget_buffer (buffer); | |
017b2bad | 2363 | if (BUFFERP (buffer)) |
44fa5b1e | 2364 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
2365 | else |
2366 | return Qnil; | |
2367 | } | |
2368 | ||
2369 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
fdb82f93 PJ |
2370 | 0, 1, "", |
2371 | doc: /* Make WINDOW (or the selected window) fill its frame. | |
2372 | Only the frame WINDOW is on is affected. | |
2373 | This function tries to reduce display jumps | |
2374 | by keeping the text previously visible in WINDOW | |
2375 | in the same place on the frame. Doing this depends on | |
2376 | the value of (window-start WINDOW), so if calling this function | |
2377 | in a program gives strange scrolling, make sure the window-start | |
2378 | value is reasonable when this function is called. */) | |
2379 | (window) | |
7ab12479 JB |
2380 | Lisp_Object window; |
2381 | { | |
2382 | struct window *w; | |
00d3d838 | 2383 | int startpos; |
85fe3b5e | 2384 | int top, new_top; |
7ab12479 | 2385 | |
265a9e55 | 2386 | if (NILP (window)) |
7ab12479 JB |
2387 | window = selected_window; |
2388 | else | |
b7826503 | 2389 | CHECK_LIVE_WINDOW (window); |
7ab12479 | 2390 | w = XWINDOW (window); |
a2b38b3c | 2391 | |
00d3d838 | 2392 | startpos = marker_position (w->start); |
949cf20f | 2393 | top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 2394 | |
a2b38b3c RS |
2395 | if (MINI_WINDOW_P (w) && top > 0) |
2396 | error ("Can't expand minibuffer to full frame"); | |
2397 | ||
70728a80 | 2398 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 2399 | |
00d3d838 KH |
2400 | /* Try to minimize scrolling, by setting the window start to the point |
2401 | will cause the text at the old window start to be at the same place | |
2402 | on the frame. But don't try to do this if the window start is | |
2403 | outside the visible portion (as might happen when the display is | |
2404 | not current, due to typeahead). */ | |
949cf20f | 2405 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
85fe3b5e GM |
2406 | if (new_top != top |
2407 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
00d3d838 KH |
2408 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) |
2409 | { | |
2410 | struct position pos; | |
2411 | struct buffer *obuf = current_buffer; | |
2412 | ||
2413 | Fset_buffer (w->buffer); | |
2414 | /* This computation used to temporarily move point, but that can | |
2415 | have unwanted side effects due to text properties. */ | |
0383eb57 | 2416 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 2417 | |
b73ea88e | 2418 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
85fe3b5e | 2419 | w->window_end_valid = Qnil; |
b73ea88e RS |
2420 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE |
2421 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 2422 | : Qnil); |
80622eec RS |
2423 | /* We need to do this, so that the window-scroll-functions |
2424 | get called. */ | |
4d047f50 | 2425 | w->optional_new_start = Qt; |
00d3d838 KH |
2426 | |
2427 | set_buffer_internal (obuf); | |
2428 | } | |
5500c422 | 2429 | |
7ab12479 JB |
2430 | return Qnil; |
2431 | } | |
2432 | ||
2433 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
fdb82f93 PJ |
2434 | 1, 2, "bDelete windows on (buffer): ", |
2435 | doc: /* Delete all windows showing BUFFER. | |
c2755926 | 2436 | BUFFER must be a buffer or the name of an existing buffer. |
fdb82f93 PJ |
2437 | Optional second argument FRAME controls which frames are affected. |
2438 | If optional argument FRAME is `visible', search all visible frames. | |
2439 | If FRAME is 0, search all visible and iconified frames. | |
2440 | If FRAME is nil, search all frames. | |
2441 | If FRAME is t, search only the selected frame. | |
2442 | If FRAME is a frame, search only that frame. */) | |
2443 | (buffer, frame) | |
26f6279d | 2444 | Lisp_Object buffer, frame; |
7ab12479 | 2445 | { |
26f6279d JB |
2446 | /* FRAME uses t and nil to mean the opposite of what window_loop |
2447 | expects. */ | |
c520265e RS |
2448 | if (NILP (frame)) |
2449 | frame = Qt; | |
2450 | else if (EQ (frame, Qt)) | |
2451 | frame = Qnil; | |
26f6279d | 2452 | |
265a9e55 | 2453 | if (!NILP (buffer)) |
7ab12479 JB |
2454 | { |
2455 | buffer = Fget_buffer (buffer); | |
b7826503 | 2456 | CHECK_BUFFER (buffer); |
26f6279d | 2457 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 | 2458 | } |
177c0ea7 | 2459 | |
7ab12479 JB |
2460 | return Qnil; |
2461 | } | |
2462 | ||
2463 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
fdb82f93 PJ |
2464 | Sreplace_buffer_in_windows, |
2465 | 1, 1, "bReplace buffer in windows: ", | |
c2755926 LT |
2466 | doc: /* Replace BUFFER with some other buffer in all windows showing it. |
2467 | BUFFER may be a buffer or the name of an existing buffer. */) | |
fdb82f93 | 2468 | (buffer) |
7ab12479 JB |
2469 | Lisp_Object buffer; |
2470 | { | |
265a9e55 | 2471 | if (!NILP (buffer)) |
7ab12479 JB |
2472 | { |
2473 | buffer = Fget_buffer (buffer); | |
b7826503 | 2474 | CHECK_BUFFER (buffer); |
7ab12479 JB |
2475 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); |
2476 | } | |
2477 | return Qnil; | |
2478 | } | |
ff58478b RS |
2479 | |
2480 | /* Replace BUFFER with some other buffer in all windows | |
2481 | of all frames, even those on other keyboards. */ | |
2482 | ||
2483 | void | |
2484 | replace_buffer_in_all_windows (buffer) | |
2485 | Lisp_Object buffer; | |
2486 | { | |
27abb84f | 2487 | #ifdef MULTI_KBOARD |
ff58478b RS |
2488 | Lisp_Object tail, frame; |
2489 | ||
ff58478b RS |
2490 | /* A single call to window_loop won't do the job |
2491 | because it only considers frames on the current keyboard. | |
2492 | So loop manually over frames, and handle each one. */ | |
2493 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 2494 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 2495 | #else |
db7f721d | 2496 | window_loop (UNSHOW_BUFFER, buffer, 1, Qt); |
ff58478b RS |
2497 | #endif |
2498 | } | |
7ab12479 JB |
2499 | \f |
2500 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
2501 | |
2502 | /* The smallest acceptable dimensions for a window. Anything smaller | |
2503 | might crash Emacs. */ | |
5500c422 | 2504 | |
a481b3ea | 2505 | #define MIN_SAFE_WINDOW_WIDTH (2) |
dc1ab1ee | 2506 | #define MIN_SAFE_WINDOW_HEIGHT (1) |
a481b3ea JB |
2507 | |
2508 | /* Make sure that window_min_height and window_min_width are | |
2509 | not too small; if they are, set them to safe minima. */ | |
2510 | ||
2511 | static void | |
2512 | check_min_window_sizes () | |
2513 | { | |
2514 | /* Smaller values might permit a crash. */ | |
2515 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
2516 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
2517 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
2518 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
2519 | } | |
2520 | ||
2521 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
2522 | minimum allowable size. */ | |
5500c422 | 2523 | |
605be8af | 2524 | void |
a481b3ea | 2525 | check_frame_size (frame, rows, cols) |
605be8af JB |
2526 | FRAME_PTR frame; |
2527 | int *rows, *cols; | |
a481b3ea | 2528 | { |
628df3bf | 2529 | /* For height, we have to see: |
54b8bcb5 RS |
2530 | how many windows the frame has at minimum (one or two), |
2531 | and whether it has a menu bar or other special stuff at the top. */ | |
2532 | int min_height | |
2533 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
2534 | ? MIN_SAFE_WINDOW_HEIGHT | |
2535 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 2536 | |
5500c422 GM |
2537 | if (FRAME_TOP_MARGIN (frame) > 0) |
2538 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2539 | |
2540 | if (*rows < min_height) | |
2541 | *rows = min_height; | |
2542 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2543 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2544 | } | |
2545 | ||
c1636aa6 | 2546 | |
233a4a2c GM |
2547 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
2548 | check if W's width can be changed, otherwise check W's height. | |
2549 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
2550 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
2551 | either. */ | |
c1636aa6 | 2552 | |
233a4a2c GM |
2553 | static int |
2554 | window_fixed_size_p (w, width_p, check_siblings_p) | |
2555 | struct window *w; | |
2556 | int width_p, check_siblings_p; | |
2557 | { | |
2558 | int fixed_p; | |
2559 | struct window *c; | |
177c0ea7 | 2560 | |
233a4a2c GM |
2561 | if (!NILP (w->hchild)) |
2562 | { | |
2563 | c = XWINDOW (w->hchild); | |
177c0ea7 | 2564 | |
233a4a2c GM |
2565 | if (width_p) |
2566 | { | |
2567 | /* A horiz. combination is fixed-width if all of if its | |
2568 | children are. */ | |
2569 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2570 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2571 | fixed_p = c == NULL; | |
2572 | } | |
2573 | else | |
2574 | { | |
2575 | /* A horiz. combination is fixed-height if one of if its | |
2576 | children is. */ | |
2577 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2578 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2579 | fixed_p = c != NULL; | |
2580 | } | |
2581 | } | |
2582 | else if (!NILP (w->vchild)) | |
2583 | { | |
2584 | c = XWINDOW (w->vchild); | |
177c0ea7 | 2585 | |
233a4a2c GM |
2586 | if (width_p) |
2587 | { | |
2588 | /* A vert. combination is fixed-width if one of if its | |
2589 | children is. */ | |
2590 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2591 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2592 | fixed_p = c != NULL; | |
2593 | } | |
2594 | else | |
2595 | { | |
2596 | /* A vert. combination is fixed-height if all of if its | |
2597 | children are. */ | |
2598 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2599 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2600 | fixed_p = c == NULL; | |
2601 | } | |
2602 | } | |
2603 | else if (BUFFERP (w->buffer)) | |
2604 | { | |
3df0580e AS |
2605 | struct buffer *old = current_buffer; |
2606 | Lisp_Object val; | |
177c0ea7 | 2607 | |
3df0580e AS |
2608 | current_buffer = XBUFFER (w->buffer); |
2609 | val = find_symbol_value (Qwindow_size_fixed); | |
2610 | current_buffer = old; | |
a34dfd12 | 2611 | |
3df0580e AS |
2612 | fixed_p = 0; |
2613 | if (!EQ (val, Qunbound)) | |
2614 | { | |
2615 | fixed_p = !NILP (val); | |
177c0ea7 | 2616 | |
3df0580e AS |
2617 | if (fixed_p |
2618 | && ((EQ (val, Qheight) && width_p) | |
2619 | || (EQ (val, Qwidth) && !width_p))) | |
2620 | fixed_p = 0; | |
233a4a2c GM |
2621 | } |
2622 | ||
2623 | /* Can't tell if this one is resizable without looking at | |
2624 | siblings. If all siblings are fixed-size this one is too. */ | |
2625 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2626 | { | |
2627 | Lisp_Object child; | |
177c0ea7 | 2628 | |
233a4a2c GM |
2629 | for (child = w->prev; !NILP (child); child = XWINDOW (child)->prev) |
2630 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2631 | break; | |
2632 | ||
2633 | if (NILP (child)) | |
2634 | for (child = w->next; !NILP (child); child = XWINDOW (child)->next) | |
2635 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) | |
2636 | break; | |
2637 | ||
2638 | if (NILP (child)) | |
2639 | fixed_p = 1; | |
2640 | } | |
2641 | } | |
2642 | else | |
2643 | fixed_p = 1; | |
2644 | ||
2645 | return fixed_p; | |
2646 | } | |
177c0ea7 | 2647 | |
233a4a2c GM |
2648 | |
2649 | /* Return the minimum size of window W, not taking fixed-width windows | |
2650 | into account. WIDTH_P non-zero means return the minimum width, | |
2651 | otherwise return the minimum height. If W is a combination window, | |
2652 | compute the minimum size from the minimum sizes of W's children. */ | |
2653 | ||
2654 | static int | |
2655 | window_min_size_1 (w, width_p) | |
c1636aa6 GM |
2656 | struct window *w; |
2657 | int width_p; | |
2658 | { | |
233a4a2c | 2659 | struct window *c; |
c1636aa6 | 2660 | int size; |
177c0ea7 | 2661 | |
233a4a2c GM |
2662 | if (!NILP (w->hchild)) |
2663 | { | |
2664 | c = XWINDOW (w->hchild); | |
2665 | size = 0; | |
177c0ea7 | 2666 | |
233a4a2c GM |
2667 | if (width_p) |
2668 | { | |
2669 | /* The min width of a horizontal combination is | |
2670 | the sum of the min widths of its children. */ | |
2671 | while (c) | |
2672 | { | |
2673 | size += window_min_size_1 (c, width_p); | |
2674 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2675 | } | |
2676 | } | |
2677 | else | |
2678 | { | |
2679 | /* The min height a horizontal combination equals | |
2680 | the maximum of all min height of its children. */ | |
2681 | while (c) | |
2682 | { | |
2683 | int min_size = window_min_size_1 (c, width_p); | |
2684 | size = max (min_size, size); | |
2685 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2686 | } | |
2687 | } | |
2688 | } | |
2689 | else if (!NILP (w->vchild)) | |
2690 | { | |
2691 | c = XWINDOW (w->vchild); | |
2692 | size = 0; | |
177c0ea7 | 2693 | |
233a4a2c GM |
2694 | if (width_p) |
2695 | { | |
2696 | /* The min width of a vertical combination is | |
2697 | the maximum of the min widths of its children. */ | |
2698 | while (c) | |
2699 | { | |
2700 | int min_size = window_min_size_1 (c, width_p); | |
2701 | size = max (min_size, size); | |
2702 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2703 | } | |
2704 | } | |
2705 | else | |
2706 | { | |
2707 | /* The min height of a vertical combination equals | |
2708 | the sum of the min height of its children. */ | |
2709 | while (c) | |
2710 | { | |
2711 | size += window_min_size_1 (c, width_p); | |
2712 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2713 | } | |
2714 | } | |
2715 | } | |
c1636aa6 GM |
2716 | else |
2717 | { | |
233a4a2c | 2718 | if (width_p) |
da7520de CY |
2719 | size = max (window_min_width, |
2720 | (MIN_SAFE_WINDOW_WIDTH | |
2721 | + WINDOW_FRINGE_COLS (w) | |
2722 | + WINDOW_SCROLL_BAR_COLS (w))); | |
c1636aa6 | 2723 | else |
233a4a2c GM |
2724 | { |
2725 | if (MINI_WINDOW_P (w) | |
2726 | || (!WINDOW_WANTS_MODELINE_P (w) | |
045dee35 | 2727 | && !WINDOW_WANTS_HEADER_LINE_P (w))) |
233a4a2c GM |
2728 | size = 1; |
2729 | else | |
2730 | size = window_min_height; | |
2731 | } | |
c1636aa6 GM |
2732 | } |
2733 | ||
2734 | return size; | |
2735 | } | |
2736 | ||
2737 | ||
233a4a2c GM |
2738 | /* Return the minimum size of window W, taking fixed-size windows into |
2739 | account. WIDTH_P non-zero means return the minimum width, | |
f984d4fc GM |
2740 | otherwise return the minimum height. IGNORE_FIXED_P non-zero means |
2741 | ignore if W is fixed-size. Set *FIXED to 1 if W is fixed-size | |
2742 | unless FIXED is null. */ | |
7ab12479 | 2743 | |
233a4a2c | 2744 | static int |
f984d4fc | 2745 | window_min_size (w, width_p, ignore_fixed_p, fixed) |
233a4a2c | 2746 | struct window *w; |
f984d4fc | 2747 | int width_p, ignore_fixed_p, *fixed; |
233a4a2c GM |
2748 | { |
2749 | int size, fixed_p; | |
2750 | ||
f984d4fc GM |
2751 | if (ignore_fixed_p) |
2752 | fixed_p = 0; | |
2753 | else | |
2754 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
177c0ea7 | 2755 | |
233a4a2c GM |
2756 | if (fixed) |
2757 | *fixed = fixed_p; | |
177c0ea7 | 2758 | |
233a4a2c | 2759 | if (fixed_p) |
949cf20f | 2760 | size = width_p ? XFASTINT (w->total_cols) : XFASTINT (w->total_lines); |
233a4a2c GM |
2761 | else |
2762 | size = window_min_size_1 (w, width_p); | |
177c0ea7 | 2763 | |
233a4a2c GM |
2764 | return size; |
2765 | } | |
2766 | ||
2767 | ||
79fd290e | 2768 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
2769 | Return 1 if window width is ok after adjustment; 0 if window |
2770 | is still too narrow. */ | |
2771 | ||
2772 | static int | |
2773 | adjust_window_margins (w) | |
2774 | struct window *w; | |
2775 | { | |
2776 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
2777 | - WINDOW_FRINGE_COLS (w) | |
2778 | - WINDOW_SCROLL_BAR_COLS (w)); | |
2779 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
2780 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
2781 | ||
2782 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
2783 | return 1; | |
2784 | ||
2785 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
2786 | return 0; | |
2787 | ||
2788 | /* Window's text area is too narrow, but reducing the window | |
2789 | margins will fix that. */ | |
2790 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
2791 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
2792 | { | |
2793 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
2794 | w->left_margin_cols = w->right_margin_cols | |
2795 | = make_number (margin_cols/2); | |
2796 | else | |
2797 | w->right_margin_cols = make_number (margin_cols); | |
2798 | } | |
2799 | else | |
2800 | w->left_margin_cols = make_number (margin_cols); | |
2801 | return 1; | |
2802 | } | |
2803 | ||
0aa513ed JD |
2804 | /* Calculate new sizes for windows in the list FORWARD when the window size |
2805 | goes from TOTAL to SIZE. TOTAL must be greater than SIZE. | |
2806 | The number of windows in FORWARD is NCHILDREN, and the number that | |
2807 | can shrink is SHRINKABLE. | |
2808 | The minimum size a window can have is MIN_SIZE. | |
2809 | If we are shrinking fixed windows, RESIZE_FIXED_P is non-zero. | |
2810 | If we are shrinking columns, WIDTH_P is non-zero, otherwise we are | |
2811 | shrinking rows. | |
2812 | ||
2813 | This function returns an allocated array of new sizes that the caller | |
2814 | must free. The size -1 means the window is fixed and RESIZE_FIXED_P | |
2815 | is zero. Array index 0 refers to the first window in FORWARD, 1 to | |
2816 | the second, and so on. | |
2817 | ||
2818 | This function tries to keep windows at least at the minimum size | |
2819 | and resize other windows before it resizes any window to zero (i.e. | |
2820 | delete that window). | |
2821 | ||
2822 | Windows are resized proportional to their size, so bigger windows | |
2823 | shrink more than smaller windows. */ | |
2824 | static int * | |
2825 | shrink_windows (total, size, nchildren, shrinkable, | |
2826 | min_size, resize_fixed_p, forward, width_p) | |
2827 | int total, size, nchildren, shrinkable, min_size; | |
2828 | int resize_fixed_p, width_p; | |
2829 | Lisp_Object forward; | |
2830 | { | |
2831 | int available_resize = 0; | |
2832 | int *new_sizes; | |
2833 | struct window *c; | |
2834 | Lisp_Object child; | |
2835 | int smallest = total; | |
2836 | int total_removed = 0; | |
2837 | int total_shrink = total - size; | |
2838 | int i; | |
2839 | ||
2840 | new_sizes = xmalloc (sizeof (*new_sizes) * nchildren); | |
2841 | ||
2842 | for (i = 0, child = forward; !NILP (child); child = c->next, ++i) | |
2843 | { | |
2844 | int child_size; | |
2845 | ||
2846 | c = XWINDOW (child); | |
2847 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); | |
2848 | ||
2849 | if (! resize_fixed_p && window_fixed_size_p (c, width_p, 0)) | |
2850 | new_sizes[i] = -1; | |
2851 | else | |
2852 | { | |
2853 | new_sizes[i] = child_size; | |
2854 | if (child_size > min_size) | |
2855 | available_resize += child_size - min_size; | |
2856 | } | |
2857 | } | |
2858 | /* We might need to shrink some windows to zero. Find the smallest | |
2859 | windows and set them to 0 until we can fulfil the new size. */ | |
2860 | ||
2861 | while (shrinkable > 1 && size + available_resize < total) | |
2862 | { | |
2863 | for (i = 0; i < nchildren; ++i) | |
2864 | if (new_sizes[i] > 0 && smallest > new_sizes[i]) | |
2865 | smallest = new_sizes[i]; | |
2866 | ||
2867 | for (i = 0; i < nchildren; ++i) | |
2868 | if (new_sizes[i] == smallest) | |
2869 | { | |
2870 | /* Resize this window down to zero. */ | |
2871 | new_sizes[i] = 0; | |
2872 | if (smallest > min_size) | |
2873 | available_resize -= smallest - min_size; | |
2874 | available_resize += smallest; | |
2875 | --shrinkable; | |
2876 | total_removed += smallest; | |
2877 | ||
ef614e04 JD |
2878 | /* We don't know what the smallest is now. */ |
2879 | smallest = total; | |
2880 | ||
0aa513ed JD |
2881 | /* Out of for, just remove one window at the time and |
2882 | check again if we have enough space. */ | |
2883 | break; | |
2884 | } | |
2885 | } | |
2886 | ||
2887 | /* Now, calculate the new sizes. Try to shrink each window | |
2888 | proportional to its size. */ | |
2889 | for (i = 0; i < nchildren; ++i) | |
2890 | { | |
2891 | if (new_sizes[i] > min_size) | |
2892 | { | |
2893 | int to_shrink = total_shrink*new_sizes[i]/total; | |
2894 | if (new_sizes[i] - to_shrink < min_size) | |
2895 | to_shrink = new_sizes[i] - min_size; | |
2896 | new_sizes[i] -= to_shrink; | |
2897 | total_removed += to_shrink; | |
2898 | } | |
2899 | } | |
2900 | ||
2901 | /* Any reminder due to rounding, we just subtract from windows | |
2902 | that are left and still can be shrunk. */ | |
2903 | while (total_shrink > total_removed) | |
2904 | { | |
ef614e04 JD |
2905 | int nonzero_sizes = 0; |
2906 | int nonzero_idx = -1; | |
2907 | ||
2908 | for (i = 0; i < nchildren; ++i) | |
2909 | if (new_sizes[i] > 0) | |
2910 | { | |
2911 | ++nonzero_sizes; | |
2912 | nonzero_idx = i; | |
2913 | } | |
c49a0495 | 2914 | |
0aa513ed JD |
2915 | for (i = 0; i < nchildren; ++i) |
2916 | if (new_sizes[i] > min_size) | |
2917 | { | |
2918 | --new_sizes[i]; | |
2919 | ++total_removed; | |
2920 | ||
2921 | /* Out of for, just shrink one window at the time and | |
2922 | check again if we have enough space. */ | |
2923 | break; | |
2924 | } | |
ef614e04 JD |
2925 | |
2926 | ||
2927 | /* Special case, only one window left. */ | |
2928 | if (nonzero_sizes == 1) | |
2929 | break; | |
2930 | } | |
2931 | ||
2932 | /* Any surplus due to rounding, we add to windows that are left. */ | |
2933 | while (total_shrink < total_removed) | |
2934 | { | |
2935 | for (i = 0; i < nchildren; ++i) | |
2936 | { | |
2937 | if (new_sizes[i] != 0 && total_shrink < total_removed) | |
2938 | { | |
2939 | ++new_sizes[i]; | |
2940 | --total_removed; | |
2941 | break; | |
2942 | } | |
2943 | } | |
0aa513ed JD |
2944 | } |
2945 | ||
2946 | return new_sizes; | |
2947 | } | |
949cf20f | 2948 | |
233a4a2c GM |
2949 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set |
2950 | WINDOW's width. Resize WINDOW's children, if any, so that they | |
5fe0b054 RS |
2951 | keep their proportionate size relative to WINDOW. |
2952 | ||
2953 | If FIRST_ONLY is 1, change only the first of WINDOW's children when | |
2954 | they are in series. If LAST_ONLY is 1, change only the last of | |
2955 | WINDOW's children when they are in series. | |
2956 | ||
2957 | Propagate WINDOW's top or left edge position to children. Delete | |
2958 | windows that become too small unless NODELETE_P is non-zero. | |
192c3131 RS |
2959 | |
2960 | If NODELETE_P is 2, that means we do delete windows that are | |
2961 | too small, even if they were too small before! */ | |
233a4a2c GM |
2962 | |
2963 | static void | |
5fe0b054 | 2964 | size_window (window, size, width_p, nodelete_p, first_only, last_only) |
7ab12479 | 2965 | Lisp_Object window; |
233a4a2c | 2966 | int size, width_p, nodelete_p; |
5fe0b054 | 2967 | int first_only, last_only; |
7ab12479 | 2968 | { |
233a4a2c GM |
2969 | struct window *w = XWINDOW (window); |
2970 | struct window *c; | |
2971 | Lisp_Object child, *forward, *sideward; | |
949cf20f | 2972 | int old_size, min_size, safe_min_size; |
7ab12479 | 2973 | |
949cf20f KS |
2974 | /* We test nodelete_p != 2 and nodelete_p != 1 below, so it |
2975 | seems like it's too soon to do this here. ++KFS. */ | |
192c3131 RS |
2976 | if (nodelete_p == 2) |
2977 | nodelete_p = 0; | |
2978 | ||
a481b3ea | 2979 | check_min_window_sizes (); |
7ae2f10f | 2980 | size = max (0, size); |
177c0ea7 | 2981 | |
b5f05b50 GM |
2982 | /* If the window has been "too small" at one point, |
2983 | don't delete it for being "too small" in the future. | |
2984 | Preserve it as long as that is at all possible. */ | |
233a4a2c GM |
2985 | if (width_p) |
2986 | { | |
949cf20f | 2987 | old_size = WINDOW_TOTAL_COLS (w); |
233a4a2c | 2988 | min_size = window_min_width; |
949cf20f KS |
2989 | /* Ensure that there is room for the scroll bar and fringes! |
2990 | We may reduce display margins though. */ | |
2991 | safe_min_size = (MIN_SAFE_WINDOW_WIDTH | |
2992 | + WINDOW_FRINGE_COLS (w) | |
2993 | + WINDOW_SCROLL_BAR_COLS (w)); | |
233a4a2c GM |
2994 | } |
2995 | else | |
2996 | { | |
949cf20f | 2997 | old_size = XINT (w->total_lines); |
233a4a2c | 2998 | min_size = window_min_height; |
949cf20f | 2999 | safe_min_size = MIN_SAFE_WINDOW_HEIGHT; |
233a4a2c | 3000 | } |
192c3131 RS |
3001 | |
3002 | if (old_size < min_size && nodelete_p != 2) | |
b5f05b50 GM |
3003 | w->too_small_ok = Qt; |
3004 | ||
233a4a2c | 3005 | /* Maybe delete WINDOW if it's too small. */ |
192c3131 | 3006 | if (nodelete_p != 1 && !NILP (w->parent)) |
7ab12479 | 3007 | { |
b5f05b50 | 3008 | if (!MINI_WINDOW_P (w) && !NILP (w->too_small_ok)) |
233a4a2c | 3009 | min_size = width_p ? MIN_SAFE_WINDOW_WIDTH : MIN_SAFE_WINDOW_HEIGHT; |
949cf20f KS |
3010 | if (min_size < safe_min_size) |
3011 | min_size = safe_min_size; | |
233a4a2c | 3012 | if (size < min_size) |
c1636aa6 GM |
3013 | { |
3014 | delete_window (window); | |
3015 | return; | |
3016 | } | |
7ab12479 JB |
3017 | } |
3018 | ||
233a4a2c | 3019 | /* Set redisplay hints. */ |
7ae2f10f GM |
3020 | w->last_modified = make_number (0); |
3021 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 3022 | windows_or_buffers_changed++; |
7ae2f10f | 3023 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 3024 | |
233a4a2c GM |
3025 | if (width_p) |
3026 | { | |
3027 | sideward = &w->vchild; | |
3028 | forward = &w->hchild; | |
949cf20f KS |
3029 | w->total_cols = make_number (size); |
3030 | adjust_window_margins (w); | |
233a4a2c GM |
3031 | } |
3032 | else | |
3033 | { | |
3034 | sideward = &w->hchild; | |
3035 | forward = &w->vchild; | |
949cf20f KS |
3036 | w->total_lines = make_number (size); |
3037 | w->orig_total_lines = Qnil; | |
233a4a2c GM |
3038 | } |
3039 | ||
3040 | if (!NILP (*sideward)) | |
7ab12479 | 3041 | { |
5fe0b054 | 3042 | /* We have a chain of parallel siblings whose size should all change. */ |
233a4a2c | 3043 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 3044 | { |
233a4a2c GM |
3045 | c = XWINDOW (child); |
3046 | if (width_p) | |
949cf20f | 3047 | c->left_col = w->left_col; |
233a4a2c | 3048 | else |
949cf20f | 3049 | c->top_line = w->top_line; |
5fe0b054 RS |
3050 | size_window (child, size, width_p, nodelete_p, |
3051 | first_only, last_only); | |
7ab12479 JB |
3052 | } |
3053 | } | |
5fe0b054 RS |
3054 | else if (!NILP (*forward) && last_only) |
3055 | { | |
3056 | /* Change the last in a series of siblings. */ | |
3057 | Lisp_Object last_child; | |
3058 | int child_size; | |
3059 | ||
3060 | for (child = *forward; !NILP (child); child = c->next) | |
3061 | { | |
3062 | c = XWINDOW (child); | |
3063 | last_child = child; | |
3064 | } | |
3065 | ||
3066 | child_size = XINT (width_p ? c->total_cols : c->total_lines); | |
3067 | size_window (last_child, | |
3068 | size - old_size + child_size, | |
3069 | width_p, nodelete_p, first_only, last_only); | |
3070 | } | |
3071 | else if (!NILP (*forward) && first_only) | |
3072 | { | |
3073 | /* Change the first in a series of siblings. */ | |
3074 | int child_size; | |
3075 | ||
3076 | child = *forward; | |
3077 | c = XWINDOW (child); | |
3078 | ||
3079 | if (width_p) | |
3080 | c->left_col = w->left_col; | |
3081 | else | |
3082 | c->top_line = w->top_line; | |
3083 | ||
3084 | child_size = XINT (width_p ? c->total_cols : c->total_lines); | |
3085 | size_window (child, | |
3086 | size - old_size + child_size, | |
3087 | width_p, nodelete_p, first_only, last_only); | |
3088 | } | |
233a4a2c | 3089 | else if (!NILP (*forward)) |
7ab12479 | 3090 | { |
233a4a2c GM |
3091 | int fixed_size, each, extra, n; |
3092 | int resize_fixed_p, nfixed; | |
8b6d9dc9 | 3093 | int last_pos, first_pos, nchildren, total; |
0aa513ed | 3094 | int *new_sizes = NULL; |
233a4a2c | 3095 | |
5fe0b054 | 3096 | /* Determine the fixed-size portion of this window, and the |
233a4a2c | 3097 | number of child windows. */ |
8b6d9dc9 | 3098 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 3099 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 3100 | { |
8b6d9dc9 | 3101 | int child_size; |
177c0ea7 | 3102 | |
7ab12479 | 3103 | c = XWINDOW (child); |
949cf20f | 3104 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); |
8b6d9dc9 | 3105 | total += child_size; |
177c0ea7 | 3106 | |
233a4a2c GM |
3107 | if (window_fixed_size_p (c, width_p, 0)) |
3108 | { | |
8b6d9dc9 | 3109 | fixed_size += child_size; |
233a4a2c GM |
3110 | ++nfixed; |
3111 | } | |
3112 | } | |
7ab12479 | 3113 | |
233a4a2c GM |
3114 | /* If the new size is smaller than fixed_size, or if there |
3115 | aren't any resizable windows, allow resizing fixed-size | |
3116 | windows. */ | |
3117 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
3118 | ||
0aa513ed | 3119 | /* Compute how many lines/columns to add/remove to each child. The |
233a4a2c GM |
3120 | value of extra takes care of rounding errors. */ |
3121 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
0aa513ed JD |
3122 | if (size < total && n > 1) |
3123 | new_sizes = shrink_windows (total, size, nchildren, n, min_size, | |
3124 | resize_fixed_p, *forward, width_p); | |
3125 | else | |
3126 | { | |
3127 | each = (size - total) / n; | |
3128 | extra = (size - total) - n * each; | |
3129 | } | |
233a4a2c GM |
3130 | |
3131 | /* Compute new children heights and edge positions. */ | |
949cf20f | 3132 | first_pos = width_p ? XINT (w->left_col) : XINT (w->top_line); |
233a4a2c | 3133 | last_pos = first_pos; |
0aa513ed | 3134 | for (n = 0, child = *forward; !NILP (child); child = c->next, ++n) |
233a4a2c GM |
3135 | { |
3136 | int new_size, old_size; | |
177c0ea7 | 3137 | |
233a4a2c | 3138 | c = XWINDOW (child); |
949cf20f | 3139 | old_size = width_p ? XFASTINT (c->total_cols) : XFASTINT (c->total_lines); |
233a4a2c | 3140 | new_size = old_size; |
7ab12479 | 3141 | |
233a4a2c GM |
3142 | /* The top or left edge position of this child equals the |
3143 | bottom or right edge of its predecessor. */ | |
3144 | if (width_p) | |
949cf20f | 3145 | c->left_col = make_number (last_pos); |
233a4a2c | 3146 | else |
949cf20f | 3147 | c->top_line = make_number (last_pos); |
7ab12479 | 3148 | |
233a4a2c GM |
3149 | /* If this child can be resized, do it. */ |
3150 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
3151 | { | |
0aa513ed | 3152 | new_size = new_sizes ? new_sizes[n] : old_size + each + extra; |
233a4a2c GM |
3153 | extra = 0; |
3154 | } | |
177c0ea7 | 3155 | |
233a4a2c GM |
3156 | /* Set new height. Note that size_window also propagates |
3157 | edge positions to children, so it's not a no-op if we | |
3158 | didn't change the child's size. */ | |
5fe0b054 | 3159 | size_window (child, new_size, width_p, 1, first_only, last_only); |
233a4a2c GM |
3160 | |
3161 | /* Remember the bottom/right edge position of this child; it | |
3162 | will be used to set the top/left edge of the next child. */ | |
0aa513ed | 3163 | last_pos += new_size; |
7ab12479 | 3164 | } |
233a4a2c | 3165 | |
0aa513ed JD |
3166 | if (new_sizes) xfree (new_sizes); |
3167 | ||
233a4a2c GM |
3168 | /* We should have covered the parent exactly with child windows. */ |
3169 | xassert (size == last_pos - first_pos); | |
177c0ea7 | 3170 | |
7ab12479 | 3171 | /* Now delete any children that became too small. */ |
233a4a2c GM |
3172 | if (!nodelete_p) |
3173 | for (child = *forward; !NILP (child); child = c->next) | |
7ab12479 | 3174 | { |
233a4a2c GM |
3175 | int child_size; |
3176 | c = XWINDOW (child); | |
949cf20f | 3177 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); |
5fe0b054 | 3178 | size_window (child, child_size, width_p, 2, first_only, last_only); |
7ab12479 JB |
3179 | } |
3180 | } | |
3181 | } | |
3182 | ||
233a4a2c GM |
3183 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
3184 | WINDOW's children. NODELETE non-zero means don't delete windows | |
3185 | that become too small in the process. (The caller should check | |
3186 | later and do so if appropriate.) */ | |
7ab12479 | 3187 | |
5e14b1fc | 3188 | void |
233a4a2c | 3189 | set_window_height (window, height, nodelete) |
7ab12479 | 3190 | Lisp_Object window; |
233a4a2c | 3191 | int height; |
7ab12479 JB |
3192 | int nodelete; |
3193 | { | |
5fe0b054 | 3194 | size_window (window, height, 0, nodelete, 0, 0); |
233a4a2c | 3195 | } |
7ab12479 | 3196 | |
7ab12479 | 3197 | |
233a4a2c GM |
3198 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
3199 | WINDOW's children. NODELETE non-zero means don't delete windows | |
3200 | that become too small in the process. (The caller should check | |
3201 | later and do so if appropriate.) */ | |
7ab12479 | 3202 | |
233a4a2c GM |
3203 | void |
3204 | set_window_width (window, width, nodelete) | |
3205 | Lisp_Object window; | |
3206 | int width; | |
3207 | int nodelete; | |
3208 | { | |
5fe0b054 | 3209 | size_window (window, width, 1, nodelete, 0, 0); |
7ab12479 | 3210 | } |
233a4a2c | 3211 | |
cdbc7fec KS |
3212 | /* Change window heights in windows rooted in WINDOW by N lines. */ |
3213 | ||
3214 | void | |
3215 | change_window_heights (window, n) | |
3216 | Lisp_Object window; | |
3217 | int n; | |
3218 | { | |
3219 | struct window *w = XWINDOW (window); | |
3220 | ||
949cf20f KS |
3221 | XSETFASTINT (w->top_line, XFASTINT (w->top_line) + n); |
3222 | XSETFASTINT (w->total_lines, XFASTINT (w->total_lines) - n); | |
cdbc7fec | 3223 | |
949cf20f KS |
3224 | if (INTEGERP (w->orig_top_line)) |
3225 | XSETFASTINT (w->orig_top_line, XFASTINT (w->orig_top_line) + n); | |
3226 | if (INTEGERP (w->orig_total_lines)) | |
3227 | XSETFASTINT (w->orig_total_lines, XFASTINT (w->orig_total_lines) - n); | |
cdbc7fec KS |
3228 | |
3229 | /* Handle just the top child in a vertical split. */ | |
3230 | if (!NILP (w->vchild)) | |
3231 | change_window_heights (w->vchild, n); | |
3232 | ||
3233 | /* Adjust all children in a horizontal split. */ | |
3234 | for (window = w->hchild; !NILP (window); window = w->next) | |
3235 | { | |
3236 | w = XWINDOW (window); | |
3237 | change_window_heights (window, n); | |
3238 | } | |
3239 | } | |
3240 | ||
7ab12479 | 3241 | \f |
1d8d96fa | 3242 | int window_select_count; |
7ab12479 | 3243 | |
5b03d3c0 RS |
3244 | Lisp_Object |
3245 | Fset_window_buffer_unwind (obuf) | |
3246 | Lisp_Object obuf; | |
3247 | { | |
3248 | Fset_buffer (obuf); | |
3249 | return Qnil; | |
3250 | } | |
3251 | ||
56613f06 SM |
3252 | EXFUN (Fset_window_fringes, 4); |
3253 | EXFUN (Fset_window_scroll_bars, 4); | |
7ab12479 | 3254 | |
5500c422 GM |
3255 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3256 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3257 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3258 | margins, fringes, and scroll-bar settings of the window are not | |
3259 | reset from the buffer's local settings. */ | |
7ab12479 | 3260 | |
5500c422 | 3261 | void |
949cf20f | 3262 | set_window_buffer (window, buffer, run_hooks_p, keep_margins_p) |
5500c422 | 3263 | Lisp_Object window, buffer; |
949cf20f | 3264 | int run_hooks_p, keep_margins_p; |
5500c422 GM |
3265 | { |
3266 | struct window *w = XWINDOW (window); | |
3267 | struct buffer *b = XBUFFER (buffer); | |
aed13378 | 3268 | int count = SPECPDL_INDEX (); |
7ab12479 JB |
3269 | |
3270 | w->buffer = buffer; | |
86e48436 RS |
3271 | |
3272 | if (EQ (window, selected_window)) | |
5500c422 | 3273 | b->last_selected_window = window; |
beb4e312 | 3274 | |
c49a0495 KS |
3275 | /* Let redisplay errors through. */ |
3276 | b->display_error_modiff = 0; | |
3277 | ||
beb4e312 | 3278 | /* Update time stamps of buffer display. */ |
5500c422 GM |
3279 | if (INTEGERP (b->display_count)) |
3280 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
3281 | b->display_time = Fcurrent_time (); | |
86e48436 | 3282 | |
d834a2e9 | 3283 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 GM |
3284 | XSETFASTINT (w->window_end_vpos, 0); |
3285 | bzero (&w->last_cursor, sizeof w->last_cursor); | |
5a41ab94 | 3286 | w->window_end_valid = Qnil; |
1c686c99 | 3287 | w->hscroll = w->min_hscroll = make_number (0); |
224227d1 | 3288 | w->vscroll = 0; |
5500c422 | 3289 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
7ab12479 | 3290 | set_marker_restricted (w->start, |
5500c422 | 3291 | make_number (b->last_window_start), |
7ab12479 JB |
3292 | buffer); |
3293 | w->start_at_line_beg = Qnil; | |
e36ab06b | 3294 | w->force_start = Qnil; |
d834a2e9 | 3295 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 3296 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 3297 | windows_or_buffers_changed++; |
5b03d3c0 RS |
3298 | |
3299 | /* We must select BUFFER for running the window-scroll-functions. | |
3300 | If WINDOW is selected, switch permanently. | |
3301 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
3302 | if (EQ (window, selected_window)) |
3303 | Fset_buffer (buffer); | |
5b03d3c0 RS |
3304 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3305 | because that might itself be a local variable. */ | |
3306 | else if (window_initialized) | |
3307 | { | |
3308 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
3309 | Fset_buffer (buffer); | |
3310 | } | |
3311 | ||
949cf20f KS |
3312 | if (!keep_margins_p) |
3313 | { | |
3314 | /* Set left and right marginal area width etc. from buffer. */ | |
3315 | ||
79fd290e | 3316 | /* This may call adjust_window_margins three times, so |
949cf20f | 3317 | temporarily disable window margins. */ |
3834380d KS |
3318 | Lisp_Object save_left = w->left_margin_cols; |
3319 | Lisp_Object save_right = w->right_margin_cols; | |
3320 | ||
949cf20f KS |
3321 | w->left_margin_cols = w->right_margin_cols = Qnil; |
3322 | ||
3323 | Fset_window_fringes (window, | |
3324 | b->left_fringe_width, b->right_fringe_width, | |
3325 | b->fringes_outside_margins); | |
3326 | ||
3327 | Fset_window_scroll_bars (window, | |
3328 | b->scroll_bar_width, | |
3329 | b->vertical_scroll_bar_type, Qnil); | |
3330 | ||
3834380d KS |
3331 | w->left_margin_cols = save_left; |
3332 | w->right_margin_cols = save_right; | |
3333 | ||
949cf20f KS |
3334 | Fset_window_margins (window, |
3335 | b->left_margin_cols, b->right_margin_cols); | |
3336 | } | |
7ab12479 | 3337 | |
5500c422 GM |
3338 | if (run_hooks_p) |
3339 | { | |
3340 | if (! NILP (Vwindow_scroll_functions)) | |
3341 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
3342 | Fmarker_position (w->start)); | |
3343 | ||
3344 | if (! NILP (Vwindow_configuration_change_hook) | |
3345 | && ! NILP (Vrun_hooks)) | |
3346 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3347 | } | |
543f5fb1 | 3348 | |
5b03d3c0 | 3349 | unbind_to (count, Qnil); |
5500c422 | 3350 | } |
5b03d3c0 | 3351 | |
5500c422 | 3352 | |
949cf20f | 3353 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
fdb82f93 | 3354 | doc: /* Make WINDOW display BUFFER as its contents. |
c2755926 | 3355 | BUFFER can be a buffer or the name of an existing buffer. |
ab80314b | 3356 | Optional third arg KEEP-MARGINS non-nil means that WINDOW's current |
949cf20f KS |
3357 | display margins, fringe widths, and scroll bar settings are maintained; |
3358 | the default is to reset these from BUFFER's local settings or the frame | |
6cb4a892 RS |
3359 | defaults. |
3360 | ||
3361 | This function runs the hook `window-scroll-functions'. */) | |
949cf20f | 3362 | (window, buffer, keep_margins) |
56613f06 | 3363 | register Lisp_Object window, buffer, keep_margins; |
5500c422 GM |
3364 | { |
3365 | register Lisp_Object tem; | |
3366 | register struct window *w = decode_window (window); | |
5500c422 | 3367 | |
bed0c171 | 3368 | XSETWINDOW (window, w); |
5500c422 | 3369 | buffer = Fget_buffer (buffer); |
b7826503 | 3370 | CHECK_BUFFER (buffer); |
5500c422 GM |
3371 | |
3372 | if (NILP (XBUFFER (buffer)->name)) | |
3373 | error ("Attempt to display deleted buffer"); | |
3374 | ||
3375 | tem = w->buffer; | |
3376 | if (NILP (tem)) | |
3377 | error ("Window is deleted"); | |
3378 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
3379 | is first being set up. */ | |
3380 | { | |
3381 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) | |
3382 | error ("Window is dedicated to `%s'", | |
d5db4077 | 3383 | SDATA (XBUFFER (tem)->name)); |
5500c422 GM |
3384 | |
3385 | unshow_buffer (w); | |
3386 | } | |
3387 | ||
949cf20f | 3388 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 JB |
3389 | return Qnil; |
3390 | } | |
3391 | ||
2d0834cc SM |
3392 | /* Note that selected_window can be nil |
3393 | when this is called from Fset_window_configuration. */ | |
3394 | ||
14d87dc9 | 3395 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, |
fdb82f93 | 3396 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. |
e963215c | 3397 | If WINDOW is not already selected, make WINDOW's buffer current |
c2755926 | 3398 | and make WINDOW the frame's selected window. Return WINDOW. |
14d87dc9 SM |
3399 | Optional second arg NORECORD non-nil means |
3400 | do not put this buffer at the front of the list of recently selected ones. | |
282f7831 | 3401 | |
fdb82f93 PJ |
3402 | Note that the main editor command loop |
3403 | selects the buffer of the selected window before each command. */) | |
14d87dc9 SM |
3404 | (window, norecord) |
3405 | register Lisp_Object window, norecord; | |
7ab12479 JB |
3406 | { |
3407 | register struct window *w; | |
719eaeb1 | 3408 | register struct window *ow; |
1ae1a37d | 3409 | struct frame *sf; |
7ab12479 | 3410 | |
b7826503 | 3411 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3412 | |
3413 | w = XWINDOW (window); | |
50e88778 | 3414 | w->frozen_window_start_p = 0; |
7ab12479 | 3415 | |
2a1893f4 SM |
3416 | ++window_select_count; |
3417 | XSETFASTINT (w->use_time, window_select_count); | |
7ab12479 JB |
3418 | if (EQ (window, selected_window)) |
3419 | return window; | |
3420 | ||
a46c0153 RS |
3421 | /* Store the current buffer's actual point into the |
3422 | old selected window. It belongs to that window, | |
3423 | and when the window is not selected, must be in the window. */ | |
719eaeb1 GM |
3424 | if (!NILP (selected_window)) |
3425 | { | |
3426 | ow = XWINDOW (selected_window); | |
3427 | if (! NILP (ow->buffer)) | |
3428 | set_marker_both (ow->pointm, ow->buffer, | |
3429 | BUF_PT (XBUFFER (ow->buffer)), | |
3430 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
3431 | } | |
7ab12479 JB |
3432 | |
3433 | selected_window = window; | |
1ae1a37d | 3434 | sf = SELECTED_FRAME (); |
d1755117 RS |
3435 | if (XFRAME (WINDOW_FRAME (w)) != sf) |
3436 | { | |
3437 | XFRAME (WINDOW_FRAME (w))->selected_window = window; | |
3438 | /* Use this rather than Fhandle_switch_frame | |
3439 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
3440 | move around in the state where a minibuffer in a separate | |
3441 | frame is active. */ | |
c869384d | 3442 | Fselect_frame (WINDOW_FRAME (w)); |
d1755117 RS |
3443 | } |
3444 | else | |
1ae1a37d | 3445 | sf->selected_window = window; |
7ab12479 | 3446 | |
14d87dc9 | 3447 | if (NILP (norecord)) |
b7354ddf | 3448 | record_buffer (w->buffer); |
7ab12479 JB |
3449 | Fset_buffer (w->buffer); |
3450 | ||
86e48436 RS |
3451 | XBUFFER (w->buffer)->last_selected_window = window; |
3452 | ||
7ab12479 JB |
3453 | /* Go to the point recorded in the window. |
3454 | This is important when the buffer is in more | |
3455 | than one window. It also matters when | |
3456 | redisplay_window has altered point after scrolling, | |
3457 | because it makes the change only in the window. */ | |
3458 | { | |
3459 | register int new_point = marker_position (w->pointm); | |
3460 | if (new_point < BEGV) | |
3461 | SET_PT (BEGV); | |
a9c95e08 | 3462 | else if (new_point > ZV) |
7ab12479 JB |
3463 | SET_PT (ZV); |
3464 | else | |
3465 | SET_PT (new_point); | |
3466 | } | |
3467 | ||
3468 | windows_or_buffers_changed++; | |
3469 | return window; | |
3470 | } | |
14d87dc9 SM |
3471 | |
3472 | static Lisp_Object | |
3473 | select_window_norecord (window) | |
3474 | Lisp_Object window; | |
3475 | { | |
3476 | return Fselect_window (window, Qt); | |
3477 | } | |
b7354ddf | 3478 | \f |
441a127e RS |
3479 | /* Deiconify the frame containing the window WINDOW, |
3480 | unless it is the selected frame; | |
3481 | then return WINDOW. | |
3482 | ||
3483 | The reason for the exception for the selected frame | |
3484 | is that it seems better not to change the selected frames visibility | |
3485 | merely because of displaying a different buffer in it. | |
3486 | The deiconification is useful when a buffer gets shown in | |
3487 | another frame that you were not using lately. */ | |
d07f802a RS |
3488 | |
3489 | static Lisp_Object | |
3490 | display_buffer_1 (window) | |
3491 | Lisp_Object window; | |
3492 | { | |
1ae1a37d GM |
3493 | Lisp_Object frame = XWINDOW (window)->frame; |
3494 | FRAME_PTR f = XFRAME (frame); | |
177c0ea7 | 3495 | |
d07f802a | 3496 | FRAME_SAMPLE_VISIBILITY (f); |
177c0ea7 | 3497 | |
2d0834cc SM |
3498 | if (EQ (frame, selected_frame)) |
3499 | ; /* Assume the selected frame is already visible enough. */ | |
3500 | else if (minibuf_level > 0 | |
3501 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
3502 | && WINDOW_LIVE_P (minibuf_selected_window) | |
3503 | && EQ (frame, WINDOW_FRAME (XWINDOW (minibuf_selected_window)))) | |
3504 | ; /* Assume the frame from which we invoked the minibuffer is visible. */ | |
3505 | else | |
60117126 RS |
3506 | { |
3507 | if (FRAME_ICONIFIED_P (f)) | |
1ae1a37d | 3508 | Fmake_frame_visible (frame); |
37962e60 | 3509 | else if (FRAME_VISIBLE_P (f)) |
1ae1a37d | 3510 | Fraise_frame (frame); |
60117126 | 3511 | } |
177c0ea7 | 3512 | |
d07f802a RS |
3513 | return window; |
3514 | } | |
3515 | ||
4628f7a4 | 3516 | DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, |
d99b4859 | 3517 | doc: /* Returns non-nil if a buffer named BUFFER-NAME gets a special frame. |
c019856e RS |
3518 | If the value is t, `display-buffer' or `pop-to-buffer' would create a |
3519 | special frame for that buffer using the default frame parameters. | |
3520 | ||
3521 | If the value is a list, it is a list of frame parameters that would be used | |
d99b4859 RS |
3522 | to make a frame for that buffer. |
3523 | The variables `special-display-buffer-names' | |
3524 | and `special-display-regexps' control this. */) | |
fdb82f93 | 3525 | (buffer_name) |
4628f7a4 EN |
3526 | Lisp_Object buffer_name; |
3527 | { | |
3528 | Lisp_Object tem; | |
3529 | ||
b7826503 | 3530 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
3531 | |
3532 | tem = Fmember (buffer_name, Vspecial_display_buffer_names); | |
3533 | if (!NILP (tem)) | |
3534 | return Qt; | |
3535 | ||
3536 | tem = Fassoc (buffer_name, Vspecial_display_buffer_names); | |
3537 | if (!NILP (tem)) | |
3538 | return XCDR (tem); | |
3539 | ||
3540 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) | |
3541 | { | |
3542 | Lisp_Object car = XCAR (tem); | |
3543 | if (STRINGP (car) | |
3544 | && fast_string_match (car, buffer_name) >= 0) | |
3545 | return Qt; | |
3546 | else if (CONSP (car) | |
3547 | && STRINGP (XCAR (car)) | |
3548 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
0057b00a | 3549 | return XCDR (car); |
4628f7a4 EN |
3550 | } |
3551 | return Qnil; | |
177c0ea7 | 3552 | } |
4628f7a4 EN |
3553 | |
3554 | DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, | |
c019856e RS |
3555 | doc: /* Returns non-nil if a buffer named BUFFER-NAME would use the same window. |
3556 | More precisely, if `display-buffer' or `pop-to-buffer' would display | |
3557 | that buffer in the selected window rather than (as usual) in some other window. | |
fdb82f93 PJ |
3558 | See `same-window-buffer-names' and `same-window-regexps'. */) |
3559 | (buffer_name) | |
4628f7a4 EN |
3560 | Lisp_Object buffer_name; |
3561 | { | |
3562 | Lisp_Object tem; | |
3563 | ||
b7826503 | 3564 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
3565 | |
3566 | tem = Fmember (buffer_name, Vsame_window_buffer_names); | |
3567 | if (!NILP (tem)) | |
3568 | return Qt; | |
3569 | ||
3570 | tem = Fassoc (buffer_name, Vsame_window_buffer_names); | |
3571 | if (!NILP (tem)) | |
3572 | return Qt; | |
3573 | ||
3574 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) | |
3575 | { | |
3576 | Lisp_Object car = XCAR (tem); | |
3577 | if (STRINGP (car) | |
3578 | && fast_string_match (car, buffer_name) >= 0) | |
3579 | return Qt; | |
3580 | else if (CONSP (car) | |
3581 | && STRINGP (XCAR (car)) | |
3582 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
3583 | return Qt; | |
3584 | } | |
3585 | return Qnil; | |
3586 | } | |
3587 | ||
fdb82f93 | 3588 | /* Use B so the default is (other-buffer). */ |
53f76081 | 3589 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 3, |
fdb82f93 PJ |
3590 | "BDisplay buffer: \nP", |
3591 | doc: /* Make BUFFER appear in some window but don't select it. | |
473d3c06 | 3592 | BUFFER must be the name of an existing buffer, or, when called from Lisp, |
c2755926 | 3593 | a buffer. |
fdb82f93 PJ |
3594 | If BUFFER is shown already in some window, just use that one, |
3595 | unless the window is the selected window and the optional second | |
3596 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg). | |
3597 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER. | |
3598 | Returns the window displaying BUFFER. | |
079d288f | 3599 | If `display-buffer-reuse-frames' is non-nil, and another frame is currently |
fdb82f93 PJ |
3600 | displaying BUFFER, then simply raise that frame. |
3601 | ||
9a7e95f3 RS |
3602 | The variables `special-display-buffer-names', |
3603 | `special-display-regexps', `same-window-buffer-names', and | |
3604 | `same-window-regexps' customize how certain buffer names are handled. | |
9297079e | 3605 | The latter two take effect only if NOT-THIS-WINDOW is nil. |
fdb82f93 PJ |
3606 | |
3607 | If optional argument FRAME is `visible', search all visible frames. | |
3608 | If FRAME is 0, search all visible and iconified frames. | |
3609 | If FRAME is t, search all frames. | |
3610 | If FRAME is a frame, search only that frame. | |
3611 | If FRAME is nil, search only the selected frame | |
3612 | (actually the last nonminibuffer frame), | |
3613 | unless `pop-up-frames' or `display-buffer-reuse-frames' is non-nil, | |
3614 | which means search visible and iconified frames. | |
3615 | ||
876e2665 GM |
3616 | If a full-width window on a splittable frame is available to display |
3617 | the buffer, it may be split, subject to the value of the variable | |
3618 | `split-height-threshold'. | |
3619 | ||
fdb82f93 PJ |
3620 | If `even-window-heights' is non-nil, window heights will be evened out |
3621 | if displaying the buffer causes two vertically adjacent windows to be | |
3622 | displayed. */) | |
3623 | (buffer, not_this_window, frame) | |
53f76081 | 3624 | register Lisp_Object buffer, not_this_window, frame; |
7ab12479 | 3625 | { |
aee631c2 | 3626 | register Lisp_Object window, tem, swp; |
1ae1a37d | 3627 | struct frame *f; |
7ab12479 | 3628 | |
aee631c2 | 3629 | swp = Qnil; |
7ab12479 | 3630 | buffer = Fget_buffer (buffer); |
b7826503 | 3631 | CHECK_BUFFER (buffer); |
7ab12479 | 3632 | |
265a9e55 | 3633 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
3634 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
3635 | ||
265a9e55 | 3636 | if (NILP (not_this_window) |
7ab12479 | 3637 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 3638 | return display_buffer_1 (selected_window); |
7ab12479 | 3639 | |
855d8627 RS |
3640 | /* See if the user has specified this buffer should appear |
3641 | in the selected window. */ | |
3642 | if (NILP (not_this_window)) | |
3643 | { | |
aee631c2 RS |
3644 | swp = Fsame_window_p (XBUFFER (buffer)->name); |
3645 | if (!NILP (swp) && !no_switch_window (selected_window)) | |
c63dc4a2 RS |
3646 | { |
3647 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 3648 | return display_buffer_1 (selected_window); |
c63dc4a2 | 3649 | } |
855d8627 RS |
3650 | } |
3651 | ||
079d288f | 3652 | /* If the user wants pop-up-frames or display-buffer-reuse-frames, |
73dc5198 KH |
3653 | look for a window showing BUFFER on any visible or iconified frame. |
3654 | Otherwise search only the current frame. */ | |
53f76081 RS |
3655 | if (! NILP (frame)) |
3656 | tem = frame; | |
9c3da604 GM |
3657 | else if (pop_up_frames |
3658 | || display_buffer_reuse_frames | |
3659 | || last_nonminibuf_frame == 0) | |
73dc5198 KH |
3660 | XSETFASTINT (tem, 0); |
3661 | else | |
73dc5198 | 3662 | XSETFRAME (tem, last_nonminibuf_frame); |
177c0ea7 | 3663 | |
73dc5198 | 3664 | window = Fget_buffer_window (buffer, tem); |
265a9e55 JB |
3665 | if (!NILP (window) |
3666 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
9c3da604 | 3667 | return display_buffer_1 (window); |
7ab12479 | 3668 | |
a90712c2 | 3669 | /* Certain buffer names get special handling. */ |
aee631c2 | 3670 | if (!NILP (Vspecial_display_function) && NILP (swp)) |
a90712c2 | 3671 | { |
4628f7a4 EN |
3672 | tem = Fspecial_display_p (XBUFFER (buffer)->name); |
3673 | if (EQ (tem, Qt)) | |
a90712c2 | 3674 | return call1 (Vspecial_display_function, buffer); |
4628f7a4 EN |
3675 | if (CONSP (tem)) |
3676 | return call2 (Vspecial_display_function, buffer, tem); | |
a90712c2 RS |
3677 | } |
3678 | ||
44fa5b1e JB |
3679 | /* If there are no frames open that have more than a minibuffer, |
3680 | we need to create a new frame. */ | |
3681 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 3682 | { |
a90712c2 | 3683 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
949cf20f | 3684 | Fset_window_buffer (window, buffer, Qnil); |
d07f802a | 3685 | return display_buffer_1 (window); |
7ab12479 | 3686 | } |
7ab12479 | 3687 | |
1ae1a37d | 3688 | f = SELECTED_FRAME (); |
43bad991 | 3689 | if (pop_up_windows |
1ae1a37d | 3690 | || FRAME_MINIBUF_ONLY_P (f) |
cee67da9 RS |
3691 | /* If the current frame is a special display frame, |
3692 | don't try to reuse its windows. */ | |
1ae1a37d | 3693 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f))->dedicated)) |
7ab12479 | 3694 | { |
12cae7c0 KH |
3695 | Lisp_Object frames; |
3696 | ||
37962e60 | 3697 | frames = Qnil; |
1ae1a37d | 3698 | if (FRAME_MINIBUF_ONLY_P (f)) |
74112613 | 3699 | XSETFRAME (frames, last_nonminibuf_frame); |
a5731348 | 3700 | /* Don't try to create a window if we would get an error. */ |
7ab12479 JB |
3701 | if (split_height_threshold < window_min_height << 1) |
3702 | split_height_threshold = window_min_height << 1; | |
3703 | ||
cee67da9 RS |
3704 | /* Note that both Fget_largest_window and Fget_lru_window |
3705 | ignore minibuffers and dedicated windows. | |
3706 | This means they can return nil. */ | |
7ab12479 | 3707 | |
cee67da9 RS |
3708 | /* If the frame we would try to split cannot be split, |
3709 | try other frames. */ | |
1ae1a37d | 3710 | if (FRAME_NO_SPLIT_P (NILP (frames) ? f : last_nonminibuf_frame)) |
cee67da9 RS |
3711 | { |
3712 | /* Try visible frames first. */ | |
3cbb13c8 | 3713 | window = Fget_largest_window (Qvisible, Qt); |
cee67da9 RS |
3714 | /* If that didn't work, try iconified frames. */ |
3715 | if (NILP (window)) | |
3cbb13c8 SM |
3716 | window = Fget_largest_window (make_number (0), Qt); |
3717 | #if 0 /* Don't try windows on other displays. */ | |
cee67da9 | 3718 | if (NILP (window)) |
3cbb13c8 SM |
3719 | window = Fget_largest_window (Qt, Qt); |
3720 | #endif | |
cee67da9 RS |
3721 | } |
3722 | else | |
3cbb13c8 | 3723 | window = Fget_largest_window (frames, Qt); |
cee67da9 | 3724 | |
92cca945 RS |
3725 | /* If we got a tall enough full-width window that can be split, |
3726 | split it. */ | |
265a9e55 | 3727 | if (!NILP (window) |
92cca945 | 3728 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ab12479 | 3729 | && window_height (window) >= split_height_threshold |
111e5992 | 3730 | && WINDOW_FULL_WIDTH_P (XWINDOW (window))) |
7ab12479 JB |
3731 | window = Fsplit_window (window, Qnil, Qnil); |
3732 | else | |
3733 | { | |
1942f68f RS |
3734 | Lisp_Object upper, lower, other; |
3735 | ||
3cbb13c8 | 3736 | window = Fget_lru_window (frames, Qt); |
92cca945 RS |
3737 | /* If the LRU window is selected, and big enough, |
3738 | and can be split, split it. */ | |
cee67da9 | 3739 | if (!NILP (window) |
92cca945 | 3740 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
cee67da9 RS |
3741 | && (EQ (window, selected_window) |
3742 | || EQ (XWINDOW (window)->parent, Qnil)) | |
7ab12479 JB |
3743 | && window_height (window) >= window_min_height << 1) |
3744 | window = Fsplit_window (window, Qnil, Qnil); | |
49e99345 SM |
3745 | else |
3746 | window = Fget_lru_window (frames, Qnil); | |
cee67da9 | 3747 | /* If Fget_lru_window returned nil, try other approaches. */ |
48d9379d | 3748 | |
cee67da9 | 3749 | /* Try visible frames first. */ |
48d9379d RS |
3750 | if (NILP (window)) |
3751 | window = Fget_buffer_window (buffer, Qvisible); | |
cee67da9 | 3752 | if (NILP (window)) |
3cbb13c8 | 3753 | window = Fget_largest_window (Qvisible, Qnil); |
cee67da9 | 3754 | /* If that didn't work, try iconified frames. */ |
48d9379d RS |
3755 | if (NILP (window)) |
3756 | window = Fget_buffer_window (buffer, make_number (0)); | |
cee67da9 | 3757 | if (NILP (window)) |
3cbb13c8 SM |
3758 | window = Fget_largest_window (make_number (0), Qnil); |
3759 | ||
3760 | #if 0 /* Don't try frames on other displays. */ | |
48d9379d RS |
3761 | if (NILP (window)) |
3762 | window = Fget_buffer_window (buffer, Qt); | |
cee67da9 | 3763 | if (NILP (window)) |
3cbb13c8 SM |
3764 | window = Fget_largest_window (Qt, Qnil); |
3765 | #endif | |
cee67da9 RS |
3766 | /* As a last resort, make a new frame. */ |
3767 | if (NILP (window)) | |
3768 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
3769 | /* If window appears above or below another, |
3770 | even out their heights. */ | |
cac66e4f | 3771 | other = upper = lower = Qnil; |
1942f68f RS |
3772 | if (!NILP (XWINDOW (window)->prev)) |
3773 | other = upper = XWINDOW (window)->prev, lower = window; | |
3774 | if (!NILP (XWINDOW (window)->next)) | |
3775 | other = lower = XWINDOW (window)->next, upper = window; | |
3776 | if (!NILP (other) | |
6529ed87 | 3777 | && !NILP (Veven_window_heights) |
1942f68f | 3778 | /* Check that OTHER and WINDOW are vertically arrayed. */ |
949cf20f KS |
3779 | && !EQ (XWINDOW (other)->top_line, XWINDOW (window)->top_line) |
3780 | && (XFASTINT (XWINDOW (other)->total_lines) | |
3781 | > XFASTINT (XWINDOW (window)->total_lines))) | |
1942f68f | 3782 | { |
949cf20f KS |
3783 | int total = (XFASTINT (XWINDOW (other)->total_lines) |
3784 | + XFASTINT (XWINDOW (window)->total_lines)); | |
86c8e823 | 3785 | enlarge_window (upper, |
949cf20f | 3786 | total / 2 - XFASTINT (XWINDOW (upper)->total_lines), |
56ebfae2 | 3787 | 0); |
1942f68f | 3788 | } |
7ab12479 JB |
3789 | } |
3790 | } | |
3791 | else | |
3cbb13c8 | 3792 | window = Fget_lru_window (Qnil, Qnil); |
7ab12479 | 3793 | |
949cf20f | 3794 | Fset_window_buffer (window, buffer, Qnil); |
d07f802a | 3795 | return display_buffer_1 (window); |
7ab12479 JB |
3796 | } |
3797 | ||
e661376d KS |
3798 | |
3799 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, | |
3800 | 0, 1, 0, | |
5a1048a5 | 3801 | doc: /* Force all windows to be updated on next redisplay. |
e661376d | 3802 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3803 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
e661376d KS |
3804 | displaying that buffer. */) |
3805 | (object) | |
3806 | Lisp_Object object; | |
3807 | { | |
3808 | if (NILP (object)) | |
3809 | { | |
3810 | windows_or_buffers_changed++; | |
40c6ee74 | 3811 | update_mode_lines++; |
e661376d KS |
3812 | return Qt; |
3813 | } | |
3814 | ||
3815 | if (WINDOWP (object)) | |
3816 | { | |
40c6ee74 | 3817 | struct window *w = XWINDOW (object); |
e661376d | 3818 | mark_window_display_accurate (object, 0); |
40c6ee74 KS |
3819 | w->update_mode_line = Qt; |
3820 | if (BUFFERP (w->buffer)) | |
3821 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
3822 | ++update_mode_lines; | |
e661376d KS |
3823 | return Qt; |
3824 | } | |
0cc1039f | 3825 | |
e661376d KS |
3826 | if (STRINGP (object)) |
3827 | object = Fget_buffer (object); | |
3828 | if (BUFFERP (object) && !NILP (XBUFFER (object)->name)) | |
3829 | { | |
3830 | /* Walk all windows looking for buffer, and force update | |
3831 | of each of those windows. */ | |
3832 | ||
3833 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); | |
3834 | return NILP (object) ? Qnil : Qt; | |
3835 | } | |
3836 | ||
3837 | /* If nothing suitable was found, just return. | |
3838 | We could signal an error, but this feature will typically be used | |
3839 | asynchronously in timers or process sentinels, so we don't. */ | |
3840 | return Qnil; | |
3841 | } | |
3842 | ||
3843 | ||
7ab12479 JB |
3844 | void |
3845 | temp_output_buffer_show (buf) | |
3846 | register Lisp_Object buf; | |
3847 | { | |
3848 | register struct buffer *old = current_buffer; | |
3849 | register Lisp_Object window; | |
3850 | register struct window *w; | |
3851 | ||
bccd3dd1 RS |
3852 | XBUFFER (buf)->directory = current_buffer->directory; |
3853 | ||
7ab12479 | 3854 | Fset_buffer (buf); |
c6367666 | 3855 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3856 | BEGV = BEG; |
3857 | ZV = Z; | |
3858 | SET_PT (BEG); | |
06be4f85 | 3859 | #if 0 /* rms: there should be no reason for this. */ |
b1599b4c | 3860 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
06be4f85 | 3861 | #endif |
7ab12479 JB |
3862 | set_buffer_internal (old); |
3863 | ||
e67a1dea | 3864 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3865 | call1 (Vtemp_buffer_show_function, buf); |
3866 | else | |
3867 | { | |
53f76081 | 3868 | window = Fdisplay_buffer (buf, Qnil, Qnil); |
7ab12479 | 3869 | |
1ae1a37d | 3870 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3871 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3872 | Vminibuf_scroll_window = window; |
3873 | w = XWINDOW (window); | |
d834a2e9 | 3874 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3875 | XSETFASTINT (w->min_hscroll, 0); |
2d0834cc SM |
3876 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3877 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3878 | |
beb4e312 | 3879 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3880 | and its buffer current. */ |
2d0834cc SM |
3881 | |
3882 | if (!NILP (Vrun_hooks) | |
3883 | && !NILP (Fboundp (Qtemp_buffer_show_hook)) | |
3884 | && !NILP (Fsymbol_value (Qtemp_buffer_show_hook))) | |
2cccc823 | 3885 | { |
2d0834cc SM |
3886 | int count = SPECPDL_INDEX (); |
3887 | Lisp_Object prev_window, prev_buffer; | |
3888 | prev_window = selected_window; | |
3889 | XSETBUFFER (prev_buffer, old); | |
0cc1039f | 3890 | |
2d0834cc SM |
3891 | /* Select the window that was chosen, for running the hook. |
3892 | Note: Both Fselect_window and select_window_norecord may | |
3893 | set-buffer to the buffer displayed in the window, | |
3894 | so we need to save the current buffer. --stef */ | |
3895 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3896 | record_unwind_protect (select_window_norecord, prev_window); | |
3897 | Fselect_window (window, Qt); | |
3898 | Fset_buffer (w->buffer); | |
3899 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); | |
3900 | unbind_to (count, Qnil); | |
2cccc823 RS |
3901 | } |
3902 | } | |
7ab12479 JB |
3903 | } |
3904 | \f | |
dfcf069d | 3905 | static void |
7ab12479 JB |
3906 | make_dummy_parent (window) |
3907 | Lisp_Object window; | |
3908 | { | |
cffec418 | 3909 | Lisp_Object new; |
7ab12479 | 3910 | register struct window *o, *p; |
cffec418 | 3911 | int i; |
7ab12479 | 3912 | |
cffec418 | 3913 | o = XWINDOW (window); |
26605be9 | 3914 | p = allocate_window (); |
cffec418 | 3915 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
3916 | ((struct Lisp_Vector *) p)->contents[i] |
3917 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 3918 | XSETWINDOW (new, p); |
7ab12479 | 3919 | |
2a1893f4 SM |
3920 | ++sequence_number; |
3921 | XSETFASTINT (p->sequence_number, sequence_number); | |
7ab12479 JB |
3922 | |
3923 | /* Put new into window structure in place of window */ | |
3924 | replace_window (window, new); | |
3925 | ||
3926 | o->next = Qnil; | |
3927 | o->prev = Qnil; | |
3928 | o->vchild = Qnil; | |
3929 | o->hchild = Qnil; | |
3930 | o->parent = new; | |
3931 | ||
3932 | p->start = Qnil; | |
3933 | p->pointm = Qnil; | |
3934 | p->buffer = Qnil; | |
3935 | } | |
3936 | ||
3937 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
fdb82f93 PJ |
3938 | doc: /* Split WINDOW, putting SIZE lines in the first of the pair. |
3939 | WINDOW defaults to selected one and SIZE to half its size. | |
3940 | If optional third arg HORFLAG is non-nil, split side by side | |
3941 | and put SIZE columns in the first of the pair. In that case, | |
876e2665 | 3942 | SIZE includes that window's scroll bar, or the divider column to its right. |
c2755926 LT |
3943 | Interactively, all arguments are nil. |
3944 | ||
3945 | Returns the newly created window (which is the lower or rightmost one). | |
19ca94ce RS |
3946 | The upper or leftmost window is the original one, and remains selected |
3947 | if it was selected before. | |
3948 | ||
c2755926 | 3949 | See Info node `(elisp)Splitting Windows' for more details and examples.*/) |
fdb82f93 | 3950 | (window, size, horflag) |
77ae0fe3 | 3951 | Lisp_Object window, size, horflag; |
7ab12479 JB |
3952 | { |
3953 | register Lisp_Object new; | |
3954 | register struct window *o, *p; | |
c0807608 | 3955 | FRAME_PTR fo; |
77ae0fe3 | 3956 | register int size_int; |
7ab12479 | 3957 | |
265a9e55 | 3958 | if (NILP (window)) |
7ab12479 JB |
3959 | window = selected_window; |
3960 | else | |
b7826503 | 3961 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3962 | |
3963 | o = XWINDOW (window); | |
c0807608 | 3964 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 3965 | |
77ae0fe3 | 3966 | if (NILP (size)) |
7ab12479 | 3967 | { |
265a9e55 | 3968 | if (!NILP (horflag)) |
c0807608 | 3969 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
3970 | the usable space in columns by two. |
3971 | We round up, since the left-hand window may include | |
3972 | a dividing line, while the right-hand may not. */ | |
949cf20f | 3973 | size_int = (XFASTINT (o->total_cols) + 1) >> 1; |
7ab12479 | 3974 | else |
949cf20f | 3975 | size_int = XFASTINT (o->total_lines) >> 1; |
7ab12479 JB |
3976 | } |
3977 | else | |
3978 | { | |
b7826503 | 3979 | CHECK_NUMBER (size); |
77ae0fe3 | 3980 | size_int = XINT (size); |
7ab12479 JB |
3981 | } |
3982 | ||
3983 | if (MINI_WINDOW_P (o)) | |
3984 | error ("Attempt to split minibuffer window"); | |
233a4a2c GM |
3985 | else if (window_fixed_size_p (o, !NILP (horflag), 0)) |
3986 | error ("Attempt to split fixed-size window"); | |
7ab12479 | 3987 | |
a481b3ea | 3988 | check_min_window_sizes (); |
7ab12479 | 3989 | |
265a9e55 | 3990 | if (NILP (horflag)) |
7ab12479 | 3991 | { |
77ae0fe3 KH |
3992 | if (size_int < window_min_height) |
3993 | error ("Window height %d too small (after splitting)", size_int); | |
949cf20f | 3994 | if (size_int + window_min_height > XFASTINT (o->total_lines)) |
37962e60 | 3995 | error ("Window height %d too small (after splitting)", |
949cf20f | 3996 | XFASTINT (o->total_lines) - size_int); |
265a9e55 JB |
3997 | if (NILP (o->parent) |
3998 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
3999 | { |
4000 | make_dummy_parent (window); | |
4001 | new = o->parent; | |
4002 | XWINDOW (new)->vchild = window; | |
4003 | } | |
4004 | } | |
4005 | else | |
4006 | { | |
77ae0fe3 KH |
4007 | if (size_int < window_min_width) |
4008 | error ("Window width %d too small (after splitting)", size_int); | |
a59fed7e | 4009 | |
949cf20f | 4010 | if (size_int + window_min_width > XFASTINT (o->total_cols)) |
37962e60 | 4011 | error ("Window width %d too small (after splitting)", |
949cf20f | 4012 | XFASTINT (o->total_cols) - size_int); |
265a9e55 JB |
4013 | if (NILP (o->parent) |
4014 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
4015 | { |
4016 | make_dummy_parent (window); | |
4017 | new = o->parent; | |
4018 | XWINDOW (new)->hchild = window; | |
4019 | } | |
4020 | } | |
4021 | ||
4022 | /* Now we know that window's parent is a vertical combination | |
4023 | if we are dividing vertically, or a horizontal combination | |
4024 | if we are making side-by-side windows */ | |
4025 | ||
4026 | windows_or_buffers_changed++; | |
c0807608 | 4027 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
4028 | new = make_window (); |
4029 | p = XWINDOW (new); | |
4030 | ||
44fa5b1e | 4031 | p->frame = o->frame; |
7ab12479 | 4032 | p->next = o->next; |
265a9e55 | 4033 | if (!NILP (p->next)) |
7ab12479 JB |
4034 | XWINDOW (p->next)->prev = new; |
4035 | p->prev = window; | |
4036 | o->next = new; | |
4037 | p->parent = o->parent; | |
4038 | p->buffer = Qt; | |
5500c422 GM |
4039 | p->window_end_valid = Qnil; |
4040 | bzero (&p->last_cursor, sizeof p->last_cursor); | |
7ab12479 | 4041 | |
949cf20f KS |
4042 | /* Duplicate special geometry settings. */ |
4043 | ||
4044 | p->left_margin_cols = o->left_margin_cols; | |
4045 | p->right_margin_cols = o->right_margin_cols; | |
4046 | p->left_fringe_width = o->left_fringe_width; | |
4047 | p->right_fringe_width = o->right_fringe_width; | |
4048 | p->fringes_outside_margins = o->fringes_outside_margins; | |
4049 | p->scroll_bar_width = o->scroll_bar_width; | |
4050 | p->vertical_scroll_bar_type = o->vertical_scroll_bar_type; | |
4051 | ||
44fa5b1e | 4052 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 4053 | |
265a9e55 | 4054 | if (!NILP (horflag)) |
7ab12479 | 4055 | { |
949cf20f KS |
4056 | p->total_lines = o->total_lines; |
4057 | p->top_line = o->top_line; | |
4058 | XSETFASTINT (p->total_cols, XFASTINT (o->total_cols) - size_int); | |
4059 | XSETFASTINT (o->total_cols, size_int); | |
4060 | XSETFASTINT (p->left_col, XFASTINT (o->left_col) + size_int); | |
4061 | adjust_window_margins (p); | |
4062 | adjust_window_margins (o); | |
7ab12479 JB |
4063 | } |
4064 | else | |
4065 | { | |
949cf20f KS |
4066 | p->left_col = o->left_col; |
4067 | p->total_cols = o->total_cols; | |
4068 | XSETFASTINT (p->total_lines, XFASTINT (o->total_lines) - size_int); | |
4069 | XSETFASTINT (o->total_lines, size_int); | |
4070 | XSETFASTINT (p->top_line, XFASTINT (o->top_line) + size_int); | |
7ab12479 JB |
4071 | } |
4072 | ||
5500c422 GM |
4073 | /* Adjust glyph matrices. */ |
4074 | adjust_glyphs (fo); | |
949cf20f KS |
4075 | |
4076 | Fset_window_buffer (new, o->buffer, Qt); | |
7ab12479 JB |
4077 | return new; |
4078 | } | |
4079 | \f | |
56ebfae2 | 4080 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", |
fdb82f93 PJ |
4081 | doc: /* Make current window ARG lines bigger. |
4082 | From program, optional second arg non-nil means grow sideways ARG columns. | |
f95284d2 | 4083 | Interactively, if an argument is not given, make the window one line bigger. |
5afc696a | 4084 | If HORIZONTAL is non-nil, enlarge horizontally instead of vertically. |
56ebfae2 RS |
4085 | This function can delete windows, even the second window, if they get |
4086 | too small. */) | |
4087 | (arg, horizontal) | |
4088 | Lisp_Object arg, horizontal; | |
7ab12479 | 4089 | { |
b7826503 | 4090 | CHECK_NUMBER (arg); |
56ebfae2 | 4091 | enlarge_window (selected_window, XINT (arg), !NILP (horizontal)); |
543f5fb1 RS |
4092 | |
4093 | if (! NILP (Vwindow_configuration_change_hook)) | |
4094 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
4095 | ||
7ab12479 JB |
4096 | return Qnil; |
4097 | } | |
4098 | ||
56ebfae2 | 4099 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", |
fdb82f93 PJ |
4100 | doc: /* Make current window ARG lines smaller. |
4101 | From program, optional second arg non-nil means shrink sideways arg columns. | |
56ebfae2 | 4102 | Interactively, if an argument is not given, make the window one line smaller. Only |
a5731348 | 4103 | siblings to the right or below are changed. */) |
56ebfae2 RS |
4104 | (arg, side) |
4105 | Lisp_Object arg, side; | |
7ab12479 | 4106 | { |
b7826503 | 4107 | CHECK_NUMBER (arg); |
56ebfae2 | 4108 | enlarge_window (selected_window, -XINT (arg), !NILP (side)); |
543f5fb1 RS |
4109 | |
4110 | if (! NILP (Vwindow_configuration_change_hook)) | |
4111 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
4112 | ||
7ab12479 JB |
4113 | return Qnil; |
4114 | } | |
4115 | ||
4116 | int | |
4117 | window_height (window) | |
4118 | Lisp_Object window; | |
4119 | { | |
4120 | register struct window *p = XWINDOW (window); | |
949cf20f | 4121 | return WINDOW_TOTAL_LINES (p); |
7ab12479 JB |
4122 | } |
4123 | ||
4124 | int | |
4125 | window_width (window) | |
4126 | Lisp_Object window; | |
4127 | { | |
4128 | register struct window *p = XWINDOW (window); | |
949cf20f | 4129 | return WINDOW_TOTAL_COLS (p); |
7ab12479 JB |
4130 | } |
4131 | ||
177c0ea7 | 4132 | |
7ab12479 | 4133 | #define CURBEG(w) \ |
5afc696a | 4134 | *(horiz_flag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line)) |
7ab12479 JB |
4135 | |
4136 | #define CURSIZE(w) \ | |
5afc696a RS |
4137 | *(horiz_flag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines)) |
4138 | ||
7ab12479 | 4139 | |
5afc696a RS |
4140 | /* Enlarge WINDOW by DELTA. |
4141 | HORIZ_FLAG nonzero means enlarge it horizontally; | |
4142 | zero means do it vertically. | |
233a4a2c | 4143 | |
5afc696a RS |
4144 | Siblings of the selected window are resized to fulfill the size |
4145 | request. If they become too small in the process, they will be | |
56ebfae2 | 4146 | deleted. */ |
7ab12479 | 4147 | |
f984d4fc | 4148 | static void |
56ebfae2 | 4149 | enlarge_window (window, delta, horiz_flag) |
86c8e823 | 4150 | Lisp_Object window; |
56ebfae2 | 4151 | int delta, horiz_flag; |
7ab12479 | 4152 | { |
86c8e823 | 4153 | Lisp_Object parent, next, prev; |
233a4a2c | 4154 | struct window *p; |
3578db3c KR |
4155 | Lisp_Object *sizep; |
4156 | int maximum; | |
5e14b1fc | 4157 | int (*sizefun) P_ ((Lisp_Object)) |
5afc696a | 4158 | = horiz_flag ? window_width : window_height; |
233a4a2c | 4159 | void (*setsizefun) P_ ((Lisp_Object, int, int)) |
5afc696a | 4160 | = (horiz_flag ? set_window_width : set_window_height); |
7ab12479 | 4161 | |
233a4a2c GM |
4162 | /* Check values of window_min_width and window_min_height for |
4163 | validity. */ | |
a481b3ea | 4164 | check_min_window_sizes (); |
7ab12479 | 4165 | |
233a4a2c | 4166 | /* Give up if this window cannot be resized. */ |
5afc696a | 4167 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) |
233a4a2c GM |
4168 | error ("Window is not resizable"); |
4169 | ||
4170 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
4171 | while (1) |
4172 | { | |
4173 | p = XWINDOW (window); | |
4174 | parent = p->parent; | |
177c0ea7 | 4175 | |
265a9e55 | 4176 | if (NILP (parent)) |
7ab12479 | 4177 | { |
5afc696a | 4178 | if (horiz_flag) |
7ab12479 JB |
4179 | error ("No other window to side of this one"); |
4180 | break; | |
4181 | } | |
177c0ea7 | 4182 | |
5afc696a | 4183 | if (horiz_flag |
233a4a2c | 4184 | ? !NILP (XWINDOW (parent)->hchild) |
265a9e55 | 4185 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 4186 | break; |
177c0ea7 | 4187 | |
7ab12479 JB |
4188 | window = parent; |
4189 | } | |
4190 | ||
05c2896a | 4191 | sizep = &CURSIZE (window); |
7ab12479 | 4192 | |
7ab12479 JB |
4193 | { |
4194 | register int maxdelta; | |
7ab12479 | 4195 | |
f95284d2 RS |
4196 | /* Compute the maximum size increment this window can have. */ |
4197 | ||
56ebfae2 RS |
4198 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) |
4199 | /* This is a main window followed by a minibuffer. */ | |
4200 | : !NILP (p->next) ? ((*sizefun) (p->next) | |
4201 | - window_min_size (XWINDOW (p->next), | |
4202 | horiz_flag, 0, 0)) | |
4203 | /* This is a minibuffer following a main window. */ | |
4204 | : !NILP (p->prev) ? ((*sizefun) (p->prev) | |
4205 | - window_min_size (XWINDOW (p->prev), | |
4206 | horiz_flag, 0, 0)) | |
4207 | /* This is a frame with only one window, a minibuffer-only | |
4208 | or a minibufferless frame. */ | |
4209 | : (delta = 0)); | |
7ab12479 JB |
4210 | |
4211 | if (delta > maxdelta) | |
4212 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
4213 | the full frame, or make the only window aside from the |
4214 | minibuffer the full frame. */ | |
7ab12479 | 4215 | delta = maxdelta; |
6b54027b | 4216 | } |
d5783c40 | 4217 | |
5afc696a | 4218 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), horiz_flag, 0, 0)) |
6b54027b | 4219 | { |
543f5fb1 | 4220 | delete_window (window); |
d5783c40 | 4221 | return; |
6b54027b RS |
4222 | } |
4223 | ||
4224 | if (delta == 0) | |
4225 | return; | |
7ab12479 | 4226 | |
f95284d2 | 4227 | /* Find the total we can get from other siblings without deleting them. */ |
db98a733 RS |
4228 | maximum = 0; |
4229 | for (next = p->next; ! NILP (next); next = XWINDOW (next)->next) | |
c1636aa6 | 4230 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
5afc696a | 4231 | horiz_flag, 0, 0); |
56ebfae2 RS |
4232 | for (prev = p->prev; ! NILP (prev); prev = XWINDOW (prev)->prev) |
4233 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), | |
4234 | horiz_flag, 0, 0); | |
db98a733 | 4235 | |
f95284d2 | 4236 | /* If we can get it all from them without deleting them, do so. */ |
c6b530ed | 4237 | if (delta <= maximum) |
7ab12479 | 4238 | { |
db98a733 RS |
4239 | Lisp_Object first_unaffected; |
4240 | Lisp_Object first_affected; | |
233a4a2c | 4241 | int fixed_p; |
db98a733 RS |
4242 | |
4243 | next = p->next; | |
4244 | prev = p->prev; | |
4245 | first_affected = window; | |
4246 | /* Look at one sibling at a time, | |
4247 | moving away from this window in both directions alternately, | |
4248 | and take as much as we can get without deleting that sibling. */ | |
f95284d2 | 4249 | while (delta != 0 |
56ebfae2 | 4250 | && (!NILP (next) || !NILP (prev))) |
db98a733 | 4251 | { |
db98a733 RS |
4252 | if (! NILP (next)) |
4253 | { | |
c1636aa6 | 4254 | int this_one = ((*sizefun) (next) |
233a4a2c | 4255 | - window_min_size (XWINDOW (next), |
5afc696a | 4256 | horiz_flag, 0, &fixed_p)); |
233a4a2c GM |
4257 | if (!fixed_p) |
4258 | { | |
4259 | if (this_one > delta) | |
4260 | this_one = delta; | |
177c0ea7 | 4261 | |
233a4a2c | 4262 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); |
3578db3c | 4263 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 4264 | |
233a4a2c GM |
4265 | delta -= this_one; |
4266 | } | |
177c0ea7 | 4267 | |
db98a733 RS |
4268 | next = XWINDOW (next)->next; |
4269 | } | |
177c0ea7 | 4270 | |
db98a733 RS |
4271 | if (delta == 0) |
4272 | break; | |
177c0ea7 | 4273 | |
56ebfae2 | 4274 | if (! NILP (prev)) |
db98a733 | 4275 | { |
c1636aa6 | 4276 | int this_one = ((*sizefun) (prev) |
233a4a2c | 4277 | - window_min_size (XWINDOW (prev), |
5afc696a | 4278 | horiz_flag, 0, &fixed_p)); |
233a4a2c GM |
4279 | if (!fixed_p) |
4280 | { | |
4281 | if (this_one > delta) | |
4282 | this_one = delta; | |
177c0ea7 | 4283 | |
233a4a2c | 4284 | first_affected = prev; |
177c0ea7 | 4285 | |
233a4a2c | 4286 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); |
3578db3c | 4287 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
4288 | |
4289 | delta -= this_one; | |
4290 | } | |
177c0ea7 | 4291 | |
db98a733 RS |
4292 | prev = XWINDOW (prev)->prev; |
4293 | } | |
4294 | } | |
4295 | ||
233a4a2c GM |
4296 | xassert (delta == 0); |
4297 | ||
db98a733 RS |
4298 | /* Now recalculate the edge positions of all the windows affected, |
4299 | based on the new sizes. */ | |
4300 | first_unaffected = next; | |
4301 | prev = first_affected; | |
4302 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
4303 | prev = next, next = XWINDOW (next)->next) | |
4304 | { | |
3578db3c | 4305 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
4306 | /* This does not change size of NEXT, |
4307 | but it propagates the new top edge to its children */ | |
4308 | (*setsizefun) (next, (*sizefun) (next), 0); | |
4309 | } | |
7ab12479 JB |
4310 | } |
4311 | else | |
4312 | { | |
4313 | register int delta1; | |
4314 | register int opht = (*sizefun) (parent); | |
4315 | ||
3578db3c | 4316 | if (opht <= XINT (*sizep) + delta) |
daf516d3 RS |
4317 | { |
4318 | /* If trying to grow this window to or beyond size of the parent, | |
4319 | just delete all the sibling windows. */ | |
dc1ab1ee | 4320 | Lisp_Object start, tem, next; |
daf516d3 | 4321 | |
dc1ab1ee RS |
4322 | start = XWINDOW (parent)->vchild; |
4323 | if (NILP (start)) | |
4324 | start = XWINDOW (parent)->hchild; | |
daf516d3 | 4325 | |
dc1ab1ee RS |
4326 | /* Delete any siblings that come after WINDOW. */ |
4327 | tem = XWINDOW (window)->next; | |
daf516d3 RS |
4328 | while (! NILP (tem)) |
4329 | { | |
4330 | next = XWINDOW (tem)->next; | |
dc1ab1ee RS |
4331 | delete_window (tem); |
4332 | tem = next; | |
4333 | } | |
4334 | ||
4335 | /* Delete any siblings that come after WINDOW. | |
4336 | Note that if START is not WINDOW, then WINDOW still | |
4337 | Fhas siblings, so WINDOW has not yet replaced its parent. */ | |
4338 | tem = start; | |
4339 | while (! EQ (tem, window)) | |
4340 | { | |
4341 | next = XWINDOW (tem)->next; | |
4342 | delete_window (tem); | |
daf516d3 RS |
4343 | tem = next; |
4344 | } | |
4345 | } | |
7ab12479 | 4346 | else |
233a4a2c GM |
4347 | { |
4348 | /* Otherwise, make delta1 just right so that if we add | |
4349 | delta1 lines to this window and to the parent, and then | |
4350 | shrink the parent back to its original size, the new | |
4351 | proportional size of this window will increase by delta. | |
4352 | ||
4353 | The function size_window will compute the new height h' | |
4354 | of the window from delta1 as: | |
177c0ea7 | 4355 | |
233a4a2c GM |
4356 | e = delta1/n |
4357 | x = delta1 - delta1/n * n for the 1st resizable child | |
4358 | h' = h + e + x | |
4359 | ||
4360 | where n is the number of children that can be resized. | |
4361 | We can ignore x by choosing a delta1 that is a multiple of | |
4362 | n. We want the height of this window to come out as | |
177c0ea7 | 4363 | |
233a4a2c GM |
4364 | h' = h + delta |
4365 | ||
4366 | So, delta1 must be | |
177c0ea7 | 4367 | |
233a4a2c GM |
4368 | h + e = h + delta |
4369 | delta1/n = delta | |
4370 | delta1 = n * delta. | |
4371 | ||
a5731348 | 4372 | The number of children n equals the number of resizable |
233a4a2c | 4373 | children of this window + 1 because we know window itself |
6e0dca3d | 4374 | is resizable (otherwise we would have signalled an error). */ |
233a4a2c GM |
4375 | |
4376 | struct window *w = XWINDOW (window); | |
4377 | Lisp_Object s; | |
4378 | int n = 1; | |
4379 | ||
4380 | for (s = w->next; !NILP (s); s = XWINDOW (s)->next) | |
5afc696a | 4381 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c GM |
4382 | ++n; |
4383 | for (s = w->prev; !NILP (s); s = XWINDOW (s)->prev) | |
5afc696a | 4384 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c GM |
4385 | ++n; |
4386 | ||
4387 | delta1 = n * delta; | |
7ab12479 | 4388 | |
daf516d3 RS |
4389 | /* Add delta1 lines or columns to this window, and to the parent, |
4390 | keeping things consistent while not affecting siblings. */ | |
4391 | XSETINT (CURSIZE (parent), opht + delta1); | |
4392 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
4393 | ||
4394 | /* Squeeze out delta1 lines or columns from our parent, | |
4395 | shriking this window and siblings proportionately. | |
4396 | This brings parent back to correct size. | |
4397 | Delta1 was calculated so this makes this window the desired size, | |
4398 | taking it all out of the siblings. */ | |
4399 | (*setsizefun) (parent, opht, 0); | |
4400 | ||
4401 | } | |
7ab12479 JB |
4402 | } |
4403 | ||
d834a2e9 | 4404 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 4405 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
4406 | |
4407 | /* Adjust glyph matrices. */ | |
4408 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 4409 | } |
c1636aa6 | 4410 | |
0d384044 RS |
4411 | |
4412 | /* Adjust the size of WINDOW by DELTA, moving only its trailing edge. | |
4413 | HORIZ_FLAG nonzero means adjust the width, moving the right edge. | |
4414 | zero means adjust the height, moving the bottom edge. | |
4415 | ||
4416 | Following siblings of the selected window are resized to fulfill | |
4417 | the size request. If they become too small in the process, they | |
4418 | are not deleted; instead, we signal an error. */ | |
4419 | ||
4420 | static void | |
4421 | adjust_window_trailing_edge (window, delta, horiz_flag) | |
4422 | Lisp_Object window; | |
4423 | int delta, horiz_flag; | |
4424 | { | |
4425 | Lisp_Object parent, child; | |
4426 | struct window *p; | |
4427 | Lisp_Object old_config = Fcurrent_window_configuration (Qnil); | |
4428 | int delcount = window_deletion_count; | |
4429 | ||
4430 | /* Check values of window_min_width and window_min_height for | |
4431 | validity. */ | |
4432 | check_min_window_sizes (); | |
4433 | ||
4434 | if (NILP (window)) | |
4435 | window = Fselected_window (); | |
4436 | ||
4437 | CHECK_WINDOW (window); | |
4438 | ||
4439 | /* Give up if this window cannot be resized. */ | |
4440 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) | |
4441 | error ("Window is not resizable"); | |
4442 | ||
4443 | while (1) | |
4444 | { | |
bd99e242 RS |
4445 | Lisp_Object first_parallel = Qnil; |
4446 | ||
c32de52a | 4447 | if (NILP (window)) |
0d384044 | 4448 | { |
5fe0b054 RS |
4449 | /* This happens if WINDOW on the previous iteration was |
4450 | at top level of the window tree. */ | |
0d384044 | 4451 | Fset_window_configuration (old_config); |
c32de52a | 4452 | error ("Specified window edge is fixed"); |
0d384044 RS |
4453 | } |
4454 | ||
c32de52a RS |
4455 | p = XWINDOW (window); |
4456 | parent = p->parent; | |
4457 | ||
bd99e242 RS |
4458 | /* See if this level has windows in parallel in the specified |
4459 | direction. If so, set FIRST_PARALLEL to the first one. */ | |
4460 | if (horiz_flag) | |
4461 | { | |
4462 | if (! NILP (parent) && !NILP (XWINDOW (parent)->vchild)) | |
4463 | first_parallel = XWINDOW (parent)->vchild; | |
5fe0b054 RS |
4464 | else if (NILP (parent) && !NILP (p->next)) |
4465 | { | |
4466 | /* Handle the vertical chain of main window and minibuffer | |
4467 | which has no parent. */ | |
4468 | first_parallel = window; | |
4469 | while (! NILP (XWINDOW (first_parallel)->prev)) | |
4470 | first_parallel = XWINDOW (first_parallel)->prev; | |
4471 | } | |
bd99e242 RS |
4472 | } |
4473 | else | |
4474 | { | |
4475 | if (! NILP (parent) && !NILP (XWINDOW (parent)->hchild)) | |
4476 | first_parallel = XWINDOW (parent)->hchild; | |
4477 | } | |
4478 | ||
c32de52a | 4479 | /* If this level's succession is in the desired dimension, |
5fe0b054 RS |
4480 | and this window is the last one, and there is no higher level, |
4481 | its trailing edge is fixed. */ | |
4482 | if (NILP (XWINDOW (window)->next) && NILP (first_parallel) | |
4483 | && NILP (parent)) | |
c32de52a RS |
4484 | { |
4485 | Fset_window_configuration (old_config); | |
4486 | error ("Specified window edge is fixed"); | |
4487 | } | |
4488 | ||
0d384044 RS |
4489 | /* Don't make this window too small. */ |
4490 | if (XINT (CURSIZE (window)) + delta | |
4491 | < (horiz_flag ? window_min_width : window_min_height)) | |
4492 | { | |
4493 | Fset_window_configuration (old_config); | |
4494 | error ("Cannot adjust window size as specified"); | |
4495 | } | |
4496 | ||
4497 | /* Clear out some redisplay caches. */ | |
4498 | XSETFASTINT (p->last_modified, 0); | |
4499 | XSETFASTINT (p->last_overlay_modified, 0); | |
4500 | ||
4501 | /* Adjust this window's edge. */ | |
4502 | XSETINT (CURSIZE (window), | |
4503 | XINT (CURSIZE (window)) + delta); | |
4504 | ||
4505 | /* If this window has following siblings in the desired dimension, | |
bd99e242 RS |
4506 | make them smaller, and exit the loop. |
4507 | ||
0d384044 RS |
4508 | (If we reach the top of the tree and can never do this, |
4509 | we will fail and report an error, above.) */ | |
bd99e242 | 4510 | if (NILP (first_parallel)) |
0d384044 | 4511 | { |
c32de52a | 4512 | if (!NILP (p->next)) |
0d384044 | 4513 | { |
e99c7521 JD |
4514 | /* This may happen for the minibuffer. In that case |
4515 | the window_deletion_count check below does not work. */ | |
a53d44a8 | 4516 | if (XINT (CURSIZE (p->next)) - delta <= 0) |
e99c7521 JD |
4517 | { |
4518 | Fset_window_configuration (old_config); | |
4519 | error ("Cannot adjust window size as specified"); | |
4520 | } | |
4521 | ||
0d384044 RS |
4522 | XSETINT (CURBEG (p->next), |
4523 | XINT (CURBEG (p->next)) + delta); | |
4524 | size_window (p->next, XINT (CURSIZE (p->next)) - delta, | |
5fe0b054 | 4525 | horiz_flag, 0, 1, 0); |
0d384044 RS |
4526 | break; |
4527 | } | |
4528 | } | |
4529 | else | |
4530 | /* Here we have a chain of parallel siblings, in the other dimension. | |
4531 | Change the size of the other siblings. */ | |
bd99e242 | 4532 | for (child = first_parallel; |
0d384044 RS |
4533 | ! NILP (child); |
4534 | child = XWINDOW (child)->next) | |
4535 | if (! EQ (child, window)) | |
4536 | size_window (child, XINT (CURSIZE (child)) + delta, | |
5fe0b054 | 4537 | horiz_flag, 0, 0, 1); |
0d384044 RS |
4538 | |
4539 | window = parent; | |
4540 | } | |
4541 | ||
4542 | /* If we made a window so small it got deleted, | |
4543 | we failed. Report failure. */ | |
4544 | if (delcount != window_deletion_count) | |
4545 | { | |
4546 | Fset_window_configuration (old_config); | |
4547 | error ("Cannot adjust window size as specified"); | |
4548 | } | |
4549 | ||
4550 | /* Adjust glyph matrices. */ | |
4551 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
4552 | } | |
4553 | ||
7ab12479 JB |
4554 | #undef CURBEG |
4555 | #undef CURSIZE | |
4556 | ||
0d384044 RS |
4557 | DEFUN ("adjust-window-trailing-edge", Fadjust_window_trailing_edge, |
4558 | Sadjust_window_trailing_edge, 3, 3, 0, | |
4559 | doc: /* Adjust the bottom or right edge of WINDOW by DELTA. | |
56ebfae2 | 4560 | If HORIZONTAL is non-nil, that means adjust the width, moving the right edge. |
0d384044 RS |
4561 | Otherwise, adjust the height, moving the bottom edge. |
4562 | ||
4563 | Following siblings of the selected window are resized to fulfill | |
4564 | the size request. If they become too small in the process, they | |
4565 | are not deleted; instead, we signal an error. */) | |
4566 | (window, delta, horizontal) | |
4567 | Lisp_Object window, delta, horizontal; | |
4568 | { | |
4569 | CHECK_NUMBER (delta); | |
4570 | adjust_window_trailing_edge (window, XINT (delta), !NILP (horizontal)); | |
4571 | ||
4572 | if (! NILP (Vwindow_configuration_change_hook)) | |
4573 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
4574 | ||
4575 | return Qnil; | |
4576 | } | |
4577 | ||
5500c422 | 4578 | |
f984d4fc GM |
4579 | \f |
4580 | /*********************************************************************** | |
4581 | Resizing Mini-Windows | |
4582 | ***********************************************************************/ | |
4583 | ||
4584 | static void shrink_window_lowest_first P_ ((struct window *, int)); | |
f984d4fc | 4585 | |
43b4a21f GM |
4586 | enum save_restore_action |
4587 | { | |
4588 | CHECK_ORIG_SIZES, | |
4589 | SAVE_ORIG_SIZES, | |
4590 | RESTORE_ORIG_SIZES | |
4591 | }; | |
4592 | ||
177c0ea7 | 4593 | static int save_restore_orig_size P_ ((struct window *, |
43b4a21f | 4594 | enum save_restore_action)); |
f984d4fc GM |
4595 | |
4596 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
4597 | from lowest windows first. */ | |
4598 | ||
4599 | static void | |
4600 | shrink_window_lowest_first (w, height) | |
4601 | struct window *w; | |
4602 | int height; | |
4603 | { | |
4604 | struct window *c; | |
4605 | Lisp_Object child; | |
4606 | int old_height; | |
4607 | ||
4608 | xassert (!MINI_WINDOW_P (w)); | |
4609 | ||
4610 | /* Set redisplay hints. */ | |
4611 | XSETFASTINT (w->last_modified, 0); | |
4612 | XSETFASTINT (w->last_overlay_modified, 0); | |
4613 | windows_or_buffers_changed++; | |
4614 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
4615 | ||
949cf20f KS |
4616 | old_height = XFASTINT (w->total_lines); |
4617 | XSETFASTINT (w->total_lines, height); | |
f984d4fc GM |
4618 | |
4619 | if (!NILP (w->hchild)) | |
4620 | { | |
4621 | for (child = w->hchild; !NILP (child); child = c->next) | |
4622 | { | |
4623 | c = XWINDOW (child); | |
949cf20f | 4624 | c->top_line = w->top_line; |
f984d4fc GM |
4625 | shrink_window_lowest_first (c, height); |
4626 | } | |
4627 | } | |
4628 | else if (!NILP (w->vchild)) | |
4629 | { | |
4630 | Lisp_Object last_child; | |
4631 | int delta = old_height - height; | |
4632 | int last_top; | |
6bbd7a29 GM |
4633 | |
4634 | last_child = Qnil; | |
177c0ea7 | 4635 | |
f984d4fc GM |
4636 | /* Find the last child. We are taking space from lowest windows |
4637 | first, so we iterate over children from the last child | |
4638 | backwards. */ | |
4639 | for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next) | |
4640 | last_child = child; | |
4641 | ||
4642 | /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */ | |
4643 | for (child = last_child; delta && !NILP (child); child = c->prev) | |
4644 | { | |
4645 | int this_one; | |
177c0ea7 | 4646 | |
f984d4fc | 4647 | c = XWINDOW (child); |
949cf20f | 4648 | this_one = XFASTINT (c->total_lines) - MIN_SAFE_WINDOW_HEIGHT; |
f984d4fc GM |
4649 | |
4650 | if (this_one > delta) | |
4651 | this_one = delta; | |
4652 | ||
949cf20f | 4653 | shrink_window_lowest_first (c, XFASTINT (c->total_lines) - this_one); |
f984d4fc GM |
4654 | delta -= this_one; |
4655 | } | |
4656 | ||
4657 | /* Compute new positions. */ | |
949cf20f | 4658 | last_top = XINT (w->top_line); |
f984d4fc GM |
4659 | for (child = w->vchild; !NILP (child); child = c->next) |
4660 | { | |
4661 | c = XWINDOW (child); | |
949cf20f KS |
4662 | c->top_line = make_number (last_top); |
4663 | shrink_window_lowest_first (c, XFASTINT (c->total_lines)); | |
4664 | last_top += XFASTINT (c->total_lines); | |
f984d4fc GM |
4665 | } |
4666 | } | |
4667 | } | |
4668 | ||
4669 | ||
43b4a21f GM |
4670 | /* Save, restore, or check positions and sizes in the window tree |
4671 | rooted at W. ACTION says what to do. | |
f984d4fc | 4672 | |
949cf20f KS |
4673 | If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and |
4674 | orig_total_lines members are valid for all windows in the window | |
4675 | tree. Value is non-zero if they are valid. | |
177c0ea7 | 4676 | |
43b4a21f | 4677 | If ACTION is SAVE_ORIG_SIZES, save members top and height in |
949cf20f | 4678 | orig_top_line and orig_total_lines for all windows in the tree. |
43b4a21f | 4679 | |
949cf20f KS |
4680 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from values |
4681 | stored in orig_top_line and orig_total_lines for all windows. */ | |
43b4a21f GM |
4682 | |
4683 | static int | |
4684 | save_restore_orig_size (w, action) | |
f984d4fc | 4685 | struct window *w; |
43b4a21f | 4686 | enum save_restore_action action; |
f984d4fc | 4687 | { |
43b4a21f GM |
4688 | int success_p = 1; |
4689 | ||
f984d4fc GM |
4690 | while (w) |
4691 | { | |
4692 | if (!NILP (w->hchild)) | |
43b4a21f GM |
4693 | { |
4694 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
4695 | success_p = 0; | |
4696 | } | |
f984d4fc | 4697 | else if (!NILP (w->vchild)) |
43b4a21f GM |
4698 | { |
4699 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
4700 | success_p = 0; | |
4701 | } | |
177c0ea7 | 4702 | |
43b4a21f | 4703 | switch (action) |
f984d4fc | 4704 | { |
43b4a21f | 4705 | case CHECK_ORIG_SIZES: |
949cf20f | 4706 | if (!INTEGERP (w->orig_top_line) || !INTEGERP (w->orig_total_lines)) |
43b4a21f GM |
4707 | return 0; |
4708 | break; | |
4709 | ||
4710 | case SAVE_ORIG_SIZES: | |
949cf20f KS |
4711 | w->orig_top_line = w->top_line; |
4712 | w->orig_total_lines = w->total_lines; | |
43b4a21f GM |
4713 | XSETFASTINT (w->last_modified, 0); |
4714 | XSETFASTINT (w->last_overlay_modified, 0); | |
4715 | break; | |
4716 | ||
4717 | case RESTORE_ORIG_SIZES: | |
949cf20f KS |
4718 | xassert (INTEGERP (w->orig_top_line) && INTEGERP (w->orig_total_lines)); |
4719 | w->top_line = w->orig_top_line; | |
4720 | w->total_lines = w->orig_total_lines; | |
4721 | w->orig_total_lines = w->orig_top_line = Qnil; | |
43b4a21f GM |
4722 | XSETFASTINT (w->last_modified, 0); |
4723 | XSETFASTINT (w->last_overlay_modified, 0); | |
4724 | break; | |
4725 | ||
4726 | default: | |
4727 | abort (); | |
f984d4fc | 4728 | } |
43b4a21f | 4729 | |
f984d4fc GM |
4730 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
4731 | } | |
43b4a21f GM |
4732 | |
4733 | return success_p; | |
f984d4fc GM |
4734 | } |
4735 | ||
4736 | ||
4737 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
4738 | without deleting other windows. */ | |
4739 | ||
4740 | void | |
4741 | grow_mini_window (w, delta) | |
4742 | struct window *w; | |
4743 | int delta; | |
4744 | { | |
4745 | struct frame *f = XFRAME (w->frame); | |
4746 | struct window *root; | |
177c0ea7 | 4747 | |
f984d4fc GM |
4748 | xassert (MINI_WINDOW_P (w)); |
4749 | xassert (delta >= 0); | |
177c0ea7 | 4750 | |
f984d4fc GM |
4751 | /* Check values of window_min_width and window_min_height for |
4752 | validity. */ | |
4753 | check_min_window_sizes (); | |
4754 | ||
4755 | /* Compute how much we can enlarge the mini-window without deleting | |
4756 | other windows. */ | |
4757 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4758 | if (delta) | |
4759 | { | |
4760 | int min_height = window_min_size (root, 0, 0, 0); | |
949cf20f | 4761 | if (XFASTINT (root->total_lines) - delta < min_height) |
8b8bd9c6 | 4762 | /* Note that the root window may already be smaller than |
eafa3196 | 4763 | min_height. */ |
949cf20f | 4764 | delta = max (0, XFASTINT (root->total_lines) - min_height); |
f984d4fc | 4765 | } |
177c0ea7 | 4766 | |
f984d4fc GM |
4767 | if (delta) |
4768 | { | |
4769 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
4770 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
4771 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
4772 | |
4773 | /* Shrink other windows. */ | |
949cf20f | 4774 | shrink_window_lowest_first (root, XFASTINT (root->total_lines) - delta); |
f984d4fc GM |
4775 | |
4776 | /* Grow the mini-window. */ | |
949cf20f KS |
4777 | w->top_line = make_number (XFASTINT (root->top_line) + XFASTINT (root->total_lines)); |
4778 | w->total_lines = make_number (XFASTINT (w->total_lines) + delta); | |
f984d4fc GM |
4779 | XSETFASTINT (w->last_modified, 0); |
4780 | XSETFASTINT (w->last_overlay_modified, 0); | |
177c0ea7 | 4781 | |
f984d4fc GM |
4782 | adjust_glyphs (f); |
4783 | } | |
4784 | } | |
4785 | ||
4786 | ||
86c8e823 GM |
4787 | /* Shrink mini-window W. If there is recorded info about window sizes |
4788 | before a call to grow_mini_window, restore recorded window sizes. | |
4789 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
4790 | line. */ | |
f984d4fc GM |
4791 | |
4792 | void | |
4793 | shrink_mini_window (w) | |
4794 | struct window *w; | |
4795 | { | |
4796 | struct frame *f = XFRAME (w->frame); | |
4797 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4798 | ||
43b4a21f | 4799 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 4800 | { |
43b4a21f | 4801 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
4802 | adjust_glyphs (f); |
4803 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
4804 | windows_or_buffers_changed = 1; | |
4805 | } | |
949cf20f | 4806 | else if (XFASTINT (w->total_lines) > 1) |
86c8e823 | 4807 | { |
0130fe1a GM |
4808 | /* Distribute the additional lines of the mini-window |
4809 | among the other windows. */ | |
86c8e823 GM |
4810 | Lisp_Object window; |
4811 | XSETWINDOW (window, w); | |
56ebfae2 | 4812 | enlarge_window (window, 1 - XFASTINT (w->total_lines), 0); |
86c8e823 | 4813 | } |
f984d4fc GM |
4814 | } |
4815 | ||
4816 | ||
4817 | \f | |
5500c422 GM |
4818 | /* Mark window cursors off for all windows in the window tree rooted |
4819 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4820 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4821 | the frame are cleared. */ | |
4822 | ||
4823 | void | |
4824 | mark_window_cursors_off (w) | |
4825 | struct window *w; | |
4826 | { | |
4827 | while (w) | |
4828 | { | |
4829 | if (!NILP (w->hchild)) | |
4830 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4831 | else if (!NILP (w->vchild)) | |
4832 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
4833 | else | |
4834 | w->phys_cursor_on_p = 0; | |
4835 | ||
4836 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4837 | } | |
4838 | } | |
4839 | ||
4840 | ||
e9c195b1 | 4841 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4842 | |
4843 | int | |
4844 | window_internal_height (w) | |
4845 | struct window *w; | |
4846 | { | |
949cf20f | 4847 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4848 | |
e9c195b1 GM |
4849 | if (!MINI_WINDOW_P (w)) |
4850 | { | |
4851 | if (!NILP (w->parent) | |
4852 | || !NILP (w->vchild) | |
4853 | || !NILP (w->hchild) | |
4854 | || !NILP (w->next) | |
4855 | || !NILP (w->prev) | |
4856 | || WINDOW_WANTS_MODELINE_P (w)) | |
4857 | --ht; | |
7ab12479 | 4858 | |
e9c195b1 GM |
4859 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4860 | --ht; | |
4861 | } | |
7ab12479 JB |
4862 | |
4863 | return ht; | |
4864 | } | |
4865 | ||
535e0b8e JB |
4866 | |
4867 | /* Return the number of columns in W. | |
a3c87d4e | 4868 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 4869 | separating W from the sibling to its right. */ |
5500c422 | 4870 | |
535e0b8e | 4871 | int |
949cf20f | 4872 | window_box_text_cols (w) |
535e0b8e JB |
4873 | struct window *w; |
4874 | { | |
5500c422 | 4875 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
949cf20f | 4876 | int width = XINT (w->total_cols); |
535e0b8e | 4877 | |
949cf20f | 4878 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) |
5500c422 | 4879 | /* Scroll bars occupy a few columns. */ |
949cf20f KS |
4880 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); |
4881 | else if (!FRAME_WINDOW_P (f) | |
4882 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
5500c422 GM |
4883 | /* The column of `|' characters separating side-by-side windows |
4884 | occupies one column only. */ | |
4885 | width -= 1; | |
4886 | ||
5500c422 | 4887 | if (FRAME_WINDOW_P (f)) |
949cf20f KS |
4888 | /* On window-systems, fringes and display margins cannot be |
4889 | used for normal text. */ | |
4890 | width -= (WINDOW_FRINGE_COLS (w) | |
4891 | + WINDOW_LEFT_MARGIN_COLS (w) | |
4892 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
111e5992 RS |
4893 | |
4894 | return width; | |
535e0b8e JB |
4895 | } |
4896 | ||
5500c422 GM |
4897 | \f |
4898 | /************************************************************************ | |
4899 | Window Scrolling | |
4900 | ***********************************************************************/ | |
535e0b8e | 4901 | |
5500c422 | 4902 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4903 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4904 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4905 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4906 | means don't signal an error if we try to move over BEGV or ZV, | |
4907 | respectively. */ | |
7ab12479 | 4908 | |
101d1605 RS |
4909 | static void |
4910 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
4911 | Lisp_Object window; |
4912 | int n; | |
101d1605 | 4913 | int whole; |
f8026fd8 | 4914 | int noerror; |
5500c422 | 4915 | { |
cba59f77 RS |
4916 | immediate_quit = 1; |
4917 | ||
5500c422 GM |
4918 | /* If we must, use the pixel-based version which is much slower than |
4919 | the line-based one but can handle varying line heights. */ | |
4920 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
4921 | window_scroll_pixel_based (window, n, whole, noerror); | |
4922 | else | |
4923 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4924 | |
4925 | immediate_quit = 0; | |
5500c422 GM |
4926 | } |
4927 | ||
4928 | ||
4929 | /* Implementation of window_scroll that works based on pixel line | |
4930 | heights. See the comment of window_scroll for parameter | |
4931 | descriptions. */ | |
4932 | ||
4933 | static void | |
4934 | window_scroll_pixel_based (window, n, whole, noerror) | |
4935 | Lisp_Object window; | |
4936 | int n; | |
4937 | int whole; | |
4938 | int noerror; | |
4939 | { | |
4940 | struct it it; | |
4941 | struct window *w = XWINDOW (window); | |
4942 | struct text_pos start; | |
5500c422 | 4943 | int this_scroll_margin; |
5cdb3cf3 MB |
4944 | /* True if we fiddled the window vscroll field without really scrolling. */ |
4945 | int vscrolled = 0; | |
5a857365 | 4946 | int x, y, rtop, rbot, rowh, vpos; |
5500c422 GM |
4947 | |
4948 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
177c0ea7 | 4949 | |
5500c422 | 4950 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
4951 | the screen. Allow PT to be partially visible, otherwise |
4952 | something like (scroll-down 1) with PT in the line before | |
4953 | the partially visible one would recenter. */ | |
5a857365 KS |
4954 | |
4955 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 GM |
4956 | { |
4957 | /* Move backward half the height of the window. Performance note: | |
4958 | vmotion used here is about 10% faster, but would give wrong | |
4959 | results for variable height lines. */ | |
4960 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
4961 | it.current_y = it.last_visible_y; | |
f204989e | 4962 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 4963 | |
5500c422 GM |
4964 | /* The function move_iterator_vertically may move over more than |
4965 | the specified y-distance. If it->w is small, e.g. a | |
4966 | mini-buffer window, we may end up in front of the window's | |
4967 | display area. This is the case when Start displaying at the | |
4968 | start of the line containing PT in this case. */ | |
4969 | if (it.current_y <= 0) | |
4970 | { | |
4971 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 4972 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
4973 | it.current_y = 0; |
4974 | } | |
4975 | ||
4976 | start = it.current.pos; | |
4977 | } | |
e56263e5 KS |
4978 | else if (auto_window_vscroll_p) |
4979 | { | |
5a857365 | 4980 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
4981 | { |
4982 | int px; | |
4983 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
4984 | if (whole) | |
e856c216 KS |
4985 | dy = max ((window_box_height (w) |
4986 | - next_screen_context_lines * dy), | |
4987 | dy); | |
e56263e5 KS |
4988 | dy *= n; |
4989 | ||
5a857365 | 4990 | if (n < 0) |
e56263e5 | 4991 | { |
5a857365 KS |
4992 | /* Only vscroll backwards if already vscrolled forwards. */ |
4993 | if (w->vscroll < 0 && rtop > 0) | |
4994 | { | |
4995 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
4996 | Fset_window_vscroll (window, make_number (px), Qt); | |
4997 | return; | |
4998 | } | |
e56263e5 | 4999 | } |
5a857365 | 5000 | if (n > 0) |
e56263e5 | 5001 | { |
5a857365 KS |
5002 | /* Do vscroll if already vscrolled or only display line. */ |
5003 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
5004 | { | |
5005 | px = max (0, -w->vscroll + min (rbot, dy)); | |
5006 | Fset_window_vscroll (window, make_number (px), Qt); | |
5007 | return; | |
5008 | } | |
5009 | ||
5010 | /* Maybe modify window start instead of scrolling. */ | |
5011 | if (rbot > 0 || w->vscroll < 0) | |
5012 | { | |
5013 | int spos; | |
5014 | ||
5015 | Fset_window_vscroll (window, make_number (0), Qt); | |
5016 | /* If there are other text lines above the current row, | |
5017 | move window start to current row. Else to next row. */ | |
5018 | if (rbot > 0) | |
5019 | spos = XINT (Fline_beginning_position (Qnil)); | |
5020 | else | |
5021 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
5022 | set_marker_restricted (w->start, make_number (spos), | |
5023 | w->buffer); | |
5024 | w->start_at_line_beg = Qt; | |
5025 | w->update_mode_line = Qt; | |
5026 | XSETFASTINT (w->last_modified, 0); | |
5027 | XSETFASTINT (w->last_overlay_modified, 0); | |
5028 | /* Set force_start so that redisplay_window will run the | |
5029 | window-scroll-functions. */ | |
5030 | w->force_start = Qt; | |
5031 | return; | |
5032 | } | |
e56263e5 KS |
5033 | } |
5034 | } | |
5a857365 | 5035 | /* Cancel previous vscroll. */ |
e56263e5 KS |
5036 | Fset_window_vscroll (window, make_number (0), Qt); |
5037 | } | |
5500c422 | 5038 | |
d0c38d63 | 5039 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
5040 | point in the same window line as it is now, so get that line. */ |
5041 | if (!NILP (Vscroll_preserve_screen_position)) | |
5042 | { | |
c525d842 CY |
5043 | /* We preserve the goal pixel coordinate across consecutive |
5044 | calls to scroll-up or scroll-down. This avoids the | |
5045 | possibility of point becoming "stuck" on a tall line when | |
5046 | scrolling by one line. */ | |
66fe93d1 | 5047 | if (window_scroll_pixel_based_preserve_y < 0 |
7d619454 SM |
5048 | || (!EQ (current_kboard->Vlast_command, Qscroll_up) |
5049 | && !EQ (current_kboard->Vlast_command, Qscroll_down))) | |
c525d842 CY |
5050 | { |
5051 | start_display (&it, w, start); | |
5052 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 5053 | window_scroll_pixel_based_preserve_y = it.current_y; |
c525d842 | 5054 | } |
5500c422 GM |
5055 | } |
5056 | else | |
66fe93d1 | 5057 | window_scroll_pixel_based_preserve_y = -1; |
5500c422 GM |
5058 | |
5059 | /* Move iterator it from start the specified distance forward or | |
5060 | backward. The result is the new window start. */ | |
5061 | start_display (&it, w, start); | |
5062 | if (whole) | |
5063 | { | |
e856c216 KS |
5064 | int start_pos = IT_CHARPOS (it); |
5065 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
5066 | dy = max ((window_box_height (w) | |
5067 | - next_screen_context_lines * dy), | |
5068 | dy) * n; | |
d72340d4 GM |
5069 | |
5070 | /* Note that move_it_vertically always moves the iterator to the | |
5071 | start of a line. So, if the last line doesn't have a newline, | |
5072 | we would end up at the start of the line ending at ZV. */ | |
5073 | if (dy <= 0) | |
e856c216 KS |
5074 | { |
5075 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 5076 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
5077 | looking at an image that is taller that the window height. */ |
5078 | while (start_pos == IT_CHARPOS (it) | |
5079 | && start_pos > BEGV) | |
5080 | move_it_by_lines (&it, -1, 1); | |
5081 | } | |
d72340d4 | 5082 | else if (dy > 0) |
bed83ee4 | 5083 | { |
bed83ee4 KS |
5084 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
5085 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 5086 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
5087 | looking at an image that is taller that the window height. */ |
5088 | while (start_pos == IT_CHARPOS (it) | |
5089 | && start_pos < ZV) | |
5090 | move_it_by_lines (&it, 1, 1); | |
5091 | } | |
5500c422 GM |
5092 | } |
5093 | else | |
5094 | move_it_by_lines (&it, n, 1); | |
5095 | ||
96ae58c8 RS |
5096 | /* We failed if we find ZV is already on the screen (scrolling up, |
5097 | means there's nothing past the end), or if we can't start any | |
5098 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 5099 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 5100 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 5101 | { |
5cdb3cf3 MB |
5102 | if (IT_CHARPOS (it) == ZV) |
5103 | { | |
07ce8b53 RS |
5104 | if (it.current_y < it.last_visible_y |
5105 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 5106 | > it.last_visible_y)) |
a74eca50 GM |
5107 | { |
5108 | /* The last line was only partially visible, make it fully | |
5109 | visible. */ | |
5110 | w->vscroll = (it.last_visible_y | |
5111 | - it.current_y + it.max_ascent + it.max_descent); | |
5112 | adjust_glyphs (it.f); | |
5113 | } | |
5cdb3cf3 MB |
5114 | else if (noerror) |
5115 | return; | |
cf402f3f | 5116 | else if (n < 0) /* could happen with empty buffers */ |
ba96a5cf | 5117 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 | 5118 | else |
ba96a5cf | 5119 | xsignal0 (Qend_of_buffer); |
5cdb3cf3 | 5120 | } |
5500c422 | 5121 | else |
5cdb3cf3 MB |
5122 | { |
5123 | if (w->vscroll != 0) | |
5124 | /* The first line was only partially visible, make it fully | |
5125 | visible. */ | |
5126 | w->vscroll = 0; | |
5127 | else if (noerror) | |
5128 | return; | |
5129 | else | |
ba96a5cf | 5130 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 MB |
5131 | } |
5132 | ||
5133 | /* If control gets here, then we vscrolled. */ | |
5134 | ||
5135 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
5136 | ||
5137 | /* Don't try to change the window start below. */ | |
5138 | vscrolled = 1; | |
5500c422 GM |
5139 | } |
5140 | ||
5cdb3cf3 MB |
5141 | if (! vscrolled) |
5142 | { | |
dad67609 RS |
5143 | int pos = IT_CHARPOS (it); |
5144 | int bytepos; | |
e68def1e AS |
5145 | |
5146 | /* If in the middle of a multi-glyph character move forward to | |
5147 | the next character. */ | |
5148 | if (in_display_vector_p (&it)) | |
5149 | { | |
5150 | ++pos; | |
5151 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
5152 | } | |
5153 | ||
5cdb3cf3 | 5154 | /* Set the window start, and set up the window for redisplay. */ |
dad67609 | 5155 | set_marker_restricted (w->start, make_number (pos), |
5cdb3cf3 | 5156 | w->buffer); |
dad67609 RS |
5157 | bytepos = XMARKER (w->start)->bytepos; |
5158 | w->start_at_line_beg = ((pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n') | |
5159 | ? Qt : Qnil); | |
5cdb3cf3 MB |
5160 | w->update_mode_line = Qt; |
5161 | XSETFASTINT (w->last_modified, 0); | |
5162 | XSETFASTINT (w->last_overlay_modified, 0); | |
5163 | /* Set force_start so that redisplay_window will run the | |
5164 | window-scroll-functions. */ | |
5165 | w->force_start = Qt; | |
5166 | } | |
177c0ea7 | 5167 | |
dc297565 RS |
5168 | /* The rest of this function uses current_y in a nonstandard way, |
5169 | not including the height of the header line if any. */ | |
5500c422 | 5170 | it.current_y = it.vpos = 0; |
177c0ea7 | 5171 | |
940f53e5 RS |
5172 | /* Move PT out of scroll margins. |
5173 | This code wants current_y to be zero at the window start position | |
5174 | even if there is a header line. */ | |
5175 | this_scroll_margin = max (0, scroll_margin); | |
5176 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); | |
5177 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); | |
5178 | ||
5179 | if (n > 0) | |
5500c422 | 5180 | { |
940f53e5 RS |
5181 | /* We moved the window start towards ZV, so PT may be now |
5182 | in the scroll margin at the top. */ | |
5183 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
5184 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
5185 | && (NILP (Vscroll_preserve_screen_position) | |
5186 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5187 | /* We found PT at a legitimate height. Leave it alone. */ |
5188 | ; | |
66fe93d1 | 5189 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 5190 | { |
fa3c3426 RS |
5191 | /* If we have a header line, take account of it. |
5192 | This is necessary because we set it.current_y to 0, above. */ | |
c525d842 | 5193 | move_it_to (&it, -1, -1, |
66fe93d1 LT |
5194 | window_scroll_pixel_based_preserve_y |
5195 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c525d842 | 5196 | -1, MOVE_TO_Y); |
940f53e5 RS |
5197 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5198 | } | |
5199 | else | |
5500c422 | 5200 | { |
5500c422 | 5201 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
5202 | { |
5203 | int prev = it.current_y; | |
5204 | move_it_by_lines (&it, 1, 1); | |
5205 | if (prev == it.current_y) | |
5206 | break; | |
5207 | } | |
5500c422 GM |
5208 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5209 | } | |
940f53e5 RS |
5210 | } |
5211 | else if (n < 0) | |
5212 | { | |
5213 | int charpos, bytepos; | |
aed328bf | 5214 | int partial_p; |
940f53e5 | 5215 | |
66fe93d1 LT |
5216 | /* Save our position, for the |
5217 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
5218 | charpos = IT_CHARPOS (it); |
5219 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 5220 | |
940f53e5 RS |
5221 | /* We moved the window start towards BEGV, so PT may be now |
5222 | in the scroll margin at the bottom. */ | |
5223 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
5224 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
5225 | - this_scroll_margin - 1), | |
5226 | -1, | |
940f53e5 RS |
5227 | MOVE_TO_POS | MOVE_TO_Y); |
5228 | ||
aed328bf KS |
5229 | /* Save our position, in case it's correct. */ |
5230 | charpos = IT_CHARPOS (it); | |
5231 | bytepos = IT_BYTEPOS (it); | |
5232 | ||
5233 | /* See if point is on a partially visible line at the end. */ | |
5234 | if (it.what == IT_EOB) | |
5235 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
5236 | else | |
5237 | { | |
5238 | move_it_by_lines (&it, 1, 1); | |
5239 | partial_p = it.current_y > it.last_visible_y; | |
5240 | } | |
5241 | ||
bdf4ec93 RS |
5242 | if (charpos == PT && !partial_p |
5243 | && (NILP (Vscroll_preserve_screen_position) | |
5244 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5245 | /* We found PT before we found the display margin, so PT is ok. */ |
5246 | ; | |
66fe93d1 | 5247 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 RS |
5248 | { |
5249 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5250 | start_display (&it, w, start); | |
c525d842 CY |
5251 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
5252 | here because we called start_display again and did not | |
5253 | alter it.current_y this time. */ | |
66fe93d1 LT |
5254 | move_it_to (&it, -1, -1, window_scroll_pixel_based_preserve_y, -1, |
5255 | MOVE_TO_Y); | |
940f53e5 RS |
5256 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5257 | } | |
5258 | else | |
5259 | { | |
aed328bf | 5260 | if (partial_p) |
5cdb3cf3 MB |
5261 | /* The last line was only partially visible, so back up two |
5262 | lines to make sure we're on a fully visible line. */ | |
5263 | { | |
5264 | move_it_by_lines (&it, -2, 0); | |
5265 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
5266 | } | |
5267 | else | |
5268 | /* No, the position we saved is OK, so use it. */ | |
5269 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
5270 | } |
5271 | } | |
5272 | } | |
5273 | ||
5274 | ||
5275 | /* Implementation of window_scroll that works based on screen lines. | |
5276 | See the comment of window_scroll for parameter descriptions. */ | |
5277 | ||
5278 | static void | |
5279 | window_scroll_line_based (window, n, whole, noerror) | |
5280 | Lisp_Object window; | |
5281 | int n; | |
5282 | int whole; | |
5283 | int noerror; | |
7ab12479 JB |
5284 | { |
5285 | register struct window *w = XWINDOW (window); | |
5500c422 | 5286 | register int opoint = PT, opoint_byte = PT_BYTE; |
b73ea88e | 5287 | register int pos, pos_byte; |
7ab12479 JB |
5288 | register int ht = window_internal_height (w); |
5289 | register Lisp_Object tem; | |
5290 | int lose; | |
5500c422 | 5291 | Lisp_Object bolp; |
345d45b2 | 5292 | int startpos; |
101d1605 RS |
5293 | struct position posit; |
5294 | int original_vpos; | |
5295 | ||
d4e7cf01 GM |
5296 | /* If scrolling screen-fulls, compute the number of lines to |
5297 | scroll from the window's height. */ | |
5298 | if (whole) | |
5299 | n *= max (1, ht - next_screen_context_lines); | |
5300 | ||
101d1605 RS |
5301 | startpos = marker_position (w->start); |
5302 | ||
5303 | posit = *compute_motion (startpos, 0, 0, 0, | |
5304 | PT, ht, 0, | |
ec2b66c4 | 5305 | -1, XINT (w->hscroll), |
101d1605 RS |
5306 | 0, w); |
5307 | original_vpos = posit.vpos; | |
0a1f771a | 5308 | |
d834a2e9 | 5309 | XSETFASTINT (tem, PT); |
6ffdb539 | 5310 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 5311 | |
265a9e55 | 5312 | if (NILP (tem)) |
7ab12479 | 5313 | { |
cd2be1dd | 5314 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 5315 | startpos = PT; |
7ab12479 JB |
5316 | } |
5317 | ||
345d45b2 | 5318 | SET_PT (startpos); |
5ce7b543 | 5319 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 5320 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 5321 | pos = PT; |
b73ea88e | 5322 | pos_byte = PT_BYTE; |
7ab12479 | 5323 | bolp = Fbolp (); |
b73ea88e | 5324 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
5325 | |
5326 | if (lose) | |
f8026fd8 JB |
5327 | { |
5328 | if (noerror) | |
5329 | return; | |
5330 | else | |
ba96a5cf | 5331 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 5332 | } |
7ab12479 JB |
5333 | |
5334 | if (pos < ZV) | |
7ab12479 | 5335 | { |
0c7da84e RS |
5336 | int this_scroll_margin = scroll_margin; |
5337 | ||
5338 | /* Don't use a scroll margin that is negative or too large. */ | |
5339 | if (this_scroll_margin < 0) | |
5340 | this_scroll_margin = 0; | |
5341 | ||
949cf20f KS |
5342 | if (XINT (w->total_lines) < 4 * scroll_margin) |
5343 | this_scroll_margin = XINT (w->total_lines) / 4; | |
0c7da84e | 5344 | |
b73ea88e | 5345 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
5346 | w->start_at_line_beg = bolp; |
5347 | w->update_mode_line = Qt; | |
d834a2e9 | 5348 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 5349 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
5350 | /* Set force_start so that redisplay_window will run |
5351 | the window-scroll-functions. */ | |
5352 | w->force_start = Qt; | |
0c7da84e | 5353 | |
bdf4ec93 RS |
5354 | if (!NILP (Vscroll_preserve_screen_position) |
5355 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 5356 | { |
b73ea88e | 5357 | SET_PT_BOTH (pos, pos_byte); |
101d1605 | 5358 | Fvertical_motion (make_number (original_vpos), window); |
0c7da84e | 5359 | } |
101d1605 RS |
5360 | /* If we scrolled forward, put point enough lines down |
5361 | that it is outside the scroll margin. */ | |
5362 | else if (n > 0) | |
0c7da84e | 5363 | { |
101d1605 RS |
5364 | int top_margin; |
5365 | ||
5366 | if (this_scroll_margin > 0) | |
5367 | { | |
b73ea88e | 5368 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
5369 | Fvertical_motion (make_number (this_scroll_margin), window); |
5370 | top_margin = PT; | |
5371 | } | |
5372 | else | |
5373 | top_margin = pos; | |
5374 | ||
5375 | if (top_margin <= opoint) | |
b73ea88e | 5376 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 5377 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 5378 | { |
b73ea88e | 5379 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
5380 | Fvertical_motion (make_number (original_vpos), window); |
5381 | } | |
9317a85d | 5382 | else |
335406fc | 5383 | SET_PT (top_margin); |
0c7da84e | 5384 | } |
101d1605 | 5385 | else if (n < 0) |
7ab12479 | 5386 | { |
101d1605 RS |
5387 | int bottom_margin; |
5388 | ||
0c7da84e RS |
5389 | /* If we scrolled backward, put point near the end of the window |
5390 | but not within the scroll margin. */ | |
b73ea88e | 5391 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 5392 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
5393 | if (XFASTINT (tem) == ht - this_scroll_margin) |
5394 | bottom_margin = PT; | |
5395 | else | |
5396 | bottom_margin = PT + 1; | |
5397 | ||
5398 | if (bottom_margin > opoint) | |
b73ea88e | 5399 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 5400 | else |
101d1605 | 5401 | { |
5500c422 | 5402 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 5403 | { |
b73ea88e | 5404 | SET_PT_BOTH (pos, pos_byte); |
9317a85d RS |
5405 | Fvertical_motion (make_number (original_vpos), window); |
5406 | } | |
5407 | else | |
5408 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 5409 | } |
7ab12479 JB |
5410 | } |
5411 | } | |
5412 | else | |
f8026fd8 JB |
5413 | { |
5414 | if (noerror) | |
5415 | return; | |
5416 | else | |
ba96a5cf | 5417 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 5418 | } |
7ab12479 | 5419 | } |
5500c422 GM |
5420 | |
5421 | ||
5422 | /* Scroll selected_window up or down. If N is nil, scroll a | |
5423 | screen-full which is defined as the height of the window minus | |
5424 | next_screen_context_lines. If N is the symbol `-', scroll. | |
5425 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
5426 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
5427 | |
5428 | static void | |
5429 | scroll_command (n, direction) | |
5500c422 | 5430 | Lisp_Object n; |
7ab12479 JB |
5431 | int direction; |
5432 | { | |
331379bf | 5433 | int count = SPECPDL_INDEX (); |
7ab12479 | 5434 | |
5500c422 GM |
5435 | xassert (abs (direction) == 1); |
5436 | ||
5437 | /* If selected window's buffer isn't current, make it current for | |
5438 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 5439 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
5440 | { |
5441 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5442 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
5443 | |
5444 | /* Make redisplay consider other windows than just selected_window. */ | |
5445 | ++windows_or_buffers_changed; | |
95605e15 | 5446 | } |
7ab12479 | 5447 | |
265a9e55 | 5448 | if (NILP (n)) |
d4e7cf01 | 5449 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 5450 | else if (EQ (n, Qminus)) |
d4e7cf01 | 5451 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
5452 | else |
5453 | { | |
5454 | n = Fprefix_numeric_value (n); | |
101d1605 | 5455 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 5456 | } |
95605e15 JB |
5457 | |
5458 | unbind_to (count, Qnil); | |
7ab12479 JB |
5459 | } |
5460 | ||
5461 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
a0a37a6f LT |
5462 | doc: /* Scroll text of current window upward ARG lines. |
5463 | If ARG is omitted or nil, scroll upward by a near full screen. | |
fdb82f93 PJ |
5464 | A near full screen is `next-screen-context-lines' less than a full screen. |
5465 | Negative ARG means scroll downward. | |
5466 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5467 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5468 | (arg) | |
413430c5 | 5469 | Lisp_Object arg; |
7ab12479 | 5470 | { |
413430c5 | 5471 | scroll_command (arg, 1); |
7ab12479 JB |
5472 | return Qnil; |
5473 | } | |
5474 | ||
5475 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
a0a37a6f LT |
5476 | doc: /* Scroll text of current window down ARG lines. |
5477 | If ARG is omitted or nil, scroll down by a near full screen. | |
fdb82f93 PJ |
5478 | A near full screen is `next-screen-context-lines' less than a full screen. |
5479 | Negative ARG means scroll upward. | |
5480 | If ARG is the atom `-', scroll upward by nearly full screen. | |
5481 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5482 | (arg) | |
413430c5 | 5483 | Lisp_Object arg; |
7ab12479 | 5484 | { |
413430c5 | 5485 | scroll_command (arg, -1); |
7ab12479 JB |
5486 | return Qnil; |
5487 | } | |
ccd0664b RS |
5488 | \f |
5489 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 5490 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 5491 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
5492 | showing that buffer is used. |
5493 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5494 | specifies the window. This takes precedence over | |
5495 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5496 | () |
7ab12479 | 5497 | { |
ccd0664b | 5498 | Lisp_Object window; |
7ab12479 JB |
5499 | |
5500 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 5501 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
5502 | window = Vminibuf_scroll_window; |
5503 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 5504 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
5505 | { |
5506 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 5507 | if (NILP (window)) |
53f76081 | 5508 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
5509 | } |
5510 | else | |
dbc4e1c1 JB |
5511 | { |
5512 | /* Nothing specified; look for a neighboring window on the same | |
5513 | frame. */ | |
5514 | window = Fnext_window (selected_window, Qnil, Qnil); | |
5515 | ||
5516 | if (EQ (window, selected_window)) | |
5517 | /* That didn't get us anywhere; look for a window on another | |
5518 | visible frame. */ | |
5519 | do | |
5520 | window = Fnext_window (window, Qnil, Qt); | |
5521 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
5522 | && ! EQ (window, selected_window)); | |
5523 | } | |
5524 | ||
b7826503 | 5525 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
5526 | |
5527 | if (EQ (window, selected_window)) | |
5528 | error ("There is no other window"); | |
5529 | ||
ccd0664b RS |
5530 | return window; |
5531 | } | |
5532 | ||
5533 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
5534 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
5535 | A near full screen is `next-screen-context-lines' less than a full screen. | |
5536 | The next window is the one below the current one; or the one at the top | |
5537 | if the current one is at the bottom. Negative ARG means scroll downward. | |
5538 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5539 | When calling from a program, supply as argument a number, nil, or `-'. | |
5540 | ||
fdb82f93 | 5541 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5542 | showing that buffer, popping the buffer up if necessary. |
5543 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5544 | specifies the window to scroll. This takes precedence over | |
5545 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5546 | (arg) |
d4e7cf01 | 5547 | Lisp_Object arg; |
ccd0664b | 5548 | { |
d4e7cf01 GM |
5549 | Lisp_Object window; |
5550 | struct window *w; | |
331379bf | 5551 | int count = SPECPDL_INDEX (); |
ccd0664b RS |
5552 | |
5553 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5554 | w = XWINDOW (window); |
7ab12479 JB |
5555 | |
5556 | /* Don't screw up if window_scroll gets an error. */ | |
5557 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5558 | ++windows_or_buffers_changed; |
7ab12479 JB |
5559 | |
5560 | Fset_buffer (w->buffer); | |
5561 | SET_PT (marker_position (w->pointm)); | |
5562 | ||
413430c5 | 5563 | if (NILP (arg)) |
d4e7cf01 | 5564 | window_scroll (window, 1, 1, 1); |
413430c5 | 5565 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5566 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5567 | else |
5568 | { | |
413430c5 EN |
5569 | if (CONSP (arg)) |
5570 | arg = Fcar (arg); | |
b7826503 | 5571 | CHECK_NUMBER (arg); |
101d1605 | 5572 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5573 | } |
5574 | ||
b73ea88e | 5575 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5576 | unbind_to (count, Qnil); |
7ab12479 JB |
5577 | |
5578 | return Qnil; | |
5579 | } | |
5580 | \f | |
dc297565 | 5581 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "P\np", |
fdb82f93 | 5582 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5583 | Default for ARG is window width minus 2. |
5584 | Value is the total amount of leftward horizontal scrolling in | |
5585 | effect after the change. | |
dc297565 RS |
5586 | If SET_MINIMUM is non-nil, the new scroll amount becomes the |
5587 | lower bound for automatic scrolling, i.e. automatic scrolling | |
2fe41216 | 5588 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5589 | by this function. This happens in an interactive call. */) |
5590 | (arg, set_minimum) | |
5591 | register Lisp_Object arg, set_minimum; | |
7ab12479 | 5592 | { |
c67fa410 GM |
5593 | Lisp_Object result; |
5594 | int hscroll; | |
5595 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5596 | |
265a9e55 | 5597 | if (NILP (arg)) |
949cf20f | 5598 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5599 | else |
5600 | arg = Fprefix_numeric_value (arg); | |
5601 | ||
c67fa410 GM |
5602 | hscroll = XINT (w->hscroll) + XINT (arg); |
5603 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
5604 | ||
dc297565 | 5605 | if (!NILP (set_minimum)) |
c67fa410 GM |
5606 | w->min_hscroll = w->hscroll; |
5607 | ||
5608 | return result; | |
7ab12479 JB |
5609 | } |
5610 | ||
dc297565 | 5611 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "P\np", |
fdb82f93 | 5612 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5613 | Default for ARG is window width minus 2. |
5614 | Value is the total amount of leftward horizontal scrolling in | |
5615 | effect after the change. | |
dc297565 RS |
5616 | If SET_MINIMUM is non-nil, the new scroll amount becomes the |
5617 | lower bound for automatic scrolling, i.e. automatic scrolling | |
2fe41216 | 5618 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5619 | by this function. This happens in an interactive call. */) |
5620 | (arg, set_minimum) | |
a93563fd | 5621 | register Lisp_Object arg, set_minimum; |
7ab12479 | 5622 | { |
c67fa410 GM |
5623 | Lisp_Object result; |
5624 | int hscroll; | |
5625 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5626 | |
265a9e55 | 5627 | if (NILP (arg)) |
949cf20f | 5628 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5629 | else |
5630 | arg = Fprefix_numeric_value (arg); | |
5631 | ||
c67fa410 GM |
5632 | hscroll = XINT (w->hscroll) - XINT (arg); |
5633 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
177c0ea7 | 5634 | |
dc297565 | 5635 | if (!NILP (set_minimum)) |
c67fa410 GM |
5636 | w->min_hscroll = w->hscroll; |
5637 | ||
5638 | return result; | |
7ab12479 JB |
5639 | } |
5640 | ||
fa832261 KS |
5641 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5642 | doc: /* Return the window which was selected when entering the minibuffer. | |
5643 | Returns nil, if current window is not a minibuffer window. */) | |
5644 | () | |
5645 | { | |
5646 | if (minibuf_level > 0 | |
5647 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5648 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5649 | return minibuf_selected_window; | |
5650 | ||
5651 | return Qnil; | |
5652 | } | |
5653 | ||
12c8b416 GM |
5654 | /* Value is the number of lines actually displayed in window W, |
5655 | as opposed to its height. */ | |
5656 | ||
5657 | static int | |
5658 | displayed_window_lines (w) | |
5659 | struct window *w; | |
5660 | { | |
5661 | struct it it; | |
5662 | struct text_pos start; | |
5663 | int height = window_box_height (w); | |
5664 | struct buffer *old_buffer; | |
5665 | int bottom_y; | |
5666 | ||
5667 | if (XBUFFER (w->buffer) != current_buffer) | |
5668 | { | |
5669 | old_buffer = current_buffer; | |
5670 | set_buffer_internal (XBUFFER (w->buffer)); | |
5671 | } | |
5672 | else | |
5673 | old_buffer = NULL; | |
5674 | ||
521b203e GM |
5675 | /* In case W->start is out of the accessible range, do something |
5676 | reasonable. This happens in Info mode when Info-scroll-down | |
5677 | calls (recenter -1) while W->start is 1. */ | |
5678 | if (XMARKER (w->start)->charpos < BEGV) | |
5679 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
5680 | else if (XMARKER (w->start)->charpos > ZV) | |
5681 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
5682 | else | |
5683 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5684 | ||
12c8b416 GM |
5685 | start_display (&it, w, start); |
5686 | move_it_vertically (&it, height); | |
c8bc6f65 | 5687 | bottom_y = line_bottom_y (&it); |
12c8b416 | 5688 | |
1de65f51 RS |
5689 | /* rms: On a non-window display, |
5690 | the value of it.vpos at the bottom of the screen | |
5691 | seems to be 1 larger than window_box_height (w). | |
5692 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5693 | when ZV is on the last screen line | |
5694 | moves to the previous screen line instead of the last one. */ | |
5695 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) | |
5696 | height++; | |
5697 | ||
12c8b416 GM |
5698 | /* Add in empty lines at the bottom of the window. */ |
5699 | if (bottom_y < height) | |
5700 | { | |
949cf20f | 5701 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5702 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5703 | } |
5704 | ||
c8bc6f65 GM |
5705 | if (old_buffer) |
5706 | set_buffer_internal (old_buffer); | |
5707 | ||
12c8b416 GM |
5708 | return it.vpos; |
5709 | } | |
5710 | ||
5711 | ||
7ab12479 | 5712 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
fdb82f93 PJ |
5713 | doc: /* Center point in window and redisplay frame. |
5714 | With prefix argument ARG, recenter putting point on screen line ARG | |
5715 | relative to the current window. If ARG is negative, it counts up from the | |
5716 | bottom of the window. (ARG should be less than the height of the window.) | |
5717 | ||
7d1d98ee KS |
5718 | If ARG is omitted or nil, erase the entire frame and then redraw with point |
5719 | in the center of the current window. If `auto-resize-tool-bars' is set to | |
5720 | `grow-only', this resets the tool-bar's height to the minimum height needed. | |
5721 | ||
fdb82f93 PJ |
5722 | Just C-u as prefix means put point in the center of the window |
5723 | and redisplay normally--don't erase and redraw the frame. */) | |
5724 | (arg) | |
413430c5 | 5725 | register Lisp_Object arg; |
7ab12479 | 5726 | { |
6df47b59 | 5727 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
5728 | struct buffer *buf = XBUFFER (w->buffer); |
5729 | struct buffer *obuf = current_buffer; | |
6df47b59 GM |
5730 | int center_p = 0; |
5731 | int charpos, bytepos; | |
f6b43440 RS |
5732 | int iarg; |
5733 | int this_scroll_margin; | |
7ab12479 | 5734 | |
0fa5d25b RS |
5735 | /* If redisplay is suppressed due to an error, try again. */ |
5736 | obuf->display_error_modiff = 0; | |
5737 | ||
413430c5 | 5738 | if (NILP (arg)) |
7ab12479 | 5739 | { |
f02d6d5c KH |
5740 | int i; |
5741 | ||
5742 | /* Invalidate pixel data calculated for all compositions. */ | |
5743 | for (i = 0; i < n_compositions; i++) | |
5744 | composition_table[i]->font = NULL; | |
7ab12479 | 5745 | |
7d1d98ee KS |
5746 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5747 | ||
5748 | Fredraw_frame (WINDOW_FRAME (w)); | |
5749 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
6df47b59 | 5750 | center_p = 1; |
7ab12479 | 5751 | } |
413430c5 | 5752 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5753 | center_p = 1; |
7ab12479 JB |
5754 | else |
5755 | { | |
413430c5 | 5756 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5757 | CHECK_NUMBER (arg); |
ae12ecd7 | 5758 | iarg = XINT (arg); |
7ab12479 JB |
5759 | } |
5760 | ||
478292ed | 5761 | set_buffer_internal (buf); |
7ab12479 | 5762 | |
f6b43440 RS |
5763 | /* Do this after making BUF current |
5764 | in case scroll_margin is buffer-local. */ | |
5765 | this_scroll_margin = max (0, scroll_margin); | |
5766 | this_scroll_margin = min (this_scroll_margin, | |
5767 | XFASTINT (w->total_lines) / 4); | |
5768 | ||
521b203e | 5769 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5770 | have variable-height lines and centering point on the basis of |
5771 | line counts would lead to strange effects. */ | |
521b203e | 5772 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5773 | { |
6df47b59 GM |
5774 | if (center_p) |
5775 | { | |
521b203e GM |
5776 | struct it it; |
5777 | struct text_pos pt; | |
177c0ea7 | 5778 | |
521b203e GM |
5779 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5780 | start_display (&it, w, pt); | |
f204989e | 5781 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5782 | charpos = IT_CHARPOS (it); |
5783 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5784 | } |
f6b43440 | 5785 | else if (iarg < 0) |
6df47b59 | 5786 | { |
521b203e GM |
5787 | struct it it; |
5788 | struct text_pos pt; | |
f6b43440 | 5789 | int nlines = -iarg; |
f204989e KS |
5790 | int extra_line_spacing; |
5791 | int h = window_box_height (w); | |
177c0ea7 | 5792 | |
f6b43440 RS |
5793 | iarg = - max (-iarg, this_scroll_margin); |
5794 | ||
521b203e GM |
5795 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5796 | start_display (&it, w, pt); | |
f204989e KS |
5797 | |
5798 | /* Be sure we have the exact height of the full line containing PT. */ | |
5799 | move_it_by_lines (&it, 0, 1); | |
521b203e | 5800 | |
d466fa4d | 5801 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5802 | height minus what's displayed in the line containing PT, |
5803 | and the lines below. */ | |
f204989e KS |
5804 | it.current_y = 0; |
5805 | it.vpos = 0; | |
d466fa4d GM |
5806 | move_it_by_lines (&it, nlines, 1); |
5807 | ||
f204989e KS |
5808 | if (it.vpos == nlines) |
5809 | h -= it.current_y; | |
5810 | else | |
5811 | { | |
5812 | /* Last line has no newline */ | |
5813 | h -= line_bottom_y (&it); | |
5814 | it.vpos++; | |
5815 | } | |
5816 | ||
5817 | /* Don't reserve space for extra line spacing of last line. */ | |
5818 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5819 | |
5820 | /* If we can't move down NLINES lines because we hit | |
5821 | the end of the buffer, count in some empty lines. */ | |
5822 | if (it.vpos < nlines) | |
f204989e KS |
5823 | { |
5824 | nlines -= it.vpos; | |
5825 | extra_line_spacing = it.extra_line_spacing; | |
5826 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5827 | } | |
5828 | if (h <= 0) | |
5829 | return Qnil; | |
201c831a | 5830 | |
f204989e | 5831 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5832 | start_display (&it, w, pt); |
f204989e KS |
5833 | it.current_y = 0; |
5834 | move_it_vertically_backward (&it, h); | |
5835 | ||
5836 | /* If extra line spacing is present, we may move too far | |
5837 | back. This causes the last line to be only partially | |
5838 | visible (which triggers redisplay to recenter that line | |
5839 | in the middle), so move forward. | |
5840 | But ignore extra line spacing on last line, as it is not | |
5841 | considered to be part of the visible height of the line. | |
5842 | */ | |
5843 | h += extra_line_spacing; | |
5844 | while (-it.current_y > h) | |
5845 | move_it_by_lines (&it, 1, 1); | |
5846 | ||
521b203e GM |
5847 | charpos = IT_CHARPOS (it); |
5848 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5849 | } |
521b203e GM |
5850 | else |
5851 | { | |
5852 | struct position pos; | |
f6b43440 | 5853 | |
f6b43440 RS |
5854 | iarg = max (iarg, this_scroll_margin); |
5855 | ||
5856 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5857 | charpos = pos.bufpos; |
5858 | bytepos = pos.bytepos; | |
5859 | } | |
5860 | } | |
5861 | else | |
5862 | { | |
5863 | struct position pos; | |
5864 | int ht = window_internal_height (w); | |
5865 | ||
5866 | if (center_p) | |
a4429c5b | 5867 | iarg = ht / 2; |
f567c488 KS |
5868 | else if (iarg < 0) |
5869 | iarg += ht; | |
f6b43440 RS |
5870 | |
5871 | /* Don't let it get into the margin at either top or bottom. */ | |
5872 | iarg = max (iarg, this_scroll_margin); | |
5873 | iarg = min (iarg, ht - this_scroll_margin - 1); | |
177c0ea7 | 5874 | |
f6b43440 | 5875 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
5876 | charpos = pos.bufpos; |
5877 | bytepos = pos.bytepos; | |
5878 | } | |
5879 | ||
5880 | /* Set the new window start. */ | |
5881 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 5882 | w->window_end_valid = Qnil; |
177c0ea7 | 5883 | |
95605b1b RS |
5884 | w->optional_new_start = Qt; |
5885 | ||
6df47b59 GM |
5886 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
5887 | w->start_at_line_beg = Qt; | |
5888 | else | |
5889 | w->start_at_line_beg = Qnil; | |
177c0ea7 | 5890 | |
478292ed | 5891 | set_buffer_internal (obuf); |
7ab12479 JB |
5892 | return Qnil; |
5893 | } | |
b7617575 GM |
5894 | |
5895 | ||
81fe0836 | 5896 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5897 | 0, 1, 0, |
5898 | doc: /* Return the height in lines of the text display area of WINDOW. | |
5899 | This doesn't include the mode-line (or header-line if any) or any | |
5900 | partial-height lines in the text display area. */) | |
5901 | (window) | |
81fe0836 MB |
5902 | Lisp_Object window; |
5903 | { | |
5904 | struct window *w = decode_window (window); | |
5905 | int pixel_height = window_box_height (w); | |
949cf20f | 5906 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5907 | return make_number (line_height); |
5908 | } | |
5909 | ||
5910 | ||
7ab12479 JB |
5911 | \f |
5912 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5913 | 1, 1, "P", |
5914 | doc: /* Position point relative to window. | |
5915 | With no argument, position point at center of window. | |
5916 | An argument specifies vertical position within the window; | |
5917 | zero means top of window, negative means relative to bottom of window. */) | |
5918 | (arg) | |
b7617575 | 5919 | Lisp_Object arg; |
7ab12479 | 5920 | { |
b7617575 GM |
5921 | struct window *w = XWINDOW (selected_window); |
5922 | int lines, start; | |
540b6aa0 | 5923 | Lisp_Object window; |
f6b43440 RS |
5924 | #if 0 |
5925 | int this_scroll_margin; | |
5926 | #endif | |
7ab12479 | 5927 | |
b7617575 | 5928 | window = selected_window; |
7ab12479 JB |
5929 | start = marker_position (w->start); |
5930 | if (start < BEGV || start > ZV) | |
5931 | { | |
b7617575 | 5932 | int height = window_internal_height (w); |
cd2be1dd | 5933 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 5934 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
5935 | w->start_at_line_beg = Fbolp (); |
5936 | w->force_start = Qt; | |
5937 | } | |
5938 | else | |
b73ea88e | 5939 | Fgoto_char (w->start); |
7ab12479 | 5940 | |
b7617575 | 5941 | lines = displayed_window_lines (w); |
f6b43440 RS |
5942 | |
5943 | #if 0 | |
5944 | this_scroll_margin = max (0, scroll_margin); | |
5945 | this_scroll_margin = min (this_scroll_margin, lines / 4); | |
5946 | #endif | |
5947 | ||
b7617575 GM |
5948 | if (NILP (arg)) |
5949 | XSETFASTINT (arg, lines / 2); | |
5950 | else | |
5951 | { | |
f6b43440 RS |
5952 | int iarg = XINT (Fprefix_numeric_value (arg)); |
5953 | ||
5954 | if (iarg < 0) | |
5955 | iarg = iarg + lines; | |
5956 | ||
5957 | #if 0 /* This code would prevent move-to-window-line from moving point | |
5958 | to a place inside the scroll margins (which would cause the | |
5959 | next redisplay to scroll). I wrote this code, but then concluded | |
5960 | it is probably better not to install it. However, it is here | |
5961 | inside #if 0 so as not to lose it. -- rms. */ | |
5962 | ||
5963 | /* Don't let it get into the margin at either top or bottom. */ | |
5964 | iarg = max (iarg, this_scroll_margin); | |
5965 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
5966 | #endif | |
5967 | ||
5968 | arg = make_number (iarg); | |
b7617575 GM |
5969 | } |
5970 | ||
c8bc6f65 | 5971 | /* Skip past a partially visible first line. */ |
163784df | 5972 | if (w->vscroll) |
163784df MB |
5973 | XSETINT (arg, XINT (arg) + 1); |
5974 | ||
540b6aa0 | 5975 | return Fvertical_motion (arg, window); |
7ab12479 | 5976 | } |
5500c422 GM |
5977 | |
5978 | ||
7ab12479 | 5979 | \f |
5500c422 GM |
5980 | /*********************************************************************** |
5981 | Window Configuration | |
5982 | ***********************************************************************/ | |
5983 | ||
7ab12479 JB |
5984 | struct save_window_data |
5985 | { | |
f5ccc0cc | 5986 | EMACS_INT size_from_Lisp_Vector_struct; |
7ab12479 | 5987 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
949cf20f | 5988 | Lisp_Object frame_cols, frame_lines, frame_menu_bar_lines; |
9ea173e8 | 5989 | Lisp_Object frame_tool_bar_lines; |
bdc727bf | 5990 | Lisp_Object selected_frame; |
7ab12479 JB |
5991 | Lisp_Object current_window; |
5992 | Lisp_Object current_buffer; | |
5993 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 5994 | Lisp_Object minibuf_selected_window; |
7ab12479 | 5995 | Lisp_Object root_window; |
bdc727bf | 5996 | Lisp_Object focus_frame; |
756b6edc RS |
5997 | /* Record the values of window-min-width and window-min-height |
5998 | so that window sizes remain consistent with them. */ | |
5999 | Lisp_Object min_width, min_height; | |
cbff28e8 RS |
6000 | /* A vector, each of whose elements is a struct saved_window |
6001 | for one window. */ | |
7ab12479 JB |
6002 | Lisp_Object saved_windows; |
6003 | }; | |
ff06df24 | 6004 | |
cbff28e8 | 6005 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 6006 | struct saved_window |
ea68264b GM |
6007 | { |
6008 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
6009 | EMACS_INT size_from_Lisp_Vector_struct; | |
6010 | struct Lisp_Vector *next_from_Lisp_Vector_struct; | |
7ab12479 | 6011 | |
ea68264b GM |
6012 | Lisp_Object window; |
6013 | Lisp_Object buffer, start, pointm, mark; | |
949cf20f KS |
6014 | Lisp_Object left_col, top_line, total_cols, total_lines; |
6015 | Lisp_Object hscroll, min_hscroll; | |
ea68264b GM |
6016 | Lisp_Object parent, prev; |
6017 | Lisp_Object start_at_line_beg; | |
6018 | Lisp_Object display_table; | |
949cf20f KS |
6019 | Lisp_Object orig_top_line, orig_total_lines; |
6020 | Lisp_Object left_margin_cols, right_margin_cols; | |
6021 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
6022 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type; | |
6ad0381c | 6023 | Lisp_Object dedicated; |
ea68264b GM |
6024 | }; |
6025 | ||
7ab12479 JB |
6026 | #define SAVED_WINDOW_N(swv,n) \ |
6027 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
6028 | ||
6029 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 PJ |
6030 | doc: /* Return t if OBJECT is a window-configuration object. */) |
6031 | (object) | |
413430c5 | 6032 | Lisp_Object object; |
7ab12479 | 6033 | { |
6ad0381c | 6034 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
6035 | } |
6036 | ||
3f8ab7bd | 6037 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 PJ |
6038 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
6039 | (config) | |
3f8ab7bd RS |
6040 | Lisp_Object config; |
6041 | { | |
6042 | register struct save_window_data *data; | |
6043 | struct Lisp_Vector *saved_windows; | |
6044 | ||
663fbbba | 6045 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
6046 | |
6047 | data = (struct save_window_data *) XVECTOR (config); | |
6048 | saved_windows = XVECTOR (data->saved_windows); | |
6049 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
6050 | } | |
6051 | ||
d5b2799e | 6052 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
6053 | Sset_window_configuration, 1, 1, 0, |
6054 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
6055 | CONFIGURATION must be a value previously returned | |
6056 | by `current-window-configuration' (which see). | |
6057 | If CONFIGURATION was made from a frame that is now deleted, | |
6058 | only frame-independent values can be restored. In this case, | |
6059 | the return value is nil. Otherwise the value is t. */) | |
6060 | (configuration) | |
2f83aebe | 6061 | Lisp_Object configuration; |
7ab12479 | 6062 | { |
7ab12479 JB |
6063 | register struct save_window_data *data; |
6064 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 6065 | Lisp_Object new_current_buffer; |
fd482be5 | 6066 | Lisp_Object frame; |
44fa5b1e | 6067 | FRAME_PTR f; |
72695e47 | 6068 | int old_point = -1; |
7ab12479 | 6069 | |
663fbbba | 6070 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 6071 | |
2f83aebe | 6072 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
6073 | saved_windows = XVECTOR (data->saved_windows); |
6074 | ||
7ab12479 | 6075 | new_current_buffer = data->current_buffer; |
265a9e55 | 6076 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 6077 | new_current_buffer = Qnil; |
72695e47 | 6078 | else |
73cadfc1 DK |
6079 | { |
6080 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
6081 | /* The code further down "preserves point" by saving here PT in |
6082 | old_point and then setting it later back into PT. When the | |
6083 | current-selected-window and the final-selected-window both show | |
6084 | the current buffer, this suffers from the problem that the | |
6085 | current PT is the window-point of the current-selected-window, | |
6086 | while the final PT is the point of the final-selected-window, so | |
6087 | this copy from one PT to the other would end up moving the | |
6088 | window-point of the final-selected-window to the window-point of | |
6089 | the current-selected-window. So we have to be careful which | |
6090 | point of the current-buffer we copy into old_point. */ | |
6091 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
6092 | && WINDOWP (selected_window) | |
6093 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) | |
6094 | && !EQ (selected_window, data->current_window)) | |
6095 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
6096 | else | |
6097 | old_point = PT; | |
73cadfc1 | 6098 | else |
203eb0aa SM |
6099 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
6100 | point in new_current_buffer as of the last time this buffer was | |
6101 | used. This can be non-deterministic since it can be changed by | |
6102 | things like jit-lock by mere temporary selection of some random | |
6103 | window that happens to show this buffer. | |
6104 | So if possible we want this arbitrary choice of "which point" to | |
6105 | be the one from the to-be-selected-window so as to prevent this | |
6106 | window's cursor from being copied from another window. */ | |
6107 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
6108 | /* If current_window = selected_window, its point is in BUF_PT. */ | |
6109 | && !EQ (selected_window, data->current_window)) | |
6110 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
6111 | else | |
6112 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 6113 | } |
7ab12479 | 6114 | |
fd482be5 JB |
6115 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
6116 | f = XFRAME (frame); | |
177c0ea7 | 6117 | |
fd482be5 JB |
6118 | /* If f is a dead frame, don't bother rebuilding its window tree. |
6119 | However, there is other stuff we should still try to do below. */ | |
6120 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 6121 | { |
fd482be5 JB |
6122 | register struct window *w; |
6123 | register struct saved_window *p; | |
5500c422 GM |
6124 | struct window *root_window; |
6125 | struct window **leaf_windows; | |
6126 | int n_leaf_windows; | |
c4280705 | 6127 | int k, i, n; |
fd482be5 JB |
6128 | |
6129 | /* If the frame has been resized since this window configuration was | |
6130 | made, we change the frame to the size specified in the | |
6131 | configuration, restore the configuration, and then resize it | |
6132 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
6133 | int previous_frame_lines = FRAME_LINES (f); |
6134 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 6135 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 6136 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 6137 | |
d2b35234 RS |
6138 | /* The mouse highlighting code could get screwed up |
6139 | if it runs during this. */ | |
6140 | BLOCK_INPUT; | |
6141 | ||
949cf20f KS |
6142 | if (XFASTINT (data->frame_lines) != previous_frame_lines |
6143 | || XFASTINT (data->frame_cols) != previous_frame_cols) | |
6144 | change_frame_size (f, XFASTINT (data->frame_lines), | |
6145 | XFASTINT (data->frame_cols), 0, 0, 0); | |
e3678b64 | 6146 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 KH |
6147 | if (XFASTINT (data->frame_menu_bar_lines) |
6148 | != previous_frame_menu_bar_lines) | |
f8ad443a | 6149 | x_set_menu_bar_lines (f, data->frame_menu_bar_lines, make_number (0)); |
4314246f | 6150 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
6151 | if (XFASTINT (data->frame_tool_bar_lines) |
6152 | != previous_frame_tool_bar_lines) | |
6153 | x_set_tool_bar_lines (f, data->frame_tool_bar_lines, make_number (0)); | |
4314246f | 6154 | #endif |
217f2871 | 6155 | #endif |
fd482be5 | 6156 | |
a46c0153 RS |
6157 | /* "Swap out" point from the selected window's buffer |
6158 | into the window itself. (Normally the pointm of the selected | |
6159 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
6160 | restoring the window contents, and prevent it from |
6161 | being done later on when we select a new window. */ | |
596ae0cf RS |
6162 | if (! NILP (XWINDOW (selected_window)->buffer)) |
6163 | { | |
6164 | w = XWINDOW (selected_window); | |
6165 | set_marker_both (w->pointm, | |
6166 | w->buffer, | |
6167 | BUF_PT (XBUFFER (w->buffer)), | |
6168 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
6169 | } | |
6170 | ||
fd482be5 | 6171 | windows_or_buffers_changed++; |
29aeee73 | 6172 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 6173 | |
5500c422 | 6174 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 6175 | is a serious redisplay flickering problem. What we would |
5500c422 GM |
6176 | really like to do is to free only those matrices not reused |
6177 | below. */ | |
6178 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
6179 | leaf_windows | |
6180 | = (struct window **) alloca (count_windows (root_window) | |
6181 | * sizeof (struct window *)); | |
6182 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
6183 | ||
756b6edc RS |
6184 | /* Temporarily avoid any problems with windows that are smaller |
6185 | than they are supposed to be. */ | |
6186 | window_min_height = 1; | |
6187 | window_min_width = 1; | |
6188 | ||
fd482be5 JB |
6189 | /* Kludge Alert! |
6190 | Mark all windows now on frame as "deleted". | |
6191 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 6192 | |
fd482be5 JB |
6193 | Save their current buffers in their height fields, since we may |
6194 | need it later, if a buffer saved in the configuration is now | |
6195 | dead. */ | |
6196 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
6197 | ||
6198 | for (k = 0; k < saved_windows->size; k++) | |
6199 | { | |
6200 | p = SAVED_WINDOW_N (saved_windows, k); | |
6201 | w = XWINDOW (p->window); | |
6202 | w->next = Qnil; | |
7ab12479 | 6203 | |
fd482be5 JB |
6204 | if (!NILP (p->parent)) |
6205 | w->parent = SAVED_WINDOW_N (saved_windows, | |
6206 | XFASTINT (p->parent))->window; | |
6207 | else | |
6208 | w->parent = Qnil; | |
7ab12479 | 6209 | |
fd482be5 | 6210 | if (!NILP (p->prev)) |
7ab12479 | 6211 | { |
fd482be5 JB |
6212 | w->prev = SAVED_WINDOW_N (saved_windows, |
6213 | XFASTINT (p->prev))->window; | |
6214 | XWINDOW (w->prev)->next = p->window; | |
6215 | } | |
6216 | else | |
6217 | { | |
6218 | w->prev = Qnil; | |
6219 | if (!NILP (w->parent)) | |
6220 | { | |
949cf20f | 6221 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 JB |
6222 | { |
6223 | XWINDOW (w->parent)->vchild = p->window; | |
6224 | XWINDOW (w->parent)->hchild = Qnil; | |
6225 | } | |
6226 | else | |
6227 | { | |
6228 | XWINDOW (w->parent)->hchild = p->window; | |
6229 | XWINDOW (w->parent)->vchild = Qnil; | |
6230 | } | |
6231 | } | |
6232 | } | |
6233 | ||
6234 | /* If we squirreled away the buffer in the window's height, | |
6235 | restore it now. */ | |
949cf20f KS |
6236 | if (BUFFERP (w->total_lines)) |
6237 | w->buffer = w->total_lines; | |
6238 | w->left_col = p->left_col; | |
6239 | w->top_line = p->top_line; | |
6240 | w->total_cols = p->total_cols; | |
6241 | w->total_lines = p->total_lines; | |
fd482be5 | 6242 | w->hscroll = p->hscroll; |
ea68264b | 6243 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 6244 | w->display_table = p->display_table; |
949cf20f KS |
6245 | w->orig_top_line = p->orig_top_line; |
6246 | w->orig_total_lines = p->orig_total_lines; | |
6247 | w->left_margin_cols = p->left_margin_cols; | |
6248 | w->right_margin_cols = p->right_margin_cols; | |
6249 | w->left_fringe_width = p->left_fringe_width; | |
6250 | w->right_fringe_width = p->right_fringe_width; | |
6251 | w->fringes_outside_margins = p->fringes_outside_margins; | |
6252 | w->scroll_bar_width = p->scroll_bar_width; | |
6253 | w->vertical_scroll_bar_type = p->vertical_scroll_bar_type; | |
6ad0381c | 6254 | w->dedicated = p->dedicated; |
d834a2e9 | 6255 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 6256 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
6257 | |
6258 | /* Reinstall the saved buffer and pointers into it. */ | |
6259 | if (NILP (p->buffer)) | |
6260 | w->buffer = p->buffer; | |
6261 | else | |
6262 | { | |
6263 | if (!NILP (XBUFFER (p->buffer)->name)) | |
6264 | /* If saved buffer is alive, install it. */ | |
6265 | { | |
6266 | w->buffer = p->buffer; | |
6267 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
6268 | set_marker_restricted (w->start, p->start, w->buffer); |
6269 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 6270 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 6271 | p->mark, w->buffer); |
fd482be5 JB |
6272 | |
6273 | /* As documented in Fcurrent_window_configuration, don't | |
243a5ce6 RS |
6274 | restore the location of point in the buffer which was |
6275 | current when the window configuration was recorded. */ | |
6b54027b RS |
6276 | if (!EQ (p->buffer, new_current_buffer) |
6277 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
6278 | Fgoto_char (w->pointm); |
6279 | } | |
52a68e98 RS |
6280 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
6281 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 6282 | { |
fd482be5 JB |
6283 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
6284 | /* This will set the markers to beginning of visible | |
6285 | range. */ | |
6286 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
6287 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
6288 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
6289 | } |
6290 | else | |
fd482be5 | 6291 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 6292 | are real. */ |
7ab12479 | 6293 | { |
fd482be5 JB |
6294 | /* Set window markers at start of visible range. */ |
6295 | if (XMARKER (w->start)->buffer == 0) | |
6296 | set_marker_restricted (w->start, make_number (0), | |
6297 | w->buffer); | |
6298 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
6299 | set_marker_restricted_both (w->pointm, w->buffer, |
6300 | BUF_PT (XBUFFER (w->buffer)), | |
6301 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 6302 | w->start_at_line_beg = Qt; |
7ab12479 JB |
6303 | } |
6304 | } | |
6305 | } | |
9ace597f | 6306 | |
fd482be5 | 6307 | FRAME_ROOT_WINDOW (f) = data->root_window; |
719eaeb1 GM |
6308 | /* Prevent "swapping out point" in the old selected window |
6309 | using the buffer that has been restored into it. | |
a46c0153 | 6310 | We already swapped out point that from that window's old buffer. */ |
719eaeb1 | 6311 | selected_window = Qnil; |
a46c0153 RS |
6312 | |
6313 | /* Arrange *not* to restore point in the buffer that was | |
6314 | current when the window configuration was saved. */ | |
243a5ce6 RS |
6315 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
6316 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 6317 | make_number (old_point), |
243a5ce6 | 6318 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 6319 | |
14d87dc9 | 6320 | Fselect_window (data->current_window, Qnil); |
396a830c RS |
6321 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
6322 | = selected_window; | |
7ab12479 | 6323 | |
db269683 | 6324 | if (NILP (data->focus_frame) |
017b2bad | 6325 | || (FRAMEP (data->focus_frame) |
db269683 JB |
6326 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
6327 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 6328 | |
fd482be5 JB |
6329 | #if 0 /* I don't understand why this is needed, and it causes problems |
6330 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 6331 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 | 6332 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
d12f6f83 | 6333 | 0, 0); |
fd482be5 JB |
6334 | #endif |
6335 | ||
6336 | /* Set the screen height to the value it had before this function. */ | |
949cf20f KS |
6337 | if (previous_frame_lines != FRAME_LINES (f) |
6338 | || previous_frame_cols != FRAME_COLS (f)) | |
6339 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 6340 | 0, 0, 0); |
e3678b64 | 6341 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 6342 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
6343 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
6344 | make_number (0)); | |
4314246f | 6345 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
6346 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
6347 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
6348 | make_number (0)); | |
4314246f | 6349 | #endif |
217f2871 | 6350 | #endif |
d2b35234 | 6351 | |
5500c422 | 6352 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
6353 | for (i = n = 0; i < n_leaf_windows; ++i) |
6354 | { | |
6355 | if (NILP (leaf_windows[i]->buffer)) | |
6356 | { | |
6357 | /* Assert it's not reused as a combination. */ | |
177c0ea7 | 6358 | xassert (NILP (leaf_windows[i]->hchild) |
c4280705 GM |
6359 | && NILP (leaf_windows[i]->vchild)); |
6360 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
6361 | } |
6362 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
6363 | ++n; | |
6364 | } | |
177c0ea7 | 6365 | |
5500c422 GM |
6366 | adjust_glyphs (f); |
6367 | ||
d2b35234 | 6368 | UNBLOCK_INPUT; |
756b6edc | 6369 | |
478292ed RS |
6370 | /* Fselect_window will have made f the selected frame, so we |
6371 | reselect the proper frame here. Fhandle_switch_frame will change the | |
6372 | selected window too, but that doesn't make the call to | |
6373 | Fselect_window above totally superfluous; it still sets f's | |
6374 | selected window. */ | |
6375 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
d12f6f83 | 6376 | do_switch_frame (data->selected_frame, 0, 0); |
478292ed RS |
6377 | |
6378 | if (! NILP (Vwindow_configuration_change_hook) | |
6379 | && ! NILP (Vrun_hooks)) | |
6380 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
6381 | } | |
bdc727bf JB |
6382 | |
6383 | if (!NILP (new_current_buffer)) | |
243a5ce6 | 6384 | Fset_buffer (new_current_buffer); |
bdc727bf | 6385 | |
478292ed RS |
6386 | /* Restore the minimum heights recorded in the configuration. */ |
6387 | window_min_height = XINT (data->min_height); | |
6388 | window_min_width = XINT (data->min_width); | |
543f5fb1 | 6389 | |
478292ed | 6390 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 6391 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 6392 | |
3f8ab7bd | 6393 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
6394 | } |
6395 | ||
44fa5b1e | 6396 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
6397 | by setting their buffers to nil. */ |
6398 | ||
fd482be5 | 6399 | void |
7ab12479 JB |
6400 | delete_all_subwindows (w) |
6401 | register struct window *w; | |
6402 | { | |
265a9e55 | 6403 | if (!NILP (w->next)) |
7ab12479 | 6404 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 6405 | if (!NILP (w->vchild)) |
7ab12479 | 6406 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 6407 | if (!NILP (w->hchild)) |
7ab12479 | 6408 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af | 6409 | |
949cf20f | 6410 | w->total_lines = w->buffer; /* See Fset_window_configuration for excuse. */ |
605be8af | 6411 | |
86e48436 RS |
6412 | if (!NILP (w->buffer)) |
6413 | unshow_buffer (w); | |
6414 | ||
605be8af JB |
6415 | /* We set all three of these fields to nil, to make sure that we can |
6416 | distinguish this dead window from any live window. Live leaf | |
6417 | windows will have buffer set, and combination windows will have | |
6418 | vchild or hchild set. */ | |
6419 | w->buffer = Qnil; | |
6420 | w->vchild = Qnil; | |
6421 | w->hchild = Qnil; | |
acf70840 GM |
6422 | |
6423 | Vwindow_list = Qnil; | |
7ab12479 JB |
6424 | } |
6425 | \f | |
6426 | static int | |
6427 | count_windows (window) | |
6428 | register struct window *window; | |
6429 | { | |
6430 | register int count = 1; | |
265a9e55 | 6431 | if (!NILP (window->next)) |
7ab12479 | 6432 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 6433 | if (!NILP (window->vchild)) |
7ab12479 | 6434 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 6435 | if (!NILP (window->hchild)) |
7ab12479 JB |
6436 | count += count_windows (XWINDOW (window->hchild)); |
6437 | return count; | |
6438 | } | |
6439 | ||
5500c422 | 6440 | |
177c0ea7 | 6441 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 GM |
6442 | Value is last index + 1. */ |
6443 | ||
6444 | static int | |
6445 | get_leaf_windows (w, flat, i) | |
6446 | struct window *w; | |
6447 | struct window **flat; | |
6448 | int i; | |
6449 | { | |
6450 | while (w) | |
6451 | { | |
6452 | if (!NILP (w->hchild)) | |
6453 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
6454 | else if (!NILP (w->vchild)) | |
6455 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 6456 | else |
5500c422 GM |
6457 | flat[i++] = w; |
6458 | ||
6459 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6460 | } | |
6461 | ||
6462 | return i; | |
6463 | } | |
6464 | ||
6465 | ||
6466 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
6467 | null if W's current matrix is invalid, so that no meaningfull glyph | |
6468 | can be returned. */ | |
6469 | ||
6470 | struct glyph * | |
6471 | get_phys_cursor_glyph (w) | |
6472 | struct window *w; | |
6473 | { | |
6474 | struct glyph_row *row; | |
6475 | struct glyph *glyph; | |
6476 | ||
6477 | if (w->phys_cursor.vpos >= 0 | |
6478 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
6479 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
6480 | row->enabled_p) | |
6481 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
6482 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
6483 | else | |
6484 | glyph = NULL; | |
6485 | ||
6486 | return glyph; | |
6487 | } | |
6488 | ||
6489 | ||
7ab12479 JB |
6490 | static int |
6491 | save_window_save (window, vector, i) | |
6492 | Lisp_Object window; | |
6493 | struct Lisp_Vector *vector; | |
6494 | int i; | |
6495 | { | |
6496 | register struct saved_window *p; | |
6497 | register struct window *w; | |
6498 | register Lisp_Object tem; | |
6499 | ||
265a9e55 | 6500 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
6501 | { |
6502 | p = SAVED_WINDOW_N (vector, i); | |
6503 | w = XWINDOW (window); | |
6504 | ||
2a1893f4 | 6505 | XSETFASTINT (w->temslot, i); i++; |
7ab12479 JB |
6506 | p->window = window; |
6507 | p->buffer = w->buffer; | |
949cf20f KS |
6508 | p->left_col = w->left_col; |
6509 | p->top_line = w->top_line; | |
6510 | p->total_cols = w->total_cols; | |
6511 | p->total_lines = w->total_lines; | |
7ab12479 | 6512 | p->hscroll = w->hscroll; |
ea68264b | 6513 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 6514 | p->display_table = w->display_table; |
949cf20f KS |
6515 | p->orig_top_line = w->orig_top_line; |
6516 | p->orig_total_lines = w->orig_total_lines; | |
6517 | p->left_margin_cols = w->left_margin_cols; | |
6518 | p->right_margin_cols = w->right_margin_cols; | |
6519 | p->left_fringe_width = w->left_fringe_width; | |
6520 | p->right_fringe_width = w->right_fringe_width; | |
6521 | p->fringes_outside_margins = w->fringes_outside_margins; | |
6522 | p->scroll_bar_width = w->scroll_bar_width; | |
6523 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6ad0381c | 6524 | p->dedicated = w->dedicated; |
265a9e55 | 6525 | if (!NILP (w->buffer)) |
7ab12479 JB |
6526 | { |
6527 | /* Save w's value of point in the window configuration. | |
6528 | If w is the selected window, then get the value of point | |
6529 | from the buffer; pointm is garbage in the selected window. */ | |
6530 | if (EQ (window, selected_window)) | |
6531 | { | |
6532 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
6533 | set_marker_both (p->pointm, w->buffer, |
6534 | BUF_PT (XBUFFER (w->buffer)), | |
6535 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
6536 | } |
6537 | else | |
eeb82665 | 6538 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 6539 | |
eeb82665 | 6540 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
6541 | p->start_at_line_beg = w->start_at_line_beg; |
6542 | ||
6543 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 6544 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6545 | } |
6546 | else | |
6547 | { | |
6548 | p->pointm = Qnil; | |
6549 | p->start = Qnil; | |
6550 | p->mark = Qnil; | |
6551 | p->start_at_line_beg = Qnil; | |
6552 | } | |
6553 | ||
265a9e55 | 6554 | if (NILP (w->parent)) |
7ab12479 JB |
6555 | p->parent = Qnil; |
6556 | else | |
6557 | p->parent = XWINDOW (w->parent)->temslot; | |
6558 | ||
265a9e55 | 6559 | if (NILP (w->prev)) |
7ab12479 JB |
6560 | p->prev = Qnil; |
6561 | else | |
6562 | p->prev = XWINDOW (w->prev)->temslot; | |
6563 | ||
265a9e55 | 6564 | if (!NILP (w->vchild)) |
7ab12479 | 6565 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 6566 | if (!NILP (w->hchild)) |
7ab12479 JB |
6567 | i = save_window_save (w->hchild, vector, i); |
6568 | } | |
6569 | ||
6570 | return i; | |
6571 | } | |
6572 | ||
a0d76c27 | 6573 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6574 | Scurrent_window_configuration, 0, 1, 0, |
6575 | doc: /* Return an object representing the current window configuration of FRAME. | |
6576 | If FRAME is nil or omitted, use the selected frame. | |
6577 | This describes the number of windows, their sizes and current buffers, | |
6578 | and for each displayed buffer, where display starts, and the positions of | |
6579 | point and mark. An exception is made for point in the current buffer: | |
6580 | its value is -not- saved. | |
6581 | This also records the currently selected frame, and FRAME's focus | |
6582 | redirection (see `redirect-frame-focus'). */) | |
6583 | (frame) | |
44fa5b1e | 6584 | Lisp_Object frame; |
7ab12479 JB |
6585 | { |
6586 | register Lisp_Object tem; | |
6587 | register int n_windows; | |
6588 | register struct save_window_data *data; | |
da2792e0 | 6589 | register struct Lisp_Vector *vec; |
7ab12479 | 6590 | register int i; |
44fa5b1e | 6591 | FRAME_PTR f; |
43bad991 | 6592 | |
44fa5b1e | 6593 | if (NILP (frame)) |
1ae1a37d | 6594 | frame = selected_frame; |
b7826503 | 6595 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 6596 | f = XFRAME (frame); |
7ab12479 | 6597 | |
44fa5b1e | 6598 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
26605be9 | 6599 | vec = allocate_other_vector (VECSIZE (struct save_window_data)); |
da2792e0 KH |
6600 | data = (struct save_window_data *)vec; |
6601 | ||
949cf20f KS |
6602 | XSETFASTINT (data->frame_cols, FRAME_COLS (f)); |
6603 | XSETFASTINT (data->frame_lines, FRAME_LINES (f)); | |
d834a2e9 | 6604 | XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f)); |
9ea173e8 | 6605 | XSETFASTINT (data->frame_tool_bar_lines, FRAME_TOOL_BAR_LINES (f)); |
1ae1a37d | 6606 | data->selected_frame = selected_frame; |
44fa5b1e | 6607 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6608 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6609 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6610 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6611 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6612 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
74112613 KH |
6613 | XSETINT (data->min_height, window_min_height); |
6614 | XSETINT (data->min_width, window_min_width); | |
7ab12479 JB |
6615 | tem = Fmake_vector (make_number (n_windows), Qnil); |
6616 | data->saved_windows = tem; | |
6617 | for (i = 0; i < n_windows; i++) | |
6618 | XVECTOR (tem)->contents[i] | |
8a450f0a | 6619 | = Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil); |
a1d58e5b | 6620 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6621 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6622 | return (tem); |
6623 | } | |
6624 | ||
6625 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
fdb82f93 | 6626 | 0, UNEVALLED, 0, |
a0a37a6f LT |
6627 | doc: /* Execute BODY, preserving window sizes and contents. |
6628 | Return the value of the last form in BODY. | |
fdb82f93 PJ |
6629 | Restore which buffer appears in which window, where display starts, |
6630 | and the value of point and mark for each window. | |
6631 | Also restore the choice of selected window. | |
6632 | Also restore which buffer is current. | |
6924dda6 MB |
6633 | Does not restore the value of point in current buffer. |
6634 | usage: (save-window-excursion BODY ...) */) | |
fdb82f93 | 6635 | (args) |
7ab12479 JB |
6636 | Lisp_Object args; |
6637 | { | |
6638 | register Lisp_Object val; | |
aed13378 | 6639 | register int count = SPECPDL_INDEX (); |
7ab12479 JB |
6640 | |
6641 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 6642 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
6643 | val = Fprogn (args); |
6644 | return unbind_to (count, val); | |
6645 | } | |
5500c422 | 6646 | |
94e16dd5 KS |
6647 | |
6648 | \f | |
6649 | /*********************************************************************** | |
6650 | Window Split Tree | |
6651 | ***********************************************************************/ | |
6652 | ||
6653 | static Lisp_Object | |
c16e1cc3 | 6654 | window_tree (w) |
94e16dd5 KS |
6655 | struct window *w; |
6656 | { | |
6657 | Lisp_Object tail = Qnil; | |
6658 | Lisp_Object result = Qnil; | |
6659 | ||
6660 | while (w) | |
6661 | { | |
6662 | Lisp_Object wn; | |
6663 | ||
6664 | XSETWINDOW (wn, w); | |
6665 | if (!NILP (w->hchild)) | |
6666 | wn = Fcons (Qnil, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6667 | window_tree (XWINDOW (w->hchild)))); |
94e16dd5 KS |
6668 | else if (!NILP (w->vchild)) |
6669 | wn = Fcons (Qt, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6670 | window_tree (XWINDOW (w->vchild)))); |
94e16dd5 KS |
6671 | |
6672 | if (NILP (result)) | |
6673 | { | |
6674 | result = tail = Fcons (wn, Qnil); | |
6675 | } | |
6676 | else | |
6677 | { | |
6678 | XSETCDR (tail, Fcons (wn, Qnil)); | |
6679 | tail = XCDR (tail); | |
6680 | } | |
6681 | ||
6682 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6683 | } | |
6684 | ||
6685 | return result; | |
6686 | } | |
6687 | ||
6688 | ||
6689 | ||
c16e1cc3 | 6690 | DEFUN ("window-tree", Fwindow_tree, Swindow_tree, |
94e16dd5 | 6691 | 0, 1, 0, |
c16e1cc3 | 6692 | doc: /* Return the window tree for frame FRAME. |
94e16dd5 KS |
6693 | |
6694 | The return value is a list of the form (ROOT MINI), where ROOT | |
c16e1cc3 | 6695 | represents the window tree of the frame's root window, and MINI |
94e16dd5 KS |
6696 | is the frame's minibuffer window. |
6697 | ||
6698 | If the root window is not split, ROOT is the root window itself. | |
6699 | Otherwise, ROOT is a list (DIR EDGES W1 W2 ...) where DIR is nil for a | |
008171a4 | 6700 | horizontal split, and t for a vertical split, EDGES gives the combined |
94e16dd5 KS |
6701 | size and position of the subwindows in the split, and the rest of the |
6702 | elements are the subwindows in the split. Each of the subwindows may | |
6703 | again be a window or a list representing a window split, and so on. | |
6704 | EDGES is a list \(LEFT TOP RIGHT BOTTOM) as returned by `window-edges'. | |
6705 | ||
6706 | If FRAME is nil or omitted, return information on the currently | |
6707 | selected frame. */) | |
6708 | (frame) | |
6709 | Lisp_Object frame; | |
6710 | { | |
94e16dd5 KS |
6711 | FRAME_PTR f; |
6712 | ||
6713 | if (NILP (frame)) | |
6714 | frame = selected_frame; | |
6715 | ||
6716 | CHECK_FRAME (frame); | |
6717 | f = XFRAME (frame); | |
6718 | ||
6719 | if (!FRAME_LIVE_P (f)) | |
6720 | return Qnil; | |
6721 | ||
c16e1cc3 | 6722 | return window_tree (XWINDOW (FRAME_ROOT_WINDOW (f))); |
94e16dd5 KS |
6723 | } |
6724 | ||
5500c422 GM |
6725 | \f |
6726 | /*********************************************************************** | |
6727 | Marginal Areas | |
6728 | ***********************************************************************/ | |
6729 | ||
6730 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6731 | 2, 3, 0, |
fdb82f93 | 6732 | doc: /* Set width of marginal areas of window WINDOW. |
e661376d KS |
6733 | If WINDOW is nil, set margins of the currently selected window. |
6734 | Second arg LEFT-WIDTH specifies the number of character cells to | |
6735 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6736 | does the same for the right marginal area. A nil width parameter | |
6737 | means no margin. */) | |
c10ce82e JB |
6738 | (window, left_width, right_width) |
6739 | Lisp_Object window, left_width, right_width; | |
5500c422 GM |
6740 | { |
6741 | struct window *w = decode_window (window); | |
5500c422 | 6742 | |
c2c3f202 KS |
6743 | /* Translate negative or zero widths to nil. |
6744 | Margins that are too wide have to be checked elsewhere. */ | |
6745 | ||
c10ce82e | 6746 | if (!NILP (left_width)) |
c2c3f202 | 6747 | { |
c10ce82e JB |
6748 | CHECK_NUMBER (left_width); |
6749 | if (XINT (left_width) <= 0) | |
6750 | left_width = Qnil; | |
c2c3f202 | 6751 | } |
5500c422 | 6752 | |
c10ce82e | 6753 | if (!NILP (right_width)) |
c2c3f202 | 6754 | { |
c10ce82e JB |
6755 | CHECK_NUMBER (right_width); |
6756 | if (XINT (right_width) <= 0) | |
6757 | right_width = Qnil; | |
c2c3f202 | 6758 | } |
5500c422 | 6759 | |
c10ce82e JB |
6760 | if (!EQ (w->left_margin_cols, left_width) |
6761 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6762 | { |
c10ce82e JB |
6763 | w->left_margin_cols = left_width; |
6764 | w->right_margin_cols = right_width; | |
949cf20f KS |
6765 | |
6766 | adjust_window_margins (w); | |
6767 | ||
6768 | ++windows_or_buffers_changed; | |
6769 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6770 | } | |
5500c422 | 6771 | |
5500c422 GM |
6772 | return Qnil; |
6773 | } | |
6774 | ||
6775 | ||
6776 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6777 | 0, 1, 0, | |
fdb82f93 PJ |
6778 | doc: /* Get width of marginal areas of window WINDOW. |
6779 | If WINDOW is omitted or nil, use the currently selected window. | |
6780 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
6781 | If a marginal area does not exist, its width will be returned | |
6782 | as nil. */) | |
6783 | (window) | |
5500c422 GM |
6784 | Lisp_Object window; |
6785 | { | |
6786 | struct window *w = decode_window (window); | |
949cf20f KS |
6787 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
6788 | } | |
6789 | ||
6790 | ||
6791 | \f | |
6792 | /*********************************************************************** | |
6793 | Fringes | |
6794 | ***********************************************************************/ | |
6795 | ||
6796 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, | |
6797 | 2, 4, 0, | |
62c2f759 | 6798 | doc: /* Set the fringe widths of window WINDOW. |
62c2f759 LK |
6799 | If WINDOW is nil, set the fringe widths of the currently selected |
6800 | window. | |
e661376d KS |
6801 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for |
6802 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6803 | fringe width. If a fringe width arg is nil, that means to use the | |
6804 | frame's default fringe width. Default fringe widths can be set with | |
6805 | the command `set-fringe-style'. | |
6806 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
62c2f759 LK |
6807 | outside of the display margins. By default, fringes are drawn between |
6808 | display marginal areas and the text area. */) | |
c10ce82e JB |
6809 | (window, left_width, right_width, outside_margins) |
6810 | Lisp_Object window, left_width, right_width, outside_margins; | |
949cf20f KS |
6811 | { |
6812 | struct window *w = decode_window (window); | |
6813 | ||
c10ce82e JB |
6814 | if (!NILP (left_width)) |
6815 | CHECK_NATNUM (left_width); | |
6816 | if (!NILP (right_width)) | |
6817 | CHECK_NATNUM (right_width); | |
5a857365 | 6818 | |
017e297e | 6819 | /* Do nothing on a tty. */ |
d46c6df5 NR |
6820 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
6821 | && (!EQ (w->left_fringe_width, left_width) | |
6822 | || !EQ (w->right_fringe_width, right_width) | |
6823 | || !EQ (w->fringes_outside_margins, outside_margins))) | |
949cf20f | 6824 | { |
c10ce82e JB |
6825 | w->left_fringe_width = left_width; |
6826 | w->right_fringe_width = right_width; | |
949cf20f KS |
6827 | w->fringes_outside_margins = outside_margins; |
6828 | ||
6829 | adjust_window_margins (w); | |
6830 | ||
6831 | clear_glyph_matrix (w->current_matrix); | |
6832 | w->window_end_valid = Qnil; | |
6833 | ||
6834 | ++windows_or_buffers_changed; | |
6835 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6836 | } | |
6837 | ||
6838 | return Qnil; | |
6839 | } | |
6840 | ||
6841 | ||
6842 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6843 | 0, 1, 0, | |
6844 | doc: /* Get width of fringes of window WINDOW. | |
6845 | If WINDOW is omitted or nil, use the currently selected window. | |
467e281a | 6846 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
949cf20f KS |
6847 | (window) |
6848 | Lisp_Object window; | |
6849 | { | |
6850 | struct window *w = decode_window (window); | |
d46c6df5 | 6851 | |
949cf20f KS |
6852 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6853 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
d46c6df5 NR |
6854 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
6855 | ? Qt : Qnil), Qnil))); | |
949cf20f KS |
6856 | } |
6857 | ||
6858 | ||
6859 | \f | |
6860 | /*********************************************************************** | |
6861 | Scroll bars | |
6862 | ***********************************************************************/ | |
6863 | ||
6864 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, Sset_window_scroll_bars, | |
6865 | 2, 4, 0, | |
6866 | doc: /* Set width and type of scroll bars of window WINDOW. | |
6867 | If window is nil, set scroll bars of the currently selected window. | |
6868 | Second parameter WIDTH specifies the pixel width for the scroll bar; | |
6869 | this is automatically adjusted to a multiple of the frame column width. | |
6870 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6871 | bar: left, right, or nil. | |
2f71b5ea | 6872 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6873 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6874 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
79fd290e JB |
6875 | (window, width, vertical_type, horizontal_type) |
6876 | Lisp_Object window, width, vertical_type, horizontal_type; | |
949cf20f KS |
6877 | { |
6878 | struct window *w = decode_window (window); | |
6879 | ||
6880 | if (!NILP (width)) | |
0f8fe9a2 SM |
6881 | { |
6882 | CHECK_NATNUM (width); | |
949cf20f | 6883 | |
0f8fe9a2 SM |
6884 | if (XINT (width) == 0) |
6885 | vertical_type = Qnil; | |
6886 | } | |
949cf20f | 6887 | |
2f71b5ea | 6888 | if (!(EQ (vertical_type, Qnil) |
0cc1039f | 6889 | || EQ (vertical_type, Qleft) |
2f71b5ea MY |
6890 | || EQ (vertical_type, Qright) |
6891 | || EQ (vertical_type, Qt))) | |
6892 | error ("Invalid type of vertical scroll bar"); | |
6893 | ||
949cf20f KS |
6894 | if (!EQ (w->scroll_bar_width, width) |
6895 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
6896 | { | |
6897 | w->scroll_bar_width = width; | |
6898 | w->vertical_scroll_bar_type = vertical_type; | |
6899 | ||
6900 | adjust_window_margins (w); | |
6901 | ||
6902 | clear_glyph_matrix (w->current_matrix); | |
6903 | w->window_end_valid = Qnil; | |
6904 | ||
6905 | ++windows_or_buffers_changed; | |
6906 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6907 | } | |
6908 | ||
6909 | return Qnil; | |
6910 | } | |
6911 | ||
6912 | ||
6913 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6914 | 0, 1, 0, | |
6915 | doc: /* Get width and type of scroll bars of window WINDOW. | |
6916 | If WINDOW is omitted or nil, use the currently selected window. | |
12853c58 KS |
6917 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6918 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6919 | value. */) | |
949cf20f KS |
6920 | (window) |
6921 | Lisp_Object window; | |
6922 | { | |
6923 | struct window *w = decode_window (window); | |
6924 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6925 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6926 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
6927 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
6928 | Fcons (w->vertical_scroll_bar_type, | |
6929 | Fcons (Qnil, Qnil)))); | |
5500c422 GM |
6930 | } |
6931 | ||
6932 | ||
7ab12479 | 6933 | \f |
5500c422 GM |
6934 | /*********************************************************************** |
6935 | Smooth scrolling | |
6936 | ***********************************************************************/ | |
6937 | ||
0cc1039f | 6938 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 PJ |
6939 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
6940 | Use the selected window if WINDOW is nil or omitted. | |
0cc1039f | 6941 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 6942 | optional second arg PIXELS-P means value is measured in pixels. */) |
0cc1039f KS |
6943 | (window, pixels_p) |
6944 | Lisp_Object window, pixels_p; | |
5500c422 | 6945 | { |
47004952 | 6946 | Lisp_Object result; |
5500c422 GM |
6947 | struct frame *f; |
6948 | struct window *w; | |
177c0ea7 | 6949 | |
5500c422 GM |
6950 | if (NILP (window)) |
6951 | window = selected_window; | |
47004952 | 6952 | else |
b7826503 | 6953 | CHECK_WINDOW (window); |
5500c422 GM |
6954 | w = XWINDOW (window); |
6955 | f = XFRAME (w->frame); | |
177c0ea7 | 6956 | |
5500c422 | 6957 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
6958 | result = (NILP (pixels_p) |
6959 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
6960 | : make_number (-w->vscroll)); | |
5500c422 | 6961 | else |
47004952 GM |
6962 | result = make_number (0); |
6963 | return result; | |
5500c422 GM |
6964 | } |
6965 | ||
6966 | ||
6967 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 6968 | 2, 3, 0, |
fdb82f93 | 6969 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
6970 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
6971 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 6972 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
6973 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
6974 | corresponds to an integral number of pixels. The return value is the | |
6975 | result of this rounding. | |
6976 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
0cc1039f KS |
6977 | (window, vscroll, pixels_p) |
6978 | Lisp_Object window, vscroll, pixels_p; | |
5500c422 GM |
6979 | { |
6980 | struct window *w; | |
6981 | struct frame *f; | |
177c0ea7 | 6982 | |
5500c422 GM |
6983 | if (NILP (window)) |
6984 | window = selected_window; | |
47004952 | 6985 | else |
b7826503 PJ |
6986 | CHECK_WINDOW (window); |
6987 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 6988 | |
5500c422 GM |
6989 | w = XWINDOW (window); |
6990 | f = XFRAME (w->frame); | |
6991 | ||
6992 | if (FRAME_WINDOW_P (f)) | |
6993 | { | |
6994 | int old_dy = w->vscroll; | |
177c0ea7 | 6995 | |
0cc1039f KS |
6996 | w->vscroll = - (NILP (pixels_p) |
6997 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
6998 | : XFLOATINT (vscroll)); | |
47004952 | 6999 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 7000 | |
e56263e5 KS |
7001 | if (w->vscroll != old_dy) |
7002 | { | |
7003 | /* Adjust glyph matrix of the frame if the virtual display | |
7004 | area becomes larger than before. */ | |
7005 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
7006 | adjust_glyphs (f); | |
177c0ea7 | 7007 | |
e56263e5 KS |
7008 | /* Prevent redisplay shortcuts. */ |
7009 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
7010 | } | |
5500c422 | 7011 | } |
177c0ea7 | 7012 | |
0cc1039f | 7013 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 7014 | } |
177c0ea7 | 7015 | |
7bbb5782 GM |
7016 | \f |
7017 | /* Call FN for all leaf windows on frame F. FN is called with the | |
7018 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 7019 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 GM |
7020 | |
7021 | void | |
f95464e4 | 7022 | foreach_window (f, fn, user_data) |
7bbb5782 | 7023 | struct frame *f; |
f95464e4 GM |
7024 | int (* fn) P_ ((struct window *, void *)); |
7025 | void *user_data; | |
7bbb5782 | 7026 | { |
76fb556f YM |
7027 | /* Fdelete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
7028 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) | |
7029 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
7030 | } |
7031 | ||
7032 | ||
7033 | /* Helper function for foreach_window. Call FN for all leaf windows | |
7034 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 7035 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 7036 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 7037 | |
67492200 | 7038 | static int |
f95464e4 | 7039 | foreach_window_1 (w, fn, user_data) |
7bbb5782 | 7040 | struct window *w; |
f95464e4 GM |
7041 | int (* fn) P_ ((struct window *, void *)); |
7042 | void *user_data; | |
7bbb5782 | 7043 | { |
67492200 | 7044 | int cont; |
177c0ea7 | 7045 | |
67492200 | 7046 | for (cont = 1; w && cont;) |
7bbb5782 GM |
7047 | { |
7048 | if (!NILP (w->hchild)) | |
f95464e4 | 7049 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 7050 | else if (!NILP (w->vchild)) |
f95464e4 | 7051 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
177c0ea7 | 7052 | else |
0f532a9a | 7053 | cont = fn (w, user_data); |
177c0ea7 | 7054 | |
7bbb5782 GM |
7055 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
7056 | } | |
67492200 GM |
7057 | |
7058 | return cont; | |
7bbb5782 GM |
7059 | } |
7060 | ||
7061 | ||
6d194a45 | 7062 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 7063 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
7064 | the window start. */ |
7065 | ||
67492200 | 7066 | static int |
7bbb5782 GM |
7067 | freeze_window_start (w, freeze_p) |
7068 | struct window *w; | |
f95464e4 | 7069 | void *freeze_p; |
7bbb5782 GM |
7070 | { |
7071 | if (w == XWINDOW (selected_window) | |
7072 | || MINI_WINDOW_P (w) | |
7073 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
24d744ac | 7074 | && ! NILP (Vminibuf_scroll_window) |
7bbb5782 | 7075 | && w == XWINDOW (Vminibuf_scroll_window))) |
f95464e4 | 7076 | freeze_p = NULL; |
177c0ea7 | 7077 | |
f95464e4 | 7078 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 7079 | return 1; |
7bbb5782 GM |
7080 | } |
7081 | ||
7082 | ||
7083 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
7084 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
7085 | means freeze the window start. */ | |
7086 | ||
7087 | void | |
7088 | freeze_window_starts (f, freeze_p) | |
7089 | struct frame *f; | |
7090 | int freeze_p; | |
7091 | { | |
cbccabec | 7092 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 7093 | } |
5500c422 GM |
7094 | |
7095 | \f | |
7096 | /*********************************************************************** | |
7097 | Initialization | |
7098 | ***********************************************************************/ | |
7099 | ||
cbff28e8 RS |
7100 | /* Return 1 if window configurations C1 and C2 |
7101 | describe the same state of affairs. This is used by Fequal. */ | |
7102 | ||
7103 | int | |
2f8274be | 7104 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 7105 | Lisp_Object c1, c2; |
2f8274be | 7106 | int ignore_positions; |
cbff28e8 RS |
7107 | { |
7108 | register struct save_window_data *d1, *d2; | |
7109 | struct Lisp_Vector *sw1, *sw2; | |
7110 | int i; | |
7111 | ||
663fbbba KS |
7112 | CHECK_WINDOW_CONFIGURATION (c1); |
7113 | CHECK_WINDOW_CONFIGURATION (c2); | |
177c0ea7 | 7114 | |
cbff28e8 RS |
7115 | d1 = (struct save_window_data *) XVECTOR (c1); |
7116 | d2 = (struct save_window_data *) XVECTOR (c2); | |
7117 | sw1 = XVECTOR (d1->saved_windows); | |
7118 | sw2 = XVECTOR (d2->saved_windows); | |
7119 | ||
949cf20f | 7120 | if (! EQ (d1->frame_cols, d2->frame_cols)) |
cbff28e8 | 7121 | return 0; |
949cf20f | 7122 | if (! EQ (d1->frame_lines, d2->frame_lines)) |
cbff28e8 RS |
7123 | return 0; |
7124 | if (! EQ (d1->frame_menu_bar_lines, d2->frame_menu_bar_lines)) | |
7125 | return 0; | |
7126 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
7127 | return 0; | |
7128 | /* Don't compare the current_window field directly. | |
7129 | Instead see w1_is_current and w2_is_current, below. */ | |
7130 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
7131 | return 0; | |
2f8274be | 7132 | if (! ignore_positions) |
3f49fddc KS |
7133 | { |
7134 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
7135 | return 0; | |
7136 | if (! EQ (d1->minibuf_selected_window, d2->minibuf_selected_window)) | |
7137 | return 0; | |
7138 | } | |
cbff28e8 RS |
7139 | /* Don't compare the root_window field. |
7140 | We don't require the two configurations | |
7141 | to use the same window object, | |
7142 | and the two root windows must be equivalent | |
7143 | if everything else compares equal. */ | |
7144 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
7145 | return 0; | |
7146 | if (! EQ (d1->min_width, d2->min_width)) | |
7147 | return 0; | |
7148 | if (! EQ (d1->min_height, d2->min_height)) | |
7149 | return 0; | |
7150 | ||
7151 | /* Verify that the two confis have the same number of windows. */ | |
7152 | if (sw1->size != sw2->size) | |
7153 | return 0; | |
7154 | ||
7155 | for (i = 0; i < sw1->size; i++) | |
7156 | { | |
7157 | struct saved_window *p1, *p2; | |
7158 | int w1_is_current, w2_is_current; | |
7159 | ||
7160 | p1 = SAVED_WINDOW_N (sw1, i); | |
7161 | p2 = SAVED_WINDOW_N (sw2, i); | |
7162 | ||
7163 | /* Verify that the current windows in the two | |
7164 | configurations correspond to each other. */ | |
7165 | w1_is_current = EQ (d1->current_window, p1->window); | |
7166 | w2_is_current = EQ (d2->current_window, p2->window); | |
7167 | ||
7168 | if (w1_is_current != w2_is_current) | |
7169 | return 0; | |
7170 | ||
7171 | /* Verify that the corresponding windows do match. */ | |
7172 | if (! EQ (p1->buffer, p2->buffer)) | |
7173 | return 0; | |
949cf20f | 7174 | if (! EQ (p1->left_col, p2->left_col)) |
cbff28e8 | 7175 | return 0; |
949cf20f | 7176 | if (! EQ (p1->top_line, p2->top_line)) |
cbff28e8 | 7177 | return 0; |
949cf20f | 7178 | if (! EQ (p1->total_cols, p2->total_cols)) |
cbff28e8 | 7179 | return 0; |
949cf20f | 7180 | if (! EQ (p1->total_lines, p2->total_lines)) |
cbff28e8 | 7181 | return 0; |
cbff28e8 RS |
7182 | if (! EQ (p1->display_table, p2->display_table)) |
7183 | return 0; | |
7184 | if (! EQ (p1->parent, p2->parent)) | |
7185 | return 0; | |
7186 | if (! EQ (p1->prev, p2->prev)) | |
7187 | return 0; | |
2f8274be RS |
7188 | if (! ignore_positions) |
7189 | { | |
7190 | if (! EQ (p1->hscroll, p2->hscroll)) | |
7191 | return 0; | |
ea68264b GM |
7192 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
7193 | return 0; | |
2f8274be RS |
7194 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
7195 | return 0; | |
7196 | if (NILP (Fequal (p1->start, p2->start))) | |
7197 | return 0; | |
7198 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
7199 | return 0; | |
7200 | if (NILP (Fequal (p1->mark, p2->mark))) | |
7201 | return 0; | |
7202 | } | |
949cf20f KS |
7203 | if (! EQ (p1->left_margin_cols, p2->left_margin_cols)) |
7204 | return 0; | |
7205 | if (! EQ (p1->right_margin_cols, p2->right_margin_cols)) | |
7206 | return 0; | |
7207 | if (! EQ (p1->left_fringe_width, p2->left_fringe_width)) | |
7208 | return 0; | |
7209 | if (! EQ (p1->right_fringe_width, p2->right_fringe_width)) | |
7210 | return 0; | |
7211 | if (! EQ (p1->fringes_outside_margins, p2->fringes_outside_margins)) | |
7212 | return 0; | |
7213 | if (! EQ (p1->scroll_bar_width, p2->scroll_bar_width)) | |
7214 | return 0; | |
7215 | if (! EQ (p1->vertical_scroll_bar_type, p2->vertical_scroll_bar_type)) | |
7216 | return 0; | |
cbff28e8 RS |
7217 | } |
7218 | ||
7219 | return 1; | |
7220 | } | |
2f8274be RS |
7221 | |
7222 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
7223 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
7224 | doc: /* Compare two window configurations as regards the structure of windows. |
7225 | This function ignores details such as the values of point and mark | |
7226 | and scrolling positions. */) | |
7227 | (x, y) | |
2f8274be RS |
7228 | Lisp_Object x, y; |
7229 | { | |
7230 | if (compare_window_configurations (x, y, 1)) | |
7231 | return Qt; | |
7232 | return Qnil; | |
7233 | } | |
cbff28e8 | 7234 | \f |
dfcf069d | 7235 | void |
7ab12479 JB |
7236 | init_window_once () |
7237 | { | |
1ae1a37d GM |
7238 | struct frame *f = make_terminal_frame (); |
7239 | XSETFRAME (selected_frame, f); | |
7240 | Vterminal_frame = selected_frame; | |
7241 | minibuf_window = f->minibuffer_window; | |
7242 | selected_window = f->selected_window; | |
7243 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
7244 | |
7245 | window_initialized = 1; | |
7ab12479 JB |
7246 | } |
7247 | ||
67492200 GM |
7248 | void |
7249 | init_window () | |
7250 | { | |
7251 | Vwindow_list = Qnil; | |
7252 | } | |
7253 | ||
dfcf069d | 7254 | void |
7ab12479 JB |
7255 | syms_of_window () |
7256 | { | |
c525d842 CY |
7257 | Qscroll_up = intern ("scroll-up"); |
7258 | staticpro (&Qscroll_up); | |
7259 | ||
7260 | Qscroll_down = intern ("scroll-down"); | |
7261 | staticpro (&Qscroll_down); | |
7262 | ||
8a37516b GM |
7263 | Qwindow_size_fixed = intern ("window-size-fixed"); |
7264 | staticpro (&Qwindow_size_fixed); | |
c0e7ccd3 | 7265 | Fset (Qwindow_size_fixed, Qnil); |
177c0ea7 | 7266 | |
543f5fb1 RS |
7267 | staticpro (&Qwindow_configuration_change_hook); |
7268 | Qwindow_configuration_change_hook | |
7269 | = intern ("window-configuration-change-hook"); | |
7270 | ||
7ab12479 JB |
7271 | Qwindowp = intern ("windowp"); |
7272 | staticpro (&Qwindowp); | |
7273 | ||
3f8ab7bd RS |
7274 | Qwindow_configuration_p = intern ("window-configuration-p"); |
7275 | staticpro (&Qwindow_configuration_p); | |
7276 | ||
806b4d9b JB |
7277 | Qwindow_live_p = intern ("window-live-p"); |
7278 | staticpro (&Qwindow_live_p); | |
605be8af | 7279 | |
2cccc823 | 7280 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
7281 | staticpro (&Qtemp_buffer_show_hook); |
7282 | ||
67492200 | 7283 | staticpro (&Vwindow_list); |
8bfb170b KS |
7284 | |
7285 | minibuf_selected_window = Qnil; | |
3dbab091 | 7286 | staticpro (&minibuf_selected_window); |
67492200 | 7287 | |
66fe93d1 | 7288 | window_scroll_pixel_based_preserve_y = -1; |
66d43aea | 7289 | |
7ab12479 | 7290 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
fdb82f93 PJ |
7291 | doc: /* Non-nil means call as function to display a help buffer. |
7292 | The function is called with one argument, the buffer to be displayed. | |
7293 | Used by `with-output-to-temp-buffer'. | |
7294 | If this function is used, then it must do the entire job of showing | |
7295 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
7296 | Vtemp_buffer_show_function = Qnil; |
7297 | ||
7298 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
fdb82f93 PJ |
7299 | doc: /* If non-nil, function to call to handle `display-buffer'. |
7300 | It will receive two args, the buffer and a flag which if non-nil means | |
c2755926 LT |
7301 | that the currently selected window is not acceptable. |
7302 | It should choose or create a window, display the specified buffer in it, | |
7303 | and return the window. | |
fdb82f93 PJ |
7304 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window' |
7305 | work using this function. */); | |
7ab12479 JB |
7306 | Vdisplay_buffer_function = Qnil; |
7307 | ||
6529ed87 | 7308 | DEFVAR_LISP ("even-window-heights", &Veven_window_heights, |
fdb82f93 PJ |
7309 | doc: /* *If non-nil, `display-buffer' should even the window heights. |
7310 | If nil, `display-buffer' will leave the window configuration alone. */); | |
6529ed87 GM |
7311 | Veven_window_heights = Qt; |
7312 | ||
7ab12479 | 7313 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
fdb82f93 | 7314 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
7315 | Vminibuf_scroll_window = Qnil; |
7316 | ||
cc91894c | 7317 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows, |
26124d5e | 7318 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
7319 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
7320 | is displayed in the `mode-line' face. */); | |
7321 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 7322 | |
7ab12479 | 7323 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, |
fdb82f93 | 7324 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
7325 | Vother_window_scroll_buffer = Qnil; |
7326 | ||
44fa5b1e | 7327 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
fdb82f93 | 7328 | doc: /* *Non-nil means `display-buffer' should make a separate frame. */); |
44fa5b1e | 7329 | pop_up_frames = 0; |
7ab12479 | 7330 | |
e56263e5 KS |
7331 | DEFVAR_BOOL ("auto-window-vscroll", &auto_window_vscroll_p, |
7332 | doc: /* *Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); | |
7333 | auto_window_vscroll_p = 1; | |
7334 | ||
9c3da604 | 7335 | DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames, |
fdb82f93 PJ |
7336 | doc: /* *Non-nil means `display-buffer' should reuse frames. |
7337 | If the buffer in question is already displayed in a frame, raise that frame. */); | |
9c3da604 GM |
7338 | display_buffer_reuse_frames = 0; |
7339 | ||
44fa5b1e | 7340 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
fdb82f93 PJ |
7341 | doc: /* Function to call to handle automatic new frame creation. |
7342 | It is called with no arguments and should return a newly created frame. | |
7343 | ||
7344 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))' | |
7345 | where `pop-up-frame-alist' would hold the default frame parameters. */); | |
44fa5b1e | 7346 | Vpop_up_frame_function = Qnil; |
7ab12479 | 7347 | |
a90712c2 | 7348 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
fdb82f93 | 7349 | doc: /* *List of buffer names that should have their own special frames. |
c019856e RS |
7350 | Displaying a buffer with `display-buffer' or `pop-to-buffer', |
7351 | if its name is in this list, makes a special frame for it | |
fdb82f93 PJ |
7352 | using `special-display-function'. See also `special-display-regexps'. |
7353 | ||
7354 | An element of the list can be a list instead of just a string. | |
7355 | There are two ways to use a list as an element: | |
7356 | (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...) | |
3cb7143c RS |
7357 | In the first case, the FRAME-PARAMETERS are pairs of the form |
7358 | \(PARAMETER . VALUE); these parameter values are used to create the frame. | |
7359 | In the second case, FUNCTION is called with BUFFER as the first argument, | |
7360 | followed by the OTHER-ARGS--it can display BUFFER in any way it likes. | |
fdb82f93 PJ |
7361 | All this is done by the function found in `special-display-function'. |
7362 | ||
499858c5 RS |
7363 | If the specified frame parameters include (same-buffer . t), the |
7364 | buffer is displayed in the currently selected window. Otherwise, if | |
7365 | they include (same-frame . t), the buffer is displayed in a new window | |
7366 | in the currently selected frame. | |
7367 | ||
fdb82f93 PJ |
7368 | If this variable appears \"not to work\", because you add a name to it |
7369 | but that buffer still appears in the selected window, look at the | |
7370 | values of `same-window-buffer-names' and `same-window-regexps'. | |
7371 | Those variables take precedence over this one. */); | |
a90712c2 RS |
7372 | Vspecial_display_buffer_names = Qnil; |
7373 | ||
7374 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
fdb82f93 | 7375 | doc: /* *List of regexps saying which buffers should have their own special frames. |
c019856e RS |
7376 | When displaying a buffer with `display-buffer' or `pop-to-buffer', |
7377 | if any regexp in this list matches the buffer name, it makes a | |
7378 | special frame for the buffer by calling `special-display-function'. | |
fdb82f93 PJ |
7379 | |
7380 | An element of the list can be a list instead of just a string. | |
7381 | There are two ways to use a list as an element: | |
7382 | (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...) | |
3cb7143c RS |
7383 | In the first case, the FRAME-PARAMETERS are pairs of the form |
7384 | \(PARAMETER . VALUE); these parameter values are used to create the frame. | |
7385 | In the second case, FUNCTION is called with BUFFER as the first argument, | |
7386 | followed by the OTHER-ARGS--it can display the buffer in any way it likes. | |
fdb82f93 PJ |
7387 | All this is done by the function found in `special-display-function'. |
7388 | ||
499858c5 RS |
7389 | If the specified frame parameters include (same-buffer . t), the |
7390 | buffer is displayed in the currently selected window. Otherwise, if | |
7391 | they include (same-frame . t), the buffer is displayed in a new window | |
7392 | in the currently selected frame. | |
7393 | ||
fdb82f93 PJ |
7394 | If this variable appears \"not to work\", because you add a regexp to it |
7395 | but the matching buffers still appear in the selected window, look at the | |
7396 | values of `same-window-buffer-names' and `same-window-regexps'. | |
7397 | Those variables take precedence over this one. */); | |
a90712c2 RS |
7398 | Vspecial_display_regexps = Qnil; |
7399 | ||
7400 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
fdb82f93 PJ |
7401 | doc: /* Function to call to make a new frame for a special buffer. |
7402 | It is called with two arguments, the buffer and optional buffer specific | |
7403 | data, and should return a window displaying that buffer. | |
a5731348 SM |
7404 | The default value normally makes a separate frame for the buffer, |
7405 | using `special-display-frame-alist' to specify the frame parameters. | |
7406 | But if the buffer specific data includes (same-buffer . t) then the | |
7407 | buffer is displayed in the current selected window. | |
7408 | Otherwise if it includes (same-frame . t) then the buffer is displayed in | |
7409 | a new window in the currently selected frame. | |
7410 | ||
7411 | A buffer is special if it is listed in `special-display-buffer-names' | |
fdb82f93 | 7412 | or matches a regexp in `special-display-regexps'. */); |
a90712c2 RS |
7413 | Vspecial_display_function = Qnil; |
7414 | ||
855d8627 | 7415 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
fdb82f93 PJ |
7416 | doc: /* *List of buffer names that should appear in the selected window. |
7417 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer' | |
7418 | switches to it in the selected window, rather than making it appear | |
7419 | in some other window. | |
7420 | ||
7421 | An element of the list can be a cons cell instead of just a string. | |
7422 | Then the car must be a string, which specifies the buffer name. | |
7423 | This is for compatibility with `special-display-buffer-names'; | |
7424 | the cdr of the cons cell is ignored. | |
7425 | ||
7426 | See also `same-window-regexps'. */); | |
855d8627 RS |
7427 | Vsame_window_buffer_names = Qnil; |
7428 | ||
7429 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
fdb82f93 PJ |
7430 | doc: /* *List of regexps saying which buffers should appear in the selected window. |
7431 | If a buffer name matches one of these regexps, then displaying it | |
7432 | using `display-buffer' or `pop-to-buffer' switches to it | |
7433 | in the selected window, rather than making it appear in some other window. | |
7434 | ||
7435 | An element of the list can be a cons cell instead of just a string. | |
7436 | Then the car must be a string, which specifies the buffer name. | |
7437 | This is for compatibility with `special-display-buffer-names'; | |
7438 | the cdr of the cons cell is ignored. | |
7439 | ||
7440 | See also `same-window-buffer-names'. */); | |
855d8627 RS |
7441 | Vsame_window_regexps = Qnil; |
7442 | ||
7ab12479 | 7443 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
fdb82f93 | 7444 | doc: /* *Non-nil means display-buffer should make new windows. */); |
7ab12479 JB |
7445 | pop_up_windows = 1; |
7446 | ||
7447 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
fdb82f93 | 7448 | doc: /* *Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
7449 | next_screen_context_lines = 2; |
7450 | ||
7451 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
bdbae5b8 EZ |
7452 | doc: /* *A window must be at least this tall to be eligible for splitting |
7453 | by `display-buffer'. The value is in line units. | |
fdb82f93 | 7454 | If there is only one window, it is split regardless of this value. */); |
7ab12479 JB |
7455 | split_height_threshold = 500; |
7456 | ||
7457 | DEFVAR_INT ("window-min-height", &window_min_height, | |
bdbae5b8 EZ |
7458 | doc: /* *Delete any window less than this tall (including its mode line). |
7459 | The value is in line units. */); | |
7ab12479 JB |
7460 | window_min_height = 4; |
7461 | ||
7462 | DEFVAR_INT ("window-min-width", &window_min_width, | |
bdbae5b8 | 7463 | doc: /* *Delete any window less than this wide (measured in characters). */); |
7ab12479 JB |
7464 | window_min_width = 10; |
7465 | ||
5500c422 GM |
7466 | DEFVAR_LISP ("scroll-preserve-screen-position", |
7467 | &Vscroll_preserve_screen_position, | |
bdf4ec93 RS |
7468 | doc: /* *Controls if scroll commands move point to keep its screen line unchanged. |
7469 | A value of nil means point does not keep its screen position except | |
7470 | at the scroll margin or window boundary respectively. | |
7471 | A value of t means point keeps its screen position if the scroll | |
7472 | command moved it vertically out of the window, e.g. when scrolling | |
7473 | by full screens. | |
7474 | Any other value means point always keeps its screen position. */); | |
5500c422 | 7475 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 7476 | |
543f5fb1 RS |
7477 | DEFVAR_LISP ("window-configuration-change-hook", |
7478 | &Vwindow_configuration_change_hook, | |
fdb82f93 PJ |
7479 | doc: /* Functions to call when window configuration changes. |
7480 | The selected frame is the one whose configuration has changed. */); | |
543f5fb1 RS |
7481 | Vwindow_configuration_change_hook = Qnil; |
7482 | ||
7ab12479 JB |
7483 | defsubr (&Sselected_window); |
7484 | defsubr (&Sminibuffer_window); | |
7485 | defsubr (&Swindow_minibuffer_p); | |
7486 | defsubr (&Swindowp); | |
806b4d9b | 7487 | defsubr (&Swindow_live_p); |
7ab12479 | 7488 | defsubr (&Spos_visible_in_window_p); |
536833ab | 7489 | defsubr (&Swindow_line_height); |
7ab12479 JB |
7490 | defsubr (&Swindow_buffer); |
7491 | defsubr (&Swindow_height); | |
7492 | defsubr (&Swindow_width); | |
7493 | defsubr (&Swindow_hscroll); | |
7494 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
7495 | defsubr (&Swindow_redisplay_end_trigger); |
7496 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 7497 | defsubr (&Swindow_edges); |
c99a9eb3 RS |
7498 | defsubr (&Swindow_pixel_edges); |
7499 | defsubr (&Swindow_inside_edges); | |
7500 | defsubr (&Swindow_inside_pixel_edges); | |
d5783c40 JB |
7501 | defsubr (&Scoordinates_in_window_p); |
7502 | defsubr (&Swindow_at); | |
7ab12479 JB |
7503 | defsubr (&Swindow_point); |
7504 | defsubr (&Swindow_start); | |
7505 | defsubr (&Swindow_end); | |
7506 | defsubr (&Sset_window_point); | |
7507 | defsubr (&Sset_window_start); | |
7508 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 7509 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
7510 | defsubr (&Swindow_display_table); |
7511 | defsubr (&Sset_window_display_table); | |
7512 | defsubr (&Snext_window); | |
7513 | defsubr (&Sprevious_window); | |
7514 | defsubr (&Sother_window); | |
7515 | defsubr (&Sget_lru_window); | |
7516 | defsubr (&Sget_largest_window); | |
7517 | defsubr (&Sget_buffer_window); | |
7518 | defsubr (&Sdelete_other_windows); | |
7519 | defsubr (&Sdelete_windows_on); | |
7520 | defsubr (&Sreplace_buffer_in_windows); | |
7521 | defsubr (&Sdelete_window); | |
7522 | defsubr (&Sset_window_buffer); | |
7523 | defsubr (&Sselect_window); | |
4628f7a4 EN |
7524 | defsubr (&Sspecial_display_p); |
7525 | defsubr (&Ssame_window_p); | |
7ab12479 | 7526 | defsubr (&Sdisplay_buffer); |
e661376d | 7527 | defsubr (&Sforce_window_update); |
7ab12479 JB |
7528 | defsubr (&Ssplit_window); |
7529 | defsubr (&Senlarge_window); | |
7530 | defsubr (&Sshrink_window); | |
0d384044 | 7531 | defsubr (&Sadjust_window_trailing_edge); |
7ab12479 JB |
7532 | defsubr (&Sscroll_up); |
7533 | defsubr (&Sscroll_down); | |
7534 | defsubr (&Sscroll_left); | |
7535 | defsubr (&Sscroll_right); | |
ccd0664b | 7536 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 7537 | defsubr (&Sscroll_other_window); |
fa832261 | 7538 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 7539 | defsubr (&Srecenter); |
81fe0836 | 7540 | defsubr (&Swindow_text_height); |
7ab12479 JB |
7541 | defsubr (&Smove_to_window_line); |
7542 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 7543 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
7544 | defsubr (&Sset_window_configuration); |
7545 | defsubr (&Scurrent_window_configuration); | |
7546 | defsubr (&Ssave_window_excursion); | |
c16e1cc3 | 7547 | defsubr (&Swindow_tree); |
5500c422 GM |
7548 | defsubr (&Sset_window_margins); |
7549 | defsubr (&Swindow_margins); | |
949cf20f KS |
7550 | defsubr (&Sset_window_fringes); |
7551 | defsubr (&Swindow_fringes); | |
7552 | defsubr (&Sset_window_scroll_bars); | |
7553 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
7554 | defsubr (&Swindow_vscroll); |
7555 | defsubr (&Sset_window_vscroll); | |
2f8274be | 7556 | defsubr (&Scompare_window_configurations); |
67492200 | 7557 | defsubr (&Swindow_list); |
7ab12479 JB |
7558 | } |
7559 | ||
dfcf069d | 7560 | void |
7ab12479 JB |
7561 | keys_of_window () |
7562 | { | |
7563 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
7564 | initial_define_key (control_x_map, '2', "split-window"); | |
7565 | initial_define_key (control_x_map, '0', "delete-window"); | |
7566 | initial_define_key (control_x_map, 'o', "other-window"); | |
7567 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
7568 | initial_define_key (control_x_map, '<', "scroll-left"); | |
7569 | initial_define_key (control_x_map, '>', "scroll-right"); | |
7570 | ||
7571 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
7572 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
7573 | initial_define_key (meta_map, 'v', "scroll-down"); | |
7574 | ||
7575 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
7576 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
7577 | } | |
ab5796a9 MB |
7578 | |
7579 | /* arch-tag: 90a9c576-0590-48f1-a5f1-6c96a0452d9f | |
7580 | (do not change this comment) */ |