Commit | Line | Data |
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7ab12479 JB |
1 | /* Window creation, deletion and examination for GNU Emacs. |
2 | Does not include redisplay. | |
203eb0aa | 3 | Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1996, 1997, 1998, 2000, |
8cabe764 GM |
4 | 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
5 | Free Software Foundation, Inc. | |
7ab12479 JB |
6 | |
7 | This file is part of GNU Emacs. | |
8 | ||
9 | GNU Emacs is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
684d6f5b | 11 | the Free Software Foundation; either version 3, or (at your option) |
7ab12479 JB |
12 | any later version. |
13 | ||
14 | GNU Emacs is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
21 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
22 | Boston, MA 02110-1301, USA. */ | |
7ab12479 | 23 | |
18160b98 | 24 | #include <config.h> |
4d553a13 KL |
25 | #include <stdio.h> |
26 | ||
7ab12479 JB |
27 | #include "lisp.h" |
28 | #include "buffer.h" | |
3e4731a3 | 29 | #include "keyboard.h" |
e35f6ff7 | 30 | #include "keymap.h" |
44fa5b1e | 31 | #include "frame.h" |
7ab12479 JB |
32 | #include "window.h" |
33 | #include "commands.h" | |
34 | #include "indent.h" | |
35 | #include "termchar.h" | |
36 | #include "disptab.h" | |
dfcf069d | 37 | #include "dispextern.h" |
5500c422 GM |
38 | #include "blockinput.h" |
39 | #include "intervals.h" | |
de509a60 | 40 | #include "termhooks.h" /* For FRAME_TERMINAL. */ |
5500c422 | 41 | |
6d55d620 | 42 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 43 | #include "xterm.h" |
5500c422 | 44 | #endif /* HAVE_X_WINDOWS */ |
8f23f280 AI |
45 | #ifdef WINDOWSNT |
46 | #include "w32term.h" | |
47 | #endif | |
1e3c8885 EZ |
48 | #ifdef MSDOS |
49 | #include "msdos.h" | |
50 | #endif | |
e0f712ba | 51 | #ifdef MAC_OS |
1a578e9b AC |
52 | #include "macterm.h" |
53 | #endif | |
5500c422 | 54 | |
5500c422 | 55 | |
3f8ab7bd | 56 | Lisp_Object Qwindowp, Qwindow_live_p, Qwindow_configuration_p; |
c525d842 | 57 | Lisp_Object Qscroll_up, Qscroll_down; |
90647b07 | 58 | Lisp_Object Qwindow_size_fixed; |
49b996e7 | 59 | extern Lisp_Object Qleft_margin, Qright_margin; |
7ab12479 | 60 | |
521b203e | 61 | static int displayed_window_lines P_ ((struct window *)); |
5e14b1fc | 62 | static struct window *decode_window P_ ((Lisp_Object)); |
5500c422 GM |
63 | static int count_windows P_ ((struct window *)); |
64 | static int get_leaf_windows P_ ((struct window *, struct window **, int)); | |
65 | static void window_scroll P_ ((Lisp_Object, int, int, int)); | |
66 | static void window_scroll_pixel_based P_ ((Lisp_Object, int, int, int)); | |
67 | static void window_scroll_line_based P_ ((Lisp_Object, int, int, int)); | |
233a4a2c | 68 | static int window_min_size_1 P_ ((struct window *, int)); |
f1de8c77 | 69 | static int window_min_size_2 P_ ((struct window *, int)); |
f984d4fc | 70 | static int window_min_size P_ ((struct window *, int, int, int *)); |
5fe0b054 | 71 | static void size_window P_ ((Lisp_Object, int, int, int, int, int)); |
f95464e4 | 72 | static int freeze_window_start P_ ((struct window *, void *)); |
f984d4fc | 73 | static int window_fixed_size_p P_ ((struct window *, int, int)); |
56ebfae2 | 74 | static void enlarge_window P_ ((Lisp_Object, int, int)); |
67492200 | 75 | static Lisp_Object window_list P_ ((void)); |
f95464e4 | 76 | static int add_window_to_list P_ ((struct window *, void *)); |
118ea242 GM |
77 | static int candidate_window_p P_ ((Lisp_Object, Lisp_Object, Lisp_Object, |
78 | Lisp_Object)); | |
67492200 GM |
79 | static Lisp_Object next_window P_ ((Lisp_Object, Lisp_Object, |
80 | Lisp_Object, int)); | |
81 | static void decode_next_window_args P_ ((Lisp_Object *, Lisp_Object *, | |
82 | Lisp_Object *)); | |
f95464e4 GM |
83 | static int foreach_window_1 P_ ((struct window *, |
84 | int (* fn) (struct window *, void *), | |
85 | void *)); | |
cd2904bd | 86 | static Lisp_Object window_list_1 P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); |
b7354ddf | 87 | |
7ab12479 JB |
88 | /* This is the window in which the terminal's cursor should |
89 | be left when nothing is being done with it. This must | |
90 | always be a leaf window, and its buffer is selected by | |
91 | the top level editing loop at the end of each command. | |
92 | ||
93 | This value is always the same as | |
44fa5b1e | 94 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
95 | |
96 | Lisp_Object selected_window; | |
97 | ||
67492200 GM |
98 | /* A list of all windows for use by next_window and Fwindow_list. |
99 | Functions creating or deleting windows should invalidate this cache | |
100 | by setting it to nil. */ | |
101 | ||
102 | Lisp_Object Vwindow_list; | |
103 | ||
5500c422 GM |
104 | /* The mini-buffer window of the selected frame. |
105 | Note that you cannot test for mini-bufferness of an arbitrary window | |
106 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 | 107 | the selected window. */ |
5500c422 | 108 | |
7ab12479 JB |
109 | Lisp_Object minibuf_window; |
110 | ||
3f49fddc KS |
111 | /* Non-nil means it is the window whose mode line should be |
112 | shown as the selected window when the minibuffer is selected. */ | |
113 | ||
3dbab091 | 114 | Lisp_Object minibuf_selected_window; |
3f49fddc | 115 | |
7ab12479 | 116 | /* Non-nil means it is the window for C-M-v to scroll |
5500c422 GM |
117 | when the mini-buffer is selected. */ |
118 | ||
7ab12479 JB |
119 | Lisp_Object Vminibuf_scroll_window; |
120 | ||
121 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
5500c422 | 122 | |
7ab12479 JB |
123 | Lisp_Object Vother_window_scroll_buffer; |
124 | ||
7ab12479 | 125 | /* Non-nil means it's function to call to display temp buffers. */ |
5500c422 | 126 | |
7ab12479 JB |
127 | Lisp_Object Vtemp_buffer_show_function; |
128 | ||
e56263e5 KS |
129 | /* Non-zero means line and page scrolling on tall lines (with images) |
130 | does partial scrolling by modifying window-vscroll. */ | |
131 | ||
132 | int auto_window_vscroll_p; | |
133 | ||
cc91894c KS |
134 | /* Non-zero means to use mode-line-inactive face in all windows but the |
135 | selected-window and the minibuffer-scroll-window when the | |
136 | minibuffer is active. */ | |
137 | int mode_line_in_non_selected_windows; | |
26124d5e | 138 | |
7ab12479 | 139 | /* If a window gets smaller than either of these, it is removed. */ |
5500c422 | 140 | |
31ade731 SM |
141 | EMACS_INT window_min_height; |
142 | EMACS_INT window_min_width; | |
7ab12479 JB |
143 | |
144 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
5500c422 | 145 | |
7ab12479 JB |
146 | int pop_up_windows; |
147 | ||
44fa5b1e | 148 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
5500c422 | 149 | |
44fa5b1e | 150 | int pop_up_frames; |
7ab12479 | 151 | |
9c3da604 GM |
152 | /* Nonzero means reuse existing frames for displaying buffers. */ |
153 | ||
154 | int display_buffer_reuse_frames; | |
155 | ||
7ab12479 | 156 | /* Non-nil means use this function instead of default */ |
5500c422 | 157 | |
44fa5b1e | 158 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
159 | |
160 | /* Function to call to handle Fdisplay_buffer. */ | |
5500c422 | 161 | |
7ab12479 JB |
162 | Lisp_Object Vdisplay_buffer_function; |
163 | ||
6529ed87 GM |
164 | /* Non-nil means that Fdisplay_buffer should even the heights of windows. */ |
165 | ||
166 | Lisp_Object Veven_window_heights; | |
167 | ||
a90712c2 | 168 | /* List of buffer *names* for buffers that should have their own frames. */ |
5500c422 | 169 | |
a90712c2 RS |
170 | Lisp_Object Vspecial_display_buffer_names; |
171 | ||
172 | /* List of regexps for buffer names that should have their own frames. */ | |
5500c422 | 173 | |
a90712c2 RS |
174 | Lisp_Object Vspecial_display_regexps; |
175 | ||
176 | /* Function to pop up a special frame. */ | |
5500c422 | 177 | |
a90712c2 RS |
178 | Lisp_Object Vspecial_display_function; |
179 | ||
855d8627 | 180 | /* List of buffer *names* for buffers to appear in selected window. */ |
5500c422 | 181 | |
855d8627 RS |
182 | Lisp_Object Vsame_window_buffer_names; |
183 | ||
184 | /* List of regexps for buffer names to appear in selected window. */ | |
5500c422 | 185 | |
855d8627 RS |
186 | Lisp_Object Vsame_window_regexps; |
187 | ||
a58ec57d | 188 | /* Hook run at end of temp_output_buffer_show. */ |
5500c422 | 189 | |
a58ec57d RS |
190 | Lisp_Object Qtemp_buffer_show_hook; |
191 | ||
37962e60 | 192 | /* Fdisplay_buffer always splits the largest window |
7ab12479 | 193 | if that window is more than this high. */ |
5500c422 | 194 | |
31ade731 | 195 | EMACS_INT split_height_threshold; |
7ab12479 | 196 | |
90ab5c62 SM |
197 | /* How to split windows (horizontally/vertically/hybrid). */ |
198 | ||
199 | Lisp_Object Vsplit_window_preferred_function; | |
200 | ||
7ab12479 | 201 | /* Number of lines of continuity in scrolling by screenfuls. */ |
5500c422 | 202 | |
31ade731 | 203 | EMACS_INT next_screen_context_lines; |
7ab12479 JB |
204 | |
205 | /* Incremented for each window created. */ | |
5500c422 | 206 | |
7ab12479 JB |
207 | static int sequence_number; |
208 | ||
5b03d3c0 | 209 | /* Nonzero after init_window_once has finished. */ |
5500c422 | 210 | |
5b03d3c0 RS |
211 | static int window_initialized; |
212 | ||
543f5fb1 | 213 | /* Hook to run when window config changes. */ |
5500c422 | 214 | |
eeca6f6f SM |
215 | static Lisp_Object Qwindow_configuration_change_hook; |
216 | static Lisp_Object Vwindow_configuration_change_hook; | |
543f5fb1 | 217 | |
d0c38d63 | 218 | /* Non-nil means scroll commands try to put point |
9317a85d | 219 | at the same screen height as previously. */ |
9317a85d | 220 | |
5500c422 GM |
221 | Lisp_Object Vscroll_preserve_screen_position; |
222 | ||
0d384044 RS |
223 | /* Incremented by 1 whenever a window is deleted. */ |
224 | ||
225 | int window_deletion_count; | |
226 | ||
66d43aea LT |
227 | /* Used by the function window_scroll_pixel_based */ |
228 | ||
66fe93d1 | 229 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 230 | |
5500c422 | 231 | #if 0 /* This isn't used anywhere. */ |
91a78190 | 232 | /* Nonzero means we can split a frame even if it is "unsplittable". */ |
eddd51c2 | 233 | static int inhibit_frame_unsplittable; |
5500c422 | 234 | #endif /* 0 */ |
7d601aaa | 235 | |
31ade731 | 236 | extern EMACS_INT scroll_margin; |
9317a85d | 237 | |
dba06815 | 238 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
7ab12479 JB |
239 | \f |
240 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
fdb82f93 PJ |
241 | doc: /* Returns t if OBJECT is a window. */) |
242 | (object) | |
413430c5 | 243 | Lisp_Object object; |
7ab12479 | 244 | { |
413430c5 | 245 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
246 | } |
247 | ||
806b4d9b | 248 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
fdb82f93 | 249 | doc: /* Returns t if OBJECT is a window which is currently visible. */) |
413430c5 EN |
250 | (object) |
251 | Lisp_Object object; | |
605be8af | 252 | { |
9e571f49 | 253 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af JB |
254 | } |
255 | ||
7ab12479 JB |
256 | Lisp_Object |
257 | make_window () | |
258 | { | |
cffec418 | 259 | Lisp_Object val; |
7ab12479 | 260 | register struct window *p; |
cffec418 | 261 | |
26605be9 | 262 | p = allocate_window (); |
2a1893f4 SM |
263 | ++sequence_number; |
264 | XSETFASTINT (p->sequence_number, sequence_number); | |
949cf20f KS |
265 | XSETFASTINT (p->left_col, 0); |
266 | XSETFASTINT (p->top_line, 0); | |
267 | XSETFASTINT (p->total_lines, 0); | |
268 | XSETFASTINT (p->total_cols, 0); | |
d834a2e9 | 269 | XSETFASTINT (p->hscroll, 0); |
ea68264b | 270 | XSETFASTINT (p->min_hscroll, 0); |
949cf20f | 271 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
272 | p->start = Fmake_marker (); |
273 | p->pointm = Fmake_marker (); | |
d834a2e9 | 274 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 275 | p->frame = Qnil; |
7ab12479 JB |
276 | p->display_table = Qnil; |
277 | p->dedicated = Qnil; | |
5500c422 GM |
278 | p->pseudo_window_p = 0; |
279 | bzero (&p->cursor, sizeof (p->cursor)); | |
280 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
281 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
282 | p->desired_matrix = p->current_matrix = 0; | |
7a146de2 | 283 | p->nrows_scale_factor = p->ncols_scale_factor = 1; |
5500c422 | 284 | p->phys_cursor_type = -1; |
4b26579e | 285 | p->phys_cursor_width = -1; |
5500c422 GM |
286 | p->must_be_updated_p = 0; |
287 | XSETFASTINT (p->window_end_vpos, 0); | |
288 | XSETFASTINT (p->window_end_pos, 0); | |
289 | p->window_end_valid = Qnil; | |
290 | p->vscroll = 0; | |
cffec418 | 291 | XSETWINDOW (val, p); |
5500c422 | 292 | XSETFASTINT (p->last_point, 0); |
7bbb5782 | 293 | p->frozen_window_start_p = 0; |
6b448755 | 294 | p->last_cursor_off_p = p->cursor_off_p = 0; |
949cf20f KS |
295 | p->left_margin_cols = Qnil; |
296 | p->right_margin_cols = Qnil; | |
297 | p->left_fringe_width = Qnil; | |
298 | p->right_fringe_width = Qnil; | |
299 | p->fringes_outside_margins = Qnil; | |
300 | p->scroll_bar_width = Qnil; | |
301 | p->vertical_scroll_bar_type = Qt; | |
67492200 GM |
302 | |
303 | Vwindow_list = Qnil; | |
7ab12479 JB |
304 | return val; |
305 | } | |
306 | ||
307 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
fdb82f93 PJ |
308 | doc: /* Return the window that the cursor now appears in and commands apply to. */) |
309 | () | |
7ab12479 JB |
310 | { |
311 | return selected_window; | |
312 | } | |
313 | ||
83762ba4 | 314 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
fdb82f93 PJ |
315 | doc: /* Return the window used now for minibuffers. |
316 | If the optional argument FRAME is specified, return the minibuffer window | |
317 | used by that frame. */) | |
318 | (frame) | |
83762ba4 | 319 | Lisp_Object frame; |
7ab12479 | 320 | { |
83762ba4 | 321 | if (NILP (frame)) |
1ae1a37d | 322 | frame = selected_frame; |
b7826503 | 323 | CHECK_LIVE_FRAME (frame); |
83762ba4 | 324 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); |
7ab12479 JB |
325 | } |
326 | ||
605be8af | 327 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
6b61353c KH |
328 | doc: /* Returns non-nil if WINDOW is a minibuffer window. |
329 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 330 | (window) |
7ab12479 JB |
331 | Lisp_Object window; |
332 | { | |
333 | struct window *w = decode_window (window); | |
53bb6b99 | 334 | return MINI_WINDOW_P (w) ? Qt : Qnil; |
81e4d465 MB |
335 | } |
336 | ||
337 | ||
7ab12479 | 338 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
fdb82f93 | 339 | Spos_visible_in_window_p, 0, 3, 0, |
a0a37a6f | 340 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. |
fdb82f93 PJ |
341 | Return nil if that position is scrolled vertically out of view. |
342 | If a character is only partially visible, nil is returned, unless the | |
343 | optional argument PARTIALLY is non-nil. | |
a0a37a6f | 344 | If POS is only out of view because of horizontal scrolling, return non-nil. |
120b7781 | 345 | If POS is t, it specifies the position of the last visible glyph in WINDOW. |
0cc1039f KS |
346 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. |
347 | ||
348 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
5a857365 KS |
349 | return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), |
350 | where X and Y are the pixel coordinates relative to the top left corner | |
351 | of the window. The remaining elements are omitted if the character after | |
352 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
120b7781 | 353 | off-window at the top and bottom of the row, ROWH is the height of the |
7bbc67d2 | 354 | display row, and VPOS is the row number (0-based) containing POS. */) |
fdb82f93 | 355 | (pos, window, partially) |
5cdb3cf3 | 356 | Lisp_Object pos, window, partially; |
7ab12479 JB |
357 | { |
358 | register struct window *w; | |
7ab12479 JB |
359 | register int posint; |
360 | register struct buffer *buf; | |
9a132b1f | 361 | struct text_pos top; |
0cc1039f | 362 | Lisp_Object in_window = Qnil; |
5a857365 | 363 | int rtop, rbot, rowh, vpos, fully_p = 1; |
0cc1039f | 364 | int x, y; |
7ab12479 | 365 | |
f28b75a9 MB |
366 | w = decode_window (window); |
367 | buf = XBUFFER (w->buffer); | |
368 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
369 | ||
120b7781 KS |
370 | if (EQ (pos, Qt)) |
371 | posint = -1; | |
372 | else if (!NILP (pos)) | |
7ab12479 | 373 | { |
b7826503 | 374 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
375 | posint = XINT (pos); |
376 | } | |
f28b75a9 MB |
377 | else if (w == XWINDOW (selected_window)) |
378 | posint = PT; | |
379 | else | |
380 | posint = XMARKER (w->pointm)->charpos; | |
7ab12479 | 381 | |
0cc1039f KS |
382 | /* If position is above window start or outside buffer boundaries, |
383 | or if window start is out of range, position is not visible. */ | |
120b7781 KS |
384 | if ((EQ (pos, Qt) |
385 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
0cc1039f KS |
386 | && CHARPOS (top) >= BUF_BEGV (buf) |
387 | && CHARPOS (top) <= BUF_ZV (buf) | |
5a857365 | 388 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) |
e56263e5 | 389 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) |
0cc1039f KS |
390 | in_window = Qt; |
391 | ||
392 | if (!NILP (in_window) && !NILP (partially)) | |
5a857365 KS |
393 | { |
394 | Lisp_Object part = Qnil; | |
395 | if (!fully_p) | |
396 | part = list4 (make_number (rtop), make_number (rbot), | |
397 | make_number (rowh), make_number (vpos)); | |
398 | in_window = Fcons (make_number (x), | |
399 | Fcons (make_number (y), part)); | |
400 | } | |
401 | ||
9a132b1f | 402 | return in_window; |
7ab12479 | 403 | } |
53bb6b99 | 404 | |
536833ab | 405 | DEFUN ("window-line-height", Fwindow_line_height, |
7bbc67d2 | 406 | Swindow_line_height, 0, 2, 0, |
536833ab KS |
407 | doc: /* Return height in pixels of text line LINE in window WINDOW. |
408 | If WINDOW is nil or omitted, use selected window. | |
409 | ||
7bbc67d2 KS |
410 | Return height of current line if LINE is omitted or nil. Return height of |
411 | header or mode line if LINE is `header-line' and `mode-line'. | |
412 | Otherwise, LINE is a text line number starting from 0. A negative number | |
413 | counts from the end of the window. | |
536833ab | 414 | |
7bbc67d2 | 415 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height |
536833ab | 416 | in pixels of the visible part of the line, VPOS and YPOS are the |
68e67a4e | 417 | vertical position in lines and pixels of the line, relative to the top |
120b7781 | 418 | of the first text line, and OFFBOT is the number of off-window pixels at |
68e67a4e KS |
419 | the bottom of the text line. If there are off-window pixels at the top |
420 | of the (first) text line, YPOS is negative. | |
536833ab KS |
421 | |
422 | Return nil if window display is not up-to-date. In that case, use | |
423 | `pos-visible-in-window-p' to obtain the information. */) | |
424 | (line, window) | |
425 | Lisp_Object line, window; | |
b3a10345 KS |
426 | { |
427 | register struct window *w; | |
428 | register struct buffer *b; | |
429 | struct glyph_row *row, *end_row; | |
536833ab | 430 | int max_y, crop, i, n; |
b3a10345 KS |
431 | |
432 | w = decode_window (window); | |
433 | ||
434 | if (noninteractive | |
b3a10345 | 435 | || w->pseudo_window_p) |
7bbc67d2 | 436 | return Qnil; |
b3a10345 KS |
437 | |
438 | CHECK_BUFFER (w->buffer); | |
439 | b = XBUFFER (w->buffer); | |
440 | ||
441 | /* Fail if current matrix is not up-to-date. */ | |
442 | if (NILP (w->window_end_valid) | |
443 | || current_buffer->clip_changed | |
444 | || current_buffer->prevent_redisplay_optimizations_p | |
445 | || XFASTINT (w->last_modified) < BUF_MODIFF (b) | |
446 | || XFASTINT (w->last_overlay_modified) < BUF_OVERLAY_MODIFF (b)) | |
447 | return Qnil; | |
448 | ||
7bbc67d2 KS |
449 | if (NILP (line)) |
450 | { | |
451 | i = w->cursor.vpos; | |
452 | if (i < 0 || i >= w->current_matrix->nrows | |
453 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
454 | return Qnil; | |
455 | max_y = window_text_bottom_y (w); | |
456 | goto found_row; | |
457 | } | |
458 | ||
536833ab | 459 | if (EQ (line, Qheader_line)) |
b3a10345 | 460 | { |
536833ab KS |
461 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) |
462 | return Qnil; | |
463 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
b3a10345 KS |
464 | if (!row->enabled_p) |
465 | return Qnil; | |
536833ab KS |
466 | return list4 (make_number (row->height), |
467 | make_number (0), make_number (0), | |
468 | make_number (0)); | |
b3a10345 | 469 | } |
536833ab KS |
470 | |
471 | if (EQ (line, Qmode_line)) | |
b3a10345 | 472 | { |
536833ab KS |
473 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); |
474 | if (!row->enabled_p) | |
475 | return Qnil; | |
476 | return list4 (make_number (row->height), | |
477 | make_number (0), /* not accurate */ | |
478 | make_number (WINDOW_HEADER_LINE_HEIGHT (w) | |
479 | + window_text_bottom_y (w)), | |
480 | make_number (0)); | |
481 | } | |
b3a10345 | 482 | |
536833ab | 483 | CHECK_NUMBER (line); |
7bbc67d2 | 484 | n = XINT (line); |
536833ab KS |
485 | |
486 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
487 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
488 | max_y = window_text_bottom_y (w); | |
7bbc67d2 | 489 | i = 0; |
536833ab KS |
490 | |
491 | while ((n < 0 || i < n) | |
492 | && row <= end_row && row->enabled_p | |
493 | && row->y + row->height < max_y) | |
494 | row++, i++; | |
b3a10345 | 495 | |
536833ab KS |
496 | if (row > end_row || !row->enabled_p) |
497 | return Qnil; | |
498 | ||
7bbc67d2 | 499 | if (++n < 0) |
536833ab KS |
500 | { |
501 | if (-n > i) | |
502 | return Qnil; | |
7bbc67d2 KS |
503 | row += n; |
504 | i += n; | |
b3a10345 KS |
505 | } |
506 | ||
7bbc67d2 | 507 | found_row: |
536833ab KS |
508 | crop = max (0, (row->y + row->height) - max_y); |
509 | return list4 (make_number (row->height + min (0, row->y) - crop), | |
7bbc67d2 | 510 | make_number (i), |
536833ab KS |
511 | make_number (row->y), |
512 | make_number (crop)); | |
b3a10345 KS |
513 | } |
514 | ||
536833ab | 515 | |
7ab12479 JB |
516 | \f |
517 | static struct window * | |
518 | decode_window (window) | |
519 | register Lisp_Object window; | |
520 | { | |
265a9e55 | 521 | if (NILP (window)) |
7ab12479 JB |
522 | return XWINDOW (selected_window); |
523 | ||
b7826503 | 524 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
525 | return XWINDOW (window); |
526 | } | |
527 | ||
6b61353c KH |
528 | static struct window * |
529 | decode_any_window (window) | |
530 | register Lisp_Object window; | |
531 | { | |
532 | if (NILP (window)) | |
533 | return XWINDOW (selected_window); | |
534 | ||
535 | CHECK_WINDOW (window); | |
536 | return XWINDOW (window); | |
537 | } | |
538 | ||
7ab12479 | 539 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
c2755926 LT |
540 | doc: /* Return the buffer that WINDOW is displaying. |
541 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 542 | (window) |
7ab12479 JB |
543 | Lisp_Object window; |
544 | { | |
545 | return decode_window (window)->buffer; | |
546 | } | |
547 | ||
548 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
c85322d0 EZ |
549 | doc: /* Return the number of lines in WINDOW (including its mode line). |
550 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 551 | (window) |
7ab12479 JB |
552 | Lisp_Object window; |
553 | { | |
6b61353c | 554 | return decode_any_window (window)->total_lines; |
7ab12479 JB |
555 | } |
556 | ||
557 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
fdb82f93 PJ |
558 | doc: /* Return the number of display columns in WINDOW. |
559 | This is the width that is usable columns available for text in WINDOW. | |
560 | If you want to find out how many columns WINDOW takes up, | |
561 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */) | |
562 | (window) | |
7ab12479 JB |
563 | Lisp_Object window; |
564 | { | |
6b61353c | 565 | return make_number (window_box_text_cols (decode_any_window (window))); |
7ab12479 JB |
566 | } |
567 | ||
35ea56c9 MR |
568 | DEFUN ("window-full-width-p", Fwindow_full_width_p, Swindow_full_width_p, 0, 1, 0, |
569 | doc: /* Return t if WINDOW is as wide as its frame. | |
570 | WINDOW defaults to the selected window. */) | |
571 | (window) | |
572 | Lisp_Object window; | |
573 | { | |
574 | return WINDOW_FULL_WIDTH_P (decode_any_window (window)) ? Qt : Qnil; | |
575 | } | |
576 | ||
7ab12479 | 577 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 EZ |
578 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
579 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 580 | (window) |
7ab12479 JB |
581 | Lisp_Object window; |
582 | { | |
583 | return decode_window (window)->hscroll; | |
584 | } | |
585 | ||
586 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 | 587 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
a0a37a6f | 588 | Return NCOL. NCOL should be zero or positive. |
ebadb1e4 EZ |
589 | |
590 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 591 | window so that the location of point moves off-window. */) |
fdb82f93 | 592 | (window, ncol) |
ea68264b | 593 | Lisp_Object window, ncol; |
7ab12479 | 594 | { |
ea68264b GM |
595 | struct window *w = decode_window (window); |
596 | int hscroll; | |
7ab12479 | 597 | |
b7826503 | 598 | CHECK_NUMBER (ncol); |
ea68264b | 599 | hscroll = max (0, XINT (ncol)); |
177c0ea7 | 600 | |
ea68264b GM |
601 | /* Prevent redisplay shortcuts when changing the hscroll. */ |
602 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 603 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
177c0ea7 | 604 | |
c67fa410 | 605 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
606 | return ncol; |
607 | } | |
608 | ||
190eb263 RS |
609 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
610 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 611 | doc: /* Return WINDOW's redisplay end trigger value. |
c85322d0 | 612 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
613 | See `set-window-redisplay-end-trigger' for more information. */) |
614 | (window) | |
190eb263 RS |
615 | Lisp_Object window; |
616 | { | |
617 | return decode_window (window)->redisplay_end_trigger; | |
618 | } | |
619 | ||
620 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
621 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
622 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
623 | VALUE should be a buffer position (typically a marker) or nil. | |
624 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
625 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
626 | with two arguments: WINDOW, and the end trigger value. | |
627 | Afterwards the end-trigger value is reset to nil. */) | |
628 | (window, value) | |
190eb263 RS |
629 | register Lisp_Object window, value; |
630 | { | |
631 | register struct window *w; | |
632 | ||
633 | w = decode_window (window); | |
634 | w->redisplay_end_trigger = value; | |
635 | return value; | |
636 | } | |
637 | ||
7ab12479 | 638 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 PJ |
639 | doc: /* Return a list of the edge coordinates of WINDOW. |
640 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
c99a9eb3 RS |
641 | RIGHT is one more than the rightmost column occupied by WINDOW, |
642 | and BOTTOM is one more than the bottommost row occupied by WINDOW. | |
643 | The edges include the space used by the window's scroll bar, | |
644 | display margins, fringes, header line, and mode line, if it has them. | |
645 | To get the edges of the actual text area, use `window-inside-edges'. */) | |
fdb82f93 | 646 | (window) |
7ab12479 JB |
647 | Lisp_Object window; |
648 | { | |
6b61353c | 649 | register struct window *w = decode_any_window (window); |
7ab12479 | 650 | |
949cf20f KS |
651 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
652 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), | |
653 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), | |
654 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), | |
655 | Qnil)))); | |
7ab12479 JB |
656 | } |
657 | ||
c99a9eb3 RS |
658 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
659 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
660 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
661 | RIGHT is one more than the rightmost x position occupied by WINDOW, | |
662 | and BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
663 | The pixel edges include the space used by the window's scroll bar, | |
664 | display margins, fringes, header line, and mode line, if it has them. | |
665 | To get the edges of the actual text area, use `window-inside-pixel-edges'. */) | |
666 | (window) | |
667 | Lisp_Object window; | |
668 | { | |
6b61353c | 669 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
670 | |
671 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w)), | |
672 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w)), | |
673 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w)), | |
674 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w)), | |
675 | Qnil)))); | |
676 | } | |
677 | ||
678 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, | |
679 | doc: /* Return a list of the edge coordinates of WINDOW. | |
680 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
681 | RIGHT is one more than the rightmost column used by text in WINDOW, | |
682 | and BOTTOM is one more than the bottommost row used by text in WINDOW. | |
683 | The inside edges do not include the space used by the window's scroll bar, | |
684 | display margins, fringes, header line, and/or mode line. */) | |
685 | (window) | |
686 | Lisp_Object window; | |
687 | { | |
6b61353c | 688 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
689 | |
690 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w) | |
691 | + WINDOW_LEFT_MARGIN_COLS (w) | |
692 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
693 | make_number (WINDOW_TOP_EDGE_LINE (w) | |
694 | + WINDOW_HEADER_LINE_LINES (w)), | |
f3fbdb1f | 695 | make_number (WINDOW_BOX_RIGHT_EDGE_COL (w) |
c99a9eb3 RS |
696 | - WINDOW_RIGHT_MARGIN_COLS (w) |
697 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
698 | make_number (WINDOW_BOTTOM_EDGE_LINE (w) | |
699 | - WINDOW_MODE_LINE_LINES (w))); | |
700 | } | |
701 | ||
702 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
a0a37a6f | 703 | doc: /* Return a list of the edge pixel coordinates of WINDOW. |
c99a9eb3 RS |
704 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. |
705 | RIGHT is one more than the rightmost x position used by text in WINDOW, | |
706 | and BOTTOM is one more than the bottommost y position used by text in WINDOW. | |
707 | The inside edges do not include the space used by the window's scroll bar, | |
708 | display margins, fringes, header line, and/or mode line. */) | |
709 | (window) | |
710 | Lisp_Object window; | |
711 | { | |
6b61353c | 712 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
713 | |
714 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
715 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
716 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
717 | make_number (WINDOW_TOP_EDGE_Y (w) | |
718 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
f3fbdb1f | 719 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) |
c99a9eb3 RS |
720 | - WINDOW_RIGHT_MARGIN_WIDTH (w) |
721 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
722 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
723 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
724 | } | |
725 | ||
fbad6f9a | 726 | /* Test if the character at column *X, row *Y is within window W. |
341f3858 | 727 | If it is not, return ON_NOTHING; |
d5783c40 JB |
728 | if it is in the window's text area, |
729 | set *x and *y to its location relative to the upper left corner | |
730 | of the window, and | |
341f3858 KS |
731 | return ON_TEXT; |
732 | if it is on the window's modeline, return ON_MODE_LINE; | |
d5783c40 | 733 | if it is on the border between the window and its right sibling, |
341f3858 | 734 | return ON_VERTICAL_BORDER. |
6487f669 RS |
735 | if it is on a scroll bar, |
736 | return ON_SCROLL_BAR. | |
341f3858 | 737 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 738 | if it is in left or right fringe of the window, |
341f3858 KS |
739 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE, and convert *X and *Y |
740 | to window-relative coordinates; | |
49b996e7 | 741 | if it is in the marginal area to the left/right of the window, |
341f3858 KS |
742 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN, and convert *X and *Y |
743 | to window-relative coordinates. | |
5500c422 GM |
744 | |
745 | X and Y are frame relative pixel coordinates. */ | |
746 | ||
7442878f | 747 | static enum window_part |
d5783c40 JB |
748 | coordinates_in_window (w, x, y) |
749 | register struct window *w; | |
750 | register int *x, *y; | |
751 | { | |
b0228ace GM |
752 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
753 | int left_x, right_x, top_y, bottom_y; | |
7442878f | 754 | enum window_part part; |
949cf20f KS |
755 | int ux = FRAME_COLUMN_WIDTH (f); |
756 | int x0 = WINDOW_LEFT_EDGE_X (w); | |
757 | int x1 = WINDOW_RIGHT_EDGE_X (w); | |
dad75588 GM |
758 | /* The width of the area where the vertical line can be dragged. |
759 | (Between mode lines for instance. */ | |
760 | int grabbable_width = ux; | |
949cf20f | 761 | int lmargin_width, rmargin_width, text_left, text_right; |
b0228ace | 762 | |
466539bc EZ |
763 | /* In what's below, we subtract 1 when computing right_x because we |
764 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
765 | if (w->pseudo_window_p) |
766 | { | |
767 | left_x = 0; | |
949cf20f KS |
768 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
769 | top_y = WINDOW_TOP_EDGE_Y (w); | |
770 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 GM |
771 | } |
772 | else | |
773 | { | |
949cf20f KS |
774 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
775 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
776 | top_y = WINDOW_TOP_EDGE_Y (w); | |
777 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 | 778 | } |
37962e60 | 779 | |
949cf20f KS |
780 | /* Outside any interesting row? */ |
781 | if (*y < top_y || *y >= bottom_y) | |
782 | return ON_NOTHING; | |
783 | ||
1cb794ba GM |
784 | /* On the mode line or header line? If it's near the start of |
785 | the mode or header line of window that's has a horizontal | |
786 | sibling, say it's on the vertical line. That's to be able | |
787 | to resize windows horizontally in case we're using toolkit | |
788 | scroll bars. */ | |
b0228ace | 789 | |
1cb794ba | 790 | if (WINDOW_WANTS_MODELINE_P (w) |
6b61353c | 791 | && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)) |
1cb794ba | 792 | { |
949cf20f KS |
793 | part = ON_MODE_LINE; |
794 | ||
795 | header_vertical_border_check: | |
b0228ace GM |
796 | /* We're somewhere on the mode line. We consider the place |
797 | between mode lines of horizontally adjacent mode lines | |
798 | as the vertical border. If scroll bars on the left, | |
799 | return the right window. */ | |
949cf20f KS |
800 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) |
801 | || WINDOW_RIGHTMOST_P (w)) | |
b0228ace | 802 | { |
1ea40aa2 | 803 | if (!WINDOW_LEFTMOST_P (w) && eabs (*x - x0) < grabbable_width) |
f8c62b70 | 804 | { |
3f489dc7 KS |
805 | /* Convert X and Y to window relative coordinates. |
806 | Vertical border is at the left edge of window. */ | |
f8c62b70 NR |
807 | *x = max (0, *x - x0); |
808 | *y -= top_y; | |
809 | return ON_VERTICAL_BORDER; | |
810 | } | |
b0228ace | 811 | } |
79fd290e | 812 | else |
b0228ace | 813 | { |
1ea40aa2 | 814 | if (eabs (*x - x1) < grabbable_width) |
f8c62b70 | 815 | { |
3f489dc7 KS |
816 | /* Convert X and Y to window relative coordinates. |
817 | Vertical border is at the right edge of window. */ | |
f8c62b70 NR |
818 | *x = min (x1, *x) - x0; |
819 | *y -= top_y; | |
820 | return ON_VERTICAL_BORDER; | |
821 | } | |
b0228ace | 822 | } |
949cf20f | 823 | |
cb639b8f KS |
824 | if (*x < x0 || *x >= x1) |
825 | return ON_NOTHING; | |
826 | ||
a5303820 KS |
827 | /* Convert X and Y to window relative coordinates. |
828 | Mode line starts at left edge of window. */ | |
829 | *x -= x0; | |
830 | *y -= top_y; | |
949cf20f | 831 | return part; |
b0228ace | 832 | } |
949cf20f KS |
833 | |
834 | if (WINDOW_WANTS_HEADER_LINE_P (w) | |
949cf20f | 835 | && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) |
1cb794ba | 836 | { |
949cf20f KS |
837 | part = ON_HEADER_LINE; |
838 | goto header_vertical_border_check; | |
1cb794ba | 839 | } |
949cf20f | 840 | |
cb639b8f KS |
841 | if (*x < x0 || *x >= x1) |
842 | return ON_NOTHING; | |
843 | ||
949cf20f KS |
844 | /* Outside any interesting column? */ |
845 | if (*x < left_x || *x > right_x) | |
4d1add72 KS |
846 | { |
847 | *y -= top_y; | |
848 | return ON_SCROLL_BAR; | |
849 | } | |
949cf20f KS |
850 | |
851 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
852 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 853 | |
949cf20f KS |
854 | text_left = window_box_left (w, TEXT_AREA); |
855 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
856 | ||
857 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 858 | { |
447e9da0 | 859 | if (!w->pseudo_window_p |
949cf20f | 860 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 861 | && !WINDOW_RIGHTMOST_P (w) |
1ea40aa2 | 862 | && (eabs (*x - right_x) < grabbable_width)) |
f8c62b70 | 863 | { |
3f489dc7 KS |
864 | /* Convert X and Y to window relative coordinates. |
865 | Vertical border is at the right edge of window. */ | |
f8c62b70 NR |
866 | *x = min (right_x, *x) - left_x; |
867 | *y -= top_y; | |
868 | return ON_VERTICAL_BORDER; | |
869 | } | |
fbad6f9a | 870 | } |
447e9da0 GM |
871 | else |
872 | { | |
873 | /* Need to say "*x > right_x" rather than >=, since on character | |
874 | terminals, the vertical line's x coordinate is right_x. */ | |
949cf20f KS |
875 | if (!w->pseudo_window_p |
876 | && !WINDOW_RIGHTMOST_P (w) | |
877 | && *x > right_x - ux) | |
b0228ace GM |
878 | { |
879 | /* On the border on the right side of the window? Assume that | |
880 | this area begins at RIGHT_X minus a canonical char width. */ | |
f8c62b70 NR |
881 | *x = min (right_x, *x) - left_x; |
882 | *y -= top_y; | |
949cf20f | 883 | return ON_VERTICAL_BORDER; |
b0228ace | 884 | } |
447e9da0 | 885 | } |
b0228ace | 886 | |
949cf20f KS |
887 | if (*x < text_left) |
888 | { | |
889 | if (lmargin_width > 0 | |
890 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
891 | ? (*x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) | |
892 | : (*x < left_x + lmargin_width))) | |
a5303820 | 893 | { |
6b61353c | 894 | *x -= left_x; |
a5303820 KS |
895 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) |
896 | *x -= WINDOW_LEFT_FRINGE_WIDTH (w); | |
897 | *y -= top_y; | |
898 | return ON_LEFT_MARGIN; | |
899 | } | |
949cf20f KS |
900 | |
901 | /* Convert X and Y to window-relative pixel coordinates. */ | |
902 | *x -= left_x; | |
903 | *y -= top_y; | |
904 | return ON_LEFT_FRINGE; | |
905 | } | |
906 | ||
907 | if (*x >= text_right) | |
908 | { | |
909 | if (rmargin_width > 0 | |
910 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
911 | ? (*x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) | |
912 | : (*x >= right_x - rmargin_width))) | |
a5303820 | 913 | { |
66d41723 KS |
914 | *x -= right_x - rmargin_width; |
915 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
916 | *x += WINDOW_RIGHT_FRINGE_WIDTH (w); | |
a5303820 KS |
917 | *y -= top_y; |
918 | return ON_RIGHT_MARGIN; | |
919 | } | |
949cf20f KS |
920 | |
921 | /* Convert X and Y to window-relative pixel coordinates. */ | |
922 | *x -= left_x + WINDOW_LEFT_FRINGE_WIDTH (w); | |
923 | *y -= top_y; | |
924 | return ON_RIGHT_FRINGE; | |
925 | } | |
926 | ||
927 | /* Everything special ruled out - must be on text area */ | |
66d41723 | 928 | *x -= text_left; |
949cf20f KS |
929 | *y -= top_y; |
930 | return ON_TEXT; | |
d5783c40 JB |
931 | } |
932 | ||
b0228ace | 933 | |
d5783c40 | 934 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
935 | Scoordinates_in_window_p, 2, 2, 0, |
936 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
937 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
938 | measured in characters from the upper-left corner of the frame. | |
939 | \(0 . 0) denotes the character in the upper left corner of the | |
940 | frame. | |
941 | If COORDINATES are in the text portion of WINDOW, | |
942 | the coordinates relative to the window are returned. | |
943 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
944 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
945 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
946 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 947 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
948 | `vertical-line' is returned. |
949 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
950 | or `right-margin' is returned. */) | |
fdb82f93 | 951 | (coordinates, window) |
d5783c40 JB |
952 | register Lisp_Object coordinates, window; |
953 | { | |
5500c422 GM |
954 | struct window *w; |
955 | struct frame *f; | |
d5783c40 | 956 | int x, y; |
5500c422 | 957 | Lisp_Object lx, ly; |
d5783c40 | 958 | |
6b61353c | 959 | CHECK_WINDOW (window); |
5500c422 GM |
960 | w = XWINDOW (window); |
961 | f = XFRAME (w->frame); | |
b7826503 | 962 | CHECK_CONS (coordinates); |
5500c422 GM |
963 | lx = Fcar (coordinates); |
964 | ly = Fcdr (coordinates); | |
b7826503 PJ |
965 | CHECK_NUMBER_OR_FLOAT (lx); |
966 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
967 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
968 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 GM |
969 | |
970 | switch (coordinates_in_window (w, &x, &y)) | |
d5783c40 | 971 | { |
7442878f | 972 | case ON_NOTHING: |
d5783c40 JB |
973 | return Qnil; |
974 | ||
7442878f GM |
975 | case ON_TEXT: |
976 | /* X and Y are now window relative pixel coordinates. Convert | |
977 | them to canonical char units before returning them. */ | |
949cf20f KS |
978 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
979 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 980 | |
7442878f | 981 | case ON_MODE_LINE: |
d5783c40 | 982 | return Qmode_line; |
37962e60 | 983 | |
7442878f | 984 | case ON_VERTICAL_BORDER: |
e5d77022 | 985 | return Qvertical_line; |
d5783c40 | 986 | |
7442878f | 987 | case ON_HEADER_LINE: |
045dee35 | 988 | return Qheader_line; |
5500c422 | 989 | |
7442878f GM |
990 | case ON_LEFT_FRINGE: |
991 | return Qleft_fringe; | |
177c0ea7 | 992 | |
7442878f GM |
993 | case ON_RIGHT_FRINGE: |
994 | return Qright_fringe; | |
fbad6f9a | 995 | |
49b996e7 GM |
996 | case ON_LEFT_MARGIN: |
997 | return Qleft_margin; | |
177c0ea7 | 998 | |
49b996e7 GM |
999 | case ON_RIGHT_MARGIN: |
1000 | return Qright_margin; | |
1001 | ||
6487f669 RS |
1002 | case ON_SCROLL_BAR: |
1003 | /* Historically we are supposed to return nil in this case. */ | |
1004 | return Qnil; | |
1005 | ||
d5783c40 JB |
1006 | default: |
1007 | abort (); | |
1008 | } | |
1009 | } | |
1010 | ||
67492200 GM |
1011 | |
1012 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
1013 | Check if window W contains coordinates specified by USER_DATA which |
1014 | is actually a pointer to a struct check_window_data CW. | |
1015 | ||
1016 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
1017 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 1018 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
1019 | zero from this function to stop iterating over windows. */ |
1020 | ||
1021 | struct check_window_data | |
1022 | { | |
1023 | Lisp_Object *window; | |
341f3858 KS |
1024 | int *x, *y; |
1025 | enum window_part *part; | |
f95464e4 | 1026 | }; |
67492200 GM |
1027 | |
1028 | static int | |
f95464e4 | 1029 | check_window_containing (w, user_data) |
67492200 | 1030 | struct window *w; |
f95464e4 | 1031 | void *user_data; |
67492200 | 1032 | { |
f95464e4 | 1033 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
1034 | enum window_part found; |
1035 | int continue_p = 1; | |
67492200 | 1036 | |
f95464e4 | 1037 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1038 | if (found != ON_NOTHING) |
67492200 | 1039 | { |
341f3858 | 1040 | *cw->part = found; |
f95464e4 | 1041 | XSETWINDOW (*cw->window, w); |
7442878f | 1042 | continue_p = 0; |
67492200 | 1043 | } |
177c0ea7 | 1044 | |
7442878f | 1045 | return continue_p; |
67492200 GM |
1046 | } |
1047 | ||
1048 | ||
5500c422 | 1049 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1050 | return it as a Lisp_Object. |
1051 | ||
1052 | If X, Y is on one of the window's special `window_part' elements, | |
1053 | set *PART to the id of that element, and return X and Y converted | |
1054 | to window relative coordinates in WX and WY. | |
1055 | ||
341f3858 | 1056 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1057 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1058 | ||
1059 | This function was previously implemented with a loop cycling over | |
1060 | windows with Fnext_window, and starting with the frame's selected | |
1061 | window. It turned out that this doesn't work with an | |
1062 | implementation of next_window using Vwindow_list, because | |
1063 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1064 | tree of F when this function is called asynchronously from | |
1065 | note_mouse_highlight. The original loop didn't terminate in this | |
1066 | case. */ | |
5500c422 | 1067 | |
7ab12479 | 1068 | Lisp_Object |
949cf20f | 1069 | window_from_coordinates (f, x, y, part, wx, wy, tool_bar_p) |
67492200 | 1070 | struct frame *f; |
7ab12479 | 1071 | int x, y; |
341f3858 | 1072 | enum window_part *part; |
949cf20f | 1073 | int *wx, *wy; |
9ea173e8 | 1074 | int tool_bar_p; |
7ab12479 | 1075 | { |
67492200 | 1076 | Lisp_Object window; |
f95464e4 | 1077 | struct check_window_data cw; |
341f3858 KS |
1078 | enum window_part dummy; |
1079 | ||
1080 | if (part == 0) | |
1081 | part = &dummy; | |
5500c422 | 1082 | |
67492200 | 1083 | window = Qnil; |
f95464e4 GM |
1084 | cw.window = &window, cw.x = &x, cw.y = &y; cw.part = part; |
1085 | foreach_window (f, check_window_containing, &cw); | |
177c0ea7 | 1086 | |
67492200 GM |
1087 | /* If not found above, see if it's in the tool bar window, if a tool |
1088 | bar exists. */ | |
1089 | if (NILP (window) | |
1090 | && tool_bar_p | |
1091 | && WINDOWP (f->tool_bar_window) | |
949cf20f | 1092 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 |
7442878f GM |
1093 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), &x, &y) |
1094 | != ON_NOTHING)) | |
5500c422 | 1095 | { |
341f3858 | 1096 | *part = ON_TEXT; |
67492200 | 1097 | window = f->tool_bar_window; |
5500c422 | 1098 | } |
37962e60 | 1099 | |
949cf20f KS |
1100 | if (wx) *wx = x; |
1101 | if (wy) *wy = y; | |
1102 | ||
67492200 | 1103 | return window; |
7ab12479 JB |
1104 | } |
1105 | ||
ab17c3f2 | 1106 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 PJ |
1107 | doc: /* Return window containing coordinates X and Y on FRAME. |
1108 | If omitted, FRAME defaults to the currently selected frame. | |
1109 | The top left corner of the frame is considered to be row 0, | |
1110 | column 0. */) | |
1111 | (x, y, frame) | |
1112 | Lisp_Object x, y, frame; | |
7ab12479 | 1113 | { |
5500c422 | 1114 | struct frame *f; |
7ab12479 | 1115 | |
44fa5b1e | 1116 | if (NILP (frame)) |
1ae1a37d | 1117 | frame = selected_frame; |
b7826503 | 1118 | CHECK_LIVE_FRAME (frame); |
5500c422 | 1119 | f = XFRAME (frame); |
7ab12479 | 1120 | |
5500c422 | 1121 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1122 | CHECK_NUMBER_OR_FLOAT (x); |
1123 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1124 | |
177c0ea7 | 1125 | return window_from_coordinates (f, |
2c77cf3b RS |
1126 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1127 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1128 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1129 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
949cf20f | 1130 | 0, 0, 0, 0); |
7ab12479 JB |
1131 | } |
1132 | ||
1133 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1134 | doc: /* Return current value of point in WINDOW. |
c85322d0 EZ |
1135 | WINDOW defaults to the selected window. |
1136 | ||
fdb82f93 PJ |
1137 | For a nonselected window, this is the value point would have |
1138 | if that window were selected. | |
1139 | ||
1140 | Note that, when WINDOW is the selected window and its buffer | |
1141 | is also currently selected, the value returned is the same as (point). | |
1142 | It would be more strictly correct to return the `top-level' value | |
1143 | of point, outside of any save-excursion forms. | |
1144 | But that is hard to define. */) | |
1145 | (window) | |
7ab12479 JB |
1146 | Lisp_Object window; |
1147 | { | |
1148 | register struct window *w = decode_window (window); | |
1149 | ||
1150 | if (w == XWINDOW (selected_window) | |
1151 | && current_buffer == XBUFFER (w->buffer)) | |
1152 | return Fpoint (); | |
1153 | return Fmarker_position (w->pointm); | |
1154 | } | |
1155 | ||
1156 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1157 | doc: /* Return position at which display currently starts in WINDOW. |
c85322d0 | 1158 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
1159 | This is updated by redisplay or by calling `set-window-start'. */) |
1160 | (window) | |
7ab12479 JB |
1161 | Lisp_Object window; |
1162 | { | |
1163 | return Fmarker_position (decode_window (window)->start); | |
1164 | } | |
1165 | ||
8646118f RS |
1166 | /* This is text temporarily removed from the doc string below. |
1167 | ||
fdb82f93 PJ |
1168 | This function returns nil if the position is not currently known. |
1169 | That happens when redisplay is preempted and doesn't finish. | |
1170 | If in that case you want to compute where the end of the window would | |
1171 | have been if redisplay had finished, do this: | |
1172 | (save-excursion | |
1173 | (goto-char (window-start window)) | |
1174 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1175 | (point))") */ |
1176 | ||
478292ed | 1177 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1178 | doc: /* Return position at which display currently ends in WINDOW. |
c85322d0 | 1179 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
1180 | This is updated by redisplay, when it runs to completion. |
1181 | Simply changing the buffer text or setting `window-start' | |
1182 | does not update this value. | |
a0a37a6f LT |
1183 | Return nil if there is no recorded value. \(This can happen if the |
1184 | last redisplay of WINDOW was preempted, and did not finish.) | |
fdb82f93 PJ |
1185 | If UPDATE is non-nil, compute the up-to-date position |
1186 | if it isn't already recorded. */) | |
1187 | (window, update) | |
478292ed | 1188 | Lisp_Object window, update; |
7ab12479 JB |
1189 | { |
1190 | Lisp_Object value; | |
1191 | struct window *w = decode_window (window); | |
5a41ab94 | 1192 | Lisp_Object buf; |
31790df3 | 1193 | struct buffer *b; |
5a41ab94 RS |
1194 | |
1195 | buf = w->buffer; | |
b7826503 | 1196 | CHECK_BUFFER (buf); |
b3a10345 | 1197 | b = XBUFFER (buf); |
5a41ab94 | 1198 | |
8646118f | 1199 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1200 | /* If we don't know the end position, return nil. |
1201 | The user can compute it with vertical-motion if he wants to. | |
1202 | It would be nicer to do it automatically, | |
1203 | but that's so slow that it would probably bother people. */ | |
1204 | if (NILP (w->window_end_valid)) | |
1205 | return Qnil; | |
8646118f | 1206 | #endif |
7250968e | 1207 | |
478292ed RS |
1208 | if (! NILP (update) |
1209 | && ! (! NILP (w->window_end_valid) | |
dfc265a3 | 1210 | && XFASTINT (w->last_modified) >= BUF_MODIFF (b) |
4c9564e8 | 1211 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (b)) |
41791a20 | 1212 | && !noninteractive) |
478292ed | 1213 | { |
cbc099e5 GM |
1214 | struct text_pos startp; |
1215 | struct it it; | |
b3a10345 KS |
1216 | struct buffer *old_buffer = NULL; |
1217 | ||
1218 | /* Cannot use Fvertical_motion because that function doesn't | |
1219 | cope with variable-height lines. */ | |
1220 | if (b != current_buffer) | |
1221 | { | |
1222 | old_buffer = current_buffer; | |
1223 | set_buffer_internal (b); | |
1224 | } | |
2d6d9df0 GM |
1225 | |
1226 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1227 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1228 | `-l' containing a call to `rmail' with subsequent other |
1229 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1230 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 1231 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 1232 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 1233 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 1234 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1235 | else |
cbc099e5 GM |
1236 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
1237 | ||
cbc099e5 GM |
1238 | start_display (&it, w, startp); |
1239 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1240 | if (it.current_y < it.last_visible_y) |
1241 | move_it_past_eol (&it); | |
cbc099e5 | 1242 | value = make_number (IT_CHARPOS (it)); |
177c0ea7 | 1243 | |
99593a9d GM |
1244 | if (old_buffer) |
1245 | set_buffer_internal (old_buffer); | |
478292ed RS |
1246 | } |
1247 | else | |
b3a10345 | 1248 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1249 | |
1250 | return value; | |
1251 | } | |
1252 | ||
1253 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
a0a37a6f LT |
1254 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
1255 | Return POS. */) | |
fdb82f93 | 1256 | (window, pos) |
7ab12479 JB |
1257 | Lisp_Object window, pos; |
1258 | { | |
1259 | register struct window *w = decode_window (window); | |
1260 | ||
b7826503 | 1261 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
1262 | if (w == XWINDOW (selected_window) |
1263 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
1264 | Fgoto_char (pos); |
1265 | else | |
1266 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 1267 | |
0685cb3c GM |
1268 | /* We have to make sure that redisplay updates the window to show |
1269 | the new value of point. */ | |
1270 | if (!EQ (window, selected_window)) | |
799417bd | 1271 | ++windows_or_buffers_changed; |
177c0ea7 | 1272 | |
7ab12479 JB |
1273 | return pos; |
1274 | } | |
1275 | ||
1276 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1277 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
a0a37a6f | 1278 | Return POS. |
fdb82f93 PJ |
1279 | Optional third arg NOFORCE non-nil inhibits next redisplay |
1280 | from overriding motion of point in order to display at this exact start. */) | |
1281 | (window, pos, noforce) | |
7ab12479 JB |
1282 | Lisp_Object window, pos, noforce; |
1283 | { | |
1284 | register struct window *w = decode_window (window); | |
1285 | ||
b7826503 | 1286 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
1287 | set_marker_restricted (w->start, pos, w->buffer); |
1288 | /* this is not right, but much easier than doing what is right. */ | |
1289 | w->start_at_line_beg = Qnil; | |
265a9e55 | 1290 | if (NILP (noforce)) |
7ab12479 JB |
1291 | w->force_start = Qt; |
1292 | w->update_mode_line = Qt; | |
d834a2e9 | 1293 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1294 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
1295 | if (!EQ (window, selected_window)) |
1296 | windows_or_buffers_changed++; | |
ce7fae7d | 1297 | |
7ab12479 JB |
1298 | return pos; |
1299 | } | |
1300 | ||
1301 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
1302 | 1, 1, 0, | |
fdb82f93 PJ |
1303 | doc: /* Return WINDOW's dedicated object, usually t or nil. |
1304 | See also `set-window-dedicated-p'. */) | |
1305 | (window) | |
7ab12479 JB |
1306 | Lisp_Object window; |
1307 | { | |
1308 | return decode_window (window)->dedicated; | |
1309 | } | |
1310 | ||
d207b766 RS |
1311 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1312 | Sset_window_dedicated_p, 2, 2, 0, | |
fdb82f93 PJ |
1313 | doc: /* Control whether WINDOW is dedicated to the buffer it displays. |
1314 | If it is dedicated, Emacs will not automatically change | |
1315 | which buffer appears in it. | |
1316 | The second argument is the new value for the dedication flag; | |
1317 | non-nil means yes. */) | |
1318 | (window, arg) | |
1319 | Lisp_Object window, arg; | |
7ab12479 JB |
1320 | { |
1321 | register struct window *w = decode_window (window); | |
1322 | ||
2d0834cc | 1323 | w->dedicated = arg; |
7ab12479 JB |
1324 | |
1325 | return w->dedicated; | |
1326 | } | |
1327 | ||
1328 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
1329 | 0, 1, 0, | |
c85322d0 EZ |
1330 | doc: /* Return the display-table that WINDOW is using. |
1331 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 1332 | (window) |
7ab12479 JB |
1333 | Lisp_Object window; |
1334 | { | |
1335 | return decode_window (window)->display_table; | |
1336 | } | |
1337 | ||
5500c422 GM |
1338 | /* Get the display table for use on window W. This is either W's |
1339 | display table or W's buffer's display table. Ignore the specified | |
1340 | tables if they are not valid; if no valid table is specified, | |
1341 | return 0. */ | |
7ab12479 | 1342 | |
319315f1 | 1343 | struct Lisp_Char_Table * |
7ab12479 JB |
1344 | window_display_table (w) |
1345 | struct window *w; | |
1346 | { | |
c756cdbe GM |
1347 | struct Lisp_Char_Table *dp = NULL; |
1348 | ||
1349 | if (DISP_TABLE_P (w->display_table)) | |
1350 | dp = XCHAR_TABLE (w->display_table); | |
1351 | else if (BUFFERP (w->buffer)) | |
1352 | { | |
1353 | struct buffer *b = XBUFFER (w->buffer); | |
177c0ea7 | 1354 | |
c756cdbe GM |
1355 | if (DISP_TABLE_P (b->display_table)) |
1356 | dp = XCHAR_TABLE (b->display_table); | |
1357 | else if (DISP_TABLE_P (Vstandard_display_table)) | |
1358 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1359 | } | |
171d003c | 1360 | |
c756cdbe | 1361 | return dp; |
7ab12479 JB |
1362 | } |
1363 | ||
3a2712f9 | 1364 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 PJ |
1365 | doc: /* Set WINDOW's display-table to TABLE. */) |
1366 | (window, table) | |
7ab12479 JB |
1367 | register Lisp_Object window, table; |
1368 | { | |
1369 | register struct window *w; | |
7ab12479 JB |
1370 | |
1371 | w = decode_window (window); | |
1372 | w->display_table = table; | |
1373 | return table; | |
1374 | } | |
1375 | \f | |
1376 | /* Record info on buffer window w is displaying | |
1377 | when it is about to cease to display that buffer. */ | |
dfcf069d | 1378 | static void |
7ab12479 JB |
1379 | unshow_buffer (w) |
1380 | register struct window *w; | |
1381 | { | |
12cae7c0 | 1382 | Lisp_Object buf; |
b73ea88e | 1383 | struct buffer *b; |
7ab12479 | 1384 | |
12cae7c0 | 1385 | buf = w->buffer; |
b73ea88e RS |
1386 | b = XBUFFER (buf); |
1387 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1388 | abort (); |
1389 | ||
573f41ab | 1390 | #if 0 |
7ab12479 JB |
1391 | if (w == XWINDOW (selected_window) |
1392 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1393 | /* Do this except when the selected window's buffer | |
1394 | is being removed from some other window. */ | |
573f41ab RS |
1395 | #endif |
1396 | /* last_window_start records the start position that this buffer | |
1397 | had in the last window to be disconnected from it. | |
1398 | Now that this statement is unconditional, | |
1399 | it is possible for the buffer to be displayed in the | |
1400 | selected window, while last_window_start reflects another | |
1401 | window which was recently showing the same buffer. | |
1402 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1403 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1404 | |
1405 | /* Point in the selected window's buffer | |
1406 | is actually stored in that buffer, and the window's pointm isn't used. | |
1407 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1408 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1409 | /* This line helps to fix Horsley's testbug.el bug. */ | |
8801a864 KR |
1410 | && !(WINDOWP (b->last_selected_window) |
1411 | && w != XWINDOW (b->last_selected_window) | |
719eaeb1 | 1412 | && EQ (buf, XWINDOW (b->last_selected_window)->buffer))) |
b73ea88e RS |
1413 | temp_set_point_both (b, |
1414 | clip_to_bounds (BUF_BEGV (b), | |
1415 | XMARKER (w->pointm)->charpos, | |
1416 | BUF_ZV (b)), | |
1417 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1418 | marker_byte_position (w->pointm), | |
1419 | BUF_ZV_BYTE (b))); | |
177c0ea7 | 1420 | |
8801a864 KR |
1421 | if (WINDOWP (b->last_selected_window) |
1422 | && w == XWINDOW (b->last_selected_window)) | |
719eaeb1 | 1423 | b->last_selected_window = Qnil; |
7ab12479 JB |
1424 | } |
1425 | ||
1426 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 1427 | static void |
7ab12479 JB |
1428 | replace_window (old, replacement) |
1429 | Lisp_Object old, replacement; | |
1430 | { | |
1431 | register Lisp_Object tem; | |
1432 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
1433 | ||
44fa5b1e JB |
1434 | /* If OLD is its frame's root_window, then replacement is the new |
1435 | root_window for that frame. */ | |
7ab12479 | 1436 | |
7f4161e0 | 1437 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 1438 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 | 1439 | |
949cf20f KS |
1440 | p->left_col = o->left_col; |
1441 | p->top_line = o->top_line; | |
1442 | p->total_cols = o->total_cols; | |
1443 | p->total_lines = o->total_lines; | |
5500c422 GM |
1444 | p->desired_matrix = p->current_matrix = 0; |
1445 | p->vscroll = 0; | |
1446 | bzero (&p->cursor, sizeof (p->cursor)); | |
1447 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
1448 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
1449 | p->phys_cursor_type = -1; | |
4b26579e | 1450 | p->phys_cursor_width = -1; |
5500c422 GM |
1451 | p->must_be_updated_p = 0; |
1452 | p->pseudo_window_p = 0; | |
1453 | XSETFASTINT (p->window_end_vpos, 0); | |
1454 | XSETFASTINT (p->window_end_pos, 0); | |
1455 | p->window_end_valid = Qnil; | |
7bbb5782 | 1456 | p->frozen_window_start_p = 0; |
949cf20f | 1457 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
1458 | |
1459 | p->next = tem = o->next; | |
265a9e55 | 1460 | if (!NILP (tem)) |
7ab12479 JB |
1461 | XWINDOW (tem)->prev = replacement; |
1462 | ||
1463 | p->prev = tem = o->prev; | |
265a9e55 | 1464 | if (!NILP (tem)) |
7ab12479 JB |
1465 | XWINDOW (tem)->next = replacement; |
1466 | ||
1467 | p->parent = tem = o->parent; | |
265a9e55 | 1468 | if (!NILP (tem)) |
7ab12479 JB |
1469 | { |
1470 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1471 | XWINDOW (tem)->vchild = replacement; | |
1472 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1473 | XWINDOW (tem)->hchild = replacement; | |
1474 | } | |
1475 | ||
1476 | /*** Here, if replacement is a vertical combination | |
1477 | and so is its new parent, we should make replacement's | |
1478 | children be children of that parent instead. ***/ | |
1479 | } | |
1480 | ||
1481 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
fdb82f93 PJ |
1482 | doc: /* Remove WINDOW from the display. Default is selected window. */) |
1483 | (window) | |
7ab12479 | 1484 | register Lisp_Object window; |
543f5fb1 | 1485 | { |
eeca6f6f SM |
1486 | struct frame *f; |
1487 | if (NILP (window)) | |
1488 | window = selected_window; | |
1489 | f = XFRAME (WINDOW_FRAME (XWINDOW (window))); | |
543f5fb1 RS |
1490 | delete_window (window); |
1491 | ||
eeca6f6f | 1492 | run_window_configuration_change_hook (f); |
543f5fb1 RS |
1493 | |
1494 | return Qnil; | |
1495 | } | |
1496 | ||
5e14b1fc | 1497 | void |
543f5fb1 RS |
1498 | delete_window (window) |
1499 | register Lisp_Object window; | |
7ab12479 JB |
1500 | { |
1501 | register Lisp_Object tem, parent, sib; | |
1502 | register struct window *p; | |
1503 | register struct window *par; | |
951f9df5 | 1504 | struct frame *f; |
7ab12479 | 1505 | |
605be8af JB |
1506 | /* Because this function is called by other C code on non-leaf |
1507 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1508 | so we can't decode_window here. */ | |
eeca6f6f | 1509 | CHECK_WINDOW (window); |
7ab12479 | 1510 | p = XWINDOW (window); |
605be8af | 1511 | |
0d384044 | 1512 | /* It's a no-op to delete an already-deleted window. */ |
605be8af JB |
1513 | if (NILP (p->buffer) |
1514 | && NILP (p->hchild) | |
1515 | && NILP (p->vchild)) | |
296b535c | 1516 | return; |
605be8af | 1517 | |
7ab12479 | 1518 | parent = p->parent; |
265a9e55 | 1519 | if (NILP (parent)) |
7ab12479 JB |
1520 | error ("Attempt to delete minibuffer or sole ordinary window"); |
1521 | par = XWINDOW (parent); | |
1522 | ||
1523 | windows_or_buffers_changed++; | |
67492200 | 1524 | Vwindow_list = Qnil; |
951f9df5 GM |
1525 | f = XFRAME (WINDOW_FRAME (p)); |
1526 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
7ab12479 | 1527 | |
605be8af JB |
1528 | /* Are we trying to delete any frame's selected window? */ |
1529 | { | |
192c3131 | 1530 | Lisp_Object swindow, pwindow; |
605be8af | 1531 | |
0def0403 RS |
1532 | /* See if the frame's selected window is either WINDOW |
1533 | or any subwindow of it, by finding all that window's parents | |
1534 | and comparing each one with WINDOW. */ | |
192c3131 | 1535 | swindow = FRAME_SELECTED_WINDOW (f); |
0def0403 | 1536 | |
192c3131 | 1537 | while (1) |
0def0403 | 1538 | { |
192c3131 RS |
1539 | pwindow = swindow; |
1540 | while (!NILP (pwindow)) | |
1541 | { | |
1542 | if (EQ (window, pwindow)) | |
1543 | break; | |
1544 | pwindow = XWINDOW (pwindow)->parent; | |
1545 | } | |
1546 | ||
1547 | /* If the window being deleted is not a parent of SWINDOW, | |
1548 | then SWINDOW is ok as the new selected window. */ | |
1549 | if (!EQ (window, pwindow)) | |
0def0403 | 1550 | break; |
192c3131 | 1551 | /* Otherwise, try another window for SWINDOW. */ |
3b8c0c70 | 1552 | swindow = Fnext_window (swindow, Qlambda, Qnil); |
192c3131 RS |
1553 | |
1554 | /* If we get back to the frame's selected window, | |
1555 | it means there was no acceptable alternative, | |
1556 | so we cannot delete. */ | |
1557 | if (EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
1558 | error ("Cannot delete window"); | |
0def0403 RS |
1559 | } |
1560 | ||
192c3131 RS |
1561 | /* If we need to change SWINDOW, do it. */ |
1562 | if (! EQ (swindow, FRAME_SELECTED_WINDOW (f))) | |
605be8af | 1563 | { |
605be8af JB |
1564 | /* If we're about to delete the selected window on the |
1565 | selected frame, then we should use Fselect_window to select | |
1566 | the new window. On the other hand, if we're about to | |
1567 | delete the selected window on any other frame, we shouldn't do | |
1568 | anything but set the frame's selected_window slot. */ | |
192c3131 | 1569 | if (EQ (FRAME_SELECTED_WINDOW (f), selected_window)) |
14d87dc9 | 1570 | Fselect_window (swindow, Qnil); |
605be8af | 1571 | else |
192c3131 | 1572 | FRAME_SELECTED_WINDOW (f) = swindow; |
605be8af JB |
1573 | } |
1574 | } | |
7ab12479 | 1575 | |
0d384044 RS |
1576 | /* Now we know we can delete this one. */ |
1577 | window_deletion_count++; | |
1578 | ||
7ab12479 JB |
1579 | tem = p->buffer; |
1580 | /* tem is null for dummy parent windows | |
1581 | (which have inferiors but not any contents themselves) */ | |
265a9e55 | 1582 | if (!NILP (tem)) |
7ab12479 JB |
1583 | { |
1584 | unshow_buffer (p); | |
2d0834cc SM |
1585 | unchain_marker (XMARKER (p->pointm)); |
1586 | unchain_marker (XMARKER (p->start)); | |
7ab12479 JB |
1587 | } |
1588 | ||
05e71564 GM |
1589 | /* Free window glyph matrices. It is sure that they are allocated |
1590 | again when ADJUST_GLYPHS is called. Block input so that expose | |
1591 | events and other events that access glyph matrices are not | |
1592 | processed while we are changing them. */ | |
1593 | BLOCK_INPUT; | |
951f9df5 | 1594 | free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f))); |
5500c422 | 1595 | |
7ab12479 | 1596 | tem = p->next; |
265a9e55 | 1597 | if (!NILP (tem)) |
7ab12479 JB |
1598 | XWINDOW (tem)->prev = p->prev; |
1599 | ||
1600 | tem = p->prev; | |
265a9e55 | 1601 | if (!NILP (tem)) |
7ab12479 JB |
1602 | XWINDOW (tem)->next = p->next; |
1603 | ||
1604 | if (EQ (window, par->hchild)) | |
1605 | par->hchild = p->next; | |
1606 | if (EQ (window, par->vchild)) | |
1607 | par->vchild = p->next; | |
1608 | ||
1609 | /* Find one of our siblings to give our space to. */ | |
1610 | sib = p->prev; | |
265a9e55 | 1611 | if (NILP (sib)) |
7ab12479 JB |
1612 | { |
1613 | /* If p gives its space to its next sibling, that sibling needs | |
1614 | to have its top/left side pulled back to where p's is. | |
1615 | set_window_{height,width} will re-position the sibling's | |
1616 | children. */ | |
1617 | sib = p->next; | |
949cf20f KS |
1618 | XWINDOW (sib)->top_line = p->top_line; |
1619 | XWINDOW (sib)->left_col = p->left_col; | |
7ab12479 JB |
1620 | } |
1621 | ||
1622 | /* Stretch that sibling. */ | |
265a9e55 | 1623 | if (!NILP (par->vchild)) |
7ab12479 | 1624 | set_window_height (sib, |
949cf20f | 1625 | XFASTINT (XWINDOW (sib)->total_lines) + XFASTINT (p->total_lines), |
7ab12479 | 1626 | 1); |
265a9e55 | 1627 | if (!NILP (par->hchild)) |
7ab12479 | 1628 | set_window_width (sib, |
949cf20f | 1629 | XFASTINT (XWINDOW (sib)->total_cols) + XFASTINT (p->total_cols), |
7ab12479 JB |
1630 | 1); |
1631 | ||
1632 | /* If parent now has only one child, | |
1633 | put the child into the parent's place. */ | |
7ab12479 | 1634 | tem = par->hchild; |
265a9e55 | 1635 | if (NILP (tem)) |
7ab12479 | 1636 | tem = par->vchild; |
5494d7bc | 1637 | if (NILP (XWINDOW (tem)->next)) { |
7ab12479 | 1638 | replace_window (parent, tem); |
5494d7bc JD |
1639 | par = XWINDOW (tem); |
1640 | } | |
605be8af JB |
1641 | |
1642 | /* Since we may be deleting combination windows, we must make sure that | |
1643 | not only p but all its children have been marked as deleted. */ | |
1644 | if (! NILP (p->hchild)) | |
1645 | delete_all_subwindows (XWINDOW (p->hchild)); | |
1646 | else if (! NILP (p->vchild)) | |
1647 | delete_all_subwindows (XWINDOW (p->vchild)); | |
1648 | ||
1649 | /* Mark this window as deleted. */ | |
1650 | p->buffer = p->hchild = p->vchild = Qnil; | |
5500c422 | 1651 | |
5494d7bc JD |
1652 | if (! NILP (par->parent)) |
1653 | par = XWINDOW (par->parent); | |
1654 | ||
1655 | /* Check if we have a v/hchild with a v/hchild. In that case remove | |
1656 | one of them. */ | |
ae12ecd7 | 1657 | |
5494d7bc JD |
1658 | if (! NILP (par->vchild) && ! NILP (XWINDOW (par->vchild)->vchild)) |
1659 | { | |
1660 | p = XWINDOW (par->vchild); | |
1661 | par->vchild = p->vchild; | |
1662 | tem = p->vchild; | |
1663 | } | |
1664 | else if (! NILP (par->hchild) && ! NILP (XWINDOW (par->hchild)->hchild)) | |
1665 | { | |
1666 | p = XWINDOW (par->hchild); | |
1667 | par->hchild = p->hchild; | |
1668 | tem = p->hchild; | |
1669 | } | |
1670 | else | |
1671 | p = 0; | |
1672 | ||
1673 | if (p) | |
1674 | { | |
1675 | while (! NILP (tem)) { | |
1676 | XWINDOW (tem)->parent = p->parent; | |
1677 | if (NILP (XWINDOW (tem)->next)) | |
1678 | break; | |
1679 | tem = XWINDOW (tem)->next; | |
1680 | } | |
1681 | if (! NILP (tem)) { | |
1682 | /* The next of the v/hchild we are removing is now the next of the | |
1683 | last child for the v/hchild: | |
1684 | Before v/hchild -> v/hchild -> next1 -> next2 | |
1685 | | | |
1686 | -> next3 | |
1687 | After: v/hchild -> next1 -> next2 -> next3 | |
1688 | */ | |
1689 | XWINDOW (tem)->next = p->next; | |
1690 | if (! NILP (p->next)) | |
1691 | XWINDOW (p->next)->prev = tem; | |
1692 | } | |
1693 | p->next = p->prev = p->vchild = p->hchild = p->buffer = Qnil; | |
1694 | } | |
1695 | ||
1696 | ||
5500c422 | 1697 | /* Adjust glyph matrices. */ |
951f9df5 | 1698 | adjust_glyphs (f); |
05e71564 | 1699 | UNBLOCK_INPUT; |
7ab12479 | 1700 | } |
67492200 GM |
1701 | |
1702 | ||
7ab12479 | 1703 | \f |
67492200 GM |
1704 | /*********************************************************************** |
1705 | Window List | |
1706 | ***********************************************************************/ | |
1707 | ||
f95464e4 GM |
1708 | /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object |
1709 | pointer. This is a callback function for foreach_window, used in | |
1710 | function window_list. */ | |
67492200 GM |
1711 | |
1712 | static int | |
f95464e4 | 1713 | add_window_to_list (w, user_data) |
67492200 | 1714 | struct window *w; |
f95464e4 | 1715 | void *user_data; |
67492200 | 1716 | { |
f95464e4 | 1717 | Lisp_Object *list = (Lisp_Object *) user_data; |
67492200 GM |
1718 | Lisp_Object window; |
1719 | XSETWINDOW (window, w); | |
212116d6 | 1720 | *list = Fcons (window, *list); |
67492200 GM |
1721 | return 1; |
1722 | } | |
1723 | ||
1724 | ||
1725 | /* Return a list of all windows, for use by next_window. If | |
1726 | Vwindow_list is a list, return that list. Otherwise, build a new | |
1727 | list, cache it in Vwindow_list, and return that. */ | |
1728 | ||
1729 | static Lisp_Object | |
1730 | window_list () | |
1731 | { | |
1732 | if (!CONSP (Vwindow_list)) | |
1733 | { | |
1734 | Lisp_Object tail; | |
212116d6 | 1735 | |
67492200 GM |
1736 | Vwindow_list = Qnil; |
1737 | for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail)) | |
212116d6 GM |
1738 | { |
1739 | Lisp_Object args[2]; | |
1740 | ||
1741 | /* We are visiting windows in canonical order, and add | |
1742 | new windows at the front of args[1], which means we | |
1743 | have to reverse this list at the end. */ | |
1744 | args[1] = Qnil; | |
1745 | foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]); | |
1746 | args[0] = Vwindow_list; | |
1747 | args[1] = Fnreverse (args[1]); | |
1748 | Vwindow_list = Fnconc (2, args); | |
1749 | } | |
67492200 | 1750 | } |
177c0ea7 | 1751 | |
67492200 GM |
1752 | return Vwindow_list; |
1753 | } | |
1754 | ||
1755 | ||
118ea242 GM |
1756 | /* Value is non-zero if WINDOW satisfies the constraints given by |
1757 | OWINDOW, MINIBUF and ALL_FRAMES. | |
67492200 | 1758 | |
118ea242 GM |
1759 | MINIBUF t means WINDOW may be minibuffer windows. |
1760 | `lambda' means WINDOW may not be a minibuffer window. | |
1761 | a window means a specific minibuffer window | |
67492200 | 1762 | |
118ea242 GM |
1763 | ALL_FRAMES t means search all frames, |
1764 | nil means search just current frame, | |
1765 | `visible' means search just visible frames, | |
1766 | 0 means search visible and iconified frames, | |
1767 | a window means search the frame that window belongs to, | |
1768 | a frame means consider windows on that frame, only. */ | |
67492200 GM |
1769 | |
1770 | static int | |
118ea242 GM |
1771 | candidate_window_p (window, owindow, minibuf, all_frames) |
1772 | Lisp_Object window, owindow, minibuf, all_frames; | |
67492200 GM |
1773 | { |
1774 | struct window *w = XWINDOW (window); | |
1775 | struct frame *f = XFRAME (w->frame); | |
1776 | int candidate_p = 1; | |
1777 | ||
1778 | if (!BUFFERP (w->buffer)) | |
1779 | candidate_p = 0; | |
1780 | else if (MINI_WINDOW_P (w) | |
1781 | && (EQ (minibuf, Qlambda) | |
1782 | || (WINDOWP (minibuf) && !EQ (minibuf, window)))) | |
1783 | { | |
1784 | /* If MINIBUF is `lambda' don't consider any mini-windows. | |
1785 | If it is a window, consider only that one. */ | |
1786 | candidate_p = 0; | |
1787 | } | |
118ea242 GM |
1788 | else if (EQ (all_frames, Qt)) |
1789 | candidate_p = 1; | |
67492200 | 1790 | else if (NILP (all_frames)) |
118ea242 GM |
1791 | { |
1792 | xassert (WINDOWP (owindow)); | |
1793 | candidate_p = EQ (w->frame, XWINDOW (owindow)->frame); | |
1794 | } | |
67492200 GM |
1795 | else if (EQ (all_frames, Qvisible)) |
1796 | { | |
1797 | FRAME_SAMPLE_VISIBILITY (f); | |
de509a60 SM |
1798 | candidate_p = FRAME_VISIBLE_P (f) |
1799 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
1800 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
1801 | ||
67492200 GM |
1802 | } |
1803 | else if (INTEGERP (all_frames) && XINT (all_frames) == 0) | |
1804 | { | |
1805 | FRAME_SAMPLE_VISIBILITY (f); | |
ca2d5566 SM |
1806 | candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f) |
1807 | #ifdef HAVE_X_WINDOWS | |
1808 | /* Yuck!! If we've just created the frame and the | |
1809 | window-manager requested the user to place it | |
1810 | manually, the window may still not be considered | |
1811 | `visible'. I'd argue it should be at least | |
1812 | something like `iconified', but don't know how to do | |
1813 | that yet. --Stef */ | |
1814 | || (FRAME_X_P (f) && f->output_data.x->asked_for_visible | |
1815 | && !f->output_data.x->has_been_visible) | |
1816 | #endif | |
de509a60 SM |
1817 | ) |
1818 | && (FRAME_TERMINAL (XFRAME (w->frame)) | |
1819 | == FRAME_TERMINAL (XFRAME (selected_frame))); | |
67492200 | 1820 | } |
67492200 GM |
1821 | else if (WINDOWP (all_frames)) |
1822 | candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames) | |
1823 | || EQ (XWINDOW (all_frames)->frame, w->frame) | |
1824 | || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))); | |
118ea242 GM |
1825 | else if (FRAMEP (all_frames)) |
1826 | candidate_p = EQ (all_frames, w->frame); | |
67492200 GM |
1827 | |
1828 | return candidate_p; | |
1829 | } | |
1830 | ||
1831 | ||
1832 | /* Decode arguments as allowed by Fnext_window, Fprevious_window, and | |
1833 | Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and | |
1834 | ALL_FRAMES. */ | |
1835 | ||
1836 | static void | |
1837 | decode_next_window_args (window, minibuf, all_frames) | |
1838 | Lisp_Object *window, *minibuf, *all_frames; | |
1839 | { | |
1840 | if (NILP (*window)) | |
1841 | *window = selected_window; | |
1842 | else | |
b7826503 | 1843 | CHECK_LIVE_WINDOW (*window); |
177c0ea7 | 1844 | |
67492200 GM |
1845 | /* MINIBUF nil may or may not include minibuffers. Decide if it |
1846 | does. */ | |
1847 | if (NILP (*minibuf)) | |
1848 | *minibuf = minibuf_level ? minibuf_window : Qlambda; | |
1849 | else if (!EQ (*minibuf, Qt)) | |
1850 | *minibuf = Qlambda; | |
177c0ea7 | 1851 | |
67492200 GM |
1852 | /* Now *MINIBUF can be t => count all minibuffer windows, `lambda' |
1853 | => count none of them, or a specific minibuffer window (the | |
1854 | active one) to count. */ | |
1855 | ||
1856 | /* ALL_FRAMES nil doesn't specify which frames to include. */ | |
1857 | if (NILP (*all_frames)) | |
1858 | *all_frames = (!EQ (*minibuf, Qlambda) | |
1859 | ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame)) | |
1860 | : Qnil); | |
1861 | else if (EQ (*all_frames, Qvisible)) | |
1862 | ; | |
0f8fe9a2 | 1863 | else if (EQ (*all_frames, make_number (0))) |
67492200 GM |
1864 | ; |
1865 | else if (FRAMEP (*all_frames)) | |
1866 | ; | |
1867 | else if (!EQ (*all_frames, Qt)) | |
1868 | *all_frames = Qnil; | |
177c0ea7 | 1869 | |
67492200 GM |
1870 | /* Now *ALL_FRAMES is t meaning search all frames, nil meaning |
1871 | search just current frame, `visible' meaning search just visible | |
1872 | frames, 0 meaning search visible and iconified frames, or a | |
1873 | window, meaning search the frame that window belongs to, or a | |
1874 | frame, meaning consider windows on that frame, only. */ | |
1875 | } | |
1876 | ||
1877 | ||
1878 | /* Return the next or previous window of WINDOW in canonical ordering | |
1879 | of windows. NEXT_P non-zero means return the next window. See the | |
1880 | documentation string of next-window for the meaning of MINIBUF and | |
1881 | ALL_FRAMES. */ | |
1882 | ||
1883 | static Lisp_Object | |
1884 | next_window (window, minibuf, all_frames, next_p) | |
1885 | Lisp_Object window, minibuf, all_frames; | |
1886 | int next_p; | |
1887 | { | |
1888 | decode_next_window_args (&window, &minibuf, &all_frames); | |
177c0ea7 | 1889 | |
67492200 GM |
1890 | /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just |
1891 | return the first window on the frame. */ | |
1892 | if (FRAMEP (all_frames) | |
1893 | && !EQ (all_frames, XWINDOW (window)->frame)) | |
1894 | return Fframe_first_window (all_frames); | |
177c0ea7 | 1895 | |
212116d6 | 1896 | if (next_p) |
67492200 GM |
1897 | { |
1898 | Lisp_Object list; | |
177c0ea7 | 1899 | |
67492200 GM |
1900 | /* Find WINDOW in the list of all windows. */ |
1901 | list = Fmemq (window, window_list ()); | |
1902 | ||
1903 | /* Scan forward from WINDOW to the end of the window list. */ | |
1904 | if (CONSP (list)) | |
1905 | for (list = XCDR (list); CONSP (list); list = XCDR (list)) | |
118ea242 | 1906 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1907 | break; |
1908 | ||
1909 | /* Scan from the start of the window list up to WINDOW. */ | |
1910 | if (!CONSP (list)) | |
1911 | for (list = Vwindow_list; | |
1912 | CONSP (list) && !EQ (XCAR (list), window); | |
1913 | list = XCDR (list)) | |
118ea242 | 1914 | if (candidate_window_p (XCAR (list), window, minibuf, all_frames)) |
67492200 GM |
1915 | break; |
1916 | ||
1917 | if (CONSP (list)) | |
1918 | window = XCAR (list); | |
1919 | } | |
1920 | else | |
1921 | { | |
1922 | Lisp_Object candidate, list; | |
177c0ea7 | 1923 | |
67492200 GM |
1924 | /* Scan through the list of windows for candidates. If there are |
1925 | candidate windows in front of WINDOW, the last one of these | |
1926 | is the one we want. If there are candidates following WINDOW | |
1927 | in the list, again the last one of these is the one we want. */ | |
1928 | candidate = Qnil; | |
1929 | for (list = window_list (); CONSP (list); list = XCDR (list)) | |
1930 | { | |
1931 | if (EQ (XCAR (list), window)) | |
1932 | { | |
1933 | if (WINDOWP (candidate)) | |
1934 | break; | |
1935 | } | |
118ea242 GM |
1936 | else if (candidate_window_p (XCAR (list), window, minibuf, |
1937 | all_frames)) | |
67492200 GM |
1938 | candidate = XCAR (list); |
1939 | } | |
1940 | ||
1941 | if (WINDOWP (candidate)) | |
1942 | window = candidate; | |
1943 | } | |
1944 | ||
1945 | return window; | |
1946 | } | |
7ab12479 | 1947 | |
7ab12479 | 1948 | |
26f6279d | 1949 | DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0, |
fdb82f93 PJ |
1950 | doc: /* Return next window after WINDOW in canonical ordering of windows. |
1951 | If omitted, WINDOW defaults to the selected window. | |
1952 | ||
1953 | Optional second arg MINIBUF t means count the minibuffer window even | |
1954 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1955 | it is active. MINIBUF neither t nor nil means not to count the | |
1956 | minibuffer even if it is active. | |
1957 | ||
1958 | Several frames may share a single minibuffer; if the minibuffer | |
1959 | counts, all windows on all frames that share that minibuffer count | |
1960 | too. Therefore, `next-window' can be used to iterate through the | |
1961 | set of windows even when the minibuffer is on another frame. If the | |
1962 | minibuffer does not count, only windows from WINDOW's frame count. | |
1963 | ||
1964 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1965 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1966 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
1967 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
1968 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
1969 | Anything else means restrict to WINDOW's frame. | |
1970 | ||
1971 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
1972 | `next-window' to iterate through the entire cycle of acceptable | |
1973 | windows, eventually ending up back at the window you started with. | |
1974 | `previous-window' traverses the same cycle, in the reverse order. */) | |
1975 | (window, minibuf, all_frames) | |
67492200 | 1976 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 1977 | { |
67492200 | 1978 | return next_window (window, minibuf, all_frames, 1); |
7ab12479 JB |
1979 | } |
1980 | ||
67492200 | 1981 | |
26f6279d | 1982 | DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0, |
fdb82f93 PJ |
1983 | doc: /* Return the window preceding WINDOW in canonical ordering of windows. |
1984 | If omitted, WINDOW defaults to the selected window. | |
1985 | ||
1986 | Optional second arg MINIBUF t means count the minibuffer window even | |
1987 | if not active. MINIBUF nil or omitted means count the minibuffer iff | |
1988 | it is active. MINIBUF neither t nor nil means not to count the | |
1989 | minibuffer even if it is active. | |
1990 | ||
1991 | Several frames may share a single minibuffer; if the minibuffer | |
1992 | counts, all windows on all frames that share that minibuffer count | |
1993 | too. Therefore, `previous-window' can be used to iterate through | |
1994 | the set of windows even when the minibuffer is on another frame. If | |
1995 | the minibuffer does not count, only windows from WINDOW's frame count | |
1996 | ||
1997 | Optional third arg ALL-FRAMES t means include windows on all frames. | |
1998 | ALL-FRAMES nil or omitted means cycle within the frames as specified | |
1999 | above. ALL-FRAMES = `visible' means include windows on all visible frames. | |
2000 | ALL-FRAMES = 0 means include windows on all visible and iconified frames. | |
2001 | If ALL-FRAMES is a frame, restrict search to windows on that frame. | |
2002 | Anything else means restrict to WINDOW's frame. | |
2003 | ||
2004 | If you use consistent values for MINIBUF and ALL-FRAMES, you can use | |
2005 | `previous-window' to iterate through the entire cycle of acceptable | |
2006 | windows, eventually ending up back at the window you started with. | |
2007 | `next-window' traverses the same cycle, in the reverse order. */) | |
2008 | (window, minibuf, all_frames) | |
67492200 | 2009 | Lisp_Object window, minibuf, all_frames; |
7ab12479 | 2010 | { |
67492200 | 2011 | return next_window (window, minibuf, all_frames, 0); |
7ab12479 JB |
2012 | } |
2013 | ||
67492200 | 2014 | |
62c07cc7 | 2015 | DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p", |
fdb82f93 PJ |
2016 | doc: /* Select the ARG'th different window on this frame. |
2017 | All windows on current frame are arranged in a cyclic order. | |
2018 | This command selects the window ARG steps away in that order. | |
c2755926 | 2019 | A negative ARG moves in the opposite order. The optional second |
8cd0d661 | 2020 | argument ALL-FRAMES has the same meaning as in `next-window', which see. */) |
fdb82f93 | 2021 | (arg, all_frames) |
67492200 | 2022 | Lisp_Object arg, all_frames; |
7ab12479 | 2023 | { |
67492200 GM |
2024 | Lisp_Object window; |
2025 | int i; | |
7ab12479 | 2026 | |
b7826503 | 2027 | CHECK_NUMBER (arg); |
67492200 | 2028 | window = selected_window; |
177c0ea7 | 2029 | |
67492200 GM |
2030 | for (i = XINT (arg); i > 0; --i) |
2031 | window = Fnext_window (window, Qnil, all_frames); | |
2032 | for (; i < 0; ++i) | |
2033 | window = Fprevious_window (window, Qnil, all_frames); | |
50e88778 | 2034 | |
14d87dc9 | 2035 | Fselect_window (window, Qnil); |
7ab12479 JB |
2036 | return Qnil; |
2037 | } | |
67492200 GM |
2038 | |
2039 | ||
2040 | DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0, | |
fdb82f93 PJ |
2041 | doc: /* Return a list of windows on FRAME, starting with WINDOW. |
2042 | FRAME nil or omitted means use the selected frame. | |
2043 | WINDOW nil or omitted means use the selected window. | |
2044 | MINIBUF t means include the minibuffer window, even if it isn't active. | |
2045 | MINIBUF nil or omitted means include the minibuffer window only | |
2046 | if it's active. | |
2047 | MINIBUF neither nil nor t means never include the minibuffer window. */) | |
2048 | (frame, minibuf, window) | |
cd2904bd GM |
2049 | Lisp_Object frame, minibuf, window; |
2050 | { | |
cd2904bd | 2051 | if (NILP (window)) |
acc6289a SM |
2052 | window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window; |
2053 | CHECK_WINDOW (window); | |
cd2904bd GM |
2054 | if (NILP (frame)) |
2055 | frame = selected_frame; | |
2056 | ||
2057 | if (!EQ (frame, XWINDOW (window)->frame)) | |
2058 | error ("Window is on a different frame"); | |
2059 | ||
2060 | return window_list_1 (window, minibuf, frame); | |
2061 | } | |
2062 | ||
2063 | ||
2064 | /* Return a list of windows in canonical ordering. Arguments are like | |
2065 | for `next-window'. */ | |
2066 | ||
2067 | static Lisp_Object | |
2068 | window_list_1 (window, minibuf, all_frames) | |
069f5950 | 2069 | Lisp_Object window, minibuf, all_frames; |
67492200 | 2070 | { |
403de3b4 | 2071 | Lisp_Object tail, list, rest; |
67492200 GM |
2072 | |
2073 | decode_next_window_args (&window, &minibuf, &all_frames); | |
2074 | list = Qnil; | |
177c0ea7 | 2075 | |
67492200 | 2076 | for (tail = window_list (); CONSP (tail); tail = XCDR (tail)) |
118ea242 | 2077 | if (candidate_window_p (XCAR (tail), window, minibuf, all_frames)) |
67492200 | 2078 | list = Fcons (XCAR (tail), list); |
177c0ea7 | 2079 | |
403de3b4 RS |
2080 | /* Rotate the list to start with WINDOW. */ |
2081 | list = Fnreverse (list); | |
2082 | rest = Fmemq (window, list); | |
2083 | if (!NILP (rest) && !EQ (rest, list)) | |
2084 | { | |
1725a7c9 | 2085 | for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail)) |
403de3b4 RS |
2086 | ; |
2087 | XSETCDR (tail, Qnil); | |
2088 | list = nconc2 (rest, list); | |
2089 | } | |
2090 | return list; | |
67492200 GM |
2091 | } |
2092 | ||
2093 | ||
7ab12479 JB |
2094 | \f |
2095 | /* Look at all windows, performing an operation specified by TYPE | |
2096 | with argument OBJ. | |
75d8f668 | 2097 | If FRAMES is Qt, look at all frames; |
75d8f668 | 2098 | Qnil, look at just the selected frame; |
89bca612 | 2099 | Qvisible, look at visible frames; |
75d8f668 | 2100 | a frame, just look at windows on that frame. |
85fe3b5e | 2101 | If MINI is non-zero, perform the operation on minibuffer windows too. */ |
7ab12479 JB |
2102 | |
2103 | enum window_loop | |
2104 | { | |
2105 | WINDOW_LOOP_UNUSED, | |
2106 | GET_BUFFER_WINDOW, /* Arg is buffer */ | |
2107 | GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
2108 | DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
2109 | DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
2110 | GET_LARGEST_WINDOW, | |
3f8ab7bd | 2111 | UNSHOW_BUFFER, /* Arg is buffer */ |
6b61353c | 2112 | REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */ |
3f8ab7bd | 2113 | CHECK_ALL_WINDOWS |
7ab12479 JB |
2114 | }; |
2115 | ||
2116 | static Lisp_Object | |
44fa5b1e | 2117 | window_loop (type, obj, mini, frames) |
7ab12479 | 2118 | enum window_loop type; |
118ea242 | 2119 | Lisp_Object obj, frames; |
7ab12479 JB |
2120 | int mini; |
2121 | { | |
118ea242 GM |
2122 | Lisp_Object window, windows, best_window, frame_arg; |
2123 | struct frame *f; | |
ffdc852d | 2124 | struct gcpro gcpro1; |
177c0ea7 | 2125 | |
44fa5b1e JB |
2126 | /* If we're only looping through windows on a particular frame, |
2127 | frame points to that frame. If we're looping through windows | |
2128 | on all frames, frame is 0. */ | |
2129 | if (FRAMEP (frames)) | |
118ea242 | 2130 | f = XFRAME (frames); |
44fa5b1e | 2131 | else if (NILP (frames)) |
118ea242 | 2132 | f = SELECTED_FRAME (); |
7ab12479 | 2133 | else |
118ea242 | 2134 | f = NULL; |
177c0ea7 | 2135 | |
118ea242 | 2136 | if (f) |
89bca612 | 2137 | frame_arg = Qlambda; |
0f8fe9a2 | 2138 | else if (EQ (frames, make_number (0))) |
f812f9c6 | 2139 | frame_arg = frames; |
89bca612 RS |
2140 | else if (EQ (frames, Qvisible)) |
2141 | frame_arg = frames; | |
118ea242 GM |
2142 | else |
2143 | frame_arg = Qt; | |
7ab12479 | 2144 | |
89bca612 RS |
2145 | /* frame_arg is Qlambda to stick to one frame, |
2146 | Qvisible to consider all visible frames, | |
2147 | or Qt otherwise. */ | |
2148 | ||
7ab12479 | 2149 | /* Pick a window to start with. */ |
017b2bad | 2150 | if (WINDOWP (obj)) |
118ea242 GM |
2151 | window = obj; |
2152 | else if (f) | |
2153 | window = FRAME_SELECTED_WINDOW (f); | |
7ab12479 | 2154 | else |
118ea242 | 2155 | window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ()); |
4b206065 | 2156 | |
cd2904bd | 2157 | windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg); |
118ea242 | 2158 | GCPRO1 (windows); |
7ab12479 | 2159 | best_window = Qnil; |
118ea242 | 2160 | |
e67a1dea | 2161 | for (; CONSP (windows); windows = XCDR (windows)) |
7ab12479 | 2162 | { |
118ea242 | 2163 | struct window *w; |
177c0ea7 | 2164 | |
118ea242 GM |
2165 | window = XCAR (windows); |
2166 | w = XWINDOW (window); | |
177c0ea7 | 2167 | |
118ea242 GM |
2168 | /* Note that we do not pay attention here to whether the frame |
2169 | is visible, since Fwindow_list skips non-visible frames if | |
2170 | that is desired, under the control of frame_arg. */ | |
2171 | if (!MINI_WINDOW_P (w) | |
65a04b96 RS |
2172 | /* For UNSHOW_BUFFER, we must always consider all windows. */ |
2173 | || type == UNSHOW_BUFFER | |
7ab12479 JB |
2174 | || (mini && minibuf_level > 0)) |
2175 | switch (type) | |
2176 | { | |
2177 | case GET_BUFFER_WINDOW: | |
118ea242 | 2178 | if (EQ (w->buffer, obj) |
5c204627 RS |
2179 | /* Don't find any minibuffer window |
2180 | except the one that is currently in use. */ | |
118ea242 GM |
2181 | && (MINI_WINDOW_P (w) |
2182 | ? EQ (window, minibuf_window) | |
2183 | : 1)) | |
2184 | { | |
5ddc1b75 GM |
2185 | if (NILP (best_window)) |
2186 | best_window = window; | |
2187 | else if (EQ (window, selected_window)) | |
ca2d5566 SM |
2188 | /* Prefer to return selected-window. */ |
2189 | RETURN_UNGCPRO (window); | |
2190 | else if (EQ (Fwindow_frame (window), selected_frame)) | |
2191 | /* Prefer windows on the current frame. */ | |
5ddc1b75 | 2192 | best_window = window; |
118ea242 | 2193 | } |
7ab12479 JB |
2194 | break; |
2195 | ||
2196 | case GET_LRU_WINDOW: | |
20b69789 SM |
2197 | /* `obj' is an integer encoding a bitvector. |
2198 | `obj & 1' means consider only full-width windows. | |
2199 | `obj & 2' means consider also dedicated windows. */ | |
2200 | if (((XINT (obj) & 1) && !WINDOW_FULL_WIDTH_P (w)) | |
3f489dc7 | 2201 | || (!(XINT (obj) & 2) && !NILP (w->dedicated)) |
20b69789 SM |
2202 | /* Minibuffer windows are always ignored. */ |
2203 | || MINI_WINDOW_P (w)) | |
7ab12479 | 2204 | break; |
265a9e55 | 2205 | if (NILP (best_window) |
7ab12479 | 2206 | || (XFASTINT (XWINDOW (best_window)->use_time) |
118ea242 GM |
2207 | > XFASTINT (w->use_time))) |
2208 | best_window = window; | |
7ab12479 JB |
2209 | break; |
2210 | ||
2211 | case DELETE_OTHER_WINDOWS: | |
118ea242 GM |
2212 | if (!EQ (window, obj)) |
2213 | Fdelete_window (window); | |
7ab12479 JB |
2214 | break; |
2215 | ||
2216 | case DELETE_BUFFER_WINDOWS: | |
118ea242 | 2217 | if (EQ (w->buffer, obj)) |
7ab12479 | 2218 | { |
118ea242 | 2219 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
3548e138 RS |
2220 | |
2221 | /* If this window is dedicated, and in a frame of its own, | |
2222 | kill the frame. */ | |
118ea242 GM |
2223 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2224 | && !NILP (w->dedicated) | |
3548e138 | 2225 | && other_visible_frames (f)) |
7ab12479 | 2226 | { |
3548e138 RS |
2227 | /* Skip the other windows on this frame. |
2228 | There might be one, the minibuffer! */ | |
118ea242 GM |
2229 | while (CONSP (XCDR (windows)) |
2230 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2231 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2232 | windows = XCDR (windows); | |
177c0ea7 | 2233 | |
3548e138 | 2234 | /* Now we can safely delete the frame. */ |
118ea242 GM |
2235 | Fdelete_frame (w->frame, Qnil); |
2236 | } | |
2237 | else if (NILP (w->parent)) | |
2238 | { | |
2239 | /* If we're deleting the buffer displayed in the | |
2240 | only window on the frame, find a new buffer to | |
2241 | display there. */ | |
2242 | Lisp_Object buffer; | |
2243 | buffer = Fother_buffer (obj, Qnil, w->frame); | |
949cf20f | 2244 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2245 | if (EQ (window, selected_window)) |
2246 | Fset_buffer (w->buffer); | |
7ab12479 JB |
2247 | } |
2248 | else | |
118ea242 | 2249 | Fdelete_window (window); |
7ab12479 JB |
2250 | } |
2251 | break; | |
2252 | ||
2253 | case GET_LARGEST_WINDOW: | |
20b69789 | 2254 | { /* nil `obj' means to ignore dedicated windows. */ |
118ea242 | 2255 | /* Ignore dedicated windows and minibuffers. */ |
3f489dc7 | 2256 | if (MINI_WINDOW_P (w) || (NILP (obj) && !NILP (w->dedicated))) |
118ea242 | 2257 | break; |
177c0ea7 | 2258 | |
c930dfab | 2259 | if (NILP (best_window)) |
118ea242 | 2260 | best_window = window; |
c930dfab GM |
2261 | else |
2262 | { | |
2263 | struct window *b = XWINDOW (best_window); | |
949cf20f KS |
2264 | if (XFASTINT (w->total_lines) * XFASTINT (w->total_cols) |
2265 | > XFASTINT (b->total_lines) * XFASTINT (b->total_cols)) | |
c930dfab GM |
2266 | best_window = window; |
2267 | } | |
7ab12479 JB |
2268 | } |
2269 | break; | |
2270 | ||
2271 | case UNSHOW_BUFFER: | |
118ea242 | 2272 | if (EQ (w->buffer, obj)) |
7ab12479 | 2273 | { |
118ea242 GM |
2274 | Lisp_Object buffer; |
2275 | struct frame *f = XFRAME (w->frame); | |
177c0ea7 | 2276 | |
7ab12479 | 2277 | /* Find another buffer to show in this window. */ |
118ea242 | 2278 | buffer = Fother_buffer (obj, Qnil, w->frame); |
177c0ea7 | 2279 | |
38ab08d1 RS |
2280 | /* If this window is dedicated, and in a frame of its own, |
2281 | kill the frame. */ | |
118ea242 GM |
2282 | if (EQ (window, FRAME_ROOT_WINDOW (f)) |
2283 | && !NILP (w->dedicated) | |
38ab08d1 | 2284 | && other_visible_frames (f)) |
45945a7b RS |
2285 | { |
2286 | /* Skip the other windows on this frame. | |
2287 | There might be one, the minibuffer! */ | |
118ea242 GM |
2288 | while (CONSP (XCDR (windows)) |
2289 | && EQ (XWINDOW (XCAR (windows))->frame, | |
2290 | XWINDOW (XCAR (XCDR (windows)))->frame)) | |
2291 | windows = XCDR (windows); | |
177c0ea7 | 2292 | |
45945a7b | 2293 | /* Now we can safely delete the frame. */ |
118ea242 | 2294 | Fdelete_frame (w->frame, Qnil); |
45945a7b | 2295 | } |
a5731348 SM |
2296 | else if (!NILP (w->dedicated) && !NILP (w->parent)) |
2297 | { | |
2298 | Lisp_Object window; | |
2299 | XSETWINDOW (window, w); | |
2300 | /* If this window is dedicated and not the only window | |
2301 | in its frame, then kill it. */ | |
2302 | Fdelete_window (window); | |
2303 | } | |
38ab08d1 | 2304 | else |
38ab08d1 RS |
2305 | { |
2306 | /* Otherwise show a different buffer in the window. */ | |
118ea242 | 2307 | w->dedicated = Qnil; |
949cf20f | 2308 | Fset_window_buffer (window, buffer, Qnil); |
118ea242 GM |
2309 | if (EQ (window, selected_window)) |
2310 | Fset_buffer (w->buffer); | |
38ab08d1 | 2311 | } |
7ab12479 JB |
2312 | } |
2313 | break; | |
3f8ab7bd | 2314 | |
6b61353c KH |
2315 | case REDISPLAY_BUFFER_WINDOWS: |
2316 | if (EQ (w->buffer, obj)) | |
2317 | { | |
2318 | mark_window_display_accurate (window, 0); | |
2319 | w->update_mode_line = Qt; | |
2320 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; | |
2321 | ++update_mode_lines; | |
2322 | best_window = window; | |
2323 | } | |
2324 | break; | |
2325 | ||
3f8ab7bd RS |
2326 | /* Check for a window that has a killed buffer. */ |
2327 | case CHECK_ALL_WINDOWS: | |
118ea242 GM |
2328 | if (! NILP (w->buffer) |
2329 | && NILP (XBUFFER (w->buffer)->name)) | |
3f8ab7bd | 2330 | abort (); |
118ea242 | 2331 | break; |
6bbd7a29 GM |
2332 | |
2333 | case WINDOW_LOOP_UNUSED: | |
2334 | break; | |
7ab12479 | 2335 | } |
7ab12479 | 2336 | } |
7ab12479 | 2337 | |
118ea242 | 2338 | UNGCPRO; |
7ab12479 | 2339 | return best_window; |
37962e60 | 2340 | } |
605be8af | 2341 | |
3f8ab7bd RS |
2342 | /* Used for debugging. Abort if any window has a dead buffer. */ |
2343 | ||
233a4a2c | 2344 | void |
3f8ab7bd RS |
2345 | check_all_windows () |
2346 | { | |
2347 | window_loop (CHECK_ALL_WINDOWS, Qnil, 1, Qt); | |
2348 | } | |
2349 | ||
3cbb13c8 | 2350 | DEFUN ("get-lru-window", Fget_lru_window, Sget_lru_window, 0, 2, 0, |
fdb82f93 | 2351 | doc: /* Return the window least recently selected or used for display. |
a55ca73c EZ |
2352 | \(LRU means Least Recently Used.) |
2353 | ||
6b61353c | 2354 | Return a full-width window if possible. |
c2755926 | 2355 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2356 | A dedicated window is never a candidate, unless DEDICATED is non-nil, |
2357 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2358 | If optional argument FRAME is `visible', search all visible frames. |
2359 | If FRAME is 0, search all visible and iconified frames. | |
2360 | If FRAME is t, search all frames. | |
2361 | If FRAME is nil, search only the selected frame. | |
2362 | If FRAME is a frame, search only that frame. */) | |
3cbb13c8 SM |
2363 | (frame, dedicated) |
2364 | Lisp_Object frame, dedicated; | |
7ab12479 JB |
2365 | { |
2366 | register Lisp_Object w; | |
2367 | /* First try for a window that is full-width */ | |
20b69789 SM |
2368 | w = window_loop (GET_LRU_WINDOW, |
2369 | NILP (dedicated) ? make_number (1) : make_number (3), | |
2370 | 0, frame); | |
265a9e55 | 2371 | if (!NILP (w) && !EQ (w, selected_window)) |
7ab12479 JB |
2372 | return w; |
2373 | /* If none of them, try the rest */ | |
20b69789 SM |
2374 | return window_loop (GET_LRU_WINDOW, |
2375 | NILP (dedicated) ? make_number (0) : make_number (2), | |
2376 | 0, frame); | |
7ab12479 JB |
2377 | } |
2378 | ||
3cbb13c8 | 2379 | DEFUN ("get-largest-window", Fget_largest_window, Sget_largest_window, 0, 2, 0, |
fdb82f93 | 2380 | doc: /* Return the largest window in area. |
c2755926 | 2381 | A minibuffer window is never a candidate. |
3cbb13c8 SM |
2382 | A dedicated window is never a candidate unless DEDICATED is non-nil, |
2383 | so if all windows are dedicated, the value is nil. | |
fdb82f93 PJ |
2384 | If optional argument FRAME is `visible', search all visible frames. |
2385 | If FRAME is 0, search all visible and iconified frames. | |
2386 | If FRAME is t, search all frames. | |
2387 | If FRAME is nil, search only the selected frame. | |
2388 | If FRAME is a frame, search only that frame. */) | |
3cbb13c8 SM |
2389 | (frame, dedicated) |
2390 | Lisp_Object frame, dedicated; | |
7ab12479 | 2391 | { |
20b69789 | 2392 | return window_loop (GET_LARGEST_WINDOW, dedicated, 0, |
44fa5b1e | 2393 | frame); |
7ab12479 JB |
2394 | } |
2395 | ||
2396 | DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 1, 2, 0, | |
fdb82f93 | 2397 | doc: /* Return a window currently displaying BUFFER, or nil if none. |
c2755926 | 2398 | BUFFER can be a buffer or a buffer name. |
fdb82f93 PJ |
2399 | If optional argument FRAME is `visible', search all visible frames. |
2400 | If optional argument FRAME is 0, search all visible and iconified frames. | |
2401 | If FRAME is t, search all frames. | |
2402 | If FRAME is nil, search only the selected frame. | |
2403 | If FRAME is a frame, search only that frame. */) | |
2404 | (buffer, frame) | |
2405 | Lisp_Object buffer, frame; | |
7ab12479 JB |
2406 | { |
2407 | buffer = Fget_buffer (buffer); | |
017b2bad | 2408 | if (BUFFERP (buffer)) |
44fa5b1e | 2409 | return window_loop (GET_BUFFER_WINDOW, buffer, 1, frame); |
7ab12479 JB |
2410 | else |
2411 | return Qnil; | |
2412 | } | |
2413 | ||
2414 | DEFUN ("delete-other-windows", Fdelete_other_windows, Sdelete_other_windows, | |
fdb82f93 PJ |
2415 | 0, 1, "", |
2416 | doc: /* Make WINDOW (or the selected window) fill its frame. | |
2417 | Only the frame WINDOW is on is affected. | |
2418 | This function tries to reduce display jumps | |
2419 | by keeping the text previously visible in WINDOW | |
2420 | in the same place on the frame. Doing this depends on | |
2421 | the value of (window-start WINDOW), so if calling this function | |
2422 | in a program gives strange scrolling, make sure the window-start | |
2423 | value is reasonable when this function is called. */) | |
2424 | (window) | |
7ab12479 JB |
2425 | Lisp_Object window; |
2426 | { | |
2427 | struct window *w; | |
00d3d838 | 2428 | int startpos; |
85fe3b5e | 2429 | int top, new_top; |
7ab12479 | 2430 | |
265a9e55 | 2431 | if (NILP (window)) |
7ab12479 JB |
2432 | window = selected_window; |
2433 | else | |
b7826503 | 2434 | CHECK_LIVE_WINDOW (window); |
7ab12479 | 2435 | w = XWINDOW (window); |
a2b38b3c | 2436 | |
00d3d838 | 2437 | startpos = marker_position (w->start); |
949cf20f | 2438 | top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
7ab12479 | 2439 | |
a2b38b3c RS |
2440 | if (MINI_WINDOW_P (w) && top > 0) |
2441 | error ("Can't expand minibuffer to full frame"); | |
2442 | ||
70728a80 | 2443 | window_loop (DELETE_OTHER_WINDOWS, window, 0, WINDOW_FRAME (w)); |
7ab12479 | 2444 | |
00d3d838 KH |
2445 | /* Try to minimize scrolling, by setting the window start to the point |
2446 | will cause the text at the old window start to be at the same place | |
2447 | on the frame. But don't try to do this if the window start is | |
2448 | outside the visible portion (as might happen when the display is | |
2449 | not current, due to typeahead). */ | |
949cf20f | 2450 | new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))); |
85fe3b5e GM |
2451 | if (new_top != top |
2452 | && startpos >= BUF_BEGV (XBUFFER (w->buffer)) | |
00d3d838 KH |
2453 | && startpos <= BUF_ZV (XBUFFER (w->buffer))) |
2454 | { | |
2455 | struct position pos; | |
2456 | struct buffer *obuf = current_buffer; | |
2457 | ||
2458 | Fset_buffer (w->buffer); | |
2459 | /* This computation used to temporarily move point, but that can | |
2460 | have unwanted side effects due to text properties. */ | |
0383eb57 | 2461 | pos = *vmotion (startpos, -top, w); |
4d047f50 | 2462 | |
b73ea88e | 2463 | set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos); |
85fe3b5e | 2464 | w->window_end_valid = Qnil; |
b73ea88e RS |
2465 | w->start_at_line_beg = ((pos.bytepos == BEGV_BYTE |
2466 | || FETCH_BYTE (pos.bytepos - 1) == '\n') ? Qt | |
00d3d838 | 2467 | : Qnil); |
80622eec RS |
2468 | /* We need to do this, so that the window-scroll-functions |
2469 | get called. */ | |
4d047f50 | 2470 | w->optional_new_start = Qt; |
00d3d838 KH |
2471 | |
2472 | set_buffer_internal (obuf); | |
2473 | } | |
5500c422 | 2474 | |
7ab12479 JB |
2475 | return Qnil; |
2476 | } | |
2477 | ||
2478 | DEFUN ("delete-windows-on", Fdelete_windows_on, Sdelete_windows_on, | |
fdb82f93 PJ |
2479 | 1, 2, "bDelete windows on (buffer): ", |
2480 | doc: /* Delete all windows showing BUFFER. | |
c2755926 | 2481 | BUFFER must be a buffer or the name of an existing buffer. |
fdb82f93 PJ |
2482 | Optional second argument FRAME controls which frames are affected. |
2483 | If optional argument FRAME is `visible', search all visible frames. | |
2484 | If FRAME is 0, search all visible and iconified frames. | |
2485 | If FRAME is nil, search all frames. | |
2486 | If FRAME is t, search only the selected frame. | |
2487 | If FRAME is a frame, search only that frame. */) | |
2488 | (buffer, frame) | |
26f6279d | 2489 | Lisp_Object buffer, frame; |
7ab12479 | 2490 | { |
26f6279d JB |
2491 | /* FRAME uses t and nil to mean the opposite of what window_loop |
2492 | expects. */ | |
c520265e RS |
2493 | if (NILP (frame)) |
2494 | frame = Qt; | |
2495 | else if (EQ (frame, Qt)) | |
2496 | frame = Qnil; | |
26f6279d | 2497 | |
265a9e55 | 2498 | if (!NILP (buffer)) |
7ab12479 JB |
2499 | { |
2500 | buffer = Fget_buffer (buffer); | |
b7826503 | 2501 | CHECK_BUFFER (buffer); |
26f6279d | 2502 | window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, frame); |
7ab12479 | 2503 | } |
177c0ea7 | 2504 | |
7ab12479 JB |
2505 | return Qnil; |
2506 | } | |
2507 | ||
2508 | DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, | |
fdb82f93 PJ |
2509 | Sreplace_buffer_in_windows, |
2510 | 1, 1, "bReplace buffer in windows: ", | |
c2755926 LT |
2511 | doc: /* Replace BUFFER with some other buffer in all windows showing it. |
2512 | BUFFER may be a buffer or the name of an existing buffer. */) | |
fdb82f93 | 2513 | (buffer) |
7ab12479 JB |
2514 | Lisp_Object buffer; |
2515 | { | |
265a9e55 | 2516 | if (!NILP (buffer)) |
7ab12479 JB |
2517 | { |
2518 | buffer = Fget_buffer (buffer); | |
b7826503 | 2519 | CHECK_BUFFER (buffer); |
7ab12479 JB |
2520 | window_loop (UNSHOW_BUFFER, buffer, 0, Qt); |
2521 | } | |
2522 | return Qnil; | |
2523 | } | |
ff58478b RS |
2524 | |
2525 | /* Replace BUFFER with some other buffer in all windows | |
2526 | of all frames, even those on other keyboards. */ | |
2527 | ||
2528 | void | |
2529 | replace_buffer_in_all_windows (buffer) | |
2530 | Lisp_Object buffer; | |
2531 | { | |
27abb84f | 2532 | #ifdef MULTI_KBOARD |
ff58478b RS |
2533 | Lisp_Object tail, frame; |
2534 | ||
ff58478b RS |
2535 | /* A single call to window_loop won't do the job |
2536 | because it only considers frames on the current keyboard. | |
2537 | So loop manually over frames, and handle each one. */ | |
2538 | FOR_EACH_FRAME (tail, frame) | |
db7f721d | 2539 | window_loop (UNSHOW_BUFFER, buffer, 1, frame); |
ff58478b | 2540 | #else |
db7f721d | 2541 | window_loop (UNSHOW_BUFFER, buffer, 1, Qt); |
ff58478b RS |
2542 | #endif |
2543 | } | |
7ab12479 JB |
2544 | \f |
2545 | /* Set the height of WINDOW and all its inferiors. */ | |
a481b3ea JB |
2546 | |
2547 | /* The smallest acceptable dimensions for a window. Anything smaller | |
2548 | might crash Emacs. */ | |
5500c422 | 2549 | |
a481b3ea | 2550 | #define MIN_SAFE_WINDOW_WIDTH (2) |
dc1ab1ee | 2551 | #define MIN_SAFE_WINDOW_HEIGHT (1) |
a481b3ea JB |
2552 | |
2553 | /* Make sure that window_min_height and window_min_width are | |
2554 | not too small; if they are, set them to safe minima. */ | |
2555 | ||
2556 | static void | |
2557 | check_min_window_sizes () | |
2558 | { | |
2559 | /* Smaller values might permit a crash. */ | |
2560 | if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
2561 | window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
2562 | if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
2563 | window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
2564 | } | |
2565 | ||
2566 | /* If *ROWS or *COLS are too small a size for FRAME, set them to the | |
2567 | minimum allowable size. */ | |
5500c422 | 2568 | |
605be8af | 2569 | void |
a481b3ea | 2570 | check_frame_size (frame, rows, cols) |
605be8af JB |
2571 | FRAME_PTR frame; |
2572 | int *rows, *cols; | |
a481b3ea | 2573 | { |
628df3bf | 2574 | /* For height, we have to see: |
54b8bcb5 RS |
2575 | how many windows the frame has at minimum (one or two), |
2576 | and whether it has a menu bar or other special stuff at the top. */ | |
2577 | int min_height | |
2578 | = ((FRAME_MINIBUF_ONLY_P (frame) || ! FRAME_HAS_MINIBUF_P (frame)) | |
2579 | ? MIN_SAFE_WINDOW_HEIGHT | |
2580 | : 2 * MIN_SAFE_WINDOW_HEIGHT); | |
177c0ea7 | 2581 | |
5500c422 GM |
2582 | if (FRAME_TOP_MARGIN (frame) > 0) |
2583 | min_height += FRAME_TOP_MARGIN (frame); | |
a481b3ea JB |
2584 | |
2585 | if (*rows < min_height) | |
2586 | *rows = min_height; | |
2587 | if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
2588 | *cols = MIN_SAFE_WINDOW_WIDTH; | |
2589 | } | |
2590 | ||
233a4a2c GM |
2591 | /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means |
2592 | check if W's width can be changed, otherwise check W's height. | |
2593 | CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's | |
2594 | siblings, too. If none of the siblings is resizable, WINDOW isn't | |
2595 | either. */ | |
c1636aa6 | 2596 | |
233a4a2c GM |
2597 | static int |
2598 | window_fixed_size_p (w, width_p, check_siblings_p) | |
2599 | struct window *w; | |
2600 | int width_p, check_siblings_p; | |
2601 | { | |
2602 | int fixed_p; | |
2603 | struct window *c; | |
177c0ea7 | 2604 | |
233a4a2c GM |
2605 | if (!NILP (w->hchild)) |
2606 | { | |
2607 | c = XWINDOW (w->hchild); | |
177c0ea7 | 2608 | |
233a4a2c GM |
2609 | if (width_p) |
2610 | { | |
2611 | /* A horiz. combination is fixed-width if all of if its | |
2612 | children are. */ | |
2613 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2614 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2615 | fixed_p = c == NULL; | |
2616 | } | |
2617 | else | |
2618 | { | |
2619 | /* A horiz. combination is fixed-height if one of if its | |
2620 | children is. */ | |
2621 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2622 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2623 | fixed_p = c != NULL; | |
2624 | } | |
2625 | } | |
2626 | else if (!NILP (w->vchild)) | |
2627 | { | |
2628 | c = XWINDOW (w->vchild); | |
177c0ea7 | 2629 | |
233a4a2c GM |
2630 | if (width_p) |
2631 | { | |
2632 | /* A vert. combination is fixed-width if one of if its | |
2633 | children is. */ | |
2634 | while (c && !window_fixed_size_p (c, width_p, 0)) | |
2635 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2636 | fixed_p = c != NULL; | |
2637 | } | |
2638 | else | |
2639 | { | |
2640 | /* A vert. combination is fixed-height if all of if its | |
2641 | children are. */ | |
2642 | while (c && window_fixed_size_p (c, width_p, 0)) | |
2643 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2644 | fixed_p = c == NULL; | |
2645 | } | |
2646 | } | |
2647 | else if (BUFFERP (w->buffer)) | |
2648 | { | |
3df0580e AS |
2649 | struct buffer *old = current_buffer; |
2650 | Lisp_Object val; | |
177c0ea7 | 2651 | |
3df0580e AS |
2652 | current_buffer = XBUFFER (w->buffer); |
2653 | val = find_symbol_value (Qwindow_size_fixed); | |
2654 | current_buffer = old; | |
a34dfd12 | 2655 | |
3df0580e AS |
2656 | fixed_p = 0; |
2657 | if (!EQ (val, Qunbound)) | |
2658 | { | |
2659 | fixed_p = !NILP (val); | |
177c0ea7 | 2660 | |
3df0580e AS |
2661 | if (fixed_p |
2662 | && ((EQ (val, Qheight) && width_p) | |
2663 | || (EQ (val, Qwidth) && !width_p))) | |
2664 | fixed_p = 0; | |
233a4a2c GM |
2665 | } |
2666 | ||
2667 | /* Can't tell if this one is resizable without looking at | |
2668 | siblings. If all siblings are fixed-size this one is too. */ | |
2669 | if (!fixed_p && check_siblings_p && WINDOWP (w->parent)) | |
2670 | { | |
2671 | Lisp_Object child; | |
177c0ea7 | 2672 | |
9beb8baa | 2673 | for (child = w->prev; WINDOWP (child); child = XWINDOW (child)->prev) |
233a4a2c GM |
2674 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) |
2675 | break; | |
2676 | ||
2677 | if (NILP (child)) | |
9beb8baa | 2678 | for (child = w->next; WINDOWP (child); child = XWINDOW (child)->next) |
233a4a2c GM |
2679 | if (!window_fixed_size_p (XWINDOW (child), width_p, 0)) |
2680 | break; | |
2681 | ||
2682 | if (NILP (child)) | |
2683 | fixed_p = 1; | |
2684 | } | |
2685 | } | |
2686 | else | |
2687 | fixed_p = 1; | |
2688 | ||
2689 | return fixed_p; | |
2690 | } | |
177c0ea7 | 2691 | |
f1de8c77 | 2692 | /* Return the minimum size for leaf window W. WIDTH_P non-zero means |
67b73e3a MR |
2693 | take into account fringes and the scrollbar of W. WIDTH_P zero means |
2694 | take into account mode-line of W. Return 1 for the minibuffer. */ | |
f1de8c77 MR |
2695 | |
2696 | static int | |
2697 | window_min_size_2 (w, width_p) | |
2698 | struct window *w; | |
2699 | int width_p; | |
2700 | { | |
2701 | int size; | |
2702 | ||
2703 | if (width_p) | |
2704 | size = max (window_min_width, | |
2705 | (MIN_SAFE_WINDOW_WIDTH | |
2706 | + WINDOW_FRINGE_COLS (w) | |
2707 | + WINDOW_SCROLL_BAR_COLS (w))); | |
2708 | else if (MINI_WINDOW_P (w)) | |
2709 | size = 1; | |
2710 | else | |
2711 | size = max (window_min_height, | |
2712 | (MIN_SAFE_WINDOW_HEIGHT | |
67b73e3a MR |
2713 | /* Don't count the header-line here. It would break |
2714 | splitting a window with a header-line when the new | |
2715 | window shall have a height of two (calculator does | |
2716 | that). */ | |
2717 | + (WINDOW_WANTS_MODELINE_P (w) ? 1 : 0))); | |
f1de8c77 MR |
2718 | |
2719 | return size; | |
2720 | } | |
233a4a2c GM |
2721 | |
2722 | /* Return the minimum size of window W, not taking fixed-width windows | |
2723 | into account. WIDTH_P non-zero means return the minimum width, | |
2724 | otherwise return the minimum height. If W is a combination window, | |
2725 | compute the minimum size from the minimum sizes of W's children. */ | |
2726 | ||
2727 | static int | |
2728 | window_min_size_1 (w, width_p) | |
c1636aa6 GM |
2729 | struct window *w; |
2730 | int width_p; | |
2731 | { | |
233a4a2c | 2732 | struct window *c; |
c1636aa6 | 2733 | int size; |
177c0ea7 | 2734 | |
233a4a2c GM |
2735 | if (!NILP (w->hchild)) |
2736 | { | |
2737 | c = XWINDOW (w->hchild); | |
2738 | size = 0; | |
177c0ea7 | 2739 | |
233a4a2c GM |
2740 | if (width_p) |
2741 | { | |
2742 | /* The min width of a horizontal combination is | |
2743 | the sum of the min widths of its children. */ | |
2744 | while (c) | |
2745 | { | |
2746 | size += window_min_size_1 (c, width_p); | |
2747 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2748 | } | |
2749 | } | |
2750 | else | |
2751 | { | |
2752 | /* The min height a horizontal combination equals | |
2753 | the maximum of all min height of its children. */ | |
2754 | while (c) | |
2755 | { | |
2756 | int min_size = window_min_size_1 (c, width_p); | |
2757 | size = max (min_size, size); | |
2758 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2759 | } | |
2760 | } | |
2761 | } | |
2762 | else if (!NILP (w->vchild)) | |
2763 | { | |
2764 | c = XWINDOW (w->vchild); | |
2765 | size = 0; | |
177c0ea7 | 2766 | |
233a4a2c GM |
2767 | if (width_p) |
2768 | { | |
2769 | /* The min width of a vertical combination is | |
2770 | the maximum of the min widths of its children. */ | |
2771 | while (c) | |
2772 | { | |
2773 | int min_size = window_min_size_1 (c, width_p); | |
2774 | size = max (min_size, size); | |
2775 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2776 | } | |
2777 | } | |
2778 | else | |
2779 | { | |
2780 | /* The min height of a vertical combination equals | |
2781 | the sum of the min height of its children. */ | |
2782 | while (c) | |
2783 | { | |
2784 | size += window_min_size_1 (c, width_p); | |
2785 | c = WINDOWP (c->next) ? XWINDOW (c->next) : NULL; | |
2786 | } | |
2787 | } | |
2788 | } | |
c1636aa6 | 2789 | else |
f1de8c77 | 2790 | size = window_min_size_2 (w, width_p); |
c1636aa6 GM |
2791 | |
2792 | return size; | |
2793 | } | |
2794 | ||
2795 | ||
233a4a2c GM |
2796 | /* Return the minimum size of window W, taking fixed-size windows into |
2797 | account. WIDTH_P non-zero means return the minimum width, | |
f984d4fc GM |
2798 | otherwise return the minimum height. IGNORE_FIXED_P non-zero means |
2799 | ignore if W is fixed-size. Set *FIXED to 1 if W is fixed-size | |
2800 | unless FIXED is null. */ | |
7ab12479 | 2801 | |
233a4a2c | 2802 | static int |
f984d4fc | 2803 | window_min_size (w, width_p, ignore_fixed_p, fixed) |
233a4a2c | 2804 | struct window *w; |
f984d4fc | 2805 | int width_p, ignore_fixed_p, *fixed; |
233a4a2c GM |
2806 | { |
2807 | int size, fixed_p; | |
2808 | ||
f984d4fc GM |
2809 | if (ignore_fixed_p) |
2810 | fixed_p = 0; | |
2811 | else | |
2812 | fixed_p = window_fixed_size_p (w, width_p, 1); | |
177c0ea7 | 2813 | |
233a4a2c GM |
2814 | if (fixed) |
2815 | *fixed = fixed_p; | |
177c0ea7 | 2816 | |
233a4a2c | 2817 | if (fixed_p) |
949cf20f | 2818 | size = width_p ? XFASTINT (w->total_cols) : XFASTINT (w->total_lines); |
233a4a2c GM |
2819 | else |
2820 | size = window_min_size_1 (w, width_p); | |
177c0ea7 | 2821 | |
233a4a2c GM |
2822 | return size; |
2823 | } | |
2824 | ||
2825 | ||
79fd290e | 2826 | /* Adjust the margins of window W if text area is too small. |
949cf20f KS |
2827 | Return 1 if window width is ok after adjustment; 0 if window |
2828 | is still too narrow. */ | |
2829 | ||
2830 | static int | |
2831 | adjust_window_margins (w) | |
2832 | struct window *w; | |
2833 | { | |
2834 | int box_cols = (WINDOW_TOTAL_COLS (w) | |
2835 | - WINDOW_FRINGE_COLS (w) | |
2836 | - WINDOW_SCROLL_BAR_COLS (w)); | |
2837 | int margin_cols = (WINDOW_LEFT_MARGIN_COLS (w) | |
2838 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
2839 | ||
2840 | if (box_cols - margin_cols >= MIN_SAFE_WINDOW_WIDTH) | |
2841 | return 1; | |
2842 | ||
2843 | if (margin_cols < 0 || box_cols < MIN_SAFE_WINDOW_WIDTH) | |
2844 | return 0; | |
2845 | ||
2846 | /* Window's text area is too narrow, but reducing the window | |
2847 | margins will fix that. */ | |
2848 | margin_cols = box_cols - MIN_SAFE_WINDOW_WIDTH; | |
2849 | if (WINDOW_RIGHT_MARGIN_COLS (w) > 0) | |
2850 | { | |
2851 | if (WINDOW_LEFT_MARGIN_COLS (w) > 0) | |
2852 | w->left_margin_cols = w->right_margin_cols | |
2853 | = make_number (margin_cols/2); | |
2854 | else | |
2855 | w->right_margin_cols = make_number (margin_cols); | |
2856 | } | |
2857 | else | |
2858 | w->left_margin_cols = make_number (margin_cols); | |
2859 | return 1; | |
2860 | } | |
2861 | ||
6b61353c KH |
2862 | /* Calculate new sizes for windows in the list FORWARD when the window size |
2863 | goes from TOTAL to SIZE. TOTAL must be greater than SIZE. | |
2864 | The number of windows in FORWARD is NCHILDREN, and the number that | |
2865 | can shrink is SHRINKABLE. | |
2866 | The minimum size a window can have is MIN_SIZE. | |
2867 | If we are shrinking fixed windows, RESIZE_FIXED_P is non-zero. | |
2868 | If we are shrinking columns, WIDTH_P is non-zero, otherwise we are | |
2869 | shrinking rows. | |
2870 | ||
2871 | This function returns an allocated array of new sizes that the caller | |
2872 | must free. The size -1 means the window is fixed and RESIZE_FIXED_P | |
2873 | is zero. Array index 0 refers to the first window in FORWARD, 1 to | |
2874 | the second, and so on. | |
2875 | ||
2876 | This function tries to keep windows at least at the minimum size | |
2877 | and resize other windows before it resizes any window to zero (i.e. | |
2878 | delete that window). | |
2879 | ||
2880 | Windows are resized proportional to their size, so bigger windows | |
2881 | shrink more than smaller windows. */ | |
2882 | static int * | |
2883 | shrink_windows (total, size, nchildren, shrinkable, | |
2884 | min_size, resize_fixed_p, forward, width_p) | |
2885 | int total, size, nchildren, shrinkable, min_size; | |
2886 | int resize_fixed_p, width_p; | |
2887 | Lisp_Object forward; | |
2888 | { | |
2889 | int available_resize = 0; | |
2890 | int *new_sizes; | |
2891 | struct window *c; | |
2892 | Lisp_Object child; | |
2893 | int smallest = total; | |
2894 | int total_removed = 0; | |
2895 | int total_shrink = total - size; | |
2896 | int i; | |
2897 | ||
2898 | new_sizes = xmalloc (sizeof (*new_sizes) * nchildren); | |
2899 | ||
2900 | for (i = 0, child = forward; !NILP (child); child = c->next, ++i) | |
2901 | { | |
2902 | int child_size; | |
2903 | ||
2904 | c = XWINDOW (child); | |
2905 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); | |
2906 | ||
2907 | if (! resize_fixed_p && window_fixed_size_p (c, width_p, 0)) | |
2908 | new_sizes[i] = -1; | |
2909 | else | |
2910 | { | |
2911 | new_sizes[i] = child_size; | |
2912 | if (child_size > min_size) | |
2913 | available_resize += child_size - min_size; | |
2914 | } | |
2915 | } | |
2916 | /* We might need to shrink some windows to zero. Find the smallest | |
2917 | windows and set them to 0 until we can fulfil the new size. */ | |
2918 | ||
2919 | while (shrinkable > 1 && size + available_resize < total) | |
2920 | { | |
2921 | for (i = 0; i < nchildren; ++i) | |
2922 | if (new_sizes[i] > 0 && smallest > new_sizes[i]) | |
2923 | smallest = new_sizes[i]; | |
2924 | ||
2925 | for (i = 0; i < nchildren; ++i) | |
2926 | if (new_sizes[i] == smallest) | |
2927 | { | |
2928 | /* Resize this window down to zero. */ | |
2929 | new_sizes[i] = 0; | |
2930 | if (smallest > min_size) | |
2931 | available_resize -= smallest - min_size; | |
2932 | available_resize += smallest; | |
2933 | --shrinkable; | |
2934 | total_removed += smallest; | |
2935 | ||
ef614e04 JD |
2936 | /* We don't know what the smallest is now. */ |
2937 | smallest = total; | |
2938 | ||
6b61353c KH |
2939 | /* Out of for, just remove one window at the time and |
2940 | check again if we have enough space. */ | |
2941 | break; | |
2942 | } | |
2943 | } | |
2944 | ||
2945 | /* Now, calculate the new sizes. Try to shrink each window | |
2946 | proportional to its size. */ | |
2947 | for (i = 0; i < nchildren; ++i) | |
2948 | { | |
2949 | if (new_sizes[i] > min_size) | |
2950 | { | |
2951 | int to_shrink = total_shrink*new_sizes[i]/total; | |
2952 | if (new_sizes[i] - to_shrink < min_size) | |
2953 | to_shrink = new_sizes[i] - min_size; | |
2954 | new_sizes[i] -= to_shrink; | |
2955 | total_removed += to_shrink; | |
2956 | } | |
2957 | } | |
2958 | ||
2959 | /* Any reminder due to rounding, we just subtract from windows | |
2960 | that are left and still can be shrunk. */ | |
2961 | while (total_shrink > total_removed) | |
2962 | { | |
ef614e04 JD |
2963 | int nonzero_sizes = 0; |
2964 | int nonzero_idx = -1; | |
2965 | ||
2966 | for (i = 0; i < nchildren; ++i) | |
2967 | if (new_sizes[i] > 0) | |
2968 | { | |
2969 | ++nonzero_sizes; | |
2970 | nonzero_idx = i; | |
2971 | } | |
c49a0495 | 2972 | |
6b61353c KH |
2973 | for (i = 0; i < nchildren; ++i) |
2974 | if (new_sizes[i] > min_size) | |
2975 | { | |
2976 | --new_sizes[i]; | |
2977 | ++total_removed; | |
2978 | ||
2979 | /* Out of for, just shrink one window at the time and | |
2980 | check again if we have enough space. */ | |
2981 | break; | |
2982 | } | |
ef614e04 JD |
2983 | |
2984 | ||
2985 | /* Special case, only one window left. */ | |
2986 | if (nonzero_sizes == 1) | |
2987 | break; | |
2988 | } | |
2989 | ||
2990 | /* Any surplus due to rounding, we add to windows that are left. */ | |
2991 | while (total_shrink < total_removed) | |
2992 | { | |
2993 | for (i = 0; i < nchildren; ++i) | |
2994 | { | |
2995 | if (new_sizes[i] != 0 && total_shrink < total_removed) | |
2996 | { | |
2997 | ++new_sizes[i]; | |
2998 | --total_removed; | |
2999 | break; | |
3000 | } | |
3001 | } | |
6b61353c KH |
3002 | } |
3003 | ||
3004 | return new_sizes; | |
3005 | } | |
949cf20f | 3006 | |
233a4a2c GM |
3007 | /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set |
3008 | WINDOW's width. Resize WINDOW's children, if any, so that they | |
5fe0b054 RS |
3009 | keep their proportionate size relative to WINDOW. |
3010 | ||
3011 | If FIRST_ONLY is 1, change only the first of WINDOW's children when | |
3012 | they are in series. If LAST_ONLY is 1, change only the last of | |
3013 | WINDOW's children when they are in series. | |
3014 | ||
3015 | Propagate WINDOW's top or left edge position to children. Delete | |
3016 | windows that become too small unless NODELETE_P is non-zero. | |
192c3131 RS |
3017 | |
3018 | If NODELETE_P is 2, that means we do delete windows that are | |
3019 | too small, even if they were too small before! */ | |
233a4a2c GM |
3020 | |
3021 | static void | |
5fe0b054 | 3022 | size_window (window, size, width_p, nodelete_p, first_only, last_only) |
7ab12479 | 3023 | Lisp_Object window; |
233a4a2c | 3024 | int size, width_p, nodelete_p; |
5fe0b054 | 3025 | int first_only, last_only; |
7ab12479 | 3026 | { |
233a4a2c GM |
3027 | struct window *w = XWINDOW (window); |
3028 | struct window *c; | |
3029 | Lisp_Object child, *forward, *sideward; | |
949cf20f | 3030 | int old_size, min_size, safe_min_size; |
7ab12479 | 3031 | |
a481b3ea | 3032 | check_min_window_sizes (); |
7ae2f10f | 3033 | size = max (0, size); |
177c0ea7 | 3034 | |
b5f05b50 GM |
3035 | /* If the window has been "too small" at one point, |
3036 | don't delete it for being "too small" in the future. | |
3037 | Preserve it as long as that is at all possible. */ | |
233a4a2c GM |
3038 | if (width_p) |
3039 | { | |
949cf20f | 3040 | old_size = WINDOW_TOTAL_COLS (w); |
233a4a2c | 3041 | min_size = window_min_width; |
f1de8c77 | 3042 | safe_min_size = window_min_size_2 (w, 1); |
233a4a2c GM |
3043 | } |
3044 | else | |
3045 | { | |
949cf20f | 3046 | old_size = XINT (w->total_lines); |
233a4a2c | 3047 | min_size = window_min_height; |
f1de8c77 | 3048 | safe_min_size = window_min_size_2 (w, 0); |
233a4a2c | 3049 | } |
192c3131 RS |
3050 | |
3051 | if (old_size < min_size && nodelete_p != 2) | |
b5f05b50 GM |
3052 | w->too_small_ok = Qt; |
3053 | ||
f1de8c77 MR |
3054 | /* Move the following test here since otherwise the |
3055 | preceding test doesn't make sense. martin. */ | |
3056 | if (nodelete_p == 2) | |
3057 | nodelete_p = 0; | |
3058 | ||
233a4a2c | 3059 | /* Maybe delete WINDOW if it's too small. */ |
192c3131 | 3060 | if (nodelete_p != 1 && !NILP (w->parent)) |
7ab12479 | 3061 | { |
b5f05b50 | 3062 | if (!MINI_WINDOW_P (w) && !NILP (w->too_small_ok)) |
233a4a2c | 3063 | min_size = width_p ? MIN_SAFE_WINDOW_WIDTH : MIN_SAFE_WINDOW_HEIGHT; |
949cf20f KS |
3064 | if (min_size < safe_min_size) |
3065 | min_size = safe_min_size; | |
233a4a2c | 3066 | if (size < min_size) |
c1636aa6 GM |
3067 | { |
3068 | delete_window (window); | |
3069 | return; | |
3070 | } | |
7ab12479 JB |
3071 | } |
3072 | ||
233a4a2c | 3073 | /* Set redisplay hints. */ |
7ae2f10f GM |
3074 | w->last_modified = make_number (0); |
3075 | w->last_overlay_modified = make_number (0); | |
7ab12479 | 3076 | windows_or_buffers_changed++; |
7ae2f10f | 3077 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1; |
29aeee73 | 3078 | |
233a4a2c GM |
3079 | if (width_p) |
3080 | { | |
3081 | sideward = &w->vchild; | |
3082 | forward = &w->hchild; | |
949cf20f KS |
3083 | w->total_cols = make_number (size); |
3084 | adjust_window_margins (w); | |
233a4a2c GM |
3085 | } |
3086 | else | |
3087 | { | |
3088 | sideward = &w->hchild; | |
3089 | forward = &w->vchild; | |
949cf20f KS |
3090 | w->total_lines = make_number (size); |
3091 | w->orig_total_lines = Qnil; | |
233a4a2c GM |
3092 | } |
3093 | ||
3094 | if (!NILP (*sideward)) | |
7ab12479 | 3095 | { |
5fe0b054 | 3096 | /* We have a chain of parallel siblings whose size should all change. */ |
233a4a2c | 3097 | for (child = *sideward; !NILP (child); child = c->next) |
7ab12479 | 3098 | { |
233a4a2c GM |
3099 | c = XWINDOW (child); |
3100 | if (width_p) | |
949cf20f | 3101 | c->left_col = w->left_col; |
233a4a2c | 3102 | else |
949cf20f | 3103 | c->top_line = w->top_line; |
5fe0b054 RS |
3104 | size_window (child, size, width_p, nodelete_p, |
3105 | first_only, last_only); | |
7ab12479 JB |
3106 | } |
3107 | } | |
5fe0b054 RS |
3108 | else if (!NILP (*forward) && last_only) |
3109 | { | |
3110 | /* Change the last in a series of siblings. */ | |
3111 | Lisp_Object last_child; | |
3112 | int child_size; | |
3113 | ||
3114 | for (child = *forward; !NILP (child); child = c->next) | |
3115 | { | |
3116 | c = XWINDOW (child); | |
3117 | last_child = child; | |
3118 | } | |
3119 | ||
3120 | child_size = XINT (width_p ? c->total_cols : c->total_lines); | |
3121 | size_window (last_child, | |
3122 | size - old_size + child_size, | |
3123 | width_p, nodelete_p, first_only, last_only); | |
3124 | } | |
3125 | else if (!NILP (*forward) && first_only) | |
3126 | { | |
3127 | /* Change the first in a series of siblings. */ | |
3128 | int child_size; | |
3129 | ||
3130 | child = *forward; | |
3131 | c = XWINDOW (child); | |
3132 | ||
3133 | if (width_p) | |
3134 | c->left_col = w->left_col; | |
3135 | else | |
3136 | c->top_line = w->top_line; | |
3137 | ||
3138 | child_size = XINT (width_p ? c->total_cols : c->total_lines); | |
3139 | size_window (child, | |
3140 | size - old_size + child_size, | |
3141 | width_p, nodelete_p, first_only, last_only); | |
3142 | } | |
233a4a2c | 3143 | else if (!NILP (*forward)) |
7ab12479 | 3144 | { |
233a4a2c GM |
3145 | int fixed_size, each, extra, n; |
3146 | int resize_fixed_p, nfixed; | |
8b6d9dc9 | 3147 | int last_pos, first_pos, nchildren, total; |
6b61353c | 3148 | int *new_sizes = NULL; |
233a4a2c | 3149 | |
5fe0b054 | 3150 | /* Determine the fixed-size portion of this window, and the |
233a4a2c | 3151 | number of child windows. */ |
8b6d9dc9 | 3152 | fixed_size = nchildren = nfixed = total = 0; |
233a4a2c | 3153 | for (child = *forward; !NILP (child); child = c->next, ++nchildren) |
7ab12479 | 3154 | { |
8b6d9dc9 | 3155 | int child_size; |
177c0ea7 | 3156 | |
7ab12479 | 3157 | c = XWINDOW (child); |
949cf20f | 3158 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); |
8b6d9dc9 | 3159 | total += child_size; |
177c0ea7 | 3160 | |
233a4a2c GM |
3161 | if (window_fixed_size_p (c, width_p, 0)) |
3162 | { | |
8b6d9dc9 | 3163 | fixed_size += child_size; |
233a4a2c GM |
3164 | ++nfixed; |
3165 | } | |
3166 | } | |
7ab12479 | 3167 | |
233a4a2c GM |
3168 | /* If the new size is smaller than fixed_size, or if there |
3169 | aren't any resizable windows, allow resizing fixed-size | |
3170 | windows. */ | |
3171 | resize_fixed_p = nfixed == nchildren || size < fixed_size; | |
3172 | ||
6b61353c | 3173 | /* Compute how many lines/columns to add/remove to each child. The |
233a4a2c GM |
3174 | value of extra takes care of rounding errors. */ |
3175 | n = resize_fixed_p ? nchildren : nchildren - nfixed; | |
6b61353c KH |
3176 | if (size < total && n > 1) |
3177 | new_sizes = shrink_windows (total, size, nchildren, n, min_size, | |
3178 | resize_fixed_p, *forward, width_p); | |
3179 | else | |
3180 | { | |
3181 | each = (size - total) / n; | |
3182 | extra = (size - total) - n * each; | |
3183 | } | |
233a4a2c GM |
3184 | |
3185 | /* Compute new children heights and edge positions. */ | |
949cf20f | 3186 | first_pos = width_p ? XINT (w->left_col) : XINT (w->top_line); |
233a4a2c | 3187 | last_pos = first_pos; |
6b61353c | 3188 | for (n = 0, child = *forward; !NILP (child); child = c->next, ++n) |
233a4a2c GM |
3189 | { |
3190 | int new_size, old_size; | |
177c0ea7 | 3191 | |
233a4a2c | 3192 | c = XWINDOW (child); |
949cf20f | 3193 | old_size = width_p ? XFASTINT (c->total_cols) : XFASTINT (c->total_lines); |
233a4a2c | 3194 | new_size = old_size; |
7ab12479 | 3195 | |
233a4a2c GM |
3196 | /* The top or left edge position of this child equals the |
3197 | bottom or right edge of its predecessor. */ | |
3198 | if (width_p) | |
949cf20f | 3199 | c->left_col = make_number (last_pos); |
233a4a2c | 3200 | else |
949cf20f | 3201 | c->top_line = make_number (last_pos); |
7ab12479 | 3202 | |
233a4a2c GM |
3203 | /* If this child can be resized, do it. */ |
3204 | if (resize_fixed_p || !window_fixed_size_p (c, width_p, 0)) | |
3205 | { | |
6b61353c | 3206 | new_size = new_sizes ? new_sizes[n] : old_size + each + extra; |
233a4a2c GM |
3207 | extra = 0; |
3208 | } | |
177c0ea7 | 3209 | |
233a4a2c GM |
3210 | /* Set new height. Note that size_window also propagates |
3211 | edge positions to children, so it's not a no-op if we | |
3212 | didn't change the child's size. */ | |
5fe0b054 | 3213 | size_window (child, new_size, width_p, 1, first_only, last_only); |
233a4a2c GM |
3214 | |
3215 | /* Remember the bottom/right edge position of this child; it | |
3216 | will be used to set the top/left edge of the next child. */ | |
6b61353c | 3217 | last_pos += new_size; |
7ab12479 | 3218 | } |
233a4a2c | 3219 | |
6b61353c KH |
3220 | if (new_sizes) xfree (new_sizes); |
3221 | ||
233a4a2c GM |
3222 | /* We should have covered the parent exactly with child windows. */ |
3223 | xassert (size == last_pos - first_pos); | |
177c0ea7 | 3224 | |
7ab12479 | 3225 | /* Now delete any children that became too small. */ |
233a4a2c GM |
3226 | if (!nodelete_p) |
3227 | for (child = *forward; !NILP (child); child = c->next) | |
7ab12479 | 3228 | { |
233a4a2c GM |
3229 | int child_size; |
3230 | c = XWINDOW (child); | |
949cf20f | 3231 | child_size = width_p ? XINT (c->total_cols) : XINT (c->total_lines); |
5fe0b054 | 3232 | size_window (child, child_size, width_p, 2, first_only, last_only); |
7ab12479 JB |
3233 | } |
3234 | } | |
3235 | } | |
3236 | ||
233a4a2c GM |
3237 | /* Set WINDOW's height to HEIGHT, and recursively change the height of |
3238 | WINDOW's children. NODELETE non-zero means don't delete windows | |
3239 | that become too small in the process. (The caller should check | |
3240 | later and do so if appropriate.) */ | |
7ab12479 | 3241 | |
5e14b1fc | 3242 | void |
233a4a2c | 3243 | set_window_height (window, height, nodelete) |
7ab12479 | 3244 | Lisp_Object window; |
233a4a2c | 3245 | int height; |
7ab12479 JB |
3246 | int nodelete; |
3247 | { | |
5fe0b054 | 3248 | size_window (window, height, 0, nodelete, 0, 0); |
233a4a2c | 3249 | } |
7ab12479 | 3250 | |
7ab12479 | 3251 | |
233a4a2c GM |
3252 | /* Set WINDOW's width to WIDTH, and recursively change the width of |
3253 | WINDOW's children. NODELETE non-zero means don't delete windows | |
3254 | that become too small in the process. (The caller should check | |
3255 | later and do so if appropriate.) */ | |
7ab12479 | 3256 | |
233a4a2c GM |
3257 | void |
3258 | set_window_width (window, width, nodelete) | |
3259 | Lisp_Object window; | |
3260 | int width; | |
3261 | int nodelete; | |
3262 | { | |
5fe0b054 | 3263 | size_window (window, width, 1, nodelete, 0, 0); |
7ab12479 | 3264 | } |
233a4a2c | 3265 | |
cdbc7fec KS |
3266 | /* Change window heights in windows rooted in WINDOW by N lines. */ |
3267 | ||
3268 | void | |
3269 | change_window_heights (window, n) | |
3270 | Lisp_Object window; | |
3271 | int n; | |
3272 | { | |
3273 | struct window *w = XWINDOW (window); | |
3274 | ||
949cf20f KS |
3275 | XSETFASTINT (w->top_line, XFASTINT (w->top_line) + n); |
3276 | XSETFASTINT (w->total_lines, XFASTINT (w->total_lines) - n); | |
cdbc7fec | 3277 | |
949cf20f KS |
3278 | if (INTEGERP (w->orig_top_line)) |
3279 | XSETFASTINT (w->orig_top_line, XFASTINT (w->orig_top_line) + n); | |
3280 | if (INTEGERP (w->orig_total_lines)) | |
3281 | XSETFASTINT (w->orig_total_lines, XFASTINT (w->orig_total_lines) - n); | |
cdbc7fec KS |
3282 | |
3283 | /* Handle just the top child in a vertical split. */ | |
3284 | if (!NILP (w->vchild)) | |
3285 | change_window_heights (w->vchild, n); | |
3286 | ||
3287 | /* Adjust all children in a horizontal split. */ | |
3288 | for (window = w->hchild; !NILP (window); window = w->next) | |
3289 | { | |
3290 | w = XWINDOW (window); | |
3291 | change_window_heights (window, n); | |
3292 | } | |
3293 | } | |
3294 | ||
7ab12479 | 3295 | \f |
1d8d96fa | 3296 | int window_select_count; |
7ab12479 | 3297 | |
5b03d3c0 RS |
3298 | Lisp_Object |
3299 | Fset_window_buffer_unwind (obuf) | |
3300 | Lisp_Object obuf; | |
3301 | { | |
3302 | Fset_buffer (obuf); | |
3303 | return Qnil; | |
3304 | } | |
3305 | ||
56613f06 SM |
3306 | EXFUN (Fset_window_fringes, 4); |
3307 | EXFUN (Fset_window_scroll_bars, 4); | |
7ab12479 | 3308 | |
6a44ffb3 SM |
3309 | static void |
3310 | run_funs (Lisp_Object funs) | |
3311 | { | |
3312 | for (; CONSP (funs); funs = XCDR (funs)) | |
3313 | if (!EQ (XCAR (funs), Qt)) | |
3314 | call0 (XCAR (funs)); | |
3315 | } | |
3316 | ||
3317 | static Lisp_Object select_window_norecord (Lisp_Object window); | |
3318 | ||
ef264c42 SM |
3319 | void |
3320 | run_window_configuration_change_hook (struct frame *f) | |
3321 | { | |
ef264c42 | 3322 | int count = SPECPDL_INDEX (); |
6a44ffb3 SM |
3323 | Lisp_Object frame, global_wcch |
3324 | = Fdefault_value (Qwindow_configuration_change_hook); | |
3325 | XSETFRAME (frame, f); | |
3326 | ||
3327 | if (NILP (Vrun_hooks)) | |
3328 | return; | |
3329 | ||
ef264c42 SM |
3330 | if (SELECTED_FRAME () != f) |
3331 | { | |
ef264c42 SM |
3332 | record_unwind_protect (Fselect_frame, Fselected_frame ()); |
3333 | Fselect_frame (frame); | |
3334 | } | |
6a44ffb3 SM |
3335 | |
3336 | /* Use the right buffer. Matters when running the local hooks. */ | |
3337 | if (current_buffer != XBUFFER (Fwindow_buffer (Qnil))) | |
3338 | { | |
3339 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
3340 | Fset_buffer (Fwindow_buffer (Qnil)); | |
3341 | } | |
3342 | ||
3343 | /* Look for buffer-local values. */ | |
3344 | { | |
3345 | Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil); | |
3346 | for (; CONSP (windows); windows = XCDR (windows)) | |
3347 | { | |
3348 | Lisp_Object window = XCAR (windows); | |
3349 | Lisp_Object buffer = Fwindow_buffer (window); | |
3350 | if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook, | |
3351 | buffer))) | |
3352 | { | |
3353 | int count = SPECPDL_INDEX (); | |
3354 | record_unwind_protect (select_window_norecord, Fselected_window ()); | |
3355 | select_window_norecord (window); | |
3356 | run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook, | |
3357 | buffer)); | |
ef264c42 SM |
3358 | unbind_to (count, Qnil); |
3359 | } | |
6a44ffb3 SM |
3360 | } |
3361 | } | |
3362 | ||
3363 | run_funs (global_wcch); | |
3364 | unbind_to (count, Qnil); | |
ef264c42 SM |
3365 | } |
3366 | ||
5500c422 GM |
3367 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3368 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3369 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3370 | margins, fringes, and scroll-bar settings of the window are not | |
3371 | reset from the buffer's local settings. */ | |
7ab12479 | 3372 | |
5500c422 | 3373 | void |
949cf20f | 3374 | set_window_buffer (window, buffer, run_hooks_p, keep_margins_p) |
5500c422 | 3375 | Lisp_Object window, buffer; |
949cf20f | 3376 | int run_hooks_p, keep_margins_p; |
5500c422 GM |
3377 | { |
3378 | struct window *w = XWINDOW (window); | |
3379 | struct buffer *b = XBUFFER (buffer); | |
aed13378 | 3380 | int count = SPECPDL_INDEX (); |
c3b232e4 | 3381 | int samebuf = EQ (buffer, w->buffer); |
7ab12479 JB |
3382 | |
3383 | w->buffer = buffer; | |
86e48436 RS |
3384 | |
3385 | if (EQ (window, selected_window)) | |
5500c422 | 3386 | b->last_selected_window = window; |
beb4e312 | 3387 | |
c49a0495 KS |
3388 | /* Let redisplay errors through. */ |
3389 | b->display_error_modiff = 0; | |
3390 | ||
beb4e312 | 3391 | /* Update time stamps of buffer display. */ |
5500c422 GM |
3392 | if (INTEGERP (b->display_count)) |
3393 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
3394 | b->display_time = Fcurrent_time (); | |
86e48436 | 3395 | |
d834a2e9 | 3396 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 GM |
3397 | XSETFASTINT (w->window_end_vpos, 0); |
3398 | bzero (&w->last_cursor, sizeof w->last_cursor); | |
5a41ab94 | 3399 | w->window_end_valid = Qnil; |
c3b232e4 SM |
3400 | if (!(keep_margins_p && samebuf)) |
3401 | { /* If we're not actually changing the buffer, Don't reset hscroll and | |
3402 | vscroll. This case happens for example when called from | |
3403 | change_frame_size_1, where we use a dummy call to | |
3404 | Fset_window_buffer on the frame's selected window (and no other) | |
3405 | just in order to run window-configuration-change-hook. | |
3406 | Resetting hscroll and vscroll here is problematic for things like | |
3407 | image-mode and doc-view-mode since it resets the image's position | |
3408 | whenever we resize the frame. */ | |
3409 | w->hscroll = w->min_hscroll = make_number (0); | |
3410 | w->vscroll = 0; | |
3411 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); | |
3412 | set_marker_restricted (w->start, | |
3413 | make_number (b->last_window_start), | |
3414 | buffer); | |
3415 | w->start_at_line_beg = Qnil; | |
3416 | w->force_start = Qnil; | |
3417 | XSETFASTINT (w->last_modified, 0); | |
3418 | XSETFASTINT (w->last_overlay_modified, 0); | |
3419 | } | |
3420 | /* Maybe we could move this into the `if' but it's not obviously safe and | |
3421 | I doubt it's worth the trouble. */ | |
7ab12479 | 3422 | windows_or_buffers_changed++; |
5b03d3c0 RS |
3423 | |
3424 | /* We must select BUFFER for running the window-scroll-functions. | |
3425 | If WINDOW is selected, switch permanently. | |
3426 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
3427 | if (EQ (window, selected_window)) |
3428 | Fset_buffer (buffer); | |
5b03d3c0 RS |
3429 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3430 | because that might itself be a local variable. */ | |
3431 | else if (window_initialized) | |
3432 | { | |
3433 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
3434 | Fset_buffer (buffer); | |
3435 | } | |
3436 | ||
949cf20f KS |
3437 | if (!keep_margins_p) |
3438 | { | |
3439 | /* Set left and right marginal area width etc. from buffer. */ | |
3440 | ||
79fd290e | 3441 | /* This may call adjust_window_margins three times, so |
949cf20f | 3442 | temporarily disable window margins. */ |
6b61353c KH |
3443 | Lisp_Object save_left = w->left_margin_cols; |
3444 | Lisp_Object save_right = w->right_margin_cols; | |
3445 | ||
949cf20f KS |
3446 | w->left_margin_cols = w->right_margin_cols = Qnil; |
3447 | ||
3448 | Fset_window_fringes (window, | |
3449 | b->left_fringe_width, b->right_fringe_width, | |
3450 | b->fringes_outside_margins); | |
3451 | ||
3452 | Fset_window_scroll_bars (window, | |
3453 | b->scroll_bar_width, | |
3454 | b->vertical_scroll_bar_type, Qnil); | |
3455 | ||
6b61353c KH |
3456 | w->left_margin_cols = save_left; |
3457 | w->right_margin_cols = save_right; | |
3458 | ||
949cf20f KS |
3459 | Fset_window_margins (window, |
3460 | b->left_margin_cols, b->right_margin_cols); | |
3461 | } | |
7ab12479 | 3462 | |
5500c422 GM |
3463 | if (run_hooks_p) |
3464 | { | |
3465 | if (! NILP (Vwindow_scroll_functions)) | |
3466 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
3467 | Fmarker_position (w->start)); | |
ef264c42 | 3468 | run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w))); |
5500c422 | 3469 | } |
543f5fb1 | 3470 | |
5b03d3c0 | 3471 | unbind_to (count, Qnil); |
5500c422 | 3472 | } |
5b03d3c0 | 3473 | |
5500c422 | 3474 | |
949cf20f | 3475 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
fdb82f93 | 3476 | doc: /* Make WINDOW display BUFFER as its contents. |
c2755926 | 3477 | BUFFER can be a buffer or the name of an existing buffer. |
ab80314b | 3478 | Optional third arg KEEP-MARGINS non-nil means that WINDOW's current |
949cf20f KS |
3479 | display margins, fringe widths, and scroll bar settings are maintained; |
3480 | the default is to reset these from BUFFER's local settings or the frame | |
6cb4a892 RS |
3481 | defaults. |
3482 | ||
3483 | This function runs the hook `window-scroll-functions'. */) | |
949cf20f | 3484 | (window, buffer, keep_margins) |
56613f06 | 3485 | register Lisp_Object window, buffer, keep_margins; |
5500c422 GM |
3486 | { |
3487 | register Lisp_Object tem; | |
3488 | register struct window *w = decode_window (window); | |
5500c422 | 3489 | |
bed0c171 | 3490 | XSETWINDOW (window, w); |
5500c422 | 3491 | buffer = Fget_buffer (buffer); |
b7826503 | 3492 | CHECK_BUFFER (buffer); |
5500c422 GM |
3493 | |
3494 | if (NILP (XBUFFER (buffer)->name)) | |
3495 | error ("Attempt to display deleted buffer"); | |
3496 | ||
3497 | tem = w->buffer; | |
3498 | if (NILP (tem)) | |
3499 | error ("Window is deleted"); | |
3500 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
3501 | is first being set up. */ | |
3502 | { | |
3503 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) | |
3504 | error ("Window is dedicated to `%s'", | |
d5db4077 | 3505 | SDATA (XBUFFER (tem)->name)); |
5500c422 GM |
3506 | |
3507 | unshow_buffer (w); | |
3508 | } | |
3509 | ||
949cf20f | 3510 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 JB |
3511 | return Qnil; |
3512 | } | |
3513 | ||
2d0834cc SM |
3514 | /* Note that selected_window can be nil |
3515 | when this is called from Fset_window_configuration. */ | |
3516 | ||
14d87dc9 | 3517 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, |
fdb82f93 | 3518 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. |
e963215c | 3519 | If WINDOW is not already selected, make WINDOW's buffer current |
c2755926 | 3520 | and make WINDOW the frame's selected window. Return WINDOW. |
14d87dc9 SM |
3521 | Optional second arg NORECORD non-nil means |
3522 | do not put this buffer at the front of the list of recently selected ones. | |
282f7831 | 3523 | |
fdb82f93 PJ |
3524 | Note that the main editor command loop |
3525 | selects the buffer of the selected window before each command. */) | |
14d87dc9 SM |
3526 | (window, norecord) |
3527 | register Lisp_Object window, norecord; | |
7ab12479 JB |
3528 | { |
3529 | register struct window *w; | |
719eaeb1 | 3530 | register struct window *ow; |
1ae1a37d | 3531 | struct frame *sf; |
7ab12479 | 3532 | |
b7826503 | 3533 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3534 | |
3535 | w = XWINDOW (window); | |
50e88778 | 3536 | w->frozen_window_start_p = 0; |
7ab12479 | 3537 | |
2a1893f4 SM |
3538 | ++window_select_count; |
3539 | XSETFASTINT (w->use_time, window_select_count); | |
7ab12479 JB |
3540 | if (EQ (window, selected_window)) |
3541 | return window; | |
3542 | ||
ca2d5566 SM |
3543 | sf = SELECTED_FRAME (); |
3544 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
3545 | { | |
3546 | XFRAME (WINDOW_FRAME (w))->selected_window = window; | |
3547 | /* Use this rather than Fhandle_switch_frame | |
3548 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
3549 | move around in the state where a minibuffer in a separate | |
3550 | frame is active. */ | |
3551 | Fselect_frame (WINDOW_FRAME (w)); | |
3552 | /* Fselect_frame called us back so we've done all the work already. */ | |
3553 | eassert (EQ (window, selected_window)); | |
3554 | return window; | |
3555 | } | |
3556 | else | |
3557 | sf->selected_window = window; | |
3558 | ||
a46c0153 RS |
3559 | /* Store the current buffer's actual point into the |
3560 | old selected window. It belongs to that window, | |
3561 | and when the window is not selected, must be in the window. */ | |
719eaeb1 GM |
3562 | if (!NILP (selected_window)) |
3563 | { | |
3564 | ow = XWINDOW (selected_window); | |
3565 | if (! NILP (ow->buffer)) | |
3566 | set_marker_both (ow->pointm, ow->buffer, | |
3567 | BUF_PT (XBUFFER (ow->buffer)), | |
3568 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
3569 | } | |
7ab12479 JB |
3570 | |
3571 | selected_window = window; | |
7ab12479 | 3572 | |
14d87dc9 | 3573 | if (NILP (norecord)) |
b7354ddf | 3574 | record_buffer (w->buffer); |
7ab12479 JB |
3575 | Fset_buffer (w->buffer); |
3576 | ||
86e48436 RS |
3577 | XBUFFER (w->buffer)->last_selected_window = window; |
3578 | ||
7ab12479 JB |
3579 | /* Go to the point recorded in the window. |
3580 | This is important when the buffer is in more | |
3581 | than one window. It also matters when | |
3582 | redisplay_window has altered point after scrolling, | |
3583 | because it makes the change only in the window. */ | |
3584 | { | |
3585 | register int new_point = marker_position (w->pointm); | |
3586 | if (new_point < BEGV) | |
3587 | SET_PT (BEGV); | |
a9c95e08 | 3588 | else if (new_point > ZV) |
7ab12479 JB |
3589 | SET_PT (ZV); |
3590 | else | |
3591 | SET_PT (new_point); | |
3592 | } | |
3593 | ||
3594 | windows_or_buffers_changed++; | |
3595 | return window; | |
3596 | } | |
14d87dc9 SM |
3597 | |
3598 | static Lisp_Object | |
3599 | select_window_norecord (window) | |
3600 | Lisp_Object window; | |
3601 | { | |
3602 | return Fselect_window (window, Qt); | |
3603 | } | |
b7354ddf | 3604 | \f |
441a127e RS |
3605 | /* Deiconify the frame containing the window WINDOW, |
3606 | unless it is the selected frame; | |
3607 | then return WINDOW. | |
3608 | ||
3609 | The reason for the exception for the selected frame | |
3610 | is that it seems better not to change the selected frames visibility | |
3611 | merely because of displaying a different buffer in it. | |
3612 | The deiconification is useful when a buffer gets shown in | |
3613 | another frame that you were not using lately. */ | |
d07f802a RS |
3614 | |
3615 | static Lisp_Object | |
3616 | display_buffer_1 (window) | |
3617 | Lisp_Object window; | |
3618 | { | |
1ae1a37d GM |
3619 | Lisp_Object frame = XWINDOW (window)->frame; |
3620 | FRAME_PTR f = XFRAME (frame); | |
177c0ea7 | 3621 | |
d07f802a | 3622 | FRAME_SAMPLE_VISIBILITY (f); |
177c0ea7 | 3623 | |
2d0834cc SM |
3624 | if (EQ (frame, selected_frame)) |
3625 | ; /* Assume the selected frame is already visible enough. */ | |
3626 | else if (minibuf_level > 0 | |
3627 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
3628 | && WINDOW_LIVE_P (minibuf_selected_window) | |
3629 | && EQ (frame, WINDOW_FRAME (XWINDOW (minibuf_selected_window)))) | |
3630 | ; /* Assume the frame from which we invoked the minibuffer is visible. */ | |
3631 | else | |
60117126 RS |
3632 | { |
3633 | if (FRAME_ICONIFIED_P (f)) | |
1ae1a37d | 3634 | Fmake_frame_visible (frame); |
37962e60 | 3635 | else if (FRAME_VISIBLE_P (f)) |
1ae1a37d | 3636 | Fraise_frame (frame); |
60117126 | 3637 | } |
177c0ea7 | 3638 | |
d07f802a RS |
3639 | return window; |
3640 | } | |
3641 | ||
4628f7a4 | 3642 | DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, |
d99b4859 | 3643 | doc: /* Returns non-nil if a buffer named BUFFER-NAME gets a special frame. |
c019856e RS |
3644 | If the value is t, `display-buffer' or `pop-to-buffer' would create a |
3645 | special frame for that buffer using the default frame parameters. | |
3646 | ||
3647 | If the value is a list, it is a list of frame parameters that would be used | |
d99b4859 RS |
3648 | to make a frame for that buffer. |
3649 | The variables `special-display-buffer-names' | |
3650 | and `special-display-regexps' control this. */) | |
fdb82f93 | 3651 | (buffer_name) |
4628f7a4 EN |
3652 | Lisp_Object buffer_name; |
3653 | { | |
3654 | Lisp_Object tem; | |
3655 | ||
b7826503 | 3656 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
3657 | |
3658 | tem = Fmember (buffer_name, Vspecial_display_buffer_names); | |
3659 | if (!NILP (tem)) | |
3660 | return Qt; | |
3661 | ||
3662 | tem = Fassoc (buffer_name, Vspecial_display_buffer_names); | |
3663 | if (!NILP (tem)) | |
3664 | return XCDR (tem); | |
3665 | ||
3666 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) | |
3667 | { | |
3668 | Lisp_Object car = XCAR (tem); | |
3669 | if (STRINGP (car) | |
3670 | && fast_string_match (car, buffer_name) >= 0) | |
3671 | return Qt; | |
3672 | else if (CONSP (car) | |
3673 | && STRINGP (XCAR (car)) | |
3674 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
0057b00a | 3675 | return XCDR (car); |
4628f7a4 EN |
3676 | } |
3677 | return Qnil; | |
177c0ea7 | 3678 | } |
4628f7a4 EN |
3679 | |
3680 | DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, | |
c019856e RS |
3681 | doc: /* Returns non-nil if a buffer named BUFFER-NAME would use the same window. |
3682 | More precisely, if `display-buffer' or `pop-to-buffer' would display | |
3683 | that buffer in the selected window rather than (as usual) in some other window. | |
fdb82f93 PJ |
3684 | See `same-window-buffer-names' and `same-window-regexps'. */) |
3685 | (buffer_name) | |
4628f7a4 EN |
3686 | Lisp_Object buffer_name; |
3687 | { | |
3688 | Lisp_Object tem; | |
3689 | ||
b7826503 | 3690 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
3691 | |
3692 | tem = Fmember (buffer_name, Vsame_window_buffer_names); | |
3693 | if (!NILP (tem)) | |
3694 | return Qt; | |
3695 | ||
3696 | tem = Fassoc (buffer_name, Vsame_window_buffer_names); | |
3697 | if (!NILP (tem)) | |
3698 | return Qt; | |
3699 | ||
3700 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) | |
3701 | { | |
3702 | Lisp_Object car = XCAR (tem); | |
3703 | if (STRINGP (car) | |
3704 | && fast_string_match (car, buffer_name) >= 0) | |
3705 | return Qt; | |
3706 | else if (CONSP (car) | |
3707 | && STRINGP (XCAR (car)) | |
3708 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
3709 | return Qt; | |
3710 | } | |
3711 | return Qnil; | |
3712 | } | |
3713 | ||
fdb82f93 | 3714 | /* Use B so the default is (other-buffer). */ |
53f76081 | 3715 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 3, |
fdb82f93 PJ |
3716 | "BDisplay buffer: \nP", |
3717 | doc: /* Make BUFFER appear in some window but don't select it. | |
473d3c06 | 3718 | BUFFER must be the name of an existing buffer, or, when called from Lisp, |
c2755926 | 3719 | a buffer. |
fdb82f93 PJ |
3720 | If BUFFER is shown already in some window, just use that one, |
3721 | unless the window is the selected window and the optional second | |
3722 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg). | |
3723 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER. | |
3724 | Returns the window displaying BUFFER. | |
079d288f | 3725 | If `display-buffer-reuse-frames' is non-nil, and another frame is currently |
fdb82f93 PJ |
3726 | displaying BUFFER, then simply raise that frame. |
3727 | ||
6b61353c KH |
3728 | The variables `special-display-buffer-names', |
3729 | `special-display-regexps', `same-window-buffer-names', and | |
3730 | `same-window-regexps' customize how certain buffer names are handled. | |
9297079e | 3731 | The latter two take effect only if NOT-THIS-WINDOW is nil. |
fdb82f93 | 3732 | |
3c9bbf9f RS |
3733 | If optional argument FRAME is `visible', check all visible frames |
3734 | for a window to use. | |
3735 | If FRAME is 0, check all visible and iconified frames. | |
3736 | If FRAME is t, check all frames. | |
3737 | If FRAME is a frame, check only that frame. | |
3738 | If FRAME is nil, check only the selected frame | |
fdb82f93 PJ |
3739 | (actually the last nonminibuffer frame), |
3740 | unless `pop-up-frames' or `display-buffer-reuse-frames' is non-nil, | |
3741 | which means search visible and iconified frames. | |
3742 | ||
876e2665 GM |
3743 | If a full-width window on a splittable frame is available to display |
3744 | the buffer, it may be split, subject to the value of the variable | |
3745 | `split-height-threshold'. | |
3746 | ||
fdb82f93 PJ |
3747 | If `even-window-heights' is non-nil, window heights will be evened out |
3748 | if displaying the buffer causes two vertically adjacent windows to be | |
3749 | displayed. */) | |
3750 | (buffer, not_this_window, frame) | |
92f94a12 | 3751 | Lisp_Object buffer, not_this_window, frame; |
7ab12479 | 3752 | { |
aee631c2 | 3753 | register Lisp_Object window, tem, swp; |
1ae1a37d | 3754 | struct frame *f; |
7ab12479 | 3755 | |
aee631c2 | 3756 | swp = Qnil; |
7ab12479 | 3757 | buffer = Fget_buffer (buffer); |
b7826503 | 3758 | CHECK_BUFFER (buffer); |
7ab12479 | 3759 | |
265a9e55 | 3760 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
3761 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
3762 | ||
265a9e55 | 3763 | if (NILP (not_this_window) |
7ab12479 | 3764 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 3765 | return display_buffer_1 (selected_window); |
7ab12479 | 3766 | |
855d8627 RS |
3767 | /* See if the user has specified this buffer should appear |
3768 | in the selected window. */ | |
3769 | if (NILP (not_this_window)) | |
3770 | { | |
aee631c2 RS |
3771 | swp = Fsame_window_p (XBUFFER (buffer)->name); |
3772 | if (!NILP (swp) && !no_switch_window (selected_window)) | |
c63dc4a2 RS |
3773 | { |
3774 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 3775 | return display_buffer_1 (selected_window); |
c63dc4a2 | 3776 | } |
855d8627 RS |
3777 | } |
3778 | ||
079d288f | 3779 | /* If the user wants pop-up-frames or display-buffer-reuse-frames, |
73dc5198 KH |
3780 | look for a window showing BUFFER on any visible or iconified frame. |
3781 | Otherwise search only the current frame. */ | |
53f76081 RS |
3782 | if (! NILP (frame)) |
3783 | tem = frame; | |
9c3da604 GM |
3784 | else if (pop_up_frames |
3785 | || display_buffer_reuse_frames | |
3786 | || last_nonminibuf_frame == 0) | |
73dc5198 KH |
3787 | XSETFASTINT (tem, 0); |
3788 | else | |
73dc5198 | 3789 | XSETFRAME (tem, last_nonminibuf_frame); |
177c0ea7 | 3790 | |
73dc5198 | 3791 | window = Fget_buffer_window (buffer, tem); |
265a9e55 JB |
3792 | if (!NILP (window) |
3793 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
9c3da604 | 3794 | return display_buffer_1 (window); |
7ab12479 | 3795 | |
a90712c2 | 3796 | /* Certain buffer names get special handling. */ |
aee631c2 | 3797 | if (!NILP (Vspecial_display_function) && NILP (swp)) |
a90712c2 | 3798 | { |
4628f7a4 EN |
3799 | tem = Fspecial_display_p (XBUFFER (buffer)->name); |
3800 | if (EQ (tem, Qt)) | |
a90712c2 | 3801 | return call1 (Vspecial_display_function, buffer); |
4628f7a4 EN |
3802 | if (CONSP (tem)) |
3803 | return call2 (Vspecial_display_function, buffer, tem); | |
a90712c2 RS |
3804 | } |
3805 | ||
44fa5b1e JB |
3806 | /* If there are no frames open that have more than a minibuffer, |
3807 | we need to create a new frame. */ | |
3808 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 3809 | { |
a90712c2 | 3810 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
949cf20f | 3811 | Fset_window_buffer (window, buffer, Qnil); |
d07f802a | 3812 | return display_buffer_1 (window); |
7ab12479 | 3813 | } |
7ab12479 | 3814 | |
1ae1a37d | 3815 | f = SELECTED_FRAME (); |
43bad991 | 3816 | if (pop_up_windows |
1ae1a37d | 3817 | || FRAME_MINIBUF_ONLY_P (f) |
cee67da9 RS |
3818 | /* If the current frame is a special display frame, |
3819 | don't try to reuse its windows. */ | |
1ae1a37d | 3820 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f))->dedicated)) |
7ab12479 | 3821 | { |
12cae7c0 | 3822 | Lisp_Object frames; |
90ab5c62 SM |
3823 | struct gcpro gcpro1; |
3824 | GCPRO1 (buffer); | |
12cae7c0 | 3825 | |
37962e60 | 3826 | frames = Qnil; |
1ae1a37d | 3827 | if (FRAME_MINIBUF_ONLY_P (f)) |
74112613 | 3828 | XSETFRAME (frames, last_nonminibuf_frame); |
7ab12479 | 3829 | |
cee67da9 RS |
3830 | /* Note that both Fget_largest_window and Fget_lru_window |
3831 | ignore minibuffers and dedicated windows. | |
3832 | This means they can return nil. */ | |
7ab12479 | 3833 | |
cee67da9 RS |
3834 | /* If the frame we would try to split cannot be split, |
3835 | try other frames. */ | |
1ae1a37d | 3836 | if (FRAME_NO_SPLIT_P (NILP (frames) ? f : last_nonminibuf_frame)) |
cee67da9 RS |
3837 | { |
3838 | /* Try visible frames first. */ | |
3cbb13c8 | 3839 | window = Fget_largest_window (Qvisible, Qt); |
cee67da9 RS |
3840 | /* If that didn't work, try iconified frames. */ |
3841 | if (NILP (window)) | |
3cbb13c8 SM |
3842 | window = Fget_largest_window (make_number (0), Qt); |
3843 | #if 0 /* Don't try windows on other displays. */ | |
cee67da9 | 3844 | if (NILP (window)) |
3cbb13c8 SM |
3845 | window = Fget_largest_window (Qt, Qt); |
3846 | #endif | |
cee67da9 RS |
3847 | } |
3848 | else | |
3cbb13c8 | 3849 | window = Fget_largest_window (frames, Qt); |
cee67da9 | 3850 | |
e99c7806 | 3851 | tem = Qnil; |
7ae6d1d1 JL |
3852 | if (!NILP (Vsplit_window_preferred_function)) |
3853 | tem = call1 (Vsplit_window_preferred_function, window); | |
3854 | ||
3855 | if (!NILP (tem)) | |
3856 | window = tem; | |
3857 | else | |
3858 | /* If the largest window is tall enough, full-width, and either eligible | |
3859 | for splitting or the only window, split it. */ | |
3860 | if (!NILP (window) | |
3861 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) | |
3862 | && WINDOW_FULL_WIDTH_P (XWINDOW (window)) | |
3863 | && (window_height (window) >= split_height_threshold | |
3864 | || (NILP (XWINDOW (window)->parent))) | |
3865 | && (window_height (window) | |
3866 | >= (2 * window_min_size_2 (XWINDOW (window), 0)))) | |
3867 | window = Fsplit_window (window, Qnil, Qnil); | |
7ab12479 JB |
3868 | else |
3869 | { | |
7ab8da68 | 3870 | Lisp_Object upper, other; |
1942f68f | 3871 | |
3cbb13c8 | 3872 | window = Fget_lru_window (frames, Qt); |
1971a872 RF |
3873 | /* If the LRU window is tall enough, and either eligible for |
3874 | splitting and selected or the only window, split it. */ | |
cee67da9 | 3875 | if (!NILP (window) |
92cca945 | 3876 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
7ae6d1d1 JL |
3877 | && ((EQ (window, selected_window) |
3878 | && window_height (window) >= split_height_threshold) | |
3879 | || (NILP (XWINDOW (window)->parent))) | |
3880 | && (window_height (window) | |
3881 | >= (2 * window_min_size_2 (XWINDOW (window), 0)))) | |
3882 | window = Fsplit_window (window, Qnil, Qnil); | |
49e99345 SM |
3883 | else |
3884 | window = Fget_lru_window (frames, Qnil); | |
cee67da9 | 3885 | /* If Fget_lru_window returned nil, try other approaches. */ |
48d9379d | 3886 | |
cee67da9 | 3887 | /* Try visible frames first. */ |
48d9379d RS |
3888 | if (NILP (window)) |
3889 | window = Fget_buffer_window (buffer, Qvisible); | |
cee67da9 | 3890 | if (NILP (window)) |
3cbb13c8 | 3891 | window = Fget_largest_window (Qvisible, Qnil); |
cee67da9 | 3892 | /* If that didn't work, try iconified frames. */ |
48d9379d RS |
3893 | if (NILP (window)) |
3894 | window = Fget_buffer_window (buffer, make_number (0)); | |
cee67da9 | 3895 | if (NILP (window)) |
3cbb13c8 SM |
3896 | window = Fget_largest_window (make_number (0), Qnil); |
3897 | ||
3898 | #if 0 /* Don't try frames on other displays. */ | |
48d9379d RS |
3899 | if (NILP (window)) |
3900 | window = Fget_buffer_window (buffer, Qt); | |
cee67da9 | 3901 | if (NILP (window)) |
3cbb13c8 SM |
3902 | window = Fget_largest_window (Qt, Qnil); |
3903 | #endif | |
cee67da9 RS |
3904 | /* As a last resort, make a new frame. */ |
3905 | if (NILP (window)) | |
3906 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
3907 | /* If window appears above or below another, |
3908 | even out their heights. */ | |
7ab8da68 | 3909 | other = upper = Qnil; |
1942f68f | 3910 | if (!NILP (XWINDOW (window)->prev)) |
7ab8da68 | 3911 | other = upper = XWINDOW (window)->prev; |
1942f68f | 3912 | if (!NILP (XWINDOW (window)->next)) |
7ab8da68 | 3913 | other = XWINDOW (window)->next, upper = window; |
1942f68f | 3914 | if (!NILP (other) |
6529ed87 | 3915 | && !NILP (Veven_window_heights) |
1942f68f | 3916 | /* Check that OTHER and WINDOW are vertically arrayed. */ |
949cf20f KS |
3917 | && !EQ (XWINDOW (other)->top_line, XWINDOW (window)->top_line) |
3918 | && (XFASTINT (XWINDOW (other)->total_lines) | |
3919 | > XFASTINT (XWINDOW (window)->total_lines))) | |
1942f68f | 3920 | { |
949cf20f KS |
3921 | int total = (XFASTINT (XWINDOW (other)->total_lines) |
3922 | + XFASTINT (XWINDOW (window)->total_lines)); | |
86c8e823 | 3923 | enlarge_window (upper, |
949cf20f | 3924 | total / 2 - XFASTINT (XWINDOW (upper)->total_lines), |
56ebfae2 | 3925 | 0); |
1942f68f | 3926 | } |
7ab12479 | 3927 | } |
90ab5c62 | 3928 | UNGCPRO; |
7ab12479 JB |
3929 | } |
3930 | else | |
3cbb13c8 | 3931 | window = Fget_lru_window (Qnil, Qnil); |
7ab12479 | 3932 | |
949cf20f | 3933 | Fset_window_buffer (window, buffer, Qnil); |
d07f802a | 3934 | return display_buffer_1 (window); |
7ab12479 JB |
3935 | } |
3936 | ||
6b61353c KH |
3937 | |
3938 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, | |
3939 | 0, 1, 0, | |
5a1048a5 | 3940 | doc: /* Force all windows to be updated on next redisplay. |
6b61353c | 3941 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3942 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
6b61353c KH |
3943 | displaying that buffer. */) |
3944 | (object) | |
3945 | Lisp_Object object; | |
3946 | { | |
3947 | if (NILP (object)) | |
3948 | { | |
3949 | windows_or_buffers_changed++; | |
3950 | update_mode_lines++; | |
3951 | return Qt; | |
3952 | } | |
3953 | ||
3954 | if (WINDOWP (object)) | |
3955 | { | |
3956 | struct window *w = XWINDOW (object); | |
3957 | mark_window_display_accurate (object, 0); | |
3958 | w->update_mode_line = Qt; | |
3959 | if (BUFFERP (w->buffer)) | |
3960 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
3961 | ++update_mode_lines; | |
3962 | return Qt; | |
3963 | } | |
0cc1039f | 3964 | |
6b61353c KH |
3965 | if (STRINGP (object)) |
3966 | object = Fget_buffer (object); | |
3967 | if (BUFFERP (object) && !NILP (XBUFFER (object)->name)) | |
3968 | { | |
3969 | /* Walk all windows looking for buffer, and force update | |
3970 | of each of those windows. */ | |
3971 | ||
3972 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); | |
3973 | return NILP (object) ? Qnil : Qt; | |
3974 | } | |
3975 | ||
3976 | /* If nothing suitable was found, just return. | |
3977 | We could signal an error, but this feature will typically be used | |
3978 | asynchronously in timers or process sentinels, so we don't. */ | |
3979 | return Qnil; | |
3980 | } | |
3981 | ||
3982 | ||
7ab12479 JB |
3983 | void |
3984 | temp_output_buffer_show (buf) | |
3985 | register Lisp_Object buf; | |
3986 | { | |
3987 | register struct buffer *old = current_buffer; | |
3988 | register Lisp_Object window; | |
3989 | register struct window *w; | |
3990 | ||
bccd3dd1 RS |
3991 | XBUFFER (buf)->directory = current_buffer->directory; |
3992 | ||
7ab12479 | 3993 | Fset_buffer (buf); |
c6367666 | 3994 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3995 | BEGV = BEG; |
3996 | ZV = Z; | |
3997 | SET_PT (BEG); | |
06be4f85 | 3998 | #if 0 /* rms: there should be no reason for this. */ |
b1599b4c | 3999 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
06be4f85 | 4000 | #endif |
7ab12479 JB |
4001 | set_buffer_internal (old); |
4002 | ||
e67a1dea | 4003 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
4004 | call1 (Vtemp_buffer_show_function, buf); |
4005 | else | |
4006 | { | |
53f76081 | 4007 | window = Fdisplay_buffer (buf, Qnil, Qnil); |
7ab12479 | 4008 | |
1ae1a37d | 4009 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 4010 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
4011 | Vminibuf_scroll_window = window; |
4012 | w = XWINDOW (window); | |
d834a2e9 | 4013 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 4014 | XSETFASTINT (w->min_hscroll, 0); |
2d0834cc SM |
4015 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
4016 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 4017 | |
beb4e312 | 4018 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 4019 | and its buffer current. */ |
2d0834cc SM |
4020 | |
4021 | if (!NILP (Vrun_hooks) | |
4022 | && !NILP (Fboundp (Qtemp_buffer_show_hook)) | |
4023 | && !NILP (Fsymbol_value (Qtemp_buffer_show_hook))) | |
2cccc823 | 4024 | { |
2d0834cc SM |
4025 | int count = SPECPDL_INDEX (); |
4026 | Lisp_Object prev_window, prev_buffer; | |
4027 | prev_window = selected_window; | |
4028 | XSETBUFFER (prev_buffer, old); | |
0cc1039f | 4029 | |
2d0834cc SM |
4030 | /* Select the window that was chosen, for running the hook. |
4031 | Note: Both Fselect_window and select_window_norecord may | |
4032 | set-buffer to the buffer displayed in the window, | |
4033 | so we need to save the current buffer. --stef */ | |
4034 | record_unwind_protect (Fset_buffer, prev_buffer); | |
4035 | record_unwind_protect (select_window_norecord, prev_window); | |
4036 | Fselect_window (window, Qt); | |
4037 | Fset_buffer (w->buffer); | |
4038 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); | |
4039 | unbind_to (count, Qnil); | |
2cccc823 RS |
4040 | } |
4041 | } | |
7ab12479 JB |
4042 | } |
4043 | \f | |
dfcf069d | 4044 | static void |
7ab12479 JB |
4045 | make_dummy_parent (window) |
4046 | Lisp_Object window; | |
4047 | { | |
cffec418 | 4048 | Lisp_Object new; |
7ab12479 | 4049 | register struct window *o, *p; |
cffec418 | 4050 | int i; |
7ab12479 | 4051 | |
cffec418 | 4052 | o = XWINDOW (window); |
26605be9 | 4053 | p = allocate_window (); |
cffec418 | 4054 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
4055 | ((struct Lisp_Vector *) p)->contents[i] |
4056 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 4057 | XSETWINDOW (new, p); |
7ab12479 | 4058 | |
2a1893f4 SM |
4059 | ++sequence_number; |
4060 | XSETFASTINT (p->sequence_number, sequence_number); | |
7ab12479 JB |
4061 | |
4062 | /* Put new into window structure in place of window */ | |
4063 | replace_window (window, new); | |
4064 | ||
4065 | o->next = Qnil; | |
4066 | o->prev = Qnil; | |
4067 | o->vchild = Qnil; | |
4068 | o->hchild = Qnil; | |
4069 | o->parent = new; | |
4070 | ||
4071 | p->start = Qnil; | |
4072 | p->pointm = Qnil; | |
4073 | p->buffer = Qnil; | |
4074 | } | |
4075 | ||
4076 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
fdb82f93 PJ |
4077 | doc: /* Split WINDOW, putting SIZE lines in the first of the pair. |
4078 | WINDOW defaults to selected one and SIZE to half its size. | |
4079 | If optional third arg HORFLAG is non-nil, split side by side | |
4080 | and put SIZE columns in the first of the pair. In that case, | |
876e2665 | 4081 | SIZE includes that window's scroll bar, or the divider column to its right. |
c2755926 LT |
4082 | Interactively, all arguments are nil. |
4083 | ||
4084 | Returns the newly created window (which is the lower or rightmost one). | |
19ca94ce RS |
4085 | The upper or leftmost window is the original one, and remains selected |
4086 | if it was selected before. | |
4087 | ||
c2755926 | 4088 | See Info node `(elisp)Splitting Windows' for more details and examples.*/) |
fdb82f93 | 4089 | (window, size, horflag) |
77ae0fe3 | 4090 | Lisp_Object window, size, horflag; |
7ab12479 JB |
4091 | { |
4092 | register Lisp_Object new; | |
4093 | register struct window *o, *p; | |
c0807608 | 4094 | FRAME_PTR fo; |
77ae0fe3 | 4095 | register int size_int; |
7ab12479 | 4096 | |
265a9e55 | 4097 | if (NILP (window)) |
7ab12479 JB |
4098 | window = selected_window; |
4099 | else | |
b7826503 | 4100 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
4101 | |
4102 | o = XWINDOW (window); | |
c0807608 | 4103 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 4104 | |
77ae0fe3 | 4105 | if (NILP (size)) |
7ab12479 | 4106 | { |
265a9e55 | 4107 | if (!NILP (horflag)) |
c0807608 | 4108 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
4109 | the usable space in columns by two. |
4110 | We round up, since the left-hand window may include | |
4111 | a dividing line, while the right-hand may not. */ | |
949cf20f | 4112 | size_int = (XFASTINT (o->total_cols) + 1) >> 1; |
7ab12479 | 4113 | else |
949cf20f | 4114 | size_int = XFASTINT (o->total_lines) >> 1; |
7ab12479 JB |
4115 | } |
4116 | else | |
4117 | { | |
b7826503 | 4118 | CHECK_NUMBER (size); |
77ae0fe3 | 4119 | size_int = XINT (size); |
7ab12479 JB |
4120 | } |
4121 | ||
4122 | if (MINI_WINDOW_P (o)) | |
4123 | error ("Attempt to split minibuffer window"); | |
233a4a2c GM |
4124 | else if (window_fixed_size_p (o, !NILP (horflag), 0)) |
4125 | error ("Attempt to split fixed-size window"); | |
7ab12479 | 4126 | |
a481b3ea | 4127 | check_min_window_sizes (); |
7ab12479 | 4128 | |
265a9e55 | 4129 | if (NILP (horflag)) |
7ab12479 | 4130 | { |
f1de8c77 MR |
4131 | int window_safe_height = window_min_size_2 (o, 0); |
4132 | ||
4133 | if (size_int < window_safe_height) | |
77ae0fe3 | 4134 | error ("Window height %d too small (after splitting)", size_int); |
f1de8c77 | 4135 | if (size_int + window_safe_height > XFASTINT (o->total_lines)) |
37962e60 | 4136 | error ("Window height %d too small (after splitting)", |
949cf20f | 4137 | XFASTINT (o->total_lines) - size_int); |
265a9e55 JB |
4138 | if (NILP (o->parent) |
4139 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
4140 | { |
4141 | make_dummy_parent (window); | |
4142 | new = o->parent; | |
4143 | XWINDOW (new)->vchild = window; | |
4144 | } | |
4145 | } | |
4146 | else | |
4147 | { | |
f1de8c77 MR |
4148 | int window_safe_width = window_min_size_2 (o, 1); |
4149 | ||
4150 | if (size_int < window_safe_width) | |
77ae0fe3 | 4151 | error ("Window width %d too small (after splitting)", size_int); |
f1de8c77 | 4152 | if (size_int + window_safe_width > XFASTINT (o->total_cols)) |
37962e60 | 4153 | error ("Window width %d too small (after splitting)", |
949cf20f | 4154 | XFASTINT (o->total_cols) - size_int); |
265a9e55 JB |
4155 | if (NILP (o->parent) |
4156 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
4157 | { |
4158 | make_dummy_parent (window); | |
4159 | new = o->parent; | |
4160 | XWINDOW (new)->hchild = window; | |
4161 | } | |
4162 | } | |
4163 | ||
4164 | /* Now we know that window's parent is a vertical combination | |
4165 | if we are dividing vertically, or a horizontal combination | |
4166 | if we are making side-by-side windows */ | |
4167 | ||
4168 | windows_or_buffers_changed++; | |
c0807608 | 4169 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
4170 | new = make_window (); |
4171 | p = XWINDOW (new); | |
4172 | ||
44fa5b1e | 4173 | p->frame = o->frame; |
7ab12479 | 4174 | p->next = o->next; |
265a9e55 | 4175 | if (!NILP (p->next)) |
7ab12479 JB |
4176 | XWINDOW (p->next)->prev = new; |
4177 | p->prev = window; | |
4178 | o->next = new; | |
4179 | p->parent = o->parent; | |
4180 | p->buffer = Qt; | |
5500c422 GM |
4181 | p->window_end_valid = Qnil; |
4182 | bzero (&p->last_cursor, sizeof p->last_cursor); | |
7ab12479 | 4183 | |
949cf20f KS |
4184 | /* Duplicate special geometry settings. */ |
4185 | ||
4186 | p->left_margin_cols = o->left_margin_cols; | |
4187 | p->right_margin_cols = o->right_margin_cols; | |
4188 | p->left_fringe_width = o->left_fringe_width; | |
4189 | p->right_fringe_width = o->right_fringe_width; | |
4190 | p->fringes_outside_margins = o->fringes_outside_margins; | |
4191 | p->scroll_bar_width = o->scroll_bar_width; | |
4192 | p->vertical_scroll_bar_type = o->vertical_scroll_bar_type; | |
4193 | ||
44fa5b1e | 4194 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 4195 | |
265a9e55 | 4196 | if (!NILP (horflag)) |
7ab12479 | 4197 | { |
949cf20f KS |
4198 | p->total_lines = o->total_lines; |
4199 | p->top_line = o->top_line; | |
4200 | XSETFASTINT (p->total_cols, XFASTINT (o->total_cols) - size_int); | |
4201 | XSETFASTINT (o->total_cols, size_int); | |
4202 | XSETFASTINT (p->left_col, XFASTINT (o->left_col) + size_int); | |
4203 | adjust_window_margins (p); | |
4204 | adjust_window_margins (o); | |
7ab12479 JB |
4205 | } |
4206 | else | |
4207 | { | |
949cf20f KS |
4208 | p->left_col = o->left_col; |
4209 | p->total_cols = o->total_cols; | |
4210 | XSETFASTINT (p->total_lines, XFASTINT (o->total_lines) - size_int); | |
4211 | XSETFASTINT (o->total_lines, size_int); | |
4212 | XSETFASTINT (p->top_line, XFASTINT (o->top_line) + size_int); | |
7ab12479 JB |
4213 | } |
4214 | ||
5500c422 GM |
4215 | /* Adjust glyph matrices. */ |
4216 | adjust_glyphs (fo); | |
949cf20f KS |
4217 | |
4218 | Fset_window_buffer (new, o->buffer, Qt); | |
7ab12479 JB |
4219 | return new; |
4220 | } | |
4221 | \f | |
56ebfae2 | 4222 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", |
fdb82f93 PJ |
4223 | doc: /* Make current window ARG lines bigger. |
4224 | From program, optional second arg non-nil means grow sideways ARG columns. | |
f95284d2 | 4225 | Interactively, if an argument is not given, make the window one line bigger. |
5afc696a | 4226 | If HORIZONTAL is non-nil, enlarge horizontally instead of vertically. |
56ebfae2 RS |
4227 | This function can delete windows, even the second window, if they get |
4228 | too small. */) | |
4229 | (arg, horizontal) | |
4230 | Lisp_Object arg, horizontal; | |
7ab12479 | 4231 | { |
b7826503 | 4232 | CHECK_NUMBER (arg); |
56ebfae2 | 4233 | enlarge_window (selected_window, XINT (arg), !NILP (horizontal)); |
543f5fb1 | 4234 | |
eeca6f6f | 4235 | run_window_configuration_change_hook (SELECTED_FRAME ()); |
543f5fb1 | 4236 | |
7ab12479 JB |
4237 | return Qnil; |
4238 | } | |
4239 | ||
56ebfae2 | 4240 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", |
fdb82f93 PJ |
4241 | doc: /* Make current window ARG lines smaller. |
4242 | From program, optional second arg non-nil means shrink sideways arg columns. | |
4797b6d9 JB |
4243 | Interactively, if an argument is not given, make the window one line smaller. |
4244 | Only siblings to the right or below are changed. */) | |
56ebfae2 RS |
4245 | (arg, side) |
4246 | Lisp_Object arg, side; | |
7ab12479 | 4247 | { |
b7826503 | 4248 | CHECK_NUMBER (arg); |
56ebfae2 | 4249 | enlarge_window (selected_window, -XINT (arg), !NILP (side)); |
543f5fb1 | 4250 | |
eeca6f6f | 4251 | run_window_configuration_change_hook (SELECTED_FRAME ()); |
543f5fb1 | 4252 | |
7ab12479 JB |
4253 | return Qnil; |
4254 | } | |
4255 | ||
4256 | int | |
4257 | window_height (window) | |
4258 | Lisp_Object window; | |
4259 | { | |
4260 | register struct window *p = XWINDOW (window); | |
949cf20f | 4261 | return WINDOW_TOTAL_LINES (p); |
7ab12479 JB |
4262 | } |
4263 | ||
4264 | int | |
4265 | window_width (window) | |
4266 | Lisp_Object window; | |
4267 | { | |
4268 | register struct window *p = XWINDOW (window); | |
949cf20f | 4269 | return WINDOW_TOTAL_COLS (p); |
7ab12479 JB |
4270 | } |
4271 | ||
177c0ea7 | 4272 | |
7ab12479 | 4273 | #define CURBEG(w) \ |
5afc696a | 4274 | *(horiz_flag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line)) |
7ab12479 JB |
4275 | |
4276 | #define CURSIZE(w) \ | |
5afc696a | 4277 | *(horiz_flag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines)) |
7ab12479 | 4278 | |
233a4a2c | 4279 | |
5afc696a RS |
4280 | /* Enlarge WINDOW by DELTA. |
4281 | HORIZ_FLAG nonzero means enlarge it horizontally; | |
4282 | zero means do it vertically. | |
f95284d2 | 4283 | |
5afc696a RS |
4284 | Siblings of the selected window are resized to fulfill the size |
4285 | request. If they become too small in the process, they will be | |
56ebfae2 | 4286 | deleted. */ |
7ab12479 | 4287 | |
f984d4fc | 4288 | static void |
56ebfae2 | 4289 | enlarge_window (window, delta, horiz_flag) |
86c8e823 | 4290 | Lisp_Object window; |
56ebfae2 | 4291 | int delta, horiz_flag; |
7ab12479 | 4292 | { |
86c8e823 | 4293 | Lisp_Object parent, next, prev; |
233a4a2c | 4294 | struct window *p; |
3578db3c KR |
4295 | Lisp_Object *sizep; |
4296 | int maximum; | |
5e14b1fc | 4297 | int (*sizefun) P_ ((Lisp_Object)) |
5afc696a | 4298 | = horiz_flag ? window_width : window_height; |
233a4a2c | 4299 | void (*setsizefun) P_ ((Lisp_Object, int, int)) |
5afc696a | 4300 | = (horiz_flag ? set_window_width : set_window_height); |
7ab12479 | 4301 | |
233a4a2c GM |
4302 | /* Check values of window_min_width and window_min_height for |
4303 | validity. */ | |
a481b3ea | 4304 | check_min_window_sizes (); |
7ab12479 | 4305 | |
233a4a2c | 4306 | /* Give up if this window cannot be resized. */ |
5afc696a | 4307 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) |
233a4a2c GM |
4308 | error ("Window is not resizable"); |
4309 | ||
4310 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
4311 | while (1) |
4312 | { | |
4313 | p = XWINDOW (window); | |
4314 | parent = p->parent; | |
177c0ea7 | 4315 | |
265a9e55 | 4316 | if (NILP (parent)) |
7ab12479 | 4317 | { |
5afc696a | 4318 | if (horiz_flag) |
7ab12479 JB |
4319 | error ("No other window to side of this one"); |
4320 | break; | |
4321 | } | |
177c0ea7 | 4322 | |
5afc696a | 4323 | if (horiz_flag |
233a4a2c | 4324 | ? !NILP (XWINDOW (parent)->hchild) |
265a9e55 | 4325 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 4326 | break; |
177c0ea7 | 4327 | |
7ab12479 JB |
4328 | window = parent; |
4329 | } | |
4330 | ||
05c2896a | 4331 | sizep = &CURSIZE (window); |
7ab12479 | 4332 | |
7ab12479 JB |
4333 | { |
4334 | register int maxdelta; | |
7ab12479 | 4335 | |
f95284d2 RS |
4336 | /* Compute the maximum size increment this window can have. */ |
4337 | ||
56ebfae2 RS |
4338 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) |
4339 | /* This is a main window followed by a minibuffer. */ | |
4340 | : !NILP (p->next) ? ((*sizefun) (p->next) | |
4341 | - window_min_size (XWINDOW (p->next), | |
4342 | horiz_flag, 0, 0)) | |
4343 | /* This is a minibuffer following a main window. */ | |
4344 | : !NILP (p->prev) ? ((*sizefun) (p->prev) | |
4345 | - window_min_size (XWINDOW (p->prev), | |
4346 | horiz_flag, 0, 0)) | |
4347 | /* This is a frame with only one window, a minibuffer-only | |
4348 | or a minibufferless frame. */ | |
4349 | : (delta = 0)); | |
7ab12479 JB |
4350 | |
4351 | if (delta > maxdelta) | |
4352 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
4353 | the full frame, or make the only window aside from the |
4354 | minibuffer the full frame. */ | |
7ab12479 | 4355 | delta = maxdelta; |
6b54027b | 4356 | } |
d5783c40 | 4357 | |
5afc696a | 4358 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), horiz_flag, 0, 0)) |
6b54027b | 4359 | { |
543f5fb1 | 4360 | delete_window (window); |
d5783c40 | 4361 | return; |
6b54027b RS |
4362 | } |
4363 | ||
4364 | if (delta == 0) | |
4365 | return; | |
7ab12479 | 4366 | |
f95284d2 | 4367 | /* Find the total we can get from other siblings without deleting them. */ |
db98a733 | 4368 | maximum = 0; |
9beb8baa | 4369 | for (next = p->next; WINDOWP (next); next = XWINDOW (next)->next) |
c1636aa6 | 4370 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
5afc696a | 4371 | horiz_flag, 0, 0); |
9beb8baa | 4372 | for (prev = p->prev; WINDOWP (prev); prev = XWINDOW (prev)->prev) |
56ebfae2 RS |
4373 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), |
4374 | horiz_flag, 0, 0); | |
db98a733 | 4375 | |
f95284d2 | 4376 | /* If we can get it all from them without deleting them, do so. */ |
c6b530ed | 4377 | if (delta <= maximum) |
7ab12479 | 4378 | { |
db98a733 RS |
4379 | Lisp_Object first_unaffected; |
4380 | Lisp_Object first_affected; | |
233a4a2c | 4381 | int fixed_p; |
db98a733 RS |
4382 | |
4383 | next = p->next; | |
4384 | prev = p->prev; | |
4385 | first_affected = window; | |
4386 | /* Look at one sibling at a time, | |
4387 | moving away from this window in both directions alternately, | |
4388 | and take as much as we can get without deleting that sibling. */ | |
f95284d2 | 4389 | while (delta != 0 |
56ebfae2 | 4390 | && (!NILP (next) || !NILP (prev))) |
db98a733 | 4391 | { |
db98a733 RS |
4392 | if (! NILP (next)) |
4393 | { | |
c1636aa6 | 4394 | int this_one = ((*sizefun) (next) |
233a4a2c | 4395 | - window_min_size (XWINDOW (next), |
5afc696a | 4396 | horiz_flag, 0, &fixed_p)); |
233a4a2c GM |
4397 | if (!fixed_p) |
4398 | { | |
4399 | if (this_one > delta) | |
4400 | this_one = delta; | |
177c0ea7 | 4401 | |
233a4a2c | 4402 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); |
3578db3c | 4403 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 4404 | |
233a4a2c GM |
4405 | delta -= this_one; |
4406 | } | |
177c0ea7 | 4407 | |
db98a733 RS |
4408 | next = XWINDOW (next)->next; |
4409 | } | |
177c0ea7 | 4410 | |
db98a733 RS |
4411 | if (delta == 0) |
4412 | break; | |
177c0ea7 | 4413 | |
56ebfae2 | 4414 | if (! NILP (prev)) |
db98a733 | 4415 | { |
c1636aa6 | 4416 | int this_one = ((*sizefun) (prev) |
233a4a2c | 4417 | - window_min_size (XWINDOW (prev), |
5afc696a | 4418 | horiz_flag, 0, &fixed_p)); |
233a4a2c GM |
4419 | if (!fixed_p) |
4420 | { | |
4421 | if (this_one > delta) | |
4422 | this_one = delta; | |
177c0ea7 | 4423 | |
233a4a2c | 4424 | first_affected = prev; |
177c0ea7 | 4425 | |
233a4a2c | 4426 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); |
3578db3c | 4427 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
4428 | |
4429 | delta -= this_one; | |
4430 | } | |
177c0ea7 | 4431 | |
db98a733 RS |
4432 | prev = XWINDOW (prev)->prev; |
4433 | } | |
4434 | } | |
4435 | ||
233a4a2c GM |
4436 | xassert (delta == 0); |
4437 | ||
db98a733 RS |
4438 | /* Now recalculate the edge positions of all the windows affected, |
4439 | based on the new sizes. */ | |
4440 | first_unaffected = next; | |
4441 | prev = first_affected; | |
4442 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
4443 | prev = next, next = XWINDOW (next)->next) | |
4444 | { | |
3578db3c | 4445 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
4446 | /* This does not change size of NEXT, |
4447 | but it propagates the new top edge to its children */ | |
4448 | (*setsizefun) (next, (*sizefun) (next), 0); | |
4449 | } | |
7ab12479 JB |
4450 | } |
4451 | else | |
4452 | { | |
4453 | register int delta1; | |
4454 | register int opht = (*sizefun) (parent); | |
4455 | ||
3578db3c | 4456 | if (opht <= XINT (*sizep) + delta) |
daf516d3 RS |
4457 | { |
4458 | /* If trying to grow this window to or beyond size of the parent, | |
4459 | just delete all the sibling windows. */ | |
dc1ab1ee | 4460 | Lisp_Object start, tem, next; |
daf516d3 | 4461 | |
dc1ab1ee RS |
4462 | start = XWINDOW (parent)->vchild; |
4463 | if (NILP (start)) | |
4464 | start = XWINDOW (parent)->hchild; | |
daf516d3 | 4465 | |
dc1ab1ee RS |
4466 | /* Delete any siblings that come after WINDOW. */ |
4467 | tem = XWINDOW (window)->next; | |
daf516d3 RS |
4468 | while (! NILP (tem)) |
4469 | { | |
4470 | next = XWINDOW (tem)->next; | |
dc1ab1ee RS |
4471 | delete_window (tem); |
4472 | tem = next; | |
4473 | } | |
4474 | ||
4475 | /* Delete any siblings that come after WINDOW. | |
4476 | Note that if START is not WINDOW, then WINDOW still | |
4477 | Fhas siblings, so WINDOW has not yet replaced its parent. */ | |
4478 | tem = start; | |
4479 | while (! EQ (tem, window)) | |
4480 | { | |
4481 | next = XWINDOW (tem)->next; | |
4482 | delete_window (tem); | |
daf516d3 RS |
4483 | tem = next; |
4484 | } | |
4485 | } | |
7ab12479 | 4486 | else |
233a4a2c GM |
4487 | { |
4488 | /* Otherwise, make delta1 just right so that if we add | |
4489 | delta1 lines to this window and to the parent, and then | |
4490 | shrink the parent back to its original size, the new | |
4491 | proportional size of this window will increase by delta. | |
4492 | ||
4493 | The function size_window will compute the new height h' | |
4494 | of the window from delta1 as: | |
177c0ea7 | 4495 | |
233a4a2c GM |
4496 | e = delta1/n |
4497 | x = delta1 - delta1/n * n for the 1st resizable child | |
4498 | h' = h + e + x | |
4499 | ||
4500 | where n is the number of children that can be resized. | |
4501 | We can ignore x by choosing a delta1 that is a multiple of | |
4502 | n. We want the height of this window to come out as | |
177c0ea7 | 4503 | |
233a4a2c GM |
4504 | h' = h + delta |
4505 | ||
4506 | So, delta1 must be | |
177c0ea7 | 4507 | |
233a4a2c GM |
4508 | h + e = h + delta |
4509 | delta1/n = delta | |
4510 | delta1 = n * delta. | |
4511 | ||
a5731348 | 4512 | The number of children n equals the number of resizable |
233a4a2c | 4513 | children of this window + 1 because we know window itself |
6e0dca3d | 4514 | is resizable (otherwise we would have signalled an error). */ |
233a4a2c GM |
4515 | |
4516 | struct window *w = XWINDOW (window); | |
4517 | Lisp_Object s; | |
4518 | int n = 1; | |
4519 | ||
9beb8baa | 4520 | for (s = w->next; WINDOWP (s); s = XWINDOW (s)->next) |
5afc696a | 4521 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c | 4522 | ++n; |
9beb8baa | 4523 | for (s = w->prev; WINDOWP (s); s = XWINDOW (s)->prev) |
5afc696a | 4524 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c GM |
4525 | ++n; |
4526 | ||
4527 | delta1 = n * delta; | |
7ab12479 | 4528 | |
daf516d3 RS |
4529 | /* Add delta1 lines or columns to this window, and to the parent, |
4530 | keeping things consistent while not affecting siblings. */ | |
4531 | XSETINT (CURSIZE (parent), opht + delta1); | |
4532 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
4533 | ||
4534 | /* Squeeze out delta1 lines or columns from our parent, | |
4535 | shriking this window and siblings proportionately. | |
4536 | This brings parent back to correct size. | |
4537 | Delta1 was calculated so this makes this window the desired size, | |
4538 | taking it all out of the siblings. */ | |
4539 | (*setsizefun) (parent, opht, 0); | |
4540 | ||
4541 | } | |
7ab12479 JB |
4542 | } |
4543 | ||
d834a2e9 | 4544 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 4545 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
4546 | |
4547 | /* Adjust glyph matrices. */ | |
4548 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 4549 | } |
c1636aa6 | 4550 | |
0d384044 RS |
4551 | |
4552 | /* Adjust the size of WINDOW by DELTA, moving only its trailing edge. | |
4553 | HORIZ_FLAG nonzero means adjust the width, moving the right edge. | |
4554 | zero means adjust the height, moving the bottom edge. | |
4555 | ||
4556 | Following siblings of the selected window are resized to fulfill | |
4557 | the size request. If they become too small in the process, they | |
4558 | are not deleted; instead, we signal an error. */ | |
4559 | ||
4560 | static void | |
4561 | adjust_window_trailing_edge (window, delta, horiz_flag) | |
4562 | Lisp_Object window; | |
4563 | int delta, horiz_flag; | |
4564 | { | |
4565 | Lisp_Object parent, child; | |
4566 | struct window *p; | |
4567 | Lisp_Object old_config = Fcurrent_window_configuration (Qnil); | |
4568 | int delcount = window_deletion_count; | |
4569 | ||
4570 | /* Check values of window_min_width and window_min_height for | |
4571 | validity. */ | |
4572 | check_min_window_sizes (); | |
4573 | ||
0d384044 RS |
4574 | CHECK_WINDOW (window); |
4575 | ||
4576 | /* Give up if this window cannot be resized. */ | |
4577 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) | |
4578 | error ("Window is not resizable"); | |
4579 | ||
4580 | while (1) | |
4581 | { | |
bd99e242 RS |
4582 | Lisp_Object first_parallel = Qnil; |
4583 | ||
c32de52a | 4584 | if (NILP (window)) |
0d384044 | 4585 | { |
5fe0b054 RS |
4586 | /* This happens if WINDOW on the previous iteration was |
4587 | at top level of the window tree. */ | |
0d384044 | 4588 | Fset_window_configuration (old_config); |
c32de52a | 4589 | error ("Specified window edge is fixed"); |
0d384044 RS |
4590 | } |
4591 | ||
c32de52a RS |
4592 | p = XWINDOW (window); |
4593 | parent = p->parent; | |
4594 | ||
bd99e242 RS |
4595 | /* See if this level has windows in parallel in the specified |
4596 | direction. If so, set FIRST_PARALLEL to the first one. */ | |
4597 | if (horiz_flag) | |
4598 | { | |
4599 | if (! NILP (parent) && !NILP (XWINDOW (parent)->vchild)) | |
4600 | first_parallel = XWINDOW (parent)->vchild; | |
5fe0b054 RS |
4601 | else if (NILP (parent) && !NILP (p->next)) |
4602 | { | |
4603 | /* Handle the vertical chain of main window and minibuffer | |
4604 | which has no parent. */ | |
4605 | first_parallel = window; | |
4606 | while (! NILP (XWINDOW (first_parallel)->prev)) | |
4607 | first_parallel = XWINDOW (first_parallel)->prev; | |
4608 | } | |
bd99e242 RS |
4609 | } |
4610 | else | |
4611 | { | |
4612 | if (! NILP (parent) && !NILP (XWINDOW (parent)->hchild)) | |
4613 | first_parallel = XWINDOW (parent)->hchild; | |
4614 | } | |
4615 | ||
c32de52a | 4616 | /* If this level's succession is in the desired dimension, |
5fe0b054 RS |
4617 | and this window is the last one, and there is no higher level, |
4618 | its trailing edge is fixed. */ | |
4619 | if (NILP (XWINDOW (window)->next) && NILP (first_parallel) | |
4620 | && NILP (parent)) | |
c32de52a RS |
4621 | { |
4622 | Fset_window_configuration (old_config); | |
4623 | error ("Specified window edge is fixed"); | |
4624 | } | |
4625 | ||
0d384044 RS |
4626 | /* Don't make this window too small. */ |
4627 | if (XINT (CURSIZE (window)) + delta | |
f1de8c77 | 4628 | < window_min_size_2 (XWINDOW (window), horiz_flag)) |
0d384044 RS |
4629 | { |
4630 | Fset_window_configuration (old_config); | |
4631 | error ("Cannot adjust window size as specified"); | |
4632 | } | |
4633 | ||
4634 | /* Clear out some redisplay caches. */ | |
4635 | XSETFASTINT (p->last_modified, 0); | |
4636 | XSETFASTINT (p->last_overlay_modified, 0); | |
4637 | ||
4638 | /* Adjust this window's edge. */ | |
4639 | XSETINT (CURSIZE (window), | |
4640 | XINT (CURSIZE (window)) + delta); | |
4641 | ||
4642 | /* If this window has following siblings in the desired dimension, | |
bd99e242 RS |
4643 | make them smaller, and exit the loop. |
4644 | ||
0d384044 RS |
4645 | (If we reach the top of the tree and can never do this, |
4646 | we will fail and report an error, above.) */ | |
bd99e242 | 4647 | if (NILP (first_parallel)) |
0d384044 | 4648 | { |
c32de52a | 4649 | if (!NILP (p->next)) |
0d384044 | 4650 | { |
e99c7521 JD |
4651 | /* This may happen for the minibuffer. In that case |
4652 | the window_deletion_count check below does not work. */ | |
a53d44a8 | 4653 | if (XINT (CURSIZE (p->next)) - delta <= 0) |
e99c7521 JD |
4654 | { |
4655 | Fset_window_configuration (old_config); | |
4656 | error ("Cannot adjust window size as specified"); | |
4657 | } | |
4658 | ||
0d384044 RS |
4659 | XSETINT (CURBEG (p->next), |
4660 | XINT (CURBEG (p->next)) + delta); | |
4661 | size_window (p->next, XINT (CURSIZE (p->next)) - delta, | |
5fe0b054 | 4662 | horiz_flag, 0, 1, 0); |
0d384044 RS |
4663 | break; |
4664 | } | |
4665 | } | |
4666 | else | |
4667 | /* Here we have a chain of parallel siblings, in the other dimension. | |
4668 | Change the size of the other siblings. */ | |
bd99e242 | 4669 | for (child = first_parallel; |
0d384044 RS |
4670 | ! NILP (child); |
4671 | child = XWINDOW (child)->next) | |
4672 | if (! EQ (child, window)) | |
4673 | size_window (child, XINT (CURSIZE (child)) + delta, | |
5fe0b054 | 4674 | horiz_flag, 0, 0, 1); |
0d384044 RS |
4675 | |
4676 | window = parent; | |
4677 | } | |
4678 | ||
4679 | /* If we made a window so small it got deleted, | |
4680 | we failed. Report failure. */ | |
4681 | if (delcount != window_deletion_count) | |
4682 | { | |
4683 | Fset_window_configuration (old_config); | |
4684 | error ("Cannot adjust window size as specified"); | |
4685 | } | |
4686 | ||
4687 | /* Adjust glyph matrices. */ | |
4688 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
4689 | } | |
4690 | ||
7ab12479 JB |
4691 | #undef CURBEG |
4692 | #undef CURSIZE | |
4693 | ||
0d384044 RS |
4694 | DEFUN ("adjust-window-trailing-edge", Fadjust_window_trailing_edge, |
4695 | Sadjust_window_trailing_edge, 3, 3, 0, | |
4696 | doc: /* Adjust the bottom or right edge of WINDOW by DELTA. | |
56ebfae2 | 4697 | If HORIZONTAL is non-nil, that means adjust the width, moving the right edge. |
0d384044 RS |
4698 | Otherwise, adjust the height, moving the bottom edge. |
4699 | ||
4700 | Following siblings of the selected window are resized to fulfill | |
4701 | the size request. If they become too small in the process, they | |
4702 | are not deleted; instead, we signal an error. */) | |
4703 | (window, delta, horizontal) | |
4704 | Lisp_Object window, delta, horizontal; | |
4705 | { | |
4706 | CHECK_NUMBER (delta); | |
eeca6f6f SM |
4707 | if (NILP (window)) |
4708 | window = selected_window; | |
0d384044 RS |
4709 | adjust_window_trailing_edge (window, XINT (delta), !NILP (horizontal)); |
4710 | ||
eeca6f6f SM |
4711 | run_window_configuration_change_hook |
4712 | (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
0d384044 RS |
4713 | |
4714 | return Qnil; | |
4715 | } | |
4716 | ||
5500c422 | 4717 | |
f984d4fc GM |
4718 | \f |
4719 | /*********************************************************************** | |
4720 | Resizing Mini-Windows | |
4721 | ***********************************************************************/ | |
4722 | ||
4723 | static void shrink_window_lowest_first P_ ((struct window *, int)); | |
f984d4fc | 4724 | |
43b4a21f GM |
4725 | enum save_restore_action |
4726 | { | |
4727 | CHECK_ORIG_SIZES, | |
4728 | SAVE_ORIG_SIZES, | |
4729 | RESTORE_ORIG_SIZES | |
4730 | }; | |
4731 | ||
177c0ea7 | 4732 | static int save_restore_orig_size P_ ((struct window *, |
43b4a21f | 4733 | enum save_restore_action)); |
f984d4fc GM |
4734 | |
4735 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
4736 | from lowest windows first. */ | |
4737 | ||
4738 | static void | |
4739 | shrink_window_lowest_first (w, height) | |
4740 | struct window *w; | |
4741 | int height; | |
4742 | { | |
4743 | struct window *c; | |
4744 | Lisp_Object child; | |
4745 | int old_height; | |
4746 | ||
4747 | xassert (!MINI_WINDOW_P (w)); | |
4748 | ||
4749 | /* Set redisplay hints. */ | |
4750 | XSETFASTINT (w->last_modified, 0); | |
4751 | XSETFASTINT (w->last_overlay_modified, 0); | |
4752 | windows_or_buffers_changed++; | |
4753 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
4754 | ||
949cf20f KS |
4755 | old_height = XFASTINT (w->total_lines); |
4756 | XSETFASTINT (w->total_lines, height); | |
f984d4fc GM |
4757 | |
4758 | if (!NILP (w->hchild)) | |
4759 | { | |
4760 | for (child = w->hchild; !NILP (child); child = c->next) | |
4761 | { | |
4762 | c = XWINDOW (child); | |
949cf20f | 4763 | c->top_line = w->top_line; |
f984d4fc GM |
4764 | shrink_window_lowest_first (c, height); |
4765 | } | |
4766 | } | |
4767 | else if (!NILP (w->vchild)) | |
4768 | { | |
4769 | Lisp_Object last_child; | |
4770 | int delta = old_height - height; | |
4771 | int last_top; | |
6bbd7a29 GM |
4772 | |
4773 | last_child = Qnil; | |
177c0ea7 | 4774 | |
f984d4fc GM |
4775 | /* Find the last child. We are taking space from lowest windows |
4776 | first, so we iterate over children from the last child | |
4777 | backwards. */ | |
9beb8baa | 4778 | for (child = w->vchild; WINDOWP (child); child = XWINDOW (child)->next) |
f984d4fc GM |
4779 | last_child = child; |
4780 | ||
4781 | /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */ | |
4782 | for (child = last_child; delta && !NILP (child); child = c->prev) | |
4783 | { | |
4784 | int this_one; | |
177c0ea7 | 4785 | |
f984d4fc | 4786 | c = XWINDOW (child); |
949cf20f | 4787 | this_one = XFASTINT (c->total_lines) - MIN_SAFE_WINDOW_HEIGHT; |
f984d4fc GM |
4788 | |
4789 | if (this_one > delta) | |
4790 | this_one = delta; | |
4791 | ||
949cf20f | 4792 | shrink_window_lowest_first (c, XFASTINT (c->total_lines) - this_one); |
f984d4fc GM |
4793 | delta -= this_one; |
4794 | } | |
4795 | ||
4796 | /* Compute new positions. */ | |
949cf20f | 4797 | last_top = XINT (w->top_line); |
f984d4fc GM |
4798 | for (child = w->vchild; !NILP (child); child = c->next) |
4799 | { | |
4800 | c = XWINDOW (child); | |
949cf20f KS |
4801 | c->top_line = make_number (last_top); |
4802 | shrink_window_lowest_first (c, XFASTINT (c->total_lines)); | |
4803 | last_top += XFASTINT (c->total_lines); | |
f984d4fc GM |
4804 | } |
4805 | } | |
4806 | } | |
4807 | ||
4808 | ||
43b4a21f GM |
4809 | /* Save, restore, or check positions and sizes in the window tree |
4810 | rooted at W. ACTION says what to do. | |
f984d4fc | 4811 | |
949cf20f KS |
4812 | If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and |
4813 | orig_total_lines members are valid for all windows in the window | |
4814 | tree. Value is non-zero if they are valid. | |
177c0ea7 | 4815 | |
43b4a21f | 4816 | If ACTION is SAVE_ORIG_SIZES, save members top and height in |
949cf20f | 4817 | orig_top_line and orig_total_lines for all windows in the tree. |
43b4a21f | 4818 | |
949cf20f KS |
4819 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from values |
4820 | stored in orig_top_line and orig_total_lines for all windows. */ | |
43b4a21f GM |
4821 | |
4822 | static int | |
4823 | save_restore_orig_size (w, action) | |
f984d4fc | 4824 | struct window *w; |
43b4a21f | 4825 | enum save_restore_action action; |
f984d4fc | 4826 | { |
43b4a21f GM |
4827 | int success_p = 1; |
4828 | ||
f984d4fc GM |
4829 | while (w) |
4830 | { | |
4831 | if (!NILP (w->hchild)) | |
43b4a21f GM |
4832 | { |
4833 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
4834 | success_p = 0; | |
4835 | } | |
f984d4fc | 4836 | else if (!NILP (w->vchild)) |
43b4a21f GM |
4837 | { |
4838 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
4839 | success_p = 0; | |
4840 | } | |
177c0ea7 | 4841 | |
43b4a21f | 4842 | switch (action) |
f984d4fc | 4843 | { |
43b4a21f | 4844 | case CHECK_ORIG_SIZES: |
949cf20f | 4845 | if (!INTEGERP (w->orig_top_line) || !INTEGERP (w->orig_total_lines)) |
43b4a21f GM |
4846 | return 0; |
4847 | break; | |
4848 | ||
4849 | case SAVE_ORIG_SIZES: | |
949cf20f KS |
4850 | w->orig_top_line = w->top_line; |
4851 | w->orig_total_lines = w->total_lines; | |
43b4a21f GM |
4852 | XSETFASTINT (w->last_modified, 0); |
4853 | XSETFASTINT (w->last_overlay_modified, 0); | |
4854 | break; | |
4855 | ||
4856 | case RESTORE_ORIG_SIZES: | |
949cf20f KS |
4857 | xassert (INTEGERP (w->orig_top_line) && INTEGERP (w->orig_total_lines)); |
4858 | w->top_line = w->orig_top_line; | |
4859 | w->total_lines = w->orig_total_lines; | |
4860 | w->orig_total_lines = w->orig_top_line = Qnil; | |
43b4a21f GM |
4861 | XSETFASTINT (w->last_modified, 0); |
4862 | XSETFASTINT (w->last_overlay_modified, 0); | |
4863 | break; | |
4864 | ||
4865 | default: | |
4866 | abort (); | |
f984d4fc | 4867 | } |
43b4a21f | 4868 | |
f984d4fc GM |
4869 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
4870 | } | |
43b4a21f GM |
4871 | |
4872 | return success_p; | |
f984d4fc GM |
4873 | } |
4874 | ||
4875 | ||
4876 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
4877 | without deleting other windows. */ | |
4878 | ||
4879 | void | |
4880 | grow_mini_window (w, delta) | |
4881 | struct window *w; | |
4882 | int delta; | |
4883 | { | |
4884 | struct frame *f = XFRAME (w->frame); | |
4885 | struct window *root; | |
177c0ea7 | 4886 | |
f984d4fc GM |
4887 | xassert (MINI_WINDOW_P (w)); |
4888 | xassert (delta >= 0); | |
177c0ea7 | 4889 | |
f984d4fc GM |
4890 | /* Check values of window_min_width and window_min_height for |
4891 | validity. */ | |
4892 | check_min_window_sizes (); | |
4893 | ||
4894 | /* Compute how much we can enlarge the mini-window without deleting | |
4895 | other windows. */ | |
4896 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4897 | if (delta) | |
4898 | { | |
4899 | int min_height = window_min_size (root, 0, 0, 0); | |
949cf20f | 4900 | if (XFASTINT (root->total_lines) - delta < min_height) |
8b8bd9c6 | 4901 | /* Note that the root window may already be smaller than |
eafa3196 | 4902 | min_height. */ |
949cf20f | 4903 | delta = max (0, XFASTINT (root->total_lines) - min_height); |
f984d4fc | 4904 | } |
177c0ea7 | 4905 | |
f984d4fc GM |
4906 | if (delta) |
4907 | { | |
4908 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
4909 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
4910 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
4911 | |
4912 | /* Shrink other windows. */ | |
949cf20f | 4913 | shrink_window_lowest_first (root, XFASTINT (root->total_lines) - delta); |
f984d4fc GM |
4914 | |
4915 | /* Grow the mini-window. */ | |
949cf20f KS |
4916 | w->top_line = make_number (XFASTINT (root->top_line) + XFASTINT (root->total_lines)); |
4917 | w->total_lines = make_number (XFASTINT (w->total_lines) + delta); | |
f984d4fc GM |
4918 | XSETFASTINT (w->last_modified, 0); |
4919 | XSETFASTINT (w->last_overlay_modified, 0); | |
177c0ea7 | 4920 | |
f984d4fc GM |
4921 | adjust_glyphs (f); |
4922 | } | |
4923 | } | |
4924 | ||
4925 | ||
86c8e823 GM |
4926 | /* Shrink mini-window W. If there is recorded info about window sizes |
4927 | before a call to grow_mini_window, restore recorded window sizes. | |
4928 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
4929 | line. */ | |
f984d4fc GM |
4930 | |
4931 | void | |
4932 | shrink_mini_window (w) | |
4933 | struct window *w; | |
4934 | { | |
4935 | struct frame *f = XFRAME (w->frame); | |
4936 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4937 | ||
43b4a21f | 4938 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 4939 | { |
43b4a21f | 4940 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
4941 | adjust_glyphs (f); |
4942 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
4943 | windows_or_buffers_changed = 1; | |
4944 | } | |
949cf20f | 4945 | else if (XFASTINT (w->total_lines) > 1) |
86c8e823 | 4946 | { |
0130fe1a GM |
4947 | /* Distribute the additional lines of the mini-window |
4948 | among the other windows. */ | |
86c8e823 GM |
4949 | Lisp_Object window; |
4950 | XSETWINDOW (window, w); | |
56ebfae2 | 4951 | enlarge_window (window, 1 - XFASTINT (w->total_lines), 0); |
86c8e823 | 4952 | } |
f984d4fc GM |
4953 | } |
4954 | ||
4955 | ||
4956 | \f | |
5500c422 GM |
4957 | /* Mark window cursors off for all windows in the window tree rooted |
4958 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4959 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4960 | the frame are cleared. */ | |
4961 | ||
4962 | void | |
4963 | mark_window_cursors_off (w) | |
4964 | struct window *w; | |
4965 | { | |
4966 | while (w) | |
4967 | { | |
4968 | if (!NILP (w->hchild)) | |
4969 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4970 | else if (!NILP (w->vchild)) | |
4971 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
4972 | else | |
4973 | w->phys_cursor_on_p = 0; | |
4974 | ||
4975 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4976 | } | |
4977 | } | |
4978 | ||
4979 | ||
e9c195b1 | 4980 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4981 | |
4982 | int | |
4983 | window_internal_height (w) | |
4984 | struct window *w; | |
4985 | { | |
949cf20f | 4986 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4987 | |
e9c195b1 GM |
4988 | if (!MINI_WINDOW_P (w)) |
4989 | { | |
4990 | if (!NILP (w->parent) | |
4991 | || !NILP (w->vchild) | |
4992 | || !NILP (w->hchild) | |
4993 | || !NILP (w->next) | |
4994 | || !NILP (w->prev) | |
4995 | || WINDOW_WANTS_MODELINE_P (w)) | |
4996 | --ht; | |
7ab12479 | 4997 | |
e9c195b1 GM |
4998 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4999 | --ht; | |
5000 | } | |
7ab12479 JB |
5001 | |
5002 | return ht; | |
5003 | } | |
5004 | ||
535e0b8e JB |
5005 | |
5006 | /* Return the number of columns in W. | |
a3c87d4e | 5007 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 5008 | separating W from the sibling to its right. */ |
5500c422 | 5009 | |
535e0b8e | 5010 | int |
949cf20f | 5011 | window_box_text_cols (w) |
535e0b8e JB |
5012 | struct window *w; |
5013 | { | |
5500c422 | 5014 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
949cf20f | 5015 | int width = XINT (w->total_cols); |
535e0b8e | 5016 | |
949cf20f | 5017 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) |
5500c422 | 5018 | /* Scroll bars occupy a few columns. */ |
949cf20f KS |
5019 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); |
5020 | else if (!FRAME_WINDOW_P (f) | |
5021 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
5500c422 GM |
5022 | /* The column of `|' characters separating side-by-side windows |
5023 | occupies one column only. */ | |
5024 | width -= 1; | |
5025 | ||
5500c422 | 5026 | if (FRAME_WINDOW_P (f)) |
949cf20f KS |
5027 | /* On window-systems, fringes and display margins cannot be |
5028 | used for normal text. */ | |
5029 | width -= (WINDOW_FRINGE_COLS (w) | |
5030 | + WINDOW_LEFT_MARGIN_COLS (w) | |
5031 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
111e5992 RS |
5032 | |
5033 | return width; | |
535e0b8e JB |
5034 | } |
5035 | ||
5500c422 GM |
5036 | \f |
5037 | /************************************************************************ | |
5038 | Window Scrolling | |
5039 | ***********************************************************************/ | |
535e0b8e | 5040 | |
5500c422 | 5041 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 5042 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
5043 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
5044 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
5045 | means don't signal an error if we try to move over BEGV or ZV, | |
5046 | respectively. */ | |
7ab12479 | 5047 | |
101d1605 RS |
5048 | static void |
5049 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
5050 | Lisp_Object window; |
5051 | int n; | |
101d1605 | 5052 | int whole; |
f8026fd8 | 5053 | int noerror; |
5500c422 | 5054 | { |
cba59f77 RS |
5055 | immediate_quit = 1; |
5056 | ||
5500c422 GM |
5057 | /* If we must, use the pixel-based version which is much slower than |
5058 | the line-based one but can handle varying line heights. */ | |
5059 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
5060 | window_scroll_pixel_based (window, n, whole, noerror); | |
5061 | else | |
5062 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
5063 | |
5064 | immediate_quit = 0; | |
5500c422 GM |
5065 | } |
5066 | ||
5067 | ||
5068 | /* Implementation of window_scroll that works based on pixel line | |
5069 | heights. See the comment of window_scroll for parameter | |
5070 | descriptions. */ | |
5071 | ||
5072 | static void | |
5073 | window_scroll_pixel_based (window, n, whole, noerror) | |
5074 | Lisp_Object window; | |
5075 | int n; | |
5076 | int whole; | |
5077 | int noerror; | |
5078 | { | |
5079 | struct it it; | |
5080 | struct window *w = XWINDOW (window); | |
5081 | struct text_pos start; | |
5500c422 | 5082 | int this_scroll_margin; |
5cdb3cf3 MB |
5083 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5084 | int vscrolled = 0; | |
5a857365 | 5085 | int x, y, rtop, rbot, rowh, vpos; |
5500c422 GM |
5086 | |
5087 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
177c0ea7 | 5088 | |
5500c422 | 5089 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
5090 | the screen. Allow PT to be partially visible, otherwise |
5091 | something like (scroll-down 1) with PT in the line before | |
5092 | the partially visible one would recenter. */ | |
5a857365 KS |
5093 | |
5094 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 GM |
5095 | { |
5096 | /* Move backward half the height of the window. Performance note: | |
5097 | vmotion used here is about 10% faster, but would give wrong | |
5098 | results for variable height lines. */ | |
5099 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
5100 | it.current_y = it.last_visible_y; | |
f204989e | 5101 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 5102 | |
5500c422 GM |
5103 | /* The function move_iterator_vertically may move over more than |
5104 | the specified y-distance. If it->w is small, e.g. a | |
5105 | mini-buffer window, we may end up in front of the window's | |
5106 | display area. This is the case when Start displaying at the | |
5107 | start of the line containing PT in this case. */ | |
5108 | if (it.current_y <= 0) | |
5109 | { | |
5110 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 5111 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
5112 | it.current_y = 0; |
5113 | } | |
5114 | ||
5115 | start = it.current.pos; | |
5116 | } | |
e56263e5 KS |
5117 | else if (auto_window_vscroll_p) |
5118 | { | |
5a857365 | 5119 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
5120 | { |
5121 | int px; | |
5122 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
5123 | if (whole) | |
e856c216 KS |
5124 | dy = max ((window_box_height (w) |
5125 | - next_screen_context_lines * dy), | |
5126 | dy); | |
e56263e5 KS |
5127 | dy *= n; |
5128 | ||
5a857365 | 5129 | if (n < 0) |
e56263e5 | 5130 | { |
5a857365 KS |
5131 | /* Only vscroll backwards if already vscrolled forwards. */ |
5132 | if (w->vscroll < 0 && rtop > 0) | |
5133 | { | |
5134 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
5135 | Fset_window_vscroll (window, make_number (px), Qt); | |
5136 | return; | |
5137 | } | |
e56263e5 | 5138 | } |
5a857365 | 5139 | if (n > 0) |
e56263e5 | 5140 | { |
5a857365 KS |
5141 | /* Do vscroll if already vscrolled or only display line. */ |
5142 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
5143 | { | |
5144 | px = max (0, -w->vscroll + min (rbot, dy)); | |
5145 | Fset_window_vscroll (window, make_number (px), Qt); | |
5146 | return; | |
5147 | } | |
5148 | ||
5149 | /* Maybe modify window start instead of scrolling. */ | |
5150 | if (rbot > 0 || w->vscroll < 0) | |
5151 | { | |
5152 | int spos; | |
5153 | ||
5154 | Fset_window_vscroll (window, make_number (0), Qt); | |
5155 | /* If there are other text lines above the current row, | |
5156 | move window start to current row. Else to next row. */ | |
5157 | if (rbot > 0) | |
5158 | spos = XINT (Fline_beginning_position (Qnil)); | |
5159 | else | |
5160 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
5161 | set_marker_restricted (w->start, make_number (spos), | |
5162 | w->buffer); | |
5163 | w->start_at_line_beg = Qt; | |
5164 | w->update_mode_line = Qt; | |
5165 | XSETFASTINT (w->last_modified, 0); | |
5166 | XSETFASTINT (w->last_overlay_modified, 0); | |
5167 | /* Set force_start so that redisplay_window will run the | |
5168 | window-scroll-functions. */ | |
5169 | w->force_start = Qt; | |
5170 | return; | |
5171 | } | |
e56263e5 KS |
5172 | } |
5173 | } | |
5a857365 | 5174 | /* Cancel previous vscroll. */ |
e56263e5 KS |
5175 | Fset_window_vscroll (window, make_number (0), Qt); |
5176 | } | |
5500c422 | 5177 | |
d0c38d63 | 5178 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
5179 | point in the same window line as it is now, so get that line. */ |
5180 | if (!NILP (Vscroll_preserve_screen_position)) | |
5181 | { | |
c525d842 CY |
5182 | /* We preserve the goal pixel coordinate across consecutive |
5183 | calls to scroll-up or scroll-down. This avoids the | |
5184 | possibility of point becoming "stuck" on a tall line when | |
5185 | scrolling by one line. */ | |
66fe93d1 | 5186 | if (window_scroll_pixel_based_preserve_y < 0 |
7d619454 SM |
5187 | || (!EQ (current_kboard->Vlast_command, Qscroll_up) |
5188 | && !EQ (current_kboard->Vlast_command, Qscroll_down))) | |
c525d842 CY |
5189 | { |
5190 | start_display (&it, w, start); | |
5191 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 5192 | window_scroll_pixel_based_preserve_y = it.current_y; |
c525d842 | 5193 | } |
5500c422 GM |
5194 | } |
5195 | else | |
66fe93d1 | 5196 | window_scroll_pixel_based_preserve_y = -1; |
5500c422 GM |
5197 | |
5198 | /* Move iterator it from start the specified distance forward or | |
5199 | backward. The result is the new window start. */ | |
5200 | start_display (&it, w, start); | |
5201 | if (whole) | |
5202 | { | |
e856c216 KS |
5203 | int start_pos = IT_CHARPOS (it); |
5204 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
5205 | dy = max ((window_box_height (w) | |
5206 | - next_screen_context_lines * dy), | |
5207 | dy) * n; | |
d72340d4 GM |
5208 | |
5209 | /* Note that move_it_vertically always moves the iterator to the | |
5210 | start of a line. So, if the last line doesn't have a newline, | |
5211 | we would end up at the start of the line ending at ZV. */ | |
5212 | if (dy <= 0) | |
e856c216 KS |
5213 | { |
5214 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 5215 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
5216 | looking at an image that is taller that the window height. */ |
5217 | while (start_pos == IT_CHARPOS (it) | |
5218 | && start_pos > BEGV) | |
5219 | move_it_by_lines (&it, -1, 1); | |
5220 | } | |
d72340d4 | 5221 | else if (dy > 0) |
bed83ee4 | 5222 | { |
bed83ee4 KS |
5223 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
5224 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 5225 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
5226 | looking at an image that is taller that the window height. */ |
5227 | while (start_pos == IT_CHARPOS (it) | |
5228 | && start_pos < ZV) | |
5229 | move_it_by_lines (&it, 1, 1); | |
5230 | } | |
5500c422 GM |
5231 | } |
5232 | else | |
5233 | move_it_by_lines (&it, n, 1); | |
5234 | ||
96ae58c8 RS |
5235 | /* We failed if we find ZV is already on the screen (scrolling up, |
5236 | means there's nothing past the end), or if we can't start any | |
5237 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 5238 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 5239 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 5240 | { |
5cdb3cf3 MB |
5241 | if (IT_CHARPOS (it) == ZV) |
5242 | { | |
07ce8b53 RS |
5243 | if (it.current_y < it.last_visible_y |
5244 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 5245 | > it.last_visible_y)) |
a74eca50 GM |
5246 | { |
5247 | /* The last line was only partially visible, make it fully | |
5248 | visible. */ | |
5249 | w->vscroll = (it.last_visible_y | |
5250 | - it.current_y + it.max_ascent + it.max_descent); | |
5251 | adjust_glyphs (it.f); | |
5252 | } | |
5cdb3cf3 MB |
5253 | else if (noerror) |
5254 | return; | |
cf402f3f | 5255 | else if (n < 0) /* could happen with empty buffers */ |
ba96a5cf | 5256 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 | 5257 | else |
ba96a5cf | 5258 | xsignal0 (Qend_of_buffer); |
5cdb3cf3 | 5259 | } |
5500c422 | 5260 | else |
5cdb3cf3 MB |
5261 | { |
5262 | if (w->vscroll != 0) | |
5263 | /* The first line was only partially visible, make it fully | |
5264 | visible. */ | |
5265 | w->vscroll = 0; | |
5266 | else if (noerror) | |
5267 | return; | |
5268 | else | |
ba96a5cf | 5269 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 MB |
5270 | } |
5271 | ||
5272 | /* If control gets here, then we vscrolled. */ | |
5273 | ||
5274 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
5275 | ||
5276 | /* Don't try to change the window start below. */ | |
5277 | vscrolled = 1; | |
5500c422 GM |
5278 | } |
5279 | ||
5cdb3cf3 MB |
5280 | if (! vscrolled) |
5281 | { | |
dad67609 RS |
5282 | int pos = IT_CHARPOS (it); |
5283 | int bytepos; | |
e68def1e AS |
5284 | |
5285 | /* If in the middle of a multi-glyph character move forward to | |
5286 | the next character. */ | |
5287 | if (in_display_vector_p (&it)) | |
5288 | { | |
5289 | ++pos; | |
5290 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
5291 | } | |
5292 | ||
5cdb3cf3 | 5293 | /* Set the window start, and set up the window for redisplay. */ |
dad67609 | 5294 | set_marker_restricted (w->start, make_number (pos), |
5cdb3cf3 | 5295 | w->buffer); |
dad67609 RS |
5296 | bytepos = XMARKER (w->start)->bytepos; |
5297 | w->start_at_line_beg = ((pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n') | |
5298 | ? Qt : Qnil); | |
5cdb3cf3 MB |
5299 | w->update_mode_line = Qt; |
5300 | XSETFASTINT (w->last_modified, 0); | |
5301 | XSETFASTINT (w->last_overlay_modified, 0); | |
5302 | /* Set force_start so that redisplay_window will run the | |
5303 | window-scroll-functions. */ | |
5304 | w->force_start = Qt; | |
5305 | } | |
177c0ea7 | 5306 | |
dc297565 RS |
5307 | /* The rest of this function uses current_y in a nonstandard way, |
5308 | not including the height of the header line if any. */ | |
5500c422 | 5309 | it.current_y = it.vpos = 0; |
177c0ea7 | 5310 | |
940f53e5 RS |
5311 | /* Move PT out of scroll margins. |
5312 | This code wants current_y to be zero at the window start position | |
5313 | even if there is a header line. */ | |
5314 | this_scroll_margin = max (0, scroll_margin); | |
5315 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); | |
5316 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); | |
5317 | ||
5318 | if (n > 0) | |
5500c422 | 5319 | { |
940f53e5 RS |
5320 | /* We moved the window start towards ZV, so PT may be now |
5321 | in the scroll margin at the top. */ | |
5322 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
5323 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
5324 | && (NILP (Vscroll_preserve_screen_position) | |
5325 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5326 | /* We found PT at a legitimate height. Leave it alone. */ |
5327 | ; | |
66fe93d1 | 5328 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 5329 | { |
fa3c3426 RS |
5330 | /* If we have a header line, take account of it. |
5331 | This is necessary because we set it.current_y to 0, above. */ | |
c525d842 | 5332 | move_it_to (&it, -1, -1, |
66fe93d1 LT |
5333 | window_scroll_pixel_based_preserve_y |
5334 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c525d842 | 5335 | -1, MOVE_TO_Y); |
940f53e5 RS |
5336 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5337 | } | |
5338 | else | |
5500c422 | 5339 | { |
5500c422 | 5340 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
5341 | { |
5342 | int prev = it.current_y; | |
5343 | move_it_by_lines (&it, 1, 1); | |
5344 | if (prev == it.current_y) | |
5345 | break; | |
5346 | } | |
5500c422 GM |
5347 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5348 | } | |
940f53e5 RS |
5349 | } |
5350 | else if (n < 0) | |
5351 | { | |
5352 | int charpos, bytepos; | |
aed328bf | 5353 | int partial_p; |
940f53e5 | 5354 | |
66fe93d1 LT |
5355 | /* Save our position, for the |
5356 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
5357 | charpos = IT_CHARPOS (it); |
5358 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 5359 | |
940f53e5 RS |
5360 | /* We moved the window start towards BEGV, so PT may be now |
5361 | in the scroll margin at the bottom. */ | |
5362 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
5363 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
5364 | - this_scroll_margin - 1), | |
5365 | -1, | |
940f53e5 RS |
5366 | MOVE_TO_POS | MOVE_TO_Y); |
5367 | ||
aed328bf KS |
5368 | /* Save our position, in case it's correct. */ |
5369 | charpos = IT_CHARPOS (it); | |
5370 | bytepos = IT_BYTEPOS (it); | |
5371 | ||
5372 | /* See if point is on a partially visible line at the end. */ | |
5373 | if (it.what == IT_EOB) | |
5374 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
5375 | else | |
5376 | { | |
5377 | move_it_by_lines (&it, 1, 1); | |
5378 | partial_p = it.current_y > it.last_visible_y; | |
5379 | } | |
5380 | ||
bdf4ec93 RS |
5381 | if (charpos == PT && !partial_p |
5382 | && (NILP (Vscroll_preserve_screen_position) | |
5383 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5384 | /* We found PT before we found the display margin, so PT is ok. */ |
5385 | ; | |
66fe93d1 | 5386 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 RS |
5387 | { |
5388 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5389 | start_display (&it, w, start); | |
c525d842 CY |
5390 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
5391 | here because we called start_display again and did not | |
5392 | alter it.current_y this time. */ | |
66fe93d1 LT |
5393 | move_it_to (&it, -1, -1, window_scroll_pixel_based_preserve_y, -1, |
5394 | MOVE_TO_Y); | |
940f53e5 RS |
5395 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5396 | } | |
5397 | else | |
5398 | { | |
aed328bf | 5399 | if (partial_p) |
5cdb3cf3 MB |
5400 | /* The last line was only partially visible, so back up two |
5401 | lines to make sure we're on a fully visible line. */ | |
5402 | { | |
5403 | move_it_by_lines (&it, -2, 0); | |
5404 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
5405 | } | |
5406 | else | |
5407 | /* No, the position we saved is OK, so use it. */ | |
5408 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
5409 | } |
5410 | } | |
5411 | } | |
5412 | ||
5413 | ||
5414 | /* Implementation of window_scroll that works based on screen lines. | |
5415 | See the comment of window_scroll for parameter descriptions. */ | |
5416 | ||
5417 | static void | |
5418 | window_scroll_line_based (window, n, whole, noerror) | |
5419 | Lisp_Object window; | |
5420 | int n; | |
5421 | int whole; | |
5422 | int noerror; | |
7ab12479 JB |
5423 | { |
5424 | register struct window *w = XWINDOW (window); | |
5500c422 | 5425 | register int opoint = PT, opoint_byte = PT_BYTE; |
b73ea88e | 5426 | register int pos, pos_byte; |
7ab12479 JB |
5427 | register int ht = window_internal_height (w); |
5428 | register Lisp_Object tem; | |
5429 | int lose; | |
5500c422 | 5430 | Lisp_Object bolp; |
345d45b2 | 5431 | int startpos; |
101d1605 RS |
5432 | struct position posit; |
5433 | int original_vpos; | |
5434 | ||
d4e7cf01 GM |
5435 | /* If scrolling screen-fulls, compute the number of lines to |
5436 | scroll from the window's height. */ | |
5437 | if (whole) | |
5438 | n *= max (1, ht - next_screen_context_lines); | |
5439 | ||
101d1605 RS |
5440 | startpos = marker_position (w->start); |
5441 | ||
5442 | posit = *compute_motion (startpos, 0, 0, 0, | |
5443 | PT, ht, 0, | |
ec2b66c4 | 5444 | -1, XINT (w->hscroll), |
101d1605 RS |
5445 | 0, w); |
5446 | original_vpos = posit.vpos; | |
0a1f771a | 5447 | |
d834a2e9 | 5448 | XSETFASTINT (tem, PT); |
6ffdb539 | 5449 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 5450 | |
265a9e55 | 5451 | if (NILP (tem)) |
7ab12479 | 5452 | { |
cd2be1dd | 5453 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 5454 | startpos = PT; |
7ab12479 JB |
5455 | } |
5456 | ||
345d45b2 | 5457 | SET_PT (startpos); |
5ce7b543 | 5458 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 5459 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 5460 | pos = PT; |
b73ea88e | 5461 | pos_byte = PT_BYTE; |
7ab12479 | 5462 | bolp = Fbolp (); |
b73ea88e | 5463 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
5464 | |
5465 | if (lose) | |
f8026fd8 JB |
5466 | { |
5467 | if (noerror) | |
5468 | return; | |
5469 | else | |
ba96a5cf | 5470 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 5471 | } |
7ab12479 JB |
5472 | |
5473 | if (pos < ZV) | |
7ab12479 | 5474 | { |
0c7da84e RS |
5475 | int this_scroll_margin = scroll_margin; |
5476 | ||
5477 | /* Don't use a scroll margin that is negative or too large. */ | |
5478 | if (this_scroll_margin < 0) | |
5479 | this_scroll_margin = 0; | |
5480 | ||
949cf20f KS |
5481 | if (XINT (w->total_lines) < 4 * scroll_margin) |
5482 | this_scroll_margin = XINT (w->total_lines) / 4; | |
0c7da84e | 5483 | |
b73ea88e | 5484 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
5485 | w->start_at_line_beg = bolp; |
5486 | w->update_mode_line = Qt; | |
d834a2e9 | 5487 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 5488 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
5489 | /* Set force_start so that redisplay_window will run |
5490 | the window-scroll-functions. */ | |
5491 | w->force_start = Qt; | |
0c7da84e | 5492 | |
bdf4ec93 RS |
5493 | if (!NILP (Vscroll_preserve_screen_position) |
5494 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 5495 | { |
b73ea88e | 5496 | SET_PT_BOTH (pos, pos_byte); |
101d1605 | 5497 | Fvertical_motion (make_number (original_vpos), window); |
0c7da84e | 5498 | } |
101d1605 RS |
5499 | /* If we scrolled forward, put point enough lines down |
5500 | that it is outside the scroll margin. */ | |
5501 | else if (n > 0) | |
0c7da84e | 5502 | { |
101d1605 RS |
5503 | int top_margin; |
5504 | ||
5505 | if (this_scroll_margin > 0) | |
5506 | { | |
b73ea88e | 5507 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
5508 | Fvertical_motion (make_number (this_scroll_margin), window); |
5509 | top_margin = PT; | |
5510 | } | |
5511 | else | |
5512 | top_margin = pos; | |
5513 | ||
5514 | if (top_margin <= opoint) | |
b73ea88e | 5515 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 5516 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 5517 | { |
b73ea88e | 5518 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
5519 | Fvertical_motion (make_number (original_vpos), window); |
5520 | } | |
9317a85d | 5521 | else |
335406fc | 5522 | SET_PT (top_margin); |
0c7da84e | 5523 | } |
101d1605 | 5524 | else if (n < 0) |
7ab12479 | 5525 | { |
101d1605 RS |
5526 | int bottom_margin; |
5527 | ||
0c7da84e RS |
5528 | /* If we scrolled backward, put point near the end of the window |
5529 | but not within the scroll margin. */ | |
b73ea88e | 5530 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 5531 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
5532 | if (XFASTINT (tem) == ht - this_scroll_margin) |
5533 | bottom_margin = PT; | |
5534 | else | |
5535 | bottom_margin = PT + 1; | |
5536 | ||
5537 | if (bottom_margin > opoint) | |
b73ea88e | 5538 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 5539 | else |
101d1605 | 5540 | { |
5500c422 | 5541 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 5542 | { |
b73ea88e | 5543 | SET_PT_BOTH (pos, pos_byte); |
9317a85d RS |
5544 | Fvertical_motion (make_number (original_vpos), window); |
5545 | } | |
5546 | else | |
5547 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 5548 | } |
7ab12479 JB |
5549 | } |
5550 | } | |
5551 | else | |
f8026fd8 JB |
5552 | { |
5553 | if (noerror) | |
5554 | return; | |
5555 | else | |
ba96a5cf | 5556 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 5557 | } |
7ab12479 | 5558 | } |
5500c422 GM |
5559 | |
5560 | ||
5561 | /* Scroll selected_window up or down. If N is nil, scroll a | |
5562 | screen-full which is defined as the height of the window minus | |
5563 | next_screen_context_lines. If N is the symbol `-', scroll. | |
5564 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
5565 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
5566 | |
5567 | static void | |
5568 | scroll_command (n, direction) | |
5500c422 | 5569 | Lisp_Object n; |
7ab12479 JB |
5570 | int direction; |
5571 | { | |
331379bf | 5572 | int count = SPECPDL_INDEX (); |
7ab12479 | 5573 | |
1ea40aa2 | 5574 | xassert (eabs (direction) == 1); |
5500c422 GM |
5575 | |
5576 | /* If selected window's buffer isn't current, make it current for | |
5577 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 5578 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
5579 | { |
5580 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5581 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
5582 | |
5583 | /* Make redisplay consider other windows than just selected_window. */ | |
5584 | ++windows_or_buffers_changed; | |
95605e15 | 5585 | } |
7ab12479 | 5586 | |
265a9e55 | 5587 | if (NILP (n)) |
d4e7cf01 | 5588 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 5589 | else if (EQ (n, Qminus)) |
d4e7cf01 | 5590 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
5591 | else |
5592 | { | |
5593 | n = Fprefix_numeric_value (n); | |
101d1605 | 5594 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 5595 | } |
95605e15 JB |
5596 | |
5597 | unbind_to (count, Qnil); | |
7ab12479 JB |
5598 | } |
5599 | ||
e0965597 | 5600 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P", |
a0a37a6f LT |
5601 | doc: /* Scroll text of current window upward ARG lines. |
5602 | If ARG is omitted or nil, scroll upward by a near full screen. | |
fdb82f93 PJ |
5603 | A near full screen is `next-screen-context-lines' less than a full screen. |
5604 | Negative ARG means scroll downward. | |
5605 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5606 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5607 | (arg) | |
413430c5 | 5608 | Lisp_Object arg; |
7ab12479 | 5609 | { |
413430c5 | 5610 | scroll_command (arg, 1); |
7ab12479 JB |
5611 | return Qnil; |
5612 | } | |
5613 | ||
e0965597 | 5614 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P", |
a0a37a6f LT |
5615 | doc: /* Scroll text of current window down ARG lines. |
5616 | If ARG is omitted or nil, scroll down by a near full screen. | |
fdb82f93 PJ |
5617 | A near full screen is `next-screen-context-lines' less than a full screen. |
5618 | Negative ARG means scroll upward. | |
5619 | If ARG is the atom `-', scroll upward by nearly full screen. | |
5620 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5621 | (arg) | |
413430c5 | 5622 | Lisp_Object arg; |
7ab12479 | 5623 | { |
413430c5 | 5624 | scroll_command (arg, -1); |
7ab12479 JB |
5625 | return Qnil; |
5626 | } | |
ccd0664b RS |
5627 | \f |
5628 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 5629 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 5630 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
5631 | showing that buffer is used. |
5632 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5633 | specifies the window. This takes precedence over | |
5634 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5635 | () |
7ab12479 | 5636 | { |
ccd0664b | 5637 | Lisp_Object window; |
7ab12479 JB |
5638 | |
5639 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 5640 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
5641 | window = Vminibuf_scroll_window; |
5642 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 5643 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
5644 | { |
5645 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 5646 | if (NILP (window)) |
53f76081 | 5647 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
5648 | } |
5649 | else | |
dbc4e1c1 JB |
5650 | { |
5651 | /* Nothing specified; look for a neighboring window on the same | |
5652 | frame. */ | |
5653 | window = Fnext_window (selected_window, Qnil, Qnil); | |
5654 | ||
5655 | if (EQ (window, selected_window)) | |
5656 | /* That didn't get us anywhere; look for a window on another | |
5657 | visible frame. */ | |
5658 | do | |
5659 | window = Fnext_window (window, Qnil, Qt); | |
5660 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
5661 | && ! EQ (window, selected_window)); | |
5662 | } | |
5663 | ||
b7826503 | 5664 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
5665 | |
5666 | if (EQ (window, selected_window)) | |
5667 | error ("There is no other window"); | |
5668 | ||
ccd0664b RS |
5669 | return window; |
5670 | } | |
5671 | ||
5672 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
5673 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
5674 | A near full screen is `next-screen-context-lines' less than a full screen. | |
5675 | The next window is the one below the current one; or the one at the top | |
5676 | if the current one is at the bottom. Negative ARG means scroll downward. | |
5677 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5678 | When calling from a program, supply as argument a number, nil, or `-'. | |
5679 | ||
fdb82f93 | 5680 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5681 | showing that buffer, popping the buffer up if necessary. |
5682 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5683 | specifies the window to scroll. This takes precedence over | |
5684 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5685 | (arg) |
d4e7cf01 | 5686 | Lisp_Object arg; |
ccd0664b | 5687 | { |
d4e7cf01 GM |
5688 | Lisp_Object window; |
5689 | struct window *w; | |
331379bf | 5690 | int count = SPECPDL_INDEX (); |
ccd0664b RS |
5691 | |
5692 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5693 | w = XWINDOW (window); |
7ab12479 JB |
5694 | |
5695 | /* Don't screw up if window_scroll gets an error. */ | |
5696 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5697 | ++windows_or_buffers_changed; |
7ab12479 JB |
5698 | |
5699 | Fset_buffer (w->buffer); | |
5700 | SET_PT (marker_position (w->pointm)); | |
5701 | ||
413430c5 | 5702 | if (NILP (arg)) |
d4e7cf01 | 5703 | window_scroll (window, 1, 1, 1); |
413430c5 | 5704 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5705 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5706 | else |
5707 | { | |
413430c5 EN |
5708 | if (CONSP (arg)) |
5709 | arg = Fcar (arg); | |
b7826503 | 5710 | CHECK_NUMBER (arg); |
101d1605 | 5711 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5712 | } |
5713 | ||
b73ea88e | 5714 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5715 | unbind_to (count, Qnil); |
7ab12479 JB |
5716 | |
5717 | return Qnil; | |
5718 | } | |
5719 | \f | |
e0965597 | 5720 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np", |
fdb82f93 | 5721 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5722 | Default for ARG is window width minus 2. |
5723 | Value is the total amount of leftward horizontal scrolling in | |
5724 | effect after the change. | |
dc297565 RS |
5725 | If SET_MINIMUM is non-nil, the new scroll amount becomes the |
5726 | lower bound for automatic scrolling, i.e. automatic scrolling | |
2fe41216 | 5727 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5728 | by this function. This happens in an interactive call. */) |
5729 | (arg, set_minimum) | |
5730 | register Lisp_Object arg, set_minimum; | |
7ab12479 | 5731 | { |
c67fa410 GM |
5732 | Lisp_Object result; |
5733 | int hscroll; | |
5734 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5735 | |
265a9e55 | 5736 | if (NILP (arg)) |
949cf20f | 5737 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5738 | else |
5739 | arg = Fprefix_numeric_value (arg); | |
5740 | ||
c67fa410 GM |
5741 | hscroll = XINT (w->hscroll) + XINT (arg); |
5742 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
5743 | ||
dc297565 | 5744 | if (!NILP (set_minimum)) |
c67fa410 GM |
5745 | w->min_hscroll = w->hscroll; |
5746 | ||
5747 | return result; | |
7ab12479 JB |
5748 | } |
5749 | ||
e0965597 | 5750 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np", |
fdb82f93 | 5751 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5752 | Default for ARG is window width minus 2. |
5753 | Value is the total amount of leftward horizontal scrolling in | |
5754 | effect after the change. | |
dc297565 RS |
5755 | If SET_MINIMUM is non-nil, the new scroll amount becomes the |
5756 | lower bound for automatic scrolling, i.e. automatic scrolling | |
2fe41216 | 5757 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5758 | by this function. This happens in an interactive call. */) |
5759 | (arg, set_minimum) | |
a93563fd | 5760 | register Lisp_Object arg, set_minimum; |
7ab12479 | 5761 | { |
c67fa410 GM |
5762 | Lisp_Object result; |
5763 | int hscroll; | |
5764 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5765 | |
265a9e55 | 5766 | if (NILP (arg)) |
949cf20f | 5767 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5768 | else |
5769 | arg = Fprefix_numeric_value (arg); | |
5770 | ||
c67fa410 GM |
5771 | hscroll = XINT (w->hscroll) - XINT (arg); |
5772 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
177c0ea7 | 5773 | |
dc297565 | 5774 | if (!NILP (set_minimum)) |
c67fa410 GM |
5775 | w->min_hscroll = w->hscroll; |
5776 | ||
5777 | return result; | |
7ab12479 JB |
5778 | } |
5779 | ||
fa832261 KS |
5780 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5781 | doc: /* Return the window which was selected when entering the minibuffer. | |
5782 | Returns nil, if current window is not a minibuffer window. */) | |
5783 | () | |
5784 | { | |
5785 | if (minibuf_level > 0 | |
5786 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5787 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5788 | return minibuf_selected_window; | |
5789 | ||
5790 | return Qnil; | |
5791 | } | |
5792 | ||
12c8b416 GM |
5793 | /* Value is the number of lines actually displayed in window W, |
5794 | as opposed to its height. */ | |
5795 | ||
5796 | static int | |
5797 | displayed_window_lines (w) | |
5798 | struct window *w; | |
5799 | { | |
5800 | struct it it; | |
5801 | struct text_pos start; | |
5802 | int height = window_box_height (w); | |
5803 | struct buffer *old_buffer; | |
5804 | int bottom_y; | |
5805 | ||
5806 | if (XBUFFER (w->buffer) != current_buffer) | |
5807 | { | |
5808 | old_buffer = current_buffer; | |
5809 | set_buffer_internal (XBUFFER (w->buffer)); | |
5810 | } | |
5811 | else | |
5812 | old_buffer = NULL; | |
5813 | ||
521b203e GM |
5814 | /* In case W->start is out of the accessible range, do something |
5815 | reasonable. This happens in Info mode when Info-scroll-down | |
5816 | calls (recenter -1) while W->start is 1. */ | |
5817 | if (XMARKER (w->start)->charpos < BEGV) | |
5818 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
5819 | else if (XMARKER (w->start)->charpos > ZV) | |
5820 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
5821 | else | |
5822 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5823 | ||
12c8b416 GM |
5824 | start_display (&it, w, start); |
5825 | move_it_vertically (&it, height); | |
c8bc6f65 | 5826 | bottom_y = line_bottom_y (&it); |
12c8b416 | 5827 | |
1de65f51 RS |
5828 | /* rms: On a non-window display, |
5829 | the value of it.vpos at the bottom of the screen | |
5830 | seems to be 1 larger than window_box_height (w). | |
5831 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5832 | when ZV is on the last screen line | |
5833 | moves to the previous screen line instead of the last one. */ | |
5834 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) | |
5835 | height++; | |
5836 | ||
12c8b416 GM |
5837 | /* Add in empty lines at the bottom of the window. */ |
5838 | if (bottom_y < height) | |
5839 | { | |
949cf20f | 5840 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5841 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5842 | } |
5843 | ||
c8bc6f65 GM |
5844 | if (old_buffer) |
5845 | set_buffer_internal (old_buffer); | |
5846 | ||
12c8b416 GM |
5847 | return it.vpos; |
5848 | } | |
5849 | ||
5850 | ||
7ab12479 | 5851 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
fdb82f93 PJ |
5852 | doc: /* Center point in window and redisplay frame. |
5853 | With prefix argument ARG, recenter putting point on screen line ARG | |
5854 | relative to the current window. If ARG is negative, it counts up from the | |
5855 | bottom of the window. (ARG should be less than the height of the window.) | |
5856 | ||
7d1d98ee KS |
5857 | If ARG is omitted or nil, erase the entire frame and then redraw with point |
5858 | in the center of the current window. If `auto-resize-tool-bars' is set to | |
5859 | `grow-only', this resets the tool-bar's height to the minimum height needed. | |
5860 | ||
fdb82f93 PJ |
5861 | Just C-u as prefix means put point in the center of the window |
5862 | and redisplay normally--don't erase and redraw the frame. */) | |
5863 | (arg) | |
413430c5 | 5864 | register Lisp_Object arg; |
7ab12479 | 5865 | { |
6df47b59 | 5866 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
5867 | struct buffer *buf = XBUFFER (w->buffer); |
5868 | struct buffer *obuf = current_buffer; | |
6df47b59 GM |
5869 | int center_p = 0; |
5870 | int charpos, bytepos; | |
f6b43440 RS |
5871 | int iarg; |
5872 | int this_scroll_margin; | |
7ab12479 | 5873 | |
0fa5d25b RS |
5874 | /* If redisplay is suppressed due to an error, try again. */ |
5875 | obuf->display_error_modiff = 0; | |
5876 | ||
413430c5 | 5877 | if (NILP (arg)) |
7ab12479 | 5878 | { |
f02d6d5c KH |
5879 | int i; |
5880 | ||
5881 | /* Invalidate pixel data calculated for all compositions. */ | |
5882 | for (i = 0; i < n_compositions; i++) | |
5883 | composition_table[i]->font = NULL; | |
7ab12479 | 5884 | |
7d1d98ee KS |
5885 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5886 | ||
5887 | Fredraw_frame (WINDOW_FRAME (w)); | |
5888 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
6df47b59 | 5889 | center_p = 1; |
7ab12479 | 5890 | } |
413430c5 | 5891 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5892 | center_p = 1; |
7ab12479 JB |
5893 | else |
5894 | { | |
413430c5 | 5895 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5896 | CHECK_NUMBER (arg); |
ae12ecd7 | 5897 | iarg = XINT (arg); |
7ab12479 JB |
5898 | } |
5899 | ||
478292ed | 5900 | set_buffer_internal (buf); |
7ab12479 | 5901 | |
f6b43440 RS |
5902 | /* Do this after making BUF current |
5903 | in case scroll_margin is buffer-local. */ | |
5904 | this_scroll_margin = max (0, scroll_margin); | |
5905 | this_scroll_margin = min (this_scroll_margin, | |
5906 | XFASTINT (w->total_lines) / 4); | |
5907 | ||
521b203e | 5908 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5909 | have variable-height lines and centering point on the basis of |
5910 | line counts would lead to strange effects. */ | |
521b203e | 5911 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5912 | { |
6df47b59 GM |
5913 | if (center_p) |
5914 | { | |
521b203e GM |
5915 | struct it it; |
5916 | struct text_pos pt; | |
177c0ea7 | 5917 | |
521b203e GM |
5918 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5919 | start_display (&it, w, pt); | |
f204989e | 5920 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5921 | charpos = IT_CHARPOS (it); |
5922 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5923 | } |
f6b43440 | 5924 | else if (iarg < 0) |
6df47b59 | 5925 | { |
521b203e GM |
5926 | struct it it; |
5927 | struct text_pos pt; | |
f6b43440 | 5928 | int nlines = -iarg; |
f204989e KS |
5929 | int extra_line_spacing; |
5930 | int h = window_box_height (w); | |
177c0ea7 | 5931 | |
f6b43440 RS |
5932 | iarg = - max (-iarg, this_scroll_margin); |
5933 | ||
521b203e GM |
5934 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5935 | start_display (&it, w, pt); | |
f204989e KS |
5936 | |
5937 | /* Be sure we have the exact height of the full line containing PT. */ | |
5938 | move_it_by_lines (&it, 0, 1); | |
521b203e | 5939 | |
d466fa4d | 5940 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5941 | height minus what's displayed in the line containing PT, |
5942 | and the lines below. */ | |
f204989e KS |
5943 | it.current_y = 0; |
5944 | it.vpos = 0; | |
d466fa4d GM |
5945 | move_it_by_lines (&it, nlines, 1); |
5946 | ||
f204989e KS |
5947 | if (it.vpos == nlines) |
5948 | h -= it.current_y; | |
5949 | else | |
5950 | { | |
5951 | /* Last line has no newline */ | |
5952 | h -= line_bottom_y (&it); | |
5953 | it.vpos++; | |
5954 | } | |
5955 | ||
5956 | /* Don't reserve space for extra line spacing of last line. */ | |
5957 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5958 | |
5959 | /* If we can't move down NLINES lines because we hit | |
5960 | the end of the buffer, count in some empty lines. */ | |
5961 | if (it.vpos < nlines) | |
f204989e KS |
5962 | { |
5963 | nlines -= it.vpos; | |
5964 | extra_line_spacing = it.extra_line_spacing; | |
5965 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5966 | } | |
5967 | if (h <= 0) | |
5968 | return Qnil; | |
201c831a | 5969 | |
f204989e | 5970 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5971 | start_display (&it, w, pt); |
f204989e KS |
5972 | it.current_y = 0; |
5973 | move_it_vertically_backward (&it, h); | |
5974 | ||
5975 | /* If extra line spacing is present, we may move too far | |
5976 | back. This causes the last line to be only partially | |
5977 | visible (which triggers redisplay to recenter that line | |
5978 | in the middle), so move forward. | |
5979 | But ignore extra line spacing on last line, as it is not | |
5980 | considered to be part of the visible height of the line. | |
5981 | */ | |
5982 | h += extra_line_spacing; | |
5983 | while (-it.current_y > h) | |
5984 | move_it_by_lines (&it, 1, 1); | |
5985 | ||
521b203e GM |
5986 | charpos = IT_CHARPOS (it); |
5987 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5988 | } |
521b203e GM |
5989 | else |
5990 | { | |
5991 | struct position pos; | |
f6b43440 | 5992 | |
f6b43440 RS |
5993 | iarg = max (iarg, this_scroll_margin); |
5994 | ||
5995 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5996 | charpos = pos.bufpos; |
5997 | bytepos = pos.bytepos; | |
5998 | } | |
5999 | } | |
6000 | else | |
6001 | { | |
6002 | struct position pos; | |
6003 | int ht = window_internal_height (w); | |
6004 | ||
6005 | if (center_p) | |
a4429c5b | 6006 | iarg = ht / 2; |
f567c488 KS |
6007 | else if (iarg < 0) |
6008 | iarg += ht; | |
f6b43440 RS |
6009 | |
6010 | /* Don't let it get into the margin at either top or bottom. */ | |
6011 | iarg = max (iarg, this_scroll_margin); | |
6012 | iarg = min (iarg, ht - this_scroll_margin - 1); | |
177c0ea7 | 6013 | |
f6b43440 | 6014 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
6015 | charpos = pos.bufpos; |
6016 | bytepos = pos.bytepos; | |
6017 | } | |
6018 | ||
6019 | /* Set the new window start. */ | |
6020 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 6021 | w->window_end_valid = Qnil; |
177c0ea7 | 6022 | |
95605b1b RS |
6023 | w->optional_new_start = Qt; |
6024 | ||
6df47b59 GM |
6025 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
6026 | w->start_at_line_beg = Qt; | |
6027 | else | |
6028 | w->start_at_line_beg = Qnil; | |
177c0ea7 | 6029 | |
478292ed | 6030 | set_buffer_internal (obuf); |
7ab12479 JB |
6031 | return Qnil; |
6032 | } | |
b7617575 GM |
6033 | |
6034 | ||
81fe0836 | 6035 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
6036 | 0, 1, 0, |
6037 | doc: /* Return the height in lines of the text display area of WINDOW. | |
c85322d0 | 6038 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
6039 | This doesn't include the mode-line (or header-line if any) or any |
6040 | partial-height lines in the text display area. */) | |
6041 | (window) | |
81fe0836 MB |
6042 | Lisp_Object window; |
6043 | { | |
6044 | struct window *w = decode_window (window); | |
6045 | int pixel_height = window_box_height (w); | |
949cf20f | 6046 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
6047 | return make_number (line_height); |
6048 | } | |
6049 | ||
6050 | ||
7ab12479 JB |
6051 | \f |
6052 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
6053 | 1, 1, "P", |
6054 | doc: /* Position point relative to window. | |
6055 | With no argument, position point at center of window. | |
6056 | An argument specifies vertical position within the window; | |
6057 | zero means top of window, negative means relative to bottom of window. */) | |
6058 | (arg) | |
b7617575 | 6059 | Lisp_Object arg; |
7ab12479 | 6060 | { |
b7617575 GM |
6061 | struct window *w = XWINDOW (selected_window); |
6062 | int lines, start; | |
540b6aa0 | 6063 | Lisp_Object window; |
f6b43440 RS |
6064 | #if 0 |
6065 | int this_scroll_margin; | |
6066 | #endif | |
7ab12479 | 6067 | |
b7617575 | 6068 | window = selected_window; |
7ab12479 JB |
6069 | start = marker_position (w->start); |
6070 | if (start < BEGV || start > ZV) | |
6071 | { | |
b7617575 | 6072 | int height = window_internal_height (w); |
cd2be1dd | 6073 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 6074 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
6075 | w->start_at_line_beg = Fbolp (); |
6076 | w->force_start = Qt; | |
6077 | } | |
6078 | else | |
b73ea88e | 6079 | Fgoto_char (w->start); |
7ab12479 | 6080 | |
b7617575 | 6081 | lines = displayed_window_lines (w); |
f6b43440 RS |
6082 | |
6083 | #if 0 | |
6084 | this_scroll_margin = max (0, scroll_margin); | |
6085 | this_scroll_margin = min (this_scroll_margin, lines / 4); | |
6086 | #endif | |
6087 | ||
b7617575 GM |
6088 | if (NILP (arg)) |
6089 | XSETFASTINT (arg, lines / 2); | |
6090 | else | |
6091 | { | |
f6b43440 RS |
6092 | int iarg = XINT (Fprefix_numeric_value (arg)); |
6093 | ||
6094 | if (iarg < 0) | |
6095 | iarg = iarg + lines; | |
6096 | ||
6097 | #if 0 /* This code would prevent move-to-window-line from moving point | |
6098 | to a place inside the scroll margins (which would cause the | |
6099 | next redisplay to scroll). I wrote this code, but then concluded | |
6100 | it is probably better not to install it. However, it is here | |
6101 | inside #if 0 so as not to lose it. -- rms. */ | |
6102 | ||
6103 | /* Don't let it get into the margin at either top or bottom. */ | |
6104 | iarg = max (iarg, this_scroll_margin); | |
6105 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
6106 | #endif | |
6107 | ||
6108 | arg = make_number (iarg); | |
b7617575 GM |
6109 | } |
6110 | ||
c8bc6f65 | 6111 | /* Skip past a partially visible first line. */ |
163784df | 6112 | if (w->vscroll) |
163784df MB |
6113 | XSETINT (arg, XINT (arg) + 1); |
6114 | ||
540b6aa0 | 6115 | return Fvertical_motion (arg, window); |
7ab12479 | 6116 | } |
5500c422 GM |
6117 | |
6118 | ||
7ab12479 | 6119 | \f |
5500c422 GM |
6120 | /*********************************************************************** |
6121 | Window Configuration | |
6122 | ***********************************************************************/ | |
6123 | ||
7ab12479 JB |
6124 | struct save_window_data |
6125 | { | |
d0fdb6da | 6126 | EMACS_UINT size; |
7ab12479 | 6127 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
bdc727bf | 6128 | Lisp_Object selected_frame; |
7ab12479 JB |
6129 | Lisp_Object current_window; |
6130 | Lisp_Object current_buffer; | |
6131 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 6132 | Lisp_Object minibuf_selected_window; |
7ab12479 | 6133 | Lisp_Object root_window; |
bdc727bf | 6134 | Lisp_Object focus_frame; |
cbff28e8 RS |
6135 | /* A vector, each of whose elements is a struct saved_window |
6136 | for one window. */ | |
7ab12479 | 6137 | Lisp_Object saved_windows; |
b05b4e27 SM |
6138 | |
6139 | /* All fields above are traced by the GC. | |
6140 | From `fame-cols' down, the fields are ignored by the GC. */ | |
6141 | ||
6142 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
6143 | int frame_tool_bar_lines; | |
6144 | /* Record the values of window-min-width and window-min-height | |
6145 | so that window sizes remain consistent with them. */ | |
6146 | int min_width, min_height; | |
7ab12479 | 6147 | }; |
ff06df24 | 6148 | |
cbff28e8 | 6149 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 6150 | struct saved_window |
ea68264b GM |
6151 | { |
6152 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
d0fdb6da | 6153 | EMACS_UINT size; |
ea68264b | 6154 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
7ab12479 | 6155 | |
ea68264b GM |
6156 | Lisp_Object window; |
6157 | Lisp_Object buffer, start, pointm, mark; | |
949cf20f KS |
6158 | Lisp_Object left_col, top_line, total_cols, total_lines; |
6159 | Lisp_Object hscroll, min_hscroll; | |
ea68264b GM |
6160 | Lisp_Object parent, prev; |
6161 | Lisp_Object start_at_line_beg; | |
6162 | Lisp_Object display_table; | |
949cf20f KS |
6163 | Lisp_Object orig_top_line, orig_total_lines; |
6164 | Lisp_Object left_margin_cols, right_margin_cols; | |
6165 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
6166 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type; | |
6ad0381c | 6167 | Lisp_Object dedicated; |
ea68264b GM |
6168 | }; |
6169 | ||
7ab12479 JB |
6170 | #define SAVED_WINDOW_N(swv,n) \ |
6171 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
6172 | ||
6173 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 PJ |
6174 | doc: /* Return t if OBJECT is a window-configuration object. */) |
6175 | (object) | |
413430c5 | 6176 | Lisp_Object object; |
7ab12479 | 6177 | { |
6ad0381c | 6178 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
6179 | } |
6180 | ||
3f8ab7bd | 6181 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 PJ |
6182 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
6183 | (config) | |
3f8ab7bd RS |
6184 | Lisp_Object config; |
6185 | { | |
6186 | register struct save_window_data *data; | |
6187 | struct Lisp_Vector *saved_windows; | |
6188 | ||
663fbbba | 6189 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
6190 | |
6191 | data = (struct save_window_data *) XVECTOR (config); | |
6192 | saved_windows = XVECTOR (data->saved_windows); | |
6193 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
6194 | } | |
6195 | ||
d5b2799e | 6196 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
6197 | Sset_window_configuration, 1, 1, 0, |
6198 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
6199 | CONFIGURATION must be a value previously returned | |
6200 | by `current-window-configuration' (which see). | |
6201 | If CONFIGURATION was made from a frame that is now deleted, | |
6202 | only frame-independent values can be restored. In this case, | |
6203 | the return value is nil. Otherwise the value is t. */) | |
6204 | (configuration) | |
2f83aebe | 6205 | Lisp_Object configuration; |
7ab12479 | 6206 | { |
7ab12479 JB |
6207 | register struct save_window_data *data; |
6208 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 6209 | Lisp_Object new_current_buffer; |
fd482be5 | 6210 | Lisp_Object frame; |
44fa5b1e | 6211 | FRAME_PTR f; |
72695e47 | 6212 | int old_point = -1; |
7ab12479 | 6213 | |
663fbbba | 6214 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 6215 | |
2f83aebe | 6216 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
6217 | saved_windows = XVECTOR (data->saved_windows); |
6218 | ||
7ab12479 | 6219 | new_current_buffer = data->current_buffer; |
265a9e55 | 6220 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 6221 | new_current_buffer = Qnil; |
72695e47 | 6222 | else |
73cadfc1 DK |
6223 | { |
6224 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
6225 | /* The code further down "preserves point" by saving here PT in |
6226 | old_point and then setting it later back into PT. When the | |
6227 | current-selected-window and the final-selected-window both show | |
6228 | the current buffer, this suffers from the problem that the | |
6229 | current PT is the window-point of the current-selected-window, | |
6230 | while the final PT is the point of the final-selected-window, so | |
6231 | this copy from one PT to the other would end up moving the | |
6232 | window-point of the final-selected-window to the window-point of | |
6233 | the current-selected-window. So we have to be careful which | |
6234 | point of the current-buffer we copy into old_point. */ | |
6235 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
6236 | && WINDOWP (selected_window) | |
6237 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) | |
6238 | && !EQ (selected_window, data->current_window)) | |
6239 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
6240 | else | |
6241 | old_point = PT; | |
73cadfc1 | 6242 | else |
203eb0aa SM |
6243 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
6244 | point in new_current_buffer as of the last time this buffer was | |
6245 | used. This can be non-deterministic since it can be changed by | |
6246 | things like jit-lock by mere temporary selection of some random | |
6247 | window that happens to show this buffer. | |
6248 | So if possible we want this arbitrary choice of "which point" to | |
6249 | be the one from the to-be-selected-window so as to prevent this | |
6250 | window's cursor from being copied from another window. */ | |
6251 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
6252 | /* If current_window = selected_window, its point is in BUF_PT. */ | |
6253 | && !EQ (selected_window, data->current_window)) | |
6254 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
6255 | else | |
6256 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 6257 | } |
7ab12479 | 6258 | |
fd482be5 JB |
6259 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
6260 | f = XFRAME (frame); | |
177c0ea7 | 6261 | |
fd482be5 JB |
6262 | /* If f is a dead frame, don't bother rebuilding its window tree. |
6263 | However, there is other stuff we should still try to do below. */ | |
6264 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 6265 | { |
fd482be5 JB |
6266 | register struct window *w; |
6267 | register struct saved_window *p; | |
5500c422 GM |
6268 | struct window *root_window; |
6269 | struct window **leaf_windows; | |
6270 | int n_leaf_windows; | |
c4280705 | 6271 | int k, i, n; |
fd482be5 JB |
6272 | |
6273 | /* If the frame has been resized since this window configuration was | |
6274 | made, we change the frame to the size specified in the | |
6275 | configuration, restore the configuration, and then resize it | |
6276 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
6277 | int previous_frame_lines = FRAME_LINES (f); |
6278 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 6279 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 6280 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 6281 | |
d2b35234 RS |
6282 | /* The mouse highlighting code could get screwed up |
6283 | if it runs during this. */ | |
6284 | BLOCK_INPUT; | |
6285 | ||
b05b4e27 SM |
6286 | if (data->frame_lines != previous_frame_lines |
6287 | || data->frame_cols != previous_frame_cols) | |
6288 | change_frame_size (f, data->frame_lines, | |
6289 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 6290 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 6291 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 6292 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
6293 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
6294 | make_number (0)); | |
4314246f | 6295 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 6296 | if (data->frame_tool_bar_lines |
9ea173e8 | 6297 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
6298 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
6299 | make_number (0)); | |
4314246f | 6300 | #endif |
217f2871 | 6301 | #endif |
fd482be5 | 6302 | |
a46c0153 RS |
6303 | /* "Swap out" point from the selected window's buffer |
6304 | into the window itself. (Normally the pointm of the selected | |
6305 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
6306 | restoring the window contents, and prevent it from |
6307 | being done later on when we select a new window. */ | |
596ae0cf RS |
6308 | if (! NILP (XWINDOW (selected_window)->buffer)) |
6309 | { | |
6310 | w = XWINDOW (selected_window); | |
6311 | set_marker_both (w->pointm, | |
6312 | w->buffer, | |
6313 | BUF_PT (XBUFFER (w->buffer)), | |
6314 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
6315 | } | |
6316 | ||
fd482be5 | 6317 | windows_or_buffers_changed++; |
29aeee73 | 6318 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 6319 | |
5500c422 | 6320 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 6321 | is a serious redisplay flickering problem. What we would |
5500c422 GM |
6322 | really like to do is to free only those matrices not reused |
6323 | below. */ | |
6324 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
6325 | leaf_windows | |
6326 | = (struct window **) alloca (count_windows (root_window) | |
6327 | * sizeof (struct window *)); | |
6328 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
6329 | ||
756b6edc RS |
6330 | /* Temporarily avoid any problems with windows that are smaller |
6331 | than they are supposed to be. */ | |
6332 | window_min_height = 1; | |
6333 | window_min_width = 1; | |
6334 | ||
fd482be5 JB |
6335 | /* Kludge Alert! |
6336 | Mark all windows now on frame as "deleted". | |
6337 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 6338 | |
fd482be5 JB |
6339 | Save their current buffers in their height fields, since we may |
6340 | need it later, if a buffer saved in the configuration is now | |
6341 | dead. */ | |
6342 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
6343 | ||
6344 | for (k = 0; k < saved_windows->size; k++) | |
6345 | { | |
6346 | p = SAVED_WINDOW_N (saved_windows, k); | |
6347 | w = XWINDOW (p->window); | |
6348 | w->next = Qnil; | |
7ab12479 | 6349 | |
fd482be5 JB |
6350 | if (!NILP (p->parent)) |
6351 | w->parent = SAVED_WINDOW_N (saved_windows, | |
6352 | XFASTINT (p->parent))->window; | |
6353 | else | |
6354 | w->parent = Qnil; | |
7ab12479 | 6355 | |
fd482be5 | 6356 | if (!NILP (p->prev)) |
7ab12479 | 6357 | { |
fd482be5 JB |
6358 | w->prev = SAVED_WINDOW_N (saved_windows, |
6359 | XFASTINT (p->prev))->window; | |
6360 | XWINDOW (w->prev)->next = p->window; | |
6361 | } | |
6362 | else | |
6363 | { | |
6364 | w->prev = Qnil; | |
6365 | if (!NILP (w->parent)) | |
6366 | { | |
949cf20f | 6367 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 JB |
6368 | { |
6369 | XWINDOW (w->parent)->vchild = p->window; | |
6370 | XWINDOW (w->parent)->hchild = Qnil; | |
6371 | } | |
6372 | else | |
6373 | { | |
6374 | XWINDOW (w->parent)->hchild = p->window; | |
6375 | XWINDOW (w->parent)->vchild = Qnil; | |
6376 | } | |
6377 | } | |
6378 | } | |
6379 | ||
6380 | /* If we squirreled away the buffer in the window's height, | |
6381 | restore it now. */ | |
949cf20f KS |
6382 | if (BUFFERP (w->total_lines)) |
6383 | w->buffer = w->total_lines; | |
6384 | w->left_col = p->left_col; | |
6385 | w->top_line = p->top_line; | |
6386 | w->total_cols = p->total_cols; | |
6387 | w->total_lines = p->total_lines; | |
fd482be5 | 6388 | w->hscroll = p->hscroll; |
ea68264b | 6389 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 6390 | w->display_table = p->display_table; |
949cf20f KS |
6391 | w->orig_top_line = p->orig_top_line; |
6392 | w->orig_total_lines = p->orig_total_lines; | |
6393 | w->left_margin_cols = p->left_margin_cols; | |
6394 | w->right_margin_cols = p->right_margin_cols; | |
6395 | w->left_fringe_width = p->left_fringe_width; | |
6396 | w->right_fringe_width = p->right_fringe_width; | |
6397 | w->fringes_outside_margins = p->fringes_outside_margins; | |
6398 | w->scroll_bar_width = p->scroll_bar_width; | |
6399 | w->vertical_scroll_bar_type = p->vertical_scroll_bar_type; | |
6ad0381c | 6400 | w->dedicated = p->dedicated; |
d834a2e9 | 6401 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 6402 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
6403 | |
6404 | /* Reinstall the saved buffer and pointers into it. */ | |
6405 | if (NILP (p->buffer)) | |
6406 | w->buffer = p->buffer; | |
6407 | else | |
6408 | { | |
6409 | if (!NILP (XBUFFER (p->buffer)->name)) | |
6410 | /* If saved buffer is alive, install it. */ | |
6411 | { | |
6412 | w->buffer = p->buffer; | |
6413 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
6414 | set_marker_restricted (w->start, p->start, w->buffer); |
6415 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 6416 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 6417 | p->mark, w->buffer); |
fd482be5 JB |
6418 | |
6419 | /* As documented in Fcurrent_window_configuration, don't | |
243a5ce6 RS |
6420 | restore the location of point in the buffer which was |
6421 | current when the window configuration was recorded. */ | |
6b54027b RS |
6422 | if (!EQ (p->buffer, new_current_buffer) |
6423 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
6424 | Fgoto_char (w->pointm); |
6425 | } | |
52a68e98 RS |
6426 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
6427 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 6428 | { |
fd482be5 JB |
6429 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
6430 | /* This will set the markers to beginning of visible | |
6431 | range. */ | |
6432 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
6433 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
6434 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
6435 | } |
6436 | else | |
fd482be5 | 6437 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 6438 | are real. */ |
7ab12479 | 6439 | { |
fd482be5 JB |
6440 | /* Set window markers at start of visible range. */ |
6441 | if (XMARKER (w->start)->buffer == 0) | |
6442 | set_marker_restricted (w->start, make_number (0), | |
6443 | w->buffer); | |
6444 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
6445 | set_marker_restricted_both (w->pointm, w->buffer, |
6446 | BUF_PT (XBUFFER (w->buffer)), | |
6447 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 6448 | w->start_at_line_beg = Qt; |
7ab12479 JB |
6449 | } |
6450 | } | |
6451 | } | |
9ace597f | 6452 | |
fd482be5 | 6453 | FRAME_ROOT_WINDOW (f) = data->root_window; |
719eaeb1 GM |
6454 | /* Prevent "swapping out point" in the old selected window |
6455 | using the buffer that has been restored into it. | |
a46c0153 | 6456 | We already swapped out point that from that window's old buffer. */ |
719eaeb1 | 6457 | selected_window = Qnil; |
a46c0153 RS |
6458 | |
6459 | /* Arrange *not* to restore point in the buffer that was | |
6460 | current when the window configuration was saved. */ | |
243a5ce6 RS |
6461 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
6462 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 6463 | make_number (old_point), |
243a5ce6 | 6464 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 6465 | |
14d87dc9 | 6466 | Fselect_window (data->current_window, Qnil); |
396a830c RS |
6467 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
6468 | = selected_window; | |
7ab12479 | 6469 | |
db269683 | 6470 | if (NILP (data->focus_frame) |
017b2bad | 6471 | || (FRAMEP (data->focus_frame) |
db269683 JB |
6472 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
6473 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 6474 | |
fd482be5 JB |
6475 | #if 0 /* I don't understand why this is needed, and it causes problems |
6476 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 6477 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 | 6478 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
d12f6f83 | 6479 | 0, 0); |
fd482be5 JB |
6480 | #endif |
6481 | ||
6482 | /* Set the screen height to the value it had before this function. */ | |
949cf20f KS |
6483 | if (previous_frame_lines != FRAME_LINES (f) |
6484 | || previous_frame_cols != FRAME_COLS (f)) | |
6485 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 6486 | 0, 0, 0); |
e3678b64 | 6487 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 6488 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
6489 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
6490 | make_number (0)); | |
4314246f | 6491 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
6492 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
6493 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
6494 | make_number (0)); | |
4314246f | 6495 | #endif |
217f2871 | 6496 | #endif |
d2b35234 | 6497 | |
5500c422 | 6498 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
6499 | for (i = n = 0; i < n_leaf_windows; ++i) |
6500 | { | |
6501 | if (NILP (leaf_windows[i]->buffer)) | |
6502 | { | |
6503 | /* Assert it's not reused as a combination. */ | |
177c0ea7 | 6504 | xassert (NILP (leaf_windows[i]->hchild) |
c4280705 GM |
6505 | && NILP (leaf_windows[i]->vchild)); |
6506 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
6507 | } |
6508 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
6509 | ++n; | |
6510 | } | |
177c0ea7 | 6511 | |
5500c422 GM |
6512 | adjust_glyphs (f); |
6513 | ||
d2b35234 | 6514 | UNBLOCK_INPUT; |
756b6edc | 6515 | |
478292ed RS |
6516 | /* Fselect_window will have made f the selected frame, so we |
6517 | reselect the proper frame here. Fhandle_switch_frame will change the | |
6518 | selected window too, but that doesn't make the call to | |
6519 | Fselect_window above totally superfluous; it still sets f's | |
6520 | selected window. */ | |
6521 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
d12f6f83 | 6522 | do_switch_frame (data->selected_frame, 0, 0); |
478292ed | 6523 | |
eeca6f6f | 6524 | run_window_configuration_change_hook (f); |
478292ed | 6525 | } |
bdc727bf JB |
6526 | |
6527 | if (!NILP (new_current_buffer)) | |
243a5ce6 | 6528 | Fset_buffer (new_current_buffer); |
bdc727bf | 6529 | |
478292ed | 6530 | /* Restore the minimum heights recorded in the configuration. */ |
b05b4e27 SM |
6531 | window_min_height = data->min_height; |
6532 | window_min_width = data->min_width; | |
543f5fb1 | 6533 | |
478292ed | 6534 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 6535 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 6536 | |
3f8ab7bd | 6537 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
6538 | } |
6539 | ||
44fa5b1e | 6540 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
6541 | by setting their buffers to nil. */ |
6542 | ||
fd482be5 | 6543 | void |
7ab12479 JB |
6544 | delete_all_subwindows (w) |
6545 | register struct window *w; | |
6546 | { | |
265a9e55 | 6547 | if (!NILP (w->next)) |
7ab12479 | 6548 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 6549 | if (!NILP (w->vchild)) |
7ab12479 | 6550 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 6551 | if (!NILP (w->hchild)) |
7ab12479 | 6552 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af | 6553 | |
949cf20f | 6554 | w->total_lines = w->buffer; /* See Fset_window_configuration for excuse. */ |
605be8af | 6555 | |
86e48436 RS |
6556 | if (!NILP (w->buffer)) |
6557 | unshow_buffer (w); | |
6558 | ||
605be8af JB |
6559 | /* We set all three of these fields to nil, to make sure that we can |
6560 | distinguish this dead window from any live window. Live leaf | |
6561 | windows will have buffer set, and combination windows will have | |
6562 | vchild or hchild set. */ | |
6563 | w->buffer = Qnil; | |
6564 | w->vchild = Qnil; | |
6565 | w->hchild = Qnil; | |
acf70840 GM |
6566 | |
6567 | Vwindow_list = Qnil; | |
7ab12479 JB |
6568 | } |
6569 | \f | |
6570 | static int | |
6571 | count_windows (window) | |
6572 | register struct window *window; | |
6573 | { | |
6574 | register int count = 1; | |
265a9e55 | 6575 | if (!NILP (window->next)) |
7ab12479 | 6576 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 6577 | if (!NILP (window->vchild)) |
7ab12479 | 6578 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 6579 | if (!NILP (window->hchild)) |
7ab12479 JB |
6580 | count += count_windows (XWINDOW (window->hchild)); |
6581 | return count; | |
6582 | } | |
6583 | ||
5500c422 | 6584 | |
177c0ea7 | 6585 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 GM |
6586 | Value is last index + 1. */ |
6587 | ||
6588 | static int | |
6589 | get_leaf_windows (w, flat, i) | |
6590 | struct window *w; | |
6591 | struct window **flat; | |
6592 | int i; | |
6593 | { | |
6594 | while (w) | |
6595 | { | |
6596 | if (!NILP (w->hchild)) | |
6597 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
6598 | else if (!NILP (w->vchild)) | |
6599 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 6600 | else |
5500c422 GM |
6601 | flat[i++] = w; |
6602 | ||
6603 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6604 | } | |
6605 | ||
6606 | return i; | |
6607 | } | |
6608 | ||
6609 | ||
6610 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
6611 | null if W's current matrix is invalid, so that no meaningfull glyph | |
6612 | can be returned. */ | |
6613 | ||
6614 | struct glyph * | |
6615 | get_phys_cursor_glyph (w) | |
6616 | struct window *w; | |
6617 | { | |
6618 | struct glyph_row *row; | |
6619 | struct glyph *glyph; | |
6620 | ||
6621 | if (w->phys_cursor.vpos >= 0 | |
6622 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
6623 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
6624 | row->enabled_p) | |
6625 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
6626 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
6627 | else | |
6628 | glyph = NULL; | |
6629 | ||
6630 | return glyph; | |
6631 | } | |
6632 | ||
6633 | ||
7ab12479 JB |
6634 | static int |
6635 | save_window_save (window, vector, i) | |
6636 | Lisp_Object window; | |
6637 | struct Lisp_Vector *vector; | |
6638 | int i; | |
6639 | { | |
6640 | register struct saved_window *p; | |
6641 | register struct window *w; | |
6642 | register Lisp_Object tem; | |
6643 | ||
265a9e55 | 6644 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
6645 | { |
6646 | p = SAVED_WINDOW_N (vector, i); | |
6647 | w = XWINDOW (window); | |
6648 | ||
2a1893f4 | 6649 | XSETFASTINT (w->temslot, i); i++; |
7ab12479 JB |
6650 | p->window = window; |
6651 | p->buffer = w->buffer; | |
949cf20f KS |
6652 | p->left_col = w->left_col; |
6653 | p->top_line = w->top_line; | |
6654 | p->total_cols = w->total_cols; | |
6655 | p->total_lines = w->total_lines; | |
7ab12479 | 6656 | p->hscroll = w->hscroll; |
ea68264b | 6657 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 6658 | p->display_table = w->display_table; |
949cf20f KS |
6659 | p->orig_top_line = w->orig_top_line; |
6660 | p->orig_total_lines = w->orig_total_lines; | |
6661 | p->left_margin_cols = w->left_margin_cols; | |
6662 | p->right_margin_cols = w->right_margin_cols; | |
6663 | p->left_fringe_width = w->left_fringe_width; | |
6664 | p->right_fringe_width = w->right_fringe_width; | |
6665 | p->fringes_outside_margins = w->fringes_outside_margins; | |
6666 | p->scroll_bar_width = w->scroll_bar_width; | |
6667 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6ad0381c | 6668 | p->dedicated = w->dedicated; |
265a9e55 | 6669 | if (!NILP (w->buffer)) |
7ab12479 JB |
6670 | { |
6671 | /* Save w's value of point in the window configuration. | |
6672 | If w is the selected window, then get the value of point | |
6673 | from the buffer; pointm is garbage in the selected window. */ | |
6674 | if (EQ (window, selected_window)) | |
6675 | { | |
6676 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
6677 | set_marker_both (p->pointm, w->buffer, |
6678 | BUF_PT (XBUFFER (w->buffer)), | |
6679 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
6680 | } |
6681 | else | |
eeb82665 | 6682 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 6683 | |
eeb82665 | 6684 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
6685 | p->start_at_line_beg = w->start_at_line_beg; |
6686 | ||
6687 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 6688 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6689 | } |
6690 | else | |
6691 | { | |
6692 | p->pointm = Qnil; | |
6693 | p->start = Qnil; | |
6694 | p->mark = Qnil; | |
6695 | p->start_at_line_beg = Qnil; | |
6696 | } | |
6697 | ||
265a9e55 | 6698 | if (NILP (w->parent)) |
7ab12479 JB |
6699 | p->parent = Qnil; |
6700 | else | |
6701 | p->parent = XWINDOW (w->parent)->temslot; | |
6702 | ||
265a9e55 | 6703 | if (NILP (w->prev)) |
7ab12479 JB |
6704 | p->prev = Qnil; |
6705 | else | |
6706 | p->prev = XWINDOW (w->prev)->temslot; | |
6707 | ||
265a9e55 | 6708 | if (!NILP (w->vchild)) |
7ab12479 | 6709 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 6710 | if (!NILP (w->hchild)) |
7ab12479 JB |
6711 | i = save_window_save (w->hchild, vector, i); |
6712 | } | |
6713 | ||
6714 | return i; | |
6715 | } | |
6716 | ||
a0d76c27 | 6717 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6718 | Scurrent_window_configuration, 0, 1, 0, |
6719 | doc: /* Return an object representing the current window configuration of FRAME. | |
6720 | If FRAME is nil or omitted, use the selected frame. | |
6721 | This describes the number of windows, their sizes and current buffers, | |
6722 | and for each displayed buffer, where display starts, and the positions of | |
6723 | point and mark. An exception is made for point in the current buffer: | |
6724 | its value is -not- saved. | |
6725 | This also records the currently selected frame, and FRAME's focus | |
6726 | redirection (see `redirect-frame-focus'). */) | |
6727 | (frame) | |
44fa5b1e | 6728 | Lisp_Object frame; |
7ab12479 JB |
6729 | { |
6730 | register Lisp_Object tem; | |
6731 | register int n_windows; | |
6732 | register struct save_window_data *data; | |
6733 | register int i; | |
44fa5b1e | 6734 | FRAME_PTR f; |
43bad991 | 6735 | |
44fa5b1e | 6736 | if (NILP (frame)) |
1ae1a37d | 6737 | frame = selected_frame; |
b7826503 | 6738 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 6739 | f = XFRAME (frame); |
7ab12479 | 6740 | |
44fa5b1e | 6741 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
6742 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
6743 | PVEC_WINDOW_CONFIGURATION); | |
6744 | ||
6745 | data->frame_cols = FRAME_COLS (f); | |
6746 | data->frame_lines = FRAME_LINES (f); | |
6747 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
6748 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 6749 | data->selected_frame = selected_frame; |
44fa5b1e | 6750 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6751 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6752 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6753 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6754 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6755 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
b05b4e27 SM |
6756 | data->min_height = window_min_height; |
6757 | data->min_width = window_min_width; | |
7ab12479 JB |
6758 | tem = Fmake_vector (make_number (n_windows), Qnil); |
6759 | data->saved_windows = tem; | |
6760 | for (i = 0; i < n_windows; i++) | |
6761 | XVECTOR (tem)->contents[i] | |
8a450f0a | 6762 | = Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil); |
a1d58e5b | 6763 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6764 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6765 | return (tem); |
6766 | } | |
6767 | ||
6768 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
fdb82f93 | 6769 | 0, UNEVALLED, 0, |
a0a37a6f LT |
6770 | doc: /* Execute BODY, preserving window sizes and contents. |
6771 | Return the value of the last form in BODY. | |
fdb82f93 PJ |
6772 | Restore which buffer appears in which window, where display starts, |
6773 | and the value of point and mark for each window. | |
6774 | Also restore the choice of selected window. | |
6775 | Also restore which buffer is current. | |
6924dda6 | 6776 | Does not restore the value of point in current buffer. |
7254a30c | 6777 | usage: (save-window-excursion BODY...) */) |
fdb82f93 | 6778 | (args) |
7ab12479 JB |
6779 | Lisp_Object args; |
6780 | { | |
6781 | register Lisp_Object val; | |
aed13378 | 6782 | register int count = SPECPDL_INDEX (); |
7ab12479 JB |
6783 | |
6784 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 6785 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
6786 | val = Fprogn (args); |
6787 | return unbind_to (count, val); | |
6788 | } | |
5500c422 | 6789 | |
94e16dd5 KS |
6790 | |
6791 | \f | |
6792 | /*********************************************************************** | |
6793 | Window Split Tree | |
6794 | ***********************************************************************/ | |
6795 | ||
6796 | static Lisp_Object | |
c16e1cc3 | 6797 | window_tree (w) |
94e16dd5 KS |
6798 | struct window *w; |
6799 | { | |
6800 | Lisp_Object tail = Qnil; | |
6801 | Lisp_Object result = Qnil; | |
6802 | ||
6803 | while (w) | |
6804 | { | |
6805 | Lisp_Object wn; | |
6806 | ||
6807 | XSETWINDOW (wn, w); | |
6808 | if (!NILP (w->hchild)) | |
6809 | wn = Fcons (Qnil, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6810 | window_tree (XWINDOW (w->hchild)))); |
94e16dd5 KS |
6811 | else if (!NILP (w->vchild)) |
6812 | wn = Fcons (Qt, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6813 | window_tree (XWINDOW (w->vchild)))); |
94e16dd5 KS |
6814 | |
6815 | if (NILP (result)) | |
6816 | { | |
6817 | result = tail = Fcons (wn, Qnil); | |
6818 | } | |
6819 | else | |
6820 | { | |
6821 | XSETCDR (tail, Fcons (wn, Qnil)); | |
6822 | tail = XCDR (tail); | |
6823 | } | |
6824 | ||
6825 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6826 | } | |
6827 | ||
6828 | return result; | |
6829 | } | |
6830 | ||
6831 | ||
6832 | ||
c16e1cc3 | 6833 | DEFUN ("window-tree", Fwindow_tree, Swindow_tree, |
94e16dd5 | 6834 | 0, 1, 0, |
c16e1cc3 | 6835 | doc: /* Return the window tree for frame FRAME. |
94e16dd5 KS |
6836 | |
6837 | The return value is a list of the form (ROOT MINI), where ROOT | |
c16e1cc3 | 6838 | represents the window tree of the frame's root window, and MINI |
94e16dd5 KS |
6839 | is the frame's minibuffer window. |
6840 | ||
6841 | If the root window is not split, ROOT is the root window itself. | |
6842 | Otherwise, ROOT is a list (DIR EDGES W1 W2 ...) where DIR is nil for a | |
008171a4 | 6843 | horizontal split, and t for a vertical split, EDGES gives the combined |
94e16dd5 KS |
6844 | size and position of the subwindows in the split, and the rest of the |
6845 | elements are the subwindows in the split. Each of the subwindows may | |
6846 | again be a window or a list representing a window split, and so on. | |
6847 | EDGES is a list \(LEFT TOP RIGHT BOTTOM) as returned by `window-edges'. | |
6848 | ||
6849 | If FRAME is nil or omitted, return information on the currently | |
6850 | selected frame. */) | |
6851 | (frame) | |
6852 | Lisp_Object frame; | |
6853 | { | |
94e16dd5 KS |
6854 | FRAME_PTR f; |
6855 | ||
6856 | if (NILP (frame)) | |
6857 | frame = selected_frame; | |
6858 | ||
6859 | CHECK_FRAME (frame); | |
6860 | f = XFRAME (frame); | |
6861 | ||
6862 | if (!FRAME_LIVE_P (f)) | |
6863 | return Qnil; | |
6864 | ||
c16e1cc3 | 6865 | return window_tree (XWINDOW (FRAME_ROOT_WINDOW (f))); |
94e16dd5 KS |
6866 | } |
6867 | ||
5500c422 GM |
6868 | \f |
6869 | /*********************************************************************** | |
6870 | Marginal Areas | |
6871 | ***********************************************************************/ | |
6872 | ||
6873 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6874 | 2, 3, 0, |
fdb82f93 | 6875 | doc: /* Set width of marginal areas of window WINDOW. |
6b61353c KH |
6876 | If WINDOW is nil, set margins of the currently selected window. |
6877 | Second arg LEFT-WIDTH specifies the number of character cells to | |
6878 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6879 | does the same for the right marginal area. A nil width parameter | |
6880 | means no margin. */) | |
c10ce82e JB |
6881 | (window, left_width, right_width) |
6882 | Lisp_Object window, left_width, right_width; | |
5500c422 GM |
6883 | { |
6884 | struct window *w = decode_window (window); | |
5500c422 | 6885 | |
6b61353c KH |
6886 | /* Translate negative or zero widths to nil. |
6887 | Margins that are too wide have to be checked elsewhere. */ | |
949cf20f | 6888 | |
c10ce82e | 6889 | if (!NILP (left_width)) |
6b61353c | 6890 | { |
c10ce82e JB |
6891 | CHECK_NUMBER (left_width); |
6892 | if (XINT (left_width) <= 0) | |
6893 | left_width = Qnil; | |
6b61353c | 6894 | } |
5500c422 | 6895 | |
c10ce82e | 6896 | if (!NILP (right_width)) |
6b61353c | 6897 | { |
c10ce82e JB |
6898 | CHECK_NUMBER (right_width); |
6899 | if (XINT (right_width) <= 0) | |
6900 | right_width = Qnil; | |
6b61353c | 6901 | } |
5500c422 | 6902 | |
c10ce82e JB |
6903 | if (!EQ (w->left_margin_cols, left_width) |
6904 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6905 | { |
c10ce82e JB |
6906 | w->left_margin_cols = left_width; |
6907 | w->right_margin_cols = right_width; | |
949cf20f KS |
6908 | |
6909 | adjust_window_margins (w); | |
6910 | ||
6911 | ++windows_or_buffers_changed; | |
6912 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6913 | } | |
5500c422 | 6914 | |
5500c422 GM |
6915 | return Qnil; |
6916 | } | |
6917 | ||
6918 | ||
6919 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6920 | 0, 1, 0, | |
fdb82f93 PJ |
6921 | doc: /* Get width of marginal areas of window WINDOW. |
6922 | If WINDOW is omitted or nil, use the currently selected window. | |
6923 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
6924 | If a marginal area does not exist, its width will be returned | |
6925 | as nil. */) | |
6926 | (window) | |
5500c422 GM |
6927 | Lisp_Object window; |
6928 | { | |
6929 | struct window *w = decode_window (window); | |
949cf20f KS |
6930 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
6931 | } | |
6932 | ||
6933 | ||
6934 | \f | |
6935 | /*********************************************************************** | |
6936 | Fringes | |
6937 | ***********************************************************************/ | |
6938 | ||
6939 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, | |
6940 | 2, 4, 0, | |
6b61353c KH |
6941 | doc: /* Set the fringe widths of window WINDOW. |
6942 | If WINDOW is nil, set the fringe widths of the currently selected | |
6943 | window. | |
6944 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for | |
6945 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6946 | fringe width. If a fringe width arg is nil, that means to use the | |
6947 | frame's default fringe width. Default fringe widths can be set with | |
6948 | the command `set-fringe-style'. | |
6949 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
6950 | outside of the display margins. By default, fringes are drawn between | |
6951 | display marginal areas and the text area. */) | |
c10ce82e JB |
6952 | (window, left_width, right_width, outside_margins) |
6953 | Lisp_Object window, left_width, right_width, outside_margins; | |
949cf20f KS |
6954 | { |
6955 | struct window *w = decode_window (window); | |
6956 | ||
c10ce82e JB |
6957 | if (!NILP (left_width)) |
6958 | CHECK_NATNUM (left_width); | |
6959 | if (!NILP (right_width)) | |
6960 | CHECK_NATNUM (right_width); | |
5a857365 | 6961 | |
017e297e | 6962 | /* Do nothing on a tty. */ |
d46c6df5 NR |
6963 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
6964 | && (!EQ (w->left_fringe_width, left_width) | |
6965 | || !EQ (w->right_fringe_width, right_width) | |
6966 | || !EQ (w->fringes_outside_margins, outside_margins))) | |
949cf20f | 6967 | { |
c10ce82e JB |
6968 | w->left_fringe_width = left_width; |
6969 | w->right_fringe_width = right_width; | |
949cf20f KS |
6970 | w->fringes_outside_margins = outside_margins; |
6971 | ||
6972 | adjust_window_margins (w); | |
6973 | ||
6974 | clear_glyph_matrix (w->current_matrix); | |
6975 | w->window_end_valid = Qnil; | |
6976 | ||
6977 | ++windows_or_buffers_changed; | |
6978 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6979 | } | |
6980 | ||
6981 | return Qnil; | |
6982 | } | |
6983 | ||
6984 | ||
6985 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6986 | 0, 1, 0, | |
6987 | doc: /* Get width of fringes of window WINDOW. | |
6988 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c | 6989 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
949cf20f KS |
6990 | (window) |
6991 | Lisp_Object window; | |
6992 | { | |
6993 | struct window *w = decode_window (window); | |
d46c6df5 | 6994 | |
949cf20f KS |
6995 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6996 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
d46c6df5 NR |
6997 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
6998 | ? Qt : Qnil), Qnil))); | |
949cf20f KS |
6999 | } |
7000 | ||
7001 | ||
7002 | \f | |
7003 | /*********************************************************************** | |
7004 | Scroll bars | |
7005 | ***********************************************************************/ | |
7006 | ||
7007 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, Sset_window_scroll_bars, | |
7008 | 2, 4, 0, | |
7009 | doc: /* Set width and type of scroll bars of window WINDOW. | |
7010 | If window is nil, set scroll bars of the currently selected window. | |
7011 | Second parameter WIDTH specifies the pixel width for the scroll bar; | |
7012 | this is automatically adjusted to a multiple of the frame column width. | |
7013 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
7014 | bar: left, right, or nil. | |
6b61353c | 7015 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
7016 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
7017 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
79fd290e JB |
7018 | (window, width, vertical_type, horizontal_type) |
7019 | Lisp_Object window, width, vertical_type, horizontal_type; | |
949cf20f KS |
7020 | { |
7021 | struct window *w = decode_window (window); | |
7022 | ||
7023 | if (!NILP (width)) | |
0f8fe9a2 SM |
7024 | { |
7025 | CHECK_NATNUM (width); | |
949cf20f | 7026 | |
0f8fe9a2 SM |
7027 | if (XINT (width) == 0) |
7028 | vertical_type = Qnil; | |
7029 | } | |
949cf20f | 7030 | |
413a79ad | 7031 | if (!(NILP (vertical_type) |
0cc1039f | 7032 | || EQ (vertical_type, Qleft) |
6b61353c KH |
7033 | || EQ (vertical_type, Qright) |
7034 | || EQ (vertical_type, Qt))) | |
7035 | error ("Invalid type of vertical scroll bar"); | |
7036 | ||
949cf20f KS |
7037 | if (!EQ (w->scroll_bar_width, width) |
7038 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
7039 | { | |
7040 | w->scroll_bar_width = width; | |
7041 | w->vertical_scroll_bar_type = vertical_type; | |
7042 | ||
7043 | adjust_window_margins (w); | |
7044 | ||
7045 | clear_glyph_matrix (w->current_matrix); | |
7046 | w->window_end_valid = Qnil; | |
7047 | ||
7048 | ++windows_or_buffers_changed; | |
7049 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
7050 | } | |
7051 | ||
7052 | return Qnil; | |
7053 | } | |
7054 | ||
7055 | ||
7056 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
7057 | 0, 1, 0, | |
7058 | doc: /* Get width and type of scroll bars of window WINDOW. | |
7059 | If WINDOW is omitted or nil, use the currently selected window. | |
6b61353c KH |
7060 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
7061 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
7062 | value. */) | |
949cf20f KS |
7063 | (window) |
7064 | Lisp_Object window; | |
7065 | { | |
7066 | struct window *w = decode_window (window); | |
7067 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
7068 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
7069 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
7070 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
7071 | Fcons (w->vertical_scroll_bar_type, | |
7072 | Fcons (Qnil, Qnil)))); | |
5500c422 GM |
7073 | } |
7074 | ||
7075 | ||
7ab12479 | 7076 | \f |
5500c422 GM |
7077 | /*********************************************************************** |
7078 | Smooth scrolling | |
7079 | ***********************************************************************/ | |
7080 | ||
0cc1039f | 7081 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 PJ |
7082 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
7083 | Use the selected window if WINDOW is nil or omitted. | |
0cc1039f | 7084 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 7085 | optional second arg PIXELS-P means value is measured in pixels. */) |
0cc1039f KS |
7086 | (window, pixels_p) |
7087 | Lisp_Object window, pixels_p; | |
5500c422 | 7088 | { |
47004952 | 7089 | Lisp_Object result; |
5500c422 GM |
7090 | struct frame *f; |
7091 | struct window *w; | |
177c0ea7 | 7092 | |
5500c422 GM |
7093 | if (NILP (window)) |
7094 | window = selected_window; | |
47004952 | 7095 | else |
b7826503 | 7096 | CHECK_WINDOW (window); |
5500c422 GM |
7097 | w = XWINDOW (window); |
7098 | f = XFRAME (w->frame); | |
177c0ea7 | 7099 | |
5500c422 | 7100 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
7101 | result = (NILP (pixels_p) |
7102 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
7103 | : make_number (-w->vscroll)); | |
5500c422 | 7104 | else |
47004952 GM |
7105 | result = make_number (0); |
7106 | return result; | |
5500c422 GM |
7107 | } |
7108 | ||
7109 | ||
7110 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 7111 | 2, 3, 0, |
fdb82f93 | 7112 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
7113 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
7114 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 7115 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
7116 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
7117 | corresponds to an integral number of pixels. The return value is the | |
7118 | result of this rounding. | |
7119 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
0cc1039f KS |
7120 | (window, vscroll, pixels_p) |
7121 | Lisp_Object window, vscroll, pixels_p; | |
5500c422 GM |
7122 | { |
7123 | struct window *w; | |
7124 | struct frame *f; | |
177c0ea7 | 7125 | |
5500c422 GM |
7126 | if (NILP (window)) |
7127 | window = selected_window; | |
47004952 | 7128 | else |
b7826503 PJ |
7129 | CHECK_WINDOW (window); |
7130 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 7131 | |
5500c422 GM |
7132 | w = XWINDOW (window); |
7133 | f = XFRAME (w->frame); | |
7134 | ||
7135 | if (FRAME_WINDOW_P (f)) | |
7136 | { | |
7137 | int old_dy = w->vscroll; | |
177c0ea7 | 7138 | |
0cc1039f KS |
7139 | w->vscroll = - (NILP (pixels_p) |
7140 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
7141 | : XFLOATINT (vscroll)); | |
47004952 | 7142 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 7143 | |
e56263e5 KS |
7144 | if (w->vscroll != old_dy) |
7145 | { | |
7146 | /* Adjust glyph matrix of the frame if the virtual display | |
7147 | area becomes larger than before. */ | |
7148 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
7149 | adjust_glyphs (f); | |
177c0ea7 | 7150 | |
e56263e5 KS |
7151 | /* Prevent redisplay shortcuts. */ |
7152 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
7153 | } | |
5500c422 | 7154 | } |
177c0ea7 | 7155 | |
0cc1039f | 7156 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 7157 | } |
177c0ea7 | 7158 | |
7bbb5782 GM |
7159 | \f |
7160 | /* Call FN for all leaf windows on frame F. FN is called with the | |
7161 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 7162 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 GM |
7163 | |
7164 | void | |
f95464e4 | 7165 | foreach_window (f, fn, user_data) |
7bbb5782 | 7166 | struct frame *f; |
f95464e4 GM |
7167 | int (* fn) P_ ((struct window *, void *)); |
7168 | void *user_data; | |
7bbb5782 | 7169 | { |
76fb556f YM |
7170 | /* Fdelete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
7171 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) | |
7172 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
7173 | } |
7174 | ||
7175 | ||
7176 | /* Helper function for foreach_window. Call FN for all leaf windows | |
7177 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 7178 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 7179 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 7180 | |
67492200 | 7181 | static int |
f95464e4 | 7182 | foreach_window_1 (w, fn, user_data) |
7bbb5782 | 7183 | struct window *w; |
f95464e4 GM |
7184 | int (* fn) P_ ((struct window *, void *)); |
7185 | void *user_data; | |
7bbb5782 | 7186 | { |
67492200 | 7187 | int cont; |
177c0ea7 | 7188 | |
67492200 | 7189 | for (cont = 1; w && cont;) |
7bbb5782 GM |
7190 | { |
7191 | if (!NILP (w->hchild)) | |
f95464e4 | 7192 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 7193 | else if (!NILP (w->vchild)) |
f95464e4 | 7194 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
177c0ea7 | 7195 | else |
0f532a9a | 7196 | cont = fn (w, user_data); |
177c0ea7 | 7197 | |
7bbb5782 GM |
7198 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
7199 | } | |
67492200 GM |
7200 | |
7201 | return cont; | |
7bbb5782 GM |
7202 | } |
7203 | ||
7204 | ||
6d194a45 | 7205 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 7206 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
7207 | the window start. */ |
7208 | ||
67492200 | 7209 | static int |
7bbb5782 GM |
7210 | freeze_window_start (w, freeze_p) |
7211 | struct window *w; | |
f95464e4 | 7212 | void *freeze_p; |
7bbb5782 | 7213 | { |
08c1d235 SM |
7214 | if (MINI_WINDOW_P (w) |
7215 | || (WINDOWP (selected_window) /* Can be nil in corner cases. */ | |
7216 | && (w == XWINDOW (selected_window) | |
7217 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
7218 | && ! NILP (Vminibuf_scroll_window) | |
7219 | && w == XWINDOW (Vminibuf_scroll_window))))) | |
f95464e4 | 7220 | freeze_p = NULL; |
177c0ea7 | 7221 | |
f95464e4 | 7222 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 7223 | return 1; |
7bbb5782 GM |
7224 | } |
7225 | ||
7226 | ||
7227 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
7228 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
7229 | means freeze the window start. */ | |
7230 | ||
7231 | void | |
7232 | freeze_window_starts (f, freeze_p) | |
7233 | struct frame *f; | |
7234 | int freeze_p; | |
7235 | { | |
cbccabec | 7236 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 7237 | } |
5500c422 GM |
7238 | |
7239 | \f | |
7240 | /*********************************************************************** | |
7241 | Initialization | |
7242 | ***********************************************************************/ | |
7243 | ||
cbff28e8 RS |
7244 | /* Return 1 if window configurations C1 and C2 |
7245 | describe the same state of affairs. This is used by Fequal. */ | |
7246 | ||
7247 | int | |
2f8274be | 7248 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 7249 | Lisp_Object c1, c2; |
2f8274be | 7250 | int ignore_positions; |
cbff28e8 RS |
7251 | { |
7252 | register struct save_window_data *d1, *d2; | |
7253 | struct Lisp_Vector *sw1, *sw2; | |
7254 | int i; | |
7255 | ||
663fbbba KS |
7256 | CHECK_WINDOW_CONFIGURATION (c1); |
7257 | CHECK_WINDOW_CONFIGURATION (c2); | |
177c0ea7 | 7258 | |
cbff28e8 RS |
7259 | d1 = (struct save_window_data *) XVECTOR (c1); |
7260 | d2 = (struct save_window_data *) XVECTOR (c2); | |
7261 | sw1 = XVECTOR (d1->saved_windows); | |
7262 | sw2 = XVECTOR (d2->saved_windows); | |
7263 | ||
b05b4e27 | 7264 | if (d1->frame_cols != d2->frame_cols) |
cbff28e8 | 7265 | return 0; |
b05b4e27 | 7266 | if (d1->frame_lines != d2->frame_lines) |
cbff28e8 | 7267 | return 0; |
b05b4e27 | 7268 | if (d1->frame_menu_bar_lines != d2->frame_menu_bar_lines) |
cbff28e8 RS |
7269 | return 0; |
7270 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
7271 | return 0; | |
7272 | /* Don't compare the current_window field directly. | |
7273 | Instead see w1_is_current and w2_is_current, below. */ | |
7274 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
7275 | return 0; | |
2f8274be | 7276 | if (! ignore_positions) |
3f49fddc KS |
7277 | { |
7278 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
7279 | return 0; | |
7280 | if (! EQ (d1->minibuf_selected_window, d2->minibuf_selected_window)) | |
7281 | return 0; | |
7282 | } | |
cbff28e8 RS |
7283 | /* Don't compare the root_window field. |
7284 | We don't require the two configurations | |
7285 | to use the same window object, | |
7286 | and the two root windows must be equivalent | |
7287 | if everything else compares equal. */ | |
7288 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
7289 | return 0; | |
b05b4e27 | 7290 | if (d1->min_width != d2->min_width) |
cbff28e8 | 7291 | return 0; |
b05b4e27 | 7292 | if (d1->min_height != d2->min_height) |
cbff28e8 RS |
7293 | return 0; |
7294 | ||
7295 | /* Verify that the two confis have the same number of windows. */ | |
7296 | if (sw1->size != sw2->size) | |
7297 | return 0; | |
7298 | ||
7299 | for (i = 0; i < sw1->size; i++) | |
7300 | { | |
7301 | struct saved_window *p1, *p2; | |
7302 | int w1_is_current, w2_is_current; | |
7303 | ||
7304 | p1 = SAVED_WINDOW_N (sw1, i); | |
7305 | p2 = SAVED_WINDOW_N (sw2, i); | |
7306 | ||
7307 | /* Verify that the current windows in the two | |
7308 | configurations correspond to each other. */ | |
7309 | w1_is_current = EQ (d1->current_window, p1->window); | |
7310 | w2_is_current = EQ (d2->current_window, p2->window); | |
7311 | ||
7312 | if (w1_is_current != w2_is_current) | |
7313 | return 0; | |
7314 | ||
7315 | /* Verify that the corresponding windows do match. */ | |
7316 | if (! EQ (p1->buffer, p2->buffer)) | |
7317 | return 0; | |
949cf20f | 7318 | if (! EQ (p1->left_col, p2->left_col)) |
cbff28e8 | 7319 | return 0; |
949cf20f | 7320 | if (! EQ (p1->top_line, p2->top_line)) |
cbff28e8 | 7321 | return 0; |
949cf20f | 7322 | if (! EQ (p1->total_cols, p2->total_cols)) |
cbff28e8 | 7323 | return 0; |
949cf20f | 7324 | if (! EQ (p1->total_lines, p2->total_lines)) |
cbff28e8 | 7325 | return 0; |
cbff28e8 RS |
7326 | if (! EQ (p1->display_table, p2->display_table)) |
7327 | return 0; | |
7328 | if (! EQ (p1->parent, p2->parent)) | |
7329 | return 0; | |
7330 | if (! EQ (p1->prev, p2->prev)) | |
7331 | return 0; | |
2f8274be RS |
7332 | if (! ignore_positions) |
7333 | { | |
7334 | if (! EQ (p1->hscroll, p2->hscroll)) | |
7335 | return 0; | |
ea68264b GM |
7336 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
7337 | return 0; | |
2f8274be RS |
7338 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
7339 | return 0; | |
7340 | if (NILP (Fequal (p1->start, p2->start))) | |
7341 | return 0; | |
7342 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
7343 | return 0; | |
7344 | if (NILP (Fequal (p1->mark, p2->mark))) | |
7345 | return 0; | |
7346 | } | |
949cf20f KS |
7347 | if (! EQ (p1->left_margin_cols, p2->left_margin_cols)) |
7348 | return 0; | |
7349 | if (! EQ (p1->right_margin_cols, p2->right_margin_cols)) | |
7350 | return 0; | |
7351 | if (! EQ (p1->left_fringe_width, p2->left_fringe_width)) | |
7352 | return 0; | |
7353 | if (! EQ (p1->right_fringe_width, p2->right_fringe_width)) | |
7354 | return 0; | |
7355 | if (! EQ (p1->fringes_outside_margins, p2->fringes_outside_margins)) | |
7356 | return 0; | |
7357 | if (! EQ (p1->scroll_bar_width, p2->scroll_bar_width)) | |
7358 | return 0; | |
7359 | if (! EQ (p1->vertical_scroll_bar_type, p2->vertical_scroll_bar_type)) | |
7360 | return 0; | |
cbff28e8 RS |
7361 | } |
7362 | ||
7363 | return 1; | |
7364 | } | |
2f8274be RS |
7365 | |
7366 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
7367 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
7368 | doc: /* Compare two window configurations as regards the structure of windows. |
7369 | This function ignores details such as the values of point and mark | |
7370 | and scrolling positions. */) | |
7371 | (x, y) | |
2f8274be RS |
7372 | Lisp_Object x, y; |
7373 | { | |
7374 | if (compare_window_configurations (x, y, 1)) | |
7375 | return Qt; | |
7376 | return Qnil; | |
7377 | } | |
cbff28e8 | 7378 | \f |
dfcf069d | 7379 | void |
7ab12479 JB |
7380 | init_window_once () |
7381 | { | |
3224dac1 | 7382 | struct frame *f = make_initial_frame (); |
1ae1a37d GM |
7383 | XSETFRAME (selected_frame, f); |
7384 | Vterminal_frame = selected_frame; | |
7385 | minibuf_window = f->minibuffer_window; | |
7386 | selected_window = f->selected_window; | |
7387 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
7388 | |
7389 | window_initialized = 1; | |
7ab12479 JB |
7390 | } |
7391 | ||
67492200 GM |
7392 | void |
7393 | init_window () | |
7394 | { | |
7395 | Vwindow_list = Qnil; | |
7396 | } | |
7397 | ||
dfcf069d | 7398 | void |
7ab12479 JB |
7399 | syms_of_window () |
7400 | { | |
c525d842 CY |
7401 | Qscroll_up = intern ("scroll-up"); |
7402 | staticpro (&Qscroll_up); | |
7403 | ||
7404 | Qscroll_down = intern ("scroll-down"); | |
7405 | staticpro (&Qscroll_down); | |
7406 | ||
8a37516b GM |
7407 | Qwindow_size_fixed = intern ("window-size-fixed"); |
7408 | staticpro (&Qwindow_size_fixed); | |
c0e7ccd3 | 7409 | Fset (Qwindow_size_fixed, Qnil); |
177c0ea7 | 7410 | |
543f5fb1 RS |
7411 | staticpro (&Qwindow_configuration_change_hook); |
7412 | Qwindow_configuration_change_hook | |
7413 | = intern ("window-configuration-change-hook"); | |
7414 | ||
7ab12479 JB |
7415 | Qwindowp = intern ("windowp"); |
7416 | staticpro (&Qwindowp); | |
7417 | ||
3f8ab7bd RS |
7418 | Qwindow_configuration_p = intern ("window-configuration-p"); |
7419 | staticpro (&Qwindow_configuration_p); | |
7420 | ||
806b4d9b JB |
7421 | Qwindow_live_p = intern ("window-live-p"); |
7422 | staticpro (&Qwindow_live_p); | |
605be8af | 7423 | |
2cccc823 | 7424 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
7425 | staticpro (&Qtemp_buffer_show_hook); |
7426 | ||
67492200 | 7427 | staticpro (&Vwindow_list); |
8bfb170b KS |
7428 | |
7429 | minibuf_selected_window = Qnil; | |
3dbab091 | 7430 | staticpro (&minibuf_selected_window); |
67492200 | 7431 | |
66fe93d1 | 7432 | window_scroll_pixel_based_preserve_y = -1; |
66d43aea | 7433 | |
7ab12479 | 7434 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
fdb82f93 PJ |
7435 | doc: /* Non-nil means call as function to display a help buffer. |
7436 | The function is called with one argument, the buffer to be displayed. | |
7437 | Used by `with-output-to-temp-buffer'. | |
7438 | If this function is used, then it must do the entire job of showing | |
7439 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
7440 | Vtemp_buffer_show_function = Qnil; |
7441 | ||
7442 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
fdb82f93 PJ |
7443 | doc: /* If non-nil, function to call to handle `display-buffer'. |
7444 | It will receive two args, the buffer and a flag which if non-nil means | |
c2755926 LT |
7445 | that the currently selected window is not acceptable. |
7446 | It should choose or create a window, display the specified buffer in it, | |
7447 | and return the window. | |
fdb82f93 PJ |
7448 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window' |
7449 | work using this function. */); | |
7ab12479 JB |
7450 | Vdisplay_buffer_function = Qnil; |
7451 | ||
6529ed87 | 7452 | DEFVAR_LISP ("even-window-heights", &Veven_window_heights, |
fdb82f93 PJ |
7453 | doc: /* *If non-nil, `display-buffer' should even the window heights. |
7454 | If nil, `display-buffer' will leave the window configuration alone. */); | |
6529ed87 GM |
7455 | Veven_window_heights = Qt; |
7456 | ||
7ab12479 | 7457 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
fdb82f93 | 7458 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
7459 | Vminibuf_scroll_window = Qnil; |
7460 | ||
cc91894c | 7461 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows, |
26124d5e | 7462 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
7463 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
7464 | is displayed in the `mode-line' face. */); | |
7465 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 7466 | |
7ab12479 | 7467 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, |
fdb82f93 | 7468 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
7469 | Vother_window_scroll_buffer = Qnil; |
7470 | ||
44fa5b1e | 7471 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
fdb82f93 | 7472 | doc: /* *Non-nil means `display-buffer' should make a separate frame. */); |
44fa5b1e | 7473 | pop_up_frames = 0; |
7ab12479 | 7474 | |
e56263e5 KS |
7475 | DEFVAR_BOOL ("auto-window-vscroll", &auto_window_vscroll_p, |
7476 | doc: /* *Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); | |
7477 | auto_window_vscroll_p = 1; | |
7478 | ||
9c3da604 | 7479 | DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames, |
fdb82f93 PJ |
7480 | doc: /* *Non-nil means `display-buffer' should reuse frames. |
7481 | If the buffer in question is already displayed in a frame, raise that frame. */); | |
9c3da604 GM |
7482 | display_buffer_reuse_frames = 0; |
7483 | ||
44fa5b1e | 7484 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
fdb82f93 PJ |
7485 | doc: /* Function to call to handle automatic new frame creation. |
7486 | It is called with no arguments and should return a newly created frame. | |
7487 | ||
7488 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))' | |
7489 | where `pop-up-frame-alist' would hold the default frame parameters. */); | |
44fa5b1e | 7490 | Vpop_up_frame_function = Qnil; |
7ab12479 | 7491 | |
a90712c2 | 7492 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
fdb82f93 | 7493 | doc: /* *List of buffer names that should have their own special frames. |
c019856e RS |
7494 | Displaying a buffer with `display-buffer' or `pop-to-buffer', |
7495 | if its name is in this list, makes a special frame for it | |
fdb82f93 PJ |
7496 | using `special-display-function'. See also `special-display-regexps'. |
7497 | ||
7498 | An element of the list can be a list instead of just a string. | |
7499 | There are two ways to use a list as an element: | |
7500 | (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...) | |
3cb7143c RS |
7501 | In the first case, the FRAME-PARAMETERS are pairs of the form |
7502 | \(PARAMETER . VALUE); these parameter values are used to create the frame. | |
7503 | In the second case, FUNCTION is called with BUFFER as the first argument, | |
7504 | followed by the OTHER-ARGS--it can display BUFFER in any way it likes. | |
fdb82f93 PJ |
7505 | All this is done by the function found in `special-display-function'. |
7506 | ||
6b61353c KH |
7507 | If the specified frame parameters include (same-buffer . t), the |
7508 | buffer is displayed in the currently selected window. Otherwise, if | |
7509 | they include (same-frame . t), the buffer is displayed in a new window | |
7510 | in the currently selected frame. | |
7511 | ||
fdb82f93 PJ |
7512 | If this variable appears \"not to work\", because you add a name to it |
7513 | but that buffer still appears in the selected window, look at the | |
7514 | values of `same-window-buffer-names' and `same-window-regexps'. | |
7515 | Those variables take precedence over this one. */); | |
a90712c2 RS |
7516 | Vspecial_display_buffer_names = Qnil; |
7517 | ||
7518 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
fdb82f93 | 7519 | doc: /* *List of regexps saying which buffers should have their own special frames. |
c019856e RS |
7520 | When displaying a buffer with `display-buffer' or `pop-to-buffer', |
7521 | if any regexp in this list matches the buffer name, it makes a | |
7522 | special frame for the buffer by calling `special-display-function'. | |
fdb82f93 PJ |
7523 | |
7524 | An element of the list can be a list instead of just a string. | |
7525 | There are two ways to use a list as an element: | |
7526 | (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...) | |
3cb7143c RS |
7527 | In the first case, the FRAME-PARAMETERS are pairs of the form |
7528 | \(PARAMETER . VALUE); these parameter values are used to create the frame. | |
7529 | In the second case, FUNCTION is called with BUFFER as the first argument, | |
7530 | followed by the OTHER-ARGS--it can display the buffer in any way it likes. | |
fdb82f93 PJ |
7531 | All this is done by the function found in `special-display-function'. |
7532 | ||
6b61353c KH |
7533 | If the specified frame parameters include (same-buffer . t), the |
7534 | buffer is displayed in the currently selected window. Otherwise, if | |
7535 | they include (same-frame . t), the buffer is displayed in a new window | |
7536 | in the currently selected frame. | |
7537 | ||
fdb82f93 PJ |
7538 | If this variable appears \"not to work\", because you add a regexp to it |
7539 | but the matching buffers still appear in the selected window, look at the | |
7540 | values of `same-window-buffer-names' and `same-window-regexps'. | |
7541 | Those variables take precedence over this one. */); | |
a90712c2 RS |
7542 | Vspecial_display_regexps = Qnil; |
7543 | ||
7544 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
fdb82f93 PJ |
7545 | doc: /* Function to call to make a new frame for a special buffer. |
7546 | It is called with two arguments, the buffer and optional buffer specific | |
7547 | data, and should return a window displaying that buffer. | |
a5731348 SM |
7548 | The default value normally makes a separate frame for the buffer, |
7549 | using `special-display-frame-alist' to specify the frame parameters. | |
7550 | But if the buffer specific data includes (same-buffer . t) then the | |
7551 | buffer is displayed in the current selected window. | |
7552 | Otherwise if it includes (same-frame . t) then the buffer is displayed in | |
7553 | a new window in the currently selected frame. | |
7554 | ||
7555 | A buffer is special if it is listed in `special-display-buffer-names' | |
fdb82f93 | 7556 | or matches a regexp in `special-display-regexps'. */); |
a90712c2 RS |
7557 | Vspecial_display_function = Qnil; |
7558 | ||
855d8627 | 7559 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
fdb82f93 PJ |
7560 | doc: /* *List of buffer names that should appear in the selected window. |
7561 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer' | |
7562 | switches to it in the selected window, rather than making it appear | |
7563 | in some other window. | |
7564 | ||
7565 | An element of the list can be a cons cell instead of just a string. | |
7566 | Then the car must be a string, which specifies the buffer name. | |
7567 | This is for compatibility with `special-display-buffer-names'; | |
7568 | the cdr of the cons cell is ignored. | |
7569 | ||
7570 | See also `same-window-regexps'. */); | |
855d8627 RS |
7571 | Vsame_window_buffer_names = Qnil; |
7572 | ||
7573 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
fdb82f93 PJ |
7574 | doc: /* *List of regexps saying which buffers should appear in the selected window. |
7575 | If a buffer name matches one of these regexps, then displaying it | |
7576 | using `display-buffer' or `pop-to-buffer' switches to it | |
7577 | in the selected window, rather than making it appear in some other window. | |
7578 | ||
7579 | An element of the list can be a cons cell instead of just a string. | |
7580 | Then the car must be a string, which specifies the buffer name. | |
7581 | This is for compatibility with `special-display-buffer-names'; | |
7582 | the cdr of the cons cell is ignored. | |
7583 | ||
7584 | See also `same-window-buffer-names'. */); | |
855d8627 RS |
7585 | Vsame_window_regexps = Qnil; |
7586 | ||
7ab12479 | 7587 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
fdb82f93 | 7588 | doc: /* *Non-nil means display-buffer should make new windows. */); |
7ab12479 JB |
7589 | pop_up_windows = 1; |
7590 | ||
7591 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
fdb82f93 | 7592 | doc: /* *Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
7593 | next_screen_context_lines = 2; |
7594 | ||
7595 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
bdbae5b8 EZ |
7596 | doc: /* *A window must be at least this tall to be eligible for splitting |
7597 | by `display-buffer'. The value is in line units. | |
fdb82f93 | 7598 | If there is only one window, it is split regardless of this value. */); |
7ab12479 JB |
7599 | split_height_threshold = 500; |
7600 | ||
90ab5c62 SM |
7601 | DEFVAR_LISP ("split-window-preferred-function", |
7602 | &Vsplit_window_preferred_function, | |
7603 | doc: /* Function to use to split a window. | |
7604 | This is used by `display-buffer' to allow the user to choose whether | |
7605 | to split windows horizontally or vertically or some mix of the two. | |
7ae6d1d1 JL |
7606 | When this variable is nil, `display-buffer' splits windows vertically. |
7607 | Otherwise, `display-buffer' calls this function to split a window. | |
90ab5c62 | 7608 | It is called with a window as single argument and should split it in two |
7ae6d1d1 JL |
7609 | and return the new window, or return an appropriate existing window |
7610 | if splitting is not eligible. */); | |
7611 | Vsplit_window_preferred_function = Qnil; | |
90ab5c62 | 7612 | |
7ab12479 | 7613 | DEFVAR_INT ("window-min-height", &window_min_height, |
bdbae5b8 EZ |
7614 | doc: /* *Delete any window less than this tall (including its mode line). |
7615 | The value is in line units. */); | |
7ab12479 JB |
7616 | window_min_height = 4; |
7617 | ||
7618 | DEFVAR_INT ("window-min-width", &window_min_width, | |
bdbae5b8 | 7619 | doc: /* *Delete any window less than this wide (measured in characters). */); |
7ab12479 JB |
7620 | window_min_width = 10; |
7621 | ||
5500c422 GM |
7622 | DEFVAR_LISP ("scroll-preserve-screen-position", |
7623 | &Vscroll_preserve_screen_position, | |
bdf4ec93 RS |
7624 | doc: /* *Controls if scroll commands move point to keep its screen line unchanged. |
7625 | A value of nil means point does not keep its screen position except | |
7626 | at the scroll margin or window boundary respectively. | |
7627 | A value of t means point keeps its screen position if the scroll | |
7628 | command moved it vertically out of the window, e.g. when scrolling | |
7629 | by full screens. | |
7630 | Any other value means point always keeps its screen position. */); | |
5500c422 | 7631 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 7632 | |
543f5fb1 RS |
7633 | DEFVAR_LISP ("window-configuration-change-hook", |
7634 | &Vwindow_configuration_change_hook, | |
fdb82f93 | 7635 | doc: /* Functions to call when window configuration changes. |
6a44ffb3 SM |
7636 | The buffer-local part is run once per window, with the relevant window |
7637 | selected; while the global part is run only once for the modified frame, | |
7638 | with the relevant frame selected. */); | |
543f5fb1 RS |
7639 | Vwindow_configuration_change_hook = Qnil; |
7640 | ||
7ab12479 JB |
7641 | defsubr (&Sselected_window); |
7642 | defsubr (&Sminibuffer_window); | |
7643 | defsubr (&Swindow_minibuffer_p); | |
7644 | defsubr (&Swindowp); | |
806b4d9b | 7645 | defsubr (&Swindow_live_p); |
7ab12479 | 7646 | defsubr (&Spos_visible_in_window_p); |
536833ab | 7647 | defsubr (&Swindow_line_height); |
7ab12479 JB |
7648 | defsubr (&Swindow_buffer); |
7649 | defsubr (&Swindow_height); | |
7650 | defsubr (&Swindow_width); | |
35ea56c9 | 7651 | defsubr (&Swindow_full_width_p); |
7ab12479 JB |
7652 | defsubr (&Swindow_hscroll); |
7653 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
7654 | defsubr (&Swindow_redisplay_end_trigger); |
7655 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 7656 | defsubr (&Swindow_edges); |
c99a9eb3 RS |
7657 | defsubr (&Swindow_pixel_edges); |
7658 | defsubr (&Swindow_inside_edges); | |
7659 | defsubr (&Swindow_inside_pixel_edges); | |
d5783c40 JB |
7660 | defsubr (&Scoordinates_in_window_p); |
7661 | defsubr (&Swindow_at); | |
7ab12479 JB |
7662 | defsubr (&Swindow_point); |
7663 | defsubr (&Swindow_start); | |
7664 | defsubr (&Swindow_end); | |
7665 | defsubr (&Sset_window_point); | |
7666 | defsubr (&Sset_window_start); | |
7667 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 7668 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
7669 | defsubr (&Swindow_display_table); |
7670 | defsubr (&Sset_window_display_table); | |
7671 | defsubr (&Snext_window); | |
7672 | defsubr (&Sprevious_window); | |
7673 | defsubr (&Sother_window); | |
7674 | defsubr (&Sget_lru_window); | |
7675 | defsubr (&Sget_largest_window); | |
7676 | defsubr (&Sget_buffer_window); | |
7677 | defsubr (&Sdelete_other_windows); | |
7678 | defsubr (&Sdelete_windows_on); | |
7679 | defsubr (&Sreplace_buffer_in_windows); | |
7680 | defsubr (&Sdelete_window); | |
7681 | defsubr (&Sset_window_buffer); | |
7682 | defsubr (&Sselect_window); | |
4628f7a4 EN |
7683 | defsubr (&Sspecial_display_p); |
7684 | defsubr (&Ssame_window_p); | |
7ab12479 | 7685 | defsubr (&Sdisplay_buffer); |
6b61353c | 7686 | defsubr (&Sforce_window_update); |
7ab12479 JB |
7687 | defsubr (&Ssplit_window); |
7688 | defsubr (&Senlarge_window); | |
7689 | defsubr (&Sshrink_window); | |
0d384044 | 7690 | defsubr (&Sadjust_window_trailing_edge); |
7ab12479 JB |
7691 | defsubr (&Sscroll_up); |
7692 | defsubr (&Sscroll_down); | |
7693 | defsubr (&Sscroll_left); | |
7694 | defsubr (&Sscroll_right); | |
ccd0664b | 7695 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 7696 | defsubr (&Sscroll_other_window); |
fa832261 | 7697 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 7698 | defsubr (&Srecenter); |
81fe0836 | 7699 | defsubr (&Swindow_text_height); |
7ab12479 JB |
7700 | defsubr (&Smove_to_window_line); |
7701 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 7702 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
7703 | defsubr (&Sset_window_configuration); |
7704 | defsubr (&Scurrent_window_configuration); | |
7705 | defsubr (&Ssave_window_excursion); | |
c16e1cc3 | 7706 | defsubr (&Swindow_tree); |
5500c422 GM |
7707 | defsubr (&Sset_window_margins); |
7708 | defsubr (&Swindow_margins); | |
949cf20f KS |
7709 | defsubr (&Sset_window_fringes); |
7710 | defsubr (&Swindow_fringes); | |
7711 | defsubr (&Sset_window_scroll_bars); | |
7712 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
7713 | defsubr (&Swindow_vscroll); |
7714 | defsubr (&Sset_window_vscroll); | |
2f8274be | 7715 | defsubr (&Scompare_window_configurations); |
67492200 | 7716 | defsubr (&Swindow_list); |
7ab12479 JB |
7717 | } |
7718 | ||
dfcf069d | 7719 | void |
7ab12479 JB |
7720 | keys_of_window () |
7721 | { | |
7722 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
7723 | initial_define_key (control_x_map, '2', "split-window"); | |
7724 | initial_define_key (control_x_map, '0', "delete-window"); | |
7725 | initial_define_key (control_x_map, 'o', "other-window"); | |
7726 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
7727 | initial_define_key (control_x_map, '<', "scroll-left"); | |
7728 | initial_define_key (control_x_map, '>', "scroll-right"); | |
7729 | ||
7730 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
7731 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
7732 | initial_define_key (meta_map, 'v', "scroll-down"); | |
7733 | ||
7734 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
7735 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
7736 | } | |
6b61353c KH |
7737 | |
7738 | /* arch-tag: 90a9c576-0590-48f1-a5f1-6c96a0452d9f | |
2c2cd782 | 7739 | (do not change this comment) */ |