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, |
4e6835db | 4 | 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc. |
7ab12479 JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
8 | GNU Emacs is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
684d6f5b | 10 | the Free Software Foundation; either version 3, or (at your option) |
7ab12479 JB |
11 | any later version. |
12 | ||
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
20 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
7ab12479 | 22 | |
18160b98 | 23 | #include <config.h> |
4d553a13 KL |
24 | #include <stdio.h> |
25 | ||
7ab12479 JB |
26 | #include "lisp.h" |
27 | #include "buffer.h" | |
3e4731a3 | 28 | #include "keyboard.h" |
e35f6ff7 | 29 | #include "keymap.h" |
44fa5b1e | 30 | #include "frame.h" |
7ab12479 JB |
31 | #include "window.h" |
32 | #include "commands.h" | |
33 | #include "indent.h" | |
34 | #include "termchar.h" | |
35 | #include "disptab.h" | |
dfcf069d | 36 | #include "dispextern.h" |
5500c422 GM |
37 | #include "blockinput.h" |
38 | #include "intervals.h" | |
de509a60 | 39 | #include "termhooks.h" /* For FRAME_TERMINAL. */ |
5500c422 | 40 | |
6d55d620 | 41 | #ifdef HAVE_X_WINDOWS |
dfcf069d | 42 | #include "xterm.h" |
5500c422 | 43 | #endif /* HAVE_X_WINDOWS */ |
8f23f280 AI |
44 | #ifdef WINDOWSNT |
45 | #include "w32term.h" | |
46 | #endif | |
1e3c8885 EZ |
47 | #ifdef MSDOS |
48 | #include "msdos.h" | |
49 | #endif | |
e0f712ba | 50 | #ifdef MAC_OS |
1a578e9b AC |
51 | #include "macterm.h" |
52 | #endif | |
5500c422 | 53 | |
5500c422 | 54 | |
3f8ab7bd | 55 | Lisp_Object Qwindowp, Qwindow_live_p, Qwindow_configuration_p; |
c525d842 | 56 | Lisp_Object Qscroll_up, Qscroll_down; |
90647b07 | 57 | Lisp_Object Qwindow_size_fixed; |
49b996e7 | 58 | extern Lisp_Object Qleft_margin, Qright_margin; |
7ab12479 | 59 | |
521b203e | 60 | static int displayed_window_lines P_ ((struct window *)); |
5e14b1fc | 61 | static struct window *decode_window P_ ((Lisp_Object)); |
5500c422 GM |
62 | static int count_windows P_ ((struct window *)); |
63 | static int get_leaf_windows P_ ((struct window *, struct window **, int)); | |
64 | static void window_scroll P_ ((Lisp_Object, int, int, int)); | |
65 | static void window_scroll_pixel_based P_ ((Lisp_Object, int, int, int)); | |
66 | static void window_scroll_line_based P_ ((Lisp_Object, int, int, int)); | |
233a4a2c | 67 | static int window_min_size_1 P_ ((struct window *, int)); |
f1de8c77 | 68 | static int window_min_size_2 P_ ((struct window *, int)); |
f984d4fc | 69 | static int window_min_size P_ ((struct window *, int, int, int *)); |
5fe0b054 | 70 | static void size_window P_ ((Lisp_Object, int, int, int, int, int)); |
f95464e4 | 71 | static int freeze_window_start P_ ((struct window *, void *)); |
f984d4fc | 72 | static int window_fixed_size_p P_ ((struct window *, int, int)); |
56ebfae2 | 73 | static void enlarge_window P_ ((Lisp_Object, int, int)); |
67492200 | 74 | static Lisp_Object window_list P_ ((void)); |
f95464e4 | 75 | static int add_window_to_list P_ ((struct window *, void *)); |
118ea242 GM |
76 | static int candidate_window_p P_ ((Lisp_Object, Lisp_Object, Lisp_Object, |
77 | Lisp_Object)); | |
67492200 GM |
78 | static Lisp_Object next_window P_ ((Lisp_Object, Lisp_Object, |
79 | Lisp_Object, int)); | |
80 | static void decode_next_window_args P_ ((Lisp_Object *, Lisp_Object *, | |
81 | Lisp_Object *)); | |
f95464e4 GM |
82 | static int foreach_window_1 P_ ((struct window *, |
83 | int (* fn) (struct window *, void *), | |
84 | void *)); | |
cd2904bd | 85 | static Lisp_Object window_list_1 P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); |
b7354ddf | 86 | |
7ab12479 JB |
87 | /* This is the window in which the terminal's cursor should |
88 | be left when nothing is being done with it. This must | |
89 | always be a leaf window, and its buffer is selected by | |
90 | the top level editing loop at the end of each command. | |
91 | ||
92 | This value is always the same as | |
44fa5b1e | 93 | FRAME_SELECTED_WINDOW (selected_frame). */ |
7ab12479 JB |
94 | |
95 | Lisp_Object selected_window; | |
96 | ||
67492200 GM |
97 | /* A list of all windows for use by next_window and Fwindow_list. |
98 | Functions creating or deleting windows should invalidate this cache | |
99 | by setting it to nil. */ | |
100 | ||
101 | Lisp_Object Vwindow_list; | |
102 | ||
5500c422 GM |
103 | /* The mini-buffer window of the selected frame. |
104 | Note that you cannot test for mini-bufferness of an arbitrary window | |
105 | by comparing against this; but you can test for mini-bufferness of | |
7ab12479 | 106 | the selected window. */ |
5500c422 | 107 | |
7ab12479 JB |
108 | Lisp_Object minibuf_window; |
109 | ||
3f49fddc KS |
110 | /* Non-nil means it is the window whose mode line should be |
111 | shown as the selected window when the minibuffer is selected. */ | |
112 | ||
3dbab091 | 113 | Lisp_Object minibuf_selected_window; |
3f49fddc | 114 | |
7ab12479 | 115 | /* Non-nil means it is the window for C-M-v to scroll |
5500c422 GM |
116 | when the mini-buffer is selected. */ |
117 | ||
7ab12479 JB |
118 | Lisp_Object Vminibuf_scroll_window; |
119 | ||
120 | /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
5500c422 | 121 | |
7ab12479 JB |
122 | Lisp_Object Vother_window_scroll_buffer; |
123 | ||
7ab12479 | 124 | /* Non-nil means it's function to call to display temp buffers. */ |
5500c422 | 125 | |
7ab12479 JB |
126 | Lisp_Object Vtemp_buffer_show_function; |
127 | ||
e56263e5 KS |
128 | /* Non-zero means line and page scrolling on tall lines (with images) |
129 | does partial scrolling by modifying window-vscroll. */ | |
130 | ||
131 | int auto_window_vscroll_p; | |
132 | ||
cc91894c KS |
133 | /* Non-zero means to use mode-line-inactive face in all windows but the |
134 | selected-window and the minibuffer-scroll-window when the | |
135 | minibuffer is active. */ | |
136 | int mode_line_in_non_selected_windows; | |
26124d5e | 137 | |
7ab12479 | 138 | /* If a window gets smaller than either of these, it is removed. */ |
5500c422 | 139 | |
31ade731 SM |
140 | EMACS_INT window_min_height; |
141 | EMACS_INT window_min_width; | |
7ab12479 JB |
142 | |
143 | /* Nonzero implies Fdisplay_buffer should create windows. */ | |
5500c422 | 144 | |
7ab12479 JB |
145 | int pop_up_windows; |
146 | ||
44fa5b1e | 147 | /* Nonzero implies make new frames for Fdisplay_buffer. */ |
5500c422 | 148 | |
44fa5b1e | 149 | int pop_up_frames; |
7ab12479 | 150 | |
9c3da604 GM |
151 | /* Nonzero means reuse existing frames for displaying buffers. */ |
152 | ||
153 | int display_buffer_reuse_frames; | |
154 | ||
7ab12479 | 155 | /* Non-nil means use this function instead of default */ |
5500c422 | 156 | |
44fa5b1e | 157 | Lisp_Object Vpop_up_frame_function; |
7ab12479 JB |
158 | |
159 | /* Function to call to handle Fdisplay_buffer. */ | |
5500c422 | 160 | |
7ab12479 JB |
161 | Lisp_Object Vdisplay_buffer_function; |
162 | ||
6529ed87 GM |
163 | /* Non-nil means that Fdisplay_buffer should even the heights of windows. */ |
164 | ||
165 | Lisp_Object Veven_window_heights; | |
166 | ||
a90712c2 | 167 | /* List of buffer *names* for buffers that should have their own frames. */ |
5500c422 | 168 | |
a90712c2 RS |
169 | Lisp_Object Vspecial_display_buffer_names; |
170 | ||
171 | /* List of regexps for buffer names that should have their own frames. */ | |
5500c422 | 172 | |
a90712c2 RS |
173 | Lisp_Object Vspecial_display_regexps; |
174 | ||
175 | /* Function to pop up a special frame. */ | |
5500c422 | 176 | |
a90712c2 RS |
177 | Lisp_Object Vspecial_display_function; |
178 | ||
855d8627 | 179 | /* List of buffer *names* for buffers to appear in selected window. */ |
5500c422 | 180 | |
855d8627 RS |
181 | Lisp_Object Vsame_window_buffer_names; |
182 | ||
183 | /* List of regexps for buffer names to appear in selected window. */ | |
5500c422 | 184 | |
855d8627 RS |
185 | Lisp_Object Vsame_window_regexps; |
186 | ||
a58ec57d | 187 | /* Hook run at end of temp_output_buffer_show. */ |
5500c422 | 188 | |
a58ec57d RS |
189 | Lisp_Object Qtemp_buffer_show_hook; |
190 | ||
37962e60 | 191 | /* Fdisplay_buffer always splits the largest window |
7ab12479 | 192 | if that window is more than this high. */ |
5500c422 | 193 | |
31ade731 | 194 | EMACS_INT split_height_threshold; |
7ab12479 | 195 | |
90ab5c62 SM |
196 | /* How to split windows (horizontally/vertically/hybrid). */ |
197 | ||
198 | Lisp_Object Vsplit_window_preferred_function; | |
199 | ||
7ab12479 | 200 | /* Number of lines of continuity in scrolling by screenfuls. */ |
5500c422 | 201 | |
31ade731 | 202 | EMACS_INT next_screen_context_lines; |
7ab12479 JB |
203 | |
204 | /* Incremented for each window created. */ | |
5500c422 | 205 | |
7ab12479 JB |
206 | static int sequence_number; |
207 | ||
5b03d3c0 | 208 | /* Nonzero after init_window_once has finished. */ |
5500c422 | 209 | |
5b03d3c0 RS |
210 | static int window_initialized; |
211 | ||
543f5fb1 | 212 | /* Hook to run when window config changes. */ |
5500c422 | 213 | |
543f5fb1 RS |
214 | Lisp_Object Qwindow_configuration_change_hook; |
215 | Lisp_Object Vwindow_configuration_change_hook; | |
216 | ||
d0c38d63 | 217 | /* Non-nil means scroll commands try to put point |
9317a85d | 218 | at the same screen height as previously. */ |
9317a85d | 219 | |
5500c422 GM |
220 | Lisp_Object Vscroll_preserve_screen_position; |
221 | ||
0d384044 RS |
222 | /* Incremented by 1 whenever a window is deleted. */ |
223 | ||
224 | int window_deletion_count; | |
225 | ||
66d43aea LT |
226 | /* Used by the function window_scroll_pixel_based */ |
227 | ||
66fe93d1 | 228 | static int window_scroll_pixel_based_preserve_y; |
66d43aea | 229 | |
5500c422 | 230 | #if 0 /* This isn't used anywhere. */ |
91a78190 | 231 | /* Nonzero means we can split a frame even if it is "unsplittable". */ |
eddd51c2 | 232 | static int inhibit_frame_unsplittable; |
5500c422 | 233 | #endif /* 0 */ |
7d601aaa | 234 | |
31ade731 | 235 | extern EMACS_INT scroll_margin; |
9317a85d | 236 | |
dba06815 | 237 | extern Lisp_Object Qwindow_scroll_functions, Vwindow_scroll_functions; |
7ab12479 JB |
238 | \f |
239 | DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0, | |
fdb82f93 PJ |
240 | doc: /* Returns t if OBJECT is a window. */) |
241 | (object) | |
413430c5 | 242 | Lisp_Object object; |
7ab12479 | 243 | { |
413430c5 | 244 | return WINDOWP (object) ? Qt : Qnil; |
7ab12479 JB |
245 | } |
246 | ||
806b4d9b | 247 | DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0, |
fdb82f93 | 248 | doc: /* Returns t if OBJECT is a window which is currently visible. */) |
413430c5 EN |
249 | (object) |
250 | Lisp_Object object; | |
605be8af | 251 | { |
9e571f49 | 252 | return WINDOW_LIVE_P (object) ? Qt : Qnil; |
605be8af JB |
253 | } |
254 | ||
7ab12479 JB |
255 | Lisp_Object |
256 | make_window () | |
257 | { | |
cffec418 | 258 | Lisp_Object val; |
7ab12479 | 259 | register struct window *p; |
cffec418 | 260 | |
26605be9 | 261 | p = allocate_window (); |
2a1893f4 SM |
262 | ++sequence_number; |
263 | XSETFASTINT (p->sequence_number, sequence_number); | |
949cf20f KS |
264 | XSETFASTINT (p->left_col, 0); |
265 | XSETFASTINT (p->top_line, 0); | |
266 | XSETFASTINT (p->total_lines, 0); | |
267 | XSETFASTINT (p->total_cols, 0); | |
d834a2e9 | 268 | XSETFASTINT (p->hscroll, 0); |
ea68264b | 269 | XSETFASTINT (p->min_hscroll, 0); |
949cf20f | 270 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
271 | p->start = Fmake_marker (); |
272 | p->pointm = Fmake_marker (); | |
d834a2e9 | 273 | XSETFASTINT (p->use_time, 0); |
44fa5b1e | 274 | p->frame = Qnil; |
7ab12479 JB |
275 | p->display_table = Qnil; |
276 | p->dedicated = Qnil; | |
5500c422 GM |
277 | p->pseudo_window_p = 0; |
278 | bzero (&p->cursor, sizeof (p->cursor)); | |
279 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
280 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
281 | p->desired_matrix = p->current_matrix = 0; | |
7a146de2 | 282 | p->nrows_scale_factor = p->ncols_scale_factor = 1; |
5500c422 | 283 | p->phys_cursor_type = -1; |
4b26579e | 284 | p->phys_cursor_width = -1; |
5500c422 GM |
285 | p->must_be_updated_p = 0; |
286 | XSETFASTINT (p->window_end_vpos, 0); | |
287 | XSETFASTINT (p->window_end_pos, 0); | |
288 | p->window_end_valid = Qnil; | |
289 | p->vscroll = 0; | |
cffec418 | 290 | XSETWINDOW (val, p); |
5500c422 | 291 | XSETFASTINT (p->last_point, 0); |
7bbb5782 | 292 | p->frozen_window_start_p = 0; |
6b448755 | 293 | p->last_cursor_off_p = p->cursor_off_p = 0; |
949cf20f KS |
294 | p->left_margin_cols = Qnil; |
295 | p->right_margin_cols = Qnil; | |
296 | p->left_fringe_width = Qnil; | |
297 | p->right_fringe_width = Qnil; | |
298 | p->fringes_outside_margins = Qnil; | |
299 | p->scroll_bar_width = Qnil; | |
300 | p->vertical_scroll_bar_type = Qt; | |
67492200 GM |
301 | |
302 | Vwindow_list = Qnil; | |
7ab12479 JB |
303 | return val; |
304 | } | |
305 | ||
306 | DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0, | |
fdb82f93 PJ |
307 | doc: /* Return the window that the cursor now appears in and commands apply to. */) |
308 | () | |
7ab12479 JB |
309 | { |
310 | return selected_window; | |
311 | } | |
312 | ||
83762ba4 | 313 | DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0, |
fdb82f93 PJ |
314 | doc: /* Return the window used now for minibuffers. |
315 | If the optional argument FRAME is specified, return the minibuffer window | |
316 | used by that frame. */) | |
317 | (frame) | |
83762ba4 | 318 | Lisp_Object frame; |
7ab12479 | 319 | { |
83762ba4 | 320 | if (NILP (frame)) |
1ae1a37d | 321 | frame = selected_frame; |
b7826503 | 322 | CHECK_LIVE_FRAME (frame); |
83762ba4 | 323 | return FRAME_MINIBUF_WINDOW (XFRAME (frame)); |
7ab12479 JB |
324 | } |
325 | ||
605be8af | 326 | DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, Swindow_minibuffer_p, 0, 1, 0, |
29a831f8 LT |
327 | doc: /* Returns non-nil if WINDOW is a minibuffer window. |
328 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 329 | (window) |
7ab12479 JB |
330 | Lisp_Object window; |
331 | { | |
332 | struct window *w = decode_window (window); | |
53bb6b99 | 333 | return MINI_WINDOW_P (w) ? Qt : Qnil; |
81e4d465 MB |
334 | } |
335 | ||
336 | ||
7ab12479 | 337 | DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, |
fdb82f93 | 338 | Spos_visible_in_window_p, 0, 3, 0, |
a0a37a6f | 339 | doc: /* Return non-nil if position POS is currently on the frame in WINDOW. |
fdb82f93 PJ |
340 | Return nil if that position is scrolled vertically out of view. |
341 | If a character is only partially visible, nil is returned, unless the | |
342 | optional argument PARTIALLY is non-nil. | |
a0a37a6f | 343 | If POS is only out of view because of horizontal scrolling, return non-nil. |
120b7781 | 344 | If POS is t, it specifies the position of the last visible glyph in WINDOW. |
0cc1039f KS |
345 | POS defaults to point in WINDOW; WINDOW defaults to the selected window. |
346 | ||
347 | If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil, | |
5a857365 KS |
348 | return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]), |
349 | where X and Y are the pixel coordinates relative to the top left corner | |
350 | of the window. The remaining elements are omitted if the character after | |
351 | POS is fully visible; otherwise, RTOP and RBOT are the number of pixels | |
120b7781 | 352 | off-window at the top and bottom of the row, ROWH is the height of the |
7bbc67d2 | 353 | display row, and VPOS is the row number (0-based) containing POS. */) |
fdb82f93 | 354 | (pos, window, partially) |
5cdb3cf3 | 355 | Lisp_Object pos, window, partially; |
7ab12479 JB |
356 | { |
357 | register struct window *w; | |
7ab12479 JB |
358 | register int posint; |
359 | register struct buffer *buf; | |
9a132b1f | 360 | struct text_pos top; |
0cc1039f | 361 | Lisp_Object in_window = Qnil; |
5a857365 | 362 | int rtop, rbot, rowh, vpos, fully_p = 1; |
0cc1039f | 363 | int x, y; |
7ab12479 | 364 | |
f28b75a9 MB |
365 | w = decode_window (window); |
366 | buf = XBUFFER (w->buffer); | |
367 | SET_TEXT_POS_FROM_MARKER (top, w->start); | |
368 | ||
120b7781 KS |
369 | if (EQ (pos, Qt)) |
370 | posint = -1; | |
371 | else if (!NILP (pos)) | |
7ab12479 | 372 | { |
b7826503 | 373 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
374 | posint = XINT (pos); |
375 | } | |
f28b75a9 MB |
376 | else if (w == XWINDOW (selected_window)) |
377 | posint = PT; | |
378 | else | |
379 | posint = XMARKER (w->pointm)->charpos; | |
7ab12479 | 380 | |
0cc1039f KS |
381 | /* If position is above window start or outside buffer boundaries, |
382 | or if window start is out of range, position is not visible. */ | |
120b7781 KS |
383 | if ((EQ (pos, Qt) |
384 | || (posint >= CHARPOS (top) && posint <= BUF_ZV (buf))) | |
0cc1039f KS |
385 | && CHARPOS (top) >= BUF_BEGV (buf) |
386 | && CHARPOS (top) <= BUF_ZV (buf) | |
5a857365 | 387 | && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos) |
e56263e5 | 388 | && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p))) |
0cc1039f KS |
389 | in_window = Qt; |
390 | ||
391 | if (!NILP (in_window) && !NILP (partially)) | |
5a857365 KS |
392 | { |
393 | Lisp_Object part = Qnil; | |
394 | if (!fully_p) | |
395 | part = list4 (make_number (rtop), make_number (rbot), | |
396 | make_number (rowh), make_number (vpos)); | |
397 | in_window = Fcons (make_number (x), | |
398 | Fcons (make_number (y), part)); | |
399 | } | |
400 | ||
9a132b1f | 401 | return in_window; |
7ab12479 | 402 | } |
53bb6b99 | 403 | |
536833ab | 404 | DEFUN ("window-line-height", Fwindow_line_height, |
7bbc67d2 | 405 | Swindow_line_height, 0, 2, 0, |
536833ab KS |
406 | doc: /* Return height in pixels of text line LINE in window WINDOW. |
407 | If WINDOW is nil or omitted, use selected window. | |
408 | ||
7bbc67d2 KS |
409 | Return height of current line if LINE is omitted or nil. Return height of |
410 | header or mode line if LINE is `header-line' and `mode-line'. | |
411 | Otherwise, LINE is a text line number starting from 0. A negative number | |
412 | counts from the end of the window. | |
536833ab | 413 | |
7bbc67d2 | 414 | Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height |
536833ab | 415 | in pixels of the visible part of the line, VPOS and YPOS are the |
68e67a4e | 416 | vertical position in lines and pixels of the line, relative to the top |
120b7781 | 417 | of the first text line, and OFFBOT is the number of off-window pixels at |
68e67a4e KS |
418 | the bottom of the text line. If there are off-window pixels at the top |
419 | of the (first) text line, YPOS is negative. | |
536833ab KS |
420 | |
421 | Return nil if window display is not up-to-date. In that case, use | |
422 | `pos-visible-in-window-p' to obtain the information. */) | |
423 | (line, window) | |
424 | Lisp_Object line, window; | |
b3a10345 KS |
425 | { |
426 | register struct window *w; | |
427 | register struct buffer *b; | |
428 | struct glyph_row *row, *end_row; | |
536833ab | 429 | int max_y, crop, i, n; |
b3a10345 KS |
430 | |
431 | w = decode_window (window); | |
432 | ||
433 | if (noninteractive | |
b3a10345 | 434 | || w->pseudo_window_p) |
7bbc67d2 | 435 | return Qnil; |
b3a10345 KS |
436 | |
437 | CHECK_BUFFER (w->buffer); | |
438 | b = XBUFFER (w->buffer); | |
439 | ||
440 | /* Fail if current matrix is not up-to-date. */ | |
441 | if (NILP (w->window_end_valid) | |
442 | || current_buffer->clip_changed | |
443 | || current_buffer->prevent_redisplay_optimizations_p | |
444 | || XFASTINT (w->last_modified) < BUF_MODIFF (b) | |
445 | || XFASTINT (w->last_overlay_modified) < BUF_OVERLAY_MODIFF (b)) | |
446 | return Qnil; | |
447 | ||
7bbc67d2 KS |
448 | if (NILP (line)) |
449 | { | |
450 | i = w->cursor.vpos; | |
451 | if (i < 0 || i >= w->current_matrix->nrows | |
452 | || (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p)) | |
453 | return Qnil; | |
454 | max_y = window_text_bottom_y (w); | |
455 | goto found_row; | |
456 | } | |
457 | ||
536833ab | 458 | if (EQ (line, Qheader_line)) |
b3a10345 | 459 | { |
536833ab KS |
460 | if (!WINDOW_WANTS_HEADER_LINE_P (w)) |
461 | return Qnil; | |
462 | row = MATRIX_HEADER_LINE_ROW (w->current_matrix); | |
b3a10345 KS |
463 | if (!row->enabled_p) |
464 | return Qnil; | |
536833ab KS |
465 | return list4 (make_number (row->height), |
466 | make_number (0), make_number (0), | |
467 | make_number (0)); | |
b3a10345 | 468 | } |
536833ab KS |
469 | |
470 | if (EQ (line, Qmode_line)) | |
b3a10345 | 471 | { |
536833ab KS |
472 | row = MATRIX_MODE_LINE_ROW (w->current_matrix); |
473 | if (!row->enabled_p) | |
474 | return Qnil; | |
475 | return list4 (make_number (row->height), | |
476 | make_number (0), /* not accurate */ | |
477 | make_number (WINDOW_HEADER_LINE_HEIGHT (w) | |
478 | + window_text_bottom_y (w)), | |
479 | make_number (0)); | |
480 | } | |
b3a10345 | 481 | |
536833ab | 482 | CHECK_NUMBER (line); |
7bbc67d2 | 483 | n = XINT (line); |
536833ab KS |
484 | |
485 | row = MATRIX_FIRST_TEXT_ROW (w->current_matrix); | |
486 | end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w); | |
487 | max_y = window_text_bottom_y (w); | |
7bbc67d2 | 488 | i = 0; |
536833ab KS |
489 | |
490 | while ((n < 0 || i < n) | |
491 | && row <= end_row && row->enabled_p | |
492 | && row->y + row->height < max_y) | |
493 | row++, i++; | |
b3a10345 | 494 | |
536833ab KS |
495 | if (row > end_row || !row->enabled_p) |
496 | return Qnil; | |
497 | ||
7bbc67d2 | 498 | if (++n < 0) |
536833ab KS |
499 | { |
500 | if (-n > i) | |
501 | return Qnil; | |
7bbc67d2 KS |
502 | row += n; |
503 | i += n; | |
b3a10345 KS |
504 | } |
505 | ||
7bbc67d2 | 506 | found_row: |
536833ab KS |
507 | crop = max (0, (row->y + row->height) - max_y); |
508 | return list4 (make_number (row->height + min (0, row->y) - crop), | |
7bbc67d2 | 509 | make_number (i), |
536833ab KS |
510 | make_number (row->y), |
511 | make_number (crop)); | |
b3a10345 KS |
512 | } |
513 | ||
536833ab | 514 | |
7ab12479 JB |
515 | \f |
516 | static struct window * | |
517 | decode_window (window) | |
518 | register Lisp_Object window; | |
519 | { | |
265a9e55 | 520 | if (NILP (window)) |
7ab12479 JB |
521 | return XWINDOW (selected_window); |
522 | ||
b7826503 | 523 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
524 | return XWINDOW (window); |
525 | } | |
526 | ||
e995d23a RS |
527 | static struct window * |
528 | decode_any_window (window) | |
529 | register Lisp_Object window; | |
530 | { | |
531 | if (NILP (window)) | |
532 | return XWINDOW (selected_window); | |
533 | ||
534 | CHECK_WINDOW (window); | |
535 | return XWINDOW (window); | |
536 | } | |
537 | ||
7ab12479 | 538 | DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0, |
c2755926 LT |
539 | doc: /* Return the buffer that WINDOW is displaying. |
540 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 541 | (window) |
7ab12479 JB |
542 | Lisp_Object window; |
543 | { | |
544 | return decode_window (window)->buffer; | |
545 | } | |
546 | ||
547 | DEFUN ("window-height", Fwindow_height, Swindow_height, 0, 1, 0, | |
c85322d0 EZ |
548 | doc: /* Return the number of lines in WINDOW (including its mode line). |
549 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 550 | (window) |
7ab12479 JB |
551 | Lisp_Object window; |
552 | { | |
e995d23a | 553 | return decode_any_window (window)->total_lines; |
7ab12479 JB |
554 | } |
555 | ||
556 | DEFUN ("window-width", Fwindow_width, Swindow_width, 0, 1, 0, | |
fdb82f93 PJ |
557 | doc: /* Return the number of display columns in WINDOW. |
558 | This is the width that is usable columns available for text in WINDOW. | |
559 | If you want to find out how many columns WINDOW takes up, | |
560 | use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */) | |
561 | (window) | |
7ab12479 JB |
562 | Lisp_Object window; |
563 | { | |
e995d23a | 564 | return make_number (window_box_text_cols (decode_any_window (window))); |
7ab12479 JB |
565 | } |
566 | ||
35ea56c9 MR |
567 | DEFUN ("window-full-width-p", Fwindow_full_width_p, Swindow_full_width_p, 0, 1, 0, |
568 | doc: /* Return t if WINDOW is as wide as its frame. | |
569 | WINDOW defaults to the selected window. */) | |
570 | (window) | |
571 | Lisp_Object window; | |
572 | { | |
573 | return WINDOW_FULL_WIDTH_P (decode_any_window (window)) ? Qt : Qnil; | |
574 | } | |
575 | ||
7ab12479 | 576 | DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0, |
c85322d0 EZ |
577 | doc: /* Return the number of columns by which WINDOW is scrolled from left margin. |
578 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 579 | (window) |
7ab12479 JB |
580 | Lisp_Object window; |
581 | { | |
582 | return decode_window (window)->hscroll; | |
583 | } | |
584 | ||
585 | DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0, | |
fdb82f93 | 586 | doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL. |
a0a37a6f | 587 | Return NCOL. NCOL should be zero or positive. |
ebadb1e4 EZ |
588 | |
589 | Note that if `automatic-hscrolling' is non-nil, you cannot scroll the | |
120b7781 | 590 | window so that the location of point moves off-window. */) |
fdb82f93 | 591 | (window, ncol) |
ea68264b | 592 | Lisp_Object window, ncol; |
7ab12479 | 593 | { |
ea68264b GM |
594 | struct window *w = decode_window (window); |
595 | int hscroll; | |
7ab12479 | 596 | |
b7826503 | 597 | CHECK_NUMBER (ncol); |
ea68264b | 598 | hscroll = max (0, XINT (ncol)); |
177c0ea7 | 599 | |
ea68264b GM |
600 | /* Prevent redisplay shortcuts when changing the hscroll. */ |
601 | if (XINT (w->hscroll) != hscroll) | |
b1599b4c | 602 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; |
177c0ea7 | 603 | |
c67fa410 | 604 | w->hscroll = make_number (hscroll); |
7ab12479 JB |
605 | return ncol; |
606 | } | |
607 | ||
190eb263 RS |
608 | DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger, |
609 | Swindow_redisplay_end_trigger, 0, 1, 0, | |
fdb82f93 | 610 | doc: /* Return WINDOW's redisplay end trigger value. |
c85322d0 | 611 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
612 | See `set-window-redisplay-end-trigger' for more information. */) |
613 | (window) | |
190eb263 RS |
614 | Lisp_Object window; |
615 | { | |
616 | return decode_window (window)->redisplay_end_trigger; | |
617 | } | |
618 | ||
619 | DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger, | |
620 | Sset_window_redisplay_end_trigger, 2, 2, 0, | |
fdb82f93 PJ |
621 | doc: /* Set WINDOW's redisplay end trigger value to VALUE. |
622 | VALUE should be a buffer position (typically a marker) or nil. | |
623 | If it is a buffer position, then if redisplay in WINDOW reaches a position | |
624 | beyond VALUE, the functions in `redisplay-end-trigger-functions' are called | |
625 | with two arguments: WINDOW, and the end trigger value. | |
626 | Afterwards the end-trigger value is reset to nil. */) | |
627 | (window, value) | |
190eb263 RS |
628 | register Lisp_Object window, value; |
629 | { | |
630 | register struct window *w; | |
631 | ||
632 | w = decode_window (window); | |
633 | w->redisplay_end_trigger = value; | |
634 | return value; | |
635 | } | |
636 | ||
7ab12479 | 637 | DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0, |
fdb82f93 PJ |
638 | doc: /* Return a list of the edge coordinates of WINDOW. |
639 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
c99a9eb3 RS |
640 | RIGHT is one more than the rightmost column occupied by WINDOW, |
641 | and BOTTOM is one more than the bottommost row occupied by WINDOW. | |
642 | The edges include the space used by the window's scroll bar, | |
643 | display margins, fringes, header line, and mode line, if it has them. | |
644 | To get the edges of the actual text area, use `window-inside-edges'. */) | |
fdb82f93 | 645 | (window) |
7ab12479 JB |
646 | Lisp_Object window; |
647 | { | |
e995d23a | 648 | register struct window *w = decode_any_window (window); |
7ab12479 | 649 | |
949cf20f KS |
650 | return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w)), |
651 | Fcons (make_number (WINDOW_TOP_EDGE_LINE (w)), | |
652 | Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w)), | |
653 | Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w)), | |
654 | Qnil)))); | |
7ab12479 JB |
655 | } |
656 | ||
c99a9eb3 RS |
657 | DEFUN ("window-pixel-edges", Fwindow_pixel_edges, Swindow_pixel_edges, 0, 1, 0, |
658 | doc: /* Return a list of the edge pixel coordinates of WINDOW. | |
659 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
660 | RIGHT is one more than the rightmost x position occupied by WINDOW, | |
661 | and BOTTOM is one more than the bottommost y position occupied by WINDOW. | |
662 | The pixel edges include the space used by the window's scroll bar, | |
663 | display margins, fringes, header line, and mode line, if it has them. | |
664 | To get the edges of the actual text area, use `window-inside-pixel-edges'. */) | |
665 | (window) | |
666 | Lisp_Object window; | |
667 | { | |
e995d23a | 668 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
669 | |
670 | return Fcons (make_number (WINDOW_LEFT_EDGE_X (w)), | |
671 | Fcons (make_number (WINDOW_TOP_EDGE_Y (w)), | |
672 | Fcons (make_number (WINDOW_RIGHT_EDGE_X (w)), | |
673 | Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w)), | |
674 | Qnil)))); | |
675 | } | |
676 | ||
677 | DEFUN ("window-inside-edges", Fwindow_inside_edges, Swindow_inside_edges, 0, 1, 0, | |
678 | doc: /* Return a list of the edge coordinates of WINDOW. | |
679 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. | |
680 | RIGHT is one more than the rightmost column used by text in WINDOW, | |
681 | and BOTTOM is one more than the bottommost row used by text in WINDOW. | |
682 | The inside edges do not include the space used by the window's scroll bar, | |
683 | display margins, fringes, header line, and/or mode line. */) | |
684 | (window) | |
685 | Lisp_Object window; | |
686 | { | |
e995d23a | 687 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
688 | |
689 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w) | |
690 | + WINDOW_LEFT_MARGIN_COLS (w) | |
691 | + WINDOW_LEFT_FRINGE_COLS (w)), | |
692 | make_number (WINDOW_TOP_EDGE_LINE (w) | |
693 | + WINDOW_HEADER_LINE_LINES (w)), | |
f3fbdb1f | 694 | make_number (WINDOW_BOX_RIGHT_EDGE_COL (w) |
c99a9eb3 RS |
695 | - WINDOW_RIGHT_MARGIN_COLS (w) |
696 | - WINDOW_RIGHT_FRINGE_COLS (w)), | |
697 | make_number (WINDOW_BOTTOM_EDGE_LINE (w) | |
698 | - WINDOW_MODE_LINE_LINES (w))); | |
699 | } | |
700 | ||
701 | DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges, Swindow_inside_pixel_edges, 0, 1, 0, | |
a0a37a6f | 702 | doc: /* Return a list of the edge pixel coordinates of WINDOW. |
c99a9eb3 RS |
703 | \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame. |
704 | RIGHT is one more than the rightmost x position used by text in WINDOW, | |
705 | and BOTTOM is one more than the bottommost y position used by text in WINDOW. | |
706 | The inside edges do not include the space used by the window's scroll bar, | |
707 | display margins, fringes, header line, and/or mode line. */) | |
708 | (window) | |
709 | Lisp_Object window; | |
710 | { | |
e995d23a | 711 | register struct window *w = decode_any_window (window); |
c99a9eb3 RS |
712 | |
713 | return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w) | |
714 | + WINDOW_LEFT_MARGIN_WIDTH (w) | |
715 | + WINDOW_LEFT_FRINGE_WIDTH (w)), | |
716 | make_number (WINDOW_TOP_EDGE_Y (w) | |
717 | + WINDOW_HEADER_LINE_HEIGHT (w)), | |
f3fbdb1f | 718 | make_number (WINDOW_BOX_RIGHT_EDGE_X (w) |
c99a9eb3 RS |
719 | - WINDOW_RIGHT_MARGIN_WIDTH (w) |
720 | - WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
721 | make_number (WINDOW_BOTTOM_EDGE_Y (w) | |
722 | - WINDOW_MODE_LINE_HEIGHT (w))); | |
723 | } | |
724 | ||
fbad6f9a | 725 | /* Test if the character at column *X, row *Y is within window W. |
341f3858 | 726 | If it is not, return ON_NOTHING; |
d5783c40 JB |
727 | if it is in the window's text area, |
728 | set *x and *y to its location relative to the upper left corner | |
729 | of the window, and | |
341f3858 KS |
730 | return ON_TEXT; |
731 | if it is on the window's modeline, return ON_MODE_LINE; | |
d5783c40 | 732 | if it is on the border between the window and its right sibling, |
341f3858 | 733 | return ON_VERTICAL_BORDER. |
6487f669 RS |
734 | if it is on a scroll bar, |
735 | return ON_SCROLL_BAR. | |
341f3858 | 736 | if it is on the window's top line, return ON_HEADER_LINE; |
81d189fd | 737 | if it is in left or right fringe of the window, |
341f3858 KS |
738 | return ON_LEFT_FRINGE or ON_RIGHT_FRINGE, and convert *X and *Y |
739 | to window-relative coordinates; | |
49b996e7 | 740 | if it is in the marginal area to the left/right of the window, |
341f3858 KS |
741 | return ON_LEFT_MARGIN or ON_RIGHT_MARGIN, and convert *X and *Y |
742 | to window-relative coordinates. | |
5500c422 GM |
743 | |
744 | X and Y are frame relative pixel coordinates. */ | |
745 | ||
7442878f | 746 | static enum window_part |
d5783c40 JB |
747 | coordinates_in_window (w, x, y) |
748 | register struct window *w; | |
749 | register int *x, *y; | |
750 | { | |
b0228ace GM |
751 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
752 | int left_x, right_x, top_y, bottom_y; | |
7442878f | 753 | enum window_part part; |
949cf20f KS |
754 | int ux = FRAME_COLUMN_WIDTH (f); |
755 | int x0 = WINDOW_LEFT_EDGE_X (w); | |
756 | int x1 = WINDOW_RIGHT_EDGE_X (w); | |
dad75588 GM |
757 | /* The width of the area where the vertical line can be dragged. |
758 | (Between mode lines for instance. */ | |
759 | int grabbable_width = ux; | |
949cf20f | 760 | int lmargin_width, rmargin_width, text_left, text_right; |
b0228ace | 761 | |
466539bc EZ |
762 | /* In what's below, we subtract 1 when computing right_x because we |
763 | want the rightmost pixel, which is given by left_pixel+width-1. */ | |
5500c422 GM |
764 | if (w->pseudo_window_p) |
765 | { | |
766 | left_x = 0; | |
949cf20f KS |
767 | right_x = WINDOW_TOTAL_WIDTH (w) - 1; |
768 | top_y = WINDOW_TOP_EDGE_Y (w); | |
769 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 GM |
770 | } |
771 | else | |
772 | { | |
949cf20f KS |
773 | left_x = WINDOW_BOX_LEFT_EDGE_X (w); |
774 | right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1; | |
775 | top_y = WINDOW_TOP_EDGE_Y (w); | |
776 | bottom_y = WINDOW_BOTTOM_EDGE_Y (w); | |
5500c422 | 777 | } |
37962e60 | 778 | |
949cf20f KS |
779 | /* Outside any interesting row? */ |
780 | if (*y < top_y || *y >= bottom_y) | |
781 | return ON_NOTHING; | |
782 | ||
1cb794ba GM |
783 | /* On the mode line or header line? If it's near the start of |
784 | the mode or header line of window that's has a horizontal | |
785 | sibling, say it's on the vertical line. That's to be able | |
786 | to resize windows horizontally in case we're using toolkit | |
787 | scroll bars. */ | |
b0228ace | 788 | |
1cb794ba | 789 | if (WINDOW_WANTS_MODELINE_P (w) |
0de01dfe | 790 | && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)) |
1cb794ba | 791 | { |
949cf20f KS |
792 | part = ON_MODE_LINE; |
793 | ||
794 | header_vertical_border_check: | |
b0228ace GM |
795 | /* We're somewhere on the mode line. We consider the place |
796 | between mode lines of horizontally adjacent mode lines | |
797 | as the vertical border. If scroll bars on the left, | |
798 | return the right window. */ | |
949cf20f KS |
799 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w) |
800 | || WINDOW_RIGHTMOST_P (w)) | |
b0228ace | 801 | { |
1ea40aa2 | 802 | if (!WINDOW_LEFTMOST_P (w) && eabs (*x - x0) < grabbable_width) |
f8c62b70 | 803 | { |
3f489dc7 KS |
804 | /* Convert X and Y to window relative coordinates. |
805 | Vertical border is at the left edge of window. */ | |
f8c62b70 NR |
806 | *x = max (0, *x - x0); |
807 | *y -= top_y; | |
808 | return ON_VERTICAL_BORDER; | |
809 | } | |
b0228ace | 810 | } |
79fd290e | 811 | else |
b0228ace | 812 | { |
1ea40aa2 | 813 | if (eabs (*x - x1) < grabbable_width) |
f8c62b70 | 814 | { |
3f489dc7 KS |
815 | /* Convert X and Y to window relative coordinates. |
816 | Vertical border is at the right edge of window. */ | |
f8c62b70 NR |
817 | *x = min (x1, *x) - x0; |
818 | *y -= top_y; | |
819 | return ON_VERTICAL_BORDER; | |
820 | } | |
b0228ace | 821 | } |
949cf20f | 822 | |
cb639b8f KS |
823 | if (*x < x0 || *x >= x1) |
824 | return ON_NOTHING; | |
825 | ||
a5303820 KS |
826 | /* Convert X and Y to window relative coordinates. |
827 | Mode line starts at left edge of window. */ | |
828 | *x -= x0; | |
829 | *y -= top_y; | |
949cf20f | 830 | return part; |
b0228ace | 831 | } |
949cf20f KS |
832 | |
833 | if (WINDOW_WANTS_HEADER_LINE_P (w) | |
949cf20f | 834 | && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)) |
1cb794ba | 835 | { |
949cf20f KS |
836 | part = ON_HEADER_LINE; |
837 | goto header_vertical_border_check; | |
1cb794ba | 838 | } |
949cf20f | 839 | |
cb639b8f KS |
840 | if (*x < x0 || *x >= x1) |
841 | return ON_NOTHING; | |
842 | ||
949cf20f KS |
843 | /* Outside any interesting column? */ |
844 | if (*x < left_x || *x > right_x) | |
4d1add72 KS |
845 | { |
846 | *y -= top_y; | |
847 | return ON_SCROLL_BAR; | |
848 | } | |
949cf20f KS |
849 | |
850 | lmargin_width = window_box_width (w, LEFT_MARGIN_AREA); | |
851 | rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA); | |
79fd290e | 852 | |
949cf20f KS |
853 | text_left = window_box_left (w, TEXT_AREA); |
854 | text_right = text_left + window_box_width (w, TEXT_AREA); | |
855 | ||
856 | if (FRAME_WINDOW_P (f)) | |
fbad6f9a | 857 | { |
447e9da0 | 858 | if (!w->pseudo_window_p |
949cf20f | 859 | && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w) |
447e9da0 | 860 | && !WINDOW_RIGHTMOST_P (w) |
1ea40aa2 | 861 | && (eabs (*x - right_x) < grabbable_width)) |
f8c62b70 | 862 | { |
3f489dc7 KS |
863 | /* Convert X and Y to window relative coordinates. |
864 | Vertical border is at the right edge of window. */ | |
f8c62b70 NR |
865 | *x = min (right_x, *x) - left_x; |
866 | *y -= top_y; | |
867 | return ON_VERTICAL_BORDER; | |
868 | } | |
fbad6f9a | 869 | } |
447e9da0 GM |
870 | else |
871 | { | |
872 | /* Need to say "*x > right_x" rather than >=, since on character | |
873 | terminals, the vertical line's x coordinate is right_x. */ | |
949cf20f KS |
874 | if (!w->pseudo_window_p |
875 | && !WINDOW_RIGHTMOST_P (w) | |
876 | && *x > right_x - ux) | |
b0228ace GM |
877 | { |
878 | /* On the border on the right side of the window? Assume that | |
879 | this area begins at RIGHT_X minus a canonical char width. */ | |
f8c62b70 NR |
880 | *x = min (right_x, *x) - left_x; |
881 | *y -= top_y; | |
949cf20f | 882 | return ON_VERTICAL_BORDER; |
b0228ace | 883 | } |
447e9da0 | 884 | } |
b0228ace | 885 | |
949cf20f KS |
886 | if (*x < text_left) |
887 | { | |
888 | if (lmargin_width > 0 | |
889 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
890 | ? (*x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w)) | |
891 | : (*x < left_x + lmargin_width))) | |
a5303820 | 892 | { |
0de01dfe | 893 | *x -= left_x; |
a5303820 KS |
894 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) |
895 | *x -= WINDOW_LEFT_FRINGE_WIDTH (w); | |
896 | *y -= top_y; | |
897 | return ON_LEFT_MARGIN; | |
898 | } | |
949cf20f KS |
899 | |
900 | /* Convert X and Y to window-relative pixel coordinates. */ | |
901 | *x -= left_x; | |
902 | *y -= top_y; | |
903 | return ON_LEFT_FRINGE; | |
904 | } | |
905 | ||
906 | if (*x >= text_right) | |
907 | { | |
908 | if (rmargin_width > 0 | |
909 | && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) | |
910 | ? (*x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w)) | |
911 | : (*x >= right_x - rmargin_width))) | |
a5303820 | 912 | { |
66d41723 KS |
913 | *x -= right_x - rmargin_width; |
914 | if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)) | |
915 | *x += WINDOW_RIGHT_FRINGE_WIDTH (w); | |
a5303820 KS |
916 | *y -= top_y; |
917 | return ON_RIGHT_MARGIN; | |
918 | } | |
949cf20f KS |
919 | |
920 | /* Convert X and Y to window-relative pixel coordinates. */ | |
921 | *x -= left_x + WINDOW_LEFT_FRINGE_WIDTH (w); | |
922 | *y -= top_y; | |
923 | return ON_RIGHT_FRINGE; | |
924 | } | |
925 | ||
926 | /* Everything special ruled out - must be on text area */ | |
66d41723 | 927 | *x -= text_left; |
949cf20f KS |
928 | *y -= top_y; |
929 | return ON_TEXT; | |
d5783c40 JB |
930 | } |
931 | ||
b0228ace | 932 | |
d5783c40 | 933 | DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p, |
fdb82f93 PJ |
934 | Scoordinates_in_window_p, 2, 2, 0, |
935 | doc: /* Return non-nil if COORDINATES are in WINDOW. | |
936 | COORDINATES is a cons of the form (X . Y), X and Y being distances | |
937 | measured in characters from the upper-left corner of the frame. | |
938 | \(0 . 0) denotes the character in the upper left corner of the | |
939 | frame. | |
940 | If COORDINATES are in the text portion of WINDOW, | |
941 | the coordinates relative to the window are returned. | |
942 | If they are in the mode line of WINDOW, `mode-line' is returned. | |
943 | If they are in the top mode line of WINDOW, `header-line' is returned. | |
81d189fd KS |
944 | If they are in the left fringe of WINDOW, `left-fringe' is returned. |
945 | If they are in the right fringe of WINDOW, `right-fringe' is returned. | |
fdb82f93 | 946 | If they are on the border between WINDOW and its right sibling, |
49b996e7 GM |
947 | `vertical-line' is returned. |
948 | If they are in the windows's left or right marginal areas, `left-margin'\n\ | |
949 | or `right-margin' is returned. */) | |
fdb82f93 | 950 | (coordinates, window) |
d5783c40 JB |
951 | register Lisp_Object coordinates, window; |
952 | { | |
5500c422 GM |
953 | struct window *w; |
954 | struct frame *f; | |
d5783c40 | 955 | int x, y; |
5500c422 | 956 | Lisp_Object lx, ly; |
d5783c40 | 957 | |
e995d23a | 958 | CHECK_WINDOW (window); |
5500c422 GM |
959 | w = XWINDOW (window); |
960 | f = XFRAME (w->frame); | |
b7826503 | 961 | CHECK_CONS (coordinates); |
5500c422 GM |
962 | lx = Fcar (coordinates); |
963 | ly = Fcdr (coordinates); | |
b7826503 PJ |
964 | CHECK_NUMBER_OR_FLOAT (lx); |
965 | CHECK_NUMBER_OR_FLOAT (ly); | |
81159bb9 RS |
966 | x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f); |
967 | y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f); | |
5500c422 GM |
968 | |
969 | switch (coordinates_in_window (w, &x, &y)) | |
d5783c40 | 970 | { |
7442878f | 971 | case ON_NOTHING: |
d5783c40 JB |
972 | return Qnil; |
973 | ||
7442878f GM |
974 | case ON_TEXT: |
975 | /* X and Y are now window relative pixel coordinates. Convert | |
976 | them to canonical char units before returning them. */ | |
949cf20f KS |
977 | return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x), |
978 | FRAME_CANON_Y_FROM_PIXEL_Y (f, y)); | |
d5783c40 | 979 | |
7442878f | 980 | case ON_MODE_LINE: |
d5783c40 | 981 | return Qmode_line; |
37962e60 | 982 | |
7442878f | 983 | case ON_VERTICAL_BORDER: |
e5d77022 | 984 | return Qvertical_line; |
d5783c40 | 985 | |
7442878f | 986 | case ON_HEADER_LINE: |
045dee35 | 987 | return Qheader_line; |
5500c422 | 988 | |
7442878f GM |
989 | case ON_LEFT_FRINGE: |
990 | return Qleft_fringe; | |
177c0ea7 | 991 | |
7442878f GM |
992 | case ON_RIGHT_FRINGE: |
993 | return Qright_fringe; | |
fbad6f9a | 994 | |
49b996e7 GM |
995 | case ON_LEFT_MARGIN: |
996 | return Qleft_margin; | |
177c0ea7 | 997 | |
49b996e7 GM |
998 | case ON_RIGHT_MARGIN: |
999 | return Qright_margin; | |
1000 | ||
6487f669 RS |
1001 | case ON_SCROLL_BAR: |
1002 | /* Historically we are supposed to return nil in this case. */ | |
1003 | return Qnil; | |
1004 | ||
d5783c40 JB |
1005 | default: |
1006 | abort (); | |
1007 | } | |
1008 | } | |
1009 | ||
67492200 GM |
1010 | |
1011 | /* Callback for foreach_window, used in window_from_coordinates. | |
f95464e4 GM |
1012 | Check if window W contains coordinates specified by USER_DATA which |
1013 | is actually a pointer to a struct check_window_data CW. | |
1014 | ||
1015 | Check if window W contains coordinates *CW->x and *CW->y. If it | |
1016 | does, return W in *CW->window, as Lisp_Object, and return in | |
5372262f | 1017 | *CW->part the part of the window under coordinates *X,*Y. Return |
f95464e4 GM |
1018 | zero from this function to stop iterating over windows. */ |
1019 | ||
1020 | struct check_window_data | |
1021 | { | |
1022 | Lisp_Object *window; | |
341f3858 KS |
1023 | int *x, *y; |
1024 | enum window_part *part; | |
f95464e4 | 1025 | }; |
67492200 GM |
1026 | |
1027 | static int | |
f95464e4 | 1028 | check_window_containing (w, user_data) |
67492200 | 1029 | struct window *w; |
f95464e4 | 1030 | void *user_data; |
67492200 | 1031 | { |
f95464e4 | 1032 | struct check_window_data *cw = (struct check_window_data *) user_data; |
7442878f GM |
1033 | enum window_part found; |
1034 | int continue_p = 1; | |
67492200 | 1035 | |
f95464e4 | 1036 | found = coordinates_in_window (w, cw->x, cw->y); |
7442878f | 1037 | if (found != ON_NOTHING) |
67492200 | 1038 | { |
341f3858 | 1039 | *cw->part = found; |
f95464e4 | 1040 | XSETWINDOW (*cw->window, w); |
7442878f | 1041 | continue_p = 0; |
67492200 | 1042 | } |
177c0ea7 | 1043 | |
7442878f | 1044 | return continue_p; |
67492200 GM |
1045 | } |
1046 | ||
1047 | ||
5500c422 | 1048 | /* Find the window containing frame-relative pixel position X/Y and |
949cf20f KS |
1049 | return it as a Lisp_Object. |
1050 | ||
1051 | If X, Y is on one of the window's special `window_part' elements, | |
1052 | set *PART to the id of that element, and return X and Y converted | |
1053 | to window relative coordinates in WX and WY. | |
1054 | ||
341f3858 | 1055 | If there is no window under X, Y return nil and leave *PART |
67492200 GM |
1056 | unmodified. TOOL_BAR_P non-zero means detect tool-bar windows. |
1057 | ||
1058 | This function was previously implemented with a loop cycling over | |
1059 | windows with Fnext_window, and starting with the frame's selected | |
1060 | window. It turned out that this doesn't work with an | |
1061 | implementation of next_window using Vwindow_list, because | |
1062 | FRAME_SELECTED_WINDOW (F) is not always contained in the window | |
1063 | tree of F when this function is called asynchronously from | |
1064 | note_mouse_highlight. The original loop didn't terminate in this | |
1065 | case. */ | |
5500c422 | 1066 | |
7ab12479 | 1067 | Lisp_Object |
949cf20f | 1068 | window_from_coordinates (f, x, y, part, wx, wy, tool_bar_p) |
67492200 | 1069 | struct frame *f; |
7ab12479 | 1070 | int x, y; |
341f3858 | 1071 | enum window_part *part; |
949cf20f | 1072 | int *wx, *wy; |
9ea173e8 | 1073 | int tool_bar_p; |
7ab12479 | 1074 | { |
67492200 | 1075 | Lisp_Object window; |
f95464e4 | 1076 | struct check_window_data cw; |
341f3858 KS |
1077 | enum window_part dummy; |
1078 | ||
1079 | if (part == 0) | |
1080 | part = &dummy; | |
5500c422 | 1081 | |
67492200 | 1082 | window = Qnil; |
f95464e4 GM |
1083 | cw.window = &window, cw.x = &x, cw.y = &y; cw.part = part; |
1084 | foreach_window (f, check_window_containing, &cw); | |
177c0ea7 | 1085 | |
67492200 GM |
1086 | /* If not found above, see if it's in the tool bar window, if a tool |
1087 | bar exists. */ | |
1088 | if (NILP (window) | |
1089 | && tool_bar_p | |
1090 | && WINDOWP (f->tool_bar_window) | |
949cf20f | 1091 | && WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0 |
7442878f GM |
1092 | && (coordinates_in_window (XWINDOW (f->tool_bar_window), &x, &y) |
1093 | != ON_NOTHING)) | |
5500c422 | 1094 | { |
341f3858 | 1095 | *part = ON_TEXT; |
67492200 | 1096 | window = f->tool_bar_window; |
5500c422 | 1097 | } |
37962e60 | 1098 | |
949cf20f KS |
1099 | if (wx) *wx = x; |
1100 | if (wy) *wy = y; | |
1101 | ||
67492200 | 1102 | return window; |
7ab12479 JB |
1103 | } |
1104 | ||
ab17c3f2 | 1105 | DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0, |
fdb82f93 PJ |
1106 | doc: /* Return window containing coordinates X and Y on FRAME. |
1107 | If omitted, FRAME defaults to the currently selected frame. | |
1108 | The top left corner of the frame is considered to be row 0, | |
1109 | column 0. */) | |
1110 | (x, y, frame) | |
1111 | Lisp_Object x, y, frame; | |
7ab12479 | 1112 | { |
5500c422 | 1113 | struct frame *f; |
7ab12479 | 1114 | |
44fa5b1e | 1115 | if (NILP (frame)) |
1ae1a37d | 1116 | frame = selected_frame; |
b7826503 | 1117 | CHECK_LIVE_FRAME (frame); |
5500c422 | 1118 | f = XFRAME (frame); |
7ab12479 | 1119 | |
5500c422 | 1120 | /* Check that arguments are integers or floats. */ |
b7826503 PJ |
1121 | CHECK_NUMBER_OR_FLOAT (x); |
1122 | CHECK_NUMBER_OR_FLOAT (y); | |
5500c422 | 1123 | |
177c0ea7 | 1124 | return window_from_coordinates (f, |
2c77cf3b RS |
1125 | (FRAME_PIXEL_X_FROM_CANON_X (f, x) |
1126 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
1127 | (FRAME_PIXEL_Y_FROM_CANON_Y (f, y) | |
1128 | + FRAME_INTERNAL_BORDER_WIDTH (f)), | |
949cf20f | 1129 | 0, 0, 0, 0); |
7ab12479 JB |
1130 | } |
1131 | ||
1132 | DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0, | |
fdb82f93 | 1133 | doc: /* Return current value of point in WINDOW. |
c85322d0 EZ |
1134 | WINDOW defaults to the selected window. |
1135 | ||
fdb82f93 PJ |
1136 | For a nonselected window, this is the value point would have |
1137 | if that window were selected. | |
1138 | ||
1139 | Note that, when WINDOW is the selected window and its buffer | |
1140 | is also currently selected, the value returned is the same as (point). | |
1141 | It would be more strictly correct to return the `top-level' value | |
1142 | of point, outside of any save-excursion forms. | |
1143 | But that is hard to define. */) | |
1144 | (window) | |
7ab12479 JB |
1145 | Lisp_Object window; |
1146 | { | |
1147 | register struct window *w = decode_window (window); | |
1148 | ||
1149 | if (w == XWINDOW (selected_window) | |
1150 | && current_buffer == XBUFFER (w->buffer)) | |
1151 | return Fpoint (); | |
1152 | return Fmarker_position (w->pointm); | |
1153 | } | |
1154 | ||
1155 | DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0, | |
fdb82f93 | 1156 | doc: /* Return position at which display currently starts in WINDOW. |
c85322d0 | 1157 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
1158 | This is updated by redisplay or by calling `set-window-start'. */) |
1159 | (window) | |
7ab12479 JB |
1160 | Lisp_Object window; |
1161 | { | |
1162 | return Fmarker_position (decode_window (window)->start); | |
1163 | } | |
1164 | ||
8646118f RS |
1165 | /* This is text temporarily removed from the doc string below. |
1166 | ||
fdb82f93 PJ |
1167 | This function returns nil if the position is not currently known. |
1168 | That happens when redisplay is preempted and doesn't finish. | |
1169 | If in that case you want to compute where the end of the window would | |
1170 | have been if redisplay had finished, do this: | |
1171 | (save-excursion | |
1172 | (goto-char (window-start window)) | |
1173 | (vertical-motion (1- (window-height window)) window) | |
8646118f RS |
1174 | (point))") */ |
1175 | ||
478292ed | 1176 | DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0, |
fdb82f93 | 1177 | doc: /* Return position at which display currently ends in WINDOW. |
c85322d0 | 1178 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
1179 | This is updated by redisplay, when it runs to completion. |
1180 | Simply changing the buffer text or setting `window-start' | |
1181 | does not update this value. | |
a0a37a6f LT |
1182 | Return nil if there is no recorded value. \(This can happen if the |
1183 | last redisplay of WINDOW was preempted, and did not finish.) | |
fdb82f93 PJ |
1184 | If UPDATE is non-nil, compute the up-to-date position |
1185 | if it isn't already recorded. */) | |
1186 | (window, update) | |
478292ed | 1187 | Lisp_Object window, update; |
7ab12479 JB |
1188 | { |
1189 | Lisp_Object value; | |
1190 | struct window *w = decode_window (window); | |
5a41ab94 | 1191 | Lisp_Object buf; |
31790df3 | 1192 | struct buffer *b; |
5a41ab94 RS |
1193 | |
1194 | buf = w->buffer; | |
b7826503 | 1195 | CHECK_BUFFER (buf); |
b3a10345 | 1196 | b = XBUFFER (buf); |
5a41ab94 | 1197 | |
8646118f | 1198 | #if 0 /* This change broke some things. We should make it later. */ |
7250968e RS |
1199 | /* If we don't know the end position, return nil. |
1200 | The user can compute it with vertical-motion if he wants to. | |
1201 | It would be nicer to do it automatically, | |
1202 | but that's so slow that it would probably bother people. */ | |
1203 | if (NILP (w->window_end_valid)) | |
1204 | return Qnil; | |
8646118f | 1205 | #endif |
7250968e | 1206 | |
478292ed RS |
1207 | if (! NILP (update) |
1208 | && ! (! NILP (w->window_end_valid) | |
dfc265a3 | 1209 | && XFASTINT (w->last_modified) >= BUF_MODIFF (b) |
4c9564e8 | 1210 | && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (b)) |
41791a20 | 1211 | && !noninteractive) |
478292ed | 1212 | { |
cbc099e5 GM |
1213 | struct text_pos startp; |
1214 | struct it it; | |
b3a10345 KS |
1215 | struct buffer *old_buffer = NULL; |
1216 | ||
1217 | /* Cannot use Fvertical_motion because that function doesn't | |
1218 | cope with variable-height lines. */ | |
1219 | if (b != current_buffer) | |
1220 | { | |
1221 | old_buffer = current_buffer; | |
1222 | set_buffer_internal (b); | |
1223 | } | |
2d6d9df0 GM |
1224 | |
1225 | /* In case W->start is out of the range, use something | |
cb795ec4 | 1226 | reasonable. This situation occurred when loading a file with |
2d6d9df0 GM |
1227 | `-l' containing a call to `rmail' with subsequent other |
1228 | commands. At the end, W->start happened to be BEG, while | |
cbc099e5 | 1229 | rmail had already narrowed the buffer. */ |
2d6d9df0 | 1230 | if (XMARKER (w->start)->charpos < BEGV) |
cbc099e5 | 1231 | SET_TEXT_POS (startp, BEGV, BEGV_BYTE); |
2d6d9df0 | 1232 | else if (XMARKER (w->start)->charpos > ZV) |
cbc099e5 | 1233 | SET_TEXT_POS (startp, ZV, ZV_BYTE); |
2d6d9df0 | 1234 | else |
cbc099e5 GM |
1235 | SET_TEXT_POS_FROM_MARKER (startp, w->start); |
1236 | ||
cbc099e5 GM |
1237 | start_display (&it, w, startp); |
1238 | move_it_vertically (&it, window_box_height (w)); | |
c3c45f65 GM |
1239 | if (it.current_y < it.last_visible_y) |
1240 | move_it_past_eol (&it); | |
cbc099e5 | 1241 | value = make_number (IT_CHARPOS (it)); |
177c0ea7 | 1242 | |
99593a9d GM |
1243 | if (old_buffer) |
1244 | set_buffer_internal (old_buffer); | |
478292ed RS |
1245 | } |
1246 | else | |
b3a10345 | 1247 | XSETINT (value, BUF_Z (b) - XFASTINT (w->window_end_pos)); |
7ab12479 JB |
1248 | |
1249 | return value; | |
1250 | } | |
1251 | ||
1252 | DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0, | |
a0a37a6f LT |
1253 | doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer. |
1254 | Return POS. */) | |
fdb82f93 | 1255 | (window, pos) |
7ab12479 JB |
1256 | Lisp_Object window, pos; |
1257 | { | |
1258 | register struct window *w = decode_window (window); | |
1259 | ||
b7826503 | 1260 | CHECK_NUMBER_COERCE_MARKER (pos); |
e90c4fe6 RS |
1261 | if (w == XWINDOW (selected_window) |
1262 | && XBUFFER (w->buffer) == current_buffer) | |
7ab12479 JB |
1263 | Fgoto_char (pos); |
1264 | else | |
1265 | set_marker_restricted (w->pointm, pos, w->buffer); | |
799417bd | 1266 | |
0685cb3c GM |
1267 | /* We have to make sure that redisplay updates the window to show |
1268 | the new value of point. */ | |
1269 | if (!EQ (window, selected_window)) | |
799417bd | 1270 | ++windows_or_buffers_changed; |
177c0ea7 | 1271 | |
7ab12479 JB |
1272 | return pos; |
1273 | } | |
1274 | ||
1275 | DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0, | |
fdb82f93 | 1276 | doc: /* Make display in WINDOW start at position POS in WINDOW's buffer. |
a0a37a6f | 1277 | Return POS. |
fdb82f93 PJ |
1278 | Optional third arg NOFORCE non-nil inhibits next redisplay |
1279 | from overriding motion of point in order to display at this exact start. */) | |
1280 | (window, pos, noforce) | |
7ab12479 JB |
1281 | Lisp_Object window, pos, noforce; |
1282 | { | |
1283 | register struct window *w = decode_window (window); | |
1284 | ||
b7826503 | 1285 | CHECK_NUMBER_COERCE_MARKER (pos); |
7ab12479 JB |
1286 | set_marker_restricted (w->start, pos, w->buffer); |
1287 | /* this is not right, but much easier than doing what is right. */ | |
1288 | w->start_at_line_beg = Qnil; | |
265a9e55 | 1289 | if (NILP (noforce)) |
7ab12479 JB |
1290 | w->force_start = Qt; |
1291 | w->update_mode_line = Qt; | |
d834a2e9 | 1292 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 1293 | XSETFASTINT (w->last_overlay_modified, 0); |
62c07cc7 JB |
1294 | if (!EQ (window, selected_window)) |
1295 | windows_or_buffers_changed++; | |
ce7fae7d | 1296 | |
7ab12479 JB |
1297 | return pos; |
1298 | } | |
1299 | ||
1300 | DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p, | |
1301 | 1, 1, 0, | |
fdb82f93 PJ |
1302 | doc: /* Return WINDOW's dedicated object, usually t or nil. |
1303 | See also `set-window-dedicated-p'. */) | |
1304 | (window) | |
7ab12479 JB |
1305 | Lisp_Object window; |
1306 | { | |
1307 | return decode_window (window)->dedicated; | |
1308 | } | |
1309 | ||
d207b766 RS |
1310 | DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, |
1311 | Sset_window_dedicated_p, 2, 2, 0, | |
fdb82f93 PJ |
1312 | doc: /* Control whether WINDOW is dedicated to the buffer it displays. |
1313 | If it is dedicated, Emacs will not automatically change | |
1314 | which buffer appears in it. | |
1315 | The second argument is the new value for the dedication flag; | |
1316 | non-nil means yes. */) | |
1317 | (window, arg) | |
1318 | Lisp_Object window, arg; | |
7ab12479 JB |
1319 | { |
1320 | register struct window *w = decode_window (window); | |
1321 | ||
2d0834cc | 1322 | w->dedicated = arg; |
7ab12479 JB |
1323 | |
1324 | return w->dedicated; | |
1325 | } | |
1326 | ||
1327 | DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table, | |
1328 | 0, 1, 0, | |
c85322d0 EZ |
1329 | doc: /* Return the display-table that WINDOW is using. |
1330 | WINDOW defaults to the selected window. */) | |
fdb82f93 | 1331 | (window) |
7ab12479 JB |
1332 | Lisp_Object window; |
1333 | { | |
1334 | return decode_window (window)->display_table; | |
1335 | } | |
1336 | ||
5500c422 GM |
1337 | /* Get the display table for use on window W. This is either W's |
1338 | display table or W's buffer's display table. Ignore the specified | |
1339 | tables if they are not valid; if no valid table is specified, | |
1340 | return 0. */ | |
7ab12479 | 1341 | |
319315f1 | 1342 | struct Lisp_Char_Table * |
7ab12479 JB |
1343 | window_display_table (w) |
1344 | struct window *w; | |
1345 | { | |
c756cdbe GM |
1346 | struct Lisp_Char_Table *dp = NULL; |
1347 | ||
1348 | if (DISP_TABLE_P (w->display_table)) | |
1349 | dp = XCHAR_TABLE (w->display_table); | |
1350 | else if (BUFFERP (w->buffer)) | |
1351 | { | |
1352 | struct buffer *b = XBUFFER (w->buffer); | |
177c0ea7 | 1353 | |
c756cdbe GM |
1354 | if (DISP_TABLE_P (b->display_table)) |
1355 | dp = XCHAR_TABLE (b->display_table); | |
1356 | else if (DISP_TABLE_P (Vstandard_display_table)) | |
1357 | dp = XCHAR_TABLE (Vstandard_display_table); | |
1358 | } | |
171d003c | 1359 | |
c756cdbe | 1360 | return dp; |
7ab12479 JB |
1361 | } |
1362 | ||
3a2712f9 | 1363 | DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0, |
fdb82f93 PJ |
1364 | doc: /* Set WINDOW's display-table to TABLE. */) |
1365 | (window, table) | |
7ab12479 JB |
1366 | register Lisp_Object window, table; |
1367 | { | |
1368 | register struct window *w; | |
7ab12479 JB |
1369 | |
1370 | w = decode_window (window); | |
1371 | w->display_table = table; | |
1372 | return table; | |
1373 | } | |
1374 | \f | |
1375 | /* Record info on buffer window w is displaying | |
1376 | when it is about to cease to display that buffer. */ | |
dfcf069d | 1377 | static void |
7ab12479 JB |
1378 | unshow_buffer (w) |
1379 | register struct window *w; | |
1380 | { | |
12cae7c0 | 1381 | Lisp_Object buf; |
b73ea88e | 1382 | struct buffer *b; |
7ab12479 | 1383 | |
12cae7c0 | 1384 | buf = w->buffer; |
b73ea88e RS |
1385 | b = XBUFFER (buf); |
1386 | if (b != XMARKER (w->pointm)->buffer) | |
7ab12479 JB |
1387 | abort (); |
1388 | ||
573f41ab | 1389 | #if 0 |
7ab12479 JB |
1390 | if (w == XWINDOW (selected_window) |
1391 | || ! EQ (buf, XWINDOW (selected_window)->buffer)) | |
1392 | /* Do this except when the selected window's buffer | |
1393 | is being removed from some other window. */ | |
573f41ab RS |
1394 | #endif |
1395 | /* last_window_start records the start position that this buffer | |
1396 | had in the last window to be disconnected from it. | |
1397 | Now that this statement is unconditional, | |
1398 | it is possible for the buffer to be displayed in the | |
1399 | selected window, while last_window_start reflects another | |
1400 | window which was recently showing the same buffer. | |
1401 | Some people might say that might be a good thing. Let's see. */ | |
b73ea88e | 1402 | b->last_window_start = marker_position (w->start); |
7ab12479 JB |
1403 | |
1404 | /* Point in the selected window's buffer | |
1405 | is actually stored in that buffer, and the window's pointm isn't used. | |
1406 | So don't clobber point in that buffer. */ | |
719eaeb1 GM |
1407 | if (! EQ (buf, XWINDOW (selected_window)->buffer) |
1408 | /* This line helps to fix Horsley's testbug.el bug. */ | |
8801a864 KR |
1409 | && !(WINDOWP (b->last_selected_window) |
1410 | && w != XWINDOW (b->last_selected_window) | |
719eaeb1 | 1411 | && EQ (buf, XWINDOW (b->last_selected_window)->buffer))) |
b73ea88e RS |
1412 | temp_set_point_both (b, |
1413 | clip_to_bounds (BUF_BEGV (b), | |
1414 | XMARKER (w->pointm)->charpos, | |
1415 | BUF_ZV (b)), | |
1416 | clip_to_bounds (BUF_BEGV_BYTE (b), | |
1417 | marker_byte_position (w->pointm), | |
1418 | BUF_ZV_BYTE (b))); | |
177c0ea7 | 1419 | |
8801a864 KR |
1420 | if (WINDOWP (b->last_selected_window) |
1421 | && w == XWINDOW (b->last_selected_window)) | |
719eaeb1 | 1422 | b->last_selected_window = Qnil; |
7ab12479 JB |
1423 | } |
1424 | ||
1425 | /* Put replacement into the window structure in place of old. */ | |
dfcf069d | 1426 | static void |
7ab12479 JB |
1427 | replace_window (old, replacement) |
1428 | Lisp_Object old, replacement; | |
1429 | { | |
1430 | register Lisp_Object tem; | |
1431 | register struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
1432 | ||
44fa5b1e JB |
1433 | /* If OLD is its frame's root_window, then replacement is the new |
1434 | root_window for that frame. */ | |
7ab12479 | 1435 | |
7f4161e0 | 1436 | if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) |
44fa5b1e | 1437 | FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; |
7ab12479 | 1438 | |
949cf20f KS |
1439 | p->left_col = o->left_col; |
1440 | p->top_line = o->top_line; | |
1441 | p->total_cols = o->total_cols; | |
1442 | p->total_lines = o->total_lines; | |
5500c422 GM |
1443 | p->desired_matrix = p->current_matrix = 0; |
1444 | p->vscroll = 0; | |
1445 | bzero (&p->cursor, sizeof (p->cursor)); | |
1446 | bzero (&p->last_cursor, sizeof (p->last_cursor)); | |
1447 | bzero (&p->phys_cursor, sizeof (p->phys_cursor)); | |
1448 | p->phys_cursor_type = -1; | |
4b26579e | 1449 | p->phys_cursor_width = -1; |
5500c422 GM |
1450 | p->must_be_updated_p = 0; |
1451 | p->pseudo_window_p = 0; | |
1452 | XSETFASTINT (p->window_end_vpos, 0); | |
1453 | XSETFASTINT (p->window_end_pos, 0); | |
1454 | p->window_end_valid = Qnil; | |
7bbb5782 | 1455 | p->frozen_window_start_p = 0; |
949cf20f | 1456 | p->orig_top_line = p->orig_total_lines = Qnil; |
7ab12479 JB |
1457 | |
1458 | p->next = tem = o->next; | |
265a9e55 | 1459 | if (!NILP (tem)) |
7ab12479 JB |
1460 | XWINDOW (tem)->prev = replacement; |
1461 | ||
1462 | p->prev = tem = o->prev; | |
265a9e55 | 1463 | if (!NILP (tem)) |
7ab12479 JB |
1464 | XWINDOW (tem)->next = replacement; |
1465 | ||
1466 | p->parent = tem = o->parent; | |
265a9e55 | 1467 | if (!NILP (tem)) |
7ab12479 JB |
1468 | { |
1469 | if (EQ (XWINDOW (tem)->vchild, old)) | |
1470 | XWINDOW (tem)->vchild = replacement; | |
1471 | if (EQ (XWINDOW (tem)->hchild, old)) | |
1472 | XWINDOW (tem)->hchild = replacement; | |
1473 | } | |
1474 | ||
1475 | /*** Here, if replacement is a vertical combination | |
1476 | and so is its new parent, we should make replacement's | |
1477 | children be children of that parent instead. ***/ | |
1478 | } | |
1479 | ||
1480 | DEFUN ("delete-window", Fdelete_window, Sdelete_window, 0, 1, "", | |
fdb82f93 PJ |
1481 | doc: /* Remove WINDOW from the display. Default is selected window. */) |
1482 | (window) | |
7ab12479 | 1483 | register Lisp_Object window; |
543f5fb1 RS |
1484 | { |
1485 | delete_window (window); | |
1486 | ||
1487 | if (! NILP (Vwindow_configuration_change_hook) | |
1488 | && ! NILP (Vrun_hooks)) | |
1489 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
1490 | ||
1491 | return Qnil; | |
1492 | } | |
1493 | ||
5e14b1fc | 1494 | void |
543f5fb1 RS |
1495 | delete_window (window) |
1496 | register Lisp_Object window; | |
7ab12479 JB |
1497 | { |
1498 | register Lisp_Object tem, parent, sib; | |
1499 | register struct window *p; | |
1500 | register struct window *par; | |
951f9df5 | 1501 | struct frame *f; |
7ab12479 | 1502 | |
605be8af JB |
1503 | /* Because this function is called by other C code on non-leaf |
1504 | windows, the CHECK_LIVE_WINDOW macro would choke inappropriately, | |
1505 | so we can't decode_window here. */ | |
265a9e55 | 1506 | if (NILP (window)) |
7ab12479 JB |
1507 | window = selected_window; |
1508 | else | |
b7826503 | 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 */ |
e661376d | 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 | |
e661376d KS |
2315 | case REDISPLAY_BUFFER_WINDOWS: |
2316 | if (EQ (w->buffer, obj)) | |
2317 | { | |
2318 | mark_window_display_accurate (window, 0); | |
40c6ee74 KS |
2319 | w->update_mode_line = Qt; |
2320 | XBUFFER (obj)->prevent_redisplay_optimizations_p = 1; | |
2321 | ++update_mode_lines; | |
e661376d KS |
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 | ||
a899216f | 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 | ||
0aa513ed JD |
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 | ||
0aa513ed JD |
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 | |
0aa513ed JD |
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 | } | |
0aa513ed JD |
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; | |
7ab12479 | 3118 | } |
5fe0b054 RS |
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); | |
7ab12479 | 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; |
0aa513ed | 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 | ||
0aa513ed | 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; | |
0aa513ed JD |
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; |
0aa513ed | 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 | { | |
0aa513ed | 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. */ | |
0aa513ed | 3217 | last_pos += new_size; |
7ab12479 | 3218 | } |
233a4a2c | 3219 | |
0aa513ed JD |
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 | |
5500c422 GM |
3309 | /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero |
3310 | means it's allowed to run hooks. See make_frame for a case where | |
949cf20f KS |
3311 | it's not allowed. KEEP_MARGINS_P non-zero means that the current |
3312 | margins, fringes, and scroll-bar settings of the window are not | |
3313 | reset from the buffer's local settings. */ | |
7ab12479 | 3314 | |
5500c422 | 3315 | void |
949cf20f | 3316 | set_window_buffer (window, buffer, run_hooks_p, keep_margins_p) |
5500c422 | 3317 | Lisp_Object window, buffer; |
949cf20f | 3318 | int run_hooks_p, keep_margins_p; |
5500c422 GM |
3319 | { |
3320 | struct window *w = XWINDOW (window); | |
3321 | struct buffer *b = XBUFFER (buffer); | |
aed13378 | 3322 | int count = SPECPDL_INDEX (); |
7ab12479 JB |
3323 | |
3324 | w->buffer = buffer; | |
86e48436 RS |
3325 | |
3326 | if (EQ (window, selected_window)) | |
5500c422 | 3327 | b->last_selected_window = window; |
beb4e312 | 3328 | |
c49a0495 KS |
3329 | /* Let redisplay errors through. */ |
3330 | b->display_error_modiff = 0; | |
3331 | ||
beb4e312 | 3332 | /* Update time stamps of buffer display. */ |
5500c422 GM |
3333 | if (INTEGERP (b->display_count)) |
3334 | XSETINT (b->display_count, XINT (b->display_count) + 1); | |
3335 | b->display_time = Fcurrent_time (); | |
86e48436 | 3336 | |
d834a2e9 | 3337 | XSETFASTINT (w->window_end_pos, 0); |
5500c422 GM |
3338 | XSETFASTINT (w->window_end_vpos, 0); |
3339 | bzero (&w->last_cursor, sizeof w->last_cursor); | |
5a41ab94 | 3340 | w->window_end_valid = Qnil; |
1c686c99 | 3341 | w->hscroll = w->min_hscroll = make_number (0); |
224227d1 | 3342 | w->vscroll = 0; |
5500c422 | 3343 | set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b)); |
7ab12479 | 3344 | set_marker_restricted (w->start, |
5500c422 | 3345 | make_number (b->last_window_start), |
7ab12479 JB |
3346 | buffer); |
3347 | w->start_at_line_beg = Qnil; | |
e36ab06b | 3348 | w->force_start = Qnil; |
d834a2e9 | 3349 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 3350 | XSETFASTINT (w->last_overlay_modified, 0); |
7ab12479 | 3351 | windows_or_buffers_changed++; |
5b03d3c0 RS |
3352 | |
3353 | /* We must select BUFFER for running the window-scroll-functions. | |
3354 | If WINDOW is selected, switch permanently. | |
3355 | Otherwise, switch but go back to the ambient buffer afterward. */ | |
7ab12479 JB |
3356 | if (EQ (window, selected_window)) |
3357 | Fset_buffer (buffer); | |
5b03d3c0 RS |
3358 | /* We can't check ! NILP (Vwindow_scroll_functions) here |
3359 | because that might itself be a local variable. */ | |
3360 | else if (window_initialized) | |
3361 | { | |
3362 | record_unwind_protect (Fset_window_buffer_unwind, Fcurrent_buffer ()); | |
3363 | Fset_buffer (buffer); | |
3364 | } | |
3365 | ||
949cf20f KS |
3366 | if (!keep_margins_p) |
3367 | { | |
3368 | /* Set left and right marginal area width etc. from buffer. */ | |
3369 | ||
79fd290e | 3370 | /* This may call adjust_window_margins three times, so |
949cf20f | 3371 | temporarily disable window margins. */ |
3834380d KS |
3372 | Lisp_Object save_left = w->left_margin_cols; |
3373 | Lisp_Object save_right = w->right_margin_cols; | |
3374 | ||
949cf20f KS |
3375 | w->left_margin_cols = w->right_margin_cols = Qnil; |
3376 | ||
3377 | Fset_window_fringes (window, | |
3378 | b->left_fringe_width, b->right_fringe_width, | |
3379 | b->fringes_outside_margins); | |
3380 | ||
3381 | Fset_window_scroll_bars (window, | |
3382 | b->scroll_bar_width, | |
3383 | b->vertical_scroll_bar_type, Qnil); | |
3384 | ||
3834380d KS |
3385 | w->left_margin_cols = save_left; |
3386 | w->right_margin_cols = save_right; | |
3387 | ||
949cf20f KS |
3388 | Fset_window_margins (window, |
3389 | b->left_margin_cols, b->right_margin_cols); | |
3390 | } | |
7ab12479 | 3391 | |
5500c422 GM |
3392 | if (run_hooks_p) |
3393 | { | |
3394 | if (! NILP (Vwindow_scroll_functions)) | |
3395 | run_hook_with_args_2 (Qwindow_scroll_functions, window, | |
3396 | Fmarker_position (w->start)); | |
3397 | ||
3398 | if (! NILP (Vwindow_configuration_change_hook) | |
3399 | && ! NILP (Vrun_hooks)) | |
3400 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
3401 | } | |
543f5fb1 | 3402 | |
5b03d3c0 | 3403 | unbind_to (count, Qnil); |
5500c422 | 3404 | } |
5b03d3c0 | 3405 | |
5500c422 | 3406 | |
949cf20f | 3407 | DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0, |
fdb82f93 | 3408 | doc: /* Make WINDOW display BUFFER as its contents. |
c2755926 | 3409 | BUFFER can be a buffer or the name of an existing buffer. |
ab80314b | 3410 | Optional third arg KEEP-MARGINS non-nil means that WINDOW's current |
949cf20f KS |
3411 | display margins, fringe widths, and scroll bar settings are maintained; |
3412 | the default is to reset these from BUFFER's local settings or the frame | |
6cb4a892 RS |
3413 | defaults. |
3414 | ||
3415 | This function runs the hook `window-scroll-functions'. */) | |
949cf20f | 3416 | (window, buffer, keep_margins) |
56613f06 | 3417 | register Lisp_Object window, buffer, keep_margins; |
5500c422 GM |
3418 | { |
3419 | register Lisp_Object tem; | |
3420 | register struct window *w = decode_window (window); | |
5500c422 | 3421 | |
bed0c171 | 3422 | XSETWINDOW (window, w); |
5500c422 | 3423 | buffer = Fget_buffer (buffer); |
b7826503 | 3424 | CHECK_BUFFER (buffer); |
5500c422 GM |
3425 | |
3426 | if (NILP (XBUFFER (buffer)->name)) | |
3427 | error ("Attempt to display deleted buffer"); | |
3428 | ||
3429 | tem = w->buffer; | |
3430 | if (NILP (tem)) | |
3431 | error ("Window is deleted"); | |
3432 | else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
3433 | is first being set up. */ | |
3434 | { | |
3435 | if (!NILP (w->dedicated) && !EQ (tem, buffer)) | |
3436 | error ("Window is dedicated to `%s'", | |
d5db4077 | 3437 | SDATA (XBUFFER (tem)->name)); |
5500c422 GM |
3438 | |
3439 | unshow_buffer (w); | |
3440 | } | |
3441 | ||
949cf20f | 3442 | set_window_buffer (window, buffer, 1, !NILP (keep_margins)); |
7ab12479 JB |
3443 | return Qnil; |
3444 | } | |
3445 | ||
2d0834cc SM |
3446 | /* Note that selected_window can be nil |
3447 | when this is called from Fset_window_configuration. */ | |
3448 | ||
14d87dc9 | 3449 | DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0, |
fdb82f93 | 3450 | doc: /* Select WINDOW. Most editing will apply to WINDOW's buffer. |
e963215c | 3451 | If WINDOW is not already selected, make WINDOW's buffer current |
c2755926 | 3452 | and make WINDOW the frame's selected window. Return WINDOW. |
14d87dc9 SM |
3453 | Optional second arg NORECORD non-nil means |
3454 | do not put this buffer at the front of the list of recently selected ones. | |
282f7831 | 3455 | |
fdb82f93 PJ |
3456 | Note that the main editor command loop |
3457 | selects the buffer of the selected window before each command. */) | |
14d87dc9 SM |
3458 | (window, norecord) |
3459 | register Lisp_Object window, norecord; | |
7ab12479 JB |
3460 | { |
3461 | register struct window *w; | |
719eaeb1 | 3462 | register struct window *ow; |
1ae1a37d | 3463 | struct frame *sf; |
7ab12479 | 3464 | |
b7826503 | 3465 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
3466 | |
3467 | w = XWINDOW (window); | |
50e88778 | 3468 | w->frozen_window_start_p = 0; |
7ab12479 | 3469 | |
2a1893f4 SM |
3470 | ++window_select_count; |
3471 | XSETFASTINT (w->use_time, window_select_count); | |
7ab12479 JB |
3472 | if (EQ (window, selected_window)) |
3473 | return window; | |
3474 | ||
ca2d5566 SM |
3475 | sf = SELECTED_FRAME (); |
3476 | if (XFRAME (WINDOW_FRAME (w)) != sf) | |
3477 | { | |
3478 | XFRAME (WINDOW_FRAME (w))->selected_window = window; | |
3479 | /* Use this rather than Fhandle_switch_frame | |
3480 | so that FRAME_FOCUS_FRAME is moved appropriately as we | |
3481 | move around in the state where a minibuffer in a separate | |
3482 | frame is active. */ | |
3483 | Fselect_frame (WINDOW_FRAME (w)); | |
3484 | /* Fselect_frame called us back so we've done all the work already. */ | |
3485 | eassert (EQ (window, selected_window)); | |
3486 | return window; | |
3487 | } | |
3488 | else | |
3489 | sf->selected_window = window; | |
3490 | ||
a46c0153 RS |
3491 | /* Store the current buffer's actual point into the |
3492 | old selected window. It belongs to that window, | |
3493 | and when the window is not selected, must be in the window. */ | |
719eaeb1 GM |
3494 | if (!NILP (selected_window)) |
3495 | { | |
3496 | ow = XWINDOW (selected_window); | |
3497 | if (! NILP (ow->buffer)) | |
3498 | set_marker_both (ow->pointm, ow->buffer, | |
3499 | BUF_PT (XBUFFER (ow->buffer)), | |
3500 | BUF_PT_BYTE (XBUFFER (ow->buffer))); | |
3501 | } | |
7ab12479 JB |
3502 | |
3503 | selected_window = window; | |
7ab12479 | 3504 | |
14d87dc9 | 3505 | if (NILP (norecord)) |
b7354ddf | 3506 | record_buffer (w->buffer); |
7ab12479 JB |
3507 | Fset_buffer (w->buffer); |
3508 | ||
86e48436 RS |
3509 | XBUFFER (w->buffer)->last_selected_window = window; |
3510 | ||
7ab12479 JB |
3511 | /* Go to the point recorded in the window. |
3512 | This is important when the buffer is in more | |
3513 | than one window. It also matters when | |
3514 | redisplay_window has altered point after scrolling, | |
3515 | because it makes the change only in the window. */ | |
3516 | { | |
3517 | register int new_point = marker_position (w->pointm); | |
3518 | if (new_point < BEGV) | |
3519 | SET_PT (BEGV); | |
a9c95e08 | 3520 | else if (new_point > ZV) |
7ab12479 JB |
3521 | SET_PT (ZV); |
3522 | else | |
3523 | SET_PT (new_point); | |
3524 | } | |
3525 | ||
3526 | windows_or_buffers_changed++; | |
3527 | return window; | |
3528 | } | |
14d87dc9 SM |
3529 | |
3530 | static Lisp_Object | |
3531 | select_window_norecord (window) | |
3532 | Lisp_Object window; | |
3533 | { | |
3534 | return Fselect_window (window, Qt); | |
3535 | } | |
b7354ddf | 3536 | \f |
441a127e RS |
3537 | /* Deiconify the frame containing the window WINDOW, |
3538 | unless it is the selected frame; | |
3539 | then return WINDOW. | |
3540 | ||
3541 | The reason for the exception for the selected frame | |
3542 | is that it seems better not to change the selected frames visibility | |
3543 | merely because of displaying a different buffer in it. | |
3544 | The deiconification is useful when a buffer gets shown in | |
3545 | another frame that you were not using lately. */ | |
d07f802a RS |
3546 | |
3547 | static Lisp_Object | |
3548 | display_buffer_1 (window) | |
3549 | Lisp_Object window; | |
3550 | { | |
1ae1a37d GM |
3551 | Lisp_Object frame = XWINDOW (window)->frame; |
3552 | FRAME_PTR f = XFRAME (frame); | |
177c0ea7 | 3553 | |
d07f802a | 3554 | FRAME_SAMPLE_VISIBILITY (f); |
177c0ea7 | 3555 | |
2d0834cc SM |
3556 | if (EQ (frame, selected_frame)) |
3557 | ; /* Assume the selected frame is already visible enough. */ | |
3558 | else if (minibuf_level > 0 | |
3559 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
3560 | && WINDOW_LIVE_P (minibuf_selected_window) | |
3561 | && EQ (frame, WINDOW_FRAME (XWINDOW (minibuf_selected_window)))) | |
3562 | ; /* Assume the frame from which we invoked the minibuffer is visible. */ | |
3563 | else | |
60117126 RS |
3564 | { |
3565 | if (FRAME_ICONIFIED_P (f)) | |
1ae1a37d | 3566 | Fmake_frame_visible (frame); |
37962e60 | 3567 | else if (FRAME_VISIBLE_P (f)) |
1ae1a37d | 3568 | Fraise_frame (frame); |
60117126 | 3569 | } |
177c0ea7 | 3570 | |
d07f802a RS |
3571 | return window; |
3572 | } | |
3573 | ||
4628f7a4 | 3574 | DEFUN ("special-display-p", Fspecial_display_p, Sspecial_display_p, 1, 1, 0, |
d99b4859 | 3575 | doc: /* Returns non-nil if a buffer named BUFFER-NAME gets a special frame. |
c019856e RS |
3576 | If the value is t, `display-buffer' or `pop-to-buffer' would create a |
3577 | special frame for that buffer using the default frame parameters. | |
3578 | ||
3579 | If the value is a list, it is a list of frame parameters that would be used | |
d99b4859 RS |
3580 | to make a frame for that buffer. |
3581 | The variables `special-display-buffer-names' | |
3582 | and `special-display-regexps' control this. */) | |
fdb82f93 | 3583 | (buffer_name) |
4628f7a4 EN |
3584 | Lisp_Object buffer_name; |
3585 | { | |
3586 | Lisp_Object tem; | |
3587 | ||
b7826503 | 3588 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
3589 | |
3590 | tem = Fmember (buffer_name, Vspecial_display_buffer_names); | |
3591 | if (!NILP (tem)) | |
3592 | return Qt; | |
3593 | ||
3594 | tem = Fassoc (buffer_name, Vspecial_display_buffer_names); | |
3595 | if (!NILP (tem)) | |
3596 | return XCDR (tem); | |
3597 | ||
3598 | for (tem = Vspecial_display_regexps; CONSP (tem); tem = XCDR (tem)) | |
3599 | { | |
3600 | Lisp_Object car = XCAR (tem); | |
3601 | if (STRINGP (car) | |
3602 | && fast_string_match (car, buffer_name) >= 0) | |
3603 | return Qt; | |
3604 | else if (CONSP (car) | |
3605 | && STRINGP (XCAR (car)) | |
3606 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
0057b00a | 3607 | return XCDR (car); |
4628f7a4 EN |
3608 | } |
3609 | return Qnil; | |
177c0ea7 | 3610 | } |
4628f7a4 EN |
3611 | |
3612 | DEFUN ("same-window-p", Fsame_window_p, Ssame_window_p, 1, 1, 0, | |
c019856e RS |
3613 | doc: /* Returns non-nil if a buffer named BUFFER-NAME would use the same window. |
3614 | More precisely, if `display-buffer' or `pop-to-buffer' would display | |
3615 | that buffer in the selected window rather than (as usual) in some other window. | |
fdb82f93 PJ |
3616 | See `same-window-buffer-names' and `same-window-regexps'. */) |
3617 | (buffer_name) | |
4628f7a4 EN |
3618 | Lisp_Object buffer_name; |
3619 | { | |
3620 | Lisp_Object tem; | |
3621 | ||
b7826503 | 3622 | CHECK_STRING (buffer_name); |
4628f7a4 EN |
3623 | |
3624 | tem = Fmember (buffer_name, Vsame_window_buffer_names); | |
3625 | if (!NILP (tem)) | |
3626 | return Qt; | |
3627 | ||
3628 | tem = Fassoc (buffer_name, Vsame_window_buffer_names); | |
3629 | if (!NILP (tem)) | |
3630 | return Qt; | |
3631 | ||
3632 | for (tem = Vsame_window_regexps; CONSP (tem); tem = XCDR (tem)) | |
3633 | { | |
3634 | Lisp_Object car = XCAR (tem); | |
3635 | if (STRINGP (car) | |
3636 | && fast_string_match (car, buffer_name) >= 0) | |
3637 | return Qt; | |
3638 | else if (CONSP (car) | |
3639 | && STRINGP (XCAR (car)) | |
3640 | && fast_string_match (XCAR (car), buffer_name) >= 0) | |
3641 | return Qt; | |
3642 | } | |
3643 | return Qnil; | |
3644 | } | |
3645 | ||
fdb82f93 | 3646 | /* Use B so the default is (other-buffer). */ |
53f76081 | 3647 | DEFUN ("display-buffer", Fdisplay_buffer, Sdisplay_buffer, 1, 3, |
fdb82f93 PJ |
3648 | "BDisplay buffer: \nP", |
3649 | doc: /* Make BUFFER appear in some window but don't select it. | |
473d3c06 | 3650 | BUFFER must be the name of an existing buffer, or, when called from Lisp, |
c2755926 | 3651 | a buffer. |
fdb82f93 PJ |
3652 | If BUFFER is shown already in some window, just use that one, |
3653 | unless the window is the selected window and the optional second | |
3654 | argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg). | |
3655 | If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER. | |
3656 | Returns the window displaying BUFFER. | |
079d288f | 3657 | If `display-buffer-reuse-frames' is non-nil, and another frame is currently |
fdb82f93 PJ |
3658 | displaying BUFFER, then simply raise that frame. |
3659 | ||
9a7e95f3 RS |
3660 | The variables `special-display-buffer-names', |
3661 | `special-display-regexps', `same-window-buffer-names', and | |
3662 | `same-window-regexps' customize how certain buffer names are handled. | |
9297079e | 3663 | The latter two take effect only if NOT-THIS-WINDOW is nil. |
fdb82f93 | 3664 | |
3c9bbf9f RS |
3665 | If optional argument FRAME is `visible', check all visible frames |
3666 | for a window to use. | |
3667 | If FRAME is 0, check all visible and iconified frames. | |
3668 | If FRAME is t, check all frames. | |
3669 | If FRAME is a frame, check only that frame. | |
3670 | If FRAME is nil, check only the selected frame | |
fdb82f93 PJ |
3671 | (actually the last nonminibuffer frame), |
3672 | unless `pop-up-frames' or `display-buffer-reuse-frames' is non-nil, | |
3673 | which means search visible and iconified frames. | |
3674 | ||
876e2665 GM |
3675 | If a full-width window on a splittable frame is available to display |
3676 | the buffer, it may be split, subject to the value of the variable | |
3677 | `split-height-threshold'. | |
3678 | ||
fdb82f93 PJ |
3679 | If `even-window-heights' is non-nil, window heights will be evened out |
3680 | if displaying the buffer causes two vertically adjacent windows to be | |
1971a872 | 3681 | displayed. */) |
fdb82f93 | 3682 | (buffer, not_this_window, frame) |
92f94a12 | 3683 | Lisp_Object buffer, not_this_window, frame; |
7ab12479 | 3684 | { |
aee631c2 | 3685 | register Lisp_Object window, tem, swp; |
1ae1a37d | 3686 | struct frame *f; |
7ab12479 | 3687 | |
aee631c2 | 3688 | swp = Qnil; |
7ab12479 | 3689 | buffer = Fget_buffer (buffer); |
b7826503 | 3690 | CHECK_BUFFER (buffer); |
7ab12479 | 3691 | |
265a9e55 | 3692 | if (!NILP (Vdisplay_buffer_function)) |
7ab12479 JB |
3693 | return call2 (Vdisplay_buffer_function, buffer, not_this_window); |
3694 | ||
265a9e55 | 3695 | if (NILP (not_this_window) |
7ab12479 | 3696 | && XBUFFER (XWINDOW (selected_window)->buffer) == XBUFFER (buffer)) |
d07f802a | 3697 | return display_buffer_1 (selected_window); |
7ab12479 | 3698 | |
855d8627 RS |
3699 | /* See if the user has specified this buffer should appear |
3700 | in the selected window. */ | |
3701 | if (NILP (not_this_window)) | |
3702 | { | |
aee631c2 RS |
3703 | swp = Fsame_window_p (XBUFFER (buffer)->name); |
3704 | if (!NILP (swp) && !no_switch_window (selected_window)) | |
c63dc4a2 RS |
3705 | { |
3706 | Fswitch_to_buffer (buffer, Qnil); | |
d07f802a | 3707 | return display_buffer_1 (selected_window); |
c63dc4a2 | 3708 | } |
855d8627 RS |
3709 | } |
3710 | ||
079d288f | 3711 | /* If the user wants pop-up-frames or display-buffer-reuse-frames, |
73dc5198 KH |
3712 | look for a window showing BUFFER on any visible or iconified frame. |
3713 | Otherwise search only the current frame. */ | |
53f76081 RS |
3714 | if (! NILP (frame)) |
3715 | tem = frame; | |
9c3da604 GM |
3716 | else if (pop_up_frames |
3717 | || display_buffer_reuse_frames | |
3718 | || last_nonminibuf_frame == 0) | |
73dc5198 KH |
3719 | XSETFASTINT (tem, 0); |
3720 | else | |
73dc5198 | 3721 | XSETFRAME (tem, last_nonminibuf_frame); |
177c0ea7 | 3722 | |
73dc5198 | 3723 | window = Fget_buffer_window (buffer, tem); |
265a9e55 JB |
3724 | if (!NILP (window) |
3725 | && (NILP (not_this_window) || !EQ (window, selected_window))) | |
9c3da604 | 3726 | return display_buffer_1 (window); |
7ab12479 | 3727 | |
a90712c2 | 3728 | /* Certain buffer names get special handling. */ |
aee631c2 | 3729 | if (!NILP (Vspecial_display_function) && NILP (swp)) |
a90712c2 | 3730 | { |
4628f7a4 EN |
3731 | tem = Fspecial_display_p (XBUFFER (buffer)->name); |
3732 | if (EQ (tem, Qt)) | |
a90712c2 | 3733 | return call1 (Vspecial_display_function, buffer); |
4628f7a4 EN |
3734 | if (CONSP (tem)) |
3735 | return call2 (Vspecial_display_function, buffer, tem); | |
a90712c2 RS |
3736 | } |
3737 | ||
44fa5b1e JB |
3738 | /* If there are no frames open that have more than a minibuffer, |
3739 | we need to create a new frame. */ | |
3740 | if (pop_up_frames || last_nonminibuf_frame == 0) | |
7ab12479 | 3741 | { |
a90712c2 | 3742 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); |
949cf20f | 3743 | Fset_window_buffer (window, buffer, Qnil); |
d07f802a | 3744 | return display_buffer_1 (window); |
7ab12479 | 3745 | } |
7ab12479 | 3746 | |
1ae1a37d | 3747 | f = SELECTED_FRAME (); |
43bad991 | 3748 | if (pop_up_windows |
1ae1a37d | 3749 | || FRAME_MINIBUF_ONLY_P (f) |
cee67da9 RS |
3750 | /* If the current frame is a special display frame, |
3751 | don't try to reuse its windows. */ | |
1ae1a37d | 3752 | || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f))->dedicated)) |
7ab12479 | 3753 | { |
12cae7c0 | 3754 | Lisp_Object frames; |
90ab5c62 SM |
3755 | struct gcpro gcpro1; |
3756 | GCPRO1 (buffer); | |
12cae7c0 | 3757 | |
37962e60 | 3758 | frames = Qnil; |
1ae1a37d | 3759 | if (FRAME_MINIBUF_ONLY_P (f)) |
74112613 | 3760 | XSETFRAME (frames, last_nonminibuf_frame); |
7ab12479 | 3761 | |
cee67da9 RS |
3762 | /* Note that both Fget_largest_window and Fget_lru_window |
3763 | ignore minibuffers and dedicated windows. | |
3764 | This means they can return nil. */ | |
7ab12479 | 3765 | |
cee67da9 RS |
3766 | /* If the frame we would try to split cannot be split, |
3767 | try other frames. */ | |
1ae1a37d | 3768 | if (FRAME_NO_SPLIT_P (NILP (frames) ? f : last_nonminibuf_frame)) |
cee67da9 RS |
3769 | { |
3770 | /* Try visible frames first. */ | |
3cbb13c8 | 3771 | window = Fget_largest_window (Qvisible, Qt); |
cee67da9 RS |
3772 | /* If that didn't work, try iconified frames. */ |
3773 | if (NILP (window)) | |
3cbb13c8 SM |
3774 | window = Fget_largest_window (make_number (0), Qt); |
3775 | #if 0 /* Don't try windows on other displays. */ | |
cee67da9 | 3776 | if (NILP (window)) |
3cbb13c8 SM |
3777 | window = Fget_largest_window (Qt, Qt); |
3778 | #endif | |
cee67da9 RS |
3779 | } |
3780 | else | |
3cbb13c8 | 3781 | window = Fget_largest_window (frames, Qt); |
cee67da9 | 3782 | |
1971a872 RF |
3783 | /* If the largest window is tall enough, full-width, and either eligible |
3784 | for splitting or the only window, split it. */ | |
265a9e55 | 3785 | if (!NILP (window) |
92cca945 | 3786 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
f1de8c77 | 3787 | && WINDOW_FULL_WIDTH_P (XWINDOW (window)) |
e01c1b52 EZ |
3788 | && (window_height (window) >= split_height_threshold |
3789 | || (NILP (XWINDOW (window)->parent))) | |
f1de8c77 MR |
3790 | && (window_height (window) |
3791 | >= (2 * window_min_size_2 (XWINDOW (window), 0)))) | |
90ab5c62 | 3792 | window = call1 (Vsplit_window_preferred_function, window); |
7ab12479 JB |
3793 | else |
3794 | { | |
1942f68f RS |
3795 | Lisp_Object upper, lower, other; |
3796 | ||
3cbb13c8 | 3797 | window = Fget_lru_window (frames, Qt); |
1971a872 RF |
3798 | /* If the LRU window is tall enough, and either eligible for |
3799 | splitting and selected or the only window, split it. */ | |
cee67da9 | 3800 | if (!NILP (window) |
92cca945 | 3801 | && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window)->frame)) |
e01c1b52 EZ |
3802 | && ((EQ (window, selected_window) |
3803 | && window_height (window) >= split_height_threshold) | |
3804 | || (NILP (XWINDOW (window)->parent))) | |
3805 | && (window_height (window) | |
3806 | >= (2 * window_min_size_2 (XWINDOW (window), 0)))) | |
1971a872 | 3807 | window = call1 (Vsplit_window_preferred_function, window); |
49e99345 SM |
3808 | else |
3809 | window = Fget_lru_window (frames, Qnil); | |
cee67da9 | 3810 | /* If Fget_lru_window returned nil, try other approaches. */ |
48d9379d | 3811 | |
cee67da9 | 3812 | /* Try visible frames first. */ |
48d9379d RS |
3813 | if (NILP (window)) |
3814 | window = Fget_buffer_window (buffer, Qvisible); | |
cee67da9 | 3815 | if (NILP (window)) |
3cbb13c8 | 3816 | window = Fget_largest_window (Qvisible, Qnil); |
cee67da9 | 3817 | /* If that didn't work, try iconified frames. */ |
48d9379d RS |
3818 | if (NILP (window)) |
3819 | window = Fget_buffer_window (buffer, make_number (0)); | |
cee67da9 | 3820 | if (NILP (window)) |
3cbb13c8 SM |
3821 | window = Fget_largest_window (make_number (0), Qnil); |
3822 | ||
3823 | #if 0 /* Don't try frames on other displays. */ | |
48d9379d RS |
3824 | if (NILP (window)) |
3825 | window = Fget_buffer_window (buffer, Qt); | |
cee67da9 | 3826 | if (NILP (window)) |
3cbb13c8 SM |
3827 | window = Fget_largest_window (Qt, Qnil); |
3828 | #endif | |
cee67da9 RS |
3829 | /* As a last resort, make a new frame. */ |
3830 | if (NILP (window)) | |
3831 | window = Fframe_selected_window (call0 (Vpop_up_frame_function)); | |
1942f68f RS |
3832 | /* If window appears above or below another, |
3833 | even out their heights. */ | |
cac66e4f | 3834 | other = upper = lower = Qnil; |
1942f68f RS |
3835 | if (!NILP (XWINDOW (window)->prev)) |
3836 | other = upper = XWINDOW (window)->prev, lower = window; | |
3837 | if (!NILP (XWINDOW (window)->next)) | |
3838 | other = lower = XWINDOW (window)->next, upper = window; | |
3839 | if (!NILP (other) | |
6529ed87 | 3840 | && !NILP (Veven_window_heights) |
1942f68f | 3841 | /* Check that OTHER and WINDOW are vertically arrayed. */ |
949cf20f KS |
3842 | && !EQ (XWINDOW (other)->top_line, XWINDOW (window)->top_line) |
3843 | && (XFASTINT (XWINDOW (other)->total_lines) | |
3844 | > XFASTINT (XWINDOW (window)->total_lines))) | |
1942f68f | 3845 | { |
949cf20f KS |
3846 | int total = (XFASTINT (XWINDOW (other)->total_lines) |
3847 | + XFASTINT (XWINDOW (window)->total_lines)); | |
86c8e823 | 3848 | enlarge_window (upper, |
949cf20f | 3849 | total / 2 - XFASTINT (XWINDOW (upper)->total_lines), |
56ebfae2 | 3850 | 0); |
1942f68f | 3851 | } |
7ab12479 | 3852 | } |
90ab5c62 | 3853 | UNGCPRO; |
7ab12479 JB |
3854 | } |
3855 | else | |
3cbb13c8 | 3856 | window = Fget_lru_window (Qnil, Qnil); |
7ab12479 | 3857 | |
949cf20f | 3858 | Fset_window_buffer (window, buffer, Qnil); |
d07f802a | 3859 | return display_buffer_1 (window); |
7ab12479 JB |
3860 | } |
3861 | ||
e661376d KS |
3862 | |
3863 | DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update, | |
3864 | 0, 1, 0, | |
5a1048a5 | 3865 | doc: /* Force all windows to be updated on next redisplay. |
e661376d | 3866 | If optional arg OBJECT is a window, force redisplay of that window only. |
0cc1039f | 3867 | If OBJECT is a buffer or buffer name, force redisplay of all windows |
e661376d KS |
3868 | displaying that buffer. */) |
3869 | (object) | |
3870 | Lisp_Object object; | |
3871 | { | |
3872 | if (NILP (object)) | |
3873 | { | |
3874 | windows_or_buffers_changed++; | |
40c6ee74 | 3875 | update_mode_lines++; |
e661376d KS |
3876 | return Qt; |
3877 | } | |
3878 | ||
3879 | if (WINDOWP (object)) | |
3880 | { | |
40c6ee74 | 3881 | struct window *w = XWINDOW (object); |
e661376d | 3882 | mark_window_display_accurate (object, 0); |
40c6ee74 KS |
3883 | w->update_mode_line = Qt; |
3884 | if (BUFFERP (w->buffer)) | |
3885 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
3886 | ++update_mode_lines; | |
e661376d KS |
3887 | return Qt; |
3888 | } | |
0cc1039f | 3889 | |
e661376d KS |
3890 | if (STRINGP (object)) |
3891 | object = Fget_buffer (object); | |
3892 | if (BUFFERP (object) && !NILP (XBUFFER (object)->name)) | |
3893 | { | |
3894 | /* Walk all windows looking for buffer, and force update | |
3895 | of each of those windows. */ | |
3896 | ||
3897 | object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, 0, Qvisible); | |
3898 | return NILP (object) ? Qnil : Qt; | |
3899 | } | |
3900 | ||
3901 | /* If nothing suitable was found, just return. | |
3902 | We could signal an error, but this feature will typically be used | |
3903 | asynchronously in timers or process sentinels, so we don't. */ | |
3904 | return Qnil; | |
3905 | } | |
3906 | ||
3907 | ||
7ab12479 JB |
3908 | void |
3909 | temp_output_buffer_show (buf) | |
3910 | register Lisp_Object buf; | |
3911 | { | |
3912 | register struct buffer *old = current_buffer; | |
3913 | register Lisp_Object window; | |
3914 | register struct window *w; | |
3915 | ||
bccd3dd1 RS |
3916 | XBUFFER (buf)->directory = current_buffer->directory; |
3917 | ||
7ab12479 | 3918 | Fset_buffer (buf); |
c6367666 | 3919 | BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF; |
7ab12479 JB |
3920 | BEGV = BEG; |
3921 | ZV = Z; | |
3922 | SET_PT (BEG); | |
06be4f85 | 3923 | #if 0 /* rms: there should be no reason for this. */ |
b1599b4c | 3924 | XBUFFER (buf)->prevent_redisplay_optimizations_p = 1; |
06be4f85 | 3925 | #endif |
7ab12479 JB |
3926 | set_buffer_internal (old); |
3927 | ||
e67a1dea | 3928 | if (!NILP (Vtemp_buffer_show_function)) |
7ab12479 JB |
3929 | call1 (Vtemp_buffer_show_function, buf); |
3930 | else | |
3931 | { | |
53f76081 | 3932 | window = Fdisplay_buffer (buf, Qnil, Qnil); |
7ab12479 | 3933 | |
1ae1a37d | 3934 | if (!EQ (XWINDOW (window)->frame, selected_frame)) |
44fa5b1e | 3935 | Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); |
7ab12479 JB |
3936 | Vminibuf_scroll_window = window; |
3937 | w = XWINDOW (window); | |
d834a2e9 | 3938 | XSETFASTINT (w->hscroll, 0); |
ea68264b | 3939 | XSETFASTINT (w->min_hscroll, 0); |
2d0834cc SM |
3940 | set_marker_restricted_both (w->start, buf, BEG, BEG); |
3941 | set_marker_restricted_both (w->pointm, buf, BEG, BEG); | |
a58ec57d | 3942 | |
beb4e312 | 3943 | /* Run temp-buffer-show-hook, with the chosen window selected |
a5731348 | 3944 | and its buffer current. */ |
2d0834cc SM |
3945 | |
3946 | if (!NILP (Vrun_hooks) | |
3947 | && !NILP (Fboundp (Qtemp_buffer_show_hook)) | |
3948 | && !NILP (Fsymbol_value (Qtemp_buffer_show_hook))) | |
2cccc823 | 3949 | { |
2d0834cc SM |
3950 | int count = SPECPDL_INDEX (); |
3951 | Lisp_Object prev_window, prev_buffer; | |
3952 | prev_window = selected_window; | |
3953 | XSETBUFFER (prev_buffer, old); | |
0cc1039f | 3954 | |
2d0834cc SM |
3955 | /* Select the window that was chosen, for running the hook. |
3956 | Note: Both Fselect_window and select_window_norecord may | |
3957 | set-buffer to the buffer displayed in the window, | |
3958 | so we need to save the current buffer. --stef */ | |
3959 | record_unwind_protect (Fset_buffer, prev_buffer); | |
3960 | record_unwind_protect (select_window_norecord, prev_window); | |
3961 | Fselect_window (window, Qt); | |
3962 | Fset_buffer (w->buffer); | |
3963 | call1 (Vrun_hooks, Qtemp_buffer_show_hook); | |
3964 | unbind_to (count, Qnil); | |
2cccc823 RS |
3965 | } |
3966 | } | |
7ab12479 JB |
3967 | } |
3968 | \f | |
dfcf069d | 3969 | static void |
7ab12479 JB |
3970 | make_dummy_parent (window) |
3971 | Lisp_Object window; | |
3972 | { | |
cffec418 | 3973 | Lisp_Object new; |
7ab12479 | 3974 | register struct window *o, *p; |
cffec418 | 3975 | int i; |
7ab12479 | 3976 | |
cffec418 | 3977 | o = XWINDOW (window); |
26605be9 | 3978 | p = allocate_window (); |
cffec418 | 3979 | for (i = 0; i < VECSIZE (struct window); ++i) |
26605be9 GM |
3980 | ((struct Lisp_Vector *) p)->contents[i] |
3981 | = ((struct Lisp_Vector *)o)->contents[i]; | |
cffec418 | 3982 | XSETWINDOW (new, p); |
7ab12479 | 3983 | |
2a1893f4 SM |
3984 | ++sequence_number; |
3985 | XSETFASTINT (p->sequence_number, sequence_number); | |
7ab12479 JB |
3986 | |
3987 | /* Put new into window structure in place of window */ | |
3988 | replace_window (window, new); | |
3989 | ||
3990 | o->next = Qnil; | |
3991 | o->prev = Qnil; | |
3992 | o->vchild = Qnil; | |
3993 | o->hchild = Qnil; | |
3994 | o->parent = new; | |
3995 | ||
3996 | p->start = Qnil; | |
3997 | p->pointm = Qnil; | |
3998 | p->buffer = Qnil; | |
3999 | } | |
4000 | ||
4001 | DEFUN ("split-window", Fsplit_window, Ssplit_window, 0, 3, "", | |
fdb82f93 PJ |
4002 | doc: /* Split WINDOW, putting SIZE lines in the first of the pair. |
4003 | WINDOW defaults to selected one and SIZE to half its size. | |
4004 | If optional third arg HORFLAG is non-nil, split side by side | |
4005 | and put SIZE columns in the first of the pair. In that case, | |
876e2665 | 4006 | SIZE includes that window's scroll bar, or the divider column to its right. |
c2755926 LT |
4007 | Interactively, all arguments are nil. |
4008 | ||
4009 | Returns the newly created window (which is the lower or rightmost one). | |
19ca94ce RS |
4010 | The upper or leftmost window is the original one, and remains selected |
4011 | if it was selected before. | |
4012 | ||
c2755926 | 4013 | See Info node `(elisp)Splitting Windows' for more details and examples.*/) |
fdb82f93 | 4014 | (window, size, horflag) |
77ae0fe3 | 4015 | Lisp_Object window, size, horflag; |
7ab12479 JB |
4016 | { |
4017 | register Lisp_Object new; | |
4018 | register struct window *o, *p; | |
c0807608 | 4019 | FRAME_PTR fo; |
77ae0fe3 | 4020 | register int size_int; |
7ab12479 | 4021 | |
265a9e55 | 4022 | if (NILP (window)) |
7ab12479 JB |
4023 | window = selected_window; |
4024 | else | |
b7826503 | 4025 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
4026 | |
4027 | o = XWINDOW (window); | |
c0807608 | 4028 | fo = XFRAME (WINDOW_FRAME (o)); |
7ab12479 | 4029 | |
77ae0fe3 | 4030 | if (NILP (size)) |
7ab12479 | 4031 | { |
265a9e55 | 4032 | if (!NILP (horflag)) |
c0807608 | 4033 | /* Calculate the size of the left-hand window, by dividing |
25b33244 KH |
4034 | the usable space in columns by two. |
4035 | We round up, since the left-hand window may include | |
4036 | a dividing line, while the right-hand may not. */ | |
949cf20f | 4037 | size_int = (XFASTINT (o->total_cols) + 1) >> 1; |
7ab12479 | 4038 | else |
949cf20f | 4039 | size_int = XFASTINT (o->total_lines) >> 1; |
7ab12479 JB |
4040 | } |
4041 | else | |
4042 | { | |
b7826503 | 4043 | CHECK_NUMBER (size); |
77ae0fe3 | 4044 | size_int = XINT (size); |
7ab12479 JB |
4045 | } |
4046 | ||
4047 | if (MINI_WINDOW_P (o)) | |
4048 | error ("Attempt to split minibuffer window"); | |
233a4a2c GM |
4049 | else if (window_fixed_size_p (o, !NILP (horflag), 0)) |
4050 | error ("Attempt to split fixed-size window"); | |
7ab12479 | 4051 | |
a481b3ea | 4052 | check_min_window_sizes (); |
7ab12479 | 4053 | |
265a9e55 | 4054 | if (NILP (horflag)) |
7ab12479 | 4055 | { |
f1de8c77 MR |
4056 | int window_safe_height = window_min_size_2 (o, 0); |
4057 | ||
4058 | if (size_int < window_safe_height) | |
77ae0fe3 | 4059 | error ("Window height %d too small (after splitting)", size_int); |
f1de8c77 | 4060 | if (size_int + window_safe_height > XFASTINT (o->total_lines)) |
37962e60 | 4061 | error ("Window height %d too small (after splitting)", |
949cf20f | 4062 | XFASTINT (o->total_lines) - size_int); |
265a9e55 JB |
4063 | if (NILP (o->parent) |
4064 | || NILP (XWINDOW (o->parent)->vchild)) | |
7ab12479 JB |
4065 | { |
4066 | make_dummy_parent (window); | |
4067 | new = o->parent; | |
4068 | XWINDOW (new)->vchild = window; | |
4069 | } | |
4070 | } | |
4071 | else | |
4072 | { | |
f1de8c77 MR |
4073 | int window_safe_width = window_min_size_2 (o, 1); |
4074 | ||
4075 | if (size_int < window_safe_width) | |
77ae0fe3 | 4076 | error ("Window width %d too small (after splitting)", size_int); |
f1de8c77 | 4077 | if (size_int + window_safe_width > XFASTINT (o->total_cols)) |
37962e60 | 4078 | error ("Window width %d too small (after splitting)", |
949cf20f | 4079 | XFASTINT (o->total_cols) - size_int); |
265a9e55 JB |
4080 | if (NILP (o->parent) |
4081 | || NILP (XWINDOW (o->parent)->hchild)) | |
7ab12479 JB |
4082 | { |
4083 | make_dummy_parent (window); | |
4084 | new = o->parent; | |
4085 | XWINDOW (new)->hchild = window; | |
4086 | } | |
4087 | } | |
4088 | ||
4089 | /* Now we know that window's parent is a vertical combination | |
4090 | if we are dividing vertically, or a horizontal combination | |
4091 | if we are making side-by-side windows */ | |
4092 | ||
4093 | windows_or_buffers_changed++; | |
c0807608 | 4094 | FRAME_WINDOW_SIZES_CHANGED (fo) = 1; |
7ab12479 JB |
4095 | new = make_window (); |
4096 | p = XWINDOW (new); | |
4097 | ||
44fa5b1e | 4098 | p->frame = o->frame; |
7ab12479 | 4099 | p->next = o->next; |
265a9e55 | 4100 | if (!NILP (p->next)) |
7ab12479 JB |
4101 | XWINDOW (p->next)->prev = new; |
4102 | p->prev = window; | |
4103 | o->next = new; | |
4104 | p->parent = o->parent; | |
4105 | p->buffer = Qt; | |
5500c422 GM |
4106 | p->window_end_valid = Qnil; |
4107 | bzero (&p->last_cursor, sizeof p->last_cursor); | |
7ab12479 | 4108 | |
949cf20f KS |
4109 | /* Duplicate special geometry settings. */ |
4110 | ||
4111 | p->left_margin_cols = o->left_margin_cols; | |
4112 | p->right_margin_cols = o->right_margin_cols; | |
4113 | p->left_fringe_width = o->left_fringe_width; | |
4114 | p->right_fringe_width = o->right_fringe_width; | |
4115 | p->fringes_outside_margins = o->fringes_outside_margins; | |
4116 | p->scroll_bar_width = o->scroll_bar_width; | |
4117 | p->vertical_scroll_bar_type = o->vertical_scroll_bar_type; | |
4118 | ||
44fa5b1e | 4119 | /* Apportion the available frame space among the two new windows */ |
7ab12479 | 4120 | |
265a9e55 | 4121 | if (!NILP (horflag)) |
7ab12479 | 4122 | { |
949cf20f KS |
4123 | p->total_lines = o->total_lines; |
4124 | p->top_line = o->top_line; | |
4125 | XSETFASTINT (p->total_cols, XFASTINT (o->total_cols) - size_int); | |
4126 | XSETFASTINT (o->total_cols, size_int); | |
4127 | XSETFASTINT (p->left_col, XFASTINT (o->left_col) + size_int); | |
4128 | adjust_window_margins (p); | |
4129 | adjust_window_margins (o); | |
7ab12479 JB |
4130 | } |
4131 | else | |
4132 | { | |
949cf20f KS |
4133 | p->left_col = o->left_col; |
4134 | p->total_cols = o->total_cols; | |
4135 | XSETFASTINT (p->total_lines, XFASTINT (o->total_lines) - size_int); | |
4136 | XSETFASTINT (o->total_lines, size_int); | |
4137 | XSETFASTINT (p->top_line, XFASTINT (o->top_line) + size_int); | |
7ab12479 JB |
4138 | } |
4139 | ||
5500c422 GM |
4140 | /* Adjust glyph matrices. */ |
4141 | adjust_glyphs (fo); | |
949cf20f KS |
4142 | |
4143 | Fset_window_buffer (new, o->buffer, Qt); | |
7ab12479 JB |
4144 | return new; |
4145 | } | |
4146 | \f | |
56ebfae2 | 4147 | DEFUN ("enlarge-window", Fenlarge_window, Senlarge_window, 1, 2, "p", |
fdb82f93 PJ |
4148 | doc: /* Make current window ARG lines bigger. |
4149 | From program, optional second arg non-nil means grow sideways ARG columns. | |
f95284d2 | 4150 | Interactively, if an argument is not given, make the window one line bigger. |
5afc696a | 4151 | If HORIZONTAL is non-nil, enlarge horizontally instead of vertically. |
56ebfae2 RS |
4152 | This function can delete windows, even the second window, if they get |
4153 | too small. */) | |
4154 | (arg, horizontal) | |
4155 | Lisp_Object arg, horizontal; | |
7ab12479 | 4156 | { |
b7826503 | 4157 | CHECK_NUMBER (arg); |
56ebfae2 | 4158 | enlarge_window (selected_window, XINT (arg), !NILP (horizontal)); |
543f5fb1 RS |
4159 | |
4160 | if (! NILP (Vwindow_configuration_change_hook)) | |
4161 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
4162 | ||
7ab12479 JB |
4163 | return Qnil; |
4164 | } | |
4165 | ||
56ebfae2 | 4166 | DEFUN ("shrink-window", Fshrink_window, Sshrink_window, 1, 2, "p", |
fdb82f93 PJ |
4167 | doc: /* Make current window ARG lines smaller. |
4168 | From program, optional second arg non-nil means shrink sideways arg columns. | |
4797b6d9 JB |
4169 | Interactively, if an argument is not given, make the window one line smaller. |
4170 | Only siblings to the right or below are changed. */) | |
56ebfae2 RS |
4171 | (arg, side) |
4172 | Lisp_Object arg, side; | |
7ab12479 | 4173 | { |
b7826503 | 4174 | CHECK_NUMBER (arg); |
56ebfae2 | 4175 | enlarge_window (selected_window, -XINT (arg), !NILP (side)); |
543f5fb1 RS |
4176 | |
4177 | if (! NILP (Vwindow_configuration_change_hook)) | |
4178 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
4179 | ||
7ab12479 JB |
4180 | return Qnil; |
4181 | } | |
4182 | ||
4183 | int | |
4184 | window_height (window) | |
4185 | Lisp_Object window; | |
4186 | { | |
4187 | register struct window *p = XWINDOW (window); | |
949cf20f | 4188 | return WINDOW_TOTAL_LINES (p); |
7ab12479 JB |
4189 | } |
4190 | ||
4191 | int | |
4192 | window_width (window) | |
4193 | Lisp_Object window; | |
4194 | { | |
4195 | register struct window *p = XWINDOW (window); | |
949cf20f | 4196 | return WINDOW_TOTAL_COLS (p); |
7ab12479 JB |
4197 | } |
4198 | ||
177c0ea7 | 4199 | |
7ab12479 | 4200 | #define CURBEG(w) \ |
5afc696a | 4201 | *(horiz_flag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line)) |
7ab12479 JB |
4202 | |
4203 | #define CURSIZE(w) \ | |
5afc696a RS |
4204 | *(horiz_flag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines)) |
4205 | ||
7ab12479 | 4206 | |
5afc696a RS |
4207 | /* Enlarge WINDOW by DELTA. |
4208 | HORIZ_FLAG nonzero means enlarge it horizontally; | |
4209 | zero means do it vertically. | |
233a4a2c | 4210 | |
5afc696a RS |
4211 | Siblings of the selected window are resized to fulfill the size |
4212 | request. If they become too small in the process, they will be | |
56ebfae2 | 4213 | deleted. */ |
7ab12479 | 4214 | |
f984d4fc | 4215 | static void |
56ebfae2 | 4216 | enlarge_window (window, delta, horiz_flag) |
86c8e823 | 4217 | Lisp_Object window; |
56ebfae2 | 4218 | int delta, horiz_flag; |
7ab12479 | 4219 | { |
86c8e823 | 4220 | Lisp_Object parent, next, prev; |
233a4a2c | 4221 | struct window *p; |
3578db3c KR |
4222 | Lisp_Object *sizep; |
4223 | int maximum; | |
5e14b1fc | 4224 | int (*sizefun) P_ ((Lisp_Object)) |
5afc696a | 4225 | = horiz_flag ? window_width : window_height; |
233a4a2c | 4226 | void (*setsizefun) P_ ((Lisp_Object, int, int)) |
5afc696a | 4227 | = (horiz_flag ? set_window_width : set_window_height); |
7ab12479 | 4228 | |
233a4a2c GM |
4229 | /* Check values of window_min_width and window_min_height for |
4230 | validity. */ | |
a481b3ea | 4231 | check_min_window_sizes (); |
7ab12479 | 4232 | |
233a4a2c | 4233 | /* Give up if this window cannot be resized. */ |
5afc696a | 4234 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) |
233a4a2c GM |
4235 | error ("Window is not resizable"); |
4236 | ||
4237 | /* Find the parent of the selected window. */ | |
7ab12479 JB |
4238 | while (1) |
4239 | { | |
4240 | p = XWINDOW (window); | |
4241 | parent = p->parent; | |
177c0ea7 | 4242 | |
265a9e55 | 4243 | if (NILP (parent)) |
7ab12479 | 4244 | { |
5afc696a | 4245 | if (horiz_flag) |
7ab12479 JB |
4246 | error ("No other window to side of this one"); |
4247 | break; | |
4248 | } | |
177c0ea7 | 4249 | |
5afc696a | 4250 | if (horiz_flag |
233a4a2c | 4251 | ? !NILP (XWINDOW (parent)->hchild) |
265a9e55 | 4252 | : !NILP (XWINDOW (parent)->vchild)) |
7ab12479 | 4253 | break; |
177c0ea7 | 4254 | |
7ab12479 JB |
4255 | window = parent; |
4256 | } | |
4257 | ||
05c2896a | 4258 | sizep = &CURSIZE (window); |
7ab12479 | 4259 | |
7ab12479 JB |
4260 | { |
4261 | register int maxdelta; | |
7ab12479 | 4262 | |
f95284d2 RS |
4263 | /* Compute the maximum size increment this window can have. */ |
4264 | ||
56ebfae2 RS |
4265 | maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep) |
4266 | /* This is a main window followed by a minibuffer. */ | |
4267 | : !NILP (p->next) ? ((*sizefun) (p->next) | |
4268 | - window_min_size (XWINDOW (p->next), | |
4269 | horiz_flag, 0, 0)) | |
4270 | /* This is a minibuffer following a main window. */ | |
4271 | : !NILP (p->prev) ? ((*sizefun) (p->prev) | |
4272 | - window_min_size (XWINDOW (p->prev), | |
4273 | horiz_flag, 0, 0)) | |
4274 | /* This is a frame with only one window, a minibuffer-only | |
4275 | or a minibufferless frame. */ | |
4276 | : (delta = 0)); | |
7ab12479 JB |
4277 | |
4278 | if (delta > maxdelta) | |
4279 | /* This case traps trying to make the minibuffer | |
44fa5b1e JB |
4280 | the full frame, or make the only window aside from the |
4281 | minibuffer the full frame. */ | |
7ab12479 | 4282 | delta = maxdelta; |
6b54027b | 4283 | } |
d5783c40 | 4284 | |
5afc696a | 4285 | if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), horiz_flag, 0, 0)) |
6b54027b | 4286 | { |
543f5fb1 | 4287 | delete_window (window); |
d5783c40 | 4288 | return; |
6b54027b RS |
4289 | } |
4290 | ||
4291 | if (delta == 0) | |
4292 | return; | |
7ab12479 | 4293 | |
f95284d2 | 4294 | /* Find the total we can get from other siblings without deleting them. */ |
db98a733 | 4295 | maximum = 0; |
9beb8baa | 4296 | for (next = p->next; WINDOWP (next); next = XWINDOW (next)->next) |
c1636aa6 | 4297 | maximum += (*sizefun) (next) - window_min_size (XWINDOW (next), |
5afc696a | 4298 | horiz_flag, 0, 0); |
9beb8baa | 4299 | for (prev = p->prev; WINDOWP (prev); prev = XWINDOW (prev)->prev) |
56ebfae2 RS |
4300 | maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev), |
4301 | horiz_flag, 0, 0); | |
db98a733 | 4302 | |
f95284d2 | 4303 | /* If we can get it all from them without deleting them, do so. */ |
c6b530ed | 4304 | if (delta <= maximum) |
7ab12479 | 4305 | { |
db98a733 RS |
4306 | Lisp_Object first_unaffected; |
4307 | Lisp_Object first_affected; | |
233a4a2c | 4308 | int fixed_p; |
db98a733 RS |
4309 | |
4310 | next = p->next; | |
4311 | prev = p->prev; | |
4312 | first_affected = window; | |
4313 | /* Look at one sibling at a time, | |
4314 | moving away from this window in both directions alternately, | |
4315 | and take as much as we can get without deleting that sibling. */ | |
f95284d2 | 4316 | while (delta != 0 |
56ebfae2 | 4317 | && (!NILP (next) || !NILP (prev))) |
db98a733 | 4318 | { |
db98a733 RS |
4319 | if (! NILP (next)) |
4320 | { | |
c1636aa6 | 4321 | int this_one = ((*sizefun) (next) |
233a4a2c | 4322 | - window_min_size (XWINDOW (next), |
5afc696a | 4323 | horiz_flag, 0, &fixed_p)); |
233a4a2c GM |
4324 | if (!fixed_p) |
4325 | { | |
4326 | if (this_one > delta) | |
4327 | this_one = delta; | |
177c0ea7 | 4328 | |
233a4a2c | 4329 | (*setsizefun) (next, (*sizefun) (next) - this_one, 0); |
3578db3c | 4330 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
db98a733 | 4331 | |
233a4a2c GM |
4332 | delta -= this_one; |
4333 | } | |
177c0ea7 | 4334 | |
db98a733 RS |
4335 | next = XWINDOW (next)->next; |
4336 | } | |
177c0ea7 | 4337 | |
db98a733 RS |
4338 | if (delta == 0) |
4339 | break; | |
177c0ea7 | 4340 | |
56ebfae2 | 4341 | if (! NILP (prev)) |
db98a733 | 4342 | { |
c1636aa6 | 4343 | int this_one = ((*sizefun) (prev) |
233a4a2c | 4344 | - window_min_size (XWINDOW (prev), |
5afc696a | 4345 | horiz_flag, 0, &fixed_p)); |
233a4a2c GM |
4346 | if (!fixed_p) |
4347 | { | |
4348 | if (this_one > delta) | |
4349 | this_one = delta; | |
177c0ea7 | 4350 | |
233a4a2c | 4351 | first_affected = prev; |
177c0ea7 | 4352 | |
233a4a2c | 4353 | (*setsizefun) (prev, (*sizefun) (prev) - this_one, 0); |
3578db3c | 4354 | (*setsizefun) (window, XINT (*sizep) + this_one, 0); |
233a4a2c GM |
4355 | |
4356 | delta -= this_one; | |
4357 | } | |
177c0ea7 | 4358 | |
db98a733 RS |
4359 | prev = XWINDOW (prev)->prev; |
4360 | } | |
4361 | } | |
4362 | ||
233a4a2c GM |
4363 | xassert (delta == 0); |
4364 | ||
db98a733 RS |
4365 | /* Now recalculate the edge positions of all the windows affected, |
4366 | based on the new sizes. */ | |
4367 | first_unaffected = next; | |
4368 | prev = first_affected; | |
4369 | for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected); | |
4370 | prev = next, next = XWINDOW (next)->next) | |
4371 | { | |
3578db3c | 4372 | XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev)); |
db98a733 RS |
4373 | /* This does not change size of NEXT, |
4374 | but it propagates the new top edge to its children */ | |
4375 | (*setsizefun) (next, (*sizefun) (next), 0); | |
4376 | } | |
7ab12479 JB |
4377 | } |
4378 | else | |
4379 | { | |
4380 | register int delta1; | |
4381 | register int opht = (*sizefun) (parent); | |
4382 | ||
3578db3c | 4383 | if (opht <= XINT (*sizep) + delta) |
daf516d3 RS |
4384 | { |
4385 | /* If trying to grow this window to or beyond size of the parent, | |
4386 | just delete all the sibling windows. */ | |
dc1ab1ee | 4387 | Lisp_Object start, tem, next; |
daf516d3 | 4388 | |
dc1ab1ee RS |
4389 | start = XWINDOW (parent)->vchild; |
4390 | if (NILP (start)) | |
4391 | start = XWINDOW (parent)->hchild; | |
daf516d3 | 4392 | |
dc1ab1ee RS |
4393 | /* Delete any siblings that come after WINDOW. */ |
4394 | tem = XWINDOW (window)->next; | |
daf516d3 RS |
4395 | while (! NILP (tem)) |
4396 | { | |
4397 | next = XWINDOW (tem)->next; | |
dc1ab1ee RS |
4398 | delete_window (tem); |
4399 | tem = next; | |
4400 | } | |
4401 | ||
4402 | /* Delete any siblings that come after WINDOW. | |
4403 | Note that if START is not WINDOW, then WINDOW still | |
4404 | Fhas siblings, so WINDOW has not yet replaced its parent. */ | |
4405 | tem = start; | |
4406 | while (! EQ (tem, window)) | |
4407 | { | |
4408 | next = XWINDOW (tem)->next; | |
4409 | delete_window (tem); | |
daf516d3 RS |
4410 | tem = next; |
4411 | } | |
4412 | } | |
7ab12479 | 4413 | else |
233a4a2c GM |
4414 | { |
4415 | /* Otherwise, make delta1 just right so that if we add | |
4416 | delta1 lines to this window and to the parent, and then | |
4417 | shrink the parent back to its original size, the new | |
4418 | proportional size of this window will increase by delta. | |
4419 | ||
4420 | The function size_window will compute the new height h' | |
4421 | of the window from delta1 as: | |
177c0ea7 | 4422 | |
233a4a2c GM |
4423 | e = delta1/n |
4424 | x = delta1 - delta1/n * n for the 1st resizable child | |
4425 | h' = h + e + x | |
4426 | ||
4427 | where n is the number of children that can be resized. | |
4428 | We can ignore x by choosing a delta1 that is a multiple of | |
4429 | n. We want the height of this window to come out as | |
177c0ea7 | 4430 | |
233a4a2c GM |
4431 | h' = h + delta |
4432 | ||
4433 | So, delta1 must be | |
177c0ea7 | 4434 | |
233a4a2c GM |
4435 | h + e = h + delta |
4436 | delta1/n = delta | |
4437 | delta1 = n * delta. | |
4438 | ||
a5731348 | 4439 | The number of children n equals the number of resizable |
233a4a2c | 4440 | children of this window + 1 because we know window itself |
6e0dca3d | 4441 | is resizable (otherwise we would have signalled an error). */ |
233a4a2c GM |
4442 | |
4443 | struct window *w = XWINDOW (window); | |
4444 | Lisp_Object s; | |
4445 | int n = 1; | |
4446 | ||
9beb8baa | 4447 | for (s = w->next; WINDOWP (s); s = XWINDOW (s)->next) |
5afc696a | 4448 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c | 4449 | ++n; |
9beb8baa | 4450 | for (s = w->prev; WINDOWP (s); s = XWINDOW (s)->prev) |
5afc696a | 4451 | if (!window_fixed_size_p (XWINDOW (s), horiz_flag, 0)) |
233a4a2c GM |
4452 | ++n; |
4453 | ||
4454 | delta1 = n * delta; | |
7ab12479 | 4455 | |
daf516d3 RS |
4456 | /* Add delta1 lines or columns to this window, and to the parent, |
4457 | keeping things consistent while not affecting siblings. */ | |
4458 | XSETINT (CURSIZE (parent), opht + delta1); | |
4459 | (*setsizefun) (window, XINT (*sizep) + delta1, 0); | |
4460 | ||
4461 | /* Squeeze out delta1 lines or columns from our parent, | |
4462 | shriking this window and siblings proportionately. | |
4463 | This brings parent back to correct size. | |
4464 | Delta1 was calculated so this makes this window the desired size, | |
4465 | taking it all out of the siblings. */ | |
4466 | (*setsizefun) (parent, opht, 0); | |
4467 | ||
4468 | } | |
7ab12479 JB |
4469 | } |
4470 | ||
d834a2e9 | 4471 | XSETFASTINT (p->last_modified, 0); |
3cd21523 | 4472 | XSETFASTINT (p->last_overlay_modified, 0); |
5500c422 GM |
4473 | |
4474 | /* Adjust glyph matrices. */ | |
4475 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
7ab12479 | 4476 | } |
c1636aa6 | 4477 | |
0d384044 RS |
4478 | |
4479 | /* Adjust the size of WINDOW by DELTA, moving only its trailing edge. | |
4480 | HORIZ_FLAG nonzero means adjust the width, moving the right edge. | |
4481 | zero means adjust the height, moving the bottom edge. | |
4482 | ||
4483 | Following siblings of the selected window are resized to fulfill | |
4484 | the size request. If they become too small in the process, they | |
4485 | are not deleted; instead, we signal an error. */ | |
4486 | ||
4487 | static void | |
4488 | adjust_window_trailing_edge (window, delta, horiz_flag) | |
4489 | Lisp_Object window; | |
4490 | int delta, horiz_flag; | |
4491 | { | |
4492 | Lisp_Object parent, child; | |
4493 | struct window *p; | |
4494 | Lisp_Object old_config = Fcurrent_window_configuration (Qnil); | |
4495 | int delcount = window_deletion_count; | |
4496 | ||
4497 | /* Check values of window_min_width and window_min_height for | |
4498 | validity. */ | |
4499 | check_min_window_sizes (); | |
4500 | ||
4501 | if (NILP (window)) | |
4502 | window = Fselected_window (); | |
4503 | ||
4504 | CHECK_WINDOW (window); | |
4505 | ||
4506 | /* Give up if this window cannot be resized. */ | |
4507 | if (window_fixed_size_p (XWINDOW (window), horiz_flag, 1)) | |
4508 | error ("Window is not resizable"); | |
4509 | ||
4510 | while (1) | |
4511 | { | |
bd99e242 RS |
4512 | Lisp_Object first_parallel = Qnil; |
4513 | ||
c32de52a | 4514 | if (NILP (window)) |
0d384044 | 4515 | { |
5fe0b054 RS |
4516 | /* This happens if WINDOW on the previous iteration was |
4517 | at top level of the window tree. */ | |
0d384044 | 4518 | Fset_window_configuration (old_config); |
c32de52a | 4519 | error ("Specified window edge is fixed"); |
0d384044 RS |
4520 | } |
4521 | ||
c32de52a RS |
4522 | p = XWINDOW (window); |
4523 | parent = p->parent; | |
4524 | ||
bd99e242 RS |
4525 | /* See if this level has windows in parallel in the specified |
4526 | direction. If so, set FIRST_PARALLEL to the first one. */ | |
4527 | if (horiz_flag) | |
4528 | { | |
4529 | if (! NILP (parent) && !NILP (XWINDOW (parent)->vchild)) | |
4530 | first_parallel = XWINDOW (parent)->vchild; | |
5fe0b054 RS |
4531 | else if (NILP (parent) && !NILP (p->next)) |
4532 | { | |
4533 | /* Handle the vertical chain of main window and minibuffer | |
4534 | which has no parent. */ | |
4535 | first_parallel = window; | |
4536 | while (! NILP (XWINDOW (first_parallel)->prev)) | |
4537 | first_parallel = XWINDOW (first_parallel)->prev; | |
4538 | } | |
bd99e242 RS |
4539 | } |
4540 | else | |
4541 | { | |
4542 | if (! NILP (parent) && !NILP (XWINDOW (parent)->hchild)) | |
4543 | first_parallel = XWINDOW (parent)->hchild; | |
4544 | } | |
4545 | ||
c32de52a | 4546 | /* If this level's succession is in the desired dimension, |
5fe0b054 RS |
4547 | and this window is the last one, and there is no higher level, |
4548 | its trailing edge is fixed. */ | |
4549 | if (NILP (XWINDOW (window)->next) && NILP (first_parallel) | |
4550 | && NILP (parent)) | |
c32de52a RS |
4551 | { |
4552 | Fset_window_configuration (old_config); | |
4553 | error ("Specified window edge is fixed"); | |
4554 | } | |
4555 | ||
0d384044 RS |
4556 | /* Don't make this window too small. */ |
4557 | if (XINT (CURSIZE (window)) + delta | |
f1de8c77 | 4558 | < window_min_size_2 (XWINDOW (window), horiz_flag)) |
0d384044 RS |
4559 | { |
4560 | Fset_window_configuration (old_config); | |
4561 | error ("Cannot adjust window size as specified"); | |
4562 | } | |
4563 | ||
4564 | /* Clear out some redisplay caches. */ | |
4565 | XSETFASTINT (p->last_modified, 0); | |
4566 | XSETFASTINT (p->last_overlay_modified, 0); | |
4567 | ||
4568 | /* Adjust this window's edge. */ | |
4569 | XSETINT (CURSIZE (window), | |
4570 | XINT (CURSIZE (window)) + delta); | |
4571 | ||
4572 | /* If this window has following siblings in the desired dimension, | |
bd99e242 RS |
4573 | make them smaller, and exit the loop. |
4574 | ||
0d384044 RS |
4575 | (If we reach the top of the tree and can never do this, |
4576 | we will fail and report an error, above.) */ | |
bd99e242 | 4577 | if (NILP (first_parallel)) |
0d384044 | 4578 | { |
c32de52a | 4579 | if (!NILP (p->next)) |
0d384044 | 4580 | { |
e99c7521 JD |
4581 | /* This may happen for the minibuffer. In that case |
4582 | the window_deletion_count check below does not work. */ | |
a53d44a8 | 4583 | if (XINT (CURSIZE (p->next)) - delta <= 0) |
e99c7521 JD |
4584 | { |
4585 | Fset_window_configuration (old_config); | |
4586 | error ("Cannot adjust window size as specified"); | |
4587 | } | |
4588 | ||
0d384044 RS |
4589 | XSETINT (CURBEG (p->next), |
4590 | XINT (CURBEG (p->next)) + delta); | |
4591 | size_window (p->next, XINT (CURSIZE (p->next)) - delta, | |
5fe0b054 | 4592 | horiz_flag, 0, 1, 0); |
0d384044 RS |
4593 | break; |
4594 | } | |
4595 | } | |
4596 | else | |
4597 | /* Here we have a chain of parallel siblings, in the other dimension. | |
4598 | Change the size of the other siblings. */ | |
bd99e242 | 4599 | for (child = first_parallel; |
0d384044 RS |
4600 | ! NILP (child); |
4601 | child = XWINDOW (child)->next) | |
4602 | if (! EQ (child, window)) | |
4603 | size_window (child, XINT (CURSIZE (child)) + delta, | |
5fe0b054 | 4604 | horiz_flag, 0, 0, 1); |
0d384044 RS |
4605 | |
4606 | window = parent; | |
4607 | } | |
4608 | ||
4609 | /* If we made a window so small it got deleted, | |
4610 | we failed. Report failure. */ | |
4611 | if (delcount != window_deletion_count) | |
4612 | { | |
4613 | Fset_window_configuration (old_config); | |
4614 | error ("Cannot adjust window size as specified"); | |
4615 | } | |
4616 | ||
4617 | /* Adjust glyph matrices. */ | |
4618 | adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
4619 | } | |
4620 | ||
7ab12479 JB |
4621 | #undef CURBEG |
4622 | #undef CURSIZE | |
4623 | ||
0d384044 RS |
4624 | DEFUN ("adjust-window-trailing-edge", Fadjust_window_trailing_edge, |
4625 | Sadjust_window_trailing_edge, 3, 3, 0, | |
4626 | doc: /* Adjust the bottom or right edge of WINDOW by DELTA. | |
56ebfae2 | 4627 | If HORIZONTAL is non-nil, that means adjust the width, moving the right edge. |
0d384044 RS |
4628 | Otherwise, adjust the height, moving the bottom edge. |
4629 | ||
4630 | Following siblings of the selected window are resized to fulfill | |
4631 | the size request. If they become too small in the process, they | |
4632 | are not deleted; instead, we signal an error. */) | |
4633 | (window, delta, horizontal) | |
4634 | Lisp_Object window, delta, horizontal; | |
4635 | { | |
4636 | CHECK_NUMBER (delta); | |
4637 | adjust_window_trailing_edge (window, XINT (delta), !NILP (horizontal)); | |
4638 | ||
4639 | if (! NILP (Vwindow_configuration_change_hook)) | |
4640 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
4641 | ||
4642 | return Qnil; | |
4643 | } | |
4644 | ||
5500c422 | 4645 | |
f984d4fc GM |
4646 | \f |
4647 | /*********************************************************************** | |
4648 | Resizing Mini-Windows | |
4649 | ***********************************************************************/ | |
4650 | ||
4651 | static void shrink_window_lowest_first P_ ((struct window *, int)); | |
f984d4fc | 4652 | |
43b4a21f GM |
4653 | enum save_restore_action |
4654 | { | |
4655 | CHECK_ORIG_SIZES, | |
4656 | SAVE_ORIG_SIZES, | |
4657 | RESTORE_ORIG_SIZES | |
4658 | }; | |
4659 | ||
177c0ea7 | 4660 | static int save_restore_orig_size P_ ((struct window *, |
43b4a21f | 4661 | enum save_restore_action)); |
f984d4fc GM |
4662 | |
4663 | /* Shrink windows rooted in window W to HEIGHT. Take the space needed | |
4664 | from lowest windows first. */ | |
4665 | ||
4666 | static void | |
4667 | shrink_window_lowest_first (w, height) | |
4668 | struct window *w; | |
4669 | int height; | |
4670 | { | |
4671 | struct window *c; | |
4672 | Lisp_Object child; | |
4673 | int old_height; | |
4674 | ||
4675 | xassert (!MINI_WINDOW_P (w)); | |
4676 | ||
4677 | /* Set redisplay hints. */ | |
4678 | XSETFASTINT (w->last_modified, 0); | |
4679 | XSETFASTINT (w->last_overlay_modified, 0); | |
4680 | windows_or_buffers_changed++; | |
4681 | FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1; | |
4682 | ||
949cf20f KS |
4683 | old_height = XFASTINT (w->total_lines); |
4684 | XSETFASTINT (w->total_lines, height); | |
f984d4fc GM |
4685 | |
4686 | if (!NILP (w->hchild)) | |
4687 | { | |
4688 | for (child = w->hchild; !NILP (child); child = c->next) | |
4689 | { | |
4690 | c = XWINDOW (child); | |
949cf20f | 4691 | c->top_line = w->top_line; |
f984d4fc GM |
4692 | shrink_window_lowest_first (c, height); |
4693 | } | |
4694 | } | |
4695 | else if (!NILP (w->vchild)) | |
4696 | { | |
4697 | Lisp_Object last_child; | |
4698 | int delta = old_height - height; | |
4699 | int last_top; | |
6bbd7a29 GM |
4700 | |
4701 | last_child = Qnil; | |
177c0ea7 | 4702 | |
f984d4fc GM |
4703 | /* Find the last child. We are taking space from lowest windows |
4704 | first, so we iterate over children from the last child | |
4705 | backwards. */ | |
9beb8baa | 4706 | for (child = w->vchild; WINDOWP (child); child = XWINDOW (child)->next) |
f984d4fc GM |
4707 | last_child = child; |
4708 | ||
4709 | /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */ | |
4710 | for (child = last_child; delta && !NILP (child); child = c->prev) | |
4711 | { | |
4712 | int this_one; | |
177c0ea7 | 4713 | |
f984d4fc | 4714 | c = XWINDOW (child); |
949cf20f | 4715 | this_one = XFASTINT (c->total_lines) - MIN_SAFE_WINDOW_HEIGHT; |
f984d4fc GM |
4716 | |
4717 | if (this_one > delta) | |
4718 | this_one = delta; | |
4719 | ||
949cf20f | 4720 | shrink_window_lowest_first (c, XFASTINT (c->total_lines) - this_one); |
f984d4fc GM |
4721 | delta -= this_one; |
4722 | } | |
4723 | ||
4724 | /* Compute new positions. */ | |
949cf20f | 4725 | last_top = XINT (w->top_line); |
f984d4fc GM |
4726 | for (child = w->vchild; !NILP (child); child = c->next) |
4727 | { | |
4728 | c = XWINDOW (child); | |
949cf20f KS |
4729 | c->top_line = make_number (last_top); |
4730 | shrink_window_lowest_first (c, XFASTINT (c->total_lines)); | |
4731 | last_top += XFASTINT (c->total_lines); | |
f984d4fc GM |
4732 | } |
4733 | } | |
4734 | } | |
4735 | ||
4736 | ||
43b4a21f GM |
4737 | /* Save, restore, or check positions and sizes in the window tree |
4738 | rooted at W. ACTION says what to do. | |
f984d4fc | 4739 | |
949cf20f KS |
4740 | If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and |
4741 | orig_total_lines members are valid for all windows in the window | |
4742 | tree. Value is non-zero if they are valid. | |
177c0ea7 | 4743 | |
43b4a21f | 4744 | If ACTION is SAVE_ORIG_SIZES, save members top and height in |
949cf20f | 4745 | orig_top_line and orig_total_lines for all windows in the tree. |
43b4a21f | 4746 | |
949cf20f KS |
4747 | If ACTION is RESTORE_ORIG_SIZES, restore top and height from values |
4748 | stored in orig_top_line and orig_total_lines for all windows. */ | |
43b4a21f GM |
4749 | |
4750 | static int | |
4751 | save_restore_orig_size (w, action) | |
f984d4fc | 4752 | struct window *w; |
43b4a21f | 4753 | enum save_restore_action action; |
f984d4fc | 4754 | { |
43b4a21f GM |
4755 | int success_p = 1; |
4756 | ||
f984d4fc GM |
4757 | while (w) |
4758 | { | |
4759 | if (!NILP (w->hchild)) | |
43b4a21f GM |
4760 | { |
4761 | if (!save_restore_orig_size (XWINDOW (w->hchild), action)) | |
4762 | success_p = 0; | |
4763 | } | |
f984d4fc | 4764 | else if (!NILP (w->vchild)) |
43b4a21f GM |
4765 | { |
4766 | if (!save_restore_orig_size (XWINDOW (w->vchild), action)) | |
4767 | success_p = 0; | |
4768 | } | |
177c0ea7 | 4769 | |
43b4a21f | 4770 | switch (action) |
f984d4fc | 4771 | { |
43b4a21f | 4772 | case CHECK_ORIG_SIZES: |
949cf20f | 4773 | if (!INTEGERP (w->orig_top_line) || !INTEGERP (w->orig_total_lines)) |
43b4a21f GM |
4774 | return 0; |
4775 | break; | |
4776 | ||
4777 | case SAVE_ORIG_SIZES: | |
949cf20f KS |
4778 | w->orig_top_line = w->top_line; |
4779 | w->orig_total_lines = w->total_lines; | |
43b4a21f GM |
4780 | XSETFASTINT (w->last_modified, 0); |
4781 | XSETFASTINT (w->last_overlay_modified, 0); | |
4782 | break; | |
4783 | ||
4784 | case RESTORE_ORIG_SIZES: | |
949cf20f KS |
4785 | xassert (INTEGERP (w->orig_top_line) && INTEGERP (w->orig_total_lines)); |
4786 | w->top_line = w->orig_top_line; | |
4787 | w->total_lines = w->orig_total_lines; | |
4788 | w->orig_total_lines = w->orig_top_line = Qnil; | |
43b4a21f GM |
4789 | XSETFASTINT (w->last_modified, 0); |
4790 | XSETFASTINT (w->last_overlay_modified, 0); | |
4791 | break; | |
4792 | ||
4793 | default: | |
4794 | abort (); | |
f984d4fc | 4795 | } |
43b4a21f | 4796 | |
f984d4fc GM |
4797 | w = NILP (w->next) ? NULL : XWINDOW (w->next); |
4798 | } | |
43b4a21f GM |
4799 | |
4800 | return success_p; | |
f984d4fc GM |
4801 | } |
4802 | ||
4803 | ||
4804 | /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can | |
4805 | without deleting other windows. */ | |
4806 | ||
4807 | void | |
4808 | grow_mini_window (w, delta) | |
4809 | struct window *w; | |
4810 | int delta; | |
4811 | { | |
4812 | struct frame *f = XFRAME (w->frame); | |
4813 | struct window *root; | |
177c0ea7 | 4814 | |
f984d4fc GM |
4815 | xassert (MINI_WINDOW_P (w)); |
4816 | xassert (delta >= 0); | |
177c0ea7 | 4817 | |
f984d4fc GM |
4818 | /* Check values of window_min_width and window_min_height for |
4819 | validity. */ | |
4820 | check_min_window_sizes (); | |
4821 | ||
4822 | /* Compute how much we can enlarge the mini-window without deleting | |
4823 | other windows. */ | |
4824 | root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4825 | if (delta) | |
4826 | { | |
4827 | int min_height = window_min_size (root, 0, 0, 0); | |
949cf20f | 4828 | if (XFASTINT (root->total_lines) - delta < min_height) |
8b8bd9c6 | 4829 | /* Note that the root window may already be smaller than |
eafa3196 | 4830 | min_height. */ |
949cf20f | 4831 | delta = max (0, XFASTINT (root->total_lines) - min_height); |
f984d4fc | 4832 | } |
177c0ea7 | 4833 | |
f984d4fc GM |
4834 | if (delta) |
4835 | { | |
4836 | /* Save original window sizes and positions, if not already done. */ | |
43b4a21f GM |
4837 | if (!save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
4838 | save_restore_orig_size (root, SAVE_ORIG_SIZES); | |
f984d4fc GM |
4839 | |
4840 | /* Shrink other windows. */ | |
949cf20f | 4841 | shrink_window_lowest_first (root, XFASTINT (root->total_lines) - delta); |
f984d4fc GM |
4842 | |
4843 | /* Grow the mini-window. */ | |
949cf20f KS |
4844 | w->top_line = make_number (XFASTINT (root->top_line) + XFASTINT (root->total_lines)); |
4845 | w->total_lines = make_number (XFASTINT (w->total_lines) + delta); | |
f984d4fc GM |
4846 | XSETFASTINT (w->last_modified, 0); |
4847 | XSETFASTINT (w->last_overlay_modified, 0); | |
177c0ea7 | 4848 | |
f984d4fc GM |
4849 | adjust_glyphs (f); |
4850 | } | |
4851 | } | |
4852 | ||
4853 | ||
86c8e823 GM |
4854 | /* Shrink mini-window W. If there is recorded info about window sizes |
4855 | before a call to grow_mini_window, restore recorded window sizes. | |
4856 | Otherwise, if the mini-window is higher than 1 line, resize it to 1 | |
4857 | line. */ | |
f984d4fc GM |
4858 | |
4859 | void | |
4860 | shrink_mini_window (w) | |
4861 | struct window *w; | |
4862 | { | |
4863 | struct frame *f = XFRAME (w->frame); | |
4864 | struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
4865 | ||
43b4a21f | 4866 | if (save_restore_orig_size (root, CHECK_ORIG_SIZES)) |
f984d4fc | 4867 | { |
43b4a21f | 4868 | save_restore_orig_size (root, RESTORE_ORIG_SIZES); |
f984d4fc GM |
4869 | adjust_glyphs (f); |
4870 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; | |
4871 | windows_or_buffers_changed = 1; | |
4872 | } | |
949cf20f | 4873 | else if (XFASTINT (w->total_lines) > 1) |
86c8e823 | 4874 | { |
0130fe1a GM |
4875 | /* Distribute the additional lines of the mini-window |
4876 | among the other windows. */ | |
86c8e823 GM |
4877 | Lisp_Object window; |
4878 | XSETWINDOW (window, w); | |
56ebfae2 | 4879 | enlarge_window (window, 1 - XFASTINT (w->total_lines), 0); |
86c8e823 | 4880 | } |
f984d4fc GM |
4881 | } |
4882 | ||
4883 | ||
4884 | \f | |
5500c422 GM |
4885 | /* Mark window cursors off for all windows in the window tree rooted |
4886 | at W by setting their phys_cursor_on_p flag to zero. Called from | |
4887 | xterm.c, e.g. when a frame is cleared and thereby all cursors on | |
4888 | the frame are cleared. */ | |
4889 | ||
4890 | void | |
4891 | mark_window_cursors_off (w) | |
4892 | struct window *w; | |
4893 | { | |
4894 | while (w) | |
4895 | { | |
4896 | if (!NILP (w->hchild)) | |
4897 | mark_window_cursors_off (XWINDOW (w->hchild)); | |
4898 | else if (!NILP (w->vchild)) | |
4899 | mark_window_cursors_off (XWINDOW (w->vchild)); | |
4900 | else | |
4901 | w->phys_cursor_on_p = 0; | |
4902 | ||
4903 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
4904 | } | |
4905 | } | |
4906 | ||
4907 | ||
e9c195b1 | 4908 | /* Return number of lines of text (not counting mode lines) in W. */ |
7ab12479 JB |
4909 | |
4910 | int | |
4911 | window_internal_height (w) | |
4912 | struct window *w; | |
4913 | { | |
949cf20f | 4914 | int ht = XFASTINT (w->total_lines); |
7ab12479 | 4915 | |
e9c195b1 GM |
4916 | if (!MINI_WINDOW_P (w)) |
4917 | { | |
4918 | if (!NILP (w->parent) | |
4919 | || !NILP (w->vchild) | |
4920 | || !NILP (w->hchild) | |
4921 | || !NILP (w->next) | |
4922 | || !NILP (w->prev) | |
4923 | || WINDOW_WANTS_MODELINE_P (w)) | |
4924 | --ht; | |
7ab12479 | 4925 | |
e9c195b1 GM |
4926 | if (WINDOW_WANTS_HEADER_LINE_P (w)) |
4927 | --ht; | |
4928 | } | |
7ab12479 JB |
4929 | |
4930 | return ht; | |
4931 | } | |
4932 | ||
535e0b8e JB |
4933 | |
4934 | /* Return the number of columns in W. | |
a3c87d4e | 4935 | Don't count columns occupied by scroll bars or the vertical bar |
535e0b8e | 4936 | separating W from the sibling to its right. */ |
5500c422 | 4937 | |
535e0b8e | 4938 | int |
949cf20f | 4939 | window_box_text_cols (w) |
535e0b8e JB |
4940 | struct window *w; |
4941 | { | |
5500c422 | 4942 | struct frame *f = XFRAME (WINDOW_FRAME (w)); |
949cf20f | 4943 | int width = XINT (w->total_cols); |
535e0b8e | 4944 | |
949cf20f | 4945 | if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)) |
5500c422 | 4946 | /* Scroll bars occupy a few columns. */ |
949cf20f KS |
4947 | width -= WINDOW_CONFIG_SCROLL_BAR_COLS (w); |
4948 | else if (!FRAME_WINDOW_P (f) | |
4949 | && !WINDOW_RIGHTMOST_P (w) && !WINDOW_FULL_WIDTH_P (w)) | |
5500c422 GM |
4950 | /* The column of `|' characters separating side-by-side windows |
4951 | occupies one column only. */ | |
4952 | width -= 1; | |
4953 | ||
5500c422 | 4954 | if (FRAME_WINDOW_P (f)) |
949cf20f KS |
4955 | /* On window-systems, fringes and display margins cannot be |
4956 | used for normal text. */ | |
4957 | width -= (WINDOW_FRINGE_COLS (w) | |
4958 | + WINDOW_LEFT_MARGIN_COLS (w) | |
4959 | + WINDOW_RIGHT_MARGIN_COLS (w)); | |
111e5992 RS |
4960 | |
4961 | return width; | |
535e0b8e JB |
4962 | } |
4963 | ||
5500c422 GM |
4964 | \f |
4965 | /************************************************************************ | |
4966 | Window Scrolling | |
4967 | ***********************************************************************/ | |
535e0b8e | 4968 | |
5500c422 | 4969 | /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll |
d4e7cf01 | 4970 | N screen-fulls, which is defined as the height of the window minus |
5500c422 GM |
4971 | next_screen_context_lines. If WHOLE is zero, scroll up N lines |
4972 | instead. Negative values of N mean scroll down. NOERROR non-zero | |
4973 | means don't signal an error if we try to move over BEGV or ZV, | |
4974 | respectively. */ | |
7ab12479 | 4975 | |
101d1605 RS |
4976 | static void |
4977 | window_scroll (window, n, whole, noerror) | |
7ab12479 JB |
4978 | Lisp_Object window; |
4979 | int n; | |
101d1605 | 4980 | int whole; |
f8026fd8 | 4981 | int noerror; |
5500c422 | 4982 | { |
cba59f77 RS |
4983 | immediate_quit = 1; |
4984 | ||
5500c422 GM |
4985 | /* If we must, use the pixel-based version which is much slower than |
4986 | the line-based one but can handle varying line heights. */ | |
4987 | if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame))) | |
4988 | window_scroll_pixel_based (window, n, whole, noerror); | |
4989 | else | |
4990 | window_scroll_line_based (window, n, whole, noerror); | |
cba59f77 RS |
4991 | |
4992 | immediate_quit = 0; | |
5500c422 GM |
4993 | } |
4994 | ||
4995 | ||
4996 | /* Implementation of window_scroll that works based on pixel line | |
4997 | heights. See the comment of window_scroll for parameter | |
4998 | descriptions. */ | |
4999 | ||
5000 | static void | |
5001 | window_scroll_pixel_based (window, n, whole, noerror) | |
5002 | Lisp_Object window; | |
5003 | int n; | |
5004 | int whole; | |
5005 | int noerror; | |
5006 | { | |
5007 | struct it it; | |
5008 | struct window *w = XWINDOW (window); | |
5009 | struct text_pos start; | |
5500c422 | 5010 | int this_scroll_margin; |
5cdb3cf3 MB |
5011 | /* True if we fiddled the window vscroll field without really scrolling. */ |
5012 | int vscrolled = 0; | |
5a857365 | 5013 | int x, y, rtop, rbot, rowh, vpos; |
5500c422 GM |
5014 | |
5015 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
177c0ea7 | 5016 | |
5500c422 | 5017 | /* If PT is not visible in WINDOW, move back one half of |
288d4e06 GM |
5018 | the screen. Allow PT to be partially visible, otherwise |
5019 | something like (scroll-down 1) with PT in the line before | |
5020 | the partially visible one would recenter. */ | |
5a857365 KS |
5021 | |
5022 | if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos)) | |
5500c422 GM |
5023 | { |
5024 | /* Move backward half the height of the window. Performance note: | |
5025 | vmotion used here is about 10% faster, but would give wrong | |
5026 | results for variable height lines. */ | |
5027 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
5028 | it.current_y = it.last_visible_y; | |
f204989e | 5029 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
177c0ea7 | 5030 | |
5500c422 GM |
5031 | /* The function move_iterator_vertically may move over more than |
5032 | the specified y-distance. If it->w is small, e.g. a | |
5033 | mini-buffer window, we may end up in front of the window's | |
5034 | display area. This is the case when Start displaying at the | |
5035 | start of the line containing PT in this case. */ | |
5036 | if (it.current_y <= 0) | |
5037 | { | |
5038 | init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID); | |
f204989e | 5039 | move_it_vertically_backward (&it, 0); |
5500c422 GM |
5040 | it.current_y = 0; |
5041 | } | |
5042 | ||
5043 | start = it.current.pos; | |
5044 | } | |
e56263e5 KS |
5045 | else if (auto_window_vscroll_p) |
5046 | { | |
5a857365 | 5047 | if (rtop || rbot) /* partially visible */ |
e56263e5 KS |
5048 | { |
5049 | int px; | |
5050 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
5051 | if (whole) | |
e856c216 KS |
5052 | dy = max ((window_box_height (w) |
5053 | - next_screen_context_lines * dy), | |
5054 | dy); | |
e56263e5 KS |
5055 | dy *= n; |
5056 | ||
5a857365 | 5057 | if (n < 0) |
e56263e5 | 5058 | { |
5a857365 KS |
5059 | /* Only vscroll backwards if already vscrolled forwards. */ |
5060 | if (w->vscroll < 0 && rtop > 0) | |
5061 | { | |
5062 | px = max (0, -w->vscroll - min (rtop, -dy)); | |
5063 | Fset_window_vscroll (window, make_number (px), Qt); | |
5064 | return; | |
5065 | } | |
e56263e5 | 5066 | } |
5a857365 | 5067 | if (n > 0) |
e56263e5 | 5068 | { |
5a857365 KS |
5069 | /* Do vscroll if already vscrolled or only display line. */ |
5070 | if (rbot > 0 && (w->vscroll < 0 || vpos == 0)) | |
5071 | { | |
5072 | px = max (0, -w->vscroll + min (rbot, dy)); | |
5073 | Fset_window_vscroll (window, make_number (px), Qt); | |
5074 | return; | |
5075 | } | |
5076 | ||
5077 | /* Maybe modify window start instead of scrolling. */ | |
5078 | if (rbot > 0 || w->vscroll < 0) | |
5079 | { | |
5080 | int spos; | |
5081 | ||
5082 | Fset_window_vscroll (window, make_number (0), Qt); | |
5083 | /* If there are other text lines above the current row, | |
5084 | move window start to current row. Else to next row. */ | |
5085 | if (rbot > 0) | |
5086 | spos = XINT (Fline_beginning_position (Qnil)); | |
5087 | else | |
5088 | spos = min (XINT (Fline_end_position (Qnil)) + 1, ZV); | |
5089 | set_marker_restricted (w->start, make_number (spos), | |
5090 | w->buffer); | |
5091 | w->start_at_line_beg = Qt; | |
5092 | w->update_mode_line = Qt; | |
5093 | XSETFASTINT (w->last_modified, 0); | |
5094 | XSETFASTINT (w->last_overlay_modified, 0); | |
5095 | /* Set force_start so that redisplay_window will run the | |
5096 | window-scroll-functions. */ | |
5097 | w->force_start = Qt; | |
5098 | return; | |
5099 | } | |
e56263e5 KS |
5100 | } |
5101 | } | |
5a857365 | 5102 | /* Cancel previous vscroll. */ |
e56263e5 KS |
5103 | Fset_window_vscroll (window, make_number (0), Qt); |
5104 | } | |
5500c422 | 5105 | |
d0c38d63 | 5106 | /* If scroll_preserve_screen_position is non-nil, we try to set |
5500c422 GM |
5107 | point in the same window line as it is now, so get that line. */ |
5108 | if (!NILP (Vscroll_preserve_screen_position)) | |
5109 | { | |
c525d842 CY |
5110 | /* We preserve the goal pixel coordinate across consecutive |
5111 | calls to scroll-up or scroll-down. This avoids the | |
5112 | possibility of point becoming "stuck" on a tall line when | |
5113 | scrolling by one line. */ | |
66fe93d1 | 5114 | if (window_scroll_pixel_based_preserve_y < 0 |
7d619454 SM |
5115 | || (!EQ (current_kboard->Vlast_command, Qscroll_up) |
5116 | && !EQ (current_kboard->Vlast_command, Qscroll_down))) | |
c525d842 CY |
5117 | { |
5118 | start_display (&it, w, start); | |
5119 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
66fe93d1 | 5120 | window_scroll_pixel_based_preserve_y = it.current_y; |
c525d842 | 5121 | } |
5500c422 GM |
5122 | } |
5123 | else | |
66fe93d1 | 5124 | window_scroll_pixel_based_preserve_y = -1; |
5500c422 GM |
5125 | |
5126 | /* Move iterator it from start the specified distance forward or | |
5127 | backward. The result is the new window start. */ | |
5128 | start_display (&it, w, start); | |
5129 | if (whole) | |
5130 | { | |
e856c216 KS |
5131 | int start_pos = IT_CHARPOS (it); |
5132 | int dy = WINDOW_FRAME_LINE_HEIGHT (w); | |
5133 | dy = max ((window_box_height (w) | |
5134 | - next_screen_context_lines * dy), | |
5135 | dy) * n; | |
d72340d4 GM |
5136 | |
5137 | /* Note that move_it_vertically always moves the iterator to the | |
5138 | start of a line. So, if the last line doesn't have a newline, | |
5139 | we would end up at the start of the line ending at ZV. */ | |
5140 | if (dy <= 0) | |
e856c216 KS |
5141 | { |
5142 | move_it_vertically_backward (&it, -dy); | |
5a857365 | 5143 | /* Ensure we actually do move, e.g. in case we are currently |
e856c216 KS |
5144 | looking at an image that is taller that the window height. */ |
5145 | while (start_pos == IT_CHARPOS (it) | |
5146 | && start_pos > BEGV) | |
5147 | move_it_by_lines (&it, -1, 1); | |
5148 | } | |
d72340d4 | 5149 | else if (dy > 0) |
bed83ee4 | 5150 | { |
bed83ee4 KS |
5151 | move_it_to (&it, ZV, -1, it.current_y + dy, -1, |
5152 | MOVE_TO_POS | MOVE_TO_Y); | |
5a857365 | 5153 | /* Ensure we actually do move, e.g. in case we are currently |
bed83ee4 KS |
5154 | looking at an image that is taller that the window height. */ |
5155 | while (start_pos == IT_CHARPOS (it) | |
5156 | && start_pos < ZV) | |
5157 | move_it_by_lines (&it, 1, 1); | |
5158 | } | |
5500c422 GM |
5159 | } |
5160 | else | |
5161 | move_it_by_lines (&it, n, 1); | |
5162 | ||
96ae58c8 RS |
5163 | /* We failed if we find ZV is already on the screen (scrolling up, |
5164 | means there's nothing past the end), or if we can't start any | |
5165 | earlier (scrolling down, means there's nothing past the top). */ | |
5500c422 | 5166 | if ((n > 0 && IT_CHARPOS (it) == ZV) |
96ae58c8 | 5167 | || (n < 0 && IT_CHARPOS (it) == CHARPOS (start))) |
5500c422 | 5168 | { |
5cdb3cf3 MB |
5169 | if (IT_CHARPOS (it) == ZV) |
5170 | { | |
07ce8b53 RS |
5171 | if (it.current_y < it.last_visible_y |
5172 | && (it.current_y + it.max_ascent + it.max_descent | |
3f489dc7 | 5173 | > it.last_visible_y)) |
a74eca50 GM |
5174 | { |
5175 | /* The last line was only partially visible, make it fully | |
5176 | visible. */ | |
5177 | w->vscroll = (it.last_visible_y | |
5178 | - it.current_y + it.max_ascent + it.max_descent); | |
5179 | adjust_glyphs (it.f); | |
5180 | } | |
5cdb3cf3 MB |
5181 | else if (noerror) |
5182 | return; | |
cf402f3f | 5183 | else if (n < 0) /* could happen with empty buffers */ |
ba96a5cf | 5184 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 | 5185 | else |
ba96a5cf | 5186 | xsignal0 (Qend_of_buffer); |
5cdb3cf3 | 5187 | } |
5500c422 | 5188 | else |
5cdb3cf3 MB |
5189 | { |
5190 | if (w->vscroll != 0) | |
5191 | /* The first line was only partially visible, make it fully | |
5192 | visible. */ | |
5193 | w->vscroll = 0; | |
5194 | else if (noerror) | |
5195 | return; | |
5196 | else | |
ba96a5cf | 5197 | xsignal0 (Qbeginning_of_buffer); |
5cdb3cf3 MB |
5198 | } |
5199 | ||
5200 | /* If control gets here, then we vscrolled. */ | |
5201 | ||
5202 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
5203 | ||
5204 | /* Don't try to change the window start below. */ | |
5205 | vscrolled = 1; | |
5500c422 GM |
5206 | } |
5207 | ||
5cdb3cf3 MB |
5208 | if (! vscrolled) |
5209 | { | |
dad67609 RS |
5210 | int pos = IT_CHARPOS (it); |
5211 | int bytepos; | |
e68def1e AS |
5212 | |
5213 | /* If in the middle of a multi-glyph character move forward to | |
5214 | the next character. */ | |
5215 | if (in_display_vector_p (&it)) | |
5216 | { | |
5217 | ++pos; | |
5218 | move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS); | |
5219 | } | |
5220 | ||
5cdb3cf3 | 5221 | /* Set the window start, and set up the window for redisplay. */ |
dad67609 | 5222 | set_marker_restricted (w->start, make_number (pos), |
5cdb3cf3 | 5223 | w->buffer); |
dad67609 RS |
5224 | bytepos = XMARKER (w->start)->bytepos; |
5225 | w->start_at_line_beg = ((pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n') | |
5226 | ? Qt : Qnil); | |
5cdb3cf3 MB |
5227 | w->update_mode_line = Qt; |
5228 | XSETFASTINT (w->last_modified, 0); | |
5229 | XSETFASTINT (w->last_overlay_modified, 0); | |
5230 | /* Set force_start so that redisplay_window will run the | |
5231 | window-scroll-functions. */ | |
5232 | w->force_start = Qt; | |
5233 | } | |
177c0ea7 | 5234 | |
dc297565 RS |
5235 | /* The rest of this function uses current_y in a nonstandard way, |
5236 | not including the height of the header line if any. */ | |
5500c422 | 5237 | it.current_y = it.vpos = 0; |
177c0ea7 | 5238 | |
940f53e5 RS |
5239 | /* Move PT out of scroll margins. |
5240 | This code wants current_y to be zero at the window start position | |
5241 | even if there is a header line. */ | |
5242 | this_scroll_margin = max (0, scroll_margin); | |
5243 | this_scroll_margin = min (this_scroll_margin, XFASTINT (w->total_lines) / 4); | |
5244 | this_scroll_margin *= FRAME_LINE_HEIGHT (it.f); | |
5245 | ||
5246 | if (n > 0) | |
5500c422 | 5247 | { |
940f53e5 RS |
5248 | /* We moved the window start towards ZV, so PT may be now |
5249 | in the scroll margin at the top. */ | |
5250 | move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS); | |
bdf4ec93 RS |
5251 | if (IT_CHARPOS (it) == PT && it.current_y >= this_scroll_margin |
5252 | && (NILP (Vscroll_preserve_screen_position) | |
5253 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5254 | /* We found PT at a legitimate height. Leave it alone. */ |
5255 | ; | |
66fe93d1 | 5256 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 | 5257 | { |
fa3c3426 RS |
5258 | /* If we have a header line, take account of it. |
5259 | This is necessary because we set it.current_y to 0, above. */ | |
c525d842 | 5260 | move_it_to (&it, -1, -1, |
66fe93d1 LT |
5261 | window_scroll_pixel_based_preserve_y |
5262 | - (WINDOW_WANTS_HEADER_LINE_P (w) ? 1 : 0 ), | |
c525d842 | 5263 | -1, MOVE_TO_Y); |
940f53e5 RS |
5264 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5265 | } | |
5266 | else | |
5500c422 | 5267 | { |
5500c422 | 5268 | while (it.current_y < this_scroll_margin) |
e9b2c961 RS |
5269 | { |
5270 | int prev = it.current_y; | |
5271 | move_it_by_lines (&it, 1, 1); | |
5272 | if (prev == it.current_y) | |
5273 | break; | |
5274 | } | |
5500c422 GM |
5275 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5276 | } | |
940f53e5 RS |
5277 | } |
5278 | else if (n < 0) | |
5279 | { | |
5280 | int charpos, bytepos; | |
aed328bf | 5281 | int partial_p; |
940f53e5 | 5282 | |
66fe93d1 LT |
5283 | /* Save our position, for the |
5284 | window_scroll_pixel_based_preserve_y case. */ | |
940f53e5 RS |
5285 | charpos = IT_CHARPOS (it); |
5286 | bytepos = IT_BYTEPOS (it); | |
5cdb3cf3 | 5287 | |
940f53e5 RS |
5288 | /* We moved the window start towards BEGV, so PT may be now |
5289 | in the scroll margin at the bottom. */ | |
5290 | move_it_to (&it, PT, -1, | |
7ad53239 RS |
5291 | (it.last_visible_y - CURRENT_HEADER_LINE_HEIGHT (w) |
5292 | - this_scroll_margin - 1), | |
5293 | -1, | |
940f53e5 RS |
5294 | MOVE_TO_POS | MOVE_TO_Y); |
5295 | ||
aed328bf KS |
5296 | /* Save our position, in case it's correct. */ |
5297 | charpos = IT_CHARPOS (it); | |
5298 | bytepos = IT_BYTEPOS (it); | |
5299 | ||
5300 | /* See if point is on a partially visible line at the end. */ | |
5301 | if (it.what == IT_EOB) | |
5302 | partial_p = it.current_y + it.ascent + it.descent > it.last_visible_y; | |
5303 | else | |
5304 | { | |
5305 | move_it_by_lines (&it, 1, 1); | |
5306 | partial_p = it.current_y > it.last_visible_y; | |
5307 | } | |
5308 | ||
bdf4ec93 RS |
5309 | if (charpos == PT && !partial_p |
5310 | && (NILP (Vscroll_preserve_screen_position) | |
5311 | || EQ (Vscroll_preserve_screen_position, Qt))) | |
940f53e5 RS |
5312 | /* We found PT before we found the display margin, so PT is ok. */ |
5313 | ; | |
66fe93d1 | 5314 | else if (window_scroll_pixel_based_preserve_y >= 0) |
940f53e5 RS |
5315 | { |
5316 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5317 | start_display (&it, w, start); | |
c525d842 CY |
5318 | /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT |
5319 | here because we called start_display again and did not | |
5320 | alter it.current_y this time. */ | |
66fe93d1 LT |
5321 | move_it_to (&it, -1, -1, window_scroll_pixel_based_preserve_y, -1, |
5322 | MOVE_TO_Y); | |
940f53e5 RS |
5323 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); |
5324 | } | |
5325 | else | |
5326 | { | |
aed328bf | 5327 | if (partial_p) |
5cdb3cf3 MB |
5328 | /* The last line was only partially visible, so back up two |
5329 | lines to make sure we're on a fully visible line. */ | |
5330 | { | |
5331 | move_it_by_lines (&it, -2, 0); | |
5332 | SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it)); | |
5333 | } | |
5334 | else | |
5335 | /* No, the position we saved is OK, so use it. */ | |
5336 | SET_PT_BOTH (charpos, bytepos); | |
5500c422 GM |
5337 | } |
5338 | } | |
5339 | } | |
5340 | ||
5341 | ||
5342 | /* Implementation of window_scroll that works based on screen lines. | |
5343 | See the comment of window_scroll for parameter descriptions. */ | |
5344 | ||
5345 | static void | |
5346 | window_scroll_line_based (window, n, whole, noerror) | |
5347 | Lisp_Object window; | |
5348 | int n; | |
5349 | int whole; | |
5350 | int noerror; | |
7ab12479 JB |
5351 | { |
5352 | register struct window *w = XWINDOW (window); | |
5500c422 | 5353 | register int opoint = PT, opoint_byte = PT_BYTE; |
b73ea88e | 5354 | register int pos, pos_byte; |
7ab12479 JB |
5355 | register int ht = window_internal_height (w); |
5356 | register Lisp_Object tem; | |
5357 | int lose; | |
5500c422 | 5358 | Lisp_Object bolp; |
345d45b2 | 5359 | int startpos; |
101d1605 RS |
5360 | struct position posit; |
5361 | int original_vpos; | |
5362 | ||
d4e7cf01 GM |
5363 | /* If scrolling screen-fulls, compute the number of lines to |
5364 | scroll from the window's height. */ | |
5365 | if (whole) | |
5366 | n *= max (1, ht - next_screen_context_lines); | |
5367 | ||
101d1605 RS |
5368 | startpos = marker_position (w->start); |
5369 | ||
5370 | posit = *compute_motion (startpos, 0, 0, 0, | |
5371 | PT, ht, 0, | |
ec2b66c4 | 5372 | -1, XINT (w->hscroll), |
101d1605 RS |
5373 | 0, w); |
5374 | original_vpos = posit.vpos; | |
0a1f771a | 5375 | |
d834a2e9 | 5376 | XSETFASTINT (tem, PT); |
6ffdb539 | 5377 | tem = Fpos_visible_in_window_p (tem, window, Qnil); |
7ab12479 | 5378 | |
265a9e55 | 5379 | if (NILP (tem)) |
7ab12479 | 5380 | { |
cd2be1dd | 5381 | Fvertical_motion (make_number (- (ht / 2)), window); |
345d45b2 | 5382 | startpos = PT; |
7ab12479 JB |
5383 | } |
5384 | ||
345d45b2 | 5385 | SET_PT (startpos); |
5ce7b543 | 5386 | lose = n < 0 && PT == BEGV; |
540b6aa0 | 5387 | Fvertical_motion (make_number (n), window); |
5ce7b543 | 5388 | pos = PT; |
b73ea88e | 5389 | pos_byte = PT_BYTE; |
7ab12479 | 5390 | bolp = Fbolp (); |
b73ea88e | 5391 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 JB |
5392 | |
5393 | if (lose) | |
f8026fd8 JB |
5394 | { |
5395 | if (noerror) | |
5396 | return; | |
5397 | else | |
ba96a5cf | 5398 | xsignal0 (Qbeginning_of_buffer); |
f8026fd8 | 5399 | } |
7ab12479 JB |
5400 | |
5401 | if (pos < ZV) | |
7ab12479 | 5402 | { |
0c7da84e RS |
5403 | int this_scroll_margin = scroll_margin; |
5404 | ||
5405 | /* Don't use a scroll margin that is negative or too large. */ | |
5406 | if (this_scroll_margin < 0) | |
5407 | this_scroll_margin = 0; | |
5408 | ||
949cf20f KS |
5409 | if (XINT (w->total_lines) < 4 * scroll_margin) |
5410 | this_scroll_margin = XINT (w->total_lines) / 4; | |
0c7da84e | 5411 | |
b73ea88e | 5412 | set_marker_restricted_both (w->start, w->buffer, pos, pos_byte); |
7ab12479 JB |
5413 | w->start_at_line_beg = bolp; |
5414 | w->update_mode_line = Qt; | |
d834a2e9 | 5415 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 5416 | XSETFASTINT (w->last_overlay_modified, 0); |
345d45b2 RS |
5417 | /* Set force_start so that redisplay_window will run |
5418 | the window-scroll-functions. */ | |
5419 | w->force_start = Qt; | |
0c7da84e | 5420 | |
bdf4ec93 RS |
5421 | if (!NILP (Vscroll_preserve_screen_position) |
5422 | && (whole || !EQ (Vscroll_preserve_screen_position, Qt))) | |
0c7da84e | 5423 | { |
b73ea88e | 5424 | SET_PT_BOTH (pos, pos_byte); |
101d1605 | 5425 | Fvertical_motion (make_number (original_vpos), window); |
0c7da84e | 5426 | } |
101d1605 RS |
5427 | /* If we scrolled forward, put point enough lines down |
5428 | that it is outside the scroll margin. */ | |
5429 | else if (n > 0) | |
0c7da84e | 5430 | { |
101d1605 RS |
5431 | int top_margin; |
5432 | ||
5433 | if (this_scroll_margin > 0) | |
5434 | { | |
b73ea88e | 5435 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
5436 | Fvertical_motion (make_number (this_scroll_margin), window); |
5437 | top_margin = PT; | |
5438 | } | |
5439 | else | |
5440 | top_margin = pos; | |
5441 | ||
5442 | if (top_margin <= opoint) | |
b73ea88e | 5443 | SET_PT_BOTH (opoint, opoint_byte); |
5500c422 | 5444 | else if (!NILP (Vscroll_preserve_screen_position)) |
101d1605 | 5445 | { |
b73ea88e | 5446 | SET_PT_BOTH (pos, pos_byte); |
101d1605 RS |
5447 | Fvertical_motion (make_number (original_vpos), window); |
5448 | } | |
9317a85d | 5449 | else |
335406fc | 5450 | SET_PT (top_margin); |
0c7da84e | 5451 | } |
101d1605 | 5452 | else if (n < 0) |
7ab12479 | 5453 | { |
101d1605 RS |
5454 | int bottom_margin; |
5455 | ||
0c7da84e RS |
5456 | /* If we scrolled backward, put point near the end of the window |
5457 | but not within the scroll margin. */ | |
b73ea88e | 5458 | SET_PT_BOTH (pos, pos_byte); |
0c7da84e | 5459 | tem = Fvertical_motion (make_number (ht - this_scroll_margin), window); |
101d1605 RS |
5460 | if (XFASTINT (tem) == ht - this_scroll_margin) |
5461 | bottom_margin = PT; | |
5462 | else | |
5463 | bottom_margin = PT + 1; | |
5464 | ||
5465 | if (bottom_margin > opoint) | |
b73ea88e | 5466 | SET_PT_BOTH (opoint, opoint_byte); |
7ab12479 | 5467 | else |
101d1605 | 5468 | { |
5500c422 | 5469 | if (!NILP (Vscroll_preserve_screen_position)) |
9317a85d | 5470 | { |
b73ea88e | 5471 | SET_PT_BOTH (pos, pos_byte); |
9317a85d RS |
5472 | Fvertical_motion (make_number (original_vpos), window); |
5473 | } | |
5474 | else | |
5475 | Fvertical_motion (make_number (-1), window); | |
101d1605 | 5476 | } |
7ab12479 JB |
5477 | } |
5478 | } | |
5479 | else | |
f8026fd8 JB |
5480 | { |
5481 | if (noerror) | |
5482 | return; | |
5483 | else | |
ba96a5cf | 5484 | xsignal0 (Qend_of_buffer); |
f8026fd8 | 5485 | } |
7ab12479 | 5486 | } |
5500c422 GM |
5487 | |
5488 | ||
5489 | /* Scroll selected_window up or down. If N is nil, scroll a | |
5490 | screen-full which is defined as the height of the window minus | |
5491 | next_screen_context_lines. If N is the symbol `-', scroll. | |
5492 | DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll | |
5493 | up. This is the guts of Fscroll_up and Fscroll_down. */ | |
7ab12479 JB |
5494 | |
5495 | static void | |
5496 | scroll_command (n, direction) | |
5500c422 | 5497 | Lisp_Object n; |
7ab12479 JB |
5498 | int direction; |
5499 | { | |
331379bf | 5500 | int count = SPECPDL_INDEX (); |
7ab12479 | 5501 | |
1ea40aa2 | 5502 | xassert (eabs (direction) == 1); |
5500c422 GM |
5503 | |
5504 | /* If selected window's buffer isn't current, make it current for | |
5505 | the moment. But don't screw up if window_scroll gets an error. */ | |
7ab12479 | 5506 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) |
95605e15 JB |
5507 | { |
5508 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5509 | Fset_buffer (XWINDOW (selected_window)->buffer); | |
5500c422 GM |
5510 | |
5511 | /* Make redisplay consider other windows than just selected_window. */ | |
5512 | ++windows_or_buffers_changed; | |
95605e15 | 5513 | } |
7ab12479 | 5514 | |
265a9e55 | 5515 | if (NILP (n)) |
d4e7cf01 | 5516 | window_scroll (selected_window, direction, 1, 0); |
7ab12479 | 5517 | else if (EQ (n, Qminus)) |
d4e7cf01 | 5518 | window_scroll (selected_window, -direction, 1, 0); |
7ab12479 JB |
5519 | else |
5520 | { | |
5521 | n = Fprefix_numeric_value (n); | |
101d1605 | 5522 | window_scroll (selected_window, XINT (n) * direction, 0, 0); |
7ab12479 | 5523 | } |
95605e15 JB |
5524 | |
5525 | unbind_to (count, Qnil); | |
7ab12479 JB |
5526 | } |
5527 | ||
5528 | DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "P", | |
a0a37a6f LT |
5529 | doc: /* Scroll text of current window upward ARG lines. |
5530 | If ARG is omitted or nil, scroll upward by a near full screen. | |
fdb82f93 PJ |
5531 | A near full screen is `next-screen-context-lines' less than a full screen. |
5532 | Negative ARG means scroll downward. | |
5533 | If ARG is the atom `-', scroll downward by nearly full screen. | |
5534 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5535 | (arg) | |
413430c5 | 5536 | Lisp_Object arg; |
7ab12479 | 5537 | { |
413430c5 | 5538 | scroll_command (arg, 1); |
7ab12479 JB |
5539 | return Qnil; |
5540 | } | |
5541 | ||
5542 | DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "P", | |
a0a37a6f LT |
5543 | doc: /* Scroll text of current window down ARG lines. |
5544 | If ARG is omitted or nil, scroll down by a near full screen. | |
fdb82f93 PJ |
5545 | A near full screen is `next-screen-context-lines' less than a full screen. |
5546 | Negative ARG means scroll upward. | |
5547 | If ARG is the atom `-', scroll upward by nearly full screen. | |
5548 | When calling from a program, supply as argument a number, nil, or `-'. */) | |
5549 | (arg) | |
413430c5 | 5550 | Lisp_Object arg; |
7ab12479 | 5551 | { |
413430c5 | 5552 | scroll_command (arg, -1); |
7ab12479 JB |
5553 | return Qnil; |
5554 | } | |
ccd0664b RS |
5555 | \f |
5556 | DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0, | |
fdb82f93 | 5557 | doc: /* Return the other window for \"other window scroll\" commands. |
fdb82f93 | 5558 | If `other-window-scroll-buffer' is non-nil, a window |
a0a37a6f LT |
5559 | showing that buffer is used. |
5560 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5561 | specifies the window. This takes precedence over | |
5562 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5563 | () |
7ab12479 | 5564 | { |
ccd0664b | 5565 | Lisp_Object window; |
7ab12479 JB |
5566 | |
5567 | if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
265a9e55 | 5568 | && !NILP (Vminibuf_scroll_window)) |
7ab12479 JB |
5569 | window = Vminibuf_scroll_window; |
5570 | /* If buffer is specified, scroll that buffer. */ | |
265a9e55 | 5571 | else if (!NILP (Vother_window_scroll_buffer)) |
7ab12479 JB |
5572 | { |
5573 | window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil); | |
265a9e55 | 5574 | if (NILP (window)) |
53f76081 | 5575 | window = Fdisplay_buffer (Vother_window_scroll_buffer, Qt, Qnil); |
7ab12479 JB |
5576 | } |
5577 | else | |
dbc4e1c1 JB |
5578 | { |
5579 | /* Nothing specified; look for a neighboring window on the same | |
5580 | frame. */ | |
5581 | window = Fnext_window (selected_window, Qnil, Qnil); | |
5582 | ||
5583 | if (EQ (window, selected_window)) | |
5584 | /* That didn't get us anywhere; look for a window on another | |
5585 | visible frame. */ | |
5586 | do | |
5587 | window = Fnext_window (window, Qnil, Qt); | |
5588 | while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
5589 | && ! EQ (window, selected_window)); | |
5590 | } | |
5591 | ||
b7826503 | 5592 | CHECK_LIVE_WINDOW (window); |
7ab12479 JB |
5593 | |
5594 | if (EQ (window, selected_window)) | |
5595 | error ("There is no other window"); | |
5596 | ||
ccd0664b RS |
5597 | return window; |
5598 | } | |
5599 | ||
5600 | DEFUN ("scroll-other-window", Fscroll_other_window, Sscroll_other_window, 0, 1, "P", | |
fdb82f93 PJ |
5601 | doc: /* Scroll next window upward ARG lines; or near full screen if no ARG. |
5602 | A near full screen is `next-screen-context-lines' less than a full screen. | |
5603 | The next window is the one below the current one; or the one at the top | |
5604 | if the current one is at the bottom. 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 | ||
fdb82f93 | 5608 | If `other-window-scroll-buffer' is non-nil, scroll the window |
a0a37a6f LT |
5609 | showing that buffer, popping the buffer up if necessary. |
5610 | If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
5611 | specifies the window to scroll. This takes precedence over | |
5612 | `other-window-scroll-buffer'. */) | |
fdb82f93 | 5613 | (arg) |
d4e7cf01 | 5614 | Lisp_Object arg; |
ccd0664b | 5615 | { |
d4e7cf01 GM |
5616 | Lisp_Object window; |
5617 | struct window *w; | |
331379bf | 5618 | int count = SPECPDL_INDEX (); |
ccd0664b RS |
5619 | |
5620 | window = Fother_window_for_scrolling (); | |
7ab12479 | 5621 | w = XWINDOW (window); |
7ab12479 JB |
5622 | |
5623 | /* Don't screw up if window_scroll gets an error. */ | |
5624 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
5500c422 | 5625 | ++windows_or_buffers_changed; |
7ab12479 JB |
5626 | |
5627 | Fset_buffer (w->buffer); | |
5628 | SET_PT (marker_position (w->pointm)); | |
5629 | ||
413430c5 | 5630 | if (NILP (arg)) |
d4e7cf01 | 5631 | window_scroll (window, 1, 1, 1); |
413430c5 | 5632 | else if (EQ (arg, Qminus)) |
d4e7cf01 | 5633 | window_scroll (window, -1, 1, 1); |
7ab12479 JB |
5634 | else |
5635 | { | |
413430c5 EN |
5636 | if (CONSP (arg)) |
5637 | arg = Fcar (arg); | |
b7826503 | 5638 | CHECK_NUMBER (arg); |
101d1605 | 5639 | window_scroll (window, XINT (arg), 0, 1); |
7ab12479 JB |
5640 | } |
5641 | ||
b73ea88e | 5642 | set_marker_both (w->pointm, Qnil, PT, PT_BYTE); |
f4e7b2c2 | 5643 | unbind_to (count, Qnil); |
7ab12479 JB |
5644 | |
5645 | return Qnil; | |
5646 | } | |
5647 | \f | |
dc297565 | 5648 | DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "P\np", |
fdb82f93 | 5649 | doc: /* Scroll selected window display ARG columns left. |
2fe41216 EZ |
5650 | Default for ARG is window width minus 2. |
5651 | Value is the total amount of leftward horizontal scrolling in | |
5652 | effect after the change. | |
dc297565 RS |
5653 | If SET_MINIMUM is non-nil, the new scroll amount becomes the |
5654 | lower bound for automatic scrolling, i.e. automatic scrolling | |
2fe41216 | 5655 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5656 | by this function. This happens in an interactive call. */) |
5657 | (arg, set_minimum) | |
5658 | register Lisp_Object arg, set_minimum; | |
7ab12479 | 5659 | { |
c67fa410 GM |
5660 | Lisp_Object result; |
5661 | int hscroll; | |
5662 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5663 | |
265a9e55 | 5664 | if (NILP (arg)) |
949cf20f | 5665 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5666 | else |
5667 | arg = Fprefix_numeric_value (arg); | |
5668 | ||
c67fa410 GM |
5669 | hscroll = XINT (w->hscroll) + XINT (arg); |
5670 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
5671 | ||
dc297565 | 5672 | if (!NILP (set_minimum)) |
c67fa410 GM |
5673 | w->min_hscroll = w->hscroll; |
5674 | ||
5675 | return result; | |
7ab12479 JB |
5676 | } |
5677 | ||
dc297565 | 5678 | DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "P\np", |
fdb82f93 | 5679 | doc: /* Scroll selected window display ARG columns right. |
2fe41216 EZ |
5680 | Default for ARG is window width minus 2. |
5681 | Value is the total amount of leftward horizontal scrolling in | |
5682 | effect after the change. | |
dc297565 RS |
5683 | If SET_MINIMUM is non-nil, the new scroll amount becomes the |
5684 | lower bound for automatic scrolling, i.e. automatic scrolling | |
2fe41216 | 5685 | will not scroll a window to a column less than the value returned |
dc297565 RS |
5686 | by this function. This happens in an interactive call. */) |
5687 | (arg, set_minimum) | |
a93563fd | 5688 | register Lisp_Object arg, set_minimum; |
7ab12479 | 5689 | { |
c67fa410 GM |
5690 | Lisp_Object result; |
5691 | int hscroll; | |
5692 | struct window *w = XWINDOW (selected_window); | |
177c0ea7 | 5693 | |
265a9e55 | 5694 | if (NILP (arg)) |
949cf20f | 5695 | XSETFASTINT (arg, window_box_text_cols (w) - 2); |
7ab12479 JB |
5696 | else |
5697 | arg = Fprefix_numeric_value (arg); | |
5698 | ||
c67fa410 GM |
5699 | hscroll = XINT (w->hscroll) - XINT (arg); |
5700 | result = Fset_window_hscroll (selected_window, make_number (hscroll)); | |
177c0ea7 | 5701 | |
dc297565 | 5702 | if (!NILP (set_minimum)) |
c67fa410 GM |
5703 | w->min_hscroll = w->hscroll; |
5704 | ||
5705 | return result; | |
7ab12479 JB |
5706 | } |
5707 | ||
fa832261 KS |
5708 | DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0, |
5709 | doc: /* Return the window which was selected when entering the minibuffer. | |
5710 | Returns nil, if current window is not a minibuffer window. */) | |
5711 | () | |
5712 | { | |
5713 | if (minibuf_level > 0 | |
5714 | && MINI_WINDOW_P (XWINDOW (selected_window)) | |
fa832261 KS |
5715 | && WINDOW_LIVE_P (minibuf_selected_window)) |
5716 | return minibuf_selected_window; | |
5717 | ||
5718 | return Qnil; | |
5719 | } | |
5720 | ||
12c8b416 GM |
5721 | /* Value is the number of lines actually displayed in window W, |
5722 | as opposed to its height. */ | |
5723 | ||
5724 | static int | |
5725 | displayed_window_lines (w) | |
5726 | struct window *w; | |
5727 | { | |
5728 | struct it it; | |
5729 | struct text_pos start; | |
5730 | int height = window_box_height (w); | |
5731 | struct buffer *old_buffer; | |
5732 | int bottom_y; | |
5733 | ||
5734 | if (XBUFFER (w->buffer) != current_buffer) | |
5735 | { | |
5736 | old_buffer = current_buffer; | |
5737 | set_buffer_internal (XBUFFER (w->buffer)); | |
5738 | } | |
5739 | else | |
5740 | old_buffer = NULL; | |
5741 | ||
521b203e GM |
5742 | /* In case W->start is out of the accessible range, do something |
5743 | reasonable. This happens in Info mode when Info-scroll-down | |
5744 | calls (recenter -1) while W->start is 1. */ | |
5745 | if (XMARKER (w->start)->charpos < BEGV) | |
5746 | SET_TEXT_POS (start, BEGV, BEGV_BYTE); | |
5747 | else if (XMARKER (w->start)->charpos > ZV) | |
5748 | SET_TEXT_POS (start, ZV, ZV_BYTE); | |
5749 | else | |
5750 | SET_TEXT_POS_FROM_MARKER (start, w->start); | |
5751 | ||
12c8b416 GM |
5752 | start_display (&it, w, start); |
5753 | move_it_vertically (&it, height); | |
c8bc6f65 | 5754 | bottom_y = line_bottom_y (&it); |
12c8b416 | 5755 | |
1de65f51 RS |
5756 | /* rms: On a non-window display, |
5757 | the value of it.vpos at the bottom of the screen | |
5758 | seems to be 1 larger than window_box_height (w). | |
5759 | This kludge fixes a bug whereby (move-to-window-line -1) | |
5760 | when ZV is on the last screen line | |
5761 | moves to the previous screen line instead of the last one. */ | |
5762 | if (! FRAME_WINDOW_P (XFRAME (w->frame))) | |
5763 | height++; | |
5764 | ||
12c8b416 GM |
5765 | /* Add in empty lines at the bottom of the window. */ |
5766 | if (bottom_y < height) | |
5767 | { | |
949cf20f | 5768 | int uy = FRAME_LINE_HEIGHT (it.f); |
c8bc6f65 | 5769 | it.vpos += (height - bottom_y + uy - 1) / uy; |
12c8b416 GM |
5770 | } |
5771 | ||
c8bc6f65 GM |
5772 | if (old_buffer) |
5773 | set_buffer_internal (old_buffer); | |
5774 | ||
12c8b416 GM |
5775 | return it.vpos; |
5776 | } | |
5777 | ||
5778 | ||
7ab12479 | 5779 | DEFUN ("recenter", Frecenter, Srecenter, 0, 1, "P", |
fdb82f93 PJ |
5780 | doc: /* Center point in window and redisplay frame. |
5781 | With prefix argument ARG, recenter putting point on screen line ARG | |
5782 | relative to the current window. If ARG is negative, it counts up from the | |
5783 | bottom of the window. (ARG should be less than the height of the window.) | |
5784 | ||
7d1d98ee KS |
5785 | If ARG is omitted or nil, erase the entire frame and then redraw with point |
5786 | in the center of the current window. If `auto-resize-tool-bars' is set to | |
5787 | `grow-only', this resets the tool-bar's height to the minimum height needed. | |
5788 | ||
fdb82f93 PJ |
5789 | Just C-u as prefix means put point in the center of the window |
5790 | and redisplay normally--don't erase and redraw the frame. */) | |
5791 | (arg) | |
413430c5 | 5792 | register Lisp_Object arg; |
7ab12479 | 5793 | { |
6df47b59 | 5794 | struct window *w = XWINDOW (selected_window); |
478292ed RS |
5795 | struct buffer *buf = XBUFFER (w->buffer); |
5796 | struct buffer *obuf = current_buffer; | |
6df47b59 GM |
5797 | int center_p = 0; |
5798 | int charpos, bytepos; | |
f6b43440 RS |
5799 | int iarg; |
5800 | int this_scroll_margin; | |
7ab12479 | 5801 | |
0fa5d25b RS |
5802 | /* If redisplay is suppressed due to an error, try again. */ |
5803 | obuf->display_error_modiff = 0; | |
5804 | ||
413430c5 | 5805 | if (NILP (arg)) |
7ab12479 | 5806 | { |
f02d6d5c KH |
5807 | int i; |
5808 | ||
5809 | /* Invalidate pixel data calculated for all compositions. */ | |
5810 | for (i = 0; i < n_compositions; i++) | |
5811 | composition_table[i]->font = NULL; | |
7ab12479 | 5812 | |
7d1d98ee KS |
5813 | WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1; |
5814 | ||
5815 | Fredraw_frame (WINDOW_FRAME (w)); | |
5816 | SET_FRAME_GARBAGED (WINDOW_XFRAME (w)); | |
6df47b59 | 5817 | center_p = 1; |
7ab12479 | 5818 | } |
413430c5 | 5819 | else if (CONSP (arg)) /* Just C-u. */ |
6df47b59 | 5820 | center_p = 1; |
7ab12479 JB |
5821 | else |
5822 | { | |
413430c5 | 5823 | arg = Fprefix_numeric_value (arg); |
b7826503 | 5824 | CHECK_NUMBER (arg); |
ae12ecd7 | 5825 | iarg = XINT (arg); |
7ab12479 JB |
5826 | } |
5827 | ||
478292ed | 5828 | set_buffer_internal (buf); |
7ab12479 | 5829 | |
f6b43440 RS |
5830 | /* Do this after making BUF current |
5831 | in case scroll_margin is buffer-local. */ | |
5832 | this_scroll_margin = max (0, scroll_margin); | |
5833 | this_scroll_margin = min (this_scroll_margin, | |
5834 | XFASTINT (w->total_lines) / 4); | |
5835 | ||
521b203e | 5836 | /* Handle centering on a graphical frame specially. Such frames can |
6df47b59 GM |
5837 | have variable-height lines and centering point on the basis of |
5838 | line counts would lead to strange effects. */ | |
521b203e | 5839 | if (FRAME_WINDOW_P (XFRAME (w->frame))) |
6df47b59 | 5840 | { |
6df47b59 GM |
5841 | if (center_p) |
5842 | { | |
521b203e GM |
5843 | struct it it; |
5844 | struct text_pos pt; | |
177c0ea7 | 5845 | |
521b203e GM |
5846 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5847 | start_display (&it, w, pt); | |
f204989e | 5848 | move_it_vertically_backward (&it, window_box_height (w) / 2); |
521b203e GM |
5849 | charpos = IT_CHARPOS (it); |
5850 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5851 | } |
f6b43440 | 5852 | else if (iarg < 0) |
6df47b59 | 5853 | { |
521b203e GM |
5854 | struct it it; |
5855 | struct text_pos pt; | |
f6b43440 | 5856 | int nlines = -iarg; |
f204989e KS |
5857 | int extra_line_spacing; |
5858 | int h = window_box_height (w); | |
177c0ea7 | 5859 | |
f6b43440 RS |
5860 | iarg = - max (-iarg, this_scroll_margin); |
5861 | ||
521b203e GM |
5862 | SET_TEXT_POS (pt, PT, PT_BYTE); |
5863 | start_display (&it, w, pt); | |
f204989e KS |
5864 | |
5865 | /* Be sure we have the exact height of the full line containing PT. */ | |
5866 | move_it_by_lines (&it, 0, 1); | |
521b203e | 5867 | |
d466fa4d | 5868 | /* The amount of pixels we have to move back is the window |
521b203e GM |
5869 | height minus what's displayed in the line containing PT, |
5870 | and the lines below. */ | |
f204989e KS |
5871 | it.current_y = 0; |
5872 | it.vpos = 0; | |
d466fa4d GM |
5873 | move_it_by_lines (&it, nlines, 1); |
5874 | ||
f204989e KS |
5875 | if (it.vpos == nlines) |
5876 | h -= it.current_y; | |
5877 | else | |
5878 | { | |
5879 | /* Last line has no newline */ | |
5880 | h -= line_bottom_y (&it); | |
5881 | it.vpos++; | |
5882 | } | |
5883 | ||
5884 | /* Don't reserve space for extra line spacing of last line. */ | |
5885 | extra_line_spacing = it.max_extra_line_spacing; | |
d466fa4d GM |
5886 | |
5887 | /* If we can't move down NLINES lines because we hit | |
5888 | the end of the buffer, count in some empty lines. */ | |
5889 | if (it.vpos < nlines) | |
f204989e KS |
5890 | { |
5891 | nlines -= it.vpos; | |
5892 | extra_line_spacing = it.extra_line_spacing; | |
5893 | h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing); | |
5894 | } | |
5895 | if (h <= 0) | |
5896 | return Qnil; | |
201c831a | 5897 | |
f204989e | 5898 | /* Now find the new top line (starting position) of the window. */ |
521b203e | 5899 | start_display (&it, w, pt); |
f204989e KS |
5900 | it.current_y = 0; |
5901 | move_it_vertically_backward (&it, h); | |
5902 | ||
5903 | /* If extra line spacing is present, we may move too far | |
5904 | back. This causes the last line to be only partially | |
5905 | visible (which triggers redisplay to recenter that line | |
5906 | in the middle), so move forward. | |
5907 | But ignore extra line spacing on last line, as it is not | |
5908 | considered to be part of the visible height of the line. | |
5909 | */ | |
5910 | h += extra_line_spacing; | |
5911 | while (-it.current_y > h) | |
5912 | move_it_by_lines (&it, 1, 1); | |
5913 | ||
521b203e GM |
5914 | charpos = IT_CHARPOS (it); |
5915 | bytepos = IT_BYTEPOS (it); | |
6df47b59 | 5916 | } |
521b203e GM |
5917 | else |
5918 | { | |
5919 | struct position pos; | |
f6b43440 | 5920 | |
f6b43440 RS |
5921 | iarg = max (iarg, this_scroll_margin); |
5922 | ||
5923 | pos = *vmotion (PT, -iarg, w); | |
521b203e GM |
5924 | charpos = pos.bufpos; |
5925 | bytepos = pos.bytepos; | |
5926 | } | |
5927 | } | |
5928 | else | |
5929 | { | |
5930 | struct position pos; | |
5931 | int ht = window_internal_height (w); | |
5932 | ||
5933 | if (center_p) | |
50763364 | 5934 | iarg = ht / 2; |
f567c488 KS |
5935 | else if (iarg < 0) |
5936 | iarg += ht; | |
f6b43440 RS |
5937 | |
5938 | /* Don't let it get into the margin at either top or bottom. */ | |
5939 | iarg = max (iarg, this_scroll_margin); | |
5940 | iarg = min (iarg, ht - this_scroll_margin - 1); | |
177c0ea7 | 5941 | |
f6b43440 | 5942 | pos = *vmotion (PT, - iarg, w); |
6df47b59 GM |
5943 | charpos = pos.bufpos; |
5944 | bytepos = pos.bytepos; | |
5945 | } | |
5946 | ||
5947 | /* Set the new window start. */ | |
5948 | set_marker_both (w->start, w->buffer, charpos, bytepos); | |
2f3cad6c | 5949 | w->window_end_valid = Qnil; |
177c0ea7 | 5950 | |
95605b1b RS |
5951 | w->optional_new_start = Qt; |
5952 | ||
6df47b59 GM |
5953 | if (bytepos == BEGV_BYTE || FETCH_BYTE (bytepos - 1) == '\n') |
5954 | w->start_at_line_beg = Qt; | |
5955 | else | |
5956 | w->start_at_line_beg = Qnil; | |
177c0ea7 | 5957 | |
478292ed | 5958 | set_buffer_internal (obuf); |
7ab12479 JB |
5959 | return Qnil; |
5960 | } | |
b7617575 GM |
5961 | |
5962 | ||
81fe0836 | 5963 | DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height, |
fdb82f93 PJ |
5964 | 0, 1, 0, |
5965 | doc: /* Return the height in lines of the text display area of WINDOW. | |
c85322d0 | 5966 | WINDOW defaults to the selected window. |
fdb82f93 PJ |
5967 | This doesn't include the mode-line (or header-line if any) or any |
5968 | partial-height lines in the text display area. */) | |
5969 | (window) | |
81fe0836 MB |
5970 | Lisp_Object window; |
5971 | { | |
5972 | struct window *w = decode_window (window); | |
5973 | int pixel_height = window_box_height (w); | |
949cf20f | 5974 | int line_height = pixel_height / FRAME_LINE_HEIGHT (XFRAME (w->frame)); |
81fe0836 MB |
5975 | return make_number (line_height); |
5976 | } | |
5977 | ||
5978 | ||
7ab12479 JB |
5979 | \f |
5980 | DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line, | |
fdb82f93 PJ |
5981 | 1, 1, "P", |
5982 | doc: /* Position point relative to window. | |
5983 | With no argument, position point at center of window. | |
5984 | An argument specifies vertical position within the window; | |
5985 | zero means top of window, negative means relative to bottom of window. */) | |
5986 | (arg) | |
b7617575 | 5987 | Lisp_Object arg; |
7ab12479 | 5988 | { |
b7617575 GM |
5989 | struct window *w = XWINDOW (selected_window); |
5990 | int lines, start; | |
540b6aa0 | 5991 | Lisp_Object window; |
f6b43440 RS |
5992 | #if 0 |
5993 | int this_scroll_margin; | |
5994 | #endif | |
7ab12479 | 5995 | |
b7617575 | 5996 | window = selected_window; |
7ab12479 JB |
5997 | start = marker_position (w->start); |
5998 | if (start < BEGV || start > ZV) | |
5999 | { | |
b7617575 | 6000 | int height = window_internal_height (w); |
cd2be1dd | 6001 | Fvertical_motion (make_number (- (height / 2)), window); |
b73ea88e | 6002 | set_marker_both (w->start, w->buffer, PT, PT_BYTE); |
7ab12479 JB |
6003 | w->start_at_line_beg = Fbolp (); |
6004 | w->force_start = Qt; | |
6005 | } | |
6006 | else | |
b73ea88e | 6007 | Fgoto_char (w->start); |
7ab12479 | 6008 | |
b7617575 | 6009 | lines = displayed_window_lines (w); |
f6b43440 RS |
6010 | |
6011 | #if 0 | |
6012 | this_scroll_margin = max (0, scroll_margin); | |
6013 | this_scroll_margin = min (this_scroll_margin, lines / 4); | |
6014 | #endif | |
6015 | ||
b7617575 GM |
6016 | if (NILP (arg)) |
6017 | XSETFASTINT (arg, lines / 2); | |
6018 | else | |
6019 | { | |
f6b43440 RS |
6020 | int iarg = XINT (Fprefix_numeric_value (arg)); |
6021 | ||
6022 | if (iarg < 0) | |
6023 | iarg = iarg + lines; | |
6024 | ||
6025 | #if 0 /* This code would prevent move-to-window-line from moving point | |
6026 | to a place inside the scroll margins (which would cause the | |
6027 | next redisplay to scroll). I wrote this code, but then concluded | |
6028 | it is probably better not to install it. However, it is here | |
6029 | inside #if 0 so as not to lose it. -- rms. */ | |
6030 | ||
6031 | /* Don't let it get into the margin at either top or bottom. */ | |
6032 | iarg = max (iarg, this_scroll_margin); | |
6033 | iarg = min (iarg, lines - this_scroll_margin - 1); | |
6034 | #endif | |
6035 | ||
6036 | arg = make_number (iarg); | |
b7617575 GM |
6037 | } |
6038 | ||
c8bc6f65 | 6039 | /* Skip past a partially visible first line. */ |
163784df | 6040 | if (w->vscroll) |
163784df MB |
6041 | XSETINT (arg, XINT (arg) + 1); |
6042 | ||
540b6aa0 | 6043 | return Fvertical_motion (arg, window); |
7ab12479 | 6044 | } |
5500c422 GM |
6045 | |
6046 | ||
7ab12479 | 6047 | \f |
5500c422 GM |
6048 | /*********************************************************************** |
6049 | Window Configuration | |
6050 | ***********************************************************************/ | |
6051 | ||
7ab12479 JB |
6052 | struct save_window_data |
6053 | { | |
d0fdb6da | 6054 | EMACS_UINT size; |
7ab12479 | 6055 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
bdc727bf | 6056 | Lisp_Object selected_frame; |
7ab12479 JB |
6057 | Lisp_Object current_window; |
6058 | Lisp_Object current_buffer; | |
6059 | Lisp_Object minibuf_scroll_window; | |
3f49fddc | 6060 | Lisp_Object minibuf_selected_window; |
7ab12479 | 6061 | Lisp_Object root_window; |
bdc727bf | 6062 | Lisp_Object focus_frame; |
cbff28e8 RS |
6063 | /* A vector, each of whose elements is a struct saved_window |
6064 | for one window. */ | |
7ab12479 | 6065 | Lisp_Object saved_windows; |
b05b4e27 SM |
6066 | |
6067 | /* All fields above are traced by the GC. | |
6068 | From `fame-cols' down, the fields are ignored by the GC. */ | |
6069 | ||
6070 | int frame_cols, frame_lines, frame_menu_bar_lines; | |
6071 | int frame_tool_bar_lines; | |
6072 | /* Record the values of window-min-width and window-min-height | |
6073 | so that window sizes remain consistent with them. */ | |
6074 | int min_width, min_height; | |
7ab12479 | 6075 | }; |
ff06df24 | 6076 | |
cbff28e8 | 6077 | /* This is saved as a Lisp_Vector */ |
7ab12479 | 6078 | struct saved_window |
ea68264b GM |
6079 | { |
6080 | /* these first two must agree with struct Lisp_Vector in lisp.h */ | |
d0fdb6da | 6081 | EMACS_UINT size; |
ea68264b | 6082 | struct Lisp_Vector *next_from_Lisp_Vector_struct; |
7ab12479 | 6083 | |
ea68264b GM |
6084 | Lisp_Object window; |
6085 | Lisp_Object buffer, start, pointm, mark; | |
949cf20f KS |
6086 | Lisp_Object left_col, top_line, total_cols, total_lines; |
6087 | Lisp_Object hscroll, min_hscroll; | |
ea68264b GM |
6088 | Lisp_Object parent, prev; |
6089 | Lisp_Object start_at_line_beg; | |
6090 | Lisp_Object display_table; | |
949cf20f KS |
6091 | Lisp_Object orig_top_line, orig_total_lines; |
6092 | Lisp_Object left_margin_cols, right_margin_cols; | |
6093 | Lisp_Object left_fringe_width, right_fringe_width, fringes_outside_margins; | |
6094 | Lisp_Object scroll_bar_width, vertical_scroll_bar_type; | |
6ad0381c | 6095 | Lisp_Object dedicated; |
ea68264b GM |
6096 | }; |
6097 | ||
7ab12479 JB |
6098 | #define SAVED_WINDOW_N(swv,n) \ |
6099 | ((struct saved_window *) (XVECTOR ((swv)->contents[(n)]))) | |
6100 | ||
6101 | DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0, | |
fdb82f93 PJ |
6102 | doc: /* Return t if OBJECT is a window-configuration object. */) |
6103 | (object) | |
413430c5 | 6104 | Lisp_Object object; |
7ab12479 | 6105 | { |
6ad0381c | 6106 | return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil; |
7ab12479 JB |
6107 | } |
6108 | ||
3f8ab7bd | 6109 | DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0, |
fdb82f93 PJ |
6110 | doc: /* Return the frame that CONFIG, a window-configuration object, is about. */) |
6111 | (config) | |
3f8ab7bd RS |
6112 | Lisp_Object config; |
6113 | { | |
6114 | register struct save_window_data *data; | |
6115 | struct Lisp_Vector *saved_windows; | |
6116 | ||
663fbbba | 6117 | CHECK_WINDOW_CONFIGURATION (config); |
3f8ab7bd RS |
6118 | |
6119 | data = (struct save_window_data *) XVECTOR (config); | |
6120 | saved_windows = XVECTOR (data->saved_windows); | |
6121 | return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; | |
6122 | } | |
6123 | ||
d5b2799e | 6124 | DEFUN ("set-window-configuration", Fset_window_configuration, |
fdb82f93 PJ |
6125 | Sset_window_configuration, 1, 1, 0, |
6126 | doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION. | |
6127 | CONFIGURATION must be a value previously returned | |
6128 | by `current-window-configuration' (which see). | |
6129 | If CONFIGURATION was made from a frame that is now deleted, | |
6130 | only frame-independent values can be restored. In this case, | |
6131 | the return value is nil. Otherwise the value is t. */) | |
6132 | (configuration) | |
2f83aebe | 6133 | Lisp_Object configuration; |
7ab12479 | 6134 | { |
7ab12479 JB |
6135 | register struct save_window_data *data; |
6136 | struct Lisp_Vector *saved_windows; | |
7ab12479 | 6137 | Lisp_Object new_current_buffer; |
fd482be5 | 6138 | Lisp_Object frame; |
44fa5b1e | 6139 | FRAME_PTR f; |
72695e47 | 6140 | int old_point = -1; |
7ab12479 | 6141 | |
663fbbba | 6142 | CHECK_WINDOW_CONFIGURATION (configuration); |
7ab12479 | 6143 | |
2f83aebe | 6144 | data = (struct save_window_data *) XVECTOR (configuration); |
7ab12479 JB |
6145 | saved_windows = XVECTOR (data->saved_windows); |
6146 | ||
7ab12479 | 6147 | new_current_buffer = data->current_buffer; |
265a9e55 | 6148 | if (NILP (XBUFFER (new_current_buffer)->name)) |
7ab12479 | 6149 | new_current_buffer = Qnil; |
72695e47 | 6150 | else |
73cadfc1 DK |
6151 | { |
6152 | if (XBUFFER (new_current_buffer) == current_buffer) | |
e67a1dea SM |
6153 | /* The code further down "preserves point" by saving here PT in |
6154 | old_point and then setting it later back into PT. When the | |
6155 | current-selected-window and the final-selected-window both show | |
6156 | the current buffer, this suffers from the problem that the | |
6157 | current PT is the window-point of the current-selected-window, | |
6158 | while the final PT is the point of the final-selected-window, so | |
6159 | this copy from one PT to the other would end up moving the | |
6160 | window-point of the final-selected-window to the window-point of | |
6161 | the current-selected-window. So we have to be careful which | |
6162 | point of the current-buffer we copy into old_point. */ | |
6163 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
6164 | && WINDOWP (selected_window) | |
6165 | && EQ (XWINDOW (selected_window)->buffer, new_current_buffer) | |
6166 | && !EQ (selected_window, data->current_window)) | |
6167 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
6168 | else | |
6169 | old_point = PT; | |
73cadfc1 | 6170 | else |
203eb0aa SM |
6171 | /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of |
6172 | point in new_current_buffer as of the last time this buffer was | |
6173 | used. This can be non-deterministic since it can be changed by | |
6174 | things like jit-lock by mere temporary selection of some random | |
6175 | window that happens to show this buffer. | |
6176 | So if possible we want this arbitrary choice of "which point" to | |
6177 | be the one from the to-be-selected-window so as to prevent this | |
6178 | window's cursor from being copied from another window. */ | |
6179 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer) | |
6180 | /* If current_window = selected_window, its point is in BUF_PT. */ | |
6181 | && !EQ (selected_window, data->current_window)) | |
6182 | old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos; | |
6183 | else | |
6184 | old_point = BUF_PT (XBUFFER (new_current_buffer)); | |
73cadfc1 | 6185 | } |
7ab12479 | 6186 | |
fd482be5 JB |
6187 | frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame; |
6188 | f = XFRAME (frame); | |
177c0ea7 | 6189 | |
fd482be5 JB |
6190 | /* If f is a dead frame, don't bother rebuilding its window tree. |
6191 | However, there is other stuff we should still try to do below. */ | |
6192 | if (FRAME_LIVE_P (f)) | |
7ab12479 | 6193 | { |
fd482be5 JB |
6194 | register struct window *w; |
6195 | register struct saved_window *p; | |
5500c422 GM |
6196 | struct window *root_window; |
6197 | struct window **leaf_windows; | |
6198 | int n_leaf_windows; | |
c4280705 | 6199 | int k, i, n; |
fd482be5 JB |
6200 | |
6201 | /* If the frame has been resized since this window configuration was | |
6202 | made, we change the frame to the size specified in the | |
6203 | configuration, restore the configuration, and then resize it | |
6204 | back. We keep track of the prevailing height in these variables. */ | |
949cf20f KS |
6205 | int previous_frame_lines = FRAME_LINES (f); |
6206 | int previous_frame_cols = FRAME_COLS (f); | |
8f6ea2e9 | 6207 | int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); |
9ea173e8 | 6208 | int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); |
fd482be5 | 6209 | |
d2b35234 RS |
6210 | /* The mouse highlighting code could get screwed up |
6211 | if it runs during this. */ | |
6212 | BLOCK_INPUT; | |
6213 | ||
b05b4e27 SM |
6214 | if (data->frame_lines != previous_frame_lines |
6215 | || data->frame_cols != previous_frame_cols) | |
6216 | change_frame_size (f, data->frame_lines, | |
6217 | data->frame_cols, 0, 0, 0); | |
e3678b64 | 6218 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
b05b4e27 | 6219 | if (data->frame_menu_bar_lines |
8f6ea2e9 | 6220 | != previous_frame_menu_bar_lines) |
b05b4e27 SM |
6221 | x_set_menu_bar_lines (f, make_number (data->frame_menu_bar_lines), |
6222 | make_number (0)); | |
4314246f | 6223 | #ifdef HAVE_WINDOW_SYSTEM |
b05b4e27 | 6224 | if (data->frame_tool_bar_lines |
9ea173e8 | 6225 | != previous_frame_tool_bar_lines) |
b05b4e27 SM |
6226 | x_set_tool_bar_lines (f, make_number (data->frame_tool_bar_lines), |
6227 | make_number (0)); | |
4314246f | 6228 | #endif |
217f2871 | 6229 | #endif |
fd482be5 | 6230 | |
a46c0153 RS |
6231 | /* "Swap out" point from the selected window's buffer |
6232 | into the window itself. (Normally the pointm of the selected | |
6233 | window holds garbage.) We do this now, before | |
719eaeb1 GM |
6234 | restoring the window contents, and prevent it from |
6235 | being done later on when we select a new window. */ | |
596ae0cf RS |
6236 | if (! NILP (XWINDOW (selected_window)->buffer)) |
6237 | { | |
6238 | w = XWINDOW (selected_window); | |
6239 | set_marker_both (w->pointm, | |
6240 | w->buffer, | |
6241 | BUF_PT (XBUFFER (w->buffer)), | |
6242 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
6243 | } | |
6244 | ||
fd482be5 | 6245 | windows_or_buffers_changed++; |
29aeee73 | 6246 | FRAME_WINDOW_SIZES_CHANGED (f) = 1; |
fd482be5 | 6247 | |
5500c422 | 6248 | /* Problem: Freeing all matrices and later allocating them again |
177c0ea7 | 6249 | is a serious redisplay flickering problem. What we would |
5500c422 GM |
6250 | really like to do is to free only those matrices not reused |
6251 | below. */ | |
6252 | root_window = XWINDOW (FRAME_ROOT_WINDOW (f)); | |
6253 | leaf_windows | |
6254 | = (struct window **) alloca (count_windows (root_window) | |
6255 | * sizeof (struct window *)); | |
6256 | n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0); | |
6257 | ||
756b6edc RS |
6258 | /* Temporarily avoid any problems with windows that are smaller |
6259 | than they are supposed to be. */ | |
6260 | window_min_height = 1; | |
6261 | window_min_width = 1; | |
6262 | ||
fd482be5 JB |
6263 | /* Kludge Alert! |
6264 | Mark all windows now on frame as "deleted". | |
6265 | Restoring the new configuration "undeletes" any that are in it. | |
37962e60 | 6266 | |
fd482be5 JB |
6267 | Save their current buffers in their height fields, since we may |
6268 | need it later, if a buffer saved in the configuration is now | |
6269 | dead. */ | |
6270 | delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f))); | |
6271 | ||
6272 | for (k = 0; k < saved_windows->size; k++) | |
6273 | { | |
6274 | p = SAVED_WINDOW_N (saved_windows, k); | |
6275 | w = XWINDOW (p->window); | |
6276 | w->next = Qnil; | |
7ab12479 | 6277 | |
fd482be5 JB |
6278 | if (!NILP (p->parent)) |
6279 | w->parent = SAVED_WINDOW_N (saved_windows, | |
6280 | XFASTINT (p->parent))->window; | |
6281 | else | |
6282 | w->parent = Qnil; | |
7ab12479 | 6283 | |
fd482be5 | 6284 | if (!NILP (p->prev)) |
7ab12479 | 6285 | { |
fd482be5 JB |
6286 | w->prev = SAVED_WINDOW_N (saved_windows, |
6287 | XFASTINT (p->prev))->window; | |
6288 | XWINDOW (w->prev)->next = p->window; | |
6289 | } | |
6290 | else | |
6291 | { | |
6292 | w->prev = Qnil; | |
6293 | if (!NILP (w->parent)) | |
6294 | { | |
949cf20f | 6295 | if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols)) |
fd482be5 JB |
6296 | { |
6297 | XWINDOW (w->parent)->vchild = p->window; | |
6298 | XWINDOW (w->parent)->hchild = Qnil; | |
6299 | } | |
6300 | else | |
6301 | { | |
6302 | XWINDOW (w->parent)->hchild = p->window; | |
6303 | XWINDOW (w->parent)->vchild = Qnil; | |
6304 | } | |
6305 | } | |
6306 | } | |
6307 | ||
6308 | /* If we squirreled away the buffer in the window's height, | |
6309 | restore it now. */ | |
949cf20f KS |
6310 | if (BUFFERP (w->total_lines)) |
6311 | w->buffer = w->total_lines; | |
6312 | w->left_col = p->left_col; | |
6313 | w->top_line = p->top_line; | |
6314 | w->total_cols = p->total_cols; | |
6315 | w->total_lines = p->total_lines; | |
fd482be5 | 6316 | w->hscroll = p->hscroll; |
ea68264b | 6317 | w->min_hscroll = p->min_hscroll; |
fd482be5 | 6318 | w->display_table = p->display_table; |
949cf20f KS |
6319 | w->orig_top_line = p->orig_top_line; |
6320 | w->orig_total_lines = p->orig_total_lines; | |
6321 | w->left_margin_cols = p->left_margin_cols; | |
6322 | w->right_margin_cols = p->right_margin_cols; | |
6323 | w->left_fringe_width = p->left_fringe_width; | |
6324 | w->right_fringe_width = p->right_fringe_width; | |
6325 | w->fringes_outside_margins = p->fringes_outside_margins; | |
6326 | w->scroll_bar_width = p->scroll_bar_width; | |
6327 | w->vertical_scroll_bar_type = p->vertical_scroll_bar_type; | |
6ad0381c | 6328 | w->dedicated = p->dedicated; |
d834a2e9 | 6329 | XSETFASTINT (w->last_modified, 0); |
3cd21523 | 6330 | XSETFASTINT (w->last_overlay_modified, 0); |
fd482be5 JB |
6331 | |
6332 | /* Reinstall the saved buffer and pointers into it. */ | |
6333 | if (NILP (p->buffer)) | |
6334 | w->buffer = p->buffer; | |
6335 | else | |
6336 | { | |
6337 | if (!NILP (XBUFFER (p->buffer)->name)) | |
6338 | /* If saved buffer is alive, install it. */ | |
6339 | { | |
6340 | w->buffer = p->buffer; | |
6341 | w->start_at_line_beg = p->start_at_line_beg; | |
b73ea88e RS |
6342 | set_marker_restricted (w->start, p->start, w->buffer); |
6343 | set_marker_restricted (w->pointm, p->pointm, w->buffer); | |
fd482be5 | 6344 | Fset_marker (XBUFFER (w->buffer)->mark, |
b73ea88e | 6345 | p->mark, w->buffer); |
fd482be5 JB |
6346 | |
6347 | /* As documented in Fcurrent_window_configuration, don't | |
243a5ce6 RS |
6348 | restore the location of point in the buffer which was |
6349 | current when the window configuration was recorded. */ | |
6b54027b RS |
6350 | if (!EQ (p->buffer, new_current_buffer) |
6351 | && XBUFFER (p->buffer) == current_buffer) | |
fd482be5 JB |
6352 | Fgoto_char (w->pointm); |
6353 | } | |
52a68e98 RS |
6354 | else if (NILP (w->buffer) || NILP (XBUFFER (w->buffer)->name)) |
6355 | /* Else unless window has a live buffer, get one. */ | |
7ab12479 | 6356 | { |
fd482be5 JB |
6357 | w->buffer = Fcdr (Fcar (Vbuffer_alist)); |
6358 | /* This will set the markers to beginning of visible | |
6359 | range. */ | |
6360 | set_marker_restricted (w->start, make_number (0), w->buffer); | |
6361 | set_marker_restricted (w->pointm, make_number (0),w->buffer); | |
6362 | w->start_at_line_beg = Qt; | |
7ab12479 JB |
6363 | } |
6364 | else | |
fd482be5 | 6365 | /* Keeping window's old buffer; make sure the markers |
52a68e98 | 6366 | are real. */ |
7ab12479 | 6367 | { |
fd482be5 JB |
6368 | /* Set window markers at start of visible range. */ |
6369 | if (XMARKER (w->start)->buffer == 0) | |
6370 | set_marker_restricted (w->start, make_number (0), | |
6371 | w->buffer); | |
6372 | if (XMARKER (w->pointm)->buffer == 0) | |
b73ea88e RS |
6373 | set_marker_restricted_both (w->pointm, w->buffer, |
6374 | BUF_PT (XBUFFER (w->buffer)), | |
6375 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
fd482be5 | 6376 | w->start_at_line_beg = Qt; |
7ab12479 JB |
6377 | } |
6378 | } | |
6379 | } | |
9ace597f | 6380 | |
fd482be5 | 6381 | FRAME_ROOT_WINDOW (f) = data->root_window; |
719eaeb1 GM |
6382 | /* Prevent "swapping out point" in the old selected window |
6383 | using the buffer that has been restored into it. | |
a46c0153 | 6384 | We already swapped out point that from that window's old buffer. */ |
719eaeb1 | 6385 | selected_window = Qnil; |
a46c0153 RS |
6386 | |
6387 | /* Arrange *not* to restore point in the buffer that was | |
6388 | current when the window configuration was saved. */ | |
243a5ce6 RS |
6389 | if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer)) |
6390 | set_marker_restricted (XWINDOW (data->current_window)->pointm, | |
18787f5e | 6391 | make_number (old_point), |
243a5ce6 | 6392 | XWINDOW (data->current_window)->buffer); |
177c0ea7 | 6393 | |
14d87dc9 | 6394 | Fselect_window (data->current_window, Qnil); |
396a830c RS |
6395 | XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window |
6396 | = selected_window; | |
7ab12479 | 6397 | |
db269683 | 6398 | if (NILP (data->focus_frame) |
017b2bad | 6399 | || (FRAMEP (data->focus_frame) |
db269683 JB |
6400 | && FRAME_LIVE_P (XFRAME (data->focus_frame)))) |
6401 | Fredirect_frame_focus (frame, data->focus_frame); | |
7ab12479 | 6402 | |
fd482be5 JB |
6403 | #if 0 /* I don't understand why this is needed, and it causes problems |
6404 | when the frame's old selected window has been deleted. */ | |
e4e59717 | 6405 | if (f != selected_frame && FRAME_WINDOW_P (f)) |
9a7c6fc3 | 6406 | do_switch_frame (WINDOW_FRAME (XWINDOW (data->root_window)), |
d12f6f83 | 6407 | 0, 0); |
fd482be5 JB |
6408 | #endif |
6409 | ||
6410 | /* Set the screen height to the value it had before this function. */ | |
949cf20f KS |
6411 | if (previous_frame_lines != FRAME_LINES (f) |
6412 | || previous_frame_cols != FRAME_COLS (f)) | |
6413 | change_frame_size (f, previous_frame_lines, previous_frame_cols, | |
2b653806 | 6414 | 0, 0, 0); |
e3678b64 | 6415 | #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS) |
8f6ea2e9 | 6416 | if (previous_frame_menu_bar_lines != FRAME_MENU_BAR_LINES (f)) |
f8ad443a AS |
6417 | x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines), |
6418 | make_number (0)); | |
4314246f | 6419 | #ifdef HAVE_WINDOW_SYSTEM |
9ea173e8 GM |
6420 | if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f)) |
6421 | x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines), | |
6422 | make_number (0)); | |
4314246f | 6423 | #endif |
217f2871 | 6424 | #endif |
d2b35234 | 6425 | |
5500c422 | 6426 | /* Now, free glyph matrices in windows that were not reused. */ |
c4280705 GM |
6427 | for (i = n = 0; i < n_leaf_windows; ++i) |
6428 | { | |
6429 | if (NILP (leaf_windows[i]->buffer)) | |
6430 | { | |
6431 | /* Assert it's not reused as a combination. */ | |
177c0ea7 | 6432 | xassert (NILP (leaf_windows[i]->hchild) |
c4280705 GM |
6433 | && NILP (leaf_windows[i]->vchild)); |
6434 | free_window_matrices (leaf_windows[i]); | |
c4280705 GM |
6435 | } |
6436 | else if (EQ (leaf_windows[i]->buffer, new_current_buffer)) | |
6437 | ++n; | |
6438 | } | |
177c0ea7 | 6439 | |
5500c422 GM |
6440 | adjust_glyphs (f); |
6441 | ||
d2b35234 | 6442 | UNBLOCK_INPUT; |
756b6edc | 6443 | |
478292ed RS |
6444 | /* Fselect_window will have made f the selected frame, so we |
6445 | reselect the proper frame here. Fhandle_switch_frame will change the | |
6446 | selected window too, but that doesn't make the call to | |
6447 | Fselect_window above totally superfluous; it still sets f's | |
6448 | selected window. */ | |
6449 | if (FRAME_LIVE_P (XFRAME (data->selected_frame))) | |
d12f6f83 | 6450 | do_switch_frame (data->selected_frame, 0, 0); |
478292ed RS |
6451 | |
6452 | if (! NILP (Vwindow_configuration_change_hook) | |
6453 | && ! NILP (Vrun_hooks)) | |
6454 | call1 (Vrun_hooks, Qwindow_configuration_change_hook); | |
6455 | } | |
bdc727bf JB |
6456 | |
6457 | if (!NILP (new_current_buffer)) | |
243a5ce6 | 6458 | Fset_buffer (new_current_buffer); |
bdc727bf | 6459 | |
478292ed | 6460 | /* Restore the minimum heights recorded in the configuration. */ |
b05b4e27 SM |
6461 | window_min_height = data->min_height; |
6462 | window_min_width = data->min_width; | |
543f5fb1 | 6463 | |
478292ed | 6464 | Vminibuf_scroll_window = data->minibuf_scroll_window; |
3dbab091 | 6465 | minibuf_selected_window = data->minibuf_selected_window; |
543f5fb1 | 6466 | |
3f8ab7bd | 6467 | return (FRAME_LIVE_P (f) ? Qt : Qnil); |
7ab12479 JB |
6468 | } |
6469 | ||
44fa5b1e | 6470 | /* Mark all windows now on frame as deleted |
7ab12479 JB |
6471 | by setting their buffers to nil. */ |
6472 | ||
fd482be5 | 6473 | void |
7ab12479 JB |
6474 | delete_all_subwindows (w) |
6475 | register struct window *w; | |
6476 | { | |
265a9e55 | 6477 | if (!NILP (w->next)) |
7ab12479 | 6478 | delete_all_subwindows (XWINDOW (w->next)); |
265a9e55 | 6479 | if (!NILP (w->vchild)) |
7ab12479 | 6480 | delete_all_subwindows (XWINDOW (w->vchild)); |
265a9e55 | 6481 | if (!NILP (w->hchild)) |
7ab12479 | 6482 | delete_all_subwindows (XWINDOW (w->hchild)); |
605be8af | 6483 | |
949cf20f | 6484 | w->total_lines = w->buffer; /* See Fset_window_configuration for excuse. */ |
605be8af | 6485 | |
86e48436 RS |
6486 | if (!NILP (w->buffer)) |
6487 | unshow_buffer (w); | |
6488 | ||
605be8af JB |
6489 | /* We set all three of these fields to nil, to make sure that we can |
6490 | distinguish this dead window from any live window. Live leaf | |
6491 | windows will have buffer set, and combination windows will have | |
6492 | vchild or hchild set. */ | |
6493 | w->buffer = Qnil; | |
6494 | w->vchild = Qnil; | |
6495 | w->hchild = Qnil; | |
acf70840 GM |
6496 | |
6497 | Vwindow_list = Qnil; | |
7ab12479 JB |
6498 | } |
6499 | \f | |
6500 | static int | |
6501 | count_windows (window) | |
6502 | register struct window *window; | |
6503 | { | |
6504 | register int count = 1; | |
265a9e55 | 6505 | if (!NILP (window->next)) |
7ab12479 | 6506 | count += count_windows (XWINDOW (window->next)); |
265a9e55 | 6507 | if (!NILP (window->vchild)) |
7ab12479 | 6508 | count += count_windows (XWINDOW (window->vchild)); |
265a9e55 | 6509 | if (!NILP (window->hchild)) |
7ab12479 JB |
6510 | count += count_windows (XWINDOW (window->hchild)); |
6511 | return count; | |
6512 | } | |
6513 | ||
5500c422 | 6514 | |
177c0ea7 | 6515 | /* Fill vector FLAT with leaf windows under W, starting at index I. |
5500c422 GM |
6516 | Value is last index + 1. */ |
6517 | ||
6518 | static int | |
6519 | get_leaf_windows (w, flat, i) | |
6520 | struct window *w; | |
6521 | struct window **flat; | |
6522 | int i; | |
6523 | { | |
6524 | while (w) | |
6525 | { | |
6526 | if (!NILP (w->hchild)) | |
6527 | i = get_leaf_windows (XWINDOW (w->hchild), flat, i); | |
6528 | else if (!NILP (w->vchild)) | |
6529 | i = get_leaf_windows (XWINDOW (w->vchild), flat, i); | |
177c0ea7 | 6530 | else |
5500c422 GM |
6531 | flat[i++] = w; |
6532 | ||
6533 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6534 | } | |
6535 | ||
6536 | return i; | |
6537 | } | |
6538 | ||
6539 | ||
6540 | /* Return a pointer to the glyph W's physical cursor is on. Value is | |
6541 | null if W's current matrix is invalid, so that no meaningfull glyph | |
6542 | can be returned. */ | |
6543 | ||
6544 | struct glyph * | |
6545 | get_phys_cursor_glyph (w) | |
6546 | struct window *w; | |
6547 | { | |
6548 | struct glyph_row *row; | |
6549 | struct glyph *glyph; | |
6550 | ||
6551 | if (w->phys_cursor.vpos >= 0 | |
6552 | && w->phys_cursor.vpos < w->current_matrix->nrows | |
6553 | && (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos), | |
6554 | row->enabled_p) | |
6555 | && row->used[TEXT_AREA] > w->phys_cursor.hpos) | |
6556 | glyph = row->glyphs[TEXT_AREA] + w->phys_cursor.hpos; | |
6557 | else | |
6558 | glyph = NULL; | |
6559 | ||
6560 | return glyph; | |
6561 | } | |
6562 | ||
6563 | ||
7ab12479 JB |
6564 | static int |
6565 | save_window_save (window, vector, i) | |
6566 | Lisp_Object window; | |
6567 | struct Lisp_Vector *vector; | |
6568 | int i; | |
6569 | { | |
6570 | register struct saved_window *p; | |
6571 | register struct window *w; | |
6572 | register Lisp_Object tem; | |
6573 | ||
265a9e55 | 6574 | for (;!NILP (window); window = w->next) |
7ab12479 JB |
6575 | { |
6576 | p = SAVED_WINDOW_N (vector, i); | |
6577 | w = XWINDOW (window); | |
6578 | ||
2a1893f4 | 6579 | XSETFASTINT (w->temslot, i); i++; |
7ab12479 JB |
6580 | p->window = window; |
6581 | p->buffer = w->buffer; | |
949cf20f KS |
6582 | p->left_col = w->left_col; |
6583 | p->top_line = w->top_line; | |
6584 | p->total_cols = w->total_cols; | |
6585 | p->total_lines = w->total_lines; | |
7ab12479 | 6586 | p->hscroll = w->hscroll; |
ea68264b | 6587 | p->min_hscroll = w->min_hscroll; |
7ab12479 | 6588 | p->display_table = w->display_table; |
949cf20f KS |
6589 | p->orig_top_line = w->orig_top_line; |
6590 | p->orig_total_lines = w->orig_total_lines; | |
6591 | p->left_margin_cols = w->left_margin_cols; | |
6592 | p->right_margin_cols = w->right_margin_cols; | |
6593 | p->left_fringe_width = w->left_fringe_width; | |
6594 | p->right_fringe_width = w->right_fringe_width; | |
6595 | p->fringes_outside_margins = w->fringes_outside_margins; | |
6596 | p->scroll_bar_width = w->scroll_bar_width; | |
6597 | p->vertical_scroll_bar_type = w->vertical_scroll_bar_type; | |
6ad0381c | 6598 | p->dedicated = w->dedicated; |
265a9e55 | 6599 | if (!NILP (w->buffer)) |
7ab12479 JB |
6600 | { |
6601 | /* Save w's value of point in the window configuration. | |
6602 | If w is the selected window, then get the value of point | |
6603 | from the buffer; pointm is garbage in the selected window. */ | |
6604 | if (EQ (window, selected_window)) | |
6605 | { | |
6606 | p->pointm = Fmake_marker (); | |
b73ea88e RS |
6607 | set_marker_both (p->pointm, w->buffer, |
6608 | BUF_PT (XBUFFER (w->buffer)), | |
6609 | BUF_PT_BYTE (XBUFFER (w->buffer))); | |
7ab12479 JB |
6610 | } |
6611 | else | |
eeb82665 | 6612 | p->pointm = Fcopy_marker (w->pointm, Qnil); |
7ab12479 | 6613 | |
eeb82665 | 6614 | p->start = Fcopy_marker (w->start, Qnil); |
7ab12479 JB |
6615 | p->start_at_line_beg = w->start_at_line_beg; |
6616 | ||
6617 | tem = XBUFFER (w->buffer)->mark; | |
eeb82665 | 6618 | p->mark = Fcopy_marker (tem, Qnil); |
7ab12479 JB |
6619 | } |
6620 | else | |
6621 | { | |
6622 | p->pointm = Qnil; | |
6623 | p->start = Qnil; | |
6624 | p->mark = Qnil; | |
6625 | p->start_at_line_beg = Qnil; | |
6626 | } | |
6627 | ||
265a9e55 | 6628 | if (NILP (w->parent)) |
7ab12479 JB |
6629 | p->parent = Qnil; |
6630 | else | |
6631 | p->parent = XWINDOW (w->parent)->temslot; | |
6632 | ||
265a9e55 | 6633 | if (NILP (w->prev)) |
7ab12479 JB |
6634 | p->prev = Qnil; |
6635 | else | |
6636 | p->prev = XWINDOW (w->prev)->temslot; | |
6637 | ||
265a9e55 | 6638 | if (!NILP (w->vchild)) |
7ab12479 | 6639 | i = save_window_save (w->vchild, vector, i); |
265a9e55 | 6640 | if (!NILP (w->hchild)) |
7ab12479 JB |
6641 | i = save_window_save (w->hchild, vector, i); |
6642 | } | |
6643 | ||
6644 | return i; | |
6645 | } | |
6646 | ||
a0d76c27 | 6647 | DEFUN ("current-window-configuration", Fcurrent_window_configuration, |
fdb82f93 PJ |
6648 | Scurrent_window_configuration, 0, 1, 0, |
6649 | doc: /* Return an object representing the current window configuration of FRAME. | |
6650 | If FRAME is nil or omitted, use the selected frame. | |
6651 | This describes the number of windows, their sizes and current buffers, | |
6652 | and for each displayed buffer, where display starts, and the positions of | |
6653 | point and mark. An exception is made for point in the current buffer: | |
6654 | its value is -not- saved. | |
6655 | This also records the currently selected frame, and FRAME's focus | |
6656 | redirection (see `redirect-frame-focus'). */) | |
6657 | (frame) | |
44fa5b1e | 6658 | Lisp_Object frame; |
7ab12479 JB |
6659 | { |
6660 | register Lisp_Object tem; | |
6661 | register int n_windows; | |
6662 | register struct save_window_data *data; | |
6663 | register int i; | |
44fa5b1e | 6664 | FRAME_PTR f; |
43bad991 | 6665 | |
44fa5b1e | 6666 | if (NILP (frame)) |
1ae1a37d | 6667 | frame = selected_frame; |
b7826503 | 6668 | CHECK_LIVE_FRAME (frame); |
1ae1a37d | 6669 | f = XFRAME (frame); |
7ab12479 | 6670 | |
44fa5b1e | 6671 | n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f))); |
b05b4e27 SM |
6672 | data = ALLOCATE_PSEUDOVECTOR (struct save_window_data, frame_cols, |
6673 | PVEC_WINDOW_CONFIGURATION); | |
6674 | ||
6675 | data->frame_cols = FRAME_COLS (f); | |
6676 | data->frame_lines = FRAME_LINES (f); | |
6677 | data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f); | |
6678 | data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f); | |
1ae1a37d | 6679 | data->selected_frame = selected_frame; |
44fa5b1e | 6680 | data->current_window = FRAME_SELECTED_WINDOW (f); |
74112613 | 6681 | XSETBUFFER (data->current_buffer, current_buffer); |
3f49fddc | 6682 | data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil; |
3dbab091 | 6683 | data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil; |
44fa5b1e | 6684 | data->root_window = FRAME_ROOT_WINDOW (f); |
bdc727bf | 6685 | data->focus_frame = FRAME_FOCUS_FRAME (f); |
b05b4e27 SM |
6686 | data->min_height = window_min_height; |
6687 | data->min_width = window_min_width; | |
7ab12479 JB |
6688 | tem = Fmake_vector (make_number (n_windows), Qnil); |
6689 | data->saved_windows = tem; | |
6690 | for (i = 0; i < n_windows; i++) | |
6691 | XVECTOR (tem)->contents[i] | |
8a450f0a | 6692 | = Fmake_vector (make_number (VECSIZE (struct saved_window)), Qnil); |
a1d58e5b | 6693 | save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0); |
74112613 | 6694 | XSETWINDOW_CONFIGURATION (tem, data); |
7ab12479 JB |
6695 | return (tem); |
6696 | } | |
6697 | ||
6698 | DEFUN ("save-window-excursion", Fsave_window_excursion, Ssave_window_excursion, | |
fdb82f93 | 6699 | 0, UNEVALLED, 0, |
a0a37a6f LT |
6700 | doc: /* Execute BODY, preserving window sizes and contents. |
6701 | Return the value of the last form in BODY. | |
fdb82f93 PJ |
6702 | Restore which buffer appears in which window, where display starts, |
6703 | and the value of point and mark for each window. | |
6704 | Also restore the choice of selected window. | |
6705 | Also restore which buffer is current. | |
6924dda6 | 6706 | Does not restore the value of point in current buffer. |
7254a30c | 6707 | usage: (save-window-excursion BODY...) */) |
fdb82f93 | 6708 | (args) |
7ab12479 JB |
6709 | Lisp_Object args; |
6710 | { | |
6711 | register Lisp_Object val; | |
aed13378 | 6712 | register int count = SPECPDL_INDEX (); |
7ab12479 JB |
6713 | |
6714 | record_unwind_protect (Fset_window_configuration, | |
43bad991 | 6715 | Fcurrent_window_configuration (Qnil)); |
7ab12479 JB |
6716 | val = Fprogn (args); |
6717 | return unbind_to (count, val); | |
6718 | } | |
5500c422 | 6719 | |
94e16dd5 KS |
6720 | |
6721 | \f | |
6722 | /*********************************************************************** | |
6723 | Window Split Tree | |
6724 | ***********************************************************************/ | |
6725 | ||
6726 | static Lisp_Object | |
c16e1cc3 | 6727 | window_tree (w) |
94e16dd5 KS |
6728 | struct window *w; |
6729 | { | |
6730 | Lisp_Object tail = Qnil; | |
6731 | Lisp_Object result = Qnil; | |
6732 | ||
6733 | while (w) | |
6734 | { | |
6735 | Lisp_Object wn; | |
6736 | ||
6737 | XSETWINDOW (wn, w); | |
6738 | if (!NILP (w->hchild)) | |
6739 | wn = Fcons (Qnil, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6740 | window_tree (XWINDOW (w->hchild)))); |
94e16dd5 KS |
6741 | else if (!NILP (w->vchild)) |
6742 | wn = Fcons (Qt, Fcons (Fwindow_edges (wn), | |
c16e1cc3 | 6743 | window_tree (XWINDOW (w->vchild)))); |
94e16dd5 KS |
6744 | |
6745 | if (NILP (result)) | |
6746 | { | |
6747 | result = tail = Fcons (wn, Qnil); | |
6748 | } | |
6749 | else | |
6750 | { | |
6751 | XSETCDR (tail, Fcons (wn, Qnil)); | |
6752 | tail = XCDR (tail); | |
6753 | } | |
6754 | ||
6755 | w = NILP (w->next) ? 0 : XWINDOW (w->next); | |
6756 | } | |
6757 | ||
6758 | return result; | |
6759 | } | |
6760 | ||
6761 | ||
6762 | ||
c16e1cc3 | 6763 | DEFUN ("window-tree", Fwindow_tree, Swindow_tree, |
94e16dd5 | 6764 | 0, 1, 0, |
c16e1cc3 | 6765 | doc: /* Return the window tree for frame FRAME. |
94e16dd5 KS |
6766 | |
6767 | The return value is a list of the form (ROOT MINI), where ROOT | |
c16e1cc3 | 6768 | represents the window tree of the frame's root window, and MINI |
94e16dd5 KS |
6769 | is the frame's minibuffer window. |
6770 | ||
6771 | If the root window is not split, ROOT is the root window itself. | |
6772 | Otherwise, ROOT is a list (DIR EDGES W1 W2 ...) where DIR is nil for a | |
008171a4 | 6773 | horizontal split, and t for a vertical split, EDGES gives the combined |
94e16dd5 KS |
6774 | size and position of the subwindows in the split, and the rest of the |
6775 | elements are the subwindows in the split. Each of the subwindows may | |
6776 | again be a window or a list representing a window split, and so on. | |
6777 | EDGES is a list \(LEFT TOP RIGHT BOTTOM) as returned by `window-edges'. | |
6778 | ||
6779 | If FRAME is nil or omitted, return information on the currently | |
6780 | selected frame. */) | |
6781 | (frame) | |
6782 | Lisp_Object frame; | |
6783 | { | |
94e16dd5 KS |
6784 | FRAME_PTR f; |
6785 | ||
6786 | if (NILP (frame)) | |
6787 | frame = selected_frame; | |
6788 | ||
6789 | CHECK_FRAME (frame); | |
6790 | f = XFRAME (frame); | |
6791 | ||
6792 | if (!FRAME_LIVE_P (f)) | |
6793 | return Qnil; | |
6794 | ||
c16e1cc3 | 6795 | return window_tree (XWINDOW (FRAME_ROOT_WINDOW (f))); |
94e16dd5 KS |
6796 | } |
6797 | ||
5500c422 GM |
6798 | \f |
6799 | /*********************************************************************** | |
6800 | Marginal Areas | |
6801 | ***********************************************************************/ | |
6802 | ||
6803 | DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins, | |
a7bdfc08 | 6804 | 2, 3, 0, |
fdb82f93 | 6805 | doc: /* Set width of marginal areas of window WINDOW. |
e661376d KS |
6806 | If WINDOW is nil, set margins of the currently selected window. |
6807 | Second arg LEFT-WIDTH specifies the number of character cells to | |
6808 | reserve for the left marginal area. Optional third arg RIGHT-WIDTH | |
6809 | does the same for the right marginal area. A nil width parameter | |
6810 | means no margin. */) | |
c10ce82e JB |
6811 | (window, left_width, right_width) |
6812 | Lisp_Object window, left_width, right_width; | |
5500c422 GM |
6813 | { |
6814 | struct window *w = decode_window (window); | |
5500c422 | 6815 | |
c2c3f202 KS |
6816 | /* Translate negative or zero widths to nil. |
6817 | Margins that are too wide have to be checked elsewhere. */ | |
6818 | ||
c10ce82e | 6819 | if (!NILP (left_width)) |
c2c3f202 | 6820 | { |
c10ce82e JB |
6821 | CHECK_NUMBER (left_width); |
6822 | if (XINT (left_width) <= 0) | |
6823 | left_width = Qnil; | |
c2c3f202 | 6824 | } |
5500c422 | 6825 | |
c10ce82e | 6826 | if (!NILP (right_width)) |
c2c3f202 | 6827 | { |
c10ce82e JB |
6828 | CHECK_NUMBER (right_width); |
6829 | if (XINT (right_width) <= 0) | |
6830 | right_width = Qnil; | |
c2c3f202 | 6831 | } |
5500c422 | 6832 | |
c10ce82e JB |
6833 | if (!EQ (w->left_margin_cols, left_width) |
6834 | || !EQ (w->right_margin_cols, right_width)) | |
949cf20f | 6835 | { |
c10ce82e JB |
6836 | w->left_margin_cols = left_width; |
6837 | w->right_margin_cols = right_width; | |
949cf20f KS |
6838 | |
6839 | adjust_window_margins (w); | |
6840 | ||
6841 | ++windows_or_buffers_changed; | |
6842 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6843 | } | |
5500c422 | 6844 | |
5500c422 GM |
6845 | return Qnil; |
6846 | } | |
6847 | ||
6848 | ||
6849 | DEFUN ("window-margins", Fwindow_margins, Swindow_margins, | |
6850 | 0, 1, 0, | |
fdb82f93 PJ |
6851 | doc: /* Get width of marginal areas of window WINDOW. |
6852 | If WINDOW is omitted or nil, use the currently selected window. | |
6853 | Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH). | |
6854 | If a marginal area does not exist, its width will be returned | |
6855 | as nil. */) | |
6856 | (window) | |
5500c422 GM |
6857 | Lisp_Object window; |
6858 | { | |
6859 | struct window *w = decode_window (window); | |
949cf20f KS |
6860 | return Fcons (w->left_margin_cols, w->right_margin_cols); |
6861 | } | |
6862 | ||
6863 | ||
6864 | \f | |
6865 | /*********************************************************************** | |
6866 | Fringes | |
6867 | ***********************************************************************/ | |
6868 | ||
6869 | DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes, | |
6870 | 2, 4, 0, | |
62c2f759 | 6871 | doc: /* Set the fringe widths of window WINDOW. |
62c2f759 LK |
6872 | If WINDOW is nil, set the fringe widths of the currently selected |
6873 | window. | |
e661376d KS |
6874 | Second arg LEFT-WIDTH specifies the number of pixels to reserve for |
6875 | the left fringe. Optional third arg RIGHT-WIDTH specifies the right | |
6876 | fringe width. If a fringe width arg is nil, that means to use the | |
6877 | frame's default fringe width. Default fringe widths can be set with | |
6878 | the command `set-fringe-style'. | |
6879 | If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes | |
62c2f759 LK |
6880 | outside of the display margins. By default, fringes are drawn between |
6881 | display marginal areas and the text area. */) | |
c10ce82e JB |
6882 | (window, left_width, right_width, outside_margins) |
6883 | Lisp_Object window, left_width, right_width, outside_margins; | |
949cf20f KS |
6884 | { |
6885 | struct window *w = decode_window (window); | |
6886 | ||
c10ce82e JB |
6887 | if (!NILP (left_width)) |
6888 | CHECK_NATNUM (left_width); | |
6889 | if (!NILP (right_width)) | |
6890 | CHECK_NATNUM (right_width); | |
5a857365 | 6891 | |
017e297e | 6892 | /* Do nothing on a tty. */ |
d46c6df5 NR |
6893 | if (FRAME_WINDOW_P (WINDOW_XFRAME (w)) |
6894 | && (!EQ (w->left_fringe_width, left_width) | |
6895 | || !EQ (w->right_fringe_width, right_width) | |
6896 | || !EQ (w->fringes_outside_margins, outside_margins))) | |
949cf20f | 6897 | { |
c10ce82e JB |
6898 | w->left_fringe_width = left_width; |
6899 | w->right_fringe_width = right_width; | |
949cf20f KS |
6900 | w->fringes_outside_margins = outside_margins; |
6901 | ||
6902 | adjust_window_margins (w); | |
6903 | ||
6904 | clear_glyph_matrix (w->current_matrix); | |
6905 | w->window_end_valid = Qnil; | |
6906 | ||
6907 | ++windows_or_buffers_changed; | |
6908 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6909 | } | |
6910 | ||
6911 | return Qnil; | |
6912 | } | |
6913 | ||
6914 | ||
6915 | DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes, | |
6916 | 0, 1, 0, | |
6917 | doc: /* Get width of fringes of window WINDOW. | |
6918 | If WINDOW is omitted or nil, use the currently selected window. | |
467e281a | 6919 | Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */) |
949cf20f KS |
6920 | (window) |
6921 | Lisp_Object window; | |
6922 | { | |
6923 | struct window *w = decode_window (window); | |
d46c6df5 | 6924 | |
949cf20f KS |
6925 | return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w)), |
6926 | Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w)), | |
d46c6df5 NR |
6927 | Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) |
6928 | ? Qt : Qnil), Qnil))); | |
949cf20f KS |
6929 | } |
6930 | ||
6931 | ||
6932 | \f | |
6933 | /*********************************************************************** | |
6934 | Scroll bars | |
6935 | ***********************************************************************/ | |
6936 | ||
6937 | DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars, Sset_window_scroll_bars, | |
6938 | 2, 4, 0, | |
6939 | doc: /* Set width and type of scroll bars of window WINDOW. | |
6940 | If window is nil, set scroll bars of the currently selected window. | |
6941 | Second parameter WIDTH specifies the pixel width for the scroll bar; | |
6942 | this is automatically adjusted to a multiple of the frame column width. | |
6943 | Third parameter VERTICAL-TYPE specifies the type of the vertical scroll | |
6944 | bar: left, right, or nil. | |
2f71b5ea | 6945 | If WIDTH is nil, use the frame's scroll-bar width. |
a53d44a8 JB |
6946 | If VERTICAL-TYPE is t, use the frame's scroll-bar type. |
6947 | Fourth parameter HORIZONTAL-TYPE is currently unused. */) | |
79fd290e JB |
6948 | (window, width, vertical_type, horizontal_type) |
6949 | Lisp_Object window, width, vertical_type, horizontal_type; | |
949cf20f KS |
6950 | { |
6951 | struct window *w = decode_window (window); | |
6952 | ||
6953 | if (!NILP (width)) | |
0f8fe9a2 SM |
6954 | { |
6955 | CHECK_NATNUM (width); | |
949cf20f | 6956 | |
0f8fe9a2 SM |
6957 | if (XINT (width) == 0) |
6958 | vertical_type = Qnil; | |
6959 | } | |
949cf20f | 6960 | |
413a79ad | 6961 | if (!(NILP (vertical_type) |
0cc1039f | 6962 | || EQ (vertical_type, Qleft) |
2f71b5ea MY |
6963 | || EQ (vertical_type, Qright) |
6964 | || EQ (vertical_type, Qt))) | |
6965 | error ("Invalid type of vertical scroll bar"); | |
6966 | ||
949cf20f KS |
6967 | if (!EQ (w->scroll_bar_width, width) |
6968 | || !EQ (w->vertical_scroll_bar_type, vertical_type)) | |
6969 | { | |
6970 | w->scroll_bar_width = width; | |
6971 | w->vertical_scroll_bar_type = vertical_type; | |
6972 | ||
6973 | adjust_window_margins (w); | |
6974 | ||
6975 | clear_glyph_matrix (w->current_matrix); | |
6976 | w->window_end_valid = Qnil; | |
6977 | ||
6978 | ++windows_or_buffers_changed; | |
6979 | adjust_glyphs (XFRAME (WINDOW_FRAME (w))); | |
6980 | } | |
6981 | ||
6982 | return Qnil; | |
6983 | } | |
6984 | ||
6985 | ||
6986 | DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars, | |
6987 | 0, 1, 0, | |
6988 | doc: /* Get width and type of scroll bars of window WINDOW. | |
6989 | If WINDOW is omitted or nil, use the currently selected window. | |
12853c58 KS |
6990 | Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE). |
6991 | If WIDTH is nil or TYPE is t, the window is using the frame's corresponding | |
6992 | value. */) | |
949cf20f KS |
6993 | (window) |
6994 | Lisp_Object window; | |
6995 | { | |
6996 | struct window *w = decode_window (window); | |
6997 | return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6998 | ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w) | |
6999 | : WINDOW_SCROLL_BAR_AREA_WIDTH (w))), | |
7000 | Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w)), | |
7001 | Fcons (w->vertical_scroll_bar_type, | |
7002 | Fcons (Qnil, Qnil)))); | |
5500c422 GM |
7003 | } |
7004 | ||
7005 | ||
7ab12479 | 7006 | \f |
5500c422 GM |
7007 | /*********************************************************************** |
7008 | Smooth scrolling | |
7009 | ***********************************************************************/ | |
7010 | ||
0cc1039f | 7011 | DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0, |
fdb82f93 PJ |
7012 | doc: /* Return the amount by which WINDOW is scrolled vertically. |
7013 | Use the selected window if WINDOW is nil or omitted. | |
0cc1039f | 7014 | Normally, value is a multiple of the canonical character height of WINDOW; |
8cd0d661 | 7015 | optional second arg PIXELS-P means value is measured in pixels. */) |
0cc1039f KS |
7016 | (window, pixels_p) |
7017 | Lisp_Object window, pixels_p; | |
5500c422 | 7018 | { |
47004952 | 7019 | Lisp_Object result; |
5500c422 GM |
7020 | struct frame *f; |
7021 | struct window *w; | |
177c0ea7 | 7022 | |
5500c422 GM |
7023 | if (NILP (window)) |
7024 | window = selected_window; | |
47004952 | 7025 | else |
b7826503 | 7026 | CHECK_WINDOW (window); |
5500c422 GM |
7027 | w = XWINDOW (window); |
7028 | f = XFRAME (w->frame); | |
177c0ea7 | 7029 | |
5500c422 | 7030 | if (FRAME_WINDOW_P (f)) |
0cc1039f KS |
7031 | result = (NILP (pixels_p) |
7032 | ? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll) | |
7033 | : make_number (-w->vscroll)); | |
5500c422 | 7034 | else |
47004952 GM |
7035 | result = make_number (0); |
7036 | return result; | |
5500c422 GM |
7037 | } |
7038 | ||
7039 | ||
7040 | DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll, | |
0cc1039f | 7041 | 2, 3, 0, |
fdb82f93 | 7042 | doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL. |
0cc1039f KS |
7043 | WINDOW nil means use the selected window. Normally, VSCROLL is a |
7044 | non-negative multiple of the canonical character height of WINDOW; | |
8cd0d661 | 7045 | optional third arg PIXELS-P non-nil means that VSCROLL is in pixels. |
a0a37a6f LT |
7046 | If PIXELS-P is nil, VSCROLL may have to be rounded so that it |
7047 | corresponds to an integral number of pixels. The return value is the | |
7048 | result of this rounding. | |
7049 | If PIXELS-P is non-nil, the return value is VSCROLL. */) | |
0cc1039f KS |
7050 | (window, vscroll, pixels_p) |
7051 | Lisp_Object window, vscroll, pixels_p; | |
5500c422 GM |
7052 | { |
7053 | struct window *w; | |
7054 | struct frame *f; | |
177c0ea7 | 7055 | |
5500c422 GM |
7056 | if (NILP (window)) |
7057 | window = selected_window; | |
47004952 | 7058 | else |
b7826503 PJ |
7059 | CHECK_WINDOW (window); |
7060 | CHECK_NUMBER_OR_FLOAT (vscroll); | |
177c0ea7 | 7061 | |
5500c422 GM |
7062 | w = XWINDOW (window); |
7063 | f = XFRAME (w->frame); | |
7064 | ||
7065 | if (FRAME_WINDOW_P (f)) | |
7066 | { | |
7067 | int old_dy = w->vscroll; | |
177c0ea7 | 7068 | |
0cc1039f KS |
7069 | w->vscroll = - (NILP (pixels_p) |
7070 | ? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll) | |
7071 | : XFLOATINT (vscroll)); | |
47004952 | 7072 | w->vscroll = min (w->vscroll, 0); |
5500c422 | 7073 | |
e56263e5 KS |
7074 | if (w->vscroll != old_dy) |
7075 | { | |
7076 | /* Adjust glyph matrix of the frame if the virtual display | |
7077 | area becomes larger than before. */ | |
7078 | if (w->vscroll < 0 && w->vscroll < old_dy) | |
7079 | adjust_glyphs (f); | |
177c0ea7 | 7080 | |
e56263e5 KS |
7081 | /* Prevent redisplay shortcuts. */ |
7082 | XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1; | |
7083 | } | |
5500c422 | 7084 | } |
177c0ea7 | 7085 | |
0cc1039f | 7086 | return Fwindow_vscroll (window, pixels_p); |
5500c422 | 7087 | } |
177c0ea7 | 7088 | |
7bbb5782 GM |
7089 | \f |
7090 | /* Call FN for all leaf windows on frame F. FN is called with the | |
7091 | first argument being a pointer to the leaf window, and with | |
f95464e4 | 7092 | additional argument USER_DATA. Stops when FN returns 0. */ |
7bbb5782 GM |
7093 | |
7094 | void | |
f95464e4 | 7095 | foreach_window (f, fn, user_data) |
7bbb5782 | 7096 | struct frame *f; |
f95464e4 GM |
7097 | int (* fn) P_ ((struct window *, void *)); |
7098 | void *user_data; | |
7bbb5782 | 7099 | { |
76fb556f YM |
7100 | /* Fdelete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */ |
7101 | if (WINDOWP (FRAME_ROOT_WINDOW (f))) | |
7102 | foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data); | |
7bbb5782 GM |
7103 | } |
7104 | ||
7105 | ||
7106 | /* Helper function for foreach_window. Call FN for all leaf windows | |
7107 | reachable from W. FN is called with the first argument being a | |
f95464e4 | 7108 | pointer to the leaf window, and with additional argument USER_DATA. |
67492200 | 7109 | Stop when FN returns 0. Value is 0 if stopped by FN. */ |
7bbb5782 | 7110 | |
67492200 | 7111 | static int |
f95464e4 | 7112 | foreach_window_1 (w, fn, user_data) |
7bbb5782 | 7113 | struct window *w; |
f95464e4 GM |
7114 | int (* fn) P_ ((struct window *, void *)); |
7115 | void *user_data; | |
7bbb5782 | 7116 | { |
67492200 | 7117 | int cont; |
177c0ea7 | 7118 | |
67492200 | 7119 | for (cont = 1; w && cont;) |
7bbb5782 GM |
7120 | { |
7121 | if (!NILP (w->hchild)) | |
f95464e4 | 7122 | cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data); |
7bbb5782 | 7123 | else if (!NILP (w->vchild)) |
f95464e4 | 7124 | cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data); |
177c0ea7 | 7125 | else |
0f532a9a | 7126 | cont = fn (w, user_data); |
177c0ea7 | 7127 | |
7bbb5782 GM |
7128 | w = NILP (w->next) ? 0 : XWINDOW (w->next); |
7129 | } | |
67492200 GM |
7130 | |
7131 | return cont; | |
7bbb5782 GM |
7132 | } |
7133 | ||
7134 | ||
6d194a45 | 7135 | /* Freeze or unfreeze the window start of W unless it is a |
f95464e4 | 7136 | mini-window or the selected window. FREEZE_P non-null means freeze |
7bbb5782 GM |
7137 | the window start. */ |
7138 | ||
67492200 | 7139 | static int |
7bbb5782 GM |
7140 | freeze_window_start (w, freeze_p) |
7141 | struct window *w; | |
f95464e4 | 7142 | void *freeze_p; |
7bbb5782 | 7143 | { |
08c1d235 SM |
7144 | if (MINI_WINDOW_P (w) |
7145 | || (WINDOWP (selected_window) /* Can be nil in corner cases. */ | |
7146 | && (w == XWINDOW (selected_window) | |
7147 | || (MINI_WINDOW_P (XWINDOW (selected_window)) | |
7148 | && ! NILP (Vminibuf_scroll_window) | |
7149 | && w == XWINDOW (Vminibuf_scroll_window))))) | |
f95464e4 | 7150 | freeze_p = NULL; |
177c0ea7 | 7151 | |
f95464e4 | 7152 | w->frozen_window_start_p = freeze_p != NULL; |
67492200 | 7153 | return 1; |
7bbb5782 GM |
7154 | } |
7155 | ||
7156 | ||
7157 | /* Freeze or unfreeze the window starts of all leaf windows on frame | |
7158 | F, except the selected window and a mini-window. FREEZE_P non-zero | |
7159 | means freeze the window start. */ | |
7160 | ||
7161 | void | |
7162 | freeze_window_starts (f, freeze_p) | |
7163 | struct frame *f; | |
7164 | int freeze_p; | |
7165 | { | |
cbccabec | 7166 | foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0)); |
7bbb5782 | 7167 | } |
5500c422 GM |
7168 | |
7169 | \f | |
7170 | /*********************************************************************** | |
7171 | Initialization | |
7172 | ***********************************************************************/ | |
7173 | ||
cbff28e8 RS |
7174 | /* Return 1 if window configurations C1 and C2 |
7175 | describe the same state of affairs. This is used by Fequal. */ | |
7176 | ||
7177 | int | |
2f8274be | 7178 | compare_window_configurations (c1, c2, ignore_positions) |
cbff28e8 | 7179 | Lisp_Object c1, c2; |
2f8274be | 7180 | int ignore_positions; |
cbff28e8 RS |
7181 | { |
7182 | register struct save_window_data *d1, *d2; | |
7183 | struct Lisp_Vector *sw1, *sw2; | |
7184 | int i; | |
7185 | ||
663fbbba KS |
7186 | CHECK_WINDOW_CONFIGURATION (c1); |
7187 | CHECK_WINDOW_CONFIGURATION (c2); | |
177c0ea7 | 7188 | |
cbff28e8 RS |
7189 | d1 = (struct save_window_data *) XVECTOR (c1); |
7190 | d2 = (struct save_window_data *) XVECTOR (c2); | |
7191 | sw1 = XVECTOR (d1->saved_windows); | |
7192 | sw2 = XVECTOR (d2->saved_windows); | |
7193 | ||
b05b4e27 | 7194 | if (d1->frame_cols != d2->frame_cols) |
cbff28e8 | 7195 | return 0; |
b05b4e27 | 7196 | if (d1->frame_lines != d2->frame_lines) |
cbff28e8 | 7197 | return 0; |
b05b4e27 | 7198 | if (d1->frame_menu_bar_lines != d2->frame_menu_bar_lines) |
cbff28e8 RS |
7199 | return 0; |
7200 | if (! EQ (d1->selected_frame, d2->selected_frame)) | |
7201 | return 0; | |
7202 | /* Don't compare the current_window field directly. | |
7203 | Instead see w1_is_current and w2_is_current, below. */ | |
7204 | if (! EQ (d1->current_buffer, d2->current_buffer)) | |
7205 | return 0; | |
2f8274be | 7206 | if (! ignore_positions) |
3f49fddc KS |
7207 | { |
7208 | if (! EQ (d1->minibuf_scroll_window, d2->minibuf_scroll_window)) | |
7209 | return 0; | |
7210 | if (! EQ (d1->minibuf_selected_window, d2->minibuf_selected_window)) | |
7211 | return 0; | |
7212 | } | |
cbff28e8 RS |
7213 | /* Don't compare the root_window field. |
7214 | We don't require the two configurations | |
7215 | to use the same window object, | |
7216 | and the two root windows must be equivalent | |
7217 | if everything else compares equal. */ | |
7218 | if (! EQ (d1->focus_frame, d2->focus_frame)) | |
7219 | return 0; | |
b05b4e27 | 7220 | if (d1->min_width != d2->min_width) |
cbff28e8 | 7221 | return 0; |
b05b4e27 | 7222 | if (d1->min_height != d2->min_height) |
cbff28e8 RS |
7223 | return 0; |
7224 | ||
7225 | /* Verify that the two confis have the same number of windows. */ | |
7226 | if (sw1->size != sw2->size) | |
7227 | return 0; | |
7228 | ||
7229 | for (i = 0; i < sw1->size; i++) | |
7230 | { | |
7231 | struct saved_window *p1, *p2; | |
7232 | int w1_is_current, w2_is_current; | |
7233 | ||
7234 | p1 = SAVED_WINDOW_N (sw1, i); | |
7235 | p2 = SAVED_WINDOW_N (sw2, i); | |
7236 | ||
7237 | /* Verify that the current windows in the two | |
7238 | configurations correspond to each other. */ | |
7239 | w1_is_current = EQ (d1->current_window, p1->window); | |
7240 | w2_is_current = EQ (d2->current_window, p2->window); | |
7241 | ||
7242 | if (w1_is_current != w2_is_current) | |
7243 | return 0; | |
7244 | ||
7245 | /* Verify that the corresponding windows do match. */ | |
7246 | if (! EQ (p1->buffer, p2->buffer)) | |
7247 | return 0; | |
949cf20f | 7248 | if (! EQ (p1->left_col, p2->left_col)) |
cbff28e8 | 7249 | return 0; |
949cf20f | 7250 | if (! EQ (p1->top_line, p2->top_line)) |
cbff28e8 | 7251 | return 0; |
949cf20f | 7252 | if (! EQ (p1->total_cols, p2->total_cols)) |
cbff28e8 | 7253 | return 0; |
949cf20f | 7254 | if (! EQ (p1->total_lines, p2->total_lines)) |
cbff28e8 | 7255 | return 0; |
cbff28e8 RS |
7256 | if (! EQ (p1->display_table, p2->display_table)) |
7257 | return 0; | |
7258 | if (! EQ (p1->parent, p2->parent)) | |
7259 | return 0; | |
7260 | if (! EQ (p1->prev, p2->prev)) | |
7261 | return 0; | |
2f8274be RS |
7262 | if (! ignore_positions) |
7263 | { | |
7264 | if (! EQ (p1->hscroll, p2->hscroll)) | |
7265 | return 0; | |
ea68264b GM |
7266 | if (!EQ (p1->min_hscroll, p2->min_hscroll)) |
7267 | return 0; | |
2f8274be RS |
7268 | if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg)) |
7269 | return 0; | |
7270 | if (NILP (Fequal (p1->start, p2->start))) | |
7271 | return 0; | |
7272 | if (NILP (Fequal (p1->pointm, p2->pointm))) | |
7273 | return 0; | |
7274 | if (NILP (Fequal (p1->mark, p2->mark))) | |
7275 | return 0; | |
7276 | } | |
949cf20f KS |
7277 | if (! EQ (p1->left_margin_cols, p2->left_margin_cols)) |
7278 | return 0; | |
7279 | if (! EQ (p1->right_margin_cols, p2->right_margin_cols)) | |
7280 | return 0; | |
7281 | if (! EQ (p1->left_fringe_width, p2->left_fringe_width)) | |
7282 | return 0; | |
7283 | if (! EQ (p1->right_fringe_width, p2->right_fringe_width)) | |
7284 | return 0; | |
7285 | if (! EQ (p1->fringes_outside_margins, p2->fringes_outside_margins)) | |
7286 | return 0; | |
7287 | if (! EQ (p1->scroll_bar_width, p2->scroll_bar_width)) | |
7288 | return 0; | |
7289 | if (! EQ (p1->vertical_scroll_bar_type, p2->vertical_scroll_bar_type)) | |
7290 | return 0; | |
cbff28e8 RS |
7291 | } |
7292 | ||
7293 | return 1; | |
7294 | } | |
2f8274be RS |
7295 | |
7296 | DEFUN ("compare-window-configurations", Fcompare_window_configurations, | |
7297 | Scompare_window_configurations, 2, 2, 0, | |
fdb82f93 PJ |
7298 | doc: /* Compare two window configurations as regards the structure of windows. |
7299 | This function ignores details such as the values of point and mark | |
7300 | and scrolling positions. */) | |
7301 | (x, y) | |
2f8274be RS |
7302 | Lisp_Object x, y; |
7303 | { | |
7304 | if (compare_window_configurations (x, y, 1)) | |
7305 | return Qt; | |
7306 | return Qnil; | |
7307 | } | |
cbff28e8 | 7308 | \f |
dfcf069d | 7309 | void |
7ab12479 JB |
7310 | init_window_once () |
7311 | { | |
3224dac1 | 7312 | struct frame *f = make_initial_frame (); |
1ae1a37d | 7313 | XSETFRAME (selected_frame, f); |
daf01701 | 7314 | Vterminal_frame = selected_frame; |
1ae1a37d GM |
7315 | minibuf_window = f->minibuffer_window; |
7316 | selected_window = f->selected_window; | |
7317 | last_nonminibuf_frame = f; | |
5b03d3c0 RS |
7318 | |
7319 | window_initialized = 1; | |
7ab12479 JB |
7320 | } |
7321 | ||
67492200 GM |
7322 | void |
7323 | init_window () | |
7324 | { | |
7325 | Vwindow_list = Qnil; | |
7326 | } | |
7327 | ||
dfcf069d | 7328 | void |
7ab12479 JB |
7329 | syms_of_window () |
7330 | { | |
c525d842 CY |
7331 | Qscroll_up = intern ("scroll-up"); |
7332 | staticpro (&Qscroll_up); | |
7333 | ||
7334 | Qscroll_down = intern ("scroll-down"); | |
7335 | staticpro (&Qscroll_down); | |
7336 | ||
8a37516b GM |
7337 | Qwindow_size_fixed = intern ("window-size-fixed"); |
7338 | staticpro (&Qwindow_size_fixed); | |
c0e7ccd3 | 7339 | Fset (Qwindow_size_fixed, Qnil); |
177c0ea7 | 7340 | |
543f5fb1 RS |
7341 | staticpro (&Qwindow_configuration_change_hook); |
7342 | Qwindow_configuration_change_hook | |
7343 | = intern ("window-configuration-change-hook"); | |
7344 | ||
7ab12479 JB |
7345 | Qwindowp = intern ("windowp"); |
7346 | staticpro (&Qwindowp); | |
7347 | ||
3f8ab7bd RS |
7348 | Qwindow_configuration_p = intern ("window-configuration-p"); |
7349 | staticpro (&Qwindow_configuration_p); | |
7350 | ||
806b4d9b JB |
7351 | Qwindow_live_p = intern ("window-live-p"); |
7352 | staticpro (&Qwindow_live_p); | |
605be8af | 7353 | |
2cccc823 | 7354 | Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook"); |
a58ec57d RS |
7355 | staticpro (&Qtemp_buffer_show_hook); |
7356 | ||
67492200 | 7357 | staticpro (&Vwindow_list); |
8bfb170b KS |
7358 | |
7359 | minibuf_selected_window = Qnil; | |
3dbab091 | 7360 | staticpro (&minibuf_selected_window); |
67492200 | 7361 | |
66fe93d1 | 7362 | window_scroll_pixel_based_preserve_y = -1; |
66d43aea | 7363 | |
7ab12479 | 7364 | DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function, |
fdb82f93 PJ |
7365 | doc: /* Non-nil means call as function to display a help buffer. |
7366 | The function is called with one argument, the buffer to be displayed. | |
7367 | Used by `with-output-to-temp-buffer'. | |
7368 | If this function is used, then it must do the entire job of showing | |
7369 | the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */); | |
7ab12479 JB |
7370 | Vtemp_buffer_show_function = Qnil; |
7371 | ||
7372 | DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function, | |
fdb82f93 PJ |
7373 | doc: /* If non-nil, function to call to handle `display-buffer'. |
7374 | It will receive two args, the buffer and a flag which if non-nil means | |
c2755926 LT |
7375 | that the currently selected window is not acceptable. |
7376 | It should choose or create a window, display the specified buffer in it, | |
7377 | and return the window. | |
fdb82f93 PJ |
7378 | Commands such as `switch-to-buffer-other-window' and `find-file-other-window' |
7379 | work using this function. */); | |
7ab12479 JB |
7380 | Vdisplay_buffer_function = Qnil; |
7381 | ||
6529ed87 | 7382 | DEFVAR_LISP ("even-window-heights", &Veven_window_heights, |
fdb82f93 PJ |
7383 | doc: /* *If non-nil, `display-buffer' should even the window heights. |
7384 | If nil, `display-buffer' will leave the window configuration alone. */); | |
6529ed87 GM |
7385 | Veven_window_heights = Qt; |
7386 | ||
7ab12479 | 7387 | DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window, |
fdb82f93 | 7388 | doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */); |
7ab12479 JB |
7389 | Vminibuf_scroll_window = Qnil; |
7390 | ||
cc91894c | 7391 | DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows, |
26124d5e | 7392 | doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows. |
cc91894c KS |
7393 | If the minibuffer is active, the `minibuffer-scroll-window' mode line |
7394 | is displayed in the `mode-line' face. */); | |
7395 | mode_line_in_non_selected_windows = 1; | |
26124d5e | 7396 | |
7ab12479 | 7397 | DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer, |
fdb82f93 | 7398 | doc: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */); |
7ab12479 JB |
7399 | Vother_window_scroll_buffer = Qnil; |
7400 | ||
44fa5b1e | 7401 | DEFVAR_BOOL ("pop-up-frames", &pop_up_frames, |
fdb82f93 | 7402 | doc: /* *Non-nil means `display-buffer' should make a separate frame. */); |
44fa5b1e | 7403 | pop_up_frames = 0; |
7ab12479 | 7404 | |
e56263e5 KS |
7405 | DEFVAR_BOOL ("auto-window-vscroll", &auto_window_vscroll_p, |
7406 | doc: /* *Non-nil means to automatically adjust `window-vscroll' to view tall lines. */); | |
7407 | auto_window_vscroll_p = 1; | |
7408 | ||
9c3da604 | 7409 | DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames, |
fdb82f93 PJ |
7410 | doc: /* *Non-nil means `display-buffer' should reuse frames. |
7411 | If the buffer in question is already displayed in a frame, raise that frame. */); | |
9c3da604 GM |
7412 | display_buffer_reuse_frames = 0; |
7413 | ||
44fa5b1e | 7414 | DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function, |
fdb82f93 PJ |
7415 | doc: /* Function to call to handle automatic new frame creation. |
7416 | It is called with no arguments and should return a newly created frame. | |
7417 | ||
7418 | A typical value might be `(lambda () (new-frame pop-up-frame-alist))' | |
7419 | where `pop-up-frame-alist' would hold the default frame parameters. */); | |
44fa5b1e | 7420 | Vpop_up_frame_function = Qnil; |
7ab12479 | 7421 | |
a90712c2 | 7422 | DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names, |
fdb82f93 | 7423 | doc: /* *List of buffer names that should have their own special frames. |
c019856e RS |
7424 | Displaying a buffer with `display-buffer' or `pop-to-buffer', |
7425 | if its name is in this list, makes a special frame for it | |
fdb82f93 PJ |
7426 | using `special-display-function'. See also `special-display-regexps'. |
7427 | ||
7428 | An element of the list can be a list instead of just a string. | |
7429 | There are two ways to use a list as an element: | |
7430 | (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...) | |
3cb7143c RS |
7431 | In the first case, the FRAME-PARAMETERS are pairs of the form |
7432 | \(PARAMETER . VALUE); these parameter values are used to create the frame. | |
7433 | In the second case, FUNCTION is called with BUFFER as the first argument, | |
7434 | followed by the OTHER-ARGS--it can display BUFFER in any way it likes. | |
fdb82f93 PJ |
7435 | All this is done by the function found in `special-display-function'. |
7436 | ||
499858c5 RS |
7437 | If the specified frame parameters include (same-buffer . t), the |
7438 | buffer is displayed in the currently selected window. Otherwise, if | |
7439 | they include (same-frame . t), the buffer is displayed in a new window | |
7440 | in the currently selected frame. | |
7441 | ||
fdb82f93 PJ |
7442 | If this variable appears \"not to work\", because you add a name to it |
7443 | but that buffer still appears in the selected window, look at the | |
7444 | values of `same-window-buffer-names' and `same-window-regexps'. | |
7445 | Those variables take precedence over this one. */); | |
a90712c2 RS |
7446 | Vspecial_display_buffer_names = Qnil; |
7447 | ||
7448 | DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps, | |
fdb82f93 | 7449 | doc: /* *List of regexps saying which buffers should have their own special frames. |
c019856e RS |
7450 | When displaying a buffer with `display-buffer' or `pop-to-buffer', |
7451 | if any regexp in this list matches the buffer name, it makes a | |
7452 | special frame for the buffer by calling `special-display-function'. | |
fdb82f93 PJ |
7453 | |
7454 | An element of the list can be a list instead of just a string. | |
7455 | There are two ways to use a list as an element: | |
7456 | (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...) | |
3cb7143c RS |
7457 | In the first case, the FRAME-PARAMETERS are pairs of the form |
7458 | \(PARAMETER . VALUE); these parameter values are used to create the frame. | |
7459 | In the second case, FUNCTION is called with BUFFER as the first argument, | |
7460 | followed by the OTHER-ARGS--it can display the buffer in any way it likes. | |
fdb82f93 PJ |
7461 | All this is done by the function found in `special-display-function'. |
7462 | ||
499858c5 RS |
7463 | If the specified frame parameters include (same-buffer . t), the |
7464 | buffer is displayed in the currently selected window. Otherwise, if | |
7465 | they include (same-frame . t), the buffer is displayed in a new window | |
7466 | in the currently selected frame. | |
7467 | ||
fdb82f93 PJ |
7468 | If this variable appears \"not to work\", because you add a regexp to it |
7469 | but the matching buffers still appear in the selected window, look at the | |
7470 | values of `same-window-buffer-names' and `same-window-regexps'. | |
7471 | Those variables take precedence over this one. */); | |
a90712c2 RS |
7472 | Vspecial_display_regexps = Qnil; |
7473 | ||
7474 | DEFVAR_LISP ("special-display-function", &Vspecial_display_function, | |
fdb82f93 PJ |
7475 | doc: /* Function to call to make a new frame for a special buffer. |
7476 | It is called with two arguments, the buffer and optional buffer specific | |
7477 | data, and should return a window displaying that buffer. | |
a5731348 SM |
7478 | The default value normally makes a separate frame for the buffer, |
7479 | using `special-display-frame-alist' to specify the frame parameters. | |
7480 | But if the buffer specific data includes (same-buffer . t) then the | |
7481 | buffer is displayed in the current selected window. | |
7482 | Otherwise if it includes (same-frame . t) then the buffer is displayed in | |
7483 | a new window in the currently selected frame. | |
7484 | ||
7485 | A buffer is special if it is listed in `special-display-buffer-names' | |
fdb82f93 | 7486 | or matches a regexp in `special-display-regexps'. */); |
a90712c2 RS |
7487 | Vspecial_display_function = Qnil; |
7488 | ||
855d8627 | 7489 | DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names, |
fdb82f93 PJ |
7490 | doc: /* *List of buffer names that should appear in the selected window. |
7491 | Displaying one of these buffers using `display-buffer' or `pop-to-buffer' | |
7492 | switches to it in the selected window, rather than making it appear | |
7493 | in some other window. | |
7494 | ||
7495 | An element of the list can be a cons cell instead of just a string. | |
7496 | Then the car must be a string, which specifies the buffer name. | |
7497 | This is for compatibility with `special-display-buffer-names'; | |
7498 | the cdr of the cons cell is ignored. | |
7499 | ||
7500 | See also `same-window-regexps'. */); | |
855d8627 RS |
7501 | Vsame_window_buffer_names = Qnil; |
7502 | ||
7503 | DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps, | |
fdb82f93 PJ |
7504 | doc: /* *List of regexps saying which buffers should appear in the selected window. |
7505 | If a buffer name matches one of these regexps, then displaying it | |
7506 | using `display-buffer' or `pop-to-buffer' switches to it | |
7507 | in the selected window, rather than making it appear in some other window. | |
7508 | ||
7509 | An element of the list can be a cons cell instead of just a string. | |
7510 | Then the car must be a string, which specifies the buffer name. | |
7511 | This is for compatibility with `special-display-buffer-names'; | |
7512 | the cdr of the cons cell is ignored. | |
7513 | ||
7514 | See also `same-window-buffer-names'. */); | |
855d8627 RS |
7515 | Vsame_window_regexps = Qnil; |
7516 | ||
7ab12479 | 7517 | DEFVAR_BOOL ("pop-up-windows", &pop_up_windows, |
fdb82f93 | 7518 | doc: /* *Non-nil means display-buffer should make new windows. */); |
7ab12479 JB |
7519 | pop_up_windows = 1; |
7520 | ||
7521 | DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines, | |
fdb82f93 | 7522 | doc: /* *Number of lines of continuity when scrolling by screenfuls. */); |
7ab12479 JB |
7523 | next_screen_context_lines = 2; |
7524 | ||
7525 | DEFVAR_INT ("split-height-threshold", &split_height_threshold, | |
bdbae5b8 EZ |
7526 | doc: /* *A window must be at least this tall to be eligible for splitting |
7527 | by `display-buffer'. The value is in line units. | |
fdb82f93 | 7528 | If there is only one window, it is split regardless of this value. */); |
7ab12479 JB |
7529 | split_height_threshold = 500; |
7530 | ||
90ab5c62 SM |
7531 | DEFVAR_LISP ("split-window-preferred-function", |
7532 | &Vsplit_window_preferred_function, | |
7533 | doc: /* Function to use to split a window. | |
7534 | This is used by `display-buffer' to allow the user to choose whether | |
7535 | to split windows horizontally or vertically or some mix of the two. | |
7536 | It is called with a window as single argument and should split it in two | |
7537 | and return the new window. */); | |
7538 | Vsplit_window_preferred_function = intern ("split-window"); | |
7539 | ||
7ab12479 | 7540 | DEFVAR_INT ("window-min-height", &window_min_height, |
bdbae5b8 EZ |
7541 | doc: /* *Delete any window less than this tall (including its mode line). |
7542 | The value is in line units. */); | |
7ab12479 JB |
7543 | window_min_height = 4; |
7544 | ||
7545 | DEFVAR_INT ("window-min-width", &window_min_width, | |
bdbae5b8 | 7546 | doc: /* *Delete any window less than this wide (measured in characters). */); |
7ab12479 JB |
7547 | window_min_width = 10; |
7548 | ||
5500c422 GM |
7549 | DEFVAR_LISP ("scroll-preserve-screen-position", |
7550 | &Vscroll_preserve_screen_position, | |
bdf4ec93 RS |
7551 | doc: /* *Controls if scroll commands move point to keep its screen line unchanged. |
7552 | A value of nil means point does not keep its screen position except | |
7553 | at the scroll margin or window boundary respectively. | |
7554 | A value of t means point keeps its screen position if the scroll | |
7555 | command moved it vertically out of the window, e.g. when scrolling | |
7556 | by full screens. | |
7557 | Any other value means point always keeps its screen position. */); | |
5500c422 | 7558 | Vscroll_preserve_screen_position = Qnil; |
9317a85d | 7559 | |
543f5fb1 RS |
7560 | DEFVAR_LISP ("window-configuration-change-hook", |
7561 | &Vwindow_configuration_change_hook, | |
fdb82f93 PJ |
7562 | doc: /* Functions to call when window configuration changes. |
7563 | The selected frame is the one whose configuration has changed. */); | |
543f5fb1 RS |
7564 | Vwindow_configuration_change_hook = Qnil; |
7565 | ||
7ab12479 JB |
7566 | defsubr (&Sselected_window); |
7567 | defsubr (&Sminibuffer_window); | |
7568 | defsubr (&Swindow_minibuffer_p); | |
7569 | defsubr (&Swindowp); | |
806b4d9b | 7570 | defsubr (&Swindow_live_p); |
7ab12479 | 7571 | defsubr (&Spos_visible_in_window_p); |
536833ab | 7572 | defsubr (&Swindow_line_height); |
7ab12479 JB |
7573 | defsubr (&Swindow_buffer); |
7574 | defsubr (&Swindow_height); | |
7575 | defsubr (&Swindow_width); | |
35ea56c9 | 7576 | defsubr (&Swindow_full_width_p); |
7ab12479 JB |
7577 | defsubr (&Swindow_hscroll); |
7578 | defsubr (&Sset_window_hscroll); | |
190eb263 RS |
7579 | defsubr (&Swindow_redisplay_end_trigger); |
7580 | defsubr (&Sset_window_redisplay_end_trigger); | |
7ab12479 | 7581 | defsubr (&Swindow_edges); |
c99a9eb3 RS |
7582 | defsubr (&Swindow_pixel_edges); |
7583 | defsubr (&Swindow_inside_edges); | |
7584 | defsubr (&Swindow_inside_pixel_edges); | |
d5783c40 JB |
7585 | defsubr (&Scoordinates_in_window_p); |
7586 | defsubr (&Swindow_at); | |
7ab12479 JB |
7587 | defsubr (&Swindow_point); |
7588 | defsubr (&Swindow_start); | |
7589 | defsubr (&Swindow_end); | |
7590 | defsubr (&Sset_window_point); | |
7591 | defsubr (&Sset_window_start); | |
7592 | defsubr (&Swindow_dedicated_p); | |
d207b766 | 7593 | defsubr (&Sset_window_dedicated_p); |
7ab12479 JB |
7594 | defsubr (&Swindow_display_table); |
7595 | defsubr (&Sset_window_display_table); | |
7596 | defsubr (&Snext_window); | |
7597 | defsubr (&Sprevious_window); | |
7598 | defsubr (&Sother_window); | |
7599 | defsubr (&Sget_lru_window); | |
7600 | defsubr (&Sget_largest_window); | |
7601 | defsubr (&Sget_buffer_window); | |
7602 | defsubr (&Sdelete_other_windows); | |
7603 | defsubr (&Sdelete_windows_on); | |
7604 | defsubr (&Sreplace_buffer_in_windows); | |
7605 | defsubr (&Sdelete_window); | |
7606 | defsubr (&Sset_window_buffer); | |
7607 | defsubr (&Sselect_window); | |
4628f7a4 EN |
7608 | defsubr (&Sspecial_display_p); |
7609 | defsubr (&Ssame_window_p); | |
7ab12479 | 7610 | defsubr (&Sdisplay_buffer); |
e661376d | 7611 | defsubr (&Sforce_window_update); |
7ab12479 JB |
7612 | defsubr (&Ssplit_window); |
7613 | defsubr (&Senlarge_window); | |
7614 | defsubr (&Sshrink_window); | |
0d384044 | 7615 | defsubr (&Sadjust_window_trailing_edge); |
7ab12479 JB |
7616 | defsubr (&Sscroll_up); |
7617 | defsubr (&Sscroll_down); | |
7618 | defsubr (&Sscroll_left); | |
7619 | defsubr (&Sscroll_right); | |
ccd0664b | 7620 | defsubr (&Sother_window_for_scrolling); |
7ab12479 | 7621 | defsubr (&Sscroll_other_window); |
fa832261 | 7622 | defsubr (&Sminibuffer_selected_window); |
7ab12479 | 7623 | defsubr (&Srecenter); |
81fe0836 | 7624 | defsubr (&Swindow_text_height); |
7ab12479 JB |
7625 | defsubr (&Smove_to_window_line); |
7626 | defsubr (&Swindow_configuration_p); | |
3f8ab7bd | 7627 | defsubr (&Swindow_configuration_frame); |
7ab12479 JB |
7628 | defsubr (&Sset_window_configuration); |
7629 | defsubr (&Scurrent_window_configuration); | |
7630 | defsubr (&Ssave_window_excursion); | |
c16e1cc3 | 7631 | defsubr (&Swindow_tree); |
5500c422 GM |
7632 | defsubr (&Sset_window_margins); |
7633 | defsubr (&Swindow_margins); | |
949cf20f KS |
7634 | defsubr (&Sset_window_fringes); |
7635 | defsubr (&Swindow_fringes); | |
7636 | defsubr (&Sset_window_scroll_bars); | |
7637 | defsubr (&Swindow_scroll_bars); | |
5500c422 GM |
7638 | defsubr (&Swindow_vscroll); |
7639 | defsubr (&Sset_window_vscroll); | |
2f8274be | 7640 | defsubr (&Scompare_window_configurations); |
67492200 | 7641 | defsubr (&Swindow_list); |
7ab12479 JB |
7642 | } |
7643 | ||
dfcf069d | 7644 | void |
7ab12479 JB |
7645 | keys_of_window () |
7646 | { | |
7647 | initial_define_key (control_x_map, '1', "delete-other-windows"); | |
7648 | initial_define_key (control_x_map, '2', "split-window"); | |
7649 | initial_define_key (control_x_map, '0', "delete-window"); | |
7650 | initial_define_key (control_x_map, 'o', "other-window"); | |
7651 | initial_define_key (control_x_map, '^', "enlarge-window"); | |
7652 | initial_define_key (control_x_map, '<', "scroll-left"); | |
7653 | initial_define_key (control_x_map, '>', "scroll-right"); | |
7654 | ||
7655 | initial_define_key (global_map, Ctl ('V'), "scroll-up"); | |
7656 | initial_define_key (meta_map, Ctl ('V'), "scroll-other-window"); | |
7657 | initial_define_key (meta_map, 'v', "scroll-down"); | |
7658 | ||
7659 | initial_define_key (global_map, Ctl('L'), "recenter"); | |
7660 | initial_define_key (meta_map, 'r', "move-to-window-line"); | |
7661 | } | |
ab5796a9 MB |
7662 | |
7663 | /* arch-tag: 90a9c576-0590-48f1-a5f1-6c96a0452d9f | |
7664 | (do not change this comment) */ |