1 /* Window creation, deletion and examination for GNU Emacs.
2 Does not include redisplay.
3 Copyright (C) 1985,86,87,93,94,95,96,97,1998,2000, 2001, 2002, 2003
4 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
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
10 the Free Software Foundation; either version 2, or (at your option)
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.
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
20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
36 #include "dispextern.h"
37 #include "blockinput.h"
38 #include "intervals.h"
42 #endif /* HAVE_X_WINDOWS */
54 Lisp_Object Qwindowp
, Qwindow_live_p
, Qwindow_configuration_p
;
55 Lisp_Object Qwindow_size_fixed
;
56 extern Lisp_Object Qleft_margin
, Qright_margin
;
58 static int displayed_window_lines
P_ ((struct window
*));
59 static struct window
*decode_window
P_ ((Lisp_Object
));
60 static int count_windows
P_ ((struct window
*));
61 static int get_leaf_windows
P_ ((struct window
*, struct window
**, int));
62 static void window_scroll
P_ ((Lisp_Object
, int, int, int));
63 static void window_scroll_pixel_based
P_ ((Lisp_Object
, int, int, int));
64 static void window_scroll_line_based
P_ ((Lisp_Object
, int, int, int));
65 static int window_min_size_1
P_ ((struct window
*, int));
66 static int window_min_size
P_ ((struct window
*, int, int, int *));
67 static void size_window
P_ ((Lisp_Object
, int, int, int));
68 static int freeze_window_start
P_ ((struct window
*, void *));
69 static int window_fixed_size_p
P_ ((struct window
*, int, int));
70 static void enlarge_window
P_ ((Lisp_Object
, int, int, int));
71 static Lisp_Object window_list
P_ ((void));
72 static int add_window_to_list
P_ ((struct window
*, void *));
73 static int candidate_window_p
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
,
75 static Lisp_Object next_window
P_ ((Lisp_Object
, Lisp_Object
,
77 static void decode_next_window_args
P_ ((Lisp_Object
*, Lisp_Object
*,
79 static int foreach_window_1
P_ ((struct window
*,
80 int (* fn
) (struct window
*, void *),
82 static Lisp_Object window_list_1
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
));
84 /* The value of `window-size-fixed'. */
86 int window_size_fixed
;
88 /* This is the window in which the terminal's cursor should
89 be left when nothing is being done with it. This must
90 always be a leaf window, and its buffer is selected by
91 the top level editing loop at the end of each command.
93 This value is always the same as
94 FRAME_SELECTED_WINDOW (selected_frame). */
96 Lisp_Object selected_window
;
98 /* A list of all windows for use by next_window and Fwindow_list.
99 Functions creating or deleting windows should invalidate this cache
100 by setting it to nil. */
102 Lisp_Object Vwindow_list
;
104 /* The mini-buffer window of the selected frame.
105 Note that you cannot test for mini-bufferness of an arbitrary window
106 by comparing against this; but you can test for mini-bufferness of
107 the selected window. */
109 Lisp_Object minibuf_window
;
111 /* Non-nil means it is the window whose mode line should be
112 shown as the selected window when the minibuffer is selected. */
114 Lisp_Object minibuf_selected_window
;
116 /* Non-nil means it is the window for C-M-v to scroll
117 when the mini-buffer is selected. */
119 Lisp_Object Vminibuf_scroll_window
;
121 /* Non-nil means this is the buffer whose window C-M-v should scroll. */
123 Lisp_Object Vother_window_scroll_buffer
;
125 /* Non-nil means it's function to call to display temp buffers. */
127 Lisp_Object Vtemp_buffer_show_function
;
129 /* Non-zero means to use mode-line-inactive face in all windows but the
130 selected-window and the minibuffer-scroll-window when the
131 minibuffer is active. */
132 int mode_line_in_non_selected_windows
;
134 /* If a window gets smaller than either of these, it is removed. */
136 EMACS_INT window_min_height
;
137 EMACS_INT window_min_width
;
139 /* Nonzero implies Fdisplay_buffer should create windows. */
143 /* Nonzero implies make new frames for Fdisplay_buffer. */
147 /* Nonzero means reuse existing frames for displaying buffers. */
149 int display_buffer_reuse_frames
;
151 /* Non-nil means use this function instead of default */
153 Lisp_Object Vpop_up_frame_function
;
155 /* Function to call to handle Fdisplay_buffer. */
157 Lisp_Object Vdisplay_buffer_function
;
159 /* Non-nil means that Fdisplay_buffer should even the heights of windows. */
161 Lisp_Object Veven_window_heights
;
163 /* List of buffer *names* for buffers that should have their own frames. */
165 Lisp_Object Vspecial_display_buffer_names
;
167 /* List of regexps for buffer names that should have their own frames. */
169 Lisp_Object Vspecial_display_regexps
;
171 /* Function to pop up a special frame. */
173 Lisp_Object Vspecial_display_function
;
175 /* List of buffer *names* for buffers to appear in selected window. */
177 Lisp_Object Vsame_window_buffer_names
;
179 /* List of regexps for buffer names to appear in selected window. */
181 Lisp_Object Vsame_window_regexps
;
183 /* Hook run at end of temp_output_buffer_show. */
185 Lisp_Object Qtemp_buffer_show_hook
;
187 /* Fdisplay_buffer always splits the largest window
188 if that window is more than this high. */
190 EMACS_INT split_height_threshold
;
192 /* Number of lines of continuity in scrolling by screenfuls. */
194 EMACS_INT next_screen_context_lines
;
196 /* Incremented for each window created. */
198 static int sequence_number
;
200 /* Nonzero after init_window_once has finished. */
202 static int window_initialized
;
204 /* Hook to run when window config changes. */
206 Lisp_Object Qwindow_configuration_change_hook
;
207 Lisp_Object Vwindow_configuration_change_hook
;
209 /* Nonzero means scroll commands try to put point
210 at the same screen height as previously. */
212 Lisp_Object Vscroll_preserve_screen_position
;
214 #if 0 /* This isn't used anywhere. */
215 /* Nonzero means we can split a frame even if it is "unsplittable". */
216 static int inhibit_frame_unsplittable
;
219 extern EMACS_INT scroll_margin
;
221 extern Lisp_Object Qwindow_scroll_functions
, Vwindow_scroll_functions
;
223 DEFUN ("windowp", Fwindowp
, Swindowp
, 1, 1, 0,
224 doc
: /* Returns t if OBJECT is a window. */)
228 return WINDOWP (object
) ? Qt
: Qnil
;
231 DEFUN ("window-live-p", Fwindow_live_p
, Swindow_live_p
, 1, 1, 0,
232 doc
: /* Returns t if OBJECT is a window which is currently visible. */)
236 return WINDOW_LIVE_P (object
) ? Qt
: Qnil
;
243 register struct window
*p
;
245 p
= allocate_window ();
246 XSETFASTINT (p
->sequence_number
, ++sequence_number
);
247 XSETFASTINT (p
->left_col
, 0);
248 XSETFASTINT (p
->top_line
, 0);
249 XSETFASTINT (p
->total_lines
, 0);
250 XSETFASTINT (p
->total_cols
, 0);
251 XSETFASTINT (p
->hscroll
, 0);
252 XSETFASTINT (p
->min_hscroll
, 0);
253 p
->orig_top_line
= p
->orig_total_lines
= Qnil
;
254 p
->start
= Fmake_marker ();
255 p
->pointm
= Fmake_marker ();
256 XSETFASTINT (p
->use_time
, 0);
258 p
->display_table
= Qnil
;
260 p
->pseudo_window_p
= 0;
261 bzero (&p
->cursor
, sizeof (p
->cursor
));
262 bzero (&p
->last_cursor
, sizeof (p
->last_cursor
));
263 bzero (&p
->phys_cursor
, sizeof (p
->phys_cursor
));
264 p
->desired_matrix
= p
->current_matrix
= 0;
265 p
->phys_cursor_type
= -1;
266 p
->phys_cursor_width
= -1;
267 p
->must_be_updated_p
= 0;
268 XSETFASTINT (p
->window_end_vpos
, 0);
269 XSETFASTINT (p
->window_end_pos
, 0);
270 p
->window_end_valid
= Qnil
;
273 XSETFASTINT (p
->last_point
, 0);
274 p
->frozen_window_start_p
= 0;
275 p
->height_fixed_p
= 0;
276 p
->last_cursor_off_p
= p
->cursor_off_p
= 0;
277 p
->left_margin_cols
= Qnil
;
278 p
->right_margin_cols
= Qnil
;
279 p
->left_fringe_width
= Qnil
;
280 p
->right_fringe_width
= Qnil
;
281 p
->fringes_outside_margins
= Qnil
;
282 p
->scroll_bar_width
= Qnil
;
283 p
->vertical_scroll_bar_type
= Qt
;
289 DEFUN ("selected-window", Fselected_window
, Sselected_window
, 0, 0, 0,
290 doc
: /* Return the window that the cursor now appears in and commands apply to. */)
293 return selected_window
;
296 DEFUN ("minibuffer-window", Fminibuffer_window
, Sminibuffer_window
, 0, 1, 0,
297 doc
: /* Return the window used now for minibuffers.
298 If the optional argument FRAME is specified, return the minibuffer window
299 used by that frame. */)
304 frame
= selected_frame
;
305 CHECK_LIVE_FRAME (frame
);
306 return FRAME_MINIBUF_WINDOW (XFRAME (frame
));
309 DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p
, Swindow_minibuffer_p
, 0, 1, 0,
310 doc
: /* Returns non-nil if WINDOW is a minibuffer window.
311 WINDOW defaults to the selected window. */)
315 struct window
*w
= decode_window (window
);
316 return MINI_WINDOW_P (w
) ? Qt
: Qnil
;
320 DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p
,
321 Spos_visible_in_window_p
, 0, 3, 0,
322 doc
: /* Return t if position POS is currently on the frame in WINDOW.
323 Return nil if that position is scrolled vertically out of view.
324 If a character is only partially visible, nil is returned, unless the
325 optional argument PARTIALLY is non-nil.
326 POS defaults to point in WINDOW; WINDOW defaults to the selected window. */)
327 (pos
, window
, partially
)
328 Lisp_Object pos
, window
, partially
;
330 register struct window
*w
;
332 register struct buffer
*buf
;
334 Lisp_Object in_window
;
337 w
= decode_window (window
);
338 buf
= XBUFFER (w
->buffer
);
339 SET_TEXT_POS_FROM_MARKER (top
, w
->start
);
343 CHECK_NUMBER_COERCE_MARKER (pos
);
346 else if (w
== XWINDOW (selected_window
))
349 posint
= XMARKER (w
->pointm
)->charpos
;
351 /* If position is above window start, it's not visible. */
352 if (posint
< CHARPOS (top
))
354 else if (XFASTINT (w
->last_modified
) >= BUF_MODIFF (buf
)
355 && XFASTINT (w
->last_overlay_modified
) >= BUF_OVERLAY_MODIFF (buf
)
356 && posint
< BUF_Z (buf
) - XFASTINT (w
->window_end_pos
))
358 /* If frame is up-to-date, and POSINT is < window end pos, use
359 that info. This doesn't work for POSINT == end pos, because
360 the window end pos is actually the position _after_ the last
361 char in the window. */
362 if (NILP (partially
))
364 pos_visible_p (w
, posint
, &fully_p
, NILP (partially
));
365 in_window
= fully_p
? Qt
: Qnil
;
370 else if (posint
> BUF_ZV (buf
))
372 else if (CHARPOS (top
) < BUF_BEGV (buf
) || CHARPOS (top
) > BUF_ZV (buf
))
373 /* If window start is out of range, do something reasonable. */
377 if (pos_visible_p (w
, posint
, &fully_p
, NILP (partially
)))
378 in_window
= !NILP (partially
) || fully_p
? Qt
: Qnil
;
387 static struct window
*
388 decode_window (window
)
389 register Lisp_Object window
;
392 return XWINDOW (selected_window
);
394 CHECK_LIVE_WINDOW (window
);
395 return XWINDOW (window
);
398 static struct window
*
399 decode_any_window (window
)
400 register Lisp_Object window
;
403 return XWINDOW (selected_window
);
405 CHECK_WINDOW (window
);
406 return XWINDOW (window
);
409 DEFUN ("window-buffer", Fwindow_buffer
, Swindow_buffer
, 0, 1, 0,
410 doc
: /* Return the buffer that WINDOW is displaying. */)
414 return decode_window (window
)->buffer
;
417 DEFUN ("window-height", Fwindow_height
, Swindow_height
, 0, 1, 0,
418 doc
: /* Return the number of lines in WINDOW (including its mode line). */)
422 return decode_any_window (window
)->total_lines
;
425 DEFUN ("window-width", Fwindow_width
, Swindow_width
, 0, 1, 0,
426 doc
: /* Return the number of display columns in WINDOW.
427 This is the width that is usable columns available for text in WINDOW.
428 If you want to find out how many columns WINDOW takes up,
429 use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */)
433 return make_number (window_box_text_cols (decode_any_window (window
)));
436 DEFUN ("window-hscroll", Fwindow_hscroll
, Swindow_hscroll
, 0, 1, 0,
437 doc
: /* Return the number of columns by which WINDOW is scrolled from left margin. */)
441 return decode_window (window
)->hscroll
;
444 DEFUN ("set-window-hscroll", Fset_window_hscroll
, Sset_window_hscroll
, 2, 2, 0,
445 doc
: /* Set number of columns WINDOW is scrolled from left margin to NCOL.
446 NCOL should be zero or positive.
448 Note that if `automatic-hscrolling' is non-nil, you cannot scroll the
449 window so that the location of point becomes invisible. */)
451 Lisp_Object window
, ncol
;
453 struct window
*w
= decode_window (window
);
457 hscroll
= max (0, XINT (ncol
));
459 /* Prevent redisplay shortcuts when changing the hscroll. */
460 if (XINT (w
->hscroll
) != hscroll
)
461 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
463 w
->hscroll
= make_number (hscroll
);
467 DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger
,
468 Swindow_redisplay_end_trigger
, 0, 1, 0,
469 doc
: /* Return WINDOW's redisplay end trigger value.
470 See `set-window-redisplay-end-trigger' for more information. */)
474 return decode_window (window
)->redisplay_end_trigger
;
477 DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger
,
478 Sset_window_redisplay_end_trigger
, 2, 2, 0,
479 doc
: /* Set WINDOW's redisplay end trigger value to VALUE.
480 VALUE should be a buffer position (typically a marker) or nil.
481 If it is a buffer position, then if redisplay in WINDOW reaches a position
482 beyond VALUE, the functions in `redisplay-end-trigger-functions' are called
483 with two arguments: WINDOW, and the end trigger value.
484 Afterwards the end-trigger value is reset to nil. */)
486 register Lisp_Object window
, value
;
488 register struct window
*w
;
490 w
= decode_window (window
);
491 w
->redisplay_end_trigger
= value
;
495 DEFUN ("window-edges", Fwindow_edges
, Swindow_edges
, 0, 1, 0,
496 doc
: /* Return a list of the edge coordinates of WINDOW.
497 \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
498 RIGHT is one more than the rightmost column occupied by WINDOW,
499 and BOTTOM is one more than the bottommost row occupied by WINDOW.
500 The edges include the space used by the window's scroll bar,
501 display margins, fringes, header line, and mode line, if it has them.
502 To get the edges of the actual text area, use `window-inside-edges'. */)
506 register struct window
*w
= decode_any_window (window
);
508 return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w
)),
509 Fcons (make_number (WINDOW_TOP_EDGE_LINE (w
)),
510 Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w
)),
511 Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w
)),
515 DEFUN ("window-pixel-edges", Fwindow_pixel_edges
, Swindow_pixel_edges
, 0, 1, 0,
516 doc
: /* Return a list of the edge pixel coordinates of WINDOW.
517 \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
518 RIGHT is one more than the rightmost x position occupied by WINDOW,
519 and BOTTOM is one more than the bottommost y position occupied by WINDOW.
520 The pixel edges include the space used by the window's scroll bar,
521 display margins, fringes, header line, and mode line, if it has them.
522 To get the edges of the actual text area, use `window-inside-pixel-edges'. */)
526 register struct window
*w
= decode_any_window (window
);
528 return Fcons (make_number (WINDOW_LEFT_EDGE_X (w
)),
529 Fcons (make_number (WINDOW_TOP_EDGE_Y (w
)),
530 Fcons (make_number (WINDOW_RIGHT_EDGE_X (w
)),
531 Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w
)),
535 DEFUN ("window-inside-edges", Fwindow_inside_edges
, Swindow_inside_edges
, 0, 1, 0,
536 doc
: /* Return a list of the edge coordinates of WINDOW.
537 \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
538 RIGHT is one more than the rightmost column used by text in WINDOW,
539 and BOTTOM is one more than the bottommost row used by text in WINDOW.
540 The inside edges do not include the space used by the window's scroll bar,
541 display margins, fringes, header line, and/or mode line. */)
545 register struct window
*w
= decode_any_window (window
);
547 return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w
)
548 + WINDOW_LEFT_MARGIN_COLS (w
)
549 + WINDOW_LEFT_FRINGE_COLS (w
)),
550 make_number (WINDOW_TOP_EDGE_LINE (w
)
551 + WINDOW_HEADER_LINE_LINES (w
)),
552 make_number (WINDOW_RIGHT_EDGE_COL (w
)
553 - WINDOW_RIGHT_MARGIN_COLS (w
)
554 - WINDOW_RIGHT_FRINGE_COLS (w
)),
555 make_number (WINDOW_BOTTOM_EDGE_LINE (w
)
556 - WINDOW_MODE_LINE_LINES (w
)));
559 DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges
, Swindow_inside_pixel_edges
, 0, 1, 0,
560 doc
: /* Return a list of the edge coordinates of WINDOW.
561 \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
562 RIGHT is one more than the rightmost x position used by text in WINDOW,
563 and BOTTOM is one more than the bottommost y position used by text in WINDOW.
564 The inside edges do not include the space used by the window's scroll bar,
565 display margins, fringes, header line, and/or mode line. */)
569 register struct window
*w
= decode_any_window (window
);
571 return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w
)
572 + WINDOW_LEFT_MARGIN_WIDTH (w
)
573 + WINDOW_LEFT_FRINGE_WIDTH (w
)),
574 make_number (WINDOW_TOP_EDGE_Y (w
)
575 + WINDOW_HEADER_LINE_HEIGHT (w
)),
576 make_number (WINDOW_RIGHT_EDGE_X (w
)
577 - WINDOW_RIGHT_MARGIN_WIDTH (w
)
578 - WINDOW_RIGHT_FRINGE_WIDTH (w
)),
579 make_number (WINDOW_BOTTOM_EDGE_Y (w
)
580 - WINDOW_MODE_LINE_HEIGHT (w
)));
583 /* Test if the character at column *X, row *Y is within window W.
584 If it is not, return ON_NOTHING;
585 if it is in the window's text area,
586 set *x and *y to its location relative to the upper left corner
589 if it is on the window's modeline, return ON_MODE_LINE;
590 if it is on the border between the window and its right sibling,
591 return ON_VERTICAL_BORDER.
592 if it is on the window's top line, return ON_HEADER_LINE;
593 if it is in left or right fringe of the window,
594 return ON_LEFT_FRINGE or ON_RIGHT_FRINGE, and convert *X and *Y
595 to window-relative coordinates;
596 if it is in the marginal area to the left/right of the window,
597 return ON_LEFT_MARGIN or ON_RIGHT_MARGIN, and convert *X and *Y
598 to window-relative coordinates.
600 X and Y are frame relative pixel coordinates. */
602 static enum window_part
603 coordinates_in_window (w
, x
, y
)
604 register struct window
*w
;
607 struct frame
*f
= XFRAME (WINDOW_FRAME (w
));
608 int left_x
, right_x
, top_y
, bottom_y
;
609 enum window_part part
;
610 int ux
= FRAME_COLUMN_WIDTH (f
);
611 int x0
= WINDOW_LEFT_EDGE_X (w
);
612 int x1
= WINDOW_RIGHT_EDGE_X (w
);
613 /* The width of the area where the vertical line can be dragged.
614 (Between mode lines for instance. */
615 int grabbable_width
= ux
;
616 int lmargin_width
, rmargin_width
, text_left
, text_right
;
618 if (*x
< x0
|| *x
>= x1
)
621 /* In what's below, we subtract 1 when computing right_x because we
622 want the rightmost pixel, which is given by left_pixel+width-1. */
623 if (w
->pseudo_window_p
)
626 right_x
= WINDOW_TOTAL_WIDTH (w
) - 1;
627 top_y
= WINDOW_TOP_EDGE_Y (w
);
628 bottom_y
= WINDOW_BOTTOM_EDGE_Y (w
);
632 left_x
= WINDOW_BOX_LEFT_EDGE_X (w
);
633 right_x
= WINDOW_BOX_RIGHT_EDGE_X (w
) - 1;
634 top_y
= WINDOW_TOP_EDGE_Y (w
);
635 bottom_y
= WINDOW_BOTTOM_EDGE_Y (w
);
638 /* Outside any interesting row? */
639 if (*y
< top_y
|| *y
>= bottom_y
)
642 /* On the mode line or header line? If it's near the start of
643 the mode or header line of window that's has a horizontal
644 sibling, say it's on the vertical line. That's to be able
645 to resize windows horizontally in case we're using toolkit
648 if (WINDOW_WANTS_MODELINE_P (w
)
649 && *y
>= bottom_y
- CURRENT_MODE_LINE_HEIGHT (w
))
653 header_vertical_border_check
:
654 /* We're somewhere on the mode line. We consider the place
655 between mode lines of horizontally adjacent mode lines
656 as the vertical border. If scroll bars on the left,
657 return the right window. */
658 if (WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w
)
659 || WINDOW_RIGHTMOST_P (w
))
661 if (!WINDOW_LEFTMOST_P (w
) && abs (*x
- x0
) < grabbable_width
)
662 return ON_VERTICAL_BORDER
;
666 if (abs (*x
- x1
) < grabbable_width
)
667 return ON_VERTICAL_BORDER
;
670 /* Convert X and Y to window relative coordinates.
671 Mode line starts at left edge of window. */
677 if (WINDOW_WANTS_HEADER_LINE_P (w
)
678 && *y
< top_y
+ CURRENT_HEADER_LINE_HEIGHT (w
))
680 part
= ON_HEADER_LINE
;
681 goto header_vertical_border_check
;
684 /* Outside any interesting column? */
685 if (*x
< left_x
|| *x
> right_x
)
688 lmargin_width
= window_box_width (w
, LEFT_MARGIN_AREA
);
689 rmargin_width
= window_box_width (w
, RIGHT_MARGIN_AREA
);
691 text_left
= window_box_left (w
, TEXT_AREA
);
692 text_right
= text_left
+ window_box_width (w
, TEXT_AREA
);
694 if (FRAME_WINDOW_P (f
))
696 if (!w
->pseudo_window_p
697 && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w
)
698 && !WINDOW_RIGHTMOST_P (w
)
699 && (abs (*x
- right_x
) < grabbable_width
))
700 return ON_VERTICAL_BORDER
;
704 /* Need to say "*x > right_x" rather than >=, since on character
705 terminals, the vertical line's x coordinate is right_x. */
706 if (!w
->pseudo_window_p
707 && !WINDOW_RIGHTMOST_P (w
)
708 && *x
> right_x
- ux
)
710 /* On the border on the right side of the window? Assume that
711 this area begins at RIGHT_X minus a canonical char width. */
712 return ON_VERTICAL_BORDER
;
718 if (lmargin_width
> 0
719 && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
)
720 ? (*x
>= left_x
+ WINDOW_LEFT_FRINGE_WIDTH (w
))
721 : (*x
< left_x
+ lmargin_width
)))
724 if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
))
725 *x
-= WINDOW_LEFT_FRINGE_WIDTH (w
);
727 return ON_LEFT_MARGIN
;
730 /* Convert X and Y to window-relative pixel coordinates. */
733 return ON_LEFT_FRINGE
;
736 if (*x
>= text_right
)
738 if (rmargin_width
> 0
739 && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
)
740 ? (*x
< right_x
- WINDOW_RIGHT_FRINGE_WIDTH (w
))
741 : (*x
>= right_x
- rmargin_width
)))
744 if (!WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
))
745 *x
-= WINDOW_RIGHT_FRINGE_WIDTH (w
);
747 return ON_RIGHT_MARGIN
;
750 /* Convert X and Y to window-relative pixel coordinates. */
751 *x
-= left_x
+ WINDOW_LEFT_FRINGE_WIDTH (w
);
753 return ON_RIGHT_FRINGE
;
756 /* Everything special ruled out - must be on text area */
757 *x
-= left_x
+ WINDOW_LEFT_FRINGE_WIDTH (w
);
763 DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p
,
764 Scoordinates_in_window_p
, 2, 2, 0,
765 doc
: /* Return non-nil if COORDINATES are in WINDOW.
766 COORDINATES is a cons of the form (X . Y), X and Y being distances
767 measured in characters from the upper-left corner of the frame.
768 \(0 . 0) denotes the character in the upper left corner of the
770 If COORDINATES are in the text portion of WINDOW,
771 the coordinates relative to the window are returned.
772 If they are in the mode line of WINDOW, `mode-line' is returned.
773 If they are in the top mode line of WINDOW, `header-line' is returned.
774 If they are in the left fringe of WINDOW, `left-fringe' is returned.
775 If they are in the right fringe of WINDOW, `right-fringe' is returned.
776 If they are on the border between WINDOW and its right sibling,
777 `vertical-line' is returned.
778 If they are in the windows's left or right marginal areas, `left-margin'\n\
779 or `right-margin' is returned. */)
780 (coordinates
, window
)
781 register Lisp_Object coordinates
, window
;
788 CHECK_WINDOW (window
);
789 w
= XWINDOW (window
);
790 f
= XFRAME (w
->frame
);
791 CHECK_CONS (coordinates
);
792 lx
= Fcar (coordinates
);
793 ly
= Fcdr (coordinates
);
794 CHECK_NUMBER_OR_FLOAT (lx
);
795 CHECK_NUMBER_OR_FLOAT (ly
);
796 x
= FRAME_PIXEL_X_FROM_CANON_X (f
, lx
);
797 y
= FRAME_PIXEL_Y_FROM_CANON_Y (f
, ly
);
799 switch (coordinates_in_window (w
, &x
, &y
))
805 /* X and Y are now window relative pixel coordinates. Convert
806 them to canonical char units before returning them. */
807 return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f
, x
),
808 FRAME_CANON_Y_FROM_PIXEL_Y (f
, y
));
813 case ON_VERTICAL_BORDER
:
814 return Qvertical_line
;
822 case ON_RIGHT_FRINGE
:
823 return Qright_fringe
;
828 case ON_RIGHT_MARGIN
:
829 return Qright_margin
;
837 /* Callback for foreach_window, used in window_from_coordinates.
838 Check if window W contains coordinates specified by USER_DATA which
839 is actually a pointer to a struct check_window_data CW.
841 Check if window W contains coordinates *CW->x and *CW->y. If it
842 does, return W in *CW->window, as Lisp_Object, and return in
843 *CW->part the part of the window under coordinates *X,*Y. Return
844 zero from this function to stop iterating over windows. */
846 struct check_window_data
850 enum window_part
*part
;
854 check_window_containing (w
, user_data
)
858 struct check_window_data
*cw
= (struct check_window_data
*) user_data
;
859 enum window_part found
;
862 found
= coordinates_in_window (w
, cw
->x
, cw
->y
);
863 if (found
!= ON_NOTHING
)
866 XSETWINDOW (*cw
->window
, w
);
874 /* Find the window containing frame-relative pixel position X/Y and
875 return it as a Lisp_Object.
877 If X, Y is on one of the window's special `window_part' elements,
878 set *PART to the id of that element, and return X and Y converted
879 to window relative coordinates in WX and WY.
881 If there is no window under X, Y return nil and leave *PART
882 unmodified. TOOL_BAR_P non-zero means detect tool-bar windows.
884 This function was previously implemented with a loop cycling over
885 windows with Fnext_window, and starting with the frame's selected
886 window. It turned out that this doesn't work with an
887 implementation of next_window using Vwindow_list, because
888 FRAME_SELECTED_WINDOW (F) is not always contained in the window
889 tree of F when this function is called asynchronously from
890 note_mouse_highlight. The original loop didn't terminate in this
894 window_from_coordinates (f
, x
, y
, part
, wx
, wy
, tool_bar_p
)
897 enum window_part
*part
;
902 struct check_window_data cw
;
903 enum window_part dummy
;
909 cw
.window
= &window
, cw
.x
= &x
, cw
.y
= &y
; cw
.part
= part
;
910 foreach_window (f
, check_window_containing
, &cw
);
912 /* If not found above, see if it's in the tool bar window, if a tool
916 && WINDOWP (f
->tool_bar_window
)
917 && WINDOW_TOTAL_LINES (XWINDOW (f
->tool_bar_window
)) > 0
918 && (coordinates_in_window (XWINDOW (f
->tool_bar_window
), &x
, &y
)
922 window
= f
->tool_bar_window
;
931 DEFUN ("window-at", Fwindow_at
, Swindow_at
, 2, 3, 0,
932 doc
: /* Return window containing coordinates X and Y on FRAME.
933 If omitted, FRAME defaults to the currently selected frame.
934 The top left corner of the frame is considered to be row 0,
937 Lisp_Object x
, y
, frame
;
942 frame
= selected_frame
;
943 CHECK_LIVE_FRAME (frame
);
946 /* Check that arguments are integers or floats. */
947 CHECK_NUMBER_OR_FLOAT (x
);
948 CHECK_NUMBER_OR_FLOAT (y
);
950 return window_from_coordinates (f
,
951 FRAME_PIXEL_X_FROM_CANON_X (f
, x
),
952 FRAME_PIXEL_Y_FROM_CANON_Y (f
, y
),
956 DEFUN ("window-point", Fwindow_point
, Swindow_point
, 0, 1, 0,
957 doc
: /* Return current value of point in WINDOW.
958 For a nonselected window, this is the value point would have
959 if that window were selected.
961 Note that, when WINDOW is the selected window and its buffer
962 is also currently selected, the value returned is the same as (point).
963 It would be more strictly correct to return the `top-level' value
964 of point, outside of any save-excursion forms.
965 But that is hard to define. */)
969 register struct window
*w
= decode_window (window
);
971 if (w
== XWINDOW (selected_window
)
972 && current_buffer
== XBUFFER (w
->buffer
))
974 return Fmarker_position (w
->pointm
);
977 DEFUN ("window-start", Fwindow_start
, Swindow_start
, 0, 1, 0,
978 doc
: /* Return position at which display currently starts in WINDOW.
979 This is updated by redisplay or by calling `set-window-start'. */)
983 return Fmarker_position (decode_window (window
)->start
);
986 /* This is text temporarily removed from the doc string below.
988 This function returns nil if the position is not currently known.
989 That happens when redisplay is preempted and doesn't finish.
990 If in that case you want to compute where the end of the window would
991 have been if redisplay had finished, do this:
993 (goto-char (window-start window))
994 (vertical-motion (1- (window-height window)) window)
997 DEFUN ("window-end", Fwindow_end
, Swindow_end
, 0, 2, 0,
998 doc
: /* Return position at which display currently ends in WINDOW.
999 This is updated by redisplay, when it runs to completion.
1000 Simply changing the buffer text or setting `window-start'
1001 does not update this value.
1002 If UPDATE is non-nil, compute the up-to-date position
1003 if it isn't already recorded. */)
1005 Lisp_Object window
, update
;
1008 struct window
*w
= decode_window (window
);
1014 #if 0 /* This change broke some things. We should make it later. */
1015 /* If we don't know the end position, return nil.
1016 The user can compute it with vertical-motion if he wants to.
1017 It would be nicer to do it automatically,
1018 but that's so slow that it would probably bother people. */
1019 if (NILP (w
->window_end_valid
))
1024 && ! (! NILP (w
->window_end_valid
)
1025 && XFASTINT (w
->last_modified
) >= MODIFF
))
1027 struct text_pos startp
;
1029 struct buffer
*old_buffer
= NULL
, *b
= XBUFFER (buf
);
1031 /* In case W->start is out of the range, use something
1032 reasonable. This situation occurred when loading a file with
1033 `-l' containing a call to `rmail' with subsequent other
1034 commands. At the end, W->start happened to be BEG, while
1035 rmail had already narrowed the buffer. */
1036 if (XMARKER (w
->start
)->charpos
< BEGV
)
1037 SET_TEXT_POS (startp
, BEGV
, BEGV_BYTE
);
1038 else if (XMARKER (w
->start
)->charpos
> ZV
)
1039 SET_TEXT_POS (startp
, ZV
, ZV_BYTE
);
1041 SET_TEXT_POS_FROM_MARKER (startp
, w
->start
);
1043 /* Cannot use Fvertical_motion because that function doesn't
1044 cope with variable-height lines. */
1045 if (b
!= current_buffer
)
1047 old_buffer
= current_buffer
;
1048 set_buffer_internal (b
);
1051 start_display (&it
, w
, startp
);
1052 move_it_vertically (&it
, window_box_height (w
));
1053 if (it
.current_y
< it
.last_visible_y
)
1054 move_it_past_eol (&it
);
1055 value
= make_number (IT_CHARPOS (it
));
1058 set_buffer_internal (old_buffer
);
1061 XSETINT (value
, BUF_Z (XBUFFER (buf
)) - XFASTINT (w
->window_end_pos
));
1066 DEFUN ("set-window-point", Fset_window_point
, Sset_window_point
, 2, 2, 0,
1067 doc
: /* Make point value in WINDOW be at position POS in WINDOW's buffer. */)
1069 Lisp_Object window
, pos
;
1071 register struct window
*w
= decode_window (window
);
1073 CHECK_NUMBER_COERCE_MARKER (pos
);
1074 if (w
== XWINDOW (selected_window
)
1075 && XBUFFER (w
->buffer
) == current_buffer
)
1078 set_marker_restricted (w
->pointm
, pos
, w
->buffer
);
1080 /* We have to make sure that redisplay updates the window to show
1081 the new value of point. */
1082 if (!EQ (window
, selected_window
))
1083 ++windows_or_buffers_changed
;
1088 DEFUN ("set-window-start", Fset_window_start
, Sset_window_start
, 2, 3, 0,
1089 doc
: /* Make display in WINDOW start at position POS in WINDOW's buffer.
1090 Optional third arg NOFORCE non-nil inhibits next redisplay
1091 from overriding motion of point in order to display at this exact start. */)
1092 (window
, pos
, noforce
)
1093 Lisp_Object window
, pos
, noforce
;
1095 register struct window
*w
= decode_window (window
);
1097 CHECK_NUMBER_COERCE_MARKER (pos
);
1098 set_marker_restricted (w
->start
, pos
, w
->buffer
);
1099 /* this is not right, but much easier than doing what is right. */
1100 w
->start_at_line_beg
= Qnil
;
1102 w
->force_start
= Qt
;
1103 w
->update_mode_line
= Qt
;
1104 XSETFASTINT (w
->last_modified
, 0);
1105 XSETFASTINT (w
->last_overlay_modified
, 0);
1106 if (!EQ (window
, selected_window
))
1107 windows_or_buffers_changed
++;
1112 DEFUN ("window-dedicated-p", Fwindow_dedicated_p
, Swindow_dedicated_p
,
1114 doc
: /* Return WINDOW's dedicated object, usually t or nil.
1115 See also `set-window-dedicated-p'. */)
1119 return decode_window (window
)->dedicated
;
1122 DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p
,
1123 Sset_window_dedicated_p
, 2, 2, 0,
1124 doc
: /* Control whether WINDOW is dedicated to the buffer it displays.
1125 If it is dedicated, Emacs will not automatically change
1126 which buffer appears in it.
1127 The second argument is the new value for the dedication flag;
1128 non-nil means yes. */)
1130 Lisp_Object window
, arg
;
1132 register struct window
*w
= decode_window (window
);
1136 return w
->dedicated
;
1139 DEFUN ("window-display-table", Fwindow_display_table
, Swindow_display_table
,
1141 doc
: /* Return the display-table that WINDOW is using. */)
1145 return decode_window (window
)->display_table
;
1148 /* Get the display table for use on window W. This is either W's
1149 display table or W's buffer's display table. Ignore the specified
1150 tables if they are not valid; if no valid table is specified,
1153 struct Lisp_Char_Table
*
1154 window_display_table (w
)
1157 struct Lisp_Char_Table
*dp
= NULL
;
1159 if (DISP_TABLE_P (w
->display_table
))
1160 dp
= XCHAR_TABLE (w
->display_table
);
1161 else if (BUFFERP (w
->buffer
))
1163 struct buffer
*b
= XBUFFER (w
->buffer
);
1165 if (DISP_TABLE_P (b
->display_table
))
1166 dp
= XCHAR_TABLE (b
->display_table
);
1167 else if (DISP_TABLE_P (Vstandard_display_table
))
1168 dp
= XCHAR_TABLE (Vstandard_display_table
);
1174 DEFUN ("set-window-display-table", Fset_window_display_table
, Sset_window_display_table
, 2, 2, 0,
1175 doc
: /* Set WINDOW's display-table to TABLE. */)
1177 register Lisp_Object window
, table
;
1179 register struct window
*w
;
1181 w
= decode_window (window
);
1182 w
->display_table
= table
;
1186 /* Record info on buffer window w is displaying
1187 when it is about to cease to display that buffer. */
1190 register struct window
*w
;
1197 if (b
!= XMARKER (w
->pointm
)->buffer
)
1201 if (w
== XWINDOW (selected_window
)
1202 || ! EQ (buf
, XWINDOW (selected_window
)->buffer
))
1203 /* Do this except when the selected window's buffer
1204 is being removed from some other window. */
1206 /* last_window_start records the start position that this buffer
1207 had in the last window to be disconnected from it.
1208 Now that this statement is unconditional,
1209 it is possible for the buffer to be displayed in the
1210 selected window, while last_window_start reflects another
1211 window which was recently showing the same buffer.
1212 Some people might say that might be a good thing. Let's see. */
1213 b
->last_window_start
= marker_position (w
->start
);
1215 /* Point in the selected window's buffer
1216 is actually stored in that buffer, and the window's pointm isn't used.
1217 So don't clobber point in that buffer. */
1218 if (! EQ (buf
, XWINDOW (selected_window
)->buffer
)
1219 /* This line helps to fix Horsley's testbug.el bug. */
1220 && !(WINDOWP (b
->last_selected_window
)
1221 && w
!= XWINDOW (b
->last_selected_window
)
1222 && EQ (buf
, XWINDOW (b
->last_selected_window
)->buffer
)))
1223 temp_set_point_both (b
,
1224 clip_to_bounds (BUF_BEGV (b
),
1225 XMARKER (w
->pointm
)->charpos
,
1227 clip_to_bounds (BUF_BEGV_BYTE (b
),
1228 marker_byte_position (w
->pointm
),
1231 if (WINDOWP (b
->last_selected_window
)
1232 && w
== XWINDOW (b
->last_selected_window
))
1233 b
->last_selected_window
= Qnil
;
1236 /* Put replacement into the window structure in place of old. */
1238 replace_window (old
, replacement
)
1239 Lisp_Object old
, replacement
;
1241 register Lisp_Object tem
;
1242 register struct window
*o
= XWINDOW (old
), *p
= XWINDOW (replacement
);
1244 /* If OLD is its frame's root_window, then replacement is the new
1245 root_window for that frame. */
1247 if (EQ (old
, FRAME_ROOT_WINDOW (XFRAME (o
->frame
))))
1248 FRAME_ROOT_WINDOW (XFRAME (o
->frame
)) = replacement
;
1250 p
->left_col
= o
->left_col
;
1251 p
->top_line
= o
->top_line
;
1252 p
->total_cols
= o
->total_cols
;
1253 p
->total_lines
= o
->total_lines
;
1254 p
->desired_matrix
= p
->current_matrix
= 0;
1256 bzero (&p
->cursor
, sizeof (p
->cursor
));
1257 bzero (&p
->last_cursor
, sizeof (p
->last_cursor
));
1258 bzero (&p
->phys_cursor
, sizeof (p
->phys_cursor
));
1259 p
->phys_cursor_type
= -1;
1260 p
->phys_cursor_width
= -1;
1261 p
->must_be_updated_p
= 0;
1262 p
->pseudo_window_p
= 0;
1263 XSETFASTINT (p
->window_end_vpos
, 0);
1264 XSETFASTINT (p
->window_end_pos
, 0);
1265 p
->window_end_valid
= Qnil
;
1266 p
->frozen_window_start_p
= 0;
1267 p
->orig_top_line
= p
->orig_total_lines
= Qnil
;
1269 p
->next
= tem
= o
->next
;
1271 XWINDOW (tem
)->prev
= replacement
;
1273 p
->prev
= tem
= o
->prev
;
1275 XWINDOW (tem
)->next
= replacement
;
1277 p
->parent
= tem
= o
->parent
;
1280 if (EQ (XWINDOW (tem
)->vchild
, old
))
1281 XWINDOW (tem
)->vchild
= replacement
;
1282 if (EQ (XWINDOW (tem
)->hchild
, old
))
1283 XWINDOW (tem
)->hchild
= replacement
;
1286 /*** Here, if replacement is a vertical combination
1287 and so is its new parent, we should make replacement's
1288 children be children of that parent instead. ***/
1291 DEFUN ("delete-window", Fdelete_window
, Sdelete_window
, 0, 1, "",
1292 doc
: /* Remove WINDOW from the display. Default is selected window. */)
1294 register Lisp_Object window
;
1296 delete_window (window
);
1298 if (! NILP (Vwindow_configuration_change_hook
)
1299 && ! NILP (Vrun_hooks
))
1300 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
1306 delete_window (window
)
1307 register Lisp_Object window
;
1309 register Lisp_Object tem
, parent
, sib
;
1310 register struct window
*p
;
1311 register struct window
*par
;
1314 /* Because this function is called by other C code on non-leaf
1315 windows, the CHECK_LIVE_WINDOW macro would choke inappropriately,
1316 so we can't decode_window here. */
1318 window
= selected_window
;
1320 CHECK_WINDOW (window
);
1321 p
= XWINDOW (window
);
1323 /* It's okay to delete an already-deleted window. */
1324 if (NILP (p
->buffer
)
1326 && NILP (p
->vchild
))
1331 error ("Attempt to delete minibuffer or sole ordinary window");
1332 par
= XWINDOW (parent
);
1334 windows_or_buffers_changed
++;
1335 Vwindow_list
= Qnil
;
1336 f
= XFRAME (WINDOW_FRAME (p
));
1337 FRAME_WINDOW_SIZES_CHANGED (f
) = 1;
1339 /* Are we trying to delete any frame's selected window? */
1341 Lisp_Object swindow
, pwindow
;
1343 /* See if the frame's selected window is either WINDOW
1344 or any subwindow of it, by finding all that window's parents
1345 and comparing each one with WINDOW. */
1346 swindow
= FRAME_SELECTED_WINDOW (f
);
1351 while (!NILP (pwindow
))
1353 if (EQ (window
, pwindow
))
1355 pwindow
= XWINDOW (pwindow
)->parent
;
1358 /* If the window being deleted is not a parent of SWINDOW,
1359 then SWINDOW is ok as the new selected window. */
1360 if (!EQ (window
, pwindow
))
1362 /* Otherwise, try another window for SWINDOW. */
1363 swindow
= Fnext_window (swindow
, Qlambda
, Qnil
);;
1365 /* If we get back to the frame's selected window,
1366 it means there was no acceptable alternative,
1367 so we cannot delete. */
1368 if (EQ (swindow
, FRAME_SELECTED_WINDOW (f
)))
1369 error ("Cannot delete window");
1372 /* If we need to change SWINDOW, do it. */
1373 if (! EQ (swindow
, FRAME_SELECTED_WINDOW (f
)))
1375 /* If we're about to delete the selected window on the
1376 selected frame, then we should use Fselect_window to select
1377 the new window. On the other hand, if we're about to
1378 delete the selected window on any other frame, we shouldn't do
1379 anything but set the frame's selected_window slot. */
1380 if (EQ (FRAME_SELECTED_WINDOW (f
), selected_window
))
1381 Fselect_window (swindow
, Qnil
);
1383 FRAME_SELECTED_WINDOW (f
) = swindow
;
1388 /* tem is null for dummy parent windows
1389 (which have inferiors but not any contents themselves) */
1393 unchain_marker (XMARKER (p
->pointm
));
1394 unchain_marker (XMARKER (p
->start
));
1397 /* Free window glyph matrices. It is sure that they are allocated
1398 again when ADJUST_GLYPHS is called. Block input so that expose
1399 events and other events that access glyph matrices are not
1400 processed while we are changing them. */
1402 free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f
)));
1406 XWINDOW (tem
)->prev
= p
->prev
;
1410 XWINDOW (tem
)->next
= p
->next
;
1412 if (EQ (window
, par
->hchild
))
1413 par
->hchild
= p
->next
;
1414 if (EQ (window
, par
->vchild
))
1415 par
->vchild
= p
->next
;
1417 /* Find one of our siblings to give our space to. */
1421 /* If p gives its space to its next sibling, that sibling needs
1422 to have its top/left side pulled back to where p's is.
1423 set_window_{height,width} will re-position the sibling's
1426 XWINDOW (sib
)->top_line
= p
->top_line
;
1427 XWINDOW (sib
)->left_col
= p
->left_col
;
1430 /* Stretch that sibling. */
1431 if (!NILP (par
->vchild
))
1432 set_window_height (sib
,
1433 XFASTINT (XWINDOW (sib
)->total_lines
) + XFASTINT (p
->total_lines
),
1435 if (!NILP (par
->hchild
))
1436 set_window_width (sib
,
1437 XFASTINT (XWINDOW (sib
)->total_cols
) + XFASTINT (p
->total_cols
),
1440 /* If parent now has only one child,
1441 put the child into the parent's place. */
1445 if (NILP (XWINDOW (tem
)->next
))
1446 replace_window (parent
, tem
);
1448 /* Since we may be deleting combination windows, we must make sure that
1449 not only p but all its children have been marked as deleted. */
1450 if (! NILP (p
->hchild
))
1451 delete_all_subwindows (XWINDOW (p
->hchild
));
1452 else if (! NILP (p
->vchild
))
1453 delete_all_subwindows (XWINDOW (p
->vchild
));
1455 /* Mark this window as deleted. */
1456 p
->buffer
= p
->hchild
= p
->vchild
= Qnil
;
1458 /* Adjust glyph matrices. */
1465 /***********************************************************************
1467 ***********************************************************************/
1469 /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object
1470 pointer. This is a callback function for foreach_window, used in
1471 function window_list. */
1474 add_window_to_list (w
, user_data
)
1478 Lisp_Object
*list
= (Lisp_Object
*) user_data
;
1480 XSETWINDOW (window
, w
);
1481 *list
= Fcons (window
, *list
);
1486 /* Return a list of all windows, for use by next_window. If
1487 Vwindow_list is a list, return that list. Otherwise, build a new
1488 list, cache it in Vwindow_list, and return that. */
1493 if (!CONSP (Vwindow_list
))
1497 Vwindow_list
= Qnil
;
1498 for (tail
= Vframe_list
; CONSP (tail
); tail
= XCDR (tail
))
1500 Lisp_Object args
[2];
1502 /* We are visiting windows in canonical order, and add
1503 new windows at the front of args[1], which means we
1504 have to reverse this list at the end. */
1506 foreach_window (XFRAME (XCAR (tail
)), add_window_to_list
, &args
[1]);
1507 args
[0] = Vwindow_list
;
1508 args
[1] = Fnreverse (args
[1]);
1509 Vwindow_list
= Fnconc (2, args
);
1513 return Vwindow_list
;
1517 /* Value is non-zero if WINDOW satisfies the constraints given by
1518 OWINDOW, MINIBUF and ALL_FRAMES.
1520 MINIBUF t means WINDOW may be minibuffer windows.
1521 `lambda' means WINDOW may not be a minibuffer window.
1522 a window means a specific minibuffer window
1524 ALL_FRAMES t means search all frames,
1525 nil means search just current frame,
1526 `visible' means search just visible frames,
1527 0 means search visible and iconified frames,
1528 a window means search the frame that window belongs to,
1529 a frame means consider windows on that frame, only. */
1532 candidate_window_p (window
, owindow
, minibuf
, all_frames
)
1533 Lisp_Object window
, owindow
, minibuf
, all_frames
;
1535 struct window
*w
= XWINDOW (window
);
1536 struct frame
*f
= XFRAME (w
->frame
);
1537 int candidate_p
= 1;
1539 if (!BUFFERP (w
->buffer
))
1541 else if (MINI_WINDOW_P (w
)
1542 && (EQ (minibuf
, Qlambda
)
1543 || (WINDOWP (minibuf
) && !EQ (minibuf
, window
))))
1545 /* If MINIBUF is `lambda' don't consider any mini-windows.
1546 If it is a window, consider only that one. */
1549 else if (EQ (all_frames
, Qt
))
1551 else if (NILP (all_frames
))
1553 xassert (WINDOWP (owindow
));
1554 candidate_p
= EQ (w
->frame
, XWINDOW (owindow
)->frame
);
1556 else if (EQ (all_frames
, Qvisible
))
1558 FRAME_SAMPLE_VISIBILITY (f
);
1559 candidate_p
= FRAME_VISIBLE_P (f
);
1561 else if (INTEGERP (all_frames
) && XINT (all_frames
) == 0)
1563 FRAME_SAMPLE_VISIBILITY (f
);
1564 candidate_p
= FRAME_VISIBLE_P (f
) || FRAME_ICONIFIED_P (f
);
1566 else if (WINDOWP (all_frames
))
1567 candidate_p
= (EQ (FRAME_MINIBUF_WINDOW (f
), all_frames
)
1568 || EQ (XWINDOW (all_frames
)->frame
, w
->frame
)
1569 || EQ (XWINDOW (all_frames
)->frame
, FRAME_FOCUS_FRAME (f
)));
1570 else if (FRAMEP (all_frames
))
1571 candidate_p
= EQ (all_frames
, w
->frame
);
1577 /* Decode arguments as allowed by Fnext_window, Fprevious_window, and
1578 Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and
1582 decode_next_window_args (window
, minibuf
, all_frames
)
1583 Lisp_Object
*window
, *minibuf
, *all_frames
;
1586 *window
= selected_window
;
1588 CHECK_LIVE_WINDOW (*window
);
1590 /* MINIBUF nil may or may not include minibuffers. Decide if it
1592 if (NILP (*minibuf
))
1593 *minibuf
= minibuf_level
? minibuf_window
: Qlambda
;
1594 else if (!EQ (*minibuf
, Qt
))
1597 /* Now *MINIBUF can be t => count all minibuffer windows, `lambda'
1598 => count none of them, or a specific minibuffer window (the
1599 active one) to count. */
1601 /* ALL_FRAMES nil doesn't specify which frames to include. */
1602 if (NILP (*all_frames
))
1603 *all_frames
= (!EQ (*minibuf
, Qlambda
)
1604 ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window
)->frame
))
1606 else if (EQ (*all_frames
, Qvisible
))
1608 else if (XFASTINT (*all_frames
) == 0)
1610 else if (FRAMEP (*all_frames
))
1612 else if (!EQ (*all_frames
, Qt
))
1615 /* Now *ALL_FRAMES is t meaning search all frames, nil meaning
1616 search just current frame, `visible' meaning search just visible
1617 frames, 0 meaning search visible and iconified frames, or a
1618 window, meaning search the frame that window belongs to, or a
1619 frame, meaning consider windows on that frame, only. */
1623 /* Return the next or previous window of WINDOW in canonical ordering
1624 of windows. NEXT_P non-zero means return the next window. See the
1625 documentation string of next-window for the meaning of MINIBUF and
1629 next_window (window
, minibuf
, all_frames
, next_p
)
1630 Lisp_Object window
, minibuf
, all_frames
;
1633 decode_next_window_args (&window
, &minibuf
, &all_frames
);
1635 /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just
1636 return the first window on the frame. */
1637 if (FRAMEP (all_frames
)
1638 && !EQ (all_frames
, XWINDOW (window
)->frame
))
1639 return Fframe_first_window (all_frames
);
1645 /* Find WINDOW in the list of all windows. */
1646 list
= Fmemq (window
, window_list ());
1648 /* Scan forward from WINDOW to the end of the window list. */
1650 for (list
= XCDR (list
); CONSP (list
); list
= XCDR (list
))
1651 if (candidate_window_p (XCAR (list
), window
, minibuf
, all_frames
))
1654 /* Scan from the start of the window list up to WINDOW. */
1656 for (list
= Vwindow_list
;
1657 CONSP (list
) && !EQ (XCAR (list
), window
);
1659 if (candidate_window_p (XCAR (list
), window
, minibuf
, all_frames
))
1663 window
= XCAR (list
);
1667 Lisp_Object candidate
, list
;
1669 /* Scan through the list of windows for candidates. If there are
1670 candidate windows in front of WINDOW, the last one of these
1671 is the one we want. If there are candidates following WINDOW
1672 in the list, again the last one of these is the one we want. */
1674 for (list
= window_list (); CONSP (list
); list
= XCDR (list
))
1676 if (EQ (XCAR (list
), window
))
1678 if (WINDOWP (candidate
))
1681 else if (candidate_window_p (XCAR (list
), window
, minibuf
,
1683 candidate
= XCAR (list
);
1686 if (WINDOWP (candidate
))
1694 DEFUN ("next-window", Fnext_window
, Snext_window
, 0, 3, 0,
1695 doc
: /* Return next window after WINDOW in canonical ordering of windows.
1696 If omitted, WINDOW defaults to the selected window.
1698 Optional second arg MINIBUF t means count the minibuffer window even
1699 if not active. MINIBUF nil or omitted means count the minibuffer iff
1700 it is active. MINIBUF neither t nor nil means not to count the
1701 minibuffer even if it is active.
1703 Several frames may share a single minibuffer; if the minibuffer
1704 counts, all windows on all frames that share that minibuffer count
1705 too. Therefore, `next-window' can be used to iterate through the
1706 set of windows even when the minibuffer is on another frame. If the
1707 minibuffer does not count, only windows from WINDOW's frame count.
1709 Optional third arg ALL-FRAMES t means include windows on all frames.
1710 ALL-FRAMES nil or omitted means cycle within the frames as specified
1711 above. ALL-FRAMES = `visible' means include windows on all visible frames.
1712 ALL-FRAMES = 0 means include windows on all visible and iconified frames.
1713 If ALL-FRAMES is a frame, restrict search to windows on that frame.
1714 Anything else means restrict to WINDOW's frame.
1716 If you use consistent values for MINIBUF and ALL-FRAMES, you can use
1717 `next-window' to iterate through the entire cycle of acceptable
1718 windows, eventually ending up back at the window you started with.
1719 `previous-window' traverses the same cycle, in the reverse order. */)
1720 (window
, minibuf
, all_frames
)
1721 Lisp_Object window
, minibuf
, all_frames
;
1723 return next_window (window
, minibuf
, all_frames
, 1);
1727 DEFUN ("previous-window", Fprevious_window
, Sprevious_window
, 0, 3, 0,
1728 doc
: /* Return the window preceding WINDOW in canonical ordering of windows.
1729 If omitted, WINDOW defaults to the selected window.
1731 Optional second arg MINIBUF t means count the minibuffer window even
1732 if not active. MINIBUF nil or omitted means count the minibuffer iff
1733 it is active. MINIBUF neither t nor nil means not to count the
1734 minibuffer even if it is active.
1736 Several frames may share a single minibuffer; if the minibuffer
1737 counts, all windows on all frames that share that minibuffer count
1738 too. Therefore, `previous-window' can be used to iterate through
1739 the set of windows even when the minibuffer is on another frame. If
1740 the minibuffer does not count, only windows from WINDOW's frame count
1742 Optional third arg ALL-FRAMES t means include windows on all frames.
1743 ALL-FRAMES nil or omitted means cycle within the frames as specified
1744 above. ALL-FRAMES = `visible' means include windows on all visible frames.
1745 ALL-FRAMES = 0 means include windows on all visible and iconified frames.
1746 If ALL-FRAMES is a frame, restrict search to windows on that frame.
1747 Anything else means restrict to WINDOW's frame.
1749 If you use consistent values for MINIBUF and ALL-FRAMES, you can use
1750 `previous-window' to iterate through the entire cycle of acceptable
1751 windows, eventually ending up back at the window you started with.
1752 `next-window' traverses the same cycle, in the reverse order. */)
1753 (window
, minibuf
, all_frames
)
1754 Lisp_Object window
, minibuf
, all_frames
;
1756 return next_window (window
, minibuf
, all_frames
, 0);
1760 DEFUN ("other-window", Fother_window
, Sother_window
, 1, 2, "p",
1761 doc
: /* Select the ARG'th different window on this frame.
1762 All windows on current frame are arranged in a cyclic order.
1763 This command selects the window ARG steps away in that order.
1764 A negative ARG moves in the opposite order. If the optional second
1765 argument ALL_FRAMES is non-nil, cycle through all frames. */)
1767 Lisp_Object arg
, all_frames
;
1773 window
= selected_window
;
1775 for (i
= XINT (arg
); i
> 0; --i
)
1776 window
= Fnext_window (window
, Qnil
, all_frames
);
1778 window
= Fprevious_window (window
, Qnil
, all_frames
);
1780 Fselect_window (window
, Qnil
);
1785 DEFUN ("window-list", Fwindow_list
, Swindow_list
, 0, 3, 0,
1786 doc
: /* Return a list of windows on FRAME, starting with WINDOW.
1787 FRAME nil or omitted means use the selected frame.
1788 WINDOW nil or omitted means use the selected window.
1789 MINIBUF t means include the minibuffer window, even if it isn't active.
1790 MINIBUF nil or omitted means include the minibuffer window only
1792 MINIBUF neither nil nor t means never include the minibuffer window. */)
1793 (frame
, minibuf
, window
)
1794 Lisp_Object frame
, minibuf
, window
;
1797 window
= selected_window
;
1799 frame
= selected_frame
;
1801 if (!EQ (frame
, XWINDOW (window
)->frame
))
1802 error ("Window is on a different frame");
1804 return window_list_1 (window
, minibuf
, frame
);
1808 /* Return a list of windows in canonical ordering. Arguments are like
1809 for `next-window'. */
1812 window_list_1 (window
, minibuf
, all_frames
)
1813 Lisp_Object window
, minibuf
, all_frames
;
1815 Lisp_Object tail
, list
;
1817 decode_next_window_args (&window
, &minibuf
, &all_frames
);
1820 for (tail
= window_list (); CONSP (tail
); tail
= XCDR (tail
))
1821 if (candidate_window_p (XCAR (tail
), window
, minibuf
, all_frames
))
1822 list
= Fcons (XCAR (tail
), list
);
1824 return Fnreverse (list
);
1829 /* Look at all windows, performing an operation specified by TYPE
1831 If FRAMES is Qt, look at all frames;
1832 Qnil, look at just the selected frame;
1833 Qvisible, look at visible frames;
1834 a frame, just look at windows on that frame.
1835 If MINI is non-zero, perform the operation on minibuffer windows too. */
1840 GET_BUFFER_WINDOW
, /* Arg is buffer */
1841 GET_LRU_WINDOW
, /* Arg is t for full-width windows only */
1842 DELETE_OTHER_WINDOWS
, /* Arg is window not to delete */
1843 DELETE_BUFFER_WINDOWS
, /* Arg is buffer */
1845 UNSHOW_BUFFER
, /* Arg is buffer */
1846 REDISPLAY_BUFFER_WINDOWS
, /* Arg is buffer */
1851 window_loop (type
, obj
, mini
, frames
)
1852 enum window_loop type
;
1853 Lisp_Object obj
, frames
;
1856 Lisp_Object window
, windows
, best_window
, frame_arg
;
1858 struct gcpro gcpro1
;
1860 /* If we're only looping through windows on a particular frame,
1861 frame points to that frame. If we're looping through windows
1862 on all frames, frame is 0. */
1863 if (FRAMEP (frames
))
1864 f
= XFRAME (frames
);
1865 else if (NILP (frames
))
1866 f
= SELECTED_FRAME ();
1871 frame_arg
= Qlambda
;
1872 else if (XFASTINT (frames
) == 0)
1874 else if (EQ (frames
, Qvisible
))
1879 /* frame_arg is Qlambda to stick to one frame,
1880 Qvisible to consider all visible frames,
1883 /* Pick a window to start with. */
1887 window
= FRAME_SELECTED_WINDOW (f
);
1889 window
= FRAME_SELECTED_WINDOW (SELECTED_FRAME ());
1891 windows
= window_list_1 (window
, mini
? Qt
: Qnil
, frame_arg
);
1895 for (; CONSP (windows
); windows
= CDR (windows
))
1899 window
= XCAR (windows
);
1900 w
= XWINDOW (window
);
1902 /* Note that we do not pay attention here to whether the frame
1903 is visible, since Fwindow_list skips non-visible frames if
1904 that is desired, under the control of frame_arg. */
1905 if (!MINI_WINDOW_P (w
)
1906 /* For UNSHOW_BUFFER, we must always consider all windows. */
1907 || type
== UNSHOW_BUFFER
1908 || (mini
&& minibuf_level
> 0))
1911 case GET_BUFFER_WINDOW
:
1912 if (EQ (w
->buffer
, obj
)
1913 /* Don't find any minibuffer window
1914 except the one that is currently in use. */
1915 && (MINI_WINDOW_P (w
)
1916 ? EQ (window
, minibuf_window
)
1919 if (NILP (best_window
))
1920 best_window
= window
;
1921 else if (EQ (window
, selected_window
))
1922 /* For compatibility with 20.x, prefer to return
1924 best_window
= window
;
1928 case GET_LRU_WINDOW
:
1929 /* t as arg means consider only full-width windows */
1930 if (!NILP (obj
) && !WINDOW_FULL_WIDTH_P (w
))
1932 /* Ignore dedicated windows and minibuffers. */
1933 if (MINI_WINDOW_P (w
) || EQ (w
->dedicated
, Qt
))
1935 if (NILP (best_window
)
1936 || (XFASTINT (XWINDOW (best_window
)->use_time
)
1937 > XFASTINT (w
->use_time
)))
1938 best_window
= window
;
1941 case DELETE_OTHER_WINDOWS
:
1942 if (!EQ (window
, obj
))
1943 Fdelete_window (window
);
1946 case DELETE_BUFFER_WINDOWS
:
1947 if (EQ (w
->buffer
, obj
))
1949 struct frame
*f
= XFRAME (WINDOW_FRAME (w
));
1951 /* If this window is dedicated, and in a frame of its own,
1953 if (EQ (window
, FRAME_ROOT_WINDOW (f
))
1954 && !NILP (w
->dedicated
)
1955 && other_visible_frames (f
))
1957 /* Skip the other windows on this frame.
1958 There might be one, the minibuffer! */
1959 while (CONSP (XCDR (windows
))
1960 && EQ (XWINDOW (XCAR (windows
))->frame
,
1961 XWINDOW (XCAR (XCDR (windows
)))->frame
))
1962 windows
= XCDR (windows
);
1964 /* Now we can safely delete the frame. */
1965 Fdelete_frame (w
->frame
, Qnil
);
1967 else if (NILP (w
->parent
))
1969 /* If we're deleting the buffer displayed in the
1970 only window on the frame, find a new buffer to
1973 buffer
= Fother_buffer (obj
, Qnil
, w
->frame
);
1974 Fset_window_buffer (window
, buffer
, Qnil
);
1975 if (EQ (window
, selected_window
))
1976 Fset_buffer (w
->buffer
);
1979 Fdelete_window (window
);
1983 case GET_LARGEST_WINDOW
:
1985 /* Ignore dedicated windows and minibuffers. */
1986 if (MINI_WINDOW_P (w
) || EQ (w
->dedicated
, Qt
))
1989 if (NILP (best_window
))
1990 best_window
= window
;
1993 struct window
*b
= XWINDOW (best_window
);
1994 if (XFASTINT (w
->total_lines
) * XFASTINT (w
->total_cols
)
1995 > XFASTINT (b
->total_lines
) * XFASTINT (b
->total_cols
))
1996 best_window
= window
;
2002 if (EQ (w
->buffer
, obj
))
2005 struct frame
*f
= XFRAME (w
->frame
);
2007 /* Find another buffer to show in this window. */
2008 buffer
= Fother_buffer (obj
, Qnil
, w
->frame
);
2010 /* If this window is dedicated, and in a frame of its own,
2012 if (EQ (window
, FRAME_ROOT_WINDOW (f
))
2013 && !NILP (w
->dedicated
)
2014 && other_visible_frames (f
))
2016 /* Skip the other windows on this frame.
2017 There might be one, the minibuffer! */
2018 while (CONSP (XCDR (windows
))
2019 && EQ (XWINDOW (XCAR (windows
))->frame
,
2020 XWINDOW (XCAR (XCDR (windows
)))->frame
))
2021 windows
= XCDR (windows
);
2023 /* Now we can safely delete the frame. */
2024 Fdelete_frame (w
->frame
, Qnil
);
2026 else if (!NILP (w
->dedicated
) && !NILP (w
->parent
))
2029 XSETWINDOW (window
, w
);
2030 /* If this window is dedicated and not the only window
2031 in its frame, then kill it. */
2032 Fdelete_window (window
);
2036 /* Otherwise show a different buffer in the window. */
2037 w
->dedicated
= Qnil
;
2038 Fset_window_buffer (window
, buffer
, Qnil
);
2039 if (EQ (window
, selected_window
))
2040 Fset_buffer (w
->buffer
);
2045 case REDISPLAY_BUFFER_WINDOWS
:
2046 if (EQ (w
->buffer
, obj
))
2048 mark_window_display_accurate (window
, 0);
2049 best_window
= window
;
2053 /* Check for a window that has a killed buffer. */
2054 case CHECK_ALL_WINDOWS
:
2055 if (! NILP (w
->buffer
)
2056 && NILP (XBUFFER (w
->buffer
)->name
))
2060 case WINDOW_LOOP_UNUSED
:
2069 /* Used for debugging. Abort if any window has a dead buffer. */
2072 check_all_windows ()
2074 window_loop (CHECK_ALL_WINDOWS
, Qnil
, 1, Qt
);
2077 DEFUN ("get-lru-window", Fget_lru_window
, Sget_lru_window
, 0, 1, 0,
2078 doc
: /* Return the window least recently selected or used for display.
2079 If optional argument FRAME is `visible', search all visible frames.
2080 If FRAME is 0, search all visible and iconified frames.
2081 If FRAME is t, search all frames.
2082 If FRAME is nil, search only the selected frame.
2083 If FRAME is a frame, search only that frame. */)
2087 register Lisp_Object w
;
2088 /* First try for a window that is full-width */
2089 w
= window_loop (GET_LRU_WINDOW
, Qt
, 0, frame
);
2090 if (!NILP (w
) && !EQ (w
, selected_window
))
2092 /* If none of them, try the rest */
2093 return window_loop (GET_LRU_WINDOW
, Qnil
, 0, frame
);
2096 DEFUN ("get-largest-window", Fget_largest_window
, Sget_largest_window
, 0, 1, 0,
2097 doc
: /* Return the largest window in area.
2098 If optional argument FRAME is `visible', search all visible frames.
2099 If FRAME is 0, search all visible and iconified frames.
2100 If FRAME is t, search all frames.
2101 If FRAME is nil, search only the selected frame.
2102 If FRAME is a frame, search only that frame. */)
2106 return window_loop (GET_LARGEST_WINDOW
, Qnil
, 0,
2110 DEFUN ("get-buffer-window", Fget_buffer_window
, Sget_buffer_window
, 1, 2, 0,
2111 doc
: /* Return a window currently displaying BUFFER, or nil if none.
2112 If optional argument FRAME is `visible', search all visible frames.
2113 If optional argument FRAME is 0, search all visible and iconified frames.
2114 If FRAME is t, search all frames.
2115 If FRAME is nil, search only the selected frame.
2116 If FRAME is a frame, search only that frame. */)
2118 Lisp_Object buffer
, frame
;
2120 buffer
= Fget_buffer (buffer
);
2121 if (BUFFERP (buffer
))
2122 return window_loop (GET_BUFFER_WINDOW
, buffer
, 1, frame
);
2127 DEFUN ("delete-other-windows", Fdelete_other_windows
, Sdelete_other_windows
,
2129 doc
: /* Make WINDOW (or the selected window) fill its frame.
2130 Only the frame WINDOW is on is affected.
2131 This function tries to reduce display jumps
2132 by keeping the text previously visible in WINDOW
2133 in the same place on the frame. Doing this depends on
2134 the value of (window-start WINDOW), so if calling this function
2135 in a program gives strange scrolling, make sure the window-start
2136 value is reasonable when this function is called. */)
2145 window
= selected_window
;
2147 CHECK_LIVE_WINDOW (window
);
2148 w
= XWINDOW (window
);
2150 startpos
= marker_position (w
->start
);
2151 top
= WINDOW_TOP_EDGE_LINE (w
) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w
)));
2153 if (MINI_WINDOW_P (w
) && top
> 0)
2154 error ("Can't expand minibuffer to full frame");
2156 window_loop (DELETE_OTHER_WINDOWS
, window
, 0, WINDOW_FRAME (w
));
2158 /* Try to minimize scrolling, by setting the window start to the point
2159 will cause the text at the old window start to be at the same place
2160 on the frame. But don't try to do this if the window start is
2161 outside the visible portion (as might happen when the display is
2162 not current, due to typeahead). */
2163 new_top
= WINDOW_TOP_EDGE_LINE (w
) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w
)));
2165 && startpos
>= BUF_BEGV (XBUFFER (w
->buffer
))
2166 && startpos
<= BUF_ZV (XBUFFER (w
->buffer
)))
2168 struct position pos
;
2169 struct buffer
*obuf
= current_buffer
;
2171 Fset_buffer (w
->buffer
);
2172 /* This computation used to temporarily move point, but that can
2173 have unwanted side effects due to text properties. */
2174 pos
= *vmotion (startpos
, -top
, w
);
2176 set_marker_both (w
->start
, w
->buffer
, pos
.bufpos
, pos
.bytepos
);
2177 w
->window_end_valid
= Qnil
;
2178 w
->start_at_line_beg
= ((pos
.bytepos
== BEGV_BYTE
2179 || FETCH_BYTE (pos
.bytepos
- 1) == '\n') ? Qt
2181 /* We need to do this, so that the window-scroll-functions
2183 w
->optional_new_start
= Qt
;
2185 set_buffer_internal (obuf
);
2191 DEFUN ("delete-windows-on", Fdelete_windows_on
, Sdelete_windows_on
,
2192 1, 2, "bDelete windows on (buffer): ",
2193 doc
: /* Delete all windows showing BUFFER.
2194 Optional second argument FRAME controls which frames are affected.
2195 If optional argument FRAME is `visible', search all visible frames.
2196 If FRAME is 0, search all visible and iconified frames.
2197 If FRAME is nil, search all frames.
2198 If FRAME is t, search only the selected frame.
2199 If FRAME is a frame, search only that frame. */)
2201 Lisp_Object buffer
, frame
;
2203 /* FRAME uses t and nil to mean the opposite of what window_loop
2207 else if (EQ (frame
, Qt
))
2212 buffer
= Fget_buffer (buffer
);
2213 CHECK_BUFFER (buffer
);
2214 window_loop (DELETE_BUFFER_WINDOWS
, buffer
, 0, frame
);
2220 DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows
,
2221 Sreplace_buffer_in_windows
,
2222 1, 1, "bReplace buffer in windows: ",
2223 doc
: /* Replace BUFFER with some other buffer in all windows showing it. */)
2229 buffer
= Fget_buffer (buffer
);
2230 CHECK_BUFFER (buffer
);
2231 window_loop (UNSHOW_BUFFER
, buffer
, 0, Qt
);
2236 /* Replace BUFFER with some other buffer in all windows
2237 of all frames, even those on other keyboards. */
2240 replace_buffer_in_all_windows (buffer
)
2244 Lisp_Object tail
, frame
;
2246 /* A single call to window_loop won't do the job
2247 because it only considers frames on the current keyboard.
2248 So loop manually over frames, and handle each one. */
2249 FOR_EACH_FRAME (tail
, frame
)
2250 window_loop (UNSHOW_BUFFER
, buffer
, 1, frame
);
2252 window_loop (UNSHOW_BUFFER
, buffer
, 1, Qt
);
2256 /* Set the height of WINDOW and all its inferiors. */
2258 /* The smallest acceptable dimensions for a window. Anything smaller
2259 might crash Emacs. */
2261 #define MIN_SAFE_WINDOW_WIDTH (2)
2262 #define MIN_SAFE_WINDOW_HEIGHT (1)
2264 /* Make sure that window_min_height and window_min_width are
2265 not too small; if they are, set them to safe minima. */
2268 check_min_window_sizes ()
2270 /* Smaller values might permit a crash. */
2271 if (window_min_width
< MIN_SAFE_WINDOW_WIDTH
)
2272 window_min_width
= MIN_SAFE_WINDOW_WIDTH
;
2273 if (window_min_height
< MIN_SAFE_WINDOW_HEIGHT
)
2274 window_min_height
= MIN_SAFE_WINDOW_HEIGHT
;
2277 /* If *ROWS or *COLS are too small a size for FRAME, set them to the
2278 minimum allowable size. */
2281 check_frame_size (frame
, rows
, cols
)
2285 /* For height, we have to see:
2286 how many windows the frame has at minimum (one or two),
2287 and whether it has a menu bar or other special stuff at the top. */
2289 = ((FRAME_MINIBUF_ONLY_P (frame
) || ! FRAME_HAS_MINIBUF_P (frame
))
2290 ? MIN_SAFE_WINDOW_HEIGHT
2291 : 2 * MIN_SAFE_WINDOW_HEIGHT
);
2293 if (FRAME_TOP_MARGIN (frame
) > 0)
2294 min_height
+= FRAME_TOP_MARGIN (frame
);
2296 if (*rows
< min_height
)
2298 if (*cols
< MIN_SAFE_WINDOW_WIDTH
)
2299 *cols
= MIN_SAFE_WINDOW_WIDTH
;
2303 /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means
2304 check if W's width can be changed, otherwise check W's height.
2305 CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's
2306 siblings, too. If none of the siblings is resizable, WINDOW isn't
2310 window_fixed_size_p (w
, width_p
, check_siblings_p
)
2312 int width_p
, check_siblings_p
;
2317 if (!NILP (w
->hchild
))
2319 c
= XWINDOW (w
->hchild
);
2323 /* A horiz. combination is fixed-width if all of if its
2325 while (c
&& window_fixed_size_p (c
, width_p
, 0))
2326 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2327 fixed_p
= c
== NULL
;
2331 /* A horiz. combination is fixed-height if one of if its
2333 while (c
&& !window_fixed_size_p (c
, width_p
, 0))
2334 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2335 fixed_p
= c
!= NULL
;
2338 else if (!NILP (w
->vchild
))
2340 c
= XWINDOW (w
->vchild
);
2344 /* A vert. combination is fixed-width if one of if its
2346 while (c
&& !window_fixed_size_p (c
, width_p
, 0))
2347 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2348 fixed_p
= c
!= NULL
;
2352 /* A vert. combination is fixed-height if all of if its
2354 while (c
&& window_fixed_size_p (c
, width_p
, 0))
2355 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2356 fixed_p
= c
== NULL
;
2359 else if (BUFFERP (w
->buffer
))
2361 if (w
->height_fixed_p
&& !width_p
)
2365 struct buffer
*old
= current_buffer
;
2368 current_buffer
= XBUFFER (w
->buffer
);
2369 val
= find_symbol_value (Qwindow_size_fixed
);
2370 current_buffer
= old
;
2373 if (!EQ (val
, Qunbound
))
2375 fixed_p
= !NILP (val
);
2378 && ((EQ (val
, Qheight
) && width_p
)
2379 || (EQ (val
, Qwidth
) && !width_p
)))
2384 /* Can't tell if this one is resizable without looking at
2385 siblings. If all siblings are fixed-size this one is too. */
2386 if (!fixed_p
&& check_siblings_p
&& WINDOWP (w
->parent
))
2390 for (child
= w
->prev
; !NILP (child
); child
= XWINDOW (child
)->prev
)
2391 if (!window_fixed_size_p (XWINDOW (child
), width_p
, 0))
2395 for (child
= w
->next
; !NILP (child
); child
= XWINDOW (child
)->next
)
2396 if (!window_fixed_size_p (XWINDOW (child
), width_p
, 0))
2410 /* Return the minimum size of window W, not taking fixed-width windows
2411 into account. WIDTH_P non-zero means return the minimum width,
2412 otherwise return the minimum height. If W is a combination window,
2413 compute the minimum size from the minimum sizes of W's children. */
2416 window_min_size_1 (w
, width_p
)
2423 if (!NILP (w
->hchild
))
2425 c
= XWINDOW (w
->hchild
);
2430 /* The min width of a horizontal combination is
2431 the sum of the min widths of its children. */
2434 size
+= window_min_size_1 (c
, width_p
);
2435 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2440 /* The min height a horizontal combination equals
2441 the maximum of all min height of its children. */
2444 int min_size
= window_min_size_1 (c
, width_p
);
2445 size
= max (min_size
, size
);
2446 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2450 else if (!NILP (w
->vchild
))
2452 c
= XWINDOW (w
->vchild
);
2457 /* The min width of a vertical combination is
2458 the maximum of the min widths of its children. */
2461 int min_size
= window_min_size_1 (c
, width_p
);
2462 size
= max (min_size
, size
);
2463 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2468 /* The min height of a vertical combination equals
2469 the sum of the min height of its children. */
2472 size
+= window_min_size_1 (c
, width_p
);
2473 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2480 size
= window_min_width
;
2483 if (MINI_WINDOW_P (w
)
2484 || (!WINDOW_WANTS_MODELINE_P (w
)
2485 && !WINDOW_WANTS_HEADER_LINE_P (w
)))
2488 size
= window_min_height
;
2496 /* Return the minimum size of window W, taking fixed-size windows into
2497 account. WIDTH_P non-zero means return the minimum width,
2498 otherwise return the minimum height. IGNORE_FIXED_P non-zero means
2499 ignore if W is fixed-size. Set *FIXED to 1 if W is fixed-size
2500 unless FIXED is null. */
2503 window_min_size (w
, width_p
, ignore_fixed_p
, fixed
)
2505 int width_p
, ignore_fixed_p
, *fixed
;
2512 fixed_p
= window_fixed_size_p (w
, width_p
, 1);
2518 size
= width_p
? XFASTINT (w
->total_cols
) : XFASTINT (w
->total_lines
);
2520 size
= window_min_size_1 (w
, width_p
);
2526 /* Adjust the margins of window W if text area is too small.
2527 Return 1 if window width is ok after adjustment; 0 if window
2528 is still too narrow. */
2531 adjust_window_margins (w
)
2534 int box_cols
= (WINDOW_TOTAL_COLS (w
)
2535 - WINDOW_FRINGE_COLS (w
)
2536 - WINDOW_SCROLL_BAR_COLS (w
));
2537 int margin_cols
= (WINDOW_LEFT_MARGIN_COLS (w
)
2538 + WINDOW_RIGHT_MARGIN_COLS (w
));
2540 if (box_cols
- margin_cols
>= MIN_SAFE_WINDOW_WIDTH
)
2543 if (margin_cols
< 0 || box_cols
< MIN_SAFE_WINDOW_WIDTH
)
2546 /* Window's text area is too narrow, but reducing the window
2547 margins will fix that. */
2548 margin_cols
= box_cols
- MIN_SAFE_WINDOW_WIDTH
;
2549 if (WINDOW_RIGHT_MARGIN_COLS (w
) > 0)
2551 if (WINDOW_LEFT_MARGIN_COLS (w
) > 0)
2552 w
->left_margin_cols
= w
->right_margin_cols
2553 = make_number (margin_cols
/2);
2555 w
->right_margin_cols
= make_number (margin_cols
);
2558 w
->left_margin_cols
= make_number (margin_cols
);
2562 /* Calculate new sizes for windows in the list FORWARD when the window size
2563 goes from TOTAL to SIZE. TOTAL must be greater than SIZE.
2564 The number of windows in FORWARD is NCHILDREN, and the number that
2565 can shrink is SHRINKABLE.
2566 The minimum size a window can have is MIN_SIZE.
2567 If we are shrinking fixed windows, RESIZE_FIXED_P is non-zero.
2568 If we are shrinking columns, WIDTH_P is non-zero, otherwise we are
2571 This function returns an allocated array of new sizes that the caller
2572 must free. The size -1 means the window is fixed and RESIZE_FIXED_P
2573 is zero. Array index 0 refers to the first window in FORWARD, 1 to
2574 the second, and so on.
2576 This function tries to keep windows at least at the minimum size
2577 and resize other windows before it resizes any window to zero (i.e.
2578 delete that window).
2580 Windows are resized proportional to their size, so bigger windows
2581 shrink more than smaller windows. */
2583 shrink_windows (total
, size
, nchildren
, shrinkable
,
2584 min_size
, resize_fixed_p
, forward
, width_p
)
2585 int total
, size
, nchildren
, shrinkable
, min_size
;
2586 int resize_fixed_p
, width_p
;
2587 Lisp_Object forward
;
2589 int available_resize
= 0;
2593 int smallest
= total
;
2594 int total_removed
= 0;
2595 int total_shrink
= total
- size
;
2598 new_sizes
= xmalloc (sizeof (*new_sizes
) * nchildren
);
2600 for (i
= 0, child
= forward
; !NILP (child
); child
= c
->next
, ++i
)
2604 c
= XWINDOW (child
);
2605 child_size
= width_p
? XINT (c
->total_cols
) : XINT (c
->total_lines
);
2607 if (! resize_fixed_p
&& window_fixed_size_p (c
, width_p
, 0))
2611 new_sizes
[i
] = child_size
;
2612 if (child_size
> min_size
)
2613 available_resize
+= child_size
- min_size
;
2616 /* We might need to shrink some windows to zero. Find the smallest
2617 windows and set them to 0 until we can fulfil the new size. */
2619 while (shrinkable
> 1 && size
+ available_resize
< total
)
2621 for (i
= 0; i
< nchildren
; ++i
)
2622 if (new_sizes
[i
] > 0 && smallest
> new_sizes
[i
])
2623 smallest
= new_sizes
[i
];
2625 for (i
= 0; i
< nchildren
; ++i
)
2626 if (new_sizes
[i
] == smallest
)
2628 /* Resize this window down to zero. */
2630 if (smallest
> min_size
)
2631 available_resize
-= smallest
- min_size
;
2632 available_resize
+= smallest
;
2634 total_removed
+= smallest
;
2636 /* Out of for, just remove one window at the time and
2637 check again if we have enough space. */
2642 /* Now, calculate the new sizes. Try to shrink each window
2643 proportional to its size. */
2644 for (i
= 0; i
< nchildren
; ++i
)
2646 if (new_sizes
[i
] > min_size
)
2648 int to_shrink
= total_shrink
*new_sizes
[i
]/total
;
2649 if (new_sizes
[i
] - to_shrink
< min_size
)
2650 to_shrink
= new_sizes
[i
] - min_size
;
2651 new_sizes
[i
] -= to_shrink
;
2652 total_removed
+= to_shrink
;
2656 /* Any reminder due to rounding, we just subtract from windows
2657 that are left and still can be shrunk. */
2658 while (total_shrink
> total_removed
)
2660 for (i
= 0; i
< nchildren
; ++i
)
2661 if (new_sizes
[i
] > min_size
)
2666 /* Out of for, just shrink one window at the time and
2667 check again if we have enough space. */
2675 /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set
2676 WINDOW's width. Resize WINDOW's children, if any, so that they
2677 keep their proportionate size relative to WINDOW. Propagate
2678 WINDOW's top or left edge position to children. Delete windows
2679 that become too small unless NODELETE_P is non-zero.
2681 If NODELETE_P is 2, that means we do delete windows that are
2682 too small, even if they were too small before! */
2685 size_window (window
, size
, width_p
, nodelete_p
)
2687 int size
, width_p
, nodelete_p
;
2689 struct window
*w
= XWINDOW (window
);
2691 Lisp_Object child
, *forward
, *sideward
;
2692 int old_size
, min_size
, safe_min_size
;
2694 /* We test nodelete_p != 2 and nodelete_p != 1 below, so it
2695 seems like it's too soon to do this here. ++KFS. */
2696 if (nodelete_p
== 2)
2699 check_min_window_sizes ();
2700 size
= max (0, size
);
2702 /* If the window has been "too small" at one point,
2703 don't delete it for being "too small" in the future.
2704 Preserve it as long as that is at all possible. */
2707 old_size
= WINDOW_TOTAL_COLS (w
);
2708 min_size
= window_min_width
;
2709 /* Ensure that there is room for the scroll bar and fringes!
2710 We may reduce display margins though. */
2711 safe_min_size
= (MIN_SAFE_WINDOW_WIDTH
2712 + WINDOW_FRINGE_COLS (w
)
2713 + WINDOW_SCROLL_BAR_COLS (w
));
2717 old_size
= XINT (w
->total_lines
);
2718 min_size
= window_min_height
;
2719 safe_min_size
= MIN_SAFE_WINDOW_HEIGHT
;
2722 if (old_size
< min_size
&& nodelete_p
!= 2)
2723 w
->too_small_ok
= Qt
;
2725 /* Maybe delete WINDOW if it's too small. */
2726 if (nodelete_p
!= 1 && !NILP (w
->parent
))
2728 if (!MINI_WINDOW_P (w
) && !NILP (w
->too_small_ok
))
2729 min_size
= width_p
? MIN_SAFE_WINDOW_WIDTH
: MIN_SAFE_WINDOW_HEIGHT
;
2730 if (min_size
< safe_min_size
)
2731 min_size
= safe_min_size
;
2732 if (size
< min_size
)
2734 delete_window (window
);
2739 /* Set redisplay hints. */
2740 w
->last_modified
= make_number (0);
2741 w
->last_overlay_modified
= make_number (0);
2742 windows_or_buffers_changed
++;
2743 FRAME_WINDOW_SIZES_CHANGED (XFRAME (w
->frame
)) = 1;
2747 sideward
= &w
->vchild
;
2748 forward
= &w
->hchild
;
2749 w
->total_cols
= make_number (size
);
2750 adjust_window_margins (w
);
2754 sideward
= &w
->hchild
;
2755 forward
= &w
->vchild
;
2756 w
->total_lines
= make_number (size
);
2757 w
->orig_total_lines
= Qnil
;
2760 if (!NILP (*sideward
))
2762 for (child
= *sideward
; !NILP (child
); child
= c
->next
)
2764 c
= XWINDOW (child
);
2766 c
->left_col
= w
->left_col
;
2768 c
->top_line
= w
->top_line
;
2769 size_window (child
, size
, width_p
, nodelete_p
);
2772 else if (!NILP (*forward
))
2774 int fixed_size
, each
, extra
, n
;
2775 int resize_fixed_p
, nfixed
;
2776 int last_pos
, first_pos
, nchildren
, total
;
2777 int *new_sizes
= NULL
;
2779 /* Determine the fixed-size portion of the this window, and the
2780 number of child windows. */
2781 fixed_size
= nchildren
= nfixed
= total
= 0;
2782 for (child
= *forward
; !NILP (child
); child
= c
->next
, ++nchildren
)
2786 c
= XWINDOW (child
);
2787 child_size
= width_p
? XINT (c
->total_cols
) : XINT (c
->total_lines
);
2788 total
+= child_size
;
2790 if (window_fixed_size_p (c
, width_p
, 0))
2792 fixed_size
+= child_size
;
2797 /* If the new size is smaller than fixed_size, or if there
2798 aren't any resizable windows, allow resizing fixed-size
2800 resize_fixed_p
= nfixed
== nchildren
|| size
< fixed_size
;
2802 /* Compute how many lines/columns to add/remove to each child. The
2803 value of extra takes care of rounding errors. */
2804 n
= resize_fixed_p
? nchildren
: nchildren
- nfixed
;
2805 if (size
< total
&& n
> 1)
2806 new_sizes
= shrink_windows (total
, size
, nchildren
, n
, min_size
,
2807 resize_fixed_p
, *forward
, width_p
);
2810 each
= (size
- total
) / n
;
2811 extra
= (size
- total
) - n
* each
;
2814 /* Compute new children heights and edge positions. */
2815 first_pos
= width_p
? XINT (w
->left_col
) : XINT (w
->top_line
);
2816 last_pos
= first_pos
;
2817 for (n
= 0, child
= *forward
; !NILP (child
); child
= c
->next
, ++n
)
2819 int new_size
, old_size
;
2821 c
= XWINDOW (child
);
2822 old_size
= width_p
? XFASTINT (c
->total_cols
) : XFASTINT (c
->total_lines
);
2823 new_size
= old_size
;
2825 /* The top or left edge position of this child equals the
2826 bottom or right edge of its predecessor. */
2828 c
->left_col
= make_number (last_pos
);
2830 c
->top_line
= make_number (last_pos
);
2832 /* If this child can be resized, do it. */
2833 if (resize_fixed_p
|| !window_fixed_size_p (c
, width_p
, 0))
2835 new_size
= new_sizes
? new_sizes
[n
] : old_size
+ each
+ extra
;
2839 /* Set new height. Note that size_window also propagates
2840 edge positions to children, so it's not a no-op if we
2841 didn't change the child's size. */
2842 size_window (child
, new_size
, width_p
, 1);
2844 /* Remember the bottom/right edge position of this child; it
2845 will be used to set the top/left edge of the next child. */
2846 last_pos
+= new_size
;
2849 if (new_sizes
) xfree (new_sizes
);
2851 /* We should have covered the parent exactly with child windows. */
2852 xassert (size
== last_pos
- first_pos
);
2854 /* Now delete any children that became too small. */
2856 for (child
= *forward
; !NILP (child
); child
= c
->next
)
2859 c
= XWINDOW (child
);
2860 child_size
= width_p
? XINT (c
->total_cols
) : XINT (c
->total_lines
);
2861 size_window (child
, child_size
, width_p
, 2);
2866 /* Set WINDOW's height to HEIGHT, and recursively change the height of
2867 WINDOW's children. NODELETE non-zero means don't delete windows
2868 that become too small in the process. (The caller should check
2869 later and do so if appropriate.) */
2872 set_window_height (window
, height
, nodelete
)
2877 size_window (window
, height
, 0, nodelete
);
2881 /* Set WINDOW's width to WIDTH, and recursively change the width of
2882 WINDOW's children. NODELETE non-zero means don't delete windows
2883 that become too small in the process. (The caller should check
2884 later and do so if appropriate.) */
2887 set_window_width (window
, width
, nodelete
)
2892 size_window (window
, width
, 1, nodelete
);
2895 /* Change window heights in windows rooted in WINDOW by N lines. */
2898 change_window_heights (window
, n
)
2902 struct window
*w
= XWINDOW (window
);
2904 XSETFASTINT (w
->top_line
, XFASTINT (w
->top_line
) + n
);
2905 XSETFASTINT (w
->total_lines
, XFASTINT (w
->total_lines
) - n
);
2907 if (INTEGERP (w
->orig_top_line
))
2908 XSETFASTINT (w
->orig_top_line
, XFASTINT (w
->orig_top_line
) + n
);
2909 if (INTEGERP (w
->orig_total_lines
))
2910 XSETFASTINT (w
->orig_total_lines
, XFASTINT (w
->orig_total_lines
) - n
);
2912 /* Handle just the top child in a vertical split. */
2913 if (!NILP (w
->vchild
))
2914 change_window_heights (w
->vchild
, n
);
2916 /* Adjust all children in a horizontal split. */
2917 for (window
= w
->hchild
; !NILP (window
); window
= w
->next
)
2919 w
= XWINDOW (window
);
2920 change_window_heights (window
, n
);
2925 int window_select_count
;
2928 Fset_window_buffer_unwind (obuf
)
2935 EXFUN (Fset_window_fringes
, 4);
2936 EXFUN (Fset_window_scroll_bars
, 4);
2938 /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero
2939 means it's allowed to run hooks. See make_frame for a case where
2940 it's not allowed. KEEP_MARGINS_P non-zero means that the current
2941 margins, fringes, and scroll-bar settings of the window are not
2942 reset from the buffer's local settings. */
2945 set_window_buffer (window
, buffer
, run_hooks_p
, keep_margins_p
)
2946 Lisp_Object window
, buffer
;
2947 int run_hooks_p
, keep_margins_p
;
2949 struct window
*w
= XWINDOW (window
);
2950 struct buffer
*b
= XBUFFER (buffer
);
2951 int count
= SPECPDL_INDEX ();
2955 if (EQ (window
, selected_window
))
2956 b
->last_selected_window
= window
;
2958 /* Update time stamps of buffer display. */
2959 if (INTEGERP (b
->display_count
))
2960 XSETINT (b
->display_count
, XINT (b
->display_count
) + 1);
2961 b
->display_time
= Fcurrent_time ();
2963 XSETFASTINT (w
->window_end_pos
, 0);
2964 XSETFASTINT (w
->window_end_vpos
, 0);
2965 bzero (&w
->last_cursor
, sizeof w
->last_cursor
);
2966 w
->window_end_valid
= Qnil
;
2967 w
->hscroll
= w
->min_hscroll
= make_number (0);
2969 set_marker_both (w
->pointm
, buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
2970 set_marker_restricted (w
->start
,
2971 make_number (b
->last_window_start
),
2973 w
->start_at_line_beg
= Qnil
;
2974 w
->force_start
= Qnil
;
2975 XSETFASTINT (w
->last_modified
, 0);
2976 XSETFASTINT (w
->last_overlay_modified
, 0);
2977 windows_or_buffers_changed
++;
2979 /* We must select BUFFER for running the window-scroll-functions.
2980 If WINDOW is selected, switch permanently.
2981 Otherwise, switch but go back to the ambient buffer afterward. */
2982 if (EQ (window
, selected_window
))
2983 Fset_buffer (buffer
);
2984 /* We can't check ! NILP (Vwindow_scroll_functions) here
2985 because that might itself be a local variable. */
2986 else if (window_initialized
)
2988 record_unwind_protect (Fset_window_buffer_unwind
, Fcurrent_buffer ());
2989 Fset_buffer (buffer
);
2992 if (!keep_margins_p
)
2994 /* Set left and right marginal area width etc. from buffer. */
2996 /* This may call adjust_window_margins three times, so
2997 temporarily disable window margins. */
2998 Lisp_Object save_left
= w
->left_margin_cols
;
2999 Lisp_Object save_right
= w
->right_margin_cols
;
3001 w
->left_margin_cols
= w
->right_margin_cols
= Qnil
;
3003 Fset_window_fringes (window
,
3004 b
->left_fringe_width
, b
->right_fringe_width
,
3005 b
->fringes_outside_margins
);
3007 Fset_window_scroll_bars (window
,
3008 b
->scroll_bar_width
,
3009 b
->vertical_scroll_bar_type
, Qnil
);
3011 w
->left_margin_cols
= save_left
;
3012 w
->right_margin_cols
= save_right
;
3014 Fset_window_margins (window
,
3015 b
->left_margin_cols
, b
->right_margin_cols
);
3020 if (! NILP (Vwindow_scroll_functions
))
3021 run_hook_with_args_2 (Qwindow_scroll_functions
, window
,
3022 Fmarker_position (w
->start
));
3024 if (! NILP (Vwindow_configuration_change_hook
)
3025 && ! NILP (Vrun_hooks
))
3026 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
3029 unbind_to (count
, Qnil
);
3033 DEFUN ("set-window-buffer", Fset_window_buffer
, Sset_window_buffer
, 2, 3, 0,
3034 doc
: /* Make WINDOW display BUFFER as its contents.
3035 BUFFER can be a buffer or buffer name.
3036 Optional third arg KEEP_MARGINS non-nil means that WINDOW's current
3037 display margins, fringe widths, and scroll bar settings are maintained;
3038 the default is to reset these from BUFFER's local settings or the frame
3040 (window
, buffer
, keep_margins
)
3041 register Lisp_Object window
, buffer
, keep_margins
;
3043 register Lisp_Object tem
;
3044 register struct window
*w
= decode_window (window
);
3046 XSETWINDOW (window
, w
);
3047 buffer
= Fget_buffer (buffer
);
3048 CHECK_BUFFER (buffer
);
3050 if (NILP (XBUFFER (buffer
)->name
))
3051 error ("Attempt to display deleted buffer");
3055 error ("Window is deleted");
3056 else if (! EQ (tem
, Qt
)) /* w->buffer is t when the window
3057 is first being set up. */
3059 if (!NILP (w
->dedicated
) && !EQ (tem
, buffer
))
3060 error ("Window is dedicated to `%s'",
3061 SDATA (XBUFFER (tem
)->name
));
3066 set_window_buffer (window
, buffer
, 1, !NILP (keep_margins
));
3070 /* Note that selected_window can be nil
3071 when this is called from Fset_window_configuration. */
3073 DEFUN ("select-window", Fselect_window
, Sselect_window
, 1, 2, 0,
3074 doc
: /* Select WINDOW. Most editing will apply to WINDOW's buffer.
3075 If WINDOW is not already selected, also make WINDOW's buffer current.
3076 Also make WINDOW the frame's selected window.
3077 Optional second arg NORECORD non-nil means
3078 do not put this buffer at the front of the list of recently selected ones.
3080 Note that the main editor command loop
3081 selects the buffer of the selected window before each command. */)
3083 register Lisp_Object window
, norecord
;
3085 register struct window
*w
;
3086 register struct window
*ow
;
3089 CHECK_LIVE_WINDOW (window
);
3091 w
= XWINDOW (window
);
3092 w
->frozen_window_start_p
= 0;
3094 XSETFASTINT (w
->use_time
, ++window_select_count
);
3095 if (EQ (window
, selected_window
))
3098 if (!NILP (selected_window
))
3100 ow
= XWINDOW (selected_window
);
3101 if (! NILP (ow
->buffer
))
3102 set_marker_both (ow
->pointm
, ow
->buffer
,
3103 BUF_PT (XBUFFER (ow
->buffer
)),
3104 BUF_PT_BYTE (XBUFFER (ow
->buffer
)));
3107 selected_window
= window
;
3108 sf
= SELECTED_FRAME ();
3109 if (XFRAME (WINDOW_FRAME (w
)) != sf
)
3111 XFRAME (WINDOW_FRAME (w
))->selected_window
= window
;
3112 /* Use this rather than Fhandle_switch_frame
3113 so that FRAME_FOCUS_FRAME is moved appropriately as we
3114 move around in the state where a minibuffer in a separate
3116 Fselect_frame (WINDOW_FRAME (w
), Qnil
);
3119 sf
->selected_window
= window
;
3121 if (NILP (norecord
))
3122 record_buffer (w
->buffer
);
3123 Fset_buffer (w
->buffer
);
3125 XBUFFER (w
->buffer
)->last_selected_window
= window
;
3127 /* Go to the point recorded in the window.
3128 This is important when the buffer is in more
3129 than one window. It also matters when
3130 redisplay_window has altered point after scrolling,
3131 because it makes the change only in the window. */
3133 register int new_point
= marker_position (w
->pointm
);
3134 if (new_point
< BEGV
)
3136 else if (new_point
> ZV
)
3142 windows_or_buffers_changed
++;
3147 select_window_norecord (window
)
3150 return Fselect_window (window
, Qt
);
3153 /* Deiconify the frame containing the window WINDOW,
3154 unless it is the selected frame;
3157 The reason for the exception for the selected frame
3158 is that it seems better not to change the selected frames visibility
3159 merely because of displaying a different buffer in it.
3160 The deiconification is useful when a buffer gets shown in
3161 another frame that you were not using lately. */
3164 display_buffer_1 (window
)
3167 Lisp_Object frame
= XWINDOW (window
)->frame
;
3168 FRAME_PTR f
= XFRAME (frame
);
3170 FRAME_SAMPLE_VISIBILITY (f
);
3172 if (EQ (frame
, selected_frame
))
3173 ; /* Assume the selected frame is already visible enough. */
3174 else if (minibuf_level
> 0
3175 && MINI_WINDOW_P (XWINDOW (selected_window
))
3176 && WINDOW_LIVE_P (minibuf_selected_window
)
3177 && EQ (frame
, WINDOW_FRAME (XWINDOW (minibuf_selected_window
))))
3178 ; /* Assume the frame from which we invoked the minibuffer is visible. */
3181 if (FRAME_ICONIFIED_P (f
))
3182 Fmake_frame_visible (frame
);
3183 else if (FRAME_VISIBLE_P (f
))
3184 Fraise_frame (frame
);
3190 DEFUN ("special-display-p", Fspecial_display_p
, Sspecial_display_p
, 1, 1, 0,
3191 doc
: /* Returns non-nil if a buffer named BUFFER-NAME would be created specially.
3192 The value is actually t if the frame should be called with default frame
3193 parameters, and a list of frame parameters if they were specified.
3194 See `special-display-buffer-names', and `special-display-regexps'. */)
3196 Lisp_Object buffer_name
;
3200 CHECK_STRING (buffer_name
);
3202 tem
= Fmember (buffer_name
, Vspecial_display_buffer_names
);
3206 tem
= Fassoc (buffer_name
, Vspecial_display_buffer_names
);
3210 for (tem
= Vspecial_display_regexps
; CONSP (tem
); tem
= XCDR (tem
))
3212 Lisp_Object car
= XCAR (tem
);
3214 && fast_string_match (car
, buffer_name
) >= 0)
3216 else if (CONSP (car
)
3217 && STRINGP (XCAR (car
))
3218 && fast_string_match (XCAR (car
), buffer_name
) >= 0)
3224 DEFUN ("same-window-p", Fsame_window_p
, Ssame_window_p
, 1, 1, 0,
3225 doc
: /* Returns non-nil if a new buffer named BUFFER-NAME would use the same window.
3226 See `same-window-buffer-names' and `same-window-regexps'. */)
3228 Lisp_Object buffer_name
;
3232 CHECK_STRING (buffer_name
);
3234 tem
= Fmember (buffer_name
, Vsame_window_buffer_names
);
3238 tem
= Fassoc (buffer_name
, Vsame_window_buffer_names
);
3242 for (tem
= Vsame_window_regexps
; CONSP (tem
); tem
= XCDR (tem
))
3244 Lisp_Object car
= XCAR (tem
);
3246 && fast_string_match (car
, buffer_name
) >= 0)
3248 else if (CONSP (car
)
3249 && STRINGP (XCAR (car
))
3250 && fast_string_match (XCAR (car
), buffer_name
) >= 0)
3256 /* Use B so the default is (other-buffer). */
3257 DEFUN ("display-buffer", Fdisplay_buffer
, Sdisplay_buffer
, 1, 3,
3258 "BDisplay buffer: \nP",
3259 doc
: /* Make BUFFER appear in some window but don't select it.
3260 BUFFER can be a buffer or a buffer name.
3261 If BUFFER is shown already in some window, just use that one,
3262 unless the window is the selected window and the optional second
3263 argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg).
3264 If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER.
3265 Returns the window displaying BUFFER.
3266 If `display-buffer-reuse-frames' is non-nil, and another frame is currently
3267 displaying BUFFER, then simply raise that frame.
3269 The variables `special-display-buffer-names', `special-display-regexps',
3270 `same-window-buffer-names', and `same-window-regexps' customize how certain
3271 buffer names are handled.
3273 If optional argument FRAME is `visible', search all visible frames.
3274 If FRAME is 0, search all visible and iconified frames.
3275 If FRAME is t, search all frames.
3276 If FRAME is a frame, search only that frame.
3277 If FRAME is nil, search only the selected frame
3278 (actually the last nonminibuffer frame),
3279 unless `pop-up-frames' or `display-buffer-reuse-frames' is non-nil,
3280 which means search visible and iconified frames.
3282 If `even-window-heights' is non-nil, window heights will be evened out
3283 if displaying the buffer causes two vertically adjacent windows to be
3285 (buffer
, not_this_window
, frame
)
3286 register Lisp_Object buffer
, not_this_window
, frame
;
3288 register Lisp_Object window
, tem
, swp
;
3292 buffer
= Fget_buffer (buffer
);
3293 CHECK_BUFFER (buffer
);
3295 if (!NILP (Vdisplay_buffer_function
))
3296 return call2 (Vdisplay_buffer_function
, buffer
, not_this_window
);
3298 if (NILP (not_this_window
)
3299 && XBUFFER (XWINDOW (selected_window
)->buffer
) == XBUFFER (buffer
))
3300 return display_buffer_1 (selected_window
);
3302 /* See if the user has specified this buffer should appear
3303 in the selected window. */
3304 if (NILP (not_this_window
))
3306 swp
= Fsame_window_p (XBUFFER (buffer
)->name
);
3307 if (!NILP (swp
) && !no_switch_window (selected_window
))
3309 Fswitch_to_buffer (buffer
, Qnil
);
3310 return display_buffer_1 (selected_window
);
3314 /* If the user wants pop-up-frames or display-buffer-reuse-frames,
3315 look for a window showing BUFFER on any visible or iconified frame.
3316 Otherwise search only the current frame. */
3319 else if (pop_up_frames
3320 || display_buffer_reuse_frames
3321 || last_nonminibuf_frame
== 0)
3322 XSETFASTINT (tem
, 0);
3324 XSETFRAME (tem
, last_nonminibuf_frame
);
3326 window
= Fget_buffer_window (buffer
, tem
);
3328 && (NILP (not_this_window
) || !EQ (window
, selected_window
)))
3329 return display_buffer_1 (window
);
3331 /* Certain buffer names get special handling. */
3332 if (!NILP (Vspecial_display_function
) && NILP (swp
))
3334 tem
= Fspecial_display_p (XBUFFER (buffer
)->name
);
3336 return call1 (Vspecial_display_function
, buffer
);
3338 return call2 (Vspecial_display_function
, buffer
, tem
);
3341 /* If there are no frames open that have more than a minibuffer,
3342 we need to create a new frame. */
3343 if (pop_up_frames
|| last_nonminibuf_frame
== 0)
3345 window
= Fframe_selected_window (call0 (Vpop_up_frame_function
));
3346 Fset_window_buffer (window
, buffer
, Qnil
);
3347 return display_buffer_1 (window
);
3350 f
= SELECTED_FRAME ();
3352 || FRAME_MINIBUF_ONLY_P (f
)
3353 /* If the current frame is a special display frame,
3354 don't try to reuse its windows. */
3355 || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f
))->dedicated
))
3360 if (FRAME_MINIBUF_ONLY_P (f
))
3361 XSETFRAME (frames
, last_nonminibuf_frame
);
3362 /* Don't try to create a window if we would get an error. */
3363 if (split_height_threshold
< window_min_height
<< 1)
3364 split_height_threshold
= window_min_height
<< 1;
3366 /* Note that both Fget_largest_window and Fget_lru_window
3367 ignore minibuffers and dedicated windows.
3368 This means they can return nil. */
3370 /* If the frame we would try to split cannot be split,
3371 try other frames. */
3372 if (FRAME_NO_SPLIT_P (NILP (frames
) ? f
: last_nonminibuf_frame
))
3374 /* Try visible frames first. */
3375 window
= Fget_largest_window (Qvisible
);
3376 /* If that didn't work, try iconified frames. */
3378 window
= Fget_largest_window (make_number (0));
3380 window
= Fget_largest_window (Qt
);
3383 window
= Fget_largest_window (frames
);
3385 /* If we got a tall enough full-width window that can be split,
3388 && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window
)->frame
))
3389 && window_height (window
) >= split_height_threshold
3390 && WINDOW_FULL_WIDTH_P (XWINDOW (window
)))
3391 window
= Fsplit_window (window
, Qnil
, Qnil
);
3394 Lisp_Object upper
, lower
, other
;
3396 window
= Fget_lru_window (frames
);
3397 /* If the LRU window is selected, and big enough,
3398 and can be split, split it. */
3400 && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window
)->frame
))
3401 && (EQ (window
, selected_window
)
3402 || EQ (XWINDOW (window
)->parent
, Qnil
))
3403 && window_height (window
) >= window_min_height
<< 1)
3404 window
= Fsplit_window (window
, Qnil
, Qnil
);
3405 /* If Fget_lru_window returned nil, try other approaches. */
3407 /* Try visible frames first. */
3409 window
= Fget_buffer_window (buffer
, Qvisible
);
3411 window
= Fget_largest_window (Qvisible
);
3412 /* If that didn't work, try iconified frames. */
3414 window
= Fget_buffer_window (buffer
, make_number (0));
3416 window
= Fget_largest_window (make_number (0));
3417 /* Try invisible frames. */
3419 window
= Fget_buffer_window (buffer
, Qt
);
3421 window
= Fget_largest_window (Qt
);
3422 /* As a last resort, make a new frame. */
3424 window
= Fframe_selected_window (call0 (Vpop_up_frame_function
));
3425 /* If window appears above or below another,
3426 even out their heights. */
3427 other
= upper
= lower
= Qnil
;
3428 if (!NILP (XWINDOW (window
)->prev
))
3429 other
= upper
= XWINDOW (window
)->prev
, lower
= window
;
3430 if (!NILP (XWINDOW (window
)->next
))
3431 other
= lower
= XWINDOW (window
)->next
, upper
= window
;
3433 && !NILP (Veven_window_heights
)
3434 /* Check that OTHER and WINDOW are vertically arrayed. */
3435 && !EQ (XWINDOW (other
)->top_line
, XWINDOW (window
)->top_line
)
3436 && (XFASTINT (XWINDOW (other
)->total_lines
)
3437 > XFASTINT (XWINDOW (window
)->total_lines
)))
3439 int total
= (XFASTINT (XWINDOW (other
)->total_lines
)
3440 + XFASTINT (XWINDOW (window
)->total_lines
));
3441 enlarge_window (upper
,
3442 total
/ 2 - XFASTINT (XWINDOW (upper
)->total_lines
),
3448 window
= Fget_lru_window (Qnil
);
3450 Fset_window_buffer (window
, buffer
, Qnil
);
3451 return display_buffer_1 (window
);
3455 DEFUN ("force-window-update", Fforce_window_update
, Sforce_window_update
,
3457 doc
: /* Force redisplay of all windows.
3458 If optional arg OBJECT is a window, force redisplay of that window only.
3459 If OBJECT is a buffer or buffer name, force redisplay of all windows
3460 displaying that buffer. */)
3466 windows_or_buffers_changed
++;
3470 if (WINDOWP (object
))
3472 mark_window_display_accurate (object
, 0);
3476 if (STRINGP (object
))
3477 object
= Fget_buffer (object
);
3478 if (BUFFERP (object
) && !NILP (XBUFFER (object
)->name
))
3480 /* Walk all windows looking for buffer, and force update
3481 of each of those windows. */
3483 object
= window_loop (REDISPLAY_BUFFER_WINDOWS
, object
, 0, Qvisible
);
3484 return NILP (object
) ? Qnil
: Qt
;
3487 /* If nothing suitable was found, just return.
3488 We could signal an error, but this feature will typically be used
3489 asynchronously in timers or process sentinels, so we don't. */
3495 temp_output_buffer_show (buf
)
3496 register Lisp_Object buf
;
3498 register struct buffer
*old
= current_buffer
;
3499 register Lisp_Object window
;
3500 register struct window
*w
;
3502 XBUFFER (buf
)->directory
= current_buffer
->directory
;
3505 BUF_SAVE_MODIFF (XBUFFER (buf
)) = MODIFF
;
3509 #if 0 /* rms: there should be no reason for this. */
3510 XBUFFER (buf
)->prevent_redisplay_optimizations_p
= 1;
3512 set_buffer_internal (old
);
3514 if (!EQ (Vtemp_buffer_show_function
, Qnil
))
3515 call1 (Vtemp_buffer_show_function
, buf
);
3518 window
= Fdisplay_buffer (buf
, Qnil
, Qnil
);
3520 if (!EQ (XWINDOW (window
)->frame
, selected_frame
))
3521 Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window
)));
3522 Vminibuf_scroll_window
= window
;
3523 w
= XWINDOW (window
);
3524 XSETFASTINT (w
->hscroll
, 0);
3525 XSETFASTINT (w
->min_hscroll
, 0);
3526 set_marker_restricted_both (w
->start
, buf
, BEG
, BEG
);
3527 set_marker_restricted_both (w
->pointm
, buf
, BEG
, BEG
);
3529 /* Run temp-buffer-show-hook, with the chosen window selected
3530 and its buffer current. */
3532 if (!NILP (Vrun_hooks
)
3533 && !NILP (Fboundp (Qtemp_buffer_show_hook
))
3534 && !NILP (Fsymbol_value (Qtemp_buffer_show_hook
)))
3536 int count
= SPECPDL_INDEX ();
3537 Lisp_Object prev_window
, prev_buffer
;
3538 prev_window
= selected_window
;
3539 XSETBUFFER (prev_buffer
, old
);
3541 /* Select the window that was chosen, for running the hook.
3542 Note: Both Fselect_window and select_window_norecord may
3543 set-buffer to the buffer displayed in the window,
3544 so we need to save the current buffer. --stef */
3545 record_unwind_protect (Fset_buffer
, prev_buffer
);
3546 record_unwind_protect (select_window_norecord
, prev_window
);
3547 Fselect_window (window
, Qt
);
3548 Fset_buffer (w
->buffer
);
3549 call1 (Vrun_hooks
, Qtemp_buffer_show_hook
);
3550 unbind_to (count
, Qnil
);
3556 make_dummy_parent (window
)
3560 register struct window
*o
, *p
;
3563 o
= XWINDOW (window
);
3564 p
= allocate_window ();
3565 for (i
= 0; i
< VECSIZE (struct window
); ++i
)
3566 ((struct Lisp_Vector
*) p
)->contents
[i
]
3567 = ((struct Lisp_Vector
*)o
)->contents
[i
];
3568 XSETWINDOW (new, p
);
3570 XSETFASTINT (p
->sequence_number
, ++sequence_number
);
3572 /* Put new into window structure in place of window */
3573 replace_window (window
, new);
3586 DEFUN ("split-window", Fsplit_window
, Ssplit_window
, 0, 3, "",
3587 doc
: /* Split WINDOW, putting SIZE lines in the first of the pair.
3588 WINDOW defaults to selected one and SIZE to half its size.
3589 If optional third arg HORFLAG is non-nil, split side by side
3590 and put SIZE columns in the first of the pair. In that case,
3591 SIZE includes that window's scroll bar, or the divider column to its right. */)
3592 (window
, size
, horflag
)
3593 Lisp_Object window
, size
, horflag
;
3595 register Lisp_Object
new;
3596 register struct window
*o
, *p
;
3598 register int size_int
;
3601 window
= selected_window
;
3603 CHECK_LIVE_WINDOW (window
);
3605 o
= XWINDOW (window
);
3606 fo
= XFRAME (WINDOW_FRAME (o
));
3610 if (!NILP (horflag
))
3611 /* Calculate the size of the left-hand window, by dividing
3612 the usable space in columns by two.
3613 We round up, since the left-hand window may include
3614 a dividing line, while the right-hand may not. */
3615 size_int
= (XFASTINT (o
->total_cols
) + 1) >> 1;
3617 size_int
= XFASTINT (o
->total_lines
) >> 1;
3621 CHECK_NUMBER (size
);
3622 size_int
= XINT (size
);
3625 if (MINI_WINDOW_P (o
))
3626 error ("Attempt to split minibuffer window");
3627 else if (window_fixed_size_p (o
, !NILP (horflag
), 0))
3628 error ("Attempt to split fixed-size window");
3630 check_min_window_sizes ();
3634 if (size_int
< window_min_height
)
3635 error ("Window height %d too small (after splitting)", size_int
);
3636 if (size_int
+ window_min_height
> XFASTINT (o
->total_lines
))
3637 error ("Window height %d too small (after splitting)",
3638 XFASTINT (o
->total_lines
) - size_int
);
3639 if (NILP (o
->parent
)
3640 || NILP (XWINDOW (o
->parent
)->vchild
))
3642 make_dummy_parent (window
);
3644 XWINDOW (new)->vchild
= window
;
3649 if (size_int
< window_min_width
)
3650 error ("Window width %d too small (after splitting)", size_int
);
3652 if (size_int
+ window_min_width
> XFASTINT (o
->total_cols
))
3653 error ("Window width %d too small (after splitting)",
3654 XFASTINT (o
->total_cols
) - size_int
);
3655 if (NILP (o
->parent
)
3656 || NILP (XWINDOW (o
->parent
)->hchild
))
3658 make_dummy_parent (window
);
3660 XWINDOW (new)->hchild
= window
;
3664 /* Now we know that window's parent is a vertical combination
3665 if we are dividing vertically, or a horizontal combination
3666 if we are making side-by-side windows */
3668 windows_or_buffers_changed
++;
3669 FRAME_WINDOW_SIZES_CHANGED (fo
) = 1;
3670 new = make_window ();
3673 p
->frame
= o
->frame
;
3675 if (!NILP (p
->next
))
3676 XWINDOW (p
->next
)->prev
= new;
3679 p
->parent
= o
->parent
;
3681 p
->window_end_valid
= Qnil
;
3682 bzero (&p
->last_cursor
, sizeof p
->last_cursor
);
3684 /* Duplicate special geometry settings. */
3686 p
->left_margin_cols
= o
->left_margin_cols
;
3687 p
->right_margin_cols
= o
->right_margin_cols
;
3688 p
->left_fringe_width
= o
->left_fringe_width
;
3689 p
->right_fringe_width
= o
->right_fringe_width
;
3690 p
->fringes_outside_margins
= o
->fringes_outside_margins
;
3691 p
->scroll_bar_width
= o
->scroll_bar_width
;
3692 p
->vertical_scroll_bar_type
= o
->vertical_scroll_bar_type
;
3694 /* Apportion the available frame space among the two new windows */
3696 if (!NILP (horflag
))
3698 p
->total_lines
= o
->total_lines
;
3699 p
->top_line
= o
->top_line
;
3700 XSETFASTINT (p
->total_cols
, XFASTINT (o
->total_cols
) - size_int
);
3701 XSETFASTINT (o
->total_cols
, size_int
);
3702 XSETFASTINT (p
->left_col
, XFASTINT (o
->left_col
) + size_int
);
3703 adjust_window_margins (p
);
3704 adjust_window_margins (o
);
3708 p
->left_col
= o
->left_col
;
3709 p
->total_cols
= o
->total_cols
;
3710 XSETFASTINT (p
->total_lines
, XFASTINT (o
->total_lines
) - size_int
);
3711 XSETFASTINT (o
->total_lines
, size_int
);
3712 XSETFASTINT (p
->top_line
, XFASTINT (o
->top_line
) + size_int
);
3715 /* Adjust glyph matrices. */
3718 Fset_window_buffer (new, o
->buffer
, Qt
);
3722 DEFUN ("enlarge-window", Fenlarge_window
, Senlarge_window
, 1, 3, "p",
3723 doc
: /* Make current window ARG lines bigger.
3724 From program, optional second arg non-nil means grow sideways ARG columns.
3725 Interactively, if an argument is not given, make the window one line bigger.
3727 Optional third arg PRESERVE-BEFORE, if non-nil, means do not change the size
3728 of the siblings above or to the left of the selected window. Only
3729 siblings to the right or below are changed. */)
3730 (arg
, side
, preserve_before
)
3731 register Lisp_Object arg
, side
, preserve_before
;
3734 enlarge_window (selected_window
, XINT (arg
), !NILP (side
),
3735 !NILP (preserve_before
));
3737 if (! NILP (Vwindow_configuration_change_hook
))
3738 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
3743 DEFUN ("shrink-window", Fshrink_window
, Sshrink_window
, 1, 3, "p",
3744 doc
: /* Make current window ARG lines smaller.
3745 From program, optional second arg non-nil means shrink sideways arg columns.
3746 Interactively, if an argument is not given, make the window one line smaller.
3748 Optional third arg PRESERVE-BEFORE, if non-nil, means do not change the size
3749 of the siblings above or to the left of the selected window. Only
3750 siblings to the right or below are changed. */)
3751 (arg
, side
, preserve_before
)
3752 register Lisp_Object arg
, side
, preserve_before
;
3755 enlarge_window (selected_window
, -XINT (arg
), !NILP (side
),
3756 !NILP (preserve_before
));
3758 if (! NILP (Vwindow_configuration_change_hook
))
3759 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
3765 window_height (window
)
3768 register struct window
*p
= XWINDOW (window
);
3769 return WINDOW_TOTAL_LINES (p
);
3773 window_width (window
)
3776 register struct window
*p
= XWINDOW (window
);
3777 return WINDOW_TOTAL_COLS (p
);
3782 *(widthflag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line))
3784 #define CURSIZE(w) \
3785 *(widthflag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines))
3788 /* Enlarge WINDOW by DELTA. WIDTHFLAG non-zero means
3789 increase its width. Siblings of the selected window are resized to
3790 fulfill the size request. If they become too small in the process,
3791 they will be deleted.
3793 If PRESERVE_BEFORE is nonzero, that means don't alter
3794 the siblings to the left or above WINDOW. */
3797 enlarge_window (window
, delta
, widthflag
, preserve_before
)
3799 int delta
, widthflag
, preserve_before
;
3801 Lisp_Object parent
, next
, prev
;
3805 int (*sizefun
) P_ ((Lisp_Object
))
3806 = widthflag
? window_width
: window_height
;
3807 void (*setsizefun
) P_ ((Lisp_Object
, int, int))
3808 = (widthflag
? set_window_width
: set_window_height
);
3810 /* Check values of window_min_width and window_min_height for
3812 check_min_window_sizes ();
3814 /* Give up if this window cannot be resized. */
3815 if (window_fixed_size_p (XWINDOW (window
), widthflag
, 1))
3816 error ("Window is not resizable");
3818 /* Find the parent of the selected window. */
3821 p
= XWINDOW (window
);
3827 error ("No other window to side of this one");
3832 ? !NILP (XWINDOW (parent
)->hchild
)
3833 : !NILP (XWINDOW (parent
)->vchild
))
3839 sizep
= &CURSIZE (window
);
3842 register int maxdelta
;
3844 /* Compute the maximum size increment this window can have. */
3846 if (preserve_before
)
3850 maxdelta
= (*sizefun
) (parent
) - XINT (*sizep
);
3851 /* Subtract size of siblings before, since we can't take that. */
3852 maxdelta
-= XINT (CURBEG (window
)) - XINT (CURBEG (parent
));
3855 maxdelta
= (!NILP (p
->next
) ? ((*sizefun
) (p
->next
)
3856 - window_min_size (XWINDOW (p
->next
),
3861 maxdelta
= (!NILP (parent
) ? (*sizefun
) (parent
) - XINT (*sizep
)
3862 /* This is a main window followed by a minibuffer. */
3863 : !NILP (p
->next
) ? ((*sizefun
) (p
->next
)
3864 - window_min_size (XWINDOW (p
->next
),
3866 /* This is a minibuffer following a main window. */
3867 : !NILP (p
->prev
) ? ((*sizefun
) (p
->prev
)
3868 - window_min_size (XWINDOW (p
->prev
),
3870 /* This is a frame with only one window, a minibuffer-only
3871 or a minibufferless frame. */
3874 if (delta
> maxdelta
)
3875 /* This case traps trying to make the minibuffer
3876 the full frame, or make the only window aside from the
3877 minibuffer the full frame. */
3881 if (XINT (*sizep
) + delta
< window_min_size (XWINDOW (window
), widthflag
, 0, 0))
3883 delete_window (window
);
3890 /* Find the total we can get from other siblings without deleting them. */
3892 for (next
= p
->next
; ! NILP (next
); next
= XWINDOW (next
)->next
)
3893 maximum
+= (*sizefun
) (next
) - window_min_size (XWINDOW (next
),
3895 if (! preserve_before
)
3896 for (prev
= p
->prev
; ! NILP (prev
); prev
= XWINDOW (prev
)->prev
)
3897 maximum
+= (*sizefun
) (prev
) - window_min_size (XWINDOW (prev
),
3900 /* If we can get it all from them without deleting them, do so. */
3901 if (delta
<= maximum
)
3903 Lisp_Object first_unaffected
;
3904 Lisp_Object first_affected
;
3909 first_affected
= window
;
3910 /* Look at one sibling at a time,
3911 moving away from this window in both directions alternately,
3912 and take as much as we can get without deleting that sibling. */
3914 && (!NILP (next
) || (!preserve_before
&& !NILP (prev
))))
3918 int this_one
= ((*sizefun
) (next
)
3919 - window_min_size (XWINDOW (next
),
3920 widthflag
, 0, &fixed_p
));
3923 if (this_one
> delta
)
3926 (*setsizefun
) (next
, (*sizefun
) (next
) - this_one
, 0);
3927 (*setsizefun
) (window
, XINT (*sizep
) + this_one
, 0);
3932 next
= XWINDOW (next
)->next
;
3938 if (!preserve_before
&& ! NILP (prev
))
3940 int this_one
= ((*sizefun
) (prev
)
3941 - window_min_size (XWINDOW (prev
),
3942 widthflag
, 0, &fixed_p
));
3945 if (this_one
> delta
)
3948 first_affected
= prev
;
3950 (*setsizefun
) (prev
, (*sizefun
) (prev
) - this_one
, 0);
3951 (*setsizefun
) (window
, XINT (*sizep
) + this_one
, 0);
3956 prev
= XWINDOW (prev
)->prev
;
3960 xassert (delta
== 0);
3962 /* Now recalculate the edge positions of all the windows affected,
3963 based on the new sizes. */
3964 first_unaffected
= next
;
3965 prev
= first_affected
;
3966 for (next
= XWINDOW (prev
)->next
; ! EQ (next
, first_unaffected
);
3967 prev
= next
, next
= XWINDOW (next
)->next
)
3969 XSETINT (CURBEG (next
), XINT (CURBEG (prev
)) + (*sizefun
) (prev
));
3970 /* This does not change size of NEXT,
3971 but it propagates the new top edge to its children */
3972 (*setsizefun
) (next
, (*sizefun
) (next
), 0);
3977 register int delta1
;
3978 register int opht
= (*sizefun
) (parent
);
3980 if (opht
<= XINT (*sizep
) + delta
)
3982 /* If trying to grow this window to or beyond size of the parent,
3983 just delete all the sibling windows. */
3984 Lisp_Object start
, tem
, next
;
3986 start
= XWINDOW (parent
)->vchild
;
3988 start
= XWINDOW (parent
)->hchild
;
3990 /* Delete any siblings that come after WINDOW. */
3991 tem
= XWINDOW (window
)->next
;
3992 while (! NILP (tem
))
3994 next
= XWINDOW (tem
)->next
;
3995 delete_window (tem
);
3999 /* Delete any siblings that come after WINDOW.
4000 Note that if START is not WINDOW, then WINDOW still
4001 Fhas siblings, so WINDOW has not yet replaced its parent. */
4003 while (! EQ (tem
, window
))
4005 next
= XWINDOW (tem
)->next
;
4006 delete_window (tem
);
4012 /* Otherwise, make delta1 just right so that if we add
4013 delta1 lines to this window and to the parent, and then
4014 shrink the parent back to its original size, the new
4015 proportional size of this window will increase by delta.
4017 The function size_window will compute the new height h'
4018 of the window from delta1 as:
4021 x = delta1 - delta1/n * n for the 1st resizable child
4024 where n is the number of children that can be resized.
4025 We can ignore x by choosing a delta1 that is a multiple of
4026 n. We want the height of this window to come out as
4036 The number of children n equals the number of resizable
4037 children of this window + 1 because we know window itself
4038 is resizable (otherwise we would have signalled an error. */
4040 struct window
*w
= XWINDOW (window
);
4044 for (s
= w
->next
; !NILP (s
); s
= XWINDOW (s
)->next
)
4045 if (!window_fixed_size_p (XWINDOW (s
), widthflag
, 0))
4047 for (s
= w
->prev
; !NILP (s
); s
= XWINDOW (s
)->prev
)
4048 if (!window_fixed_size_p (XWINDOW (s
), widthflag
, 0))
4053 /* Add delta1 lines or columns to this window, and to the parent,
4054 keeping things consistent while not affecting siblings. */
4055 XSETINT (CURSIZE (parent
), opht
+ delta1
);
4056 (*setsizefun
) (window
, XINT (*sizep
) + delta1
, 0);
4058 /* Squeeze out delta1 lines or columns from our parent,
4059 shriking this window and siblings proportionately.
4060 This brings parent back to correct size.
4061 Delta1 was calculated so this makes this window the desired size,
4062 taking it all out of the siblings. */
4063 (*setsizefun
) (parent
, opht
, 0);
4068 XSETFASTINT (p
->last_modified
, 0);
4069 XSETFASTINT (p
->last_overlay_modified
, 0);
4071 /* Adjust glyph matrices. */
4072 adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window
))));
4080 /***********************************************************************
4081 Resizing Mini-Windows
4082 ***********************************************************************/
4084 static void shrink_window_lowest_first
P_ ((struct window
*, int));
4086 enum save_restore_action
4093 static int save_restore_orig_size
P_ ((struct window
*,
4094 enum save_restore_action
));
4096 /* Shrink windows rooted in window W to HEIGHT. Take the space needed
4097 from lowest windows first. */
4100 shrink_window_lowest_first (w
, height
)
4108 xassert (!MINI_WINDOW_P (w
));
4110 /* Set redisplay hints. */
4111 XSETFASTINT (w
->last_modified
, 0);
4112 XSETFASTINT (w
->last_overlay_modified
, 0);
4113 windows_or_buffers_changed
++;
4114 FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w
))) = 1;
4116 old_height
= XFASTINT (w
->total_lines
);
4117 XSETFASTINT (w
->total_lines
, height
);
4119 if (!NILP (w
->hchild
))
4121 for (child
= w
->hchild
; !NILP (child
); child
= c
->next
)
4123 c
= XWINDOW (child
);
4124 c
->top_line
= w
->top_line
;
4125 shrink_window_lowest_first (c
, height
);
4128 else if (!NILP (w
->vchild
))
4130 Lisp_Object last_child
;
4131 int delta
= old_height
- height
;
4136 /* Find the last child. We are taking space from lowest windows
4137 first, so we iterate over children from the last child
4139 for (child
= w
->vchild
; !NILP (child
); child
= XWINDOW (child
)->next
)
4142 /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */
4143 for (child
= last_child
; delta
&& !NILP (child
); child
= c
->prev
)
4147 c
= XWINDOW (child
);
4148 this_one
= XFASTINT (c
->total_lines
) - MIN_SAFE_WINDOW_HEIGHT
;
4150 if (this_one
> delta
)
4153 shrink_window_lowest_first (c
, XFASTINT (c
->total_lines
) - this_one
);
4157 /* Compute new positions. */
4158 last_top
= XINT (w
->top_line
);
4159 for (child
= w
->vchild
; !NILP (child
); child
= c
->next
)
4161 c
= XWINDOW (child
);
4162 c
->top_line
= make_number (last_top
);
4163 shrink_window_lowest_first (c
, XFASTINT (c
->total_lines
));
4164 last_top
+= XFASTINT (c
->total_lines
);
4170 /* Save, restore, or check positions and sizes in the window tree
4171 rooted at W. ACTION says what to do.
4173 If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and
4174 orig_total_lines members are valid for all windows in the window
4175 tree. Value is non-zero if they are valid.
4177 If ACTION is SAVE_ORIG_SIZES, save members top and height in
4178 orig_top_line and orig_total_lines for all windows in the tree.
4180 If ACTION is RESTORE_ORIG_SIZES, restore top and height from values
4181 stored in orig_top_line and orig_total_lines for all windows. */
4184 save_restore_orig_size (w
, action
)
4186 enum save_restore_action action
;
4192 if (!NILP (w
->hchild
))
4194 if (!save_restore_orig_size (XWINDOW (w
->hchild
), action
))
4197 else if (!NILP (w
->vchild
))
4199 if (!save_restore_orig_size (XWINDOW (w
->vchild
), action
))
4205 case CHECK_ORIG_SIZES
:
4206 if (!INTEGERP (w
->orig_top_line
) || !INTEGERP (w
->orig_total_lines
))
4210 case SAVE_ORIG_SIZES
:
4211 w
->orig_top_line
= w
->top_line
;
4212 w
->orig_total_lines
= w
->total_lines
;
4213 XSETFASTINT (w
->last_modified
, 0);
4214 XSETFASTINT (w
->last_overlay_modified
, 0);
4217 case RESTORE_ORIG_SIZES
:
4218 xassert (INTEGERP (w
->orig_top_line
) && INTEGERP (w
->orig_total_lines
));
4219 w
->top_line
= w
->orig_top_line
;
4220 w
->total_lines
= w
->orig_total_lines
;
4221 w
->orig_total_lines
= w
->orig_top_line
= Qnil
;
4222 XSETFASTINT (w
->last_modified
, 0);
4223 XSETFASTINT (w
->last_overlay_modified
, 0);
4230 w
= NILP (w
->next
) ? NULL
: XWINDOW (w
->next
);
4237 /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can
4238 without deleting other windows. */
4241 grow_mini_window (w
, delta
)
4245 struct frame
*f
= XFRAME (w
->frame
);
4246 struct window
*root
;
4248 xassert (MINI_WINDOW_P (w
));
4249 xassert (delta
>= 0);
4251 /* Check values of window_min_width and window_min_height for
4253 check_min_window_sizes ();
4255 /* Compute how much we can enlarge the mini-window without deleting
4257 root
= XWINDOW (FRAME_ROOT_WINDOW (f
));
4260 int min_height
= window_min_size (root
, 0, 0, 0);
4261 if (XFASTINT (root
->total_lines
) - delta
< min_height
)
4262 /* Note that the root window may already be smaller than
4264 delta
= max (0, XFASTINT (root
->total_lines
) - min_height
);
4269 /* Save original window sizes and positions, if not already done. */
4270 if (!save_restore_orig_size (root
, CHECK_ORIG_SIZES
))
4271 save_restore_orig_size (root
, SAVE_ORIG_SIZES
);
4273 /* Shrink other windows. */
4274 shrink_window_lowest_first (root
, XFASTINT (root
->total_lines
) - delta
);
4276 /* Grow the mini-window. */
4277 w
->top_line
= make_number (XFASTINT (root
->top_line
) + XFASTINT (root
->total_lines
));
4278 w
->total_lines
= make_number (XFASTINT (w
->total_lines
) + delta
);
4279 XSETFASTINT (w
->last_modified
, 0);
4280 XSETFASTINT (w
->last_overlay_modified
, 0);
4287 /* Shrink mini-window W. If there is recorded info about window sizes
4288 before a call to grow_mini_window, restore recorded window sizes.
4289 Otherwise, if the mini-window is higher than 1 line, resize it to 1
4293 shrink_mini_window (w
)
4296 struct frame
*f
= XFRAME (w
->frame
);
4297 struct window
*root
= XWINDOW (FRAME_ROOT_WINDOW (f
));
4299 if (save_restore_orig_size (root
, CHECK_ORIG_SIZES
))
4301 save_restore_orig_size (root
, RESTORE_ORIG_SIZES
);
4303 FRAME_WINDOW_SIZES_CHANGED (f
) = 1;
4304 windows_or_buffers_changed
= 1;
4306 else if (XFASTINT (w
->total_lines
) > 1)
4308 /* Distribute the additional lines of the mini-window
4309 among the other windows. */
4311 XSETWINDOW (window
, w
);
4312 enlarge_window (window
, 1 - XFASTINT (w
->total_lines
), 0, 0);
4318 /* Mark window cursors off for all windows in the window tree rooted
4319 at W by setting their phys_cursor_on_p flag to zero. Called from
4320 xterm.c, e.g. when a frame is cleared and thereby all cursors on
4321 the frame are cleared. */
4324 mark_window_cursors_off (w
)
4329 if (!NILP (w
->hchild
))
4330 mark_window_cursors_off (XWINDOW (w
->hchild
));
4331 else if (!NILP (w
->vchild
))
4332 mark_window_cursors_off (XWINDOW (w
->vchild
));
4334 w
->phys_cursor_on_p
= 0;
4336 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
4341 /* Return number of lines of text (not counting mode lines) in W. */
4344 window_internal_height (w
)
4347 int ht
= XFASTINT (w
->total_lines
);
4349 if (!MINI_WINDOW_P (w
))
4351 if (!NILP (w
->parent
)
4352 || !NILP (w
->vchild
)
4353 || !NILP (w
->hchild
)
4356 || WINDOW_WANTS_MODELINE_P (w
))
4359 if (WINDOW_WANTS_HEADER_LINE_P (w
))
4367 /* Return the number of columns in W.
4368 Don't count columns occupied by scroll bars or the vertical bar
4369 separating W from the sibling to its right. */
4372 window_box_text_cols (w
)
4375 struct frame
*f
= XFRAME (WINDOW_FRAME (w
));
4376 int width
= XINT (w
->total_cols
);
4378 if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w
))
4379 /* Scroll bars occupy a few columns. */
4380 width
-= WINDOW_CONFIG_SCROLL_BAR_COLS (w
);
4381 else if (!FRAME_WINDOW_P (f
)
4382 && !WINDOW_RIGHTMOST_P (w
) && !WINDOW_FULL_WIDTH_P (w
))
4383 /* The column of `|' characters separating side-by-side windows
4384 occupies one column only. */
4387 if (FRAME_WINDOW_P (f
))
4388 /* On window-systems, fringes and display margins cannot be
4389 used for normal text. */
4390 width
-= (WINDOW_FRINGE_COLS (w
)
4391 + WINDOW_LEFT_MARGIN_COLS (w
)
4392 + WINDOW_RIGHT_MARGIN_COLS (w
));
4398 /************************************************************************
4400 ***********************************************************************/
4402 /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll
4403 N screen-fulls, which is defined as the height of the window minus
4404 next_screen_context_lines. If WHOLE is zero, scroll up N lines
4405 instead. Negative values of N mean scroll down. NOERROR non-zero
4406 means don't signal an error if we try to move over BEGV or ZV,
4410 window_scroll (window
, n
, whole
, noerror
)
4418 /* If we must, use the pixel-based version which is much slower than
4419 the line-based one but can handle varying line heights. */
4420 if (FRAME_WINDOW_P (XFRAME (XWINDOW (window
)->frame
)))
4421 window_scroll_pixel_based (window
, n
, whole
, noerror
);
4423 window_scroll_line_based (window
, n
, whole
, noerror
);
4429 /* Implementation of window_scroll that works based on pixel line
4430 heights. See the comment of window_scroll for parameter
4434 window_scroll_pixel_based (window
, n
, whole
, noerror
)
4441 struct window
*w
= XWINDOW (window
);
4442 struct text_pos start
;
4444 int this_scroll_margin
;
4446 /* True if we fiddled the window vscroll field without really scrolling. */
4449 SET_TEXT_POS_FROM_MARKER (start
, w
->start
);
4451 /* If PT is not visible in WINDOW, move back one half of
4452 the screen. Allow PT to be partially visible, otherwise
4453 something like (scroll-down 1) with PT in the line before
4454 the partially visible one would recenter. */
4455 tem
= Fpos_visible_in_window_p (make_number (PT
), window
, Qt
);
4458 /* Move backward half the height of the window. Performance note:
4459 vmotion used here is about 10% faster, but would give wrong
4460 results for variable height lines. */
4461 init_iterator (&it
, w
, PT
, PT_BYTE
, NULL
, DEFAULT_FACE_ID
);
4462 it
.current_y
= it
.last_visible_y
;
4463 move_it_vertically (&it
, - window_box_height (w
) / 2);
4465 /* The function move_iterator_vertically may move over more than
4466 the specified y-distance. If it->w is small, e.g. a
4467 mini-buffer window, we may end up in front of the window's
4468 display area. This is the case when Start displaying at the
4469 start of the line containing PT in this case. */
4470 if (it
.current_y
<= 0)
4472 init_iterator (&it
, w
, PT
, PT_BYTE
, NULL
, DEFAULT_FACE_ID
);
4473 move_it_vertically (&it
, 0);
4477 start
= it
.current
.pos
;
4480 /* If scroll_preserve_screen_position is non-zero, we try to set
4481 point in the same window line as it is now, so get that line. */
4482 if (!NILP (Vscroll_preserve_screen_position
))
4484 start_display (&it
, w
, start
);
4485 move_it_to (&it
, PT
, -1, -1, -1, MOVE_TO_POS
);
4486 preserve_y
= it
.current_y
;
4491 /* Move iterator it from start the specified distance forward or
4492 backward. The result is the new window start. */
4493 start_display (&it
, w
, start
);
4496 int screen_full
= (window_box_height (w
)
4497 - next_screen_context_lines
* FRAME_LINE_HEIGHT (it
.f
));
4498 int dy
= n
* screen_full
;
4500 /* Note that move_it_vertically always moves the iterator to the
4501 start of a line. So, if the last line doesn't have a newline,
4502 we would end up at the start of the line ending at ZV. */
4504 move_it_vertically_backward (&it
, -dy
);
4506 move_it_to (&it
, ZV
, -1, it
.current_y
+ dy
, -1,
4507 MOVE_TO_POS
| MOVE_TO_Y
);
4510 move_it_by_lines (&it
, n
, 1);
4512 /* We failed if we find ZV is already on the screen (scrolling up,
4513 means there's nothing past the end), or if we can't start any
4514 earlier (scrolling down, means there's nothing past the top). */
4515 if ((n
> 0 && IT_CHARPOS (it
) == ZV
)
4516 || (n
< 0 && IT_CHARPOS (it
) == CHARPOS (start
)))
4518 if (IT_CHARPOS (it
) == ZV
)
4520 if (it
.current_y
< it
.last_visible_y
4521 && (it
.current_y
+ it
.max_ascent
+ it
.max_descent
4522 >= it
.last_visible_y
))
4524 /* The last line was only partially visible, make it fully
4526 w
->vscroll
= (it
.last_visible_y
4527 - it
.current_y
+ it
.max_ascent
+ it
.max_descent
);
4528 adjust_glyphs (it
.f
);
4533 Fsignal (Qend_of_buffer
, Qnil
);
4537 if (w
->vscroll
!= 0)
4538 /* The first line was only partially visible, make it fully
4544 Fsignal (Qbeginning_of_buffer
, Qnil
);
4547 /* If control gets here, then we vscrolled. */
4549 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
4551 /* Don't try to change the window start below. */
4557 int pos
= IT_CHARPOS (it
);
4560 /* If in the middle of a multi-glyph character move forward to
4561 the next character. */
4562 if (in_display_vector_p (&it
))
4565 move_it_to (&it
, pos
, -1, -1, -1, MOVE_TO_POS
);
4568 /* Set the window start, and set up the window for redisplay. */
4569 set_marker_restricted (w
->start
, make_number (pos
),
4571 bytepos
= XMARKER (w
->start
)->bytepos
;
4572 w
->start_at_line_beg
= ((pos
== BEGV
|| FETCH_BYTE (bytepos
- 1) == '\n')
4574 w
->update_mode_line
= Qt
;
4575 XSETFASTINT (w
->last_modified
, 0);
4576 XSETFASTINT (w
->last_overlay_modified
, 0);
4577 /* Set force_start so that redisplay_window will run the
4578 window-scroll-functions. */
4579 w
->force_start
= Qt
;
4582 it
.current_y
= it
.vpos
= 0;
4584 /* Preserve the screen position if we must. */
4585 if (preserve_y
>= 0)
4587 move_it_to (&it
, -1, -1, preserve_y
, -1, MOVE_TO_Y
);
4588 SET_PT_BOTH (IT_CHARPOS (it
), IT_BYTEPOS (it
));
4592 /* Move PT out of scroll margins. */
4593 this_scroll_margin
= max (0, scroll_margin
);
4594 this_scroll_margin
= min (this_scroll_margin
, XFASTINT (w
->total_lines
) / 4);
4595 this_scroll_margin
*= FRAME_LINE_HEIGHT (it
.f
);
4599 /* We moved the window start towards ZV, so PT may be now
4600 in the scroll margin at the top. */
4601 move_it_to (&it
, PT
, -1, -1, -1, MOVE_TO_POS
);
4602 while (it
.current_y
< this_scroll_margin
)
4604 int prev
= it
.current_y
;
4605 move_it_by_lines (&it
, 1, 1);
4606 if (prev
== it
.current_y
)
4609 SET_PT_BOTH (IT_CHARPOS (it
), IT_BYTEPOS (it
));
4613 int charpos
, bytepos
;
4615 /* We moved the window start towards BEGV, so PT may be now
4616 in the scroll margin at the bottom. */
4617 move_it_to (&it
, PT
, -1,
4618 it
.last_visible_y
- this_scroll_margin
- 1, -1,
4619 MOVE_TO_POS
| MOVE_TO_Y
);
4621 /* Save our position, in case it's correct. */
4622 charpos
= IT_CHARPOS (it
);
4623 bytepos
= IT_BYTEPOS (it
);
4625 /* See if point is on a partially visible line at the end. */
4626 move_it_by_lines (&it
, 1, 1);
4627 if (it
.current_y
> it
.last_visible_y
)
4628 /* The last line was only partially visible, so back up two
4629 lines to make sure we're on a fully visible line. */
4631 move_it_by_lines (&it
, -2, 0);
4632 SET_PT_BOTH (IT_CHARPOS (it
), IT_BYTEPOS (it
));
4635 /* No, the position we saved is OK, so use it. */
4636 SET_PT_BOTH (charpos
, bytepos
);
4642 /* Implementation of window_scroll that works based on screen lines.
4643 See the comment of window_scroll for parameter descriptions. */
4646 window_scroll_line_based (window
, n
, whole
, noerror
)
4652 register struct window
*w
= XWINDOW (window
);
4653 register int opoint
= PT
, opoint_byte
= PT_BYTE
;
4654 register int pos
, pos_byte
;
4655 register int ht
= window_internal_height (w
);
4656 register Lisp_Object tem
;
4660 struct position posit
;
4663 /* If scrolling screen-fulls, compute the number of lines to
4664 scroll from the window's height. */
4666 n
*= max (1, ht
- next_screen_context_lines
);
4668 startpos
= marker_position (w
->start
);
4670 posit
= *compute_motion (startpos
, 0, 0, 0,
4672 window_box_text_cols (w
), XINT (w
->hscroll
),
4674 original_vpos
= posit
.vpos
;
4676 XSETFASTINT (tem
, PT
);
4677 tem
= Fpos_visible_in_window_p (tem
, window
, Qnil
);
4681 Fvertical_motion (make_number (- (ht
/ 2)), window
);
4686 lose
= n
< 0 && PT
== BEGV
;
4687 Fvertical_motion (make_number (n
), window
);
4691 SET_PT_BOTH (opoint
, opoint_byte
);
4698 Fsignal (Qbeginning_of_buffer
, Qnil
);
4703 int this_scroll_margin
= scroll_margin
;
4705 /* Don't use a scroll margin that is negative or too large. */
4706 if (this_scroll_margin
< 0)
4707 this_scroll_margin
= 0;
4709 if (XINT (w
->total_lines
) < 4 * scroll_margin
)
4710 this_scroll_margin
= XINT (w
->total_lines
) / 4;
4712 set_marker_restricted_both (w
->start
, w
->buffer
, pos
, pos_byte
);
4713 w
->start_at_line_beg
= bolp
;
4714 w
->update_mode_line
= Qt
;
4715 XSETFASTINT (w
->last_modified
, 0);
4716 XSETFASTINT (w
->last_overlay_modified
, 0);
4717 /* Set force_start so that redisplay_window will run
4718 the window-scroll-functions. */
4719 w
->force_start
= Qt
;
4721 if (whole
&& !NILP (Vscroll_preserve_screen_position
))
4723 SET_PT_BOTH (pos
, pos_byte
);
4724 Fvertical_motion (make_number (original_vpos
), window
);
4726 /* If we scrolled forward, put point enough lines down
4727 that it is outside the scroll margin. */
4732 if (this_scroll_margin
> 0)
4734 SET_PT_BOTH (pos
, pos_byte
);
4735 Fvertical_motion (make_number (this_scroll_margin
), window
);
4741 if (top_margin
<= opoint
)
4742 SET_PT_BOTH (opoint
, opoint_byte
);
4743 else if (!NILP (Vscroll_preserve_screen_position
))
4745 SET_PT_BOTH (pos
, pos_byte
);
4746 Fvertical_motion (make_number (original_vpos
), window
);
4749 SET_PT (top_margin
);
4755 /* If we scrolled backward, put point near the end of the window
4756 but not within the scroll margin. */
4757 SET_PT_BOTH (pos
, pos_byte
);
4758 tem
= Fvertical_motion (make_number (ht
- this_scroll_margin
), window
);
4759 if (XFASTINT (tem
) == ht
- this_scroll_margin
)
4762 bottom_margin
= PT
+ 1;
4764 if (bottom_margin
> opoint
)
4765 SET_PT_BOTH (opoint
, opoint_byte
);
4768 if (!NILP (Vscroll_preserve_screen_position
))
4770 SET_PT_BOTH (pos
, pos_byte
);
4771 Fvertical_motion (make_number (original_vpos
), window
);
4774 Fvertical_motion (make_number (-1), window
);
4783 Fsignal (Qend_of_buffer
, Qnil
);
4788 /* Scroll selected_window up or down. If N is nil, scroll a
4789 screen-full which is defined as the height of the window minus
4790 next_screen_context_lines. If N is the symbol `-', scroll.
4791 DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll
4792 up. This is the guts of Fscroll_up and Fscroll_down. */
4795 scroll_command (n
, direction
)
4799 int count
= SPECPDL_INDEX ();
4801 xassert (abs (direction
) == 1);
4803 /* If selected window's buffer isn't current, make it current for
4804 the moment. But don't screw up if window_scroll gets an error. */
4805 if (XBUFFER (XWINDOW (selected_window
)->buffer
) != current_buffer
)
4807 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
4808 Fset_buffer (XWINDOW (selected_window
)->buffer
);
4810 /* Make redisplay consider other windows than just selected_window. */
4811 ++windows_or_buffers_changed
;
4815 window_scroll (selected_window
, direction
, 1, 0);
4816 else if (EQ (n
, Qminus
))
4817 window_scroll (selected_window
, -direction
, 1, 0);
4820 n
= Fprefix_numeric_value (n
);
4821 window_scroll (selected_window
, XINT (n
) * direction
, 0, 0);
4824 unbind_to (count
, Qnil
);
4827 DEFUN ("scroll-up", Fscroll_up
, Sscroll_up
, 0, 1, "P",
4828 doc
: /* Scroll text of current window upward ARG lines; or near full screen if no ARG.
4829 A near full screen is `next-screen-context-lines' less than a full screen.
4830 Negative ARG means scroll downward.
4831 If ARG is the atom `-', scroll downward by nearly full screen.
4832 When calling from a program, supply as argument a number, nil, or `-'. */)
4836 scroll_command (arg
, 1);
4840 DEFUN ("scroll-down", Fscroll_down
, Sscroll_down
, 0, 1, "P",
4841 doc
: /* Scroll text of current window down ARG lines; or near full screen if no ARG.
4842 A near full screen is `next-screen-context-lines' less than a full screen.
4843 Negative ARG means scroll upward.
4844 If ARG is the atom `-', scroll upward by nearly full screen.
4845 When calling from a program, supply as argument a number, nil, or `-'. */)
4849 scroll_command (arg
, -1);
4853 DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling
, Sother_window_for_scrolling
, 0, 0, 0,
4854 doc
: /* Return the other window for \"other window scroll\" commands.
4855 If in the minibuffer, `minibuffer-scroll-window' if non-nil
4856 specifies the window.
4857 If `other-window-scroll-buffer' is non-nil, a window
4858 showing that buffer is used. */)
4863 if (MINI_WINDOW_P (XWINDOW (selected_window
))
4864 && !NILP (Vminibuf_scroll_window
))
4865 window
= Vminibuf_scroll_window
;
4866 /* If buffer is specified, scroll that buffer. */
4867 else if (!NILP (Vother_window_scroll_buffer
))
4869 window
= Fget_buffer_window (Vother_window_scroll_buffer
, Qnil
);
4871 window
= Fdisplay_buffer (Vother_window_scroll_buffer
, Qt
, Qnil
);
4875 /* Nothing specified; look for a neighboring window on the same
4877 window
= Fnext_window (selected_window
, Qnil
, Qnil
);
4879 if (EQ (window
, selected_window
))
4880 /* That didn't get us anywhere; look for a window on another
4883 window
= Fnext_window (window
, Qnil
, Qt
);
4884 while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window
))))
4885 && ! EQ (window
, selected_window
));
4888 CHECK_LIVE_WINDOW (window
);
4890 if (EQ (window
, selected_window
))
4891 error ("There is no other window");
4896 DEFUN ("scroll-other-window", Fscroll_other_window
, Sscroll_other_window
, 0, 1, "P",
4897 doc
: /* Scroll next window upward ARG lines; or near full screen if no ARG.
4898 A near full screen is `next-screen-context-lines' less than a full screen.
4899 The next window is the one below the current one; or the one at the top
4900 if the current one is at the bottom. Negative ARG means scroll downward.
4901 If ARG is the atom `-', scroll downward by nearly full screen.
4902 When calling from a program, supply as argument a number, nil, or `-'.
4904 If in the minibuffer, `minibuffer-scroll-window' if non-nil
4905 specifies the window to scroll.
4906 If `other-window-scroll-buffer' is non-nil, scroll the window
4907 showing that buffer, popping the buffer up if necessary. */)
4913 int count
= SPECPDL_INDEX ();
4915 window
= Fother_window_for_scrolling ();
4916 w
= XWINDOW (window
);
4918 /* Don't screw up if window_scroll gets an error. */
4919 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
4920 ++windows_or_buffers_changed
;
4922 Fset_buffer (w
->buffer
);
4923 SET_PT (marker_position (w
->pointm
));
4926 window_scroll (window
, 1, 1, 1);
4927 else if (EQ (arg
, Qminus
))
4928 window_scroll (window
, -1, 1, 1);
4934 window_scroll (window
, XINT (arg
), 0, 1);
4937 set_marker_both (w
->pointm
, Qnil
, PT
, PT_BYTE
);
4938 unbind_to (count
, Qnil
);
4943 DEFUN ("scroll-left", Fscroll_left
, Sscroll_left
, 0, 1, "P",
4944 doc
: /* Scroll selected window display ARG columns left.
4945 Default for ARG is window width minus 2.
4946 Value is the total amount of leftward horizontal scrolling in
4947 effect after the change.
4948 If `automatic-hscrolling' is non-nil, the argument ARG modifies
4949 a lower bound for automatic scrolling, i.e. automatic scrolling
4950 will not scroll a window to a column less than the value returned
4951 by this function. */)
4953 register Lisp_Object arg
;
4957 struct window
*w
= XWINDOW (selected_window
);
4960 XSETFASTINT (arg
, window_box_text_cols (w
) - 2);
4962 arg
= Fprefix_numeric_value (arg
);
4964 hscroll
= XINT (w
->hscroll
) + XINT (arg
);
4965 result
= Fset_window_hscroll (selected_window
, make_number (hscroll
));
4967 if (interactive_p (0))
4968 w
->min_hscroll
= w
->hscroll
;
4973 DEFUN ("scroll-right", Fscroll_right
, Sscroll_right
, 0, 1, "P",
4974 doc
: /* Scroll selected window display ARG columns right.
4975 Default for ARG is window width minus 2.
4976 Value is the total amount of leftward horizontal scrolling in
4977 effect after the change.
4978 If `automatic-hscrolling' is non-nil, the argument ARG modifies
4979 a lower bound for automatic scrolling, i.e. automatic scrolling
4980 will not scroll a window to a column less than the value returned
4981 by this function. */)
4983 register Lisp_Object arg
;
4987 struct window
*w
= XWINDOW (selected_window
);
4990 XSETFASTINT (arg
, window_box_text_cols (w
) - 2);
4992 arg
= Fprefix_numeric_value (arg
);
4994 hscroll
= XINT (w
->hscroll
) - XINT (arg
);
4995 result
= Fset_window_hscroll (selected_window
, make_number (hscroll
));
4997 if (interactive_p (0))
4998 w
->min_hscroll
= w
->hscroll
;
5003 DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window
, Sminibuffer_selected_window
, 0, 0, 0,
5004 doc
: /* Return the window which was selected when entering the minibuffer.
5005 Returns nil, if current window is not a minibuffer window. */)
5008 if (minibuf_level
> 0
5009 && MINI_WINDOW_P (XWINDOW (selected_window
))
5010 && WINDOW_LIVE_P (minibuf_selected_window
))
5011 return minibuf_selected_window
;
5016 /* Value is the number of lines actually displayed in window W,
5017 as opposed to its height. */
5020 displayed_window_lines (w
)
5024 struct text_pos start
;
5025 int height
= window_box_height (w
);
5026 struct buffer
*old_buffer
;
5029 if (XBUFFER (w
->buffer
) != current_buffer
)
5031 old_buffer
= current_buffer
;
5032 set_buffer_internal (XBUFFER (w
->buffer
));
5037 /* In case W->start is out of the accessible range, do something
5038 reasonable. This happens in Info mode when Info-scroll-down
5039 calls (recenter -1) while W->start is 1. */
5040 if (XMARKER (w
->start
)->charpos
< BEGV
)
5041 SET_TEXT_POS (start
, BEGV
, BEGV_BYTE
);
5042 else if (XMARKER (w
->start
)->charpos
> ZV
)
5043 SET_TEXT_POS (start
, ZV
, ZV_BYTE
);
5045 SET_TEXT_POS_FROM_MARKER (start
, w
->start
);
5047 start_display (&it
, w
, start
);
5048 move_it_vertically (&it
, height
);
5049 bottom_y
= line_bottom_y (&it
);
5051 /* rms: On a non-window display,
5052 the value of it.vpos at the bottom of the screen
5053 seems to be 1 larger than window_box_height (w).
5054 This kludge fixes a bug whereby (move-to-window-line -1)
5055 when ZV is on the last screen line
5056 moves to the previous screen line instead of the last one. */
5057 if (! FRAME_WINDOW_P (XFRAME (w
->frame
)))
5060 /* Add in empty lines at the bottom of the window. */
5061 if (bottom_y
< height
)
5063 int uy
= FRAME_LINE_HEIGHT (it
.f
);
5064 it
.vpos
+= (height
- bottom_y
+ uy
- 1) / uy
;
5068 set_buffer_internal (old_buffer
);
5074 DEFUN ("recenter", Frecenter
, Srecenter
, 0, 1, "P",
5075 doc
: /* Center point in window and redisplay frame.
5076 With prefix argument ARG, recenter putting point on screen line ARG
5077 relative to the current window. If ARG is negative, it counts up from the
5078 bottom of the window. (ARG should be less than the height of the window.)
5080 If ARG is omitted or nil, erase the entire frame and then
5081 redraw with point in the center of the current window.
5082 Just C-u as prefix means put point in the center of the window
5083 and redisplay normally--don't erase and redraw the frame. */)
5085 register Lisp_Object arg
;
5087 struct window
*w
= XWINDOW (selected_window
);
5088 struct buffer
*buf
= XBUFFER (w
->buffer
);
5089 struct buffer
*obuf
= current_buffer
;
5091 int charpos
, bytepos
;
5093 /* If redisplay is suppressed due to an error, try again. */
5094 obuf
->display_error_modiff
= 0;
5100 /* Invalidate pixel data calculated for all compositions. */
5101 for (i
= 0; i
< n_compositions
; i
++)
5102 composition_table
[i
]->font
= NULL
;
5104 Fredraw_frame (w
->frame
);
5105 SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w
)));
5108 else if (CONSP (arg
)) /* Just C-u. */
5112 arg
= Fprefix_numeric_value (arg
);
5116 set_buffer_internal (buf
);
5118 /* Handle centering on a graphical frame specially. Such frames can
5119 have variable-height lines and centering point on the basis of
5120 line counts would lead to strange effects. */
5121 if (FRAME_WINDOW_P (XFRAME (w
->frame
)))
5128 SET_TEXT_POS (pt
, PT
, PT_BYTE
);
5129 start_display (&it
, w
, pt
);
5130 move_it_vertically (&it
, - window_box_height (w
) / 2);
5131 charpos
= IT_CHARPOS (it
);
5132 bytepos
= IT_BYTEPOS (it
);
5134 else if (XINT (arg
) < 0)
5138 int y0
, y1
, h
, nlines
;
5140 SET_TEXT_POS (pt
, PT
, PT_BYTE
);
5141 start_display (&it
, w
, pt
);
5144 /* The amount of pixels we have to move back is the window
5145 height minus what's displayed in the line containing PT,
5146 and the lines below. */
5147 nlines
= - XINT (arg
) - 1;
5148 move_it_by_lines (&it
, nlines
, 1);
5150 y1
= line_bottom_y (&it
);
5152 /* If we can't move down NLINES lines because we hit
5153 the end of the buffer, count in some empty lines. */
5154 if (it
.vpos
< nlines
)
5155 y1
+= (nlines
- it
.vpos
) * FRAME_LINE_HEIGHT (it
.f
);
5157 h
= window_box_height (w
) - (y1
- y0
);
5159 start_display (&it
, w
, pt
);
5160 move_it_vertically (&it
, - h
);
5161 charpos
= IT_CHARPOS (it
);
5162 bytepos
= IT_BYTEPOS (it
);
5166 struct position pos
;
5167 pos
= *vmotion (PT
, - XINT (arg
), w
);
5168 charpos
= pos
.bufpos
;
5169 bytepos
= pos
.bytepos
;
5174 struct position pos
;
5175 int ht
= window_internal_height (w
);
5178 arg
= make_number (ht
/ 2);
5179 else if (XINT (arg
) < 0)
5180 arg
= make_number (XINT (arg
) + ht
);
5182 pos
= *vmotion (PT
, - XINT (arg
), w
);
5183 charpos
= pos
.bufpos
;
5184 bytepos
= pos
.bytepos
;
5187 /* Set the new window start. */
5188 set_marker_both (w
->start
, w
->buffer
, charpos
, bytepos
);
5189 w
->window_end_valid
= Qnil
;
5191 w
->optional_new_start
= Qt
;
5193 if (bytepos
== BEGV_BYTE
|| FETCH_BYTE (bytepos
- 1) == '\n')
5194 w
->start_at_line_beg
= Qt
;
5196 w
->start_at_line_beg
= Qnil
;
5198 set_buffer_internal (obuf
);
5203 DEFUN ("window-text-height", Fwindow_text_height
, Swindow_text_height
,
5205 doc
: /* Return the height in lines of the text display area of WINDOW.
5206 This doesn't include the mode-line (or header-line if any) or any
5207 partial-height lines in the text display area. */)
5211 struct window
*w
= decode_window (window
);
5212 int pixel_height
= window_box_height (w
);
5213 int line_height
= pixel_height
/ FRAME_LINE_HEIGHT (XFRAME (w
->frame
));
5214 return make_number (line_height
);
5219 DEFUN ("move-to-window-line", Fmove_to_window_line
, Smove_to_window_line
,
5221 doc
: /* Position point relative to window.
5222 With no argument, position point at center of window.
5223 An argument specifies vertical position within the window;
5224 zero means top of window, negative means relative to bottom of window. */)
5228 struct window
*w
= XWINDOW (selected_window
);
5232 window
= selected_window
;
5233 start
= marker_position (w
->start
);
5234 if (start
< BEGV
|| start
> ZV
)
5236 int height
= window_internal_height (w
);
5237 Fvertical_motion (make_number (- (height
/ 2)), window
);
5238 set_marker_both (w
->start
, w
->buffer
, PT
, PT_BYTE
);
5239 w
->start_at_line_beg
= Fbolp ();
5240 w
->force_start
= Qt
;
5243 Fgoto_char (w
->start
);
5245 lines
= displayed_window_lines (w
);
5247 XSETFASTINT (arg
, lines
/ 2);
5250 arg
= Fprefix_numeric_value (arg
);
5252 XSETINT (arg
, XINT (arg
) + lines
);
5255 /* Skip past a partially visible first line. */
5257 XSETINT (arg
, XINT (arg
) + 1);
5259 return Fvertical_motion (arg
, window
);
5264 /***********************************************************************
5265 Window Configuration
5266 ***********************************************************************/
5268 struct save_window_data
5270 EMACS_INT size_from_Lisp_Vector_struct
;
5271 struct Lisp_Vector
*next_from_Lisp_Vector_struct
;
5272 Lisp_Object frame_cols
, frame_lines
, frame_menu_bar_lines
;
5273 Lisp_Object frame_tool_bar_lines
;
5274 Lisp_Object selected_frame
;
5275 Lisp_Object current_window
;
5276 Lisp_Object current_buffer
;
5277 Lisp_Object minibuf_scroll_window
;
5278 Lisp_Object minibuf_selected_window
;
5279 Lisp_Object root_window
;
5280 Lisp_Object focus_frame
;
5281 /* Record the values of window-min-width and window-min-height
5282 so that window sizes remain consistent with them. */
5283 Lisp_Object min_width
, min_height
;
5284 /* A vector, each of whose elements is a struct saved_window
5286 Lisp_Object saved_windows
;
5289 /* This is saved as a Lisp_Vector */
5292 /* these first two must agree with struct Lisp_Vector in lisp.h */
5293 EMACS_INT size_from_Lisp_Vector_struct
;
5294 struct Lisp_Vector
*next_from_Lisp_Vector_struct
;
5297 Lisp_Object buffer
, start
, pointm
, mark
;
5298 Lisp_Object left_col
, top_line
, total_cols
, total_lines
;
5299 Lisp_Object hscroll
, min_hscroll
;
5300 Lisp_Object parent
, prev
;
5301 Lisp_Object start_at_line_beg
;
5302 Lisp_Object display_table
;
5303 Lisp_Object orig_top_line
, orig_total_lines
;
5304 Lisp_Object left_margin_cols
, right_margin_cols
;
5305 Lisp_Object left_fringe_width
, right_fringe_width
, fringes_outside_margins
;
5306 Lisp_Object scroll_bar_width
, vertical_scroll_bar_type
;
5309 #define SAVED_WINDOW_VECTOR_SIZE 24 /* Arg to Fmake_vector */
5311 #define SAVED_WINDOW_N(swv,n) \
5312 ((struct saved_window *) (XVECTOR ((swv)->contents[(n)])))
5314 DEFUN ("window-configuration-p", Fwindow_configuration_p
, Swindow_configuration_p
, 1, 1, 0,
5315 doc
: /* Return t if OBJECT is a window-configuration object. */)
5319 if (WINDOW_CONFIGURATIONP (object
))
5324 DEFUN ("window-configuration-frame", Fwindow_configuration_frame
, Swindow_configuration_frame
, 1, 1, 0,
5325 doc
: /* Return the frame that CONFIG, a window-configuration object, is about. */)
5329 register struct save_window_data
*data
;
5330 struct Lisp_Vector
*saved_windows
;
5332 if (! WINDOW_CONFIGURATIONP (config
))
5333 wrong_type_argument (Qwindow_configuration_p
, config
);
5335 data
= (struct save_window_data
*) XVECTOR (config
);
5336 saved_windows
= XVECTOR (data
->saved_windows
);
5337 return XWINDOW (SAVED_WINDOW_N (saved_windows
, 0)->window
)->frame
;
5340 DEFUN ("set-window-configuration", Fset_window_configuration
,
5341 Sset_window_configuration
, 1, 1, 0,
5342 doc
: /* Set the configuration of windows and buffers as specified by CONFIGURATION.
5343 CONFIGURATION must be a value previously returned
5344 by `current-window-configuration' (which see).
5345 If CONFIGURATION was made from a frame that is now deleted,
5346 only frame-independent values can be restored. In this case,
5347 the return value is nil. Otherwise the value is t. */)
5349 Lisp_Object configuration
;
5351 register struct save_window_data
*data
;
5352 struct Lisp_Vector
*saved_windows
;
5353 Lisp_Object new_current_buffer
;
5358 while (!WINDOW_CONFIGURATIONP (configuration
))
5359 wrong_type_argument (Qwindow_configuration_p
, configuration
);
5361 data
= (struct save_window_data
*) XVECTOR (configuration
);
5362 saved_windows
= XVECTOR (data
->saved_windows
);
5364 new_current_buffer
= data
->current_buffer
;
5365 if (NILP (XBUFFER (new_current_buffer
)->name
))
5366 new_current_buffer
= Qnil
;
5369 if (XBUFFER (new_current_buffer
) == current_buffer
)
5372 old_point
= BUF_PT (XBUFFER (new_current_buffer
));
5375 frame
= XWINDOW (SAVED_WINDOW_N (saved_windows
, 0)->window
)->frame
;
5378 /* If f is a dead frame, don't bother rebuilding its window tree.
5379 However, there is other stuff we should still try to do below. */
5380 if (FRAME_LIVE_P (f
))
5382 register struct window
*w
;
5383 register struct saved_window
*p
;
5384 struct window
*root_window
;
5385 struct window
**leaf_windows
;
5389 /* If the frame has been resized since this window configuration was
5390 made, we change the frame to the size specified in the
5391 configuration, restore the configuration, and then resize it
5392 back. We keep track of the prevailing height in these variables. */
5393 int previous_frame_lines
= FRAME_LINES (f
);
5394 int previous_frame_cols
= FRAME_COLS (f
);
5395 int previous_frame_menu_bar_lines
= FRAME_MENU_BAR_LINES (f
);
5396 int previous_frame_tool_bar_lines
= FRAME_TOOL_BAR_LINES (f
);
5398 /* The mouse highlighting code could get screwed up
5399 if it runs during this. */
5402 if (XFASTINT (data
->frame_lines
) != previous_frame_lines
5403 || XFASTINT (data
->frame_cols
) != previous_frame_cols
)
5404 change_frame_size (f
, XFASTINT (data
->frame_lines
),
5405 XFASTINT (data
->frame_cols
), 0, 0, 0);
5406 #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS)
5407 if (XFASTINT (data
->frame_menu_bar_lines
)
5408 != previous_frame_menu_bar_lines
)
5409 x_set_menu_bar_lines (f
, data
->frame_menu_bar_lines
, make_number (0));
5410 #ifdef HAVE_WINDOW_SYSTEM
5411 if (XFASTINT (data
->frame_tool_bar_lines
)
5412 != previous_frame_tool_bar_lines
)
5413 x_set_tool_bar_lines (f
, data
->frame_tool_bar_lines
, make_number (0));
5417 /* "Swap out" point from the selected window
5418 into its buffer. We do this now, before
5419 restoring the window contents, and prevent it from
5420 being done later on when we select a new window. */
5421 if (! NILP (XWINDOW (selected_window
)->buffer
))
5423 w
= XWINDOW (selected_window
);
5424 set_marker_both (w
->pointm
,
5426 BUF_PT (XBUFFER (w
->buffer
)),
5427 BUF_PT_BYTE (XBUFFER (w
->buffer
)));
5430 windows_or_buffers_changed
++;
5431 FRAME_WINDOW_SIZES_CHANGED (f
) = 1;
5433 /* Problem: Freeing all matrices and later allocating them again
5434 is a serious redisplay flickering problem. What we would
5435 really like to do is to free only those matrices not reused
5437 root_window
= XWINDOW (FRAME_ROOT_WINDOW (f
));
5439 = (struct window
**) alloca (count_windows (root_window
)
5440 * sizeof (struct window
*));
5441 n_leaf_windows
= get_leaf_windows (root_window
, leaf_windows
, 0);
5443 /* Temporarily avoid any problems with windows that are smaller
5444 than they are supposed to be. */
5445 window_min_height
= 1;
5446 window_min_width
= 1;
5449 Mark all windows now on frame as "deleted".
5450 Restoring the new configuration "undeletes" any that are in it.
5452 Save their current buffers in their height fields, since we may
5453 need it later, if a buffer saved in the configuration is now
5455 delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f
)));
5457 for (k
= 0; k
< saved_windows
->size
; k
++)
5459 p
= SAVED_WINDOW_N (saved_windows
, k
);
5460 w
= XWINDOW (p
->window
);
5463 if (!NILP (p
->parent
))
5464 w
->parent
= SAVED_WINDOW_N (saved_windows
,
5465 XFASTINT (p
->parent
))->window
;
5469 if (!NILP (p
->prev
))
5471 w
->prev
= SAVED_WINDOW_N (saved_windows
,
5472 XFASTINT (p
->prev
))->window
;
5473 XWINDOW (w
->prev
)->next
= p
->window
;
5478 if (!NILP (w
->parent
))
5480 if (EQ (p
->total_cols
, XWINDOW (w
->parent
)->total_cols
))
5482 XWINDOW (w
->parent
)->vchild
= p
->window
;
5483 XWINDOW (w
->parent
)->hchild
= Qnil
;
5487 XWINDOW (w
->parent
)->hchild
= p
->window
;
5488 XWINDOW (w
->parent
)->vchild
= Qnil
;
5493 /* If we squirreled away the buffer in the window's height,
5495 if (BUFFERP (w
->total_lines
))
5496 w
->buffer
= w
->total_lines
;
5497 w
->left_col
= p
->left_col
;
5498 w
->top_line
= p
->top_line
;
5499 w
->total_cols
= p
->total_cols
;
5500 w
->total_lines
= p
->total_lines
;
5501 w
->hscroll
= p
->hscroll
;
5502 w
->min_hscroll
= p
->min_hscroll
;
5503 w
->display_table
= p
->display_table
;
5504 w
->orig_top_line
= p
->orig_top_line
;
5505 w
->orig_total_lines
= p
->orig_total_lines
;
5506 w
->left_margin_cols
= p
->left_margin_cols
;
5507 w
->right_margin_cols
= p
->right_margin_cols
;
5508 w
->left_fringe_width
= p
->left_fringe_width
;
5509 w
->right_fringe_width
= p
->right_fringe_width
;
5510 w
->fringes_outside_margins
= p
->fringes_outside_margins
;
5511 w
->scroll_bar_width
= p
->scroll_bar_width
;
5512 w
->vertical_scroll_bar_type
= p
->vertical_scroll_bar_type
;
5513 XSETFASTINT (w
->last_modified
, 0);
5514 XSETFASTINT (w
->last_overlay_modified
, 0);
5516 /* Reinstall the saved buffer and pointers into it. */
5517 if (NILP (p
->buffer
))
5518 w
->buffer
= p
->buffer
;
5521 if (!NILP (XBUFFER (p
->buffer
)->name
))
5522 /* If saved buffer is alive, install it. */
5524 w
->buffer
= p
->buffer
;
5525 w
->start_at_line_beg
= p
->start_at_line_beg
;
5526 set_marker_restricted (w
->start
, p
->start
, w
->buffer
);
5527 set_marker_restricted (w
->pointm
, p
->pointm
, w
->buffer
);
5528 Fset_marker (XBUFFER (w
->buffer
)->mark
,
5529 p
->mark
, w
->buffer
);
5531 /* As documented in Fcurrent_window_configuration, don't
5532 restore the location of point in the buffer which was
5533 current when the window configuration was recorded. */
5534 if (!EQ (p
->buffer
, new_current_buffer
)
5535 && XBUFFER (p
->buffer
) == current_buffer
)
5536 Fgoto_char (w
->pointm
);
5538 else if (NILP (w
->buffer
) || NILP (XBUFFER (w
->buffer
)->name
))
5539 /* Else unless window has a live buffer, get one. */
5541 w
->buffer
= Fcdr (Fcar (Vbuffer_alist
));
5542 /* This will set the markers to beginning of visible
5544 set_marker_restricted (w
->start
, make_number (0), w
->buffer
);
5545 set_marker_restricted (w
->pointm
, make_number (0),w
->buffer
);
5546 w
->start_at_line_beg
= Qt
;
5549 /* Keeping window's old buffer; make sure the markers
5552 /* Set window markers at start of visible range. */
5553 if (XMARKER (w
->start
)->buffer
== 0)
5554 set_marker_restricted (w
->start
, make_number (0),
5556 if (XMARKER (w
->pointm
)->buffer
== 0)
5557 set_marker_restricted_both (w
->pointm
, w
->buffer
,
5558 BUF_PT (XBUFFER (w
->buffer
)),
5559 BUF_PT_BYTE (XBUFFER (w
->buffer
)));
5560 w
->start_at_line_beg
= Qt
;
5565 FRAME_ROOT_WINDOW (f
) = data
->root_window
;
5566 /* Prevent "swapping out point" in the old selected window
5567 using the buffer that has been restored into it.
5568 Use the point value from the beginning of this function
5569 since unshow_buffer (called from delete_all_subwindows)
5570 could have altered it. */
5571 selected_window
= Qnil
;
5572 if (EQ (XWINDOW (data
->current_window
)->buffer
, new_current_buffer
))
5573 set_marker_restricted (XWINDOW (data
->current_window
)->pointm
,
5574 make_number (old_point
),
5575 XWINDOW (data
->current_window
)->buffer
);
5577 Fselect_window (data
->current_window
, Qnil
);
5578 XBUFFER (XWINDOW (selected_window
)->buffer
)->last_selected_window
5581 if (NILP (data
->focus_frame
)
5582 || (FRAMEP (data
->focus_frame
)
5583 && FRAME_LIVE_P (XFRAME (data
->focus_frame
))))
5584 Fredirect_frame_focus (frame
, data
->focus_frame
);
5586 #if 0 /* I don't understand why this is needed, and it causes problems
5587 when the frame's old selected window has been deleted. */
5588 if (f
!= selected_frame
&& FRAME_WINDOW_P (f
))
5589 do_switch_frame (WINDOW_FRAME (XWINDOW (data
->root_window
)),
5593 /* Set the screen height to the value it had before this function. */
5594 if (previous_frame_lines
!= FRAME_LINES (f
)
5595 || previous_frame_cols
!= FRAME_COLS (f
))
5596 change_frame_size (f
, previous_frame_lines
, previous_frame_cols
,
5598 #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS)
5599 if (previous_frame_menu_bar_lines
!= FRAME_MENU_BAR_LINES (f
))
5600 x_set_menu_bar_lines (f
, make_number (previous_frame_menu_bar_lines
),
5602 #ifdef HAVE_WINDOW_SYSTEM
5603 if (previous_frame_tool_bar_lines
!= FRAME_TOOL_BAR_LINES (f
))
5604 x_set_tool_bar_lines (f
, make_number (previous_frame_tool_bar_lines
),
5609 /* Now, free glyph matrices in windows that were not reused. */
5610 for (i
= n
= 0; i
< n_leaf_windows
; ++i
)
5612 if (NILP (leaf_windows
[i
]->buffer
))
5614 /* Assert it's not reused as a combination. */
5615 xassert (NILP (leaf_windows
[i
]->hchild
)
5616 && NILP (leaf_windows
[i
]->vchild
));
5617 free_window_matrices (leaf_windows
[i
]);
5619 else if (EQ (leaf_windows
[i
]->buffer
, new_current_buffer
))
5627 /* Fselect_window will have made f the selected frame, so we
5628 reselect the proper frame here. Fhandle_switch_frame will change the
5629 selected window too, but that doesn't make the call to
5630 Fselect_window above totally superfluous; it still sets f's
5632 if (FRAME_LIVE_P (XFRAME (data
->selected_frame
)))
5633 do_switch_frame (data
->selected_frame
, 0, 0);
5635 if (! NILP (Vwindow_configuration_change_hook
)
5636 && ! NILP (Vrun_hooks
))
5637 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
5640 if (!NILP (new_current_buffer
))
5641 Fset_buffer (new_current_buffer
);
5643 /* Restore the minimum heights recorded in the configuration. */
5644 window_min_height
= XINT (data
->min_height
);
5645 window_min_width
= XINT (data
->min_width
);
5647 Vminibuf_scroll_window
= data
->minibuf_scroll_window
;
5648 minibuf_selected_window
= data
->minibuf_selected_window
;
5650 return (FRAME_LIVE_P (f
) ? Qt
: Qnil
);
5653 /* Mark all windows now on frame as deleted
5654 by setting their buffers to nil. */
5657 delete_all_subwindows (w
)
5658 register struct window
*w
;
5660 if (!NILP (w
->next
))
5661 delete_all_subwindows (XWINDOW (w
->next
));
5662 if (!NILP (w
->vchild
))
5663 delete_all_subwindows (XWINDOW (w
->vchild
));
5664 if (!NILP (w
->hchild
))
5665 delete_all_subwindows (XWINDOW (w
->hchild
));
5667 w
->total_lines
= w
->buffer
; /* See Fset_window_configuration for excuse. */
5669 if (!NILP (w
->buffer
))
5672 /* We set all three of these fields to nil, to make sure that we can
5673 distinguish this dead window from any live window. Live leaf
5674 windows will have buffer set, and combination windows will have
5675 vchild or hchild set. */
5680 Vwindow_list
= Qnil
;
5684 count_windows (window
)
5685 register struct window
*window
;
5687 register int count
= 1;
5688 if (!NILP (window
->next
))
5689 count
+= count_windows (XWINDOW (window
->next
));
5690 if (!NILP (window
->vchild
))
5691 count
+= count_windows (XWINDOW (window
->vchild
));
5692 if (!NILP (window
->hchild
))
5693 count
+= count_windows (XWINDOW (window
->hchild
));
5698 /* Fill vector FLAT with leaf windows under W, starting at index I.
5699 Value is last index + 1. */
5702 get_leaf_windows (w
, flat
, i
)
5704 struct window
**flat
;
5709 if (!NILP (w
->hchild
))
5710 i
= get_leaf_windows (XWINDOW (w
->hchild
), flat
, i
);
5711 else if (!NILP (w
->vchild
))
5712 i
= get_leaf_windows (XWINDOW (w
->vchild
), flat
, i
);
5716 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
5723 /* Return a pointer to the glyph W's physical cursor is on. Value is
5724 null if W's current matrix is invalid, so that no meaningfull glyph
5728 get_phys_cursor_glyph (w
)
5731 struct glyph_row
*row
;
5732 struct glyph
*glyph
;
5734 if (w
->phys_cursor
.vpos
>= 0
5735 && w
->phys_cursor
.vpos
< w
->current_matrix
->nrows
5736 && (row
= MATRIX_ROW (w
->current_matrix
, w
->phys_cursor
.vpos
),
5738 && row
->used
[TEXT_AREA
] > w
->phys_cursor
.hpos
)
5739 glyph
= row
->glyphs
[TEXT_AREA
] + w
->phys_cursor
.hpos
;
5748 save_window_save (window
, vector
, i
)
5750 struct Lisp_Vector
*vector
;
5753 register struct saved_window
*p
;
5754 register struct window
*w
;
5755 register Lisp_Object tem
;
5757 for (;!NILP (window
); window
= w
->next
)
5759 p
= SAVED_WINDOW_N (vector
, i
);
5760 w
= XWINDOW (window
);
5762 XSETFASTINT (w
->temslot
, i
++);
5764 p
->buffer
= w
->buffer
;
5765 p
->left_col
= w
->left_col
;
5766 p
->top_line
= w
->top_line
;
5767 p
->total_cols
= w
->total_cols
;
5768 p
->total_lines
= w
->total_lines
;
5769 p
->hscroll
= w
->hscroll
;
5770 p
->min_hscroll
= w
->min_hscroll
;
5771 p
->display_table
= w
->display_table
;
5772 p
->orig_top_line
= w
->orig_top_line
;
5773 p
->orig_total_lines
= w
->orig_total_lines
;
5774 p
->left_margin_cols
= w
->left_margin_cols
;
5775 p
->right_margin_cols
= w
->right_margin_cols
;
5776 p
->left_fringe_width
= w
->left_fringe_width
;
5777 p
->right_fringe_width
= w
->right_fringe_width
;
5778 p
->fringes_outside_margins
= w
->fringes_outside_margins
;
5779 p
->scroll_bar_width
= w
->scroll_bar_width
;
5780 p
->vertical_scroll_bar_type
= w
->vertical_scroll_bar_type
;
5781 if (!NILP (w
->buffer
))
5783 /* Save w's value of point in the window configuration.
5784 If w is the selected window, then get the value of point
5785 from the buffer; pointm is garbage in the selected window. */
5786 if (EQ (window
, selected_window
))
5788 p
->pointm
= Fmake_marker ();
5789 set_marker_both (p
->pointm
, w
->buffer
,
5790 BUF_PT (XBUFFER (w
->buffer
)),
5791 BUF_PT_BYTE (XBUFFER (w
->buffer
)));
5794 p
->pointm
= Fcopy_marker (w
->pointm
, Qnil
);
5796 p
->start
= Fcopy_marker (w
->start
, Qnil
);
5797 p
->start_at_line_beg
= w
->start_at_line_beg
;
5799 tem
= XBUFFER (w
->buffer
)->mark
;
5800 p
->mark
= Fcopy_marker (tem
, Qnil
);
5807 p
->start_at_line_beg
= Qnil
;
5810 if (NILP (w
->parent
))
5813 p
->parent
= XWINDOW (w
->parent
)->temslot
;
5818 p
->prev
= XWINDOW (w
->prev
)->temslot
;
5820 if (!NILP (w
->vchild
))
5821 i
= save_window_save (w
->vchild
, vector
, i
);
5822 if (!NILP (w
->hchild
))
5823 i
= save_window_save (w
->hchild
, vector
, i
);
5829 DEFUN ("current-window-configuration", Fcurrent_window_configuration
,
5830 Scurrent_window_configuration
, 0, 1, 0,
5831 doc
: /* Return an object representing the current window configuration of FRAME.
5832 If FRAME is nil or omitted, use the selected frame.
5833 This describes the number of windows, their sizes and current buffers,
5834 and for each displayed buffer, where display starts, and the positions of
5835 point and mark. An exception is made for point in the current buffer:
5836 its value is -not- saved.
5837 This also records the currently selected frame, and FRAME's focus
5838 redirection (see `redirect-frame-focus'). */)
5842 register Lisp_Object tem
;
5843 register int n_windows
;
5844 register struct save_window_data
*data
;
5845 register struct Lisp_Vector
*vec
;
5850 frame
= selected_frame
;
5851 CHECK_LIVE_FRAME (frame
);
5854 n_windows
= count_windows (XWINDOW (FRAME_ROOT_WINDOW (f
)));
5855 vec
= allocate_other_vector (VECSIZE (struct save_window_data
));
5856 data
= (struct save_window_data
*)vec
;
5858 XSETFASTINT (data
->frame_cols
, FRAME_COLS (f
));
5859 XSETFASTINT (data
->frame_lines
, FRAME_LINES (f
));
5860 XSETFASTINT (data
->frame_menu_bar_lines
, FRAME_MENU_BAR_LINES (f
));
5861 XSETFASTINT (data
->frame_tool_bar_lines
, FRAME_TOOL_BAR_LINES (f
));
5862 data
->selected_frame
= selected_frame
;
5863 data
->current_window
= FRAME_SELECTED_WINDOW (f
);
5864 XSETBUFFER (data
->current_buffer
, current_buffer
);
5865 data
->minibuf_scroll_window
= minibuf_level
> 0 ? Vminibuf_scroll_window
: Qnil
;
5866 data
->minibuf_selected_window
= minibuf_level
> 0 ? minibuf_selected_window
: Qnil
;
5867 data
->root_window
= FRAME_ROOT_WINDOW (f
);
5868 data
->focus_frame
= FRAME_FOCUS_FRAME (f
);
5869 XSETINT (data
->min_height
, window_min_height
);
5870 XSETINT (data
->min_width
, window_min_width
);
5871 tem
= Fmake_vector (make_number (n_windows
), Qnil
);
5872 data
->saved_windows
= tem
;
5873 for (i
= 0; i
< n_windows
; i
++)
5874 XVECTOR (tem
)->contents
[i
]
5875 = Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE
), Qnil
);
5876 save_window_save (FRAME_ROOT_WINDOW (f
), XVECTOR (tem
), 0);
5877 XSETWINDOW_CONFIGURATION (tem
, data
);
5881 DEFUN ("save-window-excursion", Fsave_window_excursion
, Ssave_window_excursion
,
5883 doc
: /* Execute body, preserving window sizes and contents.
5884 Restore which buffer appears in which window, where display starts,
5885 and the value of point and mark for each window.
5886 Also restore the choice of selected window.
5887 Also restore which buffer is current.
5888 Does not restore the value of point in current buffer.
5889 usage: (save-window-excursion BODY ...) */)
5893 register Lisp_Object val
;
5894 register int count
= SPECPDL_INDEX ();
5896 record_unwind_protect (Fset_window_configuration
,
5897 Fcurrent_window_configuration (Qnil
));
5898 val
= Fprogn (args
);
5899 return unbind_to (count
, val
);
5903 /***********************************************************************
5905 ***********************************************************************/
5907 DEFUN ("set-window-margins", Fset_window_margins
, Sset_window_margins
,
5909 doc
: /* Set width of marginal areas of window WINDOW.
5910 If WINDOW is nil, set margins of the currently selected window.
5911 Second arg LEFT-WIDTH specifies the number of character cells to
5912 reserve for the left marginal area. Optional third arg RIGHT-WIDTH
5913 does the same for the right marginal area. A nil width parameter
5914 means no margin. */)
5915 (window
, left
, right
)
5916 Lisp_Object window
, left
, right
;
5918 struct window
*w
= decode_window (window
);
5920 /* Translate negative or zero widths to nil.
5921 Margins that are too wide have to be checked elsewhere. */
5925 CHECK_NUMBER (left
);
5926 if (XINT (left
) <= 0)
5932 CHECK_NUMBER (right
);
5933 if (XINT (right
) <= 0)
5937 if (!EQ (w
->left_margin_cols
, left
)
5938 || !EQ (w
->right_margin_cols
, right
))
5940 w
->left_margin_cols
= left
;
5941 w
->right_margin_cols
= right
;
5943 adjust_window_margins (w
);
5945 ++windows_or_buffers_changed
;
5946 adjust_glyphs (XFRAME (WINDOW_FRAME (w
)));
5953 DEFUN ("window-margins", Fwindow_margins
, Swindow_margins
,
5955 doc
: /* Get width of marginal areas of window WINDOW.
5956 If WINDOW is omitted or nil, use the currently selected window.
5957 Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH).
5958 If a marginal area does not exist, its width will be returned
5963 struct window
*w
= decode_window (window
);
5964 return Fcons (w
->left_margin_cols
, w
->right_margin_cols
);
5969 /***********************************************************************
5971 ***********************************************************************/
5973 DEFUN ("set-window-fringes", Fset_window_fringes
, Sset_window_fringes
,
5975 doc
: /* Set the fringe widths of window WINDOW.
5976 If WINDOW is nil, set the fringe widths of the currently selected
5978 Second arg LEFT-WIDTH specifies the number of pixels to reserve for
5979 the left fringe. Optional third arg RIGHT-WIDTH specifies the right
5980 fringe width. If a fringe width arg is nil, that means to use the
5981 frame's default fringe width. Default fringe widths can be set with
5982 the command `set-fringe-style'.
5983 If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes
5984 outside of the display margins. By default, fringes are drawn between
5985 display marginal areas and the text area. */)
5986 (window
, left
, right
, outside_margins
)
5987 Lisp_Object window
, left
, right
, outside_margins
;
5989 struct window
*w
= decode_window (window
);
5992 CHECK_NUMBER (left
);
5994 CHECK_NUMBER (right
);
5996 if (!EQ (w
->left_fringe_width
, left
)
5997 || !EQ (w
->right_fringe_width
, right
)
5998 || !EQ (w
->fringes_outside_margins
, outside_margins
))
6000 w
->left_fringe_width
= left
;
6001 w
->right_fringe_width
= right
;
6002 w
->fringes_outside_margins
= outside_margins
;
6004 adjust_window_margins (w
);
6006 clear_glyph_matrix (w
->current_matrix
);
6007 w
->window_end_valid
= Qnil
;
6009 ++windows_or_buffers_changed
;
6010 adjust_glyphs (XFRAME (WINDOW_FRAME (w
)));
6017 DEFUN ("window-fringes", Fwindow_fringes
, Swindow_fringes
,
6019 doc
: /* Get width of fringes of window WINDOW.
6020 If WINDOW is omitted or nil, use the currently selected window.
6021 Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */)
6025 struct window
*w
= decode_window (window
);
6026 return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w
)),
6027 Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w
)),
6028 Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
) ?
6029 Qt
: Qnil
), Qnil
)));
6034 /***********************************************************************
6036 ***********************************************************************/
6038 DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars
, Sset_window_scroll_bars
,
6040 doc
: /* Set width and type of scroll bars of window WINDOW.
6041 If window is nil, set scroll bars of the currently selected window.
6042 Second parameter WIDTH specifies the pixel width for the scroll bar;
6043 this is automatically adjusted to a multiple of the frame column width.
6044 Third parameter VERTICAL-TYPE specifies the type of the vertical scroll
6045 bar: left, right, or nil.
6046 If WIDTH is nil, use the frame's scroll-bar width.
6047 If TYPE is t, use the frame's scroll-bar type. */)
6048 (window
, width
, vertical_type
, horizontal_type
)
6049 Lisp_Object window
, width
, vertical_type
, horizontal_type
;
6051 struct window
*w
= decode_window (window
);
6054 CHECK_NUMBER (width
);
6056 if (XINT (width
) == 0)
6057 vertical_type
= Qnil
;
6059 if (!(EQ (vertical_type
, Qnil
)
6060 || EQ (vertical_type
, Qleft
)
6061 || EQ (vertical_type
, Qright
)
6062 || EQ (vertical_type
, Qt
)))
6063 error ("Invalid type of vertical scroll bar");
6065 if (!EQ (w
->scroll_bar_width
, width
)
6066 || !EQ (w
->vertical_scroll_bar_type
, vertical_type
))
6068 w
->scroll_bar_width
= width
;
6069 w
->vertical_scroll_bar_type
= vertical_type
;
6071 adjust_window_margins (w
);
6073 clear_glyph_matrix (w
->current_matrix
);
6074 w
->window_end_valid
= Qnil
;
6076 ++windows_or_buffers_changed
;
6077 adjust_glyphs (XFRAME (WINDOW_FRAME (w
)));
6084 DEFUN ("window-scroll-bars", Fwindow_scroll_bars
, Swindow_scroll_bars
,
6086 doc
: /* Get width and type of scroll bars of window WINDOW.
6087 If WINDOW is omitted or nil, use the currently selected window.
6088 Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE).
6089 If WIDTH is nil or TYPE is t, the window is using the frame's corresponding
6094 struct window
*w
= decode_window (window
);
6095 return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w
)
6096 ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w
)
6097 : WINDOW_SCROLL_BAR_AREA_WIDTH (w
))),
6098 Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w
)),
6099 Fcons (w
->vertical_scroll_bar_type
,
6100 Fcons (Qnil
, Qnil
))));
6105 /***********************************************************************
6107 ***********************************************************************/
6109 DEFUN ("window-vscroll", Fwindow_vscroll
, Swindow_vscroll
, 0, 1, 0,
6110 doc
: /* Return the amount by which WINDOW is scrolled vertically.
6111 Use the selected window if WINDOW is nil or omitted.
6112 Value is a multiple of the canonical character height of WINDOW. */)
6121 window
= selected_window
;
6123 CHECK_WINDOW (window
);
6124 w
= XWINDOW (window
);
6125 f
= XFRAME (w
->frame
);
6127 if (FRAME_WINDOW_P (f
))
6128 result
= FRAME_CANON_Y_FROM_PIXEL_Y (f
, -w
->vscroll
);
6130 result
= make_number (0);
6135 DEFUN ("set-window-vscroll", Fset_window_vscroll
, Sset_window_vscroll
,
6137 doc
: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL.
6138 WINDOW nil means use the selected window. VSCROLL is a non-negative
6139 multiple of the canonical character height of WINDOW. */)
6141 Lisp_Object window
, vscroll
;
6147 window
= selected_window
;
6149 CHECK_WINDOW (window
);
6150 CHECK_NUMBER_OR_FLOAT (vscroll
);
6152 w
= XWINDOW (window
);
6153 f
= XFRAME (w
->frame
);
6155 if (FRAME_WINDOW_P (f
))
6157 int old_dy
= w
->vscroll
;
6159 w
->vscroll
= - FRAME_LINE_HEIGHT (f
) * XFLOATINT (vscroll
);
6160 w
->vscroll
= min (w
->vscroll
, 0);
6162 /* Adjust glyph matrix of the frame if the virtual display
6163 area becomes larger than before. */
6164 if (w
->vscroll
< 0 && w
->vscroll
< old_dy
)
6167 /* Prevent redisplay shortcuts. */
6168 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
6171 return Fwindow_vscroll (window
);
6175 /* Call FN for all leaf windows on frame F. FN is called with the
6176 first argument being a pointer to the leaf window, and with
6177 additional argument USER_DATA. Stops when FN returns 0. */
6180 foreach_window (f
, fn
, user_data
)
6182 int (* fn
) P_ ((struct window
*, void *));
6185 foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f
)), fn
, user_data
);
6189 /* Helper function for foreach_window. Call FN for all leaf windows
6190 reachable from W. FN is called with the first argument being a
6191 pointer to the leaf window, and with additional argument USER_DATA.
6192 Stop when FN returns 0. Value is 0 if stopped by FN. */
6195 foreach_window_1 (w
, fn
, user_data
)
6197 int (* fn
) P_ ((struct window
*, void *));
6202 for (cont
= 1; w
&& cont
;)
6204 if (!NILP (w
->hchild
))
6205 cont
= foreach_window_1 (XWINDOW (w
->hchild
), fn
, user_data
);
6206 else if (!NILP (w
->vchild
))
6207 cont
= foreach_window_1 (XWINDOW (w
->vchild
), fn
, user_data
);
6209 cont
= fn (w
, user_data
);
6211 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
6218 /* Freeze or unfreeze the window start of W unless it is a
6219 mini-window or the selected window. FREEZE_P non-null means freeze
6220 the window start. */
6223 freeze_window_start (w
, freeze_p
)
6227 if (w
== XWINDOW (selected_window
)
6228 || MINI_WINDOW_P (w
)
6229 || (MINI_WINDOW_P (XWINDOW (selected_window
))
6230 && ! NILP (Vminibuf_scroll_window
)
6231 && w
== XWINDOW (Vminibuf_scroll_window
)))
6234 w
->frozen_window_start_p
= freeze_p
!= NULL
;
6239 /* Freeze or unfreeze the window starts of all leaf windows on frame
6240 F, except the selected window and a mini-window. FREEZE_P non-zero
6241 means freeze the window start. */
6244 freeze_window_starts (f
, freeze_p
)
6248 foreach_window (f
, freeze_window_start
, (void *) (freeze_p
? f
: 0));
6252 /***********************************************************************
6254 ***********************************************************************/
6256 /* Return 1 if window configurations C1 and C2
6257 describe the same state of affairs. This is used by Fequal. */
6260 compare_window_configurations (c1
, c2
, ignore_positions
)
6262 int ignore_positions
;
6264 register struct save_window_data
*d1
, *d2
;
6265 struct Lisp_Vector
*sw1
, *sw2
;
6268 if (!WINDOW_CONFIGURATIONP (c1
))
6269 wrong_type_argument (Qwindow_configuration_p
, c1
);
6270 if (!WINDOW_CONFIGURATIONP (c2
))
6271 wrong_type_argument (Qwindow_configuration_p
, c2
);
6273 d1
= (struct save_window_data
*) XVECTOR (c1
);
6274 d2
= (struct save_window_data
*) XVECTOR (c2
);
6275 sw1
= XVECTOR (d1
->saved_windows
);
6276 sw2
= XVECTOR (d2
->saved_windows
);
6278 if (! EQ (d1
->frame_cols
, d2
->frame_cols
))
6280 if (! EQ (d1
->frame_lines
, d2
->frame_lines
))
6282 if (! EQ (d1
->frame_menu_bar_lines
, d2
->frame_menu_bar_lines
))
6284 if (! EQ (d1
->selected_frame
, d2
->selected_frame
))
6286 /* Don't compare the current_window field directly.
6287 Instead see w1_is_current and w2_is_current, below. */
6288 if (! EQ (d1
->current_buffer
, d2
->current_buffer
))
6290 if (! ignore_positions
)
6292 if (! EQ (d1
->minibuf_scroll_window
, d2
->minibuf_scroll_window
))
6294 if (! EQ (d1
->minibuf_selected_window
, d2
->minibuf_selected_window
))
6297 /* Don't compare the root_window field.
6298 We don't require the two configurations
6299 to use the same window object,
6300 and the two root windows must be equivalent
6301 if everything else compares equal. */
6302 if (! EQ (d1
->focus_frame
, d2
->focus_frame
))
6304 if (! EQ (d1
->min_width
, d2
->min_width
))
6306 if (! EQ (d1
->min_height
, d2
->min_height
))
6309 /* Verify that the two confis have the same number of windows. */
6310 if (sw1
->size
!= sw2
->size
)
6313 for (i
= 0; i
< sw1
->size
; i
++)
6315 struct saved_window
*p1
, *p2
;
6316 int w1_is_current
, w2_is_current
;
6318 p1
= SAVED_WINDOW_N (sw1
, i
);
6319 p2
= SAVED_WINDOW_N (sw2
, i
);
6321 /* Verify that the current windows in the two
6322 configurations correspond to each other. */
6323 w1_is_current
= EQ (d1
->current_window
, p1
->window
);
6324 w2_is_current
= EQ (d2
->current_window
, p2
->window
);
6326 if (w1_is_current
!= w2_is_current
)
6329 /* Verify that the corresponding windows do match. */
6330 if (! EQ (p1
->buffer
, p2
->buffer
))
6332 if (! EQ (p1
->left_col
, p2
->left_col
))
6334 if (! EQ (p1
->top_line
, p2
->top_line
))
6336 if (! EQ (p1
->total_cols
, p2
->total_cols
))
6338 if (! EQ (p1
->total_lines
, p2
->total_lines
))
6340 if (! EQ (p1
->display_table
, p2
->display_table
))
6342 if (! EQ (p1
->parent
, p2
->parent
))
6344 if (! EQ (p1
->prev
, p2
->prev
))
6346 if (! ignore_positions
)
6348 if (! EQ (p1
->hscroll
, p2
->hscroll
))
6350 if (!EQ (p1
->min_hscroll
, p2
->min_hscroll
))
6352 if (! EQ (p1
->start_at_line_beg
, p2
->start_at_line_beg
))
6354 if (NILP (Fequal (p1
->start
, p2
->start
)))
6356 if (NILP (Fequal (p1
->pointm
, p2
->pointm
)))
6358 if (NILP (Fequal (p1
->mark
, p2
->mark
)))
6361 if (! EQ (p1
->left_margin_cols
, p2
->left_margin_cols
))
6363 if (! EQ (p1
->right_margin_cols
, p2
->right_margin_cols
))
6365 if (! EQ (p1
->left_fringe_width
, p2
->left_fringe_width
))
6367 if (! EQ (p1
->right_fringe_width
, p2
->right_fringe_width
))
6369 if (! EQ (p1
->fringes_outside_margins
, p2
->fringes_outside_margins
))
6371 if (! EQ (p1
->scroll_bar_width
, p2
->scroll_bar_width
))
6373 if (! EQ (p1
->vertical_scroll_bar_type
, p2
->vertical_scroll_bar_type
))
6380 DEFUN ("compare-window-configurations", Fcompare_window_configurations
,
6381 Scompare_window_configurations
, 2, 2, 0,
6382 doc
: /* Compare two window configurations as regards the structure of windows.
6383 This function ignores details such as the values of point and mark
6384 and scrolling positions. */)
6388 if (compare_window_configurations (x
, y
, 1))
6396 struct frame
*f
= make_initial_frame ();
6397 XSETFRAME (selected_frame
, f
);
6398 Vterminal_frame
= selected_frame
;
6399 minibuf_window
= f
->minibuffer_window
;
6400 selected_window
= f
->selected_window
;
6401 last_nonminibuf_frame
= f
;
6403 window_initialized
= 1;
6409 Vwindow_list
= Qnil
;
6415 Qwindow_size_fixed
= intern ("window-size-fixed");
6416 staticpro (&Qwindow_size_fixed
);
6418 staticpro (&Qwindow_configuration_change_hook
);
6419 Qwindow_configuration_change_hook
6420 = intern ("window-configuration-change-hook");
6422 Qwindowp
= intern ("windowp");
6423 staticpro (&Qwindowp
);
6425 Qwindow_configuration_p
= intern ("window-configuration-p");
6426 staticpro (&Qwindow_configuration_p
);
6428 Qwindow_live_p
= intern ("window-live-p");
6429 staticpro (&Qwindow_live_p
);
6431 Qtemp_buffer_show_hook
= intern ("temp-buffer-show-hook");
6432 staticpro (&Qtemp_buffer_show_hook
);
6434 staticpro (&Vwindow_list
);
6436 minibuf_selected_window
= Qnil
;
6437 staticpro (&minibuf_selected_window
);
6439 DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function
,
6440 doc
: /* Non-nil means call as function to display a help buffer.
6441 The function is called with one argument, the buffer to be displayed.
6442 Used by `with-output-to-temp-buffer'.
6443 If this function is used, then it must do the entire job of showing
6444 the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */);
6445 Vtemp_buffer_show_function
= Qnil
;
6447 DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function
,
6448 doc
: /* If non-nil, function to call to handle `display-buffer'.
6449 It will receive two args, the buffer and a flag which if non-nil means
6450 that the currently selected window is not acceptable.
6451 Commands such as `switch-to-buffer-other-window' and `find-file-other-window'
6452 work using this function. */);
6453 Vdisplay_buffer_function
= Qnil
;
6455 DEFVAR_LISP ("even-window-heights", &Veven_window_heights
,
6456 doc
: /* *If non-nil, `display-buffer' should even the window heights.
6457 If nil, `display-buffer' will leave the window configuration alone. */);
6458 Veven_window_heights
= Qt
;
6460 DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window
,
6461 doc
: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */);
6462 Vminibuf_scroll_window
= Qnil
;
6464 DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows
,
6465 doc
: /* Non-nil means to use `mode-line-inactive' face in non-selected windows.
6466 If the minibuffer is active, the `minibuffer-scroll-window' mode line
6467 is displayed in the `mode-line' face. */);
6468 mode_line_in_non_selected_windows
= 1;
6470 DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer
,
6471 doc
: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */);
6472 Vother_window_scroll_buffer
= Qnil
;
6474 DEFVAR_BOOL ("pop-up-frames", &pop_up_frames
,
6475 doc
: /* *Non-nil means `display-buffer' should make a separate frame. */);
6478 DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames
,
6479 doc
: /* *Non-nil means `display-buffer' should reuse frames.
6480 If the buffer in question is already displayed in a frame, raise that frame. */);
6481 display_buffer_reuse_frames
= 0;
6483 DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function
,
6484 doc
: /* Function to call to handle automatic new frame creation.
6485 It is called with no arguments and should return a newly created frame.
6487 A typical value might be `(lambda () (new-frame pop-up-frame-alist))'
6488 where `pop-up-frame-alist' would hold the default frame parameters. */);
6489 Vpop_up_frame_function
= Qnil
;
6491 DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names
,
6492 doc
: /* *List of buffer names that should have their own special frames.
6493 Displaying a buffer whose name is in this list makes a special frame for it
6494 using `special-display-function'. See also `special-display-regexps'.
6496 An element of the list can be a list instead of just a string.
6497 There are two ways to use a list as an element:
6498 (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...)
6499 In the first case, FRAME-PARAMETERS are used to create the frame.
6500 In the latter case, FUNCTION is called with BUFFER as the first argument,
6501 followed by OTHER-ARGS--it can display BUFFER in any way it likes.
6502 All this is done by the function found in `special-display-function'.
6504 If the specified frame parameters include (same-buffer . t), the
6505 buffer is displayed in the currently selected window. Otherwise, if
6506 they include (same-frame . t), the buffer is displayed in a new window
6507 in the currently selected frame.
6509 If this variable appears \"not to work\", because you add a name to it
6510 but that buffer still appears in the selected window, look at the
6511 values of `same-window-buffer-names' and `same-window-regexps'.
6512 Those variables take precedence over this one. */);
6513 Vspecial_display_buffer_names
= Qnil
;
6515 DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps
,
6516 doc
: /* *List of regexps saying which buffers should have their own special frames.
6517 If a buffer name matches one of these regexps, it gets its own frame.
6518 Displaying a buffer whose name is in this list makes a special frame for it
6519 using `special-display-function'.
6521 An element of the list can be a list instead of just a string.
6522 There are two ways to use a list as an element:
6523 (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...)
6524 In the first case, FRAME-PARAMETERS are used to create the frame.
6525 In the latter case, FUNCTION is called with the buffer as first argument,
6526 followed by OTHER-ARGS--it can display the buffer in any way it likes.
6527 All this is done by the function found in `special-display-function'.
6529 If the specified frame parameters include (same-buffer . t), the
6530 buffer is displayed in the currently selected window. Otherwise, if
6531 they include (same-frame . t), the buffer is displayed in a new window
6532 in the currently selected frame.
6534 If this variable appears \"not to work\", because you add a regexp to it
6535 but the matching buffers still appear in the selected window, look at the
6536 values of `same-window-buffer-names' and `same-window-regexps'.
6537 Those variables take precedence over this one. */);
6538 Vspecial_display_regexps
= Qnil
;
6540 DEFVAR_LISP ("special-display-function", &Vspecial_display_function
,
6541 doc
: /* Function to call to make a new frame for a special buffer.
6542 It is called with two arguments, the buffer and optional buffer specific
6543 data, and should return a window displaying that buffer.
6544 The default value normally makes a separate frame for the buffer,
6545 using `special-display-frame-alist' to specify the frame parameters.
6546 But if the buffer specific data includes (same-buffer . t) then the
6547 buffer is displayed in the current selected window.
6548 Otherwise if it includes (same-frame . t) then the buffer is displayed in
6549 a new window in the currently selected frame.
6551 A buffer is special if it is listed in `special-display-buffer-names'
6552 or matches a regexp in `special-display-regexps'. */);
6553 Vspecial_display_function
= Qnil
;
6555 DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names
,
6556 doc
: /* *List of buffer names that should appear in the selected window.
6557 Displaying one of these buffers using `display-buffer' or `pop-to-buffer'
6558 switches to it in the selected window, rather than making it appear
6559 in some other window.
6561 An element of the list can be a cons cell instead of just a string.
6562 Then the car must be a string, which specifies the buffer name.
6563 This is for compatibility with `special-display-buffer-names';
6564 the cdr of the cons cell is ignored.
6566 See also `same-window-regexps'. */);
6567 Vsame_window_buffer_names
= Qnil
;
6569 DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps
,
6570 doc
: /* *List of regexps saying which buffers should appear in the selected window.
6571 If a buffer name matches one of these regexps, then displaying it
6572 using `display-buffer' or `pop-to-buffer' switches to it
6573 in the selected window, rather than making it appear in some other window.
6575 An element of the list can be a cons cell instead of just a string.
6576 Then the car must be a string, which specifies the buffer name.
6577 This is for compatibility with `special-display-buffer-names';
6578 the cdr of the cons cell is ignored.
6580 See also `same-window-buffer-names'. */);
6581 Vsame_window_regexps
= Qnil
;
6583 DEFVAR_BOOL ("pop-up-windows", &pop_up_windows
,
6584 doc
: /* *Non-nil means display-buffer should make new windows. */);
6587 DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines
,
6588 doc
: /* *Number of lines of continuity when scrolling by screenfuls. */);
6589 next_screen_context_lines
= 2;
6591 DEFVAR_INT ("split-height-threshold", &split_height_threshold
,
6592 doc
: /* *display-buffer would prefer to split the largest window if this large.
6593 If there is only one window, it is split regardless of this value. */);
6594 split_height_threshold
= 500;
6596 DEFVAR_INT ("window-min-height", &window_min_height
,
6597 doc
: /* *Delete any window less than this tall (including its mode line). */);
6598 window_min_height
= 4;
6600 DEFVAR_INT ("window-min-width", &window_min_width
,
6601 doc
: /* *Delete any window less than this wide. */);
6602 window_min_width
= 10;
6604 DEFVAR_LISP ("scroll-preserve-screen-position",
6605 &Vscroll_preserve_screen_position
,
6606 doc
: /* *Non-nil means scroll commands move point to keep its screen line unchanged. */);
6607 Vscroll_preserve_screen_position
= Qnil
;
6609 DEFVAR_LISP ("window-configuration-change-hook",
6610 &Vwindow_configuration_change_hook
,
6611 doc
: /* Functions to call when window configuration changes.
6612 The selected frame is the one whose configuration has changed. */);
6613 Vwindow_configuration_change_hook
= Qnil
;
6615 DEFVAR_BOOL ("window-size-fixed", &window_size_fixed
,
6616 doc
: /* Non-nil in a buffer means windows displaying the buffer are fixed-size.
6617 Emacs won't change the size of any window displaying that buffer,
6618 unless you explicitly change the size, or Emacs has no other choice.
6619 This variable automatically becomes buffer-local when set. */);
6620 Fmake_variable_buffer_local (Qwindow_size_fixed
);
6621 window_size_fixed
= 0;
6623 defsubr (&Sselected_window
);
6624 defsubr (&Sminibuffer_window
);
6625 defsubr (&Swindow_minibuffer_p
);
6626 defsubr (&Swindowp
);
6627 defsubr (&Swindow_live_p
);
6628 defsubr (&Spos_visible_in_window_p
);
6629 defsubr (&Swindow_buffer
);
6630 defsubr (&Swindow_height
);
6631 defsubr (&Swindow_width
);
6632 defsubr (&Swindow_hscroll
);
6633 defsubr (&Sset_window_hscroll
);
6634 defsubr (&Swindow_redisplay_end_trigger
);
6635 defsubr (&Sset_window_redisplay_end_trigger
);
6636 defsubr (&Swindow_edges
);
6637 defsubr (&Swindow_pixel_edges
);
6638 defsubr (&Swindow_inside_edges
);
6639 defsubr (&Swindow_inside_pixel_edges
);
6640 defsubr (&Scoordinates_in_window_p
);
6641 defsubr (&Swindow_at
);
6642 defsubr (&Swindow_point
);
6643 defsubr (&Swindow_start
);
6644 defsubr (&Swindow_end
);
6645 defsubr (&Sset_window_point
);
6646 defsubr (&Sset_window_start
);
6647 defsubr (&Swindow_dedicated_p
);
6648 defsubr (&Sset_window_dedicated_p
);
6649 defsubr (&Swindow_display_table
);
6650 defsubr (&Sset_window_display_table
);
6651 defsubr (&Snext_window
);
6652 defsubr (&Sprevious_window
);
6653 defsubr (&Sother_window
);
6654 defsubr (&Sget_lru_window
);
6655 defsubr (&Sget_largest_window
);
6656 defsubr (&Sget_buffer_window
);
6657 defsubr (&Sdelete_other_windows
);
6658 defsubr (&Sdelete_windows_on
);
6659 defsubr (&Sreplace_buffer_in_windows
);
6660 defsubr (&Sdelete_window
);
6661 defsubr (&Sset_window_buffer
);
6662 defsubr (&Sselect_window
);
6663 defsubr (&Sspecial_display_p
);
6664 defsubr (&Ssame_window_p
);
6665 defsubr (&Sdisplay_buffer
);
6666 defsubr (&Sforce_window_update
);
6667 defsubr (&Ssplit_window
);
6668 defsubr (&Senlarge_window
);
6669 defsubr (&Sshrink_window
);
6670 defsubr (&Sscroll_up
);
6671 defsubr (&Sscroll_down
);
6672 defsubr (&Sscroll_left
);
6673 defsubr (&Sscroll_right
);
6674 defsubr (&Sother_window_for_scrolling
);
6675 defsubr (&Sscroll_other_window
);
6676 defsubr (&Sminibuffer_selected_window
);
6677 defsubr (&Srecenter
);
6678 defsubr (&Swindow_text_height
);
6679 defsubr (&Smove_to_window_line
);
6680 defsubr (&Swindow_configuration_p
);
6681 defsubr (&Swindow_configuration_frame
);
6682 defsubr (&Sset_window_configuration
);
6683 defsubr (&Scurrent_window_configuration
);
6684 defsubr (&Ssave_window_excursion
);
6685 defsubr (&Sset_window_margins
);
6686 defsubr (&Swindow_margins
);
6687 defsubr (&Sset_window_fringes
);
6688 defsubr (&Swindow_fringes
);
6689 defsubr (&Sset_window_scroll_bars
);
6690 defsubr (&Swindow_scroll_bars
);
6691 defsubr (&Swindow_vscroll
);
6692 defsubr (&Sset_window_vscroll
);
6693 defsubr (&Scompare_window_configurations
);
6694 defsubr (&Swindow_list
);
6700 initial_define_key (control_x_map
, '1', "delete-other-windows");
6701 initial_define_key (control_x_map
, '2', "split-window");
6702 initial_define_key (control_x_map
, '0', "delete-window");
6703 initial_define_key (control_x_map
, 'o', "other-window");
6704 initial_define_key (control_x_map
, '^', "enlarge-window");
6705 initial_define_key (control_x_map
, '<', "scroll-left");
6706 initial_define_key (control_x_map
, '>', "scroll-right");
6708 initial_define_key (global_map
, Ctl ('V'), "scroll-up");
6709 initial_define_key (meta_map
, Ctl ('V'), "scroll-other-window");
6710 initial_define_key (meta_map
, 'v', "scroll-down");
6712 initial_define_key (global_map
, Ctl('L'), "recenter");
6713 initial_define_key (meta_map
, 'r', "move-to-window-line");
6716 /* arch-tag: 90a9c576-0590-48f1-a5f1-6c96a0452d9f
6717 (do not change this comment) */