1 /* Window creation, deletion and examination for GNU Emacs.
2 Does not include redisplay.
3 Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1996, 1997, 1998, 2000,
4 2001, 2002, 2003, 2004, 2005, 2006 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., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA. */
34 #include "dispextern.h"
35 #include "blockinput.h"
36 #include "intervals.h"
40 #endif /* HAVE_X_WINDOWS */
52 Lisp_Object Qwindowp
, Qwindow_live_p
, Qwindow_configuration_p
;
53 Lisp_Object Qscroll_up
, Qscroll_down
;
54 Lisp_Object Qwindow_size_fixed
;
55 extern Lisp_Object Qleft_margin
, Qright_margin
;
57 static int displayed_window_lines
P_ ((struct window
*));
58 static struct window
*decode_window
P_ ((Lisp_Object
));
59 static int count_windows
P_ ((struct window
*));
60 static int get_leaf_windows
P_ ((struct window
*, struct window
**, int));
61 static void window_scroll
P_ ((Lisp_Object
, int, int, int));
62 static void window_scroll_pixel_based
P_ ((Lisp_Object
, int, int, int));
63 static void window_scroll_line_based
P_ ((Lisp_Object
, int, int, int));
64 static int window_min_size_1
P_ ((struct window
*, int));
65 static int window_min_size
P_ ((struct window
*, int, int, int *));
66 static void size_window
P_ ((Lisp_Object
, int, int, int));
67 static int freeze_window_start
P_ ((struct window
*, void *));
68 static int window_fixed_size_p
P_ ((struct window
*, int, int));
69 static void enlarge_window
P_ ((Lisp_Object
, int, int));
70 static Lisp_Object window_list
P_ ((void));
71 static int add_window_to_list
P_ ((struct window
*, void *));
72 static int candidate_window_p
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
,
74 static Lisp_Object next_window
P_ ((Lisp_Object
, Lisp_Object
,
76 static void decode_next_window_args
P_ ((Lisp_Object
*, Lisp_Object
*,
78 static int foreach_window_1
P_ ((struct window
*,
79 int (* fn
) (struct window
*, void *),
81 static Lisp_Object window_list_1
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
));
83 /* This is the window in which the terminal's cursor should
84 be left when nothing is being done with it. This must
85 always be a leaf window, and its buffer is selected by
86 the top level editing loop at the end of each command.
88 This value is always the same as
89 FRAME_SELECTED_WINDOW (selected_frame). */
91 Lisp_Object selected_window
;
93 /* A list of all windows for use by next_window and Fwindow_list.
94 Functions creating or deleting windows should invalidate this cache
95 by setting it to nil. */
97 Lisp_Object Vwindow_list
;
99 /* The mini-buffer window of the selected frame.
100 Note that you cannot test for mini-bufferness of an arbitrary window
101 by comparing against this; but you can test for mini-bufferness of
102 the selected window. */
104 Lisp_Object minibuf_window
;
106 /* Non-nil means it is the window whose mode line should be
107 shown as the selected window when the minibuffer is selected. */
109 Lisp_Object minibuf_selected_window
;
111 /* Non-nil means it is the window for C-M-v to scroll
112 when the mini-buffer is selected. */
114 Lisp_Object Vminibuf_scroll_window
;
116 /* Non-nil means this is the buffer whose window C-M-v should scroll. */
118 Lisp_Object Vother_window_scroll_buffer
;
120 /* Non-nil means it's function to call to display temp buffers. */
122 Lisp_Object Vtemp_buffer_show_function
;
124 /* Non-zero means line and page scrolling on tall lines (with images)
125 does partial scrolling by modifying window-vscroll. */
127 int auto_window_vscroll_p
;
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 /* Non-nil means scroll commands try to put point
210 at the same screen height as previously. */
212 Lisp_Object Vscroll_preserve_screen_position
;
214 /* Incremented by 1 whenever a window is deleted. */
216 int window_deletion_count
;
218 /* Used by the function window_scroll_pixel_based */
220 static int window_scroll_pixel_based_preserve_y
;
222 #if 0 /* This isn't used anywhere. */
223 /* Nonzero means we can split a frame even if it is "unsplittable". */
224 static int inhibit_frame_unsplittable
;
227 extern EMACS_INT scroll_margin
;
229 extern Lisp_Object Qwindow_scroll_functions
, Vwindow_scroll_functions
;
231 DEFUN ("windowp", Fwindowp
, Swindowp
, 1, 1, 0,
232 doc
: /* Returns t if OBJECT is a window. */)
236 return WINDOWP (object
) ? Qt
: Qnil
;
239 DEFUN ("window-live-p", Fwindow_live_p
, Swindow_live_p
, 1, 1, 0,
240 doc
: /* Returns t if OBJECT is a window which is currently visible. */)
244 return WINDOW_LIVE_P (object
) ? Qt
: Qnil
;
251 register struct window
*p
;
253 p
= allocate_window ();
255 XSETFASTINT (p
->sequence_number
, sequence_number
);
256 XSETFASTINT (p
->left_col
, 0);
257 XSETFASTINT (p
->top_line
, 0);
258 XSETFASTINT (p
->total_lines
, 0);
259 XSETFASTINT (p
->total_cols
, 0);
260 XSETFASTINT (p
->hscroll
, 0);
261 XSETFASTINT (p
->min_hscroll
, 0);
262 p
->orig_top_line
= p
->orig_total_lines
= Qnil
;
263 p
->start
= Fmake_marker ();
264 p
->pointm
= Fmake_marker ();
265 XSETFASTINT (p
->use_time
, 0);
267 p
->display_table
= Qnil
;
269 p
->pseudo_window_p
= 0;
270 bzero (&p
->cursor
, sizeof (p
->cursor
));
271 bzero (&p
->last_cursor
, sizeof (p
->last_cursor
));
272 bzero (&p
->phys_cursor
, sizeof (p
->phys_cursor
));
273 p
->desired_matrix
= p
->current_matrix
= 0;
274 p
->nrows_scale_factor
= p
->ncols_scale_factor
= 1;
275 p
->phys_cursor_type
= -1;
276 p
->phys_cursor_width
= -1;
277 p
->must_be_updated_p
= 0;
278 XSETFASTINT (p
->window_end_vpos
, 0);
279 XSETFASTINT (p
->window_end_pos
, 0);
280 p
->window_end_valid
= Qnil
;
283 XSETFASTINT (p
->last_point
, 0);
284 p
->frozen_window_start_p
= 0;
285 p
->last_cursor_off_p
= p
->cursor_off_p
= 0;
286 p
->left_margin_cols
= Qnil
;
287 p
->right_margin_cols
= Qnil
;
288 p
->left_fringe_width
= Qnil
;
289 p
->right_fringe_width
= Qnil
;
290 p
->fringes_outside_margins
= Qnil
;
291 p
->scroll_bar_width
= Qnil
;
292 p
->vertical_scroll_bar_type
= Qt
;
298 DEFUN ("selected-window", Fselected_window
, Sselected_window
, 0, 0, 0,
299 doc
: /* Return the window that the cursor now appears in and commands apply to. */)
302 return selected_window
;
305 DEFUN ("minibuffer-window", Fminibuffer_window
, Sminibuffer_window
, 0, 1, 0,
306 doc
: /* Return the window used now for minibuffers.
307 If the optional argument FRAME is specified, return the minibuffer window
308 used by that frame. */)
313 frame
= selected_frame
;
314 CHECK_LIVE_FRAME (frame
);
315 return FRAME_MINIBUF_WINDOW (XFRAME (frame
));
318 DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p
, Swindow_minibuffer_p
, 0, 1, 0,
319 doc
: /* Returns non-nil if WINDOW is a minibuffer window.
320 WINDOW defaults to the selected window. */)
324 struct window
*w
= decode_window (window
);
325 return MINI_WINDOW_P (w
) ? Qt
: Qnil
;
329 DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p
,
330 Spos_visible_in_window_p
, 0, 3, 0,
331 doc
: /* Return non-nil if position POS is currently on the frame in WINDOW.
332 Return nil if that position is scrolled vertically out of view.
333 If a character is only partially visible, nil is returned, unless the
334 optional argument PARTIALLY is non-nil.
335 If POS is only out of view because of horizontal scrolling, return non-nil.
336 POS defaults to point in WINDOW; WINDOW defaults to the selected window.
338 If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil,
339 return value is a list (X Y PARTIAL) where X and Y are the pixel coordinates
340 relative to the top left corner of the window. PARTIAL is nil if the character
341 after POS is fully visible; otherwise it is a cons (RTOP . RBOT) where RTOP
342 and RBOT are the number of pixels invisible at the top and bottom of the row. */)
343 (pos
, window
, partially
)
344 Lisp_Object pos
, window
, partially
;
346 register struct window
*w
;
348 register struct buffer
*buf
;
350 Lisp_Object in_window
= Qnil
;
351 int rtop
, rbot
, fully_p
= 1;
354 w
= decode_window (window
);
355 buf
= XBUFFER (w
->buffer
);
356 SET_TEXT_POS_FROM_MARKER (top
, w
->start
);
360 CHECK_NUMBER_COERCE_MARKER (pos
);
363 else if (w
== XWINDOW (selected_window
))
366 posint
= XMARKER (w
->pointm
)->charpos
;
368 /* If position is above window start or outside buffer boundaries,
369 or if window start is out of range, position is not visible. */
370 if (posint
>= CHARPOS (top
)
371 && posint
<= BUF_ZV (buf
)
372 && CHARPOS (top
) >= BUF_BEGV (buf
)
373 && CHARPOS (top
) <= BUF_ZV (buf
)
374 && pos_visible_p (w
, posint
, &x
, &y
, &rtop
, &rbot
, NILP (partially
))
375 && (fully_p
= !rtop
&& !rbot
, (!NILP (partially
) || fully_p
)))
378 if (!NILP (in_window
) && !NILP (partially
))
379 in_window
= Fcons (make_number (x
),
380 Fcons (make_number (y
),
381 Fcons ((fully_p
? Qnil
382 : Fcons (make_number (rtop
),
383 make_number (rbot
))),
389 static struct window
*
390 decode_window (window
)
391 register Lisp_Object window
;
394 return XWINDOW (selected_window
);
396 CHECK_LIVE_WINDOW (window
);
397 return XWINDOW (window
);
400 static struct window
*
401 decode_any_window (window
)
402 register Lisp_Object window
;
405 return XWINDOW (selected_window
);
407 CHECK_WINDOW (window
);
408 return XWINDOW (window
);
411 DEFUN ("window-buffer", Fwindow_buffer
, Swindow_buffer
, 0, 1, 0,
412 doc
: /* Return the buffer that WINDOW is displaying.
413 WINDOW defaults to the selected window. */)
417 return decode_window (window
)->buffer
;
420 DEFUN ("window-height", Fwindow_height
, Swindow_height
, 0, 1, 0,
421 doc
: /* Return the number of lines in WINDOW (including its mode line). */)
425 return decode_any_window (window
)->total_lines
;
428 DEFUN ("window-width", Fwindow_width
, Swindow_width
, 0, 1, 0,
429 doc
: /* Return the number of display columns in WINDOW.
430 This is the width that is usable columns available for text in WINDOW.
431 If you want to find out how many columns WINDOW takes up,
432 use (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */)
436 return make_number (window_box_text_cols (decode_any_window (window
)));
439 DEFUN ("window-hscroll", Fwindow_hscroll
, Swindow_hscroll
, 0, 1, 0,
440 doc
: /* Return the number of columns by which WINDOW is scrolled from left margin. */)
444 return decode_window (window
)->hscroll
;
447 DEFUN ("set-window-hscroll", Fset_window_hscroll
, Sset_window_hscroll
, 2, 2, 0,
448 doc
: /* Set number of columns WINDOW is scrolled from left margin to NCOL.
449 Return NCOL. NCOL should be zero or positive.
451 Note that if `automatic-hscrolling' is non-nil, you cannot scroll the
452 window so that the location of point becomes invisible. */)
454 Lisp_Object window
, ncol
;
456 struct window
*w
= decode_window (window
);
460 hscroll
= max (0, XINT (ncol
));
462 /* Prevent redisplay shortcuts when changing the hscroll. */
463 if (XINT (w
->hscroll
) != hscroll
)
464 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
466 w
->hscroll
= make_number (hscroll
);
470 DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger
,
471 Swindow_redisplay_end_trigger
, 0, 1, 0,
472 doc
: /* Return WINDOW's redisplay end trigger value.
473 See `set-window-redisplay-end-trigger' for more information. */)
477 return decode_window (window
)->redisplay_end_trigger
;
480 DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger
,
481 Sset_window_redisplay_end_trigger
, 2, 2, 0,
482 doc
: /* Set WINDOW's redisplay end trigger value to VALUE.
483 VALUE should be a buffer position (typically a marker) or nil.
484 If it is a buffer position, then if redisplay in WINDOW reaches a position
485 beyond VALUE, the functions in `redisplay-end-trigger-functions' are called
486 with two arguments: WINDOW, and the end trigger value.
487 Afterwards the end-trigger value is reset to nil. */)
489 register Lisp_Object window
, value
;
491 register struct window
*w
;
493 w
= decode_window (window
);
494 w
->redisplay_end_trigger
= value
;
498 DEFUN ("window-edges", Fwindow_edges
, Swindow_edges
, 0, 1, 0,
499 doc
: /* Return a list of the edge coordinates of WINDOW.
500 \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
501 RIGHT is one more than the rightmost column occupied by WINDOW,
502 and BOTTOM is one more than the bottommost row occupied by WINDOW.
503 The edges include the space used by the window's scroll bar,
504 display margins, fringes, header line, and mode line, if it has them.
505 To get the edges of the actual text area, use `window-inside-edges'. */)
509 register struct window
*w
= decode_any_window (window
);
511 return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w
)),
512 Fcons (make_number (WINDOW_TOP_EDGE_LINE (w
)),
513 Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w
)),
514 Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w
)),
518 DEFUN ("window-pixel-edges", Fwindow_pixel_edges
, Swindow_pixel_edges
, 0, 1, 0,
519 doc
: /* Return a list of the edge pixel coordinates of WINDOW.
520 \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
521 RIGHT is one more than the rightmost x position occupied by WINDOW,
522 and BOTTOM is one more than the bottommost y position occupied by WINDOW.
523 The pixel edges include the space used by the window's scroll bar,
524 display margins, fringes, header line, and mode line, if it has them.
525 To get the edges of the actual text area, use `window-inside-pixel-edges'. */)
529 register struct window
*w
= decode_any_window (window
);
531 return Fcons (make_number (WINDOW_LEFT_EDGE_X (w
)),
532 Fcons (make_number (WINDOW_TOP_EDGE_Y (w
)),
533 Fcons (make_number (WINDOW_RIGHT_EDGE_X (w
)),
534 Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w
)),
538 DEFUN ("window-inside-edges", Fwindow_inside_edges
, Swindow_inside_edges
, 0, 1, 0,
539 doc
: /* Return a list of the edge coordinates of WINDOW.
540 \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
541 RIGHT is one more than the rightmost column used by text in WINDOW,
542 and BOTTOM is one more than the bottommost row used by text in WINDOW.
543 The inside edges do not include the space used by the window's scroll bar,
544 display margins, fringes, header line, and/or mode line. */)
548 register struct window
*w
= decode_any_window (window
);
550 return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w
)
551 + WINDOW_LEFT_MARGIN_COLS (w
)
552 + WINDOW_LEFT_FRINGE_COLS (w
)),
553 make_number (WINDOW_TOP_EDGE_LINE (w
)
554 + WINDOW_HEADER_LINE_LINES (w
)),
555 make_number (WINDOW_BOX_RIGHT_EDGE_COL (w
)
556 - WINDOW_RIGHT_MARGIN_COLS (w
)
557 - WINDOW_RIGHT_FRINGE_COLS (w
)),
558 make_number (WINDOW_BOTTOM_EDGE_LINE (w
)
559 - WINDOW_MODE_LINE_LINES (w
)));
562 DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges
, Swindow_inside_pixel_edges
, 0, 1, 0,
563 doc
: /* Return a list of the edge pixel coordinates of WINDOW.
564 \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
565 RIGHT is one more than the rightmost x position used by text in WINDOW,
566 and BOTTOM is one more than the bottommost y position used by text in WINDOW.
567 The inside edges do not include the space used by the window's scroll bar,
568 display margins, fringes, header line, and/or mode line. */)
572 register struct window
*w
= decode_any_window (window
);
574 return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w
)
575 + WINDOW_LEFT_MARGIN_WIDTH (w
)
576 + WINDOW_LEFT_FRINGE_WIDTH (w
)),
577 make_number (WINDOW_TOP_EDGE_Y (w
)
578 + WINDOW_HEADER_LINE_HEIGHT (w
)),
579 make_number (WINDOW_BOX_RIGHT_EDGE_X (w
)
580 - WINDOW_RIGHT_MARGIN_WIDTH (w
)
581 - WINDOW_RIGHT_FRINGE_WIDTH (w
)),
582 make_number (WINDOW_BOTTOM_EDGE_Y (w
)
583 - WINDOW_MODE_LINE_HEIGHT (w
)));
586 /* Test if the character at column *X, row *Y is within window W.
587 If it is not, return ON_NOTHING;
588 if it is in the window's text area,
589 set *x and *y to its location relative to the upper left corner
592 if it is on the window's modeline, return ON_MODE_LINE;
593 if it is on the border between the window and its right sibling,
594 return ON_VERTICAL_BORDER.
595 if it is on a scroll bar,
596 return ON_SCROLL_BAR.
597 if it is on the window's top line, return ON_HEADER_LINE;
598 if it is in left or right fringe of the window,
599 return ON_LEFT_FRINGE or ON_RIGHT_FRINGE, and convert *X and *Y
600 to window-relative coordinates;
601 if it is in the marginal area to the left/right of the window,
602 return ON_LEFT_MARGIN or ON_RIGHT_MARGIN, and convert *X and *Y
603 to window-relative coordinates.
605 X and Y are frame relative pixel coordinates. */
607 static enum window_part
608 coordinates_in_window (w
, x
, y
)
609 register struct window
*w
;
612 struct frame
*f
= XFRAME (WINDOW_FRAME (w
));
613 int left_x
, right_x
, top_y
, bottom_y
;
614 enum window_part part
;
615 int ux
= FRAME_COLUMN_WIDTH (f
);
616 int x0
= WINDOW_LEFT_EDGE_X (w
);
617 int x1
= WINDOW_RIGHT_EDGE_X (w
);
618 /* The width of the area where the vertical line can be dragged.
619 (Between mode lines for instance. */
620 int grabbable_width
= ux
;
621 int lmargin_width
, rmargin_width
, text_left
, text_right
;
623 /* In what's below, we subtract 1 when computing right_x because we
624 want the rightmost pixel, which is given by left_pixel+width-1. */
625 if (w
->pseudo_window_p
)
628 right_x
= WINDOW_TOTAL_WIDTH (w
) - 1;
629 top_y
= WINDOW_TOP_EDGE_Y (w
);
630 bottom_y
= WINDOW_BOTTOM_EDGE_Y (w
);
634 left_x
= WINDOW_BOX_LEFT_EDGE_X (w
);
635 right_x
= WINDOW_BOX_RIGHT_EDGE_X (w
) - 1;
636 top_y
= WINDOW_TOP_EDGE_Y (w
);
637 bottom_y
= WINDOW_BOTTOM_EDGE_Y (w
);
640 /* Outside any interesting row? */
641 if (*y
< top_y
|| *y
>= bottom_y
)
644 /* On the mode line or header line? If it's near the start of
645 the mode or header line of window that's has a horizontal
646 sibling, say it's on the vertical line. That's to be able
647 to resize windows horizontally in case we're using toolkit
650 if (WINDOW_WANTS_MODELINE_P (w
)
651 && *y
>= bottom_y
- CURRENT_MODE_LINE_HEIGHT (w
))
655 header_vertical_border_check
:
656 /* We're somewhere on the mode line. We consider the place
657 between mode lines of horizontally adjacent mode lines
658 as the vertical border. If scroll bars on the left,
659 return the right window. */
660 if (WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w
)
661 || WINDOW_RIGHTMOST_P (w
))
663 if (!WINDOW_LEFTMOST_P (w
) && abs (*x
- x0
) < grabbable_width
)
665 /* Convert X and Y to window relative coordinates.
666 Vertical border is at the left edge of window. */
667 *x
= max (0, *x
- x0
);
669 return ON_VERTICAL_BORDER
;
674 if (abs (*x
- x1
) < grabbable_width
)
676 /* Convert X and Y to window relative coordinates.
677 Vertical border is at the right edge of window. */
678 *x
= min (x1
, *x
) - x0
;
680 return ON_VERTICAL_BORDER
;
684 if (*x
< x0
|| *x
>= x1
)
687 /* Convert X and Y to window relative coordinates.
688 Mode line starts at left edge of window. */
694 if (WINDOW_WANTS_HEADER_LINE_P (w
)
695 && *y
< top_y
+ CURRENT_HEADER_LINE_HEIGHT (w
))
697 part
= ON_HEADER_LINE
;
698 goto header_vertical_border_check
;
701 if (*x
< x0
|| *x
>= x1
)
704 /* Outside any interesting column? */
705 if (*x
< left_x
|| *x
> right_x
)
708 return ON_SCROLL_BAR
;
711 lmargin_width
= window_box_width (w
, LEFT_MARGIN_AREA
);
712 rmargin_width
= window_box_width (w
, RIGHT_MARGIN_AREA
);
714 text_left
= window_box_left (w
, TEXT_AREA
);
715 text_right
= text_left
+ window_box_width (w
, TEXT_AREA
);
717 if (FRAME_WINDOW_P (f
))
719 if (!w
->pseudo_window_p
720 && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w
)
721 && !WINDOW_RIGHTMOST_P (w
)
722 && (abs (*x
- right_x
) < grabbable_width
))
724 /* Convert X and Y to window relative coordinates.
725 Vertical border is at the right edge of window. */
726 *x
= min (right_x
, *x
) - left_x
;
728 return ON_VERTICAL_BORDER
;
733 /* Need to say "*x > right_x" rather than >=, since on character
734 terminals, the vertical line's x coordinate is right_x. */
735 if (!w
->pseudo_window_p
736 && !WINDOW_RIGHTMOST_P (w
)
737 && *x
> right_x
- ux
)
739 /* On the border on the right side of the window? Assume that
740 this area begins at RIGHT_X minus a canonical char width. */
741 *x
= min (right_x
, *x
) - left_x
;
743 return ON_VERTICAL_BORDER
;
749 if (lmargin_width
> 0
750 && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
)
751 ? (*x
>= left_x
+ WINDOW_LEFT_FRINGE_WIDTH (w
))
752 : (*x
< left_x
+ lmargin_width
)))
755 if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
))
756 *x
-= WINDOW_LEFT_FRINGE_WIDTH (w
);
758 return ON_LEFT_MARGIN
;
761 /* Convert X and Y to window-relative pixel coordinates. */
764 return ON_LEFT_FRINGE
;
767 if (*x
>= text_right
)
769 if (rmargin_width
> 0
770 && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
)
771 ? (*x
< right_x
- WINDOW_RIGHT_FRINGE_WIDTH (w
))
772 : (*x
>= right_x
- rmargin_width
)))
774 *x
-= right_x
- rmargin_width
;
775 if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
))
776 *x
+= WINDOW_RIGHT_FRINGE_WIDTH (w
);
778 return ON_RIGHT_MARGIN
;
781 /* Convert X and Y to window-relative pixel coordinates. */
782 *x
-= left_x
+ WINDOW_LEFT_FRINGE_WIDTH (w
);
784 return ON_RIGHT_FRINGE
;
787 /* Everything special ruled out - must be on text area */
794 DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p
,
795 Scoordinates_in_window_p
, 2, 2, 0,
796 doc
: /* Return non-nil if COORDINATES are in WINDOW.
797 COORDINATES is a cons of the form (X . Y), X and Y being distances
798 measured in characters from the upper-left corner of the frame.
799 \(0 . 0) denotes the character in the upper left corner of the
801 If COORDINATES are in the text portion of WINDOW,
802 the coordinates relative to the window are returned.
803 If they are in the mode line of WINDOW, `mode-line' is returned.
804 If they are in the top mode line of WINDOW, `header-line' is returned.
805 If they are in the left fringe of WINDOW, `left-fringe' is returned.
806 If they are in the right fringe of WINDOW, `right-fringe' is returned.
807 If they are on the border between WINDOW and its right sibling,
808 `vertical-line' is returned.
809 If they are in the windows's left or right marginal areas, `left-margin'\n\
810 or `right-margin' is returned. */)
811 (coordinates
, window
)
812 register Lisp_Object coordinates
, window
;
819 CHECK_WINDOW (window
);
820 w
= XWINDOW (window
);
821 f
= XFRAME (w
->frame
);
822 CHECK_CONS (coordinates
);
823 lx
= Fcar (coordinates
);
824 ly
= Fcdr (coordinates
);
825 CHECK_NUMBER_OR_FLOAT (lx
);
826 CHECK_NUMBER_OR_FLOAT (ly
);
827 x
= FRAME_PIXEL_X_FROM_CANON_X (f
, lx
) + FRAME_INTERNAL_BORDER_WIDTH (f
);
828 y
= FRAME_PIXEL_Y_FROM_CANON_Y (f
, ly
) + FRAME_INTERNAL_BORDER_WIDTH (f
);
830 switch (coordinates_in_window (w
, &x
, &y
))
836 /* X and Y are now window relative pixel coordinates. Convert
837 them to canonical char units before returning them. */
838 return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f
, x
),
839 FRAME_CANON_Y_FROM_PIXEL_Y (f
, y
));
844 case ON_VERTICAL_BORDER
:
845 return Qvertical_line
;
853 case ON_RIGHT_FRINGE
:
854 return Qright_fringe
;
859 case ON_RIGHT_MARGIN
:
860 return Qright_margin
;
863 /* Historically we are supposed to return nil in this case. */
872 /* Callback for foreach_window, used in window_from_coordinates.
873 Check if window W contains coordinates specified by USER_DATA which
874 is actually a pointer to a struct check_window_data CW.
876 Check if window W contains coordinates *CW->x and *CW->y. If it
877 does, return W in *CW->window, as Lisp_Object, and return in
878 *CW->part the part of the window under coordinates *X,*Y. Return
879 zero from this function to stop iterating over windows. */
881 struct check_window_data
885 enum window_part
*part
;
889 check_window_containing (w
, user_data
)
893 struct check_window_data
*cw
= (struct check_window_data
*) user_data
;
894 enum window_part found
;
897 found
= coordinates_in_window (w
, cw
->x
, cw
->y
);
898 if (found
!= ON_NOTHING
)
901 XSETWINDOW (*cw
->window
, w
);
909 /* Find the window containing frame-relative pixel position X/Y and
910 return it as a Lisp_Object.
912 If X, Y is on one of the window's special `window_part' elements,
913 set *PART to the id of that element, and return X and Y converted
914 to window relative coordinates in WX and WY.
916 If there is no window under X, Y return nil and leave *PART
917 unmodified. TOOL_BAR_P non-zero means detect tool-bar windows.
919 This function was previously implemented with a loop cycling over
920 windows with Fnext_window, and starting with the frame's selected
921 window. It turned out that this doesn't work with an
922 implementation of next_window using Vwindow_list, because
923 FRAME_SELECTED_WINDOW (F) is not always contained in the window
924 tree of F when this function is called asynchronously from
925 note_mouse_highlight. The original loop didn't terminate in this
929 window_from_coordinates (f
, x
, y
, part
, wx
, wy
, tool_bar_p
)
932 enum window_part
*part
;
937 struct check_window_data cw
;
938 enum window_part dummy
;
944 cw
.window
= &window
, cw
.x
= &x
, cw
.y
= &y
; cw
.part
= part
;
945 foreach_window (f
, check_window_containing
, &cw
);
947 /* If not found above, see if it's in the tool bar window, if a tool
951 && WINDOWP (f
->tool_bar_window
)
952 && WINDOW_TOTAL_LINES (XWINDOW (f
->tool_bar_window
)) > 0
953 && (coordinates_in_window (XWINDOW (f
->tool_bar_window
), &x
, &y
)
957 window
= f
->tool_bar_window
;
966 DEFUN ("window-at", Fwindow_at
, Swindow_at
, 2, 3, 0,
967 doc
: /* Return window containing coordinates X and Y on FRAME.
968 If omitted, FRAME defaults to the currently selected frame.
969 The top left corner of the frame is considered to be row 0,
972 Lisp_Object x
, y
, frame
;
977 frame
= selected_frame
;
978 CHECK_LIVE_FRAME (frame
);
981 /* Check that arguments are integers or floats. */
982 CHECK_NUMBER_OR_FLOAT (x
);
983 CHECK_NUMBER_OR_FLOAT (y
);
985 return window_from_coordinates (f
,
986 (FRAME_PIXEL_X_FROM_CANON_X (f
, x
)
987 + FRAME_INTERNAL_BORDER_WIDTH (f
)),
988 (FRAME_PIXEL_Y_FROM_CANON_Y (f
, y
)
989 + FRAME_INTERNAL_BORDER_WIDTH (f
)),
993 DEFUN ("window-point", Fwindow_point
, Swindow_point
, 0, 1, 0,
994 doc
: /* Return current value of point in WINDOW.
995 For a nonselected window, this is the value point would have
996 if that window were selected.
998 Note that, when WINDOW is the selected window and its buffer
999 is also currently selected, the value returned is the same as (point).
1000 It would be more strictly correct to return the `top-level' value
1001 of point, outside of any save-excursion forms.
1002 But that is hard to define. */)
1006 register struct window
*w
= decode_window (window
);
1008 if (w
== XWINDOW (selected_window
)
1009 && current_buffer
== XBUFFER (w
->buffer
))
1011 return Fmarker_position (w
->pointm
);
1014 DEFUN ("window-start", Fwindow_start
, Swindow_start
, 0, 1, 0,
1015 doc
: /* Return position at which display currently starts in WINDOW.
1016 This is updated by redisplay or by calling `set-window-start'. */)
1020 return Fmarker_position (decode_window (window
)->start
);
1023 /* This is text temporarily removed from the doc string below.
1025 This function returns nil if the position is not currently known.
1026 That happens when redisplay is preempted and doesn't finish.
1027 If in that case you want to compute where the end of the window would
1028 have been if redisplay had finished, do this:
1030 (goto-char (window-start window))
1031 (vertical-motion (1- (window-height window)) window)
1034 DEFUN ("window-end", Fwindow_end
, Swindow_end
, 0, 2, 0,
1035 doc
: /* Return position at which display currently ends in WINDOW.
1036 This is updated by redisplay, when it runs to completion.
1037 Simply changing the buffer text or setting `window-start'
1038 does not update this value.
1039 Return nil if there is no recorded value. \(This can happen if the
1040 last redisplay of WINDOW was preempted, and did not finish.)
1041 If UPDATE is non-nil, compute the up-to-date position
1042 if it isn't already recorded. */)
1044 Lisp_Object window
, update
;
1047 struct window
*w
= decode_window (window
);
1053 #if 0 /* This change broke some things. We should make it later. */
1054 /* If we don't know the end position, return nil.
1055 The user can compute it with vertical-motion if he wants to.
1056 It would be nicer to do it automatically,
1057 but that's so slow that it would probably bother people. */
1058 if (NILP (w
->window_end_valid
))
1063 && ! (! NILP (w
->window_end_valid
)
1064 && XFASTINT (w
->last_modified
) >= MODIFF
)
1067 struct text_pos startp
;
1069 struct buffer
*old_buffer
= NULL
, *b
= XBUFFER (buf
);
1071 /* In case W->start is out of the range, use something
1072 reasonable. This situation occurred when loading a file with
1073 `-l' containing a call to `rmail' with subsequent other
1074 commands. At the end, W->start happened to be BEG, while
1075 rmail had already narrowed the buffer. */
1076 if (XMARKER (w
->start
)->charpos
< BEGV
)
1077 SET_TEXT_POS (startp
, BEGV
, BEGV_BYTE
);
1078 else if (XMARKER (w
->start
)->charpos
> ZV
)
1079 SET_TEXT_POS (startp
, ZV
, ZV_BYTE
);
1081 SET_TEXT_POS_FROM_MARKER (startp
, w
->start
);
1083 /* Cannot use Fvertical_motion because that function doesn't
1084 cope with variable-height lines. */
1085 if (b
!= current_buffer
)
1087 old_buffer
= current_buffer
;
1088 set_buffer_internal (b
);
1091 start_display (&it
, w
, startp
);
1092 move_it_vertically (&it
, window_box_height (w
));
1093 if (it
.current_y
< it
.last_visible_y
)
1094 move_it_past_eol (&it
);
1095 value
= make_number (IT_CHARPOS (it
));
1098 set_buffer_internal (old_buffer
);
1101 XSETINT (value
, BUF_Z (XBUFFER (buf
)) - XFASTINT (w
->window_end_pos
));
1106 DEFUN ("set-window-point", Fset_window_point
, Sset_window_point
, 2, 2, 0,
1107 doc
: /* Make point value in WINDOW be at position POS in WINDOW's buffer.
1110 Lisp_Object window
, pos
;
1112 register struct window
*w
= decode_window (window
);
1114 CHECK_NUMBER_COERCE_MARKER (pos
);
1115 if (w
== XWINDOW (selected_window
)
1116 && XBUFFER (w
->buffer
) == current_buffer
)
1119 set_marker_restricted (w
->pointm
, pos
, w
->buffer
);
1121 /* We have to make sure that redisplay updates the window to show
1122 the new value of point. */
1123 if (!EQ (window
, selected_window
))
1124 ++windows_or_buffers_changed
;
1129 DEFUN ("set-window-start", Fset_window_start
, Sset_window_start
, 2, 3, 0,
1130 doc
: /* Make display in WINDOW start at position POS in WINDOW's buffer.
1132 Optional third arg NOFORCE non-nil inhibits next redisplay
1133 from overriding motion of point in order to display at this exact start. */)
1134 (window
, pos
, noforce
)
1135 Lisp_Object window
, pos
, noforce
;
1137 register struct window
*w
= decode_window (window
);
1139 CHECK_NUMBER_COERCE_MARKER (pos
);
1140 set_marker_restricted (w
->start
, pos
, w
->buffer
);
1141 /* this is not right, but much easier than doing what is right. */
1142 w
->start_at_line_beg
= Qnil
;
1144 w
->force_start
= Qt
;
1145 w
->update_mode_line
= Qt
;
1146 XSETFASTINT (w
->last_modified
, 0);
1147 XSETFASTINT (w
->last_overlay_modified
, 0);
1148 if (!EQ (window
, selected_window
))
1149 windows_or_buffers_changed
++;
1154 DEFUN ("window-dedicated-p", Fwindow_dedicated_p
, Swindow_dedicated_p
,
1156 doc
: /* Return WINDOW's dedicated object, usually t or nil.
1157 See also `set-window-dedicated-p'. */)
1161 return decode_window (window
)->dedicated
;
1164 DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p
,
1165 Sset_window_dedicated_p
, 2, 2, 0,
1166 doc
: /* Control whether WINDOW is dedicated to the buffer it displays.
1167 If it is dedicated, Emacs will not automatically change
1168 which buffer appears in it.
1169 The second argument is the new value for the dedication flag;
1170 non-nil means yes. */)
1172 Lisp_Object window
, arg
;
1174 register struct window
*w
= decode_window (window
);
1178 return w
->dedicated
;
1181 DEFUN ("window-display-table", Fwindow_display_table
, Swindow_display_table
,
1183 doc
: /* Return the display-table that WINDOW is using. */)
1187 return decode_window (window
)->display_table
;
1190 /* Get the display table for use on window W. This is either W's
1191 display table or W's buffer's display table. Ignore the specified
1192 tables if they are not valid; if no valid table is specified,
1195 struct Lisp_Char_Table
*
1196 window_display_table (w
)
1199 struct Lisp_Char_Table
*dp
= NULL
;
1201 if (DISP_TABLE_P (w
->display_table
))
1202 dp
= XCHAR_TABLE (w
->display_table
);
1203 else if (BUFFERP (w
->buffer
))
1205 struct buffer
*b
= XBUFFER (w
->buffer
);
1207 if (DISP_TABLE_P (b
->display_table
))
1208 dp
= XCHAR_TABLE (b
->display_table
);
1209 else if (DISP_TABLE_P (Vstandard_display_table
))
1210 dp
= XCHAR_TABLE (Vstandard_display_table
);
1216 DEFUN ("set-window-display-table", Fset_window_display_table
, Sset_window_display_table
, 2, 2, 0,
1217 doc
: /* Set WINDOW's display-table to TABLE. */)
1219 register Lisp_Object window
, table
;
1221 register struct window
*w
;
1223 w
= decode_window (window
);
1224 w
->display_table
= table
;
1228 /* Record info on buffer window w is displaying
1229 when it is about to cease to display that buffer. */
1232 register struct window
*w
;
1239 if (b
!= XMARKER (w
->pointm
)->buffer
)
1243 if (w
== XWINDOW (selected_window
)
1244 || ! EQ (buf
, XWINDOW (selected_window
)->buffer
))
1245 /* Do this except when the selected window's buffer
1246 is being removed from some other window. */
1248 /* last_window_start records the start position that this buffer
1249 had in the last window to be disconnected from it.
1250 Now that this statement is unconditional,
1251 it is possible for the buffer to be displayed in the
1252 selected window, while last_window_start reflects another
1253 window which was recently showing the same buffer.
1254 Some people might say that might be a good thing. Let's see. */
1255 b
->last_window_start
= marker_position (w
->start
);
1257 /* Point in the selected window's buffer
1258 is actually stored in that buffer, and the window's pointm isn't used.
1259 So don't clobber point in that buffer. */
1260 if (! EQ (buf
, XWINDOW (selected_window
)->buffer
)
1261 /* This line helps to fix Horsley's testbug.el bug. */
1262 && !(WINDOWP (b
->last_selected_window
)
1263 && w
!= XWINDOW (b
->last_selected_window
)
1264 && EQ (buf
, XWINDOW (b
->last_selected_window
)->buffer
)))
1265 temp_set_point_both (b
,
1266 clip_to_bounds (BUF_BEGV (b
),
1267 XMARKER (w
->pointm
)->charpos
,
1269 clip_to_bounds (BUF_BEGV_BYTE (b
),
1270 marker_byte_position (w
->pointm
),
1273 if (WINDOWP (b
->last_selected_window
)
1274 && w
== XWINDOW (b
->last_selected_window
))
1275 b
->last_selected_window
= Qnil
;
1278 /* Put replacement into the window structure in place of old. */
1280 replace_window (old
, replacement
)
1281 Lisp_Object old
, replacement
;
1283 register Lisp_Object tem
;
1284 register struct window
*o
= XWINDOW (old
), *p
= XWINDOW (replacement
);
1286 /* If OLD is its frame's root_window, then replacement is the new
1287 root_window for that frame. */
1289 if (EQ (old
, FRAME_ROOT_WINDOW (XFRAME (o
->frame
))))
1290 FRAME_ROOT_WINDOW (XFRAME (o
->frame
)) = replacement
;
1292 p
->left_col
= o
->left_col
;
1293 p
->top_line
= o
->top_line
;
1294 p
->total_cols
= o
->total_cols
;
1295 p
->total_lines
= o
->total_lines
;
1296 p
->desired_matrix
= p
->current_matrix
= 0;
1298 bzero (&p
->cursor
, sizeof (p
->cursor
));
1299 bzero (&p
->last_cursor
, sizeof (p
->last_cursor
));
1300 bzero (&p
->phys_cursor
, sizeof (p
->phys_cursor
));
1301 p
->phys_cursor_type
= -1;
1302 p
->phys_cursor_width
= -1;
1303 p
->must_be_updated_p
= 0;
1304 p
->pseudo_window_p
= 0;
1305 XSETFASTINT (p
->window_end_vpos
, 0);
1306 XSETFASTINT (p
->window_end_pos
, 0);
1307 p
->window_end_valid
= Qnil
;
1308 p
->frozen_window_start_p
= 0;
1309 p
->orig_top_line
= p
->orig_total_lines
= Qnil
;
1311 p
->next
= tem
= o
->next
;
1313 XWINDOW (tem
)->prev
= replacement
;
1315 p
->prev
= tem
= o
->prev
;
1317 XWINDOW (tem
)->next
= replacement
;
1319 p
->parent
= tem
= o
->parent
;
1322 if (EQ (XWINDOW (tem
)->vchild
, old
))
1323 XWINDOW (tem
)->vchild
= replacement
;
1324 if (EQ (XWINDOW (tem
)->hchild
, old
))
1325 XWINDOW (tem
)->hchild
= replacement
;
1328 /*** Here, if replacement is a vertical combination
1329 and so is its new parent, we should make replacement's
1330 children be children of that parent instead. ***/
1333 DEFUN ("delete-window", Fdelete_window
, Sdelete_window
, 0, 1, "",
1334 doc
: /* Remove WINDOW from the display. Default is selected window. */)
1336 register Lisp_Object window
;
1338 delete_window (window
);
1340 if (! NILP (Vwindow_configuration_change_hook
)
1341 && ! NILP (Vrun_hooks
))
1342 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
1348 delete_window (window
)
1349 register Lisp_Object window
;
1351 register Lisp_Object tem
, parent
, sib
;
1352 register struct window
*p
;
1353 register struct window
*par
;
1356 /* Because this function is called by other C code on non-leaf
1357 windows, the CHECK_LIVE_WINDOW macro would choke inappropriately,
1358 so we can't decode_window here. */
1360 window
= selected_window
;
1362 CHECK_WINDOW (window
);
1363 p
= XWINDOW (window
);
1365 /* It's a no-op to delete an already-deleted window. */
1366 if (NILP (p
->buffer
)
1368 && NILP (p
->vchild
))
1373 error ("Attempt to delete minibuffer or sole ordinary window");
1374 par
= XWINDOW (parent
);
1376 windows_or_buffers_changed
++;
1377 Vwindow_list
= Qnil
;
1378 f
= XFRAME (WINDOW_FRAME (p
));
1379 FRAME_WINDOW_SIZES_CHANGED (f
) = 1;
1381 /* Are we trying to delete any frame's selected window? */
1383 Lisp_Object swindow
, pwindow
;
1385 /* See if the frame's selected window is either WINDOW
1386 or any subwindow of it, by finding all that window's parents
1387 and comparing each one with WINDOW. */
1388 swindow
= FRAME_SELECTED_WINDOW (f
);
1393 while (!NILP (pwindow
))
1395 if (EQ (window
, pwindow
))
1397 pwindow
= XWINDOW (pwindow
)->parent
;
1400 /* If the window being deleted is not a parent of SWINDOW,
1401 then SWINDOW is ok as the new selected window. */
1402 if (!EQ (window
, pwindow
))
1404 /* Otherwise, try another window for SWINDOW. */
1405 swindow
= Fnext_window (swindow
, Qlambda
, Qnil
);;
1407 /* If we get back to the frame's selected window,
1408 it means there was no acceptable alternative,
1409 so we cannot delete. */
1410 if (EQ (swindow
, FRAME_SELECTED_WINDOW (f
)))
1411 error ("Cannot delete window");
1414 /* If we need to change SWINDOW, do it. */
1415 if (! EQ (swindow
, FRAME_SELECTED_WINDOW (f
)))
1417 /* If we're about to delete the selected window on the
1418 selected frame, then we should use Fselect_window to select
1419 the new window. On the other hand, if we're about to
1420 delete the selected window on any other frame, we shouldn't do
1421 anything but set the frame's selected_window slot. */
1422 if (EQ (FRAME_SELECTED_WINDOW (f
), selected_window
))
1423 Fselect_window (swindow
, Qnil
);
1425 FRAME_SELECTED_WINDOW (f
) = swindow
;
1429 /* Now we know we can delete this one. */
1430 window_deletion_count
++;
1433 /* tem is null for dummy parent windows
1434 (which have inferiors but not any contents themselves) */
1438 unchain_marker (XMARKER (p
->pointm
));
1439 unchain_marker (XMARKER (p
->start
));
1442 /* Free window glyph matrices. It is sure that they are allocated
1443 again when ADJUST_GLYPHS is called. Block input so that expose
1444 events and other events that access glyph matrices are not
1445 processed while we are changing them. */
1447 free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f
)));
1451 XWINDOW (tem
)->prev
= p
->prev
;
1455 XWINDOW (tem
)->next
= p
->next
;
1457 if (EQ (window
, par
->hchild
))
1458 par
->hchild
= p
->next
;
1459 if (EQ (window
, par
->vchild
))
1460 par
->vchild
= p
->next
;
1462 /* Find one of our siblings to give our space to. */
1466 /* If p gives its space to its next sibling, that sibling needs
1467 to have its top/left side pulled back to where p's is.
1468 set_window_{height,width} will re-position the sibling's
1471 XWINDOW (sib
)->top_line
= p
->top_line
;
1472 XWINDOW (sib
)->left_col
= p
->left_col
;
1475 /* Stretch that sibling. */
1476 if (!NILP (par
->vchild
))
1477 set_window_height (sib
,
1478 XFASTINT (XWINDOW (sib
)->total_lines
) + XFASTINT (p
->total_lines
),
1480 if (!NILP (par
->hchild
))
1481 set_window_width (sib
,
1482 XFASTINT (XWINDOW (sib
)->total_cols
) + XFASTINT (p
->total_cols
),
1485 /* If parent now has only one child,
1486 put the child into the parent's place. */
1490 if (NILP (XWINDOW (tem
)->next
)) {
1491 replace_window (parent
, tem
);
1492 par
= XWINDOW (tem
);
1495 /* Since we may be deleting combination windows, we must make sure that
1496 not only p but all its children have been marked as deleted. */
1497 if (! NILP (p
->hchild
))
1498 delete_all_subwindows (XWINDOW (p
->hchild
));
1499 else if (! NILP (p
->vchild
))
1500 delete_all_subwindows (XWINDOW (p
->vchild
));
1502 /* Mark this window as deleted. */
1503 p
->buffer
= p
->hchild
= p
->vchild
= Qnil
;
1505 if (! NILP (par
->parent
))
1506 par
= XWINDOW (par
->parent
);
1508 /* Check if we have a v/hchild with a v/hchild. In that case remove
1511 if (! NILP (par
->vchild
) && ! NILP (XWINDOW (par
->vchild
)->vchild
))
1513 p
= XWINDOW (par
->vchild
);
1514 par
->vchild
= p
->vchild
;
1517 else if (! NILP (par
->hchild
) && ! NILP (XWINDOW (par
->hchild
)->hchild
))
1519 p
= XWINDOW (par
->hchild
);
1520 par
->hchild
= p
->hchild
;
1528 while (! NILP (tem
)) {
1529 XWINDOW (tem
)->parent
= p
->parent
;
1530 if (NILP (XWINDOW (tem
)->next
))
1532 tem
= XWINDOW (tem
)->next
;
1535 /* The next of the v/hchild we are removing is now the next of the
1536 last child for the v/hchild:
1537 Before v/hchild -> v/hchild -> next1 -> next2
1540 After: v/hchild -> next1 -> next2 -> next3
1542 XWINDOW (tem
)->next
= p
->next
;
1543 if (! NILP (p
->next
))
1544 XWINDOW (p
->next
)->prev
= tem
;
1546 p
->next
= p
->prev
= p
->vchild
= p
->hchild
= p
->buffer
= Qnil
;
1550 /* Adjust glyph matrices. */
1557 /***********************************************************************
1559 ***********************************************************************/
1561 /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object
1562 pointer. This is a callback function for foreach_window, used in
1563 function window_list. */
1566 add_window_to_list (w
, user_data
)
1570 Lisp_Object
*list
= (Lisp_Object
*) user_data
;
1572 XSETWINDOW (window
, w
);
1573 *list
= Fcons (window
, *list
);
1578 /* Return a list of all windows, for use by next_window. If
1579 Vwindow_list is a list, return that list. Otherwise, build a new
1580 list, cache it in Vwindow_list, and return that. */
1585 if (!CONSP (Vwindow_list
))
1589 Vwindow_list
= Qnil
;
1590 for (tail
= Vframe_list
; CONSP (tail
); tail
= XCDR (tail
))
1592 Lisp_Object args
[2];
1594 /* We are visiting windows in canonical order, and add
1595 new windows at the front of args[1], which means we
1596 have to reverse this list at the end. */
1598 foreach_window (XFRAME (XCAR (tail
)), add_window_to_list
, &args
[1]);
1599 args
[0] = Vwindow_list
;
1600 args
[1] = Fnreverse (args
[1]);
1601 Vwindow_list
= Fnconc (2, args
);
1605 return Vwindow_list
;
1609 /* Value is non-zero if WINDOW satisfies the constraints given by
1610 OWINDOW, MINIBUF and ALL_FRAMES.
1612 MINIBUF t means WINDOW may be minibuffer windows.
1613 `lambda' means WINDOW may not be a minibuffer window.
1614 a window means a specific minibuffer window
1616 ALL_FRAMES t means search all frames,
1617 nil means search just current frame,
1618 `visible' means search just visible frames,
1619 0 means search visible and iconified frames,
1620 a window means search the frame that window belongs to,
1621 a frame means consider windows on that frame, only. */
1624 candidate_window_p (window
, owindow
, minibuf
, all_frames
)
1625 Lisp_Object window
, owindow
, minibuf
, all_frames
;
1627 struct window
*w
= XWINDOW (window
);
1628 struct frame
*f
= XFRAME (w
->frame
);
1629 int candidate_p
= 1;
1631 if (!BUFFERP (w
->buffer
))
1633 else if (MINI_WINDOW_P (w
)
1634 && (EQ (minibuf
, Qlambda
)
1635 || (WINDOWP (minibuf
) && !EQ (minibuf
, window
))))
1637 /* If MINIBUF is `lambda' don't consider any mini-windows.
1638 If it is a window, consider only that one. */
1641 else if (EQ (all_frames
, Qt
))
1643 else if (NILP (all_frames
))
1645 xassert (WINDOWP (owindow
));
1646 candidate_p
= EQ (w
->frame
, XWINDOW (owindow
)->frame
);
1648 else if (EQ (all_frames
, Qvisible
))
1650 FRAME_SAMPLE_VISIBILITY (f
);
1651 candidate_p
= FRAME_VISIBLE_P (f
);
1653 else if (INTEGERP (all_frames
) && XINT (all_frames
) == 0)
1655 FRAME_SAMPLE_VISIBILITY (f
);
1656 candidate_p
= FRAME_VISIBLE_P (f
) || FRAME_ICONIFIED_P (f
);
1658 else if (WINDOWP (all_frames
))
1659 candidate_p
= (EQ (FRAME_MINIBUF_WINDOW (f
), all_frames
)
1660 || EQ (XWINDOW (all_frames
)->frame
, w
->frame
)
1661 || EQ (XWINDOW (all_frames
)->frame
, FRAME_FOCUS_FRAME (f
)));
1662 else if (FRAMEP (all_frames
))
1663 candidate_p
= EQ (all_frames
, w
->frame
);
1669 /* Decode arguments as allowed by Fnext_window, Fprevious_window, and
1670 Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and
1674 decode_next_window_args (window
, minibuf
, all_frames
)
1675 Lisp_Object
*window
, *minibuf
, *all_frames
;
1678 *window
= selected_window
;
1680 CHECK_LIVE_WINDOW (*window
);
1682 /* MINIBUF nil may or may not include minibuffers. Decide if it
1684 if (NILP (*minibuf
))
1685 *minibuf
= minibuf_level
? minibuf_window
: Qlambda
;
1686 else if (!EQ (*minibuf
, Qt
))
1689 /* Now *MINIBUF can be t => count all minibuffer windows, `lambda'
1690 => count none of them, or a specific minibuffer window (the
1691 active one) to count. */
1693 /* ALL_FRAMES nil doesn't specify which frames to include. */
1694 if (NILP (*all_frames
))
1695 *all_frames
= (!EQ (*minibuf
, Qlambda
)
1696 ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window
)->frame
))
1698 else if (EQ (*all_frames
, Qvisible
))
1700 else if (EQ (*all_frames
, make_number (0)))
1702 else if (FRAMEP (*all_frames
))
1704 else if (!EQ (*all_frames
, Qt
))
1707 /* Now *ALL_FRAMES is t meaning search all frames, nil meaning
1708 search just current frame, `visible' meaning search just visible
1709 frames, 0 meaning search visible and iconified frames, or a
1710 window, meaning search the frame that window belongs to, or a
1711 frame, meaning consider windows on that frame, only. */
1715 /* Return the next or previous window of WINDOW in canonical ordering
1716 of windows. NEXT_P non-zero means return the next window. See the
1717 documentation string of next-window for the meaning of MINIBUF and
1721 next_window (window
, minibuf
, all_frames
, next_p
)
1722 Lisp_Object window
, minibuf
, all_frames
;
1725 decode_next_window_args (&window
, &minibuf
, &all_frames
);
1727 /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just
1728 return the first window on the frame. */
1729 if (FRAMEP (all_frames
)
1730 && !EQ (all_frames
, XWINDOW (window
)->frame
))
1731 return Fframe_first_window (all_frames
);
1737 /* Find WINDOW in the list of all windows. */
1738 list
= Fmemq (window
, window_list ());
1740 /* Scan forward from WINDOW to the end of the window list. */
1742 for (list
= XCDR (list
); CONSP (list
); list
= XCDR (list
))
1743 if (candidate_window_p (XCAR (list
), window
, minibuf
, all_frames
))
1746 /* Scan from the start of the window list up to WINDOW. */
1748 for (list
= Vwindow_list
;
1749 CONSP (list
) && !EQ (XCAR (list
), window
);
1751 if (candidate_window_p (XCAR (list
), window
, minibuf
, all_frames
))
1755 window
= XCAR (list
);
1759 Lisp_Object candidate
, list
;
1761 /* Scan through the list of windows for candidates. If there are
1762 candidate windows in front of WINDOW, the last one of these
1763 is the one we want. If there are candidates following WINDOW
1764 in the list, again the last one of these is the one we want. */
1766 for (list
= window_list (); CONSP (list
); list
= XCDR (list
))
1768 if (EQ (XCAR (list
), window
))
1770 if (WINDOWP (candidate
))
1773 else if (candidate_window_p (XCAR (list
), window
, minibuf
,
1775 candidate
= XCAR (list
);
1778 if (WINDOWP (candidate
))
1786 DEFUN ("next-window", Fnext_window
, Snext_window
, 0, 3, 0,
1787 doc
: /* Return next window after WINDOW in canonical ordering of windows.
1788 If omitted, WINDOW defaults to the selected window.
1790 Optional second arg MINIBUF t means count the minibuffer window even
1791 if not active. MINIBUF nil or omitted means count the minibuffer iff
1792 it is active. MINIBUF neither t nor nil means not to count the
1793 minibuffer even if it is active.
1795 Several frames may share a single minibuffer; if the minibuffer
1796 counts, all windows on all frames that share that minibuffer count
1797 too. Therefore, `next-window' can be used to iterate through the
1798 set of windows even when the minibuffer is on another frame. If the
1799 minibuffer does not count, only windows from WINDOW's frame count.
1801 Optional third arg ALL-FRAMES t means include windows on all frames.
1802 ALL-FRAMES nil or omitted means cycle within the frames as specified
1803 above. ALL-FRAMES = `visible' means include windows on all visible frames.
1804 ALL-FRAMES = 0 means include windows on all visible and iconified frames.
1805 If ALL-FRAMES is a frame, restrict search to windows on that frame.
1806 Anything else means restrict to WINDOW's frame.
1808 If you use consistent values for MINIBUF and ALL-FRAMES, you can use
1809 `next-window' to iterate through the entire cycle of acceptable
1810 windows, eventually ending up back at the window you started with.
1811 `previous-window' traverses the same cycle, in the reverse order. */)
1812 (window
, minibuf
, all_frames
)
1813 Lisp_Object window
, minibuf
, all_frames
;
1815 return next_window (window
, minibuf
, all_frames
, 1);
1819 DEFUN ("previous-window", Fprevious_window
, Sprevious_window
, 0, 3, 0,
1820 doc
: /* Return the window preceding WINDOW in canonical ordering of windows.
1821 If omitted, WINDOW defaults to the selected window.
1823 Optional second arg MINIBUF t means count the minibuffer window even
1824 if not active. MINIBUF nil or omitted means count the minibuffer iff
1825 it is active. MINIBUF neither t nor nil means not to count the
1826 minibuffer even if it is active.
1828 Several frames may share a single minibuffer; if the minibuffer
1829 counts, all windows on all frames that share that minibuffer count
1830 too. Therefore, `previous-window' can be used to iterate through
1831 the set of windows even when the minibuffer is on another frame. If
1832 the minibuffer does not count, only windows from WINDOW's frame count
1834 Optional third arg ALL-FRAMES t means include windows on all frames.
1835 ALL-FRAMES nil or omitted means cycle within the frames as specified
1836 above. ALL-FRAMES = `visible' means include windows on all visible frames.
1837 ALL-FRAMES = 0 means include windows on all visible and iconified frames.
1838 If ALL-FRAMES is a frame, restrict search to windows on that frame.
1839 Anything else means restrict to WINDOW's frame.
1841 If you use consistent values for MINIBUF and ALL-FRAMES, you can use
1842 `previous-window' to iterate through the entire cycle of acceptable
1843 windows, eventually ending up back at the window you started with.
1844 `next-window' traverses the same cycle, in the reverse order. */)
1845 (window
, minibuf
, all_frames
)
1846 Lisp_Object window
, minibuf
, all_frames
;
1848 return next_window (window
, minibuf
, all_frames
, 0);
1852 DEFUN ("other-window", Fother_window
, Sother_window
, 1, 2, "p",
1853 doc
: /* Select the ARG'th different window on this frame.
1854 All windows on current frame are arranged in a cyclic order.
1855 This command selects the window ARG steps away in that order.
1856 A negative ARG moves in the opposite order. The optional second
1857 argument ALL-FRAMES has the same meaning as in `next-window', which see. */)
1859 Lisp_Object arg
, all_frames
;
1865 window
= selected_window
;
1867 for (i
= XINT (arg
); i
> 0; --i
)
1868 window
= Fnext_window (window
, Qnil
, all_frames
);
1870 window
= Fprevious_window (window
, Qnil
, all_frames
);
1872 Fselect_window (window
, Qnil
);
1877 DEFUN ("window-list", Fwindow_list
, Swindow_list
, 0, 3, 0,
1878 doc
: /* Return a list of windows on FRAME, starting with WINDOW.
1879 FRAME nil or omitted means use the selected frame.
1880 WINDOW nil or omitted means use the selected window.
1881 MINIBUF t means include the minibuffer window, even if it isn't active.
1882 MINIBUF nil or omitted means include the minibuffer window only
1884 MINIBUF neither nil nor t means never include the minibuffer window. */)
1885 (frame
, minibuf
, window
)
1886 Lisp_Object frame
, minibuf
, window
;
1889 window
= FRAMEP (frame
) ? XFRAME (frame
)->selected_window
: selected_window
;
1890 CHECK_WINDOW (window
);
1892 frame
= selected_frame
;
1894 if (!EQ (frame
, XWINDOW (window
)->frame
))
1895 error ("Window is on a different frame");
1897 return window_list_1 (window
, minibuf
, frame
);
1901 /* Return a list of windows in canonical ordering. Arguments are like
1902 for `next-window'. */
1905 window_list_1 (window
, minibuf
, all_frames
)
1906 Lisp_Object window
, minibuf
, all_frames
;
1908 Lisp_Object tail
, list
, rest
;
1910 decode_next_window_args (&window
, &minibuf
, &all_frames
);
1913 for (tail
= window_list (); CONSP (tail
); tail
= XCDR (tail
))
1914 if (candidate_window_p (XCAR (tail
), window
, minibuf
, all_frames
))
1915 list
= Fcons (XCAR (tail
), list
);
1917 /* Rotate the list to start with WINDOW. */
1918 list
= Fnreverse (list
);
1919 rest
= Fmemq (window
, list
);
1920 if (!NILP (rest
) && !EQ (rest
, list
))
1922 for (tail
= list
; !EQ (XCDR (tail
), rest
); tail
= XCDR (tail
))
1924 XSETCDR (tail
, Qnil
);
1925 list
= nconc2 (rest
, list
);
1932 /* Look at all windows, performing an operation specified by TYPE
1934 If FRAMES is Qt, look at all frames;
1935 Qnil, look at just the selected frame;
1936 Qvisible, look at visible frames;
1937 a frame, just look at windows on that frame.
1938 If MINI is non-zero, perform the operation on minibuffer windows too. */
1943 GET_BUFFER_WINDOW
, /* Arg is buffer */
1944 GET_LRU_WINDOW
, /* Arg is t for full-width windows only */
1945 DELETE_OTHER_WINDOWS
, /* Arg is window not to delete */
1946 DELETE_BUFFER_WINDOWS
, /* Arg is buffer */
1948 UNSHOW_BUFFER
, /* Arg is buffer */
1949 REDISPLAY_BUFFER_WINDOWS
, /* Arg is buffer */
1954 window_loop (type
, obj
, mini
, frames
)
1955 enum window_loop type
;
1956 Lisp_Object obj
, frames
;
1959 Lisp_Object window
, windows
, best_window
, frame_arg
;
1961 struct gcpro gcpro1
;
1963 /* If we're only looping through windows on a particular frame,
1964 frame points to that frame. If we're looping through windows
1965 on all frames, frame is 0. */
1966 if (FRAMEP (frames
))
1967 f
= XFRAME (frames
);
1968 else if (NILP (frames
))
1969 f
= SELECTED_FRAME ();
1974 frame_arg
= Qlambda
;
1975 else if (EQ (frames
, make_number (0)))
1977 else if (EQ (frames
, Qvisible
))
1982 /* frame_arg is Qlambda to stick to one frame,
1983 Qvisible to consider all visible frames,
1986 /* Pick a window to start with. */
1990 window
= FRAME_SELECTED_WINDOW (f
);
1992 window
= FRAME_SELECTED_WINDOW (SELECTED_FRAME ());
1994 windows
= window_list_1 (window
, mini
? Qt
: Qnil
, frame_arg
);
1998 for (; CONSP (windows
); windows
= XCDR (windows
))
2002 window
= XCAR (windows
);
2003 w
= XWINDOW (window
);
2005 /* Note that we do not pay attention here to whether the frame
2006 is visible, since Fwindow_list skips non-visible frames if
2007 that is desired, under the control of frame_arg. */
2008 if (!MINI_WINDOW_P (w
)
2009 /* For UNSHOW_BUFFER, we must always consider all windows. */
2010 || type
== UNSHOW_BUFFER
2011 || (mini
&& minibuf_level
> 0))
2014 case GET_BUFFER_WINDOW
:
2015 if (EQ (w
->buffer
, obj
)
2016 /* Don't find any minibuffer window
2017 except the one that is currently in use. */
2018 && (MINI_WINDOW_P (w
)
2019 ? EQ (window
, minibuf_window
)
2022 if (NILP (best_window
))
2023 best_window
= window
;
2024 else if (EQ (window
, selected_window
))
2025 /* For compatibility with 20.x, prefer to return
2027 best_window
= window
;
2031 case GET_LRU_WINDOW
:
2032 /* `obj' is an integer encoding a bitvector.
2033 `obj & 1' means consider only full-width windows.
2034 `obj & 2' means consider also dedicated windows. */
2035 if (((XINT (obj
) & 1) && !WINDOW_FULL_WIDTH_P (w
))
2036 || (!(XINT (obj
) & 2) && !NILP (w
->dedicated
))
2037 /* Minibuffer windows are always ignored. */
2038 || MINI_WINDOW_P (w
))
2040 if (NILP (best_window
)
2041 || (XFASTINT (XWINDOW (best_window
)->use_time
)
2042 > XFASTINT (w
->use_time
)))
2043 best_window
= window
;
2046 case DELETE_OTHER_WINDOWS
:
2047 if (!EQ (window
, obj
))
2048 Fdelete_window (window
);
2051 case DELETE_BUFFER_WINDOWS
:
2052 if (EQ (w
->buffer
, obj
))
2054 struct frame
*f
= XFRAME (WINDOW_FRAME (w
));
2056 /* If this window is dedicated, and in a frame of its own,
2058 if (EQ (window
, FRAME_ROOT_WINDOW (f
))
2059 && !NILP (w
->dedicated
)
2060 && other_visible_frames (f
))
2062 /* Skip the other windows on this frame.
2063 There might be one, the minibuffer! */
2064 while (CONSP (XCDR (windows
))
2065 && EQ (XWINDOW (XCAR (windows
))->frame
,
2066 XWINDOW (XCAR (XCDR (windows
)))->frame
))
2067 windows
= XCDR (windows
);
2069 /* Now we can safely delete the frame. */
2070 Fdelete_frame (w
->frame
, Qnil
);
2072 else if (NILP (w
->parent
))
2074 /* If we're deleting the buffer displayed in the
2075 only window on the frame, find a new buffer to
2078 buffer
= Fother_buffer (obj
, Qnil
, w
->frame
);
2079 Fset_window_buffer (window
, buffer
, Qnil
);
2080 if (EQ (window
, selected_window
))
2081 Fset_buffer (w
->buffer
);
2084 Fdelete_window (window
);
2088 case GET_LARGEST_WINDOW
:
2089 { /* nil `obj' means to ignore dedicated windows. */
2090 /* Ignore dedicated windows and minibuffers. */
2091 if (MINI_WINDOW_P (w
) || (NILP (obj
) && !NILP (w
->dedicated
)))
2094 if (NILP (best_window
))
2095 best_window
= window
;
2098 struct window
*b
= XWINDOW (best_window
);
2099 if (XFASTINT (w
->total_lines
) * XFASTINT (w
->total_cols
)
2100 > XFASTINT (b
->total_lines
) * XFASTINT (b
->total_cols
))
2101 best_window
= window
;
2107 if (EQ (w
->buffer
, obj
))
2110 struct frame
*f
= XFRAME (w
->frame
);
2112 /* Find another buffer to show in this window. */
2113 buffer
= Fother_buffer (obj
, Qnil
, w
->frame
);
2115 /* If this window is dedicated, and in a frame of its own,
2117 if (EQ (window
, FRAME_ROOT_WINDOW (f
))
2118 && !NILP (w
->dedicated
)
2119 && other_visible_frames (f
))
2121 /* Skip the other windows on this frame.
2122 There might be one, the minibuffer! */
2123 while (CONSP (XCDR (windows
))
2124 && EQ (XWINDOW (XCAR (windows
))->frame
,
2125 XWINDOW (XCAR (XCDR (windows
)))->frame
))
2126 windows
= XCDR (windows
);
2128 /* Now we can safely delete the frame. */
2129 Fdelete_frame (w
->frame
, Qnil
);
2131 else if (!NILP (w
->dedicated
) && !NILP (w
->parent
))
2134 XSETWINDOW (window
, w
);
2135 /* If this window is dedicated and not the only window
2136 in its frame, then kill it. */
2137 Fdelete_window (window
);
2141 /* Otherwise show a different buffer in the window. */
2142 w
->dedicated
= Qnil
;
2143 Fset_window_buffer (window
, buffer
, Qnil
);
2144 if (EQ (window
, selected_window
))
2145 Fset_buffer (w
->buffer
);
2150 case REDISPLAY_BUFFER_WINDOWS
:
2151 if (EQ (w
->buffer
, obj
))
2153 mark_window_display_accurate (window
, 0);
2154 w
->update_mode_line
= Qt
;
2155 XBUFFER (obj
)->prevent_redisplay_optimizations_p
= 1;
2156 ++update_mode_lines
;
2157 best_window
= window
;
2161 /* Check for a window that has a killed buffer. */
2162 case CHECK_ALL_WINDOWS
:
2163 if (! NILP (w
->buffer
)
2164 && NILP (XBUFFER (w
->buffer
)->name
))
2168 case WINDOW_LOOP_UNUSED
:
2177 /* Used for debugging. Abort if any window has a dead buffer. */
2180 check_all_windows ()
2182 window_loop (CHECK_ALL_WINDOWS
, Qnil
, 1, Qt
);
2185 DEFUN ("get-lru-window", Fget_lru_window
, Sget_lru_window
, 0, 2, 0,
2186 doc
: /* Return the window least recently selected or used for display.
2187 Return a full-width window if possible.
2188 A minibuffer window is never a candidate.
2189 A dedicated window is never a candidate, unless DEDICATED is non-nil,
2190 so if all windows are dedicated, the value is nil.
2191 If optional argument FRAME is `visible', search all visible frames.
2192 If FRAME is 0, search all visible and iconified frames.
2193 If FRAME is t, search all frames.
2194 If FRAME is nil, search only the selected frame.
2195 If FRAME is a frame, search only that frame. */)
2197 Lisp_Object frame
, dedicated
;
2199 register Lisp_Object w
;
2200 /* First try for a window that is full-width */
2201 w
= window_loop (GET_LRU_WINDOW
,
2202 NILP (dedicated
) ? make_number (1) : make_number (3),
2204 if (!NILP (w
) && !EQ (w
, selected_window
))
2206 /* If none of them, try the rest */
2207 return window_loop (GET_LRU_WINDOW
,
2208 NILP (dedicated
) ? make_number (0) : make_number (2),
2212 DEFUN ("get-largest-window", Fget_largest_window
, Sget_largest_window
, 0, 2, 0,
2213 doc
: /* Return the largest window in area.
2214 A minibuffer window is never a candidate.
2215 A dedicated window is never a candidate unless DEDICATED is non-nil,
2216 so if all windows are dedicated, the value is nil.
2217 If optional argument FRAME is `visible', search all visible frames.
2218 If FRAME is 0, search all visible and iconified frames.
2219 If FRAME is t, search all frames.
2220 If FRAME is nil, search only the selected frame.
2221 If FRAME is a frame, search only that frame. */)
2223 Lisp_Object frame
, dedicated
;
2225 return window_loop (GET_LARGEST_WINDOW
, dedicated
, 0,
2229 DEFUN ("get-buffer-window", Fget_buffer_window
, Sget_buffer_window
, 1, 2, 0,
2230 doc
: /* Return a window currently displaying BUFFER, or nil if none.
2231 BUFFER can be a buffer or a buffer name.
2232 If optional argument FRAME is `visible', search all visible frames.
2233 If optional argument FRAME is 0, search all visible and iconified frames.
2234 If FRAME is t, search all frames.
2235 If FRAME is nil, search only the selected frame.
2236 If FRAME is a frame, search only that frame. */)
2238 Lisp_Object buffer
, frame
;
2240 buffer
= Fget_buffer (buffer
);
2241 if (BUFFERP (buffer
))
2242 return window_loop (GET_BUFFER_WINDOW
, buffer
, 1, frame
);
2247 DEFUN ("delete-other-windows", Fdelete_other_windows
, Sdelete_other_windows
,
2249 doc
: /* Make WINDOW (or the selected window) fill its frame.
2250 Only the frame WINDOW is on is affected.
2251 This function tries to reduce display jumps
2252 by keeping the text previously visible in WINDOW
2253 in the same place on the frame. Doing this depends on
2254 the value of (window-start WINDOW), so if calling this function
2255 in a program gives strange scrolling, make sure the window-start
2256 value is reasonable when this function is called. */)
2265 window
= selected_window
;
2267 CHECK_LIVE_WINDOW (window
);
2268 w
= XWINDOW (window
);
2270 startpos
= marker_position (w
->start
);
2271 top
= WINDOW_TOP_EDGE_LINE (w
) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w
)));
2273 if (MINI_WINDOW_P (w
) && top
> 0)
2274 error ("Can't expand minibuffer to full frame");
2276 window_loop (DELETE_OTHER_WINDOWS
, window
, 0, WINDOW_FRAME (w
));
2278 /* Try to minimize scrolling, by setting the window start to the point
2279 will cause the text at the old window start to be at the same place
2280 on the frame. But don't try to do this if the window start is
2281 outside the visible portion (as might happen when the display is
2282 not current, due to typeahead). */
2283 new_top
= WINDOW_TOP_EDGE_LINE (w
) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w
)));
2285 && startpos
>= BUF_BEGV (XBUFFER (w
->buffer
))
2286 && startpos
<= BUF_ZV (XBUFFER (w
->buffer
)))
2288 struct position pos
;
2289 struct buffer
*obuf
= current_buffer
;
2291 Fset_buffer (w
->buffer
);
2292 /* This computation used to temporarily move point, but that can
2293 have unwanted side effects due to text properties. */
2294 pos
= *vmotion (startpos
, -top
, w
);
2296 set_marker_both (w
->start
, w
->buffer
, pos
.bufpos
, pos
.bytepos
);
2297 w
->window_end_valid
= Qnil
;
2298 w
->start_at_line_beg
= ((pos
.bytepos
== BEGV_BYTE
2299 || FETCH_BYTE (pos
.bytepos
- 1) == '\n') ? Qt
2301 /* We need to do this, so that the window-scroll-functions
2303 w
->optional_new_start
= Qt
;
2305 set_buffer_internal (obuf
);
2311 DEFUN ("delete-windows-on", Fdelete_windows_on
, Sdelete_windows_on
,
2312 1, 2, "bDelete windows on (buffer): ",
2313 doc
: /* Delete all windows showing BUFFER.
2314 BUFFER must be a buffer or the name of an existing buffer.
2315 Optional second argument FRAME controls which frames are affected.
2316 If optional argument FRAME is `visible', search all visible frames.
2317 If FRAME is 0, search all visible and iconified frames.
2318 If FRAME is nil, search all frames.
2319 If FRAME is t, search only the selected frame.
2320 If FRAME is a frame, search only that frame. */)
2322 Lisp_Object buffer
, frame
;
2324 /* FRAME uses t and nil to mean the opposite of what window_loop
2328 else if (EQ (frame
, Qt
))
2333 buffer
= Fget_buffer (buffer
);
2334 CHECK_BUFFER (buffer
);
2335 window_loop (DELETE_BUFFER_WINDOWS
, buffer
, 0, frame
);
2341 DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows
,
2342 Sreplace_buffer_in_windows
,
2343 1, 1, "bReplace buffer in windows: ",
2344 doc
: /* Replace BUFFER with some other buffer in all windows showing it.
2345 BUFFER may be a buffer or the name of an existing buffer. */)
2351 buffer
= Fget_buffer (buffer
);
2352 CHECK_BUFFER (buffer
);
2353 window_loop (UNSHOW_BUFFER
, buffer
, 0, Qt
);
2358 /* Replace BUFFER with some other buffer in all windows
2359 of all frames, even those on other keyboards. */
2362 replace_buffer_in_all_windows (buffer
)
2366 Lisp_Object tail
, frame
;
2368 /* A single call to window_loop won't do the job
2369 because it only considers frames on the current keyboard.
2370 So loop manually over frames, and handle each one. */
2371 FOR_EACH_FRAME (tail
, frame
)
2372 window_loop (UNSHOW_BUFFER
, buffer
, 1, frame
);
2374 window_loop (UNSHOW_BUFFER
, buffer
, 1, Qt
);
2378 /* Set the height of WINDOW and all its inferiors. */
2380 /* The smallest acceptable dimensions for a window. Anything smaller
2381 might crash Emacs. */
2383 #define MIN_SAFE_WINDOW_WIDTH (2)
2384 #define MIN_SAFE_WINDOW_HEIGHT (1)
2386 /* Make sure that window_min_height and window_min_width are
2387 not too small; if they are, set them to safe minima. */
2390 check_min_window_sizes ()
2392 /* Smaller values might permit a crash. */
2393 if (window_min_width
< MIN_SAFE_WINDOW_WIDTH
)
2394 window_min_width
= MIN_SAFE_WINDOW_WIDTH
;
2395 if (window_min_height
< MIN_SAFE_WINDOW_HEIGHT
)
2396 window_min_height
= MIN_SAFE_WINDOW_HEIGHT
;
2399 /* If *ROWS or *COLS are too small a size for FRAME, set them to the
2400 minimum allowable size. */
2403 check_frame_size (frame
, rows
, cols
)
2407 /* For height, we have to see:
2408 how many windows the frame has at minimum (one or two),
2409 and whether it has a menu bar or other special stuff at the top. */
2411 = ((FRAME_MINIBUF_ONLY_P (frame
) || ! FRAME_HAS_MINIBUF_P (frame
))
2412 ? MIN_SAFE_WINDOW_HEIGHT
2413 : 2 * MIN_SAFE_WINDOW_HEIGHT
);
2415 if (FRAME_TOP_MARGIN (frame
) > 0)
2416 min_height
+= FRAME_TOP_MARGIN (frame
);
2418 if (*rows
< min_height
)
2420 if (*cols
< MIN_SAFE_WINDOW_WIDTH
)
2421 *cols
= MIN_SAFE_WINDOW_WIDTH
;
2425 /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means
2426 check if W's width can be changed, otherwise check W's height.
2427 CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's
2428 siblings, too. If none of the siblings is resizable, WINDOW isn't
2432 window_fixed_size_p (w
, width_p
, check_siblings_p
)
2434 int width_p
, check_siblings_p
;
2439 if (!NILP (w
->hchild
))
2441 c
= XWINDOW (w
->hchild
);
2445 /* A horiz. combination is fixed-width if all of if its
2447 while (c
&& window_fixed_size_p (c
, width_p
, 0))
2448 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2449 fixed_p
= c
== NULL
;
2453 /* A horiz. combination is fixed-height if one of if its
2455 while (c
&& !window_fixed_size_p (c
, width_p
, 0))
2456 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2457 fixed_p
= c
!= NULL
;
2460 else if (!NILP (w
->vchild
))
2462 c
= XWINDOW (w
->vchild
);
2466 /* A vert. combination is fixed-width if one of if its
2468 while (c
&& !window_fixed_size_p (c
, width_p
, 0))
2469 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2470 fixed_p
= c
!= NULL
;
2474 /* A vert. combination is fixed-height if all of if its
2476 while (c
&& window_fixed_size_p (c
, width_p
, 0))
2477 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2478 fixed_p
= c
== NULL
;
2481 else if (BUFFERP (w
->buffer
))
2483 struct buffer
*old
= current_buffer
;
2486 current_buffer
= XBUFFER (w
->buffer
);
2487 val
= find_symbol_value (Qwindow_size_fixed
);
2488 current_buffer
= old
;
2491 if (!EQ (val
, Qunbound
))
2493 fixed_p
= !NILP (val
);
2496 && ((EQ (val
, Qheight
) && width_p
)
2497 || (EQ (val
, Qwidth
) && !width_p
)))
2501 /* Can't tell if this one is resizable without looking at
2502 siblings. If all siblings are fixed-size this one is too. */
2503 if (!fixed_p
&& check_siblings_p
&& WINDOWP (w
->parent
))
2507 for (child
= w
->prev
; !NILP (child
); child
= XWINDOW (child
)->prev
)
2508 if (!window_fixed_size_p (XWINDOW (child
), width_p
, 0))
2512 for (child
= w
->next
; !NILP (child
); child
= XWINDOW (child
)->next
)
2513 if (!window_fixed_size_p (XWINDOW (child
), width_p
, 0))
2527 /* Return the minimum size of window W, not taking fixed-width windows
2528 into account. WIDTH_P non-zero means return the minimum width,
2529 otherwise return the minimum height. If W is a combination window,
2530 compute the minimum size from the minimum sizes of W's children. */
2533 window_min_size_1 (w
, width_p
)
2540 if (!NILP (w
->hchild
))
2542 c
= XWINDOW (w
->hchild
);
2547 /* The min width of a horizontal combination is
2548 the sum of the min widths of its children. */
2551 size
+= window_min_size_1 (c
, width_p
);
2552 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2557 /* The min height a horizontal combination equals
2558 the maximum of all min height of its children. */
2561 int min_size
= window_min_size_1 (c
, width_p
);
2562 size
= max (min_size
, size
);
2563 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2567 else if (!NILP (w
->vchild
))
2569 c
= XWINDOW (w
->vchild
);
2574 /* The min width of a vertical combination is
2575 the maximum of the min widths of its children. */
2578 int min_size
= window_min_size_1 (c
, width_p
);
2579 size
= max (min_size
, size
);
2580 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2585 /* The min height of a vertical combination equals
2586 the sum of the min height of its children. */
2589 size
+= window_min_size_1 (c
, width_p
);
2590 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2597 size
= max (window_min_width
,
2598 (MIN_SAFE_WINDOW_WIDTH
2599 + WINDOW_FRINGE_COLS (w
)
2600 + WINDOW_SCROLL_BAR_COLS (w
)));
2603 if (MINI_WINDOW_P (w
)
2604 || (!WINDOW_WANTS_MODELINE_P (w
)
2605 && !WINDOW_WANTS_HEADER_LINE_P (w
)))
2608 size
= window_min_height
;
2616 /* Return the minimum size of window W, taking fixed-size windows into
2617 account. WIDTH_P non-zero means return the minimum width,
2618 otherwise return the minimum height. IGNORE_FIXED_P non-zero means
2619 ignore if W is fixed-size. Set *FIXED to 1 if W is fixed-size
2620 unless FIXED is null. */
2623 window_min_size (w
, width_p
, ignore_fixed_p
, fixed
)
2625 int width_p
, ignore_fixed_p
, *fixed
;
2632 fixed_p
= window_fixed_size_p (w
, width_p
, 1);
2638 size
= width_p
? XFASTINT (w
->total_cols
) : XFASTINT (w
->total_lines
);
2640 size
= window_min_size_1 (w
, width_p
);
2646 /* Adjust the margins of window W if text area is too small.
2647 Return 1 if window width is ok after adjustment; 0 if window
2648 is still too narrow. */
2651 adjust_window_margins (w
)
2654 int box_cols
= (WINDOW_TOTAL_COLS (w
)
2655 - WINDOW_FRINGE_COLS (w
)
2656 - WINDOW_SCROLL_BAR_COLS (w
));
2657 int margin_cols
= (WINDOW_LEFT_MARGIN_COLS (w
)
2658 + WINDOW_RIGHT_MARGIN_COLS (w
));
2660 if (box_cols
- margin_cols
>= MIN_SAFE_WINDOW_WIDTH
)
2663 if (margin_cols
< 0 || box_cols
< MIN_SAFE_WINDOW_WIDTH
)
2666 /* Window's text area is too narrow, but reducing the window
2667 margins will fix that. */
2668 margin_cols
= box_cols
- MIN_SAFE_WINDOW_WIDTH
;
2669 if (WINDOW_RIGHT_MARGIN_COLS (w
) > 0)
2671 if (WINDOW_LEFT_MARGIN_COLS (w
) > 0)
2672 w
->left_margin_cols
= w
->right_margin_cols
2673 = make_number (margin_cols
/2);
2675 w
->right_margin_cols
= make_number (margin_cols
);
2678 w
->left_margin_cols
= make_number (margin_cols
);
2682 /* Calculate new sizes for windows in the list FORWARD when the window size
2683 goes from TOTAL to SIZE. TOTAL must be greater than SIZE.
2684 The number of windows in FORWARD is NCHILDREN, and the number that
2685 can shrink is SHRINKABLE.
2686 The minimum size a window can have is MIN_SIZE.
2687 If we are shrinking fixed windows, RESIZE_FIXED_P is non-zero.
2688 If we are shrinking columns, WIDTH_P is non-zero, otherwise we are
2691 This function returns an allocated array of new sizes that the caller
2692 must free. The size -1 means the window is fixed and RESIZE_FIXED_P
2693 is zero. Array index 0 refers to the first window in FORWARD, 1 to
2694 the second, and so on.
2696 This function tries to keep windows at least at the minimum size
2697 and resize other windows before it resizes any window to zero (i.e.
2698 delete that window).
2700 Windows are resized proportional to their size, so bigger windows
2701 shrink more than smaller windows. */
2703 shrink_windows (total
, size
, nchildren
, shrinkable
,
2704 min_size
, resize_fixed_p
, forward
, width_p
)
2705 int total
, size
, nchildren
, shrinkable
, min_size
;
2706 int resize_fixed_p
, width_p
;
2707 Lisp_Object forward
;
2709 int available_resize
= 0;
2713 int smallest
= total
;
2714 int total_removed
= 0;
2715 int total_shrink
= total
- size
;
2718 new_sizes
= xmalloc (sizeof (*new_sizes
) * nchildren
);
2720 for (i
= 0, child
= forward
; !NILP (child
); child
= c
->next
, ++i
)
2724 c
= XWINDOW (child
);
2725 child_size
= width_p
? XINT (c
->total_cols
) : XINT (c
->total_lines
);
2727 if (! resize_fixed_p
&& window_fixed_size_p (c
, width_p
, 0))
2731 new_sizes
[i
] = child_size
;
2732 if (child_size
> min_size
)
2733 available_resize
+= child_size
- min_size
;
2736 /* We might need to shrink some windows to zero. Find the smallest
2737 windows and set them to 0 until we can fulfil the new size. */
2739 while (shrinkable
> 1 && size
+ available_resize
< total
)
2741 for (i
= 0; i
< nchildren
; ++i
)
2742 if (new_sizes
[i
] > 0 && smallest
> new_sizes
[i
])
2743 smallest
= new_sizes
[i
];
2745 for (i
= 0; i
< nchildren
; ++i
)
2746 if (new_sizes
[i
] == smallest
)
2748 /* Resize this window down to zero. */
2750 if (smallest
> min_size
)
2751 available_resize
-= smallest
- min_size
;
2752 available_resize
+= smallest
;
2754 total_removed
+= smallest
;
2756 /* We don't know what the smallest is now. */
2759 /* Out of for, just remove one window at the time and
2760 check again if we have enough space. */
2765 /* Now, calculate the new sizes. Try to shrink each window
2766 proportional to its size. */
2767 for (i
= 0; i
< nchildren
; ++i
)
2769 if (new_sizes
[i
] > min_size
)
2771 int to_shrink
= total_shrink
*new_sizes
[i
]/total
;
2772 if (new_sizes
[i
] - to_shrink
< min_size
)
2773 to_shrink
= new_sizes
[i
] - min_size
;
2774 new_sizes
[i
] -= to_shrink
;
2775 total_removed
+= to_shrink
;
2779 /* Any reminder due to rounding, we just subtract from windows
2780 that are left and still can be shrunk. */
2781 while (total_shrink
> total_removed
)
2783 int nonzero_sizes
= 0;
2784 int nonzero_idx
= -1;
2786 for (i
= 0; i
< nchildren
; ++i
)
2787 if (new_sizes
[i
] > 0)
2793 for (i
= 0; i
< nchildren
; ++i
)
2794 if (new_sizes
[i
] > min_size
)
2799 /* Out of for, just shrink one window at the time and
2800 check again if we have enough space. */
2805 /* Special case, only one window left. */
2806 if (nonzero_sizes
== 1)
2810 /* Any surplus due to rounding, we add to windows that are left. */
2811 while (total_shrink
< total_removed
)
2813 for (i
= 0; i
< nchildren
; ++i
)
2815 if (new_sizes
[i
] != 0 && total_shrink
< total_removed
)
2827 /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set
2828 WINDOW's width. Resize WINDOW's children, if any, so that they
2829 keep their proportionate size relative to WINDOW. Propagate
2830 WINDOW's top or left edge position to children. Delete windows
2831 that become too small unless NODELETE_P is non-zero.
2833 If NODELETE_P is 2, that means we do delete windows that are
2834 too small, even if they were too small before! */
2837 size_window (window
, size
, width_p
, nodelete_p
)
2839 int size
, width_p
, nodelete_p
;
2841 struct window
*w
= XWINDOW (window
);
2843 Lisp_Object child
, *forward
, *sideward
;
2844 int old_size
, min_size
, safe_min_size
;
2846 /* We test nodelete_p != 2 and nodelete_p != 1 below, so it
2847 seems like it's too soon to do this here. ++KFS. */
2848 if (nodelete_p
== 2)
2851 check_min_window_sizes ();
2852 size
= max (0, size
);
2854 /* If the window has been "too small" at one point,
2855 don't delete it for being "too small" in the future.
2856 Preserve it as long as that is at all possible. */
2859 old_size
= WINDOW_TOTAL_COLS (w
);
2860 min_size
= window_min_width
;
2861 /* Ensure that there is room for the scroll bar and fringes!
2862 We may reduce display margins though. */
2863 safe_min_size
= (MIN_SAFE_WINDOW_WIDTH
2864 + WINDOW_FRINGE_COLS (w
)
2865 + WINDOW_SCROLL_BAR_COLS (w
));
2869 old_size
= XINT (w
->total_lines
);
2870 min_size
= window_min_height
;
2871 safe_min_size
= MIN_SAFE_WINDOW_HEIGHT
;
2874 if (old_size
< min_size
&& nodelete_p
!= 2)
2875 w
->too_small_ok
= Qt
;
2877 /* Maybe delete WINDOW if it's too small. */
2878 if (nodelete_p
!= 1 && !NILP (w
->parent
))
2880 if (!MINI_WINDOW_P (w
) && !NILP (w
->too_small_ok
))
2881 min_size
= width_p
? MIN_SAFE_WINDOW_WIDTH
: MIN_SAFE_WINDOW_HEIGHT
;
2882 if (min_size
< safe_min_size
)
2883 min_size
= safe_min_size
;
2884 if (size
< min_size
)
2886 delete_window (window
);
2891 /* Set redisplay hints. */
2892 w
->last_modified
= make_number (0);
2893 w
->last_overlay_modified
= make_number (0);
2894 windows_or_buffers_changed
++;
2895 FRAME_WINDOW_SIZES_CHANGED (XFRAME (w
->frame
)) = 1;
2899 sideward
= &w
->vchild
;
2900 forward
= &w
->hchild
;
2901 w
->total_cols
= make_number (size
);
2902 adjust_window_margins (w
);
2906 sideward
= &w
->hchild
;
2907 forward
= &w
->vchild
;
2908 w
->total_lines
= make_number (size
);
2909 w
->orig_total_lines
= Qnil
;
2912 if (!NILP (*sideward
))
2914 for (child
= *sideward
; !NILP (child
); child
= c
->next
)
2916 c
= XWINDOW (child
);
2918 c
->left_col
= w
->left_col
;
2920 c
->top_line
= w
->top_line
;
2921 size_window (child
, size
, width_p
, nodelete_p
);
2924 else if (!NILP (*forward
))
2926 int fixed_size
, each
, extra
, n
;
2927 int resize_fixed_p
, nfixed
;
2928 int last_pos
, first_pos
, nchildren
, total
;
2929 int *new_sizes
= NULL
;
2931 /* Determine the fixed-size portion of the this window, and the
2932 number of child windows. */
2933 fixed_size
= nchildren
= nfixed
= total
= 0;
2934 for (child
= *forward
; !NILP (child
); child
= c
->next
, ++nchildren
)
2938 c
= XWINDOW (child
);
2939 child_size
= width_p
? XINT (c
->total_cols
) : XINT (c
->total_lines
);
2940 total
+= child_size
;
2942 if (window_fixed_size_p (c
, width_p
, 0))
2944 fixed_size
+= child_size
;
2949 /* If the new size is smaller than fixed_size, or if there
2950 aren't any resizable windows, allow resizing fixed-size
2952 resize_fixed_p
= nfixed
== nchildren
|| size
< fixed_size
;
2954 /* Compute how many lines/columns to add/remove to each child. The
2955 value of extra takes care of rounding errors. */
2956 n
= resize_fixed_p
? nchildren
: nchildren
- nfixed
;
2957 if (size
< total
&& n
> 1)
2958 new_sizes
= shrink_windows (total
, size
, nchildren
, n
, min_size
,
2959 resize_fixed_p
, *forward
, width_p
);
2962 each
= (size
- total
) / n
;
2963 extra
= (size
- total
) - n
* each
;
2966 /* Compute new children heights and edge positions. */
2967 first_pos
= width_p
? XINT (w
->left_col
) : XINT (w
->top_line
);
2968 last_pos
= first_pos
;
2969 for (n
= 0, child
= *forward
; !NILP (child
); child
= c
->next
, ++n
)
2971 int new_size
, old_size
;
2973 c
= XWINDOW (child
);
2974 old_size
= width_p
? XFASTINT (c
->total_cols
) : XFASTINT (c
->total_lines
);
2975 new_size
= old_size
;
2977 /* The top or left edge position of this child equals the
2978 bottom or right edge of its predecessor. */
2980 c
->left_col
= make_number (last_pos
);
2982 c
->top_line
= make_number (last_pos
);
2984 /* If this child can be resized, do it. */
2985 if (resize_fixed_p
|| !window_fixed_size_p (c
, width_p
, 0))
2987 new_size
= new_sizes
? new_sizes
[n
] : old_size
+ each
+ extra
;
2991 /* Set new height. Note that size_window also propagates
2992 edge positions to children, so it's not a no-op if we
2993 didn't change the child's size. */
2994 size_window (child
, new_size
, width_p
, 1);
2996 /* Remember the bottom/right edge position of this child; it
2997 will be used to set the top/left edge of the next child. */
2998 last_pos
+= new_size
;
3001 if (new_sizes
) xfree (new_sizes
);
3003 /* We should have covered the parent exactly with child windows. */
3004 xassert (size
== last_pos
- first_pos
);
3006 /* Now delete any children that became too small. */
3008 for (child
= *forward
; !NILP (child
); child
= c
->next
)
3011 c
= XWINDOW (child
);
3012 child_size
= width_p
? XINT (c
->total_cols
) : XINT (c
->total_lines
);
3013 size_window (child
, child_size
, width_p
, 2);
3018 /* Set WINDOW's height to HEIGHT, and recursively change the height of
3019 WINDOW's children. NODELETE non-zero means don't delete windows
3020 that become too small in the process. (The caller should check
3021 later and do so if appropriate.) */
3024 set_window_height (window
, height
, nodelete
)
3029 size_window (window
, height
, 0, nodelete
);
3033 /* Set WINDOW's width to WIDTH, and recursively change the width of
3034 WINDOW's children. NODELETE non-zero means don't delete windows
3035 that become too small in the process. (The caller should check
3036 later and do so if appropriate.) */
3039 set_window_width (window
, width
, nodelete
)
3044 size_window (window
, width
, 1, nodelete
);
3047 /* Change window heights in windows rooted in WINDOW by N lines. */
3050 change_window_heights (window
, n
)
3054 struct window
*w
= XWINDOW (window
);
3056 XSETFASTINT (w
->top_line
, XFASTINT (w
->top_line
) + n
);
3057 XSETFASTINT (w
->total_lines
, XFASTINT (w
->total_lines
) - n
);
3059 if (INTEGERP (w
->orig_top_line
))
3060 XSETFASTINT (w
->orig_top_line
, XFASTINT (w
->orig_top_line
) + n
);
3061 if (INTEGERP (w
->orig_total_lines
))
3062 XSETFASTINT (w
->orig_total_lines
, XFASTINT (w
->orig_total_lines
) - n
);
3064 /* Handle just the top child in a vertical split. */
3065 if (!NILP (w
->vchild
))
3066 change_window_heights (w
->vchild
, n
);
3068 /* Adjust all children in a horizontal split. */
3069 for (window
= w
->hchild
; !NILP (window
); window
= w
->next
)
3071 w
= XWINDOW (window
);
3072 change_window_heights (window
, n
);
3077 int window_select_count
;
3080 Fset_window_buffer_unwind (obuf
)
3087 EXFUN (Fset_window_fringes
, 4);
3088 EXFUN (Fset_window_scroll_bars
, 4);
3090 /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero
3091 means it's allowed to run hooks. See make_frame for a case where
3092 it's not allowed. KEEP_MARGINS_P non-zero means that the current
3093 margins, fringes, and scroll-bar settings of the window are not
3094 reset from the buffer's local settings. */
3097 set_window_buffer (window
, buffer
, run_hooks_p
, keep_margins_p
)
3098 Lisp_Object window
, buffer
;
3099 int run_hooks_p
, keep_margins_p
;
3101 struct window
*w
= XWINDOW (window
);
3102 struct buffer
*b
= XBUFFER (buffer
);
3103 int count
= SPECPDL_INDEX ();
3107 if (EQ (window
, selected_window
))
3108 b
->last_selected_window
= window
;
3110 /* Let redisplay errors through. */
3111 b
->display_error_modiff
= 0;
3113 /* Update time stamps of buffer display. */
3114 if (INTEGERP (b
->display_count
))
3115 XSETINT (b
->display_count
, XINT (b
->display_count
) + 1);
3116 b
->display_time
= Fcurrent_time ();
3118 XSETFASTINT (w
->window_end_pos
, 0);
3119 XSETFASTINT (w
->window_end_vpos
, 0);
3120 bzero (&w
->last_cursor
, sizeof w
->last_cursor
);
3121 w
->window_end_valid
= Qnil
;
3122 w
->hscroll
= w
->min_hscroll
= make_number (0);
3124 set_marker_both (w
->pointm
, buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
3125 set_marker_restricted (w
->start
,
3126 make_number (b
->last_window_start
),
3128 w
->start_at_line_beg
= Qnil
;
3129 w
->force_start
= Qnil
;
3130 XSETFASTINT (w
->last_modified
, 0);
3131 XSETFASTINT (w
->last_overlay_modified
, 0);
3132 windows_or_buffers_changed
++;
3134 /* We must select BUFFER for running the window-scroll-functions.
3135 If WINDOW is selected, switch permanently.
3136 Otherwise, switch but go back to the ambient buffer afterward. */
3137 if (EQ (window
, selected_window
))
3138 Fset_buffer (buffer
);
3139 /* We can't check ! NILP (Vwindow_scroll_functions) here
3140 because that might itself be a local variable. */
3141 else if (window_initialized
)
3143 record_unwind_protect (Fset_window_buffer_unwind
, Fcurrent_buffer ());
3144 Fset_buffer (buffer
);
3147 if (!keep_margins_p
)
3149 /* Set left and right marginal area width etc. from buffer. */
3151 /* This may call adjust_window_margins three times, so
3152 temporarily disable window margins. */
3153 Lisp_Object save_left
= w
->left_margin_cols
;
3154 Lisp_Object save_right
= w
->right_margin_cols
;
3156 w
->left_margin_cols
= w
->right_margin_cols
= Qnil
;
3158 Fset_window_fringes (window
,
3159 b
->left_fringe_width
, b
->right_fringe_width
,
3160 b
->fringes_outside_margins
);
3162 Fset_window_scroll_bars (window
,
3163 b
->scroll_bar_width
,
3164 b
->vertical_scroll_bar_type
, Qnil
);
3166 w
->left_margin_cols
= save_left
;
3167 w
->right_margin_cols
= save_right
;
3169 Fset_window_margins (window
,
3170 b
->left_margin_cols
, b
->right_margin_cols
);
3175 if (! NILP (Vwindow_scroll_functions
))
3176 run_hook_with_args_2 (Qwindow_scroll_functions
, window
,
3177 Fmarker_position (w
->start
));
3179 if (! NILP (Vwindow_configuration_change_hook
)
3180 && ! NILP (Vrun_hooks
))
3181 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
3184 unbind_to (count
, Qnil
);
3188 DEFUN ("set-window-buffer", Fset_window_buffer
, Sset_window_buffer
, 2, 3, 0,
3189 doc
: /* Make WINDOW display BUFFER as its contents.
3190 BUFFER can be a buffer or the name of an existing buffer.
3191 Optional third arg KEEP-MARGINS non-nil means that WINDOW's current
3192 display margins, fringe widths, and scroll bar settings are maintained;
3193 the default is to reset these from BUFFER's local settings or the frame
3196 This function runs the hook `window-scroll-functions'. */)
3197 (window
, buffer
, keep_margins
)
3198 register Lisp_Object window
, buffer
, keep_margins
;
3200 register Lisp_Object tem
;
3201 register struct window
*w
= decode_window (window
);
3203 XSETWINDOW (window
, w
);
3204 buffer
= Fget_buffer (buffer
);
3205 CHECK_BUFFER (buffer
);
3207 if (NILP (XBUFFER (buffer
)->name
))
3208 error ("Attempt to display deleted buffer");
3212 error ("Window is deleted");
3213 else if (! EQ (tem
, Qt
)) /* w->buffer is t when the window
3214 is first being set up. */
3216 if (!NILP (w
->dedicated
) && !EQ (tem
, buffer
))
3217 error ("Window is dedicated to `%s'",
3218 SDATA (XBUFFER (tem
)->name
));
3223 set_window_buffer (window
, buffer
, 1, !NILP (keep_margins
));
3227 /* Note that selected_window can be nil
3228 when this is called from Fset_window_configuration. */
3230 DEFUN ("select-window", Fselect_window
, Sselect_window
, 1, 2, 0,
3231 doc
: /* Select WINDOW. Most editing will apply to WINDOW's buffer.
3232 If WINDOW is not already selected, make WINDOW's buffer current
3233 and make WINDOW the frame's selected window. Return WINDOW.
3234 Optional second arg NORECORD non-nil means
3235 do not put this buffer at the front of the list of recently selected ones.
3237 Note that the main editor command loop
3238 selects the buffer of the selected window before each command. */)
3240 register Lisp_Object window
, norecord
;
3242 register struct window
*w
;
3243 register struct window
*ow
;
3246 CHECK_LIVE_WINDOW (window
);
3248 w
= XWINDOW (window
);
3249 w
->frozen_window_start_p
= 0;
3251 ++window_select_count
;
3252 XSETFASTINT (w
->use_time
, window_select_count
);
3253 if (EQ (window
, selected_window
))
3256 /* Store the current buffer's actual point into the
3257 old selected window. It belongs to that window,
3258 and when the window is not selected, must be in the window. */
3259 if (!NILP (selected_window
))
3261 ow
= XWINDOW (selected_window
);
3262 if (! NILP (ow
->buffer
))
3263 set_marker_both (ow
->pointm
, ow
->buffer
,
3264 BUF_PT (XBUFFER (ow
->buffer
)),
3265 BUF_PT_BYTE (XBUFFER (ow
->buffer
)));
3268 selected_window
= window
;
3269 sf
= SELECTED_FRAME ();
3270 if (XFRAME (WINDOW_FRAME (w
)) != sf
)
3272 XFRAME (WINDOW_FRAME (w
))->selected_window
= window
;
3273 /* Use this rather than Fhandle_switch_frame
3274 so that FRAME_FOCUS_FRAME is moved appropriately as we
3275 move around in the state where a minibuffer in a separate
3277 Fselect_frame (WINDOW_FRAME (w
));
3280 sf
->selected_window
= window
;
3282 if (NILP (norecord
))
3283 record_buffer (w
->buffer
);
3284 Fset_buffer (w
->buffer
);
3286 XBUFFER (w
->buffer
)->last_selected_window
= window
;
3288 /* Go to the point recorded in the window.
3289 This is important when the buffer is in more
3290 than one window. It also matters when
3291 redisplay_window has altered point after scrolling,
3292 because it makes the change only in the window. */
3294 register int new_point
= marker_position (w
->pointm
);
3295 if (new_point
< BEGV
)
3297 else if (new_point
> ZV
)
3303 windows_or_buffers_changed
++;
3308 select_window_norecord (window
)
3311 return Fselect_window (window
, Qt
);
3314 /* Deiconify the frame containing the window WINDOW,
3315 unless it is the selected frame;
3318 The reason for the exception for the selected frame
3319 is that it seems better not to change the selected frames visibility
3320 merely because of displaying a different buffer in it.
3321 The deiconification is useful when a buffer gets shown in
3322 another frame that you were not using lately. */
3325 display_buffer_1 (window
)
3328 Lisp_Object frame
= XWINDOW (window
)->frame
;
3329 FRAME_PTR f
= XFRAME (frame
);
3331 FRAME_SAMPLE_VISIBILITY (f
);
3333 if (EQ (frame
, selected_frame
))
3334 ; /* Assume the selected frame is already visible enough. */
3335 else if (minibuf_level
> 0
3336 && MINI_WINDOW_P (XWINDOW (selected_window
))
3337 && WINDOW_LIVE_P (minibuf_selected_window
)
3338 && EQ (frame
, WINDOW_FRAME (XWINDOW (minibuf_selected_window
))))
3339 ; /* Assume the frame from which we invoked the minibuffer is visible. */
3342 if (FRAME_ICONIFIED_P (f
))
3343 Fmake_frame_visible (frame
);
3344 else if (FRAME_VISIBLE_P (f
))
3345 Fraise_frame (frame
);
3351 DEFUN ("special-display-p", Fspecial_display_p
, Sspecial_display_p
, 1, 1, 0,
3352 doc
: /* Returns non-nil if a buffer named BUFFER-NAME gets a special frame.
3353 If the value is t, `display-buffer' or `pop-to-buffer' would create a
3354 special frame for that buffer using the default frame parameters.
3356 If the value is a list, it is a list of frame parameters that would be used
3357 to make a frame for that buffer.
3358 The variables `special-display-buffer-names'
3359 and `special-display-regexps' control this. */)
3361 Lisp_Object buffer_name
;
3365 CHECK_STRING (buffer_name
);
3367 tem
= Fmember (buffer_name
, Vspecial_display_buffer_names
);
3371 tem
= Fassoc (buffer_name
, Vspecial_display_buffer_names
);
3375 for (tem
= Vspecial_display_regexps
; CONSP (tem
); tem
= XCDR (tem
))
3377 Lisp_Object car
= XCAR (tem
);
3379 && fast_string_match (car
, buffer_name
) >= 0)
3381 else if (CONSP (car
)
3382 && STRINGP (XCAR (car
))
3383 && fast_string_match (XCAR (car
), buffer_name
) >= 0)
3389 DEFUN ("same-window-p", Fsame_window_p
, Ssame_window_p
, 1, 1, 0,
3390 doc
: /* Returns non-nil if a buffer named BUFFER-NAME would use the same window.
3391 More precisely, if `display-buffer' or `pop-to-buffer' would display
3392 that buffer in the selected window rather than (as usual) in some other window.
3393 See `same-window-buffer-names' and `same-window-regexps'. */)
3395 Lisp_Object buffer_name
;
3399 CHECK_STRING (buffer_name
);
3401 tem
= Fmember (buffer_name
, Vsame_window_buffer_names
);
3405 tem
= Fassoc (buffer_name
, Vsame_window_buffer_names
);
3409 for (tem
= Vsame_window_regexps
; CONSP (tem
); tem
= XCDR (tem
))
3411 Lisp_Object car
= XCAR (tem
);
3413 && fast_string_match (car
, buffer_name
) >= 0)
3415 else if (CONSP (car
)
3416 && STRINGP (XCAR (car
))
3417 && fast_string_match (XCAR (car
), buffer_name
) >= 0)
3423 /* Use B so the default is (other-buffer). */
3424 DEFUN ("display-buffer", Fdisplay_buffer
, Sdisplay_buffer
, 1, 3,
3425 "BDisplay buffer: \nP",
3426 doc
: /* Make BUFFER appear in some window but don't select it.
3427 BUFFER must be the name of an existing buffer, or, when called from Lisp,
3429 If BUFFER is shown already in some window, just use that one,
3430 unless the window is the selected window and the optional second
3431 argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg).
3432 If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER.
3433 Returns the window displaying BUFFER.
3434 If `display-buffer-reuse-frames' is non-nil, and another frame is currently
3435 displaying BUFFER, then simply raise that frame.
3437 The variables `special-display-buffer-names',
3438 `special-display-regexps', `same-window-buffer-names', and
3439 `same-window-regexps' customize how certain buffer names are handled.
3440 The latter two take effect only if NOT-THIS-WINDOW is nil.
3442 If optional argument FRAME is `visible', search all visible frames.
3443 If FRAME is 0, search all visible and iconified frames.
3444 If FRAME is t, search all frames.
3445 If FRAME is a frame, search only that frame.
3446 If FRAME is nil, search only the selected frame
3447 (actually the last nonminibuffer frame),
3448 unless `pop-up-frames' or `display-buffer-reuse-frames' is non-nil,
3449 which means search visible and iconified frames.
3451 If a full-width window on a splittable frame is available to display
3452 the buffer, it may be split, subject to the value of the variable
3453 `split-height-threshold'.
3455 If `even-window-heights' is non-nil, window heights will be evened out
3456 if displaying the buffer causes two vertically adjacent windows to be
3458 (buffer
, not_this_window
, frame
)
3459 register Lisp_Object buffer
, not_this_window
, frame
;
3461 register Lisp_Object window
, tem
, swp
;
3465 buffer
= Fget_buffer (buffer
);
3466 CHECK_BUFFER (buffer
);
3468 if (!NILP (Vdisplay_buffer_function
))
3469 return call2 (Vdisplay_buffer_function
, buffer
, not_this_window
);
3471 if (NILP (not_this_window
)
3472 && XBUFFER (XWINDOW (selected_window
)->buffer
) == XBUFFER (buffer
))
3473 return display_buffer_1 (selected_window
);
3475 /* See if the user has specified this buffer should appear
3476 in the selected window. */
3477 if (NILP (not_this_window
))
3479 swp
= Fsame_window_p (XBUFFER (buffer
)->name
);
3480 if (!NILP (swp
) && !no_switch_window (selected_window
))
3482 Fswitch_to_buffer (buffer
, Qnil
);
3483 return display_buffer_1 (selected_window
);
3487 /* If the user wants pop-up-frames or display-buffer-reuse-frames,
3488 look for a window showing BUFFER on any visible or iconified frame.
3489 Otherwise search only the current frame. */
3492 else if (pop_up_frames
3493 || display_buffer_reuse_frames
3494 || last_nonminibuf_frame
== 0)
3495 XSETFASTINT (tem
, 0);
3497 XSETFRAME (tem
, last_nonminibuf_frame
);
3499 window
= Fget_buffer_window (buffer
, tem
);
3501 && (NILP (not_this_window
) || !EQ (window
, selected_window
)))
3502 return display_buffer_1 (window
);
3504 /* Certain buffer names get special handling. */
3505 if (!NILP (Vspecial_display_function
) && NILP (swp
))
3507 tem
= Fspecial_display_p (XBUFFER (buffer
)->name
);
3509 return call1 (Vspecial_display_function
, buffer
);
3511 return call2 (Vspecial_display_function
, buffer
, tem
);
3514 /* If there are no frames open that have more than a minibuffer,
3515 we need to create a new frame. */
3516 if (pop_up_frames
|| last_nonminibuf_frame
== 0)
3518 window
= Fframe_selected_window (call0 (Vpop_up_frame_function
));
3519 Fset_window_buffer (window
, buffer
, Qnil
);
3520 return display_buffer_1 (window
);
3523 f
= SELECTED_FRAME ();
3525 || FRAME_MINIBUF_ONLY_P (f
)
3526 /* If the current frame is a special display frame,
3527 don't try to reuse its windows. */
3528 || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f
))->dedicated
))
3533 if (FRAME_MINIBUF_ONLY_P (f
))
3534 XSETFRAME (frames
, last_nonminibuf_frame
);
3535 /* Don't try to create a window if we would get an error. */
3536 if (split_height_threshold
< window_min_height
<< 1)
3537 split_height_threshold
= window_min_height
<< 1;
3539 /* Note that both Fget_largest_window and Fget_lru_window
3540 ignore minibuffers and dedicated windows.
3541 This means they can return nil. */
3543 /* If the frame we would try to split cannot be split,
3544 try other frames. */
3545 if (FRAME_NO_SPLIT_P (NILP (frames
) ? f
: last_nonminibuf_frame
))
3547 /* Try visible frames first. */
3548 window
= Fget_largest_window (Qvisible
, Qt
);
3549 /* If that didn't work, try iconified frames. */
3551 window
= Fget_largest_window (make_number (0), Qt
);
3552 #if 0 /* Don't try windows on other displays. */
3554 window
= Fget_largest_window (Qt
, Qt
);
3558 window
= Fget_largest_window (frames
, Qt
);
3560 /* If we got a tall enough full-width window that can be split,
3563 && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window
)->frame
))
3564 && window_height (window
) >= split_height_threshold
3565 && WINDOW_FULL_WIDTH_P (XWINDOW (window
)))
3566 window
= Fsplit_window (window
, Qnil
, Qnil
);
3569 Lisp_Object upper
, lower
, other
;
3571 window
= Fget_lru_window (frames
, Qt
);
3572 /* If the LRU window is selected, and big enough,
3573 and can be split, split it. */
3575 && ! FRAME_NO_SPLIT_P (XFRAME (XWINDOW (window
)->frame
))
3576 && (EQ (window
, selected_window
)
3577 || EQ (XWINDOW (window
)->parent
, Qnil
))
3578 && window_height (window
) >= window_min_height
<< 1)
3579 window
= Fsplit_window (window
, Qnil
, Qnil
);
3581 window
= Fget_lru_window (frames
, Qnil
);
3582 /* If Fget_lru_window returned nil, try other approaches. */
3584 /* Try visible frames first. */
3586 window
= Fget_buffer_window (buffer
, Qvisible
);
3588 window
= Fget_largest_window (Qvisible
, Qnil
);
3589 /* If that didn't work, try iconified frames. */
3591 window
= Fget_buffer_window (buffer
, make_number (0));
3593 window
= Fget_largest_window (make_number (0), Qnil
);
3595 #if 0 /* Don't try frames on other displays. */
3597 window
= Fget_buffer_window (buffer
, Qt
);
3599 window
= Fget_largest_window (Qt
, Qnil
);
3601 /* As a last resort, make a new frame. */
3603 window
= Fframe_selected_window (call0 (Vpop_up_frame_function
));
3604 /* If window appears above or below another,
3605 even out their heights. */
3606 other
= upper
= lower
= Qnil
;
3607 if (!NILP (XWINDOW (window
)->prev
))
3608 other
= upper
= XWINDOW (window
)->prev
, lower
= window
;
3609 if (!NILP (XWINDOW (window
)->next
))
3610 other
= lower
= XWINDOW (window
)->next
, upper
= window
;
3612 && !NILP (Veven_window_heights
)
3613 /* Check that OTHER and WINDOW are vertically arrayed. */
3614 && !EQ (XWINDOW (other
)->top_line
, XWINDOW (window
)->top_line
)
3615 && (XFASTINT (XWINDOW (other
)->total_lines
)
3616 > XFASTINT (XWINDOW (window
)->total_lines
)))
3618 int total
= (XFASTINT (XWINDOW (other
)->total_lines
)
3619 + XFASTINT (XWINDOW (window
)->total_lines
));
3620 enlarge_window (upper
,
3621 total
/ 2 - XFASTINT (XWINDOW (upper
)->total_lines
),
3627 window
= Fget_lru_window (Qnil
, Qnil
);
3629 Fset_window_buffer (window
, buffer
, Qnil
);
3630 return display_buffer_1 (window
);
3634 DEFUN ("force-window-update", Fforce_window_update
, Sforce_window_update
,
3636 doc
: /* Force redisplay of all windows.
3637 If optional arg OBJECT is a window, force redisplay of that window only.
3638 If OBJECT is a buffer or buffer name, force redisplay of all windows
3639 displaying that buffer. */)
3645 windows_or_buffers_changed
++;
3646 update_mode_lines
++;
3650 if (WINDOWP (object
))
3652 struct window
*w
= XWINDOW (object
);
3653 mark_window_display_accurate (object
, 0);
3654 w
->update_mode_line
= Qt
;
3655 if (BUFFERP (w
->buffer
))
3656 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
3657 ++update_mode_lines
;
3661 if (STRINGP (object
))
3662 object
= Fget_buffer (object
);
3663 if (BUFFERP (object
) && !NILP (XBUFFER (object
)->name
))
3665 /* Walk all windows looking for buffer, and force update
3666 of each of those windows. */
3668 object
= window_loop (REDISPLAY_BUFFER_WINDOWS
, object
, 0, Qvisible
);
3669 return NILP (object
) ? Qnil
: Qt
;
3672 /* If nothing suitable was found, just return.
3673 We could signal an error, but this feature will typically be used
3674 asynchronously in timers or process sentinels, so we don't. */
3680 temp_output_buffer_show (buf
)
3681 register Lisp_Object buf
;
3683 register struct buffer
*old
= current_buffer
;
3684 register Lisp_Object window
;
3685 register struct window
*w
;
3687 XBUFFER (buf
)->directory
= current_buffer
->directory
;
3690 BUF_SAVE_MODIFF (XBUFFER (buf
)) = MODIFF
;
3694 #if 0 /* rms: there should be no reason for this. */
3695 XBUFFER (buf
)->prevent_redisplay_optimizations_p
= 1;
3697 set_buffer_internal (old
);
3699 if (!NILP (Vtemp_buffer_show_function
))
3700 call1 (Vtemp_buffer_show_function
, buf
);
3703 window
= Fdisplay_buffer (buf
, Qnil
, Qnil
);
3705 if (!EQ (XWINDOW (window
)->frame
, selected_frame
))
3706 Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window
)));
3707 Vminibuf_scroll_window
= window
;
3708 w
= XWINDOW (window
);
3709 XSETFASTINT (w
->hscroll
, 0);
3710 XSETFASTINT (w
->min_hscroll
, 0);
3711 set_marker_restricted_both (w
->start
, buf
, BEG
, BEG
);
3712 set_marker_restricted_both (w
->pointm
, buf
, BEG
, BEG
);
3714 /* Run temp-buffer-show-hook, with the chosen window selected
3715 and its buffer current. */
3717 if (!NILP (Vrun_hooks
)
3718 && !NILP (Fboundp (Qtemp_buffer_show_hook
))
3719 && !NILP (Fsymbol_value (Qtemp_buffer_show_hook
)))
3721 int count
= SPECPDL_INDEX ();
3722 Lisp_Object prev_window
, prev_buffer
;
3723 prev_window
= selected_window
;
3724 XSETBUFFER (prev_buffer
, old
);
3726 /* Select the window that was chosen, for running the hook.
3727 Note: Both Fselect_window and select_window_norecord may
3728 set-buffer to the buffer displayed in the window,
3729 so we need to save the current buffer. --stef */
3730 record_unwind_protect (Fset_buffer
, prev_buffer
);
3731 record_unwind_protect (select_window_norecord
, prev_window
);
3732 Fselect_window (window
, Qt
);
3733 Fset_buffer (w
->buffer
);
3734 call1 (Vrun_hooks
, Qtemp_buffer_show_hook
);
3735 unbind_to (count
, Qnil
);
3741 make_dummy_parent (window
)
3745 register struct window
*o
, *p
;
3748 o
= XWINDOW (window
);
3749 p
= allocate_window ();
3750 for (i
= 0; i
< VECSIZE (struct window
); ++i
)
3751 ((struct Lisp_Vector
*) p
)->contents
[i
]
3752 = ((struct Lisp_Vector
*)o
)->contents
[i
];
3753 XSETWINDOW (new, p
);
3756 XSETFASTINT (p
->sequence_number
, sequence_number
);
3758 /* Put new into window structure in place of window */
3759 replace_window (window
, new);
3772 DEFUN ("split-window", Fsplit_window
, Ssplit_window
, 0, 3, "",
3773 doc
: /* Split WINDOW, putting SIZE lines in the first of the pair.
3774 WINDOW defaults to selected one and SIZE to half its size.
3775 If optional third arg HORFLAG is non-nil, split side by side
3776 and put SIZE columns in the first of the pair. In that case,
3777 SIZE includes that window's scroll bar, or the divider column to its right.
3778 Interactively, all arguments are nil.
3780 Returns the newly created window (which is the lower or rightmost one).
3781 The upper or leftmost window is the original one, and remains selected
3782 if it was selected before.
3784 See Info node `(elisp)Splitting Windows' for more details and examples.*/)
3785 (window
, size
, horflag
)
3786 Lisp_Object window
, size
, horflag
;
3788 register Lisp_Object
new;
3789 register struct window
*o
, *p
;
3791 register int size_int
;
3794 window
= selected_window
;
3796 CHECK_LIVE_WINDOW (window
);
3798 o
= XWINDOW (window
);
3799 fo
= XFRAME (WINDOW_FRAME (o
));
3803 if (!NILP (horflag
))
3804 /* Calculate the size of the left-hand window, by dividing
3805 the usable space in columns by two.
3806 We round up, since the left-hand window may include
3807 a dividing line, while the right-hand may not. */
3808 size_int
= (XFASTINT (o
->total_cols
) + 1) >> 1;
3810 size_int
= XFASTINT (o
->total_lines
) >> 1;
3814 CHECK_NUMBER (size
);
3815 size_int
= XINT (size
);
3818 if (MINI_WINDOW_P (o
))
3819 error ("Attempt to split minibuffer window");
3820 else if (window_fixed_size_p (o
, !NILP (horflag
), 0))
3821 error ("Attempt to split fixed-size window");
3823 check_min_window_sizes ();
3827 if (size_int
< window_min_height
)
3828 error ("Window height %d too small (after splitting)", size_int
);
3829 if (size_int
+ window_min_height
> XFASTINT (o
->total_lines
))
3830 error ("Window height %d too small (after splitting)",
3831 XFASTINT (o
->total_lines
) - size_int
);
3832 if (NILP (o
->parent
)
3833 || NILP (XWINDOW (o
->parent
)->vchild
))
3835 make_dummy_parent (window
);
3837 XWINDOW (new)->vchild
= window
;
3842 if (size_int
< window_min_width
)
3843 error ("Window width %d too small (after splitting)", size_int
);
3845 if (size_int
+ window_min_width
> XFASTINT (o
->total_cols
))
3846 error ("Window width %d too small (after splitting)",
3847 XFASTINT (o
->total_cols
) - size_int
);
3848 if (NILP (o
->parent
)
3849 || NILP (XWINDOW (o
->parent
)->hchild
))
3851 make_dummy_parent (window
);
3853 XWINDOW (new)->hchild
= window
;
3857 /* Now we know that window's parent is a vertical combination
3858 if we are dividing vertically, or a horizontal combination
3859 if we are making side-by-side windows */
3861 windows_or_buffers_changed
++;
3862 FRAME_WINDOW_SIZES_CHANGED (fo
) = 1;
3863 new = make_window ();
3866 p
->frame
= o
->frame
;
3868 if (!NILP (p
->next
))
3869 XWINDOW (p
->next
)->prev
= new;
3872 p
->parent
= o
->parent
;
3874 p
->window_end_valid
= Qnil
;
3875 bzero (&p
->last_cursor
, sizeof p
->last_cursor
);
3877 /* Duplicate special geometry settings. */
3879 p
->left_margin_cols
= o
->left_margin_cols
;
3880 p
->right_margin_cols
= o
->right_margin_cols
;
3881 p
->left_fringe_width
= o
->left_fringe_width
;
3882 p
->right_fringe_width
= o
->right_fringe_width
;
3883 p
->fringes_outside_margins
= o
->fringes_outside_margins
;
3884 p
->scroll_bar_width
= o
->scroll_bar_width
;
3885 p
->vertical_scroll_bar_type
= o
->vertical_scroll_bar_type
;
3887 /* Apportion the available frame space among the two new windows */
3889 if (!NILP (horflag
))
3891 p
->total_lines
= o
->total_lines
;
3892 p
->top_line
= o
->top_line
;
3893 XSETFASTINT (p
->total_cols
, XFASTINT (o
->total_cols
) - size_int
);
3894 XSETFASTINT (o
->total_cols
, size_int
);
3895 XSETFASTINT (p
->left_col
, XFASTINT (o
->left_col
) + size_int
);
3896 adjust_window_margins (p
);
3897 adjust_window_margins (o
);
3901 p
->left_col
= o
->left_col
;
3902 p
->total_cols
= o
->total_cols
;
3903 XSETFASTINT (p
->total_lines
, XFASTINT (o
->total_lines
) - size_int
);
3904 XSETFASTINT (o
->total_lines
, size_int
);
3905 XSETFASTINT (p
->top_line
, XFASTINT (o
->top_line
) + size_int
);
3908 /* Adjust glyph matrices. */
3911 Fset_window_buffer (new, o
->buffer
, Qt
);
3915 DEFUN ("enlarge-window", Fenlarge_window
, Senlarge_window
, 1, 2, "p",
3916 doc
: /* Make current window ARG lines bigger.
3917 From program, optional second arg non-nil means grow sideways ARG columns.
3918 Interactively, if an argument is not given, make the window one line bigger.
3919 If HORIZONTAL is non-nil, enlarge horizontally instead of vertically.
3920 This function can delete windows, even the second window, if they get
3923 Lisp_Object arg
, horizontal
;
3926 enlarge_window (selected_window
, XINT (arg
), !NILP (horizontal
));
3928 if (! NILP (Vwindow_configuration_change_hook
))
3929 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
3934 DEFUN ("shrink-window", Fshrink_window
, Sshrink_window
, 1, 2, "p",
3935 doc
: /* Make current window ARG lines smaller.
3936 From program, optional second arg non-nil means shrink sideways arg columns.
3937 Interactively, if an argument is not given, make the window one line smaller. Only
3938 siblings to the right or below are changed. */)
3940 Lisp_Object arg
, side
;
3943 enlarge_window (selected_window
, -XINT (arg
), !NILP (side
));
3945 if (! NILP (Vwindow_configuration_change_hook
))
3946 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
3952 window_height (window
)
3955 register struct window
*p
= XWINDOW (window
);
3956 return WINDOW_TOTAL_LINES (p
);
3960 window_width (window
)
3963 register struct window
*p
= XWINDOW (window
);
3964 return WINDOW_TOTAL_COLS (p
);
3969 *(horiz_flag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line))
3971 #define CURSIZE(w) \
3972 *(horiz_flag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines))
3975 /* Enlarge WINDOW by DELTA.
3976 HORIZ_FLAG nonzero means enlarge it horizontally;
3977 zero means do it vertically.
3979 Siblings of the selected window are resized to fulfill the size
3980 request. If they become too small in the process, they will be
3984 enlarge_window (window
, delta
, horiz_flag
)
3986 int delta
, horiz_flag
;
3988 Lisp_Object parent
, next
, prev
;
3992 int (*sizefun
) P_ ((Lisp_Object
))
3993 = horiz_flag
? window_width
: window_height
;
3994 void (*setsizefun
) P_ ((Lisp_Object
, int, int))
3995 = (horiz_flag
? set_window_width
: set_window_height
);
3997 /* Check values of window_min_width and window_min_height for
3999 check_min_window_sizes ();
4001 /* Give up if this window cannot be resized. */
4002 if (window_fixed_size_p (XWINDOW (window
), horiz_flag
, 1))
4003 error ("Window is not resizable");
4005 /* Find the parent of the selected window. */
4008 p
= XWINDOW (window
);
4014 error ("No other window to side of this one");
4019 ? !NILP (XWINDOW (parent
)->hchild
)
4020 : !NILP (XWINDOW (parent
)->vchild
))
4026 sizep
= &CURSIZE (window
);
4029 register int maxdelta
;
4031 /* Compute the maximum size increment this window can have. */
4033 maxdelta
= (!NILP (parent
) ? (*sizefun
) (parent
) - XINT (*sizep
)
4034 /* This is a main window followed by a minibuffer. */
4035 : !NILP (p
->next
) ? ((*sizefun
) (p
->next
)
4036 - window_min_size (XWINDOW (p
->next
),
4038 /* This is a minibuffer following a main window. */
4039 : !NILP (p
->prev
) ? ((*sizefun
) (p
->prev
)
4040 - window_min_size (XWINDOW (p
->prev
),
4042 /* This is a frame with only one window, a minibuffer-only
4043 or a minibufferless frame. */
4046 if (delta
> maxdelta
)
4047 /* This case traps trying to make the minibuffer
4048 the full frame, or make the only window aside from the
4049 minibuffer the full frame. */
4053 if (XINT (*sizep
) + delta
< window_min_size (XWINDOW (window
), horiz_flag
, 0, 0))
4055 delete_window (window
);
4062 /* Find the total we can get from other siblings without deleting them. */
4064 for (next
= p
->next
; ! NILP (next
); next
= XWINDOW (next
)->next
)
4065 maximum
+= (*sizefun
) (next
) - window_min_size (XWINDOW (next
),
4067 for (prev
= p
->prev
; ! NILP (prev
); prev
= XWINDOW (prev
)->prev
)
4068 maximum
+= (*sizefun
) (prev
) - window_min_size (XWINDOW (prev
),
4071 /* If we can get it all from them without deleting them, do so. */
4072 if (delta
<= maximum
)
4074 Lisp_Object first_unaffected
;
4075 Lisp_Object first_affected
;
4080 first_affected
= window
;
4081 /* Look at one sibling at a time,
4082 moving away from this window in both directions alternately,
4083 and take as much as we can get without deleting that sibling. */
4085 && (!NILP (next
) || !NILP (prev
)))
4089 int this_one
= ((*sizefun
) (next
)
4090 - window_min_size (XWINDOW (next
),
4091 horiz_flag
, 0, &fixed_p
));
4094 if (this_one
> delta
)
4097 (*setsizefun
) (next
, (*sizefun
) (next
) - this_one
, 0);
4098 (*setsizefun
) (window
, XINT (*sizep
) + this_one
, 0);
4103 next
= XWINDOW (next
)->next
;
4111 int this_one
= ((*sizefun
) (prev
)
4112 - window_min_size (XWINDOW (prev
),
4113 horiz_flag
, 0, &fixed_p
));
4116 if (this_one
> delta
)
4119 first_affected
= prev
;
4121 (*setsizefun
) (prev
, (*sizefun
) (prev
) - this_one
, 0);
4122 (*setsizefun
) (window
, XINT (*sizep
) + this_one
, 0);
4127 prev
= XWINDOW (prev
)->prev
;
4131 xassert (delta
== 0);
4133 /* Now recalculate the edge positions of all the windows affected,
4134 based on the new sizes. */
4135 first_unaffected
= next
;
4136 prev
= first_affected
;
4137 for (next
= XWINDOW (prev
)->next
; ! EQ (next
, first_unaffected
);
4138 prev
= next
, next
= XWINDOW (next
)->next
)
4140 XSETINT (CURBEG (next
), XINT (CURBEG (prev
)) + (*sizefun
) (prev
));
4141 /* This does not change size of NEXT,
4142 but it propagates the new top edge to its children */
4143 (*setsizefun
) (next
, (*sizefun
) (next
), 0);
4148 register int delta1
;
4149 register int opht
= (*sizefun
) (parent
);
4151 if (opht
<= XINT (*sizep
) + delta
)
4153 /* If trying to grow this window to or beyond size of the parent,
4154 just delete all the sibling windows. */
4155 Lisp_Object start
, tem
, next
;
4157 start
= XWINDOW (parent
)->vchild
;
4159 start
= XWINDOW (parent
)->hchild
;
4161 /* Delete any siblings that come after WINDOW. */
4162 tem
= XWINDOW (window
)->next
;
4163 while (! NILP (tem
))
4165 next
= XWINDOW (tem
)->next
;
4166 delete_window (tem
);
4170 /* Delete any siblings that come after WINDOW.
4171 Note that if START is not WINDOW, then WINDOW still
4172 Fhas siblings, so WINDOW has not yet replaced its parent. */
4174 while (! EQ (tem
, window
))
4176 next
= XWINDOW (tem
)->next
;
4177 delete_window (tem
);
4183 /* Otherwise, make delta1 just right so that if we add
4184 delta1 lines to this window and to the parent, and then
4185 shrink the parent back to its original size, the new
4186 proportional size of this window will increase by delta.
4188 The function size_window will compute the new height h'
4189 of the window from delta1 as:
4192 x = delta1 - delta1/n * n for the 1st resizable child
4195 where n is the number of children that can be resized.
4196 We can ignore x by choosing a delta1 that is a multiple of
4197 n. We want the height of this window to come out as
4207 The number of children n equals the number of resizable
4208 children of this window + 1 because we know window itself
4209 is resizable (otherwise we would have signalled an error). */
4211 struct window
*w
= XWINDOW (window
);
4215 for (s
= w
->next
; !NILP (s
); s
= XWINDOW (s
)->next
)
4216 if (!window_fixed_size_p (XWINDOW (s
), horiz_flag
, 0))
4218 for (s
= w
->prev
; !NILP (s
); s
= XWINDOW (s
)->prev
)
4219 if (!window_fixed_size_p (XWINDOW (s
), horiz_flag
, 0))
4224 /* Add delta1 lines or columns to this window, and to the parent,
4225 keeping things consistent while not affecting siblings. */
4226 XSETINT (CURSIZE (parent
), opht
+ delta1
);
4227 (*setsizefun
) (window
, XINT (*sizep
) + delta1
, 0);
4229 /* Squeeze out delta1 lines or columns from our parent,
4230 shriking this window and siblings proportionately.
4231 This brings parent back to correct size.
4232 Delta1 was calculated so this makes this window the desired size,
4233 taking it all out of the siblings. */
4234 (*setsizefun
) (parent
, opht
, 0);
4239 XSETFASTINT (p
->last_modified
, 0);
4240 XSETFASTINT (p
->last_overlay_modified
, 0);
4242 /* Adjust glyph matrices. */
4243 adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window
))));
4247 /* Adjust the size of WINDOW by DELTA, moving only its trailing edge.
4248 HORIZ_FLAG nonzero means adjust the width, moving the right edge.
4249 zero means adjust the height, moving the bottom edge.
4251 Following siblings of the selected window are resized to fulfill
4252 the size request. If they become too small in the process, they
4253 are not deleted; instead, we signal an error. */
4256 adjust_window_trailing_edge (window
, delta
, horiz_flag
)
4258 int delta
, horiz_flag
;
4260 Lisp_Object parent
, child
;
4262 Lisp_Object old_config
= Fcurrent_window_configuration (Qnil
);
4263 int delcount
= window_deletion_count
;
4265 /* Check values of window_min_width and window_min_height for
4267 check_min_window_sizes ();
4270 window
= Fselected_window ();
4272 CHECK_WINDOW (window
);
4274 /* Give up if this window cannot be resized. */
4275 if (window_fixed_size_p (XWINDOW (window
), horiz_flag
, 1))
4276 error ("Window is not resizable");
4280 Lisp_Object first_parallel
= Qnil
;
4284 /* This can happen if WINDOW on the previous iteration was
4285 at top level of the tree and we did not exit. */
4286 Fset_window_configuration (old_config
);
4287 error ("Specified window edge is fixed");
4290 p
= XWINDOW (window
);
4293 /* See if this level has windows in parallel in the specified
4294 direction. If so, set FIRST_PARALLEL to the first one. */
4297 if (! NILP (parent
) && !NILP (XWINDOW (parent
)->vchild
))
4298 first_parallel
= XWINDOW (parent
)->vchild
;
4302 if (! NILP (parent
) && !NILP (XWINDOW (parent
)->hchild
))
4303 first_parallel
= XWINDOW (parent
)->hchild
;
4306 /* If this level's succession is in the desired dimension,
4307 and this window is the last one, its trailing edge is fixed. */
4308 if (NILP (XWINDOW (window
)->next
) && NILP (first_parallel
))
4310 Fset_window_configuration (old_config
);
4311 error ("Specified window edge is fixed");
4314 /* Don't make this window too small. */
4315 if (XINT (CURSIZE (window
)) + delta
4316 < (horiz_flag
? window_min_width
: window_min_height
))
4318 Fset_window_configuration (old_config
);
4319 error ("Cannot adjust window size as specified");
4322 /* Clear out some redisplay caches. */
4323 XSETFASTINT (p
->last_modified
, 0);
4324 XSETFASTINT (p
->last_overlay_modified
, 0);
4326 /* Adjust this window's edge. */
4327 XSETINT (CURSIZE (window
),
4328 XINT (CURSIZE (window
)) + delta
);
4330 /* If this window has following siblings in the desired dimension,
4331 make them smaller, and exit the loop.
4333 (If we reach the top of the tree and can never do this,
4334 we will fail and report an error, above.) */
4335 if (NILP (first_parallel
))
4337 if (!NILP (p
->next
))
4339 /* This may happen for the minibuffer. In that case
4340 the window_deletion_count check below does not work. */
4341 if (XINT (CURSIZE (p
->next
)) - delta
<= 0)
4343 Fset_window_configuration (old_config
);
4344 error ("Cannot adjust window size as specified");
4347 XSETINT (CURBEG (p
->next
),
4348 XINT (CURBEG (p
->next
)) + delta
);
4349 size_window (p
->next
, XINT (CURSIZE (p
->next
)) - delta
,
4355 /* Here we have a chain of parallel siblings, in the other dimension.
4356 Change the size of the other siblings. */
4357 for (child
= first_parallel
;
4359 child
= XWINDOW (child
)->next
)
4360 if (! EQ (child
, window
))
4361 size_window (child
, XINT (CURSIZE (child
)) + delta
,
4367 /* If we made a window so small it got deleted,
4368 we failed. Report failure. */
4369 if (delcount
!= window_deletion_count
)
4371 Fset_window_configuration (old_config
);
4372 error ("Cannot adjust window size as specified");
4375 /* Adjust glyph matrices. */
4376 adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window
))));
4382 DEFUN ("adjust-window-trailing-edge", Fadjust_window_trailing_edge
,
4383 Sadjust_window_trailing_edge
, 3, 3, 0,
4384 doc
: /* Adjust the bottom or right edge of WINDOW by DELTA.
4385 If HORIZONTAL is non-nil, that means adjust the width, moving the right edge.
4386 Otherwise, adjust the height, moving the bottom edge.
4388 Following siblings of the selected window are resized to fulfill
4389 the size request. If they become too small in the process, they
4390 are not deleted; instead, we signal an error. */)
4391 (window
, delta
, horizontal
)
4392 Lisp_Object window
, delta
, horizontal
;
4394 CHECK_NUMBER (delta
);
4395 adjust_window_trailing_edge (window
, XINT (delta
), !NILP (horizontal
));
4397 if (! NILP (Vwindow_configuration_change_hook
))
4398 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
4405 /***********************************************************************
4406 Resizing Mini-Windows
4407 ***********************************************************************/
4409 static void shrink_window_lowest_first
P_ ((struct window
*, int));
4411 enum save_restore_action
4418 static int save_restore_orig_size
P_ ((struct window
*,
4419 enum save_restore_action
));
4421 /* Shrink windows rooted in window W to HEIGHT. Take the space needed
4422 from lowest windows first. */
4425 shrink_window_lowest_first (w
, height
)
4433 xassert (!MINI_WINDOW_P (w
));
4435 /* Set redisplay hints. */
4436 XSETFASTINT (w
->last_modified
, 0);
4437 XSETFASTINT (w
->last_overlay_modified
, 0);
4438 windows_or_buffers_changed
++;
4439 FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w
))) = 1;
4441 old_height
= XFASTINT (w
->total_lines
);
4442 XSETFASTINT (w
->total_lines
, height
);
4444 if (!NILP (w
->hchild
))
4446 for (child
= w
->hchild
; !NILP (child
); child
= c
->next
)
4448 c
= XWINDOW (child
);
4449 c
->top_line
= w
->top_line
;
4450 shrink_window_lowest_first (c
, height
);
4453 else if (!NILP (w
->vchild
))
4455 Lisp_Object last_child
;
4456 int delta
= old_height
- height
;
4461 /* Find the last child. We are taking space from lowest windows
4462 first, so we iterate over children from the last child
4464 for (child
= w
->vchild
; !NILP (child
); child
= XWINDOW (child
)->next
)
4467 /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */
4468 for (child
= last_child
; delta
&& !NILP (child
); child
= c
->prev
)
4472 c
= XWINDOW (child
);
4473 this_one
= XFASTINT (c
->total_lines
) - MIN_SAFE_WINDOW_HEIGHT
;
4475 if (this_one
> delta
)
4478 shrink_window_lowest_first (c
, XFASTINT (c
->total_lines
) - this_one
);
4482 /* Compute new positions. */
4483 last_top
= XINT (w
->top_line
);
4484 for (child
= w
->vchild
; !NILP (child
); child
= c
->next
)
4486 c
= XWINDOW (child
);
4487 c
->top_line
= make_number (last_top
);
4488 shrink_window_lowest_first (c
, XFASTINT (c
->total_lines
));
4489 last_top
+= XFASTINT (c
->total_lines
);
4495 /* Save, restore, or check positions and sizes in the window tree
4496 rooted at W. ACTION says what to do.
4498 If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and
4499 orig_total_lines members are valid for all windows in the window
4500 tree. Value is non-zero if they are valid.
4502 If ACTION is SAVE_ORIG_SIZES, save members top and height in
4503 orig_top_line and orig_total_lines for all windows in the tree.
4505 If ACTION is RESTORE_ORIG_SIZES, restore top and height from values
4506 stored in orig_top_line and orig_total_lines for all windows. */
4509 save_restore_orig_size (w
, action
)
4511 enum save_restore_action action
;
4517 if (!NILP (w
->hchild
))
4519 if (!save_restore_orig_size (XWINDOW (w
->hchild
), action
))
4522 else if (!NILP (w
->vchild
))
4524 if (!save_restore_orig_size (XWINDOW (w
->vchild
), action
))
4530 case CHECK_ORIG_SIZES
:
4531 if (!INTEGERP (w
->orig_top_line
) || !INTEGERP (w
->orig_total_lines
))
4535 case SAVE_ORIG_SIZES
:
4536 w
->orig_top_line
= w
->top_line
;
4537 w
->orig_total_lines
= w
->total_lines
;
4538 XSETFASTINT (w
->last_modified
, 0);
4539 XSETFASTINT (w
->last_overlay_modified
, 0);
4542 case RESTORE_ORIG_SIZES
:
4543 xassert (INTEGERP (w
->orig_top_line
) && INTEGERP (w
->orig_total_lines
));
4544 w
->top_line
= w
->orig_top_line
;
4545 w
->total_lines
= w
->orig_total_lines
;
4546 w
->orig_total_lines
= w
->orig_top_line
= Qnil
;
4547 XSETFASTINT (w
->last_modified
, 0);
4548 XSETFASTINT (w
->last_overlay_modified
, 0);
4555 w
= NILP (w
->next
) ? NULL
: XWINDOW (w
->next
);
4562 /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can
4563 without deleting other windows. */
4566 grow_mini_window (w
, delta
)
4570 struct frame
*f
= XFRAME (w
->frame
);
4571 struct window
*root
;
4573 xassert (MINI_WINDOW_P (w
));
4574 xassert (delta
>= 0);
4576 /* Check values of window_min_width and window_min_height for
4578 check_min_window_sizes ();
4580 /* Compute how much we can enlarge the mini-window without deleting
4582 root
= XWINDOW (FRAME_ROOT_WINDOW (f
));
4585 int min_height
= window_min_size (root
, 0, 0, 0);
4586 if (XFASTINT (root
->total_lines
) - delta
< min_height
)
4587 /* Note that the root window may already be smaller than
4589 delta
= max (0, XFASTINT (root
->total_lines
) - min_height
);
4594 /* Save original window sizes and positions, if not already done. */
4595 if (!save_restore_orig_size (root
, CHECK_ORIG_SIZES
))
4596 save_restore_orig_size (root
, SAVE_ORIG_SIZES
);
4598 /* Shrink other windows. */
4599 shrink_window_lowest_first (root
, XFASTINT (root
->total_lines
) - delta
);
4601 /* Grow the mini-window. */
4602 w
->top_line
= make_number (XFASTINT (root
->top_line
) + XFASTINT (root
->total_lines
));
4603 w
->total_lines
= make_number (XFASTINT (w
->total_lines
) + delta
);
4604 XSETFASTINT (w
->last_modified
, 0);
4605 XSETFASTINT (w
->last_overlay_modified
, 0);
4612 /* Shrink mini-window W. If there is recorded info about window sizes
4613 before a call to grow_mini_window, restore recorded window sizes.
4614 Otherwise, if the mini-window is higher than 1 line, resize it to 1
4618 shrink_mini_window (w
)
4621 struct frame
*f
= XFRAME (w
->frame
);
4622 struct window
*root
= XWINDOW (FRAME_ROOT_WINDOW (f
));
4624 if (save_restore_orig_size (root
, CHECK_ORIG_SIZES
))
4626 save_restore_orig_size (root
, RESTORE_ORIG_SIZES
);
4628 FRAME_WINDOW_SIZES_CHANGED (f
) = 1;
4629 windows_or_buffers_changed
= 1;
4631 else if (XFASTINT (w
->total_lines
) > 1)
4633 /* Distribute the additional lines of the mini-window
4634 among the other windows. */
4636 XSETWINDOW (window
, w
);
4637 enlarge_window (window
, 1 - XFASTINT (w
->total_lines
), 0);
4643 /* Mark window cursors off for all windows in the window tree rooted
4644 at W by setting their phys_cursor_on_p flag to zero. Called from
4645 xterm.c, e.g. when a frame is cleared and thereby all cursors on
4646 the frame are cleared. */
4649 mark_window_cursors_off (w
)
4654 if (!NILP (w
->hchild
))
4655 mark_window_cursors_off (XWINDOW (w
->hchild
));
4656 else if (!NILP (w
->vchild
))
4657 mark_window_cursors_off (XWINDOW (w
->vchild
));
4659 w
->phys_cursor_on_p
= 0;
4661 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
4666 /* Return number of lines of text (not counting mode lines) in W. */
4669 window_internal_height (w
)
4672 int ht
= XFASTINT (w
->total_lines
);
4674 if (!MINI_WINDOW_P (w
))
4676 if (!NILP (w
->parent
)
4677 || !NILP (w
->vchild
)
4678 || !NILP (w
->hchild
)
4681 || WINDOW_WANTS_MODELINE_P (w
))
4684 if (WINDOW_WANTS_HEADER_LINE_P (w
))
4692 /* Return the number of columns in W.
4693 Don't count columns occupied by scroll bars or the vertical bar
4694 separating W from the sibling to its right. */
4697 window_box_text_cols (w
)
4700 struct frame
*f
= XFRAME (WINDOW_FRAME (w
));
4701 int width
= XINT (w
->total_cols
);
4703 if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w
))
4704 /* Scroll bars occupy a few columns. */
4705 width
-= WINDOW_CONFIG_SCROLL_BAR_COLS (w
);
4706 else if (!FRAME_WINDOW_P (f
)
4707 && !WINDOW_RIGHTMOST_P (w
) && !WINDOW_FULL_WIDTH_P (w
))
4708 /* The column of `|' characters separating side-by-side windows
4709 occupies one column only. */
4712 if (FRAME_WINDOW_P (f
))
4713 /* On window-systems, fringes and display margins cannot be
4714 used for normal text. */
4715 width
-= (WINDOW_FRINGE_COLS (w
)
4716 + WINDOW_LEFT_MARGIN_COLS (w
)
4717 + WINDOW_RIGHT_MARGIN_COLS (w
));
4723 /************************************************************************
4725 ***********************************************************************/
4727 /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll
4728 N screen-fulls, which is defined as the height of the window minus
4729 next_screen_context_lines. If WHOLE is zero, scroll up N lines
4730 instead. Negative values of N mean scroll down. NOERROR non-zero
4731 means don't signal an error if we try to move over BEGV or ZV,
4735 window_scroll (window
, n
, whole
, noerror
)
4743 /* If we must, use the pixel-based version which is much slower than
4744 the line-based one but can handle varying line heights. */
4745 if (FRAME_WINDOW_P (XFRAME (XWINDOW (window
)->frame
)))
4746 window_scroll_pixel_based (window
, n
, whole
, noerror
);
4748 window_scroll_line_based (window
, n
, whole
, noerror
);
4754 /* Implementation of window_scroll that works based on pixel line
4755 heights. See the comment of window_scroll for parameter
4759 window_scroll_pixel_based (window
, n
, whole
, noerror
)
4766 struct window
*w
= XWINDOW (window
);
4767 struct text_pos start
;
4769 int this_scroll_margin
;
4770 /* True if we fiddled the window vscroll field without really scrolling. */
4773 SET_TEXT_POS_FROM_MARKER (start
, w
->start
);
4775 /* If PT is not visible in WINDOW, move back one half of
4776 the screen. Allow PT to be partially visible, otherwise
4777 something like (scroll-down 1) with PT in the line before
4778 the partially visible one would recenter. */
4779 tem
= Fpos_visible_in_window_p (make_number (PT
), window
, Qt
);
4782 /* Move backward half the height of the window. Performance note:
4783 vmotion used here is about 10% faster, but would give wrong
4784 results for variable height lines. */
4785 init_iterator (&it
, w
, PT
, PT_BYTE
, NULL
, DEFAULT_FACE_ID
);
4786 it
.current_y
= it
.last_visible_y
;
4787 move_it_vertically_backward (&it
, window_box_height (w
) / 2);
4789 /* The function move_iterator_vertically may move over more than
4790 the specified y-distance. If it->w is small, e.g. a
4791 mini-buffer window, we may end up in front of the window's
4792 display area. This is the case when Start displaying at the
4793 start of the line containing PT in this case. */
4794 if (it
.current_y
<= 0)
4796 init_iterator (&it
, w
, PT
, PT_BYTE
, NULL
, DEFAULT_FACE_ID
);
4797 move_it_vertically_backward (&it
, 0);
4801 start
= it
.current
.pos
;
4803 else if (auto_window_vscroll_p
)
4805 if (tem
= XCAR (XCDR (XCDR (tem
))), CONSP (tem
))
4808 int dy
= WINDOW_FRAME_LINE_HEIGHT (w
);
4810 dy
= max ((window_box_height (w
)
4811 - next_screen_context_lines
* dy
),
4815 if (n
< 0 && (px
= XINT (XCAR (tem
))) > 0)
4817 px
= max (0, -w
->vscroll
- min (px
, -dy
));
4818 Fset_window_vscroll (window
, make_number (px
), Qt
);
4821 if (n
> 0 && (px
= XINT (XCDR (tem
))) > 0)
4823 px
= max (0, -w
->vscroll
+ min (px
, dy
));
4824 Fset_window_vscroll (window
, make_number (px
), Qt
);
4828 Fset_window_vscroll (window
, make_number (0), Qt
);
4831 /* If scroll_preserve_screen_position is non-nil, we try to set
4832 point in the same window line as it is now, so get that line. */
4833 if (!NILP (Vscroll_preserve_screen_position
))
4835 /* We preserve the goal pixel coordinate across consecutive
4836 calls to scroll-up or scroll-down. This avoids the
4837 possibility of point becoming "stuck" on a tall line when
4838 scrolling by one line. */
4839 if (window_scroll_pixel_based_preserve_y
< 0
4840 || (!EQ (current_kboard
->Vlast_command
, Qscroll_up
)
4841 && !EQ (current_kboard
->Vlast_command
, Qscroll_down
)))
4843 start_display (&it
, w
, start
);
4844 move_it_to (&it
, PT
, -1, -1, -1, MOVE_TO_POS
);
4845 window_scroll_pixel_based_preserve_y
= it
.current_y
;
4849 window_scroll_pixel_based_preserve_y
= -1;
4851 /* Move iterator it from start the specified distance forward or
4852 backward. The result is the new window start. */
4853 start_display (&it
, w
, start
);
4856 int start_pos
= IT_CHARPOS (it
);
4857 int dy
= WINDOW_FRAME_LINE_HEIGHT (w
);
4858 dy
= max ((window_box_height (w
)
4859 - next_screen_context_lines
* dy
),
4862 /* Note that move_it_vertically always moves the iterator to the
4863 start of a line. So, if the last line doesn't have a newline,
4864 we would end up at the start of the line ending at ZV. */
4867 move_it_vertically_backward (&it
, -dy
);
4868 /* Ensure we actually does move, e.g. in case we are currently
4869 looking at an image that is taller that the window height. */
4870 while (start_pos
== IT_CHARPOS (it
)
4871 && start_pos
> BEGV
)
4872 move_it_by_lines (&it
, -1, 1);
4876 move_it_to (&it
, ZV
, -1, it
.current_y
+ dy
, -1,
4877 MOVE_TO_POS
| MOVE_TO_Y
);
4878 /* Ensure we actually does move, e.g. in case we are currently
4879 looking at an image that is taller that the window height. */
4880 while (start_pos
== IT_CHARPOS (it
)
4882 move_it_by_lines (&it
, 1, 1);
4886 move_it_by_lines (&it
, n
, 1);
4888 /* We failed if we find ZV is already on the screen (scrolling up,
4889 means there's nothing past the end), or if we can't start any
4890 earlier (scrolling down, means there's nothing past the top). */
4891 if ((n
> 0 && IT_CHARPOS (it
) == ZV
)
4892 || (n
< 0 && IT_CHARPOS (it
) == CHARPOS (start
)))
4894 if (IT_CHARPOS (it
) == ZV
)
4896 if (it
.current_y
< it
.last_visible_y
4897 && (it
.current_y
+ it
.max_ascent
+ it
.max_descent
4898 > it
.last_visible_y
))
4900 /* The last line was only partially visible, make it fully
4902 w
->vscroll
= (it
.last_visible_y
4903 - it
.current_y
+ it
.max_ascent
+ it
.max_descent
);
4904 adjust_glyphs (it
.f
);
4908 else if (n
< 0) /* could happen with empty buffers */
4909 Fsignal (Qbeginning_of_buffer
, Qnil
);
4911 Fsignal (Qend_of_buffer
, Qnil
);
4915 if (w
->vscroll
!= 0)
4916 /* The first line was only partially visible, make it fully
4922 Fsignal (Qbeginning_of_buffer
, Qnil
);
4925 /* If control gets here, then we vscrolled. */
4927 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
4929 /* Don't try to change the window start below. */
4935 int pos
= IT_CHARPOS (it
);
4938 /* If in the middle of a multi-glyph character move forward to
4939 the next character. */
4940 if (in_display_vector_p (&it
))
4943 move_it_to (&it
, pos
, -1, -1, -1, MOVE_TO_POS
);
4946 /* Set the window start, and set up the window for redisplay. */
4947 set_marker_restricted (w
->start
, make_number (pos
),
4949 bytepos
= XMARKER (w
->start
)->bytepos
;
4950 w
->start_at_line_beg
= ((pos
== BEGV
|| FETCH_BYTE (bytepos
- 1) == '\n')
4952 w
->update_mode_line
= Qt
;
4953 XSETFASTINT (w
->last_modified
, 0);
4954 XSETFASTINT (w
->last_overlay_modified
, 0);
4955 /* Set force_start so that redisplay_window will run the
4956 window-scroll-functions. */
4957 w
->force_start
= Qt
;
4960 /* The rest of this function uses current_y in a nonstandard way,
4961 not including the height of the header line if any. */
4962 it
.current_y
= it
.vpos
= 0;
4964 /* Move PT out of scroll margins.
4965 This code wants current_y to be zero at the window start position
4966 even if there is a header line. */
4967 this_scroll_margin
= max (0, scroll_margin
);
4968 this_scroll_margin
= min (this_scroll_margin
, XFASTINT (w
->total_lines
) / 4);
4969 this_scroll_margin
*= FRAME_LINE_HEIGHT (it
.f
);
4973 /* We moved the window start towards ZV, so PT may be now
4974 in the scroll margin at the top. */
4975 move_it_to (&it
, PT
, -1, -1, -1, MOVE_TO_POS
);
4976 if (IT_CHARPOS (it
) == PT
&& it
.current_y
>= this_scroll_margin
4977 && (NILP (Vscroll_preserve_screen_position
)
4978 || EQ (Vscroll_preserve_screen_position
, Qt
)))
4979 /* We found PT at a legitimate height. Leave it alone. */
4981 else if (window_scroll_pixel_based_preserve_y
>= 0)
4983 /* If we have a header line, take account of it.
4984 This is necessary because we set it.current_y to 0, above. */
4985 move_it_to (&it
, -1, -1,
4986 window_scroll_pixel_based_preserve_y
4987 - (WINDOW_WANTS_HEADER_LINE_P (w
) ? 1 : 0 ),
4989 SET_PT_BOTH (IT_CHARPOS (it
), IT_BYTEPOS (it
));
4993 while (it
.current_y
< this_scroll_margin
)
4995 int prev
= it
.current_y
;
4996 move_it_by_lines (&it
, 1, 1);
4997 if (prev
== it
.current_y
)
5000 SET_PT_BOTH (IT_CHARPOS (it
), IT_BYTEPOS (it
));
5005 int charpos
, bytepos
;
5008 /* Save our position, for the
5009 window_scroll_pixel_based_preserve_y case. */
5010 charpos
= IT_CHARPOS (it
);
5011 bytepos
= IT_BYTEPOS (it
);
5013 /* We moved the window start towards BEGV, so PT may be now
5014 in the scroll margin at the bottom. */
5015 move_it_to (&it
, PT
, -1,
5016 (it
.last_visible_y
- CURRENT_HEADER_LINE_HEIGHT (w
)
5017 - this_scroll_margin
- 1),
5019 MOVE_TO_POS
| MOVE_TO_Y
);
5021 /* Save our position, in case it's correct. */
5022 charpos
= IT_CHARPOS (it
);
5023 bytepos
= IT_BYTEPOS (it
);
5025 /* See if point is on a partially visible line at the end. */
5026 if (it
.what
== IT_EOB
)
5027 partial_p
= it
.current_y
+ it
.ascent
+ it
.descent
> it
.last_visible_y
;
5030 move_it_by_lines (&it
, 1, 1);
5031 partial_p
= it
.current_y
> it
.last_visible_y
;
5034 if (charpos
== PT
&& !partial_p
5035 && (NILP (Vscroll_preserve_screen_position
)
5036 || EQ (Vscroll_preserve_screen_position
, Qt
)))
5037 /* We found PT before we found the display margin, so PT is ok. */
5039 else if (window_scroll_pixel_based_preserve_y
>= 0)
5041 SET_TEXT_POS_FROM_MARKER (start
, w
->start
);
5042 start_display (&it
, w
, start
);
5043 /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT
5044 here because we called start_display again and did not
5045 alter it.current_y this time. */
5046 move_it_to (&it
, -1, -1, window_scroll_pixel_based_preserve_y
, -1,
5048 SET_PT_BOTH (IT_CHARPOS (it
), IT_BYTEPOS (it
));
5053 /* The last line was only partially visible, so back up two
5054 lines to make sure we're on a fully visible line. */
5056 move_it_by_lines (&it
, -2, 0);
5057 SET_PT_BOTH (IT_CHARPOS (it
), IT_BYTEPOS (it
));
5060 /* No, the position we saved is OK, so use it. */
5061 SET_PT_BOTH (charpos
, bytepos
);
5067 /* Implementation of window_scroll that works based on screen lines.
5068 See the comment of window_scroll for parameter descriptions. */
5071 window_scroll_line_based (window
, n
, whole
, noerror
)
5077 register struct window
*w
= XWINDOW (window
);
5078 register int opoint
= PT
, opoint_byte
= PT_BYTE
;
5079 register int pos
, pos_byte
;
5080 register int ht
= window_internal_height (w
);
5081 register Lisp_Object tem
;
5085 struct position posit
;
5088 /* If scrolling screen-fulls, compute the number of lines to
5089 scroll from the window's height. */
5091 n
*= max (1, ht
- next_screen_context_lines
);
5093 startpos
= marker_position (w
->start
);
5095 posit
= *compute_motion (startpos
, 0, 0, 0,
5097 -1, XINT (w
->hscroll
),
5099 original_vpos
= posit
.vpos
;
5101 XSETFASTINT (tem
, PT
);
5102 tem
= Fpos_visible_in_window_p (tem
, window
, Qnil
);
5106 Fvertical_motion (make_number (- (ht
/ 2)), window
);
5111 lose
= n
< 0 && PT
== BEGV
;
5112 Fvertical_motion (make_number (n
), window
);
5116 SET_PT_BOTH (opoint
, opoint_byte
);
5123 Fsignal (Qbeginning_of_buffer
, Qnil
);
5128 int this_scroll_margin
= scroll_margin
;
5130 /* Don't use a scroll margin that is negative or too large. */
5131 if (this_scroll_margin
< 0)
5132 this_scroll_margin
= 0;
5134 if (XINT (w
->total_lines
) < 4 * scroll_margin
)
5135 this_scroll_margin
= XINT (w
->total_lines
) / 4;
5137 set_marker_restricted_both (w
->start
, w
->buffer
, pos
, pos_byte
);
5138 w
->start_at_line_beg
= bolp
;
5139 w
->update_mode_line
= Qt
;
5140 XSETFASTINT (w
->last_modified
, 0);
5141 XSETFASTINT (w
->last_overlay_modified
, 0);
5142 /* Set force_start so that redisplay_window will run
5143 the window-scroll-functions. */
5144 w
->force_start
= Qt
;
5146 if (!NILP (Vscroll_preserve_screen_position
)
5147 && (whole
|| !EQ (Vscroll_preserve_screen_position
, Qt
)))
5149 SET_PT_BOTH (pos
, pos_byte
);
5150 Fvertical_motion (make_number (original_vpos
), window
);
5152 /* If we scrolled forward, put point enough lines down
5153 that it is outside the scroll margin. */
5158 if (this_scroll_margin
> 0)
5160 SET_PT_BOTH (pos
, pos_byte
);
5161 Fvertical_motion (make_number (this_scroll_margin
), window
);
5167 if (top_margin
<= opoint
)
5168 SET_PT_BOTH (opoint
, opoint_byte
);
5169 else if (!NILP (Vscroll_preserve_screen_position
))
5171 SET_PT_BOTH (pos
, pos_byte
);
5172 Fvertical_motion (make_number (original_vpos
), window
);
5175 SET_PT (top_margin
);
5181 /* If we scrolled backward, put point near the end of the window
5182 but not within the scroll margin. */
5183 SET_PT_BOTH (pos
, pos_byte
);
5184 tem
= Fvertical_motion (make_number (ht
- this_scroll_margin
), window
);
5185 if (XFASTINT (tem
) == ht
- this_scroll_margin
)
5188 bottom_margin
= PT
+ 1;
5190 if (bottom_margin
> opoint
)
5191 SET_PT_BOTH (opoint
, opoint_byte
);
5194 if (!NILP (Vscroll_preserve_screen_position
))
5196 SET_PT_BOTH (pos
, pos_byte
);
5197 Fvertical_motion (make_number (original_vpos
), window
);
5200 Fvertical_motion (make_number (-1), window
);
5209 Fsignal (Qend_of_buffer
, Qnil
);
5214 /* Scroll selected_window up or down. If N is nil, scroll a
5215 screen-full which is defined as the height of the window minus
5216 next_screen_context_lines. If N is the symbol `-', scroll.
5217 DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll
5218 up. This is the guts of Fscroll_up and Fscroll_down. */
5221 scroll_command (n
, direction
)
5225 int count
= SPECPDL_INDEX ();
5227 xassert (abs (direction
) == 1);
5229 /* If selected window's buffer isn't current, make it current for
5230 the moment. But don't screw up if window_scroll gets an error. */
5231 if (XBUFFER (XWINDOW (selected_window
)->buffer
) != current_buffer
)
5233 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
5234 Fset_buffer (XWINDOW (selected_window
)->buffer
);
5236 /* Make redisplay consider other windows than just selected_window. */
5237 ++windows_or_buffers_changed
;
5241 window_scroll (selected_window
, direction
, 1, 0);
5242 else if (EQ (n
, Qminus
))
5243 window_scroll (selected_window
, -direction
, 1, 0);
5246 n
= Fprefix_numeric_value (n
);
5247 window_scroll (selected_window
, XINT (n
) * direction
, 0, 0);
5250 unbind_to (count
, Qnil
);
5253 DEFUN ("scroll-up", Fscroll_up
, Sscroll_up
, 0, 1, "P",
5254 doc
: /* Scroll text of current window upward ARG lines.
5255 If ARG is omitted or nil, scroll upward by a near full screen.
5256 A near full screen is `next-screen-context-lines' less than a full screen.
5257 Negative ARG means scroll downward.
5258 If ARG is the atom `-', scroll downward by nearly full screen.
5259 When calling from a program, supply as argument a number, nil, or `-'. */)
5263 scroll_command (arg
, 1);
5267 DEFUN ("scroll-down", Fscroll_down
, Sscroll_down
, 0, 1, "P",
5268 doc
: /* Scroll text of current window down ARG lines.
5269 If ARG is omitted or nil, scroll down by a near full screen.
5270 A near full screen is `next-screen-context-lines' less than a full screen.
5271 Negative ARG means scroll upward.
5272 If ARG is the atom `-', scroll upward by nearly full screen.
5273 When calling from a program, supply as argument a number, nil, or `-'. */)
5277 scroll_command (arg
, -1);
5281 DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling
, Sother_window_for_scrolling
, 0, 0, 0,
5282 doc
: /* Return the other window for \"other window scroll\" commands.
5283 If `other-window-scroll-buffer' is non-nil, a window
5284 showing that buffer is used.
5285 If in the minibuffer, `minibuffer-scroll-window' if non-nil
5286 specifies the window. This takes precedence over
5287 `other-window-scroll-buffer'. */)
5292 if (MINI_WINDOW_P (XWINDOW (selected_window
))
5293 && !NILP (Vminibuf_scroll_window
))
5294 window
= Vminibuf_scroll_window
;
5295 /* If buffer is specified, scroll that buffer. */
5296 else if (!NILP (Vother_window_scroll_buffer
))
5298 window
= Fget_buffer_window (Vother_window_scroll_buffer
, Qnil
);
5300 window
= Fdisplay_buffer (Vother_window_scroll_buffer
, Qt
, Qnil
);
5304 /* Nothing specified; look for a neighboring window on the same
5306 window
= Fnext_window (selected_window
, Qnil
, Qnil
);
5308 if (EQ (window
, selected_window
))
5309 /* That didn't get us anywhere; look for a window on another
5312 window
= Fnext_window (window
, Qnil
, Qt
);
5313 while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window
))))
5314 && ! EQ (window
, selected_window
));
5317 CHECK_LIVE_WINDOW (window
);
5319 if (EQ (window
, selected_window
))
5320 error ("There is no other window");
5325 DEFUN ("scroll-other-window", Fscroll_other_window
, Sscroll_other_window
, 0, 1, "P",
5326 doc
: /* Scroll next window upward ARG lines; or near full screen if no ARG.
5327 A near full screen is `next-screen-context-lines' less than a full screen.
5328 The next window is the one below the current one; or the one at the top
5329 if the current one is at the bottom. Negative ARG means scroll downward.
5330 If ARG is the atom `-', scroll downward by nearly full screen.
5331 When calling from a program, supply as argument a number, nil, or `-'.
5333 If `other-window-scroll-buffer' is non-nil, scroll the window
5334 showing that buffer, popping the buffer up if necessary.
5335 If in the minibuffer, `minibuffer-scroll-window' if non-nil
5336 specifies the window to scroll. This takes precedence over
5337 `other-window-scroll-buffer'. */)
5343 int count
= SPECPDL_INDEX ();
5345 window
= Fother_window_for_scrolling ();
5346 w
= XWINDOW (window
);
5348 /* Don't screw up if window_scroll gets an error. */
5349 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
5350 ++windows_or_buffers_changed
;
5352 Fset_buffer (w
->buffer
);
5353 SET_PT (marker_position (w
->pointm
));
5356 window_scroll (window
, 1, 1, 1);
5357 else if (EQ (arg
, Qminus
))
5358 window_scroll (window
, -1, 1, 1);
5364 window_scroll (window
, XINT (arg
), 0, 1);
5367 set_marker_both (w
->pointm
, Qnil
, PT
, PT_BYTE
);
5368 unbind_to (count
, Qnil
);
5373 DEFUN ("scroll-left", Fscroll_left
, Sscroll_left
, 0, 2, "P\np",
5374 doc
: /* Scroll selected window display ARG columns left.
5375 Default for ARG is window width minus 2.
5376 Value is the total amount of leftward horizontal scrolling in
5377 effect after the change.
5378 If SET_MINIMUM is non-nil, the new scroll amount becomes the
5379 lower bound for automatic scrolling, i.e. automatic scrolling
5380 will not scroll a window to a column less than the value returned
5381 by this function. This happens in an interactive call. */)
5383 register Lisp_Object arg
, set_minimum
;
5387 struct window
*w
= XWINDOW (selected_window
);
5390 XSETFASTINT (arg
, window_box_text_cols (w
) - 2);
5392 arg
= Fprefix_numeric_value (arg
);
5394 hscroll
= XINT (w
->hscroll
) + XINT (arg
);
5395 result
= Fset_window_hscroll (selected_window
, make_number (hscroll
));
5397 if (!NILP (set_minimum
))
5398 w
->min_hscroll
= w
->hscroll
;
5403 DEFUN ("scroll-right", Fscroll_right
, Sscroll_right
, 0, 2, "P\np",
5404 doc
: /* Scroll selected window display ARG columns right.
5405 Default for ARG is window width minus 2.
5406 Value is the total amount of leftward horizontal scrolling in
5407 effect after the change.
5408 If SET_MINIMUM is non-nil, the new scroll amount becomes the
5409 lower bound for automatic scrolling, i.e. automatic scrolling
5410 will not scroll a window to a column less than the value returned
5411 by this function. This happens in an interactive call. */)
5413 register Lisp_Object arg
, set_minimum
;
5417 struct window
*w
= XWINDOW (selected_window
);
5420 XSETFASTINT (arg
, window_box_text_cols (w
) - 2);
5422 arg
= Fprefix_numeric_value (arg
);
5424 hscroll
= XINT (w
->hscroll
) - XINT (arg
);
5425 result
= Fset_window_hscroll (selected_window
, make_number (hscroll
));
5427 if (!NILP (set_minimum
))
5428 w
->min_hscroll
= w
->hscroll
;
5433 DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window
, Sminibuffer_selected_window
, 0, 0, 0,
5434 doc
: /* Return the window which was selected when entering the minibuffer.
5435 Returns nil, if current window is not a minibuffer window. */)
5438 if (minibuf_level
> 0
5439 && MINI_WINDOW_P (XWINDOW (selected_window
))
5440 && WINDOW_LIVE_P (minibuf_selected_window
))
5441 return minibuf_selected_window
;
5446 /* Value is the number of lines actually displayed in window W,
5447 as opposed to its height. */
5450 displayed_window_lines (w
)
5454 struct text_pos start
;
5455 int height
= window_box_height (w
);
5456 struct buffer
*old_buffer
;
5459 if (XBUFFER (w
->buffer
) != current_buffer
)
5461 old_buffer
= current_buffer
;
5462 set_buffer_internal (XBUFFER (w
->buffer
));
5467 /* In case W->start is out of the accessible range, do something
5468 reasonable. This happens in Info mode when Info-scroll-down
5469 calls (recenter -1) while W->start is 1. */
5470 if (XMARKER (w
->start
)->charpos
< BEGV
)
5471 SET_TEXT_POS (start
, BEGV
, BEGV_BYTE
);
5472 else if (XMARKER (w
->start
)->charpos
> ZV
)
5473 SET_TEXT_POS (start
, ZV
, ZV_BYTE
);
5475 SET_TEXT_POS_FROM_MARKER (start
, w
->start
);
5477 start_display (&it
, w
, start
);
5478 move_it_vertically (&it
, height
);
5479 bottom_y
= line_bottom_y (&it
);
5481 /* rms: On a non-window display,
5482 the value of it.vpos at the bottom of the screen
5483 seems to be 1 larger than window_box_height (w).
5484 This kludge fixes a bug whereby (move-to-window-line -1)
5485 when ZV is on the last screen line
5486 moves to the previous screen line instead of the last one. */
5487 if (! FRAME_WINDOW_P (XFRAME (w
->frame
)))
5490 /* Add in empty lines at the bottom of the window. */
5491 if (bottom_y
< height
)
5493 int uy
= FRAME_LINE_HEIGHT (it
.f
);
5494 it
.vpos
+= (height
- bottom_y
+ uy
- 1) / uy
;
5498 set_buffer_internal (old_buffer
);
5504 DEFUN ("recenter", Frecenter
, Srecenter
, 0, 1, "P",
5505 doc
: /* Center point in window and redisplay frame.
5506 With prefix argument ARG, recenter putting point on screen line ARG
5507 relative to the current window. If ARG is negative, it counts up from the
5508 bottom of the window. (ARG should be less than the height of the window.)
5510 If ARG is omitted or nil, erase the entire frame and then
5511 redraw with point in the center of the current window.
5512 Just C-u as prefix means put point in the center of the window
5513 and redisplay normally--don't erase and redraw the frame. */)
5515 register Lisp_Object arg
;
5517 struct window
*w
= XWINDOW (selected_window
);
5518 struct buffer
*buf
= XBUFFER (w
->buffer
);
5519 struct buffer
*obuf
= current_buffer
;
5521 int charpos
, bytepos
;
5523 int this_scroll_margin
;
5525 /* If redisplay is suppressed due to an error, try again. */
5526 obuf
->display_error_modiff
= 0;
5532 /* Invalidate pixel data calculated for all compositions. */
5533 for (i
= 0; i
< n_compositions
; i
++)
5534 composition_table
[i
]->font
= NULL
;
5536 Fredraw_frame (w
->frame
);
5537 SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w
)));
5540 else if (CONSP (arg
)) /* Just C-u. */
5544 arg
= Fprefix_numeric_value (arg
);
5549 set_buffer_internal (buf
);
5551 /* Do this after making BUF current
5552 in case scroll_margin is buffer-local. */
5553 this_scroll_margin
= max (0, scroll_margin
);
5554 this_scroll_margin
= min (this_scroll_margin
,
5555 XFASTINT (w
->total_lines
) / 4);
5557 /* Handle centering on a graphical frame specially. Such frames can
5558 have variable-height lines and centering point on the basis of
5559 line counts would lead to strange effects. */
5560 if (FRAME_WINDOW_P (XFRAME (w
->frame
)))
5567 SET_TEXT_POS (pt
, PT
, PT_BYTE
);
5568 start_display (&it
, w
, pt
);
5569 move_it_vertically_backward (&it
, window_box_height (w
) / 2);
5570 charpos
= IT_CHARPOS (it
);
5571 bytepos
= IT_BYTEPOS (it
);
5578 int extra_line_spacing
;
5579 int h
= window_box_height (w
);
5581 iarg
= - max (-iarg
, this_scroll_margin
);
5583 SET_TEXT_POS (pt
, PT
, PT_BYTE
);
5584 start_display (&it
, w
, pt
);
5586 /* Be sure we have the exact height of the full line containing PT. */
5587 move_it_by_lines (&it
, 0, 1);
5589 /* The amount of pixels we have to move back is the window
5590 height minus what's displayed in the line containing PT,
5591 and the lines below. */
5594 move_it_by_lines (&it
, nlines
, 1);
5596 if (it
.vpos
== nlines
)
5600 /* Last line has no newline */
5601 h
-= line_bottom_y (&it
);
5605 /* Don't reserve space for extra line spacing of last line. */
5606 extra_line_spacing
= it
.max_extra_line_spacing
;
5608 /* If we can't move down NLINES lines because we hit
5609 the end of the buffer, count in some empty lines. */
5610 if (it
.vpos
< nlines
)
5613 extra_line_spacing
= it
.extra_line_spacing
;
5614 h
-= nlines
* (FRAME_LINE_HEIGHT (it
.f
) + extra_line_spacing
);
5619 /* Now find the new top line (starting position) of the window. */
5620 start_display (&it
, w
, pt
);
5622 move_it_vertically_backward (&it
, h
);
5624 /* If extra line spacing is present, we may move too far
5625 back. This causes the last line to be only partially
5626 visible (which triggers redisplay to recenter that line
5627 in the middle), so move forward.
5628 But ignore extra line spacing on last line, as it is not
5629 considered to be part of the visible height of the line.
5631 h
+= extra_line_spacing
;
5632 while (-it
.current_y
> h
)
5633 move_it_by_lines (&it
, 1, 1);
5635 charpos
= IT_CHARPOS (it
);
5636 bytepos
= IT_BYTEPOS (it
);
5640 struct position pos
;
5642 iarg
= max (iarg
, this_scroll_margin
);
5644 pos
= *vmotion (PT
, -iarg
, w
);
5645 charpos
= pos
.bufpos
;
5646 bytepos
= pos
.bytepos
;
5651 struct position pos
;
5652 int ht
= window_internal_height (w
);
5659 /* Don't let it get into the margin at either top or bottom. */
5660 iarg
= max (iarg
, this_scroll_margin
);
5661 iarg
= min (iarg
, ht
- this_scroll_margin
- 1);
5663 pos
= *vmotion (PT
, - iarg
, w
);
5664 charpos
= pos
.bufpos
;
5665 bytepos
= pos
.bytepos
;
5668 /* Set the new window start. */
5669 set_marker_both (w
->start
, w
->buffer
, charpos
, bytepos
);
5670 w
->window_end_valid
= Qnil
;
5672 w
->optional_new_start
= Qt
;
5674 if (bytepos
== BEGV_BYTE
|| FETCH_BYTE (bytepos
- 1) == '\n')
5675 w
->start_at_line_beg
= Qt
;
5677 w
->start_at_line_beg
= Qnil
;
5679 set_buffer_internal (obuf
);
5684 DEFUN ("window-text-height", Fwindow_text_height
, Swindow_text_height
,
5686 doc
: /* Return the height in lines of the text display area of WINDOW.
5687 This doesn't include the mode-line (or header-line if any) or any
5688 partial-height lines in the text display area. */)
5692 struct window
*w
= decode_window (window
);
5693 int pixel_height
= window_box_height (w
);
5694 int line_height
= pixel_height
/ FRAME_LINE_HEIGHT (XFRAME (w
->frame
));
5695 return make_number (line_height
);
5700 DEFUN ("move-to-window-line", Fmove_to_window_line
, Smove_to_window_line
,
5702 doc
: /* Position point relative to window.
5703 With no argument, position point at center of window.
5704 An argument specifies vertical position within the window;
5705 zero means top of window, negative means relative to bottom of window. */)
5709 struct window
*w
= XWINDOW (selected_window
);
5713 int this_scroll_margin
;
5716 window
= selected_window
;
5717 start
= marker_position (w
->start
);
5718 if (start
< BEGV
|| start
> ZV
)
5720 int height
= window_internal_height (w
);
5721 Fvertical_motion (make_number (- (height
/ 2)), window
);
5722 set_marker_both (w
->start
, w
->buffer
, PT
, PT_BYTE
);
5723 w
->start_at_line_beg
= Fbolp ();
5724 w
->force_start
= Qt
;
5727 Fgoto_char (w
->start
);
5729 lines
= displayed_window_lines (w
);
5732 this_scroll_margin
= max (0, scroll_margin
);
5733 this_scroll_margin
= min (this_scroll_margin
, lines
/ 4);
5737 XSETFASTINT (arg
, lines
/ 2);
5740 int iarg
= XINT (Fprefix_numeric_value (arg
));
5743 iarg
= iarg
+ lines
;
5745 #if 0 /* This code would prevent move-to-window-line from moving point
5746 to a place inside the scroll margins (which would cause the
5747 next redisplay to scroll). I wrote this code, but then concluded
5748 it is probably better not to install it. However, it is here
5749 inside #if 0 so as not to lose it. -- rms. */
5751 /* Don't let it get into the margin at either top or bottom. */
5752 iarg
= max (iarg
, this_scroll_margin
);
5753 iarg
= min (iarg
, lines
- this_scroll_margin
- 1);
5756 arg
= make_number (iarg
);
5759 /* Skip past a partially visible first line. */
5761 XSETINT (arg
, XINT (arg
) + 1);
5763 return Fvertical_motion (arg
, window
);
5768 /***********************************************************************
5769 Window Configuration
5770 ***********************************************************************/
5772 struct save_window_data
5774 EMACS_INT size_from_Lisp_Vector_struct
;
5775 struct Lisp_Vector
*next_from_Lisp_Vector_struct
;
5776 Lisp_Object frame_cols
, frame_lines
, frame_menu_bar_lines
;
5777 Lisp_Object frame_tool_bar_lines
;
5778 Lisp_Object selected_frame
;
5779 Lisp_Object current_window
;
5780 Lisp_Object current_buffer
;
5781 Lisp_Object minibuf_scroll_window
;
5782 Lisp_Object minibuf_selected_window
;
5783 Lisp_Object root_window
;
5784 Lisp_Object focus_frame
;
5785 /* Record the values of window-min-width and window-min-height
5786 so that window sizes remain consistent with them. */
5787 Lisp_Object min_width
, min_height
;
5788 /* A vector, each of whose elements is a struct saved_window
5790 Lisp_Object saved_windows
;
5793 /* This is saved as a Lisp_Vector */
5796 /* these first two must agree with struct Lisp_Vector in lisp.h */
5797 EMACS_INT size_from_Lisp_Vector_struct
;
5798 struct Lisp_Vector
*next_from_Lisp_Vector_struct
;
5801 Lisp_Object buffer
, start
, pointm
, mark
;
5802 Lisp_Object left_col
, top_line
, total_cols
, total_lines
;
5803 Lisp_Object hscroll
, min_hscroll
;
5804 Lisp_Object parent
, prev
;
5805 Lisp_Object start_at_line_beg
;
5806 Lisp_Object display_table
;
5807 Lisp_Object orig_top_line
, orig_total_lines
;
5808 Lisp_Object left_margin_cols
, right_margin_cols
;
5809 Lisp_Object left_fringe_width
, right_fringe_width
, fringes_outside_margins
;
5810 Lisp_Object scroll_bar_width
, vertical_scroll_bar_type
;
5811 Lisp_Object dedicated
;
5814 #define SAVED_WINDOW_N(swv,n) \
5815 ((struct saved_window *) (XVECTOR ((swv)->contents[(n)])))
5817 DEFUN ("window-configuration-p", Fwindow_configuration_p
, Swindow_configuration_p
, 1, 1, 0,
5818 doc
: /* Return t if OBJECT is a window-configuration object. */)
5822 return WINDOW_CONFIGURATIONP (object
) ? Qt
: Qnil
;
5825 DEFUN ("window-configuration-frame", Fwindow_configuration_frame
, Swindow_configuration_frame
, 1, 1, 0,
5826 doc
: /* Return the frame that CONFIG, a window-configuration object, is about. */)
5830 register struct save_window_data
*data
;
5831 struct Lisp_Vector
*saved_windows
;
5833 if (! WINDOW_CONFIGURATIONP (config
))
5834 wrong_type_argument (Qwindow_configuration_p
, config
);
5836 data
= (struct save_window_data
*) XVECTOR (config
);
5837 saved_windows
= XVECTOR (data
->saved_windows
);
5838 return XWINDOW (SAVED_WINDOW_N (saved_windows
, 0)->window
)->frame
;
5841 DEFUN ("set-window-configuration", Fset_window_configuration
,
5842 Sset_window_configuration
, 1, 1, 0,
5843 doc
: /* Set the configuration of windows and buffers as specified by CONFIGURATION.
5844 CONFIGURATION must be a value previously returned
5845 by `current-window-configuration' (which see).
5846 If CONFIGURATION was made from a frame that is now deleted,
5847 only frame-independent values can be restored. In this case,
5848 the return value is nil. Otherwise the value is t. */)
5850 Lisp_Object configuration
;
5852 register struct save_window_data
*data
;
5853 struct Lisp_Vector
*saved_windows
;
5854 Lisp_Object new_current_buffer
;
5859 while (!WINDOW_CONFIGURATIONP (configuration
))
5860 wrong_type_argument (Qwindow_configuration_p
, configuration
);
5862 data
= (struct save_window_data
*) XVECTOR (configuration
);
5863 saved_windows
= XVECTOR (data
->saved_windows
);
5865 new_current_buffer
= data
->current_buffer
;
5866 if (NILP (XBUFFER (new_current_buffer
)->name
))
5867 new_current_buffer
= Qnil
;
5870 if (XBUFFER (new_current_buffer
) == current_buffer
)
5871 /* The code further down "preserves point" by saving here PT in
5872 old_point and then setting it later back into PT. When the
5873 current-selected-window and the final-selected-window both show
5874 the current buffer, this suffers from the problem that the
5875 current PT is the window-point of the current-selected-window,
5876 while the final PT is the point of the final-selected-window, so
5877 this copy from one PT to the other would end up moving the
5878 window-point of the final-selected-window to the window-point of
5879 the current-selected-window. So we have to be careful which
5880 point of the current-buffer we copy into old_point. */
5881 if (EQ (XWINDOW (data
->current_window
)->buffer
, new_current_buffer
)
5882 && WINDOWP (selected_window
)
5883 && EQ (XWINDOW (selected_window
)->buffer
, new_current_buffer
)
5884 && !EQ (selected_window
, data
->current_window
))
5885 old_point
= XMARKER (XWINDOW (data
->current_window
)->pointm
)->charpos
;
5889 /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of
5890 point in new_current_buffer as of the last time this buffer was
5891 used. This can be non-deterministic since it can be changed by
5892 things like jit-lock by mere temporary selection of some random
5893 window that happens to show this buffer.
5894 So if possible we want this arbitrary choice of "which point" to
5895 be the one from the to-be-selected-window so as to prevent this
5896 window's cursor from being copied from another window. */
5897 if (EQ (XWINDOW (data
->current_window
)->buffer
, new_current_buffer
)
5898 /* If current_window = selected_window, its point is in BUF_PT. */
5899 && !EQ (selected_window
, data
->current_window
))
5900 old_point
= XMARKER (XWINDOW (data
->current_window
)->pointm
)->charpos
;
5902 old_point
= BUF_PT (XBUFFER (new_current_buffer
));
5905 frame
= XWINDOW (SAVED_WINDOW_N (saved_windows
, 0)->window
)->frame
;
5908 /* If f is a dead frame, don't bother rebuilding its window tree.
5909 However, there is other stuff we should still try to do below. */
5910 if (FRAME_LIVE_P (f
))
5912 register struct window
*w
;
5913 register struct saved_window
*p
;
5914 struct window
*root_window
;
5915 struct window
**leaf_windows
;
5919 /* If the frame has been resized since this window configuration was
5920 made, we change the frame to the size specified in the
5921 configuration, restore the configuration, and then resize it
5922 back. We keep track of the prevailing height in these variables. */
5923 int previous_frame_lines
= FRAME_LINES (f
);
5924 int previous_frame_cols
= FRAME_COLS (f
);
5925 int previous_frame_menu_bar_lines
= FRAME_MENU_BAR_LINES (f
);
5926 int previous_frame_tool_bar_lines
= FRAME_TOOL_BAR_LINES (f
);
5928 /* The mouse highlighting code could get screwed up
5929 if it runs during this. */
5932 if (XFASTINT (data
->frame_lines
) != previous_frame_lines
5933 || XFASTINT (data
->frame_cols
) != previous_frame_cols
)
5934 change_frame_size (f
, XFASTINT (data
->frame_lines
),
5935 XFASTINT (data
->frame_cols
), 0, 0, 0);
5936 #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS)
5937 if (XFASTINT (data
->frame_menu_bar_lines
)
5938 != previous_frame_menu_bar_lines
)
5939 x_set_menu_bar_lines (f
, data
->frame_menu_bar_lines
, make_number (0));
5940 #ifdef HAVE_WINDOW_SYSTEM
5941 if (XFASTINT (data
->frame_tool_bar_lines
)
5942 != previous_frame_tool_bar_lines
)
5943 x_set_tool_bar_lines (f
, data
->frame_tool_bar_lines
, make_number (0));
5947 /* "Swap out" point from the selected window's buffer
5948 into the window itself. (Normally the pointm of the selected
5949 window holds garbage.) We do this now, before
5950 restoring the window contents, and prevent it from
5951 being done later on when we select a new window. */
5952 if (! NILP (XWINDOW (selected_window
)->buffer
))
5954 w
= XWINDOW (selected_window
);
5955 set_marker_both (w
->pointm
,
5957 BUF_PT (XBUFFER (w
->buffer
)),
5958 BUF_PT_BYTE (XBUFFER (w
->buffer
)));
5961 windows_or_buffers_changed
++;
5962 FRAME_WINDOW_SIZES_CHANGED (f
) = 1;
5964 /* Problem: Freeing all matrices and later allocating them again
5965 is a serious redisplay flickering problem. What we would
5966 really like to do is to free only those matrices not reused
5968 root_window
= XWINDOW (FRAME_ROOT_WINDOW (f
));
5970 = (struct window
**) alloca (count_windows (root_window
)
5971 * sizeof (struct window
*));
5972 n_leaf_windows
= get_leaf_windows (root_window
, leaf_windows
, 0);
5974 /* Temporarily avoid any problems with windows that are smaller
5975 than they are supposed to be. */
5976 window_min_height
= 1;
5977 window_min_width
= 1;
5980 Mark all windows now on frame as "deleted".
5981 Restoring the new configuration "undeletes" any that are in it.
5983 Save their current buffers in their height fields, since we may
5984 need it later, if a buffer saved in the configuration is now
5986 delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f
)));
5988 for (k
= 0; k
< saved_windows
->size
; k
++)
5990 p
= SAVED_WINDOW_N (saved_windows
, k
);
5991 w
= XWINDOW (p
->window
);
5994 if (!NILP (p
->parent
))
5995 w
->parent
= SAVED_WINDOW_N (saved_windows
,
5996 XFASTINT (p
->parent
))->window
;
6000 if (!NILP (p
->prev
))
6002 w
->prev
= SAVED_WINDOW_N (saved_windows
,
6003 XFASTINT (p
->prev
))->window
;
6004 XWINDOW (w
->prev
)->next
= p
->window
;
6009 if (!NILP (w
->parent
))
6011 if (EQ (p
->total_cols
, XWINDOW (w
->parent
)->total_cols
))
6013 XWINDOW (w
->parent
)->vchild
= p
->window
;
6014 XWINDOW (w
->parent
)->hchild
= Qnil
;
6018 XWINDOW (w
->parent
)->hchild
= p
->window
;
6019 XWINDOW (w
->parent
)->vchild
= Qnil
;
6024 /* If we squirreled away the buffer in the window's height,
6026 if (BUFFERP (w
->total_lines
))
6027 w
->buffer
= w
->total_lines
;
6028 w
->left_col
= p
->left_col
;
6029 w
->top_line
= p
->top_line
;
6030 w
->total_cols
= p
->total_cols
;
6031 w
->total_lines
= p
->total_lines
;
6032 w
->hscroll
= p
->hscroll
;
6033 w
->min_hscroll
= p
->min_hscroll
;
6034 w
->display_table
= p
->display_table
;
6035 w
->orig_top_line
= p
->orig_top_line
;
6036 w
->orig_total_lines
= p
->orig_total_lines
;
6037 w
->left_margin_cols
= p
->left_margin_cols
;
6038 w
->right_margin_cols
= p
->right_margin_cols
;
6039 w
->left_fringe_width
= p
->left_fringe_width
;
6040 w
->right_fringe_width
= p
->right_fringe_width
;
6041 w
->fringes_outside_margins
= p
->fringes_outside_margins
;
6042 w
->scroll_bar_width
= p
->scroll_bar_width
;
6043 w
->vertical_scroll_bar_type
= p
->vertical_scroll_bar_type
;
6044 w
->dedicated
= p
->dedicated
;
6045 XSETFASTINT (w
->last_modified
, 0);
6046 XSETFASTINT (w
->last_overlay_modified
, 0);
6048 /* Reinstall the saved buffer and pointers into it. */
6049 if (NILP (p
->buffer
))
6050 w
->buffer
= p
->buffer
;
6053 if (!NILP (XBUFFER (p
->buffer
)->name
))
6054 /* If saved buffer is alive, install it. */
6056 w
->buffer
= p
->buffer
;
6057 w
->start_at_line_beg
= p
->start_at_line_beg
;
6058 set_marker_restricted (w
->start
, p
->start
, w
->buffer
);
6059 set_marker_restricted (w
->pointm
, p
->pointm
, w
->buffer
);
6060 Fset_marker (XBUFFER (w
->buffer
)->mark
,
6061 p
->mark
, w
->buffer
);
6063 /* As documented in Fcurrent_window_configuration, don't
6064 restore the location of point in the buffer which was
6065 current when the window configuration was recorded. */
6066 if (!EQ (p
->buffer
, new_current_buffer
)
6067 && XBUFFER (p
->buffer
) == current_buffer
)
6068 Fgoto_char (w
->pointm
);
6070 else if (NILP (w
->buffer
) || NILP (XBUFFER (w
->buffer
)->name
))
6071 /* Else unless window has a live buffer, get one. */
6073 w
->buffer
= Fcdr (Fcar (Vbuffer_alist
));
6074 /* This will set the markers to beginning of visible
6076 set_marker_restricted (w
->start
, make_number (0), w
->buffer
);
6077 set_marker_restricted (w
->pointm
, make_number (0),w
->buffer
);
6078 w
->start_at_line_beg
= Qt
;
6081 /* Keeping window's old buffer; make sure the markers
6084 /* Set window markers at start of visible range. */
6085 if (XMARKER (w
->start
)->buffer
== 0)
6086 set_marker_restricted (w
->start
, make_number (0),
6088 if (XMARKER (w
->pointm
)->buffer
== 0)
6089 set_marker_restricted_both (w
->pointm
, w
->buffer
,
6090 BUF_PT (XBUFFER (w
->buffer
)),
6091 BUF_PT_BYTE (XBUFFER (w
->buffer
)));
6092 w
->start_at_line_beg
= Qt
;
6097 FRAME_ROOT_WINDOW (f
) = data
->root_window
;
6098 /* Prevent "swapping out point" in the old selected window
6099 using the buffer that has been restored into it.
6100 We already swapped out point that from that window's old buffer. */
6101 selected_window
= Qnil
;
6103 /* Arrange *not* to restore point in the buffer that was
6104 current when the window configuration was saved. */
6105 if (EQ (XWINDOW (data
->current_window
)->buffer
, new_current_buffer
))
6106 set_marker_restricted (XWINDOW (data
->current_window
)->pointm
,
6107 make_number (old_point
),
6108 XWINDOW (data
->current_window
)->buffer
);
6110 Fselect_window (data
->current_window
, Qnil
);
6111 XBUFFER (XWINDOW (selected_window
)->buffer
)->last_selected_window
6114 if (NILP (data
->focus_frame
)
6115 || (FRAMEP (data
->focus_frame
)
6116 && FRAME_LIVE_P (XFRAME (data
->focus_frame
))))
6117 Fredirect_frame_focus (frame
, data
->focus_frame
);
6119 #if 0 /* I don't understand why this is needed, and it causes problems
6120 when the frame's old selected window has been deleted. */
6121 if (f
!= selected_frame
&& FRAME_WINDOW_P (f
))
6122 do_switch_frame (WINDOW_FRAME (XWINDOW (data
->root_window
)),
6126 /* Set the screen height to the value it had before this function. */
6127 if (previous_frame_lines
!= FRAME_LINES (f
)
6128 || previous_frame_cols
!= FRAME_COLS (f
))
6129 change_frame_size (f
, previous_frame_lines
, previous_frame_cols
,
6131 #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS)
6132 if (previous_frame_menu_bar_lines
!= FRAME_MENU_BAR_LINES (f
))
6133 x_set_menu_bar_lines (f
, make_number (previous_frame_menu_bar_lines
),
6135 #ifdef HAVE_WINDOW_SYSTEM
6136 if (previous_frame_tool_bar_lines
!= FRAME_TOOL_BAR_LINES (f
))
6137 x_set_tool_bar_lines (f
, make_number (previous_frame_tool_bar_lines
),
6142 /* Now, free glyph matrices in windows that were not reused. */
6143 for (i
= n
= 0; i
< n_leaf_windows
; ++i
)
6145 if (NILP (leaf_windows
[i
]->buffer
))
6147 /* Assert it's not reused as a combination. */
6148 xassert (NILP (leaf_windows
[i
]->hchild
)
6149 && NILP (leaf_windows
[i
]->vchild
));
6150 free_window_matrices (leaf_windows
[i
]);
6152 else if (EQ (leaf_windows
[i
]->buffer
, new_current_buffer
))
6160 /* Fselect_window will have made f the selected frame, so we
6161 reselect the proper frame here. Fhandle_switch_frame will change the
6162 selected window too, but that doesn't make the call to
6163 Fselect_window above totally superfluous; it still sets f's
6165 if (FRAME_LIVE_P (XFRAME (data
->selected_frame
)))
6166 do_switch_frame (data
->selected_frame
, 0, 0);
6168 if (! NILP (Vwindow_configuration_change_hook
)
6169 && ! NILP (Vrun_hooks
))
6170 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
6173 if (!NILP (new_current_buffer
))
6174 Fset_buffer (new_current_buffer
);
6176 /* Restore the minimum heights recorded in the configuration. */
6177 window_min_height
= XINT (data
->min_height
);
6178 window_min_width
= XINT (data
->min_width
);
6180 Vminibuf_scroll_window
= data
->minibuf_scroll_window
;
6181 minibuf_selected_window
= data
->minibuf_selected_window
;
6183 return (FRAME_LIVE_P (f
) ? Qt
: Qnil
);
6186 /* Mark all windows now on frame as deleted
6187 by setting their buffers to nil. */
6190 delete_all_subwindows (w
)
6191 register struct window
*w
;
6193 if (!NILP (w
->next
))
6194 delete_all_subwindows (XWINDOW (w
->next
));
6195 if (!NILP (w
->vchild
))
6196 delete_all_subwindows (XWINDOW (w
->vchild
));
6197 if (!NILP (w
->hchild
))
6198 delete_all_subwindows (XWINDOW (w
->hchild
));
6200 w
->total_lines
= w
->buffer
; /* See Fset_window_configuration for excuse. */
6202 if (!NILP (w
->buffer
))
6205 /* We set all three of these fields to nil, to make sure that we can
6206 distinguish this dead window from any live window. Live leaf
6207 windows will have buffer set, and combination windows will have
6208 vchild or hchild set. */
6213 Vwindow_list
= Qnil
;
6217 count_windows (window
)
6218 register struct window
*window
;
6220 register int count
= 1;
6221 if (!NILP (window
->next
))
6222 count
+= count_windows (XWINDOW (window
->next
));
6223 if (!NILP (window
->vchild
))
6224 count
+= count_windows (XWINDOW (window
->vchild
));
6225 if (!NILP (window
->hchild
))
6226 count
+= count_windows (XWINDOW (window
->hchild
));
6231 /* Fill vector FLAT with leaf windows under W, starting at index I.
6232 Value is last index + 1. */
6235 get_leaf_windows (w
, flat
, i
)
6237 struct window
**flat
;
6242 if (!NILP (w
->hchild
))
6243 i
= get_leaf_windows (XWINDOW (w
->hchild
), flat
, i
);
6244 else if (!NILP (w
->vchild
))
6245 i
= get_leaf_windows (XWINDOW (w
->vchild
), flat
, i
);
6249 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
6256 /* Return a pointer to the glyph W's physical cursor is on. Value is
6257 null if W's current matrix is invalid, so that no meaningfull glyph
6261 get_phys_cursor_glyph (w
)
6264 struct glyph_row
*row
;
6265 struct glyph
*glyph
;
6267 if (w
->phys_cursor
.vpos
>= 0
6268 && w
->phys_cursor
.vpos
< w
->current_matrix
->nrows
6269 && (row
= MATRIX_ROW (w
->current_matrix
, w
->phys_cursor
.vpos
),
6271 && row
->used
[TEXT_AREA
] > w
->phys_cursor
.hpos
)
6272 glyph
= row
->glyphs
[TEXT_AREA
] + w
->phys_cursor
.hpos
;
6281 save_window_save (window
, vector
, i
)
6283 struct Lisp_Vector
*vector
;
6286 register struct saved_window
*p
;
6287 register struct window
*w
;
6288 register Lisp_Object tem
;
6290 for (;!NILP (window
); window
= w
->next
)
6292 p
= SAVED_WINDOW_N (vector
, i
);
6293 w
= XWINDOW (window
);
6295 XSETFASTINT (w
->temslot
, i
); i
++;
6297 p
->buffer
= w
->buffer
;
6298 p
->left_col
= w
->left_col
;
6299 p
->top_line
= w
->top_line
;
6300 p
->total_cols
= w
->total_cols
;
6301 p
->total_lines
= w
->total_lines
;
6302 p
->hscroll
= w
->hscroll
;
6303 p
->min_hscroll
= w
->min_hscroll
;
6304 p
->display_table
= w
->display_table
;
6305 p
->orig_top_line
= w
->orig_top_line
;
6306 p
->orig_total_lines
= w
->orig_total_lines
;
6307 p
->left_margin_cols
= w
->left_margin_cols
;
6308 p
->right_margin_cols
= w
->right_margin_cols
;
6309 p
->left_fringe_width
= w
->left_fringe_width
;
6310 p
->right_fringe_width
= w
->right_fringe_width
;
6311 p
->fringes_outside_margins
= w
->fringes_outside_margins
;
6312 p
->scroll_bar_width
= w
->scroll_bar_width
;
6313 p
->vertical_scroll_bar_type
= w
->vertical_scroll_bar_type
;
6314 p
->dedicated
= w
->dedicated
;
6315 if (!NILP (w
->buffer
))
6317 /* Save w's value of point in the window configuration.
6318 If w is the selected window, then get the value of point
6319 from the buffer; pointm is garbage in the selected window. */
6320 if (EQ (window
, selected_window
))
6322 p
->pointm
= Fmake_marker ();
6323 set_marker_both (p
->pointm
, w
->buffer
,
6324 BUF_PT (XBUFFER (w
->buffer
)),
6325 BUF_PT_BYTE (XBUFFER (w
->buffer
)));
6328 p
->pointm
= Fcopy_marker (w
->pointm
, Qnil
);
6330 p
->start
= Fcopy_marker (w
->start
, Qnil
);
6331 p
->start_at_line_beg
= w
->start_at_line_beg
;
6333 tem
= XBUFFER (w
->buffer
)->mark
;
6334 p
->mark
= Fcopy_marker (tem
, Qnil
);
6341 p
->start_at_line_beg
= Qnil
;
6344 if (NILP (w
->parent
))
6347 p
->parent
= XWINDOW (w
->parent
)->temslot
;
6352 p
->prev
= XWINDOW (w
->prev
)->temslot
;
6354 if (!NILP (w
->vchild
))
6355 i
= save_window_save (w
->vchild
, vector
, i
);
6356 if (!NILP (w
->hchild
))
6357 i
= save_window_save (w
->hchild
, vector
, i
);
6363 DEFUN ("current-window-configuration", Fcurrent_window_configuration
,
6364 Scurrent_window_configuration
, 0, 1, 0,
6365 doc
: /* Return an object representing the current window configuration of FRAME.
6366 If FRAME is nil or omitted, use the selected frame.
6367 This describes the number of windows, their sizes and current buffers,
6368 and for each displayed buffer, where display starts, and the positions of
6369 point and mark. An exception is made for point in the current buffer:
6370 its value is -not- saved.
6371 This also records the currently selected frame, and FRAME's focus
6372 redirection (see `redirect-frame-focus'). */)
6376 register Lisp_Object tem
;
6377 register int n_windows
;
6378 register struct save_window_data
*data
;
6379 register struct Lisp_Vector
*vec
;
6384 frame
= selected_frame
;
6385 CHECK_LIVE_FRAME (frame
);
6388 n_windows
= count_windows (XWINDOW (FRAME_ROOT_WINDOW (f
)));
6389 vec
= allocate_other_vector (VECSIZE (struct save_window_data
));
6390 data
= (struct save_window_data
*)vec
;
6392 XSETFASTINT (data
->frame_cols
, FRAME_COLS (f
));
6393 XSETFASTINT (data
->frame_lines
, FRAME_LINES (f
));
6394 XSETFASTINT (data
->frame_menu_bar_lines
, FRAME_MENU_BAR_LINES (f
));
6395 XSETFASTINT (data
->frame_tool_bar_lines
, FRAME_TOOL_BAR_LINES (f
));
6396 data
->selected_frame
= selected_frame
;
6397 data
->current_window
= FRAME_SELECTED_WINDOW (f
);
6398 XSETBUFFER (data
->current_buffer
, current_buffer
);
6399 data
->minibuf_scroll_window
= minibuf_level
> 0 ? Vminibuf_scroll_window
: Qnil
;
6400 data
->minibuf_selected_window
= minibuf_level
> 0 ? minibuf_selected_window
: Qnil
;
6401 data
->root_window
= FRAME_ROOT_WINDOW (f
);
6402 data
->focus_frame
= FRAME_FOCUS_FRAME (f
);
6403 XSETINT (data
->min_height
, window_min_height
);
6404 XSETINT (data
->min_width
, window_min_width
);
6405 tem
= Fmake_vector (make_number (n_windows
), Qnil
);
6406 data
->saved_windows
= tem
;
6407 for (i
= 0; i
< n_windows
; i
++)
6408 XVECTOR (tem
)->contents
[i
]
6409 = Fmake_vector (make_number (VECSIZE (struct saved_window
)), Qnil
);
6410 save_window_save (FRAME_ROOT_WINDOW (f
), XVECTOR (tem
), 0);
6411 XSETWINDOW_CONFIGURATION (tem
, data
);
6415 DEFUN ("save-window-excursion", Fsave_window_excursion
, Ssave_window_excursion
,
6417 doc
: /* Execute BODY, preserving window sizes and contents.
6418 Return the value of the last form in BODY.
6419 Restore which buffer appears in which window, where display starts,
6420 and the value of point and mark for each window.
6421 Also restore the choice of selected window.
6422 Also restore which buffer is current.
6423 Does not restore the value of point in current buffer.
6424 usage: (save-window-excursion BODY ...) */)
6428 register Lisp_Object val
;
6429 register int count
= SPECPDL_INDEX ();
6431 record_unwind_protect (Fset_window_configuration
,
6432 Fcurrent_window_configuration (Qnil
));
6433 val
= Fprogn (args
);
6434 return unbind_to (count
, val
);
6439 /***********************************************************************
6441 ***********************************************************************/
6447 Lisp_Object tail
= Qnil
;
6448 Lisp_Object result
= Qnil
;
6455 if (!NILP (w
->hchild
))
6456 wn
= Fcons (Qnil
, Fcons (Fwindow_edges (wn
),
6457 window_tree (XWINDOW (w
->hchild
))));
6458 else if (!NILP (w
->vchild
))
6459 wn
= Fcons (Qt
, Fcons (Fwindow_edges (wn
),
6460 window_tree (XWINDOW (w
->vchild
))));
6464 result
= tail
= Fcons (wn
, Qnil
);
6468 XSETCDR (tail
, Fcons (wn
, Qnil
));
6472 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
6480 DEFUN ("window-tree", Fwindow_tree
, Swindow_tree
,
6482 doc
: /* Return the window tree for frame FRAME.
6484 The return value is a list of the form (ROOT MINI), where ROOT
6485 represents the window tree of the frame's root window, and MINI
6486 is the frame's minibuffer window.
6488 If the root window is not split, ROOT is the root window itself.
6489 Otherwise, ROOT is a list (DIR EDGES W1 W2 ...) where DIR is nil for a
6490 horizontal split, and t for a vertical split, EDGES gives the combined
6491 size and position of the subwindows in the split, and the rest of the
6492 elements are the subwindows in the split. Each of the subwindows may
6493 again be a window or a list representing a window split, and so on.
6494 EDGES is a list \(LEFT TOP RIGHT BOTTOM) as returned by `window-edges'.
6496 If FRAME is nil or omitted, return information on the currently
6504 frame
= selected_frame
;
6506 CHECK_FRAME (frame
);
6509 if (!FRAME_LIVE_P (f
))
6512 return window_tree (XWINDOW (FRAME_ROOT_WINDOW (f
)));
6516 /***********************************************************************
6518 ***********************************************************************/
6520 DEFUN ("set-window-margins", Fset_window_margins
, Sset_window_margins
,
6522 doc
: /* Set width of marginal areas of window WINDOW.
6523 If WINDOW is nil, set margins of the currently selected window.
6524 Second arg LEFT-WIDTH specifies the number of character cells to
6525 reserve for the left marginal area. Optional third arg RIGHT-WIDTH
6526 does the same for the right marginal area. A nil width parameter
6527 means no margin. */)
6528 (window
, left_width
, right_width
)
6529 Lisp_Object window
, left_width
, right_width
;
6531 struct window
*w
= decode_window (window
);
6533 /* Translate negative or zero widths to nil.
6534 Margins that are too wide have to be checked elsewhere. */
6536 if (!NILP (left_width
))
6538 CHECK_NUMBER (left_width
);
6539 if (XINT (left_width
) <= 0)
6543 if (!NILP (right_width
))
6545 CHECK_NUMBER (right_width
);
6546 if (XINT (right_width
) <= 0)
6550 if (!EQ (w
->left_margin_cols
, left_width
)
6551 || !EQ (w
->right_margin_cols
, right_width
))
6553 w
->left_margin_cols
= left_width
;
6554 w
->right_margin_cols
= right_width
;
6556 adjust_window_margins (w
);
6558 ++windows_or_buffers_changed
;
6559 adjust_glyphs (XFRAME (WINDOW_FRAME (w
)));
6566 DEFUN ("window-margins", Fwindow_margins
, Swindow_margins
,
6568 doc
: /* Get width of marginal areas of window WINDOW.
6569 If WINDOW is omitted or nil, use the currently selected window.
6570 Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH).
6571 If a marginal area does not exist, its width will be returned
6576 struct window
*w
= decode_window (window
);
6577 return Fcons (w
->left_margin_cols
, w
->right_margin_cols
);
6582 /***********************************************************************
6584 ***********************************************************************/
6586 DEFUN ("set-window-fringes", Fset_window_fringes
, Sset_window_fringes
,
6588 doc
: /* Set the fringe widths of window WINDOW.
6589 If WINDOW is nil, set the fringe widths of the currently selected
6591 Second arg LEFT-WIDTH specifies the number of pixels to reserve for
6592 the left fringe. Optional third arg RIGHT-WIDTH specifies the right
6593 fringe width. If a fringe width arg is nil, that means to use the
6594 frame's default fringe width. Default fringe widths can be set with
6595 the command `set-fringe-style'.
6596 If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes
6597 outside of the display margins. By default, fringes are drawn between
6598 display marginal areas and the text area. */)
6599 (window
, left_width
, right_width
, outside_margins
)
6600 Lisp_Object window
, left_width
, right_width
, outside_margins
;
6602 struct window
*w
= decode_window (window
);
6604 if (!NILP (left_width
))
6605 CHECK_NATNUM (left_width
);
6606 if (!NILP (right_width
))
6607 CHECK_NATNUM (right_width
);
6609 if (!EQ (w
->left_fringe_width
, left_width
)
6610 || !EQ (w
->right_fringe_width
, right_width
)
6611 || !EQ (w
->fringes_outside_margins
, outside_margins
))
6613 w
->left_fringe_width
= left_width
;
6614 w
->right_fringe_width
= right_width
;
6615 w
->fringes_outside_margins
= outside_margins
;
6617 adjust_window_margins (w
);
6619 clear_glyph_matrix (w
->current_matrix
);
6620 w
->window_end_valid
= Qnil
;
6622 ++windows_or_buffers_changed
;
6623 adjust_glyphs (XFRAME (WINDOW_FRAME (w
)));
6630 DEFUN ("window-fringes", Fwindow_fringes
, Swindow_fringes
,
6632 doc
: /* Get width of fringes of window WINDOW.
6633 If WINDOW is omitted or nil, use the currently selected window.
6634 Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */)
6638 struct window
*w
= decode_window (window
);
6639 return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w
)),
6640 Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w
)),
6641 Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
) ?
6642 Qt
: Qnil
), Qnil
)));
6647 /***********************************************************************
6649 ***********************************************************************/
6651 DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars
, Sset_window_scroll_bars
,
6653 doc
: /* Set width and type of scroll bars of window WINDOW.
6654 If window is nil, set scroll bars of the currently selected window.
6655 Second parameter WIDTH specifies the pixel width for the scroll bar;
6656 this is automatically adjusted to a multiple of the frame column width.
6657 Third parameter VERTICAL-TYPE specifies the type of the vertical scroll
6658 bar: left, right, or nil.
6659 If WIDTH is nil, use the frame's scroll-bar width.
6660 If VERTICAL-TYPE is t, use the frame's scroll-bar type.
6661 Fourth parameter HORIZONTAL-TYPE is currently unused. */)
6662 (window
, width
, vertical_type
, horizontal_type
)
6663 Lisp_Object window
, width
, vertical_type
, horizontal_type
;
6665 struct window
*w
= decode_window (window
);
6669 CHECK_NATNUM (width
);
6671 if (XINT (width
) == 0)
6672 vertical_type
= Qnil
;
6675 if (!(EQ (vertical_type
, Qnil
)
6676 || EQ (vertical_type
, Qleft
)
6677 || EQ (vertical_type
, Qright
)
6678 || EQ (vertical_type
, Qt
)))
6679 error ("Invalid type of vertical scroll bar");
6681 if (!EQ (w
->scroll_bar_width
, width
)
6682 || !EQ (w
->vertical_scroll_bar_type
, vertical_type
))
6684 w
->scroll_bar_width
= width
;
6685 w
->vertical_scroll_bar_type
= vertical_type
;
6687 adjust_window_margins (w
);
6689 clear_glyph_matrix (w
->current_matrix
);
6690 w
->window_end_valid
= Qnil
;
6692 ++windows_or_buffers_changed
;
6693 adjust_glyphs (XFRAME (WINDOW_FRAME (w
)));
6700 DEFUN ("window-scroll-bars", Fwindow_scroll_bars
, Swindow_scroll_bars
,
6702 doc
: /* Get width and type of scroll bars of window WINDOW.
6703 If WINDOW is omitted or nil, use the currently selected window.
6704 Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE).
6705 If WIDTH is nil or TYPE is t, the window is using the frame's corresponding
6710 struct window
*w
= decode_window (window
);
6711 return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w
)
6712 ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w
)
6713 : WINDOW_SCROLL_BAR_AREA_WIDTH (w
))),
6714 Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w
)),
6715 Fcons (w
->vertical_scroll_bar_type
,
6716 Fcons (Qnil
, Qnil
))));
6721 /***********************************************************************
6723 ***********************************************************************/
6725 DEFUN ("window-vscroll", Fwindow_vscroll
, Swindow_vscroll
, 0, 2, 0,
6726 doc
: /* Return the amount by which WINDOW is scrolled vertically.
6727 Use the selected window if WINDOW is nil or omitted.
6728 Normally, value is a multiple of the canonical character height of WINDOW;
6729 optional second arg PIXELS-P means value is measured in pixels. */)
6731 Lisp_Object window
, pixels_p
;
6738 window
= selected_window
;
6740 CHECK_WINDOW (window
);
6741 w
= XWINDOW (window
);
6742 f
= XFRAME (w
->frame
);
6744 if (FRAME_WINDOW_P (f
))
6745 result
= (NILP (pixels_p
)
6746 ? FRAME_CANON_Y_FROM_PIXEL_Y (f
, -w
->vscroll
)
6747 : make_number (-w
->vscroll
));
6749 result
= make_number (0);
6754 DEFUN ("set-window-vscroll", Fset_window_vscroll
, Sset_window_vscroll
,
6756 doc
: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL.
6757 WINDOW nil means use the selected window. Normally, VSCROLL is a
6758 non-negative multiple of the canonical character height of WINDOW;
6759 optional third arg PIXELS-P non-nil means that VSCROLL is in pixels.
6760 If PIXELS-P is nil, VSCROLL may have to be rounded so that it
6761 corresponds to an integral number of pixels. The return value is the
6762 result of this rounding.
6763 If PIXELS-P is non-nil, the return value is VSCROLL. */)
6764 (window
, vscroll
, pixels_p
)
6765 Lisp_Object window
, vscroll
, pixels_p
;
6771 window
= selected_window
;
6773 CHECK_WINDOW (window
);
6774 CHECK_NUMBER_OR_FLOAT (vscroll
);
6776 w
= XWINDOW (window
);
6777 f
= XFRAME (w
->frame
);
6779 if (FRAME_WINDOW_P (f
))
6781 int old_dy
= w
->vscroll
;
6783 w
->vscroll
= - (NILP (pixels_p
)
6784 ? FRAME_LINE_HEIGHT (f
) * XFLOATINT (vscroll
)
6785 : XFLOATINT (vscroll
));
6786 w
->vscroll
= min (w
->vscroll
, 0);
6788 if (w
->vscroll
!= old_dy
)
6790 /* Adjust glyph matrix of the frame if the virtual display
6791 area becomes larger than before. */
6792 if (w
->vscroll
< 0 && w
->vscroll
< old_dy
)
6795 /* Prevent redisplay shortcuts. */
6796 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
6800 return Fwindow_vscroll (window
, pixels_p
);
6804 /* Call FN for all leaf windows on frame F. FN is called with the
6805 first argument being a pointer to the leaf window, and with
6806 additional argument USER_DATA. Stops when FN returns 0. */
6809 foreach_window (f
, fn
, user_data
)
6811 int (* fn
) P_ ((struct window
*, void *));
6814 /* Fdelete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */
6815 if (WINDOWP (FRAME_ROOT_WINDOW (f
)))
6816 foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f
)), fn
, user_data
);
6820 /* Helper function for foreach_window. Call FN for all leaf windows
6821 reachable from W. FN is called with the first argument being a
6822 pointer to the leaf window, and with additional argument USER_DATA.
6823 Stop when FN returns 0. Value is 0 if stopped by FN. */
6826 foreach_window_1 (w
, fn
, user_data
)
6828 int (* fn
) P_ ((struct window
*, void *));
6833 for (cont
= 1; w
&& cont
;)
6835 if (!NILP (w
->hchild
))
6836 cont
= foreach_window_1 (XWINDOW (w
->hchild
), fn
, user_data
);
6837 else if (!NILP (w
->vchild
))
6838 cont
= foreach_window_1 (XWINDOW (w
->vchild
), fn
, user_data
);
6840 cont
= fn (w
, user_data
);
6842 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
6849 /* Freeze or unfreeze the window start of W unless it is a
6850 mini-window or the selected window. FREEZE_P non-null means freeze
6851 the window start. */
6854 freeze_window_start (w
, freeze_p
)
6858 if (w
== XWINDOW (selected_window
)
6859 || MINI_WINDOW_P (w
)
6860 || (MINI_WINDOW_P (XWINDOW (selected_window
))
6861 && ! NILP (Vminibuf_scroll_window
)
6862 && w
== XWINDOW (Vminibuf_scroll_window
)))
6865 w
->frozen_window_start_p
= freeze_p
!= NULL
;
6870 /* Freeze or unfreeze the window starts of all leaf windows on frame
6871 F, except the selected window and a mini-window. FREEZE_P non-zero
6872 means freeze the window start. */
6875 freeze_window_starts (f
, freeze_p
)
6879 foreach_window (f
, freeze_window_start
, (void *) (freeze_p
? f
: 0));
6883 /***********************************************************************
6885 ***********************************************************************/
6887 /* Return 1 if window configurations C1 and C2
6888 describe the same state of affairs. This is used by Fequal. */
6891 compare_window_configurations (c1
, c2
, ignore_positions
)
6893 int ignore_positions
;
6895 register struct save_window_data
*d1
, *d2
;
6896 struct Lisp_Vector
*sw1
, *sw2
;
6899 if (!WINDOW_CONFIGURATIONP (c1
))
6900 wrong_type_argument (Qwindow_configuration_p
, c1
);
6901 if (!WINDOW_CONFIGURATIONP (c2
))
6902 wrong_type_argument (Qwindow_configuration_p
, c2
);
6904 d1
= (struct save_window_data
*) XVECTOR (c1
);
6905 d2
= (struct save_window_data
*) XVECTOR (c2
);
6906 sw1
= XVECTOR (d1
->saved_windows
);
6907 sw2
= XVECTOR (d2
->saved_windows
);
6909 if (! EQ (d1
->frame_cols
, d2
->frame_cols
))
6911 if (! EQ (d1
->frame_lines
, d2
->frame_lines
))
6913 if (! EQ (d1
->frame_menu_bar_lines
, d2
->frame_menu_bar_lines
))
6915 if (! EQ (d1
->selected_frame
, d2
->selected_frame
))
6917 /* Don't compare the current_window field directly.
6918 Instead see w1_is_current and w2_is_current, below. */
6919 if (! EQ (d1
->current_buffer
, d2
->current_buffer
))
6921 if (! ignore_positions
)
6923 if (! EQ (d1
->minibuf_scroll_window
, d2
->minibuf_scroll_window
))
6925 if (! EQ (d1
->minibuf_selected_window
, d2
->minibuf_selected_window
))
6928 /* Don't compare the root_window field.
6929 We don't require the two configurations
6930 to use the same window object,
6931 and the two root windows must be equivalent
6932 if everything else compares equal. */
6933 if (! EQ (d1
->focus_frame
, d2
->focus_frame
))
6935 if (! EQ (d1
->min_width
, d2
->min_width
))
6937 if (! EQ (d1
->min_height
, d2
->min_height
))
6940 /* Verify that the two confis have the same number of windows. */
6941 if (sw1
->size
!= sw2
->size
)
6944 for (i
= 0; i
< sw1
->size
; i
++)
6946 struct saved_window
*p1
, *p2
;
6947 int w1_is_current
, w2_is_current
;
6949 p1
= SAVED_WINDOW_N (sw1
, i
);
6950 p2
= SAVED_WINDOW_N (sw2
, i
);
6952 /* Verify that the current windows in the two
6953 configurations correspond to each other. */
6954 w1_is_current
= EQ (d1
->current_window
, p1
->window
);
6955 w2_is_current
= EQ (d2
->current_window
, p2
->window
);
6957 if (w1_is_current
!= w2_is_current
)
6960 /* Verify that the corresponding windows do match. */
6961 if (! EQ (p1
->buffer
, p2
->buffer
))
6963 if (! EQ (p1
->left_col
, p2
->left_col
))
6965 if (! EQ (p1
->top_line
, p2
->top_line
))
6967 if (! EQ (p1
->total_cols
, p2
->total_cols
))
6969 if (! EQ (p1
->total_lines
, p2
->total_lines
))
6971 if (! EQ (p1
->display_table
, p2
->display_table
))
6973 if (! EQ (p1
->parent
, p2
->parent
))
6975 if (! EQ (p1
->prev
, p2
->prev
))
6977 if (! ignore_positions
)
6979 if (! EQ (p1
->hscroll
, p2
->hscroll
))
6981 if (!EQ (p1
->min_hscroll
, p2
->min_hscroll
))
6983 if (! EQ (p1
->start_at_line_beg
, p2
->start_at_line_beg
))
6985 if (NILP (Fequal (p1
->start
, p2
->start
)))
6987 if (NILP (Fequal (p1
->pointm
, p2
->pointm
)))
6989 if (NILP (Fequal (p1
->mark
, p2
->mark
)))
6992 if (! EQ (p1
->left_margin_cols
, p2
->left_margin_cols
))
6994 if (! EQ (p1
->right_margin_cols
, p2
->right_margin_cols
))
6996 if (! EQ (p1
->left_fringe_width
, p2
->left_fringe_width
))
6998 if (! EQ (p1
->right_fringe_width
, p2
->right_fringe_width
))
7000 if (! EQ (p1
->fringes_outside_margins
, p2
->fringes_outside_margins
))
7002 if (! EQ (p1
->scroll_bar_width
, p2
->scroll_bar_width
))
7004 if (! EQ (p1
->vertical_scroll_bar_type
, p2
->vertical_scroll_bar_type
))
7011 DEFUN ("compare-window-configurations", Fcompare_window_configurations
,
7012 Scompare_window_configurations
, 2, 2, 0,
7013 doc
: /* Compare two window configurations as regards the structure of windows.
7014 This function ignores details such as the values of point and mark
7015 and scrolling positions. */)
7019 if (compare_window_configurations (x
, y
, 1))
7027 struct frame
*f
= make_terminal_frame ();
7028 XSETFRAME (selected_frame
, f
);
7029 Vterminal_frame
= selected_frame
;
7030 minibuf_window
= f
->minibuffer_window
;
7031 selected_window
= f
->selected_window
;
7032 last_nonminibuf_frame
= f
;
7034 window_initialized
= 1;
7040 Vwindow_list
= Qnil
;
7046 Qscroll_up
= intern ("scroll-up");
7047 staticpro (&Qscroll_up
);
7049 Qscroll_down
= intern ("scroll-down");
7050 staticpro (&Qscroll_down
);
7052 Qwindow_size_fixed
= intern ("window-size-fixed");
7053 staticpro (&Qwindow_size_fixed
);
7054 Fset (Qwindow_size_fixed
, Qnil
);
7056 staticpro (&Qwindow_configuration_change_hook
);
7057 Qwindow_configuration_change_hook
7058 = intern ("window-configuration-change-hook");
7060 Qwindowp
= intern ("windowp");
7061 staticpro (&Qwindowp
);
7063 Qwindow_configuration_p
= intern ("window-configuration-p");
7064 staticpro (&Qwindow_configuration_p
);
7066 Qwindow_live_p
= intern ("window-live-p");
7067 staticpro (&Qwindow_live_p
);
7069 Qtemp_buffer_show_hook
= intern ("temp-buffer-show-hook");
7070 staticpro (&Qtemp_buffer_show_hook
);
7072 staticpro (&Vwindow_list
);
7074 minibuf_selected_window
= Qnil
;
7075 staticpro (&minibuf_selected_window
);
7077 window_scroll_pixel_based_preserve_y
= -1;
7079 DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function
,
7080 doc
: /* Non-nil means call as function to display a help buffer.
7081 The function is called with one argument, the buffer to be displayed.
7082 Used by `with-output-to-temp-buffer'.
7083 If this function is used, then it must do the entire job of showing
7084 the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */);
7085 Vtemp_buffer_show_function
= Qnil
;
7087 DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function
,
7088 doc
: /* If non-nil, function to call to handle `display-buffer'.
7089 It will receive two args, the buffer and a flag which if non-nil means
7090 that the currently selected window is not acceptable.
7091 It should choose or create a window, display the specified buffer in it,
7092 and return the window.
7093 Commands such as `switch-to-buffer-other-window' and `find-file-other-window'
7094 work using this function. */);
7095 Vdisplay_buffer_function
= Qnil
;
7097 DEFVAR_LISP ("even-window-heights", &Veven_window_heights
,
7098 doc
: /* *If non-nil, `display-buffer' should even the window heights.
7099 If nil, `display-buffer' will leave the window configuration alone. */);
7100 Veven_window_heights
= Qt
;
7102 DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window
,
7103 doc
: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */);
7104 Vminibuf_scroll_window
= Qnil
;
7106 DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows
,
7107 doc
: /* Non-nil means to use `mode-line-inactive' face in non-selected windows.
7108 If the minibuffer is active, the `minibuffer-scroll-window' mode line
7109 is displayed in the `mode-line' face. */);
7110 mode_line_in_non_selected_windows
= 1;
7112 DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer
,
7113 doc
: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */);
7114 Vother_window_scroll_buffer
= Qnil
;
7116 DEFVAR_BOOL ("pop-up-frames", &pop_up_frames
,
7117 doc
: /* *Non-nil means `display-buffer' should make a separate frame. */);
7120 DEFVAR_BOOL ("auto-window-vscroll", &auto_window_vscroll_p
,
7121 doc
: /* *Non-nil means to automatically adjust `window-vscroll' to view tall lines. */);
7122 auto_window_vscroll_p
= 1;
7124 DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames
,
7125 doc
: /* *Non-nil means `display-buffer' should reuse frames.
7126 If the buffer in question is already displayed in a frame, raise that frame. */);
7127 display_buffer_reuse_frames
= 0;
7129 DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function
,
7130 doc
: /* Function to call to handle automatic new frame creation.
7131 It is called with no arguments and should return a newly created frame.
7133 A typical value might be `(lambda () (new-frame pop-up-frame-alist))'
7134 where `pop-up-frame-alist' would hold the default frame parameters. */);
7135 Vpop_up_frame_function
= Qnil
;
7137 DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names
,
7138 doc
: /* *List of buffer names that should have their own special frames.
7139 Displaying a buffer with `display-buffer' or `pop-to-buffer',
7140 if its name is in this list, makes a special frame for it
7141 using `special-display-function'. See also `special-display-regexps'.
7143 An element of the list can be a list instead of just a string.
7144 There are two ways to use a list as an element:
7145 (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...)
7146 In the first case, the FRAME-PARAMETERS are pairs of the form
7147 \(PARAMETER . VALUE); these parameter values are used to create the frame.
7148 In the second case, FUNCTION is called with BUFFER as the first argument,
7149 followed by the OTHER-ARGS--it can display BUFFER in any way it likes.
7150 All this is done by the function found in `special-display-function'.
7152 If the specified frame parameters include (same-buffer . t), the
7153 buffer is displayed in the currently selected window. Otherwise, if
7154 they include (same-frame . t), the buffer is displayed in a new window
7155 in the currently selected frame.
7157 If this variable appears \"not to work\", because you add a name to it
7158 but that buffer still appears in the selected window, look at the
7159 values of `same-window-buffer-names' and `same-window-regexps'.
7160 Those variables take precedence over this one. */);
7161 Vspecial_display_buffer_names
= Qnil
;
7163 DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps
,
7164 doc
: /* *List of regexps saying which buffers should have their own special frames.
7165 When displaying a buffer with `display-buffer' or `pop-to-buffer',
7166 if any regexp in this list matches the buffer name, it makes a
7167 special frame for the buffer by calling `special-display-function'.
7169 An element of the list can be a list instead of just a string.
7170 There are two ways to use a list as an element:
7171 (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...)
7172 In the first case, the FRAME-PARAMETERS are pairs of the form
7173 \(PARAMETER . VALUE); these parameter values are used to create the frame.
7174 In the second case, FUNCTION is called with BUFFER as the first argument,
7175 followed by the OTHER-ARGS--it can display the buffer in any way it likes.
7176 All this is done by the function found in `special-display-function'.
7178 If the specified frame parameters include (same-buffer . t), the
7179 buffer is displayed in the currently selected window. Otherwise, if
7180 they include (same-frame . t), the buffer is displayed in a new window
7181 in the currently selected frame.
7183 If this variable appears \"not to work\", because you add a regexp to it
7184 but the matching buffers still appear in the selected window, look at the
7185 values of `same-window-buffer-names' and `same-window-regexps'.
7186 Those variables take precedence over this one. */);
7187 Vspecial_display_regexps
= Qnil
;
7189 DEFVAR_LISP ("special-display-function", &Vspecial_display_function
,
7190 doc
: /* Function to call to make a new frame for a special buffer.
7191 It is called with two arguments, the buffer and optional buffer specific
7192 data, and should return a window displaying that buffer.
7193 The default value normally makes a separate frame for the buffer,
7194 using `special-display-frame-alist' to specify the frame parameters.
7195 But if the buffer specific data includes (same-buffer . t) then the
7196 buffer is displayed in the current selected window.
7197 Otherwise if it includes (same-frame . t) then the buffer is displayed in
7198 a new window in the currently selected frame.
7200 A buffer is special if it is listed in `special-display-buffer-names'
7201 or matches a regexp in `special-display-regexps'. */);
7202 Vspecial_display_function
= Qnil
;
7204 DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names
,
7205 doc
: /* *List of buffer names that should appear in the selected window.
7206 Displaying one of these buffers using `display-buffer' or `pop-to-buffer'
7207 switches to it in the selected window, rather than making it appear
7208 in some other window.
7210 An element of the list can be a cons cell instead of just a string.
7211 Then the car must be a string, which specifies the buffer name.
7212 This is for compatibility with `special-display-buffer-names';
7213 the cdr of the cons cell is ignored.
7215 See also `same-window-regexps'. */);
7216 Vsame_window_buffer_names
= Qnil
;
7218 DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps
,
7219 doc
: /* *List of regexps saying which buffers should appear in the selected window.
7220 If a buffer name matches one of these regexps, then displaying it
7221 using `display-buffer' or `pop-to-buffer' switches to it
7222 in the selected window, rather than making it appear in some other window.
7224 An element of the list can be a cons cell instead of just a string.
7225 Then the car must be a string, which specifies the buffer name.
7226 This is for compatibility with `special-display-buffer-names';
7227 the cdr of the cons cell is ignored.
7229 See also `same-window-buffer-names'. */);
7230 Vsame_window_regexps
= Qnil
;
7232 DEFVAR_BOOL ("pop-up-windows", &pop_up_windows
,
7233 doc
: /* *Non-nil means display-buffer should make new windows. */);
7236 DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines
,
7237 doc
: /* *Number of lines of continuity when scrolling by screenfuls. */);
7238 next_screen_context_lines
= 2;
7240 DEFVAR_INT ("split-height-threshold", &split_height_threshold
,
7241 doc
: /* *A window must be at least this tall to be eligible for splitting by `display-buffer'.
7242 If there is only one window, it is split regardless of this value. */);
7243 split_height_threshold
= 500;
7245 DEFVAR_INT ("window-min-height", &window_min_height
,
7246 doc
: /* *Delete any window less than this tall (including its mode line). */);
7247 window_min_height
= 4;
7249 DEFVAR_INT ("window-min-width", &window_min_width
,
7250 doc
: /* *Delete any window less than this wide. */);
7251 window_min_width
= 10;
7253 DEFVAR_LISP ("scroll-preserve-screen-position",
7254 &Vscroll_preserve_screen_position
,
7255 doc
: /* *Controls if scroll commands move point to keep its screen line unchanged.
7256 A value of nil means point does not keep its screen position except
7257 at the scroll margin or window boundary respectively.
7258 A value of t means point keeps its screen position if the scroll
7259 command moved it vertically out of the window, e.g. when scrolling
7261 Any other value means point always keeps its screen position. */);
7262 Vscroll_preserve_screen_position
= Qnil
;
7264 DEFVAR_LISP ("window-configuration-change-hook",
7265 &Vwindow_configuration_change_hook
,
7266 doc
: /* Functions to call when window configuration changes.
7267 The selected frame is the one whose configuration has changed. */);
7268 Vwindow_configuration_change_hook
= Qnil
;
7270 defsubr (&Sselected_window
);
7271 defsubr (&Sminibuffer_window
);
7272 defsubr (&Swindow_minibuffer_p
);
7273 defsubr (&Swindowp
);
7274 defsubr (&Swindow_live_p
);
7275 defsubr (&Spos_visible_in_window_p
);
7276 defsubr (&Swindow_buffer
);
7277 defsubr (&Swindow_height
);
7278 defsubr (&Swindow_width
);
7279 defsubr (&Swindow_hscroll
);
7280 defsubr (&Sset_window_hscroll
);
7281 defsubr (&Swindow_redisplay_end_trigger
);
7282 defsubr (&Sset_window_redisplay_end_trigger
);
7283 defsubr (&Swindow_edges
);
7284 defsubr (&Swindow_pixel_edges
);
7285 defsubr (&Swindow_inside_edges
);
7286 defsubr (&Swindow_inside_pixel_edges
);
7287 defsubr (&Scoordinates_in_window_p
);
7288 defsubr (&Swindow_at
);
7289 defsubr (&Swindow_point
);
7290 defsubr (&Swindow_start
);
7291 defsubr (&Swindow_end
);
7292 defsubr (&Sset_window_point
);
7293 defsubr (&Sset_window_start
);
7294 defsubr (&Swindow_dedicated_p
);
7295 defsubr (&Sset_window_dedicated_p
);
7296 defsubr (&Swindow_display_table
);
7297 defsubr (&Sset_window_display_table
);
7298 defsubr (&Snext_window
);
7299 defsubr (&Sprevious_window
);
7300 defsubr (&Sother_window
);
7301 defsubr (&Sget_lru_window
);
7302 defsubr (&Sget_largest_window
);
7303 defsubr (&Sget_buffer_window
);
7304 defsubr (&Sdelete_other_windows
);
7305 defsubr (&Sdelete_windows_on
);
7306 defsubr (&Sreplace_buffer_in_windows
);
7307 defsubr (&Sdelete_window
);
7308 defsubr (&Sset_window_buffer
);
7309 defsubr (&Sselect_window
);
7310 defsubr (&Sspecial_display_p
);
7311 defsubr (&Ssame_window_p
);
7312 defsubr (&Sdisplay_buffer
);
7313 defsubr (&Sforce_window_update
);
7314 defsubr (&Ssplit_window
);
7315 defsubr (&Senlarge_window
);
7316 defsubr (&Sshrink_window
);
7317 defsubr (&Sadjust_window_trailing_edge
);
7318 defsubr (&Sscroll_up
);
7319 defsubr (&Sscroll_down
);
7320 defsubr (&Sscroll_left
);
7321 defsubr (&Sscroll_right
);
7322 defsubr (&Sother_window_for_scrolling
);
7323 defsubr (&Sscroll_other_window
);
7324 defsubr (&Sminibuffer_selected_window
);
7325 defsubr (&Srecenter
);
7326 defsubr (&Swindow_text_height
);
7327 defsubr (&Smove_to_window_line
);
7328 defsubr (&Swindow_configuration_p
);
7329 defsubr (&Swindow_configuration_frame
);
7330 defsubr (&Sset_window_configuration
);
7331 defsubr (&Scurrent_window_configuration
);
7332 defsubr (&Ssave_window_excursion
);
7333 defsubr (&Swindow_tree
);
7334 defsubr (&Sset_window_margins
);
7335 defsubr (&Swindow_margins
);
7336 defsubr (&Sset_window_fringes
);
7337 defsubr (&Swindow_fringes
);
7338 defsubr (&Sset_window_scroll_bars
);
7339 defsubr (&Swindow_scroll_bars
);
7340 defsubr (&Swindow_vscroll
);
7341 defsubr (&Sset_window_vscroll
);
7342 defsubr (&Scompare_window_configurations
);
7343 defsubr (&Swindow_list
);
7349 initial_define_key (control_x_map
, '1', "delete-other-windows");
7350 initial_define_key (control_x_map
, '2', "split-window");
7351 initial_define_key (control_x_map
, '0', "delete-window");
7352 initial_define_key (control_x_map
, 'o', "other-window");
7353 initial_define_key (control_x_map
, '^', "enlarge-window");
7354 initial_define_key (control_x_map
, '<', "scroll-left");
7355 initial_define_key (control_x_map
, '>', "scroll-right");
7357 initial_define_key (global_map
, Ctl ('V'), "scroll-up");
7358 initial_define_key (meta_map
, Ctl ('V'), "scroll-other-window");
7359 initial_define_key (meta_map
, 'v', "scroll-down");
7361 initial_define_key (global_map
, Ctl('L'), "recenter");
7362 initial_define_key (meta_map
, 'r', "move-to-window-line");
7365 /* arch-tag: 90a9c576-0590-48f1-a5f1-6c96a0452d9f
7366 (do not change this comment) */