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 t.
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
, 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
= Qnil
;
3607 if (!NILP (XWINDOW (window
)->prev
))
3608 other
= upper
= XWINDOW (window
)->prev
;
3609 if (!NILP (XWINDOW (window
)->next
))
3610 other
= 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 See Info node `(elisp)Splitting Windows' for more details and examples.*/)
3783 (window
, size
, horflag
)
3784 Lisp_Object window
, size
, horflag
;
3786 register Lisp_Object
new;
3787 register struct window
*o
, *p
;
3789 register int size_int
;
3792 window
= selected_window
;
3794 CHECK_LIVE_WINDOW (window
);
3796 o
= XWINDOW (window
);
3797 fo
= XFRAME (WINDOW_FRAME (o
));
3801 if (!NILP (horflag
))
3802 /* Calculate the size of the left-hand window, by dividing
3803 the usable space in columns by two.
3804 We round up, since the left-hand window may include
3805 a dividing line, while the right-hand may not. */
3806 size_int
= (XFASTINT (o
->total_cols
) + 1) >> 1;
3808 size_int
= XFASTINT (o
->total_lines
) >> 1;
3812 CHECK_NUMBER (size
);
3813 size_int
= XINT (size
);
3816 if (MINI_WINDOW_P (o
))
3817 error ("Attempt to split minibuffer window");
3818 else if (window_fixed_size_p (o
, !NILP (horflag
), 0))
3819 error ("Attempt to split fixed-size window");
3821 check_min_window_sizes ();
3825 if (size_int
< window_min_height
)
3826 error ("Window height %d too small (after splitting)", size_int
);
3827 if (size_int
+ window_min_height
> XFASTINT (o
->total_lines
))
3828 error ("Window height %d too small (after splitting)",
3829 XFASTINT (o
->total_lines
) - size_int
);
3830 if (NILP (o
->parent
)
3831 || NILP (XWINDOW (o
->parent
)->vchild
))
3833 make_dummy_parent (window
);
3835 XWINDOW (new)->vchild
= window
;
3840 if (size_int
< window_min_width
)
3841 error ("Window width %d too small (after splitting)", size_int
);
3843 if (size_int
+ window_min_width
> XFASTINT (o
->total_cols
))
3844 error ("Window width %d too small (after splitting)",
3845 XFASTINT (o
->total_cols
) - size_int
);
3846 if (NILP (o
->parent
)
3847 || NILP (XWINDOW (o
->parent
)->hchild
))
3849 make_dummy_parent (window
);
3851 XWINDOW (new)->hchild
= window
;
3855 /* Now we know that window's parent is a vertical combination
3856 if we are dividing vertically, or a horizontal combination
3857 if we are making side-by-side windows */
3859 windows_or_buffers_changed
++;
3860 FRAME_WINDOW_SIZES_CHANGED (fo
) = 1;
3861 new = make_window ();
3864 p
->frame
= o
->frame
;
3866 if (!NILP (p
->next
))
3867 XWINDOW (p
->next
)->prev
= new;
3870 p
->parent
= o
->parent
;
3872 p
->window_end_valid
= Qnil
;
3873 bzero (&p
->last_cursor
, sizeof p
->last_cursor
);
3875 /* Duplicate special geometry settings. */
3877 p
->left_margin_cols
= o
->left_margin_cols
;
3878 p
->right_margin_cols
= o
->right_margin_cols
;
3879 p
->left_fringe_width
= o
->left_fringe_width
;
3880 p
->right_fringe_width
= o
->right_fringe_width
;
3881 p
->fringes_outside_margins
= o
->fringes_outside_margins
;
3882 p
->scroll_bar_width
= o
->scroll_bar_width
;
3883 p
->vertical_scroll_bar_type
= o
->vertical_scroll_bar_type
;
3885 /* Apportion the available frame space among the two new windows */
3887 if (!NILP (horflag
))
3889 p
->total_lines
= o
->total_lines
;
3890 p
->top_line
= o
->top_line
;
3891 XSETFASTINT (p
->total_cols
, XFASTINT (o
->total_cols
) - size_int
);
3892 XSETFASTINT (o
->total_cols
, size_int
);
3893 XSETFASTINT (p
->left_col
, XFASTINT (o
->left_col
) + size_int
);
3894 adjust_window_margins (p
);
3895 adjust_window_margins (o
);
3899 p
->left_col
= o
->left_col
;
3900 p
->total_cols
= o
->total_cols
;
3901 XSETFASTINT (p
->total_lines
, XFASTINT (o
->total_lines
) - size_int
);
3902 XSETFASTINT (o
->total_lines
, size_int
);
3903 XSETFASTINT (p
->top_line
, XFASTINT (o
->top_line
) + size_int
);
3906 /* Adjust glyph matrices. */
3909 Fset_window_buffer (new, o
->buffer
, Qt
);
3913 DEFUN ("enlarge-window", Fenlarge_window
, Senlarge_window
, 1, 2, "p",
3914 doc
: /* Make current window ARG lines bigger.
3915 From program, optional second arg non-nil means grow sideways ARG columns.
3916 Interactively, if an argument is not given, make the window one line bigger.
3917 If HORIZONTAL is non-nil, enlarge horizontally instead of vertically.
3918 This function can delete windows, even the second window, if they get
3921 Lisp_Object arg
, horizontal
;
3924 enlarge_window (selected_window
, XINT (arg
), !NILP (horizontal
));
3926 if (! NILP (Vwindow_configuration_change_hook
))
3927 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
3932 DEFUN ("shrink-window", Fshrink_window
, Sshrink_window
, 1, 2, "p",
3933 doc
: /* Make current window ARG lines smaller.
3934 From program, optional second arg non-nil means shrink sideways arg columns.
3935 Interactively, if an argument is not given, make the window one line smaller. Only
3936 siblings to the right or below are changed. */)
3938 Lisp_Object arg
, side
;
3941 enlarge_window (selected_window
, -XINT (arg
), !NILP (side
));
3943 if (! NILP (Vwindow_configuration_change_hook
))
3944 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
3950 window_height (window
)
3953 register struct window
*p
= XWINDOW (window
);
3954 return WINDOW_TOTAL_LINES (p
);
3958 window_width (window
)
3961 register struct window
*p
= XWINDOW (window
);
3962 return WINDOW_TOTAL_COLS (p
);
3967 *(horiz_flag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line))
3969 #define CURSIZE(w) \
3970 *(horiz_flag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines))
3973 /* Enlarge WINDOW by DELTA.
3974 HORIZ_FLAG nonzero means enlarge it horizontally;
3975 zero means do it vertically.
3977 Siblings of the selected window are resized to fulfill the size
3978 request. If they become too small in the process, they will be
3982 enlarge_window (window
, delta
, horiz_flag
)
3984 int delta
, horiz_flag
;
3986 Lisp_Object parent
, next
, prev
;
3990 int (*sizefun
) P_ ((Lisp_Object
))
3991 = horiz_flag
? window_width
: window_height
;
3992 void (*setsizefun
) P_ ((Lisp_Object
, int, int))
3993 = (horiz_flag
? set_window_width
: set_window_height
);
3995 /* Check values of window_min_width and window_min_height for
3997 check_min_window_sizes ();
3999 /* Give up if this window cannot be resized. */
4000 if (window_fixed_size_p (XWINDOW (window
), horiz_flag
, 1))
4001 error ("Window is not resizable");
4003 /* Find the parent of the selected window. */
4006 p
= XWINDOW (window
);
4012 error ("No other window to side of this one");
4017 ? !NILP (XWINDOW (parent
)->hchild
)
4018 : !NILP (XWINDOW (parent
)->vchild
))
4024 sizep
= &CURSIZE (window
);
4027 register int maxdelta
;
4029 /* Compute the maximum size increment this window can have. */
4031 maxdelta
= (!NILP (parent
) ? (*sizefun
) (parent
) - XINT (*sizep
)
4032 /* This is a main window followed by a minibuffer. */
4033 : !NILP (p
->next
) ? ((*sizefun
) (p
->next
)
4034 - window_min_size (XWINDOW (p
->next
),
4036 /* This is a minibuffer following a main window. */
4037 : !NILP (p
->prev
) ? ((*sizefun
) (p
->prev
)
4038 - window_min_size (XWINDOW (p
->prev
),
4040 /* This is a frame with only one window, a minibuffer-only
4041 or a minibufferless frame. */
4044 if (delta
> maxdelta
)
4045 /* This case traps trying to make the minibuffer
4046 the full frame, or make the only window aside from the
4047 minibuffer the full frame. */
4051 if (XINT (*sizep
) + delta
< window_min_size (XWINDOW (window
), horiz_flag
, 0, 0))
4053 delete_window (window
);
4060 /* Find the total we can get from other siblings without deleting them. */
4062 for (next
= p
->next
; ! NILP (next
); next
= XWINDOW (next
)->next
)
4063 maximum
+= (*sizefun
) (next
) - window_min_size (XWINDOW (next
),
4065 for (prev
= p
->prev
; ! NILP (prev
); prev
= XWINDOW (prev
)->prev
)
4066 maximum
+= (*sizefun
) (prev
) - window_min_size (XWINDOW (prev
),
4069 /* If we can get it all from them without deleting them, do so. */
4070 if (delta
<= maximum
)
4072 Lisp_Object first_unaffected
;
4073 Lisp_Object first_affected
;
4078 first_affected
= window
;
4079 /* Look at one sibling at a time,
4080 moving away from this window in both directions alternately,
4081 and take as much as we can get without deleting that sibling. */
4083 && (!NILP (next
) || !NILP (prev
)))
4087 int this_one
= ((*sizefun
) (next
)
4088 - window_min_size (XWINDOW (next
),
4089 horiz_flag
, 0, &fixed_p
));
4092 if (this_one
> delta
)
4095 (*setsizefun
) (next
, (*sizefun
) (next
) - this_one
, 0);
4096 (*setsizefun
) (window
, XINT (*sizep
) + this_one
, 0);
4101 next
= XWINDOW (next
)->next
;
4109 int this_one
= ((*sizefun
) (prev
)
4110 - window_min_size (XWINDOW (prev
),
4111 horiz_flag
, 0, &fixed_p
));
4114 if (this_one
> delta
)
4117 first_affected
= prev
;
4119 (*setsizefun
) (prev
, (*sizefun
) (prev
) - this_one
, 0);
4120 (*setsizefun
) (window
, XINT (*sizep
) + this_one
, 0);
4125 prev
= XWINDOW (prev
)->prev
;
4129 xassert (delta
== 0);
4131 /* Now recalculate the edge positions of all the windows affected,
4132 based on the new sizes. */
4133 first_unaffected
= next
;
4134 prev
= first_affected
;
4135 for (next
= XWINDOW (prev
)->next
; ! EQ (next
, first_unaffected
);
4136 prev
= next
, next
= XWINDOW (next
)->next
)
4138 XSETINT (CURBEG (next
), XINT (CURBEG (prev
)) + (*sizefun
) (prev
));
4139 /* This does not change size of NEXT,
4140 but it propagates the new top edge to its children */
4141 (*setsizefun
) (next
, (*sizefun
) (next
), 0);
4146 register int delta1
;
4147 register int opht
= (*sizefun
) (parent
);
4149 if (opht
<= XINT (*sizep
) + delta
)
4151 /* If trying to grow this window to or beyond size of the parent,
4152 just delete all the sibling windows. */
4153 Lisp_Object start
, tem
, next
;
4155 start
= XWINDOW (parent
)->vchild
;
4157 start
= XWINDOW (parent
)->hchild
;
4159 /* Delete any siblings that come after WINDOW. */
4160 tem
= XWINDOW (window
)->next
;
4161 while (! NILP (tem
))
4163 next
= XWINDOW (tem
)->next
;
4164 delete_window (tem
);
4168 /* Delete any siblings that come after WINDOW.
4169 Note that if START is not WINDOW, then WINDOW still
4170 Fhas siblings, so WINDOW has not yet replaced its parent. */
4172 while (! EQ (tem
, window
))
4174 next
= XWINDOW (tem
)->next
;
4175 delete_window (tem
);
4181 /* Otherwise, make delta1 just right so that if we add
4182 delta1 lines to this window and to the parent, and then
4183 shrink the parent back to its original size, the new
4184 proportional size of this window will increase by delta.
4186 The function size_window will compute the new height h'
4187 of the window from delta1 as:
4190 x = delta1 - delta1/n * n for the 1st resizable child
4193 where n is the number of children that can be resized.
4194 We can ignore x by choosing a delta1 that is a multiple of
4195 n. We want the height of this window to come out as
4205 The number of children n equals the number of resizable
4206 children of this window + 1 because we know window itself
4207 is resizable (otherwise we would have signalled an error). */
4209 struct window
*w
= XWINDOW (window
);
4213 for (s
= w
->next
; !NILP (s
); s
= XWINDOW (s
)->next
)
4214 if (!window_fixed_size_p (XWINDOW (s
), horiz_flag
, 0))
4216 for (s
= w
->prev
; !NILP (s
); s
= XWINDOW (s
)->prev
)
4217 if (!window_fixed_size_p (XWINDOW (s
), horiz_flag
, 0))
4222 /* Add delta1 lines or columns to this window, and to the parent,
4223 keeping things consistent while not affecting siblings. */
4224 XSETINT (CURSIZE (parent
), opht
+ delta1
);
4225 (*setsizefun
) (window
, XINT (*sizep
) + delta1
, 0);
4227 /* Squeeze out delta1 lines or columns from our parent,
4228 shriking this window and siblings proportionately.
4229 This brings parent back to correct size.
4230 Delta1 was calculated so this makes this window the desired size,
4231 taking it all out of the siblings. */
4232 (*setsizefun
) (parent
, opht
, 0);
4237 XSETFASTINT (p
->last_modified
, 0);
4238 XSETFASTINT (p
->last_overlay_modified
, 0);
4240 /* Adjust glyph matrices. */
4241 adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window
))));
4245 /* Adjust the size of WINDOW by DELTA, moving only its trailing edge.
4246 HORIZ_FLAG nonzero means adjust the width, moving the right edge.
4247 zero means adjust the height, moving the bottom edge.
4249 Following siblings of the selected window are resized to fulfill
4250 the size request. If they become too small in the process, they
4251 are not deleted; instead, we signal an error. */
4254 adjust_window_trailing_edge (window
, delta
, horiz_flag
)
4256 int delta
, horiz_flag
;
4258 Lisp_Object parent
, child
;
4260 Lisp_Object old_config
= Fcurrent_window_configuration (Qnil
);
4261 int delcount
= window_deletion_count
;
4263 /* Check values of window_min_width and window_min_height for
4265 check_min_window_sizes ();
4268 window
= Fselected_window ();
4270 CHECK_WINDOW (window
);
4272 /* Give up if this window cannot be resized. */
4273 if (window_fixed_size_p (XWINDOW (window
), horiz_flag
, 1))
4274 error ("Window is not resizable");
4278 Lisp_Object first_parallel
= Qnil
;
4280 p
= XWINDOW (window
);
4283 if (NILP (XWINDOW (window
)->next
))
4285 Fset_window_configuration (old_config
);
4286 error ("No other window following this one");
4289 /* See if this level has windows in parallel in the specified
4290 direction. If so, set FIRST_PARALLEL to the first one. */
4293 if (! NILP (parent
) && !NILP (XWINDOW (parent
)->vchild
))
4294 first_parallel
= XWINDOW (parent
)->vchild
;
4298 if (! NILP (parent
) && !NILP (XWINDOW (parent
)->hchild
))
4299 first_parallel
= XWINDOW (parent
)->hchild
;
4302 /* Don't make this window too small. */
4303 if (XINT (CURSIZE (window
)) + delta
4304 < (horiz_flag
? window_min_width
: window_min_height
))
4306 Fset_window_configuration (old_config
);
4307 error ("Cannot adjust window size as specified");
4310 /* Clear out some redisplay caches. */
4311 XSETFASTINT (p
->last_modified
, 0);
4312 XSETFASTINT (p
->last_overlay_modified
, 0);
4314 /* Adjust this window's edge. */
4315 XSETINT (CURSIZE (window
),
4316 XINT (CURSIZE (window
)) + delta
);
4318 /* If this window has following siblings in the desired dimension,
4319 make them smaller, and exit the loop.
4321 (If we reach the top of the tree and can never do this,
4322 we will fail and report an error, above.) */
4323 if (NILP (first_parallel
))
4325 if (!NILP (XWINDOW (window
)->next
))
4327 /* This may happen for the minibuffer. In that case
4328 the window_deletion_count check below does not work. */
4329 if (XINT (CURSIZE (p
->next
)) - delta
<= 0)
4331 Fset_window_configuration (old_config
);
4332 error ("Cannot adjust window size as specified");
4335 XSETINT (CURBEG (p
->next
),
4336 XINT (CURBEG (p
->next
)) + delta
);
4337 size_window (p
->next
, XINT (CURSIZE (p
->next
)) - delta
,
4343 /* Here we have a chain of parallel siblings, in the other dimension.
4344 Change the size of the other siblings. */
4345 for (child
= first_parallel
;
4347 child
= XWINDOW (child
)->next
)
4348 if (! EQ (child
, window
))
4349 size_window (child
, XINT (CURSIZE (child
)) + delta
,
4355 /* If we made a window so small it got deleted,
4356 we failed. Report failure. */
4357 if (delcount
!= window_deletion_count
)
4359 Fset_window_configuration (old_config
);
4360 error ("Cannot adjust window size as specified");
4363 /* Adjust glyph matrices. */
4364 adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window
))));
4370 DEFUN ("adjust-window-trailing-edge", Fadjust_window_trailing_edge
,
4371 Sadjust_window_trailing_edge
, 3, 3, 0,
4372 doc
: /* Adjust the bottom or right edge of WINDOW by DELTA.
4373 If HORIZONTAL is non-nil, that means adjust the width, moving the right edge.
4374 Otherwise, adjust the height, moving the bottom edge.
4376 Following siblings of the selected window are resized to fulfill
4377 the size request. If they become too small in the process, they
4378 are not deleted; instead, we signal an error. */)
4379 (window
, delta
, horizontal
)
4380 Lisp_Object window
, delta
, horizontal
;
4382 CHECK_NUMBER (delta
);
4383 adjust_window_trailing_edge (window
, XINT (delta
), !NILP (horizontal
));
4385 if (! NILP (Vwindow_configuration_change_hook
))
4386 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
4393 /***********************************************************************
4394 Resizing Mini-Windows
4395 ***********************************************************************/
4397 static void shrink_window_lowest_first
P_ ((struct window
*, int));
4399 enum save_restore_action
4406 static int save_restore_orig_size
P_ ((struct window
*,
4407 enum save_restore_action
));
4409 /* Shrink windows rooted in window W to HEIGHT. Take the space needed
4410 from lowest windows first. */
4413 shrink_window_lowest_first (w
, height
)
4421 xassert (!MINI_WINDOW_P (w
));
4423 /* Set redisplay hints. */
4424 XSETFASTINT (w
->last_modified
, 0);
4425 XSETFASTINT (w
->last_overlay_modified
, 0);
4426 windows_or_buffers_changed
++;
4427 FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w
))) = 1;
4429 old_height
= XFASTINT (w
->total_lines
);
4430 XSETFASTINT (w
->total_lines
, height
);
4432 if (!NILP (w
->hchild
))
4434 for (child
= w
->hchild
; !NILP (child
); child
= c
->next
)
4436 c
= XWINDOW (child
);
4437 c
->top_line
= w
->top_line
;
4438 shrink_window_lowest_first (c
, height
);
4441 else if (!NILP (w
->vchild
))
4443 Lisp_Object last_child
;
4444 int delta
= old_height
- height
;
4449 /* Find the last child. We are taking space from lowest windows
4450 first, so we iterate over children from the last child
4452 for (child
= w
->vchild
; !NILP (child
); child
= XWINDOW (child
)->next
)
4455 /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */
4456 for (child
= last_child
; delta
&& !NILP (child
); child
= c
->prev
)
4460 c
= XWINDOW (child
);
4461 this_one
= XFASTINT (c
->total_lines
) - MIN_SAFE_WINDOW_HEIGHT
;
4463 if (this_one
> delta
)
4466 shrink_window_lowest_first (c
, XFASTINT (c
->total_lines
) - this_one
);
4470 /* Compute new positions. */
4471 last_top
= XINT (w
->top_line
);
4472 for (child
= w
->vchild
; !NILP (child
); child
= c
->next
)
4474 c
= XWINDOW (child
);
4475 c
->top_line
= make_number (last_top
);
4476 shrink_window_lowest_first (c
, XFASTINT (c
->total_lines
));
4477 last_top
+= XFASTINT (c
->total_lines
);
4483 /* Save, restore, or check positions and sizes in the window tree
4484 rooted at W. ACTION says what to do.
4486 If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and
4487 orig_total_lines members are valid for all windows in the window
4488 tree. Value is non-zero if they are valid.
4490 If ACTION is SAVE_ORIG_SIZES, save members top and height in
4491 orig_top_line and orig_total_lines for all windows in the tree.
4493 If ACTION is RESTORE_ORIG_SIZES, restore top and height from values
4494 stored in orig_top_line and orig_total_lines for all windows. */
4497 save_restore_orig_size (w
, action
)
4499 enum save_restore_action action
;
4505 if (!NILP (w
->hchild
))
4507 if (!save_restore_orig_size (XWINDOW (w
->hchild
), action
))
4510 else if (!NILP (w
->vchild
))
4512 if (!save_restore_orig_size (XWINDOW (w
->vchild
), action
))
4518 case CHECK_ORIG_SIZES
:
4519 if (!INTEGERP (w
->orig_top_line
) || !INTEGERP (w
->orig_total_lines
))
4523 case SAVE_ORIG_SIZES
:
4524 w
->orig_top_line
= w
->top_line
;
4525 w
->orig_total_lines
= w
->total_lines
;
4526 XSETFASTINT (w
->last_modified
, 0);
4527 XSETFASTINT (w
->last_overlay_modified
, 0);
4530 case RESTORE_ORIG_SIZES
:
4531 xassert (INTEGERP (w
->orig_top_line
) && INTEGERP (w
->orig_total_lines
));
4532 w
->top_line
= w
->orig_top_line
;
4533 w
->total_lines
= w
->orig_total_lines
;
4534 w
->orig_total_lines
= w
->orig_top_line
= Qnil
;
4535 XSETFASTINT (w
->last_modified
, 0);
4536 XSETFASTINT (w
->last_overlay_modified
, 0);
4543 w
= NILP (w
->next
) ? NULL
: XWINDOW (w
->next
);
4550 /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can
4551 without deleting other windows. */
4554 grow_mini_window (w
, delta
)
4558 struct frame
*f
= XFRAME (w
->frame
);
4559 struct window
*root
;
4561 xassert (MINI_WINDOW_P (w
));
4562 xassert (delta
>= 0);
4564 /* Check values of window_min_width and window_min_height for
4566 check_min_window_sizes ();
4568 /* Compute how much we can enlarge the mini-window without deleting
4570 root
= XWINDOW (FRAME_ROOT_WINDOW (f
));
4573 int min_height
= window_min_size (root
, 0, 0, 0);
4574 if (XFASTINT (root
->total_lines
) - delta
< min_height
)
4575 /* Note that the root window may already be smaller than
4577 delta
= max (0, XFASTINT (root
->total_lines
) - min_height
);
4582 /* Save original window sizes and positions, if not already done. */
4583 if (!save_restore_orig_size (root
, CHECK_ORIG_SIZES
))
4584 save_restore_orig_size (root
, SAVE_ORIG_SIZES
);
4586 /* Shrink other windows. */
4587 shrink_window_lowest_first (root
, XFASTINT (root
->total_lines
) - delta
);
4589 /* Grow the mini-window. */
4590 w
->top_line
= make_number (XFASTINT (root
->top_line
) + XFASTINT (root
->total_lines
));
4591 w
->total_lines
= make_number (XFASTINT (w
->total_lines
) + delta
);
4592 XSETFASTINT (w
->last_modified
, 0);
4593 XSETFASTINT (w
->last_overlay_modified
, 0);
4600 /* Shrink mini-window W. If there is recorded info about window sizes
4601 before a call to grow_mini_window, restore recorded window sizes.
4602 Otherwise, if the mini-window is higher than 1 line, resize it to 1
4606 shrink_mini_window (w
)
4609 struct frame
*f
= XFRAME (w
->frame
);
4610 struct window
*root
= XWINDOW (FRAME_ROOT_WINDOW (f
));
4612 if (save_restore_orig_size (root
, CHECK_ORIG_SIZES
))
4614 save_restore_orig_size (root
, RESTORE_ORIG_SIZES
);
4616 FRAME_WINDOW_SIZES_CHANGED (f
) = 1;
4617 windows_or_buffers_changed
= 1;
4619 else if (XFASTINT (w
->total_lines
) > 1)
4621 /* Distribute the additional lines of the mini-window
4622 among the other windows. */
4624 XSETWINDOW (window
, w
);
4625 enlarge_window (window
, 1 - XFASTINT (w
->total_lines
), 0);
4631 /* Mark window cursors off for all windows in the window tree rooted
4632 at W by setting their phys_cursor_on_p flag to zero. Called from
4633 xterm.c, e.g. when a frame is cleared and thereby all cursors on
4634 the frame are cleared. */
4637 mark_window_cursors_off (w
)
4642 if (!NILP (w
->hchild
))
4643 mark_window_cursors_off (XWINDOW (w
->hchild
));
4644 else if (!NILP (w
->vchild
))
4645 mark_window_cursors_off (XWINDOW (w
->vchild
));
4647 w
->phys_cursor_on_p
= 0;
4649 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
4654 /* Return number of lines of text (not counting mode lines) in W. */
4657 window_internal_height (w
)
4660 int ht
= XFASTINT (w
->total_lines
);
4662 if (!MINI_WINDOW_P (w
))
4664 if (!NILP (w
->parent
)
4665 || !NILP (w
->vchild
)
4666 || !NILP (w
->hchild
)
4669 || WINDOW_WANTS_MODELINE_P (w
))
4672 if (WINDOW_WANTS_HEADER_LINE_P (w
))
4680 /* Return the number of columns in W.
4681 Don't count columns occupied by scroll bars or the vertical bar
4682 separating W from the sibling to its right. */
4685 window_box_text_cols (w
)
4688 struct frame
*f
= XFRAME (WINDOW_FRAME (w
));
4689 int width
= XINT (w
->total_cols
);
4691 if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w
))
4692 /* Scroll bars occupy a few columns. */
4693 width
-= WINDOW_CONFIG_SCROLL_BAR_COLS (w
);
4694 else if (!FRAME_WINDOW_P (f
)
4695 && !WINDOW_RIGHTMOST_P (w
) && !WINDOW_FULL_WIDTH_P (w
))
4696 /* The column of `|' characters separating side-by-side windows
4697 occupies one column only. */
4700 if (FRAME_WINDOW_P (f
))
4701 /* On window-systems, fringes and display margins cannot be
4702 used for normal text. */
4703 width
-= (WINDOW_FRINGE_COLS (w
)
4704 + WINDOW_LEFT_MARGIN_COLS (w
)
4705 + WINDOW_RIGHT_MARGIN_COLS (w
));
4711 /************************************************************************
4713 ***********************************************************************/
4715 /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll
4716 N screen-fulls, which is defined as the height of the window minus
4717 next_screen_context_lines. If WHOLE is zero, scroll up N lines
4718 instead. Negative values of N mean scroll down. NOERROR non-zero
4719 means don't signal an error if we try to move over BEGV or ZV,
4723 window_scroll (window
, n
, whole
, noerror
)
4731 /* If we must, use the pixel-based version which is much slower than
4732 the line-based one but can handle varying line heights. */
4733 if (FRAME_WINDOW_P (XFRAME (XWINDOW (window
)->frame
)))
4734 window_scroll_pixel_based (window
, n
, whole
, noerror
);
4736 window_scroll_line_based (window
, n
, whole
, noerror
);
4742 /* Implementation of window_scroll that works based on pixel line
4743 heights. See the comment of window_scroll for parameter
4747 window_scroll_pixel_based (window
, n
, whole
, noerror
)
4754 struct window
*w
= XWINDOW (window
);
4755 struct text_pos start
;
4757 int this_scroll_margin
;
4758 /* True if we fiddled the window vscroll field without really scrolling. */
4761 SET_TEXT_POS_FROM_MARKER (start
, w
->start
);
4763 /* If PT is not visible in WINDOW, move back one half of
4764 the screen. Allow PT to be partially visible, otherwise
4765 something like (scroll-down 1) with PT in the line before
4766 the partially visible one would recenter. */
4767 tem
= Fpos_visible_in_window_p (make_number (PT
), window
, Qt
);
4770 /* Move backward half the height of the window. Performance note:
4771 vmotion used here is about 10% faster, but would give wrong
4772 results for variable height lines. */
4773 init_iterator (&it
, w
, PT
, PT_BYTE
, NULL
, DEFAULT_FACE_ID
);
4774 it
.current_y
= it
.last_visible_y
;
4775 move_it_vertically_backward (&it
, window_box_height (w
) / 2);
4777 /* The function move_iterator_vertically may move over more than
4778 the specified y-distance. If it->w is small, e.g. a
4779 mini-buffer window, we may end up in front of the window's
4780 display area. This is the case when Start displaying at the
4781 start of the line containing PT in this case. */
4782 if (it
.current_y
<= 0)
4784 init_iterator (&it
, w
, PT
, PT_BYTE
, NULL
, DEFAULT_FACE_ID
);
4785 move_it_vertically_backward (&it
, 0);
4789 start
= it
.current
.pos
;
4791 else if (auto_window_vscroll_p
)
4793 if (tem
= XCAR (XCDR (XCDR (tem
))), CONSP (tem
))
4796 int dy
= WINDOW_FRAME_LINE_HEIGHT (w
);
4798 dy
= max ((window_box_height (w
)
4799 - next_screen_context_lines
* dy
),
4803 if (n
< 0 && (px
= XINT (XCAR (tem
))) > 0)
4805 px
= max (0, -w
->vscroll
- min (px
, -dy
));
4806 Fset_window_vscroll (window
, make_number (px
), Qt
);
4809 if (n
> 0 && (px
= XINT (XCDR (tem
))) > 0)
4811 px
= max (0, -w
->vscroll
+ min (px
, dy
));
4812 Fset_window_vscroll (window
, make_number (px
), Qt
);
4816 Fset_window_vscroll (window
, make_number (0), Qt
);
4819 /* If scroll_preserve_screen_position is non-nil, we try to set
4820 point in the same window line as it is now, so get that line. */
4821 if (!NILP (Vscroll_preserve_screen_position
))
4823 /* We preserve the goal pixel coordinate across consecutive
4824 calls to scroll-up or scroll-down. This avoids the
4825 possibility of point becoming "stuck" on a tall line when
4826 scrolling by one line. */
4827 if (window_scroll_pixel_based_preserve_y
< 0
4828 || (!EQ (current_kboard
->Vlast_command
, Qscroll_up
)
4829 && !EQ (current_kboard
->Vlast_command
, Qscroll_down
)))
4831 start_display (&it
, w
, start
);
4832 move_it_to (&it
, PT
, -1, -1, -1, MOVE_TO_POS
);
4833 window_scroll_pixel_based_preserve_y
= it
.current_y
;
4837 window_scroll_pixel_based_preserve_y
= -1;
4839 /* Move iterator it from start the specified distance forward or
4840 backward. The result is the new window start. */
4841 start_display (&it
, w
, start
);
4844 int start_pos
= IT_CHARPOS (it
);
4845 int dy
= WINDOW_FRAME_LINE_HEIGHT (w
);
4846 dy
= max ((window_box_height (w
)
4847 - next_screen_context_lines
* dy
),
4850 /* Note that move_it_vertically always moves the iterator to the
4851 start of a line. So, if the last line doesn't have a newline,
4852 we would end up at the start of the line ending at ZV. */
4855 move_it_vertically_backward (&it
, -dy
);
4856 /* Ensure we actually does move, e.g. in case we are currently
4857 looking at an image that is taller that the window height. */
4858 while (start_pos
== IT_CHARPOS (it
)
4859 && start_pos
> BEGV
)
4860 move_it_by_lines (&it
, -1, 1);
4864 move_it_to (&it
, ZV
, -1, it
.current_y
+ dy
, -1,
4865 MOVE_TO_POS
| MOVE_TO_Y
);
4866 /* Ensure we actually does move, e.g. in case we are currently
4867 looking at an image that is taller that the window height. */
4868 while (start_pos
== IT_CHARPOS (it
)
4870 move_it_by_lines (&it
, 1, 1);
4874 move_it_by_lines (&it
, n
, 1);
4876 /* We failed if we find ZV is already on the screen (scrolling up,
4877 means there's nothing past the end), or if we can't start any
4878 earlier (scrolling down, means there's nothing past the top). */
4879 if ((n
> 0 && IT_CHARPOS (it
) == ZV
)
4880 || (n
< 0 && IT_CHARPOS (it
) == CHARPOS (start
)))
4882 if (IT_CHARPOS (it
) == ZV
)
4884 if (it
.current_y
< it
.last_visible_y
4885 && (it
.current_y
+ it
.max_ascent
+ it
.max_descent
4886 > it
.last_visible_y
))
4888 /* The last line was only partially visible, make it fully
4890 w
->vscroll
= (it
.last_visible_y
4891 - it
.current_y
+ it
.max_ascent
+ it
.max_descent
);
4892 adjust_glyphs (it
.f
);
4897 Fsignal (Qend_of_buffer
, Qnil
);
4901 if (w
->vscroll
!= 0)
4902 /* The first line was only partially visible, make it fully
4908 Fsignal (Qbeginning_of_buffer
, Qnil
);
4911 /* If control gets here, then we vscrolled. */
4913 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
4915 /* Don't try to change the window start below. */
4921 int pos
= IT_CHARPOS (it
);
4924 /* If in the middle of a multi-glyph character move forward to
4925 the next character. */
4926 if (in_display_vector_p (&it
))
4929 move_it_to (&it
, pos
, -1, -1, -1, MOVE_TO_POS
);
4932 /* Set the window start, and set up the window for redisplay. */
4933 set_marker_restricted (w
->start
, make_number (pos
),
4935 bytepos
= XMARKER (w
->start
)->bytepos
;
4936 w
->start_at_line_beg
= ((pos
== BEGV
|| FETCH_BYTE (bytepos
- 1) == '\n')
4938 w
->update_mode_line
= Qt
;
4939 XSETFASTINT (w
->last_modified
, 0);
4940 XSETFASTINT (w
->last_overlay_modified
, 0);
4941 /* Set force_start so that redisplay_window will run the
4942 window-scroll-functions. */
4943 w
->force_start
= Qt
;
4946 /* The rest of this function uses current_y in a nonstandard way,
4947 not including the height of the header line if any. */
4948 it
.current_y
= it
.vpos
= 0;
4950 /* Move PT out of scroll margins.
4951 This code wants current_y to be zero at the window start position
4952 even if there is a header line. */
4953 this_scroll_margin
= max (0, scroll_margin
);
4954 this_scroll_margin
= min (this_scroll_margin
, XFASTINT (w
->total_lines
) / 4);
4955 this_scroll_margin
*= FRAME_LINE_HEIGHT (it
.f
);
4959 /* We moved the window start towards ZV, so PT may be now
4960 in the scroll margin at the top. */
4961 move_it_to (&it
, PT
, -1, -1, -1, MOVE_TO_POS
);
4962 if (IT_CHARPOS (it
) == PT
&& it
.current_y
>= this_scroll_margin
4963 && (NILP (Vscroll_preserve_screen_position
)
4964 || EQ (Vscroll_preserve_screen_position
, Qt
)))
4965 /* We found PT at a legitimate height. Leave it alone. */
4967 else if (window_scroll_pixel_based_preserve_y
>= 0)
4969 /* If we have a header line, take account of it.
4970 This is necessary because we set it.current_y to 0, above. */
4971 move_it_to (&it
, -1, -1,
4972 window_scroll_pixel_based_preserve_y
4973 - (WINDOW_WANTS_HEADER_LINE_P (w
) ? 1 : 0 ),
4975 SET_PT_BOTH (IT_CHARPOS (it
), IT_BYTEPOS (it
));
4979 while (it
.current_y
< this_scroll_margin
)
4981 int prev
= it
.current_y
;
4982 move_it_by_lines (&it
, 1, 1);
4983 if (prev
== it
.current_y
)
4986 SET_PT_BOTH (IT_CHARPOS (it
), IT_BYTEPOS (it
));
4991 int charpos
, bytepos
;
4994 /* Save our position, for the
4995 window_scroll_pixel_based_preserve_y case. */
4996 charpos
= IT_CHARPOS (it
);
4997 bytepos
= IT_BYTEPOS (it
);
4999 /* We moved the window start towards BEGV, so PT may be now
5000 in the scroll margin at the bottom. */
5001 move_it_to (&it
, PT
, -1,
5002 (it
.last_visible_y
- CURRENT_HEADER_LINE_HEIGHT (w
)
5003 - this_scroll_margin
- 1),
5005 MOVE_TO_POS
| MOVE_TO_Y
);
5007 /* Save our position, in case it's correct. */
5008 charpos
= IT_CHARPOS (it
);
5009 bytepos
= IT_BYTEPOS (it
);
5011 /* See if point is on a partially visible line at the end. */
5012 if (it
.what
== IT_EOB
)
5013 partial_p
= it
.current_y
+ it
.ascent
+ it
.descent
> it
.last_visible_y
;
5016 move_it_by_lines (&it
, 1, 1);
5017 partial_p
= it
.current_y
> it
.last_visible_y
;
5020 if (charpos
== PT
&& !partial_p
5021 && (NILP (Vscroll_preserve_screen_position
)
5022 || EQ (Vscroll_preserve_screen_position
, Qt
)))
5023 /* We found PT before we found the display margin, so PT is ok. */
5025 else if (window_scroll_pixel_based_preserve_y
>= 0)
5027 SET_TEXT_POS_FROM_MARKER (start
, w
->start
);
5028 start_display (&it
, w
, start
);
5029 /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT
5030 here because we called start_display again and did not
5031 alter it.current_y this time. */
5032 move_it_to (&it
, -1, -1, window_scroll_pixel_based_preserve_y
, -1,
5034 SET_PT_BOTH (IT_CHARPOS (it
), IT_BYTEPOS (it
));
5039 /* The last line was only partially visible, so back up two
5040 lines to make sure we're on a fully visible line. */
5042 move_it_by_lines (&it
, -2, 0);
5043 SET_PT_BOTH (IT_CHARPOS (it
), IT_BYTEPOS (it
));
5046 /* No, the position we saved is OK, so use it. */
5047 SET_PT_BOTH (charpos
, bytepos
);
5053 /* Implementation of window_scroll that works based on screen lines.
5054 See the comment of window_scroll for parameter descriptions. */
5057 window_scroll_line_based (window
, n
, whole
, noerror
)
5063 register struct window
*w
= XWINDOW (window
);
5064 register int opoint
= PT
, opoint_byte
= PT_BYTE
;
5065 register int pos
, pos_byte
;
5066 register int ht
= window_internal_height (w
);
5067 register Lisp_Object tem
;
5071 struct position posit
;
5074 /* If scrolling screen-fulls, compute the number of lines to
5075 scroll from the window's height. */
5077 n
*= max (1, ht
- next_screen_context_lines
);
5079 startpos
= marker_position (w
->start
);
5081 posit
= *compute_motion (startpos
, 0, 0, 0,
5083 -1, XINT (w
->hscroll
),
5085 original_vpos
= posit
.vpos
;
5087 XSETFASTINT (tem
, PT
);
5088 tem
= Fpos_visible_in_window_p (tem
, window
, Qnil
);
5092 Fvertical_motion (make_number (- (ht
/ 2)), window
);
5097 lose
= n
< 0 && PT
== BEGV
;
5098 Fvertical_motion (make_number (n
), window
);
5102 SET_PT_BOTH (opoint
, opoint_byte
);
5109 Fsignal (Qbeginning_of_buffer
, Qnil
);
5114 int this_scroll_margin
= scroll_margin
;
5116 /* Don't use a scroll margin that is negative or too large. */
5117 if (this_scroll_margin
< 0)
5118 this_scroll_margin
= 0;
5120 if (XINT (w
->total_lines
) < 4 * scroll_margin
)
5121 this_scroll_margin
= XINT (w
->total_lines
) / 4;
5123 set_marker_restricted_both (w
->start
, w
->buffer
, pos
, pos_byte
);
5124 w
->start_at_line_beg
= bolp
;
5125 w
->update_mode_line
= Qt
;
5126 XSETFASTINT (w
->last_modified
, 0);
5127 XSETFASTINT (w
->last_overlay_modified
, 0);
5128 /* Set force_start so that redisplay_window will run
5129 the window-scroll-functions. */
5130 w
->force_start
= Qt
;
5132 if (!NILP (Vscroll_preserve_screen_position
)
5133 && (whole
|| !EQ (Vscroll_preserve_screen_position
, Qt
)))
5135 SET_PT_BOTH (pos
, pos_byte
);
5136 Fvertical_motion (make_number (original_vpos
), window
);
5138 /* If we scrolled forward, put point enough lines down
5139 that it is outside the scroll margin. */
5144 if (this_scroll_margin
> 0)
5146 SET_PT_BOTH (pos
, pos_byte
);
5147 Fvertical_motion (make_number (this_scroll_margin
), window
);
5153 if (top_margin
<= opoint
)
5154 SET_PT_BOTH (opoint
, opoint_byte
);
5155 else if (!NILP (Vscroll_preserve_screen_position
))
5157 SET_PT_BOTH (pos
, pos_byte
);
5158 Fvertical_motion (make_number (original_vpos
), window
);
5161 SET_PT (top_margin
);
5167 /* If we scrolled backward, put point near the end of the window
5168 but not within the scroll margin. */
5169 SET_PT_BOTH (pos
, pos_byte
);
5170 tem
= Fvertical_motion (make_number (ht
- this_scroll_margin
), window
);
5171 if (XFASTINT (tem
) == ht
- this_scroll_margin
)
5174 bottom_margin
= PT
+ 1;
5176 if (bottom_margin
> opoint
)
5177 SET_PT_BOTH (opoint
, opoint_byte
);
5180 if (!NILP (Vscroll_preserve_screen_position
))
5182 SET_PT_BOTH (pos
, pos_byte
);
5183 Fvertical_motion (make_number (original_vpos
), window
);
5186 Fvertical_motion (make_number (-1), window
);
5195 Fsignal (Qend_of_buffer
, Qnil
);
5200 /* Scroll selected_window up or down. If N is nil, scroll a
5201 screen-full which is defined as the height of the window minus
5202 next_screen_context_lines. If N is the symbol `-', scroll.
5203 DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll
5204 up. This is the guts of Fscroll_up and Fscroll_down. */
5207 scroll_command (n
, direction
)
5211 int count
= SPECPDL_INDEX ();
5213 xassert (abs (direction
) == 1);
5215 /* If selected window's buffer isn't current, make it current for
5216 the moment. But don't screw up if window_scroll gets an error. */
5217 if (XBUFFER (XWINDOW (selected_window
)->buffer
) != current_buffer
)
5219 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
5220 Fset_buffer (XWINDOW (selected_window
)->buffer
);
5222 /* Make redisplay consider other windows than just selected_window. */
5223 ++windows_or_buffers_changed
;
5227 window_scroll (selected_window
, direction
, 1, 0);
5228 else if (EQ (n
, Qminus
))
5229 window_scroll (selected_window
, -direction
, 1, 0);
5232 n
= Fprefix_numeric_value (n
);
5233 window_scroll (selected_window
, XINT (n
) * direction
, 0, 0);
5236 unbind_to (count
, Qnil
);
5239 DEFUN ("scroll-up", Fscroll_up
, Sscroll_up
, 0, 1, "P",
5240 doc
: /* Scroll text of current window upward ARG lines.
5241 If ARG is omitted or nil, scroll upward by a near full screen.
5242 A near full screen is `next-screen-context-lines' less than a full screen.
5243 Negative ARG means scroll downward.
5244 If ARG is the atom `-', scroll downward by nearly full screen.
5245 When calling from a program, supply as argument a number, nil, or `-'. */)
5249 scroll_command (arg
, 1);
5253 DEFUN ("scroll-down", Fscroll_down
, Sscroll_down
, 0, 1, "P",
5254 doc
: /* Scroll text of current window down ARG lines.
5255 If ARG is omitted or nil, scroll down 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 upward.
5258 If ARG is the atom `-', scroll upward by nearly full screen.
5259 When calling from a program, supply as argument a number, nil, or `-'. */)
5263 scroll_command (arg
, -1);
5267 DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling
, Sother_window_for_scrolling
, 0, 0, 0,
5268 doc
: /* Return the other window for \"other window scroll\" commands.
5269 If `other-window-scroll-buffer' is non-nil, a window
5270 showing that buffer is used.
5271 If in the minibuffer, `minibuffer-scroll-window' if non-nil
5272 specifies the window. This takes precedence over
5273 `other-window-scroll-buffer'. */)
5278 if (MINI_WINDOW_P (XWINDOW (selected_window
))
5279 && !NILP (Vminibuf_scroll_window
))
5280 window
= Vminibuf_scroll_window
;
5281 /* If buffer is specified, scroll that buffer. */
5282 else if (!NILP (Vother_window_scroll_buffer
))
5284 window
= Fget_buffer_window (Vother_window_scroll_buffer
, Qnil
);
5286 window
= Fdisplay_buffer (Vother_window_scroll_buffer
, Qt
, Qnil
);
5290 /* Nothing specified; look for a neighboring window on the same
5292 window
= Fnext_window (selected_window
, Qnil
, Qnil
);
5294 if (EQ (window
, selected_window
))
5295 /* That didn't get us anywhere; look for a window on another
5298 window
= Fnext_window (window
, Qnil
, Qt
);
5299 while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window
))))
5300 && ! EQ (window
, selected_window
));
5303 CHECK_LIVE_WINDOW (window
);
5305 if (EQ (window
, selected_window
))
5306 error ("There is no other window");
5311 DEFUN ("scroll-other-window", Fscroll_other_window
, Sscroll_other_window
, 0, 1, "P",
5312 doc
: /* Scroll next window upward ARG lines; or near full screen if no ARG.
5313 A near full screen is `next-screen-context-lines' less than a full screen.
5314 The next window is the one below the current one; or the one at the top
5315 if the current one is at the bottom. Negative ARG means scroll downward.
5316 If ARG is the atom `-', scroll downward by nearly full screen.
5317 When calling from a program, supply as argument a number, nil, or `-'.
5319 If `other-window-scroll-buffer' is non-nil, scroll the window
5320 showing that buffer, popping the buffer up if necessary.
5321 If in the minibuffer, `minibuffer-scroll-window' if non-nil
5322 specifies the window to scroll. This takes precedence over
5323 `other-window-scroll-buffer'. */)
5329 int count
= SPECPDL_INDEX ();
5331 window
= Fother_window_for_scrolling ();
5332 w
= XWINDOW (window
);
5334 /* Don't screw up if window_scroll gets an error. */
5335 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
5336 ++windows_or_buffers_changed
;
5338 Fset_buffer (w
->buffer
);
5339 SET_PT (marker_position (w
->pointm
));
5342 window_scroll (window
, 1, 1, 1);
5343 else if (EQ (arg
, Qminus
))
5344 window_scroll (window
, -1, 1, 1);
5350 window_scroll (window
, XINT (arg
), 0, 1);
5353 set_marker_both (w
->pointm
, Qnil
, PT
, PT_BYTE
);
5354 unbind_to (count
, Qnil
);
5359 DEFUN ("scroll-left", Fscroll_left
, Sscroll_left
, 0, 2, "P\np",
5360 doc
: /* Scroll selected window display ARG columns left.
5361 Default for ARG is window width minus 2.
5362 Value is the total amount of leftward horizontal scrolling in
5363 effect after the change.
5364 If SET_MINIMUM is non-nil, the new scroll amount becomes the
5365 lower bound for automatic scrolling, i.e. automatic scrolling
5366 will not scroll a window to a column less than the value returned
5367 by this function. This happens in an interactive call. */)
5369 register Lisp_Object arg
, set_minimum
;
5373 struct window
*w
= XWINDOW (selected_window
);
5376 XSETFASTINT (arg
, window_box_text_cols (w
) - 2);
5378 arg
= Fprefix_numeric_value (arg
);
5380 hscroll
= XINT (w
->hscroll
) + XINT (arg
);
5381 result
= Fset_window_hscroll (selected_window
, make_number (hscroll
));
5383 if (!NILP (set_minimum
))
5384 w
->min_hscroll
= w
->hscroll
;
5389 DEFUN ("scroll-right", Fscroll_right
, Sscroll_right
, 0, 2, "P\np",
5390 doc
: /* Scroll selected window display ARG columns right.
5391 Default for ARG is window width minus 2.
5392 Value is the total amount of leftward horizontal scrolling in
5393 effect after the change.
5394 If SET_MINIMUM is non-nil, the new scroll amount becomes the
5395 lower bound for automatic scrolling, i.e. automatic scrolling
5396 will not scroll a window to a column less than the value returned
5397 by this function. This happens in an interactive call. */)
5399 register Lisp_Object arg
, set_minimum
;
5403 struct window
*w
= XWINDOW (selected_window
);
5406 XSETFASTINT (arg
, window_box_text_cols (w
) - 2);
5408 arg
= Fprefix_numeric_value (arg
);
5410 hscroll
= XINT (w
->hscroll
) - XINT (arg
);
5411 result
= Fset_window_hscroll (selected_window
, make_number (hscroll
));
5413 if (!NILP (set_minimum
))
5414 w
->min_hscroll
= w
->hscroll
;
5419 DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window
, Sminibuffer_selected_window
, 0, 0, 0,
5420 doc
: /* Return the window which was selected when entering the minibuffer.
5421 Returns nil, if current window is not a minibuffer window. */)
5424 if (minibuf_level
> 0
5425 && MINI_WINDOW_P (XWINDOW (selected_window
))
5426 && WINDOW_LIVE_P (minibuf_selected_window
))
5427 return minibuf_selected_window
;
5432 /* Value is the number of lines actually displayed in window W,
5433 as opposed to its height. */
5436 displayed_window_lines (w
)
5440 struct text_pos start
;
5441 int height
= window_box_height (w
);
5442 struct buffer
*old_buffer
;
5445 if (XBUFFER (w
->buffer
) != current_buffer
)
5447 old_buffer
= current_buffer
;
5448 set_buffer_internal (XBUFFER (w
->buffer
));
5453 /* In case W->start is out of the accessible range, do something
5454 reasonable. This happens in Info mode when Info-scroll-down
5455 calls (recenter -1) while W->start is 1. */
5456 if (XMARKER (w
->start
)->charpos
< BEGV
)
5457 SET_TEXT_POS (start
, BEGV
, BEGV_BYTE
);
5458 else if (XMARKER (w
->start
)->charpos
> ZV
)
5459 SET_TEXT_POS (start
, ZV
, ZV_BYTE
);
5461 SET_TEXT_POS_FROM_MARKER (start
, w
->start
);
5463 start_display (&it
, w
, start
);
5464 move_it_vertically (&it
, height
);
5465 bottom_y
= line_bottom_y (&it
);
5467 /* rms: On a non-window display,
5468 the value of it.vpos at the bottom of the screen
5469 seems to be 1 larger than window_box_height (w).
5470 This kludge fixes a bug whereby (move-to-window-line -1)
5471 when ZV is on the last screen line
5472 moves to the previous screen line instead of the last one. */
5473 if (! FRAME_WINDOW_P (XFRAME (w
->frame
)))
5476 /* Add in empty lines at the bottom of the window. */
5477 if (bottom_y
< height
)
5479 int uy
= FRAME_LINE_HEIGHT (it
.f
);
5480 it
.vpos
+= (height
- bottom_y
+ uy
- 1) / uy
;
5484 set_buffer_internal (old_buffer
);
5490 DEFUN ("recenter", Frecenter
, Srecenter
, 0, 1, "P",
5491 doc
: /* Center point in window and redisplay frame.
5492 With prefix argument ARG, recenter putting point on screen line ARG
5493 relative to the current window. If ARG is negative, it counts up from the
5494 bottom of the window. (ARG should be less than the height of the window.)
5496 If ARG is omitted or nil, erase the entire frame and then
5497 redraw with point in the center of the current window.
5498 Just C-u as prefix means put point in the center of the window
5499 and redisplay normally--don't erase and redraw the frame. */)
5501 register Lisp_Object arg
;
5503 struct window
*w
= XWINDOW (selected_window
);
5504 struct buffer
*buf
= XBUFFER (w
->buffer
);
5505 struct buffer
*obuf
= current_buffer
;
5507 int charpos
, bytepos
;
5509 int this_scroll_margin
;
5511 /* If redisplay is suppressed due to an error, try again. */
5512 obuf
->display_error_modiff
= 0;
5518 /* Invalidate pixel data calculated for all compositions. */
5519 for (i
= 0; i
< n_compositions
; i
++)
5520 composition_table
[i
]->font
= NULL
;
5522 Fredraw_frame (w
->frame
);
5523 SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w
)));
5526 else if (CONSP (arg
)) /* Just C-u. */
5530 arg
= Fprefix_numeric_value (arg
);
5535 set_buffer_internal (buf
);
5537 /* Do this after making BUF current
5538 in case scroll_margin is buffer-local. */
5539 this_scroll_margin
= max (0, scroll_margin
);
5540 this_scroll_margin
= min (this_scroll_margin
,
5541 XFASTINT (w
->total_lines
) / 4);
5543 /* Handle centering on a graphical frame specially. Such frames can
5544 have variable-height lines and centering point on the basis of
5545 line counts would lead to strange effects. */
5546 if (FRAME_WINDOW_P (XFRAME (w
->frame
)))
5553 SET_TEXT_POS (pt
, PT
, PT_BYTE
);
5554 start_display (&it
, w
, pt
);
5555 move_it_vertically_backward (&it
, window_box_height (w
) / 2);
5556 charpos
= IT_CHARPOS (it
);
5557 bytepos
= IT_BYTEPOS (it
);
5564 int extra_line_spacing
;
5565 int h
= window_box_height (w
);
5567 iarg
= - max (-iarg
, this_scroll_margin
);
5569 SET_TEXT_POS (pt
, PT
, PT_BYTE
);
5570 start_display (&it
, w
, pt
);
5572 /* Be sure we have the exact height of the full line containing PT. */
5573 move_it_by_lines (&it
, 0, 1);
5575 /* The amount of pixels we have to move back is the window
5576 height minus what's displayed in the line containing PT,
5577 and the lines below. */
5580 move_it_by_lines (&it
, nlines
, 1);
5582 if (it
.vpos
== nlines
)
5586 /* Last line has no newline */
5587 h
-= line_bottom_y (&it
);
5591 /* Don't reserve space for extra line spacing of last line. */
5592 extra_line_spacing
= it
.max_extra_line_spacing
;
5594 /* If we can't move down NLINES lines because we hit
5595 the end of the buffer, count in some empty lines. */
5596 if (it
.vpos
< nlines
)
5599 extra_line_spacing
= it
.extra_line_spacing
;
5600 h
-= nlines
* (FRAME_LINE_HEIGHT (it
.f
) + extra_line_spacing
);
5605 /* Now find the new top line (starting position) of the window. */
5606 start_display (&it
, w
, pt
);
5608 move_it_vertically_backward (&it
, h
);
5610 /* If extra line spacing is present, we may move too far
5611 back. This causes the last line to be only partially
5612 visible (which triggers redisplay to recenter that line
5613 in the middle), so move forward.
5614 But ignore extra line spacing on last line, as it is not
5615 considered to be part of the visible height of the line.
5617 h
+= extra_line_spacing
;
5618 while (-it
.current_y
> h
)
5619 move_it_by_lines (&it
, 1, 1);
5621 charpos
= IT_CHARPOS (it
);
5622 bytepos
= IT_BYTEPOS (it
);
5626 struct position pos
;
5628 iarg
= max (iarg
, this_scroll_margin
);
5630 pos
= *vmotion (PT
, -iarg
, w
);
5631 charpos
= pos
.bufpos
;
5632 bytepos
= pos
.bytepos
;
5637 struct position pos
;
5638 int ht
= window_internal_height (w
);
5645 /* Don't let it get into the margin at either top or bottom. */
5646 iarg
= max (iarg
, this_scroll_margin
);
5647 iarg
= min (iarg
, ht
- this_scroll_margin
- 1);
5649 pos
= *vmotion (PT
, - iarg
, w
);
5650 charpos
= pos
.bufpos
;
5651 bytepos
= pos
.bytepos
;
5654 /* Set the new window start. */
5655 set_marker_both (w
->start
, w
->buffer
, charpos
, bytepos
);
5656 w
->window_end_valid
= Qnil
;
5658 w
->optional_new_start
= Qt
;
5660 if (bytepos
== BEGV_BYTE
|| FETCH_BYTE (bytepos
- 1) == '\n')
5661 w
->start_at_line_beg
= Qt
;
5663 w
->start_at_line_beg
= Qnil
;
5665 set_buffer_internal (obuf
);
5670 DEFUN ("window-text-height", Fwindow_text_height
, Swindow_text_height
,
5672 doc
: /* Return the height in lines of the text display area of WINDOW.
5673 This doesn't include the mode-line (or header-line if any) or any
5674 partial-height lines in the text display area. */)
5678 struct window
*w
= decode_window (window
);
5679 int pixel_height
= window_box_height (w
);
5680 int line_height
= pixel_height
/ FRAME_LINE_HEIGHT (XFRAME (w
->frame
));
5681 return make_number (line_height
);
5686 DEFUN ("move-to-window-line", Fmove_to_window_line
, Smove_to_window_line
,
5688 doc
: /* Position point relative to window.
5689 With no argument, position point at center of window.
5690 An argument specifies vertical position within the window;
5691 zero means top of window, negative means relative to bottom of window. */)
5695 struct window
*w
= XWINDOW (selected_window
);
5699 int this_scroll_margin
;
5702 window
= selected_window
;
5703 start
= marker_position (w
->start
);
5704 if (start
< BEGV
|| start
> ZV
)
5706 int height
= window_internal_height (w
);
5707 Fvertical_motion (make_number (- (height
/ 2)), window
);
5708 set_marker_both (w
->start
, w
->buffer
, PT
, PT_BYTE
);
5709 w
->start_at_line_beg
= Fbolp ();
5710 w
->force_start
= Qt
;
5713 Fgoto_char (w
->start
);
5715 lines
= displayed_window_lines (w
);
5718 this_scroll_margin
= max (0, scroll_margin
);
5719 this_scroll_margin
= min (this_scroll_margin
, lines
/ 4);
5723 XSETFASTINT (arg
, lines
/ 2);
5726 int iarg
= XINT (Fprefix_numeric_value (arg
));
5729 iarg
= iarg
+ lines
;
5731 #if 0 /* This code would prevent move-to-window-line from moving point
5732 to a place inside the scroll margins (which would cause the
5733 next redisplay to scroll). I wrote this code, but then concluded
5734 it is probably better not to install it. However, it is here
5735 inside #if 0 so as not to lose it. -- rms. */
5737 /* Don't let it get into the margin at either top or bottom. */
5738 iarg
= max (iarg
, this_scroll_margin
);
5739 iarg
= min (iarg
, lines
- this_scroll_margin
- 1);
5742 arg
= make_number (iarg
);
5745 /* Skip past a partially visible first line. */
5747 XSETINT (arg
, XINT (arg
) + 1);
5749 return Fvertical_motion (arg
, window
);
5754 /***********************************************************************
5755 Window Configuration
5756 ***********************************************************************/
5758 struct save_window_data
5760 EMACS_INT size_from_Lisp_Vector_struct
;
5761 struct Lisp_Vector
*next_from_Lisp_Vector_struct
;
5762 Lisp_Object frame_cols
, frame_lines
, frame_menu_bar_lines
;
5763 Lisp_Object frame_tool_bar_lines
;
5764 Lisp_Object selected_frame
;
5765 Lisp_Object current_window
;
5766 Lisp_Object current_buffer
;
5767 Lisp_Object minibuf_scroll_window
;
5768 Lisp_Object minibuf_selected_window
;
5769 Lisp_Object root_window
;
5770 Lisp_Object focus_frame
;
5771 /* Record the values of window-min-width and window-min-height
5772 so that window sizes remain consistent with them. */
5773 Lisp_Object min_width
, min_height
;
5774 /* A vector, each of whose elements is a struct saved_window
5776 Lisp_Object saved_windows
;
5779 /* This is saved as a Lisp_Vector */
5782 /* these first two must agree with struct Lisp_Vector in lisp.h */
5783 EMACS_INT size_from_Lisp_Vector_struct
;
5784 struct Lisp_Vector
*next_from_Lisp_Vector_struct
;
5787 Lisp_Object buffer
, start
, pointm
, mark
;
5788 Lisp_Object left_col
, top_line
, total_cols
, total_lines
;
5789 Lisp_Object hscroll
, min_hscroll
;
5790 Lisp_Object parent
, prev
;
5791 Lisp_Object start_at_line_beg
;
5792 Lisp_Object display_table
;
5793 Lisp_Object orig_top_line
, orig_total_lines
;
5794 Lisp_Object left_margin_cols
, right_margin_cols
;
5795 Lisp_Object left_fringe_width
, right_fringe_width
, fringes_outside_margins
;
5796 Lisp_Object scroll_bar_width
, vertical_scroll_bar_type
;
5799 #define SAVED_WINDOW_N(swv,n) \
5800 ((struct saved_window *) (XVECTOR ((swv)->contents[(n)])))
5802 DEFUN ("window-configuration-p", Fwindow_configuration_p
, Swindow_configuration_p
, 1, 1, 0,
5803 doc
: /* Return t if OBJECT is a window-configuration object. */)
5807 if (WINDOW_CONFIGURATIONP (object
))
5812 DEFUN ("window-configuration-frame", Fwindow_configuration_frame
, Swindow_configuration_frame
, 1, 1, 0,
5813 doc
: /* Return the frame that CONFIG, a window-configuration object, is about. */)
5817 register struct save_window_data
*data
;
5818 struct Lisp_Vector
*saved_windows
;
5820 if (! WINDOW_CONFIGURATIONP (config
))
5821 wrong_type_argument (Qwindow_configuration_p
, config
);
5823 data
= (struct save_window_data
*) XVECTOR (config
);
5824 saved_windows
= XVECTOR (data
->saved_windows
);
5825 return XWINDOW (SAVED_WINDOW_N (saved_windows
, 0)->window
)->frame
;
5828 DEFUN ("set-window-configuration", Fset_window_configuration
,
5829 Sset_window_configuration
, 1, 1, 0,
5830 doc
: /* Set the configuration of windows and buffers as specified by CONFIGURATION.
5831 CONFIGURATION must be a value previously returned
5832 by `current-window-configuration' (which see).
5833 If CONFIGURATION was made from a frame that is now deleted,
5834 only frame-independent values can be restored. In this case,
5835 the return value is nil. Otherwise the value is t. */)
5837 Lisp_Object configuration
;
5839 register struct save_window_data
*data
;
5840 struct Lisp_Vector
*saved_windows
;
5841 Lisp_Object new_current_buffer
;
5846 while (!WINDOW_CONFIGURATIONP (configuration
))
5847 wrong_type_argument (Qwindow_configuration_p
, configuration
);
5849 data
= (struct save_window_data
*) XVECTOR (configuration
);
5850 saved_windows
= XVECTOR (data
->saved_windows
);
5852 new_current_buffer
= data
->current_buffer
;
5853 if (NILP (XBUFFER (new_current_buffer
)->name
))
5854 new_current_buffer
= Qnil
;
5857 if (XBUFFER (new_current_buffer
) == current_buffer
)
5858 /* The code further down "preserves point" by saving here PT in
5859 old_point and then setting it later back into PT. When the
5860 current-selected-window and the final-selected-window both show
5861 the current buffer, this suffers from the problem that the
5862 current PT is the window-point of the current-selected-window,
5863 while the final PT is the point of the final-selected-window, so
5864 this copy from one PT to the other would end up moving the
5865 window-point of the final-selected-window to the window-point of
5866 the current-selected-window. So we have to be careful which
5867 point of the current-buffer we copy into old_point. */
5868 if (EQ (XWINDOW (data
->current_window
)->buffer
, new_current_buffer
)
5869 && WINDOWP (selected_window
)
5870 && EQ (XWINDOW (selected_window
)->buffer
, new_current_buffer
)
5871 && !EQ (selected_window
, data
->current_window
))
5872 old_point
= XMARKER (XWINDOW (data
->current_window
)->pointm
)->charpos
;
5876 /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of
5877 point in new_current_buffer as of the last time this buffer was
5878 used. This can be non-deterministic since it can be changed by
5879 things like jit-lock by mere temporary selection of some random
5880 window that happens to show this buffer.
5881 So if possible we want this arbitrary choice of "which point" to
5882 be the one from the to-be-selected-window so as to prevent this
5883 window's cursor from being copied from another window. */
5884 if (EQ (XWINDOW (data
->current_window
)->buffer
, new_current_buffer
)
5885 /* If current_window = selected_window, its point is in BUF_PT. */
5886 && !EQ (selected_window
, data
->current_window
))
5887 old_point
= XMARKER (XWINDOW (data
->current_window
)->pointm
)->charpos
;
5889 old_point
= BUF_PT (XBUFFER (new_current_buffer
));
5892 frame
= XWINDOW (SAVED_WINDOW_N (saved_windows
, 0)->window
)->frame
;
5895 /* If f is a dead frame, don't bother rebuilding its window tree.
5896 However, there is other stuff we should still try to do below. */
5897 if (FRAME_LIVE_P (f
))
5899 register struct window
*w
;
5900 register struct saved_window
*p
;
5901 struct window
*root_window
;
5902 struct window
**leaf_windows
;
5906 /* If the frame has been resized since this window configuration was
5907 made, we change the frame to the size specified in the
5908 configuration, restore the configuration, and then resize it
5909 back. We keep track of the prevailing height in these variables. */
5910 int previous_frame_lines
= FRAME_LINES (f
);
5911 int previous_frame_cols
= FRAME_COLS (f
);
5912 int previous_frame_menu_bar_lines
= FRAME_MENU_BAR_LINES (f
);
5913 int previous_frame_tool_bar_lines
= FRAME_TOOL_BAR_LINES (f
);
5915 /* The mouse highlighting code could get screwed up
5916 if it runs during this. */
5919 if (XFASTINT (data
->frame_lines
) != previous_frame_lines
5920 || XFASTINT (data
->frame_cols
) != previous_frame_cols
)
5921 change_frame_size (f
, XFASTINT (data
->frame_lines
),
5922 XFASTINT (data
->frame_cols
), 0, 0, 0);
5923 #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS)
5924 if (XFASTINT (data
->frame_menu_bar_lines
)
5925 != previous_frame_menu_bar_lines
)
5926 x_set_menu_bar_lines (f
, data
->frame_menu_bar_lines
, make_number (0));
5927 #ifdef HAVE_WINDOW_SYSTEM
5928 if (XFASTINT (data
->frame_tool_bar_lines
)
5929 != previous_frame_tool_bar_lines
)
5930 x_set_tool_bar_lines (f
, data
->frame_tool_bar_lines
, make_number (0));
5934 /* "Swap out" point from the selected window's buffer
5935 into the window itself. (Normally the pointm of the selected
5936 window holds garbage.) We do this now, before
5937 restoring the window contents, and prevent it from
5938 being done later on when we select a new window. */
5939 if (! NILP (XWINDOW (selected_window
)->buffer
))
5941 w
= XWINDOW (selected_window
);
5942 set_marker_both (w
->pointm
,
5944 BUF_PT (XBUFFER (w
->buffer
)),
5945 BUF_PT_BYTE (XBUFFER (w
->buffer
)));
5948 windows_or_buffers_changed
++;
5949 FRAME_WINDOW_SIZES_CHANGED (f
) = 1;
5951 /* Problem: Freeing all matrices and later allocating them again
5952 is a serious redisplay flickering problem. What we would
5953 really like to do is to free only those matrices not reused
5955 root_window
= XWINDOW (FRAME_ROOT_WINDOW (f
));
5957 = (struct window
**) alloca (count_windows (root_window
)
5958 * sizeof (struct window
*));
5959 n_leaf_windows
= get_leaf_windows (root_window
, leaf_windows
, 0);
5961 /* Temporarily avoid any problems with windows that are smaller
5962 than they are supposed to be. */
5963 window_min_height
= 1;
5964 window_min_width
= 1;
5967 Mark all windows now on frame as "deleted".
5968 Restoring the new configuration "undeletes" any that are in it.
5970 Save their current buffers in their height fields, since we may
5971 need it later, if a buffer saved in the configuration is now
5973 delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f
)));
5975 for (k
= 0; k
< saved_windows
->size
; k
++)
5977 p
= SAVED_WINDOW_N (saved_windows
, k
);
5978 w
= XWINDOW (p
->window
);
5981 if (!NILP (p
->parent
))
5982 w
->parent
= SAVED_WINDOW_N (saved_windows
,
5983 XFASTINT (p
->parent
))->window
;
5987 if (!NILP (p
->prev
))
5989 w
->prev
= SAVED_WINDOW_N (saved_windows
,
5990 XFASTINT (p
->prev
))->window
;
5991 XWINDOW (w
->prev
)->next
= p
->window
;
5996 if (!NILP (w
->parent
))
5998 if (EQ (p
->total_cols
, XWINDOW (w
->parent
)->total_cols
))
6000 XWINDOW (w
->parent
)->vchild
= p
->window
;
6001 XWINDOW (w
->parent
)->hchild
= Qnil
;
6005 XWINDOW (w
->parent
)->hchild
= p
->window
;
6006 XWINDOW (w
->parent
)->vchild
= Qnil
;
6011 /* If we squirreled away the buffer in the window's height,
6013 if (BUFFERP (w
->total_lines
))
6014 w
->buffer
= w
->total_lines
;
6015 w
->left_col
= p
->left_col
;
6016 w
->top_line
= p
->top_line
;
6017 w
->total_cols
= p
->total_cols
;
6018 w
->total_lines
= p
->total_lines
;
6019 w
->hscroll
= p
->hscroll
;
6020 w
->min_hscroll
= p
->min_hscroll
;
6021 w
->display_table
= p
->display_table
;
6022 w
->orig_top_line
= p
->orig_top_line
;
6023 w
->orig_total_lines
= p
->orig_total_lines
;
6024 w
->left_margin_cols
= p
->left_margin_cols
;
6025 w
->right_margin_cols
= p
->right_margin_cols
;
6026 w
->left_fringe_width
= p
->left_fringe_width
;
6027 w
->right_fringe_width
= p
->right_fringe_width
;
6028 w
->fringes_outside_margins
= p
->fringes_outside_margins
;
6029 w
->scroll_bar_width
= p
->scroll_bar_width
;
6030 w
->vertical_scroll_bar_type
= p
->vertical_scroll_bar_type
;
6031 XSETFASTINT (w
->last_modified
, 0);
6032 XSETFASTINT (w
->last_overlay_modified
, 0);
6034 /* Reinstall the saved buffer and pointers into it. */
6035 if (NILP (p
->buffer
))
6036 w
->buffer
= p
->buffer
;
6039 if (!NILP (XBUFFER (p
->buffer
)->name
))
6040 /* If saved buffer is alive, install it. */
6042 w
->buffer
= p
->buffer
;
6043 w
->start_at_line_beg
= p
->start_at_line_beg
;
6044 set_marker_restricted (w
->start
, p
->start
, w
->buffer
);
6045 set_marker_restricted (w
->pointm
, p
->pointm
, w
->buffer
);
6046 Fset_marker (XBUFFER (w
->buffer
)->mark
,
6047 p
->mark
, w
->buffer
);
6049 /* As documented in Fcurrent_window_configuration, don't
6050 restore the location of point in the buffer which was
6051 current when the window configuration was recorded. */
6052 if (!EQ (p
->buffer
, new_current_buffer
)
6053 && XBUFFER (p
->buffer
) == current_buffer
)
6054 Fgoto_char (w
->pointm
);
6056 else if (NILP (w
->buffer
) || NILP (XBUFFER (w
->buffer
)->name
))
6057 /* Else unless window has a live buffer, get one. */
6059 w
->buffer
= Fcdr (Fcar (Vbuffer_alist
));
6060 /* This will set the markers to beginning of visible
6062 set_marker_restricted (w
->start
, make_number (0), w
->buffer
);
6063 set_marker_restricted (w
->pointm
, make_number (0),w
->buffer
);
6064 w
->start_at_line_beg
= Qt
;
6067 /* Keeping window's old buffer; make sure the markers
6070 /* Set window markers at start of visible range. */
6071 if (XMARKER (w
->start
)->buffer
== 0)
6072 set_marker_restricted (w
->start
, make_number (0),
6074 if (XMARKER (w
->pointm
)->buffer
== 0)
6075 set_marker_restricted_both (w
->pointm
, w
->buffer
,
6076 BUF_PT (XBUFFER (w
->buffer
)),
6077 BUF_PT_BYTE (XBUFFER (w
->buffer
)));
6078 w
->start_at_line_beg
= Qt
;
6083 FRAME_ROOT_WINDOW (f
) = data
->root_window
;
6084 /* Prevent "swapping out point" in the old selected window
6085 using the buffer that has been restored into it.
6086 We already swapped out point that from that window's old buffer. */
6087 selected_window
= Qnil
;
6089 /* Arrange *not* to restore point in the buffer that was
6090 current when the window configuration was saved. */
6091 if (EQ (XWINDOW (data
->current_window
)->buffer
, new_current_buffer
))
6092 set_marker_restricted (XWINDOW (data
->current_window
)->pointm
,
6093 make_number (old_point
),
6094 XWINDOW (data
->current_window
)->buffer
);
6096 Fselect_window (data
->current_window
, Qnil
);
6097 XBUFFER (XWINDOW (selected_window
)->buffer
)->last_selected_window
6100 if (NILP (data
->focus_frame
)
6101 || (FRAMEP (data
->focus_frame
)
6102 && FRAME_LIVE_P (XFRAME (data
->focus_frame
))))
6103 Fredirect_frame_focus (frame
, data
->focus_frame
);
6105 #if 0 /* I don't understand why this is needed, and it causes problems
6106 when the frame's old selected window has been deleted. */
6107 if (f
!= selected_frame
&& FRAME_WINDOW_P (f
))
6108 do_switch_frame (WINDOW_FRAME (XWINDOW (data
->root_window
)),
6112 /* Set the screen height to the value it had before this function. */
6113 if (previous_frame_lines
!= FRAME_LINES (f
)
6114 || previous_frame_cols
!= FRAME_COLS (f
))
6115 change_frame_size (f
, previous_frame_lines
, previous_frame_cols
,
6117 #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS)
6118 if (previous_frame_menu_bar_lines
!= FRAME_MENU_BAR_LINES (f
))
6119 x_set_menu_bar_lines (f
, make_number (previous_frame_menu_bar_lines
),
6121 #ifdef HAVE_WINDOW_SYSTEM
6122 if (previous_frame_tool_bar_lines
!= FRAME_TOOL_BAR_LINES (f
))
6123 x_set_tool_bar_lines (f
, make_number (previous_frame_tool_bar_lines
),
6128 /* Now, free glyph matrices in windows that were not reused. */
6129 for (i
= n
= 0; i
< n_leaf_windows
; ++i
)
6131 if (NILP (leaf_windows
[i
]->buffer
))
6133 /* Assert it's not reused as a combination. */
6134 xassert (NILP (leaf_windows
[i
]->hchild
)
6135 && NILP (leaf_windows
[i
]->vchild
));
6136 free_window_matrices (leaf_windows
[i
]);
6138 else if (EQ (leaf_windows
[i
]->buffer
, new_current_buffer
))
6146 /* Fselect_window will have made f the selected frame, so we
6147 reselect the proper frame here. Fhandle_switch_frame will change the
6148 selected window too, but that doesn't make the call to
6149 Fselect_window above totally superfluous; it still sets f's
6151 if (FRAME_LIVE_P (XFRAME (data
->selected_frame
)))
6152 do_switch_frame (data
->selected_frame
, 0, 0);
6154 if (! NILP (Vwindow_configuration_change_hook
)
6155 && ! NILP (Vrun_hooks
))
6156 call1 (Vrun_hooks
, Qwindow_configuration_change_hook
);
6159 if (!NILP (new_current_buffer
))
6160 Fset_buffer (new_current_buffer
);
6162 /* Restore the minimum heights recorded in the configuration. */
6163 window_min_height
= XINT (data
->min_height
);
6164 window_min_width
= XINT (data
->min_width
);
6166 Vminibuf_scroll_window
= data
->minibuf_scroll_window
;
6167 minibuf_selected_window
= data
->minibuf_selected_window
;
6169 return (FRAME_LIVE_P (f
) ? Qt
: Qnil
);
6172 /* Mark all windows now on frame as deleted
6173 by setting their buffers to nil. */
6176 delete_all_subwindows (w
)
6177 register struct window
*w
;
6179 if (!NILP (w
->next
))
6180 delete_all_subwindows (XWINDOW (w
->next
));
6181 if (!NILP (w
->vchild
))
6182 delete_all_subwindows (XWINDOW (w
->vchild
));
6183 if (!NILP (w
->hchild
))
6184 delete_all_subwindows (XWINDOW (w
->hchild
));
6186 w
->total_lines
= w
->buffer
; /* See Fset_window_configuration for excuse. */
6188 if (!NILP (w
->buffer
))
6191 /* We set all three of these fields to nil, to make sure that we can
6192 distinguish this dead window from any live window. Live leaf
6193 windows will have buffer set, and combination windows will have
6194 vchild or hchild set. */
6199 Vwindow_list
= Qnil
;
6203 count_windows (window
)
6204 register struct window
*window
;
6206 register int count
= 1;
6207 if (!NILP (window
->next
))
6208 count
+= count_windows (XWINDOW (window
->next
));
6209 if (!NILP (window
->vchild
))
6210 count
+= count_windows (XWINDOW (window
->vchild
));
6211 if (!NILP (window
->hchild
))
6212 count
+= count_windows (XWINDOW (window
->hchild
));
6217 /* Fill vector FLAT with leaf windows under W, starting at index I.
6218 Value is last index + 1. */
6221 get_leaf_windows (w
, flat
, i
)
6223 struct window
**flat
;
6228 if (!NILP (w
->hchild
))
6229 i
= get_leaf_windows (XWINDOW (w
->hchild
), flat
, i
);
6230 else if (!NILP (w
->vchild
))
6231 i
= get_leaf_windows (XWINDOW (w
->vchild
), flat
, i
);
6235 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
6242 /* Return a pointer to the glyph W's physical cursor is on. Value is
6243 null if W's current matrix is invalid, so that no meaningfull glyph
6247 get_phys_cursor_glyph (w
)
6250 struct glyph_row
*row
;
6251 struct glyph
*glyph
;
6253 if (w
->phys_cursor
.vpos
>= 0
6254 && w
->phys_cursor
.vpos
< w
->current_matrix
->nrows
6255 && (row
= MATRIX_ROW (w
->current_matrix
, w
->phys_cursor
.vpos
),
6257 && row
->used
[TEXT_AREA
] > w
->phys_cursor
.hpos
)
6258 glyph
= row
->glyphs
[TEXT_AREA
] + w
->phys_cursor
.hpos
;
6267 save_window_save (window
, vector
, i
)
6269 struct Lisp_Vector
*vector
;
6272 register struct saved_window
*p
;
6273 register struct window
*w
;
6274 register Lisp_Object tem
;
6276 for (;!NILP (window
); window
= w
->next
)
6278 p
= SAVED_WINDOW_N (vector
, i
);
6279 w
= XWINDOW (window
);
6281 XSETFASTINT (w
->temslot
, i
); i
++;
6283 p
->buffer
= w
->buffer
;
6284 p
->left_col
= w
->left_col
;
6285 p
->top_line
= w
->top_line
;
6286 p
->total_cols
= w
->total_cols
;
6287 p
->total_lines
= w
->total_lines
;
6288 p
->hscroll
= w
->hscroll
;
6289 p
->min_hscroll
= w
->min_hscroll
;
6290 p
->display_table
= w
->display_table
;
6291 p
->orig_top_line
= w
->orig_top_line
;
6292 p
->orig_total_lines
= w
->orig_total_lines
;
6293 p
->left_margin_cols
= w
->left_margin_cols
;
6294 p
->right_margin_cols
= w
->right_margin_cols
;
6295 p
->left_fringe_width
= w
->left_fringe_width
;
6296 p
->right_fringe_width
= w
->right_fringe_width
;
6297 p
->fringes_outside_margins
= w
->fringes_outside_margins
;
6298 p
->scroll_bar_width
= w
->scroll_bar_width
;
6299 p
->vertical_scroll_bar_type
= w
->vertical_scroll_bar_type
;
6300 if (!NILP (w
->buffer
))
6302 /* Save w's value of point in the window configuration.
6303 If w is the selected window, then get the value of point
6304 from the buffer; pointm is garbage in the selected window. */
6305 if (EQ (window
, selected_window
))
6307 p
->pointm
= Fmake_marker ();
6308 set_marker_both (p
->pointm
, w
->buffer
,
6309 BUF_PT (XBUFFER (w
->buffer
)),
6310 BUF_PT_BYTE (XBUFFER (w
->buffer
)));
6313 p
->pointm
= Fcopy_marker (w
->pointm
, Qnil
);
6315 p
->start
= Fcopy_marker (w
->start
, Qnil
);
6316 p
->start_at_line_beg
= w
->start_at_line_beg
;
6318 tem
= XBUFFER (w
->buffer
)->mark
;
6319 p
->mark
= Fcopy_marker (tem
, Qnil
);
6326 p
->start_at_line_beg
= Qnil
;
6329 if (NILP (w
->parent
))
6332 p
->parent
= XWINDOW (w
->parent
)->temslot
;
6337 p
->prev
= XWINDOW (w
->prev
)->temslot
;
6339 if (!NILP (w
->vchild
))
6340 i
= save_window_save (w
->vchild
, vector
, i
);
6341 if (!NILP (w
->hchild
))
6342 i
= save_window_save (w
->hchild
, vector
, i
);
6348 DEFUN ("current-window-configuration", Fcurrent_window_configuration
,
6349 Scurrent_window_configuration
, 0, 1, 0,
6350 doc
: /* Return an object representing the current window configuration of FRAME.
6351 If FRAME is nil or omitted, use the selected frame.
6352 This describes the number of windows, their sizes and current buffers,
6353 and for each displayed buffer, where display starts, and the positions of
6354 point and mark. An exception is made for point in the current buffer:
6355 its value is -not- saved.
6356 This also records the currently selected frame, and FRAME's focus
6357 redirection (see `redirect-frame-focus'). */)
6361 register Lisp_Object tem
;
6362 register int n_windows
;
6363 register struct save_window_data
*data
;
6364 register struct Lisp_Vector
*vec
;
6369 frame
= selected_frame
;
6370 CHECK_LIVE_FRAME (frame
);
6373 n_windows
= count_windows (XWINDOW (FRAME_ROOT_WINDOW (f
)));
6374 vec
= allocate_other_vector (VECSIZE (struct save_window_data
));
6375 data
= (struct save_window_data
*)vec
;
6377 XSETFASTINT (data
->frame_cols
, FRAME_COLS (f
));
6378 XSETFASTINT (data
->frame_lines
, FRAME_LINES (f
));
6379 XSETFASTINT (data
->frame_menu_bar_lines
, FRAME_MENU_BAR_LINES (f
));
6380 XSETFASTINT (data
->frame_tool_bar_lines
, FRAME_TOOL_BAR_LINES (f
));
6381 data
->selected_frame
= selected_frame
;
6382 data
->current_window
= FRAME_SELECTED_WINDOW (f
);
6383 XSETBUFFER (data
->current_buffer
, current_buffer
);
6384 data
->minibuf_scroll_window
= minibuf_level
> 0 ? Vminibuf_scroll_window
: Qnil
;
6385 data
->minibuf_selected_window
= minibuf_level
> 0 ? minibuf_selected_window
: Qnil
;
6386 data
->root_window
= FRAME_ROOT_WINDOW (f
);
6387 data
->focus_frame
= FRAME_FOCUS_FRAME (f
);
6388 XSETINT (data
->min_height
, window_min_height
);
6389 XSETINT (data
->min_width
, window_min_width
);
6390 tem
= Fmake_vector (make_number (n_windows
), Qnil
);
6391 data
->saved_windows
= tem
;
6392 for (i
= 0; i
< n_windows
; i
++)
6393 XVECTOR (tem
)->contents
[i
]
6394 = Fmake_vector (make_number (VECSIZE (struct saved_window
)), Qnil
);
6395 save_window_save (FRAME_ROOT_WINDOW (f
), XVECTOR (tem
), 0);
6396 XSETWINDOW_CONFIGURATION (tem
, data
);
6400 DEFUN ("save-window-excursion", Fsave_window_excursion
, Ssave_window_excursion
,
6402 doc
: /* Execute BODY, preserving window sizes and contents.
6403 Return the value of the last form in BODY.
6404 Restore which buffer appears in which window, where display starts,
6405 and the value of point and mark for each window.
6406 Also restore the choice of selected window.
6407 Also restore which buffer is current.
6408 Does not restore the value of point in current buffer.
6409 usage: (save-window-excursion BODY ...) */)
6413 register Lisp_Object val
;
6414 register int count
= SPECPDL_INDEX ();
6416 record_unwind_protect (Fset_window_configuration
,
6417 Fcurrent_window_configuration (Qnil
));
6418 val
= Fprogn (args
);
6419 return unbind_to (count
, val
);
6424 /***********************************************************************
6426 ***********************************************************************/
6432 Lisp_Object tail
= Qnil
;
6433 Lisp_Object result
= Qnil
;
6440 if (!NILP (w
->hchild
))
6441 wn
= Fcons (Qnil
, Fcons (Fwindow_edges (wn
),
6442 window_tree (XWINDOW (w
->hchild
))));
6443 else if (!NILP (w
->vchild
))
6444 wn
= Fcons (Qt
, Fcons (Fwindow_edges (wn
),
6445 window_tree (XWINDOW (w
->vchild
))));
6449 result
= tail
= Fcons (wn
, Qnil
);
6453 XSETCDR (tail
, Fcons (wn
, Qnil
));
6457 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
6465 DEFUN ("window-tree", Fwindow_tree
, Swindow_tree
,
6467 doc
: /* Return the window tree for frame FRAME.
6469 The return value is a list of the form (ROOT MINI), where ROOT
6470 represents the window tree of the frame's root window, and MINI
6471 is the frame's minibuffer window.
6473 If the root window is not split, ROOT is the root window itself.
6474 Otherwise, ROOT is a list (DIR EDGES W1 W2 ...) where DIR is nil for a
6475 horizontal split, and t for a vertical split, EDGES gives the combined
6476 size and position of the subwindows in the split, and the rest of the
6477 elements are the subwindows in the split. Each of the subwindows may
6478 again be a window or a list representing a window split, and so on.
6479 EDGES is a list \(LEFT TOP RIGHT BOTTOM) as returned by `window-edges'.
6481 If FRAME is nil or omitted, return information on the currently
6489 frame
= selected_frame
;
6491 CHECK_FRAME (frame
);
6494 if (!FRAME_LIVE_P (f
))
6497 return window_tree (XWINDOW (FRAME_ROOT_WINDOW (f
)));
6501 /***********************************************************************
6503 ***********************************************************************/
6505 DEFUN ("set-window-margins", Fset_window_margins
, Sset_window_margins
,
6507 doc
: /* Set width of marginal areas of window WINDOW.
6508 If WINDOW is nil, set margins of the currently selected window.
6509 Second arg LEFT-WIDTH specifies the number of character cells to
6510 reserve for the left marginal area. Optional third arg RIGHT-WIDTH
6511 does the same for the right marginal area. A nil width parameter
6512 means no margin. */)
6513 (window
, left_width
, right_width
)
6514 Lisp_Object window
, left_width
, right_width
;
6516 struct window
*w
= decode_window (window
);
6518 /* Translate negative or zero widths to nil.
6519 Margins that are too wide have to be checked elsewhere. */
6521 if (!NILP (left_width
))
6523 CHECK_NUMBER (left_width
);
6524 if (XINT (left_width
) <= 0)
6528 if (!NILP (right_width
))
6530 CHECK_NUMBER (right_width
);
6531 if (XINT (right_width
) <= 0)
6535 if (!EQ (w
->left_margin_cols
, left_width
)
6536 || !EQ (w
->right_margin_cols
, right_width
))
6538 w
->left_margin_cols
= left_width
;
6539 w
->right_margin_cols
= right_width
;
6541 adjust_window_margins (w
);
6543 ++windows_or_buffers_changed
;
6544 adjust_glyphs (XFRAME (WINDOW_FRAME (w
)));
6551 DEFUN ("window-margins", Fwindow_margins
, Swindow_margins
,
6553 doc
: /* Get width of marginal areas of window WINDOW.
6554 If WINDOW is omitted or nil, use the currently selected window.
6555 Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH).
6556 If a marginal area does not exist, its width will be returned
6561 struct window
*w
= decode_window (window
);
6562 return Fcons (w
->left_margin_cols
, w
->right_margin_cols
);
6567 /***********************************************************************
6569 ***********************************************************************/
6571 DEFUN ("set-window-fringes", Fset_window_fringes
, Sset_window_fringes
,
6573 doc
: /* Set the fringe widths of window WINDOW.
6574 If WINDOW is nil, set the fringe widths of the currently selected
6576 Second arg LEFT-WIDTH specifies the number of pixels to reserve for
6577 the left fringe. Optional third arg RIGHT-WIDTH specifies the right
6578 fringe width. If a fringe width arg is nil, that means to use the
6579 frame's default fringe width. Default fringe widths can be set with
6580 the command `set-fringe-style'.
6581 If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes
6582 outside of the display margins. By default, fringes are drawn between
6583 display marginal areas and the text area. */)
6584 (window
, left_width
, right_width
, outside_margins
)
6585 Lisp_Object window
, left_width
, right_width
, outside_margins
;
6587 struct window
*w
= decode_window (window
);
6589 if (!NILP (left_width
))
6590 CHECK_NATNUM (left_width
);
6591 if (!NILP (right_width
))
6592 CHECK_NATNUM (right_width
);
6594 if (!EQ (w
->left_fringe_width
, left_width
)
6595 || !EQ (w
->right_fringe_width
, right_width
)
6596 || !EQ (w
->fringes_outside_margins
, outside_margins
))
6598 w
->left_fringe_width
= left_width
;
6599 w
->right_fringe_width
= right_width
;
6600 w
->fringes_outside_margins
= outside_margins
;
6602 adjust_window_margins (w
);
6604 clear_glyph_matrix (w
->current_matrix
);
6605 w
->window_end_valid
= Qnil
;
6607 ++windows_or_buffers_changed
;
6608 adjust_glyphs (XFRAME (WINDOW_FRAME (w
)));
6615 DEFUN ("window-fringes", Fwindow_fringes
, Swindow_fringes
,
6617 doc
: /* Get width of fringes of window WINDOW.
6618 If WINDOW is omitted or nil, use the currently selected window.
6619 Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */)
6623 struct window
*w
= decode_window (window
);
6624 return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w
)),
6625 Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w
)),
6626 Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
) ?
6627 Qt
: Qnil
), Qnil
)));
6632 /***********************************************************************
6634 ***********************************************************************/
6636 DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars
, Sset_window_scroll_bars
,
6638 doc
: /* Set width and type of scroll bars of window WINDOW.
6639 If window is nil, set scroll bars of the currently selected window.
6640 Second parameter WIDTH specifies the pixel width for the scroll bar;
6641 this is automatically adjusted to a multiple of the frame column width.
6642 Third parameter VERTICAL-TYPE specifies the type of the vertical scroll
6643 bar: left, right, or nil.
6644 If WIDTH is nil, use the frame's scroll-bar width.
6645 If VERTICAL-TYPE is t, use the frame's scroll-bar type.
6646 Fourth parameter HORIZONTAL-TYPE is currently unused. */)
6647 (window
, width
, vertical_type
, horizontal_type
)
6648 Lisp_Object window
, width
, vertical_type
, horizontal_type
;
6650 struct window
*w
= decode_window (window
);
6654 CHECK_NATNUM (width
);
6656 if (XINT (width
) == 0)
6657 vertical_type
= Qnil
;
6660 if (!(EQ (vertical_type
, Qnil
)
6661 || EQ (vertical_type
, Qleft
)
6662 || EQ (vertical_type
, Qright
)
6663 || EQ (vertical_type
, Qt
)))
6664 error ("Invalid type of vertical scroll bar");
6666 if (!EQ (w
->scroll_bar_width
, width
)
6667 || !EQ (w
->vertical_scroll_bar_type
, vertical_type
))
6669 w
->scroll_bar_width
= width
;
6670 w
->vertical_scroll_bar_type
= vertical_type
;
6672 adjust_window_margins (w
);
6674 clear_glyph_matrix (w
->current_matrix
);
6675 w
->window_end_valid
= Qnil
;
6677 ++windows_or_buffers_changed
;
6678 adjust_glyphs (XFRAME (WINDOW_FRAME (w
)));
6685 DEFUN ("window-scroll-bars", Fwindow_scroll_bars
, Swindow_scroll_bars
,
6687 doc
: /* Get width and type of scroll bars of window WINDOW.
6688 If WINDOW is omitted or nil, use the currently selected window.
6689 Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE).
6690 If WIDTH is nil or TYPE is t, the window is using the frame's corresponding
6695 struct window
*w
= decode_window (window
);
6696 return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w
)
6697 ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w
)
6698 : WINDOW_SCROLL_BAR_AREA_WIDTH (w
))),
6699 Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w
)),
6700 Fcons (w
->vertical_scroll_bar_type
,
6701 Fcons (Qnil
, Qnil
))));
6706 /***********************************************************************
6708 ***********************************************************************/
6710 DEFUN ("window-vscroll", Fwindow_vscroll
, Swindow_vscroll
, 0, 2, 0,
6711 doc
: /* Return the amount by which WINDOW is scrolled vertically.
6712 Use the selected window if WINDOW is nil or omitted.
6713 Normally, value is a multiple of the canonical character height of WINDOW;
6714 optional second arg PIXELS-P means value is measured in pixels. */)
6716 Lisp_Object window
, pixels_p
;
6723 window
= selected_window
;
6725 CHECK_WINDOW (window
);
6726 w
= XWINDOW (window
);
6727 f
= XFRAME (w
->frame
);
6729 if (FRAME_WINDOW_P (f
))
6730 result
= (NILP (pixels_p
)
6731 ? FRAME_CANON_Y_FROM_PIXEL_Y (f
, -w
->vscroll
)
6732 : make_number (-w
->vscroll
));
6734 result
= make_number (0);
6739 DEFUN ("set-window-vscroll", Fset_window_vscroll
, Sset_window_vscroll
,
6741 doc
: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL.
6742 WINDOW nil means use the selected window. Normally, VSCROLL is a
6743 non-negative multiple of the canonical character height of WINDOW;
6744 optional third arg PIXELS-P non-nil means that VSCROLL is in pixels.
6745 If PIXELS-P is nil, VSCROLL may have to be rounded so that it
6746 corresponds to an integral number of pixels. The return value is the
6747 result of this rounding.
6748 If PIXELS-P is non-nil, the return value is VSCROLL. */)
6749 (window
, vscroll
, pixels_p
)
6750 Lisp_Object window
, vscroll
, pixels_p
;
6756 window
= selected_window
;
6758 CHECK_WINDOW (window
);
6759 CHECK_NUMBER_OR_FLOAT (vscroll
);
6761 w
= XWINDOW (window
);
6762 f
= XFRAME (w
->frame
);
6764 if (FRAME_WINDOW_P (f
))
6766 int old_dy
= w
->vscroll
;
6768 w
->vscroll
= - (NILP (pixels_p
)
6769 ? FRAME_LINE_HEIGHT (f
) * XFLOATINT (vscroll
)
6770 : XFLOATINT (vscroll
));
6771 w
->vscroll
= min (w
->vscroll
, 0);
6773 if (w
->vscroll
!= old_dy
)
6775 /* Adjust glyph matrix of the frame if the virtual display
6776 area becomes larger than before. */
6777 if (w
->vscroll
< 0 && w
->vscroll
< old_dy
)
6780 /* Prevent redisplay shortcuts. */
6781 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
6785 return Fwindow_vscroll (window
, pixels_p
);
6789 /* Call FN for all leaf windows on frame F. FN is called with the
6790 first argument being a pointer to the leaf window, and with
6791 additional argument USER_DATA. Stops when FN returns 0. */
6794 foreach_window (f
, fn
, user_data
)
6796 int (* fn
) P_ ((struct window
*, void *));
6799 foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f
)), fn
, user_data
);
6803 /* Helper function for foreach_window. Call FN for all leaf windows
6804 reachable from W. FN is called with the first argument being a
6805 pointer to the leaf window, and with additional argument USER_DATA.
6806 Stop when FN returns 0. Value is 0 if stopped by FN. */
6809 foreach_window_1 (w
, fn
, user_data
)
6811 int (* fn
) P_ ((struct window
*, void *));
6816 for (cont
= 1; w
&& cont
;)
6818 if (!NILP (w
->hchild
))
6819 cont
= foreach_window_1 (XWINDOW (w
->hchild
), fn
, user_data
);
6820 else if (!NILP (w
->vchild
))
6821 cont
= foreach_window_1 (XWINDOW (w
->vchild
), fn
, user_data
);
6823 cont
= fn (w
, user_data
);
6825 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
6832 /* Freeze or unfreeze the window start of W unless it is a
6833 mini-window or the selected window. FREEZE_P non-null means freeze
6834 the window start. */
6837 freeze_window_start (w
, freeze_p
)
6841 if (w
== XWINDOW (selected_window
)
6842 || MINI_WINDOW_P (w
)
6843 || (MINI_WINDOW_P (XWINDOW (selected_window
))
6844 && ! NILP (Vminibuf_scroll_window
)
6845 && w
== XWINDOW (Vminibuf_scroll_window
)))
6848 w
->frozen_window_start_p
= freeze_p
!= NULL
;
6853 /* Freeze or unfreeze the window starts of all leaf windows on frame
6854 F, except the selected window and a mini-window. FREEZE_P non-zero
6855 means freeze the window start. */
6858 freeze_window_starts (f
, freeze_p
)
6862 foreach_window (f
, freeze_window_start
, (void *) (freeze_p
? f
: 0));
6866 /***********************************************************************
6868 ***********************************************************************/
6870 /* Return 1 if window configurations C1 and C2
6871 describe the same state of affairs. This is used by Fequal. */
6874 compare_window_configurations (c1
, c2
, ignore_positions
)
6876 int ignore_positions
;
6878 register struct save_window_data
*d1
, *d2
;
6879 struct Lisp_Vector
*sw1
, *sw2
;
6882 if (!WINDOW_CONFIGURATIONP (c1
))
6883 wrong_type_argument (Qwindow_configuration_p
, c1
);
6884 if (!WINDOW_CONFIGURATIONP (c2
))
6885 wrong_type_argument (Qwindow_configuration_p
, c2
);
6887 d1
= (struct save_window_data
*) XVECTOR (c1
);
6888 d2
= (struct save_window_data
*) XVECTOR (c2
);
6889 sw1
= XVECTOR (d1
->saved_windows
);
6890 sw2
= XVECTOR (d2
->saved_windows
);
6892 if (! EQ (d1
->frame_cols
, d2
->frame_cols
))
6894 if (! EQ (d1
->frame_lines
, d2
->frame_lines
))
6896 if (! EQ (d1
->frame_menu_bar_lines
, d2
->frame_menu_bar_lines
))
6898 if (! EQ (d1
->selected_frame
, d2
->selected_frame
))
6900 /* Don't compare the current_window field directly.
6901 Instead see w1_is_current and w2_is_current, below. */
6902 if (! EQ (d1
->current_buffer
, d2
->current_buffer
))
6904 if (! ignore_positions
)
6906 if (! EQ (d1
->minibuf_scroll_window
, d2
->minibuf_scroll_window
))
6908 if (! EQ (d1
->minibuf_selected_window
, d2
->minibuf_selected_window
))
6911 /* Don't compare the root_window field.
6912 We don't require the two configurations
6913 to use the same window object,
6914 and the two root windows must be equivalent
6915 if everything else compares equal. */
6916 if (! EQ (d1
->focus_frame
, d2
->focus_frame
))
6918 if (! EQ (d1
->min_width
, d2
->min_width
))
6920 if (! EQ (d1
->min_height
, d2
->min_height
))
6923 /* Verify that the two confis have the same number of windows. */
6924 if (sw1
->size
!= sw2
->size
)
6927 for (i
= 0; i
< sw1
->size
; i
++)
6929 struct saved_window
*p1
, *p2
;
6930 int w1_is_current
, w2_is_current
;
6932 p1
= SAVED_WINDOW_N (sw1
, i
);
6933 p2
= SAVED_WINDOW_N (sw2
, i
);
6935 /* Verify that the current windows in the two
6936 configurations correspond to each other. */
6937 w1_is_current
= EQ (d1
->current_window
, p1
->window
);
6938 w2_is_current
= EQ (d2
->current_window
, p2
->window
);
6940 if (w1_is_current
!= w2_is_current
)
6943 /* Verify that the corresponding windows do match. */
6944 if (! EQ (p1
->buffer
, p2
->buffer
))
6946 if (! EQ (p1
->left_col
, p2
->left_col
))
6948 if (! EQ (p1
->top_line
, p2
->top_line
))
6950 if (! EQ (p1
->total_cols
, p2
->total_cols
))
6952 if (! EQ (p1
->total_lines
, p2
->total_lines
))
6954 if (! EQ (p1
->display_table
, p2
->display_table
))
6956 if (! EQ (p1
->parent
, p2
->parent
))
6958 if (! EQ (p1
->prev
, p2
->prev
))
6960 if (! ignore_positions
)
6962 if (! EQ (p1
->hscroll
, p2
->hscroll
))
6964 if (!EQ (p1
->min_hscroll
, p2
->min_hscroll
))
6966 if (! EQ (p1
->start_at_line_beg
, p2
->start_at_line_beg
))
6968 if (NILP (Fequal (p1
->start
, p2
->start
)))
6970 if (NILP (Fequal (p1
->pointm
, p2
->pointm
)))
6972 if (NILP (Fequal (p1
->mark
, p2
->mark
)))
6975 if (! EQ (p1
->left_margin_cols
, p2
->left_margin_cols
))
6977 if (! EQ (p1
->right_margin_cols
, p2
->right_margin_cols
))
6979 if (! EQ (p1
->left_fringe_width
, p2
->left_fringe_width
))
6981 if (! EQ (p1
->right_fringe_width
, p2
->right_fringe_width
))
6983 if (! EQ (p1
->fringes_outside_margins
, p2
->fringes_outside_margins
))
6985 if (! EQ (p1
->scroll_bar_width
, p2
->scroll_bar_width
))
6987 if (! EQ (p1
->vertical_scroll_bar_type
, p2
->vertical_scroll_bar_type
))
6994 DEFUN ("compare-window-configurations", Fcompare_window_configurations
,
6995 Scompare_window_configurations
, 2, 2, 0,
6996 doc
: /* Compare two window configurations as regards the structure of windows.
6997 This function ignores details such as the values of point and mark
6998 and scrolling positions. */)
7002 if (compare_window_configurations (x
, y
, 1))
7010 struct frame
*f
= make_terminal_frame ();
7011 XSETFRAME (selected_frame
, f
);
7012 Vterminal_frame
= selected_frame
;
7013 minibuf_window
= f
->minibuffer_window
;
7014 selected_window
= f
->selected_window
;
7015 last_nonminibuf_frame
= f
;
7017 window_initialized
= 1;
7023 Vwindow_list
= Qnil
;
7029 Qscroll_up
= intern ("scroll-up");
7030 staticpro (&Qscroll_up
);
7032 Qscroll_down
= intern ("scroll-down");
7033 staticpro (&Qscroll_down
);
7035 Qwindow_size_fixed
= intern ("window-size-fixed");
7036 staticpro (&Qwindow_size_fixed
);
7037 Fset (Qwindow_size_fixed
, Qnil
);
7039 staticpro (&Qwindow_configuration_change_hook
);
7040 Qwindow_configuration_change_hook
7041 = intern ("window-configuration-change-hook");
7043 Qwindowp
= intern ("windowp");
7044 staticpro (&Qwindowp
);
7046 Qwindow_configuration_p
= intern ("window-configuration-p");
7047 staticpro (&Qwindow_configuration_p
);
7049 Qwindow_live_p
= intern ("window-live-p");
7050 staticpro (&Qwindow_live_p
);
7052 Qtemp_buffer_show_hook
= intern ("temp-buffer-show-hook");
7053 staticpro (&Qtemp_buffer_show_hook
);
7055 staticpro (&Vwindow_list
);
7057 minibuf_selected_window
= Qnil
;
7058 staticpro (&minibuf_selected_window
);
7060 window_scroll_pixel_based_preserve_y
= -1;
7062 DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function
,
7063 doc
: /* Non-nil means call as function to display a help buffer.
7064 The function is called with one argument, the buffer to be displayed.
7065 Used by `with-output-to-temp-buffer'.
7066 If this function is used, then it must do the entire job of showing
7067 the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */);
7068 Vtemp_buffer_show_function
= Qnil
;
7070 DEFVAR_LISP ("display-buffer-function", &Vdisplay_buffer_function
,
7071 doc
: /* If non-nil, function to call to handle `display-buffer'.
7072 It will receive two args, the buffer and a flag which if non-nil means
7073 that the currently selected window is not acceptable.
7074 It should choose or create a window, display the specified buffer in it,
7075 and return the window.
7076 Commands such as `switch-to-buffer-other-window' and `find-file-other-window'
7077 work using this function. */);
7078 Vdisplay_buffer_function
= Qnil
;
7080 DEFVAR_LISP ("even-window-heights", &Veven_window_heights
,
7081 doc
: /* *If non-nil, `display-buffer' should even the window heights.
7082 If nil, `display-buffer' will leave the window configuration alone. */);
7083 Veven_window_heights
= Qt
;
7085 DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window
,
7086 doc
: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */);
7087 Vminibuf_scroll_window
= Qnil
;
7089 DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows
,
7090 doc
: /* Non-nil means to use `mode-line-inactive' face in non-selected windows.
7091 If the minibuffer is active, the `minibuffer-scroll-window' mode line
7092 is displayed in the `mode-line' face. */);
7093 mode_line_in_non_selected_windows
= 1;
7095 DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer
,
7096 doc
: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */);
7097 Vother_window_scroll_buffer
= Qnil
;
7099 DEFVAR_BOOL ("pop-up-frames", &pop_up_frames
,
7100 doc
: /* *Non-nil means `display-buffer' should make a separate frame. */);
7103 DEFVAR_BOOL ("auto-window-vscroll", &auto_window_vscroll_p
,
7104 doc
: /* *Non-nil means to automatically adjust `window-vscroll' to view tall lines. */);
7105 auto_window_vscroll_p
= 1;
7107 DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames
,
7108 doc
: /* *Non-nil means `display-buffer' should reuse frames.
7109 If the buffer in question is already displayed in a frame, raise that frame. */);
7110 display_buffer_reuse_frames
= 0;
7112 DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function
,
7113 doc
: /* Function to call to handle automatic new frame creation.
7114 It is called with no arguments and should return a newly created frame.
7116 A typical value might be `(lambda () (new-frame pop-up-frame-alist))'
7117 where `pop-up-frame-alist' would hold the default frame parameters. */);
7118 Vpop_up_frame_function
= Qnil
;
7120 DEFVAR_LISP ("special-display-buffer-names", &Vspecial_display_buffer_names
,
7121 doc
: /* *List of buffer names that should have their own special frames.
7122 Displaying a buffer with `display-buffer' or `pop-to-buffer',
7123 if its name is in this list, makes a special frame for it
7124 using `special-display-function'. See also `special-display-regexps'.
7126 An element of the list can be a list instead of just a string.
7127 There are two ways to use a list as an element:
7128 (BUFFER FRAME-PARAMETERS...) (BUFFER FUNCTION OTHER-ARGS...)
7129 In the first case, the FRAME-PARAMETERS are pairs of the form
7130 \(PARAMETER . VALUE); these parameter values are used to create the frame.
7131 In the second case, FUNCTION is called with BUFFER as the first argument,
7132 followed by the OTHER-ARGS--it can display BUFFER in any way it likes.
7133 All this is done by the function found in `special-display-function'.
7135 If the specified frame parameters include (same-buffer . t), the
7136 buffer is displayed in the currently selected window. Otherwise, if
7137 they include (same-frame . t), the buffer is displayed in a new window
7138 in the currently selected frame.
7140 If this variable appears \"not to work\", because you add a name to it
7141 but that buffer still appears in the selected window, look at the
7142 values of `same-window-buffer-names' and `same-window-regexps'.
7143 Those variables take precedence over this one. */);
7144 Vspecial_display_buffer_names
= Qnil
;
7146 DEFVAR_LISP ("special-display-regexps", &Vspecial_display_regexps
,
7147 doc
: /* *List of regexps saying which buffers should have their own special frames.
7148 When displaying a buffer with `display-buffer' or `pop-to-buffer',
7149 if any regexp in this list matches the buffer name, it makes a
7150 special frame for the buffer by calling `special-display-function'.
7152 An element of the list can be a list instead of just a string.
7153 There are two ways to use a list as an element:
7154 (REGEXP FRAME-PARAMETERS...) (REGEXP FUNCTION OTHER-ARGS...)
7155 In the first case, the FRAME-PARAMETERS are pairs of the form
7156 \(PARAMETER . VALUE); these parameter values are used to create the frame.
7157 In the second case, FUNCTION is called with BUFFER as the first argument,
7158 followed by the OTHER-ARGS--it can display the buffer in any way it likes.
7159 All this is done by the function found in `special-display-function'.
7161 If the specified frame parameters include (same-buffer . t), the
7162 buffer is displayed in the currently selected window. Otherwise, if
7163 they include (same-frame . t), the buffer is displayed in a new window
7164 in the currently selected frame.
7166 If this variable appears \"not to work\", because you add a regexp to it
7167 but the matching buffers still appear in the selected window, look at the
7168 values of `same-window-buffer-names' and `same-window-regexps'.
7169 Those variables take precedence over this one. */);
7170 Vspecial_display_regexps
= Qnil
;
7172 DEFVAR_LISP ("special-display-function", &Vspecial_display_function
,
7173 doc
: /* Function to call to make a new frame for a special buffer.
7174 It is called with two arguments, the buffer and optional buffer specific
7175 data, and should return a window displaying that buffer.
7176 The default value normally makes a separate frame for the buffer,
7177 using `special-display-frame-alist' to specify the frame parameters.
7178 But if the buffer specific data includes (same-buffer . t) then the
7179 buffer is displayed in the current selected window.
7180 Otherwise if it includes (same-frame . t) then the buffer is displayed in
7181 a new window in the currently selected frame.
7183 A buffer is special if it is listed in `special-display-buffer-names'
7184 or matches a regexp in `special-display-regexps'. */);
7185 Vspecial_display_function
= Qnil
;
7187 DEFVAR_LISP ("same-window-buffer-names", &Vsame_window_buffer_names
,
7188 doc
: /* *List of buffer names that should appear in the selected window.
7189 Displaying one of these buffers using `display-buffer' or `pop-to-buffer'
7190 switches to it in the selected window, rather than making it appear
7191 in some other window.
7193 An element of the list can be a cons cell instead of just a string.
7194 Then the car must be a string, which specifies the buffer name.
7195 This is for compatibility with `special-display-buffer-names';
7196 the cdr of the cons cell is ignored.
7198 See also `same-window-regexps'. */);
7199 Vsame_window_buffer_names
= Qnil
;
7201 DEFVAR_LISP ("same-window-regexps", &Vsame_window_regexps
,
7202 doc
: /* *List of regexps saying which buffers should appear in the selected window.
7203 If a buffer name matches one of these regexps, then displaying it
7204 using `display-buffer' or `pop-to-buffer' switches to it
7205 in the selected window, rather than making it appear in some other window.
7207 An element of the list can be a cons cell instead of just a string.
7208 Then the car must be a string, which specifies the buffer name.
7209 This is for compatibility with `special-display-buffer-names';
7210 the cdr of the cons cell is ignored.
7212 See also `same-window-buffer-names'. */);
7213 Vsame_window_regexps
= Qnil
;
7215 DEFVAR_BOOL ("pop-up-windows", &pop_up_windows
,
7216 doc
: /* *Non-nil means display-buffer should make new windows. */);
7219 DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines
,
7220 doc
: /* *Number of lines of continuity when scrolling by screenfuls. */);
7221 next_screen_context_lines
= 2;
7223 DEFVAR_INT ("split-height-threshold", &split_height_threshold
,
7224 doc
: /* *A window must be at least this tall to be eligible for splitting by `display-buffer'.
7225 If there is only one window, it is split regardless of this value. */);
7226 split_height_threshold
= 500;
7228 DEFVAR_INT ("window-min-height", &window_min_height
,
7229 doc
: /* *Delete any window less than this tall (including its mode line). */);
7230 window_min_height
= 4;
7232 DEFVAR_INT ("window-min-width", &window_min_width
,
7233 doc
: /* *Delete any window less than this wide. */);
7234 window_min_width
= 10;
7236 DEFVAR_LISP ("scroll-preserve-screen-position",
7237 &Vscroll_preserve_screen_position
,
7238 doc
: /* *Controls if scroll commands move point to keep its screen line unchanged.
7239 A value of nil means point does not keep its screen position except
7240 at the scroll margin or window boundary respectively.
7241 A value of t means point keeps its screen position if the scroll
7242 command moved it vertically out of the window, e.g. when scrolling
7244 Any other value means point always keeps its screen position. */);
7245 Vscroll_preserve_screen_position
= Qnil
;
7247 DEFVAR_LISP ("window-configuration-change-hook",
7248 &Vwindow_configuration_change_hook
,
7249 doc
: /* Functions to call when window configuration changes.
7250 The selected frame is the one whose configuration has changed. */);
7251 Vwindow_configuration_change_hook
= Qnil
;
7253 defsubr (&Sselected_window
);
7254 defsubr (&Sminibuffer_window
);
7255 defsubr (&Swindow_minibuffer_p
);
7256 defsubr (&Swindowp
);
7257 defsubr (&Swindow_live_p
);
7258 defsubr (&Spos_visible_in_window_p
);
7259 defsubr (&Swindow_buffer
);
7260 defsubr (&Swindow_height
);
7261 defsubr (&Swindow_width
);
7262 defsubr (&Swindow_hscroll
);
7263 defsubr (&Sset_window_hscroll
);
7264 defsubr (&Swindow_redisplay_end_trigger
);
7265 defsubr (&Sset_window_redisplay_end_trigger
);
7266 defsubr (&Swindow_edges
);
7267 defsubr (&Swindow_pixel_edges
);
7268 defsubr (&Swindow_inside_edges
);
7269 defsubr (&Swindow_inside_pixel_edges
);
7270 defsubr (&Scoordinates_in_window_p
);
7271 defsubr (&Swindow_at
);
7272 defsubr (&Swindow_point
);
7273 defsubr (&Swindow_start
);
7274 defsubr (&Swindow_end
);
7275 defsubr (&Sset_window_point
);
7276 defsubr (&Sset_window_start
);
7277 defsubr (&Swindow_dedicated_p
);
7278 defsubr (&Sset_window_dedicated_p
);
7279 defsubr (&Swindow_display_table
);
7280 defsubr (&Sset_window_display_table
);
7281 defsubr (&Snext_window
);
7282 defsubr (&Sprevious_window
);
7283 defsubr (&Sother_window
);
7284 defsubr (&Sget_lru_window
);
7285 defsubr (&Sget_largest_window
);
7286 defsubr (&Sget_buffer_window
);
7287 defsubr (&Sdelete_other_windows
);
7288 defsubr (&Sdelete_windows_on
);
7289 defsubr (&Sreplace_buffer_in_windows
);
7290 defsubr (&Sdelete_window
);
7291 defsubr (&Sset_window_buffer
);
7292 defsubr (&Sselect_window
);
7293 defsubr (&Sspecial_display_p
);
7294 defsubr (&Ssame_window_p
);
7295 defsubr (&Sdisplay_buffer
);
7296 defsubr (&Sforce_window_update
);
7297 defsubr (&Ssplit_window
);
7298 defsubr (&Senlarge_window
);
7299 defsubr (&Sshrink_window
);
7300 defsubr (&Sadjust_window_trailing_edge
);
7301 defsubr (&Sscroll_up
);
7302 defsubr (&Sscroll_down
);
7303 defsubr (&Sscroll_left
);
7304 defsubr (&Sscroll_right
);
7305 defsubr (&Sother_window_for_scrolling
);
7306 defsubr (&Sscroll_other_window
);
7307 defsubr (&Sminibuffer_selected_window
);
7308 defsubr (&Srecenter
);
7309 defsubr (&Swindow_text_height
);
7310 defsubr (&Smove_to_window_line
);
7311 defsubr (&Swindow_configuration_p
);
7312 defsubr (&Swindow_configuration_frame
);
7313 defsubr (&Sset_window_configuration
);
7314 defsubr (&Scurrent_window_configuration
);
7315 defsubr (&Ssave_window_excursion
);
7316 defsubr (&Swindow_tree
);
7317 defsubr (&Sset_window_margins
);
7318 defsubr (&Swindow_margins
);
7319 defsubr (&Sset_window_fringes
);
7320 defsubr (&Swindow_fringes
);
7321 defsubr (&Sset_window_scroll_bars
);
7322 defsubr (&Swindow_scroll_bars
);
7323 defsubr (&Swindow_vscroll
);
7324 defsubr (&Sset_window_vscroll
);
7325 defsubr (&Scompare_window_configurations
);
7326 defsubr (&Swindow_list
);
7332 initial_define_key (control_x_map
, '1', "delete-other-windows");
7333 initial_define_key (control_x_map
, '2', "split-window");
7334 initial_define_key (control_x_map
, '0', "delete-window");
7335 initial_define_key (control_x_map
, 'o', "other-window");
7336 initial_define_key (control_x_map
, '^', "enlarge-window");
7337 initial_define_key (control_x_map
, '<', "scroll-left");
7338 initial_define_key (control_x_map
, '>', "scroll-right");
7340 initial_define_key (global_map
, Ctl ('V'), "scroll-up");
7341 initial_define_key (meta_map
, Ctl ('V'), "scroll-other-window");
7342 initial_define_key (meta_map
, 'v', "scroll-down");
7344 initial_define_key (global_map
, Ctl('L'), "recenter");
7345 initial_define_key (meta_map
, 'r', "move-to-window-line");
7348 /* arch-tag: 90a9c576-0590-48f1-a5f1-6c96a0452d9f
7349 (do not change this comment) */