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, 2007, 2008
5 Free Software Foundation, Inc.
7 This file is part of GNU Emacs.
9 GNU Emacs is free software: you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation, either version 3 of the License, or
12 (at your option) any later version.
14 GNU Emacs is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
35 #include "dispextern.h"
36 #include "blockinput.h"
37 #include "intervals.h"
38 #include "termhooks.h" /* For FRAME_TERMINAL. */
42 #endif /* HAVE_X_WINDOWS */
54 Lisp_Object Qwindowp
, Qwindow_live_p
, Qwindow_configuration_p
;
55 Lisp_Object Qdisplay_buffer
;
56 Lisp_Object Qscroll_up
, Qscroll_down
;
57 Lisp_Object Qwindow_size_fixed
;
59 extern Lisp_Object Qleft_margin
, Qright_margin
;
61 static int displayed_window_lines
P_ ((struct window
*));
62 static struct window
*decode_window
P_ ((Lisp_Object
));
63 static int count_windows
P_ ((struct window
*));
64 static int get_leaf_windows
P_ ((struct window
*, struct window
**, int));
65 static void window_scroll
P_ ((Lisp_Object
, int, int, int));
66 static void window_scroll_pixel_based
P_ ((Lisp_Object
, int, int, int));
67 static void window_scroll_line_based
P_ ((Lisp_Object
, int, int, int));
68 static int window_min_size_1
P_ ((struct window
*, int, int));
69 static int window_min_size_2
P_ ((struct window
*, int, int));
70 static int window_min_size
P_ ((struct window
*, int, int, int, int *));
71 static void size_window
P_ ((Lisp_Object
, int, int, int, int, int));
72 static int freeze_window_start
P_ ((struct window
*, void *));
73 static int window_fixed_size_p
P_ ((struct window
*, int, int));
74 static void enlarge_window
P_ ((Lisp_Object
, int, int));
75 static Lisp_Object window_list
P_ ((void));
76 static int add_window_to_list
P_ ((struct window
*, void *));
77 static int candidate_window_p
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
,
79 static Lisp_Object next_window
P_ ((Lisp_Object
, Lisp_Object
,
81 static void decode_next_window_args
P_ ((Lisp_Object
*, Lisp_Object
*,
83 static int foreach_window_1
P_ ((struct window
*,
84 int (* fn
) (struct window
*, void *),
86 static Lisp_Object window_list_1
P_ ((Lisp_Object
, Lisp_Object
, Lisp_Object
));
88 /* This is the window in which the terminal's cursor should
89 be left when nothing is being done with it. This must
90 always be a leaf window, and its buffer is selected by
91 the top level editing loop at the end of each command.
93 This value is always the same as
94 FRAME_SELECTED_WINDOW (selected_frame). */
96 Lisp_Object selected_window
;
98 /* A list of all windows for use by next_window and Fwindow_list.
99 Functions creating or deleting windows should invalidate this cache
100 by setting it to nil. */
102 Lisp_Object Vwindow_list
;
104 /* The mini-buffer window of the selected frame.
105 Note that you cannot test for mini-bufferness of an arbitrary window
106 by comparing against this; but you can test for mini-bufferness of
107 the selected window. */
109 Lisp_Object minibuf_window
;
111 /* Non-nil means it is the window whose mode line should be
112 shown as the selected window when the minibuffer is selected. */
114 Lisp_Object minibuf_selected_window
;
116 /* Non-nil means it is the window for C-M-v to scroll
117 when the mini-buffer is selected. */
119 Lisp_Object Vminibuf_scroll_window
;
121 /* Non-nil means this is the buffer whose window C-M-v should scroll. */
123 Lisp_Object Vother_window_scroll_buffer
;
125 /* Non-nil means it's function to call to display temp buffers. */
127 Lisp_Object Vtemp_buffer_show_function
;
129 /* Non-zero means line and page scrolling on tall lines (with images)
130 does partial scrolling by modifying window-vscroll. */
132 int auto_window_vscroll_p
;
134 /* Non-zero means to use mode-line-inactive face in all windows but the
135 selected-window and the minibuffer-scroll-window when the
136 minibuffer is active. */
137 int mode_line_in_non_selected_windows
;
139 /* If a window gets smaller than either of these, it is removed. */
141 EMACS_INT window_min_height
;
142 EMACS_INT window_min_width
;
144 /* Hook run at end of temp_output_buffer_show. */
146 Lisp_Object Qtemp_buffer_show_hook
;
148 /* Number of lines of continuity in scrolling by screenfuls. */
150 EMACS_INT next_screen_context_lines
;
152 /* Incremented for each window created. */
154 static int sequence_number
;
156 /* Nonzero after init_window_once has finished. */
158 static int window_initialized
;
160 /* Hook to run when window config changes. */
162 static Lisp_Object Qwindow_configuration_change_hook
;
163 static Lisp_Object Vwindow_configuration_change_hook
;
165 /* Non-nil means scroll commands try to put point
166 at the same screen height as previously. */
168 Lisp_Object Vscroll_preserve_screen_position
;
170 /* Non-nil means that text is inserted before window's markers. */
172 Lisp_Object Vwindow_point_insertion_type
;
174 /* Incremented by 1 whenever a window is deleted. */
176 int window_deletion_count
;
178 /* Used by the function window_scroll_pixel_based */
180 static int window_scroll_pixel_based_preserve_x
;
181 static int window_scroll_pixel_based_preserve_y
;
183 /* Same for window_scroll_line_based. */
185 static int window_scroll_preserve_hpos
;
186 static int window_scroll_preserve_vpos
;
188 #if 0 /* This isn't used anywhere. */
189 /* Nonzero means we can split a frame even if it is "unsplittable". */
190 static int inhibit_frame_unsplittable
;
193 extern EMACS_INT scroll_margin
;
195 extern Lisp_Object Qwindow_scroll_functions
, Vwindow_scroll_functions
;
197 DEFUN ("windowp", Fwindowp
, Swindowp
, 1, 1, 0,
198 doc
: /* Return t if OBJECT is a window. */)
202 return WINDOWP (object
) ? Qt
: Qnil
;
205 DEFUN ("window-live-p", Fwindow_live_p
, Swindow_live_p
, 1, 1, 0,
206 doc
: /* Return t if OBJECT is a window which is currently visible. */)
210 return WINDOW_LIVE_P (object
) ? Qt
: Qnil
;
217 register struct window
*p
;
219 p
= allocate_window ();
221 XSETFASTINT (p
->sequence_number
, sequence_number
);
222 XSETFASTINT (p
->left_col
, 0);
223 XSETFASTINT (p
->top_line
, 0);
224 XSETFASTINT (p
->total_lines
, 0);
225 XSETFASTINT (p
->total_cols
, 0);
226 XSETFASTINT (p
->hscroll
, 0);
227 XSETFASTINT (p
->min_hscroll
, 0);
228 p
->orig_top_line
= p
->orig_total_lines
= Qnil
;
229 p
->start
= Fmake_marker ();
230 p
->pointm
= Fmake_marker ();
231 XSETFASTINT (p
->use_time
, 0);
233 p
->display_table
= Qnil
;
235 p
->window_parameters
= Qnil
;
236 p
->pseudo_window_p
= 0;
237 bzero (&p
->cursor
, sizeof (p
->cursor
));
238 bzero (&p
->last_cursor
, sizeof (p
->last_cursor
));
239 bzero (&p
->phys_cursor
, sizeof (p
->phys_cursor
));
240 p
->desired_matrix
= p
->current_matrix
= 0;
241 p
->nrows_scale_factor
= p
->ncols_scale_factor
= 1;
242 p
->phys_cursor_type
= -1;
243 p
->phys_cursor_width
= -1;
244 p
->must_be_updated_p
= 0;
245 XSETFASTINT (p
->window_end_vpos
, 0);
246 XSETFASTINT (p
->window_end_pos
, 0);
247 p
->window_end_valid
= Qnil
;
250 XSETFASTINT (p
->last_point
, 0);
251 p
->frozen_window_start_p
= 0;
252 p
->last_cursor_off_p
= p
->cursor_off_p
= 0;
253 p
->left_margin_cols
= Qnil
;
254 p
->right_margin_cols
= Qnil
;
255 p
->left_fringe_width
= Qnil
;
256 p
->right_fringe_width
= Qnil
;
257 p
->fringes_outside_margins
= Qnil
;
258 p
->scroll_bar_width
= Qnil
;
259 p
->vertical_scroll_bar_type
= Qt
;
260 p
->resize_proportionally
= Qnil
;
266 DEFUN ("selected-window", Fselected_window
, Sselected_window
, 0, 0, 0,
267 doc
: /* Return the window that the cursor now appears in and commands apply to. */)
270 return selected_window
;
273 DEFUN ("minibuffer-window", Fminibuffer_window
, Sminibuffer_window
, 0, 1, 0,
274 doc
: /* Return the window used now for minibuffers.
275 If the optional argument FRAME is specified, return the minibuffer window
276 used by that frame. */)
281 frame
= selected_frame
;
282 CHECK_LIVE_FRAME (frame
);
283 return FRAME_MINIBUF_WINDOW (XFRAME (frame
));
286 DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p
, Swindow_minibuffer_p
, 0, 1, 0,
287 doc
: /* Return non-nil if WINDOW is a minibuffer window.
288 WINDOW defaults to the selected window. */)
292 struct window
*w
= decode_window (window
);
293 return MINI_WINDOW_P (w
) ? Qt
: Qnil
;
297 DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p
,
298 Spos_visible_in_window_p
, 0, 3, 0,
299 doc
: /* Return non-nil if position POS is currently on the frame in WINDOW.
300 Return nil if that position is scrolled vertically out of view.
301 If a character is only partially visible, nil is returned, unless the
302 optional argument PARTIALLY is non-nil.
303 If POS is only out of view because of horizontal scrolling, return non-nil.
304 If POS is t, it specifies the position of the last visible glyph in WINDOW.
305 POS defaults to point in WINDOW; WINDOW defaults to the selected window.
307 If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil,
308 return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]),
309 where X and Y are the pixel coordinates relative to the top left corner
310 of the window. The remaining elements are omitted if the character after
311 POS is fully visible; otherwise, RTOP and RBOT are the number of pixels
312 off-window at the top and bottom of the row, ROWH is the height of the
313 display row, and VPOS is the row number (0-based) containing POS. */)
314 (pos
, window
, partially
)
315 Lisp_Object pos
, window
, partially
;
317 register struct window
*w
;
319 register struct buffer
*buf
;
321 Lisp_Object in_window
= Qnil
;
322 int rtop
, rbot
, rowh
, vpos
, fully_p
= 1;
325 w
= decode_window (window
);
326 buf
= XBUFFER (w
->buffer
);
327 SET_TEXT_POS_FROM_MARKER (top
, w
->start
);
331 else if (!NILP (pos
))
333 CHECK_NUMBER_COERCE_MARKER (pos
);
336 else if (w
== XWINDOW (selected_window
))
339 posint
= XMARKER (w
->pointm
)->charpos
;
341 /* If position is above window start or outside buffer boundaries,
342 or if window start is out of range, position is not visible. */
344 || (posint
>= CHARPOS (top
) && posint
<= BUF_ZV (buf
)))
345 && CHARPOS (top
) >= BUF_BEGV (buf
)
346 && CHARPOS (top
) <= BUF_ZV (buf
)
347 && pos_visible_p (w
, posint
, &x
, &y
, &rtop
, &rbot
, &rowh
, &vpos
)
348 && (fully_p
= !rtop
&& !rbot
, (!NILP (partially
) || fully_p
)))
351 if (!NILP (in_window
) && !NILP (partially
))
353 Lisp_Object part
= Qnil
;
355 part
= list4 (make_number (rtop
), make_number (rbot
),
356 make_number (rowh
), make_number (vpos
));
357 in_window
= Fcons (make_number (x
),
358 Fcons (make_number (y
), part
));
364 DEFUN ("window-line-height", Fwindow_line_height
,
365 Swindow_line_height
, 0, 2, 0,
366 doc
: /* Return height in pixels of text line LINE in window WINDOW.
367 If WINDOW is nil or omitted, use selected window.
369 Return height of current line if LINE is omitted or nil. Return height of
370 header or mode line if LINE is `header-line' and `mode-line'.
371 Otherwise, LINE is a text line number starting from 0. A negative number
372 counts from the end of the window.
374 Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height
375 in pixels of the visible part of the line, VPOS and YPOS are the
376 vertical position in lines and pixels of the line, relative to the top
377 of the first text line, and OFFBOT is the number of off-window pixels at
378 the bottom of the text line. If there are off-window pixels at the top
379 of the (first) text line, YPOS is negative.
381 Return nil if window display is not up-to-date. In that case, use
382 `pos-visible-in-window-p' to obtain the information. */)
384 Lisp_Object line
, window
;
386 register struct window
*w
;
387 register struct buffer
*b
;
388 struct glyph_row
*row
, *end_row
;
389 int max_y
, crop
, i
, n
;
391 w
= decode_window (window
);
394 || w
->pseudo_window_p
)
397 CHECK_BUFFER (w
->buffer
);
398 b
= XBUFFER (w
->buffer
);
400 /* Fail if current matrix is not up-to-date. */
401 if (NILP (w
->window_end_valid
)
402 || current_buffer
->clip_changed
403 || current_buffer
->prevent_redisplay_optimizations_p
404 || XFASTINT (w
->last_modified
) < BUF_MODIFF (b
)
405 || XFASTINT (w
->last_overlay_modified
) < BUF_OVERLAY_MODIFF (b
))
411 if (i
< 0 || i
>= w
->current_matrix
->nrows
412 || (row
= MATRIX_ROW (w
->current_matrix
, i
), !row
->enabled_p
))
414 max_y
= window_text_bottom_y (w
);
418 if (EQ (line
, Qheader_line
))
420 if (!WINDOW_WANTS_HEADER_LINE_P (w
))
422 row
= MATRIX_HEADER_LINE_ROW (w
->current_matrix
);
425 return list4 (make_number (row
->height
),
426 make_number (0), make_number (0),
430 if (EQ (line
, Qmode_line
))
432 row
= MATRIX_MODE_LINE_ROW (w
->current_matrix
);
435 return list4 (make_number (row
->height
),
436 make_number (0), /* not accurate */
437 make_number (WINDOW_HEADER_LINE_HEIGHT (w
)
438 + window_text_bottom_y (w
)),
445 row
= MATRIX_FIRST_TEXT_ROW (w
->current_matrix
);
446 end_row
= MATRIX_BOTTOM_TEXT_ROW (w
->current_matrix
, w
);
447 max_y
= window_text_bottom_y (w
);
450 while ((n
< 0 || i
< n
)
451 && row
<= end_row
&& row
->enabled_p
452 && row
->y
+ row
->height
< max_y
)
455 if (row
> end_row
|| !row
->enabled_p
)
467 crop
= max (0, (row
->y
+ row
->height
) - max_y
);
468 return list4 (make_number (row
->height
+ min (0, row
->y
) - crop
),
470 make_number (row
->y
),
476 static struct window
*
477 decode_window (window
)
478 register Lisp_Object window
;
481 return XWINDOW (selected_window
);
483 CHECK_LIVE_WINDOW (window
);
484 return XWINDOW (window
);
487 static struct window
*
488 decode_any_window (window
)
489 register Lisp_Object window
;
492 return XWINDOW (selected_window
);
494 CHECK_WINDOW (window
);
495 return XWINDOW (window
);
498 DEFUN ("window-buffer", Fwindow_buffer
, Swindow_buffer
, 0, 1, 0,
499 doc
: /* Return the buffer that WINDOW is displaying.
500 WINDOW defaults to the selected window. */)
504 return decode_window (window
)->buffer
;
507 DEFUN ("window-height", Fwindow_height
, Swindow_height
, 0, 1, 0,
508 doc
: /* Return the number of lines in WINDOW.
509 WINDOW defaults to the selected window.
511 The return value includes WINDOW's mode line and header line, if any. */)
515 return decode_any_window (window
)->total_lines
;
518 DEFUN ("window-width", Fwindow_width
, Swindow_width
, 0, 1, 0,
519 doc
: /* Return the number of display columns in WINDOW.
520 WINDOW defaults to the selected window.
522 Note: The return value is the number of columns available for text in
523 WINDOW. If you want to find out how many columns WINDOW takes up, use
524 (let ((edges (window-edges))) (- (nth 2 edges) (nth 0 edges))). */)
528 return make_number (window_box_text_cols (decode_any_window (window
)));
531 DEFUN ("window-full-width-p", Fwindow_full_width_p
, Swindow_full_width_p
, 0, 1, 0,
532 doc
: /* Return t if WINDOW is as wide as its frame.
533 WINDOW defaults to the selected window. */)
537 return WINDOW_FULL_WIDTH_P (decode_any_window (window
)) ? Qt
: Qnil
;
540 DEFUN ("window-hscroll", Fwindow_hscroll
, Swindow_hscroll
, 0, 1, 0,
541 doc
: /* Return the number of columns by which WINDOW is scrolled from left margin.
542 WINDOW defaults to the selected window. */)
546 return decode_window (window
)->hscroll
;
549 DEFUN ("set-window-hscroll", Fset_window_hscroll
, Sset_window_hscroll
, 2, 2, 0,
550 doc
: /* Set number of columns WINDOW is scrolled from left margin to NCOL.
551 Return NCOL. NCOL should be zero or positive.
553 Note that if `automatic-hscrolling' is non-nil, you cannot scroll the
554 window so that the location of point moves off-window. */)
556 Lisp_Object window
, ncol
;
558 struct window
*w
= decode_window (window
);
562 hscroll
= max (0, XINT (ncol
));
564 /* Prevent redisplay shortcuts when changing the hscroll. */
565 if (XINT (w
->hscroll
) != hscroll
)
566 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
568 w
->hscroll
= make_number (hscroll
);
572 DEFUN ("window-redisplay-end-trigger", Fwindow_redisplay_end_trigger
,
573 Swindow_redisplay_end_trigger
, 0, 1, 0,
574 doc
: /* Return WINDOW's redisplay end trigger value.
575 WINDOW defaults to the selected window.
576 See `set-window-redisplay-end-trigger' for more information. */)
580 return decode_window (window
)->redisplay_end_trigger
;
583 DEFUN ("set-window-redisplay-end-trigger", Fset_window_redisplay_end_trigger
,
584 Sset_window_redisplay_end_trigger
, 2, 2, 0,
585 doc
: /* Set WINDOW's redisplay end trigger value to VALUE.
586 VALUE should be a buffer position (typically a marker) or nil.
587 If it is a buffer position, then if redisplay in WINDOW reaches a position
588 beyond VALUE, the functions in `redisplay-end-trigger-functions' are called
589 with two arguments: WINDOW, and the end trigger value.
590 Afterwards the end-trigger value is reset to nil. */)
592 register Lisp_Object window
, value
;
594 register struct window
*w
;
596 w
= decode_window (window
);
597 w
->redisplay_end_trigger
= value
;
601 DEFUN ("window-edges", Fwindow_edges
, Swindow_edges
, 0, 1, 0,
602 doc
: /* Return a list of the edge coordinates of WINDOW.
603 \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
604 RIGHT is one more than the rightmost column occupied by WINDOW,
605 and BOTTOM is one more than the bottommost row occupied by WINDOW.
606 The edges include the space used by the window's scroll bar,
607 display margins, fringes, header line, and mode line, if it has them.
608 To get the edges of the actual text area, use `window-inside-edges'. */)
612 register struct window
*w
= decode_any_window (window
);
614 return Fcons (make_number (WINDOW_LEFT_EDGE_COL (w
)),
615 Fcons (make_number (WINDOW_TOP_EDGE_LINE (w
)),
616 Fcons (make_number (WINDOW_RIGHT_EDGE_COL (w
)),
617 Fcons (make_number (WINDOW_BOTTOM_EDGE_LINE (w
)),
621 DEFUN ("window-pixel-edges", Fwindow_pixel_edges
, Swindow_pixel_edges
, 0, 1, 0,
622 doc
: /* Return a list of the edge pixel coordinates of WINDOW.
623 \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
624 RIGHT is one more than the rightmost x position occupied by WINDOW,
625 and BOTTOM is one more than the bottommost y position occupied by WINDOW.
626 The pixel edges include the space used by the window's scroll bar,
627 display margins, fringes, header line, and mode line, if it has them.
628 To get the edges of the actual text area, use `window-inside-pixel-edges'. */)
632 register struct window
*w
= decode_any_window (window
);
634 return Fcons (make_number (WINDOW_LEFT_EDGE_X (w
)),
635 Fcons (make_number (WINDOW_TOP_EDGE_Y (w
)),
636 Fcons (make_number (WINDOW_RIGHT_EDGE_X (w
)),
637 Fcons (make_number (WINDOW_BOTTOM_EDGE_Y (w
)),
641 DEFUN ("window-inside-edges", Fwindow_inside_edges
, Swindow_inside_edges
, 0, 1, 0,
642 doc
: /* Return a list of the edge coordinates of WINDOW.
643 \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
644 RIGHT is one more than the rightmost column used by text in WINDOW,
645 and BOTTOM is one more than the bottommost row used by text in WINDOW.
646 The inside edges do not include the space used by the window's scroll bar,
647 display margins, fringes, header line, and/or mode line. */)
651 register struct window
*w
= decode_any_window (window
);
653 return list4 (make_number (WINDOW_BOX_LEFT_EDGE_COL (w
)
654 + WINDOW_LEFT_MARGIN_COLS (w
)
655 + WINDOW_LEFT_FRINGE_COLS (w
)),
656 make_number (WINDOW_TOP_EDGE_LINE (w
)
657 + WINDOW_HEADER_LINE_LINES (w
)),
658 make_number (WINDOW_BOX_RIGHT_EDGE_COL (w
)
659 - WINDOW_RIGHT_MARGIN_COLS (w
)
660 - WINDOW_RIGHT_FRINGE_COLS (w
)),
661 make_number (WINDOW_BOTTOM_EDGE_LINE (w
)
662 - WINDOW_MODE_LINE_LINES (w
)));
665 DEFUN ("window-inside-pixel-edges", Fwindow_inside_pixel_edges
, Swindow_inside_pixel_edges
, 0, 1, 0,
666 doc
: /* Return a list of the edge pixel coordinates of WINDOW.
667 \(LEFT TOP RIGHT BOTTOM), all relative to 0, 0 at top left corner of frame.
668 RIGHT is one more than the rightmost x position used by text in WINDOW,
669 and BOTTOM is one more than the bottommost y position used by text in WINDOW.
670 The inside edges do not include the space used by the window's scroll bar,
671 display margins, fringes, header line, and/or mode line. */)
675 register struct window
*w
= decode_any_window (window
);
677 return list4 (make_number (WINDOW_BOX_LEFT_EDGE_X (w
)
678 + WINDOW_LEFT_MARGIN_WIDTH (w
)
679 + WINDOW_LEFT_FRINGE_WIDTH (w
)),
680 make_number (WINDOW_TOP_EDGE_Y (w
)
681 + WINDOW_HEADER_LINE_HEIGHT (w
)),
682 make_number (WINDOW_BOX_RIGHT_EDGE_X (w
)
683 - WINDOW_RIGHT_MARGIN_WIDTH (w
)
684 - WINDOW_RIGHT_FRINGE_WIDTH (w
)),
685 make_number (WINDOW_BOTTOM_EDGE_Y (w
)
686 - WINDOW_MODE_LINE_HEIGHT (w
)));
689 /* Test if the character at column *X, row *Y is within window W.
690 If it is not, return ON_NOTHING;
691 if it is in the window's text area,
692 set *x and *y to its location relative to the upper left corner
695 if it is on the window's modeline, return ON_MODE_LINE;
696 if it is on the border between the window and its right sibling,
697 return ON_VERTICAL_BORDER.
698 if it is on a scroll bar,
699 return ON_SCROLL_BAR.
700 if it is on the window's top line, return ON_HEADER_LINE;
701 if it is in left or right fringe of the window,
702 return ON_LEFT_FRINGE or ON_RIGHT_FRINGE, and convert *X and *Y
703 to window-relative coordinates;
704 if it is in the marginal area to the left/right of the window,
705 return ON_LEFT_MARGIN or ON_RIGHT_MARGIN, and convert *X and *Y
706 to window-relative coordinates.
708 X and Y are frame relative pixel coordinates. */
710 static enum window_part
711 coordinates_in_window (w
, x
, y
)
712 register struct window
*w
;
715 struct frame
*f
= XFRAME (WINDOW_FRAME (w
));
716 int left_x
, right_x
, top_y
, bottom_y
;
717 enum window_part part
;
718 int ux
= FRAME_COLUMN_WIDTH (f
);
719 int x0
= WINDOW_LEFT_EDGE_X (w
);
720 int x1
= WINDOW_RIGHT_EDGE_X (w
);
721 /* The width of the area where the vertical line can be dragged.
722 (Between mode lines for instance. */
723 int grabbable_width
= ux
;
724 int lmargin_width
, rmargin_width
, text_left
, text_right
;
726 /* In what's below, we subtract 1 when computing right_x because we
727 want the rightmost pixel, which is given by left_pixel+width-1. */
728 if (w
->pseudo_window_p
)
731 right_x
= WINDOW_TOTAL_WIDTH (w
) - 1;
732 top_y
= WINDOW_TOP_EDGE_Y (w
);
733 bottom_y
= WINDOW_BOTTOM_EDGE_Y (w
);
737 left_x
= WINDOW_BOX_LEFT_EDGE_X (w
);
738 right_x
= WINDOW_BOX_RIGHT_EDGE_X (w
) - 1;
739 top_y
= WINDOW_TOP_EDGE_Y (w
);
740 bottom_y
= WINDOW_BOTTOM_EDGE_Y (w
);
743 /* Outside any interesting row? */
744 if (*y
< top_y
|| *y
>= bottom_y
)
747 /* On the mode line or header line? If it's near the start of
748 the mode or header line of window that's has a horizontal
749 sibling, say it's on the vertical line. That's to be able
750 to resize windows horizontally in case we're using toolkit
753 if (WINDOW_WANTS_MODELINE_P (w
)
754 && *y
>= bottom_y
- CURRENT_MODE_LINE_HEIGHT (w
))
758 header_vertical_border_check
:
759 /* We're somewhere on the mode line. We consider the place
760 between mode lines of horizontally adjacent mode lines
761 as the vertical border. If scroll bars on the left,
762 return the right window. */
763 if (WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w
)
764 || WINDOW_RIGHTMOST_P (w
))
766 if (!WINDOW_LEFTMOST_P (w
) && eabs (*x
- x0
) < grabbable_width
)
768 /* Convert X and Y to window relative coordinates.
769 Vertical border is at the left edge of window. */
770 *x
= max (0, *x
- x0
);
772 return ON_VERTICAL_BORDER
;
777 if (eabs (*x
- x1
) < grabbable_width
)
779 /* Convert X and Y to window relative coordinates.
780 Vertical border is at the right edge of window. */
781 *x
= min (x1
, *x
) - x0
;
783 return ON_VERTICAL_BORDER
;
787 if (*x
< x0
|| *x
>= x1
)
790 /* Convert X and Y to window relative coordinates.
791 Mode line starts at left edge of window. */
797 if (WINDOW_WANTS_HEADER_LINE_P (w
)
798 && *y
< top_y
+ CURRENT_HEADER_LINE_HEIGHT (w
))
800 part
= ON_HEADER_LINE
;
801 goto header_vertical_border_check
;
804 if (*x
< x0
|| *x
>= x1
)
807 /* Outside any interesting column? */
808 if (*x
< left_x
|| *x
> right_x
)
811 return ON_SCROLL_BAR
;
814 lmargin_width
= window_box_width (w
, LEFT_MARGIN_AREA
);
815 rmargin_width
= window_box_width (w
, RIGHT_MARGIN_AREA
);
817 text_left
= window_box_left (w
, TEXT_AREA
);
818 text_right
= text_left
+ window_box_width (w
, TEXT_AREA
);
820 if (FRAME_WINDOW_P (f
))
822 if (!w
->pseudo_window_p
823 && !WINDOW_HAS_VERTICAL_SCROLL_BAR (w
)
824 && !WINDOW_RIGHTMOST_P (w
)
825 && (eabs (*x
- right_x
) < grabbable_width
))
827 /* Convert X and Y to window relative coordinates.
828 Vertical border is at the right edge of window. */
829 *x
= min (right_x
, *x
) - left_x
;
831 return ON_VERTICAL_BORDER
;
836 /* Need to say "*x > right_x" rather than >=, since on character
837 terminals, the vertical line's x coordinate is right_x. */
838 if (!w
->pseudo_window_p
839 && !WINDOW_RIGHTMOST_P (w
)
840 && *x
> right_x
- ux
)
842 /* On the border on the right side of the window? Assume that
843 this area begins at RIGHT_X minus a canonical char width. */
844 *x
= min (right_x
, *x
) - left_x
;
846 return ON_VERTICAL_BORDER
;
852 if (lmargin_width
> 0
853 && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
)
854 ? (*x
>= left_x
+ WINDOW_LEFT_FRINGE_WIDTH (w
))
855 : (*x
< left_x
+ lmargin_width
)))
858 if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
))
859 *x
-= WINDOW_LEFT_FRINGE_WIDTH (w
);
861 return ON_LEFT_MARGIN
;
864 /* Convert X and Y to window-relative pixel coordinates. */
867 return ON_LEFT_FRINGE
;
870 if (*x
>= text_right
)
872 if (rmargin_width
> 0
873 && (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
)
874 ? (*x
< right_x
- WINDOW_RIGHT_FRINGE_WIDTH (w
))
875 : (*x
>= right_x
- rmargin_width
)))
877 *x
-= right_x
- rmargin_width
;
878 if (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
))
879 *x
+= WINDOW_RIGHT_FRINGE_WIDTH (w
);
881 return ON_RIGHT_MARGIN
;
884 /* Convert X and Y to window-relative pixel coordinates. */
885 *x
-= left_x
+ WINDOW_LEFT_FRINGE_WIDTH (w
);
887 return ON_RIGHT_FRINGE
;
890 /* Everything special ruled out - must be on text area */
897 DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p
,
898 Scoordinates_in_window_p
, 2, 2, 0,
899 doc
: /* Return non-nil if COORDINATES are in WINDOW.
900 COORDINATES is a cons of the form (X . Y), X and Y being distances
901 measured in characters from the upper-left corner of the frame.
902 \(0 . 0) denotes the character in the upper left corner of the
904 If COORDINATES are in the text portion of WINDOW,
905 the coordinates relative to the window are returned.
906 If they are in the mode line of WINDOW, `mode-line' is returned.
907 If they are in the top mode line of WINDOW, `header-line' is returned.
908 If they are in the left fringe of WINDOW, `left-fringe' is returned.
909 If they are in the right fringe of WINDOW, `right-fringe' is returned.
910 If they are on the border between WINDOW and its right sibling,
911 `vertical-line' is returned.
912 If they are in the windows's left or right marginal areas, `left-margin'\n\
913 or `right-margin' is returned. */)
914 (coordinates
, window
)
915 register Lisp_Object coordinates
, window
;
922 CHECK_WINDOW (window
);
923 w
= XWINDOW (window
);
924 f
= XFRAME (w
->frame
);
925 CHECK_CONS (coordinates
);
926 lx
= Fcar (coordinates
);
927 ly
= Fcdr (coordinates
);
928 CHECK_NUMBER_OR_FLOAT (lx
);
929 CHECK_NUMBER_OR_FLOAT (ly
);
930 x
= FRAME_PIXEL_X_FROM_CANON_X (f
, lx
) + FRAME_INTERNAL_BORDER_WIDTH (f
);
931 y
= FRAME_PIXEL_Y_FROM_CANON_Y (f
, ly
) + FRAME_INTERNAL_BORDER_WIDTH (f
);
933 switch (coordinates_in_window (w
, &x
, &y
))
939 /* X and Y are now window relative pixel coordinates. Convert
940 them to canonical char units before returning them. */
941 return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f
, x
),
942 FRAME_CANON_Y_FROM_PIXEL_Y (f
, y
));
947 case ON_VERTICAL_BORDER
:
948 return Qvertical_line
;
956 case ON_RIGHT_FRINGE
:
957 return Qright_fringe
;
962 case ON_RIGHT_MARGIN
:
963 return Qright_margin
;
966 /* Historically we are supposed to return nil in this case. */
975 /* Callback for foreach_window, used in window_from_coordinates.
976 Check if window W contains coordinates specified by USER_DATA which
977 is actually a pointer to a struct check_window_data CW.
979 Check if window W contains coordinates *CW->x and *CW->y. If it
980 does, return W in *CW->window, as Lisp_Object, and return in
981 *CW->part the part of the window under coordinates *X,*Y. Return
982 zero from this function to stop iterating over windows. */
984 struct check_window_data
988 enum window_part
*part
;
992 check_window_containing (w
, user_data
)
996 struct check_window_data
*cw
= (struct check_window_data
*) user_data
;
997 enum window_part found
;
1000 found
= coordinates_in_window (w
, cw
->x
, cw
->y
);
1001 if (found
!= ON_NOTHING
)
1004 XSETWINDOW (*cw
->window
, w
);
1012 /* Find the window containing frame-relative pixel position X/Y and
1013 return it as a Lisp_Object.
1015 If X, Y is on one of the window's special `window_part' elements,
1016 set *PART to the id of that element, and return X and Y converted
1017 to window relative coordinates in WX and WY.
1019 If there is no window under X, Y return nil and leave *PART
1020 unmodified. TOOL_BAR_P non-zero means detect tool-bar windows.
1022 This function was previously implemented with a loop cycling over
1023 windows with Fnext_window, and starting with the frame's selected
1024 window. It turned out that this doesn't work with an
1025 implementation of next_window using Vwindow_list, because
1026 FRAME_SELECTED_WINDOW (F) is not always contained in the window
1027 tree of F when this function is called asynchronously from
1028 note_mouse_highlight. The original loop didn't terminate in this
1032 window_from_coordinates (f
, x
, y
, part
, wx
, wy
, tool_bar_p
)
1035 enum window_part
*part
;
1040 struct check_window_data cw
;
1041 enum window_part dummy
;
1047 cw
.window
= &window
, cw
.x
= &x
, cw
.y
= &y
; cw
.part
= part
;
1048 foreach_window (f
, check_window_containing
, &cw
);
1050 /* If not found above, see if it's in the tool bar window, if a tool
1054 && WINDOWP (f
->tool_bar_window
)
1055 && WINDOW_TOTAL_LINES (XWINDOW (f
->tool_bar_window
)) > 0
1056 && (coordinates_in_window (XWINDOW (f
->tool_bar_window
), &x
, &y
)
1060 window
= f
->tool_bar_window
;
1069 DEFUN ("window-at", Fwindow_at
, Swindow_at
, 2, 3, 0,
1070 doc
: /* Return window containing coordinates X and Y on FRAME.
1071 If omitted, FRAME defaults to the currently selected frame.
1072 The top left corner of the frame is considered to be row 0,
1075 Lisp_Object x
, y
, frame
;
1080 frame
= selected_frame
;
1081 CHECK_LIVE_FRAME (frame
);
1084 /* Check that arguments are integers or floats. */
1085 CHECK_NUMBER_OR_FLOAT (x
);
1086 CHECK_NUMBER_OR_FLOAT (y
);
1088 return window_from_coordinates (f
,
1089 (FRAME_PIXEL_X_FROM_CANON_X (f
, x
)
1090 + FRAME_INTERNAL_BORDER_WIDTH (f
)),
1091 (FRAME_PIXEL_Y_FROM_CANON_Y (f
, y
)
1092 + FRAME_INTERNAL_BORDER_WIDTH (f
)),
1096 DEFUN ("window-point", Fwindow_point
, Swindow_point
, 0, 1, 0,
1097 doc
: /* Return current value of point in WINDOW.
1098 WINDOW defaults to the selected window.
1100 For a nonselected window, this is the value point would have
1101 if that window were selected.
1103 Note that, when WINDOW is the selected window and its buffer
1104 is also currently selected, the value returned is the same as (point).
1105 It would be more strictly correct to return the `top-level' value
1106 of point, outside of any save-excursion forms.
1107 But that is hard to define. */)
1111 register struct window
*w
= decode_window (window
);
1113 if (w
== XWINDOW (selected_window
)
1114 && current_buffer
== XBUFFER (w
->buffer
))
1116 return Fmarker_position (w
->pointm
);
1119 DEFUN ("window-start", Fwindow_start
, Swindow_start
, 0, 1, 0,
1120 doc
: /* Return position at which display currently starts in WINDOW.
1121 WINDOW defaults to the selected window.
1122 This is updated by redisplay or by calling `set-window-start'. */)
1126 return Fmarker_position (decode_window (window
)->start
);
1129 /* This is text temporarily removed from the doc string below.
1131 This function returns nil if the position is not currently known.
1132 That happens when redisplay is preempted and doesn't finish.
1133 If in that case you want to compute where the end of the window would
1134 have been if redisplay had finished, do this:
1136 (goto-char (window-start window))
1137 (vertical-motion (1- (window-height window)) window)
1140 DEFUN ("window-end", Fwindow_end
, Swindow_end
, 0, 2, 0,
1141 doc
: /* Return position at which display currently ends in WINDOW.
1142 WINDOW defaults to the selected window.
1143 This is updated by redisplay, when it runs to completion.
1144 Simply changing the buffer text or setting `window-start'
1145 does not update this value.
1146 Return nil if there is no recorded value. \(This can happen if the
1147 last redisplay of WINDOW was preempted, and did not finish.)
1148 If UPDATE is non-nil, compute the up-to-date position
1149 if it isn't already recorded. */)
1151 Lisp_Object window
, update
;
1154 struct window
*w
= decode_window (window
);
1162 #if 0 /* This change broke some things. We should make it later. */
1163 /* If we don't know the end position, return nil.
1164 The user can compute it with vertical-motion if he wants to.
1165 It would be nicer to do it automatically,
1166 but that's so slow that it would probably bother people. */
1167 if (NILP (w
->window_end_valid
))
1172 && ! (! NILP (w
->window_end_valid
)
1173 && XFASTINT (w
->last_modified
) >= BUF_MODIFF (b
)
1174 && XFASTINT (w
->last_overlay_modified
) >= BUF_OVERLAY_MODIFF (b
))
1177 struct text_pos startp
;
1179 struct buffer
*old_buffer
= NULL
;
1181 /* Cannot use Fvertical_motion because that function doesn't
1182 cope with variable-height lines. */
1183 if (b
!= current_buffer
)
1185 old_buffer
= current_buffer
;
1186 set_buffer_internal (b
);
1189 /* In case W->start is out of the range, use something
1190 reasonable. This situation occurred when loading a file with
1191 `-l' containing a call to `rmail' with subsequent other
1192 commands. At the end, W->start happened to be BEG, while
1193 rmail had already narrowed the buffer. */
1194 if (XMARKER (w
->start
)->charpos
< BEGV
)
1195 SET_TEXT_POS (startp
, BEGV
, BEGV_BYTE
);
1196 else if (XMARKER (w
->start
)->charpos
> ZV
)
1197 SET_TEXT_POS (startp
, ZV
, ZV_BYTE
);
1199 SET_TEXT_POS_FROM_MARKER (startp
, w
->start
);
1201 start_display (&it
, w
, startp
);
1202 move_it_vertically (&it
, window_box_height (w
));
1203 if (it
.current_y
< it
.last_visible_y
)
1204 move_it_past_eol (&it
);
1205 value
= make_number (IT_CHARPOS (it
));
1208 set_buffer_internal (old_buffer
);
1211 XSETINT (value
, BUF_Z (b
) - XFASTINT (w
->window_end_pos
));
1216 DEFUN ("set-window-point", Fset_window_point
, Sset_window_point
, 2, 2, 0,
1217 doc
: /* Make point value in WINDOW be at position POS in WINDOW's buffer.
1220 Lisp_Object window
, pos
;
1222 register struct window
*w
= decode_window (window
);
1224 CHECK_NUMBER_COERCE_MARKER (pos
);
1225 if (w
== XWINDOW (selected_window
)
1226 && XBUFFER (w
->buffer
) == current_buffer
)
1229 set_marker_restricted (w
->pointm
, pos
, w
->buffer
);
1231 /* We have to make sure that redisplay updates the window to show
1232 the new value of point. */
1233 if (!EQ (window
, selected_window
))
1234 ++windows_or_buffers_changed
;
1239 DEFUN ("set-window-start", Fset_window_start
, Sset_window_start
, 2, 3, 0,
1240 doc
: /* Make display in WINDOW start at position POS in WINDOW's buffer.
1241 WINDOW defaults to the selected window. Return POS.
1242 Optional third arg NOFORCE non-nil inhibits next redisplay from
1243 overriding motion of point in order to display at this exact start. */)
1244 (window
, pos
, noforce
)
1245 Lisp_Object window
, pos
, noforce
;
1247 register struct window
*w
= decode_window (window
);
1249 CHECK_NUMBER_COERCE_MARKER (pos
);
1250 set_marker_restricted (w
->start
, pos
, w
->buffer
);
1251 /* this is not right, but much easier than doing what is right. */
1252 w
->start_at_line_beg
= Qnil
;
1254 w
->force_start
= Qt
;
1255 w
->update_mode_line
= Qt
;
1256 XSETFASTINT (w
->last_modified
, 0);
1257 XSETFASTINT (w
->last_overlay_modified
, 0);
1258 if (!EQ (window
, selected_window
))
1259 windows_or_buffers_changed
++;
1265 DEFUN ("window-dedicated-p", Fwindow_dedicated_p
, Swindow_dedicated_p
,
1267 doc
: /* Return non-nil when WINDOW is dedicated to its buffer.
1268 More precisely, return the value assigned by the last call of
1269 `set-window-dedicated-p' for WINDOW. Return nil if that function was
1270 never called with WINDOW as its argument, or the value set by that
1271 function was internally reset since its last call. WINDOW defaults to
1272 the selected window.
1274 When a window is dedicated to its buffer, `display-buffer' will refrain
1275 from displaying another buffer in it. `get-lru-window' and
1276 `get-largest-window' treat dedicated windows specially.
1277 `delete-windows-on', `replace-buffer-in-windows', `quit-window' and
1278 `kill-buffer' can delete a dedicated window and the containing frame.
1280 Functions like `set-window-buffer' may change the buffer displayed by a
1281 window, unless that window is "strongly" dedicated to its buffer, that
1282 is the value returned by `window-dedicated-p' is t. */)
1286 return decode_window (window
)->dedicated
;
1289 DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p
,
1290 Sset_window_dedicated_p
, 2, 2, 0,
1291 doc
: /* Mark WINDOW as dedicated according to FLAG.
1292 WINDOW defaults to the selected window. FLAG non-nil means mark WINDOW
1293 as dedicated to its buffer. FLAG nil means mark WINDOW as non-dedicated.
1296 When a window is dedicated to its buffer, `display-buffer' will refrain
1297 from displaying another buffer in it. `get-lru-window' and
1298 `get-largest-window' treat dedicated windows specially.
1299 `delete-windows-on', `replace-buffer-in-windows', `quit-window' and
1300 `kill-buffer' can delete a dedicated window and the containing
1303 As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to
1304 its buffer. Functions like `set-window-buffer' may change the buffer
1305 displayed by a window, unless that window is strongly dedicated to its
1306 buffer. If and when `set-window-buffer' displays another buffer in a
1307 window, it also makes sure that the window is not marked as dedicated. */)
1309 Lisp_Object window
, flag
;
1311 register struct window
*w
= decode_window (window
);
1313 w
->dedicated
= flag
;
1314 return w
->dedicated
;
1318 DEFUN ("window-parameters", Fwindow_parameters
, Swindow_parameters
,
1320 doc
: /* Return the parameters of WINDOW and their values.
1321 WINDOW defaults to the selected window. The return value is a list of
1322 elements of the form (PARAMETER . VALUE). */)
1326 return Fcopy_alist (decode_window (window
)->window_parameters
);
1329 DEFUN ("window-parameter", Fwindow_parameter
, Swindow_parameter
,
1331 doc
: /* Return WINDOW's value for PARAMETER.
1332 WINDOW defaults to the selected window. */)
1334 Lisp_Object window
, parameter
;
1338 result
= Fassq (parameter
, decode_window (window
)->window_parameters
);
1339 return CDR_SAFE (result
);
1342 DEFUN ("set-window-parameter", Fset_window_parameter
,
1343 Sset_window_parameter
, 3, 3, 0,
1344 doc
: /* Set WINDOW's value of PARAMETER to VALUE.
1345 WINDOW defaults to the selected window. Return VALUE. */)
1346 (window
, parameter
, value
)
1347 Lisp_Object window
, parameter
, value
;
1349 register struct window
*w
= decode_window (window
);
1350 Lisp_Object old_alist_elt
;
1352 old_alist_elt
= Fassq (parameter
, w
->window_parameters
);
1353 if (NILP (old_alist_elt
))
1354 w
->window_parameters
= Fcons (Fcons (parameter
, value
), w
->window_parameters
);
1356 Fsetcdr (old_alist_elt
, value
);
1361 DEFUN ("window-display-table", Fwindow_display_table
, Swindow_display_table
,
1363 doc
: /* Return the display-table that WINDOW is using.
1364 WINDOW defaults to the selected window. */)
1368 return decode_window (window
)->display_table
;
1371 /* Get the display table for use on window W. This is either W's
1372 display table or W's buffer's display table. Ignore the specified
1373 tables if they are not valid; if no valid table is specified,
1376 struct Lisp_Char_Table
*
1377 window_display_table (w
)
1380 struct Lisp_Char_Table
*dp
= NULL
;
1382 if (DISP_TABLE_P (w
->display_table
))
1383 dp
= XCHAR_TABLE (w
->display_table
);
1384 else if (BUFFERP (w
->buffer
))
1386 struct buffer
*b
= XBUFFER (w
->buffer
);
1388 if (DISP_TABLE_P (b
->display_table
))
1389 dp
= XCHAR_TABLE (b
->display_table
);
1390 else if (DISP_TABLE_P (Vstandard_display_table
))
1391 dp
= XCHAR_TABLE (Vstandard_display_table
);
1397 DEFUN ("set-window-display-table", Fset_window_display_table
, Sset_window_display_table
, 2, 2, 0,
1398 doc
: /* Set WINDOW's display-table to TABLE. */)
1400 register Lisp_Object window
, table
;
1402 register struct window
*w
;
1404 w
= decode_window (window
);
1405 w
->display_table
= table
;
1409 /* Record info on buffer window w is displaying
1410 when it is about to cease to display that buffer. */
1413 register struct window
*w
;
1420 if (b
!= XMARKER (w
->pointm
)->buffer
)
1424 if (w
== XWINDOW (selected_window
)
1425 || ! EQ (buf
, XWINDOW (selected_window
)->buffer
))
1426 /* Do this except when the selected window's buffer
1427 is being removed from some other window. */
1429 /* last_window_start records the start position that this buffer
1430 had in the last window to be disconnected from it.
1431 Now that this statement is unconditional,
1432 it is possible for the buffer to be displayed in the
1433 selected window, while last_window_start reflects another
1434 window which was recently showing the same buffer.
1435 Some people might say that might be a good thing. Let's see. */
1436 b
->last_window_start
= marker_position (w
->start
);
1438 /* Point in the selected window's buffer
1439 is actually stored in that buffer, and the window's pointm isn't used.
1440 So don't clobber point in that buffer. */
1441 if (! EQ (buf
, XWINDOW (selected_window
)->buffer
)
1442 /* This line helps to fix Horsley's testbug.el bug. */
1443 && !(WINDOWP (b
->last_selected_window
)
1444 && w
!= XWINDOW (b
->last_selected_window
)
1445 && EQ (buf
, XWINDOW (b
->last_selected_window
)->buffer
)))
1446 temp_set_point_both (b
,
1447 clip_to_bounds (BUF_BEGV (b
),
1448 XMARKER (w
->pointm
)->charpos
,
1450 clip_to_bounds (BUF_BEGV_BYTE (b
),
1451 marker_byte_position (w
->pointm
),
1454 if (WINDOWP (b
->last_selected_window
)
1455 && w
== XWINDOW (b
->last_selected_window
))
1456 b
->last_selected_window
= Qnil
;
1459 /* Put replacement into the window structure in place of old. */
1461 replace_window (old
, replacement
)
1462 Lisp_Object old
, replacement
;
1464 register Lisp_Object tem
;
1465 register struct window
*o
= XWINDOW (old
), *p
= XWINDOW (replacement
);
1467 /* If OLD is its frame's root_window, then replacement is the new
1468 root_window for that frame. */
1470 if (EQ (old
, FRAME_ROOT_WINDOW (XFRAME (o
->frame
))))
1471 FRAME_ROOT_WINDOW (XFRAME (o
->frame
)) = replacement
;
1473 p
->left_col
= o
->left_col
;
1474 p
->top_line
= o
->top_line
;
1475 p
->total_cols
= o
->total_cols
;
1476 p
->total_lines
= o
->total_lines
;
1477 p
->desired_matrix
= p
->current_matrix
= 0;
1479 bzero (&p
->cursor
, sizeof (p
->cursor
));
1480 bzero (&p
->last_cursor
, sizeof (p
->last_cursor
));
1481 bzero (&p
->phys_cursor
, sizeof (p
->phys_cursor
));
1482 p
->phys_cursor_type
= -1;
1483 p
->phys_cursor_width
= -1;
1484 p
->must_be_updated_p
= 0;
1485 p
->pseudo_window_p
= 0;
1486 XSETFASTINT (p
->window_end_vpos
, 0);
1487 XSETFASTINT (p
->window_end_pos
, 0);
1488 p
->window_end_valid
= Qnil
;
1489 p
->frozen_window_start_p
= 0;
1490 p
->orig_top_line
= p
->orig_total_lines
= Qnil
;
1492 p
->next
= tem
= o
->next
;
1494 XWINDOW (tem
)->prev
= replacement
;
1496 p
->prev
= tem
= o
->prev
;
1498 XWINDOW (tem
)->next
= replacement
;
1500 p
->parent
= tem
= o
->parent
;
1503 if (EQ (XWINDOW (tem
)->vchild
, old
))
1504 XWINDOW (tem
)->vchild
= replacement
;
1505 if (EQ (XWINDOW (tem
)->hchild
, old
))
1506 XWINDOW (tem
)->hchild
= replacement
;
1509 /*** Here, if replacement is a vertical combination
1510 and so is its new parent, we should make replacement's
1511 children be children of that parent instead. ***/
1514 DEFUN ("delete-window", Fdelete_window
, Sdelete_window
, 0, 1, "",
1515 doc
: /* Remove WINDOW from its frame.
1516 WINDOW defaults to the selected window. Return nil.
1517 Signal an error when WINDOW is the only window on its frame. */)
1519 register Lisp_Object window
;
1523 window
= selected_window
;
1524 f
= XFRAME (WINDOW_FRAME (XWINDOW (window
)));
1525 delete_window (window
);
1527 run_window_configuration_change_hook (f
);
1533 delete_window (window
)
1534 register Lisp_Object window
;
1536 register Lisp_Object tem
, parent
, sib
;
1537 register struct window
*p
;
1538 register struct window
*par
;
1541 /* Because this function is called by other C code on non-leaf
1542 windows, the CHECK_LIVE_WINDOW macro would choke inappropriately,
1543 so we can't decode_window here. */
1544 CHECK_WINDOW (window
);
1545 p
= XWINDOW (window
);
1547 /* It's a no-op to delete an already-deleted window. */
1548 if (NILP (p
->buffer
)
1550 && NILP (p
->vchild
))
1555 error ("Attempt to delete minibuffer or sole ordinary window");
1556 par
= XWINDOW (parent
);
1558 windows_or_buffers_changed
++;
1559 Vwindow_list
= Qnil
;
1560 f
= XFRAME (WINDOW_FRAME (p
));
1561 FRAME_WINDOW_SIZES_CHANGED (f
) = 1;
1563 /* Are we trying to delete any frame's selected window? */
1565 Lisp_Object swindow
, pwindow
;
1567 /* See if the frame's selected window is either WINDOW
1568 or any subwindow of it, by finding all that window's parents
1569 and comparing each one with WINDOW. */
1570 swindow
= FRAME_SELECTED_WINDOW (f
);
1575 while (!NILP (pwindow
))
1577 if (EQ (window
, pwindow
))
1579 pwindow
= XWINDOW (pwindow
)->parent
;
1582 /* If the window being deleted is not a parent of SWINDOW,
1583 then SWINDOW is ok as the new selected window. */
1584 if (!EQ (window
, pwindow
))
1586 /* Otherwise, try another window for SWINDOW. */
1587 swindow
= Fnext_window (swindow
, Qlambda
, Qnil
);
1589 /* If we get back to the frame's selected window,
1590 it means there was no acceptable alternative,
1591 so we cannot delete. */
1592 if (EQ (swindow
, FRAME_SELECTED_WINDOW (f
)))
1593 error ("Cannot delete window");
1596 /* If we need to change SWINDOW, do it. */
1597 if (! EQ (swindow
, FRAME_SELECTED_WINDOW (f
)))
1599 /* If we're about to delete the selected window on the
1600 selected frame, then we should use Fselect_window to select
1601 the new window. On the other hand, if we're about to
1602 delete the selected window on any other frame, we shouldn't do
1603 anything but set the frame's selected_window slot. */
1604 if (EQ (FRAME_SELECTED_WINDOW (f
), selected_window
))
1605 Fselect_window (swindow
, Qnil
);
1607 FRAME_SELECTED_WINDOW (f
) = swindow
;
1611 /* Now we know we can delete this one. */
1612 window_deletion_count
++;
1615 /* tem is null for dummy parent windows
1616 (which have inferiors but not any contents themselves) */
1620 unchain_marker (XMARKER (p
->pointm
));
1621 unchain_marker (XMARKER (p
->start
));
1624 /* Free window glyph matrices. It is sure that they are allocated
1625 again when ADJUST_GLYPHS is called. Block input so that expose
1626 events and other events that access glyph matrices are not
1627 processed while we are changing them. */
1629 free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (f
)));
1633 XWINDOW (tem
)->prev
= p
->prev
;
1637 XWINDOW (tem
)->next
= p
->next
;
1639 if (EQ (window
, par
->hchild
))
1640 par
->hchild
= p
->next
;
1641 if (EQ (window
, par
->vchild
))
1642 par
->vchild
= p
->next
;
1644 /* Find one of our siblings to give our space to. */
1648 /* If p gives its space to its next sibling, that sibling needs
1649 to have its top/left side pulled back to where p's is.
1650 set_window_{height,width} will re-position the sibling's
1653 XWINDOW (sib
)->top_line
= p
->top_line
;
1654 XWINDOW (sib
)->left_col
= p
->left_col
;
1657 /* Stretch that sibling. */
1658 if (!NILP (par
->vchild
))
1659 set_window_height (sib
,
1660 XFASTINT (XWINDOW (sib
)->total_lines
) + XFASTINT (p
->total_lines
),
1662 if (!NILP (par
->hchild
))
1663 set_window_width (sib
,
1664 XFASTINT (XWINDOW (sib
)->total_cols
) + XFASTINT (p
->total_cols
),
1667 /* If parent now has only one child,
1668 put the child into the parent's place. */
1672 if (NILP (XWINDOW (tem
)->next
)) {
1673 replace_window (parent
, tem
);
1674 par
= XWINDOW (tem
);
1677 /* Since we may be deleting combination windows, we must make sure that
1678 not only p but all its children have been marked as deleted. */
1679 if (! NILP (p
->hchild
))
1680 delete_all_subwindows (XWINDOW (p
->hchild
));
1681 else if (! NILP (p
->vchild
))
1682 delete_all_subwindows (XWINDOW (p
->vchild
));
1684 /* Mark this window as deleted. */
1685 p
->buffer
= p
->hchild
= p
->vchild
= Qnil
;
1687 if (! NILP (par
->parent
))
1688 par
= XWINDOW (par
->parent
);
1690 /* Check if we have a v/hchild with a v/hchild. In that case remove
1693 if (! NILP (par
->vchild
) && ! NILP (XWINDOW (par
->vchild
)->vchild
))
1695 p
= XWINDOW (par
->vchild
);
1696 par
->vchild
= p
->vchild
;
1699 else if (! NILP (par
->hchild
) && ! NILP (XWINDOW (par
->hchild
)->hchild
))
1701 p
= XWINDOW (par
->hchild
);
1702 par
->hchild
= p
->hchild
;
1710 while (! NILP (tem
)) {
1711 XWINDOW (tem
)->parent
= p
->parent
;
1712 if (NILP (XWINDOW (tem
)->next
))
1714 tem
= XWINDOW (tem
)->next
;
1717 /* The next of the v/hchild we are removing is now the next of the
1718 last child for the v/hchild:
1719 Before v/hchild -> v/hchild -> next1 -> next2
1722 After: v/hchild -> next1 -> next2 -> next3
1724 XWINDOW (tem
)->next
= p
->next
;
1725 if (! NILP (p
->next
))
1726 XWINDOW (p
->next
)->prev
= tem
;
1728 p
->next
= p
->prev
= p
->vchild
= p
->hchild
= p
->buffer
= Qnil
;
1732 /* Adjust glyph matrices. */
1739 /***********************************************************************
1741 ***********************************************************************/
1743 /* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object
1744 pointer. This is a callback function for foreach_window, used in
1745 function window_list. */
1748 add_window_to_list (w
, user_data
)
1752 Lisp_Object
*list
= (Lisp_Object
*) user_data
;
1754 XSETWINDOW (window
, w
);
1755 *list
= Fcons (window
, *list
);
1760 /* Return a list of all windows, for use by next_window. If
1761 Vwindow_list is a list, return that list. Otherwise, build a new
1762 list, cache it in Vwindow_list, and return that. */
1767 if (!CONSP (Vwindow_list
))
1771 Vwindow_list
= Qnil
;
1772 for (tail
= Vframe_list
; CONSP (tail
); tail
= XCDR (tail
))
1774 Lisp_Object args
[2];
1776 /* We are visiting windows in canonical order, and add
1777 new windows at the front of args[1], which means we
1778 have to reverse this list at the end. */
1780 foreach_window (XFRAME (XCAR (tail
)), add_window_to_list
, &args
[1]);
1781 args
[0] = Vwindow_list
;
1782 args
[1] = Fnreverse (args
[1]);
1783 Vwindow_list
= Fnconc (2, args
);
1787 return Vwindow_list
;
1791 /* Value is non-zero if WINDOW satisfies the constraints given by
1792 OWINDOW, MINIBUF and ALL_FRAMES.
1794 MINIBUF t means WINDOW may be minibuffer windows.
1795 `lambda' means WINDOW may not be a minibuffer window.
1796 a window means a specific minibuffer window
1798 ALL_FRAMES t means search all frames,
1799 nil means search just current frame,
1800 `visible' means search just visible frames,
1801 0 means search visible and iconified frames,
1802 a window means search the frame that window belongs to,
1803 a frame means consider windows on that frame, only. */
1806 candidate_window_p (window
, owindow
, minibuf
, all_frames
)
1807 Lisp_Object window
, owindow
, minibuf
, all_frames
;
1809 struct window
*w
= XWINDOW (window
);
1810 struct frame
*f
= XFRAME (w
->frame
);
1811 int candidate_p
= 1;
1813 if (!BUFFERP (w
->buffer
))
1815 else if (MINI_WINDOW_P (w
)
1816 && (EQ (minibuf
, Qlambda
)
1817 || (WINDOWP (minibuf
) && !EQ (minibuf
, window
))))
1819 /* If MINIBUF is `lambda' don't consider any mini-windows.
1820 If it is a window, consider only that one. */
1823 else if (EQ (all_frames
, Qt
))
1825 else if (NILP (all_frames
))
1827 xassert (WINDOWP (owindow
));
1828 candidate_p
= EQ (w
->frame
, XWINDOW (owindow
)->frame
);
1830 else if (EQ (all_frames
, Qvisible
))
1832 FRAME_SAMPLE_VISIBILITY (f
);
1833 candidate_p
= FRAME_VISIBLE_P (f
)
1834 && (FRAME_TERMINAL (XFRAME (w
->frame
))
1835 == FRAME_TERMINAL (XFRAME (selected_frame
)));
1838 else if (INTEGERP (all_frames
) && XINT (all_frames
) == 0)
1840 FRAME_SAMPLE_VISIBILITY (f
);
1841 candidate_p
= (FRAME_VISIBLE_P (f
) || FRAME_ICONIFIED_P (f
)
1842 #ifdef HAVE_X_WINDOWS
1843 /* Yuck!! If we've just created the frame and the
1844 window-manager requested the user to place it
1845 manually, the window may still not be considered
1846 `visible'. I'd argue it should be at least
1847 something like `iconified', but don't know how to do
1849 || (FRAME_X_P (f
) && f
->output_data
.x
->asked_for_visible
1850 && !f
->output_data
.x
->has_been_visible
)
1853 && (FRAME_TERMINAL (XFRAME (w
->frame
))
1854 == FRAME_TERMINAL (XFRAME (selected_frame
)));
1856 else if (WINDOWP (all_frames
))
1857 candidate_p
= (EQ (FRAME_MINIBUF_WINDOW (f
), all_frames
)
1858 || EQ (XWINDOW (all_frames
)->frame
, w
->frame
)
1859 || EQ (XWINDOW (all_frames
)->frame
, FRAME_FOCUS_FRAME (f
)));
1860 else if (FRAMEP (all_frames
))
1861 candidate_p
= EQ (all_frames
, w
->frame
);
1867 /* Decode arguments as allowed by Fnext_window, Fprevious_window, and
1868 Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and
1872 decode_next_window_args (window
, minibuf
, all_frames
)
1873 Lisp_Object
*window
, *minibuf
, *all_frames
;
1876 *window
= selected_window
;
1878 CHECK_LIVE_WINDOW (*window
);
1880 /* MINIBUF nil may or may not include minibuffers. Decide if it
1882 if (NILP (*minibuf
))
1883 *minibuf
= minibuf_level
? minibuf_window
: Qlambda
;
1884 else if (!EQ (*minibuf
, Qt
))
1887 /* Now *MINIBUF can be t => count all minibuffer windows, `lambda'
1888 => count none of them, or a specific minibuffer window (the
1889 active one) to count. */
1891 /* ALL_FRAMES nil doesn't specify which frames to include. */
1892 if (NILP (*all_frames
))
1893 *all_frames
= (!EQ (*minibuf
, Qlambda
)
1894 ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window
)->frame
))
1896 else if (EQ (*all_frames
, Qvisible
))
1898 else if (EQ (*all_frames
, make_number (0)))
1900 else if (FRAMEP (*all_frames
))
1902 else if (!EQ (*all_frames
, Qt
))
1905 /* Now *ALL_FRAMES is t meaning search all frames, nil meaning
1906 search just current frame, `visible' meaning search just visible
1907 frames, 0 meaning search visible and iconified frames, or a
1908 window, meaning search the frame that window belongs to, or a
1909 frame, meaning consider windows on that frame, only. */
1913 /* Return the next or previous window of WINDOW in canonical ordering
1914 of windows. NEXT_P non-zero means return the next window. See the
1915 documentation string of next-window for the meaning of MINIBUF and
1919 next_window (window
, minibuf
, all_frames
, next_p
)
1920 Lisp_Object window
, minibuf
, all_frames
;
1923 decode_next_window_args (&window
, &minibuf
, &all_frames
);
1925 /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just
1926 return the first window on the frame. */
1927 if (FRAMEP (all_frames
)
1928 && !EQ (all_frames
, XWINDOW (window
)->frame
))
1929 return Fframe_first_window (all_frames
);
1935 /* Find WINDOW in the list of all windows. */
1936 list
= Fmemq (window
, window_list ());
1938 /* Scan forward from WINDOW to the end of the window list. */
1940 for (list
= XCDR (list
); CONSP (list
); list
= XCDR (list
))
1941 if (candidate_window_p (XCAR (list
), window
, minibuf
, all_frames
))
1944 /* Scan from the start of the window list up to WINDOW. */
1946 for (list
= Vwindow_list
;
1947 CONSP (list
) && !EQ (XCAR (list
), window
);
1949 if (candidate_window_p (XCAR (list
), window
, minibuf
, all_frames
))
1953 window
= XCAR (list
);
1957 Lisp_Object candidate
, list
;
1959 /* Scan through the list of windows for candidates. If there are
1960 candidate windows in front of WINDOW, the last one of these
1961 is the one we want. If there are candidates following WINDOW
1962 in the list, again the last one of these is the one we want. */
1964 for (list
= window_list (); CONSP (list
); list
= XCDR (list
))
1966 if (EQ (XCAR (list
), window
))
1968 if (WINDOWP (candidate
))
1971 else if (candidate_window_p (XCAR (list
), window
, minibuf
,
1973 candidate
= XCAR (list
);
1976 if (WINDOWP (candidate
))
1984 DEFUN ("next-window", Fnext_window
, Snext_window
, 0, 3, 0,
1985 doc
: /* Return next window after WINDOW in canonical ordering of windows.
1986 If omitted, WINDOW defaults to the selected window.
1988 Optional second arg MINIBUF t means count the minibuffer window even
1989 if not active. MINIBUF nil or omitted means count the minibuffer iff
1990 it is active. MINIBUF neither t nor nil means not to count the
1991 minibuffer even if it is active.
1993 Several frames may share a single minibuffer; if the minibuffer
1994 counts, all windows on all frames that share that minibuffer count
1995 too. Therefore, `next-window' can be used to iterate through the
1996 set of windows even when the minibuffer is on another frame. If the
1997 minibuffer does not count, only windows from WINDOW's frame count.
1999 Optional third arg ALL-FRAMES t means include windows on all frames.
2000 ALL-FRAMES nil or omitted means cycle within the frames as specified
2001 above. ALL-FRAMES = `visible' means include windows on all visible frames.
2002 ALL-FRAMES = 0 means include windows on all visible and iconified frames.
2003 If ALL-FRAMES is a frame, restrict search to windows on that frame.
2004 Anything else means restrict to WINDOW's frame.
2006 If you use consistent values for MINIBUF and ALL-FRAMES, you can use
2007 `next-window' to iterate through the entire cycle of acceptable
2008 windows, eventually ending up back at the window you started with.
2009 `previous-window' traverses the same cycle, in the reverse order. */)
2010 (window
, minibuf
, all_frames
)
2011 Lisp_Object window
, minibuf
, all_frames
;
2013 return next_window (window
, minibuf
, all_frames
, 1);
2017 DEFUN ("previous-window", Fprevious_window
, Sprevious_window
, 0, 3, 0,
2018 doc
: /* Return the window preceding WINDOW in canonical ordering of windows.
2019 If omitted, WINDOW defaults to the selected window.
2021 Optional second arg MINIBUF t means count the minibuffer window even
2022 if not active. MINIBUF nil or omitted means count the minibuffer iff
2023 it is active. MINIBUF neither t nor nil means not to count the
2024 minibuffer even if it is active.
2026 Several frames may share a single minibuffer; if the minibuffer
2027 counts, all windows on all frames that share that minibuffer count
2028 too. Therefore, `previous-window' can be used to iterate through
2029 the set of windows even when the minibuffer is on another frame. If
2030 the minibuffer does not count, only windows from WINDOW's frame count
2032 Optional third arg ALL-FRAMES t means include windows on all frames.
2033 ALL-FRAMES nil or omitted means cycle within the frames as specified
2034 above. ALL-FRAMES = `visible' means include windows on all visible frames.
2035 ALL-FRAMES = 0 means include windows on all visible and iconified frames.
2036 If ALL-FRAMES is a frame, restrict search to windows on that frame.
2037 Anything else means restrict to WINDOW's frame.
2039 If you use consistent values for MINIBUF and ALL-FRAMES, you can use
2040 `previous-window' to iterate through the entire cycle of acceptable
2041 windows, eventually ending up back at the window you started with.
2042 `next-window' traverses the same cycle, in the reverse order. */)
2043 (window
, minibuf
, all_frames
)
2044 Lisp_Object window
, minibuf
, all_frames
;
2046 return next_window (window
, minibuf
, all_frames
, 0);
2050 DEFUN ("other-window", Fother_window
, Sother_window
, 1, 2, "p",
2051 doc
: /* Select the ARG'th different window on this frame.
2052 All windows on current frame are arranged in a cyclic order.
2053 This command selects the window ARG steps away in that order.
2054 A negative ARG moves in the opposite order. The optional second
2055 argument ALL-FRAMES has the same meaning as in `next-window', which see. */)
2057 Lisp_Object arg
, all_frames
;
2063 window
= selected_window
;
2065 for (i
= XINT (arg
); i
> 0; --i
)
2066 window
= Fnext_window (window
, Qnil
, all_frames
);
2068 window
= Fprevious_window (window
, Qnil
, all_frames
);
2070 Fselect_window (window
, Qnil
);
2075 DEFUN ("window-list", Fwindow_list
, Swindow_list
, 0, 3, 0,
2076 doc
: /* Return a list of windows on FRAME, starting with WINDOW.
2077 FRAME nil or omitted means use the selected frame.
2078 WINDOW nil or omitted means use the selected window.
2079 MINIBUF t means include the minibuffer window, even if it isn't active.
2080 MINIBUF nil or omitted means include the minibuffer window only
2082 MINIBUF neither nil nor t means never include the minibuffer window. */)
2083 (frame
, minibuf
, window
)
2084 Lisp_Object frame
, minibuf
, window
;
2087 window
= FRAMEP (frame
) ? XFRAME (frame
)->selected_window
: selected_window
;
2088 CHECK_WINDOW (window
);
2090 frame
= selected_frame
;
2092 if (!EQ (frame
, XWINDOW (window
)->frame
))
2093 error ("Window is on a different frame");
2095 return window_list_1 (window
, minibuf
, frame
);
2099 /* Return a list of windows in canonical ordering. Arguments are like
2100 for `next-window'. */
2103 window_list_1 (window
, minibuf
, all_frames
)
2104 Lisp_Object window
, minibuf
, all_frames
;
2106 Lisp_Object tail
, list
, rest
;
2108 decode_next_window_args (&window
, &minibuf
, &all_frames
);
2111 for (tail
= window_list (); CONSP (tail
); tail
= XCDR (tail
))
2112 if (candidate_window_p (XCAR (tail
), window
, minibuf
, all_frames
))
2113 list
= Fcons (XCAR (tail
), list
);
2115 /* Rotate the list to start with WINDOW. */
2116 list
= Fnreverse (list
);
2117 rest
= Fmemq (window
, list
);
2118 if (!NILP (rest
) && !EQ (rest
, list
))
2120 for (tail
= list
; !EQ (XCDR (tail
), rest
); tail
= XCDR (tail
))
2122 XSETCDR (tail
, Qnil
);
2123 list
= nconc2 (rest
, list
);
2130 /* Look at all windows, performing an operation specified by TYPE
2132 If FRAMES is Qt, look at all frames;
2133 Qnil, look at just the selected frame;
2134 Qvisible, look at visible frames;
2135 a frame, just look at windows on that frame.
2136 If MINI is non-zero, perform the operation on minibuffer windows too. */
2141 GET_BUFFER_WINDOW
, /* Arg is buffer */
2142 GET_LRU_WINDOW
, /* Arg is t for full-width windows only */
2143 DELETE_OTHER_WINDOWS
, /* Arg is window not to delete */
2144 DELETE_BUFFER_WINDOWS
, /* Arg is buffer */
2146 UNSHOW_BUFFER
, /* Arg is buffer */
2147 REDISPLAY_BUFFER_WINDOWS
, /* Arg is buffer */
2152 window_loop (type
, obj
, mini
, frames
)
2153 enum window_loop type
;
2154 Lisp_Object obj
, frames
;
2157 Lisp_Object window
, windows
, best_window
, frame_arg
;
2159 struct gcpro gcpro1
;
2161 /* If we're only looping through windows on a particular frame,
2162 frame points to that frame. If we're looping through windows
2163 on all frames, frame is 0. */
2164 if (FRAMEP (frames
))
2165 f
= XFRAME (frames
);
2166 else if (NILP (frames
))
2167 f
= SELECTED_FRAME ();
2172 frame_arg
= Qlambda
;
2173 else if (EQ (frames
, make_number (0)))
2175 else if (EQ (frames
, Qvisible
))
2180 /* frame_arg is Qlambda to stick to one frame,
2181 Qvisible to consider all visible frames,
2184 /* Pick a window to start with. */
2188 window
= FRAME_SELECTED_WINDOW (f
);
2190 window
= FRAME_SELECTED_WINDOW (SELECTED_FRAME ());
2192 windows
= window_list_1 (window
, mini
? Qt
: Qnil
, frame_arg
);
2196 for (; CONSP (windows
); windows
= XCDR (windows
))
2200 window
= XCAR (windows
);
2201 w
= XWINDOW (window
);
2203 /* Note that we do not pay attention here to whether the frame
2204 is visible, since Fwindow_list skips non-visible frames if
2205 that is desired, under the control of frame_arg. */
2206 if (!MINI_WINDOW_P (w
)
2207 /* For UNSHOW_BUFFER, we must always consider all windows. */
2208 || type
== UNSHOW_BUFFER
2209 || (mini
&& minibuf_level
> 0))
2212 case GET_BUFFER_WINDOW
:
2213 if (EQ (w
->buffer
, obj
)
2214 /* Don't find any minibuffer window
2215 except the one that is currently in use. */
2216 && (MINI_WINDOW_P (w
)
2217 ? EQ (window
, minibuf_window
)
2220 if (NILP (best_window
))
2221 best_window
= window
;
2222 else if (EQ (window
, selected_window
))
2223 /* Prefer to return selected-window. */
2224 RETURN_UNGCPRO (window
);
2225 else if (EQ (Fwindow_frame (window
), selected_frame
))
2226 /* Prefer windows on the current frame. */
2227 best_window
= window
;
2231 case GET_LRU_WINDOW
:
2232 /* `obj' is an integer encoding a bitvector.
2233 `obj & 1' means consider only full-width windows.
2234 `obj & 2' means consider also dedicated windows. */
2235 if (((XINT (obj
) & 1) && !WINDOW_FULL_WIDTH_P (w
))
2236 || (!(XINT (obj
) & 2) && !NILP (w
->dedicated
))
2237 /* Minibuffer windows are always ignored. */
2238 || MINI_WINDOW_P (w
))
2240 if (NILP (best_window
)
2241 || (XFASTINT (XWINDOW (best_window
)->use_time
)
2242 > XFASTINT (w
->use_time
)))
2243 best_window
= window
;
2246 case DELETE_OTHER_WINDOWS
:
2247 if (!EQ (window
, obj
))
2248 Fdelete_window (window
);
2251 case DELETE_BUFFER_WINDOWS
:
2252 if (EQ (w
->buffer
, obj
))
2254 struct frame
*f
= XFRAME (WINDOW_FRAME (w
));
2256 /* If this window is dedicated, and in a frame of its own,
2258 if (EQ (window
, FRAME_ROOT_WINDOW (f
))
2259 && !NILP (w
->dedicated
)
2260 && other_visible_frames (f
))
2262 /* Skip the other windows on this frame.
2263 There might be one, the minibuffer! */
2264 while (CONSP (XCDR (windows
))
2265 && EQ (XWINDOW (XCAR (windows
))->frame
,
2266 XWINDOW (XCAR (XCDR (windows
)))->frame
))
2267 windows
= XCDR (windows
);
2269 /* Now we can safely delete the frame. */
2270 Fdelete_frame (w
->frame
, Qnil
);
2272 else if (NILP (w
->parent
))
2274 /* If we're deleting the buffer displayed in the
2275 only window on the frame, find a new buffer to
2278 buffer
= Fother_buffer (obj
, Qnil
, w
->frame
);
2279 Fset_window_buffer (window
, buffer
, Qnil
);
2280 if (EQ (window
, selected_window
))
2281 Fset_buffer (w
->buffer
);
2284 Fdelete_window (window
);
2288 case GET_LARGEST_WINDOW
:
2289 { /* nil `obj' means to ignore dedicated windows. */
2290 /* Ignore dedicated windows and minibuffers. */
2291 if (MINI_WINDOW_P (w
) || (NILP (obj
) && !NILP (w
->dedicated
)))
2294 if (NILP (best_window
))
2295 best_window
= window
;
2298 struct window
*b
= XWINDOW (best_window
);
2299 if (XFASTINT (w
->total_lines
) * XFASTINT (w
->total_cols
)
2300 > XFASTINT (b
->total_lines
) * XFASTINT (b
->total_cols
))
2301 best_window
= window
;
2307 if (EQ (w
->buffer
, obj
))
2310 struct frame
*f
= XFRAME (w
->frame
);
2312 /* Find another buffer to show in this window. */
2313 buffer
= Fother_buffer (obj
, Qnil
, w
->frame
);
2315 /* If this window is dedicated, and in a frame of its own,
2317 if (EQ (window
, FRAME_ROOT_WINDOW (f
))
2318 && !NILP (w
->dedicated
)
2319 && other_visible_frames (f
))
2321 /* Skip the other windows on this frame.
2322 There might be one, the minibuffer! */
2323 while (CONSP (XCDR (windows
))
2324 && EQ (XWINDOW (XCAR (windows
))->frame
,
2325 XWINDOW (XCAR (XCDR (windows
)))->frame
))
2326 windows
= XCDR (windows
);
2328 /* Now we can safely delete the frame. */
2329 Fdelete_frame (w
->frame
, Qnil
);
2331 else if (!NILP (w
->dedicated
) && !NILP (w
->parent
))
2334 XSETWINDOW (window
, w
);
2335 /* If this window is dedicated and not the only window
2336 in its frame, then kill it. */
2337 Fdelete_window (window
);
2341 /* Otherwise show a different buffer in the window. */
2342 w
->dedicated
= Qnil
;
2343 Fset_window_buffer (window
, buffer
, Qnil
);
2344 if (EQ (window
, selected_window
))
2345 Fset_buffer (w
->buffer
);
2350 case REDISPLAY_BUFFER_WINDOWS
:
2351 if (EQ (w
->buffer
, obj
))
2353 mark_window_display_accurate (window
, 0);
2354 w
->update_mode_line
= Qt
;
2355 XBUFFER (obj
)->prevent_redisplay_optimizations_p
= 1;
2356 ++update_mode_lines
;
2357 best_window
= window
;
2361 /* Check for a window that has a killed buffer. */
2362 case CHECK_ALL_WINDOWS
:
2363 if (! NILP (w
->buffer
)
2364 && NILP (XBUFFER (w
->buffer
)->name
))
2368 case WINDOW_LOOP_UNUSED
:
2377 /* Used for debugging. Abort if any window has a dead buffer. */
2380 check_all_windows ()
2382 window_loop (CHECK_ALL_WINDOWS
, Qnil
, 1, Qt
);
2385 DEFUN ("get-lru-window", Fget_lru_window
, Sget_lru_window
, 0, 2, 0,
2386 doc
: /* Return the window least recently selected or used for display.
2387 \(LRU means Least Recently Used.)
2389 Return a full-width window if possible.
2390 A minibuffer window is never a candidate.
2391 A dedicated window is never a candidate, unless DEDICATED is non-nil,
2392 so if all windows are dedicated, the value is nil.
2393 If optional argument FRAME is `visible', search all visible frames.
2394 If FRAME is 0, search all visible and iconified frames.
2395 If FRAME is t, search all frames.
2396 If FRAME is nil, search only the selected frame.
2397 If FRAME is a frame, search only that frame. */)
2399 Lisp_Object frame
, dedicated
;
2401 register Lisp_Object w
;
2402 /* First try for a window that is full-width */
2403 w
= window_loop (GET_LRU_WINDOW
,
2404 NILP (dedicated
) ? make_number (1) : make_number (3),
2406 if (!NILP (w
) && !EQ (w
, selected_window
))
2408 /* If none of them, try the rest */
2409 return window_loop (GET_LRU_WINDOW
,
2410 NILP (dedicated
) ? make_number (0) : make_number (2),
2414 DEFUN ("get-largest-window", Fget_largest_window
, Sget_largest_window
, 0, 2, 0,
2415 doc
: /* Return the largest window in area.
2416 A minibuffer window is never a candidate.
2417 A dedicated window is never a candidate unless DEDICATED is non-nil,
2418 so if all windows are dedicated, the value is nil.
2419 If optional argument FRAME is `visible', search all visible frames.
2420 If FRAME is 0, search all visible and iconified frames.
2421 If FRAME is t, search all frames.
2422 If FRAME is nil, search only the selected frame.
2423 If FRAME is a frame, search only that frame. */)
2425 Lisp_Object frame
, dedicated
;
2427 return window_loop (GET_LARGEST_WINDOW
, dedicated
, 0,
2431 DEFUN ("get-buffer-window", Fget_buffer_window
, Sget_buffer_window
, 0, 2, 0,
2432 doc
: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none.
2433 BUFFER-OR-NAME may be a buffer or a buffer name and defaults to the
2435 If optional argument FRAME is `visible', search all visible frames.
2436 If optional argument FRAME is 0, search all visible and iconified frames.
2437 If FRAME is t, search all frames.
2438 If FRAME is nil, search only the selected frame.
2439 If FRAME is a frame, search only that frame. */)
2440 (buffer_or_name
, frame
)
2441 Lisp_Object buffer_or_name
, frame
;
2445 if (NILP (buffer_or_name
))
2446 buffer
= Fcurrent_buffer ();
2448 buffer
= Fget_buffer (buffer_or_name
);
2450 if (BUFFERP (buffer
))
2451 return window_loop (GET_BUFFER_WINDOW
, buffer
, 1, frame
);
2456 DEFUN ("delete-other-windows", Fdelete_other_windows
, Sdelete_other_windows
,
2458 doc
: /* Make WINDOW (or the selected window) fill its frame.
2459 Only the frame WINDOW is on is affected.
2460 This function tries to reduce display jumps by keeping the text
2461 previously visible in WINDOW in the same place on the frame. Doing this
2462 depends on the value of (window-start WINDOW), so if calling this
2463 function in a program gives strange scrolling, make sure the
2464 window-start value is reasonable when this function is called. */)
2473 window
= selected_window
;
2475 CHECK_LIVE_WINDOW (window
);
2476 w
= XWINDOW (window
);
2478 startpos
= marker_position (w
->start
);
2479 top
= WINDOW_TOP_EDGE_LINE (w
) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w
)));
2481 if (MINI_WINDOW_P (w
) && top
> 0)
2482 error ("Can't expand minibuffer to full frame");
2484 window_loop (DELETE_OTHER_WINDOWS
, window
, 0, WINDOW_FRAME (w
));
2486 /* Try to minimize scrolling, by setting the window start to the point
2487 will cause the text at the old window start to be at the same place
2488 on the frame. But don't try to do this if the window start is
2489 outside the visible portion (as might happen when the display is
2490 not current, due to typeahead). */
2491 new_top
= WINDOW_TOP_EDGE_LINE (w
) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w
)));
2493 && startpos
>= BUF_BEGV (XBUFFER (w
->buffer
))
2494 && startpos
<= BUF_ZV (XBUFFER (w
->buffer
)))
2496 struct position pos
;
2497 struct buffer
*obuf
= current_buffer
;
2499 Fset_buffer (w
->buffer
);
2500 /* This computation used to temporarily move point, but that can
2501 have unwanted side effects due to text properties. */
2502 pos
= *vmotion (startpos
, -top
, w
);
2504 set_marker_both (w
->start
, w
->buffer
, pos
.bufpos
, pos
.bytepos
);
2505 w
->window_end_valid
= Qnil
;
2506 w
->start_at_line_beg
= ((pos
.bytepos
== BEGV_BYTE
2507 || FETCH_BYTE (pos
.bytepos
- 1) == '\n') ? Qt
2509 /* We need to do this, so that the window-scroll-functions
2511 w
->optional_new_start
= Qt
;
2513 set_buffer_internal (obuf
);
2519 DEFUN ("delete-windows-on", Fdelete_windows_on
, Sdelete_windows_on
,
2520 0, 2, "bDelete windows on (buffer): ",
2521 doc
: /* Delete all windows showing BUFFER-OR-NAME.
2522 BUFFER-OR-NAME may be a buffer or the name of an existing buffer and
2523 defaults to the current buffer.
2525 Optional second argument FRAME controls which frames are affected.
2526 If optional argument FRAME is `visible', search all visible frames.
2527 If FRAME is 0, search all visible and iconified frames.
2528 If FRAME is nil, search all frames.
2529 If FRAME is t, search only the selected frame.
2530 If FRAME is a frame, search only that frame.
2531 When a window showing BUFFER-OR-NAME is dedicated and the only window of
2532 its frame, that frame is deleted when there are other frames left. */)
2533 (buffer_or_name
, frame
)
2534 Lisp_Object buffer_or_name
, frame
;
2538 /* FRAME uses t and nil to mean the opposite of what window_loop
2542 else if (EQ (frame
, Qt
))
2545 if (NILP (buffer_or_name
))
2546 buffer
= Fcurrent_buffer ();
2549 buffer
= Fget_buffer (buffer_or_name
);
2550 CHECK_BUFFER (buffer
);
2553 window_loop (DELETE_BUFFER_WINDOWS
, buffer
, 0, frame
);
2558 DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows
,
2559 Sreplace_buffer_in_windows
,
2560 0, 1, "bReplace buffer in windows: ",
2561 doc
: /* Replace BUFFER-OR-NAME with some other buffer in all windows showing it.
2562 BUFFER-OR-NAME may be a buffer or the name of an existing buffer and
2563 defaults to the current buffer.
2565 When a window showing BUFFER-OR-NAME is dedicated that window is
2566 deleted. If that window is the only window on its frame, that frame is
2567 deleted too when there are other frames left. If there are no other
2568 frames left, some other buffer is displayed in that window. */)
2570 Lisp_Object buffer_or_name
;
2574 if (NILP (buffer_or_name
))
2575 buffer
= Fcurrent_buffer ();
2578 buffer
= Fget_buffer (buffer_or_name
);
2579 CHECK_BUFFER (buffer
);
2582 window_loop (UNSHOW_BUFFER
, buffer
, 0, Qt
);
2587 /* Replace BUFFER with some other buffer in all windows
2588 of all frames, even those on other keyboards. */
2591 replace_buffer_in_all_windows (buffer
)
2594 Lisp_Object tail
, frame
;
2596 /* A single call to window_loop won't do the job
2597 because it only considers frames on the current keyboard.
2598 So loop manually over frames, and handle each one. */
2599 FOR_EACH_FRAME (tail
, frame
)
2600 window_loop (UNSHOW_BUFFER
, buffer
, 1, frame
);
2603 /* Set the height of WINDOW and all its inferiors. */
2605 /* The smallest acceptable dimensions for a window. Anything smaller
2606 might crash Emacs. */
2608 #define MIN_SAFE_WINDOW_WIDTH (2)
2609 #define MIN_SAFE_WINDOW_HEIGHT (1)
2611 /* For wp non-zero the total number of columns of window w. Otherwise
2612 the total number of lines of w. */
2614 #define WINDOW_TOTAL_SIZE(w, wp) \
2615 (wp ? WINDOW_TOTAL_COLS (w) : WINDOW_TOTAL_LINES (w))
2617 /* If *ROWS or *COLS are too small a size for FRAME, set them to the
2618 minimum allowable size. */
2621 check_frame_size (frame
, rows
, cols
)
2625 /* For height, we have to see:
2626 how many windows the frame has at minimum (one or two),
2627 and whether it has a menu bar or other special stuff at the top. */
2629 = ((FRAME_MINIBUF_ONLY_P (frame
) || ! FRAME_HAS_MINIBUF_P (frame
))
2630 ? MIN_SAFE_WINDOW_HEIGHT
2631 : 2 * MIN_SAFE_WINDOW_HEIGHT
);
2633 if (FRAME_TOP_MARGIN (frame
) > 0)
2634 min_height
+= FRAME_TOP_MARGIN (frame
);
2636 if (*rows
< min_height
)
2638 if (*cols
< MIN_SAFE_WINDOW_WIDTH
)
2639 *cols
= MIN_SAFE_WINDOW_WIDTH
;
2642 /* Value is non-zero if window W is fixed-size. WIDTH_P non-zero means
2643 check if W's width can be changed, otherwise check W's height.
2644 CHECK_SIBLINGS_P non-zero means check resizablity of WINDOW's
2645 siblings, too. If none of the siblings is resizable, WINDOW isn't
2649 window_fixed_size_p (w
, width_p
, check_siblings_p
)
2651 int width_p
, check_siblings_p
;
2656 if (!NILP (w
->hchild
))
2658 c
= XWINDOW (w
->hchild
);
2662 /* A horizontal combination is fixed-width if all of if its
2664 while (c
&& window_fixed_size_p (c
, width_p
, 0))
2665 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2666 fixed_p
= c
== NULL
;
2670 /* A horizontal combination is fixed-height if one of if its
2672 while (c
&& !window_fixed_size_p (c
, width_p
, 0))
2673 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2674 fixed_p
= c
!= NULL
;
2677 else if (!NILP (w
->vchild
))
2679 c
= XWINDOW (w
->vchild
);
2683 /* A vertical combination is fixed-width if one of if its
2685 while (c
&& !window_fixed_size_p (c
, width_p
, 0))
2686 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2687 fixed_p
= c
!= NULL
;
2691 /* A vertical combination is fixed-height if all of if its
2693 while (c
&& window_fixed_size_p (c
, width_p
, 0))
2694 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2695 fixed_p
= c
== NULL
;
2698 else if (BUFFERP (w
->buffer
))
2700 struct buffer
*old
= current_buffer
;
2703 current_buffer
= XBUFFER (w
->buffer
);
2704 val
= find_symbol_value (Qwindow_size_fixed
);
2705 current_buffer
= old
;
2708 if (!EQ (val
, Qunbound
))
2710 fixed_p
= !NILP (val
);
2713 && ((EQ (val
, Qheight
) && width_p
)
2714 || (EQ (val
, Qwidth
) && !width_p
)))
2718 /* Can't tell if this one is resizable without looking at
2719 siblings. If all siblings are fixed-size this one is too. */
2720 if (!fixed_p
&& check_siblings_p
&& WINDOWP (w
->parent
))
2724 for (child
= w
->prev
; WINDOWP (child
); child
= XWINDOW (child
)->prev
)
2725 if (!window_fixed_size_p (XWINDOW (child
), width_p
, 0))
2729 for (child
= w
->next
; WINDOWP (child
); child
= XWINDOW (child
)->next
)
2730 if (!window_fixed_size_p (XWINDOW (child
), width_p
, 0))
2743 /* Return minimum size of leaf window W. WIDTH_P non-zero means return
2744 the minimum width of W, WIDTH_P zero means return the minimum height
2745 of W. SAFE_P non-zero means ignore window-min-height|width but just
2746 return values that won't crash Emacs and don't hide components like
2747 fringes, scrollbars, or modelines. If WIDTH_P is zero and W is the
2748 minibuffer window, always return 1. */
2751 window_min_size_2 (w
, width_p
, safe_p
)
2753 int width_p
, safe_p
;
2755 /* We should consider buffer-local values of window_min_height and
2756 window_min_width here. */
2759 int safe_size
= (MIN_SAFE_WINDOW_WIDTH
2760 + WINDOW_FRINGE_COLS (w
)
2761 + WINDOW_SCROLL_BAR_COLS (w
));
2763 return safe_p
? safe_size
: max (window_min_width
, safe_size
);
2765 else if (MINI_WINDOW_P (w
))
2769 int safe_size
= (MIN_SAFE_WINDOW_HEIGHT
2770 + ((BUFFERP (w
->buffer
)
2771 && !NILP (XBUFFER (w
->buffer
)->mode_line_format
))
2774 return safe_p
? safe_size
: max (window_min_height
, safe_size
);
2778 /* Return minimum size of window W, not taking fixed-width windows into
2779 account. WIDTH_P non-zero means return the minimum width, otherwise
2780 return the minimum height. SAFE_P non-zero means ignore
2781 window-min-height|width but just return values that won't crash Emacs
2782 and don't hide components like fringes, scrollbars, or modelines. If
2783 W is a combination window, compute the minimum size from the minimum
2784 sizes of W's children. */
2787 window_min_size_1 (w
, width_p
, safe_p
)
2789 int width_p
, safe_p
;
2794 if (!NILP (w
->hchild
))
2796 /* W is a horizontal combination. */
2797 c
= XWINDOW (w
->hchild
);
2802 /* The minimum width of a horizontal combination is the sum of
2803 the minimum widths of its children. */
2806 size
+= window_min_size_1 (c
, 1, safe_p
);
2807 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2812 /* The minimum height of a horizontal combination is the
2813 maximum of the minimum heights of its children. */
2816 size
= max (window_min_size_1 (c
, 0, safe_p
), size
);
2817 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2821 else if (!NILP (w
->vchild
))
2823 /* W is a vertical combination. */
2824 c
= XWINDOW (w
->vchild
);
2829 /* The minimum width of a vertical combination is the maximum
2830 of the minimum widths of its children. */
2833 size
= max (window_min_size_1 (c
, 1, safe_p
), size
);
2834 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2839 /* The minimum height of a vertical combination is the sum of
2840 the minimum height of its children. */
2843 size
+= window_min_size_1 (c
, 0, safe_p
);
2844 c
= WINDOWP (c
->next
) ? XWINDOW (c
->next
) : NULL
;
2849 /* W is a leaf window. */
2850 size
= window_min_size_2 (w
, width_p
, safe_p
);
2855 /* Return the minimum size of window W, taking fixed-size windows into
2856 account. WIDTH_P non-zero means return the minimum width, otherwise
2857 return the minimum height. SAFE_P non-zero means ignore
2858 window-min-height|width but just return values that won't crash Emacs
2859 and don't hide components like fringes, scrollbars, or modelines.
2860 IGNORE_FIXED_P non-zero means ignore if W is fixed-size. Set *FIXED
2861 to 1 if W is fixed-size unless FIXED is null. */
2864 window_min_size (w
, width_p
, safe_p
, ignore_fixed_p
, fixed
)
2866 int width_p
, safe_p
, ignore_fixed_p
, *fixed
;
2873 fixed_p
= window_fixed_size_p (w
, width_p
, 1);
2879 size
= WINDOW_TOTAL_SIZE (w
, width_p
);
2881 size
= window_min_size_1 (w
, width_p
, safe_p
);
2887 /* Adjust the margins of window W if text area is too small.
2888 Return 1 if window width is ok after adjustment; 0 if window
2889 is still too narrow. */
2892 adjust_window_margins (w
)
2895 int box_cols
= (WINDOW_TOTAL_COLS (w
)
2896 - WINDOW_FRINGE_COLS (w
)
2897 - WINDOW_SCROLL_BAR_COLS (w
));
2898 int margin_cols
= (WINDOW_LEFT_MARGIN_COLS (w
)
2899 + WINDOW_RIGHT_MARGIN_COLS (w
));
2901 if (box_cols
- margin_cols
>= MIN_SAFE_WINDOW_WIDTH
)
2904 if (margin_cols
< 0 || box_cols
< MIN_SAFE_WINDOW_WIDTH
)
2907 /* Window's text area is too narrow, but reducing the window
2908 margins will fix that. */
2909 margin_cols
= box_cols
- MIN_SAFE_WINDOW_WIDTH
;
2910 if (WINDOW_RIGHT_MARGIN_COLS (w
) > 0)
2912 if (WINDOW_LEFT_MARGIN_COLS (w
) > 0)
2913 w
->left_margin_cols
= w
->right_margin_cols
2914 = make_number (margin_cols
/2);
2916 w
->right_margin_cols
= make_number (margin_cols
);
2919 w
->left_margin_cols
= make_number (margin_cols
);
2923 /* Calculate new sizes for windows in the list FORWARD when their
2924 compound size goes from TOTAL to SIZE. TOTAL must be greater than
2925 SIZE. The number of windows in FORWARD is NCHILDREN, and the number
2926 that can shrink is SHRINKABLE. Fixed-size windows may be shrunk if
2927 and only if RESIZE_FIXED_P is non-zero. WIDTH_P non-zero means
2928 shrink columns, otherwise shrink lines.
2930 SAFE_P zero means windows may be sized down to window-min-height
2931 lines (window-min-window columns for WIDTH_P non-zero). SAFE_P
2932 non-zero means windows may be sized down to their minimum safe sizes
2933 taking into account the space needed to display modelines, fringes,
2936 This function returns an allocated array of new sizes that the caller
2937 must free. A size -1 means the window is fixed and RESIZE_FIXED_P is
2938 zero. A size zero means the window shall be deleted. Array index 0
2939 refers to the first window in FORWARD, 1 to the second, and so on.
2941 This function resizes windows proportionally to their size. It also
2942 tries to preserve smaller windows by resizing larger windows before
2943 resizing any window to zero. If resize_proportionally is non-nil for
2944 a specific window, it will attempt to strictly resize that window
2945 proportionally, even at the expense of deleting smaller windows. */
2947 shrink_windows (total
, size
, nchildren
, shrinkable
, resize_fixed_p
,
2948 forward
, width_p
, safe_p
)
2949 int total
, size
, nchildren
, shrinkable
;
2950 int resize_fixed_p
, width_p
, safe_p
;
2951 Lisp_Object forward
;
2953 int available_resize
= 0;
2954 int *new_sizes
, *min_sizes
;
2957 int smallest
= total
;
2958 int total_removed
= 0;
2959 int total_shrink
= total
- size
;
2962 new_sizes
= xmalloc (sizeof (*new_sizes
) * nchildren
);
2963 min_sizes
= xmalloc (sizeof (*min_sizes
) * nchildren
);
2965 for (i
= 0, child
= forward
; !NILP (child
); child
= c
->next
, ++i
)
2969 c
= XWINDOW (child
);
2970 child_size
= WINDOW_TOTAL_SIZE (c
, width_p
);
2972 if (!resize_fixed_p
&& window_fixed_size_p (c
, width_p
, 0))
2976 new_sizes
[i
] = child_size
;
2977 min_sizes
[i
] = window_min_size_1 (c
, width_p
, safe_p
);
2978 if (child_size
> min_sizes
[i
]
2979 && NILP (c
->resize_proportionally
))
2980 available_resize
+= child_size
- min_sizes
[i
];
2983 /* We might need to shrink some windows to zero. Find the smallest
2984 windows and set them to 0 until we can fulfil the new size. */
2986 while (shrinkable
> 1 && size
+ available_resize
< total
)
2988 for (i
= 0; i
< nchildren
; ++i
)
2989 if (new_sizes
[i
] > 0 && smallest
> new_sizes
[i
])
2990 smallest
= new_sizes
[i
];
2992 for (i
= 0; i
< nchildren
; ++i
)
2993 if (new_sizes
[i
] == smallest
)
2995 /* Resize this window down to zero. */
2997 if (smallest
> min_sizes
[i
])
2998 available_resize
-= smallest
- min_sizes
[i
];
2999 available_resize
+= smallest
;
3001 total_removed
+= smallest
;
3003 /* We don't know what the smallest is now. */
3006 /* Out of for, just remove one window at the time and
3007 check again if we have enough space. */
3012 /* Now, calculate the new sizes. Try to shrink each window
3013 proportional to its size. */
3014 for (i
= 0; i
< nchildren
; ++i
)
3016 if (new_sizes
[i
] > min_sizes
[i
])
3018 int to_shrink
= total_shrink
* new_sizes
[i
] / total
;
3020 if (new_sizes
[i
] - to_shrink
< min_sizes
[i
])
3021 to_shrink
= new_sizes
[i
] - min_sizes
[i
];
3022 new_sizes
[i
] -= to_shrink
;
3023 total_removed
+= to_shrink
;
3027 /* Any reminder due to rounding, we just subtract from windows
3028 that are left and still can be shrunk. */
3029 while (total_shrink
> total_removed
)
3031 int nonzero_sizes
= 0;
3032 int nonzero_idx
= -1;
3034 for (i
= 0; i
< nchildren
; ++i
)
3035 if (new_sizes
[i
] > 0)
3041 for (i
= 0; i
< nchildren
; ++i
)
3042 if (new_sizes
[i
] > min_sizes
[i
])
3047 /* Out of for, just shrink one window at the time and
3048 check again if we have enough space. */
3052 /* Special case, only one window left. */
3053 if (nonzero_sizes
== 1)
3057 /* Any surplus due to rounding, we add to windows that are left. */
3058 while (total_shrink
< total_removed
)
3060 for (i
= 0; i
< nchildren
; ++i
)
3062 if (new_sizes
[i
] != 0 && total_shrink
< total_removed
)
3076 /* Set WINDOW's height or width to SIZE. WIDTH_P non-zero means set
3077 WINDOW's width. Resize WINDOW's children, if any, so that they keep
3078 their proportionate size relative to WINDOW.
3080 If FIRST_ONLY is 1, change only the first of WINDOW's children when
3081 they are in series. If LAST_ONLY is 1, change only the last of
3082 WINDOW's children when they are in series.
3084 Propagate WINDOW's top or left edge position to children. Delete
3085 windows that become too small unless NODELETE_P is 1. When
3086 NODELETE_P equals 2 do not honor settings for window-min-height and
3087 window-min-width when resizing windows but use safe defaults instead.
3088 This should give better behavior when resizing frames. */
3091 size_window (window
, size
, width_p
, nodelete_p
, first_only
, last_only
)
3093 int size
, width_p
, nodelete_p
;
3094 int first_only
, last_only
;
3096 struct window
*w
= XWINDOW (window
);
3098 Lisp_Object child
, *forward
, *sideward
;
3099 int old_size
= WINDOW_TOTAL_SIZE (w
, width_p
);
3101 size
= max (0, size
);
3103 /* Delete WINDOW if it's too small. */
3104 if (nodelete_p
!= 1 && !NILP (w
->parent
)
3105 && size
< window_min_size_1 (w
, width_p
, nodelete_p
== 2))
3107 delete_window (window
);
3111 /* Set redisplay hints. */
3112 w
->last_modified
= make_number (0);
3113 w
->last_overlay_modified
= make_number (0);
3114 windows_or_buffers_changed
++;
3115 FRAME_WINDOW_SIZES_CHANGED (XFRAME (w
->frame
)) = 1;
3119 sideward
= &w
->vchild
;
3120 forward
= &w
->hchild
;
3121 w
->total_cols
= make_number (size
);
3122 adjust_window_margins (w
);
3126 sideward
= &w
->hchild
;
3127 forward
= &w
->vchild
;
3128 w
->total_lines
= make_number (size
);
3129 w
->orig_total_lines
= Qnil
;
3132 if (!NILP (*sideward
))
3134 /* We have a chain of parallel siblings whose size should all change. */
3135 for (child
= *sideward
; !NILP (child
); child
= c
->next
)
3137 c
= XWINDOW (child
);
3139 c
->left_col
= w
->left_col
;
3141 c
->top_line
= w
->top_line
;
3142 size_window (child
, size
, width_p
, nodelete_p
,
3143 first_only
, last_only
);
3146 else if (!NILP (*forward
) && last_only
)
3148 /* Change the last in a series of siblings. */
3149 Lisp_Object last_child
;
3152 for (child
= *forward
; !NILP (child
); child
= c
->next
)
3154 c
= XWINDOW (child
);
3158 child_size
= WINDOW_TOTAL_SIZE (c
, width_p
);
3159 size_window (last_child
, size
- old_size
+ child_size
,
3160 width_p
, nodelete_p
, first_only
, last_only
);
3162 else if (!NILP (*forward
) && first_only
)
3164 /* Change the first in a series of siblings. */
3168 c
= XWINDOW (child
);
3171 c
->left_col
= w
->left_col
;
3173 c
->top_line
= w
->top_line
;
3175 child_size
= WINDOW_TOTAL_SIZE (c
, width_p
);
3176 size_window (child
, size
- old_size
+ child_size
,
3177 width_p
, nodelete_p
, first_only
, last_only
);
3179 else if (!NILP (*forward
))
3181 int fixed_size
, each
, extra
, n
;
3182 int resize_fixed_p
, nfixed
;
3183 int last_pos
, first_pos
, nchildren
, total
;
3184 int *new_sizes
= NULL
;
3186 /* Determine the fixed-size portion of this window, and the
3187 number of child windows. */
3188 fixed_size
= nchildren
= nfixed
= total
= 0;
3189 for (child
= *forward
; !NILP (child
); child
= c
->next
, ++nchildren
)
3193 c
= XWINDOW (child
);
3194 child_size
= WINDOW_TOTAL_SIZE (c
, width_p
);
3195 total
+= child_size
;
3197 if (window_fixed_size_p (c
, width_p
, 0))
3199 fixed_size
+= child_size
;
3204 /* If the new size is smaller than fixed_size, or if there
3205 aren't any resizable windows, allow resizing fixed-size
3207 resize_fixed_p
= nfixed
== nchildren
|| size
< fixed_size
;
3209 /* Compute how many lines/columns to add/remove to each child. The
3210 value of extra takes care of rounding errors. */
3211 n
= resize_fixed_p
? nchildren
: nchildren
- nfixed
;
3212 if (size
< total
&& n
> 1)
3213 new_sizes
= shrink_windows (total
, size
, nchildren
, n
,
3214 resize_fixed_p
, *forward
, width_p
,
3218 each
= (size
- total
) / n
;
3219 extra
= (size
- total
) - n
* each
;
3222 /* Compute new children heights and edge positions. */
3223 first_pos
= width_p
? XINT (w
->left_col
) : XINT (w
->top_line
);
3224 last_pos
= first_pos
;
3225 for (n
= 0, child
= *forward
; !NILP (child
); child
= c
->next
, ++n
)
3227 int new_size
, old_size
;
3229 c
= XWINDOW (child
);
3230 old_size
= WINDOW_TOTAL_SIZE (c
, width_p
);
3231 new_size
= old_size
;
3233 /* The top or left edge position of this child equals the
3234 bottom or right edge of its predecessor. */
3236 c
->left_col
= make_number (last_pos
);
3238 c
->top_line
= make_number (last_pos
);
3240 /* If this child can be resized, do it. */
3241 if (resize_fixed_p
|| !window_fixed_size_p (c
, width_p
, 0))
3243 new_size
= new_sizes
? new_sizes
[n
] : old_size
+ each
+ extra
;
3247 /* Set new size. Note that size_window also propagates
3248 edge positions to children, so it's not a no-op if we
3249 didn't change the child's size. */
3250 size_window (child
, new_size
, width_p
, 1, first_only
, last_only
);
3252 /* Remember the bottom/right edge position of this child; it
3253 will be used to set the top/left edge of the next child. */
3254 last_pos
+= new_size
;
3259 /* We should have covered the parent exactly with child windows. */
3260 xassert (size
== last_pos
- first_pos
);
3262 /* Now delete any children that became too small. */
3263 if (nodelete_p
!= 1)
3264 for (child
= *forward
; !NILP (child
); child
= c
->next
)
3268 c
= XWINDOW (child
);
3269 child_size
= WINDOW_TOTAL_SIZE (c
, width_p
);
3270 size_window (child
, child_size
, width_p
, nodelete_p
,
3271 first_only
, last_only
);
3276 /* Set WINDOW's height to HEIGHT, and recursively change the height of
3277 WINDOW's children. NODELETE zero means windows that have become
3278 smaller than window-min-height in the process may be deleted.
3279 NODELETE 1 means never delete windows that become too small in the
3280 process. (The caller should check later and do so if appropriate.)
3281 NODELETE 2 means delete only windows that have become too small to be
3282 displayed correctly. */
3285 set_window_height (window
, height
, nodelete
)
3290 size_window (window
, height
, 0, nodelete
, 0, 0);
3293 /* Set WINDOW's width to WIDTH, and recursively change the width of
3294 WINDOW's children. NODELETE zero means windows that have become
3295 smaller than window-min-width in the process may be deleted.
3296 NODELETE 1 means never delete windows that become too small in the
3297 process. (The caller should check later and do so if appropriate.)
3298 NODELETE 2 means delete only windows that have become too small to be
3299 displayed correctly. */
3302 set_window_width (window
, width
, nodelete
)
3307 size_window (window
, width
, 1, nodelete
, 0, 0);
3310 /* Change window heights in windows rooted in WINDOW by N lines. */
3313 change_window_heights (window
, n
)
3317 struct window
*w
= XWINDOW (window
);
3319 XSETFASTINT (w
->top_line
, XFASTINT (w
->top_line
) + n
);
3320 XSETFASTINT (w
->total_lines
, XFASTINT (w
->total_lines
) - n
);
3322 if (INTEGERP (w
->orig_top_line
))
3323 XSETFASTINT (w
->orig_top_line
, XFASTINT (w
->orig_top_line
) + n
);
3324 if (INTEGERP (w
->orig_total_lines
))
3325 XSETFASTINT (w
->orig_total_lines
, XFASTINT (w
->orig_total_lines
) - n
);
3327 /* Handle just the top child in a vertical split. */
3328 if (!NILP (w
->vchild
))
3329 change_window_heights (w
->vchild
, n
);
3331 /* Adjust all children in a horizontal split. */
3332 for (window
= w
->hchild
; !NILP (window
); window
= w
->next
)
3334 w
= XWINDOW (window
);
3335 change_window_heights (window
, n
);
3340 int window_select_count
;
3342 EXFUN (Fset_window_fringes
, 4);
3343 EXFUN (Fset_window_scroll_bars
, 4);
3346 run_funs (Lisp_Object funs
)
3348 for (; CONSP (funs
); funs
= XCDR (funs
))
3349 if (!EQ (XCAR (funs
), Qt
))
3350 call0 (XCAR (funs
));
3353 static Lisp_Object
select_window_norecord (Lisp_Object window
);
3356 run_window_configuration_change_hook (struct frame
*f
)
3358 int count
= SPECPDL_INDEX ();
3359 Lisp_Object frame
, global_wcch
3360 = Fdefault_value (Qwindow_configuration_change_hook
);
3361 XSETFRAME (frame
, f
);
3363 if (NILP (Vrun_hooks
))
3366 if (SELECTED_FRAME () != f
)
3368 record_unwind_protect (Fselect_frame
, Fselected_frame ());
3369 Fselect_frame (frame
);
3372 /* Use the right buffer. Matters when running the local hooks. */
3373 if (current_buffer
!= XBUFFER (Fwindow_buffer (Qnil
)))
3375 record_unwind_protect (Fset_buffer
, Fcurrent_buffer ());
3376 Fset_buffer (Fwindow_buffer (Qnil
));
3379 /* Look for buffer-local values. */
3381 Lisp_Object windows
= Fwindow_list (frame
, Qlambda
, Qnil
);
3382 for (; CONSP (windows
); windows
= XCDR (windows
))
3384 Lisp_Object window
= XCAR (windows
);
3385 Lisp_Object buffer
= Fwindow_buffer (window
);
3386 if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook
,
3389 int count
= SPECPDL_INDEX ();
3390 record_unwind_protect (select_window_norecord
, Fselected_window ());
3391 select_window_norecord (window
);
3392 run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook
,
3394 unbind_to (count
, Qnil
);
3399 run_funs (global_wcch
);
3400 unbind_to (count
, Qnil
);
3403 /* Make WINDOW display BUFFER as its contents. RUN_HOOKS_P non-zero
3404 means it's allowed to run hooks. See make_frame for a case where
3405 it's not allowed. KEEP_MARGINS_P non-zero means that the current
3406 margins, fringes, and scroll-bar settings of the window are not
3407 reset from the buffer's local settings. */
3410 set_window_buffer (window
, buffer
, run_hooks_p
, keep_margins_p
)
3411 Lisp_Object window
, buffer
;
3412 int run_hooks_p
, keep_margins_p
;
3414 struct window
*w
= XWINDOW (window
);
3415 struct buffer
*b
= XBUFFER (buffer
);
3416 int count
= SPECPDL_INDEX ();
3417 int samebuf
= EQ (buffer
, w
->buffer
);
3421 if (EQ (window
, selected_window
))
3422 b
->last_selected_window
= window
;
3424 /* Let redisplay errors through. */
3425 b
->display_error_modiff
= 0;
3427 /* Update time stamps of buffer display. */
3428 if (INTEGERP (b
->display_count
))
3429 XSETINT (b
->display_count
, XINT (b
->display_count
) + 1);
3430 b
->display_time
= Fcurrent_time ();
3432 XSETFASTINT (w
->window_end_pos
, 0);
3433 XSETFASTINT (w
->window_end_vpos
, 0);
3434 bzero (&w
->last_cursor
, sizeof w
->last_cursor
);
3435 w
->window_end_valid
= Qnil
;
3436 if (!(keep_margins_p
&& samebuf
))
3437 { /* If we're not actually changing the buffer, don't reset hscroll and
3438 vscroll. This case happens for example when called from
3439 change_frame_size_1, where we use a dummy call to
3440 Fset_window_buffer on the frame's selected window (and no other)
3441 just in order to run window-configuration-change-hook.
3442 Resetting hscroll and vscroll here is problematic for things like
3443 image-mode and doc-view-mode since it resets the image's position
3444 whenever we resize the frame. */
3445 w
->hscroll
= w
->min_hscroll
= make_number (0);
3447 set_marker_both (w
->pointm
, buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
3448 set_marker_restricted (w
->start
,
3449 make_number (b
->last_window_start
),
3451 w
->start_at_line_beg
= Qnil
;
3452 w
->force_start
= Qnil
;
3453 XSETFASTINT (w
->last_modified
, 0);
3454 XSETFASTINT (w
->last_overlay_modified
, 0);
3456 /* Maybe we could move this into the `if' but it's not obviously safe and
3457 I doubt it's worth the trouble. */
3458 windows_or_buffers_changed
++;
3460 /* We must select BUFFER for running the window-scroll-functions. */
3461 /* We can't check ! NILP (Vwindow_scroll_functions) here
3462 because that might itself be a local variable. */
3463 if (window_initialized
)
3465 record_unwind_protect (Fset_buffer
, Fcurrent_buffer ());
3466 Fset_buffer (buffer
);
3469 XMARKER (w
->pointm
)->insertion_type
= !NILP (Vwindow_point_insertion_type
);
3471 if (!keep_margins_p
)
3473 /* Set left and right marginal area width etc. from buffer. */
3475 /* This may call adjust_window_margins three times, so
3476 temporarily disable window margins. */
3477 Lisp_Object save_left
= w
->left_margin_cols
;
3478 Lisp_Object save_right
= w
->right_margin_cols
;
3480 w
->left_margin_cols
= w
->right_margin_cols
= Qnil
;
3482 Fset_window_fringes (window
,
3483 b
->left_fringe_width
, b
->right_fringe_width
,
3484 b
->fringes_outside_margins
);
3486 Fset_window_scroll_bars (window
,
3487 b
->scroll_bar_width
,
3488 b
->vertical_scroll_bar_type
, Qnil
);
3490 w
->left_margin_cols
= save_left
;
3491 w
->right_margin_cols
= save_right
;
3493 Fset_window_margins (window
,
3494 b
->left_margin_cols
, b
->right_margin_cols
);
3499 if (! NILP (Vwindow_scroll_functions
))
3500 run_hook_with_args_2 (Qwindow_scroll_functions
, window
,
3501 Fmarker_position (w
->start
));
3502 run_window_configuration_change_hook (XFRAME (WINDOW_FRAME (w
)));
3505 unbind_to (count
, Qnil
);
3509 DEFUN ("set-window-buffer", Fset_window_buffer
, Sset_window_buffer
, 2, 3, 0,
3510 doc
: /* Make WINDOW display BUFFER-OR-NAME as its contents.
3511 WINDOW defaults to the selected window. BUFFER-OR-NAME must be a buffer
3512 or the name of an existing buffer. Optional third argument KEEP-MARGINS
3513 non-nil means that WINDOW's current display margins, fringe widths, and
3514 scroll bar settings are preserved; the default is to reset these from
3515 the local settings for BUFFER-OR-NAME or the frame defaults. Return nil.
3517 This function throws an error when WINDOW is strongly dedicated to its
3518 buffer (that is `window-dedicated-p' returns t for WINDOW) and does not
3519 already display BUFFER-OR-NAME.
3521 This function runs `window-scroll-functions' before running
3522 `window-configuration-change-hook'. */)
3523 (window
, buffer_or_name
, keep_margins
)
3524 register Lisp_Object window
, buffer_or_name
, keep_margins
;
3526 register Lisp_Object tem
, buffer
;
3527 register struct window
*w
= decode_window (window
);
3529 XSETWINDOW (window
, w
);
3530 buffer
= Fget_buffer (buffer_or_name
);
3531 CHECK_BUFFER (buffer
);
3532 if (NILP (XBUFFER (buffer
)->name
))
3533 error ("Attempt to display deleted buffer");
3537 error ("Window is deleted");
3538 else if (!EQ (tem
, Qt
))
3539 /* w->buffer is t when the window is first being set up. */
3541 if (!EQ (tem
, buffer
))
3542 if (EQ (w
->dedicated
, Qt
))
3543 error ("Window is dedicated to `%s'", SDATA (XBUFFER (tem
)->name
));
3545 w
->dedicated
= Qnil
;
3550 set_window_buffer (window
, buffer
, 1, !NILP (keep_margins
));
3554 /* Note that selected_window can be nil when this is called from
3555 Fset_window_configuration. */
3557 DEFUN ("select-window", Fselect_window
, Sselect_window
, 1, 2, 0,
3558 doc
: /* Select WINDOW. Most editing will apply to WINDOW's buffer.
3559 If WINDOW is not already selected, make WINDOW's buffer current
3560 and make WINDOW the frame's selected window. Return WINDOW.
3561 Optional second arg NORECORD non-nil means do not put this buffer
3562 at the front of the list of recently selected ones.
3564 Note that the main editor command loop selects the buffer of the
3565 selected window before each command. */)
3567 register Lisp_Object window
, norecord
;
3569 register struct window
*w
;
3570 register struct window
*ow
;
3573 CHECK_LIVE_WINDOW (window
);
3575 w
= XWINDOW (window
);
3576 w
->frozen_window_start_p
= 0;
3578 if (NILP (norecord
))
3580 ++window_select_count
;
3581 XSETFASTINT (w
->use_time
, window_select_count
);
3584 if (EQ (window
, selected_window
))
3587 sf
= SELECTED_FRAME ();
3588 if (XFRAME (WINDOW_FRAME (w
)) != sf
)
3590 XFRAME (WINDOW_FRAME (w
))->selected_window
= window
;
3591 /* Use this rather than Fhandle_switch_frame
3592 so that FRAME_FOCUS_FRAME is moved appropriately as we
3593 move around in the state where a minibuffer in a separate
3595 Fselect_frame (WINDOW_FRAME (w
));
3596 /* Fselect_frame called us back so we've done all the work already. */
3597 eassert (EQ (window
, selected_window
));
3601 sf
->selected_window
= window
;
3603 /* Store the current buffer's actual point into the
3604 old selected window. It belongs to that window,
3605 and when the window is not selected, must be in the window. */
3606 if (!NILP (selected_window
))
3608 ow
= XWINDOW (selected_window
);
3609 if (! NILP (ow
->buffer
))
3610 set_marker_both (ow
->pointm
, ow
->buffer
,
3611 BUF_PT (XBUFFER (ow
->buffer
)),
3612 BUF_PT_BYTE (XBUFFER (ow
->buffer
)));
3615 selected_window
= window
;
3617 if (NILP (norecord
))
3618 record_buffer (w
->buffer
);
3619 Fset_buffer (w
->buffer
);
3621 XBUFFER (w
->buffer
)->last_selected_window
= window
;
3623 /* Go to the point recorded in the window.
3624 This is important when the buffer is in more
3625 than one window. It also matters when
3626 redisplay_window has altered point after scrolling,
3627 because it makes the change only in the window. */
3629 register int new_point
= marker_position (w
->pointm
);
3630 if (new_point
< BEGV
)
3632 else if (new_point
> ZV
)
3638 windows_or_buffers_changed
++;
3643 select_window_norecord (window
)
3646 return Fselect_window (window
, Qt
);
3650 display_buffer (buffer
, not_this_window_p
, override_frame
)
3651 Lisp_Object buffer
, not_this_window_p
, override_frame
;
3653 return call3 (Qdisplay_buffer
, buffer
, not_this_window_p
, override_frame
);
3656 DEFUN ("force-window-update", Fforce_window_update
, Sforce_window_update
,
3658 doc
: /* Force all windows to be updated on next redisplay.
3659 If optional arg OBJECT is a window, force redisplay of that window only.
3660 If OBJECT is a buffer or buffer name, force redisplay of all windows
3661 displaying that buffer. */)
3667 windows_or_buffers_changed
++;
3668 update_mode_lines
++;
3672 if (WINDOWP (object
))
3674 struct window
*w
= XWINDOW (object
);
3675 mark_window_display_accurate (object
, 0);
3676 w
->update_mode_line
= Qt
;
3677 if (BUFFERP (w
->buffer
))
3678 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
3679 ++update_mode_lines
;
3683 if (STRINGP (object
))
3684 object
= Fget_buffer (object
);
3685 if (BUFFERP (object
) && !NILP (XBUFFER (object
)->name
))
3687 /* Walk all windows looking for buffer, and force update
3688 of each of those windows. */
3690 object
= window_loop (REDISPLAY_BUFFER_WINDOWS
, object
, 0, Qvisible
);
3691 return NILP (object
) ? Qnil
: Qt
;
3694 /* If nothing suitable was found, just return.
3695 We could signal an error, but this feature will typically be used
3696 asynchronously in timers or process sentinels, so we don't. */
3702 temp_output_buffer_show (buf
)
3703 register Lisp_Object buf
;
3705 register struct buffer
*old
= current_buffer
;
3706 register Lisp_Object window
;
3707 register struct window
*w
;
3709 XBUFFER (buf
)->directory
= current_buffer
->directory
;
3712 BUF_SAVE_MODIFF (XBUFFER (buf
)) = MODIFF
;
3716 #if 0 /* rms: there should be no reason for this. */
3717 XBUFFER (buf
)->prevent_redisplay_optimizations_p
= 1;
3719 set_buffer_internal (old
);
3721 if (!NILP (Vtemp_buffer_show_function
))
3722 call1 (Vtemp_buffer_show_function
, buf
);
3725 window
= display_buffer (buf
, Qnil
, Qnil
);
3727 if (!EQ (XWINDOW (window
)->frame
, selected_frame
))
3728 Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window
)));
3729 Vminibuf_scroll_window
= window
;
3730 w
= XWINDOW (window
);
3731 XSETFASTINT (w
->hscroll
, 0);
3732 XSETFASTINT (w
->min_hscroll
, 0);
3733 set_marker_restricted_both (w
->start
, buf
, BEG
, BEG
);
3734 set_marker_restricted_both (w
->pointm
, buf
, BEG
, BEG
);
3736 /* Run temp-buffer-show-hook, with the chosen window selected
3737 and its buffer current. */
3739 if (!NILP (Vrun_hooks
)
3740 && !NILP (Fboundp (Qtemp_buffer_show_hook
))
3741 && !NILP (Fsymbol_value (Qtemp_buffer_show_hook
)))
3743 int count
= SPECPDL_INDEX ();
3744 Lisp_Object prev_window
, prev_buffer
;
3745 prev_window
= selected_window
;
3746 XSETBUFFER (prev_buffer
, old
);
3748 /* Select the window that was chosen, for running the hook.
3749 Note: Both Fselect_window and select_window_norecord may
3750 set-buffer to the buffer displayed in the window,
3751 so we need to save the current buffer. --stef */
3752 record_unwind_protect (Fset_buffer
, prev_buffer
);
3753 record_unwind_protect (select_window_norecord
, prev_window
);
3754 Fselect_window (window
, Qt
);
3755 Fset_buffer (w
->buffer
);
3756 call1 (Vrun_hooks
, Qtemp_buffer_show_hook
);
3757 unbind_to (count
, Qnil
);
3763 make_dummy_parent (window
)
3767 register struct window
*o
, *p
;
3770 o
= XWINDOW (window
);
3771 p
= allocate_window ();
3772 for (i
= 0; i
< VECSIZE (struct window
); ++i
)
3773 ((struct Lisp_Vector
*) p
)->contents
[i
]
3774 = ((struct Lisp_Vector
*)o
)->contents
[i
];
3775 XSETWINDOW (new, p
);
3778 XSETFASTINT (p
->sequence_number
, sequence_number
);
3780 /* Put new into window structure in place of window */
3781 replace_window (window
, new);
3794 DEFUN ("split-window", Fsplit_window
, Ssplit_window
, 0, 3, "",
3795 doc
: /* Split WINDOW, putting SIZE lines in the first of the pair.
3796 WINDOW defaults to selected one and SIZE to half its size.
3797 If optional third arg HORIZONTAL is non-nil, split side by side and put
3798 SIZE columns in the first of the pair. In that case, SIZE includes that
3799 window's scroll bar, or the divider column to its right.
3800 Interactively, all arguments are nil.
3801 Returns the newly created window (which is the lower or rightmost one).
3802 The upper or leftmost window is the original one, and remains selected
3803 if it was selected before.
3805 See Info node `(elisp)Splitting Windows' for more details and examples. */)
3806 (window
, size
, horizontal
)
3807 Lisp_Object window
, size
, horizontal
;
3809 register Lisp_Object
new;
3810 register struct window
*o
, *p
;
3812 register int size_int
;
3815 window
= selected_window
;
3817 CHECK_LIVE_WINDOW (window
);
3819 o
= XWINDOW (window
);
3820 fo
= XFRAME (WINDOW_FRAME (o
));
3824 if (!NILP (horizontal
))
3825 /* Calculate the size of the left-hand window, by dividing
3826 the usable space in columns by two.
3827 We round up, since the left-hand window may include
3828 a dividing line, while the right-hand may not. */
3829 size_int
= (XFASTINT (o
->total_cols
) + 1) >> 1;
3831 size_int
= XFASTINT (o
->total_lines
) >> 1;
3835 CHECK_NUMBER (size
);
3836 size_int
= XINT (size
);
3839 if (MINI_WINDOW_P (o
))
3840 error ("Attempt to split minibuffer window");
3841 else if (window_fixed_size_p (o
, !NILP (horizontal
), 0))
3842 error ("Attempt to split fixed-size window");
3844 if (NILP (horizontal
))
3846 int window_safe_height
= window_min_size_2 (o
, 0, 0);
3848 if (size_int
< window_safe_height
)
3849 error ("Window height %d too small (after splitting)", size_int
);
3850 if (size_int
+ window_safe_height
> XFASTINT (o
->total_lines
))
3851 error ("Window height %d too small (after splitting)",
3852 XFASTINT (o
->total_lines
) - size_int
);
3853 if (NILP (o
->parent
)
3854 || NILP (XWINDOW (o
->parent
)->vchild
))
3856 make_dummy_parent (window
);
3858 XWINDOW (new)->vchild
= window
;
3863 int window_safe_width
= window_min_size_2 (o
, 1, 0);
3865 if (size_int
< window_safe_width
)
3866 error ("Window width %d too small (after splitting)", size_int
);
3867 if (size_int
+ window_safe_width
> XFASTINT (o
->total_cols
))
3868 error ("Window width %d too small (after splitting)",
3869 XFASTINT (o
->total_cols
) - size_int
);
3870 if (NILP (o
->parent
)
3871 || NILP (XWINDOW (o
->parent
)->hchild
))
3873 make_dummy_parent (window
);
3875 XWINDOW (new)->hchild
= window
;
3879 /* Now we know that window's parent is a vertical combination
3880 if we are dividing vertically, or a horizontal combination
3881 if we are making side-by-side windows */
3883 windows_or_buffers_changed
++;
3884 FRAME_WINDOW_SIZES_CHANGED (fo
) = 1;
3885 new = make_window ();
3888 p
->frame
= o
->frame
;
3890 if (!NILP (p
->next
))
3891 XWINDOW (p
->next
)->prev
= new;
3894 p
->parent
= o
->parent
;
3896 p
->window_end_valid
= Qnil
;
3897 bzero (&p
->last_cursor
, sizeof p
->last_cursor
);
3899 /* Duplicate special geometry settings. */
3901 p
->left_margin_cols
= o
->left_margin_cols
;
3902 p
->right_margin_cols
= o
->right_margin_cols
;
3903 p
->left_fringe_width
= o
->left_fringe_width
;
3904 p
->right_fringe_width
= o
->right_fringe_width
;
3905 p
->fringes_outside_margins
= o
->fringes_outside_margins
;
3906 p
->scroll_bar_width
= o
->scroll_bar_width
;
3907 p
->vertical_scroll_bar_type
= o
->vertical_scroll_bar_type
;
3909 /* Apportion the available frame space among the two new windows */
3911 if (!NILP (horizontal
))
3913 p
->total_lines
= o
->total_lines
;
3914 p
->top_line
= o
->top_line
;
3915 XSETFASTINT (p
->total_cols
, XFASTINT (o
->total_cols
) - size_int
);
3916 XSETFASTINT (o
->total_cols
, size_int
);
3917 XSETFASTINT (p
->left_col
, XFASTINT (o
->left_col
) + size_int
);
3918 adjust_window_margins (p
);
3919 adjust_window_margins (o
);
3923 p
->left_col
= o
->left_col
;
3924 p
->total_cols
= o
->total_cols
;
3925 XSETFASTINT (p
->total_lines
, XFASTINT (o
->total_lines
) - size_int
);
3926 XSETFASTINT (o
->total_lines
, size_int
);
3927 XSETFASTINT (p
->top_line
, XFASTINT (o
->top_line
) + size_int
);
3930 /* Adjust glyph matrices. */
3933 Fset_window_buffer (new, o
->buffer
, Qt
);
3937 DEFUN ("enlarge-window", Fenlarge_window
, Senlarge_window
, 1, 2, "p",
3938 doc
: /* Make selected window SIZE lines taller.
3939 Interactively, if no argument is given, make the selected window one
3940 line taller. If optional argument HORIZONTAL is non-nil, make selected
3941 window wider by SIZE columns. If SIZE is negative, shrink the window by
3942 -SIZE lines or columns. Return nil.
3944 This function can delete windows if they get too small. The size of
3945 fixed size windows is not altered by this function. */)
3947 Lisp_Object size
, horizontal
;
3949 CHECK_NUMBER (size
);
3950 enlarge_window (selected_window
, XINT (size
), !NILP (horizontal
));
3952 run_window_configuration_change_hook (SELECTED_FRAME ());
3957 DEFUN ("shrink-window", Fshrink_window
, Sshrink_window
, 1, 2, "p",
3958 doc
: /* Make selected window SIZE lines smaller.
3959 Interactively, if no argument is given, make the selected window one
3960 line smaller. If optional argument HORIZONTAL is non-nil, make the
3961 window narrower by SIZE columns. If SIZE is negative, enlarge selected
3962 window by -SIZE lines or columns. Return nil.
3964 This function can delete windows if they get too small. The size of
3965 fixed size windows is not altered by this function. */)
3967 Lisp_Object size
, horizontal
;
3969 CHECK_NUMBER (size
);
3970 enlarge_window (selected_window
, -XINT (size
), !NILP (horizontal
));
3972 run_window_configuration_change_hook (SELECTED_FRAME ());
3978 window_height (window
)
3981 register struct window
*p
= XWINDOW (window
);
3982 return WINDOW_TOTAL_LINES (p
);
3986 window_width (window
)
3989 register struct window
*p
= XWINDOW (window
);
3990 return WINDOW_TOTAL_COLS (p
);
3995 *(horiz_flag ? &(XWINDOW (w)->left_col) : &(XWINDOW (w)->top_line))
3997 #define CURSIZE(w) \
3998 *(horiz_flag ? &(XWINDOW (w)->total_cols) : &(XWINDOW (w)->total_lines))
4001 /* Enlarge WINDOW by DELTA. HORIZ_FLAG nonzero means enlarge it
4002 horizontally; zero means do it vertically.
4004 Siblings of the selected window are resized to fulfill the size
4005 request. If they become too small in the process, they may be
4009 enlarge_window (window
, delta
, horiz_flag
)
4011 int delta
, horiz_flag
;
4013 Lisp_Object parent
, next
, prev
;
4017 int (*sizefun
) P_ ((Lisp_Object
))
4018 = horiz_flag
? window_width
: window_height
;
4019 void (*setsizefun
) P_ ((Lisp_Object
, int, int))
4020 = (horiz_flag
? set_window_width
: set_window_height
);
4022 /* Give up if this window cannot be resized. */
4023 if (window_fixed_size_p (XWINDOW (window
), horiz_flag
, 1))
4024 error ("Window is not resizable");
4026 /* Find the parent of the selected window. */
4029 p
= XWINDOW (window
);
4035 error ("No other window to side of this one");
4040 ? !NILP (XWINDOW (parent
)->hchild
)
4041 : !NILP (XWINDOW (parent
)->vchild
))
4047 sizep
= &CURSIZE (window
);
4050 register int maxdelta
;
4052 /* Compute the maximum size increment this window can have. */
4054 maxdelta
= (!NILP (parent
) ? (*sizefun
) (parent
) - XINT (*sizep
)
4055 /* This is a main window followed by a minibuffer. */
4056 : !NILP (p
->next
) ? ((*sizefun
) (p
->next
)
4057 - window_min_size (XWINDOW (p
->next
),
4058 horiz_flag
, 0, 0, 0))
4059 /* This is a minibuffer following a main window. */
4060 : !NILP (p
->prev
) ? ((*sizefun
) (p
->prev
)
4061 - window_min_size (XWINDOW (p
->prev
),
4062 horiz_flag
, 0, 0, 0))
4063 /* This is a frame with only one window, a minibuffer-only
4064 or a minibufferless frame. */
4067 if (delta
> maxdelta
)
4068 /* This case traps trying to make the minibuffer
4069 the full frame, or make the only window aside from the
4070 minibuffer the full frame. */
4074 if (XINT (*sizep
) + delta
< window_min_size (XWINDOW (window
),
4075 horiz_flag
, 0, 0, 0))
4077 delete_window (window
);
4084 /* Find the total we can get from other siblings without deleting them. */
4086 for (next
= p
->next
; WINDOWP (next
); next
= XWINDOW (next
)->next
)
4087 maximum
+= (*sizefun
) (next
) - window_min_size (XWINDOW (next
),
4088 horiz_flag
, 0, 0, 0);
4089 for (prev
= p
->prev
; WINDOWP (prev
); prev
= XWINDOW (prev
)->prev
)
4090 maximum
+= (*sizefun
) (prev
) - window_min_size (XWINDOW (prev
),
4091 horiz_flag
, 0, 0, 0);
4093 /* If we can get it all from them without deleting them, do so. */
4094 if (delta
<= maximum
)
4096 Lisp_Object first_unaffected
;
4097 Lisp_Object first_affected
;
4102 first_affected
= window
;
4103 /* Look at one sibling at a time,
4104 moving away from this window in both directions alternately,
4105 and take as much as we can get without deleting that sibling. */
4107 && (!NILP (next
) || !NILP (prev
)))
4111 int this_one
= ((*sizefun
) (next
)
4112 - window_min_size (XWINDOW (next
), horiz_flag
,
4116 if (this_one
> delta
)
4119 (*setsizefun
) (next
, (*sizefun
) (next
) - this_one
, 0);
4120 (*setsizefun
) (window
, XINT (*sizep
) + this_one
, 0);
4125 next
= XWINDOW (next
)->next
;
4133 int this_one
= ((*sizefun
) (prev
)
4134 - window_min_size (XWINDOW (prev
), horiz_flag
,
4138 if (this_one
> delta
)
4141 first_affected
= prev
;
4143 (*setsizefun
) (prev
, (*sizefun
) (prev
) - this_one
, 0);
4144 (*setsizefun
) (window
, XINT (*sizep
) + this_one
, 0);
4149 prev
= XWINDOW (prev
)->prev
;
4153 xassert (delta
== 0);
4155 /* Now recalculate the edge positions of all the windows affected,
4156 based on the new sizes. */
4157 first_unaffected
= next
;
4158 prev
= first_affected
;
4159 for (next
= XWINDOW (prev
)->next
; ! EQ (next
, first_unaffected
);
4160 prev
= next
, next
= XWINDOW (next
)->next
)
4162 XSETINT (CURBEG (next
), XINT (CURBEG (prev
)) + (*sizefun
) (prev
));
4163 /* This does not change size of NEXT,
4164 but it propagates the new top edge to its children */
4165 (*setsizefun
) (next
, (*sizefun
) (next
), 0);
4170 register int delta1
;
4171 register int opht
= (*sizefun
) (parent
);
4173 if (opht
<= XINT (*sizep
) + delta
)
4175 /* If trying to grow this window to or beyond size of the parent,
4176 just delete all the sibling windows. */
4177 Lisp_Object start
, tem
, next
;
4179 start
= XWINDOW (parent
)->vchild
;
4181 start
= XWINDOW (parent
)->hchild
;
4183 /* Delete any siblings that come after WINDOW. */
4184 tem
= XWINDOW (window
)->next
;
4185 while (! NILP (tem
))
4187 next
= XWINDOW (tem
)->next
;
4188 delete_window (tem
);
4192 /* Delete any siblings that come after WINDOW.
4193 Note that if START is not WINDOW, then WINDOW still
4194 has siblings, so WINDOW has not yet replaced its parent. */
4196 while (! EQ (tem
, window
))
4198 next
= XWINDOW (tem
)->next
;
4199 delete_window (tem
);
4205 /* Otherwise, make delta1 just right so that if we add
4206 delta1 lines to this window and to the parent, and then
4207 shrink the parent back to its original size, the new
4208 proportional size of this window will increase by delta.
4210 The function size_window will compute the new height h'
4211 of the window from delta1 as:
4214 x = delta1 - delta1/n * n for the 1st resizable child
4217 where n is the number of children that can be resized.
4218 We can ignore x by choosing a delta1 that is a multiple of
4219 n. We want the height of this window to come out as
4229 The number of children n equals the number of resizable
4230 children of this window + 1 because we know window itself
4231 is resizable (otherwise we would have signaled an error).
4233 This reasoning is not correct when other windows become too
4234 small and shrink_windows refuses to delete them. Below we
4235 use resize_proportionally to work around this problem. */
4237 struct window
*w
= XWINDOW (window
);
4241 for (s
= w
->next
; WINDOWP (s
); s
= XWINDOW (s
)->next
)
4242 if (!window_fixed_size_p (XWINDOW (s
), horiz_flag
, 0))
4244 for (s
= w
->prev
; WINDOWP (s
); s
= XWINDOW (s
)->prev
)
4245 if (!window_fixed_size_p (XWINDOW (s
), horiz_flag
, 0))
4250 /* Add delta1 lines or columns to this window, and to the parent,
4251 keeping things consistent while not affecting siblings. */
4252 XSETINT (CURSIZE (parent
), opht
+ delta1
);
4253 (*setsizefun
) (window
, XINT (*sizep
) + delta1
, 0);
4255 /* Squeeze out delta1 lines or columns from our parent,
4256 shrinking this window and siblings proportionately. This
4257 brings parent back to correct size. Delta1 was calculated
4258 so this makes this window the desired size, taking it all
4259 out of the siblings.
4261 Temporarily set resize_proportionally to Qt to assure that,
4262 if necessary, shrink_windows deletes smaller windows rather
4263 than shrink this window. */
4264 w
->resize_proportionally
= Qt
;
4265 (*setsizefun
) (parent
, opht
, 0);
4266 w
->resize_proportionally
= Qnil
;
4270 XSETFASTINT (p
->last_modified
, 0);
4271 XSETFASTINT (p
->last_overlay_modified
, 0);
4273 /* Adjust glyph matrices. */
4274 adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window
))));
4278 /* Adjust the size of WINDOW by DELTA, moving only its trailing edge.
4279 HORIZ_FLAG nonzero means adjust the width, moving the right edge.
4280 zero means adjust the height, moving the bottom edge.
4282 Following siblings of the selected window are resized to fulfill
4283 the size request. If they become too small in the process, they
4284 are not deleted; instead, we signal an error. */
4287 adjust_window_trailing_edge (window
, delta
, horiz_flag
)
4289 int delta
, horiz_flag
;
4291 Lisp_Object parent
, child
;
4293 Lisp_Object old_config
= Fcurrent_window_configuration (Qnil
);
4294 int delcount
= window_deletion_count
;
4296 CHECK_WINDOW (window
);
4298 /* Give up if this window cannot be resized. */
4299 if (window_fixed_size_p (XWINDOW (window
), horiz_flag
, 1))
4300 error ("Window is not resizable");
4304 Lisp_Object first_parallel
= Qnil
;
4308 /* This happens if WINDOW on the previous iteration was
4309 at top level of the window tree. */
4310 Fset_window_configuration (old_config
);
4311 error ("Specified window edge is fixed");
4314 p
= XWINDOW (window
);
4317 /* See if this level has windows in parallel in the specified
4318 direction. If so, set FIRST_PARALLEL to the first one. */
4321 if (! NILP (parent
) && !NILP (XWINDOW (parent
)->vchild
))
4322 first_parallel
= XWINDOW (parent
)->vchild
;
4323 else if (NILP (parent
) && !NILP (p
->next
))
4325 /* Handle the vertical chain of main window and minibuffer
4326 which has no parent. */
4327 first_parallel
= window
;
4328 while (! NILP (XWINDOW (first_parallel
)->prev
))
4329 first_parallel
= XWINDOW (first_parallel
)->prev
;
4334 if (! NILP (parent
) && !NILP (XWINDOW (parent
)->hchild
))
4335 first_parallel
= XWINDOW (parent
)->hchild
;
4338 /* If this level's succession is in the desired dimension,
4339 and this window is the last one, and there is no higher level,
4340 its trailing edge is fixed. */
4341 if (NILP (XWINDOW (window
)->next
) && NILP (first_parallel
)
4344 Fset_window_configuration (old_config
);
4345 error ("Specified window edge is fixed");
4348 /* Don't make this window too small. */
4349 if (XINT (CURSIZE (window
)) + delta
4350 < window_min_size_2 (XWINDOW (window
), horiz_flag
, 0))
4352 Fset_window_configuration (old_config
);
4353 error ("Cannot adjust window size as specified");
4356 /* Clear out some redisplay caches. */
4357 XSETFASTINT (p
->last_modified
, 0);
4358 XSETFASTINT (p
->last_overlay_modified
, 0);
4360 /* Adjust this window's edge. */
4361 XSETINT (CURSIZE (window
),
4362 XINT (CURSIZE (window
)) + delta
);
4364 /* If this window has following siblings in the desired dimension,
4365 make them smaller, and exit the loop.
4367 (If we reach the top of the tree and can never do this,
4368 we will fail and report an error, above.) */
4369 if (NILP (first_parallel
))
4371 if (!NILP (p
->next
))
4373 /* This may happen for the minibuffer. In that case
4374 the window_deletion_count check below does not work. */
4375 if (XINT (CURSIZE (p
->next
)) - delta
<= 0)
4377 Fset_window_configuration (old_config
);
4378 error ("Cannot adjust window size as specified");
4381 XSETINT (CURBEG (p
->next
),
4382 XINT (CURBEG (p
->next
)) + delta
);
4383 size_window (p
->next
, XINT (CURSIZE (p
->next
)) - delta
,
4384 horiz_flag
, 0, 1, 0);
4389 /* Here we have a chain of parallel siblings, in the other dimension.
4390 Change the size of the other siblings. */
4391 for (child
= first_parallel
;
4393 child
= XWINDOW (child
)->next
)
4394 if (! EQ (child
, window
))
4395 size_window (child
, XINT (CURSIZE (child
)) + delta
,
4396 horiz_flag
, 0, 0, 1);
4401 /* If we made a window so small it got deleted,
4402 we failed. Report failure. */
4403 if (delcount
!= window_deletion_count
)
4405 Fset_window_configuration (old_config
);
4406 error ("Cannot adjust window size as specified");
4409 /* Adjust glyph matrices. */
4410 adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window
))));
4416 DEFUN ("adjust-window-trailing-edge", Fadjust_window_trailing_edge
,
4417 Sadjust_window_trailing_edge
, 3, 3, 0,
4418 doc
: /* Adjust the bottom or right edge of WINDOW by DELTA.
4419 If HORIZONTAL is non-nil, that means adjust the width, moving the right edge.
4420 Otherwise, adjust the height, moving the bottom edge.
4422 Following siblings of the selected window are resized to fulfill
4423 the size request. If they become too small in the process, they
4424 are not deleted; instead, we signal an error. */)
4425 (window
, delta
, horizontal
)
4426 Lisp_Object window
, delta
, horizontal
;
4428 CHECK_NUMBER (delta
);
4430 window
= selected_window
;
4431 adjust_window_trailing_edge (window
, XINT (delta
), !NILP (horizontal
));
4433 run_window_configuration_change_hook
4434 (XFRAME (WINDOW_FRAME (XWINDOW (window
))));
4441 /***********************************************************************
4442 Resizing Mini-Windows
4443 ***********************************************************************/
4445 static void shrink_window_lowest_first
P_ ((struct window
*, int));
4447 enum save_restore_action
4454 static int save_restore_orig_size
P_ ((struct window
*,
4455 enum save_restore_action
));
4457 /* Shrink windows rooted in window W to HEIGHT. Take the space needed
4458 from lowest windows first. */
4461 shrink_window_lowest_first (w
, height
)
4469 xassert (!MINI_WINDOW_P (w
));
4471 /* Set redisplay hints. */
4472 XSETFASTINT (w
->last_modified
, 0);
4473 XSETFASTINT (w
->last_overlay_modified
, 0);
4474 windows_or_buffers_changed
++;
4475 FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w
))) = 1;
4477 old_height
= XFASTINT (w
->total_lines
);
4478 XSETFASTINT (w
->total_lines
, height
);
4480 if (!NILP (w
->hchild
))
4482 for (child
= w
->hchild
; !NILP (child
); child
= c
->next
)
4484 c
= XWINDOW (child
);
4485 c
->top_line
= w
->top_line
;
4486 shrink_window_lowest_first (c
, height
);
4489 else if (!NILP (w
->vchild
))
4491 Lisp_Object last_child
;
4492 int delta
= old_height
- height
;
4497 /* Find the last child. We are taking space from lowest windows
4498 first, so we iterate over children from the last child
4500 for (child
= w
->vchild
; WINDOWP (child
); child
= XWINDOW (child
)->next
)
4503 /* Size children down to their safe heights. */
4504 for (child
= last_child
; delta
&& !NILP (child
); child
= c
->prev
)
4508 c
= XWINDOW (child
);
4509 this_one
= XFASTINT (c
->total_lines
) - window_min_size_1 (c
, 0, 1);
4511 if (this_one
> delta
)
4514 shrink_window_lowest_first (c
, XFASTINT (c
->total_lines
) - this_one
);
4518 /* Compute new positions. */
4519 last_top
= XINT (w
->top_line
);
4520 for (child
= w
->vchild
; !NILP (child
); child
= c
->next
)
4522 c
= XWINDOW (child
);
4523 c
->top_line
= make_number (last_top
);
4524 shrink_window_lowest_first (c
, XFASTINT (c
->total_lines
));
4525 last_top
+= XFASTINT (c
->total_lines
);
4531 /* Save, restore, or check positions and sizes in the window tree
4532 rooted at W. ACTION says what to do.
4534 If ACTION is CHECK_ORIG_SIZES, check if orig_top_line and
4535 orig_total_lines members are valid for all windows in the window
4536 tree. Value is non-zero if they are valid.
4538 If ACTION is SAVE_ORIG_SIZES, save members top and height in
4539 orig_top_line and orig_total_lines for all windows in the tree.
4541 If ACTION is RESTORE_ORIG_SIZES, restore top and height from values
4542 stored in orig_top_line and orig_total_lines for all windows. */
4545 save_restore_orig_size (w
, action
)
4547 enum save_restore_action action
;
4553 if (!NILP (w
->hchild
))
4555 if (!save_restore_orig_size (XWINDOW (w
->hchild
), action
))
4558 else if (!NILP (w
->vchild
))
4560 if (!save_restore_orig_size (XWINDOW (w
->vchild
), action
))
4566 case CHECK_ORIG_SIZES
:
4567 if (!INTEGERP (w
->orig_top_line
) || !INTEGERP (w
->orig_total_lines
))
4571 case SAVE_ORIG_SIZES
:
4572 w
->orig_top_line
= w
->top_line
;
4573 w
->orig_total_lines
= w
->total_lines
;
4574 XSETFASTINT (w
->last_modified
, 0);
4575 XSETFASTINT (w
->last_overlay_modified
, 0);
4578 case RESTORE_ORIG_SIZES
:
4579 xassert (INTEGERP (w
->orig_top_line
) && INTEGERP (w
->orig_total_lines
));
4580 w
->top_line
= w
->orig_top_line
;
4581 w
->total_lines
= w
->orig_total_lines
;
4582 w
->orig_total_lines
= w
->orig_top_line
= Qnil
;
4583 XSETFASTINT (w
->last_modified
, 0);
4584 XSETFASTINT (w
->last_overlay_modified
, 0);
4591 w
= NILP (w
->next
) ? NULL
: XWINDOW (w
->next
);
4598 /* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can
4599 without deleting other windows. */
4602 grow_mini_window (w
, delta
)
4606 struct frame
*f
= XFRAME (w
->frame
);
4607 struct window
*root
;
4609 xassert (MINI_WINDOW_P (w
));
4610 xassert (delta
>= 0);
4612 /* Compute how much we can enlarge the mini-window without deleting
4614 root
= XWINDOW (FRAME_ROOT_WINDOW (f
));
4617 int min_height
= window_min_size (root
, 0, 0, 0, 0);
4618 if (XFASTINT (root
->total_lines
) - delta
< min_height
)
4619 /* Note that the root window may already be smaller than
4621 delta
= max (0, XFASTINT (root
->total_lines
) - min_height
);
4626 /* Save original window sizes and positions, if not already done. */
4627 if (!save_restore_orig_size (root
, CHECK_ORIG_SIZES
))
4628 save_restore_orig_size (root
, SAVE_ORIG_SIZES
);
4630 /* Shrink other windows. */
4631 shrink_window_lowest_first (root
, XFASTINT (root
->total_lines
) - delta
);
4633 /* Grow the mini-window. */
4634 w
->top_line
= make_number (XFASTINT (root
->top_line
) + XFASTINT (root
->total_lines
));
4635 w
->total_lines
= make_number (XFASTINT (w
->total_lines
) + delta
);
4636 XSETFASTINT (w
->last_modified
, 0);
4637 XSETFASTINT (w
->last_overlay_modified
, 0);
4644 /* Shrink mini-window W. If there is recorded info about window sizes
4645 before a call to grow_mini_window, restore recorded window sizes.
4646 Otherwise, if the mini-window is higher than 1 line, resize it to 1
4650 shrink_mini_window (w
)
4653 struct frame
*f
= XFRAME (w
->frame
);
4654 struct window
*root
= XWINDOW (FRAME_ROOT_WINDOW (f
));
4656 if (save_restore_orig_size (root
, CHECK_ORIG_SIZES
))
4658 save_restore_orig_size (root
, RESTORE_ORIG_SIZES
);
4660 FRAME_WINDOW_SIZES_CHANGED (f
) = 1;
4661 windows_or_buffers_changed
= 1;
4663 else if (XFASTINT (w
->total_lines
) > 1)
4665 /* Distribute the additional lines of the mini-window
4666 among the other windows. */
4668 XSETWINDOW (window
, w
);
4669 enlarge_window (window
, 1 - XFASTINT (w
->total_lines
), 0);
4675 /* Mark window cursors off for all windows in the window tree rooted
4676 at W by setting their phys_cursor_on_p flag to zero. Called from
4677 xterm.c, e.g. when a frame is cleared and thereby all cursors on
4678 the frame are cleared. */
4681 mark_window_cursors_off (w
)
4686 if (!NILP (w
->hchild
))
4687 mark_window_cursors_off (XWINDOW (w
->hchild
));
4688 else if (!NILP (w
->vchild
))
4689 mark_window_cursors_off (XWINDOW (w
->vchild
));
4691 w
->phys_cursor_on_p
= 0;
4693 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
4698 /* Return number of lines of text (not counting mode lines) in W. */
4701 window_internal_height (w
)
4704 int ht
= XFASTINT (w
->total_lines
);
4706 if (!MINI_WINDOW_P (w
))
4708 if (!NILP (w
->parent
)
4709 || !NILP (w
->vchild
)
4710 || !NILP (w
->hchild
)
4713 || WINDOW_WANTS_MODELINE_P (w
))
4716 if (WINDOW_WANTS_HEADER_LINE_P (w
))
4724 /* Return the number of columns in W.
4725 Don't count columns occupied by scroll bars or the vertical bar
4726 separating W from the sibling to its right. */
4729 window_box_text_cols (w
)
4732 struct frame
*f
= XFRAME (WINDOW_FRAME (w
));
4733 int width
= XINT (w
->total_cols
);
4735 if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w
))
4736 /* Scroll bars occupy a few columns. */
4737 width
-= WINDOW_CONFIG_SCROLL_BAR_COLS (w
);
4738 else if (!FRAME_WINDOW_P (f
)
4739 && !WINDOW_RIGHTMOST_P (w
) && !WINDOW_FULL_WIDTH_P (w
))
4740 /* The column of `|' characters separating side-by-side windows
4741 occupies one column only. */
4744 if (FRAME_WINDOW_P (f
))
4745 /* On window-systems, fringes and display margins cannot be
4746 used for normal text. */
4747 width
-= (WINDOW_FRINGE_COLS (w
)
4748 + WINDOW_LEFT_MARGIN_COLS (w
)
4749 + WINDOW_RIGHT_MARGIN_COLS (w
));
4755 /************************************************************************
4757 ***********************************************************************/
4759 /* Scroll contents of window WINDOW up. If WHOLE is non-zero, scroll
4760 N screen-fulls, which is defined as the height of the window minus
4761 next_screen_context_lines. If WHOLE is zero, scroll up N lines
4762 instead. Negative values of N mean scroll down. NOERROR non-zero
4763 means don't signal an error if we try to move over BEGV or ZV,
4767 window_scroll (window
, n
, whole
, noerror
)
4775 /* If we must, use the pixel-based version which is much slower than
4776 the line-based one but can handle varying line heights. */
4777 if (FRAME_WINDOW_P (XFRAME (XWINDOW (window
)->frame
)))
4778 window_scroll_pixel_based (window
, n
, whole
, noerror
);
4780 window_scroll_line_based (window
, n
, whole
, noerror
);
4786 /* Implementation of window_scroll that works based on pixel line
4787 heights. See the comment of window_scroll for parameter
4791 window_scroll_pixel_based (window
, n
, whole
, noerror
)
4798 struct window
*w
= XWINDOW (window
);
4799 struct text_pos start
;
4800 int this_scroll_margin
;
4801 /* True if we fiddled the window vscroll field without really scrolling. */
4803 int x
, y
, rtop
, rbot
, rowh
, vpos
;
4805 SET_TEXT_POS_FROM_MARKER (start
, w
->start
);
4807 /* If PT is not visible in WINDOW, move back one half of
4808 the screen. Allow PT to be partially visible, otherwise
4809 something like (scroll-down 1) with PT in the line before
4810 the partially visible one would recenter. */
4812 if (!pos_visible_p (w
, PT
, &x
, &y
, &rtop
, &rbot
, &rowh
, &vpos
))
4814 /* Move backward half the height of the window. Performance note:
4815 vmotion used here is about 10% faster, but would give wrong
4816 results for variable height lines. */
4817 init_iterator (&it
, w
, PT
, PT_BYTE
, NULL
, DEFAULT_FACE_ID
);
4818 it
.current_y
= it
.last_visible_y
;
4819 move_it_vertically_backward (&it
, window_box_height (w
) / 2);
4821 /* The function move_iterator_vertically may move over more than
4822 the specified y-distance. If it->w is small, e.g. a
4823 mini-buffer window, we may end up in front of the window's
4824 display area. This is the case when Start displaying at the
4825 start of the line containing PT in this case. */
4826 if (it
.current_y
<= 0)
4828 init_iterator (&it
, w
, PT
, PT_BYTE
, NULL
, DEFAULT_FACE_ID
);
4829 move_it_vertically_backward (&it
, 0);
4833 start
= it
.current
.pos
;
4835 else if (auto_window_vscroll_p
)
4837 if (rtop
|| rbot
) /* partially visible */
4840 int dy
= WINDOW_FRAME_LINE_HEIGHT (w
);
4842 dy
= max ((window_box_height (w
)
4843 - next_screen_context_lines
* dy
),
4849 /* Only vscroll backwards if already vscrolled forwards. */
4850 if (w
->vscroll
< 0 && rtop
> 0)
4852 px
= max (0, -w
->vscroll
- min (rtop
, -dy
));
4853 Fset_window_vscroll (window
, make_number (px
), Qt
);
4859 /* Do vscroll if already vscrolled or only display line. */
4860 if (rbot
> 0 && (w
->vscroll
< 0 || vpos
== 0))
4862 px
= max (0, -w
->vscroll
+ min (rbot
, dy
));
4863 Fset_window_vscroll (window
, make_number (px
), Qt
);
4867 /* Maybe modify window start instead of scrolling. */
4868 if (rbot
> 0 || w
->vscroll
< 0)
4872 Fset_window_vscroll (window
, make_number (0), Qt
);
4873 /* If there are other text lines above the current row,
4874 move window start to current row. Else to next row. */
4876 spos
= XINT (Fline_beginning_position (Qnil
));
4878 spos
= min (XINT (Fline_end_position (Qnil
)) + 1, ZV
);
4879 set_marker_restricted (w
->start
, make_number (spos
),
4881 w
->start_at_line_beg
= Qt
;
4882 w
->update_mode_line
= Qt
;
4883 XSETFASTINT (w
->last_modified
, 0);
4884 XSETFASTINT (w
->last_overlay_modified
, 0);
4885 /* Set force_start so that redisplay_window will run the
4886 window-scroll-functions. */
4887 w
->force_start
= Qt
;
4892 /* Cancel previous vscroll. */
4893 Fset_window_vscroll (window
, make_number (0), Qt
);
4896 /* If scroll_preserve_screen_position is non-nil, we try to set
4897 point in the same window line as it is now, so get that line. */
4898 if (!NILP (Vscroll_preserve_screen_position
))
4900 /* We preserve the goal pixel coordinate across consecutive
4901 calls to scroll-up or scroll-down. This avoids the
4902 possibility of point becoming "stuck" on a tall line when
4903 scrolling by one line. */
4904 if (window_scroll_pixel_based_preserve_y
< 0
4905 || (!EQ (current_kboard
->Vlast_command
, Qscroll_up
)
4906 && !EQ (current_kboard
->Vlast_command
, Qscroll_down
)))
4908 start_display (&it
, w
, start
);
4909 move_it_to (&it
, PT
, -1, -1, -1, MOVE_TO_POS
);
4910 window_scroll_pixel_based_preserve_y
= it
.current_y
;
4911 window_scroll_pixel_based_preserve_x
= it
.current_x
;
4915 window_scroll_pixel_based_preserve_y
4916 = window_scroll_pixel_based_preserve_x
= -1;
4918 /* Move iterator it from start the specified distance forward or
4919 backward. The result is the new window start. */
4920 start_display (&it
, w
, start
);
4923 int start_pos
= IT_CHARPOS (it
);
4924 int dy
= WINDOW_FRAME_LINE_HEIGHT (w
);
4925 dy
= max ((window_box_height (w
)
4926 - next_screen_context_lines
* dy
),
4929 /* Note that move_it_vertically always moves the iterator to the
4930 start of a line. So, if the last line doesn't have a newline,
4931 we would end up at the start of the line ending at ZV. */
4934 move_it_vertically_backward (&it
, -dy
);
4935 /* Ensure we actually do move, e.g. in case we are currently
4936 looking at an image that is taller that the window height. */
4937 while (start_pos
== IT_CHARPOS (it
)
4938 && start_pos
> BEGV
)
4939 move_it_by_lines (&it
, -1, 1);
4943 move_it_to (&it
, ZV
, -1, it
.current_y
+ dy
, -1,
4944 MOVE_TO_POS
| MOVE_TO_Y
);
4945 /* Ensure we actually do move, e.g. in case we are currently
4946 looking at an image that is taller that the window height. */
4947 while (start_pos
== IT_CHARPOS (it
)
4949 move_it_by_lines (&it
, 1, 1);
4953 move_it_by_lines (&it
, n
, 1);
4955 /* We failed if we find ZV is already on the screen (scrolling up,
4956 means there's nothing past the end), or if we can't start any
4957 earlier (scrolling down, means there's nothing past the top). */
4958 if ((n
> 0 && IT_CHARPOS (it
) == ZV
)
4959 || (n
< 0 && IT_CHARPOS (it
) == CHARPOS (start
)))
4961 if (IT_CHARPOS (it
) == ZV
)
4963 if (it
.current_y
< it
.last_visible_y
4964 && (it
.current_y
+ it
.max_ascent
+ it
.max_descent
4965 > it
.last_visible_y
))
4967 /* The last line was only partially visible, make it fully
4969 w
->vscroll
= (it
.last_visible_y
4970 - it
.current_y
+ it
.max_ascent
+ it
.max_descent
);
4971 adjust_glyphs (it
.f
);
4975 else if (n
< 0) /* could happen with empty buffers */
4976 xsignal0 (Qbeginning_of_buffer
);
4978 xsignal0 (Qend_of_buffer
);
4982 if (w
->vscroll
!= 0)
4983 /* The first line was only partially visible, make it fully
4989 xsignal0 (Qbeginning_of_buffer
);
4992 /* If control gets here, then we vscrolled. */
4994 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
4996 /* Don't try to change the window start below. */
5002 int pos
= IT_CHARPOS (it
);
5005 /* If in the middle of a multi-glyph character move forward to
5006 the next character. */
5007 if (in_display_vector_p (&it
))
5010 move_it_to (&it
, pos
, -1, -1, -1, MOVE_TO_POS
);
5013 /* Set the window start, and set up the window for redisplay. */
5014 set_marker_restricted (w
->start
, make_number (pos
),
5016 bytepos
= XMARKER (w
->start
)->bytepos
;
5017 w
->start_at_line_beg
= ((pos
== BEGV
|| FETCH_BYTE (bytepos
- 1) == '\n')
5019 w
->update_mode_line
= Qt
;
5020 XSETFASTINT (w
->last_modified
, 0);
5021 XSETFASTINT (w
->last_overlay_modified
, 0);
5022 /* Set force_start so that redisplay_window will run the
5023 window-scroll-functions. */
5024 w
->force_start
= Qt
;
5027 /* The rest of this function uses current_y in a nonstandard way,
5028 not including the height of the header line if any. */
5029 it
.current_y
= it
.vpos
= 0;
5031 /* Move PT out of scroll margins.
5032 This code wants current_y to be zero at the window start position
5033 even if there is a header line. */
5034 this_scroll_margin
= max (0, scroll_margin
);
5035 this_scroll_margin
= min (this_scroll_margin
, XFASTINT (w
->total_lines
) / 4);
5036 this_scroll_margin
*= FRAME_LINE_HEIGHT (it
.f
);
5040 /* We moved the window start towards ZV, so PT may be now
5041 in the scroll margin at the top. */
5042 move_it_to (&it
, PT
, -1, -1, -1, MOVE_TO_POS
);
5043 if (IT_CHARPOS (it
) == PT
&& it
.current_y
>= this_scroll_margin
5044 && (NILP (Vscroll_preserve_screen_position
)
5045 || EQ (Vscroll_preserve_screen_position
, Qt
)))
5046 /* We found PT at a legitimate height. Leave it alone. */
5048 else if (window_scroll_pixel_based_preserve_y
>= 0)
5050 /* If we have a header line, take account of it.
5051 This is necessary because we set it.current_y to 0, above. */
5052 move_it_to (&it
, -1,
5053 window_scroll_pixel_based_preserve_x
,
5054 window_scroll_pixel_based_preserve_y
5055 - (WINDOW_WANTS_HEADER_LINE_P (w
) ? 1 : 0 ),
5056 -1, MOVE_TO_Y
| MOVE_TO_X
);
5057 SET_PT_BOTH (IT_CHARPOS (it
), IT_BYTEPOS (it
));
5061 while (it
.current_y
< this_scroll_margin
)
5063 int prev
= it
.current_y
;
5064 move_it_by_lines (&it
, 1, 1);
5065 if (prev
== it
.current_y
)
5068 SET_PT_BOTH (IT_CHARPOS (it
), IT_BYTEPOS (it
));
5073 int charpos
, bytepos
;
5076 /* Save our position, for the
5077 window_scroll_pixel_based_preserve_y case. */
5078 charpos
= IT_CHARPOS (it
);
5079 bytepos
= IT_BYTEPOS (it
);
5081 /* We moved the window start towards BEGV, so PT may be now
5082 in the scroll margin at the bottom. */
5083 move_it_to (&it
, PT
, -1,
5084 (it
.last_visible_y
- CURRENT_HEADER_LINE_HEIGHT (w
)
5085 - this_scroll_margin
- 1),
5087 MOVE_TO_POS
| MOVE_TO_Y
);
5089 /* Save our position, in case it's correct. */
5090 charpos
= IT_CHARPOS (it
);
5091 bytepos
= IT_BYTEPOS (it
);
5093 /* See if point is on a partially visible line at the end. */
5094 if (it
.what
== IT_EOB
)
5095 partial_p
= it
.current_y
+ it
.ascent
+ it
.descent
> it
.last_visible_y
;
5098 move_it_by_lines (&it
, 1, 1);
5099 partial_p
= it
.current_y
> it
.last_visible_y
;
5102 if (charpos
== PT
&& !partial_p
5103 && (NILP (Vscroll_preserve_screen_position
)
5104 || EQ (Vscroll_preserve_screen_position
, Qt
)))
5105 /* We found PT before we found the display margin, so PT is ok. */
5107 else if (window_scroll_pixel_based_preserve_y
>= 0)
5109 SET_TEXT_POS_FROM_MARKER (start
, w
->start
);
5110 start_display (&it
, w
, start
);
5111 /* It would be wrong to subtract CURRENT_HEADER_LINE_HEIGHT
5112 here because we called start_display again and did not
5113 alter it.current_y this time. */
5114 move_it_to (&it
, -1, window_scroll_pixel_based_preserve_x
,
5115 window_scroll_pixel_based_preserve_y
, -1,
5116 MOVE_TO_Y
| MOVE_TO_X
);
5117 SET_PT_BOTH (IT_CHARPOS (it
), IT_BYTEPOS (it
));
5122 /* The last line was only partially visible, so back up two
5123 lines to make sure we're on a fully visible line. */
5125 move_it_by_lines (&it
, -2, 0);
5126 SET_PT_BOTH (IT_CHARPOS (it
), IT_BYTEPOS (it
));
5129 /* No, the position we saved is OK, so use it. */
5130 SET_PT_BOTH (charpos
, bytepos
);
5136 /* Implementation of window_scroll that works based on screen lines.
5137 See the comment of window_scroll for parameter descriptions. */
5140 window_scroll_line_based (window
, n
, whole
, noerror
)
5146 register struct window
*w
= XWINDOW (window
);
5147 register int opoint
= PT
, opoint_byte
= PT_BYTE
;
5148 register int pos
, pos_byte
;
5149 register int ht
= window_internal_height (w
);
5150 register Lisp_Object tem
;
5154 Lisp_Object original_pos
= Qnil
;
5156 /* If scrolling screen-fulls, compute the number of lines to
5157 scroll from the window's height. */
5159 n
*= max (1, ht
- next_screen_context_lines
);
5161 startpos
= marker_position (w
->start
);
5163 if (!NILP (Vscroll_preserve_screen_position
))
5165 if (window_scroll_preserve_vpos
<= 0
5166 || (!EQ (current_kboard
->Vlast_command
, Qscroll_up
)
5167 && !EQ (current_kboard
->Vlast_command
, Qscroll_down
)))
5169 struct position posit
5170 = *compute_motion (startpos
, 0, 0, 0,
5172 -1, XINT (w
->hscroll
),
5174 window_scroll_preserve_vpos
= posit
.vpos
;
5175 window_scroll_preserve_hpos
= posit
.hpos
+ XINT (w
->hscroll
);
5178 original_pos
= Fcons (make_number (window_scroll_preserve_hpos
),
5179 make_number (window_scroll_preserve_vpos
));
5182 XSETFASTINT (tem
, PT
);
5183 tem
= Fpos_visible_in_window_p (tem
, window
, Qnil
);
5187 Fvertical_motion (make_number (- (ht
/ 2)), window
);
5192 lose
= n
< 0 && PT
== BEGV
;
5193 Fvertical_motion (make_number (n
), window
);
5197 SET_PT_BOTH (opoint
, opoint_byte
);
5204 xsignal0 (Qbeginning_of_buffer
);
5209 int this_scroll_margin
= scroll_margin
;
5211 /* Don't use a scroll margin that is negative or too large. */
5212 if (this_scroll_margin
< 0)
5213 this_scroll_margin
= 0;
5215 if (XINT (w
->total_lines
) < 4 * scroll_margin
)
5216 this_scroll_margin
= XINT (w
->total_lines
) / 4;
5218 set_marker_restricted_both (w
->start
, w
->buffer
, pos
, pos_byte
);
5219 w
->start_at_line_beg
= bolp
;
5220 w
->update_mode_line
= Qt
;
5221 XSETFASTINT (w
->last_modified
, 0);
5222 XSETFASTINT (w
->last_overlay_modified
, 0);
5223 /* Set force_start so that redisplay_window will run
5224 the window-scroll-functions. */
5225 w
->force_start
= Qt
;
5227 if (!NILP (Vscroll_preserve_screen_position
)
5228 && (whole
|| !EQ (Vscroll_preserve_screen_position
, Qt
)))
5230 SET_PT_BOTH (pos
, pos_byte
);
5231 Fvertical_motion (original_pos
, window
);
5233 /* If we scrolled forward, put point enough lines down
5234 that it is outside the scroll margin. */
5239 if (this_scroll_margin
> 0)
5241 SET_PT_BOTH (pos
, pos_byte
);
5242 Fvertical_motion (make_number (this_scroll_margin
), window
);
5248 if (top_margin
<= opoint
)
5249 SET_PT_BOTH (opoint
, opoint_byte
);
5250 else if (!NILP (Vscroll_preserve_screen_position
))
5252 SET_PT_BOTH (pos
, pos_byte
);
5253 Fvertical_motion (original_pos
, window
);
5256 SET_PT (top_margin
);
5262 /* If we scrolled backward, put point near the end of the window
5263 but not within the scroll margin. */
5264 SET_PT_BOTH (pos
, pos_byte
);
5265 tem
= Fvertical_motion (make_number (ht
- this_scroll_margin
), window
);
5266 if (XFASTINT (tem
) == ht
- this_scroll_margin
)
5269 bottom_margin
= PT
+ 1;
5271 if (bottom_margin
> opoint
)
5272 SET_PT_BOTH (opoint
, opoint_byte
);
5275 if (!NILP (Vscroll_preserve_screen_position
))
5277 SET_PT_BOTH (pos
, pos_byte
);
5278 Fvertical_motion (original_pos
, window
);
5281 Fvertical_motion (make_number (-1), window
);
5290 xsignal0 (Qend_of_buffer
);
5295 /* Scroll selected_window up or down. If N is nil, scroll a
5296 screen-full which is defined as the height of the window minus
5297 next_screen_context_lines. If N is the symbol `-', scroll.
5298 DIRECTION may be 1 meaning to scroll down, or -1 meaning to scroll
5299 up. This is the guts of Fscroll_up and Fscroll_down. */
5302 scroll_command (n
, direction
)
5306 int count
= SPECPDL_INDEX ();
5308 xassert (eabs (direction
) == 1);
5310 /* If selected window's buffer isn't current, make it current for
5311 the moment. But don't screw up if window_scroll gets an error. */
5312 if (XBUFFER (XWINDOW (selected_window
)->buffer
) != current_buffer
)
5314 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
5315 Fset_buffer (XWINDOW (selected_window
)->buffer
);
5317 /* Make redisplay consider other windows than just selected_window. */
5318 ++windows_or_buffers_changed
;
5322 window_scroll (selected_window
, direction
, 1, 0);
5323 else if (EQ (n
, Qminus
))
5324 window_scroll (selected_window
, -direction
, 1, 0);
5327 n
= Fprefix_numeric_value (n
);
5328 window_scroll (selected_window
, XINT (n
) * direction
, 0, 0);
5331 unbind_to (count
, Qnil
);
5334 DEFUN ("scroll-up", Fscroll_up
, Sscroll_up
, 0, 1, "^P",
5335 doc
: /* Scroll text of selected window upward ARG lines.
5336 If ARG is omitted or nil, scroll upward by a near full screen.
5337 A near full screen is `next-screen-context-lines' less than a full screen.
5338 Negative ARG means scroll downward.
5339 If ARG is the atom `-', scroll downward by nearly full screen.
5340 When calling from a program, supply as argument a number, nil, or `-'. */)
5344 scroll_command (arg
, 1);
5348 DEFUN ("scroll-down", Fscroll_down
, Sscroll_down
, 0, 1, "^P",
5349 doc
: /* Scroll text of selected window down ARG lines.
5350 If ARG is omitted or nil, scroll down by a near full screen.
5351 A near full screen is `next-screen-context-lines' less than a full screen.
5352 Negative ARG means scroll upward.
5353 If ARG is the atom `-', scroll upward by nearly full screen.
5354 When calling from a program, supply as argument a number, nil, or `-'. */)
5358 scroll_command (arg
, -1);
5362 DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling
, Sother_window_for_scrolling
, 0, 0, 0,
5363 doc
: /* Return the other window for \"other window scroll\" commands.
5364 If `other-window-scroll-buffer' is non-nil, a window
5365 showing that buffer is used.
5366 If in the minibuffer, `minibuffer-scroll-window' if non-nil
5367 specifies the window. This takes precedence over
5368 `other-window-scroll-buffer'. */)
5373 if (MINI_WINDOW_P (XWINDOW (selected_window
))
5374 && !NILP (Vminibuf_scroll_window
))
5375 window
= Vminibuf_scroll_window
;
5376 /* If buffer is specified, scroll that buffer. */
5377 else if (!NILP (Vother_window_scroll_buffer
))
5379 window
= Fget_buffer_window (Vother_window_scroll_buffer
, Qnil
);
5381 window
= display_buffer (Vother_window_scroll_buffer
, Qt
, Qnil
);
5385 /* Nothing specified; look for a neighboring window on the same
5387 window
= Fnext_window (selected_window
, Qnil
, Qnil
);
5389 if (EQ (window
, selected_window
))
5390 /* That didn't get us anywhere; look for a window on another
5393 window
= Fnext_window (window
, Qnil
, Qt
);
5394 while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window
))))
5395 && ! EQ (window
, selected_window
));
5398 CHECK_LIVE_WINDOW (window
);
5400 if (EQ (window
, selected_window
))
5401 error ("There is no other window");
5406 DEFUN ("scroll-other-window", Fscroll_other_window
, Sscroll_other_window
, 0, 1, "P",
5407 doc
: /* Scroll next window upward ARG lines; or near full screen if no ARG.
5408 A near full screen is `next-screen-context-lines' less than a full screen.
5409 The next window is the one below the current one; or the one at the top
5410 if the current one is at the bottom. Negative ARG means scroll downward.
5411 If ARG is the atom `-', scroll downward by nearly full screen.
5412 When calling from a program, supply as argument a number, nil, or `-'.
5414 If `other-window-scroll-buffer' is non-nil, scroll the window
5415 showing that buffer, popping the buffer up if necessary.
5416 If in the minibuffer, `minibuffer-scroll-window' if non-nil
5417 specifies the window to scroll. This takes precedence over
5418 `other-window-scroll-buffer'. */)
5424 int count
= SPECPDL_INDEX ();
5426 window
= Fother_window_for_scrolling ();
5427 w
= XWINDOW (window
);
5429 /* Don't screw up if window_scroll gets an error. */
5430 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
5431 ++windows_or_buffers_changed
;
5433 Fset_buffer (w
->buffer
);
5434 SET_PT (marker_position (w
->pointm
));
5437 window_scroll (window
, 1, 1, 1);
5438 else if (EQ (arg
, Qminus
))
5439 window_scroll (window
, -1, 1, 1);
5445 window_scroll (window
, XINT (arg
), 0, 1);
5448 set_marker_both (w
->pointm
, Qnil
, PT
, PT_BYTE
);
5449 unbind_to (count
, Qnil
);
5454 DEFUN ("scroll-left", Fscroll_left
, Sscroll_left
, 0, 2, "^P\np",
5455 doc
: /* Scroll selected window display ARG columns left.
5456 Default for ARG is window width minus 2.
5457 Value is the total amount of leftward horizontal scrolling in
5458 effect after the change.
5459 If SET-MINIMUM is non-nil, the new scroll amount becomes the
5460 lower bound for automatic scrolling, i.e. automatic scrolling
5461 will not scroll a window to a column less than the value returned
5462 by this function. This happens in an interactive call. */)
5464 register Lisp_Object arg
, set_minimum
;
5468 struct window
*w
= XWINDOW (selected_window
);
5471 XSETFASTINT (arg
, window_box_text_cols (w
) - 2);
5473 arg
= Fprefix_numeric_value (arg
);
5475 hscroll
= XINT (w
->hscroll
) + XINT (arg
);
5476 result
= Fset_window_hscroll (selected_window
, make_number (hscroll
));
5478 if (!NILP (set_minimum
))
5479 w
->min_hscroll
= w
->hscroll
;
5484 DEFUN ("scroll-right", Fscroll_right
, Sscroll_right
, 0, 2, "^P\np",
5485 doc
: /* Scroll selected window display ARG columns right.
5486 Default for ARG is window width minus 2.
5487 Value is the total amount of leftward horizontal scrolling in
5488 effect after the change.
5489 If SET-MINIMUM is non-nil, the new scroll amount becomes the
5490 lower bound for automatic scrolling, i.e. automatic scrolling
5491 will not scroll a window to a column less than the value returned
5492 by this function. This happens in an interactive call. */)
5494 register Lisp_Object arg
, set_minimum
;
5498 struct window
*w
= XWINDOW (selected_window
);
5501 XSETFASTINT (arg
, window_box_text_cols (w
) - 2);
5503 arg
= Fprefix_numeric_value (arg
);
5505 hscroll
= XINT (w
->hscroll
) - XINT (arg
);
5506 result
= Fset_window_hscroll (selected_window
, make_number (hscroll
));
5508 if (!NILP (set_minimum
))
5509 w
->min_hscroll
= w
->hscroll
;
5514 DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window
, Sminibuffer_selected_window
, 0, 0, 0,
5515 doc
: /* Return the window which was selected when entering the minibuffer.
5516 Returns nil, if selected window is not a minibuffer window. */)
5519 if (minibuf_level
> 0
5520 && MINI_WINDOW_P (XWINDOW (selected_window
))
5521 && WINDOW_LIVE_P (minibuf_selected_window
))
5522 return minibuf_selected_window
;
5527 /* Value is the number of lines actually displayed in window W,
5528 as opposed to its height. */
5531 displayed_window_lines (w
)
5535 struct text_pos start
;
5536 int height
= window_box_height (w
);
5537 struct buffer
*old_buffer
;
5540 if (XBUFFER (w
->buffer
) != current_buffer
)
5542 old_buffer
= current_buffer
;
5543 set_buffer_internal (XBUFFER (w
->buffer
));
5548 /* In case W->start is out of the accessible range, do something
5549 reasonable. This happens in Info mode when Info-scroll-down
5550 calls (recenter -1) while W->start is 1. */
5551 if (XMARKER (w
->start
)->charpos
< BEGV
)
5552 SET_TEXT_POS (start
, BEGV
, BEGV_BYTE
);
5553 else if (XMARKER (w
->start
)->charpos
> ZV
)
5554 SET_TEXT_POS (start
, ZV
, ZV_BYTE
);
5556 SET_TEXT_POS_FROM_MARKER (start
, w
->start
);
5558 start_display (&it
, w
, start
);
5559 move_it_vertically (&it
, height
);
5560 bottom_y
= line_bottom_y (&it
);
5562 /* rms: On a non-window display,
5563 the value of it.vpos at the bottom of the screen
5564 seems to be 1 larger than window_box_height (w).
5565 This kludge fixes a bug whereby (move-to-window-line -1)
5566 when ZV is on the last screen line
5567 moves to the previous screen line instead of the last one. */
5568 if (! FRAME_WINDOW_P (XFRAME (w
->frame
)))
5571 /* Add in empty lines at the bottom of the window. */
5572 if (bottom_y
< height
)
5574 int uy
= FRAME_LINE_HEIGHT (it
.f
);
5575 it
.vpos
+= (height
- bottom_y
+ uy
- 1) / uy
;
5579 set_buffer_internal (old_buffer
);
5585 DEFUN ("recenter", Frecenter
, Srecenter
, 0, 1, "P",
5586 doc
: /* Center point in selected window and redisplay frame.
5587 With prefix argument ARG, recenter putting point on screen line ARG
5588 relative to the selected window. If ARG is negative, it counts up from the
5589 bottom of the window. (ARG should be less than the height of the window.)
5591 If ARG is omitted or nil, erase the entire frame and then redraw with point
5592 in the center of the selected window. If `auto-resize-tool-bars' is set to
5593 `grow-only', this resets the tool-bar's height to the minimum height needed.
5595 Just C-u as prefix means put point in the center of the window
5596 and redisplay normally--don't erase and redraw the frame. */)
5598 register Lisp_Object arg
;
5600 struct window
*w
= XWINDOW (selected_window
);
5601 struct buffer
*buf
= XBUFFER (w
->buffer
);
5602 struct buffer
*obuf
= current_buffer
;
5604 int charpos
, bytepos
;
5606 int this_scroll_margin
;
5608 /* If redisplay is suppressed due to an error, try again. */
5609 obuf
->display_error_modiff
= 0;
5615 /* Invalidate pixel data calculated for all compositions. */
5616 for (i
= 0; i
< n_compositions
; i
++)
5617 composition_table
[i
]->font
= NULL
;
5619 WINDOW_XFRAME (w
)->minimize_tool_bar_window_p
= 1;
5621 Fredraw_frame (WINDOW_FRAME (w
));
5622 SET_FRAME_GARBAGED (WINDOW_XFRAME (w
));
5625 else if (CONSP (arg
)) /* Just C-u. */
5629 arg
= Fprefix_numeric_value (arg
);
5634 set_buffer_internal (buf
);
5636 /* Do this after making BUF current
5637 in case scroll_margin is buffer-local. */
5638 this_scroll_margin
= max (0, scroll_margin
);
5639 this_scroll_margin
= min (this_scroll_margin
,
5640 XFASTINT (w
->total_lines
) / 4);
5642 /* Handle centering on a graphical frame specially. Such frames can
5643 have variable-height lines and centering point on the basis of
5644 line counts would lead to strange effects. */
5645 if (FRAME_WINDOW_P (XFRAME (w
->frame
)))
5652 SET_TEXT_POS (pt
, PT
, PT_BYTE
);
5653 start_display (&it
, w
, pt
);
5654 move_it_vertically_backward (&it
, window_box_height (w
) / 2);
5655 charpos
= IT_CHARPOS (it
);
5656 bytepos
= IT_BYTEPOS (it
);
5663 int extra_line_spacing
;
5664 int h
= window_box_height (w
);
5666 iarg
= - max (-iarg
, this_scroll_margin
);
5668 SET_TEXT_POS (pt
, PT
, PT_BYTE
);
5669 start_display (&it
, w
, pt
);
5671 /* Be sure we have the exact height of the full line containing PT. */
5672 move_it_by_lines (&it
, 0, 1);
5674 /* The amount of pixels we have to move back is the window
5675 height minus what's displayed in the line containing PT,
5676 and the lines below. */
5679 move_it_by_lines (&it
, nlines
, 1);
5681 if (it
.vpos
== nlines
)
5685 /* Last line has no newline */
5686 h
-= line_bottom_y (&it
);
5690 /* Don't reserve space for extra line spacing of last line. */
5691 extra_line_spacing
= it
.max_extra_line_spacing
;
5693 /* If we can't move down NLINES lines because we hit
5694 the end of the buffer, count in some empty lines. */
5695 if (it
.vpos
< nlines
)
5698 extra_line_spacing
= it
.extra_line_spacing
;
5699 h
-= nlines
* (FRAME_LINE_HEIGHT (it
.f
) + extra_line_spacing
);
5704 /* Now find the new top line (starting position) of the window. */
5705 start_display (&it
, w
, pt
);
5707 move_it_vertically_backward (&it
, h
);
5709 /* If extra line spacing is present, we may move too far
5710 back. This causes the last line to be only partially
5711 visible (which triggers redisplay to recenter that line
5712 in the middle), so move forward.
5713 But ignore extra line spacing on last line, as it is not
5714 considered to be part of the visible height of the line.
5716 h
+= extra_line_spacing
;
5717 while (-it
.current_y
> h
)
5718 move_it_by_lines (&it
, 1, 1);
5720 charpos
= IT_CHARPOS (it
);
5721 bytepos
= IT_BYTEPOS (it
);
5725 struct position pos
;
5727 iarg
= max (iarg
, this_scroll_margin
);
5729 pos
= *vmotion (PT
, -iarg
, w
);
5730 charpos
= pos
.bufpos
;
5731 bytepos
= pos
.bytepos
;
5736 struct position pos
;
5737 int ht
= window_internal_height (w
);
5744 /* Don't let it get into the margin at either top or bottom. */
5745 iarg
= max (iarg
, this_scroll_margin
);
5746 iarg
= min (iarg
, ht
- this_scroll_margin
- 1);
5748 pos
= *vmotion (PT
, - iarg
, w
);
5749 charpos
= pos
.bufpos
;
5750 bytepos
= pos
.bytepos
;
5753 /* Set the new window start. */
5754 set_marker_both (w
->start
, w
->buffer
, charpos
, bytepos
);
5755 w
->window_end_valid
= Qnil
;
5757 w
->optional_new_start
= Qt
;
5759 if (bytepos
== BEGV_BYTE
|| FETCH_BYTE (bytepos
- 1) == '\n')
5760 w
->start_at_line_beg
= Qt
;
5762 w
->start_at_line_beg
= Qnil
;
5764 set_buffer_internal (obuf
);
5769 DEFUN ("window-text-height", Fwindow_text_height
, Swindow_text_height
,
5771 doc
: /* Return the height in lines of the text display area of WINDOW.
5772 WINDOW defaults to the selected window.
5774 The return value does neither include the mode line or header line, if
5775 any, nor any partial-height lines in the text display area. */)
5779 struct window
*w
= decode_window (window
);
5780 int pixel_height
= window_box_height (w
);
5781 int line_height
= pixel_height
/ FRAME_LINE_HEIGHT (XFRAME (w
->frame
));
5782 return make_number (line_height
);
5787 DEFUN ("move-to-window-line", Fmove_to_window_line
, Smove_to_window_line
,
5789 doc
: /* Position point relative to window.
5790 With no argument, position point at center of window.
5791 An argument specifies vertical position within the window;
5792 zero means top of window, negative means relative to bottom of window. */)
5796 struct window
*w
= XWINDOW (selected_window
);
5800 int this_scroll_margin
;
5803 window
= selected_window
;
5804 start
= marker_position (w
->start
);
5805 if (start
< BEGV
|| start
> ZV
)
5807 int height
= window_internal_height (w
);
5808 Fvertical_motion (make_number (- (height
/ 2)), window
);
5809 set_marker_both (w
->start
, w
->buffer
, PT
, PT_BYTE
);
5810 w
->start_at_line_beg
= Fbolp ();
5811 w
->force_start
= Qt
;
5814 Fgoto_char (w
->start
);
5816 lines
= displayed_window_lines (w
);
5819 this_scroll_margin
= max (0, scroll_margin
);
5820 this_scroll_margin
= min (this_scroll_margin
, lines
/ 4);
5824 XSETFASTINT (arg
, lines
/ 2);
5827 int iarg
= XINT (Fprefix_numeric_value (arg
));
5830 iarg
= iarg
+ lines
;
5832 #if 0 /* This code would prevent move-to-window-line from moving point
5833 to a place inside the scroll margins (which would cause the
5834 next redisplay to scroll). I wrote this code, but then concluded
5835 it is probably better not to install it. However, it is here
5836 inside #if 0 so as not to lose it. -- rms. */
5838 /* Don't let it get into the margin at either top or bottom. */
5839 iarg
= max (iarg
, this_scroll_margin
);
5840 iarg
= min (iarg
, lines
- this_scroll_margin
- 1);
5843 arg
= make_number (iarg
);
5846 /* Skip past a partially visible first line. */
5848 XSETINT (arg
, XINT (arg
) + 1);
5850 return Fvertical_motion (arg
, window
);
5855 /***********************************************************************
5856 Window Configuration
5857 ***********************************************************************/
5859 struct save_window_data
5862 struct Lisp_Vector
*next_from_Lisp_Vector_struct
;
5863 Lisp_Object selected_frame
;
5864 Lisp_Object current_window
;
5865 Lisp_Object current_buffer
;
5866 Lisp_Object minibuf_scroll_window
;
5867 Lisp_Object minibuf_selected_window
;
5868 Lisp_Object root_window
;
5869 Lisp_Object focus_frame
;
5870 /* A vector, each of whose elements is a struct saved_window
5872 Lisp_Object saved_windows
;
5874 /* All fields above are traced by the GC.
5875 From `fame-cols' down, the fields are ignored by the GC. */
5877 int frame_cols
, frame_lines
, frame_menu_bar_lines
;
5878 int frame_tool_bar_lines
;
5881 /* This is saved as a Lisp_Vector */
5884 /* these first two must agree with struct Lisp_Vector in lisp.h */
5886 struct Lisp_Vector
*next_from_Lisp_Vector_struct
;
5889 Lisp_Object buffer
, start
, pointm
, mark
;
5890 Lisp_Object left_col
, top_line
, total_cols
, total_lines
;
5891 Lisp_Object hscroll
, min_hscroll
;
5892 Lisp_Object parent
, prev
;
5893 Lisp_Object start_at_line_beg
;
5894 Lisp_Object display_table
;
5895 Lisp_Object orig_top_line
, orig_total_lines
;
5896 Lisp_Object left_margin_cols
, right_margin_cols
;
5897 Lisp_Object left_fringe_width
, right_fringe_width
, fringes_outside_margins
;
5898 Lisp_Object scroll_bar_width
, vertical_scroll_bar_type
;
5899 Lisp_Object dedicated
, resize_proportionally
;
5902 #define SAVED_WINDOW_N(swv,n) \
5903 ((struct saved_window *) (XVECTOR ((swv)->contents[(n)])))
5905 DEFUN ("window-configuration-p", Fwindow_configuration_p
, Swindow_configuration_p
, 1, 1, 0,
5906 doc
: /* Return t if OBJECT is a window-configuration object. */)
5910 return WINDOW_CONFIGURATIONP (object
) ? Qt
: Qnil
;
5913 DEFUN ("window-configuration-frame", Fwindow_configuration_frame
, Swindow_configuration_frame
, 1, 1, 0,
5914 doc
: /* Return the frame that CONFIG, a window-configuration object, is about. */)
5918 register struct save_window_data
*data
;
5919 struct Lisp_Vector
*saved_windows
;
5921 CHECK_WINDOW_CONFIGURATION (config
);
5923 data
= (struct save_window_data
*) XVECTOR (config
);
5924 saved_windows
= XVECTOR (data
->saved_windows
);
5925 return XWINDOW (SAVED_WINDOW_N (saved_windows
, 0)->window
)->frame
;
5928 DEFUN ("set-window-configuration", Fset_window_configuration
,
5929 Sset_window_configuration
, 1, 1, 0,
5930 doc
: /* Set the configuration of windows and buffers as specified by CONFIGURATION.
5931 CONFIGURATION must be a value previously returned
5932 by `current-window-configuration' (which see).
5933 If CONFIGURATION was made from a frame that is now deleted,
5934 only frame-independent values can be restored. In this case,
5935 the return value is nil. Otherwise the value is t. */)
5937 Lisp_Object configuration
;
5939 register struct save_window_data
*data
;
5940 struct Lisp_Vector
*saved_windows
;
5941 Lisp_Object new_current_buffer
;
5946 CHECK_WINDOW_CONFIGURATION (configuration
);
5948 data
= (struct save_window_data
*) XVECTOR (configuration
);
5949 saved_windows
= XVECTOR (data
->saved_windows
);
5951 new_current_buffer
= data
->current_buffer
;
5952 if (NILP (XBUFFER (new_current_buffer
)->name
))
5953 new_current_buffer
= Qnil
;
5956 if (XBUFFER (new_current_buffer
) == current_buffer
)
5957 /* The code further down "preserves point" by saving here PT in
5958 old_point and then setting it later back into PT. When the
5959 current-selected-window and the final-selected-window both show
5960 the current buffer, this suffers from the problem that the
5961 current PT is the window-point of the current-selected-window,
5962 while the final PT is the point of the final-selected-window, so
5963 this copy from one PT to the other would end up moving the
5964 window-point of the final-selected-window to the window-point of
5965 the current-selected-window. So we have to be careful which
5966 point of the current-buffer we copy into old_point. */
5967 if (EQ (XWINDOW (data
->current_window
)->buffer
, new_current_buffer
)
5968 && WINDOWP (selected_window
)
5969 && EQ (XWINDOW (selected_window
)->buffer
, new_current_buffer
)
5970 && !EQ (selected_window
, data
->current_window
))
5971 old_point
= XMARKER (XWINDOW (data
->current_window
)->pointm
)->charpos
;
5975 /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of
5976 point in new_current_buffer as of the last time this buffer was
5977 used. This can be non-deterministic since it can be changed by
5978 things like jit-lock by mere temporary selection of some random
5979 window that happens to show this buffer.
5980 So if possible we want this arbitrary choice of "which point" to
5981 be the one from the to-be-selected-window so as to prevent this
5982 window's cursor from being copied from another window. */
5983 if (EQ (XWINDOW (data
->current_window
)->buffer
, new_current_buffer
)
5984 /* If current_window = selected_window, its point is in BUF_PT. */
5985 && !EQ (selected_window
, data
->current_window
))
5986 old_point
= XMARKER (XWINDOW (data
->current_window
)->pointm
)->charpos
;
5988 old_point
= BUF_PT (XBUFFER (new_current_buffer
));
5991 frame
= XWINDOW (SAVED_WINDOW_N (saved_windows
, 0)->window
)->frame
;
5994 /* If f is a dead frame, don't bother rebuilding its window tree.
5995 However, there is other stuff we should still try to do below. */
5996 if (FRAME_LIVE_P (f
))
5998 register struct window
*w
;
5999 register struct saved_window
*p
;
6000 struct window
*root_window
;
6001 struct window
**leaf_windows
;
6005 /* If the frame has been resized since this window configuration was
6006 made, we change the frame to the size specified in the
6007 configuration, restore the configuration, and then resize it
6008 back. We keep track of the prevailing height in these variables. */
6009 int previous_frame_lines
= FRAME_LINES (f
);
6010 int previous_frame_cols
= FRAME_COLS (f
);
6011 int previous_frame_menu_bar_lines
= FRAME_MENU_BAR_LINES (f
);
6012 int previous_frame_tool_bar_lines
= FRAME_TOOL_BAR_LINES (f
);
6014 /* The mouse highlighting code could get screwed up
6015 if it runs during this. */
6018 if (data
->frame_lines
!= previous_frame_lines
6019 || data
->frame_cols
!= previous_frame_cols
)
6020 change_frame_size (f
, data
->frame_lines
,
6021 data
->frame_cols
, 0, 0, 0);
6022 #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS)
6023 if (data
->frame_menu_bar_lines
6024 != previous_frame_menu_bar_lines
)
6025 x_set_menu_bar_lines (f
, make_number (data
->frame_menu_bar_lines
),
6027 #ifdef HAVE_WINDOW_SYSTEM
6028 if (data
->frame_tool_bar_lines
6029 != previous_frame_tool_bar_lines
)
6030 x_set_tool_bar_lines (f
, make_number (data
->frame_tool_bar_lines
),
6035 /* "Swap out" point from the selected window's buffer
6036 into the window itself. (Normally the pointm of the selected
6037 window holds garbage.) We do this now, before
6038 restoring the window contents, and prevent it from
6039 being done later on when we select a new window. */
6040 if (! NILP (XWINDOW (selected_window
)->buffer
))
6042 w
= XWINDOW (selected_window
);
6043 set_marker_both (w
->pointm
,
6045 BUF_PT (XBUFFER (w
->buffer
)),
6046 BUF_PT_BYTE (XBUFFER (w
->buffer
)));
6049 windows_or_buffers_changed
++;
6050 FRAME_WINDOW_SIZES_CHANGED (f
) = 1;
6052 /* Problem: Freeing all matrices and later allocating them again
6053 is a serious redisplay flickering problem. What we would
6054 really like to do is to free only those matrices not reused
6056 root_window
= XWINDOW (FRAME_ROOT_WINDOW (f
));
6058 = (struct window
**) alloca (count_windows (root_window
)
6059 * sizeof (struct window
*));
6060 n_leaf_windows
= get_leaf_windows (root_window
, leaf_windows
, 0);
6063 Mark all windows now on frame as "deleted".
6064 Restoring the new configuration "undeletes" any that are in it.
6066 Save their current buffers in their height fields, since we may
6067 need it later, if a buffer saved in the configuration is now
6069 delete_all_subwindows (XWINDOW (FRAME_ROOT_WINDOW (f
)));
6071 for (k
= 0; k
< saved_windows
->size
; k
++)
6073 p
= SAVED_WINDOW_N (saved_windows
, k
);
6074 w
= XWINDOW (p
->window
);
6077 if (!NILP (p
->parent
))
6078 w
->parent
= SAVED_WINDOW_N (saved_windows
,
6079 XFASTINT (p
->parent
))->window
;
6083 if (!NILP (p
->prev
))
6085 w
->prev
= SAVED_WINDOW_N (saved_windows
,
6086 XFASTINT (p
->prev
))->window
;
6087 XWINDOW (w
->prev
)->next
= p
->window
;
6092 if (!NILP (w
->parent
))
6094 if (EQ (p
->total_cols
, XWINDOW (w
->parent
)->total_cols
))
6096 XWINDOW (w
->parent
)->vchild
= p
->window
;
6097 XWINDOW (w
->parent
)->hchild
= Qnil
;
6101 XWINDOW (w
->parent
)->hchild
= p
->window
;
6102 XWINDOW (w
->parent
)->vchild
= Qnil
;
6107 /* If we squirreled away the buffer in the window's height,
6109 if (BUFFERP (w
->total_lines
))
6110 w
->buffer
= w
->total_lines
;
6111 w
->left_col
= p
->left_col
;
6112 w
->top_line
= p
->top_line
;
6113 w
->total_cols
= p
->total_cols
;
6114 w
->total_lines
= p
->total_lines
;
6115 w
->hscroll
= p
->hscroll
;
6116 w
->min_hscroll
= p
->min_hscroll
;
6117 w
->display_table
= p
->display_table
;
6118 w
->orig_top_line
= p
->orig_top_line
;
6119 w
->orig_total_lines
= p
->orig_total_lines
;
6120 w
->left_margin_cols
= p
->left_margin_cols
;
6121 w
->right_margin_cols
= p
->right_margin_cols
;
6122 w
->left_fringe_width
= p
->left_fringe_width
;
6123 w
->right_fringe_width
= p
->right_fringe_width
;
6124 w
->fringes_outside_margins
= p
->fringes_outside_margins
;
6125 w
->scroll_bar_width
= p
->scroll_bar_width
;
6126 w
->vertical_scroll_bar_type
= p
->vertical_scroll_bar_type
;
6127 w
->dedicated
= p
->dedicated
;
6128 w
->resize_proportionally
= p
->resize_proportionally
;
6129 XSETFASTINT (w
->last_modified
, 0);
6130 XSETFASTINT (w
->last_overlay_modified
, 0);
6132 /* Reinstall the saved buffer and pointers into it. */
6133 if (NILP (p
->buffer
))
6134 w
->buffer
= p
->buffer
;
6137 if (!NILP (XBUFFER (p
->buffer
)->name
))
6138 /* If saved buffer is alive, install it. */
6140 w
->buffer
= p
->buffer
;
6141 w
->start_at_line_beg
= p
->start_at_line_beg
;
6142 set_marker_restricted (w
->start
, p
->start
, w
->buffer
);
6143 set_marker_restricted (w
->pointm
, p
->pointm
, w
->buffer
);
6144 Fset_marker (XBUFFER (w
->buffer
)->mark
,
6145 p
->mark
, w
->buffer
);
6147 /* As documented in Fcurrent_window_configuration, don't
6148 restore the location of point in the buffer which was
6149 current when the window configuration was recorded. */
6150 if (!EQ (p
->buffer
, new_current_buffer
)
6151 && XBUFFER (p
->buffer
) == current_buffer
)
6152 Fgoto_char (w
->pointm
);
6154 else if (NILP (w
->buffer
) || NILP (XBUFFER (w
->buffer
)->name
))
6155 /* Else unless window has a live buffer, get one. */
6157 w
->buffer
= Fcdr (Fcar (Vbuffer_alist
));
6158 /* This will set the markers to beginning of visible
6160 set_marker_restricted (w
->start
, make_number (0), w
->buffer
);
6161 set_marker_restricted (w
->pointm
, make_number (0),w
->buffer
);
6162 w
->start_at_line_beg
= Qt
;
6165 /* Keeping window's old buffer; make sure the markers
6168 /* Set window markers at start of visible range. */
6169 if (XMARKER (w
->start
)->buffer
== 0)
6170 set_marker_restricted (w
->start
, make_number (0),
6172 if (XMARKER (w
->pointm
)->buffer
== 0)
6173 set_marker_restricted_both (w
->pointm
, w
->buffer
,
6174 BUF_PT (XBUFFER (w
->buffer
)),
6175 BUF_PT_BYTE (XBUFFER (w
->buffer
)));
6176 w
->start_at_line_beg
= Qt
;
6181 FRAME_ROOT_WINDOW (f
) = data
->root_window
;
6182 /* Prevent "swapping out point" in the old selected window
6183 using the buffer that has been restored into it.
6184 We already swapped out point that from that window's old buffer. */
6185 selected_window
= Qnil
;
6187 /* Arrange *not* to restore point in the buffer that was
6188 current when the window configuration was saved. */
6189 if (EQ (XWINDOW (data
->current_window
)->buffer
, new_current_buffer
))
6190 set_marker_restricted (XWINDOW (data
->current_window
)->pointm
,
6191 make_number (old_point
),
6192 XWINDOW (data
->current_window
)->buffer
);
6194 Fselect_window (data
->current_window
, Qnil
);
6195 XBUFFER (XWINDOW (selected_window
)->buffer
)->last_selected_window
6198 if (NILP (data
->focus_frame
)
6199 || (FRAMEP (data
->focus_frame
)
6200 && FRAME_LIVE_P (XFRAME (data
->focus_frame
))))
6201 Fredirect_frame_focus (frame
, data
->focus_frame
);
6203 #if 0 /* I don't understand why this is needed, and it causes problems
6204 when the frame's old selected window has been deleted. */
6205 if (f
!= selected_frame
&& FRAME_WINDOW_P (f
))
6206 do_switch_frame (WINDOW_FRAME (XWINDOW (data
->root_window
)),
6210 /* Set the screen height to the value it had before this function. */
6211 if (previous_frame_lines
!= FRAME_LINES (f
)
6212 || previous_frame_cols
!= FRAME_COLS (f
))
6213 change_frame_size (f
, previous_frame_lines
, previous_frame_cols
,
6215 #if defined (HAVE_WINDOW_SYSTEM) || defined (MSDOS)
6216 if (previous_frame_menu_bar_lines
!= FRAME_MENU_BAR_LINES (f
))
6217 x_set_menu_bar_lines (f
, make_number (previous_frame_menu_bar_lines
),
6219 #ifdef HAVE_WINDOW_SYSTEM
6220 if (previous_frame_tool_bar_lines
!= FRAME_TOOL_BAR_LINES (f
))
6221 x_set_tool_bar_lines (f
, make_number (previous_frame_tool_bar_lines
),
6226 /* Now, free glyph matrices in windows that were not reused. */
6227 for (i
= n
= 0; i
< n_leaf_windows
; ++i
)
6229 if (NILP (leaf_windows
[i
]->buffer
))
6231 /* Assert it's not reused as a combination. */
6232 xassert (NILP (leaf_windows
[i
]->hchild
)
6233 && NILP (leaf_windows
[i
]->vchild
));
6234 free_window_matrices (leaf_windows
[i
]);
6236 else if (EQ (leaf_windows
[i
]->buffer
, new_current_buffer
))
6244 /* Fselect_window will have made f the selected frame, so we
6245 reselect the proper frame here. Fhandle_switch_frame will change the
6246 selected window too, but that doesn't make the call to
6247 Fselect_window above totally superfluous; it still sets f's
6249 if (FRAME_LIVE_P (XFRAME (data
->selected_frame
)))
6250 do_switch_frame (data
->selected_frame
, 0, 0);
6252 run_window_configuration_change_hook (f
);
6255 if (!NILP (new_current_buffer
))
6256 Fset_buffer (new_current_buffer
);
6258 Vminibuf_scroll_window
= data
->minibuf_scroll_window
;
6259 minibuf_selected_window
= data
->minibuf_selected_window
;
6261 return (FRAME_LIVE_P (f
) ? Qt
: Qnil
);
6264 /* Mark all windows now on frame as deleted
6265 by setting their buffers to nil. */
6268 delete_all_subwindows (w
)
6269 register struct window
*w
;
6271 if (!NILP (w
->next
))
6272 delete_all_subwindows (XWINDOW (w
->next
));
6273 if (!NILP (w
->vchild
))
6274 delete_all_subwindows (XWINDOW (w
->vchild
));
6275 if (!NILP (w
->hchild
))
6276 delete_all_subwindows (XWINDOW (w
->hchild
));
6278 w
->total_lines
= w
->buffer
; /* See Fset_window_configuration for excuse. */
6280 if (!NILP (w
->buffer
))
6283 /* We set all three of these fields to nil, to make sure that we can
6284 distinguish this dead window from any live window. Live leaf
6285 windows will have buffer set, and combination windows will have
6286 vchild or hchild set. */
6291 Vwindow_list
= Qnil
;
6295 count_windows (window
)
6296 register struct window
*window
;
6298 register int count
= 1;
6299 if (!NILP (window
->next
))
6300 count
+= count_windows (XWINDOW (window
->next
));
6301 if (!NILP (window
->vchild
))
6302 count
+= count_windows (XWINDOW (window
->vchild
));
6303 if (!NILP (window
->hchild
))
6304 count
+= count_windows (XWINDOW (window
->hchild
));
6309 /* Fill vector FLAT with leaf windows under W, starting at index I.
6310 Value is last index + 1. */
6313 get_leaf_windows (w
, flat
, i
)
6315 struct window
**flat
;
6320 if (!NILP (w
->hchild
))
6321 i
= get_leaf_windows (XWINDOW (w
->hchild
), flat
, i
);
6322 else if (!NILP (w
->vchild
))
6323 i
= get_leaf_windows (XWINDOW (w
->vchild
), flat
, i
);
6327 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
6334 /* Return a pointer to the glyph W's physical cursor is on. Value is
6335 null if W's current matrix is invalid, so that no meaningfull glyph
6339 get_phys_cursor_glyph (w
)
6342 struct glyph_row
*row
;
6343 struct glyph
*glyph
;
6345 if (w
->phys_cursor
.vpos
>= 0
6346 && w
->phys_cursor
.vpos
< w
->current_matrix
->nrows
6347 && (row
= MATRIX_ROW (w
->current_matrix
, w
->phys_cursor
.vpos
),
6349 && row
->used
[TEXT_AREA
] > w
->phys_cursor
.hpos
)
6350 glyph
= row
->glyphs
[TEXT_AREA
] + w
->phys_cursor
.hpos
;
6359 save_window_save (window
, vector
, i
)
6361 struct Lisp_Vector
*vector
;
6364 register struct saved_window
*p
;
6365 register struct window
*w
;
6366 register Lisp_Object tem
;
6368 for (;!NILP (window
); window
= w
->next
)
6370 p
= SAVED_WINDOW_N (vector
, i
);
6371 w
= XWINDOW (window
);
6373 XSETFASTINT (w
->temslot
, i
); i
++;
6375 p
->buffer
= w
->buffer
;
6376 p
->left_col
= w
->left_col
;
6377 p
->top_line
= w
->top_line
;
6378 p
->total_cols
= w
->total_cols
;
6379 p
->total_lines
= w
->total_lines
;
6380 p
->hscroll
= w
->hscroll
;
6381 p
->min_hscroll
= w
->min_hscroll
;
6382 p
->display_table
= w
->display_table
;
6383 p
->orig_top_line
= w
->orig_top_line
;
6384 p
->orig_total_lines
= w
->orig_total_lines
;
6385 p
->left_margin_cols
= w
->left_margin_cols
;
6386 p
->right_margin_cols
= w
->right_margin_cols
;
6387 p
->left_fringe_width
= w
->left_fringe_width
;
6388 p
->right_fringe_width
= w
->right_fringe_width
;
6389 p
->fringes_outside_margins
= w
->fringes_outside_margins
;
6390 p
->scroll_bar_width
= w
->scroll_bar_width
;
6391 p
->vertical_scroll_bar_type
= w
->vertical_scroll_bar_type
;
6392 p
->dedicated
= w
->dedicated
;
6393 p
->resize_proportionally
= w
->resize_proportionally
;
6394 if (!NILP (w
->buffer
))
6396 /* Save w's value of point in the window configuration.
6397 If w is the selected window, then get the value of point
6398 from the buffer; pointm is garbage in the selected window. */
6399 if (EQ (window
, selected_window
))
6401 p
->pointm
= Fmake_marker ();
6402 set_marker_both (p
->pointm
, w
->buffer
,
6403 BUF_PT (XBUFFER (w
->buffer
)),
6404 BUF_PT_BYTE (XBUFFER (w
->buffer
)));
6407 p
->pointm
= Fcopy_marker (w
->pointm
, Qnil
);
6409 p
->start
= Fcopy_marker (w
->start
, Qnil
);
6410 p
->start_at_line_beg
= w
->start_at_line_beg
;
6412 tem
= XBUFFER (w
->buffer
)->mark
;
6413 p
->mark
= Fcopy_marker (tem
, Qnil
);
6420 p
->start_at_line_beg
= Qnil
;
6423 if (NILP (w
->parent
))
6426 p
->parent
= XWINDOW (w
->parent
)->temslot
;
6431 p
->prev
= XWINDOW (w
->prev
)->temslot
;
6433 if (!NILP (w
->vchild
))
6434 i
= save_window_save (w
->vchild
, vector
, i
);
6435 if (!NILP (w
->hchild
))
6436 i
= save_window_save (w
->hchild
, vector
, i
);
6442 DEFUN ("current-window-configuration", Fcurrent_window_configuration
,
6443 Scurrent_window_configuration
, 0, 1, 0,
6444 doc
: /* Return an object representing the current window configuration of FRAME.
6445 If FRAME is nil or omitted, use the selected frame.
6446 This describes the number of windows, their sizes and current buffers,
6447 and for each displayed buffer, where display starts, and the positions of
6448 point and mark. An exception is made for point in the current buffer:
6449 its value is -not- saved.
6450 This also records the currently selected frame, and FRAME's focus
6451 redirection (see `redirect-frame-focus'). */)
6455 register Lisp_Object tem
;
6456 register int n_windows
;
6457 register struct save_window_data
*data
;
6462 frame
= selected_frame
;
6463 CHECK_LIVE_FRAME (frame
);
6466 n_windows
= count_windows (XWINDOW (FRAME_ROOT_WINDOW (f
)));
6467 data
= ALLOCATE_PSEUDOVECTOR (struct save_window_data
, frame_cols
,
6468 PVEC_WINDOW_CONFIGURATION
);
6470 data
->frame_cols
= FRAME_COLS (f
);
6471 data
->frame_lines
= FRAME_LINES (f
);
6472 data
->frame_menu_bar_lines
= FRAME_MENU_BAR_LINES (f
);
6473 data
->frame_tool_bar_lines
= FRAME_TOOL_BAR_LINES (f
);
6474 data
->selected_frame
= selected_frame
;
6475 data
->current_window
= FRAME_SELECTED_WINDOW (f
);
6476 XSETBUFFER (data
->current_buffer
, current_buffer
);
6477 data
->minibuf_scroll_window
= minibuf_level
> 0 ? Vminibuf_scroll_window
: Qnil
;
6478 data
->minibuf_selected_window
= minibuf_level
> 0 ? minibuf_selected_window
: Qnil
;
6479 data
->root_window
= FRAME_ROOT_WINDOW (f
);
6480 data
->focus_frame
= FRAME_FOCUS_FRAME (f
);
6481 tem
= Fmake_vector (make_number (n_windows
), Qnil
);
6482 data
->saved_windows
= tem
;
6483 for (i
= 0; i
< n_windows
; i
++)
6484 XVECTOR (tem
)->contents
[i
]
6485 = Fmake_vector (make_number (VECSIZE (struct saved_window
)), Qnil
);
6486 save_window_save (FRAME_ROOT_WINDOW (f
), XVECTOR (tem
), 0);
6487 XSETWINDOW_CONFIGURATION (tem
, data
);
6491 DEFUN ("save-window-excursion", Fsave_window_excursion
, Ssave_window_excursion
,
6493 doc
: /* Execute BODY, preserving window sizes and contents.
6494 Return the value of the last form in BODY.
6495 Restore which buffer appears in which window, where display starts,
6496 and the value of point and mark for each window.
6497 Also restore the choice of selected window.
6498 Also restore which buffer is current.
6499 Does not restore the value of point in current buffer.
6500 usage: (save-window-excursion BODY...) */)
6504 register Lisp_Object val
;
6505 register int count
= SPECPDL_INDEX ();
6507 record_unwind_protect (Fset_window_configuration
,
6508 Fcurrent_window_configuration (Qnil
));
6509 val
= Fprogn (args
);
6510 return unbind_to (count
, val
);
6515 /***********************************************************************
6517 ***********************************************************************/
6523 Lisp_Object tail
= Qnil
;
6524 Lisp_Object result
= Qnil
;
6531 if (!NILP (w
->hchild
))
6532 wn
= Fcons (Qnil
, Fcons (Fwindow_edges (wn
),
6533 window_tree (XWINDOW (w
->hchild
))));
6534 else if (!NILP (w
->vchild
))
6535 wn
= Fcons (Qt
, Fcons (Fwindow_edges (wn
),
6536 window_tree (XWINDOW (w
->vchild
))));
6540 result
= tail
= Fcons (wn
, Qnil
);
6544 XSETCDR (tail
, Fcons (wn
, Qnil
));
6548 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
6556 DEFUN ("window-tree", Fwindow_tree
, Swindow_tree
,
6558 doc
: /* Return the window tree for frame FRAME.
6560 The return value is a list of the form (ROOT MINI), where ROOT
6561 represents the window tree of the frame's root window, and MINI
6562 is the frame's minibuffer window.
6564 If the root window is not split, ROOT is the root window itself.
6565 Otherwise, ROOT is a list (DIR EDGES W1 W2 ...) where DIR is nil for a
6566 horizontal split, and t for a vertical split, EDGES gives the combined
6567 size and position of the subwindows in the split, and the rest of the
6568 elements are the subwindows in the split. Each of the subwindows may
6569 again be a window or a list representing a window split, and so on.
6570 EDGES is a list \(LEFT TOP RIGHT BOTTOM) as returned by `window-edges'.
6572 If FRAME is nil or omitted, return information on the currently
6580 frame
= selected_frame
;
6582 CHECK_FRAME (frame
);
6585 if (!FRAME_LIVE_P (f
))
6588 return window_tree (XWINDOW (FRAME_ROOT_WINDOW (f
)));
6592 /***********************************************************************
6594 ***********************************************************************/
6596 DEFUN ("set-window-margins", Fset_window_margins
, Sset_window_margins
,
6598 doc
: /* Set width of marginal areas of window WINDOW.
6599 If WINDOW is nil, set margins of the currently selected window.
6600 Second arg LEFT-WIDTH specifies the number of character cells to
6601 reserve for the left marginal area. Optional third arg RIGHT-WIDTH
6602 does the same for the right marginal area. A nil width parameter
6603 means no margin. */)
6604 (window
, left_width
, right_width
)
6605 Lisp_Object window
, left_width
, right_width
;
6607 struct window
*w
= decode_window (window
);
6609 /* Translate negative or zero widths to nil.
6610 Margins that are too wide have to be checked elsewhere. */
6612 if (!NILP (left_width
))
6614 CHECK_NUMBER (left_width
);
6615 if (XINT (left_width
) <= 0)
6619 if (!NILP (right_width
))
6621 CHECK_NUMBER (right_width
);
6622 if (XINT (right_width
) <= 0)
6626 if (!EQ (w
->left_margin_cols
, left_width
)
6627 || !EQ (w
->right_margin_cols
, right_width
))
6629 w
->left_margin_cols
= left_width
;
6630 w
->right_margin_cols
= right_width
;
6632 adjust_window_margins (w
);
6634 ++windows_or_buffers_changed
;
6635 adjust_glyphs (XFRAME (WINDOW_FRAME (w
)));
6642 DEFUN ("window-margins", Fwindow_margins
, Swindow_margins
,
6644 doc
: /* Get width of marginal areas of window WINDOW.
6645 If WINDOW is omitted or nil, use the currently selected window.
6646 Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH).
6647 If a marginal area does not exist, its width will be returned
6652 struct window
*w
= decode_window (window
);
6653 return Fcons (w
->left_margin_cols
, w
->right_margin_cols
);
6658 /***********************************************************************
6660 ***********************************************************************/
6662 DEFUN ("set-window-fringes", Fset_window_fringes
, Sset_window_fringes
,
6664 doc
: /* Set the fringe widths of window WINDOW.
6665 If WINDOW is nil, set the fringe widths of the currently selected
6667 Second arg LEFT-WIDTH specifies the number of pixels to reserve for
6668 the left fringe. Optional third arg RIGHT-WIDTH specifies the right
6669 fringe width. If a fringe width arg is nil, that means to use the
6670 frame's default fringe width. Default fringe widths can be set with
6671 the command `set-fringe-style'.
6672 If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes
6673 outside of the display margins. By default, fringes are drawn between
6674 display marginal areas and the text area. */)
6675 (window
, left_width
, right_width
, outside_margins
)
6676 Lisp_Object window
, left_width
, right_width
, outside_margins
;
6678 struct window
*w
= decode_window (window
);
6680 if (!NILP (left_width
))
6681 CHECK_NATNUM (left_width
);
6682 if (!NILP (right_width
))
6683 CHECK_NATNUM (right_width
);
6685 /* Do nothing on a tty. */
6686 if (FRAME_WINDOW_P (WINDOW_XFRAME (w
))
6687 && (!EQ (w
->left_fringe_width
, left_width
)
6688 || !EQ (w
->right_fringe_width
, right_width
)
6689 || !EQ (w
->fringes_outside_margins
, outside_margins
)))
6691 w
->left_fringe_width
= left_width
;
6692 w
->right_fringe_width
= right_width
;
6693 w
->fringes_outside_margins
= outside_margins
;
6695 adjust_window_margins (w
);
6697 clear_glyph_matrix (w
->current_matrix
);
6698 w
->window_end_valid
= Qnil
;
6700 ++windows_or_buffers_changed
;
6701 adjust_glyphs (XFRAME (WINDOW_FRAME (w
)));
6708 DEFUN ("window-fringes", Fwindow_fringes
, Swindow_fringes
,
6710 doc
: /* Get width of fringes of window WINDOW.
6711 If WINDOW is omitted or nil, use the currently selected window.
6712 Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS). */)
6716 struct window
*w
= decode_window (window
);
6718 return Fcons (make_number (WINDOW_LEFT_FRINGE_WIDTH (w
)),
6719 Fcons (make_number (WINDOW_RIGHT_FRINGE_WIDTH (w
)),
6720 Fcons ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w
)
6721 ? Qt
: Qnil
), Qnil
)));
6726 /***********************************************************************
6728 ***********************************************************************/
6730 DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars
, Sset_window_scroll_bars
,
6732 doc
: /* Set width and type of scroll bars of window WINDOW.
6733 If window is nil, set scroll bars of the currently selected window.
6734 Second parameter WIDTH specifies the pixel width for the scroll bar;
6735 this is automatically adjusted to a multiple of the frame column width.
6736 Third parameter VERTICAL-TYPE specifies the type of the vertical scroll
6737 bar: left, right, or nil.
6738 If WIDTH is nil, use the frame's scroll-bar width.
6739 If VERTICAL-TYPE is t, use the frame's scroll-bar type.
6740 Fourth parameter HORIZONTAL-TYPE is currently unused. */)
6741 (window
, width
, vertical_type
, horizontal_type
)
6742 Lisp_Object window
, width
, vertical_type
, horizontal_type
;
6744 struct window
*w
= decode_window (window
);
6748 CHECK_NATNUM (width
);
6750 if (XINT (width
) == 0)
6751 vertical_type
= Qnil
;
6754 if (!(NILP (vertical_type
)
6755 || EQ (vertical_type
, Qleft
)
6756 || EQ (vertical_type
, Qright
)
6757 || EQ (vertical_type
, Qt
)))
6758 error ("Invalid type of vertical scroll bar");
6760 if (!EQ (w
->scroll_bar_width
, width
)
6761 || !EQ (w
->vertical_scroll_bar_type
, vertical_type
))
6763 w
->scroll_bar_width
= width
;
6764 w
->vertical_scroll_bar_type
= vertical_type
;
6766 adjust_window_margins (w
);
6768 clear_glyph_matrix (w
->current_matrix
);
6769 w
->window_end_valid
= Qnil
;
6771 ++windows_or_buffers_changed
;
6772 adjust_glyphs (XFRAME (WINDOW_FRAME (w
)));
6779 DEFUN ("window-scroll-bars", Fwindow_scroll_bars
, Swindow_scroll_bars
,
6781 doc
: /* Get width and type of scroll bars of window WINDOW.
6782 If WINDOW is omitted or nil, use the currently selected window.
6783 Value is a list of the form (WIDTH COLS VERTICAL-TYPE HORIZONTAL-TYPE).
6784 If WIDTH is nil or TYPE is t, the window is using the frame's corresponding
6789 struct window
*w
= decode_window (window
);
6790 return Fcons (make_number ((WINDOW_CONFIG_SCROLL_BAR_WIDTH (w
)
6791 ? WINDOW_CONFIG_SCROLL_BAR_WIDTH (w
)
6792 : WINDOW_SCROLL_BAR_AREA_WIDTH (w
))),
6793 Fcons (make_number (WINDOW_SCROLL_BAR_COLS (w
)),
6794 Fcons (w
->vertical_scroll_bar_type
,
6795 Fcons (Qnil
, Qnil
))));
6800 /***********************************************************************
6802 ***********************************************************************/
6804 DEFUN ("window-vscroll", Fwindow_vscroll
, Swindow_vscroll
, 0, 2, 0,
6805 doc
: /* Return the amount by which WINDOW is scrolled vertically.
6806 Use the selected window if WINDOW is nil or omitted.
6807 Normally, value is a multiple of the canonical character height of WINDOW;
6808 optional second arg PIXELS-P means value is measured in pixels. */)
6810 Lisp_Object window
, pixels_p
;
6817 window
= selected_window
;
6819 CHECK_WINDOW (window
);
6820 w
= XWINDOW (window
);
6821 f
= XFRAME (w
->frame
);
6823 if (FRAME_WINDOW_P (f
))
6824 result
= (NILP (pixels_p
)
6825 ? FRAME_CANON_Y_FROM_PIXEL_Y (f
, -w
->vscroll
)
6826 : make_number (-w
->vscroll
));
6828 result
= make_number (0);
6833 DEFUN ("set-window-vscroll", Fset_window_vscroll
, Sset_window_vscroll
,
6835 doc
: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL.
6836 WINDOW nil means use the selected window. Normally, VSCROLL is a
6837 non-negative multiple of the canonical character height of WINDOW;
6838 optional third arg PIXELS-P non-nil means that VSCROLL is in pixels.
6839 If PIXELS-P is nil, VSCROLL may have to be rounded so that it
6840 corresponds to an integral number of pixels. The return value is the
6841 result of this rounding.
6842 If PIXELS-P is non-nil, the return value is VSCROLL. */)
6843 (window
, vscroll
, pixels_p
)
6844 Lisp_Object window
, vscroll
, pixels_p
;
6850 window
= selected_window
;
6852 CHECK_WINDOW (window
);
6853 CHECK_NUMBER_OR_FLOAT (vscroll
);
6855 w
= XWINDOW (window
);
6856 f
= XFRAME (w
->frame
);
6858 if (FRAME_WINDOW_P (f
))
6860 int old_dy
= w
->vscroll
;
6862 w
->vscroll
= - (NILP (pixels_p
)
6863 ? FRAME_LINE_HEIGHT (f
) * XFLOATINT (vscroll
)
6864 : XFLOATINT (vscroll
));
6865 w
->vscroll
= min (w
->vscroll
, 0);
6867 if (w
->vscroll
!= old_dy
)
6869 /* Adjust glyph matrix of the frame if the virtual display
6870 area becomes larger than before. */
6871 if (w
->vscroll
< 0 && w
->vscroll
< old_dy
)
6874 /* Prevent redisplay shortcuts. */
6875 XBUFFER (w
->buffer
)->prevent_redisplay_optimizations_p
= 1;
6879 return Fwindow_vscroll (window
, pixels_p
);
6883 /* Call FN for all leaf windows on frame F. FN is called with the
6884 first argument being a pointer to the leaf window, and with
6885 additional argument USER_DATA. Stops when FN returns 0. */
6888 foreach_window (f
, fn
, user_data
)
6890 int (* fn
) P_ ((struct window
*, void *));
6893 /* Fdelete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */
6894 if (WINDOWP (FRAME_ROOT_WINDOW (f
)))
6895 foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f
)), fn
, user_data
);
6899 /* Helper function for foreach_window. Call FN for all leaf windows
6900 reachable from W. FN is called with the first argument being a
6901 pointer to the leaf window, and with additional argument USER_DATA.
6902 Stop when FN returns 0. Value is 0 if stopped by FN. */
6905 foreach_window_1 (w
, fn
, user_data
)
6907 int (* fn
) P_ ((struct window
*, void *));
6912 for (cont
= 1; w
&& cont
;)
6914 if (!NILP (w
->hchild
))
6915 cont
= foreach_window_1 (XWINDOW (w
->hchild
), fn
, user_data
);
6916 else if (!NILP (w
->vchild
))
6917 cont
= foreach_window_1 (XWINDOW (w
->vchild
), fn
, user_data
);
6919 cont
= fn (w
, user_data
);
6921 w
= NILP (w
->next
) ? 0 : XWINDOW (w
->next
);
6928 /* Freeze or unfreeze the window start of W unless it is a
6929 mini-window or the selected window. FREEZE_P non-null means freeze
6930 the window start. */
6933 freeze_window_start (w
, freeze_p
)
6937 if (MINI_WINDOW_P (w
)
6938 || (WINDOWP (selected_window
) /* Can be nil in corner cases. */
6939 && (w
== XWINDOW (selected_window
)
6940 || (MINI_WINDOW_P (XWINDOW (selected_window
))
6941 && ! NILP (Vminibuf_scroll_window
)
6942 && w
== XWINDOW (Vminibuf_scroll_window
)))))
6945 w
->frozen_window_start_p
= freeze_p
!= NULL
;
6950 /* Freeze or unfreeze the window starts of all leaf windows on frame
6951 F, except the selected window and a mini-window. FREEZE_P non-zero
6952 means freeze the window start. */
6955 freeze_window_starts (f
, freeze_p
)
6959 foreach_window (f
, freeze_window_start
, (void *) (freeze_p
? f
: 0));
6963 /***********************************************************************
6965 ***********************************************************************/
6967 /* Return 1 if window configurations C1 and C2
6968 describe the same state of affairs. This is used by Fequal. */
6971 compare_window_configurations (c1
, c2
, ignore_positions
)
6973 int ignore_positions
;
6975 register struct save_window_data
*d1
, *d2
;
6976 struct Lisp_Vector
*sw1
, *sw2
;
6979 CHECK_WINDOW_CONFIGURATION (c1
);
6980 CHECK_WINDOW_CONFIGURATION (c2
);
6982 d1
= (struct save_window_data
*) XVECTOR (c1
);
6983 d2
= (struct save_window_data
*) XVECTOR (c2
);
6984 sw1
= XVECTOR (d1
->saved_windows
);
6985 sw2
= XVECTOR (d2
->saved_windows
);
6987 if (d1
->frame_cols
!= d2
->frame_cols
)
6989 if (d1
->frame_lines
!= d2
->frame_lines
)
6991 if (d1
->frame_menu_bar_lines
!= d2
->frame_menu_bar_lines
)
6993 if (! EQ (d1
->selected_frame
, d2
->selected_frame
))
6995 /* Don't compare the current_window field directly.
6996 Instead see w1_is_current and w2_is_current, below. */
6997 if (! EQ (d1
->current_buffer
, d2
->current_buffer
))
6999 if (! ignore_positions
)
7001 if (! EQ (d1
->minibuf_scroll_window
, d2
->minibuf_scroll_window
))
7003 if (! EQ (d1
->minibuf_selected_window
, d2
->minibuf_selected_window
))
7006 /* Don't compare the root_window field.
7007 We don't require the two configurations
7008 to use the same window object,
7009 and the two root windows must be equivalent
7010 if everything else compares equal. */
7011 if (! EQ (d1
->focus_frame
, d2
->focus_frame
))
7014 /* Verify that the two confis have the same number of windows. */
7015 if (sw1
->size
!= sw2
->size
)
7018 for (i
= 0; i
< sw1
->size
; i
++)
7020 struct saved_window
*p1
, *p2
;
7021 int w1_is_current
, w2_is_current
;
7023 p1
= SAVED_WINDOW_N (sw1
, i
);
7024 p2
= SAVED_WINDOW_N (sw2
, i
);
7026 /* Verify that the current windows in the two
7027 configurations correspond to each other. */
7028 w1_is_current
= EQ (d1
->current_window
, p1
->window
);
7029 w2_is_current
= EQ (d2
->current_window
, p2
->window
);
7031 if (w1_is_current
!= w2_is_current
)
7034 /* Verify that the corresponding windows do match. */
7035 if (! EQ (p1
->buffer
, p2
->buffer
))
7037 if (! EQ (p1
->left_col
, p2
->left_col
))
7039 if (! EQ (p1
->top_line
, p2
->top_line
))
7041 if (! EQ (p1
->total_cols
, p2
->total_cols
))
7043 if (! EQ (p1
->total_lines
, p2
->total_lines
))
7045 if (! EQ (p1
->display_table
, p2
->display_table
))
7047 if (! EQ (p1
->parent
, p2
->parent
))
7049 if (! EQ (p1
->prev
, p2
->prev
))
7051 if (! ignore_positions
)
7053 if (! EQ (p1
->hscroll
, p2
->hscroll
))
7055 if (!EQ (p1
->min_hscroll
, p2
->min_hscroll
))
7057 if (! EQ (p1
->start_at_line_beg
, p2
->start_at_line_beg
))
7059 if (NILP (Fequal (p1
->start
, p2
->start
)))
7061 if (NILP (Fequal (p1
->pointm
, p2
->pointm
)))
7063 if (NILP (Fequal (p1
->mark
, p2
->mark
)))
7066 if (! EQ (p1
->left_margin_cols
, p2
->left_margin_cols
))
7068 if (! EQ (p1
->right_margin_cols
, p2
->right_margin_cols
))
7070 if (! EQ (p1
->left_fringe_width
, p2
->left_fringe_width
))
7072 if (! EQ (p1
->right_fringe_width
, p2
->right_fringe_width
))
7074 if (! EQ (p1
->fringes_outside_margins
, p2
->fringes_outside_margins
))
7076 if (! EQ (p1
->scroll_bar_width
, p2
->scroll_bar_width
))
7078 if (! EQ (p1
->vertical_scroll_bar_type
, p2
->vertical_scroll_bar_type
))
7085 DEFUN ("compare-window-configurations", Fcompare_window_configurations
,
7086 Scompare_window_configurations
, 2, 2, 0,
7087 doc
: /* Compare two window configurations as regards the structure of windows.
7088 This function ignores details such as the values of point and mark
7089 and scrolling positions. */)
7093 if (compare_window_configurations (x
, y
, 1))
7101 struct frame
*f
= make_initial_frame ();
7102 XSETFRAME (selected_frame
, f
);
7103 Vterminal_frame
= selected_frame
;
7104 minibuf_window
= f
->minibuffer_window
;
7105 selected_window
= f
->selected_window
;
7106 last_nonminibuf_frame
= f
;
7108 window_initialized
= 1;
7114 Vwindow_list
= Qnil
;
7120 Qscroll_up
= intern ("scroll-up");
7121 staticpro (&Qscroll_up
);
7123 Qscroll_down
= intern ("scroll-down");
7124 staticpro (&Qscroll_down
);
7126 Qwindow_size_fixed
= intern ("window-size-fixed");
7127 staticpro (&Qwindow_size_fixed
);
7128 Fset (Qwindow_size_fixed
, Qnil
);
7130 staticpro (&Qwindow_configuration_change_hook
);
7131 Qwindow_configuration_change_hook
7132 = intern ("window-configuration-change-hook");
7134 Qwindowp
= intern ("windowp");
7135 staticpro (&Qwindowp
);
7137 Qwindow_configuration_p
= intern ("window-configuration-p");
7138 staticpro (&Qwindow_configuration_p
);
7140 Qwindow_live_p
= intern ("window-live-p");
7141 staticpro (&Qwindow_live_p
);
7143 Qdisplay_buffer
= intern ("display-buffer");
7144 staticpro (&Qdisplay_buffer
);
7146 Qtemp_buffer_show_hook
= intern ("temp-buffer-show-hook");
7147 staticpro (&Qtemp_buffer_show_hook
);
7149 staticpro (&Vwindow_list
);
7151 minibuf_selected_window
= Qnil
;
7152 staticpro (&minibuf_selected_window
);
7154 window_scroll_pixel_based_preserve_x
= -1;
7155 window_scroll_pixel_based_preserve_y
= -1;
7156 window_scroll_preserve_hpos
= -1;
7157 window_scroll_preserve_vpos
= -1;
7159 DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function
,
7160 doc
: /* Non-nil means call as function to display a help buffer.
7161 The function is called with one argument, the buffer to be displayed.
7162 Used by `with-output-to-temp-buffer'.
7163 If this function is used, then it must do the entire job of showing
7164 the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */);
7165 Vtemp_buffer_show_function
= Qnil
;
7167 DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window
,
7168 doc
: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */);
7169 Vminibuf_scroll_window
= Qnil
;
7171 DEFVAR_BOOL ("mode-line-in-non-selected-windows", &mode_line_in_non_selected_windows
,
7172 doc
: /* Non-nil means to use `mode-line-inactive' face in non-selected windows.
7173 If the minibuffer is active, the `minibuffer-scroll-window' mode line
7174 is displayed in the `mode-line' face. */);
7175 mode_line_in_non_selected_windows
= 1;
7177 DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer
,
7178 doc
: /* If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. */);
7179 Vother_window_scroll_buffer
= Qnil
;
7181 DEFVAR_BOOL ("auto-window-vscroll", &auto_window_vscroll_p
,
7182 doc
: /* *Non-nil means to automatically adjust `window-vscroll' to view tall lines. */);
7183 auto_window_vscroll_p
= 1;
7185 DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines
,
7186 doc
: /* *Number of lines of continuity when scrolling by screenfuls. */);
7187 next_screen_context_lines
= 2;
7189 DEFVAR_INT ("window-min-height", &window_min_height
,
7190 doc
: /* Allow deleting windows less than this tall.
7191 The value is measured in line units. If a window wants a modeline it
7192 is counted as one line.
7194 Emacs honors settings of this variable when enlarging or shrinking
7195 windows vertically. A value less than 1 is invalid. */);
7196 window_min_height
= 4;
7198 DEFVAR_INT ("window-min-width", &window_min_width
,
7199 doc
: /* Allow deleting windows less than this wide.
7200 The value is measured in characters and includes any fringes or
7203 Emacs honors settings of this variable when enlarging or shrinking
7204 windows horizontally. A value less than 2 is invalid. */);
7205 window_min_width
= 10;
7207 DEFVAR_LISP ("scroll-preserve-screen-position",
7208 &Vscroll_preserve_screen_position
,
7209 doc
: /* *Controls if scroll commands move point to keep its screen position unchanged.
7210 A value of nil means point does not keep its screen position except
7211 at the scroll margin or window boundary respectively.
7212 A value of t means point keeps its screen position if the scroll
7213 command moved it vertically out of the window, e.g. when scrolling
7215 Any other value means point always keeps its screen position. */);
7216 Vscroll_preserve_screen_position
= Qnil
;
7218 DEFVAR_LISP ("window-point-insertion-type", &Vwindow_point_insertion_type
,
7219 doc
: /* Type of marker to use for `window-point'. */);
7220 Vwindow_point_insertion_type
= Qnil
;
7222 DEFVAR_LISP ("window-configuration-change-hook",
7223 &Vwindow_configuration_change_hook
,
7224 doc
: /* Functions to call when window configuration changes.
7225 The buffer-local part is run once per window, with the relevant window
7226 selected; while the global part is run only once for the modified frame,
7227 with the relevant frame selected. */);
7228 Vwindow_configuration_change_hook
= Qnil
;
7230 defsubr (&Sselected_window
);
7231 defsubr (&Sminibuffer_window
);
7232 defsubr (&Swindow_minibuffer_p
);
7233 defsubr (&Swindowp
);
7234 defsubr (&Swindow_live_p
);
7235 defsubr (&Spos_visible_in_window_p
);
7236 defsubr (&Swindow_line_height
);
7237 defsubr (&Swindow_buffer
);
7238 defsubr (&Swindow_height
);
7239 defsubr (&Swindow_width
);
7240 defsubr (&Swindow_full_width_p
);
7241 defsubr (&Swindow_hscroll
);
7242 defsubr (&Sset_window_hscroll
);
7243 defsubr (&Swindow_redisplay_end_trigger
);
7244 defsubr (&Sset_window_redisplay_end_trigger
);
7245 defsubr (&Swindow_edges
);
7246 defsubr (&Swindow_pixel_edges
);
7247 defsubr (&Swindow_inside_edges
);
7248 defsubr (&Swindow_inside_pixel_edges
);
7249 defsubr (&Scoordinates_in_window_p
);
7250 defsubr (&Swindow_at
);
7251 defsubr (&Swindow_point
);
7252 defsubr (&Swindow_start
);
7253 defsubr (&Swindow_end
);
7254 defsubr (&Sset_window_point
);
7255 defsubr (&Sset_window_start
);
7256 defsubr (&Swindow_dedicated_p
);
7257 defsubr (&Sset_window_dedicated_p
);
7258 defsubr (&Swindow_display_table
);
7259 defsubr (&Sset_window_display_table
);
7260 defsubr (&Snext_window
);
7261 defsubr (&Sprevious_window
);
7262 defsubr (&Sother_window
);
7263 defsubr (&Sget_lru_window
);
7264 defsubr (&Sget_largest_window
);
7265 defsubr (&Sget_buffer_window
);
7266 defsubr (&Sdelete_other_windows
);
7267 defsubr (&Sdelete_windows_on
);
7268 defsubr (&Sreplace_buffer_in_windows
);
7269 defsubr (&Sdelete_window
);
7270 defsubr (&Sset_window_buffer
);
7271 defsubr (&Sselect_window
);
7272 defsubr (&Sforce_window_update
);
7273 defsubr (&Ssplit_window
);
7274 defsubr (&Senlarge_window
);
7275 defsubr (&Sshrink_window
);
7276 defsubr (&Sadjust_window_trailing_edge
);
7277 defsubr (&Sscroll_up
);
7278 defsubr (&Sscroll_down
);
7279 defsubr (&Sscroll_left
);
7280 defsubr (&Sscroll_right
);
7281 defsubr (&Sother_window_for_scrolling
);
7282 defsubr (&Sscroll_other_window
);
7283 defsubr (&Sminibuffer_selected_window
);
7284 defsubr (&Srecenter
);
7285 defsubr (&Swindow_text_height
);
7286 defsubr (&Smove_to_window_line
);
7287 defsubr (&Swindow_configuration_p
);
7288 defsubr (&Swindow_configuration_frame
);
7289 defsubr (&Sset_window_configuration
);
7290 defsubr (&Scurrent_window_configuration
);
7291 defsubr (&Ssave_window_excursion
);
7292 defsubr (&Swindow_tree
);
7293 defsubr (&Sset_window_margins
);
7294 defsubr (&Swindow_margins
);
7295 defsubr (&Sset_window_fringes
);
7296 defsubr (&Swindow_fringes
);
7297 defsubr (&Sset_window_scroll_bars
);
7298 defsubr (&Swindow_scroll_bars
);
7299 defsubr (&Swindow_vscroll
);
7300 defsubr (&Sset_window_vscroll
);
7301 defsubr (&Scompare_window_configurations
);
7302 defsubr (&Swindow_list
);
7303 defsubr (&Swindow_parameters
);
7304 defsubr (&Swindow_parameter
);
7305 defsubr (&Sset_window_parameter
);
7312 initial_define_key (control_x_map
, '1', "delete-other-windows");
7313 initial_define_key (control_x_map
, '2', "split-window");
7314 initial_define_key (control_x_map
, '0', "delete-window");
7315 initial_define_key (control_x_map
, 'o', "other-window");
7316 initial_define_key (control_x_map
, '^', "enlarge-window");
7317 initial_define_key (control_x_map
, '<', "scroll-left");
7318 initial_define_key (control_x_map
, '>', "scroll-right");
7320 initial_define_key (global_map
, Ctl ('V'), "scroll-up");
7321 initial_define_key (meta_map
, Ctl ('V'), "scroll-other-window");
7322 initial_define_key (meta_map
, 'v', "scroll-down");
7324 initial_define_key (global_map
, Ctl('L'), "recenter");
7325 initial_define_key (meta_map
, 'r', "move-to-window-line");
7328 /* arch-tag: 90a9c576-0590-48f1-a5f1-6c96a0452d9f
7329 (do not change this comment) */