/* Window creation, deletion and examination for GNU Emacs.
Does not include redisplay.
- Copyright (C) 1985,86,87,93,94,95,96,97,1998 Free Software Foundation, Inc.
+ Copyright (C) 1985,86,87,93,94,95,96,97,1998,2000
+ Free Software Foundation, Inc.
This file is part of GNU Emacs.
#include <config.h>
#include "lisp.h"
#include "buffer.h"
+#include "keyboard.h"
#include "frame.h"
#include "window.h"
#include "commands.h"
#include "indent.h"
#include "termchar.h"
#include "disptab.h"
-#include "keyboard.h"
#include "dispextern.h"
#include "blockinput.h"
#include "intervals.h"
#ifdef HAVE_X_WINDOWS
#include "xterm.h"
#endif /* HAVE_X_WINDOWS */
+#ifdef WINDOWSNT
+#include "w32term.h"
+#endif
+#ifdef MSDOS
+#include "msdos.h"
+#endif
+#ifdef macintosh
+#include "macterm.h"
+#endif
#ifndef max
#define max(a, b) ((a) < (b) ? (b) : (a))
static void window_scroll_pixel_based P_ ((Lisp_Object, int, int, int));
static void window_scroll_line_based P_ ((Lisp_Object, int, int, int));
static int window_min_size_1 P_ ((struct window *, int));
-static int window_min_size P_ ((struct window *, int, int *));
-static int window_fixed_size_p P_ ((struct window *, int, int));
+static int window_min_size P_ ((struct window *, int, int, int *));
static void size_window P_ ((Lisp_Object, int, int, int));
-static void foreach_window_1 P_ ((struct window *, void (*fn) (), int, int,
- int, int));
-static void freeze_window_start P_ ((struct window *, int));
-
+static int freeze_window_start P_ ((struct window *, void *));
+static int window_fixed_size_p P_ ((struct window *, int, int));
+static void enlarge_window P_ ((Lisp_Object, int, int));
+static Lisp_Object window_list P_ ((void));
+static int add_window_to_list P_ ((struct window *, void *));
+static int candidate_window_p P_ ((Lisp_Object, Lisp_Object, Lisp_Object,
+ Lisp_Object));
+static Lisp_Object next_window P_ ((Lisp_Object, Lisp_Object,
+ Lisp_Object, int));
+static void decode_next_window_args P_ ((Lisp_Object *, Lisp_Object *,
+ Lisp_Object *));
+static int foreach_window_1 P_ ((struct window *,
+ int (* fn) (struct window *, void *),
+ void *));
+static Lisp_Object window_list_1 P_ ((Lisp_Object, Lisp_Object, Lisp_Object));
/* This is the window in which the terminal's cursor should
be left when nothing is being done with it. This must
Lisp_Object selected_window;
+/* A list of all windows for use by next_window and Fwindow_list.
+ Functions creating or deleting windows should invalidate this cache
+ by setting it to nil. */
+
+Lisp_Object Vwindow_list;
+
/* The mini-buffer window of the selected frame.
Note that you cannot test for mini-bufferness of an arbitrary window
by comparing against this; but you can test for mini-bufferness of
int pop_up_frames;
+/* Nonzero means reuse existing frames for displaying buffers. */
+
+int display_buffer_reuse_frames;
+
/* Non-nil means use this function instead of default */
Lisp_Object Vpop_up_frame_function;
Lisp_Object Vdisplay_buffer_function;
+/* Non-nil means that Fdisplay_buffer should even the heights of windows. */
+
+Lisp_Object Veven_window_heights;
+
/* List of buffer *names* for buffers that should have their own frames. */
Lisp_Object Vspecial_display_buffer_names;
XSETFASTINT (p->height, 0);
XSETFASTINT (p->width, 0);
XSETFASTINT (p->hscroll, 0);
+ XSETFASTINT (p->min_hscroll, 0);
+ p->orig_top = p->orig_height = Qnil;
p->start = Fmake_marker ();
p->pointm = Fmake_marker ();
XSETFASTINT (p->use_time, 0);
XSETWINDOW (val, p);
XSETFASTINT (p->last_point, 0);
p->frozen_window_start_p = 0;
+
+ Vwindow_list = Qnil;
return val;
}
Lisp_Object frame;
{
if (NILP (frame))
- XSETFRAME (frame, selected_frame);
- else
- CHECK_LIVE_FRAME (frame, 0);
-
+ frame = selected_frame;
+ CHECK_LIVE_FRAME (frame, 0);
return FRAME_MINIBUF_WINDOW (XFRAME (frame));
}
Lisp_Object window;
{
struct window *w = decode_window (window);
- return (MINI_WINDOW_P (w) ? Qt : Qnil);
+ return MINI_WINDOW_P (w) ? Qt : Qnil;
}
+
DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p,
- Spos_visible_in_window_p, 0, 2, 0,
+ Spos_visible_in_window_p, 0, 3, 0,
"Return t if position POS is currently on the frame in WINDOW.\n\
-Returns nil if that position is scrolled vertically out of view.\n\
-POS defaults to point; WINDOW, to the selected window.")
- (pos, window)
- Lisp_Object pos, window;
+Return nil if that position is scrolled vertically out of view.\n\
+If a character is only partially visible, nil is returned, unless the\n\
+optional argument PARTIALLY is non-nil.\n\
+POS defaults to point in WINDOW; WINDOW defaults to the selected window.")
+ (pos, window, partially)
+ Lisp_Object pos, window, partially;
{
register struct window *w;
register int posint;
register struct buffer *buf;
struct text_pos top;
Lisp_Object in_window;
+ int fully_p;
- if (NILP (pos))
- posint = PT;
- else
+ w = decode_window (window);
+ buf = XBUFFER (w->buffer);
+ SET_TEXT_POS_FROM_MARKER (top, w->start);
+
+ if (!NILP (pos))
{
CHECK_NUMBER_COERCE_MARKER (pos, 0);
posint = XINT (pos);
}
+ else if (w == XWINDOW (selected_window))
+ posint = PT;
+ else
+ posint = XMARKER (w->pointm)->charpos;
- w = decode_window (window);
- buf = XBUFFER (w->buffer);
- SET_TEXT_POS_FROM_MARKER (top, w->start);
-
- /* If position above window, it's not visible. */
+ /* If position is above window start, it's not visible. */
if (posint < CHARPOS (top))
in_window = Qnil;
else if (XFASTINT (w->last_modified) >= BUF_MODIFF (buf)
- && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (buf)
- && posint < BUF_Z (buf) - XFASTINT (w->window_end_pos))
- /* If frame is up to date, and POSINT is < window end pos, use
- that info. This doesn't work for POSINT == end pos, because
- the window end pos is actually the position _after_ the last
- char in the window. */
- in_window = Qt;
+ && XFASTINT (w->last_overlay_modified) >= BUF_OVERLAY_MODIFF (buf)
+ && posint < BUF_Z (buf) - XFASTINT (w->window_end_pos))
+ {
+ /* If frame is up-to-date, and POSINT is < window end pos, use
+ that info. This doesn't work for POSINT == end pos, because
+ the window end pos is actually the position _after_ the last
+ char in the window. */
+ if (NILP (partially))
+ {
+ pos_visible_p (w, posint, &fully_p, NILP (partially));
+ in_window = fully_p ? Qt : Qnil;
+ }
+ else
+ in_window = Qt;
+ }
else if (posint > BUF_ZV (buf))
in_window = Qnil;
else if (CHARPOS (top) < BUF_BEGV (buf) || CHARPOS (top) > BUF_ZV (buf))
in_window = Qnil;
else
{
- struct it it;
- start_display (&it, w, top);
- move_it_to (&it, posint, 0, it.last_visible_y, -1,
- MOVE_TO_POS | MOVE_TO_X | MOVE_TO_Y);
- in_window = IT_CHARPOS (it) == posint ? Qt : Qnil;
+ if (pos_visible_p (w, posint, &fully_p, NILP (partially)))
+ in_window = !NILP (partially) || fully_p ? Qt : Qnil;
+ else
+ in_window = Qnil;
}
return in_window;
}
+
\f
static struct window *
decode_window (window)
"Set number of columns WINDOW is scrolled from left margin to NCOL.\n\
NCOL should be zero or positive.")
(window, ncol)
- register Lisp_Object window, ncol;
+ Lisp_Object window, ncol;
{
- register struct window *w;
+ struct window *w = decode_window (window);
+ int hscroll;
CHECK_NUMBER (ncol, 1);
- if (XINT (ncol) < 0) XSETFASTINT (ncol, 0);
- w = decode_window (window);
- if (XINT (w->hscroll) != XINT (ncol))
- /* Prevent redisplay shortcuts */
+ hscroll = max (0, XINT (ncol));
+
+ /* Prevent redisplay shortcuts when changing the hscroll. */
+ if (XINT (w->hscroll) != hscroll)
XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1;
- w->hscroll = ncol;
+
+ w->hscroll = w->min_hscroll = make_number (hscroll);
return ncol;
}
register struct window *w;
register int *x, *y;
{
+ /* Let's make this a global enum later, instead of using numbers
+ everywhere. */
+ enum {ON_NOTHING, ON_TEXT, ON_MODE_LINE, ON_VERTICAL_BORDER,
+ ON_HEADER_LINE, ON_LEFT_FRINGE, ON_RIGHT_FRINGE};
+
struct frame *f = XFRAME (WINDOW_FRAME (w));
int left_x, right_x, top_y, bottom_y;
int flags_area_width = FRAME_LEFT_FLAGS_AREA_WIDTH (f);
+ int part;
+ int ux = CANON_X_UNIT (f), uy = CANON_Y_UNIT (f);
+ int x0 = XFASTINT (w->left) * ux;
+ int x1 = x0 + XFASTINT (w->width) * ux;
+ if (*x < x0 || *x >= x1)
+ return ON_NOTHING;
+
+ /* In what's below, we subtract 1 when computing right_x because we
+ want the rightmost pixel, which is given by left_pixel+width-1. */
if (w->pseudo_window_p)
{
left_x = 0;
- right_x = XFASTINT (w->width) * CANON_Y_UNIT (f);
+ right_x = XFASTINT (w->width) * CANON_X_UNIT (f) - 1;
top_y = WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w);
bottom_y = WINDOW_DISPLAY_BOTTOM_EDGE_PIXEL_Y (w);
}
else
{
- left_x = WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X (w);
- right_x = WINDOW_DISPLAY_RIGHT_EDGE_PIXEL_X (w);
- top_y = WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w);
+ left_x = (WINDOW_DISPLAY_LEFT_EDGE_PIXEL_X (w)
+ - FRAME_INTERNAL_BORDER_WIDTH_SAFE (f));
+ right_x = WINDOW_DISPLAY_RIGHT_EDGE_PIXEL_X (w) - 1;
+ top_y = (WINDOW_DISPLAY_TOP_EDGE_PIXEL_Y (w)
+ - FRAME_INTERNAL_BORDER_WIDTH_SAFE (f));
bottom_y = WINDOW_DISPLAY_BOTTOM_EDGE_PIXEL_Y (w);
}
- if (*y < top_y
- || *y >= bottom_y
- || *x < (left_x
- - flags_area_width
- - (FRAME_LEFT_SCROLL_BAR_WIDTH (f)
- * CANON_X_UNIT (f)))
- || *x > right_x + flags_area_width)
- /* Completely outside anything interesting. */
- return 0;
- else if (WINDOW_WANTS_MODELINE_P (w)
- && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w))
- /* On the mode line. */
- return 2;
- else if (WINDOW_WANTS_TOP_LINE_P (w)
- && *y < top_y + CURRENT_TOP_LINE_HEIGHT (w))
- /* On the top line. */
- return 4;
- else if (*x < left_x || *x >= right_x)
+ /* On the mode line or header line? If it's near the start of
+ the mode or header line of window that's has a horizontal
+ sibling, say it's on the vertical line. That's to be able
+ to resize windows horizontally in case we're using toolkit
+ scroll bars. */
+
+ if (WINDOW_WANTS_MODELINE_P (w)
+ && *y >= bottom_y - CURRENT_MODE_LINE_HEIGHT (w)
+ && *y < bottom_y)
{
- /* Other lines than the mode line don't include flags areas and
- scroll bars on the left. */
+ /* We're somewhere on the mode line. We consider the place
+ between mode lines of horizontally adjacent mode lines
+ as the vertical border. If scroll bars on the left,
+ return the right window. */
+ part = ON_MODE_LINE;
- /* Convert X and Y to window-relative pixel coordinates. */
- *x -= left_x;
- *y -= top_y;
- return *x < left_x ? 5 : 6;
+ if (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_LEFT (f))
+ {
+ if (abs (*x - x0) < ux / 2)
+ part = ON_VERTICAL_BORDER;
+ }
+ else if (!WINDOW_RIGHTMOST_P (w) && abs (*x - x1) < ux / 2)
+ part = ON_VERTICAL_BORDER;
+ }
+ else if (WINDOW_WANTS_HEADER_LINE_P (w)
+ && *y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)
+ && *y >= top_y)
+ {
+ part = ON_HEADER_LINE;
+
+ if (FRAME_HAS_VERTICAL_SCROLL_BARS_ON_LEFT (f))
+ {
+ if (abs (*x - x0) < ux / 2)
+ part = ON_VERTICAL_BORDER;
+ }
+ else if (!WINDOW_RIGHTMOST_P (w) && abs (*x - x1) < ux / 2)
+ part = ON_VERTICAL_BORDER;
+ }
+ /* Outside anything interesting? */
+ else if (*y < top_y
+ || *y >= bottom_y
+ || *x < (left_x
+ - flags_area_width
+ - FRAME_LEFT_SCROLL_BAR_WIDTH (f) * ux)
+ || *x > right_x + flags_area_width)
+ {
+ part = ON_NOTHING;
+ }
+ else if (FRAME_WINDOW_P (f))
+ {
+ if (!w->pseudo_window_p
+ && !FRAME_HAS_VERTICAL_SCROLL_BARS (f)
+ && !WINDOW_RIGHTMOST_P (w)
+ && (abs (*x - right_x - flags_area_width) < ux / 2))
+ {
+ part = ON_VERTICAL_BORDER;
+ }
+ else if (*x < left_x || *x > right_x)
+ {
+ /* Other lines than the mode line don't include flags areas and
+ scroll bars on the left. */
+
+ /* Convert X and Y to window-relative pixel coordinates. */
+ *x -= left_x;
+ *y -= top_y;
+ part = *x < left_x ? ON_LEFT_FRINGE : ON_RIGHT_FRINGE;
+ }
+ else
+ {
+ *x -= left_x;
+ *y -= top_y;
+ part = ON_TEXT;
+ }
}
- else if (!w->pseudo_window_p
- && !WINDOW_RIGHTMOST_P (w)
- && *x >= right_x - CANON_X_UNIT (f))
- /* On the border on the right side of the window? Assume that
- this area begins at RIGHT_X minus a canonical char width. */
- return 3;
else
{
- /* Convert X and Y to window-relative pixel coordinates. */
- *x -= left_x;
- *y -= top_y;
- return 1;
+ /* Need to say "*x > right_x" rather than >=, since on character
+ terminals, the vertical line's x coordinate is right_x. */
+ if (*x < left_x || *x > right_x)
+ {
+ /* Other lines than the mode line don't include flags areas and
+ scroll bars on the left. */
+
+ /* Convert X and Y to window-relative pixel coordinates. */
+ *x -= left_x;
+ *y -= top_y;
+ part = *x < left_x ? ON_LEFT_FRINGE : ON_RIGHT_FRINGE;
+ }
+ /* Here, too, "*x > right_x" is because of character terminals. */
+ else if (!w->pseudo_window_p
+ && !WINDOW_RIGHTMOST_P (w)
+ && *x > right_x - ux)
+ {
+ /* On the border on the right side of the window? Assume that
+ this area begins at RIGHT_X minus a canonical char width. */
+ part = ON_VERTICAL_BORDER;
+ }
+ else
+ {
+ /* Convert X and Y to window-relative pixel coordinates. */
+ *x -= left_x;
+ *y -= top_y;
+ part = ON_TEXT;
+ }
}
+
+ return part;
}
+
DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p,
Scoordinates_in_window_p, 2, 2, 0,
"Return non-nil if COORDINATES are in WINDOW.\n\
If COORDINATES are in the text portion of WINDOW,\n\
the coordinates relative to the window are returned.\n\
If they are in the mode line of WINDOW, `mode-line' is returned.\n\
-If they are in the top mode line of WINDOW, `top-line' is returned.\n\
+If they are in the top mode line of WINDOW, `header-line' is returned.\n\
If they are in the bitmap-area to the left of the window,\n\
`left-bitmap-area' is returned, if they are in the area on the right of\n\
the window, `right-bitmap-area' is returned.\n\
return Qvertical_line;
case 4:
- return Qtop_line;
+ return Qheader_line;
case 5:
return Qleft_bitmap_area;
}
}
+
+/* Callback for foreach_window, used in window_from_coordinates.
+ Check if window W contains coordinates specified by USER_DATA which
+ is actually a pointer to a struct check_window_data CW.
+
+ Check if window W contains coordinates *CW->x and *CW->y. If it
+ does, return W in *CW->window, as Lisp_Object, and return in
+ *CW->part the part of the window under coordinates *X,*Y. Return
+ zero from this function to stop iterating over windows. */
+
+struct check_window_data
+{
+ Lisp_Object *window;
+ int *x, *y, *part;
+};
+
+static int
+check_window_containing (w, user_data)
+ struct window *w;
+ void *user_data;
+{
+ struct check_window_data *cw = (struct check_window_data *) user_data;
+ int found;
+
+ found = coordinates_in_window (w, cw->x, cw->y);
+ if (found)
+ {
+ *cw->part = found - 1;
+ XSETWINDOW (*cw->window, w);
+ }
+
+ return !found;
+}
+
+
/* Find the window containing frame-relative pixel position X/Y and
return it as a Lisp_Object. If X, Y is on the window's modeline,
set *PART to 1; if it is on the separating line between the window
and its right sibling, set it to 2; otherwise set it to 0. If
there is no window under X, Y return nil and leave *PART
- unmodified. TOOLBAR_P non-zero means detect toolbar windows. */
+ unmodified. TOOL_BAR_P non-zero means detect tool-bar windows.
+
+ This function was previously implemented with a loop cycling over
+ windows with Fnext_window, and starting with the frame's selected
+ window. It turned out that this doesn't work with an
+ implementation of next_window using Vwindow_list, because
+ FRAME_SELECTED_WINDOW (F) is not always contained in the window
+ tree of F when this function is called asynchronously from
+ note_mouse_highlight. The original loop didn't terminate in this
+ case. */
Lisp_Object
-window_from_coordinates (frame, x, y, part, toolbar_p)
- FRAME_PTR frame;
+window_from_coordinates (f, x, y, part, tool_bar_p)
+ struct frame *f;
int x, y;
int *part;
- int toolbar_p;
+ int tool_bar_p;
{
- register Lisp_Object tem, first;
- int found;
-
- tem = first = FRAME_SELECTED_WINDOW (frame);
-
- do
- {
- found = coordinates_in_window (XWINDOW (tem), &x, &y);
-
- if (found)
- {
- *part = found - 1;
- return tem;
- }
-
- tem = Fnext_window (tem, Qt, Qlambda);
- }
- while (!EQ (tem, first));
+ Lisp_Object window;
+ struct check_window_data cw;
- /* See if it's in the toolbar window, if a toolbar exists. */
- if (toolbar_p
- && WINDOWP (frame->toolbar_window)
- && XFASTINT (XWINDOW (frame->toolbar_window)->height)
- && coordinates_in_window (XWINDOW (frame->toolbar_window), &x, &y))
+ window = Qnil;
+ cw.window = &window, cw.x = &x, cw.y = &y; cw.part = part;
+ foreach_window (f, check_window_containing, &cw);
+
+ /* If not found above, see if it's in the tool bar window, if a tool
+ bar exists. */
+ if (NILP (window)
+ && tool_bar_p
+ && WINDOWP (f->tool_bar_window)
+ && XINT (XWINDOW (f->tool_bar_window)->height) > 0
+ && coordinates_in_window (XWINDOW (f->tool_bar_window), &x, &y))
{
*part = 0;
- return frame->toolbar_window;
+ window = f->tool_bar_window;
}
- return Qnil;
+ return window;
}
DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0,
struct frame *f;
if (NILP (frame))
- XSETFRAME (frame, selected_frame);
- else
- CHECK_LIVE_FRAME (frame, 2);
+ frame = selected_frame;
+ CHECK_LIVE_FRAME (frame, 2);
f = XFRAME (frame);
/* Check that arguments are integers or floats. */
&& ! (! NILP (w->window_end_valid)
&& XFASTINT (w->last_modified) >= MODIFF))
{
- int opoint = PT, opoint_byte = PT_BYTE;
- TEMP_SET_PT_BOTH (XMARKER (w->start)->charpos,
- XMARKER (w->start)->bytepos);
- Fvertical_motion (make_number (window_internal_height (w)), Qnil);
- XSETINT (value, PT);
- TEMP_SET_PT_BOTH (opoint, opoint_byte);
+ struct text_pos startp;
+ struct it it;
+
+ /* In case W->start is out of the range, use something
+ reasonable. This situation occured when loading a file with
+ `-l' containing a call to `rmail' with subsequent other
+ commands. At the end, W->start happened to be BEG, while
+ rmail had already narrowed the buffer. */
+ if (XMARKER (w->start)->charpos < BEGV)
+ SET_TEXT_POS (startp, BEGV, BEGV_BYTE);
+ else if (XMARKER (w->start)->charpos > ZV)
+ SET_TEXT_POS (startp, ZV, ZV_BYTE);
+ else
+ SET_TEXT_POS_FROM_MARKER (startp, w->start);
+
+ /* Cannot use Fvertical_motion because that function doesn't
+ cope with variable-height lines. */
+ start_display (&it, w, startp);
+ move_it_vertically (&it, window_box_height (w));
+ value = make_number (IT_CHARPOS (it));
}
else
- XSETINT (value,
- BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos));
+ XSETINT (value, BUF_Z (XBUFFER (buf)) - XFASTINT (w->window_end_pos));
return value;
}
Fgoto_char (pos);
else
set_marker_restricted (w->pointm, pos, w->buffer);
+
+ /* We have to make sure that redisplay updates the window to show
+ the new value of point. */
+ if (!EQ (window, selected_window))
+ ++windows_or_buffers_changed;
return pos;
}
window_display_table (w)
struct window *w;
{
- Lisp_Object tem;
- tem = w->display_table;
- if (DISP_TABLE_P (tem))
- return XCHAR_TABLE (tem);
- if (NILP (w->buffer))
- return 0;
+ struct Lisp_Char_Table *dp = NULL;
- tem = XBUFFER (w->buffer)->display_table;
- if (DISP_TABLE_P (tem))
- return XCHAR_TABLE (tem);
- tem = Vstandard_display_table;
- if (DISP_TABLE_P (tem))
- return XCHAR_TABLE (tem);
- return 0;
+ if (DISP_TABLE_P (w->display_table))
+ dp = XCHAR_TABLE (w->display_table);
+ else if (BUFFERP (w->buffer))
+ {
+ struct buffer *b = XBUFFER (w->buffer);
+
+ if (DISP_TABLE_P (b->display_table))
+ dp = XCHAR_TABLE (b->display_table);
+ else if (DISP_TABLE_P (Vstandard_display_table))
+ dp = XCHAR_TABLE (Vstandard_display_table);
+ }
+
+ return dp;
}
DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0,
if (b != XMARKER (w->pointm)->buffer)
abort ();
- if (w == XWINDOW (b->last_selected_window))
- b->last_selected_window = Qnil;
-
#if 0
if (w == XWINDOW (selected_window)
|| ! EQ (buf, XWINDOW (selected_window)->buffer))
/* Point in the selected window's buffer
is actually stored in that buffer, and the window's pointm isn't used.
So don't clobber point in that buffer. */
- if (! EQ (buf, XWINDOW (selected_window)->buffer))
+ if (! EQ (buf, XWINDOW (selected_window)->buffer)
+ /* This line helps to fix Horsley's testbug.el bug. */
+ && !(WINDOWP (b->last_selected_window)
+ && w != XWINDOW (b->last_selected_window)
+ && EQ (buf, XWINDOW (b->last_selected_window)->buffer)))
temp_set_point_both (b,
clip_to_bounds (BUF_BEGV (b),
XMARKER (w->pointm)->charpos,
clip_to_bounds (BUF_BEGV_BYTE (b),
marker_byte_position (w->pointm),
BUF_ZV_BYTE (b)));
+
+ if (WINDOWP (b->last_selected_window)
+ && w == XWINDOW (b->last_selected_window))
+ b->last_selected_window = Qnil;
}
/* Put replacement into the window structure in place of old. */
XSETFASTINT (p->window_end_pos, 0);
p->window_end_valid = Qnil;
p->frozen_window_start_p = 0;
+ p->orig_top = p->orig_height = Qnil;
p->next = tem = o->next;
if (!NILP (tem))
par = XWINDOW (parent);
windows_or_buffers_changed++;
+ Vwindow_list = Qnil;
frame = XFRAME (WINDOW_FRAME (p));
FRAME_WINDOW_SIZES_CHANGED (frame) = 1;
unchain_marker (p->start);
}
- /* Free window glyph matrices.
- It is sure that they are allocated again when ADJUST_GLYPHS
- is called. */
+ /* Free window glyph matrices. It is sure that they are allocated
+ again when ADJUST_GLYPHS is called. Block input so that expose
+ events and other events that access glyph matrices are not
+ processed while we are changing them. */
+ BLOCK_INPUT;
free_window_matrices (XWINDOW (FRAME_ROOT_WINDOW (frame)));
tem = p->next;
/* Adjust glyph matrices. */
adjust_glyphs (frame);
+ UNBLOCK_INPUT;
}
+
+
\f
+/***********************************************************************
+ Window List
+ ***********************************************************************/
+
+/* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object
+ pointer. This is a callback function for foreach_window, used in
+ function window_list. */
+
+static int
+add_window_to_list (w, user_data)
+ struct window *w;
+ void *user_data;
+{
+ Lisp_Object *list = (Lisp_Object *) user_data;
+ Lisp_Object window;
+ XSETWINDOW (window, w);
+ *list = Fcons (window, *list);
+ return 1;
+}
+
+
+/* Return a list of all windows, for use by next_window. If
+ Vwindow_list is a list, return that list. Otherwise, build a new
+ list, cache it in Vwindow_list, and return that. */
+
+static Lisp_Object
+window_list ()
+{
+ if (!CONSP (Vwindow_list))
+ {
+ Lisp_Object tail;
+
+ Vwindow_list = Qnil;
+ for (tail = Vframe_list; CONSP (tail); tail = XCDR (tail))
+ {
+ Lisp_Object args[2];
+
+ /* We are visiting windows in canonical order, and add
+ new windows at the front of args[1], which means we
+ have to reverse this list at the end. */
+ args[1] = Qnil;
+ foreach_window (XFRAME (XCAR (tail)), add_window_to_list, &args[1]);
+ args[0] = Vwindow_list;
+ args[1] = Fnreverse (args[1]);
+ Vwindow_list = Fnconc (2, args);
+ }
+ }
+
+ return Vwindow_list;
+}
+
+
+/* Value is non-zero if WINDOW satisfies the constraints given by
+ OWINDOW, MINIBUF and ALL_FRAMES.
+
+ MINIBUF t means WINDOW may be minibuffer windows.
+ `lambda' means WINDOW may not be a minibuffer window.
+ a window means a specific minibuffer window
+
+ ALL_FRAMES t means search all frames,
+ nil means search just current frame,
+ `visible' means search just visible frames,
+ 0 means search visible and iconified frames,
+ a window means search the frame that window belongs to,
+ a frame means consider windows on that frame, only. */
+
+static int
+candidate_window_p (window, owindow, minibuf, all_frames)
+ Lisp_Object window, owindow, minibuf, all_frames;
+{
+ struct window *w = XWINDOW (window);
+ struct frame *f = XFRAME (w->frame);
+ int candidate_p = 1;
+
+ if (!BUFFERP (w->buffer))
+ candidate_p = 0;
+ else if (MINI_WINDOW_P (w)
+ && (EQ (minibuf, Qlambda)
+ || (WINDOWP (minibuf) && !EQ (minibuf, window))))
+ {
+ /* If MINIBUF is `lambda' don't consider any mini-windows.
+ If it is a window, consider only that one. */
+ candidate_p = 0;
+ }
+ else if (EQ (all_frames, Qt))
+ candidate_p = 1;
+ else if (NILP (all_frames))
+ {
+ xassert (WINDOWP (owindow));
+ candidate_p = EQ (w->frame, XWINDOW (owindow)->frame);
+ }
+ else if (EQ (all_frames, Qvisible))
+ {
+ FRAME_SAMPLE_VISIBILITY (f);
+ candidate_p = FRAME_VISIBLE_P (f);
+ }
+ else if (INTEGERP (all_frames) && XINT (all_frames) == 0)
+ {
+ FRAME_SAMPLE_VISIBILITY (f);
+ candidate_p = FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f);
+ }
+ else if (WINDOWP (all_frames))
+ candidate_p = (EQ (FRAME_MINIBUF_WINDOW (f), all_frames)
+ || EQ (XWINDOW (all_frames)->frame, w->frame)
+ || EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f)));
+ else if (FRAMEP (all_frames))
+ candidate_p = EQ (all_frames, w->frame);
+
+ return candidate_p;
+}
+
+
+/* Decode arguments as allowed by Fnext_window, Fprevious_window, and
+ Fwindow_list. See there for the meaning of WINDOW, MINIBUF, and
+ ALL_FRAMES. */
+
+static void
+decode_next_window_args (window, minibuf, all_frames)
+ Lisp_Object *window, *minibuf, *all_frames;
+{
+ if (NILP (*window))
+ *window = selected_window;
+ else
+ CHECK_LIVE_WINDOW (*window, 0);
+
+ /* MINIBUF nil may or may not include minibuffers. Decide if it
+ does. */
+ if (NILP (*minibuf))
+ *minibuf = minibuf_level ? minibuf_window : Qlambda;
+ else if (!EQ (*minibuf, Qt))
+ *minibuf = Qlambda;
+
+ /* Now *MINIBUF can be t => count all minibuffer windows, `lambda'
+ => count none of them, or a specific minibuffer window (the
+ active one) to count. */
+
+ /* ALL_FRAMES nil doesn't specify which frames to include. */
+ if (NILP (*all_frames))
+ *all_frames = (!EQ (*minibuf, Qlambda)
+ ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame))
+ : Qnil);
+ else if (EQ (*all_frames, Qvisible))
+ ;
+ else if (XFASTINT (*all_frames) == 0)
+ ;
+ else if (FRAMEP (*all_frames))
+ ;
+ else if (!EQ (*all_frames, Qt))
+ *all_frames = Qnil;
+
+ /* Now *ALL_FRAMES is t meaning search all frames, nil meaning
+ search just current frame, `visible' meaning search just visible
+ frames, 0 meaning search visible and iconified frames, or a
+ window, meaning search the frame that window belongs to, or a
+ frame, meaning consider windows on that frame, only. */
+}
+
+
+/* Return the next or previous window of WINDOW in canonical ordering
+ of windows. NEXT_P non-zero means return the next window. See the
+ documentation string of next-window for the meaning of MINIBUF and
+ ALL_FRAMES. */
+
+static Lisp_Object
+next_window (window, minibuf, all_frames, next_p)
+ Lisp_Object window, minibuf, all_frames;
+ int next_p;
+{
+ decode_next_window_args (&window, &minibuf, &all_frames);
+
+ /* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just
+ return the first window on the frame. */
+ if (FRAMEP (all_frames)
+ && !EQ (all_frames, XWINDOW (window)->frame))
+ return Fframe_first_window (all_frames);
+
+ if (next_p)
+ {
+ Lisp_Object list;
+
+ /* Find WINDOW in the list of all windows. */
+ list = Fmemq (window, window_list ());
+
+ /* Scan forward from WINDOW to the end of the window list. */
+ if (CONSP (list))
+ for (list = XCDR (list); CONSP (list); list = XCDR (list))
+ if (candidate_window_p (XCAR (list), window, minibuf, all_frames))
+ break;
+
+ /* Scan from the start of the window list up to WINDOW. */
+ if (!CONSP (list))
+ for (list = Vwindow_list;
+ CONSP (list) && !EQ (XCAR (list), window);
+ list = XCDR (list))
+ if (candidate_window_p (XCAR (list), window, minibuf, all_frames))
+ break;
+
+ if (CONSP (list))
+ window = XCAR (list);
+ }
+ else
+ {
+ Lisp_Object candidate, list;
+
+ /* Scan through the list of windows for candidates. If there are
+ candidate windows in front of WINDOW, the last one of these
+ is the one we want. If there are candidates following WINDOW
+ in the list, again the last one of these is the one we want. */
+ candidate = Qnil;
+ for (list = window_list (); CONSP (list); list = XCDR (list))
+ {
+ if (EQ (XCAR (list), window))
+ {
+ if (WINDOWP (candidate))
+ break;
+ }
+ else if (candidate_window_p (XCAR (list), window, minibuf,
+ all_frames))
+ candidate = XCAR (list);
+ }
+
+ if (WINDOWP (candidate))
+ window = candidate;
+ }
+
+ return window;
+}
-extern Lisp_Object next_frame (), prev_frame ();
/* This comment supplies the doc string for `next-window',
for make-docfile to see. We cannot put this in the real DEFUN
DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0,
0)
(window, minibuf, all_frames)
- register Lisp_Object window, minibuf, all_frames;
+ Lisp_Object window, minibuf, all_frames;
{
- register Lisp_Object tem;
- Lisp_Object start_window;
-
- if (NILP (window))
- window = selected_window;
- else
- CHECK_LIVE_WINDOW (window, 0);
-
- start_window = window;
-
- /* minibuf == nil may or may not include minibuffers.
- Decide if it does. */
- if (NILP (minibuf))
- minibuf = (minibuf_level ? minibuf_window : Qlambda);
- else if (! EQ (minibuf, Qt))
- minibuf = Qlambda;
- /* Now minibuf can be t => count all minibuffer windows,
- lambda => count none of them,
- or a specific minibuffer window (the active one) to count. */
-
- /* all_frames == nil doesn't specify which frames to include. */
- if (NILP (all_frames))
- all_frames = (! EQ (minibuf, Qlambda)
- ? (FRAME_MINIBUF_WINDOW
- (XFRAME
- (WINDOW_FRAME
- (XWINDOW (window)))))
- : Qnil);
- else if (EQ (all_frames, Qvisible))
- ;
- else if (XFASTINT (all_frames) == 0)
- ;
- else if (FRAMEP (all_frames) && ! EQ (all_frames, Fwindow_frame (window)))
- /* If all_frames is a frame and window arg isn't on that frame, just
- return the first window on the frame. */
- return Fframe_first_window (all_frames);
- else if (! EQ (all_frames, Qt))
- all_frames = Qnil;
- /* Now all_frames is t meaning search all frames,
- nil meaning search just current frame,
- visible meaning search just visible frames,
- 0 meaning search visible and iconified frames,
- or a window, meaning search the frame that window belongs to. */
-
- /* Do this loop at least once, to get the next window, and perhaps
- again, if we hit the minibuffer and that is not acceptable. */
- do
- {
- /* Find a window that actually has a next one. This loop
- climbs up the tree. */
- while (tem = XWINDOW (window)->next, NILP (tem))
- if (tem = XWINDOW (window)->parent, !NILP (tem))
- window = tem;
- else
- {
- /* We've reached the end of this frame.
- Which other frames are acceptable? */
- tem = WINDOW_FRAME (XWINDOW (window));
- if (! NILP (all_frames))
- {
- Lisp_Object tem1;
-
- tem1 = tem;
- tem = next_frame (tem, all_frames);
- /* In the case where the minibuffer is active,
- and we include its frame as well as the selected one,
- next_frame may get stuck in that frame.
- If that happens, go back to the selected frame
- so we can complete the cycle. */
- if (EQ (tem, tem1))
- XSETFRAME (tem, selected_frame);
- }
- tem = FRAME_ROOT_WINDOW (XFRAME (tem));
-
- break;
- }
-
- window = tem;
-
- /* If we're in a combination window, find its first child and
- recurse on that. Otherwise, we've found the window we want. */
- while (1)
- {
- if (!NILP (XWINDOW (window)->hchild))
- window = XWINDOW (window)->hchild;
- else if (!NILP (XWINDOW (window)->vchild))
- window = XWINDOW (window)->vchild;
- else break;
- }
- }
- /* Which windows are acceptable?
- Exit the loop and accept this window if
- this isn't a minibuffer window,
- or we're accepting all minibuffer windows,
- or this is the active minibuffer and we are accepting that one, or
- we've come all the way around and we're back at the original window. */
- while (MINI_WINDOW_P (XWINDOW (window))
- && ! EQ (minibuf, Qt)
- && ! EQ (minibuf, window)
- && ! EQ (window, start_window));
-
- return window;
+ return next_window (window, minibuf, all_frames, 1);
}
+
/* This comment supplies the doc string for `previous-window',
for make-docfile to see. We cannot put this in the real DEFUN
due to limits in the Unix cpp.
DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0,
0)
(window, minibuf, all_frames)
- register Lisp_Object window, minibuf, all_frames;
+ Lisp_Object window, minibuf, all_frames;
{
- register Lisp_Object tem;
- Lisp_Object start_window;
-
- if (NILP (window))
- window = selected_window;
- else
- CHECK_LIVE_WINDOW (window, 0);
-
- start_window = window;
-
- /* minibuf == nil may or may not include minibuffers.
- Decide if it does. */
- if (NILP (minibuf))
- minibuf = (minibuf_level ? minibuf_window : Qlambda);
- else if (! EQ (minibuf, Qt))
- minibuf = Qlambda;
- /* Now minibuf can be t => count all minibuffer windows,
- lambda => count none of them,
- or a specific minibuffer window (the active one) to count. */
-
- /* all_frames == nil doesn't specify which frames to include.
- Decide which frames it includes. */
- if (NILP (all_frames))
- all_frames = (! EQ (minibuf, Qlambda)
- ? (FRAME_MINIBUF_WINDOW
- (XFRAME
- (WINDOW_FRAME
- (XWINDOW (window)))))
- : Qnil);
- else if (EQ (all_frames, Qvisible))
- ;
- else if (XFASTINT (all_frames) == 0)
- ;
- else if (FRAMEP (all_frames) && ! EQ (all_frames, Fwindow_frame (window)))
- /* If all_frames is a frame and window arg isn't on that frame, just
- return the first window on the frame. */
- return Fframe_first_window (all_frames);
- else if (! EQ (all_frames, Qt))
- all_frames = Qnil;
- /* Now all_frames is t meaning search all frames,
- nil meaning search just current frame,
- visible meaning search just visible frames,
- 0 meaning search visible and iconified frames,
- or a window, meaning search the frame that window belongs to. */
-
- /* Do this loop at least once, to get the previous window, and perhaps
- again, if we hit the minibuffer and that is not acceptable. */
- do
- {
- /* Find a window that actually has a previous one. This loop
- climbs up the tree. */
- while (tem = XWINDOW (window)->prev, NILP (tem))
- if (tem = XWINDOW (window)->parent, !NILP (tem))
- window = tem;
- else
- {
- /* We have found the top window on the frame.
- Which frames are acceptable? */
- tem = WINDOW_FRAME (XWINDOW (window));
- if (! NILP (all_frames))
- /* It's actually important that we use prev_frame here,
- rather than next_frame. All the windows acceptable
- according to the given parameters should form a ring;
- Fnext_window and Fprevious_window should go back and
- forth around the ring. If we use next_frame here,
- then Fnext_window and Fprevious_window take different
- paths through the set of acceptable windows.
- window_loop assumes that these `ring' requirement are
- met. */
- {
- Lisp_Object tem1;
-
- tem1 = tem;
- tem = prev_frame (tem, all_frames);
- /* In the case where the minibuffer is active,
- and we include its frame as well as the selected one,
- next_frame may get stuck in that frame.
- If that happens, go back to the selected frame
- so we can complete the cycle. */
- if (EQ (tem, tem1))
- XSETFRAME (tem, selected_frame);
- }
- /* If this frame has a minibuffer, find that window first,
- because it is conceptually the last window in that frame. */
- if (FRAME_HAS_MINIBUF_P (XFRAME (tem)))
- tem = FRAME_MINIBUF_WINDOW (XFRAME (tem));
- else
- tem = FRAME_ROOT_WINDOW (XFRAME (tem));
-
- break;
- }
-
- window = tem;
- /* If we're in a combination window, find its last child and
- recurse on that. Otherwise, we've found the window we want. */
- while (1)
- {
- if (!NILP (XWINDOW (window)->hchild))
- window = XWINDOW (window)->hchild;
- else if (!NILP (XWINDOW (window)->vchild))
- window = XWINDOW (window)->vchild;
- else break;
- while (tem = XWINDOW (window)->next, !NILP (tem))
- window = tem;
- }
- }
- /* Which windows are acceptable?
- Exit the loop and accept this window if
- this isn't a minibuffer window,
- or we're accepting all minibuffer windows,
- or this is the active minibuffer and we are accepting that one, or
- we've come all the way around and we're back at the original window. */
- while (MINI_WINDOW_P (XWINDOW (window))
- && ! EQ (minibuf, Qt)
- && ! EQ (minibuf, window)
- && ! EQ (window, start_window));
-
- return window;
+ return next_window (window, minibuf, all_frames, 0);
}
+
DEFUN ("other-window", Fother_window, Sother_window, 1, 2, "p",
"Select the ARG'th different window on this frame.\n\
All windows on current frame are arranged in a cyclic order.\n\
A negative ARG moves in the opposite order. If the optional second\n\
argument ALL_FRAMES is non-nil, cycle through all frames.")
(arg, all_frames)
- register Lisp_Object arg, all_frames;
+ Lisp_Object arg, all_frames;
{
- register int i;
- register Lisp_Object w;
+ Lisp_Object window;
+ int i;
CHECK_NUMBER (arg, 0);
- w = selected_window;
- i = XINT (arg);
-
- while (i > 0)
- {
- w = Fnext_window (w, Qnil, all_frames);
- i--;
- }
- while (i < 0)
- {
- w = Fprevious_window (w, Qnil, all_frames);
- i++;
- }
- Fselect_window (w);
+ window = selected_window;
+
+ for (i = XINT (arg); i > 0; --i)
+ window = Fnext_window (window, Qnil, all_frames);
+ for (; i < 0; ++i)
+ window = Fprevious_window (window, Qnil, all_frames);
+
+ Fselect_window (window);
return Qnil;
}
+
+
+DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0,
+ "Return a list of windows on FRAME, starting with WINDOW.\n\
+FRAME nil or omitted means use the selected frame.\n\
+WINDOW nil or omitted means use the selected window.\n\
+MINIBUF t means include the minibuffer window, even if it isn't active.\n\
+MINIBUF nil or omitted means include the minibuffer window only\n\
+if it's active.\n\
+MINIBUF neither nil nor t means never include the minibuffer window.")
+ (frame, minibuf, window)
+ Lisp_Object frame, minibuf, window;
+{
+
+ if (NILP (window))
+ window = selected_window;
+ if (NILP (frame))
+ frame = selected_frame;
+
+ if (!EQ (frame, XWINDOW (window)->frame))
+ error ("Window is on a different frame");
+
+ return window_list_1 (window, minibuf, frame);
+}
+
+
+/* Return a list of windows in canonical ordering. Arguments are like
+ for `next-window'. */
+
+static Lisp_Object
+window_list_1 (window, minibuf, all_frames)
+ Lisp_Object window, minibuf, all_frames;
+{
+ Lisp_Object tail, list;
+
+ decode_next_window_args (&window, &minibuf, &all_frames);
+ list = Qnil;
+
+ for (tail = window_list (); CONSP (tail); tail = XCDR (tail))
+ if (candidate_window_p (XCAR (tail), window, minibuf, all_frames))
+ list = Fcons (XCAR (tail), list);
+
+ return Fnreverse (list);
+}
+
+
\f
/* Look at all windows, performing an operation specified by TYPE
with argument OBJ.
static Lisp_Object
window_loop (type, obj, mini, frames)
enum window_loop type;
- register Lisp_Object obj, frames;
+ Lisp_Object obj, frames;
int mini;
{
- register Lisp_Object w;
- register Lisp_Object best_window;
- register Lisp_Object next_window;
- register Lisp_Object last_window;
- FRAME_PTR frame;
- Lisp_Object frame_arg;
- frame_arg = Qt;
-
+ Lisp_Object window, windows, best_window, frame_arg;
+ struct frame *f;
+ struct gcpro gcpro1;
+
/* If we're only looping through windows on a particular frame,
frame points to that frame. If we're looping through windows
on all frames, frame is 0. */
if (FRAMEP (frames))
- frame = XFRAME (frames);
+ f = XFRAME (frames);
else if (NILP (frames))
- frame = selected_frame;
+ f = SELECTED_FRAME ();
else
- frame = 0;
- if (frame)
+ f = NULL;
+
+ if (f)
frame_arg = Qlambda;
else if (XFASTINT (frames) == 0)
frame_arg = frames;
else if (EQ (frames, Qvisible))
frame_arg = frames;
+ else
+ frame_arg = Qt;
/* frame_arg is Qlambda to stick to one frame,
Qvisible to consider all visible frames,
/* Pick a window to start with. */
if (WINDOWP (obj))
- w = obj;
- else if (frame)
- w = FRAME_SELECTED_WINDOW (frame);
+ window = obj;
+ else if (f)
+ window = FRAME_SELECTED_WINDOW (f);
else
- w = FRAME_SELECTED_WINDOW (selected_frame);
+ window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ());
/* Figure out the last window we're going to mess with. Since
Fnext_window, given the same options, is guaranteed to go in a
We can't just wait until we hit the first window again, because
it might be deleted. */
- last_window = Fprevious_window (w, mini ? Qt : Qnil, frame_arg);
-
+ windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg);
+ GCPRO1 (windows);
best_window = Qnil;
- for (;;)
+
+ for (; CONSP (windows); windows = CDR (windows))
{
- /* Pick the next window now, since some operations will delete
- the current window. */
- next_window = Fnext_window (w, mini ? Qt : Qnil, frame_arg);
-
- /* Note that we do not pay attention here to whether
- the frame is visible, since Fnext_window skips non-visible frames
- if that is desired, under the control of frame_arg. */
- if (! MINI_WINDOW_P (XWINDOW (w))
+ struct window *w;
+
+ window = XCAR (windows);
+ w = XWINDOW (window);
+
+ /* Note that we do not pay attention here to whether the frame
+ is visible, since Fwindow_list skips non-visible frames if
+ that is desired, under the control of frame_arg. */
+ if (!MINI_WINDOW_P (w)
/* For UNSHOW_BUFFER, we must always consider all windows. */
|| type == UNSHOW_BUFFER
|| (mini && minibuf_level > 0))
switch (type)
{
case GET_BUFFER_WINDOW:
- if (XBUFFER (XWINDOW (w)->buffer) == XBUFFER (obj)
+ if (EQ (w->buffer, obj)
/* Don't find any minibuffer window
except the one that is currently in use. */
- && (MINI_WINDOW_P (XWINDOW (w))
- ? EQ (w, minibuf_window) : 1))
- return w;
+ && (MINI_WINDOW_P (w)
+ ? EQ (window, minibuf_window)
+ : 1))
+ {
+ UNGCPRO;
+ return window;
+ }
break;
case GET_LRU_WINDOW:
/* t as arg means consider only full-width windows */
- if (!NILP (obj) && !WINDOW_FULL_WIDTH_P (XWINDOW (w)))
+ if (!NILP (obj) && !WINDOW_FULL_WIDTH_P (w))
break;
/* Ignore dedicated windows and minibuffers. */
- if (MINI_WINDOW_P (XWINDOW (w))
- || !NILP (XWINDOW (w)->dedicated))
+ if (MINI_WINDOW_P (w) || !NILP (w->dedicated))
break;
if (NILP (best_window)
|| (XFASTINT (XWINDOW (best_window)->use_time)
- > XFASTINT (XWINDOW (w)->use_time)))
- best_window = w;
+ > XFASTINT (w->use_time)))
+ best_window = window;
break;
case DELETE_OTHER_WINDOWS:
- if (XWINDOW (w) != XWINDOW (obj))
- Fdelete_window (w);
+ if (!EQ (window, obj))
+ Fdelete_window (window);
break;
case DELETE_BUFFER_WINDOWS:
- if (EQ (XWINDOW (w)->buffer, obj))
+ if (EQ (w->buffer, obj))
{
- FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w)));
+ struct frame *f = XFRAME (WINDOW_FRAME (w));
/* If this window is dedicated, and in a frame of its own,
kill the frame. */
- if (EQ (w, FRAME_ROOT_WINDOW (f))
- && !NILP (XWINDOW (w)->dedicated)
+ if (EQ (window, FRAME_ROOT_WINDOW (f))
+ && !NILP (w->dedicated)
&& other_visible_frames (f))
{
/* Skip the other windows on this frame.
There might be one, the minibuffer! */
- if (! EQ (w, last_window))
- while (f == XFRAME (WINDOW_FRAME (XWINDOW (next_window))))
- {
- /* As we go, check for the end of the loop.
- We mustn't start going around a second time. */
- if (EQ (next_window, last_window))
- {
- last_window = w;
- break;
- }
- next_window = Fnext_window (next_window,
- mini ? Qt : Qnil,
- frame_arg);
- }
+ while (CONSP (XCDR (windows))
+ && EQ (XWINDOW (XCAR (windows))->frame,
+ XWINDOW (XCAR (XCDR (windows)))->frame))
+ windows = XCDR (windows);
+
/* Now we can safely delete the frame. */
- Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil);
+ Fdelete_frame (w->frame, Qnil);
+ }
+ else if (NILP (w->parent))
+ {
+ /* If we're deleting the buffer displayed in the
+ only window on the frame, find a new buffer to
+ display there. */
+ Lisp_Object buffer;
+ buffer = Fother_buffer (obj, Qnil, w->frame);
+ if (NILP (buffer))
+ buffer = Fget_buffer_create (build_string ("*scratch*"));
+ Fset_window_buffer (window, buffer);
+ if (EQ (window, selected_window))
+ Fset_buffer (w->buffer);
}
else
- /* If we're deleting the buffer displayed in the only window
- on the frame, find a new buffer to display there. */
- if (NILP (XWINDOW (w)->parent))
- {
- Lisp_Object new_buffer;
- new_buffer = Fother_buffer (obj, Qnil,
- XWINDOW (w)->frame);
- if (NILP (new_buffer))
- new_buffer
- = Fget_buffer_create (build_string ("*scratch*"));
- Fset_window_buffer (w, new_buffer);
- if (EQ (w, selected_window))
- Fset_buffer (XWINDOW (w)->buffer);
- }
- else
- Fdelete_window (w);
+ Fdelete_window (window);
}
break;
case GET_LARGEST_WINDOW:
- /* Ignore dedicated windows and minibuffers. */
- if (MINI_WINDOW_P (XWINDOW (w))
- || !NILP (XWINDOW (w)->dedicated))
- break;
{
- struct window *best_window_ptr = XWINDOW (best_window);
- struct window *w_ptr = XWINDOW (w);
- if (NILP (best_window)
- || (XFASTINT (w_ptr->height) * XFASTINT (w_ptr->width)
- > (XFASTINT (best_window_ptr->height)
- * XFASTINT (best_window_ptr->width))))
- best_window = w;
+ /* Ignore dedicated windows and minibuffers. */
+ if (MINI_WINDOW_P (w) || !NILP (w->dedicated))
+ break;
+
+ if (NILP (best_window))
+ best_window = window;
+ else
+ {
+ struct window *b = XWINDOW (best_window);
+ if (XFASTINT (w->height) * XFASTINT (w->width)
+ > XFASTINT (b->height) * XFASTINT (b->width))
+ best_window = window;
+ }
}
break;
case UNSHOW_BUFFER:
- if (EQ (XWINDOW (w)->buffer, obj))
+ if (EQ (w->buffer, obj))
{
+ Lisp_Object buffer;
+ struct frame *f = XFRAME (w->frame);
+
/* Find another buffer to show in this window. */
- Lisp_Object another_buffer;
- FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (w)));
- another_buffer = Fother_buffer (obj, Qnil, XWINDOW (w)->frame);
- if (NILP (another_buffer))
- another_buffer
- = Fget_buffer_create (build_string ("*scratch*"));
+ buffer = Fother_buffer (obj, Qnil, w->frame);
+ if (NILP (buffer))
+ buffer = Fget_buffer_create (build_string ("*scratch*"));
+
/* If this window is dedicated, and in a frame of its own,
kill the frame. */
- if (EQ (w, FRAME_ROOT_WINDOW (f))
- && !NILP (XWINDOW (w)->dedicated)
+ if (EQ (window, FRAME_ROOT_WINDOW (f))
+ && !NILP (w->dedicated)
&& other_visible_frames (f))
{
/* Skip the other windows on this frame.
There might be one, the minibuffer! */
- if (! EQ (w, last_window))
- while (f == XFRAME (WINDOW_FRAME (XWINDOW (next_window))))
- {
- /* As we go, check for the end of the loop.
- We mustn't start going around a second time. */
- if (EQ (next_window, last_window))
- {
- last_window = w;
- break;
- }
- next_window = Fnext_window (next_window,
- mini ? Qt : Qnil,
- frame_arg);
- }
+ while (CONSP (XCDR (windows))
+ && EQ (XWINDOW (XCAR (windows))->frame,
+ XWINDOW (XCAR (XCDR (windows)))->frame))
+ windows = XCDR (windows);
+
/* Now we can safely delete the frame. */
- Fdelete_frame (WINDOW_FRAME (XWINDOW (w)), Qnil);
+ Fdelete_frame (w->frame, Qnil);
}
else
{
/* Otherwise show a different buffer in the window. */
- XWINDOW (w)->dedicated = Qnil;
- Fset_window_buffer (w, another_buffer);
- if (EQ (w, selected_window))
- Fset_buffer (XWINDOW (w)->buffer);
+ w->dedicated = Qnil;
+ Fset_window_buffer (window, buffer);
+ if (EQ (window, selected_window))
+ Fset_buffer (w->buffer);
}
}
break;
/* Check for a window that has a killed buffer. */
case CHECK_ALL_WINDOWS:
- if (! NILP (XWINDOW (w)->buffer)
- && NILP (XBUFFER (XWINDOW (w)->buffer)->name))
+ if (! NILP (w->buffer)
+ && NILP (XBUFFER (w->buffer)->name))
abort ();
- }
-
- if (EQ (w, last_window))
- break;
+ break;
- w = next_window;
+ case WINDOW_LOOP_UNUSED:
+ break;
+ }
}
+ UNGCPRO;
return best_window;
}
}
else if (BUFFERP (w->buffer))
{
- Lisp_Object val;
- struct buffer *old = current_buffer;
-
- current_buffer = XBUFFER (w->buffer);
- val = find_symbol_value (Qwindow_size_fixed);
- current_buffer = old;
-
- fixed_p = 0;
- if (!EQ (val, Qunbound))
+ if (w->height_fixed_p && !width_p)
+ fixed_p = 1;
+ else
{
- fixed_p = !NILP (val);
-
- if (fixed_p
- && ((EQ (val, Qheight) && width_p)
- || (EQ (val, Qwidth) && !width_p)))
- fixed_p = 0;
+ struct buffer *old = current_buffer;
+ Lisp_Object val;
+
+ current_buffer = XBUFFER (w->buffer);
+ val = find_symbol_value (Qwindow_size_fixed);
+ current_buffer = old;
+
+ fixed_p = 0;
+ if (!EQ (val, Qunbound))
+ {
+ fixed_p = !NILP (val);
+
+ if (fixed_p
+ && ((EQ (val, Qheight) && width_p)
+ || (EQ (val, Qwidth) && !width_p)))
+ fixed_p = 0;
+ }
}
/* Can't tell if this one is resizable without looking at
{
if (MINI_WINDOW_P (w)
|| (!WINDOW_WANTS_MODELINE_P (w)
- && !WINDOW_WANTS_TOP_LINE_P (w)))
+ && !WINDOW_WANTS_HEADER_LINE_P (w)))
size = 1;
else
size = window_min_height;
/* Return the minimum size of window W, taking fixed-size windows into
account. WIDTH_P non-zero means return the minimum width,
- otherwise return the minimum height. Set *FIXED to 1 if W is
- fixed-size unless FIXED is null. */
+ otherwise return the minimum height. IGNORE_FIXED_P non-zero means
+ ignore if W is fixed-size. Set *FIXED to 1 if W is fixed-size
+ unless FIXED is null. */
static int
-window_min_size (w, width_p, fixed)
+window_min_size (w, width_p, ignore_fixed_p, fixed)
struct window *w;
- int width_p, *fixed;
+ int width_p, ignore_fixed_p, *fixed;
{
int size, fixed_p;
- fixed_p = window_fixed_size_p (w, width_p, 1);
+ if (ignore_fixed_p)
+ fixed_p = 0;
+ else
+ fixed_p = window_fixed_size_p (w, width_p, 1);
+
if (fixed)
*fixed = fixed_p;
size = width_p ? XFASTINT (w->width) : XFASTINT (w->height);
else
size = window_min_size_1 (w, width_p);
-
+
return size;
}
int old_size, min_size;
check_min_window_sizes ();
+ size = max (0, size);
/* If the window has been "too small" at one point,
don't delete it for being "too small" in the future.
Preserve it as long as that is at all possible. */
if (width_p)
{
- old_size = XFASTINT (w->width);
+ old_size = XINT (w->width);
min_size = window_min_width;
}
else
{
- old_size = XFASTINT (w->height);
+ old_size = XINT (w->height);
min_size = window_min_height;
}
}
/* Set redisplay hints. */
- XSETFASTINT (w->last_modified, 0);
- XSETFASTINT (w->last_overlay_modified, 0);
+ w->last_modified = make_number (0);
+ w->last_overlay_modified = make_number (0);
windows_or_buffers_changed++;
- FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1;
+ FRAME_WINDOW_SIZES_CHANGED (XFRAME (w->frame)) = 1;
if (width_p)
{
sideward = &w->vchild;
forward = &w->hchild;
- XSETFASTINT (w->width, size);
+ w->width = make_number (size);
}
else
{
sideward = &w->hchild;
forward = &w->vchild;
- XSETFASTINT (w->height, size);
+ w->height = make_number (size);
}
if (!NILP (*sideward))
{
int fixed_size, each, extra, n;
int resize_fixed_p, nfixed;
- int last_pos, first_pos, nchildren;
+ int last_pos, first_pos, nchildren, total;
/* Determine the fixed-size portion of the this window, and the
number of child windows. */
- fixed_size = nchildren = nfixed = 0;
+ fixed_size = nchildren = nfixed = total = 0;
for (child = *forward; !NILP (child); child = c->next, ++nchildren)
{
+ int child_size;
+
c = XWINDOW (child);
+ child_size = width_p ? XINT (c->width) : XINT (c->height);
+ total += child_size;
+
if (window_fixed_size_p (c, width_p, 0))
{
- fixed_size += (width_p
- ? XFASTINT (c->width) : XFASTINT (c->height));
+ fixed_size += child_size;
++nfixed;
}
}
/* Compute how many lines/columns to add to each child. The
value of extra takes care of rounding errors. */
n = resize_fixed_p ? nchildren : nchildren - nfixed;
- each = (size - old_size) / n;
- extra = (size - old_size) - n * each;
+ each = (size - total) / n;
+ extra = (size - total) - n * each;
/* Compute new children heights and edge positions. */
- first_pos = width_p ? XFASTINT (w->left) : XFASTINT (w->top);
+ first_pos = width_p ? XINT (w->left) : XINT (w->top);
last_pos = first_pos;
for (child = *forward; !NILP (child); child = c->next)
{
{
int child_size;
c = XWINDOW (child);
- child_size = width_p ? XFASTINT (c->width) : XFASTINT (c->height);
+ child_size = width_p ? XINT (c->width) : XINT (c->height);
size_window (child, child_size, width_p, 0);
}
}
bzero (&w->last_cursor, sizeof w->last_cursor);
w->window_end_valid = Qnil;
XSETFASTINT (w->hscroll, 0);
+ XSETFASTINT (w->min_hscroll, 0);
set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b));
set_marker_restricted (w->start,
make_number (b->last_window_start),
}
/* Set left and right marginal area width from buffer. */
- Fset_window_margins (b->left_margin_width, b->right_margin_width,
- window);
+ Fset_window_margins (window, b->left_margin_width, b->right_margin_width);
if (run_hooks_p)
{
{
register Lisp_Object tem;
register struct window *w = decode_window (window);
- struct buffer *b;
+ XSETWINDOW (window, w);
buffer = Fget_buffer (buffer);
CHECK_BUFFER (buffer, 1);
return select_window_1 (window, 1);
}
\f
+/* Note that selected_window can be nil
+ when this is called from Fset_window_configuration. */
+
static Lisp_Object
select_window_1 (window, recordflag)
register Lisp_Object window;
int recordflag;
{
register struct window *w;
- register struct window *ow = XWINDOW (selected_window);
+ register struct window *ow;
+ struct frame *sf;
CHECK_LIVE_WINDOW (window, 0);
if (EQ (window, selected_window))
return window;
- if (! NILP (ow->buffer))
- set_marker_both (ow->pointm, ow->buffer,
- BUF_PT (XBUFFER (ow->buffer)),
- BUF_PT_BYTE (XBUFFER (ow->buffer)));
+ if (!NILP (selected_window))
+ {
+ ow = XWINDOW (selected_window);
+ if (! NILP (ow->buffer))
+ set_marker_both (ow->pointm, ow->buffer,
+ BUF_PT (XBUFFER (ow->buffer)),
+ BUF_PT_BYTE (XBUFFER (ow->buffer)));
+ }
selected_window = window;
- if (XFRAME (WINDOW_FRAME (w)) != selected_frame)
+ sf = SELECTED_FRAME ();
+ if (XFRAME (WINDOW_FRAME (w)) != sf)
{
XFRAME (WINDOW_FRAME (w))->selected_window = window;
/* Use this rather than Fhandle_switch_frame
Fselect_frame (WINDOW_FRAME (w), Qnil);
}
else
- selected_frame->selected_window = window;
+ sf->selected_window = window;
if (recordflag)
record_buffer (w->buffer);
display_buffer_1 (window)
Lisp_Object window;
{
- FRAME_PTR f = XFRAME (WINDOW_FRAME (XWINDOW (window)));
+ Lisp_Object frame = XWINDOW (window)->frame;
+ FRAME_PTR f = XFRAME (frame);
+
FRAME_SAMPLE_VISIBILITY (f);
- if (f != selected_frame)
+
+ if (!EQ (frame, selected_frame))
{
if (FRAME_ICONIFIED_P (f))
- Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window)));
+ Fmake_frame_visible (frame);
else if (FRAME_VISIBLE_P (f))
- Fraise_frame (WINDOW_FRAME (XWINDOW (window)));
+ Fraise_frame (frame);
}
+
return window;
}
argument NOT-THIS-WINDOW is non-nil (interactively, with prefix arg).\n\
If `pop-up-frames' is non-nil, make a new frame if no window shows BUFFER.\n\
Returns the window displaying BUFFER.\n\
+If `display-reuse-frames' is non-nil, and another frame is currently\n\
+displaying BUFFER, then simply raise that frame.\n\
\n\
The variables `special-display-buffer-names', `special-display-regexps',\n\
`same-window-buffer-names', and `same-window-regexps' customize how certain\n\
If FRAME is a frame, search only that frame.\n\
If FRAME is nil, search only the selected frame\n\
(actually the last nonminibuffer frame),\n\
- unless `pop-up-frames' is non-nil,\n\
- which means search visible and iconified frames.")
+ unless `pop-up-frames' or `display-buffer-reuse-frames' is non-nil,\n\
+ which means search visible and iconified frames.\n\
+\n\
+If `even-window-heights' is non-nil, window heights will be evened out\n\
+if displaying the buffer causes two vertically adjacent windows to be\n\
+displayed.")
(buffer, not_this_window, frame)
register Lisp_Object buffer, not_this_window, frame;
{
register Lisp_Object window, tem, swp;
+ struct frame *f;
swp = Qnil;
buffer = Fget_buffer (buffer);
}
}
- /* If pop_up_frames,
+ /* If the user wants pop-up-frames or display-reuse-frames, then
look for a window showing BUFFER on any visible or iconified frame.
Otherwise search only the current frame. */
if (! NILP (frame))
tem = frame;
- else if (pop_up_frames || last_nonminibuf_frame == 0)
+ else if (pop_up_frames
+ || display_buffer_reuse_frames
+ || last_nonminibuf_frame == 0)
XSETFASTINT (tem, 0);
else
XSETFRAME (tem, last_nonminibuf_frame);
+
window = Fget_buffer_window (buffer, tem);
if (!NILP (window)
&& (NILP (not_this_window) || !EQ (window, selected_window)))
- {
- return display_buffer_1 (window);
- }
+ return display_buffer_1 (window);
/* Certain buffer names get special handling. */
if (!NILP (Vspecial_display_function) && NILP (swp))
return display_buffer_1 (window);
}
+ f = SELECTED_FRAME ();
if (pop_up_windows
- || FRAME_MINIBUF_ONLY_P (selected_frame)
+ || FRAME_MINIBUF_ONLY_P (f)
/* If the current frame is a special display frame,
don't try to reuse its windows. */
- || !NILP (XWINDOW (FRAME_ROOT_WINDOW (selected_frame))->dedicated)
- )
+ || !NILP (XWINDOW (FRAME_ROOT_WINDOW (f))->dedicated))
{
Lisp_Object frames;
frames = Qnil;
- if (FRAME_MINIBUF_ONLY_P (selected_frame))
+ if (FRAME_MINIBUF_ONLY_P (f))
XSETFRAME (frames, last_nonminibuf_frame);
/* Don't try to create a window if would get an error */
if (split_height_threshold < window_min_height << 1)
/* If the frame we would try to split cannot be split,
try other frames. */
- if (FRAME_NO_SPLIT_P (NILP (frames) ? selected_frame
- : last_nonminibuf_frame))
+ if (FRAME_NO_SPLIT_P (NILP (frames) ? f : last_nonminibuf_frame))
{
/* Try visible frames first. */
window = Fget_largest_window (Qvisible);
if (!NILP (XWINDOW (window)->next))
other = lower = XWINDOW (window)->next, upper = window;
if (!NILP (other)
+ && !NILP (Veven_window_heights)
/* Check that OTHER and WINDOW are vertically arrayed. */
&& !EQ (XWINDOW (other)->top, XWINDOW (window)->top)
&& (XFASTINT (XWINDOW (other)->height)
{
int total = (XFASTINT (XWINDOW (other)->height)
+ XFASTINT (XWINDOW (window)->height));
- Lisp_Object old_selected_window;
- old_selected_window = selected_window;
-
- selected_window = upper;
- change_window_height ((total / 2
- - XFASTINT (XWINDOW (upper)->height)),
- 0);
- selected_window = old_selected_window;
+ enlarge_window (upper,
+ total / 2 - XFASTINT (XWINDOW (upper)->height),
+ 0);
}
}
}
{
window = Fdisplay_buffer (buf, Qnil, Qnil);
- if (XFRAME (XWINDOW (window)->frame) != selected_frame)
+ if (!EQ (XWINDOW (window)->frame, selected_frame))
Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window)));
Vminibuf_scroll_window = window;
w = XWINDOW (window);
XSETFASTINT (w->hscroll, 0);
+ XSETFASTINT (w->min_hscroll, 0);
set_marker_restricted_both (w->start, buf, 1, 1);
set_marker_restricted_both (w->pointm, buf, 1, 1);
register Lisp_Object arg, side;
{
CHECK_NUMBER (arg, 0);
- change_window_height (XINT (arg), !NILP (side));
+ enlarge_window (selected_window, XINT (arg), !NILP (side));
if (! NILP (Vwindow_configuration_change_hook))
call1 (Vrun_hooks, Qwindow_configuration_change_hook);
register Lisp_Object arg, side;
{
CHECK_NUMBER (arg, 0);
- change_window_height (-XINT (arg), !NILP (side));
+ enlarge_window (selected_window, -XINT (arg), !NILP (side));
if (! NILP (Vwindow_configuration_change_hook))
call1 (Vrun_hooks, Qwindow_configuration_change_hook);
#define CURBEG(w) \
- *(widthflag ? (int *) &(XWINDOW (w)->left) : (int *) &(XWINDOW (w)->top))
+ *(widthflag ? &(XWINDOW (w)->left) : &(XWINDOW (w)->top))
#define CURSIZE(w) \
- *(widthflag ? (int *) &(XWINDOW (w)->width) : (int *) &(XWINDOW (w)->height))
+ *(widthflag ? &(XWINDOW (w)->width) : &(XWINDOW (w)->height))
/* Enlarge selected_window by DELTA. WIDTHFLAG non-zero means
fullfil the size request. If they become too small in the process,
they will be deleted. */
-void
-change_window_height (delta, widthflag)
+static void
+enlarge_window (window, delta, widthflag)
+ Lisp_Object window;
int delta, widthflag;
{
- Lisp_Object parent, window, next, prev;
+ Lisp_Object parent, next, prev;
struct window *p;
- int *sizep, maximum;
+ Lisp_Object *sizep;
+ int maximum;
int (*sizefun) P_ ((Lisp_Object))
= widthflag ? window_width : window_height;
void (*setsizefun) P_ ((Lisp_Object, int, int))
check_min_window_sizes ();
/* Give up if this window cannot be resized. */
- window = selected_window;
if (window_fixed_size_p (XWINDOW (window), widthflag, 1))
error ("Window is not resizable");
{
register int maxdelta;
- maxdelta = (!NILP (parent) ? (*sizefun) (parent) - *sizep
+ maxdelta = (!NILP (parent) ? (*sizefun) (parent) - XINT (*sizep)
: !NILP (p->next) ? ((*sizefun) (p->next)
- window_min_size (XWINDOW (p->next),
- widthflag, 0))
+ widthflag, 0, 0))
: !NILP (p->prev) ? ((*sizefun) (p->prev)
- window_min_size (XWINDOW (p->prev),
- widthflag, 0))
+ widthflag, 0, 0))
/* This is a frame with only one window, a minibuffer-only
or a minibufferless frame. */
: (delta = 0));
delta = maxdelta;
}
- if (*sizep + delta < window_min_size (XWINDOW (window), widthflag, 0))
+ if (XINT (*sizep) + delta < window_min_size (XWINDOW (window), widthflag, 0, 0))
{
delete_window (window);
return;
maximum = 0;
for (next = p->next; ! NILP (next); next = XWINDOW (next)->next)
maximum += (*sizefun) (next) - window_min_size (XWINDOW (next),
- widthflag, 0);
+ widthflag, 0, 0);
for (prev = p->prev; ! NILP (prev); prev = XWINDOW (prev)->prev)
maximum += (*sizefun) (prev) - window_min_size (XWINDOW (prev),
- widthflag, 0);
+ widthflag, 0, 0);
/* If we can get it all from them, do so. */
if (delta <= maximum)
{
int this_one = ((*sizefun) (next)
- window_min_size (XWINDOW (next),
- widthflag, &fixed_p));
+ widthflag, 0, &fixed_p));
if (!fixed_p)
{
if (this_one > delta)
this_one = delta;
(*setsizefun) (next, (*sizefun) (next) - this_one, 0);
- (*setsizefun) (window, *sizep + this_one, 0);
+ (*setsizefun) (window, XINT (*sizep) + this_one, 0);
delta -= this_one;
}
{
int this_one = ((*sizefun) (prev)
- window_min_size (XWINDOW (prev),
- widthflag, &fixed_p));
+ widthflag, 0, &fixed_p));
if (!fixed_p)
{
if (this_one > delta)
first_affected = prev;
(*setsizefun) (prev, (*sizefun) (prev) - this_one, 0);
- (*setsizefun) (window, *sizep + this_one, 0);
+ (*setsizefun) (window, XINT (*sizep) + this_one, 0);
delta -= this_one;
}
for (next = XWINDOW (prev)->next; ! EQ (next, first_unaffected);
prev = next, next = XWINDOW (next)->next)
{
- CURBEG (next) = CURBEG (prev) + (*sizefun) (prev);
+ XSETINT (CURBEG (next), XINT (CURBEG (prev)) + (*sizefun) (prev));
/* This does not change size of NEXT,
but it propagates the new top edge to its children */
(*setsizefun) (next, (*sizefun) (next), 0);
}
}
- else
- {
- register int delta1;
- register int opht = (*sizefun) (parent);
+ else
+ {
+ register int delta1;
+ register int opht = (*sizefun) (parent);
+
+ /* If trying to grow this window to or beyond size of the parent,
+ make delta1 so big that, on shrinking back down,
+ all the siblings end up with less than one line and are deleted. */
+ if (opht <= XINT (*sizep) + delta)
+ delta1 = opht * opht * 2;
+ else
+ {
+ /* Otherwise, make delta1 just right so that if we add
+ delta1 lines to this window and to the parent, and then
+ shrink the parent back to its original size, the new
+ proportional size of this window will increase by delta.
+
+ The function size_window will compute the new height h'
+ of the window from delta1 as:
+
+ e = delta1/n
+ x = delta1 - delta1/n * n for the 1st resizable child
+ h' = h + e + x
+
+ where n is the number of children that can be resized.
+ We can ignore x by choosing a delta1 that is a multiple of
+ n. We want the height of this window to come out as
+
+ h' = h + delta
+
+ So, delta1 must be
+
+ h + e = h + delta
+ delta1/n = delta
+ delta1 = n * delta.
+
+ The number of children n rquals the number of resizable
+ children of this window + 1 because we know window itself
+ is resizable (otherwise we would have signalled an error. */
+
+ struct window *w = XWINDOW (window);
+ Lisp_Object s;
+ int n = 1;
+
+ for (s = w->next; !NILP (s); s = XWINDOW (s)->next)
+ if (!window_fixed_size_p (XWINDOW (s), widthflag, 0))
+ ++n;
+ for (s = w->prev; !NILP (s); s = XWINDOW (s)->prev)
+ if (!window_fixed_size_p (XWINDOW (s), widthflag, 0))
+ ++n;
+
+ delta1 = n * delta;
+ }
+
+ /* Add delta1 lines or columns to this window, and to the parent,
+ keeping things consistent while not affecting siblings. */
+ XSETINT (CURSIZE (parent), opht + delta1);
+ (*setsizefun) (window, XINT (*sizep) + delta1, 0);
+
+ /* Squeeze out delta1 lines or columns from our parent,
+ shriking this window and siblings proportionately.
+ This brings parent back to correct size.
+ Delta1 was calculated so this makes this window the desired size,
+ taking it all out of the siblings. */
+ (*setsizefun) (parent, opht, 0);
+ }
+
+ XSETFASTINT (p->last_modified, 0);
+ XSETFASTINT (p->last_overlay_modified, 0);
+
+ /* Adjust glyph matrices. */
+ adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window))));
+}
+
+#undef CURBEG
+#undef CURSIZE
+
+
+\f
+/***********************************************************************
+ Resizing Mini-Windows
+ ***********************************************************************/
+
+static void shrink_window_lowest_first P_ ((struct window *, int));
+
+enum save_restore_action
+{
+ CHECK_ORIG_SIZES,
+ SAVE_ORIG_SIZES,
+ RESTORE_ORIG_SIZES
+};
+
+static int save_restore_orig_size P_ ((struct window *,
+ enum save_restore_action));
+
+/* Shrink windows rooted in window W to HEIGHT. Take the space needed
+ from lowest windows first. */
+
+static void
+shrink_window_lowest_first (w, height)
+ struct window *w;
+ int height;
+{
+ struct window *c;
+ Lisp_Object child;
+ int old_height;
+
+ xassert (!MINI_WINDOW_P (w));
+
+ /* Set redisplay hints. */
+ XSETFASTINT (w->last_modified, 0);
+ XSETFASTINT (w->last_overlay_modified, 0);
+ windows_or_buffers_changed++;
+ FRAME_WINDOW_SIZES_CHANGED (XFRAME (WINDOW_FRAME (w))) = 1;
+
+ old_height = XFASTINT (w->height);
+ XSETFASTINT (w->height, height);
+
+ if (!NILP (w->hchild))
+ {
+ for (child = w->hchild; !NILP (child); child = c->next)
+ {
+ c = XWINDOW (child);
+ c->top = w->top;
+ shrink_window_lowest_first (c, height);
+ }
+ }
+ else if (!NILP (w->vchild))
+ {
+ Lisp_Object last_child;
+ int delta = old_height - height;
+ int last_top;
+
+ last_child = Qnil;
+
+ /* Find the last child. We are taking space from lowest windows
+ first, so we iterate over children from the last child
+ backwards. */
+ for (child = w->vchild; !NILP (child); child = XWINDOW (child)->next)
+ last_child = child;
+
+ /* Assign new heights. We leave only MIN_SAFE_WINDOW_HEIGHT. */
+ for (child = last_child; delta && !NILP (child); child = c->prev)
+ {
+ int this_one;
+
+ c = XWINDOW (child);
+ this_one = XFASTINT (c->height) - MIN_SAFE_WINDOW_HEIGHT;
+
+ if (this_one > delta)
+ this_one = delta;
+
+ shrink_window_lowest_first (c, XFASTINT (c->height) - this_one);
+ delta -= this_one;
+ }
+
+ /* Compute new positions. */
+ last_top = XINT (w->top);
+ for (child = w->vchild; !NILP (child); child = c->next)
+ {
+ c = XWINDOW (child);
+ c->top = make_number (last_top);
+ shrink_window_lowest_first (c, XFASTINT (c->height));
+ last_top += XFASTINT (c->height);
+ }
+ }
+}
- /* If trying to grow this window to or beyond size of the parent,
- make delta1 so big that, on shrinking back down,
- all the siblings end up with less than one line and are deleted. */
- if (opht <= *sizep + delta)
- delta1 = opht * opht * 2;
- else
- {
- /* Otherwise, make delta1 just right so that if we add
- delta1 lines to this window and to the parent, and then
- shrink the parent back to its original size, the new
- proportional size of this window will increase by delta.
- The function size_window will compute the new height h'
- of the window from delta1 as:
-
- e = delta1/n
- x = delta1 - delta1/n * n for the 1st resizable child
- h' = h + e + x
+/* Save, restore, or check positions and sizes in the window tree
+ rooted at W. ACTION says what to do.
- where n is the number of children that can be resized.
- We can ignore x by choosing a delta1 that is a multiple of
- n. We want the height of this window to come out as
-
- h' = h + delta
+ If ACTION is CHECK_ORIG_SIZES, check if orig_top and orig_height
+ members are valid for all windows in the window tree. Value is
+ non-zero if they are valid.
+
+ If ACTION is SAVE_ORIG_SIZES, save members top and height in
+ orig_top and orig_height for all windows in the tree.
- So, delta1 must be
-
- h + e = h + delta
- delta1/n = delta
- delta1 = n * delta.
+ If ACTION is RESTORE_ORIG_SIZES, restore top and height from
+ values stored in orig_top and orig_height for all windows. */
- The number of children n rquals the number of resizable
- children of this window + 1 because we know window itself
- is resizable (otherwise we would have signalled an error. */
+static int
+save_restore_orig_size (w, action)
+ struct window *w;
+ enum save_restore_action action;
+{
+ int success_p = 1;
- struct window *w = XWINDOW (window);
- Lisp_Object s;
- int n = 1;
+ while (w)
+ {
+ if (!NILP (w->hchild))
+ {
+ if (!save_restore_orig_size (XWINDOW (w->hchild), action))
+ success_p = 0;
+ }
+ else if (!NILP (w->vchild))
+ {
+ if (!save_restore_orig_size (XWINDOW (w->vchild), action))
+ success_p = 0;
+ }
+
+ switch (action)
+ {
+ case CHECK_ORIG_SIZES:
+ if (!INTEGERP (w->orig_top) || !INTEGERP (w->orig_height))
+ return 0;
+ break;
- for (s = w->next; !NILP (s); s = XWINDOW (s)->next)
- if (!window_fixed_size_p (XWINDOW (s), widthflag, 0))
- ++n;
- for (s = w->prev; !NILP (s); s = XWINDOW (s)->prev)
- if (!window_fixed_size_p (XWINDOW (s), widthflag, 0))
- ++n;
+ case SAVE_ORIG_SIZES:
+ w->orig_top = w->top;
+ w->orig_height = w->height;
+ XSETFASTINT (w->last_modified, 0);
+ XSETFASTINT (w->last_overlay_modified, 0);
+ break;
- delta1 = n * delta;
+ case RESTORE_ORIG_SIZES:
+ xassert (INTEGERP (w->orig_top) && INTEGERP (w->orig_height));
+ w->top = w->orig_top;
+ w->height = w->orig_height;
+ w->orig_height = w->orig_top = Qnil;
+ XSETFASTINT (w->last_modified, 0);
+ XSETFASTINT (w->last_overlay_modified, 0);
+ break;
+
+ default:
+ abort ();
}
- /* Add delta1 lines or columns to this window, and to the parent,
- keeping things consistent while not affecting siblings. */
- CURSIZE (parent) = opht + delta1;
- (*setsizefun) (window, *sizep + delta1, 0);
+ w = NILP (w->next) ? NULL : XWINDOW (w->next);
+ }
- /* Squeeze out delta1 lines or columns from our parent,
- shriking this window and siblings proportionately.
- This brings parent back to correct size.
- Delta1 was calculated so this makes this window the desired size,
- taking it all out of the siblings. */
- (*setsizefun) (parent, opht, 0);
+ return success_p;
+}
+
+
+/* Grow mini-window W by DELTA lines, DELTA >= 0, or as much as we can
+ without deleting other windows. */
+
+void
+grow_mini_window (w, delta)
+ struct window *w;
+ int delta;
+{
+ struct frame *f = XFRAME (w->frame);
+ struct window *root;
+
+ xassert (MINI_WINDOW_P (w));
+ xassert (delta >= 0);
+
+ /* Check values of window_min_width and window_min_height for
+ validity. */
+ check_min_window_sizes ();
+
+ /* Compute how much we can enlarge the mini-window without deleting
+ other windows. */
+ root = XWINDOW (FRAME_ROOT_WINDOW (f));
+ if (delta)
+ {
+ int min_height = window_min_size (root, 0, 0, 0);
+ if (XFASTINT (root->height) - delta < min_height)
+ delta = XFASTINT (root->height) - min_height;
}
+
+ if (delta)
+ {
+ /* Save original window sizes and positions, if not already done. */
+ if (!save_restore_orig_size (root, CHECK_ORIG_SIZES))
+ save_restore_orig_size (root, SAVE_ORIG_SIZES);
- XSETFASTINT (p->last_modified, 0);
- XSETFASTINT (p->last_overlay_modified, 0);
+ /* Shrink other windows. */
+ shrink_window_lowest_first (root, XFASTINT (root->height) - delta);
- /* Adjust glyph matrices. */
- adjust_glyphs (XFRAME (WINDOW_FRAME (XWINDOW (window))));
+ /* Grow the mini-window. */
+ w->top = make_number (XFASTINT (root->top) + XFASTINT (root->height));
+ w->height = make_number (XFASTINT (w->height) + delta);
+ XSETFASTINT (w->last_modified, 0);
+ XSETFASTINT (w->last_overlay_modified, 0);
+
+ adjust_glyphs (f);
+ }
}
-#undef CURBEG
-#undef CURSIZE
+
+/* Shrink mini-window W. If there is recorded info about window sizes
+ before a call to grow_mini_window, restore recorded window sizes.
+ Otherwise, if the mini-window is higher than 1 line, resize it to 1
+ line. */
+
+void
+shrink_mini_window (w)
+ struct window *w;
+{
+ struct frame *f = XFRAME (w->frame);
+ struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f));
+
+ if (save_restore_orig_size (root, CHECK_ORIG_SIZES))
+ {
+ save_restore_orig_size (root, RESTORE_ORIG_SIZES);
+ adjust_glyphs (f);
+ FRAME_WINDOW_SIZES_CHANGED (f) = 1;
+ windows_or_buffers_changed = 1;
+ }
+ else if (XFASTINT (w->height) > 1)
+ {
+ Lisp_Object window;
+ XSETWINDOW (window, w);
+ enlarge_window (window, 1 - XFASTINT (w->height), 0);
+ }
+}
+\f
/* Mark window cursors off for all windows in the window tree rooted
at W by setting their phys_cursor_on_p flag to zero. Called from
xterm.c, e.g. when a frame is cleared and thereby all cursors on
Lisp_Object tem;
int this_scroll_margin;
int preserve_y;
+ /* True if we fiddled the window vscroll field without really scrolling. */
+ int vscrolled = 0;
SET_TEXT_POS_FROM_MARKER (start, w->start);
/* If PT is not visible in WINDOW, move back one half of
the screen. */
- XSETFASTINT (tem, PT);
- tem = Fpos_visible_in_window_p (tem, window);
+ tem = Fpos_visible_in_window_p (make_number (PT), window, Qnil);
if (NILP (tem))
{
/* Move backward half the height of the window. Performance note:
int screen_full = (it.last_visible_y
- next_screen_context_lines * CANON_Y_UNIT (it.f));
int direction = n < 0 ? -1 : 1;
- move_it_vertically (&it, direction * screen_full);
+ int dy = direction * screen_full;
+
+ /* Note that move_it_vertically always moves the iterator to the
+ start of a line. So, if the last line doesn't have a newline,
+ we would end up at the start of the line ending at ZV. */
+ if (dy <= 0)
+ move_it_vertically_backward (&it, -dy);
+ else if (dy > 0)
+ move_it_to (&it, ZV, -1, it.current_y + dy, -1,
+ MOVE_TO_POS | MOVE_TO_Y);
}
else
move_it_by_lines (&it, n, 1);
if ((n > 0 && IT_CHARPOS (it) == ZV)
|| (n < 0 && IT_CHARPOS (it) == CHARPOS (start)))
{
- if (noerror)
- return;
- else if (IT_CHARPOS (it) == ZV)
- Fsignal (Qend_of_buffer, Qnil);
+ if (IT_CHARPOS (it) == ZV)
+ {
+ if (it.current_y + it.max_ascent + it.max_descent
+ > it.last_visible_y)
+ /* The last line was only partially visible, make it fully
+ visible. */
+ w->vscroll = (it.last_visible_y
+ - it.current_y + it.max_ascent + it.max_descent);
+ else if (noerror)
+ return;
+ else
+ Fsignal (Qend_of_buffer, Qnil);
+ }
else
- Fsignal (Qbeginning_of_buffer, Qnil);
+ {
+ if (w->vscroll != 0)
+ /* The first line was only partially visible, make it fully
+ visible. */
+ w->vscroll = 0;
+ else if (noerror)
+ return;
+ else
+ Fsignal (Qbeginning_of_buffer, Qnil);
+ }
+
+ /* If control gets here, then we vscrolled. */
+
+ XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1;
+
+ /* Don't try to change the window start below. */
+ vscrolled = 1;
}
- /* Set the window start, and set up the window for redisplay. */
- set_marker_restricted (w->start, make_number (IT_CHARPOS (it)), w->buffer);
- w->start_at_line_beg = Fbolp ();
- w->update_mode_line = Qt;
- XSETFASTINT (w->last_modified, 0);
- XSETFASTINT (w->last_overlay_modified, 0);
- /* Set force_start so that redisplay_window will run the
- window-scroll-functions. */
- w->force_start = Qt;
+ if (! vscrolled)
+ {
+ /* Set the window start, and set up the window for redisplay. */
+ set_marker_restricted (w->start, make_number (IT_CHARPOS (it)),
+ w->buffer);
+ w->start_at_line_beg = Fbolp ();
+ w->update_mode_line = Qt;
+ XSETFASTINT (w->last_modified, 0);
+ XSETFASTINT (w->last_overlay_modified, 0);
+ /* Set force_start so that redisplay_window will run the
+ window-scroll-functions. */
+ w->force_start = Qt;
+ }
it.current_y = it.vpos = 0;
}
else if (n < 0)
{
+ int charpos, bytepos;
+
/* We moved the window start towards BEGV, so PT may be now
in the scroll margin at the bottom. */
move_it_to (&it, PT, -1,
it.last_visible_y - this_scroll_margin - 1, -1,
MOVE_TO_POS | MOVE_TO_Y);
+
+ /* Save our position, in case it's correct. */
+ charpos = IT_CHARPOS (it);
+ bytepos = IT_BYTEPOS (it);
- /* Don't put point on a partially visible line at the end. */
- if (it.current_y + it.max_ascent + it.max_descent
- > it.last_visible_y)
- move_it_by_lines (&it, -1, 0);
-
- SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it));
+ /* See if point is on a partially visible line at the end. */
+ move_it_by_lines (&it, 1, 1);
+ if (it.current_y > it.last_visible_y)
+ /* The last line was only partially visible, so back up two
+ lines to make sure we're on a fully visible line. */
+ {
+ move_it_by_lines (&it, -2, 0);
+ SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it));
+ }
+ else
+ /* No, the position we saved is OK, so use it. */
+ SET_PT_BOTH (charpos, bytepos);
}
}
}
original_vpos = posit.vpos;
XSETFASTINT (tem, PT);
- tem = Fpos_visible_in_window_p (tem, window);
+ tem = Fpos_visible_in_window_p (tem, window, Qnil);
if (NILP (tem))
{
if (NILP (arg))
{
extern int frame_garbaged;
+ int i;
+
+ /* Invalidate pixel data calculated for all compositions. */
+ for (i = 0; i < n_compositions; i++)
+ composition_table[i]->font = NULL;
Fredraw_frame (w->frame);
SET_FRAME_GARBAGED (XFRAME (WINDOW_FRAME (w)));
return Qnil;
}
+
+
+/* Value is the number of lines actually displayed in window W,
+ as opposed to its height. */
+
+static int
+displayed_window_lines (w)
+ struct window *w;
+{
+ struct it it;
+ struct text_pos start;
+ int height = window_box_height (w);
+ struct buffer *old_buffer;
+ int bottom_y;
+
+ if (XBUFFER (w->buffer) != current_buffer)
+ {
+ old_buffer = current_buffer;
+ set_buffer_internal (XBUFFER (w->buffer));
+ }
+ else
+ old_buffer = NULL;
+
+ SET_TEXT_POS_FROM_MARKER (start, w->start);
+ start_display (&it, w, start);
+ move_it_vertically (&it, height);
+
+ if (old_buffer)
+ set_buffer_internal (old_buffer);
+
+ bottom_y = it.current_y + it.max_ascent + it.max_descent;
+
+ if (bottom_y > it.current_y && bottom_y <= it.last_visible_y)
+ /* Hit a line without a terminating newline. */
+ it.vpos++;
+
+ /* Add in empty lines at the bottom of the window. */
+ if (bottom_y < height)
+ {
+ struct frame *f = XFRAME (w->frame);
+ int rest = height - bottom_y;
+ int lines = rest / CANON_Y_UNIT (f);
+ it.vpos += lines;
+ }
+
+ return it.vpos;
+}
+
+
+DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height,
+ 0, 1, 0,
+ "Return the height in lines of the text display area of WINDOW.\n\
+This doesn't include the mode-line (or header-line if any) or any\n\
+partial-height lines in the text display area.")
+ (window)
+ Lisp_Object window;
+{
+ struct window *w = decode_window (window);
+ int pixel_height = window_box_height (w);
+ int line_height = pixel_height / CANON_Y_UNIT (XFRAME (w->frame));
+ return make_number (line_height);
+}
+
+
\f
DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line,
1, 1, "P",
An argument specifies vertical position within the window;\n\
zero means top of window, negative means relative to bottom of window.")
(arg)
- register Lisp_Object arg;
+ Lisp_Object arg;
{
- register struct window *w = XWINDOW (selected_window);
- register int height = window_internal_height (w);
- register int start;
+ struct window *w = XWINDOW (selected_window);
+ int lines, start;
Lisp_Object window;
- if (NILP (arg))
- XSETFASTINT (arg, height / 2);
- else
- {
- arg = Fprefix_numeric_value (arg);
- if (XINT (arg) < 0)
- XSETINT (arg, XINT (arg) + height);
- }
-
+ window = selected_window;
start = marker_position (w->start);
- XSETWINDOW (window, w);
if (start < BEGV || start > ZV)
{
+ int height = window_internal_height (w);
Fvertical_motion (make_number (- (height / 2)), window);
set_marker_both (w->start, w->buffer, PT, PT_BYTE);
w->start_at_line_beg = Fbolp ();
else
Fgoto_char (w->start);
+ lines = displayed_window_lines (w);
+ if (NILP (arg))
+ XSETFASTINT (arg, lines / 2);
+ else
+ {
+ arg = Fprefix_numeric_value (arg);
+ if (XINT (arg) < 0)
+ XSETINT (arg, XINT (arg) + lines);
+ }
+
+ if (w->vscroll)
+ /* Skip past a partially visible first line. */
+ XSETINT (arg, XINT (arg) + 1);
+
return Fvertical_motion (arg, window);
}
EMACS_INT size_from_Lisp_Vector_struct;
struct Lisp_Vector *next_from_Lisp_Vector_struct;
Lisp_Object frame_width, frame_height, frame_menu_bar_lines;
- Lisp_Object frame_toolbar_lines;
+ Lisp_Object frame_tool_bar_lines;
Lisp_Object selected_frame;
Lisp_Object current_window;
Lisp_Object current_buffer;
/* This is saved as a Lisp_Vector */
struct saved_window
- {
- /* these first two must agree with struct Lisp_Vector in lisp.h */
- EMACS_INT size_from_Lisp_Vector_struct;
- struct Lisp_Vector *next_from_Lisp_Vector_struct;
+{
+ /* these first two must agree with struct Lisp_Vector in lisp.h */
+ EMACS_INT size_from_Lisp_Vector_struct;
+ struct Lisp_Vector *next_from_Lisp_Vector_struct;
- Lisp_Object window;
- Lisp_Object buffer, start, pointm, mark;
- Lisp_Object left, top, width, height, hscroll;
- Lisp_Object parent, prev;
- Lisp_Object start_at_line_beg;
- Lisp_Object display_table;
- };
-#define SAVED_WINDOW_VECTOR_SIZE 14 /* Arg to Fmake_vector */
+ Lisp_Object window;
+ Lisp_Object buffer, start, pointm, mark;
+ Lisp_Object left, top, width, height, hscroll, min_hscroll;
+ Lisp_Object parent, prev;
+ Lisp_Object start_at_line_beg;
+ Lisp_Object display_table;
+ Lisp_Object orig_top, orig_height;
+};
+
+#define SAVED_WINDOW_VECTOR_SIZE 17 /* Arg to Fmake_vector */
#define SAVED_WINDOW_N(swv,n) \
((struct saved_window *) (XVECTOR ((swv)->contents[(n)])))
{
if (XBUFFER (new_current_buffer) == current_buffer)
old_point = PT;
-
}
frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame;
f = XFRAME (frame);
-
+
/* If f is a dead frame, don't bother rebuilding its window tree.
However, there is other stuff we should still try to do below. */
if (FRAME_LIVE_P (f))
struct window *root_window;
struct window **leaf_windows;
int n_leaf_windows;
- int k, i;
+ int k, i, n;
/* If the frame has been resized since this window configuration was
made, we change the frame to the size specified in the
int previous_frame_height = FRAME_HEIGHT (f);
int previous_frame_width = FRAME_WIDTH (f);
int previous_frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f);
- int previous_frame_toolbar_lines = FRAME_TOOLBAR_LINES (f);
+ int previous_frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f);
/* The mouse highlighting code could get screwed up
if it runs during this. */
!= previous_frame_menu_bar_lines)
x_set_menu_bar_lines (f, data->frame_menu_bar_lines, make_number (0));
#ifdef HAVE_WINDOW_SYSTEM
- if (XFASTINT (data->frame_toolbar_lines)
- != previous_frame_toolbar_lines)
- x_set_toolbar_lines (f, data->frame_toolbar_lines, make_number (0));
+ if (XFASTINT (data->frame_tool_bar_lines)
+ != previous_frame_tool_bar_lines)
+ x_set_tool_bar_lines (f, data->frame_tool_bar_lines, make_number (0));
#endif
#endif
+ /* "Swap out" point from the selected window
+ into its buffer. We do this now, before
+ restoring the window contents, and prevent it from
+ being done later on when we select a new window. */
if (! NILP (XWINDOW (selected_window)->buffer))
{
w = XWINDOW (selected_window);
w->width = p->width;
w->height = p->height;
w->hscroll = p->hscroll;
+ w->min_hscroll = p->min_hscroll;
w->display_table = p->display_table;
+ w->orig_top = p->orig_top;
+ w->orig_height = p->orig_height;
XSETFASTINT (w->last_modified, 0);
XSETFASTINT (w->last_overlay_modified, 0);
}
FRAME_ROOT_WINDOW (f) = data->root_window;
+ /* Prevent "swapping out point" in the old selected window
+ using the buffer that has been restored into it.
+ That swapping out has already been done,
+ near the beginning of this function. */
+ selected_window = Qnil;
Fselect_window (data->current_window);
XBUFFER (XWINDOW (selected_window)->buffer)->last_selected_window
= selected_window;
x_set_menu_bar_lines (f, make_number (previous_frame_menu_bar_lines),
make_number (0));
#ifdef HAVE_WINDOW_SYSTEM
- if (previous_frame_toolbar_lines != FRAME_TOOLBAR_LINES (f))
- x_set_toolbar_lines (f, make_number (previous_frame_toolbar_lines),
- make_number (0));
+ if (previous_frame_tool_bar_lines != FRAME_TOOL_BAR_LINES (f))
+ x_set_tool_bar_lines (f, make_number (previous_frame_tool_bar_lines),
+ make_number (0));
#endif
#endif
/* Now, free glyph matrices in windows that were not reused. */
- for (i = 0; i < n_leaf_windows; ++i)
- if (NILP (leaf_windows[i]->buffer))
- {
- /* Assert it's not reused as a combination. */
- xassert (NILP (leaf_windows[i]->hchild)
- && NILP (leaf_windows[i]->vchild));
- free_window_matrices (leaf_windows[i]);
- SET_FRAME_GARBAGED (f);
- }
+ for (i = n = 0; i < n_leaf_windows; ++i)
+ {
+ if (NILP (leaf_windows[i]->buffer))
+ {
+ /* Assert it's not reused as a combination. */
+ xassert (NILP (leaf_windows[i]->hchild)
+ && NILP (leaf_windows[i]->vchild));
+ free_window_matrices (leaf_windows[i]);
+ SET_FRAME_GARBAGED (f);
+ }
+ else if (EQ (leaf_windows[i]->buffer, new_current_buffer))
+ ++n;
+ }
+
+ /* If more than one window shows the new and old current buffer,
+ don't try to preserve point in that buffer. */
+ if (old_point > 0 && n > 1)
+ old_point = -1;
adjust_glyphs (f);
w->buffer = Qnil;
w->vchild = Qnil;
w->hchild = Qnil;
+
+ Vwindow_list = Qnil;
}
\f
static int
p->width = w->width;
p->height = w->height;
p->hscroll = w->hscroll;
+ p->min_hscroll = w->min_hscroll;
p->display_table = w->display_table;
+ p->orig_top = w->orig_top;
+ p->orig_height = w->orig_height;
if (!NILP (w->buffer))
{
/* Save w's value of point in the window configuration.
FRAME_PTR f;
if (NILP (frame))
- f = selected_frame;
- else
- {
- CHECK_LIVE_FRAME (frame, 0);
- f = XFRAME (frame);
- }
+ frame = selected_frame;
+ CHECK_LIVE_FRAME (frame, 0);
+ f = XFRAME (frame);
n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f)));
vec = allocate_vectorlike (VECSIZE (struct save_window_data));
XSETFASTINT (data->frame_width, FRAME_WIDTH (f));
XSETFASTINT (data->frame_height, FRAME_HEIGHT (f));
XSETFASTINT (data->frame_menu_bar_lines, FRAME_MENU_BAR_LINES (f));
- XSETFASTINT (data->frame_toolbar_lines, FRAME_TOOLBAR_LINES (f));
- XSETFRAME (data->selected_frame, selected_frame);
+ XSETFASTINT (data->frame_tool_bar_lines, FRAME_TOOL_BAR_LINES (f));
+ data->selected_frame = selected_frame;
data->current_window = FRAME_SELECTED_WINDOW (f);
XSETBUFFER (data->current_buffer, current_buffer);
data->minibuf_scroll_window = Vminibuf_scroll_window;
for (i = 0; i < n_windows; i++)
XVECTOR (tem)->contents[i]
= Fmake_vector (make_number (SAVED_WINDOW_VECTOR_SIZE), Qnil);
- save_window_save (FRAME_ROOT_WINDOW (f),
- XVECTOR (tem), 0);
+ save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0);
XSETWINDOW_CONFIGURATION (tem, data);
return (tem);
}
"Execute body, preserving window sizes and contents.\n\
Restore which buffer appears in which window, where display starts,\n\
and the value of point and mark for each window.\n\
+Also restore the choice of selected window.\n\
Also restore which buffer is current.\n\
-But do not preserve point in the current buffer.\n\
Does not restore the value of point in current buffer.")
(args)
Lisp_Object args;
***********************************************************************/
DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins,
- 2, 3, "",
+ 2, 3, 0,
"Set width of marginal areas of window WINDOW.\n\
-If window is nil or omitted, set margins of the currently selected window.\n\
+If window is nil, set margins of the currently selected window.\n\
First parameter LEFT-WIDTH specifies the number of character\n\
cells to reserve for the left marginal area. Second parameter\n\
RIGHT-WIDTH does the same for the right marginal area.\n\
A nil width parameter means no margin.")
- (left, right, window)
+ (window, left, right)
Lisp_Object window, left, right;
{
struct window *w = decode_window (window);
- struct frame *f = XFRAME (w->frame);
if (!NILP (left))
- CHECK_NUMBER_OR_FLOAT (left, 0);
+ CHECK_NUMBER_OR_FLOAT (left, 1);
if (!NILP (right))
- CHECK_NUMBER_OR_FLOAT (right, 0);
+ CHECK_NUMBER_OR_FLOAT (right, 2);
/* Check widths < 0 and translate a zero width to nil.
Margins that are too wide have to be checked elsewhere. */
if ((INTEGERP (left) && XINT (left) < 0)
- || (FLOATP (left) && XFLOAT (left)->data <= 0))
+ || (FLOATP (left) && XFLOAT_DATA (left) <= 0))
XSETFASTINT (left, 0);
if (INTEGERP (left) && XFASTINT (left) == 0)
left = Qnil;
if ((INTEGERP (right) && XINT (right) < 0)
- || (FLOATP (right) && XFLOAT (right)->data <= 0))
+ || (FLOATP (right) && XFLOAT_DATA (right) <= 0))
XSETFASTINT (right, 0);
if (INTEGERP (right) && XFASTINT (right) == 0)
right = Qnil;
(window)
Lisp_Object window;
{
+ Lisp_Object result;
struct frame *f;
struct window *w;
if (NILP (window))
window = selected_window;
+ else
+ CHECK_WINDOW (window, 0);
w = XWINDOW (window);
f = XFRAME (w->frame);
if (FRAME_WINDOW_P (f))
- return CANON_Y_FROM_PIXEL_Y (f, w->vscroll);
+ result = CANON_Y_FROM_PIXEL_Y (f, -w->vscroll);
else
- return make_number (0);
+ result = make_number (0);
+ return result;
}
DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll,
- 1, 2, 0,
- "Set amount by WINDOW should be scrolled vertically to VSCROLL.\n\
+ 2, 2, 0,
+ "Set amount by which WINDOW should be scrolled vertically to VSCROLL.\n\
WINDOW nil or omitted means use the selected window. VSCROLL is a\n\
-multiple of the canonical character height of WINDOW.")
- (vscroll, window)
- Lisp_Object vscroll, window;
+non-negative multiple of the canonical character height of WINDOW.")
+ (window, vscroll)
+ Lisp_Object window, vscroll;
{
struct window *w;
struct frame *f;
- CHECK_NUMBER_OR_FLOAT (vscroll, 0);
-
if (NILP (window))
window = selected_window;
+ else
+ CHECK_WINDOW (window, 0);
+ CHECK_NUMBER_OR_FLOAT (vscroll, 1);
+
w = XWINDOW (window);
f = XFRAME (w->frame);
if (FRAME_WINDOW_P (f))
{
int old_dy = w->vscroll;
- w->vscroll = min (0, CANON_Y_UNIT (f) * XFLOATINT (vscroll));
+
+ w->vscroll = - CANON_Y_UNIT (f) * XFLOATINT (vscroll);
+ w->vscroll = min (w->vscroll, 0);
/* Adjust glyph matrix of the frame if the virtual display
area becomes larger than before. */
XBUFFER (w->buffer)->prevent_redisplay_optimizations_p = 1;
}
- return Qnil;
+ return Fwindow_vscroll (window);
}
\f
/* Call FN for all leaf windows on frame F. FN is called with the
first argument being a pointer to the leaf window, and with
- additional arguments A1..A4. */
+ additional argument USER_DATA. Stops when FN returns 0. */
void
-foreach_window (f, fn, a1, a2, a3, a4)
+foreach_window (f, fn, user_data)
struct frame *f;
- void (* fn) ();
- int a1, a2, a3, a4;
+ int (* fn) P_ ((struct window *, void *));
+ void *user_data;
{
- foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, a1, a2, a3, a4);
+ foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data);
}
/* Helper function for foreach_window. Call FN for all leaf windows
reachable from W. FN is called with the first argument being a
- pointer to the leaf window, and with additional arguments A1..A4. */
+ pointer to the leaf window, and with additional argument USER_DATA.
+ Stop when FN returns 0. Value is 0 if stopped by FN. */
-static void
-foreach_window_1 (w, fn, a1, a2, a3, a4)
+static int
+foreach_window_1 (w, fn, user_data)
struct window *w;
- void (* fn) ();
- int a1, a2, a3, a4;
+ int (* fn) P_ ((struct window *, void *));
+ void *user_data;
{
- while (w)
+ int cont;
+
+ for (cont = 1; w && cont;)
{
if (!NILP (w->hchild))
- foreach_window_1 (XWINDOW (w->hchild), fn, a1, a2, a3, a4);
+ cont = foreach_window_1 (XWINDOW (w->hchild), fn, user_data);
else if (!NILP (w->vchild))
- foreach_window_1 (XWINDOW (w->vchild), fn, a1, a2, a3, a4);
- else
- fn (w, a1, a2, a3, a4);
+ cont = foreach_window_1 (XWINDOW (w->vchild), fn, user_data);
+ else
+ cont = fn (w, user_data);
w = NILP (w->next) ? 0 : XWINDOW (w->next);
}
+
+ return cont;
}
/* Freeze or unfreeze the window start of W if unless it is a
- mini-window or the selected window. FREEZE_P non-zero means freeze
+ mini-window or the selected window. FREEZE_P non-null means freeze
the window start. */
-static void
+static int
freeze_window_start (w, freeze_p)
struct window *w;
- int freeze_p;
+ void *freeze_p;
{
if (w == XWINDOW (selected_window)
|| MINI_WINDOW_P (w)
|| (MINI_WINDOW_P (XWINDOW (selected_window))
+ && ! NILP (Vminibuf_scroll_window)
&& w == XWINDOW (Vminibuf_scroll_window)))
- freeze_p = 0;
+ freeze_p = NULL;
- w->frozen_window_start_p = freeze_p;
+ w->frozen_window_start_p = freeze_p != NULL;
+ return 1;
}
struct frame *f;
int freeze_p;
{
- foreach_window (f, freeze_window_start, freeze_p);
+ foreach_window (f, freeze_window_start, (void *) (freeze_p ? f : 0));
}
\f
struct Lisp_Vector *sw1, *sw2;
int i;
+ if (!WINDOW_CONFIGURATIONP (c1))
+ wrong_type_argument (Qwindow_configuration_p, c1);
+ if (!WINDOW_CONFIGURATIONP (c2))
+ wrong_type_argument (Qwindow_configuration_p, c2);
+
d1 = (struct save_window_data *) XVECTOR (c1);
d2 = (struct save_window_data *) XVECTOR (c2);
sw1 = XVECTOR (d1->saved_windows);
{
if (! EQ (p1->hscroll, p2->hscroll))
return 0;
+ if (!EQ (p1->min_hscroll, p2->min_hscroll))
+ return 0;
if (! EQ (p1->start_at_line_beg, p2->start_at_line_beg))
return 0;
if (NILP (Fequal (p1->start, p2->start)))
void
init_window_once ()
{
- selected_frame = make_terminal_frame ();
- XSETFRAME (Vterminal_frame, selected_frame);
- minibuf_window = selected_frame->minibuffer_window;
- selected_window = selected_frame->selected_window;
- last_nonminibuf_frame = selected_frame;
+ struct frame *f = make_terminal_frame ();
+ XSETFRAME (selected_frame, f);
+ Vterminal_frame = selected_frame;
+ minibuf_window = f->minibuffer_window;
+ selected_window = f->selected_window;
+ last_nonminibuf_frame = f;
window_initialized = 1;
}
+void
+init_window ()
+{
+ Vwindow_list = Qnil;
+}
+
void
syms_of_window ()
{
Qtemp_buffer_show_hook = intern ("temp-buffer-show-hook");
staticpro (&Qtemp_buffer_show_hook);
+ staticpro (&Vwindow_list);
+
DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function,
"Non-nil means call as function to display a help buffer.\n\
The function is called with one argument, the buffer to be displayed.\n\
work using this function.");
Vdisplay_buffer_function = Qnil;
+ DEFVAR_LISP ("even-window-heights", &Veven_window_heights,
+ "*If non-nil, `display-buffer' should even the window heights.\n\
+If nil, `display-buffer' will leave the window configuration alone.");
+ Veven_window_heights = Qt;
+
DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuf_scroll_window,
"Non-nil means it is the window that C-M-v in minibuffer should scroll.");
Vminibuf_scroll_window = Qnil;
"*Non-nil means `display-buffer' should make a separate frame.");
pop_up_frames = 0;
+ DEFVAR_BOOL ("display-buffer-reuse-frames", &display_buffer_reuse_frames,
+ "*Non-nil means `display-buffer' should reuse frames.\n\
+If the buffer in question is already displayed in a frame, raise that frame.");
+ display_buffer_reuse_frames = 0;
+
DEFVAR_LISP ("pop-up-frame-function", &Vpop_up_frame_function,
"Function to call to handle automatic new frame creation.\n\
It is called with no arguments and should return a newly created frame.\n\
defsubr (&Sother_window_for_scrolling);
defsubr (&Sscroll_other_window);
defsubr (&Srecenter);
+ defsubr (&Swindow_text_height);
defsubr (&Smove_to_window_line);
defsubr (&Swindow_configuration_p);
defsubr (&Swindow_configuration_frame);
defsubr (&Swindow_vscroll);
defsubr (&Sset_window_vscroll);
defsubr (&Scompare_window_configurations);
+ defsubr (&Swindow_list);
}
void