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(enum save_restore_action): New.

Browse source 
(save_restore_orig_size): Change parameter list.  Add
functionality to check for valid orig_top and orig_height members
in a window tree.
(grow_mini_window): Call save_restore_orig_size with new parameter
list.
(shrink_mini_window): Restore old window sizes only if old
size information is valid in all windows in a window tree.
This commit is contained in:
Gerd Moellmann 1999-10-16 11:24:23 +00:00
parent 01fdb1dd73
commit 43b4a21f4e
1 changed files with 61 additions and 23 deletions
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84
src/window.c
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@ -3318,8 +3318,16 @@ enlarge_window (window, delta, widthflag)
***********************************************************************/
static void shrink_window_lowest_first P_ ((struct window *, int));
static void save_restore_orig_size 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. */
@ -3393,40 +3401,70 @@ shrink_window_lowest_first (w, height)
}
/* Save or restore positions and sizes in the window tree rooted at W.
SAVE_P non-zero means save top position and height in orig_top and
orig_height members of the window structure. Otherwise, restore top
and height from orig_top and orig_height. */
/* Save, restore, or check positions and sizes in the window tree
rooted at W. ACTION says what to do.
static void
save_restore_orig_size (w, save_p)
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.
If ACTION is RESTORE_ORIG_SIZES, restore top and height from
values stored in orig_top and orig_height for all windows. */
static int
save_restore_orig_size (w, action)
struct window *w;
int save_p;
enum save_restore_action action;
{
int success_p = 1;
while (w)
{
if (!NILP (w->hchild))
save_restore_orig_size (XWINDOW (w->hchild), save_p);
else if (!NILP (w->vchild))
save_restore_orig_size (XWINDOW (w->vchild), save_p);
if (save_p)
{
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;
case SAVE_ORIG_SIZES:
w->orig_top = w->top;
w->orig_height = w->height;
}
else
{
XSETFASTINT (w->last_modified, 0);
XSETFASTINT (w->last_overlay_modified, 0);
break;
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 ();
}
XSETFASTINT (w->last_modified, 0);
XSETFASTINT (w->last_overlay_modified, 0);
w = NILP (w->next) ? NULL : XWINDOW (w->next);
}
return success_p;
}
@ -3461,8 +3499,8 @@ grow_mini_window (w, delta)
if (delta)
{
/* Save original window sizes and positions, if not already done. */
if (NILP (root->orig_top))
save_restore_orig_size (root, 1);
if (!save_restore_orig_size (root, CHECK_ORIG_SIZES))
save_restore_orig_size (root, SAVE_ORIG_SIZES);
/* Shrink other windows. */
shrink_window_lowest_first (root, XFASTINT (root->height) - delta);
@ -3490,9 +3528,9 @@ shrink_mini_window (w)
struct frame *f = XFRAME (w->frame);
struct window *root = XWINDOW (FRAME_ROOT_WINDOW (f));
if (!NILP (root->orig_height))
if (save_restore_orig_size (root, CHECK_ORIG_SIZES))
{
save_restore_orig_size (root, 0);
save_restore_orig_size (root, RESTORE_ORIG_SIZES);
adjust_glyphs (f);
FRAME_WINDOW_SIZES_CHANGED (f) = 1;
windows_or_buffers_changed = 1;