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Set clip region to empty for non-viewable windows

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This lets us avoid lots of viewable checks and still not waste
time computing clip regions for non-viewable windows
This commit is contained in:
Alexander Larsson 2009-07-20 23:15:34 +02:00
parent 82e609c2a0
commit 3c03683e09
1 changed files with 28 additions and 23 deletions
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51
gdk/gdkwindow.c
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@ -783,33 +783,38 @@ recompute_visible_regions_internal (GdkWindowObject *private,
* siblings in parents above window
*/
clip_region_changed = FALSE;
if (recalculate_clip && private->viewable)
if (recalculate_clip)
{
/* Calculate visible region (sans children) in parent window coords */
r.x = private->x;
r.y = private->y;
r.width = private->width;
r.height = private->height;
new_clip = gdk_region_rectangle (&r);
if (private->parent != NULL &&
private->parent->window_type != GDK_WINDOW_ROOT &&
/* For foreign children, don't remove local parents, as parent
may not be mapped yet, and the non-native parents are not really
enforced for it anyways. */
private->window_type != GDK_WINDOW_FOREIGN)
if (private->viewable)
{
gdk_region_intersect (new_clip, private->parent->clip_region);
/* Calculate visible region (sans children) in parent window coords */
r.x = private->x;
r.y = private->y;
r.width = private->width;
r.height = private->height;
new_clip = gdk_region_rectangle (&r);
/* Remove all overlapping children from parent */
remove_child_area (private->parent, private, FALSE, new_clip);
if (private->parent != NULL &&
private->parent->window_type != GDK_WINDOW_ROOT &&
/* For foreign children, don't remove local parents, as parent
may not be mapped yet, and the non-native parents are not really
enforced for it anyways. */
private->window_type != GDK_WINDOW_FOREIGN)
{
gdk_region_intersect (new_clip, private->parent->clip_region);
/* Remove all overlapping children from parent */
remove_child_area (private->parent, private, FALSE, new_clip);
}
/* Convert from parent coords to window coords */
gdk_region_offset (new_clip, -private->x, -private->y);
if (private->shape)
gdk_region_intersect (new_clip, private->shape);
}
/* Convert from parent coords to window coords */
gdk_region_offset (new_clip, -private->x, -private->y);
if (private->shape)
gdk_region_intersect (new_clip, private->shape);
else
new_clip = gdk_region_new ();
if (private->clip_region == NULL ||
!gdk_region_equal (private->clip_region, new_clip))