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gdk: Fix invalidation w/ pixel cache when changing child window geometry.

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When moving/scrolling a child window we can't use the current clip
region to limit what is invalidated, because there may be a pixel
cache that listens for changes outside the clip region. Instead
invalidate the entire area and rely on the invalidation code to limit
the repaint to the actually visible area.
This commit is contained in:
Alexander Larsson 2015-11-09 15:14:57 +01:00
parent a0d9728e6c
commit 09a181d205
1 changed files with 17 additions and 7 deletions
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24
gdk/gdkwindow.c
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@ -5761,11 +5761,16 @@ gdk_window_move_resize_internal (GdkWindow *window,
if (gdk_window_is_viewable (window) &&
!window->input_only)
{
GdkRectangle r;
expose = TRUE;
old_region = cairo_region_copy (window->clip_region);
/* Adjust regions to parent window coords */
cairo_region_translate (old_region, window->x, window->y);
r.x = window->x;
r.y = window->y;
r.width = window->width;
r.height = window->height;
old_region = cairo_region_create_rectangle (&r);
}
/* Set the new position and size */
@ -5801,9 +5806,14 @@ gdk_window_move_resize_internal (GdkWindow *window,
if (expose)
{
new_region = cairo_region_copy (window->clip_region);
/* Adjust region to parent window coords */
cairo_region_translate (new_region, window->x, window->y);
GdkRectangle r;
r.x = window->x;
r.y = window->y;
r.width = window->width;
r.height = window->height;
new_region = cairo_region_create_rectangle (&r);
cairo_region_union (new_region, old_region);
@ -5940,7 +5950,7 @@ gdk_window_scroll (GdkWindow *window,
move_native_children (window);
gdk_window_invalidate_region_full (window, window->clip_region, TRUE);
gdk_window_invalidate_rect_full (window, NULL, TRUE);
_gdk_synthesize_crossing_events_for_geometry_change (window);
}