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container: Don't create too-large clips

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gdk_rectangle_union will happily add all the worlds pixels
to the union if the initial rectangle is initialized to all
zeros. Therefore, explicitly check for an empty rectangle
before calling it.
This commit is contained in:
Matthias Clasen 2016-01-20 13:42:45 -05:00
parent 51f05a00ae
commit da31eb4f64
1 changed files with 6 additions and 2 deletions
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8
gtk/gtkcontainer.c
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@ -3686,8 +3686,9 @@ gtk_container_should_propagate_draw (GtkContainer *container,
static void
union_with_clip (GtkWidget *widget,
gpointer clip)
gpointer data)
{
GdkRectangle *clip = data;
GtkAllocation widget_clip;
if (!gtk_widget_is_visible (widget) ||
@ -3696,7 +3697,10 @@ union_with_clip (GtkWidget *widget,
gtk_widget_get_clip (widget, &widget_clip);
gdk_rectangle_union (&widget_clip, clip, clip);
if (clip->width == 0 || clip->height == 0)
*clip = widget_clip;
else
gdk_rectangle_union (&widget_clip, clip, clip);
}
void