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overlay: Keep the main child at the bottom

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Since gtk_bin_add does a gtk_widget_set_parent call, we cannot use it in
a GtkBin implementation that has multiple child widgets and cares about
their order.
This commit is contained in:
Timm Bäder 2017-07-20 12:33:57 +02:00
parent 953e762843
commit c3176ed302
1 changed files with 14 additions and 0 deletions
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14
gtk/gtkoverlay.c
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@ -335,6 +335,19 @@ gtk_overlay_get_child_position (GtkOverlay *overlay,
return TRUE;
}
static void
gtk_overlay_add (GtkContainer *container,
GtkWidget *widget)
{
/* We only get into this path if we have no child
* (since GtkOverlay is a GtkBin) and the only child
* we can add through gtk_container_add is the main child,
* which we want to keep the lowest in the hierarchy. */
gtk_widget_insert_after (widget, GTK_WIDGET (container), NULL);
_gtk_bin_set_child (GTK_BIN (container), widget);
}
static void
gtk_overlay_remove (GtkContainer *container,
GtkWidget *widget)
@ -596,6 +609,7 @@ gtk_overlay_class_init (GtkOverlayClass *klass)
widget_class->size_allocate = gtk_overlay_size_allocate;
container_class->add = gtk_overlay_add;
container_class->remove = gtk_overlay_remove;
container_class->forall = gtk_overlay_forall;
container_class->set_child_property = gtk_overlay_set_child_property;