forked from AuroraMiddleware/gtk
GtkContainer: Propagate draws in GdkWindow order
Now that we're not drawing the GdkWindows by themeselves we need to propagate into children in the same order as the windows were painted otherwise apps can't rely on stacking order to overlay children. This is still not 100% the same as the old behaviour, because we're treating all windows that are part of a window at the same time (to allow e.g. opacity groups), and we're only looking at order for the main windows of a widget. However, this fixes at least the ordering of the gnome-boxes fullscreen overlay toolbar. https://bugzilla.gnome.org/show_bug.cgi?id=699970
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c3973e8468
@ -346,6 +346,9 @@ static void gtk_container_buildable_custom_tag_end (GtkBuildable *buildable,
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const gchar *tagname,
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gpointer *data);
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static gboolean gtk_container_should_propagate_draw (GtkContainer *container,
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GtkWidget *child,
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cairo_t *cr);
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/* --- variables --- */
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static const gchar vadjustment_key[] = "gtk-vadjustment";
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@ -3261,36 +3264,82 @@ gtk_container_show_all (GtkWidget *widget)
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gtk_widget_show (widget);
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}
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typedef struct {
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GtkWidget *child;
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int window_depth;
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} ChildOrderInfo;
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static void
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gtk_container_draw_child (GtkWidget *child,
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gpointer client_data)
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gtk_container_draw_forall (GtkWidget *widget,
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gpointer client_data)
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{
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struct {
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GtkWidget *container;
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GtkContainer *container;
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GArray *child_infos;
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cairo_t *cr;
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} *data = client_data;
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ChildOrderInfo info;
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GList *siblings;
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GdkWindow *window;
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gtk_container_propagate_draw (GTK_CONTAINER (data->container),
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child,
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data->cr);
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if (gtk_container_should_propagate_draw (data->container, widget, data->cr))
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{
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info.child = widget;
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info.window_depth = G_MAXINT;
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if (gtk_widget_get_has_window (widget))
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{
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window = gtk_widget_get_window (widget);
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siblings = gdk_window_peek_children (gdk_window_get_parent (window));
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info.window_depth = g_list_index (siblings, window);
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}
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g_array_append_val (data->child_infos, info);
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}
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}
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static gint
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compare_children_for_draw (gconstpointer _a,
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gconstpointer _b)
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{
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const ChildOrderInfo *a = _a;
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const ChildOrderInfo *b = _b;
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return b->window_depth - a->window_depth;
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}
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static gint
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gtk_container_draw (GtkWidget *widget,
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cairo_t *cr)
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{
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GtkContainer *container = GTK_CONTAINER (widget);
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GArray *child_infos;
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int i;
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ChildOrderInfo *child_info;
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struct {
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GtkWidget *container;
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GtkContainer *container;
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GArray *child_infos;
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cairo_t *cr;
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} data;
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data.container = widget;
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data.cr = cr;
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child_infos = g_array_new (FALSE, TRUE, sizeof (ChildOrderInfo));
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gtk_container_forall (GTK_CONTAINER (widget),
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gtk_container_draw_child,
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data.container = container;
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data.cr = cr;
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data.child_infos = child_infos;
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gtk_container_forall (container,
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gtk_container_draw_forall,
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&data);
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g_array_sort (child_infos, compare_children_for_draw);
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for (i = 0; i < child_infos->len; i++)
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{
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child_info = &g_array_index (child_infos, ChildOrderInfo, i);
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gtk_container_propagate_draw (container,
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child_info->child, cr);
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}
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g_array_free (child_infos, TRUE);
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return FALSE;
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}
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@ -3335,6 +3384,39 @@ gtk_container_unmap (GtkWidget *widget)
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NULL);
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}
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static gboolean
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gtk_container_should_propagate_draw (GtkContainer *container,
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GtkWidget *child,
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cairo_t *cr)
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{
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GdkEventExpose *event;
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GdkWindow *event_window, *child_in_window;
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if (!gtk_widget_is_drawable (child))
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return FALSE;
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/* Only propagate to native child window if we're not handling
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an expose (i.e. in a pure gtk_widget_draw() call */
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event = _gtk_cairo_get_event (cr);
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if (event &&
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(gtk_widget_get_has_window (child) &&
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gdk_window_has_native (gtk_widget_get_window (child))))
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return FALSE;
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/* Never propagate to a child window when exposing a window
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that is not the one the child widget is in. */
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event_window = _gtk_cairo_get_event_window (cr);
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if (gtk_widget_get_has_window (child))
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child_in_window = gdk_window_get_parent (gtk_widget_get_window (child));
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else
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child_in_window = gtk_widget_get_window (child);
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if (event_window != NULL && child_in_window != event_window)
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return FALSE;
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return TRUE;
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}
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/**
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* gtk_container_propagate_draw:
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* @container: a #GtkContainer
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@ -3364,9 +3446,8 @@ gtk_container_propagate_draw (GtkContainer *container,
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GtkWidget *child,
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cairo_t *cr)
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{
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GdkEventExpose *event;
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GtkAllocation allocation;
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GdkWindow *window, *w, *event_window, *child_in_window;
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GdkWindow *window, *w;
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int x, y;
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g_return_if_fail (GTK_IS_CONTAINER (container));
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@ -3375,25 +3456,7 @@ gtk_container_propagate_draw (GtkContainer *container,
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g_assert (gtk_widget_get_parent (child) == GTK_WIDGET (container));
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if (!gtk_widget_is_drawable (child))
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return;
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/* Only propagate to native child window if we're not handling
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an expose (i.e. in a pure gtk_widget_draw() call */
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event = _gtk_cairo_get_event (cr);
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if (event &&
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(gtk_widget_get_has_window (child) &&
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gdk_window_has_native (gtk_widget_get_window (child))))
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return;
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/* Never propagate to a child window when exposing a window
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that is not the one the child widget is in. */
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event_window = _gtk_cairo_get_event_window (cr);
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if (gtk_widget_get_has_window (child))
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child_in_window = gdk_window_get_parent (gtk_widget_get_window (child));
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else
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child_in_window = gtk_widget_get_window (child);
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if (event_window != NULL && child_in_window != event_window)
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if (!gtk_container_should_propagate_draw (container, child, cr))
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return;
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cairo_save (cr);
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