[gtk+/wip/ebassi/gsk: 6/11] drawingarea: Resize the GSK layer on allocation changes

[Emmanuele Bassi <ebassi src gnome org>]

commit e993f4a2ce33602cbaf6f03bce25075342e8d92c
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Mon Mar 16 18:49:17 2015 +0000

    drawingarea: Resize the GSK layer on allocation changes
    
    Sadly, GtkDrawingArea still overrides GtkWidget::size-allocate, which
    means that we need to explicitly resize the GskLayer root, like we
    resize the GdkWindow.

 gtk/gtkdrawingarea.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkdrawingarea.c b/gtk/gtkdrawingarea.c
index a9b659e..81f4db3 100644
--- a/gtk/gtkdrawingarea.c
+++ b/gtk/gtkdrawingarea.c
@@ -205,6 +205,16 @@ gtk_drawing_area_size_allocate (GtkWidget     *widget,
                                 allocation->x, allocation->y,
                                 allocation->width, allocation->height);
 
+      if (gtk_widget_get_has_layer (widget))
+        {
+          graphene_rect_t bounds;
+
+          graphene_rect_init (&bounds, 
+                              0, 0,
+                              allocation->width, allocation->height);
+          gsk_layer_set_bounds (gtk_widget_get_layer (widget), &bounds);
+        }
+
       gtk_drawing_area_send_configure (GTK_DRAWING_AREA (widget));
     }
 }