[gtk+/wip/ebassi/gsk-renderer: 74/83] Fix fallback render nodes

[Emmanuele Bassi <ebassi src gnome org>]

commit 01d463526b369f9c06c31efb87405fe0731130e4
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Aug 4 01:05:14 2016 -0400

    Fix fallback render nodes
    
    We were allocating a surface thats big enough for the clip, and
    we were setting the transform for that, but then GtkContainer
    was overriding the transform with the one for the allocation.
    Also, we were drawing at the clip position, not the allocation
    position.

 gtk/gtkwidget.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index fa850f9..1617579 100644
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -17487,10 +17487,12 @@ gtk_widget_get_render_node (GtkWidget   *widget,
   graphene_point3d_t tmp;
   graphene_rect_t bounds;
   GtkAllocation clip;
+  GtkAllocation alloc;
 
   gtk_widget_get_clip (widget, &clip);
+  gtk_widget_get_allocation (widget, &alloc);
   graphene_rect_init (&bounds, 0, 0, clip.width, clip.height);
-  graphene_matrix_init_translate (&m, graphene_point3d_init (&tmp, clip.x, clip.y, 0.f));
+  graphene_matrix_init_translate (&m, graphene_point3d_init (&tmp, alloc.x, alloc.y, 0.f));
 
   /* Compatibility mode: if the widget does not have a render node, we draw
    * using gtk_widget_draw() on a temporary node
@@ -17500,6 +17502,7 @@ gtk_widget_get_render_node (GtkWidget   *widget,
       GskRenderNode *tmp;
       cairo_t *cr;
       char *str;
+      graphene_point3d_t p;
 
       str = g_strconcat ("Fallback<", G_OBJECT_TYPE_NAME (widget), ">", NULL);
 
@@ -17508,6 +17511,8 @@ gtk_widget_get_render_node (GtkWidget   *widget,
       gsk_render_node_set_bounds (tmp, &bounds);
       gsk_render_node_set_transform (tmp, &m);
       cr = gsk_render_node_get_draw_context (tmp);
+      cairo_translate (cr, alloc.x - clip.x, alloc.y - clip.y);
+      gsk_render_node_set_offset (tmp, graphene_point3d_init (&p, clip.x - alloc.x, clip.y - alloc.y, 0.f));
 
       gtk_widget_draw (widget, cr);