[gtk+] gsk: Add GskRenderNodeClass.finalize()

[Benjamin Otte <otte src gnome org>]

commit be8b9406e51096f9b192af950082f07d034793bb
Author: Benjamin Otte <otte redhat com>
Date:   Sun Dec 11 04:18:25 2016 +0100

    gsk: Add GskRenderNodeClass.finalize()

 gsk/gskrendernode.c        |    4 ++--
 gsk/gskrendernodeimpl.c    |   27 ++++++++++++++++++++++++---
 gsk/gskrendernodeprivate.h |    1 +
 3 files changed, 27 insertions(+), 5 deletions(-)
---
diff --git a/gsk/gskrendernode.c b/gsk/gskrendernode.c
index 6ac7836..310482c 100644
--- a/gsk/gskrendernode.c
+++ b/gsk/gskrendernode.c
@@ -74,8 +74,8 @@ gsk_render_node_finalize (GskRenderNode *self)
 {
   self->is_mutable = TRUE;
 
-  g_clear_pointer (&self->surface, cairo_surface_destroy);
-  g_clear_pointer (&self->texture, gsk_texture_unref);
+  self->node_class->finalize (self);
+
   g_clear_pointer (&self->name, g_free);
 
   while (self->first_child)
diff --git a/gsk/gskrendernodeimpl.c b/gsk/gskrendernodeimpl.c
index 920afaf..0623c50 100644
--- a/gsk/gskrendernodeimpl.c
+++ b/gsk/gskrendernodeimpl.c
@@ -24,9 +24,16 @@
 
 /*** GSK_TEXTURE_NODE ***/
 
+static void
+gsk_texture_node_finalize (GskRenderNode *node)
+{
+  gsk_texture_unref (node->texture);
+}
+
 static const GskRenderNodeClass GSK_TEXTURE_NODE_CLASS = {
   GSK_TEXTURE_NODE,
-  "GskTextureNode"
+  "GskTextureNode",
+  gsk_texture_node_finalize
 };
 
 GskTexture *
@@ -68,9 +75,17 @@ gsk_texture_node_new (GskTexture            *texture,
 
 /*** GSK_CAIRO_NODE ***/
 
+static void
+gsk_cairo_node_finalize (GskRenderNode *node)
+{
+  if (node->surface)
+    cairo_surface_destroy (node->surface);
+}
+
 static const GskRenderNodeClass GSK_CAIRO_NODE_CLASS = {
   GSK_CAIRO_NODE,
-  "GskCairoNode"
+  "GskCairoNode",
+  gsk_cairo_node_finalize
 };
 
 /*< private >
@@ -203,9 +218,15 @@ gsk_cairo_node_get_draw_context (GskRenderNode *node,
 
 /**** GSK_CONTAINER_NODE ***/
 
+static void
+gsk_container_node_finalize (GskRenderNode *node)
+{
+}
+
 static const GskRenderNodeClass GSK_CONTAINER_NODE_CLASS = {
   GSK_CONTAINER_NODE,
-  "GskContainerNode"
+  "GskContainerNode",
+  gsk_container_node_finalize
 };
 
 /**
diff --git a/gsk/gskrendernodeprivate.h b/gsk/gskrendernodeprivate.h
index 3908f94..2c969d1 100644
--- a/gsk/gskrendernodeprivate.h
+++ b/gsk/gskrendernodeprivate.h
@@ -67,6 +67,7 @@ struct _GskRenderNodeClass
 {
   GskRenderNodeType node_type;
   const char *type_name;
+  void (* finalize) (GskRenderNode *node);
 };
 
 GskRenderNode *gsk_render_node_new (const GskRenderNodeClass *node_class);