[gtk+] Tweak transform node apis

[Matthias Clasen <matthiasc src gnome org>]

commit b76c5abb573f1fffd69ffdc0dc637a7ebdf8df78
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Oct 20 09:31:14 2017 +0200

    Tweak transform node apis
    
    Rename the getter to follow the peek naming scheme.
    
    Update all callers.

 gsk/gskglrenderer.c       |    2 +-
 gsk/gskrendernode.h       |    4 ++--
 gsk/gskrendernodeimpl.c   |    9 ++++-----
 gsk/gskvulkanrenderpass.c |    9 ++++-----
 4 files changed, 11 insertions(+), 13 deletions(-)
---
diff --git a/gsk/gskglrenderer.c b/gsk/gskglrenderer.c
index 768467f..ee9ac46 100644
--- a/gsk/gskglrenderer.c
+++ b/gsk/gskglrenderer.c
@@ -907,7 +907,7 @@ gsk_gl_renderer_add_render_item (GskGLRenderer           *self,
       {
         graphene_matrix_t transform, transformed_mv;
 
-        gsk_transform_node_get_transform (node, &transform);
+        graphene_matrix_init_from_matrix (&transform, gsk_transform_node_peek_transform (node));
         graphene_matrix_multiply (&transform, modelview, &transformed_mv);
         gsk_gl_renderer_add_render_item (self,
                                          projection, &transformed_mv,
diff --git a/gsk/gskrendernode.h b/gsk/gskrendernode.h
index cec3728..2d70939 100644
--- a/gsk/gskrendernode.h
+++ b/gsk/gskrendernode.h
@@ -203,8 +203,8 @@ GskRenderNode *         gsk_transform_node_new                  (GskRenderNode
 GDK_AVAILABLE_IN_3_90
 GskRenderNode *         gsk_transform_node_get_child            (GskRenderNode            *node);
 GDK_AVAILABLE_IN_3_94
-void                    gsk_transform_node_get_transform        (GskRenderNode            *node,
-                                                                 graphene_matrix_t        *transform);
+const graphene_matrix_t *
+                        gsk_transform_node_peek_transform       (GskRenderNode            *node);
 
 GDK_AVAILABLE_IN_3_90
 GskRenderNode *         gsk_opacity_node_new                    (GskRenderNode            *child,
diff --git a/gsk/gskrendernodeimpl.c b/gsk/gskrendernodeimpl.c
index e35c1cd..157835f 100644
--- a/gsk/gskrendernodeimpl.c
+++ b/gsk/gskrendernodeimpl.c
@@ -2326,15 +2326,14 @@ gsk_transform_node_get_child (GskRenderNode *node)
   return self->child;
 }
 
-void
-gsk_transform_node_get_transform (GskRenderNode     *node,
-                                  graphene_matrix_t *transform)
+const graphene_matrix_t *
+gsk_transform_node_peek_transform (GskRenderNode *node)
 {
   GskTransformNode *self = (GskTransformNode *) node;
 
-  g_return_if_fail (GSK_IS_RENDER_NODE_TYPE (node, GSK_TRANSFORM_NODE));
+  g_return_val_if_fail (GSK_IS_RENDER_NODE_TYPE (node, GSK_TRANSFORM_NODE), NULL);
 
-  graphene_matrix_init_from_matrix (transform, &self->transform);
+  return &self->transform;
 }
 
 /*** GSK_OPACITY_NODE ***/
diff --git a/gsk/gskvulkanrenderpass.c b/gsk/gskvulkanrenderpass.c
index 40d2717..6b83e8a 100644
--- a/gsk/gskvulkanrenderpass.c
+++ b/gsk/gskvulkanrenderpass.c
@@ -555,8 +555,7 @@ gsk_vulkan_render_pass_add_node (GskVulkanRenderPass           *self,
 
     case GSK_TRANSFORM_NODE:
       {
-        graphene_matrix_t transform;
-        graphene_matrix_t mv;
+        graphene_matrix_t transform, mv;
         GskRenderNode *child;
 
 #if 0
@@ -564,8 +563,8 @@ gsk_vulkan_render_pass_add_node (GskVulkanRenderPass           *self,
           FALLBACK ("Transform nodes can't deal with clip type %u\n", clip->type);
 #endif
 
-        gsk_transform_node_get_transform (node, &transform);
-        mv = self->mv;
+        graphene_matrix_init_from_matrix (&transform, gsk_transform_node_peek_transform (node));
+        graphene_matrix_init_from_matrix (&mv, &self->mv);
         graphene_matrix_multiply (&transform, &mv, &self->mv);
         child = gsk_transform_node_get_child (node);
         if (!gsk_vulkan_push_constants_transform (&op.constants.constants, constants, &transform, 
&child->bounds))
@@ -575,7 +574,7 @@ gsk_vulkan_render_pass_add_node (GskVulkanRenderPass           *self,
 
         gsk_vulkan_render_pass_add_node (self, render, &op.constants.constants, child);
         gsk_vulkan_push_constants_init_copy (&op.constants.constants, constants);
-        self->mv = mv;
+        graphene_matrix_init_from_matrix (&self->mv, &mv);
         g_array_append_val (self->render_ops, op);
       }
       return;