[gtk+/wip/window-scales: 43/69] Use gdk_cairo_pixbuf_to_surface when possible

[Alexander Larsson <alexl src gnome org>]

commit c64b269019b2520be5863c534cb78fa48d0b19b7
Author: Alexander Larsson <alexl redhat com>
Date:   Mon Jun 24 12:53:53 2013 +0200

    Use gdk_cairo_pixbuf_to_surface when possible
    
    Rather than creating a surface and drawing to it.

 gtk/gtkcssimagesurface.c |   10 +---------
 gtk/gtkcssstylefuncs.c   |   11 ++---------
 gtk/gtknumerableicon.c   |   12 +-----------
 3 files changed, 4 insertions(+), 29 deletions(-)
---
diff --git a/gtk/gtkcssimagesurface.c b/gtk/gtkcssimagesurface.c
index 8f2e612..a235390 100644
--- a/gtk/gtkcssimagesurface.c
+++ b/gtk/gtkcssimagesurface.c
@@ -142,20 +142,12 @@ _gtk_css_image_surface_new_for_pixbuf (GdkPixbuf *pixbuf)
 {
   GtkCssImage *image;
   cairo_surface_t *surface;
-  cairo_t *cr;
 
   g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), NULL);
 
-  surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
-                                        gdk_pixbuf_get_width (pixbuf),
-                                        gdk_pixbuf_get_height (pixbuf));
-  cr = cairo_create (surface);
-  gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
-  cairo_paint (cr);
-  cairo_destroy (cr);
+  surface = gdk_cairo_pixbuf_to_surface (pixbuf, NULL);
 
   image = _gtk_css_image_surface_new (surface);
-
   cairo_surface_destroy (surface);
 
   return image;
diff --git a/gtk/gtkcssstylefuncs.c b/gtk/gtkcssstylefuncs.c
index b6fefca..a228ea4 100644
--- a/gtk/gtkcssstylefuncs.c
+++ b/gtk/gtkcssstylefuncs.c
@@ -766,7 +766,6 @@ pattern_value_parse (GtkCssParser *parser,
       GFile *file;
       cairo_surface_t *surface;
       cairo_pattern_t *pattern;
-      cairo_t *cr;
       cairo_matrix_t matrix;
 
       file = _gtk_css_parser_read_url (parser);
@@ -784,21 +783,15 @@ pattern_value_parse (GtkCssParser *parser,
           return FALSE;
         }
 
-      surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
-                                            gdk_pixbuf_get_width (pixbuf),
-                                            gdk_pixbuf_get_height (pixbuf));
-      cr = cairo_create (surface);
-      gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
-      cairo_paint (cr);
+      surface = gdk_cairo_pixbuf_to_surface (pixbuf, NULL);
       pattern = cairo_pattern_create_for_surface (surface);
+      cairo_surface_destroy (surface);
 
       cairo_matrix_init_scale (&matrix,
                                gdk_pixbuf_get_width (pixbuf),
                                gdk_pixbuf_get_height (pixbuf));
       cairo_pattern_set_matrix (pattern, &matrix);
 
-      cairo_surface_destroy (surface);
-      cairo_destroy (cr);
       g_object_unref (pixbuf);
 
       g_value_take_boxed (value, pattern);
diff --git a/gtk/gtknumerableicon.c b/gtk/gtknumerableicon.c
index f9233a5..e1811c6 100644
--- a/gtk/gtknumerableicon.c
+++ b/gtk/gtknumerableicon.c
@@ -196,7 +196,6 @@ draw_from_gicon (GtkNumerableIcon *self)
   GtkIconInfo *info;
   GdkPixbuf *pixbuf;
   cairo_surface_t *surface;
-  cairo_t *cr;
 
   if (self->priv->style != NULL)
     {
@@ -220,16 +219,7 @@ draw_from_gicon (GtkNumerableIcon *self)
   if (pixbuf == NULL)
     return NULL;
 
-  surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
-                                        gdk_pixbuf_get_width (pixbuf),
-                                        gdk_pixbuf_get_height (pixbuf));
-
-  cr = cairo_create (surface);
-
-  gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
-  cairo_paint (cr);
-
-  cairo_destroy (cr);
+  surface = gdk_cairo_pixbuf_to_surface (pixbuf, NULL);
   g_object_unref (pixbuf);
 
   return surface;