[gnome-control-center/gbsneto/background: 3/5] background: Use the cairo_t provided by GTK

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit fef5e46de9ae4bf3a155e3bb019ef2563cfe8572
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Wed May 22 16:33:16 2019 -0300

    background: Use the cairo_t provided by GTK
    
    Instead of creating our own one using a deprecated function.

 panels/background/cc-background-panel.c | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)
---
diff --git a/panels/background/cc-background-panel.c b/panels/background/cc-background-panel.c
index 3f0a4416b..c00e69c25 100644
--- a/panels/background/cc-background-panel.c
+++ b/panels/background/cc-background-panel.c
@@ -96,19 +96,15 @@ get_or_create_cached_pixbuf (CcBackgroundPanel *panel,
 static void
 update_display_preview (CcBackgroundPanel *panel,
                         GtkWidget         *widget,
+                        cairo_t           *cr,
                         CcBackgroundItem  *background)
 {
-  GdkPixbuf *pixbuf;
-  cairo_t *cr;
+  g_autoptr(GdkPixbuf) pixbuf = NULL;
 
   pixbuf = get_or_create_cached_pixbuf (panel, widget, background);
 
-  cr = gdk_cairo_create (gtk_widget_get_window (widget));
-  gdk_cairo_set_source_pixbuf (cr,
-                               pixbuf,
-                               0, 0);
+  gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
   cairo_paint (cr);
-  cairo_destroy (cr);
 }
 
 static CcBackgroundItem *
@@ -448,7 +444,7 @@ on_preview_draw_cb (GtkWidget         *widget,
                     cairo_t           *cr,
                     CcBackgroundPanel *panel)
 {
-  update_display_preview (panel, widget, panel->current_background);
+  update_display_preview (panel, widget, cr, panel->current_background);
   return TRUE;
 }
 
@@ -457,7 +453,7 @@ on_lock_preview_draw_cb (GtkWidget         *widget,
                          cairo_t           *cr,
                          CcBackgroundPanel *panel)
 {
-  update_display_preview (panel, widget, panel->current_lock_background);
+  update_display_preview (panel, widget, cr, panel->current_lock_background);
   return TRUE;
 }