Fix crashes in print preview

Fixed bugs:
  - https://launchpad.net/bugs/806105

(bzr r10450)

1 files changed, 12 insertions, 0 deletions

diff --git a/src/display/cairo-utils.cpp b/src/display/cairo-utils.cpp
index 90f65c33e..8b75f09a6 100644
--- a/src/display/cairo-utils.cpp
+++ b/src/display/cairo-utils.cpp
@@ -345,6 +345,18 @@ ink_cairo_surface_create_for_argb32_pixbuf(GdkPixbuf *pb)
     return pbs;
 }
 
+/** @brief Cleanup function for GdkPixbuf.
+ * This function should be passed as the GdkPixbufDestroyNotify parameter
+ * to gdk_pixbuf_new_from_data when creating a GdkPixbuf backed by
+ * a Cairo surface.
+ */
+void
+ink_cairo_pixbuf_cleanup(guchar *pixels, void *data)
+{
+    cairo_surface_t *surface = reinterpret_cast<cairo_surface_t*>(data);
+    cairo_surface_destroy(surface);
+}
+
 /** @brief Create an exact copy of a surface.
  * Creates a surface that has the same type, content type, dimensions and contents
  * as the specified surface. */