[gthumb: 97/129] rotate tool: placeholder for future image rotation algorithm

[Paolo Bacchilega <paobac src gnome org>]

commit 90cca1b0faab4287674d69a1257fc61e4cd3b2c7
Author: Stefano Pettini <spettini users sourceforge net>
Date:   Wed Apr 20 13:59:26 2011 +0100

    rotate tool: placeholder for future image rotation algorithm

 extensions/file_tools/gdk-pixbuf-rotate.c |   21 +++++++++++++++++----
 extensions/file_tools/gdk-pixbuf-rotate.h |    4 ++--
 2 files changed, 19 insertions(+), 6 deletions(-)
---
diff --git a/extensions/file_tools/gdk-pixbuf-rotate.c b/extensions/file_tools/gdk-pixbuf-rotate.c
index bd80807..3b85c44 100644
--- a/extensions/file_tools/gdk-pixbuf-rotate.c
+++ b/extensions/file_tools/gdk-pixbuf-rotate.c
@@ -19,13 +19,26 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <gthumb.h>
 #include "gdk-pixbuf-rotate.h"
 
 
-
-void
-_gdk_pixbuf_rotate (GdkPixbuf *src,
+GdkPixbuf*
+_gdk_pixbuf_rotate (GdkPixbuf *src_pixbuf,
 		    double     angle)
 {
-	// TODO: implemement all
+	GdkPixbuf *new_pixbuf;
+	
+	if (angle > 45.0) {
+		new_pixbuf = _gdk_pixbuf_transform (src_pixbuf, GTH_TRANSFORM_ROTATE_90);
+	}
+	else if (angle < -45.0) {
+		new_pixbuf = _gdk_pixbuf_transform (src_pixbuf, GTH_TRANSFORM_ROTATE_270);
+	}
+	else {
+		new_pixbuf = src_pixbuf;
+		g_object_ref (new_pixbuf);
+	}
+	
+	return new_pixbuf;
 }
diff --git a/extensions/file_tools/gdk-pixbuf-rotate.h b/extensions/file_tools/gdk-pixbuf-rotate.h
index 6ecbedb..e0cc9c6 100644
--- a/extensions/file_tools/gdk-pixbuf-rotate.h
+++ b/extensions/file_tools/gdk-pixbuf-rotate.h
@@ -28,8 +28,8 @@
 
 G_BEGIN_DECLS
 
-void _gdk_pixbuf_rotate (GdkPixbuf *src,
-			 double     angle);
+GdkPixbuf* _gdk_pixbuf_rotate (GdkPixbuf *src_pixbuf,
+			       double     angle);
 
 G_END_DECLS