Workaround for flipping/rotation problem for gdkpixbuf items. See libgnomecanvas...

git-svn-id: https://glabels.svn.sourceforge.net/svnroot/glabels/trunk@177 f5e0f49d-192f-0410-a22d-a8d8700d0965

diff --git a/glabels2/src/view-object.c b/glabels2/src/view-object.c
index 1317b73a3db275ec9aa445968d917c070c4f55b2..c718e65d9a53bcf9355ad5ae9b8313204609e2c6 100644 (file)
--- a/glabels2/src/view-object.c
+++ b/glabels2/src/view-object.c
@@ -27,6 +27,13 @@
 
 #include "debug.h"
 
+/*========================================================*/
+/* Private constants and macros.                          */
+/*========================================================*/
+
+/* Used for a workaround for a bug with images when flipped or rotated by 90 degrees. */
+#define DELTA_DEG 0.0001
+
 /*========================================================*/
 /* Private types.                                         */
 /*========================================================*/
@@ -560,7 +567,7 @@ static void
 flip_rotate_object_cb (glLabelObject *object,
                       glViewObject  *view_object)
 {
-       gdouble          affine[6];
+       gdouble          affine[6], delta_affine[6];
        gdouble          w, h;
        GList           *p, *item_list;
        GnomeCanvasItem *item;
@@ -568,6 +575,11 @@ flip_rotate_object_cb (glLabelObject *object,
        gl_debug (DEBUG_VIEW, "START");
 
        gl_label_object_get_applied_affine (object, affine);
+
+       /* Apply a very small rotation, fixes problems with flipped or rotated images */
+       art_affine_rotate (delta_affine, DELTA_DEG);
+       art_affine_multiply (affine, affine, delta_affine);
+       
        item_list = GNOME_CANVAS_GROUP(view_object->private->group)->item_list;
        for ( p=item_list; p != NULL; p=p->next ) {
                item = GNOME_CANVAS_ITEM(p->data);