[dia] [transform] xfig: finally support object transformation via draw_object()

[Hans Breuer <hans src gnome org>]

commit 8cfe5c001d6c9360cb85687df1c19f8892149e15
Author: Hans Breuer <hans breuer org>
Date:   Sat Oct 11 20:23:23 2014 +0200

    [transform] xfig: finally support object transformation via draw_object()
    
    a given matrix was turned to a g_warning() in 2010 with commit
    cd3b2398704b7c08b9c3e42cd32bac2c78dc7370 but forgotten in 2013 when
    DiaTransformRenderer was introduced with commit
    507f0cbc725115d14933372272bd67569bee367f

 plug-ins/xfig/xfig-export.c |   18 +++++++++++++-----
 1 files changed, 13 insertions(+), 5 deletions(-)
---
diff --git a/plug-ins/xfig/xfig-export.c b/plug-ins/xfig/xfig-export.c
index d7c6e1a..4ea32ba 100644
--- a/plug-ins/xfig/xfig-export.c
+++ b/plug-ins/xfig/xfig-export.c
@@ -47,6 +47,7 @@
 #include "properties.h"
 #include "dia_image.h"
 #include "group.h"
+#include "diatransformrenderer.h"
 
 #include "xfig.h"
 
@@ -1064,13 +1065,20 @@ draw_object(DiaRenderer *self,
 {
   XfigRenderer *renderer = XFIG_RENDERER(self);
 
-  if (!renderer->color_pass)
+  if (renderer->color_pass) {
+    /* color pass does not need transformation */
+    object->ops->draw(object, DIA_RENDERER(renderer));
+  } else {
     fprintf(renderer->file, "6 0 0 0 0\n");
-  if (matrix)
-    g_warning ("XFigRenderer no transformations");
-  object->ops->draw(object, DIA_RENDERER(renderer));
-  if (!renderer->color_pass)
+    if (matrix) {
+      DiaRenderer *tr = dia_transform_renderer_new (self);
+      DIA_RENDERER_GET_CLASS(tr)->draw_object (tr, object, matrix);
+      g_object_unref (tr);
+    } else {
+      object->ops->draw(object, DIA_RENDERER(renderer));
+    }
     fprintf(renderer->file, "-6\n");
+  }
 }
 
 static gboolean