SF.net SVN: matplotlib:[8851] trunk/matplotlib/lib/matplotlib/backends/ backend_pdf.py

[<lee...@us...>]

Revision: 8851
          http://matplotlib.svn.sourceforge.net/matplotlib/?rev=8851&view=rev
Author:   leejjoon
Date:     2010-12-29 08:29:11 +0000 (Wed, 29 Dec 2010)

Log Message:
-----------
pdf backend support affine-transformed image

Modified Paths:
--------------
    trunk/matplotlib/lib/matplotlib/backends/backend_pdf.py

Modified: trunk/matplotlib/lib/matplotlib/backends/backend_pdf.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/backends/backend_pdf.py	2010-12-29 05:21:56 UTC (rev 8850)
+++ trunk/matplotlib/lib/matplotlib/backends/backend_pdf.py	2010-12-29 08:29:11 UTC (rev 8851)
@@ -1386,15 +1386,42 @@
     def get_image_magnification(self):
         return self.image_dpi/72.0
 
-    def draw_image(self, gc, x, y, im):
+    def option_scale_image(self):
+        """
+        pdf backend support arbitrary scaling of image.
+        """
+        return True
+
+    def draw_image(self, gc, x, y, im, dx=None, dy=None, transform=None):
         self.check_gc(gc)
 
         h, w = im.get_size_out()
-        h, w = 72.0*h/self.image_dpi, 72.0*w/self.image_dpi
+
+        if dx is None:
+            w = 72.0*w/self.image_dpi
+        else:
+            w = dx
+
+        if dy is None:
+            h = 72.0*h/self.image_dpi
+        else:
+            h = dy
+        
         imob = self.file.imageObject(im)
-        self.file.output(Op.gsave, w, 0, 0, h, x, y, Op.concat_matrix,
-                         imob, Op.use_xobject, Op.grestore)
 
+        if transform is None:
+            self.file.output(Op.gsave,
+                             w, 0, 0, h, x, y, Op.concat_matrix,
+                             imob, Op.use_xobject, Op.grestore)
+        else:
+            tr1, tr2, tr3, tr4, tr5, tr6 = transform.to_values()
+
+            self.file.output(Op.gsave,
+                             tr1, tr2, tr3, tr4, tr5, tr6, Op.concat_matrix,
+                             w, 0, 0, h, x, y, Op.concat_matrix,
+                             imob, Op.use_xobject, Op.grestore)
+        
+
     def draw_path(self, gc, path, transform, rgbFace=None):
         self.check_gc(gc, rgbFace)
         self.file.writePath(


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