provide a method for querying the image size, e.g. for setting HTML attributes or for permission checks

media/README.txt

@@ -15,11 +15,16 @@ Image Transformations
 =====================
 
   >>> rules = dict(
-  ...           minithumb='size(96, 72)',
+  ...           minithumb='size(96, 1000)',
   ... )
 
   >>> asset = MediaAssetFile(image1, rules, 'image/jpeg')
 
+  >>> asset.getImageSize()
+  (238, 191)
+  >>> asset.getImageSize('minithumb')
+  (96, 77)
+
   >>> asset.transform()
 
 

media/asset.py

@@ -24,6 +24,7 @@ Authors: Johann Schimpf, Erich Seifert.
 $Id$
 """
 
+from cStringIO import StringIO
 from logging import getLogger
 import mimetypes
 import os, re, sys
@@ -79,6 +80,15 @@ class MediaAssetFile(object):
         f.close()
         return data
 
+    def getImageSize(self, variant=None, data=None):
+        if data is None:
+            data = self.getData(variant)
+        pt = PILTransform()
+        pt.open(StringIO(data))
+        if pt.im is None:
+            return (0, 0)
+        return pt.im.size
+
     def getContentType(self, variant=None):
         contentType = self.getMimeType()
         if variant is None:
@@ -169,7 +179,8 @@ class MediaAssetFile(object):
         return self.dataPath
 
     def getOriginalData(self):
-        f = self.getDataPath().open()
+        #f = self.getDataPath().open()
+        f = open(self.getDataPath(), 'rb')
         data = f.read()
         f.close()
         return data