[Erp5-report] r29404 - /erp5/trunk/products/ERP5/Document/PDFDocument.py

[nobody at svn.erp5.org]

Author: kazuhiko
Date: Sat Oct  3 08:31:21 2009
New Revision: 29404

URL: http://svn.erp5.org?rev=29404&view=rev
Log:
if the dimension is too big, rasterized image can be too big. so we
limit the maximum of rasterized image to 4096 pixles.

XXX since the dimention can be different on each page, it is better to
call 'pdfinfo -f page_num -l page_num' to get the size of each page.

Modified:
    erp5/trunk/products/ERP5/Document/PDFDocument.py

Modified: erp5/trunk/products/ERP5/Document/PDFDocument.py
URL: http://svn.erp5.org/erp5/trunk/products/ERP5/Document/PDFDocument.py?rev=29404&r1=29403&r2=29404&view=diff
==============================================================================
--- erp5/trunk/products/ERP5/Document/PDFDocument.py [utf8] (original)
+++ erp5/trunk/products/ERP5/Document/PDFDocument.py [utf8] Sat Oct  3 08:31:21 2009
@@ -161,9 +161,24 @@
       text = ''
       content_information = self.getContentInformation()
       page_count = int(content_information.get('Pages', 0))
+      try:
+        # if the dimension is too big, rasterized image can be too
+        # big. so we limit the maximum of rasterized image to 4096
+        # pixles.
+        # XXX since the dimention can be different on each page, it is
+        # better to call 'pdfinfo -f page_num -l page_num' to get the
+        # size of each page.
+        max_size = 4096
+        size = content_information.get('Page size',
+                                       '%s x %s pts' % (max_size, max_size))
+        width = int(size.split(' ')[0])
+        height = int(size.split(' ')[2])
+        resolution = 72.0 * max_size / max(width, height)
+      except ValueError, ZeroDivisionError:
+        resolution = None
       for page_number in range(page_count):
         src_mimetype, png_data = self.convert(
-            'png', quality=100, resolution=300,
+            'png', quality=100, resolution=resolution,
             frame=page_number, display='identical')
         if not src_mimetype.endswith('png'):
           continue