When converting from any OOo based document to image (through temporary PDF)...

When converting from any OOo based document to image (through temporary PDF) explicitly require conversion for first frame only which is what we expect. Clean up duplicating code.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@37103 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5OOo/Document/OOoDocument.py

@@ -314,7 +314,7 @@ class OOoDocument(PermanentURLMixIn, BaseConvertableFileMixin, File,
       if len(format_list):
         format = format_list[0]
       else:
-        # We must fist make a PDF
+        # We must fist make a PDF which will be used to produce an image out of it
         requires_pdf_first = 1
         format_list = [x for x in self.getTargetFormatList()
                                           if x.endswith('pdf')]
@@ -386,17 +386,14 @@ class OOoDocument(PermanentURLMixIn, BaseConvertableFileMixin, File,
                                        file_name=self.getId(),
                                        temp_object=1)
         temp_image._setData(data)
-        mime, data = temp_image.convert(original_format, display=display, **kw)
-        if requires_pdf_first:
-          if display is None:
-            self.setConversion(data, mime, format=original_format)
-          else:
-            self.setConversion(data, mime, format=original_format, display=display)
-        else:
+        # we care for first page only
+        mime, data = temp_image.convert(original_format, display=display, frame=0, **kw)
+        # store conversion
         if display is None:
           self.setConversion(data, mime, format=original_format)
         else:
           self.setConversion(data, mime, format=original_format, display=display)
+
     if requires_pdf_first:
       format = original_format
     if display is None or original_format not in VALID_IMAGE_FORMAT_LIST: