[IMP] use PyPDF2 if possible

report_qweb_pdf_watermark/README.rst

@@ -10,6 +10,11 @@ This module was written to add watermarks (backgrounds) to PDF reports.
 
 This is necessary because of the way wkhtmltopdf handles headers and footers, in the current versions if quite impossible to have a background for the complete page.
 
+Installation
+============
+
+This module works out of the box, but is faster if you install the python library PyPDF2.
+
 Usage
 =====
 

report_qweb_pdf_watermark/__openerp__.py

@@ -3,7 +3,7 @@
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 {
     "name": "Pdf watermark",
-    "version": "9.0.1.0.0",
+    "version": "9.0.1.0.1",
     "author": "Therp BV,Odoo Community Association (OCA)",
     "license": "AGPL-3",
     "category": "Reporting",

report_qweb_pdf_watermark/models/report.py

@@ -3,10 +3,20 @@
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 from base64 import b64decode
 from logging import getLogger
-from pyPdf import PdfFileWriter, PdfFileReader
-from pyPdf.utils import PdfReadError
 from PIL import Image
 from StringIO import StringIO
+from pyPdf import PdfFileWriter, PdfFileReader
+from pyPdf.utils import PdfReadError
+try:
+    from PyPDF2 import PdfFileWriter, PdfFileReader  # pylint: disable=W0404
+    from PyPDF2.utils import PdfReadError  # pylint: disable=W0404
+except ImportError:
+    pass
+try:
+    # we need this to be sure PIL has loaded PDF support
+    from PIL import PdfImagePlugin  # noqa: F401
+except ImportError:
+    pass
 from openerp import api, models, tools
 logger = getLogger(__name__)