New feature: qr-code for system url on participants password pdf.

(Note: New dependency! Run 'pip install qrcode')

Fixed pep8 issues. Create qr-code image for system url one time only.

New feature: qr-code for system url on participants password pdf.
(Note: New dependency! Run 'pip install qrcode')

Fixed pep8 issues. Create qr-code image for system url one time only.

Print qrcode image from StringIO stream.
Adapted table stylesheet for better integration of reportlab's Image object.

Fixed pep8 issue.

Made qrcode import as optional feature. Fixed pep8 issue.

openslides/participant/views.py

@@ -10,13 +10,21 @@
     :license: GNU GPL, see LICENSE for more details.
 """
 
+try:
+    import qrcode
+except ImportError:
+    draw_qrcode = False
+else:
+    draw_qrcode = True
+
+from cStringIO import StringIO
 from urllib import urlencode
 from urlparse import parse_qs
 
 from reportlab.lib import colors
 from reportlab.lib.units import cm
 from reportlab.platypus import (
-    SimpleDocTemplate, Paragraph, LongTable, Spacer, Table, TableStyle)
+    SimpleDocTemplate, Paragraph, LongTable, Spacer, Table, TableStyle, Image)
 
 from django.contrib import messages
 from django.contrib.auth.decorators import login_required
@@ -229,13 +237,21 @@ class ParticipantsPasswordsPDF(PDFView):
             sort = 'first_name'
         else:
             sort = 'last_name'
+        # create qrcode image object from system url
+        if draw_qrcode:
+            qrcode_img = qrcode.make(participant_pdf_system_url)
+            img_stream = StringIO()
+            qrcode_img.save(img_stream, 'PNG')
+            img_stream.seek(0)
+            size = 2*cm
+            I = Image(img_stream, width=size, height=size)
         for user in User.objects.all().order_by(sort):
             cell = []
             cell.append(Spacer(0, 0.8 * cm))
             cell.append(Paragraph(_("Account for OpenSlides"),
-                        stylesheet['Ballot_title']))
+                        stylesheet['Password_title']))
             cell.append(Paragraph(_("for %s") % (user),
-                        stylesheet['Ballot_subtitle']))
+                        stylesheet['Password_subtitle']))
             cell.append(Spacer(0, 0.5 * cm))
             cell.append(Paragraph(_("User: %s") % (user.username),
                         stylesheet['Monotype']))
@@ -243,12 +259,10 @@ class ParticipantsPasswordsPDF(PDFView):
                 Paragraph(
                     _("Password: %s")
                     % (user.default_password), stylesheet['Monotype']))
-            cell.append(Spacer(0, 0.5 * cm))
             cell.append(
-                Paragraph(
-                    _("URL: %s") % (participant_pdf_system_url),
-                    stylesheet['Ballot_option']))
-            cell.append(Spacer(0, 0.5 * cm))
+                Paragraph(participant_pdf_system_url, stylesheet['Monotype']))
+            if draw_qrcode:
+                cell.append(I)
             cell2 = []
             cell2.append(Spacer(0, 0.8 * cm))
             if participant_pdf_welcometext is not None:
@@ -264,6 +278,7 @@ class ParticipantsPasswordsPDF(PDFView):
         # build table
         t = Table(data, 10.5 * cm, 7.42 * cm)
         t.setStyle(TableStyle([
+            ('LEFTPADDING', (0, 0), (0, -1), 30),
             ('LINEBELOW', (0, 0), (-1, 0), 0.25, colors.grey),
             ('LINEBELOW', (0, 1), (-1, 1), 0.25, colors.grey),
             ('LINEBELOW', (0, 1), (-1, -1), 0.25, colors.grey),

openslides/utils/pdf.py

@@ -147,13 +147,6 @@ stylesheet.add(ParagraphStyle(name='Ballot_option',
                               leading=24,
                               leftIndent=30),
                )
-stylesheet.add(ParagraphStyle(name='Monotype',
-                              parent=stylesheet['Normal'],
-                              fontName='Courier',
-                              fontSize=12,
-                              leading=24,
-                              leftIndent=30),
-               )
 stylesheet.add(ParagraphStyle(name='Ballot_option_name',
                               parent=stylesheet['Normal'],
                               fontSize=12,
@@ -179,6 +172,22 @@ stylesheet.add(ParagraphStyle(name='Ballot_option_group_right',
                               leading=16,
                               leftIndent=49),
                )
+# Password paper stylesheets
+stylesheet.add(ParagraphStyle(name='Password_title',
+                              parent=stylesheet['Ballot_title'],
+                              leftIndent=0),
+               )
+stylesheet.add(ParagraphStyle(name='Password_subtitle',
+                              parent=stylesheet['Ballot_subtitle'],
+                              leftIndent=0),
+               )
+stylesheet.add(ParagraphStyle(name='Monotype',
+                              parent=stylesheet['Normal'],
+                              fontName='Courier',
+                              fontSize=12,
+                              leading=24,
+                              leftIndent=0),
+               )
 stylesheet.add(ParagraphStyle(name='Badge_title',
                               parent=stylesheet['Bold'],
                               fontSize=16,

requirements.txt

@@ -6,3 +6,5 @@ coverage==3.6
 django-discover-runner==0.3
 pep8==1.4.4
 tornado==2.4.1
+qrcode==2.5.1
+