From e49990f30011e96512187c212819a1a1630b0a56 Mon Sep 17 00:00:00 2001
From: Michael Ziegler <diese-addy@funzt-halt.net>
Date: Thu, 11 Nov 2010 22:51:35 +0100
Subject: [PATCH] if qrencode is available, display a QR code for the channel
 viewer

---
 pyweb/mumble/templates/mumble/mumble.html |  8 ++++++-
 pyweb/mumble/urls.py                      |  3 ++-
 pyweb/mumble/views.py                     | 26 +++++++++++++++++++++++
 3 files changed, 35 insertions(+), 2 deletions(-)

diff --git a/pyweb/mumble/templates/mumble/mumble.html b/pyweb/mumble/templates/mumble/mumble.html
index 1a03ff9..eaabf62 100644
--- a/pyweb/mumble/templates/mumble/mumble.html
+++ b/pyweb/mumble/templates/mumble/mumble.html
@@ -105,7 +105,13 @@
                     plugins: [ new Ext.ux.TabScrollerMenu() ],
                     items: [{
                         title: gettext("Server info"),
-                        html:  renderserverinfos( {{ ServerDict|safe }} )
+                        {% if QRAvailable %}
+                            html:  ('<img src="{% url mumble.views.qrcode MumbleServer.id %}" ' +
+                                    'style="float: right" alt="QR Code for embedded view"/>' +
+                                    renderserverinfos( {{ ServerDict|safe }} ))
+                        {% else %}
+                            html:  renderserverinfos( {{ ServerDict|safe }} )
+                        {% endif %}
                     }
                     {% if user.is_authenticated %},
                         {
diff --git a/pyweb/mumble/urls.py b/pyweb/mumble/urls.py
index b86828e..cb1e314 100644
--- a/pyweb/mumble/urls.py
+++ b/pyweb/mumble/urls.py
@@ -37,7 +37,8 @@ urlpatterns = patterns(
     ( r'mobile/(?P<server>\d+)/?$',          'mobile_show'     ),
     ( r'mobile/?$',                          'mobile_mumbles'  ),
 
-    ( r'embed/(?P<server>\d+)/?$',           'embed'            ),
+    ( r'embed/(?P<server>\d+)/?$',           'embed'           ),
+    ( r'qrcode/(?P<server>\d+).png',        'qrcode'           ),
 
     ( r'(?P<server>\d+).json',               'cvp_json'        ),
     ( r'(?P<server>\d+).xml',                'cvp_xml'         ),
diff --git a/pyweb/mumble/views.py b/pyweb/mumble/views.py
index bf5ed51..efb65dc 100644
--- a/pyweb/mumble/views.py
+++ b/pyweb/mumble/views.py
@@ -168,12 +168,20 @@ def show( request, server ):
         regformname = "MumbleUserForm"
         EXT_FORMS_PROVIDER.register_form( MumbleUserForm )
 
+    try:
+        import qrencode
+    except ImportError:
+        qravail = False
+    else:
+        qravail = True
+
     return render_to_response( 'mumble/mumble.html', {
             'MumbleServer': srv,
             'ServerDict':   simplejson.dumps(serverinfo(request, server)),
             'RegForm':      regformname,
             'MumbleActive': True,
             'MumbleAccount':user,
+            'QRAvailable':  qravail,
             'IsAdmin':      isAdmin,
         }, context_instance = RequestContext(request) )
 
@@ -230,6 +238,24 @@ def showTexture( request, server, userid ):
         img.save( buf, "PNG" )
         return HttpResponse( buf.getvalue(), "image/png" )
 
+def qrcode( request, server ):
+    """ Show a QR Coce image that links to the server's embedded page. """
+
+    try:
+        import qrencode
+    except ImportError:
+        return HttpResponse( "oh noez" )
+    else:
+        from django.contrib.sites.models import Site
+        version, size, img = qrencode.encode_scaled( "%s://%s%s" % (
+            { False: "http", True: "https" }[request.is_secure()],
+            Site.objects.get_current().domain,
+            reverse( embed, kwargs={ 'server': server } )
+            ), 100 )
+        buf = StringIO()
+        img.save( buf, "PNG" )
+        return HttpResponse( buf.getvalue(), "image/png" )
+
 @EXT_DIRECT_PROVIDER.register_method( "Mumble" )
 def get_admin( request, server ):
     srv = get_object_or_404( Mumble, id=int(server) )