Sorting seems to work

mitterlib/ui/ui_pygtk.py

@@ -26,6 +26,7 @@ import logging
 import threading
 import Queue
 import re
+import urllib2
 
 from mitterlib.ui.helpers.image_helpers import find_image
 
@@ -465,12 +466,17 @@ class Interface(object):
 
         data = store.get_value(position, 0)
         pic = data.avatar
-        if not pic in self._user_pics:
-            cell.set_property('pixbuf', self._default_pixmap)
+        if not pic in self._avatars:
+            self._threads.add_work(self._post_download_pic,
+                    self._exception_download_pic,
+                    self._download_pic,
+                    pic)
+
+            # set the user avatar to the default image, so it won't get queued
+            # again. Once downloaded, the _post_download_pic will update the
+            # image and force a redraw.
+            self._avatars[pic] = self._default_pixmap
 
-            # just make sure we download this pic too.
-            #self.queue_pic(pic)
-        else:
         cell.set_property('pixbuf', self._user_pics[pic])
 
         return
@@ -621,6 +627,40 @@ class Interface(object):
         _log.debug(str(exception))
         return
 
+    ### image download function
+    def _download_pic(self, url):
+        """Download a picture from the web. Can be used in a thread."""
+        request = urllib2.Request(url=url)
+        _log.debug('Starting request of %s' % (url))
+        response = urllib2.urlopen(request)
+        data = response.read()
+        _log.debug('Request completed')
+
+        return (url, data)
+
+    ### Results from the picture request
+    def _post_download_pic(self, widget, data):
+        """Called after the data from the picture is available."""
+
+        (url, data) = data
+
+        loader = gtk.gdk.PixbufLoader()
+        loader.write(data)
+        loader.close()
+
+        user_pic = loader.get_pixbuf()
+        user_pic = user_pic.scale_simple(48, 48, gtk.gdk.INTERP_BILINEAR)
+        self._avatars[url] = user_pic
+
+        self._grid.queue_draw()
+        return
+
+    def _exception_download_pic(self, widget, exception):
+        """Called in case we have a problem downloading an user avatar."""
+        _log.debug('Exception trying to get an avatar.')
+        _log.debug(str(exception))
+        return
+
     # ------------------------------------------------------------
     # Required functions for all interfaces
     # ------------------------------------------------------------
@@ -633,7 +673,7 @@ class Interface(object):
         self._connection = connection
         self._options = options
 
-        self._user_pics = {}
+        self._avatars = {}
         self._pic_queue = set()
 
         # Load images