scale and catch for avatar & emoticon

src/config.py

@@ -1975,7 +1975,13 @@ class ManageEmoticonsWindow:
 
 	def update_preview(self, widget):
 		path_to_file = widget.get_preview_filename()
-		widget.get_preview_widget().set_from_file(path_to_file)
+		if os.path.isdir(path_to_file):
+			return
+		try:
+			pixbuf = gtk.gdk.pixbuf_new_from_file_at_size(path_to_file, 32, 32)
+		except (gobject.GError, TypeError):
+			return
+		widget.get_preview_widget().set_from_pixbuf(pixbuf)
 
 	def on_set_image_button_clicked(self, widget, data=None):
 		(model, iter) = self.emot_tree.get_selection().get_selected()

src/tabbed_chat_window.py

@@ -206,7 +206,7 @@ timestamp, contact):
 				pixbufloader.write(img_decoded)
 				pixbuf = pixbufloader.get_pixbuf()
 				pixbufloader.close()
-			
+
 				w = gajim.config.get('avatar_width')
 				h = gajim.config.get('avatar_height')
 				scaled_buf = pixbuf.scale_simple(w, h, gtk.gdk.INTERP_HYPER)

src/vcard.py

@@ -19,6 +19,7 @@
 
 import gtk
 import gtk.glade
+import gobject
 import urllib
 import base64
 import mimetypes
@@ -120,7 +121,12 @@ class VcardWindow:
 
 	def update_preview(self, widget):
 		path_to_file = widget.get_preview_filename()
-		pixbuf = gtk.gdk.pixbuf_new_from_file_at_size(path_to_file, 100, 100)
+		if os.path.isdir(path_to_file):
+			return
+		try:
+			pixbuf = gtk.gdk.pixbuf_new_from_file_at_size(path_to_file, 100, 100)
+		except gobject.GError:
+			return
 		widget.get_preview_widget().set_from_pixbuf(pixbuf)
 
 	def on_set_avatar_button_clicked(self, widget):