zeroinstall/gtkui/icon.py

   1 """Loading icons."""
   2 # Copyright (C) 2009, Thomas Leonard
   3 # See the README file for details, or visit http://0install.net.
   4
   5 from zeroinstall import _
   6 import gtk
   7 from logging import warn
   8
   9 def load_icon(icon_path):
  10         """Load icon from path. Icon MUST be in PNG format.
  11         @param icon_path: pathname of icon, or None to load nothing
  12         @return: a GdkPixbuf, or None on failure"""
  13         if not icon_path:
  14                 return None
  15         try:
  16                 # Icon format must be PNG (to avoid attacks)
  17                 loader = gtk.gdk.PixbufLoader('png')
  18                 try:
  19                         loader.write(file(icon_path).read())
  20                 finally:
  21                         loader.close()
  22                 return loader.get_pixbuf()
  23         except Exception, ex:
  24                 warn(_("Failed to load cached PNG icon: %s") % ex)
  25                 return None