zeroinstall/gtkui/icon.py

   1 """Loading icons."""
   2 # Copyright (C) 2008, Thomas Leonard
   3 # See the README file for details, or visit http://0install.net.
   4
   5 import gtk
   6 from logging import warn
   7
   8 def load_icon(icon_path):
   9         """Load icon from path. Icon MUST be in PNG format.
  10         @param icon_path: pathname of icon, or None to load nothing
  11         @return: a GdkPixbuf, or None on failure"""
  12         if not icon_path:
  13                 return None
  14         try:
  15                 # Icon format must be PNG (to avoid attacks)
  16                 loader = gtk.gdk.PixbufLoader('png')
  17                 try:
  18                         loader.write(file(icon_path).read())
  19                 finally:
  20                         loader.close()
  21                 return loader.get_pixbuf()
  22         except Exception, ex:
  23                 warn("Failed to load cached PNG icon: %s" % ex)
  24                 return None