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#!/usr/bin/env python
## system-config-printer
## Copyright (C) 2009, 2010 Red Hat, Inc
## Author: Tim Waugh <twaugh@redhat.com>
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 2 of the License, or
## (at your option) any later version.
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
## You should have received a copy of the GNU General Public License
## along with this program; if not, write to the Free Software
## Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
import glib
import gobject
import gtk
class Spinner:
def __init__ (self, image):
self.image = image
frames = []
theme = gtk.icon_theme_get_default ()
icon_info = theme.lookup_icon ("process-working", 22, 0)
if icon_info != None:
size = icon_info.get_base_size ()
icon = icon_info.get_filename ()
try:
pixbuf = gtk.gdk.pixbuf_new_from_file (icon)
grid_width = pixbuf.get_width ()
grid_height = pixbuf.get_height ()
y = 0
while y < grid_height:
x = 0
while x < grid_width:
frame = pixbuf.subpixbuf (x, y, size, size)
frames.append (frame)
x += size
y += size
except gobject.GError:
# Failed to load icon.
pass
self.frames = frames
self.n_frames = len (frames)
self._rest ()
def _set_frame (self, n):
self._current_frame = n
if self.n_frames == 0:
self.image.clear ()
return
self.image.set_from_pixbuf (self.frames[n])
def _rest (self):
self._set_frame (0)
def _next_frame (self):
n = self._current_frame + 1
if n >= self.n_frames:
n = 1
self._set_frame (n)
return True
def start (self, timeout=125):
self._task = glib.timeout_add (timeout, self._next_frame)
def stop (self):
glib.source_remove (self._task)
self._rest ()
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