diff options
Diffstat (limited to 'src/view/pulsingicon.py')
-rw-r--r-- | src/view/pulsingicon.py | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/src/view/pulsingicon.py b/src/view/pulsingicon.py new file mode 100644 index 0000000..9e7b3d9 --- /dev/null +++ b/src/view/pulsingicon.py @@ -0,0 +1,90 @@ +# Copyright (C) 2006-2007 Red Hat, Inc. +# +# 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + +import gobject + +from sugar.graphics.icon import CanvasIcon + +class PulsingIcon(CanvasIcon): + __gproperties__ = { + 'paused' : (bool, None, None, False, + gobject.PARAM_READWRITE), + 'colors' : (object, None, None, + gobject.PARAM_READWRITE), + 'pulse-time' : (float, None, None, + 0.0, 500.0, 0.0, + gobject.PARAM_READWRITE), + } + + def __init__(self, **kwargs): + self._paused = False + self._pulse_time = 0.0 + self._colors = None + self._pulse_sid = 0 + self._pos = 0 + + CanvasIcon.__init__(self, **kwargs) + + def do_set_property(self, pspec, value): + CanvasIcon.do_set_property(self, pspec, value) + + if pspec.name == 'pulse-time': + self._pulse_time = value + self._stop() + if not self._paused and self._pulse_time > 0.0: + self._start() + elif pspec.name == 'colors': + self._colors = value + self._pos = 0 + self._update_colors() + elif pspec.name == 'paused': + self._paused = value + if not self._paused and self._pulse_time > 0.0: + self._start() + else: + self._stop() + + def do_get_property(self, pspec): + CanvasIcon.do_get_property(self, pspec) + + if pspec.name == 'pulse-time': + return self._pulse_time + elif pspec.name == 'colors': + return self._colors + + def _update_colors(self): + self.props.stroke_color = self._colors[self._pos][0] + self.props.fill_color = self._colors[self._pos][1] + + def _pulse_timeout(self): + if self._colors: + self._update_colors() + + self._pos += 1 + if self._pos == len(self._colors): + self._pos = 0 + + return True + + def _start(self): + if self._pulse_sid == 0: + self._pulse_sid = gobject.timeout_add( + int(self._pulse_time * 1000), self._pulse_timeout) + + def _stop(self): + if self._pulse_sid: + gobject.source_remove(self._pulse_sid) + self._pulse_sid = 0 |