91 lines
2.9 KiB
Python
91 lines
2.9 KiB
Python
# Copyright (C) 2006, Red Hat, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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import gobject
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from sugar.graphics.canvasicon import CanvasIcon
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class PulsingIcon(CanvasIcon):
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__gproperties__ = {
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'paused' : (bool, None, None, False,
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gobject.PARAM_READWRITE),
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'colors' : (object, None, None,
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gobject.PARAM_READWRITE),
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'pulse-time' : (float, None, None,
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0.0, 500.0, 0.0,
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gobject.PARAM_READWRITE),
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}
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def __init__(self, **kwargs):
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self._paused = False
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self._pulse_time = 0.0
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self._colors = None
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self._pulse_sid = 0
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self._pos = 0
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CanvasIcon.__init__(self, **kwargs)
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def do_set_property(self, pspec, value):
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CanvasIcon.do_set_property(self, pspec, value)
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if pspec.name == 'pulse-time':
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self._pulse_time = value
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self._stop()
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if not self._paused and self._pulse_time > 0.0:
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self._start()
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elif pspec.name == 'colors':
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self._colors = value
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self._pos = 0
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self._update_colors()
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elif pspec.name == 'paused':
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self._paused = value
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if not self._paused and self._pulse_time > 0.0:
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self._start()
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else:
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self._stop()
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def do_get_property(self, pspec):
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CanvasIcon.do_get_property(self, pspec)
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if pspec.name == 'pulse-time':
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return self._pulse_time
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elif pspec.name == 'colors':
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return self._colors
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def _update_colors(self):
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self.props.stroke_color = self._colors[self._pos][0]
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self.props.fill_color = self._colors[self._pos][1]
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def _pulse_timeout(self):
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if self._colors:
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self._update_colors()
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self._pos += 1
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if self._pos == len(self._colors):
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self._pos = 0
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return True
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def _start(self):
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if self._pulse_sid == 0:
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self._pulse_sid = gobject.timeout_add(
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int(self._pulse_time * 1000), self._pulse_timeout)
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def _stop(self):
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if self._pulse_sid:
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gobject.source_remove(self._pulse_sid)
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self._pulse_sid = 0
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