sugar-toolkit-gtk3/shell/view/home/transitionbox.py
2007-04-16 12:26:17 +02:00

67 lines
2.1 KiB
Python

# Copyright (C) 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 hippo
import gobject
from sugar.graphics import units
from sugar.graphics import animator
from sugar.graphics.spreadbox import SpreadBox
from view.home.MyIcon import MyIcon
class _Animation(animator.Animation):
def __init__(self, icon, start_scale, end_scale):
animator.Animation.__init__(self, 0.0, 1.0)
self._icon = icon
self.start_scale = start_scale
self.end_scale = end_scale
def next_frame(self, current):
d = (self.end_scale - self.start_scale) * current
self._icon.props.scale = self.start_scale + d
class TransitionBox(SpreadBox):
__gtype_name__ = 'SugarTransitionBox'
__gsignals__ = {
'completed': (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE, ([]))
}
def __init__(self):
SpreadBox.__init__(self, background_color=0xe2e2e2ff)
self._scale = units.XLARGE_ICON_SCALE
self._my_icon = MyIcon(self._scale)
self.set_center_item(self._my_icon)
self._animator = animator.Animator(0.3)
self._animator.connect('completed', self._animation_completed_cb)
def _animation_completed_cb(self, anim):
self.emit('completed')
def set_scale(self, scale):
self._animator.remove_all()
self._animator.add(_Animation(self._my_icon, self._scale, scale))
self._animator.start()
self._scale = scale