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Diffstat (limited to 'src/sugar/graphics/animator.py')
-rw-r--r-- | src/sugar/graphics/animator.py | 148 |
1 files changed, 0 insertions, 148 deletions
diff --git a/src/sugar/graphics/animator.py b/src/sugar/graphics/animator.py deleted file mode 100644 index 5d5b355..0000000 --- a/src/sugar/graphics/animator.py +++ /dev/null @@ -1,148 +0,0 @@ -# Copyright (C) 2007, Red Hat, Inc. -# -# This library is free software; you can redistribute it and/or -# modify it under the terms of the GNU Lesser General Public -# License as published by the Free Software Foundation; either -# version 2 of the License, or (at your option) any later version. -# -# This library 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 -# Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public -# License along with this library; if not, write to the -# Free Software Foundation, Inc., 59 Temple Place - Suite 330, -# Boston, MA 02111-1307, USA. - -""" -STABLE. -""" - -import time - -import gobject - -EASE_OUT_EXPO = 0 -EASE_IN_EXPO = 1 - -class Animator(gobject.GObject): - __gsignals__ = { - 'completed': (gobject.SIGNAL_RUN_FIRST, - gobject.TYPE_NONE, ([])), - } - - def __init__(self, duration, fps=20, easing=EASE_OUT_EXPO): - gobject.GObject.__init__(self) - self._animations = [] - self._duration = duration - self._interval = 1.0 / fps - self._easing = easing - self._timeout_sid = 0 - self._start_time = None - - def add(self, animation): - """ - Parameter - --------- - animation : - - """ - self._animations.append(animation) - - def remove_all(self): - """ - Parameters - ---------- - None : - - Returns - ------- - None : - - """ - self.stop() - self._animations = [] - - def start(self): - """ - Parameters - ---------- - None : - - Returns - ------- - None - - """ - if self._timeout_sid: - self.stop() - - self._start_time = time.time() - self._timeout_sid = gobject.timeout_add( - int(self._interval * 1000), self._next_frame_cb) - - def stop(self): - """ - Parameters - ---------- - None : - - Returns - ------- - None : - - """ - if self._timeout_sid: - gobject.source_remove(self._timeout_sid) - self._timeout_sid = 0 - self.emit('completed') - - def _next_frame_cb(self): - current_time = min(self._duration, time.time() - self._start_time) - current_time = max(current_time, 0.0) - - for animation in self._animations: - animation.do_frame(current_time, self._duration, self._easing) - - if current_time == self._duration: - self.stop() - return False - else: - return True - -class Animation(object): - def __init__(self, start, end): - self.start = start - self.end = end - - def do_frame(self, t, duration, easing): - """ - Parameters - ---------- - t: - - duration: - - easing: - - Returns - None: - - """ - start = self.start - change = self.end - self.start - - if t == duration: - # last frame - frame = self.end - else: - if easing == EASE_OUT_EXPO: - frame = change * (-pow(2, -10 * t / duration) + 1) + start - elif easing == EASE_IN_EXPO: - frame = change * pow(2, 10 * (t / duration - 1)) + start - - self.next_frame(frame) - - def next_frame(self, frame): - pass |