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pylint animator

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This commit is contained in:
Marco Pesenti Gritti 2008-04-19 00:14:11 +02:00
parent 4ad5928a74
commit 03e515b463
1 changed files with 10 additions and 9 deletions
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19
sugar/graphics/animator.py
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@ -28,13 +28,14 @@ class Animator(gobject.GObject):
gobject.TYPE_NONE, ([])), gobject.TYPE_NONE, ([])),
} }
def __init__(self, time, fps=20, easing=EASE_OUT_EXPO): def __init__(self, duration, fps=20, easing=EASE_OUT_EXPO):
gobject.GObject.__init__(self) gobject.GObject.__init__(self)
self._animations = [] self._animations = []
self._time = time self._duration = duration
self._interval = 1.0 / fps self._interval = 1.0 / fps
self._easing = easing self._easing = easing
self._timeout_sid = 0 self._timeout_sid = 0
self._start_time = None
def add(self, animation): def add(self, animation):
self._animations.append(animation) self._animations.append(animation)
@ -58,13 +59,13 @@ class Animator(gobject.GObject):
self.emit('completed') self.emit('completed')
def _next_frame_cb(self): def _next_frame_cb(self):
current_time = min(self._time, time.time() - self._start_time) current_time = min(self._duration, time.time() - self._start_time)
current_time = max(current_time, 0.0) current_time = max(current_time, 0.0)
for animation in self._animations: for animation in self._animations:
animation.do_frame(current_time, self._time, self._easing) animation.do_frame(current_time, self._duration, self._easing)
if current_time == self._time: if current_time == self._duration:
self.stop() self.stop()
return False return False
else: else:
@ -75,18 +76,18 @@ class Animation(object):
self.start = start self.start = start
self.end = end self.end = end
def do_frame(self, time, duration, easing): def do_frame(self, t, duration, easing):
start = self.start start = self.start
change = self.end - self.start change = self.end - self.start
if time == duration: if t == duration:
# last frame # last frame
frame = self.end frame = self.end
else: else:
if easing == EASE_OUT_EXPO: if easing == EASE_OUT_EXPO:
frame = change * (-pow(2, -10 * time/duration) + 1) + start; frame = change * (-pow(2, -10 * t / duration) + 1) + start
elif easing == EASE_IN_EXPO: elif easing == EASE_IN_EXPO:
frame = change * pow(2, 10 * (time / duration - 1)) + start; frame = change * pow(2, 10 * (t / duration - 1)) + start
self.next_frame(frame) self.next_frame(frame)