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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/compositor/float_animation_curve_adapter.h"
namespace ui {
FloatAnimationCurveAdapter::FloatAnimationCurveAdapter(
Tween::Type tween_type,
float initial_value,
float target_value,
base::TimeDelta duration)
: tween_type_(tween_type),
initial_value_(initial_value),
target_value_(target_value),
duration_(duration) {
}
double FloatAnimationCurveAdapter::duration() const {
return duration_.InSecondsF();
}
scoped_ptr<cc::AnimationCurve> FloatAnimationCurveAdapter::clone() const {
scoped_ptr<FloatAnimationCurveAdapter> to_return(
new FloatAnimationCurveAdapter(tween_type_,
initial_value_,
target_value_,
duration_));
return to_return.PassAs<cc::AnimationCurve>();
}
float FloatAnimationCurveAdapter::getValue(double t) const {
if (t >= duration_.InSecondsF())
return target_value_;
if (t <= 0.0)
return initial_value_;
double progress = t / duration_.InSecondsF();
return Tween::ValueBetween(Tween::CalculateValue(tween_type_, progress),
initial_value_,
target_value_);
}
} // namespace ui
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