1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "ui/compositor/float_animation_curve_adapter.h"
6
7 namespace ui {
8
FloatAnimationCurveAdapter(gfx::Tween::Type tween_type,float initial_value,float target_value,base::TimeDelta duration)9 FloatAnimationCurveAdapter::FloatAnimationCurveAdapter(
10 gfx::Tween::Type tween_type,
11 float initial_value,
12 float target_value,
13 base::TimeDelta duration)
14 : tween_type_(tween_type),
15 initial_value_(initial_value),
16 target_value_(target_value),
17 duration_(duration) {
18 }
19
Duration() const20 double FloatAnimationCurveAdapter::Duration() const {
21 return duration_.InSecondsF();
22 }
23
Clone() const24 scoped_ptr<cc::AnimationCurve> FloatAnimationCurveAdapter::Clone() const {
25 scoped_ptr<FloatAnimationCurveAdapter> to_return(
26 new FloatAnimationCurveAdapter(tween_type_,
27 initial_value_,
28 target_value_,
29 duration_));
30 return to_return.PassAs<cc::AnimationCurve>();
31 }
32
GetValue(double t) const33 float FloatAnimationCurveAdapter::GetValue(double t) const {
34 if (t >= duration_.InSecondsF())
35 return target_value_;
36 if (t <= 0.0)
37 return initial_value_;
38 double progress = t / duration_.InSecondsF();
39 return gfx::Tween::FloatValueBetween(
40 gfx::Tween::CalculateValue(tween_type_, progress),
41 initial_value_,
42 target_value_);
43 }
44
45 } // namespace ui
46