1 // Copyright 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.
5 #ifndef CC_ANIMATION_TIMING_FUNCTION_H_
6 #define CC_ANIMATION_TIMING_FUNCTION_H_
8 #include "cc/animation/animation_curve.h"
9 #include "cc/base/cc_export.h"
10 #include "third_party/skia/include/core/SkScalar.h"
14 // See http://www.w3.org/TR/css3-transitions/.
15 class CC_EXPORT TimingFunction : public FloatAnimationCurve {
17 virtual ~TimingFunction();
19 // Partial implementation of FloatAnimationCurve.
20 virtual double Duration() const OVERRIDE;
22 // The smallest and largest values returned by GetValue for inputs in
24 virtual void Range(float* min, float* max) const = 0;
30 DISALLOW_ASSIGN(TimingFunction);
33 class CC_EXPORT CubicBezierTimingFunction : public TimingFunction {
35 static scoped_ptr<CubicBezierTimingFunction> Create(double x1, double y1,
36 double x2, double y2);
37 virtual ~CubicBezierTimingFunction();
39 // Partial implementation of FloatAnimationCurve.
40 virtual float GetValue(double time) const OVERRIDE;
41 virtual scoped_ptr<AnimationCurve> Clone() const OVERRIDE;
43 virtual void Range(float* min, float* max) const OVERRIDE;
46 CubicBezierTimingFunction(double x1, double y1, double x2, double y2);
54 DISALLOW_ASSIGN(CubicBezierTimingFunction);
57 class CC_EXPORT EaseTimingFunction {
59 static scoped_ptr<TimingFunction> Create();
62 DISALLOW_IMPLICIT_CONSTRUCTORS(EaseTimingFunction);
65 class CC_EXPORT EaseInTimingFunction {
67 static scoped_ptr<TimingFunction> Create();
70 DISALLOW_IMPLICIT_CONSTRUCTORS(EaseInTimingFunction);
73 class CC_EXPORT EaseOutTimingFunction {
75 static scoped_ptr<TimingFunction> Create();
78 DISALLOW_IMPLICIT_CONSTRUCTORS(EaseOutTimingFunction);
81 class CC_EXPORT EaseInOutTimingFunction {
83 static scoped_ptr<TimingFunction> Create();
86 DISALLOW_IMPLICIT_CONSTRUCTORS(EaseInOutTimingFunction);
91 #endif // CC_ANIMATION_TIMING_FUNCTION_H_