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1 // Copyright 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CC_ANIMATION_TIMING_FUNCTION_H_ | 5 #ifndef CC_ANIMATION_TIMING_FUNCTION_H_ |
6 #define CC_ANIMATION_TIMING_FUNCTION_H_ | 6 #define CC_ANIMATION_TIMING_FUNCTION_H_ |
7 | 7 |
8 #include "cc/animation/animation_curve.h" | 8 #include "cc/animation/animation_curve.h" |
9 #include "cc/base/cc_export.h" | 9 #include "cc/base/cc_export.h" |
10 #include "ui/gfx/geometry/cubic_bezier.h" | 10 #include "ui/gfx/geometry/cubic_bezier.h" |
11 | 11 |
12 namespace cc { | 12 namespace cc { |
13 | 13 |
14 // See http://www.w3.org/TR/css3-transitions/. | 14 // See http://www.w3.org/TR/css3-transitions/. |
15 class CC_EXPORT TimingFunction : public FloatAnimationCurve { | 15 class CC_EXPORT TimingFunction : public FloatAnimationCurve { |
16 public: | 16 public: |
17 virtual ~TimingFunction(); | 17 virtual ~TimingFunction(); |
18 | 18 |
19 // Partial implementation of FloatAnimationCurve. | 19 // Partial implementation of FloatAnimationCurve. |
20 virtual double Duration() const OVERRIDE; | 20 virtual double Duration() const OVERRIDE; |
21 | 21 |
22 // The smallest and largest values returned by GetValue for inputs in | 22 // The smallest and largest values returned by GetValue for inputs in |
23 // [0, 1]. | 23 // [0, 1]. |
24 virtual void Range(float* min, float* max) const = 0; | 24 virtual void Range(float* min, float* max) const = 0; |
| 25 virtual float Velocity(double time) const = 0; |
25 | 26 |
26 protected: | 27 protected: |
27 TimingFunction(); | 28 TimingFunction(); |
28 | 29 |
29 private: | 30 private: |
30 DISALLOW_ASSIGN(TimingFunction); | 31 DISALLOW_ASSIGN(TimingFunction); |
31 }; | 32 }; |
32 | 33 |
33 class CC_EXPORT CubicBezierTimingFunction : public TimingFunction { | 34 class CC_EXPORT CubicBezierTimingFunction : public TimingFunction { |
34 public: | 35 public: |
35 static scoped_ptr<CubicBezierTimingFunction> Create(double x1, double y1, | 36 static scoped_ptr<CubicBezierTimingFunction> Create(double x1, double y1, |
36 double x2, double y2); | 37 double x2, double y2); |
37 virtual ~CubicBezierTimingFunction(); | 38 virtual ~CubicBezierTimingFunction(); |
38 | 39 |
39 // Partial implementation of FloatAnimationCurve. | 40 // Partial implementation of FloatAnimationCurve. |
40 virtual float GetValue(double time) const OVERRIDE; | 41 virtual float GetValue(double time) const OVERRIDE; |
41 virtual scoped_ptr<AnimationCurve> Clone() const OVERRIDE; | 42 virtual scoped_ptr<AnimationCurve> Clone() const OVERRIDE; |
42 | 43 |
43 virtual void Range(float* min, float* max) const OVERRIDE; | 44 virtual void Range(float* min, float* max) const OVERRIDE; |
| 45 virtual float Velocity(double time) const OVERRIDE; |
44 | 46 |
45 protected: | 47 protected: |
46 CubicBezierTimingFunction(double x1, double y1, double x2, double y2); | 48 CubicBezierTimingFunction(double x1, double y1, double x2, double y2); |
47 | 49 |
48 gfx::CubicBezier bezier_; | 50 gfx::CubicBezier bezier_; |
49 | 51 |
50 private: | 52 private: |
51 DISALLOW_ASSIGN(CubicBezierTimingFunction); | 53 DISALLOW_ASSIGN(CubicBezierTimingFunction); |
52 }; | 54 }; |
53 | 55 |
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79 public: | 81 public: |
80 static scoped_ptr<TimingFunction> Create(); | 82 static scoped_ptr<TimingFunction> Create(); |
81 | 83 |
82 private: | 84 private: |
83 DISALLOW_IMPLICIT_CONSTRUCTORS(EaseInOutTimingFunction); | 85 DISALLOW_IMPLICIT_CONSTRUCTORS(EaseInOutTimingFunction); |
84 }; | 86 }; |
85 | 87 |
86 } // namespace cc | 88 } // namespace cc |
87 | 89 |
88 #endif // CC_ANIMATION_TIMING_FUNCTION_H_ | 90 #endif // CC_ANIMATION_TIMING_FUNCTION_H_ |
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