cc/animation/timing_function.h

   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.
   4
   5 #ifndef CC_ANIMATION_TIMING_FUNCTION_H_
   6 #define CC_ANIMATION_TIMING_FUNCTION_H_
   7
   8 #include "cc/animation/animation_curve.h"
   9 #include "cc/base/cc_export.h"
  10 #include "third_party/skia/include/core/SkScalar.h"
  11
  12 namespace cc {
  13
  14 // See http://www.w3.org/TR/css3-transitions/.
  15 class CC_EXPORT TimingFunction : public FloatAnimationCurve {
  16  public:
  17   virtual ~TimingFunction();
  18
  19   // Partial implementation of FloatAnimationCurve.
  20   virtual double Duration() const OVERRIDE;
  21
  22  protected:
  23   TimingFunction();
  24
  25  private:
  26   DISALLOW_ASSIGN(TimingFunction);
  27 };
  28
  29 class CC_EXPORT CubicBezierTimingFunction : public TimingFunction {
  30  public:
  31   static scoped_ptr<CubicBezierTimingFunction> Create(double x1, double y1,
  32                                                       double x2, double y2);
  33   virtual ~CubicBezierTimingFunction();
  34
  35   // Partial implementation of FloatAnimationCurve.
  36   virtual float GetValue(double time) const OVERRIDE;
  37   virtual scoped_ptr<AnimationCurve> Clone() const OVERRIDE;
  38
  39  protected:
  40   CubicBezierTimingFunction(double x1, double y1, double x2, double y2);
  41
  42   SkScalar x1_;
  43   SkScalar y1_;
  44   SkScalar x2_;
  45   SkScalar y2_;
  46
  47  private:
  48   DISALLOW_ASSIGN(CubicBezierTimingFunction);
  49 };
  50
  51 class CC_EXPORT EaseTimingFunction {
  52  public:
  53   static scoped_ptr<TimingFunction> Create();
  54
  55  private:
  56   DISALLOW_IMPLICIT_CONSTRUCTORS(EaseTimingFunction);
  57 };
  58
  59 class CC_EXPORT EaseInTimingFunction {
  60  public:
  61   static scoped_ptr<TimingFunction> Create();
  62
  63  private:
  64   DISALLOW_IMPLICIT_CONSTRUCTORS(EaseInTimingFunction);
  65 };
  66
  67 class CC_EXPORT EaseOutTimingFunction {
  68  public:
  69   static scoped_ptr<TimingFunction> Create();
  70
  71  private:
  72   DISALLOW_IMPLICIT_CONSTRUCTORS(EaseOutTimingFunction);
  73 };
  74
  75 class CC_EXPORT EaseInOutTimingFunction {
  76  public:
  77   static scoped_ptr<TimingFunction> Create();
  78
  79  private:
  80   DISALLOW_IMPLICIT_CONSTRUCTORS(EaseInOutTimingFunction);
  81 };
  82
  83 }  // namespace cc
  84
  85 #endif  // CC_ANIMATION_TIMING_FUNCTION_H_