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// Copyright 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.
#ifndef CC_TIMING_FUNCTION_H_
#define CC_TIMING_FUNCTION_H_
#include "cc/animation/animation_curve.h"
#include "cc/base/cc_export.h"
#include "third_party/skia/include/core/SkScalar.h"
namespace cc {
// See http://www.w3.org/TR/css3-transitions/.
class CC_EXPORT TimingFunction : public FloatAnimationCurve {
public:
virtual ~TimingFunction();
// Partial implementation of FloatAnimationCurve.
virtual double Duration() const OVERRIDE;
protected:
TimingFunction();
};
class CC_EXPORT CubicBezierTimingFunction : public TimingFunction {
public:
static scoped_ptr<CubicBezierTimingFunction> create(double x1, double y1,
double x2, double y2);
virtual ~CubicBezierTimingFunction();
// Partial implementation of FloatAnimationCurve.
virtual float GetValue(double time) const OVERRIDE;
virtual scoped_ptr<AnimationCurve> Clone() const OVERRIDE;
protected:
CubicBezierTimingFunction(double x1, double y1, double x2, double y2);
SkScalar x1_;
SkScalar y1_;
SkScalar x2_;
SkScalar y2_;
};
class CC_EXPORT EaseTimingFunction {
public:
static scoped_ptr<TimingFunction> create();
};
class CC_EXPORT EaseInTimingFunction {
public:
static scoped_ptr<TimingFunction> create();
};
class CC_EXPORT EaseOutTimingFunction {
public:
static scoped_ptr<TimingFunction> create();
};
class CC_EXPORT EaseInOutTimingFunction {
public:
static scoped_ptr<TimingFunction> create();
};
} // namespace cc
#endif // CC_TIMING_FUNCTION_H_
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