/* * Copyright (C) 2012 Google Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef CCAnimationCurve_h #define CCAnimationCurve_h #include "TransformationMatrix.h" #include <wtf/PassOwnPtr.h> namespace WebCore { class CCFloatAnimationCurve; class CCTransformAnimationCurve; class TransformOperations; // An animation curve is a function that returns a value given a time. // There are currently only two types of curve, float and transform. class CCAnimationCurve { public: enum Type { Float, Transform }; virtual ~CCAnimationCurve() { } virtual double duration() const = 0; virtual Type type() const = 0; virtual PassOwnPtr<CCAnimationCurve> clone() const = 0; const CCFloatAnimationCurve* toFloatAnimationCurve() const; const CCTransformAnimationCurve* toTransformAnimationCurve() const; }; class CCFloatAnimationCurve : public CCAnimationCurve { public: virtual ~CCFloatAnimationCurve() { } virtual float getValue(double t) const = 0; // Partial CCAnimation implementation. virtual Type type() const { return Float; } }; class CCTransformAnimationCurve : public CCAnimationCurve { public: virtual ~CCTransformAnimationCurve() { } virtual TransformationMatrix getValue(double t, const IntSize& layerSize) const = 0; // Partial CCAnimation implementation. virtual Type type() const { return Transform; } }; } // namespace WebCore #endif // CCAnimation_h