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65 lines
2.7 KiB
C++
65 lines
2.7 KiB
C++
/*
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* Copyright (C) 2012 Google Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef WebActiveGestureAnimation_h
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#define WebActiveGestureAnimation_h
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#include "platform/PlatformExport.h"
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#include "wtf/Noncopyable.h"
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#include "wtf/OwnPtr.h"
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#include "wtf/PassOwnPtr.h"
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namespace blink {
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class WebGestureCurve;
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class WebGestureCurveTarget;
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// Implements a gesture animation (fling scroll, etc.) using a curve with a generic interface
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// to define the animation parameters as a function of time, and applies the animation
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// to a target, again via a generic interface. It is assumed that animate() is called
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// on a more-or-less regular basis by the owner.
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class PLATFORM_EXPORT WebActiveGestureAnimation {
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WTF_MAKE_NONCOPYABLE(WebActiveGestureAnimation);
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public:
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static PassOwnPtr<WebActiveGestureAnimation> createAtAnimationStart(PassOwnPtr<WebGestureCurve>, WebGestureCurveTarget*);
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static PassOwnPtr<WebActiveGestureAnimation> createWithTimeOffset(PassOwnPtr<WebGestureCurve>, WebGestureCurveTarget*, double startTime);
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~WebActiveGestureAnimation();
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bool animate(double time);
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private:
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// Assumes a valid WebGestureCurveTarget that outlives the animation.
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WebActiveGestureAnimation(PassOwnPtr<WebGestureCurve>, WebGestureCurveTarget*, double startTime, bool waitingForFirstTick);
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double m_startTime;
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bool m_waitingForFirstTick;
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OwnPtr<WebGestureCurve> m_curve;
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WebGestureCurveTarget* m_target;
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};
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} // namespace blink
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#endif
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