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// Copyright 2014 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 ProgrammaticScrollAnimator_h
#define ProgrammaticScrollAnimator_h
#include "platform/geometry/FloatPoint.h"
#include "platform/heap/Handle.h"
#include "platform/scroll/ScrollAnimatorCompositorCoordinator.h"
#include "wtf/Allocator.h"
#include "wtf/Noncopyable.h"
#include "wtf/OwnPtr.h"
#include "wtf/PassOwnPtr.h"
namespace blink {
class ScrollableArea;
class WebCompositorAnimationTimeline;
class WebScrollOffsetAnimationCurve;
// Animator for fixed-destination scrolls, such as those triggered by
// CSSOM View scroll APIs.
class ProgrammaticScrollAnimator : public ScrollAnimatorCompositorCoordinator {
WTF_MAKE_NONCOPYABLE(ProgrammaticScrollAnimator);
USING_FAST_MALLOC_WILL_BE_REMOVED(ProgrammaticScrollAnimator);
public:
static PassOwnPtrWillBeRawPtr<ProgrammaticScrollAnimator> create(ScrollableArea*);
virtual ~ProgrammaticScrollAnimator();
void scrollToOffsetWithoutAnimation(const FloatPoint&);
void animateToOffset(FloatPoint);
// ScrollAnimatorCompositorCoordinator implementation.
void resetAnimationState() override;
ScrollableArea* scrollableArea() const override { return m_scrollableArea; }
void tickAnimation(double monotonicTime) override;
void updateCompositorAnimations() override;
void notifyCompositorAnimationFinished(int groupId) override;
void layerForCompositedScrollingDidChange(WebCompositorAnimationTimeline*) override;
DECLARE_TRACE();
private:
explicit ProgrammaticScrollAnimator(ScrollableArea*);
void notifyPositionChanged(const DoublePoint&);
RawPtrWillBeMember<ScrollableArea> m_scrollableArea;
OwnPtr<WebScrollOffsetAnimationCurve> m_animationCurve;
FloatPoint m_targetOffset;
double m_startTime;
};
} // namespace blink
#endif // ProgrammaticScrollAnimator_h
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