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/*
* Copyright (C) 2010, 2011 Apple 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 ScrollAnimatorMac_h
#define ScrollAnimatorMac_h
#if ENABLE(SMOOTH_SCROLLING)
#include "IntRect.h"
#include "FloatPoint.h"
#include "FloatSize.h"
#include "ScrollAnimator.h"
#include "ScrollElasticityController.h"
#include "Timer.h"
#include <wtf/RetainPtr.h>
OBJC_CLASS WebScrollAnimationHelperDelegate;
OBJC_CLASS WebScrollbarPainterControllerDelegate;
OBJC_CLASS WebScrollbarPainterDelegate;
typedef id ScrollbarPainterController;
#if !ENABLE(RUBBER_BANDING)
class ScrollElasticityControllerClient { };
#endif
namespace WebCore {
class Scrollbar;
class ScrollAnimatorMac : public ScrollAnimator, private ScrollElasticityControllerClient {
public:
ScrollAnimatorMac(ScrollableArea*);
virtual ~ScrollAnimatorMac();
void immediateScrollToPointForScrollAnimation(const FloatPoint& newPosition);
bool haveScrolledSincePageLoad() const { return m_haveScrolledSincePageLoad; }
void updateScrollerStyle();
bool scrollbarPaintTimerIsActive() const;
void startScrollbarPaintTimer();
void stopScrollbarPaintTimer();
void setVisibleScrollerThumbRect(const IntRect&);
private:
RetainPtr<id> m_scrollAnimationHelper;
RetainPtr<WebScrollAnimationHelperDelegate> m_scrollAnimationHelperDelegate;
RetainPtr<ScrollbarPainterController> m_scrollbarPainterController;
RetainPtr<WebScrollbarPainterControllerDelegate> m_scrollbarPainterControllerDelegate;
RetainPtr<WebScrollbarPainterDelegate> m_horizontalScrollbarPainterDelegate;
RetainPtr<WebScrollbarPainterDelegate> m_verticalScrollbarPainterDelegate;
void initialScrollbarPaintTimerFired(Timer<ScrollAnimatorMac>*);
Timer<ScrollAnimatorMac> m_initialScrollbarPaintTimer;
void sendContentAreaScrolledTimerFired(Timer<ScrollAnimatorMac>*);
Timer<ScrollAnimatorMac> m_sendContentAreaScrolledTimer;
FloatSize m_contentAreaScrolledTimerScrollDelta;
virtual bool scroll(ScrollbarOrientation, ScrollGranularity, float step, float multiplier);
virtual void scrollToOffsetWithoutAnimation(const FloatPoint&);
#if ENABLE(RUBBER_BANDING)
virtual bool handleWheelEvent(const PlatformWheelEvent&) OVERRIDE;
#endif
virtual void handleWheelEventPhase(PlatformWheelEventPhase) OVERRIDE;
virtual void cancelAnimations();
virtual void setIsActive();
virtual void notifyPositionChanged(const FloatSize& delta);
virtual void contentAreaWillPaint() const;
virtual void mouseEnteredContentArea() const;
virtual void mouseExitedContentArea() const;
virtual void mouseMovedInContentArea() const;
virtual void mouseEnteredScrollbar(Scrollbar*) const;
virtual void mouseExitedScrollbar(Scrollbar*) const;
virtual void willStartLiveResize();
virtual void contentsResized() const;
virtual void willEndLiveResize();
virtual void contentAreaDidShow() const;
virtual void contentAreaDidHide() const;
void didBeginScrollGesture() const;
void didEndScrollGesture() const;
void mayBeginScrollGesture() const;
virtual void finishCurrentScrollAnimations();
virtual void didAddVerticalScrollbar(Scrollbar*);
virtual void willRemoveVerticalScrollbar(Scrollbar*);
virtual void didAddHorizontalScrollbar(Scrollbar*);
virtual void willRemoveHorizontalScrollbar(Scrollbar*);
virtual bool shouldScrollbarParticipateInHitTesting(Scrollbar*);
virtual void notifyContentAreaScrolled(const FloatSize& delta) OVERRIDE;
// sendContentAreaScrolledSoon() will do the same work that sendContentAreaScrolled() does except
// it does it after a zero-delay timer fires. This will prevent us from updating overlay scrollbar
// information during layout.
void sendContentAreaScrolled(const FloatSize& scrollDelta);
void sendContentAreaScrolledSoon(const FloatSize& scrollDelta);
FloatPoint adjustScrollPositionIfNecessary(const FloatPoint&) const;
void immediateScrollTo(const FloatPoint&);
virtual bool isRubberBandInProgress() const OVERRIDE;
#if ENABLE(RUBBER_BANDING)
/// ScrollElasticityControllerClient member functions.
virtual IntSize stretchAmount() OVERRIDE;
virtual bool allowsHorizontalStretching() OVERRIDE;
virtual bool allowsVerticalStretching() OVERRIDE;
virtual bool pinnedInDirection(const FloatSize&) OVERRIDE;
virtual bool canScrollHorizontally() OVERRIDE;
virtual bool canScrollVertically() OVERRIDE;
virtual bool shouldRubberBandInDirection(ScrollDirection) OVERRIDE;
virtual WebCore::IntPoint absoluteScrollPosition() OVERRIDE;
virtual void immediateScrollByWithoutContentEdgeConstraints(const FloatSize&) OVERRIDE;
virtual void immediateScrollBy(const FloatSize&) OVERRIDE;
virtual void startSnapRubberbandTimer() OVERRIDE;
virtual void stopSnapRubberbandTimer() OVERRIDE;
bool pinnedInDirection(float deltaX, float deltaY);
void snapRubberBandTimerFired(Timer<ScrollAnimatorMac>*);
ScrollElasticityController m_scrollElasticityController;
Timer<ScrollAnimatorMac> m_snapRubberBandTimer;
#endif
bool m_haveScrolledSincePageLoad;
bool m_needsScrollerStyleUpdate;
IntRect m_visibleScrollerThumbRect;
};
} // namespace WebCore
#endif // ENABLE(SMOOTH_SCROLLING)
#endif // ScrollAnimatorMac_h
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