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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 "FloatPoint.h"
#include "FloatSize.h"
#include "ScrollAnimator.h"
#include "Timer.h"
#include "WebCoreSystemInterface.h"
#include <wtf/RetainPtr.h>
#ifdef __OBJC__
@class ScrollAnimationHelperDelegate;
@class ScrollbarPainterDelegate;
@class ScrollbarPainterControllerDelegate;
@class ScrollbarPainterDelegate;
#else
class ScrollAnimationHelperDelegate;
class ScrollbarPainterDelegate;
class ScrollbarPainterControllerDelegate;
class ScrollbarPainterDelegate;
#endif
namespace WebCore {
class Scrollbar;
class ScrollAnimatorMac : public ScrollAnimator {
public:
ScrollAnimatorMac(ScrollableArea*);
virtual ~ScrollAnimatorMac();
virtual bool scroll(ScrollbarOrientation, ScrollGranularity, float step, float multiplier);
virtual void scrollToOffsetWithoutAnimation(const FloatPoint&);
#if ENABLE(RUBBER_BANDING)
virtual void handleWheelEvent(PlatformWheelEvent&);
#if ENABLE(GESTURE_EVENTS)
virtual void handleGestureEvent(const PlatformGestureEvent&);
#endif
#endif
virtual void cancelAnimations();
void immediateScrollToPoint(const FloatPoint& newPosition);
void immediateScrollByDeltaX(float deltaX);
void immediateScrollByDeltaY(float deltaY);
void setIsDrawingIntoLayer(bool b) { m_drawingIntoLayer = b; }
bool isDrawingIntoLayer() const { return m_drawingIntoLayer; }
bool haveScrolledSincePageLoad() const { return m_haveScrolledSincePageLoad; }
#if USE(WK_SCROLLBAR_PAINTER)
bool scrollbarPaintTimerIsActive() const;
void startScrollbarPaintTimer();
void stopScrollbarPaintTimer();
#endif
private:
RetainPtr<id> m_scrollAnimationHelper;
RetainPtr<ScrollAnimationHelperDelegate> m_scrollAnimationHelperDelegate;
#if USE(WK_SCROLLBAR_PAINTER)
RetainPtr<WKScrollbarPainterControllerRef> m_scrollbarPainterController;
RetainPtr<ScrollbarPainterControllerDelegate> m_scrollbarPainterControllerDelegate;
RetainPtr<id> m_scrollbarPainterDelegate;
void initialScrollbarPaintTimerFired(Timer<ScrollAnimatorMac>*);
Timer<ScrollAnimatorMac> m_initialScrollbarPaintTimer;
#endif
virtual void notityPositionChanged();
virtual void contentAreaWillPaint() const;
virtual void mouseEnteredContentArea() const;
virtual void mouseExitedContentArea() const;
virtual void mouseMovedInContentArea() 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;
virtual void didAddVerticalScrollbar(Scrollbar*);
virtual void willRemoveVerticalScrollbar(Scrollbar*);
virtual void didAddHorizontalScrollbar(Scrollbar*);
virtual void willRemoveHorizontalScrollbar(Scrollbar*);
float adjustScrollXPositionIfNecessary(float) const;
float adjustScrollYPositionIfNecessary(float) const;
FloatPoint adjustScrollPositionIfNecessary(const FloatPoint&) const;
#if ENABLE(RUBBER_BANDING)
bool allowsVerticalStretching() const;
bool allowsHorizontalStretching() const;
bool pinnedInDirection(float deltaX, float deltaY);
void snapRubberBand();
void snapRubberBandTimerFired(Timer<ScrollAnimatorMac>*);
void smoothScrollWithEvent(PlatformWheelEvent&);
void beginScrollGesture();
void endScrollGesture();
bool m_inScrollGesture;
bool m_momentumScrollInProgress;
bool m_ignoreMomentumScrolls;
CFTimeInterval m_lastMomemtumScrollTimestamp;
FloatSize m_overflowScrollDelta;
FloatSize m_stretchScrollForce;
FloatSize m_momentumVelocity;
// Rubber band state.
CFTimeInterval m_startTime;
FloatSize m_startStretch;
FloatPoint m_origOrigin;
FloatSize m_origVelocity;
Timer<ScrollAnimatorMac> m_snapRubberBandTimer;
#endif
bool m_drawingIntoLayer;
bool m_haveScrolledSincePageLoad;
};
} // namespace WebCore
#endif // ENABLE(SMOOTH_SCROLLING)
#endif // ScrollAnimatorMac_h
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