Moving GraphicsContext and dependencies from core to platform.

Source/core/platform/mac/ScrollAnimatorMac.h

-/*
- * 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
-
-#include "core/platform/ScrollAnimator.h"
-#include "core/platform/mac/ScrollElasticityController.h"
-#include "platform/Timer.h"
-#include "platform/geometry/FloatPoint.h"
-#include "platform/geometry/FloatSize.h"
-#include "platform/geometry/IntRect.h"
-#include "wtf/RetainPtr.h"
-
-OBJC_CLASS WebScrollAnimationHelperDelegate;
-OBJC_CLASS WebScrollbarPainterControllerDelegate;
-OBJC_CLASS WebScrollbarPainterDelegate;
-
-typedef id ScrollbarPainterController;
-
-#if !USE(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 sendContentAreaScrolledSoon(const FloatSize& scrollDelta);
-
-    void setVisibleScrollerThumbRect(const IntRect&);
-
-    static bool canUseCoordinatedScrollbar();
-
-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 USE(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;
-
-    FloatPoint adjustScrollPositionIfNecessary(const FloatPoint&) const;
-
-    void immediateScrollTo(const FloatPoint&);
-
-    virtual bool isRubberBandInProgress() const OVERRIDE;
-
-#if USE(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 // ScrollAnimatorMac_h