2 * Copyright (C) 2010, 2011 Apple Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
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26 #ifndef ScrollAnimatorMac_h
27 #define ScrollAnimatorMac_h
29 #if ENABLE(SMOOTH_SCROLLING)
32 #include "FloatPoint.h"
33 #include "FloatSize.h"
34 #include "ScrollAnimator.h"
35 #include "ScrollElasticityController.h"
37 #include <wtf/RetainPtr.h>
40 @class WebScrollAnimationHelperDelegate;
41 @class WebScrollbarPainterControllerDelegate;
42 @class WebScrollbarPainterDelegate;
44 class WebScrollAnimationHelperDelegate;
45 class WebScrollbarPainterControllerDelegate;
46 class WebScrollbarPainterDelegate;
49 #if USE(SCROLLBAR_PAINTER)
50 typedef id ScrollbarPainterController;
53 #if !ENABLE(RUBBER_BANDING)
54 class ScrollElasticityControllerClient { };
61 class ScrollAnimatorMac : public ScrollAnimator, private ScrollElasticityControllerClient {
64 ScrollAnimatorMac(ScrollableArea*);
65 virtual ~ScrollAnimatorMac();
67 virtual bool scroll(ScrollbarOrientation, ScrollGranularity, float step, float multiplier);
68 virtual void scrollToOffsetWithoutAnimation(const FloatPoint&);
70 #if ENABLE(RUBBER_BANDING)
71 virtual bool handleWheelEvent(const PlatformWheelEvent&) OVERRIDE;
72 #if ENABLE(GESTURE_EVENTS)
73 virtual void handleGestureEvent(const PlatformGestureEvent&);
77 virtual void cancelAnimations();
79 void immediateScrollToPoint(const FloatPoint& newPosition);
80 void immediateScrollByDeltaX(float deltaX);
81 void immediateScrollByDeltaY(float deltaY);
83 void immediateScrollToPointForScrollAnimation(const FloatPoint& newPosition);
85 void setIsDrawingIntoLayer(bool b) { m_drawingIntoLayer = b; }
86 bool isDrawingIntoLayer() const { return m_drawingIntoLayer; }
88 bool haveScrolledSincePageLoad() const { return m_haveScrolledSincePageLoad; }
90 virtual void setIsActive();
92 #if USE(SCROLLBAR_PAINTER)
93 void updateScrollerStyle();
95 bool scrollbarPaintTimerIsActive() const;
96 void startScrollbarPaintTimer();
97 void stopScrollbarPaintTimer();
100 void setVisibleScrollerThumbRect(const IntRect&);
103 RetainPtr<id> m_scrollAnimationHelper;
104 RetainPtr<WebScrollAnimationHelperDelegate> m_scrollAnimationHelperDelegate;
106 #if USE(SCROLLBAR_PAINTER)
107 RetainPtr<ScrollbarPainterController> m_scrollbarPainterController;
108 RetainPtr<WebScrollbarPainterControllerDelegate> m_scrollbarPainterControllerDelegate;
109 RetainPtr<WebScrollbarPainterDelegate> m_scrollbarPainterDelegate;
111 void initialScrollbarPaintTimerFired(Timer<ScrollAnimatorMac>*);
112 Timer<ScrollAnimatorMac> m_initialScrollbarPaintTimer;
115 virtual void notifyPositionChanged();
116 virtual void contentAreaWillPaint() const;
117 virtual void mouseEnteredContentArea() const;
118 virtual void mouseExitedContentArea() const;
119 virtual void mouseMovedInContentArea() const;
120 virtual void mouseEnteredScrollbar(Scrollbar*) const;
121 virtual void mouseExitedScrollbar(Scrollbar*) const;
122 virtual void willStartLiveResize();
123 virtual void contentsResized() const;
124 virtual void willEndLiveResize();
125 virtual void contentAreaDidShow() const;
126 virtual void contentAreaDidHide() const;
127 void didBeginScrollGesture() const;
128 void didEndScrollGesture() const;
130 virtual void didAddVerticalScrollbar(Scrollbar*);
131 virtual void willRemoveVerticalScrollbar(Scrollbar*);
132 virtual void didAddHorizontalScrollbar(Scrollbar*);
133 virtual void willRemoveHorizontalScrollbar(Scrollbar*);
135 void setNeedsScrollerStyleUpdate(bool needsUpdate) { m_needsScrollerStyleUpdate = needsUpdate; }
136 bool needsScrollerStyleUpdate() const { return m_needsScrollerStyleUpdate; }
138 float adjustScrollXPositionIfNecessary(float) const;
139 float adjustScrollYPositionIfNecessary(float) const;
140 FloatPoint adjustScrollPositionIfNecessary(const FloatPoint&) const;
142 #if ENABLE(RUBBER_BANDING)
143 /// ScrollElasticityControllerClient member functions.
144 virtual bool isHorizontalScrollerPinnedToMinimumPosition() OVERRIDE;
145 virtual bool isHorizontalScrollerPinnedToMaximumPosition() OVERRIDE;
146 virtual IntSize stretchAmount() OVERRIDE;
147 virtual void startSnapRubberbandTimer() OVERRIDE;
148 virtual void stopSnapRubberbandTimer() OVERRIDE;
150 bool allowsVerticalStretching() const;
151 bool allowsHorizontalStretching() const;
152 bool pinnedInDirection(float deltaX, float deltaY);
153 void snapRubberBand();
154 void snapRubberBandTimerFired(Timer<ScrollAnimatorMac>*);
155 void smoothScrollWithEvent(const PlatformWheelEvent&);
156 void beginScrollGesture();
157 void endScrollGesture();
159 ScrollElasticityController m_scrollElasticityController;
160 Timer<ScrollAnimatorMac> m_snapRubberBandTimer;
163 bool m_drawingIntoLayer;
164 bool m_haveScrolledSincePageLoad;
165 bool m_needsScrollerStyleUpdate;
166 IntRect m_visibleScrollerThumbRect;
169 } // namespace WebCore
171 #endif // ENABLE(SMOOTH_SCROLLING)
173 #endif // ScrollAnimatorMac_h