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1 /* | 1 /* |
2 * Copyright (C) 2011 Apple Inc. All rights reserved. | 2 * Copyright (C) 2011 Apple Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF | 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
23 * THE POSSIBILITY OF SUCH DAMAGE. | 23 * THE POSSIBILITY OF SUCH DAMAGE. |
24 */ | 24 */ |
25 | 25 |
26 #ifndef ScrollingCoordinator_h | 26 #ifndef ScrollingCoordinator_h |
27 #define ScrollingCoordinator_h | 27 #define ScrollingCoordinator_h |
28 | 28 |
29 #include "IntRect.h" | 29 #include "IntRect.h" |
30 #include "LayoutRect.h" | 30 #include "LayoutRect.h" |
31 #include "PlatformWheelEvent.h" | 31 #include "PlatformWheelEvent.h" |
| 32 #include "RenderObject.h" |
32 #include "ScrollTypes.h" | 33 #include "ScrollTypes.h" |
33 #include "Timer.h" | 34 #include "Timer.h" |
34 #include <wtf/Forward.h> | 35 #include <wtf/Forward.h> |
35 | 36 |
36 #if ENABLE(THREADED_SCROLLING) | 37 #if ENABLE(THREADED_SCROLLING) |
37 #include <wtf/HashMap.h> | 38 #include <wtf/HashMap.h> |
38 #include <wtf/ThreadSafeRefCounted.h> | 39 #include <wtf/ThreadSafeRefCounted.h> |
39 #include <wtf/Threading.h> | 40 #include <wtf/Threading.h> |
40 #endif | 41 #endif |
41 | 42 |
42 #if PLATFORM(MAC) | 43 #if PLATFORM(MAC) |
43 #include <wtf/RetainPtr.h> | 44 #include <wtf/RetainPtr.h> |
44 #endif | 45 #endif |
45 | 46 |
46 namespace WebCore { | 47 namespace WebCore { |
47 | 48 |
48 typedef unsigned MainThreadScrollingReasons; | 49 typedef unsigned MainThreadScrollingReasons; |
49 typedef uint64_t ScrollingNodeID; | 50 typedef uint64_t ScrollingNodeID; |
50 | 51 |
51 enum ScrollingNodeType { ScrollingNode, FixedNode }; | 52 enum ScrollingNodeType { ScrollingNode, FixedNode }; |
52 | 53 |
| 54 class Document; |
53 class Frame; | 55 class Frame; |
54 class FrameView; | 56 class FrameView; |
55 class GraphicsLayer; | 57 class GraphicsLayer; |
56 class Page; | 58 class Page; |
57 class Region; | 59 class Region; |
58 class ScrollableArea; | 60 class ScrollableArea; |
59 class ViewportConstraints; | 61 class ViewportConstraints; |
60 | 62 |
61 #if ENABLE(THREADED_SCROLLING) | 63 #if ENABLE(THREADED_SCROLLING) |
62 class ScrollingTree; | 64 class ScrollingTree; |
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142 MainThreadScrollingReasons mainThreadScrollingReasons() const; | 144 MainThreadScrollingReasons mainThreadScrollingReasons() const; |
143 bool shouldUpdateScrollLayerPositionOnMainThread() const { return mainThread
ScrollingReasons() != 0; } | 145 bool shouldUpdateScrollLayerPositionOnMainThread() const { return mainThread
ScrollingReasons() != 0; } |
144 | 146 |
145 // These virtual functions are currently unique to Chromium's WebLayer appro
ach. Their meaningful | 147 // These virtual functions are currently unique to Chromium's WebLayer appro
ach. Their meaningful |
146 // implementations are in ScrollingCoordinatorChromium. | 148 // implementations are in ScrollingCoordinatorChromium. |
147 virtual void frameViewHorizontalScrollbarLayerDidChange(FrameView*, Graphics
Layer*) { } | 149 virtual void frameViewHorizontalScrollbarLayerDidChange(FrameView*, Graphics
Layer*) { } |
148 virtual void frameViewVerticalScrollbarLayerDidChange(FrameView*, GraphicsLa
yer*) { } | 150 virtual void frameViewVerticalScrollbarLayerDidChange(FrameView*, GraphicsLa
yer*) { } |
149 virtual void scrollableAreaScrollLayerDidChange(ScrollableArea*, GraphicsLay
er*) { } | 151 virtual void scrollableAreaScrollLayerDidChange(ScrollableArea*, GraphicsLay
er*) { } |
150 virtual void setLayerIsContainerForFixedPositionLayers(GraphicsLayer*, bool)
{ } | 152 virtual void setLayerIsContainerForFixedPositionLayers(GraphicsLayer*, bool)
{ } |
151 virtual void setLayerIsFixedToContainerLayer(GraphicsLayer*, bool) { } | 153 virtual void setLayerIsFixedToContainerLayer(GraphicsLayer*, bool) { } |
| 154 virtual void touchEventTargetRectsDidChange(const Document*) { } |
| 155 |
| 156 #if ENABLE(TOUCH_EVENT_TRACKING) |
| 157 void computeAbsoluteTouchEventTargetRects(const Document*, Vector<IntRect>&)
; |
| 158 #endif |
152 | 159 |
153 static String mainThreadScrollingReasonsAsText(MainThreadScrollingReasons); | 160 static String mainThreadScrollingReasonsAsText(MainThreadScrollingReasons); |
154 String mainThreadScrollingReasonsAsText() const; | 161 String mainThreadScrollingReasonsAsText() const; |
155 | 162 |
156 protected: | 163 protected: |
157 explicit ScrollingCoordinator(Page*); | 164 explicit ScrollingCoordinator(Page*); |
158 | 165 |
159 Region computeNonFastScrollableRegion(Frame*, const IntPoint& frameLocation)
; | 166 Region computeNonFastScrollableRegion(Frame*, const IntPoint& frameLocation)
; |
160 unsigned computeCurrentWheelEventHandlerCount(); | 167 unsigned computeCurrentWheelEventHandlerCount(); |
161 GraphicsLayer* scrollLayerForFrameView(FrameView*); | 168 GraphicsLayer* scrollLayerForFrameView(FrameView*); |
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175 IntPoint m_scheduledUpdateScrollPosition; | 182 IntPoint m_scheduledUpdateScrollPosition; |
176 bool m_scheduledUpdateIsProgrammaticScroll; | 183 bool m_scheduledUpdateIsProgrammaticScroll; |
177 SetOrSyncScrollingLayerPosition m_scheduledScrollingLayerPositionAction; | 184 SetOrSyncScrollingLayerPosition m_scheduledScrollingLayerPositionAction; |
178 | 185 |
179 bool m_forceMainThreadScrollLayerPositionUpdates; | 186 bool m_forceMainThreadScrollLayerPositionUpdates; |
180 }; | 187 }; |
181 | 188 |
182 } // namespace WebCore | 189 } // namespace WebCore |
183 | 190 |
184 #endif // ScrollingCoordinator_h | 191 #endif // ScrollingCoordinator_h |
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