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| 1 /* | 1 /* |
| 2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 Google 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 are | 5 * modification, are permitted provided that the following conditions are |
| 6 * met: | 6 * met: |
| 7 * | 7 * |
| 8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
| 9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
| 10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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| 55 class GraphicsLayerFactory; | 55 class GraphicsLayerFactory; |
| 56 class IntRect; | 56 class IntRect; |
| 57 class IntSize; | 57 class IntSize; |
| 58 class LocalFrame; | 58 class LocalFrame; |
| 59 | 59 |
| 60 // Represents the visual viewport the user is currently seeing the page through.
This | 60 // Represents the visual viewport the user is currently seeing the page through.
This |
| 61 // class corresponds to the InnerViewport on the compositor. It is a ScrollableA
rea; it's | 61 // class corresponds to the InnerViewport on the compositor. It is a ScrollableA
rea; it's |
| 62 // offset is set through the GraphicsLayer <-> CC sync mechanisms. Its contents
is the page's | 62 // offset is set through the GraphicsLayer <-> CC sync mechanisms. Its contents
is the page's |
| 63 // main FrameView, which corresponds to the outer viewport. The inner viewport i
s always contained | 63 // main FrameView, which corresponds to the outer viewport. The inner viewport i
s always contained |
| 64 // in the outer viewport and can pan within it. | 64 // in the outer viewport and can pan within it. |
| 65 class CORE_EXPORT VisualViewport final : public NoBaseWillBeGarbageCollectedFina
lized<VisualViewport>, public GraphicsLayerClient, public ScrollableArea { | 65 class CORE_EXPORT VisualViewport final : public GarbageCollectedFinalized<Visual
Viewport>, public GraphicsLayerClient, public ScrollableArea { |
| 66 WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(VisualViewport); | 66 USING_GARBAGE_COLLECTED_MIXIN(VisualViewport); |
| 67 public: | 67 public: |
| 68 static PassOwnPtrWillBeRawPtr<VisualViewport> create(FrameHost& host) | 68 static RawPtr<VisualViewport> create(FrameHost& host) |
| 69 { | 69 { |
| 70 return adoptPtrWillBeNoop(new VisualViewport(host)); | 70 return (new VisualViewport(host)); |
| 71 } | 71 } |
| 72 ~VisualViewport() override; | 72 ~VisualViewport() override; |
| 73 | 73 |
| 74 DECLARE_VIRTUAL_TRACE(); | 74 DECLARE_VIRTUAL_TRACE(); |
| 75 | 75 |
| 76 void attachToLayerTree(GraphicsLayer*, GraphicsLayerFactory*); | 76 void attachToLayerTree(GraphicsLayer*, GraphicsLayerFactory*); |
| 77 GraphicsLayer* rootGraphicsLayer() | 77 GraphicsLayer* rootGraphicsLayer() |
| 78 { | 78 { |
| 79 return m_rootTransformLayer.get(); | 79 return m_rootTransformLayer.get(); |
| 80 } | 80 } |
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| 219 FloatPoint clampOffsetToBoundaries(const FloatPoint&); | 219 FloatPoint clampOffsetToBoundaries(const FloatPoint&); |
| 220 | 220 |
| 221 LocalFrame* mainFrame() const; | 221 LocalFrame* mainFrame() const; |
| 222 | 222 |
| 223 FrameHost& frameHost() const | 223 FrameHost& frameHost() const |
| 224 { | 224 { |
| 225 ASSERT(m_frameHost); | 225 ASSERT(m_frameHost); |
| 226 return *m_frameHost; | 226 return *m_frameHost; |
| 227 } | 227 } |
| 228 | 228 |
| 229 RawPtrWillBeMember<FrameHost> m_frameHost; | 229 Member<FrameHost> m_frameHost; |
| 230 OwnPtr<GraphicsLayer> m_rootTransformLayer; | 230 OwnPtr<GraphicsLayer> m_rootTransformLayer; |
| 231 OwnPtr<GraphicsLayer> m_innerViewportContainerLayer; | 231 OwnPtr<GraphicsLayer> m_innerViewportContainerLayer; |
| 232 OwnPtr<GraphicsLayer> m_overscrollElasticityLayer; | 232 OwnPtr<GraphicsLayer> m_overscrollElasticityLayer; |
| 233 OwnPtr<GraphicsLayer> m_pageScaleLayer; | 233 OwnPtr<GraphicsLayer> m_pageScaleLayer; |
| 234 OwnPtr<GraphicsLayer> m_innerViewportScrollLayer; | 234 OwnPtr<GraphicsLayer> m_innerViewportScrollLayer; |
| 235 OwnPtr<GraphicsLayer> m_overlayScrollbarHorizontal; | 235 OwnPtr<GraphicsLayer> m_overlayScrollbarHorizontal; |
| 236 OwnPtr<GraphicsLayer> m_overlayScrollbarVertical; | 236 OwnPtr<GraphicsLayer> m_overlayScrollbarVertical; |
| 237 OwnPtr<WebScrollbarLayer> m_webOverlayScrollbarHorizontal; | 237 OwnPtr<WebScrollbarLayer> m_webOverlayScrollbarHorizontal; |
| 238 OwnPtr<WebScrollbarLayer> m_webOverlayScrollbarVertical; | 238 OwnPtr<WebScrollbarLayer> m_webOverlayScrollbarVertical; |
| 239 | 239 |
| 240 // Offset of the visual viewport from the main frame's origin, in CSS pixels
. | 240 // Offset of the visual viewport from the main frame's origin, in CSS pixels
. |
| 241 FloatPoint m_offset; | 241 FloatPoint m_offset; |
| 242 float m_scale; | 242 float m_scale; |
| 243 IntSize m_size; | 243 IntSize m_size; |
| 244 float m_topControlsAdjustment; | 244 float m_topControlsAdjustment; |
| 245 float m_maxPageScale; | 245 float m_maxPageScale; |
| 246 bool m_trackPinchZoomStatsForPage; | 246 bool m_trackPinchZoomStatsForPage; |
| 247 }; | 247 }; |
| 248 | 248 |
| 249 } // namespace blink | 249 } // namespace blink |
| 250 | 250 |
| 251 #endif // VisualViewport_h | 251 #endif // VisualViewport_h |
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