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| 1 /* | 1 /* |
| 2 * Copyright (C) 2003, 2009, 2012 Apple Inc. All rights reserved. | 2 * Copyright (C) 2003, 2009, 2012 Apple Inc. All rights reserved. |
| 3 * | 3 * |
| 4 * Portions are Copyright (C) 1998 Netscape Communications Corporation. | 4 * Portions are Copyright (C) 1998 Netscape Communications Corporation. |
| 5 * | 5 * |
| 6 * Other contributors: | 6 * Other contributors: |
| 7 * Robert O'Callahan <roc+@cs.cmu.edu> | 7 * Robert O'Callahan <roc+@cs.cmu.edu> |
| 8 * David Baron <dbaron@fas.harvard.edu> | 8 * David Baron <dbaron@fas.harvard.edu> |
| 9 * Christian Biesinger <cbiesinger@web.de> | 9 * Christian Biesinger <cbiesinger@web.de> |
| 10 * Randall Jesup <rjesup@wgate.com> | 10 * Randall Jesup <rjesup@wgate.com> |
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| 165 | 165 |
| 166 ~PaintLayerScrollableArea() override; | 166 ~PaintLayerScrollableArea() override; |
| 167 void dispose(); | 167 void dispose(); |
| 168 | 168 |
| 169 bool hasHorizontalScrollbar() const { return horizontalScrollbar(); } | 169 bool hasHorizontalScrollbar() const { return horizontalScrollbar(); } |
| 170 bool hasVerticalScrollbar() const { return verticalScrollbar(); } | 170 bool hasVerticalScrollbar() const { return verticalScrollbar(); } |
| 171 | 171 |
| 172 Scrollbar* horizontalScrollbar() const override { return m_scrollbarManager.
horizontalScrollbar(); } | 172 Scrollbar* horizontalScrollbar() const override { return m_scrollbarManager.
horizontalScrollbar(); } |
| 173 Scrollbar* verticalScrollbar() const override { return m_scrollbarManager.ve
rticalScrollbar(); } | 173 Scrollbar* verticalScrollbar() const override { return m_scrollbarManager.ve
rticalScrollbar(); } |
| 174 | 174 |
| 175 HostWindow* hostWindow() const override; | 175 HostWindow* getHostWindow() const override; |
| 176 | 176 |
| 177 // For composited scrolling, we allocate an extra GraphicsLayer to hold | 177 // For composited scrolling, we allocate an extra GraphicsLayer to hold |
| 178 // onto the scrolling content. The layer can be shifted on the GPU and | 178 // onto the scrolling content. The layer can be shifted on the GPU and |
| 179 // composited at little cost. | 179 // composited at little cost. |
| 180 // Note that this is done in CompositedLayerMapping, this function being | 180 // Note that this is done in CompositedLayerMapping, this function being |
| 181 // only a helper. | 181 // only a helper. |
| 182 GraphicsLayer* layerForScrolling() const override; | 182 GraphicsLayer* layerForScrolling() const override; |
| 183 | 183 |
| 184 // GraphicsLayers for the scrolling components. | 184 // GraphicsLayers for the scrolling components. |
| 185 // | 185 // |
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| 325 PaintLayer* layer() const; | 325 PaintLayer* layer() const; |
| 326 | 326 |
| 327 LayoutScrollbarPart* resizer() const override { return m_resizer; } | 327 LayoutScrollbarPart* resizer() const override { return m_resizer; } |
| 328 | 328 |
| 329 const IntPoint& cachedOverlayScrollbarOffset() { return m_cachedOverlayScrol
lbarOffset; } | 329 const IntPoint& cachedOverlayScrollbarOffset() { return m_cachedOverlayScrol
lbarOffset; } |
| 330 void setCachedOverlayScrollbarOffset(const IntPoint& offset) { m_cachedOverl
ayScrollbarOffset = offset; } | 330 void setCachedOverlayScrollbarOffset(const IntPoint& offset) { m_cachedOverl
ayScrollbarOffset = offset; } |
| 331 | 331 |
| 332 IntRect rectForHorizontalScrollbar(const IntRect& borderBoxRect) const; | 332 IntRect rectForHorizontalScrollbar(const IntRect& borderBoxRect) const; |
| 333 IntRect rectForVerticalScrollbar(const IntRect& borderBoxRect) const; | 333 IntRect rectForVerticalScrollbar(const IntRect& borderBoxRect) const; |
| 334 | 334 |
| 335 Widget* widget() override; | 335 Widget* getWidget() override; |
| 336 ScrollAnchor& scrollAnchor() { return m_scrollAnchor; } | 336 ScrollAnchor& scrollAnchor() { return m_scrollAnchor; } |
| 337 bool isPaintLayerScrollableArea() const override { return true; } | 337 bool isPaintLayerScrollableArea() const override { return true; } |
| 338 | 338 |
| 339 bool shouldRebuildHorizontalScrollbarLayer() const { return m_rebuildHorizon
talScrollbarLayer; } | 339 bool shouldRebuildHorizontalScrollbarLayer() const { return m_rebuildHorizon
talScrollbarLayer; } |
| 340 bool shouldRebuildVerticalScrollbarLayer() const { return m_rebuildVerticalS
crollbarLayer; } | 340 bool shouldRebuildVerticalScrollbarLayer() const { return m_rebuildVerticalS
crollbarLayer; } |
| 341 void resetRebuildScrollbarLayerFlags(); | 341 void resetRebuildScrollbarLayerFlags(); |
| 342 | 342 |
| 343 DECLARE_VIRTUAL_TRACE(); | 343 DECLARE_VIRTUAL_TRACE(); |
| 344 | 344 |
| 345 private: | 345 private: |
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| 426 #endif | 426 #endif |
| 427 }; | 427 }; |
| 428 | 428 |
| 429 DEFINE_TYPE_CASTS(PaintLayerScrollableArea, ScrollableArea, scrollableArea, | 429 DEFINE_TYPE_CASTS(PaintLayerScrollableArea, ScrollableArea, scrollableArea, |
| 430 scrollableArea->isPaintLayerScrollableArea(), | 430 scrollableArea->isPaintLayerScrollableArea(), |
| 431 scrollableArea.isPaintLayerScrollableArea()); | 431 scrollableArea.isPaintLayerScrollableArea()); |
| 432 | 432 |
| 433 } // namespace blink | 433 } // namespace blink |
| 434 | 434 |
| 435 #endif // LayerScrollableArea_h | 435 #endif // LayerScrollableArea_h |
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