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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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34 * applicable instead of those above. If you wish to allow use of your | 34 * applicable instead of those above. If you wish to allow use of your |
35 * version of this file only under the terms of one of those two | 35 * version of this file only under the terms of one of those two |
36 * licenses (the MPL or the GPL) and not to allow others to use your | 36 * licenses (the MPL or the GPL) and not to allow others to use your |
37 * version of this file under the LGPL, indicate your decision by | 37 * version of this file under the LGPL, indicate your decision by |
38 * deletingthe provisions above and replace them with the notice and | 38 * deletingthe provisions above and replace them with the notice and |
39 * other provisions required by the MPL or the GPL, as the case may be. | 39 * other provisions required by the MPL or the GPL, as the case may be. |
40 * If you do not delete the provisions above, a recipient may use your | 40 * If you do not delete the provisions above, a recipient may use your |
41 * version of this file under any of the LGPL, the MPL or the GPL. | 41 * version of this file under any of the LGPL, the MPL or the GPL. |
42 */ | 42 */ |
43 | 43 |
44 #ifndef RenderLayerScrollableArea_h | 44 #ifndef LayerScrollableArea_h |
45 #define RenderLayerScrollableArea_h | 45 #define LayerScrollableArea_h |
46 | 46 |
47 | 47 |
48 #include "core/rendering/LayerFragment.h" | 48 #include "core/layout/LayerFragment.h" |
49 #include "core/rendering/RenderBox.h" | 49 #include "core/rendering/RenderBox.h" |
50 | 50 |
51 #include "platform/scroll/ScrollableArea.h" | 51 #include "platform/scroll/ScrollableArea.h" |
52 | 52 |
53 namespace blink { | 53 namespace blink { |
54 | 54 |
55 enum ResizerHitTestType { | 55 enum ResizerHitTestType { |
56 ResizerForPointer, | 56 ResizerForPointer, |
57 ResizerForTouch | 57 ResizerForTouch |
58 }; | 58 }; |
59 | 59 |
60 class PlatformEvent; | 60 class PlatformEvent; |
61 class RenderBox; | 61 class RenderBox; |
62 class RenderLayer; | 62 class Layer; |
63 class RenderScrollbarPart; | 63 class RenderScrollbarPart; |
64 | 64 |
65 class RenderLayerScrollableArea final : public ScrollableArea { | 65 class LayerScrollableArea final : public ScrollableArea { |
66 friend class Internals; | 66 friend class Internals; |
67 | 67 |
68 public: | 68 public: |
69 // FIXME: We should pass in the RenderBox but this opens a window | 69 // FIXME: We should pass in the RenderBox but this opens a window |
70 // for crashers during RenderLayer setup (see crbug.com/368062). | 70 // for crashers during Layer setup (see crbug.com/368062). |
71 RenderLayerScrollableArea(RenderLayer&); | 71 LayerScrollableArea(Layer&); |
72 virtual ~RenderLayerScrollableArea(); | 72 virtual ~LayerScrollableArea(); |
73 | 73 |
74 bool hasHorizontalScrollbar() const { return horizontalScrollbar(); } | 74 bool hasHorizontalScrollbar() const { return horizontalScrollbar(); } |
75 bool hasVerticalScrollbar() const { return verticalScrollbar(); } | 75 bool hasVerticalScrollbar() const { return verticalScrollbar(); } |
76 | 76 |
77 virtual Scrollbar* horizontalScrollbar() const override { return m_hBar.get(
); } | 77 virtual Scrollbar* horizontalScrollbar() const override { return m_hBar.get(
); } |
78 virtual Scrollbar* verticalScrollbar() const override { return m_vBar.get();
} | 78 virtual Scrollbar* verticalScrollbar() const override { return m_vBar.get();
} |
79 | 79 |
80 virtual HostWindow* hostWindow() const override; | 80 virtual HostWindow* hostWindow() const override; |
81 | 81 |
82 virtual GraphicsLayer* layerForScrolling() const override; | 82 virtual GraphicsLayer* layerForScrolling() const override; |
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194 enum LCDTextMode { | 194 enum LCDTextMode { |
195 ConsiderLCDText, | 195 ConsiderLCDText, |
196 IgnoreLCDText | 196 IgnoreLCDText |
197 }; | 197 }; |
198 | 198 |
199 void updateNeedsCompositedScrolling(LCDTextMode = ConsiderLCDText); | 199 void updateNeedsCompositedScrolling(LCDTextMode = ConsiderLCDText); |
200 bool needsCompositedScrolling() const { return m_needsCompositedScrolling; } | 200 bool needsCompositedScrolling() const { return m_needsCompositedScrolling; } |
201 | 201 |
202 // These are used during compositing updates to determine if the overflow | 202 // These are used during compositing updates to determine if the overflow |
203 // controls need to be repositioned in the GraphicsLayer tree. | 203 // controls need to be repositioned in the GraphicsLayer tree. |
204 void setTopmostScrollChild(RenderLayer*); | 204 void setTopmostScrollChild(Layer*); |
205 RenderLayer* topmostScrollChild() const { ASSERT(!m_nextTopmostScrollChild);
return m_topmostScrollChild; } | 205 Layer* topmostScrollChild() const { ASSERT(!m_nextTopmostScrollChild); retur
n m_topmostScrollChild; } |
206 | 206 |
207 IntRect resizerCornerRect(const IntRect&, ResizerHitTestType) const; | 207 IntRect resizerCornerRect(const IntRect&, ResizerHitTestType) const; |
208 | 208 |
209 RenderBox& box() const; | 209 RenderBox& box() const; |
210 RenderLayer* layer() const; | 210 Layer* layer() const; |
211 | 211 |
212 RenderScrollbarPart* resizer() { return m_resizer; } | 212 RenderScrollbarPart* resizer() { return m_resizer; } |
213 | 213 |
214 const IntPoint& cachedOverlayScrollbarOffset() { return m_cachedOverlayScrol
lbarOffset; } | 214 const IntPoint& cachedOverlayScrollbarOffset() { return m_cachedOverlayScrol
lbarOffset; } |
215 void setCachedOverlayScrollbarOffset(const IntPoint& offset) { m_cachedOverl
ayScrollbarOffset = offset; } | 215 void setCachedOverlayScrollbarOffset(const IntPoint& offset) { m_cachedOverl
ayScrollbarOffset = offset; } |
216 | 216 |
217 IntRect rectForHorizontalScrollbar(const IntRect& borderBoxRect) const; | 217 IntRect rectForHorizontalScrollbar(const IntRect& borderBoxRect) const; |
218 IntRect rectForVerticalScrollbar(const IntRect& borderBoxRect) const; | 218 IntRect rectForVerticalScrollbar(const IntRect& borderBoxRect) const; |
219 | 219 |
220 private: | 220 private: |
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242 | 242 |
243 // See comments on isPointInResizeControl. | 243 // See comments on isPointInResizeControl. |
244 void updateResizerAreaSet(); | 244 void updateResizerAreaSet(); |
245 void updateResizerStyle(); | 245 void updateResizerStyle(); |
246 | 246 |
247 | 247 |
248 void updateScrollableAreaSet(bool hasOverflow); | 248 void updateScrollableAreaSet(bool hasOverflow); |
249 | 249 |
250 void updateCompositingLayersAfterScroll(); | 250 void updateCompositingLayersAfterScroll(); |
251 | 251 |
252 RenderLayer& m_layer; | 252 Layer& m_layer; |
253 | 253 |
254 // Keeps track of whether the layer is currently resizing, so events can cau
se resizing to start and stop. | 254 // Keeps track of whether the layer is currently resizing, so events can cau
se resizing to start and stop. |
255 unsigned m_inResizeMode : 1; | 255 unsigned m_inResizeMode : 1; |
256 unsigned m_scrollsOverflow : 1; | 256 unsigned m_scrollsOverflow : 1; |
257 | 257 |
258 unsigned m_scrollDimensionsDirty : 1; | 258 unsigned m_scrollDimensionsDirty : 1; |
259 unsigned m_inOverflowRelayout : 1; | 259 unsigned m_inOverflowRelayout : 1; |
260 | 260 |
261 RenderLayer* m_nextTopmostScrollChild; | 261 Layer* m_nextTopmostScrollChild; |
262 RenderLayer* m_topmostScrollChild; | 262 Layer* m_topmostScrollChild; |
263 | 263 |
264 // FIXME: once cc can handle composited scrolling with clip paths, we will | 264 // FIXME: once cc can handle composited scrolling with clip paths, we will |
265 // no longer need this bit. | 265 // no longer need this bit. |
266 unsigned m_needsCompositedScrolling : 1; | 266 unsigned m_needsCompositedScrolling : 1; |
267 | 267 |
268 // The width/height of our scrolled area. | 268 // The width/height of our scrolled area. |
269 LayoutRect m_overflowRect; | 269 LayoutRect m_overflowRect; |
270 | 270 |
271 // This is the (scroll) offset from scrollOrigin(). | 271 // This is the (scroll) offset from scrollOrigin(). |
272 DoubleSize m_scrollOffset; | 272 DoubleSize m_scrollOffset; |
273 | 273 |
274 IntPoint m_cachedOverlayScrollbarOffset; | 274 IntPoint m_cachedOverlayScrollbarOffset; |
275 | 275 |
276 // For areas with overflow, we have a pair of scrollbars. | 276 // For areas with overflow, we have a pair of scrollbars. |
277 RefPtrWillBePersistent<Scrollbar> m_hBar; | 277 RefPtrWillBePersistent<Scrollbar> m_hBar; |
278 RefPtrWillBePersistent<Scrollbar> m_vBar; | 278 RefPtrWillBePersistent<Scrollbar> m_vBar; |
279 | 279 |
280 // Renderers to hold our custom scroll corner. | 280 // Renderers to hold our custom scroll corner. |
281 RenderScrollbarPart* m_scrollCorner; | 281 RenderScrollbarPart* m_scrollCorner; |
282 | 282 |
283 // Renderers to hold our custom resizer. | 283 // Renderers to hold our custom resizer. |
284 RenderScrollbarPart* m_resizer; | 284 RenderScrollbarPart* m_resizer; |
285 }; | 285 }; |
286 | 286 |
287 } // namespace blink | 287 } // namespace blink |
288 | 288 |
289 #endif // RenderLayerScrollableArea_h | 289 #endif // LayerScrollableArea_h |
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