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| 1 /* | 1 /* |
| 2 * Copyright (C) 2008, 2011 Apple Inc. All Rights Reserved. | 2 * Copyright (C) 2008, 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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| 174 } | 174 } |
| 175 | 175 |
| 176 virtual bool isActive() const = 0; | 176 virtual bool isActive() const = 0; |
| 177 virtual int scrollSize(ScrollbarOrientation) const = 0; | 177 virtual int scrollSize(ScrollbarOrientation) const = 0; |
| 178 void setScrollbarNeedsPaintInvalidation(ScrollbarOrientation); | 178 void setScrollbarNeedsPaintInvalidation(ScrollbarOrientation); |
| 179 virtual bool isScrollCornerVisible() const = 0; | 179 virtual bool isScrollCornerVisible() const = 0; |
| 180 virtual IntRect scrollCornerRect() const = 0; | 180 virtual IntRect scrollCornerRect() const = 0; |
| 181 void setScrollCornerNeedsPaintInvalidation(); | 181 void setScrollCornerNeedsPaintInvalidation(); |
| 182 virtual void getTickmarks(Vector<IntRect>&) const {} | 182 virtual void getTickmarks(Vector<IntRect>&) const {} |
| 183 | 183 |
| 184 // Convert points and rects between the scrollbar and its containing Widget. | 184 // Convert points and rects between the scrollbar and its containing |
| 185 // The client needs to implement these in order to be aware of layout effects | 185 // FrameViewBase. The client needs to implement these in order to be aware of |
| 186 // like CSS transforms. | 186 // layout effects like CSS transforms. |
| 187 virtual IntRect convertFromScrollbarToContainingWidget( | 187 virtual IntRect convertFromScrollbarToContainingWidget( |
| 188 const Scrollbar& scrollbar, | 188 const Scrollbar& scrollbar, |
| 189 const IntRect& scrollbarRect) const { | 189 const IntRect& scrollbarRect) const { |
| 190 return scrollbar.Widget::convertToContainingWidget(scrollbarRect); | 190 return scrollbar.FrameViewBase::convertToContainingWidget(scrollbarRect); |
| 191 } | 191 } |
| 192 virtual IntRect convertFromContainingWidgetToScrollbar( | 192 virtual IntRect convertFromContainingWidgetToScrollbar( |
| 193 const Scrollbar& scrollbar, | 193 const Scrollbar& scrollbar, |
| 194 const IntRect& parentRect) const { | 194 const IntRect& parentRect) const { |
| 195 return scrollbar.Widget::convertFromContainingWidget(parentRect); | 195 return scrollbar.FrameViewBase::convertFromContainingWidget(parentRect); |
| 196 } | 196 } |
| 197 virtual IntPoint convertFromScrollbarToContainingWidget( | 197 virtual IntPoint convertFromScrollbarToContainingWidget( |
| 198 const Scrollbar& scrollbar, | 198 const Scrollbar& scrollbar, |
| 199 const IntPoint& scrollbarPoint) const { | 199 const IntPoint& scrollbarPoint) const { |
| 200 return scrollbar.Widget::convertToContainingWidget(scrollbarPoint); | 200 return scrollbar.FrameViewBase::convertToContainingWidget(scrollbarPoint); |
| 201 } | 201 } |
| 202 virtual IntPoint convertFromContainingWidgetToScrollbar( | 202 virtual IntPoint convertFromContainingWidgetToScrollbar( |
| 203 const Scrollbar& scrollbar, | 203 const Scrollbar& scrollbar, |
| 204 const IntPoint& parentPoint) const { | 204 const IntPoint& parentPoint) const { |
| 205 return scrollbar.Widget::convertFromContainingWidget(parentPoint); | 205 return scrollbar.FrameViewBase::convertFromContainingWidget(parentPoint); |
| 206 } | 206 } |
| 207 | 207 |
| 208 virtual Scrollbar* horizontalScrollbar() const { return nullptr; } | 208 virtual Scrollbar* horizontalScrollbar() const { return nullptr; } |
| 209 virtual Scrollbar* verticalScrollbar() const { return nullptr; } | 209 virtual Scrollbar* verticalScrollbar() const { return nullptr; } |
| 210 | 210 |
| 211 virtual PaintLayer* layer() const { return nullptr; } | 211 virtual PaintLayer* layer() const { return nullptr; } |
| 212 | 212 |
| 213 // scrollPosition is the location of the top/left of the scroll viewport in | 213 // scrollPosition is the location of the top/left of the scroll viewport in |
| 214 // the coordinate system defined by the top/left of the overflow rect. | 214 // the coordinate system defined by the top/left of the overflow rect. |
| 215 // scrollOffset is the offset of the scroll viewport from its position when | 215 // scrollOffset is the offset of the scroll viewport from its position when |
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| 329 // Subtracts space occupied by this ScrollableArea's scrollbars. | 329 // Subtracts space occupied by this ScrollableArea's scrollbars. |
| 330 // Does nothing if overlay scrollbars are enabled. | 330 // Does nothing if overlay scrollbars are enabled. |
| 331 IntSize excludeScrollbars(const IntSize&) const; | 331 IntSize excludeScrollbars(const IntSize&) const; |
| 332 | 332 |
| 333 virtual int verticalScrollbarWidth( | 333 virtual int verticalScrollbarWidth( |
| 334 OverlayScrollbarClipBehavior = IgnoreOverlayScrollbarSize) const; | 334 OverlayScrollbarClipBehavior = IgnoreOverlayScrollbarSize) const; |
| 335 virtual int horizontalScrollbarHeight( | 335 virtual int horizontalScrollbarHeight( |
| 336 OverlayScrollbarClipBehavior = IgnoreOverlayScrollbarSize) const; | 336 OverlayScrollbarClipBehavior = IgnoreOverlayScrollbarSize) const; |
| 337 | 337 |
| 338 // Returns the widget associated with this ScrollableArea. | 338 // Returns the widget associated with this ScrollableArea. |
| 339 virtual Widget* getWidget() { return nullptr; } | 339 virtual FrameViewBase* getWidget() { return nullptr; } |
| 340 | 340 |
| 341 virtual LayoutBox* layoutBox() const { return nullptr; } | 341 virtual LayoutBox* layoutBox() const { return nullptr; } |
| 342 | 342 |
| 343 // Maps a quad from the coordinate system of a LayoutObject contained by the | 343 // Maps a quad from the coordinate system of a LayoutObject contained by the |
| 344 // ScrollableArea to the coordinate system of the ScrollableArea's visible | 344 // ScrollableArea to the coordinate system of the ScrollableArea's visible |
| 345 // content rect. If the LayoutObject* argument is null, the argument quad is | 345 // content rect. If the LayoutObject* argument is null, the argument quad is |
| 346 // considered to be in the coordinate space of the overflow rect. | 346 // considered to be in the coordinate space of the overflow rect. |
| 347 virtual FloatQuad localToVisibleContentQuad(const FloatQuad&, | 347 virtual FloatQuad localToVisibleContentQuad(const FloatQuad&, |
| 348 const LayoutObject*, | 348 const LayoutObject*, |
| 349 unsigned = 0) const; | 349 unsigned = 0) const; |
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| 449 // vertical-lr / ltr NO NO | 449 // vertical-lr / ltr NO NO |
| 450 // vertical-lr / rtl NO YES | 450 // vertical-lr / rtl NO YES |
| 451 // vertical-rl / ltr YES NO | 451 // vertical-rl / ltr YES NO |
| 452 // vertical-rl / rtl YES YES | 452 // vertical-rl / rtl YES YES |
| 453 IntPoint m_scrollOrigin; | 453 IntPoint m_scrollOrigin; |
| 454 }; | 454 }; |
| 455 | 455 |
| 456 } // namespace blink | 456 } // namespace blink |
| 457 | 457 |
| 458 #endif // ScrollableArea_h | 458 #endif // ScrollableArea_h |
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