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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 * Copyright (C) 2013 Intel Corporation. All rights reserved. | 3 * Copyright (C) 2013 Intel Corporation. All rights reserved. |
| 4 * | 4 * |
| 5 * Portions are Copyright (C) 1998 Netscape Communications Corporation. | 5 * Portions are Copyright (C) 1998 Netscape Communications Corporation. |
| 6 * | 6 * |
| 7 * Other contributors: | 7 * Other contributors: |
| 8 * Robert O'Callahan <roc+@cs.cmu.edu> | 8 * Robert O'Callahan <roc+@cs.cmu.edu> |
| 9 * David Baron <dbaron@fas.harvard.edu> | 9 * David Baron <dbaron@fas.harvard.edu> |
| 10 * Christian Biesinger <cbiesinger@web.de> | 10 * Christian Biesinger <cbiesinger@web.de> |
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| 45 #ifndef SKY_ENGINE_CORE_RENDERING_RENDERLAYERCLIPPER_H_ | 45 #ifndef SKY_ENGINE_CORE_RENDERING_RENDERLAYERCLIPPER_H_ |
| 46 #define SKY_ENGINE_CORE_RENDERING_RENDERLAYERCLIPPER_H_ | 46 #define SKY_ENGINE_CORE_RENDERING_RENDERLAYERCLIPPER_H_ |
| 47 | 47 |
| 48 #include "sky/engine/core/rendering/ClipRectsCache.h" | 48 #include "sky/engine/core/rendering/ClipRectsCache.h" |
| 49 #include "sky/engine/core/rendering/RenderBox.h" | 49 #include "sky/engine/core/rendering/RenderBox.h" |
| 50 | 50 |
| 51 namespace blink { | 51 namespace blink { |
| 52 | 52 |
| 53 class RenderLayer; | 53 class RenderLayer; |
| 54 | 54 |
| 55 enum ShouldRespectOverflowClip { | |
| 56 IgnoreOverflowClip, | |
| 57 RespectOverflowClip | |
| 58 }; | |
| 59 | |
| 60 class ClipRectsContext { | 55 class ClipRectsContext { |
| 61 public: | 56 public: |
| 62 ClipRectsContext(const RenderLayer* root, ClipRectsCacheSlot slot, const Lay
outSize& accumulation = LayoutSize()) | 57 ClipRectsContext(const RenderLayer* root, ClipRectsCacheSlot slot, const Lay
outSize& accumulation = LayoutSize()) |
| 63 : rootLayer(root) | 58 : rootLayer(root) |
| 64 , cacheSlot(slot) | 59 , cacheSlot(slot) |
| 65 , subPixelAccumulation(accumulation) | 60 , subPixelAccumulation(accumulation) |
| 66 , respectOverflowClip(slot == PaintingClipRectsIgnoringOverflowClip ? Ig
noreOverflowClip : RespectOverflowClip) | |
| 67 { | 61 { |
| 68 } | 62 } |
| 69 | 63 |
| 70 void setIgnoreOverflowClip() | |
| 71 { | |
| 72 ASSERT(!usesCache() || cacheSlot == PaintingClipRects); | |
| 73 ASSERT(respectOverflowClip == RespectOverflowClip); | |
| 74 if (usesCache()) | |
| 75 cacheSlot = PaintingClipRectsIgnoringOverflowClip; | |
| 76 respectOverflowClip = IgnoreOverflowClip; | |
| 77 } | |
| 78 | |
| 79 bool usesCache() const | 64 bool usesCache() const |
| 80 { | 65 { |
| 81 return cacheSlot != UncachedClipRects; | 66 return cacheSlot != UncachedClipRects; |
| 82 } | 67 } |
| 83 | 68 |
| 84 const RenderLayer* const rootLayer; | 69 const RenderLayer* const rootLayer; |
| 85 | 70 |
| 86 private: | 71 private: |
| 87 friend class RenderLayerClipper; | 72 friend class RenderLayerClipper; |
| 88 | 73 |
| 89 ClipRectsCacheSlot cacheSlot; | 74 ClipRectsCacheSlot cacheSlot; |
| 90 LayoutSize subPixelAccumulation; | 75 LayoutSize subPixelAccumulation; |
| 91 ShouldRespectOverflowClip respectOverflowClip; | |
| 92 }; | 76 }; |
| 93 | 77 |
| 94 class RenderLayerClipper { | 78 class RenderLayerClipper { |
| 95 WTF_MAKE_NONCOPYABLE(RenderLayerClipper); | 79 WTF_MAKE_NONCOPYABLE(RenderLayerClipper); |
| 96 public: | 80 public: |
| 97 explicit RenderLayerClipper(RenderLayerModelObject&); | 81 explicit RenderLayerClipper(RenderLayerModelObject&); |
| 98 | 82 |
| 99 void clearClipRectsIncludingDescendants(); | 83 void clearClipRectsIncludingDescendants(); |
| 100 void clearClipRectsIncludingDescendants(ClipRectsCacheSlot); | 84 void clearClipRectsIncludingDescendants(ClipRectsCacheSlot); |
| 101 | 85 |
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| 138 } | 122 } |
| 139 | 123 |
| 140 // FIXME: Could this be a RenderBox? | 124 // FIXME: Could this be a RenderBox? |
| 141 RenderLayerModelObject& m_renderer; | 125 RenderLayerModelObject& m_renderer; |
| 142 mutable OwnPtr<ClipRectsCache> m_cache; | 126 mutable OwnPtr<ClipRectsCache> m_cache; |
| 143 }; | 127 }; |
| 144 | 128 |
| 145 } // namespace blink | 129 } // namespace blink |
| 146 | 130 |
| 147 #endif // SKY_ENGINE_CORE_RENDERING_RENDERLAYERCLIPPER_H_ | 131 #endif // SKY_ENGINE_CORE_RENDERING_RENDERLAYERCLIPPER_H_ |
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