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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef ClipRectsCache_h | 5 #ifndef ClipRectsCache_h |
6 #define ClipRectsCache_h | 6 #define ClipRectsCache_h |
7 | 7 |
8 #include "core/rendering/ClipRects.h" | 8 #include "core/rendering/ClipRects.h" |
9 | 9 |
10 #if ENABLE(ASSERT) | 10 #if ENABLE(ASSERT) |
11 #include "core/rendering/RenderBox.h" // For OverlayScrollbarSizeRelevancy. | 11 #include "core/rendering/RenderBox.h" // For OverlayScrollbarSizeRelevancy. |
12 #endif | 12 #endif |
13 | 13 |
14 namespace blink { | 14 namespace blink { |
15 | 15 |
16 class RenderLayer; | 16 class Layer; |
17 | 17 |
18 enum ClipRectsCacheSlot { | 18 enum ClipRectsCacheSlot { |
19 // Relative to the ancestor treated as the root (e.g. transformed layer). Us
ed for hit testing. | 19 // Relative to the ancestor treated as the root (e.g. transformed layer). Us
ed for hit testing. |
20 RootRelativeClipRects, | 20 RootRelativeClipRects, |
21 | 21 |
22 // Relative to the RenderView's layer. Used for compositing overlap testing. | 22 // Relative to the RenderView's layer. Used for compositing overlap testing. |
23 AbsoluteClipRects, | 23 AbsoluteClipRects, |
24 | 24 |
25 // Relative to painting ancestor. Used for painting. | 25 // Relative to painting ancestor. Used for painting. |
26 PaintingClipRects, | 26 PaintingClipRects, |
27 PaintingClipRectsIgnoringOverflowClip, | 27 PaintingClipRectsIgnoringOverflowClip, |
28 | 28 |
29 NumberOfClipRectsCacheSlots, | 29 NumberOfClipRectsCacheSlots, |
30 UncachedClipRects, | 30 UncachedClipRects, |
31 }; | 31 }; |
32 | 32 |
33 class ClipRectsCache { | 33 class ClipRectsCache { |
34 WTF_MAKE_FAST_ALLOCATED; | 34 WTF_MAKE_FAST_ALLOCATED; |
35 public: | 35 public: |
36 struct Entry { | 36 struct Entry { |
37 Entry() | 37 Entry() |
38 : root(0) | 38 : root(0) |
39 #if ENABLE(ASSERT) | 39 #if ENABLE(ASSERT) |
40 , scrollbarRelevancy(IgnoreOverlayScrollbarSize) | 40 , scrollbarRelevancy(IgnoreOverlayScrollbarSize) |
41 #endif | 41 #endif |
42 { | 42 { |
43 } | 43 } |
44 | 44 |
45 const RenderLayer* root; | 45 const Layer* root; |
46 RefPtr<ClipRects> clipRects; | 46 RefPtr<ClipRects> clipRects; |
47 #if ENABLE(ASSERT) | 47 #if ENABLE(ASSERT) |
48 OverlayScrollbarSizeRelevancy scrollbarRelevancy; | 48 OverlayScrollbarSizeRelevancy scrollbarRelevancy; |
49 #endif | 49 #endif |
50 }; | 50 }; |
51 | 51 |
52 Entry& get(ClipRectsCacheSlot slot) | 52 Entry& get(ClipRectsCacheSlot slot) |
53 { | 53 { |
54 ASSERT(slot < NumberOfClipRectsCacheSlots); | 54 ASSERT(slot < NumberOfClipRectsCacheSlots); |
55 return m_entries[slot]; | 55 return m_entries[slot]; |
56 } | 56 } |
57 | 57 |
58 void clear(ClipRectsCacheSlot slot) | 58 void clear(ClipRectsCacheSlot slot) |
59 { | 59 { |
60 ASSERT(slot < NumberOfClipRectsCacheSlots); | 60 ASSERT(slot < NumberOfClipRectsCacheSlots); |
61 m_entries[slot] = Entry(); | 61 m_entries[slot] = Entry(); |
62 } | 62 } |
63 | 63 |
64 private: | 64 private: |
65 Entry m_entries[NumberOfClipRectsCacheSlots]; | 65 Entry m_entries[NumberOfClipRectsCacheSlots]; |
66 }; | 66 }; |
67 | 67 |
68 } // namespace blink | 68 } // namespace blink |
69 | 69 |
70 #endif // ClipRectsCache_h | 70 #endif // ClipRectsCache_h |
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