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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 CompositingReasons_h | 5 #ifndef CompositingReasons_h |
6 #define CompositingReasons_h | 6 #define CompositingReasons_h |
7 | 7 |
8 #include "wtf/MathExtras.h" | 8 #include "wtf/MathExtras.h" |
9 #include <stdint.h> | 9 #include <stdint.h> |
10 | 10 |
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54 const uint64_t CompositingReasonLayerForBackground = UINT64_
C(1) << 30; | 54 const uint64_t CompositingReasonLayerForBackground = UINT64_
C(1) << 30; |
55 const uint64_t CompositingReasonLayerForMask = UINT64_
C(1) << 31; | 55 const uint64_t CompositingReasonLayerForMask = UINT64_
C(1) << 31; |
56 | 56 |
57 // FIXME: the following compositing reasons need to be re-organized to fit with
categories | 57 // FIXME: the following compositing reasons need to be re-organized to fit with
categories |
58 // used in all the other reasons above. | 58 // used in all the other reasons above. |
59 const uint64_t CompositingReasonOverflowScrollingParent = UINT64_
C(1) << 32; | 59 const uint64_t CompositingReasonOverflowScrollingParent = UINT64_
C(1) << 32; |
60 const uint64_t CompositingReasonOutOfFlowClipping = UINT64_
C(1) << 33; | 60 const uint64_t CompositingReasonOutOfFlowClipping = UINT64_
C(1) << 33; |
61 | 61 |
62 const uint64_t CompositingReasonLayerForVideoOverlay = UINT64_
C(1) << 34; | 62 const uint64_t CompositingReasonLayerForVideoOverlay = UINT64_
C(1) << 34; |
63 | 63 |
| 64 // Note: if you add more reasons here, you will need to update WebCompositingRea
sons as well. |
| 65 |
| 66 // Various combinations of compositing reasons are defined here also, for more i
ntutive and faster bitwise logic. |
64 const uint64_t CompositingReasonComboAllDirectReasons = | 67 const uint64_t CompositingReasonComboAllDirectReasons = |
65 CompositingReason3DTransform | 68 CompositingReason3DTransform |
66 | CompositingReasonVideo | 69 | CompositingReasonVideo |
67 | CompositingReasonCanvas | 70 | CompositingReasonCanvas |
68 | CompositingReasonPlugin | 71 | CompositingReasonPlugin |
69 | CompositingReasonIFrame | 72 | CompositingReasonIFrame |
70 | CompositingReasonBackfaceVisibilityHidden | 73 | CompositingReasonBackfaceVisibilityHidden |
71 | CompositingReasonAnimation | 74 | CompositingReasonAnimation |
72 | CompositingReasonFilters | 75 | CompositingReasonFilters |
73 | CompositingReasonPositionFixed | 76 | CompositingReasonPositionFixed |
74 | CompositingReasonPositionSticky | 77 | CompositingReasonPositionSticky |
75 | CompositingReasonOverflowScrollingTouch | 78 | CompositingReasonOverflowScrollingTouch |
76 | CompositingReasonOverflowScrollingParent | 79 | CompositingReasonOverflowScrollingParent |
77 | CompositingReasonOutOfFlowClipping; | 80 | CompositingReasonOutOfFlowClipping; |
78 | 81 |
79 const uint64_t CompositingReasonComboReasonsThatRequireOwnBacking = | 82 const uint64_t CompositingReasonComboReasonsThatRequireOwnBacking = |
80 CompositingReasonComboAllDirectReasons | 83 CompositingReasonComboAllDirectReasons |
81 | CompositingReasonOverlap | 84 | CompositingReasonOverlap |
82 | CompositingReasonAssumedOverlap | 85 | CompositingReasonAssumedOverlap |
83 | CompositingReasonNegativeZIndexChildren | 86 | CompositingReasonNegativeZIndexChildren |
84 | CompositingReasonTransformWithCompositedDescendants | 87 | CompositingReasonTransformWithCompositedDescendants |
85 | CompositingReasonOpacityWithCompositedDescendants | 88 | CompositingReasonOpacityWithCompositedDescendants |
86 | CompositingReasonMaskWithCompositedDescendants | 89 | CompositingReasonMaskWithCompositedDescendants |
87 | CompositingReasonFilterWithCompositedDescendants | 90 | CompositingReasonFilterWithCompositedDescendants |
88 | CompositingReasonBlendingWithCompositedDescendants | 91 | CompositingReasonBlendingWithCompositedDescendants |
89 | CompositingReasonPreserve3D; // preserve-3d has to create backing store to
ensure that 3d-transformed elements intersect. | 92 | CompositingReasonPreserve3D; // preserve-3d has to create backing store to
ensure that 3d-transformed elements intersect. |
90 | 93 |
91 // Note: if you add more reasons here, you will need to update WebCompositingRea
sons as well. | 94 const uint64_t CompositingReasonComboAllOverlapReasons = |
| 95 CompositingReasonOverlap |
| 96 | CompositingReasonAssumedOverlap; |
| 97 |
92 typedef uint64_t CompositingReasons; | 98 typedef uint64_t CompositingReasons; |
93 | 99 |
94 | 100 |
95 } // namespace WebCore | 101 } // namespace WebCore |
96 | 102 |
97 #endif // CompositingReasons_h | 103 #endif // CompositingReasons_h |
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