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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 |
11 namespace WebCore { | 11 namespace WebCore { |
12 | 12 |
13 const uint64_t CompositingReasonNone = 0; | 13 const uint64_t CompositingReasonNone = 0; |
14 | 14 |
15 // Intrinsic reasons that can be known right away by the layer | 15 // Intrinsic reasons that can be known right away by the layer |
16 const uint64_t CompositingReason3DTransform = UINT64_
C(1) << 0; | 16 const uint64_t CompositingReason3DTransform = UINT64_
C(1) << 0; |
17 const uint64_t CompositingReasonVideo = UINT64_
C(1) << 1; | 17 const uint64_t CompositingReasonVideo = UINT64_
C(1) << 1; |
18 const uint64_t CompositingReasonCanvas = UINT64_
C(1) << 2; | 18 const uint64_t CompositingReasonCanvas = UINT64_
C(1) << 2; |
19 const uint64_t CompositingReasonPlugin = UINT64_
C(1) << 3; | 19 const uint64_t CompositingReasonPlugin = UINT64_
C(1) << 3; |
20 const uint64_t CompositingReasonIFrame = UINT64_
C(1) << 4; | 20 const uint64_t CompositingReasonIFrame = UINT64_
C(1) << 4; |
21 const uint64_t CompositingReasonBackfaceVisibilityHidden = UINT64_
C(1) << 5; | 21 const uint64_t CompositingReasonBackfaceVisibilityHidden = UINT64_
C(1) << 5; |
22 const uint64_t CompositingReasonAnimation = UINT64_
C(1) << 6; | 22 const uint64_t CompositingReasonAnimation = UINT64_
C(1) << 6; |
23 const uint64_t CompositingReasonFilters = UINT64_
C(1) << 7; | 23 const uint64_t CompositingReasonFilters = UINT64_
C(1) << 7; |
24 const uint64_t CompositingReasonPositionFixed = UINT64_
C(1) << 8; | 24 const uint64_t CompositingReasonPositionFixed = UINT64_
C(1) << 8; |
25 const uint64_t CompositingReasonPositionSticky = UINT64_
C(1) << 9; | 25 const uint64_t CompositingReasonPositionSticky = UINT64_
C(1) << 9; |
26 const uint64_t CompositingReasonOverflowScrollingTouch = UINT64_
C(1) << 10; | 26 const uint64_t CompositingReasonOverflowScrollingTouch = UINT64_
C(1) << 10; |
27 const uint64_t CompositingReasonBlending = UINT64_
C(1) << 11; | |
28 | 27 |
29 // Overlap reasons that require knowing what's behind you in paint-order before
knowing the answer | 28 // Overlap reasons that require knowing what's behind you in paint-order before
knowing the answer |
30 const uint64_t CompositingReasonAssumedOverlap = UINT64_
C(1) << 12; | 29 const uint64_t CompositingReasonAssumedOverlap = UINT64_
C(1) << 12; |
31 const uint64_t CompositingReasonOverlap = UINT64_
C(1) << 13; | 30 const uint64_t CompositingReasonOverlap = UINT64_
C(1) << 13; |
32 const uint64_t CompositingReasonNegativeZIndexChildren = UINT64_
C(1) << 14; | 31 const uint64_t CompositingReasonNegativeZIndexChildren = UINT64_
C(1) << 14; |
33 | 32 |
34 // Subtree reasons that require knowing what the status of your subtree is befor
e knowing the answer | 33 // Subtree reasons that require knowing what the status of your subtree is befor
e knowing the answer |
35 const uint64_t CompositingReasonTransformWithCompositedDescendants = UINT64_
C(1) << 15; | 34 const uint64_t CompositingReasonTransformWithCompositedDescendants = UINT64_
C(1) << 15; |
36 const uint64_t CompositingReasonOpacityWithCompositedDescendants = UINT64_
C(1) << 16; | 35 const uint64_t CompositingReasonOpacityWithCompositedDescendants = UINT64_
C(1) << 16; |
37 const uint64_t CompositingReasonMaskWithCompositedDescendants = UINT64_
C(1) << 17; | 36 const uint64_t CompositingReasonMaskWithCompositedDescendants = UINT64_
C(1) << 17; |
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62 | 61 |
63 const uint64_t CompositingReasonLayerForVideoOverlay = UINT64_
C(1) << 34; | 62 const uint64_t CompositingReasonLayerForVideoOverlay = UINT64_
C(1) << 34; |
64 | 63 |
65 // Note: if you add more reasons here, you will need to update WebCompositingRea
sons as well. | 64 // Note: if you add more reasons here, you will need to update WebCompositingRea
sons as well. |
66 typedef uint64_t CompositingReasons; | 65 typedef uint64_t CompositingReasons; |
67 | 66 |
68 | 67 |
69 } // namespace WebCore | 68 } // namespace WebCore |
70 | 69 |
71 #endif // CompositingReasons_h | 70 #endif // CompositingReasons_h |
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