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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 CompositingReasons_h | 5 #ifndef CompositingReasons_h | 
| 6 #define CompositingReasons_h | 6 #define CompositingReasons_h | 
| 7 | 7 | 
| 8 #include "platform/PlatformExport.h" | 8 #include "platform/PlatformExport.h" | 
| 9 #include "wtf/Allocator.h" | 9 #include "wtf/Allocator.h" | 
| 10 #include "wtf/text/WTFString.h" | 10 #include "wtf/text/WTFString.h" | 
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| 78                                                                << 37; | 78                                                                << 37; | 
| 79 const uint64_t CompositingReasonLayerForScrollCorner = UINT64_C(1) << 38; | 79 const uint64_t CompositingReasonLayerForScrollCorner = UINT64_C(1) << 38; | 
| 80 const uint64_t CompositingReasonLayerForScrollingContents = UINT64_C(1) << 39; | 80 const uint64_t CompositingReasonLayerForScrollingContents = UINT64_C(1) << 39; | 
| 81 const uint64_t CompositingReasonLayerForScrollingContainer = UINT64_C(1) << 40; | 81 const uint64_t CompositingReasonLayerForScrollingContainer = UINT64_C(1) << 40; | 
| 82 const uint64_t CompositingReasonLayerForSquashingContents = UINT64_C(1) << 41; | 82 const uint64_t CompositingReasonLayerForSquashingContents = UINT64_C(1) << 41; | 
| 83 const uint64_t CompositingReasonLayerForSquashingContainer = UINT64_C(1) << 42; | 83 const uint64_t CompositingReasonLayerForSquashingContainer = UINT64_C(1) << 42; | 
| 84 const uint64_t CompositingReasonLayerForForeground = UINT64_C(1) << 43; | 84 const uint64_t CompositingReasonLayerForForeground = UINT64_C(1) << 43; | 
| 85 const uint64_t CompositingReasonLayerForBackground = UINT64_C(1) << 44; | 85 const uint64_t CompositingReasonLayerForBackground = UINT64_C(1) << 44; | 
| 86 const uint64_t CompositingReasonLayerForMask = UINT64_C(1) << 45; | 86 const uint64_t CompositingReasonLayerForMask = UINT64_C(1) << 45; | 
| 87 const uint64_t CompositingReasonLayerForClippingMask = UINT64_C(1) << 46; | 87 const uint64_t CompositingReasonLayerForClippingMask = UINT64_C(1) << 46; | 
|  | 88 const uint64_t CompositingReasonLayerForAncestorClippingMask = UINT64_C(1) | 
|  | 89                                                                << 47; | 
| 88 const uint64_t CompositingReasonLayerForScrollingBlockSelection = UINT64_C(1) | 90 const uint64_t CompositingReasonLayerForScrollingBlockSelection = UINT64_C(1) | 
| 89                                                                   << 47; | 91                                                                   << 48; | 
| 90 // Composited layer painted on top of all other layers as decoration | 92 // Composited layer painted on top of all other layers as decoration | 
| 91 const uint64_t CompositingReasonLayerForDecoration = UINT64_C(1) << 48; | 93 const uint64_t CompositingReasonLayerForDecoration = UINT64_C(1) << 49; | 
| 92 | 94 | 
| 93 // Composited elements with inline transforms trigger assumed overlap so that | 95 // Composited elements with inline transforms trigger assumed overlap so that | 
| 94 // we can update their transforms quickly. | 96 // we can update their transforms quickly. | 
| 95 const uint64_t CompositingReasonInlineTransform = UINT64_C(1) << 49; | 97 const uint64_t CompositingReasonInlineTransform = UINT64_C(1) << 50; | 
| 96 | 98 | 
| 97 const uint64_t CompositingReasonCompositorProxy = UINT64_C(1) << 50; | 99 const uint64_t CompositingReasonCompositorProxy = UINT64_C(1) << 51; | 
| 98 | 100 | 
| 99 // Various combinations of compositing reasons are defined here also, for more | 101 // Various combinations of compositing reasons are defined here also, for more | 
| 100 // intutive and faster bitwise logic. | 102 // intutive and faster bitwise logic. | 
| 101 const uint64_t CompositingReasonComboAllDirectReasons = | 103 const uint64_t CompositingReasonComboAllDirectReasons = | 
| 102     CompositingReason3DTransform | CompositingReasonVideo | | 104     CompositingReason3DTransform | CompositingReasonVideo | | 
| 103     CompositingReasonCanvas | CompositingReasonPlugin | | 105     CompositingReasonCanvas | CompositingReasonPlugin | | 
| 104     CompositingReasonIFrame | CompositingReasonBackfaceVisibilityHidden | | 106     CompositingReasonIFrame | CompositingReasonBackfaceVisibilityHidden | | 
| 105     CompositingReasonActiveAnimation | CompositingReasonTransitionProperty | | 107     CompositingReasonActiveAnimation | CompositingReasonTransitionProperty | | 
| 106     CompositingReasonScrollDependentPosition | | 108     CompositingReasonScrollDependentPosition | | 
| 107     CompositingReasonOverflowScrollingTouch | | 109     CompositingReasonOverflowScrollingTouch | | 
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| 180 }; | 182 }; | 
| 181 | 183 | 
| 182 PLATFORM_EXPORT extern const CompositingReasonStringMap | 184 PLATFORM_EXPORT extern const CompositingReasonStringMap | 
| 183     kCompositingReasonStringMap[]; | 185     kCompositingReasonStringMap[]; | 
| 184 PLATFORM_EXPORT extern const size_t kNumberOfCompositingReasons; | 186 PLATFORM_EXPORT extern const size_t kNumberOfCompositingReasons; | 
| 185 PLATFORM_EXPORT String compositingReasonsAsString(CompositingReasons); | 187 PLATFORM_EXPORT String compositingReasonsAsString(CompositingReasons); | 
| 186 | 188 | 
| 187 }  // namespace blink | 189 }  // namespace blink | 
| 188 | 190 | 
| 189 #endif  // CompositingReasons_h | 191 #endif  // CompositingReasons_h | 
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