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Remove CompositingReasons.h

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R=esprehn@chromium.org

Review URL: https://codereview.chromium.org/869023006
This commit is contained in:
Adam Barth 2015-01-23 12:49:50 -08:00
parent 87c4a4863d
commit 37f9f11ef7
1 changed files with 0 additions and 167 deletions
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167
engine/platform/graphics/CompositingReasons.h
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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef SKY_ENGINE_PLATFORM_GRAPHICS_COMPOSITINGREASONS_H_
#define SKY_ENGINE_PLATFORM_GRAPHICS_COMPOSITINGREASONS_H_
#include <stdint.h>
#include "sky/engine/platform/PlatformExport.h"
#include "sky/engine/wtf/MathExtras.h"
namespace blink {
const uint64_t CompositingReasonNone = 0;
const uint64_t CompositingReasonAll = ~static_cast<uint64_t>(0);
// FIXME(sky): Get rid of all this.
// Intrinsic reasons that can be known right away by the layer
const uint64_t CompositingReason3DTransform = UINT64_C(1) << 0;
const uint64_t CompositingReasonVideo = UINT64_C(1) << 1;
const uint64_t CompositingReasonCanvas = UINT64_C(1) << 2;
const uint64_t CompositingReasonIFrame = UINT64_C(1) << 4;
const uint64_t CompositingReasonBackfaceVisibilityHidden = UINT64_C(1) << 5;
const uint64_t CompositingReasonActiveAnimation = UINT64_C(1) << 6;
const uint64_t CompositingReasonTransitionProperty = UINT64_C(1) << 7;
const uint64_t CompositingReasonOverflowScrollingTouch = UINT64_C(1) << 9;
const uint64_t CompositingReasonOverflowScrollingParent = UINT64_C(1) << 10;
const uint64_t CompositingReasonOutOfFlowClipping = UINT64_C(1) << 11;
const uint64_t CompositingReasonWillChangeCompositingHint = UINT64_C(1) << 13;
// Overlap reasons that require knowing what's behind you in paint-order before knowing the answer
const uint64_t CompositingReasonAssumedOverlap = UINT64_C(1) << 14;
const uint64_t CompositingReasonOverlap = UINT64_C(1) << 15;
const uint64_t CompositingReasonNegativeZIndexChildren = UINT64_C(1) << 16;
const uint64_t CompositingReasonScrollsWithRespectToSquashingLayer = UINT64_C(1) << 17;
const uint64_t CompositingReasonSquashingClippingContainerMismatch = UINT64_C(1) << 19;
const uint64_t CompositingReasonSquashingOpacityAncestorMismatch = UINT64_C(1) << 20;
const uint64_t CompositingReasonSquashingTransformAncestorMismatch = UINT64_C(1) << 21;
const uint64_t CompositingReasonSquashingFilterAncestorMismatch = UINT64_C(1) << 22;
const uint64_t CompositingReasonSquashingWouldBreakPaintOrder = UINT64_C(1) << 23;
const uint64_t CompositingReasonSquashingVideoIsDisallowed = UINT64_C(1) << 24;
const uint64_t CompositingReasonSquashedLayerClipsCompositingDescendants = UINT64_C(1) << 25;
// Subtree reasons that require knowing what the status of your subtree is before knowing the answer
const uint64_t CompositingReasonTransformWithCompositedDescendants = UINT64_C(1) << 28;
const uint64_t CompositingReasonOpacityWithCompositedDescendants = UINT64_C(1) << 29;
const uint64_t CompositingReasonMaskWithCompositedDescendants = UINT64_C(1) << 30;
const uint64_t CompositingReasonFilterWithCompositedDescendants = UINT64_C(1) << 32;
// TODO(sky): Unused 33
const uint64_t CompositingReasonClipsCompositingDescendants = UINT64_C(1) << 34;
const uint64_t CompositingReasonPerspectiveWith3DDescendants = UINT64_C(1) << 35;
const uint64_t CompositingReasonPreserve3DWith3DDescendants = UINT64_C(1) << 36;
// TODO(sky): Unused 37 & 38
// The root layer is a special case that may be forced to be a layer, but also it needs to be
// a layer if anything else in the subtree is composited.
const uint64_t CompositingReasonRoot = UINT64_C(1) << 39;
// CompositedLayerMapping internal hierarchy reasons
const uint64_t CompositingReasonLayerForAncestorClip = UINT64_C(1) << 40;
const uint64_t CompositingReasonLayerForDescendantClip = UINT64_C(1) << 41;
const uint64_t CompositingReasonLayerForPerspective = UINT64_C(1) << 42;
// FIXME(sky): 43 is unused.
// FIXME(sky): 44 is unused.
const uint64_t CompositingReasonLayerForOverflowControlsHost = UINT64_C(1) << 45;
// FIXME(sky): 46 is unused.
const uint64_t CompositingReasonLayerForSquashingContents = UINT64_C(1) << 49;
const uint64_t CompositingReasonLayerForSquashingContainer = UINT64_C(1) << 50;
const uint64_t CompositingReasonLayerForForeground = UINT64_C(1) << 51;
const uint64_t CompositingReasonLayerForBackground = UINT64_C(1) << 52;
const uint64_t CompositingReasonLayerForMask = UINT64_C(1) << 53;
const uint64_t CompositingReasonLayerForClippingMask = UINT64_C(1) << 54;
// FIXME(sky): 55 is unused.
// Composited elements with inline transforms trigger assumed overlap so that
// we can update their transforms quickly.
const uint64_t CompositingReasonInlineTransform = UINT64_C(1) << 56;
// Various combinations of compositing reasons are defined here also, for more intutive and faster bitwise logic.
const uint64_t CompositingReasonComboAllDirectReasons =
CompositingReason3DTransform
| CompositingReasonVideo
| CompositingReasonCanvas
| CompositingReasonIFrame
| CompositingReasonBackfaceVisibilityHidden
| CompositingReasonActiveAnimation
| CompositingReasonTransitionProperty
| CompositingReasonOverflowScrollingTouch
| CompositingReasonOverflowScrollingParent
| CompositingReasonOutOfFlowClipping
| CompositingReasonWillChangeCompositingHint;
const uint64_t CompositingReasonComboAllDirectStyleDeterminedReasons =
CompositingReason3DTransform
| CompositingReasonBackfaceVisibilityHidden
| CompositingReasonActiveAnimation
| CompositingReasonTransitionProperty
| CompositingReasonWillChangeCompositingHint;
const uint64_t CompositingReasonComboCompositedDescendants =
CompositingReasonTransformWithCompositedDescendants
| CompositingReasonOpacityWithCompositedDescendants
| CompositingReasonMaskWithCompositedDescendants
| CompositingReasonFilterWithCompositedDescendants
| CompositingReasonClipsCompositingDescendants;
const uint64_t CompositingReasonCombo3DDescendants =
CompositingReasonPreserve3DWith3DDescendants
| CompositingReasonPerspectiveWith3DDescendants;
const uint64_t CompositingReasonComboAllStyleDeterminedReasons =
CompositingReasonComboAllDirectStyleDeterminedReasons
| CompositingReasonComboCompositedDescendants
| CompositingReasonCombo3DDescendants
| CompositingReasonInlineTransform;
const uint64_t CompositingReasonComboReasonsThatRequireOwnBacking =
CompositingReasonComboAllDirectReasons
| CompositingReasonOverlap
| CompositingReasonAssumedOverlap
| CompositingReasonNegativeZIndexChildren
| CompositingReasonScrollsWithRespectToSquashingLayer
| CompositingReasonSquashingClippingContainerMismatch
| CompositingReasonSquashingOpacityAncestorMismatch
| CompositingReasonSquashingTransformAncestorMismatch
| CompositingReasonSquashingFilterAncestorMismatch
| CompositingReasonSquashingWouldBreakPaintOrder
| CompositingReasonSquashingVideoIsDisallowed
| CompositingReasonSquashedLayerClipsCompositingDescendants
| CompositingReasonTransformWithCompositedDescendants
| CompositingReasonOpacityWithCompositedDescendants
| CompositingReasonMaskWithCompositedDescendants
| CompositingReasonFilterWithCompositedDescendants
| CompositingReasonPreserve3DWith3DDescendants; // preserve-3d has to create backing store to ensure that 3d-transformed elements intersect.
const uint64_t CompositingReasonComboSquashableReasons =
CompositingReasonOverlap
| CompositingReasonAssumedOverlap
| CompositingReasonOverflowScrollingParent;
typedef uint64_t CompositingReasons;
// Any reasons other than overlap or assumed overlap will require the layer to be separately compositing.
inline bool requiresCompositing(CompositingReasons reasons)
{
return reasons & ~CompositingReasonComboSquashableReasons;
}
// If the layer has overlap or assumed overlap, but no other reasons, then it should be squashed.
inline bool requiresSquashing(CompositingReasons reasons)
{
return !requiresCompositing(reasons) && (reasons & CompositingReasonComboSquashableReasons);
}
struct CompositingReasonStringMap {
CompositingReasons reason;
const char* shortName;
const char* description;
};
PLATFORM_EXPORT extern const CompositingReasonStringMap kCompositingReasonStringMap[];
PLATFORM_EXPORT extern size_t kNumberOfCompositingReasons;
} // namespace blink
#endif // SKY_ENGINE_PLATFORM_GRAPHICS_COMPOSITINGREASONS_H_