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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.
#include "platform/graphics/CompositingReasons.h"
#include "wtf/StdLibExtras.h"
namespace blink {
const CompositingReasonStringMap kCompositingReasonStringMap[] = {
{ CompositingReasonNone,
"Unknown",
"No reason given" },
{ CompositingReason3DTransform,
"transform3D",
"Has a 3d transform" },
{ CompositingReasonVideo,
"video",
"Is an accelerated video" },
{ CompositingReasonCanvas,
"canvas",
"Is an accelerated canvas, or is a display list backed canvas that was promoted to a layer based on a performance heuristic." },
{ CompositingReasonPlugin,
"plugin",
"Is an accelerated plugin" },
{ CompositingReasonIFrame,
"iFrame",
"Is an accelerated iFrame" },
{ CompositingReasonBackfaceVisibilityHidden,
"backfaceVisibilityHidden",
"Has backface-visibility: hidden" },
{ CompositingReasonActiveAnimation,
"activeAnimation",
"Has an active accelerated animation or transition" },
{ CompositingReasonTransitionProperty,
"transitionProperty",
"Has an acceleratable transition property (active or inactive)" },
{ CompositingReasonPositionFixed,
"positionFixed",
"Is fixed position" },
{ CompositingReasonOverflowScrollingTouch,
"overflowScrollingTouch",
"Is a scrollable overflow element" },
{ CompositingReasonOverflowScrollingParent,
"overflowScrollingParent",
"Scroll parent is not an ancestor" },
{ CompositingReasonOutOfFlowClipping,
"outOfFlowClipping",
"Has clipping ancestor" },
{ CompositingReasonVideoOverlay,
"videoOverlay",
"Is overlay controls for video" },
{ CompositingReasonWillChangeCompositingHint,
"willChange",
"Has a will-change compositing hint" },
{ CompositingReasonBackdropFilter,
"backdropFilter"
"Has a backdrop filter" },
{ CompositingReasonCompositorProxy,
"compositorProxy",
"Has a CompositorProxy object" },
{ CompositingReasonAssumedOverlap,
"assumedOverlap",
"Might overlap other composited content" },
{ CompositingReasonOverlap,
"overlap",
"Overlaps other composited content" },
{ CompositingReasonNegativeZIndexChildren,
"negativeZIndexChildren",
"Parent with composited negative z-index content" },
{ CompositingReasonScrollsWithRespectToSquashingLayer,
"scrollsWithRespectToSquashingLayer",
"Cannot be squashed since this layer scrolls with respect to the squashing layer" },
{ CompositingReasonSquashingSparsityExceeded,
"squashingSparsityExceeded",
"Cannot be squashed as the squashing layer would become too sparse" },
{ CompositingReasonSquashingClippingContainerMismatch,
"squashingClippingContainerMismatch",
"Cannot be squashed because this layer has a different clipping container than the squashing layer" },
{ CompositingReasonSquashingOpacityAncestorMismatch,
"squashingOpacityAncestorMismatch",
"Cannot be squashed because this layer has a different opacity ancestor than the squashing layer" },
{ CompositingReasonSquashingTransformAncestorMismatch,
"squashingTransformAncestorMismatch",
"Cannot be squashed because this layer has a different transform ancestor than the squashing layer" },
{ CompositingReasonSquashingFilterMismatch,
"squashingFilterAncestorMismatch",
"Cannot be squashed because this layer has a different filter ancestor than the squashing layer, or this layer has a filter" },
{ CompositingReasonSquashingWouldBreakPaintOrder,
"squashingWouldBreakPaintOrder",
"Cannot be squashed without breaking paint order" },
{ CompositingReasonSquashingVideoIsDisallowed,
"squashingVideoIsDisallowed",
"Squashing video is not supported" },
{ CompositingReasonSquashedLayerClipsCompositingDescendants,
"squashedLayerClipsCompositingDescendants",
"Squashing a layer that clips composited descendants is not supported." },
{ CompositingReasonSquashingLayoutPartIsDisallowed,
"squashingLayoutPartIsDisallowed",
"Squashing a frame, iframe or plugin is not supported." },
{ CompositingReasonSquashingReflectionIsDisallowed,
"squashingReflectionDisallowed",
"Squashing a element with a reflection is not supported." },
{ CompositingReasonSquashingBlendingIsDisallowed,
"squashingBlendingDisallowed",
"Squashing a layer with blending is not supported." },
{ CompositingReasonSquashingNearestFixedPositionMismatch,
"squashingNearestFixedPositionMismatch",
"Cannot be squashed because this layer has a different nearest fixed position layer than the squashing layer" },
{ CompositingReasonScrollChildWithCompositedDescendants,
"scrollChildWithCompositedDescendants",
"Squashing a scroll child with composited descendants is not supported." },
{ CompositingReasonSquashingLayerIsAnimating,
"squashingLayerIsAnimating",
"Cannot squash into a layer that is animating." },
{ CompositingReasonTransformWithCompositedDescendants,
"transformWithCompositedDescendants",
"Has a transform that needs to be known by compositor because of composited descendants" },
{ CompositingReasonOpacityWithCompositedDescendants,
"opacityWithCompositedDescendants",
"Has opacity that needs to be applied by compositor because of composited descendants" },
{ CompositingReasonMaskWithCompositedDescendants,
"maskWithCompositedDescendants",
"Has a mask that needs to be known by compositor because of composited descendants" },
{ CompositingReasonReflectionWithCompositedDescendants,
"reflectionWithCompositedDescendants",
"Has a reflection that needs to be known by compositor because of composited descendants" },
{ CompositingReasonFilterWithCompositedDescendants,
"filterWithCompositedDescendants",
"Has a filter effect that needs to be known by compositor because of composited descendants" },
{ CompositingReasonBlendingWithCompositedDescendants,
"blendingWithCompositedDescendants",
"Has a blenidng effect that needs to be known by compositor because of composited descendants" },
{ CompositingReasonClipsCompositingDescendants,
"clipsCompositingDescendants",
"Has a clip that needs to be known by compositor because of composited descendants" },
{ CompositingReasonPerspectiveWith3DDescendants,
"perspectiveWith3DDescendants",
"Has a perspective transform that needs to be known by compositor because of 3d descendants" },
{ CompositingReasonPreserve3DWith3DDescendants,
"preserve3DWith3DDescendants",
"Has a preserves-3d property that needs to be known by compositor because of 3d descendants" },
{ CompositingReasonReflectionOfCompositedParent,
"reflectionOfCompositedParent",
"Is a reflection of a composited layer" },
{ CompositingReasonIsolateCompositedDescendants,
"isolateCompositedDescendants",
"Should isolate descendants to apply a blend effect" },
{ CompositingReasonPositionFixedWithCompositedDescendants,
"positionFixedWithCompositedDescendants"
"Is a position:fixed element with composited descendants" },
{ CompositingReasonRoot,
"root",
"Is the root layer" },
{ CompositingReasonLayerForAncestorClip,
"layerForAncestorClip",
"Secondary layer, applies a clip due to a sibling in the compositing tree" },
{ CompositingReasonLayerForDescendantClip,
"layerForDescendantClip",
"Secondary layer, to clip descendants of the owning layer" },
{ CompositingReasonLayerForPerspective,
"layerForPerspective",
"Secondary layer, to house the perspective transform for all descendants" },
{ CompositingReasonLayerForHorizontalScrollbar,
"layerForHorizontalScrollbar",
"Secondary layer, the horizontal scrollbar layer" },
{ CompositingReasonLayerForVerticalScrollbar,
"layerForVerticalScrollbar",
"Secondary layer, the vertical scrollbar layer" },
{ CompositingReasonLayerForOverflowControlsHost,
"layerForOverflowControlsHost",
"Secondary layer, the overflow controls host layer" },
{ CompositingReasonLayerForScrollCorner,
"layerForScrollCorner",
"Secondary layer, the scroll corner layer" },
{ CompositingReasonLayerForScrollingContents,
"layerForScrollingContents",
"Secondary layer, to house contents that can be scrolled" },
{ CompositingReasonLayerForScrollingContainer,
"layerForScrollingContainer",
"Secondary layer, used to position the scolling contents while scrolling" },
{ CompositingReasonLayerForSquashingContents,
"layerForSquashingContents",
"Secondary layer, home for a group of squashable content" },
{ CompositingReasonLayerForSquashingContainer,
"layerForSquashingContainer",
"Secondary layer, no-op layer to place the squashing layer correctly in the composited layer tree" },
{ CompositingReasonLayerForForeground,
"layerForForeground",
"Secondary layer, to contain any normal flow and positive z-index contents on top of a negative z-index layer" },
{ CompositingReasonLayerForBackground,
"layerForBackground",
"Secondary layer, to contain acceleratable background content" },
{ CompositingReasonLayerForMask,
"layerForMask",
"Secondary layer, to contain the mask contents" },
{ CompositingReasonLayerForClippingMask,
"layerForClippingMask",
"Secondary layer, for clipping mask" },
{ CompositingReasonLayerForScrollingBlockSelection,
"layerForScrollingBlockSelection",
"Secondary layer, to house block selection gaps for composited scrolling with no scrolling contents" },
{ CompositingReasonInlineTransform,
"inlineTransform",
"Has an inline transform, which causes subsequent layers to assume overlap" },
};
const size_t kNumberOfCompositingReasons = WTF_ARRAY_LENGTH(kCompositingReasonStringMap);
} // namespace blink
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