src/third_party/WebKit/Source/platform/graphics/CompositingReasons.cpp

   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
   3 // found in the LICENSE file.
   4
   5 #include "config.h"
   6 #include "platform/graphics/CompositingReasons.h"
   7
   8 #include "wtf/StdLibExtras.h"
   9
  10 namespace blink {
  11
  12 const CompositingReasonStringMap kCompositingReasonStringMap[] = {
  13     { CompositingReasonNone,
  14         "Unknown",
  15         "No reason given" },
  16     { CompositingReason3DTransform,
  17         "transform3D",
  18         "Has a 3d transform" },
  19     { CompositingReasonVideo,
  20         "video",
  21         "Is an accelerated video" },
  22     { CompositingReasonCanvas,
  23         "canvas",
  24         "Is an accelerated canvas" },
  25     { CompositingReasonPlugin,
  26         "plugin",
  27         "Is an accelerated plugin" },
  28     { CompositingReasonIFrame,
  29         "iFrame",
  30         "Is an accelerated iFrame" },
  31     { CompositingReasonBackfaceVisibilityHidden,
  32         "backfaceVisibilityHidden",
  33         "Has backface-visibility: hidden" },
  34     { CompositingReasonActiveAnimation,
  35         "activeAnimation",
  36         "Has an active accelerated animation or transition" },
  37     { CompositingReasonTransitionProperty,
  38         "transitionProperty",
  39         "Has an acceleratable transition property (active or inactive)" },
  40     { CompositingReasonPositionFixed,
  41         "positionFixed",
  42         "Is fixed position" },
  43     { CompositingReasonOverflowScrollingTouch,
  44         "overflowScrollingTouch",
  45         "Is a scrollable overflow element" },
  46     { CompositingReasonOverflowScrollingParent,
  47         "overflowScrollingParent",
  48         "Scroll parent is not an ancestor" },
  49     { CompositingReasonOutOfFlowClipping,
  50         "outOfFlowClipping",
  51         "Has clipping ancestor" },
  52     { CompositingReasonVideoOverlay,
  53         "videoOverlay",
  54         "Is overlay controls for video" },
  55     { CompositingReasonWillChangeCompositingHint,
  56         "willChange",
  57         "Has a will-change compositing hint" },
  58     { CompositingReasonAssumedOverlap,
  59         "assumedOverlap",
  60         "Might overlap other composited content" },
  61     { CompositingReasonOverlap,
  62         "overlap",
  63         "Overlaps other composited content" },
  64     { CompositingReasonNegativeZIndexChildren,
  65         "negativeZIndexChildren",
  66         "Parent with composited negative z-index content" },
  67     { CompositingReasonScrollsWithRespectToSquashingLayer,
  68         "scrollsWithRespectToSquashingLayer",
  69         "Cannot be squashed since this layer scrolls with respect to the squashing layer" },
  70     { CompositingReasonSquashingSparsityExceeded,
  71         "squashingSparsityExceeded",
  72         "Cannot be squashed as the squashing layer would become too sparse" },
  73     { CompositingReasonSquashingClippingContainerMismatch,
  74         "squashingClippingContainerMismatch",
  75         "Cannot be squashed because this layer has a different clipping container than the squashing layer" },
  76     { CompositingReasonSquashingOpacityAncestorMismatch,
  77         "squashingOpacityAncestorMismatch",
  78         "Cannot be squashed because this layer has a different opacity ancestor than the squashing layer" },
  79     { CompositingReasonSquashingTransformAncestorMismatch,
  80         "squashingTransformAncestorMismatch",
  81         "Cannot be squashed because this layer has a different transform ancestor than the squashing layer" },
  82     { CompositingReasonSquashingFilterMismatch,
  83         "squashingFilterAncestorMismatch",
  84         "Cannot be squashed because this layer has a different filter ancestor than the squashing layer, or this layer has a filter" },
  85     { CompositingReasonSquashingWouldBreakPaintOrder,
  86         "squashingWouldBreakPaintOrder",
  87         "Cannot be squashed without breaking paint order" },
  88     { CompositingReasonSquashingVideoIsDisallowed,
  89         "squashingVideoIsDisallowed",
  90         "Squashing video is not supported" },
  91     { CompositingReasonSquashedLayerClipsCompositingDescendants,
  92         "squashedLayerClipsCompositingDescendants",
  93         "Squashing a layer that clips composited descendants is not supported." },
  94     { CompositingReasonSquashingRenderPartIsDisallowed,
  95         "squashingRenderPartIsDisallowed",
  96         "Squashing a frame, iframe or plugin is not supported." },
  97     { CompositingReasonSquashingReflectionIsDisallowed,
  98         "squashingReflectionDisallowed",
  99         "Squashing a element with a reflection is not supported." },
 100     { CompositingReasonSquashingBlendingIsDisallowed,
 101         "squashingBlendingDisallowed",
 102         "Squashing a layer with blending is not supported." },
 103     { CompositingReasonTransformWithCompositedDescendants,
 104         "transformWithCompositedDescendants",
 105         "Has a transform that needs to be known by compositor because of composited descendants" },
 106     { CompositingReasonOpacityWithCompositedDescendants,
 107         "opacityWithCompositedDescendants",
 108         "Has opacity that needs to be applied by compositor because of composited descendants" },
 109     { CompositingReasonMaskWithCompositedDescendants,
 110         "maskWithCompositedDescendants",
 111         "Has a mask that needs to be known by compositor because of composited descendants" },
 112     { CompositingReasonReflectionWithCompositedDescendants,
 113         "reflectionWithCompositedDescendants",
 114         "Has a reflection that needs to be known by compositor because of composited descendants" },
 115     { CompositingReasonFilterWithCompositedDescendants,
 116         "filterWithCompositedDescendants",
 117         "Has a filter effect that needs to be known by compositor because of composited descendants" },
 118     { CompositingReasonBlendingWithCompositedDescendants,
 119         "blendingWithCompositedDescendants",
 120         "Has a blenidng effect that needs to be known by compositor because of composited descendants" },
 121     { CompositingReasonClipsCompositingDescendants,
 122         "clipsCompositingDescendants",
 123         "Has a clip that needs to be known by compositor because of composited descendants" },
 124     { CompositingReasonPerspectiveWith3DDescendants,
 125         "perspectiveWith3DDescendants",
 126         "Has a perspective transform that needs to be known by compositor because of 3d descendants" },
 127     { CompositingReasonPreserve3DWith3DDescendants,
 128         "preserve3DWith3DDescendants",
 129         "Has a preserves-3d property that needs to be known by compositor because of 3d descendants" },
 130     { CompositingReasonReflectionOfCompositedParent,
 131         "reflectionOfCompositedParent",
 132         "Is a reflection of a composited layer" },
 133     { CompositingReasonIsolateCompositedDescendants,
 134         "isolateCompositedDescendants",
 135         "Should isolate descendants to apply a blend effect" },
 136     { CompositingReasonRoot,
 137         "root",
 138         "Is the root layer" },
 139     { CompositingReasonLayerForAncestorClip,
 140         "layerForAncestorClip",
 141         "Secondary layer, applies a clip due to a sibling in the compositing tree" },
 142     { CompositingReasonLayerForDescendantClip,
 143         "layerForDescendantClip",
 144         "Secondary layer, to clip descendants of the owning layer" },
 145     { CompositingReasonLayerForPerspective,
 146         "layerForPerspective",
 147         "Secondary layer, to house the perspective transform for all descendants" },
 148     { CompositingReasonLayerForHorizontalScrollbar,
 149         "layerForHorizontalScrollbar",
 150         "Secondary layer, the horizontal scrollbar layer" },
 151     { CompositingReasonLayerForVerticalScrollbar,
 152         "layerForVerticalScrollbar",
 153         "Secondary layer, the vertical scrollbar layer" },
 154     { CompositingReasonLayerForOverflowControlsHost,
 155         "layerForOverflowControlsHost",
 156         "Secondary layer, the overflow controls host layer" },
 157     { CompositingReasonLayerForScrollCorner,
 158         "layerForScrollCorner",
 159         "Secondary layer, the scroll corner layer" },
 160     { CompositingReasonLayerForScrollingContents,
 161         "layerForScrollingContents",
 162         "Secondary layer, to house contents that can be scrolled" },
 163     { CompositingReasonLayerForScrollingContainer,
 164         "layerForScrollingContainer",
 165         "Secondary layer, used to position the scolling contents while scrolling" },
 166     { CompositingReasonLayerForSquashingContents,
 167         "layerForSquashingContents",
 168         "Secondary layer, home for a group of squashable content" },
 169     { CompositingReasonLayerForSquashingContainer,
 170         "layerForSquashingContainer",
 171         "Secondary layer, no-op layer to place the squashing layer correctly in the composited layer tree" },
 172     { CompositingReasonLayerForForeground,
 173         "layerForForeground",
 174         "Secondary layer, to contain any normal flow and positive z-index contents on top of a negative z-index layer" },
 175     { CompositingReasonLayerForBackground,
 176         "layerForBackground",
 177         "Secondary layer, to contain acceleratable background content" },
 178     { CompositingReasonLayerForMask,
 179         "layerForMask",
 180         "Secondary layer, to contain the mask contents" },
 181     { CompositingReasonLayerForClippingMask,
 182         "layerForClippingMask",
 183         "Secondary layer, for clipping mask" },
 184     { CompositingReasonLayerForScrollingBlockSelection,
 185         "layerForScrollingBlockSelection",
 186         "Secondary layer, to house block selection gaps for composited scrolling with no scrolling contents" },
 187     { CompositingReasonInlineTransform,
 188         "inlineTransform",
 189         "Has an inline transform, which causes subsequent layers to assume overlap" },
 190 };
 191
 192 size_t kNumberOfCompositingReasons = WTF_ARRAY_LENGTH(kCompositingReasonStringMap);
 193
 194 } // namespace blink