| // 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 "third_party/blink/renderer/platform/graphics/compositing_reasons.h" |
| |
| #include "third_party/blink/renderer/platform/wtf/std_lib_extras.h" |
| #include "third_party/blink/renderer/platform/wtf/text/string_builder.h" |
| |
| namespace blink { |
| |
| namespace { |
| |
| struct CompositingReasonStringMap { |
| CompositingReasons reason; |
| const char* short_name; |
| const char* description; |
| }; |
| |
| constexpr CompositingReasonStringMap kCompositingReasonsStringMap[] = { |
| {CompositingReason::k3DTransform, "transform3D", "Has a 3d transform"}, |
| {CompositingReason::kVideo, "video", "Is an accelerated video"}, |
| {CompositingReason::kCanvas, "canvas", |
| "Is an accelerated canvas, or is a display list backed canvas that was " |
| "promoted to a layer based on a performance heuristic."}, |
| {CompositingReason::kPlugin, "plugin", "Is an accelerated plugin"}, |
| {CompositingReason::kIFrame, "iFrame", "Is an accelerated iFrame"}, |
| {CompositingReason::kBackfaceVisibilityHidden, "backfaceVisibilityHidden", |
| "Has backface-visibility: hidden"}, |
| {CompositingReason::kActiveTransformAnimation, "activeTransformAnimation", |
| "Has an active accelerated transform animation or transition"}, |
| {CompositingReason::kActiveOpacityAnimation, "activeOpacityAnimation", |
| "Has an active accelerated opacity animation or transition"}, |
| {CompositingReason::kActiveFilterAnimation, "activeFilterAnimation", |
| "Has an active accelerated filter animation or transition"}, |
| {CompositingReason::kActiveBackdropFilterAnimation, |
| "activeBackdropFilterAnimation", |
| "Has an active accelerated backdrop filter animation or transition"}, |
| {CompositingReason::kTransitionProperty, "transitionProperty", |
| "Has an acceleratable transition property (active or inactive)"}, |
| {CompositingReason::kScrollDependentPosition, "scrollDependentPosition", |
| "Is fixed or sticky position"}, |
| {CompositingReason::kOverflowScrollingTouch, "overflowScrollingTouch", |
| "Is a scrollable overflow element"}, |
| {CompositingReason::kOverflowScrollingParent, "overflowScrollingParent", |
| "Scroll parent is not an ancestor"}, |
| {CompositingReason::kOutOfFlowClipping, "outOfFlowClipping", |
| "Has clipping ancestor"}, |
| {CompositingReason::kVideoOverlay, "videoOverlay", |
| "Is overlay controls for video"}, |
| {CompositingReason::kWillChangeCompositingHint, "willChange", |
| "Has a will-change compositing hint"}, |
| {CompositingReason::kBackdropFilter, "backdropFilter", |
| "Has a backdrop filter"}, |
| {CompositingReason::kRootScroller, "rootScroller", |
| "Is the document.rootScroller"}, |
| {CompositingReason::kAssumedOverlap, "assumedOverlap", |
| "Might overlap other composited content"}, |
| {CompositingReason::kOverlap, "overlap", |
| "Overlaps other composited content"}, |
| {CompositingReason::kNegativeZIndexChildren, "negativeZIndexChildren", |
| "Parent with composited negative z-index content"}, |
| {CompositingReason::kSquashingDisallowed, "squashingDisallowed", |
| "Layer was separately composited because it could not be squashed."}, |
| {CompositingReason::kTransformWithCompositedDescendants, |
| "transformWithCompositedDescendants", |
| "Has a transform that needs to be known by compositor because of " |
| "composited descendants"}, |
| {CompositingReason::kOpacityWithCompositedDescendants, |
| "opacityWithCompositedDescendants", |
| "Has opacity that needs to be applied by compositor because of composited " |
| "descendants"}, |
| {CompositingReason::kMaskWithCompositedDescendants, |
| "maskWithCompositedDescendants", |
| "Has a mask that needs to be known by compositor because of composited " |
| "descendants"}, |
| {CompositingReason::kReflectionWithCompositedDescendants, |
| "reflectionWithCompositedDescendants", |
| "Has a reflection that needs to be known by compositor because of " |
| "composited descendants"}, |
| {CompositingReason::kFilterWithCompositedDescendants, |
| "filterWithCompositedDescendants", |
| "Has a filter effect that needs to be known by compositor because of " |
| "composited descendants"}, |
| {CompositingReason::kBlendingWithCompositedDescendants, |
| "blendingWithCompositedDescendants", |
| "Has a blending effect that needs to be known by compositor because of " |
| "composited descendants"}, |
| {CompositingReason::kClipsCompositingDescendants, |
| "clipsCompositingDescendants", |
| "Has a clip that needs to be known by compositor because of composited " |
| "descendants"}, |
| {CompositingReason::kPerspectiveWith3DDescendants, |
| "perspectiveWith3DDescendants", |
| "Has a perspective transform that needs to be known by compositor because " |
| "of 3d descendants"}, |
| {CompositingReason::kPreserve3DWith3DDescendants, |
| "preserve3DWith3DDescendants", |
| "Has a preserves-3d property that needs to be known by compositor because " |
| "of 3d descendants"}, |
| {CompositingReason::kReflectionOfCompositedParent, |
| "reflectionOfCompositedParent", "Is a reflection of a composited layer"}, |
| {CompositingReason::kIsolateCompositedDescendants, |
| "isolateCompositedDescendants", |
| "Should isolate descendants to apply a blend effect"}, |
| {CompositingReason::kPositionFixedOrStickyWithCompositedDescendants, |
| "positionFixedOrStickyWithCompositedDescendants" |
| "Is a position:fixed or position:sticky element with composited " |
| "descendants"}, |
| {CompositingReason::kRoot, "root", "Is the root layer"}, |
| {CompositingReason::kLayerForAncestorClip, "layerForAncestorClip", |
| "Secondary layer, applies a clip due to a sibling in the compositing " |
| "tree"}, |
| {CompositingReason::kLayerForDescendantClip, "layerForDescendantClip", |
| "Secondary layer, to clip descendants of the owning layer"}, |
| {CompositingReason::kLayerForPerspective, "layerForPerspective", |
| "Secondary layer, to house the perspective transform for all descendants"}, |
| {CompositingReason::kLayerForHorizontalScrollbar, |
| "layerForHorizontalScrollbar", |
| "Secondary layer, the horizontal scrollbar layer"}, |
| {CompositingReason::kLayerForVerticalScrollbar, "layerForVerticalScrollbar", |
| "Secondary layer, the vertical scrollbar layer"}, |
| {CompositingReason::kLayerForOverflowControlsHost, |
| "layerForOverflowControlsHost", |
| "Secondary layer, the overflow controls host layer"}, |
| {CompositingReason::kLayerForScrollCorner, "layerForScrollCorner", |
| "Secondary layer, the scroll corner layer"}, |
| {CompositingReason::kLayerForScrollingContents, "layerForScrollingContents", |
| "Secondary layer, to house contents that can be scrolled"}, |
| {CompositingReason::kLayerForScrollingContainer, |
| "layerForScrollingContainer", |
| "Secondary layer, used to position the scrolling contents while " |
| "scrolling"}, |
| {CompositingReason::kLayerForSquashingContents, "layerForSquashingContents", |
| "Secondary layer, home for a group of squashable content"}, |
| {CompositingReason::kLayerForSquashingContainer, |
| "layerForSquashingContainer", |
| "Secondary layer, no-op layer to place the squashing layer correctly in " |
| "the composited layer tree"}, |
| {CompositingReason::kLayerForForeground, "layerForForeground", |
| "Secondary layer, to contain any normal flow and positive z-index " |
| "contents on top of a negative z-index layer"}, |
| {CompositingReason::kLayerForBackground, "layerForBackground", |
| "Secondary layer, to contain acceleratable background content"}, |
| {CompositingReason::kLayerForMask, "layerForMask", |
| "Secondary layer, to contain the mask contents"}, |
| {CompositingReason::kLayerForClippingMask, "layerForClippingMask", |
| "Secondary layer, for clipping mask"}, |
| {CompositingReason::kLayerForAncestorClippingMask, |
| "layerForAncestorClippingMask", |
| "Secondary layer, applies a clipping mask due to a sibling in the " |
| "composited layer tree"}, |
| {CompositingReason::kLayerForScrollingBlockSelection, |
| "layerForScrollingBlockSelection", |
| "Secondary layer, to house block selection gaps for composited scrolling " |
| "with no scrolling contents"}, |
| {CompositingReason::kLayerForDecoration, "layerForDecoration", |
| "Layer painted on top of other layers as decoration"}, |
| {CompositingReason::kInlineTransform, "inlineTransform", |
| "Has an inline transform, which causes subsequent layers to assume " |
| "overlap"}, |
| |
| }; |
| |
| } // anonymous namespace |
| |
| Vector<const char*> CompositingReason::ShortNames(CompositingReasons reasons) { |
| #define V(name) \ |
| static_assert( \ |
| CompositingReason::k##name == \ |
| kCompositingReasonsStringMap[CompositingReason::kE##name].reason, \ |
| "kCompositingReasonsStringMap needs update for " \ |
| "CompositingReason::k" #name); \ |
| FOR_EACH_COMPOSITING_REASON(V) |
| #undef V |
| |
| Vector<const char*> result; |
| if (reasons == kNone) |
| return result; |
| for (auto& map : kCompositingReasonsStringMap) { |
| if (reasons & map.reason) |
| result.push_back(map.short_name); |
| } |
| return result; |
| } |
| |
| Vector<const char*> CompositingReason::Descriptions( |
| CompositingReasons reasons) { |
| Vector<const char*> result; |
| if (reasons == kNone) |
| return result; |
| for (auto& map : kCompositingReasonsStringMap) { |
| if (reasons & map.reason) |
| result.push_back(map.description); |
| } |
| return result; |
| } |
| |
| String CompositingReason::ToString(CompositingReasons reasons) { |
| StringBuilder builder; |
| for (const char* name : ShortNames(reasons)) { |
| if (builder.length()) |
| builder.Append(','); |
| builder.Append(name); |
| } |
| return builder.ToString(); |
| } |
| |
| } // namespace blink |
