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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 #include "config.h" | 5 #include "config.h" |
| 6 #include "core/layout/compositing/CompositingReasonFinder.h" | 6 #include "core/layout/compositing/CompositingReasonFinder.h" |
| 7 | 7 |
| 8 #include "core/CSSPropertyNames.h" | 8 #include "core/CSSPropertyNames.h" |
| 9 #include "core/dom/Document.h" | 9 #include "core/dom/Document.h" |
| 10 #include "core/frame/FrameView.h" | 10 #include "core/frame/FrameView.h" |
| (...skipping 29 matching lines...) Expand all Loading... |
| 40 } | 40 } |
| 41 | 41 |
| 42 bool CompositingReasonFinder::isMainFrame() const | 42 bool CompositingReasonFinder::isMainFrame() const |
| 43 { | 43 { |
| 44 // FIXME: LocalFrame::isMainFrame() is probably better. | 44 // FIXME: LocalFrame::isMainFrame() is probably better. |
| 45 return !m_layoutView.document().ownerElement(); | 45 return !m_layoutView.document().ownerElement(); |
| 46 } | 46 } |
| 47 | 47 |
| 48 CompositingReasons CompositingReasonFinder::directReasons(const DeprecatedPaintL
ayer* layer) const | 48 CompositingReasons CompositingReasonFinder::directReasons(const DeprecatedPaintL
ayer* layer) const |
| 49 { | 49 { |
| 50 if (RuntimeEnabledFeatures::slimmingPaintCompositorLayerizationEnabled()) | 50 if (RuntimeEnabledFeatures::slimmingPaintV2Enabled()) |
| 51 return CompositingReasonNone; | 51 return CompositingReasonNone; |
| 52 | 52 |
| 53 ASSERT(potentialCompositingReasonsFromStyle(layer->layoutObject()) == layer-
>potentialCompositingReasonsFromStyle()); | 53 ASSERT(potentialCompositingReasonsFromStyle(layer->layoutObject()) == layer-
>potentialCompositingReasonsFromStyle()); |
| 54 CompositingReasons styleDeterminedDirectCompositingReasons = layer->potentia
lCompositingReasonsFromStyle() & CompositingReasonComboAllDirectStyleDeterminedR
easons; | 54 CompositingReasons styleDeterminedDirectCompositingReasons = layer->potentia
lCompositingReasonsFromStyle() & CompositingReasonComboAllDirectStyleDeterminedR
easons; |
| 55 | 55 |
| 56 // Apply optimizations for scroll-blocks-on which require comparing style be
tween objects. | 56 // Apply optimizations for scroll-blocks-on which require comparing style be
tween objects. |
| 57 if ((styleDeterminedDirectCompositingReasons & CompositingReasonScrollBlocks
On) && !requiresCompositingForScrollBlocksOn(layer->layoutObject())) | 57 if ((styleDeterminedDirectCompositingReasons & CompositingReasonScrollBlocks
On) && !requiresCompositingForScrollBlocksOn(layer->layoutObject())) |
| 58 styleDeterminedDirectCompositingReasons &= ~CompositingReasonScrollBlock
sOn; | 58 styleDeterminedDirectCompositingReasons &= ~CompositingReasonScrollBlock
sOn; |
| 59 | 59 |
| 60 return styleDeterminedDirectCompositingReasons | nonStyleDeterminedDirectRea
sons(layer); | 60 return styleDeterminedDirectCompositingReasons | nonStyleDeterminedDirectRea
sons(layer); |
| 61 } | 61 } |
| 62 | 62 |
| 63 // This information doesn't appear to be incorporated into CompositingReasons. | 63 // This information doesn't appear to be incorporated into CompositingReasons. |
| 64 bool CompositingReasonFinder::requiresCompositingForScrollableFrame() const | 64 bool CompositingReasonFinder::requiresCompositingForScrollableFrame() const |
| 65 { | 65 { |
| 66 // Need this done first to determine overflow. | 66 // Need this done first to determine overflow. |
| 67 ASSERT(!m_layoutView.needsLayout()); | 67 ASSERT(!m_layoutView.needsLayout()); |
| 68 if (isMainFrame()) | 68 if (isMainFrame()) |
| 69 return false; | 69 return false; |
| 70 | 70 |
| 71 if (!(m_compositingTriggers & ScrollableInnerFrameTrigger)) | 71 if (!(m_compositingTriggers & ScrollableInnerFrameTrigger)) |
| 72 return false; | 72 return false; |
| 73 | 73 |
| 74 return m_layoutView.frameView()->isScrollable(); | 74 return m_layoutView.frameView()->isScrollable(); |
| 75 } | 75 } |
| 76 | 76 |
| 77 CompositingReasons CompositingReasonFinder::potentialCompositingReasonsFromStyle
(LayoutObject* layoutObject) const | 77 CompositingReasons CompositingReasonFinder::potentialCompositingReasonsFromStyle
(LayoutObject* layoutObject) const |
| 78 { | 78 { |
| 79 if (RuntimeEnabledFeatures::slimmingPaintCompositorLayerizationEnabled()) | 79 if (RuntimeEnabledFeatures::slimmingPaintV2Enabled()) |
| 80 return CompositingReasonNone; | 80 return CompositingReasonNone; |
| 81 | 81 |
| 82 CompositingReasons reasons = CompositingReasonNone; | 82 CompositingReasons reasons = CompositingReasonNone; |
| 83 | 83 |
| 84 const ComputedStyle& style = layoutObject->styleRef(); | 84 const ComputedStyle& style = layoutObject->styleRef(); |
| 85 | 85 |
| 86 if (requiresCompositingForTransform(layoutObject)) | 86 if (requiresCompositingForTransform(layoutObject)) |
| 87 reasons |= CompositingReason3DTransform; | 87 reasons |= CompositingReason3DTransform; |
| 88 | 88 |
| 89 if (style.backfaceVisibility() == BackfaceVisibilityHidden) | 89 if (style.backfaceVisibility() == BackfaceVisibilityHidden) |
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| 230 // Either way, we don't need to require compositing for scroll block
s on. This avoids | 230 // Either way, we don't need to require compositing for scroll block
s on. This avoids |
| 231 // enabling compositing by default, and avoids cluttering the root l
ayers compositing reasons. | 231 // enabling compositing by default, and avoids cluttering the root l
ayers compositing reasons. |
| 232 return false; | 232 return false; |
| 233 } | 233 } |
| 234 } | 234 } |
| 235 | 235 |
| 236 return true; | 236 return true; |
| 237 } | 237 } |
| 238 | 238 |
| 239 } | 239 } |
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