UpdateContext(const UpdateContext& other, const RenderLayer& layer) : m_compositingStackingContext(other.m_compositingStackingContext) , m_compositingAncestor(other.compositingContainer(layer)) { CompositingState compositingState = layer.compositingState(); if (compositingState != NotComposited && compositingState != PaintsIntoGroupedBacking) { m_compositingAncestor = &layer; if (layer.stackingNode()->isStackingContext()) m_compositingStackingContext = &layer; } }
RenderLayer* LinkHighlight::computeEnclosingCompositingLayer() { if (!m_node || !m_node->renderer()) return 0; // Find the nearest enclosing composited layer and attach to it. We may need to cross frame boundaries // to find a suitable layer. RenderObject* renderer = m_node->renderer(); RenderLayer* renderLayer; do { renderLayer = renderer->enclosingLayer()->enclosingCompositingLayerForRepaint(); if (!renderLayer) { renderer = renderer->frame()->ownerRenderer(); if (!renderer) return 0; } } while (!renderLayer); CompositedLayerMappingPtr compositedLayerMapping = renderLayer->compositingState() == PaintsIntoGroupedBacking ? renderLayer->groupedMapping() : renderLayer->compositedLayerMapping(); GraphicsLayer* newGraphicsLayer = renderLayer->compositingState() == PaintsIntoGroupedBacking ? compositedLayerMapping->squashingLayer() : compositedLayerMapping->mainGraphicsLayer(); m_clipLayer->setTransform(SkMatrix44(SkMatrix44::kIdentity_Constructor)); if (!newGraphicsLayer->drawsContent()) { if (renderLayer->scrollableArea() && renderLayer->scrollableArea()->usesCompositedScrolling()) { ASSERT(renderLayer->hasCompositedLayerMapping() && renderLayer->compositedLayerMapping()->scrollingContentsLayer()); newGraphicsLayer = compositedLayerMapping->scrollingContentsLayer(); } } if (m_currentGraphicsLayer != newGraphicsLayer) { if (m_currentGraphicsLayer) clearGraphicsLayerLinkHighlightPointer(); m_currentGraphicsLayer = newGraphicsLayer; m_currentGraphicsLayer->addLinkHighlight(this); } return renderLayer; }
RenderLayer* LinkHighlight::computeEnclosingCompositingLayer() { if (!m_node || !m_node->renderer()) return 0; // Find the nearest enclosing composited layer and attach to it. We may need to cross frame boundaries // to find a suitable layer. RenderObject* renderer = m_node->renderer(); RenderLayerModelObject* repaintContainer; do { repaintContainer = renderer->containerForRepaint(); if (!repaintContainer) { renderer = renderer->frame()->ownerRenderer(); if (!renderer) return 0; } } while (!repaintContainer); RenderLayer* renderLayer = repaintContainer->layer(); if (!renderLayer || renderLayer->compositingState() == NotComposited) return 0; GraphicsLayer* newGraphicsLayer = renderLayer->compositedLayerMapping()->mainGraphicsLayer(); m_clipLayer->setSublayerTransform(SkMatrix44()); if (!newGraphicsLayer->drawsContent()) { if (renderLayer->scrollableArea()->usesCompositedScrolling()) { ASSERT(renderLayer->hasCompositedLayerMapping() && renderLayer->compositedLayerMapping()->scrollingContentsLayer()); newGraphicsLayer = renderLayer->compositedLayerMapping()->scrollingContentsLayer(); } else ASSERT_NOT_REACHED(); } if (m_currentGraphicsLayer != newGraphicsLayer) { if (m_currentGraphicsLayer) clearGraphicsLayerLinkHighlightPointer(); m_currentGraphicsLayer = newGraphicsLayer; m_currentGraphicsLayer->addLinkHighlight(this); } return renderLayer; }