Change determineChange(const RenderStyle& s1, const RenderStyle& s2) { if (s1.display() != s2.display()) return Detach; if (s1.hasPseudoStyle(FIRST_LETTER) != s2.hasPseudoStyle(FIRST_LETTER)) return Detach; // We just detach if a renderer acquires or loses a column-span, since spanning elements // typically won't contain much content. if (s1.columnSpan() != s2.columnSpan()) return Detach; if (!s1.contentDataEquivalent(&s2)) return Detach; // When text-combine property has been changed, we need to prepare a separate renderer object. // When text-combine is on, we use RenderCombineText, otherwise RenderText. // https://bugs.webkit.org/show_bug.cgi?id=55069 if (s1.hasTextCombine() != s2.hasTextCombine()) return Detach; // We need to reattach the node, so that it is moved to the correct RenderFlowThread. if (s1.flowThread() != s2.flowThread()) return Detach; // When the region thread has changed, we need to prepare a separate render region object. if (s1.regionThread() != s2.regionThread()) return Detach; // FIXME: Multicolumn regions not yet supported (http://dev.w3.org/csswg/css-regions/#multi-column-regions) // When the node has region style and changed its multicol style, we have to prepare // a separate render region object. if (s1.hasFlowFrom() && (s1.specifiesColumns() != s2.specifiesColumns())) return Detach; if (s1 != s2) { if (s1.inheritedNotEqual(&s2)) return Inherit; return NoInherit; } // If the pseudoStyles have changed, we want any StyleChange that is not NoChange // because setStyle will do the right thing with anything else. if (s1.hasAnyPublicPseudoStyles()) { for (PseudoId pseudoId = FIRST_PUBLIC_PSEUDOID; pseudoId < FIRST_INTERNAL_PSEUDOID; pseudoId = static_cast<PseudoId>(pseudoId + 1)) { if (s1.hasPseudoStyle(pseudoId)) { RenderStyle* ps2 = s2.getCachedPseudoStyle(pseudoId); if (!ps2) return NoInherit; RenderStyle* ps1 = s1.getCachedPseudoStyle(pseudoId); if (!ps1 || *ps1 != *ps2) return NoInherit; } } } return NoChange; }
RenderStyle RenderNamedFlowFragment::createStyle(const RenderStyle& parentStyle) { auto style = RenderStyle::createAnonymousStyleWithDisplay(parentStyle, BLOCK); style.setFlowThread(parentStyle.flowThread()); style.setRegionThread(parentStyle.regionThread()); style.setRegionFragment(parentStyle.regionFragment()); return style; }
PassRef<RenderStyle> RenderNamedFlowFragment::createStyle(const RenderStyle& parentStyle) { auto style = RenderStyle::createAnonymousStyleWithDisplay(&parentStyle, BLOCK); style.get().setFlowThread(parentStyle.flowThread()); style.get().setRegionThread(parentStyle.regionThread()); style.get().setRegionFragment(parentStyle.regionFragment()); #if ENABLE(CSS_SHAPES) && ENABLE(CSS_SHAPE_INSIDE) style.get().setShapeInside(parentStyle.shapeInside()); #endif return style; }
static void registerElementForFlowThreadIfNeeded(Element& element, const RenderStyle& style) { if (!element.shouldMoveToFlowThread(style)) return; FlowThreadController& flowThreadController = element.document().renderView()->flowThreadController(); flowThreadController.registerNamedFlowContentElement(element, flowThreadController.ensureRenderFlowThreadWithName(style.flowThread())); }