#ifndef RenderElement_h
#define RenderElement_h
#include "AnimationController.h"
#include "RenderObject.h"
namespace WebCore {
class ControlStates;
class RenderElement : public RenderObject {
public:
virtual ~RenderElement();
static RenderPtr<RenderElement> createFor(Element&, PassRef<RenderStyle>);
bool hasInitializedStyle() const { return m_hasInitializedStyle; }
RenderStyle& style() const { return const_cast<RenderStyle&>(m_style.get()); }
RenderStyle& firstLineStyle() const;
void initializeStyle();
void setStyle(PassRef<RenderStyle>);
void setAnimatableStyle(PassRef<RenderStyle>);
Element* element() const { return toElement(RenderObject::node()); }
Element* nonPseudoElement() const { return toElement(RenderObject::nonPseudoNode()); }
Element* generatingElement() const;
RenderObject* firstChild() const { return m_firstChild; }
RenderObject* lastChild() const { return m_lastChild; }
bool isRenderLayerModelObject() const;
bool isBoxModelObject() const;
bool isRenderBlock() const;
bool isRenderBlockFlow() const;
bool isRenderReplaced() const;
bool isRenderInline() const;
bool isRenderNamedFlowFragmentContainer() const;
virtual bool isChildAllowed(const RenderObject&, const RenderStyle&) const { return true; }
virtual void addChild(RenderObject* newChild, RenderObject* beforeChild = 0);
virtual void addChildIgnoringContinuation(RenderObject* newChild, RenderObject* beforeChild = 0) { return addChild(newChild, beforeChild); }
virtual RenderObject* removeChild(RenderObject&);
void addLayers(RenderLayer* parentLayer);
void removeLayers(RenderLayer* parentLayer);
void moveLayers(RenderLayer* oldParent, RenderLayer* newParent);
RenderLayer* findNextLayer(RenderLayer* parentLayer, RenderObject* startPoint, bool checkParent = true);
enum NotifyChildrenType { NotifyChildren, DontNotifyChildren };
void insertChildInternal(RenderObject*, RenderObject* beforeChild, NotifyChildrenType);
RenderObject* removeChildInternal(RenderObject&, NotifyChildrenType);
virtual RenderElement* hoverAncestor() const;
virtual void dirtyLinesFromChangedChild(RenderObject*) { }
bool ancestorLineBoxDirty() const { return m_ancestorLineBoxDirty; }
void setAncestorLineBoxDirty(bool f = true);
void setChildNeedsLayout(MarkingBehavior = MarkContainingBlockChain);
void clearChildNeedsLayout();
void setNeedsPositionedMovementLayout(const RenderStyle* oldStyle);
void setNeedsSimplifiedNormalFlowLayout();
virtual void paint(PaintInfo&, const LayoutPoint&) = 0;
virtual void layout();
void layoutIfNeeded() { if (needsLayout()) layout(); }
RenderElement& rendererForRootBackground();
PassRefPtr<RenderStyle> uncachedFirstLineStyle(RenderStyle*) const;
void setStyleInternal(PassRef<RenderStyle> style) { m_style = WTF::move(style); }
bool repaintAfterLayoutIfNeeded(const RenderLayerModelObject* repaintContainer, const LayoutRect& oldBounds, const LayoutRect& oldOutlineBox, const LayoutRect* newBoundsPtr = nullptr, const LayoutRect* newOutlineBoxPtr = nullptr);
bool borderImageIsLoadedAndCanBeRendered() const;
bool createsGroup() const { return isTransparent() || hasMask() || hasFilter() || hasBlendMode(); }
bool isTransparent() const { return style().opacity() < 1.0f; }
float opacity() const { return style().opacity(); }
bool visibleToHitTesting() const { return style().visibility() == VISIBLE && style().pointerEvents() != PE_NONE; }
bool hasBackground() const { return style().hasBackground(); }
bool hasMask() const { return style().hasMask(); }
bool hasClip() const { return isOutOfFlowPositioned() && style().hasClip(); }
bool hasClipOrOverflowClip() const { return hasClip() || hasOverflowClip(); }
bool hasClipPath() const { return style().clipPath(); }
bool hasHiddenBackface() const { return style().backfaceVisibility() == BackfaceVisibilityHidden; }
#if ENABLE(CSS_FILTERS)
bool hasFilter() const { return style().hasFilter(); }
#else
bool hasFilter() const { return false; }
#endif
#if ENABLE(CSS_COMPOSITING)
bool hasBlendMode() const { return style().hasBlendMode(); }
#else
bool hasBlendMode() const { return false; }
#endif
#if ENABLE(CSS_SHAPES)
bool hasShapeOutside() const { return style().shapeOutside(); }
#else
bool hasShapeOutside() const { return false; }
#endif
bool repaintForPausedImageAnimationsIfNeeded(const IntRect& visibleRect);
bool hasPausedImageAnimations() const { return m_hasPausedImageAnimations; }
void setHasPausedImageAnimations(bool b) { m_hasPausedImageAnimations = b; }
RenderNamedFlowThread* renderNamedFlowThreadWrapper();
void setRenderBoxNeedsLazyRepaint(bool b) { m_renderBoxNeedsLazyRepaint = b; }
bool renderBoxNeedsLazyRepaint() const { return m_renderBoxNeedsLazyRepaint; }
protected:
enum BaseTypeFlags {
RenderLayerModelObjectFlag = 1 << 0,
RenderBoxModelObjectFlag = 1 << 1,
RenderInlineFlag = 1 << 2,
RenderReplacedFlag = 1 << 3,
RenderBlockFlag = 1 << 4,
RenderBlockFlowFlag = 1 << 5,
};
RenderElement(Element&, PassRef<RenderStyle>, unsigned baseTypeFlags);
RenderElement(Document&, PassRef<RenderStyle>, unsigned baseTypeFlags);
bool layerCreationAllowedForSubtree() const;
enum StylePropagationType { PropagateToAllChildren, PropagateToBlockChildrenOnly };
void propagateStyleToAnonymousChildren(StylePropagationType);
LayoutUnit valueForLength(const Length&, LayoutUnit maximumValue) const;
LayoutUnit minimumValueForLength(const Length&, LayoutUnit maximumValue, bool roundPercentages = false) const;
void setFirstChild(RenderObject* child) { m_firstChild = child; }
void setLastChild(RenderObject* child) { m_lastChild = child; }
void destroyLeftoverChildren();
virtual void styleWillChange(StyleDifference, const RenderStyle& newStyle);
virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);
virtual void insertedIntoTree() override;
virtual void willBeRemovedFromTree() override;
virtual void willBeDestroyed() override;
void setRenderInlineAlwaysCreatesLineBoxes(bool b) { m_renderInlineAlwaysCreatesLineBoxes = b; }
bool renderInlineAlwaysCreatesLineBoxes() const { return m_renderInlineAlwaysCreatesLineBoxes; }
static bool hasControlStatesForRenderer(const RenderObject*);
static ControlStates* controlStatesForRenderer(const RenderObject*);
static void removeControlStatesForRenderer(const RenderObject*);
static void addControlStatesForRenderer(const RenderObject*, ControlStates*);
private:
RenderElement(ContainerNode&, PassRef<RenderStyle>, unsigned baseTypeFlags);
void node() const = delete;
void nonPseudoNode() const = delete;
void generatingNode() const = delete;
void isText() const = delete;
void isRenderElement() const = delete;
virtual RenderObject* firstChildSlow() const override final { return firstChild(); }
virtual RenderObject* lastChildSlow() const override final { return lastChild(); }
bool shouldRepaintForStyleDifference(StyleDifference) const;
bool hasImmediateNonWhitespaceTextChildOrBorderOrOutline() const;
void updateFillImages(const FillLayer*, const FillLayer*);
void updateImage(StyleImage*, StyleImage*);
#if ENABLE(CSS_SHAPES)
void updateShapeImage(const ShapeValue*, const ShapeValue*);
#endif
StyleDifference adjustStyleDifference(StyleDifference, unsigned contextSensitiveProperties) const;
RenderStyle* cachedFirstLineStyle() const;
virtual void newImageAnimationFrameAvailable(CachedImage&) final override;
unsigned m_baseTypeFlags : 6;
bool m_ancestorLineBoxDirty : 1;
bool m_hasInitializedStyle : 1;
bool m_renderInlineAlwaysCreatesLineBoxes : 1;
bool m_renderBoxNeedsLazyRepaint : 1;
bool m_hasPausedImageAnimations : 1;
RenderObject* m_firstChild;
RenderObject* m_lastChild;
Ref<RenderStyle> m_style;
static bool s_affectsParentBlock;
static bool s_noLongerAffectsParentBlock;
};
RENDER_OBJECT_TYPE_CASTS(RenderElement, isRenderElement())
inline void RenderElement::setAnimatableStyle(PassRef<RenderStyle> style)
{
setStyle(animation().updateAnimations(*this, WTF::move(style)));
}
inline RenderStyle& RenderElement::firstLineStyle() const
{
return document().styleSheetCollection().usesFirstLineRules() ? *cachedFirstLineStyle() : style();
}
inline void RenderElement::setAncestorLineBoxDirty(bool f)
{
m_ancestorLineBoxDirty = f;
if (m_ancestorLineBoxDirty)
setNeedsLayout();
}
inline void RenderElement::setChildNeedsLayout(MarkingBehavior markParents)
{
ASSERT(!isSetNeedsLayoutForbidden());
if (normalChildNeedsLayout())
return;
setNormalChildNeedsLayoutBit(true);
if (markParents == MarkContainingBlockChain)
markContainingBlocksForLayout();
}
inline LayoutUnit RenderElement::valueForLength(const Length& length, LayoutUnit maximumValue) const
{
return WebCore::valueForLength(length, maximumValue);
}
inline LayoutUnit RenderElement::minimumValueForLength(const Length& length, LayoutUnit maximumValue, bool roundPercentages) const
{
return WebCore::minimumValueForLength(length, maximumValue, roundPercentages);
}
inline bool RenderElement::isRenderLayerModelObject() const
{
return m_baseTypeFlags & RenderLayerModelObjectFlag;
}
inline bool RenderElement::isBoxModelObject() const
{
return m_baseTypeFlags & RenderBoxModelObjectFlag;
}
inline bool RenderElement::isRenderBlock() const
{
return m_baseTypeFlags & RenderBlockFlag;
}
inline bool RenderElement::isRenderBlockFlow() const
{
return m_baseTypeFlags & RenderBlockFlowFlag;
}
inline bool RenderElement::isRenderReplaced() const
{
return m_baseTypeFlags & RenderReplacedFlag;
}
inline bool RenderElement::isRenderInline() const
{
return m_baseTypeFlags & RenderInlineFlag;
}
inline Element* RenderElement::generatingElement() const
{
if (parent() && isRenderNamedFlowFragment())
return parent()->generatingElement();
return toElement(RenderObject::generatingNode());
}
inline bool RenderObject::isRenderLayerModelObject() const
{
return isRenderElement() && toRenderElement(this)->isRenderLayerModelObject();
}
inline bool RenderObject::isBoxModelObject() const
{
return isRenderElement() && toRenderElement(this)->isBoxModelObject();
}
inline bool RenderObject::isRenderBlock() const
{
return isRenderElement() && toRenderElement(this)->isRenderBlock();
}
inline bool RenderObject::isRenderBlockFlow() const
{
return isRenderElement() && toRenderElement(this)->isRenderBlockFlow();
}
inline bool RenderObject::isRenderReplaced() const
{
return isRenderElement() && toRenderElement(this)->isRenderReplaced();
}
inline bool RenderObject::isRenderInline() const
{
return isRenderElement() && toRenderElement(this)->isRenderInline();
}
inline RenderStyle& RenderObject::style() const
{
if (isText())
return m_parent->style();
return toRenderElement(this)->style();
}
inline RenderStyle& RenderObject::firstLineStyle() const
{
if (isText())
return m_parent->firstLineStyle();
return toRenderElement(this)->firstLineStyle();
}
inline RenderElement* ContainerNode::renderer() const
{
return toRenderElement(Node::renderer());
}
inline int adjustForAbsoluteZoom(int value, const RenderElement& renderer)
{
return adjustForAbsoluteZoom(value, renderer.style());
}
#if ENABLE(SUBPIXEL_LAYOUT)
inline LayoutUnit adjustLayoutUnitForAbsoluteZoom(LayoutUnit value, const RenderElement& renderer)
{
return adjustLayoutUnitForAbsoluteZoom(value, renderer.style());
}
#endif
}
#endif // RenderElement_h