#ifndef RenderObject_h
#define RenderObject_h
#include "CachedImageClient.h"
#include "DocumentStyleSheetCollection.h"
#include "Element.h"
#include "FloatQuad.h"
#include "Frame.h"
#include "LayoutRect.h"
#include "PaintPhase.h"
#include "RenderStyle.h"
#include "ScrollBehavior.h"
#include "StyleInheritedData.h"
#include "TextAffinity.h"
#include <wtf/HashSet.h>
namespace WebCore {
class AffineTransform;
class AnimationController;
class Cursor;
class Document;
class HitTestLocation;
class HitTestResult;
class InlineBox;
class Path;
class Position;
class PseudoStyleRequest;
class RenderBoxModelObject;
class RenderInline;
class RenderBlock;
class RenderElement;
class RenderFlowThread;
class RenderGeometryMap;
class RenderLayer;
class RenderLayerModelObject;
class RenderNamedFlowThread;
class RenderRegion;
class RenderTheme;
class SelectionSubtreeRoot;
class TransformState;
class VisiblePosition;
#if PLATFORM(IOS)
class SelectionRect;
#endif
struct PaintInfo;
enum CursorDirective {
SetCursorBasedOnStyle,
SetCursor,
DoNotSetCursor
};
enum HitTestFilter {
HitTestAll,
HitTestSelf,
HitTestDescendants
};
enum HitTestAction {
HitTestBlockBackground,
HitTestChildBlockBackground,
HitTestChildBlockBackgrounds,
HitTestFloat,
HitTestForeground
};
enum BoxSide {
BSTop,
BSRight,
BSBottom,
BSLeft
};
enum MarkingBehavior {
MarkOnlyThis,
MarkContainingBlockChain,
};
enum MapCoordinatesMode {
IsFixed = 1 << 0,
UseTransforms = 1 << 1,
ApplyContainerFlip = 1 << 2
};
typedef unsigned MapCoordinatesFlags;
#if PLATFORM(IOS)
const int caretWidth = 2; #else
const int caretWidth = 1;
#endif
#if ENABLE(DASHBOARD_SUPPORT)
struct AnnotatedRegionValue {
bool operator==(const AnnotatedRegionValue& o) const
{
return type == o.type && bounds == o.bounds && clip == o.clip && label == o.label;
}
bool operator!=(const AnnotatedRegionValue& o) const
{
return !(*this == o);
}
LayoutRect bounds;
String label;
LayoutRect clip;
int type;
};
#endif
#ifndef NDEBUG
const int showTreeCharacterOffset = 39;
#endif
class RenderObject : public CachedImageClient {
WTF_MAKE_FAST_ALLOCATED;
friend class RenderBlock;
friend class RenderBlockFlow;
friend class RenderElement;
friend class RenderLayer;
public:
explicit RenderObject(Node&);
virtual ~RenderObject();
RenderTheme& theme() const;
virtual const char* renderName() const = 0;
RenderElement* parent() const { return m_parent; }
bool isDescendantOf(const RenderObject*) const;
RenderObject* previousSibling() const { return m_previous; }
RenderObject* nextSibling() const { return m_next; }
virtual RenderObject* firstChildSlow() const { return nullptr; }
virtual RenderObject* lastChildSlow() const { return nullptr; }
RenderObject* nextInPreOrder() const;
RenderObject* nextInPreOrder(const RenderObject* stayWithin) const;
RenderObject* nextInPreOrderAfterChildren() const;
RenderObject* nextInPreOrderAfterChildren(const RenderObject* stayWithin) const;
RenderObject* previousInPreOrder() const;
RenderObject* previousInPreOrder(const RenderObject* stayWithin) const;
RenderObject* childAt(unsigned) const;
RenderObject* firstLeafChild() const;
RenderObject* lastLeafChild() const;
#if ENABLE(IOS_TEXT_AUTOSIZING)
static const int TextAutoSizingFixedHeightDepth = 3;
enum BlockContentHeightType {
FixedHeight,
FlexibleHeight,
OverflowHeight
};
RenderObject* traverseNext(const RenderObject* stayWithin) const;
typedef bool (*TraverseNextInclusionFunction)(const RenderObject*);
typedef BlockContentHeightType (*HeightTypeTraverseNextInclusionFunction)(const RenderObject*);
RenderObject* traverseNext(const RenderObject* stayWithin, TraverseNextInclusionFunction) const;
RenderObject* traverseNext(const RenderObject* stayWithin, HeightTypeTraverseNextInclusionFunction, int& currentDepth, int& newFixedDepth) const;
void adjustComputedFontSizesOnBlocks(float size, float visibleWidth);
void resetTextAutosizing();
#endif
RenderLayer* enclosingLayer() const;
bool scrollRectToVisible(const LayoutRect&, const ScrollAlignment& alignX = ScrollAlignment::alignCenterIfNeeded, const ScrollAlignment& alignY = ScrollAlignment::alignCenterIfNeeded);
RenderBox& enclosingBox() const;
RenderBoxModelObject& enclosingBoxModelObject() const;
bool fixedPositionedWithNamedFlowContainingBlock() const;
enum ShouldUseFlowThreadCache {
UseFlowThreadCache,
SkipFlowThreadCache
};
RenderFlowThread* flowThreadContainingBlock(ShouldUseFlowThreadCache useCache = UseFlowThreadCache) const
{
if (flowThreadState() == NotInsideFlowThread)
return 0;
return (useCache == SkipFlowThreadCache) ? locateFlowThreadContainingBlockNoCache() : locateFlowThreadContainingBlock();
}
RenderNamedFlowFragment* currentRenderNamedFlowFragment() const;
virtual bool isEmpty() const { return !firstChildSlow(); }
#ifndef NDEBUG
void setHasAXObject(bool flag) { m_hasAXObject = flag; }
bool hasAXObject() const { return m_hasAXObject; }
class SetLayoutNeededForbiddenScope {
public:
explicit SetLayoutNeededForbiddenScope(RenderObject*, bool isForbidden = true);
~SetLayoutNeededForbiddenScope();
private:
RenderObject* m_renderObject;
bool m_preexistingForbidden;
};
#endif
virtual RenderBlock* firstLineBlock() const;
void handleDynamicFloatPositionChange();
void removeAnonymousWrappersForInlinesIfNecessary();
virtual bool canHaveChildren() const = 0;
virtual bool canHaveGeneratedChildren() const;
virtual bool createsAnonymousWrapper() const { return false; }
protected:
void setPreviousSibling(RenderObject* previous) { m_previous = previous; }
void setNextSibling(RenderObject* next) { m_next = next; }
void setParent(RenderElement*);
private:
#ifndef NDEBUG
bool isSetNeedsLayoutForbidden() const { return m_setNeedsLayoutForbidden; }
void setNeedsLayoutIsForbidden(bool flag) { m_setNeedsLayoutForbidden = flag; }
#endif
void addAbsoluteRectForLayer(LayoutRect& result);
void setLayerNeedsFullRepaint();
void setLayerNeedsFullRepaintForPositionedMovementLayout();
public:
#ifndef NDEBUG
void showTreeForThis() const;
void showRenderTreeForThis() const;
void showLineTreeForThis() const;
void showRenderObject() const;
void showRenderObject(int) const;
void showRenderTreeAndMark(const RenderObject* = 0, const char* = 0, const RenderObject* = 0, const char* = 0, int = 0) const;
void showRegionsInformation(int&) const;
#endif
public:
bool isPseudoElement() const { return node() && node()->isPseudoElement(); }
bool isRenderElement() const { return !isText(); }
bool isRenderReplaced() const;
bool isBoxModelObject() const;
bool isRenderBlock() const;
bool isRenderBlockFlow() const;
bool isRenderInline() const;
bool isRenderLayerModelObject() const;
virtual bool isCounter() const { return false; }
virtual bool isQuote() const { return false; }
#if ENABLE(DETAILS_ELEMENT)
virtual bool isDetailsMarker() const { return false; }
#endif
virtual bool isEmbeddedObject() const { return false; }
virtual bool isFieldset() const { return false; }
virtual bool isFileUploadControl() const { return false; }
virtual bool isFrame() const { return false; }
virtual bool isFrameSet() const { return false; }
virtual bool isImage() const { return false; }
virtual bool isInlineBlockOrInlineTable() const { return false; }
virtual bool isListBox() const { return false; }
virtual bool isListItem() const { return false; }
virtual bool isListMarker() const { return false; }
virtual bool isMedia() const { return false; }
virtual bool isMenuList() const { return false; }
#if ENABLE(METER_ELEMENT)
virtual bool isMeter() const { return false; }
#endif
virtual bool isSnapshottedPlugIn() const { return false; }
virtual bool isProgress() const { return false; }
virtual bool isRenderSVGBlock() const { return false; };
virtual bool isRenderButton() const { return false; }
virtual bool isRenderIFrame() const { return false; }
virtual bool isRenderImage() const { return false; }
virtual bool isRenderRegion() const { return false; }
virtual bool isRenderNamedFlowFragment() const { return false; }
virtual bool isReplica() const { return false; }
virtual bool isRuby() const { return false; }
virtual bool isRubyBase() const { return false; }
virtual bool isRubyRun() const { return false; }
virtual bool isRubyText() const { return false; }
virtual bool isSlider() const { return false; }
virtual bool isSliderThumb() const { return false; }
virtual bool isTable() const { return false; }
virtual bool isTableCell() const { return false; }
virtual bool isRenderTableCol() const { return false; }
virtual bool isTableCaption() const { return false; }
virtual bool isTableRow() const { return false; }
virtual bool isTableSection() const { return false; }
virtual bool isTextControl() const { return false; }
virtual bool isTextArea() const { return false; }
virtual bool isTextField() const { return false; }
virtual bool isTextControlInnerBlock() const { return false; }
virtual bool isVideo() const { return false; }
virtual bool isWidget() const { return false; }
virtual bool isCanvas() const { return false; }
#if ENABLE(FULLSCREEN_API)
virtual bool isRenderFullScreen() const { return false; }
virtual bool isRenderFullScreenPlaceholder() const { return false; }
#endif
#if ENABLE(CSS_GRID_LAYOUT)
virtual bool isRenderGrid() const { return false; }
#endif
virtual bool isRenderFlowThread() const { return false; }
virtual bool isRenderNamedFlowThread() const { return false; }
bool isInFlowRenderFlowThread() const { return isRenderFlowThread() && !isOutOfFlowPositioned(); }
bool isOutOfFlowRenderFlowThread() const { return isRenderFlowThread() && isOutOfFlowPositioned(); }
virtual bool isMultiColumnBlockFlow() const { return false; }
virtual bool isRenderMultiColumnSet() const { return false; }
virtual bool isRenderMultiColumnFlowThread() const { return false; }
virtual bool isRenderMultiColumnSpannerPlaceholder() const { return false; }
virtual bool isRenderScrollbarPart() const { return false; }
bool isRoot() const { return document().documentElement() == &m_node; }
bool isBody() const { return node() && node()->hasTagName(HTMLNames::bodyTag); }
bool isHR() const { return node() && node()->hasTagName(HTMLNames::hrTag); }
bool isLegend() const;
bool isHTMLMarquee() const;
bool isTablePart() const { return isTableCell() || isRenderTableCol() || isTableCaption() || isTableRow() || isTableSection(); }
inline bool isBeforeContent() const;
inline bool isAfterContent() const;
inline bool isBeforeOrAfterContent() const;
static inline bool isBeforeContent(const RenderObject* obj) { return obj && obj->isBeforeContent(); }
static inline bool isAfterContent(const RenderObject* obj) { return obj && obj->isAfterContent(); }
static inline bool isBeforeOrAfterContent(const RenderObject* obj) { return obj && obj->isBeforeOrAfterContent(); }
bool hasCounterNodeMap() const { return m_bitfields.hasCounterNodeMap(); }
void setHasCounterNodeMap(bool hasCounterNodeMap) { m_bitfields.setHasCounterNodeMap(hasCounterNodeMap); }
bool everHadLayout() const { return m_bitfields.everHadLayout(); }
bool childrenInline() const { return m_bitfields.childrenInline(); }
void setChildrenInline(bool b) { m_bitfields.setChildrenInline(b); }
enum FlowThreadState {
NotInsideFlowThread = 0,
InsideOutOfFlowThread = 1,
InsideInFlowThread = 2,
};
void setFlowThreadStateIncludingDescendants(FlowThreadState);
FlowThreadState flowThreadState() const { return m_bitfields.flowThreadState(); }
void setFlowThreadState(FlowThreadState state) { m_bitfields.setFlowThreadState(state); }
virtual bool requiresForcedStyleRecalcPropagation() const { return false; }
#if ENABLE(MATHML)
virtual bool isRenderMathMLBlock() const { return false; }
virtual bool isRenderMathMLTable() const { return false; }
virtual bool isRenderMathMLOperator() const { return false; }
virtual bool isRenderMathMLRadicalOperator() const { return false; }
virtual bool isRenderMathMLRow() const { return false; }
virtual bool isRenderMathMLMath() const { return false; }
virtual bool isRenderMathMLFenced() const { return false; }
virtual bool isRenderMathMLFraction() const { return false; }
virtual bool isRenderMathMLRoot() const { return false; }
virtual bool isRenderMathMLRootWrapper() const { return false; }
virtual bool isRenderMathMLSpace() const { return false; }
virtual bool isRenderMathMLSquareRoot() const { return false; }
virtual bool isRenderMathMLScripts() const { return false; }
virtual bool isRenderMathMLScriptsWrapper() const { return false; }
virtual bool isRenderMathMLToken() const { return false; }
virtual bool isRenderMathMLUnderOver() const { return false; }
#endif // ENABLE(MATHML)
virtual bool isRenderSVGModelObject() const { return false; }
virtual bool isSVGRoot() const { return false; }
virtual bool isSVGContainer() const { return false; }
virtual bool isSVGTransformableContainer() const { return false; }
virtual bool isSVGViewportContainer() const { return false; }
virtual bool isSVGGradientStop() const { return false; }
virtual bool isSVGHiddenContainer() const { return false; }
virtual bool isSVGPath() const { return false; }
virtual bool isSVGShape() const { return false; }
virtual bool isSVGText() const { return false; }
virtual bool isSVGTextPath() const { return false; }
virtual bool isSVGInline() const { return false; }
virtual bool isSVGInlineText() const { return false; }
virtual bool isSVGImage() const { return false; }
virtual bool isSVGForeignObject() const { return false; }
virtual bool isSVGResourceContainer() const { return false; }
virtual bool isSVGResourceFilter() const { return false; }
virtual bool isSVGResourceFilterPrimitive() const { return false; }
virtual void setNeedsTransformUpdate() { }
virtual void setNeedsBoundariesUpdate();
virtual bool needsBoundariesUpdate() { return false; }
virtual FloatRect objectBoundingBox() const;
virtual FloatRect strokeBoundingBox() const;
virtual FloatRect repaintRectInLocalCoordinates() const;
virtual AffineTransform localTransform() const;
virtual const AffineTransform& localToParentTransform() const;
virtual bool nodeAtFloatPoint(const HitTestRequest&, HitTestResult&, const FloatPoint& pointInParent, HitTestAction);
bool hasAspectRatio() const { return isReplaced() && (isImage() || isVideo() || isCanvas()); }
bool isAnonymous() const { return m_bitfields.isAnonymous(); }
bool isAnonymousBlock() const
{
return isAnonymous() && (style().display() == BLOCK || style().display() == BOX) && style().styleType() == NOPSEUDO && isRenderBlock() && !isListMarker() && !isRenderFlowThread() && !isRenderMultiColumnSet() && !isRenderView()
#if ENABLE(FULLSCREEN_API)
&& !isRenderFullScreen()
&& !isRenderFullScreenPlaceholder()
#endif
#if ENABLE(MATHML)
&& !isRenderMathMLBlock()
#endif
;
}
bool isElementContinuation() const { return node() && node()->renderer() != this; }
bool isInlineElementContinuation() const { return isElementContinuation() && isInline(); }
bool isBlockElementContinuation() const { return isElementContinuation() && !isInline(); }
virtual RenderBoxModelObject* virtualContinuation() const { return 0; }
bool isFloating() const { return m_bitfields.floating(); }
bool isOutOfFlowPositioned() const { return m_bitfields.isOutOfFlowPositioned(); } bool isInFlowPositioned() const { return m_bitfields.isRelPositioned() || m_bitfields.isStickyPositioned(); } bool isRelPositioned() const { return m_bitfields.isRelPositioned(); } bool isStickyPositioned() const { return m_bitfields.isStickyPositioned(); }
bool isPositioned() const { return m_bitfields.isPositioned(); }
bool isText() const { return !m_bitfields.isBox() && m_bitfields.isTextOrRenderView(); }
bool isLineBreak() const { return m_bitfields.isLineBreak(); }
bool isBR() const { return isLineBreak() && !isWBR(); }
bool isLineBreakOpportunity() const { return isLineBreak() && isWBR(); }
bool isTextOrLineBreak() const { return isText() || isLineBreak(); }
bool isBox() const { return m_bitfields.isBox(); }
bool isRenderView() const { return m_bitfields.isBox() && m_bitfields.isTextOrRenderView(); }
bool isInline() const { return m_bitfields.isInline(); } bool isDragging() const { return m_bitfields.isDragging(); }
bool isReplaced() const { return m_bitfields.isReplaced(); } bool isHorizontalWritingMode() const { return m_bitfields.horizontalWritingMode(); }
bool hasLayer() const { return m_bitfields.hasLayer(); }
enum BoxDecorationState {
NoBoxDecorations,
HasBoxDecorationsAndBackgroundObscurationStatusInvalid,
HasBoxDecorationsAndBackgroundIsKnownToBeObscured,
HasBoxDecorationsAndBackgroundMayBeVisible,
};
bool hasBoxDecorations() const { return m_bitfields.boxDecorationState() != NoBoxDecorations; }
bool backgroundIsKnownToBeObscured();
bool hasEntirelyFixedBackground() const;
bool needsLayout() const
{
return m_bitfields.needsLayout() || m_bitfields.normalChildNeedsLayout() || m_bitfields.posChildNeedsLayout()
|| m_bitfields.needsSimplifiedNormalFlowLayout() || m_bitfields.needsPositionedMovementLayout();
}
bool selfNeedsLayout() const { return m_bitfields.needsLayout(); }
bool needsPositionedMovementLayout() const { return m_bitfields.needsPositionedMovementLayout(); }
bool needsPositionedMovementLayoutOnly() const
{
return m_bitfields.needsPositionedMovementLayout() && !m_bitfields.needsLayout() && !m_bitfields.normalChildNeedsLayout()
&& !m_bitfields.posChildNeedsLayout() && !m_bitfields.needsSimplifiedNormalFlowLayout();
}
bool posChildNeedsLayout() const { return m_bitfields.posChildNeedsLayout(); }
bool needsSimplifiedNormalFlowLayout() const { return m_bitfields.needsSimplifiedNormalFlowLayout(); }
bool normalChildNeedsLayout() const { return m_bitfields.normalChildNeedsLayout(); }
bool preferredLogicalWidthsDirty() const { return m_bitfields.preferredLogicalWidthsDirty(); }
bool isSelectionBorder() const;
bool hasOverflowClip() const { return m_bitfields.hasOverflowClip(); }
bool hasTransform() const { return m_bitfields.hasTransform(); }
inline bool preservesNewline() const;
RenderStyle* getCachedPseudoStyle(PseudoId, RenderStyle* parentStyle = 0) const;
PassRefPtr<RenderStyle> getUncachedPseudoStyle(const PseudoStyleRequest&, RenderStyle* parentStyle = 0, RenderStyle* ownStyle = 0) const;
virtual void updateDragState(bool dragOn);
RenderView& view() const { return *document().renderView(); };
bool isRooted(RenderView** = 0) const;
Node* node() const { return isAnonymous() ? 0 : &m_node; }
Node* nonPseudoNode() const { return isPseudoElement() ? 0 : node(); }
Node* generatingNode() const { return isPseudoElement() ? generatingPseudoHostElement() : node(); }
Document& document() const { return m_node.document(); }
Frame& frame() const;
bool hasOutlineAnnotation() const;
bool hasOutline() const { return style().hasOutline() || hasOutlineAnnotation(); }
RenderElement* container(const RenderLayerModelObject* repaintContainer = 0, bool* repaintContainerSkipped = 0) const;
RenderBoxModelObject* offsetParent() const;
void markContainingBlocksForLayout(bool scheduleRelayout = true, RenderElement* newRoot = 0);
void setNeedsLayout(MarkingBehavior = MarkContainingBlockChain);
void clearNeedsLayout();
void setPreferredLogicalWidthsDirty(bool, MarkingBehavior = MarkContainingBlockChain);
void invalidateContainerPreferredLogicalWidths();
void setNeedsLayoutAndPrefWidthsRecalc()
{
setNeedsLayout();
setPreferredLogicalWidthsDirty(true);
}
void setPositionState(EPosition position)
{
ASSERT((position != AbsolutePosition && position != FixedPosition) || isBox());
m_bitfields.setPositionedState(position);
}
void clearPositionedState() { m_bitfields.clearPositionedState(); }
void setFloating(bool b = true) { m_bitfields.setFloating(b); }
void setInline(bool b = true) { m_bitfields.setIsInline(b); }
void setHasBoxDecorations(bool = true);
void invalidateBackgroundObscurationStatus();
virtual bool computeBackgroundIsKnownToBeObscured() { return false; }
void setIsText() { ASSERT(!isBox()); m_bitfields.setIsTextOrRenderView(true); }
void setIsLineBreak() { m_bitfields.setIsLineBreak(true); }
void setIsBox() { m_bitfields.setIsBox(true); }
void setIsRenderView() { ASSERT(isBox()); m_bitfields.setIsTextOrRenderView(true); }
void setReplaced(bool b = true) { m_bitfields.setIsReplaced(b); }
void setHorizontalWritingMode(bool b = true) { m_bitfields.setHorizontalWritingMode(b); }
void setHasOverflowClip(bool b = true) { m_bitfields.setHasOverflowClip(b); }
void setHasLayer(bool b = true) { m_bitfields.setHasLayer(b); }
void setHasTransform(bool b = true) { m_bitfields.setHasTransform(b); }
void setHasReflection(bool b = true) { m_bitfields.setHasReflection(b); }
virtual int innerLineHeight() const;
virtual void updateFromElement() { }
#if ENABLE(DASHBOARD_SUPPORT)
virtual void addAnnotatedRegions(Vector<AnnotatedRegionValue>&);
void collectAnnotatedRegions(Vector<AnnotatedRegionValue>&);
#endif
bool isComposited() const;
bool hitTest(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestFilter = HitTestAll);
virtual void updateHitTestResult(HitTestResult&, const LayoutPoint&);
virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction);
virtual VisiblePosition positionForPoint(const LayoutPoint&, const RenderRegion*);
VisiblePosition createVisiblePosition(int offset, EAffinity) const;
VisiblePosition createVisiblePosition(const Position&) const;
RenderBlock* containingBlock() const;
bool canContainFixedPositionObjects() const
{
return isRenderView() || (hasTransform() && isRenderBlock())
|| isSVGForeignObject()
|| isOutOfFlowRenderFlowThread();
}
FloatPoint localToAbsolute(const FloatPoint& localPoint = FloatPoint(), MapCoordinatesFlags = 0) const;
FloatPoint absoluteToLocal(const FloatPoint&, MapCoordinatesFlags = 0) const;
FloatQuad localToAbsoluteQuad(const FloatQuad& quad, MapCoordinatesFlags mode = 0, bool* wasFixed = 0) const
{
return localToContainerQuad(quad, 0, mode, wasFixed);
}
FloatQuad absoluteToLocalQuad(const FloatQuad&, MapCoordinatesFlags mode = 0) const;
FloatQuad localToContainerQuad(const FloatQuad&, const RenderLayerModelObject* repaintContainer, MapCoordinatesFlags = 0, bool* wasFixed = 0) const;
FloatPoint localToContainerPoint(const FloatPoint&, const RenderLayerModelObject* repaintContainer, MapCoordinatesFlags = 0, bool* wasFixed = 0) const;
virtual LayoutSize offsetFromContainer(RenderObject*, const LayoutPoint&, bool* offsetDependsOnPoint = 0) const;
LayoutSize offsetFromAncestorContainer(RenderObject*) const;
#if PLATFORM(IOS)
virtual void collectSelectionRects(Vector<SelectionRect>&, unsigned startOffset = 0, unsigned endOffset = std::numeric_limits<unsigned>::max());
virtual void absoluteQuadsForSelection(Vector<FloatQuad>& quads) const { absoluteQuads(quads); }
#endif
virtual void absoluteRects(Vector<IntRect>&, const LayoutPoint&) const { }
IntRect absoluteBoundingBoxRect(bool useTransform = true) const;
IntRect absoluteBoundingBoxRectIgnoringTransforms() const { return absoluteBoundingBoxRect(false); }
virtual void absoluteQuads(Vector<FloatQuad>&, bool* = 0) const { }
virtual void absoluteFocusRingQuads(Vector<FloatQuad>&);
static FloatRect absoluteBoundingBoxRectForRange(const Range*);
LayoutRect paintingRootRect(LayoutRect& topLevelRect);
virtual LayoutUnit minPreferredLogicalWidth() const { return 0; }
virtual LayoutUnit maxPreferredLogicalWidth() const { return 0; }
RenderStyle& style() const;
RenderStyle& firstLineStyle() const;
virtual const RenderStyle& outlineStyleForRepaint() const { return style(); }
virtual CursorDirective getCursor(const LayoutPoint&, Cursor&) const;
void getTextDecorationColors(int decorations, Color& underline, Color& overline, Color& linethrough, bool quirksMode = false, bool firstlineStyle = false);
RenderLayerModelObject* containerForRepaint() const;
void repaintUsingContainer(const RenderLayerModelObject* repaintContainer, const LayoutRect&, bool shouldClipToLayer = true) const;
void repaint() const;
void repaintRectangle(const LayoutRect&, bool shouldClipToLayer = true) const;
void repaintSlowRepaintObject() const;
bool checkForRepaintDuringLayout() const;
LayoutRect absoluteClippedOverflowRect() const
{
return clippedOverflowRectForRepaint(0);
}
IntRect pixelSnappedAbsoluteClippedOverflowRect() const;
virtual LayoutRect clippedOverflowRectForRepaint(const RenderLayerModelObject* repaintContainer) const;
virtual LayoutRect rectWithOutlineForRepaint(const RenderLayerModelObject* repaintContainer, LayoutUnit outlineWidth) const;
virtual LayoutRect outlineBoundsForRepaint(const RenderLayerModelObject* , const RenderGeometryMap* = 0) const { return LayoutRect(); }
void computeAbsoluteRepaintRect(LayoutRect& r, bool fixed = false) const
{
computeRectForRepaint(0, r, fixed);
}
virtual void computeRectForRepaint(const RenderLayerModelObject* repaintContainer, LayoutRect&, bool fixed = false) const;
virtual void computeFloatRectForRepaint(const RenderLayerModelObject* repaintContainer, FloatRect& repaintRect, bool fixed = false) const;
virtual unsigned int length() const { return 1; }
bool isFloatingOrOutOfFlowPositioned() const { return (isFloating() || isOutOfFlowPositioned()); }
bool hasReflection() const { return m_bitfields.hasReflection(); }
int maximalOutlineSize(PaintPhase) const;
enum SelectionState {
SelectionNone, SelectionStart, SelectionInside, SelectionEnd, SelectionBoth };
SelectionState selectionState() const { return m_bitfields.selectionState(); }
virtual void setSelectionState(SelectionState state) { m_bitfields.setSelectionState(state); }
inline void setSelectionStateIfNeeded(SelectionState);
bool canUpdateSelectionOnRootLineBoxes();
LayoutRect selectionRect(bool clipToVisibleContent = true) { return selectionRectForRepaint(0, clipToVisibleContent); }
virtual LayoutRect selectionRectForRepaint(const RenderLayerModelObject* , bool = true) { return LayoutRect(); }
virtual bool canBeSelectionLeaf() const { return false; }
bool hasSelectedChildren() const { return selectionState() != SelectionNone; }
Color selectionBackgroundColor() const;
Color selectionForegroundColor() const;
Color selectionEmphasisMarkColor() const;
virtual bool shouldPaintSelectionGaps() const { return false; }
virtual LayoutRect localCaretRect(InlineBox*, int caretOffset, LayoutUnit* extraWidthToEndOfLine = 0);
bool documentBeingDestroyed() const;
void destroyAndCleanupAnonymousWrappers();
void destroy();
virtual bool isDeprecatedFlexibleBox() const { return false; }
virtual bool isStretchingChildren() const { return false; }
virtual bool isFlexibleBox() const { return false; }
bool isFlexibleBoxIncludingDeprecated() const
{
return isFlexibleBox() || isDeprecatedFlexibleBox();
}
virtual bool isCombineText() const { return false; }
virtual int caretMinOffset() const;
virtual int caretMaxOffset() const;
virtual int previousOffset(int current) const;
virtual int previousOffsetForBackwardDeletion(int current) const;
virtual int nextOffset(int current) const;
virtual void imageChanged(CachedImage*, const IntRect* = 0) override;
virtual void imageChanged(WrappedImagePtr, const IntRect* = 0) { }
SelectionSubtreeRoot& selectionRoot() const;
void selectionStartEnd(int& spos, int& epos) const;
void removeFromParent();
AnimationController& animation() const;
virtual void mapLocalToContainer(const RenderLayerModelObject* repaintContainer, TransformState&, MapCoordinatesFlags = ApplyContainerFlip, bool* wasFixed = 0) const;
virtual void mapAbsoluteToLocalPoint(MapCoordinatesFlags, TransformState&) const;
virtual const RenderObject* pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap&) const;
bool shouldUseTransformFromContainer(const RenderObject* container) const;
void getTransformFromContainer(const RenderObject* container, const LayoutSize& offsetInContainer, TransformationMatrix&) const;
virtual void addFocusRingRects(Vector<IntRect>&, const LayoutPoint& , const RenderLayerModelObject* = 0) { };
LayoutRect absoluteOutlineBounds() const
{
return outlineBoundsForRepaint(0);
}
RespectImageOrientationEnum shouldRespectImageOrientation() const;
void drawLineForBoxSide(GraphicsContext*, float x1, float y1, float x2, float y2, BoxSide, Color, EBorderStyle, float adjbw1, float adjbw2, bool antialias = false) const;
protected:
void paintFocusRing(PaintInfo&, const LayoutPoint&, RenderStyle*);
void paintOutline(PaintInfo&, const LayoutRect&);
void addPDFURLRect(PaintInfo&, const LayoutPoint&);
Node& nodeForNonAnonymous() const { ASSERT(!isAnonymous()); return m_node; }
void adjustRectForOutlineAndShadow(LayoutRect&) const;
void clearLayoutRootIfNeeded() const;
virtual void willBeDestroyed();
virtual void insertedIntoTree();
virtual void willBeRemovedFromTree();
void setNeedsPositionedMovementLayoutBit(bool b) { m_bitfields.setNeedsPositionedMovementLayout(b); }
void setNormalChildNeedsLayoutBit(bool b) { m_bitfields.setNormalChildNeedsLayout(b); }
void setPosChildNeedsLayoutBit(bool b) { m_bitfields.setPosChildNeedsLayout(b); }
void setNeedsSimplifiedNormalFlowLayoutBit(bool b) { m_bitfields.setNeedsSimplifiedNormalFlowLayout(b); }
private:
RenderFlowThread* locateFlowThreadContainingBlock() const;
RenderFlowThread* locateFlowThreadContainingBlockNoCache() const;
void removeFromRenderFlowThread();
void removeFromRenderFlowThreadRecursive(RenderFlowThread*);
Color selectionColor(int colorProperty) const;
PassRefPtr<RenderStyle> selectionPseudoStyle() const;
Node* generatingPseudoHostElement() const;
virtual bool isWBR() const { ASSERT_NOT_REACHED(); return false; }
#ifndef NDEBUG
void checkBlockPositionedObjectsNeedLayout();
#endif
Node& m_node;
RenderElement* m_parent;
RenderObject* m_previous;
RenderObject* m_next;
#ifndef NDEBUG
bool m_hasAXObject : 1;
bool m_setNeedsLayoutForbidden : 1;
#endif
#define ADD_BOOLEAN_BITFIELD(name, Name) \
private:\
unsigned m_##name : 1;\
public:\
bool name() const { return m_##name; }\
void set##Name(bool name) { m_##name = name; }\
class RenderObjectBitfields {
enum PositionedState {
IsStaticallyPositioned = 0,
IsRelativelyPositioned = 1,
IsOutOfFlowPositioned = 2,
IsStickyPositioned = 3
};
public:
RenderObjectBitfields(const Node& node)
: m_needsLayout(false)
, m_needsPositionedMovementLayout(false)
, m_normalChildNeedsLayout(false)
, m_posChildNeedsLayout(false)
, m_needsSimplifiedNormalFlowLayout(false)
, m_preferredLogicalWidthsDirty(false)
, m_floating(false)
, m_isAnonymous(node.isDocumentNode())
, m_isTextOrRenderView(false)
, m_isBox(false)
, m_isInline(true)
, m_isReplaced(false)
, m_isLineBreak(false)
, m_horizontalWritingMode(true)
, m_isDragging(false)
, m_hasLayer(false)
, m_hasOverflowClip(false)
, m_hasTransform(false)
, m_hasReflection(false)
, m_hasCounterNodeMap(false)
, m_everHadLayout(false)
, m_childrenInline(false)
, m_positionedState(IsStaticallyPositioned)
, m_selectionState(SelectionNone)
, m_flowThreadState(NotInsideFlowThread)
, m_boxDecorationState(NoBoxDecorations)
{
}
ADD_BOOLEAN_BITFIELD(needsLayout, NeedsLayout);
ADD_BOOLEAN_BITFIELD(needsPositionedMovementLayout, NeedsPositionedMovementLayout);
ADD_BOOLEAN_BITFIELD(normalChildNeedsLayout, NormalChildNeedsLayout);
ADD_BOOLEAN_BITFIELD(posChildNeedsLayout, PosChildNeedsLayout);
ADD_BOOLEAN_BITFIELD(needsSimplifiedNormalFlowLayout, NeedsSimplifiedNormalFlowLayout);
ADD_BOOLEAN_BITFIELD(preferredLogicalWidthsDirty, PreferredLogicalWidthsDirty);
ADD_BOOLEAN_BITFIELD(floating, Floating);
ADD_BOOLEAN_BITFIELD(isAnonymous, IsAnonymous);
ADD_BOOLEAN_BITFIELD(isTextOrRenderView, IsTextOrRenderView);
ADD_BOOLEAN_BITFIELD(isBox, IsBox);
ADD_BOOLEAN_BITFIELD(isInline, IsInline);
ADD_BOOLEAN_BITFIELD(isReplaced, IsReplaced);
ADD_BOOLEAN_BITFIELD(isLineBreak, IsLineBreak);
ADD_BOOLEAN_BITFIELD(horizontalWritingMode, HorizontalWritingMode);
ADD_BOOLEAN_BITFIELD(isDragging, IsDragging);
ADD_BOOLEAN_BITFIELD(hasLayer, HasLayer);
ADD_BOOLEAN_BITFIELD(hasOverflowClip, HasOverflowClip); ADD_BOOLEAN_BITFIELD(hasTransform, HasTransform);
ADD_BOOLEAN_BITFIELD(hasReflection, HasReflection);
ADD_BOOLEAN_BITFIELD(hasCounterNodeMap, HasCounterNodeMap);
ADD_BOOLEAN_BITFIELD(everHadLayout, EverHadLayout);
ADD_BOOLEAN_BITFIELD(childrenInline, ChildrenInline);
private:
unsigned m_positionedState : 2; unsigned m_selectionState : 3; unsigned m_flowThreadState : 2; unsigned m_boxDecorationState : 2;
public:
bool isOutOfFlowPositioned() const { return m_positionedState == IsOutOfFlowPositioned; }
bool isRelPositioned() const { return m_positionedState == IsRelativelyPositioned; }
bool isStickyPositioned() const { return m_positionedState == IsStickyPositioned; }
bool isPositioned() const { return m_positionedState != IsStaticallyPositioned; }
void setPositionedState(int positionState)
{
m_positionedState = static_cast<PositionedState>(positionState & 0x3);
}
void clearPositionedState() { m_positionedState = StaticPosition; }
ALWAYS_INLINE SelectionState selectionState() const { return static_cast<SelectionState>(m_selectionState); }
ALWAYS_INLINE void setSelectionState(SelectionState selectionState) { m_selectionState = selectionState; }
ALWAYS_INLINE FlowThreadState flowThreadState() const { return static_cast<FlowThreadState>(m_flowThreadState); }
ALWAYS_INLINE void setFlowThreadState(FlowThreadState flowThreadState) { m_flowThreadState = flowThreadState; }
ALWAYS_INLINE BoxDecorationState boxDecorationState() const { return static_cast<BoxDecorationState>(m_boxDecorationState); }
ALWAYS_INLINE void setBoxDecorationState(BoxDecorationState boxDecorationState) { m_boxDecorationState = boxDecorationState; }
};
#undef ADD_BOOLEAN_BITFIELD
RenderObjectBitfields m_bitfields;
void setIsDragging(bool b) { m_bitfields.setIsDragging(b); }
void setEverHadLayout(bool b) { m_bitfields.setEverHadLayout(b); }
};
template <typename Type> bool isRendererOfType(const RenderObject&);
template <> inline bool isRendererOfType<const RenderObject>(const RenderObject&) { return true; }
inline Frame& RenderObject::frame() const
{
return *document().frame();
}
inline AnimationController& RenderObject::animation() const
{
return frame().animation();
}
inline bool RenderObject::documentBeingDestroyed() const
{
return document().renderTreeBeingDestroyed();
}
inline bool RenderObject::isBeforeContent() const
{
if (isText())
return false;
if (style().styleType() != BEFORE)
return false;
return true;
}
inline bool RenderObject::isAfterContent() const
{
if (isText())
return false;
if (style().styleType() != AFTER)
return false;
return true;
}
inline bool RenderObject::isBeforeOrAfterContent() const
{
return isBeforeContent() || isAfterContent();
}
inline void RenderObject::setNeedsLayout(MarkingBehavior markParents)
{
ASSERT(!isSetNeedsLayoutForbidden());
if (m_bitfields.needsLayout())
return;
m_bitfields.setNeedsLayout(true);
if (markParents == MarkContainingBlockChain)
markContainingBlocksForLayout();
if (hasLayer())
setLayerNeedsFullRepaint();
}
inline bool RenderObject::preservesNewline() const
{
if (isSVGInlineText())
return false;
return style().preserveNewline();
}
inline void RenderObject::setSelectionStateIfNeeded(SelectionState state)
{
if (selectionState() == state)
return;
setSelectionState(state);
}
inline void RenderObject::setHasBoxDecorations(bool b)
{
if (!b) {
m_bitfields.setBoxDecorationState(NoBoxDecorations);
return;
}
if (hasBoxDecorations())
return;
m_bitfields.setBoxDecorationState(HasBoxDecorationsAndBackgroundObscurationStatusInvalid);
}
inline void RenderObject::invalidateBackgroundObscurationStatus()
{
if (!hasBoxDecorations())
return;
m_bitfields.setBoxDecorationState(HasBoxDecorationsAndBackgroundObscurationStatusInvalid);
}
inline bool RenderObject::backgroundIsKnownToBeObscured()
{
if (m_bitfields.boxDecorationState() == HasBoxDecorationsAndBackgroundObscurationStatusInvalid) {
BoxDecorationState boxDecorationState = computeBackgroundIsKnownToBeObscured() ? HasBoxDecorationsAndBackgroundIsKnownToBeObscured : HasBoxDecorationsAndBackgroundMayBeVisible;
m_bitfields.setBoxDecorationState(boxDecorationState);
}
return m_bitfields.boxDecorationState() == HasBoxDecorationsAndBackgroundIsKnownToBeObscured;
}
#define RENDER_OBJECT_TYPE_CASTS(ToValueTypeName, predicate) \
template <> inline bool isRendererOfType<const ToValueTypeName>(const RenderObject& renderer) { return renderer.predicate; } \
TYPE_CASTS_BASE(ToValueTypeName, RenderObject, renderer, isRendererOfType<const ToValueTypeName>(*renderer), isRendererOfType<const ToValueTypeName>(renderer))
}
#ifndef NDEBUG
void showTree(const WebCore::RenderObject*);
void showLineTree(const WebCore::RenderObject*);
void showRenderTree(const WebCore::RenderObject* object1);
void showRenderTree(const WebCore::RenderObject* object1, const WebCore::RenderObject* object2);
#endif
#endif // RenderObject_h