| /* |
| * Copyright (C) 2000 Lars Knoll (knoll@kde.org) |
| * (C) 2000 Antti Koivisto (koivisto@kde.org) |
| * (C) 2000 Dirk Mueller (mueller@kde.org) |
| * (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com) |
| * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2012 Apple Inc. All rights reserved. |
| * Copyright (C) 2009 Google Inc. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| */ |
| |
| #ifndef RenderObject_h |
| #define RenderObject_h |
| |
| #include "CachedImageClient.h" |
| #include "Element.h" |
| #include "FloatQuad.h" |
| #include "Frame.h" |
| #include "LayoutRect.h" |
| #include "PaintPhase.h" |
| #include "RenderObjectEnums.h" |
| #include "RenderStyle.h" |
| #include "ScrollBehavior.h" |
| #include "StyleImage.h" |
| #include "TextAffinity.h" |
| |
| namespace WebCore { |
| |
| class AffineTransform; |
| class AnimationController; |
| class Color; |
| class Cursor; |
| class Document; |
| class HitTestLocation; |
| class HitTestRequest; |
| 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 RenderNamedFlowFragment; |
| class RenderNamedFlowThread; |
| class RenderRegion; |
| class RenderTheme; |
| class SelectionSubtreeRoot; |
| class TransformState; |
| class VisiblePosition; |
| |
| #if PLATFORM(IOS) |
| class SelectionRect; |
| #endif |
| |
| struct PaintInfo; |
| |
| #if PLATFORM(IOS) |
| const int caretWidth = 2; // This value should be kept in sync with UIKit. See <rdar://problem/15580601>. |
| #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 |
| |
| // Base class for all rendering tree objects. |
| class RenderObject : public CachedImageClient { |
| WTF_MAKE_FAST_ALLOCATED; |
| friend class RenderBlock; |
| friend class RenderBlockFlow; |
| friend class RenderElement; |
| friend class RenderLayer; |
| public: |
| // Anonymous objects should pass the document as their node, and they will then automatically be |
| // marked as anonymous in the constructor. |
| 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; } |
| |
| // Use RenderElement versions instead. |
| 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; |
| WEBCORE_EXPORT RenderObject* childAt(unsigned) const; |
| |
| RenderObject* firstLeafChild() const; |
| RenderObject* lastLeafChild() const; |
| |
| #if ENABLE(IOS_TEXT_AUTOSIZING) |
| // Minimal distance between the block with fixed height and overflowing content and the text block to apply text autosizing. |
| // The greater this constant is the more potential places we have where autosizing is turned off. |
| // So it should be as low as possible. There are sites that break at 2. |
| static const int TextAutoSizingFixedHeightDepth = 3; |
| |
| enum BlockContentHeightType { |
| FixedHeight, |
| FlexibleHeight, |
| OverflowHeight |
| }; |
| |
| typedef BlockContentHeightType (*HeightTypeTraverseNextInclusionFunction)(const RenderObject&); |
| RenderObject* traverseNext(const RenderObject* stayWithin, HeightTypeTraverseNextInclusionFunction, int& currentDepth, int& newFixedDepth) const; |
| #endif |
| |
| WEBCORE_EXPORT RenderLayer* enclosingLayer() const; |
| |
| // Scrolling is a RenderBox concept, however some code just cares about recursively scrolling our enclosing ScrollableArea(s). |
| WEBCORE_EXPORT bool scrollRectToVisible(SelectionRevealMode, const LayoutRect&, const ScrollAlignment& alignX = ScrollAlignment::alignCenterIfNeeded, const ScrollAlignment& alignY = ScrollAlignment::alignCenterIfNeeded); |
| |
| // Convenience function for getting to the nearest enclosing box of a RenderObject. |
| RenderBox& enclosingBox() const; |
| RenderBoxModelObject& enclosingBoxModelObject() const; |
| |
| bool fixedPositionedWithNamedFlowContainingBlock() const; |
| |
| // Function to return our enclosing flow thread if we are contained inside one. This |
| // function follows the containing block chain. |
| RenderFlowThread* flowThreadContainingBlock() const |
| { |
| if (flowThreadState() == NotInsideFlowThread) |
| return nullptr; |
| |
| return locateFlowThreadContainingBlock(); |
| } |
| |
| RenderNamedFlowFragment* currentRenderNamedFlowFragment() const; |
| |
| // FIXME: The meaning of this function is unclear. |
| virtual bool isEmpty() const { return !firstChildSlow(); } |
| |
| #ifndef NDEBUG |
| void setHasAXObject(bool flag) { m_hasAXObject = flag; } |
| bool hasAXObject() const { return m_hasAXObject; } |
| |
| // Helper class forbidding calls to setNeedsLayout() during its lifetime. |
| class SetLayoutNeededForbiddenScope { |
| public: |
| explicit SetLayoutNeededForbiddenScope(RenderObject*, bool isForbidden = true); |
| ~SetLayoutNeededForbiddenScope(); |
| private: |
| RenderObject* m_renderObject; |
| bool m_preexistingForbidden; |
| }; |
| #endif |
| |
| // Obtains the nearest enclosing block (including this block) that contributes a first-line style to our inline |
| // children. |
| virtual RenderBlock* firstLineBlock() const; |
| |
| // RenderObject tree manipulation |
| ////////////////////////////////////////// |
| virtual bool canHaveChildren() const = 0; |
| virtual bool canHaveGeneratedChildren() const; |
| virtual bool createsAnonymousWrapper() const { return false; } |
| ////////////////////////////////////////// |
| |
| #if ENABLE(TREE_DEBUGGING) |
| void showNodeTreeForThis() const; |
| void showRenderTreeForThis() const; |
| void showLineTreeForThis() const; |
| |
| void showRenderObject(bool mark, int depth) const; |
| void showRenderSubTreeAndMark(const RenderObject* markedObject, int depth) const; |
| void showRegionsInformation() const; |
| #endif |
| |
| 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 isRubyInline() const { return false; } |
| virtual bool isRubyBlock() 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(ATTACHMENT_ELEMENT) |
| virtual bool isAttachment() const { return false; } |
| #endif |
| #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 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 isDocumentElementRenderer() 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 beingDestroyed() const { return m_bitfields.beingDestroyed(); } |
| |
| 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 isRenderMathMLRow() const { return false; } |
| virtual bool isRenderMathMLMath() const { return false; } |
| virtual bool isRenderMathMLMenclose() 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) |
| |
| // FIXME: Until all SVG renders can be subclasses of RenderSVGModelObject we have |
| // to add SVG renderer methods to RenderObject with an ASSERT_NOT_REACHED() default implementation. |
| 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 isSVGTSpan() 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 isSVGResourceClipper() const { return false; } |
| virtual bool isSVGResourceFilterPrimitive() const { return false; } |
| |
| // FIXME: Those belong into a SVG specific base-class for all renderers (see above) |
| // Unfortunately we don't have such a class yet, because it's not possible for all renderers |
| // to inherit from RenderSVGObject -> RenderObject (some need RenderBlock inheritance for instance) |
| virtual void setNeedsTransformUpdate() { } |
| virtual void setNeedsBoundariesUpdate(); |
| virtual bool needsBoundariesUpdate() { return false; } |
| |
| // Per SVG 1.1 objectBoundingBox ignores clipping, masking, filter effects, opacity and stroke-width. |
| // This is used for all computation of objectBoundingBox relative units and by SVGLocatable::getBBox(). |
| // NOTE: Markers are not specifically ignored here by SVG 1.1 spec, but we ignore them |
| // since stroke-width is ignored (and marker size can depend on stroke-width). |
| // objectBoundingBox is returned local coordinates. |
| // The name objectBoundingBox is taken from the SVG 1.1 spec. |
| virtual FloatRect objectBoundingBox() const; |
| virtual FloatRect strokeBoundingBox() const; |
| |
| // Returns the smallest rectangle enclosing all of the painted content |
| // respecting clipping, masking, filters, opacity, stroke-width and markers |
| virtual FloatRect repaintRectInLocalCoordinates() const; |
| |
| // This only returns the transform="" value from the element |
| // most callsites want localToParentTransform() instead. |
| virtual AffineTransform localTransform() const; |
| |
| // Returns the full transform mapping from local coordinates to local coords for the parent SVG renderer |
| // This includes any viewport transforms and x/y offsets as well as the transform="" value off the element. |
| virtual const AffineTransform& localToParentTransform() const; |
| |
| // SVG uses FloatPoint precise hit testing, and passes the point in parent |
| // coordinates instead of in repaint container coordinates. Eventually the |
| // rest of the rendering tree will move to a similar model. |
| 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 |
| { |
| // This function is kept in sync with anonymous block creation conditions in |
| // RenderBlock::createAnonymousBlock(). This includes creating an anonymous |
| // RenderBlock having a BLOCK or BOX display. Other classes such as RenderTextFragment |
| // are not RenderBlocks and will return false. See https://bugs.webkit.org/show_bug.cgi?id=56709. |
| 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 isAnonymousInlineBlock() const; |
| 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 nullptr; } |
| |
| bool isFloating() const { return m_bitfields.floating(); } |
| |
| bool isOutOfFlowPositioned() const { return m_bitfields.isOutOfFlowPositioned(); } // absolute or fixed positioning |
| bool isInFlowPositioned() const { return m_bitfields.isRelPositioned() || m_bitfields.isStickyPositioned(); } // relative or sticky positioning |
| bool isRelPositioned() const { return m_bitfields.isRelPositioned(); } // relative positioning |
| 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(); } // inline object |
| bool isReplaced() const { return m_bitfields.isReplaced(); } // a "replaced" element (see CSS) |
| bool isHorizontalWritingMode() const { return m_bitfields.horizontalWritingMode(); } |
| |
| bool isDragging() const { return m_bitfields.hasRareData() && rareData().isDragging(); } |
| bool hasReflection() const { return m_bitfields.hasRareData() && rareData().hasReflection(); } |
| bool isRenderFlowThread() const { return m_bitfields.hasRareData() && rareData().isRenderFlowThread(); } |
| bool hasOutlineAutoAncestor() const { return m_bitfields.hasRareData() && rareData().hasOutlineAutoAncestor(); } |
| bool isRegisteredForVisibleInViewportCallback() { return m_bitfields.hasRareData() && rareData().isRegisteredForVisibleInViewportCallback(); } |
| |
| enum VisibleInViewportState { |
| VisibilityUnknown, |
| VisibleInViewport, |
| NotVisibleInViewport, |
| }; |
| VisibleInViewportState visibleInViewportState() { return m_bitfields.hasRareData() ? rareData().visibleInViewportState() : VisibilityUnknown; } |
| |
| bool hasLayer() const { return m_bitfields.hasLayer(); } |
| bool hasSelfPaintingLayer() const; |
| |
| enum BoxDecorationState { |
| NoBoxDecorations, |
| HasBoxDecorationsAndBackgroundObscurationStatusInvalid, |
| HasBoxDecorationsAndBackgroundIsKnownToBeObscured, |
| HasBoxDecorationsAndBackgroundMayBeVisible, |
| }; |
| bool hasVisibleBoxDecorations() const { return m_bitfields.boxDecorationState() != NoBoxDecorations; } |
| bool backgroundIsKnownToBeObscured(const LayoutPoint& paintOffset); |
| 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 hasTransformRelatedProperty() const { return m_bitfields.hasTransformRelatedProperty(); } // Transform, perspective or transform-style: preserve-3d. |
| bool hasTransform() const { return hasTransformRelatedProperty() && style().hasTransform(); } |
| |
| inline bool preservesNewline() const; |
| |
| virtual void updateDragState(bool dragOn); |
| |
| RenderView& view() const { return *document().renderView(); }; |
| |
| // Returns true if this renderer is rooted. |
| bool isRooted() const; |
| |
| Node* node() const { return isAnonymous() ? nullptr : &m_node; } |
| Node* nonPseudoNode() const { return isPseudoElement() ? nullptr : node(); } |
| |
| // Returns the styled node that caused the generation of this renderer. |
| // This is the same as node() except for renderers of :before and :after |
| // pseudo elements for which their parent node is returned. |
| 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(); } |
| |
| // Returns the object containing this one. Can be different from parent for positioned elements. |
| // If repaintContainer and repaintContainerSkipped are not null, on return *repaintContainerSkipped |
| // is true if the renderer returned is an ancestor of repaintContainer. |
| RenderElement* container() const; |
| RenderElement* container(const RenderLayerModelObject* repaintContainer, bool& repaintContainerSkipped) const; |
| |
| RenderBoxModelObject* offsetParent() const; |
| |
| void markContainingBlocksForLayout(ScheduleRelayout = ScheduleRelayout::Yes, RenderElement* newRoot = nullptr); |
| 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 setHasVisibleBoxDecorations(bool = true); |
| void invalidateBackgroundObscurationStatus(); |
| virtual bool computeBackgroundIsKnownToBeObscured(const LayoutPoint&) { 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 setHasTransformRelatedProperty(bool b = true) { m_bitfields.setHasTransformRelatedProperty(b); } |
| |
| void setIsDragging(bool); |
| void setHasReflection(bool = true); |
| void setIsRenderFlowThread(bool = true); |
| void setHasOutlineAutoAncestor(bool = true); |
| void setIsRegisteredForVisibleInViewportCallback(bool); |
| void setVisibleInViewportState(VisibleInViewportState); |
| |
| // Hook so that RenderTextControl can return the line height of its inner renderer. |
| // For other renderers, the value is the same as lineHeight(false). |
| virtual int innerLineHeight() const; |
| |
| // used for element state updates that cannot be fixed with a |
| // repaint and do not need a relayout |
| 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; |
| |
| // returns the containing block level element for this element. |
| RenderBlock* containingBlock() const; |
| RenderBlock* containingBlockForFixedPosition() const; |
| RenderBlock* containingBlockForAbsolutePosition() const; |
| RenderBlock* containingBlockForObjectInFlow() const; |
| |
| // Convert the given local point to absolute coordinates. If MapCoordinatesFlags includes UseTransforms, take transforms into account. |
| WEBCORE_EXPORT FloatPoint localToAbsolute(const FloatPoint& localPoint = FloatPoint(), MapCoordinatesFlags = 0, bool* wasFixed = nullptr) const; |
| FloatPoint absoluteToLocal(const FloatPoint&, MapCoordinatesFlags = 0) const; |
| |
| // Convert a local quad to absolute coordinates, taking transforms into account. |
| FloatQuad localToAbsoluteQuad(const FloatQuad& quad, MapCoordinatesFlags mode = UseTransforms, bool* wasFixed = nullptr) const |
| { |
| return localToContainerQuad(quad, nullptr, mode, wasFixed); |
| } |
| // Convert an absolute quad to local coordinates. |
| FloatQuad absoluteToLocalQuad(const FloatQuad&, MapCoordinatesFlags mode = UseTransforms) const; |
| |
| // Convert a local quad into the coordinate system of container, taking transforms into account. |
| WEBCORE_EXPORT FloatQuad localToContainerQuad(const FloatQuad&, const RenderLayerModelObject* repaintContainer, MapCoordinatesFlags = UseTransforms, bool* wasFixed = nullptr) const; |
| WEBCORE_EXPORT FloatPoint localToContainerPoint(const FloatPoint&, const RenderLayerModelObject* repaintContainer, MapCoordinatesFlags = UseTransforms, bool* wasFixed = nullptr) const; |
| |
| // Return the offset from the container() renderer (excluding transforms). In multi-column layout, |
| // different offsets apply at different points, so return the offset that applies to the given point. |
| virtual LayoutSize offsetFromContainer(RenderElement&, const LayoutPoint&, bool* offsetDependsOnPoint = nullptr) const; |
| // Return the offset from an object up the container() chain. Asserts that none of the intermediate objects have transforms. |
| LayoutSize offsetFromAncestorContainer(RenderElement&) 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 { } |
| |
| // FIXME: useTransforms should go away eventually |
| WEBCORE_EXPORT IntRect absoluteBoundingBoxRect(bool useTransform = true, bool* wasFixed = nullptr) const; |
| IntRect absoluteBoundingBoxRectIgnoringTransforms() const { return absoluteBoundingBoxRect(false); } |
| |
| // Build an array of quads in absolute coords for line boxes |
| virtual void absoluteQuads(Vector<FloatQuad>&, bool* /*wasFixed*/ = nullptr) const { } |
| |
| virtual void absoluteFocusRingQuads(Vector<FloatQuad>&); |
| |
| static FloatRect absoluteBoundingBoxRectForRange(const Range*); |
| |
| // the rect that will be painted if this object is passed as the paintingRoot |
| WEBCORE_EXPORT LayoutRect paintingRootRect(LayoutRect& topLevelRect); |
| |
| virtual LayoutUnit minPreferredLogicalWidth() const { return 0; } |
| virtual LayoutUnit maxPreferredLogicalWidth() const { return 0; } |
| |
| const RenderStyle& style() const; |
| const RenderStyle& firstLineStyle() const; |
| |
| // Anonymous blocks that are part of of a continuation chain will return their inline continuation's outline style instead. |
| // This is typically only relevant when repainting. |
| virtual const RenderStyle& outlineStyleForRepaint() const { return style(); } |
| |
| virtual CursorDirective getCursor(const LayoutPoint&, Cursor&) const; |
| |
| void getTextDecorationColorsAndStyles(int decorations, Color& underlineColor, Color& overlineColor, Color& linethroughColor, |
| TextDecorationStyle& underlineStyle, TextDecorationStyle& overlineStyle, TextDecorationStyle& linethroughStyle, bool firstlineStyle = false) const; |
| |
| // Return the RenderLayerModelObject in the container chain which is responsible for painting this object, or nullptr |
| // if painting is root-relative. This is the container that should be passed to the 'forRepaint' |
| // methods. |
| RenderLayerModelObject* containerForRepaint() const; |
| // Actually do the repaint of rect r for this object which has been computed in the coordinate space |
| // of repaintContainer. If repaintContainer is nullptr, repaint via the view. |
| void repaintUsingContainer(const RenderLayerModelObject* repaintContainer, const LayoutRect&, bool shouldClipToLayer = true) const; |
| |
| // Repaint the entire object. Called when, e.g., the color of a border changes, or when a border |
| // style changes. |
| void repaint() const; |
| |
| // Repaint a specific subrectangle within a given object. The rect |r| is in the object's coordinate space. |
| WEBCORE_EXPORT void repaintRectangle(const LayoutRect&, bool shouldClipToLayer = true) const; |
| |
| // Repaint a slow repaint object, which, at this time, means we are repainting an object with background-attachment:fixed. |
| void repaintSlowRepaintObject() const; |
| |
| bool checkForRepaintDuringLayout() const; |
| |
| // Returns the rect that should be repainted whenever this object changes. The rect is in the view's |
| // coordinate space. This method deals with outlines and overflow. |
| LayoutRect absoluteClippedOverflowRect() const |
| { |
| return clippedOverflowRectForRepaint(nullptr); |
| } |
| WEBCORE_EXPORT IntRect pixelSnappedAbsoluteClippedOverflowRect() const; |
| virtual LayoutRect clippedOverflowRectForRepaint(const RenderLayerModelObject* repaintContainer) const; |
| virtual LayoutRect rectWithOutlineForRepaint(const RenderLayerModelObject* repaintContainer, LayoutUnit outlineWidth) const; |
| virtual LayoutRect outlineBoundsForRepaint(const RenderLayerModelObject* /*repaintContainer*/, const RenderGeometryMap* = nullptr) const { return LayoutRect(); } |
| |
| // Given a rect in the object's coordinate space, compute a rect suitable for repainting |
| // that rect in view coordinates. |
| LayoutRect computeAbsoluteRepaintRect(const LayoutRect& r, bool fixed = false) const |
| { |
| return computeRectForRepaint(r, nullptr, { fixed, false }); |
| } |
| // Given a rect in the object's coordinate space, compute a rect suitable for repainting |
| // that rect in the coordinate space of repaintContainer. |
| struct RepaintContext { |
| RepaintContext(bool hasPositionFixedDescendant = false, bool dirtyRectIsFlipped = false) |
| : m_hasPositionFixedDescendant(hasPositionFixedDescendant) |
| , m_dirtyRectIsFlipped(dirtyRectIsFlipped) |
| { |
| } |
| bool m_hasPositionFixedDescendant; |
| bool m_dirtyRectIsFlipped; |
| }; |
| virtual LayoutRect computeRectForRepaint(const LayoutRect&, const RenderLayerModelObject* repaintContainer, RepaintContext = { }) const; |
| virtual FloatRect computeFloatRectForRepaint(const FloatRect&, const RenderLayerModelObject* repaintContainer, bool fixed = false) const; |
| |
| virtual unsigned int length() const { return 1; } |
| |
| bool isFloatingOrOutOfFlowPositioned() const { return (isFloating() || isOutOfFlowPositioned()); } |
| |
| enum SelectionState { |
| SelectionNone, // The object is not selected. |
| SelectionStart, // The object either contains the start of a selection run or is the start of a run |
| SelectionInside, // The object is fully encompassed by a selection run |
| SelectionEnd, // The object either contains the end of a selection run or is the end of a run |
| SelectionBoth // The object contains an entire run or is the sole selected object in that run |
| }; |
| |
| // The current selection state for an object. For blocks, the state refers to the state of the leaf |
| // descendants (as described above in the SelectionState enum declaration). |
| SelectionState selectionState() const { return m_bitfields.selectionState(); } |
| virtual void setSelectionState(SelectionState state) { m_bitfields.setSelectionState(state); } |
| inline void setSelectionStateIfNeeded(SelectionState); |
| bool canUpdateSelectionOnRootLineBoxes(); |
| |
| // A single rectangle that encompasses all of the selected objects within this object. Used to determine the tightest |
| // possible bounding box for the selection. |
| LayoutRect selectionRect(bool clipToVisibleContent = true) { return selectionRectForRepaint(nullptr, clipToVisibleContent); } |
| virtual LayoutRect selectionRectForRepaint(const RenderLayerModelObject* /*repaintContainer*/, bool /*clipToVisibleContent*/ = true) { return LayoutRect(); } |
| |
| virtual bool canBeSelectionLeaf() const { return false; } |
| bool hasSelectedChildren() const { return selectionState() != SelectionNone; } |
| |
| // Whether or not a given block needs to paint selection gaps. |
| virtual bool shouldPaintSelectionGaps() const { return false; } |
| |
| /** |
| * Returns the local coordinates of the caret within this render object. |
| * @param caretOffset zero-based offset determining position within the render object. |
| * @param extraWidthToEndOfLine optional out arg to give extra width to end of line - |
| * useful for character range rect computations |
| */ |
| virtual LayoutRect localCaretRect(InlineBox*, int caretOffset, LayoutUnit* extraWidthToEndOfLine = nullptr); |
| |
| // When performing a global document tear-down, the renderer of the document is cleared. We use this |
| // as a hook to detect the case of document destruction and don't waste time doing unnecessary work. |
| bool documentBeingDestroyed() const; |
| |
| void destroyAndCleanupAnonymousWrappers(); |
| void destroy(); |
| |
| // Virtual function helpers for the deprecated Flexible Box Layout (display: -webkit-box). |
| virtual bool isDeprecatedFlexibleBox() const { return false; } |
| |
| // Virtual function helper for the new FlexibleBox Layout (display: -webkit-flex). |
| 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; |
| |
| void imageChanged(CachedImage*, const IntRect* = nullptr) override; |
| virtual void imageChanged(WrappedImagePtr, const IntRect* = nullptr) { } |
| |
| SelectionSubtreeRoot& selectionRoot() const; |
| void selectionStartEnd(int& spos, int& epos) const; |
| |
| void removeFromParent(); |
| |
| AnimationController& animation() const; |
| |
| // Map points and quads through elements, potentially via 3d transforms. You should never need to call these directly; use |
| // localToAbsolute/absoluteToLocal methods instead. |
| virtual void mapLocalToContainer(const RenderLayerModelObject* repaintContainer, TransformState&, MapCoordinatesFlags, bool* wasFixed = nullptr) const; |
| virtual void mapAbsoluteToLocalPoint(MapCoordinatesFlags, TransformState&) const; |
| |
| // Pushes state onto RenderGeometryMap about how to map coordinates from this renderer to its container, or ancestorToStopAt (whichever is encountered first). |
| // Returns the renderer which was mapped to (container or ancestorToStopAt). |
| 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<LayoutRect>&, const LayoutPoint& /* additionalOffset */, const RenderLayerModelObject* /* paintContainer */ = nullptr) { }; |
| |
| LayoutRect absoluteOutlineBounds() const |
| { |
| return outlineBoundsForRepaint(nullptr); |
| } |
| |
| RespectImageOrientationEnum shouldRespectImageOrientation() const; |
| |
| protected: |
| ////////////////////////////////////////// |
| // Helper functions. Dangerous to use! |
| void setPreviousSibling(RenderObject* previous) { m_previous = previous; } |
| void setNextSibling(RenderObject* next) { m_next = next; } |
| void setParent(RenderElement*); |
| ////////////////////////////////////////// |
| void addPDFURLRect(PaintInfo&, const LayoutPoint&); |
| Node& nodeForNonAnonymous() const { ASSERT(!isAnonymous()); return m_node; } |
| |
| void adjustRectForOutlineAndShadow(LayoutRect&) 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); } |
| |
| virtual RenderFlowThread* locateFlowThreadContainingBlock() const; |
| void invalidateFlowThreadContainingBlockIncludingDescendants(RenderFlowThread* = nullptr); |
| static void calculateBorderStyleColor(const EBorderStyle&, const BoxSide&, Color&); |
| |
| 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(); |
| |
| void removeFromRenderFlowThread(); |
| void removeFromRenderFlowThreadIncludingDescendants(bool); |
| Node* generatingPseudoHostElement() const; |
| |
| void propagateRepaintToParentWithOutlineAutoIfNeeded(const RenderLayerModelObject& repaintContainer, const LayoutRect& repaintRect) const; |
| |
| virtual bool isWBR() const { ASSERT_NOT_REACHED(); return false; } |
| |
| void setEverHadLayout(bool b) { m_bitfields.setEverHadLayout(b); } |
| |
| bool hasRareData() const { return m_bitfields.hasRareData(); } |
| void setHasRareData(bool b) { m_bitfields.setHasRareData(b); } |
| |
| #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; }\ |
| |
| #define ADD_ENUM_BITFIELD(name, Name, Type, width) \ |
| private:\ |
| unsigned m_##name : width;\ |
| public:\ |
| Type name() const { return static_cast<Type>(m_##name); }\ |
| void set##Name(Type name) { m_##name = static_cast<unsigned>(name); }\ |
| |
| class RenderObjectBitfields { |
| enum PositionedState { |
| IsStaticallyPositioned = 0, |
| IsRelativelyPositioned = 1, |
| IsOutOfFlowPositioned = 2, |
| IsStickyPositioned = 3 |
| }; |
| |
| public: |
| RenderObjectBitfields(const Node& node) |
| : m_hasRareData(false) |
| , m_beingDestroyed(false) |
| , 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_hasLayer(false) |
| , m_hasOverflowClip(false) |
| , m_hasTransformRelatedProperty(false) |
| , m_everHadLayout(false) |
| , m_childrenInline(false) |
| , m_positionedState(IsStaticallyPositioned) |
| , m_selectionState(SelectionNone) |
| , m_flowThreadState(NotInsideFlowThread) |
| , m_boxDecorationState(NoBoxDecorations) |
| { |
| } |
| |
| ADD_BOOLEAN_BITFIELD(hasRareData, HasRareData); |
| |
| ADD_BOOLEAN_BITFIELD(beingDestroyed, BeingDestroyed); |
| 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(hasLayer, HasLayer); |
| ADD_BOOLEAN_BITFIELD(hasOverflowClip, HasOverflowClip); // Set in the case of overflow:auto/scroll/hidden |
| ADD_BOOLEAN_BITFIELD(hasTransformRelatedProperty, HasTransformRelatedProperty); |
| ADD_BOOLEAN_BITFIELD(unused, Unused); |
| |
| ADD_BOOLEAN_BITFIELD(everHadLayout, EverHadLayout); |
| |
| // from RenderBlock |
| ADD_BOOLEAN_BITFIELD(childrenInline, ChildrenInline); |
| |
| private: |
| unsigned m_positionedState : 2; // PositionedState |
| unsigned m_selectionState : 3; // SelectionState |
| unsigned m_flowThreadState : 2; // FlowThreadState |
| unsigned m_boxDecorationState : 2; // BoxDecorationState |
| |
| 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) |
| { |
| // This mask maps FixedPosition and AbsolutePosition to IsOutOfFlowPositioned, saving one bit. |
| 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; } |
| }; |
| |
| RenderObjectBitfields m_bitfields; |
| |
| class RenderObjectRareData { |
| public: |
| RenderObjectRareData() |
| : m_isDragging(false) |
| , m_hasReflection(false) |
| , m_isRenderFlowThread(false) |
| , m_hasOutlineAutoAncestor(false) |
| , m_isRegisteredForVisibleInViewportCallback(false) |
| , m_visibleInViewportState(VisibilityUnknown) |
| { |
| } |
| ADD_BOOLEAN_BITFIELD(isDragging, IsDragging); |
| ADD_BOOLEAN_BITFIELD(hasReflection, HasReflection); |
| ADD_BOOLEAN_BITFIELD(isRenderFlowThread, IsRenderFlowThread); |
| ADD_BOOLEAN_BITFIELD(hasOutlineAutoAncestor, HasOutlineAutoAncestor); |
| |
| // From RenderElement |
| ADD_BOOLEAN_BITFIELD(isRegisteredForVisibleInViewportCallback, IsRegisteredForVisibleInViewportCallback); |
| ADD_ENUM_BITFIELD(visibleInViewportState, VisibleInViewportState, VisibleInViewportState, 2); |
| |
| }; |
| |
| RenderObjectRareData rareData() const; |
| RenderObjectRareData& ensureRareData(); |
| void removeRareData(); |
| |
| // Note: RenderObjectRareData is stored by value. |
| typedef HashMap<const RenderObject*, RenderObjectRareData> RareDataHash; |
| |
| static RareDataHash& rareDataMap(); |
| |
| #undef ADD_BOOLEAN_BITFIELD |
| }; |
| |
| 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 |
| { |
| // Text nodes don't have their own styles, so ignore the style on a text node. |
| if (isText()) |
| return false; |
| if (style().styleType() != BEFORE) |
| return false; |
| return true; |
| } |
| |
| inline bool RenderObject::isAfterContent() const |
| { |
| // Text nodes don't have their own styles, so ignore the style on a text node. |
| 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::setHasVisibleBoxDecorations(bool b) |
| { |
| if (!b) { |
| m_bitfields.setBoxDecorationState(NoBoxDecorations); |
| return; |
| } |
| if (hasVisibleBoxDecorations()) |
| return; |
| m_bitfields.setBoxDecorationState(HasBoxDecorationsAndBackgroundObscurationStatusInvalid); |
| } |
| |
| inline void RenderObject::invalidateBackgroundObscurationStatus() |
| { |
| if (!hasVisibleBoxDecorations()) |
| return; |
| m_bitfields.setBoxDecorationState(HasBoxDecorationsAndBackgroundObscurationStatusInvalid); |
| } |
| |
| inline bool RenderObject::backgroundIsKnownToBeObscured(const LayoutPoint& paintOffset) |
| { |
| if (m_bitfields.boxDecorationState() == HasBoxDecorationsAndBackgroundObscurationStatusInvalid) { |
| BoxDecorationState boxDecorationState = computeBackgroundIsKnownToBeObscured(paintOffset) ? HasBoxDecorationsAndBackgroundIsKnownToBeObscured : HasBoxDecorationsAndBackgroundMayBeVisible; |
| m_bitfields.setBoxDecorationState(boxDecorationState); |
| } |
| return m_bitfields.boxDecorationState() == HasBoxDecorationsAndBackgroundIsKnownToBeObscured; |
| } |
| |
| #if ENABLE(TREE_DEBUGGING) |
| void printRenderTreeForLiveDocuments(); |
| void printLayerTreeForLiveDocuments(); |
| #endif |
| |
| } // namespace WebCore |
| |
| #define SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(ToValueTypeName, predicate) \ |
| SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::ToValueTypeName) \ |
| static bool isType(const WebCore::RenderObject& renderer) { return renderer.predicate; } \ |
| SPECIALIZE_TYPE_TRAITS_END() |
| |
| #if ENABLE(TREE_DEBUGGING) |
| // Outside the WebCore namespace for ease of invocation from gdb. |
| void showNodeTree(const WebCore::RenderObject*); |
| void showLineTree(const WebCore::RenderObject*); |
| void showRenderTree(const WebCore::RenderObject*); |
| #endif |
| |
| #endif // RenderObject_h |
