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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2007 David Smith (catfish.man@gmail.com)
* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple 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.
*/
#pragma once
#include "GapRects.h"
#include "LineWidth.h"
#include "RenderBox.h"
#include "TextRun.h"
#include <memory>
#include <wtf/ListHashSet.h>
namespace WebCore {
class LineLayoutState;
class LogicalSelectionOffsetCaches;
class RenderInline;
class RenderText;
struct BidiRun;
struct PaintInfo;
typedef WTF::ListHashSet<RenderBox*> TrackedRendererListHashSet;
enum CaretType { CursorCaret, DragCaret };
enum ContainingBlockState { NewContainingBlock, SameContainingBlock };
enum TextRunFlag {
DefaultTextRunFlags = 0,
RespectDirection = 1 << 0,
RespectDirectionOverride = 1 << 1
};
typedef unsigned TextRunFlags;
class RenderBlock : public RenderBox {
WTF_MAKE_ISO_ALLOCATED(RenderBlock);
public:
friend class LineLayoutState;
virtual ~RenderBlock();
protected:
RenderBlock(Element&, RenderStyle&&, BaseTypeFlags);
RenderBlock(Document&, RenderStyle&&, BaseTypeFlags);
public:
// These two functions are overridden for inline-block.
LayoutUnit lineHeight(bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const final;
int baselinePosition(FontBaseline, bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const override;
LayoutUnit minLineHeightForReplacedRenderer(bool isFirstLine, LayoutUnit replacedHeight) const;
// FIXME-BLOCKFLOW: Remove virtualizaion when all callers have moved to RenderBlockFlow
virtual void deleteLines();
virtual void layoutBlock(bool relayoutChildren, LayoutUnit pageLogicalHeight = 0_lu);
virtual void invalidateLineLayoutPath() { }
void insertPositionedObject(RenderBox&);
static void removePositionedObject(const RenderBox&);
void removePositionedObjects(const RenderBlock*, ContainingBlockState = SameContainingBlock);
TrackedRendererListHashSet* positionedObjects() const;
bool hasPositionedObjects() const
{
TrackedRendererListHashSet* objects = positionedObjects();
return objects && !objects->isEmpty();
}
void addPercentHeightDescendant(RenderBox&);
static void removePercentHeightDescendant(RenderBox&);
TrackedRendererListHashSet* percentHeightDescendants() const;
bool hasPercentHeightDescendants() const
{
TrackedRendererListHashSet* objects = percentHeightDescendants();
return objects && !objects->isEmpty();
}
static bool hasPercentHeightContainerMap();
static bool hasPercentHeightDescendant(RenderBox&);
static void clearPercentHeightDescendantsFrom(RenderBox&);
static void removePercentHeightDescendantIfNeeded(RenderBox&);
bool isContainingBlockAncestorFor(RenderObject&) const;
void setHasMarginBeforeQuirk(bool b) { setRenderBlockHasMarginBeforeQuirk(b); }
void setHasMarginAfterQuirk(bool b) { setRenderBlockHasMarginAfterQuirk(b); }
void setShouldForceRelayoutChildren(bool b) { setRenderBlockShouldForceRelayoutChildren(b); }
bool hasMarginBeforeQuirk() const { return renderBlockHasMarginBeforeQuirk(); }
bool hasMarginAfterQuirk() const { return renderBlockHasMarginAfterQuirk(); }
bool hasBorderOrPaddingLogicalWidthChanged() const { return renderBlockShouldForceRelayoutChildren(); }
bool hasMarginBeforeQuirk(const RenderBox& child) const;
bool hasMarginAfterQuirk(const RenderBox& child) const;
void markPositionedObjectsForLayout();
void markForPaginationRelayoutIfNeeded() override;
// FIXME-BLOCKFLOW: Remove virtualizaion when all of the line layout code has been moved out of RenderBlock
virtual bool containsFloats() const { return false; }
// Versions that can compute line offsets with the fragment and page offset passed in. Used for speed to avoid having to
// compute the fragment all over again when you already know it.
LayoutUnit availableLogicalWidthForLineInFragment(LayoutUnit position, IndentTextOrNot shouldIndentText, RenderFragmentContainer* fragment, LayoutUnit logicalHeight = 0_lu) const
{
return std::max<LayoutUnit>(0, logicalRightOffsetForLineInFragment(position, shouldIndentText, fragment, logicalHeight)
- logicalLeftOffsetForLineInFragment(position, shouldIndentText, fragment, logicalHeight));
}
LayoutUnit logicalRightOffsetForLineInFragment(LayoutUnit position, IndentTextOrNot shouldIndentText, RenderFragmentContainer* fragment, LayoutUnit logicalHeight = 0_lu) const
{
return logicalRightOffsetForLine(position, logicalRightOffsetForContent(fragment), shouldIndentText, logicalHeight);
}
LayoutUnit logicalLeftOffsetForLineInFragment(LayoutUnit position, IndentTextOrNot shouldIndentText, RenderFragmentContainer* fragment, LayoutUnit logicalHeight = 0_lu) const
{
return logicalLeftOffsetForLine(position, logicalLeftOffsetForContent(fragment), shouldIndentText, logicalHeight);
}
LayoutUnit startOffsetForLineInFragment(LayoutUnit position, IndentTextOrNot shouldIndentText, RenderFragmentContainer* fragment, LayoutUnit logicalHeight = 0_lu) const
{
return style().isLeftToRightDirection() ? logicalLeftOffsetForLineInFragment(position, shouldIndentText, fragment, logicalHeight)
: logicalWidth() - logicalRightOffsetForLineInFragment(position, shouldIndentText, fragment, logicalHeight);
}
LayoutUnit endOffsetForLineInFragment(LayoutUnit position, IndentTextOrNot shouldIndentText, RenderFragmentContainer* fragment, LayoutUnit logicalHeight = 0_lu) const
{
return !style().isLeftToRightDirection() ? logicalLeftOffsetForLineInFragment(position, shouldIndentText, fragment, logicalHeight)
: logicalWidth() - logicalRightOffsetForLineInFragment(position, shouldIndentText, fragment, logicalHeight);
}
LayoutUnit availableLogicalWidthForLine(LayoutUnit position, IndentTextOrNot shouldIndentText, LayoutUnit logicalHeight = 0_lu) const
{
return availableLogicalWidthForLineInFragment(position, shouldIndentText, fragmentAtBlockOffset(position), logicalHeight);
}
LayoutUnit logicalRightOffsetForLine(LayoutUnit position, IndentTextOrNot shouldIndentText, LayoutUnit logicalHeight = 0_lu) const
{
return logicalRightOffsetForLine(position, logicalRightOffsetForContent(position), shouldIndentText, logicalHeight);
}
LayoutUnit logicalLeftOffsetForLine(LayoutUnit position, IndentTextOrNot shouldIndentText, LayoutUnit logicalHeight = 0_lu) const
{
return logicalLeftOffsetForLine(position, logicalLeftOffsetForContent(position), shouldIndentText, logicalHeight);
}
LayoutUnit startOffsetForLine(LayoutUnit position, IndentTextOrNot shouldIndentText, LayoutUnit logicalHeight = 0_lu) const
{
return style().isLeftToRightDirection() ? logicalLeftOffsetForLine(position, shouldIndentText, logicalHeight)
: logicalWidth() - logicalRightOffsetForLine(position, shouldIndentText, logicalHeight);
}
LayoutUnit endOffsetForLine(LayoutUnit position, IndentTextOrNot shouldIndentText, LayoutUnit logicalHeight = 0_lu) const
{
return !style().isLeftToRightDirection() ? logicalLeftOffsetForLine(position, shouldIndentText, logicalHeight)
: logicalWidth() - logicalRightOffsetForLine(position, shouldIndentText, logicalHeight);
}
LayoutUnit textIndentOffset() const;
VisiblePosition positionForPoint(const LayoutPoint&, const RenderFragmentContainer*) override;
GapRects selectionGapRectsForRepaint(const RenderLayerModelObject* repaintContainer);
LayoutRect logicalLeftSelectionGap(RenderBlock& rootBlock, const LayoutPoint& rootBlockPhysicalPosition, const LayoutSize& offsetFromRootBlock,
RenderBoxModelObject* selObj, LayoutUnit logicalLeft, LayoutUnit logicalTop, LayoutUnit logicalHeight, const LogicalSelectionOffsetCaches&, const PaintInfo*);
LayoutRect logicalRightSelectionGap(RenderBlock& rootBlock, const LayoutPoint& rootBlockPhysicalPosition, const LayoutSize& offsetFromRootBlock,
RenderBoxModelObject* selObj, LayoutUnit logicalRight, LayoutUnit logicalTop, LayoutUnit logicalHeight, const LogicalSelectionOffsetCaches&, const PaintInfo*);
void getSelectionGapInfo(SelectionState, bool& leftGap, bool& rightGap);
bool isSelectionRoot() const;
LayoutRect logicalRectToPhysicalRect(const LayoutPoint& physicalPosition, const LayoutRect& logicalRect);
void addContinuationWithOutline(RenderInline*);
bool paintsContinuationOutline(RenderInline*);
static RenderPtr<RenderBlock> createAnonymousWithParentRendererAndDisplay(const RenderBox& parent, DisplayType = DisplayType::Block);
RenderPtr<RenderBlock> createAnonymousBlock(DisplayType = DisplayType::Block) const;
RenderPtr<RenderBox> createAnonymousBoxWithSameTypeAs(const RenderBox&) const override;
static bool shouldSkipCreatingRunsForObject(RenderObject& obj)
{
return obj.isFloating() || (obj.isOutOfFlowPositioned() && !obj.style().isOriginalDisplayInlineType() && !obj.container()->isRenderInline());
}
static TextRun constructTextRun(StringView, const RenderStyle&,
ExpansionBehavior = DefaultExpansion, TextRunFlags = DefaultTextRunFlags);
static TextRun constructTextRun(const String&, const RenderStyle&,
ExpansionBehavior = DefaultExpansion, TextRunFlags = DefaultTextRunFlags);
static TextRun constructTextRun(const AtomString&, const RenderStyle&,
ExpansionBehavior = DefaultExpansion, TextRunFlags = DefaultTextRunFlags);
static TextRun constructTextRun(const RenderText&, const RenderStyle&,
ExpansionBehavior = DefaultExpansion);
static TextRun constructTextRun(const RenderText&, unsigned offset, unsigned length, const RenderStyle&,
ExpansionBehavior = DefaultExpansion);
static TextRun constructTextRun(const LChar* characters, unsigned length, const RenderStyle&,
ExpansionBehavior = DefaultExpansion);
static TextRun constructTextRun(const UChar* characters, unsigned length, const RenderStyle&,
ExpansionBehavior = DefaultExpansion);
LayoutUnit paginationStrut() const;
void setPaginationStrut(LayoutUnit);
// The page logical offset is the object's offset from the top of the page in the page progression
// direction (so an x-offset in vertical text and a y-offset for horizontal text).
LayoutUnit pageLogicalOffset() const;
void setPageLogicalOffset(LayoutUnit);
// Fieldset legends that are taller than the fieldset border add in intrinsic border
// in order to ensure that content gets properly pushed down across all layout systems
// (flexbox, block, etc.)
LayoutUnit intrinsicBorderForFieldset() const;
void setIntrinsicBorderForFieldset(LayoutUnit);
LayoutUnit borderTop() const override;
LayoutUnit borderBottom() const override;
LayoutUnit borderLeft() const override;
LayoutUnit borderRight() const override;
LayoutUnit borderBefore() const override;
LayoutUnit adjustBorderBoxLogicalHeightForBoxSizing(LayoutUnit height) const override;
LayoutUnit adjustContentBoxLogicalHeightForBoxSizing(Optional<LayoutUnit> height) const override;
void paintExcludedChildrenInBorder(PaintInfo&, const LayoutPoint&);
// Accessors for logical width/height and margins in the containing block's block-flow direction.
enum ApplyLayoutDeltaMode { ApplyLayoutDelta, DoNotApplyLayoutDelta };
LayoutUnit logicalWidthForChild(const RenderBox& child) const { return isHorizontalWritingMode() ? child.width() : child.height(); }
LayoutUnit logicalHeightForChild(const RenderBox& child) const { return isHorizontalWritingMode() ? child.height() : child.width(); }
LayoutSize logicalSizeForChild(const RenderBox& child) const { return isHorizontalWritingMode() ? child.size() : child.size().transposedSize(); }
LayoutUnit logicalTopForChild(const RenderBox& child) const { return isHorizontalWritingMode() ? child.y() : child.x(); }
void setLogicalLeftForChild(RenderBox& child, LayoutUnit logicalLeft, ApplyLayoutDeltaMode = DoNotApplyLayoutDelta);
void setLogicalTopForChild(RenderBox& child, LayoutUnit logicalTop, ApplyLayoutDeltaMode = DoNotApplyLayoutDelta);
LayoutUnit marginBeforeForChild(const RenderBoxModelObject& child) const { return child.marginBefore(&style()); }
LayoutUnit marginAfterForChild(const RenderBoxModelObject& child) const { return child.marginAfter(&style()); }
LayoutUnit marginStartForChild(const RenderBoxModelObject& child) const { return child.marginStart(&style()); }
LayoutUnit marginEndForChild(const RenderBoxModelObject& child) const { return child.marginEnd(&style()); }
void setMarginStartForChild(RenderBox& child, LayoutUnit value) const { child.setMarginStart(value, &style()); }
void setMarginEndForChild(RenderBox& child, LayoutUnit value) const { child.setMarginEnd(value, &style()); }
void setMarginBeforeForChild(RenderBox& child, LayoutUnit value) const { child.setMarginBefore(value, &style()); }
void setMarginAfterForChild(RenderBox& child, LayoutUnit value) const { child.setMarginAfter(value, &style()); }
LayoutUnit collapsedMarginBeforeForChild(const RenderBox& child) const;
LayoutUnit collapsedMarginAfterForChild(const RenderBox& child) const;
void getFirstLetter(RenderObject*& firstLetter, RenderElement*& firstLetterContainer, RenderObject* skipObject = nullptr);
virtual void scrollbarsChanged(bool /*horizontalScrollbarChanged*/, bool /*verticalScrollbarChanged*/) { }
LayoutUnit logicalLeftOffsetForContent(RenderFragmentContainer*) const;
LayoutUnit logicalRightOffsetForContent(RenderFragmentContainer*) const;
LayoutUnit availableLogicalWidthForContent(RenderFragmentContainer* fragment) const
{
return std::max<LayoutUnit>(0, logicalRightOffsetForContent(fragment) - logicalLeftOffsetForContent(fragment));
}
LayoutUnit startOffsetForContent(RenderFragmentContainer* fragment) const
{
return style().isLeftToRightDirection() ? logicalLeftOffsetForContent(fragment) : logicalWidth() - logicalRightOffsetForContent(fragment);
}
LayoutUnit endOffsetForContent(RenderFragmentContainer* fragment) const
{
return !style().isLeftToRightDirection() ? logicalLeftOffsetForContent(fragment) : logicalWidth() - logicalRightOffsetForContent(fragment);
}
LayoutUnit logicalLeftOffsetForContent(LayoutUnit blockOffset) const
{
return logicalLeftOffsetForContent(fragmentAtBlockOffset(blockOffset));
}
LayoutUnit logicalRightOffsetForContent(LayoutUnit blockOffset) const
{
return logicalRightOffsetForContent(fragmentAtBlockOffset(blockOffset));
}
LayoutUnit availableLogicalWidthForContent(LayoutUnit blockOffset) const
{
return availableLogicalWidthForContent(fragmentAtBlockOffset(blockOffset));
}
LayoutUnit startOffsetForContent(LayoutUnit blockOffset) const
{
return startOffsetForContent(fragmentAtBlockOffset(blockOffset));
}
LayoutUnit endOffsetForContent(LayoutUnit blockOffset) const
{
return endOffsetForContent(fragmentAtBlockOffset(blockOffset));
}
LayoutUnit logicalLeftOffsetForContent() const { return isHorizontalWritingMode() ? borderLeft() + paddingLeft() : borderTop() + paddingTop(); }
LayoutUnit logicalRightOffsetForContent() const { return logicalLeftOffsetForContent() + availableLogicalWidth(); }
LayoutUnit startOffsetForContent() const { return style().isLeftToRightDirection() ? logicalLeftOffsetForContent() : logicalWidth() - logicalRightOffsetForContent(); }
LayoutUnit endOffsetForContent() const { return !style().isLeftToRightDirection() ? logicalLeftOffsetForContent() : logicalWidth() - logicalRightOffsetForContent(); }
LayoutUnit logicalLeftSelectionOffset(RenderBlock& rootBlock, LayoutUnit position, const LogicalSelectionOffsetCaches&);
LayoutUnit logicalRightSelectionOffset(RenderBlock& rootBlock, LayoutUnit position, const LogicalSelectionOffsetCaches&);
LayoutUnit computeStartPositionDeltaForChildAvoidingFloats(const RenderBox& child, LayoutUnit childMarginStart, RenderFragmentContainer* = 0);
#if ASSERT_ENABLED
void checkPositionedObjectsNeedLayout();
#endif
void updateHitTestResult(HitTestResult&, const LayoutPoint&) override;
bool canHaveChildren() const override { return true; }
virtual bool canDropAnonymousBlockChild() const { return true; }
RenderFragmentedFlow* cachedEnclosingFragmentedFlow() const;
void setCachedEnclosingFragmentedFlowNeedsUpdate();
virtual bool cachedEnclosingFragmentedFlowNeedsUpdate() const;
void resetEnclosingFragmentedFlowAndChildInfoIncludingDescendants(RenderFragmentedFlow* = nullptr) final;
Optional<LayoutUnit> availableLogicalHeightForPercentageComputation() const;
bool hasDefiniteLogicalHeight() const;
virtual bool shouldResetChildLogicalHeightBeforeLayout(const RenderBox&) const { return false; }
protected:
RenderFragmentedFlow* locateEnclosingFragmentedFlow() const override;
void willBeDestroyed() override;
void layout() override;
void layoutPositionedObjects(bool relayoutChildren, bool fixedPositionObjectsOnly = false);
virtual void layoutPositionedObject(RenderBox&, bool relayoutChildren, bool fixedPositionObjectsOnly);
void markFixedPositionObjectForLayoutIfNeeded(RenderBox& child);
LayoutUnit marginIntrinsicLogicalWidthForChild(RenderBox&) const;
void paint(PaintInfo&, const LayoutPoint&) override;
void paintObject(PaintInfo&, const LayoutPoint&) override;
virtual void paintChildren(PaintInfo& forSelf, const LayoutPoint&, PaintInfo& forChild, bool usePrintRect);
enum PaintBlockType { PaintAsBlock, PaintAsInlineBlock };
bool paintChild(RenderBox&, PaintInfo& forSelf, const LayoutPoint&, PaintInfo& forChild, bool usePrintRect, PaintBlockType paintType = PaintAsBlock);
LayoutUnit logicalRightOffsetForLine(LayoutUnit logicalTop, LayoutUnit fixedOffset, bool applyTextIndent, LayoutUnit logicalHeight = 0_lu) const
{
return adjustLogicalRightOffsetForLine(logicalRightFloatOffsetForLine(logicalTop, fixedOffset, logicalHeight), applyTextIndent);
}
LayoutUnit logicalLeftOffsetForLine(LayoutUnit logicalTop, LayoutUnit fixedOffset, bool applyTextIndent, LayoutUnit logicalHeight = 0_lu) const
{
return adjustLogicalLeftOffsetForLine(logicalLeftFloatOffsetForLine(logicalTop, fixedOffset, logicalHeight), applyTextIndent);
}
bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) override;
void computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const override;
void computePreferredLogicalWidths() override;
Optional<int> firstLineBaseline() const override;
Optional<int> inlineBlockBaseline(LineDirectionMode) const override;
// Delay updating scrollbars until endAndCommitUpdateScrollInfoAfterLayoutTransaction() is called. These functions are used
// when a flexbox is laying out its descendants. If multiple calls are made to beginUpdateScrollInfoAfterLayoutTransaction()
// then endAndCommitUpdateScrollInfoAfterLayoutTransaction() will do nothing until it is called the same number of times.
void beginUpdateScrollInfoAfterLayoutTransaction();
void endAndCommitUpdateScrollInfoAfterLayoutTransaction();
void removeFromUpdateScrollInfoAfterLayoutTransaction();
void updateScrollInfoAfterLayout();
void styleWillChange(StyleDifference, const RenderStyle& newStyle) override;
void styleDidChange(StyleDifference, const RenderStyle* oldStyle) override;
virtual bool hasLineIfEmpty() const;
virtual bool canPerformSimplifiedLayout() const;
bool simplifiedLayout();
virtual void simplifiedNormalFlowLayout();
bool childBoxIsUnsplittableForFragmentation(const RenderBox& child) const;
public:
virtual void computeOverflow(LayoutUnit oldClientAfterEdge, bool recomputeFloats = false);
void clearLayoutOverflow();
// Adjust from painting offsets to the local coords of this renderer
void offsetForContents(LayoutPoint&) const;
// Obtains the nearest enclosing block (including this block) that contributes a first-line style to our inline
// children.
RenderBlock* firstLineBlock() const override;
enum FieldsetFindLegendOption { FieldsetIgnoreFloatingOrOutOfFlow, FieldsetIncludeFloatingOrOutOfFlow };
RenderBox* findFieldsetLegend(FieldsetFindLegendOption = FieldsetIgnoreFloatingOrOutOfFlow) const;
virtual void layoutExcludedChildren(bool /*relayoutChildren*/);
virtual bool computePreferredWidthsForExcludedChildren(LayoutUnit&, LayoutUnit&) const;
void adjustBorderBoxRectForPainting(LayoutRect&) override;
LayoutRect paintRectToClipOutFromBorder(const LayoutRect&) override;
bool isInlineBlockOrInlineTable() const final { return isInline() && isReplaced(); }
void absoluteRects(Vector<IntRect>&, const LayoutPoint& accumulatedOffset) const override;
void absoluteQuads(Vector<FloatQuad>&, bool* wasFixed) const override;
protected:
virtual void addOverflowFromChildren();
// FIXME-BLOCKFLOW: Remove virtualization when all callers have moved to RenderBlockFlow
virtual void addOverflowFromInlineChildren() { }
void addOverflowFromBlockChildren();
void addOverflowFromPositionedObjects();
void addVisualOverflowFromTheme();
void addFocusRingRects(Vector<LayoutRect>&, const LayoutPoint& additionalOffset, const RenderLayerModelObject* paintContainer = 0) override;
virtual void addFocusRingRectsForInlineChildren(Vector<LayoutRect>&, const LayoutPoint& additionalOffset, const RenderLayerModelObject* paintContainer);
void computeFragmentRangeForBoxChild(const RenderBox&) const;
void estimateFragmentRangeForBoxChild(const RenderBox&) const;
bool updateFragmentRangeForBoxChild(const RenderBox&) const;
void updateBlockChildDirtyBitsBeforeLayout(bool relayoutChildren, RenderBox&);
void preparePaginationBeforeBlockLayout(bool&);
void computeChildPreferredLogicalWidths(RenderObject&, LayoutUnit& minPreferredLogicalWidth, LayoutUnit& maxPreferredLogicalWidth) const;
void blockWillBeDestroyed();
private:
static RenderPtr<RenderBlock> createAnonymousBlockWithStyleAndDisplay(Document&, const RenderStyle&, DisplayType);
// FIXME-BLOCKFLOW: Remove virtualizaion when all callers have moved to RenderBlockFlow
virtual LayoutUnit logicalRightFloatOffsetForLine(LayoutUnit, LayoutUnit fixedOffset, LayoutUnit) const { return fixedOffset; };
// FIXME-BLOCKFLOW: Remove virtualizaion when all callers have moved to RenderBlockFlow
virtual LayoutUnit logicalLeftFloatOffsetForLine(LayoutUnit, LayoutUnit fixedOffset, LayoutUnit) const { return fixedOffset; }
LayoutUnit adjustLogicalRightOffsetForLine(LayoutUnit offsetFromFloats, bool applyTextIndent) const;
LayoutUnit adjustLogicalLeftOffsetForLine(LayoutUnit offsetFromFloats, bool applyTextIndent) const;
const char* renderName() const override;
bool isSelfCollapsingBlock() const override;
virtual bool childrenPreventSelfCollapsing() const;
Node* nodeForHitTest() const;
// FIXME-BLOCKFLOW: Remove virtualizaion when all callers have moved to RenderBlockFlow
virtual void paintFloats(PaintInfo&, const LayoutPoint&, bool) { }
virtual void paintInlineChildren(PaintInfo&, const LayoutPoint&) { }
void paintContents(PaintInfo&, const LayoutPoint&);
virtual void paintColumnRules(PaintInfo&, const LayoutPoint&) { };
void paintSelection(PaintInfo&, const LayoutPoint&);
void paintCaret(PaintInfo&, const LayoutPoint&, CaretType);
virtual bool hitTestContents(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction);
// FIXME-BLOCKFLOW: Remove virtualization when all callers have moved to RenderBlockFlow
virtual bool hitTestFloats(const HitTestRequest&, HitTestResult&, const HitTestLocation&, const LayoutPoint&) { return false; }
virtual bool hitTestInlineChildren(const HitTestRequest&, HitTestResult&, const HitTestLocation&, const LayoutPoint&, HitTestAction) { return false; }
bool hitTestExcludedChildrenInBorder(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction);
virtual bool isPointInOverflowControl(HitTestResult&, const LayoutPoint& locationInContainer, const LayoutPoint& accumulatedOffset);
void computeBlockPreferredLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const;
LayoutRect rectWithOutlineForRepaint(const RenderLayerModelObject* repaintContainer, LayoutUnit outlineWidth) const final;
const RenderStyle& outlineStyleForRepaint() const final;
void updateDragState(bool dragOn) final;
LayoutRect selectionRectForRepaint(const RenderLayerModelObject* repaintContainer, bool /*clipToVisibleContent*/) final
{
return selectionGapRectsForRepaint(repaintContainer);
}
bool shouldPaintSelectionGaps() const final;
GapRects selectionGaps(RenderBlock& rootBlock, const LayoutPoint& rootBlockPhysicalPosition, const LayoutSize& offsetFromRootBlock,
LayoutUnit& lastLogicalTop, LayoutUnit& lastLogicalLeft, LayoutUnit& lastLogicalRight, const LogicalSelectionOffsetCaches&, const PaintInfo* = 0);
// FIXME-BLOCKFLOW: Remove virtualizaion when all callers have moved to RenderBlockFlow
virtual GapRects inlineSelectionGaps(RenderBlock& rootBlock, const LayoutPoint& rootBlockPhysicalPosition, const LayoutSize& offsetFromRootBlock,
LayoutUnit& lastLogicalTop, LayoutUnit& lastLogicalLeft, LayoutUnit& lastLogicalRight, const LogicalSelectionOffsetCaches&, const PaintInfo*);
GapRects blockSelectionGaps(RenderBlock& rootBlock, const LayoutPoint& rootBlockPhysicalPosition, const LayoutSize& offsetFromRootBlock,
LayoutUnit& lastLogicalTop, LayoutUnit& lastLogicalLeft, LayoutUnit& lastLogicalRight, const LogicalSelectionOffsetCaches&, const PaintInfo*);
LayoutRect blockSelectionGap(RenderBlock& rootBlock, const LayoutPoint& rootBlockPhysicalPosition, const LayoutSize& offsetFromRootBlock,
LayoutUnit lastLogicalTop, LayoutUnit lastLogicalLeft, LayoutUnit lastLogicalRight, LayoutUnit logicalBottom, const LogicalSelectionOffsetCaches&, const PaintInfo*);
// FIXME-BLOCKFLOW: Remove virtualizaion when all callers have moved to RenderBlockFlow
virtual void clipOutFloatingObjects(RenderBlock&, const PaintInfo*, const LayoutPoint&, const LayoutSize&) { };
friend class LogicalSelectionOffsetCaches;
void paintContinuationOutlines(PaintInfo&, const LayoutPoint&);
LayoutRect localCaretRect(InlineBox*, unsigned caretOffset, LayoutUnit* extraWidthToEndOfLine = 0) final;
// FIXME-BLOCKFLOW: Remove virtualizaion when all callers have moved to RenderBlockFlow
virtual VisiblePosition positionForPointWithInlineChildren(const LayoutPoint&, const RenderFragmentContainer*);
RenderPtr<RenderBlock> clone() const;
RenderFragmentedFlow* updateCachedEnclosingFragmentedFlow(RenderFragmentedFlow*) const;
void removePositionedObjectsIfNeeded(const RenderStyle& oldStyle, const RenderStyle& newStyle);
void absoluteQuadsIgnoringContinuation(const FloatRect&, Vector<FloatQuad>&, bool* wasFixed) const override;
private:
bool hasRareData() const;
protected:
void dirtyForLayoutFromPercentageHeightDescendants();
protected:
bool recomputeLogicalWidth();
public:
LayoutUnit offsetFromLogicalTopOfFirstPage() const override;
RenderFragmentContainer* fragmentAtBlockOffset(LayoutUnit) const;
// FIXME: This is temporary to allow us to move code from RenderBlock into RenderBlockFlow that accesses member variables that we haven't moved out of
// RenderBlock yet.
friend class RenderBlockFlow;
// FIXME-BLOCKFLOW: Remove this when the line layout stuff has all moved out of RenderBlock
friend class LineBreaker;
// RenderRubyBase objects need to be able to split and merge, moving their children around
// (calling moveChildTo, moveAllChildrenTo, and makeChildrenNonInline).
friend class RenderRubyBase;
private:
// Used to store state between styleWillChange and styleDidChange
static bool s_canPropagateFloatIntoSibling;
};
LayoutUnit blockDirectionOffset(RenderBlock& rootBlock, const LayoutSize& offsetFromRootBlock);
LayoutUnit inlineDirectionOffset(RenderBlock& rootBlock, const LayoutSize& offsetFromRootBlock);
VisiblePosition positionForPointRespectingEditingBoundaries(RenderBlock&, RenderBox&, const LayoutPoint&);
inline RenderPtr<RenderBlock> RenderBlock::createAnonymousWithParentRendererAndDisplay(const RenderBox& parent, DisplayType display)
{
return createAnonymousBlockWithStyleAndDisplay(parent.document(), parent.style(), display);
}
inline RenderPtr<RenderBox> RenderBlock::createAnonymousBoxWithSameTypeAs(const RenderBox& renderer) const
{
return createAnonymousBlockWithStyleAndDisplay(document(), renderer.style(), style().display());
}
inline RenderPtr<RenderBlock> RenderBlock::createAnonymousBlock(DisplayType display) const
{
return createAnonymousBlockWithStyleAndDisplay(document(), style(), display);
}
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(RenderBlock, isRenderBlock())