| /* |
| * 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. |
| */ |
| |
| #ifndef RenderBlock_h |
| #define RenderBlock_h |
| |
| #include "ColumnInfo.h" |
| #include "GapRects.h" |
| #include "PODIntervalTree.h" |
| #include "RenderBox.h" |
| #include "RootInlineBox.h" |
| #include "TextBreakIterator.h" |
| #include "TextRun.h" |
| #include <wtf/OwnPtr.h> |
| #include <wtf/ListHashSet.h> |
| |
| #if ENABLE(CSS_SHAPES) |
| #include "ShapeInsideInfo.h" |
| #include "ShapeValue.h" |
| #endif |
| |
| namespace WebCore { |
| |
| class BidiContext; |
| class InlineIterator; |
| class LayoutStateMaintainer; |
| class LineLayoutState; |
| class LineWidth; |
| class LogicalSelectionOffsetCaches; |
| class RenderInline; |
| class RenderText; |
| |
| struct BidiRun; |
| struct PaintInfo; |
| class LineInfo; |
| class RenderRubyRun; |
| #if ENABLE(CSS_SHAPES) |
| class BasicShape; |
| #endif |
| class TextLayout; |
| class WordMeasurement; |
| |
| template <class Iterator, class Run> class BidiResolver; |
| template <class Run> class BidiRunList; |
| template <class Iterator> struct MidpointState; |
| typedef BidiResolver<InlineIterator, BidiRun> InlineBidiResolver; |
| typedef MidpointState<InlineIterator> LineMidpointState; |
| typedef WTF::ListHashSet<RenderBox*, 16> TrackedRendererListHashSet; |
| typedef WTF::HashMap<const RenderBlock*, OwnPtr<TrackedRendererListHashSet>> TrackedDescendantsMap; |
| typedef WTF::HashMap<const RenderBox*, OwnPtr<HashSet<RenderBlock*>>> TrackedContainerMap; |
| typedef Vector<WordMeasurement, 64> WordMeasurements; |
| |
| enum CaretType { CursorCaret, DragCaret }; |
| enum ContainingBlockState { NewContainingBlock, SameContainingBlock }; |
| |
| #if ENABLE(IOS_TEXT_AUTOSIZING) |
| enum LineCount { |
| NOT_SET = 0, NO_LINE = 1, ONE_LINE = 2, MULTI_LINE = 3 |
| }; |
| #endif |
| |
| enum TextRunFlag { |
| DefaultTextRunFlags = 0, |
| RespectDirection = 1 << 0, |
| RespectDirectionOverride = 1 << 1 |
| }; |
| |
| typedef unsigned TextRunFlags; |
| |
| class RenderBlock : public RenderBox { |
| public: |
| friend class LineLayoutState; |
| |
| protected: |
| RenderBlock(Element&, PassRef<RenderStyle>, unsigned baseTypeFlags); |
| RenderBlock(Document&, PassRef<RenderStyle>, unsigned baseTypeFlags); |
| virtual ~RenderBlock(); |
| |
| public: |
| bool beingDestroyed() const { return m_beingDestroyed; } |
| |
| // These two functions are overridden for inline-block. |
| virtual LayoutUnit lineHeight(bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const OVERRIDE FINAL; |
| virtual 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 addChild(RenderObject* newChild, RenderObject* beforeChild = 0) OVERRIDE; |
| virtual void removeChild(RenderObject&) OVERRIDE; |
| |
| virtual void layoutBlock(bool relayoutChildren, LayoutUnit pageLogicalHeight = 0); |
| |
| void invalidateLineLayoutPath(); |
| |
| void insertPositionedObject(RenderBox&); |
| static void removePositionedObject(RenderBox&); |
| void removePositionedObjects(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; |
| static bool hasPercentHeightContainerMap(); |
| static bool hasPercentHeightDescendant(RenderBox&); |
| static void clearPercentHeightDescendantsFrom(RenderBox&); |
| static void removePercentHeightDescendantIfNeeded(RenderBox&); |
| |
| void setHasMarginBeforeQuirk(bool b) { m_hasMarginBeforeQuirk = b; } |
| void setHasMarginAfterQuirk(bool b) { m_hasMarginAfterQuirk = b; } |
| |
| bool hasMarginBeforeQuirk() const { return m_hasMarginBeforeQuirk; } |
| bool hasMarginAfterQuirk() const { return m_hasMarginAfterQuirk; } |
| |
| bool hasMarginBeforeQuirk(const RenderBox& child) const; |
| bool hasMarginAfterQuirk(const RenderBox& child) const; |
| |
| bool generatesLineBoxesForInlineChild(RenderObject*); |
| |
| void markPositionedObjectsForLayout(); |
| virtual void markForPaginationRelayoutIfNeeded() OVERRIDE FINAL; |
| |
| // 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 region and page offset passed in. Used for speed to avoid having to |
| // compute the region all over again when you already know it. |
| LayoutUnit availableLogicalWidthForLineInRegion(LayoutUnit position, bool shouldIndentText, RenderRegion* region, LayoutUnit logicalHeight = 0) const |
| { |
| return std::max<LayoutUnit>(0, logicalRightOffsetForLineInRegion(position, shouldIndentText, region, logicalHeight) |
| - logicalLeftOffsetForLineInRegion(position, shouldIndentText, region, logicalHeight)); |
| } |
| LayoutUnit logicalRightOffsetForLineInRegion(LayoutUnit position, bool shouldIndentText, RenderRegion* region, LayoutUnit logicalHeight = 0) const |
| { |
| return logicalRightOffsetForLine(position, logicalRightOffsetForContent(region), shouldIndentText, logicalHeight); |
| } |
| LayoutUnit logicalLeftOffsetForLineInRegion(LayoutUnit position, bool shouldIndentText, RenderRegion* region, LayoutUnit logicalHeight = 0) const |
| { |
| return logicalLeftOffsetForLine(position, logicalLeftOffsetForContent(region), shouldIndentText, logicalHeight); |
| } |
| LayoutUnit startOffsetForLineInRegion(LayoutUnit position, bool shouldIndentText, RenderRegion* region, LayoutUnit logicalHeight = 0) const |
| { |
| return style().isLeftToRightDirection() ? logicalLeftOffsetForLineInRegion(position, shouldIndentText, region, logicalHeight) |
| : logicalWidth() - logicalRightOffsetForLineInRegion(position, shouldIndentText, region, logicalHeight); |
| } |
| LayoutUnit endOffsetForLineInRegion(LayoutUnit position, bool shouldIndentText, RenderRegion* region, LayoutUnit logicalHeight = 0) const |
| { |
| return !style().isLeftToRightDirection() ? logicalLeftOffsetForLineInRegion(position, shouldIndentText, region, logicalHeight) |
| : logicalWidth() - logicalRightOffsetForLineInRegion(position, shouldIndentText, region, logicalHeight); |
| } |
| |
| LayoutUnit availableLogicalWidthForLine(LayoutUnit position, bool shouldIndentText, LayoutUnit logicalHeight = 0) const |
| { |
| return availableLogicalWidthForLineInRegion(position, shouldIndentText, regionAtBlockOffset(position), logicalHeight); |
| } |
| LayoutUnit logicalRightOffsetForLine(LayoutUnit position, bool shouldIndentText, LayoutUnit logicalHeight = 0) const |
| { |
| return logicalRightOffsetForLine(position, logicalRightOffsetForContent(position), shouldIndentText, logicalHeight); |
| } |
| LayoutUnit logicalLeftOffsetForLine(LayoutUnit position, bool shouldIndentText, LayoutUnit logicalHeight = 0) const |
| { |
| return logicalLeftOffsetForLine(position, logicalLeftOffsetForContent(position), shouldIndentText, logicalHeight); |
| } |
| LayoutUnit pixelSnappedLogicalLeftOffsetForLine(LayoutUnit position, bool shouldIndentText, LayoutUnit logicalHeight = 0) const |
| { |
| return roundToInt(logicalLeftOffsetForLine(position, shouldIndentText, logicalHeight)); |
| } |
| LayoutUnit pixelSnappedLogicalRightOffsetForLine(LayoutUnit position, bool shouldIndentText, LayoutUnit logicalHeight = 0) const |
| { |
| // FIXME: Multicolumn layouts break carrying over subpixel values to the logical right offset because the lines may be shifted |
| // by a subpixel value for all but the first column. This can lead to the actual pixel snapped width of the column being off |
| // by one pixel when rendered versus layed out, which can result in the line being clipped. For now, we have to floor. |
| // https://bugs.webkit.org/show_bug.cgi?id=105461 |
| return floorToInt(logicalRightOffsetForLine(position, shouldIndentText, logicalHeight)); |
| } |
| LayoutUnit startOffsetForLine(LayoutUnit position, bool shouldIndentText, LayoutUnit logicalHeight = 0) const |
| { |
| return style().isLeftToRightDirection() ? logicalLeftOffsetForLine(position, shouldIndentText, logicalHeight) |
| : logicalWidth() - logicalRightOffsetForLine(position, shouldIndentText, logicalHeight); |
| } |
| LayoutUnit endOffsetForLine(LayoutUnit position, bool shouldIndentText, LayoutUnit logicalHeight = 0) const |
| { |
| return !style().isLeftToRightDirection() ? logicalLeftOffsetForLine(position, shouldIndentText, logicalHeight) |
| : logicalWidth() - logicalRightOffsetForLine(position, shouldIndentText, logicalHeight); |
| } |
| |
| LayoutUnit startAlignedOffsetForLine(LayoutUnit position, bool shouldIndentText); |
| LayoutUnit textIndentOffset() const; |
| |
| virtual VisiblePosition positionForPoint(const LayoutPoint&) OVERRIDE; |
| |
| // Block flows subclass availableWidth to handle multi column layout (shrinking the width available to children when laying out.) |
| virtual LayoutUnit availableLogicalWidth() const OVERRIDE FINAL; |
| |
| LayoutPoint flipForWritingModeIncludingColumns(const LayoutPoint&) const; |
| void adjustStartEdgeForWritingModeIncludingColumns(LayoutRect&) const; |
| |
| GapRects selectionGapRectsForRepaint(const RenderLayerModelObject* repaintContainer); |
| LayoutRect logicalLeftSelectionGap(RenderBlock& rootBlock, const LayoutPoint& rootBlockPhysicalPosition, const LayoutSize& offsetFromRootBlock, |
| RenderObject* selObj, LayoutUnit logicalLeft, LayoutUnit logicalTop, LayoutUnit logicalHeight, const LogicalSelectionOffsetCaches&, const PaintInfo*); |
| LayoutRect logicalRightSelectionGap(RenderBlock& rootBlock, const LayoutPoint& rootBlockPhysicalPosition, const LayoutSize& offsetFromRootBlock, |
| RenderObject* selObj, LayoutUnit logicalRight, LayoutUnit logicalTop, LayoutUnit logicalHeight, const LogicalSelectionOffsetCaches&, const PaintInfo*); |
| void getSelectionGapInfo(SelectionState, bool& leftGap, bool& rightGap); |
| RenderBlock* blockBeforeWithinSelectionRoot(LayoutSize& offset) const; |
| |
| LayoutRect logicalRectToPhysicalRect(const LayoutPoint& physicalPosition, const LayoutRect& logicalRect); |
| |
| void adjustRectForColumns(LayoutRect&) const; |
| virtual void adjustForColumns(LayoutSize&, const LayoutPoint&) const OVERRIDE FINAL; |
| void adjustForColumnRect(LayoutSize& offset, const LayoutPoint& locationInContainer) const; |
| |
| void addContinuationWithOutline(RenderInline*); |
| bool paintsContinuationOutline(RenderInline*); |
| |
| virtual RenderBoxModelObject* virtualContinuation() const OVERRIDE FINAL { return continuation(); } |
| bool isAnonymousBlockContinuation() const { return isAnonymousBlock() && continuation(); } |
| RenderInline* inlineElementContinuation() const; |
| RenderBlock* blockElementContinuation() const; |
| |
| using RenderBoxModelObject::continuation; |
| using RenderBoxModelObject::setContinuation; |
| |
| static RenderBlock* createAnonymousWithParentRendererAndDisplay(const RenderObject*, EDisplay = BLOCK); |
| static RenderBlock* createAnonymousColumnsWithParentRenderer(const RenderObject*); |
| static RenderBlock* createAnonymousColumnSpanWithParentRenderer(const RenderObject*); |
| RenderBlock* createAnonymousBlock(EDisplay display = BLOCK) const { return createAnonymousWithParentRendererAndDisplay(this, display); } |
| RenderBlock* createAnonymousColumnsBlock() const { return createAnonymousColumnsWithParentRenderer(this); } |
| RenderBlock* createAnonymousColumnSpanBlock() const { return createAnonymousColumnSpanWithParentRenderer(this); } |
| static void collapseAnonymousBoxChild(RenderBlock* parent, RenderBlock* child); |
| |
| virtual RenderBox* createAnonymousBoxWithSameTypeAs(const RenderObject* parent) const OVERRIDE; |
| |
| static bool shouldSkipCreatingRunsForObject(RenderObject* obj) |
| { |
| return obj->isFloating() || (obj->isOutOfFlowPositioned() && !obj->style().isOriginalDisplayInlineType() && !obj->container()->isRenderInline()); |
| } |
| |
| static TextRun constructTextRun(RenderObject* context, const Font&, const String&, const RenderStyle&, |
| TextRun::ExpansionBehavior = TextRun::AllowTrailingExpansion | TextRun::ForbidLeadingExpansion, TextRunFlags = DefaultTextRunFlags); |
| |
| static TextRun constructTextRun(RenderObject* context, const Font&, const RenderText*, const RenderStyle&, |
| TextRun::ExpansionBehavior = TextRun::AllowTrailingExpansion | TextRun::ForbidLeadingExpansion); |
| |
| static TextRun constructTextRun(RenderObject* context, const Font&, const RenderText*, unsigned offset, unsigned length, const RenderStyle&, |
| TextRun::ExpansionBehavior = TextRun::AllowTrailingExpansion | TextRun::ForbidLeadingExpansion); |
| |
| static TextRun constructTextRun(RenderObject* context, const Font&, const RenderText*, unsigned offset, const RenderStyle&, |
| TextRun::ExpansionBehavior = TextRun::AllowTrailingExpansion | TextRun::ForbidLeadingExpansion); |
| |
| #if ENABLE(8BIT_TEXTRUN) |
| static TextRun constructTextRun(RenderObject* context, const Font&, const LChar* characters, int length, const RenderStyle&, |
| TextRun::ExpansionBehavior = TextRun::AllowTrailingExpansion | TextRun::ForbidLeadingExpansion); |
| #endif |
| |
| static TextRun constructTextRun(RenderObject* context, const Font&, const UChar* characters, int length, const RenderStyle&, |
| TextRun::ExpansionBehavior = TextRun::AllowTrailingExpansion | TextRun::ForbidLeadingExpansion); |
| |
| ColumnInfo* columnInfo() const; |
| int columnGap() const; |
| |
| void updateColumnInfoFromStyle(RenderStyle*); |
| |
| LayoutUnit initialBlockOffsetForPainting() const; |
| LayoutUnit blockDeltaForPaintingNextColumn() const; |
| |
| // These two functions take the ColumnInfo* to avoid repeated lookups of the info in the global HashMap. |
| unsigned columnCount(ColumnInfo*) const; |
| LayoutRect columnRectAt(ColumnInfo*, unsigned) const; |
| |
| 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); |
| |
| // 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(); } |
| 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 updateLogicalWidthForAlignment(const ETextAlign&, BidiRun* trailingSpaceRun, float& logicalLeft, float& totalLogicalWidth, float& availableLogicalWidth, int expansionOpportunityCount); |
| |
| virtual void updateFirstLetter(); |
| |
| virtual void scrollbarsChanged(bool /*horizontalScrollbarChanged*/, bool /*verticalScrollbarChanged*/) { } |
| |
| LayoutUnit logicalLeftOffsetForContent(RenderRegion*) const; |
| LayoutUnit logicalRightOffsetForContent(RenderRegion*) const; |
| LayoutUnit availableLogicalWidthForContent(RenderRegion* region) const |
| { |
| return std::max<LayoutUnit>(0, logicalRightOffsetForContent(region) - logicalLeftOffsetForContent(region)); |
| } |
| LayoutUnit startOffsetForContent(RenderRegion* region) const |
| { |
| return style().isLeftToRightDirection() ? logicalLeftOffsetForContent(region) : logicalWidth() - logicalRightOffsetForContent(region); |
| } |
| LayoutUnit endOffsetForContent(RenderRegion* region) const |
| { |
| return !style().isLeftToRightDirection() ? logicalLeftOffsetForContent(region) : logicalWidth() - logicalRightOffsetForContent(region); |
| } |
| LayoutUnit logicalLeftOffsetForContent(LayoutUnit blockOffset) const |
| { |
| return logicalLeftOffsetForContent(regionAtBlockOffset(blockOffset)); |
| } |
| LayoutUnit logicalRightOffsetForContent(LayoutUnit blockOffset) const |
| { |
| return logicalRightOffsetForContent(regionAtBlockOffset(blockOffset)); |
| } |
| LayoutUnit availableLogicalWidthForContent(LayoutUnit blockOffset) const |
| { |
| return availableLogicalWidthForContent(regionAtBlockOffset(blockOffset)); |
| } |
| LayoutUnit startOffsetForContent(LayoutUnit blockOffset) const |
| { |
| return startOffsetForContent(regionAtBlockOffset(blockOffset)); |
| } |
| LayoutUnit endOffsetForContent(LayoutUnit blockOffset) const |
| { |
| return endOffsetForContent(regionAtBlockOffset(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 computeStartPositionDeltaForChildAvoidingFloats(const RenderBox& child, LayoutUnit childMarginStart, RenderRegion* = 0); |
| |
| void placeRunInIfNeeded(RenderObject& newChild); |
| bool runInIsPlacedIntoSiblingBlock(RenderObject& runIn); |
| |
| #ifndef NDEBUG |
| void checkPositionedObjectsNeedLayout(); |
| virtual void showLineTreeAndMark(const InlineBox* = nullptr, const char* = nullptr, const InlineBox* = nullptr, const char* = nullptr, const RenderObject* = nullptr) const; |
| #endif |
| |
| #if ENABLE(IOS_TEXT_AUTOSIZING) |
| int immediateLineCount(); |
| void adjustComputedFontSizes(float size, float visibleWidth); |
| void resetComputedFontSize() |
| { |
| m_widthForTextAutosizing = -1; |
| m_lineCountForTextAutosizing = NOT_SET; |
| } |
| #endif |
| |
| #if ENABLE(CSS_SHAPES) |
| ShapeInsideInfo* ensureShapeInsideInfo(); |
| ShapeInsideInfo* shapeInsideInfo() const; |
| void setShapeInsideInfo(PassOwnPtr<ShapeInsideInfo> value); |
| |
| void markShapeInsideDescendantsForLayout(); |
| ShapeInsideInfo* layoutShapeInsideInfo() const; |
| bool allowsShapeInsideInfoSharing() const { return !isInline() && !isFloating(); } |
| LayoutSize logicalOffsetFromShapeAncestorContainer(const RenderBlock* container) const; |
| virtual void imageChanged(WrappedImagePtr, const IntRect* = 0) OVERRIDE; |
| #endif |
| |
| virtual void updateHitTestResult(HitTestResult&, const LayoutPoint&) OVERRIDE; |
| |
| virtual bool canHaveChildren() const OVERRIDE { return true; } |
| |
| protected: |
| virtual void willBeDestroyed() OVERRIDE; |
| |
| virtual void layout() OVERRIDE; |
| |
| void layoutPositionedObjects(bool relayoutChildren, bool fixedPositionObjectsOnly = false); |
| void markFixedPositionObjectForLayoutIfNeeded(RenderObject& child); |
| |
| virtual void paint(PaintInfo&, const LayoutPoint&) OVERRIDE; |
| virtual void paintObject(PaintInfo&, const LayoutPoint&) OVERRIDE; |
| virtual void paintChildren(PaintInfo& forSelf, const LayoutPoint&, PaintInfo& forChild, bool usePrintRect); |
| bool paintChild(RenderBox&, PaintInfo& forSelf, const LayoutPoint&, PaintInfo& forChild, bool usePrintRect); |
| |
| LayoutUnit logicalRightOffsetForLine(LayoutUnit logicalTop, LayoutUnit fixedOffset, bool applyTextIndent, LayoutUnit logicalHeight = 0) const |
| { |
| return adjustLogicalRightOffsetForLine(logicalRightFloatOffsetForLine(logicalTop, fixedOffset, logicalHeight), applyTextIndent); |
| } |
| LayoutUnit logicalLeftOffsetForLine(LayoutUnit logicalTop, LayoutUnit fixedOffset, bool applyTextIndent, LayoutUnit logicalHeight = 0) const |
| { |
| return adjustLogicalLeftOffsetForLine(logicalLeftFloatOffsetForLine(logicalTop, fixedOffset, logicalHeight), applyTextIndent); |
| } |
| |
| virtual ETextAlign textAlignmentForLine(bool endsWithSoftBreak) const; |
| virtual void adjustInlineDirectionLineBounds(int /* expansionOpportunityCount */, float& /* logicalLeft */, float& /* logicalWidth */) const { } |
| |
| virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) OVERRIDE; |
| |
| virtual void computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const OVERRIDE; |
| virtual void computePreferredLogicalWidths() OVERRIDE; |
| void adjustIntrinsicLogicalWidthsForColumns(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const; |
| |
| virtual int firstLineBaseline() const OVERRIDE; |
| virtual int inlineBlockBaseline(LineDirectionMode) const OVERRIDE; |
| |
| // Delay update scrollbar until finishDelayRepaint() will be |
| // called. This function is used when a flexbox is laying out its |
| // descendant. If multiple calls are made to startDelayRepaint(), |
| // finishDelayRepaint() will do nothing until finishDelayRepaint() |
| // is called the same number of times. |
| static void startDelayUpdateScrollInfo(); |
| static void finishDelayUpdateScrollInfo(); |
| |
| void updateScrollInfoAfterLayout(); |
| void removeFromDelayedUpdateScrollInfoSet(); |
| |
| virtual void styleWillChange(StyleDifference, const RenderStyle& newStyle) OVERRIDE; |
| virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) OVERRIDE; |
| |
| virtual bool hasLineIfEmpty() const; |
| |
| bool simplifiedLayout(); |
| virtual void simplifiedNormalFlowLayout(); |
| |
| void setDesiredColumnCountAndWidth(int, LayoutUnit); |
| |
| public: |
| virtual void computeOverflow(LayoutUnit oldClientAfterEdge, bool recomputeFloats = false); |
| void clearLayoutOverflow(); |
| protected: |
| virtual void addOverflowFromChildren(); |
| // FIXME-BLOCKFLOW: Remove virtualizaion when all callers have moved to RenderBlockFlow |
| virtual void addOverflowFromInlineChildren() { } |
| void addOverflowFromBlockChildren(); |
| void addOverflowFromPositionedObjects(); |
| void addVisualOverflowFromTheme(); |
| |
| virtual void addFocusRingRects(Vector<IntRect>&, const LayoutPoint& additionalOffset, const RenderLayerModelObject* paintContainer = 0) OVERRIDE; |
| virtual void addFocusRingRectsForInlineChildren(Vector<IntRect>&, const LayoutPoint& additionalOffset, const RenderLayerModelObject* paintContainer); |
| |
| bool updateShapesBeforeBlockLayout(); |
| void updateShapesAfterBlockLayout(bool heightChanged = false); |
| void computeRegionRangeForBoxChild(const RenderBox&) const; |
| |
| void estimateRegionRangeForBoxChild(const RenderBox&) const; |
| bool updateRegionRangeForBoxChild(const RenderBox&) const; |
| |
| void updateBlockChildDirtyBitsBeforeLayout(bool relayoutChildren, RenderBox&); |
| |
| virtual void checkForPaginationLogicalHeightChange(LayoutUnit& pageLogicalHeight, bool& pageLogicalHeightChanged, bool& hasSpecifiedPageLogicalHeight); |
| void prepareShapesAndPaginationBeforeBlockLayout(bool&); |
| |
| private: |
| // 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; |
| |
| #if ENABLE(CSS_SHAPES) |
| void computeShapeSize(); |
| void updateShapeInsideInfoAfterStyleChange(const ShapeValue*, const ShapeValue* oldShape); |
| void relayoutShapeDescendantIfMoved(RenderBlock* child, LayoutSize offset); |
| #endif |
| |
| virtual const char* renderName() const OVERRIDE; |
| |
| virtual bool isInlineBlockOrInlineTable() const OVERRIDE FINAL { return isInline() && isReplaced(); } |
| |
| void makeChildrenNonInline(RenderObject* insertionPoint = nullptr); |
| virtual void removeLeftoverAnonymousBlock(RenderBlock* child); |
| |
| // FIXME-BLOCKFLOW: Remove virtualizaion when all callers have moved to RenderBlockFlow |
| virtual void moveAllChildrenIncludingFloatsTo(RenderBlock* toBlock, bool fullRemoveInsert) { moveAllChildrenTo(toBlock, fullRemoveInsert); } |
| |
| void addChildToContinuation(RenderObject* newChild, RenderObject* beforeChild); |
| virtual void addChildIgnoringContinuation(RenderObject* newChild, RenderObject* beforeChild) OVERRIDE; |
| void addChildToAnonymousColumnBlocks(RenderObject* newChild, RenderObject* beforeChild); |
| |
| void addChildIgnoringAnonymousColumnBlocks(RenderObject* newChild, RenderObject* beforeChild = 0); |
| |
| virtual bool isSelfCollapsingBlock() const OVERRIDE FINAL; |
| // FIXME-BLOCKFLOW: Remove virtualizaion when all callers have moved to RenderBlockFlow |
| virtual bool hasLines() const { return false; } |
| |
| void insertIntoTrackedRendererMaps(RenderBox& descendant, TrackedDescendantsMap*&, TrackedContainerMap*&); |
| static void removeFromTrackedRendererMaps(RenderBox& descendant, TrackedDescendantsMap*&, TrackedContainerMap*&); |
| |
| // Called to lay out the legend for a fieldset or the ruby text of a ruby run. |
| virtual RenderObject* layoutSpecialExcludedChild(bool /*relayoutChildren*/) { return 0; } |
| |
| void createFirstLetterRenderer(RenderObject* firstLetterBlock, RenderText* currentTextChild); |
| void updateFirstLetterStyle(RenderObject* firstLetterBlock, RenderObject* firstLetterContainer); |
| |
| 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&); |
| void paintColumnContents(PaintInfo&, const LayoutPoint&, bool paintFloats = false); |
| void paintColumnRules(PaintInfo&, const LayoutPoint&); |
| void paintSelection(PaintInfo&, const LayoutPoint&); |
| void paintCaret(PaintInfo&, const LayoutPoint&, CaretType); |
| |
| virtual bool avoidsFloats() const OVERRIDE; |
| |
| bool hitTestColumns(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction); |
| virtual bool hitTestContents(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction); |
| // FIXME-BLOCKFLOW: Remove virtualizaion 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; } |
| |
| virtual bool isPointInOverflowControl(HitTestResult&, const LayoutPoint& locationInContainer, const LayoutPoint& accumulatedOffset); |
| |
| // FIXME: Make this method const so we can remove the const_cast in computeIntrinsicLogicalWidths. |
| void computeInlinePreferredLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth); |
| void computeBlockPreferredLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const; |
| |
| // Obtains the nearest enclosing block (including this block) that contributes a first-line style to our inline |
| // children. |
| virtual RenderBlock* firstLineBlock() const OVERRIDE; |
| |
| virtual LayoutRect rectWithOutlineForRepaint(const RenderLayerModelObject* repaintContainer, LayoutUnit outlineWidth) const OVERRIDE FINAL; |
| virtual const RenderStyle& outlineStyleForRepaint() const OVERRIDE FINAL; |
| |
| virtual RenderElement* hoverAncestor() const OVERRIDE FINAL; |
| virtual void updateDragState(bool dragOn) OVERRIDE FINAL; |
| virtual void childBecameNonInline(RenderObject* child) OVERRIDE FINAL; |
| |
| virtual LayoutRect selectionRectForRepaint(const RenderLayerModelObject* repaintContainer, bool /*clipToVisibleContent*/) OVERRIDE FINAL |
| { |
| return selectionGapRectsForRepaint(repaintContainer); |
| } |
| virtual bool shouldPaintSelectionGaps() const OVERRIDE FINAL; |
| bool isSelectionRoot() const; |
| 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*); |
| LayoutUnit logicalLeftSelectionOffset(RenderBlock& rootBlock, LayoutUnit position, const LogicalSelectionOffsetCaches&); |
| LayoutUnit logicalRightSelectionOffset(RenderBlock& rootBlock, LayoutUnit position, const LogicalSelectionOffsetCaches&); |
| |
| // FIXME-BLOCKFLOW: Remove virtualizaion when all callers have moved to RenderBlockFlow |
| virtual void clipOutFloatingObjects(RenderBlock&, const PaintInfo*, const LayoutPoint&, const LayoutSize&) { }; |
| friend class LogicalSelectionOffsetCaches; |
| |
| virtual void absoluteRects(Vector<IntRect>&, const LayoutPoint& accumulatedOffset) const OVERRIDE; |
| virtual void absoluteQuads(Vector<FloatQuad>&, bool* wasFixed) const OVERRIDE; |
| |
| LayoutUnit desiredColumnWidth() const; |
| unsigned desiredColumnCount() const; |
| |
| void paintContinuationOutlines(PaintInfo&, const LayoutPoint&); |
| |
| virtual LayoutRect localCaretRect(InlineBox*, int caretOffset, LayoutUnit* extraWidthToEndOfLine = 0) OVERRIDE FINAL; |
| |
| void adjustPointToColumnContents(LayoutPoint&) const; |
| |
| // FIXME-BLOCKFLOW: Remove virtualizaion when all callers have moved to RenderBlockFlow |
| virtual VisiblePosition positionForPointWithInlineChildren(const LayoutPoint&); |
| |
| virtual void calcColumnWidth(); |
| void makeChildrenAnonymousColumnBlocks(RenderObject* beforeChild, RenderBlock* newBlockBox, RenderObject* newChild); |
| |
| bool expandsToEncloseOverhangingFloats() const; |
| |
| void splitBlocks(RenderBlock* fromBlock, RenderBlock* toBlock, RenderBlock* middleBlock, |
| RenderObject* beforeChild, RenderBoxModelObject* oldCont); |
| void splitFlow(RenderObject* beforeChild, RenderBlock* newBlockBox, |
| RenderObject* newChild, RenderBoxModelObject* oldCont); |
| RenderBlock* clone() const; |
| RenderBlock* continuationBefore(RenderObject* beforeChild); |
| RenderBlock* containingColumnsBlock(bool allowAnonymousColumnBlock = true); |
| RenderBlock* columnsBlockForSpanningElement(RenderObject* newChild); |
| |
| RenderBoxModelObject& createReplacementRunIn(RenderBoxModelObject& runIn); |
| void moveRunInUnderSiblingBlockIfNeeded(RenderObject& runIn); |
| void moveRunInToOriginalPosition(RenderObject& runIn); |
| |
| private: |
| bool hasRareData() const; |
| |
| protected: |
| void dirtyForLayoutFromPercentageHeightDescendants(); |
| |
| void determineLogicalLeftPositionForChild(RenderBox& child, ApplyLayoutDeltaMode = DoNotApplyLayoutDelta); |
| |
| virtual ColumnInfo::PaginationUnit paginationUnit() const; |
| |
| protected: |
| // Adjust from painting offsets to the local coords of this renderer |
| void offsetForContents(LayoutPoint&) const; |
| |
| virtual bool requiresColumns(int desiredColumnCount) const; |
| |
| virtual bool updateLogicalWidthAndColumnWidth(); |
| |
| virtual bool canCollapseAnonymousBlockChild() const { return true; } |
| |
| public: |
| virtual LayoutUnit offsetFromLogicalTopOfFirstPage() const OVERRIDE; |
| RenderRegion* regionAtBlockOffset(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; |
| |
| mutable signed m_lineHeight : 25; |
| unsigned m_hasMarginBeforeQuirk : 1; // Note these quirk values can't be put in RenderBlockRareData since they are set too frequently. |
| unsigned m_hasMarginAfterQuirk : 1; |
| unsigned m_beingDestroyed : 1; |
| unsigned m_hasMarkupTruncation : 1; |
| unsigned m_hasBorderOrPaddingLogicalWidthChanged : 1; |
| enum LineLayoutPath { UndeterminedPath, SimpleLinesPath, LineBoxesPath, ForceLineBoxesPath }; |
| unsigned m_lineLayoutPath : 2; |
| |
| #if ENABLE(IOS_TEXT_AUTOSIZING) |
| int m_widthForTextAutosizing; |
| unsigned m_lineCountForTextAutosizing : 2; |
| #endif |
| |
| // 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; |
| }; |
| |
| template<> inline bool isRendererOfType<const RenderBlock>(const RenderObject& renderer) { return renderer.isRenderBlock(); } |
| RENDER_OBJECT_TYPE_CASTS(RenderBlock, isRenderBlock()) |
| |
| LayoutUnit blockDirectionOffset(RenderBlock& rootBlock, const LayoutSize& offsetFromRootBlock); |
| LayoutUnit inlineDirectionOffset(RenderBlock& rootBlock, const LayoutSize& offsetFromRootBlock); |
| VisiblePosition positionForPointRespectingEditingBoundaries(RenderBlock&, RenderBox&, const LayoutPoint&); |
| |
| } // namespace WebCore |
| |
| #endif // RenderBlock_h |
