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6ee8440f27
This is the first step of getting rid of RenderLayer. Instead of walking the RenderLayer tree, wall the RenderObject tree and add any layers encountered to a vector to paint later. This patch just consolidates and move the code from RenderLayer to RenderBox and then changes the children painting to iterate over the vector. Therefore we walk the RenderObject tree. We still call out to RenderLayer in a bunch of places. A followup patch will get rid of those. R=esprehn@chromium.org Review URL: https://codereview.chromium.org/899753003
374 lines
16 KiB
C++
374 lines
16 KiB
C++
/*
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* Copyright (C) 2003, 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef SKY_ENGINE_CORE_RENDERING_INLINEFLOWBOX_H_
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#define SKY_ENGINE_CORE_RENDERING_INLINEFLOWBOX_H_
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#include "sky/engine/core/rendering/InlineBox.h"
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#include "sky/engine/core/rendering/RenderObjectInlines.h"
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#include "sky/engine/core/rendering/RenderOverflow.h"
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#include "sky/engine/core/rendering/style/ShadowData.h"
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namespace blink {
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class HitTestRequest;
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class HitTestResult;
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class InlineTextBox;
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class RenderLineBoxList;
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class SimpleFontData;
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class VerticalPositionCache;
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struct GlyphOverflow;
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typedef HashMap<const InlineTextBox*, pair<Vector<const SimpleFontData*>, GlyphOverflow> > GlyphOverflowAndFallbackFontsMap;
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class InlineFlowBox : public InlineBox {
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public:
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InlineFlowBox(RenderObject& obj)
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: InlineBox(obj)
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, m_firstChild(0)
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, m_lastChild(0)
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, m_prevLineBox(0)
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, m_nextLineBox(0)
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, m_includeLogicalLeftEdge(false)
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, m_includeLogicalRightEdge(false)
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, m_descendantsHaveSameLineHeightAndBaseline(true)
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, m_baselineType(AlphabeticBaseline)
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, m_hasAnnotationsBefore(false)
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, m_hasAnnotationsAfter(false)
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, m_lineBreakBidiStatusEor(WTF::Unicode::LeftToRight)
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, m_lineBreakBidiStatusLastStrong(WTF::Unicode::LeftToRight)
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, m_lineBreakBidiStatusLast(WTF::Unicode::LeftToRight)
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#if ENABLE(ASSERT)
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, m_hasBadChildList(false)
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#endif
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{
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// Internet Explorer and Firefox always create a marker for list items, even when the list-style-type is none. We do not make a marker
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// in the list-style-type: none case, since it is wasteful to do so. However, in order to match other browsers we have to pretend like
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// an invisible marker exists. The side effect of having an invisible marker is that the quirks mode behavior of shrinking lines with no
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// text children must not apply. This change also means that gaps will exist between image bullet list items. Even when the list bullet
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// is an image, the line is still considered to be immune from the quirk.
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m_hasTextChildren = false;
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m_hasTextDescendants = m_hasTextChildren;
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}
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#if ENABLE(ASSERT)
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virtual ~InlineFlowBox();
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#endif
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#ifndef NDEBUG
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virtual void showLineTreeAndMark(const InlineBox* = 0, const char* = 0, const InlineBox* = 0, const char* = 0, const RenderObject* = 0, int = 0) const override;
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virtual const char* boxName() const override;
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#endif
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InlineFlowBox* prevLineBox() const { return m_prevLineBox; }
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InlineFlowBox* nextLineBox() const { return m_nextLineBox; }
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void setNextLineBox(InlineFlowBox* n) { m_nextLineBox = n; }
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void setPreviousLineBox(InlineFlowBox* p) { m_prevLineBox = p; }
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InlineBox* firstChild() const { checkConsistency(); return m_firstChild; }
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InlineBox* lastChild() const { checkConsistency(); return m_lastChild; }
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virtual bool isLeaf() const override final { return false; }
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InlineBox* firstLeafChild() const;
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InlineBox* lastLeafChild() const;
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typedef void (*CustomInlineBoxRangeReverse)(void* userData, Vector<InlineBox*>::iterator first, Vector<InlineBox*>::iterator last);
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void collectLeafBoxesInLogicalOrder(Vector<InlineBox*>&, CustomInlineBoxRangeReverse customReverseImplementation = 0, void* userData = 0) const;
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virtual void setConstructed() override final
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{
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InlineBox::setConstructed();
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for (InlineBox* child = firstChild(); child; child = child->nextOnLine())
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child->setConstructed();
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}
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void addToLine(InlineBox* child);
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virtual void deleteLine() override final;
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virtual void extractLine() override final;
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virtual void attachLine() override final;
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virtual void adjustPosition(float dx, float dy) override;
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virtual void extractLineBoxFromRenderObject();
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virtual void attachLineBoxToRenderObject();
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virtual void removeLineBoxFromRenderObject();
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virtual void clearTruncation() override;
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IntRect roundedFrameRect() const;
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virtual void paint(PaintInfo&, const LayoutPoint&, LayoutUnit lineTop, LayoutUnit lineBottom, Vector<RenderBox*>& layers) override;
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virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, LayoutUnit lineTop, LayoutUnit lineBottom) override;
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bool boxShadowCanBeAppliedToBackground(const FillLayer&) const;
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virtual RenderLineBoxList* rendererLineBoxes() const;
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// logicalLeft = left in a horizontal line and top in a vertical line.
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LayoutUnit marginBorderPaddingLogicalLeft() const { return marginLogicalLeft() + borderLogicalLeft() + paddingLogicalLeft(); }
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LayoutUnit marginBorderPaddingLogicalRight() const { return marginLogicalRight() + borderLogicalRight() + paddingLogicalRight(); }
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LayoutUnit marginLogicalLeft() const
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{
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if (!includeLogicalLeftEdge())
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return 0;
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return boxModelObject()->marginLeft();
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}
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LayoutUnit marginLogicalRight() const
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{
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if (!includeLogicalRightEdge())
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return 0;
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return boxModelObject()->marginRight();
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}
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int borderLogicalLeft() const
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{
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if (!includeLogicalLeftEdge())
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return 0;
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return renderer().style(isFirstLineStyle())->borderLeftWidth();
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}
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int borderLogicalRight() const
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{
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if (!includeLogicalRightEdge())
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return 0;
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return renderer().style(isFirstLineStyle())->borderRightWidth();
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}
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int paddingLogicalLeft() const
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{
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if (!includeLogicalLeftEdge())
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return 0;
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return boxModelObject()->paddingLeft();
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}
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int paddingLogicalRight() const
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{
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if (!includeLogicalRightEdge())
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return 0;
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return boxModelObject()->paddingRight();
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}
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bool includeLogicalLeftEdge() const { return m_includeLogicalLeftEdge; }
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bool includeLogicalRightEdge() const { return m_includeLogicalRightEdge; }
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void setEdges(bool includeLeft, bool includeRight)
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{
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m_includeLogicalLeftEdge = includeLeft;
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m_includeLogicalRightEdge = includeRight;
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}
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// Helper functions used during line construction and placement.
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void determineSpacingForFlowBoxes(bool lastLine, bool isLogicallyLastRunWrapped, RenderObject* logicallyLastRunRenderer);
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LayoutUnit getFlowSpacingLogicalWidth();
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float placeBoxesInInlineDirection(float logicalLeft, bool& needsWordSpacing);
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float placeBoxRangeInInlineDirection(InlineBox* firstChild, InlineBox* lastChild,
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float& logicalLeft, float& minLogicalLeft, float& maxLogicalRight, bool& needsWordSpacing);
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void beginPlacingBoxRangesInInlineDirection(float logicalLeft) { setLogicalLeft(logicalLeft); }
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void endPlacingBoxRangesInInlineDirection(float logicalLeft, float logicalRight, float minLogicalLeft, float maxLogicalRight)
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{
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setLogicalWidth(logicalRight - logicalLeft);
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if (knownToHaveNoOverflow() && (minLogicalLeft < logicalLeft || maxLogicalRight > logicalRight))
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clearKnownToHaveNoOverflow();
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}
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void computeLogicalBoxHeights(RootInlineBox*, LayoutUnit& maxPositionTop, LayoutUnit& maxPositionBottom,
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int& maxAscent, int& maxDescent, bool& setMaxAscent, bool& setMaxDescent,
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bool strictMode, GlyphOverflowAndFallbackFontsMap&, FontBaseline, VerticalPositionCache&);
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void adjustMaxAscentAndDescent(int& maxAscent, int& maxDescent,
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int maxPositionTop, int maxPositionBottom);
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void placeBoxesInBlockDirection(LayoutUnit logicalTop, LayoutUnit maxHeight, int maxAscent, bool strictMode, LayoutUnit& lineTop, LayoutUnit& lineBottom, LayoutUnit& selectionBottom, bool& setLineTop,
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LayoutUnit& lineTopIncludingMargins, LayoutUnit& lineBottomIncludingMargins, bool& hasAnnotationsBefore, bool& hasAnnotationsAfter, FontBaseline);
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void flipLinesInBlockDirection(LayoutUnit lineTop, LayoutUnit lineBottom);
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LayoutUnit computeOverAnnotationAdjustment(LayoutUnit allowedPosition) const;
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LayoutUnit computeUnderAnnotationAdjustment(LayoutUnit allowedPosition) const;
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void computeOverflow(LayoutUnit lineTop, LayoutUnit lineBottom, GlyphOverflowAndFallbackFontsMap&);
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void removeChild(InlineBox* child, MarkLineBoxes);
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virtual RenderObject::SelectionState selectionState() override;
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virtual bool canAccommodateEllipsis(bool ltr, int blockEdge, int ellipsisWidth) const override final;
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virtual float placeEllipsisBox(bool ltr, float blockLeftEdge, float blockRightEdge, float ellipsisWidth, float &truncatedWidth, bool&) override;
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bool hasTextChildren() const { return m_hasTextChildren; }
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bool hasTextDescendants() const { return m_hasTextDescendants; }
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void setHasTextChildren() { m_hasTextChildren = true; setHasTextDescendants(); }
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void setHasTextDescendants() { m_hasTextDescendants = true; }
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void checkConsistency() const;
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void setHasBadChildList();
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// Line visual and layout overflow are in the coordinate space of the block. This means that they aren't purely physical directions.
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// For horizontal-tb and vertical-lr they will match physical directions, but for horizontal-bt and vertical-rl, the top/bottom and left/right
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// respectively are flipped when compared to their physical counterparts. For example minX is on the left in vertical-lr, but it is on the right in vertical-rl.
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LayoutRect layoutOverflowRect(LayoutUnit lineTop, LayoutUnit lineBottom) const
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{
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return m_overflow ? m_overflow->layoutOverflowRect() : enclosingLayoutRect(frameRectIncludingLineHeight(lineTop, lineBottom));
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}
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LayoutUnit logicalLeftLayoutOverflow() const
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{
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return m_overflow ? m_overflow->layoutOverflowRect().x() : static_cast<LayoutUnit>(logicalLeft());
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}
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LayoutUnit logicalRightLayoutOverflow() const
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{
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return m_overflow ? m_overflow->layoutOverflowRect().maxX() : static_cast<LayoutUnit>(ceilf(logicalRight()));
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}
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LayoutUnit logicalTopLayoutOverflow(LayoutUnit lineTop) const
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{
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if (m_overflow)
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return m_overflow->layoutOverflowRect().y();
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return lineTop;
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}
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LayoutUnit logicalBottomLayoutOverflow(LayoutUnit lineBottom) const
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{
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if (m_overflow)
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return m_overflow->layoutOverflowRect().maxY();
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return lineBottom;
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}
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LayoutRect logicalLayoutOverflowRect(LayoutUnit lineTop, LayoutUnit lineBottom) const
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{
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// FIXME(sky): Remove
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return layoutOverflowRect(lineTop, lineBottom);
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}
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LayoutRect visualOverflowRect(LayoutUnit lineTop, LayoutUnit lineBottom) const
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{
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return m_overflow ? m_overflow->visualOverflowRect() : enclosingLayoutRect(frameRectIncludingLineHeight(lineTop, lineBottom));
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}
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LayoutUnit logicalLeftVisualOverflow() const { return m_overflow ? m_overflow->visualOverflowRect().x() : static_cast<LayoutUnit>(logicalLeft()); }
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LayoutUnit logicalRightVisualOverflow() const { return m_overflow ? m_overflow->visualOverflowRect().maxX() : static_cast<LayoutUnit>(ceilf(logicalRight())); }
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LayoutUnit logicalTopVisualOverflow(LayoutUnit lineTop) const
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{
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if (m_overflow)
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return m_overflow->visualOverflowRect().y();
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return lineTop;
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}
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LayoutUnit logicalBottomVisualOverflow(LayoutUnit lineBottom) const
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{
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if (m_overflow)
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return m_overflow->visualOverflowRect().maxY();
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return lineBottom;
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}
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LayoutRect logicalVisualOverflowRect(LayoutUnit lineTop, LayoutUnit lineBottom) const
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{
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return visualOverflowRect(lineTop, lineBottom);
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}
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void setOverflowFromLogicalRects(const LayoutRect& logicalLayoutOverflow, const LayoutRect& logicalVisualOverflow, LayoutUnit lineTop, LayoutUnit lineBottom);
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FloatRect frameRectIncludingLineHeight(LayoutUnit lineTop, LayoutUnit lineBottom) const
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{
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return FloatRect(m_topLeft.x(), lineTop.toFloat(), width(), (lineBottom - lineTop).toFloat());
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}
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FloatRect logicalFrameRectIncludingLineHeight(LayoutUnit lineTop, LayoutUnit lineBottom) const
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{
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return FloatRect(logicalLeft(), lineTop.toFloat(), logicalWidth(), (lineBottom - lineTop).toFloat());
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}
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bool descendantsHaveSameLineHeightAndBaseline() const { return m_descendantsHaveSameLineHeightAndBaseline; }
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void clearDescendantsHaveSameLineHeightAndBaseline()
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{
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m_descendantsHaveSameLineHeightAndBaseline = false;
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if (parent() && parent()->descendantsHaveSameLineHeightAndBaseline())
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parent()->clearDescendantsHaveSameLineHeightAndBaseline();
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}
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private:
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void paintBoxDecorationBackground(PaintInfo&, const LayoutPoint&);
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void paintFillLayers(const PaintInfo&, const Color&, const FillLayer&, const LayoutRect&);
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void paintFillLayer(const PaintInfo&, const Color&, const FillLayer&, const LayoutRect&);
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void paintBoxShadow(const PaintInfo&, RenderStyle*, ShadowStyle, const LayoutRect&);
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void addBoxShadowVisualOverflow(LayoutRect& logicalVisualOverflow);
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void addBorderOutsetVisualOverflow(LayoutRect& logicalVisualOverflow);
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void addOutlineVisualOverflow(LayoutRect& logicalVisualOverflow);
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void addTextBoxVisualOverflow(InlineTextBox*, GlyphOverflowAndFallbackFontsMap&, LayoutRect& logicalVisualOverflow);
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void addReplacedChildOverflow(const InlineBox*, LayoutRect& logicalLayoutOverflow, LayoutRect& logicalVisualOverflow);
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void setLayoutOverflow(const LayoutRect&, const LayoutRect&);
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void setVisualOverflow(const LayoutRect&, const LayoutRect&);
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protected:
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OwnPtr<RenderOverflow> m_overflow;
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virtual bool isInlineFlowBox() const override final { return true; }
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InlineBox* m_firstChild;
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InlineBox* m_lastChild;
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InlineFlowBox* m_prevLineBox; // The previous box that also uses our RenderObject
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InlineFlowBox* m_nextLineBox; // The next box that also uses our RenderObject
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// Maximum logicalTop among all children of an InlineFlowBox. Used to
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// calculate the offset for TextUnderlinePositionUnder.
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void computeMaxLogicalTop(float& maxLogicalTop) const;
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private:
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unsigned m_includeLogicalLeftEdge : 1;
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unsigned m_includeLogicalRightEdge : 1;
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unsigned m_hasTextChildren : 1;
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unsigned m_hasTextDescendants : 1;
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unsigned m_descendantsHaveSameLineHeightAndBaseline : 1;
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protected:
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// The following members are only used by RootInlineBox but moved here to keep the bits packed.
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// Whether or not this line uses alphabetic or ideographic baselines by default.
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unsigned m_baselineType : 1; // FontBaseline
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// If the line contains any ruby runs, then this will be true.
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unsigned m_hasAnnotationsBefore : 1;
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unsigned m_hasAnnotationsAfter : 1;
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unsigned m_lineBreakBidiStatusEor : 5; // WTF::Unicode::Direction
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unsigned m_lineBreakBidiStatusLastStrong : 5; // WTF::Unicode::Direction
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unsigned m_lineBreakBidiStatusLast : 5; // WTF::Unicode::Direction
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// End of RootInlineBox-specific members.
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#if ENABLE(ASSERT)
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private:
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unsigned m_hasBadChildList : 1;
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#endif
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};
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DEFINE_INLINE_BOX_TYPE_CASTS(InlineFlowBox);
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#if !ENABLE(ASSERT)
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inline void InlineFlowBox::checkConsistency() const
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{
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}
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#endif
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inline void InlineFlowBox::setHasBadChildList()
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{
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#if ENABLE(ASSERT)
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m_hasBadChildList = true;
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#endif
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}
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} // namespace blink
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#ifndef NDEBUG
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// Outside the WebCore namespace for ease of invocation from gdb.
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void showTree(const blink::InlineFlowBox*);
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#endif
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#endif // SKY_ENGINE_CORE_RENDERING_INLINEFLOWBOX_H_
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