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/*
* Copyright (C) 2003, 2006, 2007, 2008 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 RootInlineBox_h
#define RootInlineBox_h
#include "core/rendering/FloatToLayoutUnit.h"
#include "core/rendering/InlineFlowBox.h"
#include "platform/text/BidiContext.h"
namespace blink {
class EllipsisBox;
class HitTestResult;
class RenderBlockFlow;
struct BidiStatus;
struct GapRects;
class RootInlineBox : public InlineFlowBox {
public:
explicit RootInlineBox(RenderBlockFlow&);
virtual void destroy() override final;
virtual bool isRootInlineBox() const override final { return true; }
void detachEllipsisBox();
RootInlineBox* nextRootBox() const { return static_cast<RootInlineBox*>(m_nextLineBox); }
RootInlineBox* prevRootBox() const { return static_cast<RootInlineBox*>(m_prevLineBox); }
virtual void adjustPosition(FloatWillBeLayoutUnit dx, FloatWillBeLayoutUnit dy) override final;
LayoutUnit lineTop() const { return m_lineTop; }
LayoutUnit lineBottom() const { return m_lineBottom; }
LayoutUnit lineTopWithLeading() const { return m_lineTopWithLeading; }
LayoutUnit lineBottomWithLeading() const { return m_lineBottomWithLeading; }
LayoutUnit paginationStrut() const { return m_paginationStrut; }
void setPaginationStrut(LayoutUnit strut) { m_paginationStrut = strut; }
LayoutUnit selectionTop() const;
LayoutUnit selectionBottom() const;
LayoutUnit selectionHeight() const { return max<LayoutUnit>(0, selectionBottom() - selectionTop()); }
LayoutUnit selectionTopAdjustedForPrecedingBlock() const;
LayoutUnit selectionHeightAdjustedForPrecedingBlock() const { return max<LayoutUnit>(0, selectionBottom() - selectionTopAdjustedForPrecedingBlock()); }
int blockDirectionPointInLine() const;
LayoutUnit alignBoxesInBlockDirection(LayoutUnit heightOfBlock, GlyphOverflowAndFallbackFontsMap&, VerticalPositionCache&);
void setLineTopBottomPositions(LayoutUnit top, LayoutUnit bottom, LayoutUnit topWithLeading, LayoutUnit bottomWithLeading, LayoutUnit selectionBottom = LayoutUnit::min())
{
m_lineTop = top;
m_lineBottom = bottom;
m_lineTopWithLeading = topWithLeading;
m_lineBottomWithLeading = bottomWithLeading;
m_selectionBottom = selectionBottom == LayoutUnit::min() ? bottom : selectionBottom;
}
virtual RenderLineBoxList* rendererLineBoxes() const override final;
RenderObject* lineBreakObj() const { return m_lineBreakObj; }
BidiStatus lineBreakBidiStatus() const;
void setLineBreakInfo(RenderObject*, unsigned breakPos, const BidiStatus&);
unsigned lineBreakPos() const { return m_lineBreakPos; }
void setLineBreakPos(unsigned p) { m_lineBreakPos = p; }
using InlineBox::endsWithBreak;
using InlineBox::setEndsWithBreak;
void childRemoved(InlineBox* box);
bool lineCanAccommodateEllipsis(bool ltr, int blockEdge, int lineBoxEdge, int ellipsisWidth);
// Return the truncatedWidth, the width of the truncated text + ellipsis.
FloatWillBeLayoutUnit placeEllipsis(const AtomicString& ellipsisStr, bool ltr, FloatWillBeLayoutUnit blockLeftEdge, FloatWillBeLayoutUnit blockRightEdge, FloatWillBeLayoutUnit ellipsisWidth, InlineBox* markupBox = 0);
// Return the position of the EllipsisBox or -1.
virtual FloatWillBeLayoutUnit placeEllipsisBox(bool ltr, FloatWillBeLayoutUnit blockLeftEdge, FloatWillBeLayoutUnit blockRightEdge, FloatWillBeLayoutUnit ellipsisWidth, FloatWillBeLayoutUnit &truncatedWidth, bool& foundBox) override final;
using InlineBox::hasEllipsisBox;
EllipsisBox* ellipsisBox() const;
virtual void clearTruncation() override final;
virtual int baselinePosition(FontBaseline baselineType) const override final;
virtual LayoutUnit lineHeight() const override final;
virtual void paint(const PaintInfo&, const LayoutPoint&, LayoutUnit lineTop, LayoutUnit lineBottom) override;
virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, LayoutUnit lineTop, LayoutUnit lineBottom) override final;
using InlineBox::hasSelectedChildren;
using InlineBox::setHasSelectedChildren;
virtual RenderObject::SelectionState selectionState() const override final;
InlineBox* firstSelectedBox() const;
InlineBox* lastSelectedBox() const;
GapRects lineSelectionGap(const RenderBlock* rootBlock, const LayoutPoint& rootBlockPhysicalPosition, const LayoutSize& offsetFromRootBlock, LayoutUnit selTop, LayoutUnit selHeight, const PaintInfo*) const;
RenderBlockFlow& block() const;
InlineBox* closestLeafChildForPoint(const IntPoint&, bool onlyEditableLeaves);
InlineBox* closestLeafChildForLogicalLeftPosition(int, bool onlyEditableLeaves = false);
void appendFloat(RenderBox* floatingBox)
{
ASSERT(!isDirty());
if (m_floats)
m_floats->append(floatingBox);
else
m_floats= adoptPtr(new Vector<RenderBox*>(1, floatingBox));
}
Vector<RenderBox*>* floatsPtr() { ASSERT(!isDirty()); return m_floats.get(); }
virtual void extractLineBoxFromRenderObject() override final;
virtual void attachLineBoxToRenderObject() override final;
virtual void removeLineBoxFromRenderObject() override final;
FontBaseline baselineType() const { return static_cast<FontBaseline>(m_baselineType); }
bool hasAnnotationsBefore() const { return m_hasAnnotationsBefore; }
bool hasAnnotationsAfter() const { return m_hasAnnotationsAfter; }
LayoutRect paddedLayoutOverflowRect(LayoutUnit endPadding) const;
void ascentAndDescentForBox(InlineBox*, GlyphOverflowAndFallbackFontsMap&, int& ascent, int& descent, bool& affectsAscent, bool& affectsDescent) const;
LayoutUnit verticalPositionForBox(InlineBox*, VerticalPositionCache&);
bool includeLeadingForBox(InlineBox*) const;
bool includeFontForBox(InlineBox*) const;
bool includeGlyphsForBox(InlineBox*) const;
bool includeMarginForBox(InlineBox*) const;
bool fitsToGlyphs() const;
bool includesRootLineBoxFontOrLeading() const;
LayoutUnit logicalTopVisualOverflow() const
{
return InlineFlowBox::logicalTopVisualOverflow(lineTop());
}
LayoutUnit logicalBottomVisualOverflow() const
{
return InlineFlowBox::logicalBottomVisualOverflow(lineBottom());
}
LayoutUnit logicalTopLayoutOverflow() const
{
return InlineFlowBox::logicalTopLayoutOverflow(lineTop());
}
LayoutUnit logicalBottomLayoutOverflow() const
{
return InlineFlowBox::logicalBottomLayoutOverflow(lineBottom());
}
// Used to calculate the underline offset for TextUnderlinePositionUnder.
FloatWillBeLayoutUnit maxLogicalTop() const;
Node* getLogicalStartBoxWithNode(InlineBox*&) const;
Node* getLogicalEndBoxWithNode(InlineBox*&) const;
#ifndef NDEBUG
virtual const char* boxName() const override;
#endif
private:
LayoutUnit beforeAnnotationsAdjustment() const;
// This folds into the padding at the end of InlineFlowBox on 64-bit.
unsigned m_lineBreakPos;
// Where this line ended. The exact object and the position within that object are stored so that
// we can create an InlineIterator beginning just after the end of this line.
RenderObject* m_lineBreakObj;
RefPtr<BidiContext> m_lineBreakContext;
// Floats hanging off the line are pushed into this vector during layout. It is only
// good for as long as the line has not been marked dirty.
OwnPtr<Vector<RenderBox*> > m_floats;
LayoutUnit m_lineTop;
LayoutUnit m_lineBottom;
LayoutUnit m_lineTopWithLeading;
LayoutUnit m_lineBottomWithLeading;
LayoutUnit m_selectionBottom;
LayoutUnit m_paginationStrut;
};
} // namespace blink
#endif // RootInlineBox_h
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