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/*
* Copyright (C) 2011 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef RenderFlexibleBox_h
#define RenderFlexibleBox_h
#include "RenderBlock.h"
namespace WebCore {
class RenderFlexibleBox : public RenderBlock {
public:
RenderFlexibleBox(Node*);
virtual ~RenderFlexibleBox();
virtual const char* renderName() const;
virtual bool isFlexibleBox() const { return true; }
virtual void computePreferredLogicalWidths();
virtual void layoutBlock(bool relayoutChildren, LayoutUnit pageLogicalHeight = 0);
bool isHorizontalFlow() const;
private:
enum FlexSign {
PositiveFlexibility,
NegativeFlexibility,
};
struct FlexOrderHashTraits;
typedef HashSet<int, DefaultHash<int>::Hash, FlexOrderHashTraits> FlexOrderHashSet;
class FlexOrderIterator;
typedef WTF::HashMap<const RenderBox*, LayoutUnit> InflexibleFlexItemSize;
typedef WTF::Vector<RenderBox*> OrderedFlexItemList;
struct LineContext;
struct Violation;
bool hasOrthogonalFlow(RenderBox* child) const;
bool isColumnFlow() const;
bool isLeftToRightFlow() const;
bool isMultiline() const;
Length crossAxisLength() const;
Length preferredLengthForChild(RenderBox* child) const;
void setCrossAxisExtent(LayoutUnit);
LayoutUnit crossAxisExtentForChild(RenderBox* child);
LayoutUnit mainAxisExtentForChild(RenderBox* child);
LayoutUnit crossAxisExtent() const;
LayoutUnit mainAxisExtent() const;
LayoutUnit crossAxisContentExtent() const;
LayoutUnit mainAxisContentExtent() const;
WritingMode transformedWritingMode() const;
LayoutUnit flowAwareBorderStart() const;
LayoutUnit flowAwareBorderEnd() const;
LayoutUnit flowAwareBorderBefore() const;
LayoutUnit flowAwareBorderAfter() const;
LayoutUnit flowAwarePaddingStart() const;
LayoutUnit flowAwarePaddingEnd() const;
LayoutUnit flowAwarePaddingBefore() const;
LayoutUnit flowAwarePaddingAfter() const;
LayoutUnit flowAwareMarginStartForChild(RenderBox* child) const;
LayoutUnit flowAwareMarginEndForChild(RenderBox* child) const;
LayoutUnit flowAwareMarginBeforeForChild(RenderBox* child) const;
LayoutUnit flowAwareMarginAfterForChild(RenderBox* child) const;
LayoutUnit crossAxisMarginExtentForChild(RenderBox* child) const;
LayoutUnit crossAxisScrollbarExtent() const;
LayoutPoint flowAwareLocationForChild(RenderBox* child) const;
// FIXME: Supporting layout deltas.
void setFlowAwareLocationForChild(RenderBox* child, const LayoutPoint&);
void adjustAlignmentForChild(RenderBox* child, LayoutUnit);
LayoutUnit mainAxisBorderAndPaddingExtentForChild(RenderBox* child) const;
LayoutUnit mainAxisScrollbarExtentForChild(RenderBox* child) const;
LayoutUnit preferredMainAxisContentExtentForChild(RenderBox* child) const;
void layoutFlexItems(FlexOrderIterator&, WTF::Vector<LineContext>&);
LayoutUnit autoMarginOffsetInMainAxis(const OrderedFlexItemList&, LayoutUnit& availableFreeSpace);
void updateAutoMarginsInMainAxis(RenderBox* child, LayoutUnit autoMarginOffset);
bool hasAutoMarginsInCrossAxis(RenderBox* child);
bool updateAutoMarginsInCrossAxis(RenderBox* child, LayoutUnit availableAlignmentSpace);
void repositionLogicalHeightDependentFlexItems(FlexOrderIterator&, WTF::Vector<LineContext>&, LayoutUnit& oldClientAfterEdge);
LayoutUnit availableAlignmentSpaceForChild(LayoutUnit lineCrossAxisExtent, RenderBox*);
LayoutUnit marginBoxAscentForChild(RenderBox*);
void computeMainAxisPreferredSizes(bool relayoutChildren, FlexOrderHashSet&);
LayoutUnit lineBreakLength();
LayoutUnit adjustChildSizeForMinAndMax(RenderBox*, LayoutUnit childSize, LayoutUnit flexboxAvailableContentExtent);
bool computeNextFlexLine(FlexOrderIterator&, OrderedFlexItemList& orderedChildren, LayoutUnit& preferredMainAxisExtent, float& totalPositiveFlexibility, float& totalWeightedNegativeFlexibility, LayoutUnit& minMaxAppliedMainAxisExtent);
LayoutUnit computeAvailableFreeSpace(LayoutUnit preferredMainAxisExtent);
bool resolveFlexibleLengths(FlexSign, const OrderedFlexItemList&, LayoutUnit& availableFreeSpace, float& totalPositiveFlexibility, float& totalWeightedNegativeFlexibility, InflexibleFlexItemSize&, WTF::Vector<LayoutUnit>& childSizes);
void freezeViolations(const WTF::Vector<Violation>&, LayoutUnit& availableFreeSpace, float& totalPositiveFlexibility, float& totalWeightedNegativeFlexibility, InflexibleFlexItemSize&);
void setLogicalOverrideSize(RenderBox* child, LayoutUnit childPreferredSize);
void prepareChildForPositionedLayout(RenderBox* child, LayoutUnit mainAxisOffset, LayoutUnit crossAxisOffset);
void layoutAndPlaceChildren(LayoutUnit& crossAxisOffset, const OrderedFlexItemList&, const WTF::Vector<LayoutUnit>& childSizes, LayoutUnit availableFreeSpace, WTF::Vector<LineContext>&);
void layoutColumnReverse(const OrderedFlexItemList&, const WTF::Vector<LayoutUnit>& childSizes, LayoutUnit crossAxisOffset, LayoutUnit availableFreeSpace);
void packFlexLines(FlexOrderIterator&, WTF::Vector<LineContext>&);
void alignChildren(FlexOrderIterator&, const WTF::Vector<LineContext>&);
void applyStretchAlignmentToChild(RenderBox*, LayoutUnit lineCrossAxisExtent);
void flipForRightToLeftColumn(FlexOrderIterator&);
void flipForWrapReverse(FlexOrderIterator&, const WTF::Vector<LineContext>&, LayoutUnit crossAxisStartEdge);
};
} // namespace WebCore
#endif // RenderFlexibleBox_h
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