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/*
* Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER "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 HOLDER 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 ShapeInfo_h
#define ShapeInfo_h
#if ENABLE(CSS_SHAPES)
#include "FloatRect.h"
#include "LayoutUnit.h"
#include "RenderStyle.h"
#include "Shape.h"
#include "ShapeValue.h"
#include <wtf/OwnPtr.h>
#include <wtf/Vector.h>
namespace WebCore {
template<class KeyType, class InfoType>
class MappedInfo {
public:
static InfoType& ensureInfo(const KeyType& key)
{
InfoMap& infoMap = MappedInfo<KeyType, InfoType>::infoMap();
if (InfoType* info = infoMap.get(&key))
return *info;
typename InfoMap::AddResult result = infoMap.add(&key, std::make_unique<InfoType>(key));
return *result.iterator->value;
}
static void removeInfo(const KeyType& key) { infoMap().remove(&key); }
static InfoType* info(const KeyType& key) { return infoMap().get(&key); }
private:
typedef HashMap<const KeyType*, std::unique_ptr<InfoType>> InfoMap;
static InfoMap& infoMap()
{
DEFINE_STATIC_LOCAL(InfoMap, staticInfoMap, ());
return staticInfoMap;
}
};
template<class RenderType>
class ShapeInfo {
WTF_MAKE_FAST_ALLOCATED;
public:
virtual ~ShapeInfo() { }
void setShapeSize(LayoutUnit logicalWidth, LayoutUnit logicalHeight)
{
LayoutBox box = resolvedLayoutBox();
switch (box) {
case MarginBox:
logicalHeight += m_renderer.marginLogicalHeight();
logicalWidth += m_renderer.marginLogicalWidth();
break;
case BorderBox:
break;
case PaddingBox:
logicalHeight -= m_renderer.borderLogicalHeight();
logicalWidth -= m_renderer.borderLogicalWidth();
break;
case ContentBox:
logicalHeight -= m_renderer.borderAndPaddingLogicalHeight();
logicalWidth -= m_renderer.borderAndPaddingLogicalWidth();
break;
case BoundingBox:
case BoxMissing:
ASSERT_NOT_REACHED();
break;
}
LayoutSize newLogicalSize(logicalWidth, logicalHeight);
if (m_shapeLogicalSize == newLogicalSize)
return;
dirtyShapeSize();
m_shapeLogicalSize = newLogicalSize;
}
SegmentList computeSegmentsForLine(LayoutUnit lineTop, LayoutUnit lineHeight) const;
LayoutUnit shapeLogicalTop() const { return computedShapeLogicalBoundingBox().y() + logicalTopOffset(); }
LayoutUnit shapeLogicalBottom() const { return computedShapeLogicalBoundingBox().maxY() + logicalTopOffset(); }
LayoutUnit shapeLogicalLeft() const { return computedShapeLogicalBoundingBox().x() + logicalLeftOffset(); }
LayoutUnit shapeLogicalRight() const { return computedShapeLogicalBoundingBox().maxX() + logicalLeftOffset(); }
LayoutUnit shapeLogicalWidth() const { return computedShapeLogicalBoundingBox().width(); }
LayoutUnit shapeLogicalHeight() const { return computedShapeLogicalBoundingBox().height(); }
LayoutUnit logicalLineTop() const { return m_shapeLineTop + logicalTopOffset(); }
LayoutUnit logicalLineBottom() const { return m_shapeLineTop + m_lineHeight + logicalTopOffset(); }
LayoutUnit logicalLineBottom(LayoutUnit lineHeight) const { return m_shapeLineTop + lineHeight + logicalTopOffset(); }
LayoutUnit shapeContainingBlockLogicalHeight() const { return (m_renderer.style().boxSizing() == CONTENT_BOX) ? (m_shapeLogicalSize.height() + m_renderer.borderAndPaddingLogicalHeight()) : m_shapeLogicalSize.height(); }
virtual bool lineOverlapsShapeBounds() const = 0;
void dirtyShapeSize() { m_shape.clear(); }
bool shapeSizeDirty() { return !m_shape.get(); }
const RenderType& owner() const { return m_renderer; }
LayoutSize shapeSize() const { return m_shapeLogicalSize; }
LayoutRect computedShapePhysicalBoundingBox() const
{
LayoutRect physicalBoundingBox = computedShapeLogicalBoundingBox();
physicalBoundingBox.setX(physicalBoundingBox.x() + logicalLeftOffset());
physicalBoundingBox.setY(physicalBoundingBox.y() + logicalTopOffset());
if (m_renderer.style().isFlippedBlocksWritingMode())
physicalBoundingBox.setY(m_renderer.logicalHeight() - physicalBoundingBox.maxY());
if (!m_renderer.style().isHorizontalWritingMode())
physicalBoundingBox = physicalBoundingBox.transposedRect();
return physicalBoundingBox;
}
FloatPoint shapeToRendererPoint(FloatPoint point) const
{
FloatPoint result = FloatPoint(point.x() + logicalLeftOffset(), point.y() + logicalTopOffset());
if (m_renderer.style().isFlippedBlocksWritingMode())
result.setY(m_renderer.logicalHeight() - result.y());
if (!m_renderer.style().isHorizontalWritingMode())
result = result.transposedPoint();
return result;
}
FloatSize shapeToRendererSize(FloatSize size) const
{
if (!m_renderer.style().isHorizontalWritingMode())
return size.transposedSize();
return size;
}
const Shape& computedShape() const;
protected:
explicit ShapeInfo(const RenderType& renderer)
: m_renderer(renderer)
{
}
virtual LayoutBox resolvedLayoutBox() const = 0;
virtual LayoutRect computedShapeLogicalBoundingBox() const = 0;
virtual ShapeValue* shapeValue() const = 0;
virtual void getIntervals(LayoutUnit, LayoutUnit, SegmentList&) const = 0;
virtual WritingMode writingMode() const { return m_renderer.style().writingMode(); }
LayoutUnit logicalTopOffset() const
{
LayoutBox box = resolvedLayoutBox();
switch (box) {
case MarginBox: return -m_renderer.marginBefore();
case BorderBox: return LayoutUnit();
case PaddingBox: return m_renderer.borderBefore();
case ContentBox: return m_renderer.borderAndPaddingBefore();
case BoundingBox: break;
case BoxMissing: break;
}
ASSERT_NOT_REACHED();
return LayoutUnit();
}
LayoutUnit logicalLeftOffset() const
{
if (m_renderer.isRenderRegion())
return LayoutUnit();
LayoutBox box = resolvedLayoutBox();
switch (box) {
case MarginBox: return -m_renderer.marginStart();
case BorderBox: return LayoutUnit();
case PaddingBox: return m_renderer.borderStart();
case ContentBox: return m_renderer.borderAndPaddingStart();
case BoundingBox: break;
case BoxMissing: break;
}
ASSERT_NOT_REACHED();
return LayoutUnit();
}
LayoutUnit m_shapeLineTop;
LayoutUnit m_lineHeight;
const RenderType& m_renderer;
private:
mutable OwnPtr<Shape> m_shape;
LayoutSize m_shapeLogicalSize;
};
bool checkShapeImageOrigin(Document&, CachedImage&);
}
#endif
#endif
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