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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.
*/
#include "config.h"
#include "ShapeInsideInfo.h"
#if ENABLE(CSS_SHAPES)
#include "InlineIterator.h"
#include "RenderBlock.h"
namespace WebCore {
LineSegmentRange::LineSegmentRange(const InlineIterator& start, const InlineIterator& end)
: start(start.root(), start.renderer(), start.offset())
, end(end.root(), end.renderer(), end.offset())
{
}
bool ShapeInsideInfo::isEnabledFor(const RenderBlock& renderer)
{
ShapeValue* shapeValue = renderer.style().resolvedShapeInside();
if (!shapeValue)
return false;
switch (shapeValue->type()) {
case ShapeValue::Shape:
return shapeValue->shape() && shapeValue->shape()->type() != BasicShape::BasicShapeInsetRectangleType && shapeValue->shape()->type() != BasicShape::BasicShapeInsetType;
case ShapeValue::Image:
return shapeValue->isImageValid() && checkShapeImageOrigin(renderer.document(), *(shapeValue->image()->cachedImage()));
case ShapeValue::Box:
return true;
case ShapeValue::Outside:
// Outside value must already be resolved
break;
}
ASSERT_NOT_REACHED();
return false;
}
bool ShapeInsideInfo::updateSegmentsForLine(LayoutSize lineOffset, LayoutUnit lineHeight)
{
m_segmentRanges.clear();
bool result = updateSegmentsForLine(lineOffset.height(), lineHeight);
for (size_t i = 0; i < m_segments.size(); i++) {
m_segments[i].logicalLeft -= lineOffset.width();
m_segments[i].logicalRight -= lineOffset.width();
}
return result;
}
bool ShapeInsideInfo::updateSegmentsForLine(LayoutUnit lineTop, LayoutUnit lineHeight)
{
ASSERT(lineHeight >= 0);
m_shapeLineTop = lineTop - logicalTopOffset();
m_lineHeight = lineHeight;
m_segments.clear();
m_segmentRanges.clear();
if (lineOverlapsShapeBounds())
m_segments = computeSegmentsForLine(lineTop, lineHeight);
return m_segments.size();
}
bool ShapeInsideInfo::adjustLogicalLineTop(float minSegmentWidth)
{
const Shape& shape = computedShape();
if (m_lineHeight <= 0 || logicalLineTop() > shapeLogicalBottom())
return false;
LayoutUnit newLineTop;
if (shape.firstIncludedIntervalLogicalTop(m_shapeLineTop, FloatSize(minSegmentWidth, m_lineHeight), newLineTop)) {
if (newLineTop > m_shapeLineTop) {
m_shapeLineTop = newLineTop;
return true;
}
}
return false;
}
ShapeValue* ShapeInsideInfo::shapeValue() const
{
return m_renderer.style().resolvedShapeInside();
}
LayoutUnit ShapeInsideInfo::computeFirstFitPositionForFloat(const FloatSize floatSize) const
{
if (!floatSize.width() || shapeLogicalBottom() < logicalLineTop())
return 0;
LayoutUnit firstFitPosition = 0;
if (computedShape().firstIncludedIntervalLogicalTop(m_shapeLineTop, floatSize, firstFitPosition) && (m_shapeLineTop <= firstFitPosition))
return firstFitPosition;
return 0;
}
}
#endif
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