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/*
* Copyright (C) 2013 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 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 HOLDER 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.
*/
#include "config.h"
#include "core/rendering/shapes/BoxShape.h"
#include "wtf/MathExtras.h"
namespace WebCore {
LayoutRect BoxShape::shapeMarginLogicalBoundingBox() const
{
FloatRect marginBounds(m_bounds.rect());
if (shapeMargin() > 0)
marginBounds.inflate(shapeMargin());
return static_cast<LayoutRect>(marginBounds);
}
FloatRoundedRect BoxShape::shapeMarginBounds() const
{
FloatRoundedRect marginBounds(m_bounds);
if (shapeMargin() > 0) {
marginBounds.inflate(shapeMargin());
marginBounds.expandRadii(shapeMargin());
}
return marginBounds;
}
void BoxShape::getExcludedIntervals(LayoutUnit logicalTop, LayoutUnit logicalHeight, SegmentList& result) const
{
const FloatRoundedRect& marginBounds = shapeMarginBounds();
if (marginBounds.isEmpty() || !lineOverlapsShapeMarginBounds(logicalTop, logicalHeight))
return;
float y1 = logicalTop.toFloat();
float y2 = (logicalTop + logicalHeight).toFloat();
const FloatRect& rect = marginBounds.rect();
if (!marginBounds.isRounded()) {
result.append(LineSegment(marginBounds.rect().x(), marginBounds.rect().maxX()));
return;
}
float topCornerMaxY = std::max<float>(marginBounds.topLeftCorner().maxY(), marginBounds.topRightCorner().maxY());
float bottomCornerMinY = std::min<float>(marginBounds.bottomLeftCorner().y(), marginBounds.bottomRightCorner().y());
if (topCornerMaxY <= bottomCornerMinY && y1 <= topCornerMaxY && y2 >= bottomCornerMinY) {
result.append(LineSegment(rect.x(), rect.maxX()));
return;
}
float x1 = rect.maxX();
float x2 = rect.x();
float minXIntercept;
float maxXIntercept;
if (y1 <= marginBounds.topLeftCorner().maxY() && y2 >= marginBounds.bottomLeftCorner().y())
x1 = rect.x();
if (y1 <= marginBounds.topRightCorner().maxY() && y2 >= marginBounds.bottomRightCorner().y())
x2 = rect.maxX();
if (marginBounds.xInterceptsAtY(y1, minXIntercept, maxXIntercept)) {
x1 = std::min<float>(x1, minXIntercept);
x2 = std::max<float>(x2, maxXIntercept);
}
if (marginBounds.xInterceptsAtY(y2, minXIntercept, maxXIntercept)) {
x1 = std::min<float>(x1, minXIntercept);
x2 = std::max<float>(x2, maxXIntercept);
}
ASSERT(x2 >= x1);
result.append(LineSegment(x1, x2));
}
void BoxShape::buildDisplayPaths(DisplayPaths& paths) const
{
paths.shape.addRoundedRect(m_bounds.rect(), m_bounds.radii().topLeft(), m_bounds.radii().topRight(), m_bounds.radii().bottomLeft(), m_bounds.radii().bottomRight());
if (shapeMargin())
paths.marginShape.addRoundedRect(shapeMarginBounds().rect(), shapeMarginBounds().radii().topLeft(), shapeMarginBounds().radii().topRight(), shapeMarginBounds().radii().bottomLeft(), shapeMarginBounds().radii().bottomRight());
}
} // namespace WebCore
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