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107 lines
4.1 KiB
C++
107 lines
4.1 KiB
C++
/*
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* Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "core/rendering/shapes/BoxShape.h"
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#include "wtf/MathExtras.h"
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namespace blink {
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LayoutRect BoxShape::shapeMarginLogicalBoundingBox() const
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{
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FloatRect marginBounds(m_bounds.rect());
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if (shapeMargin() > 0)
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marginBounds.inflate(shapeMargin());
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return static_cast<LayoutRect>(marginBounds);
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}
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FloatRoundedRect BoxShape::shapeMarginBounds() const
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{
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FloatRoundedRect marginBounds(m_bounds);
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if (shapeMargin() > 0) {
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marginBounds.inflate(shapeMargin());
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marginBounds.expandRadii(shapeMargin());
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}
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return marginBounds;
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}
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LineSegment BoxShape::getExcludedInterval(LayoutUnit logicalTop, LayoutUnit logicalHeight) const
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{
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const FloatRoundedRect& marginBounds = shapeMarginBounds();
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if (marginBounds.isEmpty() || !lineOverlapsShapeMarginBounds(logicalTop, logicalHeight))
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return LineSegment();
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float y1 = logicalTop.toFloat();
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float y2 = (logicalTop + logicalHeight).toFloat();
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const FloatRect& rect = marginBounds.rect();
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if (!marginBounds.isRounded())
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return LineSegment(marginBounds.rect().x(), marginBounds.rect().maxX());
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float topCornerMaxY = std::max<float>(marginBounds.topLeftCorner().maxY(), marginBounds.topRightCorner().maxY());
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float bottomCornerMinY = std::min<float>(marginBounds.bottomLeftCorner().y(), marginBounds.bottomRightCorner().y());
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if (topCornerMaxY <= bottomCornerMinY && y1 <= topCornerMaxY && y2 >= bottomCornerMinY)
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return LineSegment(rect.x(), rect.maxX());
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float x1 = rect.maxX();
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float x2 = rect.x();
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float minXIntercept;
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float maxXIntercept;
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if (y1 <= marginBounds.topLeftCorner().maxY() && y2 >= marginBounds.bottomLeftCorner().y())
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x1 = rect.x();
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if (y1 <= marginBounds.topRightCorner().maxY() && y2 >= marginBounds.bottomRightCorner().y())
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x2 = rect.maxX();
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if (marginBounds.xInterceptsAtY(y1, minXIntercept, maxXIntercept)) {
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x1 = std::min<float>(x1, minXIntercept);
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x2 = std::max<float>(x2, maxXIntercept);
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}
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if (marginBounds.xInterceptsAtY(y2, minXIntercept, maxXIntercept)) {
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x1 = std::min<float>(x1, minXIntercept);
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x2 = std::max<float>(x2, maxXIntercept);
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}
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ASSERT(x2 >= x1);
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return LineSegment(x1, x2);
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}
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void BoxShape::buildDisplayPaths(DisplayPaths& paths) const
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{
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paths.shape.addRoundedRect(m_bounds.rect(), m_bounds.radii().topLeft(), m_bounds.radii().topRight(), m_bounds.radii().bottomLeft(), m_bounds.radii().bottomRight());
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if (shapeMargin())
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paths.marginShape.addRoundedRect(shapeMarginBounds().rect(), shapeMarginBounds().radii().topLeft(), shapeMarginBounds().radii().topRight(), shapeMarginBounds().radii().bottomLeft(), shapeMarginBounds().radii().bottomRight());
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}
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} // namespace blink
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