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/*
* Copyright (C) 2013 The MathJax Consortium. 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
* 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.
*/
#include "config.h"
#include "RenderMathMLSpace.h"
#if ENABLE(MATHML)
#include "GraphicsContext.h"
namespace WebCore {
RenderMathMLSpace::RenderMathMLSpace(MathMLSpaceElement& element, RenderStyle&& style)
: RenderMathMLBlock(element, WTFMove(style))
{
}
void RenderMathMLSpace::computePreferredLogicalWidths()
{
ASSERT(preferredLogicalWidthsDirty());
m_minPreferredLogicalWidth = m_maxPreferredLogicalWidth = spaceWidth();
setPreferredLogicalWidthsDirty(false);
}
LayoutUnit RenderMathMLSpace::spaceWidth() const
{
auto& spaceElement = element();
// FIXME: Negative width values are not supported yet.
return std::max<LayoutUnit>(0, toUserUnits(spaceElement.width(), style(), 0));
}
void RenderMathMLSpace::getSpaceHeightAndDepth(LayoutUnit& height, LayoutUnit& depth) const
{
auto& spaceElement = element();
height = toUserUnits(spaceElement.height(), style(), 0);
depth = toUserUnits(spaceElement.depth(), style(), 0);
// If the total height is negative, set vertical dimensions to 0.
if (height + depth < 0) {
height = 0;
depth = 0;
}
}
void RenderMathMLSpace::layoutBlock(bool relayoutChildren, LayoutUnit)
{
ASSERT(needsLayout());
if (!relayoutChildren && simplifiedLayout())
return;
setLogicalWidth(spaceWidth());
LayoutUnit height, depth;
getSpaceHeightAndDepth(height, depth);
setLogicalHeight(height + depth);
clearNeedsLayout();
}
std::optional<int> RenderMathMLSpace::firstLineBaseline() const
{
LayoutUnit height, depth;
getSpaceHeightAndDepth(height, depth);
return std::optional<int>(height);
}
}
#endif
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