99 lines
3.1 KiB
C++
99 lines
3.1 KiB
C++
/*
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* Copyright (C) 2013 The MathJax Consortium. 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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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials 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 FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "RenderMathMLSpace.h"
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#if ENABLE(MATHML)
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#include "GraphicsContext.h"
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#include <wtf/IsoMallocInlines.h>
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namespace WebCore {
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WTF_MAKE_ISO_ALLOCATED_IMPL(RenderMathMLSpace);
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RenderMathMLSpace::RenderMathMLSpace(MathMLSpaceElement& element, RenderStyle&& style)
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: RenderMathMLBlock(element, WTFMove(style))
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{
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}
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void RenderMathMLSpace::computePreferredLogicalWidths()
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{
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ASSERT(preferredLogicalWidthsDirty());
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m_minPreferredLogicalWidth = m_maxPreferredLogicalWidth = spaceWidth();
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setPreferredLogicalWidthsDirty(false);
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}
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LayoutUnit RenderMathMLSpace::spaceWidth() const
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{
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auto& spaceElement = element();
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// FIXME: Negative width values are not supported yet.
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return std::max<LayoutUnit>(0, toUserUnits(spaceElement.width(), style(), 0));
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}
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void RenderMathMLSpace::getSpaceHeightAndDepth(LayoutUnit& height, LayoutUnit& depth) const
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{
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auto& spaceElement = element();
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height = toUserUnits(spaceElement.height(), style(), 0);
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depth = toUserUnits(spaceElement.depth(), style(), 0);
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// If the total height is negative, set vertical dimensions to 0.
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if (height + depth < 0) {
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height = 0;
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depth = 0;
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}
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}
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void RenderMathMLSpace::layoutBlock(bool relayoutChildren, LayoutUnit)
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{
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ASSERT(needsLayout());
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if (!relayoutChildren && simplifiedLayout())
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return;
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setLogicalWidth(spaceWidth());
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LayoutUnit height, depth;
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getSpaceHeightAndDepth(height, depth);
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setLogicalHeight(height + depth);
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updateScrollInfoAfterLayout();
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clearNeedsLayout();
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}
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std::optional<LayoutUnit> RenderMathMLSpace::firstLineBaseline() const
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{
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LayoutUnit height, depth;
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getSpaceHeightAndDepth(height, depth);
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return height;
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}
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}
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#endif
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