98 lines
3.4 KiB
C++
98 lines
3.4 KiB
C++
/*
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* Copyright (C) 2010 Alex Milowski (alex@milowski.com). 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 "RenderMathMLMath.h"
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#if ENABLE(MATHML)
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#include "MathMLNames.h"
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#include "MathMLRowElement.h"
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#include <wtf/IsoMallocInlines.h>
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namespace WebCore {
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using namespace MathMLNames;
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WTF_MAKE_ISO_ALLOCATED_IMPL(RenderMathMLMath);
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RenderMathMLMath::RenderMathMLMath(MathMLRowElement& element, RenderStyle&& style)
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: RenderMathMLRow(element, WTFMove(style))
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{
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}
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void RenderMathMLMath::centerChildren(LayoutUnit contentWidth)
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{
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LayoutUnit centerBlockOffset = (logicalWidth() - contentWidth) / 2;
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if (!style().isLeftToRightDirection())
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centerBlockOffset = -centerBlockOffset;
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for (auto* child = firstChildBox(); child; child = child->nextSiblingBox()) {
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if (!child->isOutOfFlowPositioned())
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child->setLocation(child->location() + LayoutPoint(centerBlockOffset, 0_lu));
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}
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}
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void RenderMathMLMath::layoutBlock(bool relayoutChildren, LayoutUnit pageLogicalHeight)
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{
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ASSERT(needsLayout());
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if (style().display() != DisplayType::Block) {
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RenderMathMLRow::layoutBlock(relayoutChildren, pageLogicalHeight);
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return;
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}
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if (!relayoutChildren && simplifiedLayout())
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return;
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recomputeLogicalWidth();
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setLogicalHeight(borderAndPaddingLogicalHeight() + scrollbarLogicalHeight());
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LayoutUnit width, ascent, descent;
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stretchVerticalOperatorsAndLayoutChildren();
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getContentBoundingBox(width, ascent, descent);
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layoutRowItems(logicalWidth(), ascent);
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// Display formulas must be centered horizontally if there is extra space left.
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// Otherwise, logical width must be updated to the content width to avoid truncation.
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if (width < logicalWidth())
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centerChildren(width);
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else
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setLogicalWidth(width);
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setLogicalHeight(borderTop() + paddingTop() + ascent + descent + borderBottom() + paddingBottom() + horizontalScrollbarHeight());
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updateLogicalHeight();
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layoutPositionedObjects(relayoutChildren);
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updateScrollInfoAfterLayout();
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clearNeedsLayout();
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}
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}
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#endif // ENABLE(MATHML)
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