RenderMathMLMath.cpp [plain text]
#include "config.h"
#include "RenderMathMLMath.h"
#if ENABLE(MATHML)
#include "MathMLNames.h"
#include "MathMLRowElement.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
using namespace MathMLNames;
WTF_MAKE_ISO_ALLOCATED_IMPL(RenderMathMLMath);
RenderMathMLMath::RenderMathMLMath(MathMLRowElement& element, RenderStyle&& style)
: RenderMathMLRow(element, WTFMove(style))
{
}
void RenderMathMLMath::centerChildren(LayoutUnit contentWidth)
{
LayoutUnit centerBlockOffset = (logicalWidth() - contentWidth) / 2;
if (!style().isLeftToRightDirection())
centerBlockOffset = -centerBlockOffset;
for (auto* child = firstChildBox(); child; child = child->nextSiblingBox()) {
if (!child->isOutOfFlowPositioned())
child->setLocation(child->location() + LayoutPoint(centerBlockOffset, 0_lu));
}
}
void RenderMathMLMath::layoutBlock(bool relayoutChildren, LayoutUnit pageLogicalHeight)
{
ASSERT(needsLayout());
if (style().display() != DisplayType::Block) {
RenderMathMLRow::layoutBlock(relayoutChildren, pageLogicalHeight);
return;
}
if (!relayoutChildren && simplifiedLayout())
return;
recomputeLogicalWidth();
setLogicalHeight(borderAndPaddingLogicalHeight() + scrollbarLogicalHeight());
LayoutUnit width, ascent, descent;
stretchVerticalOperatorsAndLayoutChildren();
getContentBoundingBox(width, ascent, descent);
layoutRowItems(logicalWidth(), ascent);
if (width < logicalWidth())
centerChildren(width);
else
setLogicalWidth(width);
setLogicalHeight(borderTop() + paddingTop() + ascent + descent + borderBottom() + paddingBottom() + horizontalScrollbarHeight());
updateLogicalHeight();
layoutPositionedObjects(relayoutChildren);
clearNeedsLayout();
}
}
#endif // ENABLE(MATHML)