RenderMathMLFraction.h [plain text]
#pragma once
#if ENABLE(MATHML)
#include "MathMLFractionElement.h"
#include "MathMLInlineContainerElement.h"
#include "RenderMathMLBlock.h"
namespace WebCore {
class RenderMathMLFraction final : public RenderMathMLBlock {
public:
RenderMathMLFraction(MathMLInlineContainerElement&, RenderStyle&&);
float relativeLineThickness() const { return m_defaultLineThickness ? m_lineThickness / m_defaultLineThickness : LayoutUnit(0); }
private:
bool isRenderMathMLFraction() const final { return true; }
const char* renderName() const final { return "RenderMathMLFraction"; }
void computePreferredLogicalWidths() final;
void layoutBlock(bool relayoutChildren, LayoutUnit pageLogicalHeight = 0) final;
Optional<int> firstLineBaseline() const final;
void paint(PaintInfo&, const LayoutPoint&) final;
RenderMathMLOperator* unembellishedOperator() final;
MathMLFractionElement& element() const { return static_cast<MathMLFractionElement&>(nodeForNonAnonymous()); }
bool isStack() const { return !m_lineThickness; }
bool isValid() const;
RenderBox& numerator() const;
RenderBox& denominator() const;
LayoutUnit horizontalOffset(RenderBox&, MathMLFractionElement::FractionAlignment);
void updateLayoutParameters();
LayoutUnit m_ascent;
LayoutUnit m_defaultLineThickness { 1 };
LayoutUnit m_lineThickness;
union {
LayoutUnit m_numeratorGapMin;
LayoutUnit m_gapMin;
};
LayoutUnit m_denominatorGapMin;
union {
LayoutUnit m_numeratorMinShiftUp;
LayoutUnit m_topShiftUp;
};
union {
LayoutUnit m_denominatorMinShiftDown;
LayoutUnit m_bottomShiftDown;
};
};
}
SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(RenderMathMLFraction, isRenderMathMLFraction())
#endif // ENABLE(MATHML)