87 lines
3.1 KiB
C++
87 lines
3.1 KiB
C++
/*
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* Copyright (C) 2009 Alex Milowski (alex@milowski.com). All rights reserved.
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* Copyright (C) 2016 Igalia S.L.
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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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#pragma once
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#if ENABLE(MATHML)
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#include "MathOperator.h"
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#include "RenderMathMLRow.h"
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namespace WebCore {
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class MathMLRootElement;
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enum class RootType { SquareRoot, RootWithIndex };
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// Render base^(1/index), or sqrt(base) using radical notation.
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class RenderMathMLRoot final : public RenderMathMLRow {
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WTF_MAKE_ISO_ALLOCATED(RenderMathMLRoot);
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public:
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RenderMathMLRoot(MathMLRootElement&, RenderStyle&&);
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void updateStyle();
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private:
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bool isValid() const;
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RenderBox& getBase() const;
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RenderBox& getIndex() const;
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bool isRenderMathMLRoot() const final { return true; }
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const char* renderName() const final { return "RenderMathMLRoot"; }
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MathMLRootElement& element() const;
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RootType rootType() const;
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void styleDidChange(StyleDifference, const RenderStyle* oldStyle) final;
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void computePreferredLogicalWidths() final;
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void layoutBlock(bool relayoutChildren, LayoutUnit pageLogicalHeight = 0_lu) final;
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void paint(PaintInfo&, const LayoutPoint&) final;
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struct HorizontalParameters {
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LayoutUnit kernBeforeDegree;
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LayoutUnit kernAfterDegree;
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};
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HorizontalParameters horizontalParameters();
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struct VerticalParameters {
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LayoutUnit verticalGap;
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LayoutUnit ruleThickness;
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LayoutUnit extraAscender;
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float degreeBottomRaisePercent;
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};
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VerticalParameters verticalParameters();
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MathOperator m_radicalOperator;
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LayoutUnit m_radicalOperatorTop;
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LayoutUnit m_baseWidth;
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bool isRenderMathMLSquareRoot() const final { return rootType() == RootType::SquareRoot; }
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};
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} // namespace WebCore
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SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(RenderMathMLRoot, isRenderMathMLRoot())
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#endif // ENABLE(MATHML)
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