MathMLStyle.h   [plain text]

/*
 * Copyright (C) 2016 Igalia S.L. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once

#if ENABLE(MATHML)

#include "Element.h"
#include <wtf/RefCounted.h>

namespace WebCore {

class MathMLStyle: public RefCounted<MathMLStyle> {
public:
    MathMLStyle() { }
    static Ref<MathMLStyle> create();

    bool displayStyle() const { return m_displayStyle; }
    void setDisplayStyle(bool displayStyle) { m_displayStyle = displayStyle; }

    // These are the mathvariant values from the MathML recommendation.
    // The special value none means that no explicit mathvariant value has been specified.
    // Note that the numeral values are important for the computation performed in the mathVariant function of RenderMathMLToken, do not change them!
    enum MathVariant {
        None = 0,
        Normal = 1,
        Bold = 2,
        Italic = 3,
        BoldItalic = 4,
        Script = 5,
        BoldScript = 6,
        Fraktur = 7,
        DoubleStruck = 8,
        BoldFraktur = 9,
        SansSerif = 10,
        BoldSansSerif = 11,
        SansSerifItalic = 12,
        SansSerifBoldItalic = 13,
        Monospace = 14,
        Initial = 15,
        Tailed = 16,
        Looped = 17,
        Stretched = 18
    };
    MathVariant mathVariant() const { return m_mathVariant; }
    void setMathVariant(MathVariant mathvariant) { m_mathVariant = mathvariant; }

    void resolveMathMLStyle(RenderObject*);
    static void resolveMathMLStyleTree(RenderObject*);

private:
    bool isDisplayStyleAlwaysFalse(RenderObject*);
    const MathMLStyle* getMathMLStyle(RenderObject* renderer);
    RenderObject* getMathMLParentNode(RenderObject*);
    void updateStyleIfNeeded(RenderObject*, bool, MathVariant);
    MathVariant parseMathVariant(const AtomicString& attributeValue);

    bool m_displayStyle { false };
    MathVariant m_mathVariant { None };
};

}

#endif // ENABLE(MATHML)