/*

 * This file is part of the internal font implementation.

 *

 * Copyright (C) 2006 Apple Computer, Inc.

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Library General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Library General Public License for more details.

 *

 * You should have received a copy of the GNU Library General Public License

 * along with this library; see the file COPYING.LIB.  If not, write to

 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

 * Boston, MA 02110-1301, USA.

 *

 */

#ifndef FontData_h

#define FontData_h

#include "FontPlatformData.h"

#include "GlyphPageTreeNode.h"

#include "GlyphWidthMap.h"

#include <wtf/Noncopyable.h>

#include <wtf/unicode/Unicode.h>

#if PLATFORM(MAC)

typedef struct OpaqueATSUStyle* ATSUStyle;

#endif

#if PLATFORM(WIN)

#include <usp10.h>

#endif

namespace WebCore {

class FontDescription;

class FontPlatformData;

class WidthMap;

enum Pitch { UnknownPitch, FixedPitch, VariablePitch };

class FontData : Noncopyable {

public:

    FontData(const FontPlatformData&);

    ~FontData();

public:

    const FontPlatformData& platformData() const { return m_font; }

    FontData* smallCapsFontData(const FontDescription& fontDescription) const;

    // vertical metrics

    int ascent() const { return m_ascent; }

    int descent() const { return m_descent; }

    int lineSpacing() const { return m_lineSpacing; }

    int lineGap() const { return m_lineGap; }

    float xHeight() const { return m_xHeight; }

    float widthForGlyph(Glyph) const;

    float platformWidthForGlyph(Glyph) const;

    bool containsCharacters(const UChar* characters, int length) const;

    void determinePitch();

    Pitch pitch() const { return m_treatAsFixedPitch ? FixedPitch : VariablePitch; }

    const GlyphData& missingGlyphData() const { return m_missingGlyphData; }

#if PLATFORM(MAC)

    NSFont* getNSFont() const { return m_font.font(); }

    void checkShapesArabic() const;

    bool shapesArabic() const

    {

        if (!m_checkedShapesArabic)

            checkShapesArabic();

        return m_shapesArabic;

    }

#endif

#if PLATFORM(WIN)

    bool isSystemFont() const { return m_isSystemFont; }

    SCRIPT_FONTPROPERTIES* scriptFontProperties() const;

    SCRIPT_CACHE* scriptCache() const { return &m_scriptCache; }

#endif

#if PLATFORM(GTK)

    void setFont(cairo_t*) const;

#endif

private:

    void platformInit();

    void platformDestroy();

public:

    int m_ascent;

    int m_descent;

    int m_lineSpacing;

    int m_lineGap;

    float m_xHeight;

    FontPlatformData m_font;

    mutable GlyphWidthMap m_glyphToWidthMap;

    bool m_treatAsFixedPitch;

    Glyph m_spaceGlyph;

    float m_spaceWidth;

    float m_adjustedSpaceWidth;

    GlyphData m_missingGlyphData;

    mutable FontData* m_smallCapsFontData;

#if PLATFORM(CG)

    float m_syntheticBoldOffset;

#endif

#if PLATFORM(MAC)

    void* m_styleGroup;

    mutable ATSUStyle m_ATSUStyle;

    mutable bool m_ATSUStyleInitialized;

    mutable bool m_ATSUMirrors;

    mutable bool m_checkedShapesArabic;

    mutable bool m_shapesArabic;

#endif

#if PLATFORM(WIN)

    bool m_isSystemFont;

    mutable SCRIPT_CACHE m_scriptCache;

    mutable SCRIPT_FONTPROPERTIES* m_scriptFontProperties;

#endif

};

} // namespace WebCore

#endif // FontData_h