/*

 * Copyright (C) 2007, 2008 Apple Inc. 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 APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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. 

 */

#ifndef CSSFontFace_h

#define CSSFontFace_h

#include "FontTraitsMask.h"

#include <wtf/HashSet.h>

#include <wtf/PassRefPtr.h>

#include <wtf/RefCounted.h>

#include <wtf/Vector.h>

#include <wtf/unicode/Unicode.h>

namespace WebCore {

class CSSFontFaceSource;

class CSSSegmentedFontFace;

class FontDescription;

class SimpleFontData;

class CSSFontFace : public RefCounted<CSSFontFace> {

public:

    static PassRefPtr<CSSFontFace> create(FontTraitsMask traitsMask) { return adoptRef(new CSSFontFace(traitsMask)); }

    ~CSSFontFace();

    FontTraitsMask traitsMask() const { return m_traitsMask; }

    struct UnicodeRange;

    void addRange(UChar32 from, UChar32 to) { m_ranges.append(UnicodeRange(from, to)); }

    const Vector<UnicodeRange>& ranges() const { return m_ranges; }

    void addedToSegmentedFontFace(CSSSegmentedFontFace*);

    void removedFromSegmentedFontFace(CSSSegmentedFontFace*);

    bool isLoaded() const;

    bool isValid() const;

    void addSource(CSSFontFaceSource*);

    void fontLoaded(CSSFontFaceSource*);

    SimpleFontData* getFontData(const FontDescription&, bool syntheticBold, bool syntheticItalic);

    struct UnicodeRange {

        UnicodeRange(UChar32 from, UChar32 to)

            : m_from(from)

            , m_to(to)

        {

        }

        UChar32 from() const { return m_from; }

        UChar32 to() const { return m_to; }

    private:

        UChar32 m_from;

        UChar32 m_to;

    };

private:

    CSSFontFace(FontTraitsMask traitsMask)

        : m_traitsMask(traitsMask)

        , m_activeSource(0)

    {

    }

    FontTraitsMask m_traitsMask;

    Vector<UnicodeRange> m_ranges;

    HashSet<CSSSegmentedFontFace*> m_segmentedFontFaces;

    Vector<CSSFontFaceSource*> m_sources;

    CSSFontFaceSource* m_activeSource;

};

}

#endif