/*

 * This file is part of the internal font implementation.  It should not be included by anyone other than

 * FontMac.cpp, FontWin.cpp and Font.cpp.

 *

 * 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 FontPlatformData_h

#define FontPlatformData_h

#include "StringImpl.h"

#ifdef __OBJC__

@class NSFont;

#else

class NSFont;

#endif

#include <CoreFoundation/CFBase.h>

#include <objc/objc-auto.h>

namespace WebCore {

struct FontPlatformData {

    class Deleted {};

    FontPlatformData(Deleted)

    : syntheticBold(false), syntheticOblique(false), m_font((NSFont*)-1)

    {}

    FontPlatformData(NSFont* f = 0, bool b = false, bool o = false)

    : syntheticBold(b), syntheticOblique(o), m_font(f)

    {

        if (f) 

            CFRetain(f);

    }

    FontPlatformData(const FontPlatformData& f)

    {

        m_font = (f.m_font && f.m_font != (NSFont*)-1) ? (NSFont*)CFRetain(f.m_font) : f.m_font;

        syntheticBold = f.syntheticBold;

        syntheticOblique = f.syntheticOblique;

    }

    ~FontPlatformData()

    {

        if (m_font && m_font != (NSFont*)-1)

            CFRelease(m_font);

    }

    bool syntheticBold;

    bool syntheticOblique;

    unsigned hash() const

    { 

        uintptr_t hashCodes[2] = { (uintptr_t)m_font, syntheticBold << 1 | syntheticOblique };

        return StringImpl::computeHash(reinterpret_cast<UChar*>(hashCodes), sizeof(hashCodes) / sizeof(UChar));

    }

    bool operator==(const FontPlatformData& other) const

    { 

        return m_font == other.m_font && syntheticBold == other.syntheticBold && syntheticOblique == other.syntheticOblique;

    }

    NSFont *font() const { return m_font; }

    void setFont(NSFont* font) {

        if (m_font == font)

            return;

        if (font && font != (NSFont*)-1)

            CFRetain(font);

        if (m_font && m_font != (NSFont*)-1)

            CFRelease(m_font);

        m_font = font;

    }

private:

    NSFont *m_font;

};

}

#endif