svglisttraits.h

来自「linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自Web」· C头文件 代码 · 共 54 行

/*
    Copyright (C) 2006 Nikolas Zimmermann <[e-mail]>
                  2006 Apple Computer Inc.

    This file is part of the KDE project

    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 SVGListTraits_h
#define SVGListTraits_h

#if ENABLE(SVG)

namespace WebCore {

    template<typename Item> struct UsesDefaultInitializer { static const bool value = true; };
    template<> struct UsesDefaultInitializer<double>      { static const bool value = false; };

    template<bool usesDefaultInitializer, typename Item>
    struct SVGListTraits { };

    template<typename Item>
    struct SVGListTraits<true, Item>
    {
        static Item nullItem() { return Item(); } 
    };

    template<>
    struct SVGListTraits<false, double>
    {
        static double nullItem() { return 0.0; }
    };

} // namespace WebCore

#endif // SVG_SUPPORT
#endif // SVGListTraits_h

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