OpenGTA/font_cache.h

/************************************************************************
* Copyright (c) 2005-2007 tok@openlinux.org.uk                          *
*                                                                       *
* This software is provided as-is, without any express or implied       *
* warranty. In no event will the authors be held liable for any         *
* damages arising from the use of this software.                        *
*                                                                       *
* Permission is granted to anyone to use this software for any purpose, *
* including commercial applications, and to alter it and redistribute   *
* it freely, subject to the following restrictions:                     *
*                                                                       *
* 1. The origin of this software must not be misrepresented; you must   *
* not claim that you wrote the original software. If you use this       *
* software in a product, an acknowledgment in the product documentation *
* would be appreciated but is not required.                             *
*                                                                       *
* 2. Altered source versions must be plainly marked as such, and must   *
* not be misrepresented as being the original software.                 *
*                                                                       *
* 3. This notice may not be removed or altered from any source          *
* distribution.                                                         *
************************************************************************/
#ifndef FONT_CACHE_H
#define FONT_CACHE_H
#include <string>
#include <map>
#include "gl_font.h"
#include "Singleton.h"

namespace OpenGTA {
  
  class FontCache {
    public:
      FontCache();
      ~FontCache();
      OpenGL::DrawableFont & getFont(const std::string & file, const uint32_t scale);

    private:
      struct FontIdentifier {
        FontIdentifier(const std::string & f, const uint32_t s) : filename(f), scale(s) {}
        const std::string filename;
        const uint32_t scale;
        bool operator == (const FontIdentifier & o) const {
          if (scale == o.scale && filename == o.filename)
            return true;
          return false;
        }
        bool operator < (const FontIdentifier & o) const {
          if (scale < o.scale)
            return true;
          if (scale > o.scale)
            return false;
          return filename < o.filename;
        }
      };
      typedef std::map<FontIdentifier, OpenGL::DrawableFont*> FontMap;
      FontMap loadedFonts;
      FontMap::iterator findFont(const std::string & file, const uint32_t & scale);
      OpenGL::DrawableFont* createFont(const std::string & file, const uint32_t & scale);
  };

  typedef Loki::SingletonHolder<FontCache> FontCacheHolder;
}

#endif