fontmanager.h

/*
   Copyright (C) 2014 - 2016 Mutzii

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   This program 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 General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.

*/
#ifndef FONTMANAGER_H
#define FONTMANAGER_H

#include "index.h"
#include "logmanager.h"
#include "texturemanager.h"

namespace Engine
{

   struct FontAtlasCharUV
   {
       float u;
       float v;
   };

   struct FontAtlasChar
   {
       char c;

       int x,y;
       int width;
       int height;

       FontAtlasCharUV uvs[6];
   };

   struct FontAtlas
   {
       FontAtlasChar chars[128];

       int atlas_width;
       int atlas_height;

       Texture * texture;
   };


class FontManager
{
   public:

        using CharMapping = std::map< char , Texture * >;

    private:

        static FontManager * ptrInstance; 
        FontManager(void);
        FontManager(const FontManager & ){}
        void operator=(const FontManager &){}

    public:

        static FontManager * getSingletonPtr(void);
        void finish(void);

        /*NEW*/
        FontAtlas createFontAtlas(const std::string & ttf_file );


        FT_Face createFontFace( const std::string & ttf_file );

        void load( FT_Face face , const std::string & asci );
        void unload(void);

        Texture * getCharTexture( char c ) throw( std::runtime_error );

        void CharRegister( char c , Texture * buffer );


    protected:

        /*New*/
        Vector2f getAtlasVector( FT_Face font );

    private:

        FT_Library mFreeType;     
        CharMapping mCharMapping; 
};

}

#endif // FONTMANAGER_H