IFontProvider.h

/******************************************************************************
Este arquivo eh parte da implementacao do ambiente declarativo do middleware
Ginga (Ginga-NCL).

Direitos Autorais Reservados (c) 1989-2007 PUC-Rio/Laboratorio TeleMidia

Este programa eh software livre; voce pode redistribui-lo e/ou modificah-lo sob
os termos da Licenca Publica Geral GNU versao 2 conforme publicada pela Free
Software Foundation.

Este programa eh distribuido na expectativa de que seja util, porem, SEM
NENHUMA GARANTIA; nem mesmo a garantia implicita de COMERCIABILIDADE OU
ADEQUACAO A UMA FINALIDADE ESPECIFICA. Consulte a Licenca Publica Geral do
GNU versao 2 para mais detalhes.

Voce deve ter recebido uma copia da Licenca Publica Geral do GNU versao 2 junto
com este programa; se nao, escreva para a Free Software Foundation, Inc., no
endereco 59 Temple Street, Suite 330, Boston, MA 02111-1307 USA.

Para maiores informacoes:
ncl @ telemidia.puc-rio.br
http://www.ncl.org.br
http://www.ginga.org.br
http://www.telemidia.puc-rio.br
******************************************************************************
This file is part of the declarative environment of middleware Ginga (Ginga-NCL)

Copyright: 1989-2007 PUC-RIO/LABORATORIO TELEMIDIA, All Rights Reserved.

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License version 2 as published by
the Free Software Foundation.

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 version 2 for more
details.

You should have received a copy of the GNU General Public License version 2
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA

For further information contact:
ncl @ telemidia.puc-rio.br
http://www.ncl.org.br
http://www.ginga.org.br
http://www.telemidia.puc-rio.br
*******************************************************************************/

#ifndef IFONTPROVIDER_H_
#define IFONTPROVIDER_H_

#include "mb/IMBDefs.h"
#include "mb/interface/IDiscreteMediaProvider.h"

namespace br {
namespace pucrio {
namespace telemidia {
namespace ginga {
namespace core {
namespace mb {
    class IFontProvider : public IDiscreteMediaProvider {
        public:
            static const short FP_AUTO_WORDWRAP = -10;

            static const short FP_TA_LEFT   = 0x01;
            static const short FP_TA_CENTER = 0x02;
            static const short FP_TA_RIGHT  = 0x04;

            virtual ~IFontProvider(){};

            virtual string getLoadSymbol()=0;

            virtual void* getFontProviderContent()=0;

            virtual void getStringExtents(const char* text, int* w, int* h)=0;
            virtual int getStringWidth(const char* text, int textLength=0)=0;
            virtual int getHeight()=0;

            virtual void playOver(ISurface* surface)=0;

            virtual void playOver(
                    ISurface* surface,
                    const char* text,
                    int x, int y, short align)=0;
    };
}
}
}
}
}
}

typedef ::br::pucrio::telemidia::ginga::core::mb::IFontProvider*
        FontProviderCreator(
                GingaScreenID screenId,
                const char* fontUri,
                int heightInPixel);

typedef void FontProviderDestroyer(
        ::br::pucrio::telemidia::ginga::core::mb::IFontProvider* fp);

#endif /*IFONTPROVIDER_H_*/