windowSystem.h

/* Copyright (c) 2006-2014, Stefan Eilemann <eile@equalizergraphics.com>
 *                    2011, Daniel Pfeifer <daniel@pfeifer-mail.de>
 *                    2014, Daniel Nachbaur <danielnachbaur@gmail.com>
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License version 2.1 as published
 * by the Free Software Foundation.
 *
 * 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 Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef EQ_WINDOWSYSTEM_H
#define EQ_WINDOWSYSTEM_H

#include <eq/client/api.h>
#include <eq/client/types.h>

namespace eq
{

class WindowSystemIF
{
public:
    virtual ~WindowSystemIF() {}

protected:
    EQ_API WindowSystemIF();

    static uint32_t _setupLists( util::ObjectManager& gl, const void* key,
                                 const int num );

    virtual std::string getName() const = 0;

    virtual SystemPipe* createPipe( Pipe* pipe ) = 0;

    virtual MessagePump* createMessagePump() = 0;

    virtual SystemWindow* createWindow( Window* window,
                                        const WindowSettings& settings ) = 0;

    virtual bool setupFont( util::ObjectManager& gl, const void* key,
                            const std::string& name,
                            const uint32_t size ) const = 0;

    virtual void configInit( Node* /*node*/ ) {}

    virtual void configExit( Node* /*node*/ ) {}

    virtual bool hasMainThreadEvents() const { return false; }

private:
    WindowSystemIF* _next;
    friend class WindowSystem;
};

class WindowSystem
{
public:
    EQ_API explicit WindowSystem( const std::string& name );

    static bool supports( const std::string& type );

    static void configInit( Node* node );
    static void configExit( Node* node );

    EQ_API std::string getName() const;

    EQ_API SystemWindow* createWindow( Window* window,
                                       const WindowSettings& settings );
    EQ_API SystemPipe* createPipe( Pipe* pipe );
    EQ_API MessagePump* createMessagePump();
    EQ_API bool setupFont( util::ObjectManager& gl, const void* key,
                           const std::string& name, const uint32_t size ) const;
    EQ_API bool hasMainThreadEvents() const;

    EQ_API bool operator == ( const WindowSystem& other ) const;
    EQ_API bool operator != ( const WindowSystem& other ) const;

private:
    WindowSystem();
    WindowSystemIF* _impl;
    void _chooseImpl( const std::string& name );
};

EQ_API std::ostream& operator << ( std::ostream& os, const WindowSystem& );

EQ_API co::DataOStream& operator << ( co::DataOStream& os, const WindowSystem& );

EQ_API co::DataIStream& operator >> ( co::DataIStream& is, WindowSystem& ws );

} // namespace eq

#endif // EQ_WINDOWSYSTEM_H