include/eq/fabric/window.h

/* Copyright (c) 2010-2011, Stefan Eilemann <eile@equalizergraphics.com> 
 *                    2010, Cedric Stalder <cedric.stalder@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 EQFABRIC_WINDOW_H
#define EQFABRIC_WINDOW_H

#include <eq/fabric/object.h>        // base class

#include <eq/fabric/drawableConfig.h> // enum
#include <eq/fabric/paths.h>
#include <eq/fabric/pixelViewport.h>
#include <eq/fabric/viewport.h>
#include <eq/fabric/visitorResult.h> // enum

namespace eq
{
    class Window;
namespace server 
{ 
    class Window;
}
namespace fabric
{
    template< class P, class W, class C > class Window : public Object
    {
    public:
        typedef std::vector< C* >  Channels; 
        typedef ElementVisitor< W, LeafVisitor< C > > Visitor;

        void init();

        const P* getPipe() const { return _pipe; }
        P* getPipe() { return _pipe; }

        const Channels& getChannels() const { return _channels; }

        const DrawableConfig& getDrawableConfig() const
            { return _data.drawableConfig; }

        const PixelViewport& getPixelViewport() const { return _data.pvp; }

        const Viewport& getViewport() const { return _data.vp; }

        EQFABRIC_INL virtual void setPixelViewport(const PixelViewport& pvp);

        EQFABRIC_INL void setViewport( const Viewport& vp );

        bool hasFixedViewport( ) const { return _data.fixedVP; }

        virtual void notifyViewportChanged();

        EQFABRIC_INL VisitorResult accept( Visitor& visitor );

        EQFABRIC_INL VisitorResult accept( Visitor& visitor ) const;


        enum IAttribute
        {
            // Note: also update string array initialization in window.ipp
            IATTR_HINT_STEREO,           
            IATTR_HINT_DOUBLEBUFFER,     
            IATTR_HINT_FULLSCREEN,       
            IATTR_HINT_DECORATION,       
            IATTR_HINT_SWAPSYNC,         
            IATTR_HINT_DRAWABLE,         
            IATTR_HINT_STATISTICS,       
            IATTR_HINT_SCREENSAVER,      
            IATTR_PLANES_COLOR,          
            IATTR_PLANES_ALPHA,          
            IATTR_PLANES_DEPTH,          
            IATTR_PLANES_STENCIL,        
            IATTR_PLANES_ACCUM,          
            IATTR_PLANES_ACCUM_ALPHA,    
            IATTR_PLANES_SAMPLES,        
            IATTR_LAST,
            IATTR_ALL = IATTR_LAST + 5
        };

        void setIAttribute( const IAttribute attr,
                                      const int32_t value )
            { _data.iAttributes[attr] = value; }

        int32_t  getIAttribute( const IAttribute attr ) const
            { return _data.iAttributes[attr]; }

        EQFABRIC_INL static const std::string& getIAttributeString(
                                                      const IAttribute attr );

        EQFABRIC_INL WindowPath getPath() const;

        EQFABRIC_INL virtual void backup(); 
        EQFABRIC_INL virtual void restore(); 
        void create( C** channel ); 
        void release( C* channel ); 
        virtual void output( std::ostream& ) const {} 


    protected: 
        Window( P* parent );

        EQFABRIC_INL virtual ~Window(); 

        virtual void attach( const co::base::UUID& id,
                             const uint32_t instanceID );

        EQFABRIC_INL virtual void serialize( co::DataOStream& os,
                                                const uint64_t dirtyBits );
        EQFABRIC_INL virtual void deserialize( co::DataIStream& is, 
                                                  const uint64_t dirtyBits );
        
        EQFABRIC_INL virtual void notifyDetach(); 

        EQFABRIC_INL virtual void setDirty( const uint64_t bits );

        void _setDrawableConfig( const DrawableConfig& drawableConfig );

        virtual ChangeType getChangeType() const { return UNBUFFERED; }

        C* _findChannel( const co::base::UUID& id ); 

        enum DirtyBits
        {
            DIRTY_ATTRIBUTES      = Object::DIRTY_CUSTOM << 0,
            DIRTY_CHANNELS        = Object::DIRTY_CUSTOM << 1,
            DIRTY_VIEWPORT        = Object::DIRTY_CUSTOM << 2,
            DIRTY_DRAWABLECONFIG  = Object::DIRTY_CUSTOM << 3,
            DIRTY_WINDOW_BITS =
                DIRTY_ATTRIBUTES | DIRTY_CHANNELS | DIRTY_VIEWPORT |
                DIRTY_DRAWABLECONFIG | DIRTY_OBJECT_BITS
        };

        virtual uint64_t getRedistributableBits() const
            { return DIRTY_WINDOW_BITS; }

    private:
        P* const _pipe;

        Channels _channels;

        struct BackupData
        {
            BackupData();

            int32_t iAttributes[ IATTR_ALL ];

            DrawableConfig drawableConfig;

            PixelViewport pvp;
        
            Viewport vp;

            bool fixedVP;
        }
            _data, _backup;

        struct Private;
        Private* _private; // placeholder for binary-compatible changes

        friend class Channel< W, C >;
        void _addChannel( C* channel );

        EQFABRIC_INL bool _removeChannel( C* channel );

        EQFABRIC_INL virtual uint32_t commitNB( const uint32_t incarnation );
        bool _mapNodeObjects() { return _pipe->_mapNodeObjects(); }

        typedef co::CommandFunc< Window< P, W, C > > CmdFunc;
        bool _cmdNewChannel( co::Command& command );
        bool _cmdNewChannelReply( co::Command& command );
    };

    template< class P, class W, class C > EQFABRIC_INL
    std::ostream& operator << ( std::ostream& os,
                                const Window< P, W, C >& window );
}
}

#endif // EQFABRIC_WINDOW_H