TuttleOFX/libraries/tuttle/src/tuttle/plugin/interact/Frame.hpp

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#ifndef _TUTTLE_PLUGIN_INTERACT_FRAME_HPP_
#define _TUTTLE_PLUGIN_INTERACT_FRAME_HPP_

#include <tuttle/plugin/global.hpp>
#include <ofxsImageEffect.h>

namespace tuttle {
namespace plugin {
namespace interact {

struct IFrame
{
        virtual ~IFrame()                                      = 0;
        virtual bool     isEnabled() const                    = 0;
        virtual OfxRectD getFrame( const OfxTime time ) const = 0;
};

struct FrameClip : virtual public IFrame
{
        const OFX::Clip& _clip;
        FrameClip( const OFX::Clip* clip )
                : _clip( *clip )
        {}

        bool isEnabled() const
        {
                return _clip.isConnected();
        }

        OfxRectD getFrame( const OfxTime time ) const
        {
                static const OfxRectD frame = { 0, 1, 0, 1 };

                if( _clip.isConnected() )
                        return _clip.getCanonicalRod( time );
                return frame;
        }

};

struct FrameOptionalClip : virtual public IFrame
{
        const OFX::Clip& _optionalClip;
        const OFX::Clip& _clip;
        FrameOptionalClip( const OFX::Clip* optionalClip, const OFX::Clip* clip )
                : _optionalClip( *optionalClip )
                , _clip( *clip )
        {}

        bool isEnabled() const
        {
                return _optionalClip.isConnected() || _clip.isConnected();
        }

        OfxRectD getFrame( const OfxTime time ) const
        {
                static const OfxRectD frame = { 0, 1, 0, 1 };

                if( _optionalClip.isConnected() )
                        return _optionalClip.getCanonicalRod( time );
                if( _clip.isConnected() )
                        return _clip.getCanonicalRod( time );
                return frame;
        }

};

}
}
}

#endif