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/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2008 by Sun Microsystems, Inc.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * $RCSfile: twain.hxx,v $
 * $Revision: 1.3 $
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org 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 version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/

#ifndef _TWAIN_HXX
#define _TWAIN_HXX

// please add new platforms if TWAIN is available
#if defined WIN || defined WNT || defined UNX
#define TWAIN_AVAILABLE 1
#else
#undef  TWAIN_AVAILABLE
#endif

// include following only, if define is not set
#ifndef _TWAIN_HXX_CHECK

#include <vcl/bitmap.hxx>

// -----------
// - Defines -
// -----------

#define TWAIN_ERR_NO_ERROR                  0
#define TWAIN_ERR_MODULE_NOT_LOADED         2
#define TWAIN_ERR_DSMENTRY_NOT_FOUND        4
#define TWAIN_ERR_SOURCE_MANAGER_NOT_OPENED 6
#define TWAIN_ERR_SOURCE_SELECTION_DIALOG   8

// ---------
// - Twain -
// ---------

struct TwainImp;
namespace com { namespace sun { namespace star { namespace lang { struct EventObject; } } } }

class Twain
{
friend class TwainEventListener;

private:

    TwainImp*           mpImp;

    Bitmap              maBitmap;
    Link                maUpdateLink;
    USHORT              mnErrorCode;
    BOOL                mbScanning;

                        Twain();
                        Twain( const Twain& rTwain );
    const Twain&        operator=( const Twain& rTwain ) { return *this; }

protected:

    void                Disposing( const com::sun::star::lang::EventObject& rEventObject );

public:

                        Twain( const Link& rUpdateLink );
                        ~Twain();

    BOOL                SelectSource();
    BOOL                PerformTransfer();

    Bitmap              GetBitmap();

    BOOL                IsScanning() const { return mbScanning; }
    USHORT              GetErrorCode() const { return mnErrorCode; }
};

#endif // _TWAIN_HXX_CHECK
#endif // _TWAIN_HXX