/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * 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

#include <vos/module.hxx>
#include <vcl/bitmap.hxx>
#include "twain/twain.h"


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

#define TWAIN_SELECT			0x00000001UL
#define TWAIN_ACQUIRE			0x00000002UL
#define TWAIN_TERMINATE			0xFFFFFFFFUL

#define TWAIN_EVENT_NONE		0x00000000UL
#define TWAIN_EVENT_QUIT		0x00000001UL
#define TWAIN_EVENT_SCANNING	0x00000002UL
#define TWAIN_EVENT_XFER		0x00000004UL

// ------------
// - ImpTwain -
// ------------

class ImpTwain
{
	TW_IDENTITY					aAppIdent;
	TW_IDENTITY					aSrcIdent;
	Link						aNotifyLink;
	Bitmap						aBitmap;
	DSMENTRYPROC				pDSM;
	vos:: OModule *	pMod;
	sal_uLong						nCurState;

	void						ImplCreate();
	void						ImplOpenSourceManager();
	void						ImplOpenSource();
	sal_Bool						ImplEnableSource();
	void						ImplXfer();
	void						ImplFallback( sal_uLong nEvent );

								DECL_LINK( ImplFallbackHdl, void* );
								DECL_LINK( ImplDestroyHdl, void* );

public:

	sal_Bool						ImplHandleMsg( void* pMsg );

#ifdef OS2
	HAB							hAB;
	HWND						hTwainWnd;
	long						hTwainHook;
#else
	HWND						hTwainWnd;
	HHOOK						hTwainHook;
#endif

public:

								ImpTwain( const Link& rNotifyLink );
								~ImpTwain();

	void						Destroy();

	sal_Bool						SelectSource();
	sal_Bool						InitXfer();
	Bitmap						GetXferBitmap();
};

#endif // _TWAIN_HXX
