/************************************************************************* * * $RCSfile: twain.cxx,v $ * * $Revision: 1.2 $ * * last change: $Author: ka $ $Date: 2000-12-07 08:44:52 $ * * The Contents of this file are made available subject to the terms of * either of the following licenses * * - GNU Lesser General Public License Version 2.1 * - Sun Industry Standards Source License Version 1.1 * * Sun Microsystems Inc., October, 2000 * * GNU Lesser General Public License Version 2.1 * ============================================= * Copyright 2000 by Sun Microsystems, Inc. * 901 San Antonio Road, Palo Alto, CA 94303, USA * * 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., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA * * * Sun Industry Standards Source License Version 1.1 * ================================================= * The contents of this file are subject to the Sun Industry Standards * Source License Version 1.1 (the "License"); You may not use this file * except in compliance with the License. You may obtain a copy of the * License at http://www.openoffice.org/license.html. * * Software provided under this License is provided on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, * WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS, * MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING. * See the License for the specific provisions governing your rights and * obligations concerning the Software. * * The Initial Developer of the Original Code is: Sun Microsystems, Inc. * * Copyright: 2000 by Sun Microsystems, Inc. * * All Rights Reserved. * * Contributor(s): _______________________________________ * * ************************************************************************/ #include #include #if defined( WNT ) || defined (WIN) #include #endif #ifdef OS2 #include #endif // OS2 #include #include #include #include #include #include "twain.hxx" // ----------- // - Defines - // ----------- #define PFUNC (*pDSM) #define FIXTODOUBLE( nFix ) ((double)nFix.Whole+(double)nFix.Frac/65536.) #define FIXTOLONG( nFix ) ((long)floor(FIXTODOUBLE(nFix)+0.5)) #if defined WIN #define TWAIN_LIBNAME "TWAIN.DLL" #define TWAIN_FUNCNAME "DSM_Entry" #elif defined WNT #define TWAIN_LIBNAME "TWAIN_32.DLL" #define TWAIN_FUNCNAME "DSM_Entry" #elif defined OS2 #define TWAIN_LIBNAME "twain" #define TWAIN_FUNCNAME "DSM_ENTRY" #endif // ----------- // - Statics - // ----------- static ImpTwain* pImpTwainInstance = NULL; // --------- // - Procs - // --------- #ifdef OS2 #define PTWAINMSG QMSG* MRESULT EXPENTRY TwainWndProc( HWND hWnd, ULONG nMsg, MPARAM nParam1, MPARAM nParam2 ) { return (MRESULT) TRUE; } #else // OS2 #define PTWAINMSG MSG* // ------------------------------------------------------------------------- LRESULT CALLBACK TwainWndProc( HWND hWnd,UINT nMsg, WPARAM nPar1, LPARAM nPar2 ) { return DefWindowProc( hWnd, nMsg, nPar1, nPar2 ); } // ------------------------------------------------------------------------- LRESULT CALLBACK TwainMsgProc( int nCode, WPARAM wParam, LPARAM lParam ) { MSG* pMsg = (MSG*) lParam; if( ( nCode < 0 ) || ( pImpTwainInstance->hTwainWnd != pMsg->hwnd ) || !pImpTwainInstance->ImplHandleMsg( (void*) lParam ) ) { return CallNextHookEx( pImpTwainInstance->hTwainHook, nCode, wParam, lParam ); } else { pMsg->message = WM_USER; pMsg->lParam = 0; return 0; } } #endif // OS2 // ------------ // - ImpTwain - // ------------ ImpTwain::ImpTwain( const Link& rNotifyLink ) : aNotifyLink ( rNotifyLink ), pDSM ( NULL ), pMod ( NULL ), hTwainWnd ( 0 ), hTwainHook ( 0 ), nCurState ( 1 ) { pImpTwainInstance = this; aAppIdent.Id = 0; aAppIdent.Version.MajorNum = 1; aAppIdent.Version.MinorNum = 0; aAppIdent.Version.Language = TWLG_USA; aAppIdent.Version.Country = TWCY_USA; aAppIdent.ProtocolMajor = TWON_PROTOCOLMAJOR; aAppIdent.ProtocolMinor = TWON_PROTOCOLMINOR; aAppIdent.SupportedGroups = DG_IMAGE | DG_CONTROL; strcpy( aAppIdent.Version.Info, "6.0" ); strcpy( aAppIdent.Manufacturer, "Sun Microsystems"); strcpy( aAppIdent.ProductFamily,"Office"); strcpy( aAppIdent.ProductName, "Office"); #ifdef OS2 hAB = Sysdepen::GethAB(); ImplFallback( TWAIN_EVENT_QUIT ); // hTwainWnd = WinCreateWindow( HWND_DESKTOP, WC_FRAME, "dummy", 0, 0, 0, 0, 0, HWND_DESKTOP, HWND_BOTTOM, 0, 0, 0 ); #else HWND hParentWnd = HWND_DESKTOP; WNDCLASS aWc = { 0, &TwainWndProc, 0, sizeof( WNDCLASS ), GetModuleHandle( NULL ), NULL, NULL, NULL, NULL, "TwainClass" }; RegisterClass( &aWc ); hTwainWnd = CreateWindowEx( WS_EX_TOPMOST, aWc.lpszClassName, "TWAIN", 0, 0, 0, 0, 0, hParentWnd, NULL, aWc.hInstance, 0 ); hTwainHook = SetWindowsHookEx( WH_GETMESSAGE, &TwainMsgProc, NULL, GetCurrentThreadId() ); #endif } // ----------------------------------------------------------------------------- ImpTwain::~ImpTwain() { } // ----------------------------------------------------------------------------- void ImpTwain::Destroy() { ImplFallback( TWAIN_EVENT_NONE ); Application::PostUserEvent( LINK( this, ImpTwain, ImplDestroyHdl ), NULL ); } // ----------------------------------------------------------------------------- BOOL ImpTwain::SelectSource() { TW_UINT16 nRet = TWRC_FAILURE; if( !!aBitmap ) aBitmap = Bitmap(); ImplOpenSourceManager(); if( 3 == nCurState ) { TW_IDENTITY aIdent; aIdent.Id = 0, aIdent.ProductName[ 0 ] = '\0'; aNotifyLink.Call( (void*) TWAIN_EVENT_SCANNING ); nRet = PFUNC( &aAppIdent, NULL, DG_CONTROL, DAT_IDENTITY, MSG_USERSELECT, &aIdent ); } ImplFallback( TWAIN_EVENT_QUIT ); return( nRet == TWRC_SUCCESS || nRet == TWRC_CANCEL ); } // ----------------------------------------------------------------------------- BOOL ImpTwain::InitXfer() { BOOL bRet = FALSE; if( !!aBitmap ) aBitmap = Bitmap(); ImplOpenSourceManager(); if( 3 == nCurState ) { ImplOpenSource(); if( 4 == nCurState ) bRet = ImplEnableSource(); } if( !bRet ) ImplFallback( TWAIN_EVENT_QUIT ); return bRet; } // ----------------------------------------------------------------------------- Bitmap ImpTwain::GetXferBitmap() { Bitmap aRet( aBitmap ); aBitmap = Bitmap(); return aRet; } // ----------------------------------------------------------------------------- void ImpTwain::ImplOpenSourceManager() { if( 1 == nCurState ) { pMod = new NAMESPACE_VOS( OModule )(); if( pMod->load( TWAIN_LIBNAME ) ) { nCurState = 2; if( ( ( pDSM = (DSMENTRYPROC) pMod->getSymbol( TWAIN_FUNCNAME ) ) != NULL ) && ( PFUNC( &aAppIdent, NULL, DG_CONTROL, DAT_PARENT, MSG_OPENDSM, &hTwainWnd ) == TWRC_SUCCESS ) ) { nCurState = 3; } } else { delete pMod; pMod = NULL; } } } // ----------------------------------------------------------------------------- void ImpTwain::ImplOpenSource() { if( 3 == nCurState ) { if( ( PFUNC( &aAppIdent, NULL, DG_CONTROL, DAT_IDENTITY, MSG_GETDEFAULT, &aSrcIdent ) == TWRC_SUCCESS ) && ( PFUNC( &aAppIdent, NULL, DG_CONTROL, DAT_IDENTITY, MSG_OPENDS, &aSrcIdent ) == TWRC_SUCCESS ) ) { #ifdef OS2 // negotiate capabilities #else TW_CAPABILITY aCap = { CAP_XFERCOUNT, TWON_ONEVALUE, GlobalAlloc( GHND, sizeof( TW_ONEVALUE ) ) }; TW_ONEVALUE* pVal = (TW_ONEVALUE*) GlobalLock( aCap.hContainer ); pVal->ItemType = TWTY_INT16, pVal->Item = 1; GlobalUnlock( aCap.hContainer ); PFUNC( &aAppIdent, &aSrcIdent, DG_CONTROL, DAT_CAPABILITY, MSG_SET, &aCap ); GlobalFree( aCap.hContainer ); #endif nCurState = 4; } } } // ----------------------------------------------------------------------------- BOOL ImpTwain::ImplEnableSource() { BOOL bRet = FALSE; if( 4 == nCurState ) { TW_USERINTERFACE aUI = { TRUE, TRUE, hTwainWnd }; aNotifyLink.Call( (void*) TWAIN_EVENT_SCANNING ); nCurState = 5; if( PFUNC( &aAppIdent, &aSrcIdent, DG_CONTROL, DAT_USERINTERFACE, MSG_ENABLEDS, &aUI ) == TWRC_SUCCESS ) bRet = TRUE; else nCurState = 4; } return bRet; } // ----------------------------------------------------------------------------- BOOL ImpTwain::ImplHandleMsg( void* pMsg ) { TW_UINT16 nRet; PTWAINMSG pMess = (PTWAINMSG) pMsg; TW_EVENT aEvt = { pMess, MSG_NULL }; nRet = PFUNC( &aAppIdent, &aSrcIdent, DG_CONTROL, DAT_EVENT, MSG_PROCESSEVENT, &aEvt ); if( aEvt.TWMessage != MSG_NULL ) { switch( aEvt.TWMessage ) { case MSG_XFERREADY: { ULONG nEvent = TWAIN_EVENT_QUIT; if( 5 == nCurState ) { nCurState = 6; ImplXfer(); if( !!aBitmap ) nEvent = TWAIN_EVENT_XFER; } ImplFallback( nEvent ); } break; case MSG_CLOSEDSREQ: ImplFallback( TWAIN_EVENT_QUIT ); break; default: break; } } else nRet = TWRC_NOTDSEVENT; return( TWRC_DSEVENT == nRet ); } // ----------------------------------------------------------------------------- void ImpTwain::ImplXfer() { if( nCurState == 6 ) { TW_IMAGEINFO aInfo; TW_UINT32 hDIB = 0; long nWidth = aInfo.ImageWidth; long nHeight = aInfo.ImageLength; long nXRes = FIXTOLONG( aInfo.XResolution ); long nYRes = FIXTOLONG( aInfo.YResolution ); if( PFUNC( &aAppIdent, &aSrcIdent, DG_IMAGE, DAT_IMAGEINFO, MSG_GET, &aInfo ) == TWRC_SUCCESS ) { nWidth = aInfo.ImageWidth; nHeight = aInfo.ImageLength; nXRes = FIXTOLONG( aInfo.XResolution ); nYRes = FIXTOLONG( aInfo.YResolution ); } else nWidth = nHeight = nXRes = nYRes = -1L; switch( PFUNC( &aAppIdent, &aSrcIdent, DG_IMAGE, DAT_IMAGENATIVEXFER, MSG_GET, &hDIB ) ) { case( TWRC_CANCEL ): nCurState = 7; break; case( TWRC_XFERDONE ): { #ifdef OS2 // get OS/2-Bitmap #else // OS2 const ULONG nSize = GlobalSize( (HGLOBAL) hDIB ); char* pBuf = (char*) GlobalLock( (HGLOBAL) hDIB ); if( pBuf ) { SvMemoryStream aMemStm; aMemStm.SetBuffer( pBuf, nSize, FALSE, nSize ); aBitmap.Read( aMemStm, FALSE ); GlobalUnlock( (HGLOBAL) hDIB ); } GlobalFree( (HGLOBAL) hDIB ); #endif // OS2 // set resolution of bitmap if neccessary if ( ( nXRes != -1 ) && ( nYRes != - 1 ) && ( nWidth != - 1 ) && ( nHeight != - 1 ) ) { const MapMode aMapMode( MAP_100TH_INCH, Point(), Fraction( 100, nXRes ), Fraction( 100, nYRes ) ); aBitmap.SetPrefMapMode( aMapMode ); aBitmap.SetPrefSize( Size( nWidth, nHeight ) ); } nCurState = 7; } break; default: break; } } } // ----------------------------------------------------------------------------- void ImpTwain::ImplFallback( ULONG nEvent ) { Application::PostUserEvent( LINK( this, ImpTwain, ImplFallbackHdl ), (void*) nEvent ); } // ----------------------------------------------------------------------------- IMPL_LINK( ImpTwain, ImplFallbackHdl, void*, pData ) { const ULONG nEvent = (ULONG) pData; BOOL bFallback = TRUE; switch( nCurState ) { case( 7 ): case( 6 ): { TW_PENDINGXFERS aXfers; if( PFUNC( &aAppIdent, &aSrcIdent, DG_CONTROL, DAT_PENDINGXFERS, MSG_ENDXFER, &aXfers ) == TWRC_SUCCESS ) { if( aXfers.Count != 0 ) PFUNC( &aAppIdent, &aSrcIdent, DG_CONTROL, DAT_PENDINGXFERS, MSG_RESET, &aXfers ); } nCurState = 5; } break; case( 5 ): { TW_USERINTERFACE aUI = { TRUE, TRUE, hTwainWnd }; PFUNC( &aAppIdent, &aSrcIdent, DG_CONTROL, DAT_USERINTERFACE, MSG_DISABLEDS, &aUI ); nCurState = 4; } break; case( 4 ): { PFUNC( &aAppIdent, NULL, DG_CONTROL, DAT_IDENTITY, MSG_CLOSEDS, &aSrcIdent ); nCurState = 3; } break; case( 3 ): { PFUNC( &aAppIdent, NULL, DG_CONTROL, DAT_PARENT, MSG_CLOSEDSM, &hTwainWnd ); nCurState = 2; } break; case( 2 ): { delete pMod; pMod = NULL; nCurState = 1; } break; default: { if( nEvent != TWAIN_EVENT_NONE ) aNotifyLink.Call( (void*) nEvent ); bFallback = FALSE; } break; } if( bFallback ) ImplFallback( nEvent ); return 0L; } // ----------------------------------------------------------------------------- IMPL_LINK( ImpTwain, ImplDestroyHdl, void*, p ) { #ifdef OS2 if( hWndTwain ) WinDestroyWindow( hWndTwain ); // unset hook #else if( hTwainWnd ) DestroyWindow( hTwainWnd ); if( hTwainHook ) UnhookWindowsHookEx( hTwainHook ); #endif delete this; pImpTwainInstance = NULL; return 0L; }