/** Opens a Data Source */
bool KSaneWidgetPrivate::OpenSource(const QString &source)
{
if (source.isEmpty()) {
return false;
}
QStringList splited = source.split(';');
if (splited.size() != 3) {
return false;
}
// go thorough the list and check if the source is available
bool ret_ok = CallTwainProc(&m_AppId, NULL, DG_CONTROL, DAT_IDENTITY, MSG_GETFIRST, &m_Source);
while (ret_ok) {
//qDebug() << m_Source.Id << m_Source.Version.MajorNum << m_Source.Version.MinorNum;
//qDebug() << m_Source.Manufacturer << m_Source.ProductFamily << m_Source.ProductName;
if (QString(m_Source.ProductName) == splited[0]) break;
ret_ok = CallTwainProc(&m_AppId, NULL, DG_CONTROL, DAT_IDENTITY, MSG_GETNEXT, &m_Source);
}
if (!ret_ok) {
// CallTwainProc failed when reading beyond the last source
return false;
}
// open the source
if (m_hTwainDLL && m_pDSMProc && m_bDSMOpen) {
m_bDSOpen = CallTwainProc(&m_AppId, NULL, DG_CONTROL, DAT_IDENTITY, MSG_OPENDS, (TW_MEMREF)&m_Source);
//qDebug() << "OpenSource(qst..) m_bDSOpen" << m_bDSOpen;
}
SetImageCount(TWCPP_ANYCOUNT);
return DSOpen();
}
/** Called to display a dialog box to select the Twain source to use.
This can be overridden if a list of all sources is available
to the application. These sources can be enumerated by Twain.
it is not yet supportted by KSaneWidgetPrivate.
*/
QString KSaneWidgetPrivate::SelectSource()
{
TW_IDENTITY src;
memset(&src, 0, sizeof(src));
// debug printouts
bool ret_ok = CallTwainProc(&m_AppId, NULL, DG_CONTROL, DAT_IDENTITY, MSG_GETFIRST, &src);
while (ret_ok) {
ret_ok = CallTwainProc(&m_AppId, NULL, DG_CONTROL, DAT_IDENTITY, MSG_GETNEXT, &src);
}
// set the default entry selected
CallTwainProc(&m_AppId, NULL, DG_CONTROL, DAT_IDENTITY, MSG_GETDEFAULT, &src);
// now open the selection dialog
if (!CallTwainProc(&m_AppId, NULL, DG_CONTROL, DAT_IDENTITY, MSG_USERSELECT, &src)) {
return QString();
}
QString source;
source += src.ProductName;
source += ';';
source += src.ProductFamily;
source += ';';
source += src.Manufacturer;
//qDebug()<< source;
return source;
}
/** Closes the Data Source
*/
void KSaneWidgetPrivate::CloseDS()
{
if(DSOpen()) {
if(m_bSourceEnabled) {
TW_USERINTERFACE twUI;
if(CallTwainProc(&m_AppId, &m_Source, DG_CONTROL,
DAT_USERINTERFACE, MSG_DISABLEDS, &twUI)) {
m_bSourceEnabled = false;
}
}
CallTwainProc(&m_AppId, NULL, DG_CONTROL,
DAT_IDENTITY, MSG_CLOSEDS, (TW_MEMREF)&m_Source);
m_bDSOpen = false;
}
}
/** Should be called from the main message loop of the application. Can always be called,
it will not process the message unless a scan is in progress. */
bool KSaneWidgetPrivate::ProcessMessage(MSG msg)
{
// TODO: don't really know why...
if (msg.message == 528) return false;
if (m_hMessageWnd == 0) return false;
if(m_bSourceEnabled) {
TW_UINT16 twRC = TWRC_NOTDSEVENT;
TW_EVENT twEvent;
twEvent.pEvent = (TW_MEMREF)&msg;
//memset(&twEvent, 0, sizeof(TW_EVENT));
twEvent.TWMessage = MSG_NULL;
CallTwainProc(&m_AppId, &m_Source, DG_CONTROL,
DAT_EVENT, MSG_PROCESSEVENT, (TW_MEMREF)&twEvent);
if(m_returnCode != TWRC_NOTDSEVENT) {
TranslateMessage(twEvent);
}
return (twRC==TWRC_DSEVENT);
}
return false;
}
/*
Calls TWAIN to actually get the image
*/
BOOL CTwain::GetImage(TW_IMAGEINFO& info)
{
HANDLE hBitmap;
CallTwainProc(&m_AppId,&m_Source,DG_IMAGE,DAT_IMAGENATIVEXFER,MSG_GET,&hBitmap);
switch(m_returnCode)
{
case TWRC_XFERDONE:
TRACE("********** GetImage --> TWRC_XFERDONE ************\n");
CopyImage(hBitmap,info);
break;
case TWRC_CANCEL:
TRACE("GetImage --> TWRC_CANCEL.\n");
break;
case TWRC_FAILURE:
TRACE("********** GetImage --> TWRC_FAILURE ************\n");
CancelTransfer();
return FALSE;
default:
TRACE("GetImage --> default.\n");
break;
}
GlobalFree(hBitmap);
TRACE("********** GetImage --> done ************\n");
return EndTransfer();
}
/** Calls TWAIN to actually get the image */
bool KSaneWidgetPrivate::GetImage(TW_IMAGEINFO& info)
{
TW_MEMREF pdata;
CallTwainProc(&m_AppId, &m_Source, DG_IMAGE, DAT_IMAGENATIVEXFER, MSG_GET, &pdata);
switch(m_returnCode)
{
case TWRC_XFERDONE:
//qDebug()<< "GetImage:TWRC_XFERDONE";
ImageData(pdata, info);
break;
case TWRC_CANCEL:
//qDebug()<< "GetImage:TWRC_CANCEL";
break;
case TWRC_FAILURE:
//qDebug()<< "GetImage:TWRC_FAILURE";
CancelTransfer();
return false;
break;
}
GlobalFree(pdata);
return EndTransfer();
}
/*
Initializes TWAIN interface . Is already called from the constructor.
It should be called again if ReleaseTwain is called.
hWnd is the window which has to subclassed in order to recieve
Twain messaged. Normally - this would be your main application window.
*/
BOOL CTwain::InitTwain(HWND hWnd)
{
char libName[512];
if(IsValidDriver())
{
return TRUE;
}
memset(&m_AppId,0,sizeof(m_AppId));
if(!IsWindow(hWnd))
{
return FALSE;
}
m_hMessageWnd = hWnd;
strcpy(libName,"TWAIN_32.DLL");
m_hTwainDLL = LoadLibrary(libName);
if(m_hTwainDLL != NULL)
{
if(!(m_pDSMProc = (DSMENTRYPROC)GetProcAddress(m_hTwainDLL,MAKEINTRESOURCE(1))))
{
FreeLibrary(m_hTwainDLL);
m_hTwainDLL = NULL;
}
}
if(IsValidDriver())
{
GetIdentity();
m_bDSMOpen= CallTwainProc(&m_AppId,NULL,DG_CONTROL,DAT_PARENT,MSG_OPENDSM,(TW_MEMREF)&m_hMessageWnd);
return TRUE;
}
else
{
return FALSE;
}
}
/** Should be called from the main message loop of the application. Can always be called,
it will not process the message unless a scan is in progress.
*/
bool TwainIface::ProcessMessage(MSG msg)
{
if(SourceEnabled())
{
TW_UINT16 twRC = TWRC_NOTDSEVENT;
TW_EVENT twEvent;
twEvent.pEvent = (TW_MEMREF)&msg;
//memset(&twEvent, 0, sizeof(TW_EVENT));
twEvent.TWMessage = MSG_NULL;
CallTwainProc(&m_AppId, &m_Source, DG_CONTROL,
DAT_EVENT, MSG_PROCESSEVENT, (TW_MEMREF)&twEvent);
if(GetRC() != TWRC_NOTDSEVENT)
{
TranslateMessage(twEvent);
}
return (twRC==TWRC_DSEVENT);
}
return false;
}
/** Sets the capability of the Twain Data Source */
bool KSaneWidgetPrivate::SetCapability(TW_CAPABILITY& cap)
{
if(DSOpen()) {
return CallTwainProc(&m_AppId, &m_Source, DG_CONTROL,
DAT_CAPABILITY, MSG_SET, (TW_MEMREF)&cap);
}
return false;
}
/*
Sets the capability of the Twain Data Source
*/
BOOL CTwain::SetCapability(TW_CAPABILITY& cap)
{
if(DSOpen())
{
return CallTwainProc(&m_AppId,&m_Source,DG_CONTROL,DAT_CAPABILITY,MSG_SET,(TW_MEMREF)&cap);
}
return FALSE;
}
/*
Gets Imageinfo for an image which is about to be transferred.
*/
BOOL CTwain::GetImageInfo(TW_IMAGEINFO& info)
{
if(SourceEnabled())
{
return CallTwainProc(&m_AppId,&m_Source,DG_IMAGE,DAT_IMAGEINFO,MSG_GET,(TW_MEMREF)&info);
}
return FALSE;
}
/** Gets Imageinfo for an image which is about to be transferred. */
bool KSaneWidgetPrivate::GetImageInfo(TW_IMAGEINFO& info)
{
if(m_bSourceEnabled) {
return CallTwainProc(&m_AppId, &m_Source, DG_IMAGE,
DAT_IMAGEINFO, MSG_GET, (TW_MEMREF)&info);
}
return false;
}
/** Closes the Data Source Manager */
void KSaneWidgetPrivate::CloseDSM()
{
if(m_hTwainDLL && m_pDSMProc && m_bDSMOpen) {
CloseDS();
CallTwainProc(&m_AppId, NULL, DG_CONTROL, DAT_PARENT, MSG_CLOSEDSM, (TW_MEMREF)&m_hMessageWnd);
m_bDSMOpen = false;
}
}
/*
Closes the Data Source
*/
void CTwain::CloseDS()
{
if(DSOpen())
{
DisableSource();
CallTwainProc(&m_AppId,NULL,DG_CONTROL,DAT_IDENTITY,MSG_CLOSEDS,(TW_MEMREF)&m_Source);
m_bDSOpen = FALSE;
}
}
/** Gets Imageinfo for an image which is about to be transferred.
*/
bool TwainIface::GetImageInfo(TW_IMAGEINFO& info)
{
if(SourceEnabled())
{
return CallTwainProc(&m_AppId, &m_Source, DG_IMAGE,
DAT_IMAGEINFO, MSG_GET, (TW_MEMREF)&info);
}
return false;
}
/*
Closes the Data Source Manager
*/
void CTwain::CloseDSM()
{
if(DSMOpen())
{
CloseDS();
CallTwainProc(&m_AppId,NULL,DG_CONTROL,DAT_PARENT,MSG_CLOSEDSM,(TW_MEMREF)&m_hMessageWnd);
m_bDSMOpen = FALSE;
}
}
/*
Ends the current transfer.
Returns TRUE if the more images are pending
*/
BOOL CTwain::EndTransfer()
{
TW_PENDINGXFERS twPend;
if(CallTwainProc(&m_AppId,&m_Source,DG_CONTROL,DAT_PENDINGXFERS,MSG_ENDXFER,(TW_MEMREF)&twPend))
{
return twPend.Count != 0;
}
return FALSE;
}
/** Ends the current transfer.
Returns true if the more images are pending */
bool KSaneWidgetPrivate::EndTransfer()
{
TW_PENDINGXFERS twPend;
if(CallTwainProc(&m_AppId, &m_Source, DG_CONTROL,
DAT_PENDINGXFERS, MSG_ENDXFER, (TW_MEMREF)&twPend))
{
return twPend.Count != 0;
}
return false;
}
/*
Should be called from the main message loop of the application. Can always be called,
it will not process the message unless a scan is in progress.
*/
BOOL CTwain::ProcessMessage(MSG msg)
{
if(SourceEnabled())
{
#if 1
TW_UINT16 twRC = TWRC_NOTDSEVENT;
TW_EVENT twEvent;
memset(&twEvent, 0, sizeof(TW_EVENT));
// twEvent.TWMessage = MSG_NULL;
twEvent.pEvent = (TW_MEMREF)&msg;
twRC = CallDSMEntry(&m_AppId,&m_Source,DG_CONTROL,DAT_EVENT,MSG_PROCESSEVENT,(TW_MEMREF)&twEvent);
// if (twRC != TWRC_DSEVENT)
// return FALSE;
// CallTwainProc(&m_AppId,&m_Source,DG_CONTROL,DAT_EVENT,MSG_PROCESSEVENT,(TW_MEMREF)&twEvent);
// if(GetRC() != TWRC_NOTDSEVENT)
// {
if (!_bTwainContinue)
{
twEvent.TWMessage = MSG_CLOSEDSREQ;
}
TranslateMessage(twEvent);
// }
// tell the caller what happened
return (twRC == TWRC_DSEVENT); // returns TRUE or FALSE
// return TRUE;
#else
TW_EVENT twEvent;
twEvent.pEvent = (TW_MEMREF)&msg;
twEvent.TWMessage = MSG_NULL;
CallTwainProc(&m_AppId,&m_Source,DG_CONTROL,DAT_EVENT,MSG_PROCESSEVENT,(TW_MEMREF)&twEvent);
if(GetRC() != TWRC_NOTDSEVENT)
{
TRACE("********** ProcessMessage ************\n");
TranslateMessage(twEvent);
}
return FALSE;
#endif
}
else
{
// TRACE("********** ProcessMessage SourceEnabled = false ************\n");
}
return FALSE;
}
/*
Called to disable the source.
*/
BOOL CTwain::DisableSource()
{
if(SourceEnabled())
{
if(CallTwainProc(&m_AppId,&m_Source,DG_CONTROL,DAT_USERINTERFACE,MSG_DISABLEDS,&twUI))
{
m_bSourceEnabled = FALSE;
return TRUE;
}
}
return FALSE;
}
/** Initializes TWAIN interface . Is already called from the constructor.
It should be called again if ReleaseTwain is called.
hWnd is the window which has to subclassed in order to receive
Twain messaged. Normally - this would be your main application window.
*/
bool KSaneWidgetPrivate::InitTwain()
{
char libName[512];
if((m_hTwainDLL && m_pDSMProc)) {
return true;
}
memset(&m_AppId,0,sizeof(m_AppId));
if(!IsWindow(this->winId())) {
return false;
}
m_hMessageWnd = this->winId();
strcpy(libName, "TWAIN_32.DLL");
m_hTwainDLL = LoadLibraryA(libName);
if(m_hTwainDLL != NULL)
{
if(!(m_pDSMProc = (DSMENTRYPROC)GetProcAddress(m_hTwainDLL, (LPCSTR)MAKEINTRESOURCE(1))))
{
FreeLibrary(m_hTwainDLL);
m_hTwainDLL = NULL;
}
}
if((m_hTwainDLL && m_pDSMProc))
{
// Expects all the fields in m_AppId to be set except for the id field.
m_AppId.Id = 0; // Initialize to 0 (Source Manager will assign real value)
m_AppId.Version.MajorNum = 0; // Your app's version number
m_AppId.Version.MinorNum = 2;
m_AppId.Version.Language = TWLG_USA;
m_AppId.Version.Country = TWCY_USA;
strcpy(m_AppId.Version.Info, "libksane");
m_AppId.ProtocolMajor = TWON_PROTOCOLMAJOR;
m_AppId.ProtocolMinor = TWON_PROTOCOLMINOR;
m_AppId.SupportedGroups = DG_IMAGE | DG_CONTROL;
strcpy(m_AppId.Manufacturer, "KDE");
strcpy(m_AppId.ProductFamily, "Generic");
strcpy(m_AppId.ProductName, "libksane");
m_bDSMOpen= CallTwainProc(&m_AppId, NULL, DG_CONTROL,
DAT_PARENT, MSG_OPENDSM, (TW_MEMREF)&m_hMessageWnd);
return true;
}
else {
return false;
}
}
/*
Called to display a dialog box to select the Twain source to use.
This can be overridden if a list of all sources is available
to the application. These sources can be enumerated by Twain.
it is not yet supportted by CTwain.
*/
BOOL CTwain::SelectSource()
{
memset(&m_Source,0,sizeof(m_Source));
if(!SourceSelected())
{
SelectDefaultSource();
}
if(CallTwainProc(&m_AppId,NULL,DG_CONTROL,DAT_IDENTITY,MSG_USERSELECT,&m_Source))
{
m_bSourceSelected = TRUE;
}
return m_bSourceSelected;
}
/** Called to disable the source.
*/
bool TwainIface::DisableSource()
{
if(SourceEnabled())
{
TW_USERINTERFACE twUI;
if(CallTwainProc(&m_AppId, &m_Source, DG_CONTROL,
DAT_USERINTERFACE, MSG_DISABLEDS, &twUI))
{
m_bSourceEnabled = false;
return true;
}
}
return false;
}
/*
Queries the capability of the Twain Data Source
*/
BOOL CTwain::GetCapability(TW_CAPABILITY& twCap,TW_UINT16 cap,TW_UINT16 conType)
{
if(DSOpen())
{
twCap.Cap = cap;
twCap.ConType = conType;
twCap.hContainer = NULL;
if(CallTwainProc(&m_AppId,&m_Source,DG_CONTROL,DAT_CAPABILITY,MSG_GET,(TW_MEMREF)&twCap))
{
return TRUE;
}
}
return FALSE;
}
/** Queries the capability of the Twain Data Source */
bool KSaneWidgetPrivate::GetCapability(TW_CAPABILITY& twCap, TW_UINT16 cap, TW_UINT16 conType)
{
if(DSOpen())
{
twCap.Cap = cap;
twCap.ConType = conType;
twCap.hContainer = NULL;
if(CallTwainProc(&m_AppId, &m_Source, DG_CONTROL,
DAT_CAPABILITY, MSG_GET, (TW_MEMREF)&twCap))
{
return true;
}
}
return false;
}
/*
Opens a Data Source supplied as the input parameter
*/
BOOL CTwain::OpenSource(TW_IDENTITY *pSource)
{
if(pSource)
{
m_Source = *pSource;
}
if(DSMOpen())
{
if(!SourceSelected())
{
SelectDefaultSource();
}
m_bDSOpen = CallTwainProc(&m_AppId,NULL,DG_CONTROL,DAT_IDENTITY,MSG_OPENDS,(TW_MEMREF)&m_Source);
}
return DSOpen();
}
/*
Ends the current transfer.
Returns TRUE if the more images are pending
*/
BOOL CTwain::EndTransfer()
{
TW_PENDINGXFERS twPend;
if(CallTwainProc(&m_AppId,&m_Source,DG_CONTROL,DAT_PENDINGXFERS,MSG_ENDXFER,(TW_MEMREF)&twPend))
{
if (twPend.Count == 0)
{
DisableSource();
_bHasNextPic = FALSE;
}
else
_bHasNextPic = TRUE;
TRACE("********** EndTransfer --> twPend.Count = %d ************\n", twPend.Count);
return twPend.Count != 0;
}
return FALSE;
}
/*
Should be called from the main message loop of the application. Can always be called,
it will not process the message unless a scan is in progress.
*/
BOOL CTwain::ProcessMessage(MSG msg)
{
if(SourceEnabled())
{
TW_EVENT twEvent;
twEvent.pEvent = (TW_MEMREF)&msg;
twEvent.TWMessage = MSG_NULL;
CallTwainProc(&m_AppId,&m_Source,DG_CONTROL,DAT_EVENT,MSG_PROCESSEVENT,(TW_MEMREF)&twEvent);
if(GetRC() != TWRC_NOTDSEVENT)
{
TranslateMessage(twEvent);
}
return FALSE;
}
return FALSE;
}
/*
Calls TWAIN to actually get the image
*/
BOOL CTwain::GetImage(TW_IMAGEINFO& info)
{
HANDLE hBitmap;
CallTwainProc(&m_AppId,&m_Source,DG_IMAGE,DAT_IMAGENATIVEXFER,MSG_GET,&hBitmap);
switch(m_returnCode)
{
case TWRC_XFERDONE:
CopyImage(hBitmap,info);
break;
case TWRC_CANCEL:
break;
case TWRC_FAILURE:
CancelTransfer();
return FALSE;
}
GlobalFree(hBitmap);
return EndTransfer();
}
/*
Called to enable the Twain Acquire Dialog. This too can be
overridden but is a helluva job .
*/
BOOL CTwain::EnableSource(BOOL showUI)
{
if(DSOpen() && !SourceEnabled())
{
twUI.ShowUI = showUI; //FALSE
twUI.hParent = (TW_HANDLE)m_hMessageWnd;
if(CallTwainProc(&m_AppId,&m_Source,DG_CONTROL,DAT_USERINTERFACE,MSG_ENABLEDS,(TW_MEMREF)&twUI))
{
m_bSourceEnabled = TRUE;
m_bModalUI = twUI.ModalUI;
}
else
{
m_bSourceEnabled = FALSE;
m_bModalUI = TRUE;
}
return m_bSourceEnabled;
}
return FALSE;
}
