bool wxClipboard::GetData( wxDataObject& data )
{
if ( IsUsingPrimarySelection() )
return false;
wxCHECK_MSG( m_open, false, wxT("clipboard not open") );
size_t formatcount = data.GetFormatCount() + 1;
wxDataFormat *array = new wxDataFormat[ formatcount ];
array[0] = data.GetPreferredFormat();
data.GetAllFormats( &array[1] );
bool transferred = false;
if ( m_data )
{
for (size_t i = 0; !transferred && i < formatcount; i++)
{
wxDataFormat format = array[ i ];
if ( m_data->IsSupported( format ) )
{
int dataSize = m_data->GetDataSize( format );
transferred = true;
if (dataSize == 0)
{
data.SetData( format, 0, 0 );
}
else
{
char *d = new char[ dataSize ];
m_data->GetDataHere( format, (void*)d );
data.SetData( format, dataSize, d );
delete [] d;
}
}
}
}
// get formats from wxDataObjects
if ( !transferred )
{
transferred = data.GetFromPasteboard( m_pasteboard ) ;
}
delete [] array;
return transferred;
}
// get the data for a specific wxDataFormat that stored as a property in Root window
void GetClipboardData(Display* disp, Window win, wxDataObject &data, wxDataFormat dfFormat)
{
unsigned char *clipbrdData = NULL;
// some variables that used to get the data in window property
unsigned long len;
switch ( dfFormat )
{
case wxDF_INVALID:
{
return;
}
case wxDF_BITMAP:
{
wxVector<Atom> atomVector;
atomVector.push_back(XA_IMAGE_BMP);
atomVector.push_back(XA_IMAGE_JPG);
atomVector.push_back(XA_IMAGE_TIFF);
atomVector.push_back(XA_IMAGE_PNG);
// check the four atoms in clipboard, try to find whether there has data
// stored in one of these atom.
for ( unsigned i = 0; i < atomVector.size(); i++ )
{
clipbrdData = GetClipboardDataByFormat(disp, win, XA_CLIPBOARD,
atomVector.at(i), &len);
if ( clipbrdData != NULL )
break;
}
// if we got any data, copy it.
if ( clipbrdData )
{
data.SetData(dfFormat, len, (char*)clipbrdData);
}
break;
}
default:
{
clipbrdData = GetClipboardDataByFormat(disp, win, XA_CLIPBOARD, XA_UTF8_STRING, &len);
// if we got any data, copy it.
if ( clipbrdData )
{
data.SetData(dfFormat, len, (char*)clipbrdData);
}
}
}
}
void CIDataObject::SetData (
const wxDataFormat& rFormat
, char* pzBuffer
)
{
ULONG ulSize = 0;
switch (rFormat.GetType())
{
case wxDF_TEXT:
case wxDF_OEMTEXT:
case wxDF_FILENAME:
case wxDF_HTML:
ulSize = strlen((const char *)pzBuffer);
break;
#if wxUSE_UNICODE
case wxDF_UNICODETEXT:
ulSize = ::wcslen((const wchar_t *)pzBuffer);
break;
#endif
case wxDF_BITMAP:
case wxDF_METAFILE:
case wxDF_ENHMETAFILE:
case wxDF_TIFF:
case wxDF_DIB:
ulSize = 0; // pass via a handle
break;
case wxDF_SYLK:
case wxDF_DIF:
case wxDF_PALETTE:
case wxDF_PENDATA:
case wxDF_RIFF:
case wxDF_WAVE:
case wxDF_LOCALE:
//PUNT
break;
case wxDF_PRIVATE:
size_t* p = (size_t *)pzBuffer;
ulSize = *p++;
pzBuffer = (char*)p;
break;
}
m_pDataObject->SetData( rFormat
,ulSize
,(void*)pzBuffer
);
} // end of CIDataObject::SetData
bool wxClipboard::GetData( wxDataObject& data )
{
wxCHECK_MSG( m_open, false, "clipboard not open" );
Display* xdisplay = wxGlobalDisplay();
Window xwindow = XtWindow( (Widget)wxTheApp->GetTopLevelRealizedWidget() );
Time timestamp = XtLastTimestampProcessed( xdisplay );
wxDataFormat chosenFormat;
int retval;
///////////////////////////////////////////////////////////////////////////
// determine if the cliboard holds any format we like
///////////////////////////////////////////////////////////////////////////
while( ( retval = XmClipboardStartRetrieve( xdisplay, xwindow,
timestamp ) )
== XmClipboardLocked );
if( retval != XmClipboardSuccess )
return false;
wxClipboardEndRetrieve endRetrieve( xdisplay, xwindow );
int count;
unsigned long max_name_length;
size_t dfcount = data.GetFormatCount( wxDataObject::Set );
wxDataFormatScopedArray dfarr(dfcount);
data.GetAllFormats( dfarr.get(), wxDataObject::Set );
if( XmClipboardInquireCount( xdisplay, xwindow, &count, &max_name_length )
== XmClipboardSuccess )
{
wxCharBuffer buf( max_name_length + 1 );
unsigned long copied;
for( int i = 0; i < count; ++i )
{
if( XmClipboardInquireFormat( xdisplay, xwindow, i + 1,
(XtPointer)buf.data(),
max_name_length, &copied )
!= XmClipboardSuccess )
continue;
buf.data()[copied] = '\0';
// try preferred format
if( buf == data.GetPreferredFormat( wxDataObject::Set ).GetId() )
{
chosenFormat = data.GetPreferredFormat( wxDataObject::Set );
break;
}
// try all other formats
for( size_t i = 0; i < dfcount; ++i )
{
if( buf == dfarr[i].GetId() )
chosenFormat = dfarr[i];
}
}
}
if( chosenFormat == wxDF_INVALID )
return false;
///////////////////////////////////////////////////////////////////////////
// now retrieve the data
///////////////////////////////////////////////////////////////////////////
unsigned long length, dummy1;
long dummy2;
wxString id = chosenFormat.GetId();
while( ( retval = XmClipboardInquireLength( xdisplay, xwindow,
id.char_str(),
&length ) )
== XmClipboardLocked );
if( retval != XmClipboardSuccess )
return false;
wxCharBuffer buf(length);
while( ( retval = XmClipboardRetrieve( xdisplay, xwindow,
id.char_str(),
(XtPointer)buf.data(),
length, &dummy1, &dummy2 ) )
== XmClipboardLocked );
if( retval != XmClipboardSuccess )
return false;
if( !data.SetData( chosenFormat, length, buf.data() ) )
return false;
return true;
}
// set data functions
STDMETHODIMP wxIDataObject::SetData(FORMATETC *pformatetc,
STGMEDIUM *pmedium,
BOOL fRelease)
{
wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::SetData"));
switch ( pmedium->tymed )
{
case TYMED_GDI:
m_pDataObject->SetData(wxDF_BITMAP, 0, &pmedium->hBitmap);
break;
case TYMED_ENHMF:
m_pDataObject->SetData(wxDF_ENHMETAFILE, 0, &pmedium->hEnhMetaFile);
break;
case TYMED_ISTREAM:
// check if this format is supported
if ( !m_pDataObject->IsSupported(pformatetc->cfFormat,
wxDataObject::Set) )
{
// As this is not a supported format (content data), assume it
// is system data and save it.
return SaveSystemData(pformatetc, pmedium, fRelease);
}
break;
case TYMED_MFPICT:
// fall through - we pass METAFILEPICT through HGLOBAL
case TYMED_HGLOBAL:
{
wxDataFormat format = pformatetc->cfFormat;
format = HtmlFormatFixup(format);
// check if this format is supported
if ( !m_pDataObject->IsSupported(format, wxDataObject::Set) ) {
// As above, assume that unsupported format must be system
// data and just save it.
return SaveSystemData(pformatetc, pmedium, fRelease);
}
// copy data
const void *pBuf = GlobalLock(pmedium->hGlobal);
if ( pBuf == NULL ) {
wxLogLastError(wxT("GlobalLock"));
return E_OUTOFMEMORY;
}
// we've got a problem with SetData() here because the base
// class version requires the size parameter which we don't
// have anywhere in OLE data transfer - so we need to
// synthetise it for known formats and we suppose that all data
// in custom formats starts with a DWORD containing the size
size_t size;
switch ( format )
{
case wxDF_HTML:
case CF_TEXT:
case CF_OEMTEXT:
size = strlen((const char *)pBuf);
break;
#if !(defined(__BORLANDC__) && (__BORLANDC__ < 0x500))
case CF_UNICODETEXT:
#if ( defined(__BORLANDC__) && (__BORLANDC__ > 0x530) )
size = std::wcslen((const wchar_t *)pBuf) * sizeof(wchar_t);
#else
size = wxWcslen((const wchar_t *)pBuf) * sizeof(wchar_t);
#endif
break;
#endif
case CF_BITMAP:
#ifndef __WXWINCE__
case CF_HDROP:
// these formats don't use size at all, anyhow (but
// pass data by handle, which is always a single DWORD)
size = 0;
break;
#endif
case CF_DIB:
// the handler will calculate size itself (it's too
// complicated to do it here)
size = 0;
break;
#ifndef __WXWINCE__
case CF_METAFILEPICT:
size = sizeof(METAFILEPICT);
break;
#endif
default:
pBuf = m_pDataObject->
GetSizeFromBuffer(pBuf, &size, format);
size -= m_pDataObject->GetBufferOffset(format);
}
bool ok = m_pDataObject->SetData(format, size, pBuf);
GlobalUnlock(pmedium->hGlobal);
if ( !ok ) {
return E_UNEXPECTED;
}
}
break;
default:
return DV_E_TYMED;
}
if ( fRelease ) {
// we own the medium, so we must release it - but do *not* free any
// data we pass by handle because we have copied it elsewhere
switch ( pmedium->tymed )
{
case TYMED_GDI:
pmedium->hBitmap = 0;
break;
case TYMED_MFPICT:
pmedium->hMetaFilePict = 0;
break;
case TYMED_ENHMF:
pmedium->hEnhMetaFile = 0;
break;
}
ReleaseStgMedium(pmedium);
}
return S_OK;
}