bool CIDataObject::GetData ( const wxDataFormat& rFormat,
char* pzBuffer,
ULONG ulLen )
{
QueryGetData(rFormat);
if (rFormat.GetType() == wxDF_INVALID)
return false;
ULONG ulSize = m_pDataObject->GetDataSize(rFormat);
if (ulSize == 0)
{
//
// It probably means that the method is just not implemented
//
return false;
}
if (rFormat.GetType() == wxDF_PRIVATE)
{
//
// For custom formats, put the size with the data - alloc the
// space for it
//
ulSize += sizeof(ULONG);
}
if (ulSize > ulLen) // not enough room to copy
return false;
//
// Copy the data
//
GetDataHere( rFormat
,pzBuffer
,ulSize
);
return true;
} // end of CIDataObject::GetData
bool wxBitmapDataObject::GetDataHere(void *buf) const
{
return GetDataHere(GetPreferredFormat(), buf);
}
void wxDataObject::AddToPasteboard( void * pb, int itemID )
{
PasteboardRef pasteboard = (PasteboardRef) pb;
// get formats from wxDataObjects
wxDataFormat *array = new wxDataFormat[ GetFormatCount() ];
GetAllFormats( array );
for (size_t i = 0; i < GetFormatCount(); i++)
{
wxDataFormat thisFormat = array[ i ];
// add four bytes at the end for data objs like text that
// have a datasize = strlen but still need a buffer for the
// string including trailing zero
size_t datasize = GetDataSize( thisFormat );
size_t sz = datasize + 4;
void* buf = malloc( sz );
if ( buf != NULL )
{
// empty the buffer because in some case GetDataHere does not fill buf
memset( buf, 0, sz );
if ( GetDataHere( array[ i ], buf ) )
{
int counter = 1 ;
if ( thisFormat.GetType() == wxDF_FILENAME )
{
// the data is D-normalized UTF8 strings of filenames delimited with \n
char *fname = strtok((char*) buf,"\n");
while (fname != NULL)
{
// translate the filepath into a fileurl and put that into the pasteobard
CFStringRef path = CFStringCreateWithBytes(NULL,(UInt8*)fname,strlen(fname),kCFStringEncodingUTF8,false);
CFURLRef url = CFURLCreateWithFileSystemPath(NULL, path , kCFURLPOSIXPathStyle, false);
CFRelease(path);
CFDataRef data = CFURLCreateData(NULL,url,kCFStringEncodingUTF8,true);
CFRelease(url);
PasteboardPutItemFlavor( pasteboard, (PasteboardItemID) counter,
(CFStringRef) thisFormat.GetFormatId() , data, kPasteboardFlavorNoFlags);
CFRelease( data );
counter++;
fname = strtok (NULL,"\n");
}
}
else
{
CFDataRef data = CFDataCreate( kCFAllocatorDefault, (UInt8*)buf, datasize );
if ( thisFormat.GetType() == wxDF_TEXT )
PasteboardPutItemFlavor( pasteboard, (PasteboardItemID) itemID,
CFSTR("com.apple.traditional-mac-plain-text") , data, kPasteboardFlavorNoFlags);
else
PasteboardPutItemFlavor( pasteboard, (PasteboardItemID) itemID,
(CFStringRef) thisFormat.GetFormatId() , data, kPasteboardFlavorNoFlags);
CFRelease( data );
}
}
free( buf );
}
}
delete [] array;
}
// get data functions
STDMETHODIMP wxIDataObject::GetData(FORMATETC *pformatetcIn, STGMEDIUM *pmedium)
{
wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::GetData"));
// is data is in our format?
HRESULT hr = QueryGetData(pformatetcIn);
if ( FAILED(hr) )
return hr;
// for the bitmaps and metafiles we use the handles instead of global memory
// to pass the data
wxDataFormat format = (wxDataFormat::NativeFormat)pformatetcIn->cfFormat;
format = HtmlFormatFixup(format);
// is this system data?
if ( GetSystemData(format, pmedium) )
{
// pmedium is already filled with corresponding data, so we're ready.
return S_OK;
}
switch ( format )
{
case wxDF_BITMAP:
pmedium->tymed = TYMED_GDI;
break;
case wxDF_ENHMETAFILE:
pmedium->tymed = TYMED_ENHMF;
break;
#ifndef __WXWINCE__
case wxDF_METAFILE:
pmedium->hGlobal = GlobalAlloc(GMEM_MOVEABLE | GMEM_SHARE,
sizeof(METAFILEPICT));
if ( !pmedium->hGlobal ) {
wxLogLastError(wxT("GlobalAlloc"));
return E_OUTOFMEMORY;
}
pmedium->tymed = TYMED_MFPICT;
break;
#endif
default:
// alloc memory
size_t size = m_pDataObject->GetDataSize(format);
if ( !size ) {
// it probably means that the method is just not implemented
wxLogDebug(wxT("Invalid data size - can't be 0"));
return DV_E_FORMATETC;
}
// we may need extra space for the buffer size
size += m_pDataObject->GetBufferOffset( format );
HGLOBAL hGlobal = GlobalAlloc(GMEM_MOVEABLE | GMEM_SHARE, size);
if ( hGlobal == NULL ) {
wxLogLastError(wxT("GlobalAlloc"));
return E_OUTOFMEMORY;
}
// copy data
pmedium->tymed = TYMED_HGLOBAL;
pmedium->hGlobal = hGlobal;
}
pmedium->pUnkForRelease = NULL;
// do copy the data
hr = GetDataHere(pformatetcIn, pmedium);
if ( FAILED(hr) ) {
// free resources we allocated
if ( pmedium->tymed & (TYMED_HGLOBAL | TYMED_MFPICT) ) {
GlobalFree(pmedium->hGlobal);
}
return hr;
}
return S_OK;
}
