static const wxChar *GetTymedName(DWORD tymed);
#endif // Debug
+// to be moved into wx/msw/bitmap.h
+extern size_t wxConvertBitmapToDIB(BITMAPINFO *pbi, const wxBitmap& bitmap);
+extern wxBitmap wxConvertDIBToBitmap(const BITMAPINFO *bmi);
+
// ----------------------------------------------------------------------------
// wxIEnumFORMATETC interface implementation
// ----------------------------------------------------------------------------
return DV_E_FORMATETC;
}
+ if ( !format.IsStandard() ) {
+ // for custom formats, put the size with the data - alloc the
+ // space for it
+ size += sizeof(size_t);
+ }
+
HGLOBAL hGlobal = GlobalAlloc(GMEM_MOVEABLE | GMEM_SHARE, size);
if ( hGlobal == NULL ) {
wxLogLastError("GlobalAlloc");
case TYMED_HGLOBAL:
{
// copy data
- void *pBuf = GlobalLock(pmedium->hGlobal);
+ HGLOBAL hGlobal = pmedium->hGlobal;
+ void *pBuf = GlobalLock(hGlobal);
if ( pBuf == NULL ) {
wxLogLastError(wxT("GlobalLock"));
return E_OUTOFMEMORY;
}
- wxDataFormat format = (wxDataFormatId)pformatetc->cfFormat;
+ if ( !wxDataFormat(pformatetc->cfFormat).IsStandard() ) {
+ // for custom formats, put the size with the data
+ size_t *p = (size_t *)pBuf;
+ *p++ = GlobalSize(hGlobal);
+ pBuf = p;
+ }
+
+ wxDataFormat format = pformatetc->cfFormat;
if ( !m_pDataObject->GetDataHere(format, pBuf) )
return E_UNEXPECTED;
- GlobalUnlock(pmedium->hGlobal);
+ GlobalUnlock(hGlobal);
}
break;
return S_OK;
}
-// set data functions (not implemented)
+// set data functions
STDMETHODIMP wxIDataObject::SetData(FORMATETC *pformatetc,
STGMEDIUM *pmedium,
BOOL fRelease)
switch ( pmedium->tymed )
{
case TYMED_GDI:
- m_pDataObject->SetData(wxDF_BITMAP, &pmedium->hBitmap);
+ m_pDataObject->SetData(wxDF_BITMAP, 0, &pmedium->hBitmap);
break;
case TYMED_MFPICT:
return E_OUTOFMEMORY;
}
- wxDataFormat format = (wxDataFormatId)pformatetc->cfFormat;
- m_pDataObject->SetData(format, pBuf);
+ // 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 ( pformatetc->cfFormat )
+ {
+ case CF_TEXT:
+ case CF_OEMTEXT:
+ size = strlen((const char *)pBuf);
+ break;
+
+ case CF_UNICODETEXT:
+ size = wcslen((const wchar_t *)pBuf);
+ break;
+
+ case CF_BITMAP:
+ 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;
+
+ default:
+ {
+ // we suppose that the size precedes the data
+ size_t *p = (size_t *)pBuf;
+ size = *p++;
+ pBuf = p;
+ }
+ }
+
+ wxDataFormat format = pformatetc->cfFormat;
+ bool ok = m_pDataObject->SetData(format, size, pBuf);
GlobalUnlock(pmedium->hGlobal);
+
+ if ( !ok ) {
+ return E_UNEXPECTED;
+ }
}
break;
}
// and now check the type of data requested
- wxDataFormat format = (wxDataFormatId)pformatetc->cfFormat;
+ wxDataFormat format = pformatetc->cfFormat;
if ( m_pDataObject->IsSupportedFormat(format) ) {
#ifdef __WXDEBUG__
wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::QueryGetData: %s ok"),
#endif // Debug
}
else {
-#ifdef __WXDEBUG__
wxLogTrace(wxTRACE_OleCalls,
wxT("wxIDataObject::QueryGetData: %s unsupported"),
wxDataObject::GetFormatName(format));
-#endif
+
return DV_E_FORMATETC;
}
return DATA_S_SAMEFORMATETC;
}
-STDMETHODIMP wxIDataObject::EnumFormatEtc(DWORD dwDirection,
+STDMETHODIMP wxIDataObject::EnumFormatEtc(DWORD dwDir,
IEnumFORMATETC **ppenumFormatEtc)
{
wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::EnumFormatEtc"));
- bool allowOutputOnly = dwDirection == DATADIR_GET;
+ wxDataObject::Direction dir = dwDir == DATADIR_GET ? wxDataObject::Get
+ : wxDataObject::Set;
- size_t nFormatCount = m_pDataObject->GetFormatCount(allowOutputOnly);
+ size_t nFormatCount = m_pDataObject->GetFormatCount(dir);
wxDataFormat format, *formats;
- if ( nFormatCount == 1 ) {
- // this is the most common case, this is why we consider it separately
- formats = &format;
- format = m_pDataObject->GetPreferredFormat();
- }
- else {
- // bad luck, build the array with all formats
- formats = new wxDataFormat[nFormatCount];
- m_pDataObject->GetAllFormats(formats, allowOutputOnly);
- }
+ formats = nFormatCount == 1 ? &format : new wxDataFormat[nFormatCount];
+ m_pDataObject->GetAllFormats(formats, dir);
wxIEnumFORMATETC *pEnum = new wxIEnumFORMATETC(formats, nFormatCount);
pEnum->AddRef();
return S_OK;
}
+// ----------------------------------------------------------------------------
// advise sink functions (not implemented)
+// ----------------------------------------------------------------------------
+
STDMETHODIMP wxIDataObject::DAdvise(FORMATETC *pformatetc,
DWORD advf,
IAdviseSink *pAdvSink,
}
}
-#ifdef __WXDEBUG__
const char *wxDataObject::GetFormatName(wxDataFormat format)
{
// case 'xxx' is not a valid value for switch of enum 'wxDataFormat'
#pragma warning(default:4063)
#endif // VC++
}
-#endif // Debug
// ----------------------------------------------------------------------------
-// wxPrivateDataObject
+// wxBitmapDataObject supports CF_DIB format
// ----------------------------------------------------------------------------
-wxPrivateDataObject::wxPrivateDataObject()
+size_t wxBitmapDataObject::GetDataSize() const
{
- m_size = 0;
- m_data = NULL;
+ return wxConvertBitmapToDIB(NULL, GetBitmap());
}
-void wxPrivateDataObject::Free()
+bool wxBitmapDataObject::GetDataHere(void *buf) const
{
- if ( m_data )
- free(m_data);
+ return wxConvertBitmapToDIB((BITMAPINFO *)buf, GetBitmap()) != 0;
}
-void wxPrivateDataObject::SetData( const void *data, size_t size )
+bool wxBitmapDataObject::SetData(size_t len, const void *buf)
{
- Free();
+ wxBitmap bitmap(wxConvertDIBToBitmap((const BITMAPINFO *)buf));
- m_size = size;
- m_data = malloc(size);
+ if ( !bitmap.Ok() ) {
+ wxFAIL_MSG(wxT("pasting/dropping invalid bitmap"));
- memcpy( m_data, data, size );
+ return FALSE;
+ }
+
+ SetBitmap(bitmap);
+
+ return TRUE;
}
-void wxPrivateDataObject::WriteData( void *dest ) const
+// ----------------------------------------------------------------------------
+// wxBitmapDataObject2 supports CF_BITMAP format
+// ----------------------------------------------------------------------------
+
+// the bitmaps aren't passed by value as other types of data (i.e. by copying
+// the data into a global memory chunk and passing it to the clipboard or
+// another application or whatever), but by handle, so these generic functions
+// don't make much sense to them.
+
+size_t wxBitmapDataObject2::GetDataSize() const
{
- WriteData( m_data, dest );
+ return 0;
}
-size_t wxPrivateDataObject::GetSize() const
+bool wxBitmapDataObject2::GetDataHere(void *pBuf) const
{
- return m_size;
+ // we put a bitmap handle into pBuf
+ *(WXHBITMAP *)pBuf = GetBitmap().GetHBITMAP();
+
+ return TRUE;
}
-void wxPrivateDataObject::WriteData( const void *data, void *dest ) const
+bool wxBitmapDataObject2::SetData(size_t len, const void *pBuf)
{
- memcpy( dest, data, GetSize() );
-}
+ HBITMAP hbmp = *(HBITMAP *)pBuf;
-// ----------------------------------------------------------------------------
-// wxBitmapDataObject: it supports standard CF_BITMAP and CF_DIB formats
-// ----------------------------------------------------------------------------
+ BITMAP bmp;
+ if ( !GetObject(hbmp, sizeof(BITMAP), &bmp) )
+ {
+ wxLogLastError("GetObject(HBITMAP)");
+ }
-size_t wxBitmapDataObject::GetFormatCount(bool outputOnlyToo) const
-{
- return 2;
-}
+ wxBitmap bitmap(bmp.bmWidth, bmp.bmHeight, bmp.bmPlanes);
+ bitmap.SetHBITMAP((WXHBITMAP)hbmp);
-void wxBitmapDataObject::GetAllFormats(wxDataFormat *formats,
- bool outputOnlyToo) const
-{
- formats[0] = CF_BITMAP;
- formats[1] = CF_DIB;
+ if ( !bitmap.Ok() ) {
+ wxFAIL_MSG(wxT("pasting/dropping invalid bitmap"));
+
+ return FALSE;
+ }
+
+ SetBitmap(bitmap);
+
+ return TRUE;
}
-// the bitmaps aren't passed by value as other types of data (i.e. by copyign
-// the data into a global memory chunk and passing it to the clipboard or
-// another application or whatever), but by handle, so these generic functions
-// don't make much sense to them.
+#if 0
size_t wxBitmapDataObject::GetDataSize(const wxDataFormat& format) const
{
return TRUE;
}
-bool wxBitmapDataObject::SetData(const wxDataFormat& format, const void *pBuf)
+bool wxBitmapDataObject::SetData(const wxDataFormat& format,
+ size_t size, const void *pBuf)
{
HBITMAP hbmp;
if ( format.GetFormatId() == CF_DIB )
return TRUE;
}
+#endif // 0
+
+// ----------------------------------------------------------------------------
+// wxFileDataObject
+// ----------------------------------------------------------------------------
+
+bool wxFileDataObject::SetData(size_t WXUNUSED(size), const void *pData)
+{
+ m_filenames.Empty();
+
+ // the documentation states that the first member of DROPFILES structure is
+ // a "DWORD offset of double NUL terminated file list". What they mean by
+ // this (I wonder if you see it immediately) is that the list starts at
+ // ((char *)&(pDropFiles.pFiles)) + pDropFiles.pFiles. We're also advised
+ // to use DragQueryFile to work with this structure, but not told where and
+ // how to get HDROP.
+ HDROP hdrop = (HDROP)pData; // NB: it works, but I'm not sure about it
+
+ // get number of files (magic value -1)
+ UINT nFiles = ::DragQueryFile(hdrop, (unsigned)-1, NULL, 0u);
+
+ // for each file get the length, allocate memory and then get the name
+ wxString str;
+ UINT len, n;
+ for ( n = 0; n < nFiles; n++ ) {
+ // +1 for terminating NUL
+ len = ::DragQueryFile(hdrop, n, NULL, 0) + 1;
+
+ UINT len2 = ::DragQueryFile(hdrop, n, str.GetWriteBuf(len), len);
+ str.UngetWriteBuf();
+ m_filenames.Add(str);
+
+ if ( len2 != len - 1 ) {
+ wxLogDebug(wxT("In wxFileDropTarget::OnDrop DragQueryFile returned"
+ " %d characters, %d expected."), len2, len - 1);
+ }
+ }
+
+ return TRUE;
+}
+
// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------
+// otherwise VC++ would give here:
+// "local variable 'bi' may be used without having been initialized"
+// even though in fact it may not
+#ifdef __VISUALC__
+ #pragma warning(disable:4701)
+#endif // __VISUALC__
+
+size_t wxConvertBitmapToDIB(BITMAPINFO *pbi, const wxBitmap& bitmap)
+{
+ // shouldn't be selected into a DC or GetDIBits() would fail
+ wxASSERT_MSG( !bitmap.GetSelectedInto(),
+ wxT("can't copy bitmap selected into wxMemoryDC") );
+
+ HBITMAP hbmp = (HBITMAP)bitmap.GetHBITMAP();
+
+ BITMAPINFO bi;
+
+ // first get the info
+ ScreenHDC hdc;
+ if ( !GetDIBits(hdc, hbmp, 0, 0, NULL, pbi ? pbi : &bi, DIB_RGB_COLORS) )
+ {
+ wxLogLastError("GetDIBits(NULL)");
+
+ return 0;
+ }
+
+ if ( !pbi )
+ {
+ // we were only asked for size needed for the buffer, not to actually
+ // copy the data
+ return sizeof(BITMAPINFO) + bi.bmiHeader.biSizeImage;
+ }
+
+ // and now copy the bits
+ if ( !GetDIBits(hdc, hbmp, 0, pbi->bmiHeader.biHeight, pbi + 1,
+ pbi, DIB_RGB_COLORS) )
+ {
+ wxLogLastError("GetDIBits");
+
+ return 0;
+ }
+
+ return sizeof(BITMAPINFO) + pbi->bmiHeader.biSizeImage;
+}
+
+#ifdef __VISUALC__
+ #pragma warning(default:4701)
+#endif // __VISUALC__
+
+wxBitmap wxConvertDIBToBitmap(const BITMAPINFO *pbmi)
+{
+ // here we get BITMAPINFO struct followed by the actual bitmap bits and
+ // BITMAPINFO starts with BITMAPINFOHEADER followed by colour info
+ const BITMAPINFOHEADER *pbmih = &pbmi->bmiHeader;
+
+ ScreenHDC hdc;
+ HBITMAP hbmp = CreateDIBitmap(hdc, pbmih, CBM_INIT,
+ pbmi + 1, pbmi, DIB_RGB_COLORS);
+ if ( !hbmp )
+ {
+ wxLogLastError("CreateDIBitmap");
+ }
+
+ wxBitmap bitmap(pbmih->biWidth, pbmih->biHeight, pbmih->biBitCount);
+ bitmap.SetHBITMAP((WXHBITMAP)hbmp);
+
+ return bitmap;
+}
+
#ifdef __WXDEBUG__
static const wxChar *GetTymedName(DWORD tymed)
projects / wxWidgets.git / blobdiff