#include "wx/msw/private.h"
#include "wx/msw/dib.h"
-// wxDataObject is tied to OLE/drag and drop implementation,
-// therefore so is wxClipboard :-(
-#if wxUSE_DRAG_AND_DROP
+// wxDataObject is tied to OLE/drag and drop implementation, therefore so are
+// the functions using wxDataObject in wxClipboard
+#define wxUSE_DATAOBJ wxUSE_DRAG_AND_DROP
+
+#if wxUSE_DATAOBJ
#include "wx/dataobj.h"
- static bool wxSetClipboardData(wxDataObject *data);
+ // use OLE clipboard
+ #define wxUSE_OLE_CLIPBOARD 1
+#else // !wxUSE_DATAOBJ
+ // use Win clipboard API
+ #define wxUSE_OLE_CLIPBOARD 0
#endif
+#if wxUSE_OLE_CLIPBOARD
+ #include <ole2.h>
+#endif // wxUSE_OLE_CLIPBOARD
+
#ifdef __WIN16__
#define memcpy hmemcpy
#endif
bool wxIsClipboardFormatAvailable(wxDataFormat dataFormat)
{
- return ::IsClipboardFormatAvailable(dataFormat) != 0;
-}
-
-#if wxUSE_DRAG_AND_DROP
-static bool wxSetClipboardData(wxDataObject *data)
-{
- wxDataFormat format = data->GetPreferredFormat();
- size_t size = data->GetDataSize(format);
- HANDLE hGlobal = ::GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, size);
- if ( !hGlobal )
+ if ( ::IsClipboardFormatAvailable(dataFormat) )
{
- wxLogSysError(_("Failed to allocate %dKb of memory for clipboard "
- "transfer."), size / 1024);
-
- return FALSE;
+ // ok from the first try
+ return TRUE;
}
- LPVOID lpGlobalMemory = ::GlobalLock(hGlobal);
-
- data->GetDataHere(format, lpGlobalMemory);
-
- GlobalUnlock(hGlobal);
-
- if ( !::SetClipboardData(format, hGlobal) )
+ // for several standard formats, we can convert from some other ones too
+ switch ( dataFormat.GetFormatId() )
{
- wxLogSysError(_("Failed to set clipboard data in format %s"),
- wxDataObject::GetFormatName(format));
+ // for bitmaps, DIBs will also do
+ case CF_BITMAP:
+ return ::IsClipboardFormatAvailable(CF_DIB) != 0;
- return FALSE;
- }
+#if wxUSE_ENH_METAFILE && !defined(__WIN16__)
+ case CF_METAFILEPICT:
+ return ::IsClipboardFormatAvailable(CF_ENHMETAFILE) != 0;
+#endif // wxUSE_ENH_METAFILE
- return TRUE;
+ default:
+ return FALSE;
+ }
}
-#endif // wxUSE_DRAG_AND_DROP
bool wxSetClipboardData(wxDataFormat dataFormat,
const void *data,
// NULL palette means to use the system one
HANDLE hDIB = wxBitmapToDIB(hBitmap, (HPALETTE)NULL);
handle = SetClipboardData(CF_DIB, hDIB);
-#endif
+#endif // wxUSE_IMAGE_LOADING_IN_MSW
break;
}
-#if wxUSE_METAFILE
+ // VZ: I'm told that this code works, but it doesn't seem to work for me
+ // and, anyhow, I'd be highly surprized if it did. So I leave it here
+ // but IMNSHO it is completely broken.
+#if wxUSE_METAFILE && !defined(wxMETAFILE_IS_ENH)
case wxDF_METAFILE:
{
wxMetafile *wxMF = (wxMetafile *)data;
handle = SetClipboardData(CF_METAFILEPICT, data);
break;
}
-#endif
+#endif // wxUSE_METAFILE
+
+#if wxUSE_ENH_METAFILE && !defined(__WIN16__)
+ case wxDF_ENHMETAFILE:
+ {
+ wxEnhMetaFile *emf = (wxEnhMetaFile *)data;
+ wxEnhMetaFile emfCopy = *emf;
+
+ handle = SetClipboardData(CF_ENHMETAFILE,
+ (void *)emfCopy.GetHENHMETAFILE());
+ }
+ break;
+#endif // wxUSE_ENH_METAFILE
+
case CF_SYLK:
case CF_DIF:
case CF_TIFF:
wxBM->SetWidth(bm.bmWidth);
wxBM->SetHeight(bm.bmHeight);
wxBM->SetDepth(bm.bmPlanes);
+#if WXWIN_COMPATIBILITY_2
wxBM->SetOk(TRUE);
+#endif // WXWIN_COMPATIBILITY_2
retval = wxBM;
break;
}
IMPLEMENT_DYNAMIC_CLASS(wxClipboard, wxObject)
-wxClipboard* wxTheClipboard = (wxClipboard *)NULL;
-
wxClipboard::wxClipboard()
{
+ m_clearOnExit = FALSE;
}
wxClipboard::~wxClipboard()
{
- Clear();
+ if ( m_clearOnExit )
+ {
+ Clear();
+ }
}
void wxClipboard::Clear()
{
+#if wxUSE_OLE_CLIPBOARD
+ if ( FAILED(OleSetClipboard(NULL)) )
+ {
+ wxLogLastError("OleSetClipboard(NULL)");
+ }
+#endif
+}
+
+bool wxClipboard::Flush()
+{
+#if wxUSE_OLE_CLIPBOARD
+ if ( FAILED(OleFlushClipboard()) )
+ {
+ wxLogLastError("OleFlushClipboard");
+
+ return FALSE;
+ }
+ else
+ {
+ m_clearOnExit = FALSE;
+
+ return TRUE;
+ }
+#else // !wxUSE_OLE_CLIPBOARD
+ return FALSE;
+#endif // wxUSE_OLE_CLIPBOARD/!wxUSE_OLE_CLIPBOARD
}
bool wxClipboard::Open()
{
+ // OLE opens clipboard for us
+#if wxUSE_OLE_CLIPBOARD
+ return TRUE;
+#else
return wxOpenClipboard();
+#endif
+}
+
+bool wxClipboard::IsOpened() const
+{
+#if wxUSE_OLE_CLIPBOARD
+ return TRUE;
+#else
+ return wxIsClipboardOpened();
+#endif
}
bool wxClipboard::SetData( wxDataObject *data )
{
+#if !wxUSE_OLE_CLIPBOARD
(void)wxEmptyClipboard();
+#endif // wxUSE_OLE_CLIPBOARD
if ( data )
return AddData(data);
{
wxCHECK_MSG( data, FALSE, wxT("data is invalid") );
-#if wxUSE_DRAG_AND_DROP
+#if wxUSE_OLE_CLIPBOARD
+ HRESULT hr = OleSetClipboard(data->GetInterface());
+ if ( FAILED(hr) )
+ {
+ wxLogSysError(hr, _("Failed to put data on the clipboard"));
+
+ // don't free anything in this case
+
+ return FALSE;
+ }
+
+ // we have a problem here because we should delete wxDataObject, but we
+ // can't do it because IDataObject which we just gave to the clipboard
+ // would try to use it when it will need the data. IDataObject is ref
+ // counted and so doesn't suffer from such problem, so we release it now
+ // and tell it to delete wxDataObject when it is deleted itself.
+ data->SetAutoDelete();
+
+ // we have to call either OleSetClipboard(NULL) or OleFlushClipboard() when
+ // using OLE clipboard when the app terminates - by default, we call
+ // OleSetClipboard(NULL) which won't waste RAM, but the app can call
+ // wxClipboard::Flush() to chaneg this
+ m_clearOnExit = TRUE;
+
+ return TRUE;
+#elif wxUSE_DATAOBJ
wxCHECK_MSG( wxIsClipboardOpened(), FALSE, wxT("clipboard not open") );
wxDataFormat format = data->GetFormat();
default:
return wxSetClipboardData(data);
}
-#else // !wxUSE_DRAG_AND_DROP
+#else // !wxUSE_DATAOBJ
return FALSE;
-#endif // wxUSE_DRAG_AND_DROP/!wxUSE_DRAG_AND_DROP
+#endif // wxUSE_DATAOBJ/!wxUSE_DATAOBJ
}
void wxClipboard::Close()
{
+ // OLE closes clipboard for us
+#if !wxUSE_OLE_CLIPBOARD
wxCloseClipboard();
+#endif
}
bool wxClipboard::IsSupported( wxDataFormat format )
return wxIsClipboardFormatAvailable(format);
}
-bool wxClipboard::GetData( wxDataObject *data )
+bool wxClipboard::GetData( wxDataObject& data )
{
+#if wxUSE_OLE_CLIPBOARD
+ IDataObject *pDataObject = NULL;
+ HRESULT hr = OleGetClipboard(&pDataObject);
+ if ( FAILED(hr) || !pDataObject )
+ {
+ wxLogSysError(hr, _("Failed to get data from the clipboard"));
+
+ return FALSE;
+ }
+
+ // build the list of supported formats
+ size_t nFormats = data.GetFormatCount(wxDataObject::Set);
+ wxDataFormat format, *formats;
+ if ( nFormats == 1 )
+ {
+ // the most common case
+ formats = &format;
+ }
+ else
+ {
+ // bad luck, need to alloc mem
+ formats = new wxDataFormat[nFormats];
+ }
+
+ data.GetAllFormats(formats, wxDataObject::Set);
+
+ // get the format enumerator
+ bool result = FALSE;
+ wxArrayInt supportedFormats;
+ IEnumFORMATETC *pEnumFormatEtc = NULL;
+ hr = pDataObject->EnumFormatEtc(DATADIR_GET, &pEnumFormatEtc);
+ if ( FAILED(hr) || !pEnumFormatEtc )
+ {
+ wxLogSysError(hr,
+ _("Failed to retrieve the supported clipboard formats"));
+ }
+ else
+ {
+ // ask for the supported formats and see if there are any we support
+ FORMATETC formatEtc;
+ for ( ;; )
+ {
+ ULONG nCount;
+ hr = pEnumFormatEtc->Next(1, &formatEtc, &nCount);
+
+ // don't use FAILED() because S_FALSE would pass it
+ if ( hr != S_OK )
+ {
+ // no more formats
+ break;
+ }
+
+ CLIPFORMAT cf = formatEtc.cfFormat;
+
+#ifdef __WXDEBUG__
+ wxLogTrace(wxTRACE_OleCalls,
+ wxT("Object on the clipboard supports format %s."),
+ wxDataObject::GetFormatName(cf));
+#endif // Debug
+
+ // is supported?
+ for ( size_t n = 0; n < nFormats; n++ )
+ {
+ if ( formats[n].GetFormatId() == cf )
+ {
+ if ( supportedFormats.Index(cf) == wxNOT_FOUND )
+ {
+ supportedFormats.Add(cf);
+ }
+ }
+ }
+ }
+
+ pEnumFormatEtc->Release();
+ }
+
+ if ( formats != &format )
+ {
+ delete [] formats;
+ }
+ //else: we didn't allocate any memory
+
+ if ( !supportedFormats.IsEmpty() )
+ {
+ FORMATETC formatEtc;
+ formatEtc.ptd = NULL;
+ formatEtc.dwAspect = DVASPECT_CONTENT;
+ formatEtc.lindex = -1;
+
+ size_t nSupportedFormats = supportedFormats.GetCount();
+ for ( size_t n = 0; !result && (n < nSupportedFormats); n++ )
+ {
+ STGMEDIUM medium;
+ formatEtc.cfFormat = supportedFormats[n];
+
+ // use the appropriate tymed
+ switch ( formatEtc.cfFormat )
+ {
+ case CF_BITMAP:
+ formatEtc.tymed = TYMED_GDI;
+ break;
+
+ case CF_METAFILEPICT:
+ formatEtc.tymed = TYMED_MFPICT;
+ break;
+
+ case CF_ENHMETAFILE:
+ formatEtc.tymed = TYMED_ENHMF;
+ break;
+
+ default:
+ formatEtc.tymed = TYMED_HGLOBAL;
+ }
+
+ // try to get data
+ hr = pDataObject->GetData(&formatEtc, &medium);
+ if ( FAILED(hr) )
+ {
+ // try other tymed for GDI objects
+ if ( formatEtc.cfFormat == CF_BITMAP )
+ {
+ formatEtc.tymed = TYMED_HGLOBAL;
+ hr = pDataObject->GetData(&formatEtc, &medium);
+ }
+ }
+
+ if ( SUCCEEDED(hr) )
+ {
+ // pass the data to the data object
+ hr = data.GetInterface()->SetData(&formatEtc, &medium, TRUE);
+ if ( FAILED(hr) )
+ {
+ wxLogDebug(wxT("Failed to set data in wxIDataObject"));
+
+ // IDataObject only takes the ownership of data if it
+ // successfully got it - which is not the case here
+ ReleaseStgMedium(&medium);
+ }
+ else
+ {
+ result = TRUE;
+ }
+ }
+ //else: unsupported tymed?
+ }
+ }
+ //else: unsupported format
+
+ // clean up and return
+ pDataObject->Release();
+
+ return result;
+#elif wxUSE_DATAOBJ
wxCHECK_MSG( wxIsClipboardOpened(), FALSE, wxT("clipboard not open") );
-#if wxUSE_DRAG_AND_DROP
- wxDataFormat format = data->GetFormat();
+ wxDataFormat format = data.GetFormat();
switch ( format )
{
case wxDF_TEXT:
case wxDF_OEMTEXT:
{
- wxTextDataObject* textDataObject = (wxTextDataObject*) data;
- char* s = (char*) wxGetClipboardData(format);
- if ( s )
- {
- textDataObject->SetText(s);
- delete[] s;
- return TRUE;
- }
- else
+ wxTextDataObject& textDataObject = (wxTextDataObject &)data;
+ char* s = (char*)wxGetClipboardData(format);
+ if ( !s )
return FALSE;
+
+ textDataObject.SetText(s);
+ delete [] s;
+
+ return TRUE;
}
case wxDF_BITMAP:
case wxDF_DIB:
{
- wxBitmapDataObject* bitmapDataObject = (wxBitmapDataObject *)data;
+ wxBitmapDataObject& bitmapDataObject = (wxBitmapDataObject &)data;
wxBitmap* bitmap = (wxBitmap *)wxGetClipboardData(data->GetFormat());
- if (bitmap)
- {
- bitmapDataObject->SetBitmap(* bitmap);
- delete bitmap;
- return TRUE;
- }
- else
+ if ( !bitmap )
return FALSE;
+
+ bitmapDataObject.SetBitmap(*bitmap);
+ delete bitmap;
+
+ return TRUE;
}
#if wxUSE_METAFILE
case wxDF_METAFILE:
{
- wxMetafileDataObject* metaFileDataObject = (wxMetafileDataObject *)data;
+ wxMetafileDataObject& metaFileDataObject = (wxMetafileDataObject &)data;
wxMetafile* metaFile = (wxMetafile *)wxGetClipboardData(wxDF_METAFILE);
- if (metaFile)
- {
- metaFileDataObject->SetMetafile(*metaFile);
- delete metaFile;
- return TRUE;
- }
- else
+ if ( !metaFile )
return FALSE;
- }
-#endif
- default:
- {
- long len;
- void *buf = wxGetClipboardData(format, &len);
- if ( buf )
- {
- // FIXME this is for testing only!!
- ((wxPrivateDataObject *)data)->SetData(buf, len);
- free(buf);
- return TRUE;
- }
- }
+ metaFileDataObject.SetMetafile(*metaFile);
+ delete metaFile;
- return FALSE;
+ return TRUE;
+ }
+#endif // wxUSE_METAFILE
}
-#else
- return FALSE;
-#endif
-}
-
-//-----------------------------------------------------------------------------
-// wxClipboardModule
-//-----------------------------------------------------------------------------
-
-IMPLEMENT_DYNAMIC_CLASS(wxClipboardModule,wxModule)
-
-bool wxClipboardModule::OnInit()
-{
- wxTheClipboard = new wxClipboard();
+#else // !wxUSE_DATAOBJ
+ wxFAIL_MSG( wxT("no clipboard implementation") );
+#endif // wxUSE_OLE_CLIPBOARD/wxUSE_DATAOBJ
- return TRUE;
-}
-
-void wxClipboardModule::OnExit()
-{
- if (wxTheClipboard) delete wxTheClipboard;
- wxTheClipboard = (wxClipboard*) NULL;
+ return FALSE;
}
#else
projects / wxWidgets.git / blobdiff