#include "wx/frame.h"
#include "wx/bitmap.h"
#include "wx/utils.h"
+ #include "wx/intl.h"
#endif
#if wxUSE_METAFILE
#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 wxOpenClipboard()
{
- wxCHECK_MSG( !gs_wxClipboardIsOpen, TRUE, "clipboard already opened." );
+ wxCHECK_MSG( !gs_wxClipboardIsOpen, TRUE, wxT("clipboard already opened.") );
wxWindow *win = wxTheApp->GetTopWindow();
if ( win )
}
else
{
- wxLogDebug("Can not open clipboard without a main window,");
+ wxLogDebug(wxT("Can not open clipboard without a main window."));
return FALSE;
}
bool wxCloseClipboard()
{
- wxCHECK_MSG( gs_wxClipboardIsOpen, FALSE, "clipboard is not opened" );
+ wxCHECK_MSG( gs_wxClipboardIsOpen, FALSE, wxT("clipboard is not opened") );
gs_wxClipboardIsOpen = FALSE;
bool wxIsClipboardFormatAvailable(wxDataFormat dataFormat)
{
- return ::IsClipboardFormatAvailable(dataFormat) != 0;
+ // for bitmaps, DIBs will also do
+ return (::IsClipboardFormatAvailable(dataFormat) != 0) ||
+ (dataFormat.GetFormatId() == CF_BITMAP &&
+ ::IsClipboardFormatAvailable(CF_DIB));
}
-#if wxUSE_DRAG_AND_DROP
-static bool wxSetClipboardData(wxDataObject *data)
-{
- size_t size = data->GetDataSize();
- HANDLE hGlobal = ::GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, size);
- if ( !hGlobal )
- {
- wxLogSysError(_("Failed to allocate %dKb of memory for clipboard "
- "transfer."), size / 1024);
-
- return FALSE;
- }
-
- LPVOID lpGlobalMemory = ::GlobalLock(hGlobal);
-
- data->GetDataHere(lpGlobalMemory);
-
- GlobalUnlock(hGlobal);
-
- wxDataFormat format = data->GetPreferredFormat();
- if ( !::SetClipboardData(format, hGlobal) )
- {
- wxLogSysError(_("Failed to set clipboard data in format %s"),
- wxDataObject::GetFormatName(format));
-
- return FALSE;
- }
-
- return TRUE;
-}
-#endif // wxUSE_DRAG_AND_DROP
-
bool wxSetClipboardData(wxDataFormat dataFormat,
const void *data,
int width, int height)
wxBitmap *bitmap = (wxBitmap *)data;
HBITMAP hBitmap = (HBITMAP)bitmap->GetHBITMAP();
// NULL palette means to use the system one
- HANDLE hDIB = BitmapToDIB(hBitmap, (HPALETTE)NULL);
+ HANDLE hDIB = wxBitmapToDIB(hBitmap, (HPALETTE)NULL);
handle = SetClipboardData(CF_DIB, hDIB);
-#endif
+#endif // wxUSE_IMAGE_LOADING_IN_MSW
break;
}
return ::EnumClipboardFormats(dataFormat);
}
-int wxRegisterClipboardFormat(char *formatName)
+int wxRegisterClipboardFormat(wxChar *formatName)
{
return ::RegisterClipboardFormat(formatName);
}
bool wxGetClipboardFormatName(wxDataFormat dataFormat,
- char *formatName,
+ wxChar *formatName,
int maxCount)
{
return ::GetClipboardFormatName((int)dataFormat, formatName, maxCount) > 0;
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 )
bool wxClipboard::AddData( wxDataObject *data )
{
- wxCHECK_MSG( data, FALSE, "data is invalid" );
+ wxCHECK_MSG( data, FALSE, wxT("data is invalid") );
-#if wxUSE_DRAG_AND_DROP
- wxCHECK_MSG( wxIsClipboardOpened(), FALSE, "clipboard not open" );
+#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 )
bool wxClipboard::GetData( wxDataObject *data )
{
- wxCHECK_MSG( wxIsClipboardOpened(), FALSE, "clipboard not open" );
+ wxCHECK_MSG( data, FALSE, wxT("invalid data object") );
+
+#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;
+ formatEtc.tymed = TYMED_HGLOBAL;
+
+ size_t nSupportedFormats = supportedFormats.GetCount();
+ for ( size_t n = 0; !result && (n < nSupportedFormats); n++ )
+ {
+ STGMEDIUM medium;
+ formatEtc.cfFormat = supportedFormats[n];
+
+ // 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();
switch ( format )
{
return FALSE;
}
-#else
+#else // !wxUSE_DATAOBJ
return FALSE;
-#endif
-}
-
-//-----------------------------------------------------------------------------
-// wxClipboardModule
-//-----------------------------------------------------------------------------
-
-IMPLEMENT_DYNAMIC_CLASS(wxClipboardModule,wxModule)
-
-bool wxClipboardModule::OnInit()
-{
- wxTheClipboard = new wxClipboard();
-
- return TRUE;
-}
-
-void wxClipboardModule::OnExit()
-{
- if (wxTheClipboard) delete wxTheClipboard;
- wxTheClipboard = (wxClipboard*) NULL;
+#endif // wxUSE_DATAOBJ/!wxUSE_DATAOBJ
}
#else
projects / wxWidgets.git / blobdiff