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Applied patch [ 851052 ] [msw] Clipboard: Allow automatic format conversions

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By Kevin Edwards (ingenuus)


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@25131 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Julian Smart
2004-01-11 18:41:29 +00:00
parent ae29146343
commit 6c29712c64
1 changed files with 85 additions and 86 deletions
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171
src/msw/clipbrd.cpp
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@@ -146,14 +146,16 @@ bool wxIsClipboardOpened()
bool wxIsClipboardFormatAvailable(wxDataFormat dataFormat)
{
if ( ::IsClipboardFormatAvailable(dataFormat) )
CLIPFORMAT cf = dataFormat.GetFormatId();
if ( ::IsClipboardFormatAvailable(cf) )
{
// ok from the first try
return TRUE;
}
// for several standard formats, we can convert from some other ones too
switch ( dataFormat.GetFormatId() )
switch ( cf )
{
// for bitmaps, DIBs will also do
case CF_BITMAP:
@@ -730,9 +732,16 @@ bool wxClipboard::GetData( wxDataObject& data )
data.GetAllFormats(formats, wxDataObject::Set);
// get the format enumerator
// get the data for the given formats
FORMATETC formatEtc;
CLIPFORMAT cf;
bool result = FALSE;
wxArrayInt supportedFormats;
// enumerate all explicit formats on the clipboard.
// note that this does not include implicit / synthetic (automatically
// converted) formats.
#ifdef __WXDEBUG__
// get the format enumerator
IEnumFORMATETC *pEnumFormatEtc = NULL;
hr = pDataObject->EnumFormatEtc(DATADIR_GET, &pEnumFormatEtc);
if ( FAILED(hr) || !pEnumFormatEtc )
@@ -743,7 +752,6 @@ bool wxClipboard::GetData( wxDataObject& data )
else
{
// ask for the supported formats and see if there are any we support
FORMATETC formatEtc;
for ( ;; )
{
ULONG nCount;
@@ -756,29 +764,86 @@ bool wxClipboard::GetData( wxDataObject& data )
break;
}
CLIPFORMAT cf = formatEtc.cfFormat;
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();
}
#endif // Debug
STGMEDIUM medium;
// stop at the first valid format found on the clipboard
for ( size_t n = 0; !result && (n < nFormats); n++ )
{
// convert to NativeFormat Id
cf = formats[n].GetFormatId();
// if the format is not available, try the next one
// this test includes implicit / sythetic formats
if ( !::IsClipboardFormatAvailable(cf) )
continue;
formatEtc.cfFormat = cf;
formatEtc.ptd = NULL;
formatEtc.dwAspect = DVASPECT_CONTENT;
formatEtc.lindex = -1;
// use the appropriate tymed
switch ( formatEtc.cfFormat )
{
case CF_BITMAP:
formatEtc.tymed = TYMED_GDI;
break;
#ifndef __WXWINCE__
case CF_METAFILEPICT:
formatEtc.tymed = TYMED_MFPICT;
break;
case CF_ENHMETAFILE:
formatEtc.tymed = TYMED_ENHMF;
break;
#endif
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?
}
if ( formats != &format )
{
@@ -786,72 +851,6 @@ bool wxClipboard::GetData( wxDataObject& data )
}
//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;
#ifndef __WXWINCE__
case CF_METAFILEPICT:
formatEtc.tymed = TYMED_MFPICT;
break;
case CF_ENHMETAFILE:
formatEtc.tymed = TYMED_ENHMF;
break;
#endif
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();