// Name: msw/ole/dataobj.cpp
// Purpose: implementation of wx[I]DataObject class
// Author: Vadim Zeitlin
-// Modified by:
+// Modified by:
// Created: 10.05.98
// RCS-ID: $Id$
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
#if defined(__BORLANDC__)
#pragma hdrstop
#endif
+#ifndef WX_PRECOMP
+#include "wx/intl.h"
+#endif
+#include "wx/defs.h"
-#include <wx/defs.h>
+#if defined(__WIN32__) && !defined(__GNUWIN32__) || defined(wxUSE_NORLANDER_HEADERS)
-#if defined(__WIN32__) && !defined(__GNUWIN32__)
+#include "wx/log.h"
+#include "wx/dataobj.h"
-#include <wx/log.h>
-#include <wx/msw/ole/oleutils.h>
-#include <wx/msw/ole/dataobj.h>
+#include <windows.h>
+#ifdef wxUSE_NORLANDER_HEADERS
+ #include <ole2.h>
+#endif
+#include <oleauto.h>
#ifndef __WIN32__
#include <ole2.h>
#include <olestd.h>
#endif
+#include "wx/msw/ole/oleutils.h"
+
// ----------------------------------------------------------------------------
// functions
// ----------------------------------------------------------------------------
-static const char *GetTymedName(DWORD tymed);
+#ifdef __WXDEBUG__
+ 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
// ----------------------------------------------------------------------------
+
class wxIEnumFORMATETC : public IEnumFORMATETC
{
public:
- wxIEnumFORMATETC(CLIPFORMAT cf);
+ wxIEnumFORMATETC(const wxDataFormat* formats, ULONG nCount);
+ ~wxIEnumFORMATETC() { delete [] m_formats; }
- DECLARE_IUNKNOWN_METHODS;
+ DECLARE_IUNKNOWN_METHODS;
- // IEnumFORMATETC
- STDMETHODIMP Next(ULONG celt, FORMATETC *rgelt, ULONG *pceltFetched);
- STDMETHODIMP Skip(ULONG celt);
- STDMETHODIMP Reset();
- STDMETHODIMP Clone(IEnumFORMATETC **ppenum);
+ // IEnumFORMATETC
+ STDMETHODIMP Next(ULONG celt, FORMATETC *rgelt, ULONG *pceltFetched);
+ STDMETHODIMP Skip(ULONG celt);
+ STDMETHODIMP Reset();
+ STDMETHODIMP Clone(IEnumFORMATETC **ppenum);
private:
- FORMATETC m_format; // (unique @@@) format we can provide data in
- ULONG m_nCurrent; // current enum position (currently either 0 or 1)
+ CLIPFORMAT *m_formats; // formats we can provide data in
+ ULONG m_nCount, // number of formats we support
+ m_nCurrent; // current enum position
};
// ----------------------------------------------------------------------------
// wxIDataObject implementation of IDataObject interface
// ----------------------------------------------------------------------------
+
class wxIDataObject : public IDataObject
{
public:
- wxIDataObject(wxDataObject *pDataObject);
+ wxIDataObject(wxDataObject *pDataObject);
+ ~wxIDataObject();
+
+ // normally, wxDataObject controls our lifetime (i.e. we're deleted when it
+ // is), but in some cases, the situation is inversed, that is we delete it
+ // when this object is deleted - setting this flag enables such logic
+ void SetDeleteFlag() { m_mustDelete = TRUE; }
+
+ DECLARE_IUNKNOWN_METHODS;
+
+ // IDataObject
+ STDMETHODIMP GetData(FORMATETC *pformatetcIn, STGMEDIUM *pmedium);
+ STDMETHODIMP GetDataHere(FORMATETC *pformatetc, STGMEDIUM *pmedium);
+ STDMETHODIMP QueryGetData(FORMATETC *pformatetc);
+ STDMETHODIMP GetCanonicalFormatEtc(FORMATETC *In, FORMATETC *pOut);
+ STDMETHODIMP SetData(FORMATETC *pfetc, STGMEDIUM *pmedium, BOOL fRelease);
+ STDMETHODIMP EnumFormatEtc(DWORD dwDirection, IEnumFORMATETC **ppenumFEtc);
+ STDMETHODIMP DAdvise(FORMATETC *pfetc, DWORD ad, IAdviseSink *p, DWORD *pdw);
+ STDMETHODIMP DUnadvise(DWORD dwConnection);
+ STDMETHODIMP EnumDAdvise(IEnumSTATDATA **ppenumAdvise);
- DECLARE_IUNKNOWN_METHODS;
+private:
+ wxDataObject *m_pDataObject; // pointer to C++ class we belong to
- // IDataObject
- STDMETHODIMP GetData(FORMATETC *pformatetcIn, STGMEDIUM *pmedium);
- STDMETHODIMP GetDataHere(FORMATETC *pformatetc, STGMEDIUM *pmedium);
- STDMETHODIMP QueryGetData(FORMATETC *pformatetc);
- STDMETHODIMP GetCanonicalFormatEtc(FORMATETC *In, FORMATETC *pOut);
- STDMETHODIMP SetData(FORMATETC *pfetc, STGMEDIUM *pmedium, BOOL fRelease);
- STDMETHODIMP EnumFormatEtc(DWORD dwDirection, IEnumFORMATETC **ppenumFEtc);
- STDMETHODIMP DAdvise(FORMATETC *pfetc, DWORD ad, IAdviseSink *p, DWORD *pdw);
- STDMETHODIMP DUnadvise(DWORD dwConnection);
- STDMETHODIMP EnumDAdvise(IEnumSTATDATA **ppenumAdvise);
+ bool m_mustDelete;
+};
+
+// ----------------------------------------------------------------------------
+// small helper class for getting screen DC (we're working with bitmaps and
+// DIBs here)
+// ----------------------------------------------------------------------------
+
+class ScreenHDC
+{
+public:
+ ScreenHDC() { m_hdc = GetDC(NULL); }
+ ~ScreenHDC() { ReleaseDC(NULL, m_hdc); }
+ operator HDC() const { return m_hdc; }
private:
- wxDataObject *m_pDataObject; // pointer to C++ class we belong to
+ HDC m_hdc;
};
// ============================================================================
// implementation
// ============================================================================
+// ----------------------------------------------------------------------------
+// wxDataFormat
+// ----------------------------------------------------------------------------
+
+void wxDataFormat::SetId(const wxChar *format)
+{
+ m_format = ::RegisterClipboardFormat(format);
+ if ( !m_format )
+ {
+ wxLogError(_("Couldn't register clipboard format '%s'."), format);
+ }
+}
+
+wxString wxDataFormat::GetId() const
+{
+ static const int max = 256;
+
+ wxString s;
+
+ wxCHECK_MSG( !IsStandard(), s,
+ wxT("name of predefined format cannot be retrieved") );
+
+ int len = ::GetClipboardFormatName(m_format, s.GetWriteBuf(max), max);
+ s.UngetWriteBuf();
+
+ if ( !len )
+ {
+ wxLogError(_("The clipboard format '%d' doesn't exist."), m_format);
+ }
+
+ return s;
+}
+
// ----------------------------------------------------------------------------
// wxIEnumFORMATETC
// ----------------------------------------------------------------------------
BEGIN_IID_TABLE(wxIEnumFORMATETC)
- ADD_IID(Unknown)
- ADD_IID(EnumFORMATETC)
+ ADD_IID(Unknown)
+ ADD_IID(EnumFORMATETC)
END_IID_TABLE;
IMPLEMENT_IUNKNOWN_METHODS(wxIEnumFORMATETC)
-wxIEnumFORMATETC::wxIEnumFORMATETC(CLIPFORMAT cf)
+wxIEnumFORMATETC::wxIEnumFORMATETC(const wxDataFormat *formats, ULONG nCount)
{
- m_format.cfFormat = cf;
- m_format.ptd = NULL;
- m_format.dwAspect = DVASPECT_CONTENT;
- m_format.lindex = -1;
- m_format.tymed = TYMED_HGLOBAL;
- m_cRef = 0;
- m_nCurrent = 0;
+ m_cRef = 0;
+ m_nCurrent = 0;
+ m_nCount = nCount;
+ m_formats = new CLIPFORMAT[nCount];
+ for ( ULONG n = 0; n < nCount; n++ ) {
+ m_formats[n] = formats[n].GetFormatId();
+ }
}
STDMETHODIMP wxIEnumFORMATETC::Next(ULONG celt,
FORMATETC *rgelt,
ULONG *pceltFetched)
{
- wxLogTrace("wxIEnumFORMATETC::Next");
-
- if ( celt > 1 )
- return S_FALSE;
-
- if ( m_nCurrent == 0 ) {
- *rgelt = m_format;
- m_nCurrent++;
-
- return S_OK;
- }
- else
- return S_FALSE;
+ wxLogTrace(wxTRACE_OleCalls, wxT("wxIEnumFORMATETC::Next"));
+
+ if ( celt > 1 ) {
+ // we only return 1 element at a time - mainly because I'm too lazy to
+ // implement something which you're never asked for anyhow
+ return S_FALSE;
+ }
+
+ if ( m_nCurrent < m_nCount ) {
+ FORMATETC format;
+ format.cfFormat = m_formats[m_nCurrent++];
+ format.ptd = NULL;
+ format.dwAspect = DVASPECT_CONTENT;
+ format.lindex = -1;
+ format.tymed = TYMED_HGLOBAL;
+ *rgelt = format;
+
+ return S_OK;
+ }
+ else {
+ // bad index
+ return S_FALSE;
+ }
}
STDMETHODIMP wxIEnumFORMATETC::Skip(ULONG celt)
{
- wxLogTrace("wxIEnumFORMATETC::Skip");
+ wxLogTrace(wxTRACE_OleCalls, wxT("wxIEnumFORMATETC::Skip"));
- if ( m_nCurrent == 0 )
- m_nCurrent++;
+ m_nCurrent += celt;
+ if ( m_nCurrent < m_nCount )
+ return S_OK;
- return S_FALSE;
+ // no, can't skip this many elements
+ m_nCurrent -= celt;
+
+ return S_FALSE;
}
STDMETHODIMP wxIEnumFORMATETC::Reset()
{
- wxLogTrace("wxIEnumFORMATETC::Reset");
+ wxLogTrace(wxTRACE_OleCalls, wxT("wxIEnumFORMATETC::Reset"));
- m_nCurrent = 0;
+ m_nCurrent = 0;
- return S_OK;
+ return S_OK;
}
STDMETHODIMP wxIEnumFORMATETC::Clone(IEnumFORMATETC **ppenum)
{
- wxLogTrace("wxIEnumFORMATETC::Clone");
+ wxLogTrace(wxTRACE_OleCalls, wxT("wxIEnumFORMATETC::Clone"));
+
+ // unfortunately, we can't reuse the code in ctor - types are different
+ wxIEnumFORMATETC *pNew = new wxIEnumFORMATETC(NULL, 0);
+ pNew->m_nCount = m_nCount;
+ pNew->m_formats = new CLIPFORMAT[m_nCount];
+ for ( ULONG n = 0; n < m_nCount; n++ ) {
+ pNew->m_formats[n] = m_formats[n];
+ }
+ pNew->AddRef();
+ *ppenum = pNew;
- wxIEnumFORMATETC *pNew = new wxIEnumFORMATETC(m_format.cfFormat);
- pNew->AddRef();
- *ppenum = pNew;
-
- return S_OK;
+ return S_OK;
}
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
BEGIN_IID_TABLE(wxIDataObject)
- ADD_IID(Unknown)
- ADD_IID(DataObject)
+ ADD_IID(Unknown)
+ ADD_IID(DataObject)
END_IID_TABLE;
IMPLEMENT_IUNKNOWN_METHODS(wxIDataObject)
wxIDataObject::wxIDataObject(wxDataObject *pDataObject)
{
- m_cRef = 0;
- m_pDataObject = pDataObject;
+ m_cRef = 0;
+ m_pDataObject = pDataObject;
+ m_mustDelete = FALSE;
+}
+
+wxIDataObject::~wxIDataObject()
+{
+ if ( m_mustDelete )
+ {
+ delete m_pDataObject;
+ }
}
// get data functions
STDMETHODIMP wxIDataObject::GetData(FORMATETC *pformatetcIn, STGMEDIUM *pmedium)
{
- wxLogTrace("wxIDataObject::GetData");
-
- // is data is in our format?
- HRESULT hr = QueryGetData(pformatetcIn);
- if ( FAILED(hr) )
- return hr;
-
- // alloc memory
- HGLOBAL hGlobal = GlobalAlloc(GMEM_MOVEABLE | GMEM_SHARE,
- m_pDataObject->GetDataSize());
- if ( hGlobal == NULL ) {
- wxLogLastError("GlobalAlloc");
- return E_OUTOFMEMORY;
- }
+ 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 = (wxDataFormatId)pformatetcIn->cfFormat;
+
+ switch ( format )
+ {
+ case wxDF_BITMAP:
+ pmedium->tymed = TYMED_GDI;
+ break;
+
+ case wxDF_METAFILE:
+ pmedium->tymed = TYMED_MFPICT;
+ break;
+
+ 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;
+ }
+
+ 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");
+ 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 ) {
+ GlobalFree(pmedium->hGlobal);
+ }
+
+ return hr;
+ }
- // copy data
- pmedium->tymed = TYMED_HGLOBAL;
- pmedium->hGlobal = hGlobal;
- pmedium->pUnkForRelease = NULL;
-
- hr = GetDataHere(pformatetcIn, pmedium);
- if ( FAILED(hr) ) {
- GlobalFree(hGlobal);
- return hr;
- }
-
- return S_OK;
+ return S_OK;
}
STDMETHODIMP wxIDataObject::GetDataHere(FORMATETC *pformatetc,
STGMEDIUM *pmedium)
{
- wxLogTrace("wxIDataObject::GetDataHere");
-
- // put data in caller provided medium
- if ( pmedium->tymed != TYMED_HGLOBAL )
- return DV_E_TYMED;
+ wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::GetDataHere"));
+
+ // put data in caller provided medium
+ switch ( pmedium->tymed )
+ {
+ case TYMED_GDI:
+ if ( !m_pDataObject->GetDataHere(wxDF_BITMAP, &pmedium->hBitmap) )
+ return E_UNEXPECTED;
+ break;
+
+ case TYMED_MFPICT:
+ // this should be copied on bitmaps - but I don't have time for
+ // this now
+ wxFAIL_MSG(wxT("TODO - no support for metafiles in wxDataObject"));
+ break;
+
+ case TYMED_HGLOBAL:
+ {
+ // copy data
+ HGLOBAL hGlobal = pmedium->hGlobal;
+ void *pBuf = GlobalLock(hGlobal);
+ if ( pBuf == NULL ) {
+ wxLogLastError(wxT("GlobalLock"));
+ return E_OUTOFMEMORY;
+ }
+
+ 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(hGlobal);
+ }
+ break;
+
+ default:
+ return DV_E_TYMED;
+ }
- // copy data
- void *pBuf = GlobalLock(pmedium->hGlobal);
- if ( pBuf == NULL ) {
- wxLogLastError("GlobalLock");
- return E_OUTOFMEMORY;
- }
-
- m_pDataObject->GetDataHere(pBuf);
-
- GlobalUnlock(pmedium->hGlobal);
-
- return S_OK;
+ return S_OK;
}
-// set data functions (not implemented)
+// set data functions
STDMETHODIMP wxIDataObject::SetData(FORMATETC *pformatetc,
STGMEDIUM *pmedium,
BOOL fRelease)
{
- wxLogTrace("wxIDataObject::SetData");
- return E_NOTIMPL;
+ wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::SetData"));
+
+ switch ( pmedium->tymed )
+ {
+ case TYMED_GDI:
+ m_pDataObject->SetData(wxDF_BITMAP, 0, &pmedium->hBitmap);
+ break;
+
+ case TYMED_MFPICT:
+ // this should be copied on bitmaps - but I don't have time for
+ // this now
+ wxFAIL_MSG(wxT("TODO - no support for metafiles in wxDataObject"));
+ break;
+
+ case TYMED_HGLOBAL:
+ {
+ // copy data
+ void *pBuf = GlobalLock(pmedium->hGlobal);
+ if ( pBuf == NULL ) {
+ wxLogLastError("GlobalLock");
+
+ return E_OUTOFMEMORY;
+ }
+
+ // 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;
+
+ default:
+ return DV_E_TYMED;
+ }
+
+ if ( fRelease ) {
+ // we own the medium, so we must release it - but do *not* free the
+ // bitmap handle fi we have it because we have copied it elsewhere
+ if ( pmedium->tymed == TYMED_GDI )
+ {
+ pmedium->hBitmap = 0;
+ }
+
+ ReleaseStgMedium(pmedium);
+ }
+
+ return S_OK;
}
// information functions
STDMETHODIMP wxIDataObject::QueryGetData(FORMATETC *pformatetc)
{
- // do we accept data in this format?
- if ( pformatetc == NULL ) {
- wxLogTrace("wxIDataObject::QueryGetData: invalid ptr.");
- return E_INVALIDARG;
- }
-
- // the only one allowed by current COM implementation
- if ( pformatetc->lindex != -1 ) {
- wxLogTrace("wxIDataObject::QueryGetData: bad lindex %d",
- pformatetc->lindex);
- return DV_E_LINDEX;
- }
-
- // we don't support anything other (THUMBNAIL, ICON, DOCPRINT...)
- if ( pformatetc->dwAspect != DVASPECT_CONTENT ) {
- wxLogTrace("wxIDataObject::QueryGetData: bad dwAspect %d",
- pformatetc->dwAspect);
- return DV_E_DVASPECT;
- }
+ // do we accept data in this format?
+ if ( pformatetc == NULL ) {
+ wxLogTrace(wxTRACE_OleCalls,
+ wxT("wxIDataObject::QueryGetData: invalid ptr."));
+
+ return E_INVALIDARG;
+ }
+
+ // the only one allowed by current COM implementation
+ if ( pformatetc->lindex != -1 ) {
+ wxLogTrace(wxTRACE_OleCalls,
+ wxT("wxIDataObject::QueryGetData: bad lindex %d"),
+ pformatetc->lindex);
+
+ return DV_E_LINDEX;
+ }
+
+ // we don't support anything other (THUMBNAIL, ICON, DOCPRINT...)
+ if ( pformatetc->dwAspect != DVASPECT_CONTENT ) {
+ wxLogTrace(wxTRACE_OleCalls,
+ wxT("wxIDataObject::QueryGetData: bad dwAspect %d"),
+ pformatetc->dwAspect);
+
+ return DV_E_DVASPECT;
+ }
+
+ // and now check the type of data requested
+ wxDataFormat format = pformatetc->cfFormat;
+ if ( m_pDataObject->IsSupportedFormat(format) ) {
+#ifdef __WXDEBUG__
+ wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::QueryGetData: %s ok"),
+ wxDataObject::GetFormatName(format));
+#endif // Debug
+ }
+ else {
+ wxLogTrace(wxTRACE_OleCalls,
+ wxT("wxIDataObject::QueryGetData: %s unsupported"),
+ wxDataObject::GetFormatName(format));
+
+ return DV_E_FORMATETC;
+ }
+
+ // we only transfer data by global memory, except for some particular cases
+ DWORD tymed = pformatetc->tymed;
+ if ( (format == wxDF_BITMAP && !(tymed & TYMED_GDI)) &&
+ !(tymed & TYMED_HGLOBAL) ) {
+ // it's not what we're waiting for
+#ifdef __WXDEBUG__
+ wxLogTrace(wxTRACE_OleCalls,
+ wxT("wxIDataObject::QueryGetData: %s != %s"),
+ GetTymedName(tymed),
+ GetTymedName(format == wxDF_BITMAP ? TYMED_GDI
+ : TYMED_HGLOBAL));
+#endif // Debug
- // @@ we only transfer data by global memory (bad for large amounts of it!)
- if ( !(pformatetc->tymed & TYMED_HGLOBAL) ) {
- wxLogTrace("wxIDataObject::QueryGetData: %s != TYMED_HGLOBAL.",
- GetTymedName(pformatetc->tymed));
- return DV_E_TYMED;
- }
+ return DV_E_TYMED;
+ }
- // and now check the type of data requested
- if ( m_pDataObject->IsSupportedFormat(pformatetc->cfFormat) ) {
- wxLogTrace("wxIDataObject::QueryGetData: %s ok",
- wxDataObject::GetFormatName(pformatetc->cfFormat));
return S_OK;
- }
- else {
- wxLogTrace("wxIDataObject::QueryGetData: %s unsupported",
- wxDataObject::GetFormatName(pformatetc->cfFormat));
- return DV_E_FORMATETC;
- }
}
STDMETHODIMP wxIDataObject::GetCanonicalFormatEtc(FORMATETC *pFormatetcIn,
FORMATETC *pFormatetcOut)
{
- wxLogTrace("wxIDataObject::GetCanonicalFormatEtc");
+ wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::GetCanonicalFormatEtc"));
+
+ // TODO we might want something better than this trivial implementation here
+ if ( pFormatetcOut != NULL )
+ pFormatetcOut->ptd = NULL;
- // @@ implementation is trivial, we might want something better here
- if ( pFormatetcOut != NULL )
- pFormatetcOut->ptd = NULL;
- return DATA_S_SAMEFORMATETC;
+ return DATA_S_SAMEFORMATETC;
}
-STDMETHODIMP wxIDataObject::EnumFormatEtc(DWORD dwDirection,
+STDMETHODIMP wxIDataObject::EnumFormatEtc(DWORD dwDir,
IEnumFORMATETC **ppenumFormatEtc)
{
- wxLogTrace("wxIDataObject::EnumFormatEtc");
+ wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::EnumFormatEtc"));
- if ( dwDirection == DATADIR_SET ) {
- // we don't allow setting of data anyhow
- return E_NOTIMPL;
- }
+ wxDataObject::Direction dir = dwDir == DATADIR_GET ? wxDataObject::Get
+ : wxDataObject::Set;
+
+ size_t nFormatCount = m_pDataObject->GetFormatCount(dir);
+ wxDataFormat format, *formats;
+ formats = nFormatCount == 1 ? &format : new wxDataFormat[nFormatCount];
+ m_pDataObject->GetAllFormats(formats, dir);
+
+ wxIEnumFORMATETC *pEnum = new wxIEnumFORMATETC(formats, nFormatCount);
+ pEnum->AddRef();
+ *ppenumFormatEtc = pEnum;
- wxIEnumFORMATETC *pEnum =
- new wxIEnumFORMATETC(m_pDataObject->GetPreferredFormat());
- pEnum->AddRef();
- *ppenumFormatEtc = pEnum;
+ if ( formats != &format ) {
+ delete [] formats;
+ }
- return S_OK;
+ return S_OK;
}
+// ----------------------------------------------------------------------------
// advise sink functions (not implemented)
+// ----------------------------------------------------------------------------
+
STDMETHODIMP wxIDataObject::DAdvise(FORMATETC *pformatetc,
DWORD advf,
IAdviseSink *pAdvSink,
wxDataObject::wxDataObject()
{
- m_pIDataObject = new wxIDataObject(this);
- m_pIDataObject->AddRef();
+ m_pIDataObject = new wxIDataObject(this);
+ m_pIDataObject->AddRef();
}
wxDataObject::~wxDataObject()
{
- m_pIDataObject->Release();
+ ReleaseInterface(m_pIDataObject);
+}
+
+void wxDataObject::SetAutoDelete()
+{
+ ((wxIDataObject *)m_pIDataObject)->SetDeleteFlag();
+ m_pIDataObject->Release();
+
+ // so that the dtor doesnt' crash
+ m_pIDataObject = NULL;
+}
+
+bool wxDataObject::IsSupportedFormat(const wxDataFormat& format) const
+{
+ size_t nFormatCount = GetFormatCount();
+ if ( nFormatCount == 1 ) {
+ return format == GetPreferredFormat();
+ }
+ else {
+ wxDataFormat *formats = new wxDataFormat[nFormatCount];
+ GetAllFormats(formats);
+
+ size_t n;
+ for ( n = 0; n < nFormatCount; n++ ) {
+ if ( formats[n] == format )
+ break;
+ }
+
+ delete [] formats;
+
+ // found?
+ return n < nFormatCount;
+ }
}
const char *wxDataObject::GetFormatName(wxDataFormat format)
{
-#ifdef __WXDEBUG__
+ // case 'xxx' is not a valid value for switch of enum 'wxDataFormat'
+ #ifdef __VISUALC__
+ #pragma warning(disable:4063)
+ #endif // VC++
+
static char s_szBuf[128];
switch ( format ) {
case CF_TEXT: return "CF_TEXT";
case CF_HDROP: return "CF_HDROP";
case CF_LOCALE: return "CF_LOCALE";
default:
- sprintf(s_szBuf, "clipboard format %d (unknown)", format);
+ sprintf(s_szBuf, "clipboard format 0x%x (unknown)", format);
return s_szBuf;
}
- #else
- return "";
-#endif
+
+ #ifdef __VISUALC__
+ #pragma warning(default:4063)
+ #endif // VC++
+}
+
+// ----------------------------------------------------------------------------
+// wxBitmapDataObject supports CF_DIB format
+// ----------------------------------------------------------------------------
+
+size_t wxBitmapDataObject::GetDataSize() const
+{
+ return wxConvertBitmapToDIB(NULL, GetBitmap());
+}
+
+bool wxBitmapDataObject::GetDataHere(void *buf) const
+{
+ return wxConvertBitmapToDIB((BITMAPINFO *)buf, GetBitmap()) != 0;
+}
+
+bool wxBitmapDataObject::SetData(size_t len, const void *buf)
+{
+ wxBitmap bitmap(wxConvertDIBToBitmap((const BITMAPINFO *)buf));
+
+ if ( !bitmap.Ok() ) {
+ wxFAIL_MSG(wxT("pasting/dropping invalid bitmap"));
+
+ return FALSE;
+ }
+
+ SetBitmap(bitmap);
+
+ return TRUE;
+}
+
+// ----------------------------------------------------------------------------
+// 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
+{
+ return 0;
+}
+
+bool wxBitmapDataObject2::GetDataHere(void *pBuf) const
+{
+ // we put a bitmap handle into pBuf
+ *(WXHBITMAP *)pBuf = GetBitmap().GetHBITMAP();
+
+ return TRUE;
+}
+
+bool wxBitmapDataObject2::SetData(size_t len, const void *pBuf)
+{
+ HBITMAP hbmp = *(HBITMAP *)pBuf;
+
+ BITMAP bmp;
+ if ( !GetObject(hbmp, sizeof(BITMAP), &bmp) )
+ {
+ wxLogLastError("GetObject(HBITMAP)");
+ }
+
+ wxBitmap bitmap(bmp.bmWidth, bmp.bmHeight, bmp.bmPlanes);
+ bitmap.SetHBITMAP((WXHBITMAP)hbmp);
+
+ if ( !bitmap.Ok() ) {
+ wxFAIL_MSG(wxT("pasting/dropping invalid bitmap"));
+
+ return FALSE;
+ }
+
+ SetBitmap(bitmap);
+
+ return TRUE;
+}
+
+#if 0
+
+size_t wxBitmapDataObject::GetDataSize(const wxDataFormat& format) const
+{
+ if ( format.GetFormatId() == CF_DIB )
+ {
+ // create the DIB
+ ScreenHDC hdc;
+
+ // shouldn't be selected into a DC or GetDIBits() would fail
+ wxASSERT_MSG( !m_bitmap.GetSelectedInto(),
+ wxT("can't copy bitmap selected into wxMemoryDC") );
+
+ // first get the info
+ BITMAPINFO bi;
+ if ( !GetDIBits(hdc, (HBITMAP)m_bitmap.GetHBITMAP(), 0, 0,
+ NULL, &bi, DIB_RGB_COLORS) )
+ {
+ wxLogLastError("GetDIBits(NULL)");
+
+ return 0;
+ }
+
+ return sizeof(BITMAPINFO) + bi.bmiHeader.biSizeImage;
+ }
+ else // CF_BITMAP
+ {
+ // no data to copy - we don't pass HBITMAP via global memory
+ return 0;
+ }
+}
+
+bool wxBitmapDataObject::GetDataHere(const wxDataFormat& format,
+ void *pBuf) const
+{
+ wxASSERT_MSG( m_bitmap.Ok(), wxT("copying invalid bitmap") );
+
+ HBITMAP hbmp = (HBITMAP)m_bitmap.GetHBITMAP();
+ if ( format.GetFormatId() == CF_DIB )
+ {
+ // create the DIB
+ ScreenHDC hdc;
+
+ // shouldn't be selected into a DC or GetDIBits() would fail
+ wxASSERT_MSG( !m_bitmap.GetSelectedInto(),
+ wxT("can't copy bitmap selected into wxMemoryDC") );
+
+ // first get the info
+ BITMAPINFO *pbi = (BITMAPINFO *)pBuf;
+ if ( !GetDIBits(hdc, hbmp, 0, 0, NULL, pbi, DIB_RGB_COLORS) )
+ {
+ wxLogLastError("GetDIBits(NULL)");
+
+ return 0;
+ }
+
+ // and now copy the bits
+ if ( !GetDIBits(hdc, hbmp, 0, pbi->bmiHeader.biHeight, pbi + 1,
+ pbi, DIB_RGB_COLORS) )
+ {
+ wxLogLastError("GetDIBits");
+
+ return FALSE;
+ }
+ }
+ else // CF_BITMAP
+ {
+ // we put a bitmap handle into pBuf
+ *(HBITMAP *)pBuf = hbmp;
+ }
+
+ return TRUE;
+}
+
+bool wxBitmapDataObject::SetData(const wxDataFormat& format,
+ size_t size, const void *pBuf)
+{
+ HBITMAP hbmp;
+ if ( format.GetFormatId() == CF_DIB )
+ {
+ // here we get BITMAPINFO struct followed by the actual bitmap bits and
+ // BITMAPINFO starts with BITMAPINFOHEADER followed by colour info
+ ScreenHDC hdc;
+
+ BITMAPINFO *pbmi = (BITMAPINFO *)pBuf;
+ BITMAPINFOHEADER *pbmih = &pbmi->bmiHeader;
+ hbmp = CreateDIBitmap(hdc, pbmih, CBM_INIT,
+ pbmi + 1, pbmi, DIB_RGB_COLORS);
+ if ( !hbmp )
+ {
+ wxLogLastError("CreateDIBitmap");
+ }
+
+ m_bitmap.SetWidth(pbmih->biWidth);
+ m_bitmap.SetHeight(pbmih->biHeight);
+ }
+ else // CF_BITMAP
+ {
+ // it's easy with bitmaps: we pass them by handle
+ hbmp = *(HBITMAP *)pBuf;
+
+ BITMAP bmp;
+ if ( !GetObject(hbmp, sizeof(BITMAP), &bmp) )
+ {
+ wxLogLastError("GetObject(HBITMAP)");
+ }
+
+ m_bitmap.SetWidth(bmp.bmWidth);
+ m_bitmap.SetHeight(bmp.bmHeight);
+ m_bitmap.SetDepth(bmp.bmPlanes);
+ }
+
+ m_bitmap.SetHBITMAP((WXHBITMAP)hbmp);
+
+ wxASSERT_MSG( m_bitmap.Ok(), wxT("pasting invalid bitmap") );
+
+ 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
// ----------------------------------------------------------------------------
-static const char *GetTymedName(DWORD tymed)
+
+// 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)
{
- static char s_szBuf[128];
- switch ( tymed ) {
- case TYMED_HGLOBAL: return "TYMED_HGLOBAL";
- case TYMED_FILE: return "TYMED_FILE";
- case TYMED_ISTREAM: return "TYMED_ISTREAM";
- case TYMED_ISTORAGE: return "TYMED_ISTORAGE";
- case TYMED_GDI: return "TYMED_GDI";
- case TYMED_MFPICT: return "TYMED_MFPICT";
- case TYMED_ENHMF: return "TYMED_ENHMF";
- default:
- sprintf(s_szBuf, "type of media format %d (unknown)", tymed);
- return s_szBuf;
- }
+ // 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;
}
-#endif
+#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)
+{
+ static wxChar s_szBuf[128];
+ switch ( tymed ) {
+ case TYMED_HGLOBAL: return wxT("TYMED_HGLOBAL");
+ case TYMED_FILE: return wxT("TYMED_FILE");
+ case TYMED_ISTREAM: return wxT("TYMED_ISTREAM");
+ case TYMED_ISTORAGE: return wxT("TYMED_ISTORAGE");
+ case TYMED_GDI: return wxT("TYMED_GDI");
+ case TYMED_MFPICT: return wxT("TYMED_MFPICT");
+ case TYMED_ENHMF: return wxT("TYMED_ENHMF");
+ default:
+ wxSprintf(s_szBuf, wxT("type of media format %d (unknown)"), tymed);
+ return s_szBuf;
+ }
+}
+
+#endif // Debug
+
+#endif // not using OLE at all
projects / wxWidgets.git / blobdiff