///////////////////////////////////////////////////////////////////////////////
-// Name: ole/dataobj.h
+// Name: wx/msw/ole/dataobj.h
// Purpose: declaration of the wxDataObject 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>
-// Licence: wxWindows license
+// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
-#ifndef _OLEDATAOBJ_H
-#define _OLEDATAOBJ_H
+#ifndef _WX_MSW_OLE_DATAOBJ_H
+#define _WX_MSW_OLE_DATAOBJ_H
// ----------------------------------------------------------------------------
// forward declarations
// ----------------------------------------------------------------------------
+
struct IDataObject;
// ----------------------------------------------------------------------------
// wxDataObject is a "smart" and polymorphic piece of data.
-//
-// @@@ it's currently "read-only" from COM point of view, i.e. we don't support
-// SetData. We don't support all advise functions neither (but it's easy to
-// do if we really want them)
// ----------------------------------------------------------------------------
-class wxDataObject
+class WXDLLIMPEXP_CORE wxDataObject : public wxDataObjectBase
{
public:
- // all data formats (values are the same as in windows.h, do not change!)
- enum StdFormat
- {
- Invalid,
- Text,
- Bitmap,
- MetafilePict,
- Sylk,
- Dif,
- Tiff,
- OemText,
- Dib,
- Palette,
- Pendata,
- Riff,
- Wave,
- UnicodeText,
- EnhMetafile,
- Hdrop,
- Locale,
- Max
- };
+ // ctor & dtor
+ wxDataObject();
+ virtual ~wxDataObject();
- #ifdef __DEBUG__
- // function to return symbolic name of clipboard format (debug messages)
- static const char *GetFormatName(wxDataFormat format);
- #else // not used in release mode
- #define GetFormatName(format) ""
- #endif
+ // retrieve IDataObject interface (for other OLE related classes)
+ IDataObject *GetInterface() const { return m_pIDataObject; }
- // ctor & dtor
- wxDataObject();
- ~wxDataObject();
+ // tell the object that it should be now owned by IDataObject - i.e. when
+ // it is deleted, it should delete us as well
+ void SetAutoDelete();
- // pure virtuals to override
- // get the best suited format for our data
- virtual wxDataFormat GetPreferredFormat() const = 0;
- // decide if we support this format (should be one of values of
- // StdFormat enumerations or a user-defined format)
- virtual bool IsSupportedFormat(wxDataFormat format) const = 0;
- // get the (total) size of data
- virtual uint GetDataSize() const = 0;
- // copy raw data to provided pointer
- virtual void GetDataHere(void *pBuf) const = 0;
+ // return true if we support this format in "Get" direction
+ bool IsSupportedFormat(const wxDataFormat& format) const
+ { return wxDataObjectBase::IsSupported(format, Get); }
- // accessors
- // retrieve IDataObject interface (for other OLE related classes)
- IDataObject *GetInterface() const { return m_pIDataObject; }
+ // if this method returns false, this wxDataObject will be copied to
+ // the clipboard with its size prepended to it, which is compatible with
+ // older wx versions
+ //
+ // if returns true, then this wxDataObject will be copied to the clipboard
+ // without any additional information and ::HeapSize() function will be used
+ // to get the size of that data
+ virtual bool NeedsVerbatimData(const wxDataFormat& WXUNUSED(format)) const
+ {
+ // return false from here only for compatibility with earlier wx versions
+ return true;
+ }
-private:
- IDataObject *m_pIDataObject; // pointer to the COM interface
-};
+ // function to return symbolic name of clipboard format (for debug messages)
+#ifdef __WXDEBUG__
+ static const wxChar *GetFormatName(wxDataFormat format);
-// ----------------------------------------------------------------------------
-// wxTextDataObject is a specialization of wxDataObject for text data
-// ----------------------------------------------------------------------------
-class wxTextDataObject : public wxDataObject
-{
+ #define wxGetFormatName(format) wxDataObject::GetFormatName(format)
+#else // !Debug
+ #define wxGetFormatName(format) wxT("")
+#endif // Debug/!Debug
+ // they need to be accessed from wxIDataObject, so made them public,
+ // or wxIDataObject friend
public:
- // ctors
- wxTextDataObject();
- wxTextDataObject(const wxString& strText) : m_strText(strText) { }
- void Init(const wxString& strText) { m_strText = strText; }
-
- // implement base class pure virtuals
- virtual wxDataFormat GetPreferredFormat() const
- { return wxDataObject::Text; }
- virtual bool IsSupportedFormat(wxDataFormat format) const
- { return format == wxDataObject::Text || format == wxDataObject::Locale; }
- virtual uint GetDataSize() const
- { return m_strText.Len() + 1; } // +1 for trailing '\0'of course
- virtual void GetDataHere(void *pBuf) const
- { memcpy(pBuf, m_strText.c_str(), GetDataSize()); }
+ virtual const void* GetSizeFromBuffer( const void* buffer, size_t* size,
+ const wxDataFormat& format );
+ virtual void* SetSizeInBuffer( void* buffer, size_t size,
+ const wxDataFormat& format );
+ virtual size_t GetBufferOffset( const wxDataFormat& format );
private:
- wxString m_strText;
-};
+ IDataObject *m_pIDataObject; // pointer to the COM interface
-// ----------------------------------------------------------------------------
-// @@@ TODO: wx{Bitmap|Metafile|...}DataObject
-// ----------------------------------------------------------------------------
+ wxDECLARE_NO_COPY_CLASS(wxDataObject);
+};
-#endif //_OLEDATAOBJ_H
+#endif //_WX_MSW_OLE_DATAOBJ_H
projects / wxWidgets.git / blobdiff