+ wxDataFormat m_receivedFormat;
+
+ wxDECLARE_NO_COPY_CLASS(wxDataObjectComposite);
+};
+
+// ============================================================================
+// Standard implementations of wxDataObjectSimple which can be used directly
+// (i.e. without having to derive from them) for standard data type transfers.
+//
+// Note that although all of them can work with provided data, you can also
+// override their virtual GetXXX() functions to only provide data on demand.
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// wxTextDataObject contains text data
+// ----------------------------------------------------------------------------
+
+#if wxUSE_UNICODE
+ #if defined(__WXGTK20__)
+ #define wxNEEDS_UTF8_FOR_TEXT_DATAOBJ
+ #elif defined(__WXMAC__)
+ #define wxNEEDS_UTF16_FOR_TEXT_DATAOBJ
+ #endif
+#endif // wxUSE_UNICODE
+
+class WXDLLIMPEXP_CORE wxTextDataObject : public wxDataObjectSimple
+{
+public:
+ // ctor: you can specify the text here or in SetText(), or override
+ // GetText()
+ wxTextDataObject(const wxString& text = wxEmptyString)
+ : wxDataObjectSimple(
+#if wxUSE_UNICODE
+ wxDF_UNICODETEXT
+#else
+ wxDF_TEXT
+#endif
+ ),
+ m_text(text)
+ {
+ }
+
+ // virtual functions which you may override if you want to provide text on
+ // demand only - otherwise, the trivial default versions will be used
+ virtual size_t GetTextLength() const { return m_text.Len() + 1; }
+ virtual wxString GetText() const { return m_text; }
+ virtual void SetText(const wxString& text) { m_text = text; }
+
+ // implement base class pure virtuals
+ // ----------------------------------
+
+ // some platforms have 2 and not 1 format for text data
+#if defined(wxNEEDS_UTF8_FOR_TEXT_DATAOBJ) || defined(wxNEEDS_UTF16_FOR_TEXT_DATAOBJ)
+ virtual size_t GetFormatCount(Direction WXUNUSED(dir) = Get) const { return 2; }
+ virtual void GetAllFormats(wxDataFormat *formats,
+ wxDataObjectBase::Direction WXUNUSED(dir) = Get) const;
+
+ virtual size_t GetDataSize() const { return GetDataSize(GetPreferredFormat()); }
+ virtual bool GetDataHere(void *buf) const { return GetDataHere(GetPreferredFormat(), buf); }
+ virtual bool SetData(size_t len, const void *buf) { return SetData(GetPreferredFormat(), len, buf); }
+
+ size_t GetDataSize(const wxDataFormat& format) const;
+ bool GetDataHere(const wxDataFormat& format, void *pBuf) const;
+ bool SetData(const wxDataFormat& format, size_t nLen, const void* pBuf);
+#else // !wxNEEDS_UTF{8,16}_FOR_TEXT_DATAOBJ
+ virtual size_t GetDataSize() const;
+ virtual bool GetDataHere(void *buf) const;
+ virtual bool SetData(size_t len, const void *buf);
+ // Must provide overloads to avoid hiding them (and warnings about it)
+ virtual size_t GetDataSize(const wxDataFormat&) const
+ {
+ return GetDataSize();
+ }
+ virtual bool GetDataHere(const wxDataFormat&, void *buf) const
+ {
+ return GetDataHere(buf);
+ }
+ virtual bool SetData(const wxDataFormat&, size_t len, const void *buf)
+ {
+ return SetData(len, buf);
+ }
+#endif // different wxTextDataObject implementations
+
+private:
+ wxString m_text;
+
+ wxDECLARE_NO_COPY_CLASS(wxTextDataObject);
+};
+
+// ----------------------------------------------------------------------------
+// wxBitmapDataObject contains a bitmap
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_CORE wxBitmapDataObjectBase : public wxDataObjectSimple
+{
+public:
+ // ctor: you can specify the bitmap here or in SetBitmap(), or override
+ // GetBitmap()
+ wxBitmapDataObjectBase(const wxBitmap& bitmap = wxNullBitmap)
+ : wxDataObjectSimple(wxDF_BITMAP), m_bitmap(bitmap)
+ {
+ }
+
+ // virtual functions which you may override if you want to provide data on
+ // demand only - otherwise, the trivial default versions will be used
+ virtual wxBitmap GetBitmap() const { return m_bitmap; }
+ virtual void SetBitmap(const wxBitmap& bitmap) { m_bitmap = bitmap; }
+
+protected:
+ wxBitmap m_bitmap;
+
+ wxDECLARE_NO_COPY_CLASS(wxBitmapDataObjectBase);
+};
+
+// ----------------------------------------------------------------------------
+// wxFileDataObject contains a list of filenames
+//
+// NB: notice that this is a "write only" object, it can only be filled with
+// data from drag and drop operation.
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_CORE wxFileDataObjectBase : public wxDataObjectSimple
+{
+public:
+ // ctor: use AddFile() later to fill the array
+ wxFileDataObjectBase() : wxDataObjectSimple(wxDF_FILENAME) { }
+
+ // get a reference to our array
+ const wxArrayString& GetFilenames() const { return m_filenames; }
+
+protected:
+ wxArrayString m_filenames;
+
+ wxDECLARE_NO_COPY_CLASS(wxFileDataObjectBase);
projects / wxWidgets.git / blobdiff