+// ----------------------------------------------------------------------------
+// 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;
+
+ DECLARE_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;
+
+ DECLARE_NO_COPY_CLASS(wxFileDataObjectBase)
+};
+
+// ----------------------------------------------------------------------------
+// wxCustomDataObject contains arbitrary untyped user data.
+//
+// It is understood that this data can be copied bitwise.
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_CORE wxCustomDataObject : public wxDataObjectSimple
+{
+public:
+ // if you don't specify the format in the ctor, you can still use
+ // SetFormat() later
+ wxCustomDataObject(const wxDataFormat& format = wxFormatInvalid);
+
+ // the dtor calls Free()
+ virtual ~wxCustomDataObject();
+
+ // you can call SetData() to set m_data: it will make a copy of the data
+ // you pass - or you can use TakeData() which won't copy anything, but
+ // will take ownership of data (i.e. will call Free() on it later)
+ void TakeData(size_t size, void *data);
+
+ // this function is called to allocate "size" bytes of memory from
+ // SetData(). The default version uses operator new[].
+ virtual void *Alloc(size_t size);
+
+ // this function is called when the data is freed, you may override it to
+ // anything you want (or may be nothing at all). The default version calls
+ // operator delete[] on m_data
+ virtual void Free();
+
+ // get data: you may override these functions if you wish to provide data
+ // only when it's requested
+ virtual size_t GetSize() const { return m_size; }
+ virtual void *GetData() const { return m_data; }
+
+ // implement base class pure virtuals
+ // ----------------------------------
+ virtual size_t GetDataSize() const;
+ virtual bool GetDataHere(void *buf) const;
+ virtual bool SetData(size_t size, 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);
+ }
+
+private:
+ size_t m_size;
+ void *m_data;
+
+ DECLARE_NO_COPY_CLASS(wxCustomDataObject)
projects / wxWidgets.git / blobdiff