include/wx/gtk1/dataobj2.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/gtk1/dataobj2.h
   3 // Purpose:     declaration of standard wxDataObjectSimple-derived classes
   4 // Author:      Robert Roebling
   5 // Created:     19.10.99 (extracted from gtk/dataobj.h)
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 1998, 1999 Vadim Zeitlin, Robert Roebling
   8 // Licence:     wxWindows licence
   9 ///////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef _WX_GTK_DATAOBJ2_H_
  12 #define _WX_GTK_DATAOBJ2_H_
  13
  14 // ----------------------------------------------------------------------------
  15 // wxBitmapDataObject is a specialization of wxDataObject for bitmaps
  16 // ----------------------------------------------------------------------------
  17
  18 class WXDLLIMPEXP_CORE wxBitmapDataObject : public wxBitmapDataObjectBase
  19 {
  20 public:
  21     // ctors
  22     wxBitmapDataObject();
  23     wxBitmapDataObject(const wxBitmap& bitmap);
  24
  25     // destr
  26     ~wxBitmapDataObject();
  27
  28     // override base class virtual to update PNG data too
  29     virtual void SetBitmap(const wxBitmap& bitmap);
  30
  31     // implement base class pure virtuals
  32     // ----------------------------------
  33
  34     virtual size_t GetDataSize() const { return m_pngSize; }
  35     virtual bool GetDataHere(void *buf) const;
  36     virtual bool SetData(size_t len, const void *buf);
  37
  38 protected:
  39     void Init() { m_pngData = (void *)NULL; m_pngSize = 0; }
  40     void Clear() { free(m_pngData); }
  41     void ClearAll() { Clear(); Init(); }
  42
  43     size_t      m_pngSize;
  44     void       *m_pngData;
  45
  46     void DoConvertToPng();
  47
  48 private:
  49     // virtual function hiding supression
  50     size_t GetDataSize(const wxDataFormat& format) const
  51         { return(wxDataObjectSimple::GetDataSize(format)); }
  52     bool GetDataHere(const wxDataFormat& format, void* pBuf) const
  53         { return(wxDataObjectSimple::GetDataHere(format, pBuf)); }
  54     bool SetData(const wxDataFormat& format, size_t nLen, const void* pBuf)
  55         { return(wxDataObjectSimple::SetData(format, nLen, pBuf)); }
  56 };
  57
  58 // ----------------------------------------------------------------------------
  59 // wxFileDataObject is a specialization of wxDataObject for file names
  60 // ----------------------------------------------------------------------------
  61
  62 class WXDLLIMPEXP_CORE wxFileDataObject : public wxFileDataObjectBase
  63 {
  64 public:
  65     // implement base class pure virtuals
  66     // ----------------------------------
  67
  68     void AddFile( const wxString &filename );
  69
  70     virtual size_t GetDataSize() const;
  71     virtual bool GetDataHere(void *buf) const;
  72     virtual bool SetData(size_t len, const void *buf);
  73
  74 private:
  75     // virtual function hiding supression
  76     size_t GetDataSize(const wxDataFormat& format) const
  77         { return(wxDataObjectSimple::GetDataSize(format)); }
  78     bool GetDataHere(const wxDataFormat& format, void* pBuf) const
  79         { return(wxDataObjectSimple::GetDataHere(format, pBuf)); }
  80     bool SetData(const wxDataFormat& format, size_t nLen, const void* pBuf)
  81         { return(wxDataObjectSimple::SetData(format, nLen, pBuf)); }
  82 };
  83
  84 #endif // _WX_GTK_DATAOBJ2_H_
  85