include/wx/cocoa/dataobj2.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/cocoa/dataobj2.h
   3 // Purpose:     declaration of standard wxDataObjectSimple-derived classes
   4 // Author:      David Elliott <dfe@cox.net>
   5 // Modified by:
   6 // Created:     2003/07/23
   7 // Copyright:   (c) 2003 David Elliott
   8 // Licence:     wxWindows licence
   9 ///////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef __WX_COCOA_DATAOBJ2_H__
  12 #define __WX_COCOA_DATAOBJ2_H__
  13
  14 //=========================================================================
  15 // wxBitmapDataObject is a specialization of wxDataObject for bitmaps
  16 //=========================================================================
  17 class WXDLLIMPEXP_CORE wxBitmapDataObject : public wxBitmapDataObjectBase
  18 {
  19 public:
  20     // ctors
  21     wxBitmapDataObject();
  22     wxBitmapDataObject(const wxBitmap& bitmap);
  23
  24     // destr
  25     virtual ~wxBitmapDataObject();
  26
  27     // override base class virtual to update PNG data too
  28     virtual void SetBitmap(const wxBitmap& bitmap);
  29
  30     // implement base class pure virtuals
  31     // ----------------------------------
  32
  33     virtual size_t GetDataSize() const { return m_pngSize; }
  34     virtual bool GetDataHere(void *buf) const;
  35     virtual bool SetData(size_t len, const void *buf);
  36
  37 protected:
  38     void Init() { m_pngData = NULL; m_pngSize = 0; }
  39     void Clear() { free(m_pngData); }
  40     void ClearAll() { Clear(); Init(); }
  41
  42     size_t      m_pngSize;
  43     void       *m_pngData;
  44
  45     void DoConvertToPng();
  46
  47 private:
  48     // virtual function hiding supression
  49     size_t GetDataSize(const wxDataFormat& format) const
  50         { return(wxDataObjectSimple::GetDataSize(format)); }
  51     bool GetDataHere(const wxDataFormat& format, void* pBuf) const
  52         { return(wxDataObjectSimple::GetDataHere(format, pBuf)); }
  53     bool SetData(const wxDataFormat& format, size_t nLen, const void* pBuf)
  54         { return(wxDataObjectSimple::SetData(format, nLen, pBuf)); }
  55 };
  56
  57 //=========================================================================
  58 // wxFileDataObject is a specialization of wxDataObject for file names
  59 //=========================================================================
  60
  61 class WXDLLIMPEXP_CORE wxFileDataObject : public wxFileDataObjectBase
  62 {
  63 public:
  64     // implement base class pure virtuals
  65     // ----------------------------------
  66
  67     void AddFile( const wxString &filename );
  68
  69     virtual size_t GetDataSize() const;
  70     virtual bool GetDataHere(void *buf) const;
  71     virtual bool SetData(size_t len, const void *buf);
  72
  73 private:
  74     // virtual function hiding supression
  75     size_t GetDataSize(const wxDataFormat& format) const
  76         { return(wxDataObjectSimple::GetDataSize(format)); }
  77     bool GetDataHere(const wxDataFormat& format, void* pBuf) const
  78         { return(wxDataObjectSimple::GetDataHere(format, pBuf)); }
  79     bool SetData(const wxDataFormat& format, size_t nLen, const void* pBuf)
  80         { return(wxDataObjectSimple::SetData(format, nLen, pBuf)); }
  81 };
  82
  83 #endif //__WX_COCOA_DATAOBJ2_H__