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 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2003 David Elliott
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef __WX_COCOA_DATAOBJ2_H__
  13 #define __WX_COCOA_DATAOBJ2_H__
  14
  15 //=========================================================================
  16 // wxBitmapDataObject is a specialization of wxDataObject for bitmaps
  17 //=========================================================================
  18 class 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 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_COCOA_DATAOBJ2_H__