include/wx/os2/dataobj2.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        os2/dataobj2.h
   3 // Purpose:     declaration of standard wxDataObjectSimple-derived classes
   4 // Author:      David Webster (adapted from Robert Roebling's gtk port
   5 // Modified by:
   6 // Created:     10/21/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998, 1999 Vadim Zeitlin, Robert Roebling
   9 // Licence:     wxWindows license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_GTK_DATAOBJ2_H_
  13 #define _WX_GTK_DATAOBJ2_H_
  14
  15 #ifdef __GNUG__
  16     #pragma interface "dataobj.h"
  17 #endif
  18
  19 // ----------------------------------------------------------------------------
  20 // wxBitmapDataObject is a specialization of wxDataObject for bitmaps
  21 // ----------------------------------------------------------------------------
  22
  23 class wxBitmapDataObject : public wxBitmapDataObjectBase
  24 {
  25 public:
  26     // ctors
  27     wxBitmapDataObject();
  28     wxBitmapDataObject(const wxBitmap& bitmap);
  29
  30     // destr
  31     ~wxBitmapDataObject();
  32
  33     // override base class virtual to update PNG data too
  34     virtual void SetBitmap(const wxBitmap& bitmap);
  35
  36     // implement base class pure virtuals
  37     // ----------------------------------
  38
  39     virtual size_t GetDataSize() const { return m_pngSize; }
  40     virtual bool GetDataHere(void *buf) const;
  41     virtual bool SetData(size_t len, const void *buf);
  42
  43 protected:
  44     void Init() { m_pngData = (void *)NULL; m_pngSize = 0; }
  45     void Clear() { free(m_pngData); }
  46     void ClearAll() { Clear(); Init(); }
  47
  48     size_t      m_pngSize;
  49     void       *m_pngData;
  50
  51     void DoConvertToPng();
  52
  53 private:
  54     // Virtual function hiding supression
  55     size_t GetDataSize(const wxDataFormat& rFormat) const
  56     { return(wxDataObjectSimple::GetDataSize(rFormat)); }
  57     bool GetDataHere(const wxDataFormat& rFormat, void* pBuf) const
  58     { return(wxDataObjectSimple::GetDataHere(rFormat, pBuf)); }
  59     bool SetData(const wxDataFormat& rFormat, size_t nLen, const void* pBuf)
  60     { return(wxDataObjectSimple::SetData(rFormat, nLen, pBuf)); }
  61 };
  62
  63 // ----------------------------------------------------------------------------
  64 // wxFileDataObject is a specialization of wxDataObject for file names
  65 // ----------------------------------------------------------------------------
  66
  67 class wxFileDataObject : public wxFileDataObjectBase
  68 {
  69 public:
  70     // implement base class pure virtuals
  71     // ----------------------------------
  72
  73     void AddFile( const wxString &filename );
  74
  75     virtual size_t GetDataSize() const;
  76     virtual bool GetDataHere(void *buf) const;
  77     virtual bool SetData(size_t len, const void *buf);
  78
  79 private:
  80     // Virtual function hiding supression
  81     size_t GetDataSize(const wxDataFormat& rFormat) const
  82     { return(wxDataObjectSimple::GetDataSize(rFormat)); }
  83     bool GetDataHere(const wxDataFormat& rFormat, void* pBuf) const
  84     { return(wxDataObjectSimple::GetDataHere(rFormat, pBuf)); }
  85     bool SetData(const wxDataFormat& rFormat, size_t nLen, const void* pBuf)
  86     { return(wxDataObjectSimple::SetData(rFormat, nLen, pBuf)); }
  87 };
  88
  89 #endif // _WX_GTK_DATAOBJ2_H_
  90