include/wx/gtk/dataobj2.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        gtk/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     // Must provide overloads to avoid hiding them (and warnings about it)
  38     virtual size_t GetDataSize(const wxDataFormat&) const
  39     {
  40         return GetDataSize();
  41     }
  42     virtual bool GetDataHere(const wxDataFormat&, void *buf) const
  43     {
  44         return GetDataHere(buf);
  45     }
  46     virtual bool SetData(const wxDataFormat&, size_t len, const void *buf)
  47     {
  48         return SetData(len, buf);
  49     }
  50
  51 protected:
  52     void Init() { m_pngData = (void *)NULL; m_pngSize = 0; }
  53     void Clear() { free(m_pngData); }
  54     void ClearAll() { Clear(); Init(); }
  55
  56     size_t      m_pngSize;
  57     void       *m_pngData;
  58
  59     void DoConvertToPng();
  60 };
  61
  62 // ----------------------------------------------------------------------------
  63 // wxFileDataObject is a specialization of wxDataObject for file names
  64 // ----------------------------------------------------------------------------
  65
  66 class WXDLLIMPEXP_CORE wxFileDataObject : public wxFileDataObjectBase
  67 {
  68 public:
  69     // implement base class pure virtuals
  70     // ----------------------------------
  71
  72     void AddFile( const wxString &filename );
  73
  74     virtual size_t GetDataSize() const;
  75     virtual bool GetDataHere(void *buf) const;
  76     virtual bool SetData(size_t len, const void *buf);
  77     // Must provide overloads to avoid hiding them (and warnings about it)
  78     virtual size_t GetDataSize(const wxDataFormat&) const
  79     {
  80         return GetDataSize();
  81     }
  82     virtual bool GetDataHere(const wxDataFormat&, void *buf) const
  83     {
  84         return GetDataHere(buf);
  85     }
  86     virtual bool SetData(const wxDataFormat&, size_t len, const void *buf)
  87     {
  88         return SetData(len, buf);
  89     }
  90 };
  91
  92 #endif // _WX_GTK_DATAOBJ2_H_
  93