include/wx/x11/dataobj2.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/x11/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 // Copyright:   (c) 1998, 1999 Vadim Zeitlin, Robert Roebling
   7 // Licence:     wxWindows licence
   8 ///////////////////////////////////////////////////////////////////////////////
   9
  10 #ifndef _WX_X11_DATAOBJ2_H_
  11 #define _WX_X11_DATAOBJ2_H_
  12
  13 // ----------------------------------------------------------------------------
  14 // wxBitmapDataObject is a specialization of wxDataObject for bitmaps
  15 // ----------------------------------------------------------------------------
  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     // Must provide overloads to avoid hiding them (and warnings about it)
  37     virtual size_t GetDataSize(const wxDataFormat&) const
  38     {
  39         return GetDataSize();
  40     }
  41     virtual bool GetDataHere(const wxDataFormat&, void *buf) const
  42     {
  43         return GetDataHere(buf);
  44     }
  45     virtual bool SetData(const wxDataFormat&, size_t len, const void *buf)
  46     {
  47         return SetData(len, buf);
  48     }
  49
  50 protected:
  51     void Init() { m_pngData = NULL; m_pngSize = 0; }
  52     void Clear() { free(m_pngData); }
  53     void ClearAll() { Clear(); Init(); }
  54
  55     size_t      m_pngSize;
  56     void       *m_pngData;
  57
  58     void DoConvertToPng();
  59 };
  60
  61 // ----------------------------------------------------------------------------
  62 // wxFileDataObject is a specialization of wxDataObject for file names
  63 // ----------------------------------------------------------------------------
  64
  65 class WXDLLIMPEXP_CORE wxFileDataObject : public wxFileDataObjectBase
  66 {
  67 public:
  68     // implement base class pure virtuals
  69     // ----------------------------------
  70
  71     void AddFile( const wxString &filename );
  72
  73     virtual size_t GetDataSize() const;
  74     virtual bool GetDataHere(void *buf) const;
  75     virtual bool SetData(size_t len, const void *buf);
  76     // Must provide overloads to avoid hiding them (and warnings about it)
  77     virtual size_t GetDataSize(const wxDataFormat&) const
  78     {
  79         return GetDataSize();
  80     }
  81     virtual bool GetDataHere(const wxDataFormat&, void *buf) const
  82     {
  83         return GetDataHere(buf);
  84     }
  85     virtual bool SetData(const wxDataFormat&, size_t len, const void *buf)
  86     {
  87         return SetData(len, buf);
  88     }
  89 };
  90
  91 #endif // _WX_X11_DATAOBJ2_H_
  92