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 license
   9 ///////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef _WX_GTK_DATAOBJ2_H_
  12 #define _WX_GTK_DATAOBJ2_H_
  13
  14 #ifdef __GNUG__
  15     #pragma interface "dataobj.h"
  16 #endif
  17
  18 // ----------------------------------------------------------------------------
  19 // wxBitmapDataObject is a specialization of wxDataObject for bitmaps
  20 // ----------------------------------------------------------------------------
  21
  22 class wxBitmapDataObject : public wxBitmapDataObjectBase
  23 {
  24 public:
  25     // ctors
  26     wxBitmapDataObject();
  27     wxBitmapDataObject(const wxBitmap& bitmap);
  28
  29     // destr
  30     ~wxBitmapDataObject();
  31
  32     // override base class virtual to update PNG data too
  33     virtual void SetBitmap(const wxBitmap& bitmap);
  34
  35     void *GetPngData() const { return m_pngData; }
  36
  37     // implement base class pure virtuals
  38     // ----------------------------------
  39
  40     virtual size_t GetDataSize() const { return m_pngSize; }
  41     virtual bool GetDataHere(void *buf) const;
  42     virtual bool SetData(size_t len, const void *buf);
  43
  44 protected:
  45     void Init() { m_pngData = (void *)NULL; m_pngSize = 0; }
  46     void Clear() { free(m_pngData); }
  47     void ClearAll() { Clear(); Init(); }
  48
  49 private:
  50     size_t      m_pngSize;
  51     void       *m_pngData;
  52
  53     void DoConvertToPng();
  54 };
  55
  56 // ----------------------------------------------------------------------------
  57 // wxFileDataObject is a specialization of wxDataObject for file names
  58 // ----------------------------------------------------------------------------
  59
  60 class wxFileDataObject : public wxFileDataObjectBase
  61 {
  62 public:
  63     // implement base class pure virtuals
  64     // ----------------------------------
  65
  66     virtual size_t GetDataSize() const;
  67     virtual bool GetDataHere(void *buf) const;
  68     virtual bool SetData(size_t len, const void *buf);
  69 };
  70
  71 #endif // _WX_GTK_DATAOBJ2_H_
  72