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     // implement base class pure virtuals
  36     // ----------------------------------
  37
  38     virtual size_t GetDataSize() const { return m_pngSize; }
  39     virtual bool GetDataHere(void *buf) const;
  40     virtual bool SetData(size_t len, const void *buf);
  41
  42 protected:
  43     void Init() { m_pngData = (void *)NULL; m_pngSize = 0; }
  44     void Clear() { free(m_pngData); }
  45     void ClearAll() { Clear(); Init(); }
  46
  47     size_t      m_pngSize;
  48     void       *m_pngData;
  49
  50     void DoConvertToPng();
  51
  52 private:
  53     // virtual function hiding supression
  54     size_t GetDataSize(const wxDataFormat& format) const
  55         { return(wxDataObjectSimple::GetDataSize(format)); }
  56     bool GetDataHere(const wxDataFormat& format, void* pBuf) const
  57         { return(wxDataObjectSimple::GetDataHere(format, pBuf)); }
  58     bool SetData(const wxDataFormat& format, size_t nLen, const void* pBuf)
  59         { return(wxDataObjectSimple::SetData(format, nLen, pBuf)); }
  60 };
  61
  62 // ----------------------------------------------------------------------------
  63 // wxFileDataObject is a specialization of wxDataObject for file names
  64 // ----------------------------------------------------------------------------
  65
  66 class 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
  78 private:
  79     // virtual function hiding supression
  80     size_t GetDataSize(const wxDataFormat& format) const
  81         { return(wxDataObjectSimple::GetDataSize(format)); }
  82     bool GetDataHere(const wxDataFormat& format, void* pBuf) const
  83         { return(wxDataObjectSimple::GetDataHere(format, pBuf)); }
  84     bool SetData(const wxDataFormat& format, size_t nLen, const void* pBuf)
  85         { return(wxDataObjectSimple::SetData(format, nLen, pBuf)); }
  86 };
  87
  88 #endif // _WX_GTK_DATAOBJ2_H_
  89