include/wx/osx/dnd.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/mac/carbon/dnd.h
   3 // Purpose:     Declaration of the wxDropTarget, wxDropSource class etc.
   4 // Author:      Stefan Csomor
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 1998 Stefan Csomor
   7 // Licence:     wxWindows licence
   8 ///////////////////////////////////////////////////////////////////////////////
   9
  10 #ifndef _WX_DND_H_
  11 #define _WX_DND_H_
  12
  13 #if wxUSE_DRAG_AND_DROP
  14
  15 #include "wx/defs.h"
  16 #include "wx/object.h"
  17 #include "wx/string.h"
  18 #include "wx/string.h"
  19 #include "wx/dataobj.h"
  20 #include "wx/cursor.h"
  21
  22 //-------------------------------------------------------------------------
  23 // classes
  24 //-------------------------------------------------------------------------
  25
  26 class WXDLLIMPEXP_FWD_CORE wxWindow;
  27
  28 class WXDLLIMPEXP_FWD_CORE wxDropTarget;
  29 class WXDLLIMPEXP_FWD_CORE wxTextDropTarget;
  30 class WXDLLIMPEXP_FWD_CORE wxFileDropTarget;
  31
  32 class WXDLLIMPEXP_FWD_CORE wxDropSource;
  33
  34 // ----------------------------------------------------------------------------
  35 // macros
  36 // ----------------------------------------------------------------------------
  37
  38 // this macro may be used instead for wxDropSource ctor arguments: it will use
  39 // the icon 'name' from an XPM file under GTK, but will expand to something
  40 // else under MSW. If you don't use it, you will have to use #ifdef in the
  41 // application code.
  42 #define wxDROP_ICON(X)   wxCursor(X##_xpm)
  43
  44 //-------------------------------------------------------------------------
  45 // wxDropTarget
  46 //-------------------------------------------------------------------------
  47
  48 class WXDLLIMPEXP_CORE wxDropTarget: public wxDropTargetBase
  49 {
  50   public:
  51
  52     wxDropTarget(wxDataObject *dataObject = NULL );
  53
  54     virtual wxDragResult OnDragOver(wxCoord x, wxCoord y, wxDragResult def);
  55     virtual bool OnDrop(wxCoord x, wxCoord y);
  56     virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def);
  57     virtual bool GetData();
  58     // NOTE: This is needed by the generic wxDataViewCtrl, not sure how to implement.
  59     virtual wxDataFormat GetMatchingPair();
  60
  61     bool CurrentDragHasSupportedFormat() ;
  62     void SetCurrentDragPasteboard( void* dragpasteboard ) { m_currentDragPasteboard = dragpasteboard ; }
  63   protected :
  64     void* m_currentDragPasteboard ;
  65 };
  66
  67 //-------------------------------------------------------------------------
  68 // wxDropSource
  69 //-------------------------------------------------------------------------
  70
  71 class WXDLLIMPEXP_CORE wxDropSource: public wxDropSourceBase
  72 {
  73 public:
  74     // ctors: if you use default ctor you must call SetData() later!
  75     //
  76     // NB: the "wxWindow *win" parameter is unused and is here only for wxGTK
  77     //     compatibility, as well as both icon parameters
  78     wxDropSource( wxWindow *win = NULL,
  79                  const wxCursor &cursorCopy = wxNullCursor,
  80                  const wxCursor &cursorMove = wxNullCursor,
  81                  const wxCursor &cursorStop = wxNullCursor);
  82
  83     /* constructor for setting one data object */
  84     wxDropSource( wxDataObject& data,
  85                   wxWindow *win,
  86                  const wxCursor &cursorCopy = wxNullCursor,
  87                  const wxCursor &cursorMove = wxNullCursor,
  88                  const wxCursor &cursorStop = wxNullCursor);
  89
  90     virtual ~wxDropSource();
  91
  92     // do it (call this in response to a mouse button press, for example)
  93     // params: if bAllowMove is false, data can be only copied
  94     virtual wxDragResult DoDragDrop(int flags = wxDrag_CopyOnly);
  95
  96     wxWindow*     GetWindow() { return m_window ; }
  97     void SetCurrentDragPasteboard( void* dragpasteboard ) { m_currentDragPasteboard = dragpasteboard ; }
  98     bool MacInstallDefaultCursor(wxDragResult effect) ;
  99     static wxDropSource* GetCurrentDropSource();
 100   protected :
 101
 102     wxWindow        *m_window;
 103     void* m_currentDragPasteboard ;
 104 };
 105
 106 #endif // wxUSE_DRAG_AND_DROP
 107
 108 #endif
 109    //_WX_DND_H_