include/wx/gtk/dnd.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        dnd.h
   3 // Purpose:     declaration of the wxDropTarget class
   4 // Author:      Robert Roebling
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 1998 Vadim Zeitlin, Robert Roebling
   7 // Licence:     wxWindows license
   8 ///////////////////////////////////////////////////////////////////////////////
   9
  10
  11 #ifndef __GTKDNDH__
  12 #define __GTKDNDH__
  13
  14 #ifdef __GNUG__
  15 #pragma interface
  16 #endif
  17
  18 #if wxUSE_DRAG_AND_DROP
  19
  20 #include "wx/object.h"
  21 #include "wx/string.h"
  22 #include "wx/dataobj.h"
  23 #include "wx/cursor.h"
  24 #include "wx/icon.h"
  25 #include "wx/gdicmn.h"
  26
  27 //-------------------------------------------------------------------------
  28 // classes
  29 //-------------------------------------------------------------------------
  30
  31 class wxWindow;
  32
  33 class wxDropTarget;
  34 class wxTextDropTarget;
  35 class wxFileDropTarget;
  36
  37 class wxDropSource;
  38
  39 //-------------------------------------------------------------------------
  40 // wxDropTarget
  41 //-------------------------------------------------------------------------
  42
  43 class wxDropTarget: public wxDropTargetBase
  44 {
  45 public:
  46     wxDropTarget(wxDataObject *dataObject = (wxDataObject*) NULL );
  47
  48     virtual wxDragResult OnDragOver(wxCoord x, wxCoord y, wxDragResult def);
  49     virtual bool OnDrop(wxCoord x, wxCoord y);
  50     virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def);
  51     virtual bool GetData();
  52
  53   // implementation
  54
  55     GdkAtom GetMatchingPair();
  56
  57     void RegisterWidget( GtkWidget *widget );
  58     void UnregisterWidget( GtkWidget *widget );
  59
  60     GdkDragContext     *m_dragContext;
  61     GtkWidget          *m_dragWidget;
  62     GtkSelectionData   *m_dragData;
  63     guint               m_dragTime;
  64     bool                m_firstMotion;     /* gdk has no "gdk_drag_enter" event */
  65
  66     void SetDragContext( GdkDragContext *dc ) { m_dragContext = dc; }
  67     void SetDragWidget( GtkWidget *w ) { m_dragWidget = w; }
  68     void SetDragData( GtkSelectionData *sd ) { m_dragData = sd; }
  69     void SetDragTime( guint time ) { m_dragTime = time; }
  70 };
  71
  72 //-------------------------------------------------------------------------
  73 // wxDropSource
  74 //-------------------------------------------------------------------------
  75
  76 class wxDropSource: public wxDropSourceBase
  77 {
  78 public:
  79     /* constructor. set data later with SetData() */
  80     wxDropSource( wxWindow *win,
  81                   const wxIcon &go = wxNullIcon );
  82
  83     /* constructor for setting one data object */
  84     wxDropSource( wxDataObject& data,
  85                   wxWindow *win,
  86                   const wxIcon &go = wxNullIcon );
  87
  88     ~wxDropSource();
  89
  90     /* start drag action */
  91     virtual wxDragResult DoDragDrop( bool bAllowMove = FALSE );
  92
  93     /* GTK implementation */
  94     void RegisterWindow();
  95     void UnregisterWindow();
  96
  97     void PrepareIcon( int hot_x, int hot_y, GdkDragContext *context );
  98
  99     GtkWidget       *m_widget;
 100     GtkWidget       *m_iconWindow;
 101     GdkDragContext  *m_dragContext;
 102     wxWindow        *m_window;
 103
 104     wxDragResult     m_retValue;
 105     wxIcon           m_icon;
 106
 107     bool             m_waiting;
 108 };
 109
 110 #endif
 111
 112    // wxUSE_DRAG_AND_DROP
 113
 114 #endif
 115        //__GTKDNDH__
 116