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[wxWidgets.git] / 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