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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 | // macros | |
41 | // ---------------------------------------------------------------------------- | |
42 | ||
43 | // this macro may be used instead for wxDropSource ctor arguments: it will use | |
44 | // the icon 'name' from an XPM file under GTK, but will expand to something | |
45 | // else under MSW. If you don't use it, you will have to use #ifdef in the | |
46 | // application code. | |
47 | #define wxDROP_ICON(name) wxICON(name) | |
48 | ||
49 | //------------------------------------------------------------------------- | |
50 | // wxDropTarget | |
51 | //------------------------------------------------------------------------- | |
52 | ||
53 | class wxDropTarget: public wxDropTargetBase | |
54 | { | |
55 | public: | |
56 | wxDropTarget(wxDataObject *dataObject = (wxDataObject*) NULL ); | |
57 | ||
58 | virtual wxDragResult OnDragOver(wxCoord x, wxCoord y, wxDragResult def); | |
59 | virtual bool OnDrop(wxCoord x, wxCoord y); | |
60 | virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def); | |
61 | virtual bool GetData(); | |
62 | ||
63 | // implementation | |
64 | ||
65 | GdkAtom GetMatchingPair(); | |
66 | ||
67 | void RegisterWidget( GtkWidget *widget ); | |
68 | void UnregisterWidget( GtkWidget *widget ); | |
69 | ||
70 | GdkDragContext *m_dragContext; | |
71 | GtkWidget *m_dragWidget; | |
72 | GtkSelectionData *m_dragData; | |
73 | guint m_dragTime; | |
74 | bool m_firstMotion; // gdk has no "gdk_drag_enter" event | |
75 | ||
76 | void SetDragContext( GdkDragContext *dc ) { m_dragContext = dc; } | |
77 | void SetDragWidget( GtkWidget *w ) { m_dragWidget = w; } | |
78 | void SetDragData( GtkSelectionData *sd ) { m_dragData = sd; } | |
79 | void SetDragTime( guint time ) { m_dragTime = time; } | |
80 | }; | |
81 | ||
82 | //------------------------------------------------------------------------- | |
83 | // wxDropSource | |
84 | //------------------------------------------------------------------------- | |
85 | ||
86 | class wxDropSource: public wxDropSourceBase | |
87 | { | |
88 | public: | |
89 | // constructor. set data later with SetData() | |
90 | wxDropSource( wxWindow *win = (wxWindow *)NULL, | |
91 | const wxIcon © = wxNullIcon, | |
92 | const wxIcon &move = wxNullIcon, | |
93 | const wxIcon &none = wxNullIcon); | |
94 | ||
95 | // constructor for setting one data object | |
96 | wxDropSource( wxDataObject& data, | |
97 | wxWindow *win, | |
98 | const wxIcon © = wxNullIcon, | |
99 | const wxIcon &move = wxNullIcon, | |
100 | const wxIcon &none = wxNullIcon); | |
101 | ||
102 | virtual ~wxDropSource(); | |
103 | ||
104 | // start drag action | |
105 | virtual wxDragResult DoDragDrop(int flags = wxDrag_CopyOnly); | |
106 | ||
107 | // GTK implementation | |
108 | void RegisterWindow(); | |
109 | void UnregisterWindow(); | |
110 | ||
111 | void PrepareIcon( int action, GdkDragContext *context ); | |
112 | ||
113 | GtkWidget *m_widget; | |
114 | GtkWidget *m_iconWindow; | |
115 | GdkDragContext *m_dragContext; | |
116 | wxWindow *m_window; | |
117 | ||
118 | wxDragResult m_retValue; | |
119 | wxIcon m_iconCopy, | |
120 | m_iconMove, | |
121 | m_iconNone; | |
122 | ||
123 | bool m_waiting; | |
124 | ||
125 | private: | |
126 | // common part of both ctors | |
127 | void SetIcons(const wxIcon& copy, | |
128 | const wxIcon& move, | |
129 | const wxIcon& none); | |
130 | }; | |
131 | ||
132 | #endif // wxUSE_DRAG_AND_DROP | |
133 | ||
134 | #endif //__GTKDNDH__ | |
135 |