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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 licence | |
8 | /////////////////////////////////////////////////////////////////////////////// | |
9 | ||
10 | #ifndef _WX_GTK_DND_H_ | |
11 | #define _WX_GTK_DND_H_ | |
12 | ||
13 | #include "wx/icon.h" | |
14 | ||
15 | // ---------------------------------------------------------------------------- | |
16 | // macros | |
17 | // ---------------------------------------------------------------------------- | |
18 | ||
19 | // this macro may be used instead for wxDropSource ctor arguments: it will use | |
20 | // the icon 'name' from an XPM file under GTK, but will expand to something | |
21 | // else under MSW. If you don't use it, you will have to use #ifdef in the | |
22 | // application code. | |
23 | #define wxDROP_ICON(name) wxICON(name) | |
24 | ||
25 | //------------------------------------------------------------------------- | |
26 | // wxDropTarget | |
27 | //------------------------------------------------------------------------- | |
28 | ||
29 | class WXDLLIMPEXP_CORE wxDropTarget: public wxDropTargetBase | |
30 | { | |
31 | public: | |
32 | wxDropTarget(wxDataObject *dataObject = NULL ); | |
33 | ||
34 | virtual wxDragResult OnDragOver(wxCoord x, wxCoord y, wxDragResult def); | |
35 | virtual bool OnDrop(wxCoord x, wxCoord y); | |
36 | virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def); | |
37 | virtual bool GetData(); | |
38 | ||
39 | // Can only be called during OnXXX methods. | |
40 | wxDataFormat GetMatchingPair(); | |
41 | ||
42 | // implementation | |
43 | ||
44 | GdkAtom GTKGetMatchingPair(bool quiet = false); | |
45 | wxDragResult GTKFigureOutSuggestedAction(); | |
46 | ||
47 | void GtkRegisterWidget( GtkWidget *widget ); | |
48 | void GtkUnregisterWidget( GtkWidget *widget ); | |
49 | ||
50 | GdkDragContext *m_dragContext; | |
51 | GtkWidget *m_dragWidget; | |
52 | GtkSelectionData *m_dragData; | |
53 | guint m_dragTime; | |
54 | bool m_firstMotion; // gdk has no "gdk_drag_enter" event | |
55 | ||
56 | void GTKSetDragContext( GdkDragContext *dc ) { m_dragContext = dc; } | |
57 | void GTKSetDragWidget( GtkWidget *w ) { m_dragWidget = w; } | |
58 | void GTKSetDragData( GtkSelectionData *sd ) { m_dragData = sd; } | |
59 | void GTKSetDragTime( guint time ) { m_dragTime = time; } | |
60 | }; | |
61 | ||
62 | //------------------------------------------------------------------------- | |
63 | // wxDropSource | |
64 | //------------------------------------------------------------------------- | |
65 | ||
66 | class WXDLLIMPEXP_CORE wxDropSource: public wxDropSourceBase | |
67 | { | |
68 | public: | |
69 | // constructor. set data later with SetData() | |
70 | wxDropSource( wxWindow *win = NULL, | |
71 | const wxIcon © = wxNullIcon, | |
72 | const wxIcon &move = wxNullIcon, | |
73 | const wxIcon &none = wxNullIcon); | |
74 | ||
75 | // constructor for setting one data object | |
76 | wxDropSource( wxDataObject& data, | |
77 | wxWindow *win, | |
78 | const wxIcon © = wxNullIcon, | |
79 | const wxIcon &move = wxNullIcon, | |
80 | const wxIcon &none = wxNullIcon); | |
81 | ||
82 | virtual ~wxDropSource(); | |
83 | ||
84 | // start drag action | |
85 | virtual wxDragResult DoDragDrop(int flags = wxDrag_CopyOnly); | |
86 | ||
87 | void PrepareIcon( int action, GdkDragContext *context ); | |
88 | ||
89 | GtkWidget *m_widget; | |
90 | GtkWidget *m_iconWindow; | |
91 | GdkDragContext *m_dragContext; | |
92 | wxWindow *m_window; | |
93 | ||
94 | wxDragResult m_retValue; | |
95 | wxIcon m_iconCopy, | |
96 | m_iconMove, | |
97 | m_iconNone; | |
98 | ||
99 | bool m_waiting; | |
100 | ||
101 | private: | |
102 | // common part of both ctors | |
103 | void SetIcons(const wxIcon& copy, | |
104 | const wxIcon& move, | |
105 | const wxIcon& none); | |
106 | ||
107 | // GTK implementation | |
108 | void GTKConnectDragSignals(); | |
109 | void GTKDisconnectDragSignals(); | |
110 | ||
111 | }; | |
112 | ||
113 | #endif // _WX_GTK_DND_H_ | |
114 |