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1 /* GDK - The GIMP Drawing Kit
2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2 of the License, or (at your option) any later version.
8  *
9  * This library is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with this library; if not, write to the
16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17  * Boston, MA 02111-1307, USA.
18  */
19
20 /*
21  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
22  * file for a list of people on the GTK+ Team.  See the ChangeLog
23  * files for a list of changes.  These files are distributed with
24  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
25  */
26
27 #if !defined (__GDK_H_INSIDE__) && !defined (GDK_COMPILATION)
28 #error "Only <gdk/gdk.h> can be included directly."
29 #endif
30
31 #ifndef __GDK_DND_H__
32 #define __GDK_DND_H__
33
34 #include <gdk/gdktypes.h>
35 #include <gdk/gdkdevice.h>
36
37 G_BEGIN_DECLS
38
39 typedef struct _GdkDragContext        GdkDragContext;
40
41 typedef enum
42 {
43   GDK_ACTION_DEFAULT = 1 << 0,
44   GDK_ACTION_COPY    = 1 << 1,
45   GDK_ACTION_MOVE    = 1 << 2,
46   GDK_ACTION_LINK    = 1 << 3,
47   GDK_ACTION_PRIVATE = 1 << 4,
48   GDK_ACTION_ASK     = 1 << 5
49 } GdkDragAction;
50
51 typedef enum
52 {
53   GDK_DRAG_PROTO_MOTIF,
54   GDK_DRAG_PROTO_XDND,
55   GDK_DRAG_PROTO_ROOTWIN,         /* A root window with nobody claiming
56                                    * drags */
57   GDK_DRAG_PROTO_NONE,            /* Not a valid drag window */
58   GDK_DRAG_PROTO_WIN32_DROPFILES, /* The simple WM_DROPFILES dnd */
59   GDK_DRAG_PROTO_OLE2,            /* The complex OLE2 dnd (not implemented) */
60   GDK_DRAG_PROTO_LOCAL            /* Intra-app */
61 } GdkDragProtocol;
62
63 /* Object that holds information about a drag in progress.
64  * this is used on both source and destination sides.
65  */
66
67 typedef struct _GdkDragContextClass GdkDragContextClass;
68
69 #define GDK_TYPE_DRAG_CONTEXT              (gdk_drag_context_get_type ())
70 #define GDK_DRAG_CONTEXT(object)           (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_DRAG_CONTEXT, GdkDragContext))
71 #define GDK_DRAG_CONTEXT_CLASS(klass)      (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_DRAG_CONTEXT, GdkDragContextClass))
72 #define GDK_IS_DRAG_CONTEXT(object)        (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_DRAG_CONTEXT))
73 #define GDK_IS_DRAG_CONTEXT_CLASS(klass)   (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_DRAG_CONTEXT))
74 #define GDK_DRAG_CONTEXT_GET_CLASS(obj)    (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_DRAG_CONTEXT, GdkDragContextClass))
75
76 struct _GdkDragContext {
77   GObject parent_instance;
78
79   /*< public >*/
80   
81   GdkDragProtocol GSEAL (protocol);
82
83   gboolean GSEAL (is_source);
84   
85   GdkWindow *GSEAL (source_window);
86   GdkWindow *GSEAL (dest_window);
87
88   GList *GSEAL (targets);
89   GdkDragAction GSEAL (actions);
90   GdkDragAction GSEAL (suggested_action);
91   GdkDragAction GSEAL (action);
92
93   guint32 GSEAL (start_time);
94
95   /*< private >*/
96   
97   gpointer GSEAL (windowing_data);
98 };
99
100 struct _GdkDragContextClass {
101   GObjectClass parent_class;
102
103 };
104
105 /* Drag and Drop */
106
107 GType            gdk_drag_context_get_type   (void) G_GNUC_CONST;
108 GdkDragContext * gdk_drag_context_new        (void);
109
110 void             gdk_drag_context_set_device           (GdkDragContext *context,
111                                                         GdkDevice      *device);
112 GdkDevice *      gdk_drag_context_get_device           (GdkDragContext *context);
113
114 GList           *gdk_drag_context_list_targets         (GdkDragContext *context);
115 GdkDragAction    gdk_drag_context_get_actions          (GdkDragContext *context);
116 GdkDragAction    gdk_drag_context_get_suggested_action (GdkDragContext *context);
117 GdkDragAction    gdk_drag_context_get_action           (GdkDragContext *context);
118
119 /* Destination side */
120
121 void             gdk_drag_status        (GdkDragContext   *context,
122                                          GdkDragAction     action,
123                                          guint32           time_);
124 void             gdk_drop_reply         (GdkDragContext   *context,
125                                          gboolean          ok,
126                                          guint32           time_);
127 void             gdk_drop_finish        (GdkDragContext   *context,
128                                          gboolean          success,
129                                          guint32           time_);
130 GdkAtom          gdk_drag_get_selection (GdkDragContext   *context);
131
132 /* Source side */
133
134 GdkDragContext * gdk_drag_begin      (GdkWindow      *window,
135                                       GList          *targets);
136
137 GdkNativeWindow gdk_drag_get_protocol_for_display (GdkDisplay       *display,
138                                                    GdkNativeWindow   xid,
139                                                    GdkDragProtocol  *protocol);
140
141 void    gdk_drag_find_window_for_screen   (GdkDragContext   *context,
142                                            GdkWindow        *drag_window,
143                                            GdkScreen        *screen,
144                                            gint              x_root,
145                                            gint              y_root,
146                                            GdkWindow       **dest_window,
147                                            GdkDragProtocol  *protocol);
148
149 #ifndef GDK_MULTIHEAD_SAFE
150 GdkNativeWindow gdk_drag_get_protocol (GdkNativeWindow   xid,
151                                        GdkDragProtocol  *protocol);
152
153 void    gdk_drag_find_window  (GdkDragContext   *context,
154                                GdkWindow        *drag_window,
155                                gint              x_root,
156                                gint              y_root,
157                                GdkWindow       **dest_window,
158                                GdkDragProtocol  *protocol);
159 #endif /* GDK_MULTIHEAD_SAFE */
160
161 gboolean        gdk_drag_motion      (GdkDragContext *context,
162                                       GdkWindow      *dest_window,
163                                       GdkDragProtocol protocol,
164                                       gint            x_root, 
165                                       gint            y_root,
166                                       GdkDragAction   suggested_action,
167                                       GdkDragAction   possible_actions,
168                                       guint32         time_);
169 void            gdk_drag_drop        (GdkDragContext *context,
170                                       guint32         time_);
171 void            gdk_drag_abort       (GdkDragContext *context,
172                                       guint32         time_);
173 gboolean        gdk_drag_drop_succeeded (GdkDragContext *context);
174
175 G_END_DECLS
176
177 #endif /* __GDK_DND_H__ */