1 /* GDK - The GIMP Drawing Kit
2  * Copyright (C) 2010, Red Hat, Inc
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, see <http://www.gnu.org/licenses/>.
16  */
17 
18 #ifndef __GDK_DND_PRIVATE_H__
19 #define __GDK_DND_PRIVATE_H__
20 
21 #include "gdkdnd.h"
22 
23 G_BEGIN_DECLS
24 
25 
26 #define GDK_DRAG_CONTEXT_CLASS(klass)      (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_DRAG_CONTEXT, GdkDragContextClass))
27 #define GDK_IS_DRAG_CONTEXT_CLASS(klass)   (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_DRAG_CONTEXT))
28 #define GDK_DRAG_CONTEXT_GET_CLASS(obj)    (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_DRAG_CONTEXT, GdkDragContextClass))
29 
30 typedef struct _GdkDragContextClass GdkDragContextClass;
31 
32 
33 struct _GdkDragContextClass {
34   GObjectClass parent_class;
35 
36   GdkWindow * (*find_window)   (GdkDragContext  *context,
37                                 GdkWindow       *drag_window,
38                                 GdkScreen       *screen,
39                                 gint             x_root,
40                                 gint             y_root,
41                                 GdkDragProtocol *protocol);
42   GdkAtom     (*get_selection) (GdkDragContext  *context);
43   gboolean    (*drag_motion)   (GdkDragContext  *context,
44                                 GdkWindow       *dest_window,
45                                 GdkDragProtocol  protocol,
46                                 gint             root_x,
47                                 gint             root_y,
48                                 GdkDragAction    suggested_action,
49                                 GdkDragAction    possible_actions,
50                                 guint32          time_);
51   void        (*drag_status)   (GdkDragContext  *context,
52                                 GdkDragAction    action,
53                                 guint32          time_);
54   void        (*drag_abort)    (GdkDragContext  *context,
55                                 guint32          time_);
56   void        (*drag_drop)     (GdkDragContext  *context,
57                                 guint32          time_);
58   void        (*drop_reply)    (GdkDragContext  *context,
59                                 gboolean         accept,
60                                 guint32          time_);
61   void        (*drop_finish)   (GdkDragContext  *context,
62                                 gboolean         success,
63                                 guint32          time_);
64   gboolean    (*drop_status)   (GdkDragContext  *context);
65   GdkWindow*  (*get_drag_window) (GdkDragContext *context);
66   void        (*set_hotspot)   (GdkDragContext  *context,
67                                 gint             hot_x,
68                                 gint             hot_y);
69   void        (*drop_done)     (GdkDragContext   *context,
70                                 gboolean          success);
71 
72   gboolean    (*manage_dnd)     (GdkDragContext  *context,
73                                  GdkWindow       *ipc_window,
74                                  GdkDragAction    actions);
75   void        (*set_cursor)     (GdkDragContext  *context,
76                                  GdkCursor       *cursor);
77   void        (*cancel)         (GdkDragContext      *context,
78                                  GdkDragCancelReason  reason);
79   void        (*drop_performed) (GdkDragContext  *context,
80                                  guint32          time);
81   void        (*dnd_finished)   (GdkDragContext  *context);
82 
83   gboolean    (*handle_event)   (GdkDragContext  *context,
84                                  const GdkEvent  *event);
85   void        (*action_changed) (GdkDragContext  *context,
86                                  GdkDragAction    action);
87 
88   void        (*commit_drag_status) (GdkDragContext  *context);
89 };
90 
91 struct _GdkDragContext {
92   GObject parent_instance;
93 
94   /*< private >*/
95   GdkDragProtocol protocol;
96 
97   GdkDisplay *display;
98 
99   gboolean is_source;
100   GdkWindow *source_window;
101   GdkWindow *dest_window;
102   GdkWindow *drag_window;
103 
104   GList *targets;
105   GdkDragAction actions;
106   GdkDragAction suggested_action;
107   GdkDragAction action;
108 
109   guint32 start_time;
110 
111   GdkDevice *device;
112 
113   guint drop_done : 1; /* Whether gdk_drag_drop_done() was performed */
114 };
115 
116 GList *  gdk_drag_context_list (void);
117 
118 void     gdk_drag_context_set_cursor          (GdkDragContext *context,
119                                                GdkCursor      *cursor);
120 void     gdk_drag_context_cancel              (GdkDragContext      *context,
121                                                GdkDragCancelReason  reason);
122 gboolean gdk_drag_context_handle_source_event (GdkEvent *event);
123 gboolean gdk_drag_context_handle_dest_event   (GdkEvent *event);
124 GdkCursor * gdk_drag_get_cursor               (GdkDragContext *context,
125                                                GdkDragAction   action);
126 
127 G_END_DECLS
128 
129 #endif
130