Add vtables for DND

This commit hides GdkDragContext and GdkDragContextClass, adds
vfuncs for most drag context functionality, and turns the X11 DND
implementation into GdkDragContextX11. We also add vfuncs to
GdkDisplay for gdk_drag_get_protocol and to GdkWindow for
gdk_drag_begin, and implemenet them for X11.
Other backends need similar treatment and are broken now.

1 files changed, 57 insertions, 0 deletions

diff --git a/gdk/gdkinternals.h b/gdk/gdkinternals.h
index 604ed64aa9..b50ee9e24d 100644
--- a/gdk/gdkinternals.h
+++ b/gdk/gdkinternals.h
@@ -305,6 +305,10 @@ struct _GdkDisplayClass
 							   GdkFilterFunc func,
 							   gpointer      data);
   GdkAppLaunchContext *      (*get_app_launch_context) (GdkDisplay *display);
+  GdkNativeWindow            (*get_drag_protocol)      (GdkDisplay      *display,
+                                                        GdkNativeWindow  winid,
+                                                        GdkDragProtocol *protocol,
+                                                        guint           *version);
 
 
   /* Signals */
@@ -409,6 +413,59 @@ struct _GdkScreenClass
   void (*monitors_changed) (GdkScreen *screen);
 };
 
+struct _GdkDragContextClass {
+  GObjectClass parent_class;
+
+  GdkWindow * (*find_window)   (GdkDragContext  *context,
+                                GdkWindow       *drag_window,
+                                GdkScreen       *screen,
+                                gint             x_root,
+                                gint             y_root,
+                                GdkDragProtocol *protocol);
+  GdkAtom     (*get_selection) (GdkDragContext  *context);
+  gboolean    (*drag_motion)   (GdkDragContext  *context,
+                                GdkWindow       *dest_window,
+                                GdkDragProtocol  protocol,
+                                gint             root_x,
+                                gint             root_y,
+                                GdkDragAction    suggested_action,
+                                GdkDragAction    possible_actions,
+                                guint32          time_);
+  void        (*drag_status)   (GdkDragContext  *context,
+                                GdkDragAction    action,
+                                guint32          time_);
+  void        (*drag_abort)    (GdkDragContext  *context,
+                                guint32          time_);
+  void        (*drag_drop)     (GdkDragContext  *context,
+                                guint32          time_);
+  void        (*drop_reply)    (GdkDragContext  *context,
+                                gboolean         accept,
+                                guint32          time_);
+  void        (*drop_finish)   (GdkDragContext  *context,
+                                gboolean         success,
+                                guint32          time_);
+  gboolean    (*drop_status)   (GdkDragContext  *context);
+};
+
+struct _GdkDragContext {
+  GObject parent_instance;
+
+  GdkDragProtocol protocol;
+
+  gboolean is_source;
+  GdkWindow *source_window;
+  GdkWindow *dest_window;
+
+  GList *targets;
+  GdkDragAction actions;
+  GdkDragAction suggested_action;
+  GdkDragAction action;
+
+  guint32 start_time;
+
+  GdkDevice *device;
+};
+
 extern GSList    *_gdk_displays;
 extern gchar     *_gdk_display_name;
 extern gint       _gdk_screen_number;