internal protected virtual void OnDragOverCheck(DragOverCheckEventArgs args)
{
if (dragOverCheck != null)
{
dragOverCheck(this, args);
}
}
void HandleWidgetDragMotion(object o, Gtk.DragMotionArgs args)
{
lastDragPosition = new Point (args.X, args.Y);
DragDropAction ac;
if ((enabledEvents & WidgetEvent.DragOverCheck) == 0) {
if ((enabledEvents & WidgetEvent.DragOver) != 0)
ac = DragDropAction.Default;
else
ac = ConvertDragAction (destDragAction);
}
else {
DragOverCheckEventArgs da = new DragOverCheckEventArgs (new Point (args.X, args.Y), Util.GetDragTypes (args.Context.Targets), ConvertDragAction (args.Context.Actions));
Toolkit.Invoke (delegate {
EventSink.OnDragOverCheck (da);
});
ac = da.AllowedAction;
if ((enabledEvents & WidgetEvent.DragOver) == 0 && ac == DragDropAction.Default)
ac = DragDropAction.None;
}
if (ac == DragDropAction.None) {
args.RetVal = true;
Gdk.Drag.Status (args.Context, (Gdk.DragAction)0, args.Time);
}
else if (ac == DragDropAction.Default) {
// Undefined, we need more data
args.RetVal = true;
QueryDragData (args.Context, args.Time, true);
}
else {
// Gtk.Drag.Highlight (Widget);
args.RetVal = true;
Gdk.Drag.Status (args.Context, ConvertDragAction (ac), args.Time);
}
}
internal bool DoDragMotion(Gdk.DragContext context, int x, int y, uint time)
{
DragDropInfo.LastDragPosition = new Point (x, y);
DragDropAction ac;
if ((enabledEvents & WidgetEvent.DragOverCheck) == 0) {
if ((enabledEvents & WidgetEvent.DragOver) != 0)
ac = DragDropAction.Default;
else
ac = ConvertDragAction (DragDropInfo.DestDragAction);
}
else {
// This is a workaround to what seems to be a mac gtk bug.
// Suggested action is set to all when no control key is pressed
var cact = ConvertDragAction (context.Actions);
if (cact == DragDropAction.All)
cact = DragDropAction.Move;
var target = Gtk.Drag.DestFindTarget (EventsRootWidget, context, null);
var targetTypes = Util.GetDragTypes (new Gdk.Atom[] { target });
DragOverCheckEventArgs da = new DragOverCheckEventArgs (new Point (x, y), targetTypes, cact);
ApplicationContext.InvokeUserCode (delegate {
EventSink.OnDragOverCheck (da);
});
ac = da.AllowedAction;
if ((enabledEvents & WidgetEvent.DragOver) == 0 && ac == DragDropAction.Default)
ac = DragDropAction.None;
}
if (ac == DragDropAction.None) {
OnSetDragStatus (context, x, y, time, (Gdk.DragAction)0);
return true;
}
else if (ac == DragDropAction.Default) {
// Undefined, we need more data
QueryDragData (context, time, true);
return true;
}
else {
// Gtk.Drag.Highlight (Widget);
OnSetDragStatus (context, x, y, time, ConvertDragAction (ac));
return true;
}
}
/// <summary>
/// Raises the DragOverCheck event.
/// </summary>
/// <param name='args'>
/// Arguments.
/// </param>
protected internal virtual void OnDragOverCheck(DragOverCheckEventArgs args)
{
if (dragOverCheck != null)
dragOverCheck (this, args);
}
public void OnDragOverCheck(DragOverCheckEventArgs args)
{
Parent.OnDragOverCheck (args);
}
public void OnDragOverCheck(DragOverCheckEventArgs args)
{
Parent.OnDragOverCheck(args);
}