| static private GetDragTypes ( Gdk dropTypes ) : TransferDataType[] | ||
| dropTypes | Gdk | |
| Результат | TransferDataType[] | |
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);
}
}
internal bool DoDragDrop(Gdk.DragContext context, int x, int y, uint time)
{
DragDropInfo.LastDragPosition = new Point(x, y);
var cda = ConvertDragAction(context.Action);
DragDropResult res;
if ((enabledEvents & WidgetEvent.DragDropCheck) == 0)
{
if ((enabledEvents & WidgetEvent.DragDrop) != 0)
{
res = DragDropResult.None;
}
else
{
res = DragDropResult.Canceled;
}
}
else
{
DragCheckEventArgs da = new DragCheckEventArgs(new Point(x, y), Util.GetDragTypes(context.Targets), cda);
ApplicationContext.InvokeUserCode(delegate {
EventSink.OnDragDropCheck(da);
});
res = da.Result;
if ((enabledEvents & WidgetEvent.DragDrop) == 0 && res == DragDropResult.None)
{
res = DragDropResult.Canceled;
}
}
if (res == DragDropResult.Canceled)
{
Gtk.Drag.Finish(context, false, false, time);
return(true);
}
else if (res == DragDropResult.Success)
{
Gtk.Drag.Finish(context, true, cda == DragDropAction.Move, time);
return(true);
}
else
{
// Undefined, we need more data
QueryDragData(context, time, false);
return(true);
}
}
void HandleWidgetDragDrop(object o, Gtk.DragDropArgs args)
{
lastDragPosition = new Point(args.X, args.Y);
var cda = ConvertDragAction(args.Context.Action);
DragDropResult res;
if (!dropCheckEventEnabled)
{
if (dropEventEnabled)
{
res = DragDropResult.None;
}
else
{
res = DragDropResult.Canceled;
}
}
else
{
DragCheckEventArgs da = new DragCheckEventArgs(new Point(args.X, args.Y), Util.GetDragTypes(args.Context.Targets), cda);
EventSink.OnDragDropCheck(da);
res = da.Result;
if (!dropEventEnabled && res == DragDropResult.None)
{
res = DragDropResult.Canceled;
}
}
if (res == DragDropResult.Canceled)
{
args.RetVal = true;
Gtk.Drag.Finish(args.Context, false, false, args.Time);
}
else if (res == DragDropResult.Success)
{
args.RetVal = true;
Gtk.Drag.Finish(args.Context, true, cda == DragDropAction.Move, args.Time);
}
else
{
// Undefined, we need more data
args.RetVal = true;
QueryDragData(args.Context, args.Time, false);
}
}
void HandleWidgetDragMotion(object o, Gtk.DragMotionArgs args)
{
lastDragPosition = new Point(args.X, args.Y);
DragDropAction ac;
if (!dragMotionCheckEventEnabled)
{
if (dragMotionEventEnabled)
{
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));
EventSink.OnDragOverCheck(da);
ac = da.AllowedAction;
if (!dragMotionEventEnabled && ac == DragDropAction.Default)
{
ac = DragDropAction.None;
}
}
if (ac == DragDropAction.None)
{
args.RetVal = false;
}
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);
}
}