private void StopDrag(IPropHolder widget, DragCtx ctx)
{
if (!ctx.IsDragging)
{
return;
}
ctx.IsDragging = false;
widget.Props.RemoveSingleProp(_onUpdateDrag !);
}
private void StartDrag(IPropHolder widget, bool isXFixed, bool isYFixed, DragCtx dragCtx)
{
if (isXFixed && isYFixed)
{
return;
}
var devLoc = _device.GetPointedLocation();
if (dragCtx.IsDragging)
{
return;
}
dragCtx.IsDragging = true;
dragCtx.Set(devLoc);
widget.WithProp(_onUpdateDrag !);
}
private static Maybe <T> ExtractProp <T>(IPropHolder widgetNode) where T : IProp
{
return(widgetNode.Props.SafeGetByProp <T>().Bind(l => l.Any() ? Maybe.Some((T)l.First()) : Maybe.None));
}
