protected virtual bool CanOpenTop(float xv, float yv) { return((null != CanOpenEdgeCallback && CanOpenEdgeCallback.CanOpenTop(this, xv, yv)) || LayerScrollY <= VerticalLayerScrollMin); }
protected virtual bool CanOpenBottom(float xv, float yv) { return((null != CanOpenEdgeCallback && CanOpenEdgeCallback.CanOpenBottom(this, xv, yv)) || LayerScrollY >= VerticalLayerScrollMax); }
protected virtual bool CanOpenRight(float xv, float yv) { return((null != CanOpenEdgeCallback && CanOpenEdgeCallback.CanOpenRight(this, xv, yv)) || LayerScrollX >= HorizontalLayerScrollMax); }