emit signal in case of x/y data change
emit signal in case of x/y data change

MITK/MITK,fmilano/mitk,fmilano/mitk,fmilano/mitk,fmilano/mitk,MITK/MITK,MITK/MITK,fmilano/mitk,MITK/MITK,MITK/MITK,fmilano/mitk,fmilano/mitk,MITK/MITK