Code for finding relative position and translate the draw pointer

BlurSurfaceView_03.kt

fun getBackgroundAndDrawBehind(parent: ViewGroup) {
        //Arrays to store the co-ordinates
        val rootLocation = IntArray(2)
        val viewLocation = IntArray(2)

        parent.getLocationOnScreen(rootLocation) //get the parent co-ordinates
        this.getLocationOnScreen(viewLocation) //get view co-ordinates

        //Calculate relative co-ordinates
        val left: Int = viewLocation[0] - rootLocation[0]
        val top: Int = viewLocation[1] - rootLocation[1]

        canvas?.save()
        canvas?.translate(-left.toFloat(), -top.toFloat()) //translates the initial position
        canvas?.let {
            parent.draw(it)
        }
        canvas?.restore()
    }