Android Question How to control the ZoomableImageView control?

Short question:

I am using this zoomable image view control:
https://www.b4x.com/android/forum/t...platform-zoomable-pannable-image-view.119987/

Why this control has no size and location members?
I miss .left, .top, .width and .height. As well as the .visible command ...

How I can control this widget?
In the example project, the control covers the whole activity GUI ... Thats easy.
But how can I manipulate the location of the control and its visiblity?

Thanks and best regards
ARTsoft