Get the x-axis and width of the rendered UI Image and NOT the values of the rect transform.

I have an image that need enable preserved aspect ratio and I need to get the x-pos & width of the image based on how it was rendered in the screen and NOT the Rect Transform values. I hope you understand may problem. How can I get the x-pos and width of this?

Note: I don't need to use Aspect Ratio Fitter and Content Size Fitter for this situation. I just need those values.