Fit the entire large image inside the fixed crop window

[midhun-murali]

I have an image which has height greater than its width. I want to achieve something like user can pinch zoom out to fit the whole image inside a fixed cropping window. If there is any empty space after zooming out then it should be filled with a default color like black or white.
Something like

Is this possible with this library.
And thank you for providing this wonderful library.