Fullscreen picture - touch twice gesture - zoom up to 200 %? [Fixed]

[masterjp]

If I do a double touch on my mobile, the zoom factor in fullscreen view get up to 200% or more.

Is it possible to show the picture in 100% zoom factor with a double touch?
I think many other gallery apps do it this way and it is perfect for me.
I hope for others, too.

[xnview]

If you double tap, zoom => 200%, double tap => 100%

[masterjp]

Thank you for the detailed infos. It is okay.