Change Android "floating window" size/aspect

[the-Arioch]

Checklist

• [X] I made sure that there are no existing issues - open or closed - to which I could contribute my information.
• [X] I made sure that there are no existing discussions - open or closed - to which I could contribute my information.
• [X] I have read the FAQs inside the app (Menu -> About -> FAQs) and my problem isn't listed.
• [X] I have taken the time to fill in all the required details. I understand that the bug report will be dismissed otherwise.
• [X] This issue contains only one feature request.
• [X] I have read and understood the contribution guidelines.
• [ ] I optionally donated to support the Fossify mission.

Feature description

Would've been nice if the "floating window" had the X:Y ratio set according to the actual picture viewed, or that user could resize the window at least

Why do you want this feature?

The actual picture in the screenshot above is the narrow black band, the Gallery's "white mist" above and below are just wasting screen space.

Additional information

No response