[BUG] Screen Capture Mangled

[ricknun]

Describe the bug
Doing a screen capture results in an image file that looks nothing like the NanoVNA display.

To Reproduce
See the attached images. Get any reasonable display on the NanoVNA and select "Capture Device" in the app.

Expected behavior
An image that agrees with the 4.3-inch diagonal measure NanoVNA display.

Screenshots
See an image of what is on the NanoVNA display and the saved screen capture file.

Environment (please complete the following information):
I am using a Samsung Galaxy S8 phone with Android v9, One UI v1.0, and NanoVNA WebUSB Client v1.4. A USB cable and OTG cable connect to a DEEPELEC NanoVNA-F hardware v2.3 and firmware v0.2.1 by BH5HNU.

Additional context
This problem happens every trial with the hardware and software listed.

[DavidJRichards]

I have a 4.3 inch NanoVNA V2 800x400 display and get the same kind of screen capture problem.
I imagine the capture is hard coded for some other screen resolution.
Screen capture viewed using latest nanovna-saver is correct.
hth David.

[RichardHum]

PR #22 should fix this issue.