RFR: JDK-8263389 IGV: Zooming changes the point that is currently centered

[jtfuller111]

On Thu, 10 Jun 2021 20:49:06 GMT, jtfuller111 <github.com+85193727+jtfuller111 at openjdk.org> wrote:

>> Fixing the zoom issue on IGV. I tested this on Windows and Linux and zooming now works as expected.
>
> Hello, could anyone kindly take a look at this?

> Hi @jtfuller111,
> 
> I've tested the fix and found that it eliminates the random moves of the view port when zooming. Thumbs up for that. It still changes the point that is centered though. You might want to fix that also if possible.
> 
> Thanks, Richard.

Hello! I pushed a change to also keeps the current center point centered when zooming.

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PR: https://git.openjdk.java.net/jdk/pull/4291