Fix some bad offset maths

[andydotxyz]

Fixes #2387

Checklist:

• Tests included.
• Lint and formatter run with no errors.
• Tests all pass.

[stuartdd]

Andy
I have spent 40 years in software development and even some years in corporate dev with git in BT but I do not know how to pull the fix, or where to put it so that the dev environment on my linux box builds with it. It is my git + go knowledge that is lacking.

Is it possible to update the go.mod file and let go do the work or are there specific pull requests from git.

I am happy to review the code but obviously as I raised the issue it should be me to sign off on it. I am just not sure of the process.

Is there a doc or site that explains the process. I would love to get up to speed with the process and contribute.

Regards

Stuart

[andydotxyz]

Not a problem, the easiest way is to use the Go module replace directive - add this to the end of your go.mod:

replace fyne.io/fyne/v2 => github.com/andydotxyz/fyne/v2 07e8477c8

Then run go mod tidy and you'll be running on top of my PR.

[stuartdd]

Thanks Andy I can confirm that the changes work.
I have updated my go.mod files to use 07e8477 (as described)
I can see the changes and the issue is now resolved.