5

Add a double-click test area in System Settings->Input Devices->Mouse Settings->Advanced

Windows has had such a feature for 20+ years. I believe GNOME has or had one too.

Nothing fancy. Add a text one-liner ("Double-click on the image below to test your double-click interval") for an instruction and two images. The first image is the default for an image button. Double-clicking on the button within the configured time delay toggles to the other image. I like the idea of using the face-plain and face-surprise emoticons .

Thoughts?

Thanks.