Time delay option for changing categories on hover in the Cinnamon Menu

[justin-sharber]

In the Cinnamon Menu, categories can change on hover / mouse-over. However, it requires a precise horizontal movement to get to apps in that menu - drift diagonally while moving to choose an app, and category changes to something not-intended.

This could be fixed with a short time delay option. This would mirror the open on mouse-over for the menu itself, which has a time delay option. Default ~ 100 ms. A short time delay keeps the hover convenience for choosing categories but minimizes accidental changes.

[mtwebster]

There's actually a mechanism to avoid this already, at least in the default menu applet...

https://github.com/linuxmint/cinnamon/blob/master/files/usr/share/cinnamon/applets/menu%40cinnamon.org/applet.js#L2049-L2079

Draw an imaginary triangle with the left corner where your pointer is while navigating the category list, and connecting to the top-left and bottom-left of the application list.

You can move your mouse from a category to any visible application (even while passing over other categories) without upsetting your current category.

It's not perfect - if you stop short, or jitter a bit, you can violate that field's boundary, but I think a delay would mostly get in the way rather than help. I would consider trying to improve the vector calculations first.