Better support for custom toolbar items

Maybe tasty_backend_gin does something similar? https://www.drupal.org/project/tasty_backend_gin

@webflo can you please test the latest dev? as I think this is the same issue as #3175265: Include custom toolbar items in secondary toolbar
Thanks

I don't think my patch completely covered this issue. There's still the problem that custom toolbar / administration menu items have no icon by default. It would be easier if the only necessary CSS to provide a custom icon would be the mask image.

I replaced some selectors targeting specific icons with more general ones and everything still seems to be working. All you have to do now to add an icon for a new menu link is add a mask image, eg.

.toolbar-icon-version:before {
    -webkit-mask-image: url(data);
}

There's still the problem that menu links without an icon look bad, but we should probably create a new issue for that.

Could you share what icon pack you're getting the icons from? Can be useful for people searching for similar looking icons for their custom menu items.

Most of them are custom icons made by myself. But I can recommend this OpenSource library, will blend in nicely: https://feathericons.com/

Great, thanks for the tip!

Was fixed along with #3175440: Menu items without links are not themed correctly.