helium/ui/vertical: expand on hover

[localcc]

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Tested on (check one or more):

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Enables automatic vertical tab bar expansion on hover with cursor. Fixes #915

[localcc]

This does present a new problem where upon hover and expansion of the tab bar, the icons previously stacked vertically are now stacked horizontally, changing the tab positions under the cursor. One potential solution would be to always position the tab search/uncollapse buttons horizontally, or only position them in that way if expand on hover is enabled.

Example can be seen here:
https://github.com/user-attachments/assets/d5a2e726-10c9-409e-9e7f-c99879d730ca

[lucaspar]

My 2 cents: it'd be smoother and more resource efficient if the tabs just expanded over the page contents instead of triggering multiple page resizes in that animation.

This would likely prevent the problem mentioned above too, as it would be a different state than clicking on the expand icon.

[reyanshdagoat9113]

My 2 cents: it'd be smoother and more resource efficient if the tabs just expanded over the page contents instead of triggering multiple page resizes in that animation.

This would likely prevent the problem mentioned above too, as it would be a different state than clicking on the expand icon.

agreed. this would be much better. also try to make the hover smooth. take the example of the Zen browser - its vertical tabs are as smooth as butter!

[wukko]

Zen browser - its vertical tabs are as smooth as butter!

mostly because zen’s ui is a web page

[cyfung1031]

it seems that #1035 is better in terms of the visual effect.