The wheel was the obvious gesture and it cannot be made to behave. To zoom without also scrolling the
panel it has to call preventDefault, which means the page stops scrolling whenever the pointer happens
to be over a picture — and a panel of slots is mostly picture. Not calling it means both happen at
once. There is no third option.
So `+` and `−` on hover, top right, grouped and left of Change and Remove: they are the pair somebody
presses repeatedly, and a destructive Remove sitting between them would be pressed by accident
eventually.
Anchored to the centre of the current window rather than to a pointer, because a button has no pointer
position — and that is what somebody expects from a `+` anyway: the middle of what I am looking at
stays where it is.
The level is shown between them. A press that changes nothing at 1.0x or 8x is then explained rather
than read as a dead button.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
pastilhasandClaude Opus 5
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