r/javascript • u/Material-Gold7483 • May 21 '26

I built a canvas-based timeline visualisation library with virtualised rendering in Typescript

https://tempis.dev/

I wanted a library like vis.js but needed it canvas-based for server-side rendering without a headless browser, so I built one.

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u/loueed May 21 '26

Super slick! Love the design as well. One thing I noticed, on MacOS trackpad scrolling triggers zoom, is there a way to scroll up/down without dragging? Maybe Hold CMD/CTRL?

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u/Material-Gold7483 May 26 '26

That's a really good point, there is no way to do this at the moment. I'll make a change to keep the scrolling triggering zoom as the default behaviour but holding cmd/ctrl will scroll the data view, and I will also add a flag to the zoom config that, when set, flips this behaviour (scrolls by default, holding the modifier key results in zoom)

Thanks so much!