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allenai / pdf-component-library

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add scroll direction threshold and add is at top #149

Closed ericmarsh995 closed 2 years ago

ericmarsh995 commented 2 years ago

Added 2 new features I needed to make a partial persistent header. scrollDirectionThreshold lets you optionally set a threshold and if you scroll that much, it will tell you in which direction. Also added isAtTop to tell you if you are scrolled to the top of the page