As Claude pointed out, Scrolling is not part of ECMAScript. On the subject of improved support for virtual scrolling, I've started discussions on CSS-WG and Web Components issue trackers.
https://github.com/w3c/csswg-drafts/issues/3397 https://github.com/w3c/webcomponents/issues/791 Please feel free to add your +1 there or contribute your own use cases to the discussion. On Sat, 22 Jun 2019 at 19:41, kai zhu <kaizhu...@gmail.com> wrote: > the referenced video was entertaining to watch (and i learned new things > about typescript and proxies), but i still don't understand your UX-problem > -- at least enough to know what/how a new standard-api would help. > > there's a bunch of canvas-scrolling examples @ > https://konvajs.org/docs/sandbox/Canvas_Scrolling.html. examples #1 and > #4 implement native canvas-scrolling, with the latter having less jankiness > on my mobile-chrome. maybe you're asking for consistent #4 css-behavior > across all mobile-browsers (i have no idea if it works as well in > ios-safari)? that would be w3c csswg's domain. > > also somewhat-related -- chrome is debating an intent-to-implement feature > for scrollTo-behavior for text-fragments. > for example: > `https://www.example.com#targetText=You%20may%20use%20this%20domain` > <https://www.example.com#targetText=You%20may%20use%20this%20domain> > will scroll to element in www.example.com containing text "You may use > this domain". [1] > > [1] Scroll-To-Text using a URL fragment > https://github.com/bokand/ScrollToTextFragment > > > On Fri, Jun 21, 2019 at 10:33 AM Adam Eisenreich <a...@seznam.cz> wrote: > >> If you want to have native scrolling experience for `<canvas>` you need >> to either implement your own scrolling behaviour, or you will create >> `<canvas>` of size much bigger than screen, that way it overflows screen >> and shows scollbars, but then you must only render on part of canvas as >> most is hidden. >> >> I would like an API I would ask: >> If this element **would be scrollable**, when scrolling would actually >> occur? How long would the animation take on this platform? Where the end >> offset would be? >> Scrolling isn't same for each platform ex.: PC, Mac, iOS, Android. >> >> There is video about proxx, it mentions other problems too, but they >> explain there how they did implement natural scrolling for `<canvas>`: >> https://youtu.be/ViyTYEv9dM8?t=1005 >> _______________________________________________ >> es-discuss mailing list >> es-discuss@mozilla.org >> https://mail.mozilla.org/listinfo/es-discuss >> > _______________________________________________ > es-discuss mailing list > es-discuss@mozilla.org > https://mail.mozilla.org/listinfo/es-discuss >
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