breadcrumbs:

- /teams
- Teams page_name: input-dev title: Input Team

The Chromium Input team (aka input-dev) is a web platform team focused on making touch (P1) and other forms of input (P2) awesome on the web. High-level goals:

Measure & improve input-to-paint latency. Web pages should stick to your finger!
Reduce web-developer pain points around input and scrolling, including improving interoperability between browser engines, predictability, simplicity and consistency between chromium platforms.
Enable high-performance rich touch interactions (such as pull-to-refresh) on the web.
Ensure Chrome UI features driven by input over the contents area provide a great experience to both end-users and web developers.
Enable the productivity of any chromium developer working with input-related code through effective code ownership and code health initiatives.

See also our concrete quarterly objectives.

Contacts

input-dev@chromium.org is our mailing list, and we also use the #input-dev channel on Chromium Slack.

Useful bug queries

Blink>input, Blink>scroll - all (or most) bugs we're tracking
We triage the bugs almost daily with this process.
Available bugs
Code cleanup ideas

Related specifications & Working Groups

If you want to get involved with any of the specifications or just get all the updates make sure to join their public mailing lists as well.

Presentations & Talks

Overscroll Customization lightning talk
Scroll into text lightning talk
Event Delegation to Workers
Fling On Browser
Scroll & Input Prediction
WPT Automation
Browserside User Activation
Root Scroller
Extensible Scrolling - BlinkOn 3 (Nov 2014): slides, video
Smooth to the touch: chromium's challenges in input on mobile - BlinkOn 2 (May 2014)
Input - BlinkOn 1 (Sept 2013)
Point, click, tap, touch - Building multi-device web interfaces - Google I/O 2013

Design Docs

Scroll Unification
Chromium input latency tracking
Scroll-blocks-on: scrolling performance vs. richness tradeoff
Chromium throttled async touchmove scrolling
Gesture Recognition
Vsync-aligned buffered input
Touchpad and Wheel Latching
Touchpad pinch zoom
User Activation v2
- How Chrome uses user gestures (May 2017)
- Case study: Popup with user-activation across browsers (May 2017)
- User Activation v2: Main design (May 2017)
- User Activation v2 with site isolation (May 2018)
Input for Worker:
- Initial design discussion: Low-latency Event Handling in Worker (July 2017)
- JS API proposals for Routing Worker Events through the Compositor Thread (July 2017)
Plumbing mouse as mouse on Android (October 2016)
Coalesced Events (October 2016)

Learning Resources