1823822 - Pointer Events: stylus with finger wheel always reports tangentialPressure of 0 on Windows

Status: UNCONFIRMED

(Core :: DOM: UI Events & Focus Handling, defect)

Description

[Patrick H. Lauke]

Steps to reproduce:

1. Use a Wacom digitizer tablet with an airbrush pen (which includes a "finger wheel")
2. Open https://patrickhlauke.github.io/touch/pen-tracker/
3. Move the pen over the digitizer, change the position/value of the finger wheel

Actual results:

tangentialPressure https://w3c.github.io/pointerevents/#dom-pointerevent-tangentialpressure always returns "0" (either "neutral position" or default value for hardware that doesn't support tangential pressure).

running the Wacom diagnostic tool, you can however see that the finger wheel value does change / is communicated correctly (and it works in other applications, such as drawing apps).

Expected results:

tangentialPressure should return a value between [-1, 1] that reflects the value of the finger wheel (noting that the Wacom airbrush appears to be one of those cases where the value is always positive, so [0, 1], as noted in the PE specification.

Note that this works correctly on Firefox/macOS. it's only on Windows that this seems to be a problem. (not tried Linux)

See also https://github.com/w3c/pointerevents/issues/467

Also note that this same issue affects Chrome/Windows as well (but again, not Chrome/macOS) - see https://bugs.chromium.org/p/chromium/issues/detail?id=1426685

Comment 1

[Patrick H. Lauke]

Attachment: Screenshot of firefox and the pen tracker, next to the Wacom diagnostic tool. the latter shows a value for "Wheel", but the former shows that tangentialPressure is reported as 0

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::DOM: Core & HTML' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 3

[Olli Pettay [:smaug][[e-mail]]]

Chromium bug https://bugs.chromium.org/p/chromium/issues/detail?id=1426685