add support for accelerometer / orientation events

• Component: WebCore JavaScript
• Status: RESOLVED WORKSFORME

[Patrick Mueller]

Firefox has added some accelerometer / orientation JavaScript events in their nightlies.  It would be nice to have this for WebKit as well.

links:

- Doug Turner's blog posts (Moz developer):
http://dougt.org/wordpress/tag/mozorientation/

- demo movie
http://blip.tv/file/2711424

- Mozilla's IDL for the event: 
http://mxr.mozilla.org/mozilla-central/source/widget/public/nsIAccelerometer.idl

- for reference, iPhone OS doc on accelerometer APIs:
http://developer.apple.com/iphone/library/documentation/UIKit/Reference/UIAccelerometer_Class/Reference/UIAccelerometer.html

- Android doc on Sensor events, that can track acceleration and orientation as separate things
http://developer.android.com/reference/android/hardware/SensorEvent.html

Unfortunately, there's no "API" apparently for desktop macs, though accessing accelerometer data is described in "Mac OS X Internals: A Systems Approach" by Amit Singh (section 10.7.5).  Accelerometers are available for some PC laptops as well, though the usage on a laptop seems a bit of a stretch.

[Steve Block]

There's now a draft spec for both orientation and accelerometer events. It's being developed by the Geolocation working group of which Doug is an active member. See http://dev.w3.org/geo/api/spec-source-orientation.html.

We plan to implement this in Android soon.

[Steve Block]

> We plan to implement this in Android soon.
By which I mean we'll contribute both the WebCore common code and the specifics for the Android port.

Patches coming soon ...

[Steve Block]

I'll implement DeviceOrientation in stages, with separate bugs to track each stage.

I've filed Bug 39210 to tack the addition of the bindings.

[Hans Wennborg]

Adding myself to the CC list.

[Steve Block]

Added spec link to bug's URL field

[Marcos Caceres]

WebKit implements the Device Orientation and Motion spec.