Fennec/Features/multitouch

Status

Team

Open issues/risks

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Stage 1: Definition

1. Feature overview

Touch Events part 1 exposed single-touch events to web content.

Touch Events part 2 will extend that to expose multi-touch events to Fennec chrome and web content. This will allow authors to build web pages that interact with multiple touch points at once. It will also be useful in Fennec chrome for implementing multi-touch gestures in JavaScript.

2. Users & use cases

• Expose multi-touch events (multiple simultaneous touch events) to content in Fennec.
• Compatibility with existing web content.
• Conformance with the W3C Touch Events editor's draft, including new attributes like radius/force/angle where available.
• Compatibility with a common subset of Safari/Opera functionality.
• Use touch events to implement gestures in Fennec chrome JavaScript.

3. Dependencies

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4. Requirements

• No visible performance regressions.
• UI gestures (e.g. pinch zoom) still work unless pages deliberately prevent them.

Non-goals

• 100% compatibility with Safari or other browsers.
• Enable W3C touch events in desktop Firefox (will be done in future versions).
• Defining new gestures - will be done separately in Fennec/Features/gestures.
• Exposing gesture events to web content.

Stage 2: Design

5. Functional specification

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6. User experience design

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Stage 3: Planning

7. Implementation plan

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8. Reviews

Security review

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Privacy review

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Localization review

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Accessibility

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Quality Assurance review

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Operations review

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Stage 4: Development

9. Implementation

• bug 603008 - Support multi-touch on Android
• bug 544614 - Tracking bug for touch events in Fennec

Stage 5: Release

10. Landing criteria

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Feature details

Team status notes

• W3C Touch Events editor's draft specification