Fractional coordinates in MouseEvents

Update the types of all coordinates in MouseEvents from long to double to make the coordinates more precise for PointerEvents on high-DPI devices. Note, however, that the only browser-fired events that will change are PointerEvents. MouseEvents will continue to have integral coordinates for backward compatibility.

Demo

• https://output.jsbin.com/quqoqe/4/quiet

Specification

Working draft or equivalent

Status in Chromium

Blink components: Blink>Input

Enabled by default (launch bug) in:

• Chrome for desktop release 56
• Chrome for Android release 56
• Android WebView release 56
• Opera release 43
• Opera for Android release 43

Consensus & Standardization

• Firefox: Public support
• Edge: In development
• Safari: No public signals
• Web Developers: No signals

Owner

• mustaq@chromium.org

Last updated on 2017-06-14