462881 - nsDOMWindowUtils::SendMouseEvent sends it to the wrong place, breaking tests

Status: NEW

(Core :: DOM: Core & HTML, defect, P5)

Description

[Boris Zbarsky [:bzbarsky]]

The problem is this part:

245   event.refPoint.x = aX;
246   event.refPoint.y = aY;

aX and aY had better be in CSS pixels (because we use things like getBoundClientRect().left for them).

event.refPoint is in device pixels.

On high-DPI screens, mochitests are basically guaranteed to fail.

Comment 1

[Johnny Stenback (:jst)]

Not going to block the release on this.

Comment 2

[Boris Zbarsky [:bzbarsky]]

Patch in bug 462979 ended up including a fix for this.

Comment 3

[Firefox Bug Husbandry Bot]

https://bugzilla.mozilla.org/show_bug.cgi?id=1472046

Move all DOM bugs that haven't been updated in more than 3 years and has no one currently assigned to P5.

If you have questions, please contact :mdaly.