1332128 - screen.orientation not always updated

Status: RESOLVED DUPLICATE of bug 1750147

(Core :: DOM: Device Interfaces, defect, P3)

Description

[Ying]

User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36

Steps to reproduce:

http://output.jsbin.com/yogojih
This link pulls and displays screen orientation angle at 500ms interval, and the test was performed on Nexus 6P running Android 7.1.1

I checked whether the orientation was updated correctly with respect to different rotations. 


Actual results:

https://goo.gl/photos/37T9TWB1CTkhf7Nk7
A video is worth a thousand word.
Primary portrait <-> Primary landscape   works
Primary portrait <-> Secondary landscape   works
Primary landscape <-> Secondary landscape   No event fired, and orientation is not updated. 


Expected results:

Rotating the phone from primary landscape to secondary landscape should trigger screen.orientation update.

Comment 2

[Oskar Larsson Högfeldt]

Perhaps related to this, on my system, Firefox reports screen.orientation.type === "portrait-primary" even when I move all of Firefox's windows to my landscape monitor

MacBook Pro Retina, 15-inch, Mid 2015,
MacOS 10.15.1,
Firefox Developer Edition 71.0b11
Built-in monitor turned off
Monitor 1: Dell U2518D with rotation set to 90 degrees (portrait mode) in MacOS system settings
Monitor 2: Dell U2518D with rotation set to Standard (landscape mode) in MacOS system settings
Mission control settings: default, except that "Displays have separate Spaces" turned off

Comment 3

[Makoto Kato [:m_kato]]

Move to GeckoView bug since this isn't hal issue. (bug detail is bug 1750147)

Perhaps related to this, on my system, Firefox reports screen.orientation.type === "portrait-primary" even when I move all of Firefox's windows to my landscape monitor

We don't implement orientation event / type well on desktop Firefox. And your issue isn't same as original issue.