https://www.w3.org/Bugs/Public/show_bug.cgi?id=16502
Summary: Define multiple monitor support and per-subdomain
Product: WebAppsWG
Version: unspecified
Platform: All
OS/Version: All
Status: NEW
Severity: normal
Priority: P2
Component: Fullscreen
AssignedTo: [email protected]
ReportedBy: [email protected]
QAContact: [email protected]
CC: [email protected], [email protected]
Currently the specification doesn't explain how browsers should attempt to
handle fullscreen across multiple monitors. This has led to implementations
simply releasing fullscreen or hiding a toggleable feature in their
configuration files to allow a webpage to preserve fullscreen.
A common use case is someone watching a video on one screen while working on
another screen. The expected scenario would be the user clicks on the other
screen removing focus. Now since the program has lost focus a security box - in
Firefox and Chrome, a yellow box - should display which asks the user if they
want to allow the page to stay in fullscreen.
I'd recommend putting a non-normative recommendations regarding this behavior.
The pointer lock handles this cleanly in their spec with the comment:
"Preferences per sub-domain can be used to allow or block pointer lock, similar
to pop-up, geolocation, and fullscreen."
- http://dvcs.w3.org/hg/pointerlock/raw-file/default/index.html
So this would be a per subdomain preference that most browsers would be
expected to implement for convenience. Currently for a normal user having to go
into the configuration to change a fullscreen preference just for watching a
video in another window is foreign to them. This change would greatly simplify
this for the common user without introducing any security problems.
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