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Re: Mouse Lock

From: Gregg Tavares (wrk) <gman@google.com>
Date: Mon, 20 Jun 2011 17:14:47 -0700
Message-ID: <BANLkTik4sgkM_03BaWE+=hNaWgBpNn05tQ@mail.gmail.com>
To: Adam Barth <w3c@adambarth.com>
Cc: "Tab Atkins Jr." <jackalmage@gmail.com>, Olli@pettay.fi, Jonas Sicking <jonas@sicking.cc>, Vincent Scheib <scheib@google.com>, Brandon Andrews <warcraftthreeft@sbcglobal.net>, Glenn Maynard <glenn@zewt.org>, Charles Pritchard <chuck@jumis.com>, Kenneth Russell <kbr@google.com>, robert@ocallahan.org, public-webapps@w3.org
On Mon, Jun 20, 2011 at 4:53 PM, Adam Barth <w3c@adambarth.com> wrote:

> On Mon, Jun 20, 2011 at 3:30 PM, Tab Atkins Jr. <jackalmage@gmail.com>
> wrote:
> > On Mon, Jun 20, 2011 at 3:26 PM, Olli Pettay <Olli.Pettay@helsinki.fi>
> wrote:
> >> On 06/21/2011 01:08 AM, Tab Atkins Jr. wrote:
> >>> On Mon, Jun 20, 2011 at 3:03 PM, Olli Pettay<Olli.Pettay@helsinki.fi>
> >>>  wrote:
> >>>> On 06/21/2011 12:25 AM, Tab Atkins Jr. wrote:
> >>>>> The use-case is non-fullscreen games and similar, where you'd prefer
> >>>>> to lock the mouse as soon as the user clicks into the game.
>  Minecraft
> >>>>> is the first example that pops into my head that works like this -
> >>>>> it's windowed, and mouselocks you as soon as you click at it.
> >>>>
> >>>> And how would user unlock when some evil sites locks the mouse?
> >>>> Could you give some concrete example about
> >>>> " It's probably also useful to instruct the user how to release the
> >>>> lock."
> >>>
> >>> I'm assuming that the browser reserves some logical key (like Esc) for
> >>> releasing things like this, and communicates this in the overlay
> >>> message.
> >>
> >> And what if the web page moves focus to some browser window, so that ESC
> >> is fired there? Or what if the web page moves the window to be outside
> the
> >> screen so that user can't actually see the message how to
> >> unlock mouse?
> >
> > How is a webpage able to do either of those things?
>
> window.focus()
>

Seems like calling window.focus() would cancel mouselock. As I suspect would
changing the focus any other way like Alt-Tab, Cmd-Tab, etc.



>
> Adam
>
Received on Tuesday, 21 June 2011 00:15:14 GMT

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