Re: [whatwg] window.innerScreenX and window.innerScreenY

[Boris Zbarsky]

On 12/13/16 9:09 AM, Jonathan Zuckerman wrote:

Ah right.. would it be possible to compute the missing dimensions given
a mouse event with screenX/Y and clientX/Y properties?


Yes, that should be possible.

-Boris

Re: [whatwg] window.innerScreenX and window.innerScreenY

[Jonathan Zuckerman]

Ah right.. would it be possible to compute the missing dimensions given a
mouse event with screenX/Y and clientX/Y properties?

On Tue, Dec 13, 2016 at 9:03 AM Boris Zbarsky  wrote:

> On 12/13/16 8:46 AM, Jonathan Zuckerman wrote:
> > Jan, does window.screenX/screenY not meet your needs?
> > https://developer.mozilla.org/en-US/docs/Web/API/Window/screenX
> > https://developer.mozilla.org/en-US/docs/Web/API/Window/screenY
>
> That doesn't work because it gives the screen position of the top/left
> edge of the browser window, not of the content are the web page is
> rendered into.  So if you have a screen coordinate and you want to
> translate it into page-relative coordinates, this won't do what you
> want: you'll be off by the size of the window decorations and the
> browser chrome.
>
> -Boris
>

Re: [whatwg] window.innerScreenX and window.innerScreenY

[Boris Zbarsky]

On 12/13/16 8:46 AM, Jonathan Zuckerman wrote:

Jan, does window.screenX/screenY not meet your needs?
https://developer.mozilla.org/en-US/docs/Web/API/Window/screenX
https://developer.mozilla.org/en-US/docs/Web/API/Window/screenY


That doesn't work because it gives the screen position of the top/left 
edge of the browser window, not of the content are the web page is 
rendered into.  So if you have a screen coordinate and you want to 
translate it into page-relative coordinates, this won't do what you 
want: you'll be off by the size of the window decorations and the 
browser chrome.


-Boris

Re: [whatwg] window.innerScreenX and window.innerScreenY

[Jonathan Zuckerman]

Jan, does window.screenX/screenY not meet your needs?
https://developer.mozilla.org/en-US/docs/Web/API/Window/screenX
https://developer.mozilla.org/en-US/docs/Web/API/Window/screenY


On Tue, Dec 13, 2016 at 8:30 AM Jan Norden  wrote:

> There is currently no good way of translation a position in a browser to a
> position on the screen. Our particular need is translating a gaze-position
> (which we have in screen coordinates from our eyetracking hardware).
>
> It is possible in Firefox, using the proprietary
> mozInnerScreenX/mozInnerScreenY, but not in general.
>
> One of the comments in
> https://bugs.chromium.org/p/chromium/issues/detail?id=151983 seems to
> indicate that the correct course of action is to raise the issue here, so I
> will just post this and see where it leads.
>
> --
> /Jan Norden
>

[whatwg] window.innerScreenX and window.innerScreenY

[Jan Norden]

There is currently no good way of translation a position in a browser to a
position on the screen. Our particular need is translating a gaze-position
(which we have in screen coordinates from our eyetracking hardware).

It is possible in Firefox, using the proprietary
mozInnerScreenX/mozInnerScreenY, but not in general.

One of the comments in
https://bugs.chromium.org/p/chromium/issues/detail?id=151983 seems to
indicate that the correct course of action is to raise the issue here, so I
will just post this and see where it leads.

-- 
/Jan Norden