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Re: [mediaqueries4]Differentiating touchscreen+mouse from touchscreen only scenarios

From: Mustaq Ahmed <mustaq@chromium.org>
Date: Fri, 19 Dec 2014 13:52:17 +0000
Message-ID: <CAB0cuO7uETr4bp_uMBDxJJydJPsfu-jhRH6s=bcG_S9m7i_MzA@mail.gmail.com> (sfid-20141219_135227_420346_83CA74DA)
To: Florian Rivoal <florian@rivoal.net>
Cc: CSS WG <www-style@w3.org>, Fran├žois REMY <francois.remy.dev@outlook.com>, Oren Freiberg <oren.freiberg@microsoft.com>, Rick Byers <rbyers@chromium.org>, "Tab Atkins Jr." <jackalmage@gmail.com>, Rossen Atanassov <Rossen.Atanassov@microsoft.com>
We think the spec should avoid ambiguities around non-pointer devices---we
were bitten by this during our implementation.

Details: Even though 'pointer', 'any-pointer', 'hover' and 'any-hover'
values are meant for pointing devices only (right?), the spec
    http://dev.w3.org/csswg/mediaqueries-4/#mf-interaction
defines 'pointer' and 'hover' values ambiguously with respect to
inclusion/exclusion of non-pointing input device like keyboards:

A. The 'pointer' value definitions include non-pointing devices, but the
'hover' value definitions don't. These defs use "... primary input
mechanism ..." and "... primary pointing system ..." respectively.

B. The 'any-pointer' and 'any-hover' definitions include non-pointing
devices: "... capabilities of all the input devices ...".

Hope we didn't miss anything in-between.

Mustaq


On Thu, Dec 18, 2014 at 1:54 PM, Florian Rivoal <florian@rivoal.net> wrote:
>
>
> On 15 Dec 2014, at 21:54, Mustaq Ahmed <mustaq@google.com> wrote:
>
> Update: we are on track to ship 'any-pointer' and 'any-hover' media
> queries in Chrome M41 (
> https://www.chromestatus.com/features/6460705494532096). These are
> already available in Chrome canary builds for testing. Note that we shipped
> 'pointer' and 'hover' media queries in M38.
>
> BTW, IE 11 tech preview is also shipping these:
>
> https://status.modern.ie/mediaquerieslevel4interactionmediafeaturespointerandhover?term=media%20queries
>
>
> Good to hear, thanks for the update. Any feedback on the feature itself,
> or the way it is specified, based on this implementation?
>
> Also, I suppose you wrote some tests in the process of developing this. It
> would be greatly appreciated if you could contribute these to W3C to be
> included in the test suite for media queries 4, to help move the spec along
> the REC track.
>
>  - Florian
>
> PS: Hi Microsoft, same questions about feedback and tests for you.
>
>
>
>
>
>
Received on Thursday, 22 January 2015 13:47:15 UTC

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