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Re: Making pt a non-physical unit

From: David Singer <singer@apple.com>
Date: Thu, 14 Jan 2010 13:59:41 -0800
Cc: "robert@ocallahan.org" <robert@ocallahan.org>, www-style <www-style@w3.org>
Message-Id: <B1188649-E794-4F4E-9E3E-BB1F99D816F5@apple.com>
To: Brad Kemper <brad.kemper@gmail.com>

On Jan 14, 2010, at 12:12 , Brad Kemper wrote:

> On Jan 14, 2010, at 11:58 AM, David Singer <singer@apple.com> wrote:
>>> I don't like that part. If I know that a scoreboard at the ball park is 800 pixels wide, with pixels the size of lightbulbs or whatever, I should be able to use that information to create borders that are one or two or three device pixels in width. It shares the same characteristics as other screen media.
>> There is a huge assumption here of a tie between the designer and the output device, which is very rare.
> For things like scoreboards or billboards, I disagree. Someone who wishes to advertise on a billboard needs to tailed their content for that output. Baseball scoreboards show content that was designed to be shown there. I've never seen anything that size that was there to just display any content at all from the Web.

OK, but if you know the output device you're working towards, then you also know that it's defined, for example, 1 CSS pixel as being 6 true inches.  For the 'closet' case where it's a closed system, people can work it out.  Clear specs are needed for arbitrary interoperability.

David Singer
Multimedia and Software Standards, Apple Inc.
Received on Thursday, 14 January 2010 22:00:14 UTC

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