W3C home > Mailing lists > Public > public-ddr-vocab@w3.org > June 2007

RE: Height vs Width when a screen can rotate

From: Rotan Hanrahan <rotan.hanrahan@mobileaware.com>
Date: Fri, 22 Jun 2007 11:12:22 +0100
Message-ID: <D5306DC72D165F488F56A9E43F2045D3011C714E@FTO.mobileaware.com>
To: <public-ddr-vocab@w3.org>

When one excludes the browser and platform chrome, you have what we
sometimes call the "usable width/height". For some devices this is
known, for others it is not fixed (due to styling or customisation), and
sometimes not easy to predict/discover.

By addressable I meant that that it is possible to change the
colour/brightness of the pixel directly via software. A screen might
have a bevel/surround that appear as pixels, but they are fixed (or
controlled purely by hardware) and not addressable by software. I would
not count these as part of the screen height/width.

I'd be quite happy to see someone contribute "usable height" and "usable
width" as properties, and we can argue which of these should be core.
(Perhaps both?)

I chose to start with the software-independent addressable pixels first,
because these are usually the easiest to measure. When you get into
chrome effect, things get murky.

---Rotan.

-----Original Message-----
From: public-ddr-vocab-request@w3.org
[mailto:public-ddr-vocab-request@w3.org] On Behalf Of Jo Rabin
Sent: 22 June 2007 11:05
To: public-ddr-vocab@w3.org
Subject: RE: Height vs Width when a screen can rotate


"Description: The total number of addressable pixels in the vertical
direction of a rectangular display when held in its default orientation.
The property does not apply to screen shapes that are not rectangular or
square. This property is in the class of display properties."

At risk of leading down the route of wondering how many angels can dance
on the head of a pin, when we say "addressable pixels", do we man the
number of pixels that are available within a defined browser context, or
do we mean the number of pixels exposed by the operating system to the
browser ... the point being that the browser may have chrome, of course.

Also to note that the Vodafone gateway in the UK reduces the pixels
exposed by the browser by inserting a heading all of its own.

So the question is, does this property refer to the number of pixels
available in this delivery context when all the components that go to
make up the delivery context have done their bit, or does it mean
something else?

If only life were simple.

Jo
Received on Friday, 22 June 2007 10:12:34 GMT

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