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Re: CSS Viewport proposal

From: Rune Lillesveen <rune@opera.com>
Date: Wed, 11 Aug 2010 10:17:17 +0200
To: "Kenneth Rohde Christiansen" <kenneth.christiansen@gmail.com>
Cc: "www-style list" <www-style@w3.org>
Message-ID: <op.vg9la3n98isf1p@id-c1005.oslo.osa>
On Tue, 10 Aug 2010 20:01:13 +0200, Kenneth Rohde Christiansen  
<kenneth.christiansen@gmail.com> wrote:

> Regarding:
> ‘device-width’ The width of the screen in CSS pixels at scale factor 1.0.
> For the iPhone, Android etc, this is the width of the screen at PORTRAIT  
> mode.

What if the device's most common mode of operation is in landscape mode?

This might be confusing for page authors. My intentions were that the  
device-width should change when changing between landscape and portrait,  
but there are at least two issues with that:

1. If all current implementations don't, implementations will be less  
interoperable, at least in short term.

2. Changing the values of device-width/device-height when rotating the  
device will require a reflow when those values are used. That is a  
performance and a user experience issue.

Rune Lillesveen
Senior Core Developer / Architect
Opera Software ASA
Received on Wednesday, 11 August 2010 08:17:53 UTC

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