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Re: Splitting background-position in two different attributes

From: Øyvind Stenhaug <oyvinds@opera.com>
Date: Thu, 18 Aug 2011 14:51:55 +0200
To: www-style@w3.org
Message-ID: <op.v0et0tmsbunlto@oyvinds-desktop>
On Thu, 18 Aug 2011 14:08:48 +0200, Alan Gresley <alan@css-class.com>  

> Thank you Brian. The examples you gave has made me think. At this moment  
> of time, neither 'background-position-x' nor 'background-position-y can  
> be expressed in shorthand values for 'background' I'm not proposing any  
> syntax (just made up to express what I see as an issue) but something  
> like the following would have to appear in a 'background' shorthand  
> declaration.

Nothing would *have to* be added, shorthands don't necessarily have to be  
able to set every possible combination of values the individual properties  
allow. For instance, the border shorthand can't be used to set different  
border colors on different sides.

And since shorthands always set a value for every property that has been  
omitted anyway, the only point in adding a new syntax would be to be able  
to skip one keyword/value:

> background: url(wow.png) x(20px) no-repeat;

background: url(wow.png) 20px no-repeat;
background: url(wow.png) 20px 0 no-repeat;
depending on which one you want

> background: white url(who.png) y(10%);

background: white url(who.png) center 10%;
background: white url(who.png) 0 10%;
depending on which one you want

> background: url(we.png) xy(20px, 10%) repeat-y;

background: url(we.png) 20px 10% repeat-y;

Øyvind Stenhaug
Core Norway, Opera Software ASA
Received on Thursday, 18 August 2011 12:52:36 UTC

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