W3C home > Mailing lists > Public > www-style@w3.org > June 2012

Re: [css4-ui] Scrollbar tracking control

From: Sebastian Zartner <sebastianzartner@gmx.de>
Date: Fri, 22 Jun 2012 07:59:06 +0200
Cc: www-style@w3.org, jackalmage@gmail.com, derhoermi@gmx.net
Message-ID: <20120622055906.220750@gmx.net>
To: Brad Kemper <brad.kemper@gmail.com>
>>How about this:
> > 
> > overflow-attachment-x: [normal | left | right] || <length> | inherit;
> > 
> > overflow-attachment-y: [normal | top | bottom] || <length> | inherit;
> > 
> > with <length> specifying the trap distance to the edge.
> 
> That is on the right track, but the name still feels long. How about
> 'scroll-top' and 'scroll-left' as the property names?
'scroll-top' and 'scroll-left' don't hit the point in my eyes (also not  in 
JavaScript) and having a longer name isn't always bad as long as it  is 
more descriptive as a short one.
 My proposal would also have the benefit that you could combine the value 
in the 'overflow' property and use it as shorthand property. E.g. like 
this:
 
 overflow: scroll normal bottom;
 
 > And it could be writing mode dependent, if we also had those 
> keywords (er, begin/stop and head/foot?
Yes, I didn't consider this before. What about begin/end for both 
properties? What are other properties using here?

> Or whatever it is this week?).
Of course it should be something consistent with other properties' values.

The alternative (when staying with left/right and top/bottom) would be to 
use the :dir() pseudo-class [1]. So somebody would have to write this to 
cover different writing modes:

#foo:dir(ltr) {
   overflow-attachment-x: right;
 }
 
 #foo:dir(rtl) {
   overflow-attachment-x: left;
 }
 
As far as I saw there's no pseudo-class for the writing mode yet, so 
bottom-to-top texts couldn't be covered with this approach.

 Sebastian

[1] http://dev.w3.org/csswg/selectors4/#dir-pseudo
        
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Received on Friday, 22 June 2012 05:59:39 GMT

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