On 29 Nov 2011, at 23:32, Eric Wolf wrote:
> Prior to Potlatch 2.3, I was able to use z-index to display a node with an
> icon based on one tag and a background based on another tag. For instance:
>
> node[FCode=73002] { icon-image: usgs/school.png; z-index: 20; }
> node[Status=GAZ]{ icon-image: usgs/red28.png; z-index: 19; }
> node[Status=EDIT]{ icon-image: usgs/yellow28.png; z-index: 19; }
> node[Status=QC1] { icon-image: usgs/green28.png; z-index: 19; }
>
> Would yield my school.png icon with either a red, yellow or green "halo"
> depending on the value of the "Status" tag.
As far as my understanding of MapCSS goes this sounds like a bug in earlier
versions of Potlatch – the way this should work is that the later icon-image
should overrule the earlier one, as should the later z-index.
> Any hints or suggestions?
I'm not sure that Potlatch supports this, because it's a MapCSS extension, but
some renderers support layer identifiers. This allows you to extend the
selector by specifying a "layer" after selecting the node, your above example
would look something like this:
node[FCode=73002]::School { icon-image: usgs/school.png; z-index: 20; }
node[Status=GAZ]::Background { icon-image: usgs/red28.png; z-index: 19; }
node[Status=EDIT]::Background { icon-image: usgs/yellow28.png; z-index: 19; }
node[Status=QC1]::Background { icon-image: usgs/green28.png; z-index: 19; }
Thanks
Tom Davie
_______________________________________________
Mapcss mailing list
[email protected]
http://lists.openstreetmap.org/listinfo/mapcss
