Good question, let me check the code ... looking at the implementation of
GetMap we have:
if (!merged) {
WMSLayer Layer = new WMSLayer(wms, gt2Layer);
Layer.setTitle(wmsLayer.prefixedName());
mapContent.addLayer(Layer);
}
So GeoServer sets a title, but does not set the background color.
Looking at the GeoTools implementation in WMSLayer that does the work ...
it uses transparent by default:
if(backgroundColor == null) {
mapRequest.setTransparent(true);
} else {
String rgba = Integer.toHexString(backgroundColor.getRGB());
String rgb = rgba.substring(2, rgba.length());
mapRequest.setBGColour("0x" + rgb.toUpperCase());
mapRequest.setTransparent(backgroundColor.getAlpha() < 255);
}
Expect we need a bug report for this one, I did update the communication
page with handy search boxes if you want to check if the issue is reported
already. http://geoserver.org/comm/
Jody Garnett
On Wed, Jul 30, 2014 at 1:55 PM, Milo van der Linden <[email protected]>
wrote:
> Hello list,
>
> I noticed that geoserver adds BG=0xFFFFFF to the requests when connecting
> to a remote wms service. In my case this is a mapserver service where we
> hardcoded the png outputformat to never be transparent and blue so we get
> the correct ocean-effect.
>
> Is there a way to bypass the BGCOLOR parameter? Or does this require
> enhancements to geoserver itself?
>
> Thanks and kind regards,
>
> Milo
>
>
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