[mapguide-internals] changing mapguide's image type

[Trevor Wekel]

Yes.  I think so.  The tiles and the overlay are two separate HTTP
requests.  Tiles could be JPG and overlay could be PNG.  If you're using
tiles, then the overlay should be PNG so transparency can be used to
show the tiles underneath.

I'm not sure this has been tested though.  It would be interesting to
see if the various browsers can deal with overlaying a transparent PNG
image over a non-transparent JPG.

And I agree that image type and image size should ideally be set per
base layer group.  However, that's a fair bit more work to implement
(map definition, Web Studio, Studio, viewers) than adding configuration
parameters for default behaviours.

Thanks,
Trevor

-----Original Message-----
From: mapguide-internals-bounces at lists.osgeo.org
[mailto:mapguide-internals-bounces at lists.osgeo.org] On Behalf Of Paul
Spencer (External)
Sent: Monday, February 05, 2007 10:57 AM
To: MapGuide Internals Mail List
Subject: Re: [mapguide-internals] changing mapguide's image type

Ideally the image type would be set per base layer group.

Paul

On 5-Feb-07, at 12:43 PM, Jason Birch wrote:

>
> So, if the tiling service image type could be specified, would that 
> allow Paul to use JPG for the tiles, and the interface would still use

> PNG for the overlays?
>
> Jason
>
> -----Original Message-----
> From: mapguide-internals-bounces at lists.osgeo.org
> [mailto:mapguide-internals-bounces at lists.osgeo.org] On Behalf Of 
> Trevor Wekel
> Sent: Monday, February 05, 2007 09:40
> To: MapGuide Internals Mail List
> Subject: RE: [mapguide-internals] changing mapguide's image type
>
>
> Yes.  Andy is right.  If you're not using tiles then the image type 
> can be specified.  However, tile generation is currently hardcoded as 
> PNG.
>
> Thanks,
> Trevor
> _______________________________________________
> mapguide-internals mailing list
> mapguide-internals at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/mapguide-internals

+-----------------------------------------------------------------+
|Paul Spencer                          pspencer at dmsolutions.ca    |
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|Chief Technology Officer                                         |
|DM Solutions Group Inc                http://www.dmsolutions.ca/ |
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