[fusion-dev] Patch for #271 http://trac.osgeo.org/fusion/attachment/ticket/271/BasemapSwitcher.patch review

Zak James zjames at dmsolutions.ca
Fri Jul 31 09:22:52 EDT 2009 

Arthur,

Any map can be a base map, the only limitation is that there can only  
be one layer marked as the base map at once. Single Tile map layers  
can be the base layer, so when your widget has 'None' selected, the  
SingleTile MapGuide map is the base layer. Your assertion in 2. is  
also false - there's nothing to stop a commercial layer and any number  
of other tiled layers from being displayed at the same time.

zak
--
Zak James
Applications and Software Development
DM Solutions Group Inc.
http://www.dmsolutions.ca
http://research.dmsolutions.ca



On 30 Jul 2009, at 23:20, Arthur Liu wrote:

> Thanks for your replay.
>
> Actually, the purpose to provide this widget is just switch between  
> the commercial layers and close all the commercial layers.
>
> I have some confusion about the concept of Basemap. And this is my  
> understanding, if there're any stupid errors please point them out .
>
> 1. Only the tiled map can be the basemap, which means the maps which  
> contains only dynamic layers can't be the basemap. So, the  
> BasemapSwitcher must shown all the tiled maps and commercial maps.  
> Could user close all the basemaps and show dynamic maps only?(that's  
> why there's a None item in the widget)
>
> 2. Since tiled map is a basemap, so the tiled map and commercial  
> maps cannot shown at the same time.
>
> 3. How can I distinguish tiled maps and normal maps in application  
> definition's map group tag? The only different I can see is the  
> <SingleTile> tag. For tiled map, it's false, and for normal map,  
> it's true.
>
> Regards,
> Arthur
>
> -----Original Message-----
> From: Chris Claydon
> Sent: Friday, July 31, 2009 6:12 AM
> To: Jason Birch; Arthur Liu; fusion-dev at lists.osgeo.org
> Subject: RE: [fusion-dev] Patch for #271 http://trac.osgeo.org/fusion/attachment/ticket/271/BasemapSwitcher.patch 
>  review
>
> Hi Jason,
>
> Does the current version of Fusion support using a dynamic MapGuide  
> layer overlaid on a tiled MapGuide layer (and does it work correctly)?
>
> Arthur,
>
> Looking at the widget code, if there are two or more MapGuide maps  
> involved, choosing "None" will always set the one that is defined  
> last to be the base map. This may not be the desired behavior.
>
> Instead of using "None" could we use the name of the MapGuide map?  
> It seems we use the map name for the other base maps already. It  
> would be nice to be able to define the labels that are used for  
> these options as part of the widget configuration. Is that a  
> possibility? It seems like you could probably achieve the same  
> result by adjusting the map names in the widget definition XML, so  
> maybe there's a workaround.
>
> Also, there are quite a few unlocalized strings defined in the  
> widget. Would it be possible to localize them? One of the DM Solns  
> developers may be able to advise how to do this, if it's possible.
>
> Chris.
>
> -----Original Message-----
> From: fusion-dev-bounces at lists.osgeo.org [mailto:fusion-dev-bounces at lists.osgeo.org 
> ] On Behalf Of Jason Birch
> Sent: Wednesday, July 29, 2009 6:27 PM
> To: Arthur Liu; fusion-dev at lists.osgeo.org
> Subject: RE: [fusion-dev] Patch for #271 http://trac.osgeo.org/fusion/attachment/ticket/271/BasemapSwitcher.patch 
>  review
>
> For my users, "None" just wouldn't make sense.  They don't  
> understand what a base map is, and would want an easy to use  
> chooser.  This is what I would ideally like to be able to do:
>
> "Satellite" (Google)
> "Streets" (MapGuide map definition with tile layers only)
> "Parcels" (MapGuide map definition with tile layers only)
>
> On top of this base map choice, I would layer a MapGuide dynamic/ 
> singleTile map.
>
> Combining tile layers into a dynamic MapGuide map is dangerous, and  
> limits you from having multiple mapguide-based tile map sources in  
> the same map.
>
> Jason
>
> ________________________________
> From: Arthur Liu [arthur.liu at autodesk.com]
> Sent: Tuesday, July 28, 2009 10:17 PM
> To: Jason Birch; fusion-dev at lists.osgeo.org
> Subject: RE: [fusion-dev] Patch for #271 http://trac.osgeo.org/fusion/attachment/ticket/271/BasemapSwitcher.patch 
>  review
>
> Hi Jason,
>
> Thanks for your comment.  Actually, the controls items would be :
>
> - Satellite (by Google)
> - Composite (by Google)
> - None
>
> If the user selected the "None" item, the MapGuide map will be set  
> as basemap, and it just looked like the original MapGuide map  
> without any commercial maps.
> I am not sure if I totally understand your question, if not, please  
> point it out.
>
> Thanks,
> Arthur
>
> From: Jason Birch [mailto:Jason.Birch at nanaimo.ca]
> Sent: Tuesday, July 28, 2009 11:11 PM
> To: fusion-dev at lists.osgeo.org
> Cc: Arthur Liu
> Subject: RE: [fusion-dev] Patch for #271 http://trac.osgeo.org/fusion/attachment/ticket/271/BasemapSwitcher.patch 
>  review
>
> I unfortunately don't really understand the code, so this might be a  
> stupid question.
>
> With this control, does it allow the map developer to configure a  
> set of basemaps including both MapGuide tiled maps and commercial  
> maps, and switch between them?  For instance, could I present the  
> user with a choice of the following base maps via this control?
>
> - Satellite (by Google)
> - Composite (by Google)
> - Parcels (mine)
>
> With MapGuide tile layers, it's not really sustainable to keep them  
> in the same map as untiled layers (any changes to the untiled layers  
> triggers a cache rebuild) so it would be nice to be able to define  
> both a MapGuide single tile overlay and a MapGuide base map as  
> separate items.
>
> Jason
>
>
> From: fusion-dev-bounces at lists.osgeo.org [mailto:fusion-dev-bounces at lists.osgeo.org 
> ] On Behalf Of Arthur Liu
> Sent: Monday, July 27, 2009 8:29 PM
> To: fusion-dev at lists.osgeo.org
> Subject: [fusion-dev] Patch for #271 http://trac.osgeo.org/fusion/attachment/ticket/271/BasemapSwitcher.patch 
>  review
>
> Hi,
>
> Would you please review the patch for ticket 271( http://trac.osgeo.org/fusion/ticket/271 
>  ) at http://trac.osgeo.org/fusion/attachment/ticket/271/BasemapSwitcher.patch 
>  ?
>
> Description :
> Currently, fusion support Google, Yahoo and Virtual Earth services  
> as basemaps shown behind the overlaid MapGuide layers. However  
> there's no proper widget to switch basemaps in MapGuide. That means  
> there's no way for end-user to change the basemaps. This widget will  
> help end-user to control the commercial base maps(turn on/off  
> commercial basemaps or switch the basemaps).
>
> Thanks,
> Arthur
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