[mapguide-users] Tooltip on MapGuide Web API

[gatopardo]

USING OPEN METHOD
mapGuideMap = new MgMap(this.mapGuideSiteCnn);
mapGuideMap.Open(this.MapGuideResourceService,mapResourceIdentifier);
//render map
byteReader = mapGuideRenderingService.RenderMap(mapGuideMap, selection,
mgEnvelope, width, height, new MgColor(backColor), "PNG", true);

mapGuideMap.Save(mapGuideResourceService);
//this doesn't throw any exception, but GetDisplayHeight/GetDisplayWidth
returns 0

//If i use this other overload
mapGuideMap.Save(mapGuideResourceService,new
MgResourceIdentifier(resourceId));
//this throws "An exception occurred in the XML parser" exception

USING CREATE METHOD
mapGuideMap = new MgMap(this.mapGuideSiteCnn);
mapGuideMap.Create(mapGuideResourceService, mapResourceIdentifier,
"testMap");
//render map
byteReader = mapGuideRenderingService.RenderMap(mapGuideMap, selection,
mgEnvelope, width, height, new MgColor(backColor), "PNG", true);

mapGuideMap.Save(mapGuideResourceService);
//this throws "Null reference" exception

//If i use this other overload
mapGuideMap.Save(mapGuideResourceService,new
MgResourceIdentifier(resourceId));
//this throws "An exception occurred in the XML parser" exception




Jackie Ng wrote:
> 
> Which constructor for MgMap did you use and which overload of
> Create()/Open()/Save() did you use?
> 
> - Jackie
> 
> 
> gatopardo wrote:
>> 
>> I've tried to open the map with MgMap.Create() and with MgMap.Open()
>> I've tried to call Save(), but doesnt' work.
>> 
>> It could be a bug? Or I am doing something wrong?
>> 
>> 
>> 
>> Chris Claydon wrote:
>>> 
>>> I *think* that when you call RenderMap, it will set the width and height
>>> for the in-memory map object. Try calling Save() on the map to save the
>>> values back to the session repository before making the calls to
>>> GetDisplayWidth/GetDisplayHeight.
>>> 
>>> Chris.
>>> 
>>> -----Original Message-----
>>> From: mapguide-users-bounces at lists.osgeo.org
>>> [mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of gatopardo
>>> Sent: Tuesday, May 26, 2009 7:05 AM
>>> To: mapguide-users at lists.osgeo.org
>>> Subject: RE: [mapguide-users] Tooltip on MapGuide Web API
>>> 
>>> 
>>> I've tried QueryFeatures on MgRenderingService, but it throws an
>>> exception.
>>> I've been looking the MgRenderingService source code, and the exception
>>> is
>>> because the map has the height, width and scale equal to 0.
>>> 
>>> I don't know how can I set this values on Web Api. Because the map
>>> doesn't
>>> have setDisplayWidth or setDisplayHeight methods, only have
>>> GetDisplayWidth
>>> and GetDisplayHeight. Both returns 0.
>>> 
>>> First of all I have rendered map images, but the map object doesn't save
>>> the
>>> render height and width.
>>> So I think the real problem is how to make that the MgMap Object
>>> "remembers"
>>> the last render height and width parameters, or how to set them.
>>> 
>>> 
>>> Chris Claydon wrote:
>>>> 
>>>> I'm pretty sure that QUERYMAPFEATURES ends up calling the QueryFeatures
>>>> method on the MgRenderingService. You'll need to create a geometry
>>>> object
>>>> that corresponds to the point you're clicking on. It is best to make it
>>>> a
>>>> small square rather than a single point, in order for the spatial
>>>> filter
>>>> to pick up the underlying feature. And it should use coordinates in the
>>>> same coordinate system as the map (not image pixel cords).
>>>> 
>>>> Chris.
>>>> 
>>>> From: mapguide-users-bounces at lists.osgeo.org
>>>> [mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of Kenneth
>>>> Skovhede, GEOGRAF A/S
>>>> Sent: Monday, May 25, 2009 7:35 AM
>>>> To: MapGuide Users Mail List
>>>> Subject: Re: [mapguide-users] Tooltip on MapGuide Web API
>>>> 
>>>> The operation is called "QUERYMAPFEATURES", but I can't seem
>>>> to find it as a function from the Web API.
>>>> You can see it in use if you look in the file:
>>>> C:\program
>>>> files\MapGuideOpenSource2.0\WebServerExtensions\www\viewerfiles\ajaxmappane.templ
>>>> line 2555.
>>>> 
>>>> You may also want to read this thread:
>>>> http://lists.osgeo.org/pipermail/mapguide-users/2007-January/004818.html
>>>> 
>>>> 
>>>> Regards, Kenneth Skovhede, GEOGRAF A/S
>>>> 
>>>> 
>>>> gatopardo skrev:
>>>> 
>>>> Nobody can help me?
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> gatopardo wrote:
>>>> 
>>>> 
>>>> 
>>>> How could I get the Tooltip on a point using MapGuide Web API?
>>>> 
>>>> 
>>>> 
>>>> Example:
>>>> 
>>>> I have generated an image using MgRenderingService.RenderMap, and after
>>>> 
>>>> that I want to get the tooltip on a point of this image, using the
>>>> 
>>>> coordinates on image pixels or converting them to lat-lon.
>>>> 
>>>> 
>>>> 
>>>> But I haven't found any method that makes this.
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> _______________________________________________
>>>> mapguide-users mailing list
>>>> mapguide-users at lists.osgeo.org
>>>> http://lists.osgeo.org/mailman/listinfo/mapguide-users
>>>> 
>>>> 
>>> 
>>> -- 
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>>> 
>>> _______________________________________________
>>> mapguide-users mailing list
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>>> 
>>> 
>> 
>> 
> 
> 

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