[OpenLayers-Users] Browser not supported with Canvas renderer

Andreas Hocevar ahocevar at opengeo.org
Wed Jul 11 09:57:50 PDT 2012


It is OpenLayers.CANVAS_SUPPORTED, and you'll need OpenLayers 2.12 for
this to work. And you need to set this to true *after* OpenLayers is
loaded.

Andreas.

On Wed, Jul 11, 2012 at 6:13 PM, Rob Hyx <robhyx at gmail.com> wrote:
> Thanks Andreas, I'm looking at the documentation, do you mean
> OpenLayers.Util.CANVAS_SUPPORTED? I tried both with no luck.
>
> On Wed, Jul 11, 2012 at 10:55 AM, Andreas Hocevar <ahocevar at opengeo.org> wrote:
>> Hi,
>>
>> a hack to make the Canvas renderer think that Canvas is supported
>> would be to add the following at the top of your application script:
>>
>> OpenLayers.CANVAS_SUPPORTED = true;
>>
>> Andreas.
>>
>> On Wed, Jul 11, 2012 at 4:35 PM, Rob Hyx <robhyx at gmail.com> wrote:
>>> Hello all,
>>>
>>> I am having an issue in IE 8. I am using OP 2.11 with ExCanvas to
>>> untilize Canvas tags in older browsers. I realize this is a long shot
>>> as it's probably a hack, but I figure I'd at least ask: When I
>>> construct my vector layer with the canvas renderer I get a
>>> 'browserNotSupported' alert box (not surprisingly). Later when I go to
>>> add features to the map I get: this.renderer is null or not an object.
>>>
>>> First question: Is there anyway to supress that alert that comes up?
>>> Second question: Has anyone done this before and know how to get the
>>> vectors to correctly render?
>>>
>>> I assume since OpenLayers recognizes IE 8 as a browser that doesn't
>>> support canvas it just flat out rejects the renderer, hence none is
>>> present when the vectors are added to the map. I tried adding VML and
>>> SVG as well but then I get other problems (Attribute is only valid on
>>> v:image).
>>>
>>> Thanks so much in advance!
>>>
>>> --
>>> HYX
>>> http://hyx-music.com
>>> _______________________________________________
>>> Users mailing list
>>> Users at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/openlayers-users
>>
>>
>>
>> --
>> Andreas Hocevar
>> OpenGeo - http://opengeo.org/
>> Expert service straight from the developers.
>
>
>
> --
> HYX
> http://hyx-music.com
> _______________________________________________
> Users mailing list
> Users at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/openlayers-users



-- 
Andreas Hocevar
OpenGeo - http://opengeo.org/
Expert service straight from the developers.


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