[fusion-trac] #165: Mouse wheel zoom results in multiple redundant image requests

Fusion trac_fusion at osgeo.org
Fri Jul 31 13:58:23 EDT 2009


#165: Mouse wheel zoom results in multiple redundant image requests
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 Reporter:  chrisclaydon  |         Owner:  zjames
     Type:  defect        |        Status:  new   
 Priority:  P2            |     Milestone:  2.0   
Component:  Widgets       |       Version:  SVN   
 Severity:  Major         |    Resolution:        
 Keywords:                |   External_id:        
    State:  Review        |       Browser:  All   
       Os:  All           |  
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Comment (by zjames):

 I looked at how the MapGuide ajax viewer handles this and I can't see a
 way to achieve it within the context of OpenLayers without essentially
 replacing the OpenLayers view with a map image. OpenLayers does have a
 scaling mode but I can't see a way to invoke it that does not fire a
 request for the map itself, creating the unnecessary draws we're trying to
 avoid. Things only get more complicated with tiled layers in the view. I
 didn't test, but does the ajax viewer support this scaling with tiles?

-- 
Ticket URL: <http://trac.osgeo.org/fusion/ticket/165#comment:6>
Fusion <http://trac.osgeo.org/fusion>
Fusion is a web-mapping application development framework for MapServer and MapGuide OS.


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