[OpenLayers-Trac] [OpenLayers] #3388: Dragging along edge of a restricted extent is sticky

[OpenLayers]

#3388: Dragging along edge of a restricted extent is sticky
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 Reporter:  jkfranci  |       Owner:              
     Type:  bug       |      Status:  new         
 Priority:  major     |   Milestone:  2.11 Release
Component:  Map       |     Version:  2.11 RC1    
 Keywords:            |       State:              
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 Across all chrome/FF/and likely all browsers. This bug is new for 2.11rc1
 and is not in 2.10.

 '''Problem'''

 The Map moveByPx code invalidates a drag when the restricted extent is
 violated, unlike the moveTo code which corrects for the restricted extent
 by nudging the lonlat back inside the restricted extent. This causes
 "sticky" edges when dragging along a restricted extent as many of these
 events are cancelled, or if the extent is narrower than the viewport in
 any way, a frozen map. This can be observed at the demo:

 '''Reproducing the error'''

 [http://openlayers.org/dev/examples/restricted-extent.html]

 Zoom in, and then move up to the top edge of the restricted extent. Then
 drag down in a 45 degree angle. Instead of capturing the side to side
 motion and locking the vertical motion, the map stutters or does not move
 at all.

 '''Possible Solution'''

 The solution would be to copy the restricted extent code for correcting
 the lonlat from moveTo into moveByPx in Map.js. This correction code needs
 to be in both functions or else you cannot drag a restricted extent that
 is wider than the viewport, but shorter, or vice versa.

-- 
Ticket URL: <http://trac.openlayers.org/ticket/3388>
OpenLayers <http://openlayers.org/>
A free AJAX map viewer