[OpenLayers-Trac] Re: [OpenLayers] #2247: getMousePosition off due to borders and relative/absolute positioning

OpenLayers trac-20090302 at openlayers.org
Fri Nov 5 08:30:33 EDT 2010

#2247: getMousePosition off due to borders and relative/absolute positioning
 Reporter:  chrelad@…                                                                          |       Owner:  euzuro      
     Type:  bug                                                                                |      Status:  new         
 Priority:  critical                                                                           |   Milestone:  2.11 Release
Component:  Events                                                                             |     Version:  2.8         
 Keywords:  mouse position getMousePosition offset click coordinates border relative position  |       State:  Commit      
Changes (by erilem):

  * state:  Review => Commit


 Ok, here are the actual profile results in FF3:

 With patch
 getMousePosition 1646 calls, 9.16%, 154ms own time, 215ms time, 0.131ms
 pagePosition 24 calls, 0.16%, 2.7ms own time, 2.9ms time, 0.124ms avg
 getViewportElement 48 calls, 0.04%, 0.59ms own time, 0.59ms time, 0.012ms

 Without patch
 getMousePosition 1336 calls, 9.38%, 147ms own time, 175ms time, 0.132ms
 pagePosition 21 calls, 0.35%, 5.52ms own time, 11.54ms time, 0.55ms avg

 So the patch doesn't have a negative impact on performance, it even has a
 slight positive impact!

 Yet, lots of time is spent in {{{getMousePosition}}} (w/ and w/o the
 patch), and it would be great to optimize that, I'm not sure it's possible

 Thanks for the patch Andreas, it all looks good to me, please commit.

Ticket URL: <http://trac.openlayers.org/ticket/2247#comment:11>
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