[OpenLayers-Trac] Re: [OpenLayers] #3643: Feature drawn in incorrect position in Google Chrome 18

[OpenLayers]

#3643: Feature drawn in incorrect position in Google Chrome 18
----------------------------+-----------------------------------------------
 Reporter:  wingmanzz       |       Owner:  crschmidt
     Type:  bug             |      Status:  new      
 Priority:  minor           |   Milestone:           
Component:  Layer.Vector    |     Version:  2.11     
 Keywords:  vector, chrome  |       State:           
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Comment(by dbussche):

 According to my own observation the incorrect positioning of vectors only
 occur in: Google Chrome 18 with frame, increasing map div size or
 fullscreen browser.
 On github.com (link above) two workarounds are proposed: a) give priority
 to CANVAS renderer and b) resizing svg root element automatically.
 I tried a), but got some issues with OpenLayers/CANVAS in Chrome (for
 instance, setOpacity does not work). So I worked out b) in a patch to
 OpenLayers:
 in Map.js,
 inside updateSize: function(),
 after if (newSize && !isNaN(newSize.h) && !isNaN(newSize.w)) { ... },
 add the following code:
  if (OpenLayers.String.contains(navigator.userAgent.toLowerCase(),
 "chrome")) {
      var mapDiv = this.div;
      for (var i = 0; i < this.layers.length; i++) {
          var layer = this.layers[i];
          if (layer.CLASS_NAME == "OpenLayers.Layer.Vector") {
              var size = this.getCurrentSize();
              var svgRoot =
 document.getElementById(layer.renderer.container.id + "_svgRoot");
              svgRoot.style.width = size.w + "px";
              svgRoot.style.height = size.h + "px";
          }
      }
  }
 OpenLayers.js with this patch can be downloaded from
 http://www.fietsrouteplanner.nl/download/OpenLayers.js

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Ticket URL: <http://trac.openlayers.org/ticket/3643#comment:3>
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