[OpenLayers-Trac] [OpenLayers] #472: overviewmap should display cross when getting too narrow

[OpenLayers]

#472: overviewmap should display cross when getting too narrow
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  Reporter:  openlayers           |       Owner:  tschaub    
      Type:  feature              |      Status:  new        
  Priority:  minor                |   Milestone:  2.5 Release
 Component:  Control.OverviewMap  |     Version:             
Resolution:                       |    Keywords:             
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Comment (by openlayers):

 Currently, when OverviewMap.extentRectangle gets too small, it disappears
 entirely.  I like the idea of the cross-hair - that's what MapServer does,
 and it works well.  But if we aren't going to have that, perhaps we could
 at least keep extentRectangle from disappearing?

 In OverviewMap.setRectPxBounds(), we have two lines:

 {{{
         this.extentRectangle.style.height = parseInt(Math.max(bottom -
 top, 0))+ 'px';
         this.extentRectangle.style.width = parseInt(Math.max(right - left,
 0)) + 'px';

 }}}

 If we change this to:

 {{{
         this.extentRectangle.style.height = parseInt(Math.max(bottom -
 top, 2))+ 'px';
         this.extentRectangle.style.width = parseInt(Math.max(right - left,
 2)) + 'px';

 }}}

 extentRectangle never disappears.  (I've been playing with this in IE6,
 and IE6, if height and width are 1, extentRectangle still disappears.)

-- 
Ticket URL: <http://trac.openlayers.org/ticket/472#comment:3>
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