[Bugs] #2119 UNSP: Measure waveform capture has missing area due to palette redraw

[Sugar Labs Bugs]

#2119: Measure waveform capture has missing area due to palette redraw
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    Reporter:  quozl                      |          Owner:  walter  
        Type:  defect                     |         Status:  reopened
    Priority:  Unspecified by Maintainer  |      Milestone:          
   Component:  Measure                    |        Version:          
    Severity:  Trivial                    |     Resolution:          
    Keywords:                             |   Distribution:  OLPC    
Status_field:  Unconfirmed                |  
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Changes (by quozl):

  * status:  closed => reopened
  * resolution:  wontfix =>


Comment:

 It will eventually happen with Sugar 0.88 given sufficiently slow
 hardware, and is not a problem with the toolbar implementation, but rather
 due to taking a screenshot by reading the root window without first
 ensuring the display is quiescent.  The attached fix has been tested on
 XO-1 and XO-1.5 and fixes the symptom.

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Ticket URL: <http://bugs.sugarlabs.org/ticket/2119#comment:2>
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