[Bugs] #2708 UNSP: Paint should save control settings in its Journal entry

[Sugar Labs Bugs]

#2708: Paint should save control settings in its Journal entry
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    Reporter:  greenfeld                  |          Owner:  godiard                    
        Type:  enhancement                |         Status:  new                        
    Priority:  Unspecified by Maintainer  |      Milestone:  Unspecified by Release Team
   Component:  Paint                      |        Version:  0.92.x                     
    Severity:  Unspecified                |       Keywords:                             
Distribution:  OLPC                       |   Status_field:  Unconfirmed                
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Comment(by humitos):

 I could save the state using {{{write_file}}} and load it using
 {{{read_file}}} without any problem. I'm restoring the last tool used by
 the user but I can't restore the colors: "fill color" and "stroke color"
 yet.

 I'm using {{{simplejson}}} to store the data as string into
 {{{self.metadata['state']}}}.

 I didn't find the way to let the GUI know that should use another color
 instead the default one. With "GUI" I refer to Area class.

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Ticket URL: <http://bugs.sugarlabs.org/ticket/2708#comment:2>
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