[Bugs] #4034 Imageviewer UNSP: ImageViewer: zoom gesture center

[Sugar Labs Bugs]

#4034: ImageViewer: zoom gesture center
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    Reporter:  godiard                    |          Owner:  humitos    
        Type:  defect                     |         Status:  new        
    Priority:  Unspecified by Maintainer  |      Milestone:  0.98       
   Component:  Imageviewer                |        Version:  Unspecified
    Severity:  Unspecified                |       Keywords:             
Distribution:  Unspecified                |   Status_field:  Unconfirmed
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Comment(by humitos):

 Replying to [comment:6 dsd]:
 > Or you can store the signal ID when you connect it in some "global"
 variable and block it using that (g_signal_handler_block).

 Yes, but the thing here is that I wanted to disconnect some default
 behaviour: I didn't connect the adjustment to anything and it was moved by
 default when the widget changes it size. So, when I change the widget's
 size and the adjustment value, the adjustment was moved to 0,0 in the
 middle of my actions and a flickering was noticed.

 I have to check this again after applying this patch:
 http://bugs.sugarlabs.org/attachment/ticket/4060/0001-scrolledwindow-Stop-
 scrolling-when-a-second-touch-po.patch

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Ticket URL: <http://bugs.sugarlabs.org/ticket/4034#comment:7>
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