The layout needs to have all the information available:
        node location

 ROElement>>position

        node size

ROElement>>extent

ROElement>>bounds

 

        window / canvas size

ROCamera>>windowSize

ROCamera>>extent  "it counts scale"

ROCamera>>realExtent 

ROCamera>>scale

ROCamera>>position

 

ROLayout does not depends on an ROView or ROCamera. If you need it pass it as an argument to your layout. 

Cheers,

Jura

Now don't we need to know the level of details

> Hi Mathieu,
>
> I am back from a short break. Back to answering question, fixing bugs and addressing issues :-)
>
> Well... the question is the layout should really know about the camera? I like to think that the job of a layout is to properly locate nodes. In the case that the window size matters, then it should be provided to the layout as a parameter.
>
> To position the layout in the middle of a window, I have just added the necessary.
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> view nodes: (Collection withAllSubclasses).
> view edgesFrom: #superclass.
> view radialTreeLayout.
> view center.
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>
> Look at the implementer of #center to see how ROFocusView class>>centerView: is called
>
> Cheers,
> Alexandre
>
>
> On May 13, 2013, at 10:48 AM, mathieubmddehouck@mailoo.org wrote:
>
>> Hi
>>
>> I was working on translating the center of the radial tree at the middle of the window and I faced a problem.
>>
>> I had already faced it when working on the ForceBasedLayout.
>>
>>
>> How does the layout access to his view to get informations ? (Basically it could be very useful to access to the camera to have size informations...)
>>
>>
>> Regards
>>
>> Mathieu
>>
>>
>> _______________________________________________
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>> https://www.iam.unibe.ch/mailman/listinfo/moose-dev
>
> --
> _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:
> Alexandre Bergel  http://www.bergel.eu
> ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.
>
>
>
>
> _______________________________________________
> Moose-dev mailing list
> Moose-dev@iam.unibe.ch
> https://www.iam.unibe.ch/mailman/listinfo/moose-dev


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