[Qgis-developer] Re: Python - recreate the exact Legend in a QTreeWidget

[kimaidou]

Hi all

I managed to reconstruct my legend in my QTreeWidget by using a dictionary
to store the item I have already added in the tree while looping through
groupLayerRelationship !

Cheers
Kimaidou

2011/6/20 kimaidou <kimaidou at gmail.com>

> Hi devs,
>
> I am a bit stuck here....
> I would like to recreate the complete legend tree inside a python plugin. I
> have chosen to use a QtreeWidget to do so.
>
> Imagine I have:
> *****************
> group 0 (empty)
>
> group 1
> |-- group 11
>    |-- layer 11a
>    |-- layer 11b
> |-- layer 1a
>
> layer a
>
> group 2
> |-- group 21
> |-- layer 2a
> ***********************
>
> I have seen the
>
> iface.legendInterface().groupLayerRelationship()
>
> returns usefull information, but in a flat "C-style" way like :
>
>
> [
>   ['group 0', [] ],
>   ['group 1', ['group 11', 'layer_1a_10020100526085601790'] ],
>   ['', ['layer_a_20110617181245226'] ],
>   ['group 2', ['groupe21', 'layer_2a_20110616121558434'] ],
>   ['group 11', ['layer_11a_20100526085601799',
> 'layer_11b_gen20100526100356932'] ],
>   ['groupe21', []]
> ]
>
>
> I would like to loop though this result and create my own hierarchical
> representation such as :
> [
>     'name' : 'group 0' , 'type' : 'group', 'children' : [],
>     'name' : 'group 1' , 'type' : 'group', 'children' : [
>         'name' : 'group 11' , 'type' : 'group', 'children' : [
>             'name' : 'layer 11a' , 'type' : 'layer', 'children' : [],
>             'name' : 'layer 11b' , 'type' : 'layer', 'children' : []
>         ],
>         'name' : 'layer 1a' , 'type' : 'layer', 'children' : []
>     ],
>     'name' : 'layer a' , 'type' : 'layer', 'children' : [],
>     'name' : 'group 2' , 'type' : 'group', 'children' : [
>         'name' : 'group 21' , 'type' : 'group', 'children' : [],
>         'name' : 'layer 2a' , 'type' : 'layer', 'children' : []
>     ]
> ]
>
> I have tried hard since yesterday, but have not succeeded... Has anyone
> already encoutered this need ?
>
> Thanks in advance,
> kimaidou
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/qgis-developer/attachments/20110620/eeb0c3f5/attachment.html