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

[Germán Carrillo]

Hi Kimaidou,

may you share your solution? It may be useful for some people here
(including myself).

Regards,

Germán

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

> 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
>>
>
>
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