On 03.08.2016 15:44, Martin Dobias wrote:
Hi Sandro
On Wed, Aug 3, 2016 at 3:25 PM, Sandro Mani <[email protected]> wrote:
Hi
For a project I need independent QgsMapCanvas instances, in particular a
child view which is unrelated to the main view (including its layertree).
(Easy example: the main view displays a city, and if the user clicks on a
"show building schema" button in the building feature attribute dialog, the
schema of the building is opened in a secondary view. The layers of the
building schema should not appear in the main layer tree however).
Currently this is not possible: while one can set the layers individually
for each QgsMapCanvas, the QgsMapSetting ends up storing the layer ids and
hence they must be stored in the QgsMapLayerRegistry. Items which are stored
in the QgsMapLayerRegistry will always be visible in the application legend
tree.
You can use QgsMapLayerRegistry.instance().addMapLayer(layer, False) -
the layer will get to the registry, but it will not end up in the
layer tree. Doesn't it solve your problem?
Oh, why think small when you can think big... I think I somehow just
completely missed that :)
Thanks!
Sandro
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