I would like to freeze the names of layers in TOC. Is there any way to do this via QGIS config or PyQGIS?
I´m using QGIS Wien.
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"freeze names" ... u mean forbid any name change ? – snaileater May 19 '15 at 16:39
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Exactly @snaileater. – Sassá May 19 '15 at 16:55
You can (sort of) achieve it by altering the QGIS layer tree model. Write the following code snippet in a QGIS Python console:
root = QgsProject.instance().layerTreeRoot()
model = QgsLayerTreeModel(root)
model.setFlag(QgsLayerTreeModel.ShowLegend)
model.setFlag(QgsLayerTreeModel.ShowLegendAsTree)
model.setFlag(QgsLayerTreeModel.AllowNodeReorder)
model.setFlag(QgsLayerTreeModel.AllowNodeChangeVisibility)
model.setFlag(QgsLayerTreeModel.AllowLegendChangeState)
model.setFlag(QgsLayerTreeModel.AllowNodeRename,False)
tv=iface.layerTreeView()
tv.setModel(model)
After running the code, renaming layers (and groups) from the layer tree is no longer possible, although it can be done via the Properties dialog or via PyQGIS.
I guess that would be the most you can get.
answered May 20 '15 at 4:08
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Grateful @gcarrillo! I think that this solves the question. I'll try. Thanks again! – Sassá May 20 '15 at 11:49
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1
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You can reference/embed the layers from a second file. (by using the "Layer - Embed Layers and groups" menu entry)
Layers that are embedded like that are read-only (so you can't rename them). You can move them around temporarily but those changes don't get saved.
Sassá, i'm not an expert but here's what i would do :
At startup maintain a lookup table containing the layer id and the corresponding name u want to be left unchanged.
Then i would use the layerNameChanged signal with a line of this kind :
self.curLayer.layerNameChanged.connect(self.watchName)
u do that for every layer of your project.
then in the slot "watchName" u try a :
def watchName(self):
self.curLayer.setLayerName('the_right_name_coming_from_your_lookup_table')
i didn't write all the necesseray code to create the lookup table.
Hope this can help ...
