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Have TopoViewer use custom layer ordering

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This is used to make sure edges are rendered above faces and nodes
above edges, despite legend order.
This commit is contained in:
Sandro Santilli 2019-08-27 11:42:54 +02:00
parent 3abbc0f178
commit a01db6409c
1 changed files with 31 additions and 3 deletions
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34
python/plugins/db_manager/db_plugins/postgis/plugins/qgis_topoview/__init__.py
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@ -6,9 +6,10 @@ Name : TopoViewer plugin for DB Manager
Description : Create a project to display topology schema on Qgis
Date : Sep 23, 2011
copyright : (C) 2011 by Giuseppe Sucameli
email : brush.tyler@gmail.com
(C) 2019 by Sandro Santilli
email : strk@kbt.io
Based on qgis_pgis_topoview by Sandro Santilli <strk@keybit.net>
Based on qgis_pgis_topoview by Sandro Santilli <strk@kbt.io>
***************************************************************************/
/***************************************************************************
@ -243,6 +244,8 @@ def run(item, action, mainwindow):
QgsProject.instance().addMapLayers(nodeLayers, False)
QgsProject.instance().addMapLayers(edgeLayers, False)
# Organize layers in groups
groupFaces = QgsLayerTreeGroup(u'Faces')
for layer in faceLayers:
nodeLayer = groupFaces.addLayer(layer)
@ -264,7 +267,32 @@ def run(item, action, mainwindow):
supergroup = QgsLayerTreeGroup(u'Topology "%s"' % toponame)
supergroup.insertChildNodes(-1, [groupFaces, groupNodes, groupEdges])
QgsProject.instance().layerTreeRoot().addChildNode(supergroup)
layerTree = QgsProject.instance().layerTreeRoot()
layerTree.addChildNode(supergroup)
# Set layers rendering order
order = layerTree.layerOrder()
order.insert(0, order.pop(order.index(layerFaceMbr)))
order.insert(0, order.pop(order.index(layerFaceGeom)))
order.insert(0, order.pop(order.index(layerEdge)))
order.insert(0, order.pop(order.index(layerDirectedEdge)))
order.insert(0, order.pop(order.index(layerNode)))
order.insert(0, order.pop(order.index(layerFaceSeed)))
order.insert(0, order.pop(order.index(layerNodeLabel)))
order.insert(0, order.pop(order.index(layerEdgeLabel)))
order.insert(0, order.pop(order.index(layerNextLeft)))
order.insert(0, order.pop(order.index(layerNextRight)))
order.insert(0, order.pop(order.index(layerFaceLeft)))
order.insert(0, order.pop(order.index(layerFaceRight)))
layerTree.setHasCustomLayerOrder(True)
layerTree.setCustomLayerOrder(order)
finally: