def test_group_layer_updates_from_node(self):
"""
Test that group layer child layers are synced correctly from the group node
"""
group_node = QgsLayerTreeGroup('my group')
options = QgsGroupLayer.LayerOptions(QgsCoordinateTransformContext())
group_layer = group_node.convertToGroupLayer(options)
self.assertFalse(group_layer.childLayers())
layer = QgsVectorLayer("Point?field=fldtxt:string", "layer1", "memory")
group_node.addLayer(layer)
self.assertEqual(group_layer.childLayers(), [layer])
layer2 = QgsVectorLayer("Point?field=fldtxt:string", "layer2",
"memory")
group_node.insertLayer(0, layer2)
self.assertEqual(group_layer.childLayers(), [layer, layer2])
layer3 = QgsVectorLayer("Point?field=fldtxt:string", "layer3",
"memory")
layer4 = QgsVectorLayer("Point?field=fldtxt:string", "layer4",
"memory")
layer3_node = QgsLayerTreeLayer(layer3)
layer4_node = QgsLayerTreeLayer(layer4)
group_node.insertChildNodes(1, [layer3_node, layer4_node])
self.assertEqual(group_layer.childLayers(),
[layer, layer4, layer3, layer2])
layer5 = QgsVectorLayer("Point?field=fldtxt:string", "layer5",
"memory")
layer5_node = QgsLayerTreeLayer(layer5)
group_node.addChildNode(layer5_node)
self.assertEqual(group_layer.childLayers(),
[layer5, layer, layer4, layer3, layer2])
group_node.removeChildNode(layer3_node)
self.assertEqual(group_layer.childLayers(),
[layer5, layer, layer4, layer2])
group_node.removeLayer(layer)
self.assertEqual(group_layer.childLayers(), [layer5, layer4, layer2])
group_node.removeChildren(0, 2)
self.assertEqual(group_layer.childLayers(), [layer5])
group_node.removeAllChildren()
self.assertEqual(group_layer.childLayers(), [])
def run(item, action, mainwindow):
db = item.database()
uri = db.uri()
iface = mainwindow.iface
quoteId = db.connector.quoteId
quoteStr = db.connector.quoteString
# check if the selected item is a topology schema
isTopoSchema = False
if not hasattr(item, 'schema'):
mainwindow.infoBar.pushMessage(
"Invalid topology", u'Select a topology schema to continue.',
Qgis.Info, mainwindow.iface.messageTimeout())
return False
if item.schema() is not None:
sql = u"SELECT srid FROM topology.topology WHERE name = %s" % quoteStr(
item.schema().name)
res = db.executeSql(sql)
isTopoSchema = len(res) > 0
if not isTopoSchema:
mainwindow.infoBar.pushMessage(
"Invalid topology",
u'Schema "{0}" is not registered in topology.topology.'.format(
item.schema().name), Qgis.Warning,
mainwindow.iface.messageTimeout())
return False
if (res[0][0] < 0):
mainwindow.infoBar.pushMessage(
"WARNING",
u'Topology "{0}" is registered as having a srid of {1} in topology.topology, we will assume 0 (for unknown)'
.format(item.schema().name, res[0]), Qgis.Warning,
mainwindow.iface.messageTimeout())
toposrid = '0'
else:
toposrid = str(res[0][0])
# load layers into the current project
toponame = item.schema().name
template_dir = os.path.join(current_path, 'templates')
# do not refresh the canvas until all the layers are added
wasFrozen = iface.mapCanvas().isFrozen()
iface.mapCanvas().freeze()
try:
provider = db.dbplugin().providerName()
uri = db.uri()
# Force use of estimated metadata (topologies can be big)
uri.setUseEstimatedMetadata(True)
# FACES
# face mbr
uri.setDataSource(toponame, 'face', 'mbr', '', 'face_id')
uri.setSrid(toposrid)
uri.setWkbType(QgsWkbTypes.Polygon)
layerFaceMbr = QgsVectorLayer(uri.uri(False),
u'%s.face_mbr' % toponame, provider)
layerFaceMbr.loadNamedStyle(os.path.join(template_dir, 'face_mbr.qml'))
face_extent = layerFaceMbr.extent()
# face geometry
sql = u'SELECT face_id, mbr, topology.ST_GetFaceGeometry(%s,' \
'face_id)::geometry(polygon, %s) as geom ' \
'FROM %s.face WHERE face_id > 0' % \
(quoteStr(toponame), toposrid, quoteId(toponame))
uri.setDataSource('', u'(%s\n)' % sql, 'geom', '', 'face_id')
uri.setParam('bbox', 'mbr')
uri.setSrid(toposrid)
uri.setWkbType(QgsWkbTypes.Polygon)
layerFaceGeom = QgsVectorLayer(uri.uri(False), u'%s.face' % toponame,
provider)
layerFaceGeom.setExtent(face_extent)
layerFaceGeom.loadNamedStyle(os.path.join(template_dir, 'face.qml'))
# face_seed
sql = u'SELECT face_id, mbr, ST_PointOnSurface(' \
'topology.ST_GetFaceGeometry(%s,' \
'face_id))::geometry(point, %s) as geom ' \
'FROM %s.face WHERE face_id > 0' % \
(quoteStr(toponame), toposrid, quoteId(toponame))
uri.setDataSource('', u'(%s)' % sql, 'geom', '', 'face_id')
uri.setParam('bbox', 'mbr')
uri.setSrid(toposrid)
uri.setWkbType(QgsWkbTypes.Point)
layerFaceSeed = QgsVectorLayer(uri.uri(False),
u'%s.face_seed' % toponame, provider)
layerFaceSeed.setExtent(face_extent)
layerFaceSeed.loadNamedStyle(
os.path.join(template_dir, 'face_seed.qml'))
# TODO: add polygon0, polygon1 and polygon2 ?
# NODES
# node
uri.setDataSource(toponame, 'node', 'geom', '', 'node_id')
uri.removeParam('bbox')
uri.setSrid(toposrid)
uri.setWkbType(QgsWkbTypes.Point)
layerNode = QgsVectorLayer(uri.uri(False), u'%s.node' % toponame,
provider)
layerNode.loadNamedStyle(os.path.join(template_dir, 'node.qml'))
node_extent = layerNode.extent()
# node labels
uri.setDataSource(toponame, 'node', 'geom', '', 'node_id')
uri.setSrid(toposrid)
uri.setWkbType(QgsWkbTypes.Point)
uri.removeParam('bbox')
layerNodeLabel = QgsVectorLayer(uri.uri(False),
u'%s.node_id' % toponame, provider)
layerNodeLabel.setExtent(node_extent)
layerNodeLabel.loadNamedStyle(
os.path.join(template_dir, 'node_label.qml'))
# EDGES
# edge
uri.setDataSource(toponame, 'edge_data', 'geom', '', 'edge_id')
uri.setSrid(toposrid)
uri.setWkbType(QgsWkbTypes.LineString)
uri.removeParam('bbox')
layerEdge = QgsVectorLayer(uri.uri(False), u'%s.edge' % toponame,
provider)
edge_extent = layerEdge.extent()
# directed edge
uri.setDataSource(toponame, 'edge_data', 'geom', '', 'edge_id')
uri.setSrid(toposrid)
uri.setWkbType(QgsWkbTypes.LineString)
uri.removeParam('bbox')
layerDirectedEdge = QgsVectorLayer(uri.uri(False),
u'%s.directed_edge' % toponame,
provider)
layerDirectedEdge.setExtent(edge_extent)
layerDirectedEdge.loadNamedStyle(os.path.join(template_dir,
'edge.qml'))
# edge labels
uri.setDataSource(toponame, 'edge_data', 'geom', '', 'edge_id')
uri.setSrid(toposrid)
uri.setWkbType(QgsWkbTypes.LineString)
uri.removeParam('bbox')
layerEdgeLabel = QgsVectorLayer(uri.uri(False),
u'%s.edge_id' % toponame, provider)
layerEdgeLabel.setExtent(edge_extent)
layerEdgeLabel.loadNamedStyle(
os.path.join(template_dir, 'edge_label.qml'))
# face_left
uri.setDataSource(toponame, 'edge_data', 'geom', '', 'edge_id')
uri.setSrid(toposrid)
uri.setWkbType(QgsWkbTypes.LineString)
uri.removeParam('bbox')
layerFaceLeft = QgsVectorLayer(uri.uri(False),
u'%s.face_left' % toponame, provider)
layerFaceLeft.setExtent(edge_extent)
layerFaceLeft.loadNamedStyle(
os.path.join(template_dir, 'face_left.qml'))
# face_right
uri.setDataSource(toponame, 'edge_data', 'geom', '', 'edge_id')
uri.setSrid(toposrid)
uri.setWkbType(QgsWkbTypes.LineString)
uri.removeParam('bbox')
layerFaceRight = QgsVectorLayer(uri.uri(False),
u'%s.face_right' % toponame, provider)
layerFaceRight.setExtent(edge_extent)
layerFaceRight.loadNamedStyle(
os.path.join(template_dir, 'face_right.qml'))
# next_left
uri.setDataSource(toponame, 'edge_data', 'geom', '', 'edge_id')
uri.setSrid(toposrid)
uri.setWkbType(QgsWkbTypes.LineString)
uri.removeParam('bbox')
layerNextLeft = QgsVectorLayer(uri.uri(False),
u'%s.next_left' % toponame, provider)
layerNextLeft.setExtent(edge_extent)
layerNextLeft.loadNamedStyle(
os.path.join(template_dir, 'next_left.qml'))
# next_right
uri.setDataSource(toponame, 'edge_data', 'geom', '', 'edge_id')
uri.setSrid(toposrid)
uri.setWkbType(QgsWkbTypes.LineString)
uri.removeParam('bbox')
layerNextRight = QgsVectorLayer(uri.uri(False),
u'%s.next_right' % toponame, provider)
layerNextRight.setExtent(edge_extent)
layerNextRight.loadNamedStyle(
os.path.join(template_dir, 'next_right.qml'))
# Add layers to the layer tree
faceLayers = [layerFaceMbr, layerFaceGeom, layerFaceSeed]
nodeLayers = [layerNode, layerNodeLabel]
edgeLayers = [
layerEdge, layerDirectedEdge, layerEdgeLabel, layerFaceLeft,
layerFaceRight, layerNextLeft, layerNextRight
]
QgsProject.instance().addMapLayers(faceLayers, False)
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)
nodeLayer.setItemVisibilityChecked(False)
nodeLayer.setExpanded(False)
groupNodes = QgsLayerTreeGroup(u'Nodes')
for layer in nodeLayers:
nodeLayer = groupNodes.addLayer(layer)
nodeLayer.setItemVisibilityChecked(False)
nodeLayer.setExpanded(False)
groupEdges = QgsLayerTreeGroup(u'Edges')
for layer in edgeLayers:
nodeLayer = groupEdges.addLayer(layer)
nodeLayer.setItemVisibilityChecked(False)
nodeLayer.setExpanded(False)
supergroup = QgsLayerTreeGroup(u'Topology "%s"' % toponame)
supergroup.insertChildNodes(-1, [groupFaces, groupNodes, groupEdges])
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:
# Set canvas extent to topology extent, if not yet initialized
canvas = iface.mapCanvas()
if (canvas.fullExtent().isNull()):
ext = node_extent
ext.combineExtentWith(edge_extent)
# Grow by 1/20 of largest side
ext = ext.buffered(max(ext.width(), ext.height()) / 20)
canvas.setExtent(ext)
# restore canvas render flag
if not wasFrozen:
iface.mapCanvas().freeze(False)
return True
def run(item, action, mainwindow):
db = item.database()
uri = db.uri()
iface = mainwindow.iface
quoteId = db.connector.quoteId
quoteStr = db.connector.quoteString
# check if the selected item is a topology schema
isTopoSchema = False
if not hasattr(item, 'schema'):
mainwindow.infoBar.pushMessage("Invalid topology", u'Select a topology schema to continue.', QgsMessageBar.INFO,
mainwindow.iface.messageTimeout())
return False
if item.schema() is not None:
sql = u"SELECT srid FROM topology.topology WHERE name = %s" % quoteStr(item.schema().name)
c = db.connector._get_cursor()
db.connector._execute(c, sql)
res = db.connector._fetchone(c)
isTopoSchema = res is not None
if not isTopoSchema:
mainwindow.infoBar.pushMessage("Invalid topology",
u'Schema "{0}" is not registered in topology.topology.'.format(
item.schema().name), QgsMessageBar.WARNING,
mainwindow.iface.messageTimeout())
return False
if (res[0] < 0):
mainwindow.infoBar.pushMessage("WARNING", u'Topology "{0}" is registered as having a srid of {1} in topology.topology, we will assume 0 (for unknown)'.format(item.schema().name, res[0]), QgsMessageBar.WARNING, mainwindow.iface.messageTimeout())
toposrid = '0'
else:
toposrid = str(res[0])
# load layers into the current project
toponame = item.schema().name
template_dir = os.path.join(current_path, 'templates')
# do not refresh the canvas until all the layers are added
wasFrozen = iface.mapCanvas().isFrozen()
iface.mapCanvas().freeze()
try:
provider = db.dbplugin().providerName()
uri = db.uri()
# Force use of estimated metadata (topologies can be big)
uri.setUseEstimatedMetadata(True)
# FACES
# face mbr
uri.setDataSource(toponame, 'face', 'mbr', '', 'face_id')
uri.setSrid(toposrid)
uri.setWkbType(QgsWkbTypes.Polygon)
layerFaceMbr = QgsVectorLayer(uri.uri(False), u'%s.face_mbr' % toponame, provider)
layerFaceMbr.loadNamedStyle(os.path.join(template_dir, 'face_mbr.qml'))
face_extent = layerFaceMbr.extent()
# face geometry
sql = u'SELECT face_id, topology.ST_GetFaceGeometry(%s,' \
'face_id)::geometry(polygon, %s) as geom ' \
'FROM %s.face WHERE face_id > 0' % \
(quoteStr(toponame), toposrid, quoteId(toponame))
uri.setDataSource('', u'(%s\n)' % sql, 'geom', '', 'face_id')
uri.setSrid(toposrid)
uri.setWkbType(QgsWkbTypes.Polygon)
layerFaceGeom = QgsVectorLayer(uri.uri(False), u'%s.face' % toponame, provider)
layerFaceGeom.setExtent(face_extent)
layerFaceGeom.loadNamedStyle(os.path.join(template_dir, 'face.qml'))
# face_seed
sql = u'SELECT face_id, ST_PointOnSurface(' \
'topology.ST_GetFaceGeometry(%s,' \
'face_id))::geometry(point, %s) as geom ' \
'FROM %s.face WHERE face_id > 0' % \
(quoteStr(toponame), toposrid, quoteId(toponame))
uri.setDataSource('', u'(%s)' % sql, 'geom', '', 'face_id')
uri.setSrid(toposrid)
uri.setWkbType(QgsWkbTypes.Point)
layerFaceSeed = QgsVectorLayer(uri.uri(False), u'%s.face_seed' % toponame, provider)
layerFaceSeed.setExtent(face_extent)
layerFaceSeed.loadNamedStyle(os.path.join(template_dir, 'face_seed.qml'))
# TODO: add polygon0, polygon1 and polygon2 ?
# NODES
# node
uri.setDataSource(toponame, 'node', 'geom', '', 'node_id')
uri.setSrid(toposrid)
uri.setWkbType(QgsWkbTypes.Point)
layerNode = QgsVectorLayer(uri.uri(False), u'%s.node' % toponame, provider)
layerNode.loadNamedStyle(os.path.join(template_dir, 'node.qml'))
node_extent = layerNode.extent()
# node labels
uri.setDataSource(toponame, 'node', 'geom', '', 'node_id')
uri.setSrid(toposrid)
uri.setWkbType(QgsWkbTypes.Point)
layerNodeLabel = QgsVectorLayer(uri.uri(False), u'%s.node_id' % toponame, provider)
layerNodeLabel.setExtent(node_extent)
layerNodeLabel.loadNamedStyle(os.path.join(template_dir, 'node_label.qml'))
# EDGES
# edge
uri.setDataSource(toponame, 'edge_data', 'geom', '', 'edge_id')
uri.setSrid(toposrid)
uri.setWkbType(QgsWkbTypes.LineString)
layerEdge = QgsVectorLayer(uri.uri(False), u'%s.edge' % toponame, provider)
edge_extent = layerEdge.extent()
# directed edge
uri.setDataSource(toponame, 'edge_data', 'geom', '', 'edge_id')
uri.setSrid(toposrid)
uri.setWkbType(QgsWkbTypes.LineString)
layerDirectedEdge = QgsVectorLayer(uri.uri(False), u'%s.directed_edge' % toponame, provider)
layerDirectedEdge.setExtent(edge_extent)
layerDirectedEdge.loadNamedStyle(os.path.join(template_dir, 'edge.qml'))
# edge labels
uri.setDataSource(toponame, 'edge_data', 'geom', '', 'edge_id')
uri.setSrid(toposrid)
uri.setWkbType(QgsWkbTypes.LineString)
layerEdgeLabel = QgsVectorLayer(uri.uri(False), u'%s.edge_id' % toponame, provider)
layerEdgeLabel.setExtent(edge_extent)
layerEdgeLabel.loadNamedStyle(os.path.join(template_dir, 'edge_label.qml'))
# face_left
uri.setDataSource(toponame, 'edge_data', 'geom', '', 'edge_id')
uri.setSrid(toposrid)
uri.setWkbType(QgsWkbTypes.LineString)
layerFaceLeft = QgsVectorLayer(uri.uri(False), u'%s.face_left' % toponame, provider)
layerFaceLeft.setExtent(edge_extent)
layerFaceLeft.loadNamedStyle(os.path.join(template_dir, 'face_left.qml'))
# face_right
uri.setDataSource(toponame, 'edge_data', 'geom', '', 'edge_id')
uri.setSrid(toposrid)
uri.setWkbType(QgsWkbTypes.LineString)
layerFaceRight = QgsVectorLayer(uri.uri(False), u'%s.face_right' % toponame, provider)
layerFaceRight.setExtent(edge_extent)
layerFaceRight.loadNamedStyle(os.path.join(template_dir, 'face_right.qml'))
# next_left
uri.setDataSource(toponame, 'edge_data', 'geom', '', 'edge_id')
uri.setSrid(toposrid)
uri.setWkbType(QgsWkbTypes.LineString)
layerNextLeft = QgsVectorLayer(uri.uri(False), u'%s.next_left' % toponame, provider)
layerNextLeft.setExtent(edge_extent)
layerNextLeft.loadNamedStyle(os.path.join(template_dir, 'next_left.qml'))
# next_right
uri.setDataSource(toponame, 'edge_data', 'geom', '', 'edge_id')
uri.setSrid(toposrid)
uri.setWkbType(QgsWkbTypes.LineString)
layerNextRight = QgsVectorLayer(uri.uri(False), u'%s.next_right' % toponame, provider)
layerNextRight.setExtent(edge_extent)
layerNextRight.loadNamedStyle(os.path.join(template_dir, 'next_right.qml'))
# Add layers to the layer tree
faceLayers = [layerFaceMbr, layerFaceGeom, layerFaceSeed]
nodeLayers = [layerNode, layerNodeLabel]
edgeLayers = [layerEdge, layerDirectedEdge, layerEdgeLabel
# , layerEdgeFaceLeft, layerEdgeFaceRight, layerEdgeNextLeft, layerEdgeNextRight
]
QgsProject.instance().addMapLayers(faceLayers, False)
groupFaces = QgsLayerTreeGroup(u'Faces')
for layer in faceLayers:
nodeLayer = groupFaces.addLayer(layer)
nodeLayer.setVisible(Qt.Unchecked)
nodeLayer.setExpanded(False)
groupNodes = QgsLayerTreeGroup(u'Nodes')
for layer in nodeLayers:
nodeLayer = groupNodes.addLayer(layer)
nodeLayer.setVisible(Qt.Unchecked)
nodeLayer.setExpanded(False)
groupEdges = QgsLayerTreeGroup(u'Edges')
for layer in edgeLayers:
nodeLayer = groupEdges.addLayer(layer)
nodeLayer.setVisible(Qt.Unchecked)
nodeLayer.setExpanded(False)
supergroup = QgsLayerTreeGroup(u'Topology "%s"' % toponame)
supergroup.insertChildNodes(-1, [groupFaces, groupNodes, groupEdges])
QgsProject.instance().layerTreeRoot().addChildNode(supergroup)
finally:
# Set canvas extent to topology extent, if not yet initialized
canvas = iface.mapCanvas()
if (canvas.fullExtent().isNull()):
ext = node_extent
ext.combineExtentWith(edge_extent)
# Grow by 1/20 of largest side
ext = ext.buffer(max(ext.width(), ext.height()) / 20)
canvas.setExtent(ext)
# restore canvas render flag
if not wasFrozen:
iface.mapCanvas().freeze(False)
return True
