def __init__(self, iface: QgisInterface, layer):
QgepMapToolAddFeature.__init__(self, iface, layer)
self.snapping_marker = None
self.node_layer = QgepLayerManager.layer('vw_wastewater_node')
assert self.node_layer is not None
self.reach_layer = QgepLayerManager.layer('vw_qgep_reach')
assert self.reach_layer is not None
self.setAdvancedDigitizingAllowed(True)
self.setAutoSnapEnabled(True)
layer_snapping_configs = [{
'layer': self.node_layer,
'mode': QgsSnappingConfig.Vertex
}, {
'layer': self.reach_layer,
'mode': QgsSnappingConfig.VertexAndSegment
}]
self.snapping_configs = []
self.snapping_utils = QgsMapCanvasSnappingUtils(self.iface.mapCanvas())
for lsc in layer_snapping_configs:
config = QgsSnappingConfig()
config.setMode(QgsSnappingConfig.AdvancedConfiguration)
config.setEnabled(True)
settings = QgsSnappingConfig.IndividualLayerSettings(
True, lsc['mode'], 10, QgsTolerance.Pixels)
config.setIndividualLayerSettings(lsc['layer'], settings)
self.snapping_configs.append(config)
def activate(self):
cursor = QCursor()
cursor.setShape(Qt.ArrowCursor)
self.iface.mapCanvas().setCursor(cursor)
myLayers = []
# Editing
layers = self.getLayers()
for layer in layers:
openedLayerPath = self.getLayerPath(layer)
for name in self.ownMainLayers:
layerPath = self.generatePath(self.ProjectDirectory, self.NetworkName + "_" + name + ".shp")
if openedLayerPath == layerPath:
myLayers.append(layer)
if not layer.isEditable():
layer.startEditing()
# Snapping
self.snapper = QgsMapCanvasSnappingUtils(self.iface.mapCanvas())
self.snapper.setMapSettings(self.iface.mapCanvas().mapSettings())
config = QgsSnappingConfig(QgsProject.instance())
config.setType(2) # Vertex
config.setMode(2) # All layers
config.setTolerance(1)
config.setUnits(2) # Pixels
config.setEnabled(True)
self.snapper.setConfig(config)
def configSnapper(self, type):
# Snapping
self.snapper = QgsMapCanvasSnappingUtils(self.iface.mapCanvas())
self.snapper.setMapSettings(self.iface.mapCanvas().mapSettings())
config = QgsSnappingConfig(QgsProject.instance())
config.setType(type) # 1: Vertex; 2:Segment
config.setMode(2) # All layers
config.setTolerance(10)
config.setUnits(1) # Pixels
config.setEnabled(True)
self.snapper.setConfig(config)
def activate(self):
QgsMapTool.activate(self)
# Snapping
self.snapper = QgsMapCanvasSnappingUtils(self.iface.mapCanvas())
self.snapper.setMapSettings(self.iface.mapCanvas().mapSettings())
config = QgsSnappingConfig(QgsProject.instance())
config.setType(1) # Vertex
config.setMode(2) # All layers
config.setTolerance(2)
config.setUnits(2) # Pixels
config.setEnabled(True)
self.snapper.setConfig(config)
def init_snapper(self):
"""
Initialize snapper
"""
if not self.snapper:
self.node_layer = self.network_analyzer.getNodeLayer()
self.snapper = QgsMapCanvasSnappingUtils(self.canvas)
config = QgsSnappingConfig()
config.setMode(QgsSnappingConfig.AdvancedConfiguration)
config.setEnabled(True)
ils = QgsSnappingConfig.IndividualLayerSettings(True, QgsSnappingConfig.VertexAndSegment,
16, QgsTolerance.Pixels)
config.setIndividualLayerSettings(self.node_layer, ils)
self.snapper.setConfig(config)
from qgis.core import QgsSnappingUtils
from qgis.gui import QgsMapCanvasSnappingUtils
from qgis.utils import iface
canvas = iface.mapCanvas()
snapping_utils = QgsSnappingUtils()
print(snapping_utils.snapToMapMode())
# Change the mode through the GUI
print(snapping_utils.snapToMapMode())
# Retrieve information from the project
snapping_utils.readConfigFromProject()
# Alternate way to above code
snapping_utils = canvas.snappingUtils() # TODO: cast QgsMapCanvasSnappingUtils
snapping_utils.defaultSettings()
# Find the mode in a readable way
print([
i for i in ['SnapCurrentLayer', 'SnapAdvanced', 'SnapAllLayers']
if snapping_utils.snapToMapMode() == getattr(QgsSnappingUtils, i)
][0])
print(snapping_utils.layers())
print(snapping_utils.defaultSettings()
) # where values are type, tolerance and unit
map_canvas_snapping_utils = QgsMapCanvasSnappingUtils(canvas)
canvas.setSnappingUtils(map_canvas_snapping_utils)
