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- # -*- coding: utf-8 -*-
- """
- dtextractpart
- `````````````
- """
- """
- Part of DigitizingTools, a QGIS plugin that
- subsumes different tools neded during digitizing sessions
- Tool: Extract an part of a multifart feature and add it as new feature
- * begin : 2014-07-09
- * copyright : (C) 2014 by Bernhard Ströbl
- * email : bernhard.stroebl@jena.de
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- """
- from qgis.PyQt import QtCore, QtGui
- from qgis.core import *
- import dtutils
- import dt_icons_rc
- from dttools import DtSingleTool, DtSelectPartTool
- class DtExtractPartTool(DtSingleTool):
- def __init__(self, iface, toolBar):
- super().__init__(iface, toolBar,
- QtGui.QIcon(":/ExtractPart.png"),
- QtCore.QCoreApplication.translate("digitizingtools",
- "Split off one part and add it as a new feature"),
- geometryTypes = [1, 2, 3, 4, 5, 6], dtName = "dtExtractPart")
- self.tool = DtSelectPartTool(self.iface)
- self.tool.partSelected.connect(self.partSelected)
- self.enable()
- def process(self):
- self.canvas.setMapTool(self.tool)
- self.act.setChecked(True)
- def partSelected(self, part):
- fid = part[0]
- partNumber = part[1]
- aPart = part[2]
- layer = self.iface.mapCanvas().currentLayer()
- feature = dtutils.dtGetFeatureForId(layer, fid)
- geom = QgsGeometry(feature.geometry())
- if geom.deletePart(partNumber):
- layer.beginEditCommand(QtCore.QCoreApplication.translate("editcommand", "Extract part"))
- aFeat = dtutils.dtCopyFeature(layer, feature)
- aFeat.setGeometry(aPart)
- layer.addFeature(aFeat)
- feature.setGeometry(geom)
- layer.updateFeature(feature)
- layer.endEditCommand()
- self.canvas.refresh()
- self.tool.reset()
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