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- # -*- coding: utf-8 -*-
- """
- dtexchangegeometry
- `````````````
- """
- """
- Part of DigitizingTools, a QGIS plugin that
- subsumes different tools neded during digitizing sessions
- Tool: Exchange the geometry between two features
- * begin : 2015-12-09
- * copyright : (C) 2015 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 DtSingleButton
- class DtExchangeGeometry(DtSingleButton):
- def __init__(self, iface, toolBar):
- super().__init__(iface, toolBar,
- QtGui.QIcon(":/exchangeGeometry.png"),
- QtCore.QCoreApplication.translate("digitizingtools",
- "Exchange attributes between selected features"),
- geometryTypes = [1, 2, 3, 4, 5, 6], dtName = "dtExchangeGeometry")
- self.enable()
- def process(self):
- layer = self.iface.mapCanvas().currentLayer()
- feats = layer.selectedFeatures()
- feature1 = feats[0]
- geom1 = QgsGeometry(feature1.geometry())
- feature2 = feats[1]
- geom2 = QgsGeometry(feature2.geometry())
- layer.beginEditCommand(QtCore.QCoreApplication.translate(
- "editcommand", "Exchange attributes"))
- feature1.setGeometry(geom2)
- layer.updateFeature(feature1)
- feature2.setGeometry(geom1)
- layer.updateFeature(feature2)
- layer.endEditCommand()
- self.canvas.refresh()
- def enable(self):
- '''Enables/disables the corresponding button.'''
- DtSingleButton.enable(self) # call parent's method
- if self.act.isEnabled():
- layer = self.iface.activeLayer()
- try:
- layer.selectionChanged.disconnect(self.enable) # disconnect, will be reconnected
- except:
- pass
- doEnable = layer.selectedFeatureCount() == 2
- self.act.setEnabled(doEnable)
- layer.selectionChanged.connect(self.enable)
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