def __init__(self, iface):
# Save reference to the QGIS interface
self.iface = iface
# initialize plugin directory
self.plugin_dir = os.path.dirname(__file__)
# initialize locale
locale = QSettings().value("locale/userLocale")[0:2]
localePath = os.path.join(self.plugin_dir, 'i18n', 'geneticsimplifier_{}.qm'.format(locale))
if os.path.exists(localePath):
self.translator = QTranslator()
self.translator.load(localePath)
if qVersion() > '4.3.3':
QCoreApplication.installTranslator(self.translator)
# Create the dialog (after translation) and keep reference
self.dlg = GeneticSimplifierDialog()
# Obtaining the map canvas
self.canvas = iface.mapCanvas()
# Obtaining the the vector line layers
self.allLayers = []
self.lineLayers = []
class GeneticSimplifier:
def __init__(self, iface):
# Save reference to the QGIS interface
self.iface = iface
# initialize plugin directory
self.plugin_dir = os.path.dirname(__file__)
# initialize locale
locale = QSettings().value("locale/userLocale")[0:2]
localePath = os.path.join(self.plugin_dir, 'i18n', 'geneticsimplifier_{}.qm'.format(locale))
if os.path.exists(localePath):
self.translator = QTranslator()
self.translator.load(localePath)
if qVersion() > '4.3.3':
QCoreApplication.installTranslator(self.translator)
# Create the dialog (after translation) and keep reference
self.dlg = GeneticSimplifierDialog()
# Obtaining the map canvas
self.canvas = iface.mapCanvas()
# Obtaining the the vector line layers
self.allLayers = []
self.lineLayers = []
def initGui(self):
# Create action that will start plugin configuration
self.action = QAction(
QIcon(":/plugins/geneticsimplifier/geneticSimplify.png"),
u"Genetic Simplifier", self.iface.mainWindow())
# connect the action to the run method
self.action.triggered.connect(self.run)
# Add toolbar button and menu item
self.iface.addToolBarIcon(self.action)
self.iface.addPluginToMenu(u"&Genetic Line Simplifier", self.action)
def unload(self):
# Remove the plugin menu item and icon
self.iface.removePluginMenu(u"&Genetic Line Simplifier", self.action)
self.iface.removeToolBarIcon(self.action)
# run method that performs all the real work
def run(self):
# Adding the line layers into the GUI
self.lineLayers = []
self.allLayers = self.canvas.layers()
for layer in self.allLayers:
if layer.type() == QgsMapLayer.VectorLayer and layer.geometryType() == QGis.Line:
self.lineLayers.append(layer)
self.dlg.insertLineLayers(self.lineLayers)
# show the dialog
self.dlg.show()
# Run the dialog event loop
result = self.dlg.exec_()
# See if OK was pressed
if result == 1:
# Setting the progress bar
self.progressMessageBar = self.iface.messageBar().createMessage("Simplifying layer "+ self.dlg.currentLayer.name() + " to new layer " + self.dlg.ui.outputEdit.text() + "...")
self.progressBar = QProgressBar()
self.progressBar.setAlignment(Qt.AlignLeft|Qt.AlignVCenter)
self.progressMessageBar.layout().addWidget(self.progressBar)
self.iface.messageBar().pushWidget(self.progressMessageBar, self.iface.messageBar().INFO)
self.geneticThread = genetic_simplifier.GeneticSimplifier(self.dlg.ui.popSpin.value(), self.dlg.ui.spinBox.value(), self.dlg.currentLayer, self.dlg.ui.mateCombo.currentIndex(), self.dlg.ui.geneSpin.value(), self.dlg.ui.evolutionGroup.isChecked(), self.dlg.ui.crossSpin.value()/100, self.dlg.ui.mutationSpin.value()/100, self.dlg.ui.genSpin.value(), self.dlg.ui.outputEdit.text(), self.dlg.ui.useLocalSearchBox.isChecked())
QObject.connect( self.geneticThread, SIGNAL( "rangeCalculated( PyQt_PyObject )" ), self.setProgressRange )
QObject.connect( self.geneticThread, SIGNAL( "featureProcessed()" ), self.featureProcessed )
QObject.connect( self.geneticThread, SIGNAL( "processingFinished( PyQt_PyObject )" ), self.processFinished )
QObject.connect( self.geneticThread, SIGNAL( "layerCreated( PyQt_PyObject )" ), self.layerCreated )
# Startin the processing
self.geneticThread.start()
def setProgressRange( self, maximum ):
self.progressBar.setRange( 0, maximum )
def featureProcessed( self ):
self.progressBar.setValue( self.progressBar.value() + 1 )
def processFinished( self, pointsCount ):
if self.geneticThread != None:
self.geneticThread.stop()
self.geneticThread = None
QMessageBox.information(self.iface.mainWindow(), "Simplify results","There were %d vertices in original dataset which\nwere reduced to %d vertices after simplification" % ( pointsCount[ 0 ], pointsCount[ 1 ] ) )
def layerCreated(self, outLayer):
QgsMapLayerRegistry.instance().addMapLayers([outLayer])