Python QProgressBar.setValue方法代码示例

# 需要导入模块: from qgis.PyQt.QtWidgets import QProgressBar [as 别名]
# 或者: from qgis.PyQt.QtWidgets.QProgressBar import setValue [as 别名]
class ProgressBarLogger(QDialog):
    """A simple dialog with a progress bar and a label"""
    def __init__(self, title = None):
        QDialog.__init__(self, None)
        if title is not None:
            self.setWindowTitle(title)
        self.__label = QLabel(self)
        self.__layout = QVBoxLayout()
        self.__layout.addWidget(self.__label)
        self.__progress = QProgressBar(self)
        self.__layout.addWidget(self.__progress)
        self.setLayout(self.__layout)
        self.resize(600, 70)
        self.setFixedSize(600, 70)
        self.__progress.hide()
        self.show()

    def set_text(self, t):
        """Gets called when a text is to be logged"""
        if isinstance(t, tuple):
            lvl, msg = t
        else:
            msg = t
        self.__label.setText(msg)
        QCoreApplication.processEvents()

    def set_progress(self, i, n):
        """Gets called when there is a progression"""
        self.__progress.show()
        self.__progress.setMinimum(0)
        self.__progress.setMaximum(n)
        self.__progress.setValue(i)
        QCoreApplication.processEvents()

# 需要导入模块: from qgis.PyQt.QtWidgets import QProgressBar [as 别名]
# 或者: from qgis.PyQt.QtWidgets.QProgressBar import setValue [as 别名]
class ProgressDialog(QDialog):
    """ Progress dialog shows progress bar for algorithm.
    """
    
    def __init__(self, iface):
        QDialog.__init__(self, iface.mainWindow())
        
        self.workerThread = None
        self.state = False
        self.outputLoc = None
        self.resultStatus = None
        self.reRun = False
        self.savedProj = None
        
        # Build GUI Elements
        self.setWindowTitle("SEILAPLAN wird ausgeführt")
        self.resize(500, 100)
        self.container = QVBoxLayout()
        self.progressBar = QProgressBar(self)
        self.progressBar.setMinimumWidth(500)
        self.statusLabel = QLabel(self)
        self.hbox = QHBoxLayout()
        self.cancelButton = QDialogButtonBox()
        self.closeButton = QDialogButtonBox()
        self.resultLabel = ClickLabel(self)
        self.resultLabel.setMaximumWidth(500)
        self.resultLabel.setSizePolicy(
            QSizePolicy(QSizePolicy.Fixed, QSizePolicy.Expanding))
        self.resultLabel.setWordWrap(True)
        self.rerunButton = QPushButton("Berechnungen wiederholen")
        self.rerunButton.setVisible(False)
        spacer = QSpacerItem(40, 20, QSizePolicy.Expanding,
                             QSizePolicy.Minimum)
        self.cancelButton.setStandardButtons(QDialogButtonBox.Cancel)
        self.cancelButton.clicked.connect(self.onAbort)
        self.closeButton.setStandardButtons(QDialogButtonBox.Close)
        self.closeButton.clicked.connect(self.onClose)
        self.hbox.addWidget(self.rerunButton)
        self.hbox.addItem(spacer)
        self.hbox.addWidget(self.cancelButton)
        self.hbox.setAlignment(self.cancelButton, Qt.AlignHCenter)
        self.hbox.addWidget(self.closeButton)
        self.hbox.setAlignment(self.closeButton, Qt.AlignHCenter)
        self.closeButton.hide()
        
        self.container.addWidget(self.progressBar)
        self.container.addWidget(self.statusLabel)
        self.container.addWidget(self.resultLabel)
        self.container.addLayout(self.hbox)
        self.container.setSizeConstraint(QLayout.SetFixedSize)
        self.setLayout(self.container)
        
    def setThread(self, workerThread):
        self.workerThread = workerThread
        self.connectProgressSignals()
    
    def connectProgressSignals(self):
        # Connet signals of thread
        self.workerThread.sig_jobEnded.connect(self.jobEnded)
        self.workerThread.sig_jobError.connect(self.onError)
        self.workerThread.sig_value.connect(self.valueFromThread)
        self.workerThread.sig_range.connect(self.rangeFromThread)
        self.workerThread.sig_text.connect(self.textFromThread)
        self.workerThread.sig_result.connect(self.resultFromThread)
        self.rerunButton.clicked.connect(self.onRerun)
        
    def run(self):
        # Show modal dialog window (QGIS is still responsive)
        self.show()
        # start event loop
        self.exec_()
    
    def jobEnded(self, success):
        self.setWindowTitle("SEILAPLAN")
        if success:
            self.statusLabel.setText("Berechnungen abgeschlossen.")
            self.progressBar.setValue(self.progressBar.maximum())
            self.setFinalMessage()
        
        else:  # If there was an abort by the user
            self.statusLabel.setText("Berechnungen abgebrochen.")
            self.progressBar.setValue(self.progressBar.minimum())
        self.finallyDo()
        self.rerunButton.setVisible(True)
    
    def valueFromThread(self, value):
        self.progressBar.setValue(value)
    
    def rangeFromThread(self, range_vals):
        self.progressBar.setRange(range_vals[0], range_vals[1])
    
    def maxFromThread(self, max):
        self.progressBar.setValue(self.progressBar.maximum())
    
    def textFromThread(self, value):
        self.statusLabel.setText(value)
    
    def resultFromThread(self, result):
        [self.outputLoc, self.resultStatus] = result
    
#.........这里部分代码省略.........

# 需要导入模块: from qgis.PyQt.QtWidgets import QProgressBar [as 别名]
# 或者: from qgis.PyQt.QtWidgets.QProgressBar import setValue [as 别名]
    def run(self):
        """Run method that performs all the real work"""
        
        layers = self.iface.mapCanvas().layers()
        layer_list = []
        self.dlg.layerComboBox.clear()
        for layer in layers:
            layer_list.append(layer.name())
        self.dlg.layerComboBox.addItems(layer_list)
        # TODO: Make the active layer the selected item in combo box  aLayer = qgis.utils.iface.activeLayer()
        
        # TODO: Add signal to update toleranceSpinBox.suffix (Degrees) from layerComboBox.crs.mapUnits when layer is selected:
        #my_UnitType = { 0: 'Meters', 1: 'Feet', 2: 'Degrees', 7: 'NauticalMiles', 8: 'Kilometers', 9: 'Yards', 10: 'Miles', 3: 'UnknownUnit'}
        #suffix = my_UnitType[aLayer.crs().mapUnits()]
        
        # show the dialog
        self.dlg.show()
        # Run the dialog event loop
        result = self.dlg.exec_()
        # See if OK was pressed
        if result:
            if self.checkNetworkXModule() < 0:
                return -4
            import networkx as nx
            
            layerName = self.dlg.layerComboBox.currentText()
            try:
                aLayer = QgsProject.instance().mapLayersByName(layerName)[0]
            except:
                self.iface.messageBar().pushMessage("Error", "Failed to load layer!", level=Qgis.Critical)
                return -1

            try:

                previousEditingMode = True
                if not aLayer.isEditable():
                    aLayer.startEditing()
                    #self.iface.messageBar().pushMessage("Info", "Layer " + aLayer.name() + " needs to be in edit mode", level=Qgis.Info)
                    #self.iface.messageBar().pushMessage("Error", "Layer " + aLayer.name() + " needs to be in edit mode", level=Qgis.Critical)
                    #return -2
                    previousEditingMode = False
                     
                attrIdx = self.getAttributeIndex(aLayer)
                if attrIdx < 0:
                    return -3  

                progressMessageBar = self.iface.messageBar().createMessage("Creating network graph...")
                progress = QProgressBar()
                progress.setMaximum(aLayer.featureCount())
                progress.setAlignment(Qt.AlignLeft|Qt.AlignVCenter)
                progressMessageBar.layout().addWidget(progress)
                self.iface.messageBar().pushWidget(progressMessageBar, Qgis.Info)          
                
                G = nx.Graph()

                aLayer.beginEditCommand("Clear group attribute, create graph")
                # construct undirected graph
                tolerance = self.dlg.toleranceSpinBox.value()
                if tolerance == 0:
                    tolerance = 0.000001
                count = 0
                for feat in aLayer.getFeatures():
                    count += 1
                    progress.setValue(count)
                    done = aLayer.changeAttributeValue(feat.id(), attrIdx, -1)
                    geom = feat.geometry()
                    QgsGeometry.convertToSingleType(geom)       # QGIS 3.x seems to load single LineString as MultiLineString??
                    line = geom.asPolyline()
                    
                    for i in range(len(line)-1):
                        G.add_edges_from([((int(line[i][0]/tolerance), int(line[i][1]/tolerance)), (int(line[i+1][0]/tolerance), int(line[i+1][1]/tolerance)), 
                                          {'fid': feat.id()})])     # first scale by tolerance, then convert to int.  Before doing this, there were problems (in NetworkX v1) with floats not equating, thus creating disconnects that weren't there.
                    if count % 100 == 0:
                        QApplication.processEvents()      # keep the UI responsive, every 100 features
                        #TODO: check to see if Esc pressed

                aLayer.endEditCommand()
                
                self.iface.messageBar().pushMessage("Finding connected subgraphs, please wait...",  level=Qgis.Warning)     # WARNING - to highlight the next stage, where we cannot show progress
                QApplication.processEvents()
                connected_components = list(nx.connected_component_subgraphs(G))    # this takes a long time.  TODO: how to show progress?
                self.iface.messageBar().pushMessage("Updating group attribute...",  level=Qgis.Info)
                QApplication.processEvents()
                          
                # gather edges and components to which they belong
                fid_comp = {}
                for i, graph in enumerate(connected_components):
                   for edge in graph.edges(data=True):
                       fid_comp[edge[2].get('fid', None)] = i
                
                # write output to csv file
                #with open('C:/Tmp/Components.csv', 'wb') as f:
                #    w = csv.DictWriter(f, fieldnames=['fid', 'group'])
                #    w.writeheader()
                #    for (fid, group) in fid_comp.items():
                #        w.writerow({'fid': fid, 'group': group})
                
                aLayer.beginEditCommand("Update group attribute")
                for (fid, group) in fid_comp.items():
                    done = aLayer.changeAttributeValue(fid, attrIdx, group)
#.........这里部分代码省略.........

# 需要导入模块: from qgis.PyQt.QtWidgets import QProgressBar [as 别名]
# 或者: from qgis.PyQt.QtWidgets.QProgressBar import setValue [as 别名]

#.........这里部分代码省略.........
        # #widgets-and-dialogs-with-auto-connect
        self.setupUi(self)

        self.iface = iface

        self.setCoordinates(startX, startY, endX, endY)

        self.threadpool = QThreadPool()

        self.size = 0

    def setCoordinates(self, startX, startY, endX, endY):
        if startX < endX:
            minLong = startX
            maxLong = endX
        else:
            minLong = endX
            maxLong = startX

        if startY < endY:
            minLat = startY
            maxLat = endY
        else:
            minLat = endY
            maxLat = startY

        self.wEdit.setText(str(minLong))
        self.sEdit.setText(str(minLat))
        self.eEdit.setText(str(maxLong))
        self.nEdit.setText(str(maxLat))

    @pyqtSlot()
    def on_saveButton_clicked(self):
        ret = QFileDialog.getSaveFileName(parent=None, caption='Define file name and location', filter='OSM Files(*.osm)')
        fileName = ret[0]

        split = fileName.split('.')
        if len(split)>0 and split[-1] == 'osm':
            pass
        else:
            fileName += '.osm'

        self.filenameEdit.setText(fileName)

    @pyqtSlot()
    def on_button_box_accepted(self):
        if self.filenameEdit.text() == '':
            QMessageBox.warning(self, self.tr("Warning!"), self.tr("Please, select a location to save the file."))
            return

        # Initiating processing
        osmRequest = OSMRequest(self.filenameEdit.text())
        osmRequest.setParameters(self.wEdit.text(), self.sEdit.text(), self.eEdit.text(), self.nEdit.text())
        # Connecting end signal
        osmRequest.signals.processFinished.connect(self.processFinished)
        osmRequest.signals.sizeReported.connect(self.reportSize)
        osmRequest.signals.proxyOpened.connect(self.proxy)
        osmRequest.signals.errorOccurred.connect(self.errorOccurred)
        osmRequest.signals.userCanceled.connect(self.userCanceled)
        # Setting the progress bar
        self.progressMessageBar = self.iface.messageBar().createMessage('Downloading data...')
        self.progressBar = QProgressBar()
        self.progressBar.setAlignment(Qt.AlignLeft|Qt.AlignVCenter)
        self.progressMessageBar.layout().addWidget(self.progressBar)
        self.iface.messageBar().pushWidget(self.progressMessageBar, Qgis.Info)
        self.progressBar.setRange(0, 0)
        self.progressMessageBar.destroyed.connect(osmRequest.signals.cancel)
        # Starting process
        self.threadpool.start(osmRequest)

    @pyqtSlot(str)
    def proxy(self, proxy):
        self.progressMessageBar.setText('Proxy set to: '+proxy)

    @pyqtSlot(str)
    def errorOccurred(self, message):
        QMessageBox.warning(self, 'Fatal!', message)
        self.close()

    @pyqtSlot()
    def userCanceled(self):
        QMessageBox.warning(self, 'Info!', 'Process canceled by user!')
        self.close()

    @pyqtSlot(float)
    def reportSize(self, size):
        self.size = size
        self.progressMessageBar.setText('Downloading: '+"{0:.2f}".format(size)+' megabytes from OSM servers...')

    @pyqtSlot(str)
    def processFinished(self, message):
        self.progressBar.setRange(0, 100)
        self.progressBar.setValue(100)
        self.progressMessageBar.setText('Downloaded '+"{0:.2f}".format(self.size)+' megabytes in total from OSM servers')
        QMessageBox.warning(self, 'Info!', message)

        if self.checkBox.isChecked():
            self.iface.addVectorLayer(self.filenameEdit.text(), 'osm_data', 'ogr')

        self.close()