class MainWindow(QMainWindow, Ui_MainWindow): def __init__(self): super(MainWindow, self).__init__() self.setupUi(self) self.first_flag = True self.setWindowTitle('PyQGIS') # 调整窗口大小 self.resize(800, 600) # 初始化图层树 vl = QVBoxLayout(self.dockWidgetContents) self.layerTreeView = QgsLayerTreeView(self) vl.addWidget(self.layerTreeView) # 初始化地图画布 self.mapCanvas = QgsMapCanvas(self) hl = QHBoxLayout(self.frame) hl.setContentsMargins(0, 0, 0, 0) hl.addWidget(self.mapCanvas) # 建立桥梁 self.model = QgsLayerTreeModel(PROJECT.layerTreeRoot(), self) self.model.setFlag(QgsLayerTreeModel.AllowNodeRename) self.model.setFlag(QgsLayerTreeModel.AllowNodeReorder) self.model.setFlag(QgsLayerTreeModel.AllowNodeChangeVisibility) self.model.setFlag(QgsLayerTreeModel.ShowLegendAsTree) self.model.setAutoCollapseLegendNodes(10) self.layerTreeView.setModel(self.model) self.layerTreeBridge = QgsLayerTreeMapCanvasBridge( PROJECT.layerTreeRoot(), self.mapCanvas, self) # 显示经纬度 self.mapCanvas.xyCoordinates.connect(self.showLngLat) # 打开工程 self.actionOpen.triggered.connect(self.actionOpenTriggered) # 退出程序 self.actionQuit.triggered.connect(self.close) # 地图工具 # TODO:放大、缩小没有图标 self.actionPanTriggered() self.actionPan.triggered.connect(self.actionPanTriggered) self.actionZoomin.triggered.connect(self.actionZoomInTriggered) self.actionZoomout.triggered.connect(self.actionZoomOutTriggered) self.actionIdentity.triggered.connect(self.actionIdentifyTriggered) # 图层 self.actionShapefile.triggered.connect(self.actionShapefileTriggered) self.actionCsv.triggered.connect(self.actionCsvTriggered) self.actionPostGIS.triggered.connect(self.actionPostGISTriggered) self.actionWFS.triggered.connect(self.actionWFSTriggered) self.actionGeotiff.triggered.connect(self.actionGeotiffTriggered) self.actionXYZ.triggered.connect(self.actionXYZTriggered) # 绘图工具 self.actionPoint.triggered.connect(self.actionPointTriggered) self.actionLine.triggered.connect(self.actionLineTriggered) self.actionRectangle.triggered.connect(self.actionRectangleTriggered) self.actionPolygon.triggered.connect(self.actionPolygonTriggered) # 关于Qt self.actionAboutQt.triggered.connect( lambda: QMessageBox.aboutQt(self, '关于Qt')) self.actionAbout.triggered.connect( lambda: QMessageBox.about(self, '关于', 'PyQGIS二次开发')) # self.actionPan.triggered.connect(self.actionPanTriggered) # self.actionIdentify.triggered.connect(self.actionIdentifyTriggered) # 图层右键菜单 self.customMenuProvider = CustomMenuProvider(self.layerTreeView, self.mapCanvas) self.layerTreeView.setMenuProvider(self.customMenuProvider) # self.layerTreeRegistryBridge = QgsLayerTreeRegistryBridge(PROJECT.layerTreeRoot(), PROJECT, self) def actionOpenTriggered(self): """打开工程""" data_file, ext = QFileDialog.getOpenFileName(self, '打开', '', '工程文件(*.qgs , *.qgz)') if data_file: PROJECT.read(data_file) def actionPanTriggered(self): self.mapTool = QgsMapToolPan(self.mapCanvas) self.mapCanvas.setMapTool(self.mapTool) def actionZoomInTriggered(self): self.mapTool = QgsMapToolZoom(self.mapCanvas, False) self.mapCanvas.setMapTool(self.mapTool) def actionZoomOutTriggered(self): self.mapTool = QgsMapToolZoom(self.mapCanvas, True) self.mapCanvas.setMapTool(self.mapTool) def actionIdentifyTriggered(self): # 设置识别工具 self.identifyTool = QgsMapToolIdentifyFeature(self.mapCanvas) self.identifyTool.featureIdentified.connect(self.showFeatures) self.mapCanvas.setMapTool(self.identifyTool) # 设置需要识别的图层 layers = self.mapCanvas.layers() if layers: # 识别画布中第一个图层 self.identifyTool.setLayer(layers[0]) def showFeatures(self, feature): print(type(feature)) QMessageBox.information(self, '信息', ''.join(feature.attributes())) def actionAddGroupTriggered(self): PROJECT.layerTreeRoot().addGroup('group1') def actionShapefileTriggered(self): """打开shp""" data_file, ext = QFileDialog.getOpenFileName(self, '打开', '', '*.shp') if data_file: layer = QgsVectorLayer( data_file, os.path.splitext(os.path.basename(data_file))[0], "ogr") self.addLayer(layer) def actionCsvTriggered(self): """加载csv数据""" data_file, ext = QFileDialog.getOpenFileName(self, '打开', '', '*.csv') if data_file: # 去掉盘符,否则图层无效 data_file = os.path.splitdrive(data_file)[1] uri = f"file://{data_file}?delimiter=,&xField=x&yField=y" print(uri) layer = QgsVectorLayer(uri, "point", "delimitedtext") self.addLayer(layer) def actionPostGISTriggered(self): """加载postgis图层""" dialog = PostGISDialog(self) if dialog.exec_(): uri = QgsDataSourceUri() uri.setConnection(dialog.lineEditHost.text(), dialog.lineEditPort.text(), dialog.lineEditDatabase.text(), dialog.lineEditUsername.text(), dialog.lineEditPassword.text()) # lineEditGeometryColumn:根据实际情况,可能为:wkb_geometry、geometry、the_geom... uri.setDataSource("public", dialog.lineEditLayer.text(), dialog.lineEditGeometryColumn.text()) layer = QgsVectorLayer(uri.uri(False), dialog.lineEditLayer.text(), "postgres") self.addLayer(layer) def actionWFSTriggered(self): """加载天地图WFS图层""" uri = 'http://gisserver.tianditu.gov.cn/TDTService/wfs?' \ 'srsname=EPSG:4326&typename=TDTService:RESA&version=auto&request=GetFeature&service=WFS' layer = QgsVectorLayer(uri, "RESA", "WFS") self.addLayer(layer) def actionGeotiffTriggered(self): """加载geotiff""" data_file, ext = QFileDialog.getOpenFileName(self, '打开', '', '*.tif') if data_file: layer = QgsRasterLayer(data_file, os.path.basename(data_file)) self.addLayer(layer) def actionXYZTriggered(self): uri = 'type=xyz&' \ 'url=https://www.google.cn/maps/vt?lyrs=s@804%26gl=cn%26x={x}%26y={y}%26z={z}&' \ 'zmax=19&' \ 'zmin=0&' \ 'crs=EPSG3857' layer = QgsRasterLayer(uri, 'google', 'wms') self.addLayer(layer) def addLayer(self, layer): if layer.isValid(): if self.first_flag: self.mapCanvas.setDestinationCrs(layer.crs()) self.mapCanvas.setExtent(layer.extent()) self.first_flag = False PROJECT.addMapLayer(layer) layers = [layer ] + [PROJECT.mapLayer(i) for i in PROJECT.mapLayers()] self.mapCanvas.setLayers(layers) self.mapCanvas.refresh() else: print('图层无效.') def actionPointTriggered(self): self.pointTool = PointMapTool(self.mapCanvas) self.mapCanvas.setMapTool(self.pointTool) def actionLineTriggered(self): self.lineTool = LineMapTool(self.mapCanvas) self.mapCanvas.setMapTool(self.lineTool) def actionRectangleTriggered(self): self.rectangleTool = RectangleMapTool(self.mapCanvas) self.mapCanvas.setMapTool(self.rectangleTool) def actionPolygonTriggered(self): self.polygonTool = PolygonMapTool(self.mapCanvas) self.mapCanvas.setMapTool(self.polygonTool) def showLngLat(self, point): x = point.x() y = point.y() self.statusbar.showMessage(f'经度:{x}, 纬度:{y}')
class MapExplorer(QMainWindow, Ui_MainWindow): def __init__(self): super(MapExplorer, self).__init__() self.project = QgsProject() self.band_synthesis_window = Band_Synthesis_Component() self.kmeans_window = KMeans_Component() self.meanshift_window = MeanShift_Component() self.dbscan_window = DBScan_Component() self.setupUi(self) self.init_mapcanvas() self.slot_connect() self.init_layerTree() self.style_stand() def init_layerTree(self): self.layer_tree_view = QgsLayerTreeView(self) layout = QVBoxLayout(self.layerTreeWidget) layout.setContentsMargins(0, 0, 0, 0) layout.addWidget(self.layer_tree_view) model = QgsLayerTreeModel(QgsProject.instance().layerTreeRoot(), self) model.setFlag(QgsLayerTreeModel.AllowNodeRename) model.setFlag(QgsLayerTreeModel.AllowNodeReorder) model.setFlag(QgsLayerTreeModel.AllowNodeChangeVisibility) model.setFlag(QgsLayerTreeModel.ShowLegendAsTree) model.setAutoCollapseLegendNodes(10) self.layer_tree_view.setModel(model) provider = MenuProvider(self.layer_tree_view, self.mapCanvas, self.project.instance()) self.layer_tree_view.setMenuProvider(provider) # 注意self.layer_tree_bridge必须有 self.layer_tree_bridge = QgsLayerTreeMapCanvasBridge( self.project.instance().layerTreeRoot(), self.mapCanvas) def slot_connect(self): self.actionopen_file.triggered.connect(self.action_open_triggered) self.actionzoom_in.triggered.connect(self.action_zoomin_triggered) self.actionzoom_out.triggered.connect(self.action_zoomout_triggered) self.actionpan.triggered.connect(self.action_pan_triggered) self.actionfull_extent.triggered.connect( self.action_fullextent_triggered) self.action_select.triggered.connect(self.action_select_triggered) self.actionsave.triggered.connect(self.action_save_triggered) self.mapdecoration.triggered.connect(self.mapDecoration_show) self.actionAqua.triggered.connect(self.style_Aqua) self.actionstand.triggered.connect(self.style_stand) self.actionConsoleStule.triggered.connect(self.style_ConsoleStyle) self.actionElegantDark.triggered.connect(self.style_ElegantDark) self.actionManjaroMix.triggered.connect(self.style_ManjaroMix) self.actionMaterialDark.triggered.connect(self.style_MaterialDark) self.actionUbuntu.triggered.connect(self.style_Ubuntu) self.action_KMeans.triggered.connect(self.action_KMeans_triggered) self.action_DBScan.triggered.connect(self.action_DBScan_triggered) self.action_MeanShift.triggered.connect( self.action_Meanshift_triggered) self.action_band_synthesis.triggered.connect( self.action_band_synthesis_triggered) self.kmeans_window.add_layer_signal.connect( self.action_add_kmeans_result) self.dbscan_window.add_layer_signal.connect( self.action_add_dbscan_result) self.meanshift_window.add_layer_signal.connect( self.action_add_meanshift_result) self.band_synthesis_window.add_layer_signal.connect( self.action_add_band_synthesis_result) def init_mapcanvas(self): # 实例化地图画布 self.mapCanvas = QgsMapCanvas() self.mapCanvas.xyCoordinates.connect(self.show_lonlat) self.mapCanvas.setCanvasColor(QColor(60, 63, 65, 100)) # self.mapCanvas.show() layout = QVBoxLayout(self.mapWidget) layout.setContentsMargins(0, 0, 0, 0) layout.addWidget(self.mapCanvas) def loadMap(self, fullpath, classArray=None): print(fullpath[-3:-1] + fullpath[-1]) imgClass = fullpath[-3:-1] + fullpath[-1] basename = os.path.splitext(os.path.basename(fullpath))[0] if imgClass == 'shp': self.layer = QgsVectorLayer(fullpath, basename, "ogr") else: self.layer = QgsRasterLayer(fullpath, basename) # 添加图例 if classArray: self.node = QgsLayerTreeLayer(self.layer) # self.classArray = [{'name':'class1','color':QColor(0,0,0)},{'name':'class1','color':QColor(0,255,0)}] self.legend = CustomViewerLegend(classArray) self.legend.createLayerTreeModelLegendNodes(self.node) self.layer.setLegend(self.legend) # 注册图层 self.project.instance().addMapLayer(self.layer) self.mapCanvas.setLayers([self.layer]) # 设置图层范围 self.mapCanvas.setExtent(self.layer.extent()) self.mapCanvas.refresh() self.layer_tree_view.setCurrentLayer(self.layer) def action_open_triggered(self): fullpath, format = QFileDialog.getOpenFileName( self, '打开数据', '', '*.shp;;*.jpg;;*.png;;*.tif') if os.path.exists(fullpath): self.loadMap(fullpath) def action_save_triggered(self): fullpath, format = QFileDialog.getSaveFileName(self, '保存数据', '', '*.tif') if os.path.exists(fullpath): self.mapCanvas.saveAsImage(fullpath) def action_zoomin_triggered(self): self.maptool = QgsMapToolZoom(self.mapCanvas, False) self.mapCanvas.setMapTool(self.maptool) def action_zoomout_triggered(self): self.maptool = QgsMapToolZoom(self.mapCanvas, True) self.mapCanvas.setMapTool(self.maptool) def action_pan_triggered(self): self.maptool = QgsMapToolPan(self.mapCanvas) self.mapCanvas.setMapTool(self.maptool) def action_fullextent_triggered(self): self.mapCanvas.setExtent(self.layer.extent()) self.mapCanvas.refresh() def action_select_triggered(self): self.maptool = PolygonMapTool(self) self.mapCanvas.setMapTool(self.maptool, True) self.mapCanvas.refresh() def mapDecoration_show(self): self.mapdecoration_dia = layerOut(QgsProject.instance(), self.qssStyleDia) self.mapdecoration_dia.show() # 显示鼠标点的经纬度信息 def show_lonlat(self, point): x = point.x() y = point.y() self.statusbar.showMessage(f'经度:{x},纬度:{y}') def style_stand(self): styleFile = './QSS-master/style.qss' self.qssStyle = CommonHelper.readQSS(styleFile) self.qssStyleDia = CommonHelper.readQSS('./QSS-master/ElegantDark.qss') QMainWindow.setStyleSheet(self, self.qssStyle) def style_Aqua(self): styleFile = './QSS-master/Aqua.qss' self.qssStyle = CommonHelper.readQSS(styleFile) self.qssStyleDia = CommonHelper.readQSS(styleFile) QMainWindow.setStyleSheet(self, self.qssStyle) def style_ConsoleStyle(self): styleFile = './QSS-master/ConsoleStyle.qss' self.qssStyle = CommonHelper.readQSS(styleFile) self.qssStyleDia = CommonHelper.readQSS(styleFile) QMainWindow.setStyleSheet(self, self.qssStyle) def style_ElegantDark(self): styleFile = './QSS-master/ElegantDark.qss' self.qssStyle = CommonHelper.readQSS(styleFile) self.qssStyleDia = CommonHelper.readQSS(styleFile) QMainWindow.setStyleSheet(self, self.qssStyle) def style_ManjaroMix(self): styleFile = './QSS-master/ManjaroMix.qss' self.qssStyle = CommonHelper.readQSS(styleFile) self.qssStyleDia = CommonHelper.readQSS(styleFile) QMainWindow.setStyleSheet(self, self.qssStyle) def style_MaterialDark(self): styleFile = './QSS-master/MaterialDark.qss' self.qssStyle = CommonHelper.readQSS(styleFile) self.qssStyleDia = CommonHelper.readQSS(styleFile) QMainWindow.setStyleSheet(self, self.qssStyle) def style_Ubuntu(self): styleFile = './QSS-master/Ubuntu.qss' self.qssStyle = CommonHelper.readQSS(styleFile) self.qssStyleDia = CommonHelper.readQSS(styleFile) QMainWindow.setStyleSheet(self, self.qssStyle) def action_band_synthesis_triggered(self): self.band_synthesis_window.show() def action_KMeans_triggered(self): self.kmeans_window.show() def action_DBScan_triggered(self): self.dbscan_window.show() def action_Meanshift_triggered(self): self.meanshift_window.show() def action_add_kmeans_result(self, kmeans_img_path, layer_legends): self.loadMap(kmeans_img_path, layer_legends) def action_add_dbscan_result(self, dbscan_img_path, layer_legends): self.loadMap(dbscan_img_path, layer_legends) def action_add_meanshift_result(self, meanshift_img_path, layer_legends): self.loadMap(meanshift_img_path, layer_legends) def action_add_band_synthesis_result(self, multiband_img_path): self.loadMap(multiband_img_path)