def canvasReleaseEvent(self, mouseEvent):
theLayer = self.mCanvas.currentLayer()
if theLayer is None:
return
if theLayer.type() != QgsMapLayer.VectorLayer:
return
if theLayer.featureCount() == 0:
return
qgsMapToolIndentify = QgsMapToolIdentify(self.mCanvas)
resultList = qgsMapToolIndentify.identify(mouseEvent.x(),
mouseEvent.y(), -1)
if resultList == []: # no feature selected, pan the canvas
if self.mDragging == True:
self.mCanvas.panActionEnd(mouseEvent.pos())
self.mDragging = False
else: # add pan to mouse cursor
# transform the mouse pos to map coordinates
center = self.mCanvas.getCoordinateTransform().toMapPoint(
mouseEvent.x(), mouseEvent.y())
self.mCanvas.setCenter(center)
self.mCanvas.refresh()
else: # select the features
theFeature = (resultList[0]).mFeature
if RdbLinkObject.isMyFeature(theFeature) == True:
nodeId = theFeature.attribute('start_node_id')
self.mNaviDlg.addNode(nodeId)
return
def canvasPressEvent(self, e):
'''
override, remember feature on click and move marker (create one if not
drawn yet)
'''
if self._picked_feature is None:
features = QgsMapToolIdentify(self.canvas).identify(
e.pos().x(),
e.pos().y(), self._layers,
QgsMapToolIdentify.TopDownStopAtFirst)
if len(features) == 0:
return
feature = features[0].mFeature
self._picked_feature = feature.id()
# there is a feature -> drag it
self._dragging = True
self.canvas.setCursor(self.drag_cursor)
# not marked yet -> mark position
if not self._marker:
color = QColor(0, 0, 255)
color.setAlpha(100)
self._marker = QgsVertexMarker(self.canvas)
self._marker.setColor(color)
self._marker.setIconSize(10)
self._marker.setIconType(QgsVertexMarker.ICON_CIRCLE)
self._marker.setPenWidth(10)
point = self.toMapCoordinates(e.pos())
self._marker.setCenter(point)
def __init__(self, canvas, dlg):
global features
QgsMapToolIdentify.__init__(self, canvas)
self.canvas = canvas
self.dlg = dlg
self.select_id = None
self.tool = QgsMapToolIdentify(self.canvas)
def canvasPressEvent(self, event):
""" Sobrescrevendo método da QgsMapTool herdada para que execute
as funcionalidades desejadas.
Usamos a QgsMapToolIdentify para identificar feições de
camadas no mapa. Para mais Informações consulte a documentação
"""
if not self.municipios_layer.isValid():
return
# pega a camada de municipios
layer = self.municipios_layer
# Aqui estamos definindo como a identificação deve ser feita
inicio_identificacao = QgsMapToolIdentify.TopDownStopAtFirst
# usando a ferramenta para ver se o local onde clicamos (x,y do evento de clique)
# pertence a uma feição da camada
feicoes_clicadas = QgsMapToolIdentify(self.canvas).identify(
event.x(),
event.y(),
[layer],
inicio_identificacao
)
# se existir, seleciona só a primeira feição retornada na identificação
if len(feicoes_clicadas) > 0:
municipio_selecionado = feicoes_clicadas[0].mFeature
self.municipios_layer.select(municipio_selecionado.id())
def canvasReleaseEvent(self, mouseEvent):
theLayer = self.mCanvas.currentLayer()
if theLayer is None:
return
if theLayer.type() != QgsMapLayer.VectorLayer:
return
if theLayer.featureCount() == 0:
return
qgsMapTollIndentify = QgsMapToolIdentify(self.mCanvas)
resultList = qgsMapTollIndentify.identify(mouseEvent.x(), mouseEvent.y(), -1)
if resultList == []: # no feature selected, pan the canvas
if self.mDragging == True:
self.mCanvas.panActionEnd(mouseEvent.pos())
self.mDragging = False
else: # add pan to mouse cursor
# transform the mouse pos to map coordinates
center = self.mCanvas.getCoordinateTransform().toMapPoint(mouseEvent.x(), mouseEvent.y())
self.mCanvas.setCenter(center)
self.mCanvas.refresh()
else: # select the features
self.removeAllSelection()
featureIdList = []
for oneResult in resultList:
featureIdList.append(oneResult.mFeature.id())
theLayer.select(featureIdList)
dlg = self.getAppreciateDlg(theLayer, featureIdList)
dlg.show()
result = dlg.exec_()
if result:
pass
else:
pass
return
def run(self):
"""Run method that performs all the real work"""
# Create the dialog with elements (after translation) and keep reference
# Only create GUI ONCE in callback, so that it will only load when the plugin is started
if self.first_start == True:
self.first_start = False
self.finish = False
self.dlg = TestPluginDialog()
self.maptool = QgsMapToolIdentify(self.canvas)
self.clicktool = ClickTool(self.canvas, self.dlg)
self.mousetool = MouseTool(self.canvas, self.dlg)
# 圖層分類 (MultiLineString, MultiPolygon)
layer_group = [[],[]]
# 不要用self.canvas.layers() 沒打勾的layer無法獲取
layers = list(QgsProject().instance().mapLayers().values()) # dict轉list
for l in layers: # QgsVectorLayer
if l.wkbType() == QgsWkbTypes.MultiLineString and l.type() == QgsMapLayer.VectorLayer:
layer_group[0].append(l)
if l.wkbType() == QgsWkbTypes.MultiPolygon and l.type() == QgsMapLayer.VectorLayer:
layer_group[1].append(l)
# 控制UI連動function
self.dlg.btn_start.clicked.connect(self.start_calc)
self.dlg.btn_clicktool.clicked.connect(self.show_clicktool)
self.dlg.btn_mousetool.clicked.connect(self.show_mousetool)
self.dlg.btn_clear.clicked.connect(self.reset)
self.dlg.btn_save.clicked.connect(self.save_to_shp)
self.dlg.mMapLayerComboBox.layerChanged.connect(self.set_layer)
self.dlg.mMapLayerComboBox_2.layerChanged.connect(self.set_layer_2)
self.mousetool.featureIdentified.connect(self.identify_select)
# 圖層下拉框 設定過濾規則
# 河道
self.dlg.mMapLayerComboBox.setFilters(QgsMapLayerProxyModel.VectorLayer)
self.dlg.mMapLayerComboBox.setExceptedLayerList(layer_group[1]) # 只要河道不要集水區
# 集水區
self.dlg.mMapLayerComboBox_2.setFilters(QgsMapLayerProxyModel.VectorLayer)
self.dlg.mMapLayerComboBox_2.setExceptedLayerList(layer_group[0]) # 只要集水區不要河道
self.update_ = Update(self.dlg)
self.layer = self.dlg.mMapLayerComboBox.currentLayer()
self.layer_2 = self.dlg.mMapLayerComboBox_2.currentLayer()
# 進度條
self.dlg.progressBar.setMinimum(0)
self.dlg.progressBar.setFormat("已計算: %d %%" % (self.dlg.progressBar.value()))
# show the dialog
self.dlg.show()
# Run the dialog event loop
result = self.dlg.exec_()
# See if OK was pressed
if result:
self.reset()
self.unset_maptool()
self.dlg.label_coor.setText("請使用選取工具點擊圖上任一圖徵...")
def canvasReleaseEvent(self, mouseEvent):
'''
override, emit first feature found on mouse release
'''
if not self._layers:
return
features = QgsMapToolIdentify(self.canvas).identify(
mouseEvent.x(), mouseEvent.y(), self._layers,
QgsMapToolIdentify.TopDownStopAtFirst)
if len(features) > 0:
self.feature_picked.emit(features[0].mFeature.id())
def action_identify_triggered(self):
self.maptool = QgsMapToolIdentify(self.mapCanvas)
self.mapCanvas.setMapTool(self.maptool)
def __init__(self, canvas):
QgsMapTool.__init__(self, canvas)
self.canvas = canvas
self.identifier = QgsMapToolIdentify(canvas)
