def canvasReleaseEvent(self, event):
x = event.pos().x()
y = event.pos().y()
# TODO layer automatisch speichern damit das polygon eine id von der db kriegt
# Ugly hack to identify the clicked element. For some reasons if InfoPointTool inherits from QgsMapToolIdentify,
# canvasRealeaseEvent isn't called.
tool = QgsMapToolIdentify(self.canvas)
results = tool.identify(x,y, tool.ActiveLayer, tool.AllLayers)
if not results:
return
guiName = self.canvas.currentLayer().name()
dbName = self.canvas.currentLayer().dataProvider().dataSourceUri().split(' ')[0].split('=')[1].replace("'", '')
result = results[0]
feat = result.mFeature
attrs = feat.attributes()
fields = feat.fields().toList()
fieldId = None
for i, attr in enumerate(attrs):
name = fields[i].name()
if name == 'id' and attr is not None:
fieldId = str(attr)
break
if fieldId is None:
QMessageBox.warning(None, "Ungespeicherte Aenderungen", "Sie muessen das Polygon zuerst speichern")
return
DynamicGuiLoader(dbName, guiName, fieldId)
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
class ClickTool(QgsMapToolIdentify):
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)
# 滑鼠按下時動作
def canvasPressEvent(self, event):
global point, features
layer = self.dlg.mMapLayerComboBox.currentLayer()
# point類型為QgsPointXY
point = self.toMapCoordinates(self.canvas.mouseLastXY())
# QgsPointXY轉list
point = list(point)
#print("\n---\n")
#print("click (x,y): ", point)
# 挑最上層layer選
features = self.tool.identify(event.x(), event.y(), [layer],
self.tool.TopDownStopAtFirst)
#print(event.x(), event.y())
if len(features) > 0:
# here you get the selected feature
feature = features[0].mFeature
#print(list(feature.geometry().asMultiPolyline()))
self.dlg.label_coor.setText("[{:<10.1f}, {:>10.1f}]".format(point[0], point[1]))
#print("select ID: ", self.select_id)
#print("click x,y: ", point[0], point[1])
QMessageBox.information(self.dlg, "提示","您點擊了座標：[{:.1f} , {:.1f}]\n該圖徵ID：{:d}"
.format(point[0], point[1], feature.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
class PointTool(QgsMapTool):
trigger = pyqtSignal(QgsFeature)
def __init__(self, canvas):
QgsMapTool.__init__(self, canvas)
self.canvas = canvas
self.identifier = QgsMapToolIdentify(canvas)
def canvasPressEvent(self, e):
x = e.pos().x()
y = e.pos().y()
point = self.canvas.getCoordinateTransform().toMapCoordinates(x, y)
indentifiedFeatures = self.identifier.identify(
e.x(), e.y(), self.identifier.TopDownAll)
if len(indentifiedFeatures) > 0:
self.trigger.emit(indentifiedFeatures[0].mFeature)
