class W3WCoordInputDialog(QDockWidget):
def __init__(self, canvas, parent):
self.canvas = canvas
self.marker = None
QDockWidget.__init__(self, parent)
self.setAllowedAreas(Qt.TopDockWidgetArea)
self.initGui()
def setApiKey(self, apikey):
self.w3w = what3words(apikey=apikey)
def initGui(self):
self.setWindowTitle("Zoom to 3 word address")
self.label = QLabel('3 Word Address')
self.coordBox = QLineEdit()
self.coordBox.returnPressed.connect(self.zoomToPressed)
self.zoomToButton = QPushButton("Zoom to")
self.zoomToButton.clicked.connect(self.zoomToPressed)
self.removeMarkerButton = QPushButton("Remove marker")
self.removeMarkerButton.clicked.connect(self.removeMarker)
self.removeMarkerButton.setDisabled(True)
self.hlayout = QHBoxLayout()
self.hlayout.setSpacing(6)
self.hlayout.setMargin(9)
self.hlayout.addWidget(self.label)
self.hlayout.addWidget(self.coordBox)
self.hlayout.addWidget(self.zoomToButton)
self.hlayout.addWidget(self.removeMarkerButton)
self.dockWidgetContents = QWidget()
self.dockWidgetContents.setLayout(self.hlayout)
self.setWidget(self.dockWidgetContents)
def zoomToPressed(self):
try:
w3wCoord = str(self.coordBox.text()).replace(" ", "")
QApplication.setOverrideCursor(QCursor(Qt.WaitCursor))
json = self.w3w.forwardGeocode(w3wCoord)
lat = float(json["geometry"]["lat"])
lon = float(json["geometry"]["lng"])
canvasCrs = self.canvas.mapSettings().destinationCrs()
epsg4326 = QgsCoordinateReferenceSystem("EPSG:4326")
transform4326 = QgsCoordinateTransform(epsg4326, canvasCrs)
center = transform4326.transform(lon, lat)
self.canvas.zoomByFactor(1, center)
self.canvas.refresh()
if self.marker is None:
self.marker = QgsVertexMarker(self.canvas)
self.marker.setCenter(center)
self.marker.setIconSize(8)
self.marker.setPenWidth(4)
self.removeMarkerButton.setDisabled(False)
self.coordBox.setStyleSheet("QLineEdit{background: white}")
except Exception as e:
self.coordBox.setStyleSheet("QLineEdit{background: yellow}")
finally:
QApplication.restoreOverrideCursor()
def removeMarker(self):
self.canvas.scene().removeItem(self.marker)
self.marker = None
def closeEvent(self, evt):
if self.marker is not None:
self.canvas.scene().removeItem(self.marker)
self.marker = None
class W3WCoordInputDialog(QDockWidget):
def __init__(self, canvas, parent):
self.canvas = canvas
self.marker = None
QDockWidget.__init__(self, parent)
self.setAllowedAreas(Qt.TopDockWidgetArea)
self.initGui()
def setApiKey(self, apikey):
self.w3w = what3words(apikey=apikey)
def initGui(self):
self.setWindowTitle("Zoom to 3 word address")
self.label = QLabel('3 Word Address')
self.coordBox = QLineEdit()
'''
When the button is pressed, we try to zoom to the coordinate entered
by the user. That is done in the zoomToPressed method, but since this
is a method that might take a while to be executed (it connects
the w3w API), we use the 'execute' function in the qgiscommons
library, which will take care of changing the mouse pointer to an
hourglass until the method execution is finished.
'''
self.coordBox.returnPressed.connect(
lambda: execute(self.zoomToPressed))
self.zoomToButton = QPushButton("Zoom to")
self.zoomToButton.clicked.connect(self.zoomToPressed)
self.removeMarkerButton = QPushButton("Remove marker")
self.removeMarkerButton.clicked.connect(self.removeMarker)
self.removeMarkerButton.setDisabled(True)
self.hlayout = QHBoxLayout()
self.hlayout.setSpacing(6)
self.hlayout.setMargin(9)
self.hlayout.addWidget(self.label)
self.hlayout.addWidget(self.coordBox)
self.hlayout.addWidget(self.zoomToButton)
self.hlayout.addWidget(self.removeMarkerButton)
self.dockWidgetContents = QWidget()
self.dockWidgetContents.setLayout(self.hlayout)
self.setWidget(self.dockWidgetContents)
def zoomToPressed(self):
try:
'''We convert the w3w address into a EPSG:4326 coord'''
w3wCoord = str(self.coordBox.text()).replace(" ", "")
json = self.w3w.forwardGeocode(w3wCoord)
lat = float(json["geometry"]["lat"])
lon = float(json["geometry"]["lng"])
'''
We convert the 4326 coord into a coord in the CRS of the canvas
'''
canvasCrs = self.canvas.mapSettings().destinationCrs()
epsg4326 = QgsCoordinateReferenceSystem("EPSG:4326")
transform4326 = QgsCoordinateTransform(epsg4326, canvasCrs)
center = transform4326.transform(lon, lat)
'''We zoom to that coord and set a marker'''
self.canvas.zoomByFactor(1, center)
self.canvas.refresh()
if self.marker is None:
self.marker = QgsVertexMarker(self.canvas)
self.marker.setCenter(center)
self.marker.setIconSize(8)
self.marker.setPenWidth(4)
'''Allow user to remove marker'''
self.removeMarkerButton.setDisabled(False)
self.coordBox.setStyleSheet("QLineEdit{background: white}")
except Exception as e:
self.coordBox.setStyleSheet("QLineEdit{background: yellow}")
def removeMarker(self):
self.canvas.scene().removeItem(self.marker)
self.marker = None
def closeEvent(self, evt):
'''Remove marker when closing widget'''
if self.marker is not None:
self.removeMarker()
